FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* RTMP network protocol
3			* Copyright (c) 2009 Konstantin Shishkov
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			/**
23			* @file
24			* RTMP protocol
25			*/
26
27			#include "config_components.h"
28
29			#include "libavcodec/bytestream.h"
30			#include "libavutil/avstring.h"
31			#include "libavutil/base64.h"
32			#include "libavutil/intfloat.h"
33			#include "libavutil/lfg.h"
34			#include "libavutil/md5.h"
35			#include "libavutil/mem.h"
36			#include "libavutil/opt.h"
37			#include "libavutil/random_seed.h"
38			#include "avformat.h"
39			#include "internal.h"
40
41			#include "network.h"
42
43			#include "flv.h"
44			#include "rtmp.h"
45			#include "rtmpcrypt.h"
46			#include "rtmppkt.h"
47			#include "url.h"
48			#include "version.h"
49
50			#if CONFIG_ZLIB
51			#include <zlib.h>
52			#endif
53
54			#define APP_MAX_LENGTH 1024
55			#define TCURL_MAX_LENGTH 1024
56			#define FLASHVER_MAX_LENGTH 64
57			#define RTMP_PKTDATA_DEFAULT_SIZE 4096
58			#define RTMP_HEADER 11
59
60			/** RTMP protocol handler state */
61			typedef enum {
62			STATE_START, ///< client has not done anything yet
63			STATE_HANDSHAKED, ///< client has performed handshake
64			STATE_FCPUBLISH, ///< client FCPublishing stream (for output)
65			STATE_PLAYING, ///< client has started receiving multimedia data from server
66			STATE_SEEKING, ///< client has started the seek operation. Back on STATE_PLAYING when the time comes
67			STATE_PUBLISHING, ///< client has started sending multimedia data to server (for output)
68			STATE_RECEIVING, ///< received a publish command (for input)
69			STATE_SENDING, ///< received a play command (for output)
70			STATE_STOPPED, ///< the broadcast has been stopped
71			} ClientState;
72
73			typedef struct TrackedMethod {
74			char *name;
75			int id;
76			} TrackedMethod;
77
78			/** protocol handler context */
79			typedef struct RTMPContext {
80			const AVClass *class;
81			URLContext* stream; ///< TCP stream used in interactions with RTMP server
82			RTMPPacket *prev_pkt[2]; ///< packet history used when reading and sending packets ([0] for reading, [1] for writing)
83			int nb_prev_pkt[2]; ///< number of elements in prev_pkt
84			int in_chunk_size; ///< size of the chunks incoming RTMP packets are divided into
85			int out_chunk_size; ///< size of the chunks outgoing RTMP packets are divided into
86			int is_input; ///< input/output flag
87			char *playpath; ///< stream identifier to play (with possible "mp4:" prefix)
88			int live; ///< 0: recorded, -1: live, -2: both
89			char *app; ///< name of application
90			char *conn; ///< append arbitrary AMF data to the Connect message
91			ClientState state; ///< current state
92			int stream_id; ///< ID assigned by the server for the stream
93			uint8_t* flv_data; ///< buffer with data for demuxer
94			int flv_size; ///< current buffer size
95			int flv_off; ///< number of bytes read from current buffer
96			int flv_nb_packets; ///< number of flv packets published
97			RTMPPacket out_pkt; ///< rtmp packet, created from flv a/v or metadata (for output)
98			uint32_t receive_report_size; ///< number of bytes after which we should report the number of received bytes to the peer
99			uint64_t bytes_read; ///< number of bytes read from server
100			uint64_t last_bytes_read; ///< number of bytes read last reported to server
101			uint32_t last_timestamp; ///< last timestamp received in a packet
102			int skip_bytes; ///< number of bytes to skip from the input FLV stream in the next write call
103			int has_audio; ///< presence of audio data
104			int has_video; ///< presence of video data
105			int received_metadata; ///< Indicates if we have received metadata about the streams
106			uint8_t flv_header[RTMP_HEADER]; ///< partial incoming flv packet header
107			int flv_header_bytes; ///< number of initialized bytes in flv_header
108			int nb_invokes; ///< keeps track of invoke messages
109			char* tcurl; ///< url of the target stream
110			char* flashver; ///< version of the flash plugin
111			char* swfhash; ///< SHA256 hash of the decompressed SWF file (32 bytes)
112			int swfhash_len; ///< length of the SHA256 hash
113			int swfsize; ///< size of the decompressed SWF file
114			char* swfurl; ///< url of the swf player
115			char* swfverify; ///< URL to player swf file, compute hash/size automatically
116			char swfverification[42]; ///< hash of the SWF verification
117			char* pageurl; ///< url of the web page
118			char* subscribe; ///< name of live stream to subscribe
119			int max_sent_unacked; ///< max unacked sent bytes
120			int client_buffer_time; ///< client buffer time in ms
121			int flush_interval; ///< number of packets flushed in the same request (RTMPT only)
122			int encrypted; ///< use an encrypted connection (RTMPE only)
123			TrackedMethod*tracked_methods; ///< tracked methods buffer
124			int nb_tracked_methods; ///< number of tracked methods
125			int tracked_methods_size; ///< size of the tracked methods buffer
126			int listen; ///< listen mode flag
127			int listen_timeout; ///< listen timeout to wait for new connections
128			int nb_streamid; ///< The next stream id to return on createStream calls
129			double duration; ///< Duration of the stream in seconds as returned by the server (only valid if non-zero)
130			int tcp_nodelay; ///< Use TCP_NODELAY to disable Nagle's algorithm if set to 1
131			char *enhanced_codecs; ///< codec list in enhanced rtmp
132			char username[50];
133			char password[50];
134			char auth_params[500];
135			int do_reconnect;
136			int auth_tried;
137			} RTMPContext;
138
139			#define PLAYER_KEY_OPEN_PART_LEN 30 ///< length of partial key used for first client digest signing
140			/** Client key used for digest signing */
141			static const uint8_t rtmp_player_key[] = {
142			'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ',
143			'F', 'l', 'a', 's', 'h', ' ', 'P', 'l', 'a', 'y', 'e', 'r', ' ', '0', '0', '1',
144
145			0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02,
146			0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8,
147			0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE
148			};
149
150			#define SERVER_KEY_OPEN_PART_LEN 36 ///< length of partial key used for first server digest signing
151			/** Key used for RTMP server digest signing */
152			static const uint8_t rtmp_server_key[] = {
153			'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ',
154			'F', 'l', 'a', 's', 'h', ' ', 'M', 'e', 'd', 'i', 'a', ' ',
155			'S', 'e', 'r', 'v', 'e', 'r', ' ', '0', '0', '1',
156
157			0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02,
158			0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8,
159			0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE
160			};
161
162			static int handle_chunk_size(URLContext *s, RTMPPacket *pkt);
163			static int handle_window_ack_size(URLContext *s, RTMPPacket *pkt);
164			static int handle_set_peer_bw(URLContext *s, RTMPPacket *pkt);
165
166		✗	static size_t zstrlen(const char *c)
167			{
168		✗	if(c)
169		✗	return strlen(c);
170		✗	return 0;
171			}
172
173		✗	static int add_tracked_method(RTMPContext *rt, const char *name, int id)
174			{
175			int err;
176
177		✗	if (rt->nb_tracked_methods + 1 > rt->tracked_methods_size) {
178		✗	rt->tracked_methods_size = (rt->nb_tracked_methods + 1) * 2;
179		✗	if ((err = av_reallocp_array(&rt->tracked_methods, rt->tracked_methods_size,
180			sizeof(*rt->tracked_methods))) < 0) {
181		✗	rt->nb_tracked_methods = 0;
182		✗	rt->tracked_methods_size = 0;
183		✗	return err;
184			}
185			}
186
187		✗	rt->tracked_methods[rt->nb_tracked_methods].name = av_strdup(name);
188		✗	if (!rt->tracked_methods[rt->nb_tracked_methods].name)
189		✗	return AVERROR(ENOMEM);
190		✗	rt->tracked_methods[rt->nb_tracked_methods].id = id;
191		✗	rt->nb_tracked_methods++;
192
193		✗	return 0;
194			}
195
196		✗	static void del_tracked_method(RTMPContext *rt, int index)
197			{
198		✗	memmove(&rt->tracked_methods[index], &rt->tracked_methods[index + 1],
199		✗	sizeof(*rt->tracked_methods) * (rt->nb_tracked_methods - index - 1));
200		✗	rt->nb_tracked_methods--;
201		✗	}
202
203		✗	static int find_tracked_method(URLContext *s, RTMPPacket *pkt, int offset,
204			char **tracked_method)
205			{
206		✗	RTMPContext *rt = s->priv_data;
207			GetByteContext gbc;
208			double pkt_id;
209			int ret;
210			int i;
211
212		✗	bytestream2_init(&gbc, pkt->data + offset, pkt->size - offset);
213		✗	if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0)
214		✗	return ret;
215
216		✗	for (i = 0; i < rt->nb_tracked_methods; i++) {
217		✗	if (rt->tracked_methods[i].id != pkt_id)
218		✗	continue;
219
220		✗	*tracked_method = rt->tracked_methods[i].name;
221		✗	del_tracked_method(rt, i);
222		✗	break;
223			}
224
225		✗	return 0;
226			}
227
228		✗	static void free_tracked_methods(RTMPContext *rt)
229			{
230			int i;
231
232		✗	for (i = 0; i < rt->nb_tracked_methods; i ++)
233		✗	av_freep(&rt->tracked_methods[i].name);
234		✗	av_freep(&rt->tracked_methods);
235		✗	rt->tracked_methods_size = 0;
236		✗	rt->nb_tracked_methods = 0;
237		✗	}
238
239		✗	static int rtmp_send_packet(RTMPContext *rt, RTMPPacket *pkt, int track)
240			{
241			int ret;
242
243		✗	if (pkt->type == RTMP_PT_INVOKE && track) {
244			GetByteContext gbc;
245			char name[128];
246			double pkt_id;
247			int len;
248
249		✗	bytestream2_init(&gbc, pkt->data, pkt->size);
250		✗	if ((ret = ff_amf_read_string(&gbc, name, sizeof(name), &len)) < 0)
251		✗	goto fail;
252
253		✗	if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0)
254		✗	goto fail;
255
256		✗	if ((ret = add_tracked_method(rt, name, pkt_id)) < 0)
257		✗	goto fail;
258			}
259
260		✗	ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size,
261			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
262		✗	fail:
263		✗	ff_rtmp_packet_destroy(pkt);
264		✗	return ret;
265			}
266
267		✗	static int rtmp_write_amf_data(URLContext *s, char *param, uint8_t **p)
268			{
269			char *field, *value;
270			char type;
271
272			/* The type must be B for Boolean, N for number, S for string, O for
273			* object, or Z for null. For Booleans the data must be either 0 or 1 for
274			* FALSE or TRUE, respectively. Likewise for Objects the data must be
275			* 0 or 1 to end or begin an object, respectively. Data items in subobjects
276			* may be named, by prefixing the type with 'N' and specifying the name
277			* before the value (ie. NB:myFlag:1). This option may be used multiple times
278			* to construct arbitrary AMF sequences. */
279		✗	if (param[0] && param[1] == ':') {
280		✗	type = param[0];
281		✗	value = param + 2;
282		✗	} else if (param[0] == 'N' && param[1] && param[2] == ':') {
283		✗	type = param[1];
284		✗	field = param + 3;
285		✗	value = strchr(field, ':');
286		✗	if (!value)
287		✗	goto fail;
288		✗	*value = '\0';
289		✗	value++;
290
291		✗	ff_amf_write_field_name(p, field);
292			} else {
293		✗	goto fail;
294			}
295
296		✗	switch (type) {
297		✗	case 'B':
298		✗	ff_amf_write_bool(p, value[0] != '0');
299		✗	break;
300		✗	case 'S':
301		✗	ff_amf_write_string(p, value);
302		✗	break;
303		✗	case 'N':
304		✗	ff_amf_write_number(p, strtod(value, NULL));
305		✗	break;
306		✗	case 'Z':
307		✗	ff_amf_write_null(p);
308		✗	break;
309		✗	case 'O':
310		✗	if (value[0] != '0')
311		✗	ff_amf_write_object_start(p);
312			else
313		✗	ff_amf_write_object_end(p);
314		✗	break;
315		✗	default:
316		✗	goto fail;
317			break;
318			}
319
320		✗	return 0;
321
322		✗	fail:
323		✗	av_log(s, AV_LOG_ERROR, "Invalid AMF parameter: %s\n", param);
324		✗	return AVERROR(EINVAL);
325			}
326
327			/**
328			* Generate 'connect' call and send it to the server.
329			*/
330		✗	static int gen_connect(URLContext *s, RTMPContext *rt)
331			{
332			RTMPPacket pkt;
333			uint8_t *p;
334			int ret;
335
336		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
337			0, 4096 + APP_MAX_LENGTH
338		✗	+ strlen(rt->auth_params) + strlen(rt->flashver)
339		✗	+ zstrlen(rt->enhanced_codecs)/5*7
340		✗	+ zstrlen(rt->swfurl)
341		✗	+ zstrlen(rt->swfverify)
342		✗	+ zstrlen(rt->tcurl)
343		✗	+ zstrlen(rt->auth_params)
344		✗	+ zstrlen(rt->pageurl)
345		✗	+ zstrlen(rt->conn)*3
346			)) < 0)
347		✗	return ret;
348
349		✗	p = pkt.data;
350
351		✗	ff_amf_write_string(&p, "connect");
352		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
353		✗	ff_amf_write_object_start(&p);
354		✗	ff_amf_write_field_name(&p, "app");
355		✗	ff_amf_write_string2(&p, rt->app, rt->auth_params);
356
357		✗	if (rt->enhanced_codecs) {
358		✗	uint32_t list_len = 0;
359		✗	char *fourcc_data = rt->enhanced_codecs;
360		✗	int fourcc_str_len = strlen(fourcc_data);
361
362			// check the string, fourcc + ',' + ... + end fourcc correct length should be (4+1)*n+4
363		✗	if ((fourcc_str_len + 1) % 5 != 0) {
364		✗	av_log(s, AV_LOG_ERROR, "Malformed rtmp_enhanched_codecs, "
365			"should be of the form hvc1[,av01][,vp09][,vvc1][,...]\n");
366		✗	ff_rtmp_packet_destroy(&pkt);
367		✗	return AVERROR(EINVAL);
368			}
369
370		✗	list_len = (fourcc_str_len + 1) / 5;
371		✗	ff_amf_write_field_name(&p, "fourCcList");
372		✗	ff_amf_write_array_start(&p, list_len);
373
374		✗	while(fourcc_data - rt->enhanced_codecs < fourcc_str_len) {
375			unsigned char fourcc[5];
376		✗	if (!strncmp(fourcc_data, "ac-3", 4) ||
377		✗	!strncmp(fourcc_data, "av01", 4) ||
378		✗	!strncmp(fourcc_data, "avc1", 4) ||
379		✗	!strncmp(fourcc_data, "ec-3", 4) ||
380		✗	!strncmp(fourcc_data, "fLaC", 4) ||
381		✗	!strncmp(fourcc_data, "hvc1", 4) ||
382		✗	!strncmp(fourcc_data, "vvc1", 4) ||
383		✗	!strncmp(fourcc_data, ".mp3", 4) ||
384		✗	!strncmp(fourcc_data, "mp4a", 4) ||
385		✗	!strncmp(fourcc_data, "Opus", 4) ||
386		✗	!strncmp(fourcc_data, "vp09", 4)) {
387		✗	av_strlcpy(fourcc, fourcc_data, sizeof(fourcc));
388		✗	ff_amf_write_string(&p, fourcc);
389			} else {
390		✗	av_log(s, AV_LOG_ERROR, "Unsupported codec fourcc, %.*s\n", 4, fourcc_data);
391		✗	ff_rtmp_packet_destroy(&pkt);
392		✗	return AVERROR_PATCHWELCOME;
393			}
394
395		✗	fourcc_data += 5;
396			}
397			}
398
399		✗	if (!rt->is_input) {
400		✗	ff_amf_write_field_name(&p, "type");
401		✗	ff_amf_write_string(&p, "nonprivate");
402			}
403		✗	ff_amf_write_field_name(&p, "flashVer");
404		✗	ff_amf_write_string(&p, rt->flashver);
405
406		✗	if (rt->swfurl || rt->swfverify) {
407		✗	ff_amf_write_field_name(&p, "swfUrl");
408		✗	if (rt->swfurl)
409		✗	ff_amf_write_string(&p, rt->swfurl);
410			else
411		✗	ff_amf_write_string(&p, rt->swfverify);
412			}
413
414		✗	ff_amf_write_field_name(&p, "tcUrl");
415		✗	ff_amf_write_string2(&p, rt->tcurl, rt->auth_params);
416		✗	if (rt->is_input) {
417		✗	ff_amf_write_field_name(&p, "fpad");
418		✗	ff_amf_write_bool(&p, 0);
419		✗	ff_amf_write_field_name(&p, "capabilities");
420		✗	ff_amf_write_number(&p, 15.0);
421
422			/* Tell the server we support all the audio codecs except
423			* SUPPORT_SND_INTEL (0x0008) and SUPPORT_SND_UNUSED (0x0010)
424			* which are unused in the RTMP protocol implementation. */
425		✗	ff_amf_write_field_name(&p, "audioCodecs");
426		✗	ff_amf_write_number(&p, 4071.0);
427		✗	ff_amf_write_field_name(&p, "videoCodecs");
428		✗	ff_amf_write_number(&p, 252.0);
429		✗	ff_amf_write_field_name(&p, "videoFunction");
430		✗	ff_amf_write_number(&p, 1.0);
431
432		✗	if (rt->pageurl) {
433		✗	ff_amf_write_field_name(&p, "pageUrl");
434		✗	ff_amf_write_string(&p, rt->pageurl);
435			}
436			}
437		✗	ff_amf_write_object_end(&p);
438
439		✗	if (rt->conn) {
440		✗	char *param = rt->conn;
441
442			// Write arbitrary AMF data to the Connect message.
