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rtmpproto.c
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1 /*
2  * RTMP network protocol
3  * Copyright (c) 2009 Konstantin Shishkov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * RTMP protocol
25  */
26 
27 #include "config_components.h"
28 
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/base64.h"
32 #include "libavutil/intfloat.h"
33 #include "libavutil/lfg.h"
34 #include "libavutil/md5.h"
35 #include "libavutil/mem.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/random_seed.h"
38 #include "avformat.h"
39 #include "internal.h"
40 
41 #include "network.h"
42 
43 #include "flv.h"
44 #include "rtmp.h"
45 #include "rtmpcrypt.h"
46 #include "rtmppkt.h"
47 #include "url.h"
48 #include "version.h"
49 
50 #if CONFIG_ZLIB
51 #include <zlib.h>
52 #endif
53 
54 #define APP_MAX_LENGTH 1024
55 #define TCURL_MAX_LENGTH 1024
56 #define FLASHVER_MAX_LENGTH 64
57 #define RTMP_PKTDATA_DEFAULT_SIZE 4096
58 #define RTMP_HEADER 11
59 
60 /** RTMP protocol handler state */
61 typedef enum {
62  STATE_START, ///< client has not done anything yet
63  STATE_HANDSHAKED, ///< client has performed handshake
64  STATE_FCPUBLISH, ///< client FCPublishing stream (for output)
65  STATE_PLAYING, ///< client has started receiving multimedia data from server
66  STATE_SEEKING, ///< client has started the seek operation. Back on STATE_PLAYING when the time comes
67  STATE_PUBLISHING, ///< client has started sending multimedia data to server (for output)
68  STATE_RECEIVING, ///< received a publish command (for input)
69  STATE_SENDING, ///< received a play command (for output)
70  STATE_STOPPED, ///< the broadcast has been stopped
71 } ClientState;
72 
73 typedef struct TrackedMethod {
74  char *name;
75  int id;
76 } TrackedMethod;
77 
78 /** protocol handler context */
79 typedef struct RTMPContext {
80  const AVClass *class;
81  URLContext* stream; ///< TCP stream used in interactions with RTMP server
82  RTMPPacket *prev_pkt[2]; ///< packet history used when reading and sending packets ([0] for reading, [1] for writing)
83  int nb_prev_pkt[2]; ///< number of elements in prev_pkt
84  int in_chunk_size; ///< size of the chunks incoming RTMP packets are divided into
85  int out_chunk_size; ///< size of the chunks outgoing RTMP packets are divided into
86  int is_input; ///< input/output flag
87  char *playpath; ///< stream identifier to play (with possible "mp4:" prefix)
88  int live; ///< 0: recorded, -1: live, -2: both
89  char *app; ///< name of application
90  char *conn; ///< append arbitrary AMF data to the Connect message
91  ClientState state; ///< current state
92  int stream_id; ///< ID assigned by the server for the stream
93  uint8_t* flv_data; ///< buffer with data for demuxer
94  int flv_size; ///< current buffer size
95  int flv_off; ///< number of bytes read from current buffer
96  int flv_nb_packets; ///< number of flv packets published
97  RTMPPacket out_pkt; ///< rtmp packet, created from flv a/v or metadata (for output)
98  uint32_t receive_report_size; ///< number of bytes after which we should report the number of received bytes to the peer
99  uint64_t bytes_read; ///< number of bytes read from server
100  uint64_t last_bytes_read; ///< number of bytes read last reported to server
101  uint32_t last_timestamp; ///< last timestamp received in a packet
102  int skip_bytes; ///< number of bytes to skip from the input FLV stream in the next write call
103  int has_audio; ///< presence of audio data
104  int has_video; ///< presence of video data
105  int received_metadata; ///< Indicates if we have received metadata about the streams
106  uint8_t flv_header[RTMP_HEADER]; ///< partial incoming flv packet header
107  int flv_header_bytes; ///< number of initialized bytes in flv_header
108  int nb_invokes; ///< keeps track of invoke messages
109  char* tcurl; ///< url of the target stream
110  char* flashver; ///< version of the flash plugin
111  char* swfhash; ///< SHA256 hash of the decompressed SWF file (32 bytes)
112  int swfhash_len; ///< length of the SHA256 hash
113  int swfsize; ///< size of the decompressed SWF file
114  char* swfurl; ///< url of the swf player
115  char* swfverify; ///< URL to player swf file, compute hash/size automatically
116  char swfverification[42]; ///< hash of the SWF verification
117  char* pageurl; ///< url of the web page
118  char* subscribe; ///< name of live stream to subscribe
119  int max_sent_unacked; ///< max unacked sent bytes
120  int client_buffer_time; ///< client buffer time in ms
121  int flush_interval; ///< number of packets flushed in the same request (RTMPT only)
122  int encrypted; ///< use an encrypted connection (RTMPE only)
123  TrackedMethod*tracked_methods; ///< tracked methods buffer
124  int nb_tracked_methods; ///< number of tracked methods
125  int tracked_methods_size; ///< size of the tracked methods buffer
126  int listen; ///< listen mode flag
127  int listen_timeout; ///< listen timeout to wait for new connections
128  int nb_streamid; ///< The next stream id to return on createStream calls
129  double duration; ///< Duration of the stream in seconds as returned by the server (only valid if non-zero)
130  int tcp_nodelay; ///< Use TCP_NODELAY to disable Nagle's algorithm if set to 1
131  char *enhanced_codecs; ///< codec list in enhanced rtmp
132  char username[50];
133  char password[50];
134  char auth_params[500];
135  int do_reconnect;
136  int auth_tried;
137 } RTMPContext;
138 
139 #define PLAYER_KEY_OPEN_PART_LEN 30 ///< length of partial key used for first client digest signing
140 /** Client key used for digest signing */
141 static const uint8_t rtmp_player_key[] = {
142  'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ',
143  'F', 'l', 'a', 's', 'h', ' ', 'P', 'l', 'a', 'y', 'e', 'r', ' ', '0', '0', '1',
144 
145  0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02,
146  0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8,
147  0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE
148 };
149 
150 #define SERVER_KEY_OPEN_PART_LEN 36 ///< length of partial key used for first server digest signing
151 /** Key used for RTMP server digest signing */
152 static const uint8_t rtmp_server_key[] = {
153  'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ',
154  'F', 'l', 'a', 's', 'h', ' ', 'M', 'e', 'd', 'i', 'a', ' ',
155  'S', 'e', 'r', 'v', 'e', 'r', ' ', '0', '0', '1',
156 
157  0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02,
158  0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8,
159  0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE
160 };
161 
162 static int handle_chunk_size(URLContext *s, RTMPPacket *pkt);
163 static int handle_window_ack_size(URLContext *s, RTMPPacket *pkt);
164 static int handle_set_peer_bw(URLContext *s, RTMPPacket *pkt);
165 
166 static int add_tracked_method(RTMPContext *rt, const char *name, int id)
167 {
168  int err;
169 
170  if (rt->nb_tracked_methods + 1 > rt->tracked_methods_size) {
171  rt->tracked_methods_size = (rt->nb_tracked_methods + 1) * 2;
172  if ((err = av_reallocp_array(&rt->tracked_methods, rt->tracked_methods_size,
173  sizeof(*rt->tracked_methods))) < 0) {
174  rt->nb_tracked_methods = 0;
175  rt->tracked_methods_size = 0;
176  return err;
177  }
178  }
179 
180  rt->tracked_methods[rt->nb_tracked_methods].name = av_strdup(name);
181  if (!rt->tracked_methods[rt->nb_tracked_methods].name)
182  return AVERROR(ENOMEM);
183  rt->tracked_methods[rt->nb_tracked_methods].id = id;
184  rt->nb_tracked_methods++;
185 
186  return 0;
187 }
188 
189 static void del_tracked_method(RTMPContext *rt, int index)
190 {
191  memmove(&rt->tracked_methods[index], &rt->tracked_methods[index + 1],
192  sizeof(*rt->tracked_methods) * (rt->nb_tracked_methods - index - 1));
193  rt->nb_tracked_methods--;
194 }
195 
196 static int find_tracked_method(URLContext *s, RTMPPacket *pkt, int offset,
197  char **tracked_method)
198 {
199  RTMPContext *rt = s->priv_data;
200  GetByteContext gbc;
201  double pkt_id;
202  int ret;
203  int i;
204 
205  bytestream2_init(&gbc, pkt->data + offset, pkt->size - offset);
206  if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0)
207  return ret;
208 
209  for (i = 0; i < rt->nb_tracked_methods; i++) {
210  if (rt->tracked_methods[i].id != pkt_id)
211  continue;
212 
213  *tracked_method = rt->tracked_methods[i].name;
214  del_tracked_method(rt, i);
215  break;
216  }
217 
218  return 0;
219 }
220 
221 static void free_tracked_methods(RTMPContext *rt)
222 {
223  int i;
224 
225  for (i = 0; i < rt->nb_tracked_methods; i ++)
226  av_freep(&rt->tracked_methods[i].name);
227  av_freep(&rt->tracked_methods);
228  rt->tracked_methods_size = 0;
229  rt->nb_tracked_methods = 0;
230 }
231 
232 static int rtmp_send_packet(RTMPContext *rt, RTMPPacket *pkt, int track)
233 {
234  int ret;
235 
236  if (pkt->type == RTMP_PT_INVOKE && track) {
237  GetByteContext gbc;
238  char name[128];
239  double pkt_id;
240  int len;
241 
242  bytestream2_init(&gbc, pkt->data, pkt->size);
243  if ((ret = ff_amf_read_string(&gbc, name, sizeof(name), &len)) < 0)
244  goto fail;
245 
246  if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0)
247  goto fail;
248 
249  if ((ret = add_tracked_method(rt, name, pkt_id)) < 0)
250  goto fail;
251  }
252 
253  ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size,
254  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
255 fail:
256  ff_rtmp_packet_destroy(pkt);
257  return ret;
258 }
259 
260 static int rtmp_write_amf_data(URLContext *s, char *param, uint8_t **p)
261 {
262  char *field, *value;
263  char type;
264 
265  /* The type must be B for Boolean, N for number, S for string, O for
266  * object, or Z for null. For Booleans the data must be either 0 or 1 for
267  * FALSE or TRUE, respectively. Likewise for Objects the data must be
268  * 0 or 1 to end or begin an object, respectively. Data items in subobjects
269  * may be named, by prefixing the type with 'N' and specifying the name
270  * before the value (ie. NB:myFlag:1). This option may be used multiple times
271  * to construct arbitrary AMF sequences. */
272  if (param[0] && param[1] == ':') {
273  type = param[0];
274  value = param + 2;
275  } else if (param[0] == 'N' && param[1] && param[2] == ':') {
276  type = param[1];
277  field = param + 3;
278  value = strchr(field, ':');
279  if (!value)
280  goto fail;
281  *value = '\0';
282  value++;
283 
284  ff_amf_write_field_name(p, field);
285  } else {
286  goto fail;
287  }
288 
289  switch (type) {
290  case 'B':
291  ff_amf_write_bool(p, value[0] != '0');
292  break;
293  case 'S':
294  ff_amf_write_string(p, value);
295  break;
296  case 'N':
297  ff_amf_write_number(p, strtod(value, NULL));
298  break;
299  case 'Z':
300  ff_amf_write_null(p);
301  break;
302  case 'O':
303  if (value[0] != '0')
304  ff_amf_write_object_start(p);
305  else
306  ff_amf_write_object_end(p);
307  break;
308  default:
309  goto fail;
310  break;
311  }
312 
313  return 0;
314 
315 fail:
316  av_log(s, AV_LOG_ERROR, "Invalid AMF parameter: %s\n", param);
317  return AVERROR(EINVAL);
318 }
319 
320 /**
321  * Generate 'connect' call and send it to the server.
322  */
323 static int gen_connect(URLContext *s, RTMPContext *rt)
324 {
325  RTMPPacket pkt;
326  uint8_t *p;
327  int ret;
328 
329  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
330  0, 4096 + APP_MAX_LENGTH)) < 0)
331  return ret;
332 
333  p = pkt.data;
334 
335  ff_amf_write_string(&p, "connect");
336  ff_amf_write_number(&p, ++rt->nb_invokes);
337  ff_amf_write_object_start(&p);
338  ff_amf_write_field_name(&p, "app");
339  ff_amf_write_string2(&p, rt->app, rt->auth_params);
340 
341  if (rt->enhanced_codecs) {
342  uint32_t list_len = 0;
343  char *fourcc_data = rt->enhanced_codecs;
344  int fourcc_str_len = strlen(fourcc_data);
345 
346  // check the string, fourcc + ',' + ... + end fourcc correct length should be (4+1)*n+4
347  if ((fourcc_str_len + 1) % 5 != 0) {
348  av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
349  "should be of the form hvc1[,av01][,vp09][,...]\n");
350  ff_rtmp_packet_destroy(&pkt);
351  return AVERROR(EINVAL);
352  }
353 
354  list_len = (fourcc_str_len + 1) / 5;
355  ff_amf_write_field_name(&p, "fourCcList");
356  ff_amf_write_array_start(&p, list_len);
357 
358  while(fourcc_data - rt->enhanced_codecs < fourcc_str_len) {
359  unsigned char fourcc[5];
360  if (!strncmp(fourcc_data, "ac-3", 4) ||
361  !strncmp(fourcc_data, "av01", 4) ||
362  !strncmp(fourcc_data, "avc1", 4) ||
363  !strncmp(fourcc_data, "ec-3", 4) ||
364  !strncmp(fourcc_data, "fLaC", 4) ||
365  !strncmp(fourcc_data, "hvc1", 4) ||
366  !strncmp(fourcc_data, ".mp3", 4) ||
367  !strncmp(fourcc_data, "mp4a", 4) ||
368  !strncmp(fourcc_data, "Opus", 4) ||
369  !strncmp(fourcc_data, "vp09", 4)) {
370  av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
371  ff_amf_write_string(&p, fourcc);
372  } else {
373  av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc, %.*s\n", 4, fourcc_data);
374  ff_rtmp_packet_destroy(&pkt);
375  return AVERROR_PATCHWELCOME;
376  }
377 
378  fourcc_data += 5;
379  }
380  }
381 
382  if (!rt->is_input) {
383  ff_amf_write_field_name(&p, "type");
384  ff_amf_write_string(&p, "nonprivate");
385  }
386  ff_amf_write_field_name(&p, "flashVer");
387  ff_amf_write_string(&p, rt->flashver);
388 
389  if (rt->swfurl || rt->swfverify) {
390  ff_amf_write_field_name(&p, "swfUrl");
391  if (rt->swfurl)
392  ff_amf_write_string(&p, rt->swfurl);
393  else
394  ff_amf_write_string(&p, rt->swfverify);
395  }
396 
397  ff_amf_write_field_name(&p, "tcUrl");
398  ff_amf_write_string2(&p, rt->tcurl, rt->auth_params);
399  if (rt->is_input) {
400  ff_amf_write_field_name(&p, "fpad");
401  ff_amf_write_bool(&p, 0);
402  ff_amf_write_field_name(&p, "capabilities");
403  ff_amf_write_number(&p, 15.0);
404 
405  /* Tell the server we support all the audio codecs except
406  * SUPPORT_SND_INTEL (0x0008) and SUPPORT_SND_UNUSED (0x0010)
407  * which are unused in the RTMP protocol implementation. */
408  ff_amf_write_field_name(&p, "audioCodecs");
409  ff_amf_write_number(&p, 4071.0);
410  ff_amf_write_field_name(&p, "videoCodecs");
411  ff_amf_write_number(&p, 252.0);
412  ff_amf_write_field_name(&p, "videoFunction");
413  ff_amf_write_number(&p, 1.0);
414 
415  if (rt->pageurl) {
416  ff_amf_write_field_name(&p, "pageUrl");
417  ff_amf_write_string(&p, rt->pageurl);
418  }
419  }
420  ff_amf_write_object_end(&p);
421 
422  if (rt->conn) {
423  char *param = rt->conn;
424 
425  // Write arbitrary AMF data to the Connect message.
426  while (param) {
427  char *sep;
428  param += strspn(param, " ");
429  if (!*param)
430  break;
431  sep = strchr(param, ' ');
432  if (sep)
433  *sep = '\0';
434  if ((ret = rtmp_write_amf_data(s, param, &p)) < 0) {
435  // Invalid AMF parameter.
436  ff_rtmp_packet_destroy(&pkt);
437  return ret;
438  }
439 
440  if (sep)
441  param = sep + 1;
442  else
443  break;
444  }
445  }
446 
447  pkt.size = p - pkt.data;
448 
449  return rtmp_send_packet(rt, &pkt, 1);
450 }
451 
452 
453 #define RTMP_CTRL_ABORT_MESSAGE (2)
454 
455 static int read_connect(URLContext *s, RTMPContext *rt)
456 {
457  RTMPPacket pkt = { 0 };
458  uint8_t *p;
459  const uint8_t *cp;
460  int ret;
461  char command[64];
462  int stringlen;
463  double seqnum;
464  uint8_t tmpstr[256];
465  GetByteContext gbc;
466 
467  // handle RTMP Protocol Control Messages
468  for (;;) {
469  if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size,
470  &rt->prev_pkt[0], &rt->nb_prev_pkt[0])) < 0)
471  return ret;
472 #ifdef DEBUG
473  ff_rtmp_packet_dump(s, &pkt);
474 #endif
475  if (pkt.type == RTMP_PT_CHUNK_SIZE) {
476  if ((ret = handle_chunk_size(s, &pkt)) < 0) {
477  ff_rtmp_packet_destroy(&pkt);
478  return ret;
479  }
480  } else if (pkt.type == RTMP_CTRL_ABORT_MESSAGE) {
481  av_log(s, AV_LOG_ERROR, "received abort message\n");
482  ff_rtmp_packet_destroy(&pkt);
483  return AVERROR_UNKNOWN;
484  } else if (pkt.type == RTMP_PT_BYTES_READ) {
485  av_log(s, AV_LOG_TRACE, "received acknowledgement\n");
486  } else if (pkt.type == RTMP_PT_WINDOW_ACK_SIZE) {
487  if ((ret = handle_window_ack_size(s, &pkt)) < 0) {
488  ff_rtmp_packet_destroy(&pkt);
489  return ret;
490  }
491  } else if (pkt.type == RTMP_PT_SET_PEER_BW) {
492  if ((ret = handle_set_peer_bw(s, &pkt)) < 0) {
493  ff_rtmp_packet_destroy(&pkt);
494  return ret;
495  }
496  } else if (pkt.type == RTMP_PT_INVOKE) {
497  // received RTMP Command Message
498  break;
499  } else {
500  av_log(s, AV_LOG_ERROR, "Unknown control message type (%d)\n", pkt.type);
501  }
502  ff_rtmp_packet_destroy(&pkt);
503  }
504 
505  cp = pkt.data;
506  bytestream2_init(&gbc, cp, pkt.size);
507  if (ff_amf_read_string(&gbc, command, sizeof(command), &stringlen)) {
508  av_log(s, AV_LOG_ERROR, "Unable to read command string\n");
509  ff_rtmp_packet_destroy(&pkt);
510  return AVERROR_INVALIDDATA;
511  }
512  if (strcmp(command, "connect")) {
513  av_log(s, AV_LOG_ERROR, "Expecting connect, got %s\n", command);
514  ff_rtmp_packet_destroy(&pkt);
515  return AVERROR_INVALIDDATA;
516  }
517  ret = ff_amf_read_number(&gbc, &seqnum);
518  if (ret)
519  av_log(s, AV_LOG_WARNING, "SeqNum not found\n");
520  /* Here one could parse an AMF Object with data as flashVers and others. */
521  ret = ff_amf_get_field_value(gbc.buffer,
522  gbc.buffer + bytestream2_get_bytes_left(&gbc),
523  "app", tmpstr, sizeof(tmpstr));
524  if (ret)
525  av_log(s, AV_LOG_WARNING, "App field not found in connect\n");
526  if (!ret && strcmp(tmpstr, rt->app))
527  av_log(s, AV_LOG_WARNING, "App field don't match up: %s <-> %s\n",
528  tmpstr, rt->app);
529  ff_rtmp_packet_destroy(&pkt);
530 
531  // Send Window Acknowledgement Size (as defined in specification)
532  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
533  RTMP_PT_WINDOW_ACK_SIZE, 0, 4)) < 0)
534  return ret;
535  p = pkt.data;
536  // Inform the peer about how often we want acknowledgements about what
537  // we send. (We don't check for the acknowledgements currently.)
