From 13dc7657ba0aac4da3f4b80ba231a919fdfae0f5 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Sat, 1 Aug 2020 20:47:59 +0200
Subject: v2api/reverse: move old fusefrontend_reverse out of the way

fusefrontend_reverse -> fusefrontend_reverse_v1api
---
 .../ctlsock_interface.go                           | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 internal/fusefrontend_reverse_v1api/ctlsock_interface.go

(limited to 'internal/fusefrontend_reverse_v1api/ctlsock_interface.go')

diff --git a/internal/fusefrontend_reverse_v1api/ctlsock_interface.go b/internal/fusefrontend_reverse_v1api/ctlsock_interface.go
new file mode 100644
index 0000000..f7b8afd
--- /dev/null
+++ b/internal/fusefrontend_reverse_v1api/ctlsock_interface.go
@@ -0,0 +1,38 @@
+package fusefrontend_reverse
+
+import (
+	"path/filepath"
+	"strings"
+
+	"golang.org/x/sys/unix"
+
+	"github.com/rfjakob/gocryptfs/internal/ctlsocksrv"
+	"github.com/rfjakob/gocryptfs/internal/pathiv"
+)
+
+var _ ctlsocksrv.Interface = &ReverseFS{} // Verify that interface is implemented.
+
+// EncryptPath implements ctlsock.Backend.
+// This is used for the control socket and for the "-exclude" logic.
+func (rfs *ReverseFS) EncryptPath(plainPath string) (string, error) {
+	if rfs.args.PlaintextNames || plainPath == "" {
+		return plainPath, nil
+	}
+	cipherPath := ""
+	parts := strings.Split(plainPath, "/")
+	for _, part := range parts {
+		dirIV := pathiv.Derive(cipherPath, pathiv.PurposeDirIV)
+		encryptedPart := rfs.nameTransform.EncryptName(part, dirIV)
+		if rfs.args.LongNames && len(encryptedPart) > unix.NAME_MAX {
+			encryptedPart = rfs.nameTransform.HashLongName(encryptedPart)
+		}
+		cipherPath = filepath.Join(cipherPath, encryptedPart)
+	}
+	return cipherPath, nil
+}
+
+// DecryptPath implements ctlsock.Backend
+func (rfs *ReverseFS) DecryptPath(cipherPath string) (string, error) {
+	p, err := rfs.decryptPath(cipherPath)
+	return p, err
+}
-- 
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