avconv: always print stats with AV_LOG_INFO
[libav.git] / avserver.c
1 /*
2 * Multiple format streaming server
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #if !HAVE_CLOSESOCKET
24 #define closesocket close
25 #endif
26 #include <string.h>
27 #include <strings.h>
28 #include <stdlib.h>
29 #include "libavformat/avformat.h"
30 #include "libavformat/ffm.h"
31 #include "libavformat/network.h"
32 #include "libavformat/os_support.h"
33 #include "libavformat/rtpdec.h"
34 #include "libavformat/rtsp.h"
35 // XXX for ffio_open_dyn_packet_buffer, to be removed
36 #include "libavformat/avio_internal.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/lfg.h"
39 #include "libavutil/dict.h"
40 #include "libavutil/mathematics.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/parseutils.h"
43 #include "libavutil/opt.h"
44 #include <stdarg.h>
45 #include <unistd.h>
46 #include <fcntl.h>
47 #include <sys/ioctl.h>
48 #if HAVE_POLL_H
49 #include <poll.h>
50 #endif
51 #include <errno.h>
52 #include <sys/time.h>
53 #include <time.h>
54 #include <sys/wait.h>
55 #include <signal.h>
56 #if HAVE_DLFCN_H
57 #include <dlfcn.h>
58 #endif
59
60 #include "cmdutils.h"
61
62 const char program_name[] = "avserver";
63 const int program_birth_year = 2000;
64
65 static const OptionDef options[];
66
67 enum HTTPState {
68 HTTPSTATE_WAIT_REQUEST,
69 HTTPSTATE_SEND_HEADER,
70 HTTPSTATE_SEND_DATA_HEADER,
71 HTTPSTATE_SEND_DATA, /* sending TCP or UDP data */
72 HTTPSTATE_SEND_DATA_TRAILER,
73 HTTPSTATE_RECEIVE_DATA,
74 HTTPSTATE_WAIT_FEED, /* wait for data from the feed */
75 HTTPSTATE_READY,
76
77 RTSPSTATE_WAIT_REQUEST,
78 RTSPSTATE_SEND_REPLY,
79 RTSPSTATE_SEND_PACKET,
80 };
81
82 static const char *http_state[] = {
83 "HTTP_WAIT_REQUEST",
84 "HTTP_SEND_HEADER",
85
86 "SEND_DATA_HEADER",
87 "SEND_DATA",
88 "SEND_DATA_TRAILER",
89 "RECEIVE_DATA",
90 "WAIT_FEED",
91 "READY",
92
93 "RTSP_WAIT_REQUEST",
94 "RTSP_SEND_REPLY",
95 "RTSP_SEND_PACKET",
96 };
97
98 #define MAX_STREAMS 20
99
100 #define IOBUFFER_INIT_SIZE 8192
101
102 /* timeouts are in ms */
103 #define HTTP_REQUEST_TIMEOUT (15 * 1000)
104 #define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000)
105
106 #define SYNC_TIMEOUT (10 * 1000)
107
108 typedef struct RTSPActionServerSetup {
109 uint32_t ipaddr;
110 char transport_option[512];
111 } RTSPActionServerSetup;
112
113 typedef struct {
114 int64_t count1, count2;
115 int64_t time1, time2;
116 } DataRateData;
117
118 /* context associated with one connection */
119 typedef struct HTTPContext {
120 enum HTTPState state;
121 int fd; /* socket file descriptor */
122 struct sockaddr_in from_addr; /* origin */
123 struct pollfd *poll_entry; /* used when polling */
124 int64_t timeout;
125 uint8_t *buffer_ptr, *buffer_end;
126 int http_error;
127 int post;
128 int chunked_encoding;
129 int chunk_size; /* 0 if it needs to be read */
130 struct HTTPContext *next;
131 int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
132 int64_t data_count;
133 /* feed input */
134 int feed_fd;
135 /* input format handling */
136 AVFormatContext *fmt_in;
137 int64_t start_time; /* In milliseconds - this wraps fairly often */
138 int64_t first_pts; /* initial pts value */
139 int64_t cur_pts; /* current pts value from the stream in us */
140 int64_t cur_frame_duration; /* duration of the current frame in us */
141 int cur_frame_bytes; /* output frame size, needed to compute
142 the time at which we send each
143 packet */
144 int pts_stream_index; /* stream we choose as clock reference */
145 int64_t cur_clock; /* current clock reference value in us */
146 /* output format handling */
147 struct FFStream *stream;
148 /* -1 is invalid stream */
149 int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
150 int switch_feed_streams[MAX_STREAMS]; /* index of streams in the feed */
151 int switch_pending;
152 AVFormatContext fmt_ctx; /* instance of FFStream for one user */
153 int last_packet_sent; /* true if last data packet was sent */
154 int suppress_log;
155 DataRateData datarate;
156 int wmp_client_id;
157 char protocol[16];
158 char method[16];
159 char url[128];
160 int buffer_size;
161 uint8_t *buffer;
162 int is_packetized; /* if true, the stream is packetized */
163 int packet_stream_index; /* current stream for output in state machine */
164
165 /* RTSP state specific */
166 uint8_t *pb_buffer; /* XXX: use that in all the code */
167 AVIOContext *pb;
168 int seq; /* RTSP sequence number */
169
170 /* RTP state specific */
171 enum RTSPLowerTransport rtp_protocol;
172 char session_id[32]; /* session id */
173 AVFormatContext *rtp_ctx[MAX_STREAMS];
174
175 /* RTP/UDP specific */
176 URLContext *rtp_handles[MAX_STREAMS];
177
178 /* RTP/TCP specific */
179 struct HTTPContext *rtsp_c;
180 uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end;
181 } HTTPContext;
182
183 /* each generated stream is described here */
184 enum StreamType {
185 STREAM_TYPE_LIVE,
186 STREAM_TYPE_STATUS,
187 STREAM_TYPE_REDIRECT,
188 };
189
190 enum IPAddressAction {
191 IP_ALLOW = 1,
192 IP_DENY,
193 };
194
195 typedef struct IPAddressACL {
196 struct IPAddressACL *next;
197 enum IPAddressAction action;
198 /* These are in host order */
199 struct in_addr first;
200 struct in_addr last;
201 } IPAddressACL;
202
203 /* description of each stream of the avserver.conf file */
204 typedef struct FFStream {
205 enum StreamType stream_type;
206 char filename[1024]; /* stream filename */
207 struct FFStream *feed; /* feed we are using (can be null if
208 coming from file) */
209 AVDictionary *in_opts; /* input parameters */
210 AVInputFormat *ifmt; /* if non NULL, force input format */
211 AVOutputFormat *fmt;
212 IPAddressACL *acl;
213 char dynamic_acl[1024];
214 int nb_streams;
215 int prebuffer; /* Number of millseconds early to start */
216 int64_t max_time; /* Number of milliseconds to run */
217 int send_on_key;
218 AVStream *streams[MAX_STREAMS];
219 int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
220 char feed_filename[1024]; /* file name of the feed storage, or
221 input file name for a stream */
222 char author[512];
223 char title[512];
224 char copyright[512];
225 char comment[512];
226 pid_t pid; /* Of ffmpeg process */
227 time_t pid_start; /* Of ffmpeg process */
228 char **child_argv;
229 struct FFStream *next;
230 unsigned bandwidth; /* bandwidth, in kbits/s */
231 /* RTSP options */
232 char *rtsp_option;
233 /* multicast specific */
234 int is_multicast;
235 struct in_addr multicast_ip;
236 int multicast_port; /* first port used for multicast */
237 int multicast_ttl;
238 int loop; /* if true, send the stream in loops (only meaningful if file) */
239
240 /* feed specific */
241 int feed_opened; /* true if someone is writing to the feed */
242 int is_feed; /* true if it is a feed */
243 int readonly; /* True if writing is prohibited to the file */
244 int truncate; /* True if feeder connection truncate the feed file */
245 int conns_served;
246 int64_t bytes_served;
247 int64_t feed_max_size; /* maximum storage size, zero means unlimited */
248 int64_t feed_write_index; /* current write position in feed (it wraps around) */
249 int64_t feed_size; /* current size of feed */
250 struct FFStream *next_feed;
251 } FFStream;
252
253 typedef struct FeedData {
254 long long data_count;
255 float avg_frame_size; /* frame size averaged over last frames with exponential mean */
256 } FeedData;
257
258 static struct sockaddr_in my_http_addr;
259 static struct sockaddr_in my_rtsp_addr;
260
261 static char logfilename[1024];
262 static HTTPContext *first_http_ctx;
263 static FFStream *first_feed; /* contains only feeds */
264 static FFStream *first_stream; /* contains all streams, including feeds */
265
266 static void new_connection(int server_fd, int is_rtsp);
267 static void close_connection(HTTPContext *c);
268
269 /* HTTP handling */
270 static int handle_connection(HTTPContext *c);
271 static int http_parse_request(HTTPContext *c);
272 static int http_send_data(HTTPContext *c);
273 static void compute_status(HTTPContext *c);
274 static int open_input_stream(HTTPContext *c, const char *info);
275 static int http_start_receive_data(HTTPContext *c);
276 static int http_receive_data(HTTPContext *c);
277
278 /* RTSP handling */
279 static int rtsp_parse_request(HTTPContext *c);
280 static void rtsp_cmd_describe(HTTPContext *c, const char *url);
281 static void rtsp_cmd_options(HTTPContext *c, const char *url);
282 static void rtsp_cmd_setup(HTTPContext *c, const char *url, RTSPMessageHeader *h);
283 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h);
284 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h);
285 static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPMessageHeader *h);
286
287 /* SDP handling */
288 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
289 struct in_addr my_ip);
290
291 /* RTP handling */
292 static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
293 FFStream *stream, const char *session_id,
294 enum RTSPLowerTransport rtp_protocol);
295 static int rtp_new_av_stream(HTTPContext *c,
296 int stream_index, struct sockaddr_in *dest_addr,
297 HTTPContext *rtsp_c);
298
299 static const char *my_program_name;
300 static const char *my_program_dir;
301
302 static const char *config_filename = "/etc/avserver.conf";
303
304 static int avserver_debug;
305 static int avserver_daemon;
306 static int no_launch;
307 static int need_to_start_children;
308
309 /* maximum number of simultaneous HTTP connections */
310 static unsigned int nb_max_http_connections = 2000;
311 static unsigned int nb_max_connections = 5;
312 static unsigned int nb_connections;
313
314 static uint64_t max_bandwidth = 1000;
315 static uint64_t current_bandwidth;
316
317 static int64_t cur_time; // Making this global saves on passing it around everywhere
318
319 static AVLFG random_state;
320
321 static FILE *logfile = NULL;
322
323 void exit_program(int ret)
324 {
325 exit(ret);
326 }
327
328 /* FIXME: make avserver work with IPv6 */
329 /* resolve host with also IP address parsing */
330 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
331 {
332
333 if (!ff_inet_aton(hostname, sin_addr)) {
334 #if HAVE_GETADDRINFO
335 struct addrinfo *ai, *cur;
336 struct addrinfo hints;
337 memset(&hints, 0, sizeof(hints));
338 hints.ai_family = AF_INET;
339 if (getaddrinfo(hostname, NULL, &hints, &ai))
340 return -1;
341 /* getaddrinfo returns a linked list of addrinfo structs.
342 * Even if we set ai_family = AF_INET above, make sure
343 * that the returned one actually is of the correct type. */
344 for (cur = ai; cur; cur = cur->ai_next) {
345 if (cur->ai_family == AF_INET) {
346 *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
347 freeaddrinfo(ai);
348 return 0;
349 }
350 }
351 freeaddrinfo(ai);
352 return -1;
353 #else
354 struct hostent *hp;
355 hp = gethostbyname(hostname);
356 if (!hp)
357 return -1;
358 memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
359 #endif
360 }
361 return 0;
362 }
363
364 static char *ctime1(char *buf2)
365 {
366 time_t ti;
367 char *p;
368
369 ti = time(NULL);
370 p = ctime(&ti);
371 strcpy(buf2, p);
372 p = buf2 + strlen(p) - 1;
373 if (*p == '\n')
374 *p = '\0';
375 return buf2;
376 }
377
378 static void http_vlog(const char *fmt, va_list vargs)
379 {
380 static int print_prefix = 1;
381 if (logfile) {
382 if (print_prefix) {
383 char buf[32];
384 ctime1(buf);
385 fprintf(logfile, "%s ", buf);
386 }
387 print_prefix = strstr(fmt, "\n") != NULL;
388 vfprintf(logfile, fmt, vargs);
389 fflush(logfile);
390 }
391 }
392
393 #ifdef __GNUC__
394 __attribute__ ((format (printf, 1, 2)))
395 #endif
396 static void http_log(const char *fmt, ...)
