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		✗	size_t len = strlen(rtsp_st->control_url);
616		✗	if (len == 0 || rtsp_st->control_url[len - 1] != '/')
617		✗	av_strlcat(rtsp_st->control_url, "/",
618			sizeof(rtsp_st->control_url));
619		✗	av_strlcat(rtsp_st->control_url, p,
620			sizeof(rtsp_st->control_url));
621			} else
622		✗	av_strlcpy(rtsp_st->control_url, p,
623			sizeof(rtsp_st->control_url));
624			}
625		✗	} else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
626			/* NOTE: rtpmap is only supported AFTER the 'm=' tag */
627		✗	get_word(buf1, sizeof(buf1), &p);
628		✗	payload_type = atoi(buf1);
629		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
630		✗	if (rtsp_st->stream_index >= 0) {
631		✗	st = s->streams[rtsp_st->stream_index];
632		✗	sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
633			}
634		✗	s1->seen_rtpmap = 1;
635		✗	if (s1->seen_fmtp) {
636		✗	parse_fmtp(s, rt, payload_type, s1->delayed_fmtp);
637			}
638		✗	} else if (av_strstart(p, "fmtp:", &p) ||
639		✗	av_strstart(p, "framesize:", &p)) {
640			// let dynamic protocol handlers have a stab at the line.
641		✗	get_word(buf1, sizeof(buf1), &p);
642		✗	payload_type = atoi(buf1);
643		✗	if (s1->seen_rtpmap) {
644		✗	parse_fmtp(s, rt, payload_type, buf);
645			} else {
646		✗	s1->seen_fmtp = 1;
647		✗	av_strlcpy(s1->delayed_fmtp, buf, sizeof(s1->delayed_fmtp));
648			}
649		✗	} else if (av_strstart(p, "framerate:", &p) && s->nb_streams > 0) {
650			// RFC 8866
651			double framerate;
652		✗	if (av_sscanf(p, "%lf%c", &framerate, &(char){0}) == 1) {
653		✗	st = s->streams[s->nb_streams - 1];
654		✗	st->avg_frame_rate = av_d2q(framerate, INT_MAX);
655			}
656		✗	} else if (av_strstart(p, "ssrc:", &p) && s->nb_streams > 0) {
657		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
658		✗	get_word(buf1, sizeof(buf1), &p);
659		✗	rtsp_st->ssrc = strtoll(buf1, NULL, 10);
660		✗	} else if (av_strstart(p, "range:", &p)) {
661			int64_t start, end;
662
663			// this is so that seeking on a streamed file can work.
664		✗	rtsp_parse_range_npt(p, &start, &end);
665		✗	s->start_time = start;
666			/* AV_NOPTS_VALUE means live broadcast (and can't seek) */
667		✗	if (end != AV_NOPTS_VALUE)
668		✗	s->duration = end - start;
669		✗	} else if (av_strstart(p, "lang:", &p)) {
670		✗	if (s->nb_streams > 0) {
671		✗	get_word(buf1, sizeof(buf1), &p);
672		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
673		✗	if (rtsp_st->stream_index >= 0) {
674		✗	st = s->streams[rtsp_st->stream_index];
675		✗	av_dict_set(&st->metadata, "language", buf1, 0);
676			}
677			} else
678		✗	get_word(rt->default_lang, sizeof(rt->default_lang), &p);
679		✗	} else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
680		✗	if (atoi(p) == 1)
681		✗	rt->transport = RTSP_TRANSPORT_RDT;
682		✗	} else if (av_strstart(p, "SampleRate:integer;", &p) &&
683		✗	s->nb_streams > 0) {
684		✗	st = s->streams[s->nb_streams - 1];
685		✗	st->codecpar->sample_rate = atoi(p);
686		✗	} else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
687			// RFC 4568
688		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
689		✗	get_word(buf1, sizeof(buf1), &p); // ignore tag
690		✗	get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
691		✗	p += strspn(p, SPACE_CHARS);
692		✗	if (av_strstart(p, "inline:", &p))
693		✗	get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
694		✗	} else if (av_strstart(p, "source-filter:", &p)) {
695		✗	int exclude = 0;
696		✗	get_word(buf1, sizeof(buf1), &p);
697		✗	if (strcmp(buf1, "incl") && strcmp(buf1, "excl"))
698		✗	return;
699		✗	exclude = !strcmp(buf1, "excl");
700
701		✗	get_word(buf1, sizeof(buf1), &p);
702		✗	if (strcmp(buf1, "IN") != 0)
703		✗	return;
704		✗	get_word(buf1, sizeof(buf1), &p);
705		✗	if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6") && strcmp(buf1, "*"))
706		✗	return;
707			// not checking that the destination address actually matches or is wildcard
708		✗	get_word(buf1, sizeof(buf1), &p);
709
710		✗	while (*p != '\0') {
711		✗	rtsp_src = av_mallocz(sizeof(*rtsp_src));
712		✗	if (!rtsp_src)
713		✗	return;
714		✗	get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p);
715		✗	if (exclude) {
716		✗	if (s->nb_streams == 0) {
717		✗	dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src);
718			} else {
719		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
720		✗	dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src);
721			}
722			} else {
723		✗	if (s->nb_streams == 0) {
724		✗	dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src);
725			} else {
726		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
727		✗	dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src);
728			}
729			}
730			}
731			} else {
732		✗	if (rt->server_type == RTSP_SERVER_WMS)
733		✗	ff_wms_parse_sdp_a_line(s, p);
734		✗	if (s->nb_streams > 0) {
735		✗	rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
736
737		✗	if (rt->server_type == RTSP_SERVER_REAL)
738		✗	ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
739
740		✗	if (rtsp_st->dynamic_handler &&
741		✗	rtsp_st->dynamic_handler->parse_sdp_a_line)
742		✗	rtsp_st->dynamic_handler->parse_sdp_a_line(s,
743			rtsp_st->stream_index,
744			rtsp_st->dynamic_protocol_context, buf);
745			}
746			}
747		✗	break;
748			}
749			}
750
751		✗	int ff_sdp_parse(AVFormatContext *s, const char *content)
752			{
753			const char *p;
754			int letter, i;
755			char buf[SDP_MAX_SIZE], *q;
756		✗	SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
757
758		✗	s->duration = AV_NOPTS_VALUE;
759
760		✗	p = content;
761			for (;;) {
762		✗	p += strspn(p, SPACE_CHARS);
763		✗	letter = *p;
764		✗	if (letter == '\0')
765		✗	break;
766		✗	p++;
767		✗	if (*p != '=')
768		✗	goto next_line;
769		✗	p++;
770			/* get the content */
771		✗	q = buf;
772		✗	while (*p != '\n' && *p != '\r' && *p != '\0') {
773		✗	if ((q - buf) < sizeof(buf) - 1)
774		✗	*q++ = *p;
775		✗	p++;
776			}
777		✗	*q = '\0';
778		✗	sdp_parse_line(s, s1, letter, buf);
779		✗	next_line:
780		✗	while (*p != '\n' && *p != '\0')
781		✗	p++;
782		✗	if (*p == '\n')
783		✗	p++;
784			}
785
786		✗	for (i = 0; i < s1->nb_default_include_source_addrs; i++)
787		✗	av_freep(&s1->default_include_source_addrs[i]);
788		✗	av_freep(&s1->default_include_source_addrs);
789		✗	for (i = 0; i < s1->nb_default_exclude_source_addrs; i++)
790		✗	av_freep(&s1->default_exclude_source_addrs[i]);
791		✗	av_freep(&s1->default_exclude_source_addrs);
792
793		✗	if (s->duration == AV_NOPTS_VALUE)
794		✗	s->ctx_flags |= AVFMTCTX_UNSEEKABLE;
795
796		✗	return 0;
797			}
798			#endif /* CONFIG_RTPDEC */
799
800		✗	void ff_rtsp_undo_setup(AVFormatContext *s, int send_packets)
801			{
802		✗	RTSPState *rt = s->priv_data;
803			int i;
804
805		✗	rt->stored_msg.expected_seq = -1;
806		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
807		✗	RTSPStream *rtsp_st = rt->rtsp_streams[i];
808		✗	if (!rtsp_st)
809		✗	continue;
810		✗	if (rtsp_st->transport_priv) {
811		✗	if (s->oformat) {
812		✗	AVFormatContext *rtpctx = rtsp_st->transport_priv;
813		✗	av_write_trailer(rtpctx);
814		✗	if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
815		✗	if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets)
816		✗	ff_rtsp_tcp_write_packet(s, rtsp_st);
817		✗	ffio_free_dyn_buf(&rtpctx->pb);
818			} else {
819		✗	avio_closep(&rtpctx->pb);
820			}
821		✗	avformat_free_context(rtpctx);
822		✗	} else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT)
823		✗	ff_rdt_parse_close(rtsp_st->transport_priv);
824		✗	else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP)
825		✗	ff_rtp_parse_close(rtsp_st->transport_priv);
826			}
827		✗	rtsp_st->transport_priv = NULL;
828		✗	ffurl_closep(&rtsp_st->rtp_handle);
829			}
830		✗	}
831
832			/* close and free RTSP streams */
833		✗	void ff_rtsp_close_streams(AVFormatContext *s)
834			{
835		✗	RTSPState *rt = s->priv_data;
836			int i, j;
837			RTSPStream *rtsp_st;
838
839		✗	ff_rtsp_undo_setup(s, 0);
840		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
841		✗	rtsp_st = rt->rtsp_streams[i];
842		✗	if (rtsp_st) {
843		✗	if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) {
844		✗	if (rtsp_st->dynamic_handler->close)
845		✗	rtsp_st->dynamic_handler->close(
846		✗	rtsp_st->dynamic_protocol_context);
847		✗	av_free(rtsp_st->dynamic_protocol_context);
848			}
849		✗	for (j = 0; j < rtsp_st->nb_include_source_addrs; j++)
850		✗	av_freep(&rtsp_st->include_source_addrs[j]);
851		✗	av_freep(&rtsp_st->include_source_addrs);
852		✗	for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++)
853		✗	av_freep(&rtsp_st->exclude_source_addrs[j]);
854		✗	av_freep(&rtsp_st->exclude_source_addrs);
855
856		✗	av_freep(&rtsp_st);
857			}
858			}
859		✗	av_freep(&rt->rtsp_streams);
860		✗	if (rt->asf_ctx) {
861		✗	avformat_close_input(&rt->asf_ctx);
862			}
863		✗	if (CONFIG_RTPDEC && rt->ts)
864		✗	avpriv_mpegts_parse_close(rt->ts);
865		✗	av_freep(&rt->p);
866		✗	av_freep(&rt->recvbuf);
867		✗	}
868
869		✗	int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
870			{
871		✗	RTSPState *rt = s->priv_data;
872		✗	AVStream *st = NULL;
873		✗	int reordering_queue_size = rt->reordering_queue_size;
874		✗	if (reordering_queue_size < 0) {
875		✗	if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
876		✗	reordering_queue_size = 0;
877			else
