ffserver: Allow floating point audio bit rates
[ffmpeg.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 "libavcodec/opt.h"
40 #include <stdarg.h>
41 #include <unistd.h>
42 #include <fcntl.h>
43 #include <sys/ioctl.h>
44 #if HAVE_POLL_H
45 #include <poll.h>
46 #endif
47 #include <errno.h>
48 #include <sys/time.h>
49 #include <time.h>
50 #include <sys/wait.h>
51 #include <signal.h>
52 #if HAVE_DLFCN_H
53 #include <dlfcn.h>
54 #endif
55
56 #include "cmdutils.h"
57
58 const char program_name[] = "FFserver";
59 const int program_birth_year = 2000;
60
61 static const OptionDef options[];
62
63 enum HTTPState {
64     HTTPSTATE_WAIT_REQUEST,
65     HTTPSTATE_SEND_HEADER,
66     HTTPSTATE_SEND_DATA_HEADER,
67     HTTPSTATE_SEND_DATA,          /* sending TCP or UDP data */
68     HTTPSTATE_SEND_DATA_TRAILER,
69     HTTPSTATE_RECEIVE_DATA,
70     HTTPSTATE_WAIT_FEED,          /* wait for data from the feed */
71     HTTPSTATE_READY,
72
73     RTSPSTATE_WAIT_REQUEST,
74     RTSPSTATE_SEND_REPLY,
75     RTSPSTATE_SEND_PACKET,
76 };
77
78 static const char *http_state[] = {
79     "HTTP_WAIT_REQUEST",
80     "HTTP_SEND_HEADER",
81
82     "SEND_DATA_HEADER",
83     "SEND_DATA",
84     "SEND_DATA_TRAILER",
85     "RECEIVE_DATA",
86     "WAIT_FEED",
87     "READY",
88
89     "RTSP_WAIT_REQUEST",
90     "RTSP_SEND_REPLY",
91     "RTSP_SEND_PACKET",
92 };
93
94 #define IOBUFFER_INIT_SIZE 8192
95
96 /* timeouts are in ms */
97 #define HTTP_REQUEST_TIMEOUT (15 * 1000)
98 #define RTSP_REQUEST_TIMEOUT (3600 * 24 * 1000)
99
100 #define SYNC_TIMEOUT (10 * 1000)
101
102 typedef struct RTSPActionServerSetup {
103     uint32_t ipaddr;
104     char transport_option[512];
105 } RTSPActionServerSetup;
106
107 typedef struct {
108     int64_t count1, count2;
109     int64_t time1, time2;
110 } DataRateData;
111
112 /* context associated with one connection */
113 typedef struct HTTPContext {
114     enum HTTPState state;
115     int fd; /* socket file descriptor */
116     struct sockaddr_in from_addr; /* origin */
117     struct pollfd *poll_entry; /* used when polling */
118     int64_t timeout;
119     uint8_t *buffer_ptr, *buffer_end;
120     int http_error;
121     int post;
122     int chunked_encoding;
123     int chunk_size;               /* 0 if it needs to be read */
124     struct HTTPContext *next;
125     int got_key_frame; /* stream 0 => 1, stream 1 => 2, stream 2=> 4 */
126     int64_t data_count;
127     /* feed input */
128     int feed_fd;
129     /* input format handling */
130     AVFormatContext *fmt_in;
131     int64_t start_time;            /* In milliseconds - this wraps fairly often */
132     int64_t first_pts;            /* initial pts value */
133     int64_t cur_pts;             /* current pts value from the stream in us */
134     int64_t cur_frame_duration;  /* duration of the current frame in us */
135     int cur_frame_bytes;       /* output frame size, needed to compute
136                                   the time at which we send each
137                                   packet */
138     int pts_stream_index;        /* stream we choose as clock reference */
139     int64_t cur_clock;           /* current clock reference value in us */
140     /* output format handling */
141     struct FFStream *stream;
142     /* -1 is invalid stream */
143     int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
144     int switch_feed_streams[MAX_STREAMS]; /* index of streams in the feed */
145     int switch_pending;
146     AVFormatContext fmt_ctx; /* instance of FFStream for one user */
147     int last_packet_sent; /* true if last data packet was sent */
148     int suppress_log;
149     DataRateData datarate;
150     int wmp_client_id;
151     char protocol[16];
152     char method[16];
153     char url[128];
154     int buffer_size;
155     uint8_t *buffer;
156     int is_packetized; /* if true, the stream is packetized */
157     int packet_stream_index; /* current stream for output in state machine */
158
159     /* RTSP state specific */
160     uint8_t *pb_buffer; /* XXX: use that in all the code */
161     ByteIOContext *pb;
162     int seq; /* RTSP sequence number */
163
164     /* RTP state specific */
165     enum RTSPLowerTransport rtp_protocol;
166     char session_id[32]; /* session id */
167     AVFormatContext *rtp_ctx[MAX_STREAMS];
168
169     /* RTP/UDP specific */
170     URLContext *rtp_handles[MAX_STREAMS];
171
172     /* RTP/TCP specific */
173     struct HTTPContext *rtsp_c;
174     uint8_t *packet_buffer, *packet_buffer_ptr, *packet_buffer_end;
175 } HTTPContext;
176
177 /* each generated stream is described here */
178 enum StreamType {
179     STREAM_TYPE_LIVE,
180     STREAM_TYPE_STATUS,
181     STREAM_TYPE_REDIRECT,
182 };
183
184 enum IPAddressAction {
185     IP_ALLOW = 1,
186     IP_DENY,
187 };
188
189 typedef struct IPAddressACL {
190     struct IPAddressACL *next;
191     enum IPAddressAction action;
192     /* These are in host order */
193     struct in_addr first;
194     struct in_addr last;
195 } IPAddressACL;
196
197 /* description of each stream of the ffserver.conf file */
198 typedef struct FFStream {
199     enum StreamType stream_type;
200     char filename[1024];     /* stream filename */
201     struct FFStream *feed;   /* feed we are using (can be null if
202                                 coming from file) */
203     AVFormatParameters *ap_in; /* input parameters */
204     AVInputFormat *ifmt;       /* if non NULL, force input format */
205     AVOutputFormat *fmt;
206     IPAddressACL *acl;
207     char dynamic_acl[1024];
208     int nb_streams;
209     int prebuffer;      /* Number of millseconds early to start */
210     int64_t max_time;      /* Number of milliseconds to run */
211     int send_on_key;
212     AVStream *streams[MAX_STREAMS];
213     int feed_streams[MAX_STREAMS]; /* index of streams in the feed */
214     char feed_filename[1024]; /* file name of the feed storage, or
215                                  input file name for a stream */
216     char author[512];
217     char title[512];
218     char copyright[512];
219     char comment[512];
220     pid_t pid;  /* Of ffmpeg process */
221     time_t pid_start;  /* Of ffmpeg process */
222     char **child_argv;
223     struct FFStream *next;
224     unsigned bandwidth; /* bandwidth, in kbits/s */
225     /* RTSP options */
226     char *rtsp_option;
227     /* multicast specific */
228     int is_multicast;
229     struct in_addr multicast_ip;
230     int multicast_port; /* first port used for multicast */
231     int multicast_ttl;
232     int loop; /* if true, send the stream in loops (only meaningful if file) */
233
234     /* feed specific */
235     int feed_opened;     /* true if someone is writing to the feed */
236     int is_feed;         /* true if it is a feed */
237     int readonly;        /* True if writing is prohibited to the file */
238     int truncate;        /* True if feeder connection truncate the feed file */
239     int conns_served;
240     int64_t bytes_served;
241     int64_t feed_max_size;      /* maximum storage size, zero means unlimited */
242     int64_t feed_write_index;   /* current write position in feed (it wraps around) */
243     int64_t feed_size;          /* current size of feed */
244     struct FFStream *next_feed;
245 } FFStream;
246
247 typedef struct FeedData {
248     long long data_count;
249     float avg_frame_size;   /* frame size averaged over last frames with exponential mean */
250 } FeedData;
251
252 static struct sockaddr_in my_http_addr;
253 static struct sockaddr_in my_rtsp_addr;
254
255 static char logfilename[1024];
256 static HTTPContext *first_http_ctx;
257 static FFStream *first_feed;   /* contains only feeds */
258 static FFStream *first_stream; /* contains all streams, including feeds */
259
260 static void new_connection(int server_fd, int is_rtsp);
261 static void close_connection(HTTPContext *c);
262
263 /* HTTP handling */
264 static int handle_connection(HTTPContext *c);
265 static int http_parse_request(HTTPContext *c);
266 static int http_send_data(HTTPContext *c);
267 static void compute_status(HTTPContext *c);
268 static int open_input_stream(HTTPContext *c, const char *info);
269 static int http_start_receive_data(HTTPContext *c);
270 static int http_receive_data(HTTPContext *c);
271
272 /* RTSP handling */
273 static int rtsp_parse_request(HTTPContext *c);
274 static void rtsp_cmd_describe(HTTPContext *c, const char *url);
275 static void rtsp_cmd_options(HTTPContext *c, const char *url);
276 static void rtsp_cmd_setup(HTTPContext *c, const char *url, RTSPMessageHeader *h);
277 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h);
278 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h);
279 static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPMessageHeader *h);
280
281 /* SDP handling */
282 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
283                                    struct in_addr my_ip);
284
285 /* RTP handling */
286 static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
287                                        FFStream *stream, const char *session_id,
288                                        enum RTSPLowerTransport rtp_protocol);
289 static int rtp_new_av_stream(HTTPContext *c,
290                              int stream_index, struct sockaddr_in *dest_addr,
291                              HTTPContext *rtsp_c);
292
293 static const char *my_program_name;
294 static const char *my_program_dir;
295
296 static const char *config_filename = "/etc/ffserver.conf";
297
298 static int ffserver_debug;
299 static int ffserver_daemon;
300 static int no_launch;
301 static int need_to_start_children;
302
303 /* maximum number of simultaneous HTTP connections */
304 static unsigned int nb_max_http_connections = 2000;
305 static unsigned int nb_max_connections = 5;
306 static unsigned int nb_connections;
307
308 static uint64_t max_bandwidth = 1000;
309 static uint64_t current_bandwidth;
310
311 static int64_t cur_time;           // Making this global saves on passing it around everywhere
312
313 static AVLFG random_state;
314
315 static FILE *logfile = NULL;
316
317 /* FIXME: make ffserver work with IPv6 */
318 /* resolve host with also IP address parsing */
319 static int resolve_host(struct in_addr *sin_addr, const char *hostname)
320 {
321
322     if (!ff_inet_aton(hostname, sin_addr)) {
323 #if HAVE_GETADDRINFO
324         struct addrinfo *ai, *cur;
325         struct addrinfo hints;
326         memset(&hints, 0, sizeof(hints));
327         hints.ai_family = AF_INET;
328         if (getaddrinfo(hostname, NULL, &hints, &ai))
329             return -1;
330         /* getaddrinfo returns a linked list of addrinfo structs.
331          * Even if we set ai_family = AF_INET above, make sure
332          * that the returned one actually is of the correct type. */
333         for (cur = ai; cur; cur = cur->ai_next) {
334             if (cur->ai_family == AF_INET) {
335                 *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
336                 freeaddrinfo(ai);
337                 return 0;
338             }
339         }
340         freeaddrinfo(ai);
341         return -1;
342 #else
343         struct hostent *hp;
344         hp = gethostbyname(hostname);
345         if (!hp)
346             return -1;
347         memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
348 #endif
349     }
350     return 0;
351 }
352
353 static char *ctime1(char *buf2)
354 {
355     time_t ti;
356     char *p;
357
358     ti = time(NULL);
359     p = ctime(&ti);
360     strcpy(buf2, p);
361     p = buf2 + strlen(p) - 1;
362     if (*p == '\n')
363         *p = '\0';
364     return buf2;
365 }
366
367 static void http_vlog(const char *fmt, va_list vargs)
368 {
369     static int print_prefix = 1;
370     if (logfile) {
371         if (print_prefix) {
372             char buf[32];
373             ctime1(buf);
374             fprintf(logfile, "%s ", buf);
375         }
376         print_prefix = strstr(fmt, "\n") != NULL;
377         vfprintf(logfile, fmt, vargs);
378         fflush(logfile);
379     }
380 }
381
382 static void __attribute__ ((format (printf, 1, 2))) http_log(const char *fmt, ...)
383 {
384     va_list vargs;
385     va_start(vargs, fmt);
386     http_vlog(fmt, vargs);
387     va_end(vargs);
388 }
389
390 static void http_av_log(void *ptr, int level, const char *fmt, va_list vargs)
391 {
392     static int print_prefix = 1;
393     AVClass *avc = ptr ? *(AVClass**)ptr : NULL;
394     if (level > av_log_get_level())
395         return;
396     if (print_prefix && avc)
397         http_log("[%s @ %p]", avc->item_name(ptr), ptr);
398     print_prefix = strstr(fmt, "\n") != NULL;
399     http_vlog(fmt, vargs);
400 }
401
402 static void log_connection(HTTPContext *c)
403 {
404     if (c->suppress_log)
405         return;
406
407     http_log("%s - - [%s] \"%s %s\" %d %"PRId64"\n",
408              inet_ntoa(c->from_addr.sin_addr), c->method, c->url,
409              c->protocol, (c->http_error ? c->http_error : 200), c->data_count);
410 }
411
412 static void update_datarate(DataRateData *drd, int64_t count)
413 {
414     if (!drd->time1 && !drd->count1) {
415         drd->time1 = drd->time2 = cur_time;
416         drd->count1 = drd->count2 = count;
417     } else if (cur_time - drd->time2 > 5000) {
418         drd->time1 = drd->time2;
419         drd->count1 = drd->count2;
420         drd->time2 = cur_time;
421         drd->count2 = count;
422     }
423 }
424
425 /* In bytes per second */
426 static int compute_datarate(DataRateData *drd, int64_t count)
427 {
428     if (cur_time == drd->time1)
429         return 0;
430
431     return ((count - drd->count1) * 1000) / (cur_time - drd->time1);
432 }
433
434
435 static void start_children(FFStream *feed)
436 {
437     if (no_launch)
438         return;
439
440     for (; feed; feed = feed->next) {
441         if (feed->child_argv && !feed->pid) {
442             feed->pid_start = time(0);
443
444             feed->pid = fork();
445
446             if (feed->pid < 0) {
447                 http_log("Unable to create children\n");
448                 exit(1);
449             }
450             if (!feed->pid) {
451                 /* In child */
452                 char pathname[1024];
453                 char *slash;
454                 int i;
455
456                 av_strlcpy(pathname, my_program_name, sizeof(pathname));
457
458                 slash = strrchr(pathname, '/');
459                 if (!slash)
460                     slash = pathname;
461                 else
462                     slash++;
463                 strcpy(slash, "ffmpeg");
464
465                 http_log("Launch commandline: ");
466                 http_log("%s ", pathname);
467                 for (i = 1; feed->child_argv[i] && feed->child_argv[i][0]; i++)
468                     http_log("%s ", feed->child_argv[i]);
469                 http_log("\n");
470
471                 for (i = 3; i < 256; i++)
472                     close(i);
473
474                 if (!ffserver_debug) {
475                     i = open("/dev/null", O_RDWR);
476                     if (i != -1) {
477                         dup2(i, 0);
478                         dup2(i, 1);
479                         dup2(i, 2);
480                         close(i);
481                     }
482                 }
483
484                 /* This is needed to make relative pathnames work */
485                 chdir(my_program_dir);
486
487                 signal(SIGPIPE, SIG_DFL);
488
489                 execvp(pathname, feed->child_argv);
490
491                 _exit(1);
492             }
493         }
494     }
495 }
496
497 /* open a listening socket */
498 static int socket_open_listen(struct sockaddr_in *my_addr)
499 {
500     int server_fd, tmp;
501
502     server_fd = socket(AF_INET,SOCK_STREAM,0);
503     if (server_fd < 0) {
504         perror ("socket");
505         return -1;
506     }
507
508     tmp = 1;
509     setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp));
510
511     if (bind (server_fd, (struct sockaddr *) my_addr, sizeof (*my_addr)) < 0) {
512         char bindmsg[32];
513         snprintf(bindmsg, sizeof(bindmsg), "bind(port %d)", ntohs(my_addr->sin_port));
514         perror (bindmsg);
515         closesocket(server_fd);
516         return -1;
517     }
518
519     if (listen (server_fd, 5) < 0) {
520         perror ("listen");
521         closesocket(server_fd);
522         return -1;
523     }
524     ff_socket_nonblock(server_fd, 1);
525
526     return server_fd;
527 }
528
529 /* start all multicast streams */
530 static void start_multicast(void)
531 {
532     FFStream *stream;
533     char session_id[32];
534     HTTPContext *rtp_c;
535     struct sockaddr_in dest_addr;
536     int default_port, stream_index;
537
538     default_port = 6000;
539     for(stream = first_stream; stream != NULL; stream = stream->next) {
540         if (stream->is_multicast) {
541             /* open the RTP connection */
542             snprintf(session_id, sizeof(session_id), "%08x%08x",
543                      av_lfg_get(&random_state), av_lfg_get(&random_state));
544
545             /* choose a port if none given */
546             if (stream->multicast_port == 0) {
547                 stream->multicast_port = default_port;
548                 default_port += 100;
549             }
550
551             dest_addr.sin_family = AF_INET;
552             dest_addr.sin_addr = stream->multicast_ip;
553             dest_addr.sin_port = htons(stream->multicast_port);
554
555             rtp_c = rtp_new_connection(&dest_addr, stream, session_id,
556                                        RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
557             if (!rtp_c)
558                 continue;
559
560             if (open_input_stream(rtp_c, "") < 0) {
561                 http_log("Could not open input stream for stream '%s'\n",
562                          stream->filename);
563                 continue;
564             }
565
566             /* open each RTP stream */
567             for(stream_index = 0; stream_index < stream->nb_streams;
568                 stream_index++) {
569                 dest_addr.sin_port = htons(stream->multicast_port +
570                                            2 * stream_index);
571                 if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, NULL) < 0) {
572                     http_log("Could not open output stream '%s/streamid=%d'\n",
573                              stream->filename, stream_index);
574                     exit(1);
575                 }
576             }
577
578             /* change state to send data */
579             rtp_c->state = HTTPSTATE_SEND_DATA;
580         }
581     }
582 }
583
584 /* main loop of the http server */
585 static int http_server(void)
586 {
587     int server_fd = 0, rtsp_server_fd = 0;
588     int ret, delay, delay1;
589     struct pollfd *poll_table, *poll_entry;
590     HTTPContext *c, *c_next;
591
592     if(!(poll_table = av_mallocz((nb_max_http_connections + 2)*sizeof(*poll_table)))) {
593         http_log("Impossible to allocate a poll table handling %d connections.\n", nb_max_http_connections);
594         return -1;
595     }
596
597     if (my_http_addr.sin_port) {
598         server_fd = socket_open_listen(&my_http_addr);
599         if (server_fd < 0)
600             return -1;
601     }
602
603     if (my_rtsp_addr.sin_port) {
604         rtsp_server_fd = socket_open_listen(&my_rtsp_addr);
605         if (rtsp_server_fd < 0)
606             return -1;
607     }
608
609     if (!rtsp_server_fd && !server_fd) {
610         http_log("HTTP and RTSP disabled.\n");
611         return -1;
