Replace more FFmpeg instances by Libav or ffmpeg.
[libav.git] / ffserver.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 #define _XOPEN_SOURCE 600
23
24 #include "config.h"
25 #if !HAVE_CLOSESOCKET
26 #define closesocket close
27 #endif
28 #include <string.h>
29 #include <strings.h>
30 #include <stdlib.h>
31 #include "libavformat/avformat.h"
32 #include "libavformat/ffm.h"
33 #include "libavformat/network.h"
34 #include "libavformat/os_support.h"
35 #include "libavformat/rtpdec.h"
36 #include "libavformat/rtsp.h"
37 // XXX for ffio_open_dyn_packet_buffer, to be removed
38 #include "libavformat/avio_internal.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/lfg.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[] = "FFserver";
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 ffserver.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 AVFormatParameters *ap_in; /* 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/ffserver.conf";
303
304 static int ffserver_debug;
305 static int ffserver_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 /* FIXME: make ffserver work with IPv6 */
324 /* resolve host with also IP address parsing */
325 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
326 {
327
328 if (!ff_inet_aton(hostname, sin_addr)) {
329 #if HAVE_GETADDRINFO
330 struct addrinfo *ai, *cur;
331 struct addrinfo hints;
332 memset(&hints, 0, sizeof(hints));
333 hints.ai_family = AF_INET;
334 if (getaddrinfo(hostname, NULL, &hints, &ai))
335 return -1;
336 /* getaddrinfo returns a linked list of addrinfo structs.
337 * Even if we set ai_family = AF_INET above, make sure
338 * that the returned one actually is of the correct type. */
339 for (cur = ai; cur; cur = cur->ai_next) {
340 if (cur->ai_family == AF_INET) {
341 *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
342 freeaddrinfo(ai);
343 return 0;
344 }
345 }
346 freeaddrinfo(ai);
347 return -1;
348 #else
349 struct hostent *hp;
350 hp = gethostbyname(hostname);
351 if (!hp)
352 return -1;
353 memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
354 #endif
355 }
356 return 0;
357 }
358
359 static char *ctime1(char *buf2)
360 {
361 time_t ti;
362 char *p;
363
364 ti = time(NULL);
365 p = ctime(&ti);
366 strcpy(buf2, p);
367 p = buf2 + strlen(p) - 1;
368 if (*p == '\n')
369 *p = '\0';
370 return buf2;
371 }
372
373 static void http_vlog(const char *fmt, va_list vargs)
374 {
375 static int print_prefix = 1;
376 if (logfile) {
377 if (print_prefix) {
378 char buf[32];
379 ctime1(buf);
380 fprintf(logfile, "%s ", buf);
381 }
382 print_prefix = strstr(fmt, "\n") != NULL;
383 vfprintf(logfile, fmt, vargs);
384 fflush(logfile);
385 }
386 }
387
388 #ifdef __GNUC__
389 __attribute__ ((format (printf, 1, 2)))
390 #endif
391 static void http_log(const char *fmt, ...)
392 {
393 va_list vargs;
394 va_start(vargs, fmt);
395 http_vlog(fmt, vargs);
396 va_end(vargs);
397 }
398
399 static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs)
400 {
401 static int print_prefix = 1;
402 AVClass *avc = ptr ? *(AVClass**)ptr : NULL;
403 if (level > av_log_get_level())
404 return;
405 if (print_prefix && avc)
406 http_log("[%s @ %p]", avc->item_name(ptr), ptr);
407 print_prefix = strstr(fmt, "\n") != NULL;
408 http_vlog(fmt, vargs);
409 }
410
411 static void log_connection(HTTPContext *c)
412 {
413 if (c->suppress_log)
414 return;
415
416 http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n",
417 inet_ntoa(c->from_addr.sin_addr), c->method, c->url,
418 c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
419 }
420
421 static void update_datarate(DataRateData *drd, int64_t count)
422 {
423 if (!drd->time1 && !drd->count1) {
424 drd->time1 = drd->time2 = cur_time;
425 drd->count1 = drd->count2 = count;
426 } else if (cur_time - drd->time2 > 5000) {
427 drd->time1 = drd->time2;
428 drd->count1 = drd->count2;
429 drd->time2 = cur_time;
430 drd->count2 = count;
431 }
432 }
433
434 /* In bytes per second */
435 static int compute_datarate(DataRateData *drd, int64_t count)
436 {
437 if (cur_time == drd->time1)
438 return 0;
439
440 return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
441 }
442
443
444 static void start_children(FFStream *feed)
445 {
446 if (no_launch)
447 return;
448
449 for (; feed; feed = feed->next) {
450 if (feed->child_argv && !feed->pid) {
451 feed->pid_start = time(0);
452
453 feed->pid = fork();
454
455 if (feed->pid < 0) {
456 http_log("Unable to create children\n");
457 exit(1);
458 }
459 if (!feed->pid) {
460 /* In child */
461 char pathname[1024];
462 char *slash;
463 int i;
464
465 av_strlcpy(pathname, my_program_name, sizeof(pathname));
466
467 slash = strrchr(pathname, '/');
468 if (!slash)
469 slash = pathname;
470 else
471 slash++;
472 strcpy(slash, "ffmpeg");
473
474 http_log("Launch commandline: ");
475 http_log("%s ", pathname);
476 for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++)
477 http_log("%s ", feed->child_argv[i]);
478 http_log("\n");
479
480 for (i = 3; i < 256; i++)
481 close(i);
482
483 if (!ffserver_debug) {
484 i = open("/dev/null", O_RDWR);
485 if (i != -1) {
486 dup2(i, 0);
487 dup2(i, 1);
488 dup2(i, 2);
489 close(i);
490 }
491 }
492
493 /* This is needed to make relative pathnames work */
494 chdir(my_program_dir);
495
496 signal(SIGPIPE, SIG_DFL);
497
498 execvp(pathname, feed->child_argv);
499
500 _exit(1);
501 }
502 }
503 }
504 }
505
506 /* open a listening socket */
507 static int socket_open_listen(struct sockaddr_in *my_addr)
508 {
509 int server_fd, tmp;
510
511 server_fd = socket(AF_INET,SOCK_STREAM,0);
512 if (server_fd < 0) {
513 perror ("socket");
514 return -1;
515 }
516
517 tmp = 1;
518 setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
519
520 if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
521 char bindmsg[32];
522 snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port));
523 perror (bindmsg);
524 closesocket(server_fd);
525 return -1;
526 }
527
528 if (listen (server_fd, 5) < 0) {
529 perror ("listen");
530 closesocket(server_fd);
531 return -1;
532 }
533 ff_socket_nonblock(server_fd, 1);
534
535 return server_fd;
536 }
537
538 /* start all multicast streams */
539 static void start_multicast(void)
540 {
541 FFStream *stream;
542 char session_id[32];
543 HTTPContext *rtp_c;
544 struct sockaddr_in dest_addr;
545 int default_port, stream_index;
546
547 default_port = 6000;
548 for(stream = first_stream; stream != NULL; stream = stream->next) {
549 if (stream->is_multicast) {
550 /* open the RTP connection */
551 snprintf(session_id, sizeof(session_id), "%08x%08x",
552 av_lfg_get(&random_state), av_lfg_get(&random_state));
553
554 /* choose a port if none given */
555 if (stream->multicast_port == 0) {
556 stream->multicast_port = default_port;
557 default_port += 100;
558 }
559
560 dest_addr.sin_family = AF_INET;
561 dest_addr.sin_addr = stream->multicast_ip;
562 dest_addr.sin_port = htons(stream->multicast_port);
563
564 rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
565 RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
566 if (!rtp_c)
567 continue;
568
569 if (open_input_stream(rtp_c, "") < 0) {
570 http_log("Could not open input stream for stream '%s'\n",
571 stream->filename);
572 continue;
573 }
574
575 /* open each RTP stream */
576 for(stream_index = 0; stream_index < stream->nb_streams;
577 stream_index++) {
578 dest_addr.sin_port = htons(stream->multicast_port +
579 2 * stream_index);
580 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) {
581 http_log("Could not open output stream '%s/streamid=%d'\n",
582 stream->filename, stream_index);
583 exit(1);
584 }
585 }
586
587 /* change state to send data */
588 rtp_c->state = HTTPSTATE_SEND_DATA;
589 }
590 }
591 }
592
593 /* main loop of the http server */
594 static int http_server(void)
595 {
596 int server_fd = 0, rtsp_server_fd = 0;
597 int ret, delay, delay1;
598 struct pollfd *poll_table, *poll_entry;
599 HTTPContext *c, *c_next;
600
601 if(!(poll_table = av_mallocz((nb_max_http_connections + 2)*sizeof(*poll_table)))) {
602 http_log("Impossible to allocate a poll table handling %d connections.\n", nb_max_http_connections);
603 return -1;
604 }
605
606 if (my_http_addr.sin_port) {
607 server_fd = socket_open_listen(&my_http_addr);
608 if (server_fd < 0)
609 return -1;
610 }
611
612 if (my_rtsp_addr.sin_port) {
613 rtsp_server_fd = socket_open_listen(&my_rtsp_addr);
614 if (rtsp_server_fd < 0)
615 return -1;
616 }
617
618 if (!rtsp_server_fd && !server_fd) {
619 http_log("HTTP and RTSP disabled.\n");
620 return -1;
621 }
622
623 http_log("FFserver started.\n");
624
625 start_children(first_feed);
