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2ba45a60 DM |
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 "libavcodec/bytestream.h" | |
28 | #include "libavutil/avstring.h" | |
29 | #include "libavutil/base64.h" | |
30 | #include "libavutil/intfloat.h" | |
31 | #include "libavutil/lfg.h" | |
32 | #include "libavutil/md5.h" | |
33 | #include "libavutil/opt.h" | |
34 | #include "libavutil/random_seed.h" | |
35 | #include "libavutil/sha.h" | |
36 | #include "avformat.h" | |
37 | #include "internal.h" | |
38 | ||
39 | #include "network.h" | |
40 | ||
41 | #include "flv.h" | |
42 | #include "rtmp.h" | |
43 | #include "rtmpcrypt.h" | |
44 | #include "rtmppkt.h" | |
45 | #include "url.h" | |
46 | ||
47 | #if CONFIG_ZLIB | |
48 | #include <zlib.h> | |
49 | #endif | |
50 | ||
51 | #define APP_MAX_LENGTH 1024 | |
52 | #define PLAYPATH_MAX_LENGTH 256 | |
53 | #define TCURL_MAX_LENGTH 512 | |
54 | #define FLASHVER_MAX_LENGTH 64 | |
55 | #define RTMP_PKTDATA_DEFAULT_SIZE 4096 | |
56 | #define RTMP_HEADER 11 | |
57 | ||
58 | /** RTMP protocol handler state */ | |
59 | typedef enum { | |
60 | STATE_START, ///< client has not done anything yet | |
61 | STATE_HANDSHAKED, ///< client has performed handshake | |
62 | STATE_FCPUBLISH, ///< client FCPublishing stream (for output) | |
63 | STATE_PLAYING, ///< client has started receiving multimedia data from server | |
64 | STATE_SEEKING, ///< client has started the seek operation. Back on STATE_PLAYING when the time comes | |
65 | STATE_PUBLISHING, ///< client has started sending multimedia data to server (for output) | |
66 | STATE_RECEIVING, ///< received a publish command (for input) | |
67 | STATE_SENDING, ///< received a play command (for output) | |
68 | STATE_STOPPED, ///< the broadcast has been stopped | |
69 | } ClientState; | |
70 | ||
71 | typedef struct TrackedMethod { | |
72 | char *name; | |
73 | int id; | |
74 | } TrackedMethod; | |
75 | ||
76 | /** protocol handler context */ | |
77 | typedef struct RTMPContext { | |
78 | const AVClass *class; | |
79 | URLContext* stream; ///< TCP stream used in interactions with RTMP server | |
80 | RTMPPacket *prev_pkt[2]; ///< packet history used when reading and sending packets ([0] for reading, [1] for writing) | |
81 | int nb_prev_pkt[2]; ///< number of elements in prev_pkt | |
82 | int in_chunk_size; ///< size of the chunks incoming RTMP packets are divided into | |
83 | int out_chunk_size; ///< size of the chunks outgoing RTMP packets are divided into | |
84 | int is_input; ///< input/output flag | |
85 | char *playpath; ///< stream identifier to play (with possible "mp4:" prefix) | |
86 | int live; ///< 0: recorded, -1: live, -2: both | |
87 | char *app; ///< name of application | |
88 | char *conn; ///< append arbitrary AMF data to the Connect message | |
89 | ClientState state; ///< current state | |
90 | int stream_id; ///< ID assigned by the server for the stream | |
91 | uint8_t* flv_data; ///< buffer with data for demuxer | |
92 | int flv_size; ///< current buffer size | |
93 | int flv_off; ///< number of bytes read from current buffer | |
94 | int flv_nb_packets; ///< number of flv packets published | |
95 | RTMPPacket out_pkt; ///< rtmp packet, created from flv a/v or metadata (for output) | |
96 | uint32_t client_report_size; ///< number of bytes after which client should report to server | |
97 | uint32_t bytes_read; ///< number of bytes read from server | |
98 | uint32_t last_bytes_read; ///< number of bytes read last reported to server | |
f6fa7814 | 99 | uint32_t last_timestamp; ///< last timestamp received in a packet |
2ba45a60 DM |
100 | int skip_bytes; ///< number of bytes to skip from the input FLV stream in the next write call |
101 | int has_audio; ///< presence of audio data | |
102 | int has_video; ///< presence of video data | |
103 | int received_metadata; ///< Indicates if we have received metadata about the streams | |
104 | uint8_t flv_header[RTMP_HEADER]; ///< partial incoming flv packet header | |
105 | int flv_header_bytes; ///< number of initialized bytes in flv_header | |
106 | int nb_invokes; ///< keeps track of invoke messages | |
107 | char* tcurl; ///< url of the target stream | |
108 | char* flashver; ///< version of the flash plugin | |
109 | char* swfhash; ///< SHA256 hash of the decompressed SWF file (32 bytes) | |
110 | int swfhash_len; ///< length of the SHA256 hash | |
111 | int swfsize; ///< size of the decompressed SWF file | |
112 | char* swfurl; ///< url of the swf player | |
113 | char* swfverify; ///< URL to player swf file, compute hash/size automatically | |
114 | char swfverification[42]; ///< hash of the SWF verification | |
115 | char* pageurl; ///< url of the web page | |
116 | char* subscribe; ///< name of live stream to subscribe | |
117 | int server_bw; ///< server bandwidth | |
118 | int client_buffer_time; ///< client buffer time in ms | |
119 | int flush_interval; ///< number of packets flushed in the same request (RTMPT only) | |
120 | int encrypted; ///< use an encrypted connection (RTMPE only) | |
121 | TrackedMethod*tracked_methods; ///< tracked methods buffer | |
122 | int nb_tracked_methods; ///< number of tracked methods | |
123 | int tracked_methods_size; ///< size of the tracked methods buffer | |
124 | int listen; ///< listen mode flag | |
125 | int listen_timeout; ///< listen timeout to wait for new connections | |
126 | int nb_streamid; ///< The next stream id to return on createStream calls | |
f6fa7814 | 127 | double duration; ///< Duration of the stream in seconds as returned by the server (only valid if non-zero) |
2ba45a60 DM |
128 | char username[50]; |
129 | char password[50]; | |
130 | char auth_params[500]; | |
131 | int do_reconnect; | |
132 | int auth_tried; | |
133 | } RTMPContext; | |
134 | ||
135 | #define PLAYER_KEY_OPEN_PART_LEN 30 ///< length of partial key used for first client digest signing | |
136 | /** Client key used for digest signing */ | |
137 | static const uint8_t rtmp_player_key[] = { | |
138 | 'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ', | |
139 | 'F', 'l', 'a', 's', 'h', ' ', 'P', 'l', 'a', 'y', 'e', 'r', ' ', '0', '0', '1', | |
140 | ||
141 | 0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02, | |
142 | 0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8, | |
143 | 0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE | |
144 | }; | |
145 | ||
146 | #define SERVER_KEY_OPEN_PART_LEN 36 ///< length of partial key used for first server digest signing | |
147 | /** Key used for RTMP server digest signing */ | |
148 | static const uint8_t rtmp_server_key[] = { | |
149 | 'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ', | |
150 | 'F', 'l', 'a', 's', 'h', ' ', 'M', 'e', 'd', 'i', 'a', ' ', | |
151 | 'S', 'e', 'r', 'v', 'e', 'r', ' ', '0', '0', '1', | |
152 | ||
153 | 0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02, | |
154 | 0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8, | |
155 | 0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE | |
156 | }; | |
157 | ||
158 | static int handle_chunk_size(URLContext *s, RTMPPacket *pkt); | |
159 | ||
160 | static int add_tracked_method(RTMPContext *rt, const char *name, int id) | |
161 | { | |
162 | int err; | |
163 | ||
164 | if (rt->nb_tracked_methods + 1 > rt->tracked_methods_size) { | |
165 | rt->tracked_methods_size = (rt->nb_tracked_methods + 1) * 2; | |
166 | if ((err = av_reallocp(&rt->tracked_methods, rt->tracked_methods_size * | |
167 | sizeof(*rt->tracked_methods))) < 0) { | |
168 | rt->nb_tracked_methods = 0; | |
169 | rt->tracked_methods_size = 0; | |
170 | return err; | |
171 | } | |
172 | } | |
173 | ||
174 | rt->tracked_methods[rt->nb_tracked_methods].name = av_strdup(name); | |
175 | if (!rt->tracked_methods[rt->nb_tracked_methods].name) | |
176 | return AVERROR(ENOMEM); | |
177 | rt->tracked_methods[rt->nb_tracked_methods].id = id; | |
178 | rt->nb_tracked_methods++; | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | static void del_tracked_method(RTMPContext *rt, int index) | |
184 | { | |
185 | memmove(&rt->tracked_methods[index], &rt->tracked_methods[index + 1], | |
186 | sizeof(*rt->tracked_methods) * (rt->nb_tracked_methods - index - 1)); | |
187 | rt->nb_tracked_methods--; | |
188 | } | |
189 | ||
190 | static int find_tracked_method(URLContext *s, RTMPPacket *pkt, int offset, | |
191 | char **tracked_method) | |
192 | { | |
193 | RTMPContext *rt = s->priv_data; | |
194 | GetByteContext gbc; | |
195 | double pkt_id; | |
196 | int ret; | |
197 | int i; | |
198 | ||
199 | bytestream2_init(&gbc, pkt->data + offset, pkt->size - offset); | |
200 | if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0) | |
201 | return ret; | |
202 | ||
203 | for (i = 0; i < rt->nb_tracked_methods; i++) { | |
204 | if (rt->tracked_methods[i].id != pkt_id) | |
205 | continue; | |
206 | ||
207 | *tracked_method = rt->tracked_methods[i].name; | |
208 | del_tracked_method(rt, i); | |
209 | break; | |
210 | } | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | static void free_tracked_methods(RTMPContext *rt) | |
216 | { | |
217 | int i; | |
218 | ||
219 | for (i = 0; i < rt->nb_tracked_methods; i ++) | |
220 | av_free(rt->tracked_methods[i].name); | |
221 | av_free(rt->tracked_methods); | |
222 | rt->tracked_methods = NULL; | |
223 | rt->tracked_methods_size = 0; | |
224 | rt->nb_tracked_methods = 0; | |
225 | } | |
226 | ||
227 | static int rtmp_send_packet(RTMPContext *rt, RTMPPacket *pkt, int track) | |
228 | { | |
229 | int ret; | |
230 | ||
231 | if (pkt->type == RTMP_PT_INVOKE && track) { | |
232 | GetByteContext gbc; | |
233 | char name[128]; | |
234 | double pkt_id; | |
235 | int len; | |
236 | ||
237 | bytestream2_init(&gbc, pkt->data, pkt->size); | |
238 | if ((ret = ff_amf_read_string(&gbc, name, sizeof(name), &len)) < 0) | |
239 | goto fail; | |
240 | ||
241 | if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0) | |
242 | goto fail; | |
243 | ||
244 | if ((ret = add_tracked_method(rt, name, pkt_id)) < 0) | |
245 | goto fail; | |
246 | } | |
247 | ||
248 | ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size, | |
249 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
250 | fail: | |
251 | ff_rtmp_packet_destroy(pkt); | |
252 | return ret; | |
253 | } | |
254 | ||
255 | static int rtmp_write_amf_data(URLContext *s, char *param, uint8_t **p) | |
256 | { | |
257 | char *field, *value; | |
258 | char type; | |
259 | ||
260 | /* The type must be B for Boolean, N for number, S for string, O for | |
261 | * object, or Z for null. For Booleans the data must be either 0 or 1 for | |
262 | * FALSE or TRUE, respectively. Likewise for Objects the data must be | |
263 | * 0 or 1 to end or begin an object, respectively. Data items in subobjects | |
264 | * may be named, by prefixing the type with 'N' and specifying the name | |
265 | * before the value (ie. NB:myFlag:1). This option may be used multiple times | |
266 | * to construct arbitrary AMF sequences. */ | |
267 | if (param[0] && param[1] == ':') { | |
268 | type = param[0]; | |
269 | value = param + 2; | |
270 | } else if (param[0] == 'N' && param[1] && param[2] == ':') { | |
271 | type = param[1]; | |
272 | field = param + 3; | |
273 | value = strchr(field, ':'); | |
274 | if (!value) | |
275 | goto fail; | |
276 | *value = '\0'; | |
277 | value++; | |
278 | ||
279 | ff_amf_write_field_name(p, field); | |
280 | } else { | |
281 | goto fail; | |
282 | } | |
283 | ||
284 | switch (type) { | |
285 | case 'B': | |
286 | ff_amf_write_bool(p, value[0] != '0'); | |
287 | break; | |
288 | case 'S': | |
289 | ff_amf_write_string(p, value); | |
290 | break; | |
291 | case 'N': | |
292 | ff_amf_write_number(p, strtod(value, NULL)); | |
293 | break; | |
294 | case 'Z': | |
295 | ff_amf_write_null(p); | |
296 | break; | |
297 | case 'O': | |
298 | if (value[0] != '0') | |
299 | ff_amf_write_object_start(p); | |
300 | else | |
301 | ff_amf_write_object_end(p); | |
302 | break; | |
303 | default: | |
304 | goto fail; | |
305 | break; | |
306 | } | |
307 | ||
308 | return 0; | |
309 | ||
310 | fail: | |
311 | av_log(s, AV_LOG_ERROR, "Invalid AMF parameter: %s\n", param); | |
312 | return AVERROR(EINVAL); | |
313 | } | |
314 | ||
315 | /** | |
316 | * Generate 'connect' call and send it to the server. | |
317 | */ | |
318 | static int gen_connect(URLContext *s, RTMPContext *rt) | |
319 | { | |
320 | RTMPPacket pkt; | |
321 | uint8_t *p; | |
322 | int ret; | |
323 | ||
324 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
325 | 0, 4096 + APP_MAX_LENGTH)) < 0) | |
326 | return ret; | |
327 | ||
328 | p = pkt.data; | |
329 | ||
330 | ff_amf_write_string(&p, "connect"); | |
331 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
332 | ff_amf_write_object_start(&p); | |
333 | ff_amf_write_field_name(&p, "app"); | |
334 | ff_amf_write_string2(&p, rt->app, rt->auth_params); | |
335 | ||
336 | if (!rt->is_input) { | |
337 | ff_amf_write_field_name(&p, "type"); | |
338 | ff_amf_write_string(&p, "nonprivate"); | |
339 | } | |
340 | ff_amf_write_field_name(&p, "flashVer"); | |
341 | ff_amf_write_string(&p, rt->flashver); | |
342 | ||
343 | if (rt->swfurl) { | |
344 | ff_amf_write_field_name(&p, "swfUrl"); | |
345 | ff_amf_write_string(&p, rt->swfurl); | |
346 | } | |
347 | ||
348 | ff_amf_write_field_name(&p, "tcUrl"); | |
349 | ff_amf_write_string2(&p, rt->tcurl, rt->auth_params); | |
350 | if (rt->is_input) { | |
351 | ff_amf_write_field_name(&p, "fpad"); | |
352 | ff_amf_write_bool(&p, 0); | |
353 | ff_amf_write_field_name(&p, "capabilities"); | |
354 | ff_amf_write_number(&p, 15.0); | |
355 | ||
356 | /* Tell the server we support all the audio codecs except | |
357 | * SUPPORT_SND_INTEL (0x0008) and SUPPORT_SND_UNUSED (0x0010) | |
358 | * which are unused in the RTMP protocol implementation. */ | |
359 | ff_amf_write_field_name(&p, "audioCodecs"); | |
360 | ff_amf_write_number(&p, 4071.0); | |
361 | ff_amf_write_field_name(&p, "videoCodecs"); | |
362 | ff_amf_write_number(&p, 252.0); | |
363 | ff_amf_write_field_name(&p, "videoFunction"); | |
364 | ff_amf_write_number(&p, 1.0); | |
365 | ||
366 | if (rt->pageurl) { | |
367 | ff_amf_write_field_name(&p, "pageUrl"); | |
368 | ff_amf_write_string(&p, rt->pageurl); | |
369 | } | |
370 | } | |
371 | ff_amf_write_object_end(&p); | |
372 | ||
373 | if (rt->conn) { | |
374 | char *param = rt->conn; | |
375 | ||
376 | // Write arbitrary AMF data to the Connect message. | |