878		✗	reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
879			}
880
881			/* open the RTP context */
882		✗	if (rtsp_st->stream_index >= 0)
883		✗	st = s->streams[rtsp_st->stream_index];
884		✗	if (!st)
885		✗	s->ctx_flags |= AVFMTCTX_NOHEADER;
886
887		✗	if (CONFIG_RTSP_MUXER && s->oformat && st) {
888		✗	int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv,
889			s, st, rtsp_st->rtp_handle,
890			rt->pkt_size,
891			rtsp_st->stream_index);
892			/* Ownership of rtp_handle is passed to the rtp mux context */
893		✗	rtsp_st->rtp_handle = NULL;
894		✗	if (ret < 0)
895		✗	return ret;
896		✗	st->time_base = ((AVFormatContext*)rtsp_st->transport_priv)->streams[0]->time_base;
897		✗	} else if (rt->transport == RTSP_TRANSPORT_RAW) {
898		✗	return 0; // Don't need to open any parser here
899		✗	} else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RDT && st)
900		✗	rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
901		✗	rtsp_st->dynamic_protocol_context,
902			rtsp_st->dynamic_handler);
903			else if (CONFIG_RTPDEC)
904		✗	rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
905			rtsp_st->sdp_payload_type,
906			reordering_queue_size);
907
908		✗	if (!rtsp_st->transport_priv) {
909		✗	return AVERROR(ENOMEM);
910		✗	} else if (CONFIG_RTPDEC && rt->transport == RTSP_TRANSPORT_RTP &&
911		✗	s->iformat) {
912		✗	RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
913		✗	rtpctx->ssrc = rtsp_st->ssrc;
914		✗	if (rtsp_st->dynamic_handler) {
915		✗	ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
916			rtsp_st->dynamic_protocol_context,
917			rtsp_st->dynamic_handler);
918			}
919		✗	if (rtsp_st->crypto_suite[0])
920		✗	ff_rtp_parse_set_crypto(rtsp_st->transport_priv,
921		✗	rtsp_st->crypto_suite,
922		✗	rtsp_st->crypto_params);
923			}
924
925		✗	return 0;
926			}
927
928			#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
929		✗	static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
930			{
931			const char *q;
932			char *p;
933			int v;
934
935		✗	q = *pp;
936		✗	q += strspn(q, SPACE_CHARS);
937		✗	v = strtol(q, &p, 10);
938		✗	if (*p == '-') {
939		✗	p++;
940		✗	*min_ptr = v;
941		✗	v = strtol(p, &p, 10);
942		✗	*max_ptr = v;
943			} else {
944		✗	*min_ptr = v;
945		✗	*max_ptr = v;
946			}
947		✗	*pp = p;
948		✗	}
949
950			/* XXX: only one transport specification is parsed */
951		✗	static void rtsp_parse_transport(AVFormatContext *s,
952			RTSPMessageHeader *reply, const char *p)
953			{
954			char transport_protocol[16];
955			char profile[16];
956			char lower_transport[16];
957			char parameter[16];
958			RTSPTransportField *th;
959			char buf[256];
960
961		✗	reply->nb_transports = 0;
962
963			for (;;) {
964		✗	p += strspn(p, SPACE_CHARS);
965		✗	if (*p == '\0')
966		✗	break;
967
968		✗	th = &reply->transports[reply->nb_transports];
969
970		✗	get_word_sep(transport_protocol, sizeof(transport_protocol),
971			"/", &p);
972		✗	if (!av_strcasecmp (transport_protocol, "rtp")) {
973		✗	get_word_sep(profile, sizeof(profile), "/;,", &p);
974		✗	lower_transport[0] = '\0';
975			/* rtp/avp/<protocol> */
976		✗	if (*p == '/') {
977		✗	get_word_sep(lower_transport, sizeof(lower_transport),
978			";,", &p);
979			}
980		✗	th->transport = RTSP_TRANSPORT_RTP;
981		✗	} else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
982		✗	!av_strcasecmp (transport_protocol, "x-real-rdt")) {
983			/* x-pn-tng/<protocol> */
984		✗	get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
985		✗	profile[0] = '\0';
986		✗	th->transport = RTSP_TRANSPORT_RDT;
987		✗	} else if (!av_strcasecmp(transport_protocol, "raw")) {
988		✗	get_word_sep(profile, sizeof(profile), "/;,", &p);
989		✗	lower_transport[0] = '\0';
990			/* raw/raw/<protocol> */
991		✗	if (*p == '/') {
992		✗	get_word_sep(lower_transport, sizeof(lower_transport),
993			";,", &p);
994			}
995		✗	th->transport = RTSP_TRANSPORT_RAW;
996			} else {
997		✗	break;
998			}
999		✗	if (!av_strcasecmp(lower_transport, "TCP"))
1000		✗	th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1001			else
1002		✗	th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
1003
1004		✗	if (*p == ';')
1005		✗	p++;
1006			/* get each parameter */
1007		✗	while (*p != '\0' && *p != ',') {
1008		✗	get_word_sep(parameter, sizeof(parameter), "=;,", &p);
1009		✗	if (!strcmp(parameter, "port")) {
1010		✗	if (*p == '=') {
1011		✗	p++;
1012		✗	rtsp_parse_range(&th->port_min, &th->port_max, &p);
1013			}
1014		✗	} else if (!strcmp(parameter, "client_port")) {
1015		✗	if (*p == '=') {
1016		✗	p++;
1017		✗	rtsp_parse_range(&th->client_port_min,
1018			&th->client_port_max, &p);
1019			}
1020		✗	} else if (!strcmp(parameter, "server_port")) {
1021		✗	if (*p == '=') {
1022		✗	p++;
1023		✗	rtsp_parse_range(&th->server_port_min,
1024			&th->server_port_max, &p);
1025			}
1026		✗	} else if (!strcmp(parameter, "interleaved")) {
1027		✗	if (*p == '=') {
1028		✗	p++;
1029		✗	rtsp_parse_range(&th->interleaved_min,
1030			&th->interleaved_max, &p);
1031			}
1032		✗	} else if (!strcmp(parameter, "multicast")) {
1033		✗	if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
1034		✗	th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1035		✗	} else if (!strcmp(parameter, "ttl")) {
1036		✗	if (*p == '=') {
1037			char *end;
1038		✗	p++;
1039		✗	th->ttl = strtol(p, &end, 10);
1040		✗	p = end;
1041			}
1042		✗	} else if (!strcmp(parameter, "destination")) {
1043		✗	if (*p == '=') {
1044		✗	p++;
1045		✗	get_word_sep(buf, sizeof(buf), ";,", &p);
1046		✗	get_sockaddr(s, buf, &th->destination);
1047			}
1048		✗	} else if (!strcmp(parameter, "source")) {
1049		✗	if (*p == '=') {
1050		✗	p++;
1051		✗	get_word_sep(buf, sizeof(buf), ";,", &p);
1052		✗	av_strlcpy(th->source, buf, sizeof(th->source));
1053			}
1054		✗	} else if (!strcmp(parameter, "mode")) {
1055		✗	if (*p == '=') {
1056		✗	p++;
1057		✗	get_word_sep(buf, sizeof(buf), ";, ", &p);
1058		✗	if (!av_strcasecmp(buf, "record") ||
1059		✗	!av_strcasecmp(buf, "receive"))
1060		✗	th->mode_record = 1;
1061			}
1062			}
1063
1064		✗	while (*p != ';' && *p != '\0' && *p != ',')
1065		✗	p++;
1066		✗	if (*p == ';')
1067		✗	p++;
1068			}
1069		✗	if (*p == ',')
1070		✗	p++;
1071
1072		✗	reply->nb_transports++;
1073		✗	if (reply->nb_transports >= RTSP_MAX_TRANSPORTS)
1074		✗	break;
1075			}
1076		✗	}
1077
1078		✗	static void handle_rtp_info(RTSPState *rt, const char *url,
1079			uint32_t seq, uint32_t rtptime)
1080			{
1081			int i;
1082		✗	if (!rtptime || !url[0])
1083		✗	return;
1084		✗	if (rt->transport != RTSP_TRANSPORT_RTP)
1085		✗	return;
1086		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
1087		✗	RTSPStream *rtsp_st = rt->rtsp_streams[i];
1088		✗	RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1089		✗	if (!rtpctx)
1090		✗	continue;
1091		✗	if (!strcmp(rtsp_st->control_url, url)) {
1092		✗	rtpctx->base_timestamp = rtptime;
1093		✗	break;
1094			}
1095			}
1096			}
1097
1098		✗	static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
1099			{
1100		✗	int read = 0;
1101		✗	char key[20], value[MAX_URL_SIZE], url[MAX_URL_SIZE] = "";
1102		✗	uint32_t seq = 0, rtptime = 0;
1103
1104			for (;;) {
1105		✗	p += strspn(p, SPACE_CHARS);
1106		✗	if (!*p)
1107		✗	break;
1108		✗	get_word_sep(key, sizeof(key), "=", &p);
1109		✗	if (*p != '=')
1110		✗	break;
1111		✗	p++;
1112		✗	get_word_sep(value, sizeof(value), ";, ", &p);
1113		✗	read++;
1114		✗	if (!strcmp(key, "url"))
1115		✗	av_strlcpy(url, value, sizeof(url));
1116		✗	else if (!strcmp(key, "seq"))
1117		✗	seq = strtoul(value, NULL, 10);
1118		✗	else if (!strcmp(key, "rtptime"))
1119		✗	rtptime = strtoul(value, NULL, 10);
1120		✗	if (*p == ',') {
1121		✗	handle_rtp_info(rt, url, seq, rtptime);
1122		✗	url[0] = '\0';
1123		✗	seq = rtptime = 0;
1124		✗	read = 0;
1125			}
1126		✗	if (*p)
1127		✗	p++;
1128			}
1129		✗	if (read > 0)
1130		✗	handle_rtp_info(rt, url, seq, rtptime);
1131		✗	}
1132
1133		✗	void ff_rtsp_parse_line(AVFormatContext *s,
1134			RTSPMessageHeader *reply, const char *buf,
1135			RTSPState *rt, const char *method)
1136			{
1137			const char *p;
1138
1139			/* NOTE: we do case independent match for broken servers */
1140		✗	p = buf;
1141		✗	if (av_stristart(p, "Session:", &p)) {
1142			int t;
1143		✗	get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
1144		✗	if (av_stristart(p, ";timeout=", &p) &&
1145		✗	(t = strtol(p, NULL, 10)) > 0) {
1146		✗	reply->timeout = t;
1147			}
1148		✗	} else if (av_stristart(p, "Content-Length:", &p)) {
1149		✗	reply->content_length = strtol(p, NULL, 10);
1150		✗	} else if (av_stristart(p, "Transport:", &p)) {
1151		✗	rtsp_parse_transport(s, reply, p);
1152		✗	} else if (av_stristart(p, "CSeq:", &p)) {
1153		✗	reply->seq = strtol(p, NULL, 10);
1154		✗	} else if (av_stristart(p, "Range:", &p)) {
1155		✗	rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
1156		✗	} else if (av_stristart(p, "RealChallenge1:", &p)) {
1157		✗	p += strspn(p, SPACE_CHARS);
1158		✗	av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
1159		✗	} else if (av_stristart(p, "Server:", &p)) {
1160		✗	p += strspn(p, SPACE_CHARS);
1161		✗	av_strlcpy(reply->server, p, sizeof(reply->server));
1162		✗	} else if (av_stristart(p, "Notice:", &p) ||
1163		✗	av_stristart(p, "X-Notice:", &p)) {
1164		✗	reply->notice = strtol(p, NULL, 10);
1165		✗	} else if (av_stristart(p, "Location:", &p)) {
1166		✗	p += strspn(p, SPACE_CHARS);
