Fix side channels when XCh extension is present.
[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>
b250f9c6 29#if HAVE_SYS_SELECT_H
933bd8e2 30#include <sys/select.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"
f65919af 41#include "rtpdec_asf.h"
4934884a 42
1617ad97 43//#define DEBUG
b6892136 44//#define DEBUG_RTP_TCP
1617ad97 45
c482500f 46#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 47int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 48#endif
85fb7b34 49
c2bfd816 50/* Timeout values for socket select, in ms,
9cba6f5f
SG
51 * and read_packet(), in seconds */
52#define SELECT_TIMEOUT_MS 100
53#define READ_PACKET_TIMEOUT_S 10
54#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
55
1ef36a70
RB
56static void get_word_until_chars(char *buf, int buf_size,
57 const char *sep, const char **pp)
1617ad97
FB
58{
59 const char *p;
60 char *q;
61
62 p = *pp;
30619e6e 63 p += strspn(p, SPACE_CHARS);
1617ad97
FB
64 q = buf;
65 while (!strchr(sep, *p) && *p != '\0') {
66 if ((q - buf) < buf_size - 1)
67 *q++ = *p;
68 p++;
69 }
70 if (buf_size > 0)
71 *q = '\0';
72 *pp = p;
73}
74
1ef36a70
RB
75static void get_word_sep(char *buf, int buf_size, const char *sep,
76 const char **pp)
1617ad97 77{
1ef36a70
RB
78 if (**pp == '/') (*pp)++;
79 get_word_until_chars(buf, buf_size, sep, pp);
80}
1617ad97 81
1ef36a70
RB
82static void get_word(char *buf, int buf_size, const char **pp)
83{
84 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
85}
86
c8965800 87/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
88static int sdp_parse_rtpmap(AVFormatContext *s,
89 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 90 int payload_type, const char *p)
93ced3e8
FB
91{
92 char buf[256];
d1ccf0e0
RD
93 int i;
94 AVCodec *c;
7b49ce2e 95 const char *c_name;
93ced3e8 96
d1ccf0e0 97 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
98 * see if we can handle this kind of payload.
99 * The space should normally not be there but some Real streams or
100 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
101 * have a trailing space. */
102 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 103 if (payload_type >= RTP_PT_PRIVATE) {
c8965800
RB
104 RTPDynamicProtocolHandler *handler;
105 for (handler = RTPFirstDynamicPayloadHandler;
106 handler; handler = handler->next) {
107 if (!strcasecmp(buf, handler->enc_name) &&
108 codec->codec_type == handler->codec_type) {
109 codec->codec_id = handler->codec_id;
110 rtsp_st->dynamic_handler = handler;
111 if (handler->open)
112 rtsp_st->dynamic_protocol_context = handler->open();
d1ccf0e0
RD
113 break;
114 }
4934884a 115 }
93ced3e8 116 } else {
c8965800
RB
117 /* We are in a standard case
118 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 119 /* search into AVRtpPayloadTypes[] */
7ed19d7f 120 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
121 }
122
123 c = avcodec_find_decoder(codec->codec_id);
124 if (c && c->name)
7b49ce2e 125 c_name = c->name;
d1ccf0e0 126 else
170870b7 127 c_name = "(null)";
d1ccf0e0 128
7515ed0c
RB
129 get_word_sep(buf, sizeof(buf), "/", &p);
130 i = atoi(buf);
131 switch (codec->codec_type) {
72415b2a 132 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
133 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
134 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
135 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
136 if (i > 0) {
137 codec->sample_rate = i;
138 get_word_sep(buf, sizeof(buf), "/", &p);
139 i = atoi(buf);
140 if (i > 0)
141 codec->channels = i;
142 // TODO: there is a bug here; if it is a mono stream, and
143 // less than 22000Hz, faad upconverts to stereo and twice
144 // the frequency. No problem, but the sample rate is being
145 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 146 }
7515ed0c
RB
147 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
148 codec->sample_rate);
149 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
150 codec->channels);
151 break;
72415b2a 152 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
153 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
154 break;
155 default:
156 break;
157 }
158 return 0;
93ced3e8
FB
159}
160
c2bfd816 161/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
162 * is broken out as a function because it is used in rtp_h264.c, which is
163 * forthcoming. */
3307e6ea 164int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 165 char *value, int value_size)
d0deedcb 166{
30619e6e 167 *p += strspn(*p, SPACE_CHARS);
c8965800 168 if (**p) {
d0deedcb
RM
169 get_word_sep(attr, attr_size, "=", p);
170 if (**p == '=')
171 (*p)++;
172 get_word_sep(value, value_size, ";", p);
173 if (**p == ';')
174 (*p)++;
175 return 1;
176 }
177 return 0;
178}
179
debe86bf 180/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
181 * and end time.
182 * Used for seeking in the rtp stream.
183 */
184static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
185{
186 char buf[256];
187
30619e6e 188 p += strspn(p, SPACE_CHARS);
f7d78f36 189 if (!av_stristart(p, "npt=", &p))
31693e00
RM
190 return;
191
192 *start = AV_NOPTS_VALUE;
193 *end = AV_NOPTS_VALUE;
194
195 get_word_sep(buf, sizeof(buf), "-", &p);
196 *start = parse_date(buf, 1);
197 if (*p == '-') {
198 p++;
199 get_word_sep(buf, sizeof(buf), "-", &p);
200 *end = parse_date(buf, 1);
201 }
202// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
203// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
204}
205
93ced3e8
FB
206typedef struct SDPParseState {
207 /* SDP only */
208 struct in_addr default_ip;
c8965800
RB
209 int default_ttl;
210 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
211} SDPParseState;
212
213static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
214 int letter, const char *buf)
215{
8b1ab7bf 216 RTSPState *rt = s->priv_data;
1617ad97
FB
217 char buf1[64], st_type[64];
218 const char *p;
72415b2a 219 enum AVMediaType codec_type;
fb65d2ca 220 int payload_type, i;
1617ad97
FB
221 AVStream *st;
222 RTSPStream *rtsp_st;
93ced3e8
FB
223 struct in_addr sdp_ip;
224 int ttl;
225
67c9cd69 226 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
227
228 p = buf;
cb760a47
RB
229 if (s1->skip_media && letter != 'm')
230 return;
c8965800 231 switch (letter) {
93ced3e8
FB
232 case 'c':
233 get_word(buf1, sizeof(buf1), &p);
234 if (strcmp(buf1, "IN") != 0)
235 return;
236 get_word(buf1, sizeof(buf1), &p);
237 if (strcmp(buf1, "IP4") != 0)
238 return;
239 get_word_sep(buf1, sizeof(buf1), "/", &p);
ac11d562 240 if (ff_inet_aton(buf1, &sdp_ip) == 0)
93ced3e8
FB
241 return;
242 ttl = 16;
243 if (*p == '/') {
244 p++;
245 get_word_sep(buf1, sizeof(buf1), "/", &p);
246 ttl = atoi(buf1);
247 }
248 if (s->nb_streams == 0) {
249 s1->default_ip = sdp_ip;
250 s1->default_ttl = ttl;
251 } else {
252 st = s->streams[s->nb_streams - 1];
253 rtsp_st = st->priv_data;
254 rtsp_st->sdp_ip = sdp_ip;
255 rtsp_st->sdp_ttl = ttl;
256 }
257 break;
1617ad97 258 case 's':
2ef6c124 259 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
260 break;
261 case 'i':
262 if (s->nb_streams == 0) {
2ef6c124 263 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
264 break;
265 }
266 break;
267 case 'm':
268 /* new stream */
cb760a47 269 s1->skip_media = 0;
1617ad97
FB
270 get_word(st_type, sizeof(st_type), &p);
271 if (!strcmp(st_type, "audio")) {
72415b2a 272 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 273 } else if (!strcmp(st_type, "video")) {
72415b2a 274 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 275 } else if (!strcmp(st_type, "application")) {
72415b2a 276 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 277 } else {
cb760a47 278 s1->skip_media = 1;
1617ad97
FB
279 return;
280 }
1617ad97
FB
281 rtsp_st = av_mallocz(sizeof(RTSPStream));
282 if (!rtsp_st)
283 return;
8b1ab7bf
FB
284 rtsp_st->stream_index = -1;
285 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
286
287 rtsp_st->sdp_ip = s1->default_ip;
288 rtsp_st->sdp_ttl = s1->default_ttl;
289
93ced3e8
FB
290 get_word(buf1, sizeof(buf1), &p); /* port */
291 rtsp_st->sdp_port = atoi(buf1);
292
293 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 294
93ced3e8
FB
295 /* XXX: handle list of formats */
296 get_word(buf1, sizeof(buf1), &p); /* format list */
297 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 298
7ed19d7f 299 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
300 /* no corresponding stream */
301 } else {
302 st = av_new_stream(s, 0);
303 if (!st)
304 return;
305 st->priv_data = rtsp_st;
306 rtsp_st->stream_index = st->index;
01f4895c 307 st->codec->codec_type = codec_type;
d1ccf0e0 308 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 309 /* if standard payload type, we can find the codec right now */
bf6d9818 310 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
311 }
312 }
1617ad97 313 /* put a default control url */
00eb13e0 314 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 315 sizeof(rtsp_st->control_url));
1617ad97
FB
316 break;
317 case 'a':
00eb13e0
AS
318 if (av_strstart(p, "control:", &p)) {
319 if (s->nb_streams == 0) {
320 if (!strncmp(p, "rtsp://", 7))
321 av_strlcpy(rt->control_uri, p,
322 sizeof(rt->control_uri));
323 } else {
1617ad97
FB
324 char proto[32];