443		✗	while (param) {
444			char *sep;
445		✗	param += strspn(param, " ");
446		✗	if (!*param)
447		✗	break;
448		✗	sep = strchr(param, ' ');
449		✗	if (sep)
450		✗	*sep = '\0';
451		✗	if ((ret = rtmp_write_amf_data(s, param, &p)) < 0) {
452			// Invalid AMF parameter.
453		✗	ff_rtmp_packet_destroy(&pkt);
454		✗	return ret;
455			}
456
457		✗	if (sep)
458		✗	param = sep + 1;
459			else
460		✗	break;
461			}
462			}
463
464		✗	pkt.size = p - pkt.data;
465
466		✗	return rtmp_send_packet(rt, &pkt, 1);
467			}
468
469
470			#define RTMP_CTRL_ABORT_MESSAGE (2)
471
472		✗	static int read_connect(URLContext *s, RTMPContext *rt)
473			{
474		✗	RTMPPacket pkt = { 0 };
475			uint8_t *p;
476			const uint8_t *cp;
477			int ret;
478			char command[64];
479			int stringlen;
480			double seqnum;
481			uint8_t tmpstr[256];
482			GetByteContext gbc;
483
484			// handle RTMP Protocol Control Messages
485			for (;;) {
486		✗	if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size,
487			&rt->prev_pkt[0], &rt->nb_prev_pkt[0])) < 0)
488		✗	return ret;
489			#ifdef DEBUG
490			ff_rtmp_packet_dump(s, &pkt);
491			#endif
492		✗	if (pkt.type == RTMP_PT_CHUNK_SIZE) {
493		✗	if ((ret = handle_chunk_size(s, &pkt)) < 0) {
494		✗	ff_rtmp_packet_destroy(&pkt);
495		✗	return ret;
496			}
497		✗	} else if (pkt.type == RTMP_CTRL_ABORT_MESSAGE) {
498		✗	av_log(s, AV_LOG_ERROR, "received abort message\n");
499		✗	ff_rtmp_packet_destroy(&pkt);
500		✗	return AVERROR_UNKNOWN;
501		✗	} else if (pkt.type == RTMP_PT_BYTES_READ) {
502		✗	av_log(s, AV_LOG_TRACE, "received acknowledgement\n");
503		✗	} else if (pkt.type == RTMP_PT_WINDOW_ACK_SIZE) {
504		✗	if ((ret = handle_window_ack_size(s, &pkt)) < 0) {
505		✗	ff_rtmp_packet_destroy(&pkt);
506		✗	return ret;
507			}
508		✗	} else if (pkt.type == RTMP_PT_SET_PEER_BW) {
509		✗	if ((ret = handle_set_peer_bw(s, &pkt)) < 0) {
510		✗	ff_rtmp_packet_destroy(&pkt);
511		✗	return ret;
512			}
513		✗	} else if (pkt.type == RTMP_PT_INVOKE) {
514			// received RTMP Command Message
515		✗	break;
516			} else {
517		✗	av_log(s, AV_LOG_ERROR, "Unknown control message type (%d)\n", pkt.type);
518			}
519		✗	ff_rtmp_packet_destroy(&pkt);
520			}
521
522		✗	cp = pkt.data;
523		✗	bytestream2_init(&gbc, cp, pkt.size);
524		✗	if (ff_amf_read_string(&gbc, command, sizeof(command), &stringlen)) {
525		✗	av_log(s, AV_LOG_ERROR, "Unable to read command string\n");
526		✗	ff_rtmp_packet_destroy(&pkt);
527		✗	return AVERROR_INVALIDDATA;
528			}
529		✗	if (strcmp(command, "connect")) {
530		✗	av_log(s, AV_LOG_ERROR, "Expecting connect, got %s\n", command);
531		✗	ff_rtmp_packet_destroy(&pkt);
532		✗	return AVERROR_INVALIDDATA;
533			}
534		✗	ret = ff_amf_read_number(&gbc, &seqnum);
535		✗	if (ret)
536		✗	av_log(s, AV_LOG_WARNING, "SeqNum not found\n");
537			/* Here one could parse an AMF Object with data as flashVers and others. */
538		✗	ret = ff_amf_get_field_value(gbc.buffer,
539		✗	gbc.buffer + bytestream2_get_bytes_left(&gbc),
540			"app", tmpstr, sizeof(tmpstr));
541		✗	if (ret)
542		✗	av_log(s, AV_LOG_WARNING, "App field not found in connect\n");
543		✗	if (!ret && strcmp(tmpstr, rt->app))
544		✗	av_log(s, AV_LOG_WARNING, "App field don't match up: %s <-> %s\n",
545			tmpstr, rt->app);
546		✗	ff_rtmp_packet_destroy(&pkt);
547
548			// Send Window Acknowledgement Size (as defined in specification)
549		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
550			RTMP_PT_WINDOW_ACK_SIZE, 0, 4)) < 0)
551		✗	return ret;
552		✗	p = pkt.data;
553			// Inform the peer about how often we want acknowledgements about what
554			// we send. (We don't check for the acknowledgements currently.)
555		✗	bytestream_put_be32(&p, rt->max_sent_unacked);
556		✗	pkt.size = p - pkt.data;
557		✗	ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
558			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
559		✗	ff_rtmp_packet_destroy(&pkt);
560		✗	if (ret < 0)
561		✗	return ret;
562			// Set Peer Bandwidth
563		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
564			RTMP_PT_SET_PEER_BW, 0, 5)) < 0)
565		✗	return ret;
566		✗	p = pkt.data;
567			// Tell the peer to only send this many bytes unless it gets acknowledgements.
568			// This could be any arbitrary value we want here.
569		✗	bytestream_put_be32(&p, rt->max_sent_unacked);
570		✗	bytestream_put_byte(&p, 2); // dynamic
571		✗	pkt.size = p - pkt.data;
572		✗	ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
573			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
574		✗	ff_rtmp_packet_destroy(&pkt);
575		✗	if (ret < 0)
576		✗	return ret;
577
578			// User control
579		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
580			RTMP_PT_USER_CONTROL, 0, 6)) < 0)
581		✗	return ret;
582
583		✗	p = pkt.data;
584		✗	bytestream_put_be16(&p, 0); // 0 -> Stream Begin
585		✗	bytestream_put_be32(&p, 0); // Stream 0
586		✗	ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
587			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
588		✗	ff_rtmp_packet_destroy(&pkt);
589		✗	if (ret < 0)
590		✗	return ret;
591
592			// Chunk size
593		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,
594			RTMP_PT_CHUNK_SIZE, 0, 4)) < 0)
595		✗	return ret;
596
597		✗	p = pkt.data;
598		✗	bytestream_put_be32(&p, rt->out_chunk_size);
599		✗	ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
600			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
601		✗	ff_rtmp_packet_destroy(&pkt);
602		✗	if (ret < 0)
603		✗	return ret;
604
605			// Send _result NetConnection.Connect.Success to connect
606		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
607			RTMP_PT_INVOKE, 0,
608			RTMP_PKTDATA_DEFAULT_SIZE)) < 0)
609		✗	return ret;
610
611		✗	p = pkt.data;
612		✗	ff_amf_write_string(&p, "_result");
613		✗	ff_amf_write_number(&p, seqnum);
614
615		✗	ff_amf_write_object_start(&p);
616		✗	ff_amf_write_field_name(&p, "fmsVer");
617		✗	ff_amf_write_string(&p, "FMS/3,0,1,123");
618		✗	ff_amf_write_field_name(&p, "capabilities");
619		✗	ff_amf_write_number(&p, 31);
620		✗	ff_amf_write_object_end(&p);
621
622		✗	ff_amf_write_object_start(&p);
623		✗	ff_amf_write_field_name(&p, "level");
624		✗	ff_amf_write_string(&p, "status");
625		✗	ff_amf_write_field_name(&p, "code");
626		✗	ff_amf_write_string(&p, "NetConnection.Connect.Success");
627		✗	ff_amf_write_field_name(&p, "description");
628		✗	ff_amf_write_string(&p, "Connection succeeded.");
629		✗	ff_amf_write_field_name(&p, "objectEncoding");
630		✗	ff_amf_write_number(&p, 0);
631		✗	ff_amf_write_object_end(&p);
632
633		✗	pkt.size = p - pkt.data;
634		✗	ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
635			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
636		✗	ff_rtmp_packet_destroy(&pkt);
637		✗	if (ret < 0)
638		✗	return ret;
639
640		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL,
641			RTMP_PT_INVOKE, 0, 30)) < 0)
642		✗	return ret;
643		✗	p = pkt.data;
644		✗	ff_amf_write_string(&p, "onBWDone");
645		✗	ff_amf_write_number(&p, 0);
646		✗	ff_amf_write_null(&p);
647		✗	ff_amf_write_number(&p, 8192);
648		✗	pkt.size = p - pkt.data;
649		✗	ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size,
650			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
651		✗	ff_rtmp_packet_destroy(&pkt);
652
653		✗	return ret;
654			}
655
656			/**
657			* Generate 'releaseStream' call and send it to the server. It should make
658			* the server release some channel for media streams.
659			*/
660		✗	static int gen_release_stream(URLContext *s, RTMPContext *rt)
661			{
662			RTMPPacket pkt;
663			uint8_t *p;
664			int ret;
665
666		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
667		✗	0, 29 + strlen(rt->playpath))) < 0)
668		✗	return ret;
669
670		✗	av_log(s, AV_LOG_DEBUG, "Releasing stream...\n");
671		✗	p = pkt.data;
672		✗	ff_amf_write_string(&p, "releaseStream");
673		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
674		✗	ff_amf_write_null(&p);
675		✗	ff_amf_write_string(&p, rt->playpath);
676
677		✗	return rtmp_send_packet(rt, &pkt, 1);
678			}
679
680			/**
681			* Generate 'FCPublish' call and send it to the server. It should make
682			* the server prepare for receiving media streams.
683			*/
684		✗	static int gen_fcpublish_stream(URLContext *s, RTMPContext *rt)
685			{
686			RTMPPacket pkt;
687			uint8_t *p;
688			int ret;
689
690		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
691		✗	0, 25 + strlen(rt->playpath))) < 0)
692		✗	return ret;
693
694		✗	av_log(s, AV_LOG_DEBUG, "FCPublish stream...\n");
695		✗	p = pkt.data;
696		✗	ff_amf_write_string(&p, "FCPublish");
697		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
698		✗	ff_amf_write_null(&p);
699		✗	ff_amf_write_string(&p, rt->playpath);
700
701		✗	return rtmp_send_packet(rt, &pkt, 1);
702			}
703
704			/**
705			* Generate 'FCUnpublish' call and send it to the server. It should make
706			* the server destroy stream.
707			*/
708		✗	static int gen_fcunpublish_stream(URLContext *s, RTMPContext *rt)
709			{
710			RTMPPacket pkt;
711			uint8_t *p;
712			int ret;
713
714		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
715		✗	0, 27 + strlen(rt->playpath))) < 0)
716		✗	return ret;
717
718		✗	av_log(s, AV_LOG_DEBUG, "UnPublishing stream...\n");
719		✗	p = pkt.data;
720		✗	ff_amf_write_string(&p, "FCUnpublish");
721		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
722		✗	ff_amf_write_null(&p);
723		✗	ff_amf_write_string(&p, rt->playpath);
724
725		✗	return rtmp_send_packet(rt, &pkt, 0);
726			}
727
728			/**
729			* Generate 'createStream' call and send it to the server. It should make
730			* the server allocate some channel for media streams.
731			*/
732		✗	static int gen_create_stream(URLContext *s, RTMPContext *rt)
733			{
734			RTMPPacket pkt;
735			uint8_t *p;
736			int ret;
737
738		✗	av_log(s, AV_LOG_DEBUG, "Creating stream...\n");
739
740		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
741			0, 25)) < 0)
742		✗	return ret;
743
744		✗	p = pkt.data;
745		✗	ff_amf_write_string(&p, "createStream");
746		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
747		✗	ff_amf_write_null(&p);
748
749		✗	return rtmp_send_packet(rt, &pkt, 1);
750			}
751
752
753			/**
754			* Generate 'deleteStream' call and send it to the server. It should make
755			* the server remove some channel for media streams.
756			*/
757		✗	static int gen_delete_stream(URLContext *s, RTMPContext *rt)
758			{
759			RTMPPacket pkt;
760			uint8_t *p;
761			int ret;
762
763		✗	av_log(s, AV_LOG_DEBUG, "Deleting stream...\n");
764
765		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
766			0, 34)) < 0)
767		✗	return ret;
768
769		✗	p = pkt.data;
770		✗	ff_amf_write_string(&p, "deleteStream");
771		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
772		✗	ff_amf_write_null(&p);
773		✗	ff_amf_write_number(&p, rt->stream_id);
774
775		✗	return rtmp_send_packet(rt, &pkt, 0);
776			}
777
778			/**
779			* Generate 'getStreamLength' call and send it to the server. If the server
780			* knows the duration of the selected stream, it will reply with the duration
781			* in seconds.
782			*/
783		✗	static int gen_get_stream_length(URLContext *s, RTMPContext *rt)
784			{
785			RTMPPacket pkt;
786			uint8_t *p;
787			int ret;
788
789		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
790		✗	0, 31 + strlen(rt->playpath))) < 0)
791		✗	return ret;
792
793		✗	p = pkt.data;
794		✗	ff_amf_write_string(&p, "getStreamLength");
795		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
796		✗	ff_amf_write_null(&p);
797		✗	ff_amf_write_string(&p, rt->playpath);
798
799		✗	return rtmp_send_packet(rt, &pkt, 1);
800			}
801
802			/**
803			* Generate client buffer time and send it to the server.
804			*/
805		✗	static int gen_buffer_time(URLContext *s, RTMPContext *rt)
806			{
807			RTMPPacket pkt;
808			uint8_t *p;
809			int ret;
810
811		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_USER_CONTROL,
812			1, 10)) < 0)
813		✗	return ret;
814
815		✗	p = pkt.data;
816		✗	bytestream_put_be16(&p, 3); // SetBuffer Length
817		✗	bytestream_put_be32(&p, rt->stream_id);
818		✗	bytestream_put_be32(&p, rt->client_buffer_time);
819
820		✗	return rtmp_send_packet(rt, &pkt, 0);
821			}
822
823			/**
824			* Generate 'play' call and send it to the server, then ping the server
825			* to start actual playing.
826			*/
827		✗	static int gen_play(URLContext *s, RTMPContext *rt)
828			{
829			RTMPPacket pkt;
830			uint8_t *p;
831			int ret;
832
833		✗	av_log(s, AV_LOG_DEBUG, "Sending play command for '%s'\n", rt->playpath);
834
835		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
836		✗	0, 29 + strlen(rt->playpath))) < 0)
837		✗	return ret;
838
839		✗	pkt.extra = rt->stream_id;
840
841		✗	p = pkt.data;
842		✗	ff_amf_write_string(&p, "play");
843		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
844		✗	ff_amf_write_null(&p);
845		✗	ff_amf_write_string(&p, rt->playpath);
846		✗	ff_amf_write_number(&p, rt->live * 1000);
847
848		✗	return rtmp_send_packet(rt, &pkt, 1);
849			}
850
851		✗	static int gen_seek(URLContext *s, RTMPContext *rt, int64_t timestamp)
852			{
853			RTMPPacket pkt;
854			uint8_t *p;
855			int ret;
856
857		✗	av_log(s, AV_LOG_DEBUG, "Sending seek command for timestamp %"PRId64"\n",
858			timestamp);
859
860		✗	if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 26)) < 0)
861		✗	return ret;
862
863		✗	pkt.extra = rt->stream_id;
864
865		✗	p = pkt.data;
866		✗	ff_amf_write_string(&p, "seek");
867		✗	ff_amf_write_number(&p, 0); //no tracking back responses
868		✗	ff_amf_write_null(&p); //as usual, the first null param
869		✗	ff_amf_write_number(&p, timestamp); //where we want to jump
870
871		✗	return rtmp_send_packet(rt, &pkt, 1);
872			}
873
874			/**
875			* Generate a pause packet that either pauses or unpauses the current stream.