1167		✗	av_strlcpy(reply->location, p , sizeof(reply->location));
1168		✗	} else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
1169		✗	p += strspn(p, SPACE_CHARS);
1170		✗	ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
1171		✗	} else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
1172		✗	p += strspn(p, SPACE_CHARS);
1173		✗	ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
1174		✗	} else if (av_stristart(p, "Content-Base:", &p) && rt) {
1175		✗	p += strspn(p, SPACE_CHARS);
1176		✗	if (method && !strcmp(method, "DESCRIBE"))
1177		✗	av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
1178		✗	} else if (av_stristart(p, "RTP-Info:", &p) && rt) {
1179		✗	p += strspn(p, SPACE_CHARS);
1180		✗	if (method && !strcmp(method, "PLAY"))
1181		✗	rtsp_parse_rtp_info(rt, p);
1182		✗	} else if (av_stristart(p, "Public:", &p) && rt) {
1183		✗	if (strstr(p, "GET_PARAMETER") &&
1184		✗	method && !strcmp(method, "OPTIONS"))
1185		✗	rt->get_parameter_supported = 1;
1186		✗	} else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
1187		✗	p += strspn(p, SPACE_CHARS);
1188		✗	rt->accept_dynamic_rate = atoi(p);
1189		✗	} else if (av_stristart(p, "Content-Type:", &p)) {
1190		✗	p += strspn(p, SPACE_CHARS);
1191		✗	av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1192		✗	} else if (av_stristart(p, "com.ses.streamID:", &p)) {
1193		✗	p += strspn(p, SPACE_CHARS);
1194		✗	av_strlcpy(reply->stream_id, p, sizeof(reply->stream_id));
1195			}
1196		✗	}
1197
1198			/* skip a RTP/TCP interleaved packet */
1199		✗	int ff_rtsp_skip_packet(AVFormatContext *s)
1200			{
1201		✗	RTSPState *rt = s->priv_data;
1202			int ret, len, len1;
1203			uint8_t buf[MAX_URL_SIZE];
1204
1205		✗	rt->pending_packet = 0;
1206		✗	ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
1207		✗	if (ret != 3)
1208		✗	return ret < 0 ? ret : AVERROR(EIO);
1209		✗	len = AV_RB16(buf + 1);
1210
1211		✗	av_log(s, AV_LOG_TRACE, "skipping RTP packet len=%d\n", len);
1212
1213			/* skip payload */
1214		✗	while (len > 0) {
1215		✗	len1 = len;
1216		✗	if (len1 > sizeof(buf))
1217		✗	len1 = sizeof(buf);
1218		✗	ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
1219		✗	if (ret != len1)
1220		✗	return ret < 0 ? ret : AVERROR(EIO);
1221		✗	len -= len1;
1222			}
1223
1224		✗	return 0;
1225			}
1226
1227		✗	static int ff_rtsp_read_reply_internal(AVFormatContext *s,
1228			RTSPMessageHeader *reply,
1229			unsigned char **content_ptr,
1230			int return_on_interleaved_data,
1231			const char *method)
1232			{
1233		✗	RTSPState *rt = s->priv_data;
1234			char buf[MAX_URL_SIZE], buf1[MAX_URL_SIZE], *q;
1235			unsigned char ch;
1236			const char *p;
1237			int ret, content_length, line_count, request;
1238			unsigned char *content;
1239
1240		✗	start:
1241		✗	line_count = 0;
1242		✗	request = 0;
1243		✗	content = NULL;
1244		✗	memset(reply, 0, sizeof(*reply));
1245
1246			/* parse reply (XXX: use buffers) */
1247		✗	rt->last_reply[0] = '\0';
1248			for (;;) {
1249		✗	q = buf;
1250			for (;;) {
1251		✗	ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
1252		✗	if (ret != 1) {
1253		✗	ret = (ret < 0) ? ret : AVERROR(EIO);
1254		✗	av_log(s, AV_LOG_WARNING, "Failed reading RTSP data: %s\n", av_err2str(ret));
1255		✗	return ret;
1256			}
1257		✗	av_log(s, AV_LOG_TRACE, "ret=%d c=%02x [%c]\n", ret, ch, ch);
1258		✗	if (ch == '\n')
1259		✗	break;
1260		✗	if (ch == '$' && q == buf) {
1261		✗	if (return_on_interleaved_data) {
1262		✗	rt->pending_packet = 1;
1263		✗	return 1;
1264			} else {
1265		✗	ret = ff_rtsp_skip_packet(s);
1266		✗	if (ret < 0)
1267		✗	return ret;
1268			}
1269		✗	} else if (ch != '\r') {
1270		✗	if ((q - buf) < sizeof(buf) - 1)
1271		✗	*q++ = ch;
1272			}
1273			}
1274		✗	*q = '\0';
1275
1276		✗	av_log(s, AV_LOG_TRACE, "line='%s'\n", buf);
1277
1278			/* test if last line */
1279		✗	if (buf[0] == '\0')
1280		✗	break;
1281		✗	p = buf;
1282		✗	if (line_count == 0) {
1283			/* get reply code */
1284		✗	get_word(buf1, sizeof(buf1), &p);
1285		✗	if (!strncmp(buf1, "RTSP/", 5)) {
1286		✗	get_word(buf1, sizeof(buf1), &p);
1287		✗	reply->status_code = atoi(buf1);
1288		✗	p += strspn(p, SPACE_CHARS);
1289		✗	av_strlcpy(reply->reason, p, sizeof(reply->reason));
1290			} else {
1291		✗	av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1292		✗	get_word(buf1, sizeof(buf1), &p); // object
1293		✗	request = 1;
1294			}
1295			} else {
1296		✗	ff_rtsp_parse_line(s, reply, p, rt, method);
1297		✗	av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1298		✗	av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1299			}
1300		✗	line_count++;
1301			}
1302
1303		✗	if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
1304		✗	av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
1305
1306		✗	content_length = reply->content_length;
1307		✗	if (content_length > 0) {
1308			/* leave some room for a trailing '\0' (useful for simple parsing) */
1309		✗	content = av_malloc(content_length + 1);
1310		✗	if (!content)
1311		✗	return AVERROR(ENOMEM);
1312		✗	if ((ret = ffurl_read_complete(rt->rtsp_hd, content, content_length)) != content_length) {
1313		✗	av_freep(&content);
1314		✗	return ret < 0 ? ret : AVERROR(EIO);
1315			}
1316		✗	content[content_length] = '\0';
1317			}
1318		✗	if (content_ptr)
1319		✗	*content_ptr = content;
1320			else
1321		✗	av_freep(&content);
1322
1323		✗	if (request) {
1324			char buf[MAX_URL_SIZE];
1325			char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1326		✗	const char* ptr = buf;
1327
1328		✗	if (!strcmp(reply->reason, "OPTIONS") ||
1329		✗	!strcmp(reply->reason, "GET_PARAMETER")) {
1330		✗	snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1331		✗	if (reply->seq)
1332		✗	av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1333		✗	if (reply->session_id[0])
1334		✗	av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1335		✗	reply->session_id);
1336			} else {
1337		✗	snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1338			}
1339		✗	av_strlcat(buf, "\r\n", sizeof(buf));
1340
1341		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1342		✗	av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1343		✗	ptr = base64buf;
1344			}
1345		✗	ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1346
1347		✗	rt->last_cmd_time = av_gettime_relative();
1348			/* Even if the request from the server had data, it is not the data
1349			* that the caller wants or expects. The memory could also be leaked
1350			* if the actual following reply has content data. */
1351		✗	if (content_ptr)
1352		✗	av_freep(content_ptr);
1353			/* If method is set, this is called from ff_rtsp_send_cmd,
1354			* where a reply to exactly this request is awaited. For
1355			* callers from within packet receiving, we just want to
1356			* return to the caller and go back to receiving packets. */
1357		✗	if (method)
1358		✗	goto start;
1359		✗	return 0;
1360			}
1361
1362		✗	if (rt->seq != reply->seq) {
1363		✗	av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1364			rt->seq, reply->seq);
1365			}
1366
1367			/* EOS */
1368		✗	if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1369		✗	reply->notice == 2104 /* Start-of-Stream Reached */ ||
1370		✗	reply->notice == 2306 /* Continuous Feed Terminated */) {
1371		✗	rt->state = RTSP_STATE_IDLE;
1372		✗	} else if (reply->notice >= 4400 && reply->notice < 5500) {
1373		✗	return AVERROR(EIO); /* data or server error */
1374		✗	} else if (reply->notice == 2401 /* Ticket Expired */ ||
1375		✗	(reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1376		✗	return AVERROR(EPERM);
1377
1378		✗	return 0;
1379			}
1380
1381		✗	int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
1382			unsigned char **content_ptr,
1383			int return_on_interleaved_data, const char *method)
1384			{
1385			int ret;
1386		✗	RTSPState *rt = s->priv_data;
1387
1388			// If we returned on pending packet last time,
1389			// do not try to read again, as it would corrupt
1390			// the state due to the already consumed '$'.
1391		✗	if (rt->pending_packet) {
1392		✗	if (return_on_interleaved_data)
1393		✗	return 1;
1394
1395		✗	ret = ff_rtsp_skip_packet(s);
1396		✗	if (ret < 0)
1397		✗	return ret;
1398			}
1399
1400		✗	if (rt->stored_msg.expected_seq != -1) {
1401			RTSPMessageHeader header;
1402
1403		✗	ret = ff_rtsp_read_reply_internal(s, &header,
1404			&rt->stored_msg.body, return_on_interleaved_data, NULL);
1405		✗	if (ret != 0)
1406		✗	return ret;
1407
1408		✗	if (rt->stored_msg.expected_seq == header.seq) {
1409			// Got the expected reply, store it for later
1410		✗	rt->stored_msg.expected_seq = -1;
1411		✗	rt->stored_msg.header = av_calloc(1, sizeof(*rt->stored_msg.header));
1412		✗	if (!rt->stored_msg.header) {
1413		✗	av_freep(&rt->stored_msg.body);
1414		✗	return AVERROR(ENOMEM);
1415			}
1416		✗	memcpy(rt->stored_msg.header, &header, sizeof(header));
1417			} else {
1418		✗	av_log(s, AV_LOG_WARNING, "Unexpected reply with seq %d, expected %d\n",
1419			header.seq, rt->stored_msg.expected_seq);
1420		✗	av_freep(&rt->stored_msg.body);
1421			}
1422
1423			// Do not return here as we still need to read the reply
1424			// the caller was actually wanting to retrieve.
1425			}
1426
1427		✗	return ff_rtsp_read_reply_internal(s, reply, content_ptr,
1428			return_on_interleaved_data, method);
1429			}
1430
1431			/**
1432			* Send a command to the RTSP server without waiting for the reply.
