Link xvmc vout with libXxf86vm when available
[vlc.git] / src / network / httpd.c
1 /*****************************************************************************
2  * httpd.c
3  *****************************************************************************
4  * Copyright (C) 2004-2006 the VideoLAN team
5  * Copyright © 2004-2007 Rémi Denis-Courmont
6  * $Id$
7  *
8  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9  *          Rémi Denis-Courmont <rem # videolan.org>
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24  *****************************************************************************/
25
26 #ifdef HAVE_CONFIG_H
27 # include "config.h"
28 #endif
29
30 #include <vlc/vlc.h>
31 #include <vlc_httpd.h>
32
33 #ifdef ENABLE_HTTPD
34
35 #include <assert.h>
36
37 #include <vlc_network.h>
38 #include <vlc_tls.h>
39 #include <vlc_acl.h>
40 #include <vlc_strings.h>
41 #include "../libvlc.h"
42
43 #include <string.h>
44 #include <errno.h>
45
46 #ifdef HAVE_UNISTD_H
47 #   include <unistd.h>
48 #endif
49
50 #ifdef HAVE_FCNTL_H
51 #   include <fcntl.h>
52 #endif
53
54 #ifdef HAVE_POLL
55 # include <poll.h>
56 #endif
57
58 #if defined( UNDER_CE )
59 #   include <winsock.h>
60 #elif defined( WIN32 )
61 #   include <winsock2.h>
62 #else
63 #   include <sys/socket.h>
64 #endif
65
66 #if defined( WIN32 )
67 /* We need HUGE buffer otherwise TCP throughput is very limited */
68 #define HTTPD_CL_BUFSIZE 1000000
69 #else
70 #define HTTPD_CL_BUFSIZE 10000
71 #endif
72
73 static void httpd_ClientClean( httpd_client_t *cl );
74
75 struct httpd_t
76 {
77     VLC_COMMON_MEMBERS
78
79     int          i_host;
80     httpd_host_t **host;
81 };
82
83
84 /* each host run in his own thread */
85 struct httpd_host_t
86 {
87     VLC_COMMON_MEMBERS
88
89     httpd_t     *httpd;
90
91     /* ref count */
92     int         i_ref;
93
94     /* address/port and socket for listening at connections */
95     char        *psz_hostname;
96     int         i_port;
97     int         *fds;
98     unsigned     nfd;
99
100     vlc_mutex_t lock;
101
102     /* all registered url (becarefull that 2 httpd_url_t could point at the same url)
103      * This will slow down the url research but make my live easier
104      * All url will have their cb trigger, but only the first one can answer
105      * */
106     int         i_url;
107     httpd_url_t **url;
108
109     int            i_client;
110     httpd_client_t **client;
111
112     /* TLS data */
113     tls_server_t *p_tls;
114 };
115
116
117 struct httpd_url_t
118 {
119     httpd_host_t *host;
120
121     vlc_mutex_t lock;
122
123     char      *psz_url;
124     char      *psz_user;
125     char      *psz_password;
126     vlc_acl_t *p_acl;
127
128     struct
129     {
130         httpd_callback_t     cb;
131         httpd_callback_sys_t *p_sys;
132     } catch[HTTPD_MSG_MAX];
133 };
134
135 /* status */
136 enum
137 {
138     HTTPD_CLIENT_RECEIVING,
139     HTTPD_CLIENT_RECEIVE_DONE,
140
141     HTTPD_CLIENT_SENDING,
142     HTTPD_CLIENT_SEND_DONE,
143
144     HTTPD_CLIENT_WAITING,
145
146     HTTPD_CLIENT_DEAD,
147
148     HTTPD_CLIENT_TLS_HS_IN,
149     HTTPD_CLIENT_TLS_HS_OUT
150 };
151
152 /* mode */
153 enum
154 {
155     HTTPD_CLIENT_FILE,      /* default */
156     HTTPD_CLIENT_STREAM,    /* regulary get data from cb */
157     HTTPD_CLIENT_BIDIR,     /* check for reading and get data from cb */
158 };
159
160 struct httpd_client_t
161 {
162     httpd_url_t *url;
163
164     int     i_ref;
165
166     int     fd;
167
168     int     i_mode;
169     int     i_state;
170     int     b_read_waiting; /* stop as soon as possible sending */
171
172     mtime_t i_activity_date;
173     mtime_t i_activity_timeout;
174
175     /* buffer for reading header */
176     int     i_buffer_size;
177     int     i_buffer;
178     uint8_t *p_buffer;
179
180     /* */
181     httpd_message_t query;  /* client -> httpd */
182     httpd_message_t answer; /* httpd -> client */
183
184     /* TLS data */
185     tls_session_t *p_tls;
186 };
187
188
189 /*****************************************************************************
190  * Various functions
191  *****************************************************************************/
192 static struct
193 {
194     const char psz_ext[8];
195     const char *psz_mime;
196 } http_mime[] =
197 {
198     { ".htm",   "text/html" },
199     { ".html",  "text/html" },
200     { ".txt",   "text/plain" },
201     { ".xml",   "text/xml" },
202     { ".dtd",   "text/dtd" },
203
204     { ".css",   "text/css" },
205
206     /* image mime */
207     { ".gif",   "image/gif" },
208     { ".jpe",   "image/jpeg" },
209     { ".jpg",   "image/jpeg" },
210     { ".jpeg",  "image/jpeg" },
211     { ".png",   "image/png" },
212     /* same as modules/mux/mpjpeg.c here: */
213     { ".mpjpeg","multipart/x-mixed-replace; boundary=7b3cc56e5f51db803f790dad720ed50a" },
214
215     /* media mime */
216     { ".avi",   "video/avi" },
217     { ".asf",   "video/x-ms-asf" },
218     { ".m1a",   "audio/mpeg" },
219     { ".m2a",   "audio/mpeg" },
220     { ".m1v",   "video/mpeg" },
221     { ".m2v",   "video/mpeg" },
222     { ".mp2",   "audio/mpeg" },
223     { ".mp3",   "audio/mpeg" },
224     { ".mpa",   "audio/mpeg" },
225     { ".mpg",   "video/mpeg" },
226     { ".mpeg",  "video/mpeg" },
227     { ".mpe",   "video/mpeg" },
228     { ".mov",   "video/quicktime" },
229     { ".moov",  "video/quicktime" },
230     { ".ogg",   "application/ogg" },
231     { ".ogm",   "application/ogg" },
232     { ".wav",   "audio/wav" },
233     { ".wma",   "audio/x-ms-wma" },
234     { ".wmv",   "video/x-ms-wmv" },
235
236
237     /* end */
238     { "",       "" }
239 };
240
241 static const char *httpd_MimeFromUrl( const char *psz_url )
242 {
243
244     char *psz_ext;
245
246     psz_ext = strrchr( psz_url, '.' );
247     if( psz_ext )
248     {
249         int i;
250
251         for( i = 0; http_mime[i].psz_ext[0] ; i++ )
252         {
253             if( !strcasecmp( http_mime[i].psz_ext, psz_ext ) )
254             {
255                 return http_mime[i].psz_mime;
256             }
257         }
258     }
259     return "application/octet-stream";
260 }
261
262
263 typedef struct
264 {
265     unsigned   i_code;
266     const char psz_reason[36];
267 } http_status_info;
268
269 static const http_status_info http_reason[] =
270 {
271   /*{ 100, "Continue" },
272     { 101, "Switching Protocols" },*/
273     { 200, "OK" },
274   /*{ 201, "Created" },
275     { 202, "Accepted" },
276     { 203, "Non-authoritative information" },
277     { 204, "No content" },
278     { 205, "Reset content" },
279     { 206, "Partial content" },
280     { 250, "Low on storage space" },
281     { 300, "Multiple choices" },*/
282     { 301, "Moved permanently" },
283   /*{ 302, "Moved temporarily" },
284     { 303, "See other" },
285     { 304, "Not modified" },
286     { 305, "Use proxy" },
287     { 307, "Temporary redirect" },
288     { 400, "Bad request" },*/
289     { 401, "Unauthorized" },
290   /*{ 402, "Payment Required" },*/
291     { 403, "Forbidden" },
292     { 404, "Not found" },
293     { 405, "Method not allowed" },
294   /*{ 406, "Not acceptable" },
295     { 407, "Proxy authentication required" },
296     { 408, "Request time-out" },
297     { 409, "Conflict" },
298     { 410, "Gone" },
299     { 411, "Length required" },
300     { 412, "Precondition failed" },
301     { 413, "Request entity too large" },
302     { 414, "Request-URI too large" },
303     { 415, "Unsupported media Type" },
304     { 416, "Requested range not satisfiable" },
305     { 417, "Expectation failed" },
306     { 451, "Parameter not understood" },
307     { 452, "Conference not found" },
308     { 453, "Not enough bandwidth" },*/
309     { 454, "Session not found" },
310   /*{ 455, "Method not valid in this State" },*/
311     { 456, "Header field not valid for resource" },
312   /*{ 457, "Invalid range" },
313     { 458, "Read-only parameter" },*/
314     { 459, "Aggregate operation not allowed" },
315     { 460, "Non-aggregate operation not allowed" },
316     { 461, "Unsupported transport" },
317   /*{ 462, "Destination unreachable" },*/
318     { 500, "Internal server error" },
319     { 501, "Not implemented" },
320   /*{ 502, "Bad gateway" },*/
321     { 503, "Service unavailable" },
322   /*{ 504, "Gateway time-out" },*/
323     { 505, "Protocol version not supported" },
324     { 551, "Option not supported" },
325     { 999, "" }
326 };
327
328 static const char psz_fallback_reason[5][16] =
329 { "Continue", "OK", "Found", "Client error", "Server error" };
330
331 static const char *httpd_ReasonFromCode( unsigned i_code )
332 {
333     const http_status_info *p;
334
335     assert( ( i_code >= 100 ) && ( i_code <= 599 ) );
336
337     for (p = http_reason; i_code > p->i_code; p++);
338
339     if( p->i_code == i_code )
340         return p->psz_reason;
341
342     return psz_fallback_reason[(i_code / 100) - 1];
343 }
344
345
346 static size_t httpd_HtmlError (char **body, int code, const char *url)
347 {
348     const char *errname = httpd_ReasonFromCode (code);
349     assert (errname != NULL);
350
351     int res = asprintf (body,
352         "<?xml version=\"1.0\" encoding=\"ascii\" ?>\n"
353         "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
354         " \"http://www.w3.org/TR/xhtml10/DTD/xhtml10strict.dtd\">\n"
355         "<html lang=\"en\">\n"
356         "<head>\n"
357         "<title>%s</title>\n"
358         "</head>\n"
359         "<body>\n"
360         "<h1>%d %s%s%s%s</h1>\n"
361         "<hr />\n"
362         "<a href=\"http://www.videolan.org\">VideoLAN</a>\n"
363         "</body>\n"
364         "</html>\n", errname, code, errname,
365         (url ? " (" : ""), (url ?: ""), (url ? ")" : ""));
366
367     if (res == -1)
368     {
369         *body = NULL;
370         return 0;
371     }
372
373     return (size_t)res;
374 }
375
376
377 /*****************************************************************************
378  * High Level Functions: httpd_file_t
379  *****************************************************************************/
380 struct httpd_file_t
381 {
382     httpd_url_t *url;
383
384     char *psz_url;
385     char *psz_mime;
386
387     httpd_file_callback_t pf_fill;
388     httpd_file_sys_t      *p_sys;
389
390 };
391
392 static int
393 httpd_FileCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
394                     httpd_message_t *answer, const httpd_message_t *query )
395 {
396     httpd_file_t *file = (httpd_file_t*)p_sys;
397     uint8_t *psz_args = query->psz_args;
398     uint8_t **pp_body, *p_body;
399     const char *psz_connection;
400     int *pi_body, i_body;
401
402     if( answer == NULL || query == NULL )
403     {
404         return VLC_SUCCESS;
405     }
406     answer->i_proto  = HTTPD_PROTO_HTTP;
407     answer->i_version= 1;
408     answer->i_type   = HTTPD_MSG_ANSWER;
409
410     answer->i_status = 200;
411
412     httpd_MsgAdd( answer, "Content-type",  "%s", file->psz_mime );
413     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
414
415     if( query->i_type != HTTPD_MSG_HEAD )
416     {
417         pp_body = &answer->p_body;
418         pi_body = &answer->i_body;
419     }
420     else
421     {
422         /* The file still needs to be executed. */
423         p_body = NULL;
424         i_body = 0;
425         pp_body = &p_body;
426         pi_body = &i_body;
427     }
428
429     if( query->i_type == HTTPD_MSG_POST )
430     {
431         /* msg_Warn not supported */
432     }
433
434     file->pf_fill( file->p_sys, file, psz_args, pp_body, pi_body );
435
436     if( query->i_type == HTTPD_MSG_HEAD && p_body != NULL )
437     {
