Revert commit:
[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 FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #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/network.h"
33 #include "libavformat/os_support.h"
34 #include "libavformat/rtpdec.h"
35 #include "libavformat/rtsp.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/lfg.h"
38 #include "libavutil/random_seed.h"
39 #include "libavcore/parseutils.h"
40 #include "libavcodec/opt.h"
41 #include <stdarg.h>
42 #include <unistd.h>
43 #include <fcntl.h>
44 #include <sys/ioctl.h>
45 #if HAVE_POLL_H
46 #include <poll.h>
47 #endif
48 #include <errno.h>
49 #include <sys/time.h>
50 #include <time.h>
51 #include <sys/wait.h>
52 #include <signal.h>
53 #if HAVE_DLFCN_H
54 #include <dlfcn.h>
55 #endif
56
57 #include "cmdutils.h"
58
59 const char program_name[] = "FFserver";
60 const int program_birth_year = 2000;
61
62 static const OptionDef options[];
63
64 enum HTTPState {
65 HTTPSTATE_WAIT_REQUEST,
66 HTTPSTATE_SEND_HEADER,
67 HTTPSTATE_SEND_DATA_HEADER,
68 HTTPSTATE_SEND_DATA, /* sending TCP or UDP data */
69 HTTPSTATE_SEND_DATA_TRAILER,
70 HTTPSTATE_RECEIVE_DATA,
71 HTTPSTATE_WAIT_FEED, /* wait for data from the feed */
72 HTTPSTATE_READY,
73
74 RTSPSTATE_WAIT_REQUEST,
75 RTSPSTATE_SEND_REPLY,
76 RTSPSTATE_SEND_PACKET,
77 };
78
79 static const char *http_state[] = {
80 "HTTP_WAIT_REQUEST",
81 "HTTP_SEND_HEADER",
82
83 "SEND_DATA_HEADER",
84 "SEND_DATA",
85 "SEND_DATA_TRAILER",
86 "RECEIVE_DATA",
87 "WAIT_FEED",
88 "READY",
89
90 "RTSP_WAIT_REQUEST",
91 "RTSP_SEND_REPLY",
92 "RTSP_SEND_PACKET",
93 };
94
95 #define IOBUFFER_INIT_SIZE 8192
96
97 /* timeouts are in ms */
98 #define HTTP_REQUEST_TIMEOUT (15 * 1000)
99 #define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000)
100
101 #define SYNC_TIMEOUT (10 * 1000)
102
103 typedef struct RTSPActionServerSetup {
104 uint32_t ipaddr;
105 char transport_option[512];
106 } RTSPActionServerSetup;
107
108 typedef struct {
109 int64_t count1, count2;
110 int64_t time1, time2;
111 } DataRateData;
112
113 /* context associated with one connection */
114 typedef struct HTTPContext {
115 enum HTTPState state;
116 int fd; /* socket file descriptor */
117 struct sockaddr_in from_addr; /* origin */
118 struct pollfd *poll_entry; /* used when polling */
119 int64_t timeout;
120 uint8_t *buffer_ptr, *buffer_end;
121 int http_error;
122 int post;
123 int chunked_encoding;
124 int chunk_size; /* 0 if it needs to be read */
125 struct HTTPContext *next;
126 int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
127 int64_t data_count;
128 /* feed input */
129 int feed_fd;
130 /* input format handling */
131 AVFormatContext *fmt_in;
132 int64_t start_time; /* In milliseconds - this wraps fairly often */
133 int64_t first_pts; /* initial pts value */
134 int64_t cur_pts; /* current pts value from the stream in us */
135 int64_t cur_frame_duration; /* duration of the current frame in us */
136 int cur_frame_bytes; /* output frame size, needed to compute
137 the time at which we send each
138 packet */
139 int pts_stream_index; /* stream we choose as clock reference */
140 int64_t cur_clock; /* current clock reference value in us */
141 /* output format handling */
142 struct FFStream *stream;
143 /* -1 is invalid stream */
144 int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
145 int switch_feed_streams[MAX_STREAMS]; /* index of streams in the feed */
146 int switch_pending;
147 AVFormatContext fmt_ctx; /* instance of FFStream for one user */
148 int last_packet_sent; /* true if last data packet was sent */
149 int suppress_log;
150 DataRateData datarate;
151 int wmp_client_id;
152 char protocol[16];
153 char method[16];
154 char url[128];
155 int buffer_size;
156 uint8_t *buffer;
157 int is_packetized; /* if true, the stream is packetized */
158 int packet_stream_index; /* current stream for output in state machine */
159
160 /* RTSP state specific */
161 uint8_t *pb_buffer; /* XXX: use that in all the code */
162 ByteIOContext *pb;
163 int seq; /* RTSP sequence number */
164
165 /* RTP state specific */
166 enum RTSPLowerTransport rtp_protocol;
167 char session_id[32]; /* session id */
168 AVFormatContext *rtp_ctx[MAX_STREAMS];
169
170 /* RTP/UDP specific */
171 URLContext *rtp_handles[MAX_STREAMS];
172
173 /* RTP/TCP specific */
174 struct HTTPContext *rtsp_c;
175 uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end;
176 } HTTPContext;
177
178 /* each generated stream is described here */
179 enum StreamType {
180 STREAM_TYPE_LIVE,
181 STREAM_TYPE_STATUS,
182 STREAM_TYPE_REDIRECT,
183 };
184
185 enum IPAddressAction {
186 IP_ALLOW = 1,
187 IP_DENY,
188 };
189
190 typedef struct IPAddressACL {
191 struct IPAddressACL *next;
192 enum IPAddressAction action;
193 /* These are in host order */
194 struct in_addr first;
195 struct in_addr last;
196 } IPAddressACL;
197
198 /* description of each stream of the ffserver.conf file */
199 typedef struct FFStream {
200 enum StreamType stream_type;
201 char filename[1024]; /* stream filename */
202 struct FFStream *feed; /* feed we are using (can be null if
203 coming from file) */
204 AVFormatParameters *ap_in; /* input parameters */
205 AVInputFormat *ifmt; /* if non NULL, force input format */
206 AVOutputFormat *fmt;
207 IPAddressACL *acl;
208 char dynamic_acl[1024];
209 int nb_streams;
210 int prebuffer; /* Number of millseconds early to start */
211 int64_t max_time; /* Number of milliseconds to run */
212 int send_on_key;
213 AVStream *streams[MAX_STREAMS];
214 int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
215 char feed_filename[1024]; /* file name of the feed storage, or
216 input file name for a stream */
217 char author[512];
218 char title[512];
219 char copyright[512];
220 char comment[512];
221 pid_t pid; /* Of ffmpeg process */
222 time_t pid_start; /* Of ffmpeg process */
223 char **child_argv;
224 struct FFStream *next;
225 unsigned bandwidth; /* bandwidth, in kbits/s */
226 /* RTSP options */
227 char *rtsp_option;
228 /* multicast specific */
229 int is_multicast;
230 struct in_addr multicast_ip;
231 int multicast_port; /* first port used for multicast */
232 int multicast_ttl;
233 int loop; /* if true, send the stream in loops (only meaningful if file) */
234
235 /* feed specific */
236 int feed_opened; /* true if someone is writing to the feed */
237 int is_feed; /* true if it is a feed */
238 int readonly; /* True if writing is prohibited to the file */
239 int truncate; /* True if feeder connection truncate the feed file */
240 int conns_served;
241 int64_t bytes_served;
242 int64_t feed_max_size; /* maximum storage size, zero means unlimited */
243 int64_t feed_write_index; /* current write position in feed (it wraps around) */
244 int64_t feed_size; /* current size of feed */
245 struct FFStream *next_feed;
246 } FFStream;
247
248 typedef struct FeedData {
249 long long data_count;
250 float avg_frame_size; /* frame size averaged over last frames with exponential mean */
251 } FeedData;
252
253 static struct sockaddr_in my_http_addr;
254 static struct sockaddr_in my_rtsp_addr;
255
256 static char logfilename[1024];
257 static HTTPContext *first_http_ctx;
258 static FFStream *first_feed; /* contains only feeds */
259 static FFStream *first_stream; /* contains all streams, including feeds */
260
261 static void new_connection(int server_fd, int is_rtsp);
262 static void close_connection(HTTPContext *c);
263
264 /* HTTP handling */
265 static int handle_connection(HTTPContext *c);
266 static int http_parse_request(HTTPContext *c);
267 static int http_send_data(HTTPContext *c);
268 static void compute_status(HTTPContext *c);
269 static int open_input_stream(HTTPContext *c, const char *info);
270 static int http_start_receive_data(HTTPContext *c);
271 static int http_receive_data(HTTPContext *c);
272
273 /* RTSP handling */
274 static int rtsp_parse_request(HTTPContext *c);
275 static void rtsp_cmd_describe(HTTPContext *c, const char *url);
276 static void rtsp_cmd_options(HTTPContext *c, const char *url);
277 static void rtsp_cmd_setup(HTTPContext *c, const char *url, RTSPMessageHeader *h);
278 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h);
279 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h);
280 static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPMessageHeader *h);
281
282 /* SDP handling */
283 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
284 struct in_addr my_ip);
285
286 /* RTP handling */
287 static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
288 FFStream *stream, const char *session_id,
289 enum RTSPLowerTransport rtp_protocol);
290 static int rtp_new_av_stream(HTTPContext *c,
291 int stream_index, struct sockaddr_in *dest_addr,
292 HTTPContext *rtsp_c);
293
294 static const char *my_program_name;
295 static const char *my_program_dir;
296
297 static const char *config_filename = "/etc/ffserver.conf";
298
299 static int ffserver_debug;
300 static int ffserver_daemon;
301 static int no_launch;
302 static int need_to_start_children;
303
304 /* maximum number of simultaneous HTTP connections */
305 static unsigned int nb_max_http_connections = 2000;
306 static unsigned int nb_max_connections = 5;
307 static unsigned int nb_connections;
308
309 static uint64_t max_bandwidth = 1000;
310 static uint64_t current_bandwidth;
311
312 static int64_t cur_time; // Making this global saves on passing it around everywhere
313
314 static AVLFG random_state;
315
316 static FILE *logfile = NULL;
317
318 /* FIXME: make ffserver work with IPv6 */
319 /* resolve host with also IP address parsing */
320 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
321 {
322
323 if (!ff_inet_aton(hostname, sin_addr)) {
324 #if HAVE_GETADDRINFO
325 struct addrinfo *ai, *cur;
326 struct addrinfo hints;
327 memset(&hints, 0, sizeof(hints));
328 hints.ai_family = AF_INET;
329 if (getaddrinfo(hostname, NULL, &hints, &ai))
330 return -1;
331 /* getaddrinfo returns a linked list of addrinfo structs.
332 * Even if we set ai_family = AF_INET above, make sure
333 * that the returned one actually is of the correct type. */
334 for (cur = ai; cur; cur = cur->ai_next) {
335 if (cur->ai_family == AF_INET) {
336 *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
337 freeaddrinfo(ai);
338 return 0;
339 }
340 }
341 freeaddrinfo(ai);
342 return -1;
343 #else
344 struct hostent *hp;
345 hp = gethostbyname(hostname);
346 if (!hp)
347 return -1;
348 memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
349 #endif
350 }
351 return 0;
352 }
353
354 static char *ctime1(char *buf2)
355 {
356 time_t ti;
357 char *p;
358
359 ti = time(NULL);
360 p = ctime(&ti);
361 strcpy(buf2, p);
362 p = buf2 + strlen(p) - 1;
363 if (*p == '\n')
364 *p = '\0';
365 return buf2;
366 }
367
368 static void http_vlog(const char *fmt, va_list vargs)
369 {
370 static int print_prefix = 1;
371 if (logfile) {
372 if (print_prefix) {
373 char buf[32];
374 ctime1(buf);
375 fprintf(logfile, "%s ", buf);
376 }
377 print_prefix = strstr(fmt, "\n") != NULL;
378 vfprintf(logfile, fmt, vargs);
379 fflush(logfile);
380 }
381 }
382
383 static void __attribute__ ((format (printf, 1, 2))) http_log(const char *fmt, ...)
