avio: make url_filesize() internal.
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav 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 *
2912e87a 12 * Libav 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
2912e87a 18 * License along with Libav; 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"
5652bb94 45#include "url.h"
4934884a 46
1617ad97 47//#define DEBUG
b6892136 48//#define DEBUG_RTP_TCP
1617ad97 49
a8475bbd 50/* Timeout values for socket poll, in ms,
9cba6f5f 51 * and read_packet(), in seconds */
a8475bbd 52#define POLL_TIMEOUT_MS 100
9cba6f5f 53#define READ_PACKET_TIMEOUT_S 10
a8475bbd 54#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 55#define SDP_MAX_SIZE 16384
96a7c975 56#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
9cba6f5f 57
1ef36a70
RB
58static void get_word_until_chars(char *buf, int buf_size,
59 const char *sep, const char **pp)
1617ad97
FB
60{
61 const char *p;
62 char *q;
63
64 p = *pp;
30619e6e 65 p += strspn(p, SPACE_CHARS);
1617ad97
FB
66 q = buf;
67 while (!strchr(sep, *p) && *p != '\0') {
68 if ((q - buf) < buf_size - 1)
69 *q++ = *p;
70 p++;
71 }
72 if (buf_size > 0)
73 *q = '\0';
74 *pp = p;
75}
76
1ef36a70
RB
77static void get_word_sep(char *buf, int buf_size, const char *sep,
78 const char **pp)
1617ad97 79{
1ef36a70
RB
80 if (**pp == '/') (*pp)++;
81 get_word_until_chars(buf, buf_size, sep, pp);
82}
1617ad97 83
1ef36a70
RB
84static void get_word(char *buf, int buf_size, const char **pp)
85{
86 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
87}
88
8bf0f969
MS
89/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
90 * and end time.
91 * Used for seeking in the rtp stream.
92 */
93static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
94{
95 char buf[256];
96
97 p += strspn(p, SPACE_CHARS);
98 if (!av_stristart(p, "npt=", &p))
99 return;
100
101 *start = AV_NOPTS_VALUE;
102 *end = AV_NOPTS_VALUE;
103
104 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 105 av_parse_time(start, buf, 1);
8bf0f969
MS
106 if (*p == '-') {
107 p++;
108 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 109 av_parse_time(end, buf, 1);
8bf0f969
MS
110 }
111// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
112// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
113}
114
115static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
116{
117 struct addrinfo hints, *ai = NULL;
118 memset(&hints, 0, sizeof(hints));
119 hints.ai_flags = AI_NUMERICHOST;
120 if (getaddrinfo(buf, NULL, &hints, &ai))
121 return -1;
122 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
123 freeaddrinfo(ai);
124 return 0;
125}
126
44b70ce5 127#if CONFIG_RTPDEC
003eb642
MS
128static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
129 RTSPStream *rtsp_st, AVCodecContext *codec)
130{
131 if (!handler)
132 return;
133 codec->codec_id = handler->codec_id;
134 rtsp_st->dynamic_handler = handler;
135 if (handler->open)
136 rtsp_st->dynamic_protocol_context = handler->open();
137}
138
c8965800 139/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 140static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 141 AVStream *st, RTSPStream *rtsp_st,
c8965800 142 int payload_type, const char *p)
93ced3e8 143{
86b6e387 144 AVCodecContext *codec = st->codec;
93ced3e8 145 char buf[256];
d1ccf0e0
RD
146 int i;
147 AVCodec *c;
7b49ce2e 148 const char *c_name;
93ced3e8 149
d1ccf0e0 150 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
151 * see if we can handle this kind of payload.
152 * The space should normally not be there but some Real streams or
153 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
154 * have a trailing space. */
155 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 156 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
157 RTPDynamicProtocolHandler *handler =
158 ff_rtp_handler_find_by_name(buf, codec->codec_type);
159 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
160 /* If no dynamic handler was found, check with the list of standard
161 * allocated types, if such a stream for some reason happens to
162 * use a private payload type. This isn't handled in rtpdec.c, since
163 * the format name from the rtpmap line never is passed into rtpdec. */
164 if (!rtsp_st->dynamic_handler)
165 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 166 } else {
c8965800
RB
167 /* We are in a standard case
168 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 169 /* search into AVRtpPayloadTypes[] */
7ed19d7f 170 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
171 }
172
173 c = avcodec_find_decoder(codec->codec_id);
174 if (c && c->name)
7b49ce2e 175 c_name = c->name;
d1ccf0e0 176 else
170870b7 177 c_name = "(null)";
d1ccf0e0 178
7515ed0c
RB
179 get_word_sep(buf, sizeof(buf), "/", &p);
180 i = atoi(buf);
181 switch (codec->codec_type) {
72415b2a 182 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
183 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
184 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
185 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
186 if (i > 0) {
187 codec->sample_rate = i;
86b6e387 188 av_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
189 get_word_sep(buf, sizeof(buf), "/", &p);
190 i = atoi(buf);
191 if (i > 0)
192 codec->channels = i;
193 // TODO: there is a bug here; if it is a mono stream, and
194 // less than 22000Hz, faad upconverts to stereo and twice
195 // the frequency. No problem, but the sample rate is being
196 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 197 }
7515ed0c
RB
198 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
199 codec->sample_rate);
200 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
201 codec->channels);
202 break;
72415b2a 203 case AVMEDIA_TYPE_VIDEO:
7515ed0c 204 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387
MS
205 if (i > 0)
206 av_set_pts_info(st, 32, 1, i);
7515ed0c
RB
207 break;
208 default:
209 break;
210 }
211 return 0;
93ced3e8
FB
212}
213
c2bfd816 214/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
215 * is broken out as a function because it is used in rtp_h264.c, which is
216 * forthcoming. */
3307e6ea 217int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 218 char *value, int value_size)
d0deedcb 219{
30619e6e 220 *p += strspn(*p, SPACE_CHARS);
c8965800 221 if (**p) {
d0deedcb
RM
222 get_word_sep(attr, attr_size, "=", p);
223 if (**p == '=')
224 (*p)++;
225 get_word_sep(value, value_size, ";", p);
226 if (**p == ';')
227 (*p)++;
228 return 1;
229 }
230 return 0;
231}
232
93ced3e8
FB
233typedef struct SDPParseState {
234 /* SDP only */
3fbd12d1 235 struct sockaddr_storage default_ip;
c8965800
RB
236 int default_ttl;
237 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
238} SDPParseState;
239
240static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
241 int letter, const char *buf)
242{
8b1ab7bf 243 RTSPState *rt = s->priv_data;
1617ad97
FB
244 char buf1[64], st_type[64];
245 const char *p;
72415b2a 246 enum AVMediaType codec_type;
fb65d2ca 247 int payload_type, i;
1617ad97
FB
248 AVStream *st;
249 RTSPStream *rtsp_st;
3fbd12d1 250 struct sockaddr_storage sdp_ip;
93ced3e8
FB
251 int ttl;
252