377 | while (param) { | |
378 | char *sep; | |
379 | param += strspn(param, " "); | |
380 | if (!*param) | |
381 | break; | |
382 | sep = strchr(param, ' '); | |
383 | if (sep) | |
384 | *sep = '\0'; | |
385 | if ((ret = rtmp_write_amf_data(s, param, &p)) < 0) { | |
386 | // Invalid AMF parameter. | |
387 | ff_rtmp_packet_destroy(&pkt); | |
388 | return ret; | |
389 | } | |
390 | ||
391 | if (sep) | |
392 | param = sep + 1; | |
393 | else | |
394 | break; | |
395 | } | |
396 | } | |
397 | ||
398 | pkt.size = p - pkt.data; | |
399 | ||
400 | return rtmp_send_packet(rt, &pkt, 1); | |
401 | } | |
402 | ||
403 | static int read_connect(URLContext *s, RTMPContext *rt) | |
404 | { | |
405 | RTMPPacket pkt = { 0 }; | |
406 | uint8_t *p; | |
407 | const uint8_t *cp; | |
408 | int ret; | |
409 | char command[64]; | |
410 | int stringlen; | |
411 | double seqnum; | |
412 | uint8_t tmpstr[256]; | |
413 | GetByteContext gbc; | |
414 | ||
415 | if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size, | |
416 | &rt->prev_pkt[0], &rt->nb_prev_pkt[0])) < 0) | |
417 | return ret; | |
418 | ||
419 | if (pkt.type == RTMP_PT_CHUNK_SIZE) { | |
420 | if ((ret = handle_chunk_size(s, &pkt)) < 0) | |
421 | return ret; | |
422 | ||
423 | ff_rtmp_packet_destroy(&pkt); | |
424 | if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size, | |
425 | &rt->prev_pkt[0], &rt->nb_prev_pkt[0])) < 0) | |
426 | return ret; | |
427 | } | |
428 | ||
429 | cp = pkt.data; | |
430 | bytestream2_init(&gbc, cp, pkt.size); | |
431 | if (ff_amf_read_string(&gbc, command, sizeof(command), &stringlen)) { | |
432 | av_log(s, AV_LOG_ERROR, "Unable to read command string\n"); | |
433 | ff_rtmp_packet_destroy(&pkt); | |
434 | return AVERROR_INVALIDDATA; | |
435 | } | |
436 | if (strcmp(command, "connect")) { | |
437 | av_log(s, AV_LOG_ERROR, "Expecting connect, got %s\n", command); | |
438 | ff_rtmp_packet_destroy(&pkt); | |
439 | return AVERROR_INVALIDDATA; | |
440 | } | |
441 | ret = ff_amf_read_number(&gbc, &seqnum); | |
442 | if (ret) | |
443 | av_log(s, AV_LOG_WARNING, "SeqNum not found\n"); | |
444 | /* Here one could parse an AMF Object with data as flashVers and others. */ | |
445 | ret = ff_amf_get_field_value(gbc.buffer, | |
446 | gbc.buffer + bytestream2_get_bytes_left(&gbc), | |
447 | "app", tmpstr, sizeof(tmpstr)); | |
448 | if (ret) | |
449 | av_log(s, AV_LOG_WARNING, "App field not found in connect\n"); | |
450 | if (!ret && strcmp(tmpstr, rt->app)) | |
451 | av_log(s, AV_LOG_WARNING, "App field don't match up: %s <-> %s\n", | |
452 | tmpstr, rt->app); | |
453 | ff_rtmp_packet_destroy(&pkt); | |
454 | ||
455 | // Send Window Acknowledgement Size (as defined in speficication) | |
456 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, | |
457 | RTMP_PT_SERVER_BW, 0, 4)) < 0) | |
458 | return ret; | |
459 | p = pkt.data; | |
460 | bytestream_put_be32(&p, rt->server_bw); | |
461 | pkt.size = p - pkt.data; | |
462 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
463 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
464 | ff_rtmp_packet_destroy(&pkt); | |
465 | if (ret < 0) | |
466 | return ret; | |
467 | // Send Peer Bandwidth | |
468 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, | |
469 | RTMP_PT_CLIENT_BW, 0, 5)) < 0) | |
470 | return ret; | |
471 | p = pkt.data; | |
472 | bytestream_put_be32(&p, rt->server_bw); | |
473 | bytestream_put_byte(&p, 2); // dynamic | |
474 | pkt.size = p - pkt.data; | |
475 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
476 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
477 | ff_rtmp_packet_destroy(&pkt); | |
478 | if (ret < 0) | |
479 | return ret; | |
480 | ||
481 | // Ping request | |
482 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, | |
483 | RTMP_PT_PING, 0, 6)) < 0) | |
484 | return ret; | |
485 | ||
486 | p = pkt.data; | |
487 | bytestream_put_be16(&p, 0); // 0 -> Stream Begin | |
488 | bytestream_put_be32(&p, 0); | |
489 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
490 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
491 | ff_rtmp_packet_destroy(&pkt); | |
492 | if (ret < 0) | |
493 | return ret; | |
494 | ||
495 | // Chunk size | |
496 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, | |
497 | RTMP_PT_CHUNK_SIZE, 0, 4)) < 0) | |
498 | return ret; | |
499 | ||
500 | p = pkt.data; | |
501 | bytestream_put_be32(&p, rt->out_chunk_size); | |
502 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
503 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
504 | ff_rtmp_packet_destroy(&pkt); | |
505 | if (ret < 0) | |
506 | return ret; | |
507 | ||
f6fa7814 | 508 | // Send _result NetConnection.Connect.Success to connect |
2ba45a60 DM |
509 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, |
510 | RTMP_PT_INVOKE, 0, | |
511 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) | |
512 | return ret; | |
513 | ||
514 | p = pkt.data; | |
515 | ff_amf_write_string(&p, "_result"); | |
516 | ff_amf_write_number(&p, seqnum); | |
517 | ||
518 | ff_amf_write_object_start(&p); | |
519 | ff_amf_write_field_name(&p, "fmsVer"); | |
520 | ff_amf_write_string(&p, "FMS/3,0,1,123"); | |
521 | ff_amf_write_field_name(&p, "capabilities"); | |
522 | ff_amf_write_number(&p, 31); | |
523 | ff_amf_write_object_end(&p); | |
524 | ||
525 | ff_amf_write_object_start(&p); | |
526 | ff_amf_write_field_name(&p, "level"); | |
527 | ff_amf_write_string(&p, "status"); | |
528 | ff_amf_write_field_name(&p, "code"); | |
529 | ff_amf_write_string(&p, "NetConnection.Connect.Success"); | |
530 | ff_amf_write_field_name(&p, "description"); | |
531 | ff_amf_write_string(&p, "Connection succeeded."); | |
532 | ff_amf_write_field_name(&p, "objectEncoding"); | |
533 | ff_amf_write_number(&p, 0); | |
534 | ff_amf_write_object_end(&p); | |
535 | ||
536 | pkt.size = p - pkt.data; | |
537 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
538 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
539 | ff_rtmp_packet_destroy(&pkt); | |
540 | if (ret < 0) | |
541 | return ret; | |
542 | ||
543 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, | |
544 | RTMP_PT_INVOKE, 0, 30)) < 0) | |
545 | return ret; | |
546 | p = pkt.data; | |
547 | ff_amf_write_string(&p, "onBWDone"); | |
548 | ff_amf_write_number(&p, 0); | |
549 | ff_amf_write_null(&p); | |
550 | ff_amf_write_number(&p, 8192); | |
551 | pkt.size = p - pkt.data; | |
552 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
553 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
554 | ff_rtmp_packet_destroy(&pkt); | |
555 | ||
556 | return ret; | |
557 | } | |
558 | ||
559 | /** | |
560 | * Generate 'releaseStream' call and send it to the server. It should make | |
561 | * the server release some channel for media streams. | |
562 | */ | |
563 | static int gen_release_stream(URLContext *s, RTMPContext *rt) | |
564 | { | |
565 | RTMPPacket pkt; | |
566 | uint8_t *p; | |
567 | int ret; | |
568 | ||
569 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
570 | 0, 29 + strlen(rt->playpath))) < 0) | |
571 | return ret; | |
572 | ||
573 | av_log(s, AV_LOG_DEBUG, "Releasing stream...\n"); | |
574 | p = pkt.data; | |
575 | ff_amf_write_string(&p, "releaseStream"); | |
576 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
577 | ff_amf_write_null(&p); | |
578 | ff_amf_write_string(&p, rt->playpath); | |
579 | ||
580 | return rtmp_send_packet(rt, &pkt, 1); | |
581 | } | |
582 | ||
583 | /** | |
584 | * Generate 'FCPublish' call and send it to the server. It should make | |
585 | * the server preapare for receiving media streams. | |
586 | */ | |
587 | static int gen_fcpublish_stream(URLContext *s, RTMPContext *rt) | |
588 | { | |
589 | RTMPPacket pkt; | |
590 | uint8_t *p; | |
591 | int ret; | |
592 | ||
593 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
594 | 0, 25 + strlen(rt->playpath))) < 0) | |
595 | return ret; | |
596 | ||
597 | av_log(s, AV_LOG_DEBUG, "FCPublish stream...\n"); | |
598 | p = pkt.data; | |
599 | ff_amf_write_string(&p, "FCPublish"); | |
600 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
601 | ff_amf_write_null(&p); | |
602 | ff_amf_write_string(&p, rt->playpath); | |
603 | ||
604 | return rtmp_send_packet(rt, &pkt, 1); | |
605 | } | |
606 | ||
607 | /** | |
608 | * Generate 'FCUnpublish' call and send it to the server. It should make | |
609 | * the server destroy stream. | |
610 | */ | |
611 | static int gen_fcunpublish_stream(URLContext *s, RTMPContext *rt) | |
612 | { | |
613 | RTMPPacket pkt; | |
614 | uint8_t *p; | |
615 | int ret; | |
616 | ||
617 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
618 | 0, 27 + strlen(rt->playpath))) < 0) | |
619 | return ret; | |
620 | ||
621 | av_log(s, AV_LOG_DEBUG, "UnPublishing stream...\n"); | |
622 | p = pkt.data; | |
623 | ff_amf_write_string(&p, "FCUnpublish"); | |
624 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
625 | ff_amf_write_null(&p); | |
626 | ff_amf_write_string(&p, rt->playpath); | |
627 | ||
628 | return rtmp_send_packet(rt, &pkt, 0); | |
629 | } | |
630 | ||
631 | /** | |
632 | * Generate 'createStream' call and send it to the server. It should make | |
633 | * the server allocate some channel for media streams. | |
634 | */ | |
635 | static int gen_create_stream(URLContext *s, RTMPContext *rt) | |
636 | { | |
637 | RTMPPacket pkt; | |
638 | uint8_t *p; | |
639 | int ret; | |
640 | ||
641 | av_log(s, AV_LOG_DEBUG, "Creating stream...\n"); | |
642 | ||
643 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
644 | 0, 25)) < 0) | |
645 | return ret; | |
646 | ||
647 | p = pkt.data; | |
648 | ff_amf_write_string(&p, "createStream"); | |
649 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
650 | ff_amf_write_null(&p); | |
651 | ||
652 | return rtmp_send_packet(rt, &pkt, 1); | |
653 | } | |
654 | ||
655 | ||
656 | /** | |
657 | * Generate 'deleteStream' call and send it to the server. It should make | |
658 | * the server remove some channel for media streams. | |
659 | */ | |
660 | static int gen_delete_stream(URLContext *s, RTMPContext *rt) | |
661 | { | |
662 | RTMPPacket pkt; | |
663 | uint8_t *p; | |
664 | int ret; | |
665 | ||
666 | av_log(s, AV_LOG_DEBUG, "Deleting stream...\n"); | |
667 | ||
668 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
669 | 0, 34)) < 0) | |
670 | return ret; | |
671 | ||
672 | p = pkt.data; | |
673 | ff_amf_write_string(&p, "deleteStream"); | |
674 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
675 | ff_amf_write_null(&p); | |
676 | ff_amf_write_number(&p, rt->stream_id); | |
677 | ||
678 | return rtmp_send_packet(rt, &pkt, 0); | |
679 | } | |
680 | ||
f6fa7814 DM |
681 | /** |
682 | * Generate 'getStreamLength' call and send it to the server. If the server | |
683 | * knows the duration of the selected stream, it will reply with the duration | |
684 | * in seconds. | |
685 | */ | |
686 | static int gen_get_stream_length(URLContext *s, RTMPContext *rt) | |
687 | { | |
688 | RTMPPacket pkt; | |
689 | uint8_t *p; | |
690 | int ret; | |
691 | ||
692 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE, | |
693 | 0, 31 + strlen(rt->playpath))) < 0) | |
694 | return ret; | |
695 | ||
696 | p = pkt.data; | |
697 | ff_amf_write_string(&p, "getStreamLength"); | |
698 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
699 | ff_amf_write_null(&p); | |
700 | ff_amf_write_string(&p, rt->playpath); | |
701 | ||
702 | return rtmp_send_packet(rt, &pkt, 1); | |
703 | } | |
704 | ||
2ba45a60 DM |
705 | /** |
706 | * Generate client buffer time and send it to the server. | |
707 | */ | |
708 | static int gen_buffer_time(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_NETWORK_CHANNEL, RTMP_PT_PING, | |
715 | 1, 10)) < 0) | |
716 | return ret; | |
717 | ||
718 | p = pkt.data; | |
719 | bytestream_put_be16(&p, 3); | |
720 | bytestream_put_be32(&p, rt->stream_id); | |
721 | bytestream_put_be32(&p, rt->client_buffer_time); | |
722 | ||
723 | return rtmp_send_packet(rt, &pkt, 0); | |
724 | } | |
725 | ||
726 | /** | |
727 | * Generate 'play' call and send it to the server, then ping the server | |
728 | * to start actual playing. | |
729 | */ | |
730 | static int gen_play(URLContext *s, RTMPContext *rt) | |
731 | { | |
732 | RTMPPacket pkt; | |
733 | uint8_t *p; | |
734 | int ret; | |
735 | ||
736 | av_log(s, AV_LOG_DEBUG, "Sending play command for '%s'\n", rt->playpath); | |
737 | ||
738 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE, | |
739 | 0, 29 + strlen(rt->playpath))) < 0) | |
740 | return ret; | |
741 | ||
742 | pkt.extra = rt->stream_id; | |
743 | ||
744 | p = pkt.data; | |
745 | ff_amf_write_string(&p, "play"); | |
746 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
747 | ff_amf_write_null(&p); | |
748 | ff_amf_write_string(&p, rt->playpath); | |
749 | ff_amf_write_number(&p, rt->live * 1000); | |
750 | ||
751 | return rtmp_send_packet(rt, &pkt, 1); | |
752 | } | |
753 | ||
754 | static int gen_seek(URLContext *s, RTMPContext *rt, int64_t timestamp) | |
755 | { | |
756 | RTMPPacket pkt; | |
757 | uint8_t *p; | |
758 | int ret; | |
759 | ||
760 | av_log(s, AV_LOG_DEBUG, "Sending seek command for timestamp %"PRId64"\n", | |
761 | timestamp); | |
762 | ||
763 | if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 26)) < 0) | |
764 | return ret; | |
765 | ||
766 | pkt.extra = rt->stream_id; | |
767 | ||
768 | p = pkt.data; | |
769 | ff_amf_write_string(&p, "seek"); | |
770 | ff_amf_write_number(&p, 0); //no tracking back responses | |
771 | ff_amf_write_null(&p); //as usual, the first null param | |
772 | ff_amf_write_number(&p, timestamp); //where we want to jump | |
773 | ||
774 | return rtmp_send_packet(rt, &pkt, 1); | |
775 | } | |
776 | ||
f6fa7814 DM |
777 | /** |
778 | * Generate a pause packet that either pauses or unpauses the current stream. | |
779 | */ | |
780 | static int gen_pause(URLContext *s, RTMPContext *rt, int pause, uint32_t timestamp) | |
781 | { | |
782 | RTMPPacket pkt; | |
783 | uint8_t *p; | |
784 | int ret; | |
785 | ||
786 | av_log(s, AV_LOG_DEBUG, "Sending pause command for timestamp %d\n", | |
787 | timestamp); | |
788 | ||
789 | if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 29)) < 0) | |
790 | return ret; | |
791 | ||
792 | pkt.extra = rt->stream_id; | |
793 | ||
794 | p = pkt.data; | |
795 | ff_amf_write_string(&p, "pause"); | |
796 | ff_amf_write_number(&p, 0); //no tracking back responses | |
797 | ff_amf_write_null(&p); //as usual, the first null param | |