384 {
385 va_list vargs;
386 va_start(vargs, fmt);
387 http_vlog(fmt, vargs);
388 va_end(vargs);
389 }
390
391 static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs)
392 {
393 static int print_prefix = 1;
394 AVClass *avc = ptr ? *(AVClass**)ptr : NULL;
395 if (level > av_log_get_level())
396 return;
397 if (print_prefix && avc)
398 http_log("[%s @ %p]", avc->item_name(ptr), ptr);
399 print_prefix = strstr(fmt, "\n") != NULL;
400 http_vlog(fmt, vargs);
401 }
402
403 static void log_connection(HTTPContext *c)
404 {
405 if (c->suppress_log)
406 return;
407
408 http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n",
409 inet_ntoa(c->from_addr.sin_addr), c->method, c->url,
410 c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
411 }
412
413 static void update_datarate(DataRateData *drd, int64_t count)
414 {
415 if (!drd->time1 && !drd->count1) {
416 drd->time1 = drd->time2 = cur_time;
417 drd->count1 = drd->count2 = count;
418 } else if (cur_time - drd->time2 > 5000) {
419 drd->time1 = drd->time2;
420 drd->count1 = drd->count2;
421 drd->time2 = cur_time;
422 drd->count2 = count;
423 }
424 }
425
426 /* In bytes per second */
427 static int compute_datarate(DataRateData *drd, int64_t count)
428 {
429 if (cur_time == drd->time1)
430 return 0;
431
432 return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
433 }
434
435
436 static void start_children(FFStream *feed)
437 {
438 if (no_launch)
439 return;
440
441 for (; feed; feed = feed->next) {
442 if (feed->child_argv && !feed->pid) {
443 feed->pid_start = time(0);
444
445 feed->pid = fork();
446
447 if (feed->pid < 0) {
448 http_log("Unable to create children\n");
449 exit(1);
450 }
451 if (!feed->pid) {
452 /* In child */
453 char pathname[1024];
454 char *slash;
455 int i;
456
457 av_strlcpy(pathname, my_program_name, sizeof(pathname));
458
459 slash = strrchr(pathname, '/');
460 if (!slash)
461 slash = pathname;
462 else
463 slash++;
464 strcpy(slash, "ffmpeg");
465
466 http_log("Launch commandline: ");
467 http_log("%s ", pathname);
468 for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++)
469 http_log("%s ", feed->child_argv[i]);
470 http_log("\n");
471
472 for (i = 3; i < 256; i++)
473 close(i);
474
475 if (!ffserver_debug) {
476 i = open("/dev/null", O_RDWR);
477 if (i != -1) {
478 dup2(i, 0);
479 dup2(i, 1);
480 dup2(i, 2);
481 close(i);
482 }
483 }
484
485 /* This is needed to make relative pathnames work */
486 chdir(my_program_dir);
487
488 signal(SIGPIPE, SIG_DFL);
489
490 execvp(pathname, feed->child_argv);
491
492 _exit(1);
493 }
494 }
495 }
496 }
497
498 /* open a listening socket */
499 static int socket_open_listen(struct sockaddr_in *my_addr)
500 {
501 int server_fd, tmp;
502
503 server_fd = socket(AF_INET,SOCK_STREAM,0);
504 if (server_fd < 0) {
505 perror ("socket");
506 return -1;
507 }
508
509 tmp = 1;
510 setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
511
512 if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
513 char bindmsg[32];
514 snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port));
515 perror (bindmsg);
516 closesocket(server_fd);
517 return -1;
518 }
519
520 if (listen (server_fd, 5) < 0) {
521 perror ("listen");
522 closesocket(server_fd);
523 return -1;
524 }
525 ff_socket_nonblock(server_fd, 1);
526
527 return server_fd;
528 }
529
530 /* start all multicast streams */
531 static void start_multicast(void)
532 {
533 FFStream *stream;
534 char session_id[32];
535 HTTPContext *rtp_c;
536 struct sockaddr_in dest_addr;
537 int default_port, stream_index;
538
539 default_port = 6000;
540 for(stream = first_stream; stream != NULL; stream = stream->next) {
541 if (stream->is_multicast) {
542 /* open the RTP connection */
543 snprintf(session_id, sizeof(session_id), "%08x%08x",
544 av_lfg_get(&random_state), av_lfg_get(&random_state));
545
546 /* choose a port if none given */
547 if (stream->multicast_port == 0) {
548 stream->multicast_port = default_port;
549 default_port += 100;
550 }
551
552 dest_addr.sin_family = AF_INET;
553 dest_addr.sin_addr = stream->multicast_ip;
554 dest_addr.sin_port = htons(stream->multicast_port);
555
556 rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
557 RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
558 if (!rtp_c)
559 continue;
560
561 if (open_input_stream(rtp_c, "") < 0) {
562 http_log("Could not open input stream for stream '%s'\n",
563 stream->filename);
564 continue;
565 }
566
567 /* open each RTP stream */
568 for(stream_index = 0; stream_index < stream->nb_streams;
569 stream_index++) {
570 dest_addr.sin_port = htons(stream->multicast_port +
571 2 * stream_index);
572 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) {
573 http_log("Could not open output stream '%s/streamid=%d'\n",
574 stream->filename, stream_index);
575 exit(1);
576 }
577 }
578
579 /* change state to send data */
580 rtp_c->state = HTTPSTATE_SEND_DATA;
581 }
582 }
583 }
584
585 /* main loop of the http server */
586 static int http_server(void)
587 {
588 int server_fd = 0, rtsp_server_fd = 0;
589 int ret, delay, delay1;
590 struct pollfd *poll_table, *poll_entry;
591 HTTPContext *c, *c_next;
592
593 if(!(poll_table = av_mallocz((nb_max_http_connections + 2)*sizeof(*poll_table)))) {
594 http_log("Impossible to allocate a poll table handling %d connections.\n", nb_max_http_connections);
595 return -1;
596 }
597
598 if (my_http_addr.sin_port) {
599 server_fd = socket_open_listen(&my_http_addr);
600 if (server_fd < 0)
601 return -1;
602 }
603
604 if (my_rtsp_addr.sin_port) {
605 rtsp_server_fd = socket_open_listen(&my_rtsp_addr);
606 if (rtsp_server_fd < 0)
607 return -1;
608 }
609
610 if (!rtsp_server_fd && !server_fd) {
611 http_log("HTTP and RTSP disabled.\n");
612 return -1;
613 }
614
615 http_log("FFserver started.\n");
616
617 start_children(first_feed);
618
619 start_multicast();
620
621 for(;;) {
622 poll_entry = poll_table;
623 if (server_fd) {
624 poll_entry->fd = server_fd;
625 poll_entry->events = POLLIN;
626 poll_entry++;
627 }
628 if (rtsp_server_fd) {
629 poll_entry->fd = rtsp_server_fd;
630 poll_entry->events = POLLIN;
631 poll_entry++;
632 }
633
634 /* wait for events on each HTTP handle */
635 c = first_http_ctx;
636 delay = 1000;
637 while (c != NULL) {
638 int fd;
639 fd = c->fd;
640 switch(c->state) {
641 case HTTPSTATE_SEND_HEADER:
642 case RTSPSTATE_SEND_REPLY:
643 case RTSPSTATE_SEND_PACKET:
644 c->poll_entry = poll_entry;
645 poll_entry->fd = fd;
646 poll_entry->events = POLLOUT;
647 poll_entry++;
648 break;
649 case HTTPSTATE_SEND_DATA_HEADER:
650 case HTTPSTATE_SEND_DATA:
651 case HTTPSTATE_SEND_DATA_TRAILER:
652 if (!c->is_packetized) {
653 /* for TCP, we output as much as we can (may need to put a limit) */
654 c->poll_entry = poll_entry;
655 poll_entry->fd = fd;
656 poll_entry->events = POLLOUT;
657 poll_entry++;
658 } else {
659 /* when ffserver is doing the timing, we work by
660 looking at which packet need to be sent every
661 10 ms */
662 delay1 = 10; /* one tick wait XXX: 10 ms assumed */
663 if (delay1 < delay)
664 delay = delay1;
665 }
666 break;
667 case HTTPSTATE_WAIT_REQUEST:
668 case HTTPSTATE_RECEIVE_DATA:
669 case HTTPSTATE_WAIT_FEED:
670 case RTSPSTATE_WAIT_REQUEST:
671 /* need to catch errors */
672 c->poll_entry = poll_entry;
673 poll_entry->fd = fd;
674 poll_entry->events = POLLIN;/* Maybe this will work */
675 poll_entry++;
676 break;
677 default:
678 c->poll_entry = NULL;
679 break;
680 }
681 c = c->next;
682 }
683
684 /* wait for an event on one connection. We poll at least every
685 second to handle timeouts */
686 do {
687 ret = poll(poll_table, poll_entry - poll_table, delay);
688 if (ret < 0 && ff_neterrno() != FF_NETERROR(EAGAIN) &&
689 ff_neterrno() != FF_NETERROR(EINTR))
690 return -1;
691 } while (ret < 0);
692
693 cur_time = av_gettime() / 1000;
694
695 if (need_to_start_children) {
696 need_to_start_children = 0;
697 start_children(first_feed);
698 }
699
700 /* now handle the events */
701 for(c = first_http_ctx; c != NULL; c = c_next) {
702 c_next = c->next;
703 if (handle_connection(c) < 0) {
704 /* close and free the connection */
705 log_connection(c);
706 close_connection(c);
707 }
708 }
709
710 poll_entry = poll_table;
711 if (server_fd) {
712 /* new HTTP connection request ? */
713 if (poll_entry->revents & POLLIN)
714 new_connection(server_fd, 0);
715 poll_entry++;
716 }
717 if (rtsp_server_fd) {
718 /* new RTSP connection request ? */
719 if (poll_entry->revents & POLLIN)
720 new_connection(rtsp_server_fd, 1);
721 }
722 }
723 }
724
725 /* start waiting for a new HTTP/RTSP request */
726 static void start_wait_request(HTTPContext *c, int is_rtsp)
727 {
728 c->buffer_ptr = c->buffer;
729 c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
730
731 if (is_rtsp) {
732 c->timeout = cur_time + RTSP_REQUEST_TIMEOUT;
733 c->state = RTSPSTATE_WAIT_REQUEST;
734 } else {
735 c->timeout = cur_time + HTTP_REQUEST_TIMEOUT;
736 c->state = HTTPSTATE_WAIT_REQUEST;
737 }
738 }
739
740 static void http_send_too_busy_reply(int fd)
741 {
742 char buffer[300];
743 int len = snprintf(buffer, sizeof(buffer),
744 "HTTP/1.0 503 Server too busy\r\n"
745 "Content-type: text/html\r\n"
746 "\r\n"
747 "<html><head><title>Too busy</title></head><body>\r\n"
748 "<p>The server is too busy to serve your request at this time.</p>\r\n"
749 "<p>The number of current connections is %d, and this exceeds the limit of %d.</p>\r\n"
750 "</body></html>\r\n",
751 nb_connections, nb_max_connections);
752 send(fd, buffer, len, 0);
753 }
754
755
756 static void new_connection(int server_fd, int is_rtsp)
757 {
758 struct sockaddr_in from_addr;
759 int fd, len;
760 HTTPContext *c = NULL;
761
762 len = sizeof(from_addr);
763 fd = accept(server_fd, (struct sockaddr *)&from_addr,
764 &len);
765 if (fd < 0) {
766 http_log("error during accept %s\n", strerror(errno));
767 return;
768 }
769 ff_socket_nonblock(fd, 1);
770
771 if (nb_connections >= nb_max_connections) {
772 http_send_too_busy_reply(fd);
773 goto fail;
774 }
775
776 /* add a new connection */
777 c = av_mallocz(sizeof(HTTPContext));
778 if (!c)
779 goto fail;
780
781 c->fd = fd;
782 c->poll_entry = NULL;
783 c->from_addr = from_addr;
784 c->buffer_size = IOBUFFER_INIT_SIZE;
785 c->buffer = av_malloc(c->buffer_size);
786 if (!c->buffer)
787 goto fail;
788
789 c->next = first_http_ctx;
790 first_http_ctx = c;
791 nb_connections++;
792
793 start_wait_request(c, is_rtsp);
794
795 return;
796
797 fail:
798 if (c) {
799 av_free(c->buffer);
800 av_free(c);
801 }
802 closesocket(fd);
803 }
804
805 static void close_connection(HTTPContext *c)
806 {
807 HTTPContext **cp, *c1;
808 int i, nb_streams;
809 AVFormatContext *ctx;
810 URLContext *h;
811 AVStream *st;
812
813 /* remove connection from list */
814 cp = &first_http_ctx;
815 while ((*cp) != NULL) {
816 c1 = *cp;
817 if (c1 == c)
818 *cp = c->next;
819 else
820 cp = &c1->next;
821 }
822
823 /* remove references, if any (XXX: do it faster) */
824 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
825 if (c1->rtsp_c == c)
826 c1->rtsp_c = NULL;
827 }
828
829 /* remove connection associated resources */
830 if (c->fd >= 0)
831 closesocket(c->fd);
832 if (c->fmt_in) {
833 /* close each frame parser */
834 for(i=0;i<c->fmt_in->nb_streams;i++) {
835 st = c->fmt_in->streams[i];
836 if (st->codec->codec)
837 avcodec_close(st->codec);
838 }
839 av_close_input_file(c->fmt_in);
840 }
841
842 /* free RTP output streams if any */
843 nb_streams = 0;
