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1 | /* | |
2 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
6 | * FFmpeg is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * FFmpeg is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with FFmpeg; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | /** | |
22 | * @file | |
23 | * multiple format streaming server based on the FFmpeg libraries | |
24 | */ | |
25 | ||
26 | #include "config.h" | |
27 | #if !HAVE_CLOSESOCKET | |
28 | #define closesocket close | |
29 | #endif | |
30 | #include <string.h> | |
31 | #include <stdlib.h> | |
32 | #include <stdio.h> | |
33 | #include "libavformat/avformat.h" | |
34 | // FIXME those are internal headers, ffserver _really_ shouldn't use them | |
35 | #include "libavformat/ffm.h" | |
36 | #include "libavformat/network.h" | |
37 | #include "libavformat/os_support.h" | |
38 | #include "libavformat/rtpdec.h" | |
39 | #include "libavformat/rtpproto.h" | |
40 | #include "libavformat/rtsp.h" | |
41 | #include "libavformat/rtspcodes.h" | |
42 | #include "libavformat/avio_internal.h" | |
43 | #include "libavformat/internal.h" | |
44 | #include "libavformat/url.h" | |
45 | ||
46 | #include "libavutil/avassert.h" | |
47 | #include "libavutil/avstring.h" | |
48 | #include "libavutil/lfg.h" | |
49 | #include "libavutil/dict.h" | |
50 | #include "libavutil/intreadwrite.h" | |
51 | #include "libavutil/mathematics.h" | |
52 | #include "libavutil/random_seed.h" | |
53 | #include "libavutil/parseutils.h" | |
54 | #include "libavutil/opt.h" | |
55 | #include "libavutil/time.h" | |
56 | ||
57 | #include <stdarg.h> | |
58 | #if HAVE_UNISTD_H | |
59 | #include <unistd.h> | |
60 | #endif | |
61 | #include <fcntl.h> | |
62 | #include <sys/ioctl.h> | |
63 | #if HAVE_POLL_H | |
64 | #include <poll.h> | |
65 | #endif | |
66 | #include <errno.h> | |
67 | #include <time.h> | |
68 | #include <sys/wait.h> | |
69 | #include <signal.h> | |
70 | ||
71 | #include "cmdutils.h" | |
72 | #include "ffserver_config.h" | |
73 | ||
74 | const char program_name[] = "ffserver"; | |
75 | const int program_birth_year = 2000; | |
76 | ||
77 | static const OptionDef options[]; | |
78 | ||
79 | enum HTTPState { | |
80 | HTTPSTATE_WAIT_REQUEST, | |
81 | HTTPSTATE_SEND_HEADER, | |
82 | HTTPSTATE_SEND_DATA_HEADER, | |
83 | HTTPSTATE_SEND_DATA, /* sending TCP or UDP data */ | |
84 | HTTPSTATE_SEND_DATA_TRAILER, | |
85 | HTTPSTATE_RECEIVE_DATA, | |
86 | HTTPSTATE_WAIT_FEED, /* wait for data from the feed */ | |
87 | HTTPSTATE_READY, | |
88 | ||
89 | RTSPSTATE_WAIT_REQUEST, | |
90 | RTSPSTATE_SEND_REPLY, | |
91 | RTSPSTATE_SEND_PACKET, | |
92 | }; | |
93 | ||
94 | static const char * const http_state[] = { | |
95 | "HTTP_WAIT_REQUEST", | |
96 | "HTTP_SEND_HEADER", | |
97 | ||
98 | "SEND_DATA_HEADER", | |
99 | "SEND_DATA", | |
100 | "SEND_DATA_TRAILER", | |
101 | "RECEIVE_DATA", | |
102 | "WAIT_FEED", | |
103 | "READY", | |
104 | ||
105 | "RTSP_WAIT_REQUEST", | |
106 | "RTSP_SEND_REPLY", | |
107 | "RTSP_SEND_PACKET", | |
108 | }; | |
109 | ||
110 | #define IOBUFFER_INIT_SIZE 8192 | |
111 | ||
112 | /* timeouts are in ms */ | |
113 | #define HTTP_REQUEST_TIMEOUT (15 * 1000) | |
114 | #define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000) | |
115 | ||
116 | #define SYNC_TIMEOUT (10 * 1000) | |
117 | ||
118 | typedef struct RTSPActionServerSetup { | |
119 | uint32_t ipaddr; | |
120 | char transport_option[512]; | |
121 | } RTSPActionServerSetup; | |
122 | ||
123 | typedef struct { | |
124 | int64_t count1, count2; | |
125 | int64_t time1, time2; | |
126 | } DataRateData; | |
127 | ||
128 | /* context associated with one connection */ | |
129 | typedef struct HTTPContext { | |
130 | enum HTTPState state; | |
131 | int fd; /* socket file descriptor */ | |
132 | struct sockaddr_in from_addr; /* origin */ | |
133 | struct pollfd *poll_entry; /* used when polling */ | |
134 | int64_t timeout; | |
135 | uint8_t *buffer_ptr, *buffer_end; | |
136 | int http_error; | |
137 | int post; | |
138 | int chunked_encoding; | |
139 | int chunk_size; /* 0 if it needs to be read */ | |
140 | struct HTTPContext *next; | |
141 | int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */ | |
142 | int64_t data_count; | |
143 | /* feed input */ | |
144 | int feed_fd; | |
145 | /* input format handling */ | |
146 | AVFormatContext *fmt_in; | |
147 | int64_t start_time; /* In milliseconds - this wraps fairly often */ | |
148 | int64_t first_pts; /* initial pts value */ | |
149 | int64_t cur_pts; /* current pts value from the stream in us */ | |
150 | int64_t cur_frame_duration; /* duration of the current frame in us */ | |
151 | int cur_frame_bytes; /* output frame size, needed to compute | |
152 | the time at which we send each | |
153 | packet */ | |
154 | int pts_stream_index; /* stream we choose as clock reference */ | |
155 | int64_t cur_clock; /* current clock reference value in us */ | |
156 | /* output format handling */ | |
157 | struct FFServerStream *stream; | |
158 | /* -1 is invalid stream */ | |
159 | int feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */ | |
160 | int switch_feed_streams[FFSERVER_MAX_STREAMS]; /* index of streams in the feed */ | |
161 | int switch_pending; | |
162 | AVFormatContext fmt_ctx; /* instance of FFServerStream for one user */ | |
163 | int last_packet_sent; /* true if last data packet was sent */ | |
164 | int suppress_log; | |
165 | DataRateData datarate; | |
166 | int wmp_client_id; | |
167 | char protocol[16]; | |
168 | char method[16]; | |
169 | char url[128]; | |
170 | int buffer_size; | |
171 | uint8_t *buffer; | |
172 | int is_packetized; /* if true, the stream is packetized */ | |
173 | int packet_stream_index; /* current stream for output in state machine */ | |
174 | ||
175 | /* RTSP state specific */ | |
176 | uint8_t *pb_buffer; /* XXX: use that in all the code */ | |
177 | AVIOContext *pb; | |
178 | int seq; /* RTSP sequence number */ | |
179 | ||
180 | /* RTP state specific */ | |
181 | enum RTSPLowerTransport rtp_protocol; | |
182 | char session_id[32]; /* session id */ | |
183 | AVFormatContext *rtp_ctx[FFSERVER_MAX_STREAMS]; | |
184 | ||
185 | /* RTP/UDP specific */ | |
186 | URLContext *rtp_handles[FFSERVER_MAX_STREAMS]; | |
187 | ||
188 | /* RTP/TCP specific */ | |
189 | struct HTTPContext *rtsp_c; | |
190 | uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end; | |
191 | } HTTPContext; | |
192 | ||
193 | typedef struct FeedData { | |
194 | long long data_count; | |
195 | float avg_frame_size; /* frame size averaged over last frames with exponential mean */ | |
196 | } FeedData; | |
197 | ||
198 | static HTTPContext *first_http_ctx; | |
199 | ||
200 | static FFServerConfig config = { | |
201 | .nb_max_http_connections = 2000, | |
202 | .nb_max_connections = 5, | |
203 | .max_bandwidth = 1000, | |
204 | .use_defaults = 1, | |
205 | }; | |
206 | ||
207 | static void new_connection(int server_fd, int is_rtsp); | |
208 | static void close_connection(HTTPContext *c); | |
209 | ||
210 | /* HTTP handling */ | |
211 | static int handle_connection(HTTPContext *c); | |
212 | static int http_parse_request(HTTPContext *c); | |
213 | static int http_send_data(HTTPContext *c); | |
214 | static void compute_status(HTTPContext *c); | |
215 | static int open_input_stream(HTTPContext *c, const char *info); | |
216 | static int http_start_receive_data(HTTPContext *c); | |
217 | static int http_receive_data(HTTPContext *c); | |
218 | ||
219 | /* RTSP handling */ | |
220 | static int rtsp_parse_request(HTTPContext *c); | |
221 | static void rtsp_cmd_describe(HTTPContext *c, const char *url); | |
222 | static void rtsp_cmd_options(HTTPContext *c, const char *url); | |
223 | static void rtsp_cmd_setup(HTTPContext *c, const char *url, RTSPMessageHeader *h); | |
224 | static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h); | |
225 | static void rtsp_cmd_interrupt(HTTPContext *c, const char *url, RTSPMessageHeader *h, int pause_only); | |
226 | ||
227 | /* SDP handling */ | |
228 | static int prepare_sdp_description(FFServerStream *stream, uint8_t **pbuffer, | |
229 | struct in_addr my_ip); | |
230 | ||
231 | /* RTP handling */ | |
232 | static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr, | |
233 | FFServerStream *stream, const char *session_id, | |
234 | enum RTSPLowerTransport rtp_protocol); | |
235 | static int rtp_new_av_stream(HTTPContext *c, | |
236 | int stream_index, struct sockaddr_in *dest_addr, | |
237 | HTTPContext *rtsp_c); | |
238 | ||
239 | static const char *my_program_name; | |
240 | ||
241 | static int no_launch; | |
242 | static int need_to_start_children; | |
243 | ||
244 | /* maximum number of simultaneous HTTP connections */ | |
245 | static unsigned int nb_connections; | |
246 | ||
247 | static uint64_t current_bandwidth; | |
248 | ||
249 | static int64_t cur_time; // Making this global saves on passing it around everywhere | |
250 | ||
251 | static AVLFG random_state; | |
252 | ||
253 | static FILE *logfile = NULL; | |
254 | ||
255 | static void htmlstrip(char *s) { | |
256 | while (s && *s) { | |
257 | s += strspn(s, "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,. "); | |
258 | if (*s) | |
259 | *s++ = '?'; | |
260 | } | |
261 | } | |
262 | ||
263 | static int64_t ffm_read_write_index(int fd) | |
264 | { | |
265 | uint8_t buf[8]; | |
266 | ||
267 | if (lseek(fd, 8, SEEK_SET) < 0) | |
268 | return AVERROR(EIO); | |
269 | if (read(fd, buf, 8) != 8) | |
270 | return AVERROR(EIO); | |
271 | return AV_RB64(buf); | |
272 | } | |
273 | ||
274 | static int ffm_write_write_index(int fd, int64_t pos) | |
275 | { | |
276 | uint8_t buf[8]; | |
277 | int i; | |
278 | ||
279 | for(i=0;i<8;i++) | |
280 | buf[i] = (pos >> (56 - i * 8)) & 0xff; | |
281 | if (lseek(fd, 8, SEEK_SET) < 0) | |
282 | return AVERROR(EIO); | |
283 | if (write(fd, buf, 8) != 8) | |
284 | return AVERROR(EIO); | |
285 | return 8; | |
286 | } | |
287 | ||
288 | static void ffm_set_write_index(AVFormatContext *s, int64_t pos, | |
289 | int64_t file_size) | |
290 | { | |
291 | FFMContext *ffm = s->priv_data; | |
292 | ffm->write_index = pos; | |
293 | ffm->file_size = file_size; | |
294 | } | |
295 | ||
296 | static char *ctime1(char *buf2, int buf_size) | |
297 | { | |
298 | time_t ti; | |
299 | char *p; | |
300 | ||
301 | ti = time(NULL); | |
302 | p = ctime(&ti); | |
303 | av_strlcpy(buf2, p, buf_size); | |
304 | p = buf2 + strlen(p) - 1; | |
305 | if (*p == '\n') | |
306 | *p = '\0'; | |
307 | return buf2; | |
308 | } | |
309 | ||
310 | static void http_vlog(const char *fmt, va_list vargs) | |
311 | { | |
312 | static int print_prefix = 1; | |
313 | if (logfile) { | |
314 | if (print_prefix) { | |
315 | char buf[32]; | |
316 | ctime1(buf, sizeof(buf)); | |
317 | fprintf(logfile, "%s ", buf); | |
318 | } | |
319 | print_prefix = strstr(fmt, "\n") != NULL; | |
320 | vfprintf(logfile, fmt, vargs); | |
321 | fflush(logfile); | |
322 | } | |
323 | } | |
324 | ||
325 | #ifdef __GNUC__ | |
326 | __attribute__ ((format (printf, 1, 2))) | |
327 | #endif | |
328 | static void http_log(const char *fmt, ...) | |
329 | { | |
330 | va_list vargs; | |
331 | va_start(vargs, fmt); | |
332 | http_vlog(fmt, vargs); | |
333 | va_end(vargs); | |
334 | } | |
335 | ||
336 | static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs) | |
337 | { | |
338 | static int print_prefix = 1; | |
339 | AVClass *avc = ptr ? *(AVClass**)ptr : NULL; | |
340 | if (level > av_log_get_level()) | |
341 | return; | |
342 | if (print_prefix && avc) | |
343 | http_log("[%s @ %p]", avc->item_name(ptr), ptr); | |
344 | print_prefix = strstr(fmt, "\n") != NULL; | |
345 | http_vlog(fmt, vargs); | |
346 | } | |
347 | ||
348 | static void log_connection(HTTPContext *c) | |
349 | { | |
350 | if (c->suppress_log) | |
351 | return; | |
352 | ||
353 | http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n", | |
354 | inet_ntoa(c->from_addr.sin_addr), c->method, c->url, | |
355 | c->protocol, (c->http_error ? c->http_error : 200), c->data_count); | |
356 | } | |
357 | ||
358 | static void update_datarate(DataRateData *drd, int64_t count) | |
359 | { | |
360 | if (!drd->time1 && !drd->count1) { | |
361 | drd->time1 = drd->time2 = cur_time; | |
362 | drd->count1 = drd->count2 = count; | |
363 | } else if (cur_time - drd->time2 > 5000) { | |
364 | drd->time1 = drd->time2; | |
365 | drd->count1 = drd->count2; | |
366 | drd->time2 = cur_time; | |
367 | drd->count2 = count; | |
368 | } | |
369 | } | |
370 | ||
371 | /* In bytes per second */ | |
372 | static int compute_datarate(DataRateData *drd, int64_t count) | |
373 | { | |
374 | if (cur_time == drd->time1) | |
375 | return 0; | |
376 | ||
377 | return ((count - drd->count1) * 1000) / (cur_time - drd->time1); | |
378 | } | |
379 | ||
380 | ||
381 | static void start_children(FFServerStream *feed) | |
382 | { | |
383 | if (no_launch) | |
384 | return; | |
385 | ||
386 | for (; feed; feed = feed->next) { | |
387 | if (feed->child_argv && !feed->pid) { | |
388 | feed->pid_start = time(0); | |
389 | ||
390 | feed->pid = fork(); | |
391 | ||
392 | if (feed->pid < 0) { | |
393 | http_log("Unable to create children\n"); | |
394 | exit(1); | |
395 | } | |
396 | if (!feed->pid) { | |
397 | /* In child */ | |
398 | char pathname[1024]; | |
399 | char *slash; | |
400 | int i; | |
401 | ||
402 | /* replace "ffserver" with "ffmpeg" in the path of current | |
403 | * program. Ignore user provided path */ | |
404 | av_strlcpy(pathname, my_program_name, sizeof(pathname)); | |
405 | slash = strrchr(pathname, '/'); | |
406 | if (!slash) | |
407 | slash = pathname; | |
408 | else | |
409 | slash++; | |
410 | strcpy(slash, "ffmpeg"); | |
411 | ||
412 | http_log("Launch command line: "); | |
413 | http_log("%s ", pathname); | |
414 | for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++) | |
415 | http_log("%s ", feed->child_argv[i]); | |
416 | http_log("\n"); | |
417 | ||
418 | for (i = 3; i < 256; i++) | |
419 | close(i); | |
420 | ||
421 | if (!config.debug) { | |
422 | if (!freopen("/dev/null", "r", stdin)) | |
423 | http_log("failed to redirect STDIN to /dev/null\n;"); | |
424 | if (!freopen("/dev/null", "w", stdout)) | |
425 | http_log("failed to redirect STDOUT to /dev/null\n;"); | |
426 | if (!freopen("/dev/null", "w", stderr)) | |
427 | http_log("failed to redirect STDERR to /dev/null\n;"); | |
428 | } | |
429 | ||
430 | signal(SIGPIPE, SIG_DFL); | |
431 | ||
432 | execvp(pathname, feed->child_argv); | |
433 | ||
434 | _exit(1); | |
435 | } | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
440 | /* open a listening socket */ | |
441 | static int socket_open_listen(struct sockaddr_in *my_addr) | |
442 | { | |
443 | int server_fd, tmp; | |
444 | ||
445 | server_fd = socket(AF_INET,SOCK_STREAM,0); | |
446 | if (server_fd < 0) { | |
447 | perror ("socket"); | |
448 | return -1; | |
449 | } | |
450 | ||
451 | tmp = 1; | |
452 | if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp))) | |
453 | av_log(NULL, AV_LOG_WARNING, "setsockopt SO_REUSEADDR failed\n"); | |
454 | ||
455 | my_addr->sin_family = AF_INET; | |
456 | if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) { | |
457 | char bindmsg[32]; | |
458 | snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port)); | |
459 | perror (bindmsg); | |
460 | closesocket(server_fd); | |
461 | return -1; | |
462 | } | |
463 | ||
464 | if (listen (server_fd, 5) < 0) { | |
465 | perror ("listen"); | |
466 | closesocket(server_fd); | |
467 | return -1; | |
468 | } | |
469 | ||
470 | if (ff_socket_nonblock(server_fd, 1) < 0) | |
471 | av_log(NULL, AV_LOG_WARNING, "ff_socket_nonblock failed\n"); | |
472 | ||
473 | return server_fd; | |
474 | } | |
475 | ||
476 | /* start all multicast streams */ | |
477 | static void start_multicast(void) | |
478 | { | |
479 | FFServerStream *stream; | |
480 | char session_id[32]; | |
481 | HTTPContext *rtp_c; | |
482 | struct sockaddr_in dest_addr = {0}; | |
483 | int default_port, stream_index; | |
484 | ||
485 | default_port = 6000; | |
486 | for(stream = config.first_stream; stream; stream = stream->next) { | |
487 | if (stream->is_multicast) { | |
488 | unsigned random0 = av_lfg_get(&random_state); | |