626
627 start_multicast();
628
629 for(;;) {
630 poll_entry = poll_table;
631 if (server_fd) {
632 poll_entry->fd = server_fd;
633 poll_entry->events = POLLIN;
634 poll_entry++;
635 }
636 if (rtsp_server_fd) {
637 poll_entry->fd = rtsp_server_fd;
638 poll_entry->events = POLLIN;
639 poll_entry++;
640 }
641
642 /* wait for events on each HTTP handle */
643 c = first_http_ctx;
644 delay = 1000;
645 while (c != NULL) {
646 int fd;
647 fd = c->fd;
648 switch(c->state) {
649 case HTTPSTATE_SEND_HEADER:
650 case RTSPSTATE_SEND_REPLY:
651 case RTSPSTATE_SEND_PACKET:
652 c->poll_entry = poll_entry;
653 poll_entry->fd = fd;
654 poll_entry->events = POLLOUT;
655 poll_entry++;
656 break;
657 case HTTPSTATE_SEND_DATA_HEADER:
658 case HTTPSTATE_SEND_DATA:
659 case HTTPSTATE_SEND_DATA_TRAILER:
660 if (!c->is_packetized) {
661 /* for TCP, we output as much as we can (may need to put a limit) */
662 c->poll_entry = poll_entry;
663 poll_entry->fd = fd;
664 poll_entry->events = POLLOUT;
665 poll_entry++;
666 } else {
667 /* when ffserver is doing the timing, we work by
668 looking at which packet need to be sent every
669 10 ms */
670 delay1 = 10; /* one tick wait XXX: 10 ms assumed */
671 if (delay1 < delay)
672 delay = delay1;
673 }
674 break;
675 case HTTPSTATE_WAIT_REQUEST:
676 case HTTPSTATE_RECEIVE_DATA:
677 case HTTPSTATE_WAIT_FEED:
678 case RTSPSTATE_WAIT_REQUEST:
679 /* need to catch errors */
680 c->poll_entry = poll_entry;
681 poll_entry->fd = fd;
682 poll_entry->events = POLLIN;/* Maybe this will work */
683 poll_entry++;
684 break;
685 default:
686 c->poll_entry = NULL;
687 break;
688 }
689 c = c->next;
690 }
691
692 /* wait for an event on one connection. We poll at least every
693 second to handle timeouts */
694 do {
695 ret = poll(poll_table, poll_entry - poll_table, delay);
696 if (ret < 0 && ff_neterrno() != AVERROR(EAGAIN) &&
697 ff_neterrno() != AVERROR(EINTR))
698 return -1;
699 } while (ret < 0);
700
701 cur_time = av_gettime() / 1000;
702
703 if (need_to_start_children) {
704 need_to_start_children = 0;
705 start_children(first_feed);
706 }
707
708 /* now handle the events */
709 for(c = first_http_ctx; c != NULL; c = c_next) {
710 c_next = c->next;
711 if (handle_connection(c) < 0) {
712 /* close and free the connection */
713 log_connection(c);
714 close_connection(c);
715 }
716 }
717
718 poll_entry = poll_table;
719 if (server_fd) {
720 /* new HTTP connection request ? */
721 if (poll_entry->revents & POLLIN)
722 new_connection(server_fd, 0);
723 poll_entry++;
724 }
725 if (rtsp_server_fd) {
726 /* new RTSP connection request ? */
727 if (poll_entry->revents & POLLIN)
728 new_connection(rtsp_server_fd, 1);
729 }
730 }
731 }
732
733 /* start waiting for a new HTTP/RTSP request */
734 static void start_wait_request(HTTPContext *c, int is_rtsp)
735 {
736 c->buffer_ptr = c->buffer;
737 c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
738
739 if (is_rtsp) {
740 c->timeout = cur_time + RTSP_REQUEST_TIMEOUT;
741 c->state = RTSPSTATE_WAIT_REQUEST;
742 } else {
743 c->timeout = cur_time + HTTP_REQUEST_TIMEOUT;
744 c->state = HTTPSTATE_WAIT_REQUEST;
745 }
746 }
747
748 static void http_send_too_busy_reply(int fd)
749 {
750 char buffer[300];
751 int len = snprintf(buffer, sizeof(buffer),
752 "HTTP/1.0 503 Server too busy\r\n"
753 "Content-type: text/html\r\n"
754 "\r\n"
755 "<html><head><title>Too busy</title></head><body>\r\n"
756 "<p>The server is too busy to serve your request at this time.</p>\r\n"
757 "<p>The number of current connections is %d, and this exceeds the limit of %d.</p>\r\n"
758 "</body></html>\r\n",
759 nb_connections, nb_max_connections);
760 send(fd, buffer, len, 0);
761 }
762
763
764 static void new_connection(int server_fd, int is_rtsp)
765 {
766 struct sockaddr_in from_addr;
767 int fd, len;
768 HTTPContext *c = NULL;
769
770 len = sizeof(from_addr);
771 fd = accept(server_fd, (struct sockaddr *)&from_addr,
772 &len);
773 if (fd < 0) {
774 http_log("error during accept %s\n", strerror(errno));
775 return;
776 }
777 ff_socket_nonblock(fd, 1);
778
779 if (nb_connections >= nb_max_connections) {
780 http_send_too_busy_reply(fd);
781 goto fail;
782 }
783
784 /* add a new connection */
785 c = av_mallocz(sizeof(HTTPContext));
786 if (!c)
787 goto fail;
788
789 c->fd = fd;
790 c->poll_entry = NULL;
791 c->from_addr = from_addr;
792 c->buffer_size = IOBUFFER_INIT_SIZE;
793 c->buffer = av_malloc(c->buffer_size);
794 if (!c->buffer)
795 goto fail;
796
797 c->next = first_http_ctx;
798 first_http_ctx = c;
799 nb_connections++;
800
801 start_wait_request(c, is_rtsp);
802
803 return;
804
805 fail:
806 if (c) {
807 av_free(c->buffer);
808 av_free(c);
809 }
810 closesocket(fd);
811 }
812
813 static void close_connection(HTTPContext *c)
814 {
815 HTTPContext **cp, *c1;
816 int i, nb_streams;
817 AVFormatContext *ctx;
818 URLContext *h;
819 AVStream *st;
820
821 /* remove connection from list */
822 cp = &first_http_ctx;
823 while ((*cp) != NULL) {
824 c1 = *cp;
825 if (c1 == c)
826 *cp = c->next;
827 else
828 cp = &c1->next;
829 }
830
831 /* remove references, if any (XXX: do it faster) */
832 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
833 if (c1->rtsp_c == c)
834 c1->rtsp_c = NULL;
835 }
836
837 /* remove connection associated resources */
838 if (c->fd >= 0)
839 closesocket(c->fd);
840 if (c->fmt_in) {
841 /* close each frame parser */
842 for(i=0;i<c->fmt_in->nb_streams;i++) {
843 st = c->fmt_in->streams[i];
844 if (st->codec->codec)
845 avcodec_close(st->codec);
846 }
847 av_close_input_file(c->fmt_in);
848 }
849
850 /* free RTP output streams if any */
851 nb_streams = 0;
852 if (c->stream)
853 nb_streams = c->stream->nb_streams;
854
855 for(i=0;i<nb_streams;i++) {
856 ctx = c->rtp_ctx[i];
857 if (ctx) {
858 av_write_trailer(ctx);
859 av_metadata_free(&ctx->metadata);
860 av_free(ctx->streams[0]);
861 av_free(ctx);
862 }
863 h = c->rtp_handles[i];
864 if (h)
865 url_close(h);
866 }
867
868 ctx = &c->fmt_ctx;
869
870 if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) {
871 if (ctx->oformat) {
872 /* prepare header */
873 if (avio_open_dyn_buf(&ctx->pb) >= 0) {
874 av_write_trailer(ctx);
875 av_freep(&c->pb_buffer);
876 avio_close_dyn_buf(ctx->pb, &c->pb_buffer);
877 }
878 }
879 }
880
881 for(i=0; i<ctx->nb_streams; i++)
882 av_free(ctx->streams[i]);
883
884 if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
885 current_bandwidth -= c->stream->bandwidth;
886
887 /* signal that there is no feed if we are the feeder socket */
888 if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
889 c->stream->feed_opened = 0;
890 close(c->feed_fd);
891 }
892
893 av_freep(&c->pb_buffer);
894 av_freep(&c->packet_buffer);
895 av_free(c->buffer);
896 av_free(c);
897 nb_connections--;
898 }
899
900 static int handle_connection(HTTPContext *c)
901 {
902 int len, ret;
903
904 switch(c->state) {
905 case HTTPSTATE_WAIT_REQUEST:
906 case RTSPSTATE_WAIT_REQUEST:
907 /* timeout ? */
908 if ((c->timeout - cur_time) < 0)
909 return -1;
910 if (c->poll_entry->revents & (POLLERR | POLLHUP))
911 return -1;
912
913 /* no need to read if no events */
914 if (!(c->poll_entry->revents & POLLIN))
915 return 0;
916 /* read the data */
917 read_loop:
918 len = recv(c->fd, c->buffer_ptr, 1, 0);
919 if (len < 0) {
920 if (ff_neterrno() != AVERROR(EAGAIN) &&
921 ff_neterrno() != AVERROR(EINTR))
922 return -1;
923 } else if (len == 0) {
924 return -1;
925 } else {
926 /* search for end of request. */
927 uint8_t *ptr;
928 c->buffer_ptr += len;
929 ptr = c->buffer_ptr;
930 if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
931 (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
932 /* request found : parse it and reply */
933 if (c->state == HTTPSTATE_WAIT_REQUEST) {
934 ret = http_parse_request(c);
935 } else {
936 ret = rtsp_parse_request(c);
937 }
938 if (ret < 0)
939 return -1;
940 } else if (ptr >= c->buffer_end) {
941 /* request too long: cannot do anything */
942 return -1;
943 } else goto read_loop;
944 }
945 break;
946
947 case HTTPSTATE_SEND_HEADER:
948 if (c->poll_entry->revents & (POLLERR | POLLHUP))
949 return -1;
950
951 /* no need to write if no events */
952 if (!(c->poll_entry->revents & POLLOUT))
953 return 0;
954 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
955 if (len < 0) {
956 if (ff_neterrno() != AVERROR(EAGAIN) &&
957 ff_neterrno() != AVERROR(EINTR)) {
958 /* error : close connection */
959 av_freep(&c->pb_buffer);
960 return -1;
961 }
962 } else {
963 c->buffer_ptr += len;
964 if (c->stream)
965 c->stream->bytes_served += len;
966 c->data_count += len;
967 if (c->buffer_ptr >= c->buffer_end) {