dfd2a005 253 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
254
255 p = buf;
cb760a47
RB
256 if (s1->skip_media && letter != 'm')
257 return;
c8965800 258 switch (letter) {
93ced3e8
FB
259 case 'c':
260 get_word(buf1, sizeof(buf1), &p);
261 if (strcmp(buf1, "IN") != 0)
262 return;
263 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 264 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
265 return;
266 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 267 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
268 return;
269 ttl = 16;
270 if (*p == '/') {
271 p++;
272 get_word_sep(buf1, sizeof(buf1), "/", &p);
273 ttl = atoi(buf1);
274 }
275 if (s->nb_streams == 0) {
276 s1->default_ip = sdp_ip;
277 s1->default_ttl = ttl;
278 } else {
d9c0510e 279 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
280 rtsp_st->sdp_ip = sdp_ip;
281 rtsp_st->sdp_ttl = ttl;
282 }
283 break;
1617ad97 284 case 's':
2ef6c124 285 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
286 break;
287 case 'i':
288 if (s->nb_streams == 0) {
2ef6c124 289 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
290 break;
291 }
292 break;
293 case 'm':
294 /* new stream */
cb760a47 295 s1->skip_media = 0;
1617ad97
FB
296 get_word(st_type, sizeof(st_type), &p);
297 if (!strcmp(st_type, "audio")) {
72415b2a 298 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 299 } else if (!strcmp(st_type, "video")) {
72415b2a 300 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 301 } else if (!strcmp(st_type, "application")) {
72415b2a 302 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 303 } else {
cb760a47 304 s1->skip_media = 1;
1617ad97
FB
305 return;
306 }
1617ad97
FB
307 rtsp_st = av_mallocz(sizeof(RTSPStream));
308 if (!rtsp_st)
309 return;
8b1ab7bf
FB
310 rtsp_st->stream_index = -1;
311 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
312
313 rtsp_st->sdp_ip = s1->default_ip;
314 rtsp_st->sdp_ttl = s1->default_ttl;
315
93ced3e8
FB
316 get_word(buf1, sizeof(buf1), &p); /* port */
317 rtsp_st->sdp_port = atoi(buf1);
318
319 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 320
93ced3e8
FB
321 /* XXX: handle list of formats */
322 get_word(buf1, sizeof(buf1), &p); /* format list */
323 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 324
7ed19d7f 325 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
326 /* no corresponding stream */
327 } else {
b2dd842d 328 st = av_new_stream(s, rt->nb_rtsp_streams - 1);
8b1ab7bf
FB
329 if (!st)
330 return;
8b1ab7bf 331 rtsp_st->stream_index = st->index;
01f4895c 332 st->codec->codec_type = codec_type;
d1ccf0e0 333 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 334 RTPDynamicProtocolHandler *handler;
8b1ab7bf 335 /* if standard payload type, we can find the codec right now */
bf6d9818 336 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
337 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
338 st->codec->sample_rate > 0)
86b6e387 339 av_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
340 /* Even static payload types may need a custom depacketizer */
341 handler = ff_rtp_handler_find_by_id(
342 rtsp_st->sdp_payload_type, st->codec->codec_type);
343 init_rtp_handler(handler, rtsp_st, st->codec);
8b1ab7bf
FB
344 }
345 }
1617ad97 346 /* put a default control url */
00eb13e0 347 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 348 sizeof(rtsp_st->control_url));
1617ad97
FB
349 break;
350 case 'a':
00eb13e0
AS
351 if (av_strstart(p, "control:", &p)) {
352 if (s->nb_streams == 0) {
353 if (!strncmp(p, "rtsp://", 7))
354 av_strlcpy(rt->control_uri, p,
355 sizeof(rt->control_uri));
356 } else {
0b6a7ff4
MS
357 char proto[32];
358 /* get the control url */
d9c0510e 359 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 360
0b6a7ff4
MS
361 /* XXX: may need to add full url resolution */
362 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
363 NULL, NULL, 0, p);
364 if (proto[0] == '\0') {
365 /* relative control URL */
366 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
367 av_strlcat(rtsp_st->control_url, "/",
368 sizeof(rtsp_st->control_url));
369 av_strlcat(rtsp_st->control_url, p,
370 sizeof(rtsp_st->control_url));
371 } else
372 av_strlcpy(rtsp_st->control_url, p,
373 sizeof(rtsp_st->control_url));
00eb13e0 374 }
83d14c85 375 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 376 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 377 get_word(buf1, sizeof(buf1), &p);
93ced3e8 378 payload_type = atoi(buf1);
83d14c85 379 st = s->streams[s->nb_streams - 1];
d9c0510e 380 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
86b6e387 381 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
7fc8ac7f
JA
382 } else if (av_strstart(p, "fmtp:", &p) ||
383 av_strstart(p, "framesize:", &p)) {
93ced3e8 384 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
385 // let dynamic protocol handlers have a stab at the line.
386 get_word(buf1, sizeof(buf1), &p);
387 payload_type = atoi(buf1);
d9c0510e
MS
388 for (i = 0; i < rt->nb_rtsp_streams; i++) {
389 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
390 if (rtsp_st->sdp_payload_type == payload_type &&
391 rtsp_st->dynamic_handler &&
392 rtsp_st->dynamic_handler->parse_sdp_a_line)
393 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
394 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 395 }
c8965800 396 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
397 int64_t start, end;
398
399 // this is so that seeking on a streamed file can work.
400 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
401 s->start_time = start;
402 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
403 s->duration = (end == AV_NOPTS_VALUE) ?
404 AV_NOPTS_VALUE : end - start;
119b4668
RB
405 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
406 if (atoi(p) == 1)
407 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
408 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
409 s->nb_streams > 0) {
410 st = s->streams[s->nb_streams - 1];
411 st->codec->sample_rate = atoi(p);
1a30d541
RB
412 } else {
413 if (rt->server_type == RTSP_SERVER_WMS)
414 ff_wms_parse_sdp_a_line(s, p);
415 if (s->nb_streams > 0) {
c4a3d032
RB
416 if (rt->server_type == RTSP_SERVER_REAL)
417 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
418
d9c0510e 419 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
c4a3d032
RB
420 if (rtsp_st->dynamic_handler &&
421 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
422 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
423 s->nb_streams - 1,
c4a3d032 424 rtsp_st->dynamic_protocol_context, buf);
1a30d541 425 }
1617ad97
FB
426 }
427 break;
428 }
429}
430
a8475bbd
LB
431/**
432 * Parse the sdp description and allocate the rtp streams and the
433 * pollfd array used for udp ones.
434 */
435
0526c6f7 436int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 437{
a8475bbd 438 RTSPState *rt = s->priv_data;
1617ad97
FB
439 const char *p;
440 int letter;
9211bcdd
RB
441 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
442 * contain long SDP lines containing complete ASF Headers (several
443 * kB) or arrays of MDPR (RM stream descriptor) headers plus
444 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
445 * buffer is large.
