Fix race condition if multiple threads delete the same HTTP host
[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_common.h>
31 #include <vlc_httpd.h>
32
33 #include <assert.h>
34
35 #include <vlc_network.h>
36 #include <vlc_tls.h>
37 #include <vlc_acl.h>
38 #include <vlc_strings.h>
39 #include "../libvlc.h"
40
41 #include <string.h>
42 #include <errno.h>
43
44 #ifdef HAVE_UNISTD_H
45 #   include <unistd.h>
46 #endif
47
48 #ifdef HAVE_FCNTL_H
49 #   include <fcntl.h>
50 #endif
51
52 #ifdef HAVE_POLL
53 # include <poll.h>
54 #endif
55
56 #if defined( UNDER_CE )
57 #   include <winsock.h>
58 #elif defined( WIN32 )
59 #   include <winsock2.h>
60 #else
61 #   include <sys/socket.h>
62 #endif
63
64 #if defined( WIN32 )
65 /* We need HUGE buffer otherwise TCP throughput is very limited */
66 #define HTTPD_CL_BUFSIZE 1000000
67 #else
68 #define HTTPD_CL_BUFSIZE 10000
69 #endif
70
71 static void httpd_ClientClean( httpd_client_t *cl );
72
73 struct httpd_t
74 {
75     VLC_COMMON_MEMBERS
76
77     int          i_host;
78     httpd_host_t **host;
79 };
80
81
82 /* each host run in his own thread */
83 struct httpd_host_t
84 {
85     VLC_COMMON_MEMBERS
86
87     httpd_t     *httpd;
88
89     /* ref count */
90     unsigned    i_ref;
91
92     /* address/port and socket for listening at connections */
93     char        *psz_hostname;
94     int         i_port;
95     int         *fds;
96     unsigned     nfd;
97
98     vlc_thread_t thread;
99     vlc_mutex_t lock;
100     vlc_cond_t  wait;
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 const 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     { ".oga",   "audio/ogg" },
231     { ".ogg",   "application/ogg" },
232     { ".ogm",   "application/ogg" },
233     { ".ogv",   "video/ogg" },
234     { ".ogx",   "application/ogg" },
235     { ".spx",   "audio/ogg" },
236     { ".wav",   "audio/wav" },
237     { ".wma",   "audio/x-ms-wma" },
238     { ".wmv",   "video/x-ms-wmv" },
239
240
241     /* end */
242     { "",       "" }
243 };
244
245 static const char *httpd_MimeFromUrl( const char *psz_url )
246 {
247
248     char *psz_ext;
249
250     psz_ext = strrchr( psz_url, '.' );
251     if( psz_ext )
252     {
253         int i;
254
255         for( i = 0; http_mime[i].psz_ext[0] ; i++ )
256         {
257             if( !strcasecmp( http_mime[i].psz_ext, psz_ext ) )
258             {
259                 return http_mime[i].psz_mime;
260             }
261         }
262     }
263     return "application/octet-stream";
264 }
265
266
267 typedef struct
268 {
269     unsigned   i_code;
270     const char psz_reason[36];
271 } http_status_info;
272
273 static const http_status_info http_reason[] =
274 {
275   /*{ 100, "Continue" },
276     { 101, "Switching Protocols" },*/
277     { 200, "OK" },
278   /*{ 201, "Created" },
279     { 202, "Accepted" },
280     { 203, "Non-authoritative information" },
281     { 204, "No content" },
282     { 205, "Reset content" },
283     { 206, "Partial content" },
284     { 250, "Low on storage space" },
285     { 300, "Multiple choices" },*/
286     { 301, "Moved permanently" },
287   /*{ 302, "Moved temporarily" },
288     { 303, "See other" },
289     { 304, "Not modified" },
290     { 305, "Use proxy" },
291     { 307, "Temporary redirect" },
292     { 400, "Bad request" },*/
293     { 401, "Unauthorized" },
294   /*{ 402, "Payment Required" },*/
295     { 403, "Forbidden" },
296     { 404, "Not found" },
297     { 405, "Method not allowed" },
298   /*{ 406, "Not acceptable" },
299     { 407, "Proxy authentication required" },
300     { 408, "Request time-out" },
301     { 409, "Conflict" },
302     { 410, "Gone" },
303     { 411, "Length required" },
304     { 412, "Precondition failed" },
305     { 413, "Request entity too large" },
306     { 414, "Request-URI too large" },
307     { 415, "Unsupported media Type" },
308     { 416, "Requested range not satisfiable" },
309     { 417, "Expectation failed" },
310     { 451, "Parameter not understood" },
311     { 452, "Conference not found" },
312     { 453, "Not enough bandwidth" },*/
313     { 454, "Session not found" },
314   /*{ 455, "Method not valid in this State" },*/
315     { 456, "Header field not valid for resource" },
316   /*{ 457, "Invalid range" },
317     { 458, "Read-only parameter" },*/
318     { 459, "Aggregate operation not allowed" },
319     { 460, "Non-aggregate operation not allowed" },
320     { 461, "Unsupported transport" },
321   /*{ 462, "Destination unreachable" },*/
322     { 500, "Internal server error" },
323     { 501, "Not implemented" },
324   /*{ 502, "Bad gateway" },*/
325     { 503, "Service unavailable" },
326   /*{ 504, "Gateway time-out" },*/
327     { 505, "Protocol version not supported" },
328     { 551, "Option not supported" },
329     { 999, "" }
330 };
331
332 static const char psz_fallback_reason[5][16] =
333 { "Continue", "OK", "Found", "Client error", "Server error" };
334
335 static const char *httpd_ReasonFromCode( unsigned i_code )
336 {
337     const http_status_info *p;
338
339     assert( ( i_code >= 100 ) && ( i_code <= 599 ) );
340
341     for (p = http_reason; i_code > p->i_code; p++);
342
343     if( p->i_code == i_code )
344         return p->psz_reason;
345
346     return psz_fallback_reason[(i_code / 100) - 1];
347 }
348
349
350 static size_t httpd_HtmlError (char **body, int code, const char *url)
351 {
352     const char *errname = httpd_ReasonFromCode (code);
353     assert (errname != NULL);
354
355     int res = asprintf (body,
356         "<?xml version=\"1.0\" encoding=\"ascii\" ?>\n"
357         "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
358         " \"http://www.w3.org/TR/xhtml10/DTD/xhtml10strict.dtd\">\n"
359         "<html lang=\"en\">\n"
360         "<head>\n"
361         "<title>%s</title>\n"
362         "</head>\n"
363         "<body>\n"
364         "<h1>%d %s%s%s%s</h1>\n"
365         "<hr />\n"
366         "<a href=\"http://www.videolan.org\">VideoLAN</a>\n"
367         "</body>\n"
368         "</html>\n", errname, code, errname,
369         (url ? " (" : ""), (url ? url : ""), (url ? ")" : ""));
370
371     if (res == -1)
372     {
373         *body = NULL;
374         return 0;
375     }
376
377     return (size_t)res;
378 }
379
380
381 /*****************************************************************************
382  * High Level Functions: httpd_file_t
383  *****************************************************************************/
384 struct httpd_file_t
385 {
386     httpd_url_t *url;
387
388     char *psz_url;
389     char *psz_mime;
390
391     httpd_file_callback_t pf_fill;
392     httpd_file_sys_t      *p_sys;
393
394 };
395
396 static int
397 httpd_FileCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
398                     httpd_message_t *answer, const httpd_message_t *query )
399 {
400     httpd_file_t *file = (httpd_file_t*)p_sys;
401     uint8_t **pp_body, *p_body;
402     const char *psz_connection;
403     int *pi_body, i_body;
404
405     if( answer == NULL || query == NULL )
406     {
407         return VLC_SUCCESS;
408     }
409     answer->i_proto  = HTTPD_PROTO_HTTP;
410     answer->i_version= 1;
411     answer->i_type   = HTTPD_MSG_ANSWER;
412
413     answer->i_status = 200;
414
415     httpd_MsgAdd( answer, "Content-type",  "%s", file->psz_mime );
416     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
417
418     if( query->i_type != HTTPD_MSG_HEAD )
419     {
420         pp_body = &answer->p_body;
421         pi_body = &answer->i_body;
422     }
423     else
424     {
425         /* The file still needs to be executed. */
426         p_body = NULL;
427         i_body = 0;
428         pp_body = &p_body;
429         pi_body = &i_body;
430     }
431
432     if( query->i_type == HTTPD_MSG_POST )
433     {
434         /* msg_Warn not supported */
435     }
436
437     uint8_t *psz_args = query->psz_args;
438     file->pf_fill( file->p_sys, file, psz_args, pp_body, pi_body );
439
440     if( query->i_type == HTTPD_MSG_HEAD && p_body != NULL )
441     {
442         free( p_body );
443     }
444
445     /* We respect client request */
446     psz_connection = httpd_MsgGet( &cl->query, "Connection" );
447     if( psz_connection != NULL )
448     {
449         httpd_MsgAdd( answer, "Connection", "%s", psz_connection );
450     }
451
452     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
453
454     return VLC_SUCCESS;
455 }
456
457 httpd_file_t *httpd_FileNew( httpd_host_t *host,
458                              const char *psz_url, const char *psz_mime,
459                              const char *psz_user, const char *psz_password,
460                              const vlc_acl_t *p_acl, httpd_file_callback_t pf_fill,
461                              httpd_file_sys_t *p_sys )
462 {
463     httpd_file_t *file = malloc( sizeof( httpd_file_t ) );
464
465     if( ( file->url = httpd_UrlNewUnique( host, psz_url, psz_user,
466                                           psz_password, p_acl )
467         ) == NULL )
468     {
469         free( file );
470         return NULL;
471     }
472
473     file->psz_url  = strdup( psz_url );
474     if( psz_mime && *psz_mime )
475     {
476         file->psz_mime = strdup( psz_mime );
477     }
478     else
479     {
480         file->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
481     }
482
483     file->pf_fill = pf_fill;
484     file->p_sys   = p_sys;
485
486     httpd_UrlCatch( file->url, HTTPD_MSG_HEAD, httpd_FileCallBack,
487                     (httpd_callback_sys_t*)file );