968 av_freep(&c->pb_buffer);
969 /* if error, exit */
970 if (c->http_error)
971 return -1;
972 /* all the buffer was sent : synchronize to the incoming stream */
973 c->state = HTTPSTATE_SEND_DATA_HEADER;
974 c->buffer_ptr = c->buffer_end = c->buffer;
975 }
976 }
977 break;
978
979 case HTTPSTATE_SEND_DATA:
980 case HTTPSTATE_SEND_DATA_HEADER:
981 case HTTPSTATE_SEND_DATA_TRAILER:
982 /* for packetized output, we consider we can always write (the
983 input streams sets the speed). It may be better to verify
984 that we do not rely too much on the kernel queues */
985 if (!c->is_packetized) {
986 if (c->poll_entry->revents & (POLLERR | POLLHUP))
987 return -1;
988
989 /* no need to read if no events */
990 if (!(c->poll_entry->revents & POLLOUT))
991 return 0;
992 }
993 if (http_send_data(c) < 0)
994 return -1;
995 /* close connection if trailer sent */
996 if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
997 return -1;
998 break;
999 case HTTPSTATE_RECEIVE_DATA:
1000 /* no need to read if no events */
1001 if (c->poll_entry->revents & (POLLERR | POLLHUP))
1002 return -1;
1003 if (!(c->poll_entry->revents & POLLIN))
1004 return 0;
1005 if (http_receive_data(c) < 0)
1006 return -1;
1007 break;
1008 case HTTPSTATE_WAIT_FEED:
1009 /* no need to read if no events */
1010 if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
1011 return -1;
1012
1013 /* nothing to do, we'll be waken up by incoming feed packets */
1014 break;
1015
1016 case RTSPSTATE_SEND_REPLY:
1017 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1018 av_freep(&c->pb_buffer);
1019 return -1;
1020 }
1021 /* no need to write if no events */
1022 if (!(c->poll_entry->revents & POLLOUT))
1023 return 0;
1024 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
1025 if (len < 0) {
1026 if (ff_neterrno() != AVERROR(EAGAIN) &&
1027 ff_neterrno() != AVERROR(EINTR)) {
1028 /* error : close connection */
1029 av_freep(&c->pb_buffer);
1030 return -1;
1031 }
1032 } else {
1033 c->buffer_ptr += len;
1034 c->data_count += len;
1035 if (c->buffer_ptr >= c->buffer_end) {
1036 /* all the buffer was sent : wait for a new request */
1037 av_freep(&c->pb_buffer);
1038 start_wait_request(c, 1);
1039 }
1040 }
1041 break;
1042 case RTSPSTATE_SEND_PACKET:
1043 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1044 av_freep(&c->packet_buffer);
1045 return -1;
1046 }
1047 /* no need to write if no events */
1048 if (!(c->poll_entry->revents & POLLOUT))
1049 return 0;
1050 len = send(c->fd, c->packet_buffer_ptr,
1051 c->packet_buffer_end - c->packet_buffer_ptr, 0);
1052 if (len < 0) {
1053 if (ff_neterrno() != AVERROR(EAGAIN) &&
1054 ff_neterrno() != AVERROR(EINTR)) {
1055 /* error : close connection */
1056 av_freep(&c->packet_buffer);
1057 return -1;
1058 }
1059 } else {
1060 c->packet_buffer_ptr += len;
1061 if (c->packet_buffer_ptr >= c->packet_buffer_end) {
1062 /* all the buffer was sent : wait for a new request */
1063 av_freep(&c->packet_buffer);
1064 c->state = RTSPSTATE_WAIT_REQUEST;
1065 }
1066 }
1067 break;
1068 case HTTPSTATE_READY:
1069 /* nothing to do */
1070 break;
1071 default:
1072 return -1;
1073 }
1074 return 0;
1075 }
1076
1077 static int extract_rates(char *rates, int ratelen, const char *request)
1078 {
1079 const char *p;
1080
1081 for (p = request; *p && *p != '\r' && *p != '\n'; ) {
1082 if (strncasecmp(p, "Pragma:", 7) == 0) {
1083 const char *q = p + 7;
1084
1085 while (*q && *q != '\n' && isspace(*q))
1086 q++;
1087
1088 if (strncasecmp(q, "stream-switch-entry=", 20) == 0) {
1089 int stream_no;
1090 int rate_no;
1091
1092 q += 20;
1093
1094 memset(rates, 0xff, ratelen);
1095
1096 while (1) {
1097 while (*q && *q != '\n' && *q != ':')
1098 q++;
1099
1100 if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
1101 break;
1102
1103 stream_no--;
1104 if (stream_no < ratelen && stream_no >= 0)
1105 rates[stream_no] = rate_no;
1106
1107 while (*q && *q != '\n' && !isspace(*q))
1108 q++;
1109 }
1110
1111 return 1;
1112 }
1113 }
1114 p = strchr(p, '\n');
1115 if (!p)
1116 break;
1117
1118 p++;
1119 }
1120
1121 return 0;
1122 }
1123
1124 static int find_stream_in_feed(FFStream *feed, AVCodecContext *codec, int bit_rate)
1125 {
1126 int i;
1127 int best_bitrate = 100000000;
1128 int best = -1;
1129
1130 for (i = 0; i < feed->nb_streams; i++) {
1131 AVCodecContext *feed_codec = feed->streams[i]->codec;
1132
1133 if (feed_codec->codec_id != codec->codec_id ||
1134 feed_codec->sample_rate != codec->sample_rate ||
1135 feed_codec->width != codec->width ||
1136 feed_codec->height != codec->height)
1137 continue;
1138
1139 /* Potential stream */
1140
1141 /* We want the fastest stream less than bit_rate, or the slowest
1142 * faster than bit_rate
1143 */
1144
1145 if (feed_codec->bit_rate <= bit_rate) {
1146 if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) {
1147 best_bitrate = feed_codec->bit_rate;
1148 best = i;
1149 }
1150 } else {
1151 if (feed_codec->bit_rate < best_bitrate) {
1152 best_bitrate = feed_codec->bit_rate;
1153 best = i;
1154 }
1155 }
1156 }
1157
1158 return best;
1159 }
1160
1161 static int modify_current_stream(HTTPContext *c, char *rates)
1162 {
1163 int i;
1164 FFStream *req = c->stream;
1165 int action_required = 0;
1166
1167 /* Not much we can do for a feed */
1168 if (!req->feed)
1169 return 0;
1170
1171 for (i = 0; i < req->nb_streams; i++) {
1172 AVCodecContext *codec = req->streams[i]->codec;
1173
1174 switch(rates[i]) {
1175 case 0:
1176 c->switch_feed_streams[i] = req->feed_streams[i];
1177 break;
1178 case 1:
1179 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
1180 break;
1181 case 2:
1182 /* Wants off or slow */
1183 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
1184 #ifdef WANTS_OFF
1185 /* This doesn't work well when it turns off the only stream! */
1186 c->switch_feed_streams[i] = -2;
1187 c->feed_streams[i] = -2;
1188 #endif
1189 break;
1190 }
1191
1192 if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i])
1193 action_required = 1;
1194 }
1195
1196 return action_required;
1197 }
1198
1199 /* XXX: factorize in utils.c ? */
1200 /* XXX: take care with different space meaning */
1201 static void skip_spaces(const char **pp)
1202 {
1203 const char *p;
1204 p = *pp;
1205 while (*p == ' ' || *p == '\t')
1206 p++;
1207 *pp = p;
1208 }
1209
1210 static void get_word(char *buf, int buf_size, const char **pp)
1211 {
1212 const char *p;
1213 char *q;
1214
1215 p = *pp;
1216 skip_spaces(&p);
1217 q = buf;
1218 while (!isspace(*p) && *p != '\0') {
1219 if ((q - buf) < buf_size - 1)
1220 *q++ = *p;
1221 p++;
1222 }
1223 if (buf_size > 0)
1224 *q = '\0';
1225 *pp = p;
1226 }
1227
1228 static void get_arg(char *buf, int buf_size, const char **pp)
1229 {
1230 const char *p;
1231 char *q;
1232 int quote;
1233
1234 p = *pp;
1235 while (isspace(*p)) p++;
1236 q = buf;
1237 quote = 0;
1238 if (*p == '\"' || *p == '\'')
1239 quote = *p++;
1240 for(;;) {
1241 if (quote) {
1242 if (*p == quote)
1243 break;
1244 } else {
1245 if (isspace(*p))
1246 break;
1247 }
1248 if (*p == '\0')
1249 break;
1250 if ((q - buf) < buf_size - 1)
1251 *q++ = *p;
1252 p++;
1253 }
1254 *q = '\0';
1255 if (quote && *p == quote)
1256 p++;
1257 *pp = p;
1258 }
1259
1260 static void parse_acl_row(FFStream *stream, FFStream* feed, IPAddressACL *ext_acl,
1261 const char *p, const char *filename, int line_num)
1262 {
1263 char arg[1024];
1264 IPAddressACL acl;
1265 int errors = 0;
1266
1267 get_arg(arg, sizeof(arg), &p);
1268 if (strcasecmp(arg, "allow") == 0)
1269 acl.action = IP_ALLOW;
1270 else if (strcasecmp(arg, "deny") == 0)
1271 acl.action = IP_DENY;
1272 else {
1273 fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
1274 filename, line_num, arg);
1275 errors++;
1276 }
1277
1278 get_arg(arg, sizeof(arg), &p);
1279
1280 if (resolve_host(&acl.first, arg) != 0) {
1281 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1282 filename, line_num, arg);
1283 errors++;
1284 } else
1285 acl.last = acl.first;
1286
1287 get_arg(arg, sizeof(arg), &p);
1288
1289 if (arg[0]) {
1290 if (resolve_host(&acl.last, arg) != 0) {
1291 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1292 filename, line_num, arg);
1293 errors++;
1294 }
1295 }
1296
1297 if (!errors) {
1298 IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
1299 IPAddressACL **naclp = 0;
1300
1301 acl.next = 0;
1302 *nacl = acl;
1303
1304 if (stream)
1305 naclp = &stream->acl;
1306 else if (feed)
1307 naclp = &feed->acl;
1308 else if (ext_acl)
1309 naclp = &ext_acl;
1310 else {
1311 fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
1312 filename, line_num);
1313 errors++;
1314 }
1315
