git.sesse.net Git - vlc/blob - 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 <vlc_rand.h>
  40 #include <vlc_charset.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_POLL
  51 # include <poll.h>
  52 #endif
  53
  54 #if defined( UNDER_CE )
  55 #   include <winsock.h>
  56 #elif defined( WIN32 )
  57 #   include <winsock2.h>
  58 #else
  59 #   include <sys/socket.h>
  60 #endif
  61
  62 #if defined( WIN32 )
  63 /* We need HUGE buffer otherwise TCP throughput is very limited */
  64 #define HTTPD_CL_BUFSIZE 1000000
  65 #else
  66 #define HTTPD_CL_BUFSIZE 10000
  67 #endif
  68
  69 static void httpd_ClientClean( httpd_client_t *cl );
  70
  71 /* each host run in his own thread */
  72 struct httpd_host_t
  73 {
  74     VLC_COMMON_MEMBERS
  75
  76     /* ref count */
  77     unsigned    i_ref;
  78
  79     /* address/port and socket for listening at connections */
  80     int         *fds;
  81     unsigned     nfd;
  82     unsigned     port;
  83
  84     vlc_thread_t thread;
  85     vlc_mutex_t lock;
  86     vlc_cond_t  wait;
  87
  88     /* all registered url (becarefull that 2 httpd_url_t could point at the same url)
  89      * This will slow down the url research but make my live easier
  90      * All url will have their cb trigger, but only the first one can answer
  91      * */
  92     int         i_url;
  93     httpd_url_t **url;
  94
  95     int            i_client;
  96     httpd_client_t **client;
  97
  98     /* TLS data */
  99     vlc_tls_creds_t *p_tls;
 100 };
 101
 102
 103 struct httpd_url_t
 104 {
 105     httpd_host_t *host;
 106
 107     vlc_mutex_t lock;
 108
 109     char      *psz_url;
 110     char      *psz_user;
 111     char      *psz_password;
 112     vlc_acl_t *p_acl;
 113
 114     struct
 115     {
 116         httpd_callback_t     cb;
 117         httpd_callback_sys_t *p_sys;
 118     } catch[HTTPD_MSG_MAX];
 119 };
 120
 121 /* status */
 122 enum
 123 {
 124     HTTPD_CLIENT_RECEIVING,
 125     HTTPD_CLIENT_RECEIVE_DONE,
 126
 127     HTTPD_CLIENT_SENDING,
 128     HTTPD_CLIENT_SEND_DONE,
 129
 130     HTTPD_CLIENT_WAITING,
 131
 132     HTTPD_CLIENT_DEAD,
 133
 134     HTTPD_CLIENT_TLS_HS_IN,
 135     HTTPD_CLIENT_TLS_HS_OUT
 136 };
 137
 138 /* mode */
 139 enum
 140 {
 141     HTTPD_CLIENT_FILE,      /* default */
 142     HTTPD_CLIENT_STREAM,    /* regulary get data from cb */
 143 };
 144
 145 struct httpd_client_t
 146 {
 147     httpd_url_t *url;
 148
 149     int     i_ref;
 150
 151     int     fd;
 152
 153     bool    b_stream_mode;
 154     uint8_t i_state;
 155
 156     mtime_t i_activity_date;
 157     mtime_t i_activity_timeout;
 158
 159     /* buffer for reading header */
 160     int     i_buffer_size;
 161     int     i_buffer;
 162     uint8_t *p_buffer;
 163
 164     /* */
 165     httpd_message_t query;  /* client -> httpd */
 166     httpd_message_t answer; /* httpd -> client */
 167
 168     /* TLS data */
 169     vlc_tls_t *p_tls;
 170 };
 171
 172
 173 /*****************************************************************************
 174  * Various functions
 175  *****************************************************************************/
 176 static const struct
 177 {
 178     const char psz_ext[8];
 179     const char *psz_mime;
 180 } http_mime[] =
 181 {
 182     { ".htm",   "text/html" },
 183     { ".html",  "text/html" },
 184     { ".txt",   "text/plain" },
 185     { ".xml",   "text/xml" },
 186     { ".dtd",   "text/dtd" },
 187
 188     { ".css",   "text/css" },
 189
 190     /* image mime */
 191     { ".gif",   "image/gif" },
 192     { ".jpe",   "image/jpeg" },
 193     { ".jpg",   "image/jpeg" },
 194     { ".jpeg",  "image/jpeg" },
 195     { ".png",   "image/png" },
 196     /* same as modules/mux/mpjpeg.c here: */
 197     { ".mpjpeg","multipart/x-mixed-replace; boundary=7b3cc56e5f51db803f790dad720ed50a" },
 198
 199     /* media mime */
 200     { ".avi",   "video/avi" },
 201     { ".asf",   "video/x-ms-asf" },
 202     { ".m1a",   "audio/mpeg" },
 203     { ".m2a",   "audio/mpeg" },
 204     { ".m1v",   "video/mpeg" },
 205     { ".m2v",   "video/mpeg" },
 206     { ".mp2",   "audio/mpeg" },
 207     { ".mp3",   "audio/mpeg" },
 208     { ".mpa",   "audio/mpeg" },
 209     { ".mpg",   "video/mpeg" },
 210     { ".mpeg",  "video/mpeg" },
 211     { ".mpe",   "video/mpeg" },
 212     { ".mov",   "video/quicktime" },
 213     { ".moov",  "video/quicktime" },
 214     { ".oga",   "audio/ogg" },
 215     { ".ogg",   "application/ogg" },
 216     { ".ogm",   "application/ogg" },
 217     { ".ogv",   "video/ogg" },
 218     { ".ogx",   "application/ogg" },
 219     { ".spx",   "audio/ogg" },
 220     { ".wav",   "audio/wav" },
 221     { ".wma",   "audio/x-ms-wma" },
 222     { ".wmv",   "video/x-ms-wmv" },
 223
 224
 225     /* end */
 226     { "",       "" }
 227 };
 228
 229 static const char *httpd_MimeFromUrl( const char *psz_url )
 230 {
 231
 232     char *psz_ext;
 233
 234     psz_ext = strrchr( psz_url, '.' );
 235     if( psz_ext )
 236     {
 237         int i;
 238
 239         for( i = 0; http_mime[i].psz_ext[0] ; i++ )
 240         {
 241             if( !strcasecmp( http_mime[i].psz_ext, psz_ext ) )
 242             {
 243                 return http_mime[i].psz_mime;
 244             }
 245         }
 246     }
 247     return "application/octet-stream";
 248 }
 249
 250
 251 typedef struct
 252 {
 253     unsigned   i_code;
 254     const char psz_reason[36];
 255 } http_status_info;
 256
 257 static const http_status_info http_reason[] =
 258 {
 259   /*{ 100, "Continue" },
 260     { 101, "Switching Protocols" },*/
 261     { 200, "OK" },
 262   /*{ 201, "Created" },
 263     { 202, "Accepted" },
 264     { 203, "Non-authoritative information" },
 265     { 204, "No content" },
 266     { 205, "Reset content" },
 267     { 206, "Partial content" },
 268     { 250, "Low on storage space" },
 269     { 300, "Multiple choices" },*/
 270     { 301, "Moved permanently" },
 271   /*{ 302, "Moved temporarily" },
 272     { 303, "See other" },
 273     { 304, "Not modified" },
 274     { 305, "Use proxy" },
 275     { 307, "Temporary redirect" },
 276     { 400, "Bad request" },*/
 277     { 401, "Unauthorized" },
 278   /*{ 402, "Payment Required" },*/
 279     { 403, "Forbidden" },
 280     { 404, "Not found" },
 281     { 405, "Method not allowed" },
 282   /*{ 406, "Not acceptable" },
 283     { 407, "Proxy authentication required" },
 284     { 408, "Request time-out" },
 285     { 409, "Conflict" },
 286     { 410, "Gone" },
 287     { 411, "Length required" },
 288     { 412, "Precondition failed" },
 289     { 413, "Request entity too large" },
 290     { 414, "Request-URI too large" },
 291     { 415, "Unsupported media Type" },
 292     { 416, "Requested range not satisfiable" },
 293     { 417, "Expectation failed" },
 294     { 451, "Parameter not understood" },
 295     { 452, "Conference not found" },
 296     { 453, "Not enough bandwidth" },*/
 297     { 454, "Session not found" },
 298     { 455, "Method not valid in this State" },
 299     { 456, "Header field not valid for resource" },
 300     { 457, "Invalid range" },
 301   /*{ 458, "Read-only parameter" },*/
 302     { 459, "Aggregate operation not allowed" },
 303     { 460, "Non-aggregate operation not allowed" },
 304     { 461, "Unsupported transport" },
 305   /*{ 462, "Destination unreachable" },*/
 306     { 500, "Internal server error" },
 307     { 501, "Not implemented" },
 308   /*{ 502, "Bad gateway" },*/
 309     { 503, "Service unavailable" },
 310   /*{ 504, "Gateway time-out" },*/
 311     { 505, "Protocol version not supported" },
 312     { 551, "Option not supported" },
 313     { 999, "" }
 314 };
 315
 316 static const char psz_fallback_reason[5][16] =
 317 { "Continue", "OK", "Found", "Client error", "Server error" };
 318
 319 static const char *httpd_ReasonFromCode( unsigned i_code )
 320 {
 321     const http_status_info *p;
 322
 323     assert( ( i_code >= 100 ) && ( i_code <= 599 ) );
 324
 325     for (p = http_reason; i_code > p->i_code; p++);
 326
 327     if( p->i_code == i_code )
 328         return p->psz_reason;
 329
 330     return psz_fallback_reason[(i_code / 100) - 1];
 331 }
 332
 333
 334 static size_t httpd_HtmlError (char **body, int code, const char *url)
 335 {
 336     const char *errname = httpd_ReasonFromCode (code);
 337     assert (errname != NULL);
 338
 339     int res = asprintf (body,
 340         "<?xml version=\"1.0\" encoding=\"ascii\" ?>\n"
 341         "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
 342         " \"http://www.w3.org/TR/xhtml10/DTD/xhtml10strict.dtd\">\n"
 343         "<html lang=\"en\">\n"
 344         "<head>\n"
 345         "<title>%s</title>\n"
 346         "</head>\n"
 347         "<body>\n"
 348         "<h1>%d %s%s%s%s</h1>\n"
 349         "<hr />\n"
 350         "<a href=\"http://www.videolan.org\">VideoLAN</a>\n"
 351         "</body>\n"
 352         "</html>\n", errname, code, errname,
 353         (url ? " (" : ""), (url ? url : ""), (url ? ")" : ""));
 354
 355     if (res == -1)
 356     {
 357         *body = NULL;
 358         return 0;
 359     }
 360
 361     return (size_t)res;
 362 }
 363
 364
 365 /*****************************************************************************
 366  * High Level Functions: httpd_file_t
 367  *****************************************************************************/
 368 struct httpd_file_t
 369 {
 370     httpd_url_t *url;
 371
 372     char *psz_url;
 373     char *psz_mime;
 374
 375     httpd_file_callback_t pf_fill;
 376     httpd_file_sys_t      *p_sys;
 377
 378 };
 379
 380 static int
 381 httpd_FileCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
 382                     httpd_message_t *answer, const httpd_message_t *query )
 383 {
 384     httpd_file_t *file = (httpd_file_t*)p_sys;
 385     uint8_t **pp_body, *p_body;
 386     const char *psz_connection;
 387     int *pi_body, i_body;
 388
 389     if( answer == NULL || query == NULL )
 390     {
 391         return VLC_SUCCESS;
 392     }
 393     answer->i_proto  = HTTPD_PROTO_HTTP;
 394     answer->i_version= 1;
 395     answer->i_type   = HTTPD_MSG_ANSWER;
 396
 397     answer->i_status = 200;
 398
 399     httpd_MsgAdd( answer, "Content-type",  "%s", file->psz_mime );
 400     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 401
 402     if( query->i_type != HTTPD_MSG_HEAD )
 403     {
 404         pp_body = &answer->p_body;
 405         pi_body = &answer->i_body;
 406     }
 407     else
 408     {
 409         /* The file still needs to be executed. */
 410         p_body = NULL;
 411         i_body = 0;
 412         pp_body = &p_body;
 413         pi_body = &i_body;
 414     }
 415
 416     if( query->i_type == HTTPD_MSG_POST )
 417     {
 418         /* msg_Warn not supported */
 419     }
 420
 421     uint8_t *psz_args = query->psz_args;