489 | unsigned random1 = av_lfg_get(&random_state); | |
490 | /* open the RTP connection */ | |
491 | snprintf(session_id, sizeof(session_id), "%08x%08x", | |
492 | random0, random1); | |
493 | ||
494 | /* choose a port if none given */ | |
495 | if (stream->multicast_port == 0) { | |
496 | stream->multicast_port = default_port; | |
497 | default_port += 100; | |
498 | } | |
499 | ||
500 | dest_addr.sin_family = AF_INET; | |
501 | dest_addr.sin_addr = stream->multicast_ip; | |
502 | dest_addr.sin_port = htons(stream->multicast_port); | |
503 | ||
504 | rtp_c = rtp_new_connection(&dest_addr, stream, session_id, | |
505 | RTSP_LOWER_TRANSPORT_UDP_MULTICAST); | |
506 | if (!rtp_c) | |
507 | continue; | |
508 | ||
509 | if (open_input_stream(rtp_c, "") < 0) { | |
510 | http_log("Could not open input stream for stream '%s'\n", | |
511 | stream->filename); | |
512 | continue; | |
513 | } | |
514 | ||
515 | /* open each RTP stream */ | |
516 | for(stream_index = 0; stream_index < stream->nb_streams; | |
517 | stream_index++) { | |
518 | dest_addr.sin_port = htons(stream->multicast_port + | |
519 | 2 * stream_index); | |
520 | if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) { | |
521 | http_log("Could not open output stream '%s/streamid=%d'\n", | |
522 | stream->filename, stream_index); | |
523 | exit(1); | |
524 | } | |
525 | } | |
526 | ||
527 | rtp_c->state = HTTPSTATE_SEND_DATA; | |
528 | } | |
529 | } | |
530 | } | |
531 | ||
532 | /* main loop of the HTTP server */ | |
533 | static int http_server(void) | |
534 | { | |
535 | int server_fd = 0, rtsp_server_fd = 0; | |
536 | int ret, delay; | |
537 | struct pollfd *poll_table, *poll_entry; | |
538 | HTTPContext *c, *c_next; | |
539 | ||
540 | if(!(poll_table = av_mallocz_array(config.nb_max_http_connections + 2, sizeof(*poll_table)))) { | |
541 | http_log("Impossible to allocate a poll table handling %d connections.\n", config.nb_max_http_connections); | |
542 | return -1; | |
543 | } | |
544 | ||
545 | if (config.http_addr.sin_port) { | |
546 | server_fd = socket_open_listen(&config.http_addr); | |
547 | if (server_fd < 0) { | |
548 | av_free(poll_table); | |
549 | return -1; | |
550 | } | |
551 | } | |
552 | ||
553 | if (config.rtsp_addr.sin_port) { | |
554 | rtsp_server_fd = socket_open_listen(&config.rtsp_addr); | |
555 | if (rtsp_server_fd < 0) { | |
556 | av_free(poll_table); | |
557 | closesocket(server_fd); | |
558 | return -1; | |
559 | } | |
560 | } | |
561 | ||
562 | if (!rtsp_server_fd && !server_fd) { | |
563 | http_log("HTTP and RTSP disabled.\n"); | |
564 | av_free(poll_table); | |
565 | return -1; | |
566 | } | |
567 | ||
568 | http_log("FFserver started.\n"); | |
569 | ||
570 | start_children(config.first_feed); | |
571 | ||
572 | start_multicast(); | |
573 | ||
574 | for(;;) { | |
575 | poll_entry = poll_table; | |
576 | if (server_fd) { | |
577 | poll_entry->fd = server_fd; | |
578 | poll_entry->events = POLLIN; | |
579 | poll_entry++; | |
580 | } | |
581 | if (rtsp_server_fd) { | |
582 | poll_entry->fd = rtsp_server_fd; | |
583 | poll_entry->events = POLLIN; | |
584 | poll_entry++; | |
585 | } | |
586 | ||
587 | /* wait for events on each HTTP handle */ | |
588 | c = first_http_ctx; | |
589 | delay = 1000; | |
590 | while (c) { | |
591 | int fd; | |
592 | fd = c->fd; | |
593 | switch(c->state) { | |
594 | case HTTPSTATE_SEND_HEADER: | |
595 | case RTSPSTATE_SEND_REPLY: | |
596 | case RTSPSTATE_SEND_PACKET: | |
597 | c->poll_entry = poll_entry; | |
598 | poll_entry->fd = fd; | |
599 | poll_entry->events = POLLOUT; | |
600 | poll_entry++; | |
601 | break; | |
602 | case HTTPSTATE_SEND_DATA_HEADER: | |
603 | case HTTPSTATE_SEND_DATA: | |
604 | case HTTPSTATE_SEND_DATA_TRAILER: | |
605 | if (!c->is_packetized) { | |
606 | /* for TCP, we output as much as we can | |
607 | * (may need to put a limit) */ | |
608 | c->poll_entry = poll_entry; | |
609 | poll_entry->fd = fd; | |
610 | poll_entry->events = POLLOUT; | |
611 | poll_entry++; | |
612 | } else { | |
613 | /* when ffserver is doing the timing, we work by | |
614 | looking at which packet needs to be sent every | |
615 | 10 ms */ | |
616 | /* one tick wait XXX: 10 ms assumed */ | |
617 | if (delay > 10) | |
618 | delay = 10; | |
619 | } | |
620 | break; | |
621 | case HTTPSTATE_WAIT_REQUEST: | |
622 | case HTTPSTATE_RECEIVE_DATA: | |
623 | case HTTPSTATE_WAIT_FEED: | |
624 | case RTSPSTATE_WAIT_REQUEST: | |
625 | /* need to catch errors */ | |
626 | c->poll_entry = poll_entry; | |
627 | poll_entry->fd = fd; | |
628 | poll_entry->events = POLLIN;/* Maybe this will work */ | |
629 | poll_entry++; | |
630 | break; | |
631 | default: | |
632 | c->poll_entry = NULL; | |
633 | break; | |
634 | } | |
635 | c = c->next; | |
636 | } | |
637 | ||
638 | /* wait for an event on one connection. We poll at least every | |
639 | second to handle timeouts */ | |
640 | do { | |
641 | ret = poll(poll_table, poll_entry - poll_table, delay); | |
642 | if (ret < 0 && ff_neterrno() != AVERROR(EAGAIN) && | |
643 | ff_neterrno() != AVERROR(EINTR)) { | |
644 | av_free(poll_table); | |
645 | return -1; | |
646 | } | |
647 | } while (ret < 0); | |
648 | ||
649 | cur_time = av_gettime() / 1000; | |
650 | ||
651 | if (need_to_start_children) { | |
652 | need_to_start_children = 0; | |
653 | start_children(config.first_feed); | |
654 | } | |
655 | ||
656 | /* now handle the events */ | |
657 | for(c = first_http_ctx; c; c = c_next) { | |
658 | c_next = c->next; | |
659 | if (handle_connection(c) < 0) { | |
660 | log_connection(c); | |
661 | /* close and free the connection */ | |
662 | close_connection(c); | |
663 | } | |
664 | } | |
665 | ||
666 | poll_entry = poll_table; | |
667 | if (server_fd) { | |
668 | /* new HTTP connection request ? */ | |
669 | if (poll_entry->revents & POLLIN) | |
670 | new_connection(server_fd, 0); | |
671 | poll_entry++; | |
672 | } | |
673 | if (rtsp_server_fd) { | |
674 | /* new RTSP connection request ? */ | |
675 | if (poll_entry->revents & POLLIN) | |
676 | new_connection(rtsp_server_fd, 1); | |
677 | } | |
678 | } | |
679 | } | |
680 | ||
681 | /* start waiting for a new HTTP/RTSP request */ | |
682 | static void start_wait_request(HTTPContext *c, int is_rtsp) | |
683 | { | |
684 | c->buffer_ptr = c->buffer; | |
685 | c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */ | |
686 | ||
687 | if (is_rtsp) { | |
688 | c->timeout = cur_time + RTSP_REQUEST_TIMEOUT; | |
689 | c->state = RTSPSTATE_WAIT_REQUEST; | |
690 | } else { | |
691 | c->timeout = cur_time + HTTP_REQUEST_TIMEOUT; | |
692 | c->state = HTTPSTATE_WAIT_REQUEST; | |
693 | } | |
694 | } | |
695 | ||
696 | static void http_send_too_busy_reply(int fd) | |
697 | { | |
698 | char buffer[400]; | |
699 | int len = snprintf(buffer, sizeof(buffer), | |
700 | "HTTP/1.0 503 Server too busy\r\n" | |
701 | "Content-type: text/html\r\n" | |
702 | "\r\n" | |
703 | "<html><head><title>Too busy</title></head><body>\r\n" | |
704 | "<p>The server is too busy to serve your request at this time.</p>\r\n" | |
705 | "<p>The number of current connections is %u, and this exceeds the limit of %u.</p>\r\n" | |
706 | "</body></html>\r\n", | |
707 | nb_connections, config.nb_max_connections); | |
708 | av_assert0(len < sizeof(buffer)); | |
709 | if (send(fd, buffer, len, 0) < len) | |
710 | av_log(NULL, AV_LOG_WARNING, "Could not send too-busy reply, send() failed\n"); | |
711 | } | |
712 | ||
713 | ||
714 | static void new_connection(int server_fd, int is_rtsp) | |
715 | { | |
716 | struct sockaddr_in from_addr; | |
717 | socklen_t len; | |
718 | int fd; | |
719 | HTTPContext *c = NULL; | |
720 | ||
721 | len = sizeof(from_addr); | |
722 | fd = accept(server_fd, (struct sockaddr *)&from_addr, | |
723 | &len); | |
724 | if (fd < 0) { | |
725 | http_log("error during accept %s\n", strerror(errno)); | |
726 | return; | |
727 | } | |
728 | if (ff_socket_nonblock(fd, 1) < 0) | |
729 | av_log(NULL, AV_LOG_WARNING, "ff_socket_nonblock failed\n"); | |
730 | ||
731 | if (nb_connections >= config.nb_max_connections) { | |
732 | http_send_too_busy_reply(fd); | |
733 | goto fail; | |
734 | } | |
735 | ||
736 | /* add a new connection */ | |
737 | c = av_mallocz(sizeof(HTTPContext)); | |
738 | if (!c) | |
739 | goto fail; | |
740 | ||
741 | c->fd = fd; | |
742 | c->poll_entry = NULL; | |
743 | c->from_addr = from_addr; | |
744 | c->buffer_size = IOBUFFER_INIT_SIZE; | |
745 | c->buffer = av_malloc(c->buffer_size); | |
746 | if (!c->buffer) | |
747 | goto fail; | |
748 | ||
749 | c->next = first_http_ctx; | |
750 | first_http_ctx = c; | |
751 | nb_connections++; | |
752 | ||
753 | start_wait_request(c, is_rtsp); | |
754 | ||
755 | return; | |
756 | ||
757 | fail: | |
758 | if (c) { | |
759 | av_freep(&c->buffer); | |
760 | av_free(c); | |
761 | } | |
762 | closesocket(fd); | |
763 | } | |
764 | ||
765 | static void close_connection(HTTPContext *c) | |
766 | { | |
767 | HTTPContext **cp, *c1; | |
768 | int i, nb_streams; | |
769 | AVFormatContext *ctx; | |
770 | URLContext *h; | |
771 | AVStream *st; | |
772 | ||
773 | /* remove connection from list */ | |
774 | cp = &first_http_ctx; | |
775 | while (*cp) { | |
776 | c1 = *cp; | |
777 | if (c1 == c) | |
778 | *cp = c->next; | |
779 | else | |
780 | cp = &c1->next; | |
781 | } | |
782 | ||
783 | /* remove references, if any (XXX: do it faster) */ | |
784 | for(c1 = first_http_ctx; c1; c1 = c1->next) { | |
785 | if (c1->rtsp_c == c) | |
786 | c1->rtsp_c = NULL; | |
787 | } | |
788 | ||
789 | /* remove connection associated resources */ | |
790 | if (c->fd >= 0) | |
791 | closesocket(c->fd); | |
792 | if (c->fmt_in) { | |
793 | /* close each frame parser */ | |
794 | for(i=0;i<c->fmt_in->nb_streams;i++) { | |
795 | st = c->fmt_in->streams[i]; | |
796 | if (st->codec->codec) | |
797 | avcodec_close(st->codec); | |
798 | } | |
799 | avformat_close_input(&c->fmt_in); | |
800 | } | |
801 | ||
802 | /* free RTP output streams if any */ | |
803 | nb_streams = 0; | |
804 | if (c->stream) | |
805 | nb_streams = c->stream->nb_streams; | |
806 | ||
807 | for(i=0;i<nb_streams;i++) { | |
808 | ctx = c->rtp_ctx[i]; | |
809 | if (ctx) { | |
810 | av_write_trailer(ctx); | |
811 | av_dict_free(&ctx->metadata); | |
812 | av_freep(&ctx->streams[0]); | |
813 | av_freep(&ctx); | |
814 | } | |
815 | h = c->rtp_handles[i]; | |
816 | if (h) | |
817 | ffurl_close(h); | |
818 | } | |
819 | ||
820 | ctx = &c->fmt_ctx; | |
821 | ||
822 | if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) { | |
823 | if (ctx->oformat) { | |
824 | /* prepare header */ | |
825 | if (avio_open_dyn_buf(&ctx->pb) >= 0) { | |
826 | av_write_trailer(ctx); | |
827 | av_freep(&c->pb_buffer); | |
828 | avio_close_dyn_buf(ctx->pb, &c->pb_buffer); | |
829 | } | |
830 | } | |
831 | } | |
832 | ||
833 | for(i=0; i<ctx->nb_streams; i++) | |
834 | av_freep(&ctx->streams[i]); | |
835 | av_freep(&ctx->streams); | |
836 | av_freep(&ctx->priv_data); | |
837 | ||
838 | if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE) | |
839 | current_bandwidth -= c->stream->bandwidth; | |
840 | ||
841 | /* signal that there is no feed if we are the feeder socket */ | |
842 | if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) { | |
843 | c->stream->feed_opened = 0; | |
844 | close(c->feed_fd); | |
845 | } | |
846 | ||
847 | av_freep(&c->pb_buffer); | |
848 | av_freep(&c->packet_buffer); | |
849 | av_freep(&c->buffer); | |
850 | av_free(c); | |
851 | nb_connections--; | |
852 | } | |
853 | ||
854 | static int handle_connection(HTTPContext *c) | |
855 | { | |
856 | int len, ret; | |
857 | ||
858 | switch(c->state) { | |
859 | case HTTPSTATE_WAIT_REQUEST: | |
860 | case RTSPSTATE_WAIT_REQUEST: | |
861 | /* timeout ? */ | |
862 | if ((c->timeout - cur_time) < 0) | |
863 | return -1; | |
864 | if (c->poll_entry->revents & (POLLERR | POLLHUP)) | |
865 | return -1; | |
866 | ||
867 | /* no need to read if no events */ | |
868 | if (!(c->poll_entry->revents & POLLIN)) | |
869 | return 0; | |
870 | /* read the data */ | |
871 | read_loop: | |
872 | len = recv(c->fd, c->buffer_ptr, 1, 0); | |
873 | if (len < 0) { | |
874 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
875 | ff_neterrno() != AVERROR(EINTR)) | |
876 | return -1; | |
877 | } else if (len == 0) { | |
878 | return -1; | |
879 | } else { | |
880 | /* search for end of request. */ | |
881 | uint8_t *ptr; | |
882 | c->buffer_ptr += len; | |
883 | ptr = c->buffer_ptr; | |
884 | if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) || | |
885 | (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) { | |
886 | /* request found : parse it and reply */ | |
887 | if (c->state == HTTPSTATE_WAIT_REQUEST) { | |
888 | ret = http_parse_request(c); | |
889 | } else { | |
890 | ret = rtsp_parse_request(c); | |
891 | } | |
892 | if (ret < 0) | |
893 | return -1; | |
894 | } else if (ptr >= c->buffer_end) { | |
895 | /* request too long: cannot do anything */ | |
896 | return -1; | |
897 | } else goto read_loop; | |
898 | } | |
899 | break; | |
900 | ||
901 | case HTTPSTATE_SEND_HEADER: | |
902 | if (c->poll_entry->revents & (POLLERR | POLLHUP)) | |
903 | return -1; | |
904 | ||
905 | /* no need to write if no events */ | |
906 | if (!(c->poll_entry->revents & POLLOUT)) | |
907 | return 0; | |
908 | len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0); | |
909 | if (len < 0) { | |
910 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
911 | ff_neterrno() != AVERROR(EINTR)) { | |
912 | goto close_connection; | |
913 | } | |
914 | } else { | |
915 | c->buffer_ptr += len; | |
916 | if (c->stream) | |
917 | c->stream->bytes_served += len; | |
918 | c->data_count += len; | |
919 | if (c->buffer_ptr >= c->buffer_end) { | |
920 | av_freep(&c->pb_buffer); | |
921 | /* if error, exit */ | |
922 | if (c->http_error) | |
923 | return -1; | |
924 | /* all the buffer was sent : synchronize to the incoming | |
925 | * stream */ | |
926 | c->state = HTTPSTATE_SEND_DATA_HEADER; | |
927 | c->buffer_ptr = c->buffer_end = c->buffer; | |
928 | } | |
929 | } | |
930 | break; | |
931 | ||
932 | case HTTPSTATE_SEND_DATA: | |
933 | case HTTPSTATE_SEND_DATA_HEADER: | |
934 | case HTTPSTATE_SEND_DATA_TRAILER: | |
935 | /* for packetized output, we consider we can always write (the | |
936 | input streams set the speed). It may be better to verify | |
937 | that we do not rely too much on the kernel queues */ | |
938 | if (!c->is_packetized) { | |
939 | if (c->poll_entry->revents & (POLLERR | POLLHUP)) | |
940 | return -1; | |
941 | ||
942 | /* no need to read if no events */ | |
943 | if (!(c->poll_entry->revents & POLLOUT)) | |
944 | return 0; | |
945 | } | |
946 | if (http_send_data(c) < 0) | |
947 | return -1; | |
948 | /* close connection if trailer sent */ | |
949 | if (c->state == HTTPSTATE_SEND_DATA_TRAILER) | |
950 | return -1; | |
951 | break; | |
952 | case HTTPSTATE_RECEIVE_DATA: | |
953 | /* no need to read if no events */ | |
954 | if (c->poll_entry->revents & (POLLERR | POLLHUP)) | |
955 | return -1; | |
956 | if (!(c->poll_entry->revents & POLLIN)) | |
957 | return 0; | |
958 | if (http_receive_data(c) < 0) | |
959 | return -1; | |
960 | break; | |
961 | case HTTPSTATE_WAIT_FEED: | |
962 | /* no need to read if no events */ | |
963 | if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP)) | |
964 | return -1; | |
965 | ||
966 | /* nothing to do, we'll be waken up by incoming feed packets */ | |
967 | break; | |
968 | ||
969 | case RTSPSTATE_SEND_REPLY: | |
970 | if (c->poll_entry->revents & (POLLERR | POLLHUP)) | |
971 | goto close_connection; | |
972 | /* no need to write if no events */ | |
973 | if (!(c->poll_entry->revents & POLLOUT)) | |
974 | return 0; | |
975 | len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0); | |
976 | if (len < 0) { | |
977 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
978 | ff_neterrno() != AVERROR(EINTR)) { | |
979 | goto close_connection; | |
980 | } | |
981 | } else { | |
982 | c->buffer_ptr += len; | |
983 | c->data_count += len; | |
984 | if (c->buffer_ptr >= c->buffer_end) { | |
985 | /* all the buffer was sent : wait for a new request */ | |
986 | av_freep(&c->pb_buffer); | |
987 | start_wait_request(c, 1); | |
988 | } | |
989 | } | |