438         free( p_body );
439     }
440
441     /* We respect client request */
442     psz_connection = httpd_MsgGet( &cl->query, "Connection" );
443     if( psz_connection != NULL )
444     {
445         httpd_MsgAdd( answer, "Connection", "%s", psz_connection );
446     }
447
448     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
449
450     return VLC_SUCCESS;
451 }
452
453 httpd_file_t *httpd_FileNew( httpd_host_t *host,
454                              const char *psz_url, const char *psz_mime,
455                              const char *psz_user, const char *psz_password,
456                              const vlc_acl_t *p_acl, httpd_file_callback_t pf_fill,
457                              httpd_file_sys_t *p_sys )
458 {
459     httpd_file_t *file = malloc( sizeof( httpd_file_t ) );
460
461     if( ( file->url = httpd_UrlNewUnique( host, psz_url, psz_user,
462                                           psz_password, p_acl )
463         ) == NULL )
464     {
465         free( file );
466         return NULL;
467     }
468
469     file->psz_url  = strdup( psz_url );
470     if( psz_mime && *psz_mime )
471     {
472         file->psz_mime = strdup( psz_mime );
473     }
474     else
475     {
476         file->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
477     }
478
479     file->pf_fill = pf_fill;
480     file->p_sys   = p_sys;
481
482     httpd_UrlCatch( file->url, HTTPD_MSG_HEAD, httpd_FileCallBack,
483                     (httpd_callback_sys_t*)file );
484     httpd_UrlCatch( file->url, HTTPD_MSG_GET,  httpd_FileCallBack,
485                     (httpd_callback_sys_t*)file );
486     httpd_UrlCatch( file->url, HTTPD_MSG_POST, httpd_FileCallBack,
487                     (httpd_callback_sys_t*)file );
488
489     return file;
490 }
491
492 httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
493 {
494     httpd_file_sys_t *p_sys = file->p_sys;
495
496     httpd_UrlDelete( file->url );
497
498     free( file->psz_url );
499     free( file->psz_mime );
500
501     free( file );
502
503     return p_sys;
504 }
505
506 /*****************************************************************************
507  * High Level Functions: httpd_handler_t (for CGIs)
508  *****************************************************************************/
509 struct httpd_handler_t
510 {
511     httpd_url_t *url;
512
513     httpd_handler_callback_t pf_fill;
514     httpd_handler_sys_t      *p_sys;
515
516 };
517
518 static int
519 httpd_HandlerCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
520                        httpd_message_t *answer, const httpd_message_t *query )
521 {
522     httpd_handler_t *handler = (httpd_handler_t*)p_sys;
523     uint8_t *psz_args = query->psz_args;
524     char psz_remote_addr[NI_MAXNUMERICHOST];
525
526     if( answer == NULL || query == NULL )
527     {
528         return VLC_SUCCESS;
529     }
530     answer->i_proto  = HTTPD_PROTO_NONE;
531     answer->i_type   = HTTPD_MSG_ANSWER;
532
533     /* We do it ourselves, thanks */
534     answer->i_status = 0;
535
536     if( httpd_ClientIP( cl, psz_remote_addr ) == NULL )
537         *psz_remote_addr = '\0';
538
539     handler->pf_fill( handler->p_sys, handler, query->psz_url, psz_args,
540                       query->i_type, query->p_body, query->i_body,
541                       psz_remote_addr, NULL,
542                       &answer->p_body, &answer->i_body );
543
544     if( query->i_type == HTTPD_MSG_HEAD )
545     {
546         char *p = (char *)answer->p_body;
547
548         /* Looks for end of header (i.e. one empty line) */
549         while ( (p = strchr( p, '\r' )) != NULL )
550         {
551             if( p[1] && p[1] == '\n' && p[2] && p[2] == '\r'
552                  && p[3] && p[3] == '\n' )
553             {
554                 break;
555             }
556         }
557
558         if( p != NULL )
559         {
560             p[4] = '\0';
561             answer->i_body = strlen((char*)answer->p_body) + 1;
562             answer->p_body = realloc( answer->p_body, answer->i_body );
563         }
564     }
565
566     if( strncmp( (char *)answer->p_body, "HTTP/1.", 7 ) )
567     {
568         int i_status, i_headers;
569         char *psz_headers, *psz_new;
570         const char *psz_status;
571
572         if( !strncmp( (char *)answer->p_body, "Status: ", 8 ) )
573         {
574             /* Apache-style */
575             i_status = strtol( (char *)&answer->p_body[8], &psz_headers, 0 );
576             if( *psz_headers ) psz_headers++;
577             if( *psz_headers ) psz_headers++;
578             i_headers = answer->i_body - (psz_headers - (char *)answer->p_body);
579         }
580         else
581         {
582             i_status = 200;
583             psz_headers = (char *)answer->p_body;
584             i_headers = answer->i_body;
585         }
586
587         psz_status = httpd_ReasonFromCode( i_status );
588         answer->i_body = sizeof("HTTP/1.0 xxx \r\n")
589                         + strlen(psz_status) + i_headers - 1;
590         psz_new = (char *)malloc( answer->i_body + 1);
591         sprintf( psz_new, "HTTP/1.0 %03d %s\r\n", i_status, psz_status );
592         memcpy( &psz_new[strlen(psz_new)], psz_headers, i_headers );
593         free( answer->p_body );
594         answer->p_body = (uint8_t *)psz_new;
595     }
596
597     return VLC_SUCCESS;
598 }
599
600 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
601                                    const char *psz_user,
602                                    const char *psz_password,
603                                    const vlc_acl_t *p_acl,
604                                    httpd_handler_callback_t pf_fill,
605                                    httpd_handler_sys_t *p_sys )
606 {
607     httpd_handler_t *handler = malloc( sizeof( httpd_handler_t ) );
608
609     if( ( handler->url = httpd_UrlNewUnique( host, psz_url, psz_user,
610                                              psz_password, p_acl )
611         ) == NULL )
612     {
613         free( handler );
614         return NULL;
615     }
616
617     handler->pf_fill = pf_fill;
618     handler->p_sys   = p_sys;
619
620     httpd_UrlCatch( handler->url, HTTPD_MSG_HEAD, httpd_HandlerCallBack,
621                     (httpd_callback_sys_t*)handler );
622     httpd_UrlCatch( handler->url, HTTPD_MSG_GET,  httpd_HandlerCallBack,
623                     (httpd_callback_sys_t*)handler );
624     httpd_UrlCatch( handler->url, HTTPD_MSG_POST, httpd_HandlerCallBack,
625                     (httpd_callback_sys_t*)handler );
626
627     return handler;
628 }
629
630 httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
631 {
632     httpd_handler_sys_t *p_sys = handler->p_sys;
633     httpd_UrlDelete( handler->url );
634     free( handler );
635     return p_sys;
636 }
637
638 /*****************************************************************************
639  * High Level Functions: httpd_redirect_t
640  *****************************************************************************/
641 struct httpd_redirect_t
642 {
643     httpd_url_t *url;
644     char        *psz_dst;
645 };
646
647 static int httpd_RedirectCallBack( httpd_callback_sys_t *p_sys,
648                                    httpd_client_t *cl, httpd_message_t *answer,
649                                    const httpd_message_t *query )
650 {
651     httpd_redirect_t *rdir = (httpd_redirect_t*)p_sys;
652     char *p_body;
653     (void)cl;
654
655     if( answer == NULL || query == NULL )
656     {
657         return VLC_SUCCESS;
658     }
659     answer->i_proto  = HTTPD_PROTO_HTTP;
660     answer->i_version= 1;
661     answer->i_type   = HTTPD_MSG_ANSWER;
662     answer->i_status = 301;
663
664     answer->i_body = httpd_HtmlError (&p_body, 301, rdir->psz_dst);
665     answer->p_body = (unsigned char *)p_body;
666
667     /* XXX check if it's ok or we need to set an absolute url */
668     httpd_MsgAdd( answer, "Location",  "%s", rdir->psz_dst );
669
670     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
671
672     return VLC_SUCCESS;
673 }
674
675 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
676                                      const char *psz_url_src )
677 {
678     httpd_redirect_t *rdir = malloc( sizeof( httpd_redirect_t ) );
679
680     if( !( rdir->url = httpd_UrlNewUnique( host, psz_url_src, NULL, NULL, NULL ) ) )
681     {
682         free( rdir );
683         return NULL;
684     }
685     rdir->psz_dst = strdup( psz_url_dst );
686
687     /* Redirect apply for all HTTP request and RTSP DESCRIBE resquest */
688     httpd_UrlCatch( rdir->url, HTTPD_MSG_HEAD, httpd_RedirectCallBack,
689                     (httpd_callback_sys_t*)rdir );
690     httpd_UrlCatch( rdir->url, HTTPD_MSG_GET, httpd_RedirectCallBack,
691                     (httpd_callback_sys_t*)rdir );
692     httpd_UrlCatch( rdir->url, HTTPD_MSG_POST, httpd_RedirectCallBack,
693                     (httpd_callback_sys_t*)rdir );
694     httpd_UrlCatch( rdir->url, HTTPD_MSG_DESCRIBE, httpd_RedirectCallBack,
695                     (httpd_callback_sys_t*)rdir );
696
697     return rdir;
698 }
699 void httpd_RedirectDelete( httpd_redirect_t *rdir )
700 {
701     httpd_UrlDelete( rdir->url );
702     free( rdir->psz_dst );
703     free( rdir );
704 }
705
706 /*****************************************************************************
707  * High Level Funtions: httpd_stream_t
708  *****************************************************************************/
709 struct httpd_stream_t
710 {
711     vlc_mutex_t lock;
712     httpd_url_t *url;
713
714     char    *psz_mime;
715
716     /* Header to send as first packet */
717     uint8_t *p_header;
718     int     i_header;
719
720     /* circular buffer */
721     int         i_buffer_size;      /* buffer size, can't be reallocated smaller */
722     uint8_t     *p_buffer;          /* buffer */
723     int64_t     i_buffer_pos;       /* absolute position from begining */
724     int64_t     i_buffer_last_pos;  /* a new connection will start with that */
725 };
726
727 static int httpd_StreamCallBack( httpd_callback_sys_t *p_sys,
728                                  httpd_client_t *cl, httpd_message_t *answer,
729                                  const httpd_message_t *query )
730 {
731     httpd_stream_t *stream = (httpd_stream_t*)p_sys;
732
733     if( answer == NULL || query == NULL || cl == NULL )
734     {
735         return VLC_SUCCESS;
736     }
737
738     if( answer->i_body_offset > 0 )
739     {
740         int64_t i_write;
741         int     i_pos;
742
743 #if 0
744         fprintf( stderr, "httpd_StreamCallBack i_body_offset=%lld\n",
745                  answer->i_body_offset );
746 #endif
747
748         if( answer->i_body_offset >= stream->i_buffer_pos )
749         {
750             /* fprintf( stderr, "httpd_StreamCallBack: no data\n" ); */
751             return VLC_EGENERIC;    /* wait, no data available */
752         }
753         if( answer->i_body_offset + stream->i_buffer_size <
754             stream->i_buffer_pos )
755         {
756             /* this client isn't fast enough */
757 #if 0
758             fprintf( stderr, "fixing i_body_offset (old=%lld new=%lld)\n",
759                      answer->i_body_offset, stream->i_buffer_last_pos );
760 #endif
761             answer->i_body_offset = stream->i_buffer_last_pos;
762         }
763
764         i_pos   = answer->i_body_offset % stream->i_buffer_size;
765         i_write = stream->i_buffer_pos - answer->i_body_offset;
766         if( i_write > HTTPD_CL_BUFSIZE )
767         {
768             i_write = HTTPD_CL_BUFSIZE;
769         }
770         else if( i_write <= 0 )
771         {
