get rid of the last svn mentions
[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 27#include "avformat.h"
e731b8d8 28#include "avio_internal.h"
1617ad97 29
db0ed93e 30#include <sys/time.h>
a8475bbd
LB
31#if HAVE_POLL_H
32#include <poll.h>
6ad1c9c9 33#endif
ea452b54 34#include <strings.h>
e4a9e3cc 35#include "internal.h"
42572ef5 36#include "network.h"
cbfa66d0 37#include "os_support.h"
f5d33f52 38#include "http.h"
c971ff19 39#include "rtsp.h"
1617ad97 40
302879cb 41#include "rtpdec.h"
e9dea59f 42#include "rdt.h"
965a3ddb 43#include "rtpdec_formats.h"
a493f80a 44#include "rtpenc_chain.h"
4934884a 45
1617ad97 46//#define DEBUG
b6892136 47//#define DEBUG_RTP_TCP
1617ad97 48
a8475bbd 49/* Timeout values for socket poll, in ms,
9cba6f5f 50 * and read_packet(), in seconds */
a8475bbd 51#define POLL_TIMEOUT_MS 100
9cba6f5f 52#define READ_PACKET_TIMEOUT_S 10
a8475bbd 53#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 54#define SDP_MAX_SIZE 16384
96a7c975 55#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 56
1ef36a70
RB
57static void get_word_until_chars(char *buf, int buf_size,
58 const char *sep, const char **pp)
1617ad97
FB
59{
60 const char *p;
61 char *q;
62
63 p = *pp;
30619e6e 64 p += strspn(p, SPACE_CHARS);
1617ad97
FB
65 q = buf;
66 while (!strchr(sep, *p) && *p != '\0') {
67 if ((q - buf) < buf_size - 1)
68 *q++ = *p;
69 p++;
70 }
71 if (buf_size > 0)
72 *q = '\0';
73 *pp = p;
74}
75
1ef36a70
RB
76static void get_word_sep(char *buf, int buf_size, const char *sep,
77 const char **pp)
1617ad97 78{
1ef36a70
RB
79 if (**pp == '/') (*pp)++;
80 get_word_until_chars(buf, buf_size, sep, pp);
81}
1617ad97 82
1ef36a70
RB
83static void get_word(char *buf, int buf_size, const char **pp)
84{
85 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
86}
87
8bf0f969
MS
88/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
89 * and end time.
90 * Used for seeking in the rtp stream.
91 */
92static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
93{
94 char buf[256];
95
96 p += strspn(p, SPACE_CHARS);
97 if (!av_stristart(p, "npt=", &p))
98 return;
99
100 *start = AV_NOPTS_VALUE;
101 *end = AV_NOPTS_VALUE;
102
103 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 104 av_parse_time(start, buf, 1);
8bf0f969
MS
105 if (*p == '-') {
106 p++;
107 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 108 av_parse_time(end, buf, 1);
8bf0f969
MS
109 }
110// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
111// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
112}
113
114static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
115{
116 struct addrinfo hints, *ai = NULL;
117 memset(&hints, 0, sizeof(hints));
118 hints.ai_flags = AI_NUMERICHOST;
119 if (getaddrinfo(buf, NULL, &hints, &ai))
120 return -1;
121 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
122 freeaddrinfo(ai);
123 return 0;
124}
125
44b70ce5 126#if CONFIG_RTPDEC
003eb642
MS
127static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
128 RTSPStream *rtsp_st, AVCodecContext *codec)
129{
130 if (!handler)
131 return;
132 codec->codec_id = handler->codec_id;
133 rtsp_st->dynamic_handler = handler;
134 if (handler->open)
135 rtsp_st->dynamic_protocol_context = handler->open();
136}
137
c8965800 138/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 139static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 140 AVStream *st, RTSPStream *rtsp_st,
c8965800 141 int payload_type, const char *p)
93ced3e8 142{
86b6e387 143 AVCodecContext *codec = st->codec;
93ced3e8 144 char buf[256];
d1ccf0e0
RD
145 int i;
146 AVCodec *c;
7b49ce2e 147 const char *c_name;
93ced3e8 148
d1ccf0e0 149 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
150 * see if we can handle this kind of payload.
151 * The space should normally not be there but some Real streams or
152 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
153 * have a trailing space. */
154 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 155 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
156 RTPDynamicProtocolHandler *handler =
157 ff_rtp_handler_find_by_name(buf, codec->codec_type);
158 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
159 /* If no dynamic handler was found, check with the list of standard
160 * allocated types, if such a stream for some reason happens to
161 * use a private payload type. This isn't handled in rtpdec.c, since
162 * the format name from the rtpmap line never is passed into rtpdec. */
163 if (!rtsp_st->dynamic_handler)
164 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 165 } else {
c8965800
RB
166 /* We are in a standard case
167 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 168 /* search into AVRtpPayloadTypes[] */
7ed19d7f 169 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
170 }
171
172 c = avcodec_find_decoder(codec->codec_id);
173 if (c && c->name)
7b49ce2e 174 c_name = c->name;
d1ccf0e0 175 else
170870b7 176 c_name = "(null)";
d1ccf0e0 177
7515ed0c
RB
178 get_word_sep(buf, sizeof(buf), "/", &p);
179 i = atoi(buf);
180 switch (codec->codec_type) {
72415b2a 181 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
182 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
183 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
184 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
185 if (i > 0) {
186 codec->sample_rate = i;
86b6e387 187 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
188 get_word_sep(buf, sizeof(buf), "/", &p);
189 i = atoi(buf);
190 if (i > 0)
191 codec->channels = i;
192 // TODO: there is a bug here; if it is a mono stream, and
193 // less than 22000Hz, faad upconverts to stereo and twice
194 // the frequency. No problem, but the sample rate is being
195 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 196 }
7515ed0c
RB
197 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
198 codec->sample_rate);
199 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
200 codec->channels);
201 break;
72415b2a 202 case AVMEDIA_TYPE_VIDEO:
7515ed0c 203 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
204 if (i > 0)
205 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
206 break;
207 default:
208 break;
209 }
210 return 0;
93ced3e8
FB
211}
212
c2bfd816 213/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
214 * is broken out as a function because it is used in rtp_h264.c, which is
215 * forthcoming. */
3307e6ea 216int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 217 char *value, int value_size)
d0deedcb 218{
30619e6e 219 *p += strspn(*p, SPACE_CHARS);
c8965800 220 if (**p) {
d0deedcb
RM
221 get_word_sep(attr, attr_size, "=", p);
222 if (**p == '=')
223 (*p)++;
224 get_word_sep(value, value_size, ";", p);
225 if (**p == ';')
226 (*p)++;
227 return 1;
228 }
229 return 0;
230}
231
93ced3e8
FB
232typedef struct SDPParseState {
233 /* SDP only */
3fbd12d1 234 struct sockaddr_storage default_ip;
c8965800
RB
235 int default_ttl;
236 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
237} SDPParseState;
238
239static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
240 int letter, const char *buf)
241{
8b1ab7bf 242 RTSPState *rt = s->priv_data;
1617ad97
FB
243 char buf1[64], st_type[64];
244 const char *p;
72415b2a 245 enum AVMediaType codec_type;
fb65d2ca 246 int payload_type, i;
1617ad97
FB