798 | ff_amf_write_bool(&p, pause); // pause or unpause | |
799 | ff_amf_write_number(&p, timestamp); //where we pause the stream | |
800 | ||
801 | return rtmp_send_packet(rt, &pkt, 1); | |
802 | } | |
803 | ||
2ba45a60 DM |
804 | /** |
805 | * Generate 'publish' call and send it to the server. | |
806 | */ | |
807 | static int gen_publish(URLContext *s, RTMPContext *rt) | |
808 | { | |
809 | RTMPPacket pkt; | |
810 | uint8_t *p; | |
811 | int ret; | |
812 | ||
813 | av_log(s, AV_LOG_DEBUG, "Sending publish command for '%s'\n", rt->playpath); | |
814 | ||
815 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE, | |
816 | 0, 30 + strlen(rt->playpath))) < 0) | |
817 | return ret; | |
818 | ||
819 | pkt.extra = rt->stream_id; | |
820 | ||
821 | p = pkt.data; | |
822 | ff_amf_write_string(&p, "publish"); | |
823 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
824 | ff_amf_write_null(&p); | |
825 | ff_amf_write_string(&p, rt->playpath); | |
826 | ff_amf_write_string(&p, "live"); | |
827 | ||
828 | return rtmp_send_packet(rt, &pkt, 1); | |
829 | } | |
830 | ||
831 | /** | |
832 | * Generate ping reply and send it to the server. | |
833 | */ | |
834 | static int gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt) | |
835 | { | |
836 | RTMPPacket pkt; | |
837 | uint8_t *p; | |
838 | int ret; | |
839 | ||
840 | if (ppkt->size < 6) { | |
841 | av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n", | |
842 | ppkt->size); | |
843 | return AVERROR_INVALIDDATA; | |
844 | } | |
845 | ||
846 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, | |
847 | ppkt->timestamp + 1, 6)) < 0) | |
848 | return ret; | |
849 | ||
850 | p = pkt.data; | |
851 | bytestream_put_be16(&p, 7); | |
852 | bytestream_put_be32(&p, AV_RB32(ppkt->data+2)); | |
853 | ||
854 | return rtmp_send_packet(rt, &pkt, 0); | |
855 | } | |
856 | ||
857 | /** | |
858 | * Generate SWF verification message and send it to the server. | |
859 | */ | |
860 | static int gen_swf_verification(URLContext *s, RTMPContext *rt) | |
861 | { | |
862 | RTMPPacket pkt; | |
863 | uint8_t *p; | |
864 | int ret; | |
865 | ||
866 | av_log(s, AV_LOG_DEBUG, "Sending SWF verification...\n"); | |
867 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, | |
868 | 0, 44)) < 0) | |
869 | return ret; | |
870 | ||
871 | p = pkt.data; | |
872 | bytestream_put_be16(&p, 27); | |
873 | memcpy(p, rt->swfverification, 42); | |
874 | ||
875 | return rtmp_send_packet(rt, &pkt, 0); | |
876 | } | |
877 | ||
878 | /** | |
879 | * Generate server bandwidth message and send it to the server. | |
880 | */ | |
881 | static int gen_server_bw(URLContext *s, RTMPContext *rt) | |
882 | { | |
883 | RTMPPacket pkt; | |
884 | uint8_t *p; | |
885 | int ret; | |
886 | ||
887 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_SERVER_BW, | |
888 | 0, 4)) < 0) | |
889 | return ret; | |
890 | ||
891 | p = pkt.data; | |
892 | bytestream_put_be32(&p, rt->server_bw); | |
893 | ||
894 | return rtmp_send_packet(rt, &pkt, 0); | |
895 | } | |
896 | ||
897 | /** | |
898 | * Generate check bandwidth message and send it to the server. | |
899 | */ | |
900 | static int gen_check_bw(URLContext *s, RTMPContext *rt) | |
901 | { | |
902 | RTMPPacket pkt; | |
903 | uint8_t *p; | |
904 | int ret; | |
905 | ||
906 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
907 | 0, 21)) < 0) | |
908 | return ret; | |
909 | ||
910 | p = pkt.data; | |
911 | ff_amf_write_string(&p, "_checkbw"); | |
912 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
913 | ff_amf_write_null(&p); | |
914 | ||
915 | return rtmp_send_packet(rt, &pkt, 1); | |
916 | } | |
917 | ||
918 | /** | |
919 | * Generate report on bytes read so far and send it to the server. | |
920 | */ | |
921 | static int gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts) | |
922 | { | |
923 | RTMPPacket pkt; | |
924 | uint8_t *p; | |
925 | int ret; | |
926 | ||
927 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ, | |
928 | ts, 4)) < 0) | |
929 | return ret; | |
930 | ||
931 | p = pkt.data; | |
932 | bytestream_put_be32(&p, rt->bytes_read); | |
933 | ||
934 | return rtmp_send_packet(rt, &pkt, 0); | |
935 | } | |
936 | ||
937 | static int gen_fcsubscribe_stream(URLContext *s, RTMPContext *rt, | |
938 | const char *subscribe) | |
939 | { | |
940 | RTMPPacket pkt; | |
941 | uint8_t *p; | |
942 | int ret; | |
943 | ||
944 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
945 | 0, 27 + strlen(subscribe))) < 0) | |
946 | return ret; | |
947 | ||
948 | p = pkt.data; | |
949 | ff_amf_write_string(&p, "FCSubscribe"); | |
950 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
951 | ff_amf_write_null(&p); | |
952 | ff_amf_write_string(&p, subscribe); | |
953 | ||
954 | return rtmp_send_packet(rt, &pkt, 1); | |
955 | } | |
956 | ||
957 | int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap, | |
958 | const uint8_t *key, int keylen, uint8_t *dst) | |
959 | { | |
960 | struct AVSHA *sha; | |
961 | uint8_t hmac_buf[64+32] = {0}; | |
962 | int i; | |
963 | ||
964 | sha = av_sha_alloc(); | |
965 | if (!sha) | |
966 | return AVERROR(ENOMEM); | |
967 | ||
968 | if (keylen < 64) { | |
969 | memcpy(hmac_buf, key, keylen); | |
970 | } else { | |
971 | av_sha_init(sha, 256); | |
972 | av_sha_update(sha,key, keylen); | |
973 | av_sha_final(sha, hmac_buf); | |
974 | } | |
975 | for (i = 0; i < 64; i++) | |
976 | hmac_buf[i] ^= HMAC_IPAD_VAL; | |
977 | ||
978 | av_sha_init(sha, 256); | |
979 | av_sha_update(sha, hmac_buf, 64); | |
980 | if (gap <= 0) { | |
981 | av_sha_update(sha, src, len); | |
982 | } else { //skip 32 bytes used for storing digest | |
983 | av_sha_update(sha, src, gap); | |
984 | av_sha_update(sha, src + gap + 32, len - gap - 32); | |
985 | } | |
986 | av_sha_final(sha, hmac_buf + 64); | |
987 | ||
988 | for (i = 0; i < 64; i++) | |
989 | hmac_buf[i] ^= HMAC_IPAD_VAL ^ HMAC_OPAD_VAL; //reuse XORed key for opad | |
990 | av_sha_init(sha, 256); | |
991 | av_sha_update(sha, hmac_buf, 64+32); | |
992 | av_sha_final(sha, dst); | |
993 | ||
994 | av_free(sha); | |
995 | ||
996 | return 0; | |
997 | } | |
998 | ||
999 | int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val, | |
1000 | int add_val) | |
1001 | { | |
1002 | int i, digest_pos = 0; | |
1003 | ||
1004 | for (i = 0; i < 4; i++) | |
1005 | digest_pos += buf[i + off]; | |
1006 | digest_pos = digest_pos % mod_val + add_val; | |
1007 | ||
1008 | return digest_pos; | |
1009 | } | |
1010 | ||
1011 | /** | |
1012 | * Put HMAC-SHA2 digest of packet data (except for the bytes where this digest | |
1013 | * will be stored) into that packet. | |
1014 | * | |
1015 | * @param buf handshake data (1536 bytes) | |
1016 | * @param encrypted use an encrypted connection (RTMPE) | |
1017 | * @return offset to the digest inside input data | |
1018 | */ | |
1019 | static int rtmp_handshake_imprint_with_digest(uint8_t *buf, int encrypted) | |
1020 | { | |
1021 | int ret, digest_pos; | |
1022 | ||
1023 | if (encrypted) | |
1024 | digest_pos = ff_rtmp_calc_digest_pos(buf, 772, 728, 776); | |
1025 | else | |
1026 | digest_pos = ff_rtmp_calc_digest_pos(buf, 8, 728, 12); | |
1027 | ||
1028 | ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos, | |
1029 | rtmp_player_key, PLAYER_KEY_OPEN_PART_LEN, | |
1030 | buf + digest_pos); | |
1031 | if (ret < 0) | |
1032 | return ret; | |
1033 | ||
1034 | return digest_pos; | |
1035 | } | |
1036 | ||
1037 | /** | |
1038 | * Verify that the received server response has the expected digest value. | |
1039 | * | |
1040 | * @param buf handshake data received from the server (1536 bytes) | |
1041 | * @param off position to search digest offset from | |
1042 | * @return 0 if digest is valid, digest position otherwise | |
1043 | */ | |
1044 | static int rtmp_validate_digest(uint8_t *buf, int off) | |
1045 | { | |
1046 | uint8_t digest[32]; | |
1047 | int ret, digest_pos; | |
1048 | ||
1049 | digest_pos = ff_rtmp_calc_digest_pos(buf, off, 728, off + 4); | |
1050 | ||
1051 | ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos, | |
1052 | rtmp_server_key, SERVER_KEY_OPEN_PART_LEN, | |
1053 | digest); | |
1054 | if (ret < 0) | |
1055 | return ret; | |
1056 | ||
1057 | if (!memcmp(digest, buf + digest_pos, 32)) | |
1058 | return digest_pos; | |
1059 | return 0; | |
1060 | } | |
1061 | ||
1062 | static int rtmp_calc_swf_verification(URLContext *s, RTMPContext *rt, | |
1063 | uint8_t *buf) | |
1064 | { | |
1065 | uint8_t *p; | |
1066 | int ret; | |
1067 | ||
1068 | if (rt->swfhash_len != 32) { | |
1069 | av_log(s, AV_LOG_ERROR, | |
1070 | "Hash of the decompressed SWF file is not 32 bytes long.\n"); | |
1071 | return AVERROR(EINVAL); | |
1072 | } | |
1073 | ||
1074 | p = &rt->swfverification[0]; | |
1075 | bytestream_put_byte(&p, 1); | |
1076 | bytestream_put_byte(&p, 1); | |
1077 | bytestream_put_be32(&p, rt->swfsize); | |
1078 | bytestream_put_be32(&p, rt->swfsize); | |
1079 | ||
1080 | if ((ret = ff_rtmp_calc_digest(rt->swfhash, 32, 0, buf, 32, p)) < 0) | |
1081 | return ret; | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | #if CONFIG_ZLIB | |
1087 | static int rtmp_uncompress_swfplayer(uint8_t *in_data, int64_t in_size, | |
1088 | uint8_t **out_data, int64_t *out_size) | |
1089 | { | |
1090 | z_stream zs = { 0 }; | |
1091 | void *ptr; | |
1092 | int size; | |
1093 | int ret = 0; | |
1094 | ||
1095 | zs.avail_in = in_size; | |
1096 | zs.next_in = in_data; | |
1097 | ret = inflateInit(&zs); | |
1098 | if (ret != Z_OK) | |
1099 | return AVERROR_UNKNOWN; | |
1100 | ||
1101 | do { | |
1102 | uint8_t tmp_buf[16384]; | |
1103 | ||
1104 | zs.avail_out = sizeof(tmp_buf); | |
1105 | zs.next_out = tmp_buf; | |
1106 | ||
1107 | ret = inflate(&zs, Z_NO_FLUSH); | |
1108 | if (ret != Z_OK && ret != Z_STREAM_END) { | |
1109 | ret = AVERROR_UNKNOWN; | |
1110 | goto fail; | |
1111 | } | |
1112 | ||
1113 | size = sizeof(tmp_buf) - zs.avail_out; | |
1114 | if (!(ptr = av_realloc(*out_data, *out_size + size))) { | |
1115 | ret = AVERROR(ENOMEM); | |
1116 | goto fail; | |
1117 | } | |
1118 | *out_data = ptr; | |
1119 | ||
1120 | memcpy(*out_data + *out_size, tmp_buf, size); | |
1121 | *out_size += size; | |
1122 | } while (zs.avail_out == 0); | |
1123 | ||
1124 | fail: | |
1125 | inflateEnd(&zs); | |
1126 | return ret; | |
1127 | } | |
1128 | #endif | |
1129 | ||
1130 | static int rtmp_calc_swfhash(URLContext *s) | |
1131 | { | |
1132 | RTMPContext *rt = s->priv_data; | |
1133 | uint8_t *in_data = NULL, *out_data = NULL, *swfdata; | |
1134 | int64_t in_size, out_size; | |
1135 | URLContext *stream; | |
1136 | char swfhash[32]; | |
1137 | int swfsize; | |
1138 | int ret = 0; | |
1139 | ||
1140 | /* Get the SWF player file. */ | |
1141 | if ((ret = ffurl_open(&stream, rt->swfverify, AVIO_FLAG_READ, | |
1142 | &s->interrupt_callback, NULL)) < 0) { | |
1143 | av_log(s, AV_LOG_ERROR, "Cannot open connection %s.\n", rt->swfverify); | |
1144 | goto fail; | |
1145 | } | |
1146 | ||
1147 | if ((in_size = ffurl_seek(stream, 0, AVSEEK_SIZE)) < 0) { | |
1148 | ret = AVERROR(EIO); | |
1149 | goto fail; | |
1150 | } | |
1151 | ||
1152 | if (!(in_data = av_malloc(in_size))) { | |
1153 | ret = AVERROR(ENOMEM); | |
1154 | goto fail; | |
1155 | } | |
1156 | ||
1157 | if ((ret = ffurl_read_complete(stream, in_data, in_size)) < 0) | |
1158 | goto fail; | |
1159 | ||
1160 | if (in_size < 3) { | |
1161 | ret = AVERROR_INVALIDDATA; | |
1162 | goto fail; | |
1163 | } | |
1164 | ||
1165 | if (!memcmp(in_data, "CWS", 3)) { | |
1166 | /* Decompress the SWF player file using Zlib. */ | |
1167 | if (!(out_data = av_malloc(8))) { | |
1168 | ret = AVERROR(ENOMEM); | |
1169 | goto fail; | |
1170 | } | |
1171 | *in_data = 'F'; // magic stuff | |
1172 | memcpy(out_data, in_data, 8); | |
1173 | out_size = 8; | |
1174 | ||
1175 | #if CONFIG_ZLIB | |
1176 | if ((ret = rtmp_uncompress_swfplayer(in_data + 8, in_size - 8, | |
1177 | &out_data, &out_size)) < 0) | |
1178 | goto fail; | |
1179 | #else | |
1180 | av_log(s, AV_LOG_ERROR, | |
1181 | "Zlib is required for decompressing the SWF player file.\n"); | |
1182 | ret = AVERROR(EINVAL); | |
1183 | goto fail; | |
1184 | #endif | |
1185 | swfsize = out_size; | |
1186 | swfdata = out_data; | |
1187 | } else { | |
1188 | swfsize = in_size; | |
1189 | swfdata = in_data; | |
1190 | } | |
1191 | ||
1192 | /* Compute the SHA256 hash of the SWF player file. */ | |
1193 | if ((ret = ff_rtmp_calc_digest(swfdata, swfsize, 0, | |
1194 | "Genuine Adobe Flash Player 001", 30, | |
1195 | swfhash)) < 0) | |
1196 | goto fail; | |
1197 | ||
1198 | /* Set SWFVerification parameters. */ | |
1199 | av_opt_set_bin(rt, "rtmp_swfhash", swfhash, 32, 0); | |
1200 | rt->swfsize = swfsize; | |
1201 | ||
1202 | fail: | |
1203 | av_freep(&in_data); | |
1204 | av_freep(&out_data); | |
1205 | ffurl_close(stream); | |
1206 | return ret; | |
1207 | } | |
1208 | ||
1209 | /** | |
1210 | * Perform handshake with the server by means of exchanging pseudorandom data | |
1211 | * signed with HMAC-SHA2 digest. | |
1212 | * | |
1213 | * @return 0 if handshake succeeds, negative value otherwise | |
1214 | */ | |
1215 | static int rtmp_handshake(URLContext *s, RTMPContext *rt) | |
1216 | { | |
1217 | AVLFG rnd; | |
1218 | uint8_t tosend [RTMP_HANDSHAKE_PACKET_SIZE+1] = { | |
1219 | 3, // unencrypted data | |
1220 | 0, 0, 0, 0, // client uptime | |
1221 | RTMP_CLIENT_VER1, | |
1222 | RTMP_CLIENT_VER2, | |
1223 | RTMP_CLIENT_VER3, | |
1224 | RTMP_CLIENT_VER4, | |
1225 | }; | |
1226 | uint8_t clientdata[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1227 | uint8_t serverdata[RTMP_HANDSHAKE_PACKET_SIZE+1]; | |
1228 | int i; | |
1229 | int server_pos, client_pos; | |
1230 | uint8_t digest[32], signature[32]; | |
1231 | int ret, type = 0; | |
1232 | ||
1233 | av_log(s, AV_LOG_DEBUG, "Handshaking...\n"); | |
1234 | ||
1235 | av_lfg_init(&rnd, 0xDEADC0DE); | |
1236 | // generate handshake packet - 1536 bytes of pseudorandom data | |
1237 | for (i = 9; i <= RTMP_HANDSHAKE_PACKET_SIZE; i++) | |
1238 | tosend[i] = av_lfg_get(&rnd) >> 24; | |
1239 | ||
1240 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1241 | /* When the client wants to use RTMPE, we have to change the command | |
1242 | * byte to 0x06 which means to use encrypted data and we have to set | |
1243 | * the flash version to at least 9.0.115.0. */ | |
1244 | tosend[0] = 6; | |
1245 | tosend[5] = 128; | |
1246 | tosend[6] = 0; | |
1247 | tosend[7] = 3; | |
1248 | tosend[8] = 2; | |
