fileserver: do not double-escape paths (#4447)

modules/caddyhttp/caddyhttp.go

@@ -20,7 +20,6 @@ import (
 	"io"
 	"net"
 	"net/http"
-	"net/url"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -228,7 +227,6 @@ func StatusCodeMatches(actual, configured int) bool {
 // never be outside of root. The resulting path can be used
 // with the local file system.
 func SanitizedPathJoin(root, reqPath string) string {
-	reqPath, _ = url.PathUnescape(reqPath)
 	if root == "" {
 		root = "."
 	}

modules/caddyhttp/fileserver/browsetplcontext.go

@@ -43,11 +43,9 @@ func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root
 
 		isDir := f.IsDir() || isSymlinkTargetDir(f, root, urlPath)
 
-		u := url.URL{Path: url.PathEscape(name)}
-
 		// add the slash after the escape of path to avoid escaping the slash as well
 		if isDir {
-			u.Path += "/"
+			name += "/"
 			dirCount++
 		} else {
 			fileCount++
@@ -67,6 +65,8 @@ func (fsrv *FileServer) directoryListing(files []os.FileInfo, canGoUp bool, root
 			// was already set above.
 		}
 
+		u := url.URL{Path: "./" + name} // prepend with "./" to fix paths with ':' in the name
+
 		fileInfos = append(fileInfos, fileInfo{
 			IsDir:     isDir,
 			IsSymlink: fileIsSymlink,