247 AVStream *st;
248 RTSPStream *rtsp_st;
3fbd12d1 249 struct sockaddr_storage sdp_ip;
93ced3e8
FB
250 int ttl;
251
dfd2a005 252 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
253
254 p = buf;
cb760a47
RB
255 if (s1->skip_media && letter != 'm')
256 return;
c8965800 257 switch (letter) {
93ced3e8
FB
258 case 'c':
259 get_word(buf1, sizeof(buf1), &p);
260 if (strcmp(buf1, "IN") != 0)
261 return;
262 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 263 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
264 return;
265 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 266 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
267 return;
268 ttl = 16;
269 if (*p == '/') {
270 p++;
271 get_word_sep(buf1, sizeof(buf1), "/", &p);
272 ttl = atoi(buf1);
273 }
274 if (s->nb_streams == 0) {
275 s1->default_ip = sdp_ip;
276 s1->default_ttl = ttl;
277 } else {
d9c0510e 278 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
279 rtsp_st->sdp_ip = sdp_ip;
280 rtsp_st->sdp_ttl = ttl;
281 }
282 break;
1617ad97 283 case 's':
2ef6c124 284 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
285 break;
286 case 'i':
287 if (s->nb_streams == 0) {
2ef6c124 288 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
289 break;
290 }
291 break;
292 case 'm':
293 /* new stream */
cb760a47 294 s1->skip_media = 0;
1617ad97
FB
295 get_word(st_type, sizeof(st_type), &p);
296 if (!strcmp(st_type, "audio")) {
72415b2a 297 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 298 } else if (!strcmp(st_type, "video")) {
72415b2a 299 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 300 } else if (!strcmp(st_type, "application")) {
72415b2a 301 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 302 } else {
cb760a47 303 s1->skip_media = 1;
1617ad97
FB
304 return;
305 }
1617ad97
FB
306 rtsp_st = av_mallocz(sizeof(RTSPStream));
307 if (!rtsp_st)
308 return;
8b1ab7bf
FB
309 rtsp_st->stream_index = -1;
310 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
311
312 rtsp_st->sdp_ip = s1->default_ip;
313 rtsp_st->sdp_ttl = s1->default_ttl;
314
93ced3e8
FB
315 get_word(buf1, sizeof(buf1), &p); /* port */
316 rtsp_st->sdp_port = atoi(buf1);
317
318 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 319
93ced3e8
FB
320 /* XXX: handle list of formats */
321 get_word(buf1, sizeof(buf1), &p); /* format list */
322 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 323
7ed19d7f 324 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
325 /* no corresponding stream */
326 } else {
b2dd842d 327 st = av_new_stream(s, rt->nb_rtsp_streams - 1);
8b1ab7bf
FB
328 if (!st)
329 return;
8b1ab7bf 330 rtsp_st->stream_index = st->index;
01f4895c 331 st->codec->codec_type = codec_type;
d1ccf0e0 332 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 333 RTPDynamicProtocolHandler *handler;
8b1ab7bf 334 /* if standard payload type, we can find the codec right now */
bf6d9818 335 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
336 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
337 st->codec->sample_rate > 0)
86b6e387 338 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
339 /* Even static payload types may need a custom depacketizer */
340 handler = ff_rtp_handler_find_by_id(
341 rtsp_st->sdp_payload_type, st->codec->codec_type);
342 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
343 }
344 }
1617ad97 345 /* put a default control url */
00eb13e0 346 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 347 sizeof(rtsp_st->control_url));
1617ad97
FB
348 break;
349 case 'a':
00eb13e0
AS
350 if (av_strstart(p, "control:", &p)) {
351 if (s->nb_streams == 0) {
352 if (!strncmp(p, "rtsp://", 7))
353 av_strlcpy(rt->control_uri, p,
354 sizeof(rt->control_uri));
355 } else {
0b6a7ff4
MS
356 char proto[32];
357 /* get the control url */
d9c0510e 358 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 359
0b6a7ff4
MS
360 /* XXX: may need to add full url resolution */
361 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
362 NULL, NULL, 0, p);
363 if (proto[0] == '\0') {
364 /* relative control URL */
365 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
366 av_strlcat(rtsp_st->control_url, "/",
367 sizeof(rtsp_st->control_url));
368 av_strlcat(rtsp_st->control_url, p,
369 sizeof(rtsp_st->control_url));
370 } else
371 av_strlcpy(rtsp_st->control_url, p,
372 sizeof(rtsp_st->control_url));
00eb13e0 373 }
83d14c85 374 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 375 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 376 get_word(buf1, sizeof(buf1), &p);
93ced3e8 377 payload_type = atoi(buf1);
83d14c85 378 st = s->streams[s->nb_streams - 1];
d9c0510e 379 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 380 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
381 } else if (av_strstart(p, "fmtp:", &p) ||
382 av_strstart(p, "framesize:", &p)) {
93ced3e8 383 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
384 // let dynamic protocol handlers have a stab at the line.
385 get_word(buf1, sizeof(buf1), &p);
386 payload_type = atoi(buf1);
d9c0510e
MS
387 for (i = 0; i < rt->nb_rtsp_streams; i++) {
388 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
389 if (rtsp_st->sdp_payload_type == payload_type &&
390 rtsp_st->dynamic_handler &&
391 rtsp_st->dynamic_handler->parse_sdp_a_line)
392 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
393 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 394 }
c8965800 395 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
396 int64_t start, end;
397
398 // this is so that seeking on a streamed file can work.
399 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
400 s->start_time = start;
401 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
402 s->duration = (end == AV_NOPTS_VALUE) ?
403 AV_NOPTS_VALUE : end - start;
119b4668
RB
404 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
405 if (atoi(p) == 1)
406 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
407 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
408 s->nb_streams > 0) {
409 st = s->streams[s->nb_streams - 1];
410 st->codec->sample_rate = atoi(p);
1a30d541
RB
411 } else {
412 if (rt->server_type == RTSP_SERVER_WMS)
413 ff_wms_parse_sdp_a_line(s, p);
414 if (s->nb_streams > 0) {
c4a3d032
RB
415 if (rt->server_type == RTSP_SERVER_REAL)
416 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
417
d9c0510e 418 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
419 if (rtsp_st->dynamic_handler &&
420 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
421 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
422 s->nb_streams - 1,
c4a3d032 423 rtsp_st->dynamic_protocol_context, buf);
1a30d541 424 }
1617ad97
FB
425 }
426 break;
427 }
428}
429
a8475bbd
LB
430/**
431 * Parse the sdp description and allocate the rtp streams and the
432 * pollfd array used for udp ones.
433 */
434
0526c6f7 435int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 436{
a8475bbd 437 RTSPState *rt = s->priv_data;
1617ad97
FB
438 const char *p;
439 int letter;
9211bcdd
RB
440 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
441 * contain long SDP lines containing complete ASF Headers (several
442 * kB) or arrays of MDPR (RM stream descriptor) headers plus
443 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
444 * buffer is large.