397 {
398 va_list vargs;
399 va_start(vargs, fmt);
400 http_vlog(fmt, vargs);
401 va_end(vargs);
402 }
403
404 static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs)
405 {
406 static int print_prefix = 1;
407 AVClass *avc = ptr ? *(AVClass**)ptr : NULL;
408 if (level > av_log_get_level())
409 return;
410 if (print_prefix && avc)
411 http_log("[%s @ %p]", avc->item_name(ptr), ptr);
412 print_prefix = strstr(fmt, "\n") != NULL;
413 http_vlog(fmt, vargs);
414 }
415
416 static void log_connection(HTTPContext *c)
417 {
418 if (c->suppress_log)
419 return;
420
421 http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n",
422 inet_ntoa(c->from_addr.sin_addr), c->method, c->url,
423 c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
424 }
425
426 static void update_datarate(DataRateData *drd, int64_t count)
427 {
428 if (!drd->time1 && !drd->count1) {
429 drd->time1 = drd->time2 = cur_time;
430 drd->count1 = drd->count2 = count;
431 } else if (cur_time - drd->time2 > 5000) {
432 drd->time1 = drd->time2;
433 drd->count1 = drd->count2;
434 drd->time2 = cur_time;
435 drd->count2 = count;
436 }
437 }
438
439 /* In bytes per second */
440 static int compute_datarate(DataRateData *drd, int64_t count)
441 {
442 if (cur_time == drd->time1)
443 return 0;
444
445 return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
446 }
447
448
449 static void start_children(FFStream *feed)
450 {
451 if (no_launch)
452 return;
453
454 for (; feed; feed = feed->next) {
455 if (feed->child_argv && !feed->pid) {
456 feed->pid_start = time(0);
457
458 feed->pid = fork();
459
460 if (feed->pid < 0) {
461 http_log("Unable to create children\n");
462 exit(1);
463 }
464 if (!feed->pid) {
465 /* In child */
466 char pathname[1024];
467 char *slash;
468 int i;
469
470 av_strlcpy(pathname, my_program_name, sizeof(pathname));
471
472 slash = strrchr(pathname, '/');
473 if (!slash)
474 slash = pathname;
475 else
476 slash++;
477 strcpy(slash, "ffmpeg");
478
479 http_log("Launch commandline: ");
480 http_log("%s ", pathname);
481 for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++)
482 http_log("%s ", feed->child_argv[i]);
483 http_log("\n");
484
485 for (i = 3; i < 256; i++)
486 close(i);
487
488 if (!avserver_debug) {
489 i = open("/dev/null", O_RDWR);
490 if (i != -1) {
491 dup2(i, 0);
492 dup2(i, 1);
493 dup2(i, 2);
494 close(i);
495 }
496 }
497
498 /* This is needed to make relative pathnames work */
499 chdir(my_program_dir);
500
501 signal(SIGPIPE, SIG_DFL);
502
503 execvp(pathname, feed->child_argv);
504
505 _exit(1);
506 }
507 }
508 }
509 }
510
511 /* open a listening socket */
512 static int socket_open_listen(struct sockaddr_in *my_addr)
513 {
514 int server_fd, tmp;
515
516 server_fd = socket(AF_INET,SOCK_STREAM,0);
517 if (server_fd < 0) {
518 perror ("socket");
519 return -1;
520 }
521
522 tmp = 1;
523 setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
524
525 my_addr->sin_family = AF_INET;
526 if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
527 char bindmsg[32];
528 snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port));
529 perror (bindmsg);
530 closesocket(server_fd);
531 return -1;
532 }
533
534 if (listen (server_fd, 5) < 0) {
535 perror ("listen");
536 closesocket(server_fd);
537 return -1;
538 }
539 ff_socket_nonblock(server_fd, 1);
540
541 return server_fd;
542 }
543
544 /* start all multicast streams */
545 static void start_multicast(void)
546 {
547 FFStream *stream;
548 char session_id[32];
549 HTTPContext *rtp_c;
550 struct sockaddr_in dest_addr;
551 int default_port, stream_index;
552
553 default_port = 6000;
554 for(stream = first_stream; stream != NULL; stream = stream->next) {
555 if (stream->is_multicast) {
556 /* open the RTP connection */
557 snprintf(session_id, sizeof(session_id), "%08x%08x",
558 av_lfg_get(&random_state), av_lfg_get(&random_state));
559
560 /* choose a port if none given */
561 if (stream->multicast_port == 0) {
562 stream->multicast_port = default_port;
563 default_port += 100;
564 }
565
566 dest_addr.sin_family = AF_INET;
567 dest_addr.sin_addr = stream->multicast_ip;
568 dest_addr.sin_port = htons(stream->multicast_port);
569
570 rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
571 RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
572 if (!rtp_c)
573 continue;
574
575 if (open_input_stream(rtp_c, "") < 0) {
576 http_log("Could not open input stream for stream '%s'\n",
577 stream->filename);
578 continue;
579 }
580
581 /* open each RTP stream */
582 for(stream_index = 0; stream_index < stream->nb_streams;
583 stream_index++) {
584 dest_addr.sin_port = htons(stream->multicast_port +
585 2 * stream_index);
586 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) {
587 http_log("Could not open output stream '%s/streamid=%d'\n",
588 stream->filename, stream_index);
589 exit(1);
590 }
591 }
592
593 /* change state to send data */
594 rtp_c->state = HTTPSTATE_SEND_DATA;
595 }
596 }
597 }
598
599 /* main loop of the http server */
600 static int http_server(void)
601 {
602 int server_fd = 0, rtsp_server_fd = 0;
603 int ret, delay, delay1;
604 struct pollfd *poll_table, *poll_entry;
605 HTTPContext *c, *c_next;
606
607 if(!(poll_table = av_mallocz((nb_max_http_connections + 2)*sizeof(*poll_table)))) {
608 http_log("Impossible to allocate a poll table handling %d connections.\n", nb_max_http_connections);
609 return -1;
610 }
611
612 if (my_http_addr.sin_port) {
613 server_fd = socket_open_listen(&my_http_addr);
614 if (server_fd < 0)
615 return -1;
616 }
617
618 if (my_rtsp_addr.sin_port) {
619 rtsp_server_fd = socket_open_listen(&my_rtsp_addr);
620 if (rtsp_server_fd < 0)
621 return -1;
622 }
623
624 if (!rtsp_server_fd && !server_fd) {
625 http_log("HTTP and RTSP disabled.\n");
626 return -1;
627 }
628
629 http_log("AVserver started.\n");
630
631 start_children(first_feed);
632
633 start_multicast();
634
635 for(;;) {
636 poll_entry = poll_table;
637 if (server_fd) {
638 poll_entry->fd = server_fd;
639 poll_entry->events = POLLIN;
640 poll_entry++;
641 }
642 if (rtsp_server_fd) {
643 poll_entry->fd = rtsp_server_fd;
644 poll_entry->events = POLLIN;
645 poll_entry++;
646 }
647
648 /* wait for events on each HTTP handle */
649 c = first_http_ctx;
650 delay = 1000;
651 while (c != NULL) {
652 int fd;
653 fd = c->fd;
654 switch(c->state) {
655 case HTTPSTATE_SEND_HEADER:
656 case RTSPSTATE_SEND_REPLY:
657 case RTSPSTATE_SEND_PACKET:
658 c->poll_entry = poll_entry;
659 poll_entry->fd = fd;
660 poll_entry->events = POLLOUT;
661 poll_entry++;
662 break;
663 case HTTPSTATE_SEND_DATA_HEADER:
664 case HTTPSTATE_SEND_DATA:
665 case HTTPSTATE_SEND_DATA_TRAILER:
666 if (!c->is_packetized) {
667 /* for TCP, we output as much as we can (may need to put a limit) */
668 c->poll_entry = poll_entry;
669 poll_entry->fd = fd;
670 poll_entry->events = POLLOUT;
671 poll_entry++;
672 } else {
673 /* when avserver is doing the timing, we work by
674 looking at which packet need to be sent every
675 10 ms */
676 delay1 = 10; /* one tick wait XXX: 10 ms assumed */
677 if (delay1 < delay)
678 delay = delay1;
679 }
680 break;
681 case HTTPSTATE_WAIT_REQUEST:
682 case HTTPSTATE_RECEIVE_DATA:
683 case HTTPSTATE_WAIT_FEED:
684 case RTSPSTATE_WAIT_REQUEST:
685 /* need to catch errors */
686 c->poll_entry = poll_entry;
687 poll_entry->fd = fd;
688 poll_entry->events = POLLIN;/* Maybe this will work */
689 poll_entry++;
690 break;
691 default:
692 c->poll_entry = NULL;
693 break;
694 }
695 c = c->next;
696 }
697
698 /* wait for an event on one connection. We poll at least every
699 second to handle timeouts */
700 do {
701 ret = poll(poll_table, poll_entry - poll_table, delay);
702 if (ret < 0 && ff_neterrno() != AVERROR(EAGAIN) &&
703 ff_neterrno() != AVERROR(EINTR))
704 return -1;
705 } while (ret < 0);
706
707 cur_time = av_gettime() / 1000;
708
709 if (need_to_start_children) {
710 need_to_start_children = 0;
711 start_children(first_feed);
712 }
713
714 /* now handle the events */
715 for(c = first_http_ctx; c != NULL; c = c_next) {
716 c_next = c->next;
717 if (handle_connection(c) < 0) {
718 /* close and free the connection */
719 log_connection(c);
720 close_connection(c);
721 }
722 }
723
724 poll_entry = poll_table;
725 if (server_fd) {
726 /* new HTTP connection request ? */
727 if (poll_entry->revents & POLLIN)
728 new_connection(server_fd, 0);
729 poll_entry++;
730 }
731 if (rtsp_server_fd) {
732 /* new RTSP connection request ? */
733 if (poll_entry->revents & POLLIN)
734 new_connection(rtsp_server_fd, 1);
735 }
736 }
737 }
738
739 /* start waiting for a new HTTP/RTSP request */
740 static void start_wait_request(HTTPContext *c, int is_rtsp)
741 {
742 c->buffer_ptr = c->buffer;
743 c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
744
745 if (is_rtsp) {
746 c->timeout = cur_time + RTSP_REQUEST_TIMEOUT;
747 c->state = RTSPSTATE_WAIT_REQUEST;
748 } else {
749 c->timeout = cur_time + HTTP_REQUEST_TIMEOUT;
750 c->state = HTTPSTATE_WAIT_REQUEST;
751 }
752 }
753
754 static void http_send_too_busy_reply(int fd)
755 {
756 char buffer[300];
757 int len = snprintf(buffer, sizeof(buffer),
758 "HTTP/1.0 503 Server too busy\r\n"
759 "Content-type: text/html\r\n"
760 "\r\n"
761 "<html><head><title>Too busy</title></head><body>\r\n"
762 "<p>The server is too busy to serve your request at this time.</p>\r\n"
763 "<p>The number of current connections is %d, and this exceeds the limit of %d.</p>\r\n"
764 "</body></html>\r\n",
765 nb_connections, nb_max_connections);
766 send(fd, buffer, len, 0);
767 }
768
769
770 static void new_connection(int server_fd, int is_rtsp)
771 {
772 struct sockaddr_in from_addr;
773 int fd, len;
774 HTTPContext *c = NULL;
775
776 len = sizeof(from_addr);
777 fd = accept(server_fd, (struct sockaddr *)&from_addr,
778 &len);
779 if (fd < 0) {
780 http_log("error during accept %s\n", strerror(errno));
781 return;
782 }
783 ff_socket_nonblock(fd, 1);
784
785 if (nb_connections >= nb_max_connections) {
786 http_send_too_busy_reply(fd);
787 goto fail;
788 }
789
790 /* add a new connection */
791 c = av_mallocz(sizeof(HTTPContext));
792 if (!c)
793 goto fail;
794
795 c->fd = fd;
796 c->poll_entry = NULL;
797 c->from_addr = from_addr;
798 c->buffer_size = IOBUFFER_INIT_SIZE;
799 c->buffer = av_malloc(c->buffer_size);
800 if (!c->buffer)
801 goto fail;
802
803 c->next = first_http_ctx;
804 first_http_ctx = c;
805 nb_connections++;
806
807 start_wait_request(c, is_rtsp);
808
809 return;
810
811 fail:
812 if (c) {
813 av_free(c->buffer);
814 av_free(c);
815 }
816 closesocket(fd);
817 }
818
819 static void close_connection(HTTPContext *c)
820 {
821 HTTPContext **cp, *c1;
822 int i, nb_streams;
823 AVFormatContext *ctx;
824 URLContext *h;
825 AVStream *st;
826
827 /* remove connection from list */
828 cp = &first_http_ctx;
829 while ((*cp) != NULL) {
830 c1 = *cp;
831 if (c1 == c)
832 *cp = c->next;
833 else
834 cp = &c1->next;
835 }
836
837 /* remove references, if any (XXX: do it faster) */
838 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
839 if (c1->rtsp_c == c)
840 c1->rtsp_c = NULL;
841 }
842
843 /* remove connection associated resources */
844 if (c->fd >= 0)
845 closesocket(c->fd);
846 if (c->fmt_in) {
847 /* close each frame parser */
848 for(i=0;i<c->fmt_in->nb_streams;i++) {
849 st = c->fmt_in->streams[i];
850 if (st->codec->codec)
851 avcodec_close(st->codec);
852 }