538  bytestream_put_be32(&p, rt->max_sent_unacked);
539  pkt.size = p - pkt.data;
540  ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
541  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
542  ff_rtmp_packet_destroy(&pkt);
543  if (ret < 0)
544  return ret;
545  // Set Peer Bandwidth
546  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
547  RTMP_PT_SET_PEER_BW, 0, 5)) < 0)
548  return ret;
549  p = pkt.data;
550  // Tell the peer to only send this many bytes unless it gets acknowledgements.
551  // This could be any arbitrary value we want here.
552  bytestream_put_be32(&p, rt->max_sent_unacked);
553  bytestream_put_byte(&p, 2); // dynamic
554  pkt.size = p - pkt.data;
555  ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
556  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
557  ff_rtmp_packet_destroy(&pkt);
558  if (ret < 0)
559  return ret;
560 
561  // User control
562  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
563  RTMP_PT_USER_CONTROL, 0, 6)) < 0)
564  return ret;
565 
566  p = pkt.data;
567  bytestream_put_be16(&p, 0); // 0 -> Stream Begin
568  bytestream_put_be32(&p, 0); // Stream 0
569  ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
570  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
571  ff_rtmp_packet_destroy(&pkt);
572  if (ret < 0)
573  return ret;
574 
575  // Chunk size
576  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
577  RTMP_PT_CHUNK_SIZE, 0, 4)) < 0)
578  return ret;
579 
580  p = pkt.data;
581  bytestream_put_be32(&p, rt->out_chunk_size);
582  ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
583  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
584  ff_rtmp_packet_destroy(&pkt);
585  if (ret < 0)
586  return ret;
587 
588  // Send _result NetConnection.Connect.Success to connect
589  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
590  RTMP_PT_INVOKE, 0,
591  RTMP_PKTDATA_DEFAULT_SIZE)) < 0)
592  return ret;
593 
594  p = pkt.data;
595  ff_amf_write_string(&p, "_result");
596  ff_amf_write_number(&p, seqnum);
597 
598  ff_amf_write_object_start(&p);
599  ff_amf_write_field_name(&p, "fmsVer");
600  ff_amf_write_string(&p, "FMS/3,0,1,123");
601  ff_amf_write_field_name(&p, "capabilities");
602  ff_amf_write_number(&p, 31);
603  ff_amf_write_object_end(&p);
604 
605  ff_amf_write_object_start(&p);
606  ff_amf_write_field_name(&p, "level");
607  ff_amf_write_string(&p, "status");
608  ff_amf_write_field_name(&p, "code");
609  ff_amf_write_string(&p, "NetConnection.Connect.Success");
610  ff_amf_write_field_name(&p, "description");
611  ff_amf_write_string(&p, "Connection succeeded.");
612  ff_amf_write_field_name(&p, "objectEncoding");
613  ff_amf_write_number(&p, 0);
614  ff_amf_write_object_end(&p);
615 
616  pkt.size = p - pkt.data;
617  ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
618  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
619  ff_rtmp_packet_destroy(&pkt);
620  if (ret < 0)
621  return ret;
622 
623  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
624  RTMP_PT_INVOKE, 0, 30)) < 0)
625  return ret;
626  p = pkt.data;
627  ff_amf_write_string(&p, "onBWDone");
628  ff_amf_write_number(&p, 0);
629  ff_amf_write_null(&p);
630  ff_amf_write_number(&p, 8192);
631  pkt.size = p - pkt.data;
632  ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
633  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
634  ff_rtmp_packet_destroy(&pkt);
635 
636  return ret;
637 }
638 
639 /**
640  * Generate 'releaseStream' call and send it to the server. It should make
641  * the server release some channel for media streams.
642  */
643 static int gen_release_stream(URLContext *s, RTMPContext *rt)
644 {
645  RTMPPacket pkt;
646  uint8_t *p;
647  int ret;
648 
649  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
650  0, 29 + strlen(rt->playpath))) < 0)
651  return ret;
652 
653  av_log(s, AV_LOG_DEBUG, "Releasing stream...\n");
654  p = pkt.data;
655  ff_amf_write_string(&p, "releaseStream");
656  ff_amf_write_number(&p, ++rt->nb_invokes);
657  ff_amf_write_null(&p);
658  ff_amf_write_string(&p, rt->playpath);
659 
660  return rtmp_send_packet(rt, &pkt, 1);
661 }
662 
663 /**
664  * Generate 'FCPublish' call and send it to the server. It should make
665  * the server prepare for receiving media streams.
666  */
667 static int gen_fcpublish_stream(URLContext *s, RTMPContext *rt)
668 {
669  RTMPPacket pkt;
670  uint8_t *p;
671  int ret;
672 
673  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
674  0, 25 + strlen(rt->playpath))) < 0)
675  return ret;
676 
677  av_log(s, AV_LOG_DEBUG, "FCPublish stream...\n");
678  p = pkt.data;
679  ff_amf_write_string(&p, "FCPublish");
680  ff_amf_write_number(&p, ++rt->nb_invokes);
681  ff_amf_write_null(&p);
682  ff_amf_write_string(&p, rt->playpath);
683 
684  return rtmp_send_packet(rt, &pkt, 1);
685 }
686 
687 /**
688  * Generate 'FCUnpublish' call and send it to the server. It should make
689  * the server destroy stream.
690  */
691 static int gen_fcunpublish_stream(URLContext *s, RTMPContext *rt)
692 {
693  RTMPPacket pkt;
694  uint8_t *p;
695  int ret;
696 
697  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
698  0, 27 + strlen(rt->playpath))) < 0)
699  return ret;
700 
701  av_log(s, AV_LOG_DEBUG, "UnPublishing stream...\n");
702  p = pkt.data;
703  ff_amf_write_string(&p, "FCUnpublish");
704  ff_amf_write_number(&p, ++rt->nb_invokes);
705  ff_amf_write_null(&p);
706  ff_amf_write_string(&p, rt->playpath);
707 
708  return rtmp_send_packet(rt, &pkt, 0);
709 }
710 
711 /**
712  * Generate 'createStream' call and send it to the server. It should make
713  * the server allocate some channel for media streams.
714  */
715 static int gen_create_stream(URLContext *s, RTMPContext *rt)
716 {
717  RTMPPacket pkt;
718  uint8_t *p;
719  int ret;
720 
721  av_log(s, AV_LOG_DEBUG, "Creating stream...\n");
722 
723  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
724  0, 25)) < 0)
725  return ret;
726 
727  p = pkt.data;
728  ff_amf_write_string(&p, "createStream");
729  ff_amf_write_number(&p, ++rt->nb_invokes);
730  ff_amf_write_null(&p);
731 
732  return rtmp_send_packet(rt, &pkt, 1);
733 }
734 
735 
736 /**
737  * Generate 'deleteStream' call and send it to the server. It should make
738  * the server remove some channel for media streams.
739  */
740 static int gen_delete_stream(URLContext *s, RTMPContext *rt)
741 {
742  RTMPPacket pkt;
743  uint8_t *p;
744  int ret;
745 
746  av_log(s, AV_LOG_DEBUG, "Deleting stream...\n");
747 
748  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
749  0, 34)) < 0)
750  return ret;
751 
752  p = pkt.data;
753  ff_amf_write_string(&p, "deleteStream");
754  ff_amf_write_number(&p, ++rt->nb_invokes);
755  ff_amf_write_null(&p);
756  ff_amf_write_number(&p, rt->stream_id);
757 
758  return rtmp_send_packet(rt, &pkt, 0);
759 }
760 
761 /**
762  * Generate 'getStreamLength' call and send it to the server. If the server
763  * knows the duration of the selected stream, it will reply with the duration
764  * in seconds.
765  */
766 static int gen_get_stream_length(URLContext *s, RTMPContext *rt)
767 {
768  RTMPPacket pkt;
769  uint8_t *p;
770  int ret;
771 
772  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
773  0, 31 + strlen(rt->playpath))) < 0)
774  return ret;
775 
776  p = pkt.data;
777  ff_amf_write_string(&p, "getStreamLength");
778  ff_amf_write_number(&p, ++rt->nb_invokes);
779  ff_amf_write_null(&p);
780  ff_amf_write_string(&p, rt->playpath);
781 
782  return rtmp_send_packet(rt, &pkt, 1);
783 }
784 
785 /**
786  * Generate client buffer time and send it to the server.
787  */
788 static int gen_buffer_time(URLContext *s, RTMPContext *rt)
789 {
790  RTMPPacket pkt;
791  uint8_t *p;
792  int ret;
793 
794  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_USER_CONTROL,
795  1, 10)) < 0)
796  return ret;
797 
798  p = pkt.data;
799  bytestream_put_be16(&p, 3); // SetBuffer Length
800  bytestream_put_be32(&p, rt->stream_id);
801  bytestream_put_be32(&p, rt->client_buffer_time);
802 
803  return rtmp_send_packet(rt, &pkt, 0);
804 }
805 
806 /**
807  * Generate 'play' call and send it to the server, then ping the server
808  * to start actual playing.
809  */
810 static int gen_play(URLContext *s, RTMPContext *rt)
811 {
812  RTMPPacket pkt;
813  uint8_t *p;
814  int ret;
815 
816  av_log(s, AV_LOG_DEBUG, "Sending play command for '%s'\n", rt->playpath);
817 
818  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
819  0, 29 + strlen(rt->playpath))) < 0)
820  return ret;
821 
822  pkt.extra = rt->stream_id;
823 
824  p = pkt.data;
825  ff_amf_write_string(&p, "play");
826  ff_amf_write_number(&p, ++rt->nb_invokes);
827  ff_amf_write_null(&p);
828  ff_amf_write_string(&p, rt->playpath);
829  ff_amf_write_number(&p, rt->live * 1000);
830 
831  return rtmp_send_packet(rt, &pkt, 1);
832 }
833 
834 static int gen_seek(URLContext *s, RTMPContext *rt, int64_t timestamp)
835 {
836  RTMPPacket pkt;
837  uint8_t *p;
838  int ret;
839 
840  av_log(s, AV_LOG_DEBUG, "Sending seek command for timestamp %"PRId64"\n",
841  timestamp);
842 
843  if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 26)) < 0)
844  return ret;
845 
846  pkt.extra = rt->stream_id;
847 
848  p = pkt.data;
849  ff_amf_write_string(&p, "seek");
850  ff_amf_write_number(&p, 0); //no tracking back responses
851  ff_amf_write_null(&p); //as usual, the first null param
852  ff_amf_write_number(&p, timestamp); //where we want to jump
853 
854  return rtmp_send_packet(rt, &pkt, 1);
855 }
856 
857 /**
858  * Generate a pause packet that either pauses or unpauses the current stream.
859  */
860 static int gen_pause(URLContext *s, RTMPContext *rt, int pause, uint32_t timestamp)
861 {
862  RTMPPacket pkt;
863  uint8_t *p;
864  int ret;
865 
866  av_log(s, AV_LOG_DEBUG, "Sending pause command for timestamp %d\n",
867  timestamp);
868 
869  if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 29)) < 0)
870  return ret;
871 
872  pkt.extra = rt->stream_id;
873 
874  p = pkt.data;
875  ff_amf_write_string(&p, "pause");
876  ff_amf_write_number(&p, 0); //no tracking back responses
877  ff_amf_write_null(&p); //as usual, the first null param
878  ff_amf_write_bool(&p, pause); // pause or unpause
879  ff_amf_write_number(&p, timestamp); //where we pause the stream
880 
881  return rtmp_send_packet(rt, &pkt, 1);
882 }
883 
884 /**
885  * Generate 'publish' call and send it to the server.
886  */
887 static int gen_publish(URLContext *s, RTMPContext *rt)
888 {
889  RTMPPacket pkt;
890  uint8_t *p;
891  int ret;
892 
893  av_log(s, AV_LOG_DEBUG, "Sending publish command for '%s'\n", rt->playpath);
894 
895  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
896  0, 30 + strlen(rt->playpath))) < 0)
897  return ret;
898 
899  pkt.extra = rt->stream_id;
900 
901  p = pkt.data;
902  ff_amf_write_string(&p, "publish");
903  ff_amf_write_number(&p, ++rt->nb_invokes);
904  ff_amf_write_null(&p);
905  ff_amf_write_string(&p, rt->playpath);
906  ff_amf_write_string(&p, "live");
907 
908  return rtmp_send_packet(rt, &pkt, 1);
909 }
910 
911 /**
912  * Generate ping reply and send it to the server.
913  */
914 static int gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt)
915 {
916  RTMPPacket pkt;
917  uint8_t *p;
918  int ret;
919 
920  if (ppkt->size < 6) {
921  av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n",
922  ppkt->size);
923  return AVERROR_INVALIDDATA;
924  }
925 
926  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,RTMP_PT_USER_CONTROL,
927  ppkt->timestamp + 1, 6)) < 0)
928  return ret;
929 
930  p = pkt.data;
931  bytestream_put_be16(&p, 7); // PingResponse
932  bytestream_put_be32(&p, AV_RB32(ppkt->data+2));
933 
934  return rtmp_send_packet(rt, &pkt, 0);
935 }
936 
937 /**
938  * Generate SWF verification message and send it to the server.
939  */
940 static int gen_swf_verification(URLContext *s, RTMPContext *rt)
941 {
942  RTMPPacket pkt;
943  uint8_t *p;
944  int ret;
945 
946  av_log(s, AV_LOG_DEBUG, "Sending SWF verification...\n");
947  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_USER_CONTROL,
948  0, 44)) < 0)
949  return ret;
950 
951  p = pkt.data;
952  bytestream_put_be16(&p, 27);
953  memcpy(p, rt->swfverification, 42);
954 
955  return rtmp_send_packet(rt, &pkt, 0);
956 }
957 
958 /**
959  * Generate window acknowledgement size message and send it to the server.
960  */
961 static int gen_window_ack_size(URLContext *s, RTMPContext *rt)
962 {
963  RTMPPacket pkt;
964  uint8_t *p;
965  int ret;
966 
967  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_WINDOW_ACK_SIZE,
968  0, 4)) < 0)
969  return ret;
970 
971  p = pkt.data;
972  bytestream_put_be32(&p, rt->max_sent_unacked);
973 
974  return rtmp_send_packet(rt, &pkt, 0);
975 }
976 
977 /**
978  * Generate check bandwidth message and send it to the server.
979  */
980 static int gen_check_bw(URLContext *s, RTMPContext *rt)
981 {
982  RTMPPacket pkt;
983  uint8_t *p;
984  int ret;
985 
986  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
987  0, 21)) < 0)
988  return ret;
989 
990  p = pkt.data;
991  ff_amf_write_string(&p, "_checkbw");
992  ff_amf_write_number(&p, ++rt->nb_invokes);
993  ff_amf_write_null(&p);
994 
995  return rtmp_send_packet(rt, &pkt, 1);
996 }
997 
998 /**
999  * Generate report on bytes read so far and send it to the server.
1000  */
1001 static int gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts)
1002 {
1003  RTMPPacket pkt;
1004  uint8_t *p;
1005  int ret;
1006 
1007  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ,
1008  ts, 4)) < 0)
1009  return ret;
1010 
1011  p = pkt.data;
1012  bytestream_put_be32(&p, rt->bytes_read);
1013 
1014  return rtmp_send_packet(rt, &pkt, 0);
1015 }
1016 
1017 static int gen_fcsubscribe_stream(URLContext *s, RTMPContext *rt,
1018  const char *subscribe)
1019 {
1020  RTMPPacket pkt;
1021  uint8_t *p;
1022  int ret;
1023 
1024  if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
1025  0, 27 + strlen(subscribe))) < 0)
1026  return ret;
1027 
1028  p = pkt.data;
1029  ff_amf_write_string(&p, "FCSubscribe");
1030  ff_amf_write_number(&p, ++rt->nb_invokes);
1031  ff_amf_write_null(&p);
1032  ff_amf_write_string(&p, subscribe);
1033 
1034  return rtmp_send_packet(rt, &pkt, 1);
1035 }
1036 
1037 /**
1038  * Put HMAC-SHA2 digest of packet data (except for the bytes where this digest
1039  * will be stored) into that packet.
1040  *
1041  * @param buf handshake data (1536 bytes)
1042  * @param encrypted use an encrypted connection (RTMPE)
1043  * @return offset to the digest inside input data
1044  */
1045 static int rtmp_handshake_imprint_with_digest(uint8_t *buf, int encrypted)
1046 {
1047  int ret, digest_pos;
1048 
1049  if (encrypted)
1050  digest_pos = ff_rtmp_calc_digest_pos(buf, 772, 728, 776);
1051  else
1052  digest_pos = ff_rtmp_calc_digest_pos(buf, 8, 728, 12);
1053 
1054  ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
1055  rtmp_player_key, PLAYER_KEY_OPEN_PART_LEN,
1056  buf + digest_pos);
1057  if (ret < 0)
1058  return ret;
1059 
1060  return digest_pos;
1061 }
1062 
1063 /**
1064  * Verify that the received server response has the expected digest value.
