187 lines
No EOL
7.6 KiB
C++
187 lines
No EOL
7.6 KiB
C++
/// \file RTMP_Parser/main.cpp
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/// Debugging tool for RTMP data.
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/// Expects RTMP data of one side of the conversion through stdin, outputs human-readable information to stderr.
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/// Automatically skips 3073 bytes of handshake data.
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/// Optionally reconstructs an FLV file
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/// Singular argument is a bitmask indicating the following (defaulting to 0):
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/// - 0 = Info: Output chunk meanings and fulltext commands to stderr.
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/// - 1 = Reconstruct: Output valid .flv file to stdout.
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/// - 2 = Explicit: Audio/video data details.
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/// - 4 = Verbose: details about every whole chunk.
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#define DEBUG 10 //maximum debugging level
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#include <cstdlib>
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <iostream>
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#include "../../util/flv_tag.h"
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#include "../../util/amf.h"
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#include "../../util/rtmpchunks.h"
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int Detail = 0;
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#define DETAIL_RECONSTRUCT 1
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#define DETAIL_EXPLICIT 2
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#define DETAIL_VERBOSE 4
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/// Debugging tool for RTMP data.
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/// Expects RTMP data of one side of the conversion through stdin, outputs human-readable information to stderr.
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/// Will output FLV file to stdout, if available
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/// Automatically skips 3073 bytes of handshake data.
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int main(int argc, char ** argv){
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if (argc > 1){
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Detail = atoi(argv[1]);
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fprintf(stderr, "Detail level set:\n");
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if ((Detail & DETAIL_RECONSTRUCT) == DETAIL_RECONSTRUCT){
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fprintf(stderr, " - Will reconstuct FLV file to stdout\n");
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std::cout.write(FLV::Header, 13);
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}
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if ((Detail & DETAIL_EXPLICIT) == DETAIL_EXPLICIT){
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fprintf(stderr, " - Will list explicit video/audio data information\n");
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}
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if ((Detail & DETAIL_VERBOSE) == DETAIL_VERBOSE){
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fprintf(stderr, " - Will list verbose chunk information\n");
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}
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}
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std::string inbuffer;
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while (std::cin.good()){inbuffer += std::cin.get();}//read all of std::cin to temp
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inbuffer.erase(0, 3073);//strip the handshake part
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RTMPStream::Chunk next;
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FLV::Tag F;//FLV holder
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AMF::Object amfdata("empty", AMF::AMF0_DDV_CONTAINER);
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AMF::Object3 amf3data("empty", AMF::AMF3_DDV_CONTAINER);
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while (next.Parse(inbuffer)){
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if ((Detail & DETAIL_VERBOSE) == DETAIL_VERBOSE){
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fprintf(stderr, "Chunk info: [%#2X] CS ID %u, timestamp %u, len %u, type ID %u, Stream ID %u\n", next.headertype, next.cs_id, next.timestamp, next.len, next.msg_type_id, next.msg_stream_id);
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}
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switch (next.msg_type_id){
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case 0://does not exist
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fprintf(stderr, "Error chunk - %i, %i, %i, %i, %i\n", next.cs_id, next.timestamp, next.real_len, next.len_left, next.msg_stream_id);
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//return 0;
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break;//happens when connection breaks unexpectedly
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case 1://set chunk size
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RTMPStream::chunk_rec_max = ntohl(*(int*)next.data.c_str());
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fprintf(stderr, "CTRL: Set chunk size: %i\n", RTMPStream::chunk_rec_max);
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break;
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case 2://abort message - we ignore this one
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fprintf(stderr, "CTRL: Abort message: %i\n", ntohl(*(int*)next.data.c_str()));
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//4 bytes of stream id to drop
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break;
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case 3://ack
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RTMPStream::snd_window_at = ntohl(*(int*)next.data.c_str());
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fprintf(stderr, "CTRL: Acknowledgement: %i\n", RTMPStream::snd_window_at);
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break;
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case 4:{
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short int ucmtype = ntohs(*(short int*)next.data.c_str());
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switch (ucmtype){
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case 0:
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fprintf(stderr, "CTRL: User control message: stream begin %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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case 1:
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fprintf(stderr, "CTRL: User control message: stream EOF %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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case 2:
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fprintf(stderr, "CTRL: User control message: stream dry %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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case 3:
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fprintf(stderr, "CTRL: User control message: setbufferlen %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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case 4:
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fprintf(stderr, "CTRL: User control message: streamisrecorded %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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case 6:
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fprintf(stderr, "CTRL: User control message: pingrequest %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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case 7:
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fprintf(stderr, "CTRL: User control message: pingresponse %u\n", ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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default:
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fprintf(stderr, "CTRL: User control message: UNKNOWN %hu - %u\n", ucmtype, ntohl(*(unsigned int*)(next.data.c_str()+2)));
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break;
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}
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} break;
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case 5://window size of other end
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RTMPStream::rec_window_size = ntohl(*(int*)next.data.c_str());
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RTMPStream::rec_window_at = RTMPStream::rec_cnt;
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fprintf(stderr, "CTRL: Window size: %i\n", RTMPStream::rec_window_size);
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break;
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case 6:
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RTMPStream::snd_window_size = ntohl(*(int*)next.data.c_str());
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//4 bytes window size, 1 byte limit type (ignored)
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fprintf(stderr, "CTRL: Set peer bandwidth: %i\n", RTMPStream::snd_window_size);
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break;
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case 8:
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if (Detail & (DETAIL_EXPLICIT | DETAIL_RECONSTRUCT)){
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F.ChunkLoader(next);
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if ((Detail & DETAIL_EXPLICIT) == DETAIL_EXPLICIT){
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fprintf(stderr, "Received %i bytes audio data\n", next.len);
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std::cerr << "Got a " << F.len << " bytes " << F.tagType() << " FLV tag of time " << F.tagTime() << "." << std::endl;
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}
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if ((Detail & DETAIL_RECONSTRUCT) == DETAIL_RECONSTRUCT){
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std::cout.write(F.data, F.len);
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}
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}
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break;
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case 9:
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if (Detail & (DETAIL_EXPLICIT | DETAIL_RECONSTRUCT)){
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F.ChunkLoader(next);
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if ((Detail & DETAIL_EXPLICIT) == DETAIL_EXPLICIT){
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fprintf(stderr, "Received %i bytes video data\n", next.len);
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std::cerr << "Got a " << F.len << " bytes " << F.tagType() << " FLV tag of time " << F.tagTime() << "." << std::endl;
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}
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if ((Detail & DETAIL_RECONSTRUCT) == DETAIL_RECONSTRUCT){
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std::cout.write(F.data, F.len);
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}
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}
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break;
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case 15:
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fprintf(stderr, "Received AFM3 data message\n");
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break;
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case 16:
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fprintf(stderr, "Received AFM3 shared object\n");
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break;
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case 17:{
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fprintf(stderr, "Received AFM3 command message:\n");
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char soort = next.data[0];
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next.data = next.data.substr(1);
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if (soort == 0){
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amfdata = AMF::parse(next.data);
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std::cerr << amfdata.Print() << std::endl;
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}else{
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amf3data = AMF::parse3(next.data);
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std::cerr << amf3data.Print() << std::endl;
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}
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} break;
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case 18:{
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fprintf(stderr, "Received AFM0 data message (metadata):\n");
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amfdata = AMF::parse(next.data);
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amfdata.Print();
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if ((Detail & DETAIL_RECONSTRUCT) == DETAIL_RECONSTRUCT){
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F.ChunkLoader(next);
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std::cout.write(F.data, F.len);
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}
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} break;
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case 19:
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fprintf(stderr, "Received AFM0 shared object\n");
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break;
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case 20:{//AMF0 command message
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fprintf(stderr, "Received AFM0 command message:\n");
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amfdata = AMF::parse(next.data);
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std::cerr << amfdata.Print() << std::endl;
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} break;
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case 22:
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fprintf(stderr, "Received aggregate message\n");
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break;
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default:
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fprintf(stderr, "Unknown chunk received! Probably protocol corruption, stopping parsing of incoming data.\n");
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return 1;
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break;
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}//switch for type of chunk
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}//while chunk parsed
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fprintf(stderr, "No more readable data\n");
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return 0;
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}//main
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