Also reject null byte

.gitattributes

@@ -1 +0,0 @@
-*.go text eol=lf

.github/workflows/ci.yml

@@ -19,16 +19,16 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
-        go: [ '1.18', '1.19' ]
+        go: [ '1.17', '1.18' ]
 
         include:
         # Set the minimum Go patch version for the given Go minor
         # Usable via ${{ matrix.GO_SEMVER }}
-        - go: '1.18'
-          GO_SEMVER: '~1.18.4'
+        - go: '1.17'
+          GO_SEMVER: '~1.17.9'
 
-        - go: '1.19'
-          GO_SEMVER: '~1.19.0'
+        - go: '1.18'
+          GO_SEMVER: '~1.18.1'
 
         # Set some variables per OS, usable via ${{ matrix.VAR }}
         # CADDY_BIN_PATH: the path to the compiled Caddy binary, for artifact publishing

.github/workflows/cross-build.yml

@@ -16,13 +16,13 @@ jobs:
       fail-fast: false
       matrix:
         goos: ['android', 'linux', 'solaris', 'illumos', 'dragonfly', 'freebsd', 'openbsd', 'plan9', 'windows', 'darwin', 'netbsd']
-        go: [ '1.19' ]
+        go: [ '1.18' ]
 
         include:
         # Set the minimum Go patch version for the given Go minor
         # Usable via ${{ matrix.GO_SEMVER }}
-        - go: '1.19'
-          GO_SEMVER: '~1.19.0'
+        - go: '1.18'
+          GO_SEMVER: '~1.18.1'
 
     runs-on: ubuntu-latest
     continue-on-error: true

.github/workflows/lint.yml

@@ -14,22 +14,17 @@ jobs:
   # From https://github.com/golangci/golangci-lint-action
   golangci:
     name: lint
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '~1.18.4'
+          go-version: '~1.17.9'
           check-latest: true
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.47
-          # Windows times out frequently after about 5m50s if we don't set a longer timeout.
-          args: --timeout 10m
+          version: v1.44
           # Optional: show only new issues if it's a pull request. The default value is `false`.
           # only-new-issues: true

.github/workflows/release.yml

@@ -11,22 +11,15 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        go: [ '1.19' ]
+        go: [ '1.18' ]
 
         include:
         # Set the minimum Go patch version for the given Go minor
         # Usable via ${{ matrix.GO_SEMVER }}
-        - go: '1.19'
-          GO_SEMVER: '~1.19.0'
+        - go: '1.18'
+          GO_SEMVER: '~1.18.1'
 
     runs-on: ${{ matrix.os }}
-    # https://github.com/sigstore/cosign/issues/1258#issuecomment-1002251233
-    # https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/about-security-hardening-with-openid-connect#adding-permissions-settings
-    permissions:
-      id-token: write
-      # https://docs.github.com/en/rest/overview/permissions-required-for-github-apps#permission-on-contents
-      # "Releases" is part of `contents`, so it needs the `write`
-      contents: write
 
     steps:
     - name: Install Go
@@ -106,14 +99,7 @@ jobs:
         key: ${{ runner.os }}-go${{ matrix.go }}-release-${{ hashFiles('**/go.sum') }}
         restore-keys: |
           ${{ runner.os }}-go${{ matrix.go }}-release
-    - name: Install Cosign
-      uses: sigstore/cosign-installer@main
-    - name: Cosign version
-      run: cosign version
-    - name: Install Syft
-      uses: anchore/sbom-action/download-syft@main
-    - name: Syft version
-      run: syft version
+
     # GoReleaser will take care of publishing those artifacts into the release
     - name: Run GoReleaser
       uses: goreleaser/goreleaser-action@v2
@@ -123,7 +109,6 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         TAG: ${{ steps.vars.outputs.version_tag }}
-        COSIGN_EXPERIMENTAL: 1
 
     # Only publish on non-special tags (e.g. non-beta)
     # We will continue to push to Gemfury for the foreseeable future, although

.goreleaser.yml

@@ -14,11 +14,7 @@ before:
     # run `go mod tidy`. The `/bin/sh -c '...'` is because goreleaser can't find cd in PATH without shell invocation.
     - /bin/sh -c 'cd ./caddy-build && go mod tidy'
     - git clone --depth 1 https://github.com/caddyserver/dist caddy-dist
-    - mkdir -p caddy-dist/man
     - go mod download
-    - go run cmd/caddy/main.go manpage --directory ./caddy-dist/man
-    - gzip -r ./caddy-dist/man/
-    - /bin/sh -c 'go run cmd/caddy/main.go completion bash > ./caddy-dist/scripts/bash-completion'
 
 builds:
 - env:
@@ -62,22 +58,9 @@ builds:
       goarm: "5"
   flags:
   - -trimpath
-  - -mod=readonly
   ldflags:
   - -s -w
-signs:
-  - cmd: cosign
-    signature: "${artifact}.sig"
-    certificate: '{{ trimsuffix .Env.artifact ".tar.gz" }}.pem'
-    args: ["sign-blob", "--output-signature=${signature}", "--output-certificate", "${certificate}", "${artifact}"]
-    artifacts: all
-sboms:
-  - artifacts: binary
-    # defaults to
-    # documents:
-    # - "{{ .Binary }}_{{ .Version }}_{{ .Os }}_{{ .Arch }}.sbom"
-    cmd: syft
-    args: ["$artifact", "--file", "${document}", "--output", "cyclonedx-json"]
+
 archives:
   - format_overrides:
       - goos: windows
@@ -113,16 +96,13 @@ nfpms:
       - src: ./caddy-dist/welcome/index.html
         dst: /usr/share/caddy/index.html
       
-      - src: ./caddy-dist/scripts/bash-completion
+      - src: ./caddy-dist/scripts/completions/bash-completion
         dst: /etc/bash_completion.d/caddy
     
       - src: ./caddy-dist/config/Caddyfile
         dst: /etc/caddy/Caddyfile
         type: config
 
-      - src: ./caddy-dist/man/*
-        dst: /usr/share/man/man8/
-
     scripts:
       postinstall: ./caddy-dist/scripts/postinstall.sh
       preremove: ./caddy-dist/scripts/preremove.sh

README.md

@@ -57,25 +57,25 @@
 	- Multi-issuer fallback
 - **Stays up when other servers go down** due to TLS/OCSP/certificate-related issues
 - **Production-ready** after serving trillions of requests and managing millions of TLS certificates
-- **Scales to hundreds of thousands of sites** as proven in production
-- **HTTP/1.1, HTTP/2, and HTTP/3** supported all by default
+- **Scales to tens of thousands of sites** ... and probably more
+- **HTTP/1.1, HTTP/2, and experimental HTTP/3** support
 - **Highly extensible** [modular architecture](https://caddyserver.com/docs/architecture) lets Caddy do anything without bloat
 - **Runs anywhere** with **no external dependencies** (not even libc)
 - Written in Go, a language with higher **memory safety guarantees** than other servers
 - Actually **fun to use**
-- So much more to [discover](https://caddyserver.com/v2)
+- So, so much more to [discover](https://caddyserver.com/v2)
 
 ## Install
 
-The simplest, cross-platform way to get started is to download Caddy from [GitHub Releases](https://github.com/caddyserver/caddy/releases) and place the executable file in your PATH.
+The simplest, cross-platform way is to download from [GitHub Releases](https://github.com/caddyserver/caddy/releases) and place the executable file in your PATH.
 
-See [our online documentation](https://caddyserver.com/docs/install) for other install instructions.
+For other install options, see https://caddyserver.com/docs/install.
 
 ## Build from source
 
 Requirements:
 
-- [Go 1.18 or newer](https://golang.org/dl/)
+- [Go 1.17 or newer](https://golang.org/dl/)
 
 ### For development
  
@@ -164,9 +164,9 @@ The docs are also open source. You can contribute to them here: https://github.c
 
 ## Getting help
 
-- We advise companies using Caddy to secure a support contract through [Ardan Labs](https://www.ardanlabs.com/my/contact-us?dd=caddy) before help is needed.
+- We **strongly recommend** that all professionals or companies using Caddy get a support contract through [Ardan Labs](https://www.ardanlabs.com/my/contact-us?dd=caddy) before help is needed.
 
-- A [sponsorship](https://github.com/sponsors/mholt) goes a long way! We can offer private help to sponsors. If Caddy is benefitting your company, please consider a sponsorship. This not only helps fund full-time work to ensure the longevity of the project, it provides your company the resources, support, and discounts you need; along with being a great look for your company to your customers and potential customers!
+- A [sponsorship](https://github.com/sponsors/mholt) goes a long way! If Caddy is benefitting your company, please consider a sponsorship! This not only helps fund full-time work to ensure the longevity of the project, it's also a great look for your company to your customers and potential customers!
 
 - Individuals can exchange help for free on our community forum at https://caddy.community. Remember that people give help out of their spare time and good will. The best way to get help is to give it first!
 

admin.go

@@ -25,8 +25,6 @@ import (
 	"errors"
 	"expvar"
 	"fmt"
-	"hash"
-	"hash/fnv"
 	"io"
 	"net"
 	"net/http"
@@ -40,6 +38,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/caddyserver/caddy/v2/notify"
 	"github.com/caddyserver/certmagic"
 	"github.com/prometheus/client_golang/prometheus"
 	"go.uber.org/zap"
@@ -339,19 +338,17 @@ func (admin AdminConfig) allowedOrigins(addr NetworkAddress) []*url.URL {
 // that there is always an admin server (unless it is explicitly
 // configured to be disabled).
 func replaceLocalAdminServer(cfg *Config) error {
-	// always* be sure to close down the old admin endpoint
+	// always be sure to close down the old admin endpoint
 	// as gracefully as possible, even if the new one is
 	// disabled -- careful to use reference to the current
 	// (old) admin endpoint since it will be different
 	// when the function returns
-	// (* except if the new one fails to start)
 	oldAdminServer := localAdminServer
-	var err error
 	defer func() {
 		// do the shutdown asynchronously so that any
 		// current API request gets a response; this
 		// goroutine may last a few seconds
-		if oldAdminServer != nil && err == nil {
+		if oldAdminServer != nil {
 			go func(oldAdminServer *http.Server) {
 				err := stopAdminServer(oldAdminServer)
 				if err != nil {
@@ -442,7 +439,7 @@ func manageIdentity(ctx Context, cfg *Config) error {
 		if err != nil {
 			return fmt.Errorf("loading identity issuer modules: %s", err)
 		}
-		for _, issVal := range val.([]any) {
+		for _, issVal := range val.([]interface{}) {
 			cfg.Admin.Identity.issuers = append(cfg.Admin.Identity.issuers, issVal.(certmagic.Issuer))
 		}
 	}
@@ -897,36 +894,16 @@ func (h adminHandler) originAllowed(origin *url.URL) bool {
 	return false
 }
 
-// etagHasher returns a the hasher we used on the config to both
-// produce and verify ETags.
-func etagHasher() hash.Hash32 { return fnv.New32a() }
-
-// makeEtag returns an Etag header value (including quotes) for
-// the given config path and hash of contents at that path.
-func makeEtag(path string, hash hash.Hash) string {
-	return fmt.Sprintf(`"%s %x"`, path, hash.Sum(nil))
-}
-
 func handleConfig(w http.ResponseWriter, r *http.Request) error {
 	switch r.Method {
 	case http.MethodGet:
 		w.Header().Set("Content-Type", "application/json")
-		// Set the ETag as a trailer header.
-		// The alternative is to write the config to a buffer, and
-		// then hash that.
-		w.Header().Set("Trailer", "ETag")
 
-		hash := etagHasher()
-		configWriter := io.MultiWriter(w, hash)
-		err := readConfig(r.URL.Path, configWriter)
+		err := readConfig(r.URL.Path, w)
 		if err != nil {
 			return APIError{HTTPStatus: http.StatusBadRequest, Err: err}
 		}
 
-		// we could consider setting up a sync.Pool for the summed
-		// hashes to reduce GC pressure.
-		w.Header().Set("Etag", makeEtag(r.URL.Path, hash))
-
 		return nil
 
 	case http.MethodPost,
@@ -960,7 +937,7 @@ func handleConfig(w http.ResponseWriter, r *http.Request) error {
 
 		forceReload := r.Header.Get("Cache-Control") == "must-revalidate"
 
-		err := changeConfig(r.Method, r.URL.Path, body, r.Header.Get("If-Match"), forceReload)
+		err := changeConfig(r.Method, r.URL.Path, body, forceReload)
 		if err != nil && !errors.Is(err, errSameConfig) {
 			return err
 		}
@@ -994,9 +971,9 @@ func handleConfigID(w http.ResponseWriter, r *http.Request) error {
 	id := parts[2]
 
 	// map the ID to the expanded path
-	currentCtxMu.RLock()
+	currentCfgMu.RLock()
 	expanded, ok := rawCfgIndex[id]
-	defer currentCtxMu.RUnlock()
+	defer currentCfgMu.RUnlock()
 	if !ok {
 		return APIError{
 			HTTPStatus: http.StatusNotFound,
@@ -1019,6 +996,10 @@ func handleStop(w http.ResponseWriter, r *http.Request) error {
 		}
 	}
 
+	if err := notify.NotifyStopping(); err != nil {
+		Log().Error("unable to notify stopping to service manager", zap.Error(err))
+	}
+
 	exitProcess(context.Background(), Log().Named("admin.api"))
 	return nil
 }
@@ -1027,11 +1008,11 @@ func handleStop(w http.ResponseWriter, r *http.Request) error {
 // the operation at path according to method, using body and out as
 // needed. This is a low-level, unsynchronized function; most callers
 // will want to use changeConfig or readConfig instead. This requires a
-// read or write lock on currentCtxMu, depending on method (GET needs
+// read or write lock on currentCfgMu, depending on method (GET needs
 // only a read lock; all others need a write lock).
 func unsyncedConfigAccess(method, path string, body []byte, out io.Writer) error {
 	var err error
-	var val any
+	var val interface{}
 
 	// if there is a request body, decode it into the
 	// variable that will be set in the config according
@@ -1068,16 +1049,16 @@ func unsyncedConfigAccess(method, path string, body []byte, out io.Writer) error
 		parts = parts[:len(parts)-1]
 	}
 
-	var ptr any = rawCfg
+	var ptr interface{} = rawCfg
 
 traverseLoop:
 	for i, part := range parts {
 		switch v := ptr.(type) {
-		case map[string]any:
+		case map[string]interface{}:
 			// if the next part enters a slice, and the slice is our destination,
 			// handle it specially (because appending to the slice copies the slice
 			// header, which does not replace the original one like we want)
-			if arr, ok := v[part].([]any); ok && i == len(parts)-2 {
+			if arr, ok := v[part].([]interface{}); ok && i == len(parts)-2 {
 				var idx int
 				if method != http.MethodPost {
 					idxStr := parts[len(parts)-1]
@@ -1099,7 +1080,7 @@ traverseLoop:
 					}
 				case http.MethodPost:
 					if ellipses {
-						valArray, ok := val.([]any)
+						valArray, ok := val.([]interface{})
 						if !ok {
 							return fmt.Errorf("final element is not an array")
 						}
@@ -1134,9 +1115,9 @@ traverseLoop:
 				case http.MethodPost:
 					// if the part is an existing list, POST appends to
 					// it, otherwise it just sets or creates the value
-					if arr, ok := v[part].([]any); ok {
+					if arr, ok := v[part].([]interface{}); ok {
 						if ellipses {
-							valArray, ok := val.([]any)
+							valArray, ok := val.([]interface{})
 							if !ok {
 								return fmt.Errorf("final element is not an array")
 							}
@@ -1167,12 +1148,12 @@ traverseLoop:
 				// might not exist yet; that's OK but we need to make them as
 				// we go, while we still have a pointer from the level above
 				if v[part] == nil && method == http.MethodPut {
-					v[part] = make(map[string]any)
+					v[part] = make(map[string]interface{})
 				}
 				ptr = v[part]
 			}
 
-		case []any:
+		case []interface{}:
 			partInt, err := strconv.Atoi(part)
 			if err != nil {
 				return fmt.Errorf("[/%s] invalid array index '%s': %v",
@@ -1194,7 +1175,7 @@ traverseLoop:
 
 // RemoveMetaFields removes meta fields like "@id" from a JSON message
 // by using a simple regular expression. (An alternate way to do this
-// would be to delete them from the raw, map[string]any
+// would be to delete them from the raw, map[string]interface{}
 // representation as they are indexed, then iterate the index we made
 // and add them back after encoding as JSON, but this is simpler.)
 func RemoveMetaFields(rawJSON []byte) []byte {
@@ -1326,7 +1307,7 @@ const (
 )
 
 var bufPool = sync.Pool{
-	New: func() any {
+	New: func() interface{} {
 		return new(bytes.Buffer)
 	},
 }

admin_test.go

@@ -16,8 +16,6 @@ package caddy
 
 import (
 	"encoding/json"
-	"fmt"
-	"net/http"
 	"reflect"
 	"sync"
 	"testing"
@@ -115,7 +113,7 @@ func TestUnsyncedConfigAccess(t *testing.T) {
 		}
 
 		// decode the expected config so we can do a convenient DeepEqual
-		var expectedDecoded any
+		var expectedDecoded interface{}
 		err = json.Unmarshal([]byte(tc.expect), &expectedDecoded)
 		if err != nil {
 			t.Fatalf("Test %d: Unmarshaling expected config: %v", i, err)
@@ -141,57 +139,10 @@ func TestLoadConcurrent(t *testing.T) {
 			wg.Done()
 		}()
 	}
+
 	wg.Wait()
 }
 
-type fooModule struct {
-	IntField int
-	StrField string
-}
-
-func (fooModule) CaddyModule() ModuleInfo {
-	return ModuleInfo{
-		ID:  "foo",
-		New: func() Module { return new(fooModule) },
-	}
-}
-func (fooModule) Start() error { return nil }
-func (fooModule) Stop() error  { return nil }
-
-func TestETags(t *testing.T) {
-	RegisterModule(fooModule{})
-
-	if err := Load([]byte(`{"apps": {"foo": {"strField": "abc", "intField": 0}}}`), true); err != nil {
-		t.Fatalf("loading: %s", err)
-	}
-
-	const key = "/" + rawConfigKey + "/apps/foo"
-
-	// try update the config with the wrong etag
-	err := changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 1}}`), fmt.Sprintf(`"/%s not_an_etag"`, rawConfigKey), false)
-	if apiErr, ok := err.(APIError); !ok || apiErr.HTTPStatus != http.StatusPreconditionFailed {
-		t.Fatalf("expected precondition failed; got %v", err)
-	}
-
-	// get the etag
-	hash := etagHasher()
-	if err := readConfig(key, hash); err != nil {
-		t.Fatalf("reading: %s", err)
-	}
-
-	// do the same update with the correct key
-	err = changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 1}`), makeEtag(key, hash), false)
-	if err != nil {
-		t.Fatalf("expected update to work; got %v", err)
-	}
-
-	// now try another update. The hash should no longer match and we should get precondition failed
-	err = changeConfig(http.MethodPost, key, []byte(`{"strField": "abc", "intField": 2}`), makeEtag(key, hash), false)
-	if apiErr, ok := err.(APIError); !ok || apiErr.HTTPStatus != http.StatusPreconditionFailed {
-		t.Fatalf("expected precondition failed; got %v", err)
-	}
-}
-
 func BenchmarkLoad(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		Load(testCfg, true)

caddy.go

@@ -17,7 +17,6 @@ package caddy
 import (
 	"bytes"
 	"context"
-	"encoding/hex"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -102,32 +101,20 @@ func Run(cfg *Config) error {
 // if it is different from the current config or
 // forceReload is true.
 func Load(cfgJSON []byte, forceReload bool) error {
-	if err := notify.Reloading(); err != nil {
-		Log().Error("unable to notify service manager of reloading state", zap.Error(err))
+	if err := notify.NotifyReloading(); err != nil {
+		Log().Error("unable to notify reloading to service manager", zap.Error(err))
 	}
 
-	// after reload, notify system of success or, if
-	// failure, update with status (error message)
-	var err error
 	defer func() {
-		if err != nil {
-			if notifyErr := notify.Error(err, 0); notifyErr != nil {
-				Log().Error("unable to notify to service manager of reload error",
-					zap.Error(notifyErr),
-					zap.String("reload_err", err.Error()))
-			}
-			return
-		}
-		if err := notify.Ready(); err != nil {
-			Log().Error("unable to notify to service manager of ready state", zap.Error(err))
+		if err := notify.NotifyReadiness(); err != nil {
+			Log().Error("unable to notify readiness to service manager", zap.Error(err))
 		}
 	}()
 
-	err = changeConfig(http.MethodPost, "/"+rawConfigKey, cfgJSON, "", forceReload)
+	err := changeConfig(http.MethodPost, "/"+rawConfigKey, cfgJSON, forceReload)
 	if errors.Is(err, errSameConfig) {
 		err = nil // not really an error
 	}
-
 	return err
 }
 
@@ -138,14 +125,7 @@ func Load(cfgJSON []byte, forceReload bool) error {
 // occur unless forceReload is true. If the config is unchanged and not
 // forcefully reloaded, then errConfigUnchanged This function is safe for
 // concurrent use.
-// The ifMatchHeader can optionally be given a string of the format:
-//
-//	"<path> <hash>"
-//
-// where <path> is the absolute path in the config and <hash> is the expected hash of
-// the config at that path. If the hash in the ifMatchHeader doesn't match
-// the hash of the config, then an APIError with status 412 will be returned.
-func changeConfig(method, path string, input []byte, ifMatchHeader string, forceReload bool) error {
+func changeConfig(method, path string, input []byte, forceReload bool) error {
 	switch method {
 	case http.MethodGet,
 		http.MethodHead,
@@ -155,42 +135,8 @@ func changeConfig(method, path string, input []byte, ifMatchHeader string, force
 		return fmt.Errorf("method not allowed")
 	}
 
-	currentCtxMu.Lock()
-	defer currentCtxMu.Unlock()
-
-	if ifMatchHeader != "" {
-		// expect the first and last character to be quotes
-		if len(ifMatchHeader) < 2 || ifMatchHeader[0] != '"' || ifMatchHeader[len(ifMatchHeader)-1] != '"' {
-			return APIError{
-				HTTPStatus: http.StatusBadRequest,
-				Err:        fmt.Errorf("malformed If-Match header; expect quoted string"),
-			}
-		}
-
-		// read out the parts
-		parts := strings.Fields(ifMatchHeader[1 : len(ifMatchHeader)-1])
-		if len(parts) != 2 {
-			return APIError{
-				HTTPStatus: http.StatusBadRequest,
-				Err:        fmt.Errorf("malformed If-Match header; expect format \"<path> <hash>\""),
-			}
-		}
-
-		// get the current hash of the config
-		// at the given path
-		hash := etagHasher()
-		err := unsyncedConfigAccess(http.MethodGet, parts[0], nil, hash)
-		if err != nil {
-			return err
-		}
-
-		if hex.EncodeToString(hash.Sum(nil)) != parts[1] {
-			return APIError{
-				HTTPStatus: http.StatusPreconditionFailed,
-				Err:        fmt.Errorf("If-Match header did not match current config hash"),
-			}
-		}
-	}
+	currentCfgMu.Lock()
+	defer currentCfgMu.Unlock()
 
 	err := unsyncedConfigAccess(method, path, input, nil)
 	if err != nil {
@@ -231,7 +177,7 @@ func changeConfig(method, path string, input []byte, ifMatchHeader string, force
 			// with what caddy is still running; we need to
 			// unmarshal it again because it's likely that
 			// pointers deep in our rawCfg map were modified
-			var oldCfg any
+			var oldCfg interface{}
 			err2 := json.Unmarshal(rawCfgJSON, &oldCfg)
 			if err2 != nil {
 				err = fmt.Errorf("%v; additionally, restoring old config: %v", err, err2)
@@ -256,18 +202,18 @@ func changeConfig(method, path string, input []byte, ifMatchHeader string, force
 // readConfig traverses the current config to path
 // and writes its JSON encoding to out.
 func readConfig(path string, out io.Writer) error {
-	currentCtxMu.RLock()
-	defer currentCtxMu.RUnlock()
+	currentCfgMu.RLock()
+	defer currentCfgMu.RUnlock()
 	return unsyncedConfigAccess(http.MethodGet, path, nil, out)
 }
 
 // indexConfigObjects recursively searches ptr for object fields named
 // "@id" and maps that ID value to the full configPath in the index.
 // This function is NOT safe for concurrent access; obtain a write lock
-// on currentCtxMu.
-func indexConfigObjects(ptr any, configPath string, index map[string]string) error {
+// on currentCfgMu.
+func indexConfigObjects(ptr interface{}, configPath string, index map[string]string) error {
 	switch val := ptr.(type) {
-	case map[string]any:
+	case map[string]interface{}:
 		for k, v := range val {
 			if k == idKey {
 				switch idVal := v.(type) {
@@ -286,7 +232,7 @@ func indexConfigObjects(ptr any, configPath string, index map[string]string) err
 				return err
 			}
 		}
-	case []any:
+	case []interface{}:
 		// traverse each element of the array recursively
 		for i := range val {
 			err := indexConfigObjects(val[i], path.Join(configPath, strconv.Itoa(i)), index)
@@ -304,7 +250,7 @@ func indexConfigObjects(ptr any, configPath string, index map[string]string) err
 // it as the new config, replacing any other current config.
 // It does NOT update the raw config state, as this is a
 // lower-level function; most callers will want to use Load
-// instead. A write lock on currentCtxMu is required! If
+// instead. A write lock on currentCfgMu is required! If
 // allowPersist is false, it will not be persisted to disk,
 // even if it is configured to.
 func unsyncedDecodeAndRun(cfgJSON []byte, allowPersist bool) error {
@@ -333,17 +279,17 @@ func unsyncedDecodeAndRun(cfgJSON []byte, allowPersist bool) error {
 	}
 
 	// run the new config and start all its apps
-	ctx, err := run(newCfg, true)
+	err = run(newCfg, true)
 	if err != nil {
 		return err
 	}
 
-	// swap old context (including its config) with the new one
-	oldCtx := currentCtx
-	currentCtx = ctx
+	// swap old config with the new one
+	oldCfg := currentCfg
+	currentCfg = newCfg
 
 	// Stop, Cleanup each old app
-	unsyncedStop(oldCtx)
+	unsyncedStop(oldCfg)
 
 	// autosave a non-nil config, if not disabled
 	if allowPersist &&
@@ -387,7 +333,7 @@ func unsyncedDecodeAndRun(cfgJSON []byte, allowPersist bool) error {
 // This is a low-level function; most callers
 // will want to use Run instead, which also
 // updates the config's raw state.
-func run(newCfg *Config, start bool) (Context, error) {
+func run(newCfg *Config, start bool) error {
 	// because we will need to roll back any state
 	// modifications if this function errors, we
 	// keep a single error value and scope all
@@ -418,8 +364,8 @@ func run(newCfg *Config, start bool) (Context, error) {
 			cancel()
 
 			// also undo any other state changes we made
-			if currentCtx.cfg != nil {
-				certmagic.Default.Storage = currentCtx.cfg.storage
+			if currentCfg != nil {
+				certmagic.Default.Storage = currentCfg.storage
 			}
 		}
 	}()
@@ -431,14 +377,14 @@ func run(newCfg *Config, start bool) (Context, error) {
 	}
 	err = newCfg.Logging.openLogs(ctx)
 	if err != nil {
-		return ctx, err
+		return err
 	}
 
 	// start the admin endpoint (and stop any prior one)
 	if start {
 		err = replaceLocalAdminServer(newCfg)
 		if err != nil {
-			return ctx, fmt.Errorf("starting caddy administration endpoint: %v", err)
+			return fmt.Errorf("starting caddy administration endpoint: %v", err)
 		}
 	}
 
@@ -467,7 +413,7 @@ func run(newCfg *Config, start bool) (Context, error) {
 		return nil
 	}()
 	if err != nil {
-		return ctx, err
+		return err
 	}
 
 	// Load and Provision each app and their submodules
@@ -480,18 +426,18 @@ func run(newCfg *Config, start bool) (Context, error) {
 		return nil
 	}()
 	if err != nil {
-		return ctx, err
+		return err
 	}
 
 	if !start {
-		return ctx, nil
+		return nil
 	}
 
 	// Provision any admin routers which may need to access
 	// some of the other apps at runtime
 	err = newCfg.Admin.provisionAdminRouters(ctx)
 	if err != nil {
-		return ctx, err
+		return err
 	}
 
 	// Start
@@ -516,12 +462,12 @@ func run(newCfg *Config, start bool) (Context, error) {
 		return nil
 	}()
 	if err != nil {
-		return ctx, err
+		return err
 	}
 
 	// now that the user's config is running, finish setting up anything else,
 	// such as remote admin endpoint, config loader, etc.
-	return ctx, finishSettingUp(ctx, newCfg)
+	return finishSettingUp(ctx, newCfg)
 }
 
 // finishSettingUp should be run after all apps have successfully started.
@@ -554,7 +500,7 @@ func finishSettingUp(ctx Context, cfg *Config) error {
 
 		runLoadedConfig := func(config []byte) error {
 			logger.Info("applying dynamically-loaded config")
-			err := changeConfig(http.MethodPost, "/"+rawConfigKey, config, "", false)
+			err := changeConfig(http.MethodPost, "/"+rawConfigKey, config, false)
 			if errors.Is(err, errSameConfig) {
 				return err
 			}
@@ -626,10 +572,10 @@ type ConfigLoader interface {
 // stop the others. Stop should only be called
 // if not replacing with a new config.
 func Stop() error {
-	currentCtxMu.Lock()
-	defer currentCtxMu.Unlock()
-	unsyncedStop(currentCtx)
-	currentCtx = Context{}
+	currentCfgMu.Lock()
+	defer currentCfgMu.Unlock()
+	unsyncedStop(currentCfg)
+	currentCfg = nil
 	rawCfgJSON = nil
 	rawCfgIndex = nil
 	rawCfg[rawConfigKey] = nil
@@ -642,13 +588,13 @@ func Stop() error {
 // it is logged and the function continues stopping
 // the next app. This function assumes all apps in
 // cfg were successfully started first.
-func unsyncedStop(ctx Context) {
-	if ctx.cfg == nil {
+func unsyncedStop(cfg *Config) {
+	if cfg == nil {
 		return
 	}
 
 	// stop each app
-	for name, a := range ctx.cfg.apps {
+	for name, a := range cfg.apps {
 		err := a.Stop()
 		if err != nil {
 			log.Printf("[ERROR] stop %s: %v", name, err)
@@ -656,13 +602,13 @@ func unsyncedStop(ctx Context) {
 	}
 
 	// clean up all modules
-	ctx.cfg.cancelFunc()
+	cfg.cancelFunc()
 }
 
 // Validate loads, provisions, and validates
 // cfg, but does not start running it.
 func Validate(cfg *Config) error {
-	_, err := run(cfg, false)
+	err := run(cfg, false)
 	if err == nil {
 		cfg.cancelFunc() // call Cleanup on all modules
 	}
@@ -676,10 +622,6 @@ func Validate(cfg *Config) error {
 // Errors are logged along the way, and an appropriate exit
 // code is emitted.
 func exitProcess(ctx context.Context, logger *zap.Logger) {
-	if err := notify.Stopping(); err != nil {
-		Log().Error("unable to notify service manager of stopping state", zap.Error(err))
-	}
-
 	if logger == nil {
 		logger = Log()
 	}
@@ -763,12 +705,8 @@ func (d *Duration) UnmarshalJSON(b []byte) error {
 
 // ParseDuration parses a duration string, adding
 // support for the "d" unit meaning number of days,
-// where a day is assumed to be 24h. The maximum
-// input string length is 1024.
+// where a day is assumed to be 24h.
 func ParseDuration(s string) (time.Duration, error) {
-	if len(s) > 1024 {
-		return 0, fmt.Errorf("parsing duration: input string too long")
-	}
 	var inNumber bool
 	var numStart int
 	for i := 0; i < len(s); i++ {
@@ -813,106 +751,36 @@ func InstanceID() (uuid.UUID, error) {
 	return uuid.ParseBytes(uuidFileBytes)
 }
 
-// Version returns the Caddy version in a simple/short form, and
-// a full version string. The short form will not have spaces and
-// is intended for User-Agent strings and similar, but may be
-// omitting valuable information. Note that Caddy must be compiled
-// in a special way to properly embed complete version information.
-// First this function tries to get the version from the embedded
-// build info provided by go.mod dependencies; then it tries to
-// get info from embedded VCS information, which requires having
-// built Caddy from a git repository. If no version is available,
-// this function returns "(devel)" becaise Go uses that, but for
-// the simple form we change it to "unknown".
-//
-// See relevant Go issues: https://github.com/golang/go/issues/29228
-// and https://github.com/golang/go/issues/50603.
-//
-// This function is experimental and subject to change or removal.
-func Version() (simple, full string) {
-	// the currently-recommended way to build Caddy involves
-	// building it as a dependency so we can extract version
-	// information from go.mod tooling; once the upstream
-	// Go issues are fixed, we should just be able to use
-	// bi.Main... hopefully.
-	var module *debug.Module
-	bi, ok := debug.ReadBuildInfo()
-	if ok {
-		// find the Caddy module in the dependency list
-		for _, dep := range bi.Deps {
-			if dep.Path == ImportPath {
-				module = dep
-				break
-			}
-		}
-	}
-	if module != nil {
-		simple, full = module.Version, module.Version
-		if module.Sum != "" {
-			full += " " + module.Sum
-		}
-		if module.Replace != nil {
-			full += " => " + module.Replace.Path
-			if module.Replace.Version != "" {
-				simple = module.Replace.Version + "_custom"
-				full += "@" + module.Replace.Version
-			}
-			if module.Replace.Sum != "" {
-				full += " " + module.Replace.Sum
-			}
-		}
-	}
-
-	if full == "" {
-		var vcsRevision string
-		var vcsTime time.Time
-		var vcsModified bool
-		for _, setting := range bi.Settings {
-			switch setting.Key {
-			case "vcs.revision":
-				vcsRevision = setting.Value
-			case "vcs.time":
-				vcsTime, _ = time.Parse(time.RFC3339, setting.Value)
-			case "vcs.modified":
-				vcsModified, _ = strconv.ParseBool(setting.Value)
-			}
-		}
-
-		if vcsRevision != "" {
-			var modified string
-			if vcsModified {
-				modified = "+modified"
-			}
-			full = fmt.Sprintf("%s%s (%s)", vcsRevision, modified, vcsTime.Format(time.RFC822))
-			simple = vcsRevision
-
-			// use short checksum for simple, if hex-only
-			if _, err := hex.DecodeString(simple); err == nil {
-				simple = simple[:8]
-			}
-
-			// append date to simple since it can be convenient
-			// to know the commit date as part of the version
-			if !vcsTime.IsZero() {
-				simple += "-" + vcsTime.Format("20060102")
-			}
-		}
-	}
-
-	if simple == "" || simple == "(devel)" {
-		simple = "unknown"
-	}
-
-	return
+// GoModule returns the build info of this Caddy
+// build from debug.BuildInfo (requires Go modules).
+// If no version information is available, a non-nil
+// value will still be returned, but with an
+// unknown version.
+func GoModule() *debug.Module {
+	var mod debug.Module
+	return goModule(&mod)
 }
 
-// ActiveContext returns the currently-active context.
-// This function is experimental and might be changed
-// or removed in the future.
-func ActiveContext() Context {
-	currentCtxMu.RLock()
-	defer currentCtxMu.RUnlock()
-	return currentCtx
+// goModule holds the actual implementation of GoModule.
+// Allocating debug.Module in GoModule() and passing a
+// reference to goModule enables mid-stack inlining.
+func goModule(mod *debug.Module) *debug.Module {
+	mod.Version = "unknown"
+	bi, ok := debug.ReadBuildInfo()
+	if ok {
+		mod.Path = bi.Main.Path
+		// The recommended way to build Caddy involves
+		// creating a separate main module, which
+		// TODO: track related Go issue: https://github.com/golang/go/issues/29228
+		// once that issue is fixed, we should just be able to use bi.Main... hopefully.
+		for _, dep := range bi.Deps {
+			if dep.Path == ImportPath {
+				return dep
+			}
+		}
+		return &bi.Main
+	}
+	return mod
 }
 
 // CtxKey is a value type for use with context.WithValue.
@@ -920,21 +788,18 @@ type CtxKey string
 
 // This group of variables pertains to the current configuration.
 var (
-	// currentCtxMu protects everything in this var block.
-	currentCtxMu sync.RWMutex
+	// currentCfgMu protects everything in this var block.
+	currentCfgMu sync.RWMutex
 
-	// currentCtx is the root context for the currently-running
-	// configuration, which can be accessed through this value.
-	// If the Config contained in this value is not nil, then
-	// a config is currently active/running.
-	currentCtx Context
+	// currentCfg is the currently-running configuration.
+	currentCfg *Config
 
 	// rawCfg is the current, generic-decoded configuration;
 	// we initialize it as a map with one field ("config")
 	// to maintain parity with the API endpoint and to avoid
 	// the special case of having to access/mutate the variable
 	// directly without traversing into it.
-	rawCfg = map[string]any{
+	rawCfg = map[string]interface{}{
 		rawConfigKey: nil,
 	}
 
@@ -953,5 +818,4 @@ var (
 var errSameConfig = errors.New("config is unchanged")
 
 // ImportPath is the package import path for Caddy core.
-// This identifier may be removed in the future.
 const ImportPath = "github.com/caddyserver/caddy/v2"

caddyconfig/caddyfile/adapter.go

@@ -29,12 +29,12 @@ type Adapter struct {
 }
 
 // Adapt converts the Caddyfile config in body to Caddy JSON.
-func (a Adapter) Adapt(body []byte, options map[string]any) ([]byte, []caddyconfig.Warning, error) {
+func (a Adapter) Adapt(body []byte, options map[string]interface{}) ([]byte, []caddyconfig.Warning, error) {
 	if a.ServerType == nil {
 		return nil, nil, fmt.Errorf("no server type")
 	}
 	if options == nil {
-		options = make(map[string]any)
+		options = make(map[string]interface{})
 	}
 
 	filename, _ := options["filename"].(string)
@@ -116,7 +116,7 @@ type ServerType interface {
 	// (e.g. CLI flags) and creates a Caddy
 	// config, along with any warnings or
 	// an error.
-	Setup([]ServerBlock, map[string]any) (*caddy.Config, []caddyconfig.Warning, error)
+	Setup([]ServerBlock, map[string]interface{}) (*caddy.Config, []caddyconfig.Warning, error)
 }
 
 // UnmarshalModule instantiates a module with the given ID and invokes

caddyconfig/caddyfile/dispenser.go

@@ -146,15 +146,15 @@ func (d *Dispenser) NextLine() bool {
 //
 // Proper use of this method looks like this:
 //
-//	for nesting := d.Nesting(); d.NextBlock(nesting); {
-//	}
+//     for nesting := d.Nesting(); d.NextBlock(nesting); {
+//     }
 //
 // However, in simple cases where it is known that the
 // Dispenser is new and has not already traversed state
 // by a loop over NextBlock(), this will do:
 //
-//	for d.NextBlock(0) {
-//	}
+//     for d.NextBlock(0) {
+//     }
 //
 // As with other token parsing logic, a loop over
 // NextBlock() should be contained within a loop over
@@ -217,7 +217,7 @@ func (d *Dispenser) ValRaw() string {
 
 // ScalarVal gets value of the current token, converted to the closest
 // scalar type. If there is no token loaded, it returns nil.
-func (d *Dispenser) ScalarVal() any {
+func (d *Dispenser) ScalarVal() interface{} {
 	if d.cursor < 0 || d.cursor >= len(d.tokens) {
 		return nil
 	}
@@ -412,7 +412,7 @@ func (d *Dispenser) Err(msg string) error {
 }
 
 // Errf is like Err, but for formatted error messages
-func (d *Dispenser) Errf(format string, args ...any) error {
+func (d *Dispenser) Errf(format string, args ...interface{}) error {
 	return d.WrapErr(fmt.Errorf(format, args...))
 }
 

caddyconfig/caddyfile/formatter.go

@@ -153,10 +153,7 @@ func Format(input []byte) []byte {
 			openBraceWritten = true
 			nextLine()
 			newLines = 0
-			// prevent infinite nesting from ridiculous inputs (issue #4169)
-			if nesting < 10 {
-				nesting++
-			}
+			nesting++
 		}
 
 		switch {

caddyconfig/caddyfile/formatter_fuzz.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build gofuzz
+// +build gofuzz
 
 package caddyfile
 

caddyconfig/caddyfile/lexer.go

@@ -191,7 +191,3 @@ func Tokenize(input []byte, filename string) ([]Token, error) {
 	}
 	return tokens, nil
 }
-
-func (t Token) Quoted() bool {
-	return t.wasQuoted > 0
-}

caddyconfig/caddyfile/lexer_fuzz.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build gofuzz
+// +build gofuzz
 
 package caddyfile
 

caddyconfig/configadapters.go

@@ -24,7 +24,7 @@ import (
 // Adapter is a type which can adapt a configuration to Caddy JSON.
 // It returns the results and any warnings, or an error.
 type Adapter interface {
-	Adapt(body []byte, options map[string]any) ([]byte, []Warning, error)
+	Adapt(body []byte, options map[string]interface{}) ([]byte, []Warning, error)
 }
 
 // Warning represents a warning or notice related to conversion.
@@ -48,7 +48,7 @@ func (w Warning) String() string {
 // are converted to warnings. This is convenient when filling config
 // structs that require a json.RawMessage, without having to worry
 // about errors.
-func JSON(val any, warnings *[]Warning) json.RawMessage {
+func JSON(val interface{}, warnings *[]Warning) json.RawMessage {
 	b, err := json.Marshal(val)
 	if err != nil {
 		if warnings != nil {
@@ -64,9 +64,9 @@ func JSON(val any, warnings *[]Warning) json.RawMessage {
 // for encoding module values where the module name has to be described within
 // the object by a certain key; for example, `"handler": "file_server"` for a
 // file server HTTP handler (fieldName="handler" and fieldVal="file_server").
-// The val parameter must encode into a map[string]any (i.e. it must be
+// The val parameter must encode into a map[string]interface{} (i.e. it must be
 // a struct or map). Any errors are converted into warnings.
-func JSONModuleObject(val any, fieldName, fieldVal string, warnings *[]Warning) json.RawMessage {
+func JSONModuleObject(val interface{}, fieldName, fieldVal string, warnings *[]Warning) json.RawMessage {
 	// encode to a JSON object first
 	enc, err := json.Marshal(val)
 	if err != nil {
@@ -77,7 +77,7 @@ func JSONModuleObject(val any, fieldName, fieldVal string, warnings *[]Warning)
 	}
 
 	// then decode the object
-	var tmp map[string]any
+	var tmp map[string]interface{}
 	err = json.Unmarshal(enc, &tmp)
 	if err != nil {
 		if warnings != nil {

caddyconfig/httpcaddyfile/addresses.go

@@ -17,7 +17,6 @@ package httpcaddyfile
 import (
 	"fmt"
 	"net"
-	"net/netip"
 	"reflect"
 	"sort"
 	"strconv"
@@ -36,12 +35,12 @@ import (
 // server block that share the same address stay grouped together so the config
 // isn't repeated unnecessarily. For example, this Caddyfile:
 //
-//	example.com {
-//		bind 127.0.0.1
-//	}
-//	www.example.com, example.net/path, localhost:9999 {
-//		bind 127.0.0.1 1.2.3.4
-//	}
+// 	example.com {
+// 		bind 127.0.0.1
+// 	}
+// 	www.example.com, example.net/path, localhost:9999 {
+// 		bind 127.0.0.1 1.2.3.4
+// 	}
 //
 // has two server blocks to start with. But expressed in this Caddyfile are
 // actually 4 listener addresses: 127.0.0.1:443, 1.2.3.4:443, 127.0.0.1:9999,
@@ -77,7 +76,7 @@ import (
 // multiple addresses to the same lists of server blocks (a many:many mapping).
 // (Doing this is essentially a map-reduce technique.)
 func (st *ServerType) mapAddressToServerBlocks(originalServerBlocks []serverBlock,
-	options map[string]any) (map[string][]serverBlock, error) {
+	options map[string]interface{}) (map[string][]serverBlock, error) {
 	sbmap := make(map[string][]serverBlock)
 
 	for i, sblock := range originalServerBlocks {
@@ -184,10 +183,8 @@ func (st *ServerType) consolidateAddrMappings(addrToServerBlocks map[string][]se
 	return sbaddrs
 }
 
-// listenerAddrsForServerBlockKey essentially converts the Caddyfile
-// site addresses to Caddy listener addresses for each server block.
 func (st *ServerType) listenerAddrsForServerBlockKey(sblock serverBlock, key string,
-	options map[string]any) ([]string, error) {
+	options map[string]interface{}) ([]string, error) {
 	addr, err := ParseAddress(key)
 	if err != nil {
 		return nil, fmt.Errorf("parsing key: %v", err)
@@ -219,7 +216,7 @@ func (st *ServerType) listenerAddrsForServerBlockKey(sblock serverBlock, key str
 		return nil, fmt.Errorf("[%s] scheme and port violate convention", key)
 	}
 
-	// the bind directive specifies hosts (and potentially network), but is optional
+	// the bind directive specifies hosts, but is optional
 	lnHosts := make([]string, 0, len(sblock.pile["bind"]))
 	for _, cfgVal := range sblock.pile["bind"] {
 		lnHosts = append(lnHosts, cfgVal.Value.([]string)...)
@@ -234,27 +231,13 @@ func (st *ServerType) listenerAddrsForServerBlockKey(sblock serverBlock, key str
 
 	// use a map to prevent duplication
 	listeners := make(map[string]struct{})
-	for _, lnHost := range lnHosts {
-		// normally we would simply append the port,
-		// but if lnHost is IPv6, we need to ensure it
-		// is enclosed in [ ]; net.JoinHostPort does
-		// this for us, but lnHost might also have a
-		// network type in front (e.g. "tcp/") leading
-		// to "[tcp/::1]" which causes parsing failures
-		// later; what we need is "tcp/[::1]", so we have
-		// to split the network and host, then re-combine
-		network, host, ok := strings.Cut(lnHost, "/")
-		if !ok {
-			host = network
-			network = ""
+	for _, host := range lnHosts {
+		addr, err := caddy.ParseNetworkAddress(host)
+		if err == nil && addr.IsUnixNetwork() {
+			listeners[host] = struct{}{}
+		} else {
+			listeners[host+":"+lnPort] = struct{}{}
 		}
-		host = strings.Trim(host, "[]") // IPv6
-		networkAddr := caddy.JoinNetworkAddress(network, host, lnPort)
-		addr, err := caddy.ParseNetworkAddress(networkAddr)
-		if err != nil {
-			return nil, fmt.Errorf("parsing network address: %v", err)
-		}
-		listeners[addr.String()] = struct{}{}
 	}
 
