FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* RTSP/SDP client
3			* Copyright (c) 2002 Fabrice Bellard
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
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
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			#include "config_components.h"
23
24			#include "libavutil/avassert.h"
25			#include "libavutil/base64.h"
26			#include "libavutil/bprint.h"
27			#include "libavutil/avstring.h"
28			#include "libavutil/intreadwrite.h"
29			#include "libavutil/mathematics.h"
30			#include "libavutil/mem.h"
31			#include "libavutil/parseutils.h"
32			#include "libavutil/random_seed.h"
33			#include "libavutil/dict.h"
34			#include "libavutil/opt.h"
35			#include "libavutil/time.h"
36			#include "libavcodec/codec_desc.h"
37			#include "avformat.h"
38			#include "avio_internal.h"
39			#include "demux.h"
40
41			#if HAVE_POLL_H
42			#include <poll.h>
43			#endif
44			#include "internal.h"
45			#include "network.h"
46			#include "os_support.h"
47			#include "http.h"
48			#include "rtsp.h"
49
50			#include "rtpdec.h"
51			#include "rtpproto.h"
52			#include "rdt.h"
53			#include "rtpdec_formats.h"
54			#include "rtpenc_chain.h"
55			#include "url.h"
56			#include "tls.h"
57			#include "rtpenc.h"
58			#include "mpegts.h"
59			#include "version.h"
60
61			/* Default timeout values for read packet in seconds */
62			#define READ_PACKET_TIMEOUT_S 10
63			#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
64			#define DEFAULT_REORDERING_DELAY 100000
65
66			#define OFFSET(x) offsetof(RTSPState, x)
67			#define DEC AV_OPT_FLAG_DECODING_PARAM
68			#define ENC AV_OPT_FLAG_ENCODING_PARAM
69
70			#define RTSP_FLAG_OPTS(name, longname) \
71			{ name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, .unit = "rtsp_flags" }, \
72			{ "filter_src", "only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, .unit = "rtsp_flags" }
73
74			#define RTSP_MEDIATYPE_OPTS(name, longname) \
75			{ name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_SUBTITLE+1)) - 1 }, INT_MIN, INT_MAX, DEC, .unit = "allowed_media_types" }, \
76			{ "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, .unit = "allowed_media_types" }, \
77			{ "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, .unit = "allowed_media_types" }, \
78			{ "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, .unit = "allowed_media_types" }, \
79			{ "subtitle", "Subtitle", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_SUBTITLE}, 0, 0, DEC, .unit = "allowed_media_types" }
80
81			#define COMMON_OPTS() \
82			{ "reorder_queue_size", "set number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }, \
83			{ "buffer_size", "Underlying protocol send/receive buffer size", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC|ENC }, \
84			{ "pkt_size", "Underlying protocol send packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = 1472 }, -1, INT_MAX, ENC } \
85
86
87			const AVOption ff_rtsp_options[] = {
88			{ "initial_pause", "do not start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC },
89			FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
90			{ "rtsp_transport", "set RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, .unit = "rtsp_transport" }, \
91			{ "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, .unit = "rtsp_transport" }, \
92			{ "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, .unit = "rtsp_transport" }, \
93			{ "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, .unit = "rtsp_transport" },
94			{ "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, .unit = "rtsp_transport" },
95			{ "https", "HTTPS tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTPS )}, 0, 0, DEC, .unit = "rtsp_transport" },
96			RTSP_FLAG_OPTS("rtsp_flags", "set RTSP flags"),
97			{ "listen", "wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, .unit = "rtsp_flags" },
98			{ "prefer_tcp", "try RTP via TCP first, if available", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_PREFER_TCP}, 0, 0, DEC|ENC, .unit = "rtsp_flags" },
99			{ "satip_raw", "export raw MPEG-TS stream instead of demuxing", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_SATIP_RAW}, 0, 0, DEC, .unit = "rtsp_flags" },
100			RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
101			{ "min_port", "set minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
102			{ "max_port", "set maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
103			{ "listen_timeout", "set maximum timeout (in seconds) to wait for incoming connections (-1 is infinite, imply flag listen)", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC },
104			{ "timeout", "set timeout (in microseconds) of socket I/O operations", OFFSET(stimeout), AV_OPT_TYPE_INT64, {.i64 = 0}, INT_MIN, INT64_MAX, DEC },
105			COMMON_OPTS(),
106			{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, DEC },
107
108			// TLS options
109			FF_TLS_CLIENT_OPTIONS(RTSPState, tls_opts),
110			{ NULL },
111			};
112
113			static const AVOption sdp_options[] = {
114			RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
115			{ "custom_io", "use custom I/O", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, .unit = "rtsp_flags" },
116			{ "rtcp_to_source", "send RTCP packets to the source address of received packets", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_RTCP_TO_SOURCE}, 0, 0, DEC, .unit = "rtsp_flags" },
117			{ "listen_timeout", "set maximum timeout (in seconds) to wait for incoming connections", OFFSET(stimeout), AV_OPT_TYPE_DURATION, {.i64 = READ_PACKET_TIMEOUT_S*1000000}, INT_MIN, INT64_MAX, DEC },
118			{ "localaddr", "local address", OFFSET(localaddr),AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, \
119			RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
120			COMMON_OPTS(),
121			{ NULL },
122			};
123
124			static const AVOption rtp_options[] = {
125			RTSP_FLAG_OPTS("rtp_flags", "set RTP flags"),
126			{ "listen_timeout", "set maximum timeout (in seconds) to wait for incoming connections", OFFSET(stimeout), AV_OPT_TYPE_DURATION, {.i64 = READ_PACKET_TIMEOUT_S*1000000}, INT_MIN, INT64_MAX, DEC },
127			{ "localaddr", "local address", OFFSET(localaddr),AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, \
128			RTSP_MEDIATYPE_OPTS("allowed_media_types", "set media types to accept from the server"),
129			COMMON_OPTS(),
130			{ NULL },
131			};
132
133
134		✗	static AVDictionary *map_to_opts(RTSPState *rt)
135			{
136		✗	AVDictionary *opts = NULL;
137
138		✗	av_dict_set_int(&opts, "buffer_size", rt->buffer_size, 0);
139		✗	av_dict_set_int(&opts, "pkt_size", rt->pkt_size, 0);
140		✗	if (rt->localaddr && rt->localaddr[0])
141		✗	av_dict_set(&opts, "localaddr", rt->localaddr, 0);
142
143		✗	return opts;
144			}
145
146			#define ERR_RET(c) \
147			do { \
148			int ret = c; \
149			if (ret < 0) \
150			return ret; \
151			} while (0)
152
153			/**
154			* Add the TLS options of the given RTSPState to the dict
155			*/
156		✗	static int copy_tls_opts_dict(RTSPState *rt, AVDictionary **dict)
157			{
158		✗	ERR_RET(av_dict_set_int(dict, "tls_verify", rt->tls_opts.verify, 0));
159		✗	ERR_RET(av_dict_set(dict, "ca_file", rt->tls_opts.ca_file, 0));
160		✗	ERR_RET(av_dict_set(dict, "cert_file", rt->tls_opts.cert_file, 0));
161		✗	ERR_RET(av_dict_set(dict, "key_file", rt->tls_opts.key_file, 0));
162		✗	ERR_RET(av_dict_set(dict, "verifyhost", rt->tls_opts.host, 0));
163
164		✗	return 0;
165			}
166
167			#undef ERR_RET
168
169		✗	static void get_word_until_chars(char *buf, int buf_size,
170			const char *sep, const char **pp)
171			{
172			const char *p;
173			char *q;
174
175		✗	p = *pp;
176		✗	p += strspn(p, SPACE_CHARS);
177		✗	q = buf;
178		✗	while (!strchr(sep, *p) && *p != '\0') {
179		✗	if ((q - buf) < buf_size - 1)
180		✗	*q++ = *p;
181		✗	p++;
182			}
183		✗	if (buf_size > 0)
184		✗	*q = '\0';
185		✗	*pp = p;
186		✗	}
187
188		✗	static void get_word_sep(char *buf, int buf_size, const char *sep,
189			const char **pp)
190			{
191		✗	if (**pp == '/') (*pp)++;
192		✗	get_word_until_chars(buf, buf_size, sep, pp);
193		✗	}
194
195		✗	static void get_word(char *buf, int buf_size, const char **pp)
196			{
197		✗	get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
198		✗	}
199
200			/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
201			* and end time.
202			* Used for seeking in the rtp stream.
203			*/
204		✗	static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
205			{
206			char buf[256];
207
208		✗	p += strspn(p, SPACE_CHARS);
209		✗	if (!av_stristart(p, "npt=", &p))
210		✗	return;
211
212		✗	*start = AV_NOPTS_VALUE;
213		✗	*end = AV_NOPTS_VALUE;
214
215		✗	get_word_sep(buf, sizeof(buf), "-", &p);
216		✗	if (av_parse_time(start, buf, 1) < 0)
217		✗	return;
218		✗	if (*p == '-') {
219		✗	p++;
220		✗	get_word_sep(buf, sizeof(buf), "-", &p);
221		✗	if (av_parse_time(end, buf, 1) < 0)
222		✗	av_log(NULL, AV_LOG_DEBUG, "Failed to parse interval end specification '%s'\n", buf);
223			}
224			}
225
226		✗	static int get_sockaddr(AVFormatContext *s,
227			const char *buf, struct sockaddr_storage *sock)
228			{
229		✗	struct addrinfo hints = { 0 }, *ai = NULL;
230			int ret;
231
232		✗	hints.ai_flags = AI_NUMERICHOST;
233		✗	if ((ret = getaddrinfo(buf, NULL, &hints, &ai))) {
234		✗	av_log(s, AV_LOG_ERROR, "getaddrinfo(%s): %s\n",
235			buf,
236			gai_strerror(ret));
237		✗	return -1;
238			}
239		✗	memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
240		✗	freeaddrinfo(ai);
241		✗	return 0;
242			}
243
244			#if CONFIG_RTPDEC
245		✗	static void init_rtp_handler(const RTPDynamicProtocolHandler *handler,
246			RTSPStream *rtsp_st, AVStream *st)
247			{
248		✗	AVCodecParameters *par = st ? st->codecpar : NULL;
249		✗	if (!handler)
250		✗	return;
251		✗	if (par)
252		✗	par->codec_id = handler->codec_id;
253		✗	rtsp_st->dynamic_handler = handler;
254		✗	if (st)
255		✗	ffstream(st)->need_parsing = handler->need_parsing;
256		✗	if (handler->priv_data_size) {
257		✗	rtsp_st->dynamic_protocol_context = av_mallocz(handler->priv_data_size);
258		✗	if (!rtsp_st->dynamic_protocol_context)
259		✗	rtsp_st->dynamic_handler = NULL;
260			}
261			}
262
263		✗	static void finalize_rtp_handler_init(AVFormatContext *s, RTSPStream *rtsp_st,
264			AVStream *st)
265			{
266		✗	if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) {
267		✗	int ret = rtsp_st->dynamic_handler->init(s, st ? st->index : -1,
268			rtsp_st->dynamic_protocol_context);
269		✗	if (ret < 0) {
270		✗	if (rtsp_st->dynamic_protocol_context) {
271		✗	if (rtsp_st->dynamic_handler->close)
272		✗	rtsp_st->dynamic_handler->close(
273			rtsp_st->dynamic_protocol_context);
274		✗	av_free(rtsp_st->dynamic_protocol_context);
275			}
276		✗	rtsp_st->dynamic_protocol_context = NULL;
277		✗	rtsp_st->dynamic_handler = NULL;
278			}
279			}
280		✗	}
281
282			#if CONFIG_RTSP_DEMUXER
283		✗	static int init_satip_stream(AVFormatContext *s)
284			{
285		✗	RTSPState *rt = s->priv_data;
286		✗	RTSPStream *rtsp_st = av_mallocz(sizeof(RTSPStream));
287		✗	if (!rtsp_st)
288		✗	return AVERROR(ENOMEM);
289		✗	dynarray_add(&rt->rtsp_streams,
290			&rt->nb_rtsp_streams, rtsp_st);
291
292		✗	rtsp_st->sdp_payload_type = 33; // MP2T
293		✗	av_strlcpy(rtsp_st->control_url,
294		✗	rt->control_uri, sizeof(rtsp_st->control_url));
295
296		✗	if (rt->rtsp_flags & RTSP_FLAG_SATIP_RAW) {
297		✗	AVStream *st = avformat_new_stream(s, NULL);
298		✗	if (!st)
299		✗	return AVERROR(ENOMEM);
300		✗	st->id = rt->nb_rtsp_streams - 1;
301		✗	rtsp_st->stream_index = st->index;
302		✗	st->codecpar->codec_type = AVMEDIA_TYPE_DATA;
303		✗	st->codecpar->codec_id = AV_CODEC_ID_MPEG2TS;
304			} else {
305		✗	rtsp_st->stream_index = -1;
306		✗	init_rtp_handler(&ff_mpegts_dynamic_handler, rtsp_st, NULL);
307		✗	finalize_rtp_handler_init(s, rtsp_st, NULL);
308			}
309		✗	return 0;
310			}
311			#endif
312
313			/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
314		✗	static int sdp_parse_rtpmap(AVFormatContext *s,
315			AVStream *st, RTSPStream *rtsp_st,
316			int payload_type, const char *p)
317			{
318		✗	AVCodecParameters *par = st->codecpar;
319			char buf[256];
320			int i;
321			const AVCodecDescriptor *desc;
322			const char *c_name;
323
324			/* See if we can handle this kind of payload.
