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 "../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_POLL
  49 # include <poll.h>
  50 #endif
  51
  52 #if defined( UNDER_CE )
  53 #   include <winsock.h>
  54 #elif defined( WIN32 )
  55 #   include <winsock2.h>
  56 #else
  57 #   include <sys/socket.h>
  58 #endif
  59
  60 #if defined( WIN32 )
  61 /* We need HUGE buffer otherwise TCP throughput is very limited */
  62 #define HTTPD_CL_BUFSIZE 1000000
  63 #else
  64 #define HTTPD_CL_BUFSIZE 10000
  65 #endif
  66
  67 static void httpd_ClientClean( httpd_client_t *cl );
  68
  69 struct httpd_t
  70 {
  71     VLC_COMMON_MEMBERS
  72
  73     int          i_host;
  74     httpd_host_t **host;
  75 };
  76
  77
  78 /* each host run in his own thread */
  79 struct httpd_host_t
  80 {
  81     VLC_COMMON_MEMBERS
  82
  83     httpd_t     *httpd;
  84
  85     /* ref count */
  86     unsigned    i_ref;
  87
  88     /* address/port and socket for listening at connections */
  89     char        *psz_hostname;
  90     int         i_port;
  91     int         *fds;
  92     unsigned     nfd;
  93
  94     vlc_thread_t thread;
  95     vlc_mutex_t lock;
  96     vlc_cond_t  wait;
  97
  98     /* all registered url (becarefull that 2 httpd_url_t could point at the same url)
  99      * This will slow down the url research but make my live easier
 100      * All url will have their cb trigger, but only the first one can answer
 101      * */
 102     int         i_url;
 103     httpd_url_t **url;
 104
 105     int            i_client;
 106     httpd_client_t **client;
 107
 108     /* TLS data */
 109     tls_server_t *p_tls;
 110 };
 111
 112
 113 struct httpd_url_t
 114 {
 115     httpd_host_t *host;
 116
 117     vlc_mutex_t lock;
 118
 119     char      *psz_url;
 120     char      *psz_user;
 121     char      *psz_password;
 122     vlc_acl_t *p_acl;
 123
 124     struct
 125     {
 126         httpd_callback_t     cb;
 127         httpd_callback_sys_t *p_sys;
 128     } catch[HTTPD_MSG_MAX];
 129 };
 130
 131 /* status */
 132 enum
 133 {
 134     HTTPD_CLIENT_RECEIVING,
 135     HTTPD_CLIENT_RECEIVE_DONE,
 136
 137     HTTPD_CLIENT_SENDING,
 138     HTTPD_CLIENT_SEND_DONE,
 139
 140     HTTPD_CLIENT_WAITING,
 141
 142     HTTPD_CLIENT_DEAD,
 143
 144     HTTPD_CLIENT_TLS_HS_IN,
 145     HTTPD_CLIENT_TLS_HS_OUT
 146 };
 147
 148 /* mode */
 149 enum
 150 {
 151     HTTPD_CLIENT_FILE,      /* default */
 152     HTTPD_CLIENT_STREAM,    /* regulary get data from cb */
 153     HTTPD_CLIENT_BIDIR,     /* check for reading and get data from cb */
 154 };
 155
 156 struct httpd_client_t
 157 {
 158     httpd_url_t *url;
 159
 160     int     i_ref;
 161
 162     int     fd;
 163
 164     int     i_mode;
 165     int     i_state;
 166     int     b_read_waiting; /* stop as soon as possible sending */
 167
 168     mtime_t i_activity_date;
 169     mtime_t i_activity_timeout;
 170
 171     /* buffer for reading header */
 172     int     i_buffer_size;
 173     int     i_buffer;
 174     uint8_t *p_buffer;
 175
 176     /* */
 177     httpd_message_t query;  /* client -> httpd */
 178     httpd_message_t answer; /* httpd -> client */
 179
 180     /* TLS data */
 181     tls_session_t *p_tls;
 182 };
 183
 184
 185 /*****************************************************************************
 186  * Various functions
 187  *****************************************************************************/
 188 static const struct
 189 {
 190     const char psz_ext[8];
 191     const char *psz_mime;
 192 } http_mime[] =
 193 {
 194     { ".htm",   "text/html" },
 195     { ".html",  "text/html" },
 196     { ".txt",   "text/plain" },
 197     { ".xml",   "text/xml" },
 198     { ".dtd",   "text/dtd" },
