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authorJakob Unterwurzacher2020-08-15 15:05:25 +0200
committerJakob Unterwurzacher2020-08-15 15:05:25 +0200
commitb6580a87e52babf757c48dd03be21fae04279123 (patch)
tree1737cfa950b40c5e8d4b4cbe30e24b3c9914f671 /internal/fusefrontend_reverse
parent6d4f1a6888cafd218cb97bd11de6a7553d9bc8f1 (diff)
v2api/reverse: implement gocryptfs.conf mapping with -plaintextnames
Diffstat (limited to 'internal/fusefrontend_reverse')
-rw-r--r--internal/fusefrontend_reverse/node_dir_ops.go32
1 files changed, 31 insertions, 1 deletions
diff --git a/internal/fusefrontend_reverse/node_dir_ops.go b/internal/fusefrontend_reverse/node_dir_ops.go
index c48d884..5ec1e95 100644
--- a/internal/fusefrontend_reverse/node_dir_ops.go
+++ b/internal/fusefrontend_reverse/node_dir_ops.go
@@ -2,6 +2,7 @@ package fusefrontend_reverse
import (
"context"
+ "fmt"
"syscall"
"golang.org/x/sys/unix"
@@ -10,9 +11,11 @@ import (
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/rfjakob/gocryptfs/internal/configfile"
+ "github.com/rfjakob/gocryptfs/internal/cryptocore"
"github.com/rfjakob/gocryptfs/internal/nametransform"
"github.com/rfjakob/gocryptfs/internal/pathiv"
"github.com/rfjakob/gocryptfs/internal/syscallcompat"
+ "github.com/rfjakob/gocryptfs/internal/tlog"
)
// Readdir - FUSE call.
@@ -40,7 +43,7 @@ func (n *Node) Readdir(ctx context.Context) (stream fs.DirStream, errno syscall.
rn := n.rootNode()
if rn.args.PlaintextNames {
- panic("todo")
+ return n.readdirPlaintextnames(entries)
}
// Filter out excluded entries
@@ -79,3 +82,30 @@ func (n *Node) Readdir(ctx context.Context) (stream fs.DirStream, errno syscall.
entries = append(entries, virtualFiles...)
return fs.NewListDirStream(entries), 0
}
+
+func (n *Node) readdirPlaintextnames(entries []fuse.DirEntry) (stream fs.DirStream, errno syscall.Errno) {
+ rn := n.rootNode()
+ // If we are not the root dir or a custom config path was used, we don't
+ // need to map anything
+ if !n.isRoot() || rn.args.ConfigCustom {
+ return fs.NewListDirStream(entries), 0
+ }
+ // We are in the root dir and the default config file name
+ // ".gocryptfs.reverse.conf" is used. We map it to "gocryptfs.conf".
+ dupe := -1
+ for i := range entries {
+ if entries[i].Name == configfile.ConfReverseName {
+ entries[i].Name = configfile.ConfDefaultName
+ } else if entries[i].Name == configfile.ConfDefaultName {
+ dupe = i
+ }
+ }
+ if dupe >= 0 {
+ // Warn the user loudly: The gocryptfs.conf_NAME_COLLISION file will
+ // throw ENOENT errors that are hard to miss.
+ tlog.Warn.Printf("The file %q is mapped to %q and shadows another file. Please rename %q in directory %q.",
+ configfile.ConfReverseName, configfile.ConfDefaultName, configfile.ConfDefaultName, rn.args.Cipherdir)
+ entries[dupe].Name = "gocryptfs.conf_NAME_COLLISION_" + fmt.Sprintf("%d", cryptocore.RandUint64())
+ }
+ return fs.NewListDirStream(entries), 0
+}