876			*/
877		✗	static int gen_pause(URLContext *s, RTMPContext *rt, int pause, uint32_t timestamp)
878			{
879			RTMPPacket pkt;
880			uint8_t *p;
881			int ret;
882
883		✗	av_log(s, AV_LOG_DEBUG, "Sending pause command for timestamp %d\n",
884			timestamp);
885
886		✗	if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 29)) < 0)
887		✗	return ret;
888
889		✗	pkt.extra = rt->stream_id;
890
891		✗	p = pkt.data;
892		✗	ff_amf_write_string(&p, "pause");
893		✗	ff_amf_write_number(&p, 0); //no tracking back responses
894		✗	ff_amf_write_null(&p); //as usual, the first null param
895		✗	ff_amf_write_bool(&p, pause); // pause or unpause
896		✗	ff_amf_write_number(&p, timestamp); //where we pause the stream
897
898		✗	return rtmp_send_packet(rt, &pkt, 1);
899			}
900
901			/**
902			* Generate 'publish' call and send it to the server.
903			*/
904		✗	static int gen_publish(URLContext *s, RTMPContext *rt)
905			{
906			RTMPPacket pkt;
907			uint8_t *p;
908			int ret;
909
910		✗	av_log(s, AV_LOG_DEBUG, "Sending publish command for '%s'\n", rt->playpath);
911
912		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE,
913		✗	0, 30 + strlen(rt->playpath))) < 0)
914		✗	return ret;
915
916		✗	pkt.extra = rt->stream_id;
917
918		✗	p = pkt.data;
919		✗	ff_amf_write_string(&p, "publish");
920		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
921		✗	ff_amf_write_null(&p);
922		✗	ff_amf_write_string(&p, rt->playpath);
923		✗	ff_amf_write_string(&p, "live");
924
925		✗	return rtmp_send_packet(rt, &pkt, 1);
926			}
927
928			/**
929			* Generate ping reply and send it to the server.
930			*/
931		✗	static int gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt)
932			{
933			RTMPPacket pkt;
934			uint8_t *p;
935			int ret;
936
937		✗	if (ppkt->size < 6) {
938		✗	av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n",
939			ppkt->size);
940		✗	return AVERROR_INVALIDDATA;
941			}
942
943		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL,RTMP_PT_USER_CONTROL,
944		✗	ppkt->timestamp + 1, 6)) < 0)
945		✗	return ret;
946
947		✗	p = pkt.data;
948		✗	bytestream_put_be16(&p, 7); // PingResponse
949		✗	bytestream_put_be32(&p, AV_RB32(ppkt->data+2));
950
951		✗	return rtmp_send_packet(rt, &pkt, 0);
952			}
953
954			/**
955			* Generate SWF verification message and send it to the server.
956			*/
957		✗	static int gen_swf_verification(URLContext *s, RTMPContext *rt)
958			{
959			RTMPPacket pkt;
960			uint8_t *p;
961			int ret;
962
963		✗	av_log(s, AV_LOG_DEBUG, "Sending SWF verification...\n");
964		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_USER_CONTROL,
965			0, 44)) < 0)
966		✗	return ret;
967
968		✗	p = pkt.data;
969		✗	bytestream_put_be16(&p, 27);
970		✗	memcpy(p, rt->swfverification, 42);
971
972		✗	return rtmp_send_packet(rt, &pkt, 0);
973			}
974
975			/**
976			* Generate window acknowledgement size message and send it to the server.
977			*/
978		✗	static int gen_window_ack_size(URLContext *s, RTMPContext *rt)
979			{
980			RTMPPacket pkt;
981			uint8_t *p;
982			int ret;
983
984		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_WINDOW_ACK_SIZE,
985			0, 4)) < 0)
986		✗	return ret;
987
988		✗	p = pkt.data;
989		✗	bytestream_put_be32(&p, rt->max_sent_unacked);
990
991		✗	return rtmp_send_packet(rt, &pkt, 0);
992			}
993
994			/**
995			* Generate check bandwidth message and send it to the server.
996			*/
997		✗	static int gen_check_bw(URLContext *s, RTMPContext *rt)
998			{
999			RTMPPacket pkt;
1000			uint8_t *p;
1001			int ret;
1002
1003		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
1004			0, 21)) < 0)
1005		✗	return ret;
1006
1007		✗	p = pkt.data;
1008		✗	ff_amf_write_string(&p, "_checkbw");
1009		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
1010		✗	ff_amf_write_null(&p);
1011
1012		✗	return rtmp_send_packet(rt, &pkt, 1);
1013			}
1014
1015			/**
1016			* Generate report on bytes read so far and send it to the server.
1017			*/
1018		✗	static int gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts)
1019			{
1020			RTMPPacket pkt;
1021			uint8_t *p;
1022			int ret;
1023
1024		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ,
1025			ts, 4)) < 0)
1026		✗	return ret;
1027
1028		✗	p = pkt.data;
1029		✗	bytestream_put_be32(&p, rt->bytes_read);
1030
1031		✗	return rtmp_send_packet(rt, &pkt, 0);
1032			}
1033
1034		✗	static int gen_fcsubscribe_stream(URLContext *s, RTMPContext *rt,
1035			const char *subscribe)
1036			{
1037			RTMPPacket pkt;
1038			uint8_t *p;
1039			int ret;
1040
1041		✗	if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE,
1042		✗	0, 27 + strlen(subscribe))) < 0)
1043		✗	return ret;
1044
1045		✗	p = pkt.data;
1046		✗	ff_amf_write_string(&p, "FCSubscribe");
1047		✗	ff_amf_write_number(&p, ++rt->nb_invokes);
1048		✗	ff_amf_write_null(&p);
1049		✗	ff_amf_write_string(&p, subscribe);
1050
1051		✗	return rtmp_send_packet(rt, &pkt, 1);
1052			}
1053
1054			/**
1055			* Put HMAC-SHA2 digest of packet data (except for the bytes where this digest
1056			* will be stored) into that packet.
1057			*
1058			* @param buf handshake data (1536 bytes)
1059			* @param encrypted use an encrypted connection (RTMPE)
1060			* @return offset to the digest inside input data
1061			*/
1062		✗	static int rtmp_handshake_imprint_with_digest(uint8_t *buf, int encrypted)
1063			{
1064			int ret, digest_pos;
1065
1066		✗	if (encrypted)
1067		✗	digest_pos = ff_rtmp_calc_digest_pos(buf, 772, 728, 776);
1068			else
1069		✗	digest_pos = ff_rtmp_calc_digest_pos(buf, 8, 728, 12);
1070
1071		✗	ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
1072			rtmp_player_key, PLAYER_KEY_OPEN_PART_LEN,
1073			buf + digest_pos);
1074		✗	if (ret < 0)
1075		✗	return ret;
1076
1077		✗	return digest_pos;
1078			}
1079
1080			/**
1081			* Verify that the received server response has the expected digest value.
1082			*
1083			* @param buf handshake data received from the server (1536 bytes)
1084			* @param off position to search digest offset from
1085			* @return 0 if digest is valid, digest position otherwise
1086			*/
1087		✗	static int rtmp_validate_digest(uint8_t *buf, int off)
1088			{
1089			uint8_t digest[32];
1090			int ret, digest_pos;
1091
1092		✗	digest_pos = ff_rtmp_calc_digest_pos(buf, off, 728, off + 4);
1093
1094		✗	ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos,
1095			rtmp_server_key, SERVER_KEY_OPEN_PART_LEN,
1096			digest);
1097		✗	if (ret < 0)
1098		✗	return ret;
1099
1100		✗	if (!memcmp(digest, buf + digest_pos, 32))
1101		✗	return digest_pos;
1102		✗	return 0;
1103			}
1104
1105		✗	static int rtmp_calc_swf_verification(URLContext *s, RTMPContext *rt,
1106			uint8_t *buf)
1107			{
1108			uint8_t *p;
1109			int ret;
1110
1111		✗	if (rt->swfhash_len != 32) {
1112		✗	av_log(s, AV_LOG_ERROR,
1113			"Hash of the decompressed SWF file is not 32 bytes long.\n");
1114		✗	return AVERROR(EINVAL);
1115			}
1116
1117		✗	p = &rt->swfverification[0];
1118		✗	bytestream_put_byte(&p, 1);
1119		✗	bytestream_put_byte(&p, 1);
1120		✗	bytestream_put_be32(&p, rt->swfsize);
1121		✗	bytestream_put_be32(&p, rt->swfsize);
1122
1123		✗	if ((ret = ff_rtmp_calc_digest(rt->swfhash, 32, 0, buf, 32, p)) < 0)
1124		✗	return ret;
1125
1126		✗	return 0;
1127			}
1128
1129			#if CONFIG_ZLIB
1130		✗	static int rtmp_uncompress_swfplayer(uint8_t *in_data, int64_t in_size,
1131			uint8_t **out_data, int64_t *out_size)
1132			{
1133		✗	z_stream zs = { 0 };
1134			void *ptr;
1135			int size;
1136		✗	int ret = 0;
1137
1138		✗	zs.avail_in = in_size;
1139		✗	zs.next_in = in_data;
1140		✗	ret = inflateInit(&zs);
1141		✗	if (ret != Z_OK)
1142		✗	return AVERROR_UNKNOWN;
1143
1144			do {
1145			uint8_t tmp_buf[16384];
1146
1147		✗	zs.avail_out = sizeof(tmp_buf);
1148		✗	zs.next_out = tmp_buf;
1149
1150		✗	ret = inflate(&zs, Z_NO_FLUSH);
1151		✗	if (ret != Z_OK && ret != Z_STREAM_END) {
1152		✗	ret = AVERROR_UNKNOWN;
1153		✗	goto fail;
1154			}
1155
1156		✗	size = sizeof(tmp_buf) - zs.avail_out;
1157		✗	if (!(ptr = av_realloc(*out_data, *out_size + size))) {
1158		✗	ret = AVERROR(ENOMEM);
1159		✗	goto fail;
1160			}
1161		✗	*out_data = ptr;
1162
1163		✗	memcpy(*out_data + *out_size, tmp_buf, size);
1164		✗	*out_size += size;
1165		✗	} while (zs.avail_out == 0);
1166
1167		✗	fail:
1168		✗	inflateEnd(&zs);
1169		✗	return ret;
1170			}
1171			#endif
1172
1173		✗	static int rtmp_calc_swfhash(URLContext *s)
1174			{
1175		✗	RTMPContext *rt = s->priv_data;
1176		✗	uint8_t *in_data = NULL, *out_data = NULL, *swfdata;
1177			int64_t in_size;
1178		✗	URLContext *stream = NULL;
1179			char swfhash[32];
1180			int swfsize;
1181		✗	int ret = 0;
1182
1183			/* Get the SWF player file. */
1184		✗	if ((ret = ffurl_open_whitelist(&stream, rt->swfverify, AVIO_FLAG_READ,
1185		✗	&s->interrupt_callback, NULL,
1186			s->protocol_whitelist, s->protocol_blacklist, s)) < 0) {
1187		✗	av_log(s, AV_LOG_ERROR, "Cannot open connection %s.\n", rt->swfverify);
1188		✗	goto fail;
1189			}
1190
1191		✗	if ((in_size = ffurl_seek(stream, 0, AVSEEK_SIZE)) < 0) {
1192		✗	ret = AVERROR(EIO);
1193		✗	goto fail;
1194			}
1195
1196		✗	if (!(in_data = av_malloc(in_size))) {
1197		✗	ret = AVERROR(ENOMEM);
1198		✗	goto fail;
1199			}
1200
1201		✗	if ((ret = ffurl_read_complete(stream, in_data, in_size)) < 0)
1202		✗	goto fail;
1203
1204		✗	if (in_size < 3) {
1205		✗	ret = AVERROR_INVALIDDATA;
1206		✗	goto fail;
1207			}
1208
1209		✗	if (!memcmp(in_data, "CWS", 3)) {
1210			#if CONFIG_ZLIB
1211			int64_t out_size;
1212			/* Decompress the SWF player file using Zlib. */
1213		✗	if (!(out_data = av_malloc(8))) {
1214		✗	ret = AVERROR(ENOMEM);
1215		✗	goto fail;
1216			}
1217		✗	*in_data = 'F'; // magic stuff
1218		✗	memcpy(out_data, in_data, 8);
1219		✗	out_size = 8;
1220
1221		✗	if ((ret = rtmp_uncompress_swfplayer(in_data + 8, in_size - 8,
1222			&out_data, &out_size)) < 0)
1223		✗	goto fail;
1224		✗	swfsize = out_size;
1225		✗	swfdata = out_data;
1226			#else
1227			av_log(s, AV_LOG_ERROR,
1228			"Zlib is required for decompressing the SWF player file.\n");
1229			ret = AVERROR(EINVAL);
1230			goto fail;
1231			#endif
1232			} else {
1233		✗	swfsize = in_size;
1234		✗	swfdata = in_data;
1235			}
1236
1237			/* Compute the SHA256 hash of the SWF player file. */
1238		✗	if ((ret = ff_rtmp_calc_digest(swfdata, swfsize, 0,
1239			"Genuine Adobe Flash Player 001", 30,
1240			swfhash)) < 0)
1241		✗	goto fail;
1242
1243			/* Set SWFVerification parameters. */
1244		✗	av_opt_set_bin(rt, "rtmp_swfhash", swfhash, 32, 0);
1245		✗	rt->swfsize = swfsize;
1246
1247		✗	fail:
1248		✗	av_freep(&in_data);
1249		✗	av_freep(&out_data);
1250		✗	ffurl_close(stream);
1251		✗	return ret;
1252			}
1253
1254			/**
1255			* Perform handshake with the server by means of exchanging pseudorandom data
1256			* signed with HMAC-SHA2 digest.