 422     file->pf_fill( file->p_sys, file, psz_args, pp_body, pi_body );
 423
 424     if( query->i_type == HTTPD_MSG_HEAD && p_body != NULL )
 425     {
 426         free( p_body );
 427     }
 428
 429     /* We respect client request */
 430     psz_connection = httpd_MsgGet( &cl->query, "Connection" );
 431     if( psz_connection != NULL )
 432     {
 433         httpd_MsgAdd( answer, "Connection", "%s", psz_connection );
 434     }
 435
 436     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
 437
 438     return VLC_SUCCESS;
 439 }
 440
 441 httpd_file_t *httpd_FileNew( httpd_host_t *host,
 442                              const char *psz_url, const char *psz_mime,
 443                              const char *psz_user, const char *psz_password,
 444                              const vlc_acl_t *p_acl, httpd_file_callback_t pf_fill,
 445                              httpd_file_sys_t *p_sys )
 446 {
 447     httpd_file_t *file = xmalloc( sizeof( httpd_file_t ) );
 448
 449     if( ( file->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 450                                           psz_password, p_acl )
 451         ) == NULL )
 452     {
 453         free( file );
 454         return NULL;
 455     }
 456
 457     file->psz_url  = strdup( psz_url );
 458     if( psz_mime && *psz_mime )
 459     {
 460         file->psz_mime = strdup( psz_mime );
 461     }
 462     else
 463     {
 464         file->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
 465     }
 466
 467     file->pf_fill = pf_fill;
 468     file->p_sys   = p_sys;
 469
 470     httpd_UrlCatch( file->url, HTTPD_MSG_HEAD, httpd_FileCallBack,
 471                     (httpd_callback_sys_t*)file );
 472     httpd_UrlCatch( file->url, HTTPD_MSG_GET,  httpd_FileCallBack,
 473                     (httpd_callback_sys_t*)file );
 474     httpd_UrlCatch( file->url, HTTPD_MSG_POST, httpd_FileCallBack,
 475                     (httpd_callback_sys_t*)file );
 476
 477     return file;
 478 }
 479
 480 httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
 481 {
 482     httpd_file_sys_t *p_sys = file->p_sys;
 483
 484     httpd_UrlDelete( file->url );
 485
 486     free( file->psz_url );
 487     free( file->psz_mime );
 488
 489     free( file );
 490
 491     return p_sys;
 492 }
 493
 494 /*****************************************************************************
 495  * High Level Functions: httpd_handler_t (for CGIs)
 496  *****************************************************************************/
 497 struct httpd_handler_t
 498 {
 499     httpd_url_t *url;
 500
 501     httpd_handler_callback_t pf_fill;
 502     httpd_handler_sys_t      *p_sys;
 503
 504 };
 505
 506 static int
 507 httpd_HandlerCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
 508                        httpd_message_t *answer, const httpd_message_t *query )
 509 {
 510     httpd_handler_t *handler = (httpd_handler_t*)p_sys;
 511     char psz_remote_addr[NI_MAXNUMERICHOST];
 512
 513     if( answer == NULL || query == NULL )
 514     {
 515         return VLC_SUCCESS;
 516     }
 517     answer->i_proto  = HTTPD_PROTO_NONE;
 518     answer->i_type   = HTTPD_MSG_ANSWER;
 519
 520     /* We do it ourselves, thanks */
 521     answer->i_status = 0;
 522
 523     if( httpd_ClientIP( cl, psz_remote_addr, NULL ) == NULL )
 524         *psz_remote_addr = '\0';
 525
 526     uint8_t *psz_args = query->psz_args;
 527     handler->pf_fill( handler->p_sys, handler, query->psz_url, psz_args,
 528                       query->i_type, query->p_body, query->i_body,
 529                       psz_remote_addr, NULL,
 530                       &answer->p_body, &answer->i_body );
 531
 532     if( query->i_type == HTTPD_MSG_HEAD )
 533     {
 534         char *p = (char *)answer->p_body;
 535
 536         /* Looks for end of header (i.e. one empty line) */
 537         while ( (p = strchr( p, '\r' )) != NULL )
 538         {
 539             if( p[1] && p[1] == '\n' && p[2] && p[2] == '\r'
 540                  && p[3] && p[3] == '\n' )
 541             {
 542                 break;
 543             }
 544         }
 545
 546         if( p != NULL )
 547         {
 548             p[4] = '\0';
 549             answer->i_body = strlen((char*)answer->p_body) + 1;
 550             answer->p_body = xrealloc( answer->p_body, answer->i_body );
 551         }
 552     }
 553
 554     if( strncmp( (char *)answer->p_body, "HTTP/1.", 7 ) )
 555     {
 556         int i_status, i_headers;
 557         char *psz_headers, *psz_new;
 558         const char *psz_status;
 559
 560         if( !strncmp( (char *)answer->p_body, "Status: ", 8 ) )
 561         {
 562             /* Apache-style */
 563             i_status = strtol( (char *)&answer->p_body[8], &psz_headers, 0 );
 564             if( *psz_headers == '\r' || *psz_headers == '\n' ) psz_headers++;
 565             if( *psz_headers == '\n' ) psz_headers++;
 566             i_headers = answer->i_body - (psz_headers - (char *)answer->p_body);
 567         }
 568         else
 569         {
 570             i_status = 200;
 571             psz_headers = (char *)answer->p_body;
 572             i_headers = answer->i_body;
 573         }
 574
 575         psz_status = httpd_ReasonFromCode( i_status );
 576         answer->i_body = sizeof("HTTP/1.0 xxx \r\n")
 577                         + strlen(psz_status) + i_headers - 1;
 578         psz_new = (char *)xmalloc( answer->i_body + 1);
 579         sprintf( psz_new, "HTTP/1.0 %03d %s\r\n", i_status, psz_status );
 580         memcpy( &psz_new[strlen(psz_new)], psz_headers, i_headers );
 581         free( answer->p_body );
 582         answer->p_body = (uint8_t *)psz_new;
 583     }
 584
 585     return VLC_SUCCESS;
 586 }
 587
 588 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
 589                                    const char *psz_user,
 590                                    const char *psz_password,
 591                                    const vlc_acl_t *p_acl,
 592                                    httpd_handler_callback_t pf_fill,
 593                                    httpd_handler_sys_t *p_sys )
 594 {
 595     httpd_handler_t *handler = xmalloc( sizeof( httpd_handler_t ) );
 596
 597     if( ( handler->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 598                                              psz_password, p_acl )
 599         ) == NULL )
 600     {
 601         free( handler );
 602         return NULL;
 603     }
 604
 605     handler->pf_fill = pf_fill;
 606     handler->p_sys   = p_sys;
 607
 608     httpd_UrlCatch( handler->url, HTTPD_MSG_HEAD, httpd_HandlerCallBack,
 609                     (httpd_callback_sys_t*)handler );
 610     httpd_UrlCatch( handler->url, HTTPD_MSG_GET,  httpd_HandlerCallBack,
 611                     (httpd_callback_sys_t*)handler );
 612     httpd_UrlCatch( handler->url, HTTPD_MSG_POST, httpd_HandlerCallBack,
 613                     (httpd_callback_sys_t*)handler );
 614
 615     return handler;
 616 }
 617
 618 httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
 619 {
 620     httpd_handler_sys_t *p_sys = handler->p_sys;
 621     httpd_UrlDelete( handler->url );
 622     free( handler );
 623     return p_sys;
 624 }
 625
 626 /*****************************************************************************
 627  * High Level Functions: httpd_redirect_t
 628  *****************************************************************************/
 629 struct httpd_redirect_t
 630 {
 631     httpd_url_t *url;
 632     char        *psz_dst;
 633 };
 634
 635 static int httpd_RedirectCallBack( httpd_callback_sys_t *p_sys,
 636                                    httpd_client_t *cl, httpd_message_t *answer,
 637                                    const httpd_message_t *query )
 638 {
 639     httpd_redirect_t *rdir = (httpd_redirect_t*)p_sys;
 640     char *p_body;
 641     (void)cl;
 642
 643     if( answer == NULL || query == NULL )
 644     {
 645         return VLC_SUCCESS;
 646     }
 647     answer->i_proto  = HTTPD_PROTO_HTTP;
 648     answer->i_version= 1;
 649     answer->i_type   = HTTPD_MSG_ANSWER;
 650     answer->i_status = 301;
 651
 652     answer->i_body = httpd_HtmlError (&p_body, 301, rdir->psz_dst);
 653     answer->p_body = (unsigned char *)p_body;
 654
 655     /* XXX check if it's ok or we need to set an absolute url */
 656     httpd_MsgAdd( answer, "Location",  "%s", rdir->psz_dst );
 657
 658     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
 659
 660     return VLC_SUCCESS;
 661 }
 662
 663 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
 664                                      const char *psz_url_src )
 665 {
 666     httpd_redirect_t *rdir = xmalloc( sizeof( httpd_redirect_t ) );
 667
 668     if( !( rdir->url = httpd_UrlNewUnique( host, psz_url_src, NULL, NULL, NULL ) ) )
 669     {
 670         free( rdir );
 671         return NULL;
 672     }
 673     rdir->psz_dst = strdup( psz_url_dst );
 674
 675     /* Redirect apply for all HTTP request and RTSP DESCRIBE resquest */
 676     httpd_UrlCatch( rdir->url, HTTPD_MSG_HEAD, httpd_RedirectCallBack,
 677                     (httpd_callback_sys_t*)rdir );
 678     httpd_UrlCatch( rdir->url, HTTPD_MSG_GET, httpd_RedirectCallBack,
 679                     (httpd_callback_sys_t*)rdir );
 680     httpd_UrlCatch( rdir->url, HTTPD_MSG_POST, httpd_RedirectCallBack,
 681                     (httpd_callback_sys_t*)rdir );
 682     httpd_UrlCatch( rdir->url, HTTPD_MSG_DESCRIBE, httpd_RedirectCallBack,
 683                     (httpd_callback_sys_t*)rdir );
 684
 685     return rdir;
 686 }
 687 void httpd_RedirectDelete( httpd_redirect_t *rdir )
 688 {
 689     httpd_UrlDelete( rdir->url );
 690     free( rdir->psz_dst );
 691     free( rdir );
 692 }
 693
 694 /*****************************************************************************
 695  * High Level Funtions: httpd_stream_t
 696  *****************************************************************************/
 697 struct httpd_stream_t
 698 {
 699     vlc_mutex_t lock;
 700     httpd_url_t *url;
 701
 702     char    *psz_mime;
 703
 704     /* Header to send as first packet */
 705     uint8_t *p_header;
 706     int     i_header;
 707
 708     /* circular buffer */
 709     int         i_buffer_size;      /* buffer size, can't be reallocated smaller */
 710     uint8_t     *p_buffer;          /* buffer */
 711     int64_t     i_buffer_pos;       /* absolute position from begining */
 712     int64_t     i_buffer_last_pos;  /* a new connection will start with that */
 713 };
 714
 715 static int httpd_StreamCallBack( httpd_callback_sys_t *p_sys,
 716                                  httpd_client_t *cl, httpd_message_t *answer,
 717                                  const httpd_message_t *query )
 718 {
 719     httpd_stream_t *stream = (httpd_stream_t*)p_sys;
 720
 721     if( answer == NULL || query == NULL || cl == NULL )
 722     {