772             return VLC_EGENERIC;    /* wait, no data available */
773         }
774
775         /* Don't go past the end of the circular buffer */
776         i_write = __MIN( i_write, stream->i_buffer_size - i_pos );
777
778         /* using HTTPD_MSG_ANSWER -> data available */
779         answer->i_proto  = HTTPD_PROTO_HTTP;
780         answer->i_version= 0;
781         answer->i_type   = HTTPD_MSG_ANSWER;
782
783         answer->i_body = i_write;
784         answer->p_body = malloc( i_write );
785         memcpy( answer->p_body, &stream->p_buffer[i_pos], i_write );
786
787         answer->i_body_offset += i_write;
788
789         return VLC_SUCCESS;
790     }
791     else
792     {
793         answer->i_proto  = HTTPD_PROTO_HTTP;
794         answer->i_version= 0;
795         answer->i_type   = HTTPD_MSG_ANSWER;
796
797         answer->i_status = 200;
798
799         if( query->i_type != HTTPD_MSG_HEAD )
800         {
801             httpd_ClientModeStream( cl );
802             vlc_mutex_lock( &stream->lock );
803             /* Send the header */
804             if( stream->i_header > 0 )
805             {
806                 answer->i_body = stream->i_header;
807                 answer->p_body = malloc( stream->i_header );
808                 memcpy( answer->p_body, stream->p_header, stream->i_header );
809             }
810             answer->i_body_offset = stream->i_buffer_last_pos;
811             vlc_mutex_unlock( &stream->lock );
812         }
813         else
814         {
815             httpd_MsgAdd( answer, "Content-Length", "%d", 0 );
816             answer->i_body_offset = 0;
817         }
818
819         if( !strcmp( stream->psz_mime, "video/x-ms-asf-stream" ) )
820         {
821             vlc_bool_t b_xplaystream = VLC_FALSE;
822             int i;
823
824             httpd_MsgAdd( answer, "Content-type", "%s",
825                           "application/octet-stream" );
826             httpd_MsgAdd( answer, "Server", "Cougar 4.1.0.3921" );
827             httpd_MsgAdd( answer, "Pragma", "no-cache" );
828             httpd_MsgAdd( answer, "Pragma", "client-id=%d", rand()&0x7fff );
829             httpd_MsgAdd( answer, "Pragma", "features=\"broadcast\"" );
830
831             /* Check if there is a xPlayStrm=1 */
832             for( i = 0; i < query->i_name; i++ )
833             {
834                 if( !strcasecmp( query->name[i],  "Pragma" ) &&
835                     strstr( query->value[i], "xPlayStrm=1" ) )
836                 {
837                     b_xplaystream = VLC_TRUE;
838                 }
839             }
840
841             if( !b_xplaystream )
842             {
843                 answer->i_body_offset = 0;
844             }
845         }
846         else
847         {
848             httpd_MsgAdd( answer, "Content-type",  "%s", stream->psz_mime );
849         }
850         httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
851         return VLC_SUCCESS;
852     }
853 }
854
855 httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
856                                  const char *psz_url, const char *psz_mime,
857                                  const char *psz_user, const char *psz_password,
858                                  const vlc_acl_t *p_acl )
859 {
860     httpd_stream_t *stream = malloc( sizeof( httpd_stream_t ) );
861
862     if( ( stream->url = httpd_UrlNewUnique( host, psz_url, psz_user,
863                                             psz_password, p_acl )
864         ) == NULL )
865     {
866         free( stream );
867         return NULL;
868     }
869     vlc_mutex_init( host, &stream->lock );
870     if( psz_mime && *psz_mime )
871     {
872         stream->psz_mime = strdup( psz_mime );
873     }
874     else
875     {
876         stream->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
877     }
878     stream->i_header = 0;
879     stream->p_header = NULL;
880     stream->i_buffer_size = 5000000;    /* 5 Mo per stream */
881     stream->p_buffer = malloc( stream->i_buffer_size );
882     /* We set to 1 to make life simpler
883      * (this way i_body_offset can never be 0) */
884     stream->i_buffer_pos = 1;
885     stream->i_buffer_last_pos = 1;
886
887     httpd_UrlCatch( stream->url, HTTPD_MSG_HEAD, httpd_StreamCallBack,
888                     (httpd_callback_sys_t*)stream );
889     httpd_UrlCatch( stream->url, HTTPD_MSG_GET, httpd_StreamCallBack,
890                     (httpd_callback_sys_t*)stream );
891     httpd_UrlCatch( stream->url, HTTPD_MSG_POST, httpd_StreamCallBack,
892                     (httpd_callback_sys_t*)stream );
893
894     return stream;
895 }
896
897 int httpd_StreamHeader( httpd_stream_t *stream, uint8_t *p_data, int i_data )
898 {
899     vlc_mutex_lock( &stream->lock );
900     free( stream->p_header );
901     stream->p_header = NULL;
902
903     stream->i_header = i_data;
904     if( i_data > 0 )
905     {
906         stream->p_header = malloc( i_data );
907         memcpy( stream->p_header, p_data, i_data );
908     }
909     vlc_mutex_unlock( &stream->lock );
910
911     return VLC_SUCCESS;
912 }
913
914 int httpd_StreamSend( httpd_stream_t *stream, uint8_t *p_data, int i_data )
915 {
916     int i_count;
917     int i_pos;
918
919     if( i_data < 0 || p_data == NULL )
920     {
921         return VLC_SUCCESS;
922     }
923     vlc_mutex_lock( &stream->lock );
924
925     /* save this pointer (to be used by new connection) */
926     stream->i_buffer_last_pos = stream->i_buffer_pos;
927
928     i_pos = stream->i_buffer_pos % stream->i_buffer_size;
929     i_count = i_data;
930     while( i_count > 0)
931     {
932         int i_copy;
933
934         i_copy = __MIN( i_count, stream->i_buffer_size - i_pos );
935
936         /* Ok, we can't go past the end of our buffer */
937         memcpy( &stream->p_buffer[i_pos], p_data, i_copy );
938
939         i_pos = ( i_pos + i_copy ) % stream->i_buffer_size;
940         i_count -= i_copy;
941         p_data  += i_copy;
942     }
943
944     stream->i_buffer_pos += i_data;
945
946     vlc_mutex_unlock( &stream->lock );
947     return VLC_SUCCESS;
948 }
949
950 void httpd_StreamDelete( httpd_stream_t *stream )
951 {
952     httpd_UrlDelete( stream->url );
953     vlc_mutex_destroy( &stream->lock );
954     free( stream->psz_mime );
955     free( stream->p_header );
956     free( stream->p_buffer );
957     free( stream );
958 }
959
960 /*****************************************************************************
961  * Low level
962  *****************************************************************************/
963 static void httpd_HostThread( httpd_host_t * );
964
965 /* create a new host */
966 httpd_host_t *httpd_HostNew( vlc_object_t *p_this, const char *psz_host,
967                              int i_port )
968 {
969     return httpd_TLSHostNew( p_this, psz_host, i_port, NULL, NULL, NULL, NULL
970                            );
971 }
972
973 static const char psz_object_type[] = "http server";
974
975 httpd_host_t *httpd_TLSHostNew( vlc_object_t *p_this, const char *psz_hostname,
976                                 int i_port,
977                                 const char *psz_cert, const char *psz_key,
978                                 const char *psz_ca, const char *psz_crl )
979 {
980     httpd_t      *httpd;
981     httpd_host_t *host;
982     tls_server_t *p_tls;
983     char *psz_host;
984     vlc_value_t  lockval;
985     int i;
986
987     if( psz_hostname == NULL )
988         psz_hostname = "";
989
990     psz_host = strdup( psz_hostname );
991     if( psz_host == NULL )
992     {
993         msg_Err( p_this, "memory error" );
994         return NULL;
995     }
996
997     /* to be sure to avoid multiple creation */
998     var_Create( p_this->p_libvlc, "httpd_mutex", VLC_VAR_MUTEX );
999     var_Get( p_this->p_libvlc, "httpd_mutex", &lockval );
1000     vlc_mutex_lock( lockval.p_address );
1001
1002     if( !(httpd = vlc_object_find( p_this, VLC_OBJECT_HTTPD, FIND_ANYWHERE )) )
1003     {
1004         msg_Info( p_this, "creating httpd" );
1005         httpd = (httpd_t *)vlc_custom_create( p_this, sizeof (*httpd),
1006                                               VLC_OBJECT_HTTPD,
1007                                               psz_object_type );
1008         if( httpd == NULL )
1009         {
1010             vlc_mutex_unlock( lockval.p_address );
1011             free( psz_host );
1012             return NULL;
1013         }
1014
1015         httpd->i_host = 0;
1016         httpd->host   = NULL;
1017
1018         vlc_object_yield( httpd );
1019         vlc_object_attach( httpd, p_this->p_libvlc );
1020     }
1021
1022     /* verify if it already exist */
1023     for( i = httpd->i_host - 1; i >= 0; i-- )
1024     {
1025         host = httpd->host[i];
1026
1027         /* cannot mix TLS and non-TLS hosts */
1028         if( ( ( httpd->host[i]->p_tls != NULL ) != ( psz_cert != NULL ) )
1029          || ( host->i_port != i_port )
1030          || strcmp( host->psz_hostname, psz_hostname ) )
1031             continue;
1032
1033         /* yep found */
1034         host->i_ref++;
1035
1036         vlc_mutex_unlock( lockval.p_address );
1037         return host;
1038     }
1039
1040     host = NULL;
1041
1042     /* determine TLS configuration */
1043     if ( psz_cert != NULL )
1044     {
1045         p_tls = tls_ServerCreate( p_this, psz_cert, psz_key );
1046         if ( p_tls == NULL )
1047         {
1048             msg_Err( p_this, "TLS initialization error" );
1049             goto error;
1050         }
1051
1052         if ( ( psz_ca != NULL) && tls_ServerAddCA( p_tls, psz_ca ) )
1053         {
1054             msg_Err( p_this, "TLS CA error" );
1055             goto error;
1056         }
1057
1058         if ( ( psz_crl != NULL) && tls_ServerAddCRL( p_tls, psz_crl ) )
1059         {
1060             msg_Err( p_this, "TLS CRL error" );
1061             goto error;
1062         }
1063     }
1064     else
1065         p_tls = NULL;
1066
1067     /* create the new host */
1068     host = (httpd_host_t *)vlc_custom_create( p_this, sizeof (*host),
1069                                               VLC_OBJECT_HTTPD_HOST,
1070                                               psz_object_type );
1071     if (host == NULL)
1072         goto error;
1073
1074     vlc_object_lock( host );
1075     if( vlc_object_waitpipe( VLC_OBJECT( host ) ) == -1 )
1076     {
1077         msg_Err( host, "signaling pipe error: %m" );
1078         vlc_object_unlock( host );
1079         goto error;
1080     }
1081     vlc_object_unlock( host );
1082
1083     host->httpd = httpd;
1084     vlc_mutex_init( httpd, &host->lock );
1085     host->i_ref = 1;
1086
1087     host->fds = net_ListenTCP( p_this, psz_host, i_port );
1088     if( host->fds == NULL )
1089     {
1090         msg_Err( p_this, "cannot create socket(s) for HTTP host" );
1091         goto error;
1092     }
1093     for (host->nfd = 0; host->fds[host->nfd] != -1; host->nfd++);
1094
1095     host->i_port = i_port;
1096     host->psz_hostname = psz_host;
1097
1098     host->i_url     = 0;
1099     host->url       = NULL;
1100     host->i_client  = 0;
1101     host->client    = NULL;
1102
1103     host->p_tls = p_tls;
1104
1105     /* create the thread */
1106     if( vlc_thread_create( host, "httpd host thread", httpd_HostThread,
1107                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
1108     {
1109         msg_Err( p_this, "cannot spawn http host thread" );
1110         goto error;
1111     }
1112
1113     /* now add it to httpd */
1114     TAB_APPEND( httpd->i_host, httpd->host, host );
1115     vlc_mutex_unlock( lockval.p_address );
1116
1117     return host;
1118
1119 error:
1120     free( psz_host );
