avio: rename ByteIOContext to AVIOContext.
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
1617ad97
FB
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
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
9fcae973 25#include "libavutil/parseutils.h"
f5d33f52 26#include "libavutil/random_seed.h"
1617ad97
FB
27#include "avformat.h"
28
db0ed93e 29#include <sys/time.h>
a8475bbd
LB
30#if HAVE_POLL_H
31#include <poll.h>
6ad1c9c9 32#endif
ea452b54 33#include <strings.h>
e4a9e3cc 34#include "internal.h"
42572ef5 35#include "network.h"
cbfa66d0 36#include "os_support.h"
f5d33f52 37#include "http.h"
c971ff19 38#include "rtsp.h"
1617ad97 39
302879cb 40#include "rtpdec.h"
e9dea59f 41#include "rdt.h"
965a3ddb 42#include "rtpdec_formats.h"
a493f80a 43#include "rtpenc_chain.h"
4934884a 44
1617ad97 45//#define DEBUG
b6892136 46//#define DEBUG_RTP_TCP
1617ad97 47
a8475bbd 48/* Timeout values for socket poll, in ms,
9cba6f5f 49 * and read_packet(), in seconds */
a8475bbd 50#define POLL_TIMEOUT_MS 100
9cba6f5f 51#define READ_PACKET_TIMEOUT_S 10
a8475bbd 52#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 53#define SDP_MAX_SIZE 16384
96a7c975 54#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 55
1ef36a70
RB
56static void get_word_until_chars(char *buf, int buf_size,
57 const char *sep, const char **pp)
1617ad97
FB
58{
59 const char *p;
60 char *q;
61
62 p = *pp;
30619e6e 63 p += strspn(p, SPACE_CHARS);
1617ad97
FB
64 q = buf;
65 while (!strchr(sep, *p) && *p != '\0') {
66 if ((q - buf) < buf_size - 1)
67 *q++ = *p;
68 p++;
69 }
70 if (buf_size > 0)
71 *q = '\0';
72 *pp = p;
73}
74
1ef36a70
RB
75static void get_word_sep(char *buf, int buf_size, const char *sep,
76 const char **pp)
1617ad97 77{
1ef36a70
RB
78 if (**pp == '/') (*pp)++;
79 get_word_until_chars(buf, buf_size, sep, pp);
80}
1617ad97 81
1ef36a70
RB
82static void get_word(char *buf, int buf_size, const char **pp)
83{
84 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
85}
86
8bf0f969
MS
87/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
88 * and end time.
89 * Used for seeking in the rtp stream.
90 */
91static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
92{
93 char buf[256];
94
95 p += strspn(p, SPACE_CHARS);
96 if (!av_stristart(p, "npt=", &p))
97 return;
98
99 *start = AV_NOPTS_VALUE;
100 *end = AV_NOPTS_VALUE;
101
102 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 103 av_parse_time(start, buf, 1);
8bf0f969
MS
104 if (*p == '-') {
105 p++;
106 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 107 av_parse_time(end, buf, 1);
8bf0f969
MS
108 }
109// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
110// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
111}
112
113static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
114{
115 struct addrinfo hints, *ai = NULL;
116 memset(&hints, 0, sizeof(hints));
117 hints.ai_flags = AI_NUMERICHOST;
118 if (getaddrinfo(buf, NULL, &hints, &ai))
119 return -1;
120 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
121 freeaddrinfo(ai);
122 return 0;
123}
124
44b70ce5 125#if CONFIG_RTPDEC
003eb642
MS
126static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
127 RTSPStream *rtsp_st, AVCodecContext *codec)
128{
129 if (!handler)
130 return;
131 codec->codec_id = handler->codec_id;
132 rtsp_st->dynamic_handler = handler;
133 if (handler->open)
134 rtsp_st->dynamic_protocol_context = handler->open();
135}
136
c8965800 137/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 138static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 139 AVStream *st, RTSPStream *rtsp_st,
c8965800 140 int payload_type, const char *p)
93ced3e8 141{
86b6e387 142 AVCodecContext *codec = st->codec;
93ced3e8 143 char buf[256];
d1ccf0e0
RD
144 int i;
145 AVCodec *c;
7b49ce2e 146 const char *c_name;
93ced3e8 147
d1ccf0e0 148 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
149 * see if we can handle this kind of payload.
150 * The space should normally not be there but some Real streams or
151 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
152 * have a trailing space. */
153 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 154 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
155 RTPDynamicProtocolHandler *handler =
156 ff_rtp_handler_find_by_name(buf, codec->codec_type);
157 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
158 /* If no dynamic handler was found, check with the list of standard
159 * allocated types, if such a stream for some reason happens to
160 * use a private payload type. This isn't handled in rtpdec.c, since
161 * the format name from the rtpmap line never is passed into rtpdec. */
162 if (!rtsp_st->dynamic_handler)
163 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 164 } else {
c8965800
RB
165 /* We are in a standard case
166 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 167 /* search into AVRtpPayloadTypes[] */
7ed19d7f 168 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
169 }
170
171 c = avcodec_find_decoder(codec->codec_id);
172 if (c && c->name)
7b49ce2e 173 c_name = c->name;
d1ccf0e0 174 else
170870b7 175 c_name = "(null)";
d1ccf0e0 176
7515ed0c
RB
177 get_word_sep(buf, sizeof(buf), "/", &p);
178 i = atoi(buf);
179 switch (codec->codec_type) {
72415b2a 180 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
181 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
182 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
183 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
184 if (i > 0) {
185 codec->sample_rate = i;
86b6e387 186 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
187 get_word_sep(buf, sizeof(buf), "/", &p);
188 i = atoi(buf);
189 if (i > 0)
190 codec->channels = i;
191 // TODO: there is a bug here; if it is a mono stream, and
192 // less than 22000Hz, faad upconverts to stereo and twice
193 // the frequency. No problem, but the sample rate is being
194 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 195 }
7515ed0c
RB
196 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
197 codec->sample_rate);
198 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
199 codec->channels);
200 break;
72415b2a 201 case AVMEDIA_TYPE_VIDEO:
7515ed0c 202 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
203 if (i > 0)
204 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
205 break;
206 default:
207 break;
208 }
209 return 0;
93ced3e8
FB
210}
211
c2bfd816 212/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
213 * is broken out as a function because it is used in rtp_h264.c, which is
214 * forthcoming. */
3307e6ea 215int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 216 char *value, int value_size)
d0deedcb 217{
30619e6e 218 *p += strspn(*p, SPACE_CHARS);
c8965800 219 if (**p) {
d0deedcb
RM
220 get_word_sep(attr, attr_size, "=", p);
221 if (**p == '=')
222 (*p)++;
223 get_word_sep(value, value_size, ";", p);
224 if (**p == ';')
225 (*p)++;
226 return 1;
227 }
228 return 0;
229}
230
93ced3e8
FB
231typedef struct SDPParseState {
232 /* SDP only */
3fbd12d1 233 struct sockaddr_storage default_ip;
c8965800
RB
234 int default_ttl;
235 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
236} SDPParseState;
237
238static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
239 int letter, const char *buf)
240{
8b1ab7bf 241 RTSPState *rt = s->priv_data;
1617ad97
FB
242 char buf1[64], st_type[64];
243 const char *p;
