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/*************************************************************************** 
 *                      _   _ ____  _ 
 *  Project         ___| | | |  _ \| | 
 *                 / __| | | | |_) | | 
 *                | (__| |_| |  _ <| |___ 
 *                 \___|\___/|_| \_\_____| 
 * 
 * Copyright (C) 2012 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
 * Copyright (C) 2010, Howard Chu, <hyc@highlandsun.com> 
 * 
 * This software is licensed as described in the file COPYING, which 
 * you should have received as part of this distribution. The terms 
 * are also available at https://curl.se/docs/copyright.html.
 * 
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 
 * copies of the Software, and permit persons to whom the Software is 
 * furnished to do so, under the terms of the COPYING file. 
 * 
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 
 * KIND, either express or implied. 
 * 
 ***************************************************************************/ 
 
#include "curl_setup.h" 
 
#ifdef USE_LIBRTMP 
 
#include "curl_rtmp.h"
#include "urldata.h" 
#include "nonblock.h" /* for curlx_nonblock */ 
#include "progress.h" /* for Curl_pgrsSetUploadSize */ 
#include "transfer.h" 
#include "warnless.h" 
#include <curl/curl.h> 
#include <librtmp/rtmp.h> 
#include "curl_memory.h" 
/* The last #include file should be: */ 
#include "memdebug.h" 
 
#if defined(WIN32) && !defined(USE_LWIPSOCK)
#define setsockopt(a,b,c,d,e) (setsockopt)(a,b,c,(const char *)d,(int)e) 
#define SET_RCVTIMEO(tv,s)   int tv = s*1000 
#elif defined(LWIP_SO_SNDRCVTIMEO_NONSTANDARD)
#define SET_RCVTIMEO(tv,s)   int tv = s*1000
#else 
#define SET_RCVTIMEO(tv,s)   struct timeval tv = {s,0} 
#endif 
 
#define DEF_BUFTIME    (2*60*60*1000)    /* 2 hours */ 
 
static CURLcode rtmp_setup_connection(struct connectdata *conn);
static CURLcode rtmp_do(struct connectdata *conn, bool *done); 
static CURLcode rtmp_done(struct connectdata *conn, CURLcode, bool premature); 
static CURLcode rtmp_connect(struct connectdata *conn, bool *done); 
static CURLcode rtmp_disconnect(struct connectdata *conn, bool dead); 
 
static Curl_recv rtmp_recv; 
static Curl_send rtmp_send; 
 
/* 
 * RTMP protocol handler.h, based on https://rtmpdump.mplayerhq.hu
 */ 
 
const struct Curl_handler Curl_handler_rtmp = { 
  "RTMP",                               /* scheme */ 
  rtmp_setup_connection,                /* setup_connection */
  rtmp_do,                              /* do_it */ 
  rtmp_done,                            /* done */ 
  ZERO_NULL,                            /* do_more */ 
  rtmp_connect,                         /* connect_it */ 
  ZERO_NULL,                            /* connecting */ 
  ZERO_NULL,                            /* doing */ 
  ZERO_NULL,                            /* proto_getsock */ 
  ZERO_NULL,                            /* doing_getsock */ 
  ZERO_NULL,                            /* domore_getsock */ 
  ZERO_NULL,                            /* perform_getsock */ 
  rtmp_disconnect,                      /* disconnect */ 
  ZERO_NULL,                            /* readwrite */ 
  ZERO_NULL,                            /* connection_check */
  PORT_RTMP,                            /* defport */ 
  CURLPROTO_RTMP,                       /* protocol */ 
  CURLPROTO_RTMP,                       /* family */
  PROTOPT_NONE                          /* flags*/ 
}; 
 
const struct Curl_handler Curl_handler_rtmpt = { 
  "RTMPT",                              /* scheme */ 
  rtmp_setup_connection,                /* setup_connection */
  rtmp_do,                              /* do_it */ 
  rtmp_done,                            /* done */ 
  ZERO_NULL,                            /* do_more */ 
  rtmp_connect,                         /* connect_it */ 
  ZERO_NULL,                            /* connecting */ 
  ZERO_NULL,                            /* doing */ 
  ZERO_NULL,                            /* proto_getsock */ 
  ZERO_NULL,                            /* doing_getsock */ 
  ZERO_NULL,                            /* domore_getsock */ 
  ZERO_NULL,                            /* perform_getsock */ 
  rtmp_disconnect,                      /* disconnect */ 
  ZERO_NULL,                            /* readwrite */ 
  ZERO_NULL,                            /* connection_check */
  PORT_RTMPT,                           /* defport */ 
  CURLPROTO_RTMPT,                      /* protocol */ 
  CURLPROTO_RTMPT,                      /* family */
  PROTOPT_NONE                          /* flags*/ 
}; 
 