990 | break; | |
991 | case RTSPSTATE_SEND_PACKET: | |
992 | if (c->poll_entry->revents & (POLLERR | POLLHUP)) { | |
993 | av_freep(&c->packet_buffer); | |
994 | return -1; | |
995 | } | |
996 | /* no need to write if no events */ | |
997 | if (!(c->poll_entry->revents & POLLOUT)) | |
998 | return 0; | |
999 | len = send(c->fd, c->packet_buffer_ptr, | |
1000 | c->packet_buffer_end - c->packet_buffer_ptr, 0); | |
1001 | if (len < 0) { | |
1002 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
1003 | ff_neterrno() != AVERROR(EINTR)) { | |
1004 | /* error : close connection */ | |
1005 | av_freep(&c->packet_buffer); | |
1006 | return -1; | |
1007 | } | |
1008 | } else { | |
1009 | c->packet_buffer_ptr += len; | |
1010 | if (c->packet_buffer_ptr >= c->packet_buffer_end) { | |
1011 | /* all the buffer was sent : wait for a new request */ | |
1012 | av_freep(&c->packet_buffer); | |
1013 | c->state = RTSPSTATE_WAIT_REQUEST; | |
1014 | } | |
1015 | } | |
1016 | break; | |
1017 | case HTTPSTATE_READY: | |
1018 | /* nothing to do */ | |
1019 | break; | |
1020 | default: | |
1021 | return -1; | |
1022 | } | |
1023 | return 0; | |
1024 | ||
1025 | close_connection: | |
1026 | av_freep(&c->pb_buffer); | |
1027 | return -1; | |
1028 | } | |
1029 | ||
1030 | static int extract_rates(char *rates, int ratelen, const char *request) | |
1031 | { | |
1032 | const char *p; | |
1033 | ||
1034 | for (p = request; *p && *p != '\r' && *p != '\n'; ) { | |
1035 | if (av_strncasecmp(p, "Pragma:", 7) == 0) { | |
1036 | const char *q = p + 7; | |
1037 | ||
1038 | while (*q && *q != '\n' && av_isspace(*q)) | |
1039 | q++; | |
1040 | ||
1041 | if (av_strncasecmp(q, "stream-switch-entry=", 20) == 0) { | |
1042 | int stream_no; | |
1043 | int rate_no; | |
1044 | ||
1045 | q += 20; | |
1046 | ||
1047 | memset(rates, 0xff, ratelen); | |
1048 | ||
1049 | while (1) { | |
1050 | while (*q && *q != '\n' && *q != ':') | |
1051 | q++; | |
1052 | ||
1053 | if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2) | |
1054 | break; | |
1055 | ||
1056 | stream_no--; | |
1057 | if (stream_no < ratelen && stream_no >= 0) | |
1058 | rates[stream_no] = rate_no; | |
1059 | ||
1060 | while (*q && *q != '\n' && !av_isspace(*q)) | |
1061 | q++; | |
1062 | } | |
1063 | ||
1064 | return 1; | |
1065 | } | |
1066 | } | |
1067 | p = strchr(p, '\n'); | |
1068 | if (!p) | |
1069 | break; | |
1070 | ||
1071 | p++; | |
1072 | } | |
1073 | ||
1074 | return 0; | |
1075 | } | |
1076 | ||
1077 | static int find_stream_in_feed(FFServerStream *feed, AVCodecContext *codec, int bit_rate) | |
1078 | { | |
1079 | int i; | |
1080 | int best_bitrate = 100000000; | |
1081 | int best = -1; | |
1082 | ||
1083 | for (i = 0; i < feed->nb_streams; i++) { | |
1084 | AVCodecContext *feed_codec = feed->streams[i]->codec; | |
1085 | ||
1086 | if (feed_codec->codec_id != codec->codec_id || | |
1087 | feed_codec->sample_rate != codec->sample_rate || | |
1088 | feed_codec->width != codec->width || | |
1089 | feed_codec->height != codec->height) | |
1090 | continue; | |
1091 | ||
1092 | /* Potential stream */ | |
1093 | ||
1094 | /* We want the fastest stream less than bit_rate, or the slowest | |
1095 | * faster than bit_rate | |
1096 | */ | |
1097 | ||
1098 | if (feed_codec->bit_rate <= bit_rate) { | |
1099 | if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) { | |
1100 | best_bitrate = feed_codec->bit_rate; | |
1101 | best = i; | |
1102 | } | |
1103 | } else { | |
1104 | if (feed_codec->bit_rate < best_bitrate) { | |
1105 | best_bitrate = feed_codec->bit_rate; | |
1106 | best = i; | |
1107 | } | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | return best; | |
1112 | } | |
1113 | ||
1114 | static int modify_current_stream(HTTPContext *c, char *rates) | |
1115 | { | |
1116 | int i; | |
1117 | FFServerStream *req = c->stream; | |
1118 | int action_required = 0; | |
1119 | ||
1120 | /* Not much we can do for a feed */ | |
1121 | if (!req->feed) | |
1122 | return 0; | |
1123 | ||
1124 | for (i = 0; i < req->nb_streams; i++) { | |
1125 | AVCodecContext *codec = req->streams[i]->codec; | |
1126 | ||
1127 | switch(rates[i]) { | |
1128 | case 0: | |
1129 | c->switch_feed_streams[i] = req->feed_streams[i]; | |
1130 | break; | |
1131 | case 1: | |
1132 | c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2); | |
1133 | break; | |
1134 | case 2: | |
1135 | /* Wants off or slow */ | |
1136 | c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4); | |
1137 | #ifdef WANTS_OFF | |
1138 | /* This doesn't work well when it turns off the only stream! */ | |
1139 | c->switch_feed_streams[i] = -2; | |
1140 | c->feed_streams[i] = -2; | |
1141 | #endif | |
1142 | break; | |
1143 | } | |
1144 | ||
1145 | if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i]) | |
1146 | action_required = 1; | |
1147 | } | |
1148 | ||
1149 | return action_required; | |
1150 | } | |
1151 | ||
1152 | static void get_word(char *buf, int buf_size, const char **pp) | |
1153 | { | |
1154 | const char *p; | |
1155 | char *q; | |
1156 | ||
1157 | p = *pp; | |
1158 | p += strspn(p, SPACE_CHARS); | |
1159 | q = buf; | |
1160 | while (!av_isspace(*p) && *p != '\0') { | |
1161 | if ((q - buf) < buf_size - 1) | |
1162 | *q++ = *p; | |
1163 | p++; | |
1164 | } | |
1165 | if (buf_size > 0) | |
1166 | *q = '\0'; | |
1167 | *pp = p; | |
1168 | } | |
1169 | ||
1170 | static FFServerIPAddressACL* parse_dynamic_acl(FFServerStream *stream, HTTPContext *c) | |
1171 | { | |
1172 | FILE* f; | |
1173 | char line[1024]; | |
1174 | char cmd[1024]; | |
1175 | FFServerIPAddressACL *acl = NULL; | |
1176 | int line_num = 0; | |
1177 | const char *p; | |
1178 | ||
1179 | f = fopen(stream->dynamic_acl, "r"); | |
1180 | if (!f) { | |
1181 | perror(stream->dynamic_acl); | |
1182 | return NULL; | |
1183 | } | |
1184 | ||
1185 | acl = av_mallocz(sizeof(FFServerIPAddressACL)); | |
1186 | ||
1187 | /* Build ACL */ | |
1188 | for(;;) { | |
1189 | if (fgets(line, sizeof(line), f) == NULL) | |
1190 | break; | |
1191 | line_num++; | |
1192 | p = line; | |
1193 | while (av_isspace(*p)) | |
1194 | p++; | |
1195 | if (*p == '\0' || *p == '#') | |
1196 | continue; | |
1197 | ffserver_get_arg(cmd, sizeof(cmd), &p); | |
1198 | ||
1199 | if (!av_strcasecmp(cmd, "ACL")) | |
1200 | ffserver_parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num); | |
1201 | } | |
1202 | fclose(f); | |
1203 | return acl; | |
1204 | } | |
1205 | ||
1206 | ||
1207 | static void free_acl_list(FFServerIPAddressACL *in_acl) | |
1208 | { | |
1209 | FFServerIPAddressACL *pacl, *pacl2; | |
1210 | ||
1211 | pacl = in_acl; | |
1212 | while(pacl) { | |
1213 | pacl2 = pacl; | |
1214 | pacl = pacl->next; | |
1215 | av_freep(pacl2); | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | static int validate_acl_list(FFServerIPAddressACL *in_acl, HTTPContext *c) | |
1220 | { | |
1221 | enum FFServerIPAddressAction last_action = IP_DENY; | |
1222 | FFServerIPAddressACL *acl; | |
1223 | struct in_addr *src = &c->from_addr.sin_addr; | |
1224 | unsigned long src_addr = src->s_addr; | |
1225 | ||
1226 | for (acl = in_acl; acl; acl = acl->next) { | |
1227 | if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr) | |
1228 | return (acl->action == IP_ALLOW) ? 1 : 0; | |
1229 | last_action = acl->action; | |
1230 | } | |
1231 | ||
1232 | /* Nothing matched, so return not the last action */ | |
1233 | return (last_action == IP_DENY) ? 1 : 0; | |
1234 | } | |
1235 | ||
1236 | static int validate_acl(FFServerStream *stream, HTTPContext *c) | |
1237 | { | |
1238 | int ret = 0; | |
1239 | FFServerIPAddressACL *acl; | |
1240 | ||
1241 | /* if stream->acl is null validate_acl_list will return 1 */ | |
1242 | ret = validate_acl_list(stream->acl, c); | |
1243 | ||
1244 | if (stream->dynamic_acl[0]) { | |
1245 | acl = parse_dynamic_acl(stream, c); | |
1246 | ||
1247 | ret = validate_acl_list(acl, c); | |
1248 | ||
1249 | free_acl_list(acl); | |
1250 | } | |
1251 | ||
1252 | return ret; | |
1253 | } | |
1254 | ||
1255 | /* compute the real filename of a file by matching it without its | |
1256 | extensions to all the stream's filenames */ | |
1257 | static void compute_real_filename(char *filename, int max_size) | |
1258 | { | |
1259 | char file1[1024]; | |
1260 | char file2[1024]; | |
1261 | char *p; | |
1262 | FFServerStream *stream; | |
1263 | ||
1264 | /* compute filename by matching without the file extensions */ | |
1265 | av_strlcpy(file1, filename, sizeof(file1)); | |
1266 | p = strrchr(file1, '.'); | |
1267 | if (p) | |
1268 | *p = '\0'; | |
1269 | for(stream = config.first_stream; stream; stream = stream->next) { | |
1270 | av_strlcpy(file2, stream->filename, sizeof(file2)); | |
1271 | p = strrchr(file2, '.'); | |
1272 | if (p) | |
1273 | *p = '\0'; | |
1274 | if (!strcmp(file1, file2)) { | |
1275 | av_strlcpy(filename, stream->filename, max_size); | |
1276 | break; | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | ||
1281 | enum RedirType { | |
1282 | REDIR_NONE, | |
1283 | REDIR_ASX, | |
1284 | REDIR_RAM, | |
1285 | REDIR_ASF, | |
1286 | REDIR_RTSP, | |
1287 | REDIR_SDP, | |
1288 | }; | |
1289 | ||
1290 | /* parse HTTP request and prepare header */ | |
1291 | static int http_parse_request(HTTPContext *c) | |
1292 | { | |
1293 | const char *p; | |
1294 | char *p1; | |
1295 | enum RedirType redir_type; | |
1296 | char cmd[32]; | |
1297 | char info[1024], filename[1024]; | |
1298 | char url[1024], *q; | |
1299 | char protocol[32]; | |
1300 | char msg[1024]; | |
1301 | const char *mime_type; | |
1302 | FFServerStream *stream; | |
1303 | int i; | |
1304 | char ratebuf[32]; | |
1305 | const char *useragent = 0; | |
1306 | ||
1307 | p = c->buffer; | |
1308 | get_word(cmd, sizeof(cmd), &p); | |
1309 | av_strlcpy(c->method, cmd, sizeof(c->method)); | |
1310 | ||
1311 | if (!strcmp(cmd, "GET")) | |
1312 | c->post = 0; | |
1313 | else if (!strcmp(cmd, "POST")) | |
1314 | c->post = 1; | |
1315 | else | |
1316 | return -1; | |
1317 | ||
1318 | get_word(url, sizeof(url), &p); | |
1319 | av_strlcpy(c->url, url, sizeof(c->url)); | |
1320 | ||
1321 | get_word(protocol, sizeof(protocol), (const char **)&p); | |
1322 | if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1")) | |
1323 | return -1; | |
1324 | ||
1325 | av_strlcpy(c->protocol, protocol, sizeof(c->protocol)); | |
1326 | ||
1327 | if (config.debug) | |
1328 | http_log("%s - - New connection: %s %s\n", inet_ntoa(c->from_addr.sin_addr), cmd, url); | |
1329 | ||
1330 | /* find the filename and the optional info string in the request */ | |
1331 | p1 = strchr(url, '?'); | |
1332 | if (p1) { | |
1333 | av_strlcpy(info, p1, sizeof(info)); | |
1334 | *p1 = '\0'; | |
1335 | } else | |
1336 | info[0] = '\0'; | |
1337 | ||
1338 | av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1); | |
1339 | ||
1340 | for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) { | |
1341 | if (av_strncasecmp(p, "User-Agent:", 11) == 0) { | |
1342 | useragent = p + 11; | |
1343 | if (*useragent && *useragent != '\n' && av_isspace(*useragent)) | |
1344 | useragent++; | |
1345 | break; | |
1346 | } | |
1347 | p = strchr(p, '\n'); | |
1348 | if (!p) | |
1349 | break; | |
1350 | ||
1351 | p++; | |
1352 | } | |
1353 | ||
1354 | redir_type = REDIR_NONE; | |
1355 | if (av_match_ext(filename, "asx")) { | |
1356 | redir_type = REDIR_ASX; | |
1357 | filename[strlen(filename)-1] = 'f'; | |
1358 | } else if (av_match_ext(filename, "asf") && | |
1359 | (!useragent || av_strncasecmp(useragent, "NSPlayer", 8))) { | |
1360 | /* if this isn't WMP or lookalike, return the redirector file */ | |
1361 | redir_type = REDIR_ASF; | |
1362 | } else if (av_match_ext(filename, "rpm,ram")) { | |
1363 | redir_type = REDIR_RAM; | |
1364 | strcpy(filename + strlen(filename)-2, "m"); | |
1365 | } else if (av_match_ext(filename, "rtsp")) { | |
1366 | redir_type = REDIR_RTSP; | |
1367 | compute_real_filename(filename, sizeof(filename) - 1); | |
1368 | } else if (av_match_ext(filename, "sdp")) { | |
1369 | redir_type = REDIR_SDP; | |
1370 | compute_real_filename(filename, sizeof(filename) - 1); | |
1371 | } | |
1372 | ||
1373 | // "redirect" / request to index.html | |
1374 | if (!strlen(filename)) | |
1375 | av_strlcpy(filename, "index.html", sizeof(filename) - 1); | |
1376 | ||
1377 | stream = config.first_stream; | |
1378 | while (stream) { | |
1379 | if (!strcmp(stream->filename, filename) && validate_acl(stream, c)) | |
1380 | break; | |
1381 | stream = stream->next; | |
1382 | } | |
1383 | if (!stream) { | |
1384 | snprintf(msg, sizeof(msg), "File '%s' not found", url); | |
1385 | http_log("File '%s' not found\n", url); | |
1386 | goto send_error; | |
1387 | } | |
1388 | ||
1389 | c->stream = stream; | |
1390 | memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams)); | |
1391 | memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams)); | |
1392 | ||
1393 | if (stream->stream_type == STREAM_TYPE_REDIRECT) { | |
1394 | c->http_error = 301; | |
1395 | q = c->buffer; | |
1396 | snprintf(q, c->buffer_size, | |
1397 | "HTTP/1.0 301 Moved\r\n" | |
1398 | "Location: %s\r\n" | |
1399 | "Content-type: text/html\r\n" | |
1400 | "\r\n" | |
1401 | "<html><head><title>Moved</title></head><body>\r\n" | |
1402 | "You should be <a href=\"%s\">redirected</a>.\r\n" | |
1403 | "</body></html>\r\n", stream->feed_filename, stream->feed_filename); | |
1404 | q += strlen(q); | |
1405 | /* prepare output buffer */ | |
1406 | c->buffer_ptr = c->buffer; | |
1407 | c->buffer_end = q; | |
1408 | c->state = HTTPSTATE_SEND_HEADER; | |
1409 | return 0; | |
1410 | } | |
1411 | ||
1412 | /* If this is WMP, get the rate information */ | |
1413 | if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) { | |
1414 | if (modify_current_stream(c, ratebuf)) { | |
1415 | for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) { | |
1416 | if (c->switch_feed_streams[i] >= 0) | |
1417 | c->switch_feed_streams[i] = -1; | |
1418 | } | |
1419 | } | |
1420 | } | |
1421 | ||
1422 | if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE) | |
1423 | current_bandwidth += stream->bandwidth; | |
1424 | ||
1425 | /* If already streaming this feed, do not let start another feeder. */ | |
1426 | if (stream->feed_opened) { | |
1427 | snprintf(msg, sizeof(msg), "This feed is already being received."); | |
1428 | http_log("Feed '%s' already being received\n", stream->feed_filename); | |
1429 | goto send_error; | |
1430 | } | |
1431 | ||
1432 | if (c->post == 0 && config.max_bandwidth < current_bandwidth) { | |
1433 | c->http_error = 503; | |
1434 | q = c->buffer; | |
1435 | snprintf(q, c->buffer_size, | |
1436 | "HTTP/1.0 503 Server too busy\r\n" | |
1437 | "Content-type: text/html\r\n" | |
1438 | "\r\n" | |
1439 | "<html><head><title>Too busy</title></head><body>\r\n" | |
1440 | "<p>The server is too busy to serve your request at this time.</p>\r\n" | |
1441 | "<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, " | |
1442 | "and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n" | |
1443 | "</body></html>\r\n", current_bandwidth, config.max_bandwidth); | |
1444 | q += strlen(q); | |
1445 | /* prepare output buffer */ | |
1446 | c->buffer_ptr = c->buffer; | |
1447 | c->buffer_end = q; | |
1448 | c->state = HTTPSTATE_SEND_HEADER; | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | if (redir_type != REDIR_NONE) { | |
1453 | const char *hostinfo = 0; | |
1454 | ||
1455 | for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) { | |
1456 | if (av_strncasecmp(p, "Host:", 5) == 0) { | |
1457 | hostinfo = p + 5; | |
1458 | break; | |
1459 | } | |
1460 | p = strchr(p, '\n'); | |
1461 | if (!p) | |
1462 | break; | |
1463 | ||
1464 | p++; | |
1465 | } | |
1466 | ||
1467 | if (hostinfo) { | |
1468 | char *eoh; | |
1469 | char hostbuf[260]; | |
1470 | ||
1471 | while (av_isspace(*hostinfo)) | |
1472 | hostinfo++; | |
1473 | ||
1474 | eoh = strchr(hostinfo, '\n'); | |
1475 | if (eoh) { | |
1476 | if (eoh[-1] == '\r') | |
1477 | eoh--; | |
1478 | ||
1479 | if (eoh - hostinfo < sizeof(hostbuf) - 1) { | |
1480 | memcpy(hostbuf, hostinfo, eoh - hostinfo); | |
1481 | hostbuf[eoh - hostinfo] = 0; | |
1482 | ||
1483 | c->http_error = 200; | |
1484 | q = c->buffer; | |
1485 | switch(redir_type) { | |
