solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 1 | /* |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 2 | * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 11 | #include "test/rtp_file_reader.h" |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 12 | |
pbos@webrtc.org | 12dc1a3 | 2013-08-05 16:22:53 +0000 | [diff] [blame] | 13 | #include <stdio.h> |
| 14 | |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 15 | #include <map> |
| 16 | #include <string> |
| 17 | #include <vector> |
| 18 | |
Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 19 | #include "modules/rtp_rtcp/source/rtp_utility.h" |
| 20 | #include "rtc_base/checks.h" |
| 21 | #include "rtc_base/constructormagic.h" |
| 22 | #include "rtc_base/format_macros.h" |
| 23 | #include "rtc_base/logging.h" |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 24 | |
| 25 | namespace webrtc { |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 26 | namespace test { |
| 27 | |
| 28 | static const size_t kFirstLineLength = 40; |
| 29 | static uint16_t kPacketHeaderSize = 8; |
| 30 | |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 31 | #define TRY(expr) \ |
| 32 | do { \ |
| 33 | if (!(expr)) { \ |
| 34 | RTC_LOG(LS_INFO) << "Failed to read"; \ |
| 35 | return false; \ |
| 36 | } \ |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 37 | } while (0) |
| 38 | |
stefan@webrtc.org | 48ac226 | 2015-03-02 16:18:56 +0000 | [diff] [blame] | 39 | bool ReadUint32(uint32_t* out, FILE* file) { |
| 40 | *out = 0; |
| 41 | for (size_t i = 0; i < 4; ++i) { |
| 42 | *out <<= 8; |
| 43 | uint8_t tmp; |
| 44 | if (fread(&tmp, 1, sizeof(uint8_t), file) != sizeof(uint8_t)) |
| 45 | return false; |
| 46 | *out |= tmp; |
| 47 | } |
| 48 | return true; |
| 49 | } |
| 50 | |
| 51 | bool ReadUint16(uint16_t* out, FILE* file) { |
| 52 | *out = 0; |
| 53 | for (size_t i = 0; i < 2; ++i) { |
| 54 | *out <<= 8; |
| 55 | uint8_t tmp; |
| 56 | if (fread(&tmp, 1, sizeof(uint8_t), file) != sizeof(uint8_t)) |
| 57 | return false; |
| 58 | *out |= tmp; |
| 59 | } |
| 60 | return true; |
| 61 | } |
| 62 | |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 63 | class RtpFileReaderImpl : public RtpFileReader { |
| 64 | public: |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 65 | virtual bool Init(const std::string& filename, |
| 66 | const std::set<uint32_t>& ssrc_filter) = 0; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 67 | }; |
| 68 | |
stefan@webrtc.org | 48ac226 | 2015-03-02 16:18:56 +0000 | [diff] [blame] | 69 | class InterleavedRtpFileReader : public RtpFileReaderImpl { |
| 70 | public: |
| 71 | virtual ~InterleavedRtpFileReader() { |
| 72 | if (file_ != NULL) { |
| 73 | fclose(file_); |
| 74 | file_ = NULL; |
| 75 | } |
| 76 | } |
| 77 | |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 78 | virtual bool Init(const std::string& filename, |
| 79 | const std::set<uint32_t>& ssrc_filter) { |
stefan@webrtc.org | 48ac226 | 2015-03-02 16:18:56 +0000 | [diff] [blame] | 80 | file_ = fopen(filename.c_str(), "rb"); |
| 81 | if (file_ == NULL) { |
| 82 | printf("ERROR: Can't open file: %s\n", filename.c_str()); |
| 83 | return false; |
| 84 | } |
| 85 | return true; |
| 86 | } |
| 87 | virtual bool NextPacket(RtpPacket* packet) { |
| 88 | assert(file_ != NULL); |
| 89 | packet->length = RtpPacket::kMaxPacketBufferSize; |
| 90 | uint32_t len = 0; |
| 91 | TRY(ReadUint32(&len, file_)); |
| 92 | if (packet->length < len) { |
| 93 | FATAL() << "Packet is too large to fit: " << len << " bytes vs " |
| 94 | << packet->length |
| 95 | << " bytes allocated. Consider increasing the buffer " |
| 96 | "size"; |
| 97 | } |
| 98 | if (fread(packet->data, 1, len, file_) != len) |
| 99 | return false; |
| 100 | |
| 101 | packet->length = len; |
| 102 | packet->original_length = len; |
| 103 | packet->time_ms = time_ms_; |
| 104 | time_ms_ += 5; |
| 105 | return true; |
| 106 | } |
| 107 | |