488     httpd_UrlCatch( file->url, HTTPD_MSG_GET,  httpd_FileCallBack,
489                     (httpd_callback_sys_t*)file );
490     httpd_UrlCatch( file->url, HTTPD_MSG_POST, httpd_FileCallBack,
491                     (httpd_callback_sys_t*)file );
492
493     return file;
494 }
495
496 httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
497 {
498     httpd_file_sys_t *p_sys = file->p_sys;
499
500     httpd_UrlDelete( file->url );
501
502     free( file->psz_url );
503     free( file->psz_mime );
504
505     free( file );
506
507     return p_sys;
508 }
509
510 /*****************************************************************************
511  * High Level Functions: httpd_handler_t (for CGIs)
512  *****************************************************************************/
513 struct httpd_handler_t
514 {
515     httpd_url_t *url;
516
517     httpd_handler_callback_t pf_fill;
518     httpd_handler_sys_t      *p_sys;
519
520 };
521
522 static int
523 httpd_HandlerCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
524                        httpd_message_t *answer, const httpd_message_t *query )
525 {
526     httpd_handler_t *handler = (httpd_handler_t*)p_sys;
527     char psz_remote_addr[NI_MAXNUMERICHOST];
528
529     if( answer == NULL || query == NULL )
530     {
531         return VLC_SUCCESS;
532     }
533     answer->i_proto  = HTTPD_PROTO_NONE;
534     answer->i_type   = HTTPD_MSG_ANSWER;
535
536     /* We do it ourselves, thanks */
537     answer->i_status = 0;
538
539     if( httpd_ClientIP( cl, psz_remote_addr ) == NULL )
540         *psz_remote_addr = '\0';
541
542     uint8_t *psz_args = query->psz_args;
543     handler->pf_fill( handler->p_sys, handler, query->psz_url, psz_args,
544                       query->i_type, query->p_body, query->i_body,
545                       psz_remote_addr, NULL,
546                       &answer->p_body, &answer->i_body );
547
548     if( query->i_type == HTTPD_MSG_HEAD )
549     {
550         char *p = (char *)answer->p_body;
551
552         /* Looks for end of header (i.e. one empty line) */
553         while ( (p = strchr( p, '\r' )) != NULL )
554         {
555             if( p[1] && p[1] == '\n' && p[2] && p[2] == '\r'
556                  && p[3] && p[3] == '\n' )
557             {
558                 break;
559             }
560         }
561
562         if( p != NULL )
563         {
564             p[4] = '\0';
565             answer->i_body = strlen((char*)answer->p_body) + 1;
566             answer->p_body = realloc( answer->p_body, answer->i_body );
567         }
568     }
569
570     if( strncmp( (char *)answer->p_body, "HTTP/1.", 7 ) )
571     {
572         int i_status, i_headers;
573         char *psz_headers, *psz_new;
574         const char *psz_status;
575
576         if( !strncmp( (char *)answer->p_body, "Status: ", 8 ) )
577         {
578             /* Apache-style */
579             i_status = strtol( (char *)&answer->p_body[8], &psz_headers, 0 );
580             if( *psz_headers ) psz_headers++;
581             if( *psz_headers ) psz_headers++;
582             i_headers = answer->i_body - (psz_headers - (char *)answer->p_body);
583         }
584         else
585         {
586             i_status = 200;
587             psz_headers = (char *)answer->p_body;
588             i_headers = answer->i_body;
589         }
590
591         psz_status = httpd_ReasonFromCode( i_status );
592         answer->i_body = sizeof("HTTP/1.0 xxx \r\n")
593                         + strlen(psz_status) + i_headers - 1;
594         psz_new = (char *)malloc( answer->i_body + 1);
595         sprintf( psz_new, "HTTP/1.0 %03d %s\r\n", i_status, psz_status );
596         memcpy( &psz_new[strlen(psz_new)], psz_headers, i_headers );
597         free( answer->p_body );
598         answer->p_body = (uint8_t *)psz_new;
599     }
600
601     return VLC_SUCCESS;
602 }
603
604 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
605                                    const char *psz_user,
606                                    const char *psz_password,
607                                    const vlc_acl_t *p_acl,
608                                    httpd_handler_callback_t pf_fill,
609                                    httpd_handler_sys_t *p_sys )
610 {
611     httpd_handler_t *handler = malloc( sizeof( httpd_handler_t ) );
612
613     if( ( handler->url = httpd_UrlNewUnique( host, psz_url, psz_user,
614                                              psz_password, p_acl )
615         ) == NULL )
616     {
617         free( handler );
618         return NULL;
619     }
620
621     handler->pf_fill = pf_fill;
622     handler->p_sys   = p_sys;
623
624     httpd_UrlCatch( handler->url, HTTPD_MSG_HEAD, httpd_HandlerCallBack,
625                     (httpd_callback_sys_t*)handler );
626     httpd_UrlCatch( handler->url, HTTPD_MSG_GET,  httpd_HandlerCallBack,
627                     (httpd_callback_sys_t*)handler );
628     httpd_UrlCatch( handler->url, HTTPD_MSG_POST, httpd_HandlerCallBack,
629                     (httpd_callback_sys_t*)handler );
630
631     return handler;
632 }
633
634 httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
635 {
636     httpd_handler_sys_t *p_sys = handler->p_sys;
637     httpd_UrlDelete( handler->url );
638     free( handler );
639     return p_sys;
640 }
641
642 /*****************************************************************************
643  * High Level Functions: httpd_redirect_t
644  *****************************************************************************/
645 struct httpd_redirect_t
646 {
647     httpd_url_t *url;
648     char        *psz_dst;
649 };
650
651 static int httpd_RedirectCallBack( httpd_callback_sys_t *p_sys,
652                                    httpd_client_t *cl, httpd_message_t *answer,
653                                    const httpd_message_t *query )
654 {
655     httpd_redirect_t *rdir = (httpd_redirect_t*)p_sys;
656     char *p_body;
657     (void)cl;
658
659     if( answer == NULL || query == NULL )
660     {
661         return VLC_SUCCESS;
662     }
663     answer->i_proto  = HTTPD_PROTO_HTTP;
664     answer->i_version= 1;
665     answer->i_type   = HTTPD_MSG_ANSWER;
666     answer->i_status = 301;
667
668     answer->i_body = httpd_HtmlError (&p_body, 301, rdir->psz_dst);
669     answer->p_body = (unsigned char *)p_body;
670
671     /* XXX check if it's ok or we need to set an absolute url */
672     httpd_MsgAdd( answer, "Location",  "%s", rdir->psz_dst );
673
674     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
675
676     return VLC_SUCCESS;
677 }
678
679 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
680                                      const char *psz_url_src )
681 {
682     httpd_redirect_t *rdir = malloc( sizeof( httpd_redirect_t ) );
683
684     if( !( rdir->url = httpd_UrlNewUnique( host, psz_url_src, NULL, NULL, NULL ) ) )
685     {
686         free( rdir );
687         return NULL;
688     }
689     rdir->psz_dst = strdup( psz_url_dst );
690
691     /* Redirect apply for all HTTP request and RTSP DESCRIBE resquest */
692     httpd_UrlCatch( rdir->url, HTTPD_MSG_HEAD, httpd_RedirectCallBack,
693                     (httpd_callback_sys_t*)rdir );
694     httpd_UrlCatch( rdir->url, HTTPD_MSG_GET, httpd_RedirectCallBack,
695                     (httpd_callback_sys_t*)rdir );
696     httpd_UrlCatch( rdir->url, HTTPD_MSG_POST, httpd_RedirectCallBack,
697                     (httpd_callback_sys_t*)rdir );
698     httpd_UrlCatch( rdir->url, HTTPD_MSG_DESCRIBE, httpd_RedirectCallBack,
699                     (httpd_callback_sys_t*)rdir );
700
701     return rdir;
702 }
703 void httpd_RedirectDelete( httpd_redirect_t *rdir )
704 {
705     httpd_UrlDelete( rdir->url );
706     free( rdir->psz_dst );
707     free( rdir );
708 }
709
710 /*****************************************************************************
711  * High Level Funtions: httpd_stream_t
712  *****************************************************************************/
713 struct httpd_stream_t
714 {
715     vlc_mutex_t lock;
716     httpd_url_t *url;
717
718     char    *psz_mime;
719
720     /* Header to send as first packet */
721     uint8_t *p_header;
722     int     i_header;
723
724     /* circular buffer */
725     int         i_buffer_size;      /* buffer size, can't be reallocated smaller */
726     uint8_t     *p_buffer;          /* buffer */
727     int64_t     i_buffer_pos;       /* absolute position from begining */
728     int64_t     i_buffer_last_pos;  /* a new connection will start with that */
729 };
730
731 static int httpd_StreamCallBack( httpd_callback_sys_t *p_sys,
732                                  httpd_client_t *cl, httpd_message_t *answer,
733                                  const httpd_message_t *query )
734 {
735     httpd_stream_t *stream = (httpd_stream_t*)p_sys;
736
737     if( answer == NULL || query == NULL || cl == NULL )
738     {
739         return VLC_SUCCESS;
740     }
741
742     if( answer->i_body_offset > 0 )
743     {
744         int64_t i_write;
745         int     i_pos;
746
747 #if 0
748         fprintf( stderr, "httpd_StreamCallBack i_body_offset=%lld\n",
749                  answer->i_body_offset );
750 #endif
751
752         if( answer->i_body_offset >= stream->i_buffer_pos )
753         {
754             /* fprintf( stderr, "httpd_StreamCallBack: no data\n" ); */
755             return VLC_EGENERIC;    /* wait, no data available */
756         }
757         if( answer->i_body_offset + stream->i_buffer_size <
758             stream->i_buffer_pos )
759         {
760             /* this client isn't fast enough */