1486 | case REDIR_ASX: | |
1487 | snprintf(q, c->buffer_size, | |
1488 | "HTTP/1.0 200 ASX Follows\r\n" | |
1489 | "Content-type: video/x-ms-asf\r\n" | |
1490 | "\r\n" | |
1491 | "<ASX Version=\"3\">\r\n" | |
1492 | //"<!-- Autogenerated by ffserver -->\r\n" | |
1493 | "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n" | |
1494 | "</ASX>\r\n", hostbuf, filename, info); | |
1495 | q += strlen(q); | |
1496 | break; | |
1497 | case REDIR_RAM: | |
1498 | snprintf(q, c->buffer_size, | |
1499 | "HTTP/1.0 200 RAM Follows\r\n" | |
1500 | "Content-type: audio/x-pn-realaudio\r\n" | |
1501 | "\r\n" | |
1502 | "# Autogenerated by ffserver\r\n" | |
1503 | "http://%s/%s%s\r\n", hostbuf, filename, info); | |
1504 | q += strlen(q); | |
1505 | break; | |
1506 | case REDIR_ASF: | |
1507 | snprintf(q, c->buffer_size, | |
1508 | "HTTP/1.0 200 ASF Redirect follows\r\n" | |
1509 | "Content-type: video/x-ms-asf\r\n" | |
1510 | "\r\n" | |
1511 | "[Reference]\r\n" | |
1512 | "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info); | |
1513 | q += strlen(q); | |
1514 | break; | |
1515 | case REDIR_RTSP: | |
1516 | { | |
1517 | char hostname[256], *p; | |
1518 | /* extract only hostname */ | |
1519 | av_strlcpy(hostname, hostbuf, sizeof(hostname)); | |
1520 | p = strrchr(hostname, ':'); | |
1521 | if (p) | |
1522 | *p = '\0'; | |
1523 | snprintf(q, c->buffer_size, | |
1524 | "HTTP/1.0 200 RTSP Redirect follows\r\n" | |
1525 | /* XXX: incorrect MIME type ? */ | |
1526 | "Content-type: application/x-rtsp\r\n" | |
1527 | "\r\n" | |
1528 | "rtsp://%s:%d/%s\r\n", hostname, ntohs(config.rtsp_addr.sin_port), filename); | |
1529 | q += strlen(q); | |
1530 | } | |
1531 | break; | |
1532 | case REDIR_SDP: | |
1533 | { | |
1534 | uint8_t *sdp_data; | |
1535 | int sdp_data_size; | |
1536 | socklen_t len; | |
1537 | struct sockaddr_in my_addr; | |
1538 | ||
1539 | snprintf(q, c->buffer_size, | |
1540 | "HTTP/1.0 200 OK\r\n" | |
1541 | "Content-type: application/sdp\r\n" | |
1542 | "\r\n"); | |
1543 | q += strlen(q); | |
1544 | ||
1545 | len = sizeof(my_addr); | |
1546 | ||
1547 | /* XXX: Should probably fail? */ | |
1548 | if (getsockname(c->fd, (struct sockaddr *)&my_addr, &len)) | |
1549 | http_log("getsockname() failed\n"); | |
1550 | ||
1551 | /* XXX: should use a dynamic buffer */ | |
1552 | sdp_data_size = prepare_sdp_description(stream, | |
1553 | &sdp_data, | |
1554 | my_addr.sin_addr); | |
1555 | if (sdp_data_size > 0) { | |
1556 | memcpy(q, sdp_data, sdp_data_size); | |
1557 | q += sdp_data_size; | |
1558 | *q = '\0'; | |
1559 | av_free(sdp_data); | |
1560 | } | |
1561 | } | |
1562 | break; | |
1563 | default: | |
1564 | abort(); | |
1565 | break; | |
1566 | } | |
1567 | ||
1568 | /* prepare output buffer */ | |
1569 | c->buffer_ptr = c->buffer; | |
1570 | c->buffer_end = q; | |
1571 | c->state = HTTPSTATE_SEND_HEADER; | |
1572 | return 0; | |
1573 | } | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | snprintf(msg, sizeof(msg), "ASX/RAM file not handled"); | |
1578 | goto send_error; | |
1579 | } | |
1580 | ||
1581 | stream->conns_served++; | |
1582 | ||
1583 | /* XXX: add there authenticate and IP match */ | |
1584 | ||
1585 | if (c->post) { | |
1586 | /* if post, it means a feed is being sent */ | |
1587 | if (!stream->is_feed) { | |
1588 | /* However it might be a status report from WMP! Let us log the | |
1589 | * data as it might come handy one day. */ | |
1590 | const char *logline = 0; | |
1591 | int client_id = 0; | |
1592 | ||
1593 | for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) { | |
1594 | if (av_strncasecmp(p, "Pragma: log-line=", 17) == 0) { | |
1595 | logline = p; | |
1596 | break; | |
1597 | } | |
1598 | if (av_strncasecmp(p, "Pragma: client-id=", 18) == 0) | |
1599 | client_id = strtol(p + 18, 0, 10); | |
1600 | p = strchr(p, '\n'); | |
1601 | if (!p) | |
1602 | break; | |
1603 | ||
1604 | p++; | |
1605 | } | |
1606 | ||
1607 | if (logline) { | |
1608 | char *eol = strchr(logline, '\n'); | |
1609 | ||
1610 | logline += 17; | |
1611 | ||
1612 | if (eol) { | |
1613 | if (eol[-1] == '\r') | |
1614 | eol--; | |
1615 | http_log("%.*s\n", (int) (eol - logline), logline); | |
1616 | c->suppress_log = 1; | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | #ifdef DEBUG | |
1621 | http_log("\nGot request:\n%s\n", c->buffer); | |
1622 | #endif | |
1623 | ||
1624 | if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) { | |
1625 | HTTPContext *wmpc; | |
1626 | ||
1627 | /* Now we have to find the client_id */ | |
1628 | for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) { | |
1629 | if (wmpc->wmp_client_id == client_id) | |
1630 | break; | |
1631 | } | |
1632 | ||
1633 | if (wmpc && modify_current_stream(wmpc, ratebuf)) | |
1634 | wmpc->switch_pending = 1; | |
1635 | } | |
1636 | ||
1637 | snprintf(msg, sizeof(msg), "POST command not handled"); | |
1638 | c->stream = 0; | |
1639 | goto send_error; | |
1640 | } | |
1641 | if (http_start_receive_data(c) < 0) { | |
1642 | snprintf(msg, sizeof(msg), "could not open feed"); | |
1643 | goto send_error; | |
1644 | } | |
1645 | c->http_error = 0; | |
1646 | c->state = HTTPSTATE_RECEIVE_DATA; | |
1647 | return 0; | |
1648 | } | |
1649 | ||
1650 | #ifdef DEBUG | |
1651 | if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0) | |
1652 | http_log("\nGot request:\n%s\n", c->buffer); | |
1653 | #endif | |
1654 | ||
1655 | if (c->stream->stream_type == STREAM_TYPE_STATUS) | |
1656 | goto send_status; | |
1657 | ||
1658 | /* open input stream */ | |
1659 | if (open_input_stream(c, info) < 0) { | |
1660 | snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url); | |
1661 | goto send_error; | |
1662 | } | |
1663 | ||
1664 | /* prepare HTTP header */ | |
1665 | c->buffer[0] = 0; | |
1666 | av_strlcatf(c->buffer, c->buffer_size, "HTTP/1.0 200 OK\r\n"); | |
1667 | mime_type = c->stream->fmt->mime_type; | |
1668 | if (!mime_type) | |
1669 | mime_type = "application/x-octet-stream"; | |
1670 | av_strlcatf(c->buffer, c->buffer_size, "Pragma: no-cache\r\n"); | |
1671 | ||
1672 | /* for asf, we need extra headers */ | |
1673 | if (!strcmp(c->stream->fmt->name,"asf_stream")) { | |
1674 | /* Need to allocate a client id */ | |
1675 | ||
1676 | c->wmp_client_id = av_lfg_get(&random_state); | |
1677 | ||
1678 | av_strlcatf(c->buffer, c->buffer_size, "Server: Cougar 4.1.0.3923\r\nCache-Control: no-cache\r\nPragma: client-id=%d\r\nPragma: features=\"broadcast\"\r\n", c->wmp_client_id); | |
1679 | } | |
1680 | av_strlcatf(c->buffer, c->buffer_size, "Content-Type: %s\r\n", mime_type); | |
1681 | av_strlcatf(c->buffer, c->buffer_size, "\r\n"); | |
1682 | q = c->buffer + strlen(c->buffer); | |
1683 | ||
1684 | /* prepare output buffer */ | |
1685 | c->http_error = 0; | |
1686 | c->buffer_ptr = c->buffer; | |
1687 | c->buffer_end = q; | |
1688 | c->state = HTTPSTATE_SEND_HEADER; | |
1689 | return 0; | |
1690 | send_error: | |
1691 | c->http_error = 404; | |
1692 | q = c->buffer; | |
1693 | htmlstrip(msg); | |
1694 | snprintf(q, c->buffer_size, | |
1695 | "HTTP/1.0 404 Not Found\r\n" | |
1696 | "Content-type: text/html\r\n" | |
1697 | "\r\n" | |
1698 | "<html>\n" | |
1699 | "<head><title>404 Not Found</title></head>\n" | |
1700 | "<body>%s</body>\n" | |
1701 | "</html>\n", msg); | |
1702 | q += strlen(q); | |
1703 | /* prepare output buffer */ | |
1704 | c->buffer_ptr = c->buffer; | |
1705 | c->buffer_end = q; | |
1706 | c->state = HTTPSTATE_SEND_HEADER; | |
1707 | return 0; | |
1708 | send_status: | |
1709 | compute_status(c); | |
1710 | c->http_error = 200; /* horrible : we use this value to avoid | |
1711 | going to the send data state */ | |
1712 | c->state = HTTPSTATE_SEND_HEADER; | |
1713 | return 0; | |
1714 | } | |
1715 | ||
1716 | static void fmt_bytecount(AVIOContext *pb, int64_t count) | |
1717 | { | |
1718 | static const char suffix[] = " kMGTP"; | |
1719 | const char *s; | |
1720 | ||
1721 | for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++); | |
1722 | ||
1723 | avio_printf(pb, "%"PRId64"%c", count, *s); | |
1724 | } | |
1725 | ||
1726 | static void compute_status(HTTPContext *c) | |
1727 | { | |
1728 | HTTPContext *c1; | |
1729 | FFServerStream *stream; | |
1730 | char *p; | |
1731 | time_t ti; | |
1732 | int i, len; | |
1733 | AVIOContext *pb; | |
1734 | ||
1735 | if (avio_open_dyn_buf(&pb) < 0) { | |
1736 | /* XXX: return an error ? */ | |
1737 | c->buffer_ptr = c->buffer; | |
1738 | c->buffer_end = c->buffer; | |
1739 | return; | |
1740 | } | |
1741 | ||
1742 | avio_printf(pb, "HTTP/1.0 200 OK\r\n"); | |
1743 | avio_printf(pb, "Content-type: text/html\r\n"); | |
1744 | avio_printf(pb, "Pragma: no-cache\r\n"); | |
1745 | avio_printf(pb, "\r\n"); | |
1746 | ||
1747 | avio_printf(pb, "<html><head><title>%s Status</title>\n", program_name); | |
1748 | if (c->stream->feed_filename[0]) | |
1749 | avio_printf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename); | |
1750 | avio_printf(pb, "</head>\n<body>"); | |
1751 | avio_printf(pb, "<h1>%s Status</h1>\n", program_name); | |
1752 | /* format status */ | |
1753 | avio_printf(pb, "<h2>Available Streams</h2>\n"); | |
1754 | avio_printf(pb, "<table cellspacing=0 cellpadding=4>\n"); | |
1755 | avio_printf(pb, "<tr><th valign=top>Path<th align=left>Served<br>Conns<th><br>bytes<th valign=top>Format<th>Bit rate<br>kbits/s<th align=left>Video<br>kbits/s<th><br>Codec<th align=left>Audio<br>kbits/s<th><br>Codec<th align=left valign=top>Feed\n"); | |
1756 | stream = config.first_stream; | |
1757 | while (stream) { | |
1758 | char sfilename[1024]; | |
1759 | char *eosf; | |
1760 | ||
1761 | if (stream->feed != stream) { | |
1762 | av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10); | |
1763 | eosf = sfilename + strlen(sfilename); | |
1764 | if (eosf - sfilename >= 4) { | |
1765 | if (strcmp(eosf - 4, ".asf") == 0) | |
1766 | strcpy(eosf - 4, ".asx"); | |
1767 | else if (strcmp(eosf - 3, ".rm") == 0) | |
1768 | strcpy(eosf - 3, ".ram"); | |
1769 | else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) { | |
1770 | /* generate a sample RTSP director if | |
1771 | unicast. Generate an SDP redirector if | |
1772 | multicast */ | |
1773 | eosf = strrchr(sfilename, '.'); | |
1774 | if (!eosf) | |
1775 | eosf = sfilename + strlen(sfilename); | |
1776 | if (stream->is_multicast) | |
1777 | strcpy(eosf, ".sdp"); | |
1778 | else | |
1779 | strcpy(eosf, ".rtsp"); | |
1780 | } | |
1781 | } | |
1782 | ||
1783 | avio_printf(pb, "<tr><td><a href=\"/%s\">%s</a> ", | |
1784 | sfilename, stream->filename); | |
1785 | avio_printf(pb, "<td align=right> %d <td align=right> ", | |
1786 | stream->conns_served); | |
1787 | fmt_bytecount(pb, stream->bytes_served); | |
1788 | switch(stream->stream_type) { | |
1789 | case STREAM_TYPE_LIVE: { | |
1790 | int audio_bit_rate = 0; | |
1791 | int video_bit_rate = 0; | |
1792 | const char *audio_codec_name = ""; | |
1793 | const char *video_codec_name = ""; | |
1794 | const char *audio_codec_name_extra = ""; | |
1795 | const char *video_codec_name_extra = ""; | |
1796 | ||
1797 | for(i=0;i<stream->nb_streams;i++) { | |
1798 | AVStream *st = stream->streams[i]; | |
1799 | AVCodec *codec = avcodec_find_encoder(st->codec->codec_id); | |
1800 | switch(st->codec->codec_type) { | |
1801 | case AVMEDIA_TYPE_AUDIO: | |
1802 | audio_bit_rate += st->codec->bit_rate; | |
1803 | if (codec) { | |
1804 | if (*audio_codec_name) | |
1805 | audio_codec_name_extra = "..."; | |
1806 | audio_codec_name = codec->name; | |
1807 | } | |
1808 | break; | |
1809 | case AVMEDIA_TYPE_VIDEO: | |
1810 | video_bit_rate += st->codec->bit_rate; | |
1811 | if (codec) { | |
1812 | if (*video_codec_name) | |
1813 | video_codec_name_extra = "..."; | |
1814 | video_codec_name = codec->name; | |
1815 | } | |
1816 | break; | |
1817 | case AVMEDIA_TYPE_DATA: | |
1818 | video_bit_rate += st->codec->bit_rate; | |
1819 | break; | |
1820 | default: | |
1821 | abort(); | |
1822 | } | |
1823 | } | |
1824 | avio_printf(pb, "<td align=center> %s <td align=right> %d <td align=right> %d <td> %s %s <td align=right> %d <td> %s %s", | |
1825 | stream->fmt->name, | |
1826 | stream->bandwidth, | |
1827 | video_bit_rate / 1000, video_codec_name, video_codec_name_extra, | |
1828 | audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra); | |
1829 | if (stream->feed) | |
1830 | avio_printf(pb, "<td>%s", stream->feed->filename); | |
1831 | else | |
1832 | avio_printf(pb, "<td>%s", stream->feed_filename); | |
1833 | avio_printf(pb, "\n"); | |
1834 | } | |
1835 | break; | |
1836 | default: | |
1837 | avio_printf(pb, "<td align=center> - <td align=right> - <td align=right> - <td><td align=right> - <td>\n"); | |
1838 | break; | |
1839 | } | |
1840 | } | |
1841 | stream = stream->next; | |
1842 | } | |
1843 | avio_printf(pb, "</table>\n"); | |
1844 | ||
1845 | stream = config.first_stream; | |
1846 | while (stream) { | |
1847 | if (stream->feed == stream) { | |
1848 | avio_printf(pb, "<h2>Feed %s</h2>", stream->filename); | |
1849 | if (stream->pid) { | |
1850 | avio_printf(pb, "Running as pid %d.\n", stream->pid); | |
1851 | ||
1852 | #if defined(linux) | |
1853 | { | |
1854 | FILE *pid_stat; | |
1855 | char ps_cmd[64]; | |
1856 | ||
1857 | /* This is somewhat linux specific I guess */ | |
1858 | snprintf(ps_cmd, sizeof(ps_cmd), | |
1859 | "ps -o \"%%cpu,cputime\" --no-headers %d", | |
1860 | stream->pid); | |
1861 | ||
1862 | pid_stat = popen(ps_cmd, "r"); | |
1863 | if (pid_stat) { | |
1864 | char cpuperc[10]; | |
1865 | char cpuused[64]; | |
1866 | ||
1867 | if (fscanf(pid_stat, "%9s %63s", cpuperc, | |
1868 | cpuused) == 2) { | |
1869 | avio_printf(pb, "Currently using %s%% of the cpu. Total time used %s.\n", | |
1870 | cpuperc, cpuused); | |
1871 | } | |
1872 | fclose(pid_stat); | |
1873 | } | |
1874 | } | |
1875 | #endif | |
1876 | ||
1877 | avio_printf(pb, "<p>"); | |
1878 | } | |
1879 | avio_printf(pb, "<table cellspacing=0 cellpadding=4><tr><th>Stream<th>type<th>kbits/s<th align=left>codec<th align=left>Parameters\n"); | |
1880 | ||
1881 | for (i = 0; i < stream->nb_streams; i++) { | |
1882 | AVStream *st = stream->streams[i]; | |
1883 | AVCodec *codec = avcodec_find_encoder(st->codec->codec_id); | |
1884 | const char *type = "unknown"; | |
1885 | char parameters[64]; | |
1886 | ||
1887 | parameters[0] = 0; | |
1888 | ||
1889 | switch(st->codec->codec_type) { | |
1890 | case AVMEDIA_TYPE_AUDIO: | |
1891 | type = "audio"; | |
1892 | snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate); | |
1893 | break; | |
1894 | case AVMEDIA_TYPE_VIDEO: | |
1895 | type = "video"; | |
1896 | snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height, | |
1897 | st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num); | |
1898 | break; | |
1899 | default: | |
1900 | abort(); | |
1901 | } | |
1902 | avio_printf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n", | |
1903 | i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters); | |
1904 | } | |
1905 | avio_printf(pb, "</table>\n"); | |
1906 | ||
1907 | } | |
1908 | stream = stream->next; | |
1909 | } | |
1910 | ||
1911 | /* connection status */ | |
1912 | avio_printf(pb, "<h2>Connection Status</h2>\n"); | |
1913 | ||
1914 | avio_printf(pb, "Number of connections: %d / %d<br>\n", | |
1915 | nb_connections, config.nb_max_connections); | |
1916 | ||
1917 | avio_printf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n", | |
1918 | current_bandwidth, config.max_bandwidth); | |
1919 | ||
1920 | avio_printf(pb, "<table>\n"); | |
1921 | avio_printf(pb, "<tr><th>#<th>File<th>IP<th>Proto<th>State<th>Target bits/sec<th>Actual bits/sec<th>Bytes transferred\n"); | |
1922 | c1 = first_http_ctx; | |
1923 | i = 0; | |
1924 | while (c1) { | |
1925 | int bitrate; | |
1926 | int j; | |
1927 | ||
1928 | bitrate = 0; | |
1929 | if (c1->stream) { | |
1930 | for (j = 0; j < c1->stream->nb_streams; j++) { | |
1931 | if (!c1->stream->feed) | |
1932 | bitrate += c1->stream->streams[j]->codec->bit_rate; | |
1933 | else if (c1->feed_streams[j] >= 0) | |
1934 | bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate; | |
1935 | } | |
1936 | } | |
1937 | ||
1938 | i++; | |
1939 | p = inet_ntoa(c1->from_addr.sin_addr); | |