72415b2a 244 enum AVMediaType codec_type;
fb65d2ca 245 int payload_type, i;
1617ad97
FB
246 AVStream *st;
247 RTSPStream *rtsp_st;
3fbd12d1 248 struct sockaddr_storage sdp_ip;
93ced3e8
FB
249 int ttl;
250
dfd2a005 251 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
252
253 p = buf;
cb760a47
RB
254 if (s1->skip_media && letter != 'm')
255 return;
c8965800 256 switch (letter) {
93ced3e8
FB
257 case 'c':
258 get_word(buf1, sizeof(buf1), &p);
259 if (strcmp(buf1, "IN") != 0)
260 return;
261 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 262 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
263 return;
264 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 265 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
266 return;
267 ttl = 16;
268 if (*p == '/') {
269 p++;
270 get_word_sep(buf1, sizeof(buf1), "/", &p);
271 ttl = atoi(buf1);
272 }
273 if (s->nb_streams == 0) {
274 s1->default_ip = sdp_ip;
275 s1->default_ttl = ttl;
276 } else {
d9c0510e 277 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
278 rtsp_st->sdp_ip = sdp_ip;
279 rtsp_st->sdp_ttl = ttl;
280 }
281 break;
1617ad97 282 case 's':
2ef6c124 283 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
284 break;
285 case 'i':
286 if (s->nb_streams == 0) {
2ef6c124 287 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
288 break;
289 }
290 break;
291 case 'm':
292 /* new stream */
cb760a47 293 s1->skip_media = 0;
1617ad97
FB
294 get_word(st_type, sizeof(st_type), &p);
295 if (!strcmp(st_type, "audio")) {
72415b2a 296 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 297 } else if (!strcmp(st_type, "video")) {
72415b2a 298 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 299 } else if (!strcmp(st_type, "application")) {
72415b2a 300 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 301 } else {
cb760a47 302 s1->skip_media = 1;
1617ad97
FB
303 return;
304 }
1617ad97
FB
305 rtsp_st = av_mallocz(sizeof(RTSPStream));
306 if (!rtsp_st)
307 return;
8b1ab7bf
FB
308 rtsp_st->stream_index = -1;
309 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
310
311 rtsp_st->sdp_ip = s1->default_ip;
312 rtsp_st->sdp_ttl = s1->default_ttl;
313
93ced3e8
FB
314 get_word(buf1, sizeof(buf1), &p); /* port */
315 rtsp_st->sdp_port = atoi(buf1);
316
317 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 318
93ced3e8
FB
319 /* XXX: handle list of formats */
320 get_word(buf1, sizeof(buf1), &p); /* format list */
321 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 322
7ed19d7f 323 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
324 /* no corresponding stream */
325 } else {
b2dd842d 326 st = av_new_stream(s, rt->nb_rtsp_streams - 1);
8b1ab7bf
FB
327 if (!st)
328 return;
8b1ab7bf 329 rtsp_st->stream_index = st->index;
01f4895c 330 st->codec->codec_type = codec_type;
d1ccf0e0 331 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 332 RTPDynamicProtocolHandler *handler;
8b1ab7bf 333 /* if standard payload type, we can find the codec right now */
bf6d9818 334 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
335 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
336 st->codec->sample_rate > 0)
86b6e387 337 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
338 /* Even static payload types may need a custom depacketizer */
339 handler = ff_rtp_handler_find_by_id(
340 rtsp_st->sdp_payload_type, st->codec->codec_type);
341 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
342 }
343 }
1617ad97 344 /* put a default control url */
00eb13e0 345 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 346 sizeof(rtsp_st->control_url));
1617ad97
FB
347 break;
348 case 'a':
00eb13e0
AS
349 if (av_strstart(p, "control:", &p)) {
350 if (s->nb_streams == 0) {
351 if (!strncmp(p, "rtsp://", 7))
352 av_strlcpy(rt->control_uri, p,
353 sizeof(rt->control_uri));
354 } else {
0b6a7ff4
MS
355 char proto[32];
356 /* get the control url */
d9c0510e 357 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 358
0b6a7ff4
MS
359 /* XXX: may need to add full url resolution */
360 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
361 NULL, NULL, 0, p);
362 if (proto[0] == '\0') {
363 /* relative control URL */
364 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
365 av_strlcat(rtsp_st->control_url, "/",
366 sizeof(rtsp_st->control_url));
367 av_strlcat(rtsp_st->control_url, p,
368 sizeof(rtsp_st->control_url));
369 } else
370 av_strlcpy(rtsp_st->control_url, p,
371 sizeof(rtsp_st->control_url));
00eb13e0 372 }
83d14c85 373 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 374 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 375 get_word(buf1, sizeof(buf1), &p);
93ced3e8 376 payload_type = atoi(buf1);
83d14c85 377 st = s->streams[s->nb_streams - 1];
d9c0510e 378 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 379 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
380 } else if (av_strstart(p, "fmtp:", &p) ||
381 av_strstart(p, "framesize:", &p)) {
93ced3e8 382 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
383 // let dynamic protocol handlers have a stab at the line.
384 get_word(buf1, sizeof(buf1), &p);
385 payload_type = atoi(buf1);
d9c0510e
MS
386 for (i = 0; i < rt->nb_rtsp_streams; i++) {
387 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
388 if (rtsp_st->sdp_payload_type == payload_type &&
389 rtsp_st->dynamic_handler &&
390 rtsp_st->dynamic_handler->parse_sdp_a_line)
391 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
392 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 393 }
c8965800 394 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
395 int64_t start, end;
396
397 // this is so that seeking on a streamed file can work.
398 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
399 s->start_time = start;
400 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
401 s->duration = (end == AV_NOPTS_VALUE) ?
402 AV_NOPTS_VALUE : end - start;
119b4668
RB
403 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
404 if (atoi(p) == 1)
405 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
406 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
407 s->nb_streams > 0) {
408 st = s->streams[s->nb_streams - 1];
409 st->codec->sample_rate = atoi(p);
1a30d541
RB
410 } else {
411 if (rt->server_type == RTSP_SERVER_WMS)
412 ff_wms_parse_sdp_a_line(s, p);
413 if (s->nb_streams > 0) {
c4a3d032
RB
414 if (rt->server_type == RTSP_SERVER_REAL)
415 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
416
d9c0510e 417 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
418 if (rtsp_st->dynamic_handler &&
419 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
420 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
421 s->nb_streams - 1,
c4a3d032 422 rtsp_st->dynamic_protocol_context, buf);
1a30d541 423 }
1617ad97
FB
424 }
425 break;
426 }
427}
428
a8475bbd
LB
429/**
430 * Parse the sdp description and allocate the rtp streams and the
431 * pollfd array used for udp ones.
432 */
433
0526c6f7 434int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 435{
a8475bbd 436 RTSPState *rt = s->priv_data;
1617ad97
FB
437 const char *p;
438 int letter;
9211bcdd
RB
439 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
440 * contain long SDP lines containing complete ASF Headers (several
441 * kB) or arrays of MDPR (RM stream descriptor) headers plus
442 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
443 * buffer is large.