1121     if( httpd->i_host <= 0 )
1122     {
1123         vlc_object_release( httpd );
1124         vlc_object_detach( httpd );
1125         vlc_object_release( httpd );
1126     }
1127     vlc_mutex_unlock( lockval.p_address );
1128
1129     if( host != NULL )
1130     {
1131         net_ListenClose( host->fds );
1132         vlc_mutex_destroy( &host->lock );
1133         vlc_object_release( host );
1134     }
1135
1136     if( p_tls != NULL )
1137         tls_ServerDelete( p_tls );
1138
1139     return NULL;
1140 }
1141
1142 /* delete a host */
1143 void httpd_HostDelete( httpd_host_t *host )
1144 {
1145     httpd_t *httpd = host->httpd;
1146     vlc_value_t lockval;
1147     int i;
1148
1149     var_Get( httpd->p_libvlc, "httpd_mutex", &lockval );
1150     vlc_mutex_lock( lockval.p_address );
1151
1152     host->i_ref--;
1153     if( host->i_ref > 0 )
1154     {
1155         /* still used */
1156         vlc_mutex_unlock( lockval.p_address );
1157         msg_Dbg( host, "httpd_HostDelete: host still used" );
1158         return;
1159     }
1160     TAB_REMOVE( httpd->i_host, httpd->host, host );
1161
1162     vlc_object_kill( host );
1163     vlc_thread_join( host );
1164
1165     msg_Dbg( host, "HTTP host removed" );
1166
1167     for( i = 0; i < host->i_url; i++ )
1168     {
1169         msg_Err( host, "url still registered: %s", host->url[i]->psz_url );
1170     }
1171     for( i = 0; i < host->i_client; i++ )
1172     {
1173         httpd_client_t *cl = host->client[i];
1174         msg_Warn( host, "client still connected" );
1175         httpd_ClientClean( cl );
1176         TAB_REMOVE( host->i_client, host->client, cl );
1177         free( cl );
1178         i--;
1179         /* TODO */
1180     }
1181
1182     if( host->p_tls != NULL)
1183         tls_ServerDelete( host->p_tls );
1184
1185     net_ListenClose( host->fds );
1186     free( host->psz_hostname );
1187
1188     vlc_mutex_destroy( &host->lock );
1189     vlc_object_release( host );
1190
1191     vlc_object_release( httpd );
1192     if( httpd->i_host <= 0 )
1193     {
1194         msg_Dbg( httpd, "no host left, stopping httpd" );
1195         vlc_object_detach( httpd );
1196         vlc_object_release( httpd );
1197     }
1198     vlc_mutex_unlock( lockval.p_address );
1199 }
1200
1201 /* register a new url */
1202 static httpd_url_t *httpd_UrlNewPrivate( httpd_host_t *host, const char *psz_url,
1203                                          const char *psz_user, const char *psz_password,
1204                                          const vlc_acl_t *p_acl, vlc_bool_t b_check )
1205 {
1206     httpd_url_t *url;
1207     int         i;
1208
1209     assert( psz_url != NULL );
1210
1211     vlc_mutex_lock( &host->lock );
1212     if( b_check )
1213     {
1214         for( i = 0; i < host->i_url; i++ )
1215         {
1216             if( !strcmp( psz_url, host->url[i]->psz_url ) )
1217             {
1218                 msg_Warn( host->httpd,
1219                           "cannot add '%s' (url already defined)", psz_url );
1220                 vlc_mutex_unlock( &host->lock );
1221                 return NULL;
1222             }
1223         }
1224     }
1225
1226     url = malloc( sizeof( httpd_url_t ) );
1227     url->host = host;
1228
1229     vlc_mutex_init( host->httpd, &url->lock );
1230     url->psz_url = strdup( psz_url );
1231     url->psz_user = strdup( psz_user ? psz_user : "" );
1232     url->psz_password = strdup( psz_password ? psz_password : "" );
1233     url->p_acl = ACL_Duplicate( host, p_acl );
1234     for( i = 0; i < HTTPD_MSG_MAX; i++ )
1235     {
1236         url->catch[i].cb = NULL;
1237         url->catch[i].p_sys = NULL;
1238     }
1239
1240     TAB_APPEND( host->i_url, host->url, url );
1241     vlc_mutex_unlock( &host->lock );
1242
1243     return url;
1244 }
1245
1246 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
1247                            const char *psz_user, const char *psz_password,
1248                            const vlc_acl_t *p_acl )
1249 {
1250     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1251                                 psz_password, p_acl, VLC_FALSE );
1252 }
1253
1254 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
1255                                  const char *psz_user, const char *psz_password,
1256                                  const vlc_acl_t *p_acl )
1257 {
1258     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1259                                 psz_password, p_acl, VLC_TRUE );
1260 }
1261
1262 /* register callback on a url */
1263 int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
1264                     httpd_callback_sys_t *p_sys )
1265 {
1266     vlc_mutex_lock( &url->lock );
1267     url->catch[i_msg].cb   = cb;
1268     url->catch[i_msg].p_sys= p_sys;
1269     vlc_mutex_unlock( &url->lock );
1270
1271     return VLC_SUCCESS;
1272 }
1273
1274 /* delete an url */
1275 void httpd_UrlDelete( httpd_url_t *url )
1276 {
1277     httpd_host_t *host = url->host;
1278     int          i;
1279
1280     vlc_mutex_lock( &host->lock );
1281     TAB_REMOVE( host->i_url, host->url, url );
1282
1283     vlc_mutex_destroy( &url->lock );
1284     free( url->psz_url );
1285     free( url->psz_user );
1286     free( url->psz_password );
1287     ACL_Destroy( url->p_acl );
1288
1289     for( i = 0; i < host->i_client; i++ )
1290     {
1291         httpd_client_t *client = host->client[i];
1292
1293         if( client->url == url )
1294         {
1295             /* TODO complete it */
1296             msg_Warn( host, "force closing connections" );
1297             httpd_ClientClean( client );
1298             TAB_REMOVE( host->i_client, host->client, client );
1299             free( client );
1300             i--;
1301         }
1302     }
1303     free( url );
1304     vlc_mutex_unlock( &host->lock );
1305 }
1306
1307 void httpd_MsgInit( httpd_message_t *msg )
1308 {
1309     msg->cl         = NULL;
1310     msg->i_type     = HTTPD_MSG_NONE;
1311     msg->i_proto    = HTTPD_PROTO_NONE;
1312     msg->i_version  = -1; /* FIXME */
1313
1314     msg->i_status   = 0;
1315
1316     msg->psz_url    = NULL;
1317     msg->psz_args   = NULL;
1318
1319     msg->i_channel  = -1;
1320
1321     msg->i_name     = 0;
1322     msg->name       = NULL;
1323     msg->i_value    = 0;
1324     msg->value      = NULL;
1325
1326     msg->i_body_offset = 0;
1327     msg->i_body        = 0;
1328     msg->p_body        = NULL;
1329 }
1330
1331 void httpd_MsgClean( httpd_message_t *msg )
1332 {
1333     int i;
1334
1335     free( msg->psz_url );
1336     free( msg->psz_args );
1337     for( i = 0; i < msg->i_name; i++ )
1338     {
1339         free( msg->name[i] );
1340         free( msg->value[i] );
1341     }
1342     free( msg->name );
1343     free( msg->value );
1344     free( msg->p_body );
1345     httpd_MsgInit( msg );
1346 }
1347
1348 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
1349 {
1350     int i;
1351
1352     for( i = 0; i < msg->i_name; i++ )
1353     {
1354         if( !strcasecmp( msg->name[i], name ))
1355         {
1356             return msg->value[i];
1357         }
1358     }
1359     return NULL;
1360 }
1361
1362 void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
1363 {
1364     va_list args;
1365     char *value = NULL;
1366
1367     va_start( args, psz_value );
1368     if( vasprintf( &value, psz_value, args ) == -1 )
1369         value = NULL;
1370     va_end( args );
1371
1372     if( value == NULL )
1373         return;
1374
1375     name = strdup( name );
1376     if( name == NULL )
1377     {
1378         free( value );
1379         return;
1380     }
1381
1382     TAB_APPEND( msg->i_name,  msg->name,  (char*)name );
1383     TAB_APPEND( msg->i_value, msg->value, value );
1384 }
1385
1386 static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
1387 {
1388     cl->i_state = HTTPD_CLIENT_RECEIVING;
1389     cl->i_activity_date = now;
1390     cl->i_activity_timeout = I64C(10000000);
1391     cl->i_buffer_size = HTTPD_CL_BUFSIZE;
1392     cl->i_buffer = 0;
1393     cl->p_buffer = malloc( cl->i_buffer_size );
1394     cl->i_mode   = HTTPD_CLIENT_FILE;
1395     cl->b_read_waiting = VLC_FALSE;
1396
1397     httpd_MsgInit( &cl->query );
1398     httpd_MsgInit( &cl->answer );
1399 }
1400
1401 void httpd_ClientModeStream( httpd_client_t *cl )
1402 {
1403     cl->i_mode   = HTTPD_CLIENT_STREAM;
1404 }
1405
1406 void httpd_ClientModeBidir( httpd_client_t *cl )
1407 {
1408     cl->i_mode   = HTTPD_CLIENT_BIDIR;
1409 }
1410
1411 char* httpd_ClientIP( const httpd_client_t *cl, char *psz_ip )
1412 {
1413     return net_GetPeerAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1414 }
1415
1416 char* httpd_ServerIP( const httpd_client_t *cl, char *psz_ip )
1417 {
1418     return net_GetSockAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1419 }
1420
1421 static void httpd_ClientClean( httpd_client_t *cl )
1422 {
1423     if( cl->fd >= 0 )
1424     {
1425         if( cl->p_tls != NULL )
1426             tls_ServerSessionClose( cl->p_tls );
1427         net_Close( cl->fd );
1428         cl->fd = -1;
1429     }
1430
1431     httpd_MsgClean( &cl->answer );
1432     httpd_MsgClean( &cl->query );
1433
1434     free( cl->p_buffer );
1435     cl->p_buffer = NULL;
1436 }
1437
1438 static httpd_client_t *httpd_ClientNew( int fd, tls_session_t *p_tls, mtime_t now )
1439 {
1440     httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
1441
1442     if( !cl ) return NULL;
1443
1444     cl->i_ref   = 0;
1445     cl->fd      = fd;
1446     cl->url     = NULL;
1447     cl->p_tls = p_tls;
1448
1449     httpd_ClientInit( cl, now );
1450
1451     return cl;
1452 }
1453
1454 static int httpd_NetRecv( httpd_client_t *cl, uint8_t *p, int i_len )
1455 {
1456     tls_session_t *p_tls;
1457
1458     p_tls = cl->p_tls;
1459     if( p_tls != NULL)
1460         return tls_Recv( p_tls, p, i_len );
1461
1462     return recv( cl->fd, p, i_len, 0 );
1463 }
1464
1465 static int httpd_NetSend( httpd_client_t *cl, const uint8_t *p, int i_len )
1466 {
1467     tls_session_t *p_tls;
1468
1469     p_tls = cl->p_tls;
1470     if( p_tls != NULL)
1471         return tls_Send( p_tls, p, i_len );
1472
1473     return send( cl->fd, p, i_len, 0 );
1474 }
1475
1476
1477 static const struct
1478 {
1479     const char name[16];
1480     int  i_type;
1481     int  i_proto;
1482 }
1483 msg_type[] =
1484 {
1485     { "OPTIONS",       HTTPD_MSG_OPTIONS,      HTTPD_PROTO_RTSP },
1486     { "DESCRIBE",      HTTPD_MSG_DESCRIBE,     HTTPD_PROTO_RTSP },
1487     { "SETUP",         HTTPD_MSG_SETUP,        HTTPD_PROTO_RTSP },
1488     { "PLAY",          HTTPD_MSG_PLAY,         HTTPD_PROTO_RTSP },
1489     { "PAUSE",         HTTPD_MSG_PAUSE,        HTTPD_PROTO_RTSP },
1490     { "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
1491     { "TEARDOWN",      HTTPD_MSG_TEARDOWN,     HTTPD_PROTO_RTSP },
1492     { "GET",           HTTPD_MSG_GET,          HTTPD_PROTO_HTTP },
1493     { "HEAD",          HTTPD_MSG_HEAD,         HTTPD_PROTO_HTTP },
1494     { "POST",          HTTPD_MSG_POST,         HTTPD_PROTO_HTTP },
1495     { "",              HTTPD_MSG_NONE,         HTTPD_PROTO_NONE }
1496 };
1497
1498
1499 static void httpd_ClientRecv( httpd_client_t *cl )
1500 {
1501     int i_len;
1502
1503     /* ignore leading whites */
1504     if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
1505         ( cl->i_buffer == 0 ) )
1506     {
1507         unsigned char c;
1508
1509         i_len = httpd_NetRecv( cl, &c, 1 );
1510
1511         if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
1512         {
1513             cl->p_buffer[0] = c;
1514             cl->i_buffer++;
1515         }
1516     }
