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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 | |
99 | int skip_bytes; ///< number of bytes to skip from the input FLV stream in the next write call | |
100 | int has_audio; ///< presence of audio data | |
101 | int has_video; ///< presence of video data | |
102 | int received_metadata; ///< Indicates if we have received metadata about the streams | |
103 | uint8_t flv_header[RTMP_HEADER]; ///< partial incoming flv packet header | |
104 | int flv_header_bytes; ///< number of initialized bytes in flv_header | |
105 | int nb_invokes; ///< keeps track of invoke messages | |
106 | char* tcurl; ///< url of the target stream | |
107 | char* flashver; ///< version of the flash plugin | |
108 | char* swfhash; ///< SHA256 hash of the decompressed SWF file (32 bytes) | |
109 | int swfhash_len; ///< length of the SHA256 hash | |
110 | int swfsize; ///< size of the decompressed SWF file | |
111 | char* swfurl; ///< url of the swf player | |
112 | char* swfverify; ///< URL to player swf file, compute hash/size automatically | |
113 | char swfverification[42]; ///< hash of the SWF verification | |
114 | char* pageurl; ///< url of the web page | |
115 | char* subscribe; ///< name of live stream to subscribe | |
116 | int server_bw; ///< server bandwidth | |
117 | int client_buffer_time; ///< client buffer time in ms | |
118 | int flush_interval; ///< number of packets flushed in the same request (RTMPT only) | |
119 | int encrypted; ///< use an encrypted connection (RTMPE only) | |
120 | TrackedMethod*tracked_methods; ///< tracked methods buffer | |
121 | int nb_tracked_methods; ///< number of tracked methods | |
122 | int tracked_methods_size; ///< size of the tracked methods buffer | |
123 | int listen; ///< listen mode flag | |
124 | int listen_timeout; ///< listen timeout to wait for new connections | |
125 | int nb_streamid; ///< The next stream id to return on createStream calls | |
126 | char username[50]; | |
127 | char password[50]; | |
128 | char auth_params[500]; | |
129 | int do_reconnect; | |
130 | int auth_tried; | |
131 | } RTMPContext; | |
132 | ||
133 | #define PLAYER_KEY_OPEN_PART_LEN 30 ///< length of partial key used for first client digest signing | |
134 | /** Client key used for digest signing */ | |
135 | static const uint8_t rtmp_player_key[] = { | |
136 | 'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ', | |
137 | 'F', 'l', 'a', 's', 'h', ' ', 'P', 'l', 'a', 'y', 'e', 'r', ' ', '0', '0', '1', | |
138 | ||
139 | 0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02, | |
140 | 0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8, | |
141 | 0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE | |
142 | }; | |
143 | ||
144 | #define SERVER_KEY_OPEN_PART_LEN 36 ///< length of partial key used for first server digest signing | |
145 | /** Key used for RTMP server digest signing */ | |
146 | static const uint8_t rtmp_server_key[] = { | |
147 | 'G', 'e', 'n', 'u', 'i', 'n', 'e', ' ', 'A', 'd', 'o', 'b', 'e', ' ', | |
148 | 'F', 'l', 'a', 's', 'h', ' ', 'M', 'e', 'd', 'i', 'a', ' ', | |
149 | 'S', 'e', 'r', 'v', 'e', 'r', ' ', '0', '0', '1', | |
150 | ||
151 | 0xF0, 0xEE, 0xC2, 0x4A, 0x80, 0x68, 0xBE, 0xE8, 0x2E, 0x00, 0xD0, 0xD1, 0x02, | |
152 | 0x9E, 0x7E, 0x57, 0x6E, 0xEC, 0x5D, 0x2D, 0x29, 0x80, 0x6F, 0xAB, 0x93, 0xB8, | |
153 | 0xE6, 0x36, 0xCF, 0xEB, 0x31, 0xAE | |
154 | }; | |
155 | ||
156 | static int handle_chunk_size(URLContext *s, RTMPPacket *pkt); | |
157 | ||
158 | static int add_tracked_method(RTMPContext *rt, const char *name, int id) | |
159 | { | |
160 | int err; | |
161 | ||
162 | if (rt->nb_tracked_methods + 1 > rt->tracked_methods_size) { | |
163 | rt->tracked_methods_size = (rt->nb_tracked_methods + 1) * 2; | |
164 | if ((err = av_reallocp(&rt->tracked_methods, rt->tracked_methods_size * | |
165 | sizeof(*rt->tracked_methods))) < 0) { | |
166 | rt->nb_tracked_methods = 0; | |
167 | rt->tracked_methods_size = 0; | |
168 | return err; | |
169 | } | |
170 | } | |
171 | ||
172 | rt->tracked_methods[rt->nb_tracked_methods].name = av_strdup(name); | |
173 | if (!rt->tracked_methods[rt->nb_tracked_methods].name) | |
174 | return AVERROR(ENOMEM); | |
175 | rt->tracked_methods[rt->nb_tracked_methods].id = id; | |
176 | rt->nb_tracked_methods++; | |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
181 | static void del_tracked_method(RTMPContext *rt, int index) | |
182 | { | |
183 | memmove(&rt->tracked_methods[index], &rt->tracked_methods[index + 1], | |
184 | sizeof(*rt->tracked_methods) * (rt->nb_tracked_methods - index - 1)); | |
185 | rt->nb_tracked_methods--; | |
186 | } | |
187 | ||
188 | static int find_tracked_method(URLContext *s, RTMPPacket *pkt, int offset, | |
189 | char **tracked_method) | |
190 | { | |
191 | RTMPContext *rt = s->priv_data; | |
192 | GetByteContext gbc; | |
193 | double pkt_id; | |
194 | int ret; | |
195 | int i; | |
196 | ||
197 | bytestream2_init(&gbc, pkt->data + offset, pkt->size - offset); | |
198 | if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0) | |
199 | return ret; | |
200 | ||
201 | for (i = 0; i < rt->nb_tracked_methods; i++) { | |
202 | if (rt->tracked_methods[i].id != pkt_id) | |
203 | continue; | |
204 | ||
205 | *tracked_method = rt->tracked_methods[i].name; | |
206 | del_tracked_method(rt, i); | |
207 | break; | |
208 | } | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static void free_tracked_methods(RTMPContext *rt) | |
214 | { | |
215 | int i; | |
216 | ||
217 | for (i = 0; i < rt->nb_tracked_methods; i ++) | |
218 | av_free(rt->tracked_methods[i].name); | |
219 | av_free(rt->tracked_methods); | |
220 | rt->tracked_methods = NULL; | |
221 | rt->tracked_methods_size = 0; | |
222 | rt->nb_tracked_methods = 0; | |
223 | } | |
224 | ||
225 | static int rtmp_send_packet(RTMPContext *rt, RTMPPacket *pkt, int track) | |
226 | { | |
227 | int ret; | |
228 | ||
229 | if (pkt->type == RTMP_PT_INVOKE && track) { | |
230 | GetByteContext gbc; | |
231 | char name[128]; | |
232 | double pkt_id; | |
233 | int len; | |
234 | ||
235 | bytestream2_init(&gbc, pkt->data, pkt->size); | |
236 | if ((ret = ff_amf_read_string(&gbc, name, sizeof(name), &len)) < 0) | |
237 | goto fail; | |
238 | ||
239 | if ((ret = ff_amf_read_number(&gbc, &pkt_id)) < 0) | |
240 | goto fail; | |
241 | ||
242 | if ((ret = add_tracked_method(rt, name, pkt_id)) < 0) | |
243 | goto fail; | |
244 | } | |
245 | ||
246 | ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size, | |
247 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
248 | fail: | |
249 | ff_rtmp_packet_destroy(pkt); | |
250 | return ret; | |
251 | } | |
252 | ||
253 | static int rtmp_write_amf_data(URLContext *s, char *param, uint8_t **p) | |
254 | { | |
255 | char *field, *value; | |
256 | char type; | |
257 | ||
258 | /* The type must be B for Boolean, N for number, S for string, O for | |
259 | * object, or Z for null. For Booleans the data must be either 0 or 1 for | |
260 | * FALSE or TRUE, respectively. Likewise for Objects the data must be | |
261 | * 0 or 1 to end or begin an object, respectively. Data items in subobjects | |
262 | * may be named, by prefixing the type with 'N' and specifying the name | |
263 | * before the value (ie. NB:myFlag:1). This option may be used multiple times | |
264 | * to construct arbitrary AMF sequences. */ | |
265 | if (param[0] && param[1] == ':') { | |
266 | type = param[0]; | |
267 | value = param + 2; | |
268 | } else if (param[0] == 'N' && param[1] && param[2] == ':') { | |
269 | type = param[1]; | |
270 | field = param + 3; | |
271 | value = strchr(field, ':'); | |
272 | if (!value) | |
273 | goto fail; | |
274 | *value = '\0'; | |
275 | value++; | |
276 | ||
277 | ff_amf_write_field_name(p, field); | |
278 | } else { | |
279 | goto fail; | |
280 | } | |
281 | ||
282 | switch (type) { | |
283 | case 'B': | |
284 | ff_amf_write_bool(p, value[0] != '0'); | |
285 | break; | |
286 | case 'S': | |
287 | ff_amf_write_string(p, value); | |
288 | break; | |
289 | case 'N': | |
290 | ff_amf_write_number(p, strtod(value, NULL)); | |
291 | break; | |
292 | case 'Z': | |
293 | ff_amf_write_null(p); | |
294 | break; | |
295 | case 'O': | |
296 | if (value[0] != '0') | |
297 | ff_amf_write_object_start(p); | |
298 | else | |
299 | ff_amf_write_object_end(p); | |
300 | break; | |
301 | default: | |
302 | goto fail; | |
303 | break; | |
304 | } | |
305 | ||
306 | return 0; | |
307 | ||
308 | fail: | |
309 | av_log(s, AV_LOG_ERROR, "Invalid AMF parameter: %s\n", param); | |
310 | return AVERROR(EINVAL); | |
311 | } | |
312 | ||
313 | /** | |
314 | * Generate 'connect' call and send it to the server. | |
315 | */ | |
316 | static int gen_connect(URLContext *s, RTMPContext *rt) | |
317 | { | |
318 | RTMPPacket pkt; | |
319 | uint8_t *p; | |
320 | int ret; | |
321 | ||
322 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
323 | 0, 4096 + APP_MAX_LENGTH)) < 0) | |
324 | return ret; | |
325 | ||
326 | p = pkt.data; | |
327 | ||
328 | ff_amf_write_string(&p, "connect"); | |
329 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
330 | ff_amf_write_object_start(&p); | |
331 | ff_amf_write_field_name(&p, "app"); | |
332 | ff_amf_write_string2(&p, rt->app, rt->auth_params); | |
333 | ||
334 | if (!rt->is_input) { | |
335 | ff_amf_write_field_name(&p, "type"); | |
336 | ff_amf_write_string(&p, "nonprivate"); | |
337 | } | |
338 | ff_amf_write_field_name(&p, "flashVer"); | |
339 | ff_amf_write_string(&p, rt->flashver); | |
340 | ||
341 | if (rt->swfurl) { | |
342 | ff_amf_write_field_name(&p, "swfUrl"); | |
343 | ff_amf_write_string(&p, rt->swfurl); | |
344 | } | |
345 | ||
346 | ff_amf_write_field_name(&p, "tcUrl"); | |
347 | ff_amf_write_string2(&p, rt->tcurl, rt->auth_params); | |
348 | if (rt->is_input) { | |
349 | ff_amf_write_field_name(&p, "fpad"); | |
350 | ff_amf_write_bool(&p, 0); | |
351 | ff_amf_write_field_name(&p, "capabilities"); | |
352 | ff_amf_write_number(&p, 15.0); | |
353 | ||
354 | /* Tell the server we support all the audio codecs except | |
355 | * SUPPORT_SND_INTEL (0x0008) and SUPPORT_SND_UNUSED (0x0010) | |
356 | * which are unused in the RTMP protocol implementation. */ | |
357 | ff_amf_write_field_name(&p, "audioCodecs"); | |
358 | ff_amf_write_number(&p, 4071.0); | |
359 | ff_amf_write_field_name(&p, "videoCodecs"); | |
360 | ff_amf_write_number(&p, 252.0); | |
361 | ff_amf_write_field_name(&p, "videoFunction"); | |
362 | ff_amf_write_number(&p, 1.0); | |
363 | ||
364 | if (rt->pageurl) { | |
365 | ff_amf_write_field_name(&p, "pageUrl"); | |
366 | ff_amf_write_string(&p, rt->pageurl); | |
367 | } | |
368 | } | |
369 | ff_amf_write_object_end(&p); | |
370 | ||
371 | if (rt->conn) { | |
372 | char *param = rt->conn; | |
373 | ||
374 | // Write arbitrary AMF data to the Connect message. | |
375 | while (param) { | |
376 | char *sep; | |
377 | param += strspn(param, " "); | |
378 | if (!*param) | |
379 | break; | |
380 | sep = strchr(param, ' '); | |
381 | if (sep) | |
382 | *sep = '\0'; | |
383 | if ((ret = rtmp_write_amf_data(s, param, &p)) < 0) { | |
384 | // Invalid AMF parameter. | |
385 | ff_rtmp_packet_destroy(&pkt); | |
386 | return ret; | |
387 | } | |
388 | ||
389 | if (sep) | |
390 | param = sep + 1; | |
391 | else | |
392 | break; | |
393 | } | |
394 | } | |
395 | ||
396 | pkt.size = p - pkt.data; | |
397 | ||
398 | return rtmp_send_packet(rt, &pkt, 1); | |
399 | } | |
400 | ||
401 | static int read_connect(URLContext *s, RTMPContext *rt) | |
402 | { | |
403 | RTMPPacket pkt = { 0 }; | |
404 | uint8_t *p; | |
405 | const uint8_t *cp; | |
406 | int ret; | |
407 | char command[64]; | |
408 | int stringlen; | |
409 | double seqnum; | |
410 | uint8_t tmpstr[256]; | |
411 | GetByteContext gbc; | |
412 | ||
413 | if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size, | |
414 | &rt->prev_pkt[0], &rt->nb_prev_pkt[0])) < 0) | |
415 | return ret; | |
416 | ||
417 | if (pkt.type == RTMP_PT_CHUNK_SIZE) { | |
418 | if ((ret = handle_chunk_size(s, &pkt)) < 0) | |
419 | return ret; | |
420 | ||
421 | ff_rtmp_packet_destroy(&pkt); | |
422 | if ((ret = ff_rtmp_packet_read(rt->stream, &pkt, rt->in_chunk_size, | |
423 | &rt->prev_pkt[0], &rt->nb_prev_pkt[0])) < 0) | |
424 | return ret; | |
425 | } | |
426 | ||
427 | cp = pkt.data; | |
428 | bytestream2_init(&gbc, cp, pkt.size); | |
429 | if (ff_amf_read_string(&gbc, command, sizeof(command), &stringlen)) { | |
430 | av_log(s, AV_LOG_ERROR, "Unable to read command string\n"); | |
431 | ff_rtmp_packet_destroy(&pkt); | |
432 | return AVERROR_INVALIDDATA; | |
433 | } | |
434 | if (strcmp(command, "connect")) { | |
435 | av_log(s, AV_LOG_ERROR, "Expecting connect, got %s\n", command); | |
436 | ff_rtmp_packet_destroy(&pkt); | |
437 | return AVERROR_INVALIDDATA; | |
438 | } | |