1940 | avio_printf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td align=right>", | |
1941 | i, | |
1942 | c1->stream ? c1->stream->filename : "", | |
1943 | c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "", | |
1944 | p, | |
1945 | c1->protocol, | |
1946 | http_state[c1->state]); | |
1947 | fmt_bytecount(pb, bitrate); | |
1948 | avio_printf(pb, "<td align=right>"); | |
1949 | fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8); | |
1950 | avio_printf(pb, "<td align=right>"); | |
1951 | fmt_bytecount(pb, c1->data_count); | |
1952 | avio_printf(pb, "\n"); | |
1953 | c1 = c1->next; | |
1954 | } | |
1955 | avio_printf(pb, "</table>\n"); | |
1956 | ||
1957 | /* date */ | |
1958 | ti = time(NULL); | |
1959 | p = ctime(&ti); | |
1960 | avio_printf(pb, "<hr size=1 noshade>Generated at %s", p); | |
1961 | avio_printf(pb, "</body>\n</html>\n"); | |
1962 | ||
1963 | len = avio_close_dyn_buf(pb, &c->pb_buffer); | |
1964 | c->buffer_ptr = c->pb_buffer; | |
1965 | c->buffer_end = c->pb_buffer + len; | |
1966 | } | |
1967 | ||
1968 | static int open_input_stream(HTTPContext *c, const char *info) | |
1969 | { | |
1970 | char buf[128]; | |
1971 | char input_filename[1024]; | |
1972 | AVFormatContext *s = NULL; | |
1973 | int buf_size, i, ret; | |
1974 | int64_t stream_pos; | |
1975 | ||
1976 | /* find file name */ | |
1977 | if (c->stream->feed) { | |
1978 | strcpy(input_filename, c->stream->feed->feed_filename); | |
1979 | buf_size = FFM_PACKET_SIZE; | |
1980 | /* compute position (absolute time) */ | |
1981 | if (av_find_info_tag(buf, sizeof(buf), "date", info)) { | |
1982 | if ((ret = av_parse_time(&stream_pos, buf, 0)) < 0) { | |
1983 | http_log("Invalid date specification '%s' for stream\n", buf); | |
1984 | return ret; | |
1985 | } | |
1986 | } else if (av_find_info_tag(buf, sizeof(buf), "buffer", info)) { | |
1987 | int prebuffer = strtol(buf, 0, 10); | |
1988 | stream_pos = av_gettime() - prebuffer * (int64_t)1000000; | |
1989 | } else | |
1990 | stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000; | |
1991 | } else { | |
1992 | strcpy(input_filename, c->stream->feed_filename); | |
1993 | buf_size = 0; | |
1994 | /* compute position (relative time) */ | |
1995 | if (av_find_info_tag(buf, sizeof(buf), "date", info)) { | |
1996 | if ((ret = av_parse_time(&stream_pos, buf, 1)) < 0) { | |
1997 | http_log("Invalid date specification '%s' for stream\n", buf); | |
1998 | return ret; | |
1999 | } | |
2000 | } else | |
2001 | stream_pos = 0; | |
2002 | } | |
2003 | if (!input_filename[0]) { | |
2004 | http_log("No filename was specified for stream\n"); | |
2005 | return AVERROR(EINVAL); | |
2006 | } | |
2007 | ||
2008 | /* open stream */ | |
2009 | if ((ret = avformat_open_input(&s, input_filename, c->stream->ifmt, &c->stream->in_opts)) < 0) { | |
2010 | http_log("Could not open input '%s': %s\n", input_filename, av_err2str(ret)); | |
2011 | return ret; | |
2012 | } | |
2013 | ||
2014 | /* set buffer size */ | |
2015 | if (buf_size > 0) ffio_set_buf_size(s->pb, buf_size); | |
2016 | ||
2017 | s->flags |= AVFMT_FLAG_GENPTS; | |
2018 | c->fmt_in = s; | |
2019 | if (strcmp(s->iformat->name, "ffm") && | |
2020 | (ret = avformat_find_stream_info(c->fmt_in, NULL)) < 0) { | |
2021 | http_log("Could not find stream info for input '%s'\n", input_filename); | |
2022 | avformat_close_input(&s); | |
2023 | return ret; | |
2024 | } | |
2025 | ||
2026 | /* choose stream as clock source (we favor the video stream if | |
2027 | * present) for packet sending */ | |
2028 | c->pts_stream_index = 0; | |
2029 | for(i=0;i<c->stream->nb_streams;i++) { | |
2030 | if (c->pts_stream_index == 0 && | |
2031 | c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
2032 | c->pts_stream_index = i; | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | if (c->fmt_in->iformat->read_seek) | |
2037 | av_seek_frame(c->fmt_in, -1, stream_pos, 0); | |
2038 | /* set the start time (needed for maxtime and RTP packet timing) */ | |
2039 | c->start_time = cur_time; | |
2040 | c->first_pts = AV_NOPTS_VALUE; | |
2041 | return 0; | |
2042 | } | |
2043 | ||
2044 | /* return the server clock (in us) */ | |
2045 | static int64_t get_server_clock(HTTPContext *c) | |
2046 | { | |
2047 | /* compute current pts value from system time */ | |
2048 | return (cur_time - c->start_time) * 1000; | |
2049 | } | |
2050 | ||
2051 | /* return the estimated time at which the current packet must be sent | |
2052 | (in us) */ | |
2053 | static int64_t get_packet_send_clock(HTTPContext *c) | |
2054 | { | |
2055 | int bytes_left, bytes_sent, frame_bytes; | |
2056 | ||
2057 | frame_bytes = c->cur_frame_bytes; | |
2058 | if (frame_bytes <= 0) | |
2059 | return c->cur_pts; | |
2060 | else { | |
2061 | bytes_left = c->buffer_end - c->buffer_ptr; | |
2062 | bytes_sent = frame_bytes - bytes_left; | |
2063 | return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | ||
2068 | static int http_prepare_data(HTTPContext *c) | |
2069 | { | |
2070 | int i, len, ret; | |
2071 | AVFormatContext *ctx; | |
2072 | ||
2073 | av_freep(&c->pb_buffer); | |
2074 | switch(c->state) { | |
2075 | case HTTPSTATE_SEND_DATA_HEADER: | |
2076 | ctx = avformat_alloc_context(); | |
2077 | c->fmt_ctx = *ctx; | |
2078 | av_freep(&ctx); | |
2079 | av_dict_copy(&(c->fmt_ctx.metadata), c->stream->metadata, 0); | |
2080 | c->fmt_ctx.streams = av_mallocz_array(c->stream->nb_streams, sizeof(AVStream *)); | |
2081 | ||
2082 | for(i=0;i<c->stream->nb_streams;i++) { | |
2083 | AVStream *src; | |
2084 | c->fmt_ctx.streams[i] = av_mallocz(sizeof(AVStream)); | |
2085 | /* if file or feed, then just take streams from FFServerStream struct */ | |
2086 | if (!c->stream->feed || | |
2087 | c->stream->feed == c->stream) | |
2088 | src = c->stream->streams[i]; | |
2089 | else | |
2090 | src = c->stream->feed->streams[c->stream->feed_streams[i]]; | |
2091 | ||
2092 | *(c->fmt_ctx.streams[i]) = *src; | |
2093 | c->fmt_ctx.streams[i]->priv_data = 0; | |
2094 | /* XXX: should be done in AVStream, not in codec */ | |
2095 | c->fmt_ctx.streams[i]->codec->frame_number = 0; | |
2096 | } | |
2097 | /* set output format parameters */ | |
2098 | c->fmt_ctx.oformat = c->stream->fmt; | |
2099 | c->fmt_ctx.nb_streams = c->stream->nb_streams; | |
2100 | ||
2101 | c->got_key_frame = 0; | |
2102 | ||
2103 | /* prepare header and save header data in a stream */ | |
2104 | if (avio_open_dyn_buf(&c->fmt_ctx.pb) < 0) { | |
2105 | /* XXX: potential leak */ | |
2106 | return -1; | |
2107 | } | |
2108 | c->fmt_ctx.pb->seekable = 0; | |
2109 | ||
2110 | /* | |
2111 | * HACK to avoid MPEG-PS muxer to spit many underflow errors | |
2112 | * Default value from FFmpeg | |
2113 | * Try to set it using configuration option | |
2114 | */ | |
2115 | c->fmt_ctx.max_delay = (int)(0.7*AV_TIME_BASE); | |
2116 | ||
2117 | if ((ret = avformat_write_header(&c->fmt_ctx, NULL)) < 0) { | |
2118 | http_log("Error writing output header for stream '%s': %s\n", | |
2119 | c->stream->filename, av_err2str(ret)); | |
2120 | return ret; | |
2121 | } | |
2122 | av_dict_free(&c->fmt_ctx.metadata); | |
2123 | ||
2124 | len = avio_close_dyn_buf(c->fmt_ctx.pb, &c->pb_buffer); | |
2125 | c->buffer_ptr = c->pb_buffer; | |
2126 | c->buffer_end = c->pb_buffer + len; | |
2127 | ||
2128 | c->state = HTTPSTATE_SEND_DATA; | |
2129 | c->last_packet_sent = 0; | |
2130 | break; | |
2131 | case HTTPSTATE_SEND_DATA: | |
2132 | /* find a new packet */ | |
2133 | /* read a packet from the input stream */ | |
2134 | if (c->stream->feed) | |
2135 | ffm_set_write_index(c->fmt_in, | |
2136 | c->stream->feed->feed_write_index, | |
2137 | c->stream->feed->feed_size); | |
2138 | ||
2139 | if (c->stream->max_time && | |
2140 | c->stream->max_time + c->start_time - cur_time < 0) | |
2141 | /* We have timed out */ | |
2142 | c->state = HTTPSTATE_SEND_DATA_TRAILER; | |
2143 | else { | |
2144 | AVPacket pkt; | |
2145 | redo: | |
2146 | ret = av_read_frame(c->fmt_in, &pkt); | |
2147 | if (ret < 0) { | |
2148 | if (c->stream->feed) { | |
2149 | /* if coming from feed, it means we reached the end of the | |
2150 | ffm file, so must wait for more data */ | |
2151 | c->state = HTTPSTATE_WAIT_FEED; | |
2152 | return 1; /* state changed */ | |
2153 | } else if (ret == AVERROR(EAGAIN)) { | |
2154 | /* input not ready, come back later */ | |
2155 | return 0; | |
2156 | } else { | |
2157 | if (c->stream->loop) { | |
2158 | avformat_close_input(&c->fmt_in); | |
2159 | if (open_input_stream(c, "") < 0) | |
2160 | goto no_loop; | |
2161 | goto redo; | |
2162 | } else { | |
2163 | no_loop: | |
2164 | /* must send trailer now because EOF or error */ | |
2165 | c->state = HTTPSTATE_SEND_DATA_TRAILER; | |
2166 | } | |
2167 | } | |
2168 | } else { | |
2169 | int source_index = pkt.stream_index; | |
2170 | /* update first pts if needed */ | |
2171 | if (c->first_pts == AV_NOPTS_VALUE) { | |
2172 | c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q); | |
2173 | c->start_time = cur_time; | |
2174 | } | |
2175 | /* send it to the appropriate stream */ | |
2176 | if (c->stream->feed) { | |
2177 | /* if coming from a feed, select the right stream */ | |
2178 | if (c->switch_pending) { | |
2179 | c->switch_pending = 0; | |
2180 | for(i=0;i<c->stream->nb_streams;i++) { | |
2181 | if (c->switch_feed_streams[i] == pkt.stream_index) | |
2182 | if (pkt.flags & AV_PKT_FLAG_KEY) | |
2183 | c->switch_feed_streams[i] = -1; | |
2184 | if (c->switch_feed_streams[i] >= 0) | |
2185 | c->switch_pending = 1; | |
2186 | } | |
2187 | } | |
2188 | for(i=0;i<c->stream->nb_streams;i++) { | |
2189 | if (c->stream->feed_streams[i] == pkt.stream_index) { | |
2190 | AVStream *st = c->fmt_in->streams[source_index]; | |
2191 | pkt.stream_index = i; | |
2192 | if (pkt.flags & AV_PKT_FLAG_KEY && | |
2193 | (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || | |
2194 | c->stream->nb_streams == 1)) | |
2195 | c->got_key_frame = 1; | |
2196 | if (!c->stream->send_on_key || c->got_key_frame) | |
2197 | goto send_it; | |
2198 | } | |
2199 | } | |
2200 | } else { | |
2201 | AVCodecContext *codec; | |
2202 | AVStream *ist, *ost; | |
2203 | send_it: | |
2204 | ist = c->fmt_in->streams[source_index]; | |
2205 | /* specific handling for RTP: we use several | |
2206 | * output streams (one for each RTP connection). | |
2207 | * XXX: need more abstract handling */ | |
2208 | if (c->is_packetized) { | |
2209 | /* compute send time and duration */ | |
2210 | c->cur_pts = av_rescale_q(pkt.dts, ist->time_base, AV_TIME_BASE_Q); | |
2211 | c->cur_pts -= c->first_pts; | |
2212 | c->cur_frame_duration = av_rescale_q(pkt.duration, ist->time_base, AV_TIME_BASE_Q); | |
2213 | /* find RTP context */ | |
2214 | c->packet_stream_index = pkt.stream_index; | |
2215 | ctx = c->rtp_ctx[c->packet_stream_index]; | |
2216 | if(!ctx) { | |
2217 | av_free_packet(&pkt); | |
2218 | break; | |
2219 | } | |
2220 | codec = ctx->streams[0]->codec; | |
2221 | /* only one stream per RTP connection */ | |
2222 | pkt.stream_index = 0; | |
2223 | } else { | |
2224 | ctx = &c->fmt_ctx; | |
2225 | /* Fudge here */ | |
2226 | codec = ctx->streams[pkt.stream_index]->codec; | |
2227 | } | |
2228 | ||
2229 | if (c->is_packetized) { | |
2230 | int max_packet_size; | |
2231 | if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) | |
2232 | max_packet_size = RTSP_TCP_MAX_PACKET_SIZE; | |
2233 | else | |
2234 | max_packet_size = c->rtp_handles[c->packet_stream_index]->max_packet_size; | |
2235 | ret = ffio_open_dyn_packet_buf(&ctx->pb, max_packet_size); | |
2236 | } else { | |
2237 | ret = avio_open_dyn_buf(&ctx->pb); | |
2238 | } | |
2239 | if (ret < 0) { | |
2240 | /* XXX: potential leak */ | |
2241 | return -1; | |
2242 | } | |
2243 | ost = ctx->streams[pkt.stream_index]; | |
2244 | ||
2245 | ctx->pb->seekable = 0; | |
2246 | if (pkt.dts != AV_NOPTS_VALUE) | |
2247 | pkt.dts = av_rescale_q(pkt.dts, ist->time_base, ost->time_base); | |
2248 | if (pkt.pts != AV_NOPTS_VALUE) | |
2249 | pkt.pts = av_rescale_q(pkt.pts, ist->time_base, ost->time_base); | |
2250 | pkt.duration = av_rescale_q(pkt.duration, ist->time_base, ost->time_base); | |
2251 | if ((ret = av_write_frame(ctx, &pkt)) < 0) { | |
2252 | http_log("Error writing frame to output for stream '%s': %s\n", | |
2253 | c->stream->filename, av_err2str(ret)); | |
2254 | c->state = HTTPSTATE_SEND_DATA_TRAILER; | |
2255 | } | |
2256 | ||
2257 | av_freep(&c->pb_buffer); | |
2258 | len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer); | |
2259 | c->cur_frame_bytes = len; | |
2260 | c->buffer_ptr = c->pb_buffer; | |
2261 | c->buffer_end = c->pb_buffer + len; | |
2262 | ||
2263 | codec->frame_number++; | |
2264 | if (len == 0) { | |
2265 | av_free_packet(&pkt); | |
2266 | goto redo; | |
2267 | } | |
2268 | } | |
2269 | av_free_packet(&pkt); | |
2270 | } | |
2271 | } | |
2272 | break; | |
2273 | default: | |
2274 | case HTTPSTATE_SEND_DATA_TRAILER: | |
2275 | /* last packet test ? */ | |
2276 | if (c->last_packet_sent || c->is_packetized) | |
2277 | return -1; | |
2278 | ctx = &c->fmt_ctx; | |
2279 | /* prepare header */ | |
2280 | if (avio_open_dyn_buf(&ctx->pb) < 0) { | |
2281 | /* XXX: potential leak */ | |
2282 | return -1; | |
2283 | } | |
2284 | c->fmt_ctx.pb->seekable = 0; | |
2285 | av_write_trailer(ctx); | |
2286 | len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer); | |
2287 | c->buffer_ptr = c->pb_buffer; | |
2288 | c->buffer_end = c->pb_buffer + len; | |
2289 | ||
2290 | c->last_packet_sent = 1; | |
2291 | break; | |
2292 | } | |
2293 | return 0; | |
2294 | } | |
2295 | ||
2296 | /* should convert the format at the same time */ | |
2297 | /* send data starting at c->buffer_ptr to the output connection | |
2298 | * (either UDP or TCP) */ | |
2299 | static int http_send_data(HTTPContext *c) | |
2300 | { | |
2301 | int len, ret; | |
2302 | ||
2303 | for(;;) { | |
2304 | if (c->buffer_ptr >= c->buffer_end) { | |
2305 | ret = http_prepare_data(c); | |
2306 | if (ret < 0) | |
2307 | return -1; | |
2308 | else if (ret) | |
2309 | /* state change requested */ | |
2310 | break; | |
2311 | } else { | |
2312 | if (c->is_packetized) { | |
2313 | /* RTP data output */ | |
2314 | len = c->buffer_end - c->buffer_ptr; | |
2315 | if (len < 4) { | |
2316 | /* fail safe - should never happen */ | |
2317 | fail1: | |
2318 | c->buffer_ptr = c->buffer_end; | |
2319 | return 0; | |
2320 | } | |
2321 | len = (c->buffer_ptr[0] << 24) | | |
2322 | (c->buffer_ptr[1] << 16) | | |
2323 | (c->buffer_ptr[2] << 8) | | |
2324 | (c->buffer_ptr[3]); | |
2325 | if (len > (c->buffer_end - c->buffer_ptr)) | |
2326 | goto fail1; | |
2327 | if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) { | |
2328 | /* nothing to send yet: we can wait */ | |
2329 | return 0; | |
2330 | } | |
2331 | ||
2332 | c->data_count += len; | |
2333 | update_datarate(&c->datarate, c->data_count); | |
2334 | if (c->stream) | |
2335 | c->stream->bytes_served += len; | |
2336 | ||
2337 | if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) { | |
2338 | /* RTP packets are sent inside the RTSP TCP connection */ | |
2339 | AVIOContext *pb; | |
2340 | int interleaved_index, size; | |
2341 | uint8_t header[4]; | |
2342 | HTTPContext *rtsp_c; | |
2343 | ||
2344 | rtsp_c = c->rtsp_c; | |
2345 | /* if no RTSP connection left, error */ | |
2346 | if (!rtsp_c) | |
2347 | return -1; | |
2348 | /* if already sending something, then wait. */ | |
2349 | if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST) | |
2350 | break; | |
2351 | if (avio_open_dyn_buf(&pb) < 0) | |
2352 | goto fail1; | |
2353 | interleaved_index = c->packet_stream_index * 2; | |
2354 | /* RTCP packets are sent at odd indexes */ | |
2355 | if (c->buffer_ptr[1] == 200) | |
2356 | interleaved_index++; | |
2357 | /* write RTSP TCP header */ | |
2358 | header[0] = '$'; | |
2359 | header[1] = interleaved_index; | |
2360 | header[2] = len >> 8; | |
2361 | header[3] = len; | |
2362 | avio_write(pb, header, 4); | |
2363 | /* write RTP packet data */ | |
2364 | c->buffer_ptr += 4; | |
2365 | avio_write(pb, c->buffer_ptr, len); | |
2366 | size = avio_close_dyn_buf(pb, &c->packet_buffer); | |
2367 | /* prepare asynchronous TCP sending */ | |
2368 | rtsp_c->packet_buffer_ptr = c->packet_buffer; | |