325 /* get the control url */
326 st = s->streams[s->nb_streams - 1];
327 rtsp_st = st->priv_data;
115329f1 328
1617ad97 329 /* XXX: may need to add full url resolution */
f3bfe388 330 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 331 NULL, NULL, 0, p);
1617ad97
FB
332 if (proto[0] == '\0') {
333 /* relative control URL */
00eb13e0 334 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
335 av_strlcat(rtsp_st->control_url, "/",
336 sizeof(rtsp_st->control_url));
337 av_strlcat(rtsp_st->control_url, p,
338 sizeof(rtsp_st->control_url));
339 } else
340 av_strlcpy(rtsp_st->control_url, p,
341 sizeof(rtsp_st->control_url));
00eb13e0 342 }
83d14c85 343 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 344 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 345 get_word(buf1, sizeof(buf1), &p);
93ced3e8 346 payload_type = atoi(buf1);
83d14c85 347 st = s->streams[s->nb_streams - 1];
ff16f551 348 rtsp_st = st->priv_data;
8f3c87f3 349 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
7fc8ac7f
JA
350 } else if (av_strstart(p, "fmtp:", &p) ||
351 av_strstart(p, "framesize:", &p)) {
93ced3e8 352 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
353 // let dynamic protocol handlers have a stab at the line.
354 get_word(buf1, sizeof(buf1), &p);
355 payload_type = atoi(buf1);
c8965800
RB
356 for (i = 0; i < s->nb_streams; i++) {
357 st = s->streams[i];
d0deedcb 358 rtsp_st = st->priv_data;
c8965800
RB
359 if (rtsp_st->sdp_payload_type == payload_type &&
360 rtsp_st->dynamic_handler &&
361 rtsp_st->dynamic_handler->parse_sdp_a_line)
362 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
363 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 364 }
c8965800 365 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
366 int64_t start, end;
367
368 // this is so that seeking on a streamed file can work.
369 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
370 s->start_time = start;
371 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
372 s->duration = (end == AV_NOPTS_VALUE) ?
373 AV_NOPTS_VALUE : end - start;
119b4668
RB
374 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
375 if (atoi(p) == 1)
376 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
377 } else {
378 if (rt->server_type == RTSP_SERVER_WMS)
379 ff_wms_parse_sdp_a_line(s, p);
380 if (s->nb_streams > 0) {
c4a3d032
RB
381 if (rt->server_type == RTSP_SERVER_REAL)
382 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
383
384 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
385 if (rtsp_st->dynamic_handler &&
386 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
387 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
388 s->nb_streams - 1,
c4a3d032 389 rtsp_st->dynamic_protocol_context, buf);
1a30d541 390 }
1617ad97
FB
391 }
392 break;
393 }
394}
395
5c91a675 396static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
397{
398 const char *p;
399 int letter;
9211bcdd
RB
400 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
401 * contain long SDP lines containing complete ASF Headers (several
402 * kB) or arrays of MDPR (RM stream descriptor) headers plus
403 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
404 * buffer is large.
405 *
afcea58c
JA
406 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
407 * in rtpdec_xiph.c. */
373afbaf 408 char buf[16384], *q;
93ced3e8 409 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 410
93ced3e8 411 memset(s1, 0, sizeof(SDPParseState));
1617ad97 412 p = content;
c8965800 413 for (;;) {
30619e6e 414 p += strspn(p, SPACE_CHARS);
1617ad97
FB
415 letter = *p;
416 if (letter == '\0')
417 break;
418 p++;
419 if (*p != '=')
420 goto next_line;
421 p++;
422 /* get the content */
423 q = buf;
b6892136 424 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
425 if ((q - buf) < sizeof(buf) - 1)
426 *q++ = *p;
427 p++;
428 }
429 *q = '\0';
93ced3e8 430 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
431 next_line:
432 while (*p != '\n' && *p != '\0')
433 p++;
434 if (*p == '\n')
435 p++;
436 }
437 return 0;
438}
439
1ced9da3 440/* close and free RTSP streams */
3307e6ea 441void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 442{
52aa4338 443 RTSPState *rt = s->priv_data;
1ced9da3
LA
444 int i;
445 RTSPStream *rtsp_st;
446
c8965800 447 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
448 rtsp_st = rt->rtsp_streams[i];
449 if (rtsp_st) {
450 if (rtsp_st->transport_priv) {
fd450a51
MS
451 if (s->oformat) {
452 AVFormatContext *rtpctx = rtsp_st->transport_priv;
453 av_write_trailer(rtpctx);
b7dc88fc
MS
454 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
455 uint8_t *ptr;
456 url_close_dyn_buf(rtpctx->pb, &ptr);
457 av_free(ptr);
458 } else {
685e76b5 459 url_fclose(rtpctx->pb);
b7dc88fc 460 }
f86f6656
MS
461 av_metadata_free(&rtpctx->streams[0]->metadata);
462 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
463 av_free(rtpctx->streams[0]);
464 av_free(rtpctx);
465 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
466 ff_rdt_parse_close(rtsp_st->transport_priv);
467 else
468 rtp_parse_close(rtsp_st->transport_priv);
469 }
470 if (rtsp_st->rtp_handle)
471 url_close(rtsp_st->rtp_handle);
472 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
473 rtsp_st->dynamic_handler->close(
474 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
475 }
476 }
477 av_free(rt->rtsp_streams);
478 if (rt->asf_ctx) {
479 av_close_input_stream (rt->asf_ctx);
480 rt->asf_ctx = NULL;
481 }
1ced9da3
LA
482}
483
5c7fd910
MS
484static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
485 URLContext *handle)
486{
c07c6f81 487 RTSPState *rt = s->priv_data;
fd450a51
MS
488 AVFormatContext *rtpctx;
489 int ret;
490 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
491
492 if (!rtp_format)
493 return NULL;
494
495 /* Allocate an AVFormatContext for each output stream */
496 rtpctx = avformat_alloc_context();
497 if (!rtpctx)
498 return NULL;
499
500 rtpctx->oformat = rtp_format;
501 if (!av_new_stream(rtpctx, 0)) {
502 av_free(rtpctx);
503 return NULL;
504 }
505 /* Copy the max delay setting; the rtp muxer reads this. */
506 rtpctx->max_delay = s->max_delay;
507 /* Copy other stream parameters. */
508 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
509
c07c6f81
MS
510 /* Set the synchronized start time. */
511 rtpctx->start_time_realtime = rt->start_time;
512
fd450a51
MS
513 /* Remove the local codec, link to the original codec
514 * context instead, to give the rtp muxer access to
515 * codec parameters. */
516 av_free(rtpctx->streams[0]->codec);
517 rtpctx->streams[0]->codec = st->codec;
518
b7dc88fc 519 if (handle) {
685e76b5 520 url_fdopen(&rtpctx->pb, handle);
b7dc88fc
MS
521 } else
522 url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
fd450a51
MS
523 ret = av_write_header(rtpctx);
524
525 if (ret) {
b7dc88fc 526 if (handle) {
685e76b5 527 url_fclose(rtpctx->pb);
b7dc88fc
MS
528 } else {
529 uint8_t *ptr;
530 url_close_dyn_buf(rtpctx->pb, &ptr);
531 av_free(ptr);
532 }
fd450a51
MS
533 av_free(rtpctx->streams[0]);
534 av_free(rtpctx);
535 return NULL;
536 }
537
538 /* Copy the RTP AVStream timebase back to the original AVStream */
539 st->time_base = rtpctx->streams[0]->time_base;
540 return rtpctx;
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
fd450a51
MS
554 if (s->oformat) {
555 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
c2bfd816 556 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51
MS
557 rtsp_st->rtp_handle = NULL;
558 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
559 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
560 rtsp_st->dynamic_protocol_context,
561 rtsp_st->dynamic_handler);
562 else
563 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
ca937a55 564 rtsp_st->sdp_payload_type);
1ced9da3
LA
565
566 if (!rtsp_st->transport_priv) {
567 return AVERROR(ENOMEM);
568 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 569 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
570 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
571 rtsp_st->dynamic_protocol_context,
572 rtsp_st->dynamic_handler);
573 }
574 }
575
576 return 0;
577}
578
6f5a3d0a 579#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
580static int rtsp_probe(AVProbeData *p)
581{
582 if (av_strstart(p->filename, "rtsp:", NULL))
583 return AVPROBE_SCORE_MAX;
584 return 0;
585}
586
1617ad97
FB
587static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
588{
589 const char *p;
590 int v;
591
592 p = *pp;
30619e6e 593 p += strspn(p, SPACE_CHARS);
1617ad97
FB
594 v = strtol(p, (char **)&p, 10);
595 if (*p == '-') {
596 p++;
597 *min_ptr = v;
598 v = strtol(p, (char **)&p, 10);
599 *max_ptr = v;
600 } else {
601 *min_ptr = v;
602 *max_ptr = v;
603 }
604 *pp = p;
605}
606
607/* XXX: only one transport specification is parsed */
a9e534d5 608static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
609{
610 char transport_protocol[16];
611 char profile[16];
612 char lower_transport[16];
613 char parameter[16];
614 RTSPTransportField *th;
615 char buf[256];
115329f1 616
1617ad97 617 reply->nb_transports = 0;
115329f1 618
c8965800 619 for (;;) {
30619e6e 620 p += strspn(p, SPACE_CHARS);
1617ad97
FB
621 if (*p == '\0')