1433			*
1434			* @param s RTSP (de)muxer context
1435			* @param method the method for the request
1436			* @param url the target url for the request
1437			* @param headers extra header lines to include in the request
1438			* @param send_content if non-null, the data to send as request body content
1439			* @param send_content_length the length of the send_content data, or 0 if
1440			* send_content is null
1441			*
1442			* @return zero if success, nonzero otherwise
1443			*/
1444		✗	int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1445			const char *method, const char *url,
1446			const char *headers,
1447			const unsigned char *send_content,
1448			int send_content_length)
1449			{
1450		✗	RTSPState *rt = s->priv_data;
1451			char buf[MAX_URL_SIZE], *out_buf;
1452			char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1453
1454		✗	if (!rt->rtsp_hd_out)
1455		✗	return AVERROR(ENOTCONN);
1456
1457			/* Add in RTSP headers */
1458		✗	out_buf = buf;
1459		✗	rt->seq++;
1460		✗	snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1461		✗	if (headers)
1462		✗	av_strlcat(buf, headers, sizeof(buf));
1463		✗	av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
1464		✗	av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", rt->user_agent);
1465		✗	if (rt->session_id[0] != '\0' && (!headers ||
1466		✗	!strstr(headers, "\nIf-Match:"))) {
1467		✗	av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
1468			}
1469		✗	if (rt->auth[0]) {
1470		✗	char *str = ff_http_auth_create_response(&rt->auth_state,
1471		✗	rt->auth, url, method);
1472		✗	if (str)
1473		✗	av_strlcat(buf, str, sizeof(buf));
1474		✗	av_free(str);
1475			}
1476		✗	if (send_content_length > 0 && send_content)
1477		✗	av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
1478		✗	av_strlcat(buf, "\r\n", sizeof(buf));
1479
1480			/* base64 encode rtsp if tunneling */
1481		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1482		✗	av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1483		✗	out_buf = base64buf;
1484			}
1485
1486		✗	av_log(s, AV_LOG_TRACE, "Sending:\n%s--\n", buf);
1487
1488		✗	ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
1489		✗	if (send_content_length > 0 && send_content) {
1490		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1491		✗	avpriv_report_missing_feature(s, "Tunneling of RTSP requests with content data");
1492		✗	return AVERROR_PATCHWELCOME;
1493			}
1494		✗	ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
1495			}
1496		✗	rt->last_cmd_time = av_gettime_relative();
1497
1498		✗	return 0;
1499			}
1500
1501		✗	int ff_rtsp_send_cmd_with_content_async_stored(AVFormatContext *s,
1502			const char *method, const char *url,
1503			const char *headers,
1504			const unsigned char *send_content,
1505			int send_content_length)
1506			{
1507		✗	RTSPState *rt = s->priv_data;
1508		✗	int ret = ff_rtsp_send_cmd_with_content_async(s, method, url, headers,
1509			send_content, send_content_length);
1510		✗	if (ret < 0)
1511		✗	return ret;
1512
1513		✗	rt->stored_msg.expected_seq = rt->seq;
1514		✗	av_freep(&rt->stored_msg.header);
1515		✗	av_freep(&rt->stored_msg.body);
1516		✗	return 0;
1517			}
1518
1519		✗	int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
1520			const char *url, const char *headers)
1521			{
1522		✗	return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
1523			}
1524
1525		✗	int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
1526			const char *headers, RTSPMessageHeader *reply,
1527			unsigned char **content_ptr)
1528			{
1529		✗	return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
1530			content_ptr, NULL, 0);
1531			}
1532
1533		✗	int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
1534			const char *method, const char *url,
1535			const char *header,
1536			RTSPMessageHeader *reply,
1537			unsigned char **content_ptr,
1538			const unsigned char *send_content,
1539			int send_content_length)
1540			{
1541		✗	RTSPState *rt = s->priv_data;
1542			HTTPAuthType cur_auth_type;
1543		✗	int ret, attempts = 0;
1544
1545		✗	retry:
1546		✗	cur_auth_type = rt->auth_state.auth_type;
1547		✗	if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
1548			send_content,
1549			send_content_length)) < 0)
1550		✗	return ret;
1551
1552		✗	if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
1553		✗	return ret;
1554		✗	attempts++;
1555
1556		✗	if (reply->status_code == 401 &&
1557		✗	(cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1558		✗	rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
1559		✗	goto retry;
1560
1561		✗	if (reply->status_code > 400){
1562		✗	av_log(s, AV_LOG_ERROR, "method %s failed: %d (%s)\n",
1563			method,
1564		✗	reply->status_code,
1565		✗	reply->reason);
1566		✗	av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1567			}
1568
1569		✗	return 0;
1570			}
1571
1572		✗	int ff_rtsp_read_reply_async_stored(AVFormatContext *s, RTSPMessageHeader **reply,
1573			unsigned char **content_ptr)
1574			{
1575		✗	RTSPState *rt = s->priv_data;
1576		✗	if (rt->stored_msg.header == NULL) {
1577		✗	if (rt->stored_msg.expected_seq == -1)
1578		✗	return AVERROR(EINVAL); // Reply to be stored was never requested
1579
1580			// Reply pending, tell caller to try again later
1581		✗	return AVERROR(EAGAIN);
1582			}
1583
1584		✗	if (reply)
1585		✗	*reply = rt->stored_msg.header;
1586			else
1587		✗	av_free(rt->stored_msg.header);
1588
1589		✗	if (content_ptr)
1590		✗	*content_ptr = rt->stored_msg.body;
1591			else
1592		✗	av_free(rt->stored_msg.body);
1593
1594		✗	rt->stored_msg.header = NULL;
1595		✗	rt->stored_msg.body = NULL;
1596		✗	return 0;
1597			}
1598
1599		✗	int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
1600			int lower_transport, const char *real_challenge)
1601			{
1602		✗	RTSPState *rt = s->priv_data;
1603		✗	int rtx = 0, j, i, err, interleave = 0, port_off = 0;
1604			RTSPStream *rtsp_st;
1605		✗	RTSPMessageHeader reply1, *reply = &reply1;
1606			char cmd[MAX_URL_SIZE];
1607			const char *trans_pref;
1608
1609		✗	memset(&reply1, 0, sizeof(reply1));
1610
1611		✗	if (rt->transport == RTSP_TRANSPORT_RDT)
1612		✗	trans_pref = "x-pn-tng";
1613		✗	else if (rt->transport == RTSP_TRANSPORT_RAW)
1614		✗	trans_pref = "RAW/RAW";
1615			else
1616		✗	trans_pref = "RTP/AVP";
1617
1618			/* default timeout: 1 minute */
1619		✗	rt->timeout = 60;
1620
1621			/* Choose a random starting offset within the first half of the
1622			* port range, to allow for a number of ports to try even if the offset
1623			* happens to be at the end of the random range. */
1624		✗	if (rt->rtp_port_max - rt->rtp_port_min >= 4) {
1625		✗	port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1626			/* even random offset */
1627		✗	port_off -= port_off & 0x01;
1628			}
1629
1630		✗	for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1631			char transport[MAX_URL_SIZE];
1632
1633			/*
1634			* WMS serves all UDP data over a single connection, the RTX, which
1635			* isn't necessarily the first in the SDP but has to be the first
1636			* to be set up, else the second/third SETUP will fail with a 461.
1637			*/
1638		✗	if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1639		✗	rt->server_type == RTSP_SERVER_WMS) {
1640		✗	if (i == 0) {
1641			/* rtx first */
1642		✗	for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1643		✗	int len = strlen(rt->rtsp_streams[rtx]->control_url);
1644		✗	if (len >= 4 &&
1645		✗	!strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1646			"/rtx"))
1647		✗	break;
1648			}
1649		✗	if (rtx == rt->nb_rtsp_streams)
1650		✗	return -1; /* no RTX found */
1651		✗	rtsp_st = rt->rtsp_streams[rtx];
1652			} else
1653		✗	rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1654			} else
1655		✗	rtsp_st = rt->rtsp_streams[i];
1656
1657			/* RTP/UDP */
1658		✗	if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
1659			char buf[256];
1660
1661		✗	if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1662		✗	port = reply->transports[0].client_port_min;
1663		✗	goto have_port;
1664			}
1665
1666			/* first try in specified port range */
1667		✗	while (j + 1 <= rt->rtp_port_max) {
1668		✗	AVDictionary *opts = map_to_opts(rt);
1669
1670		✗	ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1671			"?localrtpport=%d", j);
1672			/* we will use two ports per rtp stream (rtp and rtcp) */
1673		✗	j += 2;
1674		✗	err = ffurl_open_whitelist(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1675		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
1676
1677		✗	av_dict_free(&opts);
1678
1679		✗	if (!err)
1680		✗	goto rtp_opened;
1681			}
1682		✗	av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1683		✗	err = AVERROR(EIO);
1684		✗	goto fail;
1685
1686		✗	rtp_opened:
1687		✗	port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
1688		✗	have_port:
1689		✗	av_strlcpy(transport, trans_pref, sizeof(transport));
1690		✗	av_strlcat(transport,
1691		✗	rt->server_type == RTSP_SERVER_SATIP ? ";" : "/UDP;",
1692			sizeof(transport));
1693		✗	if (rt->server_type != RTSP_SERVER_REAL)
1694		✗	av_strlcat(transport, "unicast;", sizeof(transport));
1695		✗	av_strlcatf(transport, sizeof(transport),
1696			"client_port=%d", port);
1697		✗	if (rt->transport == RTSP_TRANSPORT_RTP &&
1698		✗	!(rt->server_type == RTSP_SERVER_WMS && i > 0))
1699		✗	av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1700			}
1701
1702			/* RTP/TCP */
1703		✗	else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1704			/* For WMS streams, the application streams are only used for
1705			* UDP. When trying to set it up for TCP streams, the server
1706			* will return an error. Therefore, we skip those streams. */
1707		✗	if (rt->server_type == RTSP_SERVER_WMS &&
1708		✗	(rtsp_st->stream_index < 0 ||
1709		✗	s->streams[rtsp_st->stream_index]->codecpar->codec_type ==
1710			AVMEDIA_TYPE_DATA))
1711		✗	continue;
1712		✗	snprintf(transport, sizeof(transport) - 1,
1713			"%s/TCP;", trans_pref);
1714		✗	if (rt->transport != RTSP_TRANSPORT_RDT)
1715		✗	av_strlcat(transport, "unicast;", sizeof(transport));
1716		✗	av_strlcatf(transport, sizeof(transport),
1717			"interleaved=%d-%d",
1718			interleave, interleave + 1);
1719		✗	interleave += 2;
1720			}
1721
1722		✗	else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
1723		✗	snprintf(transport, sizeof(transport) - 1,
1724			"%s/UDP;multicast", trans_pref);
1725			} else {
1726		✗	err = AVERROR(EINVAL);
1727		✗	goto fail; // transport would be uninitialized
1728			}
1729
1730		✗	if (s->oformat) {
1731		✗	av_strlcat(transport, ";mode=record", sizeof(transport));
1732		✗	} else if (rt->server_type == RTSP_SERVER_REAL ||
1733		✗	rt->server_type == RTSP_SERVER_WMS)
1734		✗	av_strlcat(transport, ";mode=play", sizeof(transport));
1735		✗	snprintf(cmd, sizeof(cmd),
1736			"Transport: %s\r\n",
1737			transport);
1738		✗	if (rt->accept_dynamic_rate)
1739		✗	av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
1740		✗	if (CONFIG_RTPDEC && i == 0 && rt->server_type == RTSP_SERVER_REAL) {
1741			char real_res[41], real_csum[9];
1742		✗	ff_rdt_calc_response_and_checksum(real_res, real_csum,
1743			real_challenge);
1744		✗	av_strlcatf(cmd, sizeof(cmd),
1745			"If-Match: %s\r\n"
1746			"RealChallenge2: %s, sd=%s\r\n",
1747		✗	rt->session_id, real_res, real_csum);
1748			}