1249 | ||
1250 | /* Initialize the Diffie-Hellmann context and generate the public key | |
1251 | * to send to the server. */ | |
1252 | if ((ret = ff_rtmpe_gen_pub_key(rt->stream, tosend + 1)) < 0) | |
1253 | return ret; | |
1254 | } | |
1255 | ||
1256 | client_pos = rtmp_handshake_imprint_with_digest(tosend + 1, rt->encrypted); | |
1257 | if (client_pos < 0) | |
1258 | return client_pos; | |
1259 | ||
1260 | if ((ret = ffurl_write(rt->stream, tosend, | |
1261 | RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) { | |
1262 | av_log(s, AV_LOG_ERROR, "Cannot write RTMP handshake request\n"); | |
1263 | return ret; | |
1264 | } | |
1265 | ||
1266 | if ((ret = ffurl_read_complete(rt->stream, serverdata, | |
1267 | RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) { | |
1268 | av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n"); | |
1269 | return ret; | |
1270 | } | |
1271 | ||
1272 | if ((ret = ffurl_read_complete(rt->stream, clientdata, | |
1273 | RTMP_HANDSHAKE_PACKET_SIZE)) < 0) { | |
1274 | av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n"); | |
1275 | return ret; | |
1276 | } | |
1277 | ||
1278 | av_log(s, AV_LOG_DEBUG, "Type answer %d\n", serverdata[0]); | |
1279 | av_log(s, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n", | |
1280 | serverdata[5], serverdata[6], serverdata[7], serverdata[8]); | |
1281 | ||
1282 | if (rt->is_input && serverdata[5] >= 3) { | |
1283 | server_pos = rtmp_validate_digest(serverdata + 1, 772); | |
1284 | if (server_pos < 0) | |
1285 | return server_pos; | |
1286 | ||
1287 | if (!server_pos) { | |
1288 | type = 1; | |
1289 | server_pos = rtmp_validate_digest(serverdata + 1, 8); | |
1290 | if (server_pos < 0) | |
1291 | return server_pos; | |
1292 | ||
1293 | if (!server_pos) { | |
1294 | av_log(s, AV_LOG_ERROR, "Server response validating failed\n"); | |
1295 | return AVERROR(EIO); | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | /* Generate SWFVerification token (SHA256 HMAC hash of decompressed SWF, | |
1300 | * key are the last 32 bytes of the server handshake. */ | |
1301 | if (rt->swfsize) { | |
1302 | if ((ret = rtmp_calc_swf_verification(s, rt, serverdata + 1 + | |
1303 | RTMP_HANDSHAKE_PACKET_SIZE - 32)) < 0) | |
1304 | return ret; | |
1305 | } | |
1306 | ||
1307 | ret = ff_rtmp_calc_digest(tosend + 1 + client_pos, 32, 0, | |
1308 | rtmp_server_key, sizeof(rtmp_server_key), | |
1309 | digest); | |
1310 | if (ret < 0) | |
1311 | return ret; | |
1312 | ||
1313 | ret = ff_rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE - 32, | |
1314 | 0, digest, 32, signature); | |
1315 | if (ret < 0) | |
1316 | return ret; | |
1317 | ||
1318 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1319 | /* Compute the shared secret key sent by the server and initialize | |
1320 | * the RC4 encryption. */ | |
1321 | if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1, | |
1322 | tosend + 1, type)) < 0) | |
1323 | return ret; | |
1324 | ||
1325 | /* Encrypt the signature received by the server. */ | |
1326 | ff_rtmpe_encrypt_sig(rt->stream, signature, digest, serverdata[0]); | |
1327 | } | |
1328 | ||
1329 | if (memcmp(signature, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) { | |
1330 | av_log(s, AV_LOG_ERROR, "Signature mismatch\n"); | |
1331 | return AVERROR(EIO); | |
1332 | } | |
1333 | ||
1334 | for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++) | |
1335 | tosend[i] = av_lfg_get(&rnd) >> 24; | |
1336 | ret = ff_rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0, | |
1337 | rtmp_player_key, sizeof(rtmp_player_key), | |
1338 | digest); | |
1339 | if (ret < 0) | |
1340 | return ret; | |
1341 | ||
1342 | ret = ff_rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0, | |
1343 | digest, 32, | |
1344 | tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32); | |
1345 | if (ret < 0) | |
1346 | return ret; | |
1347 | ||
1348 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1349 | /* Encrypt the signature to be send to the server. */ | |
1350 | ff_rtmpe_encrypt_sig(rt->stream, tosend + | |
1351 | RTMP_HANDSHAKE_PACKET_SIZE - 32, digest, | |
1352 | serverdata[0]); | |
1353 | } | |
1354 | ||
1355 | // write reply back to the server | |
1356 | if ((ret = ffurl_write(rt->stream, tosend, | |
1357 | RTMP_HANDSHAKE_PACKET_SIZE)) < 0) | |
1358 | return ret; | |
1359 | ||
1360 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1361 | /* Set RC4 keys for encryption and update the keystreams. */ | |
1362 | if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0) | |
1363 | return ret; | |
1364 | } | |
1365 | } else { | |
1366 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1367 | /* Compute the shared secret key sent by the server and initialize | |
1368 | * the RC4 encryption. */ | |
1369 | if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1, | |
1370 | tosend + 1, 1)) < 0) | |
1371 | return ret; | |
1372 | ||
1373 | if (serverdata[0] == 9) { | |
1374 | /* Encrypt the signature received by the server. */ | |
1375 | ff_rtmpe_encrypt_sig(rt->stream, signature, digest, | |
1376 | serverdata[0]); | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | if ((ret = ffurl_write(rt->stream, serverdata + 1, | |
1381 | RTMP_HANDSHAKE_PACKET_SIZE)) < 0) | |
1382 | return ret; | |
1383 | ||
1384 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1385 | /* Set RC4 keys for encryption and update the keystreams. */ | |
1386 | if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0) | |
1387 | return ret; | |
1388 | } | |
1389 | } | |
1390 | ||
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | static int rtmp_receive_hs_packet(RTMPContext* rt, uint32_t *first_int, | |
1395 | uint32_t *second_int, char *arraydata, | |
1396 | int size) | |
1397 | { | |
1398 | int inoutsize; | |
1399 | ||
1400 | inoutsize = ffurl_read_complete(rt->stream, arraydata, | |
1401 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1402 | if (inoutsize <= 0) | |
1403 | return AVERROR(EIO); | |
1404 | if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) { | |
1405 | av_log(rt, AV_LOG_ERROR, "Erroneous Message size %d" | |
1406 | " not following standard\n", (int)inoutsize); | |
1407 | return AVERROR(EINVAL); | |
1408 | } | |
1409 | ||
1410 | *first_int = AV_RB32(arraydata); | |
1411 | *second_int = AV_RB32(arraydata + 4); | |
1412 | return 0; | |
1413 | } | |
1414 | ||
1415 | static int rtmp_send_hs_packet(RTMPContext* rt, uint32_t first_int, | |
1416 | uint32_t second_int, char *arraydata, int size) | |
1417 | { | |
1418 | int inoutsize; | |
1419 | ||
1420 | AV_WB32(arraydata, first_int); | |
1421 | AV_WB32(arraydata + 4, second_int); | |
1422 | inoutsize = ffurl_write(rt->stream, arraydata, | |
1423 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1424 | if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) { | |
1425 | av_log(rt, AV_LOG_ERROR, "Unable to write answer\n"); | |
1426 | return AVERROR(EIO); | |
1427 | } | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | ||
1432 | /** | |
1433 | * rtmp handshake server side | |
1434 | */ | |
1435 | static int rtmp_server_handshake(URLContext *s, RTMPContext *rt) | |
1436 | { | |
1437 | uint8_t buffer[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1438 | uint32_t hs_epoch; | |
1439 | uint32_t hs_my_epoch; | |
1440 | uint8_t hs_c1[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1441 | uint8_t hs_s1[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1442 | uint32_t zeroes; | |
1443 | uint32_t temp = 0; | |
1444 | int randomidx = 0; | |
1445 | int inoutsize = 0; | |
1446 | int ret; | |
1447 | ||
1448 | inoutsize = ffurl_read_complete(rt->stream, buffer, 1); // Receive C0 | |
1449 | if (inoutsize <= 0) { | |
1450 | av_log(s, AV_LOG_ERROR, "Unable to read handshake\n"); | |
1451 | return AVERROR(EIO); | |
1452 | } | |
1453 | // Check Version | |
1454 | if (buffer[0] != 3) { | |
1455 | av_log(s, AV_LOG_ERROR, "RTMP protocol version mismatch\n"); | |
1456 | return AVERROR(EIO); | |
1457 | } | |
1458 | if (ffurl_write(rt->stream, buffer, 1) <= 0) { // Send S0 | |
1459 | av_log(s, AV_LOG_ERROR, | |
1460 | "Unable to write answer - RTMP S0\n"); | |
1461 | return AVERROR(EIO); | |
1462 | } | |
1463 | /* Receive C1 */ | |
1464 | ret = rtmp_receive_hs_packet(rt, &hs_epoch, &zeroes, hs_c1, | |
1465 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1466 | if (ret) { | |
1467 | av_log(s, AV_LOG_ERROR, "RTMP Handshake C1 Error\n"); | |
1468 | return ret; | |
1469 | } | |
1470 | /* Send S1 */ | |
1471 | /* By now same epoch will be sent */ | |
1472 | hs_my_epoch = hs_epoch; | |
1473 | /* Generate random */ | |
1474 | for (randomidx = 8; randomidx < (RTMP_HANDSHAKE_PACKET_SIZE); | |
1475 | randomidx += 4) | |
1476 | AV_WB32(hs_s1 + randomidx, av_get_random_seed()); | |
1477 | ||
1478 | ret = rtmp_send_hs_packet(rt, hs_my_epoch, 0, hs_s1, | |
1479 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1480 | if (ret) { | |
1481 | av_log(s, AV_LOG_ERROR, "RTMP Handshake S1 Error\n"); | |
1482 | return ret; | |
1483 | } | |
1484 | /* Send S2 */ | |
1485 | ret = rtmp_send_hs_packet(rt, hs_epoch, 0, hs_c1, | |
1486 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1487 | if (ret) { | |
1488 | av_log(s, AV_LOG_ERROR, "RTMP Handshake S2 Error\n"); | |
1489 | return ret; | |
1490 | } | |
1491 | /* Receive C2 */ | |
1492 | ret = rtmp_receive_hs_packet(rt, &temp, &zeroes, buffer, | |
1493 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1494 | if (ret) { | |
1495 | av_log(s, AV_LOG_ERROR, "RTMP Handshake C2 Error\n"); | |
1496 | return ret; | |
1497 | } | |
1498 | if (temp != hs_my_epoch) | |
1499 | av_log(s, AV_LOG_WARNING, | |
1500 | "Erroneous C2 Message epoch does not match up with C1 epoch\n"); | |
1501 | if (memcmp(buffer + 8, hs_s1 + 8, | |
1502 | RTMP_HANDSHAKE_PACKET_SIZE - 8)) | |
1503 | av_log(s, AV_LOG_WARNING, | |
1504 | "Erroneous C2 Message random does not match up\n"); | |
1505 | ||
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | static int handle_chunk_size(URLContext *s, RTMPPacket *pkt) | |
1510 | { | |
1511 | RTMPContext *rt = s->priv_data; | |
1512 | int ret; | |
1513 | ||
1514 | if (pkt->size < 4) { | |
1515 | av_log(s, AV_LOG_ERROR, | |
1516 | "Too short chunk size change packet (%d)\n", | |
1517 | pkt->size); | |
1518 | return AVERROR_INVALIDDATA; | |
1519 | } | |
1520 | ||
1521 | if (!rt->is_input) { | |
1522 | /* Send the same chunk size change packet back to the server, | |
1523 | * setting the outgoing chunk size to the same as the incoming one. */ | |
1524 | if ((ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size, | |
1525 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1])) < 0) | |
1526 | return ret; | |
1527 | rt->out_chunk_size = AV_RB32(pkt->data); | |
1528 | } | |
1529 | ||
1530 | rt->in_chunk_size = AV_RB32(pkt->data); | |
1531 | if (rt->in_chunk_size <= 0) { | |
1532 | av_log(s, AV_LOG_ERROR, "Incorrect chunk size %d\n", | |
1533 | rt->in_chunk_size); | |
1534 | return AVERROR_INVALIDDATA; | |
1535 | } | |
1536 | av_log(s, AV_LOG_DEBUG, "New incoming chunk size = %d\n", | |
1537 | rt->in_chunk_size); | |
1538 | ||
1539 | return 0; | |
1540 | } | |
1541 | ||
1542 | static int handle_ping(URLContext *s, RTMPPacket *pkt) | |
1543 | { | |
1544 | RTMPContext *rt = s->priv_data; | |
1545 | int t, ret; | |
1546 | ||
1547 | if (pkt->size < 2) { | |
1548 | av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n", | |
1549 | pkt->size); | |
1550 | return AVERROR_INVALIDDATA; | |
1551 | } | |
1552 | ||
1553 | t = AV_RB16(pkt->data); | |
1554 | if (t == 6) { | |
1555 | if ((ret = gen_pong(s, rt, pkt)) < 0) | |
1556 | return ret; | |
1557 | } else if (t == 26) { | |
1558 | if (rt->swfsize) { | |
1559 | if ((ret = gen_swf_verification(s, rt)) < 0) | |
1560 | return ret; | |
1561 | } else { | |
1562 | av_log(s, AV_LOG_WARNING, "Ignoring SWFVerification request.\n"); | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | static int handle_client_bw(URLContext *s, RTMPPacket *pkt) | |
1570 | { | |
1571 | RTMPContext *rt = s->priv_data; | |
1572 | ||
1573 | if (pkt->size < 4) { | |
1574 | av_log(s, AV_LOG_ERROR, | |
1575 | "Client bandwidth report packet is less than 4 bytes long (%d)\n", | |
1576 | pkt->size); | |
1577 | return AVERROR_INVALIDDATA; | |
1578 | } | |
1579 | ||
1580 | rt->client_report_size = AV_RB32(pkt->data); | |
1581 | if (rt->client_report_size <= 0) { | |
1582 | av_log(s, AV_LOG_ERROR, "Incorrect client bandwidth %d\n", | |
1583 | rt->client_report_size); | |
1584 | return AVERROR_INVALIDDATA; | |
1585 | ||
1586 | } | |
1587 | av_log(s, AV_LOG_DEBUG, "Client bandwidth = %d\n", rt->client_report_size); | |
1588 | rt->client_report_size >>= 1; | |
1589 | ||
1590 | return 0; | |
1591 | } | |
1592 | ||
1593 | static int handle_server_bw(URLContext *s, RTMPPacket *pkt) | |
1594 | { | |
1595 | RTMPContext *rt = s->priv_data; | |
1596 | ||
1597 | if (pkt->size < 4) { | |
1598 | av_log(s, AV_LOG_ERROR, | |
1599 | "Too short server bandwidth report packet (%d)\n", | |
1600 | pkt->size); | |
1601 | return AVERROR_INVALIDDATA; | |
1602 | } | |
1603 | ||
1604 | rt->server_bw = AV_RB32(pkt->data); | |
1605 | if (rt->server_bw <= 0) { | |
1606 | av_log(s, AV_LOG_ERROR, "Incorrect server bandwidth %d\n", | |
1607 | rt->server_bw); | |
1608 | return AVERROR_INVALIDDATA; | |
1609 | } | |
1610 | av_log(s, AV_LOG_DEBUG, "Server bandwidth = %d\n", rt->server_bw); | |
1611 | ||
1612 | return 0; | |
1613 | } | |
1614 | ||
1615 | static int do_adobe_auth(RTMPContext *rt, const char *user, const char *salt, | |
1616 | const char *opaque, const char *challenge) | |
1617 | { | |
1618 | uint8_t hash[16]; | |
1619 | char hashstr[AV_BASE64_SIZE(sizeof(hash))], challenge2[10]; | |
1620 | struct AVMD5 *md5 = av_md5_alloc(); | |
1621 | if (!md5) | |
1622 | return AVERROR(ENOMEM); | |
1623 | ||
1624 | snprintf(challenge2, sizeof(challenge2), "%08x", av_get_random_seed()); | |
1625 | ||
1626 | av_md5_init(md5); | |
1627 | av_md5_update(md5, user, strlen(user)); | |
1628 | av_md5_update(md5, salt, strlen(salt)); | |
1629 | av_md5_update(md5, rt->password, strlen(rt->password)); | |
1630 | av_md5_final(md5, hash); | |
1631 | av_base64_encode(hashstr, sizeof(hashstr), hash, | |
1632 | sizeof(hash)); | |
1633 | av_md5_init(md5); | |
1634 | av_md5_update(md5, hashstr, strlen(hashstr)); | |
1635 | if (opaque) | |
1636 | av_md5_update(md5, opaque, strlen(opaque)); | |
1637 | else if (challenge) | |