1065  *
1066  * @param buf handshake data received from the server (1536 bytes)
1067  * @param off position to search digest offset from
1068  * @return 0 if digest is valid, digest position otherwise
1069  */
1070 static int rtmp_validate_digest(uint8_t *buf, int off)
1071 {
1072  uint8_t digest[32];
1073  int ret, digest_pos;
1074 
1075  digest_pos = ff_rtmp_calc_digest_pos(buf, off, 728, off + 4);
1076 
1077  ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
1078  rtmp_server_key, SERVER_KEY_OPEN_PART_LEN,
1079  digest);
1080  if (ret < 0)
1081  return ret;
1082 
1083  if (!memcmp(digest, buf + digest_pos, 32))
1084  return digest_pos;
1085  return 0;
1086 }
1087 
1088 static int rtmp_calc_swf_verification(URLContext *s, RTMPContext *rt,
1089  uint8_t *buf)
1090 {
1091  uint8_t *p;
1092  int ret;
1093 
1094  if (rt->swfhash_len != 32) {
1095  av_log(s, AV_LOG_ERROR,
1096  "Hash of the decompressed SWF file is not 32 bytes long.\n");
1097  return AVERROR(EINVAL);
1098  }
1099 
1100  p = &rt->swfverification[0];
1101  bytestream_put_byte(&p, 1);
1102  bytestream_put_byte(&p, 1);
1103  bytestream_put_be32(&p, rt->swfsize);
1104  bytestream_put_be32(&p, rt->swfsize);
1105 
1106  if ((ret = ff_rtmp_calc_digest(rt->swfhash, 32, 0, buf, 32, p)) < 0)
1107  return ret;
1108 
1109  return 0;
1110 }
1111 
1112 #if CONFIG_ZLIB
1113 static int rtmp_uncompress_swfplayer(uint8_t *in_data, int64_t in_size,
1114  uint8_t **out_data, int64_t *out_size)
1115 {
1116  z_stream zs = { 0 };
1117  void *ptr;
1118  int size;
1119  int ret = 0;
1120 
1121  zs.avail_in = in_size;
1122  zs.next_in = in_data;
1123  ret = inflateInit(&zs);
1124  if (ret != Z_OK)
1125  return AVERROR_UNKNOWN;
1126 
1127  do {
1128  uint8_t tmp_buf[16384];
1129 
1130  zs.avail_out = sizeof(tmp_buf);
1131  zs.next_out = tmp_buf;
1132 
1133  ret = inflate(&zs, Z_NO_FLUSH);
1134  if (ret != Z_OK && ret != Z_STREAM_END) {
1135  ret = AVERROR_UNKNOWN;
1136  goto fail;
1137  }
1138 
1139  size = sizeof(tmp_buf) - zs.avail_out;
1140  if (!(ptr = av_realloc(*out_data, *out_size + size))) {
1141  ret = AVERROR(ENOMEM);
1142  goto fail;
1143  }
1144  *out_data = ptr;
1145 
1146  memcpy(*out_data + *out_size, tmp_buf, size);
1147  *out_size += size;
1148  } while (zs.avail_out == 0);
1149 
1150 fail:
1151  inflateEnd(&zs);
1152  return ret;
1153 }
1154 #endif
1155 
1156 static int rtmp_calc_swfhash(URLContext *s)
1157 {
1158  RTMPContext *rt = s->priv_data;
1159  uint8_t *in_data = NULL, *out_data = NULL, *swfdata;
1160  int64_t in_size;
1161  URLContext *stream = NULL;
1162  char swfhash[32];
1163  int swfsize;
1164  int ret = 0;
1165 
1166  /* Get the SWF player file. */
1167  if ((ret = ffurl_open_whitelist(&stream, rt->swfverify, AVIO_FLAG_READ,
1168  &s->interrupt_callback, NULL,
1169  s->protocol_whitelist, s->protocol_blacklist, s)) < 0) {
1170  av_log(s, AV_LOG_ERROR, "Cannot open connection %s.\n", rt->swfverify);
1171  goto fail;
1172  }
1173 
1174  if ((in_size = ffurl_seek(stream, 0, AVSEEK_SIZE)) < 0) {
1175  ret = AVERROR(EIO);
1176  goto fail;
1177  }
1178 
1179  if (!(in_data = av_malloc(in_size))) {
1180  ret = AVERROR(ENOMEM);
1181  goto fail;
1182  }
1183 
1184  if ((ret = ffurl_read_complete(stream, in_data, in_size)) < 0)
1185  goto fail;
1186 
1187  if (in_size < 3) {
1188  ret = AVERROR_INVALIDDATA;
1189  goto fail;
1190  }
1191 
1192  if (!memcmp(in_data, "CWS", 3)) {
1193 #if CONFIG_ZLIB
1194  int64_t out_size;
1195  /* Decompress the SWF player file using Zlib. */
1196  if (!(out_data = av_malloc(8))) {
1197  ret = AVERROR(ENOMEM);
1198  goto fail;
1199  }
1200  *in_data = 'F'; // magic stuff
1201  memcpy(out_data, in_data, 8);
1202  out_size = 8;
1203 
1204  if ((ret = rtmp_uncompress_swfplayer(in_data + 8, in_size - 8,
1205  &out_data, &out_size)) < 0)
1206  goto fail;
1207  swfsize = out_size;
1208  swfdata = out_data;
1209 #else
1210  av_log(s, AV_LOG_ERROR,
1211  "Zlib is required for decompressing the SWF player file.\n");
1212  ret = AVERROR(EINVAL);
1213  goto fail;
1214 #endif
1215  } else {
1216  swfsize = in_size;
1217  swfdata = in_data;
1218  }
1219 
1220  /* Compute the SHA256 hash of the SWF player file. */
1221  if ((ret = ff_rtmp_calc_digest(swfdata, swfsize, 0,
1222  "Genuine Adobe Flash Player 001", 30,
1223  swfhash)) < 0)
1224  goto fail;
1225 
1226  /* Set SWFVerification parameters. */
1227  av_opt_set_bin(rt, "rtmp_swfhash", swfhash, 32, 0);
1228  rt->swfsize = swfsize;
1229 
1230 fail:
1231  av_freep(&in_data);
1232  av_freep(&out_data);
1233  ffurl_close(stream);
1234  return ret;
1235 }
1236 
1237 /**
1238  * Perform handshake with the server by means of exchanging pseudorandom data
1239  * signed with HMAC-SHA2 digest.
1240  *
1241  * @return 0 if handshake succeeds, negative value otherwise
1242  */
1243 static int rtmp_handshake(URLContext *s, RTMPContext *rt)
1244 {
1245  AVLFG rnd;
1246  uint8_t tosend [RTMP_HANDSHAKE_PACKET_SIZE+1] = {
1247  3, // unencrypted data
1248  0, 0, 0, 0, // client uptime
1249  RTMP_CLIENT_VER1,
1250  RTMP_CLIENT_VER2,
1251  RTMP_CLIENT_VER3,
1252  RTMP_CLIENT_VER4,
1253  };
1254  uint8_t clientdata[RTMP_HANDSHAKE_PACKET_SIZE];
1255  uint8_t serverdata[RTMP_HANDSHAKE_PACKET_SIZE+1];
1256  int i;
1257  int server_pos, client_pos;
1258  uint8_t digest[32], signature[32];
1259  int ret, type = 0;
1260 
1261  av_log(s, AV_LOG_DEBUG, "Handshaking...\n");
1262 
1263  av_lfg_init(&rnd, 0xDEADC0DE);
1264  // generate handshake packet - 1536 bytes of pseudorandom data
1265  for (i = 9; i <= RTMP_HANDSHAKE_PACKET_SIZE; i++)
1266  tosend[i] = av_lfg_get(&rnd) >> 24;
1267 
1268  if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) {
1269  /* When the client wants to use RTMPE, we have to change the command
1270  * byte to 0x06 which means to use encrypted data and we have to set
1271  * the flash version to at least 9.0.115.0. */
1272  tosend[0] = 6;
1273  tosend[5] = 128;
1274  tosend[6] = 0;
1275  tosend[7] = 3;
1276  tosend[8] = 2;
1277 
1278  /* Initialize the Diffie-Hellmann context and generate the public key
1279  * to send to the server. */
1280  if ((ret = ff_rtmpe_gen_pub_key(rt->stream, tosend + 1)) < 0)
1281  return ret;
1282  }
1283 
1284  client_pos = rtmp_handshake_imprint_with_digest(tosend + 1, rt->encrypted);
1285  if (client_pos < 0)
1286  return client_pos;
1287 
1288  if ((ret = ffurl_write(rt->stream, tosend,
1289  RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) {
1290  av_log(s, AV_LOG_ERROR, "Cannot write RTMP handshake request\n");
1291  return ret;
1292  }
1293 
1294  if ((ret = ffurl_read_complete(rt->stream, serverdata,
1295  RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) {
1296  av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
1297  return ret;
1298  }
1299 
1300  if ((ret = ffurl_read_complete(rt->stream, clientdata,
1301  RTMP_HANDSHAKE_PACKET_SIZE)) < 0) {
1302  av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
1303  return ret;
1304  }
1305 
1306  av_log(s, AV_LOG_DEBUG, "Type answer %d\n", serverdata[0]);
1307  av_log(s, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n",
1308  serverdata[5], serverdata[6], serverdata[7], serverdata[8]);
1309 
1310  if (rt->is_input && serverdata[5] >= 3) {
1311  server_pos = rtmp_validate_digest(serverdata + 1, 772);
1312  if (server_pos < 0)
1313  return server_pos;
1314 
1315  if (!server_pos) {
1316  type = 1;
1317  server_pos = rtmp_validate_digest(serverdata + 1, 8);
1318  if (server_pos < 0)
1319  return server_pos;
1320 
1321  if (!server_pos) {
1322  av_log(s, AV_LOG_ERROR, "Server response validating failed\n");
1323  return AVERROR(EIO);
1324  }
1325  }
1326 
1327  /* Generate SWFVerification token (SHA256 HMAC hash of decompressed SWF,
1328  * key are the last 32 bytes of the server handshake. */
1329  if (rt->swfsize) {
1330  if ((ret = rtmp_calc_swf_verification(s, rt, serverdata + 1 +
1331  RTMP_HANDSHAKE_PACKET_SIZE - 32)) < 0)
1332  return ret;
1333  }
1334 
1335  ret = ff_rtmp_calc_digest(tosend + 1 + client_pos, 32, 0,
1336  rtmp_server_key, sizeof(rtmp_server_key),
1337  digest);
1338  if (ret < 0)
1339  return ret;
1340 
1341  ret = ff_rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE - 32,
1342  0, digest, 32, signature);
1343  if (ret < 0)
1344  return ret;
1345 
1346  if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) {
1347  /* Compute the shared secret key sent by the server and initialize
1348  * the RC4 encryption. */
1349  if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1,
1350  tosend + 1, type)) < 0)
1351  return ret;
1352 
1353  /* Encrypt the signature received by the server. */
1354  ff_rtmpe_encrypt_sig(rt->stream, signature, digest, serverdata[0]);
1355  }
1356 
1357  if (memcmp(signature, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) {
1358  av_log(s, AV_LOG_ERROR, "Signature mismatch\n");
1359  return AVERROR(EIO);
1360  }
1361 
1362  for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++)
1363  tosend[i] = av_lfg_get(&rnd) >> 24;
1364  ret = ff_rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0,
1365  rtmp_player_key, sizeof(rtmp_player_key),
1366  digest);
1367  if (ret < 0)
1368  return ret;
1369 
1370  ret = ff_rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0,
1371  digest, 32,
1372  tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32);
1373  if (ret < 0)
1374  return ret;
1375 
1376  if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) {
1377  /* Encrypt the signature to be send to the server. */
1378  ff_rtmpe_encrypt_sig(rt->stream, tosend +
1379  RTMP_HANDSHAKE_PACKET_SIZE - 32, digest,
1380  serverdata[0]);
1381  }
1382 
1383  // write reply back to the server
1384  if ((ret = ffurl_write(rt->stream, tosend,
1385  RTMP_HANDSHAKE_PACKET_SIZE)) < 0)
1386  return ret;
1387 
1388  if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) {
1389  /* Set RC4 keys for encryption and update the keystreams. */
1390  if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0)
1391  return ret;
1392  }
1393  } else {
1394  if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) {
1395  /* Compute the shared secret key sent by the server and initialize
1396  * the RC4 encryption. */
1397  if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1,
1398  tosend + 1, 1)) < 0)
1399  return ret;
1400 
1401  if (serverdata[0] == 9) {
1402  /* Encrypt the signature received by the server. */
1403  ff_rtmpe_encrypt_sig(rt->stream, signature, digest,
1404  serverdata[0]);
1405  }
1406  }
1407 
1408  if ((ret = ffurl_write(rt->stream, serverdata + 1,
1409  RTMP_HANDSHAKE_PACKET_SIZE)) < 0)
1410  return ret;
1411 
1412  if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) {
1413  /* Set RC4 keys for encryption and update the keystreams. */
1414  if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0)
1415  return ret;
1416  }
1417  }
1418 
1419  return 0;
1420 }
1421 
1422 static int rtmp_receive_hs_packet(RTMPContext* rt, uint32_t *first_int,
1423  uint32_t *second_int, char *arraydata,
1424  int size)
1425 {
1426  int inoutsize;
1427 
1428  inoutsize = ffurl_read_complete(rt->stream, arraydata,
1429  RTMP_HANDSHAKE_PACKET_SIZE);
1430  if (inoutsize <= 0)
1431  return AVERROR(EIO);
1432  if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) {
1433  av_log(rt, AV_LOG_ERROR, "Erroneous Message size %d"
1434  " not following standard\n", (int)inoutsize);
1435  return AVERROR(EINVAL);
1436  }
1437 
1438  *first_int = AV_RB32(arraydata);
1439  *second_int = AV_RB32(arraydata + 4);
1440  return 0;
1441 }
1442 
1443 static int rtmp_send_hs_packet(RTMPContext* rt, uint32_t first_int,
1444  uint32_t second_int, char *arraydata, int size)
1445 {
1446  int inoutsize;
1447 
1448  AV_WB32(arraydata, first_int);
1449  AV_WB32(arraydata + 4, second_int);
1450  inoutsize = ffurl_write(rt->stream, arraydata,
1451  RTMP_HANDSHAKE_PACKET_SIZE);
1452  if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) {
1453  av_log(rt, AV_LOG_ERROR, "Unable to write answer\n");
1454  return AVERROR(EIO);
1455  }
1456 
1457  return 0;
1458 }
1459 
1460 /**
1461  * rtmp handshake server side
1462  */
1463 static int rtmp_server_handshake(URLContext *s, RTMPContext *rt)
1464 {
1465  uint8_t buffer[RTMP_HANDSHAKE_PACKET_SIZE];
1466  uint32_t hs_epoch;
1467  uint32_t hs_my_epoch;
1468  uint8_t hs_c1[RTMP_HANDSHAKE_PACKET_SIZE];
1469  uint8_t hs_s1[RTMP_HANDSHAKE_PACKET_SIZE];
1470  uint32_t zeroes;
1471  uint32_t temp = 0;
1472  int randomidx = 0;
1473  int inoutsize = 0;
1474  int ret;
1475 
1476  inoutsize = ffurl_read_complete(rt->stream, buffer, 1); // Receive C0
1477  if (inoutsize <= 0) {
1478  av_log(s, AV_LOG_ERROR, "Unable to read handshake\n");
1479  return AVERROR(EIO);
1480  }
1481  // Check Version
1482  if (buffer[0] != 3) {
1483  av_log(s, AV_LOG_ERROR, "RTMP protocol version mismatch\n");
1484  return AVERROR(EIO);
1485  }
1486  if (ffurl_write(rt->stream, buffer, 1) <= 0) { // Send S0
1487  av_log(s, AV_LOG_ERROR,
1488  "Unable to write answer - RTMP S0\n");
1489  return AVERROR(EIO);
1490  }
1491  /* Receive C1 */
1492  ret = rtmp_receive_hs_packet(rt, &hs_epoch, &zeroes, hs_c1,
1493  RTMP_HANDSHAKE_PACKET_SIZE);
1494  if (ret) {
1495  av_log(s, AV_LOG_ERROR, "RTMP Handshake C1 Error\n");
1496  return ret;
1497  }
1498  /* Send S1 */
1499  /* By now same epoch will be sent */
1500  hs_my_epoch = hs_epoch;
1501  /* Generate random */
1502  for (randomidx = 8; randomidx < (RTMP_HANDSHAKE_PACKET_SIZE);
1503  randomidx += 4)
1504  AV_WB32(hs_s1 + randomidx, av_get_random_seed());
1505 
1506  ret = rtmp_send_hs_packet(rt, hs_my_epoch, 0, hs_s1,
1507  RTMP_HANDSHAKE_PACKET_SIZE);
1508  if (ret) {
1509  av_log(s, AV_LOG_ERROR, "RTMP Handshake S1 Error\n");
1510  return ret;
1511  }
1512  /* Send S2 */
1513  ret = rtmp_send_hs_packet(rt, hs_epoch, 0, hs_c1,
1514  RTMP_HANDSHAKE_PACKET_SIZE);
1515  if (ret) {
1516  av_log(s, AV_LOG_ERROR, "RTMP Handshake S2 Error\n");
1517  return ret;
1518  }
1519  /* Receive C2 */
1520  ret = rtmp_receive_hs_packet(rt, &temp, &zeroes, buffer,
1521  RTMP_HANDSHAKE_PACKET_SIZE);
1522  if (ret) {
1523  av_log(s, AV_LOG_ERROR, "RTMP Handshake C2 Error\n");
1524  return ret;
1525  }
1526  if (temp != hs_my_epoch)
1527  av_log(s, AV_LOG_WARNING,
1528  "Erroneous C2 Message epoch does not match up with C1 epoch\n");
1529  if (memcmp(buffer + 8, hs_s1 + 8,
1530  RTMP_HANDSHAKE_PACKET_SIZE - 8))
1531  av_log(s, AV_LOG_WARNING,
1532  "Erroneous C2 Message random does not match up\n");
1533 
1534  return 0;
1535 }
1536 
1537 static int handle_chunk_size(URLContext *s, RTMPPacket *pkt)
1538 {
1539  RTMPContext *rt = s->priv_data;
1540  int ret;
1541 
1542  if (pkt->size < 4) {
1543  av_log(s, AV_LOG_ERROR,
1544  "Too short chunk size change packet (%d)\n",
1545  pkt->size);
1546  return AVERROR_INVALIDDATA;
1547  }
1548 
1549  if (!rt->is_input) {
1550  /* Send the same chunk size change packet back to the server,
1551  * setting the outgoing chunk size to the same as the incoming one. */
1552  if ((ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size,
1553  &rt->prev_pkt[1], &rt->nb_prev_pkt[1])) < 0)
1554  return ret;
1555  rt->out_chunk_size = AV_RB32(pkt->data);
1556  }
1557 
1558  rt->in_chunk_size = AV_RB32(pkt->data);
1559  if (rt->in_chunk_size <= 0) {
1560  av_log(s, AV_LOG_ERROR, "Incorrect chunk size %d\n",
1561  rt->in_chunk_size);
1562  return AVERROR_INVALIDDATA;
1563  }
1564  av_log(s, AV_LOG_DEBUG, "New incoming chunk size = %d\n",
1565  rt->in_chunk_size);
1566 
1567  return 0;
1568 }
1569 
1570 static int handle_user_control(URLContext *s, RTMPPacket *pkt)
1571 {
1572  RTMPContext *rt = s->priv_data;
1573  int t, ret;
1574 
1575  if (pkt->size < 2) {
1576  av_log(s, AV_LOG_ERROR, "Too short user control packet (%d)\n",
1577  pkt->size);
1578  return AVERROR_INVALIDDATA;
1579  }
1580 
1581  t = AV_RB16(pkt->data);
1582  if (t == 6) { // PingRequest
1583  if ((ret = gen_pong(s, rt, pkt)) < 0)
1584  return ret;
1585  } else if (t == 26) {
1586  if (rt->swfsize) {
1587  if ((ret = gen_swf_verification(s, rt)) < 0)
1588  return ret;
1589  } else {
1590  av_log(s, AV_LOG_WARNING, "Ignoring SWFVerification request.\n");
1591  }
1592  }
1593 
1594  return 0;
1595 }
1596 
1597 static int handle_set_peer_bw(URLContext *s, RTMPPacket *pkt)
1598 {
1599  RTMPContext *rt = s->priv_data;
1600 
1601  if (pkt->size < 4) {
1602  av_log(s, AV_LOG_ERROR,
1603  "Peer bandwidth packet is less than 4 bytes long (%d)\n",
1604  pkt->size);
1605  return AVERROR_INVALIDDATA;
1606  }
1607 
1608  // We currently don't check how much the peer has acknowledged of
1609  // what we have sent. To do that properly, we should call
1610  // gen_window_ack_size here, to tell the peer that we want an
1611  // acknowledgement with (at least) that interval.
1612  rt->max_sent_unacked = AV_RB32(pkt->data);
1613  if (rt->max_sent_unacked <= 0) {
1614  av_log(s, AV_LOG_ERROR, "Incorrect set peer bandwidth %d\n",
1615  rt->max_sent_unacked);
1616  return AVERROR_INVALIDDATA;
1617 
1618  }
1619  av_log(s, AV_LOG_DEBUG, "Max sent, unacked = %d\n", rt->max_sent_unacked);
1620 
1621  return 0;
1622 }
1623 
1624 static int handle_window_ack_size(URLContext *s, RTMPPacket *pkt)
1625 {
1626  RTMPContext *rt = s->priv_data;
1627 
1628  if (pkt->size < 4) {
1629  av_log(s, AV_LOG_ERROR,
1630  "Too short window acknowledgement size packet (%d)\n",
1631  pkt->size);
1632  return AVERROR_INVALIDDATA;
1633  }
1634 
1635  rt->receive_report_size = AV_RB32(pkt->data);
1636  if (rt->receive_report_size <= 0) {
1637  av_log(s, AV_LOG_ERROR, "Incorrect window acknowledgement size %d\n",
1638  rt->receive_report_size);
1639  return AVERROR_INVALIDDATA;
1640  }
1641  av_log(s, AV_LOG_DEBUG, "Window acknowledgement size = %d\n", rt->receive_report_size);
1642  // Send an Acknowledgement packet after receiving half the maximum
1643  // size, to make sure the peer can keep on sending without waiting
1644  // for acknowledgements.