844 if (c->stream)
845 nb_streams = c->stream->nb_streams;
846
847 for(i=0;i<nb_streams;i++) {
848 ctx = c->rtp_ctx[i];
849 if (ctx) {
850 av_write_trailer(ctx);
851 av_metadata_free(&ctx->metadata);
852 av_free(ctx->streams[0]);
853 av_free(ctx);
854 }
855 h = c->rtp_handles[i];
856 if (h)
857 url_close(h);
858 }
859
860 ctx = &c->fmt_ctx;
861
862 if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) {
863 if (ctx->oformat) {
864 /* prepare header */
865 if (url_open_dyn_buf(&ctx->pb) >= 0) {
866 av_write_trailer(ctx);
867 av_freep(&c->pb_buffer);
868 url_close_dyn_buf(ctx->pb, &c->pb_buffer);
869 }
870 }
871 }
872
873 for(i=0; i<ctx->nb_streams; i++)
874 av_free(ctx->streams[i]);
875
876 if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
877 current_bandwidth -= c->stream->bandwidth;
878
879 /* signal that there is no feed if we are the feeder socket */
880 if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
881 c->stream->feed_opened = 0;
882 close(c->feed_fd);
883 }
884
885 av_freep(&c->pb_buffer);
886 av_freep(&c->packet_buffer);
887 av_free(c->buffer);
888 av_free(c);
889 nb_connections--;
890 }
891
892 static int handle_connection(HTTPContext *c)
893 {
894 int len, ret;
895
896 switch(c->state) {
897 case HTTPSTATE_WAIT_REQUEST:
898 case RTSPSTATE_WAIT_REQUEST:
899 /* timeout ? */
900 if ((c->timeout - cur_time) < 0)
901 return -1;
902 if (c->poll_entry->revents & (POLLERR | POLLHUP))
903 return -1;
904
905 /* no need to read if no events */
906 if (!(c->poll_entry->revents & POLLIN))
907 return 0;
908 /* read the data */
909 read_loop:
910 len = recv(c->fd, c->buffer_ptr, 1, 0);
911 if (len < 0) {
912 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
913 ff_neterrno() != FF_NETERROR(EINTR))
914 return -1;
915 } else if (len == 0) {
916 return -1;
917 } else {
918 /* search for end of request. */
919 uint8_t *ptr;
920 c->buffer_ptr += len;
921 ptr = c->buffer_ptr;
922 if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
923 (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
924 /* request found : parse it and reply */
925 if (c->state == HTTPSTATE_WAIT_REQUEST) {
926 ret = http_parse_request(c);
927 } else {
928 ret = rtsp_parse_request(c);
929 }
930 if (ret < 0)
931 return -1;
932 } else if (ptr >= c->buffer_end) {
933 /* request too long: cannot do anything */
934 return -1;
935 } else goto read_loop;
936 }
937 break;
938
939 case HTTPSTATE_SEND_HEADER:
940 if (c->poll_entry->revents & (POLLERR | POLLHUP))
941 return -1;
942
943 /* no need to write if no events */
944 if (!(c->poll_entry->revents & POLLOUT))
945 return 0;
946 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
947 if (len < 0) {
948 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
949 ff_neterrno() != FF_NETERROR(EINTR)) {
950 /* error : close connection */
951 av_freep(&c->pb_buffer);
952 return -1;
953 }
954 } else {
955 c->buffer_ptr += len;
956 if (c->stream)
957 c->stream->bytes_served += len;
958 c->data_count += len;
959 if (c->buffer_ptr >= c->buffer_end) {
960 av_freep(&c->pb_buffer);
961 /* if error, exit */
962 if (c->http_error)
963 return -1;
964 /* all the buffer was sent : synchronize to the incoming stream */
965 c->state = HTTPSTATE_SEND_DATA_HEADER;
966 c->buffer_ptr = c->buffer_end = c->buffer;
967 }
968 }
969 break;
970
971 case HTTPSTATE_SEND_DATA:
972 case HTTPSTATE_SEND_DATA_HEADER:
973 case HTTPSTATE_SEND_DATA_TRAILER:
974 /* for packetized output, we consider we can always write (the
975 input streams sets the speed). It may be better to verify
976 that we do not rely too much on the kernel queues */
977 if (!c->is_packetized) {
978 if (c->poll_entry->revents & (POLLERR | POLLHUP))
979 return -1;
980
981 /* no need to read if no events */
982 if (!(c->poll_entry->revents & POLLOUT))
983 return 0;
984 }
985 if (http_send_data(c) < 0)
986 return -1;
987 /* close connection if trailer sent */
988 if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
989 return -1;
990 break;
991 case HTTPSTATE_RECEIVE_DATA:
992 /* no need to read if no events */
993 if (c->poll_entry->revents & (POLLERR | POLLHUP))
994 return -1;
995 if (!(c->poll_entry->revents & POLLIN))
996 return 0;
997 if (http_receive_data(c) < 0)
998 return -1;
999 break;
1000 case HTTPSTATE_WAIT_FEED:
1001 /* no need to read if no events */
1002 if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
1003 return -1;
1004
1005 /* nothing to do, we'll be waken up by incoming feed packets */
1006 break;
1007
1008 case RTSPSTATE_SEND_REPLY:
1009 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1010 av_freep(&c->pb_buffer);
1011 return -1;
1012 }
1013 /* no need to write if no events */
1014 if (!(c->poll_entry->revents & POLLOUT))
1015 return 0;
1016 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
1017 if (len < 0) {
1018 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
1019 ff_neterrno() != FF_NETERROR(EINTR)) {
1020 /* error : close connection */
1021 av_freep(&c->pb_buffer);
1022 return -1;
1023 }
1024 } else {
1025 c->buffer_ptr += len;
1026 c->data_count += len;
1027 if (c->buffer_ptr >= c->buffer_end) {
1028 /* all the buffer was sent : wait for a new request */
1029 av_freep(&c->pb_buffer);
1030 start_wait_request(c, 1);
1031 }
1032 }
1033 break;
1034 case RTSPSTATE_SEND_PACKET:
1035 if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1036 av_freep(&c->packet_buffer);
1037 return -1;
1038 }
1039 /* no need to write if no events */
1040 if (!(c->poll_entry->revents & POLLOUT))
1041 return 0;
1042 len = send(c->fd, c->packet_buffer_ptr,
1043 c->packet_buffer_end - c->packet_buffer_ptr, 0);
1044 if (len < 0) {
1045 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
1046 ff_neterrno() != FF_NETERROR(EINTR)) {
1047 /* error : close connection */
1048 av_freep(&c->packet_buffer);
1049 return -1;
1050 }
1051 } else {
1052 c->packet_buffer_ptr += len;
1053 if (c->packet_buffer_ptr >= c->packet_buffer_end) {
1054 /* all the buffer was sent : wait for a new request */
1055 av_freep(&c->packet_buffer);
1056 c->state = RTSPSTATE_WAIT_REQUEST;
1057 }
1058 }
1059 break;
1060 case HTTPSTATE_READY:
1061 /* nothing to do */
1062 break;
1063 default:
1064 return -1;
1065 }
1066 return 0;
1067 }
1068
1069 static int extract_rates(char *rates, int ratelen, const char *request)
1070 {
1071 const char *p;
1072
1073 for (p = request; *p && *p != '\r' && *p != '\n'; ) {
1074 if (strncasecmp(p, "Pragma:", 7) == 0) {
1075 const char *q = p + 7;
1076
1077 while (*q && *q != '\n' && isspace(*q))
1078 q++;
1079
1080 if (strncasecmp(q, "stream-switch-entry=", 20) == 0) {
1081 int stream_no;
1082 int rate_no;
1083
1084 q += 20;
1085
1086 memset(rates, 0xff, ratelen);
1087
1088 while (1) {
1089 while (*q && *q != '\n' && *q != ':')
1090 q++;
1091
1092 if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
1093 break;
1094
1095 stream_no--;
1096 if (stream_no < ratelen && stream_no >= 0)
1097 rates[stream_no] = rate_no;
1098
1099 while (*q && *q != '\n' && !isspace(*q))
1100 q++;
1101 }
1102
1103 return 1;
1104 }
1105 }
1106 p = strchr(p, '\n');
1107 if (!p)
1108 break;
1109
1110 p++;
1111 }
1112
1113 return 0;
1114 }
1115
1116 static int find_stream_in_feed(FFStream *feed, AVCodecContext *codec, int bit_rate)
1117 {
1118 int i;
1119 int best_bitrate = 100000000;
1120 int best = -1;
1121
1122 for (i = 0; i < feed->nb_streams; i++) {
1123 AVCodecContext *feed_codec = feed->streams[i]->codec;
1124
1125 if (feed_codec->codec_id != codec->codec_id ||
1126 feed_codec->sample_rate != codec->sample_rate ||
1127 feed_codec->width != codec->width ||
1128 feed_codec->height != codec->height)
1129 continue;
1130
1131 /* Potential stream */
1132
1133 /* We want the fastest stream less than bit_rate, or the slowest
1134 * faster than bit_rate
1135 */
1136
1137 if (feed_codec->bit_rate <= bit_rate) {
1138 if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) {
1139 best_bitrate = feed_codec->bit_rate;
1140 best = i;
1141 }
1142 } else {
1143 if (feed_codec->bit_rate < best_bitrate) {
1144 best_bitrate = feed_codec->bit_rate;
1145 best = i;
1146 }
1147 }
1148 }
1149
1150 return best;
1151 }
1152
1153 static int modify_current_stream(HTTPContext *c, char *rates)
1154 {
1155 int i;
1156 FFStream *req = c->stream;
1157 int action_required = 0;
1158
1159 /* Not much we can do for a feed */
1160 if (!req->feed)
1161 return 0;
1162
1163 for (i = 0; i < req->nb_streams; i++) {
1164 AVCodecContext *codec = req->streams[i]->codec;
1165
1166 switch(rates[i]) {
1167 case 0:
1168 c->switch_feed_streams[i] = req->feed_streams[i];
1169 break;
1170 case 1:
1171 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
1172 break;
1173 case 2:
1174 /* Wants off or slow */
1175 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
1176 #ifdef WANTS_OFF
1177 /* This doesn't work well when it turns off the only stream! */
1178 c->switch_feed_streams[i] = -2;
1179 c->feed_streams[i] = -2;
1180 #endif
1181 break;
1182 }
1183
1184 if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i])
1185 action_required = 1;
1186 }
1187
1188 return action_required;
1189 }
1190
1191
1192 static void do_switch_stream(HTTPContext *c, int i)
1193 {
1194 if (c->switch_feed_streams[i] >= 0) {
1195 #ifdef PHILIP
1196 c->feed_streams[i] = c->switch_feed_streams[i];
1197 #endif
1198
1199 /* Now update the stream */
1200 }
1201 c->switch_feed_streams[i] = -1;
1202 }
1203
1204 /* XXX: factorize in utils.c ? */
1205 /* XXX: take care with different space meaning */
1206 static void skip_spaces(const char **pp)
1207 {
1208 const char *p;
1209 p = *pp;
1210 while (*p == ' ' || *p == '\t')
1211 p++;
1212 *pp = p;
1213 }
1214
1215 static void get_word(char *buf, int buf_size, const char **pp)
1216 {
1217 const char *p;
1218 char *q;
1219
1220 p = *pp;
1221 skip_spaces(&p);
1222 q = buf;
1223 while (!isspace(*p) && *p != '\0') {
1224 if ((q - buf) < buf_size - 1)
1225 *q++ = *p;
1226 p++;
1227 }
1228 if (buf_size > 0)
1229 *q = '\0';
1230 *pp = p;
1231 }
1232
1233 static void get_arg(char *buf, int buf_size, const char **pp)
1234 {
1235 const char *p;
1236 char *q;
1237 int quote;
1238
1239 p = *pp;
1240 while (isspace(*p)) p++;
1241 q = buf;
1242 quote = 0;
1243 if (*p == '\"' || *p == '\'')
1244 quote = *p++;
1245 for(;;) {
1246 if (quote) {
1247 if (*p == quote)
1248 break;
1249 } else {
1250 if (isspace(*p))
1251 break;
1252 }
1253 if (*p == '\0')
1254 break;
1255 if ((q - buf) < buf_size - 1)
1256 *q++ = *p;
1257 p++;
1258 }
1259 *q = '\0';
1260 if (quote && *p == quote)
1261 p++;
1262 *pp = p;
1263 }
1264
1265 static void parse_acl_row(FFStream *stream, FFStream* feed, IPAddressACL *ext_acl,
1266 const char *p, const char *filename, int line_num)
1267 {
1268 char arg[1024];
1269 IPAddressACL acl;
1270 int errors = 0;
1271
1272 get_arg(arg, sizeof(arg), &p);
1273 if (strcasecmp(arg, "allow") == 0)
1274 acl.action = IP_ALLOW;
1275 else if (strcasecmp(arg, "deny") == 0)
1276 acl.action = IP_DENY;
1277 else {
1278 fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
1279 filename, line_num, arg);
1280 errors++;
1281 }
1282
1283 get_arg(arg, sizeof(arg), &p);
1284
1285 if (resolve_host(&acl.first, arg) != 0) {
1286 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1287 filename, line_num, arg);
1288 errors++;
1289 } else
1290 acl.last = acl.first;
1291
1292 get_arg(arg, sizeof(arg), &p);
1293
1294 if (arg[0]) {
1295 if (resolve_host(&acl.last, arg) != 0) {
