From 6b5d977cce3a65f04f17c84aa9b2776b52487946 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Sun, 7 Feb 2016 11:29:54 +0100
Subject: Move OpenDir to fs_dir.go

---
 internal/fusefrontend/fs.go     | 67 +----------------------------------------
 internal/fusefrontend/fs_dir.go | 66 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+), 66 deletions(-)

(limited to 'internal/fusefrontend')

diff --git a/internal/fusefrontend/fs.go b/internal/fusefrontend/fs.go
index a15e004..f11c05e 100644
--- a/internal/fusefrontend/fs.go
+++ b/internal/fusefrontend/fs.go
@@ -72,72 +72,6 @@ func (fs *FS) GetAttr(name string, context *fuse.Context) (*fuse.Attr, fuse.Stat
 	return a, status
 }
 
-func (fs *FS) OpenDir(dirName string, context *fuse.Context) ([]fuse.DirEntry, fuse.Status) {
-	toggledlog.Debug.Printf("OpenDir(%s)", dirName)
-	cDirName, err := fs.encryptPath(dirName)
-	if err != nil {
-		return nil, fuse.ToStatus(err)
-	}
-	// Read ciphertext directory
-	cipherEntries, status := fs.FileSystem.OpenDir(cDirName, context)
-	if cipherEntries == nil {
-		return nil, status
-	}
-	// Get DirIV (stays nil if DirIV if off)
-	var cachedIV []byte
-	var cDirAbsPath string
-	if fs.args.DirIV {
-		// Read the DirIV once and use it for all later name decryptions
-		cDirAbsPath = filepath.Join(fs.args.Cipherdir, cDirName)
-		cachedIV, err = nametransform.ReadDirIV(cDirAbsPath)
-		if err != nil {
-			return nil, fuse.ToStatus(err)
-		}
-	}
-	// Filter and decrypt filenames
-	var plain []fuse.DirEntry
-	for i := range cipherEntries {
-		cName := cipherEntries[i].Name
-		if dirName == "" && cName == configfile.ConfDefaultName {
-			// silently ignore "gocryptfs.conf" in the top level dir
-			continue
-		}
-		if fs.args.DirIV && cName == nametransform.DirIVFilename {
-			// silently ignore "gocryptfs.diriv" everywhere if dirIV is enabled
-			continue
-		}
-
-		if fs.args.PlaintextNames {
-			plain = append(plain, cipherEntries[i])
-			continue
-		}
-
-		if fs.args.LongNames {
-			isLong := nametransform.IsLongName(cName)
-			if isLong == 1 {
-				cNameLong, err := nametransform.ReadLongName(filepath.Join(cDirAbsPath, cName))
-				if err != nil {
-					toggledlog.Warn.Printf("Could not read long name for file %s, skipping file", cName)
-					continue
-				}
-				cName = cNameLong
-			} else if isLong == 2 {
-				// ignore "gocryptfs.longname.*.name"
-				continue
-			}
-		}
-		name, err := fs.nameTransform.DecryptName(cName, cachedIV)
-		if err != nil {
-			toggledlog.Warn.Printf("Skipping invalid name '%s' in dir '%s': %s", cName, cDirName, err)
-			continue
-		}
-
-		cipherEntries[i].Name = name
-		plain = append(plain, cipherEntries[i])
-	}
-	return plain, status
-}
-
 // We always need read access to do read-modify-write cycles
 func (fs *FS) mangleOpenFlags(flags uint32) (newFlags int, writeOnly bool) {
 	newFlags = int(flags)
@@ -181,6 +115,7 @@ func (fs *FS) Create(path string, flags uint32, mode uint32, context *fuse.Conte
 	}
 	cBaseName := filepath.Base(cPath)
 	if fs.args.LongNames && nametransform.IsLongName(cBaseName) == 1 {
+		// Create the ".name" file before creating the content
 		err = fs.nameTransform.WriteLongName(filepath.Dir(cPath), cBaseName, filepath.Base(path))
 		if err != nil {
 			return nil, fuse.ToStatus(err)
diff --git a/internal/fusefrontend/fs_dir.go b/internal/fusefrontend/fs_dir.go
index aed501d..f1ade25 100644
--- a/internal/fusefrontend/fs_dir.go
+++ b/internal/fusefrontend/fs_dir.go
@@ -155,3 +155,69 @@ func (fs *FS) Rmdir(name string, context *fuse.Context) (code fuse.Status) {
 	fs.nameTransform.DirIVCache.Clear()
 	return fuse.OK
 }
+
+func (fs *FS) OpenDir(dirName string, context *fuse.Context) ([]fuse.DirEntry, fuse.Status) {
+	toggledlog.Debug.Printf("OpenDir(%s)", dirName)
+	cDirName, err := fs.encryptPath(dirName)
+	if err != nil {
+		return nil, fuse.ToStatus(err)
+	}
+	// Read ciphertext directory
+	cipherEntries, status := fs.FileSystem.OpenDir(cDirName, context)
+	if cipherEntries == nil {
+		return nil, status
+	}
+	// Get DirIV (stays nil if DirIV if off)
+	var cachedIV []byte
+	var cDirAbsPath string
+	if fs.args.DirIV {
+		// Read the DirIV once and use it for all later name decryptions
+		cDirAbsPath = filepath.Join(fs.args.Cipherdir, cDirName)
+		cachedIV, err = nametransform.ReadDirIV(cDirAbsPath)
+		if err != nil {
+			return nil, fuse.ToStatus(err)
+		}
+	}
+	// Filter and decrypt filenames
+	var plain []fuse.DirEntry
+	for i := range cipherEntries {
+		cName := cipherEntries[i].Name
+		if dirName == "" && cName == configfile.ConfDefaultName {
+			// silently ignore "gocryptfs.conf" in the top level dir
+			continue
+		}
+		if fs.args.DirIV && cName == nametransform.DirIVFilename {
+			// silently ignore "gocryptfs.diriv" everywhere if dirIV is enabled
+			continue
+		}
+
+		if fs.args.PlaintextNames {
+			plain = append(plain, cipherEntries[i])
+			continue
+		}
+
+		if fs.args.LongNames {
+			isLong := nametransform.IsLongName(cName)
+			if isLong == 1 {
+				cNameLong, err := nametransform.ReadLongName(filepath.Join(cDirAbsPath, cName))
+				if err != nil {
+					toggledlog.Warn.Printf("Could not read long name for file %s, skipping file", cName)
+					continue
+				}
+				cName = cNameLong
+			} else if isLong == 2 {
+				// ignore "gocryptfs.longname.*.name"
+				continue
+			}
+		}
+		name, err := fs.nameTransform.DecryptName(cName, cachedIV)
+		if err != nil {
+			toggledlog.Warn.Printf("Skipping invalid name '%s' in dir '%s': %s", cName, cDirName, err)
+			continue
+		}
+
+		cipherEntries[i].Name = name
+		plain = append(plain, cipherEntries[i])
+	}
+	return plain, status
+}
-- 
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