1316 if (naclp) {
1317 while (*naclp)
1318 naclp = &(*naclp)->next;
1319
1320 *naclp = nacl;
1321 }
1322 }
1323 }
1324
1325
1326 static IPAddressACL* parse_dynamic_acl(FFStream *stream, HTTPContext *c)
1327 {
1328 FILE* f;
1329 char line[1024];
1330 char cmd[1024];
1331 IPAddressACL *acl = NULL;
1332 int line_num = 0;
1333 const char *p;
1334
1335 f = fopen(stream->dynamic_acl, "r");
1336 if (!f) {
1337 perror(stream->dynamic_acl);
1338 return NULL;
1339 }
1340
1341 acl = av_mallocz(sizeof(IPAddressACL));
1342
1343 /* Build ACL */
1344 for(;;) {
1345 if (fgets(line, sizeof(line), f) == NULL)
1346 break;
1347 line_num++;
1348 p = line;
1349 while (isspace(*p))
1350 p++;
1351 if (*p == '\0' || *p == '#')
1352 continue;
1353 get_arg(cmd, sizeof(cmd), &p);
1354
1355 if (!strcasecmp(cmd, "ACL"))
1356 parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num);
1357 }
1358 fclose(f);
1359 return acl;
1360 }
1361
1362
1363 static void free_acl_list(IPAddressACL *in_acl)
1364 {
1365 IPAddressACL *pacl,*pacl2;
1366
1367 pacl = in_acl;
1368 while(pacl) {
1369 pacl2 = pacl;
1370 pacl = pacl->next;
1371 av_freep(pacl2);
1372 }
1373 }
1374
1375 static int validate_acl_list(IPAddressACL *in_acl, HTTPContext *c)
1376 {
1377 enum IPAddressAction last_action = IP_DENY;
1378 IPAddressACL *acl;
1379 struct in_addr *src = &c->from_addr.sin_addr;
1380 unsigned long src_addr = src->s_addr;
1381
1382 for (acl = in_acl; acl; acl = acl->next) {
1383 if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
1384 return (acl->action == IP_ALLOW) ? 1 : 0;
1385 last_action = acl->action;
1386 }
1387
1388 /* Nothing matched, so return not the last action */
1389 return (last_action == IP_DENY) ? 1 : 0;
1390 }
1391
1392 static int validate_acl(FFStream *stream, HTTPContext *c)
1393 {
1394 int ret = 0;
1395 IPAddressACL *acl;
1396
1397
1398 /* if stream->acl is null validate_acl_list will return 1 */
1399 ret = validate_acl_list(stream->acl, c);
1400
1401 if (stream->dynamic_acl[0]) {
1402 acl = parse_dynamic_acl(stream, c);
1403
1404 ret = validate_acl_list(acl, c);
1405
1406 free_acl_list(acl);
1407 }
1408
1409 return ret;
1410 }
1411
1412 /* compute the real filename of a file by matching it without its
1413 extensions to all the stream filenames */
1414 static void compute_real_filename(char *filename, int max_size)
1415 {
1416 char file1[1024];
1417 char file2[1024];
1418 char *p;
1419 FFStream *stream;
1420
1421 /* compute filename by matching without the file extensions */
1422 av_strlcpy(file1, filename, sizeof(file1));
1423 p = strrchr(file1, '.');
1424 if (p)
1425 *p = '\0';
1426 for(stream = first_stream; stream != NULL; stream = stream->next) {
1427 av_strlcpy(file2, stream->filename, sizeof(file2));
1428 p = strrchr(file2, '.');
1429 if (p)
1430 *p = '\0';
1431 if (!strcmp(file1, file2)) {
1432 av_strlcpy(filename, stream->filename, max_size);
1433 break;
1434 }
1435 }
1436 }
1437
1438 enum RedirType {
1439 REDIR_NONE,
1440 REDIR_ASX,
1441 REDIR_RAM,
1442 REDIR_ASF,
1443 REDIR_RTSP,
1444 REDIR_SDP,
1445 };
1446
1447 /* parse http request and prepare header */
1448 static int http_parse_request(HTTPContext *c)
1449 {
1450 char *p;
1451 enum RedirType redir_type;
1452 char cmd[32];
1453 char info[1024], filename[1024];
1454 char url[1024], *q;
1455 char protocol[32];
1456 char msg[1024];
1457 const char *mime_type;
1458 FFStream *stream;
1459 int i;
1460 char ratebuf[32];
1461 char *useragent = 0;
1462
1463 p = c->buffer;
1464 get_word(cmd, sizeof(cmd), (const char **)&p);
1465 av_strlcpy(c->method, cmd, sizeof(c->method));
1466
1467 if (!strcmp(cmd, "GET"))
1468 c->post = 0;
1469 else if (!strcmp(cmd, "POST"))
1470 c->post = 1;
1471 else
1472 return -1;
1473
1474 get_word(url, sizeof(url), (const char **)&p);
1475 av_strlcpy(c->url, url, sizeof(c->url));
1476
1477 get_word(protocol, sizeof(protocol), (const char **)&p);
1478 if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
1479 return -1;
1480
1481 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
1482
1483 if (ffserver_debug)
1484 http_log("%s - - New connection: %s %s\n", inet_ntoa(c->from_addr.sin_addr), cmd, url);
1485
1486 /* find the filename and the optional info string in the request */
1487 p = strchr(url, '?');
1488 if (p) {
1489 av_strlcpy(info, p, sizeof(info));
1490 *p = '\0';
1491 } else
1492 info[0] = '\0';
1493
1494 av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
1495
1496 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1497 if (strncasecmp(p, "User-Agent:", 11) == 0) {
1498 useragent = p + 11;
1499 if (*useragent && *useragent != '\n' && isspace(*useragent))
1500 useragent++;
1501 break;
1502 }
1503 p = strchr(p, '\n');
1504 if (!p)
1505 break;
1506
1507 p++;
1508 }
1509
1510 redir_type = REDIR_NONE;
1511 if (av_match_ext(filename, "asx")) {
1512 redir_type = REDIR_ASX;
1513 filename[strlen(filename)-1] = 'f';
1514 } else if (av_match_ext(filename, "asf") &&
1515 (!useragent || strncasecmp(useragent, "NSPlayer", 8) != 0)) {
1516 /* if this isn't WMP or lookalike, return the redirector file */
1517 redir_type = REDIR_ASF;
1518 } else if (av_match_ext(filename, "rpm,ram")) {
1519 redir_type = REDIR_RAM;
1520 strcpy(filename + strlen(filename)-2, "m");
1521 } else if (av_match_ext(filename, "rtsp")) {
1522 redir_type = REDIR_RTSP;
1523 compute_real_filename(filename, sizeof(filename) - 1);
1524 } else if (av_match_ext(filename, "sdp")) {
1525 redir_type = REDIR_SDP;
1526 compute_real_filename(filename, sizeof(filename) - 1);
1527 }
1528
1529 // "redirect" / request to index.html
1530 if (!strlen(filename))
1531 av_strlcpy(filename, "index.html", sizeof(filename) - 1);
1532
1533 stream = first_stream;
1534 while (stream != NULL) {
1535 if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
1536 break;
1537 stream = stream->next;
1538 }
1539 if (stream == NULL) {
1540 snprintf(msg, sizeof(msg), "File '%s' not found", url);
1541 http_log("File '%s' not found\n", url);
1542 goto send_error;
1543 }
1544
1545 c->stream = stream;
1546 memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
1547 memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
1548
1549 if (stream->stream_type == STREAM_TYPE_REDIRECT) {
1550 c->http_error = 301;
1551 q = c->buffer;
1552 q += snprintf(q, c->buffer_size,
1553 "HTTP/1.0 301 Moved\r\n"
1554 "Location: %s\r\n"
1555 "Content-type: text/html\r\n"
1556 "\r\n"
1557 "<html><head><title>Moved</title></head><body>\r\n"
1558 "You should be <a href=\"%s\">redirected</a>.\r\n"
1559 "</body></html>\r\n", stream->feed_filename, stream->feed_filename);
1560 /* prepare output buffer */
1561 c->buffer_ptr = c->buffer;
1562 c->buffer_end = q;
1563 c->state = HTTPSTATE_SEND_HEADER;
1564 return 0;
1565 }
1566
1567 /* If this is WMP, get the rate information */
1568 if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1569 if (modify_current_stream(c, ratebuf)) {
1570 for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) {
1571 if (c->switch_feed_streams[i] >= 0)
1572 c->switch_feed_streams[i] = -1;
1573 }
1574 }
1575 }
1576
1577 if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
1578 current_bandwidth += stream->bandwidth;
1579
1580 /* If already streaming this feed, do not let start another feeder. */
1581 if (stream->feed_opened) {
1582 snprintf(msg, sizeof(msg), "This feed is already being received.");
1583 http_log("Feed '%s' already being received\n", stream->feed_filename);
1584 goto send_error;
1585 }
1586
1587 if (c->post == 0 && max_bandwidth < current_bandwidth) {
1588 c->http_error = 503;
1589 q = c->buffer;
1590 q += snprintf(q, c->buffer_size,
1591 "HTTP/1.0 503 Server too busy\r\n"
1592 "Content-type: text/html\r\n"
1593 "\r\n"
1594 "<html><head><title>Too busy</title></head><body>\r\n"
1595 "<p>The server is too busy to serve your request at this time.</p>\r\n"
1596 "<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, "
1597 "and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n"
1598 "</body></html>\r\n", current_bandwidth, max_bandwidth);
1599 /* prepare output buffer */
1600 c->buffer_ptr = c->buffer;
1601 c->buffer_end = q;
1602 c->state = HTTPSTATE_SEND_HEADER;
1603 return 0;
1604 }
1605
1606 if (redir_type != REDIR_NONE) {
1607 char *hostinfo = 0;
1608
1609 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1610 if (strncasecmp(p, "Host:", 5) == 0) {
1611 hostinfo = p + 5;
1612 break;
1613 }
1614 p = strchr(p, '\n');
1615 if (!p)
1616 break;
1617
1618 p++;
1619 }
1620
1621 if (hostinfo) {
1622 char *eoh;
1623 char hostbuf[260];
1624
1625 while (isspace(*hostinfo))
1626 hostinfo++;
1627
1628 eoh = strchr(hostinfo, '\n');