1296 fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1297 filename, line_num, arg);
1298 errors++;
1299 }
1300 }
1301
1302 if (!errors) {
1303 IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
1304 IPAddressACL **naclp = 0;
1305
1306 acl.next = 0;
1307 *nacl = acl;
1308
1309 if (stream)
1310 naclp = &stream->acl;
1311 else if (feed)
1312 naclp = &feed->acl;
1313 else if (ext_acl)
1314 naclp = &ext_acl;
1315 else {
1316 fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
1317 filename, line_num);
1318 errors++;
1319 }
1320
1321 if (naclp) {
1322 while (*naclp)
1323 naclp = &(*naclp)->next;
1324
1325 *naclp = nacl;
1326 }
1327 }
1328 }
1329
1330
1331 static IPAddressACL* parse_dynamic_acl(FFStream *stream, HTTPContext *c)
1332 {
1333 FILE* f;
1334 char line[1024];
1335 char cmd[1024];
1336 IPAddressACL *acl = NULL;
1337 int line_num = 0;
1338 const char *p;
1339
1340 f = fopen(stream->dynamic_acl, "r");
1341 if (!f) {
1342 perror(stream->dynamic_acl);
1343 return NULL;
1344 }
1345
1346 acl = av_mallocz(sizeof(IPAddressACL));
1347
1348 /* Build ACL */
1349 for(;;) {
1350 if (fgets(line, sizeof(line), f) == NULL)
1351 break;
1352 line_num++;
1353 p = line;
1354 while (isspace(*p))
1355 p++;
1356 if (*p == '\0' || *p == '#')
1357 continue;
1358 get_arg(cmd, sizeof(cmd), &p);
1359
1360 if (!strcasecmp(cmd, "ACL"))
1361 parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num);
1362 }
1363 fclose(f);
1364 return acl;
1365 }
1366
1367
1368 static void free_acl_list(IPAddressACL *in_acl)
1369 {
1370 IPAddressACL *pacl,*pacl2;
1371
1372 pacl = in_acl;
1373 while(pacl) {
1374 pacl2 = pacl;
1375 pacl = pacl->next;
1376 av_freep(pacl2);
1377 }
1378 }
1379
1380 static int validate_acl_list(IPAddressACL *in_acl, HTTPContext *c)
1381 {
1382 enum IPAddressAction last_action = IP_DENY;
1383 IPAddressACL *acl;
1384 struct in_addr *src = &c->from_addr.sin_addr;
1385 unsigned long src_addr = src->s_addr;
1386
1387 for (acl = in_acl; acl; acl = acl->next) {
1388 if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
1389 return (acl->action == IP_ALLOW) ? 1 : 0;
1390 last_action = acl->action;
1391 }
1392
1393 /* Nothing matched, so return not the last action */
1394 return (last_action == IP_DENY) ? 1 : 0;
1395 }
1396
1397 static int validate_acl(FFStream *stream, HTTPContext *c)
1398 {
1399 int ret = 0;
1400 IPAddressACL *acl;
1401
1402
1403 /* if stream->acl is null validate_acl_list will return 1 */
1404 ret = validate_acl_list(stream->acl, c);
1405
1406 if (stream->dynamic_acl[0]) {
1407 acl = parse_dynamic_acl(stream, c);
1408
1409 ret = validate_acl_list(acl, c);
1410
1411 free_acl_list(acl);
1412 }
1413
1414 return ret;
1415 }
1416
1417 /* compute the real filename of a file by matching it without its
1418 extensions to all the stream filenames */
1419 static void compute_real_filename(char *filename, int max_size)
1420 {
1421 char file1[1024];
1422 char file2[1024];
1423 char *p;
1424 FFStream *stream;
1425
1426 /* compute filename by matching without the file extensions */
1427 av_strlcpy(file1, filename, sizeof(file1));
1428 p = strrchr(file1, '.');
1429 if (p)
1430 *p = '\0';
1431 for(stream = first_stream; stream != NULL; stream = stream->next) {
1432 av_strlcpy(file2, stream->filename, sizeof(file2));
1433 p = strrchr(file2, '.');
1434 if (p)
1435 *p = '\0';
1436 if (!strcmp(file1, file2)) {
1437 av_strlcpy(filename, stream->filename, max_size);
1438 break;
1439 }
1440 }
1441 }
1442
1443 enum RedirType {
1444 REDIR_NONE,
1445 REDIR_ASX,
1446 REDIR_RAM,
1447 REDIR_ASF,
1448 REDIR_RTSP,
1449 REDIR_SDP,
1450 };
1451
1452 /* parse http request and prepare header */
1453 static int http_parse_request(HTTPContext *c)
1454 {
1455 char *p;
1456 enum RedirType redir_type;
1457 char cmd[32];
1458 char info[1024], filename[1024];
1459 char url[1024], *q;
1460 char protocol[32];
1461 char msg[1024];
1462 const char *mime_type;
1463 FFStream *stream;
1464 int i;
1465 char ratebuf[32];
1466 char *useragent = 0;
1467
1468 p = c->buffer;
1469 get_word(cmd, sizeof(cmd), (const char **)&p);
1470 av_strlcpy(c->method, cmd, sizeof(c->method));
1471
1472 if (!strcmp(cmd, "GET"))
1473 c->post = 0;
1474 else if (!strcmp(cmd, "POST"))
1475 c->post = 1;
1476 else
1477 return -1;
1478
1479 get_word(url, sizeof(url), (const char **)&p);
1480 av_strlcpy(c->url, url, sizeof(c->url));
1481
1482 get_word(protocol, sizeof(protocol), (const char **)&p);
1483 if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
1484 return -1;
1485
1486 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
1487
1488 if (ffserver_debug)
1489 http_log("%s - - New connection: %s %s\n", inet_ntoa(c->from_addr.sin_addr), cmd, url);
1490
1491 /* find the filename and the optional info string in the request */
1492 p = strchr(url, '?');
1493 if (p) {
1494 av_strlcpy(info, p, sizeof(info));
1495 *p = '\0';
1496 } else
1497 info[0] = '\0';
1498
1499 av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
1500
1501 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1502 if (strncasecmp(p, "User-Agent:", 11) == 0) {
1503 useragent = p + 11;
1504 if (*useragent && *useragent != '\n' && isspace(*useragent))
1505 useragent++;
1506 break;
1507 }
1508 p = strchr(p, '\n');
1509 if (!p)
1510 break;
1511
1512 p++;
1513 }
1514
1515 redir_type = REDIR_NONE;
1516 if (av_match_ext(filename, "asx")) {
1517 redir_type = REDIR_ASX;
1518 filename[strlen(filename)-1] = 'f';
1519 } else if (av_match_ext(filename, "asf") &&
1520 (!useragent || strncasecmp(useragent, "NSPlayer", 8) != 0)) {
1521 /* if this isn't WMP or lookalike, return the redirector file */
1522 redir_type = REDIR_ASF;
1523 } else if (av_match_ext(filename, "rpm,ram")) {
1524 redir_type = REDIR_RAM;
1525 strcpy(filename + strlen(filename)-2, "m");
1526 } else if (av_match_ext(filename, "rtsp")) {
1527 redir_type = REDIR_RTSP;
1528 compute_real_filename(filename, sizeof(filename) - 1);
1529 } else if (av_match_ext(filename, "sdp")) {
1530 redir_type = REDIR_SDP;
1531 compute_real_filename(filename, sizeof(filename) - 1);
1532 }
1533
1534 // "redirect" / request to index.html
1535 if (!strlen(filename))
1536 av_strlcpy(filename, "index.html", sizeof(filename) - 1);
1537
1538 stream = first_stream;
1539 while (stream != NULL) {
1540 if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
1541 break;
1542 stream = stream->next;
1543 }
1544 if (stream == NULL) {
1545 snprintf(msg, sizeof(msg), "File '%s' not found", url);
1546 http_log("File '%s' not found\n", url);
1547 goto send_error;
1548 }
1549
1550 c->stream = stream;
1551 memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
1552 memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
1553
1554 if (stream->stream_type == STREAM_TYPE_REDIRECT) {
1555 c->http_error = 301;
1556 q = c->buffer;
1557 q += snprintf(q, c->buffer_size,
1558 "HTTP/1.0 301 Moved\r\n"
1559 "Location: %s\r\n"
1560 "Content-type: text/html\r\n"
1561 "\r\n"
1562 "<html><head><title>Moved</title></head><body>\r\n"
1563 "You should be <a href=\"%s\">redirected</a>.\r\n"
1564 "</body></html>\r\n", stream->feed_filename, stream->feed_filename);
1565 /* prepare output buffer */
1566 c->buffer_ptr = c->buffer;
1567 c->buffer_end = q;
1568 c->state = HTTPSTATE_SEND_HEADER;
1569 return 0;
1570 }
1571
1572 /* If this is WMP, get the rate information */
1573 if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1574 if (modify_current_stream(c, ratebuf)) {
1575 for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) {
1576 if (c->switch_feed_streams[i] >= 0)
1577 do_switch_stream(c, i);
1578 }
1579 }
1580 }
1581
1582 if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
1583 current_bandwidth += stream->bandwidth;
1584
1585 /* If already streaming this feed, do not let start another feeder. */
1586 if (stream->feed_opened) {
1587 snprintf(msg, sizeof(msg), "This feed is already being received.");
1588 http_log("Feed '%s' already being received\n", stream->feed_filename);
1589 goto send_error;
1590 }
1591
1592 if (c->post == 0 && max_bandwidth < current_bandwidth) {
1593 c->http_error = 503;
1594 q = c->buffer;
1595 q += snprintf(q, c->buffer_size,
1596 "HTTP/1.0 503 Server too busy\r\n"
1597 "Content-type: text/html\r\n"
1598 "\r\n"
1599 "<html><head><title>Too busy</title></head><body>\r\n"
1600 "<p>The server is too busy to serve your request at this time.</p>\r\n"
1601 "<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, "
1602 "and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n"
1603 "</body></html>\r\n", current_bandwidth, max_bandwidth);
1604 /* prepare output buffer */
1605 c->buffer_ptr = c->buffer;
1606 c->buffer_end = q;
1607 c->state = HTTPSTATE_SEND_HEADER;
1608 return 0;
1609 }
1610
1611 if (redir_type != REDIR_NONE) {
1612 char *hostinfo = 0;
1613
1614 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1615 if (strncasecmp(p, "Host:", 5) == 0) {
1616 hostinfo = p + 5;
1617 break;
1618 }
1619 p = strchr(p, '\n');
1620 if (!p)
1621 break;
1622
1623 p++;
1624 }
1625
1626 if (hostinfo) {
1627 char *eoh;
1628 char hostbuf[260];
1629
1630 while (isspace(*hostinfo))
1631 hostinfo++;
1632
1633 eoh = strchr(hostinfo, '\n');
1634 if (eoh) {
1635 if (eoh[-1] == '\r')
1636 eoh--;
1637
1638 if (eoh - hostinfo < sizeof(hostbuf) - 1) {
1639 memcpy(hostbuf, hostinfo, eoh - hostinfo);
1640 hostbuf[eoh - hostinfo] = 0;
1641
1642 c->http_error = 200;
1643 q = c->buffer;
1644 switch(redir_type) {
1645 case REDIR_ASX:
1646 q += snprintf(q, c->buffer_size,
1647 "HTTP/1.0 200 ASX Follows\r\n"
1648 "Content-type: video/x-ms-asf\r\n"
1649 "\r\n"
1650 "<ASX Version=\"3\">\r\n"
1651 //"<!-- Autogenerated by ffserver -->\r\n"
1652 "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n"
1653 "</ASX>\r\n", hostbuf, filename, info);
1654 break;
1655 case REDIR_RAM:
1656 q += snprintf(q, c->buffer_size,
1657 "HTTP/1.0 200 RAM Follows\r\n"
1658 "Content-type: audio/x-pn-realaudio\r\n"
1659 "\r\n"
1660 "# Autogenerated by ffserver\r\n"
1661 "http://%s/%s%s\r\n", hostbuf, filename, info);
1662 break;
1663 case REDIR_ASF:
1664 q += snprintf(q, c->buffer_size,
1665 "HTTP/1.0 200 ASF Redirect follows\r\n"
1666 "Content-type: video/x-ms-asf\r\n"
1667 "\r\n"
1668 "[Reference]\r\n"
1669 "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info);
1670 break;
1671 case REDIR_RTSP:
1672 {
1673 char hostname[256], *p;
1674 /* extract only hostname */
1675 av_strlcpy(hostname, hostbuf, sizeof(hostname));
1676 p = strrchr(hostname, ':');
1677 if (p)
1678 *p = '\0';
1679 q += snprintf(q, c->buffer_size,
1680 "HTTP/1.0 200 RTSP Redirect follows\r\n"
1681 /* XXX: incorrect mime type ? */
1682 "Content-type: application/x-rtsp\r\n"
1683 "\r\n"
1684 "rtsp://%s:%d/%s\r\n", hostname, ntohs(my_rtsp_addr.sin_port), filename);
1685 }
1686 break;
1687 case REDIR_SDP:
1688 {
1689 uint8_t *sdp_data;
1690 int sdp_data_size, len;
1691 struct sockaddr_in my_addr;
1692
1693 q += snprintf(q, c->buffer_size,
1694 "HTTP/1.0 200 OK\r\n"
1695 "Content-type: application/sdp\r\n"
1696 "\r\n");
1697
1698 len = sizeof(my_addr);
1699 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
1700
1701 /* XXX: should use a dynamic buffer */
1702 sdp_data_size = prepare_sdp_description(stream,
1703 &sdp_data,
1704 my_addr.sin_addr);
1705 if (sdp_data_size > 0) {
1706 memcpy(q, sdp_data, sdp_data_size);
1707 q += sdp_data_size;
1708 *q = '\0';
1709 av_free(sdp_data);
1710 }
1711 }
1712 break;
1713 default:
1714 abort();
1715 break;
1716 }
1717
1718 /* prepare output buffer */