 	// now turn map into list
@@ -367,9 +350,9 @@ func (a Address) Normalize() Address {
 
 	// ensure host is normalized if it's an IP address
 	host := strings.TrimSpace(a.Host)
-	if ip, err := netip.ParseAddr(host); err == nil {
-		if ip.Is6() && !ip.Is4() && !ip.Is4In6() {
-			host = ip.String()
+	if ip := net.ParseIP(host); ip != nil {
+		if ipv6 := ip.To16(); ipv6 != nil && ipv6.DefaultMask() == nil {
+			host = ipv6.String()
 		}
 	}
 

caddyconfig/httpcaddyfile/addresses_fuzz.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build gofuzz
+// +build gofuzz
 
 package httpcaddyfile
 

caddyconfig/httpcaddyfile/builtins.go

@@ -48,12 +48,12 @@ func init() {
 	RegisterHandlerDirective("handle", parseHandle)
 	RegisterDirective("handle_errors", parseHandleErrors)
 	RegisterDirective("log", parseLog)
-	RegisterHandlerDirective("skip_log", parseSkipLog)
 }
 
 // parseBind parses the bind directive. Syntax:
 //
-//	bind <addresses...>
+//     bind <addresses...>
+//
 func parseBind(h Helper) ([]ConfigValue, error) {
 	var lnHosts []string
 	for h.Next() {
@@ -64,28 +64,28 @@ func parseBind(h Helper) ([]ConfigValue, error) {
 
 // parseTLS parses the tls directive. Syntax:
 //
-//	tls [<email>|internal]|[<cert_file> <key_file>] {
-//	    protocols <min> [<max>]
-//	    ciphers   <cipher_suites...>
-//	    curves    <curves...>
-//	    client_auth {
-//	        mode                   [request|require|verify_if_given|require_and_verify]
-//	        trusted_ca_cert        <base64_der>
-//	        trusted_ca_cert_file   <filename>
-//	        trusted_leaf_cert      <base64_der>
-//	        trusted_leaf_cert_file <filename>
-//	    }
-//	    alpn      <values...>
-//	    load      <paths...>
-//	    ca        <acme_ca_endpoint>
-//	    ca_root   <pem_file>
-//	    dns       <provider_name> [...]
-//	    on_demand
-//	    eab    <key_id> <mac_key>
-//	    issuer <module_name> [...]
-//	    get_certificate <module_name> [...]
-//	    insecure_secrets_log <log_file>
-//	}
+//     tls [<email>|internal]|[<cert_file> <key_file>] {
+//         protocols <min> [<max>]
+//         ciphers   <cipher_suites...>
+//         curves    <curves...>
+//         client_auth {
+//             mode                   [request|require|verify_if_given|require_and_verify]
+//             trusted_ca_cert        <base64_der>
+//             trusted_ca_cert_file   <filename>
+//             trusted_leaf_cert      <base64_der>
+//             trusted_leaf_cert_file <filename>
+//         }
+//         alpn      <values...>
+//         load      <paths...>
+//         ca        <acme_ca_endpoint>
+//         ca_root   <pem_file>
+//         dns       <provider_name> [...]
+//         on_demand
+//         eab    <key_id> <mac_key>
+//         issuer <module_name> [...]
+//         get_certificate <module_name> [...]
+//     }
+//
 func parseTLS(h Helper) ([]ConfigValue, error) {
 	cp := new(caddytls.ConnectionPolicy)
 	var fileLoader caddytls.FileLoader
@@ -395,12 +395,6 @@ func parseTLS(h Helper) ([]ConfigValue, error) {
 				}
 				onDemand = true
 
-			case "insecure_secrets_log":
-				if !h.NextArg() {
-					return nil, h.ArgErr()
-				}
-				cp.InsecureSecretsLog = h.Val()
-
 			default:
 				return nil, h.Errf("unknown subdirective: %s", h.Val())
 			}
@@ -521,7 +515,8 @@ func parseTLS(h Helper) ([]ConfigValue, error) {
 
 // parseRoot parses the root directive. Syntax:
 //
-//	root [<matcher>] <path>
+//     root [<matcher>] <path>
+//
 func parseRoot(h Helper) (caddyhttp.MiddlewareHandler, error) {
 	var root string
 	for h.Next() {
@@ -545,13 +540,8 @@ func parseVars(h Helper) (caddyhttp.MiddlewareHandler, error) {
 
 // parseRedir parses the redir directive. Syntax:
 //
-//	redir [<matcher>] <to> [<code>]
+//     redir [<matcher>] <to> [<code>]
 //
-// <code> can be "permanent" for 301, "temporary" for 302 (default),
-// a placeholder, or any number in the 3xx range or 401. The special
-// code "html" can be used to redirect only browser clients (will
-// respond with HTTP 200 and no Location header; redirect is performed
-// with JS and a meta tag).
 func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
 	if !h.Next() {
 		return nil, h.ArgErr()
@@ -568,7 +558,6 @@ func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
 	}
 
 	var body string
-	var hdr http.Header
 	switch code {
 	case "permanent":
 		code = "301"
@@ -589,7 +578,7 @@ func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
 `
 		safeTo := html.EscapeString(to)
 		body = fmt.Sprintf(metaRedir, safeTo, safeTo, safeTo, safeTo)
-		code = "200" // don't redirect non-browser clients
+		code = "302"
 	default:
 		// Allow placeholders for the code
 		if strings.HasPrefix(code, "{") {
@@ -612,14 +601,9 @@ func parseRedir(h Helper) (caddyhttp.MiddlewareHandler, error) {
 		}
 	}
 
-	// don't redirect non-browser clients
-	if code != "200" {
-		hdr = http.Header{"Location": []string{to}}
-	}
-
 	return caddyhttp.StaticResponse{
 		StatusCode: caddyhttp.WeakString(code),
-		Headers:    hdr,
+		Headers:    http.Header{"Location": []string{to}},
 		Body:       body,
 	}, nil
 }
@@ -699,11 +683,12 @@ func parseHandleErrors(h Helper) ([]ConfigValue, error) {
 
 // parseLog parses the log directive. Syntax:
 //
-//	log {
-//	    output <writer_module> ...
-//	    format <encoder_module> ...
-//	    level  <level>
-//	}
+//     log {
+//         output <writer_module> ...
+//         format <encoder_module> ...
+//         level  <level>
+//     }
+//
 func parseLog(h Helper) ([]ConfigValue, error) {
 	return parseLogHelper(h, nil)
 }
@@ -862,15 +847,3 @@ func parseLogHelper(h Helper, globalLogNames map[string]struct{}) ([]ConfigValue
 	}
 	return configValues, nil
 }
-
-// parseSkipLog parses the skip_log directive. Syntax:
-//
-//	skip_log [<matcher>]
-func parseSkipLog(h Helper) (caddyhttp.MiddlewareHandler, error) {
-	for h.Next() {
-		if h.NextArg() {
-			return nil, h.ArgErr()
-		}
-	}
-	return caddyhttp.VarsMiddleware{"skip_log": true}, nil
-}

caddyconfig/httpcaddyfile/directives.go

@@ -42,7 +42,6 @@ var directiveOrder = []string{
 	"map",
 	"vars",
 	"root",
-	"skip_log",
 
 	"header",
 	"copy_response_headers", // only in reverse_proxy's handle_response
@@ -143,8 +142,8 @@ func RegisterGlobalOption(opt string, setupFunc UnmarshalGlobalFunc) {
 type Helper struct {
 	*caddyfile.Dispenser
 	// State stores intermediate variables during caddyfile adaptation.
-	State        map[string]any
-	options      map[string]any
+	State        map[string]interface{}
+	options      map[string]interface{}
 	warnings     *[]caddyconfig.Warning
 	matcherDefs  map[string]caddy.ModuleMap
 	parentBlock  caddyfile.ServerBlock
@@ -152,7 +151,7 @@ type Helper struct {
 }
 
 // Option gets the option keyed by name.
-func (h Helper) Option(name string) any {
+func (h Helper) Option(name string) interface{} {
 	return h.options[name]
 }
 
@@ -176,7 +175,7 @@ func (h Helper) Caddyfiles() []string {
 }
 
 // JSON converts val into JSON. Any errors are added to warnings.
-func (h Helper) JSON(val any) json.RawMessage {
+func (h Helper) JSON(val interface{}) json.RawMessage {
 	return caddyconfig.JSON(val, h.warnings)
 }
 
@@ -376,7 +375,7 @@ type ConfigValue struct {
 	// The value to be used when building the config.
 	// Generally its type is associated with the
 	// name of the Class.
-	Value any
+	Value interface{}
 
 	directive string
 }
@@ -407,7 +406,7 @@ func sortRoutes(routes []ConfigValue) {
 			return false
 		}
 
-		// decode the path matchers if there is just one matcher set
+		// decode the path matchers, if there is just one of them
 		var iPM, jPM caddyhttp.MatchPath
 		if len(iRoute.MatcherSetsRaw) == 1 {
 			_ = json.Unmarshal(iRoute.MatcherSetsRaw[0]["path"], &iPM)
@@ -416,45 +415,38 @@ func sortRoutes(routes []ConfigValue) {
 			_ = json.Unmarshal(jRoute.MatcherSetsRaw[0]["path"], &jPM)
 		}
 
-		// if there is only one path in the path matcher, sort by longer path
-		// (more specific) first; missing path matchers or multi-matchers are
-		// treated as zero-length paths
+		// sort by longer path (more specific) first; missing path
+		// matchers or multi-matchers are treated as zero-length paths
 		var iPathLen, jPathLen int
-		if len(iPM) == 1 {
+		if len(iPM) > 0 {
 			iPathLen = len(iPM[0])
 		}
-		if len(jPM) == 1 {
+		if len(jPM) > 0 {
 			jPathLen = len(jPM[0])
 		}
 
 		// some directives involve setting values which can overwrite
-		// each other, so it makes most sense to reverse the order so
+		// eachother, so it makes most sense to reverse the order so
 		// that the lease specific matcher is first; everything else
 		// has most-specific matcher first
 		if iDir == "vars" {
-			// we can only confidently compare path lengths if both
-			// directives have a single path to match (issue #5037)
-			if iPathLen > 0 && jPathLen > 0 {
-				// sort least-specific (shortest) path first
-				return iPathLen < jPathLen
+			// if both directives have no path matcher, use whichever one
+			// has no matcher first.
+			if iPathLen == 0 && jPathLen == 0 {
+				return len(iRoute.MatcherSetsRaw) == 0 && len(jRoute.MatcherSetsRaw) > 0
 			}
 
-			// if both directives don't have a single path to compare,
-			// sort whichever one has no matcher first; if both have
-			// no matcher, sort equally (stable sort preserves order)
-			return len(iRoute.MatcherSetsRaw) == 0 && len(jRoute.MatcherSetsRaw) > 0
+			// sort with the least-specific (shortest) path first
+			return iPathLen < jPathLen
 		} else {
-			// we can only confidently compare path lengths if both
-			// directives have a single path to match (issue #5037)
-			if iPathLen > 0 && jPathLen > 0 {
-				// sort most-specific (longest) path first
-				return iPathLen > jPathLen
+			// if both directives have no path matcher, use whichever one
+			// has any kind of matcher defined first.
+			if iPathLen == 0 && jPathLen == 0 {
+				return len(iRoute.MatcherSetsRaw) > 0 && len(jRoute.MatcherSetsRaw) == 0
 			}
 
-			// if both directives don't have a single path to compare,
-			// sort whichever one has a matcher first; if both have
-			// a matcher, sort equally (stable sort preserves order)
-			return len(iRoute.MatcherSetsRaw) > 0 && len(jRoute.MatcherSetsRaw) == 0
+			// sort with the most-specific (longest) path first
+			return iPathLen > jPathLen
 		}
 	})
 }
@@ -575,7 +567,7 @@ type (
 	// tokens from a global option. It is passed the tokens to parse and
 	// existing value from the previous instance of this global option
 	// (if any). It returns the value to associate with this global option.
-	UnmarshalGlobalFunc func(d *caddyfile.Dispenser, existingVal any) (any, error)
+	UnmarshalGlobalFunc func(d *caddyfile.Dispenser, existingVal interface{}) (interface{}, error)
 )
 
 var registeredDirectives = make(map[string]UnmarshalFunc)

caddyconfig/httpcaddyfile/httptype.go

@@ -53,18 +53,27 @@ type ServerType struct {
 
 // Setup makes a config from the tokens.
 func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
-	options map[string]any) (*caddy.Config, []caddyconfig.Warning, error) {
+	options map[string]interface{}) (*caddy.Config, []caddyconfig.Warning, error) {
 	var warnings []caddyconfig.Warning
 	gc := counter{new(int)}
-	state := make(map[string]any)
+	state := make(map[string]interface{})
 
-	// load all the server blocks and associate them with a "pile" of config values
+	// load all the server blocks and associate them with a "pile"
+	// of config values; also prohibit duplicate keys because they
+	// can make a config confusing if more than one server block is
+	// chosen to handle a request - we actually will make each
+	// server block's route terminal so that only one will run
+	sbKeys := make(map[string]struct{})
 	originalServerBlocks := make([]serverBlock, 0, len(inputServerBlocks))
-	for _, sblock := range inputServerBlocks {
+	for i, sblock := range inputServerBlocks {
 		for j, k := range sblock.Keys {
 			if j == 0 && strings.HasPrefix(k, "@") {
 				return nil, warnings, fmt.Errorf("cannot define a matcher outside of a site block: '%s'", k)
 			}
+			if _, ok := sbKeys[k]; ok {
+				return nil, warnings, fmt.Errorf("duplicate site address not allowed: '%s' in %v (site block %d, key %d)", k, sblock.Keys, i, j)
+			}
+			sbKeys[k] = struct{}{}
 		}
 		originalServerBlocks = append(originalServerBlocks, serverBlock{
 			block: sblock,
@@ -91,17 +100,14 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
 		search  *regexp.Regexp
 		replace string
 	}{
-		{regexp.MustCompile(`{header\.([\w-]*)}`), "{http.request.header.$1}"},
-		{regexp.MustCompile(`{cookie\.([\w-]*)}`), "{http.request.cookie.$1}"},
-		{regexp.MustCompile(`{labels\.([\w-]*)}`), "{http.request.host.labels.$1}"},
-		{regexp.MustCompile(`{path\.([\w-]*)}`), "{http.request.uri.path.$1}"},
-		{regexp.MustCompile(`{file\.([\w-]*)}`), "{http.request.uri.path.file.$1}"},
 		{regexp.MustCompile(`{query\.([\w-]*)}`), "{http.request.uri.query.$1}"},
+		{regexp.MustCompile(`{labels\.([\w-]*)}`), "{http.request.host.labels.$1}"},
+		{regexp.MustCompile(`{header\.([\w-]*)}`), "{http.request.header.$1}"},
+		{regexp.MustCompile(`{path\.([\w-]*)}`), "{http.request.uri.path.$1}"},
 		{regexp.MustCompile(`{re\.([\w-]*)\.([\w-]*)}`), "{http.regexp.$1.$2}"},
 		{regexp.MustCompile(`{vars\.([\w-]*)}`), "{http.vars.$1}"},
 		{regexp.MustCompile(`{rp\.([\w-\.]*)}`), "{http.reverse_proxy.$1}"},
 		{regexp.MustCompile(`{err\.([\w-\.]*)}`), "{http.error.$1}"},
-		{regexp.MustCompile(`{file_match\.([\w-]*)}`), "{http.matchers.file.$1}"},
 	}
 
 	for _, sb := range originalServerBlocks {
@@ -193,11 +199,10 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
 
 	// now that each server is configured, make the HTTP app
 	httpApp := caddyhttp.App{
-		HTTPPort:      tryInt(options["http_port"], &warnings),
-		HTTPSPort:     tryInt(options["https_port"], &warnings),
-		GracePeriod:   tryDuration(options["grace_period"], &warnings),
-		ShutdownDelay: tryDuration(options["shutdown_delay"], &warnings),
-		Servers:       servers,
+		HTTPPort:    tryInt(options["http_port"], &warnings),
+		HTTPSPort:   tryInt(options["https_port"], &warnings),
+		GracePeriod: tryDuration(options["grace_period"], &warnings),
+		Servers:     servers,
 	}
 
 	// then make the TLS app
@@ -223,7 +228,7 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
 			hasDefaultLog = true
 		}
 		if _, ok := options["debug"]; ok && ncl.log.Level == "" {
-			ncl.log.Level = zap.DebugLevel.CapitalString()
+			ncl.log.Level = "DEBUG"
 		}
 		customLogs = append(customLogs, ncl)
 	}
@@ -241,7 +246,7 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
 		if _, ok := options["debug"]; ok {
 			customLogs = append(customLogs, namedCustomLog{
 				name: "default",
-				log:  &caddy.CustomLog{Level: zap.DebugLevel.CapitalString()},
+				log:  &caddy.CustomLog{Level: "DEBUG"},
 			})
 		}
 	}
@@ -317,14 +322,14 @@ func (st ServerType) Setup(inputServerBlocks []caddyfile.ServerBlock,
 // which is expected to be the first server block if it has zero
 // keys. It returns the updated list of server blocks with the
 // global options block removed, and updates options accordingly.
-func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options map[string]any) ([]serverBlock, error) {
+func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options map[string]interface{}) ([]serverBlock, error) {
 	if len(serverBlocks) == 0 || len(serverBlocks[0].block.Keys) > 0 {
 		return serverBlocks, nil
 	}
 
 	for _, segment := range serverBlocks[0].block.Segments {
 		opt := segment.Directive()
-		var val any
+		var val interface{}
 		var err error
 		disp := caddyfile.NewDispenser(segment)
 
@@ -394,7 +399,7 @@ func (ServerType) evaluateGlobalOptionsBlock(serverBlocks []serverBlock, options
 // to server blocks. Each pairing is essentially a server definition.
 func (st *ServerType) serversFromPairings(
 	pairings []sbAddrAssociation,
-	options map[string]any,
+	options map[string]interface{},
 	warnings *[]caddyconfig.Warning,
 	groupCounter counter,
 ) (map[string]*caddyhttp.Server, error) {
@@ -415,23 +420,6 @@ func (st *ServerType) serversFromPairings(
 	}
 
 	for i, p := range pairings {
-		// detect ambiguous site definitions: server blocks which
-		// have the same host bound to the same interface (listener
-		// address), otherwise their routes will improperly be added
-		// to the same server (see issue #4635)
-		for j, sblock1 := range p.serverBlocks {
-			for _, key := range sblock1.block.Keys {
-				for k, sblock2 := range p.serverBlocks {
-					if k == j {
-						continue
-					}
-					if sliceContains(sblock2.block.Keys, key) {
-						return nil, fmt.Errorf("ambiguous site definition: %s", key)
-					}
-				}
-			}
-		}
-
 		srv := &caddyhttp.Server{
 			Listen: p.addresses,
 		}
@@ -729,7 +717,7 @@ func (st *ServerType) serversFromPairings(
 	return servers, nil
 }
 
-func detectConflictingSchemes(srv *caddyhttp.Server, serverBlocks []serverBlock, options map[string]any) error {
+func detectConflictingSchemes(srv *caddyhttp.Server, serverBlocks []serverBlock, options map[string]interface{}) error {
 	httpPort := strconv.Itoa(caddyhttp.DefaultHTTPPort)
 	if hp, ok := options["http_port"].(int); ok {
 		httpPort = strconv.Itoa(hp)
@@ -955,7 +943,7 @@ func appendSubrouteToRouteList(routeList caddyhttp.RouteList,
 func buildSubroute(routes []ConfigValue, groupCounter counter) (*caddyhttp.Subroute, error) {
 	for _, val := range routes {
 		if !directiveIsOrdered(val.directive) {
-			return nil, fmt.Errorf("directive '%s' is not an ordered HTTP handler, so it cannot be used here", val.directive)
+			return nil, fmt.Errorf("directive '%s' is not ordered, so it cannot be used here", val.directive)
 		}
 	}
 
@@ -1203,7 +1191,6 @@ func (st *ServerType) compileEncodedMatcherSets(sblock serverBlock) ([]caddy.Mod
 
 func parseMatcherDefinitions(d *caddyfile.Dispenser, matchers map[string]caddy.ModuleMap) error {
 	for d.Next() {
-		// this is the "name" for "named matchers"
 		definitionName := d.Val()
 
 		if _, ok := matchers[definitionName]; ok {
@@ -1211,9 +1198,16 @@ func parseMatcherDefinitions(d *caddyfile.Dispenser, matchers map[string]caddy.M
 		}
 		matchers[definitionName] = make(caddy.ModuleMap)
 
-		// given a matcher name and the tokens following it, parse
-		// the tokens as a matcher module and record it
-		makeMatcher := func(matcherName string, tokens []caddyfile.Token) error {
+		// in case there are multiple instances of the same matcher, concatenate
+		// their tokens (we expect that UnmarshalCaddyfile should be able to
+		// handle more than one segment); otherwise, we'd overwrite other
+		// instances of the matcher in this set
+		tokensByMatcherName := make(map[string][]caddyfile.Token)
+		for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
+			matcherName := d.Val()
+			tokensByMatcherName[matcherName] = append(tokensByMatcherName[matcherName], d.NextSegment()...)
+		}
+		for matcherName, tokens := range tokensByMatcherName {
 			mod, err := caddy.GetModule("http.matchers." + matcherName)
 			if err != nil {
 				return fmt.Errorf("getting matcher module '%s': %v", matcherName, err)
@@ -1231,39 +1225,6 @@ func parseMatcherDefinitions(d *caddyfile.Dispenser, matchers map[string]caddy.M
 				return fmt.Errorf("matcher module '%s' is not a request matcher", matcherName)
 			}
 			matchers[definitionName][matcherName] = caddyconfig.JSON(rm, nil)
-			return nil
-		}
-
-		// if the next token is quoted, we can assume it's not a matcher name
-		// and that it's probably an 'expression' matcher
-		if d.NextArg() {
-			if d.Token().Quoted() {
-				err := makeMatcher("expression", []caddyfile.Token{d.Token()})
-				if err != nil {
-					return err
-				}
-				continue
-			}
-
-			// if it wasn't quoted, then we need to rewind after calling
-			// d.NextArg() so the below properly grabs the matcher name
-			d.Prev()
-		}
-
-		// in case there are multiple instances of the same matcher, concatenate
-		// their tokens (we expect that UnmarshalCaddyfile should be able to
-		// handle more than one segment); otherwise, we'd overwrite other
-		// instances of the matcher in this set
-		tokensByMatcherName := make(map[string][]caddyfile.Token)
-		for nesting := d.Nesting(); d.NextArg() || d.NextBlock(nesting); {
-			matcherName := d.Val()
-			tokensByMatcherName[matcherName] = append(tokensByMatcherName[matcherName], d.NextSegment()...)
-		}
-		for matcherName, tokens := range tokensByMatcherName {
-			err := makeMatcher(matcherName, tokens)
-			if err != nil {
-				return err
-			}
 		}
 	}
 	return nil
@@ -1335,7 +1296,7 @@ func WasReplacedPlaceholderShorthand(token string) string {
 
 // tryInt tries to convert val to an integer. If it fails,
 // it downgrades the error to a warning and returns 0.
-func tryInt(val any, warnings *[]caddyconfig.Warning) int {
+func tryInt(val interface{}, warnings *[]caddyconfig.Warning) int {
 	intVal, ok := val.(int)
 	if val != nil && !ok && warnings != nil {
 		*warnings = append(*warnings, caddyconfig.Warning{Message: "not an integer type"})
@@ -1343,7 +1304,7 @@ func tryInt(val any, warnings *[]caddyconfig.Warning) int {
 	return intVal
 }
 
-func tryString(val any, warnings *[]caddyconfig.Warning) string {
+func tryString(val interface{}, warnings *[]caddyconfig.Warning) string {
 	stringVal, ok := val.(string)
 	if val != nil && !ok && warnings != nil {
 		*warnings = append(*warnings, caddyconfig.Warning{Message: "not a string type"})
@@ -1351,7 +1312,7 @@ func tryString(val any, warnings *[]caddyconfig.Warning) string {
 	return stringVal
 }
 
-func tryDuration(val any, warnings *[]caddyconfig.Warning) caddy.Duration {
+func tryDuration(val interface{}, warnings *[]caddyconfig.Warning) caddy.Duration {
 	durationVal, ok := val.(caddy.Duration)
 	if val != nil && !ok && warnings != nil {
 		*warnings = append(*warnings, caddyconfig.Warning{Message: "not a duration type"})

caddyconfig/httpcaddyfile/options.go

@@ -31,13 +31,11 @@ func init() {
 	RegisterGlobalOption("https_port", parseOptHTTPSPort)
 	RegisterGlobalOption("default_bind", parseOptStringList)
 	RegisterGlobalOption("grace_period", parseOptDuration)
-	RegisterGlobalOption("shutdown_delay", parseOptDuration)
 	RegisterGlobalOption("default_sni", parseOptSingleString)
 	RegisterGlobalOption("order", parseOptOrder)
 	RegisterGlobalOption("storage", parseOptStorage)
 	RegisterGlobalOption("storage_clean_interval", parseOptDuration)
 	RegisterGlobalOption("renew_interval", parseOptDuration)
-	RegisterGlobalOption("ocsp_interval", parseOptDuration)
 	RegisterGlobalOption("acme_ca", parseOptSingleString)
 	RegisterGlobalOption("acme_ca_root", parseOptSingleString)
 	RegisterGlobalOption("acme_dns", parseOptACMEDNS)
@@ -56,9 +54,9 @@ func init() {
 	RegisterGlobalOption("preferred_chains", parseOptPreferredChains)
 }
 
-func parseOptTrue(d *caddyfile.Dispenser, _ any) (any, error) { return true, nil }
+func parseOptTrue(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) { return true, nil }
 
-func parseOptHTTPPort(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptHTTPPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	var httpPort int
 	for d.Next() {
 		var httpPortStr string
@@ -74,7 +72,7 @@ func parseOptHTTPPort(d *caddyfile.Dispenser, _ any) (any, error) {
 	return httpPort, nil
 }
 
-func parseOptHTTPSPort(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptHTTPSPort(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	var httpsPort int
 	for d.Next() {
 		var httpsPortStr string
@@ -90,7 +88,7 @@ func parseOptHTTPSPort(d *caddyfile.Dispenser, _ any) (any, error) {
 	return httpsPort, nil
 }
 
-func parseOptOrder(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptOrder(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	newOrder := directiveOrder
 
 	for d.Next() {
@@ -166,7 +164,7 @@ func parseOptOrder(d *caddyfile.Dispenser, _ any) (any, error) {
 	return newOrder, nil
 }
 
-func parseOptStorage(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptStorage(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	if !d.Next() { // consume option name
 		return nil, d.ArgErr()
 	}
@@ -185,7 +183,7 @@ func parseOptStorage(d *caddyfile.Dispenser, _ any) (any, error) {
 	return storage, nil
 }
 
-func parseOptDuration(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptDuration(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	if !d.Next() { // consume option name
 		return nil, d.ArgErr()
 	}
@@ -199,7 +197,7 @@ func parseOptDuration(d *caddyfile.Dispenser, _ any) (any, error) {
 	return caddy.Duration(dur), nil
 }
 
-func parseOptACMEDNS(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptACMEDNS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	if !d.Next() { // consume option name
 		return nil, d.ArgErr()
 	}
@@ -218,7 +216,7 @@ func parseOptACMEDNS(d *caddyfile.Dispenser, _ any) (any, error) {
 	return prov, nil
 }
 
-func parseOptACMEEAB(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptACMEEAB(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	eab := new(acme.EAB)
 	for d.Next() {
 		if d.NextArg() {
@@ -246,7 +244,7 @@ func parseOptACMEEAB(d *caddyfile.Dispenser, _ any) (any, error) {
 	return eab, nil
 }
 
-func parseOptCertIssuer(d *caddyfile.Dispenser, existing any) (any, error) {
+func parseOptCertIssuer(d *caddyfile.Dispenser, existing interface{}) (interface{}, error) {
 	var issuers []certmagic.Issuer
 	if existing != nil {
 		issuers = existing.([]certmagic.Issuer)
@@ -269,7 +267,7 @@ func parseOptCertIssuer(d *caddyfile.Dispenser, existing any) (any, error) {
 	return issuers, nil
 }
 
-func parseOptSingleString(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptSingleString(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	d.Next() // consume parameter name
 	if !d.Next() {
 		return "", d.ArgErr()
@@ -281,7 +279,7 @@ func parseOptSingleString(d *caddyfile.Dispenser, _ any) (any, error) {
 	return val, nil
 }
 
-func parseOptStringList(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptStringList(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	d.Next() // consume parameter name
 	val := d.RemainingArgs()
 	if len(val) == 0 {
@@ -290,7 +288,7 @@ func parseOptStringList(d *caddyfile.Dispenser, _ any) (any, error) {
 	return val, nil
 }
 
-func parseOptAdmin(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptAdmin(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	adminCfg := new(caddy.AdminConfig)
 	for d.Next() {
 		if d.NextArg() {
@@ -326,7 +324,7 @@ func parseOptAdmin(d *caddyfile.Dispenser, _ any) (any, error) {
 	return adminCfg, nil
 }
 
-func parseOptOnDemand(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptOnDemand(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	var ond *caddytls.OnDemandConfig
 	for d.Next() {
 		if d.NextArg() {
@@ -386,7 +384,7 @@ func parseOptOnDemand(d *caddyfile.Dispenser, _ any) (any, error) {
 	return ond, nil
 }
 
-func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	d.Next() // consume parameter name
 	if !d.Next() {
 		return "", d.ArgErr()
@@ -401,11 +399,11 @@ func parseOptAutoHTTPS(d *caddyfile.Dispenser, _ any) (any, error) {
 	return val, nil
 }
 
-func parseServerOptions(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseServerOptions(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	return unmarshalCaddyfileServerOptions(d)
 }
 
-func parseOCSPStaplingOptions(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOCSPStaplingOptions(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	d.Next() // consume option name
 	var val string
 	if !d.AllArgs(&val) {
@@ -421,17 +419,18 @@ func parseOCSPStaplingOptions(d *caddyfile.Dispenser, _ any) (any, error) {
 
 // parseLogOptions parses the global log option. Syntax:
 //
-//	log [name] {
-//	    output  <writer_module> ...
-//	    format  <encoder_module> ...
-//	    level   <level>
-//	    include <namespaces...>
-//	    exclude <namespaces...>
-//	}
+//     log [name] {
+//         output  <writer_module> ...
+//         format  <encoder_module> ...
+//         level   <level>
+//         include <namespaces...>
+//         exclude <namespaces...>
+//     }
 //
 // When the name argument is unspecified, this directive modifies the default
 // logger.
-func parseLogOptions(d *caddyfile.Dispenser, existingVal any) (any, error) {
+//
+func parseLogOptions(d *caddyfile.Dispenser, existingVal interface{}) (interface{}, error) {
 	currentNames := make(map[string]struct{})
 	if existingVal != nil {
 		innerVals, ok := existingVal.([]ConfigValue)
@@ -466,7 +465,7 @@ func parseLogOptions(d *caddyfile.Dispenser, existingVal any) (any, error) {
 	return configValues, nil
 }
 
-func parseOptPreferredChains(d *caddyfile.Dispenser, _ any) (any, error) {
+func parseOptPreferredChains(d *caddyfile.Dispenser, _ interface{}) (interface{}, error) {
 	d.Next()
 	return caddytls.ParseCaddyfilePreferredChainsOptions(d)
 }

caddyconfig/httpcaddyfile/pkiapp.go

@@ -45,7 +45,8 @@ func init() {
 //     }
 //
 // When the CA ID is unspecified, 'local' is assumed.
-func parsePKIApp(d *caddyfile.Dispenser, existingVal any) (any, error) {
+//
+func parsePKIApp(d *caddyfile.Dispenser, existingVal interface{}) (interface{}, error) {
 	pki := &caddypki.PKI{CAs: make(map[string]*caddypki.CA)}
 
 	for d.Next() {
@@ -159,7 +160,7 @@ func parsePKIApp(d *caddyfile.Dispenser, existingVal any) (any, error) {
 
 func (st ServerType) buildPKIApp(
 	pairings []sbAddrAssociation,
-	options map[string]any,
+	options map[string]interface{},
 	warnings []caddyconfig.Warning,
 ) (*caddypki.PKI, []caddyconfig.Warning, error) {
 

caddyconfig/httpcaddyfile/serveroptions.go

@@ -38,15 +38,14 @@ type serverOptions struct {
 	ReadHeaderTimeout    caddy.Duration
 	WriteTimeout         caddy.Duration
 	IdleTimeout          caddy.Duration
-	KeepAliveInterval    caddy.Duration
 	MaxHeaderBytes       int
-	Protocols            []string
+	AllowH2C             bool
+	ExperimentalHTTP3    bool
 	StrictSNIHost        *bool
 	ShouldLogCredentials bool
-	Metrics              *caddyhttp.Metrics
 }
 
-func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (any, error) {
+func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (interface{}, error) {
 	serverOpts := serverOptions{}
 	for d.Next() {
 		if d.NextArg() {
@@ -124,15 +123,6 @@ func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (any, error) {
 						return nil, d.Errf("unrecognized timeouts option '%s'", d.Val())
 					}
 				}
-			case "keepalive_interval":
-				if !d.NextArg() {
-					return nil, d.ArgErr()
-				}
-				dur, err := caddy.ParseDuration(d.Val())
-				if err != nil {
-					return nil, d.Errf("parsing keepalive interval duration: %v", err)
-				}
-				serverOpts.KeepAliveInterval = caddy.Duration(dur)
 
 			case "max_header_size":
 				var sizeStr string
@@ -151,60 +141,22 @@ func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (any, error) {
 				}
 				serverOpts.ShouldLogCredentials = true
 
-			case "protocols":
-				protos := d.RemainingArgs()
-				for _, proto := range protos {
-					if proto != "h1" && proto != "h2" && proto != "h2c" && proto != "h3" {
-						return nil, d.Errf("unknown protocol '%s': expected h1, h2, h2c, or h3", proto)
-					}
-					if sliceContains(serverOpts.Protocols, proto) {
-						return nil, d.Errf("protocol %s specified more than once", proto)
-					}
-					serverOpts.Protocols = append(serverOpts.Protocols, proto)
-				}
-				if d.NextBlock(0) {
-					return nil, d.ArgErr()
-				}
-
-			case "strict_sni_host":
-				if d.NextArg() && d.Val() != "insecure_off" && d.Val() != "on" {
-					return nil, d.Errf("strict_sni_host only supports 'on' or 'insecure_off', got '%s'", d.Val())
-				}
-				boolVal := true
-				if d.Val() == "insecure_off" {
-					boolVal = false
-				}
-				serverOpts.StrictSNIHost = &boolVal
-
-			case "metrics":
-				if d.NextArg() {
-					return nil, d.ArgErr()
-				}
-				if d.NextBlock(0) {
-					return nil, d.ArgErr()
-				}
-				serverOpts.Metrics = new(caddyhttp.Metrics)
-
-			// TODO: DEPRECATED. (August 2022)
 			case "protocol":
-				caddy.Log().Named("caddyfile").Warn("DEPRECATED: protocol sub-option will be removed soon")
-
 				for nesting := d.Nesting(); d.NextBlock(nesting); {
 					switch d.Val() {
 					case "allow_h2c":
-						caddy.Log().Named("caddyfile").Warn("DEPRECATED: allow_h2c will be removed soon; use protocols option instead")
-
 						if d.NextArg() {
 							return nil, d.ArgErr()
 						}
-						if sliceContains(serverOpts.Protocols, "h2c") {
-							return nil, d.Errf("protocol h2c already specified")
+						serverOpts.AllowH2C = true
+
+					case "experimental_http3":
+						if d.NextArg() {
+							return nil, d.ArgErr()
 						}
-						serverOpts.Protocols = append(serverOpts.Protocols, "h2c")
+						serverOpts.ExperimentalHTTP3 = true
 
 					case "strict_sni_host":
-						caddy.Log().Named("caddyfile").Warn("DEPRECATED: protocol > strict_sni_host in this position will be removed soon; move up to the servers block instead")
-
 						if d.NextArg() && d.Val() != "insecure_off" && d.Val() != "on" {
 							return nil, d.Errf("strict_sni_host only supports 'on' or 'insecure_off', got '%s'", d.Val())
 						}
@@ -230,9 +182,20 @@ func unmarshalCaddyfileServerOptions(d *caddyfile.Dispenser) (any, error) {
 // applyServerOptions sets the server options on the appropriate servers
 func applyServerOptions(
 	servers map[string]*caddyhttp.Server,
-	options map[string]any,
+	options map[string]interface{},
 	warnings *[]caddyconfig.Warning,
 ) error {
+	// If experimental HTTP/3 is enabled, enable it on each server.
+	// We already know there won't be a conflict with serverOptions because
+	// we validated earlier that "experimental_http3" cannot be set at the same
+	// time as "servers"
+	if enableH3, ok := options["experimental_http3"].(bool); ok && enableH3 {
+		*warnings = append(*warnings, caddyconfig.Warning{Message: "the 'experimental_http3' global option is deprecated, please use the 'servers > protocol > experimental_http3' option instead"})
+		for _, srv := range servers {
+			srv.ExperimentalHTTP3 = true
+		}
+	}
+
 	serverOpts, ok := options["servers"].([]serverOptions)
 	if !ok {
 		return nil
@@ -265,11 +228,10 @@ func applyServerOptions(
 		server.ReadHeaderTimeout = opts.ReadHeaderTimeout
 		server.WriteTimeout = opts.WriteTimeout
 		server.IdleTimeout = opts.IdleTimeout
-		server.KeepAliveInterval = opts.KeepAliveInterval
 		server.MaxHeaderBytes = opts.MaxHeaderBytes
-		server.Protocols = opts.Protocols
+		server.AllowH2C = opts.AllowH2C
+		server.ExperimentalHTTP3 = opts.ExperimentalHTTP3
 		server.StrictSNIHost = opts.StrictSNIHost
-		server.Metrics = opts.Metrics
 		if opts.ShouldLogCredentials {
 			if server.Logs == nil {
 				server.Logs = &caddyhttp.ServerLogConfig{}

caddyconfig/httpcaddyfile/tlsapp.go

@@ -33,7 +33,7 @@ import (
 
 func (st ServerType) buildTLSApp(
 	pairings []sbAddrAssociation,
-	options map[string]any,
+	options map[string]interface{},
 	warnings []caddyconfig.Warning,
 ) (*caddytls.TLS, []caddyconfig.Warning, error) {
 
@@ -307,14 +307,6 @@ func (st ServerType) buildTLSApp(
 		tlsApp.Automation.RenewCheckInterval = renewCheckInterval
 	}
 
-	// set the OCSP check interval if configured
-	if ocspCheckInterval, ok := options["ocsp_interval"].(caddy.Duration); ok {
-		if tlsApp.Automation == nil {
-			tlsApp.Automation = new(caddytls.AutomationConfig)
-		}
-		tlsApp.Automation.OCSPCheckInterval = ocspCheckInterval
-	}
-
 	// set whether OCSP stapling should be disabled for manually-managed certificates
 	if ocspConfig, ok := options["ocsp_stapling"].(certmagic.OCSPConfig); ok {
 		tlsApp.DisableOCSPStapling = ocspConfig.DisableStapling
@@ -428,7 +420,7 @@ func (st ServerType) buildTLSApp(
 
 type acmeCapable interface{ GetACMEIssuer() *caddytls.ACMEIssuer }
 
-func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]any) error {
+func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]interface{}) error {
 	acmeWrapper, ok := issuer.(acmeCapable)
 	if !ok {
 		return nil
@@ -475,7 +467,7 @@ func fillInGlobalACMEDefaults(issuer certmagic.Issuer, options map[string]any) e
 // for any other automation policies. A nil policy (and no error) will be
 // returned if there are no default/global options. However, if always is
 // true, a non-nil value will always be returned (unless there is an error).
-func newBaseAutomationPolicy(options map[string]any, warnings []caddyconfig.Warning, always bool) (*caddytls.AutomationPolicy, error) {
+func newBaseAutomationPolicy(options map[string]interface{}, warnings []caddyconfig.Warning, always bool) (*caddytls.AutomationPolicy, error) {
 	issuers, hasIssuers := options["cert_issuer"]
 	_, hasLocalCerts := options["local_certs"]
 	keyType, hasKeyType := options["key_type"]

caddyconfig/httploader.go

@@ -113,7 +113,7 @@ func (hl HTTPLoader) LoadConfig(ctx caddy.Context) ([]byte, error) {
 		return nil, err
 	}
 	for _, warn := range warnings {
-		ctx.Logger().Warn(warn.String())
+		ctx.Logger(hl).Warn(warn.String())
 	}
 
 	return result, nil
@@ -129,7 +129,7 @@ func (hl HTTPLoader) makeClient(ctx caddy.Context) (*http.Client, error) {
 
 		// client authentication
 		if hl.TLS.UseServerIdentity {
-			certs, err := ctx.IdentityCredentials(ctx.Logger())
+			certs, err := ctx.IdentityCredentials(ctx.Logger(hl))
 			if err != nil {
 				return nil, fmt.Errorf("getting server identity credentials: %v", err)
 			}

caddyconfig/load.go

@@ -58,10 +58,6 @@ func (al adminLoad) Routes() []caddy.AdminRoute {
 			Pattern: "/load",
 			Handler: caddy.AdminHandlerFunc(al.handleLoad),
 		},
-		{
-			Pattern: "/adapt",
-			Handler: caddy.AdminHandlerFunc(al.handleAdapt),
-		},
 	}
 }
 
@@ -126,48 +122,7 @@ func (adminLoad) handleLoad(w http.ResponseWriter, r *http.Request) error {
 	return nil
 }
 
-// handleAdapt adapts the given Caddy config to JSON and responds with the result.
-func (adminLoad) handleAdapt(w http.ResponseWriter, r *http.Request) error {
-	if r.Method != http.MethodPost {
-		return caddy.APIError{
-			HTTPStatus: http.StatusMethodNotAllowed,
-			Err:        fmt.Errorf("method not allowed"),
-		}
-	}
-
-	buf := bufPool.Get().(*bytes.Buffer)
-	buf.Reset()
-	defer bufPool.Put(buf)
-
-	_, err := io.Copy(buf, r.Body)
-	if err != nil {
-		return caddy.APIError{
-			HTTPStatus: http.StatusBadRequest,
-			Err:        fmt.Errorf("reading request body: %v", err),
-		}
-	}
-
-	result, warnings, err := adaptByContentType(r.Header.Get("Content-Type"), buf.Bytes())
-	if err != nil {
-		return caddy.APIError{
-			HTTPStatus: http.StatusBadRequest,
-			Err:        err,
-		}
-	}
-
-	out := struct {
-		Warnings []Warning       `json:"warnings,omitempty"`
-		Result   json.RawMessage `json:"result"`
-	}{
-		Warnings: warnings,
-		Result:   result,
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	return json.NewEncoder(w).Encode(out)
-}
-
-// adaptByContentType adapts body to Caddy JSON using the adapter specified by contentType.
+// adaptByContentType adapts body to Caddy JSON using the adapter specified by contenType.
 // If contentType is empty or ends with "/json", the input will be returned, as a no-op.
 func adaptByContentType(contentType string, body []byte) ([]byte, []Warning, error) {
 	// assume JSON as the default
@@ -189,11 +144,12 @@ func adaptByContentType(contentType string, body []byte) ([]byte, []Warning, err
 	}
 
 	// adapter name should be suffix of MIME type
-	_, adapterName, slashFound := strings.Cut(ct, "/")
-	if !slashFound {
+	slashIdx := strings.Index(ct, "/")
+	if slashIdx < 0 {
 		return nil, nil, fmt.Errorf("malformed Content-Type")
 	}
 
+	adapterName := ct[slashIdx+1:]
 	cfgAdapter := GetAdapter(adapterName)
 	if cfgAdapter == nil {
 		return nil, nil, fmt.Errorf("unrecognized config adapter '%s'", adapterName)
@@ -208,7 +164,7 @@ func adaptByContentType(contentType string, body []byte) ([]byte, []Warning, err
 }
 
 var bufPool = sync.Pool{
-	New: func() any {
+	New: func() interface{} {
 		return new(bytes.Buffer)
 	},
 }

caddytest/caddytest.go

@@ -100,7 +100,7 @@ func (tc *Tester) InitServer(rawConfig string, configType string) {
 		tc.t.Fail()
 	}
 	if err := tc.ensureConfigRunning(rawConfig, configType); err != nil {
-		tc.t.Logf("failed ensuring config is running: %s", err)
+		tc.t.Logf("failed ensurng config is running: %s", err)
 		tc.t.Fail()
 	}
 }
@@ -186,7 +186,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
 		expectedBytes, _, _ = adapter.Adapt([]byte(rawConfig), nil)
 	}
 
-	var expected any
+	var expected interface{}
 	err := json.Unmarshal(expectedBytes, &expected)
 	if err != nil {
 		return err
@@ -196,7 +196,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
 		Timeout: Default.LoadRequestTimeout,
 	}
 
-	fetchConfig := func(client *http.Client) any {
+	fetchConfig := func(client *http.Client) interface{} {
 		resp, err := client.Get(fmt.Sprintf("http://localhost:%d/config/", Default.AdminPort))
 		if err != nil {
 			return nil
@@ -206,7 +206,7 @@ func (tc *Tester) ensureConfigRunning(rawConfig string, configType string) error
 		if err != nil {
 			return nil
 		}
-		var actual any
+		var actual interface{}
 		err = json.Unmarshal(actualBytes, &actual)
 		if err != nil {
 			return nil
@@ -371,7 +371,7 @@ func CompareAdapt(t *testing.T, filename, rawConfig string, adapterName string,
 		return false
 	}
 