const struct Curl_handler Curl_handler_rtmpe = { 
  "RTMPE",                              /* scheme */ 
  rtmp_setup_connection,                /* setup_connection */
  rtmp_do,                              /* do_it */ 
  rtmp_done,                            /* done */ 
  ZERO_NULL,                            /* do_more */ 
  rtmp_connect,                         /* connect_it */ 
  ZERO_NULL,                            /* connecting */ 
  ZERO_NULL,                            /* doing */ 
  ZERO_NULL,                            /* proto_getsock */ 
  ZERO_NULL,                            /* doing_getsock */ 
  ZERO_NULL,                            /* domore_getsock */ 
  ZERO_NULL,                            /* perform_getsock */ 
  rtmp_disconnect,                      /* disconnect */ 
  ZERO_NULL,                            /* readwrite */ 
  ZERO_NULL,                            /* connection_check */
  PORT_RTMP,                            /* defport */ 
  CURLPROTO_RTMPE,                      /* protocol */ 
  CURLPROTO_RTMPE,                      /* family */
  PROTOPT_NONE                          /* flags*/ 
}; 
 
const struct Curl_handler Curl_handler_rtmpte = { 
  "RTMPTE",                             /* scheme */ 
  rtmp_setup_connection,                /* setup_connection */
  rtmp_do,                              /* do_it */ 
  rtmp_done,                            /* done */ 
  ZERO_NULL,                            /* do_more */ 
  rtmp_connect,                         /* connect_it */ 
  ZERO_NULL,                            /* connecting */ 
  ZERO_NULL,                            /* doing */ 
  ZERO_NULL,                            /* proto_getsock */ 
  ZERO_NULL,                            /* doing_getsock */ 
  ZERO_NULL,                            /* domore_getsock */ 
  ZERO_NULL,                            /* perform_getsock */ 
  rtmp_disconnect,                      /* disconnect */ 
  ZERO_NULL,                            /* readwrite */ 
  ZERO_NULL,                            /* connection_check */
  PORT_RTMPT,                           /* defport */ 
  CURLPROTO_RTMPTE,                     /* protocol */ 
  CURLPROTO_RTMPTE,                     /* family */
  PROTOPT_NONE                          /* flags*/ 
}; 
 
const struct Curl_handler Curl_handler_rtmps = { 
  "RTMPS",                              /* scheme */ 
  rtmp_setup_connection,                /* setup_connection */
  rtmp_do,                              /* do_it */ 
  rtmp_done,                            /* done */ 
  ZERO_NULL,                            /* do_more */ 
  rtmp_connect,                         /* connect_it */ 
  ZERO_NULL,                            /* connecting */ 
  ZERO_NULL,                            /* doing */ 
  ZERO_NULL,                            /* proto_getsock */ 
  ZERO_NULL,                            /* doing_getsock */ 
  ZERO_NULL,                            /* domore_getsock */ 
  ZERO_NULL,                            /* perform_getsock */ 
  rtmp_disconnect,                      /* disconnect */ 
  ZERO_NULL,                            /* readwrite */ 
  ZERO_NULL,                            /* connection_check */
  PORT_RTMPS,                           /* defport */ 
  CURLPROTO_RTMPS,                      /* protocol */ 
  CURLPROTO_RTMP,                       /* family */
  PROTOPT_NONE                          /* flags*/ 
}; 
 
const struct Curl_handler Curl_handler_rtmpts = { 
  "RTMPTS",                             /* scheme */ 
  rtmp_setup_connection,                /* setup_connection */
  rtmp_do,                              /* do_it */ 
  rtmp_done,                            /* done */ 
  ZERO_NULL,                            /* do_more */ 
  rtmp_connect,                         /* connect_it */ 
  ZERO_NULL,                            /* connecting */ 
  ZERO_NULL,                            /* doing */ 
  ZERO_NULL,                            /* proto_getsock */ 
  ZERO_NULL,                            /* doing_getsock */ 
  ZERO_NULL,                            /* domore_getsock */ 
  ZERO_NULL,                            /* perform_getsock */ 
  rtmp_disconnect,                      /* disconnect */ 
  ZERO_NULL,                            /* readwrite */ 
  ZERO_NULL,                            /* connection_check */
  PORT_RTMPS,                           /* defport */ 
  CURLPROTO_RTMPTS,                     /* protocol */ 
  CURLPROTO_RTMPT,                      /* family */
  PROTOPT_NONE                          /* flags*/ 
}; 
 
static CURLcode rtmp_setup_connection(struct connectdata *conn)
{ 
  RTMP *r = RTMP_Alloc(); 
  if(!r) 
    return CURLE_OUT_OF_MEMORY; 
 
