Implement per-site index (#1906)

caddyhttp/browse/browse.go

@@ -252,7 +252,7 @@ func directoryListing(files []os.FileInfo, canGoUp bool, urlPath string, config
 	for _, f := range files {
 		name := f.Name()
 
-		for _, indexName := range staticfiles.IndexPages {
+		for _, indexName := range config.Fs.IndexPages {
 			if name == indexName {
 				hasIndexFile = true
 				break

caddyhttp/browse/setup.go

@@ -80,6 +80,7 @@ func browseParse(c *caddy.Controller) ([]Config, error) {
 		bc.Fs = staticfiles.FileServer{
 			Root:       http.Dir(cfg.Root),
 			Hide:       cfg.HiddenFiles,
+			IndexPages: cfg.IndexPages,
 		}
 
 		// Second argument would be the template file to use

caddyhttp/httpserver/plugin.go

@@ -27,6 +27,7 @@ import (
 
 	"github.com/mholt/caddy"
 	"github.com/mholt/caddy/caddyfile"
+	"github.com/mholt/caddy/caddyhttp/staticfiles"
 	"github.com/mholt/caddy/caddytls"
 )
 
@@ -155,6 +156,7 @@ func (h *httpContext) InspectServerBlocks(sourceFile string, serverBlocks []cadd
 					AltTLSSNIPort: altTLSSNIPort,
 				},
 				originCaddyfile: sourceFile,
+				IndexPages:      staticfiles.DefaultIndexPages,
 			}
 			h.saveConfig(key, cfg)
 		}
@@ -234,7 +236,7 @@ func GetConfig(c *caddy.Controller) *SiteConfig {
 	// we should only get here during tests because directive
 	// actions typically skip the server blocks where we make
 	// the configs
-	cfg := &SiteConfig{Root: Root, TLS: new(caddytls.Config)}
+	cfg := &SiteConfig{Root: Root, TLS: new(caddytls.Config), IndexPages: staticfiles.DefaultIndexPages}
 	ctx.saveConfig(key, cfg)
 	return cfg
 }

caddyhttp/httpserver/server.go

@@ -142,7 +142,7 @@ func NewServer(addr string, group []*SiteConfig) (*Server, error) {
 
 	// Compile custom middleware for every site (enables virtual hosting)
 	for _, site := range group {
-		stack := Handler(staticfiles.FileServer{Root: http.Dir(site.Root), Hide: site.HiddenFiles})
+		stack := Handler(staticfiles.FileServer{Root: http.Dir(site.Root), Hide: site.HiddenFiles, IndexPages: site.IndexPages})
 		for i := len(site.middleware) - 1; i >= 0; i-- {
 			stack = site.middleware[i](stack)
 		}

caddyhttp/httpserver/siteconfig.go

@@ -26,6 +26,9 @@ type SiteConfig struct {
 	// The address of the site
 	Addr Address
 
+	// The list of viable index page names of the site
+	IndexPages []string
+
 	// The hostname to bind listener to;
 	// defaults to Addr.Host
 	ListenHost string

caddyhttp/index/index.go

@@ -16,7 +16,7 @@ package index
 
 import (
 	"github.com/mholt/caddy"
-	"github.com/mholt/caddy/caddyhttp/staticfiles"
+	"github.com/mholt/caddy/caddyhttp/httpserver"
 )
 
 func init() {
@@ -29,6 +29,8 @@ func init() {
 func setupIndex(c *caddy.Controller) error {
 	var index []string
 
+	cfg := httpserver.GetConfig(c)
+
 	for c.Next() {
 		args := c.RemainingArgs()
 
@@ -40,7 +42,7 @@ func setupIndex(c *caddy.Controller) error {
 			index = append(index, in)
 		}
 
-		staticfiles.IndexPages = index
+		cfg.IndexPages = index
 	}
 
 	return nil

caddyhttp/index/index_test.go

@@ -18,6 +18,7 @@ import (
 	"testing"
 
 	"github.com/mholt/caddy"
+	"github.com/mholt/caddy/caddyhttp/httpserver"
 	"github.com/mholt/caddy/caddyhttp/staticfiles"
 )
 
