1 files changed, 145 insertions, 0 deletions
diff --git a/third_party/libwebrtc/p2p/base/stun_server_unittest.cc b/third_party/libwebrtc/p2p/base/stun_server_unittest.cc
new file mode 100644
index 0000000000..5d3f31fb98
--- /dev/null
+++ b/third_party/libwebrtc/p2p/base/stun_server_unittest.cc
@@ -0,0 +1,145 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "p2p/base/stun_server.h"
+
+#include <string.h>
+
+#include <memory>
+#include <string>
+
+#include "absl/memory/memory.h"
+#include "rtc_base/byte_buffer.h"
+#include "rtc_base/ip_address.h"
+#include "rtc_base/logging.h"
+#include "rtc_base/test_client.h"
+#include "rtc_base/thread.h"
+#include "rtc_base/virtual_socket_server.h"
+#include "test/gtest.h"
+
+namespace cricket {
+
+namespace {
+const rtc::SocketAddress server_addr("99.99.99.1", 3478);
+const rtc::SocketAddress client_addr("1.2.3.4", 1234);
+}  // namespace
+
+class StunServerTest : public ::testing::Test {
+ public:
+  StunServerTest() : ss_(new rtc::VirtualSocketServer()), network_(ss_.get()) {
+    server_.reset(
+        new StunServer(rtc::AsyncUDPSocket::Create(ss_.get(), server_addr)));
+    client_.reset(new rtc::TestClient(
+        absl::WrapUnique(rtc::AsyncUDPSocket::Create(ss_.get(), client_addr))));
+
+    network_.Start();
+  }
+  ~StunServerTest() override { network_.Stop(); }
+
+  void Send(const StunMessage& msg) {
+    rtc::ByteBufferWriter buf;
+    msg.Write(&buf);
+    Send(buf.Data(), static_cast<int>(buf.Length()));
+  }
+  void Send(const char* buf, int len) {
+    client_->SendTo(buf, len, server_addr);
+  }
+  bool ReceiveFails() { return (client_->CheckNoPacket()); }
+  StunMessage* Receive() {
+    StunMessage* msg = NULL;
+    std::unique_ptr<rtc::TestClient::Packet> packet =
+        client_->NextPacket(rtc::TestClient::kTimeoutMs);
+    if (packet) {
+      rtc::ByteBufferReader buf(packet->buf, packet->size);
+      msg = new StunMessage();
+      msg->Read(&buf);
+    }
+    return msg;
+  }
+
+ private:
+  rtc::AutoThread main_thread;
+  std::unique_ptr<rtc::VirtualSocketServer> ss_;
+  rtc::Thread network_;
+  std::unique_ptr<StunServer> server_;
+  std::unique_ptr<rtc::TestClient> client_;
+};
+
+TEST_F(StunServerTest, TestGood) {
+  // kStunLegacyTransactionIdLength = 16 for legacy RFC 3489 request
+  std::string transaction_id = "0123456789abcdef";
+  StunMessage req(STUN_BINDING_REQUEST, transaction_id);
+  Send(req);
+
+  StunMessage* msg = Receive();
+  ASSERT_TRUE(msg != NULL);
+  EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type());
+  EXPECT_EQ(req.transaction_id(), msg->transaction_id());
+
+  const StunAddressAttribute* mapped_addr =
+      msg->GetAddress(STUN_ATTR_MAPPED_ADDRESS);
+  EXPECT_TRUE(mapped_addr != NULL);
+  EXPECT_EQ(1, mapped_addr->family());
+  EXPECT_EQ(client_addr.port(), mapped_addr->port());
+
+  delete msg;
+}
+
+TEST_F(StunServerTest, TestGoodXorMappedAddr) {
+  // kStunTransactionIdLength = 12 for RFC 5389 request
+  // StunMessage::Write will automatically insert magic cookie (0x2112A442)
+  std::string transaction_id = "0123456789ab";
+  StunMessage req(STUN_BINDING_REQUEST, transaction_id);
+  Send(req);
+
+  StunMessage* msg = Receive();
+  ASSERT_TRUE(msg != NULL);
+  EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type());
+  EXPECT_EQ(req.transaction_id(), msg->transaction_id());
+
+  const StunAddressAttribute* mapped_addr =
+      msg->GetAddress(STUN_ATTR_XOR_MAPPED_ADDRESS);
+  EXPECT_TRUE(mapped_addr != NULL);
+  EXPECT_EQ(1, mapped_addr->family());
+  EXPECT_EQ(client_addr.port(), mapped_addr->port());
+
+  delete msg;
+}
+
+// Send legacy RFC 3489 request, should not get xor mapped addr
+TEST_F(StunServerTest, TestNoXorMappedAddr) {
+  // kStunLegacyTransactionIdLength = 16 for legacy RFC 3489 request
+  std::string transaction_id = "0123456789abcdef";
+  StunMessage req(STUN_BINDING_REQUEST, transaction_id);
+  Send(req);
+
+  StunMessage* msg = Receive();
+  ASSERT_TRUE(msg != NULL);
+  EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type());
+  EXPECT_EQ(req.transaction_id(), msg->transaction_id());
+
+  const StunAddressAttribute* mapped_addr =
+      msg->GetAddress(STUN_ATTR_XOR_MAPPED_ADDRESS);
+  EXPECT_TRUE(mapped_addr == NULL);
+
+  delete msg;
+}
+
+TEST_F(StunServerTest, TestBad) {
+  const char* bad =
+      "this is a completely nonsensical message whose only "
+      "purpose is to make the parser go 'ack'.  it doesn't "
+      "look anything like a normal stun message";
+  Send(bad, static_cast<int>(strlen(bad)));
+
+  ASSERT_TRUE(ReceiveFails());
+}
+
+}  // namespace cricket