aboutsummaryrefslogtreecommitdiff
path: root/python/olm/outbound_group_session.py
diff options
context:
space:
mode:
Diffstat (limited to 'python/olm/outbound_group_session.py')
-rw-r--r--python/olm/outbound_group_session.py107
1 files changed, 107 insertions, 0 deletions
diff --git a/python/olm/outbound_group_session.py b/python/olm/outbound_group_session.py
new file mode 100644
index 0000000..56f0962
--- /dev/null
+++ b/python/olm/outbound_group_session.py
@@ -0,0 +1,107 @@
+import json
+
+from ._base import *
+
+lib.olm_outbound_group_session_size.argtypes = []
+lib.olm_outbound_group_session_size.restype = c_size_t
+
+lib.olm_outbound_group_session.argtypes = [c_void_p]
+lib.olm_outbound_group_session.restype = c_void_p
+
+lib.olm_outbound_group_session_last_error.argtypes = [c_void_p]
+lib.olm_outbound_group_session_last_error.restype = c_char_p
+
+def outbound_group_session_errcheck(res, func, args):
+ if res == ERR:
+ raise OlmError("%s: %s" % (
+ func.__name__, lib.olm_outbound_group_session_last_error(args[0])
+ ))
+ return res
+
+
+def outbound_group_session_function(func, *types):
+ func.argtypes = (c_void_p,) + types
+ func.restypes = c_size_t
+ func.errcheck = outbound_group_session_errcheck
+
+
+outbound_group_session_function(
+ lib.olm_pickle_outbound_group_session, c_void_p, c_size_t, c_void_p, c_size_t
+)
+outbound_group_session_function(
+ lib.olm_unpickle_outbound_group_session, c_void_p, c_size_t, c_void_p, c_size_t
+)
+
+outbound_group_session_function(lib.olm_init_outbound_group_session_random_length)
+outbound_group_session_function(lib.olm_init_outbound_group_session, c_void_p, c_size_t)
+
+lib.olm_outbound_group_session_message_index.argtypes = [c_void_p]
+lib.olm_outbound_group_session_message_index.restype = c_uint32
+
+outbound_group_session_function(lib.olm_group_encrypt_message_length, c_size_t)
+outbound_group_session_function(lib.olm_group_encrypt,
+ c_void_p, c_size_t, # Plaintext
+ c_void_p, c_size_t, # Message
+)
+
+outbound_group_session_function(lib.olm_outbound_group_session_id_length)
+outbound_group_session_function(lib.olm_outbound_group_session_id, c_void_p, c_size_t)
+outbound_group_session_function(lib.olm_outbound_group_session_key_length)
+outbound_group_session_function(lib.olm_outbound_group_session_key, c_void_p, c_size_t)
+
+
+class OutboundGroupSession(object):
+ def __init__(self):
+ self.buf = create_string_buffer(lib.olm_outbound_group_session_size())
+ self.ptr = lib.olm_outbound_group_session(self.buf)
+
+ random_length = lib.olm_init_outbound_group_session_random_length(self.ptr)
+ random = read_random(random_length)
+ random_buffer = create_string_buffer(random)
+ lib.olm_init_outbound_group_session(self.ptr, random_buffer, random_length)
+
+ def pickle(self, key):
+ key_buffer = create_string_buffer(key)
+ pickle_length = lib.olm_pickle_outbound_group_session_length(self.ptr)
+ pickle_buffer = create_string_buffer(pickle_length)
+ lib.olm_pickle_outbound_group_session(
+ self.ptr, key_buffer, len(key), pickle_buffer, pickle_length
+ )
+ return pickle_buffer.raw
+
+ def unpickle(self, key, pickle):
+ key_buffer = create_string_buffer(key)
+ pickle_buffer = create_string_buffer(pickle)
+ lib.olm_unpickle_outbound_group_session(
+ self.ptr, key_buffer, len(key), pickle_buffer, len(pickle)
+ )
+
+ def encrypt(self, plaintext):
+ message_length = lib.olm_group_encrypt_message_length(
+ self.ptr, len(plaintext)
+ )
+ message_buffer = create_string_buffer(message_length)
+
+ plaintext_buffer = create_string_buffer(plaintext)
+
+ lib.olm_group_encrypt(
+ self.ptr,
+ plaintext_buffer, len(plaintext),
+ message_buffer, message_length,
+ )
+ return message_buffer.raw
+
+ def session_id(self):
+ id_length = lib.olm_outbound_group_session_id_length(self.ptr)
+ id_buffer = create_string_buffer(id_length)
+ lib.olm_outbound_group_session_id(self.ptr, id_buffer, id_length);
+ return id_buffer.raw
+
+ def message_index(self):
+ return lib.olm_outbound_group_session_message_index(self.ptr)
+
+ def session_key(self):
+ key_length = lib.olm_outbound_group_session_key_length(self.ptr)
+ key_buffer = create_string_buffer(key_length)
+ lib.olm_outbound_group_session_key(self.ptr, key_buffer, key_length);
+ return key_buffer.raw