| 108 | private: |
| 109 | FILE* file_ = NULL; |
| 110 | int64_t time_ms_ = 0; |
| 111 | }; |
| 112 | |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 113 | // Read RTP packets from file in rtpdump format, as documented at: |
| 114 | // http://www.cs.columbia.edu/irt/software/rtptools/ |
| 115 | class RtpDumpReader : public RtpFileReaderImpl { |
| 116 | public: |
| 117 | RtpDumpReader() : file_(NULL) {} |
| 118 | virtual ~RtpDumpReader() { |
| 119 | if (file_ != NULL) { |
| 120 | fclose(file_); |
| 121 | file_ = NULL; |
| 122 | } |
| 123 | } |
| 124 | |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 125 | bool Init(const std::string& filename, |
nisse | ef8b61e | 2016-04-29 06:09:15 -0700 | [diff] [blame] | 126 | const std::set<uint32_t>& ssrc_filter) override { |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 127 | file_ = fopen(filename.c_str(), "rb"); |
| 128 | if (file_ == NULL) { |
| 129 | printf("ERROR: Can't open file: %s\n", filename.c_str()); |
| 130 | return false; |
| 131 | } |
| 132 | |
| 133 | char firstline[kFirstLineLength + 1] = {0}; |
| 134 | if (fgets(firstline, kFirstLineLength, file_) == NULL) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 135 | RTC_LOG(LS_INFO) << "Can't read from file"; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 136 | return false; |
| 137 | } |
| 138 | if (strncmp(firstline, "#!rtpplay", 9) == 0) { |
| 139 | if (strncmp(firstline, "#!rtpplay1.0", 12) != 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 140 | RTC_LOG(LS_INFO) << "Wrong rtpplay version, must be 1.0"; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 141 | return false; |
| 142 | } |
| 143 | } else if (strncmp(firstline, "#!RTPencode", 11) == 0) { |
| 144 | if (strncmp(firstline, "#!RTPencode1.0", 14) != 0) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 145 | RTC_LOG(LS_INFO) << "Wrong RTPencode version, must be 1.0"; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 146 | return false; |
| 147 | } |
| 148 | } else { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 149 | RTC_LOG(LS_INFO) << "Wrong file format of input file"; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 150 | return false; |
| 151 | } |
| 152 | |
| 153 | uint32_t start_sec; |
| 154 | uint32_t start_usec; |
| 155 | uint32_t source; |
| 156 | uint16_t port; |
| 157 | uint16_t padding; |
stefan@webrtc.org | 48ac226 | 2015-03-02 16:18:56 +0000 | [diff] [blame] | 158 | TRY(ReadUint32(&start_sec, file_)); |
| 159 | TRY(ReadUint32(&start_usec, file_)); |
| 160 | TRY(ReadUint32(&source, file_)); |
| 161 | TRY(ReadUint16(&port, file_)); |
| 162 | TRY(ReadUint16(&padding, file_)); |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 163 | |
| 164 | return true; |
| 165 | } |
| 166 | |
kjellander@webrtc.org | 14665ff | 2015-03-04 12:58:35 +0000 | [diff] [blame] | 167 | bool NextPacket(RtpPacket* packet) override { |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 168 | uint8_t* rtp_data = packet->data; |
henrik.lundin@webrtc.org | 91d928e | 2014-11-26 15:50:30 +0000 | [diff] [blame] | 169 | packet->length = RtpPacket::kMaxPacketBufferSize; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 170 | |
| 171 | uint16_t len; |
| 172 | uint16_t plen; |
| 173 | uint32_t offset; |
stefan@webrtc.org | 48ac226 | 2015-03-02 16:18:56 +0000 | [diff] [blame] | 174 | TRY(ReadUint16(&len, file_)); |
| 175 | TRY(ReadUint16(&plen, file_)); |
| 176 | TRY(ReadUint32(&offset, file_)); |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 177 | |
| 178 | // Use 'len' here because a 'plen' of 0 specifies rtcp. |
| 179 | len -= kPacketHeaderSize; |
| 180 | if (packet->length < len) { |
henrik.lundin@webrtc.org | 38c121c | 2014-09-30 11:08:44 +0000 | [diff] [blame] | 181 | FATAL() << "Packet is too large to fit: " << len << " bytes vs " |
| 182 | << packet->length |
| 183 | << " bytes allocated. Consider increasing the buffer " |
