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