-	options := make(map[string]any)
+	options := make(map[string]interface{})
 
 	result, warnings, err := cfgAdapter.Adapt([]byte(rawConfig), options)
 	if err != nil {

caddytest/integration/caddyfile_adapt/forward_auth_authelia.txt

@@ -63,6 +63,32 @@ app.example.com {
 																	]
 																}
 															]
+														},
+														{
+															"routes": [
+																{
+																	"handle": [
+																		{
+																			"exclude": [
+																				"Connection",
+																				"Keep-Alive",
+																				"Te",
+																				"Trailers",
+																				"Transfer-Encoding",
+																				"Upgrade"
+																			],
+																			"handler": "copy_response_headers"
+																		}
+																	]
+																},
+																{
+																	"handle": [
+																		{
+																			"handler": "copy_response"
+																		}
+																	]
+																}
+															]
 														}
 													],
 													"handler": "reverse_proxy",

caddytest/integration/caddyfile_adapt/forward_auth_rename_headers.txt

@@ -1,90 +0,0 @@
-:8881
-
-forward_auth localhost:9000 {
-	uri /auth
-	copy_headers A>1 B C>3 {
-		D
-		E>5
-	}
-}
-----------
-{
-	"apps": {
-		"http": {
-			"servers": {
-				"srv0": {
-					"listen": [
-						":8881"
-					],
-					"routes": [
-						{
-							"handle": [
-								{
-									"handle_response": [
-										{
-											"match": {
-												"status_code": [
-													2
-												]
-											},
-											"routes": [
-												{
-													"handle": [
-														{
-															"handler": "headers",
-															"request": {
-																"set": {
-																	"1": [
-																		"{http.reverse_proxy.header.A}"
-																	],
-																	"3": [
-																		"{http.reverse_proxy.header.C}"
-																	],
-																	"5": [
-																		"{http.reverse_proxy.header.E}"
-																	],
-																	"B": [
-																		"{http.reverse_proxy.header.B}"
-																	],
-																	"D": [
-																		"{http.reverse_proxy.header.D}"
-																	]
-																}
-															}
-														}
-													]
-												}
-											]
-										}
-									],
-									"handler": "reverse_proxy",
-									"headers": {
-										"request": {
-											"set": {
-												"X-Forwarded-Method": [
-													"{http.request.method}"
-												],
-												"X-Forwarded-Uri": [
-													"{http.request.uri}"
-												]
-											}
-										}
-									},
-									"rewrite": {
-										"method": "GET",
-										"uri": "/auth"
-									},
-									"upstreams": [
-										{
-											"dial": "localhost:9000"
-										}
-									]
-								}
-							]
-						}
-					]
-				}
-			}
-		}
-	}
-}

caddytest/integration/caddyfile_adapt/global_options.txt

@@ -3,7 +3,6 @@
 	http_port 8080
 	https_port 8443
 	grace_period 5s
-	shutdown_delay 10s
 	default_sni localhost
 	order root first
 	storage file_system {
@@ -46,7 +45,6 @@
 			"http_port": 8080,
 			"https_port": 8443,
 			"grace_period": 5000000000,
-			"shutdown_delay": 10000000000,
 			"servers": {
 				"srv0": {
 					"listen": [

caddytest/integration/caddyfile_adapt/global_options_acme.txt

@@ -22,7 +22,6 @@
 	}
 	storage_clean_interval 7d
 	renew_interval 1d
-	ocsp_interval 2d
 
 	key_type ed25519
 }
@@ -84,7 +83,6 @@
 					},
 					"ask": "https://example.com"
 				},
-				"ocsp_interval": 172800000000000,
 				"renew_interval": 86400000000000,
 				"storage_clean_interval": 604800000000000
 			}

caddytest/integration/caddyfile_adapt/global_server_options_single.txt

@@ -12,8 +12,11 @@
 		}
 		max_header_size 100MB
 		log_credentials
-		strict_sni_host
-		protocols h1 h2 h2c h3
+		protocol {
+			allow_h2c
+			experimental_http3
+			strict_sni_host
+		}
 	}
 }
 
@@ -58,12 +61,8 @@ foo.com {
 					"logs": {
 						"should_log_credentials": true
 					},
-					"protocols": [
-						"h1",
-						"h2",
-						"h2c",
-						"h3"
-					]
+					"experimental_http3": true,
+					"allow_h2c": true
 				}
 			}
 		}

caddytest/integration/caddyfile_adapt/log_except_catchall_blocks.txt

@@ -1,7 +1,5 @@
 http://localhost:2020 {
 	log
-	skip_log /first-hidden*
-	skip_log /second-hidden*
 	respond 200
 }
 
@@ -30,36 +28,6 @@ http://localhost:2020 {
 								{
 									"handler": "subroute",
 									"routes": [
-										{
-											"handle": [
-												{
-													"handler": "vars",
-													"skip_log": true
-												}
-											],
-											"match": [
-												{
-													"path": [
-														"/second-hidden*"
-													]
-												}
-											]
-										},
-										{
-											"handle": [
-												{
-													"handler": "vars",
-													"skip_log": true
-												}
-											],
-											"match": [
-												{
-													"path": [
-														"/first-hidden*"
-													]
-												}
-											]
-										},
 										{
 											"handle": [
 												{

caddytest/integration/caddyfile_adapt/matcher_syntax.txt

@@ -19,30 +19,27 @@
 	@matcher6 vars_regexp "{http.request.uri}" `\.([a-f0-9]{6})\.(css|js)$`
 	respond @matcher6 "from vars_regexp matcher without name"
 
-	@matcher7 `path('/foo*') && method('GET')`
-	respond @matcher7 "inline expression matcher shortcut"
-
-	@matcher8 {
+	@matcher7 {
 		header Foo bar
 		header Foo foobar
 		header Bar foo
 	}
-	respond @matcher8 "header matcher merging values of the same field"
+	respond @matcher7 "header matcher merging values of the same field"
 
-	@matcher9 {
+	@matcher8 {
 		query foo=bar foo=baz bar=foo
 		query bar=baz
 	}
-	respond @matcher9 "query matcher merging pairs with the same keys"
+	respond @matcher8 "query matcher merging pairs with the same keys"
 
-	@matcher10 {
+	@matcher9 {
 		header !Foo
 		header Bar foo
 	}
-	respond @matcher10 "header matcher with null field matcher"
+	respond @matcher9 "header matcher with null field matcher"
 
-	@matcher11 remote_ip private_ranges
-	respond @matcher11 "remote_ip matcher with private ranges"
+	@matcher10 remote_ip private_ranges
+	respond @matcher10 "remote_ip matcher with private ranges"
 }
 ----------
 {
@@ -155,19 +152,6 @@
 								}
 							]
 						},
-						{
-							"match": [
-								{
-									"expression": "path('/foo*') \u0026\u0026 method('GET')"
-								}
-							],
-							"handle": [
-								{
-									"body": "inline expression matcher shortcut",
-									"handler": "static_response"
-								}
-							]
-						},
 						{
 							"match": [
 								{

caddytest/integration/caddyfile_adapt/reverse_proxy_h2c_shorthand.txt

@@ -1,8 +1,6 @@
 :8884
 
 reverse_proxy h2c://localhost:8080
-
-reverse_proxy unix+h2c//run/app.sock
 ----------
 {
 	"apps": {
@@ -29,21 +27,6 @@ reverse_proxy unix+h2c//run/app.sock
 											"dial": "localhost:8080"
 										}
 									]
-								},
-								{
-									"handler": "reverse_proxy",
-									"transport": {
-										"protocol": "http",
-										"versions": [
-											"h2c",
-											"2"
-										]
-									},
-									"upstreams": [
-										{
-											"dial": "unix//run/app.sock"
-										}
-									]
 								}
 							]
 						}

caddytest/integration/caddyfile_adapt/reverse_proxy_load_balance.txt

@@ -1,64 +0,0 @@
-:8884
-
-reverse_proxy 127.0.0.1:65535 {
-	lb_policy first
-	lb_retries 5
-	lb_try_duration 10s
-	lb_try_interval 500ms
-	lb_retry_match {
-		path /foo*
-		method POST
-	}
-	lb_retry_match path /bar*
-}
-----------
-{
-	"apps": {
-		"http": {
-			"servers": {
-				"srv0": {
-					"listen": [
-						":8884"
-					],
-					"routes": [
-						{
-							"handle": [
-								{
-									"handler": "reverse_proxy",
-									"load_balancing": {
-										"retries": 5,
-										"retry_match": [
-											{
-												"method": [
-													"POST"
-												],
-												"path": [
-													"/foo*"
-												]
-											},
-											{
-												"path": [
-													"/bar*"
-												]
-											}
-										],
-										"selection_policy": {
-											"policy": "first"
-										},
-										"try_duration": 10000000000,
-										"try_interval": 500000000
-									},
-									"upstreams": [
-										{
-											"dial": "127.0.0.1:65535"
-										}
-									]
-								}
-							]
-						}
-					]
-				}
-			}
-		}
-	}
-}

caddytest/integration/caddyfile_adapt/reverse_proxy_options.txt

@@ -24,9 +24,7 @@ https://example.com {
 			max_conns_per_host 5
 			keepalive_idle_conns_per_host 2
 			keepalive_interval 30s
-			
-			tls_renegotiation freely
-			tls_except_ports 8181 8182
+			renegotiation freely
 		}
 	}
 }
@@ -95,10 +93,6 @@ https://example.com {
 														},
 														"response_header_timeout": 8000000000,
 														"tls": {
-															"except_ports": [
-																"8181",
-																"8182"
-															],
 															"renegotiation": "freely"
 														},
 														"versions": [

caddytest/integration/caddyfile_test.go

@@ -68,7 +68,7 @@ func TestDuplicateHosts(t *testing.T) {
     }
     `,
 		"caddyfile",
-		"ambiguous site definition")
+		"duplicate site address not allowed")
 }
 
 func TestReadCookie(t *testing.T) {

caddytest/integration/map_test.go

@@ -60,7 +60,7 @@ func TestMapRespondWithDefault(t *testing.T) {
 	tester.AssertPostResponseBody("http://localhost:9080/version", []string{}, bytes.NewBuffer([]byte{}), 200, "hello from localhost unknown")
 }
 
-func TestMapAsJSON(t *testing.T) {
+func TestMapAsJson(t *testing.T) {
 	// arrange
 	tester := caddytest.NewTester(t)
 	tester.InitServer(`
@@ -85,7 +85,7 @@ func TestMapAsJSON(t *testing.T) {
 													{
 														"handler": "map",
 														"source": "{http.request.method}",
-														"destinations": ["{dest-name}"],
+														"destinations": ["dest-name"],
 														"defaults": ["unknown"],
 														"mappings": [
 															{

caddytest/integration/stream_test.go

@@ -123,8 +123,8 @@ func TestH2ToH2CStream(t *testing.T) {
 	// Disable any compression method from server.
 	req.Header.Set("Accept-Encoding", "identity")
 
-	resp := tester.AssertResponseCode(req, http.StatusOK)
-	if resp.StatusCode != http.StatusOK {
+	resp := tester.AssertResponseCode(req, 200)
+	if 200 != resp.StatusCode {
 		return
 	}
 	go func() {
@@ -143,6 +143,7 @@ func TestH2ToH2CStream(t *testing.T) {
 	if !strings.Contains(body, expectedBody) {
 		t.Errorf("requesting \"%s\" expected response body \"%s\" but got \"%s\"", req.RequestURI, expectedBody, body)
 	}
+	return
 }
 
 func testH2ToH2CStreamServeH2C(t *testing.T) *http.Server {
@@ -334,8 +335,8 @@ func TestH2ToH1ChunkedResponse(t *testing.T) {
 		fmt.Fprint(w, expectedBody)
 		w.Close()
 	}()
-	resp := tester.AssertResponseCode(req, http.StatusOK)
-	if resp.StatusCode != http.StatusOK {
+	resp := tester.AssertResponseCode(req, 200)
+	if 200 != resp.StatusCode {
 		return
 	}
 
@@ -350,6 +351,7 @@ func TestH2ToH1ChunkedResponse(t *testing.T) {
 	if body != expectedBody {
 		t.Errorf("requesting \"%s\" expected response body \"%s\" but got \"%s\"", req.RequestURI, expectedBody, body)
 	}
+	return
 }
 
 func testH2ToH1ChunkedResponseServeH1(t *testing.T) *http.Server {

cmd/caddy/main.go

@@ -24,8 +24,6 @@
 //   3. Run `go mod init caddy`
 //   4. Run `go install` or `go build` - you now have a custom binary!
 //
-// Or you can use xcaddy which does it all for you as a command:
-// https://github.com/caddyserver/xcaddy
 package main
 
 import (

cmd/cobra.go

@@ -1,120 +0,0 @@
-package caddycmd
-
-import (
-	"github.com/spf13/cobra"
-)
-
-var rootCmd = &cobra.Command{
-	Use: "caddy",
-	Long: `Caddy is an extensible server platform written in Go.
-
-At its core, Caddy merely manages configuration. Modules are plugged
-in statically at compile-time to provide useful functionality. Caddy's
-standard distribution includes common modules to serve HTTP, TLS,
-and PKI applications, including the automation of certificates.
-
-To run Caddy, use:
-
-	- 'caddy run' to run Caddy in the foreground (recommended).
-	- 'caddy start' to start Caddy in the background; only do this
-	  if you will be keeping the terminal window open until you run
-	  'caddy stop' to close the server.
-
-When Caddy is started, it opens a locally-bound administrative socket
-to which configuration can be POSTed via a restful HTTP API (see
-https://caddyserver.com/docs/api).
-
-Caddy's native configuration format is JSON. However, config adapters
-can be used to convert other config formats to JSON when Caddy receives
-its configuration. The Caddyfile is a built-in config adapter that is
-popular for hand-written configurations due to its straightforward
-syntax (see https://caddyserver.com/docs/caddyfile). Many third-party
-adapters are available (see https://caddyserver.com/docs/config-adapters).
-Use 'caddy adapt' to see how a config translates to JSON.
-
-For convenience, the CLI can act as an HTTP client to give Caddy its
-initial configuration for you. If a file named Caddyfile is in the
-current working directory, it will do this automatically. Otherwise,
-you can use the --config flag to specify the path to a config file.
-
-Some special-purpose subcommands build and load a configuration file
-for you directly from command line input; for example:
-
-	- caddy file-server
-	- caddy reverse-proxy
-	- caddy respond
-
-These commands disable the administration endpoint because their
-configuration is specified solely on the command line.
-
-In general, the most common way to run Caddy is simply:
-
-	$ caddy run
-
-Or, with a configuration file:
-
-	$ caddy run --config caddy.json
-
-If running interactively in a terminal, running Caddy in the
-background may be more convenient:
-
-	$ caddy start
-	...
-	$ caddy stop
-
-This allows you to run other commands while Caddy stays running.
-Be sure to stop Caddy before you close the terminal!
-
-Depending on the system, Caddy may need permission to bind to low
-ports. One way to do this on Linux is to use setcap:
-
-	$ sudo setcap cap_net_bind_service=+ep $(which caddy)
-
-Remember to run that command again after replacing the binary.
-
-See the Caddy website for tutorials, configuration structure,
-syntax, and module documentation: https://caddyserver.com/docs/
-
-Custom Caddy builds are available on the Caddy download page at:
-https://caddyserver.com/download
-
-The xcaddy command can be used to build Caddy from source with or
-without additional plugins: https://github.com/caddyserver/xcaddy
-
-Where possible, Caddy should be installed using officially-supported
-package installers: https://caddyserver.com/docs/install
-
-Instructions for running Caddy in production are also available:
-https://caddyserver.com/docs/running
-`,
-	Example: `  $ caddy run
-  $ caddy run --config caddy.json
-  $ caddy reload --config caddy.json
-  $ caddy stop`,
-
-	// kind of annoying to have all the help text printed out if
-	// caddy has an error provisioning its modules, for instance...
-	SilenceUsage: true,
-}
-
-const fullDocsFooter = `Full documentation is available at:
-https://caddyserver.com/docs/command-line`
-
-func init() {
-	rootCmd.SetHelpTemplate(rootCmd.HelpTemplate() + "\n" + fullDocsFooter)
-}
-
-func caddyCmdToCoral(caddyCmd Command) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   caddyCmd.Name,
-		Short: caddyCmd.Short,
-		Long:  caddyCmd.Long,
-		RunE: func(cmd *cobra.Command, _ []string) error {
-			fls := cmd.Flags()
-			_, err := caddyCmd.Func(Flags{fls})
-			return err
-		},
-	}
-	cmd.Flags().AddGoFlagSet(caddyCmd.Flags)
-	return cmd
-}

cmd/commandfuncs.go

@@ -29,6 +29,7 @@ import (
 	"os/exec"
 	"runtime"
 	"runtime/debug"
+	"sort"
 	"strings"
 
 	"github.com/aryann/difflib"
@@ -279,7 +280,7 @@ func cmdStop(fl Flags) (int, error) {
 	configFlag := fl.String("config")
 	configAdapterFlag := fl.String("adapter")
 
-	adminAddr, err := DetermineAdminAPIAddress(addrFlag, nil, configFlag, configAdapterFlag)
+	adminAddr, err := DetermineAdminAPIAddress(addrFlag, configFlag, configAdapterFlag)
 	if err != nil {
 		return caddy.ExitCodeFailedStartup, fmt.Errorf("couldn't determine admin API address: %v", err)
 	}
@@ -309,7 +310,7 @@ func cmdReload(fl Flags) (int, error) {
 		return caddy.ExitCodeFailedStartup, fmt.Errorf("no config file to load")
 	}
 
-	adminAddr, err := DetermineAdminAPIAddress(addrFlag, config, configFlag, configAdapterFlag)
+	adminAddr, err := DetermineAdminAPIAddress(addrFlag, configFlag, configAdapterFlag)
 	if err != nil {
 		return caddy.ExitCodeFailedStartup, fmt.Errorf("couldn't determine admin API address: %v", err)
 	}
@@ -330,17 +331,30 @@ func cmdReload(fl Flags) (int, error) {
 }
 
 func cmdVersion(_ Flags) (int, error) {
-	_, full := caddy.Version()
-	fmt.Println(full)
+	fmt.Println(CaddyVersion())
 	return caddy.ExitCodeSuccess, nil
 }
 
-func cmdBuildInfo(_ Flags) (int, error) {
+func cmdBuildInfo(fl Flags) (int, error) {
 	bi, ok := debug.ReadBuildInfo()
 	if !ok {
 		return caddy.ExitCodeFailedStartup, fmt.Errorf("no build information")
 	}
-	fmt.Println(bi)
+
+	fmt.Printf("go_version: %s\n", runtime.Version())
+	fmt.Printf("go_os:      %s\n", runtime.GOOS)
+	fmt.Printf("go_arch:    %s\n", runtime.GOARCH)
+	fmt.Printf("path:       %s\n", bi.Path)
+	fmt.Printf("main:       %s %s %s\n", bi.Main.Path, bi.Main.Version, bi.Main.Sum)
+	fmt.Println("dependencies:")
+
+	for _, goMod := range bi.Deps {
+		fmt.Printf("%s %s %s", goMod.Path, goMod.Version, goMod.Sum)
+		if goMod.Replace != nil {
+			fmt.Printf(" => %s %s %s", goMod.Replace.Path, goMod.Replace.Version, goMod.Replace.Sum)
+		}
+		fmt.Println()
+	}
 	return caddy.ExitCodeSuccess, nil
 }
 
@@ -457,7 +471,7 @@ func cmdAdaptConfig(fl Flags) (int, error) {
 			fmt.Errorf("reading input file: %v", err)
 	}
 
-	opts := map[string]any{"filename": adaptCmdInputFlag}
+	opts := map[string]interface{}{"filename": adaptCmdInputFlag}
 
 	adaptedConfig, warnings, err := cfgAdapter.Adapt(input, opts)
 	if err != nil {
@@ -579,6 +593,70 @@ func cmdFmt(fl Flags) (int, error) {
 	return caddy.ExitCodeSuccess, nil
 }
 
+func cmdHelp(fl Flags) (int, error) {
+	const fullDocs = `Full documentation is available at:
+https://caddyserver.com/docs/command-line`
+
+	args := fl.Args()
+	if len(args) == 0 {
+		s := `Caddy is an extensible server platform.
+
+usage:
+  caddy <command> [<args...>]
+
+commands:
+`
+		keys := make([]string, 0, len(commands))
+		for k := range commands {
+			keys = append(keys, k)
+		}
+		sort.Strings(keys)
+		for _, k := range keys {
+			cmd := commands[k]
+			short := strings.TrimSuffix(cmd.Short, ".")
+			s += fmt.Sprintf("  %-15s %s\n", cmd.Name, short)
+		}
+
+		s += "\nUse 'caddy help <command>' for more information about a command.\n"
+		s += "\n" + fullDocs + "\n"
+
+		fmt.Print(s)
+
+		return caddy.ExitCodeSuccess, nil
+	} else if len(args) > 1 {
+		return caddy.ExitCodeFailedStartup, fmt.Errorf("can only give help with one command")
+	}
+
+	subcommand, ok := commands[args[0]]
+	if !ok {
+		return caddy.ExitCodeFailedStartup, fmt.Errorf("unknown command: %s", args[0])
+	}
+
+	helpText := strings.TrimSpace(subcommand.Long)
+	if helpText == "" {
+		helpText = subcommand.Short
+		if !strings.HasSuffix(helpText, ".") {
+			helpText += "."
+		}
+	}
+
+	result := fmt.Sprintf("%s\n\nusage:\n  caddy %s %s\n",
+		helpText,
+		subcommand.Name,
+		strings.TrimSpace(subcommand.Usage),
+	)
+
+	if help := flagHelp(subcommand.Flags); help != "" {
+		result += fmt.Sprintf("\nflags:\n%s", help)
+	}
+
+	result += "\n" + fullDocs + "\n"
+
+	fmt.Print(result)
+
+	return caddy.ExitCodeSuccess, nil
+}
+
 // AdminAPIRequest makes an API request according to the CLI flags given,
 // with the given HTTP method and request URI. If body is non-nil, it will
 // be assumed to be Content-Type application/json. The caller should close
@@ -654,11 +732,10 @@ func AdminAPIRequest(adminAddr, method, uri string, headers http.Header, body io
 
 // DetermineAdminAPIAddress determines which admin API endpoint address should
 // be used based on the inputs. By priority: if `address` is specified, then
-// it is returned; if `config` is specified, then that config will be used for
-// finding the admin address; if `configFile` (and `configAdapter`) are specified,
-// then that config will be loaded to find the admin address; otherwise, the
-// default admin listen address will be returned.
-func DetermineAdminAPIAddress(address string, config []byte, configFile, configAdapter string) (string, error) {
+// it is returned; if `configFile` (and `configAdapter`) are specified, then that
+// config will be loaded to find the admin address; otherwise, the default
+// admin listen address will be returned.
+func DetermineAdminAPIAddress(address, configFile, configAdapter string) (string, error) {
 	// Prefer the address if specified and non-empty
 	if address != "" {
 		return address, nil
@@ -666,29 +743,21 @@ func DetermineAdminAPIAddress(address string, config []byte, configFile, configA
 
 	// Try to load the config from file if specified, with the given adapter name
 	if configFile != "" {
-		var loadedConfigFile string
-		var err error
-
-		// use the provided loaded config if non-empty
-		// otherwise, load it from the specified file/adapter
-		loadedConfig := config
-		if len(loadedConfig) == 0 {
-			// get the config in caddy's native format
-			loadedConfig, loadedConfigFile, err = LoadConfig(configFile, configAdapter)
-			if err != nil {
-				return "", err
-			}
-			if loadedConfigFile == "" {
-				return "", fmt.Errorf("no config file to load; either use --config flag or ensure Caddyfile exists in current directory")
-			}
+		// get the config in caddy's native format
+		config, loadedConfigFile, err := LoadConfig(configFile, configAdapter)
+		if err != nil {
+			return "", err
+		}
+		if loadedConfigFile == "" {
+			return "", fmt.Errorf("no config file to load")
 		}
 
-		// get the address of the admin listener from the config
-		if len(loadedConfig) > 0 {
+		// get the address of the admin listener if set
+		if len(config) > 0 {
 			var tmpStruct struct {
 				Admin caddy.AdminConfig `json:"admin"`
 			}
-			err := json.Unmarshal(loadedConfig, &tmpStruct)
+			err = json.Unmarshal(config, &tmpStruct)
 			if err != nil {
 				return "", fmt.Errorf("unmarshaling admin listener address from config: %v", err)
 			}

cmd/commands.go

@@ -16,14 +16,7 @@ package caddycmd
 
 import (
 	"flag"
-	"fmt"
-	"os"
 	"regexp"
-	"strings"
-
-	"github.com/caddyserver/caddy/v2"
-	"github.com/spf13/cobra"
-	"github.com/spf13/cobra/doc"
 )
 
 // Command represents a subcommand. Name, Func,
@@ -77,6 +70,13 @@ func Commands() map[string]Command {
 var commands = make(map[string]Command)
 
 func init() {
+	RegisterCommand(Command{
+		Name:  "help",
+		Func:  cmdHelp,
+		Usage: "<command>",
+		Short: "Shows help for a Caddy subcommand",
+	})
+
 	RegisterCommand(Command{
 		Name:  "start",
 		Func:  cmdStart,
@@ -137,8 +137,8 @@ The --resume flag will override the --config flag if there is a config auto-
 save file. It is not an error if --resume is used and no autosave file exists.
 
 If --watch is specified, the config file will be loaded automatically after
-changes. ⚠️ This can make unintentional config changes easier; only use this
-option in a local development environment.`,
+changes. ⚠️ This is dangerous in production! Only use this option in a local
+development environment.`,
 		Flags: func() *flag.FlagSet {
 			fs := flag.NewFlagSet("run", flag.ExitOnError)
 			fs.String("config", "", "Configuration file")
@@ -200,19 +200,6 @@ config file; otherwise the default is assumed.`,
 		Name:  "version",
 		Func:  cmdVersion,
 		Short: "Prints the version",
-		Long: `
-Prints the version of this Caddy binary.
-
-Version information must be embedded into the binary at compile-time in
-order for Caddy to display anything useful with this command. If Caddy
-is built from within a version control repository, the Go command will
-embed the revision hash if available. However, if Caddy is built in the
-way specified by our online documentation (or by using xcaddy), more
-detailed version information is printed as given by Go modules.
-
-For more details about the full version string, see the Go module
-documentation: https://go.dev/doc/modules/version-numbers
-`,
 	})
 
 	RegisterCommand(Command{
@@ -239,24 +226,6 @@ documentation: https://go.dev/doc/modules/version-numbers
 		Name:  "environ",
 		Func:  cmdEnviron,
 		Short: "Prints the environment",
-		Long: `
-Prints the environment as seen by this Caddy process.
-
-The environment includes variables set in the system. If your Caddy
-configuration uses environment variables (e.g. "{env.VARIABLE}") then
-this command can be useful for verifying that the variables will have
-the values you expect in your config.
-
-Note that environments may be different depending on how you run Caddy.
-Environments for Caddy instances started by service managers such as
-systemd are often different than the environment inherited from your
-shell or terminal.
-
-You can also print the environment the same time you use "caddy run"
-by adding the "--environ" flag.
-
-Environments may contain sensitive data.
-`,
 	})
 
 	RegisterCommand(Command{
@@ -377,111 +346,16 @@ EXPERIMENTAL: May be changed or removed.
 		}(),
 	})
 
-	RegisterCommand(Command{
-		Name: "manpage",
-		Func: func(fl Flags) (int, error) {
-			dir := strings.TrimSpace(fl.String("directory"))
-			if dir == "" {
-				return caddy.ExitCodeFailedQuit, fmt.Errorf("designated output directory and specified section are required")
-			}
-			if err := os.MkdirAll(dir, 0755); err != nil {
-				return caddy.ExitCodeFailedQuit, err
-			}
-			if err := doc.GenManTree(rootCmd, &doc.GenManHeader{
-				Title:   "Caddy",
-				Section: "8", // https://en.wikipedia.org/wiki/Man_page#Manual_sections
-			}, dir); err != nil {
-				return caddy.ExitCodeFailedQuit, err
-			}
-			return caddy.ExitCodeSuccess, nil
-		},
-		Usage: "--directory <path>",
-		Short: "Generates the manual pages for Caddy commands",
-		Long: `
-Generates the manual pages for Caddy commands into the designated directory
-tagged into section 8 (System Administration).
-
-The manual page files are generated into the directory specified by the
-argument of --directory. If the directory does not exist, it will be created.
-`,
-		Flags: func() *flag.FlagSet {
-			fs := flag.NewFlagSet("manpage", flag.ExitOnError)
-			fs.String("directory", "", "The output directory where the manpages are generated")
-			return fs
-		}(),
-	})
-
-	// source: https://github.com/spf13/cobra/blob/main/shell_completions.md
-	rootCmd.AddCommand(&cobra.Command{
-		Use:   "completion [bash|zsh|fish|powershell]",
-		Short: "Generate completion script",
-		Long: fmt.Sprintf(`To load completions:
-	
-	Bash:
-	
-	  $ source <(%[1]s completion bash)
-	
-	  # To load completions for each session, execute once:
-	  # Linux:
-	  $ %[1]s completion bash > /etc/bash_completion.d/%[1]s
-	  # macOS:
-	  $ %[1]s completion bash > $(brew --prefix)/etc/bash_completion.d/%[1]s
-	
-	Zsh:
-	
-	  # If shell completion is not already enabled in your environment,
-	  # you will need to enable it.  You can execute the following once:
-	
-	  $ echo "autoload -U compinit; compinit" >> ~/.zshrc
-	
-	  # To load completions for each session, execute once:
-	  $ %[1]s completion zsh > "${fpath[1]}/_%[1]s"
-	
-	  # You will need to start a new shell for this setup to take effect.
-	
-	fish:
-	
-	  $ %[1]s completion fish | source
-	
-	  # To load completions for each session, execute once:
-	  $ %[1]s completion fish > ~/.config/fish/completions/%[1]s.fish
-	
-	PowerShell:
-	
-	  PS> %[1]s completion powershell | Out-String | Invoke-Expression
-	
-	  # To load completions for every new session, run:
-	  PS> %[1]s completion powershell > %[1]s.ps1
-	  # and source this file from your PowerShell profile.
-	`, rootCmd.Root().Name()),
-		DisableFlagsInUseLine: true,
-		ValidArgs:             []string{"bash", "zsh", "fish", "powershell"},
-		Args:                  cobra.ExactValidArgs(1),
-		RunE: func(cmd *cobra.Command, args []string) error {
-			switch args[0] {
-			case "bash":
-				return cmd.Root().GenBashCompletion(os.Stdout)
-			case "zsh":
-				return cmd.Root().GenZshCompletion(os.Stdout)
-			case "fish":
-				return cmd.Root().GenFishCompletion(os.Stdout, true)
-			case "powershell":
-				return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
-			default:
-				return fmt.Errorf("unrecognized shell: %s", args[0])
-			}
-		},
-	})
 }
 
 // RegisterCommand registers the command cmd.
 // cmd.Name must be unique and conform to the
 // following format:
 //
-//   - lowercase
-//   - alphanumeric and hyphen characters only
-//   - cannot start or end with a hyphen
-//   - hyphen cannot be adjacent to another hyphen
+//    - lowercase
+//    - alphanumeric and hyphen characters only
+//    - cannot start or end with a hyphen
+//    - hyphen cannot be adjacent to another hyphen
 //
 // This function panics if the name is already registered,
 // if the name does not meet the described format, or if
@@ -504,7 +378,7 @@ func RegisterCommand(cmd Command) {
 	if !commandNameRegex.MatchString(cmd.Name) {
 		panic("invalid command name")
 	}
-	rootCmd.AddCommand(caddyCmdToCoral(cmd))
+	commands[cmd.Name] = cmd
 }
 
 var commandNameRegex = regexp.MustCompile(`^[a-z0-9]$|^([a-z0-9]+-?[a-z0-9]*)+[a-z0-9]$`)

cmd/main.go

@@ -33,37 +33,60 @@ import (
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig"
 	"github.com/caddyserver/certmagic"
-	"github.com/spf13/pflag"
 	"go.uber.org/zap"
 )
 
 func init() {
 	// set a fitting User-Agent for ACME requests
-	version, _ := caddy.Version()
-	cleanModVersion := strings.TrimPrefix(version, "v")
-	ua := "Caddy/" + cleanModVersion
-	if uaEnv, ok := os.LookupEnv("USERAGENT"); ok {
-		ua = uaEnv + " " + ua
-	}
-	certmagic.UserAgent = ua
+	goModule := caddy.GoModule()
+	cleanModVersion := strings.TrimPrefix(goModule.Version, "v")
+	certmagic.UserAgent = "Caddy/" + cleanModVersion
 
 	// by using Caddy, user indicates agreement to CA terms
-	// (very important, as Caddy is often non-interactive
-	// and thus ACME account creation will fail!)
+	// (very important, or ACME account creation will fail!)
 	certmagic.DefaultACME.Agreed = true
 }
 
 // Main implements the main function of the caddy command.
 // Call this if Caddy is to be the main() of your program.
 func Main() {
-	if len(os.Args) == 0 {
+	switch len(os.Args) {
+	case 0:
 		fmt.Printf("[FATAL] no arguments provided by OS; args[0] must be command\n")
 		os.Exit(caddy.ExitCodeFailedStartup)
+	case 1:
+		os.Args = append(os.Args, "help")
+	}
+
+	subcommandName := os.Args[1]
+	subcommand, ok := commands[subcommandName]
+	if !ok {
+		if strings.HasPrefix(os.Args[1], "-") {
+			// user probably forgot to type the subcommand
+			fmt.Println("[ERROR] first argument must be a subcommand; see 'caddy help'")
+		} else {
+			fmt.Printf("[ERROR] '%s' is not a recognized subcommand; see 'caddy help'\n", os.Args[1])
+		}
+		os.Exit(caddy.ExitCodeFailedStartup)
 	}
 
-	if err := rootCmd.Execute(); err != nil {
-		os.Exit(1)
+	fs := subcommand.Flags
+	if fs == nil {
+		fs = flag.NewFlagSet(subcommand.Name, flag.ExitOnError)
 	}
+
+	err := fs.Parse(os.Args[2:])
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(caddy.ExitCodeFailedStartup)
+	}
+
+	exitCode, err := subcommand.Func(Flags{fs})
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%s: %v\n", subcommand.Name, err)
+	}
+
+	os.Exit(exitCode)
 }
 
 // handlePingbackConn reads from conn and ensures it matches
@@ -150,7 +173,7 @@ func LoadConfig(configFile, adapterName string) ([]byte, string, error) {
 
 	// adapt config
 	if cfgAdapter != nil {
-		adaptedConfig, warnings, err := cfgAdapter.Adapt(config, map[string]any{
+		adaptedConfig, warnings, err := cfgAdapter.Adapt(config, map[string]interface{}{
 			"filename": configFile,
 		})
 		if err != nil {
@@ -257,7 +280,7 @@ func watchConfigFile(filename, adapterName string) {
 // Flags wraps a FlagSet so that typed values
 // from flags can be easily retrieved.
 type Flags struct {
-	*pflag.FlagSet
+	*flag.FlagSet
 }
 
 // String returns the string representation of the
@@ -303,6 +326,22 @@ func (f Flags) Duration(name string) time.Duration {
 	return val
 }
 
+// flagHelp returns the help text for fs.
+func flagHelp(fs *flag.FlagSet) string {
+	if fs == nil {
+		return ""
+	}
+
+	// temporarily redirect output
+	out := fs.Output()
+	defer fs.SetOutput(out)
+
+	buf := new(bytes.Buffer)
+	fs.SetOutput(buf)
+	fs.PrintDefaults()
+	return buf.String()
+}
+
 func loadEnvFromFile(envFile string) error {
 	file, err := os.Open(envFile)
 	if err != nil {
@@ -348,11 +387,11 @@ func parseEnvFile(envInput io.Reader) (map[string]string, error) {
 		}
 
 		// split line into key and value
-		before, after, isCut := strings.Cut(line, "=")
-		if !isCut {
+		fields := strings.SplitN(line, "=", 2)
+		if len(fields) != 2 {
 			return nil, fmt.Errorf("can't parse line %d; line should be in KEY=VALUE format", lineNumber)
 		}
-		key, val := before, after
+		key, val := fields[0], fields[1]
 
 		// sometimes keys are prefixed by "export " so file can be sourced in bash; ignore it here
 		key = strings.TrimPrefix(key, "export ")
@@ -369,8 +408,11 @@ func parseEnvFile(envInput io.Reader) (map[string]string, error) {
 		}
 
 		// remove any trailing comment after value
-		if commentStart, _, found := strings.Cut(val, "#"); found {
-			val = strings.TrimRight(commentStart, " \t")
+		if commentStart := strings.Index(val, "#"); commentStart > 0 {
+			before := val[commentStart-1]
+			if before == '\t' || before == ' ' {
+				val = strings.TrimRight(val[:commentStart], " \t")
+			}
 		}
 
 		// quoted value: support newlines
@@ -399,12 +441,11 @@ func parseEnvFile(envInput io.Reader) (map[string]string, error) {
 }
 
 func printEnvironment() {
-	_, version := caddy.Version()
 	fmt.Printf("caddy.HomeDir=%s\n", caddy.HomeDir())
 	fmt.Printf("caddy.AppDataDir=%s\n", caddy.AppDataDir())
 	fmt.Printf("caddy.AppConfigDir=%s\n", caddy.AppConfigDir())
 	fmt.Printf("caddy.ConfigAutosavePath=%s\n", caddy.ConfigAutosavePath)
-	fmt.Printf("caddy.Version=%s\n", version)
+	fmt.Printf("caddy.Version=%s\n", CaddyVersion())
 	fmt.Printf("runtime.GOOS=%s\n", runtime.GOOS)
 	fmt.Printf("runtime.GOARCH=%s\n", runtime.GOARCH)
 	fmt.Printf("runtime.Compiler=%s\n", runtime.Compiler)
@@ -421,15 +462,21 @@ func printEnvironment() {
 	}
 }
 
-// StringSlice is a flag.Value that enables repeated use of a string flag.
-type StringSlice []string
-
-func (ss StringSlice) String() string { return "[" + strings.Join(ss, ", ") + "]" }
-
-func (ss *StringSlice) Set(value string) error {
-	*ss = append(*ss, value)
-	return nil
+// CaddyVersion returns a detailed version string, if available.
+func CaddyVersion() string {
+	goModule := caddy.GoModule()
+	ver := goModule.Version
+	if goModule.Sum != "" {
+		ver += " " + goModule.Sum
+	}
+	if goModule.Replace != nil {
+		ver += " => " + goModule.Replace.Path
+		if goModule.Replace.Version != "" {
+			ver += "@" + goModule.Replace.Version
+		}
+		if goModule.Replace.Sum != "" {
+			ver += " " + goModule.Replace.Sum
+		}
+	}
+	return ver
 }
-
-// Interface guard
-var _ flag.Value = (*StringSlice)(nil)

cmd/packagesfuncs.go

@@ -194,7 +194,7 @@ func getModules() (standard, nonstandard, unknown []moduleInfo, err error) {
 		// can use reflection but we need a non-pointer value (I'm
 		// not sure why), and since New() should return a pointer
 		// value, we need to dereference it first
-		iface := any(modInfo.New())
+		iface := interface{}(modInfo.New())
 		if rv := reflect.ValueOf(iface); rv.Kind() == reflect.Ptr {
 			iface = reflect.New(reflect.TypeOf(iface).Elem()).Elem().Interface()
 		}

cmd/removebinary.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build !windows
+// +build !windows
 
 package caddycmd
 

cmd/removebinary_windows.go

@@ -31,9 +31,6 @@ import (
 func removeCaddyBinary(path string) error {
 	var sI syscall.StartupInfo
 	var pI syscall.ProcessInformation
-	argv, err := syscall.UTF16PtrFromString(filepath.Join(os.Getenv("windir"), "system32", "cmd.exe") + " /C del " + path)
-	if err != nil {
-		return err
-	}
+	argv := syscall.StringToUTF16Ptr(filepath.Join(os.Getenv("windir"), "system32", "cmd.exe") + " /C del " + path)
 	return syscall.CreateProcess(nil, argv, nil, nil, true, 0, nil, nil, &sI, &pI)
 }

context.go

@@ -37,10 +37,9 @@ import (
 // not actually need to do this).
 type Context struct {
 	context.Context
-	moduleInstances map[string][]Module
+	moduleInstances map[string][]interface{}
 	cfg             *Config
 	cleanupFuncs    []func()
-	ancestry        []Module
 }
 
 // NewContext provides a new context derived from the given
@@ -52,7 +51,7 @@ type Context struct {
 // modules which are loaded will be properly unloaded.
 // See standard library context package's documentation.
 func NewContext(ctx Context) (Context, context.CancelFunc) {
-	newCtx := Context{moduleInstances: make(map[string][]Module), cfg: ctx.cfg}
+	newCtx := Context{moduleInstances: make(map[string][]interface{}), cfg: ctx.cfg}
 	c, cancel := context.WithCancel(ctx.Context)
 	wrappedCancel := func() {
 		cancel()
@@ -91,15 +90,15 @@ func (ctx *Context) OnCancel(f func()) {
 // ModuleMap may be used in place of map[string]json.RawMessage. The return value's
 // underlying type mirrors the input field's type:
 //
-//	json.RawMessage              => any
-//	[]json.RawMessage            => []any
-//	[][]json.RawMessage          => [][]any
-//	map[string]json.RawMessage   => map[string]any
-//	[]map[string]json.RawMessage => []map[string]any
+//    json.RawMessage              => interface{}
+//    []json.RawMessage            => []interface{}
+//    [][]json.RawMessage          => [][]interface{}
+//    map[string]json.RawMessage   => map[string]interface{}
+//    []map[string]json.RawMessage => []map[string]interface{}
 //
 // The field must have a "caddy" struct tag in this format:
 //
-//	caddy:"key1=val1 key2=val2"
+//    caddy:"key1=val1 key2=val2"
 //
 // To load modules, a "namespace" key is required. For example, to load modules
 // in the "http.handlers" namespace, you'd put: `namespace=http.handlers` in the
@@ -116,20 +115,20 @@ func (ctx *Context) OnCancel(f func()) {
 // meaning the key containing the module's name that is defined inline with the module
 // itself. You must specify the inline key in a struct tag, along with the namespace:
 //
-//	caddy:"namespace=http.handlers inline_key=handler"
+//    caddy:"namespace=http.handlers inline_key=handler"
 //
 // This will look for a key/value pair like `"handler": "..."` in the json.RawMessage
 // in order to know the module name.
 //
 // To make use of the loaded module(s) (the return value), you will probably want
-// to type-assert each 'any' value(s) to the types that are useful to you
+// to type-assert each interface{} value(s) to the types that are useful to you
 // and store them on the same struct. Storing them on the same struct makes for
 // easy garbage collection when your host module is no longer needed.
 //
 // Loaded modules have already been provisioned and validated. Upon returning
 // successfully, this method clears the json.RawMessage(s) in the field since
 // the raw JSON is no longer needed, and this allows the GC to free up memory.
-func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error) {
+func (ctx Context) LoadModule(structPointer interface{}, fieldName string) (interface{}, error) {
 	val := reflect.ValueOf(structPointer).Elem().FieldByName(fieldName)
 	typ := val.Type()
 
@@ -149,7 +148,7 @@ func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error)
 	}
 	inlineModuleKey := opts["inline_key"]
 
-	var result any
+	var result interface{}
 
 	switch val.Kind() {
 	case reflect.Slice:
@@ -171,7 +170,7 @@ func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error)
 			if inlineModuleKey == "" {
 				panic("unable to determine module name without inline_key because type is not a ModuleMap")
 			}
-			var all []any
+			var all []interface{}
 			for i := 0; i < val.Len(); i++ {
 				val, err := ctx.loadModuleInline(inlineModuleKey, moduleNamespace, val.Index(i).Interface().(json.RawMessage))
 				if err != nil {
@@ -187,10 +186,10 @@ func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error)
 			if inlineModuleKey == "" {
 				panic("unable to determine module name without inline_key because type is not a ModuleMap")
 			}
-			var all [][]any
+			var all [][]interface{}
 			for i := 0; i < val.Len(); i++ {
 				innerVal := val.Index(i)
-				var allInner []any
+				var allInner []interface{}
 				for j := 0; j < innerVal.Len(); j++ {
 					innerInnerVal, err := ctx.loadModuleInline(inlineModuleKey, moduleNamespace, innerVal.Index(j).Interface().(json.RawMessage))
 					if err != nil {
@@ -205,7 +204,7 @@ func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error)
 		} else if isModuleMapType(typ.Elem()) {
 			// val is `[]map[string]json.RawMessage`
 
-			var all []map[string]any
+			var all []map[string]interface{}
 			for i := 0; i < val.Len(); i++ {
 				thisSet, err := ctx.loadModulesFromSomeMap(moduleNamespace, inlineModuleKey, val.Index(i))
 				if err != nil {
@@ -233,10 +232,10 @@ func (ctx Context) LoadModule(structPointer any, fieldName string) (any, error)
 	return result, nil
 }
 
-// loadModulesFromSomeMap loads modules from val, which must be a type of map[string]any.
+// loadModulesFromSomeMap loads modules from val, which must be a type of map[string]interface{}.
 // Depending on inlineModuleKey, it will be interpreted as either a ModuleMap (key is the module
 // name) or as a regular map (key is not the module name, and module name is defined inline).
-func (ctx Context) loadModulesFromSomeMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]any, error) {
+func (ctx Context) loadModulesFromSomeMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]interface{}, error) {
 	// if no inline_key is specified, then val must be a ModuleMap,
 	// where the key is the module name
 	if inlineModuleKey == "" {
@@ -254,8 +253,8 @@ func (ctx Context) loadModulesFromSomeMap(namespace, inlineModuleKey string, val
 // loadModulesFromRegularMap loads modules from val, where val is a map[string]json.RawMessage.
 // Map keys are NOT interpreted as module names, so module names are still expected to appear
 // inline with the objects.
-func (ctx Context) loadModulesFromRegularMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]any, error) {
-	mods := make(map[string]any)
+func (ctx Context) loadModulesFromRegularMap(namespace, inlineModuleKey string, val reflect.Value) (map[string]interface{}, error) {
+	mods := make(map[string]interface{})
 	iter := val.MapRange()
 	for iter.Next() {
 		k := iter.Key()
@@ -269,10 +268,10 @@ func (ctx Context) loadModulesFromRegularMap(namespace, inlineModuleKey string,
 	return mods, nil
 }
 
-// loadModuleMap loads modules from a ModuleMap, i.e. map[string]any, where the key is the
+// loadModuleMap loads modules from a ModuleMap, i.e. map[string]interface{}, where the key is the
 // module name. With a module map, module names do not need to be defined inline with their values.
-func (ctx Context) loadModuleMap(namespace string, val reflect.Value) (map[string]any, error) {
-	all := make(map[string]any)
+func (ctx Context) loadModuleMap(namespace string, val reflect.Value) (map[string]interface{}, error) {
+	all := make(map[string]interface{})
 	iter := val.MapRange()
 	for iter.Next() {
 		k := iter.Key().Interface().(string)
@@ -300,19 +299,19 @@ func (ctx Context) loadModuleMap(namespace string, val reflect.Value) (map[strin
 // directly by most modules. However, this method is useful when
 // dynamically loading/unloading modules in their own context,
 // like from embedded scripts, etc.
-func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error) {
+func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (interface{}, error) {
 	modulesMu.RLock()
-	modInfo, ok := modules[id]
+	mod, ok := modules[id]
 	modulesMu.RUnlock()
 	if !ok {
 		return nil, fmt.Errorf("unknown module: %s", id)
 	}
 
-	if modInfo.New == nil {
-		return nil, fmt.Errorf("module '%s' has no constructor", modInfo.ID)
+	if mod.New == nil {
+		return nil, fmt.Errorf("module '%s' has no constructor", mod.ID)
 	}
 
-	val := modInfo.New()
+	val := mod.New().(interface{})
 