622 break;
623
624 th = &reply->transports[reply->nb_transports];
625
115329f1 626 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 627 "/", &p);
e1502118 628 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
629 get_word_sep(profile, sizeof(profile), "/;,", &p);
630 lower_transport[0] = '\0';
631 /* rtp/avp/<protocol> */
632 if (*p == '/') {
7ecc634e
LB
633 get_word_sep(lower_transport, sizeof(lower_transport),
634 ";,", &p);
119b4668
RB
635 }
636 th->transport = RTSP_TRANSPORT_RTP;
637 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
638 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 639 /* x-pn-tng/<protocol> */
e1502118
LB
640 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
641 profile[0] = '\0';
119b4668 642 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 643 }
b6892136 644 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 645 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 646 else
90abbdba 647 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 648
1617ad97
FB
649 if (*p == ';')
650 p++;
651 /* get each parameter */
652 while (*p != '\0' && *p != ',') {
653 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
654 if (!strcmp(parameter, "port")) {
655 if (*p == '=') {
656 p++;
657 rtsp_parse_range(&th->port_min, &th->port_max, &p);
658 }
659 } else if (!strcmp(parameter, "client_port")) {
660 if (*p == '=') {
661 p++;
115329f1 662 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
663 &th->client_port_max, &p);
664 }
665 } else if (!strcmp(parameter, "server_port")) {
666 if (*p == '=') {
667 p++;
115329f1 668 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
669 &th->server_port_max, &p);
670 }
671 } else if (!strcmp(parameter, "interleaved")) {
672 if (*p == '=') {
673 p++;
115329f1 674 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
675 &th->interleaved_max, &p);
676 }
677 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
678 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
679 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
680 } else if (!strcmp(parameter, "ttl")) {
681 if (*p == '=') {
682 p++;
683 th->ttl = strtol(p, (char **)&p, 10);
684 }
685 } else if (!strcmp(parameter, "destination")) {
686 struct in_addr ipaddr;
687
688 if (*p == '=') {
689 p++;
690 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 691 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
692 th->destination = ntohl(ipaddr.s_addr);
693 }
694 }
695 while (*p != ';' && *p != '\0' && *p != ',')
696 p++;
697 if (*p == ';')
698 p++;
699 }
700 if (*p == ',')
701 p++;
702
703 reply->nb_transports++;
704 }
705}
706
2626308a
MS
707void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
708 HTTPAuthState *auth_state)
1617ad97
FB
709{
710 const char *p;
711
712 /* NOTE: we do case independent match for broken servers */
713 p = buf;
f7d78f36 714 if (av_stristart(p, "Session:", &p)) {
30e79845 715 int t;
1617ad97 716 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
717 if (av_stristart(p, ";timeout=", &p) &&
718 (t = strtol(p, NULL, 10)) > 0) {
719 reply->timeout = t;
720 }
f7d78f36 721 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 722 reply->content_length = strtol(p, NULL, 10);
f7d78f36 723 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 724 rtsp_parse_transport(reply, p);
f7d78f36 725 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 726 reply->seq = strtol(p, NULL, 10);
f7d78f36 727 } else if (av_stristart(p, "Range:", &p)) {
31693e00 728 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 729 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 730 p += strspn(p, SPACE_CHARS);
30aa6aed 731 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 732 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 733 p += strspn(p, SPACE_CHARS);
7a86bafa 734 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
735 } else if (av_stristart(p, "Notice:", &p) ||
736 av_stristart(p, "X-Notice:", &p)) {
737 reply->notice = strtol(p, NULL, 10);
d243ba30 738 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 739 p += strspn(p, SPACE_CHARS);
d243ba30 740 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a 741 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
30619e6e 742 p += strspn(p, SPACE_CHARS);
2626308a
MS
743 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
744 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
30619e6e 745 p += strspn(p, SPACE_CHARS);
2626308a 746 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
747 }
748}
749
b7b8fc34 750/* skip a RTP/TCP interleaved packet */
ec55edba 751void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
752{
753 RTSPState *rt = s->priv_data;
754 int ret, len, len1;
755 uint8_t buf[1024];
756
0e848977 757 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
758 if (ret != 3)
759 return;
80fb8234 760 len = AV_RB16(buf + 1);
67c9cd69
BC
761
762 dprintf(s, "skipping RTP packet len=%d\n", len);
763
b7b8fc34
FB
764 /* skip payload */
765 while (len > 0) {
766 len1 = len;
767 if (len1 > sizeof(buf))
768 len1 = sizeof(buf);
0e848977 769 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
770 if (ret != len1)
771 return;
772 len -= len1;
773 }
774}
1617ad97 775
3307e6ea 776int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
777 unsigned char **content_ptr,
778 int return_on_interleaved_data)
1617ad97
FB
779{
780 RTSPState *rt = s->priv_data;
781 char buf[4096], buf1[1024], *q;
782 unsigned char ch;
783 const char *p;
7e726132 784 int ret, content_length, line_count = 0;
1617ad97
FB
785 unsigned char *content = NULL;
786
d541a7d2 787 memset(reply, 0, sizeof(*reply));
1617ad97 788
1617ad97 789 /* parse reply (XXX: use buffers) */
1617ad97 790 rt->last_reply[0] = '\0';
c8965800 791 for (;;) {
1617ad97 792 q = buf;
c8965800 793 for (;;) {
0e848977 794 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 795#ifdef DEBUG_RTP_TCP
67c9cd69 796 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
797#endif
798 if (ret != 1)
799 return -1;
1617ad97
FB
800 if (ch == '\n')
801 break;
b7b8fc34
FB
802 if (ch == '$') {
803 /* XXX: only parse it if first char on line ? */
7e726132
RB
804 if (return_on_interleaved_data) {
805 return 1;
806 } else
ec55edba 807 ff_rtsp_skip_packet(s);
b7b8fc34 808 } else if (ch != '\r') {
1617ad97
FB
809 if ((q - buf) < sizeof(buf) - 1)
810 *q++ = ch;
811 }
812 }
813 *q = '\0';
67c9cd69
BC
814
815 dprintf(s, "line='%s'\n", buf);
816
1617ad97
FB
817 /* test if last line */
818 if (buf[0] == '\0')
819 break;
820 p = buf;
821 if (line_count == 0) {
822 /* get reply code */
823 get_word(buf1, sizeof(buf1), &p);
824 get_word(buf1, sizeof(buf1), &p);
825 reply->status_code = atoi(buf1);
826 } else {
2626308a 827 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
828 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
829 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
830 }
831 line_count++;
832 }
115329f1 833
1617ad97 834 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 835 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 836
1617ad97
FB
837 content_length = reply->content_length;
838 if (content_length > 0) {
839 /* leave some room for a trailing '\0' (useful for simple parsing) */
840 content = av_malloc(content_length + 1);
0e848977 841 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
842 content[content_length] = '\0';
843 }
844 if (content_ptr)
845 *content_ptr = content;
e2e2e7dd
AB
846 else
847 av_free(content);
7e726132 848
7ed8211b
LB
849 if (rt->seq != reply->seq) {
850 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
851 rt->seq, reply->seq);
852 }
853
fccb1770
RB
854 /* EOS */
855 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
856 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 857 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 858 rt->state = RTSP_STATE_IDLE;
c8965800 859 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 860 return AVERROR(EIO); /* data or server error */
c8965800 861 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
862 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
863 return AVERROR(EPERM);
864
7e726132 865 return 0;
1617ad97
FB
866}
867
d0382374 868int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
fc490fcf
MS
869 const char *method, const char *url,
870 const char *headers,
871 const unsigned char *send_content,
872 int send_content_length)
29b9f58b
RB
873{
874 RTSPState *rt = s->priv_data;
f5d33f52
JA
875 char buf[4096], *out_buf;
876 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 877
f5d33f52
JA
878 /* Add in RTSP headers */
879 out_buf = buf;
29b9f58b 880 rt->seq++;
b17d11c6
MS
881 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
882 if (headers)
883 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 884 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
885 if (rt->session_id[0] != '\0' && (!headers ||
886 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 887 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 888 }
aa8bf2fb
MS
889 if (rt->auth[0]) {
890 char *str = ff_http_auth_create_response(&rt->auth_state,
891 rt->auth, url, method);
892 if (str)
893 av_strlcat(buf, str, sizeof(buf));
894 av_free(str);
895 }
dfd017bf
MS