612     }
613
614     http_log("FFserver started.\n");
615
616     start_children(first_feed);
617
618     start_multicast();
619
620     for(;;) {
621         poll_entry = poll_table;
622         if (server_fd) {
623             poll_entry->fd = server_fd;
624             poll_entry->events = POLLIN;
625             poll_entry++;
626         }
627         if (rtsp_server_fd) {
628             poll_entry->fd = rtsp_server_fd;
629             poll_entry->events = POLLIN;
630             poll_entry++;
631         }
632
633         /* wait for events on each HTTP handle */
634         c = first_http_ctx;
635         delay = 1000;
636         while (c != NULL) {
637             int fd;
638             fd = c->fd;
639             switch(c->state) {
640             case HTTPSTATE_SEND_HEADER:
641             case RTSPSTATE_SEND_REPLY:
642             case RTSPSTATE_SEND_PACKET:
643                 c->poll_entry = poll_entry;
644                 poll_entry->fd = fd;
645                 poll_entry->events = POLLOUT;
646                 poll_entry++;
647                 break;
648             case HTTPSTATE_SEND_DATA_HEADER:
649             case HTTPSTATE_SEND_DATA:
650             case HTTPSTATE_SEND_DATA_TRAILER:
651                 if (!c->is_packetized) {
652                     /* for TCP, we output as much as we can (may need to put a limit) */
653                     c->poll_entry = poll_entry;
654                     poll_entry->fd = fd;
655                     poll_entry->events = POLLOUT;
656                     poll_entry++;
657                 } else {
658                     /* when ffserver is doing the timing, we work by
659                        looking at which packet need to be sent every
660                        10 ms */
661                     delay1 = 10; /* one tick wait XXX: 10 ms assumed */
662                     if (delay1 < delay)
663                         delay = delay1;
664                 }
665                 break;
666             case HTTPSTATE_WAIT_REQUEST:
667             case HTTPSTATE_RECEIVE_DATA:
668             case HTTPSTATE_WAIT_FEED:
669             case RTSPSTATE_WAIT_REQUEST:
670                 /* need to catch errors */
671                 c->poll_entry = poll_entry;
672                 poll_entry->fd = fd;
673                 poll_entry->events = POLLIN;/* Maybe this will work */
674                 poll_entry++;
675                 break;
676             default:
677                 c->poll_entry = NULL;
678                 break;
679             }
680             c = c->next;
681         }
682
683         /* wait for an event on one connection. We poll at least every
684            second to handle timeouts */
685         do {
686             ret = poll(poll_table, poll_entry - poll_table, delay);
687             if (ret < 0 && ff_neterrno() != FF_NETERROR(EAGAIN) &&
688                 ff_neterrno() != FF_NETERROR(EINTR))
689                 return -1;
690         } while (ret < 0);
691
692         cur_time = av_gettime() / 1000;
693
694         if (need_to_start_children) {
695             need_to_start_children = 0;
696             start_children(first_feed);
697         }
698
699         /* now handle the events */
700         for(c = first_http_ctx; c != NULL; c = c_next) {
701             c_next = c->next;
702             if (handle_connection(c) < 0) {
703                 /* close and free the connection */
704                 log_connection(c);
705                 close_connection(c);
706             }
707         }
708
709         poll_entry = poll_table;
710         if (server_fd) {
711             /* new HTTP connection request ? */
712             if (poll_entry->revents & POLLIN)
713                 new_connection(server_fd, 0);
714             poll_entry++;
715         }
716         if (rtsp_server_fd) {
717             /* new RTSP connection request ? */
718             if (poll_entry->revents & POLLIN)
719                 new_connection(rtsp_server_fd, 1);
720         }
721     }
722 }
723
724 /* start waiting for a new HTTP/RTSP request */
725 static void start_wait_request(HTTPContext *c, int is_rtsp)
726 {
727     c->buffer_ptr = c->buffer;
728     c->buffer_end = c->buffer + c->buffer_size - 1; /* leave room for '\0' */
729
730     if (is_rtsp) {
731         c->timeout = cur_time + RTSP_REQUEST_TIMEOUT;
732         c->state = RTSPSTATE_WAIT_REQUEST;
733     } else {
734         c->timeout = cur_time + HTTP_REQUEST_TIMEOUT;
735         c->state = HTTPSTATE_WAIT_REQUEST;
736     }
737 }
738
739 static void http_send_too_busy_reply(int fd)
740 {
741     char buffer[300];
742     int len = snprintf(buffer, sizeof(buffer),
743                        "HTTP/1.0 200 Server too busy\r\n"
744                        "Content-type: text/html\r\n"
745                        "\r\n"
746                        "<html><head><title>Too busy</title></head><body>\r\n"
747                        "<p>The server is too busy to serve your request at this time.</p>\r\n"
748                        "<p>The number of current connections is %d, and this exceeds the limit of %d.</p>\r\n"
749                        "</body></html>\r\n",
750                        nb_connections, nb_max_connections);
751     send(fd, buffer, len, 0);
752 }
753
754
755 static void new_connection(int server_fd, int is_rtsp)
756 {
757     struct sockaddr_in from_addr;
758     int fd, len;
759     HTTPContext *c = NULL;
760
761     len = sizeof(from_addr);
762     fd = accept(server_fd, (struct sockaddr *)&from_addr,
763                 &len);
764     if (fd < 0) {
765         http_log("error during accept %s\n", strerror(errno));
766         return;
767     }
768     ff_socket_nonblock(fd, 1);
769
770     if (nb_connections >= nb_max_connections) {
771         http_send_too_busy_reply(fd);
772         goto fail;
773     }
774
775     /* add a new connection */
776     c = av_mallocz(sizeof(HTTPContext));
777     if (!c)
778         goto fail;
779
780     c->fd = fd;
781     c->poll_entry = NULL;
782     c->from_addr = from_addr;
783     c->buffer_size = IOBUFFER_INIT_SIZE;
784     c->buffer = av_malloc(c->buffer_size);
785     if (!c->buffer)
786         goto fail;
787
788     c->next = first_http_ctx;
789     first_http_ctx = c;
790     nb_connections++;
791
792     start_wait_request(c, is_rtsp);
793
794     return;
795
796  fail:
797     if (c) {
798         av_free(c->buffer);
799         av_free(c);
800     }
801     closesocket(fd);
802 }
803
804 static void close_connection(HTTPContext *c)
805 {
806     HTTPContext **cp, *c1;
807     int i, nb_streams;
808     AVFormatContext *ctx;
809     URLContext *h;
810     AVStream *st;
811
812     /* remove connection from list */
813     cp = &first_http_ctx;
814     while ((*cp) != NULL) {
815         c1 = *cp;
816         if (c1 == c)
817             *cp = c->next;
818         else
819             cp = &c1->next;
820     }
821
822     /* remove references, if any (XXX: do it faster) */
823     for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
824         if (c1->rtsp_c == c)
825             c1->rtsp_c = NULL;
826     }
827
828     /* remove connection associated resources */
829     if (c->fd >= 0)
830         closesocket(c->fd);
831     if (c->fmt_in) {
832         /* close each frame parser */
833         for(i=0;i<c->fmt_in->nb_streams;i++) {
834             st = c->fmt_in->streams[i];
835             if (st->codec->codec)
836                 avcodec_close(st->codec);
837         }
838         av_close_input_file(c->fmt_in);
839     }
840
841     /* free RTP output streams if any */
842     nb_streams = 0;
843     if (c->stream)
844         nb_streams = c->stream->nb_streams;
845
846     for(i=0;i<nb_streams;i++) {
847         ctx = c->rtp_ctx[i];
848         if (ctx) {
849             av_write_trailer(ctx);
850             av_metadata_free(&ctx->metadata);
851             av_free(ctx->streams[0]);
852             av_free(ctx);
853         }
854         h = c->rtp_handles[i];
855         if (h)
856             url_close(h);
857     }
858
859     ctx = &c->fmt_ctx;
860
861     if (!c->last_packet_sent && c->state == HTTPSTATE_SEND_DATA_TRAILER) {
862         if (ctx->oformat) {
863             /* prepare header */
864             if (url_open_dyn_buf(&ctx->pb) >= 0) {
865                 av_write_trailer(ctx);
866                 av_freep(&c->pb_buffer);
867                 url_close_dyn_buf(ctx->pb, &c->pb_buffer);
868             }
869         }
870     }
871
872     for(i=0; i<ctx->nb_streams; i++)
873         av_free(ctx->streams[i]);
874
875     if (c->stream && !c->post && c->stream->stream_type == STREAM_TYPE_LIVE)
876         current_bandwidth -= c->stream->bandwidth;
877
878     /* signal that there is no feed if we are the feeder socket */
879     if (c->state == HTTPSTATE_RECEIVE_DATA && c->stream) {
880         c->stream->feed_opened = 0;
881         close(c->feed_fd);
882     }
883
884     av_freep(&c->pb_buffer);
885     av_freep(&c->packet_buffer);
886     av_free(c->buffer);
887     av_free(c);
888     nb_connections--;
889 }
890
891 static int handle_connection(HTTPContext *c)
892 {
893     int len, ret;
894
895     switch(c->state) {
896     case HTTPSTATE_WAIT_REQUEST:
897     case RTSPSTATE_WAIT_REQUEST:
898         /* timeout ? */
899         if ((c->timeout - cur_time) < 0)
900             return -1;
901         if (c->poll_entry->revents & (POLLERR | POLLHUP))
902             return -1;
903
904         /* no need to read if no events */
905         if (!(c->poll_entry->revents & POLLIN))
906             return 0;
907         /* read the data */
908     read_loop:
909         len = recv(c->fd, c->buffer_ptr, 1, 0);
910         if (len < 0) {
911             if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
912                 ff_neterrno() != FF_NETERROR(EINTR))
913                 return -1;
914         } else if (len == 0) {
915             return -1;
916         } else {
917             /* search for end of request. */
918             uint8_t *ptr;
919             c->buffer_ptr += len;
920             ptr = c->buffer_ptr;
921             if ((ptr >= c->buffer + 2 && !memcmp(ptr-2, "\n\n", 2)) ||
922                 (ptr >= c->buffer + 4 && !memcmp(ptr-4, "\r\n\r\n", 4))) {
923                 /* request found : parse it and reply */
924                 if (c->state == HTTPSTATE_WAIT_REQUEST) {
925                     ret = http_parse_request(c);
926                 } else {
927                     ret = rtsp_parse_request(c);
928                 }
929                 if (ret < 0)
930                     return -1;
931             } else if (ptr >= c->buffer_end) {
932                 /* request too long: cannot do anything */
933                 return -1;
934             } else goto read_loop;
935         }
936         break;
937
938     case HTTPSTATE_SEND_HEADER:
939         if (c->poll_entry->revents & (POLLERR | POLLHUP))
940             return -1;
941
942         /* no need to write if no events */
943         if (!(c->poll_entry->revents & POLLOUT))
944             return 0;
945         len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
946         if (len < 0) {
947             if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
948                 ff_neterrno() != FF_NETERROR(EINTR)) {
949                 /* error : close connection */
950                 av_freep(&c->pb_buffer);
951                 return -1;
952             }
953         } else {
954             c->buffer_ptr += len;
955             if (c->stream)
956                 c->stream->bytes_served += len;
957             c->data_count += len;
958             if (c->buffer_ptr >= c->buffer_end) {
959                 av_freep(&c->pb_buffer);
960                 /* if error, exit */
961                 if (c->http_error)
962                     return -1;
963                 /* all the buffer was sent : synchronize to the incoming stream */
964                 c->state = HTTPSTATE_SEND_DATA_HEADER;
965                 c->buffer_ptr = c->buffer_end = c->buffer;
966             }
967         }
968         break;
969
970     case HTTPSTATE_SEND_DATA:
971     case HTTPSTATE_SEND_DATA_HEADER:
972     case HTTPSTATE_SEND_DATA_TRAILER:
973         /* for packetized output, we consider we can always write (the
974            input streams sets the speed). It may be better to verify
975            that we do not rely too much on the kernel queues */
976         if (!c->is_packetized) {
977             if (c->poll_entry->revents & (POLLERR | POLLHUP))
978                 return -1;
979
980             /* no need to read if no events */
981             if (!(c->poll_entry->revents & POLLOUT))
982                 return 0;
983         }
984         if (http_send_data(c) < 0)
985             return -1;
986         /* close connection if trailer sent */
987         if (c->state == HTTPSTATE_SEND_DATA_TRAILER)
988             return -1;
989         break;
990     case HTTPSTATE_RECEIVE_DATA:
991         /* no need to read if no events */
992         if (c->poll_entry->revents & (POLLERR | POLLHUP))
993             return -1;
994         if (!(c->poll_entry->revents & POLLIN))
995             return 0;
996         if (http_receive_data(c) < 0)
997             return -1;
998         break;
999     case HTTPSTATE_WAIT_FEED:
1000         /* no need to read if no events */
1001         if (c->poll_entry->revents & (POLLIN | POLLERR | POLLHUP))
1002             return -1;
1003
1004         /* nothing to do, we'll be waken up by incoming feed packets */
1005         break;
1006
1007     case RTSPSTATE_SEND_REPLY:
1008         if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1009             av_freep(&c->pb_buffer);
1010             return -1;
1011         }
1012         /* no need to write if no events */
1013         if (!(c->poll_entry->revents & POLLOUT))
1014             return 0;
1015         len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
1016         if (len < 0) {
1017             if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
1018                 ff_neterrno() != FF_NETERROR(EINTR)) {
1019                 /* error : close connection */
1020                 av_freep(&c->pb_buffer);
1021                 return -1;
1022             }
1023         } else {
1024             c->buffer_ptr += len;
1025             c->data_count += len;
1026             if (c->buffer_ptr >= c->buffer_end) {
1027                 /* all the buffer was sent : wait for a new request */
1028                 av_freep(&c->pb_buffer);
1029                 start_wait_request(c, 1);
1030             }
1031         }
1032         break;
1033     case RTSPSTATE_SEND_PACKET:
1034         if (c->poll_entry->revents & (POLLERR | POLLHUP)) {
1035             av_freep(&c->packet_buffer);
1036             return -1;
1037         }
1038         /* no need to write if no events */
1039         if (!(c->poll_entry->revents & POLLOUT))
1040             return 0;
1041         len = send(c->fd, c->packet_buffer_ptr,
1042                     c->packet_buffer_end - c->packet_buffer_ptr, 0);
1043         if (len < 0) {
1044             if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
1045                 ff_neterrno() != FF_NETERROR(EINTR)) {
1046                 /* error : close connection */
1047                 av_freep(&c->packet_buffer);
1048                 return -1;
1049             }
1050         } else {
1051             c->packet_buffer_ptr += len;
1052             if (c->packet_buffer_ptr >= c->packet_buffer_end) {
1053                 /* all the buffer was sent : wait for a new request */
1054                 av_freep(&c->packet_buffer);
1055                 c->state = RTSPSTATE_WAIT_REQUEST;
1056             }
1057         }
1058         break;
1059     case HTTPSTATE_READY:
1060         /* nothing to do */
1061         break;
1062     default:
1063         return -1;
1064     }
1065     return 0;
1066 }
1067
1068 static int extract_rates(char *rates, int ratelen, const char *request)
1069 {
1070     const char *p;
1071
1072     for (p = request; *p && *p != '\r' && *p != '\n'; ) {
1073         if (strncasecmp(p, "Pragma:", 7) == 0) {
1074             const char *q = p + 7;
1075
1076             while (*q && *q != '\n' && isspace(*q))
1077                 q++;
1078
1079             if (strncasecmp(q, "stream-switch-entry=", 20) == 0) {
1080                 int stream_no;
1081                 int rate_no;
1082
1083                 q += 20;
1084
1085                 memset(rates, 0xff, ratelen);
1086
1087                 while (1) {
1088                     while (*q && *q != '\n' && *q != ':')
1089                         q++;
1090
1091                     if (sscanf(q, ":%d:%d", &stream_no, &rate_no) != 2)
1092                         break;
1093
1094                     stream_no--;
1095                     if (stream_no < ratelen && stream_no >= 0)
1096                         rates[stream_no] = rate_no;
1097
1098                     while (*q && *q != '\n' && !isspace(*q))
1099                         q++;
1100                 }
1101
1102                 return 1;
1103             }
1104         }
1105         p = strchr(p, '\n');
1106         if (!p)
1107             break;
1108
1109         p++;
1110     }
1111
1112     return 0;
1113 }
1114
1115 static int find_stream_in_feed(FFStream *feed, AVCodecContext *codec, int bit_rate)
1116 {
1117     int i;
1118     int best_bitrate = 100000000;
1119     int best = -1;
1120
1121     for (i = 0; i < feed->nb_streams; i++) {
1122         AVCodecContext *feed_codec = feed->streams[i]->codec;
1123
1124         if (feed_codec->codec_id != codec->codec_id ||
1125             feed_codec->sample_rate != codec->sample_rate ||
1126             feed_codec->width != codec->width ||
1127             feed_codec->height != codec->height)
1128             continue;
1129
1130         /* Potential stream */
1131
1132         /* We want the fastest stream less than bit_rate, or the slowest
1133          * faster than bit_rate
1134          */
1135
1136         if (feed_codec->bit_rate <= bit_rate) {
1137             if (best_bitrate > bit_rate || feed_codec->bit_rate > best_bitrate) {
1138                 best_bitrate = feed_codec->bit_rate;
1139                 best = i;
1140             }
1141         } else {
1142             if (feed_codec->bit_rate < best_bitrate) {
1143                 best_bitrate = feed_codec->bit_rate;
1144                 best = i;
1145             }
1146         }
1147     }
1148
1149     return best;
1150 }
1151
1152 static int modify_current_stream(HTTPContext *c, char *rates)
1153 {
1154     int i;
1155     FFStream *req = c->stream;
1156     int action_required = 0;
1157
1158     /* Not much we can do for a feed */
1159     if (!req->feed)
1160         return 0;
1161
1162     for (i = 0; i < req->nb_streams; i++) {
1163         AVCodecContext *codec = req->streams[i]->codec;
1164
1165         switch(rates[i]) {
1166             case 0:
1167                 c->switch_feed_streams[i] = req->feed_streams[i];
1168                 break;
1169             case 1:
1170                 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 2);
1171                 break;
1172             case 2:
1173                 /* Wants off or slow */
1174                 c->switch_feed_streams[i] = find_stream_in_feed(req->feed, codec, codec->bit_rate / 4);
1175 #ifdef WANTS_OFF
1176                 /* This doesn't work well when it turns off the only stream! */
1177                 c->switch_feed_streams[i] = -2;
1178                 c->feed_streams[i] = -2;
1179 #endif
1180                 break;
1181         }
1182
1183         if (c->switch_feed_streams[i] >= 0 && c->switch_feed_streams[i] != c->feed_streams[i])