| 184 | "size"; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 185 | } |
| 186 | if (fread(rtp_data, 1, len, file_) != len) { |
| 187 | return false; |
| 188 | } |
| 189 | |
| 190 | packet->length = len; |
henrik.lundin@webrtc.org | 38c121c | 2014-09-30 11:08:44 +0000 | [diff] [blame] | 191 | packet->original_length = plen; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 192 | packet->time_ms = offset; |
| 193 | return true; |
| 194 | } |
| 195 | |
| 196 | private: |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 197 | FILE* file_; |
| 198 | |
henrikg | 3c089d7 | 2015-09-16 05:37:44 -0700 | [diff] [blame] | 199 | RTC_DISALLOW_COPY_AND_ASSIGN(RtpDumpReader); |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 200 | }; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 201 | |
| 202 | enum { |
| 203 | kResultFail = -1, |
| 204 | kResultSuccess = 0, |
| 205 | kResultSkip = 1, |
| 206 | |
| 207 | kPcapVersionMajor = 2, |
| 208 | kPcapVersionMinor = 4, |
| 209 | kLinktypeNull = 0, |
| 210 | kLinktypeEthernet = 1, |
| 211 | kBsdNullLoopback1 = 0x00000002, |
| 212 | kBsdNullLoopback2 = 0x02000000, |
| 213 | kEthernetIIHeaderMacSkip = 12, |
| 214 | kEthertypeIp = 0x0800, |
| 215 | kIpVersion4 = 4, |
| 216 | kMinIpHeaderLength = 20, |
| 217 | kFragmentOffsetClear = 0x0000, |
| 218 | kFragmentOffsetDoNotFragment = 0x4000, |
| 219 | kProtocolTcp = 0x06, |
| 220 | kProtocolUdp = 0x11, |
| 221 | kUdpHeaderLength = 8, |
| 222 | kMaxReadBufferSize = 4096 |
| 223 | }; |
| 224 | |
| 225 | const uint32_t kPcapBOMSwapOrder = 0xd4c3b2a1UL; |
| 226 | const uint32_t kPcapBOMNoSwapOrder = 0xa1b2c3d4UL; |
| 227 | |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 228 | #define TRY_PCAP(expr) \ |
| 229 | do { \ |
| 230 | int r = (expr); \ |
| 231 | if (r == kResultFail) { \ |
| 232 | RTC_LOG(LS_INFO) << "FAIL at " << __FILE__ << ":" << __LINE__; \ |
| 233 | return kResultFail; \ |
| 234 | } else if (r == kResultSkip) { \ |
| 235 | return kResultSkip; \ |
| 236 | } \ |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 237 | } while (0) |
| 238 | |
| 239 | // Read RTP packets from file in tcpdump/libpcap format, as documented at: |
| 240 | // http://wiki.wireshark.org/Development/LibpcapFileFormat |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 241 | class PcapReader : public RtpFileReaderImpl { |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 242 | public: |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 243 | PcapReader() |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 244 | : file_(NULL), |
| 245 | swap_pcap_byte_order_(false), |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 246 | #ifdef WEBRTC_ARCH_BIG_ENDIAN |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 247 | swap_network_byte_order_(false), |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 248 | #else |
| 249 | swap_network_byte_order_(true), |
| 250 | #endif |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 251 | read_buffer_(), |
| 252 | packets_by_ssrc_(), |
| 253 | packets_(), |
| 254 | next_packet_it_() { |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 255 | } |
| 256 | |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 257 | virtual ~PcapReader() { |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 258 | if (file_ != NULL) { |
| 259 | fclose(file_); |
| 260 | file_ = NULL; |
| 261 | } |
| 262 | } |
| 263 | |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 264 | bool Init(const std::string& filename, |
| 265 | const std::set<uint32_t>& ssrc_filter) override { |
| 266 | return Initialize(filename, ssrc_filter) == kResultSuccess; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 267 | } |
| 268 | |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 269 | int Initialize(const std::string& filename, |
| 270 | const std::set<uint32_t>& ssrc_filter) { |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 271 | file_ = fopen(filename.c_str(), "rb"); |