 199
 200     { ".css",   "text/css" },
 201
 202     /* image mime */
 203     { ".gif",   "image/gif" },
 204     { ".jpe",   "image/jpeg" },
 205     { ".jpg",   "image/jpeg" },
 206     { ".jpeg",  "image/jpeg" },
 207     { ".png",   "image/png" },
 208     /* same as modules/mux/mpjpeg.c here: */
 209     { ".mpjpeg","multipart/x-mixed-replace; boundary=7b3cc56e5f51db803f790dad720ed50a" },
 210
 211     /* media mime */
 212     { ".avi",   "video/avi" },
 213     { ".asf",   "video/x-ms-asf" },
 214     { ".m1a",   "audio/mpeg" },
 215     { ".m2a",   "audio/mpeg" },
 216     { ".m1v",   "video/mpeg" },
 217     { ".m2v",   "video/mpeg" },
 218     { ".mp2",   "audio/mpeg" },
 219     { ".mp3",   "audio/mpeg" },
 220     { ".mpa",   "audio/mpeg" },
 221     { ".mpg",   "video/mpeg" },
 222     { ".mpeg",  "video/mpeg" },
 223     { ".mpe",   "video/mpeg" },
 224     { ".mov",   "video/quicktime" },
 225     { ".moov",  "video/quicktime" },
 226     { ".oga",   "audio/ogg" },
 227     { ".ogg",   "application/ogg" },
 228     { ".ogm",   "application/ogg" },
 229     { ".ogv",   "video/ogg" },
 230     { ".ogx",   "application/ogg" },
 231     { ".spx",   "audio/ogg" },
 232     { ".wav",   "audio/wav" },
 233     { ".wma",   "audio/x-ms-wma" },
 234     { ".wmv",   "video/x-ms-wmv" },
 235
 236
 237     /* end */
 238     { "",       "" }
 239 };
 240
 241 static const char *httpd_MimeFromUrl( const char *psz_url )
 242 {
 243
 244     char *psz_ext;
 245
 246     psz_ext = strrchr( psz_url, '.' );
 247     if( psz_ext )
 248     {
 249         int i;
 250
 251         for( i = 0; http_mime[i].psz_ext[0] ; i++ )
 252         {
 253             if( !strcasecmp( http_mime[i].psz_ext, psz_ext ) )
 254             {
 255                 return http_mime[i].psz_mime;
 256             }
 257         }
 258     }
 259     return "application/octet-stream";
 260 }
 261
 262
 263 typedef struct
 264 {
 265     unsigned   i_code;
 266     const char psz_reason[36];
 267 } http_status_info;
 268
 269 static const http_status_info http_reason[] =
 270 {
 271   /*{ 100, "Continue" },
 272     { 101, "Switching Protocols" },*/
 273     { 200, "OK" },
 274   /*{ 201, "Created" },
 275     { 202, "Accepted" },
 276     { 203, "Non-authoritative information" },
 277     { 204, "No content" },
 278     { 205, "Reset content" },
 279     { 206, "Partial content" },
 280     { 250, "Low on storage space" },
 281     { 300, "Multiple choices" },*/
 282     { 301, "Moved permanently" },
 283   /*{ 302, "Moved temporarily" },
 284     { 303, "See other" },
 285     { 304, "Not modified" },
 286     { 305, "Use proxy" },
 287     { 307, "Temporary redirect" },
 288     { 400, "Bad request" },*/
 289     { 401, "Unauthorized" },
 290   /*{ 402, "Payment Required" },*/
 291     { 403, "Forbidden" },
 292     { 404, "Not found" },
 293     { 405, "Method not allowed" },
 294   /*{ 406, "Not acceptable" },
 295     { 407, "Proxy authentication required" },
 296     { 408, "Request time-out" },
 297     { 409, "Conflict" },
 298     { 410, "Gone" },
 299     { 411, "Length required" },
 300     { 412, "Precondition failed" },
 301     { 413, "Request entity too large" },
 302     { 414, "Request-URI too large" },
 303     { 415, "Unsupported media Type" },
 304     { 416, "Requested range not satisfiable" },
 305     { 417, "Expectation failed" },
 306     { 451, "Parameter not understood" },
 307     { 452, "Conference not found" },
 308     { 453, "Not enough bandwidth" },*/
 309     { 454, "Session not found" },
 310   /*{ 455, "Method not valid in this State" },*/
 311     { 456, "Header field not valid for resource" },
 312   /*{ 457, "Invalid range" },
 313     { 458, "Read-only parameter" },*/
 314     { 459, "Aggregate operation not allowed" },
