From: Simon Ruderich <simon@ruderich.org>
Date: Wed, 2 Jun 2021 05:57:09 +0000 (+0200)
Subject: remote: permit syncing relative paths with leading dot
X-Git-Url: https://ruderich.org/simon/gitweb/?p=safcm%2Fsafcm.git;a=commitdiff_plain;h=ca3a64ec7f80ee21f167fd2b1b3de03349c65028

remote: permit syncing relative paths with leading dot

These are normally not used by safcm but the remote should still support
them.
---

diff --git a/remote/sync/files.go b/remote/sync/files.go
index 937f0e1..a11b77e 100644
--- a/remote/sync/files.go
+++ b/remote/sync/files.go
@@ -548,9 +548,12 @@ func OpenParentDirectoryNoSymlinks(path string) (int, string, error) {
 		}
 		dir = ".."
 		parts = []string{filepath.Base(wd)}
-	} else if parts[0] != "." {
+	} else {
 		// Relative path: start at the current directory
 		dir = "."
+		if parts[0] == "." {
+			parts = parts[1:]
+		}
 	}
 
 	dirFd, err := unix.Openat(unix.AT_FDCWD, dir, openReadonlyFlags, 0)
diff --git a/remote/sync/files_test.go b/remote/sync/files_test.go
index 3d19e7f..34751ae 100644
--- a/remote/sync/files_test.go
+++ b/remote/sync/files_test.go
@@ -2207,6 +2207,59 @@ func TestSyncFile(t *testing.T) {
 			fmt.Errorf("symlink not permitted in path: \"dir\""),
 		},
 
+		// Border cases
+
+		{
+			"relative path with leading dot",
+			safcm.MsgSyncReq{},
+			&safcm.File{
+				Path:      "./dir/file",
+				Mode:      0644,
+				Uid:       -1,
+				Gid:       -1,
+				OrigGroup: "group",
+				Data:      []byte("content"),
+			},
+			func() {
+				ft.CreateDirectory("dir", 0755)
+			},
+			true,
+			[]ft.File{
+				root,
+				{
+					Path: "dir",
+					Mode: fs.ModeDir | 0755,
+				},
+				{
+					Path: "dir/file",
+					Mode: 0644,
+					Data: []byte("content"),
+				},
+			},
+			safcm.MsgSyncResp{
+				FileChanges: []safcm.FileChange{
+					{
+						Path:    "./dir/file",
+						Created: true,
+						New: safcm.FileChangeInfo{
+							Mode:  0644,
+							User:  user,
+							Uid:   uid,
+							Group: group,
+							Gid:   gid,
+						},
+					},
+				},
+			},
+			[]string{
+				`4: files: "./dir/file" (group): will create`,
+				`3: files: "./dir/file" (group): creating`,
+				`4: files: "./dir/file" (group): creating temporary file "dir/.file*"`,
+				`4: files: "./dir/file" (group): renaming "dir/.fileRND"`,
+			},
+			nil,
+		},
+
 		// Diffs
 
 		{