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package pathfs_frontend
// This file forwards file encryption operations to cryptfs
import (
"github.com/rfjakob/gocryptfs/cryptfs"
)
// isFiltered - check if plaintext "path" should be forbidden
//
// Prevents name clashes with internal files when file names are not encrypted
func (fs *FS) isFiltered(path string) bool {
if !fs.args.PlaintextNames {
return false
}
// gocryptfs.conf in the root directory is forbidden
if path == cryptfs.ConfDefaultName {
cryptfs.Warn.Printf("The name /%s is reserved when -plaintextnames is used\n",
cryptfs.ConfDefaultName)
return true
}
// Note: gocryptfs.diriv is NOT forbidden because diriv and plaintextnames
// are exclusive
return false
}
// encryptPath - encrypt relative plaintext path
func (fs *FS) encryptPath(plainPath string) (string, error) {
if fs.args.PlaintextNames {
return plainPath, nil
}
if !fs.args.DirIV {
return fs.CryptFS.EncryptPathNoIV(plainPath), nil
}
fs.dirIVLock.RLock()
defer fs.dirIVLock.RUnlock()
return fs.CryptFS.EncryptPathDirIV(plainPath, fs.args.Cipherdir, fs.args.EMENames)
}
// decryptPath - decrypt relative ciphertext path
func (fs *FS) decryptPath(cipherPath string) (string, error) {
if fs.args.PlaintextNames {
return cipherPath, nil
}
if !fs.args.DirIV {
return fs.CryptFS.DecryptPathNoIV(cipherPath)
}
fs.dirIVLock.RLock()
defer fs.dirIVLock.RUnlock()
return fs.CryptFS.DecryptPathDirIV(cipherPath, fs.args.Cipherdir, fs.args.EMENames)
}
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