1184             action_required = 1;
1185     }
1186
1187     return action_required;
1188 }
1189
1190
1191 static void do_switch_stream(HTTPContext *c, int i)
1192 {
1193     if (c->switch_feed_streams[i] >= 0) {
1194 #ifdef PHILIP
1195         c->feed_streams[i] = c->switch_feed_streams[i];
1196 #endif
1197
1198         /* Now update the stream */
1199     }
1200     c->switch_feed_streams[i] = -1;
1201 }
1202
1203 /* XXX: factorize in utils.c ? */
1204 /* XXX: take care with different space meaning */
1205 static void skip_spaces(const char **pp)
1206 {
1207     const char *p;
1208     p = *pp;
1209     while (*p == ' ' || *p == '\t')
1210         p++;
1211     *pp = p;
1212 }
1213
1214 static void get_word(char *buf, int buf_size, const char **pp)
1215 {
1216     const char *p;
1217     char *q;
1218
1219     p = *pp;
1220     skip_spaces(&p);
1221     q = buf;
1222     while (!isspace(*p) && *p != '\0') {
1223         if ((q - buf) < buf_size - 1)
1224             *q++ = *p;
1225         p++;
1226     }
1227     if (buf_size > 0)
1228         *q = '\0';
1229     *pp = p;
1230 }
1231
1232 static void get_arg(char *buf, int buf_size, const char **pp)
1233 {
1234     const char *p;
1235     char *q;
1236     int quote;
1237
1238     p = *pp;
1239     while (isspace(*p)) p++;
1240     q = buf;
1241     quote = 0;
1242     if (*p == '\"' || *p == '\'')
1243         quote = *p++;
1244     for(;;) {
1245         if (quote) {
1246             if (*p == quote)
1247                 break;
1248         } else {
1249             if (isspace(*p))
1250                 break;
1251         }
1252         if (*p == '\0')
1253             break;
1254         if ((q - buf) < buf_size - 1)
1255             *q++ = *p;
1256         p++;
1257     }
1258     *q = '\0';
1259     if (quote && *p == quote)
1260         p++;
1261     *pp = p;
1262 }
1263
1264 static void parse_acl_row(FFStream *stream, FFStream* feed, IPAddressACL *ext_acl,
1265                          const char *p, const char *filename, int line_num)
1266 {
1267     char arg[1024];
1268     IPAddressACL acl;
1269     int errors = 0;
1270
1271     get_arg(arg, sizeof(arg), &p);
1272     if (strcasecmp(arg, "allow") == 0)
1273         acl.action = IP_ALLOW;
1274     else if (strcasecmp(arg, "deny") == 0)
1275         acl.action = IP_DENY;
1276     else {
1277         fprintf(stderr, "%s:%d: ACL action '%s' is not ALLOW or DENY\n",
1278                 filename, line_num, arg);
1279         errors++;
1280     }
1281
1282     get_arg(arg, sizeof(arg), &p);
1283
1284     if (resolve_host(&acl.first, arg) != 0) {
1285         fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1286                 filename, line_num, arg);
1287         errors++;
1288     } else
1289         acl.last = acl.first;
1290
1291     get_arg(arg, sizeof(arg), &p);
1292
1293     if (arg[0]) {
1294         if (resolve_host(&acl.last, arg) != 0) {
1295             fprintf(stderr, "%s:%d: ACL refers to invalid host or ip address '%s'\n",
1296                     filename, line_num, arg);
1297             errors++;
1298         }
1299     }
1300
1301     if (!errors) {
1302         IPAddressACL *nacl = av_mallocz(sizeof(*nacl));
1303         IPAddressACL **naclp = 0;
1304
1305         acl.next = 0;
1306         *nacl = acl;
1307
1308         if (stream)
1309             naclp = &stream->acl;
1310         else if (feed)
1311             naclp = &feed->acl;
1312         else if (ext_acl)
1313             naclp = &ext_acl;
1314         else {
1315             fprintf(stderr, "%s:%d: ACL found not in <stream> or <feed>\n",
1316                     filename, line_num);
1317             errors++;
1318         }
1319
1320         if (naclp) {
1321             while (*naclp)
1322                 naclp = &(*naclp)->next;
1323
1324             *naclp = nacl;
1325         }
1326     }
1327 }
1328
1329
1330 static IPAddressACL* parse_dynamic_acl(FFStream *stream, HTTPContext *c)
1331 {
1332     FILE* f;
1333     char line[1024];
1334     char  cmd[1024];
1335     IPAddressACL *acl = NULL;
1336     int line_num = 0;
1337     const char *p;
1338
1339     f = fopen(stream->dynamic_acl, "r");
1340     if (!f) {
1341         perror(stream->dynamic_acl);
1342         return NULL;
1343     }
1344
1345     acl = av_mallocz(sizeof(IPAddressACL));
1346
1347     /* Build ACL */
1348     for(;;) {
1349         if (fgets(line, sizeof(line), f) == NULL)
1350             break;
1351         line_num++;
1352         p = line;
1353         while (isspace(*p))
1354             p++;
1355         if (*p == '\0' || *p == '#')
1356             continue;
1357         get_arg(cmd, sizeof(cmd), &p);
1358
1359         if (!strcasecmp(cmd, "ACL"))
1360             parse_acl_row(NULL, NULL, acl, p, stream->dynamic_acl, line_num);
1361     }
1362     fclose(f);
1363     return acl;
1364 }
1365
1366
1367 static void free_acl_list(IPAddressACL *in_acl)
1368 {
1369     IPAddressACL *pacl,*pacl2;
1370
1371     pacl = in_acl;
1372     while(pacl) {
1373         pacl2 = pacl;
1374         pacl = pacl->next;
1375         av_freep(pacl2);
1376     }
1377 }
1378
1379 static int validate_acl_list(IPAddressACL *in_acl, HTTPContext *c)
1380 {
1381     enum IPAddressAction last_action = IP_DENY;
1382     IPAddressACL *acl;
1383     struct in_addr *src = &c->from_addr.sin_addr;
1384     unsigned long src_addr = src->s_addr;
1385
1386     for (acl = in_acl; acl; acl = acl->next) {
1387         if (src_addr >= acl->first.s_addr && src_addr <= acl->last.s_addr)
1388             return (acl->action == IP_ALLOW) ? 1 : 0;
1389         last_action = acl->action;
1390     }
1391
1392     /* Nothing matched, so return not the last action */
1393     return (last_action == IP_DENY) ? 1 : 0;
1394 }
1395
1396 static int validate_acl(FFStream *stream, HTTPContext *c)
1397 {
1398     int ret = 0;
1399     IPAddressACL *acl;
1400
1401
1402     /* if stream->acl is null validate_acl_list will return 1 */
1403     ret = validate_acl_list(stream->acl, c);
1404
1405     if (stream->dynamic_acl[0]) {
1406         acl = parse_dynamic_acl(stream, c);
1407
1408         ret = validate_acl_list(acl, c);
1409
1410         free_acl_list(acl);
1411     }
1412
1413     return ret;
1414 }
1415
1416 /* compute the real filename of a file by matching it without its
1417    extensions to all the stream filenames */
1418 static void compute_real_filename(char *filename, int max_size)
1419 {
1420     char file1[1024];
1421     char file2[1024];
1422     char *p;
1423     FFStream *stream;
1424
1425     /* compute filename by matching without the file extensions */
1426     av_strlcpy(file1, filename, sizeof(file1));
1427     p = strrchr(file1, '.');
1428     if (p)
1429         *p = '\0';
1430     for(stream = first_stream; stream != NULL; stream = stream->next) {
1431         av_strlcpy(file2, stream->filename, sizeof(file2));
1432         p = strrchr(file2, '.');
1433         if (p)
1434             *p = '\0';
1435         if (!strcmp(file1, file2)) {
1436             av_strlcpy(filename, stream->filename, max_size);
1437             break;
1438         }
1439     }
1440 }
1441
1442 enum RedirType {
1443     REDIR_NONE,
1444     REDIR_ASX,
1445     REDIR_RAM,
1446     REDIR_ASF,
1447     REDIR_RTSP,
1448     REDIR_SDP,
1449 };
1450
1451 /* parse http request and prepare header */
1452 static int http_parse_request(HTTPContext *c)
1453 {
1454     char *p;
1455     enum RedirType redir_type;
1456     char cmd[32];
1457     char info[1024], filename[1024];
1458     char url[1024], *q;
1459     char protocol[32];
1460     char msg[1024];
1461     const char *mime_type;
1462     FFStream *stream;
1463     int i;
1464     char ratebuf[32];
1465     char *useragent = 0;
1466
1467     p = c->buffer;
1468     get_word(cmd, sizeof(cmd), (const char **)&p);
1469     av_strlcpy(c->method, cmd, sizeof(c->method));
1470
1471     if (!strcmp(cmd, "GET"))
1472         c->post = 0;
1473     else if (!strcmp(cmd, "POST"))
1474         c->post = 1;
1475     else
1476         return -1;
1477
1478     get_word(url, sizeof(url), (const char **)&p);
1479     av_strlcpy(c->url, url, sizeof(c->url));
1480
1481     get_word(protocol, sizeof(protocol), (const char **)&p);
1482     if (strcmp(protocol, "HTTP/1.0") && strcmp(protocol, "HTTP/1.1"))
1483         return -1;
1484
1485     av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
1486
1487     if (ffserver_debug)
1488         http_log("%s - - New connection: %s %s\n", inet_ntoa(c->from_addr.sin_addr), cmd, url);
1489
1490     /* find the filename and the optional info string in the request */
1491     p = strchr(url, '?');
1492     if (p) {
1493         av_strlcpy(info, p, sizeof(info));
1494         *p = '\0';
1495     } else
1496         info[0] = '\0';
1497
1498     av_strlcpy(filename, url + ((*url == '/') ? 1 : 0), sizeof(filename)-1);
1499
1500     for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1501         if (strncasecmp(p, "User-Agent:", 11) == 0) {
1502             useragent = p + 11;
1503             if (*useragent && *useragent != '\n' && isspace(*useragent))
1504                 useragent++;
1505             break;
1506         }
1507         p = strchr(p, '\n');
1508         if (!p)
1509             break;
1510
1511         p++;
1512     }
1513
1514     redir_type = REDIR_NONE;
1515     if (av_match_ext(filename, "asx")) {
1516         redir_type = REDIR_ASX;
1517         filename[strlen(filename)-1] = 'f';
1518     } else if (av_match_ext(filename, "asf") &&
1519         (!useragent || strncasecmp(useragent, "NSPlayer", 8) != 0)) {
1520         /* if this isn't WMP or lookalike, return the redirector file */
1521         redir_type = REDIR_ASF;
1522     } else if (av_match_ext(filename, "rpm,ram")) {
1523         redir_type = REDIR_RAM;
1524         strcpy(filename + strlen(filename)-2, "m");
1525     } else if (av_match_ext(filename, "rtsp")) {
1526         redir_type = REDIR_RTSP;
1527         compute_real_filename(filename, sizeof(filename) - 1);
1528     } else if (av_match_ext(filename, "sdp")) {
1529         redir_type = REDIR_SDP;
1530         compute_real_filename(filename, sizeof(filename) - 1);
1531     }
1532
1533     // "redirect" / request to index.html
1534     if (!strlen(filename))
1535         av_strlcpy(filename, "index.html", sizeof(filename) - 1);
1536
1537     stream = first_stream;
1538     while (stream != NULL) {
1539         if (!strcmp(stream->filename, filename) && validate_acl(stream, c))
1540             break;
1541         stream = stream->next;
1542     }
1543     if (stream == NULL) {
1544         snprintf(msg, sizeof(msg), "File '%s' not found", url);
1545         http_log("File '%s' not found\n", url);
1546         goto send_error;
1547     }
1548
1549     c->stream = stream;
1550     memcpy(c->feed_streams, stream->feed_streams, sizeof(c->feed_streams));
1551     memset(c->switch_feed_streams, -1, sizeof(c->switch_feed_streams));
1552
1553     if (stream->stream_type == STREAM_TYPE_REDIRECT) {
1554         c->http_error = 301;
1555         q = c->buffer;
1556         q += snprintf(q, c->buffer_size,
1557                       "HTTP/1.0 301 Moved\r\n"
1558                       "Location: %s\r\n"
1559                       "Content-type: text/html\r\n"
1560                       "\r\n"
1561                       "<html><head><title>Moved</title></head><body>\r\n"
1562                       "You should be <a href=\"%s\">redirected</a>.\r\n"
1563                       "</body></html>\r\n", stream->feed_filename, stream->feed_filename);
1564         /* prepare output buffer */
1565         c->buffer_ptr = c->buffer;
1566         c->buffer_end = q;
1567         c->state = HTTPSTATE_SEND_HEADER;
1568         return 0;
1569     }
1570
1571     /* If this is WMP, get the rate information */
1572     if (extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1573         if (modify_current_stream(c, ratebuf)) {
1574             for (i = 0; i < FF_ARRAY_ELEMS(c->feed_streams); i++) {
1575                 if (c->switch_feed_streams[i] >= 0)
1576                     do_switch_stream(c, i);
1577             }
1578         }
1579     }
1580
1581     if (c->post == 0 && stream->stream_type == STREAM_TYPE_LIVE)
1582         current_bandwidth += stream->bandwidth;
1583
1584     /* If already streaming this feed, do not let start another feeder. */
1585     if (stream->feed_opened) {
1586         snprintf(msg, sizeof(msg), "This feed is already being received.");
1587         http_log("Feed '%s' already being received\n", stream->feed_filename);
1588         goto send_error;
1589     }
1590
1591     if (c->post == 0 && max_bandwidth < current_bandwidth) {
1592         c->http_error = 200;
1593         q = c->buffer;
1594         q += snprintf(q, c->buffer_size,
1595                       "HTTP/1.0 200 Server too busy\r\n"
1596                       "Content-type: text/html\r\n"
1597                       "\r\n"
1598                       "<html><head><title>Too busy</title></head><body>\r\n"
1599                       "<p>The server is too busy to serve your request at this time.</p>\r\n"
1600                       "<p>The bandwidth being served (including your stream) is %"PRIu64"kbit/sec, "
1601                       "and this exceeds the limit of %"PRIu64"kbit/sec.</p>\r\n"
1602                       "</body></html>\r\n", current_bandwidth, max_bandwidth);
1603         /* prepare output buffer */
1604         c->buffer_ptr = c->buffer;
1605         c->buffer_end = q;
1606         c->state = HTTPSTATE_SEND_HEADER;
1607         return 0;
1608     }
1609
1610     if (redir_type != REDIR_NONE) {
1611         char *hostinfo = 0;
1612
1613         for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1614             if (strncasecmp(p, "Host:", 5) == 0) {
1615                 hostinfo = p + 5;
1616                 break;
1617             }
1618             p = strchr(p, '\n');
1619             if (!p)
1620                 break;
1621
1622             p++;
1623         }
1624
1625         if (hostinfo) {
1626             char *eoh;
1627             char hostbuf[260];
1628
1629             while (isspace(*hostinfo))
1630                 hostinfo++;
1631
1632             eoh = strchr(hostinfo, '\n');
1633             if (eoh) {
1634                 if (eoh[-1] == '\r')
1635                     eoh--;
1636
1637                 if (eoh - hostinfo < sizeof(hostbuf) - 1) {
1638                     memcpy(hostbuf, hostinfo, eoh - hostinfo);
1639                     hostbuf[eoh - hostinfo] = 0;
1640
1641                     c->http_error = 200;
1642                     q = c->buffer;
1643                     switch(redir_type) {
1644                     case REDIR_ASX:
1645                         q += snprintf(q, c->buffer_size,
1646                                       "HTTP/1.0 200 ASX Follows\r\n"
1647                                       "Content-type: video/x-ms-asf\r\n"
1648                                       "\r\n"
1649                                       "<ASX Version=\"3\">\r\n"
1650                                       //"<!-- Autogenerated by ffserver -->\r\n"
1651                                       "<ENTRY><REF HREF=\"http://%s/%s%s\"/></ENTRY>\r\n"
1652                                       "</ASX>\r\n", hostbuf, filename, info);
1653                         break;
1654                     case REDIR_RAM:
1655                         q += snprintf(q, c->buffer_size,
1656                                       "HTTP/1.0 200 RAM Follows\r\n"
1657                                       "Content-type: audio/x-pn-realaudio\r\n"
1658                                       "\r\n"
1659                                       "# Autogenerated by ffserver\r\n"
1660                                       "http://%s/%s%s\r\n", hostbuf, filename, info);
1661                         break;
1662                     case REDIR_ASF:
1663                         q += snprintf(q, c->buffer_size,
1664                                       "HTTP/1.0 200 ASF Redirect follows\r\n"
1665                                       "Content-type: video/x-ms-asf\r\n"
1666                                       "\r\n"
1667                                       "[Reference]\r\n"
1668                                       "Ref1=http://%s/%s%s\r\n", hostbuf, filename, info);
1669                         break;
1670                     case REDIR_RTSP:
1671                         {
1672                             char hostname[256], *p;
1673                             /* extract only hostname */
1674                             av_strlcpy(hostname, hostbuf, sizeof(hostname));
1675                             p = strrchr(hostname, ':');
1676                             if (p)
1677                                 *p = '\0';
1678                             q += snprintf(q, c->buffer_size,
1679                                           "HTTP/1.0 200 RTSP Redirect follows\r\n"
1680                                           /* XXX: incorrect mime type ? */
1681                                           "Content-type: application/x-rtsp\r\n"
1682                                           "\r\n"
1683                                           "rtsp://%s:%d/%s\r\n", hostname, ntohs(my_rtsp_addr.sin_port), filename);
1684                         }
1685                         break;
1686                     case REDIR_SDP:
1687                         {
1688                             uint8_t *sdp_data;
1689                             int sdp_data_size, len;
1690                             struct sockaddr_in my_addr;
1691
1692                             q += snprintf(q, c->buffer_size,
1693                                           "HTTP/1.0 200 OK\r\n"
1694                                           "Content-type: application/sdp\r\n"
1695                                           "\r\n");
1696
1697                             len = sizeof(my_addr);
1698                             getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
1699
1700                             /* XXX: should use a dynamic buffer */
1701                             sdp_data_size = prepare_sdp_description(stream,
1702                                                                     &sdp_data,
1703                                                                     my_addr.sin_addr);
1704                             if (sdp_data_size > 0) {
1705                                 memcpy(q, sdp_data, sdp_data_size);
1706                                 q += sdp_data_size;
1707                                 *q = '\0';
1708                                 av_free(sdp_data);
1709                             }
1710                         }
1711                         break;
1712                     default:
1713                         abort();
1714                         break;
1715                     }
1716
1717                     /* prepare output buffer */
1718                     c->buffer_ptr = c->buffer;
1719                     c->buffer_end = q;
1720                     c->state = HTTPSTATE_SEND_HEADER;
1721                     return 0;
1722                 }
1723             }
1724         }
1725
1726         snprintf(msg, sizeof(msg), "ASX/RAM file not handled");
1727         goto send_error;
1728     }
1729
1730     stream->conns_served++;
1731
1732     /* XXX: add there authenticate and IP match */
1733
1734     if (c->post) {
1735         /* if post, it means a feed is being sent */
1736         if (!stream->is_feed) {
1737             /* However it might be a status report from WMP! Let us log the
1738              * data as it might come in handy one day. */
1739             char *logline = 0;
1740             int client_id = 0;
1741