761 #if 0
762             fprintf( stderr, "fixing i_body_offset (old=%lld new=%lld)\n",
763                      answer->i_body_offset, stream->i_buffer_last_pos );
764 #endif
765             answer->i_body_offset = stream->i_buffer_last_pos;
766         }
767
768         i_pos   = answer->i_body_offset % stream->i_buffer_size;
769         i_write = stream->i_buffer_pos - answer->i_body_offset;
770         if( i_write > HTTPD_CL_BUFSIZE )
771         {
772             i_write = HTTPD_CL_BUFSIZE;
773         }
774         else if( i_write <= 0 )
775         {
776             return VLC_EGENERIC;    /* wait, no data available */
777         }
778
779         /* Don't go past the end of the circular buffer */
780         i_write = __MIN( i_write, stream->i_buffer_size - i_pos );
781
782         /* using HTTPD_MSG_ANSWER -> data available */
783         answer->i_proto  = HTTPD_PROTO_HTTP;
784         answer->i_version= 0;
785         answer->i_type   = HTTPD_MSG_ANSWER;
786
787         answer->i_body = i_write;
788         answer->p_body = malloc( i_write );
789         memcpy( answer->p_body, &stream->p_buffer[i_pos], i_write );
790
791         answer->i_body_offset += i_write;
792
793         return VLC_SUCCESS;
794     }
795     else
796     {
797         answer->i_proto  = HTTPD_PROTO_HTTP;
798         answer->i_version= 0;
799         answer->i_type   = HTTPD_MSG_ANSWER;
800
801         answer->i_status = 200;
802
803         if( query->i_type != HTTPD_MSG_HEAD )
804         {
805             httpd_ClientModeStream( cl );
806             vlc_mutex_lock( &stream->lock );
807             /* Send the header */
808             if( stream->i_header > 0 )
809             {
810                 answer->i_body = stream->i_header;
811                 answer->p_body = malloc( stream->i_header );
812                 memcpy( answer->p_body, stream->p_header, stream->i_header );
813             }
814             answer->i_body_offset = stream->i_buffer_last_pos;
815             vlc_mutex_unlock( &stream->lock );
816         }
817         else
818         {
819             httpd_MsgAdd( answer, "Content-Length", "%d", 0 );
820             answer->i_body_offset = 0;
821         }
822
823         if( !strcmp( stream->psz_mime, "video/x-ms-asf-stream" ) )
824         {
825             bool b_xplaystream = false;
826             int i;
827
828             httpd_MsgAdd( answer, "Content-type", "%s",
829                           "application/octet-stream" );
830             httpd_MsgAdd( answer, "Server", "Cougar 4.1.0.3921" );
831             httpd_MsgAdd( answer, "Pragma", "no-cache" );
832             httpd_MsgAdd( answer, "Pragma", "client-id=%d", rand()&0x7fff );
833             httpd_MsgAdd( answer, "Pragma", "features=\"broadcast\"" );
834
835             /* Check if there is a xPlayStrm=1 */
836             for( i = 0; i < query->i_name; i++ )
837             {
838                 if( !strcasecmp( query->name[i],  "Pragma" ) &&
839                     strstr( query->value[i], "xPlayStrm=1" ) )
840                 {
841                     b_xplaystream = true;
842                 }
843             }
844
845             if( !b_xplaystream )
846             {
847                 answer->i_body_offset = 0;
848             }
849         }
850         else
851         {
852             httpd_MsgAdd( answer, "Content-type",  "%s", stream->psz_mime );
853         }
854         httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
855         return VLC_SUCCESS;
856     }
857 }
858
859 httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
860                                  const char *psz_url, const char *psz_mime,
861                                  const char *psz_user, const char *psz_password,
862                                  const vlc_acl_t *p_acl )
863 {
864     httpd_stream_t *stream = malloc( sizeof( httpd_stream_t ) );
865
866     if( ( stream->url = httpd_UrlNewUnique( host, psz_url, psz_user,
867                                             psz_password, p_acl )
868         ) == NULL )
869     {
870         free( stream );
871         return NULL;
872     }
873     vlc_mutex_init( &stream->lock );
874     if( psz_mime && *psz_mime )
875     {
876         stream->psz_mime = strdup( psz_mime );
877     }
878     else
879     {
880         stream->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
881     }
882     stream->i_header = 0;
883     stream->p_header = NULL;
884     stream->i_buffer_size = 5000000;    /* 5 Mo per stream */
885     stream->p_buffer = malloc( stream->i_buffer_size );
886     /* We set to 1 to make life simpler
887      * (this way i_body_offset can never be 0) */
888     stream->i_buffer_pos = 1;
889     stream->i_buffer_last_pos = 1;
890
891     httpd_UrlCatch( stream->url, HTTPD_MSG_HEAD, httpd_StreamCallBack,
892                     (httpd_callback_sys_t*)stream );
893     httpd_UrlCatch( stream->url, HTTPD_MSG_GET, httpd_StreamCallBack,
894                     (httpd_callback_sys_t*)stream );
895     httpd_UrlCatch( stream->url, HTTPD_MSG_POST, httpd_StreamCallBack,
896                     (httpd_callback_sys_t*)stream );
897
898     return stream;
899 }
900
901 int httpd_StreamHeader( httpd_stream_t *stream, uint8_t *p_data, int i_data )
902 {
903     vlc_mutex_lock( &stream->lock );
904     free( stream->p_header );
905     stream->p_header = NULL;
906
907     stream->i_header = i_data;
908     if( i_data > 0 )
909     {
910         stream->p_header = malloc( i_data );
911         memcpy( stream->p_header, p_data, i_data );
912     }
913     vlc_mutex_unlock( &stream->lock );
914
915     return VLC_SUCCESS;
916 }
917
918 int httpd_StreamSend( httpd_stream_t *stream, uint8_t *p_data, int i_data )
919 {
920     int i_count;
921     int i_pos;
922
923     if( i_data < 0 || p_data == NULL )
924     {
925         return VLC_SUCCESS;
926     }
927     vlc_mutex_lock( &stream->lock );
928
929     /* save this pointer (to be used by new connection) */
930     stream->i_buffer_last_pos = stream->i_buffer_pos;
931
932     i_pos = stream->i_buffer_pos % stream->i_buffer_size;
933     i_count = i_data;
934     while( i_count > 0)
935     {
936         int i_copy;
937
938         i_copy = __MIN( i_count, stream->i_buffer_size - i_pos );
939
940         /* Ok, we can't go past the end of our buffer */
941         memcpy( &stream->p_buffer[i_pos], p_data, i_copy );
942
943         i_pos = ( i_pos + i_copy ) % stream->i_buffer_size;
944         i_count -= i_copy;
945         p_data  += i_copy;
946     }
947
948     stream->i_buffer_pos += i_data;
949
950     vlc_mutex_unlock( &stream->lock );
951     return VLC_SUCCESS;
952 }
953
954 void httpd_StreamDelete( httpd_stream_t *stream )
955 {
956     httpd_UrlDelete( stream->url );
957     vlc_mutex_destroy( &stream->lock );
958     free( stream->psz_mime );
959     free( stream->p_header );
960     free( stream->p_buffer );
961     free( stream );
962 }
963
964 /*****************************************************************************
965  * Low level
966  *****************************************************************************/
967 static void* httpd_HostThread( void * );
968
969 /* create a new host */
970 httpd_host_t *httpd_HostNew( vlc_object_t *p_this, const char *psz_host,
971                              int i_port )
972 {
973     return httpd_TLSHostNew( p_this, psz_host, i_port, NULL, NULL, NULL, NULL
974                            );
975 }
976
977 static const char psz_object_type[] = "http server";
978 static vlc_mutex_t httpd_mutex = VLC_STATIC_MUTEX;
979
980 httpd_host_t *httpd_TLSHostNew( vlc_object_t *p_this, const char *psz_hostname,
981                                 int i_port,
982                                 const char *psz_cert, const char *psz_key,
983                                 const char *psz_ca, const char *psz_crl )
984 {
985     httpd_t      *httpd;
986     httpd_host_t *host;
987     tls_server_t *p_tls;
988     char *psz_host;
989     vlc_value_t  ptrval;
990     int i;
991
992     if( psz_hostname == NULL )
993         psz_hostname = "";
994
995     psz_host = strdup( psz_hostname );
996     if( psz_host == NULL )
997         return NULL;
998
999     /* to be sure to avoid multiple creation */
1000     vlc_mutex_lock( &httpd_mutex );
1001     httpd = libvlc_priv (p_this->p_libvlc)->p_httpd;
1002
1003     if( httpd == NULL )
1004     {
1005         msg_Info( p_this, "creating httpd" );
1006         httpd = (httpd_t *)vlc_custom_create( p_this, sizeof (*httpd),
1007                                               VLC_OBJECT_GENERIC,
1008                                               psz_object_type );
1009         if( httpd == NULL )
1010         {
1011             vlc_mutex_unlock( &httpd_mutex );
1012             free( psz_host );
1013             return NULL;
1014         }
1015
1016         httpd->i_host = 0;
1017         httpd->host   = NULL;
1018
1019         ptrval.p_address = httpd;
1020         libvlc_priv (p_this->p_libvlc)->p_httpd = httpd;
1021         vlc_object_attach( httpd, p_this->p_libvlc );
1022     }
1023
1024     /* verify if it already exist */
1025     for( i = httpd->i_host - 1; i >= 0; i-- )
1026     {
1027         host = httpd->host[i];
1028
1029         /* cannot mix TLS and non-TLS hosts */
1030         if( ( ( httpd->host[i]->p_tls != NULL ) != ( psz_cert != NULL ) )
1031          || ( host->i_port != i_port )
1032          || strcmp( host->psz_hostname, psz_hostname ) )
1033             continue;
1034
1035         /* Increase existing matching host reference count.