 	// value must be a pointer for unmarshaling into concrete type, even if
 	// the module's concrete type is a slice or map; New() *should* return
@@ -328,7 +327,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error
 	if len(rawMsg) > 0 {
 		err := strictUnmarshalJSON(rawMsg, &val)
 		if err != nil {
-			return nil, fmt.Errorf("decoding module config: %s: %v", modInfo, err)
+			return nil, fmt.Errorf("decoding module config: %s: %v", mod, err)
 		}
 	}
 
@@ -341,8 +340,6 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error
 		return nil, fmt.Errorf("module value cannot be null")
 	}
 
-	ctx.ancestry = append(ctx.ancestry, val)
-
 	if prov, ok := val.(Provisioner); ok {
 		err := prov.Provision(ctx)
 		if err != nil {
@@ -354,7 +351,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error
 					err = fmt.Errorf("%v; additionally, cleanup: %v", err, err2)
 				}
 			}
-			return nil, fmt.Errorf("provision %s: %v", modInfo, err)
+			return nil, fmt.Errorf("provision %s: %v", mod, err)
 		}
 	}
 
@@ -368,7 +365,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error
 					err = fmt.Errorf("%v; additionally, cleanup: %v", err, err2)
 				}
 			}
-			return nil, fmt.Errorf("%s: invalid configuration: %v", modInfo, err)
+			return nil, fmt.Errorf("%s: invalid configuration: %v", mod, err)
 		}
 	}
 
@@ -378,7 +375,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error
 }
 
 // loadModuleInline loads a module from a JSON raw message which decodes to
-// a map[string]any, where one of the object keys is moduleNameKey
+// a map[string]interface{}, where one of the object keys is moduleNameKey
 // and the corresponding value is the module name (as a string) which can
 // be found in the given scope. In other words, the module name is declared
 // in-line with the module itself.
@@ -388,7 +385,7 @@ func (ctx Context) LoadModuleByID(id string, rawMsg json.RawMessage) (any, error
 // multiple instances in the map or it appears in an array (where there are
 // no custom keys). In other words, the key containing the module name is
 // treated special/separate from all the other keys in the object.
-func (ctx Context) loadModuleInline(moduleNameKey, moduleScope string, raw json.RawMessage) (any, error) {
+func (ctx Context) loadModuleInline(moduleNameKey, moduleScope string, raw json.RawMessage) (interface{}, error) {
 	moduleName, raw, err := getModuleNameInline(moduleNameKey, raw)
 	if err != nil {
 		return nil, err
@@ -410,7 +407,7 @@ func (ctx Context) loadModuleInline(moduleNameKey, moduleScope string, raw json.
 // called during the Provision/Validate phase to reference a
 // module's own host app (since the parent app module is still
 // in the process of being provisioned, it is not yet ready).
-func (ctx Context) App(name string) (any, error) {
+func (ctx Context) App(name string) (interface{}, error) {
 	if app, ok := ctx.cfg.apps[name]; ok {
 		return app, nil
 	}
@@ -442,27 +439,8 @@ func (ctx Context) Storage() certmagic.Storage {
 	return ctx.cfg.storage
 }
 
-// Logger returns a logger that is intended for use by the most
-// recent module associated with the context. Callers should not
-// pass in any arguments unless they want to associate with a
-// different module; it panics if more than 1 value is passed in.
-//
-// Originally, this method's signature was `Logger(mod Module)`,
-// requiring that an instance of a Caddy module be passsed in.
-// However, that is no longer necessary, as the closest module
-// most recently associated with the context will be automatically
-// assumed. To prevent a sudden breaking change, this method's
-// signature has been changed to be variadic, but we may remove
-// the parameter altogether in the future. Callers should not
-// pass in any argument. If there is valid need to specify a
-// different module, please open an issue to discuss.
-//
-// PARTIALLY DEPRECATED: The Logger(module) form is deprecated and
-// may be removed in the future. Do not pass in any arguments.
-func (ctx Context) Logger(module ...Module) *zap.Logger {
-	if len(module) > 1 {
-		panic("more than 1 module passed in")
-	}
+// Logger returns a logger that can be used by mod.
+func (ctx Context) Logger(mod Module) *zap.Logger {
 	if ctx.cfg == nil {
 		// often the case in tests; just use a dev logger
 		l, err := zap.NewDevelopment()
@@ -471,26 +449,5 @@ func (ctx Context) Logger(module ...Module) *zap.Logger {
 		}
 		return l
 	}
-	mod := ctx.Module()
-	if len(module) > 0 {
-		mod = module[0]
-	}
 	return ctx.cfg.Logging.Logger(mod)
 }
-
-// Modules returns the lineage of modules that this context provisioned,
-// with the most recent/current module being last in the list.
-func (ctx Context) Modules() []Module {
-	mods := make([]Module, len(ctx.ancestry))
-	copy(mods, ctx.ancestry)
-	return mods
-}
-
-// Module returns the current module, or the most recent one
-// provisioned by the context.
-func (ctx Context) Module() Module {
-	if len(ctx.ancestry) == 0 {
-		return nil
-	}
-	return ctx.ancestry[len(ctx.ancestry)-1]
-}

context_test.go

@@ -71,13 +71,13 @@ func ExampleContext_LoadModule_array() {
 		},
 	}
 
-	// since our input is []json.RawMessage, the output will be []any
+	// since our input is []json.RawMessage, the output will be []interface{}
 	mods, err := ctx.LoadModule(myStruct, "GuestModulesRaw")
 	if err != nil {
 		// you'd want to actually handle the error here
 		// return fmt.Errorf("loading guest modules: %v", err)
 	}
-	for _, mod := range mods.([]any) {
+	for _, mod := range mods.([]interface{}) {
 		myStruct.guestModules = append(myStruct.guestModules, mod.(io.Writer))
 	}
 
@@ -104,13 +104,13 @@ func ExampleContext_LoadModule_map() {
 		},
 	}
 
-	// since our input is map[string]json.RawMessage, the output will be map[string]any
+	// since our input is map[string]json.RawMessage, the output will be map[string]interface{}
 	mods, err := ctx.LoadModule(myStruct, "GuestModulesRaw")
 	if err != nil {
 		// you'd want to actually handle the error here
 		// return fmt.Errorf("loading guest modules: %v", err)
 	}
-	for modName, mod := range mods.(map[string]any) {
+	for modName, mod := range mods.(map[string]interface{}) {
 		myStruct.guestModules[modName] = mod.(io.Writer)
 	}
 

duration_fuzz.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build gofuzz
+// +build gofuzz
 
 package caddy
 

go.mod

@@ -1,72 +1,66 @@
 module github.com/caddyserver/caddy/v2
 
-go 1.18
+go 1.17
 
 require (
-	github.com/BurntSushi/toml v1.2.0
+	github.com/BurntSushi/toml v1.1.0
 	github.com/Masterminds/sprig/v3 v3.2.2
 	github.com/alecthomas/chroma v0.10.0
 	github.com/aryann/difflib v0.0.0-20210328193216-ff5ff6dc229b
-	github.com/caddyserver/certmagic v0.17.1
+	github.com/caddyserver/certmagic v0.16.1
 	github.com/dustin/go-humanize v1.0.1-0.20200219035652-afde56e7acac
 	github.com/go-chi/chi v4.1.2+incompatible
-	github.com/google/cel-go v0.12.4
+	github.com/google/cel-go v0.7.3
 	github.com/google/uuid v1.3.0
-	github.com/klauspost/compress v1.15.9
-	github.com/klauspost/cpuid/v2 v2.1.0
-	github.com/lucas-clemente/quic-go v0.28.2-0.20220813150001-9957668d4301
-	github.com/mholt/acmez v1.0.4
-	github.com/prometheus/client_golang v1.12.2
-	github.com/smallstep/certificates v0.21.0
-	github.com/smallstep/cli v0.21.0
+	github.com/klauspost/compress v1.15.4
+	github.com/klauspost/cpuid/v2 v2.0.12
+	github.com/lucas-clemente/quic-go v0.27.1
+	github.com/mholt/acmez v1.0.2
+	github.com/prometheus/client_golang v1.12.1
+	github.com/smallstep/certificates v0.19.0
+	github.com/smallstep/cli v0.18.0
 	github.com/smallstep/nosql v0.4.0
-	github.com/smallstep/truststore v0.12.0
-	github.com/spf13/cobra v1.1.3
-	github.com/spf13/pflag v1.0.5
+	github.com/smallstep/truststore v0.11.0
 	github.com/tailscale/tscert v0.0.0-20220316030059-54bbcb9f74e2
-	github.com/yuin/goldmark v1.4.13
+	github.com/yuin/goldmark v1.4.12
 	github.com/yuin/goldmark-highlighting v0.0.0-20220208100518-594be1970594
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.34.0
-	go.opentelemetry.io/otel v1.9.0
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.29.0
+	go.opentelemetry.io/otel v1.4.0
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.4.0
 	go.opentelemetry.io/otel/sdk v1.4.0
 	go.uber.org/zap v1.21.0
-	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa
-	golang.org/x/net v0.0.0-20220812165438-1d4ff48094d1
+	golang.org/x/crypto v0.0.0-20220210151621-f4118a5b28e2
+	golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
-	google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21
+	google.golang.org/genproto v0.0.0-20220222213610-43724f9ea8cf
+	google.golang.org/protobuf v1.27.1
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
-require (
-	github.com/golang/mock v1.6.0 // indirect
-	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
-)
-
 require (
 	filippo.io/edwards25519 v1.0.0-rc.1 // indirect
 	github.com/AndreasBriese/bbloom v0.0.0-20190825152654-46b345b51c96 // indirect
 	github.com/Masterminds/goutils v1.1.1 // indirect
 	github.com/Masterminds/semver/v3 v3.1.1 // indirect
-	github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220418222510-f25a4f6275ed // indirect
+	github.com/antlr/antlr4 v0.0.0-20200503195918-621b933c7a7f // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.1.2 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/cheekybits/genny v1.0.0 // indirect
 	github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e // indirect
-	github.com/cpuguy83/go-md2man/v2 v2.0.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
 	github.com/dgraph-io/badger v1.6.2 // indirect
 	github.com/dgraph-io/badger/v2 v2.2007.4 // indirect
 	github.com/dgraph-io/ristretto v0.0.4-0.20200906165740-41ebdbffecfd // indirect
 	github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
 	github.com/dlclark/regexp2 v1.4.0 // indirect
-	github.com/felixge/httpsnoop v1.0.3 // indirect
+	github.com/felixge/httpsnoop v1.0.2 // indirect
 	github.com/fsnotify/fsnotify v1.5.1 // indirect
 	github.com/go-kit/kit v0.10.0 // indirect
 	github.com/go-logfmt/logfmt v0.5.0 // indirect
-	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-logr/logr v1.2.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-sql-driver/mysql v1.6.0 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
@@ -75,7 +69,6 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
 	github.com/jackc/pgconn v1.10.1 // indirect
 	github.com/jackc/pgio v1.0.0 // indirect
@@ -87,14 +80,15 @@ require (
 	github.com/libdns/libdns v0.2.1 // indirect
 	github.com/manifoldco/promptui v0.9.0 // indirect
 	github.com/marten-seemann/qpack v0.2.1 // indirect
-	github.com/marten-seemann/qtls-go1-18 v0.1.2 // indirect
-	github.com/marten-seemann/qtls-go1-19 v0.1.0 // indirect
+	github.com/marten-seemann/qtls-go1-16 v0.1.5 // indirect
+	github.com/marten-seemann/qtls-go1-17 v0.1.1 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/mattn/go-isatty v0.0.13 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
 	github.com/micromdm/scep/v2 v2.1.0 // indirect
-	github.com/miekg/dns v1.1.50 // indirect
+	github.com/miekg/dns v1.1.46 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/go-ps v1.0.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
@@ -105,7 +99,7 @@ require (
 	github.com/prometheus/common v0.32.1 // indirect
 	github.com/prometheus/procfs v0.7.3 // indirect
 	github.com/rs/xid v1.2.1 // indirect
-	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/russross/blackfriday/v2 v2.0.1 // indirect
 	github.com/shopspring/decimal v1.2.0 // indirect
 	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.8.1 // indirect
@@ -117,21 +111,21 @@ require (
 	go.mozilla.org/pkcs7 v0.0.0-20210826202110-33d05740a352 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.4.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.4.0 // indirect
-	go.opentelemetry.io/otel/metric v0.31.0 // indirect
-	go.opentelemetry.io/otel/trace v1.9.0 // indirect
+	go.opentelemetry.io/otel/internal/metric v0.27.0 // indirect
+	go.opentelemetry.io/otel/metric v0.27.0 // indirect
+	go.opentelemetry.io/otel/trace v1.4.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.12.0 // indirect
-	go.step.sm/cli-utils v0.7.3 // indirect
-	go.step.sm/crypto v0.16.2 // indirect
-	go.step.sm/linkedca v0.16.1 // indirect
+	go.step.sm/cli-utils v0.7.0 // indirect
+	go.step.sm/crypto v0.16.1 // indirect
+	go.step.sm/linkedca v0.15.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 // indirect
-	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10
+	golang.org/x/mod v0.4.2 // indirect
+	golang.org/x/sys v0.0.0-20220209214540-3681064d5158 // indirect
 	golang.org/x/text v0.3.8-0.20211004125949-5bd84dd9b33b // indirect
-	golang.org/x/tools v0.1.10 // indirect
+	golang.org/x/tools v0.1.7 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/grpc v1.46.0 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
+	google.golang.org/grpc v1.44.0 // indirect
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 	howett.net/plist v1.0.0 // indirect

listen.go

@@ -1,172 +0,0 @@
-//go:build !linux
-
-package caddy
-
-import (
-	"fmt"
-	"net"
-	"sync"
-	"sync/atomic"
-	"time"
-
-	"go.uber.org/zap"
-)
-
-func ListenTimeout(network, addr string, keepAlivePeriod time.Duration) (net.Listener, error) {
-	// check to see if plugin provides listener
-	if ln, err := getListenerFromPlugin(network, addr); err != nil || ln != nil {
-		return ln, err
-	}
-
-	lnKey := listenerKey(network, addr)
-
-	sharedLn, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
-		ln, err := net.Listen(network, addr)
-		if err != nil {
-			// https://github.com/caddyserver/caddy/pull/4534
-			if isUnixNetwork(network) && isListenBindAddressAlreadyInUseError(err) {
-				return nil, fmt.Errorf("%w: this can happen if Caddy was forcefully killed", err)
-			}
-			return nil, err
-		}
-		return &sharedListener{Listener: ln, key: lnKey}, nil
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return &fakeCloseListener{sharedListener: sharedLn.(*sharedListener), keepAlivePeriod: keepAlivePeriod}, nil
-}
-
-// fakeCloseListener is a private wrapper over a listener that
-// is shared. The state of fakeCloseListener is not shared.
-// This allows one user of a socket to "close" the listener
-// while in reality the socket stays open for other users of
-// the listener. In this way, servers become hot-swappable
-// while the listener remains running. Listeners should be
-// re-wrapped in a new fakeCloseListener each time the listener
-// is reused. This type is atomic and values must not be copied.
-type fakeCloseListener struct {
-	closed          int32 // accessed atomically; belongs to this struct only
-	*sharedListener       // embedded, so we also become a net.Listener
-	keepAlivePeriod time.Duration
-}
-
-type canSetKeepAlive interface {
-	SetKeepAlivePeriod(d time.Duration) error
-	SetKeepAlive(bool) error
-}
-
-func (fcl *fakeCloseListener) Accept() (net.Conn, error) {
-	// if the listener is already "closed", return error
-	if atomic.LoadInt32(&fcl.closed) == 1 {
-		return nil, fakeClosedErr(fcl)
-	}
-
-	// call underlying accept
-	conn, err := fcl.sharedListener.Accept()
-	if err == nil {
-		// if 0, do nothing, Go's default is already set
-		// and if the connection allows setting KeepAlive, set it
-		if tconn, ok := conn.(canSetKeepAlive); ok && fcl.keepAlivePeriod != 0 {
-			if fcl.keepAlivePeriod > 0 {
-				err = tconn.SetKeepAlivePeriod(fcl.keepAlivePeriod)
-			} else { // negative
-				err = tconn.SetKeepAlive(false)
-			}
-			if err != nil {
-				Log().With(zap.String("server", fcl.sharedListener.key)).Warn("unable to set keepalive for new connection:", zap.Error(err))
-			}
-		}
-		return conn, nil
-	}
-
-	// since Accept() returned an error, it may be because our reference to
-	// the listener (this fakeCloseListener) may have been closed, i.e. the
-	// server is shutting down; in that case, we need to clear the deadline
-	// that we set when Close() was called, and return a non-temporary and
-	// non-timeout error value to the caller, masking the "true" error, so
-	// that server loops / goroutines won't retry, linger, and leak
-	if atomic.LoadInt32(&fcl.closed) == 1 {
-		// we dereference the sharedListener explicitly even though it's embedded
-		// so that it's clear in the code that side-effects are shared with other
-		// users of this listener, not just our own reference to it; we also don't
-		// do anything with the error because all we could do is log it, but we
-		// expliclty assign it to nothing so we don't forget it's there if needed
-		_ = fcl.sharedListener.clearDeadline()
-
-		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
-			return nil, fakeClosedErr(fcl)
-		}
-	}
-
-	return nil, err
-}
-
-// Close stops accepting new connections without closing the
-// underlying listener. The underlying listener is only closed
-// if the caller is the last known user of the socket.
-func (fcl *fakeCloseListener) Close() error {
-	if atomic.CompareAndSwapInt32(&fcl.closed, 0, 1) {
-		// There are two ways I know of to get an Accept()
-		// function to return to the server loop that called
-		// it: close the listener, or set a deadline in the
-		// past. Obviously, we can't close the socket yet
-		// since others may be using it (hence this whole
-		// file). But we can set the deadline in the past,
-		// and this is kind of cheating, but it works, and
-		// it apparently even works on Windows.
-		_ = fcl.sharedListener.setDeadline()
-		_, _ = listenerPool.Delete(fcl.sharedListener.key)
-	}
-	return nil
-}
-
-// sharedListener is a wrapper over an underlying listener. The listener
-// and the other fields on the struct are shared state that is synchronized,
-// so sharedListener structs must never be copied (always use a pointer).
-type sharedListener struct {
-	net.Listener
-	key        string // uniquely identifies this listener
-	deadline   bool   // whether a deadline is currently set
-	deadlineMu sync.Mutex
-}
-
-func (sl *sharedListener) clearDeadline() error {
-	var err error
-	sl.deadlineMu.Lock()
-	if sl.deadline {
-		switch ln := sl.Listener.(type) {
-		case *net.TCPListener:
-			err = ln.SetDeadline(time.Time{})
-		case *net.UnixListener:
-			err = ln.SetDeadline(time.Time{})
-		}
-		sl.deadline = false
-	}
-	sl.deadlineMu.Unlock()
-	return err
-}
-
-func (sl *sharedListener) setDeadline() error {
-	timeInPast := time.Now().Add(-1 * time.Minute)
-	var err error
-	sl.deadlineMu.Lock()
-	if !sl.deadline {
-		switch ln := sl.Listener.(type) {
-		case *net.TCPListener:
-			err = ln.SetDeadline(timeInPast)
-		case *net.UnixListener:
-			err = ln.SetDeadline(timeInPast)
-		}
-		sl.deadline = true
-	}
-	sl.deadlineMu.Unlock()
-	return err
-}
-
-// Destruct is called by the UsagePool when the listener is
-// finally not being used anymore. It closes the socket.
-func (sl *sharedListener) Destruct() error {
-	return sl.Listener.Close()
-}

listen_linux.go

@@ -1,34 +0,0 @@
-package caddy
-
-import (
-	"context"
-	"net"
-	"syscall"
-	"time"
-
-	"go.uber.org/zap"
-	"golang.org/x/sys/unix"
-)
-
-// ListenTimeout is the same as Listen, but with a configurable keep-alive timeout duration.
-func ListenTimeout(network, addr string, keepalivePeriod time.Duration) (net.Listener, error) {
-	// check to see if plugin provides listener
-	if ln, err := getListenerFromPlugin(network, addr); err != nil || ln != nil {
-		return ln, err
-	}
-
-	config := &net.ListenConfig{Control: reusePort, KeepAlive: keepalivePeriod}
-	return config.Listen(context.Background(), network, addr)
-}
-
-func reusePort(network, address string, conn syscall.RawConn) error {
-	return conn.Control(func(descriptor uintptr) {
-		if err := unix.SetsockoptInt(int(descriptor), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {
-			Log().Error("setting SO_REUSEPORT",
-				zap.String("network", network),
-				zap.String("address", address),
-				zap.Uintptr("descriptor", descriptor),
-				zap.Error(err))
-		}
-	})
-}

listeners.go

@@ -20,16 +20,16 @@ import (
 	"errors"
 	"fmt"
 	"net"
-	"net/netip"
 	"os"
 	"strconv"
 	"strings"
+	"sync"
 	"sync/atomic"
 	"syscall"
+	"time"
 
 	"github.com/lucas-clemente/quic-go"
 	"github.com/lucas-clemente/quic-go/http3"
-	"go.uber.org/zap"
 )
 
 // Listen is like net.Listen, except Caddy's listeners can overlap
@@ -41,30 +41,31 @@ import (
 // the socket have been finished. Always be sure to close listeners
 // when you are done with them, just like normal listeners.
 func Listen(network, addr string) (net.Listener, error) {
-	// a 0 timeout means Go uses its default
-	return ListenTimeout(network, addr, 0)
-}
+	lnKey := network + "/" + addr
 
-// getListenerFromPlugin returns a listener on the given network and address
-// if a plugin has registered the network name. It may return (nil, nil) if
-// no plugin can provide a listener.
-func getListenerFromPlugin(network, addr string) (net.Listener, error) {
-	network = strings.TrimSpace(strings.ToLower(network))
-
-	// get listener from plugin if network type is registered
-	if getListener, ok := networkTypes[network]; ok {
-		Log().Debug("getting listener from plugin", zap.String("network", network))
-		return getListener(network, addr)
+	sharedLn, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
+		ln, err := net.Listen(network, addr)
+		if err != nil {
+			// https://github.com/caddyserver/caddy/pull/4534
+			if isUnixNetwork(network) && isListenBindAddressAlreadyInUseError(err) {
+				return nil, fmt.Errorf("%w: this can happen if Caddy was forcefully killed", err)
+			}
+			return nil, err
+		}
+		return &sharedListener{Listener: ln, key: lnKey}, nil
+	})
+	if err != nil {
+		return nil, err
 	}
 
-	return nil, nil
+	return &fakeCloseListener{sharedListener: sharedLn.(*sharedListener)}, nil
 }
 
 // ListenPacket returns a net.PacketConn suitable for use in a Caddy module.
 // It is like Listen except for PacketConns.
 // Always be sure to close the PacketConn when you are done.
 func ListenPacket(network, addr string) (net.PacketConn, error) {
-	lnKey := listenerKey(network, addr)
+	lnKey := network + "/" + addr
 
 	sharedPc, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
 		pc, err := net.ListenPacket(network, addr)
@@ -87,45 +88,88 @@ func ListenPacket(network, addr string) (net.PacketConn, error) {
 // ListenQUIC returns a quic.EarlyListener suitable for use in a Caddy module.
 // Note that the context passed to Accept is currently ignored, so using
 // a context other than context.Background is meaningless.
-// This API is EXPERIMENTAL and may change.
-func ListenQUIC(addr string, tlsConf *tls.Config, activeRequests *int64) (quic.EarlyListener, error) {
-	lnKey := listenerKey("udp", addr)
+func ListenQUIC(addr string, tlsConf *tls.Config) (quic.EarlyListener, error) {
+	lnKey := "quic/" + addr
 
 	sharedEl, _, err := listenerPool.LoadOrNew(lnKey, func() (Destructor, error) {
-		el, err := quic.ListenAddrEarly(addr, http3.ConfigureTLSConfig(tlsConf), &quic.Config{
-			RequireAddressValidation: func(clientAddr net.Addr) bool {
-				var highLoad bool
-				if activeRequests != nil {
-					highLoad = atomic.LoadInt64(activeRequests) > 1000 // TODO: make tunable?
-				}
-				return highLoad
-			},
-		})
+		el, err := quic.ListenAddrEarly(addr, http3.ConfigureTLSConfig(tlsConf), &quic.Config{})
 		if err != nil {
 			return nil, err
 		}
 		return &sharedQuicListener{EarlyListener: el, key: lnKey}, nil
 	})
-	if err != nil {
-		return nil, err
-	}
 
 	ctx, cancel := context.WithCancel(context.Background())
 	return &fakeCloseQuicListener{
 		sharedQuicListener: sharedEl.(*sharedQuicListener),
-		context:            ctx,
-		contextCancel:      cancel,
-	}, nil
+		context:            ctx, contextCancel: cancel,
+	}, err
 }
 
-// ListenerUsage returns the current usage count of the given listener address.
-func ListenerUsage(network, addr string) int {
-	count, _ := listenerPool.References(listenerKey(network, addr))
-	return count
+// fakeCloseListener is a private wrapper over a listener that
+// is shared. The state of fakeCloseListener is not shared.
+// This allows one user of a socket to "close" the listener
+// while in reality the socket stays open for other users of
+// the listener. In this way, servers become hot-swappable
+// while the listener remains running. Listeners should be
+// re-wrapped in a new fakeCloseListener each time the listener
+// is reused. This type is atomic and values must not be copied.
+type fakeCloseListener struct {
+	closed          int32 // accessed atomically; belongs to this struct only
+	*sharedListener       // embedded, so we also become a net.Listener
 }
 
-func listenerKey(network, addr string) string {
-	return network + "/" + addr
+func (fcl *fakeCloseListener) Accept() (net.Conn, error) {
+	// if the listener is already "closed", return error
+	if atomic.LoadInt32(&fcl.closed) == 1 {
+		return nil, fakeClosedErr(fcl)
+	}
+
+	// call underlying accept
+	conn, err := fcl.sharedListener.Accept()
+	if err == nil {
+		return conn, nil
+	}
+
+	// since Accept() returned an error, it may be because our reference to
+	// the listener (this fakeCloseListener) may have been closed, i.e. the
+	// server is shutting down; in that case, we need to clear the deadline
+	// that we set when Close() was called, and return a non-temporary and
+	// non-timeout error value to the caller, masking the "true" error, so
+	// that server loops / goroutines won't retry, linger, and leak
+	if atomic.LoadInt32(&fcl.closed) == 1 {
+		// we dereference the sharedListener explicitly even though it's embedded
+		// so that it's clear in the code that side-effects are shared with other
+		// users of this listener, not just our own reference to it; we also don't
+		// do anything with the error because all we could do is log it, but we
+		// expliclty assign it to nothing so we don't forget it's there if needed
+		_ = fcl.sharedListener.clearDeadline()
+
+		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
+			return nil, fakeClosedErr(fcl)
+		}
+	}
+
+	return nil, err
+}
+
+// Close stops accepting new connections without closing the
+// underlying listener. The underlying listener is only closed
+// if the caller is the last known user of the socket.
+func (fcl *fakeCloseListener) Close() error {
+	if atomic.CompareAndSwapInt32(&fcl.closed, 0, 1) {
+		// There are two ways I know of to get an Accept()
+		// function to return to the server loop that called
+		// it: close the listener, or set a deadline in the
+		// past. Obviously, we can't close the socket yet
+		// since others may be using it (hence this whole
+		// file). But we can set the deadline in the past,
+		// and this is kind of cheating, but it works, and
+		// it apparently even works on Windows.
+		_ = fcl.sharedListener.setDeadline()
+		_, _ = listenerPool.Delete(fcl.sharedListener.key)
+	}
+	return nil
 }
 
 type fakeCloseQuicListener struct {
@@ -211,6 +255,55 @@ func (fcpc fakeClosePacketConn) SyscallConn() (syscall.RawConn, error) {
 	return nil, fmt.Errorf("SyscallConn() not implemented for %T", fcpc.PacketConn)
 }
 
+// sharedListener is a wrapper over an underlying listener. The listener
+// and the other fields on the struct are shared state that is synchronized,
+// so sharedListener structs must never be copied (always use a pointer).
+type sharedListener struct {
+	net.Listener
+	key        string // uniquely identifies this listener
+	deadline   bool   // whether a deadline is currently set
+	deadlineMu sync.Mutex
+}
+
+func (sl *sharedListener) clearDeadline() error {
+	var err error
+	sl.deadlineMu.Lock()
+	if sl.deadline {
+		switch ln := sl.Listener.(type) {
+		case *net.TCPListener:
+			err = ln.SetDeadline(time.Time{})
+		case *net.UnixListener:
+			err = ln.SetDeadline(time.Time{})
+		}
+		sl.deadline = false
+	}
+	sl.deadlineMu.Unlock()
+	return err
+}
+
+func (sl *sharedListener) setDeadline() error {
+	timeInPast := time.Now().Add(-1 * time.Minute)
+	var err error
+	sl.deadlineMu.Lock()
+	if !sl.deadline {
+		switch ln := sl.Listener.(type) {
+		case *net.TCPListener:
+			err = ln.SetDeadline(timeInPast)
+		case *net.UnixListener:
+			err = ln.SetDeadline(timeInPast)
+		}
+		sl.deadline = true
+	}
+	sl.deadlineMu.Unlock()
+	return err
+}
+
+// Destruct is called by the UsagePool when the listener is
+// finally not being used anymore. It closes the socket.
+func (sl *sharedListener) Destruct() error {
+	return sl.Listener.Close()
+}
+
 // sharedQuicListener is like sharedListener, but for quic.EarlyListeners.
 type sharedQuicListener struct {
 	quic.EarlyListener
@@ -260,25 +353,11 @@ func (na NetworkAddress) JoinHostPort(offset uint) string {
 	return net.JoinHostPort(na.Host, strconv.Itoa(int(na.StartPort+offset)))
 }
 
-func (na NetworkAddress) Expand() []NetworkAddress {
-	size := na.PortRangeSize()
-	addrs := make([]NetworkAddress, size)
-	for portOffset := uint(0); portOffset < size; portOffset++ {
-		na2 := na
-		na2.StartPort, na2.EndPort = na.StartPort+portOffset, na.StartPort+portOffset
-		addrs[portOffset] = na2
-	}
-	return addrs
-}
-
 // PortRangeSize returns how many ports are in
 // pa's port range. Port ranges are inclusive,
 // so the size is the difference of start and
 // end ports plus one.
 func (na NetworkAddress) PortRangeSize() uint {
-	if na.EndPort < na.StartPort {
-		return 0
-	}
 	return (na.EndPort - na.StartPort) + 1
 }
 
@@ -289,7 +368,7 @@ func (na NetworkAddress) isLoopback() bool {
 	if na.Host == "localhost" {
 		return true
 	}
-	if ip, err := netip.ParseAddr(na.Host); err == nil {
+	if ip := net.ParseIP(na.Host); ip != nil {
 		return ip.IsLoopback()
 	}
 	return false
@@ -299,7 +378,7 @@ func (na NetworkAddress) isWildcardInterface() bool {
 	if na.Host == "" {
 		return true
 	}
-	if ip, err := netip.ParseAddr(na.Host); err == nil {
+	if ip := net.ParseIP(na.Host); ip != nil {
 		return ip.IsUnspecified()
 	}
 	return false
@@ -312,13 +391,10 @@ func (na NetworkAddress) port() string {
 	return fmt.Sprintf("%d-%d", na.StartPort, na.EndPort)
 }
 
-// String reconstructs the address string for human display.
-// The output can be parsed by ParseNetworkAddress(). If the
-// address is a unix socket, any non-zero port will be dropped.
+// String reconstructs the address string to the form expected
+// by ParseNetworkAddress(). If the address is a unix socket,
+// any non-zero port will be dropped.
 func (na NetworkAddress) String() string {
-	if na.Network == "tcp" && (na.Host != "" || na.port() != "") {
-		na.Network = "" // omit default network value for brevity
-	}
 	return JoinNetworkAddress(na.Network, na.Host, na.port())
 }
 
@@ -351,38 +427,36 @@ func isListenBindAddressAlreadyInUseError(err error) bool {
 func ParseNetworkAddress(addr string) (NetworkAddress, error) {
 	var host, port string
 	network, host, port, err := SplitNetworkAddress(addr)
-	if err != nil {
-		return NetworkAddress{}, err
-	}
 	if network == "" {
 		network = "tcp"
 	}
+	if err != nil {
+		return NetworkAddress{}, err
+	}
 	if isUnixNetwork(network) {
 		return NetworkAddress{
 			Network: network,
 			Host:    host,
 		}, nil
 	}
+	ports := strings.SplitN(port, "-", 2)
+	if len(ports) == 1 {
+		ports = append(ports, ports[0])
+	}
 	var start, end uint64
-	if port != "" {
-		before, after, found := strings.Cut(port, "-")
-		if !found {
-			after = before
-		}
-		start, err = strconv.ParseUint(before, 10, 16)
-		if err != nil {
-			return NetworkAddress{}, fmt.Errorf("invalid start port: %v", err)
-		}
-		end, err = strconv.ParseUint(after, 10, 16)
-		if err != nil {
-			return NetworkAddress{}, fmt.Errorf("invalid end port: %v", err)
-		}
-		if end < start {
-			return NetworkAddress{}, fmt.Errorf("end port must not be less than start port")
-		}
-		if (end - start) > maxPortSpan {
-			return NetworkAddress{}, fmt.Errorf("port range exceeds %d ports", maxPortSpan)
-		}
+	start, err = strconv.ParseUint(ports[0], 10, 16)
+	if err != nil {
+		return NetworkAddress{}, fmt.Errorf("invalid start port: %v", err)
+	}
+	end, err = strconv.ParseUint(ports[1], 10, 16)
+	if err != nil {
+		return NetworkAddress{}, fmt.Errorf("invalid end port: %v", err)
+	}
+	if end < start {
+		return NetworkAddress{}, fmt.Errorf("end port must not be less than start port")
+	}
+	if (end - start) > maxPortSpan {
+		return NetworkAddress{}, fmt.Errorf("port range exceeds %d ports", maxPortSpan)
 	}
 	return NetworkAddress{
 		Network:   network,
@@ -395,29 +469,15 @@ func ParseNetworkAddress(addr string) (NetworkAddress, error) {
 // SplitNetworkAddress splits a into its network, host, and port components.
 // Note that port may be a port range (:X-Y), or omitted for unix sockets.
 func SplitNetworkAddress(a string) (network, host, port string, err error) {
-	beforeSlash, afterSlash, slashFound := strings.Cut(a, "/")
-	if slashFound {
-		network = strings.ToLower(strings.TrimSpace(beforeSlash))
-		a = afterSlash
+	if idx := strings.Index(a, "/"); idx >= 0 {
+		network = strings.ToLower(strings.TrimSpace(a[:idx]))
+		a = a[idx+1:]
 	}
 	if isUnixNetwork(network) {
 		host = a
 		return
 	}
 	host, port, err = net.SplitHostPort(a)
-	if err == nil || a == "" {
-		return
-	}
-	// in general, if there was an error, it was likely "missing port",
-	// so try adding a bogus port to take advantage of standard library's
-	// robust parser, then strip the artificial port before returning
-	// (don't overwrite original error though; might still be relevant)
-	var err2 error
-	host, port, err2 = net.SplitHostPort(a + ":0")
-	if err2 == nil {
-		err = nil
-		port = ""
-	}
 	return
 }
 
@@ -439,35 +499,6 @@ func JoinNetworkAddress(network, host, port string) string {
 	return a
 }
 
-// RegisterNetwork registers a network type with Caddy so that if a listener is
-// created for that network type, getListener will be invoked to get the listener.
-// This should be called during init() and will panic if the network type is standard
-// or reserved, or if it is already registered. EXPERIMENTAL and subject to change.
-func RegisterNetwork(network string, getListener ListenerFunc) {
-	network = strings.TrimSpace(strings.ToLower(network))
-
-	if network == "tcp" || network == "tcp4" || network == "tcp6" ||
-		network == "udp" || network == "udp4" || network == "udp6" ||
-		network == "unix" || network == "unixpacket" || network == "unixgram" ||
-		strings.HasPrefix("ip:", network) || strings.HasPrefix("ip4:", network) || strings.HasPrefix("ip6:", network) {
-		panic("network type " + network + " is reserved")
-	}
-
-	if _, ok := networkTypes[strings.ToLower(network)]; ok {
-		panic("network type " + network + " is already registered")
-	}
-
-	networkTypes[network] = getListener
-}
-
-// ListenerFunc is a function that can return a listener given a network and address.
-// The listeners must be capable of overlapping: with Caddy, new configs are loaded
-// before old ones are unloaded, so listeners may overlap briefly if the configs
-// both need the same listener. EXPERIMENTAL and subject to change.
-type ListenerFunc func(network, addr string) (net.Listener, error)
-
-var networkTypes = map[string]ListenerFunc{}
-
 // ListenerWrapper is a type that wraps a listener
 // so it can modify the input listener's methods.
 // Modules that implement this interface are found

listeners_fuzz.go

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 //go:build gofuzz
+// +build gofuzz
 
 package caddy
 

listeners_test.go

@@ -32,24 +32,9 @@ func TestSplitNetworkAddress(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			input:      "foo",
-			expectHost: "foo",
-		},
-		{
-			input: ":", // empty host & empty port
-		},
-		{
-			input:     "::",
+			input:     "foo",
 			expectErr: true,
 		},
-		{
-			input:      "[::]",
-			expectHost: "::",
-		},
-		{
-			input:      ":1234",
-			expectPort: "1234",
-		},
 		{
 			input:      "foo:1234",
 			expectHost: "foo",
@@ -95,10 +80,10 @@ func TestSplitNetworkAddress(t *testing.T) {
 	} {
 		actualNetwork, actualHost, actualPort, err := SplitNetworkAddress(tc.input)
 		if tc.expectErr && err == nil {
-			t.Errorf("Test %d: Expected error but got %v", i, err)
+			t.Errorf("Test %d: Expected error but got: %v", i, err)
 		}
 		if !tc.expectErr && err != nil {
-			t.Errorf("Test %d: Expected no error but got %v", i, err)
+			t.Errorf("Test %d: Expected no error but got: %v", i, err)
 		}
 		if actualNetwork != tc.expectNetwork {
 			t.Errorf("Test %d: Expected network '%s' but got '%s'", i, tc.expectNetwork, actualNetwork)
@@ -184,17 +169,8 @@ func TestParseNetworkAddress(t *testing.T) {
 			expectErr: true,
 		},
 		{
-			input: ":",
-			expectAddr: NetworkAddress{
-				Network: "tcp",
-			},
-		},
-		{
-			input: "[::]",
-			expectAddr: NetworkAddress{
-				Network: "tcp",
-				Host:    "::",
-			},
+			input:     ":",
+			expectErr: true,
 		},
 		{
 			input: ":1234",
@@ -331,85 +307,3 @@ func TestJoinHostPort(t *testing.T) {
 		}
 	}
 }
-
-func TestExpand(t *testing.T) {
-	for i, tc := range []struct {
-		input  NetworkAddress
-		expect []NetworkAddress
-	}{
-		{
-			input: NetworkAddress{
-				Network:   "tcp",
-				Host:      "localhost",
-				StartPort: 2000,
-				EndPort:   2000,
-			},
-			expect: []NetworkAddress{
-				{
-					Network:   "tcp",
-					Host:      "localhost",
-					StartPort: 2000,
-					EndPort:   2000,
-				},
-			},
-		},
-		{
-			input: NetworkAddress{
-				Network:   "tcp",
-				Host:      "localhost",
-				StartPort: 2000,
-				EndPort:   2002,
-			},
-			expect: []NetworkAddress{
-				{
-					Network:   "tcp",
-					Host:      "localhost",
-					StartPort: 2000,
-					EndPort:   2000,
-				},
-				{
-					Network:   "tcp",
-					Host:      "localhost",
-					StartPort: 2001,
-					EndPort:   2001,
-				},
-				{
-					Network:   "tcp",
-					Host:      "localhost",
-					StartPort: 2002,
-					EndPort:   2002,
-				},
-			},
-		},
-		{
-			input: NetworkAddress{
-				Network:   "tcp",
-				Host:      "localhost",
-				StartPort: 2000,
-				EndPort:   1999,
-			},
-			expect: []NetworkAddress{},
-		},
-		{
-			input: NetworkAddress{
-				Network:   "unix",
-				Host:      "/foo/bar",
-				StartPort: 0,
-				EndPort:   0,
-			},
-			expect: []NetworkAddress{
-				{
-					Network:   "unix",
-					Host:      "/foo/bar",
-					StartPort: 0,
-					EndPort:   0,
-				},
-			},
-		},
-	} {
-		actual := tc.input.Expand()
-		if !reflect.DeepEqual(actual, tc.expect) {
-			t.Errorf("Test %d: Expected %+v but got %+v", i, tc.expect, actual)
-		}
-	}
-}

modules.go

@@ -44,7 +44,7 @@ import (
 // Provisioner, the Provision() method is called. 4) If the
 // module is a Validator, the Validate() method is called.
 // 5) The module will probably be type-asserted from
-// 'any' to some other, more useful interface expected
+// interface{} to some other, more useful interface expected
 // by the host module. For example, HTTP handler modules are
 // type-asserted as caddyhttp.MiddlewareHandler values.
 // 6) When a module's containing Context is canceled, if it is
@@ -172,7 +172,7 @@ func GetModule(name string) (ModuleInfo, error) {
 // GetModuleName returns a module's name (the last label of its ID)
 // from an instance of its value. If the value is not a module, an
 // empty string will be returned.
-func GetModuleName(instance any) string {
+func GetModuleName(instance interface{}) string {
 	var name string
 	if mod, ok := instance.(Module); ok {
 		name = mod.CaddyModule().ID.Name()
@@ -182,7 +182,7 @@ func GetModuleName(instance any) string {
 