444 *
afcea58c
JA
445 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
446 * in rtpdec_xiph.c. */
373afbaf 447 char buf[16384], *q;
93ced3e8 448 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 449
93ced3e8 450 memset(s1, 0, sizeof(SDPParseState));
1617ad97 451 p = content;
c8965800 452 for (;;) {
30619e6e 453 p += strspn(p, SPACE_CHARS);
1617ad97
FB
454 letter = *p;
455 if (letter == '\0')
456 break;
457 p++;
458 if (*p != '=')
459 goto next_line;
460 p++;
461 /* get the content */
462 q = buf;
b6892136 463 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
464 if ((q - buf) < sizeof(buf) - 1)
465 *q++ = *p;
466 p++;
467 }
468 *q = '\0';
93ced3e8 469 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
470 next_line:
471 while (*p != '\n' && *p != '\0')
472 p++;
473 if (*p == '\n')
474 p++;
475 }
a8475bbd
LB
476 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
477 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
478 return 0;
479}
44b70ce5 480#endif /* CONFIG_RTPDEC */
1617ad97 481
93e7490e
MS
482void ff_rtsp_undo_setup(AVFormatContext *s)
483{
484 RTSPState *rt = s->priv_data;
485 int i;
486
487 for (i = 0; i < rt->nb_rtsp_streams; i++) {
488 RTSPStream *rtsp_st = rt->rtsp_streams[i];
489 if (!rtsp_st)
490 continue;
491 if (rtsp_st->transport_priv) {
492 if (s->oformat) {
493 AVFormatContext *rtpctx = rtsp_st->transport_priv;
494 av_write_trailer(rtpctx);
495 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
496 uint8_t *ptr;
497 url_close_dyn_buf(rtpctx->pb, &ptr);
498 av_free(ptr);
499 } else {
500 url_fclose(rtpctx->pb);
501 }
b22dbb29 502 avformat_free_context(rtpctx);
93e7490e
MS
503 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
504 ff_rdt_parse_close(rtsp_st->transport_priv);
505 else if (CONFIG_RTPDEC)
506 rtp_parse_close(rtsp_st->transport_priv);
507 }
508 rtsp_st->transport_priv = NULL;
509 if (rtsp_st->rtp_handle)
510 url_close(rtsp_st->rtp_handle);
511 rtsp_st->rtp_handle = NULL;
512 }
513}
514
1ced9da3 515/* close and free RTSP streams */
3307e6ea 516void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 517{
52aa4338 518 RTSPState *rt = s->priv_data;
1ced9da3
LA
519 int i;
520 RTSPStream *rtsp_st;
521
93e7490e 522 ff_rtsp_undo_setup(s);
c8965800 523 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
524 rtsp_st = rt->rtsp_streams[i];
525 if (rtsp_st) {
1ced9da3 526 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
527 rtsp_st->dynamic_handler->close(
528 rtsp_st->dynamic_protocol_context);
ea7f0807 529 av_free(rtsp_st);
1ced9da3
LA
530 }
531 }
532 av_free(rt->rtsp_streams);
533 if (rt->asf_ctx) {
534 av_close_input_stream (rt->asf_ctx);
535 rt->asf_ctx = NULL;
536 }
a8475bbd 537 av_free(rt->p);
96a7c975 538 av_free(rt->recvbuf);
1ced9da3
LA
539}
540
c8965800 541static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
542{
543 RTSPState *rt = s->priv_data;
544 AVStream *st = NULL;
545
546 /* open the RTP context */
547 if (rtsp_st->stream_index >= 0)
548 st = s->streams[rtsp_st->stream_index];
549 if (!st)
550 s->ctx_flags |= AVFMTCTX_NOHEADER;
551
44b70ce5 552 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
553 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
554 rtsp_st->rtp_handle,
555 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 556 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 557 rtsp_st->rtp_handle = NULL;
44b70ce5 558 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
559 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
560 rtsp_st->dynamic_protocol_context,
561 rtsp_st->dynamic_handler);
44b70ce5 562 else if (CONFIG_RTPDEC)
1ced9da3 563 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
564 rtsp_st->sdp_payload_type,
565 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
566 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
567
568 if (!rtsp_st->transport_priv) {
569 return AVERROR(ENOMEM);
44b70ce5 570 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 571 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
572 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
573 rtsp_st->dynamic_protocol_context,
574 rtsp_st->dynamic_handler);
575 }
576 }
577
578 return 0;
579}
580
6f5a3d0a 581#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
582static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
583{
584 const char *p;
585 int v;
586
587 p = *pp;
30619e6e 588 p += strspn(p, SPACE_CHARS);
1617ad97
FB
589 v = strtol(p, (char **)&p, 10);
590 if (*p == '-') {
591 p++;
592 *min_ptr = v;
593 v = strtol(p, (char **)&p, 10);
594 *max_ptr = v;
595 } else {
596 *min_ptr = v;
597 *max_ptr = v;
598 }
599 *pp = p;
600}
601
602/* XXX: only one transport specification is parsed */
a9e534d5 603static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
604{
605 char transport_protocol[16];
606 char profile[16];
607 char lower_transport[16];
608 char parameter[16];
609 RTSPTransportField *th;
610 char buf[256];
115329f1 611
1617ad97 612 reply->nb_transports = 0;
115329f1 613
c8965800 614 for (;;) {
30619e6e 615 p += strspn(p, SPACE_CHARS);
1617ad97
FB
616 if (*p == '\0')
617 break;
618
619 th = &reply->transports[reply->nb_transports];
620
115329f1 621 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 622 "/", &p);
e1502118 623 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
624 get_word_sep(profile, sizeof(profile), "/;,", &p);
625 lower_transport[0] = '\0';
626 /* rtp/avp/<protocol> */
627 if (*p == '/') {
7ecc634e
LB
628 get_word_sep(lower_transport, sizeof(lower_transport),
629 ";,", &p);
119b4668
RB
630 }
631 th->transport = RTSP_TRANSPORT_RTP;
632 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
633 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 634 /* x-pn-tng/<protocol> */
e1502118
LB
635 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
636 profile[0] = '\0';
119b4668 637 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 638 }
b6892136 639 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 640 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 641 else
90abbdba 642 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 643
1617ad97
FB
644 if (*p == ';')
645 p++;
646 /* get each parameter */
647 while (*p != '\0' && *p != ',') {
648 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
649 if (!strcmp(parameter, "port")) {
650 if (*p == '=') {
651 p++;
652 rtsp_parse_range(&th->port_min, &th->port_max, &p);
653 }
654 } else if (!strcmp(parameter, "client_port")) {
655 if (*p == '=') {
656 p++;
115329f1 657 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
658 &th->client_port_max, &p);
659 }
660 } else if (!strcmp(parameter, "server_port")) {
661 if (*p == '=') {
662 p++;
115329f1 663 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
664 &th->server_port_max, &p);
665 }
666 } else if (!strcmp(parameter, "interleaved")) {
667 if (*p == '=') {
668 p++;
115329f1 669 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
670 &th->interleaved_max, &p);
671 }
672 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
673 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
674 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
675 } else if (!strcmp(parameter, "ttl")) {
676 if (*p == '=') {
677 p++;
678 th->ttl = strtol(p, (char **)&p, 10);
679 }
680 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
681 if (*p == '=') {
682 p++;
683 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 684 get_sockaddr(buf, &th->destination);
1617ad97 685 }
619298a8
JW
686 } else if (!strcmp(parameter, "source")) {
687 if (*p == '=') {
688 p++;
689 get_word_sep(buf, sizeof(buf), ";,", &p);
690 av_strlcpy(th->source, buf, sizeof(th->source));
691 }
1617ad97 692 }
619298a8 693
1617ad97