@@ -31,7 +32,7 @@ func TestIndexIncompleteParams(t *testing.T) {
 }
 
 func TestIndex(t *testing.T) {
-	c := caddy.NewTestController("", "index a.html b.html c.html")
+	c := caddy.NewTestController("http", "index a.html b.html c.html")
 
 	err := setupIndex(c)
 	if err != nil {
@@ -40,14 +41,85 @@ func TestIndex(t *testing.T) {
 
 	expectedIndex := []string{"a.html", "b.html", "c.html"}
 
-	if len(staticfiles.IndexPages) != 3 {
+	siteConfig := httpserver.GetConfig(c)
-		t.Errorf("Expected 3 values, got %v", len(staticfiles.IndexPages))
+
+	if len(siteConfig.IndexPages) != len(expectedIndex) {
+		t.Errorf("Expected 3 values, got %v", len(siteConfig.IndexPages))
 	}
 
 	// Ensure ordering is correct
-	for i, actual := range staticfiles.IndexPages {
+	for i, actual := range siteConfig.IndexPages {
 		if actual != expectedIndex[i] {
 			t.Errorf("Expected value in position %d to be %v, got %v", i, expectedIndex[i], actual)
 		}
 	}
 }
+
+func TestMultiSiteIndexWithEitherHasDefault(t *testing.T) {
+	// TestIndex already covers the correctness of the directive
+	// when used on a single controller, so no need to verify test setupIndex again.
+	// This sets the stage for the actual verification.
+	customIndex := caddy.NewTestController("http", "index a.html b.html")
+
+	// setupIndex against customIdx should not pollute the
+	// index list for other controllers.
+	err := setupIndex(customIndex)
+	if err != nil {
+		t.Errorf("Expected no errors, got: %v", err)
+	}
+
+	// Represents a virtual host with no index directive.
+	defaultIndex := caddy.NewTestController("http", "")
+
+	// Not calling setupIndex because it guards against lack of arguments,
+	// and we need to ensure the site gets the default set of index pages.
+
+	siteConfig := httpserver.GetConfig(defaultIndex)
+
+	// In case the index directive is not used, the virtual host
+	// should receive staticfiles.DefaultIndexPages slice. The length, as checked here,
+	// and the values, as checked in the upcoming loop, should match.
+	if len(siteConfig.IndexPages) != len(staticfiles.DefaultIndexPages) {
+		t.Errorf("Expected %d values, got %d", len(staticfiles.DefaultIndexPages), len(siteConfig.IndexPages))
+	}
+
+	// Ensure values match the expected default index pages
+	for i, actual := range siteConfig.IndexPages {
+		if actual != staticfiles.DefaultIndexPages[i] {
+			t.Errorf("Expected value in position %d to be %v, got %v", i, staticfiles.DefaultIndexPages[i], actual)
+		}
+	}
+}
+
+func TestPerSiteIndexPageIsolation(t *testing.T) {
+	firstIndex := "first.html"
+	secondIndex := "second.html"
+
+	// Create two sites with different index page configurations
+	firstSite := caddy.NewTestController("http", "index first.html")
+	err := setupIndex(firstSite)
+	if err != nil {
+		t.Errorf("Expected no errors, got: %v", err)
+	}
+
+	secondSite := caddy.NewTestController("http", "index second.html")
+	err = setupIndex(secondSite)
+	if err != nil {
+		t.Errorf("Expected no errors, got: %v", err)
+	}
+
+	firstSiteConfig := httpserver.GetConfig(firstSite)
+	if firstSiteConfig.IndexPages[0] != firstIndex {
+		t.Errorf("Expected index for first site as %s, received %s", firstIndex, firstSiteConfig.IndexPages[0])
+	}
+
+	secondSiteConfig := httpserver.GetConfig(secondSite)
+	if secondSiteConfig.IndexPages[0] != secondIndex {
+		t.Errorf("Expected index for second site as %s, received %s", secondIndex, secondSiteConfig.IndexPages[0])
+	}
+
+	// They should have different index pages, as per the provided config.
+	if firstSiteConfig.IndexPages[0] == secondSiteConfig.IndexPages[0] {
+		t.Errorf("Expected different index pages for both sites, got %s for first and %s for second", firstSiteConfig.IndexPages[0], secondSiteConfig.IndexPages[0])
+	}
+}

caddyhttp/push/handler.go

@@ -19,7 +19,6 @@ import (
 	"strings"
 