1719 c->buffer_ptr = c->buffer;
1720 c->buffer_end = q;
1721 c->state = HTTPSTATE_SEND_HEADER;
1722 return 0;
1723 }
1724 }
1725 }
1726
1727 snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
1728 goto send_error;
1729 }
1730
1731 stream->conns_served++;
1732
1733 /* XXX: add there authenticate and IP match */
1734
1735 if (c->post) {
1736 /* if post, it means a feed is being sent */
1737 if (!stream->is_feed) {
1738 /* However it might be a status report from WMP! Let us log the
1739 * data as it might come in handy one day. */
1740 char *logline = 0;
1741 int client_id = 0;
1742
1743 for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1744 if (strncasecmp(p, "Pragma: log-line=", 17) == 0) {
1745 logline = p;
1746 break;
1747 }
1748 if (strncasecmp(p, "Pragma: client-id=", 18) == 0)
1749 client_id = strtol(p + 18, 0, 10);
1750 p = strchr(p, '\n');
1751 if (!p)
1752 break;
1753
1754 p++;
1755 }
1756
1757 if (logline) {
1758 char *eol = strchr(logline, '\n');
1759
1760 logline += 17;
1761
1762 if (eol) {
1763 if (eol[-1] == '\r')
1764 eol--;
1765 http_log("%.*s\n", (int) (eol - logline), logline);
1766 c->suppress_log = 1;
1767 }
1768 }
1769
1770 #ifdef DEBUG_WMP
1771 http_log("\nGot request:\n%s\n", c->buffer);
1772 #endif
1773
1774 if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1775 HTTPContext *wmpc;
1776
1777 /* Now we have to find the client_id */
1778 for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
1779 if (wmpc->wmp_client_id == client_id)
1780 break;
1781 }
1782
1783 if (wmpc && modify_current_stream(wmpc, ratebuf))
1784 wmpc->switch_pending = 1;
1785 }
1786
1787 snprintf(msg, sizeof(msg), "POST command not handled");
1788 c->stream = 0;
1789 goto send_error;
1790 }
1791 if (http_start_receive_data(c) < 0) {
1792 snprintf(msg, sizeof(msg), "could not open feed");
1793 goto send_error;
1794 }
1795 c->http_error = 0;
1796 c->state = HTTPSTATE_RECEIVE_DATA;
1797 return 0;
1798 }
1799
1800 #ifdef DEBUG_WMP
1801 if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
1802 http_log("\nGot request:\n%s\n", c->buffer);
1803 #endif
1804
1805 if (c->stream->stream_type == STREAM_TYPE_STATUS)
1806 goto send_status;
1807
1808 /* open input stream */
1809 if (open_input_stream(c, info) < 0) {
1810 snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
1811 goto send_error;
1812 }
1813
1814 /* prepare http header */
1815 q = c->buffer;
1816 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 OK\r\n");
1817 mime_type = c->stream->fmt->mime_type;
1818 if (!mime_type)
1819 mime_type = "application/x-octet-stream";
1820 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Pragma: no-cache\r\n");
1821
1822 /* for asf, we need extra headers */
1823 if (!strcmp(c->stream->fmt->name,"asf_stream")) {
1824 /* Need to allocate a client id */
1825
1826 c->wmp_client_id = av_lfg_get(&random_state);
1827
1828 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);
1829 }
1830 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-Type: %s\r\n", mime_type);
1831 q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1832
1833 /* prepare output buffer */
1834 c->http_error = 0;
1835 c->buffer_ptr = c->buffer;
1836 c->buffer_end = q;
1837 c->state = HTTPSTATE_SEND_HEADER;
1838 return 0;
1839 send_error:
1840 c->http_error = 404;
1841 q = c->buffer;
1842 q += snprintf(q, c->buffer_size,
1843 "HTTP/1.0 404 Not Found\r\n"
1844 "Content-type: text/html\r\n"
1845 "\r\n"
1846 "<html>\n"
1847 "<head><title>404 Not Found</title></head>\n"
1848 "<body>%s</body>\n"
1849 "</html>\n", msg);
1850 /* prepare output buffer */
1851 c->buffer_ptr = c->buffer;
1852 c->buffer_end = q;
1853 c->state = HTTPSTATE_SEND_HEADER;
1854 return 0;
1855 send_status:
1856 compute_status(c);
1857 c->http_error = 200; /* horrible : we use this value to avoid
1858 going to the send data state */
1859 c->state = HTTPSTATE_SEND_HEADER;
1860 return 0;
1861 }
1862
1863 static void fmt_bytecount(ByteIOContext *pb, int64_t count)
1864 {
1865 static const char *suffix = " kMGTP";
1866 const char *s;
1867
1868 for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
1869
1870 url_fprintf(pb, "%"PRId64"%c", count, *s);
1871 }
1872
1873 static void compute_status(HTTPContext *c)
1874 {
1875 HTTPContext *c1;
1876 FFStream *stream;
1877 char *p;
1878 time_t ti;
1879 int i, len;
1880 ByteIOContext *pb;
1881
1882 if (url_open_dyn_buf(&pb) < 0) {
1883 /* XXX: return an error ? */
1884 c->buffer_ptr = c->buffer;
1885 c->buffer_end = c->buffer;
1886 return;
1887 }
1888
1889 url_fprintf(pb, "HTTP/1.0 200 OK\r\n");
1890 url_fprintf(pb, "Content-type: %s\r\n", "text/html");
1891 url_fprintf(pb, "Pragma: no-cache\r\n");
1892 url_fprintf(pb, "\r\n");
1893
1894 url_fprintf(pb, "<html><head><title>%s Status</title>\n", program_name);
1895 if (c->stream->feed_filename[0])
1896 url_fprintf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename);
1897 url_fprintf(pb, "</head>\n<body>");
1898 url_fprintf(pb, "<h1>%s Status</h1>\n", program_name);
1899 /* format status */
1900 url_fprintf(pb, "<h2>Available Streams</h2>\n");
1901 url_fprintf(pb, "<table cellspacing=0 cellpadding=4>\n");
1902 url_fprintf(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");
1903 stream = first_stream;
1904 while (stream != NULL) {
1905 char sfilename[1024];
1906 char *eosf;
1907
1908 if (stream->feed != stream) {
1909 av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
1910 eosf = sfilename + strlen(sfilename);
1911 if (eosf - sfilename >= 4) {
1912 if (strcmp(eosf - 4, ".asf") == 0)
1913 strcpy(eosf - 4, ".asx");
1914 else if (strcmp(eosf - 3, ".rm") == 0)
1915 strcpy(eosf - 3, ".ram");
1916 else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
1917 /* generate a sample RTSP director if
1918 unicast. Generate an SDP redirector if
1919 multicast */
1920 eosf = strrchr(sfilename, '.');
1921 if (!eosf)
1922 eosf = sfilename + strlen(sfilename);
1923 if (stream->is_multicast)
1924 strcpy(eosf, ".sdp");
1925 else
1926 strcpy(eosf, ".rtsp");
1927 }
1928 }
1929
1930 url_fprintf(pb, "<tr><td><a href=\"/%s\">%s</a> ",
1931 sfilename, stream->filename);
1932 url_fprintf(pb, "<td align=right> %d <td align=right> ",
1933 stream->conns_served);
1934 fmt_bytecount(pb, stream->bytes_served);
1935 switch(stream->stream_type) {
1936 case STREAM_TYPE_LIVE: {
1937 int audio_bit_rate = 0;
1938 int video_bit_rate = 0;
1939 const char *audio_codec_name = "";
1940 const char *video_codec_name = "";
1941 const char *audio_codec_name_extra = "";
1942 const char *video_codec_name_extra = "";
1943
1944 for(i=0;i<stream->nb_streams;i++) {
1945 AVStream *st = stream->streams[i];
1946 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
1947 switch(st->codec->codec_type) {
1948 case AVMEDIA_TYPE_AUDIO:
1949 audio_bit_rate += st->codec->bit_rate;
1950 if (codec) {
1951 if (*audio_codec_name)
1952 audio_codec_name_extra = "...";
1953 audio_codec_name = codec->name;
1954 }
1955 break;
1956 case AVMEDIA_TYPE_VIDEO:
1957 video_bit_rate += st->codec->bit_rate;
1958 if (codec) {
1959 if (*video_codec_name)
1960 video_codec_name_extra = "...";
1961 video_codec_name = codec->name;
1962 }
1963 break;
1964 case AVMEDIA_TYPE_DATA:
1965 video_bit_rate += st->codec->bit_rate;
1966 break;
1967 default:
1968 abort();
1969 }
1970 }
1971 url_fprintf(pb, "<td align=center> %s <td align=right> %d <td align=right> %d <td> %s %s <td align=right> %d <td> %s %s",
1972 stream->fmt->name,
1973 stream->bandwidth,
1974 video_bit_rate / 1000, video_codec_name, video_codec_name_extra,
1975 audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra);
1976 if (stream->feed)
1977 url_fprintf(pb, "<td>%s", stream->feed->filename);
1978 else
1979 url_fprintf(pb, "<td>%s", stream->feed_filename);
1980 url_fprintf(pb, "\n");
1981 }
1982 break;
1983 default:
1984 url_fprintf(pb, "<td align=center> - <td align=right> - <td align=right> - <td><td align=right> - <td>\n");
1985 break;
1986 }
1987 }
1988 stream = stream->next;
1989 }
1990 url_fprintf(pb, "</table>\n");
1991
1992 stream = first_stream;
1993 while (stream != NULL) {
1994 if (stream->feed == stream) {
1995 url_fprintf(pb, "<h2>Feed %s</h2>", stream->filename);
1996 if (stream->pid) {
1997 url_fprintf(pb, "Running as pid %d.\n", stream->pid);
1998
1999 #if defined(linux) && !defined(CONFIG_NOCUTILS)
2000 {
2001 FILE *pid_stat;
2002 char ps_cmd[64];
2003
2004 /* This is somewhat linux specific I guess */
2005 snprintf(ps_cmd, sizeof(ps_cmd),
2006 "ps -o \"%%cpu,cputime\" --no-headers %d",
2007 stream->pid);
2008
2009 pid_stat = popen(ps_cmd, "r");
2010 if (pid_stat) {
2011 char cpuperc[10];
2012 char cpuused[64];
2013
2014 if (fscanf(pid_stat, "%10s %64s", cpuperc,
2015 cpuused) == 2) {
2016 url_fprintf(pb, "Currently using %s%% of the cpu. Total time used %s.\n",
2017 cpuperc, cpuused);
2018 }
2019 fclose(pid_stat);
2020 }
2021 }
2022 #endif
2023
2024 url_fprintf(pb, "<p>");
2025 }
2026 url_fprintf(pb, "<table cellspacing=0 cellpadding=4><tr><th>Stream<th>type<th>kbits/s<th align=left>codec<th align=left>Parameters\n");
2027
2028 for (i = 0; i < stream->nb_streams; i++) {
2029 AVStream *st = stream->streams[i];
2030 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
2031 const char *type = "unknown";
2032 char parameters[64];
2033
2034 parameters[0] = 0;
2035
2036 switch(st->codec->codec_type) {
2037 case AVMEDIA_TYPE_AUDIO:
2038 type = "audio";
2039 snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate);
2040 break;
2041 case AVMEDIA_TYPE_VIDEO:
2042 type = "video";
2043 snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height,
2044 st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num);
2045 break;
2046 default:
2047 abort();
2048 }
2049 url_fprintf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n",
2050 i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters);
2051 }
2052 url_fprintf(pb, "</table>\n");
2053
2054 }
2055 stream = stream->next;
2056 }
2057
2058 /* connection status */
2059 url_fprintf(pb, "<h2>Connection Status</h2>\n");
2060
2061 url_fprintf(pb, "Number of connections: %d / %d<br>\n",
2062 nb_connections, nb_max_connections);
2063
2064 url_fprintf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n",
2065 current_bandwidth, max_bandwidth);
2066
2067 url_fprintf(pb, "<table>\n");
2068 url_fprintf(pb, "<tr><th>#<th>File<th>IP<th>Proto<th>State<th>Target bits/sec<th>Actual bits/sec<th>Bytes transferred\n");
2069 c1 = first_http_ctx;
2070 i = 0;
2071 while (c1 != NULL) {
2072 int bitrate;
2073 int j;
2074
2075 bitrate = 0;
2076 if (c1->stream) {
2077 for (j = 0; j < c1->stream->nb_streams; j++) {
2078 if (!c1->stream->feed)
2079 bitrate += c1->stream->streams[j]->codec->bit_rate;
2080 else if (c1->feed_streams[j] >= 0)
2081 bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate;
2082 }
2083 }
2084
2085 i++;
2086 p = inet_ntoa(c1->from_addr.sin_addr);
2087 url_fprintf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td align=right>",
2088 i,
2089 c1->stream ? c1->stream->filename : "",
2090 c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
2091 p,
2092 c1->protocol,
2093 http_state[c1->state]);
2094 fmt_bytecount(pb, bitrate);
2095 url_fprintf(pb, "<td align=right>");
2096 fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
2097 url_fprintf(pb, "<td align=right>");
2098 fmt_bytecount(pb, c1->data_count);
2099 url_fprintf(pb, "\n");
2100 c1 = c1->next;
2101 }
2102 url_fprintf(pb, "</table>\n");
2103
2104 /* date */