| 272 | if (file_ == NULL) { |
| 273 | printf("ERROR: Can't open file: %s\n", filename.c_str()); |
| 274 | return kResultFail; |
| 275 | } |
| 276 | |
| 277 | if (ReadGlobalHeader() < 0) { |
| 278 | return kResultFail; |
| 279 | } |
| 280 | |
| 281 | int total_packet_count = 0; |
| 282 | uint32_t stream_start_ms = 0; |
| 283 | int32_t next_packet_pos = ftell(file_); |
| 284 | for (;;) { |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 285 | TRY_PCAP(fseek(file_, next_packet_pos, SEEK_SET)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 286 | int result = ReadPacket(&next_packet_pos, stream_start_ms, |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 287 | ++total_packet_count, ssrc_filter); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 288 | if (result == kResultFail) { |
| 289 | break; |
| 290 | } else if (result == kResultSuccess && packets_.size() == 1) { |
| 291 | assert(stream_start_ms == 0); |
| 292 | PacketIterator it = packets_.begin(); |
| 293 | stream_start_ms = it->time_offset_ms; |
| 294 | it->time_offset_ms = 0; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | if (feof(file_) == 0) { |
| 299 | printf("Failed reading file!\n"); |
| 300 | return kResultFail; |
| 301 | } |
| 302 | |
| 303 | printf("Total packets in file: %d\n", total_packet_count); |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 304 | printf("Total RTP/RTCP packets: %" PRIuS "\n", packets_.size()); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 305 | |
| 306 | for (SsrcMapIterator mit = packets_by_ssrc_.begin(); |
| 307 | mit != packets_by_ssrc_.end(); ++mit) { |
| 308 | uint32_t ssrc = mit->first; |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 309 | const std::vector<uint32_t>& packet_indices = mit->second; |
| 310 | uint8_t pt = packets_[packet_indices[0]].rtp_header.payloadType; |
pkasting@chromium.org | d324546 | 2015-02-23 21:28:22 +0000 | [diff] [blame] | 311 | printf("SSRC: %08x, %" PRIuS " packets, pt=%d\n", ssrc, |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 312 | packet_indices.size(), pt); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | // TODO(solenberg): Better validation of identified SSRC streams. |
| 316 | // |
| 317 | // Since we're dealing with raw network data here, we will wrongly identify |
| 318 | // some packets as RTP. When these packets are consumed by RtpPlayer, they |
| 319 | // are unlikely to cause issues as they will ultimately be filtered out by |
| 320 | // the RtpRtcp module. However, we should really do better filtering here, |
| 321 | // which we can accomplish in a number of ways, e.g.: |
| 322 | // |
| 323 | // - Verify that the time stamps and sequence numbers for RTP packets are |
| 324 | // both increasing/decreasing. If they move in different directions, the |
| 325 | // SSRC is likely bogus and can be dropped. (Normally they should be inc- |
| 326 | // reasing but we must allow packet reordering). |
| 327 | // - If RTP sequence number is not changing, drop the stream. |
| 328 | // - Can also use srcip:port->dstip:port pairs, assuming few SSRC collisions |
| 329 | // for up/down streams. |
| 330 | |
| 331 | next_packet_it_ = packets_.begin(); |
| 332 | return kResultSuccess; |
| 333 | } |
| 334 | |
kjellander@webrtc.org | 14665ff | 2015-03-04 12:58:35 +0000 | [diff] [blame] | 335 | bool NextPacket(RtpPacket* packet) override { |
henrik.lundin@webrtc.org | 91d928e | 2014-11-26 15:50:30 +0000 | [diff] [blame] | 336 | uint32_t length = RtpPacket::kMaxPacketBufferSize; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 337 | if (NextPcap(packet->data, &length, &packet->time_ms) != kResultSuccess) |
| 338 | return false; |
| 339 | packet->length = static_cast<size_t>(length); |
henrik.lundin@webrtc.org | 38c121c | 2014-09-30 11:08:44 +0000 | [diff] [blame] | 340 | packet->original_length = packet->length; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 341 | return true; |