1645  rt->receive_report_size >>= 1;
1646 
1647  return 0;
1648 }
1649 
1650 static int do_adobe_auth(RTMPContext *rt, const char *user, const char *salt,
1651  const char *opaque, const char *challenge)
1652 {
1653  uint8_t hash[16];
1654  char hashstr[AV_BASE64_SIZE(sizeof(hash))], challenge2[10];
1655  struct AVMD5 *md5 = av_md5_alloc();
1656  if (!md5)
1657  return AVERROR(ENOMEM);
1658 
1659  snprintf(challenge2, sizeof(challenge2), "%08x", av_get_random_seed());
1660 
1661  av_md5_init(md5);
1662  av_md5_update(md5, user, strlen(user));
1663  av_md5_update(md5, salt, strlen(salt));
1664  av_md5_update(md5, rt->password, strlen(rt->password));
1665  av_md5_final(md5, hash);
1666  av_base64_encode(hashstr, sizeof(hashstr), hash,
1667  sizeof(hash));
1668  av_md5_init(md5);
1669  av_md5_update(md5, hashstr, strlen(hashstr));
1670  if (opaque)
1671  av_md5_update(md5, opaque, strlen(opaque));
1672  else if (challenge)
1673  av_md5_update(md5, challenge, strlen(challenge));
1674  av_md5_update(md5, challenge2, strlen(challenge2));
1675  av_md5_final(md5, hash);
1676  av_base64_encode(hashstr, sizeof(hashstr), hash,
1677  sizeof(hash));
1678  snprintf(rt->auth_params, sizeof(rt->auth_params),
1679  "?authmod=%s&user=%s&challenge=%s&response=%s",
1680  "adobe", user, challenge2, hashstr);
1681  if (opaque)
1682  av_strlcatf(rt->auth_params, sizeof(rt->auth_params),
1683  "&opaque=%s", opaque);
1684 
1685  av_free(md5);
1686  return 0;
1687 }
1688 
1689 static int do_llnw_auth(RTMPContext *rt, const char *user, const char *nonce)
1690 {
1691  uint8_t hash[16];
1692  char hashstr1[33], hashstr2[33];
1693  const char *realm = "live";
1694  const char *method = "publish";
1695  const char *qop = "auth";
1696  const char *nc = "00000001";
1697  char cnonce[10];
1698  struct AVMD5 *md5 = av_md5_alloc();
1699  if (!md5)
1700  return AVERROR(ENOMEM);
1701 
1702  snprintf(cnonce, sizeof(cnonce), "%08x", av_get_random_seed());
1703 
1704  av_md5_init(md5);
1705  av_md5_update(md5, user, strlen(user));
1706  av_md5_update(md5, ":", 1);
1707  av_md5_update(md5, realm, strlen(realm));
1708  av_md5_update(md5, ":", 1);
1709  av_md5_update(md5, rt->password, strlen(rt->password));
1710  av_md5_final(md5, hash);
1711  ff_data_to_hex(hashstr1, hash, 16, 1);
1712 
1713  av_md5_init(md5);
1714  av_md5_update(md5, method, strlen(method));
1715  av_md5_update(md5, ":/", 2);
1716  av_md5_update(md5, rt->app, strlen(rt->app));
1717  if (!strchr(rt->app, '/'))
1718  av_md5_update(md5, "/_definst_", strlen("/_definst_"));
1719  av_md5_final(md5, hash);
1720  ff_data_to_hex(hashstr2, hash, 16, 1);
1721 
1722  av_md5_init(md5);
1723  av_md5_update(md5, hashstr1, strlen(hashstr1));
1724  av_md5_update(md5, ":", 1);
1725  if (nonce)
1726  av_md5_update(md5, nonce, strlen(nonce));
1727  av_md5_update(md5, ":", 1);
1728  av_md5_update(md5, nc, strlen(nc));
1729  av_md5_update(md5, ":", 1);
1730  av_md5_update(md5, cnonce, strlen(cnonce));
1731  av_md5_update(md5, ":", 1);
1732  av_md5_update(md5, qop, strlen(qop));
1733  av_md5_update(md5, ":", 1);
1734  av_md5_update(md5, hashstr2, strlen(hashstr2));
1735  av_md5_final(md5, hash);
1736  ff_data_to_hex(hashstr1, hash, 16, 1);
1737 
1738  snprintf(rt->auth_params, sizeof(rt->auth_params),
1739  "?authmod=%s&user=%s&nonce=%s&cnonce=%s&nc=%s&response=%s",
1740  "llnw", user, nonce, cnonce, nc, hashstr1);
1741 
1742  av_free(md5);
1743  return 0;
1744 }
1745 
1746 static int handle_connect_error(URLContext *s, const char *desc)
1747 {
1748  RTMPContext *rt = s->priv_data;
1749  char buf[300], *ptr, authmod[15];
1750  int i = 0, ret = 0;
1751  const char *user = "", *salt = "", *opaque = NULL,
1752  *challenge = NULL, *cptr = NULL, *nonce = NULL;
1753 
1754  if (!(cptr = strstr(desc, "authmod=adobe")) &&
1755  !(cptr = strstr(desc, "authmod=llnw"))) {
1756  av_log(s, AV_LOG_ERROR,
1757  "Unknown connect error (unsupported authentication method?)\n");
1758  return AVERROR_UNKNOWN;
1759  }
1760  cptr += strlen("authmod=");
1761  while (*cptr && *cptr != ' ' && i < sizeof(authmod) - 1)
1762  authmod[i++] = *cptr++;
1763  authmod[i] = '\0';
1764 
1765  if (!rt->username[0] || !rt->password[0]) {
1766  av_log(s, AV_LOG_ERROR, "No credentials set\n");
1767  return AVERROR_UNKNOWN;
1768  }
1769 
1770  if (strstr(desc, "?reason=authfailed")) {
1771  av_log(s, AV_LOG_ERROR, "Incorrect username/password\n");
1772  return AVERROR_UNKNOWN;
1773  } else if (strstr(desc, "?reason=nosuchuser")) {
1774  av_log(s, AV_LOG_ERROR, "Incorrect username\n");
1775  return AVERROR_UNKNOWN;
1776  }
1777 
1778  if (rt->auth_tried) {
1779  av_log(s, AV_LOG_ERROR, "Authentication failed\n");
1780  return AVERROR_UNKNOWN;
1781  }
1782 
1783  rt->auth_params[0] = '\0';
1784 
1785  if (strstr(desc, "code=403 need auth")) {
1786  snprintf(rt->auth_params, sizeof(rt->auth_params),
1787  "?authmod=%s&user=%s", authmod, rt->username);
1788  return 0;
1789  }
1790 
1791  if (!(cptr = strstr(desc, "?reason=needauth"))) {
1792  av_log(s, AV_LOG_ERROR, "No auth parameters found\n");
1793  return AVERROR_UNKNOWN;
1794  }
1795 
1796  av_strlcpy(buf, cptr + 1, sizeof(buf));
1797  ptr = buf;
1798 
1799  while (ptr) {
1800  char *next = strchr(ptr, '&');
1801  char *value = strchr(ptr, '=');
1802  if (next)
1803  *next++ = '\0';
1804  if (value) {
1805  *value++ = '\0';
1806  if (!strcmp(ptr, "user")) {
1807  user = value;
1808  } else if (!strcmp(ptr, "salt")) {
1809  salt = value;
1810  } else if (!strcmp(ptr, "opaque")) {
1811  opaque = value;
1812  } else if (!strcmp(ptr, "challenge")) {
1813  challenge = value;
1814  } else if (!strcmp(ptr, "nonce")) {
1815  nonce = value;
1816  } else {
1817  av_log(s, AV_LOG_INFO, "Ignoring unsupported var %s\n", ptr);
1818  }
1819  } else {
1820  av_log(s, AV_LOG_WARNING, "Variable %s has NULL value\n", ptr);
1821  }
1822  ptr = next;
1823  }
1824 
1825  if (!strcmp(authmod, "adobe")) {
1826  if ((ret = do_adobe_auth(rt, user, salt, opaque, challenge)) < 0)
1827  return ret;
1828  } else {
1829  if ((ret = do_llnw_auth(rt, user, nonce)) < 0)
1830  return ret;
1831  }
1832 
1833  rt->auth_tried = 1;
1834  return 0;
1835 }
1836 
1837 static int handle_invoke_error(URLContext *s, RTMPPacket *pkt)
1838 {
1839  RTMPContext *rt = s->priv_data;
1840  const uint8_t *data_end = pkt->data + pkt->size;
1841  char *tracked_method = NULL;
1842  int level = AV_LOG_ERROR;
1843  uint8_t tmpstr[256];
1844  int ret;
1845 
1846  if ((ret = find_tracked_method(s, pkt, 9, &tracked_method)) < 0)
1847  return ret;
1848 
1849  if (!ff_amf_get_field_value(pkt->data + 9, data_end,
1850  "description", tmpstr, sizeof(tmpstr))) {
1851  if (tracked_method && (!strcmp(tracked_method, "_checkbw") ||
1852  !strcmp(tracked_method, "releaseStream") ||
1853  !strcmp(tracked_method, "FCSubscribe") ||
1854  !strcmp(tracked_method, "FCPublish"))) {
1855  /* Gracefully ignore Adobe-specific historical artifact errors. */
1856  level = AV_LOG_WARNING;
1857  ret = 0;
1858  } else if (tracked_method && !strcmp(tracked_method, "getStreamLength")) {
1859  level = rt->live ? AV_LOG_DEBUG : AV_LOG_WARNING;
1860  ret = 0;
1861  } else if (tracked_method && !strcmp(tracked_method, "connect")) {
1862  ret = handle_connect_error(s, tmpstr);
1863  if (!ret) {
1864  rt->do_reconnect = 1;
1865  level = AV_LOG_VERBOSE;
1866  }
1867  } else
1868  ret = AVERROR_UNKNOWN;
1869  av_log(s, level, "Server error: %s\n", tmpstr);
1870  }
1871 
1872  av_free(tracked_method);
1873  return ret;
1874 }
1875 
1876 static int write_begin(URLContext *s)
1877 {
1878  RTMPContext *rt = s->priv_data;
1879  PutByteContext pbc;
1880  RTMPPacket spkt = { 0 };
1881  int ret;
1882 
1883  // Send Stream Begin 1
1884  if ((ret = ff_rtmp_packet_create(&spkt, RTMP_NETWORK_CHANNEL,
1885  RTMP_PT_USER_CONTROL, 0, 6)) < 0) {
1886  av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
1887  return ret;
1888  }
1889 
1890  bytestream2_init_writer(&pbc, spkt.data, spkt.size);
1891  bytestream2_put_be16(&pbc, 0); // 0 -> Stream Begin
1892  bytestream2_put_be32(&pbc, rt->nb_streamid);
1893 
1894  ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
1895  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
1896 
1897  ff_rtmp_packet_destroy(&spkt);
1898 
1899  return ret;
1900 }
1901 
1902 static int write_status(URLContext *s, RTMPPacket *pkt,
1903  const char *status, const char *description, const char *details)
1904 {
1905  RTMPContext *rt = s->priv_data;
1906  RTMPPacket spkt = { 0 };
1907  uint8_t *pp;
1908  int ret;
1909 
1910  if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
1911  RTMP_PT_INVOKE, 0,
1912  RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
1913  av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
1914  return ret;
1915  }
1916 
1917  pp = spkt.data;
1918  spkt.extra = pkt->extra;
1919  ff_amf_write_string(&pp, "onStatus");
1920  ff_amf_write_number(&pp, 0);
1921  ff_amf_write_null(&pp);
1922 
1923  ff_amf_write_object_start(&pp);
1924  ff_amf_write_field_name(&pp, "level");
1925  ff_amf_write_string(&pp, "status");
1926  ff_amf_write_field_name(&pp, "code");
1927  ff_amf_write_string(&pp, status);
1928  ff_amf_write_field_name(&pp, "description");
1929  ff_amf_write_string(&pp, description);
1930  if (details) {
1931  ff_amf_write_field_name(&pp, "details");
1932  ff_amf_write_string(&pp, details);
1933  }
1934  ff_amf_write_object_end(&pp);
1935 
1936  spkt.size = pp - spkt.data;
1937  ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
1938  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
1939  ff_rtmp_packet_destroy(&spkt);
1940 
1941  return ret;
1942 }
1943 
1944 static int send_invoke_response(URLContext *s, RTMPPacket *pkt)
1945 {
1946  RTMPContext *rt = s->priv_data;
1947  double seqnum;
1948  char filename[128];
1949  char command[64];
1950  int stringlen;
1951  char *pchar;
1952  const uint8_t *p = pkt->data;
1953  uint8_t *pp = NULL;
1954  RTMPPacket spkt = { 0 };
1955  GetByteContext gbc;
1956  int ret;
1957 
1958  bytestream2_init(&gbc, p, pkt->size);
1959  if (ff_amf_read_string(&gbc, command, sizeof(command),
1960  &stringlen)) {
1961  av_log(s, AV_LOG_ERROR, "Error in PT_INVOKE\n");
1962  return AVERROR_INVALIDDATA;
1963  }
1964 
1965  ret = ff_amf_read_number(&gbc, &seqnum);
1966  if (ret)
1967  return ret;
1968  ret = ff_amf_read_null(&gbc);
1969  if (ret)
1970  return ret;
1971  if (!strcmp(command, "FCPublish") ||
1972  !strcmp(command, "publish")) {
1973  ret = ff_amf_read_string(&gbc, filename,
1974  sizeof(filename), &stringlen);
1975  if (ret) {
1976  if (ret == AVERROR(EINVAL))
1977  av_log(s, AV_LOG_ERROR, "Unable to parse stream name - name too long?\n");
1978  else
1979  av_log(s, AV_LOG_ERROR, "Unable to parse stream name\n");
1980  return ret;
1981  }
1982  // check with url
1983  if (s->filename) {
1984  pchar = strrchr(s->filename, '/');
1985  if (!pchar) {
1986  av_log(s, AV_LOG_WARNING,
1987  "Unable to find / in url %s, bad format\n",
1988  s->filename);
1989  pchar = s->filename;
1990  }
1991  pchar++;
1992  if (strcmp(pchar, filename))
1993  av_log(s, AV_LOG_WARNING, "Unexpected stream %s, expecting"
1994  " %s\n", filename, pchar);
1995  }
1996  rt->state = STATE_RECEIVING;
1997  }
1998 
1999  if (!strcmp(command, "FCPublish")) {
2000  if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
2001  RTMP_PT_INVOKE, 0,
2002  RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
2003  av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
2004  return ret;
2005  }
2006  pp = spkt.data;
2007  ff_amf_write_string(&pp, "onFCPublish");
2008  } else if (!strcmp(command, "publish")) {
2009  char statusmsg[sizeof(filename) + 32];
2010  snprintf(statusmsg, sizeof(statusmsg), "%s is now published", filename);
2011  ret = write_begin(s);
2012  if (ret < 0)
2013  return ret;
2014 
2015  // Send onStatus(NetStream.Publish.Start)
2016  return write_status(s, pkt, "NetStream.Publish.Start",
2017  statusmsg, filename);
2018  } else if (!strcmp(command, "play")) {
2019  ret = write_begin(s);
2020  if (ret < 0)
2021  return ret;
2022  rt->state = STATE_SENDING;
2023  return write_status(s, pkt, "NetStream.Play.Start",
2024  "playing stream", NULL);
2025  } else {
2026  if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
2027  RTMP_PT_INVOKE, 0,
2028  RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
2029  av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
2030  return ret;
2031  }
2032  pp = spkt.data;
2033  ff_amf_write_string(&pp, "_result");
2034  ff_amf_write_number(&pp, seqnum);
2035  ff_amf_write_null(&pp);
2036  if (!strcmp(command, "createStream")) {
2037  rt->nb_streamid++;
2038  if (rt->nb_streamid == 0 || rt->nb_streamid == 2)
2039  rt->nb_streamid++; /* Values 0 and 2 are reserved */
2040  ff_amf_write_number(&pp, rt->nb_streamid);
2041  /* By now we don't control which streams are removed in
2042  * deleteStream. There is no stream creation control
2043  * if a client creates more than 2^32 - 2 streams. */
2044  }
2045  }
2046  spkt.size = pp - spkt.data;
2047  ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
2048  &rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
2049  ff_rtmp_packet_destroy(&spkt);
2050  return ret;
2051 }
2052 
2053 /**
2054  * Read the AMF_NUMBER response ("_result") to a function call
2055  * (e.g. createStream()). This response should be made up of the AMF_STRING
2056  * "result", a NULL object and then the response encoded as AMF_NUMBER. On a
2057  * successful response, we will return set the value to number (otherwise number
2058  * will not be changed).
2059  *
2060  * @return 0 if reading the value succeeds, negative value otherwise
2061  */
2062 static int read_number_result(RTMPPacket *pkt, double *number)
2063 {
2064  // We only need to fit "_result" in this.
2065  uint8_t strbuffer[8];
2066  int stringlen;
2067  double numbuffer;
2068  GetByteContext gbc;
2069 
2070  bytestream2_init(&gbc, pkt->data, pkt->size);
2071 
2072  // Value 1/4: "_result" as AMF_STRING
2073  if (ff_amf_read_string(&gbc, strbuffer, sizeof(strbuffer), &stringlen))
2074  return AVERROR_INVALIDDATA;
2075  if (strcmp(strbuffer, "_result"))
2076  return AVERROR_INVALIDDATA;
2077  // Value 2/4: The callee reference number
2078  if (ff_amf_read_number(&gbc, &numbuffer))
2079  return AVERROR_INVALIDDATA;
2080  // Value 3/4: Null
2081  if (ff_amf_read_null(&gbc))
2082  return AVERROR_INVALIDDATA;
2083  // Value 4/4: The response as AMF_NUMBER
2084  if (ff_amf_read_number(&gbc, &numbuffer))
2085  return AVERROR_INVALIDDATA;
2086  else
2087  *number = numbuffer;
2088 
2089  return 0;
2090 }
2091 
2092 static int handle_invoke_result(URLContext *s, RTMPPacket *pkt)
2093 {
2094  RTMPContext *rt = s->priv_data;
2095  char *tracked_method = NULL;
2096  int ret = 0;
2097 
2098  if ((ret = find_tracked_method(s, pkt, 10, &tracked_method)) < 0)
2099  return ret;
2100 
2101  if (!tracked_method) {
2102  /* Ignore this reply when the current method is not tracked. */
2103  return ret;
2104  }
2105 
2106  if (!strcmp(tracked_method, "connect")) {
2107  if (!rt->is_input) {
2108  if ((ret = gen_release_stream(s, rt)) < 0)
2109  goto fail;
2110 
2111  if ((ret = gen_fcpublish_stream(s, rt)) < 0)
2112  goto fail;
2113  } else {
2114  if ((ret = gen_window_ack_size(s, rt)) < 0)
2115  goto fail;
2116  }
2117 
2118  if ((ret = gen_create_stream(s, rt)) < 0)
2119  goto fail;
2120 
2121  if (rt->is_input) {
2122  /* Send the FCSubscribe command when the name of live
2123  * stream is defined by the user or if it's a live stream. */
2124  if (rt->subscribe) {
2125  if ((ret = gen_fcsubscribe_stream(s, rt, rt->subscribe)) < 0)
2126  goto fail;
2127  } else if (rt->live == -1) {
2128  if ((ret = gen_fcsubscribe_stream(s, rt, rt->playpath)) < 0)
2129  goto fail;
2130  }
2131  }
2132  } else if (!strcmp(tracked_method, "createStream")) {
2133  double stream_id;
2134  if (read_number_result(pkt, &stream_id)) {
2135  av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n");
2136  } else {
2137  rt->stream_id = stream_id;
2138  }
2139 
2140  if (!rt->is_input) {
2141  if ((ret = gen_publish(s, rt)) < 0)
2142  goto fail;
2143  } else {
2144  if (rt->live != -1) {
2145  if ((ret = gen_get_stream_length(s, rt)) < 0)
2146  goto fail;
2147  }
2148  if ((ret = gen_play(s, rt)) < 0)
2149  goto fail;
2150  if ((ret = gen_buffer_time(s, rt)) < 0)
2151  goto fail;
2152  }
2153  } else if (!strcmp(tracked_method, "getStreamLength")) {
2154  if (read_number_result(pkt, &rt->duration)) {
2155  av_log(s, AV_LOG_WARNING, "Unexpected reply on getStreamLength()\n");
2156  }
2157  }
2158 
2159 fail:
2160  av_free(tracked_method);
2161  return ret;
2162 }
2163 
2164 static int handle_invoke_status(URLContext *s, RTMPPacket *pkt)
2165 {
2166  RTMPContext *rt = s->priv_data;
2167  const uint8_t *data_end = pkt->data + pkt->size;
2168  const uint8_t *ptr = pkt->data + RTMP_HEADER;
2169  uint8_t tmpstr[256];
2170  int i, t;
2171 
2172  for (i = 0; i < 2; i++) {
2173  t = ff_amf_tag_size(ptr, data_end);
2174  if (t < 0)
2175  return 1;
2176  ptr += t;
2177  }
2178 
2179  t = ff_amf_get_field_value(ptr, data_end, "level", tmpstr, sizeof(tmpstr));
2180  if (!t && !strcmp(tmpstr, "error")) {
2181  t = ff_amf_get_field_value(ptr, data_end,
2182  "description", tmpstr, sizeof(tmpstr));
2183  if (t || !tmpstr[0])
2184  t = ff_amf_get_field_value(ptr, data_end, "code",
2185  tmpstr, sizeof(tmpstr));
2186  if (!t)
2187  av_log(s, AV_LOG_ERROR, "Server error: %s\n", tmpstr);
2188  return -1;
2189  }
2190 
2191  t = ff_amf_get_field_value(ptr, data_end, "code", tmpstr, sizeof(tmpstr));
2192  if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING;
2193  if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED;
2194  if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED;
2195  if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING;
2196  if (!t && !strcmp(tmpstr, "NetStream.Seek.Notify")) rt->state = STATE_PLAYING;
2197 
2198  return 0;
2199 }
2200 
2201 static int handle_invoke(URLContext *s, RTMPPacket *pkt)
2202 {
2203  RTMPContext *rt = s->priv_data;
2204  int ret = 0;
2205 
2206  //TODO: check for the messages sent for wrong state?