FB
694 while (*p != ';' && *p != '\0' && *p != ',')
695 p++;
696 if (*p == ';')
697 p++;
698 }
699 if (*p == ',')
700 p++;
701
702 reply->nb_transports++;
703 }
704}
705
29db7c3a
MS
706static void handle_rtp_info(RTSPState *rt, const char *url,
707 uint32_t seq, uint32_t rtptime)
708{
709 int i;
710 if (!rtptime || !url[0])
711 return;
712 if (rt->transport != RTSP_TRANSPORT_RTP)
713 return;
714 for (i = 0; i < rt->nb_rtsp_streams; i++) {
715 RTSPStream *rtsp_st = rt->rtsp_streams[i];
716 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
717 if (!rtpctx)
718 continue;
719 if (!strcmp(rtsp_st->control_url, url)) {
720 rtpctx->base_timestamp = rtptime;
721 break;
722 }
723 }
724}
725
726static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
727{
728 int read = 0;
729 char key[20], value[1024], url[1024] = "";
730 uint32_t seq = 0, rtptime = 0;
731
732 for (;;) {
733 p += strspn(p, SPACE_CHARS);
734 if (!*p)
735 break;
736 get_word_sep(key, sizeof(key), "=", &p);
737 if (*p != '=')
738 break;
739 p++;
740 get_word_sep(value, sizeof(value), ";, ", &p);
741 read++;
742 if (!strcmp(key, "url"))
743 av_strlcpy(url, value, sizeof(url));
744 else if (!strcmp(key, "seq"))
745 seq = strtol(value, NULL, 10);
746 else if (!strcmp(key, "rtptime"))
747 rtptime = strtol(value, NULL, 10);
748 if (*p == ',') {
749 handle_rtp_info(rt, url, seq, rtptime);
750 url[0] = '\0';
751 seq = rtptime = 0;
752 read = 0;
753 }
754 if (*p)
755 p++;
756 }
757 if (read > 0)
758 handle_rtp_info(rt, url, seq, rtptime);
759}
760
2626308a 761void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 762 RTSPState *rt, const char *method)
1617ad97
FB
763{
764 const char *p;
765
766 /* NOTE: we do case independent match for broken servers */
767 p = buf;
f7d78f36 768 if (av_stristart(p, "Session:", &p)) {
30e79845 769 int t;
1617ad97 770 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
771 if (av_stristart(p, ";timeout=", &p) &&
772 (t = strtol(p, NULL, 10)) > 0) {
773 reply->timeout = t;
774 }
f7d78f36 775 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 776 reply->content_length = strtol(p, NULL, 10);
f7d78f36 777 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 778 rtsp_parse_transport(reply, p);
f7d78f36 779 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 780 reply->seq = strtol(p, NULL, 10);
f7d78f36 781 } else if (av_stristart(p, "Range:", &p)) {
31693e00 782 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 783 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 784 p += strspn(p, SPACE_CHARS);
30aa6aed 785 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 786 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 787 p += strspn(p, SPACE_CHARS);
7a86bafa 788 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
789 } else if (av_stristart(p, "Notice:", &p) ||
790 av_stristart(p, "X-Notice:", &p)) {
791 reply->notice = strtol(p, NULL, 10);
d243ba30 792 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 793 p += strspn(p, SPACE_CHARS);
d243ba30 794 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 795 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 796 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
797 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
798 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 799 p += strspn(p, SPACE_CHARS);
acc9ed14 800 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 801 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 802 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
803 if (method && !strcmp(method, "DESCRIBE"))
804 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
805 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
806 p += strspn(p, SPACE_CHARS);
807 if (method && !strcmp(method, "PLAY"))
808 rtsp_parse_rtp_info(rt, p);
1617ad97
FB
809 }
810}
811
b7b8fc34 812/* skip a RTP/TCP interleaved packet */
ec55edba 813void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
814{
815 RTSPState *rt = s->priv_data;
816 int ret, len, len1;
817 uint8_t buf[1024];
818
0e848977 819 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
820 if (ret != 3)
821 return;
80fb8234 822 len = AV_RB16(buf + 1);
67c9cd69 823
dfd2a005 824 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 825
b7b8fc34
FB
826 /* skip payload */
827 while (len > 0) {
828 len1 = len;
829 if (len1 > sizeof(buf))
830 len1 = sizeof(buf);
0e848977 831 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
832 if (ret != len1)
833 return;
834 len -= len1;
835 }
836}
1617ad97 837
3307e6ea 838int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 839 unsigned char **content_ptr,
3df54c6b 840 int return_on_interleaved_data, const char *method)
1617ad97
FB
841{
842 RTSPState *rt = s->priv_data;
843 char buf[4096], buf1[1024], *q;
844 unsigned char ch;
845 const char *p;
7e726132 846 int ret, content_length, line_count = 0;
1617ad97
FB
847 unsigned char *content = NULL;
848
d541a7d2 849 memset(reply, 0, sizeof(*reply));
1617ad97 850
1617ad97 851 /* parse reply (XXX: use buffers) */
1617ad97 852 rt->last_reply[0] = '\0';
c8965800 853 for (;;) {
1617ad97 854 q = buf;
c8965800 855 for (;;) {
0e848977 856 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 857#ifdef DEBUG_RTP_TCP
dfd2a005 858 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
859#endif
860 if (ret != 1)
2401660d 861 return AVERROR_EOF;
1617ad97
FB
862 if (ch == '\n')
863 break;
b7b8fc34
FB
864 if (ch == '$') {
865 /* XXX: only parse it if first char on line ? */
7e726132
RB
866 if (return_on_interleaved_data) {
867 return 1;
868 } else
ec55edba 869 ff_rtsp_skip_packet(s);
b7b8fc34 870 } else if (ch != '\r') {
1617ad97
FB
871 if ((q - buf) < sizeof(buf) - 1)
872 *q++ = ch;
873 }
874 }
875 *q = '\0';
67c9cd69 876
dfd2a005 877 av_dlog(s, "line='%s'\n", buf);
67c9cd69 878
1617ad97
FB
879 /* test if last line */
880 if (buf[0] == '\0')
881 break;
882 p = buf;
883 if (line_count == 0) {
884 /* get reply code */
885 get_word(buf1, sizeof(buf1), &p);
886 get_word(buf1, sizeof(buf1), &p);
887 reply->status_code = atoi(buf1);
d93fdcbf 888 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 889 } else {
77223c53 890 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
891 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
892 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
893 }
894 line_count++;
895 }
115329f1 896
1617ad97 897 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 898 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 899
1617ad97
FB
900 content_length = reply->content_length;
901 if (content_length > 0) {
902 /* leave some room for a trailing '\0' (useful for simple parsing) */
903 content = av_malloc(content_length + 1);
0e848977 904 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
905 content[content_length] = '\0';
906 }
907 if (content_ptr)
908 *content_ptr = content;
e2e2e7dd
AB
909 else
910 av_free(content);
7e726132 911
7ed8211b
LB
912 if (rt->seq != reply->seq) {
913 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
914 rt->seq, reply->seq);
915 }
916
fccb1770
RB
917 /* EOS */
918 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
919 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 920 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 921 rt->state = RTSP_STATE_IDLE;
c8965800 922 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 923 return AVERROR(EIO); /* data or server error */
c8965800 924 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
925 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
926 return AVERROR(EPERM);
927
7e726132 928 return 0;
1617ad97
FB
929}
930
57c4d01e
DEP
931/**
932 * Send a command to the RTSP server without waiting for the reply.