325			* The space should normally not be there but some Real streams or
326			* particular servers ("RealServer Version 6.1.3.970", see issue 1658)
327			* have a trailing space. */
328		✗	get_word_sep(buf, sizeof(buf), "/ ", &p);
329		✗	if (payload_type < RTP_PT_PRIVATE) {
330			/* We are in a standard case
331			* (from http://www.iana.org/assignments/rtp-parameters). */
332		✗	par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
333			}
334
335		✗	if (par->codec_id == AV_CODEC_ID_NONE) {
336			const RTPDynamicProtocolHandler *handler =
337		✗	ff_rtp_handler_find_by_name(buf, par->codec_type);
338		✗	init_rtp_handler(handler, rtsp_st, st);
339			/* If no dynamic handler was found, check with the list of standard
340			* allocated types, if such a stream for some reason happens to
341			* use a private payload type. This isn't handled in rtpdec.c, since
342			* the format name from the rtpmap line never is passed into rtpdec. */
343		✗	if (!rtsp_st->dynamic_handler)
344		✗	par->codec_id = ff_rtp_codec_id(buf, par->codec_type);
345			}
346
347		✗	desc = avcodec_descriptor_get(par->codec_id);
348		✗	if (desc && desc->name)
349		✗	c_name = desc->name;
350			else
351		✗	c_name = "(null)";
352
353		✗	get_word_sep(buf, sizeof(buf), "/", &p);
354		✗	i = atoi(buf);
355		✗	switch (par->codec_type) {
356		✗	case AVMEDIA_TYPE_AUDIO:
357		✗	av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
358		✗	par->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
359		✗	par->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
360		✗	if (i > 0) {
361		✗	par->sample_rate = i;
362		✗	avpriv_set_pts_info(st, 32, 1, par->sample_rate);
363		✗	get_word_sep(buf, sizeof(buf), "/", &p);
364		✗	i = atoi(buf);
365		✗	if (i > 0)
366		✗	av_channel_layout_default(&par->ch_layout, i);
367			}
368		✗	av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
369			par->sample_rate);
370		✗	av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
371			par->ch_layout.nb_channels);
372		✗	break;
373		✗	case AVMEDIA_TYPE_VIDEO:
374		✗	av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
375		✗	if (i > 0)
376		✗	avpriv_set_pts_info(st, 32, 1, i);
377		✗	break;
378		✗	default:
379		✗	break;
380			}
381		✗	finalize_rtp_handler_init(s, rtsp_st, st);
382		✗	return 0;
383			}
384
385			/* parse the attribute line from the fmtp a line of an sdp response. This
386			* is broken out as a function because it is used in rtp_h264.c, which is
387			* forthcoming. */
388		✗	int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
389			char *value, int value_size)
390			{
391		✗	*p += strspn(*p, SPACE_CHARS);
392		✗	if (**p) {
393		✗	get_word_sep(attr, attr_size, "=", p);
394		✗	if (**p == '=')
395		✗	(*p)++;
396		✗	get_word_sep(value, value_size, ";", p);
397		✗	if (**p == ';')
398		✗	(*p)++;
399		✗	return 1;
400			}
401		✗	return 0;
402			}
403
404			typedef struct SDPParseState {
405			/* SDP only */
406			struct sockaddr_storage default_ip;
407			int default_ttl;
408			int skip_media; ///< set if an unknown m= line occurs
409			int nb_default_include_source_addrs; /**< Number of source-specific multicast include source IP address (from SDP content) */
410			struct RTSPSource **default_include_source_addrs; /**< Source-specific multicast include source IP address (from SDP content) */
411			int nb_default_exclude_source_addrs; /**< Number of source-specific multicast exclude source IP address (from SDP content) */
412			struct RTSPSource **default_exclude_source_addrs; /**< Source-specific multicast exclude source IP address (from SDP content) */
413			int seen_rtpmap;
414			int seen_fmtp;
415			char delayed_fmtp[2048];
416			} SDPParseState;
417
418		✗	static void copy_default_source_addrs(struct RTSPSource **addrs, int count,
419			struct RTSPSource ***dest, int *dest_count)
420			{
421			RTSPSource *rtsp_src, *rtsp_src2;
422			int i;
423		✗	for (i = 0; i < count; i++) {
424		✗	rtsp_src = addrs[i];
425		✗	rtsp_src2 = av_memdup(rtsp_src, sizeof(*rtsp_src));
426		✗	if (!rtsp_src2)
427		✗	continue;
428		✗	dynarray_add(dest, dest_count, rtsp_src2);
429			}
430		✗	}
431
432		✗	static void parse_fmtp(AVFormatContext *s, RTSPState *rt,
433			int payload_type, const char *line)
434			{
435			int i;
436
437		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
438		✗	RTSPStream *rtsp_st = rt->rtsp_streams[i];
439		✗	if (rtsp_st->sdp_payload_type == payload_type &&
440		✗	rtsp_st->dynamic_handler &&
441		✗	rtsp_st->dynamic_handler->parse_sdp_a_line) {
442		✗	rtsp_st->dynamic_handler->parse_sdp_a_line(s, rtsp_st->stream_index,
443			rtsp_st->dynamic_protocol_context, line);
444			}
445			}
446		✗	}
447
448		✗	static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
449			int letter, const char *buf)
450			{
451		✗	RTSPState *rt = s->priv_data;
452			char buf1[64], st_type[64];
453			const char *p;
454			enum AVMediaType codec_type;
455			int payload_type;
456			AVStream *st;
457			RTSPStream *rtsp_st;
458			RTSPSource *rtsp_src;
459			struct sockaddr_storage sdp_ip;
460			int ttl;
461
462		✗	av_log(s, AV_LOG_TRACE, "sdp: %c='%s'\n", letter, buf);
463
464		✗	p = buf;
465		✗	if (s1->skip_media && letter != 'm')
466		✗	return;
467		✗	switch (letter) {
468		✗	case 'c':
469		✗	get_word(buf1, sizeof(buf1), &p);
470		✗	if (strcmp(buf1, "IN") != 0)
471		✗	return;
472		✗	get_word(buf1, sizeof(buf1), &p);
473		✗	if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
474		✗	return;
475		✗	get_word_sep(buf1, sizeof(buf1), "/", &p);
476		✗	if (get_sockaddr(s, buf1, &sdp_ip))
477		✗	return;
478		✗	ttl = 16;
479		✗	if (*p == '/') {
480		✗	p++;
481		✗	get_word_sep(buf1, sizeof(buf1), "/", &p);
482		✗	ttl = atoi(buf1);
483			}
484		✗	if (s->nb_streams == 0) {
485		✗	s1->default_ip = sdp_ip;
486		✗	s1->default_ttl = ttl;
487			} else {
488		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
489		✗	rtsp_st->sdp_ip = sdp_ip;
490		✗	rtsp_st->sdp_ttl = ttl;
491			}
492		✗	break;
493		✗	case 's':
494		✗	av_dict_set(&s->metadata, "title", p, 0);
495		✗	break;
496		✗	case 'i':
497		✗	if (s->nb_streams == 0) {
498		✗	av_dict_set(&s->metadata, "comment", p, 0);
499		✗	break;
500			}
501		✗	break;
502		✗	case 'm':
503			/* new stream */
504		✗	s1->skip_media = 0;
505		✗	s1->seen_fmtp = 0;
506		✗	s1->seen_rtpmap = 0;
507		✗	codec_type = AVMEDIA_TYPE_UNKNOWN;
508		✗	get_word(st_type, sizeof(st_type), &p);
509		✗	if (!strcmp(st_type, "audio")) {
510		✗	codec_type = AVMEDIA_TYPE_AUDIO;
511		✗	} else if (!strcmp(st_type, "video")) {
512		✗	codec_type = AVMEDIA_TYPE_VIDEO;
513		✗	} else if (!strcmp(st_type, "application")) {
514		✗	codec_type = AVMEDIA_TYPE_DATA;
515		✗	} else if (!strcmp(st_type, "text")) {
516		✗	codec_type = AVMEDIA_TYPE_SUBTITLE;
517			}
518		✗	if (codec_type == AVMEDIA_TYPE_UNKNOWN ||
519		✗	!(rt->media_type_mask & (1 << codec_type)) ||
520		✗	rt->nb_rtsp_streams >= s->max_streams
521			) {
522		✗	s1->skip_media = 1;
523		✗	return;
524			}
525		✗	rtsp_st = av_mallocz(sizeof(RTSPStream));
526		✗	if (!rtsp_st)
527		✗	return;
528		✗	rtsp_st->stream_index = -1;
529		✗	dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
530
531		✗	rtsp_st->sdp_ip = s1->default_ip;
532		✗	rtsp_st->sdp_ttl = s1->default_ttl;
533
534		✗	copy_default_source_addrs(s1->default_include_source_addrs,
535			s1->nb_default_include_source_addrs,
536			&rtsp_st->include_source_addrs,
537			&rtsp_st->nb_include_source_addrs);
538		✗	copy_default_source_addrs(s1->default_exclude_source_addrs,
539			s1->nb_default_exclude_source_addrs,
540			&rtsp_st->exclude_source_addrs,
541			&rtsp_st->nb_exclude_source_addrs);
542
543		✗	get_word(buf1, sizeof(buf1), &p); /* port */
544		✗	rtsp_st->sdp_port = atoi(buf1);
545
546		✗	get_word(buf1, sizeof(buf1), &p); /* protocol */
547		✗	if (!strcmp(buf1, "udp"))
548		✗	rt->transport = RTSP_TRANSPORT_RAW;
549		✗	else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
550		✗	rtsp_st->feedback = 1;
551
552			/* XXX: handle list of formats */
553		✗	get_word(buf1, sizeof(buf1), &p); /* format list */
554		✗	rtsp_st->sdp_payload_type = atoi(buf1);
555
556		✗	if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
557			/* no corresponding stream */
558		✗	if (rt->transport == RTSP_TRANSPORT_RAW) {
559		✗	if (CONFIG_RTPDEC && !rt->ts)
560		✗	rt->ts = avpriv_mpegts_parse_open(s);
561			} else {
562			const RTPDynamicProtocolHandler *handler;
563		✗	handler = ff_rtp_handler_find_by_id(
564			rtsp_st->sdp_payload_type, AVMEDIA_TYPE_DATA);
565		✗	init_rtp_handler(handler, rtsp_st, NULL);
566		✗	finalize_rtp_handler_init(s, rtsp_st, NULL);
567			}
568		✗	} else if (rt->server_type == RTSP_SERVER_WMS &&
569			codec_type == AVMEDIA_TYPE_DATA) {
570			/* RTX stream, a stream that carries all the other actual
571			* audio/video streams. Don't expose this to the callers. */
572			} else {
573		✗	st = avformat_new_stream(s, NULL);
574		✗	if (!st)
575		✗	return;
576		✗	st->id = rt->nb_rtsp_streams - 1;
577		✗	rtsp_st->stream_index = st->index;
578		✗	st->codecpar->codec_type = codec_type;
579		✗	if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
580			const RTPDynamicProtocolHandler *handler;
581			/* if standard payload type, we can find the codec right now */
582		✗	ff_rtp_get_codec_info(st->codecpar, rtsp_st->sdp_payload_type);
583		✗	if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
584		✗	st->codecpar->sample_rate > 0)
585		✗	avpriv_set_pts_info(st, 32, 1, st->codecpar->sample_rate);
586			/* Even static payload types may need a custom depacketizer */
587		✗	handler = ff_rtp_handler_find_by_id(
588		✗	rtsp_st->sdp_payload_type, st->codecpar->codec_type);
589		✗	init_rtp_handler(handler, rtsp_st, st);
590		✗	finalize_rtp_handler_init(s, rtsp_st, st);
591			}
592		✗	if (rt->default_lang[0])
593		✗	av_dict_set(&st->metadata, "language", rt->default_lang, 0);
594			}
595			/* put a default control url */
596		✗	av_strlcpy(rtsp_st->control_url, rt->control_uri,
597			sizeof(rtsp_st->control_url));
598		✗	break;
599		✗	case 'a':
600		✗	if (av_strstart(p, "control:", &p)) {
601		✗	if (rt->nb_rtsp_streams == 0) {
602		✗	if (!strncmp(p, "rtsp://", 7))
603		✗	av_strlcpy(rt->control_uri, p,
604			sizeof(rt->control_uri));
605			} else {
606			char proto[32];
607			/* get the control url */
608		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
609
610			/* XXX: may need to add full url resolution */
611		✗	av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
612			NULL, NULL, 0, p);
613		✗	if (proto[0] == '\0') {
614			/* relative control URL */
615		✗	if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
616		✗	av_strlcat(rtsp_st->control_url, "/",
617			sizeof(rtsp_st->control_url));
618		✗	av_strlcat(rtsp_st->control_url, p,
619			sizeof(rtsp_st->control_url));
620			} else
621		✗	av_strlcpy(rtsp_st->control_url, p,
622			sizeof(rtsp_st->control_url));
623			}
624		✗	} else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
625			/* NOTE: rtpmap is only supported AFTER the 'm=' tag */
626		✗	get_word(buf1, sizeof(buf1), &p);
627		✗	payload_type = atoi(buf1);
628		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
629		✗	if (rtsp_st->stream_index >= 0) {
630		✗	st = s->streams[rtsp_st->stream_index];
631		✗	sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
632			}
633		✗	s1->seen_rtpmap = 1;
634		✗	if (s1->seen_fmtp) {
635		✗	parse_fmtp(s, rt, payload_type, s1->delayed_fmtp);
636			}
637		✗	} else if (av_strstart(p, "fmtp:", &p) ||
638		✗	av_strstart(p, "framesize:", &p)) {
639			// let dynamic protocol handlers have a stab at the line.
