END_TEST
START_TEST(test_serialize_pre_key_signal_message)
{
int result = 0;
static const char ciphertext[] = "WhisperCipherText";
ec_public_key *sender_ratchet_key = create_test_ec_public_key(global_context);
ec_public_key *sender_identity_key = create_test_ec_public_key(global_context);
ec_public_key *receiver_identity_key = create_test_ec_public_key(global_context);
ec_public_key *base_key = create_test_ec_public_key(global_context);
ec_public_key *identity_key = create_test_ec_public_key(global_context);
uint8_t mac_key[RATCHET_MAC_KEY_LENGTH];
memset(mac_key, 1, sizeof(mac_key));
signal_message *message = 0;
pre_key_signal_message *pre_key_message = 0;
pre_key_signal_message *result_pre_key_message = 0;
result = signal_message_create(&message, 3,
mac_key, sizeof(mac_key),
sender_ratchet_key,
2, /* counter */
1, /* previous counter */
(uint8_t *)ciphertext, sizeof(ciphertext) - 1,
sender_identity_key, receiver_identity_key,
global_context);
ck_assert_int_eq(result, 0);
uint32_t pre_key_id = 56;
result = pre_key_signal_message_create(&pre_key_message,
3, /* message version */
42, /* registration ID */
&pre_key_id, /* pre key ID */
72, /* signed pre key ID */
base_key, identity_key,
message,
global_context);
ck_assert_int_eq(result, 0);
signal_buffer *serialized = ciphertext_message_get_serialized((ciphertext_message *)pre_key_message);
ck_assert_ptr_ne(serialized, 0);
result = pre_key_signal_message_deserialize(&result_pre_key_message,
signal_buffer_data(serialized),
signal_buffer_len(serialized),
global_context);
ck_assert_int_eq(result, 0);
int version1 = pre_key_signal_message_get_message_version(pre_key_message);
int version2 = pre_key_signal_message_get_message_version(result_pre_key_message);
ck_assert_int_eq(version1, version2);
ec_public_key *identity_key1 = pre_key_signal_message_get_identity_key(pre_key_message);
ec_public_key *identity_key2 = pre_key_signal_message_get_identity_key(result_pre_key_message);
ck_assert_int_eq(ec_public_key_compare(identity_key1, identity_key2), 0);
int registration_id1 = pre_key_signal_message_get_registration_id(pre_key_message);
int registration_id2 = pre_key_signal_message_get_registration_id(result_pre_key_message);
ck_assert_int_eq(registration_id1, registration_id2);
int has_pre_key_id1 = pre_key_signal_message_has_pre_key_id(pre_key_message);
int has_pre_key_id2 = pre_key_signal_message_has_pre_key_id(result_pre_key_message);
ck_assert_int_eq(has_pre_key_id1, has_pre_key_id2);
if(has_pre_key_id1) {
int pre_key_id1 = pre_key_signal_message_get_pre_key_id(pre_key_message);
int pre_key_id2 = pre_key_signal_message_get_pre_key_id(result_pre_key_message);
ck_assert_int_eq(pre_key_id1, pre_key_id2);
}
int signed_pre_key_id1 = pre_key_signal_message_get_signed_pre_key_id(pre_key_message);
int signed_pre_key_id2 = pre_key_signal_message_get_signed_pre_key_id(result_pre_key_message);
ck_assert_int_eq(signed_pre_key_id1, signed_pre_key_id2);
ec_public_key *base_key1 = pre_key_signal_message_get_base_key(pre_key_message);
ec_public_key *base_key2 = pre_key_signal_message_get_base_key(result_pre_key_message);
ck_assert_int_eq(ec_public_key_compare(base_key1, base_key2), 0);
signal_message *message1 = pre_key_signal_message_get_signal_message(pre_key_message);
signal_message *message2 = pre_key_signal_message_get_signal_message(result_pre_key_message);
compare_signal_messages(message1, message2);
/* Cleanup */
SIGNAL_UNREF(message);
SIGNAL_UNREF(result_pre_key_message);
SIGNAL_UNREF(pre_key_message);
SIGNAL_UNREF(sender_ratchet_key);
SIGNAL_UNREF(sender_identity_key);
SIGNAL_UNREF(receiver_identity_key);
SIGNAL_UNREF(base_key);
SIGNAL_UNREF(identity_key);
}
int session_cipher_decrypt_pre_key_signal_message(session_cipher *cipher,
pre_key_signal_message *ciphertext, void *decrypt_context,
signal_buffer **plaintext)
{
int result = 0;
signal_buffer *result_buf = 0;
session_record *record = 0;
int has_unsigned_pre_key_id = 0;
uint32_t unsigned_pre_key_id = 0;
assert(cipher);
signal_lock(cipher->global_context);
if(cipher->inside_callback == 1) {
result = SG_ERR_INVAL;
goto complete;
}
result = signal_protocol_session_load_session(cipher->store, &record, cipher->remote_address);
if(result < 0) {
goto complete;
}
result = session_builder_process_pre_key_signal_message(cipher->builder, record, ciphertext, &unsigned_pre_key_id);
if(result < 0) {
goto complete;
}
has_unsigned_pre_key_id = result;
result = session_cipher_decrypt_from_record_and_signal_message(cipher, record,
pre_key_signal_message_get_signal_message(ciphertext),
&result_buf);
if(result < 0) {
goto complete;
}
result = session_cipher_decrypt_callback(cipher, result_buf, decrypt_context);
if(result < 0) {
goto complete;
}
result = signal_protocol_session_store_session(cipher->store, cipher->remote_address, record);
if(result < 0) {
goto complete;
}
if(has_unsigned_pre_key_id) {
result = signal_protocol_pre_key_remove_key(cipher->store, unsigned_pre_key_id);
if(result < 0) {
goto complete;
}
}
complete:
SIGNAL_UNREF(record);
if(result >= 0) {
*plaintext = result_buf;
}
else {
signal_buffer_free(result_buf);
}
signal_unlock(cipher->global_context);
return result;
}