1749		✗	ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
1750		✗	if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1751		✗	err = 1;
1752		✗	goto fail;
1753		✗	} else if (reply->status_code != RTSP_STATUS_OK ||
1754		✗	reply->nb_transports != 1) {
1755		✗	err = ff_rtsp_averror(reply->status_code, AVERROR_INVALIDDATA);
1756		✗	goto fail;
1757			}
1758
1759		✗	if (rt->server_type == RTSP_SERVER_SATIP && reply->stream_id[0]) {
1760			char proto[128], host[128], path[512], auth[128];
1761			int port;
1762		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth), host, sizeof(host),
1763		✗	&port, path, sizeof(path), rt->control_uri);
1764		✗	ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL, host,
1765		✗	port, "/stream=%s", reply->stream_id);
1766			}
1767
1768			/* XXX: same protocol for all streams is required */
1769		✗	if (i > 0) {
1770		✗	if (reply->transports[0].lower_transport != rt->lower_transport ||
1771		✗	reply->transports[0].transport != rt->transport) {
1772		✗	err = AVERROR_INVALIDDATA;
1773		✗	goto fail;
1774			}
1775			} else {
1776		✗	rt->lower_transport = reply->transports[0].lower_transport;
1777		✗	rt->transport = reply->transports[0].transport;
1778			}
1779
1780			/* Fail if the server responded with another lower transport mode
1781			* than what we requested. */
1782		✗	if (reply->transports[0].lower_transport != lower_transport) {
1783		✗	av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1784		✗	err = AVERROR_INVALIDDATA;
1785		✗	goto fail;
1786			}
1787
1788		✗	switch(reply->transports[0].lower_transport) {
1789		✗	case RTSP_LOWER_TRANSPORT_TCP:
1790		✗	rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1791		✗	rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1792		✗	break;
1793
1794		✗	case RTSP_LOWER_TRANSPORT_UDP: {
1795		✗	char url[MAX_URL_SIZE], options[30] = "";
1796		✗	const char *peer = host;
1797
1798		✗	if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
1799		✗	av_strlcpy(options, "?connect=1", sizeof(options));
1800			/* Use source address if specified */
1801		✗	if (reply->transports[0].source[0])
1802		✗	peer = reply->transports[0].source;
1803		✗	ff_url_join(url, sizeof(url), "rtp", NULL, peer,
1804			reply->transports[0].server_port_min, "%s", options);
1805		✗	if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1806		✗	ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1807		✗	err = AVERROR_INVALIDDATA;
1808		✗	goto fail;
1809			}
1810		✗	break;
1811			}
1812		✗	case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1813		✗	char url[MAX_URL_SIZE], namebuf[50], optbuf[20] = "";
1814			struct sockaddr_storage addr;
1815			int port, ttl;
1816		✗	AVDictionary *opts = map_to_opts(rt);
1817
1818		✗	if (reply->transports[0].destination.ss_family) {
1819		✗	addr = reply->transports[0].destination;
1820		✗	port = reply->transports[0].port_min;
1821		✗	ttl = reply->transports[0].ttl;
1822			} else {
1823		✗	addr = rtsp_st->sdp_ip;
1824		✗	port = rtsp_st->sdp_port;
1825		✗	ttl = rtsp_st->sdp_ttl;
1826			}
1827		✗	if (ttl > 0)
1828		✗	snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
1829		✗	getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1830			namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1831		✗	ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
1832			port, "%s", optbuf);
1833		✗	err = ffurl_open_whitelist(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
1834		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
1835		✗	av_dict_free(&opts);
1836
1837		✗	if (err < 0) {
1838		✗	err = AVERROR_INVALIDDATA;
1839		✗	goto fail;
1840			}
1841		✗	break;
1842			}
1843			}
1844
1845		✗	if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
1846		✗	goto fail;
1847			}
1848
1849		✗	if (rt->nb_rtsp_streams && reply->timeout > 0)
1850		✗	rt->timeout = reply->timeout;
1851
1852		✗	if (rt->server_type == RTSP_SERVER_REAL)
1853		✗	rt->need_subscription = 1;
1854
1855		✗	return 0;
1856
1857		✗	fail:
1858		✗	ff_rtsp_undo_setup(s, 0);
1859		✗	return err;
1860			}
1861
1862		✗	void ff_rtsp_close_connections(AVFormatContext *s)
1863			{
1864		✗	RTSPState *rt = s->priv_data;
1865		✗	if (rt->rtsp_hd_out != rt->rtsp_hd)
1866		✗	ffurl_closep(&rt->rtsp_hd_out);
1867		✗	rt->rtsp_hd_out = NULL;
1868		✗	ffurl_closep(&rt->rtsp_hd);
1869		✗	}
1870
1871		✗	int ff_rtsp_connect(AVFormatContext *s)
1872			{
1873		✗	RTSPState *rt = s->priv_data;
1874			char proto[128], host[1024], path[2048];
1875			char tcpname[1024], cmd[MAX_URL_SIZE], auth[128];
1876		✗	const char *lower_rtsp_proto = "tcp";
1877			int port, err, tcp_fd;
1878		✗	RTSPMessageHeader reply1, *reply = &reply1;
1879		✗	int lower_transport_mask = 0;
1880		✗	int default_port = RTSP_DEFAULT_PORT;
1881		✗	int https_tunnel = 0;
1882		✗	char real_challenge[64] = "";
1883			struct sockaddr_storage peer;
1884		✗	socklen_t peer_len = sizeof(peer);
1885
1886		✗	rt->stored_msg.expected_seq = -1;
1887		✗	if (rt->rtp_port_max < rt->rtp_port_min) {
1888		✗	av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1889			"than min port %d\n", rt->rtp_port_max,
1890			rt->rtp_port_min);
1891		✗	return AVERROR(EINVAL);
1892			}
1893
1894		✗	if (!ff_network_init())
1895		✗	return AVERROR(EIO);
1896
1897		✗	if (s->max_delay < 0) /* Not set by the caller */
1898		✗	s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
1899
1900		✗	rt->control_transport = RTSP_MODE_PLAIN;
1901		✗	if (rt->lower_transport_mask & ((1 << RTSP_LOWER_TRANSPORT_HTTP) |
1902			(1 << RTSP_LOWER_TRANSPORT_HTTPS))) {
1903		✗	https_tunnel = !!(rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTPS));
1904		✗	rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1905		✗	rt->control_transport = RTSP_MODE_TUNNEL;
1906			}
1907			/* Only pass through valid flags from here */
1908		✗	rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1909
1910		✗	redirect:
1911		✗	memset(&reply1, 0, sizeof(reply1));
1912			/* extract hostname and port */
1913		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth),
1914		✗	host, sizeof(host), &port, path, sizeof(path), s->url);
1915
1916		✗	if (!strcmp(proto, "rtsps")) {
1917		✗	lower_rtsp_proto = "tls";
1918		✗	default_port = RTSPS_DEFAULT_PORT;
1919		✗	rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1920		✗	} else if (!strcmp(proto, "satip")) {
1921		✗	av_strlcpy(proto, "rtsp", sizeof(proto));
1922		✗	rt->server_type = RTSP_SERVER_SATIP;
1923		✗	} else if (strcmp(proto, "rtsp"))
1924		✗	return AVERROR_INVALIDDATA;
1925
1926		✗	if (*auth) {
1927		✗	av_strlcpy(rt->auth, auth, sizeof(rt->auth));
1928			}
1929		✗	if (port < 0)
1930		✗	port = default_port;
1931
1932		✗	lower_transport_mask = rt->lower_transport_mask;
1933
1934		✗	if (!lower_transport_mask)
1935		✗	lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
1936
1937		✗	if (s->oformat) {
1938			/* Only UDP or TCP - UDP multicast isn't supported. */
1939		✗	lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1940			(1 << RTSP_LOWER_TRANSPORT_TCP);
1941		✗	if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
1942		✗	av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
1943			"only UDP and TCP are supported for output.\n");
1944		✗	err = AVERROR(EINVAL);
1945		✗	goto fail;
1946			}
1947			}
1948
1949			/* Construct the URI used in request; this is similar to s->url,
1950			* but with authentication credentials removed and RTSP specific options
1951			* stripped out. */
1952		✗	ff_url_join(rt->control_uri, sizeof(rt->control_uri), proto, NULL,
1953			host, port, "%s", path);
1954
1955		✗	if (rt->control_transport == RTSP_MODE_TUNNEL) {
1956			/* set up initial handshake for tunneling */
1957			char httpname[1024];
1958			char sessioncookie[17];
1959			char headers[1024];
1960		✗	AVDictionary *options = NULL;
1961
1962		✗	av_dict_set_int(&options, "timeout", rt->stimeout, 0);
1963		✗	if (https_tunnel) {
1964		✗	int ret = copy_tls_opts_dict(rt, &options);
1965		✗	if (ret < 0) {
1966		✗	av_dict_free(&options);
1967		✗	err = ret;
1968		✗	goto fail;
1969			}
1970			}
1971
1972		✗	ff_url_join(httpname, sizeof(httpname), https_tunnel ? "https" : "http", auth, host, port, "%s", path);
1973		✗	snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1974			av_get_random_seed(), av_get_random_seed());
1975
1976			/* GET requests */
1977		✗	if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1978		✗	&s->interrupt_callback) < 0) {
1979		✗	av_dict_free(&options);
1980		✗	err = AVERROR(EIO);
1981		✗	goto fail;
1982			}
1983
1984			/* generate GET headers */
1985		✗	snprintf(headers, sizeof(headers),
1986			"x-sessioncookie: %s\r\n"
1987			"Accept: application/x-rtsp-tunnelled\r\n"
1988			"Pragma: no-cache\r\n"
1989			"Cache-Control: no-cache\r\n",
1990			sessioncookie);
1991		✗	av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
1992
1993		✗	if (!rt->rtsp_hd->protocol_whitelist && s->protocol_whitelist) {
1994		✗	rt->rtsp_hd->protocol_whitelist = av_strdup(s->protocol_whitelist);
1995		✗	if (!rt->rtsp_hd->protocol_whitelist) {
1996		✗	av_dict_free(&options);
1997		✗	err = AVERROR(ENOMEM);
1998		✗	goto fail;
1999			}
2000			}
2001
2002		✗	if (!rt->rtsp_hd->protocol_blacklist && s->protocol_blacklist) {
2003		✗	rt->rtsp_hd->protocol_blacklist = av_strdup(s->protocol_blacklist);
2004		✗	if (!rt->rtsp_hd->protocol_blacklist) {
2005		✗	av_dict_free(&options);
2006		✗	err = AVERROR(ENOMEM);
2007		✗	goto fail;
2008			}
2009			}
2010
2011			/* complete the connection */
2012		✗	if (ffurl_connect(rt->rtsp_hd, &options)) {
2013		✗	av_dict_free(&options);
2014		✗	err = AVERROR(EIO);
2015		✗	goto fail;
2016			}
2017
2018			/* POST requests */
2019		✗	if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
2020		✗	&s->interrupt_callback) < 0 ) {
2021		✗	av_dict_free(&options);
2022		✗	err = AVERROR(EIO);
2023		✗	goto fail;
2024			}
2025
2026			/* generate POST headers */
2027		✗	snprintf(headers, sizeof(headers),
2028			"x-sessioncookie: %s\r\n"
2029			"Content-Type: application/x-rtsp-tunnelled\r\n"
2030			"Pragma: no-cache\r\n"
2031			"Cache-Control: no-cache\r\n"
2032			"Content-Length: 32767\r\n"
2033			"Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
2034			sessioncookie);
2035		✗	av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
2036		✗	av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
2037		✗	av_opt_set(rt->rtsp_hd_out->priv_data, "send_expect_100", "0", 0);
2038
2039			/* Initialize the authentication state for the POST session. The HTTP
2040			* protocol implementation doesn't properly handle multi-pass
2041			* authentication for POST requests, since it would require one of
2042			* the following:
2043			* - implementing Expect: 100-continue, which many HTTP servers
2044			* don't support anyway, even less the RTSP servers that do HTTP
2045			* tunneling
2046			* - sending the whole POST data until getting a 401 reply specifying
2047			* what authentication method to use, then resending all that data
2048			* - waiting for potential 401 replies directly after sending the
2049			* POST header (waiting for some unspecified time)
2050			* Therefore, we copy the full auth state, which works for both basic
2051			* and digest. (For digest, we would have to synchronize the nonce
2052			* count variable between the two sessions, if we'd do more requests
2053			* with the original session, though.)