853 av_close_input_file(c->fmt_in);
854 }
855
856 /* free RTP output streams if any */
857 nb_streams = 0;
858 if (c->stream)
859 nb_streams = c->stream->nb_streams;
860
861 for(i=0;i<nb_streams;i++) {
862 ctx = c->rtp_ctx[i];
863 if (ctx) {
864 av_write_trailer(ctx);
865 av_dict_free(&ctx->metadata);
866 av_free(ctx->streams[0]);
867 av_free(ctx);
868 }
869 h = c->rtp_handles[i];
870 if (h)
871 url_close(h);
872 }
873
874 ctx = &c->fmt_ctx;
875
876 if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) {
877 if (ctx->oformat) {
878 /* prepare header */
879 if (avio_open_dyn_buf(&ctx->pb) >= 0) {
880 av_write_trailer(ctx);
881 av_freep(&c->pb_buffer);
882 avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
883 }
884 }
885 }
886
887 for(i=0; i<ctx->nb_streams; i++)
888 av_free(ctx->streams[i]);
889
890 if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
891 current_bandwidth -= c->stream->bandwidth;
892
893 /* signal that there is no feed if we are the feeder socket */
894 if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
895 c->stream->feed_opened = 0;
896 close(c->feed_fd);
897 }
898
899 av_freep(&c->pb_buffer);
900 av_freep(&c->packet_buffer);
901 av_free(c->buffer);
902 av_free(c);
903 nb_connections--;
904 }
905
906 static int handle_connection(HTTPContext *c)
907 {
908 int len, ret;
909
910 switch(c->state) {
911 case HTTPSTATE_WAIT_REQUEST:
912 case RTSPSTATE_WAIT_REQUEST:
913 /* timeout ? */
914 if ((c->timeout - cur_time) < 0)
915 return -1;
916 if (c->poll_entry->revents & (POLLERR | POLLHUP))
917 return -1;
918
919 /* no need to read if no events */
920 if (!(c->poll_entry->revents & POLLIN))
921 return 0;
922 /* read the data */
923 read_loop:
924 len = recv(c->fd, c->buffer_ptr, 1, 0);
925 if (len < 0) {
926 if (ff_neterrno() != AVERROR(EAGAIN) &&
927 ff_neterrno() != AVERROR(EINTR))
928 return -1;
929 } else if (len == 0) {
930 return -1;
931 } else {
932 /* search for end of request. */
933 uint8_t *ptr;
934 c->buffer_ptr += len;
935 ptr = c->buffer_ptr;
936 if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
937 (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
938 /* request found : parse it and reply */
939 if (c->state == HTTPSTATE_WAIT_REQUEST) {
940 ret = http_parse_request(c);
941 } else {
942 ret = rtsp_parse_request(c);
943 }
944 if (ret < 0)
945 return -1;
946 } else if (ptr >= c->buffer_end) {
947 /* request too long: cannot do anything */
948 return -1;
949 } else goto read_loop;
950 }
951 break;
952
953 case HTTPSTATE_SEND_HEADER:
954 if (c->poll_entry->revents & (POLLERR | POLLHUP))
955 return -1;
956
957 /* no need to write if no events */
958 if (!(c->poll_entry->revents & POLLOUT))
959 return 0;
960 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
961 if (len < 0) {
962 if (ff_neterrno() != AVERROR(EAGAIN) &&
963 ff_neterrno() != AVERROR(EINTR)) {
964 /* error : close connection */
965 av_freep(&c->pb_buffer);
966 return -1;
967 }
968 } else {
969 c->buffer_ptr += len;
970 if (c->stream)
971 c->stream->bytes_served += len;
972 c->data_count += len;
973 if (c->buffer_ptr >= c->buffer_end) {
974 av_freep(&c->pb_buffer);
975 /* if error, exit */
976 if (c->http_error)
977 return -1;
978 /* all the buffer was sent : synchronize to the incoming stream */
979 c->state = HTTPSTATE_SEND_DATA_HEADER;
980 c->buffer_ptr = c->buffer_end = c->buffer;
981 }
982 }
983 break;
984
985 case HTTPSTATE_SEND_DATA:
986 case HTTPSTATE_SEND_DATA_HEADER:
987 case HTTPSTATE_SEND_DATA_TRAILER:
988 /* for packetized output, we consider we can always write (the
989 input streams sets the speed). It may be better to verify
990 that we do not rely too much on the kernel queues */
991 if (!c->is_packetized) {
992 if (c->poll_entry->revents & (POLLERR | POLLHUP))
993 return -1;
994
995 /* no need to read if no events */
996 if (!(c->poll_entry->revents & POLLOUT))
997 return 0;
998 }
999 if (http_send_data(c) < 0)
1000 return -1;
1001 /* close connection if trailer sent */
1002 if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
1003 return -1;
1004 break;
1005 case HTTPSTATE_RECEIVE_DATA:
1006 /* no need to read if no events */
1007 if (c->poll_entry->revents & (POLLERR | POLLHUP))
1008 return -1;
1009 if (!(c->poll_entry->revents & POLLIN))
1010 return 0;
1011 if (http_receive_data(c) < 0)
1012 return -1;
1013 break;
1014 case HTTPSTATE_WAIT_FEED:
1015 /* no need to read if no events */
1016 if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
1017 return -1;
1018
1019 /* nothing to do, we'll be waken up by incoming feed packets */
1020 break;
1021
1022 case RTSPSTATE_SEND_REPLY:
1023 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1024 av_freep(&c->pb_buffer);
1025 return -1;
1026 }
1027 /* no need to write if no events */
1028 if (!(c->poll_entry->revents & POLLOUT))
1029 return 0;
1030 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
1031 if (len < 0) {
1032 if (ff_neterrno() != AVERROR(EAGAIN) &&
1033 ff_neterrno() != AVERROR(EINTR)) {
1034 /* error : close connection */
1035 av_freep(&c->pb_buffer);
1036 return -1;
1037 }
1038 } else {
1039 c->buffer_ptr += len;
1040 c->data_count += len;
1041 if (c->buffer_ptr >= c->buffer_end) {
1042 /* all the buffer was sent : wait for a new request */
1043 av_freep(&c->pb_buffer);
1044 start_wait_request(c, 1);
1045 }
1046 }
1047 break;
1048 case RTSPSTATE_SEND_PACKET:
1049 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1050 av_freep(&c->packet_buffer);
1051 return -1;
1052 }
1053 /* no need to write if no events */
1054 if (!(c->poll_entry->revents & POLLOUT))
1055 return 0;
1056 len = send(c->fd, c->packet_buffer_ptr,
1057 c->packet_buffer_end - c->packet_buffer_ptr, 0);
1058 if (len < 0) {
1059 if (ff_neterrno() != AVERROR(EAGAIN) &&
1060 ff_neterrno() != AVERROR(EINTR)) {
1061 /* error : close connection */
1062 av_freep(&c->packet_buffer);
1063 return -1;
1064 }
1065 } else {
1066 c->packet_buffer_ptr += len;
1067 if (c->packet_buffer_ptr >= c->packet_buffer_end) {
1068 /* all the buffer was sent : wait for a new request */
1069 av_freep(&c->packet_buffer);
1070 c->state = RTSPSTATE_WAIT_REQUEST;
1071 }
1072 }
1073 break;
1074 case HTTPSTATE_READY:
1075 /* nothing to do */
1076 break;
1077 default:
1078 return -1;
1079 }
1080 return 0;
1081 }
1082
1083 static int extract_rates(char *rates, int ratelen, const char *request)
1084 {
1085 const char *p;
1086
1087 for (p = request; *p && *p != '\r' && *p != '\n'; ) {
1088 if (strncasecmp(p, "Pragma:", 7) == 0) {
1089 const char *q = p + 7;
1090
1091 while (*q && *q != '\n' && isspace(*q))
1092 q++;
1093
1094 if (strncasecmp(q, "stream-switch-entry=", 20) == 0) {
1095 int stream_no;
1096 int rate_no;
1097
1098 q += 20;
1099
1100 memset(rates, 0xff, ratelen);
1101
1102 while (1) {
1103 while (*q && *q != '\n' && *q != ':')
1104 q++;
1105
1106 if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
1107 break;
1108
1109 stream_no--;
1110 if (stream_no < ratelen && stream_no >= 0)
1111 rates[stream_no] = rate_no;
1112
1113 while (*q && *q != '\n' && !isspace(*q))
1114 q++;
1115 }
1116
1117 return 1;
1118 }
1119 }
1120 p = strchr(p, '\n');
1121 if (!p)
1122 break;
1123
1124 p++;
1125 }
1126
1127 return 0;
1128 }
1129
1130 static int find_stream_in_feed(FFStream *feed, AVCodecContext *codec, int bit_rate)
1131 {
1132 int i;
1133 int best_bitrate = 100000000;
1134 int best = -1;
1135
1136 for (i = 0; i < feed->nb_streams; i++) {
1137 AVCodecContext *feed_codec = feed->streams[i]->codec;
1138
1139 if (feed_codec->codec_id != codec->codec_id ||
1140 feed_codec->sample_rate != codec->sample_rate ||
1141 feed_codec->width != codec->width ||
1142 feed_codec->height != codec->height)
1143 continue;
1144
1145 /* Potential stream */
1146
1147 /* We want the fastest stream less than bit_rate, or the slowest
1148 * faster than bit_rate
1149 */
1150
1151 if (feed_codec->bit_rate <= bit_rate) {
1152 if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) {
1153 best_bitrate = feed_codec->bit_rate;
1154 best = i;
1155 }
1156 } else {
1157 if (feed_codec->bit_rate < best_bitrate) {
1158 best_bitrate = feed_codec->bit_rate;
1159 best = i;
1160 }
1161 }
1162 }
1163
1164 return best;
1165 }
1166
1167 static int modify_current_stream(HTTPContext *c, char *rates)
1168 {
1169 int i;
1170 FFStream *req = c->stream;
1171 int action_required = 0;
1172
1173 /* Not much we can do for a feed */
1174 if (!req->feed)
1175 return 0;
1176
1177 for (i = 0; i < req->nb_streams; i++) {
1178 AVCodecContext *codec = req->streams[i]->codec;
1179
1180 switch(rates[i]) {
1181 case 0:
1182 c->switch_feed_streams[i] = req->feed_streams[i];
1183 break;
1184 case 1:
1185 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
1186 break;
1187 case 2:
1188 /* Wants off or slow */
1189 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
1190 #ifdef WANTS_OFF
1191 /* This doesn't work well when it turns off the only stream! */
1192 c->switch_feed_streams[i] = -2;
1193 c->feed_streams[i] = -2;
1194 #endif
1195 break;
1196 }
1197
1198 if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i])
1199 action_required = 1;
1200 }
1201
1202 return action_required;
1203 }
1204
1205 /* XXX: factorize in utils.c ? */
1206 /* XXX: take care with different space meaning */
1207 static void skip_spaces(const char **pp)
1208 {
1209 const char *p;
1210 p = *pp;
1211 while (*p == ' ' || *p == '\t')
1212 p++;
1213 *pp = p;
1214 }
1215
1216 static void get_word(char *buf, int buf_size, const char **pp)
1217 {
1218 const char *p;
1219 char *q;
1220
1221 p = *pp;
1222 skip_spaces(&p);
1223 q = buf;
1224 while (!isspace(*p) && *p != '\0') {
1225 if ((q - buf) < buf_size - 1)
1226 *q++ = *p;
1227 p++;
1228 }
1229 if (buf_size > 0)
1230 *q = '\0';
1231 *pp = p;
1232 }
1233
1234 static void get_arg(char *buf, int buf_size, const char **pp)
1235 {
1236 const char *p;
1237 char *q;
1238 int quote;
1239
1240 p = *pp;
1241 while (isspace(*p)) p++;
1242 q = buf;
1243 quote = 0;
1244 if (*p == '\"' || *p == '\'')
1245 quote = *p++;
1246 for(;;) {
1247 if (quote) {
1248 if (*p == quote)
1249 break;
1250 } else {
1251 if (isspace(*p))
1252 break;
1253 }
1254 if (*p == '\0')
1255 break;
1256 if ((q - buf) < buf_size - 1)
1257 *q++ = *p;
1258 p++;
1259 }
1260 *q = '\0';
1261 if (quote && *p == quote)
1262 p++;
1263 *pp = p;
1264 }
1265
1266 static void parse_acl_row(FFStream *stream, FFStream* feed, IPAddressACL *ext_acl,
1267 const char *p, const char *filename, int line_num)
1268 {
1269 char arg[1024];
1270 IPAddressACL acl;
1271 int errors = 0;
1272
1273 get_arg(arg, sizeof(arg), &p);
1274 if (strcasecmp(arg, "allow") == 0)
1275 acl.action = IP_ALLOW;
1276 else if (strcasecmp(arg, "deny") == 0)
1277 acl.action = IP_DENY;
1278 else {
1279 fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
1280 filename, line_num, arg);
1281 errors++;
1282 }
1283
1284 get_arg(arg, sizeof(arg), &p);
1285
1286 if (resolve_host(&acl.first, arg) != 0) {
1287 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1288 filename, line_num, arg);
1289 errors++;
1290 } else
1291 acl.last = acl.first;
1292
1293 get_arg(arg, sizeof(arg), &p);
1294
1295 if (arg[0]) {
1296 if (resolve_host(&acl.last, arg) != 0) {
1297 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1298 filename, line_num, arg);
1299 errors++;
1300 }
1301 }
1302
1303 if (!errors) {
1304 IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