1629 if (eoh) {
1630 if (eoh[-1] == '\r')
1631 eoh--;
1632
1633 if (eoh - hostinfo < sizeof(hostbuf) - 1) {
1634 memcpy(hostbuf, hostinfo, eoh - hostinfo);
1635 hostbuf[eoh - hostinfo] = 0;
1636
1637 c->http_error = 200;
1638 q = c->buffer;
1639 switch(redir_type) {
1640 case REDIR_ASX:
1641 q += snprintf(q, c->buffer_size,
1642 "HTTP/1.0 200 ASX Follows\r\n"
1643 "Content-type: video/x-ms-asf\r\n"
1644 "\r\n"
1645 "<ASX Version=\"3\">\r\n"
1646 //"<!-- Autogenerated by ffserver -->\r\n"
1647 "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n"
1648 "</ASX>\r\n", hostbuf, filename, info);
1649 break;
1650 case REDIR_RAM:
1651 q += snprintf(q, c->buffer_size,
1652 "HTTP/1.0 200 RAM Follows\r\n"
1653 "Content-type: audio/x-pn-realaudio\r\n"
1654 "\r\n"
1655 "# Autogenerated by ffserver\r\n"
1656 "http://%s/%s%s\r\n", hostbuf, filename, info);
1657 break;
1658 case REDIR_ASF:
1659 q += snprintf(q, c->buffer_size,
1660 "HTTP/1.0 200 ASF Redirect follows\r\n"
1661 "Content-type: video/x-ms-asf\r\n"
1662 "\r\n"
1663 "[Reference]\r\n"
1664 "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info);
1665 break;
1666 case REDIR_RTSP:
1667 {
1668 char hostname[256], *p;
1669 /* extract only hostname */
1670 av_strlcpy(hostname, hostbuf, sizeof(hostname));
1671 p = strrchr(hostname, ':');
1672 if (p)
1673 *p = '\0';
1674 q += snprintf(q, c->buffer_size,
1675 "HTTP/1.0 200 RTSP Redirect follows\r\n"
1676 /* XXX: incorrect mime type ? */
1677 "Content-type: application/x-rtsp\r\n"
1678 "\r\n"
1679 "rtsp://%s:%d/%s\r\n", hostname, ntohs(my_rtsp_addr.sin_port), filename);
1680 }
1681 break;
1682 case REDIR_SDP:
1683 {
1684 uint8_t *sdp_data;
1685 int sdp_data_size, len;
1686 struct sockaddr_in my_addr;
1687
1688 q += snprintf(q, c->buffer_size,
1689 "HTTP/1.0 200 OK\r\n"
1690 "Content-type: application/sdp\r\n"
1691 "\r\n");
1692
1693 len = sizeof(my_addr);
1694 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
1695
1696 /* XXX: should use a dynamic buffer */
1697 sdp_data_size = prepare_sdp_description(stream,
1698 &sdp_data,
1699 my_addr.sin_addr);
1700 if (sdp_data_size > 0) {
1701 memcpy(q, sdp_data, sdp_data_size);
1702 q += sdp_data_size;
1703 *q = '\0';
1704 av_free(sdp_data);
1705 }
1706 }
1707 break;
1708 default:
1709 abort();
1710 break;
1711 }
1712
1713 /* prepare output buffer */
1714 c->buffer_ptr = c->buffer;
1715 c->buffer_end = q;
1716 c->state = HTTPSTATE_SEND_HEADER;
1717 return 0;
1718 }
1719 }
1720 }
1721
1722 snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
1723 goto send_error;
1724 }
1725
1726 stream->conns_served++;
1727
1728 /* XXX: add there authenticate and IP match */
1729
1730 if (c->post) {
1731 /* if post, it means a feed is being sent */
1732 if (!stream->is_feed) {
1733 /* However it might be a status report from WMP! Let us log the
1734 * data as it might come in handy one day. */
1735 char *logline = 0;
1736 int client_id = 0;
1737
1738 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1739 if (strncasecmp(p, "Pragma: log-line=", 17) == 0) {
1740 logline = p;
1741 break;
1742 }
1743 if (strncasecmp(p, "Pragma: client-id=", 18) == 0)
1744 client_id = strtol(p + 18, 0, 10);
1745 p = strchr(p, '\n');
1746 if (!p)
1747 break;
1748
1749 p++;
1750 }
1751
1752 if (logline) {
1753 char *eol = strchr(logline, '\n');
1754
1755 logline += 17;
1756
1757 if (eol) {
1758 if (eol[-1] == '\r')
1759 eol--;
1760 http_log("%.*s\n", (int) (eol - logline), logline);
1761 c->suppress_log = 1;
1762 }
1763 }
1764
1765 #ifdef DEBUG_WMP
1766 http_log("\nGot request:\n%s\n", c->buffer);
1767 #endif
1768
1769 if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1770 HTTPContext *wmpc;
1771
1772 /* Now we have to find the client_id */
1773 for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
1774 if (wmpc->wmp_client_id == client_id)
1775 break;
1776 }
1777
1778 if (wmpc && modify_current_stream(wmpc, ratebuf))
1779 wmpc->switch_pending = 1;
1780 }
1781
1782 snprintf(msg, sizeof(msg), "POST command not handled");
1783 c->stream = 0;
1784 goto send_error;
1785 }
1786 if (http_start_receive_data(c) < 0) {
1787 snprintf(msg, sizeof(msg), "could not open feed");
1788 goto send_error;
1789 }
1790 c->http_error = 0;
1791 c->state = HTTPSTATE_RECEIVE_DATA;
1792 return 0;
1793 }
1794
1795 #ifdef DEBUG_WMP
1796 if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
1797 http_log("\nGot request:\n%s\n", c->buffer);
1798 #endif
1799
1800 if (c->stream->stream_type == STREAM_TYPE_STATUS)
1801 goto send_status;
1802
1803 /* open input stream */
1804 if (open_input_stream(c, info) < 0) {
1805 snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
1806 goto send_error;
1807 }
1808
1809 /* prepare http header */
1810 q = c->buffer;
1811 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 OK\r\n");
1812 mime_type = c->stream->fmt->mime_type;
1813 if (!mime_type)
1814 mime_type = "application/x-octet-stream";
1815 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Pragma: no-cache\r\n");
1816
1817 /* for asf, we need extra headers */
1818 if (!strcmp(c->stream->fmt->name,"asf_stream")) {
1819 /* Need to allocate a client id */
1820
1821 c->wmp_client_id = av_lfg_get(&random_state);
1822
1823 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);
1824 }
1825 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-Type: %s\r\n", mime_type);
1826 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1827
1828 /* prepare output buffer */
1829 c->http_error = 0;
1830 c->buffer_ptr = c->buffer;
1831 c->buffer_end = q;
1832 c->state = HTTPSTATE_SEND_HEADER;
1833 return 0;
1834 send_error:
1835 c->http_error = 404;
1836 q = c->buffer;
1837 q += snprintf(q, c->buffer_size,
1838 "HTTP/1.0 404 Not Found\r\n"
1839 "Content-type: text/html\r\n"
1840 "\r\n"
1841 "<html>\n"
1842 "<head><title>404 Not Found</title></head>\n"
1843 "<body>%s</body>\n"
1844 "</html>\n", msg);
1845 /* prepare output buffer */
1846 c->buffer_ptr = c->buffer;
1847 c->buffer_end = q;
1848 c->state = HTTPSTATE_SEND_HEADER;
1849 return 0;
1850 send_status:
1851 compute_status(c);
1852 c->http_error = 200; /* horrible : we use this value to avoid
1853 going to the send data state */
1854 c->state = HTTPSTATE_SEND_HEADER;
1855 return 0;
1856 }
1857
1858 static void fmt_bytecount(AVIOContext *pb, int64_t count)
1859 {
1860 static const char *suffix = " kMGTP";
1861 const char *s;
1862
1863 for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
1864
1865 avio_printf(pb, "%"PRId64"%c", count, *s);
1866 }
1867
1868 static void compute_status(HTTPContext *c)
1869 {
1870 HTTPContext *c1;
1871 FFStream *stream;
1872 char *p;
1873 time_t ti;
1874 int i, len;
1875 AVIOContext *pb;
1876
1877 if (avio_open_dyn_buf(&pb) < 0) {
1878 /* XXX: return an error ? */
1879 c->buffer_ptr = c->buffer;
1880 c->buffer_end = c->buffer;
1881 return;
1882 }
1883
1884 avio_printf(pb, "HTTP/1.0 200 OK\r\n");
1885 avio_printf(pb, "Content-type: %s\r\n", "text/html");
1886 avio_printf(pb, "Pragma: no-cache\r\n");
1887 avio_printf(pb, "\r\n");
1888
1889 avio_printf(pb, "<html><head><title>%s Status</title>\n", program_name);
1890 if (c->stream->feed_filename[0])
1891 avio_printf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename);
1892 avio_printf(pb, "</head>\n<body>");
1893 avio_printf(pb, "<h1>%s Status</h1>\n", program_name);
1894 /* format status */
1895 avio_printf(pb, "<h2>Available Streams</h2>\n");
1896 avio_printf(pb, "<table cellspacing=0 cellpadding=4>\n");
1897 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");
1898 stream = first_stream;
1899 while (stream != NULL) {
1900 char sfilename[1024];
1901 char *eosf;
1902
1903 if (stream->feed != stream) {
1904 av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
1905 eosf = sfilename + strlen(sfilename);
1906 if (eosf - sfilename >= 4) {
1907 if (strcmp(eosf - 4, ".asf") == 0)
1908 strcpy(eosf - 4, ".asx");
1909 else if (strcmp(eosf - 3, ".rm") == 0)
1910 strcpy(eosf - 3, ".ram");
1911 else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
1912 /* generate a sample RTSP director if
1913 unicast. Generate an SDP redirector if
1914 multicast */
1915 eosf = strrchr(sfilename, '.');
1916 if (!eosf)
1917 eosf = sfilename + strlen(sfilename);
1918 if (stream->is_multicast)
1919 strcpy(eosf, ".sdp");
1920 else
1921 strcpy(eosf, ".rtsp");
1922 }
1923 }
1924
1925 avio_printf(pb, "<tr><td><a href=\"/%s\">%s</a> ",
1926 sfilename, stream->filename);
1927 avio_printf(pb, "<td align=right> %d <td align=right> ",
1928 stream->conns_served);
1929 fmt_bytecount(pb, stream->bytes_served);
1930 switch(stream->stream_type) {
1931 case STREAM_TYPE_LIVE: {