445 *
afcea58c
JA
446 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
447 * in rtpdec_xiph.c. */
373afbaf 448 char buf[16384], *q;
93ced3e8 449 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 450
93ced3e8 451 memset(s1, 0, sizeof(SDPParseState));
1617ad97 452 p = content;
c8965800 453 for (;;) {
30619e6e 454 p += strspn(p, SPACE_CHARS);
1617ad97
FB
455 letter = *p;
456 if (letter == '\0')
457 break;
458 p++;
459 if (*p != '=')
460 goto next_line;
461 p++;
462 /* get the content */
463 q = buf;
b6892136 464 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
465 if ((q - buf) < sizeof(buf) - 1)
466 *q++ = *p;
467 p++;
468 }
469 *q = '\0';
93ced3e8 470 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
471 next_line:
472 while (*p != '\n' && *p != '\0')
473 p++;
474 if (*p == '\n')
475 p++;
476 }
a8475bbd
LB
477 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
478 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
479 return 0;
480}
44b70ce5 481#endif /* CONFIG_RTPDEC */
1617ad97 482
93e7490e
MS
483void ff_rtsp_undo_setup(AVFormatContext *s)
484{
485 RTSPState *rt = s->priv_data;
486 int i;
487
488 for (i = 0; i < rt->nb_rtsp_streams; i++) {
489 RTSPStream *rtsp_st = rt->rtsp_streams[i];
490 if (!rtsp_st)
491 continue;
492 if (rtsp_st->transport_priv) {
493 if (s->oformat) {
494 AVFormatContext *rtpctx = rtsp_st->transport_priv;
495 av_write_trailer(rtpctx);
496 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
497 uint8_t *ptr;
498 url_close_dyn_buf(rtpctx->pb, &ptr);
499 av_free(ptr);
500 } else {
22a3212e 501 avio_close(rtpctx->pb);
93e7490e 502 }
b22dbb29 503 avformat_free_context(rtpctx);
93e7490e
MS
504 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
505 ff_rdt_parse_close(rtsp_st->transport_priv);
506 else if (CONFIG_RTPDEC)
507 rtp_parse_close(rtsp_st->transport_priv);
508 }
509 rtsp_st->transport_priv = NULL;
510 if (rtsp_st->rtp_handle)
511 url_close(rtsp_st->rtp_handle);
512 rtsp_st->rtp_handle = NULL;
513 }
514}
515
1ced9da3 516/* close and free RTSP streams */
3307e6ea 517void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 518{
52aa4338 519 RTSPState *rt = s->priv_data;
1ced9da3
LA
520 int i;
521 RTSPStream *rtsp_st;
522
93e7490e 523 ff_rtsp_undo_setup(s);
c8965800 524 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
525 rtsp_st = rt->rtsp_streams[i];
526 if (rtsp_st) {
1ced9da3 527 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
528 rtsp_st->dynamic_handler->close(
529 rtsp_st->dynamic_protocol_context);
ea7f0807 530 av_free(rtsp_st);
1ced9da3
LA
531 }
532 }
533 av_free(rt->rtsp_streams);
534 if (rt->asf_ctx) {
535 av_close_input_stream (rt->asf_ctx);
536 rt->asf_ctx = NULL;
537 }
a8475bbd 538 av_free(rt->p);
96a7c975 539 av_free(rt->recvbuf);
1ced9da3
LA
540}
541
c8965800 542static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
543{
544 RTSPState *rt = s->priv_data;
545 AVStream *st = NULL;
546
547 /* open the RTP context */
548 if (rtsp_st->stream_index >= 0)
549 st = s->streams[rtsp_st->stream_index];
550 if (!st)
551 s->ctx_flags |= AVFMTCTX_NOHEADER;
552
44b70ce5 553 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
554 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
555 rtsp_st->rtp_handle,
556 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 557 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 558 rtsp_st->rtp_handle = NULL;
44b70ce5 559 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
560 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
561 rtsp_st->dynamic_protocol_context,
562 rtsp_st->dynamic_handler);
44b70ce5 563 else if (CONFIG_RTPDEC)
1ced9da3 564 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
565 rtsp_st->sdp_payload_type,
566 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
567 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
568
569 if (!rtsp_st->transport_priv) {
570 return AVERROR(ENOMEM);
44b70ce5 571 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 572 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
573 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
574 rtsp_st->dynamic_protocol_context,
575 rtsp_st->dynamic_handler);
576 }
577 }
578
579 return 0;
580}
581
6f5a3d0a 582#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
583static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
584{
585 const char *p;
586 int v;
587
588 p = *pp;
30619e6e 589 p += strspn(p, SPACE_CHARS);
1617ad97
FB
590 v = strtol(p, (char **)&p, 10);
591 if (*p == '-') {
592 p++;
593 *min_ptr = v;
594 v = strtol(p, (char **)&p, 10);
595 *max_ptr = v;
596 } else {
597 *min_ptr = v;
598 *max_ptr = v;
599 }
600 *pp = p;
601}
602
603/* XXX: only one transport specification is parsed */
a9e534d5 604static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
605{
606 char transport_protocol[16];
607 char profile[16];
608 char lower_transport[16];
609 char parameter[16];
610 RTSPTransportField *th;
611 char buf[256];
115329f1 612
1617ad97 613 reply->nb_transports = 0;
115329f1 614
c8965800 615 for (;;) {
30619e6e 616 p += strspn(p, SPACE_CHARS);
1617ad97
FB
617 if (*p == '\0')
618 break;
619
620 th = &reply->transports[reply->nb_transports];
621
115329f1 622 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 623 "/", &p);
e1502118 624 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
625 get_word_sep(profile, sizeof(profile), "/;,", &p);
626 lower_transport[0] = '\0';
627 /* rtp/avp/<protocol> */
628 if (*p == '/') {
7ecc634e
LB
629 get_word_sep(lower_transport, sizeof(lower_transport),
630 ";,", &p);
119b4668
RB
631 }
632 th->transport = RTSP_TRANSPORT_RTP;
633 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
634 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 635 /* x-pn-tng/<protocol> */
e1502118
LB
636 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
637 profile[0] = '\0';
119b4668 638 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 639 }
b6892136 640 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 641 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 642 else
90abbdba 643 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 644
1617ad97
FB
645 if (*p == ';')
646 p++;
647 /* get each parameter */
648 while (*p != '\0' && *p != ',') {
649 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
650 if (!strcmp(parameter, "port")) {
651 if (*p == '=') {
652 p++;
653 rtsp_parse_range(&th->port_min, &th->port_max, &p);
654 }
655 } else if (!strcmp(parameter, "client_port")) {
656 if (*p == '=') {
657 p++;
115329f1 658 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
659 &th->client_port_max, &p);
660 }
661 } else if (!strcmp(parameter, "server_port")) {
662 if (*p == '=') {
663 p++;
115329f1 664 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
665 &th->server_port_max, &p);
666 }
667 } else if (!strcmp(parameter, "interleaved")) {
668 if (*p == '=') {
669 p++;
115329f1 670 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
671 &th->interleaved_max, &p);
672 }
673 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
674 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
675 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
676 } else if (!strcmp(parameter, "ttl")) {
677 if (*p == '=') {
678 p++;
679 th->ttl = strtol(p, (char **)&p, 10);
680 }
681 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
682 if (*p == '=') {
683 p++;
684 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 685 get_sockaddr(buf, &th->destination);
1617ad97 686 }
619298a8
JW
687 } else if (!strcmp(parameter, "source")) {
688 if (*p == '=') {
689 p++;
690 get_word_sep(buf, sizeof(buf), ";,", &p);
691 av_strlcpy(th->source, buf, sizeof(th->source));
692 }
1617ad97 693 }
619298a8 694
