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obs-studio/plugins/obs-outputs/librtmp/rtmp.h
Richard Stanway cc69ec16ec
obs-outputs: Update librtmp with upstream patches 
Mostly security / reliability related, fixing various access to
uninitialized data, integer overflows, etc from
https://git.ffmpeg.org/rtmpdump
2018-07-23 23:22:37 +02:00

426 lines
13 KiB
C
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#ifndef __RTMP_H__
#define __RTMP_H__
/*
* Copyright (C) 2005-2008 Team XBMC
* http://www.xbmc.org
* Copyright (C) 2008-2009 Andrej Stepanchuk
* Copyright (C) 2009-2010 Howard Chu
*
* This file is part of librtmp.
*
* librtmp is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1,
* or (at your option) any later version.
*
* librtmp is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with librtmp see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/lgpl.html
*/
#if !defined(NO_CRYPTO) && !defined(CRYPTO)
#define CRYPTO
#else
#include <sys/types.h> //for off_t
#endif
#include <errno.h>
#include <stdint.h>
#ifdef _WIN32
#ifdef _MSC_VER
#pragma warning(disable:4996) //depricated warnings
#pragma warning(disable:4244) //64bit defensive mechanism, fixed the ones that mattered
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#define SOCKET int
#endif
#include "amf.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define RTMP_LIB_VERSION 0x020300 /* 2.3 */
#define RTMP_FEATURE_HTTP 0x01
#define RTMP_FEATURE_ENC 0x02
#define RTMP_FEATURE_SSL 0x04
#define RTMP_FEATURE_MFP 0x08 /* not yet supported */
#define RTMP_FEATURE_WRITE 0x10 /* publish, not play */
#define RTMP_FEATURE_HTTP2 0x20 /* server-side rtmpt */
#define RTMP_PROTOCOL_UNDEFINED -1
#define RTMP_PROTOCOL_RTMP 0
#define RTMP_PROTOCOL_RTMPE RTMP_FEATURE_ENC
#define RTMP_PROTOCOL_RTMPT RTMP_FEATURE_HTTP
#define RTMP_PROTOCOL_RTMPS RTMP_FEATURE_SSL
#define RTMP_PROTOCOL_RTMPTE (RTMP_FEATURE_HTTP|RTMP_FEATURE_ENC)
#define RTMP_PROTOCOL_RTMPTS (RTMP_FEATURE_HTTP|RTMP_FEATURE_SSL)
#define RTMP_PROTOCOL_RTMFP RTMP_FEATURE_MFP
#define RTMP_DEFAULT_CHUNKSIZE 128
/* needs to fit largest number of bytes recv() may return */
#define RTMP_BUFFER_CACHE_SIZE (16*1024)
#define RTMP_CHANNELS 65600
extern const char RTMPProtocolStringsLower[][7];
extern const AVal RTMP_DefaultFlashVer;
extern int RTMP_ctrlC;
uint32_t RTMP_GetTime(void);
/* RTMP_PACKET_TYPE_... 0x00 */
#define RTMP_PACKET_TYPE_CHUNK_SIZE 0x01
/* RTMP_PACKET_TYPE_... 0x02 */
#define RTMP_PACKET_TYPE_BYTES_READ_REPORT 0x03
#define RTMP_PACKET_TYPE_CONTROL 0x04
#define RTMP_PACKET_TYPE_SERVER_BW 0x05
#define RTMP_PACKET_TYPE_CLIENT_BW 0x06
/* RTMP_PACKET_TYPE_... 0x07 */
#define RTMP_PACKET_TYPE_AUDIO 0x08
#define RTMP_PACKET_TYPE_VIDEO 0x09