 723         return VLC_SUCCESS;
 724     }
 725
 726     if( answer->i_body_offset > 0 )
 727     {
 728         int64_t i_write;
 729         int     i_pos;
 730
 731 #if 0
 732         fprintf( stderr, "httpd_StreamCallBack i_body_offset=%lld\n",
 733                  answer->i_body_offset );
 734 #endif
 735
 736         if( answer->i_body_offset >= stream->i_buffer_pos )
 737         {
 738             /* fprintf( stderr, "httpd_StreamCallBack: no data\n" ); */
 739             return VLC_EGENERIC;    /* wait, no data available */
 740         }
 741         if( answer->i_body_offset + stream->i_buffer_size <
 742             stream->i_buffer_pos )
 743         {
 744             /* this client isn't fast enough */
 745 #if 0
 746             fprintf( stderr, "fixing i_body_offset (old=%lld new=%lld)\n",
 747                      answer->i_body_offset, stream->i_buffer_last_pos );
 748 #endif
 749             answer->i_body_offset = stream->i_buffer_last_pos;
 750         }
 751
 752         i_pos   = answer->i_body_offset % stream->i_buffer_size;
 753         i_write = stream->i_buffer_pos - answer->i_body_offset;
 754         if( i_write > HTTPD_CL_BUFSIZE )
 755         {
 756             i_write = HTTPD_CL_BUFSIZE;
 757         }
 758         else if( i_write <= 0 )
 759         {
 760             return VLC_EGENERIC;    /* wait, no data available */
 761         }
 762
 763         /* Don't go past the end of the circular buffer */
 764         i_write = __MIN( i_write, stream->i_buffer_size - i_pos );
 765
 766         /* using HTTPD_MSG_ANSWER -> data available */
 767         answer->i_proto  = HTTPD_PROTO_HTTP;
 768         answer->i_version= 0;
 769         answer->i_type   = HTTPD_MSG_ANSWER;
 770
 771         answer->i_body = i_write;
 772         answer->p_body = xmalloc( i_write );
 773         memcpy( answer->p_body, &stream->p_buffer[i_pos], i_write );
 774
 775         answer->i_body_offset += i_write;
 776
 777         return VLC_SUCCESS;
 778     }
 779     else
 780     {
 781         answer->i_proto  = HTTPD_PROTO_HTTP;
 782         answer->i_version= 0;
 783         answer->i_type   = HTTPD_MSG_ANSWER;
 784
 785         answer->i_status = 200;
 786
 787         if( query->i_type != HTTPD_MSG_HEAD )
 788         {
 789             cl->b_stream_mode = true;
 790             vlc_mutex_lock( &stream->lock );
 791             /* Send the header */
 792             if( stream->i_header > 0 )
 793             {
 794                 answer->i_body = stream->i_header;
 795                 answer->p_body = xmalloc( stream->i_header );
 796                 memcpy( answer->p_body, stream->p_header, stream->i_header );
 797             }
 798             answer->i_body_offset = stream->i_buffer_last_pos;
 799             vlc_mutex_unlock( &stream->lock );
 800         }
 801         else
 802         {
 803             httpd_MsgAdd( answer, "Content-Length", "%d", 0 );
 804             answer->i_body_offset = 0;
 805         }
 806
 807         if( !strcmp( stream->psz_mime, "video/x-ms-asf-stream" ) )
 808         {
 809             bool b_xplaystream = false;
 810             int i;
 811
 812             httpd_MsgAdd( answer, "Content-type", "%s",
 813                           "application/octet-stream" );
 814             httpd_MsgAdd( answer, "Server", "Cougar 4.1.0.3921" );
 815             httpd_MsgAdd( answer, "Pragma", "no-cache" );
 816             httpd_MsgAdd( answer, "Pragma", "client-id=%lu",
 817                           vlc_mrand48()&0x7fff );
 818             httpd_MsgAdd( answer, "Pragma", "features=\"broadcast\"" );
 819
 820             /* Check if there is a xPlayStrm=1 */
 821             for( i = 0; i < query->i_name; i++ )
 822             {
 823                 if( !strcasecmp( query->name[i],  "Pragma" ) &&
 824                     strstr( query->value[i], "xPlayStrm=1" ) )
 825                 {
 826                     b_xplaystream = true;
 827                 }
 828             }
 829
 830             if( !b_xplaystream )
 831             {
 832                 answer->i_body_offset = 0;
 833             }
 834         }
 835         else
 836         {
 837             httpd_MsgAdd( answer, "Content-type",  "%s", stream->psz_mime );
 838         }
 839         httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 840         return VLC_SUCCESS;
 841     }
 842 }
 843
 844 httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
 845                                  const char *psz_url, const char *psz_mime,
 846                                  const char *psz_user, const char *psz_password,
 847                                  const vlc_acl_t *p_acl )
 848 {
 849     httpd_stream_t *stream = xmalloc( sizeof( httpd_stream_t ) );
 850
 851     if( ( stream->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 852                                             psz_password, p_acl )
 853         ) == NULL )
 854     {
 855         free( stream );
 856         return NULL;
 857     }
 858     vlc_mutex_init( &stream->lock );
 859     if( psz_mime && *psz_mime )
 860     {
 861         stream->psz_mime = strdup( psz_mime );
 862     }
 863     else
 864     {
 865         stream->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
 866     }
 867     stream->i_header = 0;
 868     stream->p_header = NULL;
 869     stream->i_buffer_size = 5000000;    /* 5 Mo per stream */
 870     stream->p_buffer = xmalloc( stream->i_buffer_size );
 871     /* We set to 1 to make life simpler
 872      * (this way i_body_offset can never be 0) */
 873     stream->i_buffer_pos = 1;
 874     stream->i_buffer_last_pos = 1;
 875
 876     httpd_UrlCatch( stream->url, HTTPD_MSG_HEAD, httpd_StreamCallBack,
 877                     (httpd_callback_sys_t*)stream );
 878     httpd_UrlCatch( stream->url, HTTPD_MSG_GET, httpd_StreamCallBack,
 879                     (httpd_callback_sys_t*)stream );
 880     httpd_UrlCatch( stream->url, HTTPD_MSG_POST, httpd_StreamCallBack,
 881                     (httpd_callback_sys_t*)stream );
 882
 883     return stream;
 884 }
 885
 886 int httpd_StreamHeader( httpd_stream_t *stream, uint8_t *p_data, int i_data )
 887 {
 888     vlc_mutex_lock( &stream->lock );
 889     free( stream->p_header );
 890     stream->p_header = NULL;
 891
 892     stream->i_header = i_data;
 893     if( i_data > 0 )
 894     {
 895         stream->p_header = xmalloc( i_data );
 896         memcpy( stream->p_header, p_data, i_data );
 897     }
 898     vlc_mutex_unlock( &stream->lock );
 899
 900     return VLC_SUCCESS;
 901 }
 902
 903 int httpd_StreamSend( httpd_stream_t *stream, uint8_t *p_data, int i_data )
 904 {
 905     int i_count;
 906     int i_pos;
 907
 908     if( i_data < 0 || p_data == NULL )
 909     {
 910         return VLC_SUCCESS;
 911     }
 912     vlc_mutex_lock( &stream->lock );
 913
 914     /* save this pointer (to be used by new connection) */
 915     stream->i_buffer_last_pos = stream->i_buffer_pos;
 916
 917     i_pos = stream->i_buffer_pos % stream->i_buffer_size;
 918     i_count = i_data;
 919     while( i_count > 0)
 920     {
 921         int i_copy;
 922
 923         i_copy = __MIN( i_count, stream->i_buffer_size - i_pos );
 924
 925         /* Ok, we can't go past the end of our buffer */
 926         memcpy( &stream->p_buffer[i_pos], p_data, i_copy );
 927
 928         i_pos = ( i_pos + i_copy ) % stream->i_buffer_size;
 929         i_count -= i_copy;
 930         p_data  += i_copy;
 931     }
 932
 933     stream->i_buffer_pos += i_data;
 934
 935     vlc_mutex_unlock( &stream->lock );
 936     return VLC_SUCCESS;
 937 }
 938
 939 void httpd_StreamDelete( httpd_stream_t *stream )
 940 {
 941     httpd_UrlDelete( stream->url );
 942     vlc_mutex_destroy( &stream->lock );
 943     free( stream->psz_mime );
 944     free( stream->p_header );
 945     free( stream->p_buffer );
 946     free( stream );
 947 }
 948
 949 /*****************************************************************************
 950  * Low level
 951  *****************************************************************************/
 952 static void* httpd_HostThread( void * );
 953 static httpd_host_t *httpd_HostCreate( vlc_object_t *, const char *,
 954                                        const char *, vlc_tls_creds_t * );
 955
 956 /* create a new host */
 957 httpd_host_t *vlc_http_HostNew( vlc_object_t *p_this )
 958 {
 959     return httpd_HostCreate( p_this, "http-host", "http-port", NULL );
 960 }
 961
 962 httpd_host_t *vlc_https_HostNew( vlc_object_t *obj )
 963 {
 964     char *cert = var_InheritString( obj, "http-cert" );
 965     if( cert == NULL )
 966     {
 967         msg_Err( obj, "HTTP/TLS certificate not specified!" );
 968         return NULL;
 969     }
 970
 971     char *key = var_InheritString( obj, "http-key" );
 972     vlc_tls_creds_t *tls = vlc_tls_ServerCreate( obj, cert, key );
 973
 974     if( tls == NULL )
 975     {
 976         msg_Err( obj, "HTTP/TLS certificate error (%s and %s)",
 977                  cert, (key != NULL) ? key : cert );
 978         free( key );
 979         free( cert );
 980         return NULL;
 981     }
 982     free( key );
 983     free( cert );
 984
 985     char *ca = var_InheritString( obj, "http-ca" );
 986     if( ca != NULL )
 987     {
 988         if( vlc_tls_ServerAddCA( tls, ca ) )
 989         {
 990             msg_Err( obj, "HTTP/TLS CA error (%s)", ca );
 991             free( ca );
 992             goto error;
 993         }
 994         free( ca );
 995     }
 996
 997     char *crl = var_InheritString( obj, "http-crl" );
 998     if( crl != NULL )
 999     {
1000         if( vlc_tls_ServerAddCRL( tls, crl ) )
1001         {
1002             msg_Err( obj, "TLS CRL error (%s)", crl );
1003             free( crl );
1004             goto error;
1005         }
1006         free( crl );
1007     }
1008
1009     return httpd_HostCreate( obj, "http-host", "https-port", tls );
1010
1011 error:
1012     vlc_tls_ServerDelete( tls );
1013     return NULL;
1014 }
1015
1016 httpd_host_t *vlc_rtsp_HostNew( vlc_object_t *p_this )
1017 {
1018     return httpd_HostCreate( p_this, "rtsp-host", "rtsp-port", NULL );
1019 }
1020
1021 static struct httpd_t
1022 {
1023     vlc_mutex_t  mutex;
1024
1025     httpd_host_t **host;
1026     int          i_host;
1027 } httpd = { VLC_STATIC_MUTEX, NULL, 0 };
1028
1029 static httpd_host_t *httpd_HostCreate( vlc_object_t *p_this,
1030                                        const char *hostvar,
1031                                        const char *portvar,
1032                                        vlc_tls_creds_t *p_tls )
1033 {
1034     httpd_host_t *host;
1035     unsigned port = var_InheritInteger( p_this, portvar );
1036
1037     /* to be sure to avoid multiple creation */
1038     vlc_mutex_lock( &httpd.mutex );
1039
1040     /* verify if it already exist */
1041     for( int i = 0; i < httpd.i_host; i++ )
1042     {