1617ad97
FB
695 while (*p != ';' && *p != '\0' && *p != ',')
696 p++;
697 if (*p == ';')
698 p++;
699 }
700 if (*p == ',')
701 p++;
702
703 reply->nb_transports++;
704 }
705}
706
29db7c3a
MS
707static void handle_rtp_info(RTSPState *rt, const char *url,
708 uint32_t seq, uint32_t rtptime)
709{
710 int i;
711 if (!rtptime || !url[0])
712 return;
713 if (rt->transport != RTSP_TRANSPORT_RTP)
714 return;
715 for (i = 0; i < rt->nb_rtsp_streams; i++) {
716 RTSPStream *rtsp_st = rt->rtsp_streams[i];
717 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
718 if (!rtpctx)
719 continue;
720 if (!strcmp(rtsp_st->control_url, url)) {
721 rtpctx->base_timestamp = rtptime;
722 break;
723 }
724 }
725}
726
727static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
728{
729 int read = 0;
730 char key[20], value[1024], url[1024] = "";
731 uint32_t seq = 0, rtptime = 0;
732
733 for (;;) {
734 p += strspn(p, SPACE_CHARS);
735 if (!*p)
736 break;
737 get_word_sep(key, sizeof(key), "=", &p);
738 if (*p != '=')
739 break;
740 p++;
741 get_word_sep(value, sizeof(value), ";, ", &p);
742 read++;
743 if (!strcmp(key, "url"))
744 av_strlcpy(url, value, sizeof(url));
745 else if (!strcmp(key, "seq"))
746 seq = strtol(value, NULL, 10);
747 else if (!strcmp(key, "rtptime"))
748 rtptime = strtol(value, NULL, 10);
749 if (*p == ',') {
750 handle_rtp_info(rt, url, seq, rtptime);
751 url[0] = '\0';
752 seq = rtptime = 0;
753 read = 0;
754 }
755 if (*p)
756 p++;
757 }
758 if (read > 0)
759 handle_rtp_info(rt, url, seq, rtptime);
760}
761
2626308a 762void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 763 RTSPState *rt, const char *method)
1617ad97
FB
764{
765 const char *p;
766
767 /* NOTE: we do case independent match for broken servers */
768 p = buf;
f7d78f36 769 if (av_stristart(p, "Session:", &p)) {
30e79845 770 int t;
1617ad97 771 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
772 if (av_stristart(p, ";timeout=", &p) &&
773 (t = strtol(p, NULL, 10)) > 0) {
774 reply->timeout = t;
775 }
f7d78f36 776 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 777 reply->content_length = strtol(p, NULL, 10);
f7d78f36 778 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 779 rtsp_parse_transport(reply, p);
f7d78f36 780 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 781 reply->seq = strtol(p, NULL, 10);
f7d78f36 782 } else if (av_stristart(p, "Range:", &p)) {
31693e00 783 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 784 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 785 p += strspn(p, SPACE_CHARS);
30aa6aed 786 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 787 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 788 p += strspn(p, SPACE_CHARS);
7a86bafa 789 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
790 } else if (av_stristart(p, "Notice:", &p) ||
791 av_stristart(p, "X-Notice:", &p)) {
792 reply->notice = strtol(p, NULL, 10);
d243ba30 793 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 794 p += strspn(p, SPACE_CHARS);
d243ba30 795 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 796 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 797 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
798 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
799 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 800 p += strspn(p, SPACE_CHARS);
acc9ed14 801 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 802 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 803 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
804 if (method && !strcmp(method, "DESCRIBE"))
805 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
806 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
807 p += strspn(p, SPACE_CHARS);
808 if (method && !strcmp(method, "PLAY"))
809 rtsp_parse_rtp_info(rt, p);
1617ad97
FB
810 }
811}
812
b7b8fc34 813/* skip a RTP/TCP interleaved packet */
ec55edba 814void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
815{
816 RTSPState *rt = s->priv_data;
817 int ret, len, len1;
818 uint8_t buf[1024];
819
0e848977 820 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
821 if (ret != 3)
822 return;
80fb8234 823 len = AV_RB16(buf + 1);
67c9cd69 824
dfd2a005 825 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 826
b7b8fc34
FB
827 /* skip payload */
828 while (len > 0) {
829 len1 = len;
830 if (len1 > sizeof(buf))
831 len1 = sizeof(buf);
0e848977 832 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
833 if (ret != len1)
834 return;
835 len -= len1;
836 }
837}
1617ad97 838
3307e6ea 839int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 840 unsigned char **content_ptr,
3df54c6b 841 int return_on_interleaved_data, const char *method)
1617ad97
FB
842{
843 RTSPState *rt = s->priv_data;
844 char buf[4096], buf1[1024], *q;
845 unsigned char ch;
846 const char *p;
7e726132 847 int ret, content_length, line_count = 0;
1617ad97
FB
848 unsigned char *content = NULL;
849
d541a7d2 850 memset(reply, 0, sizeof(*reply));
1617ad97 851
1617ad97 852 /* parse reply (XXX: use buffers) */
1617ad97 853 rt->last_reply[0] = '\0';
c8965800 854 for (;;) {
1617ad97 855 q = buf;
c8965800 856 for (;;) {
0e848977 857 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 858#ifdef DEBUG_RTP_TCP
dfd2a005 859 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
860#endif
861 if (ret != 1)
2401660d 862 return AVERROR_EOF;
1617ad97
FB
863 if (ch == '\n')
864 break;
b7b8fc34
FB
865 if (ch == '$') {
866 /* XXX: only parse it if first char on line ? */
7e726132
RB
867 if (return_on_interleaved_data) {
868 return 1;
869 } else
ec55edba 870 ff_rtsp_skip_packet(s);
b7b8fc34 871 } else if (ch != '\r') {
1617ad97
FB
872 if ((q - buf) < sizeof(buf) - 1)
873 *q++ = ch;
874 }
875 }
876 *q = '\0';
67c9cd69 877
dfd2a005 878 av_dlog(s, "line='%s'\n", buf);
67c9cd69 879
1617ad97
FB
880 /* test if last line */
881 if (buf[0] == '\0')
882 break;
883 p = buf;
884 if (line_count == 0) {
885 /* get reply code */
886 get_word(buf1, sizeof(buf1), &p);
887 get_word(buf1, sizeof(buf1), &p);
888 reply->status_code = atoi(buf1);
d93fdcbf 889 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 890 } else {
77223c53 891 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
892 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
893 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
894 }
895 line_count++;
896 }
115329f1 897
1617ad97 898 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 899 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 900
1617ad97
FB
901 content_length = reply->content_length;
902 if (content_length > 0) {
903 /* leave some room for a trailing '\0' (useful for simple parsing) */
904 content = av_malloc(content_length + 1);
0e848977 905 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
906 content[content_length] = '\0';
907 }
908 if (content_ptr)
909 *content_ptr = content;
e2e2e7dd
AB
910 else
911 av_free(content);
7e726132 912
7ed8211b
LB
913 if (rt->seq != reply->seq) {
914 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
915 rt->seq, reply->seq);
916 }
917
fccb1770
RB
918 /* EOS */
919 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
920 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 921 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 922 rt->state = RTSP_STATE_IDLE;
c8965800 923 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 924 return AVERROR(EIO); /* data or server error */
c8965800 925 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
926 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
927 return AVERROR(EPERM);
928
7e726132 929 return 0;
1617ad97
FB
930}
931
57c4d01e
DEP
932/**
933 * Send a command to the RTSP server without waiting for the reply.