640		✗	get_word(buf1, sizeof(buf1), &p);
641		✗	payload_type = atoi(buf1);
642		✗	if (s1->seen_rtpmap) {
643		✗	parse_fmtp(s, rt, payload_type, buf);
644			} else {
645		✗	s1->seen_fmtp = 1;
646		✗	av_strlcpy(s1->delayed_fmtp, buf, sizeof(s1->delayed_fmtp));
647			}
648		✗	} else if (av_strstart(p, "framerate:", &p) && s->nb_streams > 0) {
649			// RFC 8866
650			double framerate;
651		✗	if (av_sscanf(p, "%lf%c", &framerate, &(char){0}) == 1) {
652		✗	st = s->streams[s->nb_streams - 1];
653		✗	st->avg_frame_rate = av_d2q(framerate, INT_MAX);
654			}
655		✗	} else if (av_strstart(p, "ssrc:", &p) && s->nb_streams > 0) {
656		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
657		✗	get_word(buf1, sizeof(buf1), &p);
658		✗	rtsp_st->ssrc = strtoll(buf1, NULL, 10);
659		✗	} else if (av_strstart(p, "range:", &p)) {
660			int64_t start, end;
661
662			// this is so that seeking on a streamed file can work.
663		✗	rtsp_parse_range_npt(p, &start, &end);
664		✗	s->start_time = start;
665			/* AV_NOPTS_VALUE means live broadcast (and can't seek) */
666		✗	if (end != AV_NOPTS_VALUE)
667		✗	s->duration = end - start;
668		✗	} else if (av_strstart(p, "lang:", &p)) {
669		✗	if (s->nb_streams > 0) {
670		✗	get_word(buf1, sizeof(buf1), &p);
671		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
672		✗	if (rtsp_st->stream_index >= 0) {
673		✗	st = s->streams[rtsp_st->stream_index];
674		✗	av_dict_set(&st->metadata, "language", buf1, 0);
675			}
676			} else
677		✗	get_word(rt->default_lang, sizeof(rt->default_lang), &p);
678		✗	} else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
679		✗	if (atoi(p) == 1)
680		✗	rt->transport = RTSP_TRANSPORT_RDT;
681		✗	} else if (av_strstart(p, "SampleRate:integer;", &p) &&
682		✗	s->nb_streams > 0) {
683		✗	st = s->streams[s->nb_streams - 1];
684		✗	st->codecpar->sample_rate = atoi(p);
685		✗	} else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
686			// RFC 4568
687		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
688		✗	get_word(buf1, sizeof(buf1), &p); // ignore tag
689		✗	get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
690		✗	p += strspn(p, SPACE_CHARS);
691		✗	if (av_strstart(p, "inline:", &p))
692		✗	get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
693		✗	} else if (av_strstart(p, "source-filter:", &p)) {
694		✗	int exclude = 0;
695		✗	get_word(buf1, sizeof(buf1), &p);
696		✗	if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
697		✗	return;
698		✗	exclude = !strcmp(buf1, "excl");
699
700		✗	get_word(buf1, sizeof(buf1), &p);
701		✗	if (strcmp(buf1, "IN") != 0)
702		✗	return;
703		✗	get_word(buf1, sizeof(buf1), &p);
704		✗	if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
705		✗	return;
706			// not checking that the destination address actually matches or is wildcard
707		✗	get_word(buf1, sizeof(buf1), &p);
708
709		✗	while (*p != '\0') {
710		✗	rtsp_src = av_mallocz(sizeof(*rtsp_src));
711		✗	if (!rtsp_src)
712		✗	return;
713		✗	get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
714		✗	if (exclude) {
715		✗	if (s->nb_streams == 0) {
716		✗	dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
717			} else {
718		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
719		✗	dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
720			}
721			} else {
722		✗	if (s->nb_streams == 0) {
723		✗	dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
724			} else {
725		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
726		✗	dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
727			}
728			}
729			}
730			} else {
731		✗	if (rt->server_type == RTSP_SERVER_WMS)
732		✗	ff_wms_parse_sdp_a_line(s, p);
733		✗	if (s->nb_streams > 0) {
734		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
735
736		✗	if (rt->server_type == RTSP_SERVER_REAL)
737		✗	ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
738
739		✗	if (rtsp_st->dynamic_handler &&
740		✗	rtsp_st->dynamic_handler->parse_sdp_a_line)
741		✗	rtsp_st->dynamic_handler->parse_sdp_a_line(s,
742			rtsp_st->stream_index,
743			rtsp_st->dynamic_protocol_context, buf);
744			}
745			}
746		✗	break;
747			}
748			}
749
750		✗	int ff_sdp_parse(AVFormatContext *s, const char *content)
751			{
752			const char *p;
753			int letter, i;
754			char buf[SDP_MAX_SIZE], *q;
755		✗	SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
756
757		✗	s->duration = AV_NOPTS_VALUE;
758
759		✗	p = content;
760			for (;;) {
761		✗	p += strspn(p, SPACE_CHARS);
762		✗	letter = *p;
763		✗	if (letter == '\0')
764		✗	break;
765		✗	p++;
766		✗	if (*p != '=')
767		✗	goto next_line;
768		✗	p++;
769			/* get the content */
770		✗	q = buf;
771		✗	while (*p != '\n' && *p != '\r' && *p != '\0') {
772		✗	if ((q - buf) < sizeof(buf) - 1)
773		✗	*q++ = *p;
774		✗	p++;
775			}
776		✗	*q = '\0';
777		✗	sdp_parse_line(s, s1, letter, buf);
778		✗	next_line:
779		✗	while (*p != '\n' && *p != '\0')
780		✗	p++;
781		✗	if (*p == '\n')
782		✗	p++;
783			}
784
785		✗	for (i = 0; i < s1->nb_default_include_source_addrs; i++)
786		✗	av_freep(&s1->default_include_source_addrs[i]);
787		✗	av_freep(&s1->default_include_source_addrs);
788		✗	for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
789		✗	av_freep(&s1->default_exclude_source_addrs[i]);
790		✗	av_freep(&s1->default_exclude_source_addrs);
791
792		✗	if (s->duration == AV_NOPTS_VALUE)
793		✗	s->ctx_flags |= AVFMTCTX_UNSEEKABLE;
794
795		✗	return 0;
796			}
797			#endif /* CONFIG_RTPDEC */
798
799		✗	void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
800			{
801		✗	RTSPState *rt = s->priv_data;
802			int i;
803
804		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
805		✗	RTSPStream *rtsp_st = rt->rtsp_streams[i];
806		✗	if (!rtsp_st)
807		✗	continue;
808		✗	if (rtsp_st->transport_priv) {
809		✗	if (s->oformat) {
810		✗	AVFormatContext *rtpctx = rtsp_st->transport_priv;
811		✗	av_write_trailer(rtpctx);
812		✗	if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
813		✗	if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
814		✗	ff_rtsp_tcp_write_packet(s, rtsp_st);
815		✗	ffio_free_dyn_buf(&rtpctx->pb);
816			} else {
817		✗	avio_closep(&rtpctx->pb);
818			}
819		✗	avformat_free_context(rtpctx);
820		✗	} else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
821		✗	ff_rdt_parse_close(rtsp_st->transport_priv);
822		✗	else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
823		✗	ff_rtp_parse_close(rtsp_st->transport_priv);
824			}
825		✗	rtsp_st->transport_priv = NULL;
826		✗	ffurl_closep(&rtsp_st->rtp_handle);
827			}
828		✗	}
829
830			/* close and free RTSP streams */
831		✗	void ff_rtsp_close_streams(AVFormatContext *s)
832			{
833		✗	RTSPState *rt = s->priv_data;
834			int i, j;
835			RTSPStream *rtsp_st;
836
837		✗	ff_rtsp_undo_setup(s, 0);
838		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
839		✗	rtsp_st = rt->rtsp_streams[i];
840		✗	if (rtsp_st) {
841		✗	if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
842		✗	if (rtsp_st->dynamic_handler->close)
843		✗	rtsp_st->dynamic_handler->close(
844		✗	rtsp_st->dynamic_protocol_context);
845		✗	av_free(rtsp_st->dynamic_protocol_context);
846			}
847		✗	for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
848		✗	av_freep(&rtsp_st->include_source_addrs[j]);
849		✗	av_freep(&rtsp_st->include_source_addrs);
850		✗	for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
851		✗	av_freep(&rtsp_st->exclude_source_addrs[j]);
852		✗	av_freep(&rtsp_st->exclude_source_addrs);
853
854		✗	av_freep(&rtsp_st);
855			}
856			}
857		✗	av_freep(&rt->rtsp_streams);
858		✗	if (rt->asf_ctx) {
859		✗	avformat_close_input(&rt->asf_ctx);
860			}
861		✗	if (CONFIG_RTPDEC && rt->ts)
862		✗	avpriv_mpegts_parse_close(rt->ts);
863		✗	av_freep(&rt->p);
864		✗	av_freep(&rt->recvbuf);
865		✗	}
866
867		✗	int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
868			{
869		✗	RTSPState *rt = s->priv_data;
870		✗	AVStream *st = NULL;
871		✗	int reordering_queue_size = rt->reordering_queue_size;
872		✗	if (reordering_queue_size < 0) {
873		✗	if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
874		✗	reordering_queue_size = 0;
875			else
876		✗	reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
877			}
878
879			/* open the RTP context */
880		✗	if (rtsp_st->stream_index >= 0)
881		✗	st = s->streams[rtsp_st->stream_index];
882		✗	if (!st)
883		✗	s->ctx_flags |= AVFMTCTX_NOHEADER;
884
885		✗	if (CONFIG_RTSP_MUXER && s->oformat && st) {
886		✗	int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv,
887			s, st, rtsp_st->rtp_handle,
888			rt->pkt_size,
889			rtsp_st->stream_index);
890			/* Ownership of rtp_handle is passed to the rtp mux context */
891		✗	rtsp_st->rtp_handle = NULL;
892		✗	if (ret < 0)
893		✗	return ret;
894		✗	st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
895		✗	} else if (rt->transport == RTSP_TRANSPORT_RAW) {
896		✗	return 0; // Don't need to open any parser here
897		✗	} else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT && st)
898		✗	rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
899		✗	rtsp_st->dynamic_protocol_context,
900			rtsp_st->dynamic_handler);
901			else if (CONFIG_RTPDEC)
902		✗	rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
903			rtsp_st->sdp_payload_type,
904			reordering_queue_size);
905
906		✗	if (!rtsp_st->transport_priv) {
907		✗	return AVERROR(ENOMEM);
908		✗	} else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP &&
909		✗	s->iformat) {
910		✗	RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
911		✗	rtpctx->ssrc = rtsp_st->ssrc;
912		✗	if (rtsp_st->dynamic_handler) {
913		✗	ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
914			rtsp_st->dynamic_protocol_context,
915			rtsp_st->dynamic_handler);
916			}
917		✗	if (rtsp_st->crypto_suite[0])
918		✗	ff_rtp_parse_set_crypto(rtsp_st->transport_priv,
919		✗	rtsp_st->crypto_suite,
920		✗	rtsp_st->crypto_params);
921			}
922
923		✗	return 0;
924			}
925
926			#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
927		✗	static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
928			{
929			const char *q;
930			char *p;
931			int v;
932
933		✗	q = *pp;
934		✗	q += strspn(q, SPACE_CHARS);
935		✗	v = strtol(q, &p, 10);
936		✗	if (*p == '-') {
937		✗	p++;
938		✗	*min_ptr = v;
939		✗	v = strtol(p, &p, 10);
940		✗	*max_ptr = v;
941			} else {
942		✗	*min_ptr = v;
943		✗	*max_ptr = v;
944			}
945		✗	*pp = p;
946		✗	}
947
948			/* XXX: only one transport specification is parsed */
949		✗	static void rtsp_parse_transport(AVFormatContext *s,
950			RTSPMessageHeader *reply, const char *p)
951			{
952			char transport_protocol[16];
953			char profile[16];
954			char lower_transport[16];
955			char parameter[16];
956			RTSPTransportField *th;
957			char buf[256];
958
959		✗	reply->nb_transports = 0;
960
961			for (;;) {
962		✗	p += strspn(p, SPACE_CHARS);
963		✗	if (*p == '\0')
964		✗	break;
965
966		✗	th = &reply->transports[reply->nb_transports];
967
968		✗	get_word_sep(transport_protocol, sizeof(transport_protocol),
969			"/", &p);
970		✗	if (!av_strcasecmp (transport_protocol, "rtp")) {
971		✗	get_word_sep(profile, sizeof(profile), "/;,", &p);
972		✗	lower_transport[0] = '\0';
973			/* rtp/avp/<protocol> */
974		✗	if (*p == '/') {
975		✗	get_word_sep(lower_transport, sizeof(lower_transport),
976			";,", &p);
977			}
978		✗	th->transport = RTSP_TRANSPORT_RTP;
979		✗	} else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
980		✗	!av_strcasecmp (transport_protocol, "x-real-rdt")) {
981			/* x-pn-tng/<protocol> */
982		✗	get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
983		✗	profile[0] = '\0';
984		✗	th->transport = RTSP_TRANSPORT_RDT;
985		✗	} else if (!av_strcasecmp(transport_protocol, "raw")) {
986		✗	get_word_sep(profile, sizeof(profile), "/;,", &p);
987		✗	lower_transport[0] = '\0';
988			/* raw/raw/<protocol> */
989		✗	if (*p == '/') {
990		✗	get_word_sep(lower_transport, sizeof(lower_transport),
991			";,", &p);
992			}
993		✗	th->transport = RTSP_TRANSPORT_RAW;
994			} else {
995		✗	break;
996			}
997		✗	if (!av_strcasecmp(lower_transport, "TCP"))
998		✗	th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
999			else
1000		✗	th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
1001
1002		✗	if (*p == ';')
1003		✗	p++;
1004			/* get each parameter */
1005		✗	while (*p != '\0' && *p != ',') {
1006		✗	get_word_sep(parameter, sizeof(parameter), "=;,", &p);
1007		✗	if (!strcmp(parameter, "port")) {
1008		✗	if (*p == '=') {
1009		✗	p++;
1010		✗	rtsp_parse_range(&th->port_min, &th->port_max, &p);
1011			}