 // GetModuleID returns a module's ID from an instance of its value.
 // If the value is not a module, an empty string will be returned.
-func GetModuleID(instance any) string {
+func GetModuleID(instance interface{}) string {
 	var id string
 	if mod, ok := instance.(Module); ok {
 		id = string(mod.CaddyModule().ID)
@@ -259,7 +259,7 @@ func Modules() []string {
 // where raw must be a JSON encoding of a map. It returns that value,
 // along with the result of removing that key from raw.
 func getModuleNameInline(moduleNameKey string, raw json.RawMessage) (string, json.RawMessage, error) {
-	var tmp map[string]any
+	var tmp map[string]interface{}
 	err := json.Unmarshal(raw, &tmp)
 	if err != nil {
 		return "", nil, err
@@ -324,11 +324,11 @@ func ParseStructTag(tag string) (map[string]string, error) {
 		if pair == "" {
 			continue
 		}
-		before, after, isCut := strings.Cut(pair, "=")
-		if !isCut {
+		parts := strings.SplitN(pair, "=", 2)
+		if len(parts) != 2 {
 			return nil, fmt.Errorf("missing key in '%s' (pair %d)", pair, i)
 		}
-		results[before] = after
+		results[parts[0]] = parts[1]
 	}
 	return results, nil
 }
@@ -337,7 +337,7 @@ func ParseStructTag(tag string) (map[string]string, error) {
 // if any of the fields are unrecognized. Useful when decoding
 // module configurations, where you want to be more sure they're
 // correct.
-func strictUnmarshalJSON(data []byte, v any) error {
+func strictUnmarshalJSON(data []byte, v interface{}) error {
 	dec := json.NewDecoder(bytes.NewReader(data))
 	dec.DisallowUnknownFields()
 	return dec.Decode(v)

modules/caddyevents/app.go

@@ -1,373 +0,0 @@
-// Copyright 2015 Matthew Holt and The Caddy Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package caddyevents
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"strings"
-	"time"
-
-	"github.com/caddyserver/caddy/v2"
-	"github.com/google/uuid"
-	"go.uber.org/zap"
-)
-
-func init() {
-	caddy.RegisterModule(App{})
-}
-
-// App implements a global eventing system within Caddy.
-// Modules can emit and subscribe to events, providing
-// hooks into deep parts of the code base that aren't
-// otherwise accessible. Events provide information about
-// what and when things are happening, and this facility
-// allows handlers to take action when events occur,
-// add information to the event's metadata, and even
-// control program flow in some cases.
-//
-// Events are propagated in a DOM-like fashion. An event
-// emitted from module `a.b.c` (the "origin") will first
-// invoke handlers listening to `a.b.c`, then `a.b`,
-// then `a`, then those listening regardless of origin.
-// If a handler returns the special error Aborted, then
-// propagation immediately stops and the event is marked
-// as aborted. Emitters may optionally choose to adjust
-// program flow based on an abort.
-//
-// Modules can subscribe to events by origin and/or name.
-// A handler is invoked only if it is subscribed to the
-// event by name and origin. Subscriptions should be
-// registered during the provisioning phase, before apps
-// are started.
-//
-// Event handlers are fired synchronously as part of the
-// regular flow of the program. This allows event handlers
-// to control the flow of the program if the origin permits
-// it and also allows handlers to convey new information
-// back into the origin module before it continues.
-// In essence, event handlers are similar to HTTP
-// middleware handlers.
-//
-// Event bindings/subscribers are unordered; i.e.
-// event handlers are invoked in an arbitrary order.
-// Event handlers should not rely on the logic of other
-// handlers to succeed.
-//
-// The entirety of this app module is EXPERIMENTAL and
-// subject to change. Pay attention to release notes.
-type App struct {
-	// Subscriptions bind handlers to one or more events
-	// either globally or scoped to specific modules or module
-	// namespaces.
-	Subscriptions []*Subscription `json:"subscriptions,omitempty"`
-
-	// Map of event name to map of module ID/namespace to handlers
-	subscriptions map[string]map[caddy.ModuleID][]Handler
-
-	logger  *zap.Logger
-	started bool
-}
-
-// Subscription represents binding of one or more handlers to
-// one or more events.
-type Subscription struct {
-	// The name(s) of the event(s) to bind to. Default: all events.
-	Events []string `json:"events,omitempty"`
-
-	// The ID or namespace of the module(s) from which events
-	// originate to listen to for events. Default: all modules.
-	//
-	// Events propagate up, so events emitted by module "a.b.c"
-	// will also trigger the event for "a.b" and "a". Thus, to
-	// receive all events from "a.b.c" and "a.b.d", for example,
-	// one can subscribe to either "a.b" or all of "a" entirely.
-	Modules []caddy.ModuleID `json:"modules,omitempty"`
-
-	// The event handler modules. These implement the actual
-	// behavior to invoke when an event occurs. At least one
-	// handler is required.
-	HandlersRaw []json.RawMessage `json:"handlers,omitempty" caddy:"namespace=events.handlers inline_key=handler"`
-
-	// The decoded handlers; Go code that is subscribing to
-	// an event should set this field directly; HandlersRaw
-	// is meant for JSON configuration to fill out this field.
-	Handlers []Handler `json:"-"`
-}
-
-// CaddyModule returns the Caddy module information.
-func (App) CaddyModule() caddy.ModuleInfo {
-	return caddy.ModuleInfo{
-		ID:  "events",
-		New: func() caddy.Module { return new(App) },
-	}
-}
-
-// Provision sets up the app.
-func (app *App) Provision(ctx caddy.Context) error {
-	app.logger = ctx.Logger()
-	app.subscriptions = make(map[string]map[caddy.ModuleID][]Handler)
-
-	for _, sub := range app.Subscriptions {
-		if sub.HandlersRaw != nil {
-			handlersIface, err := ctx.LoadModule(sub, "HandlersRaw")
-			if err != nil {
-				return fmt.Errorf("loading event subscriber modules: %v", err)
-			}
-			for _, h := range handlersIface.([]any) {
-				sub.Handlers = append(sub.Handlers, h.(Handler))
-			}
-			if len(sub.Handlers) == 0 {
-				// pointless to bind without any handlers
-				return fmt.Errorf("no handlers defined")
-			}
-		}
-	}
-
-	return nil
-}
-
-// Start runs the app.
-func (app *App) Start() error {
-	for _, sub := range app.Subscriptions {
-		if err := app.Subscribe(sub); err != nil {
-			return err
-		}
-	}
-
-	app.started = true
-
-	return nil
-}
-
-// Stop gracefully shuts down the app.
-func (app *App) Stop() error {
-	return nil
-}
-
-// Subscribe binds one or more event handlers to one or more events
-// according to the subscription s. For now, subscriptions can only
-// be created during the provision phase; new bindings cannot be
-// created after the events app has started.
-func (app *App) Subscribe(s *Subscription) error {
-	if app.started {
-		return fmt.Errorf("events already started; new subscriptions closed")
-	}
-
-	// handle special case of catch-alls (omission of event name or module space implies all)
-	if len(s.Events) == 0 {
-		s.Events = []string{""}
-	}
-	if len(s.Modules) == 0 {
-		s.Modules = []caddy.ModuleID{""}
-	}
-
-	for _, eventName := range s.Events {
-		if app.subscriptions[eventName] == nil {
-			app.subscriptions[eventName] = make(map[caddy.ModuleID][]Handler)
-		}
-		for _, originModule := range s.Modules {
-			app.subscriptions[eventName][originModule] = append(app.subscriptions[eventName][originModule], s.Handlers...)
-		}
-	}
-
-	return nil
-}
-
-// On is syntactic sugar for Subscribe() that binds a single handler
-// to a single event from any module. If the eventName is empty string,
-// it counts for all events.
-func (app *App) On(eventName string, handler Handler) error {
-	return app.Subscribe(&Subscription{
-		Events:   []string{eventName},
-		Handlers: []Handler{handler},
-	})
-}
-
-// Emit creates and dispatches an event named eventName to all relevant handlers with
-// the metadata data. Events are emitted and propagated synchronously. The returned Event
-// value will have any additional information from the invoked handlers.
-func (app *App) Emit(ctx caddy.Context, eventName string, data map[string]any) Event {
-	logger := app.logger.With(zap.String("name", eventName))
-
-	id, err := uuid.NewRandom()
-	if err != nil {
-		logger.Error("failed generating new event ID", zap.Error(err))
-	}
-
-	eventName = strings.ToLower(eventName)
-
-	e := Event{
-		id:     id,
-		ts:     time.Now(),
-		name:   eventName,
-		origin: ctx.Module(),
-		data:   data,
-	}
-
-	logger = logger.With(
-		zap.String("id", e.id.String()),
-		zap.String("origin", e.origin.CaddyModule().String()))
-
-	// add event info to replacer, make sure it's in the context
-	repl, ok := ctx.Context.Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
-	if !ok {
-		repl = caddy.NewReplacer()
-		ctx.Context = context.WithValue(ctx.Context, caddy.ReplacerCtxKey, repl)
-	}
-	repl.Map(func(key string) (any, bool) {
-		switch key {
-		case "event":
-			return e, true
-		case "event.id":
-			return e.id, true
-		case "event.name":
-			return e.name, true
-		case "event.time":
-			return e.ts, true
-		case "event.time_unix":
-			return e.ts.UnixMilli(), true
-		case "event.module":
-			return e.origin.CaddyModule().ID, true
-		case "event.data":
-			return e.data, true
-		}
-
-		if strings.HasPrefix(key, "event.data.") {
-			key = strings.TrimPrefix(key, "event.data.")
-			if val, ok := data[key]; ok {
-				return val, true
-			}
-		}
-
-		return nil, false
-	})
-
-	logger.Debug("event", zap.Any("data", e.data))
-
-	// invoke handlers bound to the event by name and also all events; this for loop
-	// iterates twice at most: once for the event name, once for "" (all events)
-	for {
-		moduleID := e.origin.CaddyModule().ID
-
-		// implement propagation up the module tree (i.e. start with "a.b.c" then "a.b" then "a" then "")
-		for {
-			if app.subscriptions[eventName] == nil {
-				break // shortcut if event not bound at all
-			}
-
-			for _, handler := range app.subscriptions[eventName][moduleID] {
-				select {
-				case <-ctx.Done():
-					logger.Error("context canceled; event handling stopped")
-					return e
-				default:
-				}
-
-				if err := handler.Handle(ctx, e); err != nil {
-					aborted := errors.Is(err, ErrAborted)
-
-					logger.Error("handler error",
-						zap.Error(err),
-						zap.Bool("aborted", aborted))
-
-					if aborted {
-						e.Aborted = err
-						return e
-					}
-				}
-			}
-
-			if moduleID == "" {
-				break
-			}
-			lastDot := strings.LastIndex(string(moduleID), ".")
-			if lastDot < 0 {
-				moduleID = "" // include handlers bound to events regardless of module
-			} else {
-				moduleID = moduleID[:lastDot]
-			}
-		}
-
-		// include handlers listening to all events
-		if eventName == "" {
-			break
-		}
-		eventName = ""
-	}
-
-	return e
-}
-
-// Event represents something that has happened or is happening.
-type Event struct {
-	id     uuid.UUID
-	ts     time.Time
-	name   string
-	origin caddy.Module
-	data   map[string]any
-
-	// If non-nil, the event has been aborted, meaning
-	// propagation has stopped to other handlers and
-	// the code should stop what it was doing. Emitters
-	// may choose to use this as a signal to adjust their
-	// code path appropriately.
-	Aborted error
-}
-
-// CloudEvent exports event e as a structure that, when
-// serialized as JSON, is compatible with the
-// CloudEvents spec.
-func (e Event) CloudEvent() CloudEvent {
-	dataJSON, _ := json.Marshal(e.data)
-	return CloudEvent{
-		ID:              e.id.String(),
-		Source:          e.origin.CaddyModule().String(),
-		SpecVersion:     "1.0",
-		Type:            e.name,
-		Time:            e.ts,
-		DataContentType: "application/json",
-		Data:            dataJSON,
-	}
-}
-
-// CloudEvent is a JSON-serializable structure that
-// is compatible with the CloudEvents specification.
-// See https://cloudevents.io.
-type CloudEvent struct {
-	ID              string          `json:"id"`
-	Source          string          `json:"source"`
-	SpecVersion     string          `json:"specversion"`
-	Type            string          `json:"type"`
-	Time            time.Time       `json:"time"`
-	DataContentType string          `json:"datacontenttype,omitempty"`
-	Data            json.RawMessage `json:"data,omitempty"`
-}
-
-// ErrAborted cancels an event.
-var ErrAborted = errors.New("event aborted")
-
-// Handler is a type that can handle events.
-type Handler interface {
-	Handle(context.Context, Event) error
-}
-
-// Interface guards
-var (
-	_ caddy.App         = (*App)(nil)
-	_ caddy.Provisioner = (*App)(nil)
-)

modules/caddyevents/eventsconfig/caddyfile.go

@@ -1,88 +0,0 @@
-// Copyright 2015 Matthew Holt and The Caddy Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Package eventsconfig is for configuring caddyevents.App with the
-// Caddyfile. This code can't be in the caddyevents package because
-// the httpcaddyfile package imports caddyhttp, which imports
-// caddyevents: hence, it creates an import cycle.
-package eventsconfig
-
-import (
-	"encoding/json"
-
-	"github.com/caddyserver/caddy/v2/caddyconfig"
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
-	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
-	"github.com/caddyserver/caddy/v2/modules/caddyevents"
-)
-
-func init() {
-	httpcaddyfile.RegisterGlobalOption("events", parseApp)
-}
-
-// parseApp configures the "events" global option from Caddyfile to set up the events app.
-// Syntax:
-//
-//	events {
-//		on <event> <handler_module...>
-//	}
-//
-// If <event> is *, then it will bind to all events.
-func parseApp(d *caddyfile.Dispenser, _ any) (any, error) {
-	app := new(caddyevents.App)
-
-	// consume the option name
-	if !d.Next() {
-		return nil, d.ArgErr()
-	}
-
-	// handle the block
-	for d.NextBlock(0) {
-		switch d.Val() {
-		case "on":
-			if !d.NextArg() {
-				return nil, d.ArgErr()
-			}
-			eventName := d.Val()
-			if eventName == "*" {
-				eventName = ""
-			}
-
-			if !d.NextArg() {
-				return nil, d.ArgErr()
-			}
-			handlerName := d.Val()
-			modID := "events.handlers." + handlerName
-			unm, err := caddyfile.UnmarshalModule(d, modID)
-			if err != nil {
-				return nil, err
-			}
-
-			app.Subscriptions = append(app.Subscriptions, &caddyevents.Subscription{
-				Events: []string{eventName},
-				HandlersRaw: []json.RawMessage{
-					caddyconfig.JSONModuleObject(unm, "handler", handlerName, nil),
-				},
-			})
-
-		default:
-			return nil, d.ArgErr()
-		}
-	}
-
-	return httpcaddyfile.App{
-		Name:  "events",
-		Value: caddyconfig.JSON(app, nil),
-	}, nil
-}

modules/caddyhttp/app.go

@@ -20,12 +20,11 @@ import (
 	"fmt"
 	"net/http"
 	"strconv"
-	"sync"
 	"time"
 
 	"github.com/caddyserver/caddy/v2"
-	"github.com/caddyserver/caddy/v2/modules/caddyevents"
 	"github.com/caddyserver/caddy/v2/modules/caddytls"
+	"github.com/lucas-clemente/quic-go/http3"
 	"go.uber.org/zap"
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/h2c"
@@ -96,8 +95,6 @@ func init() {
 // `{http.request.uri}` | The full request URI
 // `{http.response.header.*}` | Specific response header field
 // `{http.vars.*}` | Custom variables in the HTTP handler chain
-// `{http.shutting_down}` | True if the HTTP app is shutting down
-// `{http.time_until_shutdown}` | Time until HTTP server shutdown, if scheduled
 type App struct {
 	// HTTPPort specifies the port to use for HTTP (as opposed to HTTPS),
 	// which is used when setting up HTTP->HTTPS redirects or ACME HTTP
@@ -110,31 +107,20 @@ type App struct {
 	HTTPSPort int `json:"https_port,omitempty"`
 
 	// GracePeriod is how long to wait for active connections when shutting
-	// down the servers. During the grace period, no new connections are
-	// accepted, idle connections are closed, and active connections will
-	// be given the full length of time to become idle and close.
-	// Once the grace period is over, connections will be forcefully closed.
-	// If zero, the grace period is eternal. Default: 0.
+	// down the server. Once the grace period is over, connections will
+	// be forcefully closed.
 	GracePeriod caddy.Duration `json:"grace_period,omitempty"`
 
-	// ShutdownDelay is how long to wait before initiating the grace
-	// period. When this app is stopping (e.g. during a config reload or
-	// process exit), all servers will be shut down. Normally this immediately
-	// initiates the grace period. However, if this delay is configured, servers
-	// will not be shut down until the delay is over. During this time, servers
-	// continue to function normally and allow new connections. At the end, the
-	// grace period will begin. This can be useful to allow downstream load
-	// balancers time to move this instance out of the rotation without hiccups.
-	//
-	// When shutdown has been scheduled, placeholders {http.shutting_down} (bool)
-	// and {http.time_until_shutdown} (duration) may be useful for health checks.
-	ShutdownDelay caddy.Duration `json:"shutdown_delay,omitempty"`
+	Strict *StrictOptions `json:"strict,omitempty"`
 
 	// Servers is the list of servers, keyed by arbitrary names chosen
 	// at your discretion for your own convenience; the keys do not
 	// affect functionality.
 	Servers map[string]*Server `json:"servers,omitempty"`
 
+	servers   []*http.Server
+	h3servers []*http3.Server
+
 	ctx    caddy.Context
 	logger *zap.Logger
 	tlsApp *caddytls.TLS
@@ -143,6 +129,13 @@ type App struct {
 	allCertDomains []string
 }
 
+type StrictOptions struct {
+	Disabled            bool `json:"disable,omitempty"`
+	LenientQueryStrings bool `json:"lenient_query_strings,omitempty"`
+	LenientPaths        bool `json:"lenient_paths,omitempty"`
+	LenientHeaders      bool `json:"lenient_headers,omitempty"`
+}
+
 // CaddyModule returns the Caddy module information.
 func (App) CaddyModule() caddy.ModuleInfo {
 	return caddy.ModuleInfo{
@@ -160,12 +153,7 @@ func (app *App) Provision(ctx caddy.Context) error {
 	}
 	app.tlsApp = tlsAppIface.(*caddytls.TLS)
 	app.ctx = ctx
-	app.logger = ctx.Logger()
-
-	eventsAppIface, err := ctx.App("events")
-	if err != nil {
-		return fmt.Errorf("getting events app: %v", err)
-	}
+	app.logger = ctx.Logger(app)
 
 	repl := caddy.NewReplacer()
 
@@ -178,33 +166,18 @@ func (app *App) Provision(ctx caddy.Context) error {
 	}
 
 	// prepare each server
-	oldContext := ctx.Context
 	for srvName, srv := range app.Servers {
-		ctx.Context = context.WithValue(oldContext, ServerCtxKey, srv)
 		srv.name = srvName
 		srv.tlsApp = app.tlsApp
-		srv.events = eventsAppIface.(*caddyevents.App)
-		srv.ctx = ctx
 		srv.logger = app.logger.Named("log")
 		srv.errorLogger = app.logger.Named("log.error")
-		srv.shutdownAtMu = new(sync.RWMutex)
+		srv.strict = app.Strict
 
 		// only enable access logs if configured
 		if srv.Logs != nil {
 			srv.accessLogger = app.logger.Named("log.access")
 		}
 
-		// the Go standard library does not let us serve only HTTP/2 using
-		// http.Server; we would probably need to write our own server
-		if !srv.protocol("h1") && (srv.protocol("h2") || srv.protocol("h2c")) {
-			return fmt.Errorf("server %s: cannot enable HTTP/2 or H2C without enabling HTTP/1.1; add h1 to protocols or remove h2/h2c", srvName)
-		}
-
-		// if no protocols configured explicitly, enable all except h2c
-		if len(srv.Protocols) == 0 {
-			srv.Protocols = []string{"h1", "h2", "h3"}
-		}
-
 		// if not explicitly configured by the user, disallow TLS
 		// client auth bypass (domain fronting) which could
 		// otherwise be exploited by sending an unprotected SNI
@@ -216,7 +189,8 @@ func (app *App) Provision(ctx caddy.Context) error {
 		// based on hostname
 		if srv.StrictSNIHost == nil && srv.hasTLSClientAuth() {
 			app.logger.Warn("enabling strict SNI-Host enforcement because TLS client auth is configured",
-				zap.String("server_id", srvName))
+				zap.String("server_id", srvName),
+			)
 			trueBool := true
 			srv.StrictSNIHost = &trueBool
 		}
@@ -225,7 +199,8 @@ func (app *App) Provision(ctx caddy.Context) error {
 		for i := range srv.Listen {
 			lnOut, err := repl.ReplaceOrErr(srv.Listen[i], true, true)
 			if err != nil {
-				return fmt.Errorf("server %s, listener %d: %v", srvName, i, err)
+				return fmt.Errorf("server %s, listener %d: %v",
+					srvName, i, err)
 			}
 			srv.Listen[i] = lnOut
 		}
@@ -237,7 +212,7 @@ func (app *App) Provision(ctx caddy.Context) error {
 				return fmt.Errorf("loading listener wrapper modules: %v", err)
 			}
 			var hasTLSPlaceholder bool
-			for i, val := range vals.([]any) {
+			for i, val := range vals.([]interface{}) {
 				if _, ok := val.(*tlsPlaceholderWrapper); ok {
 					if i == 0 {
 						// putting the tls placeholder wrapper first is nonsensical because
@@ -265,7 +240,7 @@ func (app *App) Provision(ctx caddy.Context) error {
 		// route handler so that important security checks are done, etc.
 		primaryRoute := emptyHandler
 		if srv.Routes != nil {
-			err := srv.Routes.ProvisionHandlers(ctx, srv.Metrics)
+			err := srv.Routes.ProvisionHandlers(ctx)
 			if err != nil {
 				return fmt.Errorf("server %s: setting up route handlers: %v", srvName, err)
 			}
@@ -295,7 +270,7 @@ func (app *App) Provision(ctx caddy.Context) error {
 			srv.IdleTimeout = defaultIdleTimeout
 		}
 	}
-	ctx.Context = oldContext
+
 	return nil
 }
 
@@ -333,7 +308,7 @@ func (app *App) Start() error {
 	}
 
 	for srvName, srv := range app.Servers {
-		srv.server = &http.Server{
+		s := &http.Server{
 			ReadTimeout:       time.Duration(srv.ReadTimeout),
 			ReadHeaderTimeout: time.Duration(srv.ReadHeaderTimeout),
 			WriteTimeout:      time.Duration(srv.WriteTimeout),
@@ -343,38 +318,12 @@ func (app *App) Start() error {
 			ErrorLog:          serverLogger,
 		}
 
-		// disable HTTP/2, which we enabled by default during provisioning
-		if !srv.protocol("h2") {
-			srv.server.TLSNextProto = make(map[string]func(*http.Server, *tls.Conn, http.Handler))
-			for _, cp := range srv.TLSConnPolicies {
-				// the TLSConfig was already provisioned, so... manually remove it
-				for i, np := range cp.TLSConfig.NextProtos {
-					if np == "h2" {
-						cp.TLSConfig.NextProtos = append(cp.TLSConfig.NextProtos[:i], cp.TLSConfig.NextProtos[i+1:]...)
-						break
-					}
-				}
-				// remove it from the parent connection policy too, just to keep things tidy
-				for i, alpn := range cp.ALPN {
-					if alpn == "h2" {
-						cp.ALPN = append(cp.ALPN[:i], cp.ALPN[i+1:]...)
-						break
-					}
-				}
-			}
-		}
-
-		// this TLS config is used by the std lib to choose the actual TLS config for connections
-		// by looking through the connection policies to find the first one that matches
-		tlsCfg := srv.TLSConnPolicies.TLSConfig(app.ctx)
-		srv.configureServer(srv.server)
-
-		// enable H2C if configured
-		if srv.protocol("h2c") {
+		// enable h2c if configured
+		if srv.AllowH2C {
 			h2server := &http2.Server{
 				IdleTimeout: time.Duration(srv.IdleTimeout),
 			}
-			srv.server.Handler = h2c.NewHandler(srv, h2server)
+			s.Handler = h2c.NewHandler(srv, h2server)
 		}
 
 		for _, lnAddr := range srv.Listen {
@@ -382,12 +331,10 @@ func (app *App) Start() error {
 			if err != nil {
 				return fmt.Errorf("%s: parsing listen address '%s': %v", srvName, lnAddr, err)
 			}
-			srv.addresses = append(srv.addresses, listenAddr)
-
 			for portOffset := uint(0); portOffset < listenAddr.PortRangeSize(); portOffset++ {
 				// create the listener for this socket
 				hostport := listenAddr.JoinHostPort(portOffset)
-				ln, err := caddy.ListenTimeout(listenAddr.Network, hostport, time.Duration(srv.KeepAliveInterval))
+				ln, err := caddy.Listen(listenAddr.Network, hostport)
 				if err != nil {
 					return fmt.Errorf("%s: listening on %s: %v", listenAddr.Network, hostport, err)
 				}
@@ -405,16 +352,34 @@ func (app *App) Start() error {
 				// enable TLS if there is a policy and if this is not the HTTP port
 				useTLS := len(srv.TLSConnPolicies) > 0 && int(listenAddr.StartPort+portOffset) != app.httpPort()
 				if useTLS {
-					// create TLS listener - this enables and terminates TLS
+					// create TLS listener
+					tlsCfg := srv.TLSConnPolicies.TLSConfig(app.ctx)
 					ln = tls.NewListener(ln, tlsCfg)
 
-					// enable HTTP/3 if configured
-					if srv.protocol("h3") {
-						app.logger.Info("enabling HTTP/3 listener", zap.String("addr", hostport))
-						if err := srv.serveHTTP3(hostport, tlsCfg); err != nil {
-							return err
+					/////////
+					// TODO: HTTP/3 support is experimental for now
+					if srv.ExperimentalHTTP3 {
+						app.logger.Info("enabling experimental HTTP/3 listener",
+							zap.String("addr", hostport),
+						)
+						h3ln, err := caddy.ListenQUIC(hostport, tlsCfg)
+						if err != nil {
+							return fmt.Errorf("getting HTTP/3 QUIC listener: %v", err)
 						}
+						h3srv := &http3.Server{
+							Server: &http.Server{
+								Addr:      hostport,
+								Handler:   srv,
+								TLSConfig: tlsCfg,
+								ErrorLog:  serverLogger,
+							},
+						}
+						//nolint:errcheck
+						go h3srv.ServeListener(h3ln)
+						app.h3servers = append(app.h3servers, h3srv)
+						srv.h3server = h3srv
 					}
+					/////////
 				}
 
 				// finish wrapping listener where we left off before TLS
@@ -433,22 +398,15 @@ func (app *App) Start() error {
 
 				app.logger.Debug("starting server loop",
 					zap.String("address", ln.Addr().String()),
+					zap.Bool("http3", srv.ExperimentalHTTP3),
 					zap.Bool("tls", useTLS),
-					zap.Bool("http3", srv.h3server != nil))
+				)
 
-				srv.listeners = append(srv.listeners, ln)
-
-				// enable HTTP/1 if configured
-				if srv.protocol("h1") {
-					//nolint:errcheck
-					go srv.server.Serve(ln)
-				}
+				//nolint:errcheck
+				go s.Serve(ln)
+				app.servers = append(app.servers, s)
 			}
 		}
-
-		srv.logger.Info("server running",
-			zap.String("name", srvName),
-			zap.Strings("protocols", srv.Protocols))
 	}
 
 	// finish automatic HTTPS by finally beginning
@@ -464,65 +422,26 @@ func (app *App) Start() error {
 // Stop gracefully shuts down the HTTP server.
 func (app *App) Stop() error {
 	ctx := context.Background()
-
-	// see if any listeners in our config will be closing or if they are continuing
-	// hrough a reload; because if any are closing, we will enforce shutdown delay
-	var delay bool
-	scheduledTime := time.Now().Add(time.Duration(app.ShutdownDelay))
-	if app.ShutdownDelay > 0 {
-		for _, server := range app.Servers {
-			for _, na := range server.addresses {
-				for _, addr := range na.Expand() {
-					if caddy.ListenerUsage(addr.Network, addr.JoinHostPort(0)) < 2 {
-						app.logger.Debug("listener closing and shutdown delay is configured", zap.String("address", addr.String()))
-						server.shutdownAtMu.Lock()
-						server.shutdownAt = scheduledTime
-						server.shutdownAtMu.Unlock()
-						delay = true
-					} else {
-						app.logger.Debug("shutdown delay configured but listener will remain open", zap.String("address", addr.String()))
-					}
-				}
-			}
-		}
-	}
-
-	// honor scheduled/delayed shutdown time
-	if delay {
-		app.logger.Debug("shutdown scheduled",
-			zap.Duration("delay_duration", time.Duration(app.ShutdownDelay)),
-			zap.Time("time", scheduledTime))
-		time.Sleep(time.Duration(app.ShutdownDelay))
-	}
-
-	// enforce grace period if configured
 	if app.GracePeriod > 0 {
 		var cancel context.CancelFunc
 		ctx, cancel = context.WithTimeout(ctx, time.Duration(app.GracePeriod))
 		defer cancel()
-		app.logger.Debug("servers shutting down; grace period initiated", zap.Duration("duration", time.Duration(app.GracePeriod)))
-	} else {
-		app.logger.Debug("servers shutting down with eternal grace period")
 	}
-
-	// shut down servers
-	for _, server := range app.Servers {
-		if err := server.server.Shutdown(ctx); err != nil {
-			app.logger.Error("server shutdown",
-				zap.Error(err),
-				zap.Strings("addresses", server.Listen))
-		}
-
-		if server.h3server != nil {
-			// TODO: CloseGracefully, once implemented upstream (see https://github.com/lucas-clemente/quic-go/issues/2103)
-			if err := server.h3server.Close(); err != nil {
-				app.logger.Error("HTTP/3 server shutdown",
-					zap.Error(err),
-					zap.Strings("addresses", server.Listen))
-			}
+	for _, s := range app.servers {
+		err := s.Shutdown(ctx)
+		if err != nil {
+			return err
 		}
 	}
 
+	for _, s := range app.h3servers {
+		// TODO: CloseGracefully, once implemented upstream
+		// (see https://github.com/lucas-clemente/quic-go/issues/2103)
+		err := s.Close()
+		if err != nil {
+			return err
+		}
+	}
 	return nil
 }
 

modules/caddyhttp/autohttps.go

@@ -93,9 +93,6 @@ func (app *App) automaticHTTPSPhase1(ctx caddy.Context, repl *caddy.Replacer) er
 	// https://github.com/caddyserver/caddy/issues/3443)
 	redirDomains := make(map[string][]caddy.NetworkAddress)
 
-	// the log configuration for an HTTPS enabled server
-	var logCfg *ServerLogConfig
-
 	for srvName, srv := range app.Servers {
 		// as a prerequisite, provision route matchers; this is
 		// required for all routes on all servers, and must be
@@ -175,13 +172,6 @@ func (app *App) automaticHTTPSPhase1(ctx caddy.Context, repl *caddy.Replacer) er
 			continue
 		}
 
-		// clone the logger so we can apply it to the HTTP server
-		// (not sure if necessary to clone it; but probably safer)
-		// (we choose one log cfg arbitrarily; not sure which is best)
-		if srv.Logs != nil {
-			logCfg = srv.Logs.clone()
-		}
-
 		// for all the hostnames we found, filter them so we have
 		// a deduplicated list of names for which to obtain certs
 		// (only if cert management not disabled for this server)
@@ -410,7 +400,6 @@ redirServersLoop:
 		app.Servers["remaining_auto_https_redirects"] = &Server{
 			Listen: redirServerAddrsList,
 			Routes: appendCatchAll(redirRoutes),
-			Logs:   logCfg,
 		}
 	}
 

modules/caddyhttp/caddyauth/basicauth.go

@@ -21,7 +21,6 @@ import (
 	"fmt"
 	weakrand "math/rand"
 	"net/http"
-	"strings"
 	"sync"
 	"time"
 
@@ -95,7 +94,10 @@ func (hba *HTTPBasicAuth) Provision(ctx caddy.Context) error {
 
 	// if supported, generate a fake password we can compare against if needed
 	if hasher, ok := hba.Hash.(Hasher); ok {
-		hba.fakePassword = hasher.FakeHash()
+		hba.fakePassword, err = hasher.Hash([]byte("antitiming"), []byte("fakesalt"))
+		if err != nil {
+			return fmt.Errorf("generating anti-timing password hash: %v", err)
+		}
 	}
 
 	repl := caddy.NewReplacer()
@@ -115,19 +117,10 @@ func (hba *HTTPBasicAuth) Provision(ctx caddy.Context) error {
 			return fmt.Errorf("account %d: username and password are required", i)
 		}
 
-		// TODO: Remove support for redundantly-encoded b64-encoded hashes
-		// Passwords starting with '$' are likely in Modular Crypt Format,
-		// so we don't need to base64 decode them. But historically, we
-		// required redundant base64, so we try to decode it otherwise.
-		if strings.HasPrefix(acct.Password, "$") {
-			acct.password = []byte(acct.Password)
-		} else {
-			acct.password, err = base64.StdEncoding.DecodeString(acct.Password)
-			if err != nil {
-				return fmt.Errorf("base64-decoding password: %v", err)
-			}
+		acct.password, err = base64.StdEncoding.DecodeString(acct.Password)
+		if err != nil {
+			return fmt.Errorf("base64-decoding password: %v", err)
 		}
-
 		if acct.Salt != "" {
 			acct.salt, err = base64.StdEncoding.DecodeString(acct.Salt)
 			if err != nil {
@@ -278,11 +271,9 @@ type Comparer interface {
 // that require a salt). Hashing modules which implement
 // this interface can be used with the hash-password
 // subcommand as well as benefitting from anti-timing
-// features. A hasher also returns a fake hash which
-// can be used for timing side-channel mitigation.
+// features.
 type Hasher interface {
 	Hash(plaintext, salt []byte) ([]byte, error)
-	FakeHash() []byte
 }
 
 // Account contains a username, password, and salt (if applicable).

modules/caddyhttp/caddyauth/caddyauth.go

@@ -56,13 +56,13 @@ func (Authentication) CaddyModule() caddy.ModuleInfo {
 
 // Provision sets up a.
 func (a *Authentication) Provision(ctx caddy.Context) error {
-	a.logger = ctx.Logger()
+	a.logger = ctx.Logger(a)
 	a.Providers = make(map[string]Authenticator)
 	mods, err := ctx.LoadModule(a, "ProvidersRaw")
 	if err != nil {
 		return fmt.Errorf("loading authentication providers: %v", err)
 	}
-	for modName, modIface := range mods.(map[string]any) {
+	for modName, modIface := range mods.(map[string]interface{}) {
 		a.Providers[modName] = modIface.(Authenticator)
 	}
 	return nil

modules/caddyhttp/caddyauth/command.go

@@ -42,13 +42,11 @@ hash is written to stdout as a base64 string.
 Caddy is attached to a controlling tty, the plaintext will
 not be echoed.
 
---algorithm may be bcrypt or scrypt. If scrypt, the default
+--algorithm may be bcrypt or scrypt. If script, the default
 parameters are used.
 
 Use the --salt flag for algorithms which require a salt to
 be provided (scrypt).
-
-Note that scrypt is deprecated. Please use 'bcrypt' instead.
 `,
 		Flags: func() *flag.FlagSet {
 			fs := flag.NewFlagSet("hash-password", flag.ExitOnError)
@@ -114,16 +112,13 @@ func cmdHashPassword(fs caddycmd.Flags) (int, error) {
 	}
 
 	var hash []byte
-	var hashString string
 	switch algorithm {
 	case "bcrypt":
 		hash, err = BcryptHash{}.Hash(plaintext, nil)
-		hashString = string(hash)
 	case "scrypt":
 		def := ScryptHash{}
 		def.SetDefaults()
 		hash, err = def.Hash(plaintext, salt)
-		hashString = base64.StdEncoding.EncodeToString(hash)
 	default:
 		return caddy.ExitCodeFailedStartup, fmt.Errorf("unrecognized hash algorithm: %s", algorithm)
 	}
@@ -131,7 +126,9 @@ func cmdHashPassword(fs caddycmd.Flags) (int, error) {
 		return caddy.ExitCodeFailedStartup, err
 	}
 
-	fmt.Println(hashString)
+	hashBase64 := base64.StdEncoding.EncodeToString(hash)
+
+	fmt.Println(hashBase64)
 
 	return 0, nil
 }

modules/caddyhttp/caddyauth/hashes.go

@@ -16,7 +16,6 @@ package caddyauth
 
 import (
 	"crypto/subtle"
-	"encoding/base64"
 
 	"github.com/caddyserver/caddy/v2"
 	"golang.org/x/crypto/bcrypt"
@@ -56,16 +55,7 @@ func (BcryptHash) Hash(plaintext, _ []byte) ([]byte, error) {
 	return bcrypt.GenerateFromPassword(plaintext, 14)
 }
 
-// FakeHash returns a fake hash.
-func (BcryptHash) FakeHash() []byte {
-	// hashed with the following command:
-	// caddy hash-password --plaintext "antitiming" --algorithm "bcrypt"
-	return []byte("$2a$14$X3ulqf/iGxnf1k6oMZ.RZeJUoqI9PX2PM4rS5lkIKJXduLGXGPrt6")
-}
-
 // ScryptHash implements the scrypt KDF as a hash.
-//
-// DEPRECATED, please use 'bcrypt' instead.
 type ScryptHash struct {
 	// scrypt's N parameter. If unset or 0, a safe default is used.
 	N int `json:"N,omitempty"`
@@ -90,9 +80,8 @@ func (ScryptHash) CaddyModule() caddy.ModuleInfo {
 }
 
 // Provision sets up s.
-func (s *ScryptHash) Provision(ctx caddy.Context) error {
+func (s *ScryptHash) Provision(_ caddy.Context) error {
 	s.SetDefaults()
-	ctx.Logger().Warn("use of 'scrypt' is deprecated, please use 'bcrypt' instead")
 	return nil
 }
 
@@ -134,14 +123,6 @@ func (s ScryptHash) Hash(plaintext, salt []byte) ([]byte, error) {
 	return scrypt.Key(plaintext, salt, s.N, s.R, s.P, s.KeyLength)
 }
 
-// FakeHash returns a fake hash.
-func (ScryptHash) FakeHash() []byte {
-	// hashed with the following command:
-	// caddy hash-password --plaintext "antitiming" --salt "fakesalt" --algorithm "scrypt"
-	bytes, _ := base64.StdEncoding.DecodeString("kFbjiVemlwK/ZS0tS6/UQqEDeaNMigyCs48KEsGUse8=")
-	return bytes
-}
-
 func hashesMatch(pwdHash1, pwdHash2 []byte) bool {
 	return subtle.ConstantTimeCompare(pwdHash1, pwdHash2) == 1
 }

modules/caddyhttp/caddyhttp.go

@@ -20,7 +20,6 @@ import (
 	"io"
 	"net"
 	"net/http"
-	"path"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -245,40 +244,6 @@ func SanitizedPathJoin(root, reqPath string) string {
 	return path
 }
 
-// CleanPath cleans path p according to path.Clean(), but only
-// merges repeated slashes if collapseSlashes is true, and always
-// preserves trailing slashes.
-func CleanPath(p string, collapseSlashes bool) string {
-	if collapseSlashes {
-		return cleanPath(p)
-	}
-
-	// insert an invalid/impossible URI character into each two consecutive
-	// slashes to expand empty path segments; then clean the path as usual,
-	// and then remove the remaining temporary characters.
-	const tmpCh = 0xff
-	var sb strings.Builder
-	for i, ch := range p {
-		if ch == '/' && i > 0 && p[i-1] == '/' {
-			sb.WriteByte(tmpCh)
-		}
-		sb.WriteRune(ch)
-	}
-	halfCleaned := cleanPath(sb.String())
-	halfCleaned = strings.ReplaceAll(halfCleaned, string([]byte{tmpCh}), "")
-
-	return halfCleaned
-}
-
-// cleanPath does path.Clean(p) but preserves any trailing slash.
-func cleanPath(p string) string {
-	cleaned := path.Clean(p)
-	if cleaned != "/" && strings.HasSuffix(p, "/") {
-		cleaned = cleaned + "/"
-	}
-	return cleaned
-}
-
 // tlsPlaceholderWrapper is a no-op listener wrapper that marks
 // where the TLS listener should be in a chain of listener wrappers.
 // It should only be used if another listener wrapper must be placed

modules/caddyhttp/caddyhttp_test.go

@@ -92,60 +92,3 @@ func TestSanitizedPathJoin(t *testing.T) {
 		}
 	}
 }
-
-func TestCleanPath(t *testing.T) {
-	for i, tc := range []struct {
-		input        string
-		mergeSlashes bool
-		expect       string
-	}{
-		{
-			input:  "/foo",
-			expect: "/foo",
-		},
-		{
-			input:  "/foo/",
-			expect: "/foo/",
-		},
-		{
-			input:  "//foo",
-			expect: "//foo",
-		},
-		{
-			input:        "//foo",
-			mergeSlashes: true,
-			expect:       "/foo",
-		},
-		{
-			input:        "/foo//bar/",
-			mergeSlashes: true,
-			expect:       "/foo/bar/",
-		},
-		{
-			input:  "/foo/./.././bar",
-			expect: "/bar",
-		},
-		{
-			input:  "/foo//./..//./bar",
-			expect: "/foo//bar",
-		},
-		{
-			input:  "/foo///./..//./bar",
-			expect: "/foo///bar",
-		},
-		{
-			input:  "/foo///./..//.",
-			expect: "/foo//",
-		},
-		{
-			input:  "/foo//./bar",
-			expect: "/foo//bar",
-		},
-	} {
-		actual := CleanPath(tc.input, tc.mergeSlashes)
-		if actual != tc.expect {
-			t.Errorf("Test %d [input='%s' mergeSlashes=%t]: Got '%s', expected '%s'",
-				i, tc.input, tc.mergeSlashes, actual, tc.expect)
-		}
-	}
-}

modules/caddyhttp/celmatcher.go

@@ -17,7 +17,6 @@ package caddyhttp
 import (
 	"crypto/x509/pkix"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"net/http"
 	"reflect"
@@ -28,17 +27,15 @@ import (
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/google/cel-go/cel"
-	"github.com/google/cel-go/common"
-	"github.com/google/cel-go/common/operators"
+	"github.com/google/cel-go/checker/decls"
 	"github.com/google/cel-go/common/types"
 	"github.com/google/cel-go/common/types/ref"
 	"github.com/google/cel-go/common/types/traits"
 	"github.com/google/cel-go/ext"
-	"github.com/google/cel-go/interpreter"
 	"github.com/google/cel-go/interpreter/functions"
-	"github.com/google/cel-go/parser"
 	"go.uber.org/zap"
 	exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
+	"google.golang.org/protobuf/proto"
 )
 
 func init() {
@@ -90,7 +87,7 @@ func (m *MatchExpression) UnmarshalJSON(data []byte) error {
 
 // Provision sets ups m.
 func (m *MatchExpression) Provision(ctx caddy.Context) error {
-	m.log = ctx.Logger()
+	m.log = ctx.Logger(m)
 
 	// replace placeholders with a function call - this is just some
 	// light (and possibly naïve) syntactic sugar
@@ -99,40 +96,17 @@ func (m *MatchExpression) Provision(ctx caddy.Context) error {
 	// our type adapter expands CEL's standard type support
 	m.ta = celTypeAdapter{}
 
-	// initialize the CEL libraries from the Matcher implementations which
-	// have been configured to support CEL.
-	matcherLibProducers := []CELLibraryProducer{}
-	for _, info := range caddy.GetModules("http.matchers") {
-		p, ok := info.New().(CELLibraryProducer)
-		if ok {
-			matcherLibProducers = append(matcherLibProducers, p)
-		}
-	}
-	// Assemble the compilation and program options from the different library
-	// producers into a single cel.Library implementation.
-	matcherEnvOpts := []cel.EnvOption{}
-	matcherProgramOpts := []cel.ProgramOption{}
-	for _, producer := range matcherLibProducers {
-		l, err := producer.CELLibrary(ctx)
-		if err != nil {
-			return fmt.Errorf("error initializing CEL library for %T: %v", producer, err)
-		}
-		matcherEnvOpts = append(matcherEnvOpts, l.CompileOptions()...)
-		matcherProgramOpts = append(matcherProgramOpts, l.ProgramOptions()...)
-	}
-	matcherLib := cel.Lib(NewMatcherCELLibrary(matcherEnvOpts, matcherProgramOpts))
-
 	// create the CEL environment
 	env, err := cel.NewEnv(
-		cel.Function(placeholderFuncName, cel.SingletonBinaryImpl(m.caddyPlaceholderFunc), cel.Overload(
-			placeholderFuncName+"_httpRequest_string",
-			[]*cel.Type{httpRequestObjectType, cel.StringType},
-			cel.AnyType,
-		)),
-		cel.Variable("request", httpRequestObjectType),
+		cel.Declarations(
+			decls.NewVar("request", httpRequestObjectType),
+			decls.NewFunction(placeholderFuncName,
+				decls.NewOverload(placeholderFuncName+"_httpRequest_string",
+					[]*exprpb.Type{httpRequestObjectType, decls.String},
+					decls.Any)),
+		),
 		cel.CustomTypeAdapter(m.ta),
 		ext.Strings(),
-		matcherLib,
 	)
 	if err != nil {
 		return fmt.Errorf("setting up CEL environment: %v", err)
@@ -140,18 +114,26 @@ func (m *MatchExpression) Provision(ctx caddy.Context) error {
 
 	// parse and type-check the expression
 	checked, issues := env.Compile(m.expandedExpr)
-	if issues.Err() != nil {
+	if issues != nil && issues.Err() != nil {
 		return fmt.Errorf("compiling CEL program: %s", issues.Err())
 	}
 
 	// request matching is a boolean operation, so we don't really know
 	// what to do if the expression returns a non-boolean type
-	if checked.OutputType() != cel.BoolType {
-		return fmt.Errorf("CEL request matcher expects return type of bool, not %s", checked.OutputType())
+	if !proto.Equal(checked.ResultType(), decls.Bool) {
+		return fmt.Errorf("CEL request matcher expects return type of bool, not %s", checked.ResultType())
 	}
 
 	// compile the "program"
-	m.prg, err = env.Program(checked, cel.EvalOptions(cel.OptOptimize))
+	m.prg, err = env.Program(checked,
+		cel.Functions(
+			&functions.Overload{
+				Operator: placeholderFuncName,
+				Binary:   m.caddyPlaceholderFunc,
+			},
+		),
+	)
+
 	if err != nil {
 		return fmt.Errorf("compiling CEL program: %s", err)
 	}
@@ -160,17 +142,18 @@ func (m *MatchExpression) Provision(ctx caddy.Context) error {
 
 // Match returns true if r matches m.
 func (m MatchExpression) Match(r *http.Request) bool {
-	celReq := celHTTPRequest{r}
-	out, _, err := m.prg.Eval(celReq)
+	out, _, err := m.prg.Eval(map[string]interface{}{
+		"request": celHTTPRequest{r},
+	})
 	if err != nil {
 		m.log.Error("evaluating expression", zap.Error(err))
-		SetVar(r.Context(), MatcherErrorVarKey, err)
 		return false
 	}
 	if outBool, ok := out.Value().(bool); ok {
 		return outBool
 	}
 	return false
+
 }
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
@@ -192,15 +175,13 @@ func (m MatchExpression) caddyPlaceholderFunc(lhs, rhs ref.Val) ref.Val {
 	if !ok {
 		return types.NewErr(
 			"invalid request of type '%v' to "+placeholderFuncName+"(request, placeholderVarName)",
-			lhs.Type(),
-		)
+			lhs.Type())
 	}
 	phStr, ok := rhs.(types.String)
 	if !ok {
 		return types.NewErr(
 			"invalid placeholder variable name of type '%v' to "+placeholderFuncName+"(request, placeholderVarName)",
-			rhs.Type(),
-		)
+			rhs.Type())
 	}
 
 	repl := celReq.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
@@ -212,24 +193,11 @@ func (m MatchExpression) caddyPlaceholderFunc(lhs, rhs ref.Val) ref.Val {
 // httpRequestCELType is the type representation of a native HTTP request.
 var httpRequestCELType = types.NewTypeValue("http.Request", traits.ReceiverType)
 
-// celHTTPRequest wraps an http.Request with ref.Val interface methods.
-//
-// This type also implements the interpreter.Activation interface which
-// drops allocation costs for CEL expression evaluations by roughly half.
+// cellHTTPRequest wraps an http.Request with
+// methods to satisfy the ref.Val interface.
 type celHTTPRequest struct{ *http.Request }
 
-func (cr celHTTPRequest) ResolveName(name string) (any, bool) {
-	if name == "request" {
-		return cr, true
-	}
-	return nil, false
-}
-
-func (cr celHTTPRequest) Parent() interpreter.Activation {
-	return nil
-}
-
-func (cr celHTTPRequest) ConvertToNative(typeDesc reflect.Type) (any, error) {
+func (cr celHTTPRequest) ConvertToNative(typeDesc reflect.Type) (interface{}, error) {
 	return cr.Request, nil
 }
 func (celHTTPRequest) ConvertToType(typeVal ref.Type) ref.Val {
@@ -241,8 +209,8 @@ func (cr celHTTPRequest) Equal(other ref.Val) ref.Val {
 	}
 	return types.ValOrErr(other, "%v is not comparable type", other)
 }
-func (celHTTPRequest) Type() ref.Type { return httpRequestCELType }
-func (cr celHTTPRequest) Value() any  { return cr }
+func (celHTTPRequest) Type() ref.Type        { return httpRequestCELType }
+func (cr celHTTPRequest) Value() interface{} { return cr }
 
 var pkixNameCELType = types.NewTypeValue("pkix.Name", traits.ReceiverType)
 
@@ -250,7 +218,7 @@ var pkixNameCELType = types.NewTypeValue("pkix.Name", traits.ReceiverType)
 // methods to satisfy the ref.Val interface.
 type celPkixName struct{ *pkix.Name }
 
-func (pn celPkixName) ConvertToNative(typeDesc reflect.Type) (any, error) {
+func (pn celPkixName) ConvertToNative(typeDesc reflect.Type) (interface{}, error) {
 	return pn.Name, nil
 }
 func (celPkixName) ConvertToType(typeVal ref.Type) ref.Val {
@@ -262,13 +230,13 @@ func (pn celPkixName) Equal(other ref.Val) ref.Val {
 	}
 	return types.ValOrErr(other, "%v is not comparable type", other)
 }
-func (celPkixName) Type() ref.Type { return pkixNameCELType }
-func (pn celPkixName) Value() any  { return pn }
+func (celPkixName) Type() ref.Type        { return pkixNameCELType }
+func (pn celPkixName) Value() interface{} { return pn }
 
 // celTypeAdapter can adapt our custom types to a CEL value.
 type celTypeAdapter struct{}
 
-func (celTypeAdapter) NativeToValue(value any) ref.Val {
+func (celTypeAdapter) NativeToValue(value interface{}) ref.Val {
 	switch v := value.(type) {
 	case celHTTPRequest:
 		return v
@@ -282,385 +250,15 @@ func (celTypeAdapter) NativeToValue(value any) ref.Val {
 	return types.DefaultTypeAdapter.NativeToValue(value)
 }
 
