hardcoresushi/libgocryptfs
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reverse: transform long names in OpenDir

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This commit is contained in:
Jakob Unterwurzacher 2016-09-22 19:54:37 +02:00
parent b34a665da4
commit 35bcc2dca2
1 changed files with 13 additions and 5 deletions
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18
internal/fusefrontend_reverse/rfs.go
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@ -218,19 +218,27 @@ func (rfs *reverseFS) OpenDir(cipherPath string, context *fuse.Context) ([]fuse.
if entries == nil { if entries == nil {
return nil, status return nil, status
} }
// Virtual gocryptfs.diriv file
dirIVEntry := fuse.DirEntry{syscall.S_IFREG | 0400, nametransform.DirIVFilename}
virtualFiles := []fuse.DirEntry{dirIVEntry}
// Encrypt names // Encrypt names
dirIV := deriveDirIV(cipherPath) dirIV := deriveDirIV(cipherPath)
for i := range entries { for i := range entries {
var cName string
// ".gocryptfs.reverse.conf" in the root directory is mapped to "gocryptfs.conf" // ".gocryptfs.reverse.conf" in the root directory is mapped to "gocryptfs.conf"
if cipherPath == "" && entries[i].Name == configfile.ConfReverseName { if cipherPath == "" && entries[i].Name == configfile.ConfReverseName {
entries[i].Name = configfile.ConfDefaultName cName = configfile.ConfDefaultName
} else { } else {
entries[i].Name = rfs.nameTransform.EncryptName(entries[i].Name, dirIV) cName = rfs.nameTransform.EncryptName(entries[i].Name, dirIV)
if len(cName) > syscall.NAME_MAX {
cName = nametransform.HashLongName(cName)
dotNameFile := fuse.DirEntry{syscall.S_IFREG | 0600, cName + nametransform.LongNameSuffix}
virtualFiles = append(virtualFiles, dotNameFile)
} }
} }
// Add virtual gocryptfs.diriv entries[i].Name = cName
entries = append(entries, fuse.DirEntry{syscall.S_IFREG | 0400, nametransform.DirIVFilename}) }
entries = append(entries, virtualFiles...)
return entries, fuse.OK return entries, fuse.OK
} }