2369 | rtsp_c->packet_buffer_end = c->packet_buffer + size; | |
2370 | c->buffer_ptr += len; | |
2371 | ||
2372 | /* send everything we can NOW */ | |
2373 | len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr, | |
2374 | rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0); | |
2375 | if (len > 0) | |
2376 | rtsp_c->packet_buffer_ptr += len; | |
2377 | if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) { | |
2378 | /* if we could not send all the data, we will | |
2379 | send it later, so a new state is needed to | |
2380 | "lock" the RTSP TCP connection */ | |
2381 | rtsp_c->state = RTSPSTATE_SEND_PACKET; | |
2382 | break; | |
2383 | } else | |
2384 | /* all data has been sent */ | |
2385 | av_freep(&c->packet_buffer); | |
2386 | } else { | |
2387 | /* send RTP packet directly in UDP */ | |
2388 | c->buffer_ptr += 4; | |
2389 | ffurl_write(c->rtp_handles[c->packet_stream_index], | |
2390 | c->buffer_ptr, len); | |
2391 | c->buffer_ptr += len; | |
2392 | /* here we continue as we can send several packets per 10 ms slot */ | |
2393 | } | |
2394 | } else { | |
2395 | /* TCP data output */ | |
2396 | len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0); | |
2397 | if (len < 0) { | |
2398 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
2399 | ff_neterrno() != AVERROR(EINTR)) | |
2400 | /* error : close connection */ | |
2401 | return -1; | |
2402 | else | |
2403 | return 0; | |
2404 | } else | |
2405 | c->buffer_ptr += len; | |
2406 | ||
2407 | c->data_count += len; | |
2408 | update_datarate(&c->datarate, c->data_count); | |
2409 | if (c->stream) | |
2410 | c->stream->bytes_served += len; | |
2411 | break; | |
2412 | } | |
2413 | } | |
2414 | } /* for(;;) */ | |
2415 | return 0; | |
2416 | } | |
2417 | ||
2418 | static int http_start_receive_data(HTTPContext *c) | |
2419 | { | |
2420 | int fd; | |
2421 | int ret; | |
2422 | ||
2423 | if (c->stream->feed_opened) { | |
2424 | http_log("Stream feed '%s' was not opened\n", c->stream->feed_filename); | |
2425 | return AVERROR(EINVAL); | |
2426 | } | |
2427 | ||
2428 | /* Don't permit writing to this one */ | |
2429 | if (c->stream->readonly) { | |
2430 | http_log("Cannot write to read-only file '%s'\n", c->stream->feed_filename); | |
2431 | return AVERROR(EINVAL); | |
2432 | } | |
2433 | ||
2434 | /* open feed */ | |
2435 | fd = open(c->stream->feed_filename, O_RDWR); | |
2436 | if (fd < 0) { | |
2437 | ret = AVERROR(errno); | |
2438 | http_log("Could not open feed file '%s': %s\n", | |
2439 | c->stream->feed_filename, strerror(errno)); | |
2440 | return ret; | |
2441 | } | |
2442 | c->feed_fd = fd; | |
2443 | ||
2444 | if (c->stream->truncate) { | |
2445 | /* truncate feed file */ | |
2446 | ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE); | |
2447 | http_log("Truncating feed file '%s'\n", c->stream->feed_filename); | |
2448 | if (ftruncate(c->feed_fd, FFM_PACKET_SIZE) < 0) { | |
2449 | ret = AVERROR(errno); | |
2450 | http_log("Error truncating feed file '%s': %s\n", | |
2451 | c->stream->feed_filename, strerror(errno)); | |
2452 | return ret; | |
2453 | } | |
2454 | } else { | |
2455 | ret = ffm_read_write_index(fd); | |
2456 | if (ret < 0) { | |
2457 | http_log("Error reading write index from feed file '%s': %s\n", | |
2458 | c->stream->feed_filename, strerror(errno)); | |
2459 | return ret; | |
2460 | } else { | |
2461 | c->stream->feed_write_index = ret; | |
2462 | } | |
2463 | } | |
2464 | ||
2465 | c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE); | |
2466 | c->stream->feed_size = lseek(fd, 0, SEEK_END); | |
2467 | lseek(fd, 0, SEEK_SET); | |
2468 | ||
2469 | /* init buffer input */ | |
2470 | c->buffer_ptr = c->buffer; | |
2471 | c->buffer_end = c->buffer + FFM_PACKET_SIZE; | |
2472 | c->stream->feed_opened = 1; | |
2473 | c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked"); | |
2474 | return 0; | |
2475 | } | |
2476 | ||
2477 | static int http_receive_data(HTTPContext *c) | |
2478 | { | |
2479 | HTTPContext *c1; | |
2480 | int len, loop_run = 0; | |
2481 | ||
2482 | while (c->chunked_encoding && !c->chunk_size && | |
2483 | c->buffer_end > c->buffer_ptr) { | |
2484 | /* read chunk header, if present */ | |
2485 | len = recv(c->fd, c->buffer_ptr, 1, 0); | |
2486 | ||
2487 | if (len < 0) { | |
2488 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
2489 | ff_neterrno() != AVERROR(EINTR)) | |
2490 | /* error : close connection */ | |
2491 | goto fail; | |
2492 | return 0; | |
2493 | } else if (len == 0) { | |
2494 | /* end of connection : close it */ | |
2495 | goto fail; | |
2496 | } else if (c->buffer_ptr - c->buffer >= 2 && | |
2497 | !memcmp(c->buffer_ptr - 1, "\r\n", 2)) { | |
2498 | c->chunk_size = strtol(c->buffer, 0, 16); | |
2499 | if (c->chunk_size == 0) // end of stream | |
2500 | goto fail; | |
2501 | c->buffer_ptr = c->buffer; | |
2502 | break; | |
2503 | } else if (++loop_run > 10) { | |
2504 | /* no chunk header, abort */ | |
2505 | goto fail; | |
2506 | } else { | |
2507 | c->buffer_ptr++; | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | if (c->buffer_end > c->buffer_ptr) { | |
2512 | len = recv(c->fd, c->buffer_ptr, | |
2513 | FFMIN(c->chunk_size, c->buffer_end - c->buffer_ptr), 0); | |
2514 | if (len < 0) { | |
2515 | if (ff_neterrno() != AVERROR(EAGAIN) && | |
2516 | ff_neterrno() != AVERROR(EINTR)) | |
2517 | /* error : close connection */ | |
2518 | goto fail; | |
2519 | } else if (len == 0) | |
2520 | /* end of connection : close it */ | |
2521 | goto fail; | |
2522 | else { | |
2523 | c->chunk_size -= len; | |
2524 | c->buffer_ptr += len; | |
2525 | c->data_count += len; | |
2526 | update_datarate(&c->datarate, c->data_count); | |
2527 | } | |
2528 | } | |
2529 | ||
2530 | if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) { | |
2531 | if (c->buffer[0] != 'f' || | |
2532 | c->buffer[1] != 'm') { | |
2533 | http_log("Feed stream has become desynchronized -- disconnecting\n"); | |
2534 | goto fail; | |
2535 | } | |
2536 | } | |
2537 | ||
2538 | if (c->buffer_ptr >= c->buffer_end) { | |
2539 | FFServerStream *feed = c->stream; | |
2540 | /* a packet has been received : write it in the store, except | |
2541 | if header */ | |
2542 | if (c->data_count > FFM_PACKET_SIZE) { | |
2543 | /* XXX: use llseek or url_seek | |
2544 | * XXX: Should probably fail? */ | |
2545 | if (lseek(c->feed_fd, feed->feed_write_index, SEEK_SET) == -1) | |
2546 | http_log("Seek to %"PRId64" failed\n", feed->feed_write_index); | |
2547 | ||
2548 | if (write(c->feed_fd, c->buffer, FFM_PACKET_SIZE) < 0) { | |
2549 | http_log("Error writing to feed file: %s\n", strerror(errno)); | |
2550 | goto fail; | |
2551 | } | |
2552 | ||
2553 | feed->feed_write_index += FFM_PACKET_SIZE; | |
2554 | /* update file size */ | |
2555 | if (feed->feed_write_index > c->stream->feed_size) | |
2556 | feed->feed_size = feed->feed_write_index; | |
2557 | ||
2558 | /* handle wrap around if max file size reached */ | |
2559 | if (c->stream->feed_max_size && feed->feed_write_index >= c->stream->feed_max_size) | |
2560 | feed->feed_write_index = FFM_PACKET_SIZE; | |
2561 | ||
2562 | /* write index */ | |
2563 | if (ffm_write_write_index(c->feed_fd, feed->feed_write_index) < 0) { | |
2564 | http_log("Error writing index to feed file: %s\n", strerror(errno)); | |
2565 | goto fail; | |
2566 | } | |
2567 | ||
2568 | /* wake up any waiting connections */ | |
2569 | for(c1 = first_http_ctx; c1; c1 = c1->next) { | |
2570 | if (c1->state == HTTPSTATE_WAIT_FEED && | |
2571 | c1->stream->feed == c->stream->feed) | |
2572 | c1->state = HTTPSTATE_SEND_DATA; | |
2573 | } | |
2574 | } else { | |
2575 | /* We have a header in our hands that contains useful data */ | |
2576 | AVFormatContext *s = avformat_alloc_context(); | |
2577 | AVIOContext *pb; | |
2578 | AVInputFormat *fmt_in; | |
2579 | int i; | |
2580 | ||
2581 | if (!s) | |
2582 | goto fail; | |
2583 | ||
2584 | /* use feed output format name to find corresponding input format */ | |
2585 | fmt_in = av_find_input_format(feed->fmt->name); | |
2586 | if (!fmt_in) | |
2587 | goto fail; | |
2588 | ||
2589 | pb = avio_alloc_context(c->buffer, c->buffer_end - c->buffer, | |
2590 | 0, NULL, NULL, NULL, NULL); | |
2591 | pb->seekable = 0; | |
2592 | ||
2593 | s->pb = pb; | |
2594 | if (avformat_open_input(&s, c->stream->feed_filename, fmt_in, NULL) < 0) { | |
2595 | av_freep(&pb); | |
2596 | goto fail; | |
2597 | } | |
2598 | ||
2599 | /* Now we have the actual streams */ | |
2600 | if (s->nb_streams != feed->nb_streams) { | |
2601 | avformat_close_input(&s); | |
2602 | av_freep(&pb); | |
2603 | http_log("Feed '%s' stream number does not match registered feed\n", | |
2604 | c->stream->feed_filename); | |
2605 | goto fail; | |
2606 | } | |
2607 | ||
2608 | for (i = 0; i < s->nb_streams; i++) { | |
2609 | AVStream *fst = feed->streams[i]; | |
2610 | AVStream *st = s->streams[i]; | |
2611 | avcodec_copy_context(fst->codec, st->codec); | |
2612 | } | |
2613 | ||
2614 | avformat_close_input(&s); | |
2615 | av_freep(&pb); | |
2616 | } | |
2617 | c->buffer_ptr = c->buffer; | |
2618 | } | |
2619 | ||
2620 | return 0; | |
2621 | fail: | |
2622 | c->stream->feed_opened = 0; | |
2623 | close(c->feed_fd); | |
2624 | /* wake up any waiting connections to stop waiting for feed */ | |
2625 | for(c1 = first_http_ctx; c1; c1 = c1->next) { | |
2626 | if (c1->state == HTTPSTATE_WAIT_FEED && | |
2627 | c1->stream->feed == c->stream->feed) | |
2628 | c1->state = HTTPSTATE_SEND_DATA_TRAILER; | |
2629 | } | |
2630 | return -1; | |
2631 | } | |
2632 | ||
2633 | /********************************************************************/ | |
2634 | /* RTSP handling */ | |
2635 | ||
2636 | static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number) | |
2637 | { | |
2638 | const char *str; | |
2639 | time_t ti; | |
2640 | struct tm *tm; | |
2641 | char buf2[32]; | |
2642 | ||
2643 | str = RTSP_STATUS_CODE2STRING(error_number); | |
2644 | if (!str) | |
2645 | str = "Unknown Error"; | |
2646 | ||
2647 | avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str); | |
2648 | avio_printf(c->pb, "CSeq: %d\r\n", c->seq); | |
2649 | ||
2650 | /* output GMT time */ | |
2651 | ti = time(NULL); | |
2652 | tm = gmtime(&ti); | |
2653 | strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm); | |
2654 | avio_printf(c->pb, "Date: %s GMT\r\n", buf2); | |
2655 | } | |
2656 | ||
2657 | static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number) | |
2658 | { | |
2659 | rtsp_reply_header(c, error_number); | |
2660 | avio_printf(c->pb, "\r\n"); | |
2661 | } | |
2662 | ||
2663 | static int rtsp_parse_request(HTTPContext *c) | |
2664 | { | |
2665 | const char *p, *p1, *p2; | |
2666 | char cmd[32]; | |
2667 | char url[1024]; | |
2668 | char protocol[32]; | |
2669 | char line[1024]; | |
2670 | int len; | |
2671 | RTSPMessageHeader header1 = { 0 }, *header = &header1; | |
2672 | ||
2673 | c->buffer_ptr[0] = '\0'; | |
2674 | p = c->buffer; | |
2675 | ||
2676 | get_word(cmd, sizeof(cmd), &p); | |
2677 | get_word(url, sizeof(url), &p); | |
2678 | get_word(protocol, sizeof(protocol), &p); | |
2679 | ||
2680 | av_strlcpy(c->method, cmd, sizeof(c->method)); | |
2681 | av_strlcpy(c->url, url, sizeof(c->url)); | |
2682 | av_strlcpy(c->protocol, protocol, sizeof(c->protocol)); | |
2683 | ||
2684 | if (avio_open_dyn_buf(&c->pb) < 0) { | |
2685 | /* XXX: cannot do more */ | |
2686 | c->pb = NULL; /* safety */ | |
2687 | return -1; | |
2688 | } | |
2689 | ||
2690 | /* check version name */ | |
2691 | if (strcmp(protocol, "RTSP/1.0")) { | |
2692 | rtsp_reply_error(c, RTSP_STATUS_VERSION); | |
2693 | goto the_end; | |
2694 | } | |
2695 | ||
2696 | /* parse each header line */ | |
2697 | /* skip to next line */ | |
2698 | while (*p != '\n' && *p != '\0') | |
2699 | p++; | |
2700 | if (*p == '\n') | |
2701 | p++; | |
2702 | while (*p != '\0') { | |
2703 | p1 = memchr(p, '\n', (char *)c->buffer_ptr - p); | |
2704 | if (!p1) | |
2705 | break; | |
2706 | p2 = p1; | |
2707 | if (p2 > p && p2[-1] == '\r') | |
2708 | p2--; | |
2709 | /* skip empty line */ | |
2710 | if (p2 == p) | |
2711 | break; | |
2712 | len = p2 - p; | |
2713 | if (len > sizeof(line) - 1) | |
2714 | len = sizeof(line) - 1; | |
2715 | memcpy(line, p, len); | |
2716 | line[len] = '\0'; | |
2717 | ff_rtsp_parse_line(header, line, NULL, NULL); | |
2718 | p = p1 + 1; | |
2719 | } | |
2720 | ||
2721 | /* handle sequence number */ | |
2722 | c->seq = header->seq; | |
2723 | ||
2724 | if (!strcmp(cmd, "DESCRIBE")) | |
2725 | rtsp_cmd_describe(c, url); | |
2726 | else if (!strcmp(cmd, "OPTIONS")) | |
2727 | rtsp_cmd_options(c, url); | |
2728 | else if (!strcmp(cmd, "SETUP")) | |
2729 | rtsp_cmd_setup(c, url, header); | |
2730 | else if (!strcmp(cmd, "PLAY")) | |
2731 | rtsp_cmd_play(c, url, header); | |
2732 | else if (!strcmp(cmd, "PAUSE")) | |
2733 | rtsp_cmd_interrupt(c, url, header, 1); | |
2734 | else if (!strcmp(cmd, "TEARDOWN")) | |
2735 | rtsp_cmd_interrupt(c, url, header, 0); | |
2736 | else | |
2737 | rtsp_reply_error(c, RTSP_STATUS_METHOD); | |
2738 | ||
2739 | the_end: | |
2740 | len = avio_close_dyn_buf(c->pb, &c->pb_buffer); | |
2741 | c->pb = NULL; /* safety */ | |
2742 | if (len < 0) { | |
2743 | /* XXX: cannot do more */ | |
2744 | return -1; | |
2745 | } | |
2746 | c->buffer_ptr = c->pb_buffer; | |
2747 | c->buffer_end = c->pb_buffer + len; | |
2748 | c->state = RTSPSTATE_SEND_REPLY; | |
2749 | return 0; | |
2750 | } | |
2751 | ||
2752 | static int prepare_sdp_description(FFServerStream *stream, uint8_t **pbuffer, | |
2753 | struct in_addr my_ip) | |
2754 | { | |
2755 | AVFormatContext *avc; | |
2756 | AVStream *avs = NULL; | |
2757 | AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL); | |
2758 | AVDictionaryEntry *entry = av_dict_get(stream->metadata, "title", NULL, 0); | |
2759 | int i; | |
2760 | ||
2761 | *pbuffer = NULL; | |
2762 | ||
2763 | avc = avformat_alloc_context(); | |
2764 | if (!avc || !rtp_format) { | |
2765 | return -1; | |
2766 | } | |
2767 | avc->oformat = rtp_format; | |
2768 | av_dict_set(&avc->metadata, "title", | |
2769 | entry ? entry->value : "No Title", 0); | |
2770 | avc->nb_streams = stream->nb_streams; | |
2771 | if (stream->is_multicast) { | |
2772 | snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d", | |
2773 | inet_ntoa(stream->multicast_ip), | |
2774 | stream->multicast_port, stream->multicast_ttl); | |
2775 | } else { | |
2776 | snprintf(avc->filename, 1024, "rtp://0.0.0.0"); | |
2777 | } | |
2778 | ||
2779 | if (avc->nb_streams >= INT_MAX/sizeof(*avc->streams) || | |
2780 | !(avc->streams = av_malloc(avc->nb_streams * sizeof(*avc->streams)))) | |
2781 | goto sdp_done; | |
2782 | if (avc->nb_streams >= INT_MAX/sizeof(*avs) || | |
2783 | !(avs = av_malloc(avc->nb_streams * sizeof(*avs)))) | |
2784 | goto sdp_done; | |
2785 | ||
2786 | for(i = 0; i < stream->nb_streams; i++) { | |
2787 | avc->streams[i] = &avs[i]; | |
2788 | avc->streams[i]->codec = stream->streams[i]->codec; | |
2789 | } | |
2790 | *pbuffer = av_mallocz(2048); | |
2791 | av_sdp_create(&avc, 1, *pbuffer, 2048); | |
2792 | ||
2793 | sdp_done: | |
2794 | av_freep(&avc->streams); | |
2795 | av_dict_free(&avc->metadata); | |
2796 | av_free(avc); | |
2797 | av_free(avs); | |
2798 | ||
2799 | return *pbuffer ? strlen(*pbuffer) : AVERROR(ENOMEM); | |
2800 | } | |
2801 | ||
2802 | static void rtsp_cmd_options(HTTPContext *c, const char *url) | |
2803 | { | |
2804 | // rtsp_reply_header(c, RTSP_STATUS_OK); | |
2805 | avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK"); | |
2806 | avio_printf(c->pb, "CSeq: %d\r\n", c->seq); | |
2807 | avio_printf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE"); | |
2808 | avio_printf(c->pb, "\r\n"); | |
2809 | } | |
2810 | ||
2811 | static void rtsp_cmd_describe(HTTPContext *c, const char *url) | |
2812 | { | |
2813 | FFServerStream *stream; | |
2814 | char path1[1024]; | |
2815 | const char *path; | |
2816 | uint8_t *content; | |
2817 | int content_length; | |
2818 | socklen_t len; | |
2819 | struct sockaddr_in my_addr; | |
2820 | ||
2821 | /* find which URL is asked */ | |
2822 | av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url); | |
2823 | path = path1; | |
2824 | if (*path == '/') | |
2825 | path++; | |