-// CELLibraryProducer provide CEL libraries that expose a Matcher
-// implementation as a first class function within the CEL expression
-// matcher.
-type CELLibraryProducer interface {
-	// CELLibrary creates a cel.Library which makes it possible to use the
-	// target object within CEL expression matchers.
-	CELLibrary(caddy.Context) (cel.Library, error)
-}
-
-// CELMatcherImpl creates a new cel.Library based on the following pieces of
-// data:
-//
-//   - macroName: the function name to be used within CEL. This will be a macro
-//     and not a function proper.
-//   - funcName: the function overload name generated by the CEL macro used to
-//     represent the matcher.
-//   - matcherDataTypes: the argument types to the macro.
-//   - fac: a matcherFactory implementation which converts from CEL constant
-//     values to a Matcher instance.
-//
-// Note, macro names and function names must not collide with other macros or
-// functions exposed within CEL expressions, or an error will be produced
-// during the expression matcher plan time.
-//
-// The existing CELMatcherImpl support methods are configured to support a
-// limited set of function signatures. For strong type validation you may need
-// to provide a custom macro which does a more detailed analysis of the CEL
-// literal provided to the macro as an argument.
-func CELMatcherImpl(macroName, funcName string, matcherDataTypes []*cel.Type, fac CELMatcherFactory) (cel.Library, error) {
-	requestType := cel.ObjectType("http.Request")
-	var macro parser.Macro
-	switch len(matcherDataTypes) {
-	case 1:
-		matcherDataType := matcherDataTypes[0]
-		switch matcherDataType.String() {
-		case "list(string)":
-			macro = parser.NewGlobalVarArgMacro(macroName, celMatcherStringListMacroExpander(funcName))
-		case cel.StringType.String():
-			macro = parser.NewGlobalMacro(macroName, 1, celMatcherStringMacroExpander(funcName))
-		case CELTypeJSON.String():
-			macro = parser.NewGlobalMacro(macroName, 1, celMatcherJSONMacroExpander(funcName))
-		default:
-			return nil, fmt.Errorf("unsupported matcher data type: %s", matcherDataType)
-		}
-	case 2:
-		if matcherDataTypes[0] == cel.StringType && matcherDataTypes[1] == cel.StringType {
-			macro = parser.NewGlobalMacro(macroName, 2, celMatcherStringListMacroExpander(funcName))
-			matcherDataTypes = []*cel.Type{cel.ListType(cel.StringType)}
-		} else {
-			return nil, fmt.Errorf("unsupported matcher data type: %s, %s", matcherDataTypes[0], matcherDataTypes[1])
-		}
-	case 3:
-		if matcherDataTypes[0] == cel.StringType && matcherDataTypes[1] == cel.StringType && matcherDataTypes[2] == cel.StringType {
-			macro = parser.NewGlobalMacro(macroName, 3, celMatcherStringListMacroExpander(funcName))
-			matcherDataTypes = []*cel.Type{cel.ListType(cel.StringType)}
-		} else {
-			return nil, fmt.Errorf("unsupported matcher data type: %s, %s, %s", matcherDataTypes[0], matcherDataTypes[1], matcherDataTypes[2])
-		}
-	}
-	envOptions := []cel.EnvOption{
-		cel.Macros(macro),
-		cel.Function(funcName,
-			cel.Overload(funcName, append([]*cel.Type{requestType}, matcherDataTypes...), cel.BoolType),
-			cel.SingletonBinaryImpl(CELMatcherRuntimeFunction(funcName, fac))),
-	}
-	programOptions := []cel.ProgramOption{
-		cel.CustomDecorator(CELMatcherDecorator(funcName, fac)),
-	}
-	return NewMatcherCELLibrary(envOptions, programOptions), nil
-}
-
-// CELMatcherFactory converts a constant CEL value into a RequestMatcher.
-type CELMatcherFactory func(data ref.Val) (RequestMatcher, error)
-
-// matcherCELLibrary is a simplistic configurable cel.Library implementation.
-type matcherCELLibary struct {
-	envOptions     []cel.EnvOption
-	programOptions []cel.ProgramOption
-}
-
-// NewMatcherCELLibrary creates a matcherLibrary from option setes.
-func NewMatcherCELLibrary(envOptions []cel.EnvOption, programOptions []cel.ProgramOption) cel.Library {
-	return &matcherCELLibary{
-		envOptions:     envOptions,
-		programOptions: programOptions,
-	}
-}
-
-func (lib *matcherCELLibary) CompileOptions() []cel.EnvOption {
-	return lib.envOptions
-}
-
-func (lib *matcherCELLibary) ProgramOptions() []cel.ProgramOption {
-	return lib.programOptions
-}
-
-// CELMatcherDecorator matches a call overload generated by a CEL macro
-// that takes a single argument, and optimizes the implementation to precompile
-// the matcher and return a function that references the precompiled and
-// provisioned matcher.
-func CELMatcherDecorator(funcName string, fac CELMatcherFactory) interpreter.InterpretableDecorator {
-	return func(i interpreter.Interpretable) (interpreter.Interpretable, error) {
-		call, ok := i.(interpreter.InterpretableCall)
-		if !ok {
-			return i, nil
-		}
-		if call.OverloadID() != funcName {
-			return i, nil
-		}
-		callArgs := call.Args()
-		reqAttr, ok := callArgs[0].(interpreter.InterpretableAttribute)
-		if !ok {
-			return nil, errors.New("missing 'request' argument")
-		}
-		nsAttr, ok := reqAttr.Attr().(interpreter.NamespacedAttribute)
-		if !ok {
-			return nil, errors.New("missing 'request' argument")
-		}
-		varNames := nsAttr.CandidateVariableNames()
-		if len(varNames) != 1 || len(varNames) == 1 && varNames[0] != "request" {
-			return nil, errors.New("missing 'request' argument")
-		}
-		matcherData, ok := callArgs[1].(interpreter.InterpretableConst)
-		if !ok {
-			// If the matcher arguments are not constant, then this means
-			// they contain a Caddy placeholder reference and the evaluation
-			// and matcher provisioning should be handled at dynamically.
-			return i, nil
-		}
-		matcher, err := fac(matcherData.Value())
-		if err != nil {
-			return nil, err
-		}
-		return interpreter.NewCall(
-			i.ID(), funcName, funcName+"_opt",
-			[]interpreter.Interpretable{reqAttr},
-			func(args ...ref.Val) ref.Val {
-				// The request value, guaranteed to be of type celHTTPRequest
-				celReq := args[0]
-				// If needed this call could be changed to convert the value
-				// to a *http.Request using CEL's ConvertToNative method.
-				httpReq := celReq.Value().(celHTTPRequest)
-				return types.Bool(matcher.Match(httpReq.Request))
-			},
-		), nil
-	}
-}
-
-// CELMatcherRuntimeFunction creates a function binding for when the input to the matcher
-// is dynamically resolved rather than a set of static constant values.
-func CELMatcherRuntimeFunction(funcName string, fac CELMatcherFactory) functions.BinaryOp {
-	return func(celReq, matcherData ref.Val) ref.Val {
-		matcher, err := fac(matcherData)
-		if err != nil {
-			return types.NewErr(err.Error())
-		}
-		httpReq := celReq.Value().(celHTTPRequest)
-		return types.Bool(matcher.Match(httpReq.Request))
-	}
-}
-
-// celMatcherStringListMacroExpander validates that the macro is called
-// with a variable number of string arguments (at least one).
-//
-// The arguments are collected into a single list argument the following
-// function call returned: <funcName>(request, [args])
-func celMatcherStringListMacroExpander(funcName string) parser.MacroExpander {
-	return func(eh parser.ExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *common.Error) {
-		matchArgs := []*exprpb.Expr{}
-		if len(args) == 0 {
-			return nil, &common.Error{
-				Message: "matcher requires at least one argument",
-			}
-		}
-		for _, arg := range args {
-			if isCELStringExpr(arg) {
-				matchArgs = append(matchArgs, arg)
-			} else {
-				return nil, &common.Error{
-					Location: eh.OffsetLocation(arg.GetId()),
-					Message:  "matcher arguments must be string constants",
-				}
-			}
-		}
-		return eh.GlobalCall(funcName, eh.Ident("request"), eh.NewList(matchArgs...)), nil
-	}
-}
-
-// celMatcherStringMacroExpander validates that the macro is called a single
-// string argument.
-//
-// The following function call is returned: <funcName>(request, arg)
-func celMatcherStringMacroExpander(funcName string) parser.MacroExpander {
-	return func(eh parser.ExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *common.Error) {
-		if len(args) != 1 {
-			return nil, &common.Error{
-				Message: "matcher requires one argument",
-			}
-		}
-		if isCELStringExpr(args[0]) {
-			return eh.GlobalCall(funcName, eh.Ident("request"), args[0]), nil
-		}
-		return nil, &common.Error{
-			Location: eh.OffsetLocation(args[0].GetId()),
-			Message:  "matcher argument must be a string literal",
-		}
-	}
-}
-
-// celMatcherStringMacroExpander validates that the macro is called a single
-// map literal argument.
-//
-// The following function call is returned: <funcName>(request, arg)
-func celMatcherJSONMacroExpander(funcName string) parser.MacroExpander {
-	return func(eh parser.ExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *common.Error) {
-		if len(args) != 1 {
-			return nil, &common.Error{
-				Message: "matcher requires a map literal argument",
-			}
-		}
-		arg := args[0]
-		switch arg.GetExprKind().(type) {
-		case *exprpb.Expr_StructExpr:
-			structExpr := arg.GetStructExpr()
-			if structExpr.GetMessageName() != "" {
-				return nil, &common.Error{
-					Location: eh.OffsetLocation(arg.GetId()),
-					Message: fmt.Sprintf(
-						"matcher input must be a map literal, not a %s",
-						structExpr.GetMessageName(),
-					),
-				}
-			}
-			for _, entry := range structExpr.GetEntries() {
-				isStringPlaceholder := isCELStringExpr(entry.GetMapKey())
-				if !isStringPlaceholder {
-					return nil, &common.Error{
-						Location: eh.OffsetLocation(entry.GetId()),
-						Message:  "matcher map keys must be string literals",
-					}
-				}
-				isStringListPlaceholder := isCELStringExpr(entry.GetValue()) ||
-					isCELStringListLiteral(entry.GetValue())
-				if !isStringListPlaceholder {
-					return nil, &common.Error{
-						Location: eh.OffsetLocation(entry.GetValue().GetId()),
-						Message:  "matcher map values must be string or list literals",
-					}
-				}
-			}
-			return eh.GlobalCall(funcName, eh.Ident("request"), arg), nil
-		}
-
-		return nil, &common.Error{
-			Location: eh.OffsetLocation(arg.GetId()),
-			Message:  "matcher requires a map literal argument",
-		}
-	}
-}
-
-// CELValueToMapStrList converts a CEL value to a map[string][]string
-//
-// Earlier validation stages should guarantee that the value has this type
-// at compile time, and that the runtime value type is map[string]any.
-// The reason for the slight difference in value type is that CEL allows for
-// map literals containing heterogeneous values, in this case string and list
-// of string.
-func CELValueToMapStrList(data ref.Val) (map[string][]string, error) {
-	mapStrType := reflect.TypeOf(map[string]any{})
-	mapStrRaw, err := data.ConvertToNative(mapStrType)
-	if err != nil {
-		return nil, err
-	}
-	mapStrIface := mapStrRaw.(map[string]any)
-	mapStrListStr := make(map[string][]string, len(mapStrIface))
-	for k, v := range mapStrIface {
-		switch val := v.(type) {
-		case string:
-			mapStrListStr[k] = []string{val}
-		case types.String:
-			mapStrListStr[k] = []string{string(val)}
-		case []string:
-			mapStrListStr[k] = val
-		case []ref.Val:
-			convVals := make([]string, len(val))
-			for i, elem := range val {
-				strVal, ok := elem.(types.String)
-				if !ok {
-					return nil, fmt.Errorf("unsupported value type in header match: %T", val)
-				}
-				convVals[i] = string(strVal)
-			}
-			mapStrListStr[k] = convVals
-		default:
-			return nil, fmt.Errorf("unsupported value type in header match: %T", val)
-		}
-	}
-	return mapStrListStr, nil
-}
-
-// isCELStringExpr indicates whether the expression is a supported string expression
-func isCELStringExpr(e *exprpb.Expr) bool {
-	return isCELStringLiteral(e) || isCELCaddyPlaceholderCall(e) || isCELConcatCall(e)
-}
-
-// isCELStringLiteral returns whether the expression is a CEL string literal.
-func isCELStringLiteral(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_ConstExpr:
-		constant := e.GetConstExpr()
-		switch constant.GetConstantKind().(type) {
-		case *exprpb.Constant_StringValue:
-			return true
-		}
-	}
-	return false
-}
-
-// isCELCaddyPlaceholderCall returns whether the expression is a caddy placeholder call.
-func isCELCaddyPlaceholderCall(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_CallExpr:
-		call := e.GetCallExpr()
-		if call.GetFunction() == "caddyPlaceholder" {
-			return true
-		}
-	}
-	return false
-}
-
-// isCELConcatCall tests whether the expression is a concat function (+) with string, placeholder, or
-// other concat call arguments.
-func isCELConcatCall(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_CallExpr:
-		call := e.GetCallExpr()
-		if call.GetTarget() != nil {
-			return false
-		}
-		if call.GetFunction() != operators.Add {
-			return false
-		}
-		for _, arg := range call.GetArgs() {
-			if !isCELStringExpr(arg) {
-				return false
-			}
-		}
-		return true
-	}
-	return false
-}
-
-// isCELStringListLiteral returns whether the expression resolves to a list literal
-// containing only string constants or a placeholder call.
-func isCELStringListLiteral(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_ListExpr:
-		list := e.GetListExpr()
-		for _, elem := range list.GetElements() {
-			if !isCELStringExpr(elem) {
-				return false
-			}
-		}
-		return true
-	}
-	return false
-}
-
 // Variables used for replacing Caddy placeholders in CEL
 // expressions with a proper CEL function call; this is
 // just for syntactic sugar.
 var (
-	placeholderRegexp    = regexp.MustCompile(`{([a-zA-Z][\w.-]+)}`)
+	placeholderRegexp    = regexp.MustCompile(`{([\w.-]+)}`)
 	placeholderExpansion = `caddyPlaceholder(request, "${1}")`
-
-	CELTypeJSON = cel.MapType(cel.StringType, cel.DynType)
 )
 
-var httpRequestObjectType = cel.ObjectType("http.Request")
+var httpRequestObjectType = decls.NewObjectType("http.Request")
 
 // The name of the CEL function which accesses Replacer values.
 const placeholderFuncName = "caddyPlaceholder"

modules/caddyhttp/celmatcher_test.go

@@ -19,462 +19,12 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"encoding/pem"
-	"net/http"
 	"net/http/httptest"
 	"testing"
 
 	"github.com/caddyserver/caddy/v2"
 )
 
-var (
-	clientCert = []byte(`-----BEGIN CERTIFICATE-----
-MIIB9jCCAV+gAwIBAgIBAjANBgkqhkiG9w0BAQsFADAYMRYwFAYDVQQDDA1DYWRk
-eSBUZXN0IENBMB4XDTE4MDcyNDIxMzUwNVoXDTI4MDcyMTIxMzUwNVowHTEbMBkG
-A1UEAwwSY2xpZW50LmxvY2FsZG9tYWluMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCB
-iQKBgQDFDEpzF0ew68teT3xDzcUxVFaTII+jXH1ftHXxxP4BEYBU4q90qzeKFneF
-z83I0nC0WAQ45ZwHfhLMYHFzHPdxr6+jkvKPASf0J2v2HDJuTM1bHBbik5Ls5eq+
-fVZDP8o/VHKSBKxNs8Goc2NTsr5b07QTIpkRStQK+RJALk4x9QIDAQABo0swSTAJ
-BgNVHRMEAjAAMAsGA1UdDwQEAwIHgDAaBgNVHREEEzARgglsb2NhbGhvc3SHBH8A
-AAEwEwYDVR0lBAwwCgYIKwYBBQUHAwIwDQYJKoZIhvcNAQELBQADgYEANSjz2Sk+
-eqp31wM9il1n+guTNyxJd+FzVAH+hCZE5K+tCgVDdVFUlDEHHbS/wqb2PSIoouLV
-3Q9fgDkiUod+uIK0IynzIKvw+Cjg+3nx6NQ0IM0zo8c7v398RzB4apbXKZyeeqUH
-9fNwfEi+OoXR6s+upSKobCmLGLGi9Na5s5g=
------END CERTIFICATE-----`)
-
-	matcherTests = []struct {
-		name              string
-		expression        *MatchExpression
-		urlTarget         string
-		httpMethod        string
-		httpHeader        *http.Header
-		wantErr           bool
-		wantResult        bool
-		clientCertificate []byte
-	}{
-		{
-			name: "boolean matches succeed for placeholder http.request.tls.client.subject",
-			expression: &MatchExpression{
-				Expr: "{http.request.tls.client.subject} == 'CN=client.localdomain'",
-			},
-			clientCertificate: clientCert,
-			urlTarget:         "https://example.com/foo",
-			wantResult:        true,
-		},
-		{
-			name: "header matches (MatchHeader)",
-			expression: &MatchExpression{
-				Expr: `header({'Field': 'foo'})`,
-			},
-			urlTarget:  "https://example.com/foo",
-			httpHeader: &http.Header{"Field": []string{"foo", "bar"}},
-			wantResult: true,
-		},
-		{
-			name: "header error (MatchHeader)",
-			expression: &MatchExpression{
-				Expr: `header('foo')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			httpHeader: &http.Header{"Field": []string{"foo", "bar"}},
-			wantErr:    true,
-		},
-		{
-			name: "header_regexp matches (MatchHeaderRE)",
-			expression: &MatchExpression{
-				Expr: `header_regexp('Field', 'fo{2}')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			httpHeader: &http.Header{"Field": []string{"foo", "bar"}},
-			wantResult: true,
-		},
-		{
-			name: "header_regexp matches with name (MatchHeaderRE)",
-			expression: &MatchExpression{
-				Expr: `header_regexp('foo', 'Field', 'fo{2}')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			httpHeader: &http.Header{"Field": []string{"foo", "bar"}},
-			wantResult: true,
-		},
-		{
-			name: "header_regexp does not match (MatchHeaderRE)",
-			expression: &MatchExpression{
-				Expr: `header_regexp('foo', 'Nope', 'fo{2}')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			httpHeader: &http.Header{"Field": []string{"foo", "bar"}},
-			wantResult: false,
-		},
-		{
-			name: "header_regexp error (MatchHeaderRE)",
-			expression: &MatchExpression{
-				Expr: `header_regexp('foo')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			httpHeader: &http.Header{"Field": []string{"foo", "bar"}},
-			wantErr:    true,
-		},
-		{
-			name: "host matches localhost (MatchHost)",
-			expression: &MatchExpression{
-				Expr: `host('localhost')`,
-			},
-			urlTarget:  "http://localhost",
-			wantResult: true,
-		},
-		{
-			name: "host matches (MatchHost)",
-			expression: &MatchExpression{
-				Expr: `host('*.example.com')`,
-			},
-			urlTarget:  "https://foo.example.com",
-			wantResult: true,
-		},
-		{
-			name: "host does not match (MatchHost)",
-			expression: &MatchExpression{
-				Expr: `host('example.net', '*.example.com')`,
-			},
-			urlTarget:  "https://foo.example.org",
-			wantResult: false,
-		},
-		{
-			name: "host error (MatchHost)",
-			expression: &MatchExpression{
-				Expr: `host(80)`,
-			},
-			urlTarget: "http://localhost:80",
-			wantErr:   true,
-		},
-		{
-			name: "method does not match (MatchMethod)",
-			expression: &MatchExpression{
-				Expr: `method('PUT')`,
-			},
-			urlTarget:  "https://foo.example.com",
-			httpMethod: "GET",
-			wantResult: false,
-		},
-		{
-			name: "method matches (MatchMethod)",
-			expression: &MatchExpression{
-				Expr: `method('DELETE', 'PUT', 'POST')`,
-			},
-			urlTarget:  "https://foo.example.com",
-			httpMethod: "PUT",
-			wantResult: true,
-		},
-		{
-			name: "method error not enough arguments (MatchMethod)",
-			expression: &MatchExpression{
-				Expr: `method()`,
-			},
-			urlTarget:  "https://foo.example.com",
-			httpMethod: "PUT",
-			wantErr:    true,
-		},
-		{
-			name: "path matches substring (MatchPath)",
-			expression: &MatchExpression{
-				Expr: `path('*substring*')`,
-			},
-			urlTarget:  "https://example.com/foo/substring/bar.txt",
-			wantResult: true,
-		},
-		{
-			name: "path does not match (MatchPath)",
-			expression: &MatchExpression{
-				Expr: `path('/foo')`,
-			},
-			urlTarget:  "https://example.com/foo/bar",
-			wantResult: false,
-		},
-		{
-			name: "path matches end url fragment (MatchPath)",
-			expression: &MatchExpression{
-				Expr: `path('/foo')`,
-			},
-			urlTarget:  "https://example.com/FOO",
-			wantResult: true,
-		},
-		{
-			name: "path matches end fragment with substring prefix (MatchPath)",
-			expression: &MatchExpression{
-				Expr: `path('/foo*')`,
-			},
-			urlTarget:  "https://example.com/FOOOOO",
-			wantResult: true,
-		},
-		{
-			name: "path matches one of multiple (MatchPath)",
-			expression: &MatchExpression{
-				Expr: `path('/foo', '/foo/*', '/bar', '/bar/*', '/baz', '/baz*')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			wantResult: true,
-		},
-		{
-			name: "path_regexp with empty regex matches empty path (MatchPathRE)",
-			expression: &MatchExpression{
-				Expr: `path_regexp('')`,
-			},
-			urlTarget:  "https://example.com/",
-			wantResult: true,
-		},
-		{
-			name: "path_regexp with slash regex matches empty path (MatchPathRE)",
-			expression: &MatchExpression{
-				Expr: `path_regexp('/')`,
-			},
-			urlTarget:  "https://example.com/",
-			wantResult: true,
-		},
-		{
-			name: "path_regexp matches end url fragment (MatchPathRE)",
-			expression: &MatchExpression{
-				Expr: `path_regexp('^/foo')`,
-			},
-			urlTarget:  "https://example.com/foo/",
-			wantResult: true,
-		},
-		{
-			name: "path_regexp does not match fragment at end (MatchPathRE)",
-			expression: &MatchExpression{
-				Expr: `path_regexp('bar_at_start', '^/bar')`,
-			},
-			urlTarget:  "https://example.com/foo/bar",
-			wantResult: false,
-		},
-		{
-			name: "protocol matches (MatchProtocol)",
-			expression: &MatchExpression{
-				Expr: `protocol('HTTPs')`,
-			},
-			urlTarget:  "https://example.com",
-			wantResult: true,
-		},
-		{
-			name: "protocol does not match (MatchProtocol)",
-			expression: &MatchExpression{
-				Expr: `protocol('grpc')`,
-			},
-			urlTarget:  "https://example.com",
-			wantResult: false,
-		},
-		{
-			name: "protocol invocation error no args (MatchProtocol)",
-			expression: &MatchExpression{
-				Expr: `protocol()`,
-			},
-			urlTarget: "https://example.com",
-			wantErr:   true,
-		},
-		{
-			name: "protocol invocation error too many args (MatchProtocol)",
-			expression: &MatchExpression{
-				Expr: `protocol('grpc', 'https')`,
-			},
-			urlTarget: "https://example.com",
-			wantErr:   true,
-		},
-		{
-			name: "protocol invocation error wrong arg type (MatchProtocol)",
-			expression: &MatchExpression{
-				Expr: `protocol(true)`,
-			},
-			urlTarget: "https://example.com",
-			wantErr:   true,
-		},
-		{
-			name: "query does not match against a specific value (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({"debug": "1"})`,
-			},
-			urlTarget:  "https://example.com/foo",
-			wantResult: false,
-		},
-		{
-			name: "query matches against a specific value (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({"debug": "1"})`,
-			},
-			urlTarget:  "https://example.com/foo/?debug=1",
-			wantResult: true,
-		},
-		{
-			name: "query matches against multiple values (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({"debug": ["0", "1", {http.request.uri.query.debug}+"1"]})`,
-			},
-			urlTarget:  "https://example.com/foo/?debug=1",
-			wantResult: true,
-		},
-		{
-			name: "query matches against a wildcard (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({"debug": ["*"]})`,
-			},
-			urlTarget:  "https://example.com/foo/?debug=something",
-			wantResult: true,
-		},
-		{
-			name: "query matches against a placeholder value (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({"debug": {http.request.uri.query.debug}})`,
-			},
-			urlTarget:  "https://example.com/foo/?debug=1",
-			wantResult: true,
-		},
-		{
-			name: "query error bad map key type (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({1: "1"})`,
-			},
-			urlTarget: "https://example.com/foo",
-			wantErr:   true,
-		},
-		{
-			name: "query error typed struct instead of map (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query(Message{field: "1"})`,
-			},
-			urlTarget: "https://example.com/foo",
-			wantErr:   true,
-		},
-		{
-			name: "query error bad map value type (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query({"debug": 1})`,
-			},
-			urlTarget: "https://example.com/foo/?debug=1",
-			wantErr:   true,
-		},
-		{
-			name: "query error no args (MatchQuery)",
-			expression: &MatchExpression{
-				Expr: `query()`,
-			},
-			urlTarget: "https://example.com/foo/?debug=1",
-			wantErr:   true,
-		},
-		{
-			name: "remote_ip error no args (MatchRemoteIP)",
-			expression: &MatchExpression{
-				Expr: `remote_ip()`,
-			},
-			urlTarget: "https://example.com/foo",
-			wantErr:   true,
-		},
-		{
-			name: "remote_ip single IP match (MatchRemoteIP)",
-			expression: &MatchExpression{
-				Expr: `remote_ip('192.0.2.1')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			wantResult: true,
-		},
-		{
-			name: "remote_ip forwarded (MatchRemoteIP)",
-			expression: &MatchExpression{
-				Expr: `remote_ip('forwarded', '192.0.2.1')`,
-			},
-			urlTarget:  "https://example.com/foo",
-			wantResult: true,
-		},
-		{
-			name: "remote_ip forwarded not first (MatchRemoteIP)",
-			expression: &MatchExpression{
-				Expr: `remote_ip('192.0.2.1', 'forwarded')`,
-			},
-			urlTarget: "https://example.com/foo",
-			wantErr:   true,
-		},
-	}
-)
-
-func TestMatchExpressionMatch(t *testing.T) {
-	for _, tst := range matcherTests {
-		tc := tst
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.expression.Provision(caddy.Context{})
-			if err != nil {
-				if !tc.wantErr {
-					t.Errorf("MatchExpression.Provision() error = %v, wantErr %v", err, tc.wantErr)
-				}
-				return
-			}
-
-			req := httptest.NewRequest(tc.httpMethod, tc.urlTarget, nil)
-			if tc.httpHeader != nil {
-				req.Header = *tc.httpHeader
-			}
-			repl := caddy.NewReplacer()
-			ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
-			req = req.WithContext(ctx)
-			addHTTPVarsToReplacer(repl, req, httptest.NewRecorder())
-
-			if tc.clientCertificate != nil {
-				block, _ := pem.Decode(clientCert)
-				if block == nil {
-					t.Fatalf("failed to decode PEM certificate")
-				}
-
-				cert, err := x509.ParseCertificate(block.Bytes)
-				if err != nil {
-					t.Fatalf("failed to decode PEM certificate: %v", err)
-				}
-
-				req.TLS = &tls.ConnectionState{
-					PeerCertificates: []*x509.Certificate{cert},
-				}
-			}
-
-			if tc.expression.Match(req) != tc.wantResult {
-				t.Errorf("MatchExpression.Match() expected to return '%t', for expression : '%s'", tc.wantResult, tc.expression.Expr)
-			}
-		})
-	}
-}
-
-func BenchmarkMatchExpressionMatch(b *testing.B) {
-	for _, tst := range matcherTests {
-		tc := tst
-		if tc.wantErr {
-			continue
-		}
-		b.Run(tst.name, func(b *testing.B) {
-			tc.expression.Provision(caddy.Context{})
-			req := httptest.NewRequest(tc.httpMethod, tc.urlTarget, nil)
-			if tc.httpHeader != nil {
-				req.Header = *tc.httpHeader
-			}
-			repl := caddy.NewReplacer()
-			ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
-			req = req.WithContext(ctx)
-			addHTTPVarsToReplacer(repl, req, httptest.NewRecorder())
-			if tc.clientCertificate != nil {
-				block, _ := pem.Decode(clientCert)
-				if block == nil {
-					b.Fatalf("failed to decode PEM certificate")
-				}
-
-				cert, err := x509.ParseCertificate(block.Bytes)
-				if err != nil {
-					b.Fatalf("failed to decode PEM certificate: %v", err)
-				}
-
-				req.TLS = &tls.ConnectionState{
-					PeerCertificates: []*x509.Certificate{cert},
-				}
-			}
-			b.ResetTimer()
-			for i := 0; i < b.N; i++ {
-				tc.expression.Match(req)
-			}
-		})
-	}
-}
-
 func TestMatchExpressionProvision(t *testing.T) {
 	tests := []struct {
 		name       string
@@ -504,3 +54,71 @@ func TestMatchExpressionProvision(t *testing.T) {
 		})
 	}
 }
+
+func TestMatchExpressionMatch(t *testing.T) {
+
+	clientCert := []byte(`-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----`)
+
+	tests := []struct {
+		name              string
+		expression        *MatchExpression
+		wantErr           bool
+		wantResult        bool
+		clientCertificate []byte
+	}{
+		{
+			name: "boolean matches succeed for placeholder http.request.tls.client.subject",
+			expression: &MatchExpression{
+				Expr: "{http.request.tls.client.subject} == 'CN=client.localdomain'",
+			},
+			clientCertificate: clientCert,
+			wantResult:        true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := tt.expression.Provision(caddy.Context{}); (err != nil) != tt.wantErr {
+				t.Errorf("MatchExpression.Provision() error = %v, wantErr %v", err, tt.wantErr)
+			}
+
+			req := httptest.NewRequest("GET", "https://example.com/foo", nil)
+			repl := caddy.NewReplacer()
+			ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
+			req = req.WithContext(ctx)
+			addHTTPVarsToReplacer(repl, req, httptest.NewRecorder())
+
+			if tt.clientCertificate != nil {
+				block, _ := pem.Decode(clientCert)
+				if block == nil {
+					t.Fatalf("failed to decode PEM certificate")
+				}
+
+				cert, err := x509.ParseCertificate(block.Bytes)
+				if err != nil {
+					t.Fatalf("failed to decode PEM certificate: %v", err)
+				}
+
+				req.TLS = &tls.ConnectionState{
+					PeerCertificates: []*x509.Certificate{cert},
+				}
+			}
+
+			if tt.expression.Match(req) != tt.wantResult {
+				t.Errorf("MatchExpression.Match() expected to return '%t', for expression : '%s'", tt.wantResult, tt.expression.Expr)
+			}
+
+		})
+	}
+}

modules/caddyhttp/encode/encode.go

@@ -20,6 +20,7 @@
 package encode
 
 import (
+	"bytes"
 	"fmt"
 	"io"
 	"math"
@@ -70,7 +71,7 @@ func (enc *Encode) Provision(ctx caddy.Context) error {
 	if err != nil {
 		return fmt.Errorf("loading encoder modules: %v", err)
 	}
-	for modName, modIface := range mods.(map[string]any) {
+	for modName, modIface := range mods.(map[string]interface{}) {
 		err = enc.addEncoding(modIface.(Encoding))
 		if err != nil {
 			return fmt.Errorf("adding encoding %s: %v", modName, err)
@@ -141,7 +142,7 @@ func (enc *Encode) addEncoding(e Encoding) error {
 		enc.writerPools = make(map[string]*sync.Pool)
 	}
 	enc.writerPools[ae] = &sync.Pool{
-		New: func() any {
+		New: func() interface{} {
 			return e.NewEncoder()
 		},
 	}
@@ -159,12 +160,13 @@ func (enc *Encode) openResponseWriter(encodingName string, w http.ResponseWriter
 // initResponseWriter initializes the responseWriter instance
 // allocated in openResponseWriter, enabling mid-stack inlining.
 func (enc *Encode) initResponseWriter(rw *responseWriter, encodingName string, wrappedRW http.ResponseWriter) *responseWriter {
-	if httpInterfaces, ok := wrappedRW.(caddyhttp.HTTPInterfaces); ok {
-		rw.HTTPInterfaces = httpInterfaces
-	} else {
-		rw.HTTPInterfaces = &caddyhttp.ResponseWriterWrapper{ResponseWriter: wrappedRW}
-	}
+	buf := bufPool.Get().(*bytes.Buffer)
+	buf.Reset()
+
+	// The allocation of ResponseWriterWrapper might be optimized as well.
+	rw.ResponseWriterWrapper = &caddyhttp.ResponseWriterWrapper{ResponseWriter: wrappedRW}
 	rw.encodingName = encodingName
+	rw.buf = buf
 	rw.config = enc
 
 	return rw
@@ -174,9 +176,10 @@ func (enc *Encode) initResponseWriter(rw *responseWriter, encodingName string, w
 // using the encoding represented by encodingName and
 // configured by config.
 type responseWriter struct {
-	caddyhttp.HTTPInterfaces
+	*caddyhttp.ResponseWriterWrapper
 	encodingName string
 	w            Encoder
+	buf          *bytes.Buffer
 	config       *Encode
 	statusCode   int
 	wroteHeader  bool
@@ -203,33 +206,28 @@ func (rw *responseWriter) Flush() {
 		// to rw.Write (see bug in #4314)
 		return
 	}
-	rw.HTTPInterfaces.Flush()
+	rw.ResponseWriterWrapper.Flush()
 }
 
 // Write writes to the response. If the response qualifies,
 // it is encoded using the encoder, which is initialized
 // if not done so already.
 func (rw *responseWriter) Write(p []byte) (int, error) {
-	// ignore zero data writes, probably head request
-	if len(p) == 0 {
-		return 0, nil
-	}
+	var n, written int
+	var err error
 
-	// sniff content-type and determine content-length
-	if !rw.wroteHeader && rw.config.MinLength > 0 {
-		var gtMinLength bool
-		if len(p) > rw.config.MinLength {
-			gtMinLength = true
-		} else if cl, err := strconv.Atoi(rw.Header().Get("Content-Length")); err == nil && cl > rw.config.MinLength {
-			gtMinLength = true
-		}
-
-		if gtMinLength {
-			if rw.Header().Get("Content-Type") == "" {
-				rw.Header().Set("Content-Type", http.DetectContentType(p))
-			}
-			rw.init()
+	if rw.buf != nil && rw.config.MinLength > 0 {
+		written = rw.buf.Len()
+		_, err := rw.buf.Write(p)
+		if err != nil {
+			return 0, err
 		}
+		rw.init()
+		p = rw.buf.Bytes()
+		defer func() {
+			bufPool.Put(rw.buf)
+			rw.buf = nil
+		}()
 	}
 
 	// before we write to the response, we need to make
@@ -238,44 +236,63 @@ func (rw *responseWriter) Write(p []byte) (int, error) {
 	// and if so, that means we haven't written the
 	// header OR the default status code will be written
 	// by the standard library
-	if !rw.wroteHeader {
-		if rw.statusCode != 0 {
-			rw.HTTPInterfaces.WriteHeader(rw.statusCode)
-		} else {
-			rw.HTTPInterfaces.WriteHeader(http.StatusOK)
-		}
+	if rw.statusCode > 0 {
+		rw.ResponseWriter.WriteHeader(rw.statusCode)
+		rw.statusCode = 0
 		rw.wroteHeader = true
 	}
 
-	if rw.w != nil {
-		return rw.w.Write(p)
-	} else {
-		return rw.HTTPInterfaces.Write(p)
+	switch {
+	case rw.w != nil:
+		n, err = rw.w.Write(p)
+	default:
+		n, err = rw.ResponseWriter.Write(p)
 	}
+	n -= written
+	if n < 0 {
+		n = 0
+	}
+	return n, err
 }
 
 // Close writes any remaining buffered response and
 // deallocates any active resources.
 func (rw *responseWriter) Close() error {
-	// didn't write, probably head request
-	if !rw.wroteHeader {
-		cl, err := strconv.Atoi(rw.Header().Get("Content-Length"))
-		if err == nil && cl > rw.config.MinLength {
-			rw.init()
-		}
-
-		if rw.statusCode != 0 {
-			rw.HTTPInterfaces.WriteHeader(rw.statusCode)
-		} else {
-			rw.HTTPInterfaces.WriteHeader(http.StatusOK)
+	var err error
+	// only attempt to write the remaining buffered response
+	// if there are any bytes left to write; otherwise, if
+	// the handler above us returned an error without writing
+	// anything, we'd write to the response when we instead
+	// should simply let the error propagate back down; this
+	// is why the check for rw.buf.Len() > 0 is crucial
+	if rw.buf != nil && rw.buf.Len() > 0 {
+		rw.init()
+		p := rw.buf.Bytes()
+		defer func() {
+			bufPool.Put(rw.buf)
+			rw.buf = nil
+		}()
+		switch {
+		case rw.w != nil:
+			_, err = rw.w.Write(p)
+		default:
+			_, err = rw.ResponseWriter.Write(p)
 		}
+	} else if rw.statusCode != 0 {
+		// it is possible that a body was not written, and
+		// a header was not even written yet, even though
+		// we are closing; ensure the proper status code is
+		// written exactly once, or we risk breaking requests
+		// that rely on If-None-Match, for example
+		rw.ResponseWriter.WriteHeader(rw.statusCode)
+		rw.statusCode = 0
 		rw.wroteHeader = true
 	}
-
-	var err error
 	if rw.w != nil {
-		err = rw.w.Close()
-		rw.w.Reset(nil)
+		err2 := rw.w.Close()
+		if err2 != nil && err == nil {
+			err = err2
+		}
 		rw.config.writerPools[rw.encodingName].Put(rw.w)
 		rw.w = nil
 	}
@@ -285,15 +302,16 @@ func (rw *responseWriter) Close() error {
 // init should be called before we write a response, if rw.buf has contents.
 func (rw *responseWriter) init() {
 	if rw.Header().Get("Content-Encoding") == "" &&
+		rw.buf.Len() >= rw.config.MinLength &&
 		rw.config.Match(rw) {
 
 		rw.w = rw.config.writerPools[rw.encodingName].Get().(Encoder)
-		rw.w.Reset(rw.HTTPInterfaces)
+		rw.w.Reset(rw.ResponseWriter)
 		rw.Header().Del("Content-Length") // https://github.com/golang/go/issues/14975
 		rw.Header().Set("Content-Encoding", rw.encodingName)
 		rw.Header().Add("Vary", "Accept-Encoding")
-		rw.Header().Del("Accept-Ranges") // we don't know ranges for dynamically-encoded content
 	}
+	rw.Header().Del("Accept-Ranges") // we don't know ranges for dynamically-encoded content
 }
 
 // AcceptedEncodings returns the list of encodings that the
@@ -399,6 +417,12 @@ type Precompressed interface {
 	Suffix() string
 }
 
+var bufPool = sync.Pool{
+	New: func() interface{} {
+		return new(bytes.Buffer)
+	},
+}
+
 // defaultMinLength is the minimum length at which to compress content.
 const defaultMinLength = 512
 

modules/caddyhttp/encode/zstd/zstd.go

@@ -45,7 +45,7 @@ func (z *Zstd) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 // used in the Accept-Encoding request headers.
 func (Zstd) AcceptEncoding() string { return "zstd" }
 
-// NewEncoder returns a new Zstandard writer.
+// NewEncoder returns a new gzip writer.
 func (z Zstd) NewEncoder() encode.Encoder {
 	// The default of 8MB for the window is
 	// too large for many clients, so we limit

modules/caddyhttp/fileserver/browse.go

@@ -19,8 +19,6 @@ import (
 	_ "embed"
 	"encoding/json"
 	"fmt"
-	"io"
-	"io/fs"
 	"net/http"
 	"os"
 	"path"
@@ -69,7 +67,9 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
 	if r.URL.Path == "" || path.Base(origReq.URL.Path) == path.Base(r.URL.Path) {
 		if !strings.HasSuffix(origReq.URL.Path, "/") {
 			fsrv.logger.Debug("redirecting to trailing slash to preserve hrefs", zap.String("request_path", r.URL.Path))
-			return redirect(w, r, origReq.URL.Path+"/")
+			origReq.URL.Path += "/"
+			http.Redirect(w, r, origReq.URL.String(), http.StatusMovedPermanently)
+			return nil
 		}
 	}
 
@@ -82,7 +82,7 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
 
 	// calling path.Clean here prevents weird breadcrumbs when URL paths are sketchy like /%2e%2e%2f
-	listing, err := fsrv.loadDirectoryContents(dir.(fs.ReadDirFile), root, path.Clean(r.URL.Path), repl)
+	listing, err := fsrv.loadDirectoryContents(dir, root, path.Clean(r.URL.Path), repl)
 	switch {
 	case os.IsPermission(err):
 		return caddyhttp.Error(http.StatusForbidden, err)
@@ -95,7 +95,6 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
 	fsrv.browseApplyQueryParams(w, r, &listing)
 
 	buf := bufPool.Get().(*bytes.Buffer)
-	buf.Reset()
 	defer bufPool.Put(buf)
 
 	acceptHeader := strings.ToLower(strings.Join(r.Header["Accept"], ","))
@@ -136,9 +135,9 @@ func (fsrv *FileServer) serveBrowse(root, dirPath string, w http.ResponseWriter,
 	return nil
 }
 
-func (fsrv *FileServer) loadDirectoryContents(dir fs.ReadDirFile, root, urlPath string, repl *caddy.Replacer) (browseTemplateContext, error) {
-	files, err := dir.ReadDir(10000) // TODO: this limit should probably be configurable
-	if err != nil && err != io.EOF {
+func (fsrv *FileServer) loadDirectoryContents(dir *os.File, root, urlPath string, repl *caddy.Replacer) (browseTemplateContext, error) {
+	files, err := dir.Readdir(-1)
+	if err != nil {
 		return browseTemplateContext{}, err
 	}
 
@@ -204,25 +203,25 @@ func (fsrv *FileServer) makeBrowseTemplate(tplCtx *templateContext) (*template.T
 	return tpl, nil
 }
 
+// isSymlink return true if f is a symbolic link
+func isSymlink(f os.FileInfo) bool {
+	return f.Mode()&os.ModeSymlink != 0
+}
+
 // isSymlinkTargetDir returns true if f's symbolic link target
 // is a directory.
-func (fsrv *FileServer) isSymlinkTargetDir(f fs.FileInfo, root, urlPath string) bool {
+func isSymlinkTargetDir(f os.FileInfo, root, urlPath string) bool {
 	if !isSymlink(f) {
 		return false
 	}
 	target := caddyhttp.SanitizedPathJoin(root, path.Join(urlPath, f.Name()))
-	targetInfo, err := fs.Stat(fsrv.fileSystem, target)
+	targetInfo, err := os.Stat(target)
 	if err != nil {
 		return false
 	}
 	return targetInfo.IsDir()
 }
 
-// isSymlink return true if f is a symbolic link.
-func isSymlink(f fs.FileInfo) bool {
-	return f.Mode()&os.ModeSymlink != 0
-}
-
 // templateContext powers the context used when evaluating the browse template.
 // It combines browse-specific features with the standard templates handler
 // features.
@@ -233,7 +232,7 @@ type templateContext struct {
 
 // bufPool is used to increase the efficiency of file listings.
 var bufPool = sync.Pool{
-	New: func() any {
+	New: func() interface{} {
 		return new(bytes.Buffer)
 	},
 }

modules/caddyhttp/fileserver/browsetplcontext.go

@@ -15,7 +15,6 @@
 package fileserver
 
 import (
-	"io/fs"
 	"net/url"
 	"os"
 	"path"
@@ -27,31 +26,22 @@ import (
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 	"github.com/dustin/go-humanize"
-	"go.uber.org/zap"
 )
 
-func (fsrv *FileServer) directoryListing(entries []fs.DirEntry, canGoUp bool, root, urlPath string, repl *caddy.Replacer) browseTemplateContext {
+func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root, urlPath string, repl *caddy.Replacer) browseTemplateContext {
 	filesToHide := fsrv.transformHidePaths(repl)
 
 	var dirCount, fileCount int
 	fileInfos := []fileInfo{}
 
-	for _, entry := range entries {
-		name := entry.Name()
+	for _, f := range files {
+		name := f.Name()
 
 		if fileHidden(name, filesToHide) {
 			continue
 		}
 
-		info, err := entry.Info()
-		if err != nil {
-			fsrv.logger.Error("could not get info about directory entry",
-				zap.String("name", entry.Name()),
-				zap.String("root", root))
-			continue
-		}
-
-		isDir := entry.IsDir() || fsrv.isSymlinkTargetDir(info, root, urlPath)
+		isDir := f.IsDir() || isSymlinkTargetDir(f, root, urlPath)
 
 		// add the slash after the escape of path to avoid escaping the slash as well
 		if isDir {
@@ -61,11 +51,11 @@ func (fsrv *FileServer) directoryListing(entries []fs.DirEntry, canGoUp bool, ro
 			fileCount++
 		}
 
-		size := info.Size()
-		fileIsSymlink := isSymlink(info)
+		size := f.Size()
+		fileIsSymlink := isSymlink(f)
 		if fileIsSymlink {
-			path := caddyhttp.SanitizedPathJoin(root, path.Join(urlPath, info.Name()))
-			fileInfo, err := fs.Stat(fsrv.fileSystem, path)
+			path := caddyhttp.SanitizedPathJoin(root, path.Join(urlPath, f.Name()))
+			fileInfo, err := os.Stat(path)
 			if err == nil {
 				size = fileInfo.Size()
 			}
@@ -83,8 +73,8 @@ func (fsrv *FileServer) directoryListing(entries []fs.DirEntry, canGoUp bool, ro
 			Name:      name,
 			Size:      size,
 			URL:       u.String(),
-			ModTime:   info.ModTime().UTC(),
-			Mode:      info.Mode(),
+			ModTime:   f.ModTime().UTC(),
+			Mode:      f.Mode(),
 		})
 	}
 	name, _ := url.PathUnescape(urlPath)

modules/caddyhttp/fileserver/caddyfile.go

@@ -15,13 +15,11 @@
 package fileserver
 
 import (
-	"io/fs"
 	"path/filepath"
 	"strings"
 
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig"
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
@@ -36,16 +34,16 @@ func init() {
 // parseCaddyfile parses the file_server directive. It enables the static file
 // server and configures it with this syntax:
 //
-//	file_server [<matcher>] [browse] {
-//	    fs            <backend...>
-//	    root          <path>
-//	    hide          <files...>
-//	    index         <files...>
-//	    browse        [<template_file>]
-//	    precompressed <formats...>
-//	    status        <status>
-//	    disable_canonical_uris
-//	}
+//    file_server [<matcher>] [browse] {
+//        root          <path>
+//        hide          <files...>
+//        index         <files...>
+//        browse        [<template_file>]
+//        precompressed <formats...>
+//        status        <status>
+//        disable_canonical_uris
+//    }
+//
 func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
 	var fsrv FileServer
 