1257			*
1258			* @return 0 if handshake succeeds, negative value otherwise
1259			*/
1260		✗	static int rtmp_handshake(URLContext *s, RTMPContext *rt)
1261			{
1262			AVLFG rnd;
1263		✗	uint8_t tosend [RTMP_HANDSHAKE_PACKET_SIZE+1] = {
1264			3, // unencrypted data
1265			0, 0, 0, 0, // client uptime
1266			RTMP_CLIENT_VER1,
1267			RTMP_CLIENT_VER2,
1268			RTMP_CLIENT_VER3,
1269			RTMP_CLIENT_VER4,
1270			};
1271			uint8_t clientdata[RTMP_HANDSHAKE_PACKET_SIZE];
1272			uint8_t serverdata[RTMP_HANDSHAKE_PACKET_SIZE+1];
1273			int i;
1274			int server_pos, client_pos;
1275			uint8_t digest[32], signature[32];
1276			int ret;
1277			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1278			int type = 0;
1279			#endif
1280
1281		✗	av_log(s, AV_LOG_DEBUG, "Handshaking...\n");
1282
1283		✗	av_lfg_init(&rnd, 0xDEADC0DE);
1284			// generate handshake packet - 1536 bytes of pseudorandom data
1285		✗	for (i = 9; i <= RTMP_HANDSHAKE_PACKET_SIZE; i++)
1286		✗	tosend[i] = av_lfg_get(&rnd) >> 24;
1287
1288			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1289			if (rt->encrypted) {
1290			/* When the client wants to use RTMPE, we have to change the command
1291			* byte to 0x06 which means to use encrypted data and we have to set
1292			* the flash version to at least 9.0.115.0. */
1293			tosend[0] = 6;
1294			tosend[5] = 128;
1295			tosend[6] = 0;
1296			tosend[7] = 3;
1297			tosend[8] = 2;
1298
1299			/* Initialize the Diffie-Hellmann context and generate the public key
1300			* to send to the server. */
1301			if ((ret = ff_rtmpe_gen_pub_key(rt->stream, tosend + 1)) < 0)
1302			return ret;
1303			}
1304			#endif
1305
1306		✗	client_pos = rtmp_handshake_imprint_with_digest(tosend + 1, rt->encrypted);
1307		✗	if (client_pos < 0)
1308		✗	return client_pos;
1309
1310		✗	if ((ret = ffurl_write(rt->stream, tosend,
1311			RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) {
1312		✗	av_log(s, AV_LOG_ERROR, "Cannot write RTMP handshake request\n");
1313		✗	return ret;
1314			}
1315
1316		✗	if ((ret = ffurl_read_complete(rt->stream, serverdata,
1317			RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) {
1318		✗	av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
1319		✗	return ret;
1320			}
1321
1322		✗	if ((ret = ffurl_read_complete(rt->stream, clientdata,
1323			RTMP_HANDSHAKE_PACKET_SIZE)) < 0) {
1324		✗	av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n");
1325		✗	return ret;
1326			}
1327
1328		✗	av_log(s, AV_LOG_DEBUG, "Type answer %d\n", serverdata[0]);
1329		✗	av_log(s, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n",
1330		✗	serverdata[5], serverdata[6], serverdata[7], serverdata[8]);
1331
1332		✗	if (rt->is_input && serverdata[5] >= 3) {
1333		✗	server_pos = rtmp_validate_digest(serverdata + 1, 772);
1334		✗	if (server_pos < 0)
1335		✗	return server_pos;
1336
1337		✗	if (!server_pos) {
1338			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1339			type = 1;
1340			#endif
1341		✗	server_pos = rtmp_validate_digest(serverdata + 1, 8);
1342		✗	if (server_pos < 0)
1343		✗	return server_pos;
1344
1345		✗	if (!server_pos) {
1346		✗	av_log(s, AV_LOG_ERROR, "Server response validating failed\n");
1347		✗	return AVERROR(EIO);
1348			}
1349			}
1350
1351			/* Generate SWFVerification token (SHA256 HMAC hash of decompressed SWF,
1352			* key are the last 32 bytes of the server handshake. */
1353		✗	if (rt->swfsize) {
1354		✗	if ((ret = rtmp_calc_swf_verification(s, rt, serverdata + 1 +
1355			RTMP_HANDSHAKE_PACKET_SIZE - 32)) < 0)
1356		✗	return ret;
1357			}
1358
1359		✗	ret = ff_rtmp_calc_digest(tosend + 1 + client_pos, 32, 0,
1360			rtmp_server_key, sizeof(rtmp_server_key),
1361			digest);
1362		✗	if (ret < 0)
1363		✗	return ret;
1364
1365		✗	ret = ff_rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE - 32,
1366			0, digest, 32, signature);
1367		✗	if (ret < 0)
1368		✗	return ret;
1369
1370			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1371			if (rt->encrypted) {
1372			/* Compute the shared secret key sent by the server and initialize
1373			* the RC4 encryption. */
1374			if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1,
1375			tosend + 1, type)) < 0)
1376			return ret;
1377
1378			/* Encrypt the signature received by the server. */
1379			ff_rtmpe_encrypt_sig(rt->stream, signature, digest, serverdata[0]);
1380			}
1381			#endif
1382
1383		✗	if (memcmp(signature, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) {
1384		✗	av_log(s, AV_LOG_ERROR, "Signature mismatch\n");
1385		✗	return AVERROR(EIO);
1386			}
1387
1388		✗	for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++)
1389		✗	tosend[i] = av_lfg_get(&rnd) >> 24;
1390		✗	ret = ff_rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0,
1391			rtmp_player_key, sizeof(rtmp_player_key),
1392			digest);
1393		✗	if (ret < 0)
1394		✗	return ret;
1395
1396		✗	ret = ff_rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0,
1397			digest, 32,
1398			tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32);
1399		✗	if (ret < 0)
1400		✗	return ret;
1401
1402			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1403			if (rt->encrypted) {
1404			/* Encrypt the signature to be send to the server. */
1405			ff_rtmpe_encrypt_sig(rt->stream, tosend +
1406			RTMP_HANDSHAKE_PACKET_SIZE - 32, digest,
1407			serverdata[0]);
1408			}
1409			#endif
1410
1411			// write reply back to the server
1412		✗	if ((ret = ffurl_write(rt->stream, tosend,
1413			RTMP_HANDSHAKE_PACKET_SIZE)) < 0)
1414		✗	return ret;
1415
1416			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1417			if (rt->encrypted) {
1418			/* Set RC4 keys for encryption and update the keystreams. */
1419			if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0)
1420			return ret;
1421			}
1422			#endif
1423			} else {
1424			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1425			if (rt->encrypted) {
1426			/* Compute the shared secret key sent by the server and initialize
1427			* the RC4 encryption. */
1428			if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1,
1429			tosend + 1, 1)) < 0)
1430			return ret;
1431
1432			if (serverdata[0] == 9) {
1433			/* Encrypt the signature received by the server. */
1434			ff_rtmpe_encrypt_sig(rt->stream, signature, digest,
1435			serverdata[0]);
1436			}
1437			}
1438			#endif
1439
1440		✗	if ((ret = ffurl_write(rt->stream, serverdata + 1,
1441			RTMP_HANDSHAKE_PACKET_SIZE)) < 0)
1442		✗	return ret;
1443
1444			#if CONFIG_FFRTMPCRYPT_PROTOCOL
1445			if (rt->encrypted) {
1446			/* Set RC4 keys for encryption and update the keystreams. */
1447			if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0)
1448			return ret;
1449			}
1450			#endif
1451			}
1452
1453		✗	return 0;
1454			}
1455
1456		✗	static int rtmp_receive_hs_packet(RTMPContext* rt, uint32_t *first_int,
1457			uint32_t *second_int, char *arraydata,
1458			int size)
1459			{
1460			int inoutsize;
1461
1462		✗	inoutsize = ffurl_read_complete(rt->stream, arraydata,
1463			RTMP_HANDSHAKE_PACKET_SIZE);
1464		✗	if (inoutsize <= 0)
1465		✗	return AVERROR(EIO);
1466		✗	if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) {
1467		✗	av_log(rt, AV_LOG_ERROR, "Erroneous Message size %d"
1468			" not following standard\n", (int)inoutsize);
1469		✗	return AVERROR(EINVAL);
1470			}
1471
1472		✗	*first_int = AV_RB32(arraydata);
1473		✗	*second_int = AV_RB32(arraydata + 4);
1474		✗	return 0;
1475			}
1476
1477		✗	static int rtmp_send_hs_packet(RTMPContext* rt, uint32_t first_int,
1478			uint32_t second_int, char *arraydata, int size)
1479			{
1480			int inoutsize;
1481
1482		✗	AV_WB32(arraydata, first_int);
1483		✗	AV_WB32(arraydata + 4, second_int);
1484		✗	inoutsize = ffurl_write(rt->stream, arraydata,
1485			RTMP_HANDSHAKE_PACKET_SIZE);
1486		✗	if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) {
1487		✗	av_log(rt, AV_LOG_ERROR, "Unable to write answer\n");
1488		✗	return AVERROR(EIO);
1489			}
1490
1491		✗	return 0;
1492			}
1493
1494			/**
1495			* rtmp handshake server side
1496			*/
1497		✗	static int rtmp_server_handshake(URLContext *s, RTMPContext *rt)
1498			{
1499			uint8_t buffer[RTMP_HANDSHAKE_PACKET_SIZE];
1500			uint32_t hs_epoch;
1501			uint32_t hs_my_epoch;
1502			uint8_t hs_c1[RTMP_HANDSHAKE_PACKET_SIZE];
1503			uint8_t hs_s1[RTMP_HANDSHAKE_PACKET_SIZE];
1504			uint32_t zeroes;
1505		✗	uint32_t temp = 0;
1506		✗	int randomidx = 0;
1507		✗	int inoutsize = 0;
1508			int ret;
1509
1510		✗	inoutsize = ffurl_read_complete(rt->stream, buffer, 1); // Receive C0
1511		✗	if (inoutsize <= 0) {
1512		✗	av_log(s, AV_LOG_ERROR, "Unable to read handshake\n");
1513		✗	return AVERROR(EIO);
1514			}
1515			// Check Version
1516		✗	if (buffer[0] != 3) {
1517		✗	av_log(s, AV_LOG_ERROR, "RTMP protocol version mismatch\n");
1518		✗	return AVERROR(EIO);
1519			}
1520		✗	if (ffurl_write(rt->stream, buffer, 1) <= 0) { // Send S0
1521		✗	av_log(s, AV_LOG_ERROR,
1522			"Unable to write answer - RTMP S0\n");
1523		✗	return AVERROR(EIO);
1524			}
1525			/* Receive C1 */
1526		✗	ret = rtmp_receive_hs_packet(rt, &hs_epoch, &zeroes, hs_c1,
1527			RTMP_HANDSHAKE_PACKET_SIZE);
1528		✗	if (ret) {
1529		✗	av_log(s, AV_LOG_ERROR, "RTMP Handshake C1 Error\n");
1530		✗	return ret;
1531			}
1532			/* Send S1 */
1533			/* By now same epoch will be sent */
1534		✗	hs_my_epoch = hs_epoch;
1535			/* Generate random */
1536		✗	for (randomidx = 8; randomidx < (RTMP_HANDSHAKE_PACKET_SIZE);
1537		✗	randomidx += 4)
1538		✗	AV_WB32(hs_s1 + randomidx, av_get_random_seed());
1539
1540		✗	ret = rtmp_send_hs_packet(rt, hs_my_epoch, 0, hs_s1,
1541			RTMP_HANDSHAKE_PACKET_SIZE);
1542		✗	if (ret) {
1543		✗	av_log(s, AV_LOG_ERROR, "RTMP Handshake S1 Error\n");
1544		✗	return ret;
1545			}
1546			/* Send S2 */
1547		✗	ret = rtmp_send_hs_packet(rt, hs_epoch, 0, hs_c1,
1548			RTMP_HANDSHAKE_PACKET_SIZE);
1549		✗	if (ret) {
1550		✗	av_log(s, AV_LOG_ERROR, "RTMP Handshake S2 Error\n");
1551		✗	return ret;
1552			}
1553			/* Receive C2 */
1554		✗	ret = rtmp_receive_hs_packet(rt, &temp, &zeroes, buffer,
1555			RTMP_HANDSHAKE_PACKET_SIZE);
1556		✗	if (ret) {
1557		✗	av_log(s, AV_LOG_ERROR, "RTMP Handshake C2 Error\n");
1558		✗	return ret;
1559			}
1560		✗	if (temp != hs_my_epoch)
1561		✗	av_log(s, AV_LOG_WARNING,
1562			"Erroneous C2 Message epoch does not match up with C1 epoch\n");
1563		✗	if (memcmp(buffer + 8, hs_s1 + 8,
1564			RTMP_HANDSHAKE_PACKET_SIZE - 8))
1565		✗	av_log(s, AV_LOG_WARNING,
1566			"Erroneous C2 Message random does not match up\n");
1567
1568		✗	return 0;
1569			}
1570
1571		✗	static int handle_chunk_size(URLContext *s, RTMPPacket *pkt)
1572			{
1573		✗	RTMPContext *rt = s->priv_data;
1574			int ret;
1575
1576		✗	if (pkt->size < 4) {
1577		✗	av_log(s, AV_LOG_ERROR,
1578			"Too short chunk size change packet (%d)\n",
1579			pkt->size);
1580		✗	return AVERROR_INVALIDDATA;
1581			}
1582
1583		✗	if (!rt->is_input) {
1584			/* Send the same chunk size change packet back to the server,
1585			* setting the outgoing chunk size to the same as the incoming one. */
1586		✗	if ((ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size,
1587			&rt->prev_pkt[1], &rt->nb_prev_pkt[1])) < 0)
1588		✗	return ret;
1589		✗	rt->out_chunk_size = AV_RB32(pkt->data);
1590			}
1591
1592		✗	rt->in_chunk_size = AV_RB32(pkt->data);
1593		✗	if (rt->in_chunk_size <= 0) {
1594		✗	av_log(s, AV_LOG_ERROR, "Incorrect chunk size %d\n",
1595			rt->in_chunk_size);
1596		✗	return AVERROR_INVALIDDATA;
1597			}
1598		✗	av_log(s, AV_LOG_DEBUG, "New incoming chunk size = %d\n",
1599			rt->in_chunk_size);
1600
1601		✗	return 0;
1602			}
1603
1604		✗	static int handle_user_control(URLContext *s, RTMPPacket *pkt)
1605			{
1606		✗	RTMPContext *rt = s->priv_data;
1607			int t, ret;
1608
1609		✗	if (pkt->size < 2) {
1610		✗	av_log(s, AV_LOG_ERROR, "Too short user control packet (%d)\n",
1611			pkt->size);
1612		✗	return AVERROR_INVALIDDATA;
1613			}
1614
1615		✗	t = AV_RB16(pkt->data);
1616		✗	if (t == 6) { // PingRequest
1617		✗	if ((ret = gen_pong(s, rt, pkt)) < 0)
1618		✗	return ret;
1619		✗	} else if (t == 26) {
1620		✗	if (rt->swfsize) {
1621		✗	if ((ret = gen_swf_verification(s, rt)) < 0)
1622		✗	return ret;
1623			} else {
1624		✗	av_log(s, AV_LOG_WARNING, "Ignoring SWFVerification request.\n");
1625			}
1626			}
1627
1628		✗	return 0;
1629			}
1630
1631		✗	static int handle_set_peer_bw(URLContext *s, RTMPPacket *pkt)
1632			{
1633		✗	RTMPContext *rt = s->priv_data;
1634
1635		✗	if (pkt->size < 4) {
1636		✗	av_log(s, AV_LOG_ERROR,
1637			"Peer bandwidth packet is less than 4 bytes long (%d)\n",
1638			pkt->size);
1639		✗	return AVERROR_INVALIDDATA;
1640			}
1641
1642			// We currently don't check how much the peer has acknowledged of
1643			// what we have sent. To do that properly, we should call
1644			// gen_window_ack_size here, to tell the peer that we want an
1645			// acknowledgement with (at least) that interval.
1646		✗	rt->max_sent_unacked = AV_RB32(pkt->data);
1647		✗	if (rt->max_sent_unacked <= 0) {
1648		✗	av_log(s, AV_LOG_ERROR, "Incorrect set peer bandwidth %d\n",
1649			rt->max_sent_unacked);
1650		✗	return AVERROR_INVALIDDATA;
1651
1652			}
1653		✗	av_log(s, AV_LOG_DEBUG, "Max sent, unacked = %d\n", rt->max_sent_unacked);
1654
1655		✗	return 0;
1656			}
1657
1658		✗	static int handle_window_ack_size(URLContext *s, RTMPPacket *pkt)
1659			{
1660		✗	RTMPContext *rt = s->priv_data;
1661
1662		✗	if (pkt->size < 4) {
1663		✗	av_log(s, AV_LOG_ERROR,
1664			"Too short window acknowledgement size packet (%d)\n",
1665			pkt->size);
1666		✗	return AVERROR_INVALIDDATA;
1667			}
1668
1669		✗	rt->receive_report_size = AV_RB32(pkt->data);
1670		✗	if (rt->receive_report_size <= 0) {
1671		✗	av_log(s, AV_LOG_ERROR, "Incorrect window acknowledgement size %d\n",
1672			rt->receive_report_size);
1673		✗	return AVERROR_INVALIDDATA;
1674			}
1675		✗	av_log(s, AV_LOG_DEBUG, "Window acknowledgement size = %d\n", rt->receive_report_size);
1676			// Send an Acknowledgement packet after receiving half the maximum
1677			// size, to make sure the peer can keep on sending without waiting
1678			// for acknowledgements.
