mozilla-central/third_party/libwebrtc/media/base/rtp_utils_unittest.cc

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/*
* Copyright (c) 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 "media/base/rtp_utils.h"
#include <string.h>
#include <cstdint>
#include <vector>
#include "media/base/fake_rtp.h"
#include "rtc_base/async_packet_socket.h"
#include "test/gtest.h"
namespace cricket {
static const uint8_t kInvalidPacket[] = {0x80, 0x00};
// PT = 206, FMT = 1, Sender SSRC = 0x1111, Media SSRC = 0x1111
// No FCI information is needed for PLI.
static const uint8_t kNonCompoundRtcpPliFeedbackPacket[] = {
0x81, 0xCE, 0x00, 0x0C, 0x00, 0x00, 0x11, 0x11, 0x00, 0x00, 0x11, 0x11};
// Packet has only mandatory fixed RTCP header
// PT = 204, SSRC = 0x1111
static const uint8_t kNonCompoundRtcpAppPacket[] = {0x81, 0xCC, 0x00, 0x0C,
0x00, 0x00, 0x11, 0x11};
// PT = 202, Source count = 0
static const uint8_t kNonCompoundRtcpSDESPacket[] = {0x80, 0xCA, 0x00, 0x00};
static uint8_t kFakeTag[4] = {0xba, 0xdd, 0xba, 0xdd};
static uint8_t kTestKey[] = "12345678901234567890";
static uint8_t kTestAstValue[3] = {0xaa, 0xbb, 0xcc};
// Valid rtp Message with 2 byte header extension.
static uint8_t kRtpMsgWith2ByteExtnHeader[] = {
// clang-format off
// clang formatting doesn't respect inline comments.
0x90, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0xAA, 0xBB, 0xCC, 0XDD, // SSRC
0x10, 0x00, 0x00, 0x01, // 2 Byte header extension
0x01, 0x00, 0x00, 0x00
// clang-format on
};
// RTP packet with two one-byte header extensions. The last 4 bytes consist of
// abs-send-time with extension id = 3 and length = 3.
static uint8_t kRtpMsgWithOneByteAbsSendTimeExtension[] = {
0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xBE, 0xDE, 0x00, 0x02, 0x22, 0x00, 0x02, 0x1c, 0x32, 0xaa, 0xbb, 0xcc,
};
// RTP packet with two two-byte header extensions. The last 5 bytes consist of
// abs-send-time with extension id = 3 and length = 3.
static uint8_t kRtpMsgWithTwoByteAbsSendTimeExtension[] = {
0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x10, 0x00, 0x00, 0x02, 0x02, 0x01, 0x02, 0x03, 0x03, 0xaa, 0xbb, 0xcc,
};
// Index of AbsSendTimeExtn data in message
// `kRtpMsgWithOneByteAbsSendTimeExtension`.
static const int kAstIndexInOneByteRtpMsg = 21;
// and in message `kRtpMsgWithTwoByteAbsSendTimeExtension`.
static const int kAstIndexInTwoByteRtpMsg = 21;
static const rtc::ArrayView<const uint8_t> kPcmuFrameArrayView =
rtc::MakeArrayView(kPcmuFrame, sizeof(kPcmuFrame));
static const rtc::ArrayView<const uint8_t> kRtcpReportArrayView =
rtc::MakeArrayView(kRtcpReport, sizeof(kRtcpReport));
static const rtc::ArrayView<const uint8_t> kInvalidPacketArrayView =
rtc::MakeArrayView(kInvalidPacket, sizeof(kInvalidPacket));
TEST(RtpUtilsTest, GetRtcp) {
int pt;
EXPECT_TRUE(GetRtcpType(kRtcpReport, sizeof(kRtcpReport), &pt));
EXPECT_EQ(0xc9, pt);
EXPECT_FALSE(GetRtcpType(kInvalidPacket, sizeof(kInvalidPacket), &pt));
uint32_t ssrc;
EXPECT_TRUE(GetRtcpSsrc(kNonCompoundRtcpPliFeedbackPacket,
sizeof(kNonCompoundRtcpPliFeedbackPacket), &ssrc));
EXPECT_TRUE(GetRtcpSsrc(kNonCompoundRtcpAppPacket,
sizeof(kNonCompoundRtcpAppPacket), &ssrc));
EXPECT_FALSE(GetRtcpSsrc(kNonCompoundRtcpSDESPacket,
sizeof(kNonCompoundRtcpSDESPacket), &ssrc));
}
// Invalid RTP packets.
TEST(RtpUtilsTest, InvalidRtpHeader) {
// Rtp message with invalid length.
const uint8_t kRtpMsgWithInvalidLength[] = {
// clang-format off
// clang formatting doesn't respect inline comments.
0x94, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xAA, 0xBB, 0xCC, 0XDD, // SSRC
0xDD, 0xCC, 0xBB, 0xAA, // Only 1 CSRC, but CC count is 4.