@@ -64,25 +62,6 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
 
 		for h.NextBlock(0) {
 			switch h.Val() {
-			case "fs":
-				if !h.NextArg() {
-					return nil, h.ArgErr()
-				}
-				if fsrv.FileSystemRaw != nil {
-					return nil, h.Err("file system module already specified")
-				}
-				name := h.Val()
-				modID := "caddy.fs." + name
-				unm, err := caddyfile.UnmarshalModule(h.Dispenser, modID)
-				if err != nil {
-					return nil, err
-				}
-				fsys, ok := unm.(fs.FS)
-				if !ok {
-					return nil, h.Errf("module %s (%T) is not a supported file system implementation (requires fs.FS)", modID, unm)
-				}
-				fsrv.FileSystemRaw = caddyconfig.JSONModuleObject(fsys, "backend", name, nil)
-
 			case "hide":
 				fsrv.Hide = h.RemainingArgs()
 				if len(fsrv.Hide) == 0 {
@@ -176,23 +155,22 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
 // with a rewrite directive, so this is not a standard handler directive.
 // A try_files directive has this syntax (notice no matcher tokens accepted):
 //
-//	try_files <files...> {
-//		policy first_exist|smallest_size|largest_size|most_recently_modified
-//	}
+//    try_files <files...>
 //
 // and is basically shorthand for:
 //
-//	@try_files file {
-//		try_files <files...>
-//		policy first_exist|smallest_size|largest_size|most_recently_modified
-//	}
-//	rewrite @try_files {http.matchers.file.relative}
+//    @try_files {
+//        file {
+//            try_files <files...>
+//        }
+//    }
+//    rewrite @try_files {http.matchers.file.relative}
 //
 // This directive rewrites request paths only, preserving any other part
 // of the URI, unless the part is explicitly given in the file list. For
 // example, if any of the files in the list have a query string:
 //
-//	try_files {path} index.php?{query}&p={path}
+//    try_files {path} index.php?{query}&p={path}
 //
 // then the query string will not be treated as part of the file name; and
 // if that file matches, the given query string will replace any query string
@@ -207,27 +185,6 @@ func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error)
 		return nil, h.ArgErr()
 	}
 
-	// parse out the optional try policy
-	var tryPolicy string
-	for nesting := h.Nesting(); h.NextBlock(nesting); {
-		switch h.Val() {
-		case "policy":
-			if tryPolicy != "" {
-				return nil, h.Err("try policy already configured")
-			}
-			if !h.NextArg() {
-				return nil, h.ArgErr()
-			}
-			tryPolicy = h.Val()
-
-			switch tryPolicy {
-			case tryPolicyFirstExist, tryPolicyLargestSize, tryPolicySmallestSize, tryPolicyMostRecentlyMod:
-			default:
-				return nil, h.Errf("unrecognized try policy: %s", tryPolicy)
-			}
-		}
-	}
-
 	// makeRoute returns a route that tries the files listed in try
 	// and then rewrites to the matched file; userQueryString is
 	// appended to the rewrite rule.
@@ -236,7 +193,7 @@ func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error)
 			URI: "{http.matchers.file.relative}" + userQueryString,
 		}
 		matcherSet := caddy.ModuleMap{
-			"file": h.JSON(MatchFile{TryFiles: try, TryPolicy: tryPolicy}),
+			"file": h.JSON(MatchFile{TryFiles: try}),
 		}
 		return h.NewRoute(matcherSet, handler)
 	}

modules/caddyhttp/fileserver/command.go

@@ -27,7 +27,6 @@ import (
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 	caddytpl "github.com/caddyserver/caddy/v2/modules/caddyhttp/templates"
 	"github.com/caddyserver/certmagic"
-	"go.uber.org/zap"
 )
 
 func init() {
@@ -71,7 +70,6 @@ func cmdFileServer(fs caddycmd.Flags) (int, error) {
 	browse := fs.Bool("browse")
 	templates := fs.Bool("templates")
 	accessLog := fs.Bool("access-log")
-	debug := fs.Bool("debug")
 
 	var handlers []json.RawMessage
 
@@ -119,27 +117,13 @@ func cmdFileServer(fs caddycmd.Flags) (int, error) {
 		Servers: map[string]*caddyhttp.Server{"static": server},
 	}
 
-	var false bool
 	cfg := &caddy.Config{
-		Admin: &caddy.AdminConfig{
-			Disabled: true,
-			Config: &caddy.ConfigSettings{
-				Persist: &false,
-			},
-		},
+		Admin: &caddy.AdminConfig{Disabled: true},
 		AppsRaw: caddy.ModuleMap{
 			"http": caddyconfig.JSON(httpApp, nil),
 		},
 	}
 
-	if debug {
-		cfg.Logging = &caddy.Logging{
-			Logs: map[string]*caddy.CustomLog{
-				"default": {Level: zap.DebugLevel.CapitalString()},
-			},
-		}
-	}
-
 	err := caddy.Run(cfg)
 	if err != nil {
 		return caddy.ExitCodeFailedStartup, err

modules/caddyhttp/fileserver/matcher.go

@@ -15,27 +15,17 @@
 package fileserver
 
 import (
-	"encoding/json"
 	"fmt"
-	"io/fs"
 	"net/http"
 	"os"
 	"path"
-	"path/filepath"
-	"runtime"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
-	"github.com/google/cel-go/cel"
-	"github.com/google/cel-go/common"
-	"github.com/google/cel-go/common/operators"
-	"github.com/google/cel-go/common/types/ref"
-	"github.com/google/cel-go/parser"
-	"go.uber.org/zap"
-	exprpb "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
 )
 
 func init() {
@@ -57,15 +47,7 @@ func init() {
 // the matched file is a directory, "file" otherwise.
 // - `{http.matchers.file.remainder}` Set to the remainder
 // of the path if the path was split by `split_path`.
-//
-// Even though file matching may depend on the OS path
-// separator, the placeholder values always use /.
 type MatchFile struct {
-	// The file system implementation to use. By default, the
-	// local disk file system will be used.
-	FileSystemRaw json.RawMessage `json:"file_system,omitempty" caddy:"namespace=caddy.fs inline_key=backend"`
-	fileSystem    fs.FS
-
 	// The root directory, used for creating absolute
 	// file paths, and required when working with
 	// relative paths; if not specified, `{http.vars.root}`
@@ -106,8 +88,6 @@ type MatchFile struct {
 	// Each delimiter must appear at the end of a URI path
 	// component in order to be used as a split delimiter.
 	SplitPath []string `json:"split_path,omitempty"`
-
-	logger *zap.Logger
 }
 
 // CaddyModule returns the Caddy module information.
@@ -120,11 +100,12 @@ func (MatchFile) CaddyModule() caddy.ModuleInfo {
 
 // UnmarshalCaddyfile sets up the matcher from Caddyfile tokens. Syntax:
 //
-//	file <files...> {
-//	    root      <path>
-//	    try_files <files...>
-//	    try_policy first_exist|smallest_size|largest_size|most_recently_modified
-//	}
+//     file <files...> {
+//         root <path>
+//         try_files <files...>
+//         try_policy first_exist|smallest_size|largest_size|most_recently_modified
+//     }
+//
 func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
 		m.TryFiles = append(m.TryFiles, d.RemainingArgs()...)
@@ -158,122 +139,11 @@ func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil
 }
 
-// CELLibrary produces options that expose this matcher for use in CEL
-// expression matchers.
-//
-// Example:
-//
-//	expression file({'root': '/srv', 'try_files': [{http.request.uri.path}, '/index.php'], 'try_policy': 'first_exist', 'split_path': ['.php']})
-func (MatchFile) CELLibrary(ctx caddy.Context) (cel.Library, error) {
-	requestType := cel.ObjectType("http.Request")
-
-	matcherFactory := func(data ref.Val) (caddyhttp.RequestMatcher, error) {
-		values, err := caddyhttp.CELValueToMapStrList(data)
-		if err != nil {
-			return nil, err
-		}
-
-		var root string
-		if len(values["root"]) > 0 {
-			root = values["root"][0]
-		}
-
-		var try_policy string
-		if len(values["try_policy"]) > 0 {
-			root = values["try_policy"][0]
-		}
-
-		m := MatchFile{
-			Root:      root,
-			TryFiles:  values["try_files"],
-			TryPolicy: try_policy,
-			SplitPath: values["split_path"],
-		}
-
-		err = m.Provision(ctx)
-		return m, err
-	}
-
-	envOptions := []cel.EnvOption{
-		cel.Macros(parser.NewGlobalVarArgMacro("file", celFileMatcherMacroExpander())),
-		cel.Function("file", cel.Overload("file_request_map", []*cel.Type{requestType, caddyhttp.CELTypeJSON}, cel.BoolType)),
-		cel.Function("file_request_map",
-			cel.Overload("file_request_map", []*cel.Type{requestType, caddyhttp.CELTypeJSON}, cel.BoolType),
-			cel.SingletonBinaryImpl(caddyhttp.CELMatcherRuntimeFunction("file_request_map", matcherFactory))),
-	}
-
-	programOptions := []cel.ProgramOption{
-		cel.CustomDecorator(caddyhttp.CELMatcherDecorator("file_request_map", matcherFactory)),
-	}
-
-	return caddyhttp.NewMatcherCELLibrary(envOptions, programOptions), nil
-}
-
-func celFileMatcherMacroExpander() parser.MacroExpander {
-	return func(eh parser.ExprHelper, target *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *common.Error) {
-		if len(args) == 0 {
-			return nil, &common.Error{
-				Message: "matcher requires at least one argument",
-			}
-		}
-		if len(args) == 1 {
-			arg := args[0]
-			if isCELStringLiteral(arg) || isCELCaddyPlaceholderCall(arg) {
-				return eh.GlobalCall("file",
-					eh.Ident("request"),
-					eh.NewMap(
-						eh.NewMapEntry(eh.LiteralString("try_files"), eh.NewList(arg)),
-					),
-				), nil
-			}
-			if isCELTryFilesLiteral(arg) {
-				return eh.GlobalCall("file", eh.Ident("request"), arg), nil
-			}
-			return nil, &common.Error{
-				Location: eh.OffsetLocation(arg.GetId()),
-				Message:  "matcher requires either a map or string literal argument",
-			}
-		}
-
-		for _, arg := range args {
-			if !(isCELStringLiteral(arg) || isCELCaddyPlaceholderCall(arg)) {
-				return nil, &common.Error{
-					Location: eh.OffsetLocation(arg.GetId()),
-					Message:  "matcher only supports repeated string literal arguments",
-				}
-			}
-		}
-		return eh.GlobalCall("file",
-			eh.Ident("request"),
-			eh.NewMap(
-				eh.NewMapEntry(
-					eh.LiteralString("try_files"), eh.NewList(args...),
-				),
-			),
-		), nil
-	}
-}
-
 // Provision sets up m's defaults.
-func (m *MatchFile) Provision(ctx caddy.Context) error {
-	m.logger = ctx.Logger()
-
-	// establish the file system to use
-	if len(m.FileSystemRaw) > 0 {
-		mod, err := ctx.LoadModule(m, "FileSystemRaw")
-		if err != nil {
-			return fmt.Errorf("loading file system module: %v", err)
-		}
-		m.fileSystem = mod.(fs.FS)
-	}
-	if m.fileSystem == nil {
-		m.fileSystem = osFS{}
-	}
-
+func (m *MatchFile) Provision(_ caddy.Context) error {
 	if m.Root == "" {
 		m.Root = "{http.vars.root}"
 	}
-
 	// if list of files to try was omitted entirely, assume URL path
 	// (use placeholder instead of r.URL.Path; see issue #4146)
 	if m.TryFiles == nil {
@@ -299,10 +169,10 @@ func (m MatchFile) Validate() error {
 // Match returns true if r matches m. Returns true
 // if a file was matched. If so, four placeholders
 // will be available:
-//   - http.matchers.file.relative: Path to file relative to site root
-//   - http.matchers.file.absolute: Path to file including site root
-//   - http.matchers.file.type: file or directory
-//   - http.matchers.file.remainder: Portion remaining after splitting file path (if configured)
+//    - http.matchers.file.relative
+//    - http.matchers.file.absolute
+//    - http.matchers.file.type
+//    - http.matchers.file.remainder
 func (m MatchFile) Match(r *http.Request) bool {
 	return m.selectFile(r)
 }
@@ -312,80 +182,23 @@ func (m MatchFile) Match(r *http.Request) bool {
 func (m MatchFile) selectFile(r *http.Request) (matched bool) {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
 
-	root := filepath.Clean(repl.ReplaceAll(m.Root, "."))
+	root := repl.ReplaceAll(m.Root, ".")
 
-	type matchCandidate struct {
-		fullpath, relative, splitRemainder string
-	}
-
-	// makeCandidates evaluates placeholders in file and expands any glob expressions
-	// to build a list of file candidates. Special glob characters are escaped in
-	// placeholder replacements so globs cannot be expanded from placeholders, and
-	// globs are not evaluated on Windows because of its path separator character:
-	// escaping is not supported so we can't safely glob on Windows, or we can't
-	// support placeholders on Windows (pick one). (Actually, evaluating untrusted
-	// globs is not the end of the world since the file server will still hide any
-	// hidden files, it just might lead to unexpected behavior.)
-	makeCandidates := func(file string) []matchCandidate {
-		// first, evaluate placeholders in the file pattern
-		expandedFile, err := repl.ReplaceFunc(file, func(variable string, val any) (any, error) {
-			if runtime.GOOS == "windows" {
-				return val, nil
-			}
-			switch v := val.(type) {
-			case string:
-				return globSafeRepl.Replace(v), nil
-			case fmt.Stringer:
-				return globSafeRepl.Replace(v.String()), nil
-			}
-			return val, nil
-		})
-		if err != nil {
-			m.logger.Error("evaluating placeholders", zap.Error(err))
-			expandedFile = file // "oh well," I guess?
-		}
-
-		// clean the path and split, if configured -- we must split before
-		// globbing so that the file system doesn't include the remainder
-		// ("afterSplit") in the filename; be sure to restore trailing slash
-		beforeSplit, afterSplit := m.firstSplit(path.Clean(expandedFile))
+	// common preparation of the file into parts
+	prepareFilePath := func(file string) (suffix, fullpath, remainder string) {
+		suffix, remainder = m.firstSplit(path.Clean(repl.ReplaceAll(file, "")))
 		if strings.HasSuffix(file, "/") {
-			beforeSplit += "/"
+			suffix += "/"
 		}
-
-		// create the full path to the file by prepending the site root
-		fullPattern := caddyhttp.SanitizedPathJoin(root, beforeSplit)
-
-		// expand glob expressions, but not on Windows because Glob() doesn't
-		// support escaping on Windows due to path separator)
-		var globResults []string
-		if runtime.GOOS == "windows" {
-			globResults = []string{fullPattern} // precious Windows
-		} else {
-			globResults, err = fs.Glob(m.fileSystem, fullPattern)
-			if err != nil {
-				m.logger.Error("expanding glob", zap.Error(err))
-			}
-		}
-
-		// for each glob result, combine all the forms of the path
-		var candidates []matchCandidate
-		for _, result := range globResults {
-			candidates = append(candidates, matchCandidate{
-				fullpath:       result,
-				relative:       strings.TrimPrefix(result, root),
-				splitRemainder: afterSplit,
-			})
-		}
-
-		return candidates
+		fullpath = caddyhttp.SanitizedPathJoin(root, suffix)
+		return
 	}
 
-	// setPlaceholders creates the placeholders for the matched file
-	setPlaceholders := func(candidate matchCandidate, info fs.FileInfo) {
-		repl.Set("http.matchers.file.relative", filepath.ToSlash(candidate.relative))
-		repl.Set("http.matchers.file.absolute", filepath.ToSlash(candidate.fullpath))
-		repl.Set("http.matchers.file.remainder", filepath.ToSlash(candidate.splitRemainder))
+	// sets up the placeholders for the matched file
+	setPlaceholders := func(info os.FileInfo, rel string, abs string, remainder string) {
+		repl.Set("http.matchers.file.relative", rel)
+		repl.Set("http.matchers.file.absolute", abs)
+		repl.Set("http.matchers.file.remainder", remainder)
 
 		fileType := "file"
 		if info.IsDir() {
@@ -394,83 +207,76 @@ func (m MatchFile) selectFile(r *http.Request) (matched bool) {
 		repl.Set("http.matchers.file.type", fileType)
 	}
 
-	// match file according to the configured policy
 	switch m.TryPolicy {
 	case "", tryPolicyFirstExist:
-		for _, pattern := range m.TryFiles {
-			if err := parseErrorCode(pattern); err != nil {
+		for _, f := range m.TryFiles {
+			if err := parseErrorCode(f); err != nil {
 				caddyhttp.SetVar(r.Context(), caddyhttp.MatcherErrorVarKey, err)
 				return
 			}
-			candidates := makeCandidates(pattern)
-			for _, c := range candidates {
-				if info, exists := m.strictFileExists(c.fullpath); exists {
-					setPlaceholders(c, info)
-					return true
-				}
+			suffix, fullpath, remainder := prepareFilePath(f)
+			if info, exists := strictFileExists(fullpath); exists {
+				setPlaceholders(info, suffix, fullpath, remainder)
+				return true
 			}
 		}
 
 	case tryPolicyLargestSize:
 		var largestSize int64
-		var largest matchCandidate
-		var largestInfo os.FileInfo
-		for _, pattern := range m.TryFiles {
-			candidates := makeCandidates(pattern)
-			for _, c := range candidates {
-				info, err := fs.Stat(m.fileSystem, c.fullpath)
-				if err == nil && info.Size() > largestSize {
-					largestSize = info.Size()
-					largest = c
-					largestInfo = info
-				}
+		var largestFilename string
+		var largestSuffix string
+		var remainder string
+		var info os.FileInfo
+		for _, f := range m.TryFiles {
+			suffix, fullpath, splitRemainder := prepareFilePath(f)
+			info, err := os.Stat(fullpath)
+			if err == nil && info.Size() > largestSize {
+				largestSize = info.Size()
+				largestFilename = fullpath
+				largestSuffix = suffix
+				remainder = splitRemainder
 			}
 		}
-		if largestInfo == nil {
-			return false
-		}
-		setPlaceholders(largest, largestInfo)
+		setPlaceholders(info, largestSuffix, largestFilename, remainder)
 		return true
 
 	case tryPolicySmallestSize:
 		var smallestSize int64
-		var smallest matchCandidate
-		var smallestInfo os.FileInfo
-		for _, pattern := range m.TryFiles {
-			candidates := makeCandidates(pattern)
-			for _, c := range candidates {
-				info, err := fs.Stat(m.fileSystem, c.fullpath)
-				if err == nil && (smallestSize == 0 || info.Size() < smallestSize) {
-					smallestSize = info.Size()
-					smallest = c
-					smallestInfo = info
-				}
+		var smallestFilename string
+		var smallestSuffix string
+		var remainder string
+		var info os.FileInfo
+		for _, f := range m.TryFiles {
+			suffix, fullpath, splitRemainder := prepareFilePath(f)
+			info, err := os.Stat(fullpath)
+			if err == nil && (smallestSize == 0 || info.Size() < smallestSize) {
+				smallestSize = info.Size()
+				smallestFilename = fullpath
+				smallestSuffix = suffix
+				remainder = splitRemainder
 			}
 		}
-		if smallestInfo == nil {
-			return false
-		}
-		setPlaceholders(smallest, smallestInfo)
+		setPlaceholders(info, smallestSuffix, smallestFilename, remainder)
 		return true
 
 	case tryPolicyMostRecentlyMod:
-		var recent matchCandidate
-		var recentInfo os.FileInfo
-		for _, pattern := range m.TryFiles {
-			candidates := makeCandidates(pattern)
-			for _, c := range candidates {
-				info, err := fs.Stat(m.fileSystem, c.fullpath)
-				if err == nil &&
-					(recentInfo == nil || info.ModTime().After(recentInfo.ModTime())) {
-					recent = c
-					recentInfo = info
-				}
+		var recentDate time.Time
+		var recentFilename string
+		var recentSuffix string
+		var remainder string
+		var info os.FileInfo
+		for _, f := range m.TryFiles {
+			suffix, fullpath, splitRemainder := prepareFilePath(f)
+			info, err := os.Stat(fullpath)
+			if err == nil &&
+				(recentDate.IsZero() || info.ModTime().After(recentDate)) {
+				recentDate = info.ModTime()
+				recentFilename = fullpath
+				recentSuffix = suffix
+				remainder = splitRemainder
 			}
 		}
-		if recentInfo == nil {
-			return false
-		}
-		setPlaceholders(recent, recentInfo)
+		setPlaceholders(info, recentSuffix, recentFilename, remainder)
 		return true
 	}
 
@@ -497,8 +303,8 @@ func parseErrorCode(input string) error {
 // the file must also be a directory; if it does
 // NOT end in a forward slash, the file must NOT
 // be a directory.
-func (m MatchFile) strictFileExists(file string) (os.FileInfo, bool) {
-	info, err := fs.Stat(m.fileSystem, file)
+func strictFileExists(file string) (os.FileInfo, bool) {
+	stat, err := os.Stat(file)
 	if err != nil {
 		// in reality, this can be any error
 		// such as permission or even obscure
@@ -513,11 +319,11 @@ func (m MatchFile) strictFileExists(file string) (os.FileInfo, bool) {
 	if strings.HasSuffix(file, separator) {
 		// by convention, file paths ending
 		// in a path separator must be a directory
-		return info, info.IsDir()
+		return stat, stat.IsDir()
 	}
 	// by convention, file paths NOT ending
 	// in a path separator must NOT be a directory
-	return info, !info.IsDir()
+	return stat, !stat.IsDir()
 }
 
 // firstSplit returns the first result where the path
@@ -553,116 +359,6 @@ func indexFold(haystack, needle string) int {
 	return -1
 }
 
-// isCELMapLiteral returns whether the expression resolves to a map literal containing
-// only string keys with or a placeholder call.
-func isCELTryFilesLiteral(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_StructExpr:
-		structExpr := e.GetStructExpr()
-		if structExpr.GetMessageName() != "" {
-			return false
-		}
-		for _, entry := range structExpr.GetEntries() {
-			mapKey := entry.GetMapKey()
-			mapVal := entry.GetValue()
-			if !isCELStringLiteral(mapKey) {
-				return false
-			}
-			mapKeyStr := mapKey.GetConstExpr().GetStringValue()
-			if mapKeyStr == "try_files" || mapKeyStr == "split_path" {
-				if !isCELStringListLiteral(mapVal) {
-					return false
-				}
-			} else if mapKeyStr == "try_policy" || mapKeyStr == "root" {
-				if !(isCELStringExpr(mapVal)) {
-					return false
-				}
-			} else {
-				return false
-			}
-		}
-		return true
-	}
-	return false
-}
-
-// isCELStringExpr indicates whether the expression is a supported string expression
-func isCELStringExpr(e *exprpb.Expr) bool {
-	return isCELStringLiteral(e) || isCELCaddyPlaceholderCall(e) || isCELConcatCall(e)
-}
-
-// isCELStringLiteral returns whether the expression is a CEL string literal.
-func isCELStringLiteral(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_ConstExpr:
-		constant := e.GetConstExpr()
-		switch constant.GetConstantKind().(type) {
-		case *exprpb.Constant_StringValue:
-			return true
-		}
-	}
-	return false
-}
-
-// isCELCaddyPlaceholderCall returns whether the expression is a caddy placeholder call.
-func isCELCaddyPlaceholderCall(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_CallExpr:
-		call := e.GetCallExpr()
-		if call.GetFunction() == "caddyPlaceholder" {
-			return true
-		}
-	}
-	return false
-}
-
-// isCELConcatCall tests whether the expression is a concat function (+) with string, placeholder, or
-// other concat call arguments.
-func isCELConcatCall(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_CallExpr:
-		call := e.GetCallExpr()
-		if call.GetTarget() != nil {
-			return false
-		}
-		if call.GetFunction() != operators.Add {
-			return false
-		}
-		for _, arg := range call.GetArgs() {
-			if !isCELStringExpr(arg) {
-				return false
-			}
-		}
-		return true
-	}
-	return false
-}
-
-// isCELStringListLiteral returns whether the expression resolves to a list literal
-// containing only string constants or a placeholder call.
-func isCELStringListLiteral(e *exprpb.Expr) bool {
-	switch e.GetExprKind().(type) {
-	case *exprpb.Expr_ListExpr:
-		list := e.GetListExpr()
-		for _, elem := range list.GetElements() {
-			if !isCELStringExpr(elem) {
-				return false
-			}
-		}
-		return true
-	}
-	return false
-}
-
-// globSafeRepl replaces special glob characters with escaped
-// equivalents. Note that the filepath godoc states that
-// escaping is not done on Windows because of the separator.
-var globSafeRepl = strings.NewReplacer(
-	"*", "\\*",
-	"[", "\\[",
-	"?", "\\?",
-)
-
 const (
 	tryPolicyFirstExist      = "first_exist"
 	tryPolicyLargestSize     = "largest_size"
@@ -672,7 +368,6 @@ const (
 
 // Interface guards
 var (
-	_ caddy.Validator              = (*MatchFile)(nil)
-	_ caddyhttp.RequestMatcher     = (*MatchFile)(nil)
-	_ caddyhttp.CELLibraryProducer = (*MatchFile)(nil)
+	_ caddy.Validator          = (*MatchFile)(nil)
+	_ caddyhttp.RequestMatcher = (*MatchFile)(nil)
 )

modules/caddyhttp/fileserver/matcher_test.go

@@ -15,19 +15,17 @@
 package fileserver
 
 import (
-	"context"
 	"net/http"
-	"net/http/httptest"
 	"net/url"
 	"os"
 	"runtime"
 	"testing"
 
-	"github.com/caddyserver/caddy/v2"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
 func TestFileMatcher(t *testing.T) {
+
 	// Windows doesn't like colons in files names
 	isWindows := runtime.GOOS == "windows"
 	if !isWindows {
@@ -86,38 +84,37 @@ func TestFileMatcher(t *testing.T) {
 		},
 		{
 			path:         "ملف.txt", // the path file name is not escaped
-			expectedPath: "/ملف.txt",
+			expectedPath: "ملف.txt",
 			expectedType: "file",
 			matched:      true,
 		},
 		{
 			path:         url.PathEscape("ملف.txt"), // singly-escaped path
-			expectedPath: "/ملف.txt",
+			expectedPath: "ملف.txt",
 			expectedType: "file",
 			matched:      true,
 		},
 		{
 			path:         url.PathEscape(url.PathEscape("ملف.txt")), // doubly-escaped path
-			expectedPath: "/%D9%85%D9%84%D9%81.txt",
+			expectedPath: "%D9%85%D9%84%D9%81.txt",
 			expectedType: "file",
 			matched:      true,
 		},
 		{
 			path:         "./with:in-name.txt", // browsers send the request with the path as such
-			expectedPath: "/with:in-name.txt",
+			expectedPath: "with:in-name.txt",
 			expectedType: "file",
 			matched:      !isWindows,
 		},
 	} {
 		m := &MatchFile{
-			fileSystem: osFS{},
-			Root:       "./testdata",
-			TryFiles:   []string{"{http.request.uri.path}", "{http.request.uri.path}/"},
+			Root:     "./testdata",
+			TryFiles: []string{"{http.request.uri.path}", "{http.request.uri.path}/"},
 		}
 
 		u, err := url.Parse(tc.path)
 		if err != nil {
-			t.Errorf("Test %d: parsing path: %v", i, err)
+			t.Fatalf("Test %d: parsing path: %v", i, err)
 		}
 
 		req := &http.Request{URL: u}
@@ -125,24 +122,24 @@ func TestFileMatcher(t *testing.T) {
 
 		result := m.Match(req)
 		if result != tc.matched {
-			t.Errorf("Test %d: expected match=%t, got %t", i, tc.matched, result)
+			t.Fatalf("Test %d: expected match=%t, got %t", i, tc.matched, result)
 		}
 
 		rel, ok := repl.Get("http.matchers.file.relative")
 		if !ok && result {
-			t.Errorf("Test %d: expected replacer value", i)
+			t.Fatalf("Test %d: expected replacer value", i)
 		}
 		if !result {
 			continue
 		}
 
 		if rel != tc.expectedPath {
-			t.Errorf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
+			t.Fatalf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
 		}
 
 		fileType, _ := repl.Get("http.matchers.file.type")
 		if fileType != tc.expectedType {
-			t.Errorf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
+			t.Fatalf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
 		}
 	}
 }
@@ -213,15 +210,14 @@ func TestPHPFileMatcher(t *testing.T) {
 		},
 	} {
 		m := &MatchFile{
-			fileSystem: osFS{},
-			Root:       "./testdata",
-			TryFiles:   []string{"{http.request.uri.path}", "{http.request.uri.path}/index.php"},
-			SplitPath:  []string{".php"},
+			Root:      "./testdata",
+			TryFiles:  []string{"{http.request.uri.path}", "{http.request.uri.path}/index.php"},
+			SplitPath: []string{".php"},
 		}
 
 		u, err := url.Parse(tc.path)
 		if err != nil {
-			t.Errorf("Test %d: parsing path: %v", i, err)
+			t.Fatalf("Test %d: parsing path: %v", i, err)
 		}
 
 		req := &http.Request{URL: u}
@@ -229,24 +225,24 @@ func TestPHPFileMatcher(t *testing.T) {
 
 		result := m.Match(req)
 		if result != tc.matched {
-			t.Errorf("Test %d: expected match=%t, got %t", i, tc.matched, result)
+			t.Fatalf("Test %d: expected match=%t, got %t", i, tc.matched, result)
 		}
 
 		rel, ok := repl.Get("http.matchers.file.relative")
 		if !ok && result {
-			t.Errorf("Test %d: expected replacer value", i)
+			t.Fatalf("Test %d: expected replacer value", i)
 		}
 		if !result {
 			continue
 		}
 
 		if rel != tc.expectedPath {
-			t.Errorf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
+			t.Fatalf("Test %d: actual path: %v, expected: %v", i, rel, tc.expectedPath)
 		}
 
 		fileType, _ := repl.Get("http.matchers.file.type")
 		if fileType != tc.expectedType {
-			t.Errorf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
+			t.Fatalf("Test %d: actual file type: %v, expected: %v", i, fileType, tc.expectedType)
 		}
 	}
 }
@@ -263,109 +259,3 @@ func TestFirstSplit(t *testing.T) {
 		t.Errorf("Expected remainder %s but got %s", expectedRemainder, remainder)
 	}
 }
-
-var (
-	expressionTests = []struct {
-		name              string
-		expression        *caddyhttp.MatchExpression
-		urlTarget         string
-		httpMethod        string
-		httpHeader        *http.Header
-		wantErr           bool
-		wantResult        bool
-		clientCertificate []byte
-	}{
-		{
-			name: "file error no args (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file()`,
-			},
-			urlTarget: "https://example.com/foo",
-			wantErr:   true,
-		},
-		{
-			name: "file error bad try files (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file({"try_file": ["bad_arg"]})`,
-			},
-			urlTarget: "https://example.com/foo",
-			wantErr:   true,
-		},
-		{
-			name: "file match short pattern index.php (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file("index.php")`,
-			},
-			urlTarget:  "https://example.com/foo",
-			wantResult: true,
-		},
-		{
-			name: "file match short pattern foo.txt (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file({http.request.uri.path})`,
-			},
-			urlTarget:  "https://example.com/foo.txt",
-			wantResult: true,
-		},
-		{
-			name: "file match index.php (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file({"root": "./testdata", "try_files": [{http.request.uri.path}, "/index.php"]})`,
-			},
-			urlTarget:  "https://example.com/foo",
-			wantResult: true,
-		},
-		{
-			name: "file match long pattern foo.txt (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file({"root": "./testdata", "try_files": [{http.request.uri.path}]})`,
-			},
-			urlTarget:  "https://example.com/foo.txt",
-			wantResult: true,
-		},
-		{
-			name: "file match long pattern foo.txt with concatenation (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file({"root": ".", "try_files": ["./testdata" + {http.request.uri.path}]})`,
-			},
-			urlTarget:  "https://example.com/foo.txt",
-			wantResult: true,
-		},
-		{
-			name: "file not match long pattern (MatchFile)",
-			expression: &caddyhttp.MatchExpression{
-				Expr: `file({"root": "./testdata", "try_files": [{http.request.uri.path}]})`,
-			},
-			urlTarget:  "https://example.com/nopenope.txt",
-			wantResult: false,
-		},
-	}
-)
-
-func TestMatchExpressionMatch(t *testing.T) {
-	for _, tst := range expressionTests {
-		tc := tst
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.expression.Provision(caddy.Context{})
-			if err != nil {
-				if !tc.wantErr {
-					t.Errorf("MatchExpression.Provision() error = %v, wantErr %v", err, tc.wantErr)
-				}
-				return
-			}
-
-			req := httptest.NewRequest(tc.httpMethod, tc.urlTarget, nil)
-			if tc.httpHeader != nil {
-				req.Header = *tc.httpHeader
-			}
-			repl := caddyhttp.NewTestReplacer(req)
-			repl.Set("http.vars.root", "./testdata")
-			ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
-			req = req.WithContext(ctx)
-
-			if tc.expression.Match(req) != tc.wantResult {
-				t.Errorf("MatchExpression.Match() expected to return '%t', for expression : '%s'", tc.wantResult, tc.expression.Expr)
-			}
-		})
-	}
-}

modules/caddyhttp/fileserver/staticfiles.go

@@ -15,14 +15,11 @@
 package fileserver
 
 import (
-	"encoding/json"
-	"errors"
 	"fmt"
-	"io"
-	"io/fs"
 	weakrand "math/rand"
 	"mime"
 	"net/http"
+	"net/url"
 	"os"
 	"path"
 	"path/filepath"
@@ -42,63 +39,10 @@ func init() {
 	caddy.RegisterModule(FileServer{})
 }
 
-// FileServer implements a handler that serves static files.
-//
-// The path of the file to serve is constructed by joining the site root
-// and the sanitized request path. Any and all files within the root and
-// links with targets outside the site root may therefore be accessed.
-// For example, with a site root of `/www`, requests to `/foo/bar.txt`
-// will serve the file at `/www/foo/bar.txt`.
-//
-// The request path is sanitized using the Go standard library's
-// path.Clean() function (https://pkg.go.dev/path#Clean) before being
-// joined to the root. Request paths must be valid and well-formed.
-//
-// For requests that access directories instead of regular files,
-// Caddy will attempt to serve an index file if present. For example,
-// a request to `/dir/` will attempt to serve `/dir/index.html` if
-// it exists. The index file names to try are configurable. If a
-// requested directory does not have an index file, Caddy writes a
-// 404 response. Alternatively, file browsing can be enabled with
-// the "browse" parameter which shows a list of files when directories
-// are requested if no index file is present.
-//
-// By default, this handler will canonicalize URIs so that requests to
-// directories end with a slash, but requests to regular files do not.
-// This is enforced with HTTP redirects automatically and can be disabled.
-// Canonicalization redirects are not issued, however, if a URI rewrite
-// modified the last component of the path (the filename).
-//
-// This handler sets the Etag and Last-Modified headers for static files.
-// It does not perform MIME sniffing to determine Content-Type based on
-// contents, but does use the extension (if known); see the Go docs for
-// details: https://pkg.go.dev/mime#TypeByExtension
-//
-// The file server properly handles requests with If-Match,
-// If-Unmodified-Since, If-Modified-Since, If-None-Match, Range, and
-// If-Range headers. It includes the file's modification time in the
-// Last-Modified header of the response.
+// FileServer implements a static file server responder for Caddy.
 type FileServer struct {
-	// The file system implementation to use. By default, Caddy uses the local
-	// disk file system.
-	//
-	// File system modules used here must adhere to the following requirements:
-	// - Implement fs.FS interface.
-	// - Support seeking on opened files; i.e.returned fs.File values must
-	//   implement the io.Seeker interface. This is required for determining
-	//   Content-Length and satisfying Range requests.
-	// - fs.File values that represent directories must implement the
-	//   fs.ReadDirFile interface so that directory listings can be procured.
-	FileSystemRaw json.RawMessage `json:"file_system,omitempty" caddy:"namespace=caddy.fs inline_key=backend"`
-	fileSystem    fs.FS
-
 	// The path to the root of the site. Default is `{http.vars.root}` if set,
-	// or current working directory otherwise. This should be a trusted value.
-	//
-	// Note that a site root is not a sandbox. Although the file server does
-	// sanitize the request URI to prevent directory traversal, files (including
-	// links) within the site root may be directly accessed based on the request
-	// path. Files and folders within the root should be secure and trustworthy.
+	// or current working directory otherwise.
 	Root string `json:"root,omitempty"`
 
 	// A list of files or folders to hide; the file server will pretend as if
@@ -119,7 +63,6 @@ type FileServer struct {
 	Hide []string `json:"hide,omitempty"`
 
 	// The names of files to try as index files if a folder is requested.
-	// Default: index.html, index.txt.
 	IndexNames []string `json:"index_names,omitempty"`
 
 	// Enables file listings if a directory was requested and no index
@@ -152,7 +95,8 @@ type FileServer struct {
 	// If no order specified here, the first encoding from the Accept-Encoding header
 	// that both client and server support is used
 	PrecompressedOrder []string `json:"precompressed_order,omitempty"`
-	precompressors     map[string]encode.Precompressed
+
+	precompressors map[string]encode.Precompressed
 
 	logger *zap.Logger
 }
@@ -167,19 +111,7 @@ func (FileServer) CaddyModule() caddy.ModuleInfo {
 
 // Provision sets up the static files responder.
 func (fsrv *FileServer) Provision(ctx caddy.Context) error {
-	fsrv.logger = ctx.Logger()
-
-	// establish which file system (possibly a virtual one) we'll be using
-	if len(fsrv.FileSystemRaw) > 0 {
-		mod, err := ctx.LoadModule(fsrv, "FileSystemRaw")
-		if err != nil {
-			return fmt.Errorf("loading file system module: %v", err)
-		}
-		fsrv.fileSystem = mod.(fs.FS)
-	}
-	if fsrv.fileSystem == nil {
-		fsrv.fileSystem = osFS{}
-	}
+	fsrv.logger = ctx.Logger(fsrv)
 
 	if fsrv.Root == "" {
 		fsrv.Root = "{http.vars.root}"
@@ -199,12 +131,11 @@ func (fsrv *FileServer) Provision(ctx caddy.Context) error {
 		}
 	}
 
-	// support precompressed sidecar files
 	mods, err := ctx.LoadModule(fsrv, "PrecompressedRaw")
 	if err != nil {
 		return fmt.Errorf("loading encoder modules: %v", err)
 	}
-	for modName, modIface := range mods.(map[string]any) {
+	for modName, modIface := range mods.(map[string]interface{}) {
 		p, ok := modIface.(encode.Precompressed)
 		if !ok {
 			return fmt.Errorf("module %s is not precompressor", modName)
@@ -235,7 +166,16 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 	filesToHide := fsrv.transformHidePaths(repl)
 
 	root := repl.ReplaceAll(fsrv.Root, ".")
-
+	// PathUnescape returns an error if the escapes aren't well-formed,
+	// meaning the count % matches the RFC. Return early if the escape is
+	// improper.
+	if _, err := url.PathUnescape(r.URL.Path); err != nil {
+		fsrv.logger.Debug("improper path escape",
+			zap.String("site_root", root),
+			zap.String("request_path", r.URL.Path),
+			zap.Error(err))
+		return err
+	}
 	filename := caddyhttp.SanitizedPathJoin(root, r.URL.Path)
 
 	fsrv.logger.Debug("sanitized path join",
@@ -244,12 +184,12 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 		zap.String("result", filename))
 
 	// get information about the file
-	info, err := fs.Stat(fsrv.fileSystem, filename)
+	info, err := os.Stat(filename)
 	if err != nil {
-		err = fsrv.mapDirOpenError(err, filename)
-		if errors.Is(err, fs.ErrNotExist) {
+		err = mapDirOpenError(err, filename)
+		if os.IsNotExist(err) {
 			return fsrv.notFound(w, r, next)
-		} else if errors.Is(err, fs.ErrPermission) {
+		} else if os.IsPermission(err) {
 			return caddyhttp.Error(http.StatusForbidden, err)
 		}
 		return caddyhttp.Error(http.StatusInternalServerError, err)
@@ -270,7 +210,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 				continue
 			}
 
-			indexInfo, err := fs.Stat(fsrv.fileSystem, indexPath)
+			indexInfo, err := os.Stat(indexPath)
 			if err != nil {
 				continue
 			}
@@ -340,8 +280,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 		}
 	}
 
-	var file fs.File
-	var etag string
+	var file *os.File
 
 	// check for precompressed files
 	for _, ae := range encode.AcceptedEncodings(r, fsrv.PrecompressedOrder) {
@@ -350,7 +289,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 			continue
 		}
 		compressedFilename := filename + precompress.Suffix()
-		compressedInfo, err := fs.Stat(fsrv.fileSystem, compressedFilename)
+		compressedInfo, err := os.Stat(compressedFilename)
 		if err != nil || compressedInfo.IsDir() {
 			fsrv.logger.Debug("precompressed file not accessible", zap.String("filename", compressedFilename), zap.Error(err))
 			continue
@@ -362,19 +301,12 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 			if caddyErr, ok := err.(caddyhttp.HandlerError); ok && caddyErr.StatusCode == http.StatusServiceUnavailable {
 				return err
 			}
-			file = nil
 			continue
 		}
 		defer file.Close()
 		w.Header().Set("Content-Encoding", ae)
 		w.Header().Del("Accept-Ranges")
 		w.Header().Add("Vary", "Accept-Encoding")
-
-		// don't assign info = compressedInfo because sidecars are kind
-		// of transparent; however we do need to set the Etag:
-		// https://caddy.community/t/gzipped-sidecar-file-wrong-same-etag/16793
-		etag = calculateEtag(compressedInfo)
-
 		break
 	}
 
@@ -392,18 +324,18 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 			return err // error is already structured
 		}
 		defer file.Close()
-
-		etag = calculateEtag(info)
 	}
 
-	// set the Etag - note that a conditional If-None-Match request is handled
-	// by http.ServeContent below, which checks against this Etag value
-	w.Header().Set("Etag", etag)
+	// set the ETag - note that a conditional If-None-Match request is handled
+	// by http.ServeContent below, which checks against this ETag value
+	w.Header().Set("ETag", calculateEtag(info))
 
 	if w.Header().Get("Content-Type") == "" {
 		mtyp := mime.TypeByExtension(filepath.Ext(filename))
 		if mtyp == "" {
-			// do not allow Go to sniff the content-type; see https://www.youtube.com/watch?v=8t8JYpt0egE
+			// do not allow Go to sniff the content-type; see
+			// https://www.youtube.com/watch?v=8t8JYpt0egE
+			// TODO: If we want a Content-Type, consider writing a default of application/octet-stream - this is secure but violates spec
 			w.Header()["Content-Type"] = nil
 		} else {
 			w.Header().Set("Content-Type", mtyp)
@@ -443,7 +375,7 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 	// that errors generated by ServeContent are written immediately
 	// to the response, so we cannot handle them (but errors there
 	// are rare)
-	http.ServeContent(w, r, info.Name(), info.ModTime(), file.(io.ReadSeeker))
+	http.ServeContent(w, r, info.Name(), info.ModTime(), file)
 
 	return nil
 }
@@ -452,10 +384,10 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
 // the response is configured to inform the client how to best handle it
 // and a well-described handler error is returned (do not wrap the
 // returned error value).
-func (fsrv *FileServer) openFile(filename string, w http.ResponseWriter) (fs.File, error) {
-	file, err := fsrv.fileSystem.Open(filename)
+func (fsrv *FileServer) openFile(filename string, w http.ResponseWriter) (*os.File, error) {
+	file, err := os.Open(filename)
 	if err != nil {
-		err = fsrv.mapDirOpenError(err, filename)
+		err = mapDirOpenError(err, filename)
 		if os.IsNotExist(err) {
 			fsrv.logger.Debug("file not found", zap.String("filename", filename), zap.Error(err))
 			return nil, caddyhttp.Error(http.StatusNotFound, err)
@@ -480,8 +412,8 @@ func (fsrv *FileServer) openFile(filename string, w http.ResponseWriter) (fs.Fil
 // Adapted from the Go standard library; originally written by Nathaniel Caza.
 // https://go-review.googlesource.com/c/go/+/36635/
 // https://go-review.googlesource.com/c/go/+/36804/
-func (fsrv *FileServer) mapDirOpenError(originalErr error, name string) error {
-	if errors.Is(originalErr, fs.ErrNotExist) || errors.Is(originalErr, fs.ErrPermission) {
+func mapDirOpenError(originalErr error, name string) error {
+	if os.IsNotExist(originalErr) || os.IsPermission(originalErr) {
 		return originalErr
 	}
 
@@ -490,12 +422,12 @@ func (fsrv *FileServer) mapDirOpenError(originalErr error, name string) error {
 		if parts[i] == "" {
 			continue
 		}
-		fi, err := fs.Stat(fsrv.fileSystem, strings.Join(parts[:i+1], separator))
+		fi, err := os.Stat(strings.Join(parts[:i+1], separator))
 		if err != nil {
 			return originalErr
 		}
 		if !fi.IsDir() {
-			return fs.ErrNotExist
+			return os.ErrNotExist
 		}
 	}
 
@@ -613,21 +545,6 @@ func (wr statusOverrideResponseWriter) WriteHeader(int) {
 	wr.ResponseWriter.WriteHeader(wr.code)
 }
 
-// osFS is a simple fs.FS implementation that uses the local
-// file system. (We do not use os.DirFS because we do our own
-// rooting or path prefixing without being constrained to a single
-// root folder. The standard os.DirFS implementation is problematic
-// since roots can be dynamic in our application.)
-//
-// osFS also implements fs.StatFS, fs.GlobFS, fs.ReadDirFS, and fs.ReadFileFS.
-type osFS struct{}
-
-func (osFS) Open(name string) (fs.File, error)          { return os.Open(name) }
-func (osFS) Stat(name string) (fs.FileInfo, error)      { return os.Stat(name) }
-func (osFS) Glob(pattern string) ([]string, error)      { return filepath.Glob(pattern) }
-func (osFS) ReadDir(name string) ([]fs.DirEntry, error) { return os.ReadDir(name) }
-func (osFS) ReadFile(name string) ([]byte, error)       { return os.ReadFile(name) }
-
 var defaultIndexNames = []string{"index.html", "index.txt"}
 
 const (
@@ -639,9 +556,4 @@ const (
 var (
 	_ caddy.Provisioner           = (*FileServer)(nil)
 	_ caddyhttp.MiddlewareHandler = (*FileServer)(nil)
-
-	_ fs.StatFS     = (*osFS)(nil)
-	_ fs.GlobFS     = (*osFS)(nil)
-	_ fs.ReadDirFS  = (*osFS)(nil)
-	_ fs.ReadFileFS = (*osFS)(nil)
 )

modules/caddyhttp/fileserver/testdata/foodir/bar.txt

@@ -1 +0,0 @@
-foodir/bar.txt

modules/caddyhttp/headers/headers.go

@@ -118,16 +118,10 @@ type HeaderOps struct {
 	// Sets HTTP headers; replaces existing header fields.
 	Set http.Header `json:"set,omitempty"`
 