1679		✗	rt->receive_report_size >>= 1;
1680
1681		✗	return 0;
1682			}
1683
1684		✗	static int do_adobe_auth(RTMPContext *rt, const char *user, const char *salt,
1685			const char *opaque, const char *challenge)
1686			{
1687			uint8_t hash[16];
1688			char hashstr[AV_BASE64_SIZE(sizeof(hash))], challenge2[10];
1689		✗	struct AVMD5 *md5 = av_md5_alloc();
1690		✗	if (!md5)
1691		✗	return AVERROR(ENOMEM);
1692
1693		✗	snprintf(challenge2, sizeof(challenge2), "%08x", av_get_random_seed());
1694
1695		✗	av_md5_init(md5);
1696		✗	av_md5_update(md5, user, strlen(user));
1697		✗	av_md5_update(md5, salt, strlen(salt));
1698		✗	av_md5_update(md5, rt->password, strlen(rt->password));
1699		✗	av_md5_final(md5, hash);
1700		✗	av_base64_encode(hashstr, sizeof(hashstr), hash,
1701			sizeof(hash));
1702		✗	av_md5_init(md5);
1703		✗	av_md5_update(md5, hashstr, strlen(hashstr));
1704		✗	if (opaque)
1705		✗	av_md5_update(md5, opaque, strlen(opaque));
1706		✗	else if (challenge)
1707		✗	av_md5_update(md5, challenge, strlen(challenge));
1708		✗	av_md5_update(md5, challenge2, strlen(challenge2));
1709		✗	av_md5_final(md5, hash);
1710		✗	av_base64_encode(hashstr, sizeof(hashstr), hash,
1711			sizeof(hash));
1712		✗	snprintf(rt->auth_params, sizeof(rt->auth_params),
1713			"?authmod=%s&user=%s&challenge=%s&response=%s",
1714			"adobe", user, challenge2, hashstr);
1715		✗	if (opaque)
1716		✗	av_strlcatf(rt->auth_params, sizeof(rt->auth_params),
1717			"&opaque=%s", opaque);
1718
1719		✗	av_free(md5);
1720		✗	return 0;
1721			}
1722
1723		✗	static int do_llnw_auth(RTMPContext *rt, const char *user, const char *nonce)
1724			{
1725			uint8_t hash[16];
1726			char hashstr1[33], hashstr2[33];
1727		✗	const char *realm = "live";
1728		✗	const char *method = "publish";
1729		✗	const char *qop = "auth";
1730		✗	const char *nc = "00000001";
1731			char cnonce[10];
1732		✗	struct AVMD5 *md5 = av_md5_alloc();
1733		✗	if (!md5)
1734		✗	return AVERROR(ENOMEM);
1735
1736		✗	snprintf(cnonce, sizeof(cnonce), "%08x", av_get_random_seed());
1737
1738		✗	av_md5_init(md5);
1739		✗	av_md5_update(md5, user, strlen(user));
1740		✗	av_md5_update(md5, ":", 1);
1741		✗	av_md5_update(md5, realm, strlen(realm));
1742		✗	av_md5_update(md5, ":", 1);
1743		✗	av_md5_update(md5, rt->password, strlen(rt->password));
1744		✗	av_md5_final(md5, hash);
1745		✗	ff_data_to_hex(hashstr1, hash, 16, 1);
1746
1747		✗	av_md5_init(md5);
1748		✗	av_md5_update(md5, method, strlen(method));
1749		✗	av_md5_update(md5, ":/", 2);
1750		✗	av_md5_update(md5, rt->app, strlen(rt->app));
1751		✗	if (!strchr(rt->app, '/'))
1752		✗	av_md5_update(md5, "/_definst_", strlen("/_definst_"));
1753		✗	av_md5_final(md5, hash);
1754		✗	ff_data_to_hex(hashstr2, hash, 16, 1);
1755
1756		✗	av_md5_init(md5);
1757		✗	av_md5_update(md5, hashstr1, strlen(hashstr1));
1758		✗	av_md5_update(md5, ":", 1);
1759		✗	if (nonce)
1760		✗	av_md5_update(md5, nonce, strlen(nonce));
1761		✗	av_md5_update(md5, ":", 1);
1762		✗	av_md5_update(md5, nc, strlen(nc));
1763		✗	av_md5_update(md5, ":", 1);
1764		✗	av_md5_update(md5, cnonce, strlen(cnonce));
1765		✗	av_md5_update(md5, ":", 1);
1766		✗	av_md5_update(md5, qop, strlen(qop));
1767		✗	av_md5_update(md5, ":", 1);
1768		✗	av_md5_update(md5, hashstr2, strlen(hashstr2));
1769		✗	av_md5_final(md5, hash);
1770		✗	ff_data_to_hex(hashstr1, hash, 16, 1);
1771
1772		✗	snprintf(rt->auth_params, sizeof(rt->auth_params),
1773			"?authmod=%s&user=%s&nonce=%s&cnonce=%s&nc=%s&response=%s",
1774			"llnw", user, nonce, cnonce, nc, hashstr1);
1775
1776		✗	av_free(md5);
1777		✗	return 0;
1778			}
1779
1780		✗	static int handle_connect_error(URLContext *s, const char *desc)
1781			{
1782		✗	RTMPContext *rt = s->priv_data;
1783			char buf[300], *ptr, authmod[15];
1784		✗	int i = 0, ret = 0;
1785		✗	const char *user = "", *salt = "", *opaque = NULL,
1786		✗	*challenge = NULL, *cptr = NULL, *nonce = NULL;
1787
1788		✗	if (!(cptr = strstr(desc, "authmod=adobe")) &&
1789		✗	!(cptr = strstr(desc, "authmod=llnw"))) {
1790		✗	av_log(s, AV_LOG_ERROR,
1791			"Unknown connect error (unsupported authentication method?)\n");
1792		✗	return AVERROR_UNKNOWN;
1793			}
1794		✗	cptr += strlen("authmod=");
1795		✗	while (*cptr && *cptr != ' ' && i < sizeof(authmod) - 1)
1796		✗	authmod[i++] = *cptr++;
1797		✗	authmod[i] = '\0';
1798
1799		✗	if (!rt->username[0] || !rt->password[0]) {
1800		✗	av_log(s, AV_LOG_ERROR, "No credentials set\n");
1801		✗	return AVERROR_UNKNOWN;
1802			}
1803
1804		✗	if (strstr(desc, "?reason=authfailed")) {
1805		✗	av_log(s, AV_LOG_ERROR, "Incorrect username/password\n");
1806		✗	return AVERROR_UNKNOWN;
1807		✗	} else if (strstr(desc, "?reason=nosuchuser")) {
1808		✗	av_log(s, AV_LOG_ERROR, "Incorrect username\n");
1809		✗	return AVERROR_UNKNOWN;
1810			}
1811
1812		✗	if (rt->auth_tried) {
1813		✗	av_log(s, AV_LOG_ERROR, "Authentication failed\n");
1814		✗	return AVERROR_UNKNOWN;
1815			}
1816
1817		✗	rt->auth_params[0] = '\0';
1818
1819		✗	if (strstr(desc, "code=403 need auth")) {
1820		✗	snprintf(rt->auth_params, sizeof(rt->auth_params),
1821		✗	"?authmod=%s&user=%s", authmod, rt->username);
1822		✗	return 0;
1823			}
1824
1825		✗	if (!(cptr = strstr(desc, "?reason=needauth"))) {
1826		✗	av_log(s, AV_LOG_ERROR, "No auth parameters found\n");
1827		✗	return AVERROR_UNKNOWN;
1828			}
1829
1830		✗	av_strlcpy(buf, cptr + 1, sizeof(buf));
1831		✗	ptr = buf;
1832
1833		✗	while (ptr) {
1834		✗	char *next = strchr(ptr, '&');
1835		✗	char *value = strchr(ptr, '=');
1836		✗	if (next)
1837		✗	*next++ = '\0';
1838		✗	if (value) {
1839		✗	*value++ = '\0';
1840		✗	if (!strcmp(ptr, "user")) {
1841		✗	user = value;
1842		✗	} else if (!strcmp(ptr, "salt")) {
1843		✗	salt = value;
1844		✗	} else if (!strcmp(ptr, "opaque")) {
1845		✗	opaque = value;
1846		✗	} else if (!strcmp(ptr, "challenge")) {
1847		✗	challenge = value;
1848		✗	} else if (!strcmp(ptr, "nonce")) {
1849		✗	nonce = value;
1850			} else {
1851		✗	av_log(s, AV_LOG_INFO, "Ignoring unsupported var %s\n", ptr);
1852			}
1853			} else {
1854		✗	av_log(s, AV_LOG_WARNING, "Variable %s has NULL value\n", ptr);
1855			}
1856		✗	ptr = next;
1857			}
1858
1859		✗	if (!strcmp(authmod, "adobe")) {
1860		✗	if ((ret = do_adobe_auth(rt, user, salt, opaque, challenge)) < 0)
1861		✗	return ret;
1862			} else {
1863		✗	if ((ret = do_llnw_auth(rt, user, nonce)) < 0)
1864		✗	return ret;
1865			}
1866
1867		✗	rt->auth_tried = 1;
1868		✗	return 0;
1869			}
1870
1871		✗	static int handle_invoke_error(URLContext *s, RTMPPacket *pkt)
1872			{
1873		✗	RTMPContext *rt = s->priv_data;
1874		✗	const uint8_t *data_end = pkt->data + pkt->size;
1875		✗	char *tracked_method = NULL;
1876		✗	int level = AV_LOG_ERROR;
1877			uint8_t tmpstr[256];
1878			int ret;
1879
1880		✗	if ((ret = find_tracked_method(s, pkt, 9, &tracked_method)) < 0)
1881		✗	return ret;
1882
1883		✗	if (!ff_amf_get_field_value(pkt->data + 9, data_end,
1884			"description", tmpstr, sizeof(tmpstr))) {
1885		✗	if (tracked_method && (!strcmp(tracked_method, "_checkbw") ||
1886		✗	!strcmp(tracked_method, "releaseStream") ||
1887		✗	!strcmp(tracked_method, "FCSubscribe") ||
1888		✗	!strcmp(tracked_method, "FCPublish"))) {
1889			/* Gracefully ignore Adobe-specific historical artifact errors. */
1890		✗	level = AV_LOG_WARNING;
1891		✗	ret = 0;
1892		✗	} else if (tracked_method && !strcmp(tracked_method, "getStreamLength")) {
1893		✗	level = rt->live ? AV_LOG_DEBUG : AV_LOG_WARNING;
1894		✗	ret = 0;
1895		✗	} else if (tracked_method && !strcmp(tracked_method, "connect")) {
1896		✗	ret = handle_connect_error(s, tmpstr);
1897		✗	if (!ret) {
1898		✗	rt->do_reconnect = 1;
1899		✗	level = AV_LOG_VERBOSE;
1900			}
1901			} else
1902		✗	ret = AVERROR_UNKNOWN;
1903		✗	av_log(s, level, "Server error: %s\n", tmpstr);
1904			}
1905
1906		✗	av_free(tracked_method);
1907		✗	return ret;
1908			}
1909
1910		✗	static int write_begin(URLContext *s)
1911			{
1912		✗	RTMPContext *rt = s->priv_data;
1913			PutByteContext pbc;
1914		✗	RTMPPacket spkt = { 0 };
1915			int ret;
1916
1917			// Send Stream Begin 1
1918		✗	if ((ret = ff_rtmp_packet_create(&spkt, RTMP_NETWORK_CHANNEL,
1919			RTMP_PT_USER_CONTROL, 0, 6)) < 0) {
1920		✗	av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
1921		✗	return ret;
1922			}
1923
1924		✗	bytestream2_init_writer(&pbc, spkt.data, spkt.size);
1925		✗	bytestream2_put_be16(&pbc, 0); // 0 -> Stream Begin
1926		✗	bytestream2_put_be32(&pbc, rt->nb_streamid);
1927
1928		✗	ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
1929			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
1930
1931		✗	ff_rtmp_packet_destroy(&spkt);
1932
1933		✗	return ret;
1934			}
1935
1936		✗	static int write_status(URLContext *s, RTMPPacket *pkt,
1937			const char *status, const char *description, const char *details)
1938			{
1939		✗	RTMPContext *rt = s->priv_data;
1940		✗	RTMPPacket spkt = { 0 };
1941			uint8_t *pp;
1942			int ret;
1943
1944		✗	if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
1945			RTMP_PT_INVOKE, 0,
1946			RTMP_PKTDATA_DEFAULT_SIZE
1947		✗	+ strlen(status) + strlen(description)
1948		✗	+ zstrlen(details))) < 0) {
1949		✗	av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
1950		✗	return ret;
1951			}
1952
1953		✗	pp = spkt.data;
1954		✗	spkt.extra = pkt->extra;
1955		✗	ff_amf_write_string(&pp, "onStatus");
1956		✗	ff_amf_write_number(&pp, 0);
1957		✗	ff_amf_write_null(&pp);
1958
1959		✗	ff_amf_write_object_start(&pp);
1960		✗	ff_amf_write_field_name(&pp, "level");
1961		✗	ff_amf_write_string(&pp, "status");
1962		✗	ff_amf_write_field_name(&pp, "code");
1963		✗	ff_amf_write_string(&pp, status);
1964		✗	ff_amf_write_field_name(&pp, "description");
1965		✗	ff_amf_write_string(&pp, description);
1966		✗	if (details) {
1967		✗	ff_amf_write_field_name(&pp, "details");
1968		✗	ff_amf_write_string(&pp, details);
1969			}
1970		✗	ff_amf_write_object_end(&pp);
1971
1972		✗	spkt.size = pp - spkt.data;
1973		✗	ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
1974			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
1975		✗	ff_rtmp_packet_destroy(&spkt);
1976
1977		✗	return ret;
1978			}
1979
1980		✗	static int send_invoke_response(URLContext *s, RTMPPacket *pkt)
1981			{
1982		✗	RTMPContext *rt = s->priv_data;
1983			double seqnum;
1984			char filename[128];
1985			char command[64];
1986			int stringlen;
1987			char *pchar;
1988		✗	const uint8_t *p = pkt->data;
1989		✗	uint8_t *pp = NULL;
1990		✗	RTMPPacket spkt = { 0 };
1991			GetByteContext gbc;
1992			int ret;
1993
1994		✗	bytestream2_init(&gbc, p, pkt->size);
1995		✗	if (ff_amf_read_string(&gbc, command, sizeof(command),
1996			&stringlen)) {
1997		✗	av_log(s, AV_LOG_ERROR, "Error in PT_INVOKE\n");
1998		✗	return AVERROR_INVALIDDATA;
1999			}
2000
2001		✗	ret = ff_amf_read_number(&gbc, &seqnum);
2002		✗	if (ret)
2003		✗	return ret;
2004		✗	ret = ff_amf_read_null(&gbc);
2005		✗	if (ret)
2006		✗	return ret;
2007		✗	if (!strcmp(command, "FCPublish") ||
2008		✗	!strcmp(command, "publish")) {
2009		✗	ret = ff_amf_read_string(&gbc, filename,
2010			sizeof(filename), &stringlen);
2011		✗	if (ret) {
2012		✗	if (ret == AVERROR(EINVAL))
2013		✗	av_log(s, AV_LOG_ERROR, "Unable to parse stream name - name too long?\n");
2014			else
2015		✗	av_log(s, AV_LOG_ERROR, "Unable to parse stream name\n");
2016		✗	return ret;
2017			}
2018			// check with url
2019		✗	if (s->filename) {
2020		✗	pchar = strrchr(s->filename, '/');
2021		✗	if (!pchar) {
2022		✗	av_log(s, AV_LOG_WARNING,
2023			"Unable to find / in url %s, bad format\n",
2024			s->filename);
2025		✗	pchar = s->filename;
2026			}
2027		✗	pchar++;
2028		✗	if (strcmp(pchar, filename))
2029		✗	av_log(s, AV_LOG_WARNING, "Unexpected stream %s, expecting"
2030			" %s\n", filename, pchar);
2031			}
2032		✗	rt->state = STATE_RECEIVING;
2033			}
2034
2035		✗	if (!strcmp(command, "FCPublish")) {
2036		✗	if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
2037			RTMP_PT_INVOKE, 0,
2038			RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
2039		✗	av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
2040		✗	return ret;
2041			}
2042		✗	pp = spkt.data;
2043		✗	ff_amf_write_string(&pp, "onFCPublish");
2044		✗	} else if (!strcmp(command, "publish")) {
2045			char statusmsg[sizeof(filename) + 32];
2046		✗	snprintf(statusmsg, sizeof(statusmsg), "%s is now published", filename);
2047		✗	ret = write_begin(s);
2048		✗	if (ret < 0)
2049		✗	return ret;
2050
2051			// Send onStatus(NetStream.Publish.Start)
2052		✗	return write_status(s, pkt, "NetStream.Publish.Start",
2053			statusmsg, filename);
2054		✗	} else if (!strcmp(command, "play")) {
2055		✗	ret = write_begin(s);
2056		✗	if (ret < 0)
2057		✗	return ret;
2058		✗	rt->state = STATE_SENDING;
2059		✗	return write_status(s, pkt, "NetStream.Play.Start",
2060			"playing stream", NULL);
2061			} else {
2062		✗	if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL,
2063			RTMP_PT_INVOKE, 0,
2064			RTMP_PKTDATA_DEFAULT_SIZE)) < 0) {
2065		✗	av_log(s, AV_LOG_ERROR, "Unable to create response packet\n");
2066		✗	return ret;
2067			}
2068		✗	pp = spkt.data;
2069		✗	ff_amf_write_string(&pp, "_result");
2070		✗	ff_amf_write_number(&pp, seqnum);
2071		✗	ff_amf_write_null(&pp);
2072		✗	if (!strcmp(command, "createStream")) {
2073		✗	rt->nb_streamid++;
2074		✗	if (rt->nb_streamid == 0 || rt->nb_streamid == 2)
2075		✗	rt->nb_streamid++; /* Values 0 and 2 are reserved */
2076		✗	ff_amf_write_number(&pp, rt->nb_streamid);
2077			/* By now we don't control which streams are removed in
2078			* deleteStream. There is no stream creation control
2079			* if a client creates more than 2^32 - 2 streams. */
2080			}
2081			}
2082		✗	spkt.size = pp - spkt.data;
2083		✗	ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size,
2084			&rt->prev_pkt[1], &rt->nb_prev_pkt[1]);
2085		✗	ff_rtmp_packet_destroy(&spkt);
2086		✗	return ret;
2087			}
2088
2089			/**
2090			* Read the AMF_NUMBER response ("_result") to a function call
2091			* (e.g. createStream()). This response should be made up of the AMF_STRING
2092			* "result", a NULL object and then the response encoded as AMF_NUMBER. On a
2093			* successful response, we will return set the value to number (otherwise number
2094			* will not be changed).
2095			*
2096			* @return 0 if reading the value succeeds, negative value otherwise
2097			*/
2098		✗	static int read_number_result(RTMPPacket *pkt, double *number)
2099			{
2100			// We only need to fit "_result" in this.