| 342 | } |
| 343 | |
| 344 | virtual int NextPcap(uint8_t* data, uint32_t* length, uint32_t* time_ms) { |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 345 | assert(data); |
| 346 | assert(length); |
| 347 | assert(time_ms); |
| 348 | |
| 349 | if (next_packet_it_ == packets_.end()) { |
| 350 | return -1; |
| 351 | } |
| 352 | if (*length < next_packet_it_->payload_length) { |
| 353 | return -1; |
| 354 | } |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 355 | TRY_PCAP(fseek(file_, next_packet_it_->pos_in_file, SEEK_SET)); |
| 356 | TRY_PCAP(Read(data, next_packet_it_->payload_length)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 357 | *length = next_packet_it_->payload_length; |
| 358 | *time_ms = next_packet_it_->time_offset_ms; |
| 359 | next_packet_it_++; |
| 360 | |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | private: |
| 365 | // A marker of an RTP packet within the file. |
| 366 | struct RtpPacketMarker { |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 367 | uint32_t packet_number; // One-based index (like in WireShark) |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 368 | uint32_t time_offset_ms; |
| 369 | uint32_t source_ip; |
| 370 | uint32_t dest_ip; |
| 371 | uint16_t source_port; |
| 372 | uint16_t dest_port; |
stefan@webrtc.org | a5cb98c | 2013-05-29 12:12:51 +0000 | [diff] [blame] | 373 | RTPHeader rtp_header; |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 374 | int32_t pos_in_file; // Byte offset of payload from start of file. |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 375 | uint32_t payload_length; |
| 376 | }; |
| 377 | |
| 378 | typedef std::vector<RtpPacketMarker>::iterator PacketIterator; |
| 379 | typedef std::map<uint32_t, std::vector<uint32_t> > SsrcMap; |
| 380 | typedef std::map<uint32_t, std::vector<uint32_t> >::iterator SsrcMapIterator; |
| 381 | |
| 382 | int ReadGlobalHeader() { |
| 383 | uint32_t magic; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 384 | TRY_PCAP(Read(&magic, false)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 385 | if (magic == kPcapBOMSwapOrder) { |
| 386 | swap_pcap_byte_order_ = true; |
| 387 | } else if (magic == kPcapBOMNoSwapOrder) { |
| 388 | swap_pcap_byte_order_ = false; |
| 389 | } else { |
| 390 | return kResultFail; |
| 391 | } |
| 392 | |
| 393 | uint16_t version_major; |
| 394 | uint16_t version_minor; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 395 | TRY_PCAP(Read(&version_major, false)); |
| 396 | TRY_PCAP(Read(&version_minor, false)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 397 | if (version_major != kPcapVersionMajor || |
| 398 | version_minor != kPcapVersionMinor) { |
| 399 | return kResultFail; |
| 400 | } |
| 401 | |
| 402 | int32_t this_zone; // GMT to local correction. |
| 403 | uint32_t sigfigs; // Accuracy of timestamps. |
| 404 | uint32_t snaplen; // Max length of captured packets, in octets. |
| 405 | uint32_t network; // Data link type. |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 406 | TRY_PCAP(Read(&this_zone, false)); |
| 407 | TRY_PCAP(Read(&sigfigs, false)); |
| 408 | TRY_PCAP(Read(&snaplen, false)); |
| 409 | TRY_PCAP(Read(&network, false)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 410 | |
| 411 | // Accept only LINKTYPE_NULL and LINKTYPE_ETHERNET. |
| 412 | // See: http://www.tcpdump.org/linktypes.html |
| 413 | if (network != kLinktypeNull && network != kLinktypeEthernet) { |
| 414 | return kResultFail; |
| 415 | } |
| 416 | |
| 417 | return kResultSuccess; |
| 418 | } |
| 419 | |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 420 | int ReadPacket(int32_t* next_packet_pos, |
| 421 | uint32_t stream_start_ms, |
| 422 | uint32_t number, |
| 423 | const std::set<uint32_t>& ssrc_filter) { |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 424 | assert(next_packet_pos); |
| 425 | |
| 426 | uint32_t ts_sec; // Timestamp seconds. |