446 *
afcea58c
JA
447 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
448 * in rtpdec_xiph.c. */
373afbaf 449 char buf[16384], *q;
93ced3e8 450 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 451
93ced3e8 452 memset(s1, 0, sizeof(SDPParseState));
1617ad97 453 p = content;
c8965800 454 for (;;) {
30619e6e 455 p += strspn(p, SPACE_CHARS);
1617ad97
FB
456 letter = *p;
457 if (letter == '\0')
458 break;
459 p++;
460 if (*p != '=')
461 goto next_line;
462 p++;
463 /* get the content */
464 q = buf;
b6892136 465 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
466 if ((q - buf) < sizeof(buf) - 1)
467 *q++ = *p;
468 p++;
469 }
470 *q = '\0';
93ced3e8 471 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
472 next_line:
473 while (*p != '\n' && *p != '\0')
474 p++;
475 if (*p == '\n')
476 p++;
477 }
a8475bbd
LB
478 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
479 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
480 return 0;
481}
44b70ce5 482#endif /* CONFIG_RTPDEC */
1617ad97 483
93e7490e
MS
484void ff_rtsp_undo_setup(AVFormatContext *s)
485{
486 RTSPState *rt = s->priv_data;
487 int i;
488
489 for (i = 0; i < rt->nb_rtsp_streams; i++) {
490 RTSPStream *rtsp_st = rt->rtsp_streams[i];
491 if (!rtsp_st)
492 continue;
493 if (rtsp_st->transport_priv) {
494 if (s->oformat) {
495 AVFormatContext *rtpctx = rtsp_st->transport_priv;
496 av_write_trailer(rtpctx);
497 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
498 uint8_t *ptr;
6dc7d80d 499 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
500 av_free(ptr);
501 } else {
22a3212e 502 avio_close(rtpctx->pb);
93e7490e 503 }
b22dbb29 504 avformat_free_context(rtpctx);
93e7490e
MS
505 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
506 ff_rdt_parse_close(rtsp_st->transport_priv);
507 else if (CONFIG_RTPDEC)
508 rtp_parse_close(rtsp_st->transport_priv);
509 }
510 rtsp_st->transport_priv = NULL;
511 if (rtsp_st->rtp_handle)
e52a9145 512 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
513 rtsp_st->rtp_handle = NULL;
514 }
515}
516
1ced9da3 517/* close and free RTSP streams */
3307e6ea 518void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 519{
52aa4338 520 RTSPState *rt = s->priv_data;
1ced9da3
LA
521 int i;
522 RTSPStream *rtsp_st;
523
93e7490e 524 ff_rtsp_undo_setup(s);
c8965800 525 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
526 rtsp_st = rt->rtsp_streams[i];
527 if (rtsp_st) {
1ced9da3 528 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
529 rtsp_st->dynamic_handler->close(
530 rtsp_st->dynamic_protocol_context);
ea7f0807 531 av_free(rtsp_st);
1ced9da3
LA
532 }
533 }
534 av_free(rt->rtsp_streams);
535 if (rt->asf_ctx) {
536 av_close_input_stream (rt->asf_ctx);
537 rt->asf_ctx = NULL;
538 }
a8475bbd 539 av_free(rt->p);
96a7c975 540 av_free(rt->recvbuf);
1ced9da3
LA
541}
542
c8965800 543static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
544{
545 RTSPState *rt = s->priv_data;
546 AVStream *st = NULL;
547
548 /* open the RTP context */
549 if (rtsp_st->stream_index >= 0)
550 st = s->streams[rtsp_st->stream_index];
551 if (!st)
552 s->ctx_flags |= AVFMTCTX_NOHEADER;
553
44b70ce5 554 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
555 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
556 rtsp_st->rtp_handle,
557 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 558 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 559 rtsp_st->rtp_handle = NULL;
44b70ce5 560 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
561 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
562 rtsp_st->dynamic_protocol_context,
563 rtsp_st->dynamic_handler);
44b70ce5 564 else if (CONFIG_RTPDEC)
1ced9da3 565 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
566 rtsp_st->sdp_payload_type,
567 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
568 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
569
570 if (!rtsp_st->transport_priv) {
571 return AVERROR(ENOMEM);
44b70ce5 572 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 573 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
574 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
575 rtsp_st->dynamic_protocol_context,
576 rtsp_st->dynamic_handler);
577 }
578 }
579
580 return 0;
581}
582
6f5a3d0a 583#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
584static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
585{
586 const char *p;
587 int v;
588
589 p = *pp;
30619e6e 590 p += strspn(p, SPACE_CHARS);
1617ad97
FB
591 v = strtol(p, (char **)&p, 10);
592 if (*p == '-') {
593 p++;
594 *min_ptr = v;
595 v = strtol(p, (char **)&p, 10);
596 *max_ptr = v;
597 } else {
598 *min_ptr = v;
599 *max_ptr = v;
600 }
601 *pp = p;
602}
603
604/* XXX: only one transport specification is parsed */
a9e534d5 605static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
606{
607 char transport_protocol[16];
608 char profile[16];
609 char lower_transport[16];
610 char parameter[16];
611 RTSPTransportField *th;
612 char buf[256];
115329f1 613
1617ad97 614 reply->nb_transports = 0;
115329f1 615
c8965800 616 for (;;) {
30619e6e 617 p += strspn(p, SPACE_CHARS);
1617ad97
FB
618 if (*p == '\0')
619 break;
620
621 th = &reply->transports[reply->nb_transports];
622
115329f1 623 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 624 "/", &p);
e1502118 625 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
626 get_word_sep(profile, sizeof(profile), "/;,", &p);
627 lower_transport[0] = '\0';
628 /* rtp/avp/<protocol> */
629 if (*p == '/') {
7ecc634e
LB
630 get_word_sep(lower_transport, sizeof(lower_transport),
631 ";,", &p);
119b4668
RB
632 }
633 th->transport = RTSP_TRANSPORT_RTP;
634 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
635 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 636 /* x-pn-tng/<protocol> */
e1502118
LB
637 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
638 profile[0] = '\0';
119b4668 639 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 640 }
b6892136 641 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 642 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 643 else
90abbdba 644 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 645
1617ad97
FB
646 if (*p == ';')
647 p++;
648 /* get each parameter */
649 while (*p != '\0' && *p != ',') {
650 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
651 if (!strcmp(parameter, "port")) {
652 if (*p == '=') {
653 p++;
654 rtsp_parse_range(&th->port_min, &th->port_max, &p);
655 }
656 } else if (!strcmp(parameter, "client_port")) {
657 if (*p == '=') {
658 p++;
115329f1 659 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
660 &th->client_port_max, &p);
661 }
662 } else if (!strcmp(parameter, "server_port")) {
663 if (*p == '=') {
664 p++;
115329f1 665 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
666 &th->server_port_max, &p);
667 }
668 } else if (!strcmp(parameter, "interleaved")) {
669 if (*p == '=') {
670 p++;
115329f1 671 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
672 &th->interleaved_max, &p);
673 }
674 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
675 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
676 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
677 } else if (!strcmp(parameter, "ttl")) {
678 if (*p == '=') {
679 p++;
680 th->ttl = strtol(p, (char **)&p, 10);
681 }
682 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
683 if (*p == '=') {
684 p++;
685 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 686 get_sockaddr(buf, &th->destination);
1617ad97 687 }
619298a8
JW
688 } else if (!strcmp(parameter, "source")) {
689 if (*p == '=') {
690 p++;
691 get_word_sep(buf, sizeof(buf), ";,", &p);
692 av_strlcpy(th->source, buf, sizeof(th->source));
693 }
1617ad97 694 }
619298a8 695
1617ad97
FB
696 while (*p != ';' && *p != '\0' && *p != ',')
697 p++;
698 if (*p == ';')
699 p++;
700 }
701 if (*p == ',')
702 p++;
703
704 reply->nb_transports++;
705 }
706}
707
29db7c3a
MS
708static void handle_rtp_info(RTSPState *rt, const char *url,
709 uint32_t seq, uint32_t rtptime)
710{
711 int i;
712 if (!rtptime || !url[0])
713 return;
714 if (rt->transport != RTSP_TRANSPORT_RTP)
715 return;
716 for (i = 0; i < rt->nb_rtsp_streams; i++) {
717 RTSPStream *rtsp_st = rt->rtsp_streams[i];
718 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
719 if (!rtpctx)
720 continue;
721 if (!strcmp(rtsp_st->control_url, url)) {
722 rtpctx->base_timestamp = rtptime;
723 break;
724 }
725 }
726}
727
728static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
729{
730 int read = 0;
731 char key[20], value[1024], url[1024] = "";
732 uint32_t seq = 0, rtptime = 0;
733
734 for (;;) {
735 p += strspn(p, SPACE_CHARS);
736 if (!*p)
737 break;
738 get_word_sep(key, sizeof(key), "=", &p);
739 if (*p != '=')
740 break;
741 p++;
742 get_word_sep(value, sizeof(value), ";, ", &p);
743 read++;
744 if (!strcmp(key, "url"))
745 av_strlcpy(url, value, sizeof(url));
746 else if (!strcmp(key, "seq"))
747 seq = strtol(value, NULL, 10);
748 else if (!strcmp(key, "rtptime"))
749 rtptime = strtol(value, NULL, 10);
750 if (*p == ',') {
751 handle_rtp_info(rt, url, seq, rtptime);
752 url[0] = '\0';
753 seq = rtptime = 0;
754 read = 0;
755 }
756 if (*p)
757 p++;
758 }
759 if (read > 0)
760 handle_rtp_info(rt, url, seq, rtptime);
761}
762
2626308a 763void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 764 RTSPState *rt, const char *method)
1617ad97
FB
765{
766 const char *p;
767
768 /* NOTE: we do case independent match for broken servers */
769 p = buf;
f7d78f36 770 if (av_stristart(p, "Session:", &p)) {
30e79845 771 int t;
1617ad97 772 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
773 if (av_stristart(p, ";timeout=", &p) &&
774 (t = strtol(p, NULL, 10)) > 0) {
775 reply->timeout = t;
776 }
f7d78f36 777 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 778 reply->content_length = strtol(p, NULL, 10);
f7d78f36 779 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 780 rtsp_parse_transport(reply, p);
f7d78f36 781 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 782 reply->seq = strtol(p, NULL, 10);
f7d78f36 783 } else if (av_stristart(p, "Range:", &p)) {
31693e00 784 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 785 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 786 p += strspn(p, SPACE_CHARS);