1932 int audio_bit_rate = 0;
1933 int video_bit_rate = 0;
1934 const char *audio_codec_name = "";
1935 const char *video_codec_name = "";
1936 const char *audio_codec_name_extra = "";
1937 const char *video_codec_name_extra = "";
1938
1939 for(i=0;i<stream->nb_streams;i++) {
1940 AVStream *st = stream->streams[i];
1941 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
1942 switch(st->codec->codec_type) {
1943 case AVMEDIA_TYPE_AUDIO:
1944 audio_bit_rate += st->codec->bit_rate;
1945 if (codec) {
1946 if (*audio_codec_name)
1947 audio_codec_name_extra = "...";
1948 audio_codec_name = codec->name;
1949 }
1950 break;
1951 case AVMEDIA_TYPE_VIDEO:
1952 video_bit_rate += st->codec->bit_rate;
1953 if (codec) {
1954 if (*video_codec_name)
1955 video_codec_name_extra = "...";
1956 video_codec_name = codec->name;
1957 }
1958 break;
1959 case AVMEDIA_TYPE_DATA:
1960 video_bit_rate += st->codec->bit_rate;
1961 break;
1962 default:
1963 abort();
1964 }
1965 }
1966 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",
1967 stream->fmt->name,
1968 stream->bandwidth,
1969 video_bit_rate / 1000, video_codec_name, video_codec_name_extra,
1970 audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra);
1971 if (stream->feed)
1972 avio_printf(pb, "<td>%s", stream->feed->filename);
1973 else
1974 avio_printf(pb, "<td>%s", stream->feed_filename);
1975 avio_printf(pb, "\n");
1976 }
1977 break;
1978 default:
1979 avio_printf(pb, "<td align=center> - <td align=right> - <td align=right> - <td><td align=right> - <td>\n");
1980 break;
1981 }
1982 }
1983 stream = stream->next;
1984 }
1985 avio_printf(pb, "</table>\n");
1986
1987 stream = first_stream;
1988 while (stream != NULL) {
1989 if (stream->feed == stream) {
1990 avio_printf(pb, "<h2>Feed %s</h2>", stream->filename);
1991 if (stream->pid) {
1992 avio_printf(pb, "Running as pid %d.\n", stream->pid);
1993
1994 #if defined(linux) && !defined(CONFIG_NOCUTILS)
1995 {
1996 FILE *pid_stat;
1997 char ps_cmd[64];
1998
1999 /* This is somewhat linux specific I guess */
2000 snprintf(ps_cmd, sizeof(ps_cmd),
2001 "ps -o \"%%cpu,cputime\" --no-headers %d",
2002 stream->pid);
2003
2004 pid_stat = popen(ps_cmd, "r");
2005 if (pid_stat) {
2006 char cpuperc[10];
2007 char cpuused[64];
2008
2009 if (fscanf(pid_stat, "%10s %64s", cpuperc,
2010 cpuused) == 2) {
2011 avio_printf(pb, "Currently using %s%% of the cpu. Total time used %s.\n",
2012 cpuperc, cpuused);
2013 }
2014 fclose(pid_stat);
2015 }
2016 }
2017 #endif
2018
2019 avio_printf(pb, "<p>");
2020 }
2021 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");
2022
2023 for (i = 0; i < stream->nb_streams; i++) {
2024 AVStream *st = stream->streams[i];
2025 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
2026 const char *type = "unknown";
2027 char parameters[64];
2028
2029 parameters[0] = 0;
2030
2031 switch(st->codec->codec_type) {
2032 case AVMEDIA_TYPE_AUDIO:
2033 type = "audio";
2034 snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate);
2035 break;
2036 case AVMEDIA_TYPE_VIDEO:
2037 type = "video";
2038 snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height,
2039 st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num);
2040 break;
2041 default:
2042 abort();
2043 }
2044 avio_printf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n",
2045 i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters);
2046 }
2047 avio_printf(pb, "</table>\n");
2048
2049 }
2050 stream = stream->next;
2051 }
2052
2053 /* connection status */
2054 avio_printf(pb, "<h2>Connection Status</h2>\n");
2055
2056 avio_printf(pb, "Number of connections: %d / %d<br>\n",
2057 nb_connections, nb_max_connections);
2058
2059 avio_printf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n",
2060 current_bandwidth, max_bandwidth);
2061
2062 avio_printf(pb, "<table>\n");
2063 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");
2064 c1 = first_http_ctx;
2065 i = 0;
2066 while (c1 != NULL) {
2067 int bitrate;
2068 int j;
2069
2070 bitrate = 0;
2071 if (c1->stream) {
2072 for (j = 0; j < c1->stream->nb_streams; j++) {
2073 if (!c1->stream->feed)
2074 bitrate += c1->stream->streams[j]->codec->bit_rate;
2075 else if (c1->feed_streams[j] >= 0)
2076 bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate;
2077 }
2078 }
2079
2080 i++;
2081 p = inet_ntoa(c1->from_addr.sin_addr);
2082 avio_printf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td align=right>",
2083 i,
2084 c1->stream ? c1->stream->filename : "",
2085 c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
2086 p,
2087 c1->protocol,
2088 http_state[c1->state]);
2089 fmt_bytecount(pb, bitrate);
2090 avio_printf(pb, "<td align=right>");
2091 fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
2092 avio_printf(pb, "<td align=right>");
2093 fmt_bytecount(pb, c1->data_count);
2094 avio_printf(pb, "\n");
2095 c1 = c1->next;
2096 }
2097 avio_printf(pb, "</table>\n");
2098
2099 /* date */
2100 ti = time(NULL);
2101 p = ctime(&ti);
2102 avio_printf(pb, "<hr size=1 noshade>Generated at %s", p);
2103 avio_printf(pb, "</body>\n</html>\n");
2104
2105 len = avio_close_dyn_buf(pb, &c->pb_buffer);
2106 c->buffer_ptr = c->pb_buffer;
2107 c->buffer_end = c->pb_buffer + len;
2108 }
2109
2110 /* check if the parser needs to be opened for stream i */
2111 static void open_parser(AVFormatContext *s, int i)
2112 {
2113 AVStream *st = s->streams[i];
2114 AVCodec *codec;
2115
2116 if (!st->codec->codec) {
2117 codec = avcodec_find_decoder(st->codec->codec_id);
2118 if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
2119 st->codec->parse_only = 1;
2120 if (avcodec_open(st->codec, codec) < 0)
2121 st->codec->parse_only = 0;
2122 }
2123 }
2124 }
2125
2126 static int open_input_stream(HTTPContext *c, const char *info)
2127 {
2128 char buf[128];
2129 char input_filename[1024];
2130 AVFormatContext *s;
2131 int buf_size, i, ret;
2132 int64_t stream_pos;
2133
2134 /* find file name */
2135 if (c->stream->feed) {
2136 strcpy(input_filename, c->stream->feed->feed_filename);
2137 buf_size = FFM_PACKET_SIZE;
2138 /* compute position (absolute time) */
2139 if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
2140 if ((ret = av_parse_time(&stream_pos, buf, 0)) < 0)
2141 return ret;
2142 } else if (av_find_info_tag(buf, sizeof(buf), "buffer", info)) {
2143 int prebuffer = strtol(buf, 0, 10);
2144 stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
2145 } else
2146 stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
2147 } else {
2148 strcpy(input_filename, c->stream->feed_filename);
2149 buf_size = 0;
2150 /* compute position (relative time) */
2151 if (av_find_info_tag(buf, sizeof(buf), "date", info)) {
2152 if ((ret = av_parse_time(&stream_pos, buf, 1)) < 0)
2153 return ret;
2154 } else
2155 stream_pos = 0;
2156 }
2157 if (input_filename[0] == '\0')
2158 return -1;
2159
2160 /* open stream */
2161 if ((ret = av_open_input_file(&s, input_filename, c->stream->ifmt,
2162 buf_size, c->stream->ap_in)) < 0) {
2163 http_log("could not open %s: %d\n", input_filename, ret);
2164 return -1;
2165 }
2166 s->flags |= AVFMT_FLAG_GENPTS;
2167 c->fmt_in = s;
2168 if (strcmp(s->iformat->name, "ffm") && av_find_stream_info(c->fmt_in) < 0) {
2169 http_log("Could not find stream info '%s'\n", input_filename);
2170 av_close_input_file(s);
2171 return -1;
2172 }
2173
2174 /* open each parser */
2175 for(i=0;i<s->nb_streams;i++)
2176 open_parser(s, i);
2177
2178 /* choose stream as clock source (we favorize video stream if
2179 present) for packet sending */
2180 c->pts_stream_index = 0;
2181 for(i=0;i<c->stream->nb_streams;i++) {
2182 if (c->pts_stream_index == 0 &&
2183 c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2184 c->pts_stream_index = i;
2185 }
2186 }
2187
2188 #if 1
2189 if (c->fmt_in->iformat->read_seek)
2190 av_seek_frame(c->fmt_in, -1, stream_pos, 0);
2191 #endif
2192 /* set the start time (needed for maxtime and RTP packet timing) */
2193 c->start_time = cur_time;
2194 c->first_pts = AV_NOPTS_VALUE;
2195 return 0;
2196 }
2197
2198 /* return the server clock (in us) */
2199 static int64_t get_server_clock(HTTPContext *c)
2200 {
2201 /* compute current pts value from system time */
2202 return (cur_time - c->start_time) * 1000;
2203 }
2204
2205 /* return the estimated time at which the current packet must be sent
2206 (in us) */
2207 static int64_t get_packet_send_clock(HTTPContext *c)
2208 {
2209 int bytes_left, bytes_sent, frame_bytes;
2210
2211 frame_bytes = c->cur_frame_bytes;
2212 if (frame_bytes <= 0)
2213 return c->cur_pts;
2214 else {
2215 bytes_left = c->buffer_end - c->buffer_ptr;
2216 bytes_sent = frame_bytes - bytes_left;