2054			*/
2055		✗	ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
2056
2057			/* complete the connection */
2058		✗	if (ffurl_connect(rt->rtsp_hd_out, &options)) {
2059		✗	av_dict_free(&options);
2060		✗	err = AVERROR(EIO);
2061		✗	goto fail;
2062			}
2063		✗	av_dict_free(&options);
2064			} else {
2065			int ret;
2066			/* open the tcp connection */
2067		✗	AVDictionary *proto_opts = NULL;
2068		✗	if (strcmp("tls", lower_rtsp_proto) == 0) {
2069		✗	ret = copy_tls_opts_dict(rt, &proto_opts);
2070		✗	if (ret < 0) {
2071		✗	av_dict_free(&proto_opts);
2072		✗	err = ret;
2073		✗	goto fail;
2074			}
2075			}
2076
2077		✗	ff_url_join(tcpname, sizeof(tcpname), lower_rtsp_proto, NULL,
2078			host, port,
2079			"?timeout=%"PRId64, rt->stimeout);
2080		✗	if ((ret = ffurl_open_whitelist(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
2081		✗	&s->interrupt_callback, &proto_opts, s->protocol_whitelist, s->protocol_blacklist, NULL)) < 0) {
2082		✗	av_dict_free(&proto_opts);
2083		✗	err = ret;
2084		✗	goto fail;
2085			}
2086		✗	av_dict_free(&proto_opts);
2087		✗	rt->rtsp_hd_out = rt->rtsp_hd;
2088			}
2089		✗	rt->seq = 0;
2090
2091		✗	tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
2092		✗	if (tcp_fd < 0) {
2093		✗	err = tcp_fd;
2094		✗	goto fail;
2095			}
2096		✗	if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
2097		✗	getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
2098			NULL, 0, NI_NUMERICHOST);
2099			}
2100
2101			/* request options supported by the server; this also detects server
2102			* type */
2103		✗	if (rt->server_type != RTSP_SERVER_SATIP)
2104		✗	rt->server_type = RTSP_SERVER_RTP;
2105			for (;;) {
2106		✗	cmd[0] = 0;
2107		✗	if (rt->server_type == RTSP_SERVER_REAL)
2108		✗	av_strlcat(cmd,
2109			/*
2110			* The following entries are required for proper
2111			* streaming from a Realmedia server. They are
2112			* interdependent in some way although we currently
2113			* don't quite understand how. Values were copied
2114			* from mplayer SVN r23589.
2115			* ClientChallenge is a 16-byte ID in hex
2116			* CompanyID is a 16-byte ID in base64
2117			*/
2118			"ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
2119			"PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
2120			"CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
2121			"GUID: 00000000-0000-0000-0000-000000000000\r\n",
2122			sizeof(cmd));
2123		✗	ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
2124		✗	if (reply->status_code != RTSP_STATUS_OK) {
2125		✗	err = ff_rtsp_averror(reply->status_code, AVERROR_INVALIDDATA);
2126		✗	goto fail;
2127			}
2128
2129			/* detect server type if not standard-compliant RTP */
2130		✗	if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
2131		✗	rt->server_type = RTSP_SERVER_REAL;
2132		✗	continue;
2133		✗	} else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
2134		✗	rt->server_type = RTSP_SERVER_WMS;
2135		✗	} else if (rt->server_type == RTSP_SERVER_REAL)
2136		✗	strcpy(real_challenge, reply->real_challenge);
2137		✗	break;
2138			}
2139
2140			#if CONFIG_RTSP_DEMUXER
2141		✗	if (s->iformat) {
2142		✗	if (rt->server_type == RTSP_SERVER_SATIP)
2143		✗	err = init_satip_stream(s);
2144			else
2145		✗	err = ff_rtsp_setup_input_streams(s, reply);
2146			} else
2147			#endif
2148			if (CONFIG_RTSP_MUXER)
2149		✗	err = ff_rtsp_setup_output_streams(s, host);
2150			else
2151			av_unreachable("Either muxer or demuxer must be enabled");
2152		✗	if (err)
2153		✗	goto fail;
2154
2155			do {
2156		✗	int lower_transport = ff_log2_tab[lower_transport_mask &
2157		✗	~(lower_transport_mask - 1)];
2158
2159		✗	if ((lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_TCP))
2160		✗	&& (rt->rtsp_flags & RTSP_FLAG_PREFER_TCP))
2161		✗	lower_transport = RTSP_LOWER_TRANSPORT_TCP;
2162
2163		✗	err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2164		✗	rt->server_type == RTSP_SERVER_REAL ?
2165			real_challenge : NULL);
2166		✗	if (err < 0)
2167		✗	goto fail;
2168		✗	lower_transport_mask &= ~(1 << lower_transport);
2169		✗	if (lower_transport_mask == 0 && err == 1) {
2170		✗	err = AVERROR(EPROTONOSUPPORT);
2171		✗	goto fail;
2172			}
2173		✗	} while (err);
2174
2175		✗	rt->lower_transport_mask = lower_transport_mask;
2176		✗	av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
2177		✗	rt->state = RTSP_STATE_IDLE;
2178		✗	rt->seek_timestamp = 0; /* default is to start stream at position zero */
2179		✗	return 0;
2180		✗	fail:
2181		✗	ff_rtsp_close_streams(s);
2182		✗	ff_rtsp_close_connections(s);
2183		✗	if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
2184		✗	int ret = ff_format_check_set_url(s, reply->location);
2185		✗	if (ret < 0) {
2186		✗	err = ret;
2187		✗	goto fail2;
2188			}
2189		✗	rt->session_id[0] = '\0';
2190		✗	av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
2191		✗	reply->status_code,
2192			s->url);
2193		✗	goto redirect;
2194			}
2195		✗	fail2:
2196		✗	ff_network_close();
2197		✗	return err;
2198			}
2199			#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
2200
2201			#if CONFIG_RTPDEC
2202			#if CONFIG_RTSP_DEMUXER
2203		✗	static int parse_rtsp_message(AVFormatContext *s)
2204			{
2205		✗	RTSPState *rt = s->priv_data;
2206			int ret;
2207
2208		✗	if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
2209		✗	if (rt->state == RTSP_STATE_STREAMING) {
2210		✗	return ff_rtsp_parse_streaming_commands(s);
2211			} else
2212		✗	return AVERROR_EOF;
2213			} else {
2214			RTSPMessageHeader reply;
2215		✗	ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
2216		✗	if (ret < 0)
2217		✗	return ret;
2218			/* XXX: parse message */
2219		✗	if (rt->state != RTSP_STATE_STREAMING)
2220		✗	return 0;
2221			}
2222
2223		✗	return 0;
2224			}
2225			#endif
2226
2227		✗	static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
2228			uint8_t *buf, int buf_size, int64_t wait_end)
2229			{
2230		✗	RTSPState *rt = s->priv_data;
2231			RTSPStream *rtsp_st;
2232			int n, i, ret;
2233		✗	struct pollfd *p = rt->p;
2234		✗	int *fds = NULL, fdsnum, fdsidx;
2235		✗	int64_t runs = rt->stimeout / POLLING_TIME / 1000;
2236
2237		✗	if (!p) {
2238		✗	p = rt->p = av_malloc_array(2 * rt->nb_rtsp_streams + 1, sizeof(*p));
2239		✗	if (!p)
2240		✗	return AVERROR(ENOMEM);
2241
2242		✗	if (rt->rtsp_hd) {
2243		✗	p[rt->max_p].fd = ffurl_get_file_handle(rt->rtsp_hd);
2244		✗	p[rt->max_p++].events = POLLIN;
2245			}
2246		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2247		✗	rtsp_st = rt->rtsp_streams[i];
2248		✗	if (rtsp_st->rtp_handle) {
2249		✗	if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
2250			&fds, &fdsnum)) {
2251		✗	av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
2252		✗	return ret;
2253			}
2254		✗	if (fdsnum != 2) {
2255		✗	av_log(s, AV_LOG_ERROR,
2256			"Number of fds %d not supported\n", fdsnum);
2257		✗	av_freep(&fds);
2258		✗	return AVERROR_INVALIDDATA;
2259			}
2260		✗	for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
2261		✗	p[rt->max_p].fd = fds[fdsidx];
2262		✗	p[rt->max_p++].events = POLLIN;
2263			}
2264		✗	av_freep(&fds);
2265			}
2266			}
2267			}
2268
2269			for (;;) {
2270		✗	if (ff_check_interrupt(&s->interrupt_callback))
2271		✗	return AVERROR_EXIT;
2272		✗	if (wait_end && wait_end - av_gettime_relative() < 0)
2273		✗	return AVERROR(EAGAIN);
2274		✗	n = poll(p, rt->max_p, POLLING_TIME);
2275		✗	if (n > 0) {
2276		✗	int j = rt->rtsp_hd ? 1 : 0;
2277		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2278		✗	rtsp_st = rt->rtsp_streams[i];
2279		✗	if (rtsp_st->rtp_handle) {
2280		✗	if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
2281		✗	ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
2282		✗	if (ret > 0) {
2283		✗	*prtsp_st = rtsp_st;
2284		✗	return ret;
2285			}
2286			}
2287		✗	j+=2;
2288			}
2289			}
2290			#if CONFIG_RTSP_DEMUXER
2291		✗	if (rt->rtsp_hd && p[0].revents & POLLIN) {
2292		✗	if ((ret = parse_rtsp_message(s)) < 0) {
2293		✗	return ret;
2294			}
2295			}
2296			#endif
2297		✗	} else if (n == 0 && rt->stimeout > 0 && --runs <= 0) {
2298		✗	return AVERROR(ETIMEDOUT);
2299		✗	} else if (n < 0 && errno != EINTR)
2300		✗	return AVERROR(errno);
2301			}
2302			}
2303
2304		✗	static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
2305			const uint8_t *buf, int len)
2306			{
2307		✗	RTSPState *rt = s->priv_data;
2308			int i;
2309		✗	if (len < 0)
2310		✗	return len;
2311		✗	if (rt->nb_rtsp_streams == 1) {
2312		✗	*rtsp_st = rt->rtsp_streams[0];
2313		✗	return len;
2314			}
2315		✗	if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
2316		✗	if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
2317		✗	int no_ssrc = 0;
2318		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2319		✗	RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2320		✗	if (!rtpctx)
2321		✗	continue;
2322		✗	if (rtpctx->ssrc == AV_RB32(&buf[4])) {
2323		✗	*rtsp_st = rt->rtsp_streams[i];
2324		✗	return len;
2325			}