1517     else
1518     if( cl->query.i_proto == HTTPD_PROTO_NONE )
1519     {
1520         /* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
1521         i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
1522                                7 - cl->i_buffer );
1523         if( i_len > 0 )
1524         {
1525             cl->i_buffer += i_len;
1526         }
1527
1528         if( ( cl->i_buffer >= 4 ) && ( cl->p_buffer[0] == '$' ) )
1529         {
1530             /* Interleaved RTP over RTSP */
1531             cl->query.i_proto = HTTPD_PROTO_RTSP;
1532             cl->query.i_type  = HTTPD_MSG_CHANNEL;
1533             cl->query.i_channel = cl->p_buffer[1];
1534             cl->query.i_body  = (cl->p_buffer[2] << 8)|cl->p_buffer[3];
1535             cl->query.p_body  = malloc( cl->query.i_body );
1536             cl->i_buffer      -= 4;
1537             memcpy( cl->query.p_body, cl->p_buffer + 4, cl->i_buffer );
1538         }
1539         else
1540         /* The smallest legal request is 7 bytes ("GET /\r\n"),
1541          * this is the maximum we can ask at this point. */
1542         if( cl->i_buffer >= 7 )
1543         {
1544             if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
1545             {
1546                 cl->query.i_proto = HTTPD_PROTO_HTTP;
1547                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1548             }
1549             else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
1550             {
1551                 cl->query.i_proto = HTTPD_PROTO_RTSP;
1552                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1553             }
1554             else
1555             {
1556                 /* We need the full request line to determine the protocol. */
1557                 cl->query.i_proto = HTTPD_PROTO_HTTP0;
1558                 cl->query.i_type  = HTTPD_MSG_NONE;
1559             }
1560         }
1561     }
1562     else if( cl->query.i_body > 0 )
1563     {
1564         /* we are reading the body of a request or a channel */
1565         i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
1566                                cl->query.i_body - cl->i_buffer );
1567         if( i_len > 0 )
1568         {
1569             cl->i_buffer += i_len;
1570         }
1571         if( cl->i_buffer >= cl->query.i_body )
1572         {
1573             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1574         }
1575     }
1576     else
1577     {
1578         /* we are reading a header -> char by char */
1579         for( ;; )
1580         {
1581             if( cl->i_buffer == cl->i_buffer_size )
1582             {
1583                 uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
1584                 if( newbuf == NULL )
1585                 {
1586                     i_len = 0;
1587                     break;
1588                 }
1589
1590                 cl->p_buffer = newbuf;
1591                 cl->i_buffer_size += 1024;
1592             }
1593
1594             i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
1595             if( i_len <= 0 )
1596             {
1597                 break;
1598             }
1599             cl->i_buffer++;
1600
1601             if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
1602              && ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
1603             {
1604                 /* Request line is now complete */
1605                 const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
1606                 size_t len;
1607
1608                 assert( cl->query.i_type == HTTPD_MSG_NONE );
1609
1610                 if( p == NULL ) /* no URI: evil guy */
1611                 {
1612                     i_len = 0; /* drop connection */
1613                     break;
1614                 }
1615
1616                 do
1617                     p++; /* skips extra spaces */
1618                 while( *p == ' ' );
1619
1620                 p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
1621                 if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
1622                 {
1623                     i_len = 0; /* not supported currently -> drop */
1624                     break;
1625                 }
1626
1627                 do
1628                     p++; /* skips extra spaces ever again */
1629                 while( *p == ' ' );
1630
1631                 len = ((char *)cl->p_buffer) + cl->i_buffer - p;
1632                 if( len < 7 ) /* foreign protocol */
1633                     i_len = 0; /* I don't understand -> drop */
1634                 else
1635                 if( memcmp( p, "HTTP/1.", 7 ) == 0 )
1636                 {
1637                     cl->query.i_proto = HTTPD_PROTO_HTTP;
1638                     cl->query.i_version = atoi( p + 7 );
1639                 }
1640                 else
1641                 if( memcmp( p, "RTSP/1.", 7 ) == 0 )
1642                 {
1643                     cl->query.i_proto = HTTPD_PROTO_RTSP;
1644                     cl->query.i_version = atoi( p + 7 );
1645                 }
1646                 else
1647                 if( memcmp( p, "HTTP/", 5 ) == 0 )
1648                 {
1649                     const uint8_t sorry[] =
1650                        "HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
1651                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1652                     i_len = 0; /* drop */
1653                 }
1654                 else
1655                 if( memcmp( p, "RTSP/", 5 ) == 0 )
1656                 {
1657                     const uint8_t sorry[] =
1658                         "RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
1659                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1660                     i_len = 0; /* drop */
1661                 }
1662                 else /* yet another foreign protocol */
1663                     i_len = 0;
1664
1665                 if( i_len == 0 )
1666                     break;
1667             }
1668
1669             if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
1670                 ( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
1671             {
1672                 char *p;
1673
1674                 /* we have finished the header so parse it and set i_body */
1675                 cl->p_buffer[cl->i_buffer] = '\0';
1676
1677                 if( cl->query.i_type == HTTPD_MSG_ANSWER )
1678                 {
1679                     /* FIXME:
1680                      * assume strlen( "HTTP/1.x" ) = 8
1681                      */
1682                     cl->query.i_status =
1683                         strtol( (char *)&cl->p_buffer[8],
1684                                 &p, 0 );
1685                     while( *p == ' ' )
1686                         p++;
1687                 }
1688                 else
1689                 {
1690                     unsigned i;
1691
1692                     p = NULL;
1693                     cl->query.i_type = HTTPD_MSG_NONE;
1694
1695                     /*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
1696
1697                     for( i = 0; msg_type[i].name[0]; i++ )
1698                     {
1699                         if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
1700                                       strlen( msg_type[i].name ) ) )
1701                         {
1702                             p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
1703                             cl->query.i_type = msg_type[i].i_type;
1704                             if( cl->query.i_proto != msg_type[i].i_proto )
1705                             {
1706                                 p = NULL;
1707                                 cl->query.i_proto = HTTPD_PROTO_NONE;
1708                                 cl->query.i_type = HTTPD_MSG_NONE;
1709                             }
1710                             break;
1711                         }
1712                     }
1713                     if( p == NULL )
1714                     {
1715                         if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
1716                         {
1717                             cl->query.i_proto = HTTPD_PROTO_HTTP;
1718                         }
1719                         else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
1720                         {
1721                             cl->query.i_proto = HTTPD_PROTO_RTSP;
1722                         }
1723                     }
1724                     else
1725                     {
1726                         char *p2;
1727                         char *p3;
1728
1729                         while( *p == ' ' )
1730                         {
1731                             p++;
1732                         }
1733                         p2 = strchr( p, ' ' );
1734                         if( p2 )
1735                         {
1736                             *p2++ = '\0';
1737                         }
1738                         if( !strncasecmp( p, "rtsp:", 5 ) )
1739                         {
1740                             /* for rtsp url, you have rtsp://localhost:port/path */
1741                             p += 5;
1742                             while( *p == '/' ) p++;
1743                             while( *p && *p != '/' ) p++;
1744                         }
1745                         cl->query.psz_url = strdup( p );
1746                         if( ( p3 = strchr( cl->query.psz_url, '?' ) )  )
1747                         {
1748                             *p3++ = '\0';
1749                             cl->query.psz_args = (uint8_t *)strdup( p3 );
1750                         }
1751                         p = p2;
1752                     }
1753                 }
1754                 if( p )
1755                 {
1756                     p = strchr( p, '\n' );
1757                 }
1758                 if( p )
1759                 {
1760                     while( *p == '\n' || *p == '\r' )
1761                     {
1762                         p++;
1763                     }
1764                     while( p && *p != '\0' )
1765                     {
1766                         char *line = p;
1767                         char *eol = p = strchr( p, '\n' );
1768                         char *colon;
1769
1770                         while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
1771                         {
1772                             *eol-- = '\0';
1773                         }
1774
1775                         if( ( colon = strchr( line, ':' ) ) )
1776                         {
1777                             char *name;
1778                             char *value;
1779
1780                             *colon++ = '\0';
1781                             while( *colon == ' ' )
1782                             {
1783                                 colon++;
1784                             }
1785                             name = strdup( line );
1786                             value = strdup( colon );
1787
1788                             TAB_APPEND( cl->query.i_name, cl->query.name, name );
1789                             TAB_APPEND( cl->query.i_value,cl->query.value,value);
1790
1791                             if( !strcasecmp( name, "Content-Length" ) )
1792                             {
1793                                 cl->query.i_body = atol( value );
1794                             }
1795                         }
1796
1797                         if( p )
1798                         {
1799                             p++;
1800                             while( *p == '\n' || *p == '\r' )