2101			uint8_t strbuffer[8];
2102			int stringlen;
2103			double numbuffer;
2104			GetByteContext gbc;
2105
2106		✗	bytestream2_init(&gbc, pkt->data, pkt->size);
2107
2108			// Value 1/4: "_result" as AMF_STRING
2109		✗	if (ff_amf_read_string(&gbc, strbuffer, sizeof(strbuffer), &stringlen))
2110		✗	return AVERROR_INVALIDDATA;
2111		✗	if (strcmp(strbuffer, "_result"))
2112		✗	return AVERROR_INVALIDDATA;
2113			// Value 2/4: The callee reference number
2114		✗	if (ff_amf_read_number(&gbc, &numbuffer))
2115		✗	return AVERROR_INVALIDDATA;
2116			// Value 3/4: Null
2117		✗	if (ff_amf_read_null(&gbc))
2118		✗	return AVERROR_INVALIDDATA;
2119			// Value 4/4: The response as AMF_NUMBER
2120		✗	if (ff_amf_read_number(&gbc, &numbuffer))
2121		✗	return AVERROR_INVALIDDATA;
2122			else
2123		✗	*number = numbuffer;
2124
2125		✗	return 0;
2126			}
2127
2128		✗	static int handle_invoke_result(URLContext *s, RTMPPacket *pkt)
2129			{
2130		✗	RTMPContext *rt = s->priv_data;
2131		✗	char *tracked_method = NULL;
2132		✗	int ret = 0;
2133
2134		✗	if ((ret = find_tracked_method(s, pkt, 10, &tracked_method)) < 0)
2135		✗	return ret;
2136
2137		✗	if (!tracked_method) {
2138			/* Ignore this reply when the current method is not tracked. */
2139		✗	return ret;
2140			}
2141
2142		✗	if (!strcmp(tracked_method, "connect")) {
2143		✗	if (!rt->is_input) {
2144		✗	if ((ret = gen_release_stream(s, rt)) < 0)
2145		✗	goto fail;
2146
2147		✗	if ((ret = gen_fcpublish_stream(s, rt)) < 0)
2148		✗	goto fail;
2149			} else {
2150		✗	if ((ret = gen_window_ack_size(s, rt)) < 0)
2151		✗	goto fail;
2152			}
2153
2154		✗	if ((ret = gen_create_stream(s, rt)) < 0)
2155		✗	goto fail;
2156
2157		✗	if (rt->is_input) {
2158			/* Send the FCSubscribe command when the name of live
2159			* stream is defined by the user or if it's a live stream. */
2160		✗	if (rt->subscribe) {
2161		✗	if ((ret = gen_fcsubscribe_stream(s, rt, rt->subscribe)) < 0)
2162		✗	goto fail;
2163		✗	} else if (rt->live == -1) {
2164		✗	if ((ret = gen_fcsubscribe_stream(s, rt, rt->playpath)) < 0)
2165		✗	goto fail;
2166			}
2167			}
2168		✗	} else if (!strcmp(tracked_method, "createStream")) {
2169			double stream_id;
2170		✗	if (read_number_result(pkt, &stream_id)) {
2171		✗	av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n");
2172			} else {
2173		✗	rt->stream_id = stream_id;
2174			}
2175
2176		✗	if (!rt->is_input) {
2177		✗	if ((ret = gen_publish(s, rt)) < 0)
2178		✗	goto fail;
2179			} else {
2180		✗	if (rt->live != -1) {
2181		✗	if ((ret = gen_get_stream_length(s, rt)) < 0)
2182		✗	goto fail;
2183			}
2184		✗	if ((ret = gen_play(s, rt)) < 0)
2185		✗	goto fail;
2186		✗	if ((ret = gen_buffer_time(s, rt)) < 0)
2187		✗	goto fail;
2188			}
2189		✗	} else if (!strcmp(tracked_method, "getStreamLength")) {
2190		✗	if (read_number_result(pkt, &rt->duration)) {
2191		✗	av_log(s, AV_LOG_WARNING, "Unexpected reply on getStreamLength()\n");
2192			}
2193			}
2194
2195		✗	fail:
2196		✗	av_free(tracked_method);
2197		✗	return ret;
2198			}
2199
2200		✗	static int handle_invoke_status(URLContext *s, RTMPPacket *pkt)
2201			{
2202		✗	RTMPContext *rt = s->priv_data;
2203		✗	const uint8_t *data_end = pkt->data + pkt->size;
2204		✗	const uint8_t *ptr = pkt->data + RTMP_HEADER;
2205			uint8_t tmpstr[256];
2206			int i, t;
2207
2208		✗	for (i = 0; i < 2; i++) {
2209		✗	t = ff_amf_tag_size(ptr, data_end);
2210		✗	if (t < 0)
2211		✗	return 1;
2212		✗	ptr += t;
2213			}
2214
2215		✗	t = ff_amf_get_field_value(ptr, data_end, "level", tmpstr, sizeof(tmpstr));
2216		✗	if (!t && !strcmp(tmpstr, "error")) {
2217		✗	t = ff_amf_get_field_value(ptr, data_end,
2218			"description", tmpstr, sizeof(tmpstr));
2219		✗	if (t || !tmpstr[0])
2220		✗	t = ff_amf_get_field_value(ptr, data_end, "code",
2221			tmpstr, sizeof(tmpstr));
2222		✗	if (!t)
2223		✗	av_log(s, AV_LOG_ERROR, "Server error: %s\n", tmpstr);
2224		✗	return -1;
2225			}
2226
2227		✗	t = ff_amf_get_field_value(ptr, data_end, "code", tmpstr, sizeof(tmpstr));
2228		✗	if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING;
2229		✗	if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED;
2230		✗	if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED;
2231		✗	if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING;
2232		✗	if (!t && !strcmp(tmpstr, "NetStream.Seek.Notify")) rt->state = STATE_PLAYING;
2233
2234		✗	return 0;
2235			}
2236
2237		✗	static int handle_invoke(URLContext *s, RTMPPacket *pkt)
2238			{
2239		✗	RTMPContext *rt = s->priv_data;
2240		✗	int ret = 0;
2241
2242			//TODO: check for the messages sent for wrong state?
2243		✗	if (ff_amf_match_string(pkt->data, pkt->size, "_error")) {
2244		✗	if ((ret = handle_invoke_error(s, pkt)) < 0)
2245		✗	return ret;
2246		✗	} else if (ff_amf_match_string(pkt->data, pkt->size, "_result")) {
2247		✗	if ((ret = handle_invoke_result(s, pkt)) < 0)
2248		✗	return ret;
2249		✗	} else if (ff_amf_match_string(pkt->data, pkt->size, "onStatus")) {
2250		✗	if ((ret = handle_invoke_status(s, pkt)) < 0)
2251		✗	return ret;
2252		✗	} else if (ff_amf_match_string(pkt->data, pkt->size, "onBWDone")) {
2253		✗	if ((ret = gen_check_bw(s, rt)) < 0)
2254		✗	return ret;
2255		✗	} else if (ff_amf_match_string(pkt->data, pkt->size, "releaseStream") ||
2256		✗	ff_amf_match_string(pkt->data, pkt->size, "FCPublish") ||
2257		✗	ff_amf_match_string(pkt->data, pkt->size, "publish") ||
2258		✗	ff_amf_match_string(pkt->data, pkt->size, "play") ||
2259		✗	ff_amf_match_string(pkt->data, pkt->size, "_checkbw") ||
2260		✗	ff_amf_match_string(pkt->data, pkt->size, "createStream")) {
2261		✗	if ((ret = send_invoke_response(s, pkt)) < 0)
2262		✗	return ret;
2263			}
2264
2265		✗	return ret;
2266			}
2267
2268		✗	static int update_offset(RTMPContext *rt, int size)
2269			{
2270			int old_flv_size;
2271
2272			// generate packet header and put data into buffer for FLV demuxer
2273		✗	if (rt->flv_off < rt->flv_size) {
2274			// There is old unread data in the buffer, thus append at the end
2275		✗	old_flv_size = rt->flv_size;
2276		✗	rt->flv_size += size;
2277			} else {
2278			// All data has been read, write the new data at the start of the buffer
2279		✗	old_flv_size = 0;
2280		✗	rt->flv_size = size;
2281		✗	rt->flv_off = 0;
2282			}
2283
2284		✗	return old_flv_size;
2285			}
2286
2287		✗	static int append_flv_data(RTMPContext *rt, RTMPPacket *pkt, int skip)
2288			{
2289			int old_flv_size, ret;
2290			PutByteContext pbc;
2291		✗	const uint8_t *data = pkt->data + skip;
2292		✗	const int size = pkt->size - skip;
2293		✗	uint32_t ts = pkt->timestamp;
2294
2295		✗	if (pkt->type == RTMP_PT_AUDIO) {
2296		✗	rt->has_audio = 1;
2297		✗	} else if (pkt->type == RTMP_PT_VIDEO) {
2298		✗	rt->has_video = 1;
2299			}
2300
2301		✗	old_flv_size = update_offset(rt, size + 15);
2302
2303		✗	if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) {
2304		✗	rt->flv_size = rt->flv_off = 0;
2305		✗	return ret;
2306			}
2307		✗	bytestream2_init_writer(&pbc, rt->flv_data, rt->flv_size);
2308		✗	bytestream2_skip_p(&pbc, old_flv_size);
2309		✗	bytestream2_put_byte(&pbc, pkt->type);
2310		✗	bytestream2_put_be24(&pbc, size);
2311		✗	bytestream2_put_be24(&pbc, ts);
2312		✗	bytestream2_put_byte(&pbc, ts >> 24);
2313		✗	bytestream2_put_be24(&pbc, 0);
2314		✗	bytestream2_put_buffer(&pbc, data, size);
2315		✗	bytestream2_put_be32(&pbc, size + RTMP_HEADER);
2316
2317		✗	return 0;
2318			}
2319
2320		✗	static int handle_notify(URLContext *s, RTMPPacket *pkt)
2321			{
2322		✗	RTMPContext *rt = s->priv_data;
2323			uint8_t commandbuffer[64];
2324			char statusmsg[128];
2325		✗	int stringlen, ret, skip = 0;
2326			GetByteContext gbc;
2327
2328		✗	bytestream2_init(&gbc, pkt->data, pkt->size);
2329		✗	if (ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer),
2330			&stringlen))
2331		✗	return AVERROR_INVALIDDATA;
2332
2333		✗	if (!strcmp(commandbuffer, "onMetaData")) {
2334			// metadata properties should be stored in a mixed array
2335		✗	if (bytestream2_get_byte(&gbc) == AMF_DATA_TYPE_MIXEDARRAY) {
2336			// We have found a metaData Array so flv can determine the streams
2337			// from this.
2338		✗	rt->received_metadata = 1;
2339			// skip 32-bit max array index
2340		✗	bytestream2_skip(&gbc, 4);
2341		✗	while (bytestream2_get_bytes_left(&gbc) > 3) {
2342		✗	if (ff_amf_get_string(&gbc, statusmsg, sizeof(statusmsg),
2343			&stringlen))
2344		✗	return AVERROR_INVALIDDATA;
2345			// We do not care about the content of the property (yet).
2346		✗	stringlen = ff_amf_tag_size(gbc.buffer, gbc.buffer_end);
2347		✗	if (stringlen < 0)
2348		✗	return AVERROR_INVALIDDATA;
2349		✗	bytestream2_skip(&gbc, stringlen);
2350
2351			// The presence of the following properties indicates that the
2352			// respective streams are present.
2353		✗	if (!strcmp(statusmsg, "videocodecid")) {
2354		✗	rt->has_video = 1;
2355			}
2356		✗	if (!strcmp(statusmsg, "audiocodecid")) {
2357		✗	rt->has_audio = 1;
2358			}
2359			}
2360		✗	if (bytestream2_get_be24(&gbc) != AMF_END_OF_OBJECT)
2361		✗	return AVERROR_INVALIDDATA;
2362			}
2363			}
2364
2365			// Skip the @setDataFrame string and validate it is a notification
2366		✗	if (!strcmp(commandbuffer, "@setDataFrame")) {
2367		✗	skip = gbc.buffer - pkt->data;
2368		✗	ret = ff_amf_read_string(&gbc, statusmsg,
2369			sizeof(statusmsg), &stringlen);
2370		✗	if (ret < 0)
2371		✗	return AVERROR_INVALIDDATA;
2372			}
2373
2374		✗	return append_flv_data(rt, pkt, skip);
2375			}
2376
2377			/**
2378			* Parse received packet and possibly perform some action depending on
2379			* the packet contents.
2380			* @return 0 for no errors, negative values for serious errors which prevent
2381			* further communications, positive values for uncritical errors
2382			*/
2383		✗	static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt)
2384			{
2385			int ret;
2386
2387			#ifdef DEBUG
2388			ff_rtmp_packet_dump(s, pkt);
2389			#endif
2390
2391		✗	switch (pkt->type) {
2392		✗	case RTMP_PT_BYTES_READ:
2393		✗	av_log(s, AV_LOG_TRACE, "received bytes read report\n");
2394		✗	break;
2395		✗	case RTMP_PT_CHUNK_SIZE:
2396		✗	if ((ret = handle_chunk_size(s, pkt)) < 0)
2397		✗	return ret;
2398		✗	break;
2399		✗	case RTMP_PT_USER_CONTROL:
2400		✗	if ((ret = handle_user_control(s, pkt)) < 0)
2401		✗	return ret;
2402		✗	break;
2403		✗	case RTMP_PT_SET_PEER_BW:
2404		✗	if ((ret = handle_set_peer_bw(s, pkt)) < 0)
2405		✗	return ret;
2406		✗	break;
2407		✗	case RTMP_PT_WINDOW_ACK_SIZE:
2408		✗	if ((ret = handle_window_ack_size(s, pkt)) < 0)
2409		✗	return ret;
2410		✗	break;
2411		✗	case RTMP_PT_INVOKE:
2412		✗	if ((ret = handle_invoke(s, pkt)) < 0)
2413		✗	return ret;
2414		✗	break;
2415		✗	case RTMP_PT_VIDEO:
2416			case RTMP_PT_AUDIO:
2417			case RTMP_PT_METADATA:
2418			case RTMP_PT_NOTIFY:
2419			/* Audio, Video and Metadata packets are parsed in get_packet() */
2420		✗	break;
2421		✗	default:
2422		✗	av_log(s, AV_LOG_VERBOSE, "Unknown packet type received 0x%02X\n", pkt->type);
2423		✗	break;
2424			}
2425		✗	return 0;
2426			}
2427
2428		✗	static int handle_metadata(RTMPContext *rt, RTMPPacket *pkt)
2429			{
2430			int ret, old_flv_size, type;
2431			const uint8_t *next;
2432			uint8_t *p;
2433			uint32_t size;
2434		✗	uint32_t ts, cts, pts = 0;
2435
2436		✗	old_flv_size = update_offset(rt, pkt->size);
2437
2438		✗	if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) {
2439		✗	rt->flv_size = rt->flv_off = 0;
2440		✗	return ret;
2441			}
2442
2443		✗	next = pkt->data;
2444		✗	p = rt->flv_data + old_flv_size;
2445
2446			/* copy data while rewriting timestamps */
2447		✗	ts = pkt->timestamp;
2448
2449		✗	while (next - pkt->data < pkt->size - RTMP_HEADER) {
2450		✗	type = bytestream_get_byte(&next);
2451		✗	size = bytestream_get_be24(&next);
2452		✗	cts = bytestream_get_be24(&next);
2453		✗	cts |= bytestream_get_byte(&next) << 24;
2454		✗	if (!pts)
2455		✗	pts = cts;
2456		✗	ts += cts - pts;
2457		✗	pts = cts;
2458		✗	if (size + 3 + 4 > pkt->data + pkt->size - next)
2459		✗	break;
2460		✗	bytestream_put_byte(&p, type);
2461		✗	bytestream_put_be24(&p, size);
2462		✗	bytestream_put_be24(&p, ts);
2463		✗	bytestream_put_byte(&p, ts >> 24);
2464		✗	memcpy(p, next, size + 3 + 4);
2465		✗	p += size + 3;
2466		✗	bytestream_put_be32(&p, size + RTMP_HEADER);
2467		✗	next += size + 3 + 4;
2468			}
2469		✗	if (p != rt->flv_data + rt->flv_size) {
2470		✗	av_log(rt, AV_LOG_WARNING, "Incomplete flv packets in "
2471			"RTMP_PT_METADATA packet\n");
2472		✗	rt->flv_size = p - rt->flv_data;
2473			}
2474
2475		✗	return 0;
2476			}
2477
2478			/**
2479			* Interact with the server by receiving and sending RTMP packets until
2480			* there is some significant data (media data or expected status notification).