1305 IPAddressACL **naclp = 0;
1306
1307 acl.next = 0;
1308 *nacl = acl;
1309
1310 if (stream)
1311 naclp = &stream->acl;
1312 else if (feed)
1313 naclp = &feed->acl;
1314 else if (ext_acl)
1315 naclp = &ext_acl;
1316 else {
1317 fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
1318 filename, line_num);
1319 errors++;
1320 }
1321
1322 if (naclp) {
1323 while (*naclp)
1324 naclp = &(*naclp)->next;
1325
1326 *naclp = nacl;
1327 }
1328 }
1329 }
1330
1331
1332 static IPAddressACL* parse_dynamic_acl(FFStream *stream, HTTPContext *c)
1333 {
1334 FILE* f;
1335 char line[1024];
1336 char cmd[1024];
1337 IPAddressACL *acl = NULL;
1338 int line_num = 0;
1339 const char *p;
1340
1341 f = fopen(stream->dynamic_acl, "r");
1342 if (!f) {
1343 perror(stream->dynamic_acl);
1344 return NULL;
1345 }
1346
1347 acl = av_mallocz(sizeof(IPAddressACL));
1348
1349 /* Build ACL */
1350 for(;;) {
1351 if (fgets(line, sizeof(line), f) == NULL)
1352 break;
1353 line_num++;
1354 p = line;
1355 while (isspace(*p))
1356 p++;
1357 if (*p == '\0' || *p == '#')
1358 continue;
1359 get_arg(cmd, sizeof(cmd), &p);
1360
1361 if (!strcasecmp(cmd, "ACL"))
1362 parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num);
1363 }
1364 fclose(f);
1365 return acl;
1366 }
1367
1368
1369 static void free_acl_list(IPAddressACL *in_acl)
1370 {
1371 IPAddressACL *pacl,*pacl2;
1372
1373 pacl = in_acl;
1374 while(pacl) {
1375 pacl2 = pacl;
1376 pacl = pacl->next;
1377 av_freep(pacl2);
1378 }
1379 }
1380
1381 static int validate_acl_list(IPAddressACL *in_acl, HTTPContext *c)
1382 {
1383 enum IPAddressAction last_action = IP_DENY;
1384 IPAddressACL *acl;
1385 struct in_addr *src = &c->from_addr.sin_addr;
1386 unsigned long src_addr = src->s_addr;
1387
1388 for (acl = in_acl; acl; acl = acl->next) {
1389 if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
1390 return (acl->action == IP_ALLOW) ? 1 : 0;
1391 last_action = acl->action;
1392 }
1393
1394 /* Nothing matched, so return not the last action */
1395 return (last_action == IP_DENY) ? 1 : 0;
1396 }
1397
1398 static int validate_acl(FFStream *stream, HTTPContext *c)
1399 {
1400 int ret = 0;
1401 IPAddressACL *acl;
1402
1403
1404 /* if stream->acl is null validate_acl_list will return 1 */
1405 ret = validate_acl_list(stream->acl, c);
1406
1407 if (stream->dynamic_acl[0]) {
1408 acl = parse_dynamic_acl(stream, c);
1409
1410 ret = validate_acl_list(acl, c);
1411
1412 free_acl_list(acl);
1413 }
1414
1415 return ret;
1416 }
1417
1418 /* compute the real filename of a file by matching it without its
1419 extensions to all the stream filenames */
1420 static void compute_real_filename(char *filename, int max_size)
1421 {
1422 char file1[1024];
1423 char file2[1024];
1424 char *p;
1425 FFStream *stream;
1426
1427 /* compute filename by matching without the file extensions */
1428 av_strlcpy(file1, filename, sizeof(file1));
1429 p = strrchr(file1, '.');
1430 if (p)
1431 *p = '\0';
1432 for(stream = first_stream; stream != NULL; stream = stream->next) {
1433 av_strlcpy(file2, stream->filename, sizeof(file2));
1434 p = strrchr(file2, '.');
1435 if (p)
1436 *p = '\0';
1437 if (!strcmp(file1, file2)) {
1438 av_strlcpy(filename, stream->filename, max_size);
1439 break;
1440 }
1441 }
1442 }
1443
1444 enum RedirType {
1445 REDIR_NONE,
1446 REDIR_ASX,
1447 REDIR_RAM,
1448 REDIR_ASF,
1449 REDIR_RTSP,
1450 REDIR_SDP,
1451 };
1452
1453 /* parse http request and prepare header */
1454 static int http_parse_request(HTTPContext *c)
1455 {
1456 char *p;
1457 enum RedirType redir_type;
1458 char cmd[32];
1459 char info[1024], filename[1024];
1460 char url[1024], *q;
1461 char protocol[32];
1462 char msg[1024];
1463 const char *mime_type;
1464 FFStream *stream;
1465 int i;
1466 char ratebuf[32];
1467 char *useragent = 0;
1468
1469 p = c->buffer;
1470 get_word(cmd, sizeof(cmd), (const char **)&p);
1471 av_strlcpy(c->method, cmd, sizeof(c->method));
1472
1473 if (!strcmp(cmd, "GET"))
1474 c->post = 0;
1475 else if (!strcmp(cmd, "POST"))
1476 c->post = 1;
1477 else
1478 return -1;
1479
1480 get_word(url, sizeof(url), (const char **)&p);
1481 av_strlcpy(c->url, url, sizeof(c->url));
1482
1483 get_word(protocol, sizeof(protocol), (const char **)&p);
1484 if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
1485 return -1;
1486
1487 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
1488
1489 if (avserver_debug)
1490 http_log("%s - - New connection: %s %s\n", inet_ntoa(c->from_addr.sin_addr), cmd, url);
1491
1492 /* find the filename and the optional info string in the request */
1493 p = strchr(url, '?');
1494 if (p) {
1495 av_strlcpy(info, p, sizeof(info));
1496 *p = '\0';
1497 } else
1498 info[0] = '\0';
1499
1500 av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
1501
1502 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1503 if (strncasecmp(p, "User-Agent:", 11) == 0) {
1504 useragent = p + 11;
1505 if (*useragent && *useragent != '\n' && isspace(*useragent))
1506 useragent++;
1507 break;
1508 }
1509 p = strchr(p, '\n');
1510 if (!p)
1511 break;
1512
1513 p++;
1514 }
1515
1516 redir_type = REDIR_NONE;
1517 if (av_match_ext(filename, "asx")) {
1518 redir_type = REDIR_ASX;
1519 filename[strlen(filename)-1] = 'f';
1520 } else if (av_match_ext(filename, "asf") &&
1521 (!useragent || strncasecmp(useragent, "NSPlayer", 8) != 0)) {
1522 /* if this isn't WMP or lookalike, return the redirector file */
1523 redir_type = REDIR_ASF;
1524 } else if (av_match_ext(filename, "rpm,ram")) {
1525 redir_type = REDIR_RAM;
1526 strcpy(filename + strlen(filename)-2, "m");
1527 } else if (av_match_ext(filename, "rtsp")) {
1528 redir_type = REDIR_RTSP;
1529 compute_real_filename(filename, sizeof(filename) - 1);
1530 } else if (av_match_ext(filename, "sdp")) {
1531 redir_type = REDIR_SDP;
1532 compute_real_filename(filename, sizeof(filename) - 1);
1533 }
1534
1535 // "redirect" / request to index.html
1536 if (!strlen(filename))
1537 av_strlcpy(filename, "index.html", sizeof(filename) - 1);
1538
1539 stream = first_stream;
1540 while (stream != NULL) {
1541 if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
1542 break;
1543 stream = stream->next;
1544 }
1545 if (stream == NULL) {
1546 snprintf(msg, sizeof(msg), "File '%s' not found", url);
1547 http_log("File '%s' not found\n", url);
1548 goto send_error;
1549 }
1550
1551 c->stream = stream;
1552 memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
1553 memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
1554
1555 if (stream->stream_type == STREAM_TYPE_REDIRECT) {
1556 c->http_error = 301;
1557 q = c->buffer;
1558 q += snprintf(q, c->buffer_size,
1559 "HTTP/1.0 301 Moved\r\n"
1560 "Location: %s\r\n"
1561 "Content-type: text/html\r\n"
1562 "\r\n"
1563 "<html><head><title>Moved</title></head><body>\r\n"
1564 "You should be <a href=\"%s\">redirected</a>.\r\n"
1565 "</body></html>\r\n", stream->feed_filename, stream->feed_filename);
1566 /* prepare output buffer */
1567 c->buffer_ptr = c->buffer;
1568 c->buffer_end = q;
1569 c->state = HTTPSTATE_SEND_HEADER;
1570 return 0;
1571 }
1572
1573 /* If this is WMP, get the rate information */
1574 if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1575 if (modify_current_stream(c, ratebuf)) {
1576 for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) {
1577 if (c->switch_feed_streams[i] >= 0)
1578 c->switch_feed_streams[i] = -1;
1579 }
1580 }
1581 }
1582
1583 if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
1584 current_bandwidth += stream->bandwidth;
1585
1586 /* If already streaming this feed, do not let start another feeder. */
1587 if (stream->feed_opened) {
1588 snprintf(msg, sizeof(msg), "This feed is already being received.");
1589 http_log("Feed '%s' already being received\n", stream->feed_filename);
1590 goto send_error;
1591 }
1592
1593 if (c->post == 0 && max_bandwidth < current_bandwidth) {
1594 c->http_error = 503;
1595 q = c->buffer;
1596 q += snprintf(q, c->buffer_size,
1597 "HTTP/1.0 503 Server too busy\r\n"
1598 "Content-type: text/html\r\n"
1599 "\r\n"
1600 "<html><head><title>Too busy</title></head><body>\r\n"
1601 "<p>The server is too busy to serve your request at this time.</p>\r\n"
1602 "<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, "
1603 "and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n"
1604 "</body></html>\r\n", current_bandwidth, max_bandwidth);
1605 /* prepare output buffer */
1606 c->buffer_ptr = c->buffer;
1607 c->buffer_end = q;
1608 c->state = HTTPSTATE_SEND_HEADER;
1609 return 0;
1610 }
1611
1612 if (redir_type != REDIR_NONE) {
1613 char *hostinfo = 0;
1614
1615 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1616 if (strncasecmp(p, "Host:", 5) == 0) {
1617 hostinfo = p + 5;
1618 break;
1619 }
1620 p = strchr(p, '\n');
1621 if (!p)
1622 break;
1623
1624 p++;
1625 }
1626
1627 if (hostinfo) {
1628 char *eoh;
1629 char hostbuf[260];
1630
1631 while (isspace(*hostinfo))
1632 hostinfo++;
1633
1634 eoh = strchr(hostinfo, '\n');
1635 if (eoh) {
1636 if (eoh[-1] == '\r')
1637 eoh--;
1638
1639 if (eoh - hostinfo < sizeof(hostbuf) - 1) {
1640 memcpy(hostbuf, hostinfo, eoh - hostinfo);
1641 hostbuf[eoh - hostinfo] = 0;
1642
1643 c->http_error = 200;
1644 q = c->buffer;
1645 switch(redir_type) {
1646 case REDIR_ASX:
1647 q += snprintf(q, c->buffer_size,
1648 "HTTP/1.0 200 ASX Follows\r\n"
1649 "Content-type: video/x-ms-asf\r\n"
1650 "\r\n"
1651 "<ASX Version=\"3\">\r\n"
1652 //"<!-- Autogenerated by avserver -->\r\n"
1653 "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n"
1654 "</ASX>\r\n", hostbuf, filename, info);
1655 break;
1656 case REDIR_RAM:
1657 q += snprintf(q, c->buffer_size,
1658 "HTTP/1.0 200 RAM Follows\r\n"
1659 "Content-type: audio/x-pn-realaudio\r\n"
1660 "\r\n"
1661 "# Autogenerated by avserver\r\n"
1662 "http://%s/%s%s\r\n", hostbuf, filename, info);
1663 break;
1664 case REDIR_ASF:
1665 q += snprintf(q, c->buffer_size,
1666 "HTTP/1.0 200 ASF Redirect follows\r\n"
1667 "Content-type: video/x-ms-asf\r\n"
1668 "\r\n"
1669 "[Reference]\r\n"
1670 "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info);
1671 break;
1672 case REDIR_RTSP:
1673 {
1674 char hostname[256], *p;
1675 /* extract only hostname */
1676 av_strlcpy(hostname, hostbuf, sizeof(hostname));
1677 p = strrchr(hostname, ':');
1678 if (p)
1679 *p = '\0';
1680 q += snprintf(q, c->buffer_size,
1681 "HTTP/1.0 200 RTSP Redirect follows\r\n"
1682 /* XXX: incorrect mime type ? */
1683 "Content-type: application/x-rtsp\r\n"
1684 "\r\n"
1685 "rtsp://%s:%d/%s\r\n", hostname, ntohs(my_rtsp_addr.sin_port), filename);
1686 }
1687 break;
1688 case REDIR_SDP:
1689 {
1690 uint8_t *sdp_data;
1691 int sdp_data_size, len;
1692 struct sockaddr_in my_addr;
1693
1694 q += snprintf(q, c->buffer_size,
1695 "HTTP/1.0 200 OK\r\n"
1696 "Content-type: application/sdp\r\n"
1697 "\r\n");
1698
1699 len = sizeof(my_addr);
1700 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
1701
1702 /* XXX: should use a dynamic buffer */
1703 sdp_data_size = prepare_sdp_description(stream,
1704 &sdp_data,
1705 my_addr.sin_addr);
1706 if (sdp_data_size > 0) {
1707 memcpy(q, sdp_data, sdp_data_size);
1708 q += sdp_data_size;
1709 *q = '\0';
1710 av_free(sdp_data);
1711 }
1712 }
1713 break;
1714 default:
1715 abort();
1716 break;
1717 }
1718
1719 /* prepare output buffer */
1720 c->buffer_ptr = c->buffer;
1721 c->buffer_end = q;