30aa6aed 787 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 788 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 789 p += strspn(p, SPACE_CHARS);
7a86bafa 790 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
791 } else if (av_stristart(p, "Notice:", &p) ||
792 av_stristart(p, "X-Notice:", &p)) {
793 reply->notice = strtol(p, NULL, 10);
d243ba30 794 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 795 p += strspn(p, SPACE_CHARS);
d243ba30 796 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 797 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 798 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
799 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
800 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 801 p += strspn(p, SPACE_CHARS);
acc9ed14 802 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 803 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 804 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
805 if (method && !strcmp(method, "DESCRIBE"))
806 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
807 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
808 p += strspn(p, SPACE_CHARS);
809 if (method && !strcmp(method, "PLAY"))
810 rtsp_parse_rtp_info(rt, p);
1617ad97
FB
811 }
812}
813
b7b8fc34 814/* skip a RTP/TCP interleaved packet */
ec55edba 815void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
816{
817 RTSPState *rt = s->priv_data;
818 int ret, len, len1;
819 uint8_t buf[1024];
820
dce37564 821 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
822 if (ret != 3)
823 return;
80fb8234 824 len = AV_RB16(buf + 1);
67c9cd69 825
dfd2a005 826 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 827
b7b8fc34
FB
828 /* skip payload */
829 while (len > 0) {
830 len1 = len;
831 if (len1 > sizeof(buf))
832 len1 = sizeof(buf);
dce37564 833 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
834 if (ret != len1)
835 return;
836 len -= len1;
837 }
838}
1617ad97 839
3307e6ea 840int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 841 unsigned char **content_ptr,
3df54c6b 842 int return_on_interleaved_data, const char *method)
1617ad97
FB
843{
844 RTSPState *rt = s->priv_data;
845 char buf[4096], buf1[1024], *q;
846 unsigned char ch;
847 const char *p;
7e726132 848 int ret, content_length, line_count = 0;
1617ad97
FB
849 unsigned char *content = NULL;
850
d541a7d2 851 memset(reply, 0, sizeof(*reply));
1617ad97 852
1617ad97 853 /* parse reply (XXX: use buffers) */
1617ad97 854 rt->last_reply[0] = '\0';
c8965800 855 for (;;) {
1617ad97 856 q = buf;
c8965800 857 for (;;) {
dce37564 858 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 859#ifdef DEBUG_RTP_TCP
dfd2a005 860 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
861#endif
862 if (ret != 1)
2401660d 863 return AVERROR_EOF;
1617ad97
FB
864 if (ch == '\n')
865 break;
b7b8fc34
FB
866 if (ch == '$') {
867 /* XXX: only parse it if first char on line ? */
7e726132
RB
868 if (return_on_interleaved_data) {
869 return 1;
870 } else
ec55edba 871 ff_rtsp_skip_packet(s);
b7b8fc34 872 } else if (ch != '\r') {
1617ad97
FB
873 if ((q - buf) < sizeof(buf) - 1)
874 *q++ = ch;
875 }
876 }
877 *q = '\0';
67c9cd69 878
dfd2a005 879 av_dlog(s, "line='%s'\n", buf);
67c9cd69 880
1617ad97
FB
881 /* test if last line */
882 if (buf[0] == '\0')
883 break;
884 p = buf;
885 if (line_count == 0) {
886 /* get reply code */
887 get_word(buf1, sizeof(buf1), &p);
888 get_word(buf1, sizeof(buf1), &p);
889 reply->status_code = atoi(buf1);
d93fdcbf 890 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1617ad97 891 } else {
77223c53 892 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
893 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
894 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
895 }
896 line_count++;
897 }
115329f1 898
1617ad97 899 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 900 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 901
1617ad97
FB
902 content_length = reply->content_length;
903 if (content_length > 0) {
904 /* leave some room for a trailing '\0' (useful for simple parsing) */
905 content = av_malloc(content_length + 1);
dce37564 906 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
907 content[content_length] = '\0';
908 }
909 if (content_ptr)
910 *content_ptr = content;
e2e2e7dd
AB
911 else
912 av_free(content);
7e726132 913
7ed8211b
LB
914 if (rt->seq != reply->seq) {
915 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
916 rt->seq, reply->seq);
917 }
918
fccb1770
RB
919 /* EOS */
920 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
921 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 922 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 923 rt->state = RTSP_STATE_IDLE;
c8965800 924 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 925 return AVERROR(EIO); /* data or server error */
c8965800 926 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
927 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
928 return AVERROR(EPERM);
929
7e726132 930 return 0;
1617ad97
FB
931}
932
57c4d01e
DEP
933/**
934 * Send a command to the RTSP server without waiting for the reply.
935 *
936 * @param s RTSP (de)muxer context
937 * @param method the method for the request
938 * @param url the target url for the request
939 * @param headers extra header lines to include in the request
940 * @param send_content if non-null, the data to send as request body content
941 * @param send_content_length the length of the send_content data, or 0 if
942 * send_content is null
943 *
944 * @return zero if success, nonzero otherwise
945 */
946static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
947 const char *method, const char *url,
948 const char *headers,
949 const unsigned char *send_content,
950 int send_content_length)
29b9f58b
RB
951{
952 RTSPState *rt = s->priv_data;
f5d33f52
JA
953 char buf[4096], *out_buf;
954 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 955
f5d33f52
JA
956 /* Add in RTSP headers */
957 out_buf = buf;
29b9f58b 958 rt->seq++;
b17d11c6
MS
959 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
960 if (headers)
961 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 962 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
963 if (rt->session_id[0] != '\0' && (!headers ||
964 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 965 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 966 }
aa8bf2fb
MS
967 if (rt->auth[0]) {
968 char *str = ff_http_auth_create_response(&rt->auth_state,
969 rt->auth, url, method);
970 if (str)
971 av_strlcat(buf, str, sizeof(buf));
972 av_free(str);
973 }
dfd017bf
MS
974 if (send_content_length > 0 && send_content)
975 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 976 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 977
f5d33f52
JA
978 /* base64 encode rtsp if tunneling */
979 if (rt->control_transport == RTSP_MODE_TUNNEL) {
980 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
981 out_buf = base64buf;
982 }
983
dfd2a005 984 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 985
925e908b 986 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
987 if (send_content_length > 0 && send_content) {
988 if (rt->control_transport == RTSP_MODE_TUNNEL) {
989 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
990 "with content data not supported\n");
991 return AVERROR_PATCHWELCOME;
992 }
925e908b 993 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 994 }
30e79845 995 rt->last_cmd_time = av_gettime();
d0382374
JA
996
997 return 0;
30e79845
RB
998}
999
d0382374 1000int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1001 const char *url, const char *headers)
dfd017bf 1002{
d0382374 1003 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1004}
1005
d0382374 1006int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1007 const char *headers, RTSPMessageHeader *reply,
1008 unsigned char **content_ptr)
30e79845 1009{
d0382374 1010 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1011 content_ptr, NULL, 0);
29b9f58b
RB
1012}
1013
d0382374 1014int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1015 const char *method, const char *url,
1016 const char *header,
1017 RTSPMessageHeader *reply,
1018 unsigned char **content_ptr,
1019 const unsigned char *send_content,
1020 int send_content_length)
dfd017bf 1021{
30af0779
MS
1022 RTSPState *rt = s->priv_data;
1023 HTTPAuthType cur_auth_type;
d0382374 1024 int ret;
30af0779
MS
1025
1026retry:
1027 cur_auth_type = rt->auth_state.auth_type;
d0382374 1028 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1029 send_content,
1030 send_content_length)))
d0382374 1031 return ret;
dfd017bf 1032
3df54c6b 1033 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1034 return ret;
30af0779
MS
1035
1036 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1037 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1038 goto retry;
d0382374 1039
bf55cf19 1040 if (reply->status_code > 400){
d93fdcbf 1041 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1042 method,
d93fdcbf
LB
1043 reply->status_code,
1044 reply->reason);
bf55cf19
LB
1045 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1046 }
1047
d0382374 1048 return 0;
dfd017bf
MS
1049}
1050
53620bba 1051/**
32e543f8 1052 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1053 */
fef5649a 1054int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1055 int lower_transport, const char *real_challenge)
1617ad97
FB
1056{
1057 RTSPState *rt = s->priv_data;
f830c9a4 1058 int rtx, j, i, err, interleave = 0;
1617ad97 1059 RTSPStream *rtsp_st;
a9e534d5 1060 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1061 char cmd[2048];
e9dea59f
RB
1062 const char *trans_pref;
1063
119b4668 1064 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1065 trans_pref = "x-pn-tng";
1066 else
1067 trans_pref = "RTP/AVP";
115329f1 1068
30e79845
RB
1069 /* default timeout: 1 minute */
1070 rt->timeout = 60;
1071
1617ad97
FB
1072 /* for each stream, make the setup request */
1073 /* XXX: we assume the same server is used for the control of each
c8965800 1074 * RTSP stream */
d1ccf0e0 1075
c8965800 1076 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1077 char transport[2048];
1078
f830c9a4
RB
1079 /**
1080 * WMS serves all UDP data over a single connection, the RTX, which
1081 * isn't necessarily the first in the SDP but has to be the first
1082 * to be set up, else the second/third SETUP will fail with a 461.