439 | ret = ff_amf_read_number(&gbc, &seqnum); | |
440 | if (ret) | |
441 | av_log(s, AV_LOG_WARNING, "SeqNum not found\n"); | |
442 | /* Here one could parse an AMF Object with data as flashVers and others. */ | |
443 | ret = ff_amf_get_field_value(gbc.buffer, | |
444 | gbc.buffer + bytestream2_get_bytes_left(&gbc), | |
445 | "app", tmpstr, sizeof(tmpstr)); | |
446 | if (ret) | |
447 | av_log(s, AV_LOG_WARNING, "App field not found in connect\n"); | |
448 | if (!ret && strcmp(tmpstr, rt->app)) | |
449 | av_log(s, AV_LOG_WARNING, "App field don't match up: %s <-> %s\n", | |
450 | tmpstr, rt->app); | |
451 | ff_rtmp_packet_destroy(&pkt); | |
452 | ||
453 | // Send Window Acknowledgement Size (as defined in speficication) | |
454 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, | |
455 | RTMP_PT_SERVER_BW, 0, 4)) < 0) | |
456 | return ret; | |
457 | p = pkt.data; | |
458 | bytestream_put_be32(&p, rt->server_bw); | |
459 | pkt.size = p - pkt.data; | |
460 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
461 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
462 | ff_rtmp_packet_destroy(&pkt); | |
463 | if (ret < 0) | |
464 | return ret; | |
465 | // Send Peer Bandwidth | |
466 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, | |
467 | RTMP_PT_CLIENT_BW, 0, 5)) < 0) | |
468 | return ret; | |
469 | p = pkt.data; | |
470 | bytestream_put_be32(&p, rt->server_bw); | |
471 | bytestream_put_byte(&p, 2); // dynamic | |
472 | pkt.size = p - pkt.data; | |
473 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
474 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
475 | ff_rtmp_packet_destroy(&pkt); | |
476 | if (ret < 0) | |
477 | return ret; | |
478 | ||
479 | // Ping request | |
480 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, | |
481 | RTMP_PT_PING, 0, 6)) < 0) | |
482 | return ret; | |
483 | ||
484 | p = pkt.data; | |
485 | bytestream_put_be16(&p, 0); // 0 -> Stream Begin | |
486 | bytestream_put_be32(&p, 0); | |
487 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
488 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
489 | ff_rtmp_packet_destroy(&pkt); | |
490 | if (ret < 0) | |
491 | return ret; | |
492 | ||
493 | // Chunk size | |
494 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, | |
495 | RTMP_PT_CHUNK_SIZE, 0, 4)) < 0) | |
496 | return ret; | |
497 | ||
498 | p = pkt.data; | |
499 | bytestream_put_be32(&p, rt->out_chunk_size); | |
500 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
501 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
502 | ff_rtmp_packet_destroy(&pkt); | |
503 | if (ret < 0) | |
504 | return ret; | |
505 | ||
506 | // Send result_ NetConnection.Connect.Success to connect | |
507 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, | |
508 | RTMP_PT_INVOKE, 0, | |
509 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) | |
510 | return ret; | |
511 | ||
512 | p = pkt.data; | |
513 | ff_amf_write_string(&p, "_result"); | |
514 | ff_amf_write_number(&p, seqnum); | |
515 | ||
516 | ff_amf_write_object_start(&p); | |
517 | ff_amf_write_field_name(&p, "fmsVer"); | |
518 | ff_amf_write_string(&p, "FMS/3,0,1,123"); | |
519 | ff_amf_write_field_name(&p, "capabilities"); | |
520 | ff_amf_write_number(&p, 31); | |
521 | ff_amf_write_object_end(&p); | |
522 | ||
523 | ff_amf_write_object_start(&p); | |
524 | ff_amf_write_field_name(&p, "level"); | |
525 | ff_amf_write_string(&p, "status"); | |
526 | ff_amf_write_field_name(&p, "code"); | |
527 | ff_amf_write_string(&p, "NetConnection.Connect.Success"); | |
528 | ff_amf_write_field_name(&p, "description"); | |
529 | ff_amf_write_string(&p, "Connection succeeded."); | |
530 | ff_amf_write_field_name(&p, "objectEncoding"); | |
531 | ff_amf_write_number(&p, 0); | |
532 | ff_amf_write_object_end(&p); | |
533 | ||
534 | pkt.size = p - pkt.data; | |
535 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
536 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
537 | ff_rtmp_packet_destroy(&pkt); | |
538 | if (ret < 0) | |
539 | return ret; | |
540 | ||
541 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, | |
542 | RTMP_PT_INVOKE, 0, 30)) < 0) | |
543 | return ret; | |
544 | p = pkt.data; | |
545 | ff_amf_write_string(&p, "onBWDone"); | |
546 | ff_amf_write_number(&p, 0); | |
547 | ff_amf_write_null(&p); | |
548 | ff_amf_write_number(&p, 8192); | |
549 | pkt.size = p - pkt.data; | |
550 | ret = ff_rtmp_packet_write(rt->stream, &pkt, rt->out_chunk_size, | |
551 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
552 | ff_rtmp_packet_destroy(&pkt); | |
553 | ||
554 | return ret; | |
555 | } | |
556 | ||
557 | /** | |
558 | * Generate 'releaseStream' call and send it to the server. It should make | |
559 | * the server release some channel for media streams. | |
560 | */ | |
561 | static int gen_release_stream(URLContext *s, RTMPContext *rt) | |
562 | { | |
563 | RTMPPacket pkt; | |
564 | uint8_t *p; | |
565 | int ret; | |
566 | ||
567 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
568 | 0, 29 + strlen(rt->playpath))) < 0) | |
569 | return ret; | |
570 | ||
571 | av_log(s, AV_LOG_DEBUG, "Releasing stream...\n"); | |
572 | p = pkt.data; | |
573 | ff_amf_write_string(&p, "releaseStream"); | |
574 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
575 | ff_amf_write_null(&p); | |
576 | ff_amf_write_string(&p, rt->playpath); | |
577 | ||
578 | return rtmp_send_packet(rt, &pkt, 1); | |
579 | } | |
580 | ||
581 | /** | |
582 | * Generate 'FCPublish' call and send it to the server. It should make | |
583 | * the server preapare for receiving media streams. | |
584 | */ | |
585 | static int gen_fcpublish_stream(URLContext *s, RTMPContext *rt) | |
586 | { | |
587 | RTMPPacket pkt; | |
588 | uint8_t *p; | |
589 | int ret; | |
590 | ||
591 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
592 | 0, 25 + strlen(rt->playpath))) < 0) | |
593 | return ret; | |
594 | ||
595 | av_log(s, AV_LOG_DEBUG, "FCPublish stream...\n"); | |
596 | p = pkt.data; | |
597 | ff_amf_write_string(&p, "FCPublish"); | |
598 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
599 | ff_amf_write_null(&p); | |
600 | ff_amf_write_string(&p, rt->playpath); | |
601 | ||
602 | return rtmp_send_packet(rt, &pkt, 1); | |
603 | } | |
604 | ||
605 | /** | |
606 | * Generate 'FCUnpublish' call and send it to the server. It should make | |
607 | * the server destroy stream. | |
608 | */ | |
609 | static int gen_fcunpublish_stream(URLContext *s, RTMPContext *rt) | |
610 | { | |
611 | RTMPPacket pkt; | |
612 | uint8_t *p; | |
613 | int ret; | |
614 | ||
615 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
616 | 0, 27 + strlen(rt->playpath))) < 0) | |
617 | return ret; | |
618 | ||
619 | av_log(s, AV_LOG_DEBUG, "UnPublishing stream...\n"); | |
620 | p = pkt.data; | |
621 | ff_amf_write_string(&p, "FCUnpublish"); | |
622 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
623 | ff_amf_write_null(&p); | |
624 | ff_amf_write_string(&p, rt->playpath); | |
625 | ||
626 | return rtmp_send_packet(rt, &pkt, 0); | |
627 | } | |
628 | ||
629 | /** | |
630 | * Generate 'createStream' call and send it to the server. It should make | |
631 | * the server allocate some channel for media streams. | |
632 | */ | |
633 | static int gen_create_stream(URLContext *s, RTMPContext *rt) | |
634 | { | |
635 | RTMPPacket pkt; | |
636 | uint8_t *p; | |
637 | int ret; | |
638 | ||
639 | av_log(s, AV_LOG_DEBUG, "Creating stream...\n"); | |
640 | ||
641 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
642 | 0, 25)) < 0) | |
643 | return ret; | |
644 | ||
645 | p = pkt.data; | |
646 | ff_amf_write_string(&p, "createStream"); | |
647 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
648 | ff_amf_write_null(&p); | |
649 | ||
650 | return rtmp_send_packet(rt, &pkt, 1); | |
651 | } | |
652 | ||
653 | ||
654 | /** | |
655 | * Generate 'deleteStream' call and send it to the server. It should make | |
656 | * the server remove some channel for media streams. | |
657 | */ | |
658 | static int gen_delete_stream(URLContext *s, RTMPContext *rt) | |
659 | { | |
660 | RTMPPacket pkt; | |
661 | uint8_t *p; | |
662 | int ret; | |
663 | ||
664 | av_log(s, AV_LOG_DEBUG, "Deleting stream...\n"); | |
665 | ||
666 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
667 | 0, 34)) < 0) | |
668 | return ret; | |
669 | ||
670 | p = pkt.data; | |
671 | ff_amf_write_string(&p, "deleteStream"); | |
672 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
673 | ff_amf_write_null(&p); | |
674 | ff_amf_write_number(&p, rt->stream_id); | |
675 | ||
676 | return rtmp_send_packet(rt, &pkt, 0); | |
677 | } | |
678 | ||
679 | /** | |
680 | * Generate client buffer time and send it to the server. | |
681 | */ | |
682 | static int gen_buffer_time(URLContext *s, RTMPContext *rt) | |
683 | { | |
684 | RTMPPacket pkt; | |
685 | uint8_t *p; | |
686 | int ret; | |
687 | ||
688 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, | |
689 | 1, 10)) < 0) | |
690 | return ret; | |
691 | ||
692 | p = pkt.data; | |
693 | bytestream_put_be16(&p, 3); | |
694 | bytestream_put_be32(&p, rt->stream_id); | |
695 | bytestream_put_be32(&p, rt->client_buffer_time); | |
696 | ||
697 | return rtmp_send_packet(rt, &pkt, 0); | |
698 | } | |
699 | ||
700 | /** | |
701 | * Generate 'play' call and send it to the server, then ping the server | |
702 | * to start actual playing. | |
703 | */ | |
704 | static int gen_play(URLContext *s, RTMPContext *rt) | |
705 | { | |
706 | RTMPPacket pkt; | |
707 | uint8_t *p; | |
708 | int ret; | |
709 | ||
710 | av_log(s, AV_LOG_DEBUG, "Sending play command for '%s'\n", rt->playpath); | |
711 | ||
712 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE, | |
713 | 0, 29 + strlen(rt->playpath))) < 0) | |
714 | return ret; | |
715 | ||
716 | pkt.extra = rt->stream_id; | |
717 | ||
718 | p = pkt.data; | |
719 | ff_amf_write_string(&p, "play"); | |
720 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
721 | ff_amf_write_null(&p); | |
722 | ff_amf_write_string(&p, rt->playpath); | |
723 | ff_amf_write_number(&p, rt->live * 1000); | |
724 | ||
725 | return rtmp_send_packet(rt, &pkt, 1); | |
726 | } | |
727 | ||
728 | static int gen_seek(URLContext *s, RTMPContext *rt, int64_t timestamp) | |
729 | { | |
730 | RTMPPacket pkt; | |
731 | uint8_t *p; | |
732 | int ret; | |
733 | ||
734 | av_log(s, AV_LOG_DEBUG, "Sending seek command for timestamp %"PRId64"\n", | |
735 | timestamp); | |
736 | ||
737 | if ((ret = ff_rtmp_packet_create(&pkt, 3, RTMP_PT_INVOKE, 0, 26)) < 0) | |
738 | return ret; | |
739 | ||
740 | pkt.extra = rt->stream_id; | |
741 | ||
742 | p = pkt.data; | |
743 | ff_amf_write_string(&p, "seek"); | |
744 | ff_amf_write_number(&p, 0); //no tracking back responses | |
745 | ff_amf_write_null(&p); //as usual, the first null param | |
746 | ff_amf_write_number(&p, timestamp); //where we want to jump | |
747 | ||
748 | return rtmp_send_packet(rt, &pkt, 1); | |
749 | } | |
750 | ||
751 | /** | |
752 | * Generate 'publish' call and send it to the server. | |
753 | */ | |
754 | static int gen_publish(URLContext *s, RTMPContext *rt) | |
755 | { | |
756 | RTMPPacket pkt; | |
757 | uint8_t *p; | |
758 | int ret; | |
759 | ||
760 | av_log(s, AV_LOG_DEBUG, "Sending publish command for '%s'\n", rt->playpath); | |
761 | ||
762 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SOURCE_CHANNEL, RTMP_PT_INVOKE, | |
763 | 0, 30 + strlen(rt->playpath))) < 0) | |
764 | return ret; | |
765 | ||
766 | pkt.extra = rt->stream_id; | |
767 | ||
768 | p = pkt.data; | |
769 | ff_amf_write_string(&p, "publish"); | |
770 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
771 | ff_amf_write_null(&p); | |
772 | ff_amf_write_string(&p, rt->playpath); | |
773 | ff_amf_write_string(&p, "live"); | |
774 | ||
775 | return rtmp_send_packet(rt, &pkt, 1); | |
776 | } | |
777 | ||
778 | /** | |
779 | * Generate ping reply and send it to the server. | |
780 | */ | |
781 | static int gen_pong(URLContext *s, RTMPContext *rt, RTMPPacket *ppkt) | |
782 | { | |
783 | RTMPPacket pkt; | |
784 | uint8_t *p; | |
785 | int ret; | |
786 | ||
787 | if (ppkt->size < 6) { | |
788 | av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n", | |
789 | ppkt->size); | |
790 | return AVERROR_INVALIDDATA; | |
791 | } | |
792 | ||
793 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, | |
794 | ppkt->timestamp + 1, 6)) < 0) | |
795 | return ret; | |
796 | ||
797 | p = pkt.data; | |
798 | bytestream_put_be16(&p, 7); | |
799 | bytestream_put_be32(&p, AV_RB32(ppkt->data+2)); | |
800 | ||
801 | return rtmp_send_packet(rt, &pkt, 0); | |
802 | } | |
803 | ||
804 | /** | |
805 | * Generate SWF verification message and send it to the server. | |
806 | */ | |
807 | static int gen_swf_verification(URLContext *s, RTMPContext *rt) | |
808 | { | |
809 | RTMPPacket pkt; | |
810 | uint8_t *p; | |
811 | int ret; | |