1012		✗	} else if (!strcmp(parameter, "client_port")) {
1013		✗	if (*p == '=') {
1014		✗	p++;
1015		✗	rtsp_parse_range(&th->client_port_min,
1016			&th->client_port_max, &p);
1017			}
1018		✗	} else if (!strcmp(parameter, "server_port")) {
1019		✗	if (*p == '=') {
1020		✗	p++;
1021		✗	rtsp_parse_range(&th->server_port_min,
1022			&th->server_port_max, &p);
1023			}
1024		✗	} else if (!strcmp(parameter, "interleaved")) {
1025		✗	if (*p == '=') {
1026		✗	p++;
1027		✗	rtsp_parse_range(&th->interleaved_min,
1028			&th->interleaved_max, &p);
1029			}
1030		✗	} else if (!strcmp(parameter, "multicast")) {
1031		✗	if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
1032		✗	th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1033		✗	} else if (!strcmp(parameter, "ttl")) {
1034		✗	if (*p == '=') {
1035			char *end;
1036		✗	p++;
1037		✗	th->ttl = strtol(p, &end, 10);
1038		✗	p = end;
1039			}
1040		✗	} else if (!strcmp(parameter, "destination")) {
1041		✗	if (*p == '=') {
1042		✗	p++;
1043		✗	get_word_sep(buf, sizeof(buf), ";,", &p);
1044		✗	get_sockaddr(s, buf, &th->destination);
1045			}
1046		✗	} else if (!strcmp(parameter, "source")) {
1047		✗	if (*p == '=') {
1048		✗	p++;
1049		✗	get_word_sep(buf, sizeof(buf), ";,", &p);
1050		✗	av_strlcpy(th->source, buf, sizeof(th->source));
1051			}
1052		✗	} else if (!strcmp(parameter, "mode")) {
1053		✗	if (*p == '=') {
1054		✗	p++;
1055		✗	get_word_sep(buf, sizeof(buf), ";, ", &p);
1056		✗	if (!av_strcasecmp(buf, "record") ||
1057		✗	!av_strcasecmp(buf, "receive"))
1058		✗	th->mode_record = 1;
1059			}
1060			}
1061
1062		✗	while (*p != ';' && *p != '\0' && *p != ',')
1063		✗	p++;
1064		✗	if (*p == ';')
1065		✗	p++;
1066			}
1067		✗	if (*p == ',')
1068		✗	p++;
1069
1070		✗	reply->nb_transports++;
1071		✗	if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
1072		✗	break;
1073			}
1074		✗	}
1075
1076		✗	static void handle_rtp_info(RTSPState *rt, const char *url,
1077			uint32_t seq, uint32_t rtptime)
1078			{
1079			int i;
1080		✗	if (!rtptime || !url[0])
1081		✗	return;
1082		✗	if (rt->transport != RTSP_TRANSPORT_RTP)
1083		✗	return;
1084		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
1085		✗	RTSPStream *rtsp_st = rt->rtsp_streams[i];
1086		✗	RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1087		✗	if (!rtpctx)
1088		✗	continue;
1089		✗	if (!strcmp(rtsp_st->control_url, url)) {
1090		✗	rtpctx->base_timestamp = rtptime;
1091		✗	break;
1092			}
1093			}
1094			}
1095
1096		✗	static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1097			{
1098		✗	int read = 0;
1099		✗	char key[20], value[MAX_URL_SIZE], url[MAX_URL_SIZE] = "";
1100		✗	uint32_t seq = 0, rtptime = 0;
1101
1102			for (;;) {
1103		✗	p += strspn(p, SPACE_CHARS);
1104		✗	if (!*p)
1105		✗	break;
1106		✗	get_word_sep(key, sizeof(key), "=", &p);
1107		✗	if (*p != '=')
1108		✗	break;
1109		✗	p++;
1110		✗	get_word_sep(value, sizeof(value), ";, ", &p);
1111		✗	read++;
1112		✗	if (!strcmp(key, "url"))
1113		✗	av_strlcpy(url, value, sizeof(url));
1114		✗	else if (!strcmp(key, "seq"))
1115		✗	seq = strtoul(value, NULL, 10);
1116		✗	else if (!strcmp(key, "rtptime"))
1117		✗	rtptime = strtoul(value, NULL, 10);
1118		✗	if (*p == ',') {
1119		✗	handle_rtp_info(rt, url, seq, rtptime);
1120		✗	url[0] = '\0';
1121		✗	seq = rtptime = 0;
1122		✗	read = 0;
1123			}
1124		✗	if (*p)
1125		✗	p++;
1126			}
1127		✗	if (read > 0)
1128		✗	handle_rtp_info(rt, url, seq, rtptime);
1129		✗	}
1130
1131		✗	void ff_rtsp_parse_line(AVFormatContext *s,
1132			RTSPMessageHeader *reply, const char *buf,
1133			RTSPState *rt, const char *method)
1134			{
1135			const char *p;
1136
1137			/* NOTE: we do case independent match for broken servers */
1138		✗	p = buf;
1139		✗	if (av_stristart(p, "Session:", &p)) {
1140			int t;
1141		✗	get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
1142		✗	if (av_stristart(p, ";timeout=", &p) &&
1143		✗	(t = strtol(p, NULL, 10)) > 0) {
1144		✗	reply->timeout = t;
1145			}
1146		✗	} else if (av_stristart(p, "Content-Length:", &p)) {
1147		✗	reply->content_length = strtol(p, NULL, 10);
1148		✗	} else if (av_stristart(p, "Transport:", &p)) {
1149		✗	rtsp_parse_transport(s, reply, p);
1150		✗	} else if (av_stristart(p, "CSeq:", &p)) {
1151		✗	reply->seq = strtol(p, NULL, 10);
1152		✗	} else if (av_stristart(p, "Range:", &p)) {
1153		✗	rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
1154		✗	} else if (av_stristart(p, "RealChallenge1:", &p)) {
1155		✗	p += strspn(p, SPACE_CHARS);
1156		✗	av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
1157		✗	} else if (av_stristart(p, "Server:", &p)) {
1158		✗	p += strspn(p, SPACE_CHARS);
1159		✗	av_strlcpy(reply->server, p, sizeof(reply->server));
1160		✗	} else if (av_stristart(p, "Notice:", &p) ||
1161		✗	av_stristart(p, "X-Notice:", &p)) {
1162		✗	reply->notice = strtol(p, NULL, 10);
1163		✗	} else if (av_stristart(p, "Location:", &p)) {
1164		✗	p += strspn(p, SPACE_CHARS);
1165		✗	av_strlcpy(reply->location, p , sizeof(reply->location));
1166		✗	} else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
1167		✗	p += strspn(p, SPACE_CHARS);
1168		✗	ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
1169		✗	} else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
1170		✗	p += strspn(p, SPACE_CHARS);
1171		✗	ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
1172		✗	} else if (av_stristart(p, "Content-Base:", &p) && rt) {
1173		✗	p += strspn(p, SPACE_CHARS);
1174		✗	if (method && !strcmp(method, "DESCRIBE"))
1175		✗	av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
1176		✗	} else if (av_stristart(p, "RTP-Info:", &p) && rt) {
1177		✗	p += strspn(p, SPACE_CHARS);
1178		✗	if (method && !strcmp(method, "PLAY"))
1179		✗	rtsp_parse_rtp_info(rt, p);
1180		✗	} else if (av_stristart(p, "Public:", &p) && rt) {
1181		✗	if (strstr(p, "GET_PARAMETER") &&
1182		✗	method && !strcmp(method, "OPTIONS"))
1183		✗	rt->get_parameter_supported = 1;
1184		✗	} else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
1185		✗	p += strspn(p, SPACE_CHARS);
1186		✗	rt->accept_dynamic_rate = atoi(p);
1187		✗	} else if (av_stristart(p, "Content-Type:", &p)) {
1188		✗	p += strspn(p, SPACE_CHARS);
1189		✗	av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1190		✗	} else if (av_stristart(p, "com.ses.streamID:", &p)) {
1191		✗	p += strspn(p, SPACE_CHARS);
1192		✗	av_strlcpy(reply->stream_id, p, sizeof(reply->stream_id));
1193			}
1194		✗	}
1195
1196			/* skip a RTP/TCP interleaved packet */
1197		✗	int ff_rtsp_skip_packet(AVFormatContext *s)
1198			{
1199		✗	RTSPState *rt = s->priv_data;
1200			int ret, len, len1;
1201			uint8_t buf[MAX_URL_SIZE];
1202
1203		✗	ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
1204		✗	if (ret != 3)
1205		✗	return ret < 0 ? ret : AVERROR(EIO);
1206		✗	len = AV_RB16(buf + 1);
1207
1208		✗	av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
1209
1210			/* skip payload */
1211		✗	while (len > 0) {
1212		✗	len1 = len;
1213		✗	if (len1 > sizeof(buf))
1214		✗	len1 = sizeof(buf);
1215		✗	ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
1216		✗	if (ret != len1)
1217		✗	return ret < 0 ? ret : AVERROR(EIO);
1218		✗	len -= len1;
1219			}
1220
1221		✗	return 0;
1222			}
1223
1224		✗	int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
1225			unsigned char **content_ptr,
1226			int return_on_interleaved_data, const char *method)
1227			{
1228		✗	RTSPState *rt = s->priv_data;
1229			char buf[MAX_URL_SIZE], buf1[MAX_URL_SIZE], *q;
1230			unsigned char ch;
1231			const char *p;
1232			int ret, content_length, line_count, request;
1233			unsigned char *content;
1234
1235		✗	start:
1236		✗	line_count = 0;
1237		✗	request = 0;
1238		✗	content = NULL;
1239		✗	memset(reply, 0, sizeof(*reply));
1240
1241			/* parse reply (XXX: use buffers) */
1242		✗	rt->last_reply[0] = '\0';
1243			for (;;) {
1244		✗	q = buf;
1245			for (;;) {
1246		✗	ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
1247		✗	if (ret != 1) {
1248		✗	ret = (ret < 0) ? ret : AVERROR(EIO);
1249		✗	av_log(s, AV_LOG_WARNING, "Failed reading RTSP data: %s\n", av_err2str(ret));
1250		✗	return ret;
1251			}
1252		✗	av_log(s, AV_LOG_TRACE, "ret=%d c=%02x [%c]\n", ret, ch, ch);
1253		✗	if (ch == '\n')
1254		✗	break;
1255		✗	if (ch == '$' && q == buf) {
1256		✗	if (return_on_interleaved_data) {
1257		✗	return 1;
1258			} else {
1259		✗	ret = ff_rtsp_skip_packet(s);
1260		✗	if (ret < 0)
1261		✗	return ret;
1262			}
1263		✗	} else if (ch != '\r') {
1264		✗	if ((q - buf) < sizeof(buf) - 1)
1265		✗	*q++ = ch;
1266			}
1267			}
1268		✗	*q = '\0';
1269
1270		✗	av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
1271
1272			/* test if last line */
1273		✗	if (buf[0] == '\0')
1274		✗	break;
1275		✗	p = buf;
1276		✗	if (line_count == 0) {
1277			/* get reply code */
1278		✗	get_word(buf1, sizeof(buf1), &p);
1279		✗	if (!strncmp(buf1, "RTSP/", 5)) {
1280		✗	get_word(buf1, sizeof(buf1), &p);
1281		✗	reply->status_code = atoi(buf1);
1282		✗	p += strspn(p, SPACE_CHARS);
1283		✗	av_strlcpy(reply->reason, p, sizeof(reply->reason));
1284			} else {
1285		✗	av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1286		✗	get_word(buf1, sizeof(buf1), &p); // object
1287		✗	request = 1;
1288			}
1289			} else {
1290		✗	ff_rtsp_parse_line(s, reply, p, rt, method);
1291		✗	av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1292		✗	av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1293			}
1294		✗	line_count++;
1295			}
1296
1297		✗	if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
1298		✗	av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
1299
1300		✗	content_length = reply->content_length;
1301		✗	if (content_length > 0) {
1302			/* leave some room for a trailing '\0' (useful for simple parsing) */
1303		✗	content = av_malloc(content_length + 1);
1304		✗	if (!content)
1305		✗	return AVERROR(ENOMEM);
1306		✗	if ((ret = ffurl_read_complete(rt->rtsp_hd, content, content_length)) != content_length) {
1307		✗	av_freep(&content);
1308		✗	return ret < 0 ? ret : AVERROR(EIO);
1309			}
1310		✗	content[content_length] = '\0';
1311			}
1312		✗	if (content_ptr)
1313		✗	*content_ptr = content;
1314			else
1315		✗	av_freep(&content);
1316
1317		✗	if (request) {
1318			char buf[MAX_URL_SIZE];
1319			char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1320		✗	const char* ptr = buf;
1321
1322		✗	if (!strcmp(reply->reason, "OPTIONS") ||
1323		✗	!strcmp(reply->reason, "GET_PARAMETER")) {
1324		✗	snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1325		✗	if (reply->seq)
1326		✗	av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1327		✗	if (reply->session_id[0])
1328		✗	av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1329		✗	reply->session_id);
1330			} else {
1331		✗	snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1332			}
1333		✗	av_strlcat(buf, "\r\n", sizeof(buf));
1334
1335		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1336		✗	av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1337		✗	ptr = base64buf;
1338			}
1339		✗	ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1340
1341		✗	rt->last_cmd_time = av_gettime_relative();
1342			/* Even if the request from the server had data, it is not the data
1343			* that the caller wants or expects. The memory could also be leaked
1344			* if the actual following reply has content data. */
1345		✗	if (content_ptr)
1346		✗	av_freep(content_ptr);
1347			/* If method is set, this is called from ff_rtsp_send_cmd,
1348			* where a reply to exactly this request is awaited. For
1349			* callers from within packet receiving, we just want to
1350			* return to the caller and go back to receiving packets. */
1351		✗	if (method)
1352		✗	goto start;
1353		✗	return 0;
1354			}
1355
1356		✗	if (rt->seq != reply->seq) {
1357		✗	av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1358			rt->seq, reply->seq);
1359			}
1360
1361			/* EOS */
1362		✗	if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1363		✗	reply->notice == 2104 /* Start-of-Stream Reached */ ||
1364		✗	reply->notice == 2306 /* Continuous Feed Terminated */) {
1365		✗	rt->state = RTSP_STATE_IDLE;
1366		✗	} else if (reply->notice >= 4400 && reply->notice < 5500) {
1367		✗	return AVERROR(EIO); /* data or server error */
1368		✗	} else if (reply->notice == 2401 /* Ticket Expired */ ||
1369		✗	(reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1370		✗	return AVERROR(EPERM);
1371
1372		✗	return 0;
1373			}
1374
1375			/**
1376			* Send a command to the RTSP server without waiting for the reply.
