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package fusefrontend_reverse
import (
"path/filepath"
"strings"
)
func (fs *FS) abs(relPath string, err error) (string, error) {
if err != nil {
return "", err
}
return filepath.Join(fs.args.Cipherdir, relPath), nil
}
const (
ENCRYPT = iota
DECRYPT
)
func (fs *FS) encryptPath(relPath string) (string, error) {
return fs.transformPath(relPath, ENCRYPT)
}
func (fs *FS) decryptPath(relPath string) (string, error) {
return fs.transformPath(relPath, DECRYPT)
}
func (fs *FS) transformPath(relPath string, direction int) (string, error) {
if fs.args.PlaintextNames {
return relPath, nil
}
var err error
var transformedParts []string
iv := make([]byte, 16)
parts := strings.Split(relPath, "/")
for _, part := range parts {
var transformedPart string
switch direction {
case ENCRYPT:
transformedPart = fs.nameTransform.EncryptName(part, iv)
case DECRYPT:
transformedPart, err = fs.nameTransform.DecryptName(part, iv)
if err != nil {
return "", err
}
default:
panic("bug: invalid direction value")
}
transformedParts = append(transformedParts, transformedPart)
}
return filepath.Join(transformedParts...), nil
}
func (fs *FS) isFiltered(relPath string) bool {
return false
}
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