Initial commit of py

2022-09-24 04:00:32 +00:00
parent 849f6072f4
commit cc40380488
8 changed files with 4908 additions and 0 deletions
--- a/wrapper/toxencryptsave.py
+++ b/wrapper/toxencryptsave.py
@@ -0,0 +1,75 @@
+# -*- mode: python; indent-tabs-mode: nil; py-indent-offset: 4; coding: utf-8 -*-
+from ctypes import c_size_t, create_string_buffer, byref, c_int, ArgumentError, c_char_p, c_bool
+
+from wrapper import libtox
+from wrapper.toxencryptsave_enums_and_consts import *
+
+class ToxEncryptSave:
+
+    def __init__(self):
+        self.libtoxencryptsave = libtox.LibToxEncryptSave()
+
+    def is_data_encrypted(self, data):
+        """
+        Checks if given data is encrypted
+        """
+        func = self.libtoxencryptsave.tox_is_data_encrypted
+        func.restype = c_bool
+        result = func(c_char_p(bytes(data)))
+        return result
+
+    def pass_encrypt(self, data, password):
+        """
+        Encrypts the given data with the given password.
+
+        :return: output array
+        """
+        out = create_string_buffer(len(data) + TOX_PASS_ENCRYPTION_EXTRA_LENGTH)
+        tox_err_encryption = c_int()
+        self.libtoxencryptsave.tox_pass_encrypt(c_char_p(data),
+                                                c_size_t(len(data)),
+                                                c_char_p(bytes(password, 'utf-8')),
+                                                c_size_t(len(password)),
+                                                out,
+                                                byref(tox_err_encryption))
+        tox_err_encryption = tox_err_encryption.value
+        if tox_err_encryption == TOX_ERR_ENCRYPTION['OK']:
+            return out[:]
+        elif tox_err_encryption == TOX_ERR_ENCRYPTION['NULL']:
+            raise ArgumentError('Some input data, or maybe the output pointer, was null.')
+        elif tox_err_encryption == TOX_ERR_ENCRYPTION['KEY_DERIVATION_FAILED']:
+            raise RuntimeError('The crypto lib was unable to derive a key from the given passphrase, which is usually a'
+                               ' lack of memory issue. The functions accepting keys do not produce this error.')
+        elif tox_err_encryption == TOX_ERR_ENCRYPTION['FAILED']:
+            raise RuntimeError('The encryption itself failed.')
+
+    def pass_decrypt(self, data, password):
+        """
+        Decrypts the given data with the given password.
+
+        :return: output array
+        """
+        out = create_string_buffer(len(data) - TOX_PASS_ENCRYPTION_EXTRA_LENGTH)
+        tox_err_decryption = c_int()
+        self.libtoxencryptsave.tox_pass_decrypt(c_char_p(bytes(data)),
+                                                c_size_t(len(data)),
+                                                c_char_p(bytes(password, 'utf-8')),
+                                                c_size_t(len(password)),
+                                                out,
+                                                byref(tox_err_decryption))
+        tox_err_decryption = tox_err_decryption.value
+        if tox_err_decryption == TOX_ERR_DECRYPTION['OK']:
+            return out[:]
+        elif tox_err_decryption == TOX_ERR_DECRYPTION['NULL']:
+            raise ArgumentError('Some input data, or maybe the output pointer, was null.')
+        elif tox_err_decryption == TOX_ERR_DECRYPTION['INVALID_LENGTH']:
+            raise ArgumentError('The input data was shorter than TOX_PASS_ENCRYPTION_EXTRA_LENGTH bytes')
+        elif tox_err_decryption == TOX_ERR_DECRYPTION['BAD_FORMAT']:
+            raise ArgumentError('The input data is missing the magic number (i.e. wasn\'t created by this module, or is'
+                                ' corrupted)')
+        elif tox_err_decryption == TOX_ERR_DECRYPTION['KEY_DERIVATION_FAILED']:
+            raise RuntimeError('The crypto lib was unable to derive a key from the given passphrase, which is usually a'
+                               ' lack of memory issue. The functions accepting keys do not produce this error.')
+        elif tox_err_decryption == TOX_ERR_DECRYPTION['FAILED']:
+            raise RuntimeError('The encrypted byte array could not be decrypted. Either the data was corrupt or the '
+                               'password/key was incorrect.')