2826 | ||
2827 | for(stream = config.first_stream; stream; stream = stream->next) { | |
2828 | if (!stream->is_feed && | |
2829 | stream->fmt && !strcmp(stream->fmt->name, "rtp") && | |
2830 | !strcmp(path, stream->filename)) { | |
2831 | goto found; | |
2832 | } | |
2833 | } | |
2834 | /* no stream found */ | |
2835 | rtsp_reply_error(c, RTSP_STATUS_NOT_FOUND); | |
2836 | return; | |
2837 | ||
2838 | found: | |
2839 | /* prepare the media description in SDP format */ | |
2840 | ||
2841 | /* get the host IP */ | |
2842 | len = sizeof(my_addr); | |
2843 | getsockname(c->fd, (struct sockaddr *)&my_addr, &len); | |
2844 | content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr); | |
2845 | if (content_length < 0) { | |
2846 | rtsp_reply_error(c, RTSP_STATUS_INTERNAL); | |
2847 | return; | |
2848 | } | |
2849 | rtsp_reply_header(c, RTSP_STATUS_OK); | |
2850 | avio_printf(c->pb, "Content-Base: %s/\r\n", url); | |
2851 | avio_printf(c->pb, "Content-Type: application/sdp\r\n"); | |
2852 | avio_printf(c->pb, "Content-Length: %d\r\n", content_length); | |
2853 | avio_printf(c->pb, "\r\n"); | |
2854 | avio_write(c->pb, content, content_length); | |
2855 | av_free(content); | |
2856 | } | |
2857 | ||
2858 | static HTTPContext *find_rtp_session(const char *session_id) | |
2859 | { | |
2860 | HTTPContext *c; | |
2861 | ||
2862 | if (session_id[0] == '\0') | |
2863 | return NULL; | |
2864 | ||
2865 | for(c = first_http_ctx; c; c = c->next) { | |
2866 | if (!strcmp(c->session_id, session_id)) | |
2867 | return c; | |
2868 | } | |
2869 | return NULL; | |
2870 | } | |
2871 | ||
2872 | static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport) | |
2873 | { | |
2874 | RTSPTransportField *th; | |
2875 | int i; | |
2876 | ||
2877 | for(i=0;i<h->nb_transports;i++) { | |
2878 | th = &h->transports[i]; | |
2879 | if (th->lower_transport == lower_transport) | |
2880 | return th; | |
2881 | } | |
2882 | return NULL; | |
2883 | } | |
2884 | ||
2885 | static void rtsp_cmd_setup(HTTPContext *c, const char *url, | |
2886 | RTSPMessageHeader *h) | |
2887 | { | |
2888 | FFServerStream *stream; | |
2889 | int stream_index, rtp_port, rtcp_port; | |
2890 | char buf[1024]; | |
2891 | char path1[1024]; | |
2892 | const char *path; | |
2893 | HTTPContext *rtp_c; | |
2894 | RTSPTransportField *th; | |
2895 | struct sockaddr_in dest_addr; | |
2896 | RTSPActionServerSetup setup; | |
2897 | ||
2898 | /* find which URL is asked */ | |
2899 | av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url); | |
2900 | path = path1; | |
2901 | if (*path == '/') | |
2902 | path++; | |
2903 | ||
2904 | /* now check each stream */ | |
2905 | for(stream = config.first_stream; stream; stream = stream->next) { | |
2906 | if (!stream->is_feed && | |
2907 | stream->fmt && !strcmp(stream->fmt->name, "rtp")) { | |
2908 | /* accept aggregate filenames only if single stream */ | |
2909 | if (!strcmp(path, stream->filename)) { | |
2910 | if (stream->nb_streams != 1) { | |
2911 | rtsp_reply_error(c, RTSP_STATUS_AGGREGATE); | |
2912 | return; | |
2913 | } | |
2914 | stream_index = 0; | |
2915 | goto found; | |
2916 | } | |
2917 | ||
2918 | for(stream_index = 0; stream_index < stream->nb_streams; | |
2919 | stream_index++) { | |
2920 | snprintf(buf, sizeof(buf), "%s/streamid=%d", | |
2921 | stream->filename, stream_index); | |
2922 | if (!strcmp(path, buf)) | |
2923 | goto found; | |
2924 | } | |
2925 | } | |
2926 | } | |
2927 | /* no stream found */ | |
2928 | rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */ | |
2929 | return; | |
2930 | found: | |
2931 | ||
2932 | /* generate session id if needed */ | |
2933 | if (h->session_id[0] == '\0') { | |
2934 | unsigned random0 = av_lfg_get(&random_state); | |
2935 | unsigned random1 = av_lfg_get(&random_state); | |
2936 | snprintf(h->session_id, sizeof(h->session_id), "%08x%08x", | |
2937 | random0, random1); | |
2938 | } | |
2939 | ||
2940 | /* find RTP session, and create it if none found */ | |
2941 | rtp_c = find_rtp_session(h->session_id); | |
2942 | if (!rtp_c) { | |
2943 | /* always prefer UDP */ | |
2944 | th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP); | |
2945 | if (!th) { | |
2946 | th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP); | |
2947 | if (!th) { | |
2948 | rtsp_reply_error(c, RTSP_STATUS_TRANSPORT); | |
2949 | return; | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id, | |
2954 | th->lower_transport); | |
2955 | if (!rtp_c) { | |
2956 | rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH); | |
2957 | return; | |
2958 | } | |
2959 | ||
2960 | /* open input stream */ | |
2961 | if (open_input_stream(rtp_c, "") < 0) { | |
2962 | rtsp_reply_error(c, RTSP_STATUS_INTERNAL); | |
2963 | return; | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | /* test if stream is OK (test needed because several SETUP needs | |
2968 | to be done for a given file) */ | |
2969 | if (rtp_c->stream != stream) { | |
2970 | rtsp_reply_error(c, RTSP_STATUS_SERVICE); | |
2971 | return; | |
2972 | } | |
2973 | ||
2974 | /* test if stream is already set up */ | |
2975 | if (rtp_c->rtp_ctx[stream_index]) { | |
2976 | rtsp_reply_error(c, RTSP_STATUS_STATE); | |
2977 | return; | |
2978 | } | |
2979 | ||
2980 | /* check transport */ | |
2981 | th = find_transport(h, rtp_c->rtp_protocol); | |
2982 | if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP && | |
2983 | th->client_port_min <= 0)) { | |
2984 | rtsp_reply_error(c, RTSP_STATUS_TRANSPORT); | |
2985 | return; | |
2986 | } | |
2987 | ||
2988 | /* setup default options */ | |
2989 | setup.transport_option[0] = '\0'; | |
2990 | dest_addr = rtp_c->from_addr; | |
2991 | dest_addr.sin_port = htons(th->client_port_min); | |
2992 | ||
2993 | /* setup stream */ | |
2994 | if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) { | |
2995 | rtsp_reply_error(c, RTSP_STATUS_TRANSPORT); | |
2996 | return; | |
2997 | } | |
2998 | ||
2999 | /* now everything is OK, so we can send the connection parameters */ | |
3000 | rtsp_reply_header(c, RTSP_STATUS_OK); | |
3001 | /* session ID */ | |
3002 | avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); | |
3003 | ||
3004 | switch(rtp_c->rtp_protocol) { | |
3005 | case RTSP_LOWER_TRANSPORT_UDP: | |
3006 | rtp_port = ff_rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]); | |
3007 | rtcp_port = ff_rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]); | |
3008 | avio_printf(c->pb, "Transport: RTP/AVP/UDP;unicast;" | |
3009 | "client_port=%d-%d;server_port=%d-%d", | |
3010 | th->client_port_min, th->client_port_max, | |
3011 | rtp_port, rtcp_port); | |
3012 | break; | |
3013 | case RTSP_LOWER_TRANSPORT_TCP: | |
3014 | avio_printf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d", | |
3015 | stream_index * 2, stream_index * 2 + 1); | |
3016 | break; | |
3017 | default: | |
3018 | break; | |
3019 | } | |
3020 | if (setup.transport_option[0] != '\0') | |
3021 | avio_printf(c->pb, ";%s", setup.transport_option); | |
3022 | avio_printf(c->pb, "\r\n"); | |
3023 | ||
3024 | ||
3025 | avio_printf(c->pb, "\r\n"); | |
3026 | } | |
3027 | ||
3028 | ||
3029 | /* find an RTP connection by using the session ID. Check consistency | |
3030 | with filename */ | |
3031 | static HTTPContext *find_rtp_session_with_url(const char *url, | |
3032 | const char *session_id) | |
3033 | { | |
3034 | HTTPContext *rtp_c; | |
3035 | char path1[1024]; | |
3036 | const char *path; | |
3037 | char buf[1024]; | |
3038 | int s, len; | |
3039 | ||
3040 | rtp_c = find_rtp_session(session_id); | |
3041 | if (!rtp_c) | |
3042 | return NULL; | |
3043 | ||
3044 | /* find which URL is asked */ | |
3045 | av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url); | |
3046 | path = path1; | |
3047 | if (*path == '/') | |
3048 | path++; | |
3049 | if(!strcmp(path, rtp_c->stream->filename)) return rtp_c; | |
3050 | for(s=0; s<rtp_c->stream->nb_streams; ++s) { | |
3051 | snprintf(buf, sizeof(buf), "%s/streamid=%d", | |
3052 | rtp_c->stream->filename, s); | |
3053 | if(!strncmp(path, buf, sizeof(buf))) { | |
3054 | // XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1? | |
3055 | return rtp_c; | |
3056 | } | |
3057 | } | |
3058 | len = strlen(path); | |
3059 | if (len > 0 && path[len - 1] == '/' && | |
3060 | !strncmp(path, rtp_c->stream->filename, len - 1)) | |
3061 | return rtp_c; | |
3062 | return NULL; | |
3063 | } | |
3064 | ||
3065 | static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h) | |
3066 | { | |
3067 | HTTPContext *rtp_c; | |
3068 | ||
3069 | rtp_c = find_rtp_session_with_url(url, h->session_id); | |
3070 | if (!rtp_c) { | |
3071 | rtsp_reply_error(c, RTSP_STATUS_SESSION); | |
3072 | return; | |
3073 | } | |
3074 | ||
3075 | if (rtp_c->state != HTTPSTATE_SEND_DATA && | |
3076 | rtp_c->state != HTTPSTATE_WAIT_FEED && | |
3077 | rtp_c->state != HTTPSTATE_READY) { | |
3078 | rtsp_reply_error(c, RTSP_STATUS_STATE); | |
3079 | return; | |
3080 | } | |
3081 | ||
3082 | rtp_c->state = HTTPSTATE_SEND_DATA; | |
3083 | ||
3084 | /* now everything is OK, so we can send the connection parameters */ | |
3085 | rtsp_reply_header(c, RTSP_STATUS_OK); | |
3086 | /* session ID */ | |
3087 | avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); | |
3088 | avio_printf(c->pb, "\r\n"); | |
3089 | } | |
3090 | ||
3091 | static void rtsp_cmd_interrupt(HTTPContext *c, const char *url, RTSPMessageHeader *h, int pause_only) | |
3092 | { | |
3093 | HTTPContext *rtp_c; | |
3094 | ||
3095 | rtp_c = find_rtp_session_with_url(url, h->session_id); | |
3096 | if (!rtp_c) { | |
3097 | rtsp_reply_error(c, RTSP_STATUS_SESSION); | |
3098 | return; | |
3099 | } | |
3100 | ||
3101 | if (pause_only) { | |
3102 | if (rtp_c->state != HTTPSTATE_SEND_DATA && | |
3103 | rtp_c->state != HTTPSTATE_WAIT_FEED) { | |
3104 | rtsp_reply_error(c, RTSP_STATUS_STATE); | |
3105 | return; | |
3106 | } | |
3107 | rtp_c->state = HTTPSTATE_READY; | |
3108 | rtp_c->first_pts = AV_NOPTS_VALUE; | |
3109 | } | |
3110 | ||
3111 | /* now everything is OK, so we can send the connection parameters */ | |
3112 | rtsp_reply_header(c, RTSP_STATUS_OK); | |
3113 | /* session ID */ | |
3114 | avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id); | |
3115 | avio_printf(c->pb, "\r\n"); | |
3116 | ||
3117 | if (!pause_only) | |
3118 | close_connection(rtp_c); | |
3119 | } | |
3120 | ||
3121 | /********************************************************************/ | |
3122 | /* RTP handling */ | |
3123 | ||
3124 | static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr, | |
3125 | FFServerStream *stream, const char *session_id, | |
3126 | enum RTSPLowerTransport rtp_protocol) | |
3127 | { | |
3128 | HTTPContext *c = NULL; | |
3129 | const char *proto_str; | |
3130 | ||
3131 | /* XXX: should output a warning page when coming | |
3132 | close to the connection limit */ | |
3133 | if (nb_connections >= config.nb_max_connections) | |
3134 | goto fail; | |
3135 | ||
3136 | /* add a new connection */ | |
3137 | c = av_mallocz(sizeof(HTTPContext)); | |
3138 | if (!c) | |
3139 | goto fail; | |
3140 | ||
3141 | c->fd = -1; | |
3142 | c->poll_entry = NULL; | |
3143 | c->from_addr = *from_addr; | |
3144 | c->buffer_size = IOBUFFER_INIT_SIZE; | |
3145 | c->buffer = av_malloc(c->buffer_size); | |
3146 | if (!c->buffer) | |
3147 | goto fail; | |
3148 | nb_connections++; | |
3149 | c->stream = stream; | |
3150 | av_strlcpy(c->session_id, session_id, sizeof(c->session_id)); | |
3151 | c->state = HTTPSTATE_READY; | |
3152 | c->is_packetized = 1; | |
3153 | c->rtp_protocol = rtp_protocol; | |
3154 | ||
3155 | /* protocol is shown in statistics */ | |
3156 | switch(c->rtp_protocol) { | |
3157 | case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: | |
3158 | proto_str = "MCAST"; | |
3159 | break; | |
3160 | case RTSP_LOWER_TRANSPORT_UDP: | |
3161 | proto_str = "UDP"; | |
3162 | break; | |
3163 | case RTSP_LOWER_TRANSPORT_TCP: | |
3164 | proto_str = "TCP"; | |
3165 | break; | |
3166 | default: | |
3167 | proto_str = "???"; | |
3168 | break; | |
3169 | } | |
3170 | av_strlcpy(c->protocol, "RTP/", sizeof(c->protocol)); | |
3171 | av_strlcat(c->protocol, proto_str, sizeof(c->protocol)); | |
3172 | ||
3173 | current_bandwidth += stream->bandwidth; | |
3174 | ||
3175 | c->next = first_http_ctx; | |
3176 | first_http_ctx = c; | |
3177 | return c; | |
3178 | ||
3179 | fail: | |
3180 | if (c) { | |
3181 | av_freep(&c->buffer); | |
3182 | av_free(c); | |
3183 | } | |
3184 | return NULL; | |
3185 | } | |
3186 | ||
3187 | /* add a new RTP stream in an RTP connection (used in RTSP SETUP | |
3188 | command). If RTP/TCP protocol is used, TCP connection 'rtsp_c' is | |
3189 | used. */ | |
3190 | static int rtp_new_av_stream(HTTPContext *c, | |
3191 | int stream_index, struct sockaddr_in *dest_addr, | |
3192 | HTTPContext *rtsp_c) | |
3193 | { | |
3194 | AVFormatContext *ctx; | |
3195 | AVStream *st; | |
3196 | char *ipaddr; | |
3197 | URLContext *h = NULL; | |
3198 | uint8_t *dummy_buf; | |
3199 | int max_packet_size; | |
3200 | ||
3201 | /* now we can open the relevant output stream */ | |
3202 | ctx = avformat_alloc_context(); | |
3203 | if (!ctx) | |
3204 | return -1; | |
3205 | ctx->oformat = av_guess_format("rtp", NULL, NULL); | |
3206 | ||
3207 | st = av_mallocz(sizeof(AVStream)); | |
3208 | if (!st) | |
3209 | goto fail; | |
3210 | ctx->nb_streams = 1; | |
3211 | ctx->streams = av_mallocz_array(ctx->nb_streams, sizeof(AVStream *)); | |
3212 | if (!ctx->streams) | |
3213 | goto fail; | |
3214 | ctx->streams[0] = st; | |
3215 | ||
3216 | if (!c->stream->feed || | |
3217 | c->stream->feed == c->stream) | |
3218 | memcpy(st, c->stream->streams[stream_index], sizeof(AVStream)); | |
3219 | else | |
3220 | memcpy(st, | |
3221 | c->stream->feed->streams[c->stream->feed_streams[stream_index]], | |
3222 | sizeof(AVStream)); | |
3223 | st->priv_data = NULL; | |
3224 | ||
3225 | /* build destination RTP address */ | |
3226 | ipaddr = inet_ntoa(dest_addr->sin_addr); | |
3227 | ||
3228 | switch(c->rtp_protocol) { | |
3229 | case RTSP_LOWER_TRANSPORT_UDP: | |
3230 | case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: | |
3231 | /* RTP/UDP case */ | |
3232 | ||
3233 | /* XXX: also pass as parameter to function ? */ | |
3234 | if (c->stream->is_multicast) { | |
3235 | int ttl; | |
3236 | ttl = c->stream->multicast_ttl; | |
3237 | if (!ttl) | |
3238 | ttl = 16; | |
3239 | snprintf(ctx->filename, sizeof(ctx->filename), | |
3240 | "rtp://%s:%d?multicast=1&ttl=%d", | |
3241 | ipaddr, ntohs(dest_addr->sin_port), ttl); | |
3242 | } else { | |
3243 | snprintf(ctx->filename, sizeof(ctx->filename), | |
3244 | "rtp://%s:%d", ipaddr, ntohs(dest_addr->sin_port)); | |
3245 | } | |
3246 | ||
3247 | if (ffurl_open(&h, ctx->filename, AVIO_FLAG_WRITE, NULL, NULL) < 0) | |
3248 | goto fail; | |
3249 | c->rtp_handles[stream_index] = h; | |
3250 | max_packet_size = h->max_packet_size; | |
3251 | break; | |
3252 | case RTSP_LOWER_TRANSPORT_TCP: | |
3253 | /* RTP/TCP case */ | |
3254 | c->rtsp_c = rtsp_c; | |
3255 | max_packet_size = RTSP_TCP_MAX_PACKET_SIZE; | |
3256 | break; | |
3257 | default: | |
3258 | goto fail; | |
3259 | } | |
3260 | ||
3261 | http_log("%s:%d - - \"PLAY %s/streamid=%d %s\"\n", | |
3262 | ipaddr, ntohs(dest_addr->sin_port), | |
3263 | c->stream->filename, stream_index, c->protocol); | |
3264 | ||
3265 | /* normally, no packets should be output here, but the packet size may | |
3266 | * be checked */ | |
3267 | if (ffio_open_dyn_packet_buf(&ctx->pb, max_packet_size) < 0) { | |
3268 | /* XXX: close stream */ | |
3269 | goto fail; | |
3270 | } | |
3271 | if (avformat_write_header(ctx, NULL) < 0) { | |
3272 | fail: | |
3273 | if (h) | |
3274 | ffurl_close(h); | |
3275 | av_free(st); | |
3276 | av_free(ctx); | |
3277 | return -1; | |
3278 | } | |
3279 | avio_close_dyn_buf(ctx->pb, &dummy_buf); | |
3280 | av_free(dummy_buf); | |
3281 | ||
3282 | c->rtp_ctx[stream_index] = ctx; | |
3283 | return 0; | |
3284 | } | |
3285 | ||
3286 | /********************************************************************/ | |
3287 | /* ffserver initialization */ | |
3288 | ||
3289 | static AVStream *add_av_stream1(FFServerStream *stream, AVCodecContext *codec, int copy) | |