 315     { 460, "Non-aggregate operation not allowed" },
 316     { 461, "Unsupported transport" },
 317   /*{ 462, "Destination unreachable" },*/
 318     { 500, "Internal server error" },
 319     { 501, "Not implemented" },
 320   /*{ 502, "Bad gateway" },*/
 321     { 503, "Service unavailable" },
 322   /*{ 504, "Gateway time-out" },*/
 323     { 505, "Protocol version not supported" },
 324     { 551, "Option not supported" },
 325     { 999, "" }
 326 };
 327
 328 static const char psz_fallback_reason[5][16] =
 329 { "Continue", "OK", "Found", "Client error", "Server error" };
 330
 331 static const char *httpd_ReasonFromCode( unsigned i_code )
 332 {
 333     const http_status_info *p;
 334
 335     assert( ( i_code >= 100 ) && ( i_code <= 599 ) );
 336
 337     for (p = http_reason; i_code > p->i_code; p++);
 338
 339     if( p->i_code == i_code )
 340         return p->psz_reason;
 341
 342     return psz_fallback_reason[(i_code / 100) - 1];
 343 }
 344
 345
 346 static size_t httpd_HtmlError (char **body, int code, const char *url)
 347 {
 348     const char *errname = httpd_ReasonFromCode (code);
 349     assert (errname != NULL);
 350
 351     int res = asprintf (body,
 352         "<?xml version=\"1.0\" encoding=\"ascii\" ?>\n"
 353         "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
 354         " \"http://www.w3.org/TR/xhtml10/DTD/xhtml10strict.dtd\">\n"
 355         "<html lang=\"en\">\n"
 356         "<head>\n"
 357         "<title>%s</title>\n"
 358         "</head>\n"
 359         "<body>\n"
 360         "<h1>%d %s%s%s%s</h1>\n"
 361         "<hr />\n"
 362         "<a href=\"http://www.videolan.org\">VideoLAN</a>\n"
 363         "</body>\n"
 364         "</html>\n", errname, code, errname,
 365         (url ? " (" : ""), (url ? url : ""), (url ? ")" : ""));
 366
 367     if (res == -1)
 368     {
 369         *body = NULL;
 370         return 0;
 371     }
 372
 373     return (size_t)res;
 374 }
 375
 376
 377 /*****************************************************************************
 378  * High Level Functions: httpd_file_t
 379  *****************************************************************************/
 380 struct httpd_file_t
 381 {
 382     httpd_url_t *url;
 383
 384     char *psz_url;
 385     char *psz_mime;
 386
 387     httpd_file_callback_t pf_fill;
 388     httpd_file_sys_t      *p_sys;
 389
 390 };
 391
 392 static int
 393 httpd_FileCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
 394                     httpd_message_t *answer, const httpd_message_t *query )
 395 {
 396     httpd_file_t *file = (httpd_file_t*)p_sys;
 397     uint8_t **pp_body, *p_body;
 398     const char *psz_connection;
 399     int *pi_body, i_body;
 400
 401     if( answer == NULL || query == NULL )
 402     {
 403         return VLC_SUCCESS;
 404     }
 405     answer->i_proto  = HTTPD_PROTO_HTTP;
 406     answer->i_version= 1;
 407     answer->i_type   = HTTPD_MSG_ANSWER;
 408
 409     answer->i_status = 200;
 410
 411     httpd_MsgAdd( answer, "Content-type",  "%s", file->psz_mime );
 412     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 413
 414     if( query->i_type != HTTPD_MSG_HEAD )
 415     {
 416         pp_body = &answer->p_body;
 417         pi_body = &answer->i_body;
 418     }
 419     else
 420     {
 421         /* The file still needs to be executed. */
 422         p_body = NULL;
 423         i_body = 0;
 424         pp_body = &p_body;
 425         pi_body = &i_body;
 426     }
 427
 428     if( query->i_type == HTTPD_MSG_POST )
 429     {
 430         /* msg_Warn not supported */
 431     }
 432
 433     uint8_t *psz_args = query->psz_args;
 434     file->pf_fill( file->p_sys, file, psz_args, pp_body, pi_body );
 435