933 *
934 * @param s RTSP (de)muxer context
935 * @param method the method for the request
936 * @param url the target url for the request
937 * @param headers extra header lines to include in the request
938 * @param send_content if non-null, the data to send as request body content
939 * @param send_content_length the length of the send_content data, or 0 if
940 * send_content is null
941 *
942 * @return zero if success, nonzero otherwise
943 */
944static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
945 const char *method, const char *url,
946 const char *headers,
947 const unsigned char *send_content,
948 int send_content_length)
29b9f58b
RB
949{
950 RTSPState *rt = s->priv_data;
f5d33f52
JA
951 char buf[4096], *out_buf;
952 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 953
f5d33f52
JA
954 /* Add in RTSP headers */
955 out_buf = buf;
29b9f58b 956 rt->seq++;
b17d11c6
MS
957 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
958 if (headers)
959 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 960 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
961 if (rt->session_id[0] != '\0' && (!headers ||
962 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 963 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 964 }
aa8bf2fb
MS
965 if (rt->auth[0]) {
966 char *str = ff_http_auth_create_response(&rt->auth_state,
967 rt->auth, url, method);
968 if (str)
969 av_strlcat(buf, str, sizeof(buf));
970 av_free(str);
971 }
dfd017bf
MS
972 if (send_content_length > 0 && send_content)
973 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 974 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 975
f5d33f52
JA
976 /* base64 encode rtsp if tunneling */
977 if (rt->control_transport == RTSP_MODE_TUNNEL) {
978 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
979 out_buf = base64buf;
980 }
981
dfd2a005 982 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 983
f5d33f52
JA
984 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
985 if (send_content_length > 0 && send_content) {
986 if (rt->control_transport == RTSP_MODE_TUNNEL) {
987 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
988 "with content data not supported\n");
989 return AVERROR_PATCHWELCOME;
990 }
b8c2c41d 991 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 992 }
30e79845 993 rt->last_cmd_time = av_gettime();
d0382374
JA
994
995 return 0;
30e79845
RB
996}
997
d0382374 998int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 999 const char *url, const char *headers)
dfd017bf 1000{
d0382374 1001 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1002}
1003
d0382374 1004int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1005 const char *headers, RTSPMessageHeader *reply,
1006 unsigned char **content_ptr)
30e79845 1007{
d0382374 1008 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1009 content_ptr, NULL, 0);
29b9f58b
RB
1010}
1011
d0382374 1012int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1013 const char *method, const char *url,
1014 const char *header,
1015 RTSPMessageHeader *reply,
1016 unsigned char **content_ptr,
1017 const unsigned char *send_content,
1018 int send_content_length)
dfd017bf 1019{
30af0779
MS
1020 RTSPState *rt = s->priv_data;
1021 HTTPAuthType cur_auth_type;
d0382374 1022 int ret;
30af0779
MS
1023
1024retry:
1025 cur_auth_type = rt->auth_state.auth_type;
d0382374 1026 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1027 send_content,
1028 send_content_length)))
d0382374 1029 return ret;
dfd017bf 1030
3df54c6b 1031 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1032 return ret;
30af0779
MS
1033
1034 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1035 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1036 goto retry;
d0382374 1037
bf55cf19 1038 if (reply->status_code > 400){
d93fdcbf 1039 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1040 method,
d93fdcbf
LB
1041 reply->status_code,
1042 reply->reason);
bf55cf19
LB
1043 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1044 }
1045
d0382374 1046 return 0;
dfd017bf
MS
1047}
1048
53620bba 1049/**
32e543f8 1050 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1051 */
fef5649a 1052int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1053 int lower_transport, const char *real_challenge)
1617ad97
FB
1054{
1055 RTSPState *rt = s->priv_data;
f830c9a4 1056 int rtx, j, i, err, interleave = 0;
1617ad97 1057 RTSPStream *rtsp_st;
a9e534d5 1058 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1059 char cmd[2048];
e9dea59f
RB
1060 const char *trans_pref;
1061
119b4668 1062 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1063 trans_pref = "x-pn-tng";
1064 else
1065 trans_pref = "RTP/AVP";
115329f1 1066
30e79845
RB
1067 /* default timeout: 1 minute */
1068 rt->timeout = 60;
1069
1617ad97
FB
1070 /* for each stream, make the setup request */
1071 /* XXX: we assume the same server is used for the control of each
c8965800 1072 * RTSP stream */
d1ccf0e0 1073
c8965800 1074 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1075 char transport[2048];
1076
f830c9a4
RB
1077 /**
1078 * WMS serves all UDP data over a single connection, the RTX, which
1079 * isn't necessarily the first in the SDP but has to be the first
1080 * to be set up, else the second/third SETUP will fail with a 461.
1081 */
1082 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1083 rt->server_type == RTSP_SERVER_WMS) {
1084 if (i == 0) {
1085 /* rtx first */
1086 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1087 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1088 if (len >= 4 &&
c8965800
RB
1089 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1090 "/rtx"))
f830c9a4
RB
1091 break;
1092 }
1093 if (rtx == rt->nb_rtsp_streams)
1094 return -1; /* no RTX found */
1095 rtsp_st = rt->rtsp_streams[rtx];
1096 } else
1097 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1098 } else
2fea9650 1099 rtsp_st = rt->rtsp_streams[i];
1617ad97 1100
1617ad97 1101 /* RTP/UDP */
90abbdba 1102 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1103 char buf[256];
85fb7b34 1104
f830c9a4
RB
1105 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1106 port = reply->transports[0].client_port_min;
1107 goto have_port;
1108 }
1109
85fb7b34 1110 /* first try in specified port range */
d1ccf0e0 1111 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1112 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1113 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1114 "?localport=%d", j);
c8965800
RB
1115 /* we will use two ports per rtp stream (rtp and rtcp) */
1116 j += 2;
1117 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1118 goto rtp_opened;
1119 }
1617ad97 1120 }
85fb7b34 1121
c8965800
RB
1122#if 0
1123 /* then try on any port */
1124 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1125 err = AVERROR_INVALIDDATA;
1126 goto fail;
1127 }
a3b058b7
MS
1128#else
1129 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1130 err = AVERROR(EIO);
1131 goto fail;
c8965800 1132#endif
85fb7b34
FB
1133
1134 rtp_opened:
67f34aaa 1135 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1136 have_port:
0ad306bc 1137 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1138 "%s/UDP;", trans_pref);
1139 if (rt->server_type != RTSP_SERVER_REAL)
1140 av_strlcat(transport, "unicast;", sizeof(transport));
1141 av_strlcatf(transport, sizeof(transport),
1142 "client_port=%d", port);
f830c9a4
RB
1143 if (rt->transport == RTSP_TRANSPORT_RTP &&
1144 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1145 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1146 }
1147
1148 /* RTP/TCP */
90abbdba 1149 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1150 /** For WMS streams, the application streams are only used for
1151 * UDP. When trying to set it up for TCP streams, the server
1152 * will return an error. Therefore, we skip those streams. */
1153 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1154 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1155 AVMEDIA_TYPE_DATA)
090438cc 1156 continue;
0ad306bc 1157 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1158 "%s/TCP;", trans_pref);
1159 if (rt->server_type == RTSP_SERVER_WMS)
1160 av_strlcat(transport, "unicast;", sizeof(transport));
1161 av_strlcatf(transport, sizeof(transport),
1162 "interleaved=%d-%d",
1163 interleave, interleave + 1);
1164 interleave += 2;
1617ad97
FB
1165 }
1166
90abbdba 1167 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1168 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1169 "%s/UDP;multicast", trans_pref);
1617ad97 1170 }
69adcc4f
MS
1171 if (s->oformat) {
1172 av_strlcat(transport, ";mode=receive", sizeof(transport));
1173 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1174 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1175 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1176 snprintf(cmd, sizeof(cmd),
b6892136 1177 "Transport: %s\r\n",
b17d11c6 1178 transport);
44b70ce5 1179 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1180 char real_res[41], real_csum[9];
1181 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1182 real_challenge);
1183 av_strlcatf(cmd, sizeof(cmd),
1184 "If-Match: %s\r\n"
1185 "RealChallenge2: %s, sd=%s\r\n",
1186 rt->session_id, real_res, real_csum);
1187 }
b17d11c6 1188 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1189 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1190 err = 1;
1191 goto fail;
7e6ca34f
RB
1192 } else if (reply->status_code != RTSP_STATUS_OK ||
1193 reply->nb_transports != 1) {
1617ad97
FB
1194 err = AVERROR_INVALIDDATA;
1195 goto fail;
1196 }
1197
1198 /* XXX: same protocol for all streams is required */
1199 if (i > 0) {
119b4668
RB
1200 if (reply->transports[0].lower_transport != rt->lower_transport ||
1201 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1202 err = AVERROR_INVALIDDATA;
1203 goto fail;
1204 }
1205 } else {
90abbdba 1206 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1207 rt->transport = reply->transports[0].transport;
1617ad97
FB
1208 }
1209
8c579c1c
MS
1210 /* Fail if the server responded with another lower transport mode
1211 * than what we requested. */
1212 if (reply->transports[0].lower_transport != lower_transport) {
1213 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1214 err = AVERROR_INVALIDDATA;
1215 goto fail;
1617ad97
FB
1216 }
1217
90abbdba
RB
1218 switch(reply->transports[0].lower_transport) {
1219 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1220 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1221 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1222 break;
115329f1 1223
c8965800 1224 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1225 char url[1024], options[30] = "";
c8965800 1226
a92c30d7
MS
1227 if (rt->filter_source)
1228 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1229 /* Use source address if specified */
1230 if (reply->transports[0].source[0]) {
1231 ff_url_join(url, sizeof(url), "rtp", NULL,
1232 reply->transports[0].source,
a92c30d7 1233 reply->transports[0].server_port_min, options);
619298a8 1234 } else {
7bac991f 1235 ff_url_join(url, sizeof(url), "rtp", NULL, host,
a92c30d7 1236 reply->transports[0].server_port_min, options);
619298a8 1237 }
c8965800
RB
1238 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1239 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1240 err = AVERROR_INVALIDDATA;
1241 goto fail;
1617ad97 1242 }
9c8fa20d
MS
1243 /* Try to initialize the connection state in a
1244 * potential NAT router by sending dummy packets.