896 if (send_content_length > 0 && send_content)
897 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 898 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 899
f5d33f52
JA
900 /* base64 encode rtsp if tunneling */
901 if (rt->control_transport == RTSP_MODE_TUNNEL) {
902 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
903 out_buf = base64buf;
904 }
905
67c9cd69
BC
906 dprintf(s, "Sending:\n%s--\n", buf);
907
f5d33f52
JA
908 url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
909 if (send_content_length > 0 && send_content) {
910 if (rt->control_transport == RTSP_MODE_TUNNEL) {
911 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
912 "with content data not supported\n");
913 return AVERROR_PATCHWELCOME;
914 }
b8c2c41d 915 url_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 916 }
30e79845 917 rt->last_cmd_time = av_gettime();
d0382374
JA
918
919 return 0;
30e79845
RB
920}
921
d0382374 922int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 923 const char *url, const char *headers)
dfd017bf 924{
d0382374 925 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
926}
927
d0382374 928int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
929 const char *headers, RTSPMessageHeader *reply,
930 unsigned char **content_ptr)
30e79845 931{
d0382374 932 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 933 content_ptr, NULL, 0);
29b9f58b
RB
934}
935
d0382374 936int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
937 const char *method, const char *url,
938 const char *header,
939 RTSPMessageHeader *reply,
940 unsigned char **content_ptr,
941 const unsigned char *send_content,
942 int send_content_length)
dfd017bf 943{
30af0779
MS
944 RTSPState *rt = s->priv_data;
945 HTTPAuthType cur_auth_type;
d0382374 946 int ret;
30af0779
MS
947
948retry:
949 cur_auth_type = rt->auth_state.auth_type;
d0382374 950 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
951 send_content,
952 send_content_length)))
d0382374 953 return ret;
dfd017bf 954
d0382374
JA
955 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
956 return ret;
30af0779
MS
957
958 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
959 rt->auth_state.auth_type != HTTP_AUTH_NONE)
960 goto retry;
d0382374
JA
961
962 return 0;
dfd017bf
MS
963}
964
53620bba 965/**
32e543f8 966 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 967 */
c8965800
RB
968static int make_setup_request(AVFormatContext *s, const char *host, int port,
969 int lower_transport, const char *real_challenge)
1617ad97
FB
970{
971 RTSPState *rt = s->priv_data;
f830c9a4 972 int rtx, j, i, err, interleave = 0;
1617ad97 973 RTSPStream *rtsp_st;
a9e534d5 974 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 975 char cmd[2048];
e9dea59f
RB
976 const char *trans_pref;
977
119b4668 978 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
979 trans_pref = "x-pn-tng";
980 else
981 trans_pref = "RTP/AVP";
115329f1 982
30e79845
RB
983 /* default timeout: 1 minute */
984 rt->timeout = 60;
985
1617ad97
FB
986 /* for each stream, make the setup request */
987 /* XXX: we assume the same server is used for the control of each
c8965800 988 * RTSP stream */
d1ccf0e0 989
c8965800 990 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
991 char transport[2048];
992
f830c9a4
RB
993 /**
994 * WMS serves all UDP data over a single connection, the RTX, which
995 * isn't necessarily the first in the SDP but has to be the first
996 * to be set up, else the second/third SETUP will fail with a 461.
997 */
998 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
999 rt->server_type == RTSP_SERVER_WMS) {
1000 if (i == 0) {
1001 /* rtx first */
1002 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1003 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1004 if (len >= 4 &&
c8965800
RB
1005 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1006 "/rtx"))
f830c9a4
RB
1007 break;
1008 }
1009 if (rtx == rt->nb_rtsp_streams)
1010 return -1; /* no RTX found */
1011 rtsp_st = rt->rtsp_streams[rtx];
1012 } else
1013 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1014 } else
2fea9650 1015 rtsp_st = rt->rtsp_streams[i];
1617ad97 1016
1617ad97 1017 /* RTP/UDP */
90abbdba 1018 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1019 char buf[256];
85fb7b34 1020
f830c9a4
RB
1021 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1022 port = reply->transports[0].client_port_min;
1023 goto have_port;
1024 }
1025
85fb7b34 1026 /* first try in specified port range */
d1ccf0e0 1027 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1028 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1029 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1030 "?localport=%d", j);
c8965800
RB
1031 /* we will use two ports per rtp stream (rtp and rtcp) */
1032 j += 2;
1033 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1034 goto rtp_opened;
1035 }
1617ad97 1036 }
85fb7b34 1037
c8965800
RB
1038#if 0
1039 /* then try on any port */
1040 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1041 err = AVERROR_INVALIDDATA;
1042 goto fail;
1043 }
1044#endif
85fb7b34
FB
1045
1046 rtp_opened:
8b1ab7bf 1047 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1048 have_port:
0ad306bc 1049 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1050 "%s/UDP;", trans_pref);
1051 if (rt->server_type != RTSP_SERVER_REAL)
1052 av_strlcat(transport, "unicast;", sizeof(transport));
1053 av_strlcatf(transport, sizeof(transport),
1054 "client_port=%d", port);
f830c9a4
RB
1055 if (rt->transport == RTSP_TRANSPORT_RTP &&
1056 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1057 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1058 }
1059
1060 /* RTP/TCP */
90abbdba 1061 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1062 /** For WMS streams, the application streams are only used for
1063 * UDP. When trying to set it up for TCP streams, the server
1064 * will return an error. Therefore, we skip those streams. */
1065 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1066 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1067 AVMEDIA_TYPE_DATA)
090438cc 1068 continue;
0ad306bc 1069 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1070 "%s/TCP;", trans_pref);
1071 if (rt->server_type == RTSP_SERVER_WMS)
1072 av_strlcat(transport, "unicast;", sizeof(transport));
1073 av_strlcatf(transport, sizeof(transport),
1074 "interleaved=%d-%d",
1075 interleave, interleave + 1);
1076 interleave += 2;
1617ad97
FB
1077 }
1078
90abbdba 1079 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1080 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1081 "%s/UDP;multicast", trans_pref);
1617ad97 1082 }
69adcc4f
MS
1083 if (s->oformat) {
1084 av_strlcat(transport, ";mode=receive", sizeof(transport));
1085 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1086 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1087 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1088 snprintf(cmd, sizeof(cmd),
b6892136 1089 "Transport: %s\r\n",
b17d11c6 1090 transport);
2e889ae4 1091 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1092 char real_res[41], real_csum[9];
1093 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1094 real_challenge);
1095 av_strlcatf(cmd, sizeof(cmd),
1096 "If-Match: %s\r\n"
1097 "RealChallenge2: %s, sd=%s\r\n",
1098 rt->session_id, real_res, real_csum);
1099 }
b17d11c6 1100 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1101 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1102 err = 1;
1103 goto fail;
7e6ca34f
RB
1104 } else if (reply->status_code != RTSP_STATUS_OK ||
1105 reply->nb_transports != 1) {
1617ad97
FB
1106 err = AVERROR_INVALIDDATA;
1107 goto fail;
1108 }
1109
1110 /* XXX: same protocol for all streams is required */
1111 if (i > 0) {
119b4668
RB
1112 if (reply->transports[0].lower_transport != rt->lower_transport ||
1113 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1114 err = AVERROR_INVALIDDATA;
1115 goto fail;
1116 }
1117 } else {
90abbdba 1118 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1119 rt->transport = reply->transports[0].transport;
1617ad97
FB
1120 }
1121
1122 /* close RTP connection if not choosen */
90abbdba
RB
1123 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1124 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1125 url_close(rtsp_st->rtp_handle);
1126 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1127 }
1128
90abbdba
RB
1129 switch(reply->transports[0].lower_transport) {
1130 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1131 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1132 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1133 break;
115329f1 1134
c8965800
RB
1135 case RTSP_LOWER_TRANSPORT_UDP: {
1136 char url[1024];
1137
1138 /* XXX: also use address if specified */
57b5555c
MS
1139 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1140 reply->transports[0].server_port_min, NULL);
c8965800
RB
1141 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1142 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1143 err = AVERROR_INVALIDDATA;
1144 goto fail;
1617ad97 1145 }
9c8fa20d
MS
1146 /* Try to initialize the connection state in a
1147 * potential NAT router by sending dummy packets.