1083 */
1084 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1085 rt->server_type == RTSP_SERVER_WMS) {
1086 if (i == 0) {
1087 /* rtx first */
1088 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1089 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1090 if (len >= 4 &&
c8965800
RB
1091 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1092 "/rtx"))
f830c9a4
RB
1093 break;
1094 }
1095 if (rtx == rt->nb_rtsp_streams)
1096 return -1; /* no RTX found */
1097 rtsp_st = rt->rtsp_streams[rtx];
1098 } else
1099 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1100 } else
2fea9650 1101 rtsp_st = rt->rtsp_streams[i];
1617ad97 1102
1617ad97 1103 /* RTP/UDP */
90abbdba 1104 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1105 char buf[256];
85fb7b34 1106
f830c9a4
RB
1107 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1108 port = reply->transports[0].client_port_min;
1109 goto have_port;
1110 }
1111
85fb7b34 1112 /* first try in specified port range */
d1ccf0e0 1113 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1114 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1115 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1116 "?localport=%d", j);
c8965800
RB
1117 /* we will use two ports per rtp stream (rtp and rtcp) */
1118 j += 2;
0589da0a 1119 if (ffurl_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1120 goto rtp_opened;
1121 }
1617ad97 1122 }
85fb7b34 1123
c8965800
RB
1124#if 0
1125 /* then try on any port */
0589da0a 1126 if (ffurl_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
c8965800
RB
1127 err = AVERROR_INVALIDDATA;
1128 goto fail;
1129 }
a3b058b7
MS
1130#else
1131 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1132 err = AVERROR(EIO);
1133 goto fail;
c8965800 1134#endif
85fb7b34
FB
1135
1136 rtp_opened:
67f34aaa 1137 port = rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1138 have_port:
0ad306bc 1139 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1140 "%s/UDP;", trans_pref);
1141 if (rt->server_type != RTSP_SERVER_REAL)
1142 av_strlcat(transport, "unicast;", sizeof(transport));
1143 av_strlcatf(transport, sizeof(transport),
1144 "client_port=%d", port);
f830c9a4
RB
1145 if (rt->transport == RTSP_TRANSPORT_RTP &&
1146 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1147 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1148 }
1149
1150 /* RTP/TCP */
90abbdba 1151 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1152 /** For WMS streams, the application streams are only used for
1153 * UDP. When trying to set it up for TCP streams, the server
1154 * will return an error. Therefore, we skip those streams. */
1155 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1156 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1157 AVMEDIA_TYPE_DATA)
090438cc 1158 continue;
0ad306bc 1159 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1160 "%s/TCP;", trans_pref);
895678f8 1161 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1162 av_strlcat(transport, "unicast;", sizeof(transport));
1163 av_strlcatf(transport, sizeof(transport),
1164 "interleaved=%d-%d",
1165 interleave, interleave + 1);
1166 interleave += 2;
1617ad97
FB
1167 }
1168
90abbdba 1169 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1170 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1171 "%s/UDP;multicast", trans_pref);
1617ad97 1172 }
69adcc4f
MS
1173 if (s->oformat) {
1174 av_strlcat(transport, ";mode=receive", sizeof(transport));
1175 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1176 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1177 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1178 snprintf(cmd, sizeof(cmd),
b6892136 1179 "Transport: %s\r\n",
b17d11c6 1180 transport);
44b70ce5 1181 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1182 char real_res[41], real_csum[9];
1183 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1184 real_challenge);
1185 av_strlcatf(cmd, sizeof(cmd),
1186 "If-Match: %s\r\n"
1187 "RealChallenge2: %s, sd=%s\r\n",
1188 rt->session_id, real_res, real_csum);
1189 }
b17d11c6 1190 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1191 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1192 err = 1;
1193 goto fail;
7e6ca34f
RB
1194 } else if (reply->status_code != RTSP_STATUS_OK ||
1195 reply->nb_transports != 1) {
1617ad97
FB
1196 err = AVERROR_INVALIDDATA;
1197 goto fail;
1198 }
1199
1200 /* XXX: same protocol for all streams is required */
1201 if (i > 0) {
119b4668
RB
1202 if (reply->transports[0].lower_transport != rt->lower_transport ||
1203 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1204 err = AVERROR_INVALIDDATA;
1205 goto fail;
1206 }
1207 } else {
90abbdba 1208 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1209 rt->transport = reply->transports[0].transport;
1617ad97
FB
1210 }
1211
8c579c1c
MS
1212 /* Fail if the server responded with another lower transport mode
1213 * than what we requested. */
1214 if (reply->transports[0].lower_transport != lower_transport) {
1215 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1216 err = AVERROR_INVALIDDATA;
1217 goto fail;
1617ad97
FB
1218 }
1219
90abbdba
RB
1220 switch(reply->transports[0].lower_transport) {
1221 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1222 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1223 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1224 break;
115329f1 1225
c8965800 1226 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1227 char url[1024], options[30] = "";
c8965800 1228
a92c30d7
MS
1229 if (rt->filter_source)
1230 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1231 /* Use source address if specified */
1232 if (reply->transports[0].source[0]) {
1233 ff_url_join(url, sizeof(url), "rtp", NULL,
1234 reply->transports[0].source,
a92c30d7 1235 reply->transports[0].server_port_min, options);
619298a8 1236 } else {
7bac991f 1237 ff_url_join(url, sizeof(url), "rtp", NULL, host,
a92c30d7 1238 reply->transports[0].server_port_min, options);
619298a8 1239 }
c8965800
RB
1240 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1241 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1242 err = AVERROR_INVALIDDATA;
1243 goto fail;
1617ad97 1244 }
9c8fa20d
MS
1245 /* Try to initialize the connection state in a
1246 * potential NAT router by sending dummy packets.