1043         host = httpd.host[i];
1044
1045         /* cannot mix TLS and non-TLS hosts */
1046         if( host->port != port
1047          || (host->p_tls != NULL) != (p_tls != NULL) )
1048             continue;
1049
1050         /* Increase existing matching host reference count.
1051          * The reference count is written under both the global httpd and the
1052          * host lock. It is read with either or both locks held. The global
1053          * lock is always acquired first. */
1054         vlc_mutex_lock( &host->lock );
1055         host->i_ref++;
1056         vlc_mutex_unlock( &host->lock );
1057
1058         vlc_mutex_unlock( &httpd.mutex );
1059         if( p_tls != NULL )
1060             vlc_tls_ServerDelete( p_tls );
1061         return host;
1062     }
1063
1064     host = NULL;
1065
1066     /* create the new host */
1067     host = (httpd_host_t *)vlc_custom_create( p_this, sizeof (*host),
1068                                               "http host" );
1069     if (host == NULL)
1070         goto error;
1071
1072     vlc_mutex_init( &host->lock );
1073     vlc_cond_init( &host->wait );
1074     host->i_ref = 1;
1075
1076     char *hostname = var_InheritString( p_this, hostvar );
1077     host->fds = net_ListenTCP( p_this, hostname, port );
1078     free( hostname );
1079     if( host->fds == NULL )
1080     {
1081         msg_Err( p_this, "cannot create socket(s) for HTTP host" );
1082         goto error;
1083     }
1084     for (host->nfd = 0; host->fds[host->nfd] != -1; host->nfd++);
1085
1086     if( vlc_object_waitpipe( VLC_OBJECT( host ) ) == -1 )
1087     {
1088         msg_Err( host, "signaling pipe error: %m" );
1089         goto error;
1090     }
1091
1092     host->port     = port;
1093     host->i_url    = 0;
1094     host->url      = NULL;
1095     host->i_client = 0;
1096     host->client   = NULL;
1097     host->p_tls    = p_tls;
1098
1099     /* create the thread */
1100     if( vlc_clone( &host->thread, httpd_HostThread, host,
1101                    VLC_THREAD_PRIORITY_LOW ) )
1102     {
1103         msg_Err( p_this, "cannot spawn http host thread" );
1104         goto error;
1105     }
1106
1107     /* now add it to httpd */
1108     TAB_APPEND( httpd.i_host, httpd.host, host );
1109     vlc_mutex_unlock( &httpd.mutex );
1110
1111     return host;
1112
1113 error:
1114     vlc_mutex_unlock( &httpd.mutex );
1115
1116     if( host != NULL )
1117     {
1118         net_ListenClose( host->fds );
1119         vlc_cond_destroy( &host->wait );
1120         vlc_mutex_destroy( &host->lock );
1121         vlc_object_release( host );
1122     }
1123
1124     if( p_tls != NULL )
1125         vlc_tls_ServerDelete( p_tls );
1126
1127     return NULL;
1128 }
1129
1130 /* delete a host */
1131 void httpd_HostDelete( httpd_host_t *host )
1132 {
1133     int i;
1134     bool delete = false;
1135
1136     vlc_mutex_lock( &httpd.mutex );
1137
1138     vlc_mutex_lock( &host->lock );
1139     host->i_ref--;
1140     if( host->i_ref == 0 )
1141     {
1142         vlc_cond_signal( &host->wait );
1143         delete = true;
1144     }
1145     vlc_mutex_unlock( &host->lock );
1146     if( !delete )
1147     {
1148         /* still used */
1149         vlc_mutex_unlock( &httpd.mutex );
1150         msg_Dbg( host, "httpd_HostDelete: host still in use" );
1151         return;
1152     }
1153     TAB_REMOVE( httpd.i_host, httpd.host, host );
1154
1155     vlc_object_kill( host );
1156     vlc_join( host->thread, NULL );
1157
1158     msg_Dbg( host, "HTTP host removed" );
1159
1160     for( i = 0; i < host->i_url; i++ )
1161     {
1162         msg_Err( host, "url still registered: %s", host->url[i]->psz_url );
1163     }
1164     for( i = 0; i < host->i_client; i++ )
1165     {
1166         httpd_client_t *cl = host->client[i];
1167         msg_Warn( host, "client still connected" );
1168         httpd_ClientClean( cl );
1169         TAB_REMOVE( host->i_client, host->client, cl );
1170         free( cl );
1171         i--;
1172         /* TODO */
1173     }
1174
1175     if( host->p_tls != NULL)
1176         vlc_tls_ServerDelete( host->p_tls );
1177
1178     net_ListenClose( host->fds );
1179     vlc_cond_destroy( &host->wait );
1180     vlc_mutex_destroy( &host->lock );
1181     vlc_object_release( host );
1182     vlc_mutex_unlock( &httpd.mutex );
1183 }
1184
1185 /* register a new url */
1186 static httpd_url_t *httpd_UrlNewPrivate( httpd_host_t *host, const char *psz_url,
1187                                          const char *psz_user, const char *psz_password,
1188                                          const vlc_acl_t *p_acl, bool b_check )
1189 {
1190     httpd_url_t *url;
1191     int         i;
1192
1193     assert( psz_url != NULL );
1194
1195     vlc_mutex_lock( &host->lock );
1196     if( b_check )
1197     {
1198         for( i = 0; i < host->i_url; i++ )
1199         {
1200             if( !strcmp( psz_url, host->url[i]->psz_url ) )
1201             {
1202                 msg_Warn( host,
1203                           "cannot add '%s' (url already defined)", psz_url );
1204                 vlc_mutex_unlock( &host->lock );
1205                 return NULL;
1206             }
1207         }
1208     }
1209
1210     url = xmalloc( sizeof( httpd_url_t ) );
1211     url->host = host;
1212
1213     vlc_mutex_init( &url->lock );
1214     url->psz_url = strdup( psz_url );
1215     url->psz_user = strdup( psz_user ? psz_user : "" );
1216     url->psz_password = strdup( psz_password ? psz_password : "" );
1217     url->p_acl = ACL_Duplicate( host, p_acl );
1218     for( i = 0; i < HTTPD_MSG_MAX; i++ )
1219     {
1220         url->catch[i].cb = NULL;
1221         url->catch[i].p_sys = NULL;
1222     }
1223
1224     TAB_APPEND( host->i_url, host->url, url );
1225     vlc_cond_signal( &host->wait );
1226     vlc_mutex_unlock( &host->lock );
1227
1228     return url;
1229 }
1230
1231 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
1232                            const char *psz_user, const char *psz_password,
1233                            const vlc_acl_t *p_acl )
1234 {
1235     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1236                                 psz_password, p_acl, false );
1237 }
1238
1239 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
1240                                  const char *psz_user, const char *psz_password,
1241                                  const vlc_acl_t *p_acl )
1242 {
1243     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1244                                 psz_password, p_acl, true );
1245 }
1246
1247 /* register callback on a url */
1248 int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
1249                     httpd_callback_sys_t *p_sys )
1250 {
1251     vlc_mutex_lock( &url->lock );
1252     url->catch[i_msg].cb   = cb;
1253     url->catch[i_msg].p_sys= p_sys;
1254     vlc_mutex_unlock( &url->lock );
1255
1256     return VLC_SUCCESS;
1257 }
1258
1259 /* delete a url */
1260 void httpd_UrlDelete( httpd_url_t *url )
1261 {
1262     httpd_host_t *host = url->host;
1263     int          i;
1264
1265     vlc_mutex_lock( &host->lock );
1266     TAB_REMOVE( host->i_url, host->url, url );
1267
1268     vlc_mutex_destroy( &url->lock );
1269     free( url->psz_url );
1270     free( url->psz_user );
1271     free( url->psz_password );
1272     ACL_Destroy( url->p_acl );
1273
1274     for( i = 0; i < host->i_client; i++ )
1275     {
1276         httpd_client_t *client = host->client[i];
1277
1278         if( client->url == url )
1279         {
1280             /* TODO complete it */
1281             msg_Warn( host, "force closing connections" );
1282             httpd_ClientClean( client );
1283             TAB_REMOVE( host->i_client, host->client, client );
1284             free( client );
1285             i--;
1286         }
1287     }
1288     free( url );
1289     vlc_mutex_unlock( &host->lock );
1290 }
1291
1292 static void httpd_MsgInit( httpd_message_t *msg )
1293 {
1294     msg->cl         = NULL;
1295     msg->i_type     = HTTPD_MSG_NONE;
1296     msg->i_proto    = HTTPD_PROTO_NONE;
1297     msg->i_version  = -1; /* FIXME */
1298
1299     msg->i_status   = 0;
1300
1301     msg->psz_url    = NULL;
1302     msg->psz_args   = NULL;
1303
1304     msg->i_name     = 0;
1305     msg->name       = NULL;
1306     msg->i_value    = 0;
1307     msg->value      = NULL;
1308
1309     msg->i_body_offset = 0;
1310     msg->i_body        = 0;
1311     msg->p_body        = NULL;
1312 }
1313
1314 static void httpd_MsgClean( httpd_message_t *msg )
1315 {
1316     int i;
1317
1318     free( msg->psz_url );
1319     free( msg->psz_args );
1320     for( i = 0; i < msg->i_name; i++ )
1321     {
1322         free( msg->name[i] );
1323         free( msg->value[i] );
1324     }
1325     free( msg->name );
1326     free( msg->value );
1327     free( msg->p_body );
1328     httpd_MsgInit( msg );
1329 }
1330
1331 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
1332 {
1333     int i;
1334
1335     for( i = 0; i < msg->i_name; i++ )
1336     {
1337         if( !strcasecmp( msg->name[i], name ))
1338         {
1339             return msg->value[i];
1340         }
1341     }
1342     return NULL;
1343 }
1344
1345 void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
1346 {
1347     va_list args;
1348     char *value = NULL;
1349
1350     va_start( args, psz_value );
1351     if( us_vasprintf( &value, psz_value, args ) == -1 )
1352         value = NULL;
1353     va_end( args );
1354
1355     if( value == NULL )
1356         return;
1357
1358     name = strdup( name );
1359     if( name == NULL )
1360     {
1361         free( value );
1362         return;
1363     }
1364
1365     TAB_APPEND( msg->i_name,  msg->name,  (char*)name );
1366     TAB_APPEND( msg->i_value, msg->value, value );
1367 }
1368
1369 static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
1370 {
1371     cl->i_state = HTTPD_CLIENT_RECEIVING;
1372     cl->i_activity_date = now;
1373     cl->i_activity_timeout = INT64_C(10000000);
1374     cl->i_buffer_size = HTTPD_CL_BUFSIZE;
1375     cl->i_buffer = 0;
1376     cl->p_buffer = xmalloc( cl->i_buffer_size );
1377     cl->b_stream_mode = false;
1378
1379     httpd_MsgInit( &cl->query );
1380     httpd_MsgInit( &cl->answer );
1381 }
1382
1383 char* httpd_ClientIP( const httpd_client_t *cl, char *ip, int *port )
1384 {
1385     return net_GetPeerAddress( cl->fd, ip, port ) ? NULL : ip;
1386 }
1387
1388 char* httpd_ServerIP( const httpd_client_t *cl, char *ip, int *port )
1389 {
1390     return net_GetSockAddress( cl->fd, ip, port ) ? NULL : ip;
1391 }
1392
1393 static void httpd_ClientClean( httpd_client_t *cl )
1394 {
1395     if( cl->fd >= 0 )
1396     {
1397         if( cl->p_tls != NULL )
1398             vlc_tls_ServerSessionDelete( cl->p_tls );
1399         net_Close( cl->fd );
1400         cl->fd = -1;
1401     }
1402
1403     httpd_MsgClean( &cl->answer );