934 *
935 * @param s RTSP (de)muxer context
936 * @param method the method for the request
937 * @param url the target url for the request
938 * @param headers extra header lines to include in the request
939 * @param send_content if non-null, the data to send as request body content
940 * @param send_content_length the length of the send_content data, or 0 if
941 * send_content is null
942 *
943 * @return zero if success, nonzero otherwise
944 */
945static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
946 const char *method, const char *url,
947 const char *headers,
948 const unsigned char *send_content,
949 int send_content_length)
29b9f58b
RB
950{
951 RTSPState *rt = s->priv_data;
f5d33f52
JA
952 char buf[4096], *out_buf;
953 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 954
f5d33f52
JA
955 /* Add in RTSP headers */
956 out_buf = buf;
29b9f58b 957 rt->seq++;
b17d11c6
MS
958 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
959 if (headers)
960 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 961 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
962 if (rt->session_id[0] != '\0' && (!headers ||
963 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 964 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 965 }
aa8bf2fb
MS
966 if (rt->auth[0]) {
967 char *str = ff_http_auth_create_response(&rt->auth_state,
968 rt->auth, url, method);
969 if (str)
970 av_strlcat(buf, str, sizeof(buf));
971 av_free(str);
972 }
dfd017bf
MS
973 if (send_content_length > 0 && send_content)
974 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 975 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 976
f5d33f52
JA
977 /* base64 encode rtsp if tunneling */
978 if (rt->control_transport == RTSP_MODE_TUNNEL) {
979 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
980 out_buf = base64buf;
981 }
982
dfd2a005 983 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 984
f5d33f52
JA
985 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
986 if (send_content_length > 0 && send_content) {
987 if (rt->control_transport == RTSP_MODE_TUNNEL) {
988 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
989 "with content data not supported\n");
990 return AVERROR_PATCHWELCOME;
991 }
b8c2c41d 992 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 993 }
30e79845 994 rt->last_cmd_time = av_gettime();
d0382374
JA
995
996 return 0;
30e79845
RB
997}
998
d0382374 999int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1000 const char *url, const char *headers)
dfd017bf 1001{
d0382374 1002 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1003}
1004
d0382374 1005int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1006 const char *headers, RTSPMessageHeader *reply,
1007 unsigned char **content_ptr)
30e79845 1008{
d0382374 1009 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1010 content_ptr, NULL, 0);
29b9f58b
RB
1011}
1012
d0382374 1013int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1014 const char *method, const char *url,
1015 const char *header,
1016 RTSPMessageHeader *reply,
1017 unsigned char **content_ptr,
1018 const unsigned char *send_content,
1019 int send_content_length)
dfd017bf 1020{
30af0779
MS
1021 RTSPState *rt = s->priv_data;
1022 HTTPAuthType cur_auth_type;
d0382374 1023 int ret;
30af0779
MS
1024
1025retry:
1026 cur_auth_type = rt->auth_state.auth_type;
d0382374 1027 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1028 send_content,
1029 send_content_length)))
d0382374 1030 return ret;
dfd017bf 1031
3df54c6b 1032 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1033 return ret;
30af0779
MS
1034
1035 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1036 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1037 goto retry;
d0382374 1038
bf55cf19 1039 if (reply->status_code > 400){
d93fdcbf 1040 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1041 method,
d93fdcbf
LB
1042 reply->status_code,
1043 reply->reason);
bf55cf19
LB
1044 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1045 }
1046
d0382374 1047 return 0;
dfd017bf
MS
1048}
1049
53620bba 1050/**
32e543f8 1051 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1052 */
fef5649a 1053int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1054 int lower_transport, const char *real_challenge)
1617ad97
FB
1055{
1056 RTSPState *rt = s->priv_data;
f830c9a4 1057 int rtx, j, i, err, interleave = 0;
1617ad97 1058 RTSPStream *rtsp_st;
a9e534d5 1059 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1060 char cmd[2048];
e9dea59f
RB
1061 const char *trans_pref;
1062
119b4668 1063 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1064 trans_pref = "x-pn-tng";
1065 else
1066 trans_pref = "RTP/AVP";
115329f1 1067
30e79845
RB
1068 /* default timeout: 1 minute */
1069 rt->timeout = 60;
1070
1617ad97
FB
1071 /* for each stream, make the setup request */
1072 /* XXX: we assume the same server is used for the control of each
c8965800 1073 * RTSP stream */
d1ccf0e0 1074
c8965800 1075 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1076 char transport[2048];
1077
f830c9a4
RB
1078 /**
1079 * WMS serves all UDP data over a single connection, the RTX, which
1080 * isn't necessarily the first in the SDP but has to be the first
1081 * to be set up, else the second/third SETUP will fail with a 461.
1082 */
1083 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1084 rt->server_type == RTSP_SERVER_WMS) {
1085 if (i == 0) {
1086 /* rtx first */
1087 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1088 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1089 if (len >= 4 &&
c8965800
RB
1090 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1091 "/rtx"))
f830c9a4
RB
1092 break;
1093 }
1094 if (rtx == rt->nb_rtsp_streams)
1095 return -1; /* no RTX found */
1096 rtsp_st = rt->rtsp_streams[rtx];
1097 } else
1098 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1099 } else
2fea9650 1100 rtsp_st = rt->rtsp_streams[i];
1617ad97 1101
1617ad97 1102 /* RTP/UDP */
90abbdba 1103 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1104 char buf[256];
85fb7b34 1105
f830c9a4
RB
1106 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1107 port = reply->transports[0].client_port_min;
1108 goto have_port;
1109 }
1110
85fb7b34 1111 /* first try in specified port range */
d1ccf0e0 1112 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1113 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1114 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1115 "?localport=%d", j);
c8965800
RB
1116 /* we will use two ports per rtp stream (rtp and rtcp) */
1117 j += 2;
1118 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1119 goto rtp_opened;
1120 }
1617ad97 1121 }
85fb7b34 1122
c8965800
RB
1123#if 0
1124 /* then try on any port */
1125 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1126 err = AVERROR_INVALIDDATA;
1127 goto fail;
1128 }
a3b058b7
MS
1129#else
1130 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1131 err = AVERROR(EIO);
1132 goto fail;
c8965800 1133#endif
85fb7b34
FB
1134
1135 rtp_opened:
67f34aaa 1136 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1137 have_port:
0ad306bc 1138 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1139 "%s/UDP;", trans_pref);
1140 if (rt->server_type != RTSP_SERVER_REAL)
1141 av_strlcat(transport, "unicast;", sizeof(transport));
1142 av_strlcatf(transport, sizeof(transport),
1143 "client_port=%d", port);
f830c9a4
RB
1144 if (rt->transport == RTSP_TRANSPORT_RTP &&
1145 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1146 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1147 }
1148
1149 /* RTP/TCP */
90abbdba 1150 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1151 /** For WMS streams, the application streams are only used for
1152 * UDP. When trying to set it up for TCP streams, the server
1153 * will return an error. Therefore, we skip those streams. */
1154 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1155 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1156 AVMEDIA_TYPE_DATA)
090438cc 1157 continue;
0ad306bc 1158 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1159 "%s/TCP;", trans_pref);
1160 if (rt->server_type == RTSP_SERVER_WMS)
1161 av_strlcat(transport, "unicast;", sizeof(transport));
1162 av_strlcatf(transport, sizeof(transport),
1163 "interleaved=%d-%d",
1164 interleave, interleave + 1);
1165 interleave += 2;
1617ad97
FB
1166 }
1167
90abbdba 1168 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1169 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1170 "%s/UDP;multicast", trans_pref);
1617ad97 1171 }
69adcc4f
MS
1172 if (s->oformat) {
1173 av_strlcat(transport, ";mode=receive", sizeof(transport));
1174 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1175 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1176 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1177 snprintf(cmd, sizeof(cmd),
b6892136 1178 "Transport: %s\r\n",
b17d11c6 1179 transport);
44b70ce5 1180 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1181 char real_res[41], real_csum[9];
1182 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1183 real_challenge);
1184 av_strlcatf(cmd, sizeof(cmd),
1185 "If-Match: %s\r\n"
1186 "RealChallenge2: %s, sd=%s\r\n",
1187 rt->session_id, real_res, real_csum);
1188 }
b17d11c6 1189 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1190 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1191 err = 1;
1192 goto fail;
7e6ca34f
RB
1193 } else if (reply->status_code != RTSP_STATUS_OK ||
1194 reply->nb_transports != 1) {
1617ad97
FB
1195 err = AVERROR_INVALIDDATA;
1196 goto fail;
1197 }
1198
1199 /* XXX: same protocol for all streams is required */
1200 if (i > 0) {
119b4668
RB
1201 if (reply->transports[0].lower_transport != rt->lower_transport ||
1202 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1203 err = AVERROR_INVALIDDATA;
1204 goto fail;
1205 }
1206 } else {
90abbdba 1207 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1208 rt->transport = reply->transports[0].transport;
1617ad97
FB
1209 }
1210
8c579c1c
MS
1211 /* Fail if the server responded with another lower transport mode
1212 * than what we requested. */
1213 if (reply->transports[0].lower_transport != lower_transport) {
1214 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1215 err = AVERROR_INVALIDDATA;
1216 goto fail;
1617ad97
FB
1217 }
1218
90abbdba
RB
1219 switch(reply->transports[0].lower_transport) {
1220 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1221 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1222 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1223 break;
115329f1 1224
c8965800 1225 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1226 char url[1024], options[30] = "";
c8965800 1227
a92c30d7
MS
1228 if (rt->filter_source)
1229 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1230 /* Use source address if specified */
1231 if (reply->transports[0].source[0]) {
1232 ff_url_join(url, sizeof(url), "rtp", NULL,
1233 reply->transports[0].source,
a92c30d7 1234 reply->transports[0].server_port_min, options);
619298a8 1235 } else {
7bac991f 1236 ff_url_join(url, sizeof(url), "rtp", NULL, host,
a92c30d7 1237 reply->transports[0].server_port_min, options);
619298a8 1238 }
c8965800
RB
1239 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1240 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1241 err = AVERROR_INVALIDDATA;
1242 goto fail;
1617ad97 1243 }
9c8fa20d
MS
1244 /* Try to initialize the connection state in a
1245 * potential NAT router by sending dummy packets.