/* RTMP_PACKET_TYPE_... 0x0A */
/* RTMP_PACKET_TYPE_... 0x0B */
/* RTMP_PACKET_TYPE_... 0x0C */
/* RTMP_PACKET_TYPE_... 0x0D */
/* RTMP_PACKET_TYPE_... 0x0E */
#define RTMP_PACKET_TYPE_FLEX_STREAM_SEND 0x0F
#define RTMP_PACKET_TYPE_FLEX_SHARED_OBJECT 0x10
#define RTMP_PACKET_TYPE_FLEX_MESSAGE 0x11
#define RTMP_PACKET_TYPE_INFO 0x12
#define RTMP_PACKET_TYPE_SHARED_OBJECT 0x13
#define RTMP_PACKET_TYPE_INVOKE 0x14
/* RTMP_PACKET_TYPE_... 0x15 */
#define RTMP_PACKET_TYPE_FLASH_VIDEO 0x16
#define RTMP_MAX_HEADER_SIZE 18
#define RTMP_PACKET_SIZE_LARGE 0
#define RTMP_PACKET_SIZE_MEDIUM 1
#define RTMP_PACKET_SIZE_SMALL 2
#define RTMP_PACKET_SIZE_MINIMUM 3
typedef struct RTMPChunk
{
int c_headerSize;
int c_chunkSize;
char *c_chunk;
char c_header[RTMP_MAX_HEADER_SIZE];
} RTMPChunk;
typedef struct RTMPPacket
{
uint8_t m_headerType;
uint8_t m_packetType;
uint8_t m_hasAbsTimestamp; /* timestamp absolute or relative? */
int m_nChannel;
uint32_t m_nTimeStamp; /* timestamp */
int32_t m_nInfoField2; /* last 4 bytes in a long header */
uint32_t m_nBodySize;
uint32_t m_nBytesRead;
RTMPChunk *m_chunk;
char *m_body;
} RTMPPacket;
typedef struct RTMPSockBuf
{
SOCKET sb_socket;
int sb_size; /* number of unprocessed bytes in buffer */
char *sb_start; /* pointer into sb_pBuffer of next byte to process */
char sb_buf[RTMP_BUFFER_CACHE_SIZE]; /* data read from socket */
int sb_timedout;
void *sb_ssl;
} RTMPSockBuf;
void RTMPPacket_Reset(RTMPPacket *p);
void RTMPPacket_Dump(RTMPPacket *p);
int RTMPPacket_Alloc(RTMPPacket *p, uint32_t nSize);
void RTMPPacket_Free(RTMPPacket *p);
#define RTMPPacket_IsReady(a) ((a)->m_nBytesRead == (a)->m_nBodySize)
typedef struct RTMP_Stream {
int id;
AVal playpath;
} RTMP_Stream;
typedef struct RTMP_LNK
{
#define RTMP_MAX_STREAMS 8
RTMP_Stream streams[RTMP_MAX_STREAMS];
int nStreams;
int curStreamIdx;
int playingStreams;
AVal hostname;
AVal sockshost;
AVal tcUrl;
AVal swfUrl;
AVal pageUrl;
AVal app;
AVal auth;
AVal flashVer;
AVal subscribepath;
AVal usherToken;
AVal token;
AVal pubUser;
AVal pubPasswd;
AMFObject extras;
int edepth;
int seekTime;
int stopTime;
#define RTMP_LF_AUTH 0x0001 /* using auth param */
#define RTMP_LF_LIVE 0x0002 /* stream is live */
#define RTMP_LF_SWFV 0x0004 /* do SWF verification */
#define RTMP_LF_PLST 0x0008 /* send playlist before play */
#define RTMP_LF_BUFX 0x0010 /* toggle stream on BufferEmpty msg */
#define RTMP_LF_FTCU 0x0020 /* free tcUrl on close */
int lFlags;
int swfAge;
int protocol;
int timeout; /* connection timeout in seconds */
#define RTMP_PUB_NAME 0x0001 /* send login to server */
#define RTMP_PUB_RESP 0x0002 /* send salted password hash */
#define RTMP_PUB_ALLOC 0x0004 /* allocated data for new tcUrl & app */