2326		✗	if (!rtpctx->ssrc)
2327		✗	no_ssrc = 1;
2328			}
2329		✗	if (no_ssrc) {
2330		✗	av_log(s, AV_LOG_WARNING,
2331			"Unable to pick stream for packet - SSRC not known for "
2332			"all streams\n");
2333		✗	return AVERROR(EAGAIN);
2334			}
2335			} else {
2336		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2337		✗	if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
2338		✗	*rtsp_st = rt->rtsp_streams[i];
2339		✗	return len;
2340			}
2341			}
2342			}
2343			}
2344		✗	av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
2345		✗	return AVERROR(EAGAIN);
2346			}
2347
2348		✗	static int read_packet(AVFormatContext *s,
2349			RTSPStream **rtsp_st, RTSPStream *first_queue_st,
2350			int64_t wait_end)
2351			{
2352		✗	RTSPState *rt = s->priv_data;
2353			int len;
2354
2355		✗	switch(rt->lower_transport) {
2356		✗	default:
2357			#if CONFIG_RTSP_DEMUXER
2358			case RTSP_LOWER_TRANSPORT_TCP:
2359		✗	len = ff_rtsp_tcp_read_packet(s, rtsp_st, rt->recvbuf, RECVBUF_SIZE);
2360		✗	break;
2361			#endif
2362		✗	case RTSP_LOWER_TRANSPORT_UDP:
2363			case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
2364		✗	len = udp_read_packet(s, rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2365		✗	if (len > 0 && (*rtsp_st)->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2366		✗	ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, (*rtsp_st)->rtp_handle, NULL, len);
2367		✗	break;
2368		✗	case RTSP_LOWER_TRANSPORT_CUSTOM:
2369		✗	if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
2370		✗	wait_end && wait_end < av_gettime_relative())
2371		✗	len = AVERROR(EAGAIN);
2372			else
2373		✗	len = avio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
2374		✗	len = pick_stream(s, rtsp_st, rt->recvbuf, len);
2375		✗	if (len > 0 && (*rtsp_st)->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
2376		✗	ff_rtp_check_and_send_back_rr((*rtsp_st)->transport_priv, NULL, s->pb, len);
2377		✗	break;
2378			}
2379
2380		✗	if (len == 0)
2381		✗	return AVERROR_EOF;
2382
2383		✗	return len;
2384			}
2385
2386		✗	int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
2387			{
2388		✗	RTSPState *rt = s->priv_data;
2389			int ret, len;
2390		✗	RTSPStream *rtsp_st, *first_queue_st = NULL;
2391		✗	int64_t wait_end = 0;
2392
2393		✗	if (rt->nb_byes == rt->nb_rtsp_streams)
2394		✗	return AVERROR_EOF;
2395
2396			/* get next frames from the same RTP packet */
2397		✗	if (rt->cur_transport_priv) {
2398		✗	if (rt->transport == RTSP_TRANSPORT_RDT) {
2399		✗	ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2400		✗	} else if (rt->transport == RTSP_TRANSPORT_RTP) {
2401		✗	ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
2402		✗	} else if (CONFIG_RTPDEC && rt->ts) {
2403		✗	ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
2404		✗	if (ret >= 0) {
2405		✗	rt->recvbuf_pos += ret;
2406		✗	ret = rt->recvbuf_pos < rt->recvbuf_len;
2407			}
2408			} else
2409		✗	ret = -1;
2410		✗	if (ret == 0) {
2411		✗	rt->cur_transport_priv = NULL;
2412		✗	return 0;
2413		✗	} else if (ret == 1) {
2414		✗	return 0;
2415			} else
2416		✗	rt->cur_transport_priv = NULL;
2417			}
2418
2419		✗	redo:
2420		✗	if (rt->transport == RTSP_TRANSPORT_RTP) {
2421			int i;
2422		✗	int64_t first_queue_time = 0;
2423		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2424		✗	RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
2425			int64_t queue_time;
2426		✗	if (!rtpctx)
2427		✗	continue;
2428		✗	queue_time = ff_rtp_queued_packet_time(rtpctx);
2429		✗	if (queue_time && (queue_time - first_queue_time < 0 ||
2430			!first_queue_time)) {
2431		✗	first_queue_time = queue_time;
2432		✗	first_queue_st = rt->rtsp_streams[i];
2433			}
2434			}
2435		✗	if (first_queue_time) {
2436		✗	wait_end = first_queue_time + s->max_delay;
2437			} else {
2438		✗	wait_end = 0;
2439		✗	first_queue_st = NULL;
2440			}
2441			}
2442
2443			/* read next RTP packet */
2444		✗	if (!rt->recvbuf) {
2445		✗	rt->recvbuf = av_malloc(RECVBUF_SIZE);
2446		✗	if (!rt->recvbuf)
2447		✗	return AVERROR(ENOMEM);
2448			}
2449
2450		✗	len = read_packet(s, &rtsp_st, first_queue_st, wait_end);
2451		✗	if (len == AVERROR(EAGAIN) && first_queue_st &&
2452		✗	rt->transport == RTSP_TRANSPORT_RTP) {
2453		✗	av_log(s, AV_LOG_WARNING,
2454			"max delay reached. need to consume packet\n");
2455		✗	rtsp_st = first_queue_st;
2456		✗	ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
2457		✗	goto end;
2458			}
2459		✗	if (len < 0)
2460		✗	return len;
2461
2462		✗	if (rt->transport == RTSP_TRANSPORT_RDT) {
2463		✗	ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2464		✗	} else if (rt->transport == RTSP_TRANSPORT_RTP) {
2465		✗	ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2466		✗	if (rtsp_st->feedback) {
2467		✗	AVIOContext *pb = NULL;
2468		✗	if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
2469		✗	pb = s->pb;
2470		✗	ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
2471			}
2472		✗	if (ret < 0) {
2473			/* Either bad packet, or a RTCP packet. Check if the
2474			* first_rtcp_ntp_time field was initialized. */
2475		✗	RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
2476		✗	if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
2477			/* first_rtcp_ntp_time has been initialized for this stream,
2478			* copy the same value to all other uninitialized streams,
2479			* in order to map their timestamp origin to the same ntp time
2480			* as this one. */
2481			int i;
2482		✗	AVStream *st = NULL;
2483		✗	if (rtsp_st->stream_index >= 0)
2484		✗	st = s->streams[rtsp_st->stream_index];
2485		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2486		✗	RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
2487		✗	AVStream *st2 = NULL;
2488		✗	if (rt->rtsp_streams[i]->stream_index >= 0)
2489		✗	st2 = s->streams[rt->rtsp_streams[i]->stream_index];
2490		✗	if (rtpctx2 && st && st2 &&
2491		✗	rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2492		✗	rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
2493		✗	rtpctx2->rtcp_ts_offset = av_rescale_q(
2494			rtpctx->rtcp_ts_offset, st->time_base,
2495			st2->time_base);
2496			}
2497			}
2498			// Make real NTP start time available in AVFormatContext
2499		✗	if (s->start_time_realtime == AV_NOPTS_VALUE) {
2500		✗	s->start_time_realtime = ff_parse_ntp_time(rtpctx->first_rtcp_ntp_time) - NTP_OFFSET_US;
2501		✗	if (rtpctx->st) {
2502		✗	s->start_time_realtime -=
2503		✗	av_rescale_q (rtpctx->rtcp_ts_offset, rtpctx->st->time_base, AV_TIME_BASE_Q);
2504			}
2505			}
2506			}
2507		✗	if (ret == -RTCP_BYE) {
2508		✗	rt->nb_byes++;
2509
2510		✗	av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
2511		✗	rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
2512
2513		✗	if (rt->nb_byes == rt->nb_rtsp_streams)
2514		✗	return AVERROR_EOF;
2515			}
2516			}
2517		✗	} else if (CONFIG_RTPDEC && rt->ts) {
2518		✗	ret = avpriv_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2519		✗	if (ret >= 0) {
2520		✗	if (ret < len) {
2521		✗	rt->recvbuf_len = len;
2522		✗	rt->recvbuf_pos = ret;
2523		✗	rt->cur_transport_priv = rt->ts;
2524		✗	return 1;
2525			} else {
2526		✗	ret = 0;
2527			}
2528			}
2529			} else {
2530		✗	return AVERROR_INVALIDDATA;
2531			}
2532		✗	end:
2533		✗	if (ret < 0)
2534		✗	goto redo;
2535		✗	if (ret == 1)
2536			/* more packets may follow, so we save the RTP context */
2537		✗	rt->cur_transport_priv = rtsp_st->transport_priv;
2538
2539		✗	return ret;
2540			}
2541			#endif /* CONFIG_RTPDEC */
2542
2543			#if CONFIG_SDP_DEMUXER
2544		7500	static int sdp_probe(const AVProbeData *p1)
2545			{
2546		7500	const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
2547
2548			/* we look for a line beginning "c=IN IP" */
2549	3/4 ✓ Branch 0 taken 599677 times. ✗ Branch 1 not taken. ✓ Branch 2 taken 595473 times. ✓ Branch 3 taken 4204 times.	599677	while (p < p_end && *p != '\0') {
2550	3/4 ✓ Branch 0 taken 595333 times. ✓ Branch 1 taken 140 times. ✗ Branch 2 not taken. ✓ Branch 3 taken 595333 times.	1190806	if (sizeof("c=IN IP") - 1 < p_end - p &&
2551		595333	av_strstart(p, "c=IN IP", NULL))
2552		✗	return AVPROBE_SCORE_EXTENSION;
2553
2554	4/4 ✓ Branch 0 taken 96733460 times. ✓ Branch 1 taken 3296 times. ✓ Branch 2 taken 96141283 times. ✓ Branch 3 taken 592177 times.	96736756	while (p < p_end - 1 && *p != '\n') p++;
2555	2/2 ✓ Branch 0 taken 3296 times. ✓ Branch 1 taken 592177 times.	595473	if (++p >= p_end)
2556		3296	break;
2557	2/2 ✓ Branch 0 taken 3507 times. ✓ Branch 1 taken 588670 times.	592177	if (*p == '\r')
2558		3507	p++;
2559			}
2560		7500	return 0;
2561			}
2562
2563		✗	static void append_source_addrs(char *buf, int size, const char *name,
2564			int count, struct RTSPSource **addrs)
2565			{
2566			int i;
2567		✗	if (!count)
2568		✗	return;
2569		✗	av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr);
2570		✗	for (i = 1; i < count; i++)
2571		✗	av_strlcatf(buf, size, ",%s", addrs[i]->addr);
2572			}
2573