1801                             {
1802                                 p++;
1803                             }
1804                         }
1805                     }
1806                 }
1807                 if( cl->query.i_body > 0 )
1808                 {
1809                     /* TODO Mhh, handle the case client will only send a
1810                      * request and close the connection
1811                      * to mark and of body (probably only RTSP) */
1812                     cl->query.p_body = malloc( cl->query.i_body );
1813                     cl->i_buffer = 0;
1814                 }
1815                 else
1816                 {
1817                     cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1818                 }
1819             }
1820         }
1821     }
1822
1823     /* check if the client is to be set to dead */
1824 #if defined( WIN32 ) || defined( UNDER_CE )
1825     if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1826 #else
1827     if( ( i_len < 0 && errno != EAGAIN && errno != EINTR ) || ( i_len == 0 ) )
1828 #endif
1829     {
1830         if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
1831         {
1832             /* connection closed -> end of data */
1833             if( cl->query.i_body > 0 )
1834             {
1835                 cl->query.i_body = cl->i_buffer;
1836             }
1837             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1838         }
1839         else
1840         {
1841             cl->i_state = HTTPD_CLIENT_DEAD;
1842         }
1843     }
1844
1845     /* XXX: for QT I have to disable timeout. Try to find why */
1846     if( cl->query.i_proto == HTTPD_PROTO_RTSP )
1847         cl->i_activity_timeout = 0;
1848
1849 #if 0 /* Debugging only */
1850     if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
1851     {
1852         int i;
1853
1854         fprintf( stderr, "received new request\n" );
1855         fprintf( stderr, "  - proto=%s\n",
1856                  cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
1857         fprintf( stderr, "  - version=%d\n", cl->query.i_version );
1858         fprintf( stderr, "  - msg=%d\n", cl->query.i_type );
1859         if( cl->query.i_type == HTTPD_MSG_ANSWER )
1860         {
1861             fprintf( stderr, "  - answer=%d '%s'\n", cl->query.i_status,
1862                      cl->query.psz_status );
1863         }
1864         else if( cl->query.i_type != HTTPD_MSG_NONE )
1865         {
1866             fprintf( stderr, "  - url=%s\n", cl->query.psz_url );
1867         }
1868         for( i = 0; i < cl->query.i_name; i++ )
1869         {
1870             fprintf( stderr, "  - option name='%s' value='%s'\n",
1871                      cl->query.name[i], cl->query.value[i] );
1872         }
1873     }
1874 #endif
1875 }
1876
1877 static void httpd_ClientSend( httpd_client_t *cl )
1878 {
1879     int i;
1880     int i_len;
1881
1882     if( cl->i_buffer < 0 )
1883     {
1884         /* We need to create the header */
1885         int i_size = 0;
1886         char *p;
1887         const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
1888
1889         i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
1890         for( i = 0; i < cl->answer.i_name; i++ )
1891         {
1892             i_size += strlen( cl->answer.name[i] ) + 2 +
1893                       strlen( cl->answer.value[i] ) + 2;
1894         }
1895
1896         if( cl->i_buffer_size < i_size )
1897         {
1898             cl->i_buffer_size = i_size;
1899             free( cl->p_buffer );
1900             cl->p_buffer = malloc( i_size );
1901         }
1902         p = (char *)cl->p_buffer;
1903
1904         p += sprintf( p, "%s.%u %d %s\r\n",
1905                       cl->answer.i_proto ==  HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
1906                       cl->answer.i_version,
1907                       cl->answer.i_status, psz_status );
1908         for( i = 0; i < cl->answer.i_name; i++ )
1909         {
1910             p += sprintf( p, "%s: %s\r\n", cl->answer.name[i],
1911                           cl->answer.value[i] );
1912         }
1913         p += sprintf( p, "\r\n" );
1914
1915         cl->i_buffer = 0;
1916         cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
1917
1918         /*fprintf( stderr, "sending answer\n" );
1919         fprintf( stderr, "%s",  cl->p_buffer );*/
1920     }
1921
1922     i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
1923                            cl->i_buffer_size - cl->i_buffer );
1924     if( i_len >= 0 )
1925     {
1926         cl->i_buffer += i_len;
1927
1928         if( cl->i_buffer >= cl->i_buffer_size )
1929         {
1930             if( cl->answer.i_body == 0  && cl->answer.i_body_offset > 0 &&
1931                 !cl->b_read_waiting )
1932             {
1933                 /* catch more body data */
1934                 int     i_msg = cl->query.i_type;
1935                 int64_t i_offset = cl->answer.i_body_offset;
1936
1937                 httpd_MsgClean( &cl->answer );
1938                 cl->answer.i_body_offset = i_offset;
1939
1940                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
1941                                           &cl->answer, &cl->query );
1942             }
1943
1944             if( cl->answer.i_body > 0 )
1945             {
1946                 /* send the body data */
1947                 free( cl->p_buffer );
1948                 cl->p_buffer = cl->answer.p_body;
1949                 cl->i_buffer_size = cl->answer.i_body;
1950                 cl->i_buffer = 0;
1951
1952                 cl->answer.i_body = 0;
1953                 cl->answer.p_body = NULL;
1954             }
1955             else
1956             {
1957                 /* send finished */
1958                 cl->i_state = HTTPD_CLIENT_SEND_DONE;
1959             }
1960         }
1961     }
1962     else
1963     {
1964 #if defined( WIN32 ) || defined( UNDER_CE )
1965         if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1966 #else
1967         if( ( i_len < 0 && errno != EAGAIN && errno != EINTR ) || ( i_len == 0 ) )
1968 #endif
1969         {
1970             /* error */
1971             cl->i_state = HTTPD_CLIENT_DEAD;
1972         }
1973     }
1974 }
1975
1976 static void httpd_ClientTlsHsIn( httpd_client_t *cl )
1977 {
1978     switch( tls_SessionContinueHandshake( cl->p_tls ) )
1979     {
1980         case 0:
1981             cl->i_state = HTTPD_CLIENT_RECEIVING;
1982             break;
1983
1984         case -1:
1985             cl->i_state = HTTPD_CLIENT_DEAD;
1986             cl->p_tls = NULL;
1987             break;
1988
1989         case 2:
1990             cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
1991     }
1992 }
1993
1994 static void httpd_ClientTlsHsOut( httpd_client_t *cl )
1995 {
1996     switch( tls_SessionContinueHandshake( cl->p_tls ) )
1997     {
1998         case 0:
1999             cl->i_state = HTTPD_CLIENT_RECEIVING;
2000             break;
2001
2002         case -1:
2003             cl->i_state = HTTPD_CLIENT_DEAD;
2004             cl->p_tls = NULL;
2005             break;
2006
2007         case 1:
2008             cl->i_state = HTTPD_CLIENT_TLS_HS_IN;
2009             break;
2010     }
2011 }
2012
2013 static void httpd_HostThread( httpd_host_t *host )
2014 {
2015     tls_session_t *p_tls = NULL;
2016     counter_t *p_total_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2017     counter_t *p_active_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2018     int evfd;
2019     vlc_bool_t b_die;
2020
2021     vlc_object_lock( host );
2022     evfd = vlc_object_waitpipe( VLC_OBJECT( host ) );
2023     b_die = !vlc_object_alive( host );
2024     vlc_object_unlock( host );
2025
2026     while( !b_die )
2027     {
2028         if( host->i_url <= 0 )
2029         {
2030             /* 0.2s (FIXME: use a condition variable) */
2031             msleep( 200000 );
2032             continue;
2033         }
2034
2035         /* prepare a new TLS session */
2036         if( ( p_tls == NULL ) && ( host->p_tls != NULL ) )
2037             p_tls = tls_ServerSessionPrepare( host->p_tls );
2038
2039         struct pollfd ufd[host->nfd + host->i_client + 1];
2040         unsigned nfd;
2041         for( nfd = 0; nfd < host->nfd; nfd++ )
2042         {
2043             ufd[nfd].fd = host->fds[nfd];
2044             ufd[nfd].events = POLLIN;
2045             ufd[nfd].revents = 0;
2046         }
2047
2048         /* add all socket that should be read/write and close dead connection */
2049         vlc_mutex_lock( &host->lock );
2050         mtime_t now = mdate();
2051         vlc_bool_t b_low_delay = VLC_FALSE;
2052
2053         for(int i_client = 0; i_client < host->i_client; i_client++ )
2054         {
2055             httpd_client_t *cl = host->client[i_client];
2056             if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
2057                 ( cl->i_state == HTTPD_CLIENT_DEAD ||
2058                   ( cl->i_activity_timeout > 0 &&
2059                     cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
2060             {
2061                 httpd_ClientClean( cl );
2062                 stats_UpdateInteger( host, p_active_counter, -1, NULL );
2063                 TAB_REMOVE( host->i_client, host->client, cl );
2064                 free( cl );
2065                 i_client--;
2066                 continue;
2067             }
2068
2069             struct pollfd *pufd = ufd + nfd;
2070             assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
2071
2072             pufd->fd = cl->fd;
2073             pufd->events = pufd->revents = 0;
2074
2075             if( ( cl->i_state == HTTPD_CLIENT_RECEIVING )
2076                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_IN ) )
2077             {
2078                 pufd->events = POLLIN;
2079             }
2080             else if( ( cl->i_state == HTTPD_CLIENT_SENDING )
2081                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT ) )
2082             {
2083                 pufd->events = POLLOUT;
2084             }
2085             else if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
2086             {
2087                 httpd_message_t *answer = &cl->answer;
2088                 httpd_message_t *query  = &cl->query;
2089                 int i_msg = query->i_type;
2090
2091                 httpd_MsgInit( answer );
2092
2093                 /* Handle what we received */
2094                 if( (cl->i_mode != HTTPD_CLIENT_BIDIR) &&
2095                     (i_msg == HTTPD_MSG_ANSWER || i_msg == HTTPD_MSG_CHANNEL) )
2096                 {
2097                     /* we can only receive request from client when not
2098                      * in BIDIR mode */
2099                     cl->url     = NULL;
2100                     cl->i_state = HTTPD_CLIENT_DEAD;
2101                 }
2102                 else if( i_msg == HTTPD_MSG_ANSWER )
2103                 {
2104                     /* We are in BIDIR mode, trigger the callback and then
2105                      * check for new data */
2106                     if( cl->url && cl->url->catch[i_msg].cb )
2107                     {
2108                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2109                                                   cl, NULL, query );
2110                     }
2111                     cl->i_state = HTTPD_CLIENT_WAITING;
2112                 }
2113                 else if( i_msg == HTTPD_MSG_CHANNEL )
2114                 {
2115                     /* We are in BIDIR mode, trigger the callback and then
2116                      * check for new data */