1722 c->state = HTTPSTATE_SEND_HEADER;
1723 return 0;
1724 }
1725 }
1726 }
1727
1728 snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
1729 goto send_error;
1730 }
1731
1732 stream->conns_served++;
1733
1734 /* XXX: add there authenticate and IP match */
1735
1736 if (c->post) {
1737 /* if post, it means a feed is being sent */
1738 if (!stream->is_feed) {
1739 /* However it might be a status report from WMP! Let us log the
1740 * data as it might come in handy one day. */
1741 char *logline = 0;
1742 int client_id = 0;
1743
1744 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1745 if (strncasecmp(p, "Pragma: log-line=", 17) == 0) {
1746 logline = p;
1747 break;
1748 }
1749 if (strncasecmp(p, "Pragma: client-id=", 18) == 0)
1750 client_id = strtol(p + 18, 0, 10);
1751 p = strchr(p, '\n');
1752 if (!p)
1753 break;
1754
1755 p++;
1756 }
1757
1758 if (logline) {
1759 char *eol = strchr(logline, '\n');
1760
1761 logline += 17;
1762
1763 if (eol) {
1764 if (eol[-1] == '\r')
1765 eol--;
1766 http_log("%.*s\n", (int) (eol - logline), logline);
1767 c->suppress_log = 1;
1768 }
1769 }
1770
1771 #ifdef DEBUG
1772 http_log("\nGot request:\n%s\n", c->buffer);
1773 #endif
1774
1775 if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1776 HTTPContext *wmpc;
1777
1778 /* Now we have to find the client_id */
1779 for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
1780 if (wmpc->wmp_client_id == client_id)
1781 break;
1782 }
1783
1784 if (wmpc && modify_current_stream(wmpc, ratebuf))
1785 wmpc->switch_pending = 1;
1786 }
1787
1788 snprintf(msg, sizeof(msg), "POST command not handled");
1789 c->stream = 0;
1790 goto send_error;
1791 }
1792 if (http_start_receive_data(c) < 0) {
1793 snprintf(msg, sizeof(msg), "could not open feed");
1794 goto send_error;
1795 }
1796 c->http_error = 0;
1797 c->state = HTTPSTATE_RECEIVE_DATA;
1798 return 0;
1799 }
1800
1801 #ifdef DEBUG
1802 if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
1803 http_log("\nGot request:\n%s\n", c->buffer);
1804 #endif
1805
1806 if (c->stream->stream_type == STREAM_TYPE_STATUS)
1807 goto send_status;
1808
1809 /* open input stream */
1810 if (open_input_stream(c, info) < 0) {
1811 snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
1812 goto send_error;
1813 }
1814
1815 /* prepare http header */
1816 q = c->buffer;
1817 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 OK\r\n");
1818 mime_type = c->stream->fmt->mime_type;
1819 if (!mime_type)
1820 mime_type = "application/x-octet-stream";
1821 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Pragma: no-cache\r\n");
1822
1823 /* for asf, we need extra headers */
1824 if (!strcmp(c->stream->fmt->name,"asf_stream")) {
1825 /* Need to allocate a client id */
1826
1827 c->wmp_client_id = av_lfg_get(&random_state);
1828
1829 q += snprintf(q, q - (char *) 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);
1830 }
1831 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-Type: %s\r\n", mime_type);
1832 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1833
1834 /* prepare output buffer */
1835 c->http_error = 0;
1836 c->buffer_ptr = c->buffer;
1837 c->buffer_end = q;
1838 c->state = HTTPSTATE_SEND_HEADER;
1839 return 0;
1840 send_error:
1841 c->http_error = 404;
1842 q = c->buffer;
1843 q += snprintf(q, c->buffer_size,
1844 "HTTP/1.0 404 Not Found\r\n"
1845 "Content-type: text/html\r\n"
1846 "\r\n"
1847 "<html>\n"
1848 "<head><title>404 Not Found</title></head>\n"
1849 "<body>%s</body>\n"
1850 "</html>\n", msg);
1851 /* prepare output buffer */
1852 c->buffer_ptr = c->buffer;
1853 c->buffer_end = q;
1854 c->state = HTTPSTATE_SEND_HEADER;
1855 return 0;
1856 send_status:
1857 compute_status(c);
1858 c->http_error = 200; /* horrible : we use this value to avoid
1859 going to the send data state */
1860 c->state = HTTPSTATE_SEND_HEADER;
1861 return 0;
1862 }
1863
1864 static void fmt_bytecount(AVIOContext *pb, int64_t count)
1865 {
1866 static const char *suffix = " kMGTP";
1867 const char *s;
1868
1869 for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
1870
1871 avio_printf(pb, "%"PRId64"%c", count, *s);
1872 }
1873
1874 static void compute_status(HTTPContext *c)
1875 {
1876 HTTPContext *c1;
1877 FFStream *stream;
1878 char *p;
1879 time_t ti;
1880 int i, len;
1881 AVIOContext *pb;
1882
1883 if (avio_open_dyn_buf(&pb) < 0) {
1884 /* XXX: return an error ? */
1885 c->buffer_ptr = c->buffer;
1886 c->buffer_end = c->buffer;
1887 return;
1888 }
1889
1890 avio_printf(pb, "HTTP/1.0 200 OK\r\n");
1891 avio_printf(pb, "Content-type: %s\r\n", "text/html");
1892 avio_printf(pb, "Pragma: no-cache\r\n");
1893 avio_printf(pb, "\r\n");
1894
1895 avio_printf(pb, "<html><head><title>%s Status</title>\n", program_name);
1896 if (c->stream->feed_filename[0])
1897 avio_printf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename);
1898 avio_printf(pb, "</head>\n<body>");
1899 avio_printf(pb, "<h1>%s Status</h1>\n", program_name);
1900 /* format status */
1901 avio_printf(pb, "<h2>Available Streams</h2>\n");
1902 avio_printf(pb, "<table cellspacing=0 cellpadding=4>\n");
1903 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");
1904 stream = first_stream;
1905 while (stream != NULL) {
1906 char sfilename[1024];
1907 char *eosf;
1908
1909 if (stream->feed != stream) {
1910 av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
1911 eosf = sfilename + strlen(sfilename);
1912 if (eosf - sfilename >= 4) {
1913 if (strcmp(eosf - 4, ".asf") == 0)
1914 strcpy(eosf - 4, ".asx");
1915 else if (strcmp(eosf - 3, ".rm") == 0)
1916 strcpy(eosf - 3, ".ram");
1917 else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
1918 /* generate a sample RTSP director if
1919 unicast. Generate an SDP redirector if
1920 multicast */
1921 eosf = strrchr(sfilename, '.');
1922 if (!eosf)
1923 eosf = sfilename + strlen(sfilename);
1924 if (stream->is_multicast)
1925 strcpy(eosf, ".sdp");
1926 else
1927 strcpy(eosf, ".rtsp");
1928 }
1929 }
1930
1931 avio_printf(pb, "<tr><td><a href=\"/%s\">%s</a> ",
1932 sfilename, stream->filename);
1933 avio_printf(pb, "<td align=right> %d <td align=right> ",
1934 stream->conns_served);
1935 fmt_bytecount(pb, stream->bytes_served);
1936 switch(stream->stream_type) {
1937 case STREAM_TYPE_LIVE: {
1938 int audio_bit_rate = 0;
1939 int video_bit_rate = 0;
1940 const char *audio_codec_name = "";
1941 const char *video_codec_name = "";
1942 const char *audio_codec_name_extra = "";
1943 const char *video_codec_name_extra = "";
1944
1945 for(i=0;i<stream->nb_streams;i++) {
1946 AVStream *st = stream->streams[i];
1947 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
1948 switch(st->codec->codec_type) {
1949 case AVMEDIA_TYPE_AUDIO:
1950 audio_bit_rate += st->codec->bit_rate;
1951 if (codec) {
1952 if (*audio_codec_name)
1953 audio_codec_name_extra = "...";
1954 audio_codec_name = codec->name;
1955 }
1956 break;
1957 case AVMEDIA_TYPE_VIDEO:
1958 video_bit_rate += st->codec->bit_rate;
1959 if (codec) {
1960 if (*video_codec_name)
1961 video_codec_name_extra = "...";
1962 video_codec_name = codec->name;
1963 }
1964 break;
1965 case AVMEDIA_TYPE_DATA:
1966 video_bit_rate += st->codec->bit_rate;
1967 break;
1968 default:
1969 abort();
1970 }
1971 }
1972 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",
1973 stream->fmt->name,
1974 stream->bandwidth,
1975 video_bit_rate / 1000, video_codec_name, video_codec_name_extra,
1976 audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra);
1977 if (stream->feed)
1978 avio_printf(pb, "<td>%s", stream->feed->filename);
1979 else
1980 avio_printf(pb, "<td>%s", stream->feed_filename);
1981 avio_printf(pb, "\n");
1982 }
1983 break;
1984 default:
1985 avio_printf(pb, "<td align=center> - <td align=right> - <td align=right> - <td><td align=right> - <td>\n");
1986 break;
1987 }
1988 }
1989 stream = stream->next;
1990 }
1991 avio_printf(pb, "</table>\n");
1992
1993 stream = first_stream;
1994 while (stream != NULL) {
1995 if (stream->feed == stream) {
1996 avio_printf(pb, "<h2>Feed %s</h2>", stream->filename);
1997 if (stream->pid) {
1998 avio_printf(pb, "Running as pid %d.\n", stream->pid);
1999
2000 #if defined(linux) && !defined(CONFIG_NOCUTILS)
2001 {
2002 FILE *pid_stat;
2003 char ps_cmd[64];
2004
2005 /* This is somewhat linux specific I guess */
2006 snprintf(ps_cmd, sizeof(ps_cmd),
2007 "ps -o \"%%cpu,cputime\" --no-headers %d",
2008 stream->pid);
2009
2010 pid_stat = popen(ps_cmd, "r");
2011 if (pid_stat) {
2012 char cpuperc[10];
2013 char cpuused[64];
2014
2015 if (fscanf(pid_stat, "%10s %64s", cpuperc,
2016 cpuused) == 2) {
2017 avio_printf(pb, "Currently using %s%% of the cpu. Total time used %s.\n",
2018 cpuperc, cpuused);
2019 }
2020 fclose(pid_stat);
2021 }
2022 }
2023 #endif
2024
2025 avio_printf(pb, "<p>");
2026 }
2027 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");
2028
2029 for (i = 0; i < stream->nb_streams; i++) {
2030 AVStream *st = stream->streams[i];
2031 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
2032 const char *type = "unknown";
2033 char parameters[64];
2034
2035 parameters[0] = 0;
2036
2037 switch(st->codec->codec_type) {
2038 case AVMEDIA_TYPE_AUDIO:
2039 type = "audio";
2040 snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate);
2041 break;
2042 case AVMEDIA_TYPE_VIDEO:
2043 type = "video";
2044 snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height,
2045 st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num);
2046 break;
2047 default:
2048 abort();
2049 }
2050 avio_printf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n",
2051 i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters);
2052 }
2053 avio_printf(pb, "</table>\n");
2054
2055 }
2056 stream = stream->next;
2057 }
2058
2059 /* connection status */
2060 avio_printf(pb, "<h2>Connection Status</h2>\n");
2061
2062 avio_printf(pb, "Number of connections: %d / %d<br>\n",
2063 nb_connections, nb_max_connections);
2064
2065 avio_printf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n",
2066 current_bandwidth, max_bandwidth);
2067
2068 avio_printf(pb, "<table>\n");
2069 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");
2070 c1 = first_http_ctx;
2071 i = 0;
2072 while (c1 != NULL) {
2073 int bitrate;
2074 int j;
2075
2076 bitrate = 0;
2077 if (c1->stream) {
2078 for (j = 0; j < c1->stream->nb_streams; j++) {
2079 if (!c1->stream->feed)
2080 bitrate += c1->stream->streams[j]->codec->bit_rate;
2081 else if (c1->feed_streams[j] >= 0)
2082 bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate;
2083 }
2084 }
2085
2086 i++;
2087 p = inet_ntoa(c1->from_addr.sin_addr);
2088 avio_printf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td align=right>",
2089 i,
2090 c1->stream ? c1->stream->filename : "",
2091 c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
2092 p,
2093 c1->protocol,
2094 http_state[c1->state]);
2095 fmt_bytecount(pb, bitrate);
2096 avio_printf(pb, "<td align=right>");
2097 fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
2098 avio_printf(pb, "<td align=right>");
2099 fmt_bytecount(pb, c1->data_count);
2100 avio_printf(pb, "\n");
2101 c1 = c1->next;
2102 }
2103 avio_printf(pb, "</table>\n");
2104
2105 /* date */
2106 ti = time(NULL);
2107 p = ctime(&ti);
2108 avio_printf(pb, "<hr size=1 noshade>Generated at %s", p);
2109 avio_printf(pb, "</body>\n</html>\n");
2110
2111 len = avio_close_dyn_buf(pb, &c->pb_buffer);