812 | ||
813 | av_log(s, AV_LOG_DEBUG, "Sending SWF verification...\n"); | |
814 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_PING, | |
815 | 0, 44)) < 0) | |
816 | return ret; | |
817 | ||
818 | p = pkt.data; | |
819 | bytestream_put_be16(&p, 27); | |
820 | memcpy(p, rt->swfverification, 42); | |
821 | ||
822 | return rtmp_send_packet(rt, &pkt, 0); | |
823 | } | |
824 | ||
825 | /** | |
826 | * Generate server bandwidth message and send it to the server. | |
827 | */ | |
828 | static int gen_server_bw(URLContext *s, RTMPContext *rt) | |
829 | { | |
830 | RTMPPacket pkt; | |
831 | uint8_t *p; | |
832 | int ret; | |
833 | ||
834 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_SERVER_BW, | |
835 | 0, 4)) < 0) | |
836 | return ret; | |
837 | ||
838 | p = pkt.data; | |
839 | bytestream_put_be32(&p, rt->server_bw); | |
840 | ||
841 | return rtmp_send_packet(rt, &pkt, 0); | |
842 | } | |
843 | ||
844 | /** | |
845 | * Generate check bandwidth message and send it to the server. | |
846 | */ | |
847 | static int gen_check_bw(URLContext *s, RTMPContext *rt) | |
848 | { | |
849 | RTMPPacket pkt; | |
850 | uint8_t *p; | |
851 | int ret; | |
852 | ||
853 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
854 | 0, 21)) < 0) | |
855 | return ret; | |
856 | ||
857 | p = pkt.data; | |
858 | ff_amf_write_string(&p, "_checkbw"); | |
859 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
860 | ff_amf_write_null(&p); | |
861 | ||
862 | return rtmp_send_packet(rt, &pkt, 1); | |
863 | } | |
864 | ||
865 | /** | |
866 | * Generate report on bytes read so far and send it to the server. | |
867 | */ | |
868 | static int gen_bytes_read(URLContext *s, RTMPContext *rt, uint32_t ts) | |
869 | { | |
870 | RTMPPacket pkt; | |
871 | uint8_t *p; | |
872 | int ret; | |
873 | ||
874 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_NETWORK_CHANNEL, RTMP_PT_BYTES_READ, | |
875 | ts, 4)) < 0) | |
876 | return ret; | |
877 | ||
878 | p = pkt.data; | |
879 | bytestream_put_be32(&p, rt->bytes_read); | |
880 | ||
881 | return rtmp_send_packet(rt, &pkt, 0); | |
882 | } | |
883 | ||
884 | static int gen_fcsubscribe_stream(URLContext *s, RTMPContext *rt, | |
885 | const char *subscribe) | |
886 | { | |
887 | RTMPPacket pkt; | |
888 | uint8_t *p; | |
889 | int ret; | |
890 | ||
891 | if ((ret = ff_rtmp_packet_create(&pkt, RTMP_SYSTEM_CHANNEL, RTMP_PT_INVOKE, | |
892 | 0, 27 + strlen(subscribe))) < 0) | |
893 | return ret; | |
894 | ||
895 | p = pkt.data; | |
896 | ff_amf_write_string(&p, "FCSubscribe"); | |
897 | ff_amf_write_number(&p, ++rt->nb_invokes); | |
898 | ff_amf_write_null(&p); | |
899 | ff_amf_write_string(&p, subscribe); | |
900 | ||
901 | return rtmp_send_packet(rt, &pkt, 1); | |
902 | } | |
903 | ||
904 | int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap, | |
905 | const uint8_t *key, int keylen, uint8_t *dst) | |
906 | { | |
907 | struct AVSHA *sha; | |
908 | uint8_t hmac_buf[64+32] = {0}; | |
909 | int i; | |
910 | ||
911 | sha = av_sha_alloc(); | |
912 | if (!sha) | |
913 | return AVERROR(ENOMEM); | |
914 | ||
915 | if (keylen < 64) { | |
916 | memcpy(hmac_buf, key, keylen); | |
917 | } else { | |
918 | av_sha_init(sha, 256); | |
919 | av_sha_update(sha,key, keylen); | |
920 | av_sha_final(sha, hmac_buf); | |
921 | } | |
922 | for (i = 0; i < 64; i++) | |
923 | hmac_buf[i] ^= HMAC_IPAD_VAL; | |
924 | ||
925 | av_sha_init(sha, 256); | |
926 | av_sha_update(sha, hmac_buf, 64); | |
927 | if (gap <= 0) { | |
928 | av_sha_update(sha, src, len); | |
929 | } else { //skip 32 bytes used for storing digest | |
930 | av_sha_update(sha, src, gap); | |
931 | av_sha_update(sha, src + gap + 32, len - gap - 32); | |
932 | } | |
933 | av_sha_final(sha, hmac_buf + 64); | |
934 | ||
935 | for (i = 0; i < 64; i++) | |
936 | hmac_buf[i] ^= HMAC_IPAD_VAL ^ HMAC_OPAD_VAL; //reuse XORed key for opad | |
937 | av_sha_init(sha, 256); | |
938 | av_sha_update(sha, hmac_buf, 64+32); | |
939 | av_sha_final(sha, dst); | |
940 | ||
941 | av_free(sha); | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val, | |
947 | int add_val) | |
948 | { | |
949 | int i, digest_pos = 0; | |
950 | ||
951 | for (i = 0; i < 4; i++) | |
952 | digest_pos += buf[i + off]; | |
953 | digest_pos = digest_pos % mod_val + add_val; | |
954 | ||
955 | return digest_pos; | |
956 | } | |
957 | ||
958 | /** | |
959 | * Put HMAC-SHA2 digest of packet data (except for the bytes where this digest | |
960 | * will be stored) into that packet. | |
961 | * | |
962 | * @param buf handshake data (1536 bytes) | |
963 | * @param encrypted use an encrypted connection (RTMPE) | |
964 | * @return offset to the digest inside input data | |
965 | */ | |
966 | static int rtmp_handshake_imprint_with_digest(uint8_t *buf, int encrypted) | |
967 | { | |
968 | int ret, digest_pos; | |
969 | ||
970 | if (encrypted) | |
971 | digest_pos = ff_rtmp_calc_digest_pos(buf, 772, 728, 776); | |
972 | else | |
973 | digest_pos = ff_rtmp_calc_digest_pos(buf, 8, 728, 12); | |
974 | ||
975 | ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos, | |
976 | rtmp_player_key, PLAYER_KEY_OPEN_PART_LEN, | |
977 | buf + digest_pos); | |
978 | if (ret < 0) | |
979 | return ret; | |
980 | ||
981 | return digest_pos; | |
982 | } | |
983 | ||
984 | /** | |
985 | * Verify that the received server response has the expected digest value. | |
986 | * | |
987 | * @param buf handshake data received from the server (1536 bytes) | |
988 | * @param off position to search digest offset from | |
989 | * @return 0 if digest is valid, digest position otherwise | |
990 | */ | |
991 | static int rtmp_validate_digest(uint8_t *buf, int off) | |
992 | { | |
993 | uint8_t digest[32]; | |
994 | int ret, digest_pos; | |
995 | ||
996 | digest_pos = ff_rtmp_calc_digest_pos(buf, off, 728, off + 4); | |
997 | ||
998 | ret = ff_rtmp_calc_digest(buf, RTMP_HANDSHAKE_PACKET_SIZE, digest_pos, | |
999 | rtmp_server_key, SERVER_KEY_OPEN_PART_LEN, | |
1000 | digest); | |
1001 | if (ret < 0) | |
1002 | return ret; | |
1003 | ||
1004 | if (!memcmp(digest, buf + digest_pos, 32)) | |
1005 | return digest_pos; | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | static int rtmp_calc_swf_verification(URLContext *s, RTMPContext *rt, | |
1010 | uint8_t *buf) | |
1011 | { | |
1012 | uint8_t *p; | |
1013 | int ret; | |
1014 | ||
1015 | if (rt->swfhash_len != 32) { | |
1016 | av_log(s, AV_LOG_ERROR, | |
1017 | "Hash of the decompressed SWF file is not 32 bytes long.\n"); | |
1018 | return AVERROR(EINVAL); | |
1019 | } | |
1020 | ||
1021 | p = &rt->swfverification[0]; | |
1022 | bytestream_put_byte(&p, 1); | |
1023 | bytestream_put_byte(&p, 1); | |
1024 | bytestream_put_be32(&p, rt->swfsize); | |
1025 | bytestream_put_be32(&p, rt->swfsize); | |
1026 | ||
1027 | if ((ret = ff_rtmp_calc_digest(rt->swfhash, 32, 0, buf, 32, p)) < 0) | |
1028 | return ret; | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | #if CONFIG_ZLIB | |
1034 | static int rtmp_uncompress_swfplayer(uint8_t *in_data, int64_t in_size, | |
1035 | uint8_t **out_data, int64_t *out_size) | |
1036 | { | |
1037 | z_stream zs = { 0 }; | |
1038 | void *ptr; | |
1039 | int size; | |
1040 | int ret = 0; | |
1041 | ||
1042 | zs.avail_in = in_size; | |
1043 | zs.next_in = in_data; | |
1044 | ret = inflateInit(&zs); | |
1045 | if (ret != Z_OK) | |
1046 | return AVERROR_UNKNOWN; | |
1047 | ||
1048 | do { | |
1049 | uint8_t tmp_buf[16384]; | |
1050 | ||
1051 | zs.avail_out = sizeof(tmp_buf); | |
1052 | zs.next_out = tmp_buf; | |
1053 | ||
1054 | ret = inflate(&zs, Z_NO_FLUSH); | |
1055 | if (ret != Z_OK && ret != Z_STREAM_END) { | |
1056 | ret = AVERROR_UNKNOWN; | |
1057 | goto fail; | |
1058 | } | |
1059 | ||
1060 | size = sizeof(tmp_buf) - zs.avail_out; | |
1061 | if (!(ptr = av_realloc(*out_data, *out_size + size))) { | |
1062 | ret = AVERROR(ENOMEM); | |
1063 | goto fail; | |
1064 | } | |
1065 | *out_data = ptr; | |
1066 | ||
1067 | memcpy(*out_data + *out_size, tmp_buf, size); | |
1068 | *out_size += size; | |
1069 | } while (zs.avail_out == 0); | |
1070 | ||
1071 | fail: | |
1072 | inflateEnd(&zs); | |
1073 | return ret; | |
1074 | } | |
1075 | #endif | |
1076 | ||
1077 | static int rtmp_calc_swfhash(URLContext *s) | |
1078 | { | |
1079 | RTMPContext *rt = s->priv_data; | |
1080 | uint8_t *in_data = NULL, *out_data = NULL, *swfdata; | |
1081 | int64_t in_size, out_size; | |
1082 | URLContext *stream; | |
1083 | char swfhash[32]; | |
1084 | int swfsize; | |
1085 | int ret = 0; | |
1086 | ||
1087 | /* Get the SWF player file. */ | |
1088 | if ((ret = ffurl_open(&stream, rt->swfverify, AVIO_FLAG_READ, | |
1089 | &s->interrupt_callback, NULL)) < 0) { | |
1090 | av_log(s, AV_LOG_ERROR, "Cannot open connection %s.\n", rt->swfverify); | |
1091 | goto fail; | |
1092 | } | |
1093 | ||
1094 | if ((in_size = ffurl_seek(stream, 0, AVSEEK_SIZE)) < 0) { | |
1095 | ret = AVERROR(EIO); | |
1096 | goto fail; | |
1097 | } | |
1098 | ||
1099 | if (!(in_data = av_malloc(in_size))) { | |
1100 | ret = AVERROR(ENOMEM); | |
1101 | goto fail; | |
1102 | } | |
1103 | ||
1104 | if ((ret = ffurl_read_complete(stream, in_data, in_size)) < 0) | |
1105 | goto fail; | |
1106 | ||
1107 | if (in_size < 3) { | |
1108 | ret = AVERROR_INVALIDDATA; | |
1109 | goto fail; | |
1110 | } | |
1111 | ||
1112 | if (!memcmp(in_data, "CWS", 3)) { | |
1113 | /* Decompress the SWF player file using Zlib. */ | |
1114 | if (!(out_data = av_malloc(8))) { | |
1115 | ret = AVERROR(ENOMEM); | |
1116 | goto fail; | |
1117 | } | |
1118 | *in_data = 'F'; // magic stuff | |
1119 | memcpy(out_data, in_data, 8); | |
1120 | out_size = 8; | |
1121 | ||
1122 | #if CONFIG_ZLIB | |
1123 | if ((ret = rtmp_uncompress_swfplayer(in_data + 8, in_size - 8, | |
1124 | &out_data, &out_size)) < 0) | |
1125 | goto fail; | |
1126 | #else | |
1127 | av_log(s, AV_LOG_ERROR, | |
1128 | "Zlib is required for decompressing the SWF player file.\n"); | |
1129 | ret = AVERROR(EINVAL); | |
1130 | goto fail; | |
1131 | #endif | |
1132 | swfsize = out_size; | |
1133 | swfdata = out_data; | |
1134 | } else { | |
1135 | swfsize = in_size; | |
1136 | swfdata = in_data; | |
1137 | } | |
1138 | ||
1139 | /* Compute the SHA256 hash of the SWF player file. */ | |
1140 | if ((ret = ff_rtmp_calc_digest(swfdata, swfsize, 0, | |
1141 | "Genuine Adobe Flash Player 001", 30, | |
1142 | swfhash)) < 0) | |
1143 | goto fail; | |
1144 | ||
1145 | /* Set SWFVerification parameters. */ | |
1146 | av_opt_set_bin(rt, "rtmp_swfhash", swfhash, 32, 0); | |
1147 | rt->swfsize = swfsize; | |
1148 | ||
1149 | fail: | |
1150 | av_freep(&in_data); | |
1151 | av_freep(&out_data); | |
1152 | ffurl_close(stream); | |
1153 | return ret; | |
1154 | } | |
1155 | ||
1156 | /** | |
1157 | * Perform handshake with the server by means of exchanging pseudorandom data | |
1158 | * signed with HMAC-SHA2 digest. | |
1159 | * | |
1160 | * @return 0 if handshake succeeds, negative value otherwise | |
1161 | */ | |
1162 | static int rtmp_handshake(URLContext *s, RTMPContext *rt) | |
1163 | { | |
1164 | AVLFG rnd; | |
1165 | uint8_t tosend [RTMP_HANDSHAKE_PACKET_SIZE+1] = { | |
1166 | 3, // unencrypted data | |
1167 | 0, 0, 0, 0, // client uptime | |
1168 | RTMP_CLIENT_VER1, | |
1169 | RTMP_CLIENT_VER2, | |
1170 | RTMP_CLIENT_VER3, | |
1171 | RTMP_CLIENT_VER4, | |
1172 | }; | |
1173 | uint8_t clientdata[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1174 | uint8_t serverdata[RTMP_HANDSHAKE_PACKET_SIZE+1]; | |
1175 | int i; | |
1176 | int server_pos, client_pos; | |
1177 | uint8_t digest[32], signature[32]; | |
1178 | int ret, type = 0; | |
1179 | ||
1180 | av_log(s, AV_LOG_DEBUG, "Handshaking...\n"); | |
1181 | ||
1182 | av_lfg_init(&rnd, 0xDEADC0DE); | |
1183 | // generate handshake packet - 1536 bytes of pseudorandom data | |
1184 | for (i = 9; i <= RTMP_HANDSHAKE_PACKET_SIZE; i++) | |
1185 | tosend[i] = av_lfg_get(&rnd) >> 24; | |
1186 | ||
1187 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1188 | /* When the client wants to use RTMPE, we have to change the command | |
1189 | * byte to 0x06 which means to use encrypted data and we have to set | |
1190 | * the flash version to at least 9.0.115.0. */ | |
1191 | tosend[0] = 6; | |
1192 | tosend[5] = 128; | |
1193 | tosend[6] = 0; | |
1194 | tosend[7] = 3; | |
1195 | tosend[8] = 2; | |
1196 | ||
1197 | /* Initialize the Diffie-Hellmann context and generate the public key | |
1198 | * to send to the server. */ | |
1199 | if ((ret = ff_rtmpe_gen_pub_key(rt->stream, tosend + 1)) < 0) | |
1200 | return ret; | |
1201 | } | |
1202 | ||
1203 | client_pos = rtmp_handshake_imprint_with_digest(tosend + 1, rt->encrypted); | |
1204 | if (client_pos < 0) | |
1205 | return client_pos; | |
1206 | ||
1207 | if ((ret = ffurl_write(rt->stream, tosend, | |
1208 | RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) { | |
