Show undecryptable filenames if they match supplied glob

Resolves https://github.com/rfjakob/gocryptfs/issues/393

1 files changed, 11 insertions, 0 deletions

diff --git a/mount.go b/mount.go
index 5107bee..6d9dd8f 100644
--- a/mount.go
+++ b/mount.go
@@ -286,6 +286,17 @@ func initFuseFrontend(args *argContainer) (pfs pathfs.FileSystem, wipeKeys func(
 	cCore := cryptocore.New(masterkey, cryptoBackend, contentenc.DefaultIVBits, args.hkdf, args.forcedecode)
 	cEnc := contentenc.New(cCore, contentenc.DefaultBS, args.forcedecode)
 	nameTransform := nametransform.New(cCore.EMECipher, frontendArgs.LongNames, args.raw64)
+	// Init badname patterns
+	nameTransform.BadnamePatterns = make([]string, 0)
+	for _, pattern := range args.badname {
+		_, err := filepath.Match(pattern, "") // Make sure pattern is valid
+		if err != nil {
+			tlog.Fatal.Printf("-badname: invalid pattern %q supplied", pattern)
+			os.Exit(exitcodes.Usage)
+		} else {
+			nameTransform.BadnamePatterns = append(nameTransform.BadnamePatterns, pattern)
+		}
+	}
 	// After the crypto backend is initialized,
 	// we can purge the master key from memory.
 	for i := range masterkey {