1638 | av_md5_update(md5, challenge, strlen(challenge)); | |
1639 | av_md5_update(md5, challenge2, strlen(challenge2)); | |
1640 | av_md5_final(md5, hash); | |
1641 | av_base64_encode(hashstr, sizeof(hashstr), hash, | |
1642 | sizeof(hash)); | |
1643 | snprintf(rt->auth_params, sizeof(rt->auth_params), | |
1644 | "?authmod=%s&user=%s&challenge=%s&response=%s", | |
1645 | "adobe", user, challenge2, hashstr); | |
1646 | if (opaque) | |
1647 | av_strlcatf(rt->auth_params, sizeof(rt->auth_params), | |
1648 | "&opaque=%s", opaque); | |
1649 | ||
1650 | av_free(md5); | |
1651 | return 0; | |
1652 | } | |
1653 | ||
1654 | static int do_llnw_auth(RTMPContext *rt, const char *user, const char *nonce) | |
1655 | { | |
1656 | uint8_t hash[16]; | |
1657 | char hashstr1[33], hashstr2[33]; | |
1658 | const char *realm = "live"; | |
1659 | const char *method = "publish"; | |
1660 | const char *qop = "auth"; | |
1661 | const char *nc = "00000001"; | |
1662 | char cnonce[10]; | |
1663 | struct AVMD5 *md5 = av_md5_alloc(); | |
1664 | if (!md5) | |
1665 | return AVERROR(ENOMEM); | |
1666 | ||
1667 | snprintf(cnonce, sizeof(cnonce), "%08x", av_get_random_seed()); | |
1668 | ||
1669 | av_md5_init(md5); | |
1670 | av_md5_update(md5, user, strlen(user)); | |
1671 | av_md5_update(md5, ":", 1); | |
1672 | av_md5_update(md5, realm, strlen(realm)); | |
1673 | av_md5_update(md5, ":", 1); | |
1674 | av_md5_update(md5, rt->password, strlen(rt->password)); | |
1675 | av_md5_final(md5, hash); | |
1676 | ff_data_to_hex(hashstr1, hash, 16, 1); | |
1677 | hashstr1[32] = '\0'; | |
1678 | ||
1679 | av_md5_init(md5); | |
1680 | av_md5_update(md5, method, strlen(method)); | |
1681 | av_md5_update(md5, ":/", 2); | |
1682 | av_md5_update(md5, rt->app, strlen(rt->app)); | |
1683 | if (!strchr(rt->app, '/')) | |
1684 | av_md5_update(md5, "/_definst_", strlen("/_definst_")); | |
1685 | av_md5_final(md5, hash); | |
1686 | ff_data_to_hex(hashstr2, hash, 16, 1); | |
1687 | hashstr2[32] = '\0'; | |
1688 | ||
1689 | av_md5_init(md5); | |
1690 | av_md5_update(md5, hashstr1, strlen(hashstr1)); | |
1691 | av_md5_update(md5, ":", 1); | |
1692 | if (nonce) | |
1693 | av_md5_update(md5, nonce, strlen(nonce)); | |
1694 | av_md5_update(md5, ":", 1); | |
1695 | av_md5_update(md5, nc, strlen(nc)); | |
1696 | av_md5_update(md5, ":", 1); | |
1697 | av_md5_update(md5, cnonce, strlen(cnonce)); | |
1698 | av_md5_update(md5, ":", 1); | |
1699 | av_md5_update(md5, qop, strlen(qop)); | |
1700 | av_md5_update(md5, ":", 1); | |
1701 | av_md5_update(md5, hashstr2, strlen(hashstr2)); | |
1702 | av_md5_final(md5, hash); | |
1703 | ff_data_to_hex(hashstr1, hash, 16, 1); | |
1704 | ||
1705 | snprintf(rt->auth_params, sizeof(rt->auth_params), | |
1706 | "?authmod=%s&user=%s&nonce=%s&cnonce=%s&nc=%s&response=%s", | |
1707 | "llnw", user, nonce, cnonce, nc, hashstr1); | |
1708 | ||
1709 | av_free(md5); | |
1710 | return 0; | |
1711 | } | |
1712 | ||
1713 | static int handle_connect_error(URLContext *s, const char *desc) | |
1714 | { | |
1715 | RTMPContext *rt = s->priv_data; | |
1716 | char buf[300], *ptr, authmod[15]; | |
1717 | int i = 0, ret = 0; | |
1718 | const char *user = "", *salt = "", *opaque = NULL, | |
1719 | *challenge = NULL, *cptr = NULL, *nonce = NULL; | |
1720 | ||
1721 | if (!(cptr = strstr(desc, "authmod=adobe")) && | |
1722 | !(cptr = strstr(desc, "authmod=llnw"))) { | |
1723 | av_log(s, AV_LOG_ERROR, | |
1724 | "Unknown connect error (unsupported authentication method?)\n"); | |
1725 | return AVERROR_UNKNOWN; | |
1726 | } | |
1727 | cptr += strlen("authmod="); | |
1728 | while (*cptr && *cptr != ' ' && i < sizeof(authmod) - 1) | |
1729 | authmod[i++] = *cptr++; | |
1730 | authmod[i] = '\0'; | |
1731 | ||
1732 | if (!rt->username[0] || !rt->password[0]) { | |
1733 | av_log(s, AV_LOG_ERROR, "No credentials set\n"); | |
1734 | return AVERROR_UNKNOWN; | |
1735 | } | |
1736 | ||
1737 | if (strstr(desc, "?reason=authfailed")) { | |
1738 | av_log(s, AV_LOG_ERROR, "Incorrect username/password\n"); | |
1739 | return AVERROR_UNKNOWN; | |
1740 | } else if (strstr(desc, "?reason=nosuchuser")) { | |
1741 | av_log(s, AV_LOG_ERROR, "Incorrect username\n"); | |
1742 | return AVERROR_UNKNOWN; | |
1743 | } | |
1744 | ||
1745 | if (rt->auth_tried) { | |
1746 | av_log(s, AV_LOG_ERROR, "Authentication failed\n"); | |
1747 | return AVERROR_UNKNOWN; | |
1748 | } | |
1749 | ||
1750 | rt->auth_params[0] = '\0'; | |
1751 | ||
1752 | if (strstr(desc, "code=403 need auth")) { | |
1753 | snprintf(rt->auth_params, sizeof(rt->auth_params), | |
1754 | "?authmod=%s&user=%s", authmod, rt->username); | |
1755 | return 0; | |
1756 | } | |
1757 | ||
1758 | if (!(cptr = strstr(desc, "?reason=needauth"))) { | |
1759 | av_log(s, AV_LOG_ERROR, "No auth parameters found\n"); | |
1760 | return AVERROR_UNKNOWN; | |
1761 | } | |
1762 | ||
1763 | av_strlcpy(buf, cptr + 1, sizeof(buf)); | |
1764 | ptr = buf; | |
1765 | ||
1766 | while (ptr) { | |
1767 | char *next = strchr(ptr, '&'); | |
1768 | char *value = strchr(ptr, '='); | |
1769 | if (next) | |
1770 | *next++ = '\0'; | |
1771 | if (value) { | |
1772 | *value++ = '\0'; | |
1773 | if (!strcmp(ptr, "user")) { | |
1774 | user = value; | |
1775 | } else if (!strcmp(ptr, "salt")) { | |
1776 | salt = value; | |
1777 | } else if (!strcmp(ptr, "opaque")) { | |
1778 | opaque = value; | |
1779 | } else if (!strcmp(ptr, "challenge")) { | |
1780 | challenge = value; | |
1781 | } else if (!strcmp(ptr, "nonce")) { | |
1782 | nonce = value; | |
1783 | } else { | |
1784 | av_log(s, AV_LOG_INFO, "Ignoring unsupported var %s\n", ptr); | |
1785 | } | |
1786 | } else { | |
1787 | av_log(s, AV_LOG_WARNING, "Variable %s has NULL value\n", ptr); | |
1788 | } | |
1789 | ptr = next; | |
1790 | } | |
1791 | ||
1792 | if (!strcmp(authmod, "adobe")) { | |
1793 | if ((ret = do_adobe_auth(rt, user, salt, opaque, challenge)) < 0) | |
1794 | return ret; | |
1795 | } else { | |
1796 | if ((ret = do_llnw_auth(rt, user, nonce)) < 0) | |
1797 | return ret; | |
1798 | } | |
1799 | ||
1800 | rt->auth_tried = 1; | |
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | static int handle_invoke_error(URLContext *s, RTMPPacket *pkt) | |
1805 | { | |
1806 | RTMPContext *rt = s->priv_data; | |
1807 | const uint8_t *data_end = pkt->data + pkt->size; | |
1808 | char *tracked_method = NULL; | |
1809 | int level = AV_LOG_ERROR; | |
1810 | uint8_t tmpstr[256]; | |
1811 | int ret; | |
1812 | ||
1813 | if ((ret = find_tracked_method(s, pkt, 9, &tracked_method)) < 0) | |
1814 | return ret; | |
1815 | ||
1816 | if (!ff_amf_get_field_value(pkt->data + 9, data_end, | |
1817 | "description", tmpstr, sizeof(tmpstr))) { | |
1818 | if (tracked_method && (!strcmp(tracked_method, "_checkbw") || | |
1819 | !strcmp(tracked_method, "releaseStream") || | |
1820 | !strcmp(tracked_method, "FCSubscribe") || | |
1821 | !strcmp(tracked_method, "FCPublish"))) { | |
1822 | /* Gracefully ignore Adobe-specific historical artifact errors. */ | |
1823 | level = AV_LOG_WARNING; | |
1824 | ret = 0; | |
f6fa7814 DM |
1825 | } else if (tracked_method && !strcmp(tracked_method, "getStreamLength")) { |
1826 | level = rt->live ? AV_LOG_DEBUG : AV_LOG_WARNING; | |
1827 | ret = 0; | |
2ba45a60 DM |
1828 | } else if (tracked_method && !strcmp(tracked_method, "connect")) { |
1829 | ret = handle_connect_error(s, tmpstr); | |
1830 | if (!ret) { | |
1831 | rt->do_reconnect = 1; | |
1832 | level = AV_LOG_VERBOSE; | |
1833 | } | |
1834 | } else | |
1835 | ret = AVERROR_UNKNOWN; | |
1836 | av_log(s, level, "Server error: %s\n", tmpstr); | |
1837 | } | |
1838 | ||
1839 | av_free(tracked_method); | |
1840 | return ret; | |
1841 | } | |
1842 | ||
1843 | static int write_begin(URLContext *s) | |
1844 | { | |
1845 | RTMPContext *rt = s->priv_data; | |
1846 | PutByteContext pbc; | |
1847 | RTMPPacket spkt = { 0 }; | |
1848 | int ret; | |
1849 | ||
1850 | // Send Stream Begin 1 | |
1851 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_NETWORK_CHANNEL, | |
1852 | RTMP_PT_PING, 0, 6)) < 0) { | |
1853 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1854 | return ret; | |
1855 | } | |
1856 | ||
1857 | bytestream2_init_writer(&pbc, spkt.data, spkt.size); | |
1858 | bytestream2_put_be16(&pbc, 0); // 0 -> Stream Begin | |
1859 | bytestream2_put_be32(&pbc, rt->nb_streamid); | |
1860 | ||
1861 | ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size, | |
1862 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
1863 | ||
1864 | ff_rtmp_packet_destroy(&spkt); | |
1865 | ||
1866 | return ret; | |
1867 | } | |
1868 | ||
1869 | static int write_status(URLContext *s, RTMPPacket *pkt, | |
1870 | const char *status, const char *filename) | |
1871 | { | |
1872 | RTMPContext *rt = s->priv_data; | |
1873 | RTMPPacket spkt = { 0 }; | |
1874 | char statusmsg[128]; | |
1875 | uint8_t *pp; | |
1876 | int ret; | |
1877 | ||
1878 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL, | |
1879 | RTMP_PT_INVOKE, 0, | |
1880 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) { | |
1881 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1882 | return ret; | |
1883 | } | |
1884 | ||
1885 | pp = spkt.data; | |
1886 | spkt.extra = pkt->extra; | |
1887 | ff_amf_write_string(&pp, "onStatus"); | |
1888 | ff_amf_write_number(&pp, 0); | |
1889 | ff_amf_write_null(&pp); | |
1890 | ||
1891 | ff_amf_write_object_start(&pp); | |
1892 | ff_amf_write_field_name(&pp, "level"); | |
1893 | ff_amf_write_string(&pp, "status"); | |
1894 | ff_amf_write_field_name(&pp, "code"); | |
1895 | ff_amf_write_string(&pp, status); | |
1896 | ff_amf_write_field_name(&pp, "description"); | |
1897 | snprintf(statusmsg, sizeof(statusmsg), | |
1898 | "%s is now published", filename); | |
1899 | ff_amf_write_string(&pp, statusmsg); | |
1900 | ff_amf_write_field_name(&pp, "details"); | |
1901 | ff_amf_write_string(&pp, filename); | |
1902 | ff_amf_write_field_name(&pp, "clientid"); | |
1903 | snprintf(statusmsg, sizeof(statusmsg), "%s", LIBAVFORMAT_IDENT); | |
1904 | ff_amf_write_string(&pp, statusmsg); | |
1905 | ff_amf_write_object_end(&pp); | |
1906 | ||
1907 | spkt.size = pp - spkt.data; | |
1908 | ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size, | |
1909 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
1910 | ff_rtmp_packet_destroy(&spkt); | |
1911 | ||
1912 | return ret; | |
1913 | } | |
1914 | ||
1915 | static int send_invoke_response(URLContext *s, RTMPPacket *pkt) | |
1916 | { | |
1917 | RTMPContext *rt = s->priv_data; | |
1918 | double seqnum; | |
1919 | char filename[64]; | |
1920 | char command[64]; | |
1921 | int stringlen; | |
1922 | char *pchar; | |
1923 | const uint8_t *p = pkt->data; | |
1924 | uint8_t *pp = NULL; | |
1925 | RTMPPacket spkt = { 0 }; | |
1926 | GetByteContext gbc; | |
1927 | int ret; | |
1928 | ||
1929 | bytestream2_init(&gbc, p, pkt->size); | |
1930 | if (ff_amf_read_string(&gbc, command, sizeof(command), | |
1931 | &stringlen)) { | |
1932 | av_log(s, AV_LOG_ERROR, "Error in PT_INVOKE\n"); | |
1933 | return AVERROR_INVALIDDATA; | |
1934 | } | |
1935 | ||
1936 | ret = ff_amf_read_number(&gbc, &seqnum); | |
1937 | if (ret) | |
1938 | return ret; | |
1939 | ret = ff_amf_read_null(&gbc); | |
1940 | if (ret) | |
1941 | return ret; | |
1942 | if (!strcmp(command, "FCPublish") || | |
1943 | !strcmp(command, "publish")) { | |
1944 | ret = ff_amf_read_string(&gbc, filename, | |
1945 | sizeof(filename), &stringlen); | |
1946 | // check with url | |
1947 | if (s->filename) { | |
1948 | pchar = strrchr(s->filename, '/'); | |
1949 | if (!pchar) { | |
1950 | av_log(s, AV_LOG_WARNING, | |
1951 | "Unable to find / in url %s, bad format\n", | |
1952 | s->filename); | |
1953 | pchar = s->filename; | |
1954 | } | |
1955 | pchar++; | |
1956 | if (strcmp(pchar, filename)) | |
1957 | av_log(s, AV_LOG_WARNING, "Unexpected stream %s, expecting" | |
1958 | " %s\n", filename, pchar); | |
1959 | } | |
1960 | rt->state = STATE_RECEIVING; | |
1961 | } | |
1962 | ||
1963 | if (!strcmp(command, "FCPublish")) { | |
1964 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL, | |
1965 | RTMP_PT_INVOKE, 0, | |
1966 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) { | |
1967 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1968 | return ret; | |
1969 | } | |
1970 | pp = spkt.data; | |
1971 | ff_amf_write_string(&pp, "onFCPublish"); | |
1972 | } else if (!strcmp(command, "publish")) { | |
1973 | ret = write_begin(s); | |
1974 | if (ret < 0) | |
1975 | return ret; | |
1976 | ||
1977 | // Send onStatus(NetStream.Publish.Start) | |
1978 | return write_status(s, pkt, "NetStream.Publish.Start", | |
1979 | filename); | |
1980 | } else if (!strcmp(command, "play")) { | |
1981 | ret = write_begin(s); | |
1982 | if (ret < 0) | |
1983 | return ret; | |
1984 | rt->state = STATE_SENDING; | |
1985 | return write_status(s, pkt, "NetStream.Play.Start", | |
1986 | filename); | |
1987 | } else { | |
1988 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL, | |
1989 | RTMP_PT_INVOKE, 0, | |
1990 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) { | |
1991 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1992 | return ret; | |
1993 | } | |
1994 | pp = spkt.data; | |
1995 | ff_amf_write_string(&pp, "_result"); | |
1996 | ff_amf_write_number(&pp, seqnum); | |
1997 | ff_amf_write_null(&pp); | |
1998 | if (!strcmp(command, "createStream")) { | |
1999 | rt->nb_streamid++; | |
2000 | if (rt->nb_streamid == 0 || rt->nb_streamid == 2) | |
2001 | rt->nb_streamid++; /* Values 0 and 2 are reserved */ | |
2002 | ff_amf_write_number(&pp, rt->nb_streamid); | |
2003 | /* By now we don't control which streams are removed in | |
2004 | * deleteStream. There is no stream creation control | |
2005 | * if a client creates more than 2^32 - 2 streams. */ | |
2006 | } | |
2007 | } | |
2008 | spkt.size = pp - spkt.data; | |
2009 | ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size, | |
2010 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
2011 | ff_rtmp_packet_destroy(&spkt); | |
2012 | return ret; | |
2013 | } | |
2014 | ||
f6fa7814 DM |
2015 | /** |
2016 | * Read the AMF_NUMBER response ("_result") to a function call | |
2017 | * (e.g. createStream()). This response should be made up of the AMF_STRING | |
2018 | * "result", a NULL object and then the response encoded as AMF_NUMBER. On a | |
2019 | * successful response, we will return set the value to number (otherwise number | |
2020 | * will not be changed). | |
2021 | * | |