1245 * RTP/RTCP dummy packets are used for RDT, too.
1246 */
44b70ce5
MS
1247 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1248 CONFIG_RTPDEC)
9c8fa20d 1249 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1250 break;
c8965800
RB
1251 }
1252 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1253 char url[1024], namebuf[50];
1254 struct sockaddr_storage addr;
c8965800
RB
1255 int port, ttl;
1256
7934b15d
MS
1257 if (reply->transports[0].destination.ss_family) {
1258 addr = reply->transports[0].destination;
c8965800
RB
1259 port = reply->transports[0].port_min;
1260 ttl = reply->transports[0].ttl;
1261 } else {
7934b15d 1262 addr = rtsp_st->sdp_ip;
c8965800
RB
1263 port = rtsp_st->sdp_port;
1264 ttl = rtsp_st->sdp_ttl;
1265 }
7934b15d
MS
1266 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1267 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1268 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1269 port, "?ttl=%d", ttl);
c8965800
RB
1270 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1271 err = AVERROR_INVALIDDATA;
1272 goto fail;
1617ad97
FB
1273 }
1274 break;
1275 }
c8965800 1276 }
d1ccf0e0 1277
ee0cb67f 1278 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1279 goto fail;
1617ad97
FB
1280 }
1281
30e79845
RB
1282 if (reply->timeout > 0)
1283 rt->timeout = reply->timeout;
1284
2e889ae4 1285 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1286 rt->need_subscription = 1;
1287
53620bba
RB
1288 return 0;
1289
1290fail:
aeb2de1c 1291 ff_rtsp_undo_setup(s);
53620bba
RB
1292 return err;
1293}
1294
b8c2c41d
JA
1295void ff_rtsp_close_connections(AVFormatContext *s)
1296{
1297 RTSPState *rt = s->priv_data;
1298 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1299 url_close(rt->rtsp_hd);
6217b645 1300 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1301}
1302
3307e6ea 1303int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1304{
1305 RTSPState *rt = s->priv_data;
921da217
LB
1306 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1307 char *option_list, *option, *filename;
03f8fc08 1308 int port, err, tcp_fd;
354b7573 1309 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1310 int lower_transport_mask = 0;
2762a7a2 1311 char real_challenge[64] = "";
03f8fc08
MS
1312 struct sockaddr_storage peer;
1313 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1314
1315 if (!ff_network_init())
1316 return AVERROR(EIO);
c8965800 1317redirect:
f5d33f52 1318 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1319 /* extract hostname and port */
f3bfe388 1320 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1321 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1322 if (*auth) {
aa8bf2fb 1323 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1324 }
53620bba
RB
1325 if (port < 0)
1326 port = RTSP_DEFAULT_PORT;
1327
1328 /* search for options */
602eb779 1329 option_list = strrchr(path, '?');
53620bba 1330 if (option_list) {
2a21adf9
MS
1331 /* Strip out the RTSP specific options, write out the rest of
1332 * the options back into the same string. */
1333 filename = option_list;
c8965800 1334 while (option_list) {
53620bba 1335 /* move the option pointer */
921da217 1336 option = ++option_list;
53620bba
RB
1337 option_list = strchr(option_list, '&');
1338 if (option_list)
921da217
LB
1339 *option_list = 0;
1340
53620bba 1341 /* handle the options */
c8965800 1342 if (!strcmp(option, "udp")) {
7a033e08 1343 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1344 } else if (!strcmp(option, "multicast")) {
7a033e08 1345 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1346 } else if (!strcmp(option, "tcp")) {
7a033e08 1347 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1348 } else if(!strcmp(option, "http")) {
1349 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1350 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1351 } else if (!strcmp(option, "filter_src")) {
1352 rt->filter_source = 1;
c8965800 1353 } else {
2a21adf9
MS
1354 /* Write options back into the buffer, using memmove instead
1355 * of strcpy since the strings may overlap. */
1356 int len = strlen(option);
1357 memmove(++filename, option, len);
1358 filename += len;
921da217
LB
1359 if (option_list) *filename = '&';
1360 }
53620bba 1361 }
921da217 1362 *filename = 0;
53620bba
RB
1363 }
1364
90abbdba 1365 if (!lower_transport_mask)
2a1d51c5 1366 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1367
3e24c770 1368 if (s->oformat) {
b7dc88fc
MS
1369 /* Only UDP or TCP - UDP multicast isn't supported. */
1370 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1371 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1372 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1373 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1374 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1375 err = AVERROR(EINVAL);
1376 goto fail;
1377 }
1378 }
1379
4bc5cc23
MS
1380 /* Construct the URI used in request; this is similar to s->filename,
1381 * but with authentication credentials removed and RTSP specific options
1382 * stripped out. */
1383 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1384 host, port, "%s", path);
1385
f5d33f52
JA
1386 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1387 /* set up initial handshake for tunneling */
1388 char httpname[1024];
1389 char sessioncookie[17];
1390 char headers[1024];
1391
10ed37b5 1392 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1393 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1394 av_get_random_seed(), av_get_random_seed());
1395
1396 /* GET requests */
9290f15d 1397 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1398 err = AVERROR(EIO);
1399 goto fail;
1400 }
1401
1402 /* generate GET headers */
1403 snprintf(headers, sizeof(headers),
1404 "x-sessioncookie: %s\r\n"
1405 "Accept: application/x-rtsp-tunnelled\r\n"
1406 "Pragma: no-cache\r\n"
1407 "Cache-Control: no-cache\r\n",
1408 sessioncookie);
00e4a1f4 1409 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1410
1411 /* complete the connection */
9290f15d 1412 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1413 err = AVERROR(EIO);
1414 goto fail;
1415 }
1416
1417 /* POST requests */
9290f15d 1418 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1419 err = AVERROR(EIO);
1420 goto fail;
1421 }
1422
1423 /* generate POST headers */
1424 snprintf(headers, sizeof(headers),
1425 "x-sessioncookie: %s\r\n"
1426 "Content-Type: application/x-rtsp-tunnelled\r\n"
1427 "Pragma: no-cache\r\n"
1428 "Cache-Control: no-cache\r\n"
1429 "Content-Length: 32767\r\n"
1430 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1431 sessioncookie);
00e4a1f4
JA
1432 ff_http_set_headers(rt->rtsp_hd_out, headers);
1433 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1434
a8ead332
MS
1435 /* Initialize the authentication state for the POST session. The HTTP
1436 * protocol implementation doesn't properly handle multi-pass
1437 * authentication for POST requests, since it would require one of
1438 * the following:
1439 * - implementing Expect: 100-continue, which many HTTP servers
1440 * don't support anyway, even less the RTSP servers that do HTTP
1441 * tunneling
1442 * - sending the whole POST data until getting a 401 reply specifying
1443 * what authentication method to use, then resending all that data
1444 * - waiting for potential 401 replies directly after sending the
1445 * POST header (waiting for some unspecified time)
1446 * Therefore, we copy the full auth state, which works for both basic
1447 * and digest. (For digest, we would have to synchronize the nonce
1448 * count variable between the two sessions, if we'd do more requests
1449 * with the original session, though.)