// clang-format on
};
EXPECT_FALSE(ValidateRtpHeader(kRtpMsgWithInvalidLength,
sizeof(kRtpMsgWithInvalidLength), nullptr));
// Rtp message with single byte header extension, invalid extension length.
const uint8_t kRtpMsgWithInvalidExtnLength[] = {
0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0xBE, 0xDE, 0x0A, 0x00, // Extn length - 0x0A00
};
EXPECT_FALSE(ValidateRtpHeader(kRtpMsgWithInvalidExtnLength,
sizeof(kRtpMsgWithInvalidExtnLength),
nullptr));
}
// Valid RTP packet with a 2byte header extension.
TEST(RtpUtilsTest, Valid2ByteExtnHdrRtpMessage) {
EXPECT_TRUE(ValidateRtpHeader(kRtpMsgWith2ByteExtnHeader,
sizeof(kRtpMsgWith2ByteExtnHeader), nullptr));
}
// Valid RTP packet which has 1 byte header AbsSendTime extension in it.
TEST(RtpUtilsTest, ValidRtpPacketWithOneByteAbsSendTimeExtension) {
EXPECT_TRUE(ValidateRtpHeader(kRtpMsgWithOneByteAbsSendTimeExtension,
sizeof(kRtpMsgWithOneByteAbsSendTimeExtension),
nullptr));
}
// Valid RTP packet which has 2 byte header AbsSendTime extension in it.
TEST(RtpUtilsTest, ValidRtpPacketWithTwoByteAbsSendTimeExtension) {
EXPECT_TRUE(ValidateRtpHeader(kRtpMsgWithTwoByteAbsSendTimeExtension,
sizeof(kRtpMsgWithTwoByteAbsSendTimeExtension),
nullptr));
}
// Verify finding an extension ID in the TURN send indication message.
TEST(RtpUtilsTest, UpdateAbsSendTimeExtensionInTurnSendIndication) {
// A valid STUN indication message with a valid RTP header in data attribute
// payload field and no extension bit set.
uint8_t message_without_extension[] = {
// clang-format off
// clang formatting doesn't respect inline comments.
0x00, 0x16, 0x00, 0x18, // length of
0x21, 0x12, 0xA4, 0x42, // magic cookie
'0', '1', '2', '3', // transaction id
'4', '5', '6', '7',
'8', '9', 'a', 'b',
0x00, 0x20, 0x00, 0x04, // Mapped address.
0x00, 0x00, 0x00, 0x00,
0x00, 0x13, 0x00, 0x0C, // Data attribute.
0x80, 0x00, 0x00, 0x00, // RTP packet.
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
// clang-format on
};
EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(
message_without_extension, sizeof(message_without_extension), 3, 0));
// A valid STUN indication message with a valid RTP header and a extension
// header.
uint8_t message[] = {
// clang-format off
// clang formatting doesn't respect inline comments.
0x00, 0x16, 0x00, 0x24, // length of
0x21, 0x12, 0xA4, 0x42, // magic cookie
'0', '1', '2', '3', // transaction id
'4', '5', '6', '7',
'8', '9', 'a', 'b',
0x00, 0x20, 0x00, 0x04, // Mapped address.
0x00, 0x00, 0x00, 0x00,
0x00, 0x13, 0x00, 0x18, // Data attribute.
0x90, 0x00, 0x00, 0x00, // RTP packet.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xBE, 0xDE,
0x00, 0x02, 0x22, 0xaa, 0xbb, 0xcc, 0x32, 0xaa, 0xbb, 0xcc,
// clang-format on
};
EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(message, sizeof(message), 3, 0));
}
// Test without any packet options variables set. This method should return
// without HMAC value in the packet.
TEST(RtpUtilsTest, ApplyPacketOptionsWithDefaultValues) {
rtc::PacketTimeUpdateParams packet_time_params;
std::vector<uint8_t> rtp_packet(
kRtpMsgWithOneByteAbsSendTimeExtension,
kRtpMsgWithOneByteAbsSendTimeExtension +
sizeof(kRtpMsgWithOneByteAbsSendTimeExtension));
rtp_packet.insert(rtp_packet.end(), kFakeTag, kFakeTag + sizeof(kFakeTag));
EXPECT_TRUE(ApplyPacketOptions(&rtp_packet[0], rtp_packet.size(),
packet_time_params, 0));
// Making sure HMAC wasn't updated..
EXPECT_EQ(0,
memcmp(&rtp_packet[sizeof(kRtpMsgWithOneByteAbsSendTimeExtension)],
kFakeTag, 4));
// Verify AbsouluteSendTime extension field wasn't modified.
EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInOneByteRtpMsg], kTestAstValue,
sizeof(kTestAstValue)));
}
// Veirfy HMAC is updated when packet option parameters are set.