2207  if (ff_amf_match_string(pkt->data, pkt->size, "_error")) {
2208  if ((ret = handle_invoke_error(s, pkt)) < 0)
2209  return ret;
2210  } else if (ff_amf_match_string(pkt->data, pkt->size, "_result")) {
2211  if ((ret = handle_invoke_result(s, pkt)) < 0)
2212  return ret;
2213  } else if (ff_amf_match_string(pkt->data, pkt->size, "onStatus")) {
2214  if ((ret = handle_invoke_status(s, pkt)) < 0)
2215  return ret;
2216  } else if (ff_amf_match_string(pkt->data, pkt->size, "onBWDone")) {
2217  if ((ret = gen_check_bw(s, rt)) < 0)
2218  return ret;
2219  } else if (ff_amf_match_string(pkt->data, pkt->size, "releaseStream") ||
2220  ff_amf_match_string(pkt->data, pkt->size, "FCPublish") ||
2221  ff_amf_match_string(pkt->data, pkt->size, "publish") ||
2222  ff_amf_match_string(pkt->data, pkt->size, "play") ||
2223  ff_amf_match_string(pkt->data, pkt->size, "_checkbw") ||
2224  ff_amf_match_string(pkt->data, pkt->size, "createStream")) {
2225  if ((ret = send_invoke_response(s, pkt)) < 0)
2226  return ret;
2227  }
2228 
2229  return ret;
2230 }
2231 
2232 static int update_offset(RTMPContext *rt, int size)
2233 {
2234  int old_flv_size;
2235 
2236  // generate packet header and put data into buffer for FLV demuxer
2237  if (rt->flv_off < rt->flv_size) {
2238  // There is old unread data in the buffer, thus append at the end
2239  old_flv_size = rt->flv_size;
2240  rt->flv_size += size;
2241  } else {
2242  // All data has been read, write the new data at the start of the buffer
2243  old_flv_size = 0;
2244  rt->flv_size = size;
2245  rt->flv_off = 0;
2246  }
2247 
2248  return old_flv_size;
2249 }
2250 
2251 static int append_flv_data(RTMPContext *rt, RTMPPacket *pkt, int skip)
2252 {
2253  int old_flv_size, ret;
2254  PutByteContext pbc;
2255  const uint8_t *data = pkt->data + skip;
2256  const int size = pkt->size - skip;
2257  uint32_t ts = pkt->timestamp;
2258 
2259  if (pkt->type == RTMP_PT_AUDIO) {
2260  rt->has_audio = 1;
2261  } else if (pkt->type == RTMP_PT_VIDEO) {
2262  rt->has_video = 1;
2263  }
2264 
2265  old_flv_size = update_offset(rt, size + 15);
2266 
2267  if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) {
2268  rt->flv_size = rt->flv_off = 0;
2269  return ret;
2270  }
2271  bytestream2_init_writer(&pbc, rt->flv_data, rt->flv_size);
2272  bytestream2_skip_p(&pbc, old_flv_size);
2273  bytestream2_put_byte(&pbc, pkt->type);
2274  bytestream2_put_be24(&pbc, size);
2275  bytestream2_put_be24(&pbc, ts);
2276  bytestream2_put_byte(&pbc, ts >> 24);
2277  bytestream2_put_be24(&pbc, 0);
2278  bytestream2_put_buffer(&pbc, data, size);
2279  bytestream2_put_be32(&pbc, size + RTMP_HEADER);
2280 
2281  return 0;
2282 }
2283 
2284 static int handle_notify(URLContext *s, RTMPPacket *pkt)
2285 {
2286  RTMPContext *rt = s->priv_data;
2287  uint8_t commandbuffer[64];
2288  char statusmsg[128];
2289  int stringlen, ret, skip = 0;
2290  GetByteContext gbc;
2291 
2292  bytestream2_init(&gbc, pkt->data, pkt->size);
2293  if (ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer),
2294  &stringlen))
2295  return AVERROR_INVALIDDATA;
2296 
2297  if (!strcmp(commandbuffer, "onMetaData")) {
2298  // metadata properties should be stored in a mixed array
2299  if (bytestream2_get_byte(&gbc) == AMF_DATA_TYPE_MIXEDARRAY) {
2300  // We have found a metaData Array so flv can determine the streams
2301  // from this.
2302  rt->received_metadata = 1;
2303  // skip 32-bit max array index
2304  bytestream2_skip(&gbc, 4);
2305  while (bytestream2_get_bytes_left(&gbc) > 3) {
2306  if (ff_amf_get_string(&gbc, statusmsg, sizeof(statusmsg),
2307  &stringlen))
2308  return AVERROR_INVALIDDATA;
2309  // We do not care about the content of the property (yet).
2310  stringlen = ff_amf_tag_size(gbc.buffer, gbc.buffer_end);
2311  if (stringlen < 0)
2312  return AVERROR_INVALIDDATA;
2313  bytestream2_skip(&gbc, stringlen);
2314 
2315  // The presence of the following properties indicates that the
2316  // respective streams are present.
2317  if (!strcmp(statusmsg, "videocodecid")) {
2318  rt->has_video = 1;
2319  }
2320  if (!strcmp(statusmsg, "audiocodecid")) {
2321  rt->has_audio = 1;
2322  }
2323  }
2324  if (bytestream2_get_be24(&gbc) != AMF_END_OF_OBJECT)
2325  return AVERROR_INVALIDDATA;
2326  }
2327  }
2328 
2329  // Skip the @setDataFrame string and validate it is a notification
2330  if (!strcmp(commandbuffer, "@setDataFrame")) {
2331  skip = gbc.buffer - pkt->data;
2332  ret = ff_amf_read_string(&gbc, statusmsg,
2333  sizeof(statusmsg), &stringlen);
2334  if (ret < 0)
2335  return AVERROR_INVALIDDATA;
2336  }
2337 
2338  return append_flv_data(rt, pkt, skip);
2339 }
2340 
2341 /**
2342  * Parse received packet and possibly perform some action depending on
2343  * the packet contents.
2344  * @return 0 for no errors, negative values for serious errors which prevent
2345  * further communications, positive values for uncritical errors
2346  */
2347 static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt)
2348 {
2349  int ret;
2350 
2351 #ifdef DEBUG
2352  ff_rtmp_packet_dump(s, pkt);
2353 #endif
2354 
2355  switch (pkt->type) {
2356  case RTMP_PT_BYTES_READ:
2357  av_log(s, AV_LOG_TRACE, "received bytes read report\n");
2358  break;
2359  case RTMP_PT_CHUNK_SIZE:
2360  if ((ret = handle_chunk_size(s, pkt)) < 0)
2361  return ret;
2362  break;
2363  case RTMP_PT_USER_CONTROL:
2364  if ((ret = handle_user_control(s, pkt)) < 0)
2365  return ret;
2366  break;
2367  case RTMP_PT_SET_PEER_BW:
2368  if ((ret = handle_set_peer_bw(s, pkt)) < 0)
2369  return ret;
2370  break;
2371  case RTMP_PT_WINDOW_ACK_SIZE:
2372  if ((ret = handle_window_ack_size(s, pkt)) < 0)
2373  return ret;
2374  break;
2375  case RTMP_PT_INVOKE:
2376  if ((ret = handle_invoke(s, pkt)) < 0)
2377  return ret;
2378  break;
2379  case RTMP_PT_VIDEO:
2380  case RTMP_PT_AUDIO:
2381  case RTMP_PT_METADATA:
2382  case RTMP_PT_NOTIFY:
2383  /* Audio, Video and Metadata packets are parsed in get_packet() */
2384  break;
2385  default:
2386  av_log(s, AV_LOG_VERBOSE, "Unknown packet type received 0x%02X\n", pkt->type);
2387  break;
2388  }
2389  return 0;
2390 }
2391 
2392 static int handle_metadata(RTMPContext *rt, RTMPPacket *pkt)
2393 {
2394  int ret, old_flv_size, type;
2395  const uint8_t *next;
2396  uint8_t *p;
2397  uint32_t size;
2398  uint32_t ts, cts, pts = 0;
2399 
2400  old_flv_size = update_offset(rt, pkt->size);
2401 
2402  if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) {
2403  rt->flv_size = rt->flv_off = 0;
2404  return ret;
2405  }
2406 
2407  next = pkt->data;
2408  p = rt->flv_data + old_flv_size;
2409 
2410  /* copy data while rewriting timestamps */
2411  ts = pkt->timestamp;
2412 
2413  while (next - pkt->data < pkt->size - RTMP_HEADER) {
2414  type = bytestream_get_byte(&next);
2415  size = bytestream_get_be24(&next);
2416  cts = bytestream_get_be24(&next);
2417  cts |= bytestream_get_byte(&next) << 24;
2418  if (!pts)
2419  pts = cts;
2420  ts += cts - pts;
2421  pts = cts;
2422  if (size + 3 + 4 > pkt->data + pkt->size - next)
2423  break;
2424  bytestream_put_byte(&p, type);
2425  bytestream_put_be24(&p, size);
2426  bytestream_put_be24(&p, ts);
2427  bytestream_put_byte(&p, ts >> 24);
2428  memcpy(p, next, size + 3 + 4);
2429  p += size + 3;
2430  bytestream_put_be32(&p, size + RTMP_HEADER);
2431  next += size + 3 + 4;
2432  }
2433  if (p != rt->flv_data + rt->flv_size) {
2434  av_log(rt, AV_LOG_WARNING, "Incomplete flv packets in "
2435  "RTMP_PT_METADATA packet\n");
2436  rt->flv_size = p - rt->flv_data;
2437  }
2438 
2439  return 0;
2440 }
2441 
2442 /**
2443  * Interact with the server by receiving and sending RTMP packets until
2444  * there is some significant data (media data or expected status notification).
2445  *
2446  * @param s reading context
2447  * @param for_header non-zero value tells function to work until it
2448  * gets notification from the server that playing has been started,
2449  * otherwise function will work until some media data is received (or
2450  * an error happens)
2451  * @return 0 for successful operation, negative value in case of error
2452  */
2453 static int get_packet(URLContext *s, int for_header)
2454 {
2455  RTMPContext *rt = s->priv_data;
2456  int ret;
2457 
2458  if (rt->state == STATE_STOPPED)
2459  return AVERROR_EOF;
2460 
2461  for (;;) {
2462  RTMPPacket rpkt = { 0 };
2463  if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt,
2464  rt->in_chunk_size, &rt->prev_pkt[0],
2465  &rt->nb_prev_pkt[0])) <= 0) {
2466  if (ret == 0) {
2467  return AVERROR(EAGAIN);
2468  } else {
2469  return AVERROR(EIO);
2470  }
2471  }
2472 
2473  // Track timestamp for later use
2474  rt->last_timestamp = rpkt.timestamp;
2475 
2476  rt->bytes_read += ret;
2477  if (rt->bytes_read - rt->last_bytes_read > rt->receive_report_size) {
2478  av_log(s, AV_LOG_DEBUG, "Sending bytes read report\n");
2479  if ((ret = gen_bytes_read(s, rt, rpkt.timestamp + 1)) < 0) {
2480  ff_rtmp_packet_destroy(&rpkt);
2481  return ret;
2482  }
2483  rt->last_bytes_read = rt->bytes_read;
2484  }
2485 
2486  ret = rtmp_parse_result(s, rt, &rpkt);
2487 
2488  // At this point we must check if we are in the seek state and continue
2489  // with the next packet. handle_invoke will get us out of this state
2490  // when the right message is encountered
2491  if (rt->state == STATE_SEEKING) {
2492  ff_rtmp_packet_destroy(&rpkt);
2493  // We continue, let the natural flow of things happen:
2494  // AVERROR(EAGAIN) or handle_invoke gets us out of here
2495  continue;
2496  }
2497 
2498  if (ret < 0) {//serious error in current packet
2499  ff_rtmp_packet_destroy(&rpkt);
2500  return ret;
2501  }
2502  if (rt->do_reconnect && for_header) {
2503  ff_rtmp_packet_destroy(&rpkt);
2504  return 0;
2505  }
2506  if (rt->state == STATE_STOPPED) {
2507  ff_rtmp_packet_destroy(&rpkt);
2508  return AVERROR_EOF;
2509  }
2510  if (for_header && (rt->state == STATE_PLAYING ||
2511  rt->state == STATE_PUBLISHING ||
2512  rt->state == STATE_SENDING ||
2513  rt->state == STATE_RECEIVING)) {
2514  ff_rtmp_packet_destroy(&rpkt);
2515  return 0;
2516  }
2517  if (!rpkt.size || !rt->is_input) {
2518  ff_rtmp_packet_destroy(&rpkt);
2519  continue;
2520  }
2521  if (rpkt.type == RTMP_PT_VIDEO || rpkt.type == RTMP_PT_AUDIO) {
2522  ret = append_flv_data(rt, &rpkt, 0);
2523  ff_rtmp_packet_destroy(&rpkt);
2524  return ret;
2525  } else if (rpkt.type == RTMP_PT_NOTIFY) {
2526  ret = handle_notify(s, &rpkt);
2527  ff_rtmp_packet_destroy(&rpkt);
2528  return ret;
2529  } else if (rpkt.type == RTMP_PT_METADATA) {
2530  ret = handle_metadata(rt, &rpkt);
2531  ff_rtmp_packet_destroy(&rpkt);
2532  return ret;
2533  }
2534  ff_rtmp_packet_destroy(&rpkt);
2535  }
2536 }
2537 
2538 static int rtmp_close(URLContext *h)
2539 {
2540  RTMPContext *rt = h->priv_data;
2541  int ret = 0, i, j;
2542 
2543  if (!rt->is_input) {
2544  rt->flv_data = NULL;
2545  if (rt->out_pkt.size)
2546  ff_rtmp_packet_destroy(&rt->out_pkt);
2547  if (rt->state > STATE_FCPUBLISH)
2548  ret = gen_fcunpublish_stream(h, rt);
2549  }
2550  if (rt->state > STATE_HANDSHAKED)
2551  ret = gen_delete_stream(h, rt);
2552  for (i = 0; i < 2; i++) {
2553  for (j = 0; j < rt->nb_prev_pkt[i]; j++)
2554  ff_rtmp_packet_destroy(&rt->prev_pkt[i][j]);
2555  av_freep(&rt->prev_pkt[i]);
2556  }
2557 
2558  free_tracked_methods(rt);
2559  av_freep(&rt->flv_data);
2560  ffurl_closep(&rt->stream);
2561  return ret;
2562 }
2563 
2564 /**
2565  * Insert a fake onMetadata packet into the FLV stream to notify the FLV
2566  * demuxer about the duration of the stream.
2567  *
2568  * This should only be done if there was no real onMetadata packet sent by the
2569  * server at the start of the stream and if we were able to retrieve a valid
2570  * duration via a getStreamLength call.
2571  *
2572  * @return 0 for successful operation, negative value in case of error
2573  */
2574 static int inject_fake_duration_metadata(RTMPContext *rt)
2575 {
2576  // We need to insert the metadata packet directly after the FLV
2577  // header, i.e. we need to move all other already read data by the
2578  // size of our fake metadata packet.
2579 
2580  uint8_t* p;
2581  // Keep old flv_data pointer
2582  uint8_t* old_flv_data = rt->flv_data;
2583  // Allocate a new flv_data pointer with enough space for the additional package
2584  if (!(rt->flv_data = av_malloc(rt->flv_size + 55))) {
2585  rt->flv_data = old_flv_data;
2586  return AVERROR(ENOMEM);
2587  }
2588 
2589  // Copy FLV header
2590  memcpy(rt->flv_data, old_flv_data, 13);
2591  // Copy remaining packets
2592  memcpy(rt->flv_data + 13 + 55, old_flv_data + 13, rt->flv_size - 13);
2593  // Increase the size by the injected packet
2594  rt->flv_size += 55;
2595  // Delete the old FLV data
2596  av_freep(&old_flv_data);
2597 
2598  p = rt->flv_data + 13;
2599  bytestream_put_byte(&p, FLV_TAG_TYPE_META);
2600  bytestream_put_be24(&p, 40); // size of data part (sum of all parts below)
2601  bytestream_put_be24(&p, 0); // timestamp
2602  bytestream_put_be32(&p, 0); // reserved
2603 
2604  // first event name as a string
2605  bytestream_put_byte(&p, AMF_DATA_TYPE_STRING);
2606  // "onMetaData" as AMF string
2607  bytestream_put_be16(&p, 10);
2608  bytestream_put_buffer(&p, "onMetaData", 10);
2609 
2610  // mixed array (hash) with size and string/type/data tuples
2611  bytestream_put_byte(&p, AMF_DATA_TYPE_MIXEDARRAY);
2612  bytestream_put_be32(&p, 1); // metadata_count
2613 
2614  // "duration" as AMF string
2615  bytestream_put_be16(&p, 8);
2616  bytestream_put_buffer(&p, "duration", 8);
2617  bytestream_put_byte(&p, AMF_DATA_TYPE_NUMBER);
2618  bytestream_put_be64(&p, av_double2int(rt->duration));
2619 
2620  // Finalise object
2621  bytestream_put_be16(&p, 0); // Empty string
2622  bytestream_put_byte(&p, AMF_END_OF_OBJECT);
2623  bytestream_put_be32(&p, 40 + RTMP_HEADER); // size of data part (sum of all parts above)
2624 
2625  return 0;
2626 }
2627 
2628 /**
2629  * Open RTMP connection and verify that the stream can be played.
2630  *
2631  * URL syntax: rtmp://server[:port][/app][/playpath]
2632  * where 'app' is first one or two directories in the path
2633  * (e.g. /ondemand/, /flash/live/, etc.)