1742             for (p = c->buffer; *p && *p != '\r' && *p != '\n'; ) {
1743                 if (strncasecmp(p, "Pragma: log-line=", 17) == 0) {
1744                     logline = p;
1745                     break;
1746                 }
1747                 if (strncasecmp(p, "Pragma: client-id=", 18) == 0)
1748                     client_id = strtol(p + 18, 0, 10);
1749                 p = strchr(p, '\n');
1750                 if (!p)
1751                     break;
1752
1753                 p++;
1754             }
1755
1756             if (logline) {
1757                 char *eol = strchr(logline, '\n');
1758
1759                 logline += 17;
1760
1761                 if (eol) {
1762                     if (eol[-1] == '\r')
1763                         eol--;
1764                     http_log("%.*s\n", (int) (eol - logline), logline);
1765                     c->suppress_log = 1;
1766                 }
1767             }
1768
1769 #ifdef DEBUG_WMP
1770             http_log("\nGot request:\n%s\n", c->buffer);
1771 #endif
1772
1773             if (client_id && extract_rates(ratebuf, sizeof(ratebuf), c->buffer)) {
1774                 HTTPContext *wmpc;
1775
1776                 /* Now we have to find the client_id */
1777                 for (wmpc = first_http_ctx; wmpc; wmpc = wmpc->next) {
1778                     if (wmpc->wmp_client_id == client_id)
1779                         break;
1780                 }
1781
1782                 if (wmpc && modify_current_stream(wmpc, ratebuf))
1783                     wmpc->switch_pending = 1;
1784             }
1785
1786             snprintf(msg, sizeof(msg), "POST command not handled");
1787             c->stream = 0;
1788             goto send_error;
1789         }
1790         if (http_start_receive_data(c) < 0) {
1791             snprintf(msg, sizeof(msg), "could not open feed");
1792             goto send_error;
1793         }
1794         c->http_error = 0;
1795         c->state = HTTPSTATE_RECEIVE_DATA;
1796         return 0;
1797     }
1798
1799 #ifdef DEBUG_WMP
1800     if (strcmp(stream->filename + strlen(stream->filename) - 4, ".asf") == 0)
1801         http_log("\nGot request:\n%s\n", c->buffer);
1802 #endif
1803
1804     if (c->stream->stream_type == STREAM_TYPE_STATUS)
1805         goto send_status;
1806
1807     /* open input stream */
1808     if (open_input_stream(c, info) < 0) {
1809         snprintf(msg, sizeof(msg), "Input stream corresponding to '%s' not found", url);
1810         goto send_error;
1811     }
1812
1813     /* prepare http header */
1814     q = c->buffer;
1815     q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "HTTP/1.0 200 OK\r\n");
1816     mime_type = c->stream->fmt->mime_type;
1817     if (!mime_type)
1818         mime_type = "application/x-octet-stream";
1819     q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Pragma: no-cache\r\n");
1820
1821     /* for asf, we need extra headers */
1822     if (!strcmp(c->stream->fmt->name,"asf_stream")) {
1823         /* Need to allocate a client id */
1824
1825         c->wmp_client_id = av_lfg_get(&random_state);
1826
1827         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);
1828     }
1829     q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "Content-Type: %s\r\n", mime_type);
1830     q += snprintf(q, q - (char *) c->buffer + c->buffer_size, "\r\n");
1831
1832     /* prepare output buffer */
1833     c->http_error = 0;
1834     c->buffer_ptr = c->buffer;
1835     c->buffer_end = q;
1836     c->state = HTTPSTATE_SEND_HEADER;
1837     return 0;
1838  send_error:
1839     c->http_error = 404;
1840     q = c->buffer;
1841     q += snprintf(q, c->buffer_size,
1842                   "HTTP/1.0 404 Not Found\r\n"
1843                   "Content-type: text/html\r\n"
1844                   "\r\n"
1845                   "<html>\n"
1846                   "<head><title>404 Not Found</title></head>\n"
1847                   "<body>%s</body>\n"
1848                   "</html>\n", msg);
1849     /* prepare output buffer */
1850     c->buffer_ptr = c->buffer;
1851     c->buffer_end = q;
1852     c->state = HTTPSTATE_SEND_HEADER;
1853     return 0;
1854  send_status:
1855     compute_status(c);
1856     c->http_error = 200; /* horrible : we use this value to avoid
1857                             going to the send data state */
1858     c->state = HTTPSTATE_SEND_HEADER;
1859     return 0;
1860 }
1861
1862 static void fmt_bytecount(ByteIOContext *pb, int64_t count)
1863 {
1864     static const char *suffix = " kMGTP";
1865     const char *s;
1866
1867     for (s = suffix; count >= 100000 && s[1]; count /= 1000, s++);
1868
1869     url_fprintf(pb, "%"PRId64"%c", count, *s);
1870 }
1871
1872 static void compute_status(HTTPContext *c)
1873 {
1874     HTTPContext *c1;
1875     FFStream *stream;
1876     char *p;
1877     time_t ti;
1878     int i, len;
1879     ByteIOContext *pb;
1880
1881     if (url_open_dyn_buf(&pb) < 0) {
1882         /* XXX: return an error ? */
1883         c->buffer_ptr = c->buffer;
1884         c->buffer_end = c->buffer;
1885         return;
1886     }
1887
1888     url_fprintf(pb, "HTTP/1.0 200 OK\r\n");
1889     url_fprintf(pb, "Content-type: %s\r\n", "text/html");
1890     url_fprintf(pb, "Pragma: no-cache\r\n");
1891     url_fprintf(pb, "\r\n");
1892
1893     url_fprintf(pb, "<html><head><title>%s Status</title>\n", program_name);
1894     if (c->stream->feed_filename[0])
1895         url_fprintf(pb, "<link rel=\"shortcut icon\" href=\"%s\">\n", c->stream->feed_filename);
1896     url_fprintf(pb, "</head>\n<body>");
1897     url_fprintf(pb, "<h1>%s Status</h1>\n", program_name);
1898     /* format status */
1899     url_fprintf(pb, "<h2>Available Streams</h2>\n");
1900     url_fprintf(pb, "<table cellspacing=0 cellpadding=4>\n");
1901     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");
1902     stream = first_stream;
1903     while (stream != NULL) {
1904         char sfilename[1024];
1905         char *eosf;
1906
1907         if (stream->feed != stream) {
1908             av_strlcpy(sfilename, stream->filename, sizeof(sfilename) - 10);
1909             eosf = sfilename + strlen(sfilename);
1910             if (eosf - sfilename >= 4) {
1911                 if (strcmp(eosf - 4, ".asf") == 0)
1912                     strcpy(eosf - 4, ".asx");
1913                 else if (strcmp(eosf - 3, ".rm") == 0)
1914                     strcpy(eosf - 3, ".ram");
1915                 else if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
1916                     /* generate a sample RTSP director if
1917                        unicast. Generate an SDP redirector if
1918                        multicast */
1919                     eosf = strrchr(sfilename, '.');
1920                     if (!eosf)
1921                         eosf = sfilename + strlen(sfilename);
1922                     if (stream->is_multicast)
1923                         strcpy(eosf, ".sdp");
1924                     else
1925                         strcpy(eosf, ".rtsp");
1926                 }
1927             }
1928
1929             url_fprintf(pb, "<tr><td><a href=\"/%s\">%s</a> ",
1930                          sfilename, stream->filename);
1931             url_fprintf(pb, "<td align=right> %d <td align=right> ",
1932                         stream->conns_served);
1933             fmt_bytecount(pb, stream->bytes_served);
1934             switch(stream->stream_type) {
1935             case STREAM_TYPE_LIVE: {
1936                     int audio_bit_rate = 0;
1937                     int video_bit_rate = 0;
1938                     const char *audio_codec_name = "";
1939                     const char *video_codec_name = "";
1940                     const char *audio_codec_name_extra = "";
1941                     const char *video_codec_name_extra = "";
1942
1943                     for(i=0;i<stream->nb_streams;i++) {
1944                         AVStream *st = stream->streams[i];
1945                         AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
1946                         switch(st->codec->codec_type) {
1947                         case AVMEDIA_TYPE_AUDIO:
1948                             audio_bit_rate += st->codec->bit_rate;
1949                             if (codec) {
1950                                 if (*audio_codec_name)
1951                                     audio_codec_name_extra = "...";
1952                                 audio_codec_name = codec->name;
1953                             }
1954                             break;
1955                         case AVMEDIA_TYPE_VIDEO:
1956                             video_bit_rate += st->codec->bit_rate;
1957                             if (codec) {
1958                                 if (*video_codec_name)
1959                                     video_codec_name_extra = "...";
1960                                 video_codec_name = codec->name;
1961                             }
1962                             break;
1963                         case AVMEDIA_TYPE_DATA:
1964                             video_bit_rate += st->codec->bit_rate;
1965                             break;
1966                         default:
1967                             abort();
1968                         }
1969                     }
1970                     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",
1971                                  stream->fmt->name,
1972                                  stream->bandwidth,
1973                                  video_bit_rate / 1000, video_codec_name, video_codec_name_extra,
1974                                  audio_bit_rate / 1000, audio_codec_name, audio_codec_name_extra);
1975                     if (stream->feed)
1976                         url_fprintf(pb, "<td>%s", stream->feed->filename);
1977                     else
1978                         url_fprintf(pb, "<td>%s", stream->feed_filename);
1979                     url_fprintf(pb, "\n");
1980                 }
1981                 break;
1982             default:
1983                 url_fprintf(pb, "<td align=center> - <td align=right> - <td align=right> - <td><td align=right> - <td>\n");
1984                 break;
1985             }
1986         }
1987         stream = stream->next;
1988     }
1989     url_fprintf(pb, "</table>\n");
1990
1991     stream = first_stream;
1992     while (stream != NULL) {
1993         if (stream->feed == stream) {
1994             url_fprintf(pb, "<h2>Feed %s</h2>", stream->filename);
1995             if (stream->pid) {
1996                 url_fprintf(pb, "Running as pid %d.\n", stream->pid);
1997
1998 #if defined(linux) && !defined(CONFIG_NOCUTILS)
1999                 {
2000                     FILE *pid_stat;
2001                     char ps_cmd[64];
2002
2003                     /* This is somewhat linux specific I guess */
2004                     snprintf(ps_cmd, sizeof(ps_cmd),
2005                              "ps -o \"%%cpu,cputime\" --no-headers %d",
2006                              stream->pid);
2007
2008                     pid_stat = popen(ps_cmd, "r");
2009                     if (pid_stat) {
2010                         char cpuperc[10];
2011                         char cpuused[64];
2012
2013                         if (fscanf(pid_stat, "%10s %64s", cpuperc,
2014                                    cpuused) == 2) {
2015                             url_fprintf(pb, "Currently using %s%% of the cpu. Total time used %s.\n",
2016                                          cpuperc, cpuused);
2017                         }
2018                         fclose(pid_stat);
2019                     }
2020                 }
2021 #endif
2022
2023                 url_fprintf(pb, "<p>");
2024             }
2025             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");
2026
2027             for (i = 0; i < stream->nb_streams; i++) {
2028                 AVStream *st = stream->streams[i];
2029                 AVCodec *codec = avcodec_find_encoder(st->codec->codec_id);
2030                 const char *type = "unknown";
2031                 char parameters[64];
2032
2033                 parameters[0] = 0;
2034
2035                 switch(st->codec->codec_type) {
2036                 case AVMEDIA_TYPE_AUDIO:
2037                     type = "audio";
2038                     snprintf(parameters, sizeof(parameters), "%d channel(s), %d Hz", st->codec->channels, st->codec->sample_rate);
2039                     break;
2040                 case AVMEDIA_TYPE_VIDEO:
2041                     type = "video";
2042                     snprintf(parameters, sizeof(parameters), "%dx%d, q=%d-%d, fps=%d", st->codec->width, st->codec->height,
2043                                 st->codec->qmin, st->codec->qmax, st->codec->time_base.den / st->codec->time_base.num);
2044                     break;
2045                 default:
2046                     abort();
2047                 }
2048                 url_fprintf(pb, "<tr><td align=right>%d<td>%s<td align=right>%d<td>%s<td>%s\n",
2049                         i, type, st->codec->bit_rate/1000, codec ? codec->name : "", parameters);
2050             }
2051             url_fprintf(pb, "</table>\n");
2052
2053         }
2054         stream = stream->next;
2055     }
2056
2057     /* connection status */
2058     url_fprintf(pb, "<h2>Connection Status</h2>\n");
2059
2060     url_fprintf(pb, "Number of connections: %d / %d<br>\n",
2061                  nb_connections, nb_max_connections);
2062
2063     url_fprintf(pb, "Bandwidth in use: %"PRIu64"k / %"PRIu64"k<br>\n",
2064                  current_bandwidth, max_bandwidth);
2065
2066     url_fprintf(pb, "<table>\n");
2067     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");
2068     c1 = first_http_ctx;
2069     i = 0;
2070     while (c1 != NULL) {
2071         int bitrate;
2072         int j;
2073
2074         bitrate = 0;
2075         if (c1->stream) {
2076             for (j = 0; j < c1->stream->nb_streams; j++) {
2077                 if (!c1->stream->feed)
2078                     bitrate += c1->stream->streams[j]->codec->bit_rate;
2079                 else if (c1->feed_streams[j] >= 0)
2080                     bitrate += c1->stream->feed->streams[c1->feed_streams[j]]->codec->bit_rate;
2081             }
2082         }
2083
2084         i++;
2085         p = inet_ntoa(c1->from_addr.sin_addr);
2086         url_fprintf(pb, "<tr><td><b>%d</b><td>%s%s<td>%s<td>%s<td>%s<td align=right>",
2087                     i,
2088                     c1->stream ? c1->stream->filename : "",
2089                     c1->state == HTTPSTATE_RECEIVE_DATA ? "(input)" : "",
2090                     p,
2091                     c1->protocol,
2092                     http_state[c1->state]);
2093         fmt_bytecount(pb, bitrate);
2094         url_fprintf(pb, "<td align=right>");
2095         fmt_bytecount(pb, compute_datarate(&c1->datarate, c1->data_count) * 8);
2096         url_fprintf(pb, "<td align=right>");
2097         fmt_bytecount(pb, c1->data_count);
2098         url_fprintf(pb, "\n");
2099         c1 = c1->next;
2100     }
2101     url_fprintf(pb, "</table>\n");
2102
2103     /* date */
2104     ti = time(NULL);
2105     p = ctime(&ti);
2106     url_fprintf(pb, "<hr size=1 noshade>Generated at %s", p);
2107     url_fprintf(pb, "</body>\n</html>\n");
2108
2109     len = url_close_dyn_buf(pb, &c->pb_buffer);
2110     c->buffer_ptr = c->pb_buffer;
2111     c->buffer_end = c->pb_buffer + len;
2112 }
2113
2114 /* check if the parser needs to be opened for stream i */
2115 static void open_parser(AVFormatContext *s, int i)
2116 {
2117     AVStream *st = s->streams[i];
2118     AVCodec *codec;
2119
2120     if (!st->codec->codec) {
2121         codec = avcodec_find_decoder(st->codec->codec_id);
2122         if (codec && (codec->capabilities & CODEC_CAP_PARSE_ONLY)) {
2123             st->codec->parse_only = 1;
2124             if (avcodec_open(st->codec, codec) < 0)
2125                 st->codec->parse_only = 0;
2126         }
2127     }
2128 }
2129
2130 static int open_input_stream(HTTPContext *c, const char *info)
2131 {
2132     char buf[128];
2133     char input_filename[1024];
2134     AVFormatContext *s;
2135     int buf_size, i, ret;
2136     int64_t stream_pos;
2137
2138     /* find file name */
2139     if (c->stream->feed) {
2140         strcpy(input_filename, c->stream->feed->feed_filename);
2141         buf_size = FFM_PACKET_SIZE;
2142         /* compute position (absolute time) */
2143         if (find_info_tag(buf, sizeof(buf), "date", info)) {
2144             stream_pos = parse_date(buf, 0);
2145             if (stream_pos == INT64_MIN)
2146                 return -1;
2147         } else if (find_info_tag(buf, sizeof(buf), "buffer", info)) {
2148             int prebuffer = strtol(buf, 0, 10);
2149             stream_pos = av_gettime() - prebuffer * (int64_t)1000000;
2150         } else
2151             stream_pos = av_gettime() - c->stream->prebuffer * (int64_t)1000;
2152     } else {
2153         strcpy(input_filename, c->stream->feed_filename);
2154         buf_size = 0;
2155         /* compute position (relative time) */
2156         if (find_info_tag(buf, sizeof(buf), "date", info)) {
2157             stream_pos = parse_date(buf, 1);
2158             if (stream_pos == INT64_MIN)
2159                 return -1;
2160         } else
2161             stream_pos = 0;
2162     }
2163     if (input_filename[0] == '\0')
2164         return -1;
2165
2166     /* open stream */
2167     if ((ret = av_open_input_file(&s, input_filename, c->stream->ifmt,
2168                                   buf_size, c->stream->ap_in)) < 0) {
2169         http_log("could not open %s: %d\n", input_filename, ret);
2170         return -1;
2171     }
2172     s->flags |= AVFMT_FLAG_GENPTS;
2173     c->fmt_in = s;
2174     if (strcmp(s->iformat->name, "ffm") && av_find_stream_info(c->fmt_in) < 0) {
2175         http_log("Could not find stream info '%s'\n", input_filename);
2176         av_close_input_file(s);
2177         return -1;
2178     }
2179
2180     /* open each parser */
2181     for(i=0;i<s->nb_streams;i++)
2182         open_parser(s, i);
2183
2184     /* choose stream as clock source (we favorize video stream if
2185        present) for packet sending */
2186     c->pts_stream_index = 0;
2187     for(i=0;i<c->stream->nb_streams;i++) {
2188         if (c->pts_stream_index == 0 &&
2189             c->stream->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2190             c->pts_stream_index = i;
2191         }
2192     }
2193
2194 #if 1
2195     if (c->fmt_in->iformat->read_seek)
2196         av_seek_frame(c->fmt_in, -1, stream_pos, 0);
2197 #endif
2198     /* set the start time (needed for maxtime and RTP packet timing) */
2199     c->start_time = cur_time;
2200     c->first_pts = AV_NOPTS_VALUE;
2201     return 0;
2202 }
2203
2204 /* return the server clock (in us) */
2205 static int64_t get_server_clock(HTTPContext *c)
2206 {
2207     /* compute current pts value from system time */
2208     return (cur_time - c->start_time) * 1000;
2209 }
2210
2211 /* return the estimated time at which the current packet must be sent
2212    (in us) */
2213 static int64_t get_packet_send_clock(HTTPContext *c)
2214 {
2215     int bytes_left, bytes_sent, frame_bytes;
2216
2217     frame_bytes = c->cur_frame_bytes;
2218     if (frame_bytes <= 0)
2219         return c->cur_pts;
2220     else {
2221         bytes_left = c->buffer_end - c->buffer_ptr;
2222         bytes_sent = frame_bytes - bytes_left;
2223         return c->cur_pts + (c->cur_frame_duration * bytes_sent) / frame_bytes;
2224     }
2225 }
2226
2227
2228 static int http_prepare_data(HTTPContext *c)
2229 {
2230     int i, len, ret;
2231     AVFormatContext *ctx;
2232
2233     av_freep(&c->pb_buffer);