2112 c->buffer_ptr = c->pb_buffer;
2113 c->buffer_end = c->pb_buffer + len;
2114 }
2115
2116 /* check if the parser needs to be opened for stream i */
2117 static void open_parser(AVFormatContext *s, int i)
2118 {
2119 AVStream *st = s->streams[i];
2120 AVCodec *codec;
2121
2122 if (!st->codec->codec) {
2123 codec = avcodec_find_decoder(st->codec->codec_id);
2124 if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
2125 st->codec->parse_only = 1;
2126 if (avcodec_open2(st->codec, codec, NULL) < 0)
2127 st->codec->parse_only = 0;
2128 }
2129 }
2130 }
2131
2132 static int open_input_stream(HTTPContext *c, const char *info)
2133 {
2134 char buf[128];
2135 char input_filename[1024];
2136 AVFormatContext *s = NULL;
2137 int i, ret;
2138 int64_t stream_pos;
2139
2140 /* find file name */
2141 if (c->stream->feed) {
2142 strcpy(input_filename, c->stream->feed->feed_filename);
2143 /* compute position (absolute time) */
2144 if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
2145 if ((ret = av_parse_time(&stream_pos, buf, 0)) < 0)
2146 return ret;
2147 } else if (av_find_info_tag(buf, sizeof(buf), "buffer", info)) {
2148 int prebuffer = strtol(buf, 0, 10);
2149 stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
2150 } else
2151 stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
2152 } else {
2153 strcpy(input_filename, c->stream->feed_filename);
2154 /* compute position (relative time) */
2155 if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
2156 if ((ret = av_parse_time(&stream_pos, buf, 1)) < 0)
2157 return ret;
2158 } else
2159 stream_pos = 0;
2160 }
2161 if (input_filename[0] == '\0')
2162 return -1;
2163
2164 /* open stream */
2165 if ((ret = avformat_open_input(&s, input_filename, c->stream->ifmt, &c->stream->in_opts)) < 0) {
2166 http_log("could not open %s: %d\n", input_filename, ret);
2167 return -1;
2168 }
2169 s->flags |= AVFMT_FLAG_GENPTS;
2170 c->fmt_in = s;
2171 if (strcmp(s->iformat->name, "ffm") && avformat_find_stream_info(c->fmt_in, NULL) < 0) {
2172 http_log("Could not find stream info '%s'\n", input_filename);
2173 av_close_input_file(s);
2174 return -1;
2175 }
2176
2177 /* open each parser */
2178 for(i=0;i<s->nb_streams;i++)
2179 open_parser(s, i);
2180
2181 /* choose stream as clock source (we favorize video stream if
2182 present) for packet sending */
2183 c->pts_stream_index = 0;
2184 for(i=0;i<c->stream->nb_streams;i++) {
2185 if (c->pts_stream_index == 0 &&
2186 c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2187 c->pts_stream_index = i;
2188 }
2189 }
2190
2191 if (c->fmt_in->iformat->read_seek)
2192 av_seek_frame(c->fmt_in, -1, stream_pos, 0);
2193 /* set the start time (needed for maxtime and RTP packet timing) */
2194 c->start_time = cur_time;
2195 c->first_pts = AV_NOPTS_VALUE;
2196 return 0;
2197 }
2198
2199 /* return the server clock (in us) */
2200 static int64_t get_server_clock(HTTPContext *c)
2201 {
2202 /* compute current pts value from system time */
2203 return (cur_time - c->start_time) * 1000;
2204 }
2205
2206 /* return the estimated time at which the current packet must be sent
2207 (in us) */
2208 static int64_t get_packet_send_clock(HTTPContext *c)
2209 {
2210 int bytes_left, bytes_sent, frame_bytes;
2211
2212 frame_bytes = c->cur_frame_bytes;
2213 if (frame_bytes <= 0)
2214 return c->cur_pts;
2215 else {
2216 bytes_left = c->buffer_end - c->buffer_ptr;
2217 bytes_sent = frame_bytes - bytes_left;
2218 return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
2219 }
2220 }
2221
2222
2223 static int http_prepare_data(HTTPContext *c)
2224 {
2225 int i, len, ret;
2226 AVFormatContext *ctx;
2227
2228 av_freep(&c->pb_buffer);
2229 switch(c->state) {
2230 case HTTPSTATE_SEND_DATA_HEADER:
2231 memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
2232 av_dict_set(&c->fmt_ctx.metadata, "author" , c->stream->author , 0);
2233 av_dict_set(&c->fmt_ctx.metadata, "comment" , c->stream->comment , 0);
2234 av_dict_set(&c->fmt_ctx.metadata, "copyright", c->stream->copyright, 0);
2235 av_dict_set(&c->fmt_ctx.metadata, "title" , c->stream->title , 0);
2236
2237 c->fmt_ctx.streams = av_mallocz(sizeof(AVStream *) * c->stream->nb_streams);
2238
2239 for(i=0;i<c->stream->nb_streams;i++) {
2240 AVStream *src;
2241 c->fmt_ctx.streams[i] = av_mallocz(sizeof(AVStream));
2242 /* if file or feed, then just take streams from FFStream struct */
2243 if (!c->stream->feed ||
2244 c->stream->feed == c->stream)
2245 src = c->stream->streams[i];
2246 else
2247 src = c->stream->feed->streams[c->stream->feed_streams[i]];
2248
2249 *(c->fmt_ctx.streams[i]) = *src;
2250 c->fmt_ctx.streams[i]->priv_data = 0;
2251 c->fmt_ctx.streams[i]->codec->frame_number = 0; /* XXX: should be done in
2252 AVStream, not in codec */
2253 }
2254 /* set output format parameters */
2255 c->fmt_ctx.oformat = c->stream->fmt;
2256 c->fmt_ctx.nb_streams = c->stream->nb_streams;
2257
2258 c->got_key_frame = 0;
2259
2260 /* prepare header and save header data in a stream */
2261 if (avio_open_dyn_buf(&c->fmt_ctx.pb) < 0) {
2262 /* XXX: potential leak */
2263 return -1;
2264 }
2265 c->fmt_ctx.pb->seekable = 0;
2266
2267 /*
2268 * HACK to avoid mpeg ps muxer to spit many underflow errors
2269 * Default value from Libav
2270 * Try to set it use configuration option
2271 */
2272 c->fmt_ctx.preload = (int)(0.5*AV_TIME_BASE);
2273 c->fmt_ctx.max_delay = (int)(0.7*AV_TIME_BASE);
2274
2275 if (avformat_write_header(&c->fmt_ctx, NULL) < 0) {
2276 http_log("Error writing output header\n");
2277 return -1;
2278 }
2279 av_dict_free(&c->fmt_ctx.metadata);
2280
2281 len = avio_close_dyn_buf(c->fmt_ctx.pb, &c->pb_buffer);
2282 c->buffer_ptr = c->pb_buffer;
2283 c->buffer_end = c->pb_buffer + len;
2284
2285 c->state = HTTPSTATE_SEND_DATA;
2286 c->last_packet_sent = 0;
2287 break;
2288 case HTTPSTATE_SEND_DATA:
2289 /* find a new packet */
2290 /* read a packet from the input stream */
2291 if (c->stream->feed)
2292 ffm_set_write_index(c->fmt_in,
2293 c->stream->feed->feed_write_index,
2294 c->stream->feed->feed_size);
2295
2296 if (c->stream->max_time &&
2297 c->stream->max_time + c->start_time - cur_time < 0)
2298 /* We have timed out */
2299 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2300 else {
2301 AVPacket pkt;
2302 redo:
2303 ret = av_read_frame(c->fmt_in, &pkt);
2304 if (ret < 0) {
2305 if (c->stream->feed) {
2306 /* if coming from feed, it means we reached the end of the
2307 ffm file, so must wait for more data */
2308 c->state = HTTPSTATE_WAIT_FEED;
2309 return 1; /* state changed */
2310 } else if (ret == AVERROR(EAGAIN)) {
2311 /* input not ready, come back later */
2312 return 0;
2313 } else {
2314 if (c->stream->loop) {
2315 av_close_input_file(c->fmt_in);
2316 c->fmt_in = NULL;
2317 if (open_input_stream(c, "") < 0)
2318 goto no_loop;
2319 goto redo;
2320 } else {
2321 no_loop:
2322 /* must send trailer now because eof or error */
2323 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2324 }
2325 }
2326 } else {
2327 int source_index = pkt.stream_index;
2328 /* update first pts if needed */
2329 if (c->first_pts == AV_NOPTS_VALUE) {
2330 c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q);
2331 c->start_time = cur_time;
2332 }
2333 /* send it to the appropriate stream */
2334 if (c->stream->feed) {
2335 /* if coming from a feed, select the right stream */
2336 if (c->switch_pending) {
2337 c->switch_pending = 0;
2338 for(i=0;i<c->stream->nb_streams;i++) {
2339 if (c->switch_feed_streams[i] == pkt.stream_index)
2340 if (pkt.flags & AV_PKT_FLAG_KEY)
2341 c->switch_feed_streams[i] = -1;
2342 if (c->switch_feed_streams[i] >= 0)
2343 c->switch_pending = 1;
2344 }
2345 }
2346 for(i=0;i<c->stream->nb_streams;i++) {
2347 if (c->stream->feed_streams[i] == pkt.stream_index) {
2348 AVStream *st = c->fmt_in->streams[source_index];
2349 pkt.stream_index = i;
2350 if (pkt.flags & AV_PKT_FLAG_KEY &&
2351 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2352 c->stream->nb_streams == 1))
2353 c->got_key_frame = 1;
2354 if (!c->stream->send_on_key || c->got_key_frame)
2355 goto send_it;
2356 }
2357 }
2358 } else {
2359 AVCodecContext *codec;
2360 AVStream *ist, *ost;
2361 send_it:
2362 ist = c->fmt_in->streams[source_index];
2363 /* specific handling for RTP: we use several
2364 output stream (one for each RTP
2365 connection). XXX: need more abstract handling */
2366 if (c->is_packetized) {
2367 /* compute send time and duration */
2368 c->cur_pts = av_rescale_q(pkt.dts, ist->time_base, AV_TIME_BASE_Q);
2369 c->cur_pts -= c->first_pts;
2370 c->cur_frame_duration = av_rescale_q(pkt.duration, ist->time_base, AV_TIME_BASE_Q);
2371 /* find RTP context */
2372 c->packet_stream_index = pkt.stream_index;
2373 ctx = c->rtp_ctx[c->packet_stream_index];
2374 if(!ctx) {
2375 av_free_packet(&pkt);
2376 break;
2377 }
2378 codec = ctx->streams[0]->codec;
2379 /* only one stream per RTP connection */
2380 pkt.stream_index = 0;
2381 } else {
2382 ctx = &c->fmt_ctx;
2383 /* Fudge here */
2384 codec = ctx->streams[pkt.stream_index]->codec;
2385 }
2386
2387 if (c->is_packetized) {
2388 int max_packet_size;
2389 if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP)
2390 max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
2391 else
2392 max_packet_size = url_get_max_packet_size(c->rtp_handles[c->packet_stream_index]);
2393 ret = ffio_open_dyn_packet_buf(&ctx->pb, max_packet_size);
2394 } else {
2395 ret = avio_open_dyn_buf(&ctx->pb);
2396 }
2397 if (ret < 0) {
2398 /* XXX: potential leak */
2399 return -1;
2400 }
2401 ost = ctx->streams[pkt.stream_index];
2402
2403 ctx->pb->seekable = 0;
2404 if (pkt.dts != AV_NOPTS_VALUE)
2405 pkt.dts = av_rescale_q(pkt.dts, ist->time_base, ost->time_base);
2406 if (pkt.pts != AV_NOPTS_VALUE)
2407 pkt.pts = av_rescale_q(pkt.pts, ist->time_base, ost->time_base);
2408 pkt.duration = av_rescale_q(pkt.duration, ist->time_base, ost->time_base);
2409 if (av_write_frame(ctx, &pkt) < 0) {
2410 http_log("Error writing frame to output\n");
2411 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2412 }
2413
2414 len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
2415 c->cur_frame_bytes = len;
2416 c->buffer_ptr = c->pb_buffer;
2417 c->buffer_end = c->pb_buffer + len;
2418
2419 codec->frame_number++;
2420 if (len == 0) {
2421 av_free_packet(&pkt);
2422 goto redo;
2423 }
2424 }
2425 av_free_packet(&pkt);
2426 }
2427 }
2428 break;
2429 default:
2430 case HTTPSTATE_SEND_DATA_TRAILER:
2431 /* last packet test ? */
2432 if (c->last_packet_sent || c->is_packetized)
2433 return -1;
2434 ctx = &c->fmt_ctx;
2435 /* prepare header */
2436 if (avio_open_dyn_buf(&ctx->pb) < 0) {
2437 /* XXX: potential leak */
2438 return -1;
2439 }
2440 c->fmt_ctx.pb->seekable = 0;
2441 av_write_trailer(ctx);
2442 len = avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
2443 c->buffer_ptr = c->pb_buffer;
2444 c->buffer_end = c->pb_buffer + len;
2445
2446 c->last_packet_sent = 1;
2447 break;
2448 }
2449 return 0;
2450 }
2451
2452 /* should convert the format at the same time */
2453 /* send data starting at c->buffer_ptr to the output connection
2454 (either UDP or TCP connection) */
2455 static int http_send_data(HTTPContext *c)
2456 {
2457 int len, ret;
2458
2459 for(;;) {
2460 if (c->buffer_ptr >= c->buffer_end) {
2461 ret = http_prepare_data(c);
2462 if (ret < 0)
2463 return -1;
2464 else if (ret != 0)