1148 * RTP/RTCP dummy packets are used for RDT, too.
1149 */
30ff7c5c 1150 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1151 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1152 break;
c8965800
RB
1153 }
1154 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1155 char url[1024];
1156 struct in_addr in;
1157 int port, ttl;
1158
1159 if (reply->transports[0].destination) {
1160 in.s_addr = htonl(reply->transports[0].destination);
1161 port = reply->transports[0].port_min;
1162 ttl = reply->transports[0].ttl;
1163 } else {
1164 in = rtsp_st->sdp_ip;
1165 port = rtsp_st->sdp_port;
1166 ttl = rtsp_st->sdp_ttl;
1167 }
57b5555c
MS
1168 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1169 port, "?ttl=%d", ttl);
c8965800
RB
1170 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1171 err = AVERROR_INVALIDDATA;
1172 goto fail;
1617ad97
FB
1173 }
1174 break;
1175 }
c8965800 1176 }
d1ccf0e0 1177
ee0cb67f 1178 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1179 goto fail;
1617ad97
FB
1180 }
1181
30e79845
RB
1182 if (reply->timeout > 0)
1183 rt->timeout = reply->timeout;
1184
2e889ae4 1185 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1186 rt->need_subscription = 1;
1187
53620bba
RB
1188 return 0;
1189
1190fail:
c8965800 1191 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1192 if (rt->rtsp_streams[i]->rtp_handle) {
1193 url_close(rt->rtsp_streams[i]->rtp_handle);
1194 rt->rtsp_streams[i]->rtp_handle = NULL;
1195 }
1196 }
53620bba
RB
1197 return err;
1198}
1199
1ced9da3
LA
1200static int rtsp_read_play(AVFormatContext *s)
1201{
1202 RTSPState *rt = s->priv_data;
1203 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1204 int i;
1ced9da3
LA
1205 char cmd[1024];
1206
1207 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1208
1209 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1210 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1211 cmd[0] = 0;
1ced9da3
LA
1212 } else {
1213 snprintf(cmd, sizeof(cmd),
1ced9da3 1214 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1215 (double)rt->seek_timestamp / AV_TIME_BASE);
1216 }
b17d11c6 1217 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1218 if (reply->status_code != RTSP_STATUS_OK) {
1219 return -1;
1220 }
5948f822
MS
1221 if (reply->range_start != AV_NOPTS_VALUE &&
1222 rt->transport == RTSP_TRANSPORT_RTP) {
1223 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1224 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1225 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1226 AVStream *st = NULL;
8d168a92
MS
1227 if (!rtpctx)
1228 continue;
5948f822
MS
1229 if (rtsp_st->stream_index >= 0)
1230 st = s->streams[rtsp_st->stream_index];
1231 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1232 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1233 if (st)
1234 rtpctx->range_start_offset = av_rescale_q(reply->range_start,
1235 AV_TIME_BASE_Q,
1236 st->time_base);
1237 }
1238 }
1ced9da3 1239 }
c02fd3d2 1240 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1241 return 0;
1242}
1243
6e69f6c4 1244static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1245{
1246 RTSPState *rt = s->priv_data;
e23d195d
MS
1247 char cmd[1024];
1248 unsigned char *content = NULL;
1249 int ret;
1250
1251 /* describe the stream */
1252 snprintf(cmd, sizeof(cmd),
b17d11c6 1253 "Accept: application/sdp\r\n");
e23d195d
MS
1254 if (rt->server_type == RTSP_SERVER_REAL) {
1255 /**
1256 * The Require: attribute is needed for proper streaming from
1257 * Realmedia servers.
1258 */
1259 av_strlcat(cmd,
1260 "Require: com.real.retain-entity-for-setup\r\n",
1261 sizeof(cmd));
1262 }
b17d11c6 1263 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1264 if (!content)
1265 return AVERROR_INVALIDDATA;
1266 if (reply->status_code != RTSP_STATUS_OK) {
1267 av_freep(&content);
1268 return AVERROR_INVALIDDATA;
1269 }
1270
1271 /* now we got the SDP description, we parse it */
1272 ret = sdp_parse(s, (const char *)content);
1273 av_freep(&content);
1274 if (ret < 0)
1275 return AVERROR_INVALIDDATA;
1276
1277 return 0;
1278}
1279
26cb700c 1280static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1281{
1282 RTSPState *rt = s->priv_data;
1283 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1284 int i;
1285 char *sdp;
26cb700c 1286 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1287
1288 rt->start_time = av_gettime();
3e24c770
MS
1289
1290 /* Announce the stream */
3e24c770
MS
1291 sdp = av_mallocz(8192);
1292 if (sdp == NULL)
1293 return AVERROR(ENOMEM);
26cb700c
MS
1294 /* We create the SDP based on the RTSP AVFormatContext where we
1295 * aren't allowed to change the filename field. (We create the SDP
1296 * based on the RTSP context since the contexts for the RTP streams
1297 * don't exist yet.) In order to specify a custom URL with the actual
1298 * peer IP instead of the originally specified hostname, we create
1299 * a temporary copy of the AVFormatContext, where the custom URL is set.
1300 *
1301 * FIXME: Create the SDP without copying the AVFormatContext.
1302 * This either requires setting up the RTP stream AVFormatContexts
1303 * already here (complicating things immensely) or getting a more
1304 * flexible SDP creation interface.