1404     httpd_MsgClean( &cl->query );
1405
1406     free( cl->p_buffer );
1407     cl->p_buffer = NULL;
1408 }
1409
1410 static httpd_client_t *httpd_ClientNew( int fd, vlc_tls_t *p_tls, mtime_t now )
1411 {
1412     httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
1413
1414     if( !cl ) return NULL;
1415
1416     cl->i_ref   = 0;
1417     cl->fd      = fd;
1418     cl->url     = NULL;
1419     cl->p_tls = p_tls;
1420
1421     httpd_ClientInit( cl, now );
1422
1423     return cl;
1424 }
1425
1426 static
1427 ssize_t httpd_NetRecv (httpd_client_t *cl, uint8_t *p, size_t i_len)
1428 {
1429     vlc_tls_t *p_tls;
1430     ssize_t val;
1431
1432     p_tls = cl->p_tls;
1433     do
1434         val = p_tls ? tls_Recv (p_tls, p, i_len)
1435                     : recv (cl->fd, p, i_len, 0);
1436     while (val == -1 && errno == EINTR);
1437     return val;
1438 }
1439
1440 static
1441 ssize_t httpd_NetSend (httpd_client_t *cl, const uint8_t *p, size_t i_len)
1442 {
1443     vlc_tls_t *p_tls;
1444     ssize_t val;
1445
1446     p_tls = cl->p_tls;
1447     do
1448         val = p_tls ? tls_Send( p_tls, p, i_len )
1449                     : send (cl->fd, p, i_len, 0);
1450     while (val == -1 && errno == EINTR);
1451     return val;
1452 }
1453
1454
1455 static const struct
1456 {
1457     const char name[16];
1458     int  i_type;
1459     int  i_proto;
1460 }
1461 msg_type[] =
1462 {
1463     { "OPTIONS",       HTTPD_MSG_OPTIONS,      HTTPD_PROTO_RTSP },
1464     { "DESCRIBE",      HTTPD_MSG_DESCRIBE,     HTTPD_PROTO_RTSP },
1465     { "SETUP",         HTTPD_MSG_SETUP,        HTTPD_PROTO_RTSP },
1466     { "PLAY",          HTTPD_MSG_PLAY,         HTTPD_PROTO_RTSP },
1467     { "PAUSE",         HTTPD_MSG_PAUSE,        HTTPD_PROTO_RTSP },
1468     { "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
1469     { "TEARDOWN",      HTTPD_MSG_TEARDOWN,     HTTPD_PROTO_RTSP },
1470     { "GET",           HTTPD_MSG_GET,          HTTPD_PROTO_HTTP },
1471     { "HEAD",          HTTPD_MSG_HEAD,         HTTPD_PROTO_HTTP },
1472     { "POST",          HTTPD_MSG_POST,         HTTPD_PROTO_HTTP },
1473     { "",              HTTPD_MSG_NONE,         HTTPD_PROTO_NONE }
1474 };
1475
1476
1477 static void httpd_ClientRecv( httpd_client_t *cl )
1478 {
1479     int i_len;
1480
1481     /* ignore leading whites */
1482     if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
1483         ( cl->i_buffer == 0 ) )
1484     {
1485         unsigned char c;
1486
1487         i_len = httpd_NetRecv( cl, &c, 1 );
1488
1489         if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
1490         {
1491             cl->p_buffer[0] = c;
1492             cl->i_buffer++;
1493         }
1494     }
1495     else
1496     if( cl->query.i_proto == HTTPD_PROTO_NONE )
1497     {
1498         /* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
1499         i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
1500                                7 - cl->i_buffer );
1501         if( i_len > 0 )
1502         {
1503             cl->i_buffer += i_len;
1504         }
1505
1506         /* The smallest legal request is 7 bytes ("GET /\r\n"),
1507          * this is the maximum we can ask at this point. */
1508         if( cl->i_buffer >= 7 )
1509         {
1510             if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
1511             {
1512                 cl->query.i_proto = HTTPD_PROTO_HTTP;
1513                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1514             }
1515             else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
1516             {
1517                 cl->query.i_proto = HTTPD_PROTO_RTSP;
1518                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1519             }
1520             else
1521             {
1522                 /* We need the full request line to determine the protocol. */
1523                 cl->query.i_proto = HTTPD_PROTO_HTTP0;
1524                 cl->query.i_type  = HTTPD_MSG_NONE;
1525             }
1526         }
1527     }
1528     else if( cl->query.i_body > 0 )
1529     {
1530         /* we are reading the body of a request or a channel */
1531         i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
1532                                cl->query.i_body - cl->i_buffer );
1533         if( i_len > 0 )
1534         {
1535             cl->i_buffer += i_len;
1536         }
1537         if( cl->i_buffer >= cl->query.i_body )
1538         {
1539             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1540         }
1541     }
1542     else
1543     {
1544         /* we are reading a header -> char by char */
1545         for( ;; )
1546         {
1547             if( cl->i_buffer == cl->i_buffer_size )
1548             {
1549                 uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
1550                 if( newbuf == NULL )
1551                 {
1552                     i_len = 0;
1553                     break;
1554                 }
1555
1556                 cl->p_buffer = newbuf;
1557                 cl->i_buffer_size += 1024;
1558             }
1559
1560             i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
1561             if( i_len <= 0 )
1562             {
1563                 break;
1564             }
1565             cl->i_buffer++;
1566
1567             if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
1568              && ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
1569             {
1570                 /* Request line is now complete */
1571                 const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
1572                 size_t len;
1573
1574                 assert( cl->query.i_type == HTTPD_MSG_NONE );
1575
1576                 if( p == NULL ) /* no URI: evil guy */
1577                 {
1578                     i_len = 0; /* drop connection */
1579                     break;
1580                 }
1581
1582                 do
1583                     p++; /* skips extra spaces */
1584                 while( *p == ' ' );
1585
1586                 p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
1587                 if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
1588                 {
1589                     i_len = 0; /* not supported currently -> drop */
1590                     break;
1591                 }
1592
1593                 do
1594                     p++; /* skips extra spaces ever again */
1595                 while( *p == ' ' );
1596
1597                 len = ((char *)cl->p_buffer) + cl->i_buffer - p;
1598                 if( len < 7 ) /* foreign protocol */
1599                     i_len = 0; /* I don't understand -> drop */
1600                 else
1601                 if( memcmp( p, "HTTP/1.", 7 ) == 0 )
1602                 {
1603                     cl->query.i_proto = HTTPD_PROTO_HTTP;
1604                     cl->query.i_version = atoi( p + 7 );
1605                 }
1606                 else
1607                 if( memcmp( p, "RTSP/1.", 7 ) == 0 )
1608                 {
1609                     cl->query.i_proto = HTTPD_PROTO_RTSP;
1610                     cl->query.i_version = atoi( p + 7 );
1611                 }
1612                 else
1613                 if( memcmp( p, "HTTP/", 5 ) == 0 )
1614                 {
1615                     const uint8_t sorry[] =
1616                        "HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
1617                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1618                     i_len = 0; /* drop */
1619                 }
1620                 else
1621                 if( memcmp( p, "RTSP/", 5 ) == 0 )
1622                 {
1623                     const uint8_t sorry[] =
1624                         "RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
1625                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1626                     i_len = 0; /* drop */
1627                 }
1628                 else /* yet another foreign protocol */
1629                     i_len = 0;
1630
1631                 if( i_len == 0 )
1632                     break;
1633             }
1634
1635             if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
1636                 ( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
1637             {
1638                 char *p;
1639
1640                 /* we have finished the header so parse it and set i_body */
1641                 cl->p_buffer[cl->i_buffer] = '\0';
1642
1643                 if( cl->query.i_type == HTTPD_MSG_ANSWER )
1644                 {
1645                     /* FIXME:
1646                      * assume strlen( "HTTP/1.x" ) = 8
1647                      */
1648                     cl->query.i_status =
1649                         strtol( (char *)&cl->p_buffer[8],
1650                                 &p, 0 );
1651                     while( *p == ' ' )
1652                         p++;
1653                 }
1654                 else
1655                 {
1656                     unsigned i;
1657
1658                     p = NULL;
1659                     cl->query.i_type = HTTPD_MSG_NONE;
1660
1661                     /*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
1662
1663                     for( i = 0; msg_type[i].name[0]; i++ )
1664                     {
1665                         if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
1666                                       strlen( msg_type[i].name ) ) )
1667                         {
1668                             p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
1669                             cl->query.i_type = msg_type[i].i_type;
1670                             if( cl->query.i_proto != msg_type[i].i_proto )
1671                             {
1672                                 p = NULL;
1673                                 cl->query.i_proto = HTTPD_PROTO_NONE;
1674                                 cl->query.i_type = HTTPD_MSG_NONE;
1675                             }
1676                             break;
1677                         }
1678                     }
1679                     if( p == NULL )
1680                     {
1681                         if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
1682                         {
1683                             cl->query.i_proto = HTTPD_PROTO_HTTP;
1684                         }
1685                         else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
1686                         {
1687                             cl->query.i_proto = HTTPD_PROTO_RTSP;
1688                         }
1689                     }
1690                     else
1691                     {
1692                         char *p2;
1693                         char *p3;
1694
1695                         while( *p == ' ' )
1696                         {
1697                             p++;
1698                         }