  RTMP_Init(r); 
  RTMP_SetBufferMS(r, DEF_BUFTIME); 
  if(!RTMP_SetupURL(r, conn->data->change.url)) { 
    RTMP_Free(r); 
    return CURLE_URL_MALFORMAT; 
  } 
  conn->proto.rtmp = r;
  return CURLE_OK; 
} 
 
static CURLcode rtmp_connect(struct connectdata *conn, bool *done) 
{ 
  RTMP *r = conn->proto.rtmp;
  SET_RCVTIMEO(tv, 10);
 
  r->m_sb.sb_socket = (int)conn->sock[FIRSTSOCKET];
 
  /* We have to know if it's a write before we send the 
   * connect request packet 
   */ 
  if(conn->data->set.upload) 
    r->Link.protocol |= RTMP_FEATURE_WRITE; 
 
  /* For plain streams, use the buffer toggle trick to keep data flowing */ 
  if(!(r->Link.lFlags & RTMP_LF_LIVE) && 
     !(r->Link.protocol & RTMP_FEATURE_HTTP)) 
    r->Link.lFlags |= RTMP_LF_BUFX; 
 
  (void)curlx_nonblock(r->m_sb.sb_socket, FALSE);
  setsockopt(r->m_sb.sb_socket, SOL_SOCKET, SO_RCVTIMEO, 
             (char *)&tv, sizeof(tv)); 
 
  if(!RTMP_Connect1(r, NULL)) 
    return CURLE_FAILED_INIT; 
 
  /* Clients must send a periodic BytesReceived report to the server */ 
  r->m_bSendCounter = true; 
 
  *done = TRUE; 
  conn->recv[FIRSTSOCKET] = rtmp_recv; 
  conn->send[FIRSTSOCKET] = rtmp_send; 
  return CURLE_OK; 
} 
 
static CURLcode rtmp_do(struct connectdata *conn, bool *done) 
{ 
  struct Curl_easy *data = conn->data;
  RTMP *r = conn->proto.rtmp;
 
  if(!RTMP_ConnectStream(r, 0)) 
    return CURLE_FAILED_INIT; 
 
  if(conn->data->set.upload) { 
    Curl_pgrsSetUploadSize(data, data->state.infilesize);
    Curl_setup_transfer(data, -1, -1, FALSE, FIRSTSOCKET);
  } 
  else 
    Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
  *done = TRUE; 
  return CURLE_OK; 
} 
 
static CURLcode rtmp_done(struct connectdata *conn, CURLcode status, 
                          bool premature) 
{ 
  (void)conn; /* unused */ 
  (void)status; /* unused */ 
  (void)premature; /* unused */ 
 
  return CURLE_OK; 
} 
 
static CURLcode rtmp_disconnect(struct connectdata *conn, 
                                bool dead_connection) 
{ 
  RTMP *r = conn->proto.rtmp;
  (void)dead_connection; 
  if(r) { 
    conn->proto.rtmp = NULL;
    RTMP_Close(r); 
    RTMP_Free(r); 
  } 
  return CURLE_OK; 
} 
 
static ssize_t rtmp_recv(struct connectdata *conn, int sockindex, char *buf, 
                         size_t len, CURLcode *err) 
{ 
  RTMP *r = conn->proto.rtmp;
  ssize_t nread; 
 
  (void)sockindex; /* unused */ 
 
  nread = RTMP_Read(r, buf, curlx_uztosi(len)); 
  if(nread < 0) { 
    if(r->m_read.status == RTMP_READ_COMPLETE || 
        r->m_read.status == RTMP_READ_EOF) { 
      conn->data->req.size = conn->data->req.bytecount; 
      nread = 0; 
    } 
    else 
      *err = CURLE_RECV_ERROR; 
  } 
  return nread; 
} 
 
static ssize_t rtmp_send(struct connectdata *conn, int sockindex, 
                         const void *buf, size_t len, CURLcode *err) 
{ 
  RTMP *r = conn->proto.rtmp;
  ssize_t num; 
 
  (void)sockindex; /* unused */ 
 
  num = RTMP_Write(r, (char *)buf, curlx_uztosi(len)); 
  if(num < 0) 
    *err = CURLE_SEND_ERROR; 
 
  return num; 
} 
#endif  /* USE_LIBRTMP */