1305 */
1306 sdp_ctx = *s;
1307 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1308 "rtsp", NULL, addr, -1, NULL);
1309 ctx_array[0] = &sdp_ctx;
1310 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1311 av_free(sdp);
1312 return AVERROR_INVALIDDATA;
1313 }
1314 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
b17d11c6
MS
1315 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1316 "Content-Type: application/sdp\r\n",
1317 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1318 av_free(sdp);
1319 if (reply->status_code != RTSP_STATUS_OK)
1320 return AVERROR_INVALIDDATA;
1321
1322 /* Set up the RTSPStreams for each AVStream */
1323 for (i = 0; i < s->nb_streams; i++) {
1324 RTSPStream *rtsp_st;
1325 AVStream *st = s->streams[i];
1326
1327 rtsp_st = av_mallocz(sizeof(RTSPStream));
1328 if (!rtsp_st)
1329 return AVERROR(ENOMEM);
1330 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1331
1332 st->priv_data = rtsp_st;
1333 rtsp_st->stream_index = i;
1334
db76ca7f 1335 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1336 /* Note, this must match the relative uri set in the sdp content */
1337 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1338 "/streamid=%d", i);
1339 }
1340
1341 return 0;
1342}
1343
b8c2c41d
JA
1344void ff_rtsp_close_connections(AVFormatContext *s)
1345{
1346 RTSPState *rt = s->priv_data;
1347 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1348 url_close(rt->rtsp_hd);
6217b645 1349 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1350}
1351
3307e6ea 1352int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1353{
1354 RTSPState *rt = s->priv_data;
921da217
LB
1355 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1356 char *option_list, *option, *filename;
03f8fc08 1357 int port, err, tcp_fd;
3370289a 1358 RTSPMessageHeader reply1 = {}, *reply = &reply1;
90abbdba 1359 int lower_transport_mask = 0;
1cf151e9 1360 char real_challenge[64];
03f8fc08
MS
1361 struct sockaddr_storage peer;
1362 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1363
1364 if (!ff_network_init())
1365 return AVERROR(EIO);
c8965800 1366redirect:
f5d33f52 1367 rt->control_transport = RTSP_MODE_PLAIN;
53620bba 1368 /* extract hostname and port */
f3bfe388 1369 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1370 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1371 if (*auth) {
aa8bf2fb 1372 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1373 }
53620bba
RB
1374 if (port < 0)
1375 port = RTSP_DEFAULT_PORT;
1376
1377 /* search for options */
602eb779 1378 option_list = strrchr(path, '?');
53620bba 1379 if (option_list) {
2a21adf9
MS
1380 /* Strip out the RTSP specific options, write out the rest of
1381 * the options back into the same string. */
1382 filename = option_list;
c8965800 1383 while (option_list) {
53620bba 1384 /* move the option pointer */
921da217 1385 option = ++option_list;
53620bba
RB
1386 option_list = strchr(option_list, '&');
1387 if (option_list)
921da217
LB
1388 *option_list = 0;
1389
53620bba 1390 /* handle the options */
c8965800 1391 if (!strcmp(option, "udp")) {
7a033e08 1392 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1393 } else if (!strcmp(option, "multicast")) {
7a033e08 1394 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1395 } else if (!strcmp(option, "tcp")) {
7a033e08 1396 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
f5d33f52
JA
1397 } else if(!strcmp(option, "http")) {
1398 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
1399 rt->control_transport = RTSP_MODE_TUNNEL;
c8965800 1400 } else {
2a21adf9
MS
1401 /* Write options back into the buffer, using memmove instead
1402 * of strcpy since the strings may overlap. */
1403 int len = strlen(option);
1404 memmove(++filename, option, len);
1405 filename += len;
921da217
LB
1406 if (option_list) *filename = '&';
1407 }
53620bba 1408 }
921da217 1409 *filename = 0;
53620bba
RB
1410 }
1411
90abbdba 1412 if (!lower_transport_mask)
2a1d51c5 1413 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1414
3e24c770 1415 if (s->oformat) {
b7dc88fc
MS
1416 /* Only UDP or TCP - UDP multicast isn't supported. */
1417 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1418 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1419 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1420 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1421 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1422 err = AVERROR(EINVAL);
1423 goto fail;
1424 }
1425 }
1426
4bc5cc23
MS
1427 /* Construct the URI used in request; this is similar to s->filename,
1428 * but with authentication credentials removed and RTSP specific options
1429 * stripped out. */
1430 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1431 host, port, "%s", path);
1432
f5d33f52
JA
1433 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1434 /* set up initial handshake for tunneling */
1435 char httpname[1024];
1436 char sessioncookie[17];
1437 char headers[1024];
1438
10ed37b5 1439 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1440 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1441 av_get_random_seed(), av_get_random_seed());
1442
1443 /* GET requests */
9290f15d 1444 if (url_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) {
f5d33f52
JA
1445 err = AVERROR(EIO);
1446 goto fail;
1447 }
1448
1449 /* generate GET headers */
1450 snprintf(headers, sizeof(headers),
1451 "x-sessioncookie: %s\r\n"
1452 "Accept: application/x-rtsp-tunnelled\r\n"
1453 "Pragma: no-cache\r\n"
1454 "Cache-Control: no-cache\r\n",
1455 sessioncookie);
00e4a1f4 1456 ff_http_set_headers(rt->rtsp_hd, headers);
f5d33f52
JA
1457
1458 /* complete the connection */
9290f15d 1459 if (url_connect(rt->rtsp_hd)) {
f5d33f52
JA
1460 err = AVERROR(EIO);
1461 goto fail;
1462 }
1463
1464 /* POST requests */
9290f15d 1465 if (url_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) {
f5d33f52
JA
1466 err = AVERROR(EIO);
1467 goto fail;
1468 }
1469
1470 /* generate POST headers */
1471 snprintf(headers, sizeof(headers),
1472 "x-sessioncookie: %s\r\n"
1473 "Content-Type: application/x-rtsp-tunnelled\r\n"
1474 "Pragma: no-cache\r\n"
1475 "Cache-Control: no-cache\r\n"
1476 "Content-Length: 32767\r\n"
1477 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1478 sessioncookie);
00e4a1f4
JA
1479 ff_http_set_headers(rt->rtsp_hd_out, headers);
1480 ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
f5d33f52 1481
a8ead332
MS
1482 /* Initialize the authentication state for the POST session. The HTTP
1483 * protocol implementation doesn't properly handle multi-pass
1484 * authentication for POST requests, since it would require one of
1485 * the following:
1486 * - implementing Expect: 100-continue, which many HTTP servers
1487 * don't support anyway, even less the RTSP servers that do HTTP
1488 * tunneling
1489 * - sending the whole POST data until getting a 401 reply specifying
1490 * what authentication method to use, then resending all that data
1491 * - waiting for potential 401 replies directly after sending the
1492 * POST header (waiting for some unspecified time)
1493 * Therefore, we copy the full auth state, which works for both basic
1494 * and digest. (For digest, we would have to synchronize the nonce
1495 * count variable between the two sessions, if we'd do more requests
1496 * with the original session, though.)
1497 */
1498 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1499
9290f15d
MS
1500 /* complete the connection */
1501 if (url_connect(rt->rtsp_hd_out)) {
1502 err = AVERROR(EIO);
1503 goto fail;
1504 }
f5d33f52 1505 } else {
48e77473 1506 /* open the tcp connection */
41874d0a 1507 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
00e4a1f4 1508 if (url_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) {
41874d0a
JA
1509 err = AVERROR(EIO);
1510 goto fail;
1511 }
00e4a1f4 1512 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1513 }
53620bba
RB
1514 rt->seq = 0;
1515
00e4a1f4 1516 tcp_fd = url_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1517 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1518 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1519 NULL, 0, NI_NUMERICHOST);
1520 }
1521
c8965800
RB
1522 /* request options supported by the server; this also detects server
1523 * type */
1cf151e9 1524 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1525 cmd[0] = 0;
2e889ae4 1526 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1527 av_strlcat(cmd,
1528 /**
1529 * The following entries are required for proper
1530 * streaming from a Realmedia server. They are
1531 * interdependent in some way although we currently
1532 * don't quite understand how. Values were copied
1533 * from mplayer SVN r23589.