1247 * RTP/RTCP dummy packets are used for RDT, too.
1248 */
44b70ce5
MS
1249 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1250 CONFIG_RTPDEC)
9c8fa20d 1251 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1252 break;
c8965800
RB
1253 }
1254 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
7934b15d
MS
1255 char url[1024], namebuf[50];
1256 struct sockaddr_storage addr;
c8965800
RB
1257 int port, ttl;
1258
7934b15d
MS
1259 if (reply->transports[0].destination.ss_family) {
1260 addr = reply->transports[0].destination;
c8965800
RB
1261 port = reply->transports[0].port_min;
1262 ttl = reply->transports[0].ttl;
1263 } else {
7934b15d 1264 addr = rtsp_st->sdp_ip;
c8965800
RB
1265 port = rtsp_st->sdp_port;
1266 ttl = rtsp_st->sdp_ttl;
1267 }
7934b15d
MS
1268 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1269 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1270 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
57b5555c 1271 port, "?ttl=%d", ttl);
0589da0a 1272 if (ffurl_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
c8965800
RB
1273 err = AVERROR_INVALIDDATA;
1274 goto fail;
1617ad97
FB
1275 }
1276 break;
1277 }
c8965800 1278 }
d1ccf0e0 1279
ee0cb67f 1280 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1281 goto fail;
1617ad97
FB
1282 }
1283
30e79845
RB
1284 if (reply->timeout > 0)
1285 rt->timeout = reply->timeout;
1286
2e889ae4 1287 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1288 rt->need_subscription = 1;
1289
53620bba
RB
1290 return 0;
1291
1292fail:
aeb2de1c 1293 ff_rtsp_undo_setup(s);
53620bba
RB
1294 return err;
1295}
1296
b8c2c41d
JA
1297void ff_rtsp_close_connections(AVFormatContext *s)
1298{
1299 RTSPState *rt = s->priv_data;
e52a9145
AK
1300 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1301 ffurl_close(rt->rtsp_hd);
6217b645 1302 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1303}
1304
3307e6ea 1305int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1306{
1307 RTSPState *rt = s->priv_data;
921da217
LB
1308 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1309 char *option_list, *option, *filename;
03f8fc08 1310 int port, err, tcp_fd;
354b7573 1311 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1312 int lower_transport_mask = 0;
2762a7a2 1313 char real_challenge[64] = "";
03f8fc08
MS
1314 struct sockaddr_storage peer;
1315 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1316
1317 if (!ff_network_init())
1318 return AVERROR(EIO);
c8965800 1319redirect:
f5d33f52 1320 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1321 /* extract hostname and port */
f3bfe388 1322 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1323 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1324 if (*auth) {
aa8bf2fb 1325 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1326 }
53620bba
RB
1327 if (port < 0)
1328 port = RTSP_DEFAULT_PORT;
1329
1330 /* search for options */
602eb779 1331 option_list = strrchr(path, '?');
53620bba 1332 if (option_list) {
2a21adf9
MS
1333 /* Strip out the RTSP specific options, write out the rest of
1334 * the options back into the same string. */
1335 filename = option_list;
c8965800 1336 while (option_list) {
53620bba 1337 /* move the option pointer */
921da217 1338 option = ++option_list;
53620bba
RB
1339 option_list = strchr(option_list, '&');
1340 if (option_list)
921da217
LB
1341 *option_list = 0;
1342
53620bba 1343 /* handle the options */
c8965800 1344 if (!strcmp(option, "udp")) {
7a033e08 1345 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1346 } else if (!strcmp(option, "multicast")) {
7a033e08 1347 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1348 } else if (!strcmp(option, "tcp")) {
7a033e08 1349 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1350 } else if(!strcmp(option, "http")) {
1351 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1352 rt->control_transport = RTSP_MODE_TUNNEL;
a92c30d7
MS
1353 } else if (!strcmp(option, "filter_src")) {
1354 rt->filter_source = 1;
c8965800 1355 } else {
2a21adf9
MS
1356 /* Write options back into the buffer, using memmove instead
1357 * of strcpy since the strings may overlap. */
1358 int len = strlen(option);
1359 memmove(++filename, option, len);
1360 filename += len;
921da217
LB
1361 if (option_list) *filename = '&';
1362 }
53620bba 1363 }
921da217 1364 *filename = 0;
53620bba
RB
1365 }
1366
90abbdba 1367 if (!lower_transport_mask)
2a1d51c5 1368 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1369
3e24c770 1370 if (s->oformat) {
b7dc88fc
MS
1371 /* Only UDP or TCP - UDP multicast isn't supported. */
1372 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1373 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1374 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1375 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1376 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1377 err = AVERROR(EINVAL);
1378 goto fail;
1379 }
1380 }
1381
4bc5cc23
MS
1382 /* Construct the URI used in request; this is similar to s->filename,
1383 * but with authentication credentials removed and RTSP specific options
1384 * stripped out. */
1385 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1386 host, port, "%s", path);
1387
f5d33f52
JA
1388 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1389 /* set up initial handshake for tunneling */
1390 char httpname[1024];
1391 char sessioncookie[17];
1392 char headers[1024];
1393
10ed37b5 1394 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1395 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1396 av_get_random_seed(), av_get_random_seed());
1397
1398 /* GET requests */
5652bb94 1399 if (ffurl_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1400 err = AVERROR(EIO);
1401 goto fail;
1402 }
1403
1404 /* generate GET headers */
1405 snprintf(headers, sizeof(headers),
1406 "x-sessioncookie: %s\r\n"
1407 "Accept: application/x-rtsp-tunnelled\r\n"
1408 "Pragma: no-cache\r\n"
1409 "Cache-Control: no-cache\r\n",
1410 sessioncookie);
00e4a1f4 1411 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1412
1413 /* complete the connection */
62eaaeac 1414 if (ffurl_connect(rt->rtsp_hd)) {
f5d33f52
JA
1415 err = AVERROR(EIO);
1416 goto fail;
1417 }
1418
1419 /* POST requests */
5652bb94 1420 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1421 err = AVERROR(EIO);
1422 goto fail;
1423 }
1424
1425 /* generate POST headers */
1426 snprintf(headers, sizeof(headers),
1427 "x-sessioncookie: %s\r\n"
1428 "Content-Type: application/x-rtsp-tunnelled\r\n"
1429 "Pragma: no-cache\r\n"
1430 "Cache-Control: no-cache\r\n"
1431 "Content-Length: 32767\r\n"
1432 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1433 sessioncookie);
00e4a1f4
JA
1434 ff_http_set_headers(rt->rtsp_hd_out, headers);
1435 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1436
a8ead332
MS
1437 /* Initialize the authentication state for the POST session. The HTTP
1438 * protocol implementation doesn't properly handle multi-pass
1439 * authentication for POST requests, since it would require one of
1440 * the following:
1441 * - implementing Expect: 100-continue, which many HTTP servers
1442 * don't support anyway, even less the RTSP servers that do HTTP
1443 * tunneling
1444 * - sending the whole POST data until getting a 401 reply specifying
1445 * what authentication method to use, then resending all that data
1446 * - waiting for potential 401 replies directly after sending the
1447 * POST header (waiting for some unspecified time)
1448 * Therefore, we copy the full auth state, which works for both basic
1449 * and digest. (For digest, we would have to synchronize the nonce
1450 * count variable between the two sessions, if we'd do more requests
1451 * with the original session, though.)