2217 return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
2218 }
2219 }
2220
2221
2222 static int http_prepare_data(HTTPContext *c)
2223 {
2224 int i, len, ret;
2225 AVFormatContext *ctx;
2226
2227 av_freep(&c->pb_buffer);
2228 switch(c->state) {
2229 case HTTPSTATE_SEND_DATA_HEADER:
2230 memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
2231 av_metadata_set2(&c->fmt_ctx.metadata, "author" , c->stream->author , 0);
2232 av_metadata_set2(&c->fmt_ctx.metadata, "comment" , c->stream->comment , 0);
2233 av_metadata_set2(&c->fmt_ctx.metadata, "copyright", c->stream->copyright, 0);
2234 av_metadata_set2(&c->fmt_ctx.metadata, "title" , c->stream->title , 0);
2235
2236 for(i=0;i<c->stream->nb_streams;i++) {
2237 AVStream *st;
2238 AVStream *src;
2239 st = av_mallocz(sizeof(AVStream));
2240 c->fmt_ctx.streams[i] = st;
2241 /* if file or feed, then just take streams from FFStream struct */
2242 if (!c->stream->feed ||
2243 c->stream->feed == c->stream)
2244 src = c->stream->streams[i];
2245 else
2246 src = c->stream->feed->streams[c->stream->feed_streams[i]];
2247
2248 *st = *src;
2249 st->priv_data = 0;
2250 st->codec->frame_number = 0; /* XXX: should be done in
2251 AVStream, not in codec */
2252 }
2253 /* set output format parameters */
2254 c->fmt_ctx.oformat = c->stream->fmt;
2255 c->fmt_ctx.nb_streams = c->stream->nb_streams;
2256
2257 c->got_key_frame = 0;
2258
2259 /* prepare header and save header data in a stream */
2260 if (avio_open_dyn_buf(&c->fmt_ctx.pb) < 0) {
2261 /* XXX: potential leak */
2262 return -1;
2263 }
2264 c->fmt_ctx.pb->seekable = 0;
2265
2266 /*
2267 * HACK to avoid mpeg ps muxer to spit many underflow errors
2268 * Default value from Libav
2269 * Try to set it use configuration option
2270 */
2271 c->fmt_ctx.preload = (int)(0.5*AV_TIME_BASE);
2272 c->fmt_ctx.max_delay = (int)(0.7*AV_TIME_BASE);
2273
2274 av_set_parameters(&c->fmt_ctx, NULL);
2275 if (av_write_header(&c->fmt_ctx) < 0) {
2276 http_log("Error writing output header\n");
2277 return -1;
2278 }
2279 av_metadata_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 = NULL;
2716 AVIOContext *pb;
2717 AVInputFormat *fmt_in;
2718 int i;
2719
2720 /* use feed output format name to find corresponding input format */
2721 fmt_in = av_find_input_format(feed->fmt->name);
2722 if (!fmt_in)
2723 goto fail;
2724
2725 pb = avio_alloc_context(c->buffer, c->buffer_end - c->buffer,
2726 0, NULL, NULL, NULL, NULL);
2727 pb->seekable = 0;
2728
2729 if (av_open_input_stream(&s, pb, c->stream->feed_filename, fmt_in, NULL) < 0) {
2730 av_free(pb);
2731 goto fail;
2732 }
2733
2734 /* Now we have the actual streams */
2735 if (s->nb_streams != feed->nb_streams) {
2736 av_close_input_stream(s);
2737 av_free(pb);
2738 http_log("Feed '%s' stream number does not match registered feed\n",
2739 c->stream->feed_filename);
2740 goto fail;
2741 }
2742
2743 for (i = 0; i < s->nb_streams; i++) {
2744 AVStream *fst = feed->streams[i];
2745 AVStream *st = s->streams[i];
2746 avcodec_copy_context(fst->codec, st->codec);
2747 }
2748
2749 av_close_input_stream(s);
2750 av_free(pb);
2751 }
2752 c->buffer_ptr = c->buffer;
2753 }
2754
2755 return 0;
2756 fail:
2757 c->stream->feed_opened = 0;
2758 close(c->feed_fd);
2759 /* wake up any waiting connections to stop waiting for feed */
2760 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2761 if (c1->state == HTTPSTATE_WAIT_FEED &&
2762 c1->stream->feed == c->stream->feed)
2763 c1->state = HTTPSTATE_SEND_DATA_TRAILER;
2764 }
2765 return -1;
2766 }
2767
2768 /********************************************************************/
2769 /* RTSP handling */
2770
2771 static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number)
2772 {
2773 const char *str;
2774 time_t ti;
2775 struct tm *tm;
2776 char buf2[32];
2777
2778 switch(error_number) {
2779 case RTSP_STATUS_OK:
2780 str = "OK";
2781 break;
2782 case RTSP_STATUS_METHOD:
2783 str = "Method Not Allowed";
2784 break;
2785 case RTSP_STATUS_BANDWIDTH:
2786 str = "Not Enough Bandwidth";
2787 break;
2788 case RTSP_STATUS_SESSION:
2789 str = "Session Not Found";
2790 break;
2791 case RTSP_STATUS_STATE:
2792 str = "Method Not Valid in This State";
2793 break;
2794 case RTSP_STATUS_AGGREGATE:
2795 str = "Aggregate operation not allowed";
2796 break;
2797 case RTSP_STATUS_ONLY_AGGREGATE:
2798 str = "Only aggregate operation allowed";
2799 break;
2800 case RTSP_STATUS_TRANSPORT:
2801 str = "Unsupported transport";
2802 break;
2803 case RTSP_STATUS_INTERNAL:
2804 str = "Internal Server Error";
2805 break;
2806 case RTSP_STATUS_SERVICE:
2807 str = "Service Unavailable";
2808 break;
2809 case RTSP_STATUS_VERSION:
2810 str = "RTSP Version not supported";
2811 break;
2812 default:
2813 str = "Unknown Error";
2814 break;
2815 }
2816
2817 avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str);
2818 avio_printf(c->pb, "CSeq: %d\r\n", c->seq);
2819
2820 /* output GMT time */
2821 ti = time(NULL);
2822 tm = gmtime(&ti);
2823 strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm);
2824 avio_printf(c->pb, "Date: %s GMT\r\n", buf2);
2825 }
2826
2827 static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number)
2828 {
2829 rtsp_reply_header(c, error_number);
2830 avio_printf(c->pb, "\r\n");
2831 }
2832
2833 static int rtsp_parse_request(HTTPContext *c)
2834 {
2835 const char *p, *p1, *p2;
2836 char cmd[32];
2837 char url[1024];
2838 char protocol[32];
2839 char line[1024];
2840 int len;
2841 RTSPMessageHeader header1, *header = &header1;
2842
2843 c->buffer_ptr[0] = '\0';
2844 p = c->buffer;
2845
2846 get_word(cmd, sizeof(cmd), &p);
2847 get_word(url, sizeof(url), &p);
2848 get_word(protocol, sizeof(protocol), &p);
2849
2850 av_strlcpy(c->method, cmd, sizeof(c->method));
2851 av_strlcpy(c->url, url, sizeof(c->url));
2852 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
2853
2854 if (avio_open_dyn_buf(&c->pb) < 0) {
2855 /* XXX: cannot do more */
2856 c->pb = NULL; /* safety */
2857 return -1;
2858 }
2859
2860 /* check version name */
2861 if (strcmp(protocol, "RTSP/1.0") != 0) {
2862 rtsp_reply_error(c, RTSP_STATUS_VERSION);
2863 goto the_end;
2864 }
2865
2866 /* parse each header line */
2867 memset(header, 0, sizeof(*header));
2868 /* skip to next line */
2869 while (*p != '\n' && *p != '\0')
2870 p++;
2871 if (*p == '\n')
2872 p++;
2873 while (*p != '\0') {
2874 p1 = memchr(p, '\n', (char *)c->buffer_ptr - p);
2875 if (!p1)
2876 break;
2877 p2 = p1;
2878 if (p2 > p && p2[-1] == '\r')
2879 p2--;
2880 /* skip empty line */
2881 if (p2 == p)
2882 break;
2883 len = p2 - p;
2884 if (len > sizeof(line) - 1)
2885 len = sizeof(line) - 1;
2886 memcpy(line, p, len);
2887 line[len] = '\0';
2888 ff_rtsp_parse_line(header, line, NULL, NULL);
2889 p = p1 + 1;
2890 }
2891
2892 /* handle sequence number */
2893 c->seq = header->seq;
2894
2895 if (!strcmp(cmd, "DESCRIBE"))
2896 rtsp_cmd_describe(c, url);
2897 else if (!strcmp(cmd, "OPTIONS"))
2898 rtsp_cmd_options(c, url);
2899 else if (!strcmp(cmd, "SETUP"))
2900 rtsp_cmd_setup(c, url, header);
2901 else if (!strcmp(cmd, "PLAY"))
2902 rtsp_cmd_play(c, url, header);
2903 else if (!strcmp(cmd, "PAUSE"))
2904 rtsp_cmd_pause(c, url, header);
2905 else if (!strcmp(cmd, "TEARDOWN"))
2906 rtsp_cmd_teardown(c, url, header);
2907 else
2908 rtsp_reply_error(c, RTSP_STATUS_METHOD);
2909
2910 the_end:
2911 len = avio_close_dyn_buf(c->pb, &c->pb_buffer);
2912 c->pb = NULL; /* safety */
2913 if (len < 0) {
2914 /* XXX: cannot do more */
2915 return -1;
2916 }
2917 c->buffer_ptr = c->pb_buffer;
2918 c->buffer_end = c->pb_buffer + len;
2919 c->state = RTSPSTATE_SEND_REPLY;
2920 return 0;
2921 }
2922
2923 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
2924 struct in_addr my_ip)
2925 {
2926 AVFormatContext *avc;
2927 AVStream *avs = NULL;
2928 int i;
2929
2930 avc = avformat_alloc_context();
2931 if (avc == NULL) {
2932 return -1;
2933 }
2934 av_metadata_set2(&avc->metadata, "title",
2935 stream->title[0] ? stream->title : "No Title", 0);
2936 avc->nb_streams = stream->nb_streams;
2937 if (stream->is_multicast) {
2938 snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d",
2939 inet_ntoa(stream->multicast_ip),
2940 stream->multicast_port, stream->multicast_ttl);
2941 } else {
2942 snprintf(avc->filename, 1024, "rtp://0.0.0.0");
2943 }
2944
2945 if (avc->nb_streams >= INT_MAX/sizeof(*avc->streams) ||
2946 !(avc->streams = av_malloc(avc->nb_streams * sizeof(*avc->streams))))
2947 goto sdp_done;
2948 if (avc->nb_streams >= INT_MAX/sizeof(*avs) ||
2949 !(avs = av_malloc(avc->nb_streams * sizeof(*avs))))
2950 goto sdp_done;
2951