 436     if( query->i_type == HTTPD_MSG_HEAD && p_body != NULL )
 437     {
 438         free( p_body );
 439     }
 440
 441     /* We respect client request */
 442     psz_connection = httpd_MsgGet( &cl->query, "Connection" );
 443     if( psz_connection != NULL )
 444     {
 445         httpd_MsgAdd( answer, "Connection", "%s", psz_connection );
 446     }
 447
 448     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
 449
 450     return VLC_SUCCESS;
 451 }
 452
 453 httpd_file_t *httpd_FileNew( httpd_host_t *host,
 454                              const char *psz_url, const char *psz_mime,
 455                              const char *psz_user, const char *psz_password,
 456                              const vlc_acl_t *p_acl, httpd_file_callback_t pf_fill,
 457                              httpd_file_sys_t *p_sys )
 458 {
 459     httpd_file_t *file = xmalloc( sizeof( httpd_file_t ) );
 460
 461     if( ( file->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 462                                           psz_password, p_acl )
 463         ) == NULL )
 464     {
 465         free( file );
 466         return NULL;
 467     }
 468
 469     file->psz_url  = strdup( psz_url );
 470     if( psz_mime && *psz_mime )
 471     {
 472         file->psz_mime = strdup( psz_mime );
 473     }
 474     else
 475     {
 476         file->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
 477     }
 478
 479     file->pf_fill = pf_fill;
 480     file->p_sys   = p_sys;
 481
 482     httpd_UrlCatch( file->url, HTTPD_MSG_HEAD, httpd_FileCallBack,
 483                     (httpd_callback_sys_t*)file );
 484     httpd_UrlCatch( file->url, HTTPD_MSG_GET,  httpd_FileCallBack,
 485                     (httpd_callback_sys_t*)file );
 486     httpd_UrlCatch( file->url, HTTPD_MSG_POST, httpd_FileCallBack,
 487                     (httpd_callback_sys_t*)file );
 488
 489     return file;
 490 }
 491
 492 httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
 493 {
 494     httpd_file_sys_t *p_sys = file->p_sys;
 495
 496     httpd_UrlDelete( file->url );
 497
 498     free( file->psz_url );
 499     free( file->psz_mime );
 500
 501     free( file );
 502
 503     return p_sys;
 504 }
 505
 506 /*****************************************************************************
 507  * High Level Functions: httpd_handler_t (for CGIs)
 508  *****************************************************************************/
 509 struct httpd_handler_t
 510 {
 511     httpd_url_t *url;
 512
 513     httpd_handler_callback_t pf_fill;
 514     httpd_handler_sys_t      *p_sys;
 515
 516 };
 517
 518 static int
 519 httpd_HandlerCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
 520                        httpd_message_t *answer, const httpd_message_t *query )
 521 {
 522     httpd_handler_t *handler = (httpd_handler_t*)p_sys;
 523     char psz_remote_addr[NI_MAXNUMERICHOST];
 524
 525     if( answer == NULL || query == NULL )
 526     {
 527         return VLC_SUCCESS;
 528     }
 529     answer->i_proto  = HTTPD_PROTO_NONE;
 530     answer->i_type   = HTTPD_MSG_ANSWER;
 531
 532     /* We do it ourselves, thanks */
 533     answer->i_status = 0;
 534
 535     if( httpd_ClientIP( cl, psz_remote_addr ) == NULL )
 536         *psz_remote_addr = '\0';
 537
 538     uint8_t *psz_args = query->psz_args;
 539     handler->pf_fill( handler->p_sys, handler, query->psz_url, psz_args,
 540                       query->i_type, query->p_body, query->i_body,
 541                       psz_remote_addr, NULL,
 542                       &answer->p_body, &answer->i_body );
 543
 544     if( query->i_type == HTTPD_MSG_HEAD )
 545     {
 546         char *p = (char *)answer->p_body;
 547
 548         /* Looks for end of header (i.e. one empty line) */