2105 ti = time(NULL);
2106 p = ctime(&ti);
2107 url_fprintf(pb, "<hr size=1 noshade>Generated at %s", p);
2108 url_fprintf(pb, "</body>\n</html>\n");
2109
2110 len = url_close_dyn_buf(pb, &c->pb_buffer);
2111 c->buffer_ptr = c->pb_buffer;
2112 c->buffer_end = c->pb_buffer + len;
2113 }
2114
2115 /* check if the parser needs to be opened for stream i */
2116 static void open_parser(AVFormatContext *s, int i)
2117 {
2118 AVStream *st = s->streams[i];
2119 AVCodec *codec;
2120
2121 if (!st->codec->codec) {
2122 codec = avcodec_find_decoder(st->codec->codec_id);
2123 if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
2124 st->codec->parse_only = 1;
2125 if (avcodec_open(st->codec, codec) < 0)
2126 st->codec->parse_only = 0;
2127 }
2128 }
2129 }
2130
2131 static int open_input_stream(HTTPContext *c, const char *info)
2132 {
2133 char buf[128];
2134 char input_filename[1024];
2135 AVFormatContext *s;
2136 int buf_size, i, ret;
2137 int64_t stream_pos;
2138
2139 /* find file name */
2140 if (c->stream->feed) {
2141 strcpy(input_filename, c->stream->feed->feed_filename);
2142 buf_size = FFM_PACKET_SIZE;
2143 /* compute position (absolute time) */
2144 if (find_info_tag(buf, sizeof(buf), "date", info)) {
2145 stream_pos = parse_date(buf, 0);
2146 if (stream_pos == INT64_MIN)
2147 return -1;
2148 } else if (find_info_tag(buf, sizeof(buf), "buffer", info)) {
2149 int prebuffer = strtol(buf, 0, 10);
2150 stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
2151 } else
2152 stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
2153 } else {
2154 strcpy(input_filename, c->stream->feed_filename);
2155 buf_size = 0;
2156 /* compute position (relative time) */
2157 if (find_info_tag(buf, sizeof(buf), "date", info)) {
2158 stream_pos = parse_date(buf, 1);
2159 if (stream_pos == INT64_MIN)
2160 return -1;
2161 } else
2162 stream_pos = 0;
2163 }
2164 if (input_filename[0] == '\0')
2165 return -1;
2166
2167 /* open stream */
2168 if ((ret = av_open_input_file(&s, input_filename, c->stream->ifmt,
2169 buf_size, c->stream->ap_in)) < 0) {
2170 http_log("could not open %s: %d\n", input_filename, ret);
2171 return -1;
2172 }
2173 s->flags |= AVFMT_FLAG_GENPTS;
2174 c->fmt_in = s;
2175 if (strcmp(s->iformat->name, "ffm") && av_find_stream_info(c->fmt_in) < 0) {
2176 http_log("Could not find stream info '%s'\n", input_filename);
2177 av_close_input_file(s);
2178 return -1;
2179 }
2180
2181 /* open each parser */
2182 for(i=0;i<s->nb_streams;i++)
2183 open_parser(s, i);
2184
2185 /* choose stream as clock source (we favorize video stream if
2186 present) for packet sending */
2187 c->pts_stream_index = 0;
2188 for(i=0;i<c->stream->nb_streams;i++) {
2189 if (c->pts_stream_index == 0 &&
2190 c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2191 c->pts_stream_index = i;
2192 }
2193 }
2194
2195 #if 1
2196 if (c->fmt_in->iformat->read_seek)
2197 av_seek_frame(c->fmt_in, -1, stream_pos, 0);
2198 #endif
2199 /* set the start time (needed for maxtime and RTP packet timing) */
2200 c->start_time = cur_time;
2201 c->first_pts = AV_NOPTS_VALUE;
2202 return 0;
2203 }
2204
2205 /* return the server clock (in us) */
2206 static int64_t get_server_clock(HTTPContext *c)
2207 {
2208 /* compute current pts value from system time */
2209 return (cur_time - c->start_time) * 1000;
2210 }
2211
2212 /* return the estimated time at which the current packet must be sent
2213 (in us) */
2214 static int64_t get_packet_send_clock(HTTPContext *c)
2215 {
2216 int bytes_left, bytes_sent, frame_bytes;
2217
2218 frame_bytes = c->cur_frame_bytes;
2219 if (frame_bytes <= 0)
2220 return c->cur_pts;
2221 else {
2222 bytes_left = c->buffer_end - c->buffer_ptr;
2223 bytes_sent = frame_bytes - bytes_left;
2224 return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
2225 }
2226 }
2227
2228
2229 static int http_prepare_data(HTTPContext *c)
2230 {
2231 int i, len, ret;
2232 AVFormatContext *ctx;
2233
2234 av_freep(&c->pb_buffer);
2235 switch(c->state) {
2236 case HTTPSTATE_SEND_DATA_HEADER:
2237 memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
2238 av_metadata_set2(&c->fmt_ctx.metadata, "author" , c->stream->author , 0);
2239 av_metadata_set2(&c->fmt_ctx.metadata, "comment" , c->stream->comment , 0);
2240 av_metadata_set2(&c->fmt_ctx.metadata, "copyright", c->stream->copyright, 0);
2241 av_metadata_set2(&c->fmt_ctx.metadata, "title" , c->stream->title , 0);
2242
2243 for(i=0;i<c->stream->nb_streams;i++) {
2244 AVStream *st;
2245 AVStream *src;
2246 st = av_mallocz(sizeof(AVStream));
2247 c->fmt_ctx.streams[i] = st;
2248 /* if file or feed, then just take streams from FFStream struct */
2249 if (!c->stream->feed ||
2250 c->stream->feed == c->stream)
2251 src = c->stream->streams[i];
2252 else
2253 src = c->stream->feed->streams[c->stream->feed_streams[i]];
2254
2255 *st = *src;
2256 st->priv_data = 0;
2257 st->codec->frame_number = 0; /* XXX: should be done in
2258 AVStream, not in codec */
2259 }
2260 /* set output format parameters */
2261 c->fmt_ctx.oformat = c->stream->fmt;
2262 c->fmt_ctx.nb_streams = c->stream->nb_streams;
2263
2264 c->got_key_frame = 0;
2265
2266 /* prepare header and save header data in a stream */
2267 if (url_open_dyn_buf(&c->fmt_ctx.pb) < 0) {
2268 /* XXX: potential leak */
2269 return -1;
2270 }
2271 c->fmt_ctx.pb->is_streamed = 1;
2272
2273 /*
2274 * HACK to avoid mpeg ps muxer to spit many underflow errors
2275 * Default value from FFmpeg
2276 * Try to set it use configuration option
2277 */
2278 c->fmt_ctx.preload = (int)(0.5*AV_TIME_BASE);
2279 c->fmt_ctx.max_delay = (int)(0.7*AV_TIME_BASE);
2280
2281 av_set_parameters(&c->fmt_ctx, NULL);
2282 if (av_write_header(&c->fmt_ctx) < 0) {
2283 http_log("Error writing output header\n");
2284 return -1;
2285 }
2286 av_metadata_free(&c->fmt_ctx.metadata);
2287
2288 len = url_close_dyn_buf(c->fmt_ctx.pb, &c->pb_buffer);
2289 c->buffer_ptr = c->pb_buffer;
2290 c->buffer_end = c->pb_buffer + len;
2291
2292 c->state = HTTPSTATE_SEND_DATA;
2293 c->last_packet_sent = 0;
2294 break;
2295 case HTTPSTATE_SEND_DATA:
2296 /* find a new packet */
2297 /* read a packet from the input stream */
2298 if (c->stream->feed)
2299 ffm_set_write_index(c->fmt_in,
2300 c->stream->feed->feed_write_index,
2301 c->stream->feed->feed_size);
2302
2303 if (c->stream->max_time &&
2304 c->stream->max_time + c->start_time - cur_time < 0)
2305 /* We have timed out */
2306 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2307 else {
2308 AVPacket pkt;
2309 redo:
2310 ret = av_read_frame(c->fmt_in, &pkt);
2311 if (ret < 0) {
2312 if (c->stream->feed) {
2313 /* if coming from feed, it means we reached the end of the
2314 ffm file, so must wait for more data */
2315 c->state = HTTPSTATE_WAIT_FEED;
2316 return 1; /* state changed */
2317 } else if (ret == AVERROR(EAGAIN)) {
2318 /* input not ready, come back later */
2319 return 0;
2320 } else {
2321 if (c->stream->loop) {
2322 av_close_input_file(c->fmt_in);
2323 c->fmt_in = NULL;
2324 if (open_input_stream(c, "") < 0)
2325 goto no_loop;
2326 goto redo;
2327 } else {
2328 no_loop:
2329 /* must send trailer now because eof or error */
2330 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2331 }
2332 }
2333 } else {
2334 int source_index = pkt.stream_index;
2335 /* update first pts if needed */
2336 if (c->first_pts == AV_NOPTS_VALUE) {
2337 c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q);
2338 c->start_time = cur_time;
2339 }
2340 /* send it to the appropriate stream */
2341 if (c->stream->feed) {
2342 /* if coming from a feed, select the right stream */
2343 if (c->switch_pending) {
2344 c->switch_pending = 0;
2345 for(i=0;i<c->stream->nb_streams;i++) {
2346 if (c->switch_feed_streams[i] == pkt.stream_index)
2347 if (pkt.flags & AV_PKT_FLAG_KEY)
2348 do_switch_stream(c, i);
2349 if (c->switch_feed_streams[i] >= 0)
2350 c->switch_pending = 1;
2351 }
2352 }
2353 for(i=0;i<c->stream->nb_streams;i++) {
2354 if (c->stream->feed_streams[i] == pkt.stream_index) {
2355 AVStream *st = c->fmt_in->streams[source_index];
2356 pkt.stream_index = i;
2357 if (pkt.flags & AV_PKT_FLAG_KEY &&
2358 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2359 c->stream->nb_streams == 1))
2360 c->got_key_frame = 1;
2361 if (!c->stream->send_on_key || c->got_key_frame)
2362 goto send_it;
2363 }
2364 }
2365 } else {
2366 AVCodecContext *codec;
2367 AVStream *ist, *ost;
2368 send_it:
2369 ist = c->fmt_in->streams[source_index];
2370 /* specific handling for RTP: we use several
2371 output stream (one for each RTP
2372 connection). XXX: need more abstract handling */
2373 if (c->is_packetized) {
2374 /* compute send time and duration */
2375 c->cur_pts = av_rescale_q(pkt.dts, ist->time_base, AV_TIME_BASE_Q);
2376 c->cur_pts -= c->first_pts;
2377 c->cur_frame_duration = av_rescale_q(pkt.duration, ist->time_base, AV_TIME_BASE_Q);
2378 /* find RTP context */
2379 c->packet_stream_index = pkt.stream_index;
2380 ctx = c->rtp_ctx[c->packet_stream_index];
2381 if(!ctx) {
2382 av_free_packet(&pkt);
2383 break;
2384 }
2385 codec = ctx->streams[0]->codec;
2386 /* only one stream per RTP connection */
2387 pkt.stream_index = 0;
2388 } else {
2389 ctx = &c->fmt_ctx;
2390 /* Fudge here */
2391 codec = ctx->streams[pkt.stream_index]->codec;
2392 }
2393
2394 if (c->is_packetized) {
2395 int max_packet_size;
2396 if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP)
2397 max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
2398 else
2399 max_packet_size = url_get_max_packet_size(c->rtp_handles[c->packet_stream_index]);
2400 ret = url_open_dyn_packet_buf(&ctx->pb, max_packet_size);
2401 } else {
2402 ret = url_open_dyn_buf(&ctx->pb);
2403 }
2404 if (ret < 0) {
2405 /* XXX: potential leak */
2406 return -1;
2407 }
2408 ost = ctx->streams[pkt.stream_index];
2409
2410 ctx->pb->is_streamed = 1;
2411 if (pkt.dts != AV_NOPTS_VALUE)
2412 pkt.dts = av_rescale_q(pkt.dts, ist->time_base, ost->time_base);
2413 if (pkt.pts != AV_NOPTS_VALUE)
2414 pkt.pts = av_rescale_q(pkt.pts, ist->time_base, ost->time_base);
2415 pkt.duration = av_rescale_q(pkt.duration, ist->time_base, ost->time_base);
2416 if (av_write_frame(ctx, &pkt) < 0) {
2417 http_log("Error writing frame to output\n");
2418 c->state = HTTPSTATE_SEND_DATA_TRAILER;
2419 }
2420
2421 len = url_close_dyn_buf(ctx->pb, &c->pb_buffer);
2422 c->cur_frame_bytes = len;
2423 c->buffer_ptr = c->pb_buffer;
2424 c->buffer_end = c->pb_buffer + len;
2425
2426 codec->frame_number++;
2427 if (len == 0) {
2428 av_free_packet(&pkt);
2429 goto redo;
2430 }
2431 }
2432 av_free_packet(&pkt);
2433 }
2434 }
2435 break;
2436 default:
2437 case HTTPSTATE_SEND_DATA_TRAILER:
2438 /* last packet test ? */
2439 if (c->last_packet_sent || c->is_packetized)
2440 return -1;
2441 ctx = &c->fmt_ctx;
2442 /* prepare header */
2443 if (url_open_dyn_buf(&ctx->pb) < 0) {
2444 /* XXX: potential leak */
2445 return -1;
2446 }
2447 c->fmt_ctx.pb->is_streamed = 1;
2448 av_write_trailer(ctx);
2449 len = url_close_dyn_buf(ctx->pb, &c->pb_buffer);
2450 c->buffer_ptr = c->pb_buffer;
2451 c->buffer_end = c->pb_buffer + len;
2452
2453 c->last_packet_sent = 1;
2454 break;
2455 }
2456 return 0;
2457 }
2458
2459 /* should convert the format at the same time */
2460 /* send data starting at c->buffer_ptr to the output connection
2461 (either UDP or TCP connection) */
2462 static int http_send_data(HTTPContext *c)
2463 {
2464 int len, ret;
2465
2466 for(;;) {
2467 if (c->buffer_ptr >= c->buffer_end) {