2234     switch(c->state) {
2235     case HTTPSTATE_SEND_DATA_HEADER:
2236         memset(&c->fmt_ctx, 0, sizeof(c->fmt_ctx));
2237         av_metadata_set2(&c->fmt_ctx.metadata, "author"   , c->stream->author   , 0);
2238         av_metadata_set2(&c->fmt_ctx.metadata, "comment"  , c->stream->comment  , 0);
2239         av_metadata_set2(&c->fmt_ctx.metadata, "copyright", c->stream->copyright, 0);
2240         av_metadata_set2(&c->fmt_ctx.metadata, "title"    , c->stream->title    , 0);
2241
2242         for(i=0;i<c->stream->nb_streams;i++) {
2243             AVStream *st;
2244             AVStream *src;
2245             st = av_mallocz(sizeof(AVStream));
2246             c->fmt_ctx.streams[i] = st;
2247             /* if file or feed, then just take streams from FFStream struct */
2248             if (!c->stream->feed ||
2249                 c->stream->feed == c->stream)
2250                 src = c->stream->streams[i];
2251             else
2252                 src = c->stream->feed->streams[c->stream->feed_streams[i]];
2253
2254             *st = *src;
2255             st->priv_data = 0;
2256             st->codec->frame_number = 0; /* XXX: should be done in
2257                                            AVStream, not in codec */
2258         }
2259         /* set output format parameters */
2260         c->fmt_ctx.oformat = c->stream->fmt;
2261         c->fmt_ctx.nb_streams = c->stream->nb_streams;
2262
2263         c->got_key_frame = 0;
2264
2265         /* prepare header and save header data in a stream */
2266         if (url_open_dyn_buf(&c->fmt_ctx.pb) < 0) {
2267             /* XXX: potential leak */
2268             return -1;
2269         }
2270         c->fmt_ctx.pb->is_streamed = 1;
2271
2272         /*
2273          * HACK to avoid mpeg ps muxer to spit many underflow errors
2274          * Default value from FFmpeg
2275          * Try to set it use configuration option
2276          */
2277         c->fmt_ctx.preload   = (int)(0.5*AV_TIME_BASE);
2278         c->fmt_ctx.max_delay = (int)(0.7*AV_TIME_BASE);
2279
2280         av_set_parameters(&c->fmt_ctx, NULL);
2281         if (av_write_header(&c->fmt_ctx) < 0) {
2282             http_log("Error writing output header\n");
2283             return -1;
2284         }
2285         av_metadata_free(&c->fmt_ctx.metadata);
2286
2287         len = url_close_dyn_buf(c->fmt_ctx.pb, &c->pb_buffer);
2288         c->buffer_ptr = c->pb_buffer;
2289         c->buffer_end = c->pb_buffer + len;
2290
2291         c->state = HTTPSTATE_SEND_DATA;
2292         c->last_packet_sent = 0;
2293         break;
2294     case HTTPSTATE_SEND_DATA:
2295         /* find a new packet */
2296         /* read a packet from the input stream */
2297         if (c->stream->feed)
2298             ffm_set_write_index(c->fmt_in,
2299                                 c->stream->feed->feed_write_index,
2300                                 c->stream->feed->feed_size);
2301
2302         if (c->stream->max_time &&
2303             c->stream->max_time + c->start_time - cur_time < 0)
2304             /* We have timed out */
2305             c->state = HTTPSTATE_SEND_DATA_TRAILER;
2306         else {
2307             AVPacket pkt;
2308         redo:
2309             if (av_read_frame(c->fmt_in, &pkt) < 0) {
2310                 if (c->stream->feed && c->stream->feed->feed_opened) {
2311                     /* if coming from feed, it means we reached the end of the
2312                        ffm file, so must wait for more data */
2313                     c->state = HTTPSTATE_WAIT_FEED;
2314                     return 1; /* state changed */
2315                 } else {
2316                     if (c->stream->loop) {
2317                         av_close_input_file(c->fmt_in);
2318                         c->fmt_in = NULL;
2319                         if (open_input_stream(c, "") < 0)
2320                             goto no_loop;
2321                         goto redo;
2322                     } else {
2323                     no_loop:
2324                         /* must send trailer now because eof or error */
2325                         c->state = HTTPSTATE_SEND_DATA_TRAILER;
2326                     }
2327                 }
2328             } else {
2329                 int source_index = pkt.stream_index;
2330                 /* update first pts if needed */
2331                 if (c->first_pts == AV_NOPTS_VALUE) {
2332                     c->first_pts = av_rescale_q(pkt.dts, c->fmt_in->streams[pkt.stream_index]->time_base, AV_TIME_BASE_Q);
2333                     c->start_time = cur_time;
2334                 }
2335                 /* send it to the appropriate stream */
2336                 if (c->stream->feed) {
2337                     /* if coming from a feed, select the right stream */
2338                     if (c->switch_pending) {
2339                         c->switch_pending = 0;
2340                         for(i=0;i<c->stream->nb_streams;i++) {
2341                             if (c->switch_feed_streams[i] == pkt.stream_index)
2342                                 if (pkt.flags & AV_PKT_FLAG_KEY)
2343                                     do_switch_stream(c, i);
2344                             if (c->switch_feed_streams[i] >= 0)
2345                                 c->switch_pending = 1;
2346                         }
2347                     }
2348                     for(i=0;i<c->stream->nb_streams;i++) {
2349                         if (c->stream->feed_streams[i] == pkt.stream_index) {
2350                             AVStream *st = c->fmt_in->streams[source_index];
2351                             pkt.stream_index = i;
2352                             if (pkt.flags & AV_PKT_FLAG_KEY &&
2353                                 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2354                                  c->stream->nb_streams == 1))
2355                                 c->got_key_frame = 1;
2356                             if (!c->stream->send_on_key || c->got_key_frame)
2357                                 goto send_it;
2358                         }
2359                     }
2360                 } else {
2361                     AVCodecContext *codec;
2362                     AVStream *ist, *ost;
2363                 send_it:
2364                     ist = c->fmt_in->streams[source_index];
2365                     /* specific handling for RTP: we use several
2366                        output stream (one for each RTP
2367                        connection). XXX: need more abstract handling */
2368                     if (c->is_packetized) {
2369                         /* compute send time and duration */
2370                         c->cur_pts = av_rescale_q(pkt.dts, ist->time_base, AV_TIME_BASE_Q);
2371                         if (ist->start_time != AV_NOPTS_VALUE)
2372                             c->cur_pts -= av_rescale_q(ist->start_time, ist->time_base, AV_TIME_BASE_Q);
2373                         c->cur_frame_duration = av_rescale_q(pkt.duration, ist->time_base, AV_TIME_BASE_Q);
2374                         /* find RTP context */
2375                         c->packet_stream_index = pkt.stream_index;
2376                         ctx = c->rtp_ctx[c->packet_stream_index];
2377                         if(!ctx) {
2378                             av_free_packet(&pkt);
2379                             break;
2380                         }
2381                         codec = ctx->streams[0]->codec;
2382                         /* only one stream per RTP connection */
2383                         pkt.stream_index = 0;
2384                     } else {
2385                         ctx = &c->fmt_ctx;
2386                         /* Fudge here */
2387                         codec = ctx->streams[pkt.stream_index]->codec;
2388                     }
2389
2390                     if (c->is_packetized) {
2391                         int max_packet_size;
2392                         if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP)
2393                             max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
2394                         else
2395                             max_packet_size = url_get_max_packet_size(c->rtp_handles[c->packet_stream_index]);
2396                         ret = url_open_dyn_packet_buf(&ctx->pb, max_packet_size);
2397                     } else {
2398                         ret = url_open_dyn_buf(&ctx->pb);
2399                     }
2400                     if (ret < 0) {
2401                         /* XXX: potential leak */
2402                         return -1;
2403                     }
2404                     ost = ctx->streams[pkt.stream_index];
2405
2406                     ctx->pb->is_streamed = 1;
2407                     if (pkt.dts != AV_NOPTS_VALUE)
2408                         pkt.dts = av_rescale_q(pkt.dts, ist->time_base, ost->time_base);
2409                     if (pkt.pts != AV_NOPTS_VALUE)
2410                         pkt.pts = av_rescale_q(pkt.pts, ist->time_base, ost->time_base);
2411                     pkt.duration = av_rescale_q(pkt.duration, ist->time_base, ost->time_base);
2412                     if (av_write_frame(ctx, &pkt) < 0) {
2413                         http_log("Error writing frame to output\n");
2414                         c->state = HTTPSTATE_SEND_DATA_TRAILER;
2415                     }
2416
2417                     len = url_close_dyn_buf(ctx->pb, &c->pb_buffer);
2418                     c->cur_frame_bytes = len;
2419                     c->buffer_ptr = c->pb_buffer;
2420                     c->buffer_end = c->pb_buffer + len;
2421
2422                     codec->frame_number++;
2423                     if (len == 0) {
2424                         av_free_packet(&pkt);
2425                         goto redo;
2426                     }
2427                 }
2428                 av_free_packet(&pkt);
2429             }
2430         }
2431         break;
2432     default:
2433     case HTTPSTATE_SEND_DATA_TRAILER:
2434         /* last packet test ? */
2435         if (c->last_packet_sent || c->is_packetized)
2436             return -1;
2437         ctx = &c->fmt_ctx;
2438         /* prepare header */
2439         if (url_open_dyn_buf(&ctx->pb) < 0) {
2440             /* XXX: potential leak */
2441             return -1;
2442         }
2443         c->fmt_ctx.pb->is_streamed = 1;
2444         av_write_trailer(ctx);
2445         len = url_close_dyn_buf(ctx->pb, &c->pb_buffer);
2446         c->buffer_ptr = c->pb_buffer;
2447         c->buffer_end = c->pb_buffer + len;
2448
2449         c->last_packet_sent = 1;
2450         break;
2451     }
2452     return 0;
2453 }
2454
2455 /* should convert the format at the same time */
2456 /* send data starting at c->buffer_ptr to the output connection
2457    (either UDP or TCP connection) */
2458 static int http_send_data(HTTPContext *c)
2459 {
2460     int len, ret;
2461
2462     for(;;) {
2463         if (c->buffer_ptr >= c->buffer_end) {
2464             ret = http_prepare_data(c);
2465             if (ret < 0)
2466                 return -1;
2467             else if (ret != 0)
2468                 /* state change requested */
2469                 break;
2470         } else {
2471             if (c->is_packetized) {
2472                 /* RTP data output */
2473                 len = c->buffer_end - c->buffer_ptr;
2474                 if (len < 4) {
2475                     /* fail safe - should never happen */
2476                 fail1:
2477                     c->buffer_ptr = c->buffer_end;
2478                     return 0;
2479                 }
2480                 len = (c->buffer_ptr[0] << 24) |
2481                     (c->buffer_ptr[1] << 16) |
2482                     (c->buffer_ptr[2] << 8) |
2483                     (c->buffer_ptr[3]);
2484                 if (len > (c->buffer_end - c->buffer_ptr))
2485                     goto fail1;
2486                 if ((get_packet_send_clock(c) - get_server_clock(c)) > 0) {
2487                     /* nothing to send yet: we can wait */
2488                     return 0;
2489                 }
2490
2491                 c->data_count += len;
2492                 update_datarate(&c->datarate, c->data_count);
2493                 if (c->stream)
2494                     c->stream->bytes_served += len;
2495
2496                 if (c->rtp_protocol == RTSP_LOWER_TRANSPORT_TCP) {
2497                     /* RTP packets are sent inside the RTSP TCP connection */
2498                     ByteIOContext *pb;
2499                     int interleaved_index, size;
2500                     uint8_t header[4];
2501                     HTTPContext *rtsp_c;
2502
2503                     rtsp_c = c->rtsp_c;
2504                     /* if no RTSP connection left, error */
2505                     if (!rtsp_c)
2506                         return -1;
2507                     /* if already sending something, then wait. */
2508                     if (rtsp_c->state != RTSPSTATE_WAIT_REQUEST)
2509                         break;
2510                     if (url_open_dyn_buf(&pb) < 0)
2511                         goto fail1;
2512                     interleaved_index = c->packet_stream_index * 2;
2513                     /* RTCP packets are sent at odd indexes */
2514                     if (c->buffer_ptr[1] == 200)
2515                         interleaved_index++;
2516                     /* write RTSP TCP header */
2517                     header[0] = '$';
2518                     header[1] = interleaved_index;
2519                     header[2] = len >> 8;
2520                     header[3] = len;
2521                     put_buffer(pb, header, 4);
2522                     /* write RTP packet data */
2523                     c->buffer_ptr += 4;
2524                     put_buffer(pb, c->buffer_ptr, len);
2525                     size = url_close_dyn_buf(pb, &c->packet_buffer);
2526                     /* prepare asynchronous TCP sending */
2527                     rtsp_c->packet_buffer_ptr = c->packet_buffer;
2528                     rtsp_c->packet_buffer_end = c->packet_buffer + size;
2529                     c->buffer_ptr += len;
2530
2531                     /* send everything we can NOW */
2532                     len = send(rtsp_c->fd, rtsp_c->packet_buffer_ptr,
2533                                 rtsp_c->packet_buffer_end - rtsp_c->packet_buffer_ptr, 0);
2534                     if (len > 0)
2535                         rtsp_c->packet_buffer_ptr += len;
2536                     if (rtsp_c->packet_buffer_ptr < rtsp_c->packet_buffer_end) {
2537                         /* if we could not send all the data, we will
2538                            send it later, so a new state is needed to
2539                            "lock" the RTSP TCP connection */
2540                         rtsp_c->state = RTSPSTATE_SEND_PACKET;
2541                         break;
2542                     } else
2543                         /* all data has been sent */
2544                         av_freep(&c->packet_buffer);
2545                 } else {
2546                     /* send RTP packet directly in UDP */
2547                     c->buffer_ptr += 4;
2548                     url_write(c->rtp_handles[c->packet_stream_index],
2549                               c->buffer_ptr, len);
2550                     c->buffer_ptr += len;
2551                     /* here we continue as we can send several packets per 10 ms slot */
2552                 }
2553             } else {
2554                 /* TCP data output */
2555                 len = send(c->fd, c->buffer_ptr, c->buffer_end - c->buffer_ptr, 0);
2556                 if (len < 0) {
2557                     if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2558                         ff_neterrno() != FF_NETERROR(EINTR))
2559                         /* error : close connection */
2560                         return -1;
2561                     else
2562                         return 0;
2563                 } else
2564                     c->buffer_ptr += len;
2565
2566                 c->data_count += len;
2567                 update_datarate(&c->datarate, c->data_count);
2568                 if (c->stream)
2569                     c->stream->bytes_served += len;
2570                 break;
2571             }
2572         }
2573     } /* for(;;) */
2574     return 0;
2575 }
2576
2577 static int http_start_receive_data(HTTPContext *c)
2578 {
2579     int fd;
2580
2581     if (c->stream->feed_opened)
2582         return -1;
2583
2584     /* Don't permit writing to this one */
2585     if (c->stream->readonly)
2586         return -1;
2587
2588     /* open feed */
2589     fd = open(c->stream->feed_filename, O_RDWR);
2590     if (fd < 0) {
2591         http_log("Error opening feeder file: %s\n", strerror(errno));
2592         return -1;
2593     }
2594     c->feed_fd = fd;
2595
2596     if (c->stream->truncate) {
2597         /* truncate feed file */
2598         ffm_write_write_index(c->feed_fd, FFM_PACKET_SIZE);
2599         ftruncate(c->feed_fd, FFM_PACKET_SIZE);
2600         http_log("Truncating feed file '%s'\n", c->stream->feed_filename);
2601     } else {
2602         if ((c->stream->feed_write_index = ffm_read_write_index(fd)) < 0) {
2603             http_log("Error reading write index from feed file: %s\n", strerror(errno));
2604             return -1;
2605         }
2606     }
2607
2608     c->stream->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE);
2609     c->stream->feed_size = lseek(fd, 0, SEEK_END);
2610     lseek(fd, 0, SEEK_SET);
2611
2612     /* init buffer input */
2613     c->buffer_ptr = c->buffer;
2614     c->buffer_end = c->buffer + FFM_PACKET_SIZE;
2615     c->stream->feed_opened = 1;
2616     c->chunked_encoding = !!av_stristr(c->buffer, "Transfer-Encoding: chunked");
2617     return 0;
2618 }
2619
2620 static int http_receive_data(HTTPContext *c)
2621 {
2622     HTTPContext *c1;
2623     int len, loop_run = 0;
2624
2625     while (c->chunked_encoding && !c->chunk_size &&
2626            c->buffer_end > c->buffer_ptr) {
2627         /* read chunk header, if present */
2628         len = recv(c->fd, c->buffer_ptr, 1, 0);
2629
2630         if (len < 0) {
2631             if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2632                 ff_neterrno() != FF_NETERROR(EINTR))
2633                 /* error : close connection */
2634                 goto fail;
2635             return 0;
2636         } else if (len == 0) {
2637             /* end of connection : close it */
2638             goto fail;
2639         } else if (c->buffer_ptr - c->buffer >= 2 &&
2640                    !memcmp(c->buffer_ptr - 1, "\r\n", 2)) {
2641             c->chunk_size = strtol(c->buffer, 0, 16);
2642             if (c->chunk_size == 0) // end of stream
2643                 goto fail;
2644             c->buffer_ptr = c->buffer;
2645             break;
2646         } else if (++loop_run > 10) {
2647             /* no chunk header, abort */
2648             goto fail;
2649         } else {
2650             c->buffer_ptr++;
2651         }
2652     }
2653
2654     if (c->buffer_end > c->buffer_ptr) {
2655         len = recv(c->fd, c->buffer_ptr,
2656                    FFMIN(c->chunk_size, c->buffer_end - c->buffer_ptr), 0);
2657         if (len < 0) {
2658             if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
2659                 ff_neterrno() != FF_NETERROR(EINTR))
2660                 /* error : close connection */
2661                 goto fail;
2662         } else if (len == 0)
2663             /* end of connection : close it */
2664             goto fail;
2665         else {
2666             c->chunk_size -= len;
2667             c->buffer_ptr += len;