2117                     if( cl->url && cl->url->catch[i_msg].cb )
2118                     {
2119                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2120                                                   cl, NULL, query );
2121                     }
2122                     cl->i_state = HTTPD_CLIENT_WAITING;
2123                 }
2124                 else if( i_msg == HTTPD_MSG_OPTIONS )
2125                 {
2126
2127                     answer->i_type   = HTTPD_MSG_ANSWER;
2128                     answer->i_proto  = query->i_proto;
2129                     answer->i_status = 200;
2130                     answer->i_body = 0;
2131                     answer->p_body = NULL;
2132
2133                     httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
2134                     httpd_MsgAdd( answer, "Content-Length", "0" );
2135
2136                     switch( query->i_proto )
2137                     {
2138                         case HTTPD_PROTO_HTTP:
2139                             answer->i_version = 1;
2140                             httpd_MsgAdd( answer, "Allow",
2141                                           "GET,HEAD,POST,OPTIONS" );
2142                             break;
2143
2144                         case HTTPD_PROTO_RTSP:
2145                         {
2146                             const char *p;
2147                             answer->i_version = 0;
2148
2149                             p = httpd_MsgGet( query, "Cseq" );
2150                             if( p != NULL )
2151                                 httpd_MsgAdd( answer, "Cseq", "%s", p );
2152                             p = httpd_MsgGet( query, "Timestamp" );
2153                             if( p != NULL )
2154                                 httpd_MsgAdd( answer, "Timestamp", "%s", p );
2155
2156                             p = httpd_MsgGet( query, "Require" );
2157                             if( p != NULL )
2158                             {
2159                                 answer->i_status = 551;
2160                                 httpd_MsgAdd( query, "Unsupported", "%s", p );
2161                             }
2162
2163                             httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
2164                                           "TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
2165                             break;
2166                         }
2167                     }
2168
2169                     cl->i_buffer = -1;  /* Force the creation of the answer in
2170                                          * httpd_ClientSend */
2171                     cl->i_state = HTTPD_CLIENT_SENDING;
2172                 }
2173                 else if( i_msg == HTTPD_MSG_NONE )
2174                 {
2175                     if( query->i_proto == HTTPD_PROTO_NONE )
2176                     {
2177                         cl->url = NULL;
2178                         cl->i_state = HTTPD_CLIENT_DEAD;
2179                     }
2180                     else
2181                     {
2182                         char *p;
2183
2184                         /* unimplemented */
2185                         answer->i_proto  = query->i_proto ;
2186                         answer->i_type   = HTTPD_MSG_ANSWER;
2187                         answer->i_version= 0;
2188                         answer->i_status = 501;
2189
2190                         answer->i_body = httpd_HtmlError (&p, 501, NULL);
2191                         answer->p_body = (uint8_t *)p;
2192                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2193
2194                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2195                         cl->i_state = HTTPD_CLIENT_SENDING;
2196                     }
2197                 }
2198                 else
2199                 {
2200                     vlc_bool_t b_auth_failed = VLC_FALSE;
2201                     vlc_bool_t b_hosts_failed = VLC_FALSE;
2202
2203                     /* Search the url and trigger callbacks */
2204                     for(int i = 0; i < host->i_url; i++ )
2205                     {
2206                         httpd_url_t *url = host->url[i];
2207
2208                         if( !strcmp( url->psz_url, query->psz_url ) )
2209                         {
2210                             if( url->catch[i_msg].cb )
2211                             {
2212                                 if( answer && ( url->p_acl != NULL ) )
2213                                 {
2214                                     char ip[NI_MAXNUMERICHOST];
2215
2216                                     if( ( httpd_ClientIP( cl, ip ) == NULL )
2217                                      || ACL_Check( url->p_acl, ip ) )
2218                                     {
2219                                         b_hosts_failed = VLC_TRUE;
2220                                         break;
2221                                     }
2222                                 }
2223
2224                                 if( answer && ( *url->psz_user || *url->psz_password ) )
2225                                 {
2226                                     /* create the headers */
2227                                     const char *b64 = httpd_MsgGet( query, "Authorization" ); /* BASIC id */
2228                                     char *user = NULL, *pass = NULL;
2229
2230                                     if( b64 != NULL
2231                                      && !strncasecmp( b64, "BASIC", 5 ) )
2232                                     {
2233                                         b64 += 5;
2234                                         while( *b64 == ' ' )
2235                                             b64++;
2236
2237                                         user = vlc_b64_decode( b64 );
2238                                         if (user != NULL)
2239                                         {
2240                                             pass = strchr (user, ':');
2241                                             if (pass != NULL)
2242                                                 *pass++ = '\0';
2243                                         }
2244                                     }
2245
2246                                     if ((user == NULL) || (pass == NULL)
2247                                      || strcmp (user, url->psz_user)
2248                                      || strcmp (pass, url->psz_password))
2249                                     {
2250                                         httpd_MsgAdd( answer,
2251                                                       "WWW-Authenticate",
2252                                                       "Basic realm=\"%s\"",
2253                                                       url->psz_user );
2254                                         /* We fail for all url */
2255                                         b_auth_failed = VLC_TRUE;
2256                                         free( user );
2257                                         break;
2258                                     }
2259
2260                                     free( user );
2261                                 }
2262
2263                                 if( !url->catch[i_msg].cb( url->catch[i_msg].p_sys, cl, answer, query ) )
2264                                 {
2265                                     if( answer->i_proto == HTTPD_PROTO_NONE )
2266                                     {
2267                                         /* Raw answer from a CGI */
2268                                         cl->i_buffer = cl->i_buffer_size;
2269                                     }
2270                                     else
2271                                         cl->i_buffer = -1;
2272
2273                                     /* only one url can answer */
2274                                     answer = NULL;
2275                                     if( cl->url == NULL )
2276                                     {
2277                                         cl->url = url;
2278                                     }
2279                                 }
2280                             }
2281                         }
2282                     }
2283
2284                     if( answer )
2285                     {
2286                         char *p;
2287
2288                         answer->i_proto  = query->i_proto;
2289                         answer->i_type   = HTTPD_MSG_ANSWER;
2290                         answer->i_version= 0;
2291
2292                         if( b_hosts_failed )
2293                         {
2294                             answer->i_status = 403;
2295                         }
2296                         else if( b_auth_failed )
2297                         {
2298                             answer->i_status = 401;
2299                         }
2300                         else
2301                         {
2302                             /* no url registered */
2303                             answer->i_status = 404;
2304                         }
2305
2306                         answer->i_body = httpd_HtmlError (&p,
2307                                                           answer->i_status,
2308                                                           query->psz_url);
2309                         answer->p_body = (uint8_t *)p;
2310
2311                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2312                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2313                         httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
2314                     }
2315
2316                     cl->i_state = HTTPD_CLIENT_SENDING;
2317                 }
2318             }
2319             else if( cl->i_state == HTTPD_CLIENT_SEND_DONE )
2320             {
2321                 if( cl->i_mode == HTTPD_CLIENT_FILE || cl->answer.i_body_offset == 0 )
2322                 {
2323                     const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
2324                     const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
2325                     vlc_bool_t b_connection = VLC_FALSE;
2326                     vlc_bool_t b_keepalive = VLC_FALSE;
2327                     vlc_bool_t b_query = VLC_FALSE;
2328
2329                     cl->url = NULL;
2330                     if( psz_connection )
2331                     {
2332                         b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
2333                         b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
2334                     }
2335
2336                     if( psz_query )
2337                     {
2338                         b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
2339                     }
2340
2341                     if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
2342                           ( ( cl->answer.i_version == 0 && b_keepalive ) ||
2343                             ( cl->answer.i_version == 1 && !b_connection ) ) ) ||
2344                         ( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
2345                           !b_query && !b_connection ) )
2346                     {
2347                         httpd_MsgClean( &cl->query );
2348                         httpd_MsgInit( &cl->query );
2349
2350                         cl->i_buffer = 0;
2351                         cl->i_buffer_size = 1000;
2352                         free( cl->p_buffer );
2353                         cl->p_buffer = malloc( cl->i_buffer_size );
2354                         cl->i_state = HTTPD_CLIENT_RECEIVING;
2355                     }
2356                     else
2357                     {
