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authorJakob Unterwurzacher2015-09-05 20:30:20 +0200
committerJakob Unterwurzacher2015-09-05 20:30:20 +0200
commit11fb037e7e7d84405b3bed9de2aa500e49d9502d (patch)
treef94eea4b2cccc1620b51f163837d26082e6cae58 /frontend/fe_dir.go
parent7e564f928fef80b0485210603a8aa58b14ca5109 (diff)
Cleanup and rename files
Diffstat (limited to 'frontend/fe_dir.go')
-rw-r--r--frontend/fe_dir.go133
1 files changed, 133 insertions, 0 deletions
diff --git a/frontend/fe_dir.go b/frontend/fe_dir.go
new file mode 100644
index 0000000..75b665b
--- /dev/null
+++ b/frontend/fe_dir.go
@@ -0,0 +1,133 @@
+package frontend
+
+// frontend sits between FUSE and ClueFS
+// and uses cryptfs for all crypto operations
+//
+// cryptfs
+// ^
+// |
+// v
+// FUSE <-> frontend <-> ClueFS
+//
+// This file handles directories
+
+import (
+ "fmt"
+ "github.com/rfjakob/gocryptfs/cryptfs"
+ "github.com/rfjakob/cluefs/lib/cluefs"
+ "bazil.org/fuse"
+ fusefs "bazil.org/fuse/fs"
+ "golang.org/x/net/context"
+)
+
+type Dir struct {
+ *cluefs.Dir
+
+ crfs *cryptfs.CryptFS
+}
+
+func NewDir(parent string, name string, fs *FS) *Dir {
+ fmt.Printf("NewDir parent=%s name=%s\n", parent, name)
+ return &Dir {
+ Dir: cluefs.NewDir(parent, name, fs.ClueFS),
+ crfs: fs.CryptFS,
+ }
+}
+
+func (d *Dir) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fusefs.Handle, error) {
+ fmt.Printf("Open\n")
+ h, err := d.Dir.Open(ctx, req, resp)
+ if err != nil {
+ return nil, err
+ }
+ clueDir := h.(*cluefs.Dir)
+
+ return &Dir {
+ Dir: clueDir,
+ crfs: d.crfs,
+ }, nil
+}
+
+func (d *Dir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (fusefs.Node, error) {
+ fmt.Printf("Lookup %s\n", req.Name)
+ req.Name = d.crfs.EncryptPath(req.Name)
+ node, err := d.Dir.Lookup(ctx, req, resp)
+ if err != nil {
+ return nil, err
+ }
+ clueDir, ok := node.(*cluefs.Dir)
+ if ok {
+ return &Dir {
+ Dir: clueDir,
+ crfs: d.crfs,
+ }, nil
+ } else {
+ resp.Attr.Size = d.crfs.PlainSize(resp.Attr.Size)
+ clueFile := node.(*cluefs.File)
+ return &File {
+ File: clueFile,
+ crfs: d.crfs,
+ }, nil
+ }
+}
+
+func (d *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+ fmt.Printf("ReadDirAll\n")
+ entries, err := d.Dir.ReadDirAll(ctx)
+ if err != nil {
+ return nil, err
+ }
+ var decrypted []fuse.Dirent
+ for _, e := range entries {
+ if e.Name == "." || e.Name == ".." {
+ decrypted = append(decrypted, e)
+ continue
+ }
+ newName, err := d.crfs.DecryptPath(e.Name)
+ if err != nil {
+ fmt.Printf("ReadDirAll: Error decoding \"%s\": %s\n", e.Name, err.Error())
+ continue
+ }
+ e.Name = newName
+ decrypted = append(decrypted, e)
+ }
+ return decrypted, nil
+}
+
+func (d *Dir) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fusefs.Node, error) {
+ fmt.Printf("Mkdir %s\n", req.Name)
+ req.Name = d.crfs.EncryptPath(req.Name)
+ n, err := d.Dir.Mkdir(ctx, req)
+ if err != nil {
+ return nil, err
+ }
+ clueDir := n.(*cluefs.Dir)
+ return &Dir {
+ Dir: clueDir,
+ crfs: d.crfs,
+ }, nil
+}
+
+func (d *Dir) Remove(ctx context.Context, req *fuse.RemoveRequest) error {
+ fmt.Printf("Remove\n")
+ req.Name = d.crfs.EncryptPath(req.Name)
+ return d.Dir.Remove(ctx, req)
+}
+
+func (d *Dir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fusefs.Node, fusefs.Handle, error) {
+ fmt.Printf("Create\n")
+
+ req.Flags, _ = fixFlags(req.Flags)
+
+ req.Name = d.crfs.EncryptPath(req.Name)
+ n, _, err := d.Dir.Create(ctx, req, resp)
+ if err != nil {
+ return nil, nil, err
+ }
+ clueFile := n.(*cluefs.File)
+ cryptFile := &File {
+ File: clueFile,
+ crfs: d.crfs,
+ }
+ return cryptFile, cryptFile, nil
+}