fix: restore CHFS shared path compatibility

chfs-ng/internal/api/server.go

@@ -6,6 +6,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"html"
 	"image"
 	_ "image/gif"
 	_ "image/jpeg"
@@ -14,6 +15,7 @@ import (
 	"mime/multipart"
 	"net"
 	"net/http"
+	"net/url"
 	"os"
 	"path"
 	"path/filepath"
@@ -71,6 +73,7 @@ func (s *Server) Handler() http.Handler {
 	mux.HandleFunc("/chfs/search", s.search)
 	mux.HandleFunc("/chfs/downloaddir/", s.downloadDir)
 	mux.HandleFunc("/chfs/shared", s.shared)
+	mux.HandleFunc("/chfs/shared/", s.shared)
 	mux.HandleFunc("/chfs/preview", s.preview)
 	mux.HandleFunc("/", s.fileHandler)
 	return s.ipFilter(mux)
@@ -510,11 +513,53 @@ func (s *Server) search(w http.ResponseWriter, r *http.Request) {
 }
 
 func (s *Server) shared(w http.ResponseWriter, r *http.Request) {
-	file := strings.Trim(r.URL.Query().Get("file"), "/")
+	if r.URL.Path == "/chfs/shared" {
-	if file == "" {
+		location := "shared/"
-		file = strings.TrimPrefix(r.URL.Path, "/chfs/shared/")
+		if r.URL.RawQuery != "" {
+			location += "?" + r.URL.RawQuery
 		}
-	s.serveFile(w, r, file, true)
+		http.Redirect(w, r, location, http.StatusMovedPermanently)
+		return
+	}
+	p := strings.Trim(strings.TrimPrefix(r.URL.Path, "/chfs/shared/"), "/")
+	fi, err := s.Store.Stat(p)
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	if fi.IsDir() {
+		items, err := s.Store.List(p)
+		if err != nil {
+			http.NotFound(w, r)
+			return
+		}
+		w.Header().Set("Content-Disposition", `attachment;filename="shared"`)
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		_, _ = io.WriteString(w, "<pre>\n")
+		for _, item := range items {
+			name := item.Name()
+			href := url.PathEscape(name)
+			if item.IsDir() {
+				href += "/"
+			}
+			_, _ = fmt.Fprintf(w, "<a href=\"%s\">%s</a>\n", href, html.EscapeString(name)+func() string {
+				if item.IsDir() {
+					return "/"
+				}
+				return ""
+			}())
+		}
+		_, _ = io.WriteString(w, "</pre>\n")
+		return
+	}
+	f, err := s.Store.Open(p)
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	defer f.Close()
+	w.Header().Set("Content-Disposition", fmt.Sprintf(`attachment;filename="%s"`, fi.Name()))
+	http.ServeContent(w, r, fi.Name(), fi.ModTime(), f)
 }
 
 func (s *Server) preview(w http.ResponseWriter, r *http.Request) {