| 427 | uint32_t ts_usec; // Timestamp microseconds. |
| 428 | uint32_t incl_len; // Number of octets of packet saved in file. |
| 429 | uint32_t orig_len; // Actual length of packet. |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 430 | TRY_PCAP(Read(&ts_sec, false)); |
| 431 | TRY_PCAP(Read(&ts_usec, false)); |
| 432 | TRY_PCAP(Read(&incl_len, false)); |
| 433 | TRY_PCAP(Read(&orig_len, false)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 434 | |
| 435 | *next_packet_pos = ftell(file_) + incl_len; |
| 436 | |
| 437 | RtpPacketMarker marker = {0}; |
| 438 | marker.packet_number = number; |
| 439 | marker.time_offset_ms = CalcTimeDelta(ts_sec, ts_usec, stream_start_ms); |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 440 | TRY_PCAP(ReadPacketHeader(&marker)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 441 | marker.pos_in_file = ftell(file_); |
| 442 | |
| 443 | if (marker.payload_length > sizeof(read_buffer_)) { |
| 444 | printf("Packet too large!\n"); |
| 445 | return kResultFail; |
| 446 | } |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 447 | TRY_PCAP(Read(read_buffer_, marker.payload_length)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 448 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 449 | RtpUtility::RtpHeaderParser rtp_parser(read_buffer_, marker.payload_length); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 450 | if (rtp_parser.RTCP()) { |
solenberg@webrtc.org | a5fd2f1 | 2013-06-26 08:36:07 +0000 | [diff] [blame] | 451 | rtp_parser.ParseRtcp(&marker.rtp_header); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 452 | packets_.push_back(marker); |
| 453 | } else { |
danilchap | f6975f4 | 2015-12-28 10:18:46 -0800 | [diff] [blame] | 454 | if (!rtp_parser.Parse(&marker.rtp_header, nullptr)) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 455 | RTC_LOG(LS_INFO) << "Not recognized as RTP/RTCP"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 456 | return kResultSkip; |
| 457 | } |
| 458 | |
stefan@webrtc.org | a5cb98c | 2013-05-29 12:12:51 +0000 | [diff] [blame] | 459 | uint32_t ssrc = marker.rtp_header.ssrc; |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 460 | if (ssrc_filter.empty() || ssrc_filter.find(ssrc) != ssrc_filter.end()) { |
| 461 | packets_by_ssrc_[ssrc].push_back( |
| 462 | static_cast<uint32_t>(packets_.size())); |
| 463 | packets_.push_back(marker); |
| 464 | } else { |
| 465 | return kResultSkip; |
| 466 | } |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 467 | } |
| 468 | |
| 469 | return kResultSuccess; |
| 470 | } |
| 471 | |
| 472 | int ReadPacketHeader(RtpPacketMarker* marker) { |
| 473 | int32_t file_pos = ftell(file_); |
| 474 | |
| 475 | // Check for BSD null/loopback frame header. The header is just 4 bytes in |
| 476 | // native byte order, so we check for both versions as we don't care about |
| 477 | // the header as such and will likely fail reading the IP header if this is |
| 478 | // something else than null/loopback. |
| 479 | uint32_t protocol; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 480 | TRY_PCAP(Read(&protocol, true)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 481 | if (protocol == kBsdNullLoopback1 || protocol == kBsdNullLoopback2) { |
| 482 | int result = ReadXxpIpHeader(marker); |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 483 | RTC_LOG(LS_INFO) << "Recognized loopback frame"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 484 | if (result != kResultSkip) { |
| 485 | return result; |
| 486 | } |
| 487 | } |
| 488 | |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 489 | TRY_PCAP(fseek(file_, file_pos, SEEK_SET)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 490 | |
| 491 | // Check for Ethernet II, IP frame header. |
| 492 | uint16_t type; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 493 | TRY_PCAP(Skip(kEthernetIIHeaderMacSkip)); // Source+destination MAC. |