1452 */
1453 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1454
9290f15d 1455 /* complete the connection */
62eaaeac 1456 if (ffurl_connect(rt->rtsp_hd_out)) {
9290f15d
MS
1457 err = AVERROR(EIO);
1458 goto fail;
1459 }
f5d33f52 1460 } else {
48e77473 1461 /* open the tcp connection */
41874d0a 1462 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
0589da0a 1463 if (ffurl_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1464 err = AVERROR(EIO);
1465 goto fail;
1466 }
00e4a1f4 1467 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1468 }
53620bba
RB
1469 rt->seq = 0;
1470
00e4a1f4 1471 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1472 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1473 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1474 NULL, 0, NI_NUMERICHOST);
1475 }
1476
c8965800
RB
1477 /* request options supported by the server; this also detects server
1478 * type */
1cf151e9 1479 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1480 cmd[0] = 0;
2e889ae4 1481 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1482 av_strlcat(cmd,
1483 /**
1484 * The following entries are required for proper
1485 * streaming from a Realmedia server. They are
1486 * interdependent in some way although we currently
1487 * don't quite understand how. Values were copied
1488 * from mplayer SVN r23589.
1489 * @param CompanyID is a 16-byte ID in base64
1490 * @param ClientChallenge is a 16-byte ID in hex
1491 */
1492 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1493 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1494 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1495 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1496 sizeof(cmd));
b17d11c6 1497 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1498 if (reply->status_code != RTSP_STATUS_OK) {
1499 err = AVERROR_INVALIDDATA;
1500 goto fail;
1501 }
1502
1503 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1504 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1505 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1506 continue;
7a86bafa
RB
1507 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1508 rt->server_type = RTSP_SERVER_WMS;
c8965800 1509 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1510 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1511 break;
1512 }
1513
44b70ce5 1514 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1515 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1516 else if (CONFIG_RTSP_MUXER)
c2688f3a 1517 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1518 if (err)
53620bba 1519 goto fail;
53620bba 1520
8a8754d8 1521 do {
c8965800
RB
1522 int lower_transport = ff_log2_tab[lower_transport_mask &
1523 ~(lower_transport_mask - 1)];
8a8754d8 1524
fef5649a 1525 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1526 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1527 real_challenge : NULL);
8a8754d8 1528 if (err < 0)
7e6ca34f 1529 goto fail;
90abbdba
RB
1530 lower_transport_mask &= ~(1 << lower_transport);
1531 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1532 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1533 goto fail;
1534 }
1535 } while (err);
53620bba 1536
2762a7a2
MS
1537 rt->lower_transport_mask = lower_transport_mask;
1538 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1539 rt->state = RTSP_STATE_IDLE;
c8965800 1540 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1541 return 0;
1542 fail:
3307e6ea 1543 ff_rtsp_close_streams(s);
b8c2c41d 1544 ff_rtsp_close_connections(s);
35cfd646 1545 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1546 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1547 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1548 reply->status_code,
1549 s->filename);
1550 goto redirect;
1551 }
57b5555c 1552 ff_network_close();
1617ad97
FB
1553 return err;
1554}
2e802e38 1555#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1556
44b70ce5 1557#if CONFIG_RTPDEC
0e59034e 1558static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1559 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1560{
1561 RTSPState *rt = s->priv_data;
1562 RTSPStream *rtsp_st;
a8475bbd
LB
1563 int n, i, ret, tcp_fd, timeout_cnt = 0;
1564 int max_p = 0;
1565 struct pollfd *p = rt->p;
0e59034e 1566
c8965800 1567 for (;;) {
0e59034e 1568 if (url_interrupt_cb())
c76374c6 1569 return AVERROR_EXIT;
321259c1
MS
1570 if (wait_end && wait_end - av_gettime() < 0)
1571 return AVERROR(EAGAIN);
a8475bbd 1572 max_p = 0;
0e59034e 1573 if (rt->rtsp_hd) {
a8475bbd
LB
1574 tcp_fd = url_get_file_handle(rt->rtsp_hd);
1575 p[max_p].fd = tcp_fd;
1576 p[max_p++].events = POLLIN;
0e59034e 1577 } else {
0e59034e
RB
1578 tcp_fd = -1;
1579 }
c8965800 1580 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1581 rtsp_st = rt->rtsp_streams[i];
1582 if (rtsp_st->rtp_handle) {
a8475bbd
LB
1583 p[max_p].fd = url_get_file_handle(rtsp_st->rtp_handle);
1584 p[max_p++].events = POLLIN;
1585 p[max_p].fd = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
1586 p[max_p++].events = POLLIN;
0e59034e
RB
1587 }
1588 }
a8475bbd 1589 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1590 if (n > 0) {
a8475bbd 1591 int j = 1 - (tcp_fd == -1);
9cba6f5f 1592 timeout_cnt = 0;
c8965800 1593 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1594 rtsp_st = rt->rtsp_streams[i];
1595 if (rtsp_st->rtp_handle) {
a8475bbd 1596 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1597 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1598 if (ret > 0) {
1599 *prtsp_st = rtsp_st;
1600 return ret;
1601 }
1602 }
a8475bbd 1603 j+=2;
0e59034e
RB
1604 }
1605 }
5fe8021a 1606#if CONFIG_RTSP_DEMUXER
a8475bbd 1607 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1608 RTSPMessageHeader reply;
1609
3df54c6b 1610 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1611 if (ret < 0)
1612 return ret;
0e59034e 1613 /* XXX: parse message */
c02fd3d2 1614 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1615 return 0;
1616 }
5fe8021a 1617#endif
9cba6f5f 1618 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1619 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1620 } else if (n < 0 && errno != EINTR)
1621 return AVERROR(errno);
0e59034e
RB
1622 }
1623}
1624
0526c6f7 1625int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1626{
1627 RTSPState *rt = s->priv_data;
1628 int ret, len;
321259c1
MS
1629 RTSPStream *rtsp_st, *first_queue_st = NULL;
1630 int64_t wait_end = 0;
0e59034e 1631
b20359f5
JA
1632 if (rt->nb_byes == rt->nb_rtsp_streams)
1633 return AVERROR_EOF;
1634
0e59034e
RB
1635 /* get next frames from the same RTP packet */
1636 if (rt->cur_transport_priv) {
c8965800 1637 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1638 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1639 } else
0e59034e
RB
1640 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1641 if (ret == 0) {
1642 rt->cur_transport_priv = NULL;
1643 return 0;
1644 } else if (ret == 1) {
1645 return 0;
c8965800 1646 } else
0e59034e 1647 rt->cur_transport_priv = NULL;
0e59034e
RB
1648 }
1649
321259c1
MS
1650 if (rt->transport == RTSP_TRANSPORT_RTP) {
1651 int i;
1652 int64_t first_queue_time = 0;
1653 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1654 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1655 int64_t queue_time;
1656 if (!rtpctx)
1657 continue;
1658 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1659 if (queue_time && (queue_time - first_queue_time < 0 ||
1660 !first_queue_time)) {
1661 first_queue_time = queue_time;
1662 first_queue_st = rt->rtsp_streams[i];
1663 }
1664 }
1665 if (first_queue_time)
1666 wait_end = first_queue_time + s->max_delay;
1667 }
1668
0e59034e
RB
1669 /* read next RTP packet */
1670 redo:
96a7c975
MS
1671 if (!rt->recvbuf) {
1672 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1673 if (!rt->recvbuf)
1674 return AVERROR(ENOMEM);
1675 }
1676
0e59034e
RB
1677 switch(rt->lower_transport) {
1678 default:
5fe8021a 1679#if CONFIG_RTSP_DEMUXER
0e59034e 1680 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1681 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1682 break;
5fe8021a 1683#endif
0e59034e
RB
1684 case RTSP_LOWER_TRANSPORT_UDP:
1685 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1686 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1687 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
0e59034e
RB
1688 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1689 break;
1690 }
321259c1
MS
1691 if (len == AVERROR(EAGAIN) && first_queue_st &&
1692 rt->transport == RTSP_TRANSPORT_RTP) {
1693 rtsp_st = first_queue_st;
1694 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
1695 goto end;
1696 }
0e59034e
RB
1697 if (len < 0)
1698 return len;
1699 if (len == 0)
1700 return AVERROR_EOF;
c8965800 1701 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1702 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1703 } else {
ad4ad27f 1704 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1705 if (ret < 0) {
1706 /* Either bad packet, or a RTCP packet. Check if the
1707 * first_rtcp_ntp_time field was initialized. */
1708 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1709 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1710 /* first_rtcp_ntp_time has been initialized for this stream,
1711 * copy the same value to all other uninitialized streams,
1712 * in order to map their timestamp origin to the same ntp time
1713 * as this one. */
1714 int i;
3a1cdcc7
MS
1715 AVStream *st = NULL;
1716 if (rtsp_st->stream_index >= 0)
1717 st = s->streams[rtsp_st->stream_index];
2cab6b48 1718 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1719 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1720 AVStream *st2 = NULL;
1721 if (rt->rtsp_streams[i]->stream_index >= 0)
1722 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1723 if (rtpctx2 && st && st2 &&
1724 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1725 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1726 rtpctx2->rtcp_ts_offset = av_rescale_q(
1727 rtpctx->rtcp_ts_offset, st->time_base,
1728 st2->time_base);
1729 }
2cab6b48
MS
1730 }
1731 }
b20359f5
JA
1732 if (ret == -RTCP_BYE) {
1733 rt->nb_byes++;
1734
1735 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1736 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1737
1738 if (rt->nb_byes == rt->nb_rtsp_streams)
1739 return AVERROR_EOF;
1740 }
2cab6b48
MS
1741 }
1742 }
321259c1 1743end:
0e59034e
RB
1744 if (ret < 0)
1745 goto redo;
c8965800 1746 if (ret == 1)
0e59034e
RB
1747 /* more packets may follow, so we save the RTP context */
1748 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1749
1750 return ret;
1751}
44b70ce5 1752#endif /* CONFIG_RTPDEC */
0e59034e 1753
44b70ce5 1754#if CONFIG_SDP_DEMUXER
cb1fdc61 1755static int sdp_probe(AVProbeData *p1)
93ced3e8 1756{
0e1ceacd 1757 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1758
3fbd12d1 1759 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1760 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1761 if (p + sizeof("c=IN IP") - 1 < p_end &&
1762 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1763 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1764
c8965800 1765 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1766 if (++p >= p_end)
cb1fdc61 1767 break;
cb1fdc61
FB
1768 if (*p == '\r')
1769 p++;
1770 }
93ced3e8
FB
1771 return 0;
1772}
1773
c8965800 1774static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 1775{
8b1ab7bf 1776 RTSPState *rt = s->priv_data;
93ced3e8
FB
1777 RTSPStream *rtsp_st;
1778 int size, i, err;
1779 char *content;
1780 char url[1024];
1781
57b5555c
MS
1782 if (!ff_network_init())
1783 return AVERROR(EIO);
1784
93ced3e8
FB
1785 /* read the whole sdp file */
1786 /* XXX: better loading */
1787 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1788 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1789 if (size <= 0) {
1790 av_free(content);
1791 return AVERROR_INVALIDDATA;
1792 }
1793 content[size] ='\0';
1794
f81c7ac7 1795 err = ff_sdp_parse(s, content);
93ced3e8 1796 av_free(content);
f81c7ac7 1797 if (err) goto fail;
93ced3e8
FB
1798
1799 /* open each RTP stream */
c8965800 1800 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1801 char namebuf[50];
8b1ab7bf 1802 rtsp_st = rt->rtsp_streams[i];
115329f1 1803
3fbd12d1
MS
1804 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1805 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1806 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1807 namebuf, rtsp_st->sdp_port,
57b5555c
MS
1808 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
1809 rtsp_st->sdp_ttl);
0589da0a 1810 if (ffurl_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
1811 err = AVERROR_INVALIDDATA;
1812 goto fail;
1813 }
ee0cb67f 1814 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1815 goto fail;
93ced3e8
FB
1816 }
1817 return 0;
c8965800 1818fail:
3307e6ea 1819 ff_rtsp_close_streams(s);
57b5555c 1820 ff_network_close();
93ced3e8
FB
1821 return err;
1822}
1823
93ced3e8
FB
1824static int sdp_read_close(AVFormatContext *s)
1825{
3307e6ea 1826 ff_rtsp_close_streams(s);
57b5555c 1827 ff_network_close();
93ced3e8
FB
1828 return 0;
1829}
1830
c6610a21 1831AVInputFormat ff_sdp_demuxer = {
93ced3e8 1832 "sdp",
bde15e74 1833 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
1834 sizeof(RTSPState),
1835 sdp_probe,
1836 sdp_read_header,
0526c6f7 1837 ff_rtsp_fetch_packet,
93ced3e8
FB
1838 sdp_read_close,
1839};
44b70ce5 1840#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1841
44b70ce5 1842#if CONFIG_RTP_DEMUXER
44594cc7
MS
1843static int rtp_probe(AVProbeData *p)
1844{
1845 if (av_strstart(p->filename, "rtp:", NULL))
1846 return AVPROBE_SCORE_MAX;
1847 return 0;
1848}
1849
1850static int rtp_read_header(AVFormatContext *s,
1851 AVFormatParameters *ap)
1852{
1853 uint8_t recvbuf[1500];
1854 char host[500], sdp[500];
1855 int ret, port;
1856 URLContext* in = NULL;
1857 int payload_type;
1858 AVCodecContext codec;
1859 struct sockaddr_storage addr;
ae628ec1 1860 AVIOContext pb;
44594cc7
MS
1861 socklen_t addrlen = sizeof(addr);
1862
1863 if (!ff_network_init())
1864 return AVERROR(EIO);
1865
0589da0a 1866 ret = ffurl_open(&in, s->filename, URL_RDONLY);
44594cc7
MS
1867 if (ret)
1868 goto fail;
1869
1870 while (1) {
bc371aca 1871 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1872 if (ret == AVERROR(EAGAIN))
1873 continue;
1874 if (ret < 0)
1875 goto fail;
1876 if (ret < 12) {
1877 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1878 continue;
1879 }
1880
1881 if ((recvbuf[0] & 0xc0) != 0x80) {
1882 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1883 "received\n");
1884 continue;
1885 }
1886
1887 payload_type = recvbuf[1] & 0x7f;
1888 break;
1889 }
1890 getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 1891 ffurl_close(in);
44594cc7
MS
1892 in = NULL;
1893
1894 memset(&codec, 0, sizeof(codec));
1895 if (ff_rtp_get_codec_info(&codec, payload_type)) {
1896 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
1897 "without an SDP file describing it\n",
1898 payload_type);
1899 goto fail;
1900 }
1901 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
1902 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
1903 "properly you need an SDP file "
1904 "describing it\n");
1905 }
1906
1907 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
1908 NULL, 0, s->filename);
1909
1910 snprintf(sdp, sizeof(sdp),
1911 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
1912 addr.ss_family == AF_INET ? 4 : 6, host,
1913 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
1914 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
1915 port, payload_type);
1916 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
1917
e731b8d8 1918 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
1919 s->pb = &pb;
1920
1921 /* sdp_read_header initializes this again */
1922 ff_network_close();
1923
1924 ret = sdp_read_header(s, ap);
1925 s->pb = NULL;
1926 return ret;
1927
1928fail:
1929 if (in)
e52a9145 1930 ffurl_close(in);
44594cc7
MS
1931 ff_network_close();
1932 return ret;
1933}
1934
c6610a21 1935AVInputFormat ff_rtp_demuxer = {
44594cc7
MS
1936 "rtp",
1937 NULL_IF_CONFIG_SMALL("RTP input format"),
1938 sizeof(RTSPState),
1939 rtp_probe,
1940 rtp_read_header,
0526c6f7 1941 ff_rtsp_fetch_packet,
44594cc7
MS
1942 sdp_read_close,
1943 .flags = AVFMT_NOFILE,
1944};
44b70ce5 1945#endif /* CONFIG_RTP_DEMUXER */
44594cc7 1946