1036          * The reference count is written under both the global httpd and the
1037          * host lock. It is read with either or both locks held. The global
1038          * lock is always acquired first. */
1039         vlc_mutex_lock( &host->lock );
1040         host->i_ref++;
1041         vlc_mutex_unlock( &host->lock );
1042
1043         vlc_mutex_unlock( &httpd_mutex );
1044         return host;
1045     }
1046
1047     host = NULL;
1048
1049     /* determine TLS configuration */
1050     if ( psz_cert != NULL )
1051     {
1052         p_tls = tls_ServerCreate( p_this, psz_cert, psz_key );
1053         if ( p_tls == NULL )
1054         {
1055             msg_Err( p_this, "TLS initialization error" );
1056             goto error;
1057         }
1058
1059         if ( ( psz_ca != NULL) && tls_ServerAddCA( p_tls, psz_ca ) )
1060         {
1061             msg_Err( p_this, "TLS CA error" );
1062             goto error;
1063         }
1064
1065         if ( ( psz_crl != NULL) && tls_ServerAddCRL( p_tls, psz_crl ) )
1066         {
1067             msg_Err( p_this, "TLS CRL error" );
1068             goto error;
1069         }
1070     }
1071     else
1072         p_tls = NULL;
1073
1074     /* create the new host */
1075     host = (httpd_host_t *)vlc_custom_create( p_this, sizeof (*host),
1076                                               VLC_OBJECT_GENERIC,
1077                                               psz_object_type );
1078     if (host == NULL)
1079         goto error;
1080
1081     host->httpd = httpd;
1082     vlc_mutex_init( &host->lock );
1083     vlc_cond_init( &host->wait );
1084     host->i_ref = 1;
1085
1086     host->fds = net_ListenTCP( p_this, psz_host, i_port );
1087     if( host->fds == NULL )
1088     {
1089         msg_Err( p_this, "cannot create socket(s) for HTTP host" );
1090         goto error;
1091     }
1092     for (host->nfd = 0; host->fds[host->nfd] != -1; host->nfd++);
1093
1094     if( vlc_object_waitpipe( VLC_OBJECT( host ) ) == -1 )
1095     {
1096         msg_Err( host, "signaling pipe error: %m" );
1097         goto error;
1098     }
1099
1100     host->i_port = i_port;
1101     host->psz_hostname = psz_host;
1102
1103     host->i_url     = 0;
1104     host->url       = NULL;
1105     host->i_client  = 0;
1106     host->client    = NULL;
1107
1108     host->p_tls = p_tls;
1109
1110     /* create the thread */
1111     if( vlc_clone( &host->thread, httpd_HostThread, host,
1112                    VLC_THREAD_PRIORITY_LOW ) )
1113     {
1114         msg_Err( p_this, "cannot spawn http host thread" );
1115         goto error;
1116     }
1117
1118     /* now add it to httpd */
1119     TAB_APPEND( httpd->i_host, httpd->host, host );
1120     vlc_mutex_unlock( &httpd_mutex );
1121
1122     return host;
1123
1124 error:
1125     free( psz_host );
1126     if( httpd->i_host <= 0 )
1127     {
1128         libvlc_priv (httpd->p_libvlc)->p_httpd = NULL;
1129         vlc_object_detach( httpd );
1130         vlc_object_release( httpd );
1131     }
1132     vlc_mutex_unlock( &httpd_mutex );
1133
1134     if( host != NULL )
1135     {
1136         net_ListenClose( host->fds );
1137         vlc_cond_destroy( &host->wait );
1138         vlc_mutex_destroy( &host->lock );
1139         vlc_object_release( host );
1140     }
1141
1142     if( p_tls != NULL )
1143         tls_ServerDelete( p_tls );
1144
1145     return NULL;
1146 }
1147
1148 /* delete a host */
1149 void httpd_HostDelete( httpd_host_t *host )
1150 {
1151     httpd_t *httpd = host->httpd;
1152     int i;
1153     bool delete = false;
1154
1155     vlc_mutex_lock( &httpd_mutex );
1156
1157     vlc_mutex_lock( &host->lock );
1158     host->i_ref--;
1159     if( host->i_ref == 0 )
1160     {
1161         vlc_cond_signal( &host->wait );
1162         delete = true;
1163     }
1164     vlc_mutex_unlock( &host->lock );
1165     if( !delete )
1166     {
1167         /* still used */
1168         vlc_mutex_unlock( &httpd_mutex );
1169         msg_Dbg( host, "httpd_HostDelete: host still in use" );
1170         return;
1171     }
1172     TAB_REMOVE( httpd->i_host, httpd->host, host );
1173
1174     vlc_object_kill( host );
1175     vlc_join( host->thread, NULL );
1176
1177     msg_Dbg( host, "HTTP host removed" );
1178
1179     for( i = 0; i < host->i_url; i++ )
1180     {
1181         msg_Err( host, "url still registered: %s", host->url[i]->psz_url );
1182     }
1183     for( i = 0; i < host->i_client; i++ )
1184     {
1185         httpd_client_t *cl = host->client[i];
1186         msg_Warn( host, "client still connected" );
1187         httpd_ClientClean( cl );
1188         TAB_REMOVE( host->i_client, host->client, cl );
1189         free( cl );
1190         i--;
1191         /* TODO */
1192     }
1193
1194     if( host->p_tls != NULL)
1195         tls_ServerDelete( host->p_tls );
1196
1197     net_ListenClose( host->fds );
1198     free( host->psz_hostname );
1199
1200     vlc_cond_destroy( &host->wait );
1201     vlc_mutex_destroy( &host->lock );
1202     vlc_object_release( host );
1203
1204     if( httpd->i_host <= 0 )
1205     {
1206         msg_Dbg( httpd, "no hosts left, stopping httpd" );
1207
1208         libvlc_priv (httpd->p_libvlc)->p_httpd = NULL;
1209         vlc_object_detach( httpd );
1210         vlc_object_release( httpd );
1211     }
1212     vlc_mutex_unlock( &httpd_mutex );
1213 }
1214
1215 /* register a new url */
1216 static httpd_url_t *httpd_UrlNewPrivate( httpd_host_t *host, const char *psz_url,
1217                                          const char *psz_user, const char *psz_password,
1218                                          const vlc_acl_t *p_acl, bool b_check )
1219 {
1220     httpd_url_t *url;
1221     int         i;
1222
1223     assert( psz_url != NULL );
1224
1225     vlc_mutex_lock( &host->lock );
1226     if( b_check )
1227     {
1228         for( i = 0; i < host->i_url; i++ )
1229         {
1230             if( !strcmp( psz_url, host->url[i]->psz_url ) )
1231             {
1232                 msg_Warn( host->httpd,
1233                           "cannot add '%s' (url already defined)", psz_url );
1234                 vlc_mutex_unlock( &host->lock );
1235                 return NULL;
1236             }
1237         }
1238     }
1239
1240     url = malloc( sizeof( httpd_url_t ) );
1241     url->host = host;
1242
1243     vlc_mutex_init( &url->lock );
1244     url->psz_url = strdup( psz_url );
1245     url->psz_user = strdup( psz_user ? psz_user : "" );
1246     url->psz_password = strdup( psz_password ? psz_password : "" );
1247     url->p_acl = ACL_Duplicate( host, p_acl );
1248     for( i = 0; i < HTTPD_MSG_MAX; i++ )
1249     {
1250         url->catch[i].cb = NULL;
1251         url->catch[i].p_sys = NULL;
1252     }
1253
1254     TAB_APPEND( host->i_url, host->url, url );
1255     vlc_cond_signal( &host->wait );
1256     vlc_mutex_unlock( &host->lock );
1257
1258     return url;
1259 }
1260
1261 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
1262                            const char *psz_user, const char *psz_password,
1263                            const vlc_acl_t *p_acl )
1264 {
1265     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1266                                 psz_password, p_acl, false );
1267 }
1268
1269 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
1270                                  const char *psz_user, const char *psz_password,
1271                                  const vlc_acl_t *p_acl )
1272 {
1273     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1274                                 psz_password, p_acl, true );
1275 }
1276
1277 /* register callback on a url */
1278 int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
1279                     httpd_callback_sys_t *p_sys )
1280 {
1281     vlc_mutex_lock( &url->lock );
1282     url->catch[i_msg].cb   = cb;
1283     url->catch[i_msg].p_sys= p_sys;
1284     vlc_mutex_unlock( &url->lock );
1285
1286     return VLC_SUCCESS;
1287 }
1288
1289 /* delete an url */
1290 void httpd_UrlDelete( httpd_url_t *url )
1291 {
1292     httpd_host_t *host = url->host;
1293     int          i;
1294
1295     vlc_mutex_lock( &host->lock );
1296     TAB_REMOVE( host->i_url, host->url, url );
1297
1298     vlc_mutex_destroy( &url->lock );
1299     free( url->psz_url );
1300     free( url->psz_user );
1301     free( url->psz_password );
1302     ACL_Destroy( url->p_acl );
1303
1304     for( i = 0; i < host->i_client; i++ )
1305     {
1306         httpd_client_t *client = host->client[i];
1307
1308         if( client->url == url )
1309         {
1310             /* TODO complete it */
1311             msg_Warn( host, "force closing connections" );
1312             httpd_ClientClean( client );
1313             TAB_REMOVE( host->i_client, host->client, client );
1314             free( client );
1315             i--;
1316         }
1317     }
1318     free( url );
1319     vlc_mutex_unlock( &host->lock );
1320 }
1321
1322 static void httpd_MsgInit( httpd_message_t *msg )
1323 {
1324     msg->cl         = NULL;
1325     msg->i_type     = HTTPD_MSG_NONE;
1326     msg->i_proto    = HTTPD_PROTO_NONE;
1327     msg->i_version  = -1; /* FIXME */
1328
1329     msg->i_status   = 0;
1330
1331     msg->psz_url    = NULL;
1332     msg->psz_args   = NULL;
1333
1334     msg->i_channel  = -1;
1335
1336     msg->i_name     = 0;
1337     msg->name       = NULL;
1338     msg->i_value    = 0;
1339     msg->value      = NULL;
1340
1341     msg->i_body_offset = 0;
1342     msg->i_body        = 0;
1343     msg->p_body        = NULL;
1344 }
1345
1346 static void httpd_MsgClean( httpd_message_t *msg )
1347 {
1348     int i;
1349
1350     free( msg->psz_url );
1351     free( msg->psz_args );
1352     for( i = 0; i < msg->i_name; i++ )
1353     {
1354         free( msg->name[i] );
1355         free( msg->value[i] );
1356     }
1357     free( msg->name );
1358     free( msg->value );
1359     free( msg->p_body );
1360     httpd_MsgInit( msg );
1361 }
1362
1363 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
1364 {
1365     int i;
1366
1367     for( i = 0; i < msg->i_name; i++ )
1368     {
1369         if( !strcasecmp( msg->name[i], name ))
1370         {
1371             return msg->value[i];
1372         }
1373     }
1374     return NULL;
1375 }
1376
1377 void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
1378 {
1379     va_list args;
1380     char *value = NULL;
1381
1382     va_start( args, psz_value );
1383     if( vasprintf( &value, psz_value, args ) == -1 )
1384         value = NULL;
1385     va_end( args );
1386
1387     if( value == NULL )
1388         return;
1389
1390     name = strdup( name );
1391     if( name == NULL )
1392     {
1393         free( value );
1394         return;
1395     }
1396
1397     TAB_APPEND( msg->i_name,  msg->name,  (char*)name );
1398     TAB_APPEND( msg->i_value, msg->value, value );
1399 }
1400
1401 static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
1402 {
1403     cl->i_state = HTTPD_CLIENT_RECEIVING;
1404     cl->i_activity_date = now;
1405     cl->i_activity_timeout = INT64_C(10000000);
1406     cl->i_buffer_size = HTTPD_CL_BUFSIZE;
1407     cl->i_buffer = 0;
1408     cl->p_buffer = malloc( cl->i_buffer_size );
1409     cl->i_mode   = HTTPD_CLIENT_FILE;
1410     cl->b_read_waiting = false;
1411
1412     httpd_MsgInit( &cl->query );
1413     httpd_MsgInit( &cl->answer );
1414 }
1415
1416 void httpd_ClientModeStream( httpd_client_t *cl )
1417 {
1418     cl->i_mode   = HTTPD_CLIENT_STREAM;
1419 }
1420
1421 void httpd_ClientModeBidir( httpd_client_t *cl )