1377			*
1378			* @param s RTSP (de)muxer context
1379			* @param method the method for the request
1380			* @param url the target url for the request
1381			* @param headers extra header lines to include in the request
1382			* @param send_content if non-null, the data to send as request body content
1383			* @param send_content_length the length of the send_content data, or 0 if
1384			* send_content is null
1385			*
1386			* @return zero if success, nonzero otherwise
1387			*/
1388		✗	static int rtsp_send_cmd_with_content_async(AVFormatContext *s,
1389			const char *method, const char *url,
1390			const char *headers,
1391			const unsigned char *send_content,
1392			int send_content_length)
1393			{
1394		✗	RTSPState *rt = s->priv_data;
1395			char buf[MAX_URL_SIZE], *out_buf;
1396			char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1397
1398		✗	if (!rt->rtsp_hd_out)
1399		✗	return AVERROR(ENOTCONN);
1400
1401			/* Add in RTSP headers */
1402		✗	out_buf = buf;
1403		✗	rt->seq++;
1404		✗	snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1405		✗	if (headers)
1406		✗	av_strlcat(buf, headers, sizeof(buf));
1407		✗	av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
1408		✗	av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", rt->user_agent);
1409		✗	if (rt->session_id[0] != '\0' && (!headers ||
1410		✗	!strstr(headers, "\nIf-Match:"))) {
1411		✗	av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
1412			}
1413		✗	if (rt->auth[0]) {
1414		✗	char *str = ff_http_auth_create_response(&rt->auth_state,
1415		✗	rt->auth, url, method);
1416		✗	if (str)
1417		✗	av_strlcat(buf, str, sizeof(buf));
1418		✗	av_free(str);
1419			}
1420		✗	if (send_content_length > 0 && send_content)
1421		✗	av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
1422		✗	av_strlcat(buf, "\r\n", sizeof(buf));
1423
1424			/* base64 encode rtsp if tunneling */
1425		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1426		✗	av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1427		✗	out_buf = base64buf;
1428			}
1429
1430		✗	av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
1431
1432		✗	ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
1433		✗	if (send_content_length > 0 && send_content) {
1434		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1435		✗	avpriv_report_missing_feature(s, "Tunneling of RTSP requests with content data");
1436		✗	return AVERROR_PATCHWELCOME;
1437			}
1438		✗	ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
1439			}
1440		✗	rt->last_cmd_time = av_gettime_relative();
1441
1442		✗	return 0;
1443			}
1444
1445		✗	int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
1446			const char *url, const char *headers)
1447			{
1448		✗	return rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
1449			}
1450
1451		✗	int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
1452			const char *headers, RTSPMessageHeader *reply,
1453			unsigned char **content_ptr)
1454			{
1455		✗	return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
1456			content_ptr, NULL, 0);
1457			}
1458
1459		✗	int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
1460			const char *method, const char *url,
1461			const char *header,
1462			RTSPMessageHeader *reply,
1463			unsigned char **content_ptr,
1464			const unsigned char *send_content,
1465			int send_content_length)
1466			{
1467		✗	RTSPState *rt = s->priv_data;
1468			HTTPAuthType cur_auth_type;
1469		✗	int ret, attempts = 0;
1470
1471		✗	retry:
1472		✗	cur_auth_type = rt->auth_state.auth_type;
1473		✗	if ((ret = rtsp_send_cmd_with_content_async(s, method, url, header,
1474			send_content,
1475			send_content_length)) < 0)
1476		✗	return ret;
1477
1478		✗	if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
1479		✗	return ret;
1480		✗	attempts++;
1481
1482		✗	if (reply->status_code == 401 &&
1483		✗	(cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1484		✗	rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
1485		✗	goto retry;
1486
1487		✗	if (reply->status_code > 400){
1488		✗	av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
1489			method,
1490		✗	reply->status_code,
1491		✗	reply->reason);
1492		✗	av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1493			}
1494
1495		✗	return 0;
1496			}
1497
1498		✗	int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
1499			int lower_transport, const char *real_challenge)
1500			{
1501		✗	RTSPState *rt = s->priv_data;
1502		✗	int rtx = 0, j, i, err, interleave = 0, port_off = 0;
1503			RTSPStream *rtsp_st;
1504		✗	RTSPMessageHeader reply1, *reply = &reply1;
1505			char cmd[MAX_URL_SIZE];
1506			const char *trans_pref;
1507
1508		✗	memset(&reply1, 0, sizeof(reply1));
1509
1510		✗	if (rt->transport == RTSP_TRANSPORT_RDT)
1511		✗	trans_pref = "x-pn-tng";
1512		✗	else if (rt->transport == RTSP_TRANSPORT_RAW)
1513		✗	trans_pref = "RAW/RAW";
1514			else
1515		✗	trans_pref = "RTP/AVP";
1516
1517			/* default timeout: 1 minute */
1518		✗	rt->timeout = 60;
1519
1520			/* Choose a random starting offset within the first half of the
1521			* port range, to allow for a number of ports to try even if the offset
1522			* happens to be at the end of the random range. */
1523		✗	if (rt->rtp_port_max - rt->rtp_port_min >= 4) {
1524		✗	port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1525			/* even random offset */
1526		✗	port_off -= port_off & 0x01;
1527			}
1528
1529		✗	for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1530			char transport[MAX_URL_SIZE];
1531
1532			/*
1533			* WMS serves all UDP data over a single connection, the RTX, which
1534			* isn't necessarily the first in the SDP but has to be the first
1535			* to be set up, else the second/third SETUP will fail with a 461.
1536			*/
1537		✗	if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1538		✗	rt->server_type == RTSP_SERVER_WMS) {
1539		✗	if (i == 0) {
1540			/* rtx first */
1541		✗	for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1542		✗	int len = strlen(rt->rtsp_streams[rtx]->control_url);
1543		✗	if (len >= 4 &&
1544		✗	!strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1545			"/rtx"))
1546		✗	break;
1547			}
1548		✗	if (rtx == rt->nb_rtsp_streams)
1549		✗	return -1; /* no RTX found */
1550		✗	rtsp_st = rt->rtsp_streams[rtx];
1551			} else
1552		✗	rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1553			} else
1554		✗	rtsp_st = rt->rtsp_streams[i];
1555
1556			/* RTP/UDP */
1557		✗	if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
1558			char buf[256];
1559
1560		✗	if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1561		✗	port = reply->transports[0].client_port_min;
1562		✗	goto have_port;
1563			}
1564
1565			/* first try in specified port range */
1566		✗	while (j + 1 <= rt->rtp_port_max) {
1567		✗	AVDictionary *opts = map_to_opts(rt);
1568
1569		✗	ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1570			"?localport=%d", j);
1571			/* we will use two ports per rtp stream (rtp and rtcp) */
1572		✗	j += 2;
1573		✗	err = ffurl_open_whitelist(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1574		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
1575
1576		✗	av_dict_free(&opts);
1577
1578		✗	if (!err)
1579		✗	goto rtp_opened;
1580			}
1581		✗	av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1582		✗	err = AVERROR(EIO);
1583		✗	goto fail;
1584
1585		✗	rtp_opened:
1586		✗	port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
1587		✗	have_port:
1588		✗	av_strlcpy(transport, trans_pref, sizeof(transport));
1589		✗	av_strlcat(transport,
1590		✗	rt->server_type == RTSP_SERVER_SATIP ? ";" : "/UDP;",
1591			sizeof(transport));
1592		✗	if (rt->server_type != RTSP_SERVER_REAL)
1593		✗	av_strlcat(transport, "unicast;", sizeof(transport));
1594		✗	av_strlcatf(transport, sizeof(transport),
1595			"client_port=%d", port);
1596		✗	if (rt->transport == RTSP_TRANSPORT_RTP &&
1597		✗	!(rt->server_type == RTSP_SERVER_WMS && i > 0))
1598		✗	av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1599			}
1600
1601			/* RTP/TCP */
1602		✗	else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1603			/* For WMS streams, the application streams are only used for
1604			* UDP. When trying to set it up for TCP streams, the server
1605			* will return an error. Therefore, we skip those streams. */
1606		✗	if (rt->server_type == RTSP_SERVER_WMS &&
1607		✗	(rtsp_st->stream_index < 0 ||
1608		✗	s->streams[rtsp_st->stream_index]->codecpar->codec_type ==
1609			AVMEDIA_TYPE_DATA))
1610		✗	continue;
1611		✗	snprintf(transport, sizeof(transport) - 1,
1612			"%s/TCP;", trans_pref);
1613		✗	if (rt->transport != RTSP_TRANSPORT_RDT)
1614		✗	av_strlcat(transport, "unicast;", sizeof(transport));
1615		✗	av_strlcatf(transport, sizeof(transport),
1616			"interleaved=%d-%d",
1617			interleave, interleave + 1);
1618		✗	interleave += 2;
1619			}
1620
1621		✗	else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
1622		✗	snprintf(transport, sizeof(transport) - 1,
1623			"%s/UDP;multicast", trans_pref);
1624			} else {
1625		✗	err = AVERROR(EINVAL);
1626		✗	goto fail; // transport would be uninitialized
1627			}
1628
1629		✗	if (s->oformat) {
1630		✗	av_strlcat(transport, ";mode=record", sizeof(transport));
1631		✗	} else if (rt->server_type == RTSP_SERVER_REAL ||
1632		✗	rt->server_type == RTSP_SERVER_WMS)
1633		✗	av_strlcat(transport, ";mode=play", sizeof(transport));
1634		✗	snprintf(cmd, sizeof(cmd),
1635			"Transport: %s\r\n",
1636			transport);
1637		✗	if (rt->accept_dynamic_rate)
1638		✗	av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
1639		✗	if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
1640			char real_res[41], real_csum[9];
1641		✗	ff_rdt_calc_response_and_checksum(real_res, real_csum,
1642			real_challenge);
1643		✗	av_strlcatf(cmd, sizeof(cmd),
1644			"If-Match: %s\r\n"
1645			"RealChallenge2: %s, sd=%s\r\n",
1646		✗	rt->session_id, real_res, real_csum);
1647			}
1648		✗	ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
1649		✗	if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1650		✗	err = 1;
1651		✗	goto fail;
1652		✗	} else if (reply->status_code != RTSP_STATUS_OK ||
1653		✗	reply->nb_transports != 1) {
1654		✗	err = ff_rtsp_averror(reply->status_code, AVERROR_INVALIDDATA);
1655		✗	goto fail;
1656			}
1657
1658		✗	if (rt->server_type == RTSP_SERVER_SATIP && reply->stream_id[0]) {
1659			char proto[128], host[128], path[512], auth[128];
1660			int port;
1661		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth), host, sizeof(host),
1662		✗	&port, path, sizeof(path), rt->control_uri);
1663		✗	ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL, host,
1664		✗	port, "/stream=%s", reply->stream_id);
1665			}
1666
1667			/* XXX: same protocol for all streams is required */
1668		✗	if (i > 0) {
1669		✗	if (reply->transports[0].lower_transport != rt->lower_transport ||
1670		✗	reply->transports[0].transport != rt->transport) {
1671		✗	err = AVERROR_INVALIDDATA;
1672		✗	goto fail;
1673			}
1674			} else {
1675		✗	rt->lower_transport = reply->transports[0].lower_transport;
1676		✗	rt->transport = reply->transports[0].transport;
1677			}
1678
1679			/* Fail if the server responded with another lower transport mode
1680			* than what we requested. */
1681		✗	if (reply->transports[0].lower_transport != lower_transport) {
1682		✗	av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1683		✗	err = AVERROR_INVALIDDATA;
1684		✗	goto fail;
1685			}
1686
1687		✗	switch(reply->transports[0].lower_transport) {
1688		✗	case RTSP_LOWER_TRANSPORT_TCP:
1689		✗	rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1690		✗	rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1691		✗	break;
1692
1693		✗	case RTSP_LOWER_TRANSPORT_UDP: {
1694		✗	char url[MAX_URL_SIZE], options[30] = "";
1695		✗	const char *peer = host;
1696
1697		✗	if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
1698		✗	av_strlcpy(options, "?connect=1", sizeof(options));
1699			/* Use source address if specified */
1700		✗	if (reply->transports[0].source[0])
1701		✗	peer = reply->transports[0].source;
1702		✗	ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1703			reply->transports[0].server_port_min, "%s", options);
1704		✗	if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1705		✗	ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1706		✗	err = AVERROR_INVALIDDATA;
