mirror of
https://github.com/caddyserver/caddy.git
synced 2025-10-31 02:27:19 -04:00
355 lines
11 KiB
Go
355 lines
11 KiB
Go
// 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 caddycmd
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"reflect"
|
|
"runtime"
|
|
"runtime/debug"
|
|
"strings"
|
|
|
|
"go.uber.org/zap"
|
|
|
|
"github.com/caddyserver/caddy/v2"
|
|
)
|
|
|
|
func cmdUpgrade(fl Flags) (int, error) {
|
|
_, nonstandard, _, err := getModules()
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("unable to enumerate installed plugins: %v", err)
|
|
}
|
|
pluginPkgs, err := getPluginPackages(nonstandard)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, err
|
|
}
|
|
|
|
return upgradeBuild(pluginPkgs, fl)
|
|
}
|
|
|
|
func splitModule(arg string) (module, version string, err error) {
|
|
const versionSplit = "@"
|
|
|
|
// accommodate module paths that have @ in them, but we can only tolerate that if there's also
|
|
// a version, otherwise we don't know if it's a version separator or part of the file path
|
|
lastVersionSplit := strings.LastIndex(arg, versionSplit)
|
|
if lastVersionSplit < 0 {
|
|
module = arg
|
|
} else {
|
|
module, version = arg[:lastVersionSplit], arg[lastVersionSplit+1:]
|
|
}
|
|
|
|
if module == "" {
|
|
err = fmt.Errorf("module name is required")
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func cmdAddPackage(fl Flags) (int, error) {
|
|
if len(fl.Args()) == 0 {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("at least one package name must be specified")
|
|
}
|
|
_, nonstandard, _, err := getModules()
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("unable to enumerate installed plugins: %v", err)
|
|
}
|
|
pluginPkgs, err := getPluginPackages(nonstandard)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, err
|
|
}
|
|
|
|
for _, arg := range fl.Args() {
|
|
module, version, err := splitModule(arg)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("invalid module name: %v", err)
|
|
}
|
|
// only allow a version to be specified if it's different from the existing version
|
|
if _, ok := pluginPkgs[module]; ok && !(version != "" && pluginPkgs[module].Version != version) {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("package is already added")
|
|
}
|
|
pluginPkgs[module] = pluginPackage{Version: version, Path: module}
|
|
}
|
|
|
|
return upgradeBuild(pluginPkgs, fl)
|
|
}
|
|
|
|
func cmdRemovePackage(fl Flags) (int, error) {
|
|
if len(fl.Args()) == 0 {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("at least one package name must be specified")
|
|
}
|
|
_, nonstandard, _, err := getModules()
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("unable to enumerate installed plugins: %v", err)
|
|
}
|
|
pluginPkgs, err := getPluginPackages(nonstandard)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, err
|
|
}
|
|
|
|
for _, arg := range fl.Args() {
|
|
module, _, err := splitModule(arg)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("invalid module name: %v", err)
|
|
}
|
|
if _, ok := pluginPkgs[module]; !ok {
|
|
// package does not exist
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("package is not added")
|
|
}
|
|
delete(pluginPkgs, arg)
|
|
}
|
|
|
|
return upgradeBuild(pluginPkgs, fl)
|
|
}
|
|
|
|
func upgradeBuild(pluginPkgs map[string]pluginPackage, fl Flags) (int, error) {
|
|
l := caddy.Log()
|
|
|
|
thisExecPath, err := os.Executable()
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("determining current executable path: %v", err)
|
|
}
|
|
thisExecStat, err := os.Stat(thisExecPath)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("retrieving current executable permission bits: %v", err)
|
|
}
|
|