1534 * @param CompanyID is a 16-byte ID in base64
1535 * @param ClientChallenge is a 16-byte ID in hex
1536 */
1537 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1538 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1539 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1540 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1541 sizeof(cmd));
b17d11c6 1542 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1543 if (reply->status_code != RTSP_STATUS_OK) {
1544 err = AVERROR_INVALIDDATA;
1545 goto fail;
1546 }
1547
1548 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1549 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1550 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1551 continue;
7a86bafa
RB
1552 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1553 rt->server_type = RTSP_SERVER_WMS;
c8965800 1554 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1555 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1556 break;
1557 }
1558
3e24c770 1559 if (s->iformat)
6e69f6c4 1560 err = rtsp_setup_input_streams(s, reply);
3e24c770 1561 else
26cb700c 1562 err = rtsp_setup_output_streams(s, host);
e23d195d 1563 if (err)
53620bba 1564 goto fail;
53620bba 1565
8a8754d8 1566 do {
c8965800
RB
1567 int lower_transport = ff_log2_tab[lower_transport_mask &
1568 ~(lower_transport_mask - 1)];
8a8754d8 1569
90abbdba 1570 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1571 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1572 real_challenge : NULL);
8a8754d8 1573 if (err < 0)
7e6ca34f 1574 goto fail;
90abbdba
RB
1575 lower_transport_mask &= ~(1 << lower_transport);
1576 if (lower_transport_mask == 0 && err == 1) {
adef229e 1577 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1578 goto fail;
1579 }
1580 } while (err);
53620bba 1581
ff762d6e 1582 rt->state = RTSP_STATE_IDLE;
c8965800 1583 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1584 return 0;
1585 fail:
3307e6ea 1586 ff_rtsp_close_streams(s);
b8c2c41d 1587 ff_rtsp_close_connections(s);
35cfd646 1588 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1589 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1590 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1591 reply->status_code,
1592 s->filename);
1593 goto redirect;
1594 }
57b5555c 1595 ff_network_close();
1617ad97
FB
1596 return err;
1597}
6f5a3d0a 1598#endif
1617ad97 1599
6f5a3d0a 1600#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1601static int rtsp_read_header(AVFormatContext *s,
1602 AVFormatParameters *ap)
1603{
4280f9bb
MS
1604 int ret;
1605
3307e6ea 1606 ret = ff_rtsp_connect(s);
4280f9bb
MS
1607 if (ret)
1608 return ret;
1609
1610 if (ap->initial_pause) {
1611 /* do not start immediately */
1612 } else {
1613 if (rtsp_read_play(s) < 0) {
3307e6ea 1614 ff_rtsp_close_streams(s);
b8c2c41d 1615 ff_rtsp_close_connections(s);
4280f9bb
MS
1616 return AVERROR_INVALIDDATA;
1617 }
1618 }
1619
1620 return 0;
1621}
1622
0e59034e
RB
1623static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1624 uint8_t *buf, int buf_size)
1625{
1626 RTSPState *rt = s->priv_data;
1627 RTSPStream *rtsp_st;
1628 fd_set rfds;
9cba6f5f 1629 int fd, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1630 struct timeval tv;
1631
c8965800 1632 for (;;) {
0e59034e
RB
1633 if (url_interrupt_cb())
1634 return AVERROR(EINTR);
1635 FD_ZERO(&rfds);
1636 if (rt->rtsp_hd) {
1637 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1638 FD_SET(tcp_fd, &rfds);
1639 } else {
1640 fd_max = 0;
1641 tcp_fd = -1;
1642 }
c8965800 1643 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1644 rtsp_st = rt->rtsp_streams[i];
1645 if (rtsp_st->rtp_handle) {
1646 /* currently, we cannot probe RTCP handle because of
1647 * blocking restrictions */
1648 fd = url_get_file_handle(rtsp_st->rtp_handle);
1649 if (fd > fd_max)
1650 fd_max = fd;
1651 FD_SET(fd, &rfds);
1652 }
1653 }
1654 tv.tv_sec = 0;
9cba6f5f 1655 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1656 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1657 if (n > 0) {
9cba6f5f 1658 timeout_cnt = 0;
c8965800 1659 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1660 rtsp_st = rt->rtsp_streams[i];
1661 if (rtsp_st->rtp_handle) {
1662 fd = url_get_file_handle(rtsp_st->rtp_handle);
1663 if (FD_ISSET(fd, &rfds)) {
1664 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1665 if (ret > 0) {
1666 *prtsp_st = rtsp_st;
1667 return ret;
1668 }
1669 }
1670 }
1671 }
1672#if CONFIG_RTSP_DEMUXER
27000636 1673 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1674 RTSPMessageHeader reply;
1675
3032276b
MS
1676 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1677 if (ret < 0)
1678 return ret;
0e59034e 1679 /* XXX: parse message */
c02fd3d2 1680 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1681 return 0;
1682 }
1683#endif
9cba6f5f 1684 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1685 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1686 } else if (n < 0 && errno != EINTR)
1687 return AVERROR(errno);
0e59034e
RB
1688 }
1689}
1690
8b1ab7bf
FB
1691static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1692 uint8_t *buf, int buf_size)
1617ad97
FB
1693{
1694 RTSPState *rt = s->priv_data;
b6892136 1695 int id, len, i, ret;
1617ad97 1696 RTSPStream *rtsp_st;
1617ad97 1697
b6892136 1698#ifdef DEBUG_RTP_TCP
67c9cd69 1699 dprintf(s, "tcp_read_packet:\n");
b6892136 1700#endif
c8965800
RB
1701redo:
1702 for (;;) {
7e726132
RB
1703 RTSPMessageHeader reply;
1704
3307e6ea 1705 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1706 if (ret == -1)
8b1ab7bf 1707 return -1;
7e726132 1708 if (ret == 1) /* received '$' */
1617ad97 1709 break;
7e726132 1710 /* XXX: parse message */
c02fd3d2 1711 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1712 return 0;
1617ad97 1713 }
0e848977 1714 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1715 if (ret != 3)
8b1ab7bf 1716 return -1;
c8965800 1717 id = buf[0];
80fb8234 1718 len = AV_RB16(buf + 1);
b6892136 1719#ifdef DEBUG_RTP_TCP
67c9cd69 1720 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1721#endif
8b1ab7bf 1722 if (len > buf_size || len < 12)
1617ad97
FB
1723 goto redo;
1724 /* get the data */
0e848977 1725 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1726 if (ret != len)
8b1ab7bf 1727 return -1;
985b05d3 1728 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1729 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1730 return -1;
115329f1 1731
1617ad97 1732 /* find the matching stream */
c8965800 1733 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1734 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1735 if (id >= rtsp_st->interleaved_min &&
1736 id <= rtsp_st->interleaved_max)
1617ad97
FB
1737 goto found;
1738 }
1739 goto redo;
c8965800 1740found:
8b1ab7bf
FB
1741 *prtsp_st = rtsp_st;
1742 return len;
1617ad97
FB
1743}
1744
0e59034e
RB
1745static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1746{
1747 RTSPState *rt = s->priv_data;
1748 int ret, len;
1749 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1750 RTSPStream *rtsp_st;
1751
1752 /* get next frames from the same RTP packet */
1753 if (rt->cur_transport_priv) {
c8965800 1754 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1755 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1756 } else
0e59034e
RB
1757 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1758 if (ret == 0) {
1759 rt->cur_transport_priv = NULL;
1760 return 0;
1761 } else if (ret == 1) {
1762 return 0;
c8965800 1763 } else
0e59034e 1764 rt->cur_transport_priv = NULL;
0e59034e
RB
1765 }
1766
1767 /* read next RTP packet */
1768 redo:
1769 switch(rt->lower_transport) {
1770 default:
1771#if CONFIG_RTSP_DEMUXER
1772 case RTSP_LOWER_TRANSPORT_TCP:
1773 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1774 break;
1775#endif
1776 case RTSP_LOWER_TRANSPORT_UDP:
1777 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1778 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1779 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1780 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1781 break;
1782 }
1783 if (len < 0)
1784 return len;
1785 if (len == 0)
1786 return AVERROR_EOF;
c8965800 1787 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1788 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48 1789 } else {
0e59034e 1790 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48
MS
1791 if (ret < 0) {
1792 /* Either bad packet, or a RTCP packet. Check if the