1707		✗	goto fail;
1708			}
1709		✗	break;
1710			}
1711		✗	case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1712		✗	char url[MAX_URL_SIZE], namebuf[50], optbuf[20] = "";
1713			struct sockaddr_storage addr;
1714			int port, ttl;
1715		✗	AVDictionary *opts = map_to_opts(rt);
1716
1717		✗	if (reply->transports[0].destination.ss_family) {
1718		✗	addr = reply->transports[0].destination;
1719		✗	port = reply->transports[0].port_min;
1720		✗	ttl = reply->transports[0].ttl;
1721			} else {
1722		✗	addr = rtsp_st->sdp_ip;
1723		✗	port = rtsp_st->sdp_port;
1724		✗	ttl = rtsp_st->sdp_ttl;
1725			}
1726		✗	if (ttl > 0)
1727		✗	snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
1728		✗	getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1729			namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1730		✗	ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
1731			port, "%s", optbuf);
1732		✗	err = ffurl_open_whitelist(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
1733		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
1734		✗	av_dict_free(&opts);
1735
1736		✗	if (err < 0) {
1737		✗	err = AVERROR_INVALIDDATA;
1738		✗	goto fail;
1739			}
1740		✗	break;
1741			}
1742			}
1743
1744		✗	if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
1745		✗	goto fail;
1746			}
1747
1748		✗	if (rt->nb_rtsp_streams && reply->timeout > 0)
1749		✗	rt->timeout = reply->timeout;
1750
1751		✗	if (rt->server_type == RTSP_SERVER_REAL)
1752		✗	rt->need_subscription = 1;
1753
1754		✗	return 0;
1755
1756		✗	fail:
1757		✗	ff_rtsp_undo_setup(s, 0);
1758		✗	return err;
1759			}
1760
1761		✗	void ff_rtsp_close_connections(AVFormatContext *s)
1762			{
1763		✗	RTSPState *rt = s->priv_data;
1764		✗	if (rt->rtsp_hd_out != rt->rtsp_hd)
1765		✗	ffurl_closep(&rt->rtsp_hd_out);
1766		✗	rt->rtsp_hd_out = NULL;
1767		✗	ffurl_closep(&rt->rtsp_hd);
1768		✗	}
1769
1770		✗	int ff_rtsp_connect(AVFormatContext *s)
1771			{
1772		✗	RTSPState *rt = s->priv_data;
1773			char proto[128], host[1024], path[2048];
1774			char tcpname[1024], cmd[MAX_URL_SIZE], auth[128];
1775		✗	const char *lower_rtsp_proto = "tcp";
1776			int port, err, tcp_fd;
1777		✗	RTSPMessageHeader reply1, *reply = &reply1;
1778		✗	int lower_transport_mask = 0;
1779		✗	int default_port = RTSP_DEFAULT_PORT;
1780		✗	int https_tunnel = 0;
1781		✗	char real_challenge[64] = "";
1782			struct sockaddr_storage peer;
1783		✗	socklen_t peer_len = sizeof(peer);
1784
1785		✗	if (rt->rtp_port_max < rt->rtp_port_min) {
1786		✗	av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1787			"than min port %d\n", rt->rtp_port_max,
1788			rt->rtp_port_min);
1789		✗	return AVERROR(EINVAL);
1790			}
1791
1792		✗	if (!ff_network_init())
1793		✗	return AVERROR(EIO);
1794
1795		✗	if (s->max_delay < 0) /* Not set by the caller */
1796		✗	s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
1797
1798		✗	rt->control_transport = RTSP_MODE_PLAIN;
1799		✗	if (rt->lower_transport_mask & ((1 << RTSP_LOWER_TRANSPORT_HTTP) |
1800			(1 << RTSP_LOWER_TRANSPORT_HTTPS))) {
1801		✗	https_tunnel = !!(rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTPS));
1802		✗	rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1803		✗	rt->control_transport = RTSP_MODE_TUNNEL;
1804			}
1805			/* Only pass through valid flags from here */
1806		✗	rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1807
1808		✗	redirect:
1809		✗	memset(&reply1, 0, sizeof(reply1));
1810			/* extract hostname and port */
1811		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth),
1812		✗	host, sizeof(host), &port, path, sizeof(path), s->url);
1813
1814		✗	if (!strcmp(proto, "rtsps")) {
1815		✗	lower_rtsp_proto = "tls";
1816		✗	default_port = RTSPS_DEFAULT_PORT;
1817		✗	rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1818		✗	} else if (!strcmp(proto, "satip")) {
1819		✗	av_strlcpy(proto, "rtsp", sizeof(proto));
1820		✗	rt->server_type = RTSP_SERVER_SATIP;
1821			}
1822
1823		✗	if (*auth) {
1824		✗	av_strlcpy(rt->auth, auth, sizeof(rt->auth));
1825			}
1826		✗	if (port < 0)
1827		✗	port = default_port;
1828
1829		✗	lower_transport_mask = rt->lower_transport_mask;
1830
1831		✗	if (!lower_transport_mask)
1832		✗	lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1833
1834		✗	if (s->oformat) {
1835			/* Only UDP or TCP - UDP multicast isn't supported. */
1836		✗	lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1837			(1 << RTSP_LOWER_TRANSPORT_TCP);
1838		✗	if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
1839		✗	av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1840			"only UDP and TCP are supported for output.\n");
1841		✗	err = AVERROR(EINVAL);
1842		✗	goto fail;
1843			}
1844			}
1845
1846			/* Construct the URI used in request; this is similar to s->url,
1847			* but with authentication credentials removed and RTSP specific options
1848			* stripped out. */
1849		✗	ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
1850			host, port, "%s", path);
1851
1852		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1853			/* set up initial handshake for tunneling */
1854			char httpname[1024];
1855			char sessioncookie[17];
1856			char headers[1024];
1857		✗	AVDictionary *options = NULL;
1858
1859		✗	av_dict_set_int(&options, "timeout", rt->stimeout, 0);
1860		✗	if (https_tunnel) {
1861		✗	int ret = copy_tls_opts_dict(rt, &options);
1862		✗	if (ret < 0) {
1863		✗	av_dict_free(&options);
1864		✗	err = ret;
1865		✗	goto fail;
1866			}
1867			}
1868
1869		✗	ff_url_join(httpname, sizeof(httpname), https_tunnel ? "https" : "http", auth, host, port, "%s", path);
1870		✗	snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1871			av_get_random_seed(), av_get_random_seed());
1872
1873			/* GET requests */
1874		✗	if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1875		✗	&s->interrupt_callback) < 0) {
1876		✗	av_dict_free(&options);
1877		✗	err = AVERROR(EIO);
1878		✗	goto fail;
1879			}
1880
1881			/* generate GET headers */
1882		✗	snprintf(headers, sizeof(headers),
1883			"x-sessioncookie: %s\r\n"
1884			"Accept: application/x-rtsp-tunnelled\r\n"
1885			"Pragma: no-cache\r\n"
1886			"Cache-Control: no-cache\r\n",
1887			sessioncookie);
1888		✗	av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
1889
1890		✗	if (!rt->rtsp_hd->protocol_whitelist && s->protocol_whitelist) {
1891		✗	rt->rtsp_hd->protocol_whitelist = av_strdup(s->protocol_whitelist);
1892		✗	if (!rt->rtsp_hd->protocol_whitelist) {
1893		✗	av_dict_free(&options);
1894		✗	err = AVERROR(ENOMEM);
1895		✗	goto fail;
1896			}
1897			}
1898
1899			/* complete the connection */
1900		✗	if (ffurl_connect(rt->rtsp_hd, &options)) {
1901		✗	av_dict_free(&options);
1902		✗	err = AVERROR(EIO);
1903		✗	goto fail;
1904			}
1905
1906			/* POST requests */
1907		✗	if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1908		✗	&s->interrupt_callback) < 0 ) {
1909		✗	av_dict_free(&options);
1910		✗	err = AVERROR(EIO);
1911		✗	goto fail;
1912			}
1913
1914			/* generate POST headers */
1915		✗	snprintf(headers, sizeof(headers),
1916			"x-sessioncookie: %s\r\n"
1917			"Content-Type: application/x-rtsp-tunnelled\r\n"
1918			"Pragma: no-cache\r\n"
1919			"Cache-Control: no-cache\r\n"
1920			"Content-Length: 32767\r\n"
1921			"Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1922			sessioncookie);
1923		✗	av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
1924		✗	av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
1925		✗	av_opt_set(rt->rtsp_hd_out->priv_data, "send_expect_100", "0", 0);
1926
1927			/* Initialize the authentication state for the POST session. The HTTP
1928			* protocol implementation doesn't properly handle multi-pass
1929			* authentication for POST requests, since it would require one of
1930			* the following:
1931			* - implementing Expect: 100-continue, which many HTTP servers
1932			* don't support anyway, even less the RTSP servers that do HTTP
1933			* tunneling
1934			* - sending the whole POST data until getting a 401 reply specifying
1935			* what authentication method to use, then resending all that data
1936			* - waiting for potential 401 replies directly after sending the
1937			* POST header (waiting for some unspecified time)
1938			* Therefore, we copy the full auth state, which works for both basic
1939			* and digest. (For digest, we would have to synchronize the nonce
1940			* count variable between the two sessions, if we'd do more requests
1941			* with the original session, though.)
1942			*/
1943		✗	ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1944
1945			/* complete the connection */
1946		✗	if (ffurl_connect(rt->rtsp_hd_out, &options)) {
1947		✗	av_dict_free(&options);
1948		✗	err = AVERROR(EIO);
1949		✗	goto fail;
1950			}
1951		✗	av_dict_free(&options);
1952			} else {
1953			int ret;
1954			/* open the tcp connection */
1955		✗	AVDictionary *proto_opts = NULL;
1956		✗	if (strcmp("tls", lower_rtsp_proto) == 0) {
1957		✗	ret = copy_tls_opts_dict(rt, &proto_opts);
1958		✗	if (ret < 0) {
1959		✗	av_dict_free(&proto_opts);
1960		✗	err = ret;
1961		✗	goto fail;
1962			}
1963			}
1964
1965		✗	ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
1966			host, port,
1967			"?timeout=%"PRId64, rt->stimeout);
1968		✗	if ((ret = ffurl_open_whitelist(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
1969		✗	&s->interrupt_callback, &proto_opts, s->protocol_whitelist, s->protocol_blacklist, NULL)) < 0) {
1970		✗	av_dict_free(&proto_opts);
1971		✗	err = ret;
1972		✗	goto fail;
1973			}
1974		✗	av_dict_free(&proto_opts);
1975		✗	rt->rtsp_hd_out = rt->rtsp_hd;
1976			}
1977		✗	rt->seq = 0;
1978
1979		✗	tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
1980		✗	if (tcp_fd < 0) {
1981		✗	err = tcp_fd;
1982		✗	goto fail;
1983			}
1984		✗	if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1985		✗	getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1986			NULL, 0, NI_NUMERICHOST);
1987			}
1988
1989			/* request options supported by the server; this also detects server
1990			* type */
1991		✗	if (rt->server_type != RTSP_SERVER_SATIP)
1992		✗	rt->server_type = RTSP_SERVER_RTP;
1993			for (;;) {
1994		✗	cmd[0] = 0;
1995		✗	if (rt->server_type == RTSP_SERVER_REAL)
1996		✗	av_strlcat(cmd,
1997			/*
1998			* The following entries are required for proper
1999			* streaming from a Realmedia server. They are
2000			* interdependent in some way although we currently
2001			* don't quite understand how. Values were copied
2002			* from mplayer SVN r23589.
2003			* ClientChallenge is a 16-byte ID in hex
2004			* CompanyID is a 16-byte ID in base64
2005			*/
2006			"ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
2007			"PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
2008			"CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
2009			"GUID: 00000000-0000-0000-0000-000000000000\r\n",
2010			sizeof(cmd));
2011		✗	ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
2012		✗	if (reply->status_code != RTSP_STATUS_OK) {
2013		✗	err = ff_rtsp_averror(reply->status_code, AVERROR_INVALIDDATA);
2014		✗	goto fail;
2015			}
2016
2017			/* detect server type if not standard-compliant RTP */
2018		✗	if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
2019		✗	rt->server_type = RTSP_SERVER_REAL;
2020		✗	continue;
2021		✗	} else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
2022		✗	rt->server_type = RTSP_SERVER_WMS;
2023		✗	} else if (rt->server_type == RTSP_SERVER_REAL)
2024		✗	strcpy(real_challenge, reply->real_challenge);
2025		✗	break;
2026			}
2027
2028			#if CONFIG_RTSP_DEMUXER
2029		✗	if (s->iformat) {
2030		✗	if (rt->server_type == RTSP_SERVER_SATIP)
2031		✗	err = init_satip_stream(s);
2032			else
2033		✗	err = ff_rtsp_setup_input_streams(s, reply);
2034			} else
2035			#endif
2036			if (CONFIG_RTSP_MUXER)
2037		✗	err = ff_rtsp_setup_output_streams(s, host);
2038			else
2039			av_unreachable("Either muxer or demuxer must be enabled");
2040		✗	if (err)
2041		✗	goto fail;
2042
2043			do {
2044		✗	int lower_transport = ff_log2_tab[lower_transport_mask &
2045		✗	~(lower_transport_mask - 1)];
2046
2047		✗	if ((lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_TCP))
2048		✗	&& (rt->rtsp_flags & RTSP_FLAG_PREFER_TCP))
2049		✗	lower_transport = RTSP_LOWER_TRANSPORT_TCP;
2050
2051		✗	err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2052		✗	rt->server_type == RTSP_SERVER_REAL ?