1422 {
1423     cl->i_mode   = HTTPD_CLIENT_BIDIR;
1424 }
1425
1426 char* httpd_ClientIP( const httpd_client_t *cl, char *psz_ip )
1427 {
1428     return net_GetPeerAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1429 }
1430
1431 char* httpd_ServerIP( const httpd_client_t *cl, char *psz_ip )
1432 {
1433     return net_GetSockAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1434 }
1435
1436 static void httpd_ClientClean( httpd_client_t *cl )
1437 {
1438     if( cl->fd >= 0 )
1439     {
1440         if( cl->p_tls != NULL )
1441             tls_ServerSessionClose( cl->p_tls );
1442         net_Close( cl->fd );
1443         cl->fd = -1;
1444     }
1445
1446     httpd_MsgClean( &cl->answer );
1447     httpd_MsgClean( &cl->query );
1448
1449     free( cl->p_buffer );
1450     cl->p_buffer = NULL;
1451 }
1452
1453 static httpd_client_t *httpd_ClientNew( int fd, tls_session_t *p_tls, mtime_t now )
1454 {
1455     httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
1456
1457     if( !cl ) return NULL;
1458
1459     cl->i_ref   = 0;
1460     cl->fd      = fd;
1461     cl->url     = NULL;
1462     cl->p_tls = p_tls;
1463
1464     httpd_ClientInit( cl, now );
1465
1466     return cl;
1467 }
1468
1469 static
1470 ssize_t httpd_NetRecv (httpd_client_t *cl, uint8_t *p, size_t i_len)
1471 {
1472     tls_session_t *p_tls;
1473     ssize_t val;
1474
1475     p_tls = cl->p_tls;
1476     do
1477         val = p_tls ? tls_Recv (p_tls, p, i_len)
1478                     : recv (cl->fd, p, i_len, 0);
1479     while (val == -1 && errno == EINTR);
1480     return val;
1481 }
1482
1483 static
1484 ssize_t httpd_NetSend (httpd_client_t *cl, const uint8_t *p, size_t i_len)
1485 {
1486     tls_session_t *p_tls;
1487     ssize_t val;
1488
1489     p_tls = cl->p_tls;
1490     do
1491         val = p_tls ? tls_Send( p_tls, p, i_len )
1492                     : send (cl->fd, p, i_len, 0);
1493     while (val == -1 && errno == EINTR);
1494     return val;
1495 }
1496
1497
1498 static const struct
1499 {
1500     const char name[16];
1501     int  i_type;
1502     int  i_proto;
1503 }
1504 msg_type[] =
1505 {
1506     { "OPTIONS",       HTTPD_MSG_OPTIONS,      HTTPD_PROTO_RTSP },
1507     { "DESCRIBE",      HTTPD_MSG_DESCRIBE,     HTTPD_PROTO_RTSP },
1508     { "SETUP",         HTTPD_MSG_SETUP,        HTTPD_PROTO_RTSP },
1509     { "PLAY",          HTTPD_MSG_PLAY,         HTTPD_PROTO_RTSP },
1510     { "PAUSE",         HTTPD_MSG_PAUSE,        HTTPD_PROTO_RTSP },
1511     { "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
1512     { "TEARDOWN",      HTTPD_MSG_TEARDOWN,     HTTPD_PROTO_RTSP },
1513     { "GET",           HTTPD_MSG_GET,          HTTPD_PROTO_HTTP },
1514     { "HEAD",          HTTPD_MSG_HEAD,         HTTPD_PROTO_HTTP },
1515     { "POST",          HTTPD_MSG_POST,         HTTPD_PROTO_HTTP },
1516     { "",              HTTPD_MSG_NONE,         HTTPD_PROTO_NONE }
1517 };
1518
1519
1520 static void httpd_ClientRecv( httpd_client_t *cl )
1521 {
1522     int i_len;
1523
1524     /* ignore leading whites */
1525     if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
1526         ( cl->i_buffer == 0 ) )
1527     {
1528         unsigned char c;
1529
1530         i_len = httpd_NetRecv( cl, &c, 1 );
1531
1532         if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
1533         {
1534             cl->p_buffer[0] = c;
1535             cl->i_buffer++;
1536         }
1537     }
1538     else
1539     if( cl->query.i_proto == HTTPD_PROTO_NONE )
1540     {
1541         /* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
1542         i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
1543                                7 - cl->i_buffer );
1544         if( i_len > 0 )
1545         {
1546             cl->i_buffer += i_len;
1547         }
1548
1549         if( ( cl->i_buffer >= 4 ) && ( cl->p_buffer[0] == '$' ) )
1550         {
1551             /* Interleaved RTP over RTSP */
1552             cl->query.i_proto = HTTPD_PROTO_RTSP;
1553             cl->query.i_type  = HTTPD_MSG_CHANNEL;
1554             cl->query.i_channel = cl->p_buffer[1];
1555             cl->query.i_body  = (cl->p_buffer[2] << 8)|cl->p_buffer[3];
1556             cl->query.p_body  = malloc( cl->query.i_body );
1557             cl->i_buffer      -= 4;
1558             memcpy( cl->query.p_body, cl->p_buffer + 4, cl->i_buffer );
1559         }
1560         else
1561         /* The smallest legal request is 7 bytes ("GET /\r\n"),
1562          * this is the maximum we can ask at this point. */
1563         if( cl->i_buffer >= 7 )
1564         {
1565             if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
1566             {
1567                 cl->query.i_proto = HTTPD_PROTO_HTTP;
1568                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1569             }
1570             else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
1571             {
1572                 cl->query.i_proto = HTTPD_PROTO_RTSP;
1573                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1574             }
1575             else
1576             {
1577                 /* We need the full request line to determine the protocol. */
1578                 cl->query.i_proto = HTTPD_PROTO_HTTP0;
1579                 cl->query.i_type  = HTTPD_MSG_NONE;
1580             }
1581         }
1582     }
1583     else if( cl->query.i_body > 0 )
1584     {
1585         /* we are reading the body of a request or a channel */
1586         i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
1587                                cl->query.i_body - cl->i_buffer );
1588         if( i_len > 0 )
1589         {
1590             cl->i_buffer += i_len;
1591         }
1592         if( cl->i_buffer >= cl->query.i_body )
1593         {
1594             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1595         }
1596     }
1597     else
1598     {
1599         /* we are reading a header -> char by char */
1600         for( ;; )
1601         {
1602             if( cl->i_buffer == cl->i_buffer_size )
1603             {
1604                 uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
1605                 if( newbuf == NULL )
1606                 {
1607                     i_len = 0;
1608                     break;
1609                 }
1610
1611                 cl->p_buffer = newbuf;
1612                 cl->i_buffer_size += 1024;
1613             }
1614
1615             i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
1616             if( i_len <= 0 )
1617             {
1618                 break;
1619             }
1620             cl->i_buffer++;
1621
1622             if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
1623              && ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
1624             {
1625                 /* Request line is now complete */
1626                 const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
1627                 size_t len;
1628
1629                 assert( cl->query.i_type == HTTPD_MSG_NONE );
1630
1631                 if( p == NULL ) /* no URI: evil guy */
1632                 {
1633                     i_len = 0; /* drop connection */
1634                     break;
1635                 }
1636
1637                 do
1638                     p++; /* skips extra spaces */
1639                 while( *p == ' ' );
1640
1641                 p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
1642                 if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
1643                 {
1644                     i_len = 0; /* not supported currently -> drop */
1645                     break;
1646                 }
1647
1648                 do
1649                     p++; /* skips extra spaces ever again */
1650                 while( *p == ' ' );
1651
1652                 len = ((char *)cl->p_buffer) + cl->i_buffer - p;
1653                 if( len < 7 ) /* foreign protocol */
1654                     i_len = 0; /* I don't understand -> drop */
1655                 else
1656                 if( memcmp( p, "HTTP/1.", 7 ) == 0 )
1657                 {
1658                     cl->query.i_proto = HTTPD_PROTO_HTTP;
1659                     cl->query.i_version = atoi( p + 7 );
1660                 }
1661                 else
1662                 if( memcmp( p, "RTSP/1.", 7 ) == 0 )
1663                 {
1664                     cl->query.i_proto = HTTPD_PROTO_RTSP;
1665                     cl->query.i_version = atoi( p + 7 );
1666                 }
1667                 else
1668                 if( memcmp( p, "HTTP/", 5 ) == 0 )
1669                 {
1670                     const uint8_t sorry[] =
1671                        "HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
1672                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1673                     i_len = 0; /* drop */
1674                 }
1675                 else
1676                 if( memcmp( p, "RTSP/", 5 ) == 0 )
1677                 {
1678                     const uint8_t sorry[] =
1679                         "RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
1680                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1681                     i_len = 0; /* drop */
1682                 }
1683                 else /* yet another foreign protocol */
1684                     i_len = 0;
1685
1686                 if( i_len == 0 )
1687                     break;
1688             }
1689
1690             if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
1691                 ( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
1692             {
1693                 char *p;
1694
1695                 /* we have finished the header so parse it and set i_body */
1696                 cl->p_buffer[cl->i_buffer] = '\0';
1697
1698                 if( cl->query.i_type == HTTPD_MSG_ANSWER )
1699                 {
1700                     /* FIXME:
1701                      * assume strlen( "HTTP/1.x" ) = 8
1702                      */
1703                     cl->query.i_status =
1704                         strtol( (char *)&cl->p_buffer[8],
1705                                 &p, 0 );
1706                     while( *p == ' ' )
1707                         p++;
1708                 }
1709                 else
1710                 {
1711                     unsigned i;
1712
1713                     p = NULL;
1714                     cl->query.i_type = HTTPD_MSG_NONE;
1715
1716                     /*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
1717
1718                     for( i = 0; msg_type[i].name[0]; i++ )
1719                     {
1720                         if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
1721                                       strlen( msg_type[i].name ) ) )
1722                         {
1723                             p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
1724                             cl->query.i_type = msg_type[i].i_type;
1725                             if( cl->query.i_proto != msg_type[i].i_proto )
1726                             {
1727                                 p = NULL;
1728                                 cl->query.i_proto = HTTPD_PROTO_NONE;
1729                                 cl->query.i_type = HTTPD_MSG_NONE;
1730                             }
1731                             break;
1732                         }
1733                     }
1734                     if( p == NULL )
1735                     {