2668             c->data_count += len;
2669             update_datarate(&c->datarate, c->data_count);
2670         }
2671     }
2672
2673     if (c->buffer_ptr - c->buffer >= 2 && c->data_count > FFM_PACKET_SIZE) {
2674         if (c->buffer[0] != 'f' ||
2675             c->buffer[1] != 'm') {
2676             http_log("Feed stream has become desynchronized -- disconnecting\n");
2677             goto fail;
2678         }
2679     }
2680
2681     if (c->buffer_ptr >= c->buffer_end) {
2682         FFStream *feed = c->stream;
2683         /* a packet has been received : write it in the store, except
2684            if header */
2685         if (c->data_count > FFM_PACKET_SIZE) {
2686
2687             //            printf("writing pos=0x%"PRIx64" size=0x%"PRIx64"\n", feed->feed_write_index, feed->feed_size);
2688             /* XXX: use llseek or url_seek */
2689             lseek(c->feed_fd, feed->feed_write_index, SEEK_SET);
2690             if (write(c->feed_fd, c->buffer, FFM_PACKET_SIZE) < 0) {
2691                 http_log("Error writing to feed file: %s\n", strerror(errno));
2692                 goto fail;
2693             }
2694
2695             feed->feed_write_index += FFM_PACKET_SIZE;
2696             /* update file size */
2697             if (feed->feed_write_index > c->stream->feed_size)
2698                 feed->feed_size = feed->feed_write_index;
2699
2700             /* handle wrap around if max file size reached */
2701             if (c->stream->feed_max_size && feed->feed_write_index >= c->stream->feed_max_size)
2702                 feed->feed_write_index = FFM_PACKET_SIZE;
2703
2704             /* write index */
2705             if (ffm_write_write_index(c->feed_fd, feed->feed_write_index) < 0) {
2706                 http_log("Error writing index to feed file: %s\n", strerror(errno));
2707                 goto fail;
2708             }
2709
2710             /* wake up any waiting connections */
2711             for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2712                 if (c1->state == HTTPSTATE_WAIT_FEED &&
2713                     c1->stream->feed == c->stream->feed)
2714                     c1->state = HTTPSTATE_SEND_DATA;
2715             }
2716         } else {
2717             /* We have a header in our hands that contains useful data */
2718             AVFormatContext *s = NULL;
2719             ByteIOContext *pb;
2720             AVInputFormat *fmt_in;
2721             int i;
2722
2723             /* use feed output format name to find corresponding input format */
2724             fmt_in = av_find_input_format(feed->fmt->name);
2725             if (!fmt_in)
2726                 goto fail;
2727
2728             url_open_buf(&pb, c->buffer, c->buffer_end - c->buffer, URL_RDONLY);
2729             pb->is_streamed = 1;
2730
2731             if (av_open_input_stream(&s, pb, c->stream->feed_filename, fmt_in, NULL) < 0) {
2732                 av_free(pb);
2733                 goto fail;
2734             }
2735
2736             /* Now we have the actual streams */
2737             if (s->nb_streams != feed->nb_streams) {
2738                 av_close_input_stream(s);
2739                 av_free(pb);
2740                 http_log("Feed '%s' stream number does not match registered feed\n",
2741                          c->stream->feed_filename);
2742                 goto fail;
2743             }
2744
2745             for (i = 0; i < s->nb_streams; i++) {
2746                 AVStream *fst = feed->streams[i];
2747                 AVStream *st = s->streams[i];
2748                 memcpy(fst->codec, st->codec, sizeof(AVCodecContext));
2749                 if (fst->codec->extradata_size) {
2750                     fst->codec->extradata = av_malloc(fst->codec->extradata_size);
2751                     if (!fst->codec->extradata)
2752                         goto fail;
2753                     memcpy(fst->codec->extradata, st->codec->extradata,
2754                            fst->codec->extradata_size);
2755                 }
2756             }
2757
2758             av_close_input_stream(s);
2759             av_free(pb);
2760         }
2761         c->buffer_ptr = c->buffer;
2762     }
2763
2764     return 0;
2765  fail:
2766     c->stream->feed_opened = 0;
2767     close(c->feed_fd);
2768     /* wake up any waiting connections to stop waiting for feed */
2769     for(c1 = first_http_ctx; c1 != NULL; c1 = c1->next) {
2770         if (c1->state == HTTPSTATE_WAIT_FEED &&
2771             c1->stream->feed == c->stream->feed)
2772             c1->state = HTTPSTATE_SEND_DATA_TRAILER;
2773     }
2774     return -1;
2775 }
2776
2777 /********************************************************************/
2778 /* RTSP handling */
2779
2780 static void rtsp_reply_header(HTTPContext *c, enum RTSPStatusCode error_number)
2781 {
2782     const char *str;
2783     time_t ti;
2784     struct tm *tm;
2785     char buf2[32];
2786
2787     switch(error_number) {
2788     case RTSP_STATUS_OK:
2789         str = "OK";
2790         break;
2791     case RTSP_STATUS_METHOD:
2792         str = "Method Not Allowed";
2793         break;
2794     case RTSP_STATUS_BANDWIDTH:
2795         str = "Not Enough Bandwidth";
2796         break;
2797     case RTSP_STATUS_SESSION:
2798         str = "Session Not Found";
2799         break;
2800     case RTSP_STATUS_STATE:
2801         str = "Method Not Valid in This State";
2802         break;
2803     case RTSP_STATUS_AGGREGATE:
2804         str = "Aggregate operation not allowed";
2805         break;
2806     case RTSP_STATUS_ONLY_AGGREGATE:
2807         str = "Only aggregate operation allowed";
2808         break;
2809     case RTSP_STATUS_TRANSPORT:
2810         str = "Unsupported transport";
2811         break;
2812     case RTSP_STATUS_INTERNAL:
2813         str = "Internal Server Error";
2814         break;
2815     case RTSP_STATUS_SERVICE:
2816         str = "Service Unavailable";
2817         break;
2818     case RTSP_STATUS_VERSION:
2819         str = "RTSP Version not supported";
2820         break;
2821     default:
2822         str = "Unknown Error";
2823         break;
2824     }
2825
2826     url_fprintf(c->pb, "RTSP/1.0 %d %s\r\n", error_number, str);
2827     url_fprintf(c->pb, "CSeq: %d\r\n", c->seq);
2828
2829     /* output GMT time */
2830     ti = time(NULL);
2831     tm = gmtime(&ti);
2832     strftime(buf2, sizeof(buf2), "%a, %d %b %Y %H:%M:%S", tm);
2833     url_fprintf(c->pb, "Date: %s GMT\r\n", buf2);
2834 }
2835
2836 static void rtsp_reply_error(HTTPContext *c, enum RTSPStatusCode error_number)
2837 {
2838     rtsp_reply_header(c, error_number);
2839     url_fprintf(c->pb, "\r\n");
2840 }
2841
2842 static int rtsp_parse_request(HTTPContext *c)
2843 {
2844     const char *p, *p1, *p2;
2845     char cmd[32];
2846     char url[1024];
2847     char protocol[32];
2848     char line[1024];
2849     int len;
2850     RTSPMessageHeader header1, *header = &header1;
2851
2852     c->buffer_ptr[0] = '\0';
2853     p = c->buffer;
2854
2855     get_word(cmd, sizeof(cmd), &p);
2856     get_word(url, sizeof(url), &p);
2857     get_word(protocol, sizeof(protocol), &p);
2858
2859     av_strlcpy(c->method, cmd, sizeof(c->method));
2860     av_strlcpy(c->url, url, sizeof(c->url));
2861     av_strlcpy(c->protocol, protocol, sizeof(c->protocol));
2862
2863     if (url_open_dyn_buf(&c->pb) < 0) {
2864         /* XXX: cannot do more */
2865         c->pb = NULL; /* safety */
2866         return -1;
2867     }
2868
2869     /* check version name */
2870     if (strcmp(protocol, "RTSP/1.0") != 0) {
2871         rtsp_reply_error(c, RTSP_STATUS_VERSION);
2872         goto the_end;
2873     }
2874
2875     /* parse each header line */
2876     memset(header, 0, sizeof(*header));
2877     /* skip to next line */
2878     while (*p != '\n' && *p != '\0')
2879         p++;
2880     if (*p == '\n')
2881         p++;
2882     while (*p != '\0') {
2883         p1 = memchr(p, '\n', (char *)c->buffer_ptr - p);
2884         if (!p1)
2885             break;
2886         p2 = p1;
2887         if (p2 > p && p2[-1] == '\r')
2888             p2--;
2889         /* skip empty line */
2890         if (p2 == p)
2891             break;
2892         len = p2 - p;
2893         if (len > sizeof(line) - 1)
2894             len = sizeof(line) - 1;
2895         memcpy(line, p, len);
2896         line[len] = '\0';
2897         ff_rtsp_parse_line(header, line, NULL);
2898         p = p1 + 1;
2899     }
2900
2901     /* handle sequence number */
2902     c->seq = header->seq;
2903
2904     if (!strcmp(cmd, "DESCRIBE"))
2905         rtsp_cmd_describe(c, url);
2906     else if (!strcmp(cmd, "OPTIONS"))
2907         rtsp_cmd_options(c, url);
2908     else if (!strcmp(cmd, "SETUP"))
2909         rtsp_cmd_setup(c, url, header);
2910     else if (!strcmp(cmd, "PLAY"))
2911         rtsp_cmd_play(c, url, header);
2912     else if (!strcmp(cmd, "PAUSE"))
2913         rtsp_cmd_pause(c, url, header);
2914     else if (!strcmp(cmd, "TEARDOWN"))
2915         rtsp_cmd_teardown(c, url, header);
2916     else
2917         rtsp_reply_error(c, RTSP_STATUS_METHOD);
2918
2919  the_end:
2920     len = url_close_dyn_buf(c->pb, &c->pb_buffer);
2921     c->pb = NULL; /* safety */
2922     if (len < 0) {
2923         /* XXX: cannot do more */
2924         return -1;
2925     }
2926     c->buffer_ptr = c->pb_buffer;
2927     c->buffer_end = c->pb_buffer + len;
2928     c->state = RTSPSTATE_SEND_REPLY;
2929     return 0;
2930 }
2931
2932 static int prepare_sdp_description(FFStream *stream, uint8_t **pbuffer,
2933                                    struct in_addr my_ip)
2934 {
2935     AVFormatContext *avc;
2936     AVStream avs[MAX_STREAMS];
2937     int i;
2938
2939     avc =  avformat_alloc_context();
2940     if (avc == NULL) {
2941         return -1;
2942     }
2943     av_metadata_set2(&avc->metadata, "title",
2944                      stream->title[0] ? stream->title : "No Title", 0);
2945     avc->nb_streams = stream->nb_streams;
2946     if (stream->is_multicast) {
2947         snprintf(avc->filename, 1024, "rtp://%s:%d?multicast=1?ttl=%d",
2948                  inet_ntoa(stream->multicast_ip),
2949                  stream->multicast_port, stream->multicast_ttl);
2950     } else {
2951         snprintf(avc->filename, 1024, "rtp://0.0.0.0");
2952     }
2953
2954     for(i = 0; i < stream->nb_streams; i++) {
2955         avc->streams[i] = &avs[i];
2956         avc->streams[i]->codec = stream->streams[i]->codec;
2957     }
2958     *pbuffer = av_mallocz(2048);
2959     avf_sdp_create(&avc, 1, *pbuffer, 2048);
2960     av_metadata_free(&avc->metadata);
2961     av_free(avc);
2962
2963     return strlen(*pbuffer);
2964 }
2965
2966 static void rtsp_cmd_options(HTTPContext *c, const char *url)
2967 {
2968 //    rtsp_reply_header(c, RTSP_STATUS_OK);
2969     url_fprintf(c->pb, "RTSP/1.0 %d %s\r\n", RTSP_STATUS_OK, "OK");
2970     url_fprintf(c->pb, "CSeq: %d\r\n", c->seq);
2971     url_fprintf(c->pb, "Public: %s\r\n", "OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
2972     url_fprintf(c->pb, "\r\n");
2973 }
2974
2975 static void rtsp_cmd_describe(HTTPContext *c, const char *url)
2976 {
2977     FFStream *stream;
2978     char path1[1024];
2979     const char *path;
2980     uint8_t *content;
2981     int content_length, len;
2982     struct sockaddr_in my_addr;
2983
2984     /* find which url is asked */
2985     ff_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
2986     path = path1;
2987     if (*path == '/')
2988         path++;
2989
2990     for(stream = first_stream; stream != NULL; stream = stream->next) {
2991         if (!stream->is_feed &&
2992             stream->fmt && !strcmp(stream->fmt->name, "rtp") &&
2993             !strcmp(path, stream->filename)) {
2994             goto found;
2995         }
2996     }
2997     /* no stream found */
2998     rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
2999     return;
3000
3001  found:
3002     /* prepare the media description in sdp format */
3003
3004     /* get the host IP */
3005     len = sizeof(my_addr);
3006     getsockname(c->fd, (struct sockaddr *)&my_addr, &len);
3007     content_length = prepare_sdp_description(stream, &content, my_addr.sin_addr);
3008     if (content_length < 0) {
3009         rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3010         return;
3011     }
3012     rtsp_reply_header(c, RTSP_STATUS_OK);
3013     url_fprintf(c->pb, "Content-Base: %s/\r\n", url);
3014     url_fprintf(c->pb, "Content-Type: application/sdp\r\n");
3015     url_fprintf(c->pb, "Content-Length: %d\r\n", content_length);
3016     url_fprintf(c->pb, "\r\n");
3017     put_buffer(c->pb, content, content_length);
3018     av_free(content);
3019 }
3020
3021 static HTTPContext *find_rtp_session(const char *session_id)
3022 {
3023     HTTPContext *c;
3024
3025     if (session_id[0] == '\0')
3026         return NULL;
3027
3028     for(c = first_http_ctx; c != NULL; c = c->next) {
3029         if (!strcmp(c->session_id, session_id))
3030             return c;
3031     }
3032     return NULL;
3033 }
3034
3035 static RTSPTransportField *find_transport(RTSPMessageHeader *h, enum RTSPLowerTransport lower_transport)
3036 {
3037     RTSPTransportField *th;
3038     int i;
3039
3040     for(i=0;i<h->nb_transports;i++) {
3041         th = &h->transports[i];
3042         if (th->lower_transport == lower_transport)
3043             return th;
3044     }
3045     return NULL;
3046 }
3047
3048 static void rtsp_cmd_setup(HTTPContext *c, const char *url,
3049                            RTSPMessageHeader *h)
3050 {
3051     FFStream *stream;
3052     int stream_index, rtp_port, rtcp_port;
3053     char buf[1024];
3054     char path1[1024];
3055     const char *path;
3056     HTTPContext *rtp_c;
3057     RTSPTransportField *th;
3058     struct sockaddr_in dest_addr;
3059     RTSPActionServerSetup setup;
3060
3061     /* find which url is asked */
3062     ff_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3063     path = path1;
3064     if (*path == '/')
3065         path++;
3066
3067     /* now check each stream */
3068     for(stream = first_stream; stream != NULL; stream = stream->next) {
3069         if (!stream->is_feed &&
3070             stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
3071             /* accept aggregate filenames only if single stream */
3072             if (!strcmp(path, stream->filename)) {
3073                 if (stream->nb_streams != 1) {
3074                     rtsp_reply_error(c, RTSP_STATUS_AGGREGATE);
3075                     return;
3076                 }
3077                 stream_index = 0;
3078                 goto found;
3079             }
3080
3081             for(stream_index = 0; stream_index < stream->nb_streams;
3082                 stream_index++) {
3083                 snprintf(buf, sizeof(buf), "%s/streamid=%d",
3084                          stream->filename, stream_index);
3085                 if (!strcmp(path, buf))
3086                     goto found;
3087             }
3088         }
3089     }
3090     /* no stream found */
3091     rtsp_reply_error(c, RTSP_STATUS_SERVICE); /* XXX: right error ? */
3092     return;
3093  found:
3094
3095     /* generate session id if needed */
3096     if (h->session_id[0] == '\0')
3097         snprintf(h->session_id, sizeof(h->session_id), "%08x%08x",
3098                  av_lfg_get(&random_state), av_lfg_get(&random_state));
3099
3100     /* find rtp session, and create it if none found */
3101     rtp_c = find_rtp_session(h->session_id);
3102     if (!rtp_c) {
3103         /* always prefer UDP */
3104         th = find_transport(h, RTSP_LOWER_TRANSPORT_UDP);
3105         if (!th) {
3106             th = find_transport(h, RTSP_LOWER_TRANSPORT_TCP);
3107             if (!th) {
3108                 rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3109                 return;
3110             }
3111         }
3112
3113         rtp_c = rtp_new_connection(&c->from_addr, stream, h->session_id,
3114                                    th->lower_transport);
3115         if (!rtp_c) {
3116             rtsp_reply_error(c, RTSP_STATUS_BANDWIDTH);
3117             return;
3118         }
3119
3120         /* open input stream */
3121         if (open_input_stream(rtp_c, "") < 0) {
3122             rtsp_reply_error(c, RTSP_STATUS_INTERNAL);
3123             return;
3124         }
3125     }
3126
3127     /* test if stream is OK (test needed because several SETUP needs
3128        to be done for a given file) */
3129     if (rtp_c->stream != stream) {
3130         rtsp_reply_error(c, RTSP_STATUS_SERVICE);
3131         return;
3132     }
3133
3134     /* test if stream is already set up */
3135     if (rtp_c->rtp_ctx[stream_index]) {
3136         rtsp_reply_error(c, RTSP_STATUS_STATE);
3137         return;
3138     }
3139
3140     /* check transport */
3141     th = find_transport(h, rtp_c->rtp_protocol);
3142     if (!th || (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
3143                 th->client_port_min <= 0)) {
3144         rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3145         return;
3146     }
3147
3148     /* setup default options */
3149     setup.transport_option[0] = '\0';
3150     dest_addr = rtp_c->from_addr;
3151     dest_addr.sin_port = htons(th->client_port_min);
3152
3153     /* setup stream */
3154     if (rtp_new_av_stream(rtp_c, stream_index, &dest_addr, c) < 0) {
3155         rtsp_reply_error(c, RTSP_STATUS_TRANSPORT);
3156         return;
3157     }
3158
3159     /* now everything is OK, so we can send the connection parameters */
3160     rtsp_reply_header(c, RTSP_STATUS_OK);
3161     /* session ID */
3162     url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3163
3164     switch(rtp_c->rtp_protocol) {
3165     case RTSP_LOWER_TRANSPORT_UDP:
3166         rtp_port = rtp_get_local_rtp_port(rtp_c->rtp_handles[stream_index]);
3167         rtcp_port = rtp_get_local_rtcp_port(rtp_c->rtp_handles[stream_index]);
3168         url_fprintf(c->pb, "Transport: RTP/AVP/UDP;unicast;"
3169                     "client_port=%d-%d;server_port=%d-%d",
3170                     th->client_port_min, th->client_port_max,
3171                     rtp_port, rtcp_port);
3172         break;
3173     case RTSP_LOWER_TRANSPORT_TCP:
3174         url_fprintf(c->pb, "Transport: RTP/AVP/TCP;interleaved=%d-%d",
3175                     stream_index * 2, stream_index * 2 + 1);
3176         break;
3177     default:
3178         break;
3179     }
3180     if (setup.transport_option[0] != '\0')
3181         url_fprintf(c->pb, ";%s", setup.transport_option);
3182     url_fprintf(c->pb, "\r\n");
3183
3184
3185     url_fprintf(c->pb, "\r\n");
3186 }
3187
3188
3189 /* find an rtp connection by using the session ID. Check consistency
3190    with filename */
3191 static HTTPContext *find_rtp_session_with_url(const char *url,
3192                                               const char *session_id)
3193 {
3194     HTTPContext *rtp_c;
3195     char path1[1024];
3196     const char *path;
3197     char buf[1024];
3198     int s;
3199
3200     rtp_c = find_rtp_session(session_id);
3201     if (!rtp_c)
3202         return NULL;
3203
3204     /* find which url is asked */
3205     ff_url_split(NULL, 0, NULL, 0, NULL, 0, NULL, path1, sizeof(path1), url);
3206     path = path1;
3207     if (*path == '/')
3208         path++;
3209     if(!strcmp(path, rtp_c->stream->filename)) return rtp_c;
3210     for(s=0; s<rtp_c->stream->nb_streams; ++s) {
3211       snprintf(buf, sizeof(buf), "%s/streamid=%d",
3212         rtp_c->stream->filename, s);
3213       if(!strncmp(path, buf, sizeof(buf))) {
3214     // XXX: Should we reply with RTSP_STATUS_ONLY_AGGREGATE if nb_streams>1?
