Implementation of an outbound group session

2 files changed, 92 insertions, 1 deletions

diff --git a/tests/test_group_session.cpp b/tests/test_group_session.cpp
new file mode 100644
index 0000000..9081293
--- /dev/null
+++ b/tests/test_group_session.cpp
@@ -0,0 +1,56 @@
+/* Copyright 2016 OpenMarket Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "olm/outbound_group_session.h"
+#include "unittest.hh"
+
+
+int main() {
+
+uint8_t random_bytes[] =
+    "0123456789ABDEF0123456789ABCDEF"
+    "0123456789ABDEF0123456789ABCDEF"
+    "0123456789ABDEF0123456789ABCDEF"
+    "0123456789ABDEF0123456789ABCDEF"
+    "0123456789ABDEF0123456789ABCDEF";
+
+{
+    TestCase test_case("Group message send/receive");
+
+    size_t size = olm_outbound_group_session_size();
+    void *memory = alloca(size);
+    OlmOutboundGroupSession *session = olm_outbound_group_session(memory);
+
+    assert_equals((size_t)132,
+                  olm_init_outbound_group_session_random_length(session));
+
+    size_t res = olm_init_outbound_group_session(
+        session, random_bytes, sizeof(random_bytes));
+    assert_equals((size_t)0, res);
+
+    uint8_t plaintext[] = "Message";
+    size_t plaintext_length = sizeof(plaintext) - 1;
+
+    size_t msglen = olm_group_encrypt_message_length(
+        session, plaintext_length);
+
+    uint8_t *msg = (uint8_t *)alloca(msglen);
+    res = olm_group_encrypt(session, plaintext, plaintext_length,
+                            msg, msglen);
+    assert_equals(msglen, res);
+
+    // TODO: decode the message
+}
+
+}
diff --git a/tests/test_message.cpp b/tests/test_message.cpp
index ff14649..e2385ea 100644
--- a/tests/test_message.cpp
+++ b/tests/test_message.cpp
@@ -1,4 +1,4 @@
-/* Copyright 2015 OpenMarket Ltd
+/* Copyright 2015-2016 OpenMarket Ltd
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -62,4 +62,39 @@ assert_equals(message2, output, 35);
 
 } /* Message encode test */
 
+
+{ /* group message encode test */
+
+    TestCase test_case("Group message encode test");
+
+    const uint8_t session_id[] = "sessionid";
+    size_t session_id_len = 9;
+
+    size_t length = _olm_encode_group_message_length(
+        session_id_len, 200, 10, 8);
+    size_t expected_length = 1 + (2+session_id_len) + (1+2) + (2+10) + 8;
+    assert_equals(expected_length, length);
+
+    uint8_t output[50];
+    uint8_t *ciphertext_ptr;
+
+    _olm_encode_group_message(
+        3,
+        session_id, session_id_len,
+        200, // counter
+        10,  // ciphertext length
+        output,
+        &ciphertext_ptr
+    );
+
+    uint8_t expected[] =
+        "\x03"
+        "\x2A\x09sessionid"
+        "\x10\xc8\x01"
+        "\x22\x0a";
+
+    assert_equals(expected, output, sizeof(expected)-1);
+    assert_equals(output+sizeof(expected)-1, ciphertext_ptr);
+} /* group message encode test */
+
 }