if thisExecStat.Mode()&os.ModeSymlink == os.ModeSymlink {
|
|
symSource := thisExecPath
|
|
// we are a symlink; resolve it
|
|
thisExecPath, err = filepath.EvalSymlinks(thisExecPath)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("resolving current executable symlink: %v", err)
|
|
}
|
|
l.Info("this executable is a symlink", zap.String("source", symSource), zap.String("target", thisExecPath))
|
|
}
|
|
l.Info("this executable will be replaced", zap.String("path", thisExecPath))
|
|
|
|
// build the request URL to download this custom build
|
|
qs := url.Values{
|
|
"os": {runtime.GOOS},
|
|
"arch": {runtime.GOARCH},
|
|
}
|
|
for _, pkgInfo := range pluginPkgs {
|
|
qs.Add("p", pkgInfo.String())
|
|
}
|
|
|
|
// initiate the build
|
|
resp, err := downloadBuild(qs)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("download failed: %v", err)
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
// back up the current binary, in case something goes wrong we can replace it
|
|
backupExecPath := thisExecPath + ".tmp"
|
|
l.Info("build acquired; backing up current executable",
|
|
zap.String("current_path", thisExecPath),
|
|
zap.String("backup_path", backupExecPath))
|
|
err = os.Rename(thisExecPath, backupExecPath)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("backing up current binary: %v", err)
|
|
}
|
|
defer func() {
|
|
if err != nil {
|
|
err2 := os.Rename(backupExecPath, thisExecPath)
|
|
if err2 != nil {
|
|
l.Error("restoring original executable failed; will need to be restored manually",
|
|
zap.String("backup_path", backupExecPath),
|
|
zap.String("original_path", thisExecPath),
|
|
zap.Error(err2))
|
|
}
|
|
}
|
|
}()
|
|
|
|
// download the file; do this in a closure to close reliably before we execute it
|
|
err = writeCaddyBinary(thisExecPath, &resp.Body, thisExecStat)
|
|
if err != nil {
|
|
return caddy.ExitCodeFailedStartup, err
|
|
}
|
|
|
|
l.Info("download successful; displaying new binary details", zap.String("location", thisExecPath))
|
|
|
|
// use the new binary to print out version and module info
|
|
fmt.Print("\nModule versions:\n\n")
|
|
if err = listModules(thisExecPath); err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("download succeeded, but unable to execute 'caddy list-modules': %v", err)
|
|
}
|
|
fmt.Println("\nVersion:")
|
|
if err = showVersion(thisExecPath); err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("download succeeded, but unable to execute 'caddy version': %v", err)
|
|
}
|
|
fmt.Println()
|
|
|
|
// clean up the backup file
|
|
if !fl.Bool("keep-backup") {
|
|
if err = removeCaddyBinary(backupExecPath); err != nil {
|
|
return caddy.ExitCodeFailedStartup, fmt.Errorf("download succeeded, but unable to clean up backup binary: %v", err)
|
|
}
|
|
} else {
|
|
l.Info("skipped cleaning up the backup file", zap.String("backup_path", backupExecPath))
|
|
}
|
|
|
|
l.Info("upgrade successful; please restart any running Caddy instances", zap.String("executable", thisExecPath))
|
|
|
|
return caddy.ExitCodeSuccess, nil
|
|
}
|
|
|
|
func getModules() (standard, nonstandard, unknown []moduleInfo, err error) {
|
|
bi, ok := debug.ReadBuildInfo()
|
|
if !ok {
|
|
err = fmt.Errorf("no build info")
|
|
return
|
|
}
|
|
|
|
for _, modID := range caddy.Modules() {
|
|
modInfo, err := caddy.GetModule(modID)
|
|
if err != nil {
|
|
// that's weird, shouldn't happen
|
|
unknown = append(unknown, moduleInfo{caddyModuleID: modID, err: err})
|
|
continue
|
|
}
|
|
|
|
// to get the Caddy plugin's version info, we need to know
|
|
// the package that the Caddy module's value comes from; we
|
|
// 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())
|
|
if rv := reflect.ValueOf(iface); rv.Kind() == reflect.Ptr {