2053			real_challenge : NULL);
2054		✗	if (err < 0)
2055		✗	goto fail;
2056		✗	lower_transport_mask &= ~(1 << lower_transport);
2057		✗	if (lower_transport_mask == 0 && err == 1) {
2058		✗	err = AVERROR(EPROTONOSUPPORT);
2059		✗	goto fail;
2060			}
2061		✗	} while (err);
2062
2063		✗	rt->lower_transport_mask = lower_transport_mask;
2064		✗	av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
2065		✗	rt->state = RTSP_STATE_IDLE;
2066		✗	rt->seek_timestamp = 0; /* default is to start stream at position zero */
2067		✗	return 0;
2068		✗	fail:
2069		✗	ff_rtsp_close_streams(s);
2070		✗	ff_rtsp_close_connections(s);
2071		✗	if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
2072		✗	char *new_url = av_strdup(reply->location);
2073		✗	if (!new_url) {
2074		✗	err = AVERROR(ENOMEM);
2075		✗	goto fail2;
2076			}
2077		✗	ff_format_set_url(s, new_url);
2078		✗	rt->session_id[0] = '\0';
2079		✗	av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
2080		✗	reply->status_code,
2081			s->url);
2082		✗	goto redirect;
2083			}
2084		✗	fail2:
2085		✗	ff_network_close();
2086		✗	return err;
2087			}
2088			#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
2089
2090			#if CONFIG_RTPDEC
2091			#if CONFIG_RTSP_DEMUXER
2092		✗	static int parse_rtsp_message(AVFormatContext *s)
2093			{
2094		✗	RTSPState *rt = s->priv_data;
2095			int ret;
2096
2097		✗	if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
2098		✗	if (rt->state == RTSP_STATE_STREAMING) {
2099		✗	return ff_rtsp_parse_streaming_commands(s);
2100			} else
2101		✗	return AVERROR_EOF;
2102			} else {
2103			RTSPMessageHeader reply;
2104		✗	ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
2105		✗	if (ret < 0)
2106		✗	return ret;
2107			/* XXX: parse message */
2108		✗	if (rt->state != RTSP_STATE_STREAMING)
2109		✗	return 0;
2110			}
2111
2112		✗	return 0;
2113			}
2114			#endif
2115
2116		✗	static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
2117			uint8_t *buf, int buf_size, int64_t wait_end)
2118			{
2119		✗	RTSPState *rt = s->priv_data;
2120			RTSPStream *rtsp_st;
2121			int n, i, ret;
2122		✗	struct pollfd *p = rt->p;
2123		✗	int *fds = NULL, fdsnum, fdsidx;
2124		✗	int64_t runs = rt->stimeout / POLLING_TIME / 1000;
2125
2126		✗	if (!p) {
2127		✗	p = rt->p = av_malloc_array(2 * rt->nb_rtsp_streams + 1, sizeof(*p));
2128		✗	if (!p)
2129		✗	return AVERROR(ENOMEM);
2130
2131		✗	if (rt->rtsp_hd) {
2132		✗	p[rt->max_p].fd = ffurl_get_file_handle(rt->rtsp_hd);
2133		✗	p[rt->max_p++].events = POLLIN;
2134			}
2135		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2136		✗	rtsp_st = rt->rtsp_streams[i];
2137		✗	if (rtsp_st->rtp_handle) {
2138		✗	if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
2139			&fds, &fdsnum)) {
2140		✗	av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
2141		✗	return ret;
2142			}
2143		✗	if (fdsnum != 2) {
2144		✗	av_log(s, AV_LOG_ERROR,
2145			"Number of fds %d not supported\n", fdsnum);
2146		✗	av_freep(&fds);
2147		✗	return AVERROR_INVALIDDATA;
2148			}
2149		✗	for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
2150		✗	p[rt->max_p].fd = fds[fdsidx];
2151		✗	p[rt->max_p++].events = POLLIN;
2152			}
2153		✗	av_freep(&fds);
2154			}
2155			}
2156			}
2157
2158			for (;;) {
2159		✗	if (ff_check_interrupt(&s->interrupt_callback))
2160		✗	return AVERROR_EXIT;
2161		✗	if (wait_end && wait_end - av_gettime_relative() < 0)
2162		✗	return AVERROR(EAGAIN);
2163		✗	n = poll(p, rt->max_p, POLLING_TIME);
2164		✗	if (n > 0) {
2165		✗	int j = rt->rtsp_hd ? 1 : 0;
2166		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2167		✗	rtsp_st = rt->rtsp_streams[i];
2168		✗	if (rtsp_st->rtp_handle) {
2169		✗	if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
2170		✗	ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
2171		✗	if (ret > 0) {
2172		✗	*prtsp_st = rtsp_st;
2173		✗	return ret;
2174			}
2175			}
2176		✗	j+=2;
2177			}
2178			}
2179			#if CONFIG_RTSP_DEMUXER
2180		✗	if (rt->rtsp_hd && p[0].revents & POLLIN) {
2181		✗	if ((ret = parse_rtsp_message(s)) < 0) {
2182		✗	return ret;
2183			}
2184			}
2185			#endif
2186		✗	} else if (n == 0 && rt->stimeout > 0 && --runs <= 0) {
2187		✗	return AVERROR(ETIMEDOUT);
2188		✗	} else if (n < 0 && errno != EINTR)
2189		✗	return AVERROR(errno);
2190			}
2191			}
2192
2193		✗	static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
2194			const uint8_t *buf, int len)
2195			{
2196		✗	RTSPState *rt = s->priv_data;
2197			int i;
2198		✗	if (len < 0)
2199		✗	return len;
2200		✗	if (rt->nb_rtsp_streams == 1) {
2201		✗	*rtsp_st = rt->rtsp_streams[0];
2202		✗	return len;
2203			}
2204		✗	if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2205		✗	if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2206		✗	int no_ssrc = 0;
2207		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2208		✗	RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2209		✗	if (!rtpctx)
2210		✗	continue;
2211		✗	if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2212		✗	*rtsp_st = rt->rtsp_streams[i];
2213		✗	return len;
2214			}
2215		✗	if (!rtpctx->ssrc)
2216		✗	no_ssrc = 1;
2217			}
2218		✗	if (no_ssrc) {
2219		✗	av_log(s, AV_LOG_WARNING,
2220			"Unable to pick stream for packet - SSRC not known for "
2221			"all streams\n");
2222		✗	return AVERROR(EAGAIN);
2223			}
2224			} else {
2225		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2226		✗	if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2227		✗	*rtsp_st = rt->rtsp_streams[i];
2228		✗	return len;
2229			}
2230			}
2231			}
2232			}
2233		✗	av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2234		✗	return AVERROR(EAGAIN);
2235			}
2236
2237		✗	static int read_packet(AVFormatContext *s,
2238			RTSPStream **rtsp_st, RTSPStream *first_queue_st,
2239			int64_t wait_end)
2240			{
2241		✗	RTSPState *rt = s->priv_data;
2242			int len;
2243
2244		✗	switch(rt->lower_transport) {
2245		✗	default:
2246			#if CONFIG_RTSP_DEMUXER
2247			case RTSP_LOWER_TRANSPORT_TCP:
2248		✗	len = ff_rtsp_tcp_read_packet(s, rtsp_st, rt->recvbuf, RECVBUF_SIZE);
2249		✗	break;
2250			#endif
2251		✗	case RTSP_LOWER_TRANSPORT_UDP:
2252			case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
2253		✗	len = udp_read_packet(s, rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2254		✗	if (len > 0 && (*rtsp_st)->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2255		✗	ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, (*rtsp_st)->rtp_handle, NULL, len);
2256		✗	break;
2257		✗	case RTSP_LOWER_TRANSPORT_CUSTOM:
2258		✗	if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
2259		✗	wait_end && wait_end < av_gettime_relative())
2260		✗	len = AVERROR(EAGAIN);
2261			else
2262		✗	len = avio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
2263		✗	len = pick_stream(s, rtsp_st, rt->recvbuf, len);
2264		✗	if (len > 0 && (*rtsp_st)->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2265		✗	ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, NULL, s->pb, len);
2266		✗	break;
2267			}
2268
2269		✗	if (len == 0)
2270		✗	return AVERROR_EOF;
2271
2272		✗	return len;
2273			}
2274
2275		✗	int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
2276			{
2277		✗	RTSPState *rt = s->priv_data;
2278			int ret, len;
2279		✗	RTSPStream *rtsp_st, *first_queue_st = NULL;
2280		✗	int64_t wait_end = 0;
2281
2282		✗	if (rt->nb_byes == rt->nb_rtsp_streams)
2283		✗	return AVERROR_EOF;
2284
2285			/* get next frames from the same RTP packet */
2286		✗	if (rt->cur_transport_priv) {
2287		✗	if (rt->transport == RTSP_TRANSPORT_RDT) {
2288		✗	ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2289		✗	} else if (rt->transport == RTSP_TRANSPORT_RTP) {
2290		✗	ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2291		✗	} else if (CONFIG_RTPDEC && rt->ts) {
2292		✗	ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2293		✗	if (ret >= 0) {
2294		✗	rt->recvbuf_pos += ret;
2295		✗	ret = rt->recvbuf_pos < rt->recvbuf_len;
2296			}
2297			} else
2298		✗	ret = -1;
2299		✗	if (ret == 0) {
2300		✗	rt->cur_transport_priv = NULL;
2301		✗	return 0;
2302		✗	} else if (ret == 1) {
2303		✗	return 0;
2304			} else
2305		✗	rt->cur_transport_priv = NULL;
2306			}
2307
2308		✗	redo:
2309		✗	if (rt->transport == RTSP_TRANSPORT_RTP) {
2310			int i;
2311		✗	int64_t first_queue_time = 0;
2312		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2313		✗	RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2314			int64_t queue_time;
2315		✗	if (!rtpctx)
2316		✗	continue;
2317		✗	queue_time = ff_rtp_queued_packet_time(rtpctx);
2318		✗	if (queue_time && (queue_time - first_queue_time < 0 ||
2319			!first_queue_time)) {
2320		✗	first_queue_time = queue_time;
2321		✗	first_queue_st = rt->rtsp_streams[i];
2322			}
2323			}
2324		✗	if (first_queue_time) {
2325		✗	wait_end = first_queue_time + s->max_delay;
2326			} else {
2327		✗	wait_end = 0;
2328		✗	first_queue_st = NULL;
2329			}
2330			}
2331
2332			/* read next RTP packet */
2333		✗	if (!rt->recvbuf) {
2334		✗	rt->recvbuf = av_malloc(RECVBUF_SIZE);
2335		✗	if (!rt->recvbuf)
2336		✗	return AVERROR(ENOMEM);
2337			}
2338
2339		✗	len = read_packet(s, &rtsp_st, first_queue_st, wait_end);
2340		✗	if (len == AVERROR(EAGAIN) && first_queue_st &&
2341		✗	rt->transport == RTSP_TRANSPORT_RTP) {
2342		✗	av_log(s, AV_LOG_WARNING,
2343			"max delay reached. need to consume packet\n");
2344		✗	rtsp_st = first_queue_st;
2345		✗	ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
2346		✗	goto end;
2347			}
2348		✗	if (len < 0)
2349		✗	return len;
2350
2351		✗	if (rt->transport == RTSP_TRANSPORT_RDT) {
2352		✗	ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2353		✗	} else if (rt->transport == RTSP_TRANSPORT_RTP) {
2354		✗	ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2355		✗	if (rtsp_st->feedback) {
2356		✗	AVIOContext *pb = NULL;
2357		✗	if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
2358		✗	pb = s->pb;
2359		✗	ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2360			}
2361		✗	if (ret < 0) {
2362			/* Either bad packet, or a RTCP packet. Check if the
2363			* first_rtcp_ntp_time field was initialized. */
2364		✗	RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2365		✗	if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2366			/* first_rtcp_ntp_time has been initialized for this stream,
2367			* copy the same value to all other uninitialized streams,
2368			* in order to map their timestamp origin to the same ntp time
2369			* as this one. */
2370			int i;
2371		✗	AVStream *st = NULL;
2372		✗	if (rtsp_st->stream_index >= 0)
2373		✗	st = s->streams[rtsp_st->stream_index];
2374		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2375		✗	RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2376		✗	AVStream *st2 = NULL;
2377		✗	if (rt->rtsp_streams[i]->stream_index >= 0)
2378		✗	st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2379		✗	if (rtpctx2 && st && st2 &&
2380		✗	rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2381		✗	rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
2382		✗	rtpctx2->rtcp_ts_offset = av_rescale_q(
2383			rtpctx->rtcp_ts_offset, st->time_base,
2384			st2->time_base);
2385			}
2386			}
2387			// Make real NTP start time available in AVFormatContext
2388		✗	if (s->start_time_realtime == AV_NOPTS_VALUE) {
2389		✗	s->start_time_realtime = ff_parse_ntp_time(rtpctx->first_rtcp_ntp_time) - NTP_OFFSET_US;
2390		✗	if (rtpctx->st) {
2391		✗	s->start_time_realtime -=