2465 /* state change requested */
2466 break;
2467 } else {
2468 if (c->is_packetized) {
2469 /* RTP data output */
2470 len = c->buffer_end - c->buffer_ptr;
2471 if (len < 4) {
2472 /* fail safe - should never happen */
2473 fail1:
2474 c->buffer_ptr = c->buffer_end;
2475 return 0;
2476 }
2477 len = (c->buffer_ptr[0] << 24) |
2478 (c->buffer_ptr[1] << 16) |
2479 (c->buffer_ptr[2] << 8) |
2480 (c->buffer_ptr[3]);
2481 if (len > (c->buffer_end - c->buffer_ptr))
2482 goto fail1;
2483 if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) {
2484 /* nothing to send yet: we can wait */
2485 return 0;
2486 }
2487
2488 c->data_count += len;
2489 update_datarate(&c->datarate, c->data_count);
2490 if (c->stream)
2491 c->stream->bytes_served += len;
2492
2493 if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) {
2494 /* RTP packets are sent inside the RTSP TCP connection */
2495 AVIOContext *pb;
2496 int interleaved_index, size;
2497 uint8_t header[4];
2498 HTTPContext *rtsp_c;
2499
2500 rtsp_c = c->rtsp_c;
2501 /* if no RTSP connection left, error */
2502 if (!rtsp_c)
2503 return -1;
2504 /* if already sending something, then wait. */
2505 if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST)
2506 break;
2507 if (avio_open_dyn_buf(&pb) < 0)
2508 goto fail1;
2509 interleaved_index = c->packet_stream_index * 2;
2510 /* RTCP packets are sent at odd indexes */
2511 if (c->buffer_ptr[1] == 200)
2512 interleaved_index++;
2513 /* write RTSP TCP header */
2514 header[0] = '$';
2515 header[1] = interleaved_index;
2516 header[2] = len >> 8;
2517 header[3] = len;
2518 avio_write(pb, header, 4);
2519 /* write RTP packet data */
2520 c->buffer_ptr += 4;
2521 avio_write(pb, c->buffer_ptr, len);
2522 size = avio_close_dyn_buf(pb, &c->packet_buffer);
2523 /* prepare asynchronous TCP sending */
2524 rtsp_c->packet_buffer_ptr = c->packet_buffer;
2525 rtsp_c->packet_buffer_end = c->packet_buffer + size;
2526 c->buffer_ptr += len;
2527
2528 /* send everything we can NOW */
2529 len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr,
2530 rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0);
2531 if (len > 0)
2532 rtsp_c->packet_buffer_ptr += len;
2533 if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) {
2534 /* if we could not send all the data, we will
2535 send it later, so a new state is needed to
2536 "lock" the RTSP TCP connection */
2537 rtsp_c->state = RTSPSTATE_SEND_PACKET;
2538 break;
2539 } else
2540 /* all data has been sent */
2541 av_freep(&c->packet_buffer);
2542 } else {
2543 /* send RTP packet directly in UDP */
2544 c->buffer_ptr += 4;
2545 url_write(c->rtp_handles[c->packet_stream_index],
2546 c->buffer_ptr, len);
2547 c->buffer_ptr += len;
2548 /* here we continue as we can send several packets per 10 ms slot */
2549 }
2550 } else {
2551 /* TCP data output */
2552 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
2553 if (len < 0) {
2554 if (ff_neterrno() != AVERROR(EAGAIN) &&
2555 ff_neterrno() != AVERROR(EINTR))
2556 /* error : close connection */
2557 return -1;
2558 else
2559 return 0;
2560 } else
2561 c->buffer_ptr += len;
2562
2563 c->data_count += len;
2564 update_datarate(&c->datarate, c->data_count);
2565 if (c->stream)
2566 c->stream->bytes_served += len;
2567 break;
2568 }
2569 }
2570 } /* for(;;) */
2571 return 0;
2572 }
2573
2574 static int http_start_receive_data(HTTPContext *c)
2575 {
2576 int fd;
2577
2578 if (c->stream->feed_opened)
2579 return -1;
2580
2581 /* Don't permit writing to this one */
2582 if (c->stream->readonly)
2583 return -1;
2584
2585 /* open feed */
2586 fd = open(c->stream->feed_filename, O_RDWR);
2587 if (fd < 0) {
2588 http_log("Error opening feeder file: %s\n", strerror(errno));
2589 return -1;
2590 }
2591 c->feed_fd = fd;
2592
2593 if (c->stream->truncate) {
2594 /* truncate feed file */
2595 ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE);
2596 ftruncate(c->feed_fd, FFM_PACKET_SIZE);
2597 http_log("Truncating feed file '%s'\n", c->stream->feed_filename);
2598 } else {
2599 if ((c->stream->feed_write_index = ffm_read_write_index(fd)) < 0) {
2600 http_log("Error reading write index from feed file: %s\n", strerror(errno));
2601 return -1;
2602 }
2603 }
2604
2605 c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE);
2606 c->stream->feed_size = lseek(fd, 0, SEEK_END);
2607 lseek(fd, 0, SEEK_SET);
2608
2609 /* init buffer input */
2610 c->buffer_ptr = c->buffer;
2611 c->buffer_end = c->buffer + FFM_PACKET_SIZE;
2612 c->stream->feed_opened = 1;
2613 c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked");
2614 return 0;
2615 }
2616
2617 static int http_receive_data(HTTPContext *c)
2618 {
2619 HTTPContext *c1;
2620 int len, loop_run = 0;
2621
2622 while (c->chunked_encoding && !c->chunk_size &&
2623 c->buffer_end > c->buffer_ptr) {
2624 /* read chunk header, if present */
2625 len = recv(c->fd, c->buffer_ptr, 1, 0);
2626
2627 if (len < 0) {
2628 if (ff_neterrno() != AVERROR(EAGAIN) &&
2629 ff_neterrno() != AVERROR(EINTR))
2630 /* error : close connection */
2631 goto fail;
2632 return 0;
2633 } else if (len == 0) {
2634 /* end of connection : close it */
2635 goto fail;
2636 } else if (c->buffer_ptr - c->buffer >= 2 &&
2637 !memcmp(c->buffer_ptr - 1, "\r\n", 2)) {
2638 c->chunk_size = strtol(c->buffer, 0, 16);
2639 if (c->chunk_size == 0) // end of stream
2640 goto fail;
2641 c->buffer_ptr = c->buffer;
2642 break;
2643 } else if (++loop_run > 10) {
2644 /* no chunk header, abort */
2645 goto fail;
2646 } else {
2647 c->buffer_ptr++;
2648 }
2649 }
2650
2651 if (c->buffer_end > c->buffer_ptr) {
2652 len = recv(c->fd, c->buffer_ptr,
2653 FFMIN(c->chunk_size, c->buffer_end - c->buffer_ptr), 0);
2654 if (len < 0) {
2655 if (ff_neterrno() != AVERROR(EAGAIN) &&
2656 ff_neterrno() != AVERROR(EINTR))
2657 /* error : close connection */
2658 goto fail;
2659 } else if (len == 0)
2660 /* end of connection : close it */
2661 goto fail;
2662 else {
2663 c->chunk_size -= len;
2664 c->buffer_ptr += len;
2665 c->data_count += len;
2666 update_datarate(&c->datarate, c->data_count);
2667 }
2668 }
2669
2670 if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) {
2671 if (c->buffer[0] != 'f' ||
2672 c->buffer[1] != 'm') {
2673 http_log("Feed stream has become desynchronized -- disconnecting\n");
2674 goto fail;
2675 }
2676 }
2677
2678 if (c->buffer_ptr >= c->buffer_end) {
2679 FFStream *feed = c->stream;
2680 /* a packet has been received : write it in the store, except
2681 if header */
2682 if (c->data_count > FFM_PACKET_SIZE) {
2683
2684 // printf("writing pos=0x%"PRIx64" size=0x%"PRIx64"\n", feed->feed_write_index, feed->feed_size);
2685 /* XXX: use llseek or url_seek */
2686 lseek(c->feed_fd, feed->feed_write_index, SEEK_SET);
2687 if (write(c->feed_fd, c->buffer, FFM_PACKET_SIZE) < 0) {
2688 http_log("Error writing to feed file: %s\n", strerror(errno));
2689 goto fail;
2690 }
2691
2692 feed->feed_write_index += FFM_PACKET_SIZE;
2693 /* update file size */
2694 if (feed->feed_write_index > c->stream->feed_size)
2695 feed->feed_size = feed->feed_write_index;
2696
2697 /* handle wrap around if max file size reached */
2698 if (c->stream->feed_max_size && feed->feed_write_index >= c->stream->feed_max_size)
2699 feed->feed_write_index = FFM_PACKET_SIZE;
2700
2701 /* write index */
2702 if (ffm_write_write_index(c->feed_fd, feed->feed_write_index) < 0) {
2703 http_log("Error writing index to feed file: %s\n", strerror(errno));
2704 goto fail;
2705 }
2706
2707 /* wake up any waiting connections */
2708 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2709 if (c1->state == HTTPSTATE_WAIT_FEED &&
2710 c1->stream->feed == c->stream->feed)
2711 c1->state = HTTPSTATE_SEND_DATA;
2712 }
2713 } else {
2714 /* We have a header in our hands that contains useful data */
2715 AVFormatContext *s = avformat_alloc_context();
2716 AVIOContext *pb;
2717 AVInputFormat *fmt_in;
2718 int i;
2719
2720 if (!s)
2721 goto fail;
2722
2723 /* use feed output format name to find corresponding input format */
2724 fmt_in = av_find_input_format(feed->fmt->name);
2725 if (!fmt_in)
2726 goto fail;
2727
2728 pb = avio_alloc_context(c->buffer, c->buffer_end - c->buffer,
2729 0, NULL, NULL, NULL, NULL);
2730 pb->seekable = 0;
2731
2732 s->pb = pb;
2733 if (avformat_open_input(&s, c->stream->feed_filename, fmt_in, NULL) < 0) {
2734 av_free(pb);
2735 goto fail;
2736 }
2737
2738 /* Now we have the actual streams */
2739 if (s->nb_streams != feed->nb_streams) {
2740 av_close_input_stream(s);
2741 av_free(pb);
2742 http_log("Feed '%s' stream number does not match registered feed\n",
2743 c->stream->feed_filename);
2744 goto fail;
2745 }
2746
2747 for (i = 0; i < s->nb_streams; i++) {
2748 AVStream *fst = feed->streams[i];
2749 AVStream *st = s->streams[i];
2750 avcodec_copy_context(fst->codec, st->codec);
2751 }
2752
2753 av_close_input_stream(s);
2754 av_free(pb);
2755 }
2756 c->buffer_ptr = c->buffer;
2757 }
2758
2759 return 0;
2760 fail:
2761 c->stream->feed_opened = 0;
2762 close(c->feed_fd);
2763 /* wake up any waiting connections to stop waiting for feed */
2764 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2765 if (c1->state == HTTPSTATE_WAIT_FEED &&
2766 c1->stream->feed == c->stream->feed)
2767 c1->state = HTTPSTATE_SEND_DATA_TRAILER;
2768 }
2769 return -1;
2770 }
2771
2772 /********************************************************************/
2773 /* RTSP handling */
2774
2775 static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number)
2776 {
2777 const char *str;
2778 time_t ti;
2779 struct tm *tm;
2780 char buf2[32];
2781
2782 switch(error_number) {
2783 case RTSP_STATUS_OK:
2784 str = "OK";
2785 break;
2786 case RTSP_STATUS_METHOD:
2787 str = "Method Not Allowed";
2788 break;
2789 case RTSP_STATUS_BANDWIDTH:
2790 str = "Not Enough Bandwidth";
2791 break;
2792 case RTSP_STATUS_SESSION:
2793 str = "Session Not Found";
2794 break;
2795 case RTSP_STATUS_STATE:
2796 str = "Method Not Valid in This State";
2797 break;
2798 case RTSP_STATUS_AGGREGATE:
2799 str = "Aggregate operation not allowed";
2800 break;
2801 case RTSP_STATUS_ONLY_AGGREGATE:
2802 str = "Only aggregate operation allowed";
2803 break;
2804 case RTSP_STATUS_TRANSPORT:
2805 str = "Unsupported transport";
2806 break;
2807 case RTSP_STATUS_INTERNAL:
2808 str = "Internal Server Error";
2809 break;
2810 case RTSP_STATUS_SERVICE:
2811 str = "Service Unavailable";
2812 break;
2813 case RTSP_STATUS_VERSION:
2814 str = "RTSP Version not supported";
2815 break;
2816 default:
2817 str = "Unknown Error";
2818 break;
2819 }
2820
2821 avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str);
2822 avio_printf(c->pb, "CSeq: %d\r\n", c->seq);
2823
2824 /* output GMT time */
2825 ti = time(NULL);
2826 tm = gmtime(&ti);
2827 strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm);
2828 avio_printf(c->pb, "Date: %s GMT\r\n", buf2);
2829 }
2830
2831 static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number)
2832 {
2833 rtsp_reply_header(c, error_number);
2834 avio_printf(c->pb, "\r\n");
2835 }
2836
2837 static int rtsp_parse_request(HTTPContext *c)
2838 {
2839 const char *p, *p1, *p2;
2840 char cmd[32];
2841 char url[1024];
2842 char protocol[32];
2843 char line[1024];
2844 int len;
2845 RTSPMessageHeader header1, *header = &header1;
2846
2847 c->buffer_ptr[0] = '\0';
2848 p = c->buffer;
2849
2850 get_word(cmd, sizeof(cmd), &p);
2851 get_word(url, sizeof(url), &p);