2022 | * @return 0 if reading the value succeeds, negative value otherwiss | |
2023 | */ | |
2024 | static int read_number_result(RTMPPacket *pkt, double *number) | |
2025 | { | |
2026 | // We only need to fit "_result" in this. | |
2027 | uint8_t strbuffer[8]; | |
2028 | int stringlen; | |
2029 | double numbuffer; | |
2030 | GetByteContext gbc; | |
2031 | ||
2032 | bytestream2_init(&gbc, pkt->data, pkt->size); | |
2033 | ||
2034 | // Value 1/4: "_result" as AMF_STRING | |
2035 | if (ff_amf_read_string(&gbc, strbuffer, sizeof(strbuffer), &stringlen)) | |
2036 | return AVERROR_INVALIDDATA; | |
2037 | if (strcmp(strbuffer, "_result")) | |
2038 | return AVERROR_INVALIDDATA; | |
2039 | // Value 2/4: The callee reference number | |
2040 | if (ff_amf_read_number(&gbc, &numbuffer)) | |
2041 | return AVERROR_INVALIDDATA; | |
2042 | // Value 3/4: Null | |
2043 | if (ff_amf_read_null(&gbc)) | |
2044 | return AVERROR_INVALIDDATA; | |
2045 | // Value 4/4: The resonse as AMF_NUMBER | |
2046 | if (ff_amf_read_number(&gbc, &numbuffer)) | |
2047 | return AVERROR_INVALIDDATA; | |
2048 | else | |
2049 | *number = numbuffer; | |
2050 | ||
2051 | return 0; | |
2052 | } | |
2053 | ||
2ba45a60 DM |
2054 | static int handle_invoke_result(URLContext *s, RTMPPacket *pkt) |
2055 | { | |
2056 | RTMPContext *rt = s->priv_data; | |
2057 | char *tracked_method = NULL; | |
2058 | int ret = 0; | |
2059 | ||
2060 | if ((ret = find_tracked_method(s, pkt, 10, &tracked_method)) < 0) | |
2061 | return ret; | |
2062 | ||
2063 | if (!tracked_method) { | |
2064 | /* Ignore this reply when the current method is not tracked. */ | |
2065 | return ret; | |
2066 | } | |
2067 | ||
2068 | if (!strcmp(tracked_method, "connect")) { | |
2069 | if (!rt->is_input) { | |
2070 | if ((ret = gen_release_stream(s, rt)) < 0) | |
2071 | goto fail; | |
2072 | ||
2073 | if ((ret = gen_fcpublish_stream(s, rt)) < 0) | |
2074 | goto fail; | |
2075 | } else { | |
2076 | if ((ret = gen_server_bw(s, rt)) < 0) | |
2077 | goto fail; | |
2078 | } | |
2079 | ||
2080 | if ((ret = gen_create_stream(s, rt)) < 0) | |
2081 | goto fail; | |
2082 | ||
2083 | if (rt->is_input) { | |
2084 | /* Send the FCSubscribe command when the name of live | |
2085 | * stream is defined by the user or if it's a live stream. */ | |
2086 | if (rt->subscribe) { | |
2087 | if ((ret = gen_fcsubscribe_stream(s, rt, rt->subscribe)) < 0) | |
2088 | goto fail; | |
2089 | } else if (rt->live == -1) { | |
2090 | if ((ret = gen_fcsubscribe_stream(s, rt, rt->playpath)) < 0) | |
2091 | goto fail; | |
2092 | } | |
2093 | } | |
2094 | } else if (!strcmp(tracked_method, "createStream")) { | |
f6fa7814 DM |
2095 | double stream_id; |
2096 | if (read_number_result(pkt, &stream_id)) { | |
2ba45a60 DM |
2097 | av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n"); |
2098 | } else { | |
f6fa7814 | 2099 | rt->stream_id = stream_id; |
2ba45a60 DM |
2100 | } |
2101 | ||
2102 | if (!rt->is_input) { | |
2103 | if ((ret = gen_publish(s, rt)) < 0) | |
2104 | goto fail; | |
2105 | } else { | |
f6fa7814 DM |
2106 | if (rt->live != -1) { |
2107 | if ((ret = gen_get_stream_length(s, rt)) < 0) | |
2108 | goto fail; | |
2109 | } | |
2ba45a60 DM |
2110 | if ((ret = gen_play(s, rt)) < 0) |
2111 | goto fail; | |
2112 | if ((ret = gen_buffer_time(s, rt)) < 0) | |
2113 | goto fail; | |
2114 | } | |
f6fa7814 DM |
2115 | } else if (!strcmp(tracked_method, "getStreamLength")) { |
2116 | if (read_number_result(pkt, &rt->duration)) { | |
2117 | av_log(s, AV_LOG_WARNING, "Unexpected reply on getStreamLength()\n"); | |
2118 | } | |
2ba45a60 DM |
2119 | } |
2120 | ||
2121 | fail: | |
2122 | av_free(tracked_method); | |
2123 | return ret; | |
2124 | } | |
2125 | ||
2126 | static int handle_invoke_status(URLContext *s, RTMPPacket *pkt) | |
2127 | { | |
2128 | RTMPContext *rt = s->priv_data; | |
2129 | const uint8_t *data_end = pkt->data + pkt->size; | |
2130 | const uint8_t *ptr = pkt->data + RTMP_HEADER; | |
2131 | uint8_t tmpstr[256]; | |
2132 | int i, t; | |
2133 | ||
2134 | for (i = 0; i < 2; i++) { | |
2135 | t = ff_amf_tag_size(ptr, data_end); | |
2136 | if (t < 0) | |
2137 | return 1; | |
2138 | ptr += t; | |
2139 | } | |
2140 | ||
2141 | t = ff_amf_get_field_value(ptr, data_end, "level", tmpstr, sizeof(tmpstr)); | |
2142 | if (!t && !strcmp(tmpstr, "error")) { | |
2143 | t = ff_amf_get_field_value(ptr, data_end, | |
2144 | "description", tmpstr, sizeof(tmpstr)); | |
2145 | if (t || !tmpstr[0]) | |
2146 | t = ff_amf_get_field_value(ptr, data_end, "code", | |
2147 | tmpstr, sizeof(tmpstr)); | |
2148 | if (!t) | |
2149 | av_log(s, AV_LOG_ERROR, "Server error: %s\n", tmpstr); | |
2150 | return -1; | |
2151 | } | |
2152 | ||
2153 | t = ff_amf_get_field_value(ptr, data_end, "code", tmpstr, sizeof(tmpstr)); | |
2154 | if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING; | |
2155 | if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED; | |
2156 | if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED; | |
2157 | if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING; | |
2158 | if (!t && !strcmp(tmpstr, "NetStream.Seek.Notify")) rt->state = STATE_PLAYING; | |
2159 | ||
2160 | return 0; | |
2161 | } | |
2162 | ||
2163 | static int handle_invoke(URLContext *s, RTMPPacket *pkt) | |
2164 | { | |
2165 | RTMPContext *rt = s->priv_data; | |
2166 | int ret = 0; | |
2167 | ||
2168 | //TODO: check for the messages sent for wrong state? | |
2169 | if (ff_amf_match_string(pkt->data, pkt->size, "_error")) { | |
2170 | if ((ret = handle_invoke_error(s, pkt)) < 0) | |
2171 | return ret; | |
2172 | } else if (ff_amf_match_string(pkt->data, pkt->size, "_result")) { | |
2173 | if ((ret = handle_invoke_result(s, pkt)) < 0) | |
2174 | return ret; | |
2175 | } else if (ff_amf_match_string(pkt->data, pkt->size, "onStatus")) { | |
2176 | if ((ret = handle_invoke_status(s, pkt)) < 0) | |
2177 | return ret; | |
2178 | } else if (ff_amf_match_string(pkt->data, pkt->size, "onBWDone")) { | |
2179 | if ((ret = gen_check_bw(s, rt)) < 0) | |
2180 | return ret; | |
2181 | } else if (ff_amf_match_string(pkt->data, pkt->size, "releaseStream") || | |
2182 | ff_amf_match_string(pkt->data, pkt->size, "FCPublish") || | |
2183 | ff_amf_match_string(pkt->data, pkt->size, "publish") || | |
2184 | ff_amf_match_string(pkt->data, pkt->size, "play") || | |
2185 | ff_amf_match_string(pkt->data, pkt->size, "_checkbw") || | |
2186 | ff_amf_match_string(pkt->data, pkt->size, "createStream")) { | |
2187 | if ((ret = send_invoke_response(s, pkt)) < 0) | |
2188 | return ret; | |
2189 | } | |
2190 | ||
2191 | return ret; | |
2192 | } | |
2193 | ||
2194 | static int update_offset(RTMPContext *rt, int size) | |
2195 | { | |
2196 | int old_flv_size; | |
2197 | ||
2198 | // generate packet header and put data into buffer for FLV demuxer | |
2199 | if (rt->flv_off < rt->flv_size) { | |
2200 | // There is old unread data in the buffer, thus append at the end | |
2201 | old_flv_size = rt->flv_size; | |
2202 | rt->flv_size += size; | |
2203 | } else { | |
2204 | // All data has been read, write the new data at the start of the buffer | |
2205 | old_flv_size = 0; | |
2206 | rt->flv_size = size; | |
2207 | rt->flv_off = 0; | |
2208 | } | |
2209 | ||
2210 | return old_flv_size; | |
2211 | } | |
2212 | ||
2213 | static int append_flv_data(RTMPContext *rt, RTMPPacket *pkt, int skip) | |
2214 | { | |
2215 | int old_flv_size, ret; | |
2216 | PutByteContext pbc; | |
2217 | const uint8_t *data = pkt->data + skip; | |
2218 | const int size = pkt->size - skip; | |
2219 | uint32_t ts = pkt->timestamp; | |
2220 | ||
2221 | if (pkt->type == RTMP_PT_AUDIO) { | |
2222 | rt->has_audio = 1; | |
2223 | } else if (pkt->type == RTMP_PT_VIDEO) { | |
2224 | rt->has_video = 1; | |
2225 | } | |
2226 | ||
2227 | old_flv_size = update_offset(rt, size + 15); | |
2228 | ||
2229 | if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) { | |
2230 | rt->flv_size = rt->flv_off = 0; | |
2231 | return ret; | |
2232 | } | |
2233 | bytestream2_init_writer(&pbc, rt->flv_data, rt->flv_size); | |
2234 | bytestream2_skip_p(&pbc, old_flv_size); | |
2235 | bytestream2_put_byte(&pbc, pkt->type); | |
2236 | bytestream2_put_be24(&pbc, size); | |
2237 | bytestream2_put_be24(&pbc, ts); | |
2238 | bytestream2_put_byte(&pbc, ts >> 24); | |
2239 | bytestream2_put_be24(&pbc, 0); | |
2240 | bytestream2_put_buffer(&pbc, data, size); | |
2241 | bytestream2_put_be32(&pbc, 0); | |
2242 | ||
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | static int handle_notify(URLContext *s, RTMPPacket *pkt) | |
2247 | { | |
2248 | RTMPContext *rt = s->priv_data; | |
2249 | uint8_t commandbuffer[64]; | |
2250 | char statusmsg[128]; | |
2251 | int stringlen, ret, skip = 0; | |
2252 | GetByteContext gbc; | |
2253 | ||
2254 | bytestream2_init(&gbc, pkt->data, pkt->size); | |
2255 | if (ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer), | |
2256 | &stringlen)) | |
2257 | return AVERROR_INVALIDDATA; | |
2258 | ||
2259 | if (!strcmp(commandbuffer, "onMetaData")) { | |
2260 | // metadata properties should be stored in a mixed array | |
2261 | if (bytestream2_get_byte(&gbc) == AMF_DATA_TYPE_MIXEDARRAY) { | |
2262 | // We have found a metaData Array so flv can determine the streams | |
2263 | // from this. | |
2264 | rt->received_metadata = 1; | |
2265 | // skip 32-bit max array index | |
2266 | bytestream2_skip(&gbc, 4); | |
2267 | while (bytestream2_get_bytes_left(&gbc) > 3) { | |
2268 | if (ff_amf_get_string(&gbc, statusmsg, sizeof(statusmsg), | |
2269 | &stringlen)) | |
2270 | return AVERROR_INVALIDDATA; | |
2271 | // We do not care about the content of the property (yet). | |
2272 | stringlen = ff_amf_tag_size(gbc.buffer, gbc.buffer_end); | |
2273 | if (stringlen < 0) | |
2274 | return AVERROR_INVALIDDATA; | |
2275 | bytestream2_skip(&gbc, stringlen); | |
2276 | ||
2277 | // The presence of the following properties indicates that the | |
2278 | // respective streams are present. | |
2279 | if (!strcmp(statusmsg, "videocodecid")) { | |
2280 | rt->has_video = 1; | |
2281 | } | |
2282 | if (!strcmp(statusmsg, "audiocodecid")) { | |
2283 | rt->has_audio = 1; | |
2284 | } | |
2285 | } | |
2286 | if (bytestream2_get_be24(&gbc) != AMF_END_OF_OBJECT) | |
2287 | return AVERROR_INVALIDDATA; | |
2288 | } | |
2289 | } | |
2290 | ||
2291 | // Skip the @setDataFrame string and validate it is a notification | |
2292 | if (!strcmp(commandbuffer, "@setDataFrame")) { | |
2293 | skip = gbc.buffer - pkt->data; | |
2294 | ret = ff_amf_read_string(&gbc, statusmsg, | |
2295 | sizeof(statusmsg), &stringlen); | |
2296 | if (ret < 0) | |
2297 | return AVERROR_INVALIDDATA; | |
2298 | } | |
2299 | ||
2300 | return append_flv_data(rt, pkt, skip); | |
2301 | } | |
2302 | ||
2303 | /** | |
2304 | * Parse received packet and possibly perform some action depending on | |
2305 | * the packet contents. | |
2306 | * @return 0 for no errors, negative values for serious errors which prevent | |
2307 | * further communications, positive values for uncritical errors | |
2308 | */ | |
2309 | static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt) | |
2310 | { | |
2311 | int ret; | |
2312 | ||
2313 | #ifdef DEBUG | |
2314 | ff_rtmp_packet_dump(s, pkt); | |
2315 | #endif | |
2316 | ||
2317 | switch (pkt->type) { | |
2318 | case RTMP_PT_BYTES_READ: | |
2319 | av_dlog(s, "received bytes read report\n"); | |
2320 | break; | |
2321 | case RTMP_PT_CHUNK_SIZE: | |
2322 | if ((ret = handle_chunk_size(s, pkt)) < 0) | |
2323 | return ret; | |
2324 | break; | |
2325 | case RTMP_PT_PING: | |
2326 | if ((ret = handle_ping(s, pkt)) < 0) | |
2327 | return ret; | |
2328 | break; | |
2329 | case RTMP_PT_CLIENT_BW: | |
2330 | if ((ret = handle_client_bw(s, pkt)) < 0) | |
2331 | return ret; | |
2332 | break; | |
2333 | case RTMP_PT_SERVER_BW: | |
2334 | if ((ret = handle_server_bw(s, pkt)) < 0) | |
2335 | return ret; | |
2336 | break; | |
2337 | case RTMP_PT_INVOKE: | |
2338 | if ((ret = handle_invoke(s, pkt)) < 0) | |
2339 | return ret; | |
2340 | break; | |
2341 | case RTMP_PT_VIDEO: | |
2342 | case RTMP_PT_AUDIO: | |
2343 | case RTMP_PT_METADATA: | |
2344 | case RTMP_PT_NOTIFY: | |
2345 | /* Audio, Video and Metadata packets are parsed in get_packet() */ | |
2346 | break; | |
2347 | default: | |
2348 | av_log(s, AV_LOG_VERBOSE, "Unknown packet type received 0x%02X\n", pkt->type); | |
2349 | break; | |
2350 | } | |
2351 | return 0; | |
2352 | } | |
2353 | ||
2354 | static int handle_metadata(RTMPContext *rt, RTMPPacket *pkt) | |
2355 | { | |
2356 | int ret, old_flv_size, type; | |
2357 | const uint8_t *next; | |
2358 | uint8_t *p; | |
2359 | uint32_t size; | |
2360 | uint32_t ts, cts, pts = 0; | |
2361 | ||
2362 | old_flv_size = update_offset(rt, pkt->size); | |
2363 | ||
2364 | if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) { | |
2365 | rt->flv_size = rt->flv_off = 0; | |
2366 | return ret; | |
2367 | } | |
2368 | ||
2369 | next = pkt->data; | |
2370 | p = rt->flv_data + old_flv_size; | |
2371 | ||
2372 | /* copy data while rewriting timestamps */ | |
2373 | ts = pkt->timestamp; | |
2374 | ||
2375 | while (next - pkt->data < pkt->size - RTMP_HEADER) { | |
2376 | type = bytestream_get_byte(&next); | |
2377 | size = bytestream_get_be24(&next); | |
2378 | cts = bytestream_get_be24(&next); | |
2379 | cts |= bytestream_get_byte(&next) << 24; | |
2380 | if (!pts) | |
2381 | pts = cts; | |
2382 | ts += cts - pts; | |
2383 | pts = cts; | |
2384 | if (size + 3 + 4 > pkt->data + pkt->size - next) | |
2385 | break; | |
2386 | bytestream_put_byte(&p, type); | |
2387 | bytestream_put_be24(&p, size); | |
2388 | bytestream_put_be24(&p, ts); | |
2389 | bytestream_put_byte(&p, ts >> 24); | |
2390 | memcpy(p, next, size + 3 + 4); | |
2391 | next += size + 3 + 4; | |
2392 | p += size + 3 + 4; | |
2393 | } | |
2394 | if (p != rt->flv_data + rt->flv_size) { | |
2395 | av_log(NULL, AV_LOG_WARNING, "Incomplete flv packets in " | |
2396 | "RTMP_PT_METADATA packet\n"); | |
2397 | rt->flv_size = p - rt->flv_data; | |
2398 | } | |
2399 | ||
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | /** | |
2404 | * Interact with the server by receiving and sending RTMP packets until | |
2405 | * there is some significant data (media data or expected status notification). | |
2406 | * | |
2407 | * @param s reading context | |
2408 | * @param for_header non-zero value tells function to work until it | |
2409 | * gets notification from the server that playing has been started, | |