|
|
iface = reflect.New(reflect.TypeOf(iface).Elem()).Elem().Interface()
|
|
}
|
|
modPkgPath := reflect.TypeOf(iface).PkgPath()
|
|
|
|
// now we find the Go module that the Caddy module's package
|
|
// belongs to; we assume the Caddy module package path will
|
|
// be prefixed by its Go module path, and we will choose the
|
|
// longest matching prefix in case there are nested modules
|
|
var matched *debug.Module
|
|
for _, dep := range bi.Deps {
|
|
if strings.HasPrefix(modPkgPath, dep.Path) {
|
|
if matched == nil || len(dep.Path) > len(matched.Path) {
|
|
matched = dep
|
|
}
|
|
}
|
|
}
|
|
|
|
caddyModGoMod := moduleInfo{caddyModuleID: modID, goModule: matched}
|
|
|
|
if strings.HasPrefix(modPkgPath, caddy.ImportPath) {
|
|
standard = append(standard, caddyModGoMod)
|
|
} else {
|
|
nonstandard = append(nonstandard, caddyModGoMod)
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func listModules(path string) error {
|
|
cmd := exec.Command(path, "list-modules", "--versions", "--skip-standard")
|
|
cmd.Stdout = os.Stdout
|
|
cmd.Stderr = os.Stderr
|
|
return cmd.Run()
|
|
}
|
|
|
|
func showVersion(path string) error {
|
|
cmd := exec.Command(path, "version")
|
|
cmd.Stdout = os.Stdout
|
|
cmd.Stderr = os.Stderr
|
|
return cmd.Run()
|
|
}
|
|
|
|
func downloadBuild(qs url.Values) (*http.Response, error) {
|
|
l := caddy.Log()
|
|
l.Info("requesting build",
|
|
zap.String("os", qs.Get("os")),
|
|
zap.String("arch", qs.Get("arch")),
|
|
zap.Strings("packages", qs["p"]))
|
|
resp, err := http.Get(fmt.Sprintf("%s?%s", downloadPath, qs.Encode()))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("secure request failed: %v", err)
|
|
}
|
|
if resp.StatusCode >= 400 {
|
|
var details struct {
|
|
StatusCode int `json:"status_code"`
|
|
Error struct {
|
|
Message string `json:"message"`
|
|
ID string `json:"id"`
|
|
} `json:"error"`
|
|
}
|
|
err2 := json.NewDecoder(resp.Body).Decode(&details)
|
|
if err2 != nil {
|
|
return nil, fmt.Errorf("download and error decoding failed: HTTP %d: %v", resp.StatusCode, err2)
|
|
}
|
|
return nil, fmt.Errorf("download failed: HTTP %d: %s (id=%s)", resp.StatusCode, details.Error.Message, details.Error.ID)
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
func getPluginPackages(modules []moduleInfo) (map[string]pluginPackage, error) {
|
|
pluginPkgs := make(map[string]pluginPackage)
|
|
for _, mod := range modules {
|
|
if mod.goModule.Replace != nil {
|
|
return nil, fmt.Errorf("cannot auto-upgrade when Go module has been replaced: %s => %s",
|
|
mod.goModule.Path, mod.goModule.Replace.Path)
|
|
}
|
|
pluginPkgs[mod.goModule.Path] = pluginPackage{Version: mod.goModule.Version, Path: mod.goModule.Path}
|
|
}
|
|
return pluginPkgs, nil
|
|
}
|
|
|
|
func writeCaddyBinary(path string, body *io.ReadCloser, fileInfo os.FileInfo) error {
|
|
l := caddy.Log()
|
|
destFile, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, fileInfo.Mode())
|
|
if err != nil {
|
|
return fmt.Errorf("unable to open destination file: %v", err)
|
|
}
|
|
defer destFile.Close()
|
|
|
|
l.Info("downloading binary", zap.String("destination", path))
|
|
|
|
_, err = io.Copy(destFile, *body)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to download file: %v", err)
|
|
}
|
|
|
|
err = destFile.Sync()
|
|
if err != nil {
|
|
return fmt.Errorf("syncing downloaded file to device: %v", err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
const downloadPath = "https://caddyserver.com/api/download"
|
|
|
|
type pluginPackage struct {
|
|
Version string
|
|
Path string
|
|
}
|
|
|
|
func (p pluginPackage) String() string {
|
|
if p.Version == "" {
|
|
return p.Path
|
|
}
|
|
return p.Path + "@" + p.Version
|
|
}
|