-	// Names of HTTP header fields to delete. Basic wildcards are supported:
-	//
-	// - Start with `*` for all field names with the given suffix;
-	// - End with `*` for all field names with the given prefix;
-	// - Start and end with `*` for all field names containing a substring.
+	// Names of HTTP header fields to delete.
 	Delete []string `json:"delete,omitempty"`
 
-	// Performs in-situ substring replacements of HTTP headers.
-	// Keys are the field names on which to perform the associated replacements.
-	// If the field name is `*`, the replacements are performed on all header fields.
+	// Performs substring replacements of HTTP headers in-situ.
 	Replace map[string][]Replacement `json:"replace,omitempty"`
 }
 
@@ -194,60 +188,38 @@ type RespHeaderOps struct {
 func (ops HeaderOps) ApplyTo(hdr http.Header, repl *caddy.Replacer) {
 	// add
 	for fieldName, vals := range ops.Add {
-		fieldName = repl.ReplaceKnown(fieldName, "")
+		fieldName = repl.ReplaceAll(fieldName, "")
 		for _, v := range vals {
-			hdr.Add(fieldName, repl.ReplaceKnown(v, ""))
+			hdr.Add(fieldName, repl.ReplaceAll(v, ""))
 		}
 	}
 
 	// set
 	for fieldName, vals := range ops.Set {
-		fieldName = repl.ReplaceKnown(fieldName, "")
+		fieldName = repl.ReplaceAll(fieldName, "")
 		var newVals []string
 		for i := range vals {
 			// append to new slice so we don't overwrite
 			// the original values in ops.Set
-			newVals = append(newVals, repl.ReplaceKnown(vals[i], ""))
+			newVals = append(newVals, repl.ReplaceAll(vals[i], ""))
 		}
 		hdr.Set(fieldName, strings.Join(newVals, ","))
 	}
 
 	// delete
 	for _, fieldName := range ops.Delete {
-		fieldName = strings.ToLower(repl.ReplaceKnown(fieldName, ""))
-		switch {
-		case strings.HasPrefix(fieldName, "*") && strings.HasSuffix(fieldName, "*"):
-			for existingField := range hdr {
-				if strings.Contains(strings.ToLower(existingField), fieldName[1:len(fieldName)-1]) {
-					delete(hdr, existingField)
-				}
-			}
-		case strings.HasPrefix(fieldName, "*"):
-			for existingField := range hdr {
-				if strings.HasSuffix(strings.ToLower(existingField), fieldName[1:]) {
-					delete(hdr, existingField)
-				}
-			}
-		case strings.HasSuffix(fieldName, "*"):
-			for existingField := range hdr {
-				if strings.HasPrefix(strings.ToLower(existingField), fieldName[:len(fieldName)-1]) {
-					delete(hdr, existingField)
-				}
-			}
-		default:
-			hdr.Del(fieldName)
-		}
+		hdr.Del(repl.ReplaceAll(fieldName, ""))
 	}
 
 	// replace
 	for fieldName, replacements := range ops.Replace {
-		fieldName = http.CanonicalHeaderKey(repl.ReplaceKnown(fieldName, ""))
+		fieldName = http.CanonicalHeaderKey(repl.ReplaceAll(fieldName, ""))
 
 		// all fields...
 		if fieldName == "*" {
 			for _, r := range replacements {
-				search := repl.ReplaceKnown(r.Search, "")
-				replace := repl.ReplaceKnown(r.Replace, "")
+				search := repl.ReplaceAll(r.Search, "")
+				replace := repl.ReplaceAll(r.Replace, "")
 				for fieldName, vals := range hdr {
 					for i := range vals {
 						if r.re != nil {
@@ -263,8 +235,8 @@ func (ops HeaderOps) ApplyTo(hdr http.Header, repl *caddy.Replacer) {
 
 		// ...or only with the named field
 		for _, r := range replacements {
-			search := repl.ReplaceKnown(r.Search, "")
-			replace := repl.ReplaceKnown(r.Replace, "")
+			search := repl.ReplaceAll(r.Search, "")
+			replace := repl.ReplaceAll(r.Replace, "")
 			for hdrFieldName, vals := range hdr {
 				// see issue #4330 for why we don't simply use hdr[fieldName]
 				if http.CanonicalHeaderKey(hdrFieldName) != fieldName {

modules/caddyhttp/headers/headers_test.go

@@ -79,26 +79,6 @@ func TestHandler(t *testing.T) {
 				"Keep-Me": []string{"i swear i'm innocent"},
 			},
 		},
-		{
-			handler: Handler{
-				Request: &HeaderOps{
-					Delete: []string{
-						"*-suffix",
-						"prefix-*",
-						"*_*",
-					},
-				},
-			},
-			reqHeader: http.Header{
-				"Header-Suffix": []string{"lalala"},
-				"Prefix-Test":   []string{"asdf"},
-				"Host_Header":   []string{"silly django... sigh"}, // see issue #4830
-				"Keep-Me":       []string{"foofoofoo"},
-			},
-			expectedReqHeader: http.Header{
-				"Keep-Me": []string{"foofoofoo"},
-			},
-		},
 		{
 			handler: Handler{
 				Request: &HeaderOps{

modules/caddyhttp/logging.go

@@ -1,144 +0,0 @@
-// Copyright 2015 Matthew Holt and The Caddy Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package caddyhttp
-
-import (
-	"errors"
-	"net"
-	"net/http"
-	"strings"
-
-	"go.uber.org/zap"
-	"go.uber.org/zap/zapcore"
-)
-
-// ServerLogConfig describes a server's logging configuration. If
-// enabled without customization, all requests to this server are
-// logged to the default logger; logger destinations may be
-// customized per-request-host.
-type ServerLogConfig struct {
-	// The default logger name for all logs emitted by this server for
-	// hostnames that are not in the LoggerNames (logger_names) map.
-	DefaultLoggerName string `json:"default_logger_name,omitempty"`
-
-	// LoggerNames maps request hostnames to a custom logger name.
-	// For example, a mapping of "example.com" to "example" would
-	// cause access logs from requests with a Host of example.com
-	// to be emitted by a logger named "http.log.access.example".
-	LoggerNames map[string]string `json:"logger_names,omitempty"`
-
-	// By default, all requests to this server will be logged if
-	// access logging is enabled. This field lists the request
-	// hosts for which access logging should be disabled.
-	SkipHosts []string `json:"skip_hosts,omitempty"`
-
-	// If true, requests to any host not appearing in the
-	// LoggerNames (logger_names) map will not be logged.
-	SkipUnmappedHosts bool `json:"skip_unmapped_hosts,omitempty"`
-
-	// If true, credentials that are otherwise omitted, will be logged.
-	// The definition of credentials is defined by https://fetch.spec.whatwg.org/#credentials,
-	// and this includes some request and response headers, i.e `Cookie`,
-	// `Set-Cookie`, `Authorization`, and `Proxy-Authorization`.
-	ShouldLogCredentials bool `json:"should_log_credentials,omitempty"`
-}
-
-// wrapLogger wraps logger in a logger named according to user preferences for the given host.
-func (slc ServerLogConfig) wrapLogger(logger *zap.Logger, host string) *zap.Logger {
-	if loggerName := slc.getLoggerName(host); loggerName != "" {
-		return logger.Named(loggerName)
-	}
-	return logger
-}
-
-func (slc ServerLogConfig) getLoggerName(host string) string {
-	tryHost := func(key string) (string, bool) {
-		// first try exact match
-		if loggerName, ok := slc.LoggerNames[key]; ok {
-			return loggerName, ok
-		}
-		// strip port and try again (i.e. Host header of "example.com:1234" should
-		// match "example.com" if there is no "example.com:1234" in the map)
-		hostOnly, _, err := net.SplitHostPort(key)
-		if err != nil {
-			return "", false
-		}
-		loggerName, ok := slc.LoggerNames[hostOnly]
-		return loggerName, ok
-	}
-
-	// try the exact hostname first
-	if loggerName, ok := tryHost(host); ok {
-		return loggerName
-	}
-
-	// try matching wildcard domains if other non-specific loggers exist
-	labels := strings.Split(host, ".")
-	for i := range labels {
-		if labels[i] == "" {
-			continue
-		}
-		labels[i] = "*"
-		wildcardHost := strings.Join(labels, ".")
-		if loggerName, ok := tryHost(wildcardHost); ok {
-			return loggerName
-		}
-	}
-
-	return slc.DefaultLoggerName
-}
-
-func (slc *ServerLogConfig) clone() *ServerLogConfig {
-	clone := &ServerLogConfig{
-		DefaultLoggerName:    slc.DefaultLoggerName,
-		LoggerNames:          make(map[string]string),
-		SkipHosts:            append([]string{}, slc.SkipHosts...),
-		SkipUnmappedHosts:    slc.SkipUnmappedHosts,
-		ShouldLogCredentials: slc.ShouldLogCredentials,
-	}
-	for k, v := range slc.LoggerNames {
-		clone.LoggerNames[k] = v
-	}
-	return clone
-}
-
-// errLogValues inspects err and returns the status code
-// to use, the error log message, and any extra fields.
-// If err is a HandlerError, the returned values will
-// have richer information.
-func errLogValues(err error) (status int, msg string, fields []zapcore.Field) {
-	var handlerErr HandlerError
-	if errors.As(err, &handlerErr) {
-		status = handlerErr.StatusCode
-		if handlerErr.Err == nil {
-			msg = err.Error()
-		} else {
-			msg = handlerErr.Err.Error()
-		}
-		fields = []zapcore.Field{
-			zap.Int("status", handlerErr.StatusCode),
-			zap.String("err_id", handlerErr.ID),
-			zap.String("err_trace", handlerErr.Trace),
-		}
-		return
-	}
-	status = http.StatusInternalServerError
-	msg = err.Error()
-	return
-}
-
-// Variable name used to indicate that this request
-// should be omitted from the access logs
-const SkipLogVar = "skip_log"

modules/caddyhttp/map/caddyfile.go

@@ -27,10 +27,10 @@ func init() {
 
 // parseCaddyfile sets up the map handler from Caddyfile tokens. Syntax:
 //
-//	map [<matcher>] <source> <destinations...> {
-//	    [~]<input> <outputs...>
-//	    default    <defaults...>
-//	}
+//     map [<matcher>] <source> <destinations...> {
+//         [~]<input> <outputs...>
+//         default    <defaults...>
+//     }
 //
 // If the input value is prefixed with a tilde (~), then the input will be parsed as a
 // regular expression.
@@ -76,9 +76,9 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
 				continue
 			}
 
-			// every line maps an input value to one or more outputs
+			// every other line maps one input to one or more outputs
 			in := h.Val()
-			var outs []any
+			var outs []interface{}
 			for h.NextArg() {
 				val := h.ScalarVal()
 				if val == "-" {

modules/caddyhttp/map/map.go

@@ -62,9 +62,6 @@ func (Handler) CaddyModule() caddy.ModuleInfo {
 // Provision sets up h.
 func (h *Handler) Provision(_ caddy.Context) error {
 	for j, dest := range h.Destinations {
-		if strings.Count(dest, "{") != 1 || !strings.HasPrefix(dest, "{") {
-			return fmt.Errorf("destination must be a placeholder and only a placeholder")
-		}
 		h.Destinations[j] = strings.Trim(dest, "{}")
 	}
 
@@ -109,16 +106,6 @@ func (h *Handler) Validate() error {
 		}
 		seen[input] = i
 
-		// prevent infinite recursion
-		for _, out := range m.Outputs {
-			for _, dest := range h.Destinations {
-				if strings.Contains(caddy.ToString(out), dest) ||
-					strings.Contains(m.Input, dest) {
-					return fmt.Errorf("mapping %d requires value of {%s} to define value of {%s}: infinite recursion", i, dest, dest)
-				}
-			}
-		}
-
 		// ensure mappings have 1:1 output-to-destination correspondence
 		nOut := len(m.Outputs)
 		if nOut != nDest {
@@ -132,7 +119,7 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhtt
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(*caddy.Replacer)
 
 	// defer work until a variable is actually evaluated by using replacer's Map callback
-	repl.Map(func(key string) (any, bool) {
+	repl.Map(func(key string) (interface{}, bool) {
 		// return early if the variable is not even a configured destination
 		destIdx := h.destinationIndex(key)
 		if destIdx < 0 {
@@ -148,22 +135,21 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhtt
 			if output == nil {
 				continue
 			}
-			outputStr := caddy.ToString(output)
-
-			// evaluate regular expression if configured
 			if m.re != nil {
 				var result []byte
 				matches := m.re.FindStringSubmatchIndex(input)
 				if matches == nil {
 					continue
 				}
-				result = m.re.ExpandString(result, outputStr, input, matches)
+				result = m.re.ExpandString(result, output.(string), input, matches)
 				return string(result), true
 			}
-
-			// otherwise simple string comparison
 			if input == m.Input {
-				return repl.ReplaceAll(outputStr, ""), true
+				if outputStr, ok := output.(string); ok {
+					// NOTE: if the output has a placeholder that has the same key as the input, this is infinite recursion
+					return repl.ReplaceAll(outputStr, ""), true
+				}
+				return output, true
 			}
 		}
 
@@ -201,7 +187,7 @@ type Mapping struct {
 	// Upon a match with the input, each output is positionally correlated
 	// with each destination of the parent handler. An output that is null
 	// (nil) will be treated as if it was not mapped at all.
-	Outputs []any `json:"outputs,omitempty"`
+	Outputs []interface{} `json:"outputs,omitempty"`
 
 	re *regexp.Regexp
 }

modules/caddyhttp/map/map_test.go

@@ -15,7 +15,7 @@ func TestHandler(t *testing.T) {
 	for i, tc := range []struct {
 		handler Handler
 		reqURI  string
-		expect  map[string]any
+		expect  map[string]interface{}
 	}{
 		{
 			reqURI: "/foo",
@@ -25,11 +25,11 @@ func TestHandler(t *testing.T) {
 				Mappings: []Mapping{
 					{
 						Input:   "/foo",
-						Outputs: []any{"FOO"},
+						Outputs: []interface{}{"FOO"},
 					},
 				},
 			},
-			expect: map[string]any{
+			expect: map[string]interface{}{
 				"output": "FOO",
 			},
 		},
@@ -41,11 +41,11 @@ func TestHandler(t *testing.T) {
 				Mappings: []Mapping{
 					{
 						InputRegexp: "(/abc)",
-						Outputs:     []any{"ABC"},
+						Outputs:     []interface{}{"ABC"},
 					},
 				},
 			},
-			expect: map[string]any{
+			expect: map[string]interface{}{
 				"output": "ABC",
 			},
 		},
@@ -57,11 +57,11 @@ func TestHandler(t *testing.T) {
 				Mappings: []Mapping{
 					{
 						InputRegexp: "(xyz)",
-						Outputs:     []any{"...${1}..."},
+						Outputs:     []interface{}{"...${1}..."},
 					},
 				},
 			},
-			expect: map[string]any{
+			expect: map[string]interface{}{
 				"output": "...xyz...",
 			},
 		},
@@ -74,11 +74,11 @@ func TestHandler(t *testing.T) {
 				Mappings: []Mapping{
 					{
 						InputRegexp: "(?i)(\\^|`|<|>|%|\\\\|\\{|\\}|\\|)",
-						Outputs:     []any{"3"},
+						Outputs:     []interface{}{"3"},
 					},
 				},
 			},
-			expect: map[string]any{
+			expect: map[string]interface{}{
 				"output": "3",
 			},
 		},
@@ -90,11 +90,11 @@ func TestHandler(t *testing.T) {
 				Mappings: []Mapping{
 					{
 						Input:   "/foo",
-						Outputs: []any{"{testvar}"},
+						Outputs: []interface{}{"{testvar}"},
 					},
 				},
 			},
-			expect: map[string]any{
+			expect: map[string]interface{}{
 				"output": "testing",
 			},
 		},

modules/caddyhttp/matchers_test.go

@@ -158,10 +158,9 @@ func TestHostMatcher(t *testing.T) {
 
 func TestPathMatcher(t *testing.T) {
 	for i, tc := range []struct {
-		match        MatchPath // not URI-encoded because not parsing from a URI
-		input        string    // should be valid URI encoding (escaped) since it will become part of a request
-		expect       bool
-		provisionErr bool
+		match  MatchPath
+		input  string
+		expect bool
 	}{
 		{
 			match:  MatchPath{},
@@ -253,11 +252,6 @@ func TestPathMatcher(t *testing.T) {
 			input:  "/FOOOO",
 			expect: true,
 		},
-		{
-			match:  MatchPath{"*.php"},
-			input:  "/foo/index.php. .",
-			expect: true,
-		},
 		{
 			match:  MatchPath{"/foo/bar.txt"},
 			input:  "/foo/BAR.txt",
@@ -269,60 +263,10 @@ func TestPathMatcher(t *testing.T) {
 			expect: true,
 		},
 		{
-			match:  MatchPath{"/foo"},
+			match:  MatchPath{"/foo*"},
 			input:  "//foo",
 			expect: true,
 		},
-		{
-			match:  MatchPath{"//foo"},
-			input:  "/foo",
-			expect: false,
-		},
-		{
-			match:  MatchPath{"//foo"},
-			input:  "//foo",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo//*"},
-			input:  "/foo//bar",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo//*"},
-			input:  "/foo/%2Fbar",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo/%2F*"},
-			input:  "/foo/%2Fbar",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo/%2F*"},
-			input:  "/foo//bar",
-			expect: false,
-		},
-		{
-			match:  MatchPath{"/foo//bar"},
-			input:  "/foo//bar",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo/*//bar"},
-			input:  "/foo///bar",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo/%*//bar"},
-			input:  "/foo///bar",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo/%*//bar"},
-			input:  "/foo//%2Fbar",
-			expect: true,
-		},
 		{
 			match:  MatchPath{"/foo*"},
 			input:  "/%2F/foo",
@@ -348,79 +292,8 @@ func TestPathMatcher(t *testing.T) {
 			input:  "/foo/bar",
 			expect: true,
 		},
-		// notice these next three test cases are the same normalized path but are written differently
-		{
-			match:  MatchPath{"/%25@.txt"},
-			input:  "/%25@.txt",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/%25@.txt"},
-			input:  "/%25%40.txt",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/%25%40.txt"},
-			input:  "/%25%40.txt",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/bands/*/*"},
-			input:  "/bands/AC%2FDC/T.N.T",
-			expect: false, // because * operates in normalized space
-		},
-		{
-			match:  MatchPath{"/bands/%*/%*"},
-			input:  "/bands/AC%2FDC/T.N.T",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/bands/%*/%*"},
-			input:  "/bands/AC/DC/T.N.T",
-			expect: false,
-		},
-		{
-			match:  MatchPath{"/bands/%*"},
-			input:  "/bands/AC/DC",
-			expect: false, // not a suffix match
-		},
-		{
-			match:  MatchPath{"/bands/%*"},
-			input:  "/bands/AC%2FDC",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo%2fbar/baz"},
-			input:  "/foo%2Fbar/baz",
-			expect: true,
-		},
-		{
-			match:  MatchPath{"/foo%2fbar/baz"},
-			input:  "/foo/bar/baz",
-			expect: false,
-		},
-		{
-			match:  MatchPath{"/foo/bar/baz"},
-			input:  "/foo%2fbar/baz",
-			expect: true,
-		},
 	} {
-		err := tc.match.Provision(caddy.Context{})
-		if err == nil && tc.provisionErr {
-			t.Errorf("Test %d %v: Expected error provisioning, but there was no error", i, tc.match)
-		}
-		if err != nil && !tc.provisionErr {
-			t.Errorf("Test %d %v: Expected no error provisioning, but there was an error: %v", i, tc.match, err)
-		}
-		if tc.provisionErr {
-			continue // if it's not supposed to provision properly, pointless to test it
-		}
-
-		u, err := url.ParseRequestURI(tc.input)
-		if err != nil {
-			t.Fatalf("Test %d (%v): Invalid request URI (should be rejected by Go's HTTP server): %v", i, tc.input, err)
-		}
-		req := &http.Request{URL: u}
+		req := &http.Request{URL: &url.URL{Path: tc.input}}
 		repl := caddy.NewReplacer()
 		ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
 		req = req.WithContext(ctx)
@@ -514,16 +387,6 @@ func TestPathREMatcher(t *testing.T) {
 			expect:     true,
 			expectRepl: map[string]string{"name.myparam": "bar"},
 		},
-		{
-			match:  MatchPathRE{MatchRegexp{Pattern: "^/%@.txt"}},
-			input:  "/%25@.txt",
-			expect: true,
-		},
-		{
-			match:  MatchPathRE{MatchRegexp{Pattern: "^/%25@.txt"}},
-			input:  "/%25@.txt",
-			expect: false,
-		},
 	} {
 		// compile the regexp and validate its name
 		err := tc.match.Provision(caddy.Context{})
@@ -538,11 +401,7 @@ func TestPathREMatcher(t *testing.T) {
 		}
 
 		// set up the fake request and its Replacer
-		u, err := url.ParseRequestURI(tc.input)
-		if err != nil {
-			t.Fatalf("Test %d: Bad input URI: %v", i, err)
-		}
-		req := &http.Request{URL: u}
+		req := &http.Request{URL: &url.URL{Path: tc.input}}
 		repl := caddy.NewReplacer()
 		ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
 		req = req.WithContext(ctx)
@@ -765,9 +624,18 @@ func TestQueryMatcher(t *testing.T) {
 			input:    "/?somekey=1",
 			expect:   true,
 		},
+		{
+			scenario: "invalid query string",
+			match:    MatchQuery{"test": []string{"*"}},
+			input:    "/?test=1;",
+			expect:   false,
+		},
 	} {
-
-		u, _ := url.Parse(tc.input)
+		u, err := url.Parse(tc.input)
+		if err != nil {
+			t.Errorf("Test %d: Parsing URL: %v", i, err)
+			continue
+		}
 
 		req := &http.Request{URL: u}
 		repl := caddy.NewReplacer()
@@ -948,7 +816,7 @@ func TestVarREMatcher(t *testing.T) {
 			req := &http.Request{URL: new(url.URL), Method: http.MethodGet}
 			repl := caddy.NewReplacer()
 			ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
-			ctx = context.WithValue(ctx, VarsCtxKey, make(map[string]any))
+			ctx = context.WithValue(ctx, VarsCtxKey, make(map[string]interface{}))
 			req = req.WithContext(ctx)
 
 			addHTTPVarsToReplacer(repl, req, httptest.NewRecorder())

modules/caddyhttp/metrics.go

@@ -11,10 +11,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 )
 
-// Metrics configures metrics observations.
-// EXPERIMENTAL and subject to change or removal.
-type Metrics struct{}
-
 var httpMetrics = struct {
 	init             sync.Once
 	requestInFlight  *prometheus.GaugeVec

modules/caddyhttp/push/handler.go

@@ -29,24 +29,10 @@ func init() {
 	caddy.RegisterModule(Handler{})
 }
 
-// Handler is a middleware for HTTP/2 server push. Note that
-// HTTP/2 server push has been deprecated by some clients and
-// its use is discouraged unless you can accurately predict
-// which resources actually need to be pushed to the client;
-// it can be difficult to know what the client already has
-// cached. Pushing unnecessary resources results in worse
-// performance. Consider using HTTP 103 Early Hints instead.
-//
-// This handler supports pushing from Link headers; in other
-// words, if the eventual response has Link headers, this
-// handler will push the resources indicated by those headers,
-// even without specifying any resources in its config.
+// Handler is a middleware for manipulating the request body.
 type Handler struct {
-	// The resources to push.
-	Resources []Resource `json:"resources,omitempty"`
-
-	// Headers to modify for the push requests.
-	Headers *HeaderConfig `json:"headers,omitempty"`
+	Resources []Resource    `json:"resources,omitempty"`
+	Headers   *HeaderConfig `json:"headers,omitempty"`
 
 	logger *zap.Logger
 }
@@ -61,7 +47,7 @@ func (Handler) CaddyModule() caddy.ModuleInfo {
 
 // Provision sets up h.
 func (h *Handler) Provision(ctx caddy.Context) error {
-	h.logger = ctx.Logger()
+	h.logger = ctx.Logger(h)
 	if h.Headers != nil {
 		err := h.Headers.Provision(ctx)
 		if err != nil {

modules/caddyhttp/push/link.go

@@ -52,16 +52,17 @@ func parseLinkHeader(header string) []linkResource {
 		l.uri = strings.TrimSpace(link[li+1 : ri])
 
 		for _, param := range strings.Split(strings.TrimSpace(link[ri+1:]), semicolon) {
-			before, after, isCut := strings.Cut(strings.TrimSpace(param), equal)
-			key := strings.TrimSpace(before)
+			parts := strings.SplitN(strings.TrimSpace(param), equal, 2)
+			key := strings.TrimSpace(parts[0])
 			if key == "" {
 				continue
 			}
-			if isCut {
-				l.params[key] = strings.TrimSpace(after)
-			} else {
+			if len(parts) == 1 {
 				l.params[key] = key
 			}
+			if len(parts) == 2 {
+				l.params[key] = strings.TrimSpace(parts[1])
+			}
 		}
 
 		resources = append(resources, l)

modules/caddyhttp/replacer.go

@@ -57,7 +57,7 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 	SetVar(req.Context(), "start_time", time.Now())
 	SetVar(req.Context(), "uuid", new(requestID))
 
-	httpVars := func(key string) (any, bool) {
+	httpVars := func(key string) (interface{}, bool) {
 		if req != nil {
 			// query string parameters
 			if strings.HasPrefix(key, reqURIQueryReplPrefix) {
@@ -143,10 +143,6 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 			case "http.request.uri.path.dir":
 				dir, _ := path.Split(req.URL.Path)
 				return dir, true
-			case "http.request.uri.path.file.base":
-				return strings.TrimSuffix(path.Base(req.URL.Path), path.Ext(req.URL.Path)), true
-			case "http.request.uri.path.file.ext":
-				return path.Ext(req.URL.Path), true
 			case "http.request.uri.query":
 				return req.URL.RawQuery, true
 			case "http.request.duration":
@@ -173,7 +169,7 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 				req.Body = io.NopCloser(buf)  // replace real body with buffered data
 				return buf.String(), true
 
-			// original request, before any internal changes
+				// original request, before any internal changes
 			case "http.request.orig_method":
 				or, _ := req.Context().Value(OriginalRequestCtxKey).(http.Request)
 				return or.Method, true
@@ -237,7 +233,7 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 			// middleware variables
 			if strings.HasPrefix(key, varsReplPrefix) {
 				varName := key[len(varsReplPrefix):]
-				tbl := req.Context().Value(VarsCtxKey).(map[string]any)
+				tbl := req.Context().Value(VarsCtxKey).(map[string]interface{})
 				raw := tbl[varName]
 				// variables can be dynamic, so always return true
 				// even when it may not be set; treat as empty then
@@ -256,29 +252,13 @@ func addHTTPVarsToReplacer(repl *caddy.Replacer, req *http.Request, w http.Respo
 			}
 		}
 
-		switch {
-		case key == "http.shutting_down":
-			server := req.Context().Value(ServerCtxKey).(*Server)
-			server.shutdownAtMu.RLock()
-			defer server.shutdownAtMu.RUnlock()
-			return !server.shutdownAt.IsZero(), true
-		case key == "http.time_until_shutdown":
-			server := req.Context().Value(ServerCtxKey).(*Server)
-			server.shutdownAtMu.RLock()
-			defer server.shutdownAtMu.RUnlock()
-			if server.shutdownAt.IsZero() {
-				return nil, true
-			}
-			return time.Until(server.shutdownAt), true
-		}
-
 		return nil, false
 	}
 
 	repl.Map(httpVars)
 }
 
-func getReqTLSReplacement(req *http.Request, key string) (any, bool) {
+func getReqTLSReplacement(req *http.Request, key string) (interface{}, bool) {
 	if req == nil || req.TLS == nil {
 		return nil, false
 	}
@@ -299,7 +279,7 @@ func getReqTLSReplacement(req *http.Request, key string) (any, bool) {
 		if strings.HasPrefix(field, "client.san.") {
 			field = field[len("client.san."):]
 			var fieldName string
-			var fieldValue any
+			var fieldValue interface{}
 			switch {
 			case strings.HasPrefix(field, "dns_names"):
 				fieldName = "dns_names"
@@ -403,7 +383,7 @@ func getReqTLSReplacement(req *http.Request, key string) (any, bool) {
 }
 
 // marshalPublicKey returns the byte encoding of pubKey.
-func marshalPublicKey(pubKey any) ([]byte, error) {
+func marshalPublicKey(pubKey interface{}) ([]byte, error) {
 	switch key := pubKey.(type) {
 	case *rsa.PublicKey:
 		return asn1.Marshal(key)

modules/caddyhttp/replacer_test.go

@@ -27,7 +27,7 @@ import (
 )
 
 func TestHTTPVarReplacement(t *testing.T) {
-	req, _ := http.NewRequest(http.MethodGet, "/foo/bar.tar.gz", nil)
+	req, _ := http.NewRequest("GET", "/", nil)
 	repl := caddy.NewReplacer()
 	ctx := context.WithValue(req.Context(), caddy.ReplacerCtxKey, repl)
 	req = req.WithContext(ctx)
@@ -72,134 +72,114 @@ eqp31wM9il1n+guTNyxJd+FzVAH+hCZE5K+tCgVDdVFUlDEHHbS/wqb2PSIoouLV
 	addHTTPVarsToReplacer(repl, req, res)
 
 	for i, tc := range []struct {
-		get    string
+		input  string
 		expect string
 	}{
 		{
-			get:    "http.request.scheme",
+			input:  "{http.request.scheme}",
 			expect: "https",
 		},
 		{
-			get:    "http.request.method",
-			expect: http.MethodGet,
-		},
-		{
-			get:    "http.request.host",
+			input:  "{http.request.host}",
 			expect: "example.com",
 		},
 		{
-			get:    "http.request.port",
+			input:  "{http.request.port}",
 			expect: "80",
 		},
 		{
-			get:    "http.request.hostport",
+			input:  "{http.request.hostport}",
 			expect: "example.com:80",
 		},
 		{
-			get:    "http.request.remote.host",
+			input:  "{http.request.remote.host}",
 			expect: "localhost",
 		},
 		{
-			get:    "http.request.remote.port",
+			input:  "{http.request.remote.port}",
 			expect: "1234",
 		},
 		{
-			get:    "http.request.host.labels.0",
+			input:  "{http.request.host.labels.0}",
 			expect: "com",
 		},
 		{
-			get:    "http.request.host.labels.1",
+			input:  "{http.request.host.labels.1}",
 			expect: "example",
 		},
 		{
-			get:    "http.request.host.labels.2",
-			expect: "",
+			input:  "{http.request.host.labels.2}",
+			expect: "<empty>",
 		},
 		{
-			get:    "http.request.uri.path.file",
-			expect: "bar.tar.gz",
-		},
-		{
-			get:    "http.request.uri.path.file.base",
-			expect: "bar.tar",
-		},
-		{
-			// not ideal, but also most correct, given that files can have dots (example: index.<SHA>.html) TODO: maybe this isn't right..
-			get:    "http.request.uri.path.file.ext",
-			expect: ".gz",
-		},
-		{
-			get:    "http.request.tls.cipher_suite",
+			input:  "{http.request.tls.cipher_suite}",
 			expect: "TLS_AES_256_GCM_SHA384",
 		},
 		{
-			get:    "http.request.tls.proto",
+			input:  "{http.request.tls.proto}",
 			expect: "h2",
 		},
 		{
-			get:    "http.request.tls.proto_mutual",
+			input:  "{http.request.tls.proto_mutual}",
 			expect: "true",
 		},
 		{
-			get:    "http.request.tls.resumed",
+			input:  "{http.request.tls.resumed}",
 			expect: "false",
 		},
 		{
-			get:    "http.request.tls.server_name",
+			input:  "{http.request.tls.server_name}",
 			expect: "foo.com",
 		},
 		{
-			get:    "http.request.tls.version",
+			input:  "{http.request.tls.version}",
 			expect: "tls1.3",
 		},
 		{
-			get:    "http.request.tls.client.fingerprint",
+			input:  "{http.request.tls.client.fingerprint}",
 			expect: "9f57b7b497cceacc5459b76ac1c3afedbc12b300e728071f55f84168ff0f7702",
 		},
 		{
-			get:    "http.request.tls.client.issuer",
+			input:  "{http.request.tls.client.issuer}",
 			expect: "CN=Caddy Test CA",
 		},
 		{
-			get:    "http.request.tls.client.serial",
+			input:  "{http.request.tls.client.serial}",
 			expect: "2",
 		},
 		{
-			get:    "http.request.tls.client.subject",
+			input:  "{http.request.tls.client.subject}",
 			expect: "CN=client.localdomain",
 		},
 		{
-			get:    "http.request.tls.client.san.dns_names",
+			input:  "{http.request.tls.client.san.dns_names}",
 			expect: "[localhost]",
 		},
 		{
-			get:    "http.request.tls.client.san.dns_names.0",
+			input:  "{http.request.tls.client.san.dns_names.0}",
 			expect: "localhost",
 		},
 		{
-			get:    "http.request.tls.client.san.dns_names.1",
-			expect: "",
+			input:  "{http.request.tls.client.san.dns_names.1}",
+			expect: "<empty>",
 		},
 		{
-			get:    "http.request.tls.client.san.ips",
+			input:  "{http.request.tls.client.san.ips}",
 			expect: "[127.0.0.1]",
 		},
 		{
-			get:    "http.request.tls.client.san.ips.0",
+			input:  "{http.request.tls.client.san.ips.0}",
 			expect: "127.0.0.1",
 		},
 		{
-			get:    "http.request.tls.client.certificate_pem",
+			input:  "{http.request.tls.client.certificate_pem}",
 			expect: string(clientCert) + "\n", // returned value comes with a newline appended to it
 		},
 	} {
-		actual, got := repl.GetString(tc.get)
-		if !got {
-			t.Errorf("Test %d: Expected to recognize the placeholder name, but didn't", i)
-		}
+		actual := repl.ReplaceAll(tc.input, "<empty>")
 		if actual != tc.expect {
-			t.Errorf("Test %d: Expected %s to be '%s' but got '%s'",
-				i, tc.get, tc.expect, actual)
+			t.Errorf("Test %d: Expected placeholder %s to be '%s' but got '%s'",
+				i, tc.input, tc.expect, actual)
 		}
 	}
 }

modules/caddyhttp/responsewriter.go

@@ -62,16 +62,6 @@ func (rww *ResponseWriterWrapper) Push(target string, opts *http.PushOptions) er
 	return ErrNotImplemented
 }
 
-// ReadFrom implements io.ReaderFrom. It simply calls the underlying
-// ResponseWriter's ReadFrom method if there is one, otherwise it defaults
-// to io.Copy.
-func (rww *ResponseWriterWrapper) ReadFrom(r io.Reader) (n int64, err error) {
-	if rf, ok := rww.ResponseWriter.(io.ReaderFrom); ok {
-		return rf.ReadFrom(r)
-	}
-	return io.Copy(rww.ResponseWriter, r)
-}
-
 // HTTPInterfaces mix all the interfaces that middleware ResponseWriters need to support.
 type HTTPInterfaces interface {
 	http.ResponseWriter
@@ -121,15 +111,15 @@ type responseRecorder struct {
 //
 // Proper usage of a recorder looks like this:
 //
-//	rec := caddyhttp.NewResponseRecorder(w, buf, shouldBuffer)
-//	err := next.ServeHTTP(rec, req)
-//	if err != nil {
-//	    return err
-//	}
-//	if !rec.Buffered() {
-//	    return nil
-//	}
-//	// process the buffered response here
+//     rec := caddyhttp.NewResponseRecorder(w, buf, shouldBuffer)
+//     err := next.ServeHTTP(rec, req)
+//     if err != nil {
+//         return err
+//     }
+//     if !rec.Buffered() {
+//         return nil
+//     }
+//     // process the buffered response here
 //
 // The header map is not buffered; i.e. the ResponseRecorder's Header()
 // method returns the same header map of the underlying ResponseWriter.
@@ -139,7 +129,7 @@ type responseRecorder struct {
 // Once you are ready to write the response, there are two ways you can
 // do it. The easier way is to have the recorder do it:
 //
-//	rec.WriteResponse()
+//     rec.WriteResponse()
 //
 // This writes the recorded response headers as well as the buffered body.
 // Or, you may wish to do it yourself, especially if you manipulated the
@@ -148,12 +138,9 @@ type responseRecorder struct {
 // recorder's body buffer, but you might have your own body to write
 // instead):
 //
-//	w.WriteHeader(rec.Status())
-//	io.Copy(w, rec.Buffer())
+//     w.WriteHeader(rec.Status())
+//     io.Copy(w, rec.Buffer())
 //
-// As a special case, 1xx responses are not buffered nor recorded
-// because they are not the final response; they are passed through
-// directly to the underlying ResponseWriter.
 func NewResponseRecorder(w http.ResponseWriter, buf *bytes.Buffer, shouldBuffer ShouldBufferFunc) ResponseRecorder {
 	return &responseRecorder{
 		ResponseWriterWrapper: &ResponseWriterWrapper{ResponseWriter: w},
@@ -162,29 +149,22 @@ func NewResponseRecorder(w http.ResponseWriter, buf *bytes.Buffer, shouldBuffer
 	}
 }
 
-// WriteHeader writes the headers with statusCode to the wrapped
-// ResponseWriter unless the response is to be buffered instead.
-// 1xx responses are never buffered.
 func (rr *responseRecorder) WriteHeader(statusCode int) {
 	if rr.wroteHeader {
 		return
 	}
+	rr.statusCode = statusCode
+	rr.wroteHeader = true
 
-	// 1xx responses aren't final; just informational
-	if statusCode < 100 || statusCode > 199 {
-		rr.statusCode = statusCode
-		rr.wroteHeader = true
-
-		// decide whether we should buffer the response
-		if rr.shouldBuffer == nil {
-			rr.stream = true
-		} else {
-			rr.stream = !rr.shouldBuffer(rr.statusCode, rr.ResponseWriterWrapper.Header())
-		}
+	// decide whether we should buffer the response
+	if rr.shouldBuffer == nil {
+		rr.stream = true
+	} else {
+		rr.stream = !rr.shouldBuffer(rr.statusCode, rr.ResponseWriterWrapper.Header())
 	}
 
-	// if informational or not buffered, immediately write header
-	if rr.stream || (100 <= statusCode && statusCode <= 199) {
+	// if not buffered, immediately write header
+	if rr.stream {
 		rr.ResponseWriterWrapper.WriteHeader(rr.statusCode)
 	}
 }
@@ -198,26 +178,9 @@ func (rr *responseRecorder) Write(data []byte) (int, error) {
 	} else {
 		n, err = rr.buf.Write(data)
 	}
-
-	rr.size += n
-	return n, err
-}
-
-func (rr *responseRecorder) ReadFrom(r io.Reader) (int64, error) {
-	rr.WriteHeader(http.StatusOK)
-	var n int64
-	var err error
-	if rr.stream {
-		if rf, ok := rr.ResponseWriter.(io.ReaderFrom); ok {
-			n, err = rf.ReadFrom(r)
-		} else {
-			n, err = io.Copy(rr.ResponseWriter, r)
-		}
-	} else {
-		n, err = rr.buf.ReadFrom(r)
+	if err == nil {
+		rr.size += n
 	}
-
-	rr.size += int(n)
 	return n, err
 }
 
@@ -278,10 +241,4 @@ type ShouldBufferFunc func(status int, header http.Header) bool
 var (
 	_ HTTPInterfaces   = (*ResponseWriterWrapper)(nil)
 	_ ResponseRecorder = (*responseRecorder)(nil)
-
-	// Implementing ReaderFrom can be such a significant
-	// optimization that it should probably be required!
-	// see PR #5022 (25%-50% speedup)
-	_ io.ReaderFrom = (*ResponseWriterWrapper)(nil)
-	_ io.ReaderFrom = (*responseRecorder)(nil)
 )

modules/caddyhttp/responsewriter_test.go

@@ -1,165 +0,0 @@
-package caddyhttp
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"net/http"
-	"strings"
-	"testing"
-)
-
-type responseWriterSpy interface {
-	http.ResponseWriter
-	Written() string
-	CalledReadFrom() bool
-}
-
-var (
-	_ responseWriterSpy = (*baseRespWriter)(nil)
-	_ responseWriterSpy = (*readFromRespWriter)(nil)
-)
-
-// a barebones http.ResponseWriter mock
-type baseRespWriter []byte
-
-func (brw *baseRespWriter) Write(d []byte) (int, error) {
-	*brw = append(*brw, d...)
-	return len(d), nil
-}
-func (brw *baseRespWriter) Header() http.Header        { return nil }
-func (brw *baseRespWriter) WriteHeader(statusCode int) {}
-func (brw *baseRespWriter) Written() string            { return string(*brw) }
-func (brw *baseRespWriter) CalledReadFrom() bool       { return false }
-
-// an http.ResponseWriter mock that supports ReadFrom
-type readFromRespWriter struct {
-	baseRespWriter
-	called bool
-}
-
-func (rf *readFromRespWriter) ReadFrom(r io.Reader) (int64, error) {
-	rf.called = true
-	return io.Copy(&rf.baseRespWriter, r)
-}
-
-func (rf *readFromRespWriter) CalledReadFrom() bool { return rf.called }
-
-func TestResponseWriterWrapperReadFrom(t *testing.T) {
-	tests := map[string]struct {
-		responseWriter responseWriterSpy
-		wantReadFrom   bool
-	}{
-		"no ReadFrom": {
-			responseWriter: &baseRespWriter{},
-			wantReadFrom:   false,
-		},
-		"has ReadFrom": {
-			responseWriter: &readFromRespWriter{},
-			wantReadFrom:   true,
-		},
-	}
-	for name, tt := range tests {
-		t.Run(name, func(t *testing.T) {
-			// what we expect middlewares to do:
-			type myWrapper struct {
-				*ResponseWriterWrapper
-			}
-
-			wrapped := myWrapper{
-				ResponseWriterWrapper: &ResponseWriterWrapper{ResponseWriter: tt.responseWriter},
-			}
-
-			const srcData = "boo!"
-			// hides everything but Read, since strings.Reader implements WriteTo it would
-			// take precedence over our ReadFrom.
-			src := struct{ io.Reader }{strings.NewReader(srcData)}
-
-			fmt.Println(name)
-			if _, err := io.Copy(wrapped, src); err != nil {
-				t.Errorf("Copy() err = %v", err)
-			}
-
-			if got := tt.responseWriter.Written(); got != srcData {
-				t.Errorf("data = %q, want %q", got, srcData)
-			}
-
-			if tt.responseWriter.CalledReadFrom() != tt.wantReadFrom {
-				if tt.wantReadFrom {
-					t.Errorf("ReadFrom() should have been called")
-				} else {
-					t.Errorf("ReadFrom() should not have been called")
-				}
-			}
-		})
-	}
-}
-
-func TestResponseRecorderReadFrom(t *testing.T) {
-	tests := map[string]struct {
-		responseWriter responseWriterSpy
-		shouldBuffer   bool
-		wantReadFrom   bool
-	}{
-		"buffered plain": {
-			responseWriter: &baseRespWriter{},
-			shouldBuffer:   true,
-			wantReadFrom:   false,
-		},
-		"streamed plain": {
-			responseWriter: &baseRespWriter{},
-			shouldBuffer:   false,
-			wantReadFrom:   false,
-		},
-		"buffered ReadFrom": {
-			responseWriter: &readFromRespWriter{},
-			shouldBuffer:   true,
-			wantReadFrom:   false,
-		},
-		"streamed ReadFrom": {
-			responseWriter: &readFromRespWriter{},
-			shouldBuffer:   false,
-			wantReadFrom:   true,
-		},
-	}
-	for name, tt := range tests {
-		t.Run(name, func(t *testing.T) {
-			var buf bytes.Buffer
-
-			rr := NewResponseRecorder(tt.responseWriter, &buf, func(status int, header http.Header) bool {
-				return tt.shouldBuffer
-			})
-
-			const srcData = "boo!"
-			// hides everything but Read, since strings.Reader implements WriteTo it would
-			// take precedence over our ReadFrom.
-			src := struct{ io.Reader }{strings.NewReader(srcData)}
-
-			if _, err := io.Copy(rr, src); err != nil {
-				t.Errorf("Copy() err = %v", err)
-			}
-
-			wantStreamed := srcData
-			wantBuffered := ""
-			if tt.shouldBuffer {
-				wantStreamed = ""
-				wantBuffered = srcData
-			}
-
-			if got := tt.responseWriter.Written(); got != wantStreamed {
-				t.Errorf("streamed data = %q, want %q", got, wantStreamed)
-			}
-			if got := buf.String(); got != wantBuffered {
-				t.Errorf("buffered data = %q, want %q", got, wantBuffered)
-			}
-
-			if tt.responseWriter.CalledReadFrom() != tt.wantReadFrom {
-				if tt.wantReadFrom {
-					t.Errorf("ReadFrom() should have been called")
-				} else {
-					t.Errorf("ReadFrom() should not have been called")
-				}
-			}
-		})
-	}
-}

modules/caddyhttp/reverseproxy/addresses.go

@@ -80,9 +80,9 @@ func parseUpstreamDialAddress(upstreamAddr string) (string, string, error) {
 		scheme, host, port = toURL.Scheme, toURL.Hostname(), toURL.Port()
 	} else {
 		// extract network manually, since caddy.ParseNetworkAddress() will always add one
-		if beforeSlash, afterSlash, slashFound := strings.Cut(upstreamAddr, "/"); slashFound {
-			network = strings.ToLower(strings.TrimSpace(beforeSlash))
-			upstreamAddr = afterSlash
+		if idx := strings.Index(upstreamAddr, "/"); idx >= 0 {
+			network = strings.ToLower(strings.TrimSpace(upstreamAddr[:idx]))
+			upstreamAddr = upstreamAddr[idx+1:]
 		}
 		var err error
 		host, port, err = net.SplitHostPort(upstreamAddr)
@@ -96,12 +96,6 @@ func parseUpstreamDialAddress(upstreamAddr string) (string, string, error) {
 		}
 	}
 
-	// special case network to support both unix and h2c at the same time
-	if network == "unix+h2c" {
-		network = "unix"
-		scheme = "h2c"
-	}
-
 	// for simplest possible config, we only need to include
 	// the network portion if the user specified one
 	if network != "" {

modules/caddyhttp/reverseproxy/admin.go

@@ -76,7 +76,7 @@ func (adminUpstreams) handleUpstreams(w http.ResponseWriter, r *http.Request) er
 
 	// Iterate over the upstream pool (needs to be fast)
 	var rangeErr error
-	hosts.Range(func(key, val any) bool {
+	hosts.Range(func(key, val interface{}) bool {
 		address, ok := key.(string)
 		if !ok {
 			rangeErr = caddy.APIError{