1736                         if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
1737                         {
1738                             cl->query.i_proto = HTTPD_PROTO_HTTP;
1739                         }
1740                         else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
1741                         {
1742                             cl->query.i_proto = HTTPD_PROTO_RTSP;
1743                         }
1744                     }
1745                     else
1746                     {
1747                         char *p2;
1748                         char *p3;
1749
1750                         while( *p == ' ' )
1751                         {
1752                             p++;
1753                         }
1754                         p2 = strchr( p, ' ' );
1755                         if( p2 )
1756                         {
1757                             *p2++ = '\0';
1758                         }
1759                         if( !strncasecmp( p, ( cl->query.i_proto
1760                                    == HTTPD_PROTO_HTTP ) ? "http" : "rtsp", 4 )
1761                          && p[4 + !!strchr( "sS", p[4] )] == ':' )
1762                         {   /* Skip hier-part of URL (if present) */
1763                             p = strchr( p, ':' ) + 1; /* skip URI scheme */
1764                             if( !strncmp( p, "//", 2 ) ) /* skip authority */
1765                             {   /* see RFC3986 §3.2 */
1766                                 p += 2;
1767                                 while( *p && !strchr( "/?#", *p ) ) p++;
1768                             }
1769                         }
1770                         cl->query.psz_url = strdup( p );
1771                         if( ( p3 = strchr( cl->query.psz_url, '?' ) )  )
1772                         {
1773                             *p3++ = '\0';
1774                             cl->query.psz_args = (uint8_t *)strdup( p3 );
1775                         }
1776                         p = p2;
1777                     }
1778                 }
1779                 if( p )
1780                 {
1781                     p = strchr( p, '\n' );
1782                 }
1783                 if( p )
1784                 {
1785                     while( *p == '\n' || *p == '\r' )
1786                     {
1787                         p++;
1788                     }
1789                     while( p && *p != '\0' )
1790                     {
1791                         char *line = p;
1792                         char *eol = p = strchr( p, '\n' );
1793                         char *colon;
1794
1795                         while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
1796                         {
1797                             *eol-- = '\0';
1798                         }
1799
1800                         if( ( colon = strchr( line, ':' ) ) )
1801                         {
1802                             char *name;
1803                             char *value;
1804
1805                             *colon++ = '\0';
1806                             while( *colon == ' ' )
1807                             {
1808                                 colon++;
1809                             }
1810                             name = strdup( line );
1811                             value = strdup( colon );
1812
1813                             TAB_APPEND( cl->query.i_name, cl->query.name, name );
1814                             TAB_APPEND( cl->query.i_value,cl->query.value,value);
1815
1816                             if( !strcasecmp( name, "Content-Length" ) )
1817                             {
1818                                 cl->query.i_body = atol( value );
1819                             }
1820                         }
1821
1822                         if( p )
1823                         {
1824                             p++;
1825                             while( *p == '\n' || *p == '\r' )
1826                             {
1827                                 p++;
1828                             }
1829                         }
1830                     }
1831                 }
1832                 if( cl->query.i_body > 0 )
1833                 {
1834                     /* TODO Mhh, handle the case client will only send a
1835                      * request and close the connection
1836                      * to mark and of body (probably only RTSP) */
1837                     cl->query.p_body = malloc( cl->query.i_body );
1838                     cl->i_buffer = 0;
1839                 }
1840                 else
1841                 {
1842                     cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1843                 }
1844             }
1845         }
1846     }
1847
1848     /* check if the client is to be set to dead */
1849 #if defined( WIN32 ) || defined( UNDER_CE )
1850     if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1851 #else
1852     if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1853 #endif
1854     {
1855         if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
1856         {
1857             /* connection closed -> end of data */
1858             if( cl->query.i_body > 0 )
1859             {
1860                 cl->query.i_body = cl->i_buffer;
1861             }
1862             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1863         }
1864         else
1865         {
1866             cl->i_state = HTTPD_CLIENT_DEAD;
1867         }
1868     }
1869
1870     /* XXX: for QT I have to disable timeout. Try to find why */
1871     if( cl->query.i_proto == HTTPD_PROTO_RTSP )
1872         cl->i_activity_timeout = 0;
1873
1874 #if 0 /* Debugging only */
1875     if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
1876     {
1877         int i;
1878
1879         fprintf( stderr, "received new request\n" );
1880         fprintf( stderr, "  - proto=%s\n",
1881                  cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
1882         fprintf( stderr, "  - version=%d\n", cl->query.i_version );
1883         fprintf( stderr, "  - msg=%d\n", cl->query.i_type );
1884         if( cl->query.i_type == HTTPD_MSG_ANSWER )
1885         {
1886             fprintf( stderr, "  - answer=%d '%s'\n", cl->query.i_status,
1887                      cl->query.psz_status );
1888         }
1889         else if( cl->query.i_type != HTTPD_MSG_NONE )
1890         {
1891             fprintf( stderr, "  - url=%s\n", cl->query.psz_url );
1892         }
1893         for( i = 0; i < cl->query.i_name; i++ )
1894         {
1895             fprintf( stderr, "  - option name='%s' value='%s'\n",
1896                      cl->query.name[i], cl->query.value[i] );
1897         }
1898     }
1899 #endif
1900 }
1901
1902 static void httpd_ClientSend( httpd_client_t *cl )
1903 {
1904     int i;
1905     int i_len;
1906
1907     if( cl->i_buffer < 0 )
1908     {
1909         /* We need to create the header */
1910         int i_size = 0;
1911         char *p;
1912         const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
1913
1914         i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
1915         for( i = 0; i < cl->answer.i_name; i++ )
1916         {
1917             i_size += strlen( cl->answer.name[i] ) + 2 +
1918                       strlen( cl->answer.value[i] ) + 2;
1919         }
1920
1921         if( cl->i_buffer_size < i_size )
1922         {
1923             cl->i_buffer_size = i_size;
1924             free( cl->p_buffer );
1925             cl->p_buffer = malloc( i_size );
1926         }
1927         p = (char *)cl->p_buffer;
1928
1929         p += sprintf( p, "%s.%u %d %s\r\n",
1930                       cl->answer.i_proto ==  HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
1931                       cl->answer.i_version,
1932                       cl->answer.i_status, psz_status );
1933         for( i = 0; i < cl->answer.i_name; i++ )
1934         {
1935             p += sprintf( p, "%s: %s\r\n", cl->answer.name[i],
1936                           cl->answer.value[i] );
1937         }
1938         p += sprintf( p, "\r\n" );
1939
1940         cl->i_buffer = 0;
1941         cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
1942
1943         /*fprintf( stderr, "sending answer\n" );
1944         fprintf( stderr, "%s",  cl->p_buffer );*/
1945     }
1946
1947     i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
1948                            cl->i_buffer_size - cl->i_buffer );
1949     if( i_len >= 0 )
1950     {
1951         cl->i_buffer += i_len;
1952
1953         if( cl->i_buffer >= cl->i_buffer_size )
1954         {
1955             if( cl->answer.i_body == 0  && cl->answer.i_body_offset > 0 &&
1956                 !cl->b_read_waiting )
1957             {
1958                 /* catch more body data */
1959                 int     i_msg = cl->query.i_type;
1960                 int64_t i_offset = cl->answer.i_body_offset;
1961
1962                 httpd_MsgClean( &cl->answer );
1963                 cl->answer.i_body_offset = i_offset;
1964
1965                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
1966                                           &cl->answer, &cl->query );
1967             }
1968
1969             if( cl->answer.i_body > 0 )
1970             {
1971                 /* send the body data */
1972                 free( cl->p_buffer );
1973                 cl->p_buffer = cl->answer.p_body;
1974                 cl->i_buffer_size = cl->answer.i_body;
1975                 cl->i_buffer = 0;
1976
1977                 cl->answer.i_body = 0;
1978                 cl->answer.p_body = NULL;
1979             }
1980             else
1981             {
1982                 /* send finished */
1983                 cl->i_state = HTTPD_CLIENT_SEND_DONE;
1984             }
1985         }
1986     }
1987     else
1988     {
1989 #if defined( WIN32 ) || defined( UNDER_CE )
1990         if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1991 #else
1992         if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1993 #endif
1994         {
1995             /* error */
1996             cl->i_state = HTTPD_CLIENT_DEAD;
1997         }
1998     }
1999 }
2000
2001 static void httpd_ClientTlsHsIn( httpd_client_t *cl )
2002 {
2003     switch( tls_SessionContinueHandshake( cl->p_tls ) )
2004     {
2005         case 0:
2006             cl->i_state = HTTPD_CLIENT_RECEIVING;
2007             break;
2008
2009         case -1:
2010             cl->i_state = HTTPD_CLIENT_DEAD;
2011             cl->p_tls = NULL;
2012             break;
2013
2014         case 2:
2015             cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
2016     }
2017 }
2018
2019 static void httpd_ClientTlsHsOut( httpd_client_t *cl )
2020 {
2021     switch( tls_SessionContinueHandshake( cl->p_tls ) )
2022     {
2023         case 0:
2024             cl->i_state = HTTPD_CLIENT_RECEIVING;
2025             break;
2026
2027         case -1:
2028             cl->i_state = HTTPD_CLIENT_DEAD;
2029             cl->p_tls = NULL;
2030             break;
2031
2032         case 1:
2033             cl->i_state = HTTPD_CLIENT_TLS_HS_IN;
2034             break;
2035     }
2036 }
2037
2038 static void* httpd_HostThread( void *data )
2039 {
2040     httpd_host_t *host = data;
2041     tls_session_t *p_tls = NULL;
2042     counter_t *p_total_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2043     counter_t *p_active_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2044     int evfd = vlc_object_waitpipe( VLC_OBJECT( host ) );
2045
2046     for( ;; )