2574		✗	static int sdp_read_header(AVFormatContext *s)
2575			{
2576		✗	RTSPState *rt = s->priv_data;
2577			RTSPStream *rtsp_st;
2578			int i, err;
2579			char url[MAX_URL_SIZE];
2580			AVBPrint bp;
2581
2582		✗	if (!ff_network_init())
2583		✗	return AVERROR(EIO);
2584
2585		✗	if (s->max_delay < 0) /* Not set by the caller */
2586		✗	s->max_delay = DEFAULT_REORDERING_DELAY;
2587		✗	if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2588		✗	rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
2589
2590			/* read the whole sdp file */
2591		✗	av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
2592		✗	err = avio_read_to_bprint(s->pb, &bp, INT_MAX);
2593		✗	if (err < 0 ) {
2594		✗	ff_network_close();
2595		✗	av_bprint_finalize(&bp, NULL);
2596		✗	return err;
2597			}
2598		✗	err = ff_sdp_parse(s, bp.str);
2599		✗	av_bprint_finalize(&bp, NULL);
2600		✗	if (err) goto fail;
2601
2602			/* open each RTP stream */
2603		✗	for (i = 0; i < rt->nb_rtsp_streams; i++) {
2604			char namebuf[50];
2605		✗	rtsp_st = rt->rtsp_streams[i];
2606
2607		✗	if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2608		✗	AVDictionary *opts = map_to_opts(rt);
2609			char buf[MAX_URL_SIZE];
2610			const char *p;
2611
2612		✗	err = getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip,
2613			sizeof(rtsp_st->sdp_ip),
2614			namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2615		✗	if (err) {
2616		✗	av_log(s, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(err));
2617		✗	err = AVERROR(EIO);
2618		✗	av_dict_free(&opts);
2619		✗	goto fail;
2620			}
2621		✗	ff_url_join(url, sizeof(url), "rtp", NULL,
2622			namebuf, rtsp_st->sdp_port,
2623			"?localrtpport=%d&ttl=%d&connect=%d&write_to_source=%d",
2624			rtsp_st->sdp_port, rtsp_st->sdp_ttl,
2625		✗	rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0,
2626		✗	rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0);
2627
2628		✗	p = strchr(s->url, '?');
2629		✗	if (p && av_find_info_tag(buf, sizeof(buf), "localaddr", p))
2630		✗	av_strlcatf(url, sizeof(url), "&localaddr=%s", buf);
2631		✗	else if (rt->localaddr && rt->localaddr[0])
2632		✗	av_strlcatf(url, sizeof(url), "&localaddr=%s", rt->localaddr);
2633		✗	append_source_addrs(url, sizeof(url), "sources",
2634			rtsp_st->nb_include_source_addrs,
2635			rtsp_st->include_source_addrs);
2636		✗	append_source_addrs(url, sizeof(url), "block",
2637			rtsp_st->nb_exclude_source_addrs,
2638			rtsp_st->exclude_source_addrs);
2639		✗	err = ffurl_open_whitelist(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ,
2640		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
2641
2642		✗	av_dict_free(&opts);
2643
2644		✗	if (err < 0) {
2645		✗	err = AVERROR_INVALIDDATA;
2646		✗	goto fail;
2647			}
2648			}
2649		✗	if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
2650		✗	goto fail;
2651			}
2652		✗	return 0;
2653		✗	fail:
2654		✗	ff_rtsp_close_streams(s);
2655		✗	ff_network_close();
2656		✗	return err;
2657			}
2658
2659		✗	static int sdp_read_close(AVFormatContext *s)
2660			{
2661		✗	ff_rtsp_close_streams(s);
2662		✗	ff_network_close();
2663		✗	return 0;
2664			}
2665
2666			static const AVClass sdp_demuxer_class = {
2667			.class_name = "SDP demuxer",
2668			.item_name = av_default_item_name,
2669			.option = sdp_options,
2670			.version = LIBAVUTIL_VERSION_INT,
2671			};
2672
2673			const FFInputFormat ff_sdp_demuxer = {
2674			.p.name = "sdp",
2675			.p.long_name = NULL_IF_CONFIG_SMALL("SDP"),
2676			.p.priv_class = &sdp_demuxer_class,
2677			.priv_data_size = sizeof(RTSPState),
2678			.read_probe = sdp_probe,
2679			.read_header = sdp_read_header,
2680			.read_packet = ff_rtsp_fetch_packet,
2681			.read_close = sdp_read_close,
2682			};
2683			#endif /* CONFIG_SDP_DEMUXER */
2684
2685			#if CONFIG_RTP_DEMUXER
2686		3996	static int rtp_probe(const AVProbeData *p)
2687			{
2688	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 3996 times.	3996	if (av_strstart(p->filename, "rtp:", NULL))
2689		✗	return AVPROBE_SCORE_MAX;
2690		3996	return 0;
2691			}
2692
2693		✗	static int rtp_read_header(AVFormatContext *s)
2694			{
2695			uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
2696			char host[500], filters_buf[1000];
2697			int ret, port;
2698		✗	URLContext* in = NULL;
2699			int payload_type;
2700		✗	AVCodecParameters *par = NULL;
2701			struct sockaddr_storage addr;
2702			FFIOContext pb;
2703		✗	socklen_t addrlen = sizeof(addr);
2704		✗	RTSPState *rt = s->priv_data;
2705			const char *p;
2706			AVBPrint sdp;
2707		✗	AVDictionary *opts = NULL;
2708
2709		✗	if (!ff_network_init())
2710		✗	return AVERROR(EIO);
2711
2712		✗	opts = map_to_opts(rt);
2713		✗	ret = ffurl_open_whitelist(&in, s->url, AVIO_FLAG_READ,
2714		✗	&s->interrupt_callback, &opts, s->protocol_whitelist, s->protocol_blacklist, NULL);
2715		✗	av_dict_free(&opts);
2716		✗	if (ret)
2717		✗	goto fail;
2718
2719			while (1) {
2720		✗	ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
2721		✗	if (ret == AVERROR(EAGAIN))
2722		✗	continue;
2723		✗	if (ret < 0)
2724		✗	goto fail;
2725		✗	if (ret < 12) {
2726		✗	av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2727		✗	continue;
2728			}
2729
2730		✗	if ((recvbuf[0] & 0xc0) != 0x80) {
2731		✗	av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2732			"received\n");
2733		✗	continue;
2734			}
2735
2736		✗	if (RTP_PT_IS_RTCP(recvbuf[1]))
2737		✗	continue;
2738
2739		✗	payload_type = recvbuf[1] & 0x7f;
2740		✗	break;
2741			}
2742		✗	getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
2743		✗	ffurl_closep(&in);
2744
2745		✗	par = avcodec_parameters_alloc();
2746		✗	if (!par) {
2747		✗	ret = AVERROR(ENOMEM);
2748		✗	goto fail;
2749			}
2750
2751		✗	if (ff_rtp_get_codec_info(par, payload_type)) {
2752		✗	av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2753			"without an SDP file describing it\n",
2754			payload_type);
2755		✗	ret = AVERROR_INVALIDDATA;
2756		✗	goto fail;
2757			}
2758		✗	if (par->codec_type != AVMEDIA_TYPE_DATA) {
2759		✗	av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2760			"properly you need an SDP file "
2761			"describing it\n");
2762			}
2763
2764		✗	av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2765		✗	NULL, 0, s->url);
2766
2767		✗	av_bprint_init(&sdp, 0, AV_BPRINT_SIZE_UNLIMITED);
2768		✗	av_bprintf(&sdp, "v=0\r\nc=IN IP%d %s\r\n",
2769		✗	addr.ss_family == AF_INET ? 4 : 6, host);
2770
2771		✗	p = strchr(s->url, '?');
2772		✗	if (p) {
2773			static const char filters[][2][8] = { { "sources", "incl" },
2774			{ "block", "excl" } };
2775			int i;
2776			char *q;
2777		✗	for (i = 0; i < FF_ARRAY_ELEMS(filters); i++) {
2778		✗	if (av_find_info_tag(filters_buf, sizeof(filters_buf), filters[i][0], p)) {
2779		✗	q = filters_buf;
2780		✗	while ((q = strchr(q, ',')) != NULL)
2781		✗	*q = ' ';
2782		✗	av_bprintf(&sdp, "a=source-filter:%s IN IP%d %s %s\r\n",
2783		✗	filters[i][1],
2784		✗	addr.ss_family == AF_INET ? 4 : 6, host,
2785			filters_buf);
2786			}
2787			}
2788			}
2789
2790		✗	av_bprintf(&sdp, "m=%s %d RTP/AVP %d\r\n",
2791		✗	par->codec_type == AVMEDIA_TYPE_DATA ? "application" :
2792		✗	par->codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2793			port, payload_type);
2794		✗	av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp.str);
2795		✗	if (!av_bprint_is_complete(&sdp))
2796		✗	goto fail_nobuf;
2797		✗	avcodec_parameters_free(&par);
2798
2799		✗	ffio_init_read_context(&pb, sdp.str, sdp.len);
2800		✗	s->pb = &pb.pub;
2801
2802			/* if sdp_read_header() fails then following ff_network_close() cancels out */
2803			/* ff_network_init() at the start of this function. Otherwise it cancels out */
2804			/* ff_network_init() inside sdp_read_header() */
2805		✗	ff_network_close();
2806
2807		✗	rt->media_type_mask = (1 << (AVMEDIA_TYPE_SUBTITLE+1)) - 1;
2808
2809		✗	ret = sdp_read_header(s);
2810		✗	s->pb = NULL;
2811		✗	av_bprint_finalize(&sdp, NULL);
2812		✗	return ret;
2813
2814		✗	fail_nobuf:
2815		✗	ret = AVERROR(ENOMEM);
2816		✗	av_log(s, AV_LOG_ERROR, "rtp_read_header(): not enough buffer space for sdp-headers\n");
2817		✗	av_bprint_finalize(&sdp, NULL);
2818		✗	fail:
2819		✗	avcodec_parameters_free(&par);
2820		✗	ffurl_closep(&in);
2821		✗	ff_network_close();
2822		✗	return ret;
2823			}
2824
2825			static const AVClass rtp_demuxer_class = {
2826			.class_name = "RTP demuxer",
2827			.item_name = av_default_item_name,
2828			.option = rtp_options,
2829			.version = LIBAVUTIL_VERSION_INT,
2830			};
2831
2832			const FFInputFormat ff_rtp_demuxer = {
2833			.p.name = "rtp",
2834			.p.long_name = NULL_IF_CONFIG_SMALL("RTP input"),
2835			.p.flags = AVFMT_NOFILE,
2836			.p.priv_class = &rtp_demuxer_class,
2837			.priv_data_size = sizeof(RTSPState),
2838			.read_probe = rtp_probe,
2839			.read_header = rtp_read_header,
2840			.read_packet = ff_rtsp_fetch_packet,
2841			.read_close = sdp_read_close,
2842			};
2843			#endif /* CONFIG_RTP_DEMUXER */
2844