2634  * and 'playpath' is a file name (the rest of the path,
2635  * may be prefixed with "mp4:")
2636  */
2637 static int rtmp_open(URLContext *s, const char *uri, int flags, AVDictionary **opts)
2638 {
2639  RTMPContext *rt = s->priv_data;
2640  char proto[8], hostname[256], path[1024], auth[100], *fname;
2641  char *old_app, *qmark, *n, fname_buffer[1024];
2642  uint8_t buf[2048];
2643  int port;
2644  int ret;
2645 
2646  if (rt->listen_timeout > 0)
2647  rt->listen = 1;
2648 
2649  rt->is_input = !(flags & AVIO_FLAG_WRITE);
2650 
2651  av_url_split(proto, sizeof(proto), auth, sizeof(auth),
2652  hostname, sizeof(hostname), &port,
2653  path, sizeof(path), s->filename);
2654 
2655  n = strchr(path, ' ');
2656  if (n) {
2657  av_log(s, AV_LOG_WARNING,
2658  "Detected librtmp style URL parameters, these aren't supported "
2659  "by the libavformat internal RTMP handler currently enabled. "
2660  "See the documentation for the correct way to pass parameters.\n");
2661  *n = '\0'; // Trim not supported part
2662  }
2663 
2664  if (auth[0]) {
2665  char *ptr = strchr(auth, ':');
2666  if (ptr) {
2667  *ptr = '\0';
2668  av_strlcpy(rt->username, auth, sizeof(rt->username));
2669  av_strlcpy(rt->password, ptr + 1, sizeof(rt->password));
2670  }
2671  }
2672 
2673  if (rt->listen && strcmp(proto, "rtmp")) {
2674  av_log(s, AV_LOG_ERROR, "rtmp_listen not available for %s\n",
2675  proto);
2676  return AVERROR(EINVAL);
2677  }
2678  if (!strcmp(proto, "rtmpt") || !strcmp(proto, "rtmpts")) {
2679  if (!strcmp(proto, "rtmpts"))
2680  av_dict_set(opts, "ffrtmphttp_tls", "1", AV_DICT_MATCH_CASE);
2681 
2682  /* open the http tunneling connection */
2683  ff_url_join(buf, sizeof(buf), "ffrtmphttp", NULL, hostname, port, NULL);
2684  } else if (!strcmp(proto, "rtmps")) {
2685  /* open the tls connection */
2686  if (port < 0)
2687  port = RTMPS_DEFAULT_PORT;
2688  ff_url_join(buf, sizeof(buf), "tls", NULL, hostname, port, NULL);
2689  } else if (!strcmp(proto, "rtmpe") || (!strcmp(proto, "rtmpte"))) {
2690  if (!strcmp(proto, "rtmpte"))
2691  av_dict_set(opts, "ffrtmpcrypt_tunneling", "1", 1);
2692 
2693  /* open the encrypted connection */
2694  ff_url_join(buf, sizeof(buf), "ffrtmpcrypt", NULL, hostname, port, NULL);
2695  rt->encrypted = 1;
2696  } else {
2697  /* open the tcp connection */
2698  if (port < 0)
2699  port = RTMP_DEFAULT_PORT;
2700  if (rt->listen)
2701  ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port,
2702  "?listen&listen_timeout=%d&tcp_nodelay=%d",
2703  rt->listen_timeout * 1000, rt->tcp_nodelay);
2704  else
2705  ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, "?tcp_nodelay=%d", rt->tcp_nodelay);
2706  }
2707 
2708 reconnect:
2709  if ((ret = ffurl_open_whitelist(&rt->stream, buf, AVIO_FLAG_READ_WRITE,
2710  &s->interrupt_callback, opts,
2711  s->protocol_whitelist, s->protocol_blacklist, s)) < 0) {
2712  av_log(s , AV_LOG_ERROR, "Cannot open connection %s\n", buf);
2713  goto fail;
2714  }
2715 
2716  if (rt->swfverify) {
2717  if ((ret = rtmp_calc_swfhash(s)) < 0)
2718  goto fail;
2719  }
2720 
2721  rt->state = STATE_START;
2722  if (!rt->listen && (ret = rtmp_handshake(s, rt)) < 0)
2723  goto fail;
2724  if (rt->listen && (ret = rtmp_server_handshake(s, rt)) < 0)
2725  goto fail;
2726 
2727  rt->out_chunk_size = 128;
2728  rt->in_chunk_size = 128; // Probably overwritten later
2729  rt->state = STATE_HANDSHAKED;
2730 
2731  // Keep the application name when it has been defined by the user.
2732  old_app = rt->app;
2733 
2734  rt->app = av_malloc(APP_MAX_LENGTH);
2735  if (!rt->app) {
2736  ret = AVERROR(ENOMEM);
2737  goto fail;
2738  }
2739 
2740  //extract "app" part from path
2741  qmark = strchr(path, '?');
2742  if (qmark && strstr(qmark, "slist=")) {
2743  char* amp;
2744  // After slist we have the playpath, the full path is used as app
2745  av_strlcpy(rt->app, path + 1, APP_MAX_LENGTH);
2746  fname = strstr(path, "slist=") + 6;
2747  // Strip any further query parameters from fname
2748  amp = strchr(fname, '&');
2749  if (amp) {
2750  av_strlcpy(fname_buffer, fname, FFMIN(amp - fname + 1,
2751  sizeof(fname_buffer)));
2752  fname = fname_buffer;
2753  }
2754  } else if (!strncmp(path, "/ondemand/", 10)) {
2755  fname = path + 10;
2756  memcpy(rt->app, "ondemand", 9);
2757  } else {
2758  char *next = *path ? path + 1 : path;
2759  char *p = strchr(next, '/');
2760  if (!p) {
2761  if (old_app) {
2762  // If name of application has been defined by the user, assume that
2763  // playpath is provided in the URL
2764  fname = next;
2765  } else {
2766  fname = NULL;
2767  av_strlcpy(rt->app, next, APP_MAX_LENGTH);
2768  }
2769  } else {
2770  // make sure we do not mismatch a playpath for an application instance
2771  char *c = strchr(p + 1, ':');
2772  fname = strchr(p + 1, '/');
2773  if (!fname || (c && c < fname)) {
2774  fname = p + 1;
2775  av_strlcpy(rt->app, path + 1, FFMIN(p - path, APP_MAX_LENGTH));
2776  } else {
2777  fname++;
2778  av_strlcpy(rt->app, path + 1, FFMIN(fname - path - 1, APP_MAX_LENGTH));
2779  }
2780  }
2781  }
2782 
2783  if (old_app) {
2784  // The name of application has been defined by the user, override it.
2785  if (strlen(old_app) >= APP_MAX_LENGTH) {
2786  ret = AVERROR(EINVAL);
2787  goto fail;
2788  }
2789  av_free(rt->app);
2790  rt->app = old_app;
2791  }
2792 
2793  if (!rt->playpath) {
2794  int max_len = 1;
2795  if (fname)
2796  max_len = strlen(fname) + 5; // add prefix "mp4:"
2797  rt->playpath = av_malloc(max_len);
2798  if (!rt->playpath) {
2799  ret = AVERROR(ENOMEM);
2800  goto fail;
2801  }
2802 
2803  if (fname) {
2804  int len = strlen(fname);
2805  if (!strchr(fname, ':') && len >= 4 &&
2806  (!strcmp(fname + len - 4, ".f4v") ||
2807  !strcmp(fname + len - 4, ".mp4"))) {
2808  memcpy(rt->playpath, "mp4:", 5);
2809  } else {
2810  if (len >= 4 && !strcmp(fname + len - 4, ".flv"))
2811  fname[len - 4] = '\0';
2812  rt->playpath[0] = 0;
2813  }
2814  av_strlcat(rt->playpath, fname, max_len);
2815  } else {
2816  rt->playpath[0] = '\0';
2817  }
2818  }
2819 
2820  if (!rt->tcurl) {
2821  rt->tcurl = av_malloc(TCURL_MAX_LENGTH);
2822  if (!rt->tcurl) {
2823  ret = AVERROR(ENOMEM);
2824  goto fail;
2825  }
2826  ff_url_join(rt->tcurl, TCURL_MAX_LENGTH, proto, NULL, hostname,
2827  port, "/%s", rt->app);
2828  }
2829 
2830  if (!rt->flashver) {
2831  rt->flashver = av_malloc(FLASHVER_MAX_LENGTH);
2832  if (!rt->flashver) {
2833  ret = AVERROR(ENOMEM);
2834  goto fail;
2835  }
2836  if (rt->is_input) {
2837  snprintf(rt->flashver, FLASHVER_MAX_LENGTH, "%s %d,%d,%d,%d",
2838  RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1, RTMP_CLIENT_VER2,
2839  RTMP_CLIENT_VER3, RTMP_CLIENT_VER4);
2840  } else {
2841  snprintf(rt->flashver, FLASHVER_MAX_LENGTH,
2842  "FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT);
2843  }
2844  }
2845 
2846  rt->receive_report_size = 1048576;
2847  rt->bytes_read = 0;
2848  rt->has_audio = 0;
2849  rt->has_video = 0;
2850  rt->received_metadata = 0;
2851  rt->last_bytes_read = 0;
2852  rt->max_sent_unacked = 2500000;
2853  rt->duration = 0;
2854 
2855  av_log(s, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n",
2856  proto, path, rt->app, rt->playpath);
2857  if (!rt->listen) {
2858  if ((ret = gen_connect(s, rt)) < 0)
2859  goto fail;
2860  } else {
2861  if ((ret = read_connect(s, s->priv_data)) < 0)
2862  goto fail;
2863  }
2864 
2865  do {
2866  ret = get_packet(s, 1);
2867  } while (ret == AVERROR(EAGAIN));
2868  if (ret < 0)
2869  goto fail;
2870 
2871  if (rt->do_reconnect) {
2872  int i;
2873  ffurl_closep(&rt->stream);
2874  rt->do_reconnect = 0;
2875  rt->nb_invokes = 0;
2876  for (i = 0; i < 2; i++)
2877  memset(rt->prev_pkt[i], 0,
2878  sizeof(**rt->prev_pkt) * rt->nb_prev_pkt[i]);
2879  free_tracked_methods(rt);
2880  goto reconnect;
2881  }
2882 
2883  if (rt->is_input) {
2884  // generate FLV header for demuxer
2885  rt->flv_size = 13;
2886  if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0)
2887  goto fail;
2888  rt->flv_off = 0;
2889  memcpy(rt->flv_data, "FLV\1\0\0\0\0\011\0\0\0\0", rt->flv_size);
2890 
2891  // Read packets until we reach the first A/V packet or read metadata.
2892  // If there was a metadata package in front of the A/V packets, we can
2893  // build the FLV header from this. If we do not receive any metadata,
2894  // the FLV decoder will allocate the needed streams when their first
2895  // audio or video packet arrives.
2896  while (!rt->has_audio && !rt->has_video && !rt->received_metadata) {
2897  if ((ret = get_packet(s, 0)) < 0)
2898  goto fail;
2899  }
2900 
2901  // Either after we have read the metadata or (if there is none) the
2902  // first packet of an A/V stream, we have a better knowledge about the
2903  // streams, so set the FLV header accordingly.
2904  if (rt->has_audio) {
2905  rt->flv_data[4] |= FLV_HEADER_FLAG_HASAUDIO;
2906  }
2907  if (rt->has_video) {
2908  rt->flv_data[4] |= FLV_HEADER_FLAG_HASVIDEO;
2909  }
2910 
2911  // If we received the first packet of an A/V stream and no metadata but
2912  // the server returned a valid duration, create a fake metadata packet
2913  // to inform the FLV decoder about the duration.
2914  if (!rt->received_metadata && rt->duration > 0) {
2915  if ((ret = inject_fake_duration_metadata(rt)) < 0)
2916  goto fail;
2917  }
2918  } else {
2919  rt->flv_size = 0;
2920  rt->flv_data = NULL;
2921  rt->flv_off = 0;
2922  rt->skip_bytes = 13;
2923  }
2924 
2925  s->max_packet_size = rt->stream->max_packet_size;
2926  s->is_streamed = 1;
2927  return 0;
2928 
2929 fail:
2930  rtmp_close(s);
2931  return ret;
2932 }
2933 
2934 static int rtmp_read(URLContext *s, uint8_t *buf, int size)
2935 {
2936  RTMPContext *rt = s->priv_data;
2937  int orig_size = size;
2938  int ret;
2939 
2940  while (size > 0) {
2941  int data_left = rt->flv_size - rt->flv_off;
2942 
2943  if (data_left >= size) {
2944  memcpy(buf, rt->flv_data + rt->flv_off, size);
2945  rt->flv_off += size;
2946  return orig_size;
2947  }
2948  if (data_left > 0) {
2949  memcpy(buf, rt->flv_data + rt->flv_off, data_left);
2950  buf += data_left;
2951  size -= data_left;
2952  rt->flv_off = rt->flv_size;
2953  return data_left;
2954  }
2955  if ((ret = get_packet(s, 0)) < 0)
2956  return ret;
2957  }
2958  return orig_size;
2959 }
2960 
2961 static int64_t rtmp_seek(void *opaque, int stream_index, int64_t timestamp,
2962  int flags)
2963 {
2964  URLContext *s = opaque;
2965  RTMPContext *rt = s->priv_data;
2966  int ret;
2967  av_log(s, AV_LOG_DEBUG,
2968  "Seek on stream index %d at timestamp %"PRId64" with flags %08x\n",
2969  stream_index, timestamp, flags);
2970  if ((ret = gen_seek(s, rt, timestamp)) < 0) {
2971  av_log(s, AV_LOG_ERROR,
2972  "Unable to send seek command on stream index %d at timestamp "
2973  "%"PRId64" with flags %08x\n",
2974  stream_index, timestamp, flags);
2975  return ret;
2976  }
2977  rt->flv_off = rt->flv_size;
2978  rt->state = STATE_SEEKING;
2979  return timestamp;
2980 }
2981 
2982 static int rtmp_pause(void *opaque, int pause)
2983 {
2984  URLContext *s = opaque;
2985  RTMPContext *rt = s->priv_data;
2986  int ret;
2987  av_log(s, AV_LOG_DEBUG, "Pause at timestamp %d\n",
2988  rt->last_timestamp);
2989  if ((ret = gen_pause(s, rt, pause, rt->last_timestamp)) < 0) {
2990  av_log(s, AV_LOG_ERROR, "Unable to send pause command at timestamp %d\n",
2991  rt->last_timestamp);
2992  return ret;
2993  }
2994  return 0;
2995 }
2996 
2997 static int rtmp_write(URLContext *s, const uint8_t *buf, int size)
2998 {
2999  RTMPContext *rt = s->priv_data;
3000  int size_temp = size;
3001  int pktsize, pkttype, copy;
3002  uint32_t ts;
3003  const uint8_t *buf_temp = buf;
3004  uint8_t c;
3005  int ret;
3006 
3007  do {
3008  if (rt->skip_bytes) {
3009  int skip = FFMIN(rt->skip_bytes, size_temp);
3010  buf_temp += skip;
3011  size_temp -= skip;
3012  rt->skip_bytes -= skip;
3013  continue;
3014  }
3015 
3016  if (rt->flv_header_bytes < RTMP_HEADER) {
3017  const uint8_t *header = rt->flv_header;
3018  int channel = RTMP_AUDIO_CHANNEL;
3019 
3020  copy = FFMIN(RTMP_HEADER - rt->flv_header_bytes, size_temp);
3021  bytestream_get_buffer(&buf_temp, rt->flv_header + rt->flv_header_bytes, copy);
3022  rt->flv_header_bytes += copy;
3023  size_temp -= copy;
3024  if (rt->flv_header_bytes < RTMP_HEADER)
3025  break;
3026 
3027  pkttype = bytestream_get_byte(&header);
3028  pktsize = bytestream_get_be24(&header);
3029  ts = bytestream_get_be24(&header);
3030  ts |= bytestream_get_byte(&header) << 24;
3031  bytestream_get_be24(&header);
3032  rt->flv_size = pktsize;
3033 
3034  if (pkttype == RTMP_PT_VIDEO)
3035  channel = RTMP_VIDEO_CHANNEL;
3036 
3037  if (((pkttype == RTMP_PT_VIDEO || pkttype == RTMP_PT_AUDIO) && ts == 0) ||
3038  pkttype == RTMP_PT_NOTIFY) {
3039  if ((ret = ff_rtmp_check_alloc_array(&rt->prev_pkt[1],
3040  &rt->nb_prev_pkt[1],
3041  channel)) < 0)
3042  return ret;
3043  // Force sending a full 12 bytes header by clearing the
3044  // channel id, to make it not match a potential earlier
3045  // packet in the same channel.
3046  rt->prev_pkt[1][channel].channel_id = 0;
3047  }
3048 
3049  //this can be a big packet, it's better to send it right here
3050  if ((ret = ff_rtmp_packet_create(&rt->out_pkt, channel,
3051  pkttype, ts, pktsize)) < 0)
3052  return ret;
3053 
3054  // If rt->listen, then we're running as a a server and should
3055  // use the ID that we've sent in Stream Begin and in the
3056  // _result to createStream.
3057  // Otherwise, we're running as a client and should use the ID
3058  // that we've received in the createStream from the server.
3059  rt->out_pkt.extra = (rt->listen) ? rt->nb_streamid : rt->stream_id;
3060  rt->flv_data = rt->out_pkt.data;
3061  }
3062 
3063  copy = FFMIN(rt->flv_size - rt->flv_off, size_temp);
3064  bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, copy);
3065  rt->flv_off += copy;
3066  size_temp -= copy;
3067 
3068  if (rt->flv_off == rt->flv_size) {
3069  rt->skip_bytes = 4;
3070 
3071  if (rt->out_pkt.type == RTMP_PT_NOTIFY) {
3072  // For onMetaData and |RtmpSampleAccess packets, we want
3073  // @setDataFrame prepended to the packet before it gets sent.
3074  // However, not all RTMP_PT_NOTIFY packets (e.g., onTextData
3075  // and onCuePoint).
3076  uint8_t commandbuffer[64];
3077  int stringlen = 0;
3078  GetByteContext gbc;
3079 
3080  bytestream2_init(&gbc, rt->flv_data, rt->flv_size);
3081  if (!ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer),
3082  &stringlen)) {
3083  if (!strcmp(commandbuffer, "onMetaData") ||
3084  !strcmp(commandbuffer, "|RtmpSampleAccess")) {
3085  uint8_t *ptr;
3086  if ((ret = av_reallocp(&rt->out_pkt.data, rt->out_pkt.size + 16)) < 0) {
3087  rt->flv_size = rt->flv_off = rt->flv_header_bytes = 0;
3088  return ret;
3089  }
3090  memmove(rt->out_pkt.data + 16, rt->out_pkt.data, rt->out_pkt.size);
3091  rt->out_pkt.size += 16;
3092  ptr = rt->out_pkt.data;
3093  ff_amf_write_string(&ptr, "@setDataFrame");
3094  }
3095  }
3096  }
3097 
3098  if ((ret = rtmp_send_packet(rt, &rt->out_pkt, 0)) < 0)
3099  return ret;
3100  rt->flv_size = 0;
3101  rt->flv_off = 0;
3102  rt->flv_header_bytes = 0;
3103  rt->flv_nb_packets++;
3104  }
3105  } while (buf_temp - buf < size);
3106 
3107  if (rt->flv_nb_packets < rt->flush_interval)
3108  return size;
3109  rt->flv_nb_packets = 0;
3110 
3111  /* set stream into nonblocking mode */
3112  rt->stream->flags |= AVIO_FLAG_NONBLOCK;
3113 
3114  /* try to read one byte from the stream */
3115  ret = ffurl_read(rt->stream, &c, 1);
3116 
3117  /* switch the stream back into blocking mode */
3118  rt->stream->flags &= ~AVIO_FLAG_NONBLOCK;
3119 
3120  if (ret == AVERROR(EAGAIN)) {
3121  /* no incoming data to handle */
3122  return size;
3123  } else if (ret < 0) {
3124  return ret;
3125  } else if (ret == 1) {
3126  RTMPPacket rpkt = { 0 };
3127 
3128  if ((ret = ff_rtmp_packet_read_internal(rt->stream, &rpkt,
3129  rt->in_chunk_size,
3130  &rt->prev_pkt[0],
3131  &rt->nb_prev_pkt[0], c)) <= 0)
3132  return ret;
3133 
3134  if ((ret = rtmp_parse_result(s, rt, &rpkt)) < 0)
3135  return ret;
3136 
3137  ff_rtmp_packet_destroy(&rpkt);
3138  }
3139 
3140  return size;
3141 }
3142 
3143 #define OFFSET(x) offsetof(RTMPContext, x)
3144 #define DEC AV_OPT_FLAG_DECODING_PARAM
3145 #define ENC AV_OPT_FLAG_ENCODING_PARAM
3146 
3147 static const AVOption rtmp_options[] = {
3148  {"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3149  {"rtmp_buffer", "Set buffer time in milliseconds. The default is 3000.", OFFSET(client_buffer_time), AV_OPT_TYPE_INT, {.i64 = 3000}, 0, INT_MAX, DEC|ENC},
3150  {"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3151  {"rtmp_flashver", "Version of the Flash plugin used to run the SWF player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3152  {"rtmp_flush_interval", "Number of packets flushed in the same request (RTMPT only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0, INT_MAX, ENC},
3153  {"rtmp_enhanced_codecs", "Specify the codec(s) to use in an enhanced rtmp live stream", OFFSET(enhanced_codecs), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, ENC},
3154  {"rtmp_live", "Specify that the media is a live stream.", OFFSET(live), AV_OPT_TYPE_INT, {.i64 = -2}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_live"},
3155  {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, .unit = "rtmp_live"},
3156  {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, .unit = "rtmp_live"},
3157  {"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, .unit = "rtmp_live"},
3158  {"rtmp_pageurl", "URL of the web page in which the media was embedded. By default no value will be sent.", OFFSET(pageurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
3159  {"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3160  {"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
3161  {"rtmp_swfhash", "SHA256 hash of the decompressed SWF file (32 bytes).", OFFSET(swfhash), AV_OPT_TYPE_BINARY, .flags = DEC},
3162  {"rtmp_swfsize", "Size of the decompressed SWF file, required for SWFVerification.", OFFSET(swfsize), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC},
3163  {"rtmp_swfurl", "URL of the SWF player. By default no value will be sent", OFFSET(swfurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3164  {"rtmp_swfverify", "URL to player swf file, compute hash/size automatically.", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
3165  {"rtmp_tcurl", "URL of the target stream. Defaults to proto://host[:port]/app.", OFFSET(tcurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3166  {"rtmp_listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_listen" },
3167  {"listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_listen" },
3168  {"tcp_nodelay", "Use TCP_NODELAY to disable Nagle's algorithm", OFFSET(tcp_nodelay), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC|ENC},
3169  {"timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1", OFFSET(listen_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_listen" },
3170  { NULL },
3171 };
3172 
3173 #define RTMP_PROTOCOL_0(flavor)
3174 #define RTMP_PROTOCOL_1(flavor) \
3175 static const AVClass flavor##_class = { \
3176  .class_name = #flavor, \
3177  .item_name = av_default_item_name, \
3178  .option = rtmp_options, \
3179  .version = LIBAVUTIL_VERSION_INT, \
3180 }; \
3181  \
3182 const URLProtocol ff_##flavor##_protocol = { \
3183  .name = #flavor, \
3184  .url_open2 = rtmp_open, \
3185  .url_read = rtmp_read, \
3186  .url_read_seek = rtmp_seek, \
3187  .url_read_pause = rtmp_pause, \
3188  .url_write = rtmp_write, \
3189  .url_close = rtmp_close, \
3190  .priv_data_size = sizeof(RTMPContext), \
3191  .flags = URL_PROTOCOL_FLAG_NETWORK, \
3192  .priv_data_class= &flavor##_class, \
3193 };
3194 #define RTMP_PROTOCOL_2(flavor, enabled) \
3195  RTMP_PROTOCOL_ ## enabled(flavor)
3196 #define RTMP_PROTOCOL_3(flavor, config) \
3197  RTMP_PROTOCOL_2(flavor, config)
3198 #define RTMP_PROTOCOL(flavor, uppercase) \
3199  RTMP_PROTOCOL_3(flavor, CONFIG_ ## uppercase ## _PROTOCOL)
3200 
3201 RTMP_PROTOCOL(rtmp, RTMP)
3202 RTMP_PROTOCOL(rtmpe, RTMPE)
3203 RTMP_PROTOCOL(rtmps, RTMPS)
3204 RTMP_PROTOCOL(rtmpt, RTMPT)
3205 RTMP_PROTOCOL(rtmpte, RTMPTE)
3206 RTMP_PROTOCOL(rtmpts, RTMPTS)
RTMP_PT_METADATA
@ RTMP_PT_METADATA
FLV metadata.