1699                         p2 = strchr( p, ' ' );
1700                         if( p2 )
1701                         {
1702                             *p2++ = '\0';
1703                         }
1704                         if( !strncasecmp( p, ( cl->query.i_proto
1705                              == HTTPD_PROTO_HTTP ) ? "http:" : "rtsp:", 5 ) )
1706                         {   /* Skip hier-part of URL (if present) */
1707                             p += 5;
1708                             if( !strncmp( p, "//", 2 ) ) /* skip authority */
1709                             {   /* see RFC3986 §3.2 */
1710                                 p += 2;
1711                                 p += strcspn( p, "/?#" );
1712                             }
1713                         }
1714                         else
1715                         if( !strncasecmp( p, ( cl->query.i_proto
1716                              == HTTPD_PROTO_HTTP ) ? "https:" : "rtsps:", 6 ) )
1717                         {   /* Skip hier-part of URL (if present) */
1718                             p += 6;
1719                             if( !strncmp( p, "//", 2 ) ) /* skip authority */
1720                             {   /* see RFC3986 §3.2 */
1721                                 p += 2;
1722                                 p += strcspn( p, "/?#" );
1723                             }
1724                         }
1725
1726                         cl->query.psz_url = strdup( p );
1727                         if( ( p3 = strchr( cl->query.psz_url, '?' ) )  )
1728                         {
1729                             *p3++ = '\0';
1730                             cl->query.psz_args = (uint8_t *)strdup( p3 );
1731                         }
1732                         p = p2;
1733                     }
1734                 }
1735                 if( p )
1736                 {
1737                     p = strchr( p, '\n' );
1738                 }
1739                 if( p )
1740                 {
1741                     while( *p == '\n' || *p == '\r' )
1742                     {
1743                         p++;
1744                     }
1745                     while( p && *p != '\0' )
1746                     {
1747                         char *line = p;
1748                         char *eol = p = strchr( p, '\n' );
1749                         char *colon;
1750
1751                         while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
1752                         {
1753                             *eol-- = '\0';
1754                         }
1755
1756                         if( ( colon = strchr( line, ':' ) ) )
1757                         {
1758                             char *name;
1759                             char *value;
1760
1761                             *colon++ = '\0';
1762                             while( *colon == ' ' )
1763                             {
1764                                 colon++;
1765                             }
1766                             name = strdup( line );
1767                             value = strdup( colon );
1768
1769                             TAB_APPEND( cl->query.i_name, cl->query.name, name );
1770                             TAB_APPEND( cl->query.i_value,cl->query.value,value);
1771
1772                             if( !strcasecmp( name, "Content-Length" ) )
1773                             {
1774                                 cl->query.i_body = atol( value );
1775                             }
1776                         }
1777
1778                         if( p )
1779                         {
1780                             p++;
1781                             while( *p == '\n' || *p == '\r' )
1782                             {
1783                                 p++;
1784                             }
1785                         }
1786                     }
1787                 }
1788                 if( cl->query.i_body > 0 )
1789                 {
1790                     /* TODO Mhh, handle the case where the client only
1791                      * sends a request and closes the connection to
1792                      * mark the end of the body (probably only RTSP) */
1793                     cl->query.p_body = malloc( cl->query.i_body );
1794                     cl->i_buffer = 0;
1795                     if ( cl->query.p_body == NULL )
1796                     {
1797                         switch (cl->query.i_proto)
1798                         {
1799                             case HTTPD_PROTO_HTTP:
1800                             {
1801                                 const uint8_t sorry[] =
1802                             "HTTP/1.1 413 Request Entity Too Large\r\n\r\n";
1803                                 httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1804                                 break;
1805                             }
1806                             case HTTPD_PROTO_RTSP:
1807                             {
1808                                 const uint8_t sorry[] =
1809                             "RTSP/1.0 413 Request Entity Too Large\r\n\r\n";
1810                                 httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1811                                 break;
1812                             }
1813                             default:
1814                                 assert( 0 );
1815                         }
1816                         i_len = 0; /* drop */
1817                     }
1818                     break;
1819                 }
1820                 else
1821                 {
1822                     cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1823                 }
1824             }
1825         }
1826     }
1827
1828     /* check if the client is to be set to dead */
1829 #if defined( WIN32 ) || defined( UNDER_CE )
1830     if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1831 #else
1832     if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1833 #endif
1834     {
1835         if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
1836         {
1837             /* connection closed -> end of data */
1838             if( cl->query.i_body > 0 )
1839             {
1840                 cl->query.i_body = cl->i_buffer;
1841             }
1842             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1843         }
1844         else
1845         {
1846             cl->i_state = HTTPD_CLIENT_DEAD;
1847         }
1848     }
1849
1850     /* XXX: for QT I have to disable timeout. Try to find why */
1851     if( cl->query.i_proto == HTTPD_PROTO_RTSP )
1852         cl->i_activity_timeout = 0;
1853
1854 #if 0 /* Debugging only */
1855     if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
1856     {
1857         int i;
1858
1859         fprintf( stderr, "received new request\n" );
1860         fprintf( stderr, "  - proto=%s\n",
1861                  cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
1862         fprintf( stderr, "  - version=%d\n", cl->query.i_version );
1863         fprintf( stderr, "  - msg=%d\n", cl->query.i_type );
1864         if( cl->query.i_type == HTTPD_MSG_ANSWER )
1865         {
1866             fprintf( stderr, "  - answer=%d '%s'\n", cl->query.i_status,
1867                      cl->query.psz_status );
1868         }
1869         else if( cl->query.i_type != HTTPD_MSG_NONE )
1870         {
1871             fprintf( stderr, "  - url=%s\n", cl->query.psz_url );
1872         }
1873         for( i = 0; i < cl->query.i_name; i++ )
1874         {
1875             fprintf( stderr, "  - option name='%s' value='%s'\n",
1876                      cl->query.name[i], cl->query.value[i] );
1877         }
1878     }
1879 #endif
1880 }
1881
1882 static void httpd_ClientSend( httpd_client_t *cl )
1883 {
1884     int i;
1885     int i_len;
1886
1887     if( cl->i_buffer < 0 )
1888     {
1889         /* We need to create the header */
1890         int i_size = 0;
1891         char *p;
1892         const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
1893
1894         i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
1895         for( i = 0; i < cl->answer.i_name; i++ )
1896         {
1897             i_size += strlen( cl->answer.name[i] ) + 2 +
1898                       strlen( cl->answer.value[i] ) + 2;
1899         }
1900
1901         if( cl->i_buffer_size < i_size )
1902         {
1903             cl->i_buffer_size = i_size;
1904             free( cl->p_buffer );
1905             cl->p_buffer = xmalloc( i_size );
1906         }
1907         p = (char *)cl->p_buffer;
1908
1909         p += sprintf( p, "%s.%u %d %s\r\n",
1910                       cl->answer.i_proto ==  HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
1911                       cl->answer.i_version,
1912                       cl->answer.i_status, psz_status );
1913         for( i = 0; i < cl->answer.i_name; i++ )
1914         {
1915             p += sprintf( p, "%s: %s\r\n", cl->answer.name[i],
1916                           cl->answer.value[i] );
1917         }
1918         p += sprintf( p, "\r\n" );
1919
1920         cl->i_buffer = 0;
1921         cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
1922
1923         /*fprintf( stderr, "sending answer\n" );
1924         fprintf( stderr, "%s",  cl->p_buffer );*/
1925     }
1926
1927     i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
1928                            cl->i_buffer_size - cl->i_buffer );
1929     if( i_len >= 0 )
1930     {
1931         cl->i_buffer += i_len;
1932
1933         if( cl->i_buffer >= cl->i_buffer_size )
1934         {
1935             if( cl->answer.i_body == 0  && cl->answer.i_body_offset > 0 )
1936             {
1937                 /* catch more body data */
1938                 int     i_msg = cl->query.i_type;
1939                 int64_t i_offset = cl->answer.i_body_offset;
1940
1941                 httpd_MsgClean( &cl->answer );
1942                 cl->answer.i_body_offset = i_offset;
1943
1944                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
1945                                           &cl->answer, &cl->query );
1946             }
1947
1948             if( cl->answer.i_body > 0 )
1949             {
1950                 /* send the body data */
1951                 free( cl->p_buffer );
1952                 cl->p_buffer = cl->answer.p_body;
1953                 cl->i_buffer_size = cl->answer.i_body;
1954                 cl->i_buffer = 0;
1955
1956                 cl->answer.i_body = 0;
1957                 cl->answer.p_body = NULL;
1958             }
1959             else
1960             {
1961                 /* send finished */
1962                 cl->i_state = HTTPD_CLIENT_SEND_DONE;
1963             }
1964         }
1965     }
1966     else
1967     {
1968 #if defined( WIN32 ) || defined( UNDER_CE )
1969         if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1970 #else