1209 | av_log(s, AV_LOG_ERROR, "Cannot write RTMP handshake request\n"); | |
1210 | return ret; | |
1211 | } | |
1212 | ||
1213 | if ((ret = ffurl_read_complete(rt->stream, serverdata, | |
1214 | RTMP_HANDSHAKE_PACKET_SIZE + 1)) < 0) { | |
1215 | av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n"); | |
1216 | return ret; | |
1217 | } | |
1218 | ||
1219 | if ((ret = ffurl_read_complete(rt->stream, clientdata, | |
1220 | RTMP_HANDSHAKE_PACKET_SIZE)) < 0) { | |
1221 | av_log(s, AV_LOG_ERROR, "Cannot read RTMP handshake response\n"); | |
1222 | return ret; | |
1223 | } | |
1224 | ||
1225 | av_log(s, AV_LOG_DEBUG, "Type answer %d\n", serverdata[0]); | |
1226 | av_log(s, AV_LOG_DEBUG, "Server version %d.%d.%d.%d\n", | |
1227 | serverdata[5], serverdata[6], serverdata[7], serverdata[8]); | |
1228 | ||
1229 | if (rt->is_input && serverdata[5] >= 3) { | |
1230 | server_pos = rtmp_validate_digest(serverdata + 1, 772); | |
1231 | if (server_pos < 0) | |
1232 | return server_pos; | |
1233 | ||
1234 | if (!server_pos) { | |
1235 | type = 1; | |
1236 | server_pos = rtmp_validate_digest(serverdata + 1, 8); | |
1237 | if (server_pos < 0) | |
1238 | return server_pos; | |
1239 | ||
1240 | if (!server_pos) { | |
1241 | av_log(s, AV_LOG_ERROR, "Server response validating failed\n"); | |
1242 | return AVERROR(EIO); | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | /* Generate SWFVerification token (SHA256 HMAC hash of decompressed SWF, | |
1247 | * key are the last 32 bytes of the server handshake. */ | |
1248 | if (rt->swfsize) { | |
1249 | if ((ret = rtmp_calc_swf_verification(s, rt, serverdata + 1 + | |
1250 | RTMP_HANDSHAKE_PACKET_SIZE - 32)) < 0) | |
1251 | return ret; | |
1252 | } | |
1253 | ||
1254 | ret = ff_rtmp_calc_digest(tosend + 1 + client_pos, 32, 0, | |
1255 | rtmp_server_key, sizeof(rtmp_server_key), | |
1256 | digest); | |
1257 | if (ret < 0) | |
1258 | return ret; | |
1259 | ||
1260 | ret = ff_rtmp_calc_digest(clientdata, RTMP_HANDSHAKE_PACKET_SIZE - 32, | |
1261 | 0, digest, 32, signature); | |
1262 | if (ret < 0) | |
1263 | return ret; | |
1264 | ||
1265 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1266 | /* Compute the shared secret key sent by the server and initialize | |
1267 | * the RC4 encryption. */ | |
1268 | if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1, | |
1269 | tosend + 1, type)) < 0) | |
1270 | return ret; | |
1271 | ||
1272 | /* Encrypt the signature received by the server. */ | |
1273 | ff_rtmpe_encrypt_sig(rt->stream, signature, digest, serverdata[0]); | |
1274 | } | |
1275 | ||
1276 | if (memcmp(signature, clientdata + RTMP_HANDSHAKE_PACKET_SIZE - 32, 32)) { | |
1277 | av_log(s, AV_LOG_ERROR, "Signature mismatch\n"); | |
1278 | return AVERROR(EIO); | |
1279 | } | |
1280 | ||
1281 | for (i = 0; i < RTMP_HANDSHAKE_PACKET_SIZE; i++) | |
1282 | tosend[i] = av_lfg_get(&rnd) >> 24; | |
1283 | ret = ff_rtmp_calc_digest(serverdata + 1 + server_pos, 32, 0, | |
1284 | rtmp_player_key, sizeof(rtmp_player_key), | |
1285 | digest); | |
1286 | if (ret < 0) | |
1287 | return ret; | |
1288 | ||
1289 | ret = ff_rtmp_calc_digest(tosend, RTMP_HANDSHAKE_PACKET_SIZE - 32, 0, | |
1290 | digest, 32, | |
1291 | tosend + RTMP_HANDSHAKE_PACKET_SIZE - 32); | |
1292 | if (ret < 0) | |
1293 | return ret; | |
1294 | ||
1295 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1296 | /* Encrypt the signature to be send to the server. */ | |
1297 | ff_rtmpe_encrypt_sig(rt->stream, tosend + | |
1298 | RTMP_HANDSHAKE_PACKET_SIZE - 32, digest, | |
1299 | serverdata[0]); | |
1300 | } | |
1301 | ||
1302 | // write reply back to the server | |
1303 | if ((ret = ffurl_write(rt->stream, tosend, | |
1304 | RTMP_HANDSHAKE_PACKET_SIZE)) < 0) | |
1305 | return ret; | |
1306 | ||
1307 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1308 | /* Set RC4 keys for encryption and update the keystreams. */ | |
1309 | if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0) | |
1310 | return ret; | |
1311 | } | |
1312 | } else { | |
1313 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1314 | /* Compute the shared secret key sent by the server and initialize | |
1315 | * the RC4 encryption. */ | |
1316 | if ((ret = ff_rtmpe_compute_secret_key(rt->stream, serverdata + 1, | |
1317 | tosend + 1, 1)) < 0) | |
1318 | return ret; | |
1319 | ||
1320 | if (serverdata[0] == 9) { | |
1321 | /* Encrypt the signature received by the server. */ | |
1322 | ff_rtmpe_encrypt_sig(rt->stream, signature, digest, | |
1323 | serverdata[0]); | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | if ((ret = ffurl_write(rt->stream, serverdata + 1, | |
1328 | RTMP_HANDSHAKE_PACKET_SIZE)) < 0) | |
1329 | return ret; | |
1330 | ||
1331 | if (CONFIG_FFRTMPCRYPT_PROTOCOL && rt->encrypted) { | |
1332 | /* Set RC4 keys for encryption and update the keystreams. */ | |
1333 | if ((ret = ff_rtmpe_update_keystream(rt->stream)) < 0) | |
1334 | return ret; | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | static int rtmp_receive_hs_packet(RTMPContext* rt, uint32_t *first_int, | |
1342 | uint32_t *second_int, char *arraydata, | |
1343 | int size) | |
1344 | { | |
1345 | int inoutsize; | |
1346 | ||
1347 | inoutsize = ffurl_read_complete(rt->stream, arraydata, | |
1348 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1349 | if (inoutsize <= 0) | |
1350 | return AVERROR(EIO); | |
1351 | if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) { | |
1352 | av_log(rt, AV_LOG_ERROR, "Erroneous Message size %d" | |
1353 | " not following standard\n", (int)inoutsize); | |
1354 | return AVERROR(EINVAL); | |
1355 | } | |
1356 | ||
1357 | *first_int = AV_RB32(arraydata); | |
1358 | *second_int = AV_RB32(arraydata + 4); | |
1359 | return 0; | |
1360 | } | |
1361 | ||
1362 | static int rtmp_send_hs_packet(RTMPContext* rt, uint32_t first_int, | |
1363 | uint32_t second_int, char *arraydata, int size) | |
1364 | { | |
1365 | int inoutsize; | |
1366 | ||
1367 | AV_WB32(arraydata, first_int); | |
1368 | AV_WB32(arraydata + 4, second_int); | |
1369 | inoutsize = ffurl_write(rt->stream, arraydata, | |
1370 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1371 | if (inoutsize != RTMP_HANDSHAKE_PACKET_SIZE) { | |
1372 | av_log(rt, AV_LOG_ERROR, "Unable to write answer\n"); | |
1373 | return AVERROR(EIO); | |
1374 | } | |
1375 | ||
1376 | return 0; | |
1377 | } | |
1378 | ||
1379 | /** | |
1380 | * rtmp handshake server side | |
1381 | */ | |
1382 | static int rtmp_server_handshake(URLContext *s, RTMPContext *rt) | |
1383 | { | |
1384 | uint8_t buffer[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1385 | uint32_t hs_epoch; | |
1386 | uint32_t hs_my_epoch; | |
1387 | uint8_t hs_c1[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1388 | uint8_t hs_s1[RTMP_HANDSHAKE_PACKET_SIZE]; | |
1389 | uint32_t zeroes; | |
1390 | uint32_t temp = 0; | |
1391 | int randomidx = 0; | |
1392 | int inoutsize = 0; | |
1393 | int ret; | |
1394 | ||
1395 | inoutsize = ffurl_read_complete(rt->stream, buffer, 1); // Receive C0 | |
1396 | if (inoutsize <= 0) { | |
1397 | av_log(s, AV_LOG_ERROR, "Unable to read handshake\n"); | |
1398 | return AVERROR(EIO); | |
1399 | } | |
1400 | // Check Version | |
1401 | if (buffer[0] != 3) { | |
1402 | av_log(s, AV_LOG_ERROR, "RTMP protocol version mismatch\n"); | |
1403 | return AVERROR(EIO); | |
1404 | } | |
1405 | if (ffurl_write(rt->stream, buffer, 1) <= 0) { // Send S0 | |
1406 | av_log(s, AV_LOG_ERROR, | |
1407 | "Unable to write answer - RTMP S0\n"); | |
1408 | return AVERROR(EIO); | |
1409 | } | |
1410 | /* Receive C1 */ | |
1411 | ret = rtmp_receive_hs_packet(rt, &hs_epoch, &zeroes, hs_c1, | |
1412 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1413 | if (ret) { | |
1414 | av_log(s, AV_LOG_ERROR, "RTMP Handshake C1 Error\n"); | |
1415 | return ret; | |
1416 | } | |
1417 | /* Send S1 */ | |
1418 | /* By now same epoch will be sent */ | |
1419 | hs_my_epoch = hs_epoch; | |
1420 | /* Generate random */ | |
1421 | for (randomidx = 8; randomidx < (RTMP_HANDSHAKE_PACKET_SIZE); | |
1422 | randomidx += 4) | |
1423 | AV_WB32(hs_s1 + randomidx, av_get_random_seed()); | |
1424 | ||
1425 | ret = rtmp_send_hs_packet(rt, hs_my_epoch, 0, hs_s1, | |
1426 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1427 | if (ret) { | |
1428 | av_log(s, AV_LOG_ERROR, "RTMP Handshake S1 Error\n"); | |
1429 | return ret; | |
1430 | } | |
1431 | /* Send S2 */ | |
1432 | ret = rtmp_send_hs_packet(rt, hs_epoch, 0, hs_c1, | |
1433 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1434 | if (ret) { | |
1435 | av_log(s, AV_LOG_ERROR, "RTMP Handshake S2 Error\n"); | |
1436 | return ret; | |
1437 | } | |
1438 | /* Receive C2 */ | |
1439 | ret = rtmp_receive_hs_packet(rt, &temp, &zeroes, buffer, | |
1440 | RTMP_HANDSHAKE_PACKET_SIZE); | |
1441 | if (ret) { | |
1442 | av_log(s, AV_LOG_ERROR, "RTMP Handshake C2 Error\n"); | |
1443 | return ret; | |
1444 | } | |
1445 | if (temp != hs_my_epoch) | |
1446 | av_log(s, AV_LOG_WARNING, | |
1447 | "Erroneous C2 Message epoch does not match up with C1 epoch\n"); | |
1448 | if (memcmp(buffer + 8, hs_s1 + 8, | |
1449 | RTMP_HANDSHAKE_PACKET_SIZE - 8)) | |
1450 | av_log(s, AV_LOG_WARNING, | |
1451 | "Erroneous C2 Message random does not match up\n"); | |
1452 | ||
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | static int handle_chunk_size(URLContext *s, RTMPPacket *pkt) | |
1457 | { | |
1458 | RTMPContext *rt = s->priv_data; | |
1459 | int ret; | |
1460 | ||
1461 | if (pkt->size < 4) { | |
1462 | av_log(s, AV_LOG_ERROR, | |
1463 | "Too short chunk size change packet (%d)\n", | |
1464 | pkt->size); | |
1465 | return AVERROR_INVALIDDATA; | |
1466 | } | |
1467 | ||
1468 | if (!rt->is_input) { | |
1469 | /* Send the same chunk size change packet back to the server, | |
1470 | * setting the outgoing chunk size to the same as the incoming one. */ | |
1471 | if ((ret = ff_rtmp_packet_write(rt->stream, pkt, rt->out_chunk_size, | |
1472 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1])) < 0) | |
1473 | return ret; | |
1474 | rt->out_chunk_size = AV_RB32(pkt->data); | |
1475 | } | |
1476 | ||
1477 | rt->in_chunk_size = AV_RB32(pkt->data); | |
1478 | if (rt->in_chunk_size <= 0) { | |
1479 | av_log(s, AV_LOG_ERROR, "Incorrect chunk size %d\n", | |
1480 | rt->in_chunk_size); | |
1481 | return AVERROR_INVALIDDATA; | |
1482 | } | |
1483 | av_log(s, AV_LOG_DEBUG, "New incoming chunk size = %d\n", | |
1484 | rt->in_chunk_size); | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static int handle_ping(URLContext *s, RTMPPacket *pkt) | |
1490 | { | |
1491 | RTMPContext *rt = s->priv_data; | |
1492 | int t, ret; | |
1493 | ||
1494 | if (pkt->size < 2) { | |
1495 | av_log(s, AV_LOG_ERROR, "Too short ping packet (%d)\n", | |
1496 | pkt->size); | |
1497 | return AVERROR_INVALIDDATA; | |
1498 | } | |
1499 | ||
1500 | t = AV_RB16(pkt->data); | |
1501 | if (t == 6) { | |
1502 | if ((ret = gen_pong(s, rt, pkt)) < 0) | |
1503 | return ret; | |
1504 | } else if (t == 26) { | |
1505 | if (rt->swfsize) { | |
1506 | if ((ret = gen_swf_verification(s, rt)) < 0) | |
1507 | return ret; | |
1508 | } else { | |
1509 | av_log(s, AV_LOG_WARNING, "Ignoring SWFVerification request.\n"); | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | static int handle_client_bw(URLContext *s, RTMPPacket *pkt) | |
1517 | { | |
1518 | RTMPContext *rt = s->priv_data; | |
1519 | ||
1520 | if (pkt->size < 4) { | |
1521 | av_log(s, AV_LOG_ERROR, | |
1522 | "Client bandwidth report packet is less than 4 bytes long (%d)\n", | |
1523 | pkt->size); | |
1524 | return AVERROR_INVALIDDATA; | |
1525 | } | |
1526 | ||
1527 | rt->client_report_size = AV_RB32(pkt->data); | |
1528 | if (rt->client_report_size <= 0) { | |
1529 | av_log(s, AV_LOG_ERROR, "Incorrect client bandwidth %d\n", | |
1530 | rt->client_report_size); | |
1531 | return AVERROR_INVALIDDATA; | |
1532 | ||
1533 | } | |
1534 | av_log(s, AV_LOG_DEBUG, "Client bandwidth = %d\n", rt->client_report_size); | |
1535 | rt->client_report_size >>= 1; | |
1536 | ||
1537 | return 0; | |
1538 | } | |
1539 | ||
1540 | static int handle_server_bw(URLContext *s, RTMPPacket *pkt) | |
1541 | { | |
1542 | RTMPContext *rt = s->priv_data; | |
1543 | ||
1544 | if (pkt->size < 4) { | |
1545 | av_log(s, AV_LOG_ERROR, | |
1546 | "Too short server bandwidth report packet (%d)\n", | |
1547 | pkt->size); | |
1548 | return AVERROR_INVALIDDATA; | |
1549 | } | |
1550 | ||
1551 | rt->server_bw = AV_RB32(pkt->data); | |
1552 | if (rt->server_bw <= 0) { | |
1553 | av_log(s, AV_LOG_ERROR, "Incorrect server bandwidth %d\n", | |
1554 | rt->server_bw); | |
1555 | return AVERROR_INVALIDDATA; | |
1556 | } | |
1557 | av_log(s, AV_LOG_DEBUG, "Server bandwidth = %d\n", rt->server_bw); | |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | static int do_adobe_auth(RTMPContext *rt, const char *user, const char *salt, | |