Definition: rtmppkt.h:61
RTMPContext::enhanced_codecs
char * enhanced_codecs
codec list in enhanced rtmp
Definition: rtmpproto.c:131
RTMPContext::subscribe
char * subscribe
name of live stream to subscribe
Definition: rtmpproto.c:118
flags
const SwsFlags flags[]
Definition: swscale.c:61
ffurl_seek
static int64_t ffurl_seek(URLContext *h, int64_t pos, int whence)
Change the position that will be used by the next read/write operation on the resource accessed by h.
Definition: url.h:222
rtmp_receive_hs_packet
static int rtmp_receive_hs_packet(RTMPContext *rt, uint32_t *first_int, uint32_t *second_int, char *arraydata, int size)
Definition: rtmpproto.c:1422
handle_window_ack_size
static int handle_window_ack_size(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:1624
STATE_SEEKING
@ STATE_SEEKING
client has started the seek operation. Back on STATE_PLAYING when the time comes
Definition: rtmpproto.c:66
AMF_END_OF_OBJECT
#define AMF_END_OF_OBJECT
Definition: flv.h:53
ff_rtmpe_update_keystream
int ff_rtmpe_update_keystream(URLContext *h)
Update the keystream and set RC4 keys for encryption.
Definition: rtmpcrypt.c:223
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:216
read_number_result
static int read_number_result(RTMPPacket *pkt, double *number)
Read the AMF_NUMBER response ("_result") to a function call (e.g.
Definition: rtmpproto.c:2062
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
LIBAVFORMAT_IDENT
#define LIBAVFORMAT_IDENT
Definition: version.h:45
get_packet
static int get_packet(URLContext *s, int for_header)
Interact with the server by receiving and sending RTMP packets until there is some significant data (...
Definition: rtmpproto.c:2453
handle_invoke_result
static int handle_invoke_result(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:2092
level
uint8_t level
Definition: svq3.c:208
RTMPContext::in_chunk_size
int in_chunk_size
size of the chunks incoming RTMP packets are divided into
Definition: rtmpproto.c:84
RTMPContext::bytes_read
uint64_t bytes_read
number of bytes read from server
Definition: rtmpproto.c:99
RTMP_HANDSHAKE_PACKET_SIZE
#define RTMP_HANDSHAKE_PACKET_SIZE
Definition: rtmp.h:30
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
RTMPContext::client_buffer_time
int client_buffer_time
client buffer time in ms
Definition: rtmpproto.c:120
RTMPContext::flv_header_bytes
int flv_header_bytes
number of initialized bytes in flv_header
Definition: rtmpproto.c:107
RTMP_NETWORK_CHANNEL
@ RTMP_NETWORK_CHANNEL
channel for network-related messages (bandwidth report, ping, etc)
Definition: rtmppkt.h:37
RTMP_PT_BYTES_READ
@ RTMP_PT_BYTES_READ
number of bytes read
Definition: rtmppkt.h:49
RTMPContext::app
char * app
name of application
Definition: rtmpproto.c:89
gen_swf_verification
static int gen_swf_verification(URLContext *s, RTMPContext *rt)
Generate SWF verification message and send it to the server.
Definition: rtmpproto.c:940
RTMP_CLIENT_VER3
#define RTMP_CLIENT_VER3
Definition: rtmp.h:39
rtmp_close
static int rtmp_close(URLContext *h)
Definition: rtmpproto.c:2538
av_lfg_init
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:32
RTMPPacket::type
RTMPPacketType type
packet payload type
Definition: rtmppkt.h:79
GetByteContext
Definition: bytestream.h:33
strtod
double strtod(const char *, char **)
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:57
AVIO_FLAG_READ_WRITE
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:619
RTMPContext::last_bytes_read
uint64_t last_bytes_read
number of bytes read last reported to server
Definition: rtmpproto.c:100
write_begin
static int write_begin(URLContext *s)
Definition: rtmpproto.c:1876
RTMPContext::out_pkt
RTMPPacket out_pkt
rtmp packet, created from flv a/v or metadata (for output)
Definition: rtmpproto.c:97
RTMP_PT_NOTIFY
@ RTMP_PT_NOTIFY
some notification
Definition: rtmppkt.h:58
FLV_HEADER_FLAG_HASVIDEO
@ FLV_HEADER_FLAG_HASVIDEO
Definition: flv.h:61
int64_t
long long int64_t
Definition: coverity.c:34
gen_buffer_time
static int gen_buffer_time(URLContext *s, RTMPContext *rt)
Generate client buffer time and send it to the server.
Definition: rtmpproto.c:788
ffurl_write
static int ffurl_write(URLContext *h, const uint8_t *buf, int size)
Write size bytes from buf to the resource accessed by h.
Definition: url.h:202
gen_fcpublish_stream
static int gen_fcpublish_stream(URLContext *s, RTMPContext *rt)
Generate 'FCPublish' call and send it to the server.
Definition: rtmpproto.c:667
RTMPContext::pageurl
char * pageurl
url of the web page
Definition: rtmpproto.c:117
out_size
int out_size
Definition: movenc.c:56
STATE_RECEIVING
@ STATE_RECEIVING
received a publish command (for input)
Definition: rtmpproto.c:68
rtmp_parse_result
static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt)
Parse received packet and possibly perform some action depending on the packet contents.
Definition: rtmpproto.c:2347
rtmp_calc_swf_verification
static int rtmp_calc_swf_verification(URLContext *s, RTMPContext *rt, uint8_t *buf)
Definition: rtmpproto.c:1088
URLContext::max_packet_size
int max_packet_size
if non zero, the stream is packetized with this max packet size
Definition: url.h:41
AVPacket::data
uint8_t * data
Definition: packet.h:535
AVOption
AVOption.
Definition: opt.h:429
AVSEEK_SIZE
#define AVSEEK_SIZE
ORing this as the "whence" parameter to a seek function causes it to return the filesize without seek...
Definition: avio.h:468
data
const char data[16]
Definition: mxf.c:149
ff_amf_write_field_name
void ff_amf_write_field_name(uint8_t **dst, const char *str)
Write string used as field name in AMF object to buffer.
Definition: rtmppkt.c:78
RTMPContext::nb_tracked_methods
int nb_tracked_methods
number of tracked methods
Definition: rtmpproto.c:124
AV_LOG_VERBOSE
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:226
ff_amf_match_string
int ff_amf_match_string(const uint8_t *data, int size, const char *str)
Match AMF string with a NULL-terminated string.
Definition: rtmppkt.c:692
RTMP_PT_WINDOW_ACK_SIZE
@ RTMP_PT_WINDOW_ACK_SIZE
window acknowledgement size
Definition: rtmppkt.h:51
ffurl_close
int ffurl_close(URLContext *h)
Definition: avio.c:612
RTMPContext::flv_data
uint8_t * flv_data
buffer with data for demuxer
Definition: rtmpproto.c:93
RTMPContext::state
ClientState state
current state
Definition: rtmpproto.c:91
gen_pong
static int gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt)
Generate ping reply and send it to the server.
Definition: rtmpproto.c:914
STATE_PUBLISHING
@ STATE_PUBLISHING
client has started sending multimedia data to server (for output)
Definition: rtmpproto.c:67
RTMPContext::listen_timeout
int listen_timeout
listen timeout to wait for new connections
Definition: rtmpproto.c:127
AVDictionary
Definition: dict.c:32
STATE_FCPUBLISH
@ STATE_FCPUBLISH
client FCPublishing stream (for output)
Definition: rtmpproto.c:64
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
RTMPPacket::extra
uint32_t extra
probably an additional channel ID used during streaming data
Definition: rtmppkt.h:82
intfloat.h
RTMPContext::max_sent_unacked
int max_sent_unacked
max unacked sent bytes
Definition: rtmpproto.c:119
ff_rtmp_packet_read_internal
int ff_rtmp_packet_read_internal(URLContext *h, RTMPPacket *p, int chunk_size, RTMPPacket **prev_pkt, int *nb_prev_pkt, uint8_t hdr)
Read internal RTMP packet sent by the server.
Definition: rtmppkt.c:295
hash
uint8_t hash[HASH_SIZE]
Definition: movenc.c:58
gen_pause
static int gen_pause(URLContext *s, RTMPContext *rt, int pause, uint32_t timestamp)
Generate a pause packet that either pauses or unpauses the current stream.
Definition: rtmpproto.c:860
av_strlcatf
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:103
TCURL_MAX_LENGTH
#define TCURL_MAX_LENGTH
Definition: rtmpproto.c:55
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
ff_amf_write_bool
void ff_amf_write_bool(uint8_t **dst, int val)
Write boolean value in AMF format to buffer.
Definition: rtmppkt.c:30
RTMPContext::conn
char * conn
append arbitrary AMF data to the Connect message
Definition: rtmpproto.c:90
av_get_random_seed
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:196
RTMPContext::live
int live
0: recorded, -1: live, -2: both
Definition: rtmpproto.c:88
write_status
static int write_status(URLContext *s, RTMPPacket *pkt, const char *status, const char *description, const char *details)
Definition: rtmpproto.c:1902
RTMP_VIDEO_CHANNEL
@ RTMP_VIDEO_CHANNEL
channel for video data
Definition: rtmppkt.h:40
bytestream2_skip
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:168
gen_seek
static int gen_seek(URLContext *s, RTMPContext *rt, int64_t timestamp)
Definition: rtmpproto.c:834
add_tracked_method
static int add_tracked_method(RTMPContext *rt, const char *name, int id)
Definition: rtmpproto.c:166
AV_OPT_TYPE_BINARY
@ AV_OPT_TYPE_BINARY
Underlying C type is a uint8_t* that is either NULL or points to an array allocated with the av_mallo...
Definition: opt.h:286
TrackedMethod::id
int id
Definition: rtmpproto.c:75
TrackedMethod::name
char * name
Definition: rtmpproto.c:74
fail
#define fail()
Definition: checkasm.h:196
ff_rtmp_packet_read
int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p, int chunk_size, RTMPPacket **prev_pkt, int *nb_prev_pkt)
Read RTMP packet sent by the server.
Definition: rtmppkt.c:156
update_offset
static int update_offset(RTMPContext *rt, int size)
Definition: rtmpproto.c:2232
md5
struct AVMD5 * md5
Definition: movenc.c:57
inflate
static void inflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord, int maxc)
Definition: vf_neighbor.c:194
handle_chunk_size
static int handle_chunk_size(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:1537
RTMPContext::nb_invokes
int nb_invokes
keeps track of invoke messages
Definition: rtmpproto.c:108
RTMPContext::stream_id
int stream_id
ID assigned by the server for the stream.
Definition: rtmpproto.c:92
RTMP_HEADER
#define RTMP_HEADER
Definition: rtmpproto.c:58
gen_release_stream
static int gen_release_stream(URLContext *s, RTMPContext *rt)
Generate 'releaseStream' call and send it to the server.
Definition: rtmpproto.c:643
RTMPContext::skip_bytes
int skip_bytes
number of bytes to skip from the input FLV stream in the next write call
Definition: rtmpproto.c:102
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
pts
static int64_t pts
Definition: transcode_aac.c:644
RTMPContext::nb_prev_pkt
int nb_prev_pkt[2]
number of elements in prev_pkt
Definition: rtmpproto.c:83
ff_amf_get_string
int ff_amf_get_string(GetByteContext *bc, uint8_t *str, int strsize, int *length)
Get AMF string value.
Definition: rtmppkt.c:102
gen_publish
static int gen_publish(URLContext *s, RTMPContext *rt)
Generate 'publish' call and send it to the server.
Definition: rtmpproto.c:887
rtmp_pause
static int rtmp_pause(void *opaque, int pause)
Definition: rtmpproto.c:2982
ff_data_to_hex
char * ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase)
Write hexadecimal string corresponding to given binary data.
Definition: utils.c:451
AVMD5
Definition: md5.c:42
append_flv_data
static int append_flv_data(RTMPContext *rt, RTMPPacket *pkt, int skip)
Definition: rtmpproto.c:2251
free_tracked_methods
static void free_tracked_methods(RTMPContext *rt)
Definition: rtmpproto.c:221
signature
static const char signature[]
Definition: ipmovie.c:592
gen_fcunpublish_stream
static int gen_fcunpublish_stream(URLContext *s, RTMPContext *rt)
Generate 'FCUnpublish' call and send it to the server.
Definition: rtmpproto.c:691
RTMPContext::flv_off
int flv_off
number of bytes read from current buffer
Definition: rtmpproto.c:95
description
Tag description
Definition: snow.txt:206
rnd
#define rnd()
Definition: checkasm.h:180
find_tracked_method
static int find_tracked_method(URLContext *s, RTMPPacket *pkt, int offset, char **tracked_method)
Definition: rtmpproto.c:196
AV_LOG_TRACE
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:236
pkt
AVPacket * pkt
Definition: movenc.c:60
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:210
rtmp_send_packet
static int rtmp_send_packet(RTMPContext *rt, RTMPPacket *pkt, int track)
Definition: rtmpproto.c:232
ff_amf_write_string
void ff_amf_write_string(uint8_t **dst, const char *str)
Write string in AMF format to buffer.
Definition: rtmppkt.c:48
RTMP_CLIENT_VER2
#define RTMP_CLIENT_VER2
Definition: rtmp.h:38
bytestream2_init_writer
static av_always_inline void bytestream2_init_writer(PutByteContext *p, uint8_t *buf, int buf_size)
Definition: bytestream.h:147
handle_notify
static int handle_notify(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:2284
ffurl_open_whitelist
int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char *blacklist, URLContext *parent)
Create an URLContext for accessing to the resource indicated by url, and open it.
Definition: avio.c:363
rtmp_send_hs_packet
static int rtmp_send_hs_packet(RTMPContext *rt, uint32_t first_int, uint32_t second_int, char *arraydata, int size)
Definition: rtmpproto.c:1443
RTMPS_DEFAULT_PORT
#define RTMPS_DEFAULT_PORT
Definition: rtmp.h:28
s
#define s(width, name)
Definition: cbs_vp9.c:198
RTMP_SYSTEM_CHANNEL
@ RTMP_SYSTEM_CHANNEL
channel for sending server control messages
Definition: rtmppkt.h:38
av_lfg_get
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
Definition: lfg.h:53
encrypted
static const uint8_t encrypted[]
Definition: aes_ctr.c:31
RTMPContext::swfhash
char * swfhash
SHA256 hash of the decompressed SWF file (32 bytes)
Definition: rtmpproto.c:111
bytestream2_put_buffer
static av_always_inline unsigned int bytestream2_put_buffer(PutByteContext *p, const uint8_t *src, unsigned int size)
Definition: bytestream.h:286
RTMPContext::flashver
char * flashver
version of the flash plugin
Definition: rtmpproto.c:110
GetByteContext::buffer
const uint8_t * buffer
Definition: bytestream.h:34
lfg.h
URLContext::flags
int flags
Definition: url.h:40
ff_url_join
int ff_url_join(char *str, int size, const char *proto, const char *authorization, const char *hostname, int port, const char *fmt,...)
Definition: url.c:40
AVIO_FLAG_WRITE
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:618
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:231
RTMPContext::listen
int listen
listen mode flag
Definition: rtmpproto.c:126
do_adobe_auth
static int do_adobe_auth(RTMPContext *rt, const char *user, const char *salt, const char *opaque, const char *challenge)
Definition: rtmpproto.c:1650
RTMP_CLIENT_PLATFORM
#define RTMP_CLIENT_PLATFORM
emulated Flash client version - 9.0.124.2 on Linux
Definition: rtmp.h:36
field
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this field
Definition: writing_filters.txt:78
RTMPContext::username
char username[50]
Definition: rtmpproto.c:132
RTMPContext::has_video
int has_video
presence of video data
Definition: rtmpproto.c:104
command
static int command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Definition: vf_drawtext.c:1187
rtmp_server_key
static const uint8_t rtmp_server_key[]
Key used for RTMP server digest signing.
Definition: rtmpproto.c:152
RTMPContext::receive_report_size
uint32_t receive_report_size
number of bytes after which we should report the number of received bytes to the peer
Definition: rtmpproto.c:98
RTMP_PKTDATA_DEFAULT_SIZE
#define RTMP_PKTDATA_DEFAULT_SIZE
Definition: rtmpproto.c:57
handle_invoke_status
static int handle_invoke_status(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:2164
if
if(ret)
Definition: filter_design.txt:179
RTMP_CTRL_ABORT_MESSAGE
#define RTMP_CTRL_ABORT_MESSAGE
Definition: rtmpproto.c:453
RTMPContext::received_metadata
int received_metadata
Indicates if we have received metadata about the streams.
Definition: rtmpproto.c:105
internal.h
opts
AVDictionary * opts
Definition: movenc.c:51
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:76
ff_rtmp_calc_digest
int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap, const uint8_t *key, int keylen, uint8_t *dst)
Calculate HMAC-SHA2 digest for RTMP handshake packets.
Definition: rtmpdigest.c:34
NULL
#define NULL
Definition: coverity.c:32
av_opt_set_bin
int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
Definition: opt.c:895
gen_connect
static int gen_connect(URLContext *s, RTMPContext *rt)
Generate 'connect' call and send it to the server.
