Major refactoring: Split up "cryptfs" into several internal packages

"git status" for reference:

deleted:    cryptfs/cryptfs.go
deleted:    cryptfs/names_core.go
modified:   integration_tests/cli_test.go
modified:   integration_tests/helpers.go
renamed:    cryptfs/config_file.go -> internal/configfile/config_file.go
renamed:    cryptfs/config_test.go -> internal/configfile/config_test.go
renamed:    cryptfs/config_test/.gitignore -> internal/configfile/config_test/.gitignore
renamed:    cryptfs/config_test/PlaintextNames.conf -> internal/configfile/config_test/PlaintextNames.conf
renamed:    cryptfs/config_test/StrangeFeature.conf -> internal/configfile/config_test/StrangeFeature.conf
renamed:    cryptfs/config_test/v1.conf -> internal/configfile/config_test/v1.conf
renamed:    cryptfs/config_test/v2.conf -> internal/configfile/config_test/v2.conf
renamed:    cryptfs/kdf.go -> internal/configfile/kdf.go
renamed:    cryptfs/kdf_test.go -> internal/configfile/kdf_test.go
renamed:    cryptfs/cryptfs_content.go -> internal/contentenc/content.go
new file:   internal/contentenc/content_api.go
renamed:    cryptfs/content_test.go -> internal/contentenc/content_test.go
renamed:    cryptfs/file_header.go -> internal/contentenc/file_header.go
renamed:    cryptfs/intrablock.go -> internal/contentenc/intrablock.go
renamed:    cryptfs/address_translation.go -> internal/contentenc/offsets.go
new file:   internal/cryptocore/crypto_api.go
renamed:    cryptfs/gcm_go1.4.go -> internal/cryptocore/gcm_go1.4.go
renamed:    cryptfs/gcm_go1.5.go -> internal/cryptocore/gcm_go1.5.go
renamed:    cryptfs/nonce.go -> internal/cryptocore/nonce.go
renamed:    cryptfs/openssl_aead.go -> internal/cryptocore/openssl_aead.go
renamed:    cryptfs/openssl_benchmark.bash -> internal/cryptocore/openssl_benchmark.bash
renamed:    cryptfs/openssl_test.go -> internal/cryptocore/openssl_test.go
new file:   internal/nametransform/name_api.go
new file:   internal/nametransform/names_core.go
renamed:    cryptfs/names_diriv.go -> internal/nametransform/names_diriv.go
renamed:    cryptfs/names_noiv.go -> internal/nametransform/names_noiv.go
renamed:    cryptfs/names_test.go -> internal/nametransform/names_test.go
new file:   internal/nametransform/pad16.go
renamed:    cryptfs/log.go -> internal/toggledlog/log.go
renamed:    cryptfs/log_go1.4.go -> internal/toggledlog/log_go1.4.go
renamed:    cryptfs/log_go1.5.go -> internal/toggledlog/log_go1.5.go
modified:   main.go
modified:   masterkey.go
modified:   pathfs_frontend/file.go
modified:   pathfs_frontend/file_holes.go
modified:   pathfs_frontend/fs.go
modified:   pathfs_frontend/fs_dir.go
modified:   pathfs_frontend/names.go
modified:   test.bash

1 files changed, 0 insertions, 63 deletions

diff --git a/cryptfs/names_noiv.go b/cryptfs/names_noiv.go
deleted file mode 100644
index 7eed4b8..0000000
--- a/cryptfs/names_noiv.go
+++ /dev/null
@@ -1,63 +0,0 @@
-package cryptfs
-
-import (
-	"strings"
-)
-
-const (
-	OpEncrypt = iota
-	OpDecrypt
-)
-
-// DecryptPathNoIV - decrypt path using CBC without any IV.
-// This function is deprecated by the the more secure DirIV variant and only retained
-// for compatability with old filesystems.
-func (be *CryptFS) DecryptPathNoIV(cipherPath string) (plainPath string, err error) {
-	plainPath, err = be.translatePathNoIV(cipherPath, OpDecrypt)
-	return plainPath, err
-}
-
-// EncryptPathNoIV - decrypt path using CBC without any IV.
-// This function is deprecated by the the more secure DirIV variant and only retained
-// for compatability with old filesystems.
-func (be *CryptFS) EncryptPathNoIV(plainPath string) (cipherPath string) {
-	cipherPath, _ = be.translatePathNoIV(plainPath, OpEncrypt)
-	return cipherPath
-}
-
-// translatePathZeroIV - encrypt or decrypt path using CBC with an all-zero IV.
-// Just splits the string on "/" and hands the parts to encryptName() / decryptName()
-func (be *CryptFS) translatePathNoIV(path string, op int) (string, error) {
-	var err error
-
-	// Empty string means root directory
-	if path == "" {
-		return path, err
-	}
-
-	zeroIV := make([]byte, DIRIV_LEN)
-
-	// Run operation on each path component
-	var translatedParts []string
-	parts := strings.Split(path, "/")
-	for _, part := range parts {
-		if part == "" {
-			// This happens on "/foo/bar/" on the front and on the end.
-			// Don't panic.
-			translatedParts = append(translatedParts, "")
-			continue
-		}
-		var newPart string
-		if op == OpEncrypt {
-			newPart = be.encryptName(part, zeroIV, false)
-		} else {
-			newPart, err = be.decryptName(part, zeroIV, false)
-			if err != nil {
-				return "", err
-			}
-		}
-		translatedParts = append(translatedParts, newPart)
-	}
-
-	return strings.Join(translatedParts, "/"), err
-}