2852 get_word(protocol, sizeof(protocol), &p);
2853
2854 av_strlcpy(c->method, cmd, sizeof(c->method));
2855 av_strlcpy(c->url, url, sizeof(c->url));
2856 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
2857
2858 if (avio_open_dyn_buf(&c->pb) < 0) {
2859 /* XXX: cannot do more */
2860 c->pb = NULL; /* safety */
2861 return -1;
2862 }
2863
2864 /* check version name */
2865 if (strcmp(protocol, "RTSP/1.0") != 0) {
2866 rtsp_reply_error(c, RTSP_STATUS_VERSION);
2867 goto the_end;
2868 }
2869
2870 /* parse each header line */
2871 memset(header, 0, sizeof(*header));
2872 /* skip to next line */
2873 while (*p != '\n' && *p != '\0')
2874 p++;
2875 if (*p == '\n')
2876 p++;
2877 while (*p != '\0') {
2878 p1 = memchr(p, '\n', (char *)c->buffer_ptr - p);
2879 if (!p1)
2880 break;
2881 p2 = p1;
2882 if (p2 > p && p2[-1] == '\r')
2883 p2--;
2884 /* skip empty line */
2885 if (p2 == p)
2886 break;
2887 len = p2 - p;
2888 if (len > sizeof(line) - 1)
2889 len = sizeof(line) - 1;
2890 memcpy(line, p, len);
2891 line[len] = '\0';
2892 ff_rtsp_parse_line(header, line, NULL, NULL);
2893 p = p1 + 1;
2894 }
2895
2896 /* handle sequence number */
2897 c->seq = header->seq;
2898
2899 if (!strcmp(cmd, "DESCRIBE"))
2900 rtsp_cmd_describe(c, url);
2901 else if (!strcmp(cmd, "OPTIONS"))
2902 rtsp_cmd_options(c, url);
2903 else if (!strcmp(cmd, "SETUP"))
2904 rtsp_cmd_setup(c, url, header);
2905 else if (!strcmp(cmd, "PLAY"))
2906 rtsp_cmd_play(c, url, header);
2907 else if (!strcmp(cmd, "PAUSE"))
2908 rtsp_cmd_pause(c, url, header);
2909 else if (!strcmp(cmd, "TEARDOWN"))
2910 rtsp_cmd_teardown(c, url, header);
2911 else
2912 rtsp_reply_error(c, RTSP_STATUS_METHOD);
2913
2914 the_end:
2915 len = avio_close_dyn_buf(c->pb, &c->pb_buffer);
2916 c->pb = NULL; /* safety */
2917 if (len < 0) {
2918 /* XXX: cannot do more */
2919 return -1;
2920 }
2921 c->buffer_ptr = c->pb_buffer;
2922 c->buffer_end = c->pb_buffer + len;
2923 c->state = RTSPSTATE_SEND_REPLY;
2924 return 0;
2925 }
2926
2927 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
2928 struct in_addr my_ip)
2929 {
2930 AVFormatContext *avc;
2931 AVStream *avs = NULL;
2932 int i;
2933
2934 avc = avformat_alloc_context();
2935 if (avc == NULL) {
2936 return -1;
2937 }
2938 av_dict_set(&avc->metadata, "title",
2939 stream->title[0] ? stream->title : "No Title", 0);
2940 avc->nb_streams = stream->nb_streams;
2941 if (stream->is_multicast) {
2942 snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d",
2943 inet_ntoa(stream->multicast_ip),
2944 stream->multicast_port, stream->multicast_ttl);
2945 } else {
2946 snprintf(avc->filename, 1024, "rtp://0.0.0.0");
2947 }
2948
2949 if (avc->nb_streams >= INT_MAX/sizeof(*avc->streams) ||
2950 !(avc->streams = av_malloc(avc->nb_streams * sizeof(*avc->streams))))
2951 goto sdp_done;
2952 if (avc->nb_streams >= INT_MAX/sizeof(*avs) ||
2953 !(avs = av_malloc(avc->nb_streams * sizeof(*avs))))
2954 goto sdp_done;
2955
2956 for(i = 0; i < stream->nb_streams; i++) {
2957 avc->streams[i] = &avs[i];
2958 avc->streams[i]->codec = stream->streams[i]->codec;
2959 }
2960 *pbuffer = av_mallocz(2048);
2961 av_sdp_create(&avc, 1, *pbuffer, 2048);
2962
2963 sdp_done:
2964 av_free(avc->streams);
2965 av_dict_free(&avc->metadata);
2966 av_free(avc);
2967 av_free(avs);
2968
2969 return strlen(*pbuffer);
2970 }
2971
2972 static void rtsp_cmd_options(HTTPContext *c, const char *url)
2973 {
2974 // rtsp_reply_header(c, RTSP_STATUS_OK);
2975 avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK");
2976 avio_printf(c->pb, "CSeq: %d\r\n", c->seq);
2977 avio_printf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
2978 avio_printf(c->pb, "\r\n");
2979 }
2980
2981 static void rtsp_cmd_describe(HTTPContext *c, const char *url)
2982 {
2983 FFStream *stream;
2984 char path1[1024];
2985 const char *path;
2986 uint8_t *content;
2987 int content_length, len;
2988 struct sockaddr_in my_addr;
2989
2990 /* find which url is asked */
2991 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2992 path = path1;
2993 if (*path == '/')
2994 path++;
2995
2996 for(stream = first_stream; stream != NULL; stream = stream->next) {
2997 if (!stream->is_feed &&
2998 stream->fmt && !strcmp(stream->fmt->name, "rtp") &&
2999 !strcmp(path, stream->filename)) {
3000 goto found;
3001 }
3002 }
3003 /* no stream found */
3004 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
3005 return;
3006
3007 found:
3008 /* prepare the media description in sdp format */
3009
3010 /* get the host IP */
3011 len = sizeof(my_addr);
3012 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
3013 content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr);
3014 if (content_length < 0) {
3015 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3016 return;
3017 }
3018 rtsp_reply_header(c, RTSP_STATUS_OK);
3019 avio_printf(c->pb, "Content-Base: %s/\r\n", url);
3020 avio_printf(c->pb, "Content-Type: application/sdp\r\n");
3021 avio_printf(c->pb, "Content-Length: %d\r\n", content_length);
3022 avio_printf(c->pb, "\r\n");
3023 avio_write(c->pb, content, content_length);
3024 av_free(content);
3025 }
3026
3027 static HTTPContext *find_rtp_session(const char *session_id)
3028 {
3029 HTTPContext *c;
3030
3031 if (session_id[0] == '\0')
3032 return NULL;
3033
3034 for(c = first_http_ctx; c != NULL; c = c->next) {
3035 if (!strcmp(c->session_id, session_id))
3036 return c;
3037 }
3038 return NULL;
3039 }
3040
3041 static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport)
3042 {
3043 RTSPTransportField *th;
3044 int i;
3045
3046 for(i=0;i<h->nb_transports;i++) {
3047 th = &h->transports[i];
3048 if (th->lower_transport == lower_transport)
3049 return th;
3050 }
3051 return NULL;
3052 }
3053
3054 static void rtsp_cmd_setup(HTTPContext *c, const char *url,
3055 RTSPMessageHeader *h)
3056 {
3057 FFStream *stream;
3058 int stream_index, rtp_port, rtcp_port;
3059 char buf[1024];
3060 char path1[1024];
3061 const char *path;
3062 HTTPContext *rtp_c;
3063 RTSPTransportField *th;
3064 struct sockaddr_in dest_addr;
3065 RTSPActionServerSetup setup;
3066
3067 /* find which url is asked */
3068 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3069 path = path1;
3070 if (*path == '/')
3071 path++;
3072
3073 /* now check each stream */
3074 for(stream = first_stream; stream != NULL; stream = stream->next) {
3075 if (!stream->is_feed &&
3076 stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
3077 /* accept aggregate filenames only if single stream */
3078 if (!strcmp(path, stream->filename)) {
3079 if (stream->nb_streams != 1) {
3080 rtsp_reply_error(c, RTSP_STATUS_AGGREGATE);
3081 return;
3082 }
3083 stream_index = 0;
3084 goto found;
3085 }
3086
3087 for(stream_index = 0; stream_index < stream->nb_streams;
3088 stream_index++) {
3089 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3090 stream->filename, stream_index);
3091 if (!strcmp(path, buf))
3092 goto found;
3093 }
3094 }
3095 }
3096 /* no stream found */
3097 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
3098 return;
3099 found:
3100
3101 /* generate session id if needed */
3102 if (h->session_id[0] == '\0')
3103 snprintf(h->session_id, sizeof(h->session_id), "%08x%08x",
3104 av_lfg_get(&random_state), av_lfg_get(&random_state));
3105
3106 /* find rtp session, and create it if none found */
3107 rtp_c = find_rtp_session(h->session_id);
3108 if (!rtp_c) {
3109 /* always prefer UDP */
3110 th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP);
3111 if (!th) {
3112 th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP);
3113 if (!th) {
3114 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3115 return;
3116 }
3117 }
3118
3119 rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id,
3120 th->lower_transport);
3121 if (!rtp_c) {
3122 rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH);
3123 return;
3124 }
3125
3126 /* open input stream */
3127 if (open_input_stream(rtp_c, "") < 0) {
3128 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3129 return;
3130 }
3131 }
3132
3133 /* test if stream is OK (test needed because several SETUP needs
3134 to be done for a given file) */
3135 if (rtp_c->stream != stream) {
3136 rtsp_reply_error(c, RTSP_STATUS_SERVICE);
3137 return;
3138 }
3139
3140 /* test if stream is already set up */
3141 if (rtp_c->rtp_ctx[stream_index]) {
3142 rtsp_reply_error(c, RTSP_STATUS_STATE);
3143 return;
3144 }
3145
3146 /* check transport */
3147 th = find_transport(h, rtp_c->rtp_protocol);
3148 if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
3149 th->client_port_min <= 0)) {
3150 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3151 return;
3152 }
3153
3154 /* setup default options */
3155 setup.transport_option[0] = '\0';
3156 dest_addr = rtp_c->from_addr;
3157 dest_addr.sin_port = htons(th->client_port_min);
3158
3159 /* setup stream */
3160 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) {
3161 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3162 return;
3163 }
3164
3165 /* now everything is OK, so we can send the connection parameters */
3166 rtsp_reply_header(c, RTSP_STATUS_OK);
3167 /* session ID */
3168 avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3169
3170 switch(rtp_c->rtp_protocol) {
3171 case RTSP_LOWER_TRANSPORT_UDP:
3172 rtp_port = rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]);
3173 rtcp_port = rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]);
3174 avio_printf(c->pb, "Transport: RTP/AVP/UDP;unicast;"
3175 "client_port=%d-%d;server_port=%d-%d",
3176 th->client_port_min, th->client_port_max,
3177 rtp_port, rtcp_port);
3178 break;
3179 case RTSP_LOWER_TRANSPORT_TCP:
3180 avio_printf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d",
3181 stream_index * 2, stream_index * 2 + 1);
3182 break;
3183 default:
3184 break;
3185 }
3186 if (setup.transport_option[0] != '\0')
3187 avio_printf(c->pb, ";%s", setup.transport_option);
3188 avio_printf(c->pb, "\r\n");
3189
3190
3191 avio_printf(c->pb, "\r\n");
3192 }
3193
3194
3195 /* find an rtp connection by using the session ID. Check consistency
3196 with filename */
3197 static HTTPContext *find_rtp_session_with_url(const char *url,
3198 const char *session_id)
3199 {
3200 HTTPContext *rtp_c;
3201 char path1[1024];
3202 const char *path;
3203 char buf[1024];
3204 int s, len;
3205
3206 rtp_c = find_rtp_session(session_id);
3207 if (!rtp_c)
3208 return NULL;
3209
3210 /* find which url is asked */
3211 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3212 path = path1;
3213 if (*path == '/')
3214 path++;
3215 if(!strcmp(path, rtp_c->stream->filename)) return rtp_c;
3216 for(s=0; s<rtp_c->stream->nb_streams; ++s) {
3217 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3218 rtp_c->stream->filename, s);
3219 if(!strncmp(path, buf, sizeof(buf))) {
3220 // XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1?
3221 return rtp_c;
3222 }
3223 }
3224 len = strlen(path);
3225 if (len > 0 && path[len - 1] == '/' &&
3226 !strncmp(path, rtp_c->stream->filename, len - 1))
3227 return rtp_c;
3228 return NULL;
3229 }
3230
3231 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3232 {
3233 HTTPContext *rtp_c;
3234
3235 rtp_c = find_rtp_session_with_url(url, h->session_id);
3236 if (!rtp_c) {
3237 rtsp_reply_error(c, RTSP_STATUS_SESSION);
3238 return;
3239 }
3240
3241 if (rtp_c->state != HTTPSTATE_SEND_DATA &&