Definition: rtmpproto.c:323
RTMPPacket
structure for holding RTMP packets
Definition: rtmppkt.h:77
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
ff_rtmpe_gen_pub_key
int ff_rtmpe_gen_pub_key(URLContext *h, uint8_t *buf)
Initialize the Diffie-Hellmann context and generate the public key.
Definition: rtmpcrypt.c:122
ff_amf_write_object_end
void ff_amf_write_object_end(uint8_t **dst)
Write marker for end of AMF object to buffer.
Definition: rtmppkt.c:84
rtmp_seek
static int64_t rtmp_seek(void *opaque, int stream_index, int64_t timestamp, int flags)
Definition: rtmpproto.c:2961
ff_rtmp_packet_destroy
void ff_rtmp_packet_destroy(RTMPPacket *pkt)
Free RTMP packet.
Definition: rtmppkt.c:431
RTMPContext::swfurl
char * swfurl
url of the swf player
Definition: rtmpproto.c:114
RTMPContext::tcp_nodelay
int tcp_nodelay
Use TCP_NODELAY to disable Nagle's algorithm if set to 1.
Definition: rtmpproto.c:130
flv.h
do_llnw_auth
static int do_llnw_auth(RTMPContext *rt, const char *user, const char *nonce)
Definition: rtmpproto.c:1689
RTMP_PT_USER_CONTROL
@ RTMP_PT_USER_CONTROL
user control
Definition: rtmppkt.h:50
rtmp_player_key
static const uint8_t rtmp_player_key[]
Client key used for digest signing.
Definition: rtmpproto.c:141
gen_delete_stream
static int gen_delete_stream(URLContext *s, RTMPContext *rt)
Generate 'deleteStream' call and send it to the server.
Definition: rtmpproto.c:740
ff_rtmp_packet_write
int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt, int chunk_size, RTMPPacket **prev_pkt_ptr, int *nb_prev_pkt)
Send RTMP packet to the server.
Definition: rtmppkt.c:310
RTMPContext::tcurl
char * tcurl
url of the target stream
Definition: rtmpproto.c:109
RTMPPacket::size
int size
packet payload size
Definition: rtmppkt.h:84
rtmp_handshake_imprint_with_digest
static int rtmp_handshake_imprint_with_digest(uint8_t *buf, int encrypted)
Put HMAC-SHA2 digest of packet data (except for the bytes where this digest will be stored) into that...
Definition: rtmpproto.c:1045
RTMP_CLIENT_VER1
#define RTMP_CLIENT_VER1
Definition: rtmp.h:37
base64.h
index
int index
Definition: gxfenc.c:90
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
handle_user_control
static int handle_user_control(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:1570
send_invoke_response
static int send_invoke_response(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:1944
bytestream2_get_bytes_left
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:158
RTMPContext::swfhash_len
int swfhash_len
length of the SHA256 hash
Definition: rtmpproto.c:112
AV_WB32
#define AV_WB32(p, v)
Definition: intreadwrite.h:415
TrackedMethod
Definition: rtmpproto.c:73
PutByteContext
Definition: bytestream.h:37
RTMP_DEFAULT_PORT
#define RTMP_DEFAULT_PORT
Definition: rtmp.h:27
RTMPContext::password
char password[50]
Definition: rtmpproto.c:133
rtmp_write_amf_data
static int rtmp_write_amf_data(URLContext *s, char *param, uint8_t **p)
Definition: rtmpproto.c:260
RTMPContext
protocol handler context
Definition: rtmpproto.c:79
AVLFG
Context structure for the Lagged Fibonacci PRNG.
Definition: lfg.h:33
DEC
#define DEC
Definition: rtmpproto.c:3144
FLASHVER_MAX_LENGTH
#define FLASHVER_MAX_LENGTH
Definition: rtmpproto.c:56
AVPacket::size
int size
Definition: packet.h:536
gen_create_stream
static int gen_create_stream(URLContext *s, RTMPContext *rt)
Generate 'createStream' call and send it to the server.
Definition: rtmpproto.c:715
copy
static void copy(const float *p1, float *p2, const int length)
Definition: vf_vaguedenoiser.c:186
read_connect
static int read_connect(URLContext *s, RTMPContext *rt)
Definition: rtmpproto.c:455
RTMP_PROTOCOL
#define RTMP_PROTOCOL(flavor, uppercase)
Definition: rtmpproto.c:3198
gen_bytes_read
static int gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts)
Generate report on bytes read so far and send it to the server.
Definition: rtmpproto.c:1001
rtmp_write
static int rtmp_write(URLContext *s, const uint8_t *buf, int size)
Definition: rtmpproto.c:2997
ff_amf_get_field_value
int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end, const uint8_t *name, uint8_t *dst, int dst_size)
Retrieve value of given AMF object field in string form.
Definition: rtmppkt.c:560
RTMPContext::out_chunk_size
int out_chunk_size
size of the chunks outgoing RTMP packets are divided into
Definition: rtmpproto.c:85
RTMP_PT_INVOKE
@ RTMP_PT_INVOKE
invoke some stream action
Definition: rtmppkt.h:60
size
int size
Definition: twinvq_data.h:10344
av_reallocp
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
Definition: mem.c:188
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
RTMPContext::tracked_methods
TrackedMethod * tracked_methods
tracked methods buffer
Definition: rtmpproto.c:123
ff_rtmp_calc_digest_pos
int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val, int add_val)
Calculate digest position for RTMP handshake packets.
Definition: rtmpdigest.c:57
rtmp_open
static int rtmp_open(URLContext *s, const char *uri, int flags, AVDictionary **opts)
Open RTMP connection and verify that the stream can be played.
Definition: rtmpproto.c:2637
rtmpcrypt.h
SERVER_KEY_OPEN_PART_LEN
#define SERVER_KEY_OPEN_PART_LEN
length of partial key used for first server digest signing
Definition: rtmpproto.c:150
rtmp_options
static const AVOption rtmp_options[]
Definition: rtmpproto.c:3147
header
static const uint8_t header[24]
Definition: sdr2.c:68
ENC
#define ENC
Definition: rtmpproto.c:3145
av_reallocp_array
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate an array through a pointer to a pointer.
Definition: mem.c:225
ff_amf_write_null
void ff_amf_write_null(uint8_t **dst)
Write AMF NULL value to buffer.
Definition: rtmppkt.c:68
RTMPContext::flv_nb_packets
int flv_nb_packets
number of flv packets published
Definition: rtmpproto.c:96
ff_rtmp_packet_dump
void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p)
Print information and contents of RTMP packet.
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
RTMPContext::swfverify
char * swfverify
URL to player swf file, compute hash/size automatically.
Definition: rtmpproto.c:115
RTMPContext::swfsize
int swfsize
size of the decompressed SWF file
Definition: rtmpproto.c:113
RTMPContext::tracked_methods_size
int tracked_methods_size
size of the tracked methods buffer
Definition: rtmpproto.c:125
ff_rtmp_packet_create
int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type, int timestamp, int size)
Create new RTMP packet with given attributes.
Definition: rtmppkt.c:413
APP_MAX_LENGTH
#define APP_MAX_LENGTH
Definition: rtmpproto.c:54
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:221
ff_rtmp_check_alloc_array
int ff_rtmp_check_alloc_array(RTMPPacket **prev_pkt, int *nb_prev_pkt, int channel)
Enlarge the prev_pkt array to fit the given channel.
Definition: rtmppkt.c:135
av_double2int
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
rtmppkt.h
bytestream_put_buffer
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:372
av_md5_init
void av_md5_init(AVMD5 *ctx)
Initialize MD5 hashing.
Definition: md5.c:143
AV_BASE64_SIZE
#define AV_BASE64_SIZE(x)
Calculate the output size needed to base64-encode x bytes to a null-terminated string.
Definition: base64.h:66
URLContext
Definition: url.h:35
rtmp_validate_digest
static int rtmp_validate_digest(uint8_t *buf, int off)
Verify that the received server response has the expected digest value.
Definition: rtmpproto.c:1070
FLV_HEADER_FLAG_HASAUDIO
@ FLV_HEADER_FLAG_HASAUDIO
Definition: flv.h:62
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
rtmp_calc_swfhash
static int rtmp_calc_swfhash(URLContext *s)
Definition: rtmpproto.c:1156
gen_check_bw
static int gen_check_bw(URLContext *s, RTMPContext *rt)
Generate check bandwidth message and send it to the server.
Definition: rtmpproto.c:980
handle_connect_error
static int handle_connect_error(URLContext *s, const char *desc)
Definition: rtmpproto.c:1746
bytestream2_skip_p
static av_always_inline void bytestream2_skip_p(PutByteContext *p, unsigned int size)
Definition: bytestream.h:180
RTMPContext::flush_interval
int flush_interval
number of packets flushed in the same request (RTMPT only)
Definition: rtmpproto.c:121
RTMPPacket::timestamp
uint32_t timestamp
packet full timestamp
Definition: rtmppkt.h:80
gen_play
static int gen_play(URLContext *s, RTMPContext *rt)
Generate 'play' call and send it to the server, then ping the server to start actual playing.
Definition: rtmpproto.c:810
RTMPContext::playpath
char * playpath
stream identifier to play (with possible "mp4:" prefix)
Definition: rtmpproto.c:87
md5.h
RTMP_CLIENT_VER4
#define RTMP_CLIENT_VER4
Definition: rtmp.h:40
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
av_url_split
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
Definition: utils.c:354
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
OFFSET
#define OFFSET(x)
Definition: rtmpproto.c:3143
url.h
RTMPContext::do_reconnect
int do_reconnect
Definition: rtmpproto.c:135
del_tracked_method
static void del_tracked_method(RTMPContext *rt, int index)
Definition: rtmpproto.c:189
handle_set_peer_bw
static int handle_set_peer_bw(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:1597
len
int len
Definition: vorbis_enc_data.h:426
GetByteContext::buffer_end
const uint8_t * buffer_end
Definition: bytestream.h:34
av_md5_final
void av_md5_final(AVMD5 *ctx, uint8_t *dst)
Finish hashing and output digest value.
Definition: md5.c:188
PLAYER_KEY_OPEN_PART_LEN
#define PLAYER_KEY_OPEN_PART_LEN
length of partial key used for first client digest signing
Definition: rtmpproto.c:139
rtmp.h
RTMP_PT_SET_PEER_BW
@ RTMP_PT_SET_PEER_BW
peer bandwidth
Definition: rtmppkt.h:52
AMF_DATA_TYPE_MIXEDARRAY
@ AMF_DATA_TYPE_MIXEDARRAY
Definition: flv.h:175
handle_invoke
static int handle_invoke(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:2201
AMF_DATA_TYPE_STRING
@ AMF_DATA_TYPE_STRING
Definition: flv.h:170
bytestream_get_buffer
static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b, uint8_t *dst, unsigned int size)
Definition: bytestream.h:363
version.h
ff_amf_write_string2
void ff_amf_write_string2(uint8_t **dst, const char *str1, const char *str2)
Write a string consisting of two parts in AMF format to a buffer.
Definition: rtmppkt.c:55
ffurl_closep
int ffurl_closep(URLContext **hh)
Close the resource accessed by the URLContext h, and free the memory used by it.
Definition: avio.c:589
ret
ret
Definition: filter_design.txt:187
RTMPContext::has_audio
int has_audio
presence of audio data
Definition: rtmpproto.c:103
RTMPContext::prev_pkt
RTMPPacket * prev_pkt[2]
packet history used when reading and sending packets ([0] for reading, [1] for writing)
Definition: rtmpproto.c:82
av_strlcat
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes,...
Definition: avstring.c:95
RTMPContext::nb_streamid
int nb_streamid
The next stream id to return on createStream calls.
Definition: rtmpproto.c:128
avformat.h
RTMPContext::encrypted
int encrypted
use an encrypted connection (RTMPE only)
Definition: rtmpproto.c:122
network.h
id
enum AVCodecID id
Definition: dts2pts.c:367
ff_amf_read_number
int ff_amf_read_number(GetByteContext *bc, double *val)
Read AMF number value.
Definition: rtmppkt.c:92
AV_DICT_MATCH_CASE
#define AV_DICT_MATCH_CASE
Only get an entry with exact-case key match.
Definition: dict.h:74
STATE_SENDING
@ STATE_SENDING
received a play command (for output)
Definition: rtmpproto.c:69
ff_amf_write_number
void ff_amf_write_number(uint8_t **dst, double val)
Write number in AMF format to buffer.
Definition: rtmppkt.c:36
RTMPPacket::channel_id
int channel_id
RTMP channel ID (nothing to do with audio/video channels though)
Definition: rtmppkt.h:78
ff_amf_write_array_start
void ff_amf_write_array_start(uint8_t **dst, uint32_t length)
Write marker and length for AMF array to buffer.
Definition: rtmppkt.c:42
status
ov_status_e status
Definition: dnn_backend_openvino.c:100
gen_window_ack_size
static int gen_window_ack_size(URLContext *s, RTMPContext *rt)
Generate window acknowledgement size message and send it to the server.
Definition: rtmpproto.c:961
random_seed.h
ff_rtmpe_encrypt_sig
void ff_rtmpe_encrypt_sig(URLContext *h, uint8_t *sig, const uint8_t *digest, int type)
Encrypt the signature.
Definition: rtmpcrypt.c:207
ff_rtmpe_compute_secret_key
int ff_rtmpe_compute_secret_key(URLContext *h, const uint8_t *serverdata, const uint8_t *clientdata, int type)
Compute the shared secret key and initialize the RC4 encryption.
Definition: rtmpcrypt.c:145
buffer
the frame and frame reference mechanism is intended to as much as expensive copies of that data while still allowing the filters to produce correct results The data is stored in buffers represented by AVFrame structures Several references can point to the same frame buffer
Definition: filter_design.txt:49
ClientState
ClientState
RTMP protocol handler state.
Definition: rtmpproto.c:61
RTMPPacket::data
uint8_t * data
packet payload
Definition: rtmppkt.h:83
av_md5_alloc
struct AVMD5 * av_md5_alloc(void)
Allocate an AVMD5 context.
Definition: md5.c:50
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Underlying C type is int.
Definition: opt.h:259
FLV_TAG_TYPE_META
@ FLV_TAG_TYPE_META
Definition: flv.h:68
ff_amf_write_object_start
void ff_amf_write_object_start(uint8_t **dst)
Write marker for AMF object to buffer.
Definition: rtmppkt.c:73
RTMPContext::is_input
int is_input
input/output flag
Definition: rtmpproto.c:86
gen_fcsubscribe_stream
static int gen_fcsubscribe_stream(URLContext *s, RTMPContext *rt, const char *subscribe)
Definition: rtmpproto.c:1017
temp
else temp
Definition: vf_mcdeint.c:271
av_base64_encode
char * av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size)
Encode data to base64 and null-terminate.
Definition: base64.c:147
av_md5_update
void av_md5_update(AVMD5 *ctx, const uint8_t *src, size_t len)
Update hash value.
Definition: md5.c:153
RTMPContext::duration
double duration
Duration of the stream in seconds as returned by the server (only valid if non-zero)
Definition: rtmpproto.c:129
RTMPContext::swfverification
char swfverification[42]
hash of the SWF verification
Definition: rtmpproto.c:116
RTMPContext::flv_header
uint8_t flv_header[RTMP_HEADER]
partial incoming flv packet header
Definition: rtmpproto.c:106
RTMPContext::last_timestamp
uint32_t last_timestamp
last timestamp received in a packet
Definition: rtmpproto.c:101
AVIO_FLAG_READ
#define AVIO_FLAG_READ
read-only
Definition: avio.h:617
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:272
desc
const char * desc
Definition: libsvtav1.c:79
mem.h
RTMPContext::stream
URLContext * stream
TCP stream used in interactions with RTMP server.
Definition: rtmpproto.c:81
AMF_DATA_TYPE_NUMBER
@ AMF_DATA_TYPE_NUMBER
Definition: flv.h:168
ffurl_read_complete
int ffurl_read_complete(URLContext *h, unsigned char *buf, int size)
Read as many bytes as possible (up to size), calling the read function multiple times if necessary.
Definition: avio.c:558
STATE_PLAYING
@ STATE_PLAYING
client has started receiving multimedia data from server
Definition: rtmpproto.c:65
STATE_START
@ STATE_START
client has not done anything yet
Definition: rtmpproto.c:62
RTMPContext::auth_params
char auth_params[500]
Definition: rtmpproto.c:134
RTMPContext::auth_tried
int auth_tried
Definition: rtmpproto.c:136
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
gen_get_stream_length
static int gen_get_stream_length(URLContext *s, RTMPContext *rt)
Generate 'getStreamLength' call and send it to the server.
Definition: rtmpproto.c:766
handle_metadata
static int handle_metadata(RTMPContext *rt, RTMPPacket *pkt)
Definition: rtmpproto.c:2392
AVIO_FLAG_NONBLOCK
#define AVIO_FLAG_NONBLOCK
Use non-blocking mode.
Definition: avio.h:636
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:86
rtmp_handshake
static int rtmp_handshake(URLContext *s, RTMPContext *rt)
Perform handshake with the server by means of exchanging pseudorandom data signed with HMAC-SHA2 dige...
Definition: rtmpproto.c:1243
bytestream.h
bytestream2_init
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:137
av_strlcpy
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:85
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
STATE_STOPPED
@ STATE_STOPPED
the broadcast has been stopped
Definition: rtmpproto.c:70
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
STATE_HANDSHAKED
@ STATE_HANDSHAKED
client has performed handshake
Definition: rtmpproto.c:63
handle_invoke_error
static int handle_invoke_error(URLContext *s, RTMPPacket *pkt)
Definition: rtmpproto.c:1837
h
h
Definition: vp9dsp_template.c:2070
rtmp_server_handshake
static int rtmp_server_handshake(URLContext *s, RTMPContext *rt)
rtmp handshake server side
Definition: rtmpproto.c:1463
RTMPContext::flv_size
int flv_size
current buffer size
Definition: rtmpproto.c:94
RTMP_AUDIO_CHANNEL
@ RTMP_AUDIO_CHANNEL
channel for audio data
Definition: rtmppkt.h:39
avstring.h
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Underlying C type is a uint8_t* that is either NULL or points to a C string allocated with the av_mal...
Definition: opt.h:276
RTMP_PT_AUDIO
@ RTMP_PT_AUDIO
audio packet
Definition: rtmppkt.h:53
rtmp_read
static int rtmp_read(URLContext *s, uint8_t *buf, int size)
Definition: rtmpproto.c:2934
ff_amf_read_null
int ff_amf_read_null(GetByteContext *bc)
Read AMF NULL value.
Definition: rtmppkt.c:128
inject_fake_duration_metadata
static int inject_fake_duration_metadata(RTMPContext *rt)
Insert a fake onMetadata packet into the FLV stream to notify the FLV demuxer about the duration of t...
Definition: rtmpproto.c:2574
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Special option type for declaring named constants.
Definition: opt.h:299
fourcc
uint32_t fourcc
Definition: vaapi_decode.c:263
snprintf
#define snprintf
Definition: snprintf.h:34
RTMP_PT_VIDEO
@ RTMP_PT_VIDEO
video packet
Definition: rtmppkt.h:54
RTMP_SOURCE_CHANNEL
@ RTMP_SOURCE_CHANNEL
channel for a/v invokes
Definition: rtmppkt.h:41
skip
static void BS_FUNC() skip(BSCTX *bc, unsigned int n)
Skip n bits in the buffer.
Definition: bitstream_template.h:375
channel
channel
Definition: ebur128.h:39
ff_amf_tag_size
int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end)
Calculate number of bytes taken by first AMF entry in data.
Definition: rtmppkt.c:492
AV_RB16
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:98
av_realloc
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:155
ffurl_read
static int ffurl_read(URLContext *h, uint8_t *buf, int size)
Read up to size bytes from the resource accessed by h, and store the read bytes in buf.
Definition: url.h:181
RTMP_PT_CHUNK_SIZE
@ RTMP_PT_CHUNK_SIZE
chunk size change
Definition: rtmppkt.h:48
ff_amf_read_string
int ff_amf_read_string(GetByteContext *bc, uint8_t *str, int strsize, int *length)
Read AMF string value.
Definition: rtmppkt.c:120
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