1971         if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1972 #endif
1973         {
1974             /* error */
1975             cl->i_state = HTTPD_CLIENT_DEAD;
1976         }
1977     }
1978 }
1979
1980 static void httpd_ClientTlsHsIn( httpd_client_t *cl )
1981 {
1982     switch( vlc_tls_ServerSessionHandshake( cl->p_tls ) )
1983     {
1984         case 0:
1985             cl->i_state = HTTPD_CLIENT_RECEIVING;
1986             break;
1987
1988         case -1:
1989             cl->i_state = HTTPD_CLIENT_DEAD;
1990             cl->p_tls = NULL;
1991             break;
1992
1993         case 2:
1994             cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
1995     }
1996 }
1997
1998 static void httpd_ClientTlsHsOut( httpd_client_t *cl )
1999 {
2000     switch( vlc_tls_ServerSessionHandshake( cl->p_tls ) )
2001     {
2002         case 0:
2003             cl->i_state = HTTPD_CLIENT_RECEIVING;
2004             break;
2005
2006         case -1:
2007             cl->i_state = HTTPD_CLIENT_DEAD;
2008             cl->p_tls = NULL;
2009             break;
2010
2011         case 1:
2012             cl->i_state = HTTPD_CLIENT_TLS_HS_IN;
2013             break;
2014     }
2015 }
2016
2017 static void* httpd_HostThread( void *data )
2018 {
2019     httpd_host_t *host = data;
2020     counter_t *p_total_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2021     counter_t *p_active_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2022     int evfd = vlc_object_waitpipe( VLC_OBJECT( host ) );
2023
2024     for( ;; )
2025     {
2026         struct pollfd ufd[host->nfd + host->i_client + 1];
2027         unsigned nfd;
2028         for( nfd = 0; nfd < host->nfd; nfd++ )
2029         {
2030             ufd[nfd].fd = host->fds[nfd];
2031             ufd[nfd].events = POLLIN;
2032             ufd[nfd].revents = 0;
2033         }
2034
2035         /* add all socket that should be read/write and close dead connection */
2036         vlc_mutex_lock( &host->lock );
2037         while( host->i_url <= 0 && host->i_ref > 0 )
2038             vlc_cond_wait( &host->wait, &host->lock );
2039
2040         mtime_t now = mdate();
2041         bool b_low_delay = false;
2042
2043         for(int i_client = 0; i_client < host->i_client; i_client++ )
2044         {
2045             httpd_client_t *cl = host->client[i_client];
2046             if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
2047                 ( cl->i_state == HTTPD_CLIENT_DEAD ||
2048                   ( cl->i_activity_timeout > 0 &&
2049                     cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
2050             {
2051                 httpd_ClientClean( cl );
2052                 stats_UpdateInteger( host, p_active_counter, -1, NULL );
2053                 TAB_REMOVE( host->i_client, host->client, cl );
2054                 free( cl );
2055                 i_client--;
2056                 continue;
2057             }
2058
2059             struct pollfd *pufd = ufd + nfd;
2060             assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
2061
2062             pufd->fd = cl->fd;
2063             pufd->events = pufd->revents = 0;
2064
2065             if( ( cl->i_state == HTTPD_CLIENT_RECEIVING )
2066                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_IN ) )
2067             {
2068                 pufd->events = POLLIN;
2069             }
2070             else if( ( cl->i_state == HTTPD_CLIENT_SENDING )
2071                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT ) )
2072             {
2073                 pufd->events = POLLOUT;
2074             }
2075             else if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
2076             {
2077                 httpd_message_t *answer = &cl->answer;
2078                 httpd_message_t *query  = &cl->query;
2079                 int i_msg = query->i_type;
2080
2081                 httpd_MsgInit( answer );
2082
2083                 /* Handle what we received */
2084                 if( i_msg == HTTPD_MSG_ANSWER )
2085                 {
2086                     cl->url     = NULL;
2087                     cl->i_state = HTTPD_CLIENT_DEAD;
2088                 }
2089                 else if( i_msg == HTTPD_MSG_OPTIONS )
2090                 {
2091
2092                     answer->i_type   = HTTPD_MSG_ANSWER;
2093                     answer->i_proto  = query->i_proto;
2094                     answer->i_status = 200;
2095                     answer->i_body = 0;
2096                     answer->p_body = NULL;
2097
2098                     httpd_MsgAdd( answer, "Server", "VLC/%s", VERSION );
2099                     httpd_MsgAdd( answer, "Content-Length", "0" );
2100
2101                     switch( query->i_proto )
2102                     {
2103                         case HTTPD_PROTO_HTTP:
2104                             answer->i_version = 1;
2105                             httpd_MsgAdd( answer, "Allow",
2106                                           "GET,HEAD,POST,OPTIONS" );
2107                             break;
2108
2109                         case HTTPD_PROTO_RTSP:
2110                         {
2111                             const char *p;
2112                             answer->i_version = 0;
2113
2114                             p = httpd_MsgGet( query, "Cseq" );
2115                             if( p != NULL )
2116                                 httpd_MsgAdd( answer, "Cseq", "%s", p );
2117                             p = httpd_MsgGet( query, "Timestamp" );
2118                             if( p != NULL )
2119                                 httpd_MsgAdd( answer, "Timestamp", "%s", p );
2120
2121                             p = httpd_MsgGet( query, "Require" );
2122                             if( p != NULL )
2123                             {
2124                                 answer->i_status = 551;
2125                                 httpd_MsgAdd( query, "Unsupported", "%s", p );
2126                             }
2127
2128                             httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
2129                                           "TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
2130                             break;
2131                         }
2132                     }
2133
2134                     cl->i_buffer = -1;  /* Force the creation of the answer in
2135                                          * httpd_ClientSend */
2136                     cl->i_state = HTTPD_CLIENT_SENDING;
2137                 }
2138                 else if( i_msg == HTTPD_MSG_NONE )
2139                 {
2140                     if( query->i_proto == HTTPD_PROTO_NONE )
2141                     {
2142                         cl->url = NULL;
2143                         cl->i_state = HTTPD_CLIENT_DEAD;
2144                     }
2145                     else
2146                     {
2147                         char *p;
2148
2149                         /* unimplemented */
2150                         answer->i_proto  = query->i_proto ;
2151                         answer->i_type   = HTTPD_MSG_ANSWER;
2152                         answer->i_version= 0;
2153                         answer->i_status = 501;
2154
2155                         answer->i_body = httpd_HtmlError (&p, 501, NULL);
2156                         answer->p_body = (uint8_t *)p;
2157                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2158
2159                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2160                         cl->i_state = HTTPD_CLIENT_SENDING;
2161                     }
2162                 }
2163                 else
2164                 {
2165                     bool b_auth_failed = false;
2166                     bool b_hosts_failed = false;
2167
2168                     /* Search the url and trigger callbacks */
2169                     for(int i = 0; i < host->i_url; i++ )
2170                     {
2171                         httpd_url_t *url = host->url[i];
2172
2173                         if( !strcmp( url->psz_url, query->psz_url ) )
2174                         {
2175                             if( url->catch[i_msg].cb )
2176                             {
2177                                 if( answer && ( url->p_acl != NULL ) )
2178                                 {
2179                                     char ip[NI_MAXNUMERICHOST];
2180
2181                                     if( ( httpd_ClientIP( cl, ip, NULL ) == NULL )
2182                                      || ACL_Check( url->p_acl, ip ) )
2183                                     {
2184                                         b_hosts_failed = true;
2185                                         break;
2186                                     }
2187                                 }
2188
2189                                 if( answer && ( *url->psz_user || *url->psz_password ) )
2190                                 {
2191                                     /* create the headers */
2192                                     const char *b64 = httpd_MsgGet( query, "Authorization" ); /* BASIC id */
2193                                     char *user = NULL, *pass = NULL;
2194
2195                                     if( b64 != NULL
2196                                      && !strncasecmp( b64, "BASIC", 5 ) )
2197                                     {
2198                                         b64 += 5;
2199                                         while( *b64 == ' ' )
2200                                             b64++;
2201
2202                                         user = vlc_b64_decode( b64 );
2203                                         if (user != NULL)
2204                                         {
2205                                             pass = strchr (user, ':');
2206                                             if (pass != NULL)
2207                                                 *pass++ = '\0';
2208                                         }
2209                                     }
2210
2211                                     if ((user == NULL) || (pass == NULL)
2212                                      || strcmp (user, url->psz_user)
2213                                      || strcmp (pass, url->psz_password))
2214                                     {
2215                                         httpd_MsgAdd( answer,
2216                                                       "WWW-Authenticate",
2217                                                       "Basic realm=\"VLC stream\"" );
2218                                         /* We fail for all url */
2219                                         b_auth_failed = true;
2220                                         free( user );
2221                                         break;
2222                                     }
2223
2224                                     free( user );