2952 for(i = 0; i < stream->nb_streams; i++) {
2953 avc->streams[i] = &avs[i];
2954 avc->streams[i]->codec = stream->streams[i]->codec;
2955 }
2956 *pbuffer = av_mallocz(2048);
2957 av_sdp_create(&avc, 1, *pbuffer, 2048);
2958
2959 sdp_done:
2960 av_free(avc->streams);
2961 av_metadata_free(&avc->metadata);
2962 av_free(avc);
2963 av_free(avs);
2964
2965 return strlen(*pbuffer);
2966 }
2967
2968 static void rtsp_cmd_options(HTTPContext *c, const char *url)
2969 {
2970 // rtsp_reply_header(c, RTSP_STATUS_OK);
2971 avio_printf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK");
2972 avio_printf(c->pb, "CSeq: %d\r\n", c->seq);
2973 avio_printf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
2974 avio_printf(c->pb, "\r\n");
2975 }
2976
2977 static void rtsp_cmd_describe(HTTPContext *c, const char *url)
2978 {
2979 FFStream *stream;
2980 char path1[1024];
2981 const char *path;
2982 uint8_t *content;
2983 int content_length, len;
2984 struct sockaddr_in my_addr;
2985
2986 /* find which url is asked */
2987 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2988 path = path1;
2989 if (*path == '/')
2990 path++;
2991
2992 for(stream = first_stream; stream != NULL; stream = stream->next) {
2993 if (!stream->is_feed &&
2994 stream->fmt && !strcmp(stream->fmt->name, "rtp") &&
2995 !strcmp(path, stream->filename)) {
2996 goto found;
2997 }
2998 }
2999 /* no stream found */
3000 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
3001 return;
3002
3003 found:
3004 /* prepare the media description in sdp format */
3005
3006 /* get the host IP */
3007 len = sizeof(my_addr);
3008 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
3009 content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr);
3010 if (content_length < 0) {
3011 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3012 return;
3013 }
3014 rtsp_reply_header(c, RTSP_STATUS_OK);
3015 avio_printf(c->pb, "Content-Base: %s/\r\n", url);
3016 avio_printf(c->pb, "Content-Type: application/sdp\r\n");
3017 avio_printf(c->pb, "Content-Length: %d\r\n", content_length);
3018 avio_printf(c->pb, "\r\n");
3019 avio_write(c->pb, content, content_length);
3020 av_free(content);
3021 }
3022
3023 static HTTPContext *find_rtp_session(const char *session_id)
3024 {
3025 HTTPContext *c;
3026
3027 if (session_id[0] == '\0')
3028 return NULL;
3029
3030 for(c = first_http_ctx; c != NULL; c = c->next) {
3031 if (!strcmp(c->session_id, session_id))
3032 return c;
3033 }
3034 return NULL;
3035 }
3036
3037 static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport)
3038 {
3039 RTSPTransportField *th;
3040 int i;
3041
3042 for(i=0;i<h->nb_transports;i++) {
3043 th = &h->transports[i];
3044 if (th->lower_transport == lower_transport)
3045 return th;
3046 }
3047 return NULL;
3048 }
3049
3050 static void rtsp_cmd_setup(HTTPContext *c, const char *url,
3051 RTSPMessageHeader *h)
3052 {
3053 FFStream *stream;
3054 int stream_index, rtp_port, rtcp_port;
3055 char buf[1024];
3056 char path1[1024];
3057 const char *path;
3058 HTTPContext *rtp_c;
3059 RTSPTransportField *th;
3060 struct sockaddr_in dest_addr;
3061 RTSPActionServerSetup setup;
3062
3063 /* find which url is asked */
3064 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3065 path = path1;
3066 if (*path == '/')
3067 path++;
3068
3069 /* now check each stream */
3070 for(stream = first_stream; stream != NULL; stream = stream->next) {
3071 if (!stream->is_feed &&
3072 stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
3073 /* accept aggregate filenames only if single stream */
3074 if (!strcmp(path, stream->filename)) {
3075 if (stream->nb_streams != 1) {
3076 rtsp_reply_error(c, RTSP_STATUS_AGGREGATE);
3077 return;
3078 }
3079 stream_index = 0;
3080 goto found;
3081 }
3082
3083 for(stream_index = 0; stream_index < stream->nb_streams;
3084 stream_index++) {
3085 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3086 stream->filename, stream_index);
3087 if (!strcmp(path, buf))
3088 goto found;
3089 }
3090 }
3091 }
3092 /* no stream found */
3093 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
3094 return;
3095 found:
3096
3097 /* generate session id if needed */
3098 if (h->session_id[0] == '\0')
3099 snprintf(h->session_id, sizeof(h->session_id), "%08x%08x",
3100 av_lfg_get(&random_state), av_lfg_get(&random_state));
3101
3102 /* find rtp session, and create it if none found */
3103 rtp_c = find_rtp_session(h->session_id);
3104 if (!rtp_c) {
3105 /* always prefer UDP */
3106 th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP);
3107 if (!th) {
3108 th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP);
3109 if (!th) {
3110 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3111 return;
3112 }
3113 }
3114
3115 rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id,
3116 th->lower_transport);
3117 if (!rtp_c) {
3118 rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH);
3119 return;
3120 }
3121
3122 /* open input stream */
3123 if (open_input_stream(rtp_c, "") < 0) {
3124 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3125 return;
3126 }
3127 }
3128
3129 /* test if stream is OK (test needed because several SETUP needs
3130 to be done for a given file) */
3131 if (rtp_c->stream != stream) {
3132 rtsp_reply_error(c, RTSP_STATUS_SERVICE);
3133 return;
3134 }
3135
3136 /* test if stream is already set up */
3137 if (rtp_c->rtp_ctx[stream_index]) {
3138 rtsp_reply_error(c, RTSP_STATUS_STATE);
3139 return;
3140 }
3141
3142 /* check transport */
3143 th = find_transport(h, rtp_c->rtp_protocol);
3144 if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
3145 th->client_port_min <= 0)) {
3146 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3147 return;
3148 }
3149
3150 /* setup default options */
3151 setup.transport_option[0] = '\0';
3152 dest_addr = rtp_c->from_addr;
3153 dest_addr.sin_port = htons(th->client_port_min);
3154
3155 /* setup stream */
3156 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) {
3157 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3158 return;
3159 }
3160
3161 /* now everything is OK, so we can send the connection parameters */
3162 rtsp_reply_header(c, RTSP_STATUS_OK);
3163 /* session ID */
3164 avio_printf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3165
3166 switch(rtp_c->rtp_protocol) {
3167 case RTSP_LOWER_TRANSPORT_UDP:
3168 rtp_port = rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]);
3169 rtcp_port = rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]);
3170 avio_printf(c->pb, "Transport: RTP/AVP/UDP;unicast;"
3171 "client_port=%d-%d;server_port=%d-%d",
3172 th->client_port_min, th->client_port_max,
3173 rtp_port, rtcp_port);
3174 break;
3175 case RTSP_LOWER_TRANSPORT_TCP:
3176 avio_printf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d",
3177 stream_index * 2, stream_index * 2 + 1);
3178 break;
3179 default:
3180 break;
3181 }
3182 if (setup.transport_option[0] != '\0')
3183 avio_printf(c->pb, ";%s", setup.transport_option);
3184 avio_printf(c->pb, "\r\n");
3185
3186
3187 avio_printf(c->pb, "\r\n");
3188 }
3189
3190
3191 /* find an rtp connection by using the session ID. Check consistency
3192 with filename */
3193 static HTTPContext *find_rtp_session_with_url(const char *url,
3194 const char *session_id)
3195 {
3196 HTTPContext *rtp_c;
3197 char path1[1024];
3198 const char *path;
3199 char buf[1024];
3200 int s, len;
3201
3202 rtp_c = find_rtp_session(session_id);
3203 if (!rtp_c)
3204 return NULL;
3205
3206 /* find which url is asked */
3207 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3208 path = path1;
3209 if (*path == '/')
3210 path++;
3211 if(!strcmp(path, rtp_c->stream->filename)) return rtp_c;
3212 for(s=0; s<rtp_c->stream->nb_streams; ++s) {
3213 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3214 rtp_c->stream->filename, s);
3215 if(!strncmp(path, buf, sizeof(buf))) {
3216 // XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1?
3217 return rtp_c;
3218 }
3219 }
3220 len = strlen(path);
3221 if (len > 0 && path[len - 1] == '/' &&
3222 !strncmp(path, rtp_c->stream->filename, len - 1))
3223 return rtp_c;
3224 return NULL;
3225 }
3226
3227 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3228 {
3229 HTTPContext *rtp_c;
3230
3231 rtp_c = find_rtp_session_with_url(url, h->session_id);
3232 if (!rtp_c) {
3233 rtsp_reply_error(c, RTSP_STATUS_SESSION);
3234 return;
3235 }
3236
3237 if (rtp_c->state != HTTPSTATE_SEND_DATA &&
3238 rtp_c->state != HTTPSTATE_WAIT_FEED &&
3239 rtp_c->state != HTTPSTATE_READY) {
3240 rtsp_reply_error(c, RTSP_STATUS_STATE);
3241 return;
3242 }
3243
3244 rtp_c->state = HTTPSTATE_SEND_DAT