3215         return rtp_c;
3216       }
3217     }
3218     return NULL;
3219 }
3220
3221 static void rtsp_cmd_play(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3222 {
3223     HTTPContext *rtp_c;
3224
3225     rtp_c = find_rtp_session_with_url(url, h->session_id);
3226     if (!rtp_c) {
3227         rtsp_reply_error(c, RTSP_STATUS_SESSION);
3228         return;
3229     }
3230
3231     if (rtp_c->state != HTTPSTATE_SEND_DATA &&
3232         rtp_c->state != HTTPSTATE_WAIT_FEED &&
3233         rtp_c->state != HTTPSTATE_READY) {
3234         rtsp_reply_error(c, RTSP_STATUS_STATE);
3235         return;
3236     }
3237
3238     rtp_c->state = HTTPSTATE_SEND_DATA;
3239
3240     /* now everything is OK, so we can send the connection parameters */
3241     rtsp_reply_header(c, RTSP_STATUS_OK);
3242     /* session ID */
3243     url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3244     url_fprintf(c->pb, "\r\n");
3245 }
3246
3247 static void rtsp_cmd_pause(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3248 {
3249     HTTPContext *rtp_c;
3250
3251     rtp_c = find_rtp_session_with_url(url, h->session_id);
3252     if (!rtp_c) {
3253         rtsp_reply_error(c, RTSP_STATUS_SESSION);
3254         return;
3255     }
3256
3257     if (rtp_c->state != HTTPSTATE_SEND_DATA &&
3258         rtp_c->state != HTTPSTATE_WAIT_FEED) {
3259         rtsp_reply_error(c, RTSP_STATUS_STATE);
3260         return;
3261     }
3262
3263     rtp_c->state = HTTPSTATE_READY;
3264     rtp_c->first_pts = AV_NOPTS_VALUE;
3265     /* now everything is OK, so we can send the connection parameters */
3266     rtsp_reply_header(c, RTSP_STATUS_OK);
3267     /* session ID */
3268     url_fprintf(c->pb, "Session: %s\r\n", rtp_c->session_id);
3269     url_fprintf(c->pb, "\r\n");
3270 }
3271
3272 static void rtsp_cmd_teardown(HTTPContext *c, const char *url, RTSPMessageHeader *h)
3273 {
3274     HTTPContext *rtp_c;
3275     char session_id[32];
3276
3277     rtp_c = find_rtp_session_with_url(url, h->session_id);
3278     if (!rtp_c) {
3279         rtsp_reply_error(c, RTSP_STATUS_SESSION);
3280         return;
3281     }
3282
3283     av_strlcpy(session_id, rtp_c->session_id, sizeof(session_id));
3284
3285     /* abort the session */
3286     close_connection(rtp_c);
3287
3288     /* now everything is OK, so we can send the connection parameters */
3289     rtsp_reply_header(c, RTSP_STATUS_OK);
3290     /* session ID */
3291     url_fprintf(c->pb, "Session: %s\r\n", session_id);
3292     url_fprintf(c->pb, "\r\n");
3293 }
3294
3295
3296 /********************************************************************/
3297 /* RTP handling */
3298
3299 static HTTPContext *rtp_new_connection(struct sockaddr_in *from_addr,
3300                                        FFStream *stream, const char *session_id,
3301                                        enum RTSPLowerTransport rtp_protocol)
3302 {
3303     HTTPContext *c = NULL;
3304     const char *proto_str;
3305
3306     /* XXX: should output a warning page when coming
3307        close to the connection limit */
3308     if (nb_connections >= nb_max_connections)
3309         goto fail;
3310
3311     /* add a new connection */
3312     c = av_mallocz(sizeof(HTTPContext));
3313     if (!c)
3314         goto fail;
3315
3316     c->fd = -1;
3317     c->poll_entry = NULL;
3318     c->from_addr = *from_addr;
3319     c->buffer_size = IOBUFFER_INIT_SIZE;
3320     c->buffer = av_malloc(c->buffer_size);
3321     if (!c->buffer)
3322         goto fail;
3323     nb_connections++;
3324     c->stream = stream;
3325     av_strlcpy(c->session_id, session_id, sizeof(c->session_id));
3326     c->state = HTTPSTATE_READY;
3327     c->is_packetized = 1;
3328     c->rtp_protocol = rtp_protocol;
3329
3330     /* protocol is shown in statistics */
3331     switch(c->rtp_protocol) {
3332     case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
3333         proto_str = "MCAST";
3334         break;
3335     case RTSP_LOWER_TRANSPORT_UDP:
3336         proto_str = "UDP";
3337         break;
3338     case RTSP_LOWER_TRANSPORT_TCP:
3339         proto_str = "TCP";
3340         break;
3341     default:
3342         proto_str = "???";
3343         break;
3344     }
3345     av_strlcpy(c->protocol, "RTP/", sizeof(c->protocol));
3346     av_strlcat(c->protocol, proto_str, sizeof(c->protocol));
3347
3348     current_bandwidth += stream->bandwidth;
3349
3350     c->next = first_http_ctx;
3351     first_http_ctx = c;
3352     return c;
3353
3354  fail:
3355     if (c) {
3356         av_free(c->buffer);
3357         av_free(c);
3358     }
3359     return NULL;
3360 }
3361
3362 /* add a new RTP stream in an RTP connection (used in RTSP SETUP
3363    command). If RTP/TCP protocol is used, TCP connection 'rtsp_c' is
3364    used. */
3365 static int rtp_new_av_stream(HTTPContext *c,
3366                              int stream_index, struct sockaddr_in *dest_addr,
3367                              HTTPContext *rtsp_c)
3368 {
3369     AVFormatContext *ctx;
3370     AVStream *st;
3371     char *ipaddr;
3372     URLContext *h = NULL;
3373     uint8_t *dummy_buf;
3374     int max_packet_size;
3375
3376     /* now we can open the relevant output stream */
3377     ctx = avformat_alloc_context();
3378     if (!ctx)
3379         return -1;
3380     ctx->oformat = av_guess_format("rtp", NULL, NULL);
3381
3382     st = av_mallocz(sizeof(AVStream));
3383     if (!st)
3384         goto fail;
3385     ctx->nb_streams = 1;
3386     ctx->streams[0] = st;
3387
3388     if (!c->stream->feed ||
3389         c->stream->feed == c->stream)
3390         memcpy(st, c->stream->streams[stream_index], sizeof(AVStream));
3391     else
3392         memcpy(st,
3393                c->stream->feed->streams[c->stream->feed_streams[stream_index]],
3394                sizeof(AVStream));
3395     st->priv_data = NULL;
3396
3397     /* build destination RTP address */
3398     ipaddr = inet_ntoa(dest_addr->sin_addr);
3399
3400     switch(c->rtp_protocol) {
3401     case RTSP_LOWER_TRANSPORT_UDP:
3402     case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
3403         /* RTP/UDP case */
3404
3405         /* XXX: also pass as parameter to function ? */
3406         if (c->stream->is_multicast) {
3407             int ttl;
3408             ttl = c->stream->multicast_ttl;
3409             if (!ttl)
3410                 ttl = 16;
3411             snprintf(ctx->filename, sizeof(ctx->filename),
3412                      "rtp://%s:%d?multicast=1&ttl=%d",
3413                      ipaddr, ntohs(dest_addr->sin_port), ttl);
3414         } else {
3415             snprintf(ctx->filename, sizeof(ctx->filename),
3416                      "rtp://%s:%d", ipaddr, ntohs(dest_addr->sin_port));
3417         }
3418
3419         if (url_open(&h, ctx->filename, URL_WRONLY) < 0)
3420             goto fail;
3421         c->rtp_handles[stream_index] = h;
3422         max_packet_size = url_get_max_packet_size(h);
3423         break;
3424     case RTSP_LOWER_TRANSPORT_TCP:
3425         /* RTP/TCP case */
3426         c->rtsp_c = rtsp_c;
3427         max_packet_size = RTSP_TCP_MAX_PACKET_SIZE;
3428         break;
3429     default:
3430         goto fail;
3431     }
3432
3433     http_log("%s:%d - - \"PLAY %s/streamid=%d %s\"\n",
3434              ipaddr, ntohs(dest_addr->sin_port),
3435              c->stream->filename, stream_index, c->protocol);
3436
3437     /* normally, no packets should be output here, but the packet size may be checked */
3438     if (url_open_dyn_packet_buf(&ctx->pb, max_packet_size) < 0) {
3439         /* XXX: close stream */
3440         goto fail;
3441     }
3442     av_set_parameters(ctx, NULL);
3443     if (av_write_header(ctx) < 0) {
3444     fail:
3445         if (h)
3446             url_close(h);
3447         av_free(ctx);
3448         return -1;
3449     }
3450     url_close_dyn_buf(ctx->pb, &dummy_buf);
3451     av_free(dummy_buf);
3452
3453     c->rtp_ctx[stream_index] = ctx;
3454     return 0;
3455 }
3456
3457 /********************************************************************/
3458 /* ffserver initialization */
3459
3460 static AVStream *add_av_stream1(FFStream *stream, AVCodecContext *codec, int copy)
3461 {
3462     AVStream *fst;
3463
3464     fst = av_mallocz(sizeof(AVStream));
3465     if (!fst)
3466         return NULL;
3467     if (copy) {
3468         fst->codec= avcodec_alloc_context();
3469         memcpy(fst->codec, codec, sizeof(AVCodecContext));
3470         if (codec->extradata_size) {
3471             fst->codec->extradata = av_malloc(codec->extradata_size);
3472             memcpy(fst->codec->extradata, codec->extradata,
3473                 codec->extradata_size);
3474         }
3475     } else {
3476         /* live streams must use the actual feed's codec since it may be
3477          * updated later to carry extradata needed by the streams.
3478          */
3479         fst->codec = codec;
3480     }
3481     fst->priv_data = av_mallocz(sizeof(FeedData));
3482     fst->index = stream->nb_streams;
3483     av_set_pts_info(fst, 33, 1, 90000);
3484     stream->streams[stream->nb_streams++] = fst;
3485     return fst;
3486 }
3487
3488 /* return the stream number in the feed */
3489 static int add_av_stream(FFStream *feed, AVStream *st)
3490 {
3491     AVStream *fst;
3492     AVCodecContext *av, *av1;
3493     int i;
3494
3495     av = st->codec;
3496     for(i=0;i<feed->nb_streams;i++) {
3497         st = feed->streams[i];
3498         av1 = st->codec;
3499         if (av1->codec_id == av->codec_id &&
3500             av1->codec_type == av->codec_type &&
3501             av1->bit_rate == av->bit_rate) {
3502
3503             switch(av->codec_type) {
3504             case AVMEDIA_TYPE_AUDIO:
3505                 if (av1->channels == av->channels &&
3506                     av1->sample_rate == av->sample_rate)
3507                     goto found;
3508                 break;
3509             case AVMEDIA_TYPE_VIDEO:
3510                 if (av1->width == av->width &&
3511                     av1->height == av->height &&
3512                     av1->time_base.den == av->time_base.den &&
3513                     av1->time_base.num == av->time_base.num &&
3514                     av1->gop_size == av->gop_size)
3515                     goto found;
3516                 break;
3517             default:
3518                 abort();
3519             }
3520         }
3521     }
3522
3523     fst = add_av_stream1(feed, av, 0);
3524     if (!fst)
3525         return -1;
3526     return feed->nb_streams - 1;
3527  found:
3528     return i;
3529 }
3530
3531 static void remove_stream(FFStream *stream)
3532 {
3533     FFStream **ps;
3534     ps = &first_stream;
3535     while (*ps != NULL) {
3536         if (*ps == stream)
3537             *ps = (*ps)->next;
3538         else
3539             ps = &(*ps)->next;
3540     }
3541 }
3542
3543 /* specific mpeg4 handling : we extract the raw parameters */
3544 static void extract_mpeg4_header(AVFormatContext *infile)
3545 {
3546     int mpeg4_count, i, size;
3547     AVPacket pkt;
3548     AVStream *st;
3549     const uint8_t *p;
3550
3551     mpeg4_count = 0;
3552     for(i=0;i<infile->nb_streams;i++) {
3553         st = infile->streams[i];
3554         if (st->codec->codec_id == CODEC_ID_MPEG4 &&
3555             st->codec->extradata_size == 0) {
3556             mpeg4_count++;
3557         }
3558     }
3559     if (!mpeg4_count)
3560         return;
3561
3562     printf("MPEG4 without extra data: trying to find header in %s\n", infile->filename);
3563     while (mpeg4_count > 0) {
3564         if (av_read_packet(infile, &pkt) < 0)
3565             break;
3566         st = infile->streams[pkt.stream_index];
3567         if (st->codec->codec_id == CODEC_ID_MPEG4 &&
3568             st->codec->extradata_size == 0) {
3569             av_freep(&st->codec->extradata);
3570             /* fill extradata with the header */
3571             /* XXX: we make hard suppositions here ! */
3572             p = pkt.data;
3573             while (p < pkt.data + pkt.size - 4) {
3574                 /* stop when vop header is found */
3575                 if (p[0] == 0x00 && p[1] == 0x00 &&
3576                     p[2] == 0x01 && p[3] == 0xb6) {
3577                     size = p - pkt.data;
3578                     //                    av_hex_dump_log(infile, AV_LOG_DEBUG, pkt.data, size);
3579                     st->codec->extradata = av_malloc(size);
3580                     st->codec->extradata_size = size;
3581                     memcpy(st->codec->extradata, pkt.data, size);
3582                     break;
3583                 }
3584                 p++;
3585             }
3586             mpeg4_count--;
3587         }
3588         av_free_packet(&pkt);
3589     }
3590 }
3591
3592 /* compute the needed AVStream for each file */
3593 static void build_file_streams(void)
3594 {
3595     FFStream *stream, *stream_next;
3596     AVFormatContext *infile;
3597     int i, ret;
3598
3599     /* gather all streams */
3600     for(stream = first_stream; stream != NULL; stream = stream_next) {
3601         stream_next = stream->next;
3602         if (stream->stream_type == STREAM_TYPE_LIVE &&
3603             !stream->feed) {
3604             /* the stream comes from a file */
3605             /* try to open the file */
3606             /* open stream */
3607             stream->ap_in = av_mallocz(sizeof(AVFormatParameters));
3608             if (stream->fmt && !strcmp(stream->fmt->name, "rtp")) {
3609                 /* specific case : if transport stream output to RTP,
3610                    we use a raw transport stream reader */
3611                 stream->ap_in->mpeg2ts_raw = 1;
3612                 stream->ap_in->mpeg2ts_compute_pcr = 1;
3613             }
3614
3615             http_log("Opening file '%s'\n", stream->feed_filename);
3616             if ((ret = av_open_input_file(&infile, stream->feed_filename,
3617                                           stream->ifmt, 0, stream->ap_in)) < 0) {
3618                 http_log("Could not open '%s': %d\n", stream->feed_filename, ret);
3619                 /* remove stream (no need to spend more time on it) */
3620             fail:
3621                 remove_stream(stream);
3622             } else {
3623                 /* find all the AVStreams inside and reference them in
3624                    'stream' */
3625                 if (av_find_stream_info(infile) < 0) {
3626                     http_log("Could not find codec parameters from '%s'\n",
3627                              stream->feed_filename);
3628                     av_close_input_file(infile);
3629                     goto fail;
3630                 }
3631                 extract_mpeg4_header(infile);
3632
3633                 for(i=0;i<infile->nb_streams;i++)
3634                     add_av_stream1(stream, infile->streams[i]->codec, 1);
3635
3636                 av_close_input_file(infile);
3637             }
3638         }
3639     }
3640 }
3641
3642 /* compute the needed AVStream for each feed */
3643 static void build_feed_streams(void)
3644 {
3645     FFStream *stream, *feed;
3646     int i;
3647
3648     /* gather all streams */
3649     for(stream = first_stream; stream != NULL; stream = stream->next) {
3650         feed = stream->feed;
3651         if (feed) {
3652             if (!stream->is_feed) {
3653                 /* we handle a stream coming from a feed */
3654                 for(i=0;i<stream->nb_streams;i++)
3655                     stream->feed_streams[i] = add_av_stream(feed, stream->streams[i]);
3656             }
3657         }
3658     }
3659
3660     /* gather all streams */
3661     for(stream = first_stream; stream != NULL; stream = stream->next) {
3662         feed = stream->feed;
3663         if (feed) {
3664             if (stream->is_feed) {
3665                 for(i=0;i<stream->nb_streams;i++)
3666                     stream->feed_streams[i] = i;
3667             }
3668         }
3669     }
3670
3671     /* create feed files if needed */
3672     for(feed = first_feed; feed != NULL; feed = feed->next_feed) {
3673         int fd;
3674
3675         if (url_exist(feed->feed_filename)) {
3676             /* See if it matches */
3677             AVFormatContext *s;
3678             int matches = 0;
3679
3680             if (av_open_input_file(&s, feed->feed_filename, NULL, FFM_PACKET_SIZE, NULL) >= 0) {
3681                 /* Now see if it matches */
3682                 if (s->nb_streams == feed->nb_streams) {
3683                     matches = 1;
3684                     for(i=0;i<s->nb_streams;i++) {
3685                         AVStream *sf, *ss;
3686                         sf = feed->streams[i];
3687                         ss = s->streams[i];
3688
3689                         if (sf->index != ss->index ||
3690                             sf->id != ss->id) {
3691                             http_log("Index & Id do not match for stream %d (%s)\n",
3692                                    i, feed->feed_filename);
3693                             matches = 0;
3694                         } else {
3695                             AVCodecContext *ccf, *ccs;
3696
3697                             ccf = sf->codec;
3698                             ccs = ss->codec;
3699 #define CHECK_CODEC(x)  (ccf->x != ccs->x)
3700
3701                             if (CHECK_CODEC(codec_id) || CHECK_CODEC(codec_type)) {
3702                                 http_log("Codecs do not match for stream %d\n", i);
3703                                 matches = 0;
3704                             } else if (CHECK_CODEC(bit_rate) || CHECK_CODEC(flags)) {
3705                                 http_log("Codec bitrates do not match for stream %d\n", i);
3706                                 matches = 0;
3707                             } else if (ccf->codec_type == AVMEDIA_TYPE_VIDEO) {
3708                                 if (CHECK_CODEC(time_base.den) ||
3709                                     CHECK_CODEC(time_base.num) ||
3710                                     CHECK_CODEC(width) ||
3711                                     CHECK_CODEC(height)) {
3712                                     http_log("Codec width, height and framerate do not match for stream %d\n", i);
3713                                     matches = 0;
3714                                 }
3715                             } else if (ccf->codec_type == AVMEDIA_TYPE_AUDIO) {
3716                                 if (CHECK_CODEC(sample_rate) ||
3717                                     CHECK_CODEC(channels) ||
3718                                     CHECK_CODEC(frame_size)) {
3719                                     http_log("Codec sample_rate, channels, frame_size do not match for stream %d\n", i);
3720                                     matches = 0;
3721                                 }
3722                             } else {
3723                                 http_log("Unknown codec type\n");
3724                                 matches = 0;
3725                             }
3726                         }
3727                         if (!matches)
3728                             break;
3729                     }
3730                 } else
3731                     http_log("Deleting feed file '%s' as stream counts differ (%d != %d)\n",
3732                         feed->feed_filename, s->nb_streams, feed->nb_streams);
3733
3734                 av_close_input_file(s);
3735             } else
3736                 http_log("Deleting feed file '%s' as it appears to be corrupt\n",
3737                         feed->feed_filename);
3738
3739             if (!matches) {
3740                 if (feed->readonly) {
3741                     http_log("Unable to delete feed file '%s' as it is marked readonly\n",
3742                         feed->feed_filename);
3743                     exit(1);
3744                 }
3745                 unlink(feed->feed_filename);
3746             }
3747         }
3748         if (!url_exist(feed->feed_filename)) {
3749             AVFormatContext s1 = {0}, *s = &s1;
3750
3751             if (feed->readonly) {
3752                 http_log("Unable to create feed file '%s' as it is marked readonly\n",
3753                     feed->feed_filename);
3754                 exit(1);
3755             }
3756
3757             /* only write the header of the ffm file */