TEST(RtpUtilsTest, ApplyPacketOptionsWithAuthParams) {
rtc::PacketTimeUpdateParams packet_time_params;
packet_time_params.srtp_auth_key.assign(kTestKey,
kTestKey + sizeof(kTestKey));
packet_time_params.srtp_auth_tag_len = 4;
std::vector<uint8_t> rtp_packet(
kRtpMsgWithOneByteAbsSendTimeExtension,
kRtpMsgWithOneByteAbsSendTimeExtension +
sizeof(kRtpMsgWithOneByteAbsSendTimeExtension));
rtp_packet.insert(rtp_packet.end(), kFakeTag, kFakeTag + sizeof(kFakeTag));
EXPECT_TRUE(ApplyPacketOptions(&rtp_packet[0], rtp_packet.size(),
packet_time_params, 0));
uint8_t kExpectedTag[] = {0xc1, 0x7a, 0x8c, 0xa0};
EXPECT_EQ(0,
memcmp(&rtp_packet[sizeof(kRtpMsgWithOneByteAbsSendTimeExtension)],
kExpectedTag, sizeof(kExpectedTag)));
// Verify AbsouluteSendTime extension field is not modified.
EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInOneByteRtpMsg], kTestAstValue,
sizeof(kTestAstValue)));
}
// Verify finding an extension ID in a raw rtp message.
TEST(RtpUtilsTest, UpdateOneByteAbsSendTimeExtensionInRtpPacket) {
std::vector<uint8_t> rtp_packet(
kRtpMsgWithOneByteAbsSendTimeExtension,
kRtpMsgWithOneByteAbsSendTimeExtension +
sizeof(kRtpMsgWithOneByteAbsSendTimeExtension));
EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(&rtp_packet[0], rtp_packet.size(),
3, 51183266));
// Verify that the timestamp was updated.
const uint8_t kExpectedTimestamp[3] = {0xcc, 0xbb, 0xaa};
EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInOneByteRtpMsg], kExpectedTimestamp,
sizeof(kExpectedTimestamp)));
}
// Verify finding an extension ID in a raw rtp message.
TEST(RtpUtilsTest, UpdateTwoByteAbsSendTimeExtensionInRtpPacket) {
std::vector<uint8_t> rtp_packet(
kRtpMsgWithTwoByteAbsSendTimeExtension,
kRtpMsgWithTwoByteAbsSendTimeExtension +
sizeof(kRtpMsgWithTwoByteAbsSendTimeExtension));
EXPECT_TRUE(UpdateRtpAbsSendTimeExtension(&rtp_packet[0], rtp_packet.size(),
3, 51183266));
// Verify that the timestamp was updated.
const uint8_t kExpectedTimestamp[3] = {0xcc, 0xbb, 0xaa};
EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInTwoByteRtpMsg], kExpectedTimestamp,
sizeof(kExpectedTimestamp)));
}
// Verify we update both AbsSendTime extension header and HMAC.
TEST(RtpUtilsTest, ApplyPacketOptionsWithAuthParamsAndAbsSendTime) {
rtc::PacketTimeUpdateParams packet_time_params;
packet_time_params.srtp_auth_key.assign(kTestKey,
kTestKey + sizeof(kTestKey));
packet_time_params.srtp_auth_tag_len = 4;
packet_time_params.rtp_sendtime_extension_id = 3;
// 3 is also present in the test message.
std::vector<uint8_t> rtp_packet(
kRtpMsgWithOneByteAbsSendTimeExtension,
kRtpMsgWithOneByteAbsSendTimeExtension +
sizeof(kRtpMsgWithOneByteAbsSendTimeExtension));
rtp_packet.insert(rtp_packet.end(), kFakeTag, kFakeTag + sizeof(kFakeTag));
EXPECT_TRUE(ApplyPacketOptions(&rtp_packet[0], rtp_packet.size(),
packet_time_params, 51183266));
const uint8_t kExpectedTag[] = {0x81, 0xd1, 0x2c, 0x0e};
EXPECT_EQ(0,
memcmp(&rtp_packet[sizeof(kRtpMsgWithOneByteAbsSendTimeExtension)],
kExpectedTag, sizeof(kExpectedTag)));
// Verify that the timestamp was updated.
const uint8_t kExpectedTimestamp[3] = {0xcc, 0xbb, 0xaa};
EXPECT_EQ(0, memcmp(&rtp_packet[kAstIndexInOneByteRtpMsg], kExpectedTimestamp,
sizeof(kExpectedTimestamp)));
}
TEST(RtpUtilsTest, InferRtpPacketType) {
EXPECT_EQ(RtpPacketType::kRtp, InferRtpPacketType(kPcmuFrameArrayView));
EXPECT_EQ(RtpPacketType::kRtcp, InferRtpPacketType(kRtcpReportArrayView));
EXPECT_EQ(RtpPacketType::kUnknown,
InferRtpPacketType(kInvalidPacketArrayView));
}
} // namespace cricket