1563 | const char *opaque, const char *challenge) | |
1564 | { | |
1565 | uint8_t hash[16]; | |
1566 | char hashstr[AV_BASE64_SIZE(sizeof(hash))], challenge2[10]; | |
1567 | struct AVMD5 *md5 = av_md5_alloc(); | |
1568 | if (!md5) | |
1569 | return AVERROR(ENOMEM); | |
1570 | ||
1571 | snprintf(challenge2, sizeof(challenge2), "%08x", av_get_random_seed()); | |
1572 | ||
1573 | av_md5_init(md5); | |
1574 | av_md5_update(md5, user, strlen(user)); | |
1575 | av_md5_update(md5, salt, strlen(salt)); | |
1576 | av_md5_update(md5, rt->password, strlen(rt->password)); | |
1577 | av_md5_final(md5, hash); | |
1578 | av_base64_encode(hashstr, sizeof(hashstr), hash, | |
1579 | sizeof(hash)); | |
1580 | av_md5_init(md5); | |
1581 | av_md5_update(md5, hashstr, strlen(hashstr)); | |
1582 | if (opaque) | |
1583 | av_md5_update(md5, opaque, strlen(opaque)); | |
1584 | else if (challenge) | |
1585 | av_md5_update(md5, challenge, strlen(challenge)); | |
1586 | av_md5_update(md5, challenge2, strlen(challenge2)); | |
1587 | av_md5_final(md5, hash); | |
1588 | av_base64_encode(hashstr, sizeof(hashstr), hash, | |
1589 | sizeof(hash)); | |
1590 | snprintf(rt->auth_params, sizeof(rt->auth_params), | |
1591 | "?authmod=%s&user=%s&challenge=%s&response=%s", | |
1592 | "adobe", user, challenge2, hashstr); | |
1593 | if (opaque) | |
1594 | av_strlcatf(rt->auth_params, sizeof(rt->auth_params), | |
1595 | "&opaque=%s", opaque); | |
1596 | ||
1597 | av_free(md5); | |
1598 | return 0; | |
1599 | } | |
1600 | ||
1601 | static int do_llnw_auth(RTMPContext *rt, const char *user, const char *nonce) | |
1602 | { | |
1603 | uint8_t hash[16]; | |
1604 | char hashstr1[33], hashstr2[33]; | |
1605 | const char *realm = "live"; | |
1606 | const char *method = "publish"; | |
1607 | const char *qop = "auth"; | |
1608 | const char *nc = "00000001"; | |
1609 | char cnonce[10]; | |
1610 | struct AVMD5 *md5 = av_md5_alloc(); | |
1611 | if (!md5) | |
1612 | return AVERROR(ENOMEM); | |
1613 | ||
1614 | snprintf(cnonce, sizeof(cnonce), "%08x", av_get_random_seed()); | |
1615 | ||
1616 | av_md5_init(md5); | |
1617 | av_md5_update(md5, user, strlen(user)); | |
1618 | av_md5_update(md5, ":", 1); | |
1619 | av_md5_update(md5, realm, strlen(realm)); | |
1620 | av_md5_update(md5, ":", 1); | |
1621 | av_md5_update(md5, rt->password, strlen(rt->password)); | |
1622 | av_md5_final(md5, hash); | |
1623 | ff_data_to_hex(hashstr1, hash, 16, 1); | |
1624 | hashstr1[32] = '\0'; | |
1625 | ||
1626 | av_md5_init(md5); | |
1627 | av_md5_update(md5, method, strlen(method)); | |
1628 | av_md5_update(md5, ":/", 2); | |
1629 | av_md5_update(md5, rt->app, strlen(rt->app)); | |
1630 | if (!strchr(rt->app, '/')) | |
1631 | av_md5_update(md5, "/_definst_", strlen("/_definst_")); | |
1632 | av_md5_final(md5, hash); | |
1633 | ff_data_to_hex(hashstr2, hash, 16, 1); | |
1634 | hashstr2[32] = '\0'; | |
1635 | ||
1636 | av_md5_init(md5); | |
1637 | av_md5_update(md5, hashstr1, strlen(hashstr1)); | |
1638 | av_md5_update(md5, ":", 1); | |
1639 | if (nonce) | |
1640 | av_md5_update(md5, nonce, strlen(nonce)); | |
1641 | av_md5_update(md5, ":", 1); | |
1642 | av_md5_update(md5, nc, strlen(nc)); | |
1643 | av_md5_update(md5, ":", 1); | |
1644 | av_md5_update(md5, cnonce, strlen(cnonce)); | |
1645 | av_md5_update(md5, ":", 1); | |
1646 | av_md5_update(md5, qop, strlen(qop)); | |
1647 | av_md5_update(md5, ":", 1); | |
1648 | av_md5_update(md5, hashstr2, strlen(hashstr2)); | |
1649 | av_md5_final(md5, hash); | |
1650 | ff_data_to_hex(hashstr1, hash, 16, 1); | |
1651 | ||
1652 | snprintf(rt->auth_params, sizeof(rt->auth_params), | |
1653 | "?authmod=%s&user=%s&nonce=%s&cnonce=%s&nc=%s&response=%s", | |
1654 | "llnw", user, nonce, cnonce, nc, hashstr1); | |
1655 | ||
1656 | av_free(md5); | |
1657 | return 0; | |
1658 | } | |
1659 | ||
1660 | static int handle_connect_error(URLContext *s, const char *desc) | |
1661 | { | |
1662 | RTMPContext *rt = s->priv_data; | |
1663 | char buf[300], *ptr, authmod[15]; | |
1664 | int i = 0, ret = 0; | |
1665 | const char *user = "", *salt = "", *opaque = NULL, | |
1666 | *challenge = NULL, *cptr = NULL, *nonce = NULL; | |
1667 | ||
1668 | if (!(cptr = strstr(desc, "authmod=adobe")) && | |
1669 | !(cptr = strstr(desc, "authmod=llnw"))) { | |
1670 | av_log(s, AV_LOG_ERROR, | |
1671 | "Unknown connect error (unsupported authentication method?)\n"); | |
1672 | return AVERROR_UNKNOWN; | |
1673 | } | |
1674 | cptr += strlen("authmod="); | |
1675 | while (*cptr && *cptr != ' ' && i < sizeof(authmod) - 1) | |
1676 | authmod[i++] = *cptr++; | |
1677 | authmod[i] = '\0'; | |
1678 | ||
1679 | if (!rt->username[0] || !rt->password[0]) { | |
1680 | av_log(s, AV_LOG_ERROR, "No credentials set\n"); | |
1681 | return AVERROR_UNKNOWN; | |
1682 | } | |
1683 | ||
1684 | if (strstr(desc, "?reason=authfailed")) { | |
1685 | av_log(s, AV_LOG_ERROR, "Incorrect username/password\n"); | |
1686 | return AVERROR_UNKNOWN; | |
1687 | } else if (strstr(desc, "?reason=nosuchuser")) { | |
1688 | av_log(s, AV_LOG_ERROR, "Incorrect username\n"); | |
1689 | return AVERROR_UNKNOWN; | |
1690 | } | |
1691 | ||
1692 | if (rt->auth_tried) { | |
1693 | av_log(s, AV_LOG_ERROR, "Authentication failed\n"); | |
1694 | return AVERROR_UNKNOWN; | |
1695 | } | |
1696 | ||
1697 | rt->auth_params[0] = '\0'; | |
1698 | ||
1699 | if (strstr(desc, "code=403 need auth")) { | |
1700 | snprintf(rt->auth_params, sizeof(rt->auth_params), | |
1701 | "?authmod=%s&user=%s", authmod, rt->username); | |
1702 | return 0; | |
1703 | } | |
1704 | ||
1705 | if (!(cptr = strstr(desc, "?reason=needauth"))) { | |
1706 | av_log(s, AV_LOG_ERROR, "No auth parameters found\n"); | |
1707 | return AVERROR_UNKNOWN; | |
1708 | } | |
1709 | ||
1710 | av_strlcpy(buf, cptr + 1, sizeof(buf)); | |
1711 | ptr = buf; | |
1712 | ||
1713 | while (ptr) { | |
1714 | char *next = strchr(ptr, '&'); | |
1715 | char *value = strchr(ptr, '='); | |
1716 | if (next) | |
1717 | *next++ = '\0'; | |
1718 | if (value) { | |
1719 | *value++ = '\0'; | |
1720 | if (!strcmp(ptr, "user")) { | |
1721 | user = value; | |
1722 | } else if (!strcmp(ptr, "salt")) { | |
1723 | salt = value; | |
1724 | } else if (!strcmp(ptr, "opaque")) { | |
1725 | opaque = value; | |
1726 | } else if (!strcmp(ptr, "challenge")) { | |
1727 | challenge = value; | |
1728 | } else if (!strcmp(ptr, "nonce")) { | |
1729 | nonce = value; | |
1730 | } else { | |
1731 | av_log(s, AV_LOG_INFO, "Ignoring unsupported var %s\n", ptr); | |
1732 | } | |
1733 | } else { | |
1734 | av_log(s, AV_LOG_WARNING, "Variable %s has NULL value\n", ptr); | |
1735 | } | |
1736 | ptr = next; | |
1737 | } | |
1738 | ||
1739 | if (!strcmp(authmod, "adobe")) { | |
1740 | if ((ret = do_adobe_auth(rt, user, salt, opaque, challenge)) < 0) | |
1741 | return ret; | |
1742 | } else { | |
1743 | if ((ret = do_llnw_auth(rt, user, nonce)) < 0) | |
1744 | return ret; | |
1745 | } | |
1746 | ||
1747 | rt->auth_tried = 1; | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | static int handle_invoke_error(URLContext *s, RTMPPacket *pkt) | |
1752 | { | |
1753 | RTMPContext *rt = s->priv_data; | |
1754 | const uint8_t *data_end = pkt->data + pkt->size; | |
1755 | char *tracked_method = NULL; | |
1756 | int level = AV_LOG_ERROR; | |
1757 | uint8_t tmpstr[256]; | |
1758 | int ret; | |
1759 | ||
1760 | if ((ret = find_tracked_method(s, pkt, 9, &tracked_method)) < 0) | |
1761 | return ret; | |
1762 | ||
1763 | if (!ff_amf_get_field_value(pkt->data + 9, data_end, | |
1764 | "description", tmpstr, sizeof(tmpstr))) { | |
1765 | if (tracked_method && (!strcmp(tracked_method, "_checkbw") || | |
1766 | !strcmp(tracked_method, "releaseStream") || | |
1767 | !strcmp(tracked_method, "FCSubscribe") || | |
1768 | !strcmp(tracked_method, "FCPublish"))) { | |
1769 | /* Gracefully ignore Adobe-specific historical artifact errors. */ | |
1770 | level = AV_LOG_WARNING; | |
1771 | ret = 0; | |
1772 | } else if (tracked_method && !strcmp(tracked_method, "connect")) { | |
1773 | ret = handle_connect_error(s, tmpstr); | |
1774 | if (!ret) { | |
1775 | rt->do_reconnect = 1; | |
1776 | level = AV_LOG_VERBOSE; | |
1777 | } | |
1778 | } else | |
1779 | ret = AVERROR_UNKNOWN; | |
1780 | av_log(s, level, "Server error: %s\n", tmpstr); | |
1781 | } | |
1782 | ||
1783 | av_free(tracked_method); | |
1784 | return ret; | |
1785 | } | |
1786 | ||
1787 | static int write_begin(URLContext *s) | |
1788 | { | |
1789 | RTMPContext *rt = s->priv_data; | |
1790 | PutByteContext pbc; | |
1791 | RTMPPacket spkt = { 0 }; | |
1792 | int ret; | |
1793 | ||
1794 | // Send Stream Begin 1 | |
1795 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_NETWORK_CHANNEL, | |
1796 | RTMP_PT_PING, 0, 6)) < 0) { | |
1797 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1798 | return ret; | |
1799 | } | |
1800 | ||
1801 | bytestream2_init_writer(&pbc, spkt.data, spkt.size); | |
1802 | bytestream2_put_be16(&pbc, 0); // 0 -> Stream Begin | |
1803 | bytestream2_put_be32(&pbc, rt->nb_streamid); | |
1804 | ||
1805 | ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size, | |
1806 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
1807 | ||
1808 | ff_rtmp_packet_destroy(&spkt); | |
1809 | ||
1810 | return ret; | |
1811 | } | |
1812 | ||
1813 | static int write_status(URLContext *s, RTMPPacket *pkt, | |
1814 | const char *status, const char *filename) | |
1815 | { | |
1816 | RTMPContext *rt = s->priv_data; | |
1817 | RTMPPacket spkt = { 0 }; | |
1818 | char statusmsg[128]; | |
1819 | uint8_t *pp; | |
1820 | int ret; | |
1821 | ||
1822 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL, | |
1823 | RTMP_PT_INVOKE, 0, | |
1824 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) { | |
1825 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1826 | return ret; | |
1827 | } | |
1828 | ||
1829 | pp = spkt.data; | |
1830 | spkt.extra = pkt->extra; | |
1831 | ff_amf_write_string(&pp, "onStatus"); | |
1832 | ff_amf_write_number(&pp, 0); | |
1833 | ff_amf_write_null(&pp); | |
1834 | ||
1835 | ff_amf_write_object_start(&pp); | |
1836 | ff_amf_write_field_name(&pp, "level"); | |
1837 | ff_amf_write_string(&pp, "status"); | |
1838 | ff_amf_write_field_name(&pp, "code"); | |
1839 | ff_amf_write_string(&pp, status); | |
1840 | ff_amf_write_field_name(&pp, "description"); | |
1841 | snprintf(statusmsg, sizeof(statusmsg), | |
1842 | "%s is now published", filename); | |
1843 | ff_amf_write_string(&pp, statusmsg); | |
1844 | ff_amf_write_field_name(&pp, "details"); | |
1845 | ff_amf_write_string(&pp, filename); | |
1846 | ff_amf_write_field_name(&pp, "clientid"); | |
1847 | snprintf(statusmsg, sizeof(statusmsg), "%s", LIBAVFORMAT_IDENT); | |
1848 | ff_amf_write_string(&pp, statusmsg); | |
1849 | ff_amf_write_object_end(&pp); | |
1850 | ||
1851 | spkt.size = pp - spkt.data; | |
1852 | ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size, | |
1853 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
1854 | ff_rtmp_packet_destroy(&spkt); | |
1855 | ||
1856 | return ret; | |
1857 | } | |
1858 | ||
1859 | static int send_invoke_response(URLContext *s, RTMPPacket *pkt) | |
1860 | { | |
1861 | RTMPContext *rt = s->priv_data; | |
1862 | double seqnum; | |
1863 | char filename[64]; | |
1864 | char command[64]; | |
1865 | int stringlen; | |
1866 | char *pchar; | |
1867 | const uint8_t *p = pkt->data; | |
1868 | uint8_t *pp = NULL; | |
1869 | RTMPPacket spkt = { 0 }; | |
1870 | GetByteContext gbc; | |
1871 | int ret; | |
1872 | ||
1873 | bytestream2_init(&gbc, p, pkt->size); | |
1874 | if (ff_amf_read_string(&gbc, command, sizeof(command), | |
1875 | &stringlen)) { | |
1876 | av_log(s, AV_LOG_ERROR, "Error in PT_INVOKE\n"); | |
1877 | return AVERROR_INVALIDDATA; | |
1878 | } | |
1879 | ||
1880 | ret = ff_amf_read_number(&gbc, &seqnum); | |
1881 | if (ret) | |
1882 | return ret; | |
1883 | ret = ff_amf_read_null(&gbc); | |
1884 | if (ret) | |
1885 | return ret; | |
1886 | if (!strcmp(command, "FCPublish") || | |
1887 | !strcmp(command, "publish")) { | |
1888 | ret = ff_amf_read_string(&gbc, filename, | |
1889 | sizeof(filename), &stringlen); | |
1890 | // check with url | |
1891 | if (s->filename) { | |
1892 | pchar = strrchr(s->filename, '/'); | |
1893 | if (!pchar) { | |
1894 | av_log(s, AV_LOG_WARNING, | |
1895 | "Unable to find / in url %s, bad format\n", | |
1896 | s->filename); | |
1897 | pchar = s->filename; | |
1898 | } | |
1899 | pchar++; | |
1900 | if (strcmp(pchar, filename)) | |
1901 | av_log(s, AV_LOG_WARNING, "Unexpected stream %s, expecting" | |
1902 | " %s\n", filename, pchar); | |
1903 | } | |
1904 | rt->state = STATE_RECEIVING; | |
1905 | } | |
1906 | ||
1907 | if (!strcmp(command, "FCPublish")) { | |
1908 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL, | |
1909 | RTMP_PT_INVOKE, 0, | |