2047     {
2048         /* prepare a new TLS session */
2049         if( ( p_tls == NULL ) && ( host->p_tls != NULL ) )
2050             p_tls = tls_ServerSessionPrepare( host->p_tls );
2051
2052         struct pollfd ufd[host->nfd + host->i_client + 1];
2053         unsigned nfd;
2054         for( nfd = 0; nfd < host->nfd; nfd++ )
2055         {
2056             ufd[nfd].fd = host->fds[nfd];
2057             ufd[nfd].events = POLLIN;
2058             ufd[nfd].revents = 0;
2059         }
2060
2061         /* add all socket that should be read/write and close dead connection */
2062         vlc_mutex_lock( &host->lock );
2063         while( host->i_url <= 0 && host->i_ref > 0 )
2064             vlc_cond_wait( &host->wait, &host->lock );
2065
2066         mtime_t now = mdate();
2067         bool b_low_delay = false;
2068
2069         for(int i_client = 0; i_client < host->i_client; i_client++ )
2070         {
2071             httpd_client_t *cl = host->client[i_client];
2072             if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
2073                 ( cl->i_state == HTTPD_CLIENT_DEAD ||
2074                   ( cl->i_activity_timeout > 0 &&
2075                     cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
2076             {
2077                 httpd_ClientClean( cl );
2078                 stats_UpdateInteger( host, p_active_counter, -1, NULL );
2079                 TAB_REMOVE( host->i_client, host->client, cl );
2080                 free( cl );
2081                 i_client--;
2082                 continue;
2083             }
2084
2085             struct pollfd *pufd = ufd + nfd;
2086             assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
2087
2088             pufd->fd = cl->fd;
2089             pufd->events = pufd->revents = 0;
2090
2091             if( ( cl->i_state == HTTPD_CLIENT_RECEIVING )
2092                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_IN ) )
2093             {
2094                 pufd->events = POLLIN;
2095             }
2096             else if( ( cl->i_state == HTTPD_CLIENT_SENDING )
2097                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT ) )
2098             {
2099                 pufd->events = POLLOUT;
2100             }
2101             else if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
2102             {
2103                 httpd_message_t *answer = &cl->answer;
2104                 httpd_message_t *query  = &cl->query;
2105                 int i_msg = query->i_type;
2106
2107                 httpd_MsgInit( answer );
2108
2109                 /* Handle what we received */
2110                 if( (cl->i_mode != HTTPD_CLIENT_BIDIR) &&
2111                     (i_msg == HTTPD_MSG_ANSWER || i_msg == HTTPD_MSG_CHANNEL) )
2112                 {
2113                     /* we can only receive request from client when not
2114                      * in BIDIR mode */
2115                     cl->url     = NULL;
2116                     cl->i_state = HTTPD_CLIENT_DEAD;
2117                 }
2118                 else if( i_msg == HTTPD_MSG_ANSWER )
2119                 {
2120                     /* We are in BIDIR mode, trigger the callback and then
2121                      * check for new data */
2122                     if( cl->url && cl->url->catch[i_msg].cb )
2123                     {
2124                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2125                                                   cl, NULL, query );
2126                     }
2127                     cl->i_state = HTTPD_CLIENT_WAITING;
2128                 }
2129                 else if( i_msg == HTTPD_MSG_CHANNEL )
2130                 {
2131                     /* We are in BIDIR mode, trigger the callback and then
2132                      * check for new data */
2133                     if( cl->url && cl->url->catch[i_msg].cb )
2134                     {
2135                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2136                                                   cl, NULL, query );
2137                     }
2138                     cl->i_state = HTTPD_CLIENT_WAITING;
2139                 }
2140                 else if( i_msg == HTTPD_MSG_OPTIONS )
2141                 {
2142
2143                     answer->i_type   = HTTPD_MSG_ANSWER;
2144                     answer->i_proto  = query->i_proto;
2145                     answer->i_status = 200;
2146                     answer->i_body = 0;
2147                     answer->p_body = NULL;
2148
2149                     httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
2150                     httpd_MsgAdd( answer, "Content-Length", "0" );
2151
2152                     switch( query->i_proto )
2153                     {
2154                         case HTTPD_PROTO_HTTP:
2155                             answer->i_version = 1;
2156                             httpd_MsgAdd( answer, "Allow",
2157                                           "GET,HEAD,POST,OPTIONS" );
2158                             break;
2159
2160                         case HTTPD_PROTO_RTSP:
2161                         {
2162                             const char *p;
2163                             answer->i_version = 0;
2164
2165                             p = httpd_MsgGet( query, "Cseq" );
2166                             if( p != NULL )
2167                                 httpd_MsgAdd( answer, "Cseq", "%s", p );
2168                             p = httpd_MsgGet( query, "Timestamp" );
2169                             if( p != NULL )
2170                                 httpd_MsgAdd( answer, "Timestamp", "%s", p );
2171
2172                             p = httpd_MsgGet( query, "Require" );
2173                             if( p != NULL )
2174                             {
2175                                 answer->i_status = 551;
2176                                 httpd_MsgAdd( query, "Unsupported", "%s", p );
2177                             }
2178
2179                             httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
2180                                           "TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
2181                             break;
2182                         }
2183                     }
2184
2185                     cl->i_buffer = -1;  /* Force the creation of the answer in
2186                                          * httpd_ClientSend */
2187                     cl->i_state = HTTPD_CLIENT_SENDING;
2188                 }
2189                 else if( i_msg == HTTPD_MSG_NONE )
2190                 {
2191                     if( query->i_proto == HTTPD_PROTO_NONE )
2192                     {
2193                         cl->url = NULL;
2194                         cl->i_state = HTTPD_CLIENT_DEAD;
2195                     }
2196                     else
2197                     {
2198                         char *p;
2199
2200                         /* unimplemented */
2201                         answer->i_proto  = query->i_proto ;
2202                         answer->i_type   = HTTPD_MSG_ANSWER;
2203                         answer->i_version= 0;
2204                         answer->i_status = 501;
2205
2206                         answer->i_body = httpd_HtmlError (&p, 501, NULL);
2207                         answer->p_body = (uint8_t *)p;
2208                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2209
2210                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2211                         cl->i_state = HTTPD_CLIENT_SENDING;
2212                     }
2213                 }
2214                 else
2215                 {
2216                     bool b_auth_failed = false;
2217                     bool b_hosts_failed = false;
2218
2219                     /* Search the url and trigger callbacks */
2220                     for(int i = 0; i < host->i_url; i++ )
2221                     {
2222                         httpd_url_t *url = host->url[i];
2223
2224                         if( !strcmp( url->psz_url, query->psz_url ) )
2225                         {
2226                             if( url->catch[i_msg].cb )
2227                             {
2228                                 if( answer && ( url->p_acl != NULL ) )
2229                                 {
2230                                     char ip[NI_MAXNUMERICHOST];
2231
2232                                     if( ( httpd_ClientIP( cl, ip ) == NULL )
2233                                      || ACL_Check( url->p_acl, ip ) )
2234                                     {
2235                                         b_hosts_failed = true;
2236                                         break;
2237                                     }
2238                                 }
2239
2240                                 if( answer && ( *url->psz_user || *url->psz_password ) )
2241                                 {
2242                                     /* create the headers */
2243                                     const char *b64 = httpd_MsgGet( query, "Authorization" ); /* BASIC id */
2244                                     char *user = NULL, *pass = NULL;
2245
2246                                     if( b64 != NULL
2247                                      && !strncasecmp( b64, "BASIC", 5 ) )
2248                                     {
2249                                         b64 += 5;
2250                                         while( *b64 == ' ' )
2251                                             b64++;
2252
2253                                         user = vlc_b64_decode( b64 );
2254                                         if (user != NULL)
2255                                         {
2256                                             pass = strchr (user, ':');
2257                                             if (pass != NULL)
2258                                                 *pass++ = '\0';
2259                                         }
2260                                     }
2261
2262                                     if ((user == NULL) || (pass == NULL)
2263                                      || strcmp (user, url->psz_user)
2264                                      || strcmp (pass, url->psz_password))
2265                                     {
2266                                         httpd_MsgAdd( answer,
2267                                                       "WWW-Authenticate",
2268                                                       "Basic realm=\"%s\"",
2269                                                       url->psz_user );
2270                                         /* We fail for all url */
2271                                         b_auth_failed = true;
2272                                         free( user );
2273                                         break;
2274                                     }
2275
2276                                     free( user );
2277                                 }
2278
2279                                 if( !url->catch[i_msg].cb( url->catch[i_msg].p_sys, cl, answer, query ) )
2280                                 {
2281                                     if( answer->i_proto == HTTPD_PROTO_NONE )
2282                                     {
2283                                         /* Raw answer from a CGI */
2284                                         cl->i_buffer = cl->i_buffer_size;
2285                                     }
2286                                     else
2287                                         cl->i_buffer = -1;