| 494 | TRY_PCAP(Read(&type, true)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 495 | if (type == kEthertypeIp) { |
| 496 | int result = ReadXxpIpHeader(marker); |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 497 | RTC_LOG(LS_INFO) << "Recognized ethernet 2 frame"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 498 | if (result != kResultSkip) { |
| 499 | return result; |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | return kResultSkip; |
| 504 | } |
| 505 | |
| 506 | uint32_t CalcTimeDelta(uint32_t ts_sec, uint32_t ts_usec, uint32_t start_ms) { |
| 507 | // Round to nearest ms. |
| 508 | uint64_t t2_ms = ((static_cast<uint64_t>(ts_sec) * 1000000) + ts_usec + |
| 509 | 500) / 1000; |
| 510 | uint64_t t1_ms = static_cast<uint64_t>(start_ms); |
| 511 | if (t2_ms < t1_ms) { |
| 512 | return 0; |
| 513 | } else { |
| 514 | return t2_ms - t1_ms; |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | int ReadXxpIpHeader(RtpPacketMarker* marker) { |
| 519 | assert(marker); |
| 520 | |
| 521 | uint16_t version; |
| 522 | uint16_t length; |
| 523 | uint16_t id; |
| 524 | uint16_t fragment; |
| 525 | uint16_t protocol; |
| 526 | uint16_t checksum; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 527 | TRY_PCAP(Read(&version, true)); |
| 528 | TRY_PCAP(Read(&length, true)); |
| 529 | TRY_PCAP(Read(&id, true)); |
| 530 | TRY_PCAP(Read(&fragment, true)); |
| 531 | TRY_PCAP(Read(&protocol, true)); |
| 532 | TRY_PCAP(Read(&checksum, true)); |
| 533 | TRY_PCAP(Read(&marker->source_ip, true)); |
| 534 | TRY_PCAP(Read(&marker->dest_ip, true)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 535 | |
| 536 | if (((version >> 12) & 0x000f) != kIpVersion4) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 537 | RTC_LOG(LS_INFO) << "IP header is not IPv4"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 538 | return kResultSkip; |
| 539 | } |
| 540 | |
| 541 | if (fragment != kFragmentOffsetClear && |
| 542 | fragment != kFragmentOffsetDoNotFragment) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 543 | RTC_LOG(LS_INFO) << "IP fragments cannot be handled"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 544 | return kResultSkip; |
| 545 | } |
| 546 | |
| 547 | // Skip remaining fields of IP header. |
| 548 | uint16_t header_length = (version & 0x0f00) >> (8 - 2); |
| 549 | assert(header_length >= kMinIpHeaderLength); |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 550 | TRY_PCAP(Skip(header_length - kMinIpHeaderLength)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 551 | |
| 552 | protocol = protocol & 0x00ff; |
| 553 | if (protocol == kProtocolTcp) { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 554 | RTC_LOG(LS_INFO) << "TCP packets are not handled"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 555 | return kResultSkip; |
| 556 | } else if (protocol == kProtocolUdp) { |
| 557 | uint16_t length; |
| 558 | uint16_t checksum; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 559 | TRY_PCAP(Read(&marker->source_port, true)); |
| 560 | TRY_PCAP(Read(&marker->dest_port, true)); |
| 561 | TRY_PCAP(Read(&length, true)); |
| 562 | TRY_PCAP(Read(&checksum, true)); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 563 | marker->payload_length = length - kUdpHeaderLength; |
| 564 | } else { |
Mirko Bonadei | 675513b | 2017-11-09 11:09:25 +0100 | [diff] [blame] | 565 | RTC_LOG(LS_INFO) << "Unknown transport (expected UDP or TCP)"; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 566 | return kResultSkip; |
| 567 | } |
| 568 | |
| 569 | return kResultSuccess; |
| 570 | } |
| 571 | |
| 572 | int Read(uint32_t* out, bool expect_network_order) { |
| 573 | uint32_t tmp = 0; |
| 574 | if (fread(&tmp, 1, sizeof(uint32_t), file_) != sizeof(uint32_t)) { |
| 575 | return kResultFail; |
| 576 | } |
| 577 | if ((!expect_network_order && swap_pcap_byte_order_) || |
| 578 | (expect_network_order && swap_network_byte_order_)) { |