1450 */
1451 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1452
9290f15d
MS
1453 /* complete the connection */
1454 if (url_connect(rt->rtsp_hd_out)) {
1455 err = AVERROR(EIO);
1456 goto fail;
1457 }
f5d33f52 1458 } else {
48e77473 1459 /* open the tcp connection */
41874d0a 1460 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1461 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1462 err = AVERROR(EIO);
1463 goto fail;
1464 }
00e4a1f4 1465 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1466 }
53620bba
RB
1467 rt->seq = 0;
1468
00e4a1f4 1469 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1470 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1471 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1472 NULL, 0, NI_NUMERICHOST);
1473 }
1474
c8965800
RB
1475 /* request options supported by the server; this also detects server
1476 * type */
1cf151e9 1477 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1478 cmd[0] = 0;
2e889ae4 1479 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1480 av_strlcat(cmd,
1481 /**
1482 * The following entries are required for proper
1483 * streaming from a Realmedia server. They are
1484 * interdependent in some way although we currently
1485 * don't quite understand how. Values were copied
1486 * from mplayer SVN r23589.
1487 * @param CompanyID is a 16-byte ID in base64
1488 * @param ClientChallenge is a 16-byte ID in hex
1489 */
1490 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1491 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1492 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1493 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1494 sizeof(cmd));
b17d11c6 1495 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1496 if (reply->status_code != RTSP_STATUS_OK) {
1497 err = AVERROR_INVALIDDATA;
1498 goto fail;
1499 }
1500
1501 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1502 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1503 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1504 continue;
7a86bafa
RB
1505 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1506 rt->server_type = RTSP_SERVER_WMS;
c8965800 1507 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1508 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1509 break;
1510 }
1511
44b70ce5 1512 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1513 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1514 else if (CONFIG_RTSP_MUXER)
c2688f3a 1515 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1516 if (err)
53620bba 1517 goto fail;
53620bba 1518
8a8754d8 1519 do {
c8965800
RB
1520 int lower_transport = ff_log2_tab[lower_transport_mask &
1521 ~(lower_transport_mask - 1)];
8a8754d8 1522
fef5649a 1523 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1524 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1525 real_challenge : NULL);
8a8754d8 1526 if (err < 0)
7e6ca34f 1527 goto fail;
90abbdba
RB
1528 lower_transport_mask &= ~(1 << lower_transport);
1529 if (lower_transport_mask == 0 && err == 1) {
adef229e 1530 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1531 goto fail;
1532 }
1533 } while (err);
53620bba 1534
2762a7a2
MS
1535 rt->lower_transport_mask = lower_transport_mask;
1536 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1537 rt->state = RTSP_STATE_IDLE;
c8965800 1538 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1539 return 0;
1540 fail:
3307e6ea 1541 ff_rtsp_close_streams(s);
b8c2c41d 1542 ff_rtsp_close_connections(s);
35cfd646 1543 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1544 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1545 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1546 reply->status_code,
1547 s->filename);
1548 goto redirect;
1549 }
57b5555c 1550 ff_network_close();
1617ad97
FB
1551 return err;
1552}
2e802e38 1553#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1554
44b70ce5 1555#if CONFIG_RTPDEC
0e59034e 1556static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1557 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1558{
1559 RTSPState *rt = s->priv_data;
1560 RTSPStream *rtsp_st;
a8475bbd
LB
1561 int n, i, ret, tcp_fd, timeout_cnt = 0;
1562 int max_p = 0;
1563 struct pollfd *p = rt->p;
0e59034e 1564
c8965800 1565 for (;;) {
0e59034e
RB
1566 if (url_interrupt_cb())
1567 return AVERROR(EINTR);
321259c1
MS
1568 if (wait_end && wait_end - av_gettime() < 0)
1569 return AVERROR(EAGAIN);
a8475bbd 1570 max_p = 0;
0e59034e 1571 if (rt->rtsp_hd) {
a8475bbd
LB
1572 tcp_fd = url_get_file_handle(rt->rtsp_hd);
1573 p[max_p].fd = tcp_fd;
1574 p[max_p++].events = POLLIN;
0e59034e 1575 } else {
0e59034e
RB
1576 tcp_fd = -1;
1577 }
c8965800 1578 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1579 rtsp_st = rt->rtsp_streams[i];
1580 if (rtsp_st->rtp_handle) {
a8475bbd
LB
1581 p[max_p].fd = url_get_file_handle(rtsp_st->rtp_handle);
1582 p[max_p++].events = POLLIN;
1583 p[max_p].fd = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1584 p[max_p++].events = POLLIN;
0e59034e
RB
1585 }
1586 }
a8475bbd 1587 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1588 if (n > 0) {
a8475bbd 1589 int j = 1 - (tcp_fd == -1);
9cba6f5f 1590 timeout_cnt = 0;
c8965800 1591 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1592 rtsp_st = rt->rtsp_streams[i];
1593 if (rtsp_st->rtp_handle) {
a8475bbd 1594 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
0e59034e
RB
1595 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1596 if (ret > 0) {
1597 *prtsp_st = rtsp_st;
1598 return ret;
1599 }
1600 }
a8475bbd 1601 j+=2;
0e59034e
RB
1602 }
1603 }
5fe8021a 1604#if CONFIG_RTSP_DEMUXER
a8475bbd 1605 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1606 RTSPMessageHeader reply;
1607
3df54c6b 1608 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1609 if (ret < 0)
1610 return ret;
0e59034e 1611 /* XXX: parse message */
c02fd3d2 1612 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1613 return 0;
1614 }
5fe8021a 1615#endif
9cba6f5f 1616 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1617 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1618 } else if (n < 0 && errno != EINTR)
1619 return AVERROR(errno);
0e59034e
RB
1620 }
1621}
1622
0526c6f7 1623int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1624{
1625 RTSPState *rt = s->priv_data;
1626 int ret, len;
321259c1
MS
1627 RTSPStream *rtsp_st, *first_queue_st = NULL;
1628 int64_t wait_end = 0;
0e59034e 1629
b20359f5
JA
1630 if (rt->nb_byes == rt->nb_rtsp_streams)
1631 return AVERROR_EOF;
1632
0e59034e
RB
1633 /* get next frames from the same RTP packet */
1634 if (rt->cur_transport_priv) {
c8965800 1635 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1636 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1637 } else
0e59034e
RB
1638 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1639 if (ret == 0) {
1640 rt->cur_transport_priv = NULL;
1641 return 0;
1642 } else if (ret == 1) {
1643 return 0;
c8965800 1644 } else
0e59034e 1645 rt->cur_transport_priv = NULL;
0e59034e
RB
1646 }
1647
321259c1
MS
1648 if (rt->transport == RTSP_TRANSPORT_RTP) {
1649 int i;
1650 int64_t first_queue_time = 0;
1651 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1652 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1653 int64_t queue_time;
1654 if (!rtpctx)
1655 continue;
1656 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1657 if (queue_time && (queue_time - first_queue_time < 0 ||
1658 !first_queue_time)) {
1659 first_queue_time = queue_time;
1660 first_queue_st = rt->rtsp_streams[i];
1661 }
1662 }
1663 if (first_queue_time)
1664 wait_end = first_queue_time + s->max_delay;
1665 }
1666
0e59034e
RB
1667 /* read next RTP packet */
1668 redo:
96a7c975
MS
1669 if (!rt->recvbuf) {
1670 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1671 if (!rt->recvbuf)
1672 return AVERROR(ENOMEM);
1673 }
1674
0e59034e
RB
1675 switch(rt->lower_transport) {
1676 default:
5fe8021a 1677#if CONFIG_RTSP_DEMUXER
0e59034e 1678 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1679 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1680 break;
5fe8021a 1681#endif
0e59034e
RB
1682 case RTSP_LOWER_TRANSPORT_UDP:
