feat(serverHandler/mutate): use platform-specific normalized path

Author: marjune163

src/serverHandler/delete.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"net/http"
 	"os"
+	"path/filepath"
 )
 
 func (h *handler) deleteItems(authUserName, fsPrefix string, files []string, aliasSubItems []os.FileInfo, r *http.Request) bool {
@@ -23,7 +24,7 @@ func (h *handler) deleteItems(authUserName, fsPrefix string, files []string, ali
 		if containsItem(aliasSubItems, filename) {
 			continue
 		}
-		fsPath := fsPrefix + "/" + filename
+		fsPath := filepath.Join(fsPrefix, filename)
 		h.logMutate(authUserName, "delete", fsPath, r)
 		err := os.RemoveAll(fsPath)
 		if err != nil {

src/serverHandler/mkdir.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"net/http"
 	"os"
+	"path/filepath"
 	"strings"
 )
 
@@ -30,7 +31,7 @@ func (h *handler) mkdirs(authUserName, fsPrefix string, files []string, aliasSub
 			errs = append(errs, errors.New("mkdir: ignore path shadowed by alias "+filename))
 			continue
 		}
-		fsPath := fsPrefix + "/" + filename
+		fsPath := filepath.Join(fsPrefix, filename)
 		h.logMutate(authUserName, "mkdir", fsPath, r)
 		err := os.MkdirAll(fsPath, 0755)
 		if err != nil {

src/serverHandler/upload.go

@@ -8,7 +8,7 @@ import (
 	"mime/multipart"
 	"net/http"
 	"os"
-	"path"
+	"path/filepath"
 	"strconv"
 	"strings"
 )
@@ -163,7 +163,7 @@ func (h *handler) saveUploadFiles(authUserName, fsPrefix string, createDir, over
 			continue
 		}
 
-		fsPath := path.Clean(filePrefix + "/" + fsFilename)
+		fsPath := filepath.Join(filePrefix, fsFilename)
 		h.logUpload(authUserName, filename, fsPath, r)
 		file, err := os.OpenFile(fsPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0666)
 		if err != nil {