2392		✗	av_rescale_q (rtpctx->rtcp_ts_offset, rtpctx->st->time_base, AV_TIME_BASE_Q);
2393			}
2394			}
2395			}
2396		✗	if (ret == -RTCP_BYE) {
2397		✗	rt->nb_byes++;
2398
2399		✗	av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2400		✗	rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2401
2402		✗	if (rt->nb_byes == rt->nb_rtsp_streams)
2403		✗	return AVERROR_EOF;
2404			}
2405			}
2406		✗	} else if (CONFIG_RTPDEC && rt->ts) {
2407		✗	ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2408		✗	if (ret >= 0) {
2409		✗	if (ret < len) {
2410		✗	rt->recvbuf_len = len;
2411		✗	rt->recvbuf_pos = ret;
2412		✗	rt->cur_transport_priv = rt->ts;
2413		✗	return 1;
2414			} else {
2415		✗	ret = 0;
2416			}
2417			}
2418			} else {
2419		✗	return AVERROR_INVALIDDATA;
2420			}
2421		✗	end:
2422		✗	if (ret < 0)
2423		✗	goto redo;
2424		✗	if (ret == 1)
2425			/* more packets may follow, so we save the RTP context */
2426		✗	rt->cur_transport_priv = rtsp_st->transport_priv;
2427
2428		✗	return ret;
2429			}
2430			#endif /* CONFIG_RTPDEC */
2431
2432			#if CONFIG_SDP_DEMUXER
2433		7282	static int sdp_probe(const AVProbeData *p1)
2434			{
2435		7282	const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
2436
2437			/* we look for a line beginning "c=IN IP" */
2438	3/4 ✓ Branch 0 taken 572685 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 568587 times. ✓ Branch 3 taken 4098 times.	572685	while (p < p_end && *p != '\0') {
2439	3/4 ✓ Branch 0 taken 568453 times. ✓ Branch 1 taken 134 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 568453 times.	1137040	if (sizeof("c=IN IP") - 1 < p_end - p &&
2440		568453	av_strstart(p, "c=IN IP", NULL))
2441		✗	return AVPROBE_SCORE_EXTENSION;
2442
2443	4/4 ✓ Branch 0 taken 92723290 times. ✓ Branch 1 taken 3184 times. ✓ Branch 2 taken 92157887 times. ✓ Branch 3 taken 565403 times.	92726474	while (p < p_end - 1 && *p != '\n') p++;
2444	2/2 ✓ Branch 0 taken 3184 times. ✓ Branch 1 taken 565403 times.	568587	if (++p >= p_end)
2445		3184	break;
2446	2/2 ✓ Branch 0 taken 3370 times. ✓ Branch 1 taken 562033 times.	565403	if (*p == '\r')
2447		3370	p++;
2448			}
2449		7282	return 0;
2450			}
2451
2452		✗	static void append_source_addrs(char *buf, int size, const char *name,
2453			int count, struct RTSPSource **addrs)
2454			{
2455			int i;
2456		✗	if (!count)
2457		✗	return;
2458		✗	av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2459		✗	for (i = 1; i < count; i++)
2460		✗	av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2461			}
2462
2463		✗	static int sdp_read_header(AVFormatContext *s)
2464			{
2465		✗	RTSPState *rt = s->priv_data;
2466			RTSPStream *rtsp_st;
2467			int i, err;
2468			char url[MAX_URL_SIZE];
2469			AVBPrint bp;
2470
2471		✗	if (!ff_network_init())
2472		✗	return AVERROR(EIO);
2473
2474		✗	if (s->max_delay < 0) /* Not set by the caller */
2475		✗	s->max_delay = DEFAULT_REORDERING_DELAY;
2476		✗	if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2477		✗	rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
2478
2479			/* read the whole sdp file */
2480		✗	av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
2481		✗	err = avio_read_to_bprint(s->pb, &bp, INT_MAX);
2482		✗	if (err < 0 ) {
2483		✗	ff_network_close();
2484		✗	av_bprint_finalize(&bp, NULL);
2485		✗	return err;
2486			}
2487		✗	err = ff_sdp_parse(s, bp.str);
2488		✗	av_bprint_finalize(&bp, NULL);
2489		✗	if (err) goto fail;
2490
2491			/* open each RTP stream */
2492		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2493			char namebuf[50];
2494		✗	rtsp_st = rt->rtsp_streams[i];
2495
2496		✗	if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2497		✗	AVDictionary *opts = map_to_opts(rt);
2498			char buf[MAX_URL_SIZE];
2499			const char *p;
2500
2501		✗	err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2502			sizeof(rtsp_st->sdp_ip),
2503			namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2504		✗	if (err) {
2505		✗	av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2506		✗	err = AVERROR(EIO);
2507		✗	av_dict_free(&opts);
2508		✗	goto fail;
2509			}
2510		✗	ff_url_join(url, sizeof(url), "rtp", NULL,
2511			namebuf, rtsp_st->sdp_port,
2512			"?localport=%d&ttl=%d&connect=%d&write_to_source=%d",
2513			rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2514		✗	rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2515		✗	rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
2516
2517		✗	p = strchr(s->url, '?');
2518		✗	if (p && av_find_info_tag(buf, sizeof(buf), "localaddr", p))
2519		✗	av_strlcatf(url, sizeof(url), "&localaddr=%s", buf);
2520		✗	else if (rt->localaddr && rt->localaddr[0])
2521		✗	av_strlcatf(url, sizeof(url), "&localaddr=%s", rt->localaddr);
2522		✗	append_source_addrs(url, sizeof(url), "sources",
2523			rtsp_st->nb_include_source_addrs,
2524			rtsp_st->include_source_addrs);
2525		✗	append_source_addrs(url, sizeof(url), "block",
2526			rtsp_st->nb_exclude_source_addrs,
2527			rtsp_st->exclude_source_addrs);
2528		✗	err = ffurl_open_whitelist(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ,
2529		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
2530
2531		✗	av_dict_free(&opts);
2532
2533		✗	if (err < 0) {
2534		✗	err = AVERROR_INVALIDDATA;
2535		✗	goto fail;
2536			}
2537			}
2538		✗	if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
2539		✗	goto fail;
2540			}
2541		✗	return 0;
2542		✗	fail:
2543		✗	ff_rtsp_close_streams(s);
2544		✗	ff_network_close();
2545		✗	return err;
2546			}
2547
2548		✗	static int sdp_read_close(AVFormatContext *s)
2549			{
2550		✗	ff_rtsp_close_streams(s);
2551		✗	ff_network_close();
2552		✗	return 0;
2553			}
2554
2555			static const AVClass sdp_demuxer_class = {
2556			.class_name = "SDP demuxer",
2557			.item_name = av_default_item_name,
2558			.option = sdp_options,
2559			.version = LIBAVUTIL_VERSION_INT,
2560			};
2561
2562			const FFInputFormat ff_sdp_demuxer = {
2563			.p.name = "sdp",
2564			.p.long_name = NULL_IF_CONFIG_SMALL("SDP"),
2565			.p.priv_class = &sdp_demuxer_class,
2566			.priv_data_size = sizeof(RTSPState),
2567			.read_probe = sdp_probe,
2568			.read_header = sdp_read_header,
2569			.read_packet = ff_rtsp_fetch_packet,
2570			.read_close = sdp_read_close,
2571			};
2572			#endif /* CONFIG_SDP_DEMUXER */
2573
2574			#if CONFIG_RTP_DEMUXER
2575		3911	static int rtp_probe(const AVProbeData *p)
2576			{
2577	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3911 times.	3911	if (av_strstart(p->filename, "rtp:", NULL))
2578		✗	return AVPROBE_SCORE_MAX;
2579		3911	return 0;
2580			}
2581
2582		✗	static int rtp_read_header(AVFormatContext *s)
2583			{
2584			uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
2585			char host[500], filters_buf[1000];
2586			int ret, port;
2587		✗	URLContext* in = NULL;
2588			int payload_type;
2589		✗	AVCodecParameters *par = NULL;
2590			struct sockaddr_storage addr;
2591			FFIOContext pb;
2592		✗	socklen_t addrlen = sizeof(addr);
2593		✗	RTSPState *rt = s->priv_data;
2594			const char *p;
2595			AVBPrint sdp;
2596		✗	AVDictionary *opts = NULL;
2597
2598		✗	if (!ff_network_init())
2599		✗	return AVERROR(EIO);
2600
2601		✗	opts = map_to_opts(rt);
2602		✗	ret = ffurl_open_whitelist(&in, s->url, AVIO_FLAG_READ,
2603		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
2604		✗	av_dict_free(&opts);
2605		✗	if (ret)
2606		✗	goto fail;
2607
2608			while (1) {
2609		✗	ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
2610		✗	if (ret == AVERROR(EAGAIN))
2611		✗	continue;
2612		✗	if (ret < 0)
2613		✗	goto fail;
2614		✗	if (ret < 12) {
2615		✗	av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2616		✗	continue;
2617			}
2618
2619		✗	if ((recvbuf[0] & 0xc0) != 0x80) {
2620		✗	av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2621			"received\n");
2622		✗	continue;
2623			}
2624
2625		✗	if (RTP_PT_IS_RTCP(recvbuf[1]))
2626		✗	continue;
2627
2628		✗	payload_type = recvbuf[1] & 0x7f;
2629		✗	break;
2630			}
2631		✗	getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
2632		✗	ffurl_closep(&in);
2633
2634		✗	par = avcodec_parameters_alloc();
2635		✗	if (!par) {
2636		✗	ret = AVERROR(ENOMEM);
2637		✗	goto fail;
2638			}
2639
2640		✗	if (ff_rtp_get_codec_info(par, payload_type)) {
2641		✗	av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2642			"without an SDP file describing it\n",
2643			payload_type);
2644		✗	ret = AVERROR_INVALIDDATA;
2645		✗	goto fail;
2646			}
2647		✗	if (par->codec_type != AVMEDIA_TYPE_DATA) {
2648		✗	av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2649			"properly you need an SDP file "
2650			"describing it\n");
2651			}
2652
2653		✗	av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2654		✗	NULL, 0, s->url);
2655
2656		✗	av_bprint_init(&sdp, 0, AV_BPRINT_SIZE_UNLIMITED);
2657		✗	av_bprintf(&sdp, "v=0\r\nc=IN IP%d %s\r\n",
2658		✗	addr.ss_family == AF_INET ? 4 : 6, host);
2659
2660		✗	p = strchr(s->url, '?');
2661		✗	if (p) {
2662			static const char filters[][2][8] = { { "sources", "incl" },
2663			{ "block", "excl" } };
2664			int i;
2665			char *q;
2666		✗	for (i = 0; i < FF_ARRAY_ELEMS(filters); i++) {
2667		✗	if (av_find_info_tag(filters_buf, sizeof(filters_buf), filters[i][0], p)) {
2668		✗	q = filters_buf;
2669		✗	while ((q = strchr(q, ',')) != NULL)
2670		✗	*q = ' ';
2671		✗	av_bprintf(&sdp, "a=source-filter:%s IN IP%d %s %s\r\n",
2672		✗	filters[i][1],
2673		✗	addr.ss_family == AF_INET ? 4 : 6, host,
2674			filters_buf);
2675			}
2676			}
2677			}
2678
2679		✗	av_bprintf(&sdp, "m=%s %d RTP/AVP %d\r\n",
2680		✗	par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
2681		✗	par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2682			port, payload_type);
2683		✗	av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp.str);
2684		✗	if (!av_bprint_is_complete(&sdp))
2685		✗	goto fail_nobuf;
2686		✗	avcodec_parameters_free(&par);
2687
2688		✗	ffio_init_read_context(&pb, sdp.str, sdp.len);
2689		✗	s->pb = &pb.pub;
2690
2691			/* if sdp_read_header() fails then following ff_network_close() cancels out */
2692			/* ff_network_init() at the start of this function. Otherwise it cancels out */
2693			/* ff_network_init() inside sdp_read_header() */
2694		✗	ff_network_close();
2695
2696		✗	rt->media_type_mask = (1 << (AVMEDIA_TYPE_SUBTITLE+1)) - 1;
2697
2698		✗	ret = sdp_read_header(s);
2699		✗	s->pb = NULL;
2700		✗	av_bprint_finalize(&sdp, NULL);
2701		✗	return ret;
2702
2703		✗	fail_nobuf:
2704		✗	ret = AVERROR(ENOMEM);
2705		✗	av_log(s, AV_LOG_ERROR, "rtp_read_header(): not enough buffer space for sdp-headers\n");
2706		✗	av_bprint_finalize(&sdp, NULL);
2707		✗	fail:
2708		✗	avcodec_parameters_free(&par);
2709		✗	ffurl_closep(&in);
2710		✗	ff_network_close();
2711		✗	return ret;
2712			}
2713
2714			static const AVClass rtp_demuxer_class = {
2715			.class_name = "RTP demuxer",
2716			.item_name = av_default_item_name,
2717			.option = rtp_options,
2718			.version = LIBAVUTIL_VERSION_INT,
2719			};
2720
2721			const FFInputFormat ff_rtp_demuxer = {
2722			.p.name = "rtp",
2723			.p.long_name = NULL_IF_CONFIG_SMALL("RTP input"),
2724			.p.flags = AVFMT_NOFILE,
2725			.p.priv_class = &rtp_demuxer_class,
2726			.priv_data_size = sizeof(RTSPState),
2727			.read_probe = rtp_probe,
2728			.read_header = rtp_read_header,
2729			.read_packet = ff_rtsp_fetch_packet,
2730			.read_close = sdp_read_close,
2731			};
2732			#endif /* CONFIG_RTP_DEMUXER */
2733