#define RTMP_PUB_CLEAN 0x0008 /* need to free allocated data for newer tcUrl & app at exit */
#define RTMP_PUB_CLATE 0x0010 /* late clean tcUrl & app at exit */
int pFlags;
unsigned short socksport;
unsigned short port;
#ifdef CRYPTO
#define RTMP_SWF_HASHLEN 32
void *dh; /* for encryption */
void *rc4keyIn;
void *rc4keyOut;
uint32_t SWFSize;
uint8_t SWFHash[RTMP_SWF_HASHLEN];
char SWFVerificationResponse[RTMP_SWF_HASHLEN+10];
#endif
} RTMP_LNK;
/* state for read() wrapper */
typedef struct RTMP_READ
{
char *buf;
char *bufpos;
unsigned int buflen;
uint32_t timestamp;
uint8_t dataType;
uint8_t flags;
#define RTMP_READ_HEADER 0x01
#define RTMP_READ_RESUME 0x02
#define RTMP_READ_NO_IGNORE 0x04
#define RTMP_READ_GOTKF 0x08
#define RTMP_READ_GOTFLVK 0x10
#define RTMP_READ_SEEKING 0x20
int8_t status;
#define RTMP_READ_COMPLETE -3
#define RTMP_READ_ERROR -2
#define RTMP_READ_EOF -1
#define RTMP_READ_IGNORE 0
/* if bResume == TRUE */
uint8_t initialFrameType;
uint32_t nResumeTS;
char *metaHeader;
char *initialFrame;
uint32_t nMetaHeaderSize;
uint32_t nInitialFrameSize;
uint32_t nIgnoredFrameCounter;
uint32_t nIgnoredFlvFrameCounter;
} RTMP_READ;
typedef struct RTMP_METHOD
{
AVal name;
int num;
} RTMP_METHOD;
typedef struct RTMP_BINDINFO
{
struct sockaddr_storage addr;
int addrLen;
} RTMP_BINDINFO;
typedef int (*CUSTOMSEND)(RTMPSockBuf*, const char *, int, void*);
typedef struct RTMP
{
int m_inChunkSize;
int m_outChunkSize;
int m_nBWCheckCounter;
int m_nBytesIn;
int m_nBytesInSent;
int m_nBufferMS;
int m_stream_id; /* returned in _result from createStream */
int m_mediaChannel;
uint32_t m_mediaStamp;
uint32_t m_pauseStamp;
int m_pausing;
int m_nServerBW;
int m_nClientBW;
uint8_t m_nClientBW2;
uint8_t m_bPlaying;
uint8_t m_bSendEncoding;
uint8_t m_bSendCounter;
uint8_t m_bUseNagle;
uint8_t m_bCustomSend;
void* m_customSendParam;
CUSTOMSEND m_customSendFunc;
RTMP_BINDINFO m_bindIP;
uint8_t m_bSendChunkSizeInfo;
int m_numInvokes;
int m_numCalls;
RTMP_METHOD *m_methodCalls; /* remote method calls queue */
int m_channelsAllocatedIn;
int m_channelsAllocatedOut;
RTMPPacket **m_vecChannelsIn;
RTMPPacket **m_vecChannelsOut;
int *m_channelTimestamp; /* abs timestamp of last packet */
double m_fAudioCodecs; /* audioCodecs for the connect packet */
double m_fVideoCodecs; /* videoCodecs for the connect packet */
double m_fEncoding; /* AMF0 or AMF3 */
double m_fDuration; /* duration of stream in seconds */
int m_msgCounter; /* RTMPT stuff */
int m_polling;
int m_resplen;
int m_unackd;
AVal m_clientID;
RTMP_READ m_read;
RTMPPacket m_write;
RTMPSockBuf m_sb;
RTMP_LNK Link;
int connect_time_ms;
int last_error_code;
} RTMP;
int RTMP_ParseURL(const char *url, int *protocol, AVal *host,
unsigned int *port, AVal *app);