1793 * first_rtcp_ntp_time field was initialized. */
1794 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1795 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1796 /* first_rtcp_ntp_time has been initialized for this stream,
1797 * copy the same value to all other uninitialized streams,
1798 * in order to map their timestamp origin to the same ntp time
1799 * as this one. */
1800 int i;
1801 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1802 RTPDemuxContext *rtpctx2 = rtsp_st->transport_priv;
1803 if (rtpctx2 &&
1804 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1805 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1806 }
1807 }
1808 }
1809 }
0e59034e
RB
1810 if (ret < 0)
1811 goto redo;
c8965800 1812 if (ret == 1)
0e59034e
RB
1813 /* more packets may follow, so we save the RTP context */
1814 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1815
1816 return ret;
1817}
1818
c8965800 1819static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1820{
1821 RTSPState *rt = s->priv_data;
98713182 1822 int ret;
30e79845
RB
1823 RTSPMessageHeader reply1, *reply = &reply1;
1824 char cmd[1024];
8b1ab7bf 1825
572c6a38 1826 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1827 int i;
572c6a38 1828 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1829
572c6a38
RB
1830 for (i = 0; i < s->nb_streams; i++)
1831 cache[i] = s->streams[i]->discard;
1832
1833 if (!rt->need_subscription) {
1834 if (memcmp (cache, rt->real_setup_cache,
1835 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1836 snprintf(cmd, sizeof(cmd),
7eaa646f 1837 "Unsubscribe: %s\r\n",
b17d11c6
MS
1838 rt->last_subscription);
1839 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1840 cmd, reply, NULL);
572c6a38
RB
1841 if (reply->status_code != RTSP_STATUS_OK)
1842 return AVERROR_INVALIDDATA;
1843 rt->need_subscription = 1;
1844 }
1256d16b 1845 }
1256d16b 1846
572c6a38
RB
1847 if (rt->need_subscription) {
1848 int r, rule_nr, first = 1;
1849
1850 memcpy(rt->real_setup_cache, cache,
1851 sizeof(enum AVDiscard) * s->nb_streams);
1852 rt->last_subscription[0] = 0;
1853
1854 snprintf(cmd, sizeof(cmd),
b17d11c6 1855 "Subscribe: ");
572c6a38
RB
1856 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1857 rule_nr = 0;
1858 for (r = 0; r < s->nb_streams; r++) {
1859 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1860 if (s->streams[r]->discard != AVDISCARD_ALL) {
1861 if (!first)
1862 av_strlcat(rt->last_subscription, ",",
1863 sizeof(rt->last_subscription));
1864 ff_rdt_subscribe_rule(
1865 rt->last_subscription,
1866 sizeof(rt->last_subscription), i, rule_nr);
1867 first = 0;
1868 }
1869 rule_nr++;
1870 }
1871 }
1872 }
1873 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1874 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1875 cmd, reply, NULL);
572c6a38
RB
1876 if (reply->status_code != RTSP_STATUS_OK)
1877 return AVERROR_INVALIDDATA;
1878 rt->need_subscription = 0;
1879
c02fd3d2 1880 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1881 rtsp_read_play (s);
1882 }
1256d16b
RB
1883 }
1884
d7250724 1885 ret = rtsp_fetch_packet(s, pkt);
c8965800 1886 if (ret < 0)
98713182 1887 return ret;
30e79845
RB
1888
1889 /* send dummy request to keep TCP connection alive */
1890 if ((rt->server_type == RTSP_SERVER_WMS ||
1891 rt->server_type == RTSP_SERVER_REAL) &&
1892 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1893 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 1894 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 1895 } else {
b17d11c6 1896 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
1897 }
1898 }
1899
8b1ab7bf 1900 return 0;
1617ad97
FB
1901}
1902
ff762d6e
FB
1903/* pause the stream */
1904static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1905{
ff762d6e 1906 RTSPState *rt = s->priv_data;
a9e534d5 1907 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 1908
c02fd3d2 1909 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1910 return 0;
2e889ae4 1911 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 1912 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
1913 if (reply->status_code != RTSP_STATUS_OK) {
1914 return -1;
1915 }
1256d16b 1916 }
5f86057f
RB
1917 rt->state = RTSP_STATE_PAUSED;
1918 return 0;
b7b8fc34
FB
1919}
1920
115329f1 1921static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1922 int64_t timestamp, int flags)
ff762d6e
FB
1923{
1924 RTSPState *rt = s->priv_data;
115329f1 1925
c8965800
RB
1926 rt->seek_timestamp = av_rescale_q(timestamp,
1927 s->streams[stream_index]->time_base,
1928 AV_TIME_BASE_Q);
ff762d6e
FB
1929 switch(rt->state) {
1930 default:
1931 case RTSP_STATE_IDLE:
1932 break;
c02fd3d2 1933 case RTSP_STATE_STREAMING:
ec606b36
LB
1934 if (rtsp_read_pause(s) != 0)
1935 return -1;
1936 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1937 if (rtsp_read_play(s) != 0)
1938 return -1;
1939 break;
1940 case RTSP_STATE_PAUSED:
1941 rt->state = RTSP_STATE_IDLE;
1942 break;
1943 }
1944 return 0;
1945}
1946
1617ad97
FB
1947static int rtsp_read_close(AVFormatContext *s)
1948{
1949 RTSPState *rt = s->priv_data;
1617ad97 1950
b6892136 1951#if 0
1617ad97 1952 /* NOTE: it is valid to flush the buffer here */
90abbdba 1953 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1954 url_fclose(&rt->rtsp_gb);
1955 }
b6892136 1956#endif
b17d11c6 1957 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 1958
3307e6ea 1959 ff_rtsp_close_streams(s);
b8c2c41d 1960 ff_rtsp_close_connections(s);
57b5555c 1961 ff_network_close();
1617ad97
FB
1962 return 0;
1963}
1964
d2a067d1 1965AVInputFormat rtsp_demuxer = {
1617ad97 1966 "rtsp",
bde15e74 1967 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
1968 sizeof(RTSPState),
1969 rtsp_probe,
1970 rtsp_read_header,
1971 rtsp_read_packet,
1972 rtsp_read_close,
ff762d6e 1973 rtsp_read_seek,
bb76a117 1974 .flags = AVFMT_NOFILE,
ff762d6e
FB
1975 .read_play = rtsp_read_play,
1976 .read_pause = rtsp_read_pause,
1617ad97 1977};
96862926 1978#endif
1617ad97 1979
cb1fdc61 1980static int sdp_probe(AVProbeData *p1)
93ced3e8 1981{
0e1ceacd 1982 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
1983
1984 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 1985 while (p < p_end && *p != '\0') {
c8965800
RB
1986 if (p + sizeof("c=IN IP4") - 1 < p_end &&
1987 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 1988 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1989
c8965800 1990 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1991 if (++p >= p_end)
cb1fdc61 1992 break;
cb1fdc61
FB
1993 if (*p == '\r')
1994 p++;
1995 }
93ced3e8
FB
1996 return 0;
1997}
1998
1999#define SDP_MAX_SIZE 8192
2000
c8965800 2001static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2002{
8b1ab7bf 2003 RTSPState *rt = s->priv_data;
93ced3e8
FB
2004 RTSPStream *rtsp_st;
2005 int size, i, err;
2006 char *content;
2007 char url[1024];
2008
57b5555c
MS
2009 if (!ff_network_init())
2010 return AVERROR(EIO);
2011
93ced3e8
FB
2012 /* read the whole sdp file */
2013 /* XXX: better loading */
2014 content = av_malloc(SDP_MAX_SIZE);
899681cd 2015 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2016 if (size <= 0) {
2017 av_free(content);
2018 return AVERROR_INVALIDDATA;
2019 }
2020 content[size] ='\0';
2021
2022 sdp_parse(s, content);
2023 av_free(content);
2024
2025 /* open each RTP stream */
c8965800 2026 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 2027 rtsp_st = rt->rtsp_streams[i];
115329f1 2028
57b5555c
MS
2029 ff_url_join(url, sizeof(url), "rtp", NULL,
2030 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
2031 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2032 rtsp_st->sdp_ttl);
dbf30963 2033 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2034 err = AVERROR_INVALIDDATA;
2035 goto fail;
2036 }
ee0cb67f 2037 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2038 goto fail;
93ced3e8
FB
2039 }
2040 return 0;
c8965800 2041fail:
3307e6ea 2042 ff_rtsp_close_streams(s);
57b5555c 2043 ff_network_close();
93ced3e8
FB
2044 return err;
2045}
2046
93ced3e8
FB
2047static int sdp_read_close(AVFormatContext *s)
2048{
3307e6ea 2049 ff_rtsp_close_streams(s);
57b5555c 2050 ff_network_close();
93ced3e8
FB
2051 return 0;
2052}
2053
ff70e601 2054AVInputFormat sdp_demuxer = {
93ced3e8 2055 "sdp",
bde15e74 2056 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2057 sizeof(RTSPState),
2058 sdp_probe,
2059 sdp_read_header,
d7250724 2060 rtsp_fetch_packet,
93ced3e8
FB
2061 sdp_read_close,
2062};