2481			*
2482			* @param s reading context
2483			* @param for_header non-zero value tells function to work until it
2484			* gets notification from the server that playing has been started,
2485			* otherwise function will work until some media data is received (or
2486			* an error happens)
2487			* @return 0 for successful operation, negative value in case of error
2488			*/
2489		✗	static int get_packet(URLContext *s, int for_header)
2490			{
2491		✗	RTMPContext *rt = s->priv_data;
2492			int ret;
2493
2494		✗	if (rt->state == STATE_STOPPED)
2495		✗	return AVERROR_EOF;
2496
2497		✗	for (;;) {
2498		✗	RTMPPacket rpkt = { 0 };
2499		✗	if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt,
2500			rt->in_chunk_size, &rt->prev_pkt[0],
2501			&rt->nb_prev_pkt[0])) <= 0) {
2502		✗	if (ret == 0) {
2503		✗	return AVERROR(EAGAIN);
2504			} else {
2505		✗	return AVERROR(EIO);
2506			}
2507			}
2508
2509			// Track timestamp for later use
2510		✗	rt->last_timestamp = rpkt.timestamp;
2511
2512		✗	rt->bytes_read += ret;
2513		✗	if (rt->bytes_read - rt->last_bytes_read > rt->receive_report_size) {
2514		✗	av_log(s, AV_LOG_DEBUG, "Sending bytes read report\n");
2515		✗	if ((ret = gen_bytes_read(s, rt, rpkt.timestamp + 1)) < 0) {
2516		✗	ff_rtmp_packet_destroy(&rpkt);
2517		✗	return ret;
2518			}
2519		✗	rt->last_bytes_read = rt->bytes_read;
2520			}
2521
2522		✗	ret = rtmp_parse_result(s, rt, &rpkt);
2523
2524			// At this point we must check if we are in the seek state and continue
2525			// with the next packet. handle_invoke will get us out of this state
2526			// when the right message is encountered
2527		✗	if (rt->state == STATE_SEEKING) {
2528		✗	ff_rtmp_packet_destroy(&rpkt);
2529			// We continue, let the natural flow of things happen:
2530			// AVERROR(EAGAIN) or handle_invoke gets us out of here
2531		✗	continue;
2532			}
2533
2534		✗	if (ret < 0) {//serious error in current packet
2535		✗	ff_rtmp_packet_destroy(&rpkt);
2536		✗	return ret;
2537			}
2538		✗	if (rt->do_reconnect && for_header) {
2539		✗	ff_rtmp_packet_destroy(&rpkt);
2540		✗	return 0;
2541			}
2542		✗	if (rt->state == STATE_STOPPED) {
2543		✗	ff_rtmp_packet_destroy(&rpkt);
2544		✗	return AVERROR_EOF;
2545			}
2546		✗	if (for_header && (rt->state == STATE_PLAYING ||
2547		✗	rt->state == STATE_PUBLISHING ||
2548		✗	rt->state == STATE_SENDING ||
2549		✗	rt->state == STATE_RECEIVING)) {
2550		✗	ff_rtmp_packet_destroy(&rpkt);
2551		✗	return 0;
2552			}
2553		✗	if (!rpkt.size || !rt->is_input) {
2554		✗	ff_rtmp_packet_destroy(&rpkt);
2555		✗	continue;
2556			}
2557		✗	if (rpkt.type == RTMP_PT_VIDEO || rpkt.type == RTMP_PT_AUDIO) {
2558		✗	ret = append_flv_data(rt, &rpkt, 0);
2559		✗	ff_rtmp_packet_destroy(&rpkt);
2560		✗	return ret;
2561		✗	} else if (rpkt.type == RTMP_PT_NOTIFY) {
2562		✗	ret = handle_notify(s, &rpkt);
2563		✗	ff_rtmp_packet_destroy(&rpkt);
2564		✗	return ret;
2565		✗	} else if (rpkt.type == RTMP_PT_METADATA) {
2566		✗	ret = handle_metadata(rt, &rpkt);
2567		✗	ff_rtmp_packet_destroy(&rpkt);
2568		✗	return ret;
2569			}
2570		✗	ff_rtmp_packet_destroy(&rpkt);
2571			}
2572			}
2573
2574		✗	static int rtmp_close(URLContext *h)
2575			{
2576		✗	RTMPContext *rt = h->priv_data;
2577		✗	int ret = 0, i, j;
2578
2579		✗	if (!rt->is_input) {
2580		✗	rt->flv_data = NULL;
2581		✗	if (rt->out_pkt.size)
2582		✗	ff_rtmp_packet_destroy(&rt->out_pkt);
2583		✗	if (rt->state > STATE_FCPUBLISH)
2584		✗	ret = gen_fcunpublish_stream(h, rt);
2585			}
2586		✗	if (rt->state > STATE_HANDSHAKED)
2587		✗	ret = gen_delete_stream(h, rt);
2588		✗	for (i = 0; i < 2; i++) {
2589		✗	for (j = 0; j < rt->nb_prev_pkt[i]; j++)
2590		✗	ff_rtmp_packet_destroy(&rt->prev_pkt[i][j]);
2591		✗	av_freep(&rt->prev_pkt[i]);
2592			}
2593
2594		✗	free_tracked_methods(rt);
2595		✗	av_freep(&rt->flv_data);
2596		✗	ffurl_closep(&rt->stream);
2597		✗	return ret;
2598			}
2599
2600			/**
2601			* Insert a fake onMetadata packet into the FLV stream to notify the FLV
2602			* demuxer about the duration of the stream.
2603			*
2604			* This should only be done if there was no real onMetadata packet sent by the
2605			* server at the start of the stream and if we were able to retrieve a valid
2606			* duration via a getStreamLength call.
2607			*
2608			* @return 0 for successful operation, negative value in case of error
2609			*/
2610		✗	static int inject_fake_duration_metadata(RTMPContext *rt)
2611			{
2612			// We need to insert the metadata packet directly after the FLV
2613			// header, i.e. we need to move all other already read data by the
2614			// size of our fake metadata packet.
2615
2616			uint8_t* p;
2617			// Keep old flv_data pointer
2618		✗	uint8_t* old_flv_data = rt->flv_data;
2619			// Allocate a new flv_data pointer with enough space for the additional package
2620		✗	if (!(rt->flv_data = av_malloc(rt->flv_size + 55))) {
2621		✗	rt->flv_data = old_flv_data;
2622		✗	return AVERROR(ENOMEM);
2623			}
2624
2625			// Copy FLV header
2626		✗	memcpy(rt->flv_data, old_flv_data, 13);
2627			// Copy remaining packets
2628		✗	memcpy(rt->flv_data + 13 + 55, old_flv_data + 13, rt->flv_size - 13);
2629			// Increase the size by the injected packet
2630		✗	rt->flv_size += 55;
2631			// Delete the old FLV data
2632		✗	av_freep(&old_flv_data);
2633
2634		✗	p = rt->flv_data + 13;
2635		✗	bytestream_put_byte(&p, FLV_TAG_TYPE_META);
2636		✗	bytestream_put_be24(&p, 40); // size of data part (sum of all parts below)
2637		✗	bytestream_put_be24(&p, 0); // timestamp
2638		✗	bytestream_put_be32(&p, 0); // reserved
2639
2640			// first event name as a string
2641		✗	bytestream_put_byte(&p, AMF_DATA_TYPE_STRING);
2642			// "onMetaData" as AMF string
2643		✗	bytestream_put_be16(&p, 10);
2644		✗	bytestream_put_buffer(&p, "onMetaData", 10);
2645
2646			// mixed array (hash) with size and string/type/data tuples
2647		✗	bytestream_put_byte(&p, AMF_DATA_TYPE_MIXEDARRAY);
2648		✗	bytestream_put_be32(&p, 1); // metadata_count
2649
2650			// "duration" as AMF string
2651		✗	bytestream_put_be16(&p, 8);
2652		✗	bytestream_put_buffer(&p, "duration", 8);
2653		✗	bytestream_put_byte(&p, AMF_DATA_TYPE_NUMBER);
2654		✗	bytestream_put_be64(&p, av_double2int(rt->duration));
2655
2656			// Finalise object
2657		✗	bytestream_put_be16(&p, 0); // Empty string
2658		✗	bytestream_put_byte(&p, AMF_END_OF_OBJECT);
2659		✗	bytestream_put_be32(&p, 40 + RTMP_HEADER); // size of data part (sum of all parts above)
2660
2661		✗	return 0;
2662			}
2663
2664			/**
2665			* Open RTMP connection and verify that the stream can be played.
2666			*
2667			* URL syntax: rtmp://server[:port][/app][/playpath]
2668			* where 'app' is first one or two directories in the path
2669			* (e.g. /ondemand/, /flash/live/, etc.)
2670			* and 'playpath' is a file name (the rest of the path,
2671			* may be prefixed with "mp4:")
2672			*/
2673		✗	static int rtmp_open(URLContext *s, const char *uri, int flags, AVDictionary **opts)
2674			{
2675		✗	RTMPContext *rt = s->priv_data;
2676			char proto[8], hostname[256], path[1024], auth[100], *fname;
2677			char *old_app, *qmark, *n, fname_buffer[1024];
2678			uint8_t buf[2048];
2679			int port;
2680			int ret;
2681
2682		✗	if (rt->listen_timeout > 0)
2683		✗	rt->listen = 1;
2684
2685		✗	rt->is_input = !(flags & AVIO_FLAG_WRITE);
2686
2687		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth),
2688			hostname, sizeof(hostname), &port,
2689		✗	path, sizeof(path), s->filename);
2690
2691		✗	n = strchr(path, ' ');
2692		✗	if (n) {
2693		✗	av_log(s, AV_LOG_WARNING,
2694			"Detected librtmp style URL parameters, these aren't supported "
2695			"by the libavformat internal RTMP handler currently enabled. "
2696			"See the documentation for the correct way to pass parameters.\n");
2697		✗	*n = '\0'; // Trim not supported part
2698			}
2699
2700		✗	if (auth[0]) {
2701		✗	char *ptr = strchr(auth, ':');
2702		✗	if (ptr) {
2703		✗	*ptr = '\0';
2704		✗	av_strlcpy(rt->username, auth, sizeof(rt->username));
2705		✗	av_strlcpy(rt->password, ptr + 1, sizeof(rt->password));
2706			}
2707			}
2708
2709		✗	if (rt->listen && strcmp(proto, "rtmp")) {
2710		✗	av_log(s, AV_LOG_ERROR, "rtmp_listen not available for %s\n",
2711			proto);
2712		✗	return AVERROR(EINVAL);
2713			}
2714		✗	if (!strcmp(proto, "rtmpt") || !strcmp(proto, "rtmpts")) {
2715		✗	if (!strcmp(proto, "rtmpts"))
2716		✗	av_dict_set(opts, "ffrtmphttp_tls", "1", AV_DICT_MATCH_CASE);
2717
2718			/* open the http tunneling connection */
2719		✗	ff_url_join(buf, sizeof(buf), "ffrtmphttp", NULL, hostname, port, NULL);
2720		✗	} else if (!strcmp(proto, "rtmps")) {
2721			/* open the tls connection */
2722		✗	if (port < 0)
2723		✗	port = RTMPS_DEFAULT_PORT;
2724		✗	ff_url_join(buf, sizeof(buf), "tls", NULL, hostname, port, NULL);
2725		✗	} else if (!strcmp(proto, "rtmpe") || (!strcmp(proto, "rtmpte"))) {
2726		✗	if (!strcmp(proto, "rtmpte"))
2727		✗	av_dict_set(opts, "ffrtmpcrypt_tunneling", "1", 1);
2728
2729			/* open the encrypted connection */
2730		✗	ff_url_join(buf, sizeof(buf), "ffrtmpcrypt", NULL, hostname, port, NULL);
2731		✗	rt->encrypted = 1;
2732			} else {
2733			/* open the tcp connection */
2734		✗	if (port < 0)
2735		✗	port = RTMP_DEFAULT_PORT;
2736		✗	if (rt->listen)
2737		✗	ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port,
2738			"?listen&listen_timeout=%d&tcp_nodelay=%d",
2739		✗	rt->listen_timeout < 0 ? -1 : rt->listen_timeout * 1000,
2740			rt->tcp_nodelay);
2741			else
2742		✗	ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, "?tcp_nodelay=%d", rt->tcp_nodelay);
2743			}
2744
2745		✗	reconnect:
2746		✗	if ((ret = ffurl_open_whitelist(&rt->stream, buf, AVIO_FLAG_READ_WRITE,
2747		✗	&s->interrupt_callback, opts,
2748			s->protocol_whitelist, s->protocol_blacklist, s)) < 0) {
2749		✗	av_log(s , AV_LOG_ERROR, "Cannot open connection %s\n", buf);
2750		✗	goto fail;
2751			}
2752
2753		✗	if (rt->swfverify) {
2754		✗	if ((ret = rtmp_calc_swfhash(s)) < 0)
2755		✗	goto fail;
2756			}
2757
2758		✗	rt->state = STATE_START;
2759		✗	if (!rt->listen && (ret = rtmp_handshake(s, rt)) < 0)
2760		✗	goto fail;
2761		✗	if (rt->listen && (ret = rtmp_server_handshake(s, rt)) < 0)
2762		✗	goto fail;
2763
2764		✗	rt->out_chunk_size = 128;
2765		✗	rt->in_chunk_size = 128; // Probably overwritten later
2766		✗	rt->state = STATE_HANDSHAKED;
2767
2768			// Keep the application name when it has been defined by the user.
2769		✗	old_app = rt->app;
2770
2771		✗	rt->app = av_malloc(APP_MAX_LENGTH);
2772		✗	if (!rt->app) {
2773		✗	ret = AVERROR(ENOMEM);
2774		✗	goto fail;
2775			}
2776
2777			//extract "app" part from path
2778		✗	qmark = strchr(path, '?');
2779		✗	if (qmark && strstr(qmark, "slist=")) {
2780			char* amp;
2781			// After slist we have the playpath, the full path is used as app
2782		✗	av_strlcpy(rt->app, path + 1, APP_MAX_LENGTH);
2783		✗	fname = strstr(path, "slist=") + 6;
2784			// Strip any further query parameters from fname
2785		✗	amp = strchr(fname, '&');
2786		✗	if (amp) {
2787		✗	av_strlcpy(fname_buffer, fname, FFMIN(amp - fname + 1,
2788			sizeof(fname_buffer)));
2789		✗	fname = fname_buffer;
2790			}
2791		✗	} else if (!strncmp(path, "/ondemand/", 10)) {
2792		✗	fname = path + 10;
2793		✗	memcpy(rt->app, "ondemand", 9);
2794			} else {
2795		✗	char *next = *path ? path + 1 : path;
2796		✗	char *p = strchr(next, '/');
2797		✗	if (!p) {
2798		✗	if (old_app) {
2799			// If name of application has been defined by the user, assume that
2800			// playpath is provided in the URL
2801		✗	fname = next;
2802			} else {
2803		✗	fname = NULL;
2804		✗	av_strlcpy(rt->app, next, APP_MAX_LENGTH);
2805			}
2806			} else {
2807			// make sure we do not mismatch a playpath for an application instance
2808		✗	char *c = strchr(p + 1, ':');
2809		✗	fname = strchr(p + 1, '/');
2810		✗	if (!fname || (c && c < fname)) {
2811		✗	fname = p + 1;
2812		✗	av_strlcpy(rt->app, path + 1, FFMIN(p - path, APP_MAX_LENGTH));
2813			} else {
2814		✗	fname++;
2815		✗	av_strlcpy(rt->app, path + 1, FFMIN(fname - path - 1, APP_MAX_LENGTH));
2816			}
2817			}
2818			}
2819
2820		✗	if (old_app) {
2821			// The name of application has been defined by the user, override it.
2822		✗	if (strlen(old_app) >= APP_MAX_LENGTH) {
2823		✗	ret = AVERROR(EINVAL);
2824		✗	goto fail;
2825			}
2826		✗	av_free(rt->app);
2827		✗	rt->app = old_app;
2828			}
2829
2830		✗	if (!rt->playpath) {
2831		✗	int max_len = 1;
2832		✗	if (fname)
2833		✗	max_len = strlen(fname) + 5; // add prefix "mp4:"
2834		✗	rt->playpath = av_malloc(max_len);
2835		✗	if (!rt->playpath) {
2836		✗	ret = AVERROR(ENOMEM);
2837		✗	goto fail;
2838			}
2839
2840		✗	if (fname) {
2841		✗	int len = strlen(fname);
2842		✗	if (!strchr(fname, ':') && len >= 4 &&
2843		✗	(!strcmp(fname + len - 4, ".f4v") ||
2844		✗	!strcmp(fname + len - 4, ".mp4"))) {
2845		✗	memcpy(rt->playpath, "mp4:", 5);
2846			} else {
2847		✗	if (len >= 4 && !strcmp(fname + len - 4, ".flv"))
2848		✗	fname[len - 4] = '\0';
2849		✗	rt->playpath[0] = 0;
2850			}
2851		✗	av_strlcat(rt->playpath, fname, max_len);
2852			} else {
2853		✗	rt->playpath[0] = '\0';
2854			}
2855			}
2856
2857		✗	if (!rt->tcurl) {
2858		✗	rt->tcurl = av_malloc(TCURL_MAX_LENGTH);
2859		✗	if (!rt->tcurl) {
2860		✗	ret = AVERROR(ENOMEM);
2861		✗	goto fail;
2862			}
2863		✗	ff_url_join(rt->tcurl, TCURL_MAX_LENGTH, proto, NULL, hostname,
2864			port, "/%s", rt->app);
2865			}
2866
2867		✗	if (!rt->flashver) {
2868		✗	rt->flashver = av_malloc(FLASHVER_MAX_LENGTH);
2869		✗	if (!rt->flashver) {
2870		✗	ret = AVERROR(ENOMEM);
2871		✗	goto fail;
2872			}
2873		✗	if (rt->is_input) {
2874		✗	snprintf(rt->flashver, FLASHVER_MAX_LENGTH, "%s %d,%d,%d,%d",
2875			RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1, RTMP_CLIENT_VER2,
2876			RTMP_CLIENT_VER3, RTMP_CLIENT_VER4);
2877			} else {
2878		✗	snprintf(rt->flashver, FLASHVER_MAX_LENGTH,
2879			"FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT);
2880			}
2881			}
2882		✗	if ( strlen(rt->flashver) > FLASHVER_MAX_LENGTH
2883		✗	|| strlen(rt->tcurl ) > TCURL_MAX_LENGTH
2884			) {
2885		✗	ret = AVERROR(EINVAL);
2886		✗	goto fail;
2887			}
2888
2889		✗	rt->receive_report_size = 1048576;
2890		✗	rt->bytes_read = 0;
2891		✗	rt->has_audio = 0;
2892		✗	rt->has_video = 0;
2893		✗	rt->received_metadata = 0;
2894		✗	rt->last_bytes_read = 0;
2895		✗	rt->max_sent_unacked = 2500000;
2896		✗	rt->duration = 0;
2897
2898		✗	av_log(s, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n",
2899			proto, path, rt->app, rt->playpath);
2900		✗	if (!rt->listen) {
2901		✗	if ((ret = gen_connect(s, rt)) < 0)
2902		✗	goto fail;
2903			} else {
2904		✗	if ((ret = read_connect(s, s->priv_data)) < 0)
2905		✗	goto fail;
2906			}
2907
2908			do {
2909		✗	ret = get_packet(s, 1);
2910		✗	} while (ret == AVERROR(EAGAIN));
2911		✗	if (ret < 0)
2912		✗	goto fail;
2913
2914		✗	if (rt->do_reconnect) {
2915			int i;
2916		✗	ffurl_closep(&rt->stream);
2917		✗	rt->do_reconnect = 0;
2918		✗	rt->nb_invokes = 0;
2919		✗	for (i = 0; i < 2; i++)
2920		✗	memset(rt->prev_pkt[i], 0,
2921		✗	sizeof(**rt->prev_pkt) * rt->nb_prev_pkt[i]);
2922		✗	free_tracked_methods(rt);
2923		✗	goto reconnect;
2924			}
2925
2926		✗	if (rt->is_input) {
2927			// generate FLV header for demuxer
2928		✗	rt->flv_size = 13;
2929		✗	if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0)
2930		✗	goto fail;
2931		✗	rt->flv_off = 0;
2932		✗	memcpy(rt->flv_data, "FLV\1\0\0\0\0\011\0\0\0\0", rt->flv_size);
2933
2934			// Read packets until we reach the first A/V packet or read metadata.