2410 | * otherwise function will work until some media data is received (or | |
2411 | * an error happens) | |
2412 | * @return 0 for successful operation, negative value in case of error | |
2413 | */ | |
2414 | static int get_packet(URLContext *s, int for_header) | |
2415 | { | |
2416 | RTMPContext *rt = s->priv_data; | |
2417 | int ret; | |
2418 | ||
2419 | if (rt->state == STATE_STOPPED) | |
2420 | return AVERROR_EOF; | |
2421 | ||
2422 | for (;;) { | |
2423 | RTMPPacket rpkt = { 0 }; | |
2424 | if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt, | |
2425 | rt->in_chunk_size, &rt->prev_pkt[0], | |
2426 | &rt->nb_prev_pkt[0])) <= 0) { | |
2427 | if (ret == 0) { | |
2428 | return AVERROR(EAGAIN); | |
2429 | } else { | |
2430 | return AVERROR(EIO); | |
2431 | } | |
2432 | } | |
f6fa7814 DM |
2433 | |
2434 | // Track timestamp for later use | |
2435 | rt->last_timestamp = rpkt.timestamp; | |
2436 | ||
2ba45a60 DM |
2437 | rt->bytes_read += ret; |
2438 | if (rt->bytes_read - rt->last_bytes_read > rt->client_report_size) { | |
2439 | av_log(s, AV_LOG_DEBUG, "Sending bytes read report\n"); | |
2440 | if ((ret = gen_bytes_read(s, rt, rpkt.timestamp + 1)) < 0) | |
2441 | return ret; | |
2442 | rt->last_bytes_read = rt->bytes_read; | |
2443 | } | |
2444 | ||
2445 | ret = rtmp_parse_result(s, rt, &rpkt); | |
2446 | ||
2447 | // At this point we must check if we are in the seek state and continue | |
2448 | // with the next packet. handle_invoke will get us out of this state | |
2449 | // when the right message is encountered | |
2450 | if (rt->state == STATE_SEEKING) { | |
2451 | ff_rtmp_packet_destroy(&rpkt); | |
2452 | // We continue, let the natural flow of things happen: | |
2453 | // AVERROR(EAGAIN) or handle_invoke gets us out of here | |
2454 | continue; | |
2455 | } | |
2456 | ||
2457 | if (ret < 0) {//serious error in current packet | |
2458 | ff_rtmp_packet_destroy(&rpkt); | |
2459 | return ret; | |
2460 | } | |
2461 | if (rt->do_reconnect && for_header) { | |
2462 | ff_rtmp_packet_destroy(&rpkt); | |
2463 | return 0; | |
2464 | } | |
2465 | if (rt->state == STATE_STOPPED) { | |
2466 | ff_rtmp_packet_destroy(&rpkt); | |
2467 | return AVERROR_EOF; | |
2468 | } | |
2469 | if (for_header && (rt->state == STATE_PLAYING || | |
2470 | rt->state == STATE_PUBLISHING || | |
2471 | rt->state == STATE_SENDING || | |
2472 | rt->state == STATE_RECEIVING)) { | |
2473 | ff_rtmp_packet_destroy(&rpkt); | |
2474 | return 0; | |
2475 | } | |
2476 | if (!rpkt.size || !rt->is_input) { | |
2477 | ff_rtmp_packet_destroy(&rpkt); | |
2478 | continue; | |
2479 | } | |
2480 | if (rpkt.type == RTMP_PT_VIDEO || rpkt.type == RTMP_PT_AUDIO) { | |
2481 | ret = append_flv_data(rt, &rpkt, 0); | |
2482 | ff_rtmp_packet_destroy(&rpkt); | |
2483 | return ret; | |
2484 | } else if (rpkt.type == RTMP_PT_NOTIFY) { | |
2485 | ret = handle_notify(s, &rpkt); | |
2486 | ff_rtmp_packet_destroy(&rpkt); | |
2487 | return ret; | |
2488 | } else if (rpkt.type == RTMP_PT_METADATA) { | |
2489 | ret = handle_metadata(rt, &rpkt); | |
2490 | ff_rtmp_packet_destroy(&rpkt); | |
2491 | return 0; | |
2492 | } | |
2493 | ff_rtmp_packet_destroy(&rpkt); | |
2494 | } | |
2495 | } | |
2496 | ||
2497 | static int rtmp_close(URLContext *h) | |
2498 | { | |
2499 | RTMPContext *rt = h->priv_data; | |
2500 | int ret = 0, i, j; | |
2501 | ||
2502 | if (!rt->is_input) { | |
2503 | rt->flv_data = NULL; | |
2504 | if (rt->out_pkt.size) | |
2505 | ff_rtmp_packet_destroy(&rt->out_pkt); | |
2506 | if (rt->state > STATE_FCPUBLISH) | |
2507 | ret = gen_fcunpublish_stream(h, rt); | |
2508 | } | |
2509 | if (rt->state > STATE_HANDSHAKED) | |
2510 | ret = gen_delete_stream(h, rt); | |
2511 | for (i = 0; i < 2; i++) { | |
2512 | for (j = 0; j < rt->nb_prev_pkt[i]; j++) | |
2513 | ff_rtmp_packet_destroy(&rt->prev_pkt[i][j]); | |
2514 | av_freep(&rt->prev_pkt[i]); | |
2515 | } | |
2516 | ||
2517 | free_tracked_methods(rt); | |
2518 | av_freep(&rt->flv_data); | |
2519 | ffurl_close(rt->stream); | |
2520 | return ret; | |
2521 | } | |
2522 | ||
f6fa7814 DM |
2523 | /** |
2524 | * Insert a fake onMetadata packet into the FLV stream to notify the FLV | |
2525 | * demuxer about the duration of the stream. | |
2526 | * | |
2527 | * This should only be done if there was no real onMetadata packet sent by the | |
2528 | * server at the start of the stream and if we were able to retrieve a valid | |
2529 | * duration via a getStreamLength call. | |
2530 | * | |
2531 | * @return 0 for successful operation, negative value in case of error | |
2532 | */ | |
2533 | static int inject_fake_duration_metadata(RTMPContext *rt) | |
2534 | { | |
2535 | // We need to insert the metdata packet directly after the FLV | |
2536 | // header, i.e. we need to move all other already read data by the | |
2537 | // size of our fake metadata packet. | |
2538 | ||
2539 | uint8_t* p; | |
2540 | // Keep old flv_data pointer | |
2541 | uint8_t* old_flv_data = rt->flv_data; | |
2542 | // Allocate a new flv_data pointer with enough space for the additional package | |
2543 | if (!(rt->flv_data = av_malloc(rt->flv_size + 55))) { | |
2544 | rt->flv_data = old_flv_data; | |
2545 | return AVERROR(ENOMEM); | |
2546 | } | |
2547 | ||
2548 | // Copy FLV header | |
2549 | memcpy(rt->flv_data, old_flv_data, 13); | |
2550 | // Copy remaining packets | |
2551 | memcpy(rt->flv_data + 13 + 55, old_flv_data + 13, rt->flv_size - 13); | |
2552 | // Increase the size by the injected packet | |
2553 | rt->flv_size += 55; | |
2554 | // Delete the old FLV data | |
2555 | av_free(old_flv_data); | |
2556 | ||
2557 | p = rt->flv_data + 13; | |
2558 | bytestream_put_byte(&p, FLV_TAG_TYPE_META); | |
2559 | bytestream_put_be24(&p, 40); // size of data part (sum of all parts below) | |
2560 | bytestream_put_be24(&p, 0); // timestamp | |
2561 | bytestream_put_be32(&p, 0); // reserved | |
2562 | ||
2563 | // first event name as a string | |
2564 | bytestream_put_byte(&p, AMF_DATA_TYPE_STRING); | |
2565 | // "onMetaData" as AMF string | |
2566 | bytestream_put_be16(&p, 10); | |
2567 | bytestream_put_buffer(&p, "onMetaData", 10); | |
2568 | ||
2569 | // mixed array (hash) with size and string/type/data tuples | |
2570 | bytestream_put_byte(&p, AMF_DATA_TYPE_MIXEDARRAY); | |
2571 | bytestream_put_be32(&p, 1); // metadata_count | |
2572 | ||
2573 | // "duration" as AMF string | |
2574 | bytestream_put_be16(&p, 8); | |
2575 | bytestream_put_buffer(&p, "duration", 8); | |
2576 | bytestream_put_byte(&p, AMF_DATA_TYPE_NUMBER); | |
2577 | bytestream_put_be64(&p, av_double2int(rt->duration)); | |
2578 | ||
2579 | // Finalise object | |
2580 | bytestream_put_be16(&p, 0); // Empty string | |
2581 | bytestream_put_byte(&p, AMF_END_OF_OBJECT); | |
2582 | bytestream_put_be32(&p, 40); // size of data part (sum of all parts below) | |
2583 | ||
2584 | return 0; | |
2585 | } | |
2586 | ||
2ba45a60 DM |
2587 | /** |
2588 | * Open RTMP connection and verify that the stream can be played. | |
2589 | * | |
2590 | * URL syntax: rtmp://server[:port][/app][/playpath] | |
2591 | * where 'app' is first one or two directories in the path | |
2592 | * (e.g. /ondemand/, /flash/live/, etc.) | |
2593 | * and 'playpath' is a file name (the rest of the path, | |
2594 | * may be prefixed with "mp4:") | |
2595 | */ | |
2596 | static int rtmp_open(URLContext *s, const char *uri, int flags) | |
2597 | { | |
2598 | RTMPContext *rt = s->priv_data; | |
2599 | char proto[8], hostname[256], path[1024], auth[100], *fname; | |
f6fa7814 | 2600 | char *old_app, *qmark, *n, fname_buffer[1024]; |
2ba45a60 DM |
2601 | uint8_t buf[2048]; |
2602 | int port; | |
2603 | AVDictionary *opts = NULL; | |
2604 | int ret; | |
2605 | ||
2606 | if (rt->listen_timeout > 0) | |
2607 | rt->listen = 1; | |
2608 | ||
2609 | rt->is_input = !(flags & AVIO_FLAG_WRITE); | |
2610 | ||
2611 | av_url_split(proto, sizeof(proto), auth, sizeof(auth), | |
2612 | hostname, sizeof(hostname), &port, | |
2613 | path, sizeof(path), s->filename); | |
2614 | ||
f6fa7814 DM |
2615 | n = strchr(path, ' '); |
2616 | if (n) { | |
2ba45a60 DM |
2617 | av_log(s, AV_LOG_WARNING, |
2618 | "Detected librtmp style URL parameters, these aren't supported " | |
2619 | "by the libavformat internal RTMP handler currently enabled. " | |
2620 | "See the documentation for the correct way to pass parameters.\n"); | |
f6fa7814 | 2621 | *n = '\0'; // Trim not supported part |
2ba45a60 DM |
2622 | } |
2623 | ||
2624 | if (auth[0]) { | |
2625 | char *ptr = strchr(auth, ':'); | |
2626 | if (ptr) { | |
2627 | *ptr = '\0'; | |
2628 | av_strlcpy(rt->username, auth, sizeof(rt->username)); | |
2629 | av_strlcpy(rt->password, ptr + 1, sizeof(rt->password)); | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | if (rt->listen && strcmp(proto, "rtmp")) { | |
2634 | av_log(s, AV_LOG_ERROR, "rtmp_listen not available for %s\n", | |
2635 | proto); | |
2636 | return AVERROR(EINVAL); | |
2637 | } | |
2638 | if (!strcmp(proto, "rtmpt") || !strcmp(proto, "rtmpts")) { | |
2639 | if (!strcmp(proto, "rtmpts")) | |
2640 | av_dict_set(&opts, "ffrtmphttp_tls", "1", 1); | |
2641 | ||
2642 | /* open the http tunneling connection */ | |
2643 | ff_url_join(buf, sizeof(buf), "ffrtmphttp", NULL, hostname, port, NULL); | |
2644 | } else if (!strcmp(proto, "rtmps")) { | |
2645 | /* open the tls connection */ | |
2646 | if (port < 0) | |
2647 | port = RTMPS_DEFAULT_PORT; | |
2648 | ff_url_join(buf, sizeof(buf), "tls", NULL, hostname, port, NULL); | |
2649 | } else if (!strcmp(proto, "rtmpe") || (!strcmp(proto, "rtmpte"))) { | |
2650 | if (!strcmp(proto, "rtmpte")) | |
2651 | av_dict_set(&opts, "ffrtmpcrypt_tunneling", "1", 1); | |
2652 | ||
2653 | /* open the encrypted connection */ | |
2654 | ff_url_join(buf, sizeof(buf), "ffrtmpcrypt", NULL, hostname, port, NULL); | |
2655 | rt->encrypted = 1; | |
2656 | } else { | |
2657 | /* open the tcp connection */ | |
2658 | if (port < 0) | |
2659 | port = RTMP_DEFAULT_PORT; | |
2660 | if (rt->listen) | |
2661 | ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, | |
2662 | "?listen&listen_timeout=%d", | |
2663 | rt->listen_timeout * 1000); | |
2664 | else | |
2665 | ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL); | |
2666 | } | |
2667 | ||
2668 | reconnect: | |
2669 | if ((ret = ffurl_open(&rt->stream, buf, AVIO_FLAG_READ_WRITE, | |
2670 | &s->interrupt_callback, &opts)) < 0) { | |
2671 | av_log(s , AV_LOG_ERROR, "Cannot open connection %s\n", buf); | |
2672 | goto fail; | |
2673 | } | |
2674 | ||
2675 | if (rt->swfverify) { | |
2676 | if ((ret = rtmp_calc_swfhash(s)) < 0) | |
2677 | goto fail; | |
2678 | } | |
2679 | ||
2680 | rt->state = STATE_START; | |
2681 | if (!rt->listen && (ret = rtmp_handshake(s, rt)) < 0) | |
2682 | goto fail; | |
2683 | if (rt->listen && (ret = rtmp_server_handshake(s, rt)) < 0) | |
2684 | goto fail; | |
2685 | ||
2686 | rt->out_chunk_size = 128; | |
2687 | rt->in_chunk_size = 128; // Probably overwritten later | |
2688 | rt->state = STATE_HANDSHAKED; | |
2689 | ||
2690 | // Keep the application name when it has been defined by the user. | |
2691 | old_app = rt->app; | |
2692 | ||
2693 | rt->app = av_malloc(APP_MAX_LENGTH); | |
2694 | if (!rt->app) { | |
2695 | ret = AVERROR(ENOMEM); | |
2696 | goto fail; | |
2697 | } | |
2698 | ||
2699 | //extract "app" part from path | |
2700 | qmark = strchr(path, '?'); | |
2701 | if (qmark && strstr(qmark, "slist=")) { | |
2702 | char* amp; | |
2703 | // After slist we have the playpath, before the params, the app | |
2704 | av_strlcpy(rt->app, path + 1, FFMIN(qmark - path, APP_MAX_LENGTH)); | |
2705 | fname = strstr(path, "slist=") + 6; | |
2706 | // Strip any further query parameters from fname | |
2707 | amp = strchr(fname, '&'); | |
2708 | if (amp) { | |
2709 | av_strlcpy(fname_buffer, fname, FFMIN(amp - fname + 1, | |
2710 | sizeof(fname_buffer))); | |
2711 | fname = fname_buffer; | |
2712 | } | |
2713 | } else if (!strncmp(path, "/ondemand/", 10)) { | |
2714 | fname = path + 10; | |
2715 | memcpy(rt->app, "ondemand", 9); | |
2716 | } else { | |
2717 | char *next = *path ? path + 1 : path; | |
2718 | char *p = strchr(next, '/'); | |
2719 | if (!p) { | |
f6fa7814 DM |
2720 | if (old_app) { |
2721 | // If name of application has been defined by the user, assume that | |
2722 | // playpath is provided in the URL | |
2723 | fname = next; | |
2724 | } else { | |
2725 | fname = NULL; | |
2726 | av_strlcpy(rt->app, next, APP_MAX_LENGTH); | |
2727 | } | |
2ba45a60 DM |
2728 | } else { |
2729 | // make sure we do not mismatch a playpath for an application instance | |
2730 | char *c = strchr(p + 1, ':'); | |
2731 | fname = strchr(p + 1, '/'); | |
2732 | if (!fname || (c && c < fname)) { | |
2733 | fname = p + 1; | |
2734 | av_strlcpy(rt->app, path + 1, FFMIN(p - path, APP_MAX_LENGTH)); | |
2735 | } else { | |
2736 | fname++; | |
2737 | av_strlcpy(rt->app, path + 1, FFMIN(fname - path - 1, APP_MAX_LENGTH)); | |
2738 | } | |
2739 | } | |
2740 | } | |
2741 | ||
2742 | if (old_app) { | |
2743 | // The name of application has been defined by the user, override it. | |
2744 | if (strlen(old_app) >= APP_MAX_LENGTH) { | |
2745 | ret = AVERROR(EINVAL); | |
2746 | goto fail; | |
2747 | } | |
2748 | av_free(rt->app); | |
2749 | rt->app = old_app; | |
2750 | } | |
2751 | ||
2752 | if (!rt->playpath) { | |
2ba45a60 DM |
2753 | rt->playpath = av_malloc(PLAYPATH_MAX_LENGTH); |
2754 | if (!rt->playpath) { | |
2755 | ret = AVERROR(ENOMEM); | |
2756 | goto fail; | |
2757 | } | |
2758 | ||
f6fa7814 DM |
2759 | if (fname) { |
2760 | int len = strlen(fname); | |
2761 | if (!strchr(fname, ':') && len >= 4 && | |
2762 | (!strcmp(fname + len - 4, ".f4v") || | |
2763 | !strcmp(fname + len - 4, ".mp4"))) { | |
2764 | memcpy(rt->playpath, "mp4:", 5); | |
2765 | } else { | |
2766 | if (len >= 4 && !strcmp(fname + len - 4, ".flv")) | |
2767 | fname[len - 4] = '\0'; | |
2768 | rt->playpath[0] = 0; | |
2769 | } | |
2770 | av_strlcat(rt->playpath, fname, PLAYPATH_MAX_LENGTH); | |
2ba45a60 | 2771 | } else { |
f6fa7814 | 2772 | rt->playpath[0] = '\0'; |
2ba45a60 | 2773 | } |
2ba45a60 DM |
2774 | } |
2775 | ||
2776 | if (!rt->tcurl) { | |
2777 | rt->tcurl = av_malloc(TCURL_MAX_LENGTH); | |
2778 | if (!rt->tcurl) { | |
2779 | ret = AVERROR(ENOMEM); | |
2780 | goto fail; | |
2781 | } | |
2782 | ff_url_join(rt->tcurl, TCURL_MAX_LENGTH, proto, NULL, hostname, | |
2783 | port, "/%s", rt->app); | |
2784 | } | |
2785 | ||