2358                         cl->i_state = HTTPD_CLIENT_DEAD;
2359                     }
2360                     httpd_MsgClean( &cl->answer );
2361                 }
2362                 else if( cl->b_read_waiting )
2363                 {
2364                     /* we have a message waiting for us to read it */
2365                     httpd_MsgClean( &cl->answer );
2366                     httpd_MsgClean( &cl->query );
2367
2368                     cl->i_buffer = 0;
2369                     cl->i_buffer_size = 1000;
2370                     free( cl->p_buffer );
2371                     cl->p_buffer = malloc( cl->i_buffer_size );
2372                     cl->i_state = HTTPD_CLIENT_RECEIVING;
2373                     cl->b_read_waiting = VLC_FALSE;
2374                 }
2375                 else
2376                 {
2377                     int64_t i_offset = cl->answer.i_body_offset;
2378                     httpd_MsgClean( &cl->answer );
2379
2380                     cl->answer.i_body_offset = i_offset;
2381                     free( cl->p_buffer );
2382                     cl->p_buffer = NULL;
2383                     cl->i_buffer = 0;
2384                     cl->i_buffer_size = 0;
2385
2386                     cl->i_state = HTTPD_CLIENT_WAITING;
2387                 }
2388             }
2389             else if( cl->i_state == HTTPD_CLIENT_WAITING )
2390             {
2391                 int64_t i_offset = cl->answer.i_body_offset;
2392                 int     i_msg = cl->query.i_type;
2393
2394                 httpd_MsgInit( &cl->answer );
2395                 cl->answer.i_body_offset = i_offset;
2396
2397                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
2398                                           &cl->answer, &cl->query );
2399                 if( cl->answer.i_type != HTTPD_MSG_NONE )
2400                 {
2401                     /* we have new data, so re-enter send mode */
2402                     cl->i_buffer      = 0;
2403                     cl->p_buffer      = cl->answer.p_body;
2404                     cl->i_buffer_size = cl->answer.i_body;
2405                     cl->answer.p_body = NULL;
2406                     cl->answer.i_body = 0;
2407                     cl->i_state = HTTPD_CLIENT_SENDING;
2408                 }
2409             }
2410
2411             /* Special for BIDIR mode we also check reading */
2412             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2413                 cl->i_state == HTTPD_CLIENT_SENDING )
2414             {
2415                 pufd->events |= POLLIN;
2416             }
2417
2418             if (pufd->events != 0)
2419                 nfd++;
2420             else
2421                 b_low_delay = VLC_TRUE;
2422         }
2423         vlc_mutex_unlock( &host->lock );
2424
2425         ufd[nfd].fd = evfd;
2426         ufd[nfd].events = POLLIN;
2427         ufd[nfd].revents = 0;
2428         nfd++;
2429
2430         /* we will wait 20ms (not too big) if HTTPD_CLIENT_WAITING */
2431         switch( poll( ufd, nfd, b_low_delay ? 20 : -1) )
2432         {
2433             case -1:
2434                 if (errno != EINTR)
2435                 {
2436                     /* Kernel on low memory or a bug: pace */
2437                     msg_Err( host, "polling error: %m" );
2438                     msleep( 100000 );
2439                 }
2440             case 0:
2441                 continue;
2442         }
2443
2444         vlc_object_lock( host );
2445         if( ufd[nfd - 1].revents )
2446             b_die = vlc_object_wait( host );
2447         vlc_object_unlock( host );
2448
2449         /* Handle client sockets */
2450         vlc_mutex_lock( &host->lock );
2451         now = mdate();
2452         for( int i_client = 0; i_client < host->i_client; i_client++ )
2453         {
2454             httpd_client_t *cl = host->client[i_client];
2455             const struct pollfd *pufd = &ufd[host->nfd + i_client];
2456
2457             assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
2458
2459             if( cl->fd != pufd->fd )
2460                 continue; // we were not waiting for this client
2461             if( pufd->revents == 0 )
2462                 continue; // no event received
2463
2464             cl->i_activity_date = now;
2465
2466             if( cl->i_state == HTTPD_CLIENT_RECEIVING )
2467             {
2468                 httpd_ClientRecv( cl );
2469             }
2470             else if( cl->i_state == HTTPD_CLIENT_SENDING )
2471             {
2472                 httpd_ClientSend( cl );
2473             }
2474             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_IN )
2475             {
2476                 httpd_ClientTlsHsIn( cl );
2477             }
2478             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT )
2479             {
2480                 httpd_ClientTlsHsOut( cl );
2481             }
2482
2483             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2484                 cl->i_state == HTTPD_CLIENT_SENDING &&
2485                 (pufd->revents & POLLIN) )
2486             {
2487                 cl->b_read_waiting = VLC_TRUE;
2488             }
2489         }
2490         vlc_mutex_unlock( &host->lock );
2491
2492         /* Handle server sockets (accept new connections) */
2493         for( nfd = 0; nfd < host->nfd; nfd++ )
2494         {
2495             httpd_client_t *cl;
2496             int i_state = -1;
2497             int fd = ufd[nfd].fd;
2498
2499             assert (fd == host->fds[nfd]);
2500
2501             if( ufd[nfd].revents == 0 )
2502                 continue;
2503
2504             /* */
2505             fd = accept (fd, NULL, NULL);
2506             if (fd == -1)
2507                 continue;
2508
2509             net_SetupSocket (fd);
2510             if( p_tls != NULL )
2511             {
2512                 switch( tls_ServerSessionHandshake( p_tls, fd ) )
2513                 {
2514                     case -1:
2515                         msg_Err( host, "Rejecting TLS connection" );
2516                         net_Close( fd );
2517                         fd = -1;
2518                         p_tls = NULL;
2519                         break;
2520
2521                     case 1: /* missing input - most likely */
2522                         i_state = HTTPD_CLIENT_TLS_HS_IN;
2523                         break;
2524
2525                     case 2: /* missing output */
2526                         i_state = HTTPD_CLIENT_TLS_HS_OUT;
2527                         break;
2528                 }
2529
2530                 if( (p_tls == NULL) != (host->p_tls == NULL) )
2531                     break; // wasted TLS session, cannot accept() anymore
2532             }
2533
2534             stats_UpdateInteger( host, p_total_counter, 1, NULL );
2535             stats_UpdateInteger( host, p_active_counter, 1, NULL );
2536             cl = httpd_ClientNew( fd, p_tls, now );
2537             p_tls = NULL;
2538             vlc_mutex_lock( &host->lock );
2539             TAB_APPEND( host->i_client, host->client, cl );
2540             vlc_mutex_unlock( &host->lock );
2541             if( i_state != -1 )
2542                 cl->i_state = i_state; // override state for TLS
2543
2544             if (host->p_tls != NULL)
2545                 break; // cannot accept further without new TLS session
2546         }
2547
2548     }
2549
2550     if( p_tls != NULL )
2551         tls_ServerSessionClose( p_tls );
2552     if( p_total_counter )
2553         stats_CounterClean( p_total_counter );
2554     if( p_active_counter )
2555         stats_CounterClean( p_active_counter );
2556 }
2557
2558 #else /* ENABLE_HTTPD */
2559
2560 /* We just define an empty wrapper */
2561 httpd_host_t *httpd_TLSHostNew( vlc_object_t *a, const char *b, 
2562                                 int c,
2563                                 const char *e, const char *f,
2564                                 const char *g, const char* h)
2565 {
2566     msg_Err( a, "HTTP daemon support is disabled" );
2567     return NULL;
2568 }
2569
2570 httpd_host_t *httpd_HostNew( vlc_object_t *a, const char *b,
2571                              int c )
2572 {
2573     msg_Err( a, "HTTP daemon support is disabled" );
2574     return NULL;
2575 }
2576
2577 void httpd_HostDelete( httpd_host_t *a )
2578 {
2579 }
2580
2581 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
2582                            const char *psz_user, const char *psz_password,
2583                            const vlc_acl_t *p_acl )
2584 {
2585     return NULL;
2586 }
2587
2588 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
2589                                  const char *psz_user, const char *psz_password,
2590                                  const vlc_acl_t *p_acl )
2591 {
2592     return NULL;
2593 }
2594
2595 int httpd_UrlCatch( httpd_url_t *a, int b, httpd_callback_t c,
2596                     httpd_callback_sys_t *d )
2597 {
2598     return 0;
2599 }
2600
2601 void httpd_UrlDelete( httpd_url_t *a )
2602 {
2603 }
2604
2605 char* httpd_ClientIP( const httpd_client_t *cl, char *psz_ip )
2606 {
2607     return NULL;
2608 }
2609
2610 char* httpd_ServerIP( const httpd_client_t *cl, char *psz_ip )
2611 {
2612     return NULL;
2613 }
2614
2615 void httpd_ClientModeStream( httpd_client_t *a )
2616 {
2617 }
2618
2619 void httpd_ClientModeBidir( httpd_client_t *a )
2620 {
2621 }
2622
2623 httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
2624 {
2625         return NULL;
2626 }
2627
2628 httpd_file_t *httpd_FileNew( httpd_host_t *host,
2629                              const char *psz_url, const char *psz_mime,
2630                              const char *psz_user, const char *psz_password,
2631                              const vlc_acl_t *p_acl, httpd_file_callback_t pf_fill,
2632                              httpd_file_sys_t *p_sys )
2633 {
2634     return NULL;
2635 }
2636
2637 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
2638                                    const char *psz_user,
2639                                    const char *psz_password,
2640                                    const vlc_acl_t *p_acl,
2641                                    httpd_handler_callback_t pf_fill,
2642                                    httpd_handler_sys_t *p_sys )
2643 {
2644     return NULL;
2645 }
2646
2647 httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
2648 {
2649         return NULL;
2650 }
2651
2652 void httpd_RedirectDelete( httpd_redirect_t *a )
2653 {
2654 }
2655
2656 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
2657                                      const char *psz_url_src )
2658 {
2659     return NULL;
2660 }
2661
2662 void httpd_StreamDelete( httpd_stream_t *a )
2663 {
2664 }
2665
2666 int httpd_StreamHeader( httpd_stream_t *a, uint8_t *b, int c )
2667 {
2668     return 0;
2669 }
2670
2671 int httpd_StreamSend ( httpd_stream_t *a, uint8_t *b, int c )
2672 {
2673     return 0;
2674 }
2675
2676 httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
2677                                  const char *psz_url, const char *psz_mime,
2678                                  const char *psz_user, const char *psz_password,
2679                                  const vlc_acl_t *p_acl )
2680 {
2681     return NULL;
2682 }
2683
2684 void httpd_MsgInit ( httpd_message_t *a )
2685 {
2686 }
2687
2688 void httpd_MsgAdd  ( httpd_message_t *a, const char *b, const char *c, ... )
2689 {
2690 }
2691
2692 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
2693 {
2694     return "";
2695 }
2696
2697 void httpd_MsgClean( httpd_message_t *a )
2698 {
2699 }
2700
2701 #endif /* ENABLE_HTTPD */