2468 ret = http_prepare_data(c);
2469 if (ret < 0)
2470 return -1;
2471 else if (ret != 0)
2472 /* state change requested */
2473 break;
2474 } else {
2475 if (c->is_packetized) {
2476 /* RTP data output */
2477 len = c->buffer_end - c->buffer_ptr;
2478 if (len < 4) {
2479 /* fail safe - should never happen */
2480 fail1:
2481 c->buffer_ptr = c->buffer_end;
2482 return 0;
2483 }
2484 len = (c->buffer_ptr[0] << 24) |
2485 (c->buffer_ptr[1] << 16) |
2486 (c->buffer_ptr[2] << 8) |
2487 (c->buffer_ptr[3]);
2488 if (len > (c->buffer_end - c->buffer_ptr))
2489 goto fail1;
2490 if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) {
2491 /* nothing to send yet: we can wait */
2492 return 0;
2493 }
2494
2495 c->data_count += len;
2496 update_datarate(&c->datarate, c->data_count);
2497 if (c->stream)
2498 c->stream->bytes_served += len;
2499
2500 if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) {
2501 /* RTP packets are sent inside the RTSP TCP connection */
2502 ByteIOContext *pb;
2503 int interleaved_index, size;
2504 uint8_t header[4];
2505 HTTPContext *rtsp_c;
2506
2507 rtsp_c = c->rtsp_c;
2508 /* if no RTSP connection left, error */
2509 if (!rtsp_c)
2510 return -1;
2511 /* if already sending something, then wait. */
2512 if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST)
2513 break;
2514 if (url_open_dyn_buf(&pb) < 0)
2515 goto fail1;
2516 interleaved_index = c->packet_stream_index * 2;
2517 /* RTCP packets are sent at odd indexes */
2518 if (c->buffer_ptr[1] == 200)
2519 interleaved_index++;
2520 /* write RTSP TCP header */
2521 header[0] = '$';
2522 header[1] = interleaved_index;
2523 header[2] = len >> 8;
2524 header[3] = len;
2525 put_buffer(pb, header, 4);
2526 /* write RTP packet data */
2527 c->buffer_ptr += 4;
2528 put_buffer(pb, c->buffer_ptr, len);
2529 size = url_close_dyn_buf(pb, &c->packet_buffer);
2530 /* prepare asynchronous TCP sending */
2531 rtsp_c->packet_buffer_ptr = c->packet_buffer;
2532 rtsp_c->packet_buffer_end = c->packet_buffer + size;
2533 c->buffer_ptr += len;
2534
2535 /* send everything we can NOW */
2536 len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr,
2537 rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0);
2538 if (len > 0)
2539 rtsp_c->packet_buffer_ptr += len;
2540 if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) {
2541 /* if we could not send all the data, we will
2542 send it later, so a new state is needed to
2543 "lock" the RTSP TCP connection */
2544 rtsp_c->state = RTSPSTATE_SEND_PACKET;
2545 break;
2546 } else
2547 /* all data has been sent */
2548 av_freep(&c->packet_buffer);
2549 } else {
2550 /* send RTP packet directly in UDP */
2551 c->buffer_ptr += 4;
2552 url_write(c->rtp_handles[c->packet_stream_index],
2553 c->buffer_ptr, len);
2554 c->buffer_ptr += len;
2555 /* here we continue as we can send several packets per 10 ms slot */
2556 }
2557 } else {
2558 /* TCP data output */
2559 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
2560 if (len < 0) {
2561 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2562 ff_neterrno() != FF_NETERROR(EINTR))
2563 /* error : close connection */
2564 return -1;
2565 else
2566 return 0;
2567 } else
2568 c->buffer_ptr += len;
2569
2570 c->data_count += len;
2571 update_datarate(&c->datarate, c->data_count);
2572 if (c->stream)
2573 c->stream->bytes_served += len;
2574 break;
2575 }
2576 }
2577 } /* for(;;) */
2578 return 0;
2579 }
2580
2581 static int http_start_receive_data(HTTPContext *c)
2582 {
2583 int fd;
2584
2585 if (c->stream->feed_opened)
2586 return -1;
2587
2588 /* Don't permit writing to this one */
2589 if (c->stream->readonly)
2590 return -1;
2591
2592 /* open feed */
2593 fd = open(c->stream->feed_filename, O_RDWR);
2594 if (fd < 0) {
2595 http_log("Error opening feeder file: %s\n", strerror(errno));
2596 return -1;
2597 }
2598 c->feed_fd = fd;
2599
2600 if (c->stream->truncate) {
2601 /* truncate feed file */
2602 ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE);
2603 ftruncate(c->feed_fd, FFM_PACKET_SIZE);
2604 http_log("Truncating feed file '%s'\n", c->stream->feed_filename);
2605 } else {
2606 if ((c->stream->feed_write_index = ffm_read_write_index(fd)) < 0) {
2607 http_log("Error reading write index from feed file: %s\n", strerror(errno));
2608 return -1;
2609 }
2610 }
2611
2612 c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE);
2613 c->stream->feed_size = lseek(fd, 0, SEEK_END);
2614 lseek(fd, 0, SEEK_SET);
2615
2616 /* init buffer input */
2617 c->buffer_ptr = c->buffer;
2618 c->buffer_end = c->buffer + FFM_PACKET_SIZE;
2619 c->stream->feed_opened = 1;
2620 c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked");
2621 return 0;
2622 }
2623
2624 static int http_receive_data(HTTPContext *c)
2625 {
2626 HTTPContext *c1;
2627 int len, loop_run = 0;
2628
2629 while (c->chunked_encoding && !c->chunk_size &&
2630 c->buffer_end > c->buffer_ptr) {
2631 /* read chunk header, if present */
2632 len = recv(c->fd, c->buffer_ptr, 1, 0);
2633
2634 if (len < 0) {
2635 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2636 ff_neterrno() != FF_NETERROR(EINTR))
2637 /* error : close connection */
2638 goto fail;
2639 return 0;
2640 } else if (len == 0) {
2641 /* end of connection : close it */
2642 goto fail;
2643 } else if (c->buffer_ptr - c->buffer >= 2 &&
2644 !memcmp(c->buffer_ptr - 1, "\r\n", 2)) {
2645 c->chunk_size = strtol(c->buffer, 0, 16);
2646 if (c->chunk_size == 0) // end of stream
2647 goto fail;
2648 c->buffer_ptr = c->buffer;
2649 break;
2650 } else if (++loop_run > 10) {
2651 /* no chunk header, abort */
2652 goto fail;
2653 } else {
2654 c->buffer_ptr++;
2655 }
2656 }
2657
2658 if (c->buffer_end > c->buffer_ptr) {
2659 len = recv(c->fd, c->buffer_ptr,
2660 FFMIN(c->chunk_size, c->buffer_end - c->buffer_ptr), 0);
2661 if (len < 0) {
2662 if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2663 ff_neterrno() != FF_NETERROR(EINTR))
2664 /* error : close connection */
2665 goto fail;
2666 } else if (len == 0)
2667 /* end of connection : close it */
2668 goto fail;
2669 else {
2670 c->chunk_size -= len;
2671 c->buffer_ptr += len;
2672 c->data_count += len;
2673 update_datarate(&c->datarate, c->data_count);
2674 }
2675 }
2676
2677 if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) {
2678 if (c->buffer[0] != 'f' ||
2679 c->buffer[1] != 'm') {
2680 http_log("Feed stream has become desynchronized -- disconnecting\n");
2681 goto fail;
2682 }
2683 }
2684
2685 if (c->buffer_ptr >= c->buffer_end) {
2686 FFStream *feed = c->stream;
2687 /* a packet has been received : write it in the store, except
2688 if header */
2689 if (c->data_count > FFM_PACKET_SIZE) {
2690
2691 // printf("writing pos=0x%"PRIx64" size=0x%"PRIx64"\n", feed->feed_write_index, feed->feed_size);
2692 /* XXX: use llseek or url_seek */
2693 lseek(c->feed_fd, feed->feed_write_index, SEEK_SET);
2694 if (write(c->feed_fd, c->buffer, FFM_PACKET_SIZE) < 0) {
2695 http_log("Error writing to feed file: %s\n", strerror(errno));
2696 goto fail;
2697 }
2698
2699 feed->feed_write_index += FFM_PACKET_SIZE;
2700 /* update file size */
2701 if (feed->feed_write_index > c->stream->feed_size)
2702 feed->feed_size = feed->feed_write_index;
2703
2704 /* handle wrap around if max file size reached */
2705 if (c->stream->feed_max_size && feed->feed_write_index >= c->stream->feed_max_size)
2706 feed->feed_write_index = FFM_PACKET_SIZE;
2707
2708 /* write index */
2709 if (ffm_write_write_index(c->feed_fd, feed->feed_write_index) < 0) {
2710 http_log("Error writing index to feed file: %s\n", strerror(errno));
2711 goto fail;
2712 }
2713
2714 /* wake up any waiting connections */
2715 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2716 if (c1->state == HTTPSTATE_WAIT_FEED &&
2717 c1->stream->feed == c->stream->feed)
2718 c1->state = HTTPSTATE_SEND_DATA;
2719 }
2720 } else {
2721 /* We have a header in our hands that contains useful data */
2722 AVFormatContext *s = NULL;
2723 ByteIOContext *pb;
2724 AVInputFormat *fmt_in;
2725 int i;
2726
2727 /* use feed output format name to find corresponding input format */
2728 fmt_in = av_find_input_format(feed->fmt->name);
2729 if (!fmt_in)
2730 goto fail;
2731
2732 url_open_buf(&pb, c->buffer, c->buffer_end - c->buffer, URL_RDONLY);
2733 pb->is_streamed = 1;
2734
2735 if (av_open_input_stream(&s, pb, c->stream->feed_filename, fmt_in, NULL) < 0) {
2736 av_free(pb);
2737 goto fail;
2738 }
2739
2740 /* Now we have the actual streams */
2741 if (s->nb_streams != feed->nb_streams) {
2742 av_close_input_stream(s);
2743 av_free(pb);
2744 http_log("Feed '%s' stream number does not match registered feed\n",
2745 c->stream->feed_filename);
2746 goto fail;
2747 }
2748
2749 for (i = 0; i < s->nb_streams; i++) {
2750 AVStream *fst = feed->streams[i];
2751 AVStream *st = s->streams[i];
2752 avcodec_copy_context(fst->codec, st->codec);
2753 }
2754
2755 av_close_input_stream(s);
2756 av_free(pb);
2757 }
2758 c->buffer_ptr = c->buffer;
2759 }
2760
2761 return 0;
2762 fail:
2763 c->stream->feed_opened = 0;
2764 close(c->feed_fd);
2765 /* wake up any waiting connections to stop waiting for feed */
2766 for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2767 if (c1->state == HTTPSTATE_WAIT_FEED &&
2768 c1->stream->feed == c->stream->feed)
2769 c1->state = HTTPSTATE_SEND_DATA_TRAILER;
2770 }
2771 return -1;
2772 }
2773
2774 /********************************************************************/
2775 /* RTSP handling */
2776
2777 static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number)
2778 {
2779 const char *str;
2780 time_t ti;
2781 struct tm *tm;
2782 char buf2[32];
2783
2784 switch(error_number) {
2785 case RTSP_STATUS_OK:
2786 str = "OK";
2787 break;
2788 case RTSP_STATUS_METHOD:
2789 str = "Method Not Allowed";
2790 break;
2791 case RTSP_STATUS_BANDWIDTH:
2792 str = "Not Enough Bandwidth";
2793 break;
2794 case RTSP_STATUS_SESSION:
2795 str = "Session Not Found";
2796 break;
2797 case RTSP_STATUS_STATE:
2798 str = "Method Not Valid in This State";
2799 break;
2800 case RTSP_STATUS_AGGREGATE:
2801 str = "Aggregate operation not allowed";
2802 break;
2803 case RTSP_STATUS_ONLY_AGGREGATE:
2804 str = "Only aggregate operation allowed";
2805 break;
2806 case RTSP_STATUS_TRANSPORT:
2807 str = "Unsupported transport";
2808 break;
2809 case RTSP_STATUS_INTERNAL:
2810 str = "Internal Server Error";
2811 break;
2812 case RTSP_STATUS_SERVICE:
2813 str = "Service Unavailable";
2814 break;
2815 case RTSP_STATUS_VERSION:
2816 str = "RTSP Version not supported";
2817 break;
2818 default:
2819 str = "Unknown Error";
2820 break;
2821 }
2822
2823 url_fprintf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str);
2824 url_fprintf(c->pb, "CSeq: %d\r\n", c->seq);
2825
2826 /* output GMT time */
2827 ti = time(NULL);
2828 tm = gmtime(&ti);
2829 strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm);
2830 url_fprintf(c->pb, "Date: %s GMT\r\n", buf2);
2831 }
2832
2833 static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number)
2834 {
2835 rtsp_reply_header(c, error_number);
2836 url_fprintf(c->pb, "\r\n");
2837 }
2838
2839 static int rtsp_parse_request(HTTPContext *c)
2840 {
2841 const char *p, *p1, *p2;
2842 char cmd[32];
2843 char url[1024];
2844 char protocol[32];
2845 char line[1024];
2846 int len;
2847 RTSPMessageHeader header1, *header = &header1;
2848
2849 c->buffer_ptr[0] = '\0';
2850 p = c->buffer;
2851
2852 get_word(cmd, sizeof(cmd), &p);