2786 | if (!rt->flashver) { | |
2787 | rt->flashver = av_malloc(FLASHVER_MAX_LENGTH); | |
2788 | if (!rt->flashver) { | |
2789 | ret = AVERROR(ENOMEM); | |
2790 | goto fail; | |
2791 | } | |
2792 | if (rt->is_input) { | |
2793 | snprintf(rt->flashver, FLASHVER_MAX_LENGTH, "%s %d,%d,%d,%d", | |
2794 | RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1, RTMP_CLIENT_VER2, | |
2795 | RTMP_CLIENT_VER3, RTMP_CLIENT_VER4); | |
2796 | } else { | |
2797 | snprintf(rt->flashver, FLASHVER_MAX_LENGTH, | |
2798 | "FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT); | |
2799 | } | |
2800 | } | |
2801 | ||
2802 | rt->client_report_size = 1048576; | |
2803 | rt->bytes_read = 0; | |
2804 | rt->has_audio = 0; | |
2805 | rt->has_video = 0; | |
2806 | rt->received_metadata = 0; | |
2807 | rt->last_bytes_read = 0; | |
2808 | rt->server_bw = 2500000; | |
f6fa7814 | 2809 | rt->duration = 0; |
2ba45a60 DM |
2810 | |
2811 | av_log(s, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n", | |
2812 | proto, path, rt->app, rt->playpath); | |
2813 | if (!rt->listen) { | |
2814 | if ((ret = gen_connect(s, rt)) < 0) | |
2815 | goto fail; | |
2816 | } else { | |
2817 | if ((ret = read_connect(s, s->priv_data)) < 0) | |
2818 | goto fail; | |
2819 | } | |
2820 | ||
2821 | do { | |
2822 | ret = get_packet(s, 1); | |
2823 | } while (ret == AVERROR(EAGAIN)); | |
2824 | if (ret < 0) | |
2825 | goto fail; | |
2826 | ||
2827 | if (rt->do_reconnect) { | |
2828 | int i; | |
2829 | ffurl_close(rt->stream); | |
2830 | rt->stream = NULL; | |
2831 | rt->do_reconnect = 0; | |
2832 | rt->nb_invokes = 0; | |
2833 | for (i = 0; i < 2; i++) | |
2834 | memset(rt->prev_pkt[i], 0, | |
2835 | sizeof(**rt->prev_pkt) * rt->nb_prev_pkt[i]); | |
2836 | free_tracked_methods(rt); | |
2837 | goto reconnect; | |
2838 | } | |
2839 | ||
2840 | if (rt->is_input) { | |
2ba45a60 DM |
2841 | // generate FLV header for demuxer |
2842 | rt->flv_size = 13; | |
f6fa7814 DM |
2843 | if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) |
2844 | goto fail; | |
2ba45a60 DM |
2845 | rt->flv_off = 0; |
2846 | memcpy(rt->flv_data, "FLV\1\0\0\0\0\011\0\0\0\0", rt->flv_size); | |
2847 | ||
2848 | // Read packets until we reach the first A/V packet or read metadata. | |
2849 | // If there was a metadata package in front of the A/V packets, we can | |
2850 | // build the FLV header from this. If we do not receive any metadata, | |
2851 | // the FLV decoder will allocate the needed streams when their first | |
2852 | // audio or video packet arrives. | |
2853 | while (!rt->has_audio && !rt->has_video && !rt->received_metadata) { | |
2854 | if ((ret = get_packet(s, 0)) < 0) | |
f6fa7814 | 2855 | goto fail; |
2ba45a60 DM |
2856 | } |
2857 | ||
2858 | // Either after we have read the metadata or (if there is none) the | |
2859 | // first packet of an A/V stream, we have a better knowledge about the | |
2860 | // streams, so set the FLV header accordingly. | |
2861 | if (rt->has_audio) { | |
2862 | rt->flv_data[4] |= FLV_HEADER_FLAG_HASAUDIO; | |
2863 | } | |
2864 | if (rt->has_video) { | |
2865 | rt->flv_data[4] |= FLV_HEADER_FLAG_HASVIDEO; | |
2866 | } | |
f6fa7814 DM |
2867 | |
2868 | // If we received the first packet of an A/V stream and no metadata but | |
2869 | // the server returned a valid duration, create a fake metadata packet | |
2870 | // to inform the FLV decoder about the duration. | |
2871 | if (!rt->received_metadata && rt->duration > 0) { | |
2872 | if ((ret = inject_fake_duration_metadata(rt)) < 0) | |
2873 | goto fail; | |
2874 | } | |
2ba45a60 DM |
2875 | } else { |
2876 | rt->flv_size = 0; | |
2877 | rt->flv_data = NULL; | |
2878 | rt->flv_off = 0; | |
2879 | rt->skip_bytes = 13; | |
2880 | } | |
2881 | ||
2882 | s->max_packet_size = rt->stream->max_packet_size; | |
2883 | s->is_streamed = 1; | |
2884 | return 0; | |
2885 | ||
2886 | fail: | |
2887 | av_dict_free(&opts); | |
2888 | rtmp_close(s); | |
2889 | return ret; | |
2890 | } | |
2891 | ||
2892 | static int rtmp_read(URLContext *s, uint8_t *buf, int size) | |
2893 | { | |
2894 | RTMPContext *rt = s->priv_data; | |
2895 | int orig_size = size; | |
2896 | int ret; | |
2897 | ||
2898 | while (size > 0) { | |
2899 | int data_left = rt->flv_size - rt->flv_off; | |
2900 | ||
2901 | if (data_left >= size) { | |
2902 | memcpy(buf, rt->flv_data + rt->flv_off, size); | |
2903 | rt->flv_off += size; | |
2904 | return orig_size; | |
2905 | } | |
2906 | if (data_left > 0) { | |
2907 | memcpy(buf, rt->flv_data + rt->flv_off, data_left); | |
2908 | buf += data_left; | |
2909 | size -= data_left; | |
2910 | rt->flv_off = rt->flv_size; | |
2911 | return data_left; | |
2912 | } | |
2913 | if ((ret = get_packet(s, 0)) < 0) | |
2914 | return ret; | |
2915 | } | |
2916 | return orig_size; | |
2917 | } | |
2918 | ||
2919 | static int64_t rtmp_seek(URLContext *s, int stream_index, int64_t timestamp, | |
2920 | int flags) | |
2921 | { | |
2922 | RTMPContext *rt = s->priv_data; | |
2923 | int ret; | |
2924 | av_log(s, AV_LOG_DEBUG, | |
2925 | "Seek on stream index %d at timestamp %"PRId64" with flags %08x\n", | |
2926 | stream_index, timestamp, flags); | |
2927 | if ((ret = gen_seek(s, rt, timestamp)) < 0) { | |
2928 | av_log(s, AV_LOG_ERROR, | |
2929 | "Unable to send seek command on stream index %d at timestamp " | |
2930 | "%"PRId64" with flags %08x\n", | |
2931 | stream_index, timestamp, flags); | |
2932 | return ret; | |
2933 | } | |
2934 | rt->flv_off = rt->flv_size; | |
2935 | rt->state = STATE_SEEKING; | |
2936 | return timestamp; | |
2937 | } | |
2938 | ||
f6fa7814 DM |
2939 | static int rtmp_pause(URLContext *s, int pause) |
2940 | { | |
2941 | RTMPContext *rt = s->priv_data; | |
2942 | int ret; | |
2943 | av_log(s, AV_LOG_DEBUG, "Pause at timestamp %d\n", | |
2944 | rt->last_timestamp); | |
2945 | if ((ret = gen_pause(s, rt, pause, rt->last_timestamp)) < 0) { | |
2946 | av_log(s, AV_LOG_ERROR, "Unable to send pause command at timestamp %d\n", | |
2947 | rt->last_timestamp); | |
2948 | return ret; | |
2949 | } | |
2950 | return 0; | |
2951 | } | |
2952 | ||
2ba45a60 DM |
2953 | static int rtmp_write(URLContext *s, const uint8_t *buf, int size) |
2954 | { | |
2955 | RTMPContext *rt = s->priv_data; | |
2956 | int size_temp = size; | |
f6fa7814 | 2957 | int pktsize, pkttype, copy; |
2ba45a60 DM |
2958 | uint32_t ts; |
2959 | const uint8_t *buf_temp = buf; | |
2960 | uint8_t c; | |
2961 | int ret; | |
2962 | ||
2963 | do { | |
2964 | if (rt->skip_bytes) { | |
2965 | int skip = FFMIN(rt->skip_bytes, size_temp); | |
2966 | buf_temp += skip; | |
2967 | size_temp -= skip; | |
2968 | rt->skip_bytes -= skip; | |
2969 | continue; | |
2970 | } | |
2971 | ||
2972 | if (rt->flv_header_bytes < RTMP_HEADER) { | |
2973 | const uint8_t *header = rt->flv_header; | |
2ba45a60 | 2974 | int channel = RTMP_AUDIO_CHANNEL; |
f6fa7814 DM |
2975 | |
2976 | copy = FFMIN(RTMP_HEADER - rt->flv_header_bytes, size_temp); | |
2ba45a60 DM |
2977 | bytestream_get_buffer(&buf_temp, rt->flv_header + rt->flv_header_bytes, copy); |
2978 | rt->flv_header_bytes += copy; | |
2979 | size_temp -= copy; | |
2980 | if (rt->flv_header_bytes < RTMP_HEADER) | |
2981 | break; | |
2982 | ||
2983 | pkttype = bytestream_get_byte(&header); | |
2984 | pktsize = bytestream_get_be24(&header); | |
2985 | ts = bytestream_get_be24(&header); | |
2986 | ts |= bytestream_get_byte(&header) << 24; | |
2987 | bytestream_get_be24(&header); | |
2988 | rt->flv_size = pktsize; | |
2989 | ||
2990 | if (pkttype == RTMP_PT_VIDEO) | |
2991 | channel = RTMP_VIDEO_CHANNEL; | |
2992 | ||
2ba45a60 DM |
2993 | if (((pkttype == RTMP_PT_VIDEO || pkttype == RTMP_PT_AUDIO) && ts == 0) || |
2994 | pkttype == RTMP_PT_NOTIFY) { | |
2ba45a60 DM |
2995 | if ((ret = ff_rtmp_check_alloc_array(&rt->prev_pkt[1], |
2996 | &rt->nb_prev_pkt[1], | |
2997 | channel)) < 0) | |
2998 | return ret; | |
f6fa7814 DM |
2999 | // Force sending a full 12 bytes header by clearing the |
3000 | // channel id, to make it not match a potential earlier | |
3001 | // packet in the same channel. | |
2ba45a60 DM |
3002 | rt->prev_pkt[1][channel].channel_id = 0; |
3003 | } | |
3004 | ||
3005 | //this can be a big packet, it's better to send it right here | |
3006 | if ((ret = ff_rtmp_packet_create(&rt->out_pkt, channel, | |
3007 | pkttype, ts, pktsize)) < 0) | |
3008 | return ret; | |
3009 | ||
3010 | rt->out_pkt.extra = rt->stream_id; | |
3011 | rt->flv_data = rt->out_pkt.data; | |
2ba45a60 DM |
3012 | } |
3013 | ||
f6fa7814 DM |
3014 | copy = FFMIN(rt->flv_size - rt->flv_off, size_temp); |
3015 | bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, copy); | |
3016 | rt->flv_off += copy; | |
3017 | size_temp -= copy; | |
2ba45a60 DM |
3018 | |
3019 | if (rt->flv_off == rt->flv_size) { | |
3020 | rt->skip_bytes = 4; | |
3021 | ||
f6fa7814 DM |
3022 | if (rt->out_pkt.type == RTMP_PT_NOTIFY) { |
3023 | // For onMetaData and |RtmpSampleAccess packets, we want | |
3024 | // @setDataFrame prepended to the packet before it gets sent. | |
3025 | // However, not all RTMP_PT_NOTIFY packets (e.g., onTextData | |
3026 | // and onCuePoint). | |
3027 | uint8_t commandbuffer[64]; | |
3028 | int stringlen = 0; | |
3029 | GetByteContext gbc; | |
3030 | ||
3031 | bytestream2_init(&gbc, rt->flv_data, rt->flv_size); | |
3032 | if (!ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer), | |
3033 | &stringlen)) { | |
3034 | if (!strcmp(commandbuffer, "onMetaData") || | |
3035 | !strcmp(commandbuffer, "|RtmpSampleAccess")) { | |
3036 | uint8_t *ptr; | |
3037 | if ((ret = av_reallocp(&rt->out_pkt.data, rt->out_pkt.size + 16)) < 0) { | |
3038 | rt->flv_size = rt->flv_off = rt->flv_header_bytes = 0; | |
3039 | return ret; | |
3040 | } | |
3041 | memmove(rt->out_pkt.data + 16, rt->out_pkt.data, rt->out_pkt.size); | |
3042 | rt->out_pkt.size += 16; | |
3043 | ptr = rt->out_pkt.data; | |
3044 | ff_amf_write_string(&ptr, "@setDataFrame"); | |
3045 | } | |
3046 | } | |
3047 | } | |
3048 | ||
2ba45a60 DM |
3049 | if ((ret = rtmp_send_packet(rt, &rt->out_pkt, 0)) < 0) |
3050 | return ret; | |
3051 | rt->flv_size = 0; | |
3052 | rt->flv_off = 0; | |
3053 | rt->flv_header_bytes = 0; | |
3054 | rt->flv_nb_packets++; | |
3055 | } | |
3056 | } while (buf_temp - buf < size); | |
3057 | ||
3058 | if (rt->flv_nb_packets < rt->flush_interval) | |
3059 | return size; | |
3060 | rt->flv_nb_packets = 0; | |
3061 | ||
3062 | /* set stream into nonblocking mode */ | |
3063 | rt->stream->flags |= AVIO_FLAG_NONBLOCK; | |
3064 | ||
3065 | /* try to read one byte from the stream */ | |
3066 | ret = ffurl_read(rt->stream, &c, 1); | |
3067 | ||
3068 | /* switch the stream back into blocking mode */ | |
3069 | rt->stream->flags &= ~AVIO_FLAG_NONBLOCK; | |
3070 | ||
3071 | if (ret == AVERROR(EAGAIN)) { | |
3072 | /* no incoming data to handle */ | |
3073 | return size; | |
3074 | } else if (ret < 0) { | |
3075 | return ret; | |
3076 | } else if (ret == 1) { | |
3077 | RTMPPacket rpkt = { 0 }; | |
3078 | ||
3079 | if ((ret = ff_rtmp_packet_read_internal(rt->stream, &rpkt, | |
3080 | rt->in_chunk_size, | |
3081 | &rt->prev_pkt[0], | |
3082 | &rt->nb_prev_pkt[0], c)) <= 0) | |
3083 | return ret; | |
3084 | ||
3085 | if ((ret = rtmp_parse_result(s, rt, &rpkt)) < 0) | |
3086 | return ret; | |
3087 | ||
3088 | ff_rtmp_packet_destroy(&rpkt); | |
3089 | } | |
3090 | ||
3091 | return size; | |
3092 | } | |
3093 | ||
3094 | #define OFFSET(x) offsetof(RTMPContext, x) | |
3095 | #define DEC AV_OPT_FLAG_DECODING_PARAM | |
3096 | #define ENC AV_OPT_FLAG_ENCODING_PARAM | |
3097 | ||
3098 | static const AVOption rtmp_options[] = { | |
3099 | {"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC}, | |
3100 | {"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}, | |
3101 | {"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC}, | |
3102 | {"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}, | |
3103 | {"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}, | |
3104 | {"rtmp_live", "Specify that the media is a live stream.", OFFSET(live), AV_OPT_TYPE_INT, {.i64 = -2}, INT_MIN, INT_MAX, DEC, "rtmp_live"}, | |
3105 | {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, "rtmp_live"}, | |
3106 | {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, "rtmp_live"}, | |
3107 | {"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, "rtmp_live"}, | |
3108 | {"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}, | |
3109 | {"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC}, | |
3110 | {"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC}, | |
3111 | {"rtmp_swfhash", "SHA256 hash of the decompressed SWF file (32 bytes).", OFFSET(swfhash), AV_OPT_TYPE_BINARY, .flags = DEC}, | |
3112 | {"rtmp_swfsize", "Size of the decompressed SWF file, required for SWFVerification.", OFFSET(swfsize), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC}, | |
3113 | {"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}, | |
3114 | {"rtmp_swfverify", "URL to player swf file, compute hash/size automatically.", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC}, | |
3115 | {"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}, | |
3116 | {"rtmp_listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtmp_listen" }, | |
3117 | {"listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtmp_listen" }, | |
3118 | {"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, "rtmp_listen" }, | |
3119 | { NULL }, | |
3120 | }; | |
3121 | ||
3122 | #define RTMP_PROTOCOL(flavor) \ | |
3123 | static const AVClass flavor##_class = { \ | |
3124 | .class_name = #flavor, \ | |
3125 | .item_name = av_default_item_name, \ | |
3126 | .option = rtmp_options, \ | |
3127 | .version = LIBAVUTIL_VERSION_INT, \ | |
3128 | }; \ | |
3129 | \ | |
3130 | URLProtocol ff_##flavor##_protocol = { \ | |
3131 | .name = #flavor, \ | |
3132 | .url_open = rtmp_open, \ | |
3133 | .url_read = rtmp_read, \ | |
3134 | .url_read_seek = rtmp_seek, \ | |
f6fa7814 | 3135 | .url_read_pause = rtmp_pause, \ |
2ba45a60 DM |
3136 | .url_write = rtmp_write, \ |
3137 | .url_close = rtmp_close, \ | |
3138 | .priv_data_size = sizeof(RTMPContext), \ | |
3139 | .flags = URL_PROTOCOL_FLAG_NETWORK, \ | |
3140 | .priv_data_class= &flavor##_class, \ | |
3141 | }; | |
3142 | ||
3143 | ||
3144 | RTMP_PROTOCOL(rtmp) | |
3145 | RTMP_PROTOCOL(rtmpe) | |
3146 | RTMP_PROTOCOL(rtmps) | |
3147 | RTMP_PROTOCOL(rtmpt) | |
3148 | RTMP_PROTOCOL(rtmpte) | |
3149 | RTMP_PROTOCOL(rtmpts) |