2288
2289                                     /* only one url can answer */
2290                                     answer = NULL;
2291                                     if( cl->url == NULL )
2292                                     {
2293                                         cl->url = url;
2294                                     }
2295                                 }
2296                             }
2297                         }
2298                     }
2299
2300                     if( answer )
2301                     {
2302                         char *p;
2303
2304                         answer->i_proto  = query->i_proto;
2305                         answer->i_type   = HTTPD_MSG_ANSWER;
2306                         answer->i_version= 0;
2307
2308                         if( b_hosts_failed )
2309                         {
2310                             answer->i_status = 403;
2311                         }
2312                         else if( b_auth_failed )
2313                         {
2314                             answer->i_status = 401;
2315                         }
2316                         else
2317                         {
2318                             /* no url registered */
2319                             answer->i_status = 404;
2320                         }
2321
2322                         answer->i_body = httpd_HtmlError (&p,
2323                                                           answer->i_status,
2324                                                           query->psz_url);
2325                         answer->p_body = (uint8_t *)p;
2326
2327                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2328                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2329                         httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
2330                     }
2331
2332                     cl->i_state = HTTPD_CLIENT_SENDING;
2333                 }
2334             }
2335             else if( cl->i_state == HTTPD_CLIENT_SEND_DONE )
2336             {
2337                 if( cl->i_mode == HTTPD_CLIENT_FILE || cl->answer.i_body_offset == 0 )
2338                 {
2339                     const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
2340                     const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
2341                     bool b_connection = false;
2342                     bool b_keepalive = false;
2343                     bool b_query = false;
2344
2345                     cl->url = NULL;
2346                     if( psz_connection )
2347                     {
2348                         b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
2349                         b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
2350                     }
2351
2352                     if( psz_query )
2353                     {
2354                         b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
2355                     }
2356
2357                     if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
2358                           ( ( cl->query.i_version == 0 && b_keepalive ) ||
2359                             ( cl->query.i_version == 1 && !b_connection ) ) ) ||
2360                         ( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
2361                           !b_query && !b_connection ) )
2362                     {
2363                         httpd_MsgClean( &cl->query );
2364                         httpd_MsgInit( &cl->query );
2365
2366                         cl->i_buffer = 0;
2367                         cl->i_buffer_size = 1000;
2368                         free( cl->p_buffer );
2369                         cl->p_buffer = malloc( cl->i_buffer_size );
2370                         cl->i_state = HTTPD_CLIENT_RECEIVING;
2371                     }
2372                     else
2373                     {
2374                         cl->i_state = HTTPD_CLIENT_DEAD;
2375                     }
2376                     httpd_MsgClean( &cl->answer );
2377                 }
2378                 else if( cl->b_read_waiting )
2379                 {
2380                     /* we have a message waiting for us to read it */
2381                     httpd_MsgClean( &cl->answer );
2382                     httpd_MsgClean( &cl->query );
2383
2384                     cl->i_buffer = 0;
2385                     cl->i_buffer_size = 1000;
2386                     free( cl->p_buffer );
2387                     cl->p_buffer = malloc( cl->i_buffer_size );
2388                     cl->i_state = HTTPD_CLIENT_RECEIVING;
2389                     cl->b_read_waiting = false;
2390                 }
2391                 else
2392                 {
2393                     int64_t i_offset = cl->answer.i_body_offset;
2394                     httpd_MsgClean( &cl->answer );
2395
2396                     cl->answer.i_body_offset = i_offset;
2397                     free( cl->p_buffer );
2398                     cl->p_buffer = NULL;
2399                     cl->i_buffer = 0;
2400                     cl->i_buffer_size = 0;
2401
2402                     cl->i_state = HTTPD_CLIENT_WAITING;
2403                 }
2404             }
2405             else if( cl->i_state == HTTPD_CLIENT_WAITING )
2406             {
2407                 int64_t i_offset = cl->answer.i_body_offset;
2408                 int     i_msg = cl->query.i_type;
2409
2410                 httpd_MsgInit( &cl->answer );
2411                 cl->answer.i_body_offset = i_offset;
2412
2413                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
2414                                           &cl->answer, &cl->query );
2415                 if( cl->answer.i_type != HTTPD_MSG_NONE )
2416                 {
2417                     /* we have new data, so re-enter send mode */
2418                     cl->i_buffer      = 0;
2419                     cl->p_buffer      = cl->answer.p_body;
2420                     cl->i_buffer_size = cl->answer.i_body;
2421                     cl->answer.p_body = NULL;
2422                     cl->answer.i_body = 0;
2423                     cl->i_state = HTTPD_CLIENT_SENDING;
2424                 }
2425             }
2426
2427             /* Special for BIDIR mode we also check reading */
2428             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2429                 cl->i_state == HTTPD_CLIENT_SENDING )
2430             {
2431                 pufd->events |= POLLIN;
2432             }
2433
2434             if (pufd->events != 0)
2435                 nfd++;
2436             else
2437                 b_low_delay = true;
2438         }
2439         vlc_mutex_unlock( &host->lock );
2440
2441         ufd[nfd].fd = evfd;
2442         ufd[nfd].events = POLLIN;
2443         ufd[nfd].revents = 0;
2444         nfd++;
2445
2446         /* we will wait 20ms (not too big) if HTTPD_CLIENT_WAITING */
2447         switch( poll( ufd, nfd, b_low_delay ? 20 : -1) )
2448         {
2449             case -1:
2450                 if (errno != EINTR)
2451                 {
2452                     /* Kernel on low memory or a bug: pace */
2453                     msg_Err( host, "polling error: %m" );
2454                     msleep( 100000 );
2455                 }
2456             case 0:
2457                 continue;
2458         }
2459
2460         if( ufd[nfd - 1].revents )
2461             break;
2462
2463         /* Handle client sockets */
2464         vlc_mutex_lock( &host->lock );
2465         now = mdate();
2466         nfd = host->nfd;
2467         for( int i_client = 0; i_client < host->i_client; i_client++ )
2468         {
2469             httpd_client_t *cl = host->client[i_client];
2470             const struct pollfd *pufd = &ufd[nfd];
2471
2472             assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
2473
2474             if( cl->fd != pufd->fd )
2475                 continue; // we were not waiting for this client
2476             ++nfd;
2477             if( pufd->revents == 0 )
2478                 continue; // no event received
2479
2480             cl->i_activity_date = now;
2481
2482             if( cl->i_state == HTTPD_CLIENT_RECEIVING )
2483             {
2484                 httpd_ClientRecv( cl );
2485             }
2486             else if( cl->i_state == HTTPD_CLIENT_SENDING )
2487             {
2488                 httpd_ClientSend( cl );
2489             }
2490             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_IN )
2491             {
2492                 httpd_ClientTlsHsIn( cl );
2493             }
2494             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT )
2495             {
2496                 httpd_ClientTlsHsOut( cl );
2497             }
2498
2499             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2500                 cl->i_state == HTTPD_CLIENT_SENDING &&
2501                 (pufd->revents & POLLIN) )
2502             {
2503                 cl->b_read_waiting = true;
2504             }
2505         }
2506         vlc_mutex_unlock( &host->lock );
2507
2508         /* Handle server sockets (accept new connections) */
2509         for( nfd = 0; nfd < host->nfd; nfd++ )
2510         {
2511             httpd_client_t *cl;
2512             int i_state = -1;
2513             int fd = ufd[nfd].fd;
2514
2515             assert (fd == host->fds[nfd]);
2516
2517             if( ufd[nfd].revents == 0 )
2518                 continue;
2519
2520             /* */
2521             fd = accept (fd, NULL, NULL);
2522             if (fd == -1)
2523                 continue;
2524
2525             net_SetupSocket (fd);
2526             if( p_tls != NULL )
2527             {
2528                 switch( tls_ServerSessionHandshake( p_tls, fd ) )
2529                 {
2530                     case -1:
2531                         msg_Err( host, "Rejecting TLS connection" );
2532                         net_Close( fd );
2533                         fd = -1;
2534                         p_tls = NULL;
2535                         break;
2536
2537                     case 1: /* missing input - most likely */
2538                         i_state = HTTPD_CLIENT_TLS_HS_IN;
2539                         break;
2540
2541                     case 2: /* missing output */
2542                         i_state = HTTPD_CLIENT_TLS_HS_OUT;
2543                         break;
2544                 }
2545
2546                 if( (p_tls == NULL) != (host->p_tls == NULL) )
2547                     break; // wasted TLS session, cannot accept() anymore
2548             }
2549
2550             stats_UpdateInteger( host, p_total_counter, 1, NULL );
2551             stats_UpdateInteger( host, p_active_counter, 1, NULL );
2552             cl = httpd_ClientNew( fd, p_tls, now );
2553             p_tls = NULL;
2554             vlc_mutex_lock( &host->lock );
2555             TAB_APPEND( host->i_client, host->client, cl );
2556             vlc_mutex_unlock( &host->lock );
2557             if( i_state != -1 )
2558                 cl->i_state = i_state; // override state for TLS
2559
2560             if (host->p_tls != NULL)
2561                 break; // cannot accept further without new TLS session
2562         }
2563
2564     }
2565
2566     if( p_tls != NULL )
2567         tls_ServerSessionClose( p_tls );
2568     if( p_total_counter )
2569         stats_CounterClean( p_total_counter );
2570     if( p_active_counter )
2571         stats_CounterClean( p_active_counter );
2572     return NULL;
2573 }