2225                                 }
2226
2227                                 if( !url->catch[i_msg].cb( url->catch[i_msg].p_sys, cl, answer, query ) )
2228                                 {
2229                                     if( answer->i_proto == HTTPD_PROTO_NONE )
2230                                     {
2231                                         /* Raw answer from a CGI */
2232                                         cl->i_buffer = cl->i_buffer_size;
2233                                     }
2234                                     else
2235                                         cl->i_buffer = -1;
2236
2237                                     /* only one url can answer */
2238                                     answer = NULL;
2239                                     if( cl->url == NULL )
2240                                     {
2241                                         cl->url = url;
2242                                     }
2243                                 }
2244                             }
2245                         }
2246                     }
2247
2248                     if( answer )
2249                     {
2250                         char *p;
2251
2252                         answer->i_proto  = query->i_proto;
2253                         answer->i_type   = HTTPD_MSG_ANSWER;
2254                         answer->i_version= 0;
2255
2256                         if( b_hosts_failed )
2257                         {
2258                             answer->i_status = 403;
2259                         }
2260                         else if( b_auth_failed )
2261                         {
2262                             answer->i_status = 401;
2263                         }
2264                         else
2265                         {
2266                             /* no url registered */
2267                             answer->i_status = 404;
2268                         }
2269
2270                         answer->i_body = httpd_HtmlError (&p,
2271                                                           answer->i_status,
2272                                                           query->psz_url);
2273                         answer->p_body = (uint8_t *)p;
2274
2275                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2276                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2277                         httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
2278                     }
2279
2280                     cl->i_state = HTTPD_CLIENT_SENDING;
2281                 }
2282             }
2283             else if( cl->i_state == HTTPD_CLIENT_SEND_DONE )
2284             {
2285                 if( !cl->b_stream_mode || cl->answer.i_body_offset == 0 )
2286                 {
2287                     const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
2288                     const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
2289                     bool b_connection = false;
2290                     bool b_keepalive = false;
2291                     bool b_query = false;
2292
2293                     cl->url = NULL;
2294                     if( psz_connection )
2295                     {
2296                         b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
2297                         b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
2298                     }
2299
2300                     if( psz_query )
2301                     {
2302                         b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
2303                     }
2304
2305                     if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
2306                           ( ( cl->query.i_version == 0 && b_keepalive ) ||
2307                             ( cl->query.i_version == 1 && !b_connection ) ) ) ||
2308                         ( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
2309                           !b_query && !b_connection ) )
2310                     {
2311                         httpd_MsgClean( &cl->query );
2312                         httpd_MsgInit( &cl->query );
2313
2314                         cl->i_buffer = 0;
2315                         cl->i_buffer_size = 1000;
2316                         free( cl->p_buffer );
2317                         cl->p_buffer = xmalloc( cl->i_buffer_size );
2318                         cl->i_state = HTTPD_CLIENT_RECEIVING;
2319                     }
2320                     else
2321                     {
2322                         cl->i_state = HTTPD_CLIENT_DEAD;
2323                     }
2324                     httpd_MsgClean( &cl->answer );
2325                 }
2326                 else
2327                 {
2328                     int64_t i_offset = cl->answer.i_body_offset;
2329                     httpd_MsgClean( &cl->answer );
2330
2331                     cl->answer.i_body_offset = i_offset;
2332                     free( cl->p_buffer );
2333                     cl->p_buffer = NULL;
2334                     cl->i_buffer = 0;
2335                     cl->i_buffer_size = 0;
2336
2337                     cl->i_state = HTTPD_CLIENT_WAITING;
2338                 }
2339             }
2340             else if( cl->i_state == HTTPD_CLIENT_WAITING )
2341             {
2342                 int64_t i_offset = cl->answer.i_body_offset;
2343                 int     i_msg = cl->query.i_type;
2344
2345                 httpd_MsgInit( &cl->answer );
2346                 cl->answer.i_body_offset = i_offset;
2347
2348                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
2349                                           &cl->answer, &cl->query );
2350                 if( cl->answer.i_type != HTTPD_MSG_NONE )
2351                 {
2352                     /* we have new data, so re-enter send mode */
2353                     cl->i_buffer      = 0;
2354                     cl->p_buffer      = cl->answer.p_body;
2355                     cl->i_buffer_size = cl->answer.i_body;
2356                     cl->answer.p_body = NULL;
2357                     cl->answer.i_body = 0;
2358                     cl->i_state = HTTPD_CLIENT_SENDING;
2359                 }
2360             }
2361
2362             if (pufd->events != 0)
2363                 nfd++;
2364             else
2365                 b_low_delay = true;
2366         }
2367         vlc_mutex_unlock( &host->lock );
2368
2369         ufd[nfd].fd = evfd;
2370         ufd[nfd].events = POLLIN;
2371         ufd[nfd].revents = 0;
2372         nfd++;
2373
2374         /* we will wait 20ms (not too big) if HTTPD_CLIENT_WAITING */
2375         switch( poll( ufd, nfd, b_low_delay ? 20 : -1) )
2376         {
2377             case -1:
2378                 if (errno != EINTR)
2379                 {
2380                     /* Kernel on low memory or a bug: pace */
2381                     msg_Err( host, "polling error: %m" );
2382                     msleep( 100000 );
2383                 }
2384             case 0:
2385                 continue;
2386         }
2387
2388         if( ufd[nfd - 1].revents )
2389             break;
2390
2391         /* Handle client sockets */
2392         vlc_mutex_lock( &host->lock );
2393         now = mdate();
2394         nfd = host->nfd;
2395         for( int i_client = 0; i_client < host->i_client; i_client++ )
2396         {
2397             httpd_client_t *cl = host->client[i_client];
2398             const struct pollfd *pufd = &ufd[nfd];
2399
2400             assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
2401
2402             if( cl->fd != pufd->fd )
2403                 continue; // we were not waiting for this client
2404             ++nfd;
2405             if( pufd->revents == 0 )
2406                 continue; // no event received
2407
2408             cl->i_activity_date = now;
2409
2410             if( cl->i_state == HTTPD_CLIENT_RECEIVING )
2411             {
2412                 httpd_ClientRecv( cl );
2413             }
2414             else if( cl->i_state == HTTPD_CLIENT_SENDING )
2415             {
2416                 httpd_ClientSend( cl );
2417             }
2418             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_IN )
2419             {
2420                 httpd_ClientTlsHsIn( cl );
2421             }
2422             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT )
2423             {
2424                 httpd_ClientTlsHsOut( cl );
2425             }
2426         }
2427         vlc_mutex_unlock( &host->lock );
2428
2429         /* Handle server sockets (accept new connections) */
2430         for( nfd = 0; nfd < host->nfd; nfd++ )
2431         {
2432             httpd_client_t *cl;
2433             int i_state = -1;
2434             int fd = ufd[nfd].fd;
2435
2436             assert (fd == host->fds[nfd]);
2437
2438             if( ufd[nfd].revents == 0 )
2439                 continue;
2440
2441             /* */
2442             fd = vlc_accept (fd, NULL, NULL, true);
2443             if (fd == -1)
2444                 continue;
2445             setsockopt (fd, SOL_SOCKET, SO_REUSEADDR,
2446                         &(int){ 1 }, sizeof(int));
2447
2448             vlc_tls_t *p_tls;
2449
2450             if( host->p_tls != NULL )
2451             {
2452                 p_tls = vlc_tls_ServerSessionCreate( host->p_tls, fd );
2453                 switch( vlc_tls_ServerSessionHandshake( p_tls ) )
2454                 {
2455                     case -1:
2456                         msg_Err( host, "Rejecting TLS connection" );
2457                         /* p_tls is destroyed implicitly */
2458                         net_Close( fd );
2459                         fd = -1;
2460                         p_tls = NULL;
2461                         continue;
2462
2463                     case 1: /* missing input - most likely */
2464                         i_state = HTTPD_CLIENT_TLS_HS_IN;
2465                         break;
2466
2467                     case 2: /* missing output */
2468                         i_state = HTTPD_CLIENT_TLS_HS_OUT;
2469                         break;
2470                 }
2471             }
2472             else
2473                 p_tls = NULL;
2474
2475             stats_UpdateInteger( host, p_total_counter, 1, NULL );
2476             stats_UpdateInteger( host, p_active_counter, 1, NULL );
2477             cl = httpd_ClientNew( fd, p_tls, now );
2478             vlc_mutex_lock( &host->lock );
2479             TAB_APPEND( host->i_client, host->client, cl );
2480             vlc_mutex_unlock( &host->lock );
2481             if( i_state != -1 )
2482                 cl->i_state = i_state; // override state for TLS
2483         }
2484
2485     }
2486
2487     if( p_total_counter )
2488         stats_CounterClean( p_total_counter );
2489     if( p_active_counter )
2490         stats_CounterClean( p_active_counter );
2491     return NULL;
2492 }