1910 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) { | |
1911 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1912 | return ret; | |
1913 | } | |
1914 | pp = spkt.data; | |
1915 | ff_amf_write_string(&pp, "onFCPublish"); | |
1916 | } else if (!strcmp(command, "publish")) { | |
1917 | ret = write_begin(s); | |
1918 | if (ret < 0) | |
1919 | return ret; | |
1920 | ||
1921 | // Send onStatus(NetStream.Publish.Start) | |
1922 | return write_status(s, pkt, "NetStream.Publish.Start", | |
1923 | filename); | |
1924 | } else if (!strcmp(command, "play")) { | |
1925 | ret = write_begin(s); | |
1926 | if (ret < 0) | |
1927 | return ret; | |
1928 | rt->state = STATE_SENDING; | |
1929 | return write_status(s, pkt, "NetStream.Play.Start", | |
1930 | filename); | |
1931 | } else { | |
1932 | if ((ret = ff_rtmp_packet_create(&spkt, RTMP_SYSTEM_CHANNEL, | |
1933 | RTMP_PT_INVOKE, 0, | |
1934 | RTMP_PKTDATA_DEFAULT_SIZE)) < 0) { | |
1935 | av_log(s, AV_LOG_ERROR, "Unable to create response packet\n"); | |
1936 | return ret; | |
1937 | } | |
1938 | pp = spkt.data; | |
1939 | ff_amf_write_string(&pp, "_result"); | |
1940 | ff_amf_write_number(&pp, seqnum); | |
1941 | ff_amf_write_null(&pp); | |
1942 | if (!strcmp(command, "createStream")) { | |
1943 | rt->nb_streamid++; | |
1944 | if (rt->nb_streamid == 0 || rt->nb_streamid == 2) | |
1945 | rt->nb_streamid++; /* Values 0 and 2 are reserved */ | |
1946 | ff_amf_write_number(&pp, rt->nb_streamid); | |
1947 | /* By now we don't control which streams are removed in | |
1948 | * deleteStream. There is no stream creation control | |
1949 | * if a client creates more than 2^32 - 2 streams. */ | |
1950 | } | |
1951 | } | |
1952 | spkt.size = pp - spkt.data; | |
1953 | ret = ff_rtmp_packet_write(rt->stream, &spkt, rt->out_chunk_size, | |
1954 | &rt->prev_pkt[1], &rt->nb_prev_pkt[1]); | |
1955 | ff_rtmp_packet_destroy(&spkt); | |
1956 | return ret; | |
1957 | } | |
1958 | ||
1959 | static int handle_invoke_result(URLContext *s, RTMPPacket *pkt) | |
1960 | { | |
1961 | RTMPContext *rt = s->priv_data; | |
1962 | char *tracked_method = NULL; | |
1963 | int ret = 0; | |
1964 | ||
1965 | if ((ret = find_tracked_method(s, pkt, 10, &tracked_method)) < 0) | |
1966 | return ret; | |
1967 | ||
1968 | if (!tracked_method) { | |
1969 | /* Ignore this reply when the current method is not tracked. */ | |
1970 | return ret; | |
1971 | } | |
1972 | ||
1973 | if (!strcmp(tracked_method, "connect")) { | |
1974 | if (!rt->is_input) { | |
1975 | if ((ret = gen_release_stream(s, rt)) < 0) | |
1976 | goto fail; | |
1977 | ||
1978 | if ((ret = gen_fcpublish_stream(s, rt)) < 0) | |
1979 | goto fail; | |
1980 | } else { | |
1981 | if ((ret = gen_server_bw(s, rt)) < 0) | |
1982 | goto fail; | |
1983 | } | |
1984 | ||
1985 | if ((ret = gen_create_stream(s, rt)) < 0) | |
1986 | goto fail; | |
1987 | ||
1988 | if (rt->is_input) { | |
1989 | /* Send the FCSubscribe command when the name of live | |
1990 | * stream is defined by the user or if it's a live stream. */ | |
1991 | if (rt->subscribe) { | |
1992 | if ((ret = gen_fcsubscribe_stream(s, rt, rt->subscribe)) < 0) | |
1993 | goto fail; | |
1994 | } else if (rt->live == -1) { | |
1995 | if ((ret = gen_fcsubscribe_stream(s, rt, rt->playpath)) < 0) | |
1996 | goto fail; | |
1997 | } | |
1998 | } | |
1999 | } else if (!strcmp(tracked_method, "createStream")) { | |
2000 | //extract a number from the result | |
2001 | if (pkt->data[10] || pkt->data[19] != 5 || pkt->data[20]) { | |
2002 | av_log(s, AV_LOG_WARNING, "Unexpected reply on connect()\n"); | |
2003 | } else { | |
2004 | rt->stream_id = av_int2double(AV_RB64(pkt->data + 21)); | |
2005 | } | |
2006 | ||
2007 | if (!rt->is_input) { | |
2008 | if ((ret = gen_publish(s, rt)) < 0) | |
2009 | goto fail; | |
2010 | } else { | |
2011 | if ((ret = gen_play(s, rt)) < 0) | |
2012 | goto fail; | |
2013 | if ((ret = gen_buffer_time(s, rt)) < 0) | |
2014 | goto fail; | |
2015 | } | |
2016 | } | |
2017 | ||
2018 | fail: | |
2019 | av_free(tracked_method); | |
2020 | return ret; | |
2021 | } | |
2022 | ||
2023 | static int handle_invoke_status(URLContext *s, RTMPPacket *pkt) | |
2024 | { | |
2025 | RTMPContext *rt = s->priv_data; | |
2026 | const uint8_t *data_end = pkt->data + pkt->size; | |
2027 | const uint8_t *ptr = pkt->data + RTMP_HEADER; | |
2028 | uint8_t tmpstr[256]; | |
2029 | int i, t; | |
2030 | ||
2031 | for (i = 0; i < 2; i++) { | |
2032 | t = ff_amf_tag_size(ptr, data_end); | |
2033 | if (t < 0) | |
2034 | return 1; | |
2035 | ptr += t; | |
2036 | } | |
2037 | ||
2038 | t = ff_amf_get_field_value(ptr, data_end, "level", tmpstr, sizeof(tmpstr)); | |
2039 | if (!t && !strcmp(tmpstr, "error")) { | |
2040 | t = ff_amf_get_field_value(ptr, data_end, | |
2041 | "description", tmpstr, sizeof(tmpstr)); | |
2042 | if (t || !tmpstr[0]) | |
2043 | t = ff_amf_get_field_value(ptr, data_end, "code", | |
2044 | tmpstr, sizeof(tmpstr)); | |
2045 | if (!t) | |
2046 | av_log(s, AV_LOG_ERROR, "Server error: %s\n", tmpstr); | |
2047 | return -1; | |
2048 | } | |
2049 | ||
2050 | t = ff_amf_get_field_value(ptr, data_end, "code", tmpstr, sizeof(tmpstr)); | |
2051 | if (!t && !strcmp(tmpstr, "NetStream.Play.Start")) rt->state = STATE_PLAYING; | |
2052 | if (!t && !strcmp(tmpstr, "NetStream.Play.Stop")) rt->state = STATE_STOPPED; | |
2053 | if (!t && !strcmp(tmpstr, "NetStream.Play.UnpublishNotify")) rt->state = STATE_STOPPED; | |
2054 | if (!t && !strcmp(tmpstr, "NetStream.Publish.Start")) rt->state = STATE_PUBLISHING; | |
2055 | if (!t && !strcmp(tmpstr, "NetStream.Seek.Notify")) rt->state = STATE_PLAYING; | |
2056 | ||
2057 | return 0; | |
2058 | } | |
2059 | ||
2060 | static int handle_invoke(URLContext *s, RTMPPacket *pkt) | |
2061 | { | |
2062 | RTMPContext *rt = s->priv_data; | |
2063 | int ret = 0; | |
2064 | ||
2065 | //TODO: check for the messages sent for wrong state? | |
2066 | if (ff_amf_match_string(pkt->data, pkt->size, "_error")) { | |
2067 | if ((ret = handle_invoke_error(s, pkt)) < 0) | |
2068 | return ret; | |
2069 | } else if (ff_amf_match_string(pkt->data, pkt->size, "_result")) { | |
2070 | if ((ret = handle_invoke_result(s, pkt)) < 0) | |
2071 | return ret; | |
2072 | } else if (ff_amf_match_string(pkt->data, pkt->size, "onStatus")) { | |
2073 | if ((ret = handle_invoke_status(s, pkt)) < 0) | |
2074 | return ret; | |
2075 | } else if (ff_amf_match_string(pkt->data, pkt->size, "onBWDone")) { | |
2076 | if ((ret = gen_check_bw(s, rt)) < 0) | |
2077 | return ret; | |
2078 | } else if (ff_amf_match_string(pkt->data, pkt->size, "releaseStream") || | |
2079 | ff_amf_match_string(pkt->data, pkt->size, "FCPublish") || | |
2080 | ff_amf_match_string(pkt->data, pkt->size, "publish") || | |
2081 | ff_amf_match_string(pkt->data, pkt->size, "play") || | |
2082 | ff_amf_match_string(pkt->data, pkt->size, "_checkbw") || | |
2083 | ff_amf_match_string(pkt->data, pkt->size, "createStream")) { | |
2084 | if ((ret = send_invoke_response(s, pkt)) < 0) | |
2085 | return ret; | |
2086 | } | |
2087 | ||
2088 | return ret; | |
2089 | } | |
2090 | ||
2091 | static int update_offset(RTMPContext *rt, int size) | |
2092 | { | |
2093 | int old_flv_size; | |
2094 | ||
2095 | // generate packet header and put data into buffer for FLV demuxer | |
2096 | if (rt->flv_off < rt->flv_size) { | |
2097 | // There is old unread data in the buffer, thus append at the end | |
2098 | old_flv_size = rt->flv_size; | |
2099 | rt->flv_size += size; | |
2100 | } else { | |
2101 | // All data has been read, write the new data at the start of the buffer | |
2102 | old_flv_size = 0; | |
2103 | rt->flv_size = size; | |
2104 | rt->flv_off = 0; | |
2105 | } | |
2106 | ||
2107 | return old_flv_size; | |
2108 | } | |
2109 | ||
2110 | static int append_flv_data(RTMPContext *rt, RTMPPacket *pkt, int skip) | |
2111 | { | |
2112 | int old_flv_size, ret; | |
2113 | PutByteContext pbc; | |
2114 | const uint8_t *data = pkt->data + skip; | |
2115 | const int size = pkt->size - skip; | |
2116 | uint32_t ts = pkt->timestamp; | |
2117 | ||
2118 | if (pkt->type == RTMP_PT_AUDIO) { | |
2119 | rt->has_audio = 1; | |
2120 | } else if (pkt->type == RTMP_PT_VIDEO) { | |
2121 | rt->has_video = 1; | |
2122 | } | |
2123 | ||
2124 | old_flv_size = update_offset(rt, size + 15); | |
2125 | ||
2126 | if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) { | |
2127 | rt->flv_size = rt->flv_off = 0; | |
2128 | return ret; | |
2129 | } | |
2130 | bytestream2_init_writer(&pbc, rt->flv_data, rt->flv_size); | |
2131 | bytestream2_skip_p(&pbc, old_flv_size); | |
2132 | bytestream2_put_byte(&pbc, pkt->type); | |
2133 | bytestream2_put_be24(&pbc, size); | |
2134 | bytestream2_put_be24(&pbc, ts); | |
2135 | bytestream2_put_byte(&pbc, ts >> 24); | |
2136 | bytestream2_put_be24(&pbc, 0); | |
2137 | bytestream2_put_buffer(&pbc, data, size); | |
2138 | bytestream2_put_be32(&pbc, 0); | |
2139 | ||
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | static int handle_notify(URLContext *s, RTMPPacket *pkt) | |
2144 | { | |
2145 | RTMPContext *rt = s->priv_data; | |
2146 | uint8_t commandbuffer[64]; | |
2147 | char statusmsg[128]; | |
2148 | int stringlen, ret, skip = 0; | |
2149 | GetByteContext gbc; | |
2150 | ||
2151 | bytestream2_init(&gbc, pkt->data, pkt->size); | |
2152 | if (ff_amf_read_string(&gbc, commandbuffer, sizeof(commandbuffer), | |
2153 | &stringlen)) | |
2154 | return AVERROR_INVALIDDATA; | |
2155 | ||
2156 | if (!strcmp(commandbuffer, "onMetaData")) { | |
2157 | // metadata properties should be stored in a mixed array | |
2158 | if (bytestream2_get_byte(&gbc) == AMF_DATA_TYPE_MIXEDARRAY) { | |
2159 | // We have found a metaData Array so flv can determine the streams | |
2160 | // from this. | |
2161 | rt->received_metadata = 1; | |
2162 | // skip 32-bit max array index | |
2163 | bytestream2_skip(&gbc, 4); | |
2164 | while (bytestream2_get_bytes_left(&gbc) > 3) { | |
2165 | if (ff_amf_get_string(&gbc, statusmsg, sizeof(statusmsg), | |
2166 | &stringlen)) | |
2167 | return AVERROR_INVALIDDATA; | |
2168 | // We do not care about the content of the property (yet). | |
2169 | stringlen = ff_amf_tag_size(gbc.buffer, gbc.buffer_end); | |
2170 | if (stringlen < 0) | |
2171 | return AVERROR_INVALIDDATA; | |
2172 | bytestream2_skip(&gbc, stringlen); | |
2173 | ||
2174 | // The presence of the following properties indicates that the | |
2175 | // respective streams are present. | |
2176 | if (!strcmp(statusmsg, "videocodecid")) { | |
2177 | rt->has_video = 1; | |
2178 | } | |
2179 | if (!strcmp(statusmsg, "audiocodecid")) { | |
2180 | rt->has_audio = 1; | |
2181 | } | |
2182 | } | |
2183 | if (bytestream2_get_be24(&gbc) != AMF_END_OF_OBJECT) | |
2184 | return AVERROR_INVALIDDATA; | |
2185 | } | |
2186 | } | |
2187 | ||
2188 | // Skip the @setDataFrame string and validate it is a notification | |
2189 | if (!strcmp(commandbuffer, "@setDataFrame")) { | |
2190 | skip = gbc.buffer - pkt->data; | |
2191 | ret = ff_amf_read_string(&gbc, statusmsg, | |
2192 | sizeof(statusmsg), &stringlen); | |
2193 | if (ret < 0) | |
2194 | return AVERROR_INVALIDDATA; | |
2195 | } | |
2196 | ||
2197 | return append_flv_data(rt, pkt, skip); | |
2198 | } | |
2199 | ||
2200 | /** | |
2201 | * Parse received packet and possibly perform some action depending on | |
2202 | * the packet contents. | |
2203 | * @return 0 for no errors, negative values for serious errors which prevent | |
2204 | * further communications, positive values for uncritical errors | |
2205 | */ | |
2206 | static int rtmp_parse_result(URLContext *s, RTMPContext *rt, RTMPPacket *pkt) | |
2207 | { | |
2208 | int ret; | |
2209 | ||
2210 | #ifdef DEBUG | |
2211 | ff_rtmp_packet_dump(s, pkt); | |
2212 | #endif | |
2213 | ||
2214 | switch (pkt->type) { | |
2215 | case RTMP_PT_BYTES_READ: | |
2216 | av_dlog(s, "received bytes read report\n"); | |
2217 | break; | |
2218 | case RTMP_PT_CHUNK_SIZE: | |
2219 | if ((ret = handle_chunk_size(s, pkt)) < 0) | |
2220 | return ret; | |
2221 | break; | |
2222 | case RTMP_PT_PING: | |
2223 | if ((ret = handle_ping(s, pkt)) < 0) | |
2224 | return ret; | |
2225 | break; | |
2226 | case RTMP_PT_CLIENT_BW: | |
2227 | if ((ret = handle_client_bw(s, pkt)) < 0) | |
2228 | return ret; | |
2229 | break; | |
2230 | case RTMP_PT_SERVER_BW: | |
2231 | if ((ret = handle_server_bw(s, pkt)) < 0) | |
2232 | return ret; | |
2233 | break; | |
2234 | case RTMP_PT_INVOKE: | |
2235 | if ((ret = handle_invoke(s, pkt)) < 0) | |
2236 | return ret; | |
2237 | break; | |
2238 | case RTMP_PT_VIDEO: | |
2239 | case RTMP_PT_AUDIO: | |
2240 | case RTMP_PT_METADATA: | |
2241 | case RTMP_PT_NOTIFY: | |
2242 | /* Audio, Video and Metadata packets are parsed in get_packet() */ | |
2243 | break; | |
2244 | default: | |
2245 | av_log(s, AV_LOG_VERBOSE, "Unknown packet type received 0x%02X\n", pkt->type); | |
2246 | break; | |
2247 | } | |