void RTMP_ParsePlaypath(AVal *in, AVal *out);
void RTMP_SetBufferMS(RTMP *r, int size);
void RTMP_UpdateBufferMS(RTMP *r);
int RTMP_SetOpt(RTMP *r, const AVal *opt, AVal *arg);
int RTMP_SetupURL(RTMP *r, char *url);
int RTMP_AddStream(RTMP *r, const char *playpath);
void RTMP_SetupStream(RTMP *r, int protocol,
AVal *hostname,
unsigned int port,
AVal *sockshost,
AVal *playpath,
AVal *tcUrl,
AVal *swfUrl,
AVal *pageUrl,
AVal *app,
AVal *auth,
AVal *swfSHA256Hash,
uint32_t swfSize,
AVal *flashVer,
AVal *subscribepath,
AVal *usherToken,
int dStart,
int dStop, int bLiveStream, long int timeout);
int RTMP_Connect(RTMP *r, RTMPPacket *cp);
struct sockaddr;
int RTMP_Connect0(RTMP *r, struct sockaddr *svc, socklen_t addrlen);
int RTMP_Connect1(RTMP *r, RTMPPacket *cp);
int RTMP_Serve(RTMP *r);
int RTMP_TLS_Accept(RTMP *r, void *ctx);
int RTMP_ReadPacket(RTMP *r, RTMPPacket *packet);
int RTMP_SendPacket(RTMP *r, RTMPPacket *packet, int queue);
int RTMP_SendChunk(RTMP *r, RTMPChunk *chunk);
int RTMP_IsConnected(RTMP *r);
SOCKET RTMP_Socket(RTMP *r);
int RTMP_IsTimedout(RTMP *r);
double RTMP_GetDuration(RTMP *r);
int RTMP_ToggleStream(RTMP *r);
int RTMP_ConnectStream(RTMP *r, int seekTime);
int RTMP_ReconnectStream(RTMP *r, int seekTime, int streamIdx);
void RTMP_DeleteStream(RTMP *r, int streamIdx);
int RTMP_GetNextMediaPacket(RTMP *r, RTMPPacket *packet);
int RTMP_ClientPacket(RTMP *r, RTMPPacket *packet);
void RTMP_Init(RTMP *r);
void RTMP_Close(RTMP *r);
RTMP *RTMP_Alloc(void);
void RTMP_Free(RTMP *r);
void RTMP_EnableWrite(RTMP *r);
void *RTMP_TLS_AllocServerContext(const char* cert, const char* key);
void RTMP_TLS_FreeServerContext(void *ctx);
int RTMP_LibVersion(void);
void RTMP_UserInterrupt(void); /* user typed Ctrl-C */
int RTMP_SendCtrl(RTMP *r, short nType, unsigned int nObject,
unsigned int nTime);
/* caller probably doesn't know current timestamp, should
* just use RTMP_Pause instead
*/
int RTMP_SendPause(RTMP *r, int DoPause, int dTime);
int RTMP_Pause(RTMP *r, int DoPause);
int RTMP_FindFirstMatchingProperty(AMFObject *obj, const AVal *name,
AMFObjectProperty * p);
int RTMPSockBuf_Fill(RTMPSockBuf *sb);
int RTMPSockBuf_Send(RTMPSockBuf *sb, const char *buf, int len);
int RTMPSockBuf_Close(RTMPSockBuf *sb);
int RTMP_SendCreateStream(RTMP *r);
int RTMP_SendSeek(RTMP *r, int dTime);
int RTMP_SendServerBW(RTMP *r);
int RTMP_SendClientBW(RTMP *r);
void RTMP_DropRequest(RTMP *r, int i, int freeit);
int RTMP_Read(RTMP *r, char *buf, int size);
int RTMP_Write(RTMP *r, const char *buf, int size, int streamIdx);
/* hashswf.c */
int RTMP_HashSWF(const char *url, unsigned int *size, unsigned char *hash,
int age);
#ifdef __cplusplus
};
#endif
#endif
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