1683 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1684 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1685 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
0e59034e
RB
1686 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1687 break;
1688 }
321259c1
MS
1689 if (len == AVERROR(EAGAIN) && first_queue_st &&
1690 rt->transport == RTSP_TRANSPORT_RTP) {
1691 rtsp_st = first_queue_st;
1692 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1693 goto end;
1694 }
0e59034e
RB
1695 if (len < 0)
1696 return len;
1697 if (len == 0)
1698 return AVERROR_EOF;
c8965800 1699 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1700 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1701 } else {
ad4ad27f 1702 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1703 if (ret < 0) {
1704 /* Either bad packet, or a RTCP packet. Check if the
1705 * first_rtcp_ntp_time field was initialized. */
1706 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1707 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1708 /* first_rtcp_ntp_time has been initialized for this stream,
1709 * copy the same value to all other uninitialized streams,
1710 * in order to map their timestamp origin to the same ntp time
1711 * as this one. */
1712 int i;
3a1cdcc7
MS
1713 AVStream *st = NULL;
1714 if (rtsp_st->stream_index >= 0)
1715 st = s->streams[rtsp_st->stream_index];
2cab6b48 1716 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1717 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1718 AVStream *st2 = NULL;
1719 if (rt->rtsp_streams[i]->stream_index >= 0)
1720 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1721 if (rtpctx2 && st && st2 &&
1722 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1723 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1724 rtpctx2->rtcp_ts_offset = av_rescale_q(
1725 rtpctx->rtcp_ts_offset, st->time_base,
1726 st2->time_base);
1727 }
2cab6b48
MS
1728 }
1729 }
b20359f5
JA
1730 if (ret == -RTCP_BYE) {
1731 rt->nb_byes++;
1732
1733 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1734 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1735
1736 if (rt->nb_byes == rt->nb_rtsp_streams)
1737 return AVERROR_EOF;
1738 }
2cab6b48
MS
1739 }
1740 }
321259c1 1741end:
0e59034e
RB
1742 if (ret < 0)
1743 goto redo;
c8965800 1744 if (ret == 1)
0e59034e
RB
1745 /* more packets may follow, so we save the RTP context */
1746 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1747
1748 return ret;
1749}
44b70ce5 1750#endif /* CONFIG_RTPDEC */
0e59034e 1751
44b70ce5 1752#if CONFIG_SDP_DEMUXER
cb1fdc61 1753static int sdp_probe(AVProbeData *p1)
93ced3e8 1754{
0e1ceacd 1755 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1756
3fbd12d1 1757 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1758 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1759 if (p + sizeof("c=IN IP") - 1 < p_end &&
1760 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1761 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1762
c8965800 1763 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1764 if (++p >= p_end)
cb1fdc61 1765 break;
cb1fdc61
FB
1766 if (*p == '\r')
1767 p++;
1768 }
93ced3e8
FB
1769 return 0;
1770}
1771
c8965800 1772static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1773{
8b1ab7bf 1774 RTSPState *rt = s->priv_data;
93ced3e8
FB
1775 RTSPStream *rtsp_st;
1776 int size, i, err;
1777 char *content;
1778 char url[1024];
1779
57b5555c
MS
1780 if (!ff_network_init())
1781 return AVERROR(EIO);
1782
93ced3e8
FB
1783 /* read the whole sdp file */
1784 /* XXX: better loading */
1785 content = av_malloc(SDP_MAX_SIZE);
899681cd 1786 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1787 if (size <= 0) {
1788 av_free(content);
1789 return AVERROR_INVALIDDATA;
1790 }
1791 content[size] ='\0';
1792
f81c7ac7 1793 err = ff_sdp_parse(s, content);
93ced3e8 1794 av_free(content);
f81c7ac7 1795 if (err) goto fail;
93ced3e8
FB
1796
1797 /* open each RTP stream */
c8965800 1798 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1799 char namebuf[50];
8b1ab7bf 1800 rtsp_st = rt->rtsp_streams[i];
115329f1 1801
3fbd12d1
MS
1802 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1803 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1804 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1805 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1806 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1807 rtsp_st->sdp_ttl);
dbf30963 1808 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1809 err = AVERROR_INVALIDDATA;
1810 goto fail;
1811 }
ee0cb67f 1812 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1813 goto fail;
93ced3e8
FB
1814 }
1815 return 0;
c8965800 1816fail:
3307e6ea 1817 ff_rtsp_close_streams(s);
57b5555c 1818 ff_network_close();
93ced3e8
FB
1819 return err;
1820}
1821
93ced3e8
FB
1822static int sdp_read_close(AVFormatContext *s)
1823{
3307e6ea 1824 ff_rtsp_close_streams(s);
57b5555c 1825 ff_network_close();
93ced3e8
FB
1826 return 0;
1827}
1828
c6610a21 1829AVInputFormat ff_sdp_demuxer = {
93ced3e8 1830 "sdp",
bde15e74 1831 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1832 sizeof(RTSPState),
1833 sdp_probe,
1834 sdp_read_header,
0526c6f7 1835 ff_rtsp_fetch_packet,
93ced3e8
FB
1836 sdp_read_close,
1837};
44b70ce5 1838#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1839
44b70ce5 1840#if CONFIG_RTP_DEMUXER
44594cc7
MS
1841static int rtp_probe(AVProbeData *p)
1842{
1843 if (av_strstart(p->filename, "rtp:", NULL))
1844 return AVPROBE_SCORE_MAX;
1845 return 0;
1846}
1847
1848static int rtp_read_header(AVFormatContext *s,
1849 AVFormatParameters *ap)
1850{
1851 uint8_t recvbuf[1500];
1852 char host[500], sdp[500];
1853 int ret, port;
1854 URLContext* in = NULL;
1855 int payload_type;
1856 AVCodecContext codec;
1857 struct sockaddr_storage addr;
ae628ec1 1858 AVIOContext pb;
44594cc7
MS
1859 socklen_t addrlen = sizeof(addr);
1860
1861 if (!ff_network_init())
1862 return AVERROR(EIO);
1863
1864 ret = url_open(&in, s->filename, URL_RDONLY);
1865 if (ret)
1866 goto fail;
1867
1868 while (1) {
1869 ret = url_read(in, recvbuf, sizeof(recvbuf));
1870 if (ret == AVERROR(EAGAIN))
1871 continue;
1872 if (ret < 0)
1873 goto fail;
1874 if (ret < 12) {
1875 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1876 continue;
1877 }
1878
1879 if ((recvbuf[0] & 0xc0) != 0x80) {
1880 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1881 "received\n");
1882 continue;
1883 }
1884
1885 payload_type = recvbuf[1] & 0x7f;
1886 break;
1887 }
1888 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1889 url_close(in);
1890 in = NULL;
1891
1892 memset(&codec, 0, sizeof(codec));
1893 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1894 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1895 "without an SDP file describing it\n",
1896 payload_type);
1897 goto fail;
1898 }
1899 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1900 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1901 "properly you need an SDP file "
1902 "describing it\n");
1903 }
1904
1905 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1906 NULL, 0, s->filename);
1907
1908 snprintf(sdp, sizeof(sdp),
1909 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1910 addr.ss_family == AF_INET ? 4 : 6, host,
1911 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1912 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1913 port, payload_type);
1914 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1915
1916 init_put_byte(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
1917 s->pb = &pb;
1918
1919 /* sdp_read_header initializes this again */
1920 ff_network_close();
1921
1922 ret = sdp_read_header(s, ap);
1923 s->pb = NULL;
1924 return ret;
1925
1926fail:
1927 if (in)
1928 url_close(in);
1929 ff_network_close();
1930 return ret;
1931}
1932
c6610a21 1933AVInputFormat ff_rtp_demuxer = {
44594cc7
MS
1934 "rtp",
1935 NULL_IF_CONFIG_SMALL("RTP input format"),
1936 sizeof(RTSPState),
1937 rtp_probe,
1938 rtp_read_header,
0526c6f7 1939 ff_rtsp_fetch_packet,
44594cc7
MS
1940 sdp_read_close,
1941 .flags = AVFMT_NOFILE,
1942};
44b70ce5 1943#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1944