3290 | { | |
3291 | AVStream *fst; | |
3292 | ||
3293 | if(stream->nb_streams >= FF_ARRAY_ELEMS(stream->streams)) | |
3294 | return NULL; | |
3295 | ||
3296 | fst = av_mallocz(sizeof(AVStream)); | |
3297 | if (!fst) | |
3298 | return NULL; | |
3299 | if (copy) { | |
3300 | fst->codec = avcodec_alloc_context3(codec->codec); | |
3301 | avcodec_copy_context(fst->codec, codec); | |
3302 | } else { | |
3303 | /* live streams must use the actual feed's codec since it may be | |
3304 | * updated later to carry extradata needed by them. | |
3305 | */ | |
3306 | fst->codec = codec; | |
3307 | } | |
3308 | fst->priv_data = av_mallocz(sizeof(FeedData)); | |
3309 | fst->index = stream->nb_streams; | |
3310 | avpriv_set_pts_info(fst, 33, 1, 90000); | |
3311 | fst->sample_aspect_ratio = codec->sample_aspect_ratio; | |
3312 | stream->streams[stream->nb_streams++] = fst; | |
3313 | return fst; | |
3314 | } | |
3315 | ||
3316 | /* return the stream number in the feed */ | |
3317 | static int add_av_stream(FFServerStream *feed, AVStream *st) | |
3318 | { | |
3319 | AVStream *fst; | |
3320 | AVCodecContext *av, *av1; | |
3321 | int i; | |
3322 | ||
3323 | av = st->codec; | |
3324 | for(i=0;i<feed->nb_streams;i++) { | |
3325 | av1 = feed->streams[i]->codec; | |
3326 | if (av1->codec_id == av->codec_id && | |
3327 | av1->codec_type == av->codec_type && | |
3328 | av1->bit_rate == av->bit_rate) { | |
3329 | ||
3330 | switch(av->codec_type) { | |
3331 | case AVMEDIA_TYPE_AUDIO: | |
3332 | if (av1->channels == av->channels && | |
3333 | av1->sample_rate == av->sample_rate) | |
3334 | return i; | |
3335 | break; | |
3336 | case AVMEDIA_TYPE_VIDEO: | |
3337 | if (av1->width == av->width && | |
3338 | av1->height == av->height && | |
3339 | av1->time_base.den == av->time_base.den && | |
3340 | av1->time_base.num == av->time_base.num && | |
3341 | av1->gop_size == av->gop_size) | |
3342 | return i; | |
3343 | break; | |
3344 | default: | |
3345 | abort(); | |
3346 | } | |
3347 | } | |
3348 | } | |
3349 | ||
3350 | fst = add_av_stream1(feed, av, 0); | |
3351 | if (!fst) | |
3352 | return -1; | |
3353 | if (av_stream_get_recommended_encoder_configuration(st)) | |
3354 | av_stream_set_recommended_encoder_configuration(fst, | |
3355 | av_strdup(av_stream_get_recommended_encoder_configuration(st))); | |
3356 | return feed->nb_streams - 1; | |
3357 | } | |
3358 | ||
3359 | static void remove_stream(FFServerStream *stream) | |
3360 | { | |
3361 | FFServerStream **ps; | |
3362 | ps = &config.first_stream; | |
3363 | while (*ps) { | |
3364 | if (*ps == stream) | |
3365 | *ps = (*ps)->next; | |
3366 | else | |
3367 | ps = &(*ps)->next; | |
3368 | } | |
3369 | } | |
3370 | ||
3371 | /* specific MPEG4 handling : we extract the raw parameters */ | |
3372 | static void extract_mpeg4_header(AVFormatContext *infile) | |
3373 | { | |
3374 | int mpeg4_count, i, size; | |
3375 | AVPacket pkt; | |
3376 | AVStream *st; | |
3377 | const uint8_t *p; | |
3378 | ||
3379 | infile->flags |= AVFMT_FLAG_NOFILLIN | AVFMT_FLAG_NOPARSE; | |
3380 | ||
3381 | mpeg4_count = 0; | |
3382 | for(i=0;i<infile->nb_streams;i++) { | |
3383 | st = infile->streams[i]; | |
3384 | if (st->codec->codec_id == AV_CODEC_ID_MPEG4 && | |
3385 | st->codec->extradata_size == 0) { | |
3386 | mpeg4_count++; | |
3387 | } | |
3388 | } | |
3389 | if (!mpeg4_count) | |
3390 | return; | |
3391 | ||
3392 | printf("MPEG4 without extra data: trying to find header in %s\n", infile->filename); | |
3393 | while (mpeg4_count > 0) { | |
3394 | if (av_read_frame(infile, &pkt) < 0) | |
3395 | break; | |
3396 | st = infile->streams[pkt.stream_index]; | |
3397 | if (st->codec->codec_id == AV_CODEC_ID_MPEG4 && | |
3398 | st->codec->extradata_size == 0) { | |
3399 | av_freep(&st->codec->extradata); | |
3400 | /* fill extradata with the header */ | |
3401 | /* XXX: we make hard suppositions here ! */ | |
3402 | p = pkt.data; | |
3403 | while (p < pkt.data + pkt.size - 4) { | |
3404 | /* stop when vop header is found */ | |
3405 | if (p[0] == 0x00 && p[1] == 0x00 && | |
3406 | p[2] == 0x01 && p[3] == 0xb6) { | |
3407 | size = p - pkt.data; | |
3408 | // av_hex_dump_log(infile, AV_LOG_DEBUG, pkt.data, size); | |
3409 | st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE); | |
3410 | st->codec->extradata_size = size; | |
3411 | memcpy(st->codec->extradata, pkt.data, size); | |
3412 | break; | |
3413 | } | |
3414 | p++; | |
3415 | } | |
3416 | mpeg4_count--; | |
3417 | } | |
3418 | av_free_packet(&pkt); | |
3419 | } | |
3420 | } | |
3421 | ||
3422 | /* compute the needed AVStream for each file */ | |
3423 | static void build_file_streams(void) | |
3424 | { | |
3425 | FFServerStream *stream, *stream_next; | |
3426 | int i, ret; | |
3427 | ||
3428 | /* gather all streams */ | |
3429 | for(stream = config.first_stream; stream; stream = stream_next) { | |
3430 | AVFormatContext *infile = NULL; | |
3431 | stream_next = stream->next; | |
3432 | if (stream->stream_type == STREAM_TYPE_LIVE && | |
3433 | !stream->feed) { | |
3434 | /* the stream comes from a file */ | |
3435 | /* try to open the file */ | |
3436 | /* open stream */ | |
3437 | if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) { | |
3438 | /* specific case : if transport stream output to RTP, | |
3439 | we use a raw transport stream reader */ | |
3440 | av_dict_set(&stream->in_opts, "mpeg2ts_compute_pcr", "1", 0); | |
3441 | } | |
3442 | ||
3443 | if (!stream->feed_filename[0]) { | |
3444 | http_log("Unspecified feed file for stream '%s'\n", stream->filename); | |
3445 | goto fail; | |
3446 | } | |
3447 | ||
3448 | http_log("Opening feed file '%s' for stream '%s'\n", stream->feed_filename, stream->filename); | |
3449 | if ((ret = avformat_open_input(&infile, stream->feed_filename, stream->ifmt, &stream->in_opts)) < 0) { | |
3450 | http_log("Could not open '%s': %s\n", stream->feed_filename, av_err2str(ret)); | |
3451 | /* remove stream (no need to spend more time on it) */ | |
3452 | fail: | |
3453 | remove_stream(stream); | |
3454 | } else { | |
3455 | /* find all the AVStreams inside and reference them in | |
3456 | 'stream' */ | |
3457 | if (avformat_find_stream_info(infile, NULL) < 0) { | |
3458 | http_log("Could not find codec parameters from '%s'\n", | |
3459 | stream->feed_filename); | |
3460 | avformat_close_input(&infile); | |
3461 | goto fail; | |
3462 | } | |
3463 | extract_mpeg4_header(infile); | |
3464 | ||
3465 | for(i=0;i<infile->nb_streams;i++) | |
3466 | add_av_stream1(stream, infile->streams[i]->codec, 1); | |
3467 | ||
3468 | avformat_close_input(&infile); | |
3469 | } | |
3470 | } | |
3471 | } | |
3472 | } | |
3473 | ||
3474 | /* compute the needed AVStream for each feed */ | |
3475 | static void build_feed_streams(void) | |
3476 | { | |
3477 | FFServerStream *stream, *feed; | |
3478 | int i; | |
3479 | ||
3480 | /* gather all streams */ | |
3481 | for(stream = config.first_stream; stream; stream = stream->next) { | |
3482 | feed = stream->feed; | |
3483 | if (feed) { | |
3484 | if (stream->is_feed) { | |
3485 | for(i=0;i<stream->nb_streams;i++) | |
3486 | stream->feed_streams[i] = i; | |
3487 | } else { | |
3488 | /* we handle a stream coming from a feed */ | |
3489 | for(i=0;i<stream->nb_streams;i++) | |
3490 | stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]); | |
3491 | } | |
3492 | } | |
3493 | } | |
3494 | ||
3495 | /* create feed files if needed */ | |
3496 | for(feed = config.first_feed; feed; feed = feed->next_feed) { | |
3497 | int fd; | |
3498 | ||
3499 | if (avio_check(feed->feed_filename, AVIO_FLAG_READ) > 0) { | |
3500 | /* See if it matches */ | |
3501 | AVFormatContext *s = NULL; | |
3502 | int matches = 0; | |
3503 | ||
3504 | if (avformat_open_input(&s, feed->feed_filename, NULL, NULL) >= 0) { | |
3505 | /* set buffer size */ | |
3506 | ffio_set_buf_size(s->pb, FFM_PACKET_SIZE); | |
3507 | /* Now see if it matches */ | |
3508 | if (s->nb_streams == feed->nb_streams) { | |
3509 | matches = 1; | |
3510 | for(i=0;i<s->nb_streams;i++) { | |
3511 | AVStream *sf, *ss; | |
3512 | sf = feed->streams[i]; | |
3513 | ss = s->streams[i]; | |
3514 | ||
3515 | if (sf->index != ss->index || | |
3516 | sf->id != ss->id) { | |
3517 | http_log("Index & Id do not match for stream %d (%s)\n", | |
3518 | i, feed->feed_filename); | |
3519 | matches = 0; | |
3520 | } else { | |
3521 | AVCodecContext *ccf, *ccs; | |
3522 | ||
3523 | ccf = sf->codec; | |
3524 | ccs = ss->codec; | |
3525 | #define CHECK_CODEC(x) (ccf->x != ccs->x) | |
3526 | ||
3527 | if (CHECK_CODEC(codec_id) || CHECK_CODEC(codec_type)) { | |
3528 | http_log("Codecs do not match for stream %d\n", i); | |
3529 | matches = 0; | |
3530 | } else if (CHECK_CODEC(bit_rate) || CHECK_CODEC(flags)) { | |
3531 | http_log("Codec bitrates do not match for stream %d\n", i); | |
3532 | matches = 0; | |
3533 | } else if (ccf->codec_type == AVMEDIA_TYPE_VIDEO) { | |
3534 | if (CHECK_CODEC(time_base.den) || | |
3535 | CHECK_CODEC(time_base.num) || | |
3536 | CHECK_CODEC(width) || | |
3537 | CHECK_CODEC(height)) { | |
3538 | http_log("Codec width, height and framerate do not match for stream %d\n", i); | |
3539 | matches = 0; | |
3540 | } | |
3541 | } else if (ccf->codec_type == AVMEDIA_TYPE_AUDIO) { | |
3542 | if (CHECK_CODEC(sample_rate) || | |
3543 | CHECK_CODEC(channels) || | |
3544 | CHECK_CODEC(frame_size)) { | |
3545 | http_log("Codec sample_rate, channels, frame_size do not match for stream %d\n", i); | |
3546 | matches = 0; | |
3547 | } | |
3548 | } else { | |
3549 | http_log("Unknown codec type\n"); | |
3550 | matches = 0; | |
3551 | } | |
3552 | } | |
3553 | if (!matches) | |
3554 | break; | |
3555 | } | |
3556 | } else | |
3557 | http_log("Deleting feed file '%s' as stream counts differ (%d != %d)\n", | |
3558 | feed->feed_filename, s->nb_streams, feed->nb_streams); | |
3559 | ||
3560 | avformat_close_input(&s); | |
3561 | } else | |
3562 | http_log("Deleting feed file '%s' as it appears to be corrupt\n", | |
3563 | feed->feed_filename); | |
3564 | ||
3565 | if (!matches) { | |
3566 | if (feed->readonly) { | |
3567 | http_log("Unable to delete feed file '%s' as it is marked readonly\n", | |
3568 | feed->feed_filename); | |
3569 | exit(1); | |
3570 | } | |
3571 | unlink(feed->feed_filename); | |
3572 | } | |
3573 | } | |
3574 | if (avio_check(feed->feed_filename, AVIO_FLAG_WRITE) <= 0) { | |
3575 | AVFormatContext *s = avformat_alloc_context(); | |
3576 | ||
3577 | if (feed->readonly) { | |
3578 | http_log("Unable to create feed file '%s' as it is marked readonly\n", | |
3579 | feed->feed_filename); | |
3580 | exit(1); | |
3581 | } | |
3582 | ||
3583 | /* only write the header of the ffm file */ | |
3584 | if (avio_open(&s->pb, feed->feed_filename, AVIO_FLAG_WRITE) < 0) { | |
3585 | http_log("Could not open output feed file '%s'\n", | |
3586 | feed->feed_filename); | |
3587 | exit(1); | |
3588 | } | |
3589 | s->oformat = feed->fmt; | |
3590 | s->nb_streams = feed->nb_streams; | |
3591 | s->streams = feed->streams; | |
3592 | if (avformat_write_header(s, NULL) < 0) { | |
3593 | http_log("Container doesn't support the required parameters\n"); | |
3594 | exit(1); | |
3595 | } | |
3596 | /* XXX: need better API */ | |
3597 | av_freep(&s->priv_data); | |
3598 | avio_close(s->pb); | |
3599 | s->streams = NULL; | |
3600 | s->nb_streams = 0; | |
3601 | avformat_free_context(s); | |
3602 | } | |
3603 | /* get feed size and write index */ | |
3604 | fd = open(feed->feed_filename, O_RDONLY); | |
3605 | if (fd < 0) { | |
3606 | http_log("Could not open output feed file '%s'\n", | |
3607 | feed->feed_filename); | |
3608 | exit(1); | |
3609 | } | |
3610 | ||
3611 | feed->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE); | |
3612 | feed->feed_size = lseek(fd, 0, SEEK_END); | |
3613 | /* ensure that we do not wrap before the end of file */ | |
3614 | if (feed->feed_max_size && feed->feed_max_size < feed->feed_size) | |
3615 | feed->feed_max_size = feed->feed_size; | |
3616 | ||
3617 | close(fd); | |
3618 | } | |
3619 | } | |
3620 | ||
3621 | /* compute the bandwidth used by each stream */ | |
3622 | static void compute_bandwidth(void) | |
3623 | { | |
3624 | unsigned bandwidth; | |
3625 | int i; | |
3626 | FFServerStream *stream; | |
3627 | ||
3628 | for(stream = config.first_stream; stream; stream = stream->next) { | |
3629 | bandwidth = 0; | |
3630 | for(i=0;i<stream->nb_streams;i++) { | |
3631 | AVStream *st = stream->streams[i]; | |
3632 | switch(st->codec->codec_type) { | |
3633 | case AVMEDIA_TYPE_AUDIO: | |
3634 | case AVMEDIA_TYPE_VIDEO: | |
3635 | bandwidth += st->codec->bit_rate; | |
3636 | break; | |
3637 | default: | |
3638 | break; | |
3639 | } | |
3640 | } | |
3641 | stream->bandwidth = (bandwidth + 999) / 1000; | |
3642 | } | |
3643 | } | |
3644 | ||
3645 | static void handle_child_exit(int sig) | |
3646 | { | |
3647 | pid_t pid; | |
3648 | int status; | |
3649 | ||
3650 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { | |
3651 | FFServerStream *feed; | |
3652 | ||
3653 | for (feed = config.first_feed; feed; feed = feed->next) { | |
3654 | if (feed->pid == pid) { | |
3655 | int uptime = time(0) - feed->pid_start; | |
3656 | ||
3657 | feed->pid = 0; | |
3658 | fprintf(stderr, "%s: Pid %d exited with status %d after %d seconds\n", feed->filename, pid, status, uptime); | |
3659 | ||
3660 | if (uptime < 30) | |
3661 | /* Turn off any more restarts */ | |
3662 | ffserver_free_child_args(&feed->child_argv); | |
3663 | } | |
3664 | } | |
3665 | } | |
3666 | ||
3667 | need_to_start_children = 1; | |
3668 | } | |
3669 | ||
3670 | static void opt_debug(void) | |
3671 | { | |
3672 | config.debug = 1; | |
3673 | snprintf(config.logfilename, sizeof(config.logfilename), "-"); | |
3674 | } | |
3675 | ||
3676 | void show_help_default(const char *opt, const char *arg) | |
3677 | { | |
3678 | printf("usage: ffserver [options]\n" | |
3679 | "Hyper fast multi format Audio/Video streaming server\n"); | |
3680 | printf("\n"); | |
3681 | show_help_options(options, "Main options:", 0, 0, 0); | |
3682 | } | |
3683 | ||
3684 | static const OptionDef options[] = { | |
3685 | #include "cmdutils_common_opts.h" | |
3686 | { "n", OPT_BOOL, {(void *)&no_launch }, "enable no-launch mode" }, | |
3687 | { "d", 0, {(void*)opt_debug}, "enable debug mode" }, | |
3688 | { "f", HAS_ARG | OPT_STRING, {(void*)&config.filename }, "use configfile instead of /etc/ffserver.conf", "configfile" }, | |
3689 | { NULL }, | |
3690 | }; | |
3691 | ||
3692 | int main(int argc, char **argv) | |
3693 | { | |
3694 | struct sigaction sigact = { { 0 } }; | |
3695 | int ret = 0; | |
3696 | ||
3697 | config.filename = av_strdup("/etc/ffserver.conf"); | |
3698 | ||
3699 | parse_loglevel(argc, argv, options); | |
3700 | av_register_all(); | |
3701 | avformat_network_init(); | |
3702 | ||
3703 | show_banner(argc, argv, options); | |
3704 | ||
3705 | my_program_name = argv[0]; | |
3706 | ||
3707 | parse_options(NULL, argc, argv, options, NULL); | |
3708 | ||
3709 | unsetenv("http_proxy"); /* Kill the http_proxy */ | |
3710 | ||
3711 | av_lfg_init(&random_state, av_get_random_seed()); | |
3712 | ||
3713 | sigact.sa_handler = handle_child_exit; | |
3714 | sigact.sa_flags = SA_NOCLDSTOP | SA_RESTART; | |
3715 | sigaction(SIGCHLD, &sigact, 0); | |
3716 | ||
3717 | if ((ret = ffserver_parse_ffconfig(config.filename, &config)) < 0) { | |
3718 | fprintf(stderr, "Error reading configuration file '%s': %s\n", | |
3719 | config.filename, av_err2str(ret)); | |
3720 | exit(1); | |
3721 | } | |
3722 | av_freep(&config.filename); | |
3723 | ||
3724 | /* open log file if needed */ | |
3725 | if (config.logfilename[0] != '\0') { | |
3726 | if (!strcmp(config.logfilename, "-")) | |
3727 | logfile = stdout; | |
3728 | else | |
3729 | logfile = fopen(config.logfilename, "a"); | |
3730 | av_log_set_callback(http_av_log); | |
3731 | } | |
3732 | ||
3733 | build_file_streams(); | |
3734 | ||
3735 | build_feed_streams(); | |
3736 | ||
3737 | compute_bandwidth(); | |
3738 | ||
3739 | /* signal init */ | |
3740 | signal(SIGPIPE, SIG_IGN); | |
3741 | ||
3742 | if (http_server() < 0) { | |
3743 | http_log("Could not start server\n"); | |
3744 | exit(1); | |
3745 | } | |
3746 | ||
3747 | return 0; | |
3748 | } |