2853 get_word(url, sizeof(url), &p);
2854 get_word(protocol, sizeof(protocol), &p);
2855
2856 av_strlcpy(c->method, cmd, sizeof(c->method));
2857 av_strlcpy(c->url, url, sizeof(c->url));
2858 av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
2859
2860 if (url_open_dyn_buf(&c->pb) < 0) {
2861 /* XXX: cannot do more */
2862 c->pb = NULL; /* safety */
2863 return -1;
2864 }
2865
2866 /* check version name */
2867 if (strcmp(protocol, "RTSP/1.0") != 0) {
2868 rtsp_reply_error(c, RTSP_STATUS_VERSION);
2869 goto the_end;
2870 }
2871
2872 /* parse each header line */
2873 memset(header, 0, sizeof(*header));
2874 /* skip to next line */
2875 while (*p != '\n' && *p != '\0')
2876 p++;
2877 if (*p == '\n')
2878 p++;
2879 while (*p != '\0') {
2880 p1 = memchr(p, '\n', (char *)c->buffer_ptr - p);
2881 if (!p1)
2882 break;
2883 p2 = p1;
2884 if (p2 > p && p2[-1] == '\r')
2885 p2--;
2886 /* skip empty line */
2887 if (p2 == p)
2888 break;
2889 len = p2 - p;
2890 if (len > sizeof(line) - 1)
2891 len = sizeof(line) - 1;
2892 memcpy(line, p, len);
2893 line[len] = '\0';
2894 ff_rtsp_parse_line(header, line, NULL);
2895 p = p1 + 1;
2896 }
2897
2898 /* handle sequence number */
2899 c->seq = header->seq;
2900
2901 if (!strcmp(cmd, "DESCRIBE"))
2902 rtsp_cmd_describe(c, url);
2903 else if (!strcmp(cmd, "OPTIONS"))
2904 rtsp_cmd_options(c, url);
2905 else if (!strcmp(cmd, "SETUP"))
2906 rtsp_cmd_setup(c, url, header);
2907 else if (!strcmp(cmd, "PLAY"))
2908 rtsp_cmd_play(c, url, header);
2909 else if (!strcmp(cmd, "PAUSE"))
2910 rtsp_cmd_pause(c, url, header);
2911 else if (!strcmp(cmd, "TEARDOWN"))
2912 rtsp_cmd_teardown(c, url, header);
2913 else
2914 rtsp_reply_error(c, RTSP_STATUS_METHOD);
2915
2916 the_end:
2917 len = url_close_dyn_buf(c->pb, &c->pb_buffer);
2918 c->pb = NULL; /* safety */
2919 if (len < 0) {
2920 /* XXX: cannot do more */
2921 return -1;
2922 }
2923 c->buffer_ptr = c->pb_buffer;
2924 c->buffer_end = c->pb_buffer + len;
2925 c->state = RTSPSTATE_SEND_REPLY;
2926 return 0;
2927 }
2928
2929 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
2930 struct in_addr my_ip)
2931 {
2932 AVFormatContext *avc;
2933 AVStream avs[MAX_STREAMS];
2934 int i;
2935
2936 avc = avformat_alloc_context();
2937 if (avc == NULL) {
2938 return -1;
2939 }
2940 av_metadata_set2(&avc->metadata, "title",
2941 stream->title[0] ? stream->title : "No Title", 0);
2942 avc->nb_streams = stream->nb_streams;
2943 if (stream->is_multicast) {
2944 snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d",
2945 inet_ntoa(stream->multicast_ip),
2946 stream->multicast_port, stream->multicast_ttl);
2947 } else {
2948 snprintf(avc->filename, 1024, "rtp://0.0.0.0");
2949 }
2950
2951 for(i = 0; i < stream->nb_streams; i++) {
2952 avc->streams[i] = &avs[i];
2953 avc->streams[i]->codec = stream->streams[i]->codec;
2954 }
2955 *pbuffer = av_mallocz(2048);
2956 avf_sdp_create(&avc, 1, *pbuffer, 2048);
2957 av_metadata_free(&avc->metadata);
2958 av_free(avc);
2959
2960 return strlen(*pbuffer);
2961 }
2962
2963 static void rtsp_cmd_options(HTTPContext *c, const char *url)
2964 {
2965 // rtsp_reply_header(c, RTSP_STATUS_OK);
2966 url_fprintf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK");
2967 url_fprintf(c->pb, "CSeq: %d\r\n", c->seq);
2968 url_fprintf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
2969 url_fprintf(c->pb, "\r\n");
2970 }
2971
2972 static void rtsp_cmd_describe(HTTPContext *c, const char *url)
2973 {
2974 FFStream *stream;
2975 char path1[1024];
2976 const char *path;
2977 uint8_t *content;
2978 int content_length, len;
2979 struct sockaddr_in my_addr;
2980
2981 /* find which url is asked */
2982 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2983 path = path1;
2984 if (*path == '/')
2985 path++;
2986
2987 for(stream = first_stream; stream != NULL; stream = stream->next) {
2988 if (!stream->is_feed &&
2989 stream->fmt && !strcmp(stream->fmt->name, "rtp") &&
2990 !strcmp(path, stream->filename)) {
2991 goto found;
2992 }
2993 }
2994 /* no stream found */
2995 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
2996 return;
2997
2998 found:
2999 /* prepare the media description in sdp format */
3000
3001 /* get the host IP */
3002 len = sizeof(my_addr);
3003 getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
3004 content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr);
3005 if (content_length < 0) {
3006 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3007 return;
3008 }
3009 rtsp_reply_header(c, RTSP_STATUS_OK);
3010 url_fprintf(c->pb, "Content-Base: %s/\r\n", url);
3011 url_fprintf(c->pb, "Content-Type: application/sdp\r\n");
3012 url_fprintf(c->pb, "Content-Length: %d\r\n", content_length);
3013 url_fprintf(c->pb, "\r\n");
3014 put_buffer(c->pb, content, content_length);
3015 av_free(content);
3016 }
3017
3018 static HTTPContext *find_rtp_session(const char *session_id)
3019 {
3020 HTTPContext *c;
3021
3022 if (session_id[0] == '\0')
3023 return NULL;
3024
3025 for(c = first_http_ctx; c != NULL; c = c->next) {
3026 if (!strcmp(c->session_id, session_id))
3027 return c;
3028 }
3029 return NULL;
3030 }
3031
3032 static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport)
3033 {
3034 RTSPTransportField *th;
3035 int i;
3036
3037 for(i=0;i<h->nb_transports;i++) {
3038 th = &h->transports[i];
3039 if (th->lower_transport == lower_transport)
3040 return th;
3041 }
3042 return NULL;
3043 }
3044
3045 static void rtsp_cmd_setup(HTTPContext *c, const char *url,
3046 RTSPMessageHeader *h)
3047 {
3048 FFStream *stream;
3049 int stream_index, rtp_port, rtcp_port;
3050 char buf[1024];
3051 char path1[1024];
3052 const char *path;
3053 HTTPContext *rtp_c;
3054 RTSPTransportField *th;
3055 struct sockaddr_in dest_addr;
3056 RTSPActionServerSetup setup;
3057
3058 /* find which url is asked */
3059 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3060 path = path1;
3061 if (*path == '/')
3062 path++;
3063
3064 /* now check each stream */
3065 for(stream = first_stream; stream != NULL; stream = stream->next) {
3066 if (!stream->is_feed &&
3067 stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
3068 /* accept aggregate filenames only if single stream */
3069 if (!strcmp(path, stream->filename)) {
3070 if (stream->nb_streams != 1) {
3071 rtsp_reply_error(c, RTSP_STATUS_AGGREGATE);
3072 return;
3073 }
3074 stream_index = 0;
3075 goto found;
3076 }
3077
3078 for(stream_index = 0; stream_index < stream->nb_streams;
3079 stream_index++) {
3080 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3081 stream->filename, stream_index);
3082 if (!strcmp(path, buf))
3083 goto found;
3084 }
3085 }
3086 }
3087 /* no stream found */
3088 rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
3089 return;
3090 found:
3091
3092 /* generate session id if needed */
3093 if (h->session_id[0] == '\0')
3094 snprintf(h->session_id, sizeof(h->session_id), "%08x%08x",
3095 av_lfg_get(&random_state), av_lfg_get(&random_state));
3096
3097 /* find rtp session, and create it if none found */
3098 rtp_c = find_rtp_session(h->session_id);
3099 if (!rtp_c) {
3100 /* always prefer UDP */
3101 th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP);
3102 if (!th) {
3103 th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP);
3104 if (!th) {
3105 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3106 return;
3107 }
3108 }
3109
3110 rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id,
3111 th->lower_transport);
3112 if (!rtp_c) {
3113 rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH);
3114 return;
3115 }
3116
3117 /* open input stream */
3118 if (open_input_stream(rtp_c, "") < 0) {
3119 rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3120 return;
3121 }
3122 }
3123
3124 /* test if stream is OK (test needed because several SETUP needs
3125 to be done for a given file) */
3126 if (rtp_c->stream != stream) {
3127 rtsp_reply_error(c, RTSP_STATUS_SERVICE);
3128 return;
3129 }
3130
3131 /* test if stream is already set up */
3132 if (rtp_c->rtp_ctx[stream_index]) {
3133 rtsp_reply_error(c, RTSP_STATUS_STATE);
3134 return;
3135 }
3136
3137 /* check transport */
3138 th = find_transport(h, rtp_c->rtp_protocol);
3139 if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
3140 th->client_port_min <= 0)) {
3141 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3142 return;
3143 }
3144
3145 /* setup default options */
3146 setup.transport_option[0] = '\0';
3147 dest_addr = rtp_c->from_addr;
3148 dest_addr.sin_port = htons(th->client_port_min);
3149
3150 /* setup stream */
3151 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) {
3152 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3153 return;
3154 }
3155
3156 /* now everything is OK, so we can send the connection parameters */
3157 rtsp_reply_header(c, RTSP_STATUS_OK);
3158 /* session ID */
3159 url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3160
3161 switch(rtp_c->rtp_protocol) {
3162 case RTSP_LOWER_TRANSPORT_UDP:
3163 rtp_port = rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]);
3164 rtcp_port = rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]);
3165 url_fprintf(c->pb, "Transport: RTP/AVP/UDP;unicast;"
3166 "client_port=%d-%d;server_port=%d-%d",
3167 th->client_port_min, th->client_port_max,
3168 rtp_port, rtcp_port);
3169 break;
3170 case RTSP_LOWER_TRANSPORT_TCP:
3171 url_fprintf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d",
3172 stream_index * 2, stream_index * 2 + 1);
3173 break;
3174 default:
3175 break;
3176 }
3177 if (setup.transport_option[0] != '\0')
3178 url_fprintf(c->pb, ";%s", setup.transport_option);
3179 url_fprintf(c->pb, "\r\n");
3180
3181
3182 url_fprintf(c->pb, "\r\n");
3183 }
3184
3185
3186 /* find an rtp connection by using the session ID. Check consistency
3187 with filename */
3188 static HTTPContext *find_rtp_session_with_url(const char *url,
3189 const char *session_id)
3190 {
3191 HTTPContext *rtp_c;
3192 char path1[1024];
3193 const char *path;
3194 char buf[1024];
3195 int s;
3196
3197 rtp_c = find_rtp_session(session_id);
3198 if (!rtp_c)
3199 return NULL;
3200
3201 /* find which url is asked */
3202 av_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3203 path = path1;
3204 if (*path == '/')
3205 path++;
3206 if(!strcmp(path, rtp_c->stream->filename)) return rtp_c;
3207 for(s=0; s<rtp_c->stream->nb_streams; ++s) {
3208 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3209 rtp_c->stream->filename, s);
3210 if(!strncmp(path, buf, sizeof(buf))) {
3211 // XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1?
3212 return rtp_c;
3213 }
3214 }
3215 return NULL;
3216 }
3217
3218 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3219 {
3220 HTTPContext *rtp_c;
3221
3222 rtp_c = find_rtp_session_with_url(url, h->session_id);
3223 if (!rtp_c) {
3224 rtsp_reply_error(c, RTSP_STATUS_SESSION);
3225 return;
3226 }
3227
3228 if (rtp_c->state != HTTPSTATE_SEND_DATA &&
3229 rtp_c->state != HTTPSTATE_WAIT_FEED &&
3230 rtp_c->state != HTTPSTATE_READY) {
3231 rtsp_reply_error(c, RTSP_STATUS_STATE);
3232 return;
3233 }
3234
3235 rtp_c->state = HTTPSTATE_SEND_DATA;
3236
3237 /* now everything is OK, so we can send the connection parameters */
3238 rtsp_reply_header(c, RTSP_STATUS_OK);
3239 /* session ID */
3240 url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3241 url_fprintf(c->pb, "\r\n");
3242 }
3243
3244 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3245 {
3246 HTTPContext *rtp_c;
3247
3248 rtp_c