Implement new default cipher class AES256

test/units/TestVaultEditor.py

@@ -0,0 +1,141 @@
+#!/usr/bin/env python
+
+from unittest import TestCase
+import getpass
+import os
+import shutil
+import time
+import tempfile
+from binascii import unhexlify
+from binascii import hexlify
+from nose.plugins.skip import SkipTest
+
+from ansible import errors
+from ansible.utils.vault import VaultLib
+from ansible.utils.vault import VaultEditor
+
+# Counter import fails for 2.0.1, requires >= 2.6.1 from pip
+try:
+    from Crypto.Util import Counter
+    HAS_COUNTER = True
+except ImportError:
+    HAS_COUNTER = False
+
+# KDF import fails for 2.0.1, requires >= 2.6.1 from pip
+try:
+    from Crypto.Protocol.KDF import PBKDF2
+    HAS_PBKDF2 = True
+except ImportError:
+    HAS_PBKDF2 = False
+
+# AES IMPORTS
+try:
+    from Crypto.Cipher import AES as AES
+    HAS_AES = True
+except ImportError:
+    HAS_AES = False
+
+class TestVaultEditor(TestCase):
+
+    def test_methods_exist(self):
+        v = VaultEditor(None, None, None)
+        slots = ['create_file',
+                 'decrypt_file',
+                 'edit_file',
+                 'encrypt_file',
+                 'rekey_file',
+                 'read_data',
+                 'write_data',
+                 'shuffle_files']
+        for slot in slots:         
+            assert hasattr(v, slot), "VaultLib is missing the %s method" % slot
+
+    def test_decrypt_1_0(self):
+        if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
+            raise SkipTest
+        dirpath = tempfile.mkdtemp()
+        filename = os.path.join(dirpath, "foo-ansible-1.0.yml")
+        shutil.rmtree(dirpath)
+        shutil.copytree("vault_test_data", dirpath)
+        ve = VaultEditor(None, "ansible", filename)
+
+        # make sure the password functions for the cipher
+        error_hit = False
+        try:        
+            ve.decrypt_file()
+        except errors.AnsibleError, e:
+            error_hit = True
+
+        # verify decrypted content
+        f = open(filename, "rb")
+        fdata = f.read()
+        f.close()
+
+        shutil.rmtree(dirpath)
+        assert error_hit == False, "error decrypting 1.0 file"            
+        assert fdata.strip() == "foo", "incorrect decryption of 1.0 file: %s" % fdata.strip() 
+
+    def test_decrypt_1_1(self):
+        if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
+            raise SkipTest
+        dirpath = tempfile.mkdtemp()
+        filename = os.path.join(dirpath, "foo-ansible-1.1.yml")
+        shutil.rmtree(dirpath)
+        shutil.copytree("vault_test_data", dirpath)
+        ve = VaultEditor(None, "ansible", filename)
+
+        # make sure the password functions for the cipher
+        error_hit = False
+        try:        
+            ve.decrypt_file()
+        except errors.AnsibleError, e:
+            error_hit = True
+
+        # verify decrypted content
+        f = open(filename, "rb")
+        fdata = f.read()
+        f.close()
+
+        shutil.rmtree(dirpath)
+        assert error_hit == False, "error decrypting 1.0 file"            
+        assert fdata.strip() == "foo", "incorrect decryption of 1.0 file: %s" % fdata.strip() 
+
+
+    def test_rekey_migration(self):
+        if not HAS_AES or not HAS_COUNTER or not HAS_PBKDF2:
+            raise SkipTest
+        dirpath = tempfile.mkdtemp()
+        filename = os.path.join(dirpath, "foo-ansible-1.0.yml")
+        shutil.rmtree(dirpath)
+        shutil.copytree("vault_test_data", dirpath)
+        ve = VaultEditor(None, "ansible", filename)
+
+        # make sure the password functions for the cipher
+        error_hit = False
+        try:        
+            ve.rekey_file('ansible2')
+        except errors.AnsibleError, e:
+            error_hit = True
+
+        # verify decrypted content
+        f = open(filename, "rb")
+        fdata = f.read()
+        f.close()
+
+        shutil.rmtree(dirpath)
+        assert error_hit == False, "error rekeying 1.0 file to 1.1"            
+
+        # ensure filedata can be decrypted, is 1.1 and is AES256
+        vl = VaultLib("ansible2")
+        dec_data = None
+        error_hit = False
+        try:
+            dec_data = vl.decrypt(fdata)
+        except errors.AnsibleError, e:
+            error_hit = True
+
+        assert vl.cipher_name == "AES256", "wrong cipher name set after rekey: %s" % vl.cipher_name
+        assert error_hit == False, "error decrypting migrated 1.0 file"            
+        assert dec_data.strip() == "foo", "incorrect decryption of rekeyed/migrated file: %s" % dec_data
+
+