 	"github.com/mholt/caddy/caddyhttp/httpserver"
-	"github.com/mholt/caddy/caddyhttp/staticfiles"
 )
 
 func (h Middleware) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
@@ -44,7 +43,7 @@ outer:
 		matches := httpserver.Path(urlPath).Matches(rule.Path)
 		// Also check IndexPages when requesting a directory
 		if !matches {
-			indexFile, isIndexFile := httpserver.IndexFile(h.Root, urlPath, staticfiles.IndexPages)
+			indexFile, isIndexFile := httpserver.IndexFile(h.Root, urlPath, h.indexPages)
 			if isIndexFile {
 				matches = httpserver.Path(indexFile).Matches(rule.Path)
 			}

caddyhttp/push/handler_test.go

@@ -394,6 +394,7 @@ func TestMiddlewareShouldPushIndexFile(t *testing.T) {
 			}},
 		},
 		Root:       http.Dir(root),
+		indexPages: []string{indexFile},
 	}
 
 	indexFilePath := filepath.Join(root, indexFile)

caddyhttp/push/push.go

@@ -39,6 +39,7 @@ type (
 		Next       httpserver.Handler
 		Rules      []Rule
 		Root       http.FileSystem
+		indexPages []string // will be injected from SiteConfig on setup
 	}
 
 	ruleOp func([]Resource)

caddyhttp/push/setup.go

@@ -50,7 +50,7 @@ func setup(c *caddy.Controller) error {
 
 	cfg := httpserver.GetConfig(c)
 	cfg.AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
-		return Middleware{Next: next, Rules: rules, Root: http.Dir(cfg.Root)}
+		return Middleware{Next: next, Rules: rules, Root: http.Dir(cfg.Root), indexPages: cfg.IndexPages}
 	})
 
 	return nil

caddyhttp/staticfiles/fileserver.go

@@ -45,6 +45,10 @@ import (
 type FileServer struct {
 	Root http.FileSystem // jailed access to the file system
 	Hide []string        // list of files for which to respond with "Not Found"
+
+	// A list of pages that may be understood as the "index" files to directories.
+	// Injected from *SiteConfig.
+	IndexPages []string
 }
 
 // ServeHTTP serves static files for r according to fs's configuration.
@@ -118,7 +122,7 @@ func (fs FileServer) serveFile(w http.ResponseWriter, r *http.Request) (int, err
 		// if an index file was explicitly requested, strip file name from the request
 		// ("/foo/index.html" -> "/foo/")
 		var requestPage = path.Base(urlCopy.Path)
-		for _, indexPage := range IndexPages {
+		for _, indexPage := range fs.IndexPages {
 			if requestPage == indexPage {
 				urlCopy.Path = urlCopy.Path[:len(urlCopy.Path)-len(indexPage)]
 				redir = true
@@ -134,7 +138,7 @@ func (fs FileServer) serveFile(w http.ResponseWriter, r *http.Request) (int, err
 
 	// use contents of an index file, if present, for directory requests
 	if d.IsDir() {
-		for _, indexPage := range IndexPages {
+		for _, indexPage := range fs.IndexPages {
 			indexPath := path.Join(reqPath, indexPage)
 			indexFile, err := fs.Root.Open(indexPath)
 			if err != nil {
@@ -253,9 +257,9 @@ func calculateEtag(d os.FileInfo) string {
 	return `"` + t + s + `"`
 }
 
-// IndexPages is a list of pages that may be understood as
+// DefaultIndexPages is a list of pages that may be understood as
 // the "index" files to directories.
-var IndexPages = []string{
+var DefaultIndexPages = []string{
 	"index.html",
 	"index.htm",
 	"index.txt",

caddyhttp/staticfiles/fileserver_test.go

@@ -38,6 +38,7 @@ func TestServeHTTP(t *testing.T) {
 	fileserver := FileServer{
 		Root:       http.Dir(filepath.Join(tmpWebRootDir, webrootName)),
 		Hide:       []string{"dir/hidden.html"},
+		IndexPages: DefaultIndexPages,
 	}
 
 	movedPermanently := "Moved Permanently"