1246 * RTP/RTCP dummy packets are used for RDT, too.
1247 */
44b70ce5
MS
1248 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1249 CONFIG_RTPDEC)
9c8fa20d 1250 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1251 break;
c8965800
RB
1252 }
1253 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1254 char url[1024], namebuf[50];
1255 struct sockaddr_storage addr;
c8965800
RB
1256 int port, ttl;
1257
7934b15d
MS
1258 if (reply->transports[0].destination.ss_family) {
1259 addr = reply->transports[0].destination;
c8965800
RB
1260 port = reply->transports[0].port_min;
1261 ttl = reply->transports[0].ttl;
1262 } else {
7934b15d 1263 addr = rtsp_st->sdp_ip;
c8965800
RB
1264 port = rtsp_st->sdp_port;
1265 ttl = rtsp_st->sdp_ttl;
1266 }
7934b15d
MS
1267 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1268 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1269 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1270 port, "?ttl=%d", ttl);
c8965800
RB
1271 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1272 err = AVERROR_INVALIDDATA;
1273 goto fail;
1617ad97
FB
1274 }
1275 break;
1276 }
c8965800 1277 }
d1ccf0e0 1278
ee0cb67f 1279 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1280 goto fail;
1617ad97
FB
1281 }
1282
30e79845
RB
1283 if (reply->timeout > 0)
1284 rt->timeout = reply->timeout;
1285
2e889ae4 1286 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1287 rt->need_subscription = 1;
1288
53620bba
RB
1289 return 0;
1290
1291fail:
aeb2de1c 1292 ff_rtsp_undo_setup(s);
53620bba
RB
1293 return err;
1294}
1295
b8c2c41d
JA
1296void ff_rtsp_close_connections(AVFormatContext *s)
1297{
1298 RTSPState *rt = s->priv_data;
1299 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1300 url_close(rt->rtsp_hd);
6217b645 1301 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1302}
1303
3307e6ea 1304int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1305{
1306 RTSPState *rt = s->priv_data;
921da217
LB
1307 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1308 char *option_list, *option, *filename;
03f8fc08 1309 int port, err, tcp_fd;
354b7573 1310 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1311 int lower_transport_mask = 0;
2762a7a2 1312 char real_challenge[64] = "";
03f8fc08
MS
1313 struct sockaddr_storage peer;
1314 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1315
1316 if (!ff_network_init())
1317 return AVERROR(EIO);
c8965800 1318redirect:
f5d33f52 1319 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1320 /* extract hostname and port */
f3bfe388 1321 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1322 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1323 if (*auth) {
aa8bf2fb 1324 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1325 }
53620bba
RB
1326 if (port < 0)
1327 port = RTSP_DEFAULT_PORT;
1328
1329 /* search for options */
602eb779 1330 option_list = strrchr(path, '?');
53620bba 1331 if (option_list) {
2a21adf9
MS
1332 /* Strip out the RTSP specific options, write out the rest of
1333 * the options back into the same string. */
1334 filename = option_list;
c8965800 1335 while (option_list) {
53620bba 1336 /* move the option pointer */
921da217 1337 option = ++option_list;
53620bba
RB
1338 option_list = strchr(option_list, '&');
1339 if (option_list)
921da217
LB
1340 *option_list = 0;
1341
53620bba 1342 /* handle the options */
c8965800 1343 if (!strcmp(option, "udp")) {
7a033e08 1344 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1345 } else if (!strcmp(option, "multicast")) {
7a033e08 1346 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1347 } else if (!strcmp(option, "tcp")) {
7a033e08 1348 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1349 } else if(!strcmp(option, "http")) {
1350 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1351 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1352 } else if (!strcmp(option, "filter_src")) {
1353 rt->filter_source = 1;
c8965800 1354 } else {
2a21adf9
MS
1355 /* Write options back into the buffer, using memmove instead
1356 * of strcpy since the strings may overlap. */
1357 int len = strlen(option);
1358 memmove(++filename, option, len);
1359 filename += len;
921da217
LB
1360 if (option_list) *filename = '&';
1361 }
53620bba 1362 }
921da217 1363 *filename = 0;
53620bba
RB
1364 }
1365
90abbdba 1366 if (!lower_transport_mask)
2a1d51c5 1367 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1368
3e24c770 1369 if (s->oformat) {
b7dc88fc
MS
1370 /* Only UDP or TCP - UDP multicast isn't supported. */
1371 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1372 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1373 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1374 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1375 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1376 err = AVERROR(EINVAL);
1377 goto fail;
1378 }
1379 }
1380
4bc5cc23
MS
1381 /* Construct the URI used in request; this is similar to s->filename,
1382 * but with authentication credentials removed and RTSP specific options
1383 * stripped out. */
1384 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1385 host, port, "%s", path);
1386
f5d33f52
JA
1387 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1388 /* set up initial handshake for tunneling */
1389 char httpname[1024];
1390 char sessioncookie[17];
1391 char headers[1024];
1392
10ed37b5 1393 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1394 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1395 av_get_random_seed(), av_get_random_seed());
1396
1397 /* GET requests */
9290f15d 1398 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1399 err = AVERROR(EIO);
1400 goto fail;
1401 }
1402
1403 /* generate GET headers */
1404 snprintf(headers, sizeof(headers),
1405 "x-sessioncookie: %s\r\n"
1406 "Accept: application/x-rtsp-tunnelled\r\n"
1407 "Pragma: no-cache\r\n"
1408 "Cache-Control: no-cache\r\n",
1409 sessioncookie);
00e4a1f4 1410 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1411
1412 /* complete the connection */
9290f15d 1413 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1414 err = AVERROR(EIO);
1415 goto fail;
1416 }
1417
1418 /* POST requests */
9290f15d 1419 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1420 err = AVERROR(EIO);
1421 goto fail;
1422 }
1423
1424 /* generate POST headers */
1425 snprintf(headers, sizeof(headers),
1426 "x-sessioncookie: %s\r\n"
1427 "Content-Type: application/x-rtsp-tunnelled\r\n"
1428 "Pragma: no-cache\r\n"
1429 "Cache-Control: no-cache\r\n"
1430 "Content-Length: 32767\r\n"
1431 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1432 sessioncookie);
00e4a1f4
JA
1433 ff_http_set_headers(rt->rtsp_hd_out, headers);
1434 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1435
a8ead332
MS
1436 /* Initialize the authentication state for the POST session. The HTTP
1437 * protocol implementation doesn't properly handle multi-pass
1438 * authentication for POST requests, since it would require one of
1439 * the following:
1440 * - implementing Expect: 100-continue, which many HTTP servers
1441 * don't support anyway, even less the RTSP servers that do HTTP
1442 * tunneling
1443 * - sending the whole POST data until getting a 401 reply specifying
1444 * what authentication method to use, then resending all that data
1445 * - waiting for potential 401 replies directly after sending the
1446 * POST header (waiting for some unspecified time)
1447 * Therefore, we copy the full auth state, which works for both basic
1448 * and digest. (For digest, we would have to synchronize the nonce
1449 * count variable between the two sessions, if we'd do more requests
1450 * with the original session, though.)