2935			// If there was a metadata package in front of the A/V packets, we can
2936			// build the FLV header from this. If we do not receive any metadata,
2937			// the FLV decoder will allocate the needed streams when their first
2938			// audio or video packet arrives.
2939		✗	while (!rt->has_audio && !rt->has_video && !rt->received_metadata) {
2940		✗	if ((ret = get_packet(s, 0)) < 0)
2941		✗	goto fail;
2942			}
2943
2944			// Either after we have read the metadata or (if there is none) the
2945			// first packet of an A/V stream, we have a better knowledge about the
2946			// streams, so set the FLV header accordingly.
2947		✗	if (rt->has_audio) {
2948		✗	rt->flv_data[4] |= FLV_HEADER_FLAG_HASAUDIO;
2949			}
2950		✗	if (rt->has_video) {
2951		✗	rt->flv_data[4] |= FLV_HEADER_FLAG_HASVIDEO;
2952			}
2953
2954			// If we received the first packet of an A/V stream and no metadata but
2955			// the server returned a valid duration, create a fake metadata packet
2956			// to inform the FLV decoder about the duration.
2957		✗	if (!rt->received_metadata && rt->duration > 0) {
2958		✗	if ((ret = inject_fake_duration_metadata(rt)) < 0)
2959		✗	goto fail;
2960			}
2961			} else {
2962		✗	rt->flv_size = 0;
2963		✗	rt->flv_data = NULL;
2964		✗	rt->flv_off = 0;
2965		✗	rt->skip_bytes = 13;
2966			}
2967
2968		✗	s->max_packet_size = rt->stream->max_packet_size;
2969		✗	s->is_streamed = 1;
2970		✗	return 0;
2971
2972		✗	fail:
2973		✗	rtmp_close(s);
2974		✗	return ret;
2975			}
2976
2977		✗	static int rtmp_read(URLContext *s, uint8_t *buf, int size)
2978			{
2979		✗	RTMPContext *rt = s->priv_data;
2980		✗	int orig_size = size;
2981			int ret;
2982
2983		✗	while (size > 0) {
2984		✗	int data_left = rt->flv_size - rt->flv_off;
2985
2986		✗	if (data_left >= size) {
2987		✗	memcpy(buf, rt->flv_data + rt->flv_off, size);
2988		✗	rt->flv_off += size;
2989		✗	return orig_size;
2990			}
2991		✗	if (data_left > 0) {
2992		✗	memcpy(buf, rt->flv_data + rt->flv_off, data_left);
2993		✗	buf += data_left;
2994		✗	size -= data_left;
2995		✗	rt->flv_off = rt->flv_size;
2996		✗	return data_left;
2997			}
2998		✗	if ((ret = get_packet(s, 0)) < 0)
2999		✗	return ret;
3000			}
3001		✗	return orig_size;
3002			}
3003
3004		✗	static int64_t rtmp_seek(void *opaque, int stream_index, int64_t timestamp,
3005			int flags)
3006			{
3007		✗	URLContext *s = opaque;
3008		✗	RTMPContext *rt = s->priv_data;
3009			int ret;
3010		✗	av_log(s, AV_LOG_DEBUG,
3011			"Seek on stream index %d at timestamp %"PRId64" with flags %08x\n",
3012			stream_index, timestamp, flags);
3013		✗	if ((ret = gen_seek(s, rt, timestamp)) < 0) {
3014		✗	av_log(s, AV_LOG_ERROR,
3015			"Unable to send seek command on stream index %d at timestamp "
3016			"%"PRId64" with flags %08x\n",
3017			stream_index, timestamp, flags);
3018		✗	return ret;
3019			}
3020		✗	rt->flv_off = rt->flv_size;
3021		✗	rt->state = STATE_SEEKING;
3022		✗	return timestamp;
3023			}
3024
3025		✗	static int rtmp_pause(void *opaque, int pause)
3026			{
3027		✗	URLContext *s = opaque;
3028		✗	RTMPContext *rt = s->priv_data;
3029			int ret;
3030		✗	av_log(s, AV_LOG_DEBUG, "Pause at timestamp %d\n",
3031			rt->last_timestamp);
3032		✗	if ((ret = gen_pause(s, rt, pause, rt->last_timestamp)) < 0) {
3033		✗	av_log(s, AV_LOG_ERROR, "Unable to send pause command at timestamp %d\n",
3034			rt->last_timestamp);
3035		✗	return ret;
3036			}
3037		✗	return 0;
3038			}
3039
3040		✗	static int rtmp_write(URLContext *s, const uint8_t *buf, int size)
3041			{
3042		✗	RTMPContext *rt = s->priv_data;
3043		✗	int size_temp = size;
3044			int pktsize, pkttype, copy;
3045			uint32_t ts;
3046		✗	const uint8_t *buf_temp = buf;
3047			uint8_t c;
3048			int ret;
3049
3050			do {
3051		✗	if (rt->skip_bytes) {
3052		✗	int skip = FFMIN(rt->skip_bytes, size_temp);
3053		✗	buf_temp += skip;
3054		✗	size_temp -= skip;
3055		✗	rt->skip_bytes -= skip;
3056		✗	continue;
3057			}
3058
3059		✗	if (rt->flv_header_bytes < RTMP_HEADER) {
3060		✗	const uint8_t *header = rt->flv_header;
3061		✗	int channel = RTMP_AUDIO_CHANNEL;
3062
3063		✗	copy = FFMIN(RTMP_HEADER - rt->flv_header_bytes, size_temp);
3064		✗	bytestream_get_buffer(&buf_temp, rt->flv_header + rt->flv_header_bytes, copy);
3065		✗	rt->flv_header_bytes += copy;
3066		✗	size_temp -= copy;
3067		✗	if (rt->flv_header_bytes < RTMP_HEADER)
3068		✗	break;
3069
3070		✗	pkttype = bytestream_get_byte(&header);
3071		✗	pktsize = bytestream_get_be24(&header);
3072		✗	ts = bytestream_get_be24(&header);
3073		✗	ts |= bytestream_get_byte(&header) << 24;
3074		✗	bytestream_get_be24(&header);
3075		✗	rt->flv_size = pktsize;
3076
3077		✗	if (pkttype == RTMP_PT_VIDEO)
3078		✗	channel = RTMP_VIDEO_CHANNEL;
3079
3080		✗	if (((pkttype == RTMP_PT_VIDEO || pkttype == RTMP_PT_AUDIO) && ts == 0) ||
3081			pkttype == RTMP_PT_NOTIFY) {
3082		✗	if ((ret = ff_rtmp_check_alloc_array(&rt->prev_pkt[1],
3083			&rt->nb_prev_pkt[1],
3084			channel)) < 0)
3085		✗	return ret;
3086			// Force sending a full 12 bytes header by clearing the
3087			// channel id, to make it not match a potential earlier
3088			// packet in the same channel.
3089		✗	rt->prev_pkt[1][channel].channel_id = 0;
3090			}
3091
3092			//this can be a big packet, it's better to send it right here
3093		✗	if ((ret = ff_rtmp_packet_create(&rt->out_pkt, channel,
3094			pkttype, ts, pktsize)) < 0)
3095		✗	return ret;
3096
3097			// If rt->listen, then we're running as a a server and should
3098			// use the ID that we've sent in Stream Begin and in the
3099			// _result to createStream.
3100			// Otherwise, we're running as a client and should use the ID
3101			// that we've received in the createStream from the server.
3102		✗	rt->out_pkt.extra = (rt->listen) ? rt->nb_streamid : rt->stream_id;
3103		✗	rt->flv_data = rt->out_pkt.data;
3104			}
3105
3106		✗	copy = FFMIN(rt->flv_size - rt->flv_off, size_temp);
3107		✗	bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, copy);
3108		✗	rt->flv_off += copy;
3109		✗	size_temp -= copy;
3110
3111		✗	if (rt->flv_off == rt->flv_size) {
3112		✗	rt->skip_bytes = 4;
3113
3114		✗	if (rt->out_pkt.type == RTMP_PT_NOTIFY) {
3115			// For onMetaData and |RtmpSampleAccess packets, we want
3116			// @setDataFrame prepended to the packet before it gets sent.
3117			// However, not all RTMP_PT_NOTIFY packets (e.g., onTextData
3118			// and onCuePoint).
3119			uint8_t commandbuffer[64];
3120		✗	int stringlen = 0;
3121			GetByteContext gbc;
3122
3123		✗	bytestream2_init(&gbc, rt->flv_data, rt->flv_size);
3124		✗	if (!ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer),
3125			&stringlen)) {
3126		✗	if (!strcmp(commandbuffer, "onMetaData") ||
3127		✗	!strcmp(commandbuffer, "|RtmpSampleAccess")) {
3128			uint8_t *ptr;
3129		✗	if ((ret = av_reallocp(&rt->out_pkt.data, rt->out_pkt.size + 16)) < 0) {
3130		✗	rt->flv_size = rt->flv_off = rt->flv_header_bytes = 0;
3131		✗	return ret;
3132			}
3133		✗	memmove(rt->out_pkt.data + 16, rt->out_pkt.data, rt->out_pkt.size);
3134		✗	rt->out_pkt.size += 16;
3135		✗	ptr = rt->out_pkt.data;
3136		✗	ff_amf_write_string(&ptr, "@setDataFrame");
3137			}
3138			}
3139			}
3140
3141		✗	if ((ret = rtmp_send_packet(rt, &rt->out_pkt, 0)) < 0)
3142		✗	return ret;
3143		✗	rt->flv_size = 0;
3144		✗	rt->flv_off = 0;
3145		✗	rt->flv_header_bytes = 0;
3146		✗	rt->flv_nb_packets++;
3147			}
3148		✗	} while (buf_temp - buf < size);
3149
3150		✗	if (rt->flv_nb_packets < rt->flush_interval)
3151		✗	return size;
3152		✗	rt->flv_nb_packets = 0;
3153
3154			/* set stream into nonblocking mode */
3155		✗	rt->stream->flags |= AVIO_FLAG_NONBLOCK;
3156
3157			/* try to read one byte from the stream */
3158		✗	ret = ffurl_read(rt->stream, &c, 1);
3159
3160			/* switch the stream back into blocking mode */
3161		✗	rt->stream->flags &= ~AVIO_FLAG_NONBLOCK;
3162
3163		✗	if (ret == AVERROR(EAGAIN)) {
3164			/* no incoming data to handle */
3165		✗	return size;
3166		✗	} else if (ret < 0) {
3167		✗	return ret;
3168		✗	} else if (ret == 1) {
3169		✗	RTMPPacket rpkt = { 0 };
3170
3171		✗	if ((ret = ff_rtmp_packet_read_internal(rt->stream, &rpkt,
3172			rt->in_chunk_size,
3173			&rt->prev_pkt[0],
3174			&rt->nb_prev_pkt[0], c)) <= 0)
3175		✗	return ret;
3176
3177		✗	if ((ret = rtmp_parse_result(s, rt, &rpkt)) < 0)
3178		✗	return ret;
3179
3180		✗	ff_rtmp_packet_destroy(&rpkt);
3181			}
3182
3183		✗	return size;
3184			}
3185
3186			#define OFFSET(x) offsetof(RTMPContext, x)
3187			#define DEC AV_OPT_FLAG_DECODING_PARAM
3188			#define ENC AV_OPT_FLAG_ENCODING_PARAM
3189
3190			static const AVOption rtmp_options[] = {
3191			{"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3192			{"rtmp_buffer", "Set buffer time in milliseconds. The default is 3000.", OFFSET(client_buffer_time), AV_OPT_TYPE_INT, {.i64 = 3000}, 0, INT_MAX, DEC|ENC},
3193			{"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3194			{"rtmp_flashver", "Version of the Flash plugin used to run the SWF player.", OFFSET(flashver), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3195			{"rtmp_flush_interval", "Number of packets flushed in the same request (RTMPT only).", OFFSET(flush_interval), AV_OPT_TYPE_INT, {.i64 = 10}, 0, INT_MAX, ENC},
3196			{"rtmp_enhanced_codecs", "Specify the codec(s) to use in an enhanced rtmp live stream", OFFSET(enhanced_codecs), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, ENC},
3197			{"rtmp_live", "Specify that the media is a live stream.", OFFSET(live), AV_OPT_TYPE_INT, {.i64 = -2}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_live"},
3198			{"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, .unit = "rtmp_live"},
3199			{"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, .unit = "rtmp_live"},
3200			{"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, .unit = "rtmp_live"},
3201			{"rtmp_pageurl", "URL of the web page in which the media was embedded. By default no value will be sent.", OFFSET(pageurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
3202			{"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3203			{"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
3204			{"rtmp_swfhash", "SHA256 hash of the decompressed SWF file (32 bytes).", OFFSET(swfhash), AV_OPT_TYPE_BINARY, .flags = DEC},
3205			{"rtmp_swfsize", "Size of the decompressed SWF file, required for SWFVerification.", OFFSET(swfsize), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC},
3206			{"rtmp_swfurl", "URL of the SWF player. By default no value will be sent", OFFSET(swfurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3207			{"rtmp_swfverify", "URL to player swf file, compute hash/size automatically.", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC},
3208			{"rtmp_tcurl", "URL of the target stream. Defaults to proto://host[:port]/app.", OFFSET(tcurl), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC},
3209			{"rtmp_listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_listen" },
3210			{"listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_listen" },
3211			{"tcp_nodelay", "Use TCP_NODELAY to disable Nagle's algorithm", OFFSET(tcp_nodelay), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC|ENC},
3212			{"timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies -rtmp_listen 1", OFFSET(listen_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC, .unit = "rtmp_listen" },
3213			{ NULL },
3214			};
3215
3216			#define RTMP_PROTOCOL_0(flavor)
3217			#define RTMP_PROTOCOL_1(flavor) \
3218			static const AVClass flavor##_class = { \
3219			.class_name = #flavor, \
3220			.item_name = av_default_item_name, \
3221			.option = rtmp_options, \
3222			.version = LIBAVUTIL_VERSION_INT, \
3223			}; \
3224			\
3225			const URLProtocol ff_##flavor##_protocol = { \
3226			.name = #flavor, \
3227			.url_open2 = rtmp_open, \
3228			.url_read = rtmp_read, \
3229			.url_read_seek = rtmp_seek, \
3230			.url_read_pause = rtmp_pause, \
3231			.url_write = rtmp_write, \
3232			.url_close = rtmp_close, \
3233			.priv_data_size = sizeof(RTMPContext), \
3234			.flags = URL_PROTOCOL_FLAG_NETWORK, \
3235			.priv_data_class= &flavor##_class, \
3236			};
3237			#define RTMP_PROTOCOL_2(flavor, enabled) \
3238			RTMP_PROTOCOL_ ## enabled(flavor)
3239			#define RTMP_PROTOCOL_3(flavor, config) \
3240			RTMP_PROTOCOL_2(flavor, config)
3241			#define RTMP_PROTOCOL(flavor, uppercase) \
3242			RTMP_PROTOCOL_3(flavor, CONFIG_ ## uppercase ## _PROTOCOL)
3243
3244			RTMP_PROTOCOL(rtmp, RTMP)
3245			RTMP_PROTOCOL(rtmpe, RTMPE)
3246			RTMP_PROTOCOL(rtmps, RTMPS)
3247			RTMP_PROTOCOL(rtmpt, RTMPT)
3248			RTMP_PROTOCOL(rtmpte, RTMPTE)
3249			RTMP_PROTOCOL(rtmpts, RTMPTS)
3250