| 579 | tmp = ((tmp >> 24) & 0x000000ff) | (tmp << 24) | |
| 580 | ((tmp >> 8) & 0x0000ff00) | ((tmp << 8) & 0x00ff0000); |
| 581 | } |
| 582 | *out = tmp; |
| 583 | return kResultSuccess; |
| 584 | } |
| 585 | |
| 586 | int Read(uint16_t* out, bool expect_network_order) { |
| 587 | uint16_t tmp = 0; |
| 588 | if (fread(&tmp, 1, sizeof(uint16_t), file_) != sizeof(uint16_t)) { |
| 589 | return kResultFail; |
| 590 | } |
| 591 | if ((!expect_network_order && swap_pcap_byte_order_) || |
| 592 | (expect_network_order && swap_network_byte_order_)) { |
| 593 | tmp = ((tmp >> 8) & 0x00ff) | (tmp << 8); |
| 594 | } |
| 595 | *out = tmp; |
| 596 | return kResultSuccess; |
| 597 | } |
| 598 | |
| 599 | int Read(uint8_t* out, uint32_t count) { |
| 600 | if (fread(out, 1, count, file_) != count) { |
| 601 | return kResultFail; |
| 602 | } |
| 603 | return kResultSuccess; |
| 604 | } |
| 605 | |
| 606 | int Read(int32_t* out, bool expect_network_order) { |
| 607 | int32_t tmp = 0; |
| 608 | if (fread(&tmp, 1, sizeof(uint32_t), file_) != sizeof(uint32_t)) { |
| 609 | return kResultFail; |
| 610 | } |
| 611 | if ((!expect_network_order && swap_pcap_byte_order_) || |
| 612 | (expect_network_order && swap_network_byte_order_)) { |
| 613 | tmp = ((tmp >> 24) & 0x000000ff) | (tmp << 24) | |
| 614 | ((tmp >> 8) & 0x0000ff00) | ((tmp << 8) & 0x00ff0000); |
| 615 | } |
| 616 | *out = tmp; |
| 617 | return kResultSuccess; |
| 618 | } |
| 619 | |
| 620 | int Skip(uint32_t length) { |
| 621 | if (fseek(file_, length, SEEK_CUR) != 0) { |
| 622 | return kResultFail; |
| 623 | } |
| 624 | return kResultSuccess; |
| 625 | } |
| 626 | |
| 627 | FILE* file_; |
| 628 | bool swap_pcap_byte_order_; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 629 | const bool swap_network_byte_order_; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 630 | uint8_t read_buffer_[kMaxReadBufferSize]; |
| 631 | |
| 632 | SsrcMap packets_by_ssrc_; |
| 633 | std::vector<RtpPacketMarker> packets_; |
| 634 | PacketIterator next_packet_it_; |
| 635 | |
henrikg | 3c089d7 | 2015-09-16 05:37:44 -0700 | [diff] [blame] | 636 | RTC_DISALLOW_COPY_AND_ASSIGN(PcapReader); |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 637 | }; |
| 638 | |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 639 | RtpFileReader* RtpFileReader::Create(FileFormat format, |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 640 | const std::string& filename, |
| 641 | const std::set<uint32_t>& ssrc_filter) { |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 642 | RtpFileReaderImpl* reader = NULL; |
| 643 | switch (format) { |
| 644 | case kPcap: |
| 645 | reader = new PcapReader(); |
| 646 | break; |
| 647 | case kRtpDump: |
| 648 | reader = new RtpDumpReader(); |
| 649 | break; |
stefan@webrtc.org | 48ac226 | 2015-03-02 16:18:56 +0000 | [diff] [blame] | 650 | case kLengthPacketInterleaved: |
| 651 | reader = new InterleavedRtpFileReader(); |
| 652 | break; |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 653 | } |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 654 | if (!reader->Init(filename, ssrc_filter)) { |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 655 | delete reader; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 656 | return NULL; |
| 657 | } |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 658 | return reader; |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 659 | } |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 660 | |
stefan | b947f28 | 2015-07-17 05:27:21 -0700 | [diff] [blame] | 661 | RtpFileReader* RtpFileReader::Create(FileFormat format, |
| 662 | const std::string& filename) { |
| 663 | return RtpFileReader::Create(format, filename, std::set<uint32_t>()); |
| 664 | } |
| 665 | |
pbos@webrtc.org | 4b5625e | 2014-08-06 16:26:56 +0000 | [diff] [blame] | 666 | } // namespace test |
solenberg@webrtc.org | 56b5f77 | 2013-04-16 10:31:56 +0000 | [diff] [blame] | 667 | } // namespace webrtc |