3758             if (url_fopen(&s->pb, feed->feed_filename, URL_WRONLY) < 0) {
3759                 http_log("Could not open output feed file '%s'\n",
3760                          feed->feed_filename);
3761                 exit(1);
3762             }
3763             s->oformat = feed->fmt;
3764             s->nb_streams = feed->nb_streams;
3765             for(i=0;i<s->nb_streams;i++) {
3766                 AVStream *st;
3767                 st = feed->streams[i];
3768                 s->streams[i] = st;
3769             }
3770             av_set_parameters(s, NULL);
3771             if (av_write_header(s) < 0) {
3772                 http_log("Container doesn't supports the required parameters\n");
3773                 exit(1);
3774             }
3775             /* XXX: need better api */
3776             av_freep(&s->priv_data);
3777             url_fclose(s->pb);
3778         }
3779         /* get feed size and write index */
3780         fd = open(feed->feed_filename, O_RDONLY);
3781         if (fd < 0) {
3782             http_log("Could not open output feed file '%s'\n",
3783                     feed->feed_filename);
3784             exit(1);
3785         }
3786
3787         feed->feed_write_index = FFMAX(ffm_read_write_index(fd), FFM_PACKET_SIZE);
3788         feed->feed_size = lseek(fd, 0, SEEK_END);
3789         /* ensure that we do not wrap before the end of file */
3790         if (feed->feed_max_size && feed->feed_max_size < feed->feed_size)
3791             feed->feed_max_size = feed->feed_size;
3792
3793         close(fd);
3794     }
3795 }
3796
3797 /* compute the bandwidth used by each stream */
3798 static void compute_bandwidth(void)
3799 {
3800     unsigned bandwidth;
3801     int i;
3802     FFStream *stream;
3803
3804     for(stream = first_stream; stream != NULL; stream = stream->next) {
3805         bandwidth = 0;
3806         for(i=0;i<stream->nb_streams;i++) {
3807             AVStream *st = stream->streams[i];
3808             switch(st->codec->codec_type) {
3809             case AVMEDIA_TYPE_AUDIO:
3810             case AVMEDIA_TYPE_VIDEO:
3811                 bandwidth += st->codec->bit_rate;
3812                 break;
3813             default:
3814                 break;
3815             }
3816         }
3817         stream->bandwidth = (bandwidth + 999) / 1000;
3818     }
3819 }
3820
3821 /* add a codec and set the default parameters */
3822 static void add_codec(FFStream *stream, AVCodecContext *av)
3823 {
3824     AVStream *st;
3825
3826     /* compute default parameters */
3827     switch(av->codec_type) {
3828     case AVMEDIA_TYPE_AUDIO:
3829         if (av->bit_rate == 0)
3830             av->bit_rate = 64000;
3831         if (av->sample_rate == 0)
3832             av->sample_rate = 22050;
3833         if (av->channels == 0)
3834             av->channels = 1;
3835         break;
3836     case AVMEDIA_TYPE_VIDEO:
3837         if (av->bit_rate == 0)
3838             av->bit_rate = 64000;
3839         if (av->time_base.num == 0){
3840             av->time_base.den = 5;
3841             av->time_base.num = 1;
3842         }
3843         if (av->width == 0 || av->height == 0) {
3844             av->width = 160;
3845             av->height = 128;
3846         }
3847         /* Bitrate tolerance is less for streaming */
3848         if (av->bit_rate_tolerance == 0)
3849             av->bit_rate_tolerance = FFMAX(av->bit_rate / 4,
3850                       (int64_t)av->bit_rate*av->time_base.num/av->time_base.den);
3851         if (av->qmin == 0)
3852             av->qmin = 3;
3853         if (av->qmax == 0)
3854             av->qmax = 31;
3855         if (av->max_qdiff == 0)
3856             av->max_qdiff = 3;
3857         av->qcompress = 0.5;
3858         av->qblur = 0.5;
3859
3860         if (!av->nsse_weight)
3861             av->nsse_weight = 8;
3862
3863         av->frame_skip_cmp = FF_CMP_DCTMAX;
3864         if (!av->me_method)
3865             av->me_method = ME_EPZS;
3866         av->rc_buffer_aggressivity = 1.0;
3867
3868         if (!av->rc_eq)
3869             av->rc_eq = "tex^qComp";
3870         if (!av->i_quant_factor)
3871             av->i_quant_factor = -0.8;
3872         if (!av->b_quant_factor)
3873             av->b_quant_factor = 1.25;
3874         if (!av->b_quant_offset)
3875             av->b_quant_offset = 1.25;
3876         if (!av->rc_max_rate)
3877             av->rc_max_rate = av->bit_rate * 2;
3878
3879         if (av->rc_max_rate && !av->rc_buffer_size) {
3880             av->rc_buffer_size = av->rc_max_rate;
3881         }
3882
3883
3884         break;
3885     default:
3886         abort();
3887     }
3888
3889     st = av_mallocz(sizeof(AVStream));
3890     if (!st)
3891         return;
3892     st->codec = avcodec_alloc_context();
3893     stream->streams[stream->nb_streams++] = st;
3894     memcpy(st->codec, av, sizeof(AVCodecContext));
3895 }
3896
3897 static enum CodecID opt_audio_codec(const char *arg)
3898 {
3899     AVCodec *p= avcodec_find_encoder_by_name(arg);
3900
3901     if (p == NULL || p->type != AVMEDIA_TYPE_AUDIO)
3902         return CODEC_ID_NONE;
3903
3904     return p->id;
3905 }
3906
3907 static enum CodecID opt_video_codec(const char *arg)
3908 {
3909     AVCodec *p= avcodec_find_encoder_by_name(arg);
3910
3911     if (p == NULL || p->type != AVMEDIA_TYPE_VIDEO)
3912         return CODEC_ID_NONE;
3913
3914     return p->id;
3915 }
3916
3917 /* simplistic plugin support */
3918
3919 #if HAVE_DLOPEN
3920 static void load_module(const char *filename)
3921 {
3922     void *dll;
3923     void (*init_func)(void);
3924     dll = dlopen(filename, RTLD_NOW);
3925     if (!dll) {
3926         fprintf(stderr, "Could not load module '%s' - %s\n",
3927                 filename, dlerror());
3928         return;
3929     }
3930
3931     init_func = dlsym(dll, "ffserver_module_init");
3932     if (!init_func) {
3933         fprintf(stderr,
3934                 "%s: init function 'ffserver_module_init()' not found\n",
3935                 filename);
3936         dlclose(dll);
3937     }
3938
3939     init_func();
3940 }
3941 #endif
3942
3943 static int ffserver_opt_default(const char *opt, const char *arg,
3944                        AVCodecContext *avctx, int type)
3945 {
3946     int ret = 0;
3947     const AVOption *o = av_find_opt(avctx, opt, NULL, type, type);
3948     if(o)
3949         ret = av_set_string3(avctx, opt, arg, 1, NULL);
3950     return ret;
3951 }
3952
3953 static AVOutputFormat *ffserver_guess_format(const char *short_name, const char *filename,
3954                                              const char *mime_type)
3955 {
3956     AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
3957
3958     if (fmt) {
3959         AVOutputFormat *stream_fmt;
3960         char stream_format_name[64];
3961
3962         snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
3963         stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
3964
3965         if (stream_fmt)
3966             fmt = stream_fmt;
3967     }
3968
3969     return fmt;
3970 }
3971
3972 static void report_config_error(const char *filename, int line_num, int *errors, const char *fmt, ...)
3973 {
3974     va_list vl;
3975     va_start(vl, fmt);
3976     fprintf(stderr, "%s:%d: ", filename, line_num);
3977     vfprintf(stderr, fmt, vl);
3978     va_end(vl);
3979
3980     (*errors)++;
3981 }
3982
3983 static int parse_ffconfig(const char *filename)
3984 {
3985     FILE *f;
3986     char line[1024];
3987     char cmd[64];
3988     char arg[1024];
3989     const char *p;
3990     int val, errors, line_num;
3991     FFStream **last_stream, *stream, *redirect;
3992     FFStream **last_feed, *feed, *s;
3993     AVCodecContext audio_enc, video_enc;
3994     enum CodecID audio_id, video_id;
3995
3996     f = fopen(filename, "r");
3997     if (!f) {
3998         perror(filename);
3999         return -1;
4000     }
4001
4002     errors = 0;
4003     line_num = 0;
4004     first_stream = NULL;
4005     last_stream = &first_stream;
4006     first_feed = NULL;
4007     last_feed = &first_feed;
4008     stream = NULL;
4009     feed = NULL;
4010     redirect = NULL;
4011     audio_id = CODEC_ID_NONE;
4012     video_id = CODEC_ID_NONE;
4013
4014 #define ERROR(...) report_config_error(filename, line_num, &errors, __VA_ARGS__)
4015     for(;;) {
4016         if (fgets(line, sizeof(line), f) == NULL)
4017             break;
4018         line_num++;
4019         p = line;
4020         while (isspace(*p))
4021             p++;
4022         if (*p == '\0' || *p == '#')
4023             continue;
4024
4025         get_arg(cmd, sizeof(cmd), &p);
4026
4027         if (!strcasecmp(cmd, "Port")) {
4028             get_arg(arg, sizeof(arg), &p);
4029             val = atoi(arg);
4030             if (val < 1 || val > 65536) {
4031                 ERROR("Invalid_port: %s\n", arg);
4032             }
4033             my_http_addr.sin_port = htons(val);
4034         } else if (!strcasecmp(cmd, "BindAddress")) {
4035             get_arg(arg, sizeof(arg), &p);
4036             if (resolve_host(&my_http_addr.sin_addr, arg) != 0) {
4037                 ERROR("%s:%d: Invalid host/IP address: %s\n", arg);
4038             }
4039         } else if (!strcasecmp(cmd, "NoDaemon")) {
4040             ffserver_daemon = 0;
4041         } else if (!strcasecmp(cmd, "RTSPPort")) {
4042             get_arg(arg, sizeof(arg), &p);
4043             val = atoi(arg);
4044             if (val < 1 || val > 65536) {
4045                 ERROR("%s:%d: Invalid port: %s\n", arg);
4046             }
4047             my_rtsp_addr.sin_port = htons(atoi(arg));
4048         } else if (!strcasecmp(cmd, "RTSPBindAddress")) {
4049             get_arg(arg, sizeof(arg), &p);
4050             if (resolve_host(&my_rtsp_addr.sin_addr, arg) != 0) {
4051                 ERROR("Invalid host/IP address: %s\n", arg);
4052             }
4053         } else if (!strcasecmp(cmd, "MaxHTTPConnections")) {
4054             get_arg(arg, sizeof(arg), &p);
4055             val = atoi(arg);
4056             if (val < 1 || val > 65536) {
4057                 ERROR("Invalid MaxHTTPConnections: %s\n", arg);
4058             }
4059             nb_max_http_connections = val;
4060         } else if (!strcasecmp(cmd, "MaxClients")) {
4061             get_arg(arg, sizeof(arg), &p);
4062             val = atoi(arg);
4063             if (val < 1 || val > nb_max_http_connections) {
4064                 ERROR("Invalid MaxClients: %s\n", arg);
4065             } else {
4066                 nb_max_connections = val;
4067             }
4068         } else if (!strcasecmp(cmd, "MaxBandwidth")) {
4069             int64_t llval;
4070             get_arg(arg, sizeof(arg), &p);
4071             llval = atoll(arg);
4072             if (llval < 10 || llval > 10000000) {
4073                 ERROR("Invalid MaxBandwidth: %s\n", arg);
4074             } else
4075                 max_bandwidth = llval;
4076         } else if (!strcasecmp(cmd, "CustomLog")) {
4077             if (!ffserver_debug)
4078                 get_arg(logfilename, sizeof(logfilename), &p);
4079         } else if (!strcasecmp(cmd, "<Feed")) {
4080             /*********************************************/
4081             /* Feed related options */
4082             char *q;
4083             if (stream || feed) {
4084                 ERROR("Already in a tag\n");
4085             } else {
4086                 feed = av_mallocz(sizeof(FFStream));
4087                 get_arg(feed->filename, sizeof(feed->filename), &p);
4088                 q = strrchr(feed->filename, '>');
4089                 if (*q)
4090                     *q = '\0';
4091
4092                 for (s = first_feed; s; s = s->next) {
4093                     if (!strcmp(feed->filename, s->filename)) {
4094                         ERROR("Feed '%s' already registered\n", s->filename);
4095                     }
4096                 }
4097
4098                 feed->fmt = av_guess_format("ffm", NULL, NULL);
4099                 /* defaut feed file */
4100                 snprintf(feed->feed_filename, sizeof(feed->feed_filename),
4101                          "/tmp/%s.ffm", feed->filename);
4102                 feed->feed_max_size = 5 * 1024 * 1024;
4103                 feed->is_feed = 1;
4104                 feed->feed = feed; /* self feeding :-) */
4105
4106                 /* add in stream list */
4107                 *last_stream = feed;
4108                 last_stream = &feed->next;
4109                 /* add in feed list */
4110                 *last_feed = feed;
4111                 last_feed = &feed->next_feed;
4112             }
4113         } else if (!strcasecmp(cmd, "Launch")) {
4114             if (feed) {
4115                 int i;
4116
4117                 feed->child_argv = av_mallocz(64 * sizeof(char *));
4118
4119                 for (i = 0; i < 62; i++) {
4120                     get_arg(arg, sizeof(arg), &p);
4121                     if (!arg[0])
4122                         break;
4123
4124                     feed->child_argv[i] = av_strdup(arg);
4125                 }
4126
4127                 feed->child_argv[i] = av_malloc(30 + strlen(feed->filename));
4128
4129                 snprintf(feed->child_argv[i], 30+strlen(feed->filename),
4130                     "http://%s:%d/%s",
4131                         (my_http_addr.sin_addr.s_addr == INADDR_ANY) ? "127.0.0.1" :
4132                     inet_ntoa(my_http_addr.sin_addr),
4133                     ntohs(my_http_addr.sin_port), feed->filename);
4134             }
4135         } else if (!strcasecmp(cmd, "ReadOnlyFile")) {
4136             if (feed) {
4137                 get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
4138                 feed->readonly = 1;
4139             } else if (stream) {
4140                 get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
4141             }
4142         } else if (!strcasecmp(cmd, "File")) {
4143             if (feed) {
4144                 get_arg(feed->feed_filename, sizeof(feed->feed_filename), &p);
4145             } else if (stream)
4146                 get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
4147         } else if (!strcasecmp(cmd, "Truncate")) {
4148             if (feed) {
4149                 get_arg(arg, sizeof(arg), &p);
4150                 feed->truncate = strtod(arg, NULL);
4151             }
4152         } else if (!strcasecmp(cmd, "FileMaxSize")) {
4153             if (feed) {
4154                 char *p1;
4155                 double fsize;
4156
4157                 get_arg(arg, sizeof(arg), &p);
4158                 p1 = arg;
4159                 fsize = strtod(p1, &p1);
4160                 switch(toupper(*p1)) {
4161                 case 'K':
4162                     fsize *= 1024;
4163                     break;
4164                 case 'M':
4165                     fsize *= 1024 * 1024;
4166                     break;
4167                 case 'G':
4168                     fsize *= 1024 * 1024 * 1024;
4169                     break;
4170                 }
4171                 feed->feed_max_size = (int64_t)fsize;
4172                 if (feed->feed_max_size < FFM_PACKET_SIZE*4) {
4173                     ERROR("Feed max file size is too small, must be at least %d\n", FFM_PACKET_SIZE*4);
4174                 }
4175             }
4176         } else if (!strcasecmp(cmd, "</Feed>")) {
4177             if (!feed) {
4178                 ERROR("No corresponding <Feed> for </Feed>\n");
4179             }
4180             feed = NULL;
4181         } else if (!strcasecmp(cmd, "<Stream")) {
4182             /*********************************************/
4183             /* Stream related options */
4184             char *q;
4185             if (stream || feed) {
4186                 ERROR("Already in a tag\n");
4187             } else {
4188                 FFStream *s;
4189                 stream = av_mallocz(sizeof(FFStream));
4190                 get_arg(stream->filename, sizeof(stream->filename), &p);
4191                 q = strrchr(stream->filename, '>');
4192                 if (*q)
4193                     *q = '\0';
4194
4195                 for (s = first_stream; s; s = s->next) {
4196                     if (!strcmp(stream->filename, s->filename)) {
4197                         ERROR("Stream '%s' already registered\n", s->filename);
4198                     }
4199                 }
4200
4201                 stream->fmt = ffserver_guess_format(NULL, stream->filename, NULL);
4202                 avcodec_get_context_defaults2(&video_enc, AVMEDIA_TYPE_VIDEO);
4203                 avcodec_get_context_defaults2(&audio_enc, AVMEDIA_TYPE_AUDIO);
4204                 audio_id = CODEC_ID_NONE;
4205                 video_id = CODEC_ID_NONE;
4206                 if (stream->fmt) {
4207                     audio_id = stream->fmt->audio_codec;
4208                     video_id = stream->fmt->video_codec;
4209                 }
4210
4211                 *last_stream = stream;
4212                 last_stream = &stream->next;
4213             }
4214         } else if (!strcasecmp(cmd, "Feed")) {
4215             get_arg(arg, sizeof(arg), &p);
4216             if (stream) {
4217                 FFStream *sfeed;
4218
4219                 sfeed = first_feed;
4220                 while (sfeed != NULL) {
4221                     if (!strcmp(sfeed->filename, arg))
4222                         break;
4223                     sfeed = sfeed->next_feed;
4224                 }
4225                 if (!sfeed)
4226                     ERROR("feed '%s' not defined\n", arg);
4227                 else
4228                     stream->feed = sfeed;
4229             }
4230         } else if (!strcasecmp(cmd, "Format")) {
4231             get_arg(arg, sizeof(arg), &p);
4232             if (stream) {
4233                 if (!strcmp(arg, "status")) {
4234                     stream->stream_type = STREAM_TYPE_STATUS;
4235                     stream->fmt = NULL;
4236                 } else {
4237                     stream->stream_type = STREAM_TYPE_LIVE;
4238                     /* jpeg cannot be used here, so use single frame jpeg */
4239                     if (!strcmp(arg, "jpeg"))
4240                         strcpy(arg, "mjpeg");
4241                     stream->fmt = ffserver_guess_format(arg, NULL, NULL);
4242                     if (!stream->fmt) {
4243                         ERROR("Unknown Format: %s\n", arg);
4244                     }
4245                 }
4246                 if (stream->fmt) {
4247                     audio_id = stream->fmt->audio_codec;
4248                     video_id = stream->fmt->video_codec;
4249                 }
4250             }
4251         } else if (!strcasecmp(cmd, "InputFormat")) {
4252             get_arg(arg, sizeof(arg), &p);
4253             if (stream) {
4254                 stream->ifmt = av_find_input_format(arg);
4255                 if (!stream->ifmt) {
4256                     ERROR("Unknown input format: %s\n", arg);
4257                 }
4258             }
4259         } else if (!strcasecmp(cmd, "FaviconURL")) {
4260             if (stream && stream->stream_type == STREAM_TYPE_STATUS) {
4261                 get_arg(stream->feed_filename, sizeof(stream->feed_filename), &p);
4262             } else {
4263                 ERROR("FaviconURL only permitted for status streams\n");
4264             }
4265         } else if (!strcasecmp(cmd, "Author")) {
4266             if (stream)
4267                 get_arg(stream->author, sizeof(stream->author), &p);
4268         } else if (!strcasecmp(cmd, "Comment")) {
4269             if (stream)
4270                 get_arg(stream->comment, sizeof(stream->comment), &p);
4271         } else if (!strcasecmp(cmd, "Copyright")) {
4272             if (stream)
4273                 get_arg(stream->copyright, sizeof(stream->copyright), &p);
4274         } else if (!strcasecmp(cmd, "Title")) {
4275             if (stream)
4276                 get_arg(stream->title, sizeof(stream->title), &p);
4277         } else if (!strcasecmp(cmd, "Preroll")) {
4278             get_arg(arg, sizeof(arg), &p);
4279             if (stream)
4280                 stream->prebuffer = atof(arg) * 1000;
4281         } else if (!strcasecmp(cmd, "StartSendOnKey")) {
4282             if (stream)
4283                 stream->send_on_key = 1;