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | static int handle_metadata(RTMPContext *rt, RTMPPacket *pkt) | |
2252 | { | |
2253 | int ret, old_flv_size, type; | |
2254 | const uint8_t *next; | |
2255 | uint8_t *p; | |
2256 | uint32_t size; | |
2257 | uint32_t ts, cts, pts = 0; | |
2258 | ||
2259 | old_flv_size = update_offset(rt, pkt->size); | |
2260 | ||
2261 | if ((ret = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) { | |
2262 | rt->flv_size = rt->flv_off = 0; | |
2263 | return ret; | |
2264 | } | |
2265 | ||
2266 | next = pkt->data; | |
2267 | p = rt->flv_data + old_flv_size; | |
2268 | ||
2269 | /* copy data while rewriting timestamps */ | |
2270 | ts = pkt->timestamp; | |
2271 | ||
2272 | while (next - pkt->data < pkt->size - RTMP_HEADER) { | |
2273 | type = bytestream_get_byte(&next); | |
2274 | size = bytestream_get_be24(&next); | |
2275 | cts = bytestream_get_be24(&next); | |
2276 | cts |= bytestream_get_byte(&next) << 24; | |
2277 | if (!pts) | |
2278 | pts = cts; | |
2279 | ts += cts - pts; | |
2280 | pts = cts; | |
2281 | if (size + 3 + 4 > pkt->data + pkt->size - next) | |
2282 | break; | |
2283 | bytestream_put_byte(&p, type); | |
2284 | bytestream_put_be24(&p, size); | |
2285 | bytestream_put_be24(&p, ts); | |
2286 | bytestream_put_byte(&p, ts >> 24); | |
2287 | memcpy(p, next, size + 3 + 4); | |
2288 | next += size + 3 + 4; | |
2289 | p += size + 3 + 4; | |
2290 | } | |
2291 | if (p != rt->flv_data + rt->flv_size) { | |
2292 | av_log(NULL, AV_LOG_WARNING, "Incomplete flv packets in " | |
2293 | "RTMP_PT_METADATA packet\n"); | |
2294 | rt->flv_size = p - rt->flv_data; | |
2295 | } | |
2296 | ||
2297 | return 0; | |
2298 | } | |
2299 | ||
2300 | /** | |
2301 | * Interact with the server by receiving and sending RTMP packets until | |
2302 | * there is some significant data (media data or expected status notification). | |
2303 | * | |
2304 | * @param s reading context | |
2305 | * @param for_header non-zero value tells function to work until it | |
2306 | * gets notification from the server that playing has been started, | |
2307 | * otherwise function will work until some media data is received (or | |
2308 | * an error happens) | |
2309 | * @return 0 for successful operation, negative value in case of error | |
2310 | */ | |
2311 | static int get_packet(URLContext *s, int for_header) | |
2312 | { | |
2313 | RTMPContext *rt = s->priv_data; | |
2314 | int ret; | |
2315 | ||
2316 | if (rt->state == STATE_STOPPED) | |
2317 | return AVERROR_EOF; | |
2318 | ||
2319 | for (;;) { | |
2320 | RTMPPacket rpkt = { 0 }; | |
2321 | if ((ret = ff_rtmp_packet_read(rt->stream, &rpkt, | |
2322 | rt->in_chunk_size, &rt->prev_pkt[0], | |
2323 | &rt->nb_prev_pkt[0])) <= 0) { | |
2324 | if (ret == 0) { | |
2325 | return AVERROR(EAGAIN); | |
2326 | } else { | |
2327 | return AVERROR(EIO); | |
2328 | } | |
2329 | } | |
2330 | rt->bytes_read += ret; | |
2331 | if (rt->bytes_read - rt->last_bytes_read > rt->client_report_size) { | |
2332 | av_log(s, AV_LOG_DEBUG, "Sending bytes read report\n"); | |
2333 | if ((ret = gen_bytes_read(s, rt, rpkt.timestamp + 1)) < 0) | |
2334 | return ret; | |
2335 | rt->last_bytes_read = rt->bytes_read; | |
2336 | } | |
2337 | ||
2338 | ret = rtmp_parse_result(s, rt, &rpkt); | |
2339 | ||
2340 | // At this point we must check if we are in the seek state and continue | |
2341 | // with the next packet. handle_invoke will get us out of this state | |
2342 | // when the right message is encountered | |
2343 | if (rt->state == STATE_SEEKING) { | |
2344 | ff_rtmp_packet_destroy(&rpkt); | |
2345 | // We continue, let the natural flow of things happen: | |
2346 | // AVERROR(EAGAIN) or handle_invoke gets us out of here | |
2347 | continue; | |
2348 | } | |
2349 | ||
2350 | if (ret < 0) {//serious error in current packet | |
2351 | ff_rtmp_packet_destroy(&rpkt); | |
2352 | return ret; | |
2353 | } | |
2354 | if (rt->do_reconnect && for_header) { | |
2355 | ff_rtmp_packet_destroy(&rpkt); | |
2356 | return 0; | |
2357 | } | |
2358 | if (rt->state == STATE_STOPPED) { | |
2359 | ff_rtmp_packet_destroy(&rpkt); | |
2360 | return AVERROR_EOF; | |
2361 | } | |
2362 | if (for_header && (rt->state == STATE_PLAYING || | |
2363 | rt->state == STATE_PUBLISHING || | |
2364 | rt->state == STATE_SENDING || | |
2365 | rt->state == STATE_RECEIVING)) { | |
2366 | ff_rtmp_packet_destroy(&rpkt); | |
2367 | return 0; | |
2368 | } | |
2369 | if (!rpkt.size || !rt->is_input) { | |
2370 | ff_rtmp_packet_destroy(&rpkt); | |
2371 | continue; | |
2372 | } | |
2373 | if (rpkt.type == RTMP_PT_VIDEO || rpkt.type == RTMP_PT_AUDIO) { | |
2374 | ret = append_flv_data(rt, &rpkt, 0); | |
2375 | ff_rtmp_packet_destroy(&rpkt); | |
2376 | return ret; | |
2377 | } else if (rpkt.type == RTMP_PT_NOTIFY) { | |
2378 | ret = handle_notify(s, &rpkt); | |
2379 | ff_rtmp_packet_destroy(&rpkt); | |
2380 | return ret; | |
2381 | } else if (rpkt.type == RTMP_PT_METADATA) { | |
2382 | ret = handle_metadata(rt, &rpkt); | |
2383 | ff_rtmp_packet_destroy(&rpkt); | |
2384 | return 0; | |
2385 | } | |
2386 | ff_rtmp_packet_destroy(&rpkt); | |
2387 | } | |
2388 | } | |
2389 | ||
2390 | static int rtmp_close(URLContext *h) | |
2391 | { | |
2392 | RTMPContext *rt = h->priv_data; | |
2393 | int ret = 0, i, j; | |
2394 | ||
2395 | if (!rt->is_input) { | |
2396 | rt->flv_data = NULL; | |
2397 | if (rt->out_pkt.size) | |
2398 | ff_rtmp_packet_destroy(&rt->out_pkt); | |
2399 | if (rt->state > STATE_FCPUBLISH) | |
2400 | ret = gen_fcunpublish_stream(h, rt); | |
2401 | } | |
2402 | if (rt->state > STATE_HANDSHAKED) | |
2403 | ret = gen_delete_stream(h, rt); | |
2404 | for (i = 0; i < 2; i++) { | |
2405 | for (j = 0; j < rt->nb_prev_pkt[i]; j++) | |
2406 | ff_rtmp_packet_destroy(&rt->prev_pkt[i][j]); | |
2407 | av_freep(&rt->prev_pkt[i]); | |
2408 | } | |
2409 | ||
2410 | free_tracked_methods(rt); | |
2411 | av_freep(&rt->flv_data); | |
2412 | ffurl_close(rt->stream); | |
2413 | return ret; | |
2414 | } | |
2415 | ||
2416 | /** | |
2417 | * Open RTMP connection and verify that the stream can be played. | |
2418 | * | |
2419 | * URL syntax: rtmp://server[:port][/app][/playpath] | |
2420 | * where 'app' is first one or two directories in the path | |
2421 | * (e.g. /ondemand/, /flash/live/, etc.) | |
2422 | * and 'playpath' is a file name (the rest of the path, | |
2423 | * may be prefixed with "mp4:") | |
2424 | */ | |
2425 | static int rtmp_open(URLContext *s, const char *uri, int flags) | |
2426 | { | |
2427 | RTMPContext *rt = s->priv_data; | |
2428 | char proto[8], hostname[256], path[1024], auth[100], *fname; | |
2429 | char *old_app, *qmark, fname_buffer[1024]; | |
2430 | uint8_t buf[2048]; | |
2431 | int port; | |
2432 | AVDictionary *opts = NULL; | |
2433 | int ret; | |
2434 | ||
2435 | if (rt->listen_timeout > 0) | |
2436 | rt->listen = 1; | |
2437 | ||
2438 | rt->is_input = !(flags & AVIO_FLAG_WRITE); | |
2439 | ||
2440 | av_url_split(proto, sizeof(proto), auth, sizeof(auth), | |
2441 | hostname, sizeof(hostname), &port, | |
2442 | path, sizeof(path), s->filename); | |
2443 | ||
2444 | if (strchr(path, ' ')) { | |
2445 | av_log(s, AV_LOG_WARNING, | |
2446 | "Detected librtmp style URL parameters, these aren't supported " | |
2447 | "by the libavformat internal RTMP handler currently enabled. " | |
2448 | "See the documentation for the correct way to pass parameters.\n"); | |
2449 | } | |
2450 | ||
2451 | if (auth[0]) { | |
2452 | char *ptr = strchr(auth, ':'); | |
2453 | if (ptr) { | |
2454 | *ptr = '\0'; | |
2455 | av_strlcpy(rt->username, auth, sizeof(rt->username)); | |
2456 | av_strlcpy(rt->password, ptr + 1, sizeof(rt->password)); | |
2457 | } | |
2458 | } | |
2459 | ||
2460 | if (rt->listen && strcmp(proto, "rtmp")) { | |
2461 | av_log(s, AV_LOG_ERROR, "rtmp_listen not available for %s\n", | |
2462 | proto); | |
2463 | return AVERROR(EINVAL); | |
2464 | } | |
2465 | if (!strcmp(proto, "rtmpt") || !strcmp(proto, "rtmpts")) { | |
2466 | if (!strcmp(proto, "rtmpts")) | |
2467 | av_dict_set(&opts, "ffrtmphttp_tls", "1", 1); | |
2468 | ||
2469 | /* open the http tunneling connection */ | |
2470 | ff_url_join(buf, sizeof(buf), "ffrtmphttp", NULL, hostname, port, NULL); | |
2471 | } else if (!strcmp(proto, "rtmps")) { | |
2472 | /* open the tls connection */ | |
2473 | if (port < 0) | |
2474 | port = RTMPS_DEFAULT_PORT; | |
2475 | ff_url_join(buf, sizeof(buf), "tls", NULL, hostname, port, NULL); | |
2476 | } else if (!strcmp(proto, "rtmpe") || (!strcmp(proto, "rtmpte"))) { | |
2477 | if (!strcmp(proto, "rtmpte")) | |
2478 | av_dict_set(&opts, "ffrtmpcrypt_tunneling", "1", 1); | |
2479 | ||
2480 | /* open the encrypted connection */ | |
2481 | ff_url_join(buf, sizeof(buf), "ffrtmpcrypt", NULL, hostname, port, NULL); | |
2482 | rt->encrypted = 1; | |
2483 | } else { | |
2484 | /* open the tcp connection */ | |
2485 | if (port < 0) | |
2486 | port = RTMP_DEFAULT_PORT; | |
2487 | if (rt->listen) | |
2488 | ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, | |
2489 | "?listen&listen_timeout=%d", | |
2490 | rt->listen_timeout * 1000); | |
2491 | else | |
2492 | ff_url_join(buf, sizeof(buf), "tcp", NULL, hostname, port, NULL); | |
2493 | } | |
2494 | ||
2495 | reconnect: | |
2496 | if ((ret = ffurl_open(&rt->stream, buf, AVIO_FLAG_READ_WRITE, | |
2497 | &s->interrupt_callback, &opts)) < 0) { | |
2498 | av_log(s , AV_LOG_ERROR, "Cannot open connection %s\n", buf); | |
2499 | goto fail; | |
2500 | } | |
2501 | ||
2502 | if (rt->swfverify) { | |
2503 | if ((ret = rtmp_calc_swfhash(s)) < 0) | |
2504 | goto fail; | |
2505 | } | |
2506 | ||
2507 | rt->state = STATE_START; | |
2508 | if (!rt->listen && (ret = rtmp_handshake(s, rt)) < 0) | |
2509 | goto fail; | |
2510 | if (rt->listen && (ret = rtmp_server_handshake(s, rt)) < 0) | |
2511 | goto fail; | |
2512 | ||
2513 | rt->out_chunk_size = 128; | |
2514 | rt->in_chunk_size = 128; // Probably overwritten later | |
2515 | rt->state = STATE_HANDSHAKED; | |
2516 | ||
2517 | // Keep the application name when it has been defined by the user. | |
2518 | old_app = rt->app; | |
2519 | ||
2520 | rt->app = av_malloc(APP_MAX_LENGTH); | |
2521 | if (!rt->app) { | |
2522 | ret = AVERROR(ENOMEM); | |
2523 | goto fail; | |
2524 | } | |
2525 | ||
2526 | //extract "app" part from path | |
2527 | qmark = strchr(path, '?'); | |
2528 | if (qmark && strstr(qmark, "slist=")) { | |
2529 | char* amp; | |
2530 | // After slist we have the playpath, before the params, the app | |
2531 | av_strlcpy(rt->app, path + 1, FFMIN(qmark - path, APP_MAX_LENGTH)); | |
2532 | fname = strstr(path, "slist=") + 6; | |
2533 | // Strip any further query parameters from fname | |
2534 | amp = strchr(fname, '&'); | |
2535 | if (amp) { | |
2536 | av_strlcpy(fname_buffer, fname, FFMIN(amp - fname + 1, | |
2537 | sizeof(fname_buffer))); | |
2538 | fname = fname_buffer; | |
2539 | } | |
2540 | } else if (!strncmp(path, "/ondemand/", 10)) { | |
2541 | fname = path + 10; | |
2542 | memcpy(rt->app, "ondemand", 9); | |
2543 | } else { | |
2544 | char *next = *path ? path + 1 : path; | |
2545 | char *p = strchr(next, '/'); | |
2546 | if (!p) { | |
2547 | fname = next; | |
2548 | rt->app[0] = '\0'; | |
2549 | } else { | |
2550 | // make sure we do not mismatch a playpath for an application instance | |
2551 | char *c = strchr(p + 1, ':'); | |
2552 | fname = strchr(p + 1, '/'); | |
2553 | if (!fname || (c && c < fname)) { | |
2554 | fname = p + 1; | |
2555 | av_strlcpy(rt->app, path + 1, FFMIN(p - path, APP_MAX_LENGTH)); | |
2556 | } else { | |
2557 | fname++; | |
2558 | av_strlcpy(rt->app, path + 1, FFMIN(fname - path - 1, APP_MAX_LENGTH)); | |
2559 | } | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | if (old_app) { | |
2564 | // The name of application has been defined by the user, override it. | |
2565 | if (strlen(old_app) >= APP_MAX_LENGTH) { | |
2566 | ret = AVERROR(EINVAL); | |
2567 | goto fail; | |
2568 | } | |
2569 | av_free(rt->app); | |
2570 | rt->app = old_app; | |
2571 | } | |
2572 | ||
2573 | if (!rt->playpath) { | |
2574 | int len = strlen(fname); | |
2575 | ||
2576 | rt->playpath = av_malloc(PLAYPATH_MAX_LENGTH); | |
2577 | if (!rt->playpath) { | |
2578 | ret = AVERROR(ENOMEM); | |
2579 | goto fail; | |
2580 | } | |
2581 | ||
2582 | if (!strchr(fname, ':') && len >= 4 && | |
2583 | (!strcmp(fname + len - 4, ".f4v") || | |
2584 | !strcmp(fname + len - 4, ".mp4"))) { | |
2585 | memcpy(rt->playpath, "mp4:", 5); | |
2586 | } else { | |
2587 | if (len >= 4 && !strcmp(fname + len - 4, ".flv")) | |
2588 | fname[len - 4] = '\0'; | |
2589 | rt->playpath[0] = 0; | |
2590 | } | |
2591 | av_strlcat(rt->playpath, fname, PLAYPATH_MAX_LENGTH); | |
2592 | } | |
2593 | ||
2594 | if (!rt->tcurl) { | |
2595 | rt->tcurl = av_malloc(TCURL_MAX_LENGTH); | |
2596 | if (!rt->tcurl) { | |
2597 | ret = AVERROR(ENOMEM); | |