1451 */
1452 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1453
9290f15d
MS
1454 /* complete the connection */
1455 if (url_connect(rt->rtsp_hd_out)) {
1456 err = AVERROR(EIO);
1457 goto fail;
1458 }
f5d33f52 1459 } else {
48e77473 1460 /* open the tcp connection */
41874d0a 1461 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1462 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1463 err = AVERROR(EIO);
1464 goto fail;
1465 }
00e4a1f4 1466 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1467 }
53620bba
RB
1468 rt->seq = 0;
1469
00e4a1f4 1470 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1471 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1472 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1473 NULL, 0, NI_NUMERICHOST);
1474 }
1475
c8965800
RB
1476 /* request options supported by the server; this also detects server
1477 * type */
1cf151e9 1478 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1479 cmd[0] = 0;
2e889ae4 1480 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1481 av_strlcat(cmd,
1482 /**
1483 * The following entries are required for proper
1484 * streaming from a Realmedia server. They are
1485 * interdependent in some way although we currently
1486 * don't quite understand how. Values were copied
1487 * from mplayer SVN r23589.
1488 * @param CompanyID is a 16-byte ID in base64
1489 * @param ClientChallenge is a 16-byte ID in hex
1490 */
1491 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1492 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1493 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1494 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1495 sizeof(cmd));
b17d11c6 1496 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1497 if (reply->status_code != RTSP_STATUS_OK) {
1498 err = AVERROR_INVALIDDATA;
1499 goto fail;
1500 }
1501
1502 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1503 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1504 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1505 continue;
7a86bafa
RB
1506 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1507 rt->server_type = RTSP_SERVER_WMS;
c8965800 1508 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1509 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1510 break;
1511 }
1512
44b70ce5 1513 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1514 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1515 else if (CONFIG_RTSP_MUXER)
c2688f3a 1516 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1517 if (err)
53620bba 1518 goto fail;
53620bba 1519
8a8754d8 1520 do {
c8965800
RB
1521 int lower_transport = ff_log2_tab[lower_transport_mask &
1522 ~(lower_transport_mask - 1)];
8a8754d8 1523
fef5649a 1524 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1525 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1526 real_challenge : NULL);
8a8754d8 1527 if (err < 0)
7e6ca34f 1528 goto fail;
90abbdba
RB
1529 lower_transport_mask &= ~(1 << lower_transport);
1530 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1531 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1532 goto fail;
1533 }
1534 } while (err);
53620bba 1535
2762a7a2
MS
1536 rt->lower_transport_mask = lower_transport_mask;
1537 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1538 rt->state = RTSP_STATE_IDLE;
c8965800 1539 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1540 return 0;
1541 fail:
3307e6ea 1542 ff_rtsp_close_streams(s);
b8c2c41d 1543 ff_rtsp_close_connections(s);
35cfd646 1544 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1545 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1546 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1547 reply->status_code,
1548 s->filename);
1549 goto redirect;
1550 }
57b5555c 1551 ff_network_close();
1617ad97
FB
1552 return err;
1553}
2e802e38 1554#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1555
44b70ce5 1556#if CONFIG_RTPDEC
0e59034e 1557static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1558 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1559{
1560 RTSPState *rt = s->priv_data;
1561 RTSPStream *rtsp_st;
a8475bbd
LB
1562 int n, i, ret, tcp_fd, timeout_cnt = 0;
1563 int max_p = 0;
1564 struct pollfd *p = rt->p;
0e59034e 1565
c8965800 1566 for (;;) {
0e59034e 1567 if (url_interrupt_cb())
c76374c6 1568 return AVERROR_EXIT;
321259c1
MS
1569 if (wait_end && wait_end - av_gettime() < 0)
1570 return AVERROR(EAGAIN);
a8475bbd 1571 max_p = 0;
0e59034e 1572 if (rt->rtsp_hd) {
a8475bbd
LB
1573 tcp_fd = url_get_file_handle(rt->rtsp_hd);
1574 p[max_p].fd = tcp_fd;
1575 p[max_p++].events = POLLIN;
0e59034e 1576 } else {
0e59034e
RB
1577 tcp_fd = -1;
1578 }
c8965800 1579 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1580 rtsp_st = rt->rtsp_streams[i];
1581 if (rtsp_st->rtp_handle) {
a8475bbd
LB
1582 p[max_p].fd = url_get_file_handle(rtsp_st->rtp_handle);
1583 p[max_p++].events = POLLIN;
1584 p[max_p].fd = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1585 p[max_p++].events = POLLIN;
0e59034e
RB
1586 }
1587 }
a8475bbd 1588 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1589 if (n > 0) {
a8475bbd 1590 int j = 1 - (tcp_fd == -1);
9cba6f5f 1591 timeout_cnt = 0;
c8965800 1592 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1593 rtsp_st = rt->rtsp_streams[i];
1594 if (rtsp_st->rtp_handle) {
a8475bbd 1595 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
0e59034e
RB
1596 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1597 if (ret > 0) {
1598 *prtsp_st = rtsp_st;
1599 return ret;
1600 }
1601 }
a8475bbd 1602 j+=2;
0e59034e
RB
1603 }
1604 }
5fe8021a 1605#if CONFIG_RTSP_DEMUXER
a8475bbd 1606 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1607 RTSPMessageHeader reply;
1608
3df54c6b 1609 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1610 if (ret < 0)
1611 return ret;
0e59034e 1612 /* XXX: parse message */
c02fd3d2 1613 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1614 return 0;
1615 }
5fe8021a 1616#endif
9cba6f5f 1617 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1618 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1619 } else if (n < 0 && errno != EINTR)
1620 return AVERROR(errno);
0e59034e
RB
1621 }
1622}
1623
0526c6f7 1624int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1625{
1626 RTSPState *rt = s->priv_data;
1627 int ret, len;
321259c1
MS
1628 RTSPStream *rtsp_st, *first_queue_st = NULL;
1629 int64_t wait_end = 0;
0e59034e 1630
b20359f5
JA
1631 if (rt->nb_byes == rt->nb_rtsp_streams)
1632 return AVERROR_EOF;
1633
0e59034e
RB
1634 /* get next frames from the same RTP packet */
1635 if (rt->cur_transport_priv) {
c8965800 1636 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1637 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1638 } else
0e59034e
RB
1639 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1640 if (ret == 0) {
1641 rt->cur_transport_priv = NULL;
1642 return 0;
1643 } else if (ret == 1) {
1644 return 0;
c8965800 1645 } else
0e59034e 1646 rt->cur_transport_priv = NULL;
0e59034e
RB
1647 }
1648
321259c1
MS
1649 if (rt->transport == RTSP_TRANSPORT_RTP) {
1650 int i;
1651 int64_t first_queue_time = 0;
1652 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1653 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1654 int64_t queue_time;
1655 if (!rtpctx)
1656 continue;
1657 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1658 if (queue_time && (queue_time - first_queue_time < 0 ||
1659 !first_queue_time)) {
1660 first_queue_time = queue_time;
1661 first_queue_st = rt->rtsp_streams[i];
1662 }
1663 }
1664 if (first_queue_time)
1665 wait_end = first_queue_time + s->max_delay;
1666 }
1667
0e59034e
RB
1668 /* read next RTP packet */
1669 redo:
96a7c975
MS
1670 if (!rt->recvbuf) {
1671 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1672 if (!rt->recvbuf)
1673 return AVERROR(ENOMEM);
1674 }
1675
0e59034e
RB
1676 switch(rt->lower_transport) {
1677 default:
5fe8021a 1678#if CONFIG_RTSP_DEMUXER
0e59034e 1679 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1680 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1681 break;
5fe8021a 1682#endif
0e59034e
RB
1683 case RTSP_LOWER_TRANSPORT_UDP:
1684 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1685 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1686 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
0e59034e
RB
1687 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1688 break;
1689 }
321259c1
MS
1690 if (len == AVERROR(EAGAIN) && first_queue_st &&
1691 rt->transport == RTSP_TRANSPORT_RTP) {
1692 rtsp_st = first_queue_st;
1693 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1694 goto end;
1695 }
0e59034e
RB
1696 if (len < 0)
1697 return len;
1698 if (len == 0)
1699 return AVERROR_EOF;
c8965800 1700 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1701 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1702 } else {
ad4ad27f 1703 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1704 if (ret < 0) {
1705 /* Either bad packet, or a RTCP packet. Check if the
1706 * first_rtcp_ntp_time field was initialized. */
1707 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1708 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1709 /* first_rtcp_ntp_time has been initialized for this stream,
1710 * copy the same value to all other uninitialized streams,
1711 * in order to map their timestamp origin to the same ntp time
1712 * as this one. */
1713 int i;
3a1cdcc7
MS
1714 AVStream *st = NULL;
1715 if (rtsp_st->stream_index >= 0)
1716 st = s->streams[rtsp_st->stream_index];
2cab6b48 1717 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1718 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1719 AVStream *st2 = NULL;
1720 if (rt->rtsp_streams[i]->stream_index >= 0)
1721 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1722 if (rtpctx2 && st && st2 &&
1723 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1724 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1725 rtpctx2->rtcp_ts_offset = av_rescale_q(
1726 rtpctx->rtcp_ts_offset, st->time_base,
1727 st2->time_base);
1728 }
2cab6b48
MS
1729 }
1730 }
b20359f5
JA
1731 if (ret == -RTCP_BYE) {
1732 rt->nb_byes++;
1733
1734 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1735 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1736
1737 if (rt->nb_byes == rt->nb_rtsp_streams)
1738 return AVERROR_EOF;
1739 }
2cab6b48
MS
1740 }
1741 }
321259c1 1742end:
0e59034e
RB
1743 if (ret < 0)
1744 goto redo;
c8965800 1745 if (ret == 1)
0e59034e
RB
1746 /* more packets may follow, so we save the RTP context */
1747 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1748
1749 return ret;
1750}
44b70ce5 1751#endif /* CONFIG_RTPDEC */
0e59034e 1752
44b70ce5 1753#if CONFIG_SDP_DEMUXER
cb1fdc61 1754static int sdp_probe(AVProbeData *p1)
93ced3e8 1755{
0e1ceacd 1756 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1757
3fbd12d1 1758 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1759 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1760 if (p + sizeof("c=IN IP") - 1 < p_end &&
1761 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1762 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1763
c8965800 1764 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1765 if (++p >= p_end)
cb1fdc61 1766 break;
cb1fdc61
FB
1767 if (*p == '\r')
1768 p++;
1769 }
93ced3e8
FB
1770 return 0;
1771}
1772
c8965800 1773static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1774{
8b1ab7bf 1775 RTSPState *rt = s->priv_data;
93ced3e8
FB
1776 RTSPStream *rtsp_st;
1777 int size, i, err;
1778 char *content;
1779 char url[1024];
1780
57b5555c
MS
1781 if (!ff_network_init())
1782 return AVERROR(EIO);
1783
93ced3e8
FB
1784 /* read the whole sdp file */
1785 /* XXX: better loading */
1786 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1787 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1788 if (size <= 0) {
1789 av_free(content);
1790 return AVERROR_INVALIDDATA;
1791 }
1792 content[size] ='\0';
1793
f81c7ac7 1794 err = ff_sdp_parse(s, content);
93ced3e8 1795 av_free(content);
f81c7ac7 1796 if (err) goto fail;
93ced3e8
FB
1797
1798 /* open each RTP stream */
c8965800 1799 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1800 char namebuf[50];
8b1ab7bf 1801 rtsp_st = rt->rtsp_streams[i];
115329f1 1802
3fbd12d1
MS
1803 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1804 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1805 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1806 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1807 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1808 rtsp_st->sdp_ttl);
dbf30963 1809 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1810 err = AVERROR_INVALIDDATA;
1811 goto fail;
1812 }
ee0cb67f 1813 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1814 goto fail;
93ced3e8
FB
1815 }
1816 return 0;
c8965800 1817fail:
3307e6ea 1818 ff_rtsp_close_streams(s);
57b5555c 1819 ff_network_close();
93ced3e8
FB
1820 return err;
1821}
1822
93ced3e8
FB
1823static int sdp_read_close(AVFormatContext *s)
1824{
3307e6ea 1825 ff_rtsp_close_streams(s);
57b5555c 1826 ff_network_close();
93ced3e8
FB
1827 return 0;
1828}
1829
c6610a21 1830AVInputFormat ff_sdp_demuxer = {
93ced3e8 1831 "sdp",
bde15e74 1832 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1833 sizeof(RTSPState),
1834 sdp_probe,
1835 sdp_read_header,
0526c6f7 1836 ff_rtsp_fetch_packet,
93ced3e8
FB
1837 sdp_read_close,
1838};
44b70ce5 1839#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1840
44b70ce5 1841#if CONFIG_RTP_DEMUXER
44594cc7
MS
1842static int rtp_probe(AVProbeData *p)
1843{
1844 if (av_strstart(p->filename, "rtp:", NULL))
1845 return AVPROBE_SCORE_MAX;
1846 return 0;
1847}
1848
1849static int rtp_read_header(AVFormatContext *s,
1850 AVFormatParameters *ap)
1851{
1852 uint8_t recvbuf[1500];
1853 char host[500], sdp[500];
1854 int ret, port;
1855 URLContext* in = NULL;
1856 int payload_type;
1857 AVCodecContext codec;
1858 struct sockaddr_storage addr;
ae628ec1 1859 AVIOContext pb;
44594cc7
MS
1860 socklen_t addrlen = sizeof(addr);
1861
1862 if (!ff_network_init())
1863 return AVERROR(EIO);
1864
1865 ret = url_open(&in, s->filename, URL_RDONLY);
1866 if (ret)
1867 goto fail;
1868
1869 while (1) {
1870 ret = url_read(in, recvbuf, sizeof(recvbuf));
1871 if (ret == AVERROR(EAGAIN))
1872 continue;
1873 if (ret < 0)
1874 goto fail;
1875 if (ret < 12) {
1876 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1877 continue;
1878 }
1879
1880 if ((recvbuf[0] & 0xc0) != 0x80) {
1881 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1882 "received\n");
1883 continue;
1884 }
1885
1886 payload_type = recvbuf[1] & 0x7f;
1887 break;
1888 }
1889 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
1890 url_close(in);
1891 in = NULL;
1892
1893 memset(&codec, 0, sizeof(codec));
1894 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1895 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1896 "without an SDP file describing it\n",
1897 payload_type);
1898 goto fail;
1899 }
1900 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1901 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1902 "properly you need an SDP file "
1903 "describing it\n");
1904 }
1905
1906 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1907 NULL, 0, s->filename);
1908
1909 snprintf(sdp, sizeof(sdp),
1910 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1911 addr.ss_family == AF_INET ? 4 : 6, host,
1912 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1913 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1914 port, payload_type);
1915 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1916
e731b8d8 1917 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
1918 s->pb = &pb;
1919
1920 /* sdp_read_header initializes this again */
1921 ff_network_close();
1922
1923 ret = sdp_read_header(s, ap);
1924 s->pb = NULL;
1925 return ret;
1926
1927fail:
1928 if (in)
1929 url_close(in);
1930 ff_network_close();
1931 return ret;
1932}
1933
c6610a21 1934AVInputFormat ff_rtp_demuxer = {
44594cc7
MS
1935 "rtp",
1936 NULL_IF_CONFIG_SMALL("RTP input format"),
1937 sizeof(RTSPState),
1938 rtp_probe,
1939 rtp_read_header,
0526c6f7 1940 ff_rtsp_fetch_packet,
44594cc7
MS
1941 sdp_read_close,
1942 .flags = AVFMT_NOFILE,
1943};
44b70ce5 1944#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1945