2598 | goto fail; | |
2599 | } | |
2600 | ff_url_join(rt->tcurl, TCURL_MAX_LENGTH, proto, NULL, hostname, | |
2601 | port, "/%s", rt->app); | |
2602 | } | |
2603 | ||
2604 | if (!rt->flashver) { | |
2605 | rt->flashver = av_malloc(FLASHVER_MAX_LENGTH); | |
2606 | if (!rt->flashver) { | |
2607 | ret = AVERROR(ENOMEM); | |
2608 | goto fail; | |
2609 | } | |
2610 | if (rt->is_input) { | |
2611 | snprintf(rt->flashver, FLASHVER_MAX_LENGTH, "%s %d,%d,%d,%d", | |
2612 | RTMP_CLIENT_PLATFORM, RTMP_CLIENT_VER1, RTMP_CLIENT_VER2, | |
2613 | RTMP_CLIENT_VER3, RTMP_CLIENT_VER4); | |
2614 | } else { | |
2615 | snprintf(rt->flashver, FLASHVER_MAX_LENGTH, | |
2616 | "FMLE/3.0 (compatible; %s)", LIBAVFORMAT_IDENT); | |
2617 | } | |
2618 | } | |
2619 | ||
2620 | rt->client_report_size = 1048576; | |
2621 | rt->bytes_read = 0; | |
2622 | rt->has_audio = 0; | |
2623 | rt->has_video = 0; | |
2624 | rt->received_metadata = 0; | |
2625 | rt->last_bytes_read = 0; | |
2626 | rt->server_bw = 2500000; | |
2627 | ||
2628 | av_log(s, AV_LOG_DEBUG, "Proto = %s, path = %s, app = %s, fname = %s\n", | |
2629 | proto, path, rt->app, rt->playpath); | |
2630 | if (!rt->listen) { | |
2631 | if ((ret = gen_connect(s, rt)) < 0) | |
2632 | goto fail; | |
2633 | } else { | |
2634 | if ((ret = read_connect(s, s->priv_data)) < 0) | |
2635 | goto fail; | |
2636 | } | |
2637 | ||
2638 | do { | |
2639 | ret = get_packet(s, 1); | |
2640 | } while (ret == AVERROR(EAGAIN)); | |
2641 | if (ret < 0) | |
2642 | goto fail; | |
2643 | ||
2644 | if (rt->do_reconnect) { | |
2645 | int i; | |
2646 | ffurl_close(rt->stream); | |
2647 | rt->stream = NULL; | |
2648 | rt->do_reconnect = 0; | |
2649 | rt->nb_invokes = 0; | |
2650 | for (i = 0; i < 2; i++) | |
2651 | memset(rt->prev_pkt[i], 0, | |
2652 | sizeof(**rt->prev_pkt) * rt->nb_prev_pkt[i]); | |
2653 | free_tracked_methods(rt); | |
2654 | goto reconnect; | |
2655 | } | |
2656 | ||
2657 | if (rt->is_input) { | |
2658 | int err; | |
2659 | // generate FLV header for demuxer | |
2660 | rt->flv_size = 13; | |
2661 | if ((err = av_reallocp(&rt->flv_data, rt->flv_size)) < 0) | |
2662 | return err; | |
2663 | rt->flv_off = 0; | |
2664 | memcpy(rt->flv_data, "FLV\1\0\0\0\0\011\0\0\0\0", rt->flv_size); | |
2665 | ||
2666 | // Read packets until we reach the first A/V packet or read metadata. | |
2667 | // If there was a metadata package in front of the A/V packets, we can | |
2668 | // build the FLV header from this. If we do not receive any metadata, | |
2669 | // the FLV decoder will allocate the needed streams when their first | |
2670 | // audio or video packet arrives. | |
2671 | while (!rt->has_audio && !rt->has_video && !rt->received_metadata) { | |
2672 | if ((ret = get_packet(s, 0)) < 0) | |
2673 | return ret; | |
2674 | } | |
2675 | ||
2676 | // Either after we have read the metadata or (if there is none) the | |
2677 | // first packet of an A/V stream, we have a better knowledge about the | |
2678 | // streams, so set the FLV header accordingly. | |
2679 | if (rt->has_audio) { | |
2680 | rt->flv_data[4] |= FLV_HEADER_FLAG_HASAUDIO; | |
2681 | } | |
2682 | if (rt->has_video) { | |
2683 | rt->flv_data[4] |= FLV_HEADER_FLAG_HASVIDEO; | |
2684 | } | |
2685 | } else { | |
2686 | rt->flv_size = 0; | |
2687 | rt->flv_data = NULL; | |
2688 | rt->flv_off = 0; | |
2689 | rt->skip_bytes = 13; | |
2690 | } | |
2691 | ||
2692 | s->max_packet_size = rt->stream->max_packet_size; | |
2693 | s->is_streamed = 1; | |
2694 | return 0; | |
2695 | ||
2696 | fail: | |
2697 | av_dict_free(&opts); | |
2698 | rtmp_close(s); | |
2699 | return ret; | |
2700 | } | |
2701 | ||
2702 | static int rtmp_read(URLContext *s, uint8_t *buf, int size) | |
2703 | { | |
2704 | RTMPContext *rt = s->priv_data; | |
2705 | int orig_size = size; | |
2706 | int ret; | |
2707 | ||
2708 | while (size > 0) { | |
2709 | int data_left = rt->flv_size - rt->flv_off; | |
2710 | ||
2711 | if (data_left >= size) { | |
2712 | memcpy(buf, rt->flv_data + rt->flv_off, size); | |
2713 | rt->flv_off += size; | |
2714 | return orig_size; | |
2715 | } | |
2716 | if (data_left > 0) { | |
2717 | memcpy(buf, rt->flv_data + rt->flv_off, data_left); | |
2718 | buf += data_left; | |
2719 | size -= data_left; | |
2720 | rt->flv_off = rt->flv_size; | |
2721 | return data_left; | |
2722 | } | |
2723 | if ((ret = get_packet(s, 0)) < 0) | |
2724 | return ret; | |
2725 | } | |
2726 | return orig_size; | |
2727 | } | |
2728 | ||
2729 | static int64_t rtmp_seek(URLContext *s, int stream_index, int64_t timestamp, | |
2730 | int flags) | |
2731 | { | |
2732 | RTMPContext *rt = s->priv_data; | |
2733 | int ret; | |
2734 | av_log(s, AV_LOG_DEBUG, | |
2735 | "Seek on stream index %d at timestamp %"PRId64" with flags %08x\n", | |
2736 | stream_index, timestamp, flags); | |
2737 | if ((ret = gen_seek(s, rt, timestamp)) < 0) { | |
2738 | av_log(s, AV_LOG_ERROR, | |
2739 | "Unable to send seek command on stream index %d at timestamp " | |
2740 | "%"PRId64" with flags %08x\n", | |
2741 | stream_index, timestamp, flags); | |
2742 | return ret; | |
2743 | } | |
2744 | rt->flv_off = rt->flv_size; | |
2745 | rt->state = STATE_SEEKING; | |
2746 | return timestamp; | |
2747 | } | |
2748 | ||
2749 | static int rtmp_write(URLContext *s, const uint8_t *buf, int size) | |
2750 | { | |
2751 | RTMPContext *rt = s->priv_data; | |
2752 | int size_temp = size; | |
2753 | int pktsize, pkttype; | |
2754 | uint32_t ts; | |
2755 | const uint8_t *buf_temp = buf; | |
2756 | uint8_t c; | |
2757 | int ret; | |
2758 | ||
2759 | do { | |
2760 | if (rt->skip_bytes) { | |
2761 | int skip = FFMIN(rt->skip_bytes, size_temp); | |
2762 | buf_temp += skip; | |
2763 | size_temp -= skip; | |
2764 | rt->skip_bytes -= skip; | |
2765 | continue; | |
2766 | } | |
2767 | ||
2768 | if (rt->flv_header_bytes < RTMP_HEADER) { | |
2769 | const uint8_t *header = rt->flv_header; | |
2770 | int copy = FFMIN(RTMP_HEADER - rt->flv_header_bytes, size_temp); | |
2771 | int channel = RTMP_AUDIO_CHANNEL; | |
2772 | bytestream_get_buffer(&buf_temp, rt->flv_header + rt->flv_header_bytes, copy); | |
2773 | rt->flv_header_bytes += copy; | |
2774 | size_temp -= copy; | |
2775 | if (rt->flv_header_bytes < RTMP_HEADER) | |
2776 | break; | |
2777 | ||
2778 | pkttype = bytestream_get_byte(&header); | |
2779 | pktsize = bytestream_get_be24(&header); | |
2780 | ts = bytestream_get_be24(&header); | |
2781 | ts |= bytestream_get_byte(&header) << 24; | |
2782 | bytestream_get_be24(&header); | |
2783 | rt->flv_size = pktsize; | |
2784 | ||
2785 | if (pkttype == RTMP_PT_VIDEO) | |
2786 | channel = RTMP_VIDEO_CHANNEL; | |
2787 | ||
2788 | //force 12bytes header | |
2789 | if (((pkttype == RTMP_PT_VIDEO || pkttype == RTMP_PT_AUDIO) && ts == 0) || | |
2790 | pkttype == RTMP_PT_NOTIFY) { | |
2791 | if (pkttype == RTMP_PT_NOTIFY) | |
2792 | pktsize += 16; | |
2793 | if ((ret = ff_rtmp_check_alloc_array(&rt->prev_pkt[1], | |
2794 | &rt->nb_prev_pkt[1], | |
2795 | channel)) < 0) | |
2796 | return ret; | |
2797 | rt->prev_pkt[1][channel].channel_id = 0; | |
2798 | } | |
2799 | ||
2800 | //this can be a big packet, it's better to send it right here | |
2801 | if ((ret = ff_rtmp_packet_create(&rt->out_pkt, channel, | |
2802 | pkttype, ts, pktsize)) < 0) | |
2803 | return ret; | |
2804 | ||
2805 | rt->out_pkt.extra = rt->stream_id; | |
2806 | rt->flv_data = rt->out_pkt.data; | |
2807 | ||
2808 | if (pkttype == RTMP_PT_NOTIFY) | |
2809 | ff_amf_write_string(&rt->flv_data, "@setDataFrame"); | |
2810 | } | |
2811 | ||
2812 | if (rt->flv_size - rt->flv_off > size_temp) { | |
2813 | bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, size_temp); | |
2814 | rt->flv_off += size_temp; | |
2815 | size_temp = 0; | |
2816 | } else { | |
2817 | bytestream_get_buffer(&buf_temp, rt->flv_data + rt->flv_off, rt->flv_size - rt->flv_off); | |
2818 | size_temp -= rt->flv_size - rt->flv_off; | |
2819 | rt->flv_off += rt->flv_size - rt->flv_off; | |
2820 | } | |
2821 | ||
2822 | if (rt->flv_off == rt->flv_size) { | |
2823 | rt->skip_bytes = 4; | |
2824 | ||
2825 | if ((ret = rtmp_send_packet(rt, &rt->out_pkt, 0)) < 0) | |
2826 | return ret; | |
2827 | rt->flv_size = 0; | |
2828 | rt->flv_off = 0; | |
2829 | rt->flv_header_bytes = 0; | |
2830 | rt->flv_nb_packets++; | |
2831 | } | |
2832 | } while (buf_temp - buf < size); | |
2833 | ||
2834 | if (rt->flv_nb_packets < rt->flush_interval) | |
2835 | return size; | |
2836 | rt->flv_nb_packets = 0; | |
2837 | ||
2838 | /* set stream into nonblocking mode */ | |
2839 | rt->stream->flags |= AVIO_FLAG_NONBLOCK; | |
2840 | ||
2841 | /* try to read one byte from the stream */ | |
2842 | ret = ffurl_read(rt->stream, &c, 1); | |
2843 | ||
2844 | /* switch the stream back into blocking mode */ | |
2845 | rt->stream->flags &= ~AVIO_FLAG_NONBLOCK; | |
2846 | ||
2847 | if (ret == AVERROR(EAGAIN)) { | |
2848 | /* no incoming data to handle */ | |
2849 | return size; | |
2850 | } else if (ret < 0) { | |
2851 | return ret; | |
2852 | } else if (ret == 1) { | |
2853 | RTMPPacket rpkt = { 0 }; | |
2854 | ||
2855 | if ((ret = ff_rtmp_packet_read_internal(rt->stream, &rpkt, | |
2856 | rt->in_chunk_size, | |
2857 | &rt->prev_pkt[0], | |
2858 | &rt->nb_prev_pkt[0], c)) <= 0) | |
2859 | return ret; | |
2860 | ||
2861 | if ((ret = rtmp_parse_result(s, rt, &rpkt)) < 0) | |
2862 | return ret; | |
2863 | ||
2864 | ff_rtmp_packet_destroy(&rpkt); | |
2865 | } | |
2866 | ||
2867 | return size; | |
2868 | } | |
2869 | ||
2870 | #define OFFSET(x) offsetof(RTMPContext, x) | |
2871 | #define DEC AV_OPT_FLAG_DECODING_PARAM | |
2872 | #define ENC AV_OPT_FLAG_ENCODING_PARAM | |
2873 | ||
2874 | static const AVOption rtmp_options[] = { | |
2875 | {"rtmp_app", "Name of application to connect to on the RTMP server", OFFSET(app), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC}, | |
2876 | {"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}, | |
2877 | {"rtmp_conn", "Append arbitrary AMF data to the Connect message", OFFSET(conn), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC}, | |
2878 | {"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}, | |
2879 | {"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}, | |
2880 | {"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"}, | |
2881 | {"any", "both", 0, AV_OPT_TYPE_CONST, {.i64 = -2}, 0, 0, DEC, "rtmp_live"}, | |
2882 | {"live", "live stream", 0, AV_OPT_TYPE_CONST, {.i64 = -1}, 0, 0, DEC, "rtmp_live"}, | |
2883 | {"recorded", "recorded stream", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, DEC, "rtmp_live"}, | |
2884 | {"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}, | |
2885 | {"rtmp_playpath", "Stream identifier to play or to publish", OFFSET(playpath), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC|ENC}, | |
2886 | {"rtmp_subscribe", "Name of live stream to subscribe to. Defaults to rtmp_playpath.", OFFSET(subscribe), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC}, | |
2887 | {"rtmp_swfhash", "SHA256 hash of the decompressed SWF file (32 bytes).", OFFSET(swfhash), AV_OPT_TYPE_BINARY, .flags = DEC}, | |
2888 | {"rtmp_swfsize", "Size of the decompressed SWF file, required for SWFVerification.", OFFSET(swfsize), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC}, | |
2889 | {"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}, | |
2890 | {"rtmp_swfverify", "URL to player swf file, compute hash/size automatically.", OFFSET(swfverify), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, DEC}, | |
2891 | {"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}, | |
2892 | {"rtmp_listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtmp_listen" }, | |
2893 | {"listen", "Listen for incoming rtmp connections", OFFSET(listen), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtmp_listen" }, | |
2894 | {"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" }, | |
2895 | { NULL }, | |
2896 | }; | |
2897 | ||
2898 | #define RTMP_PROTOCOL(flavor) \ | |
2899 | static const AVClass flavor##_class = { \ | |
2900 | .class_name = #flavor, \ | |
2901 | .item_name = av_default_item_name, \ | |
2902 | .option = rtmp_options, \ | |
2903 | .version = LIBAVUTIL_VERSION_INT, \ | |
2904 | }; \ | |
2905 | \ | |
2906 | URLProtocol ff_##flavor##_protocol = { \ | |
2907 | .name = #flavor, \ | |
2908 | .url_open = rtmp_open, \ | |
2909 | .url_read = rtmp_read, \ | |
2910 | .url_read_seek = rtmp_seek, \ | |
2911 | .url_write = rtmp_write, \ | |
2912 | .url_close = rtmp_close, \ | |
2913 | .priv_data_size = sizeof(RTMPContext), \ | |
2914 | .flags = URL_PROTOCOL_FLAG_NETWORK, \ | |
2915 | .priv_data_class= &flavor##_class, \ | |
2916 | }; | |
2917 | ||
2918 | ||
2919 | RTMP_PROTOCOL(rtmp) | |
2920 | RTMP_PROTOCOL(rtmpe) | |
2921 | RTMP_PROTOCOL(rtmps) | |
2922 | RTMP_PROTOCOL(rtmpt) | |
2923 | RTMP_PROTOCOL(rtmpte) | |
2924 | RTMP_PROTOCOL(rtmpts) |