 549         while ( (p = strchr( p, '\r' )) != NULL )
 550         {
 551             if( p[1] && p[1] == '\n' && p[2] && p[2] == '\r'
 552                  && p[3] && p[3] == '\n' )
 553             {
 554                 break;
 555             }
 556         }
 557
 558         if( p != NULL )
 559         {
 560             p[4] = '\0';
 561             answer->i_body = strlen((char*)answer->p_body) + 1;
 562             answer->p_body = xrealloc( answer->p_body, answer->i_body );
 563         }
 564     }
 565
 566     if( strncmp( (char *)answer->p_body, "HTTP/1.", 7 ) )
 567     {
 568         int i_status, i_headers;
 569         char *psz_headers, *psz_new;
 570         const char *psz_status;
 571
 572         if( !strncmp( (char *)answer->p_body, "Status: ", 8 ) )
 573         {
 574             /* Apache-style */
 575             i_status = strtol( (char *)&answer->p_body[8], &psz_headers, 0 );
 576             if( *psz_headers == '\r' || *psz_headers == '\n' ) psz_headers++;
 577             if( *psz_headers == '\n' ) psz_headers++;
 578             i_headers = answer->i_body - (psz_headers - (char *)answer->p_body);
 579         }
 580         else
 581         {
 582             i_status = 200;
 583             psz_headers = (char *)answer->p_body;
 584             i_headers = answer->i_body;
 585         }
 586
 587         psz_status = httpd_ReasonFromCode( i_status );
 588         answer->i_body = sizeof("HTTP/1.0 xxx \r\n")
 589                         + strlen(psz_status) + i_headers - 1;
 590         psz_new = (char *)xmalloc( answer->i_body + 1);
 591         sprintf( psz_new, "HTTP/1.0 %03d %s\r\n", i_status, psz_status );
 592         memcpy( &psz_new[strlen(psz_new)], psz_headers, i_headers );
 593         free( answer->p_body );
 594         answer->p_body = (uint8_t *)psz_new;
 595     }
 596
 597     return VLC_SUCCESS;
 598 }
 599
 600 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
 601                                    const char *psz_user,
 602                                    const char *psz_password,
 603                                    const vlc_acl_t *p_acl,
 604                                    httpd_handler_callback_t pf_fill,
 605                                    httpd_handler_sys_t *p_sys )
 606 {
 607     httpd_handler_t *handler = xmalloc( sizeof( httpd_handler_t ) );
 608
 609     if( ( handler->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 610                                              psz_password, p_acl )
 611         ) == NULL )
 612     {
 613         free( handler );
 614         return NULL;
 615     }
 616
 617     handler->pf_fill = pf_fill;
 618     handler->p_sys   = p_sys;
 619
 620     httpd_UrlCatch( handler->url, HTTPD_MSG_HEAD, httpd_HandlerCallBack,
 621                     (httpd_callback_sys_t*)handler );
 622     httpd_UrlCatch( handler->url, HTTPD_MSG_GET,  httpd_HandlerCallBack,
 623                     (httpd_callback_sys_t*)handler );
 624     httpd_UrlCatch( handler->url, HTTPD_MSG_POST, httpd_HandlerCallBack,
 625                     (httpd_callback_sys_t*)handler );
 626
 627     return handler;
 628 }
 629
 630 httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
 631 {
 632     httpd_handler_sys_t *p_sys = handler->p_sys;
 633     httpd_UrlDelete( handler->url );
 634     free( handler );
 635     return p_sys;
 636 }
 637
 638 /*****************************************************************************
 639  * High Level Functions: httpd_redirect_t
 640  *****************************************************************************/
 641 struct httpd_redirect_t
 642 {
 643     httpd_url_t *url;
 644     char        *psz_dst;
 645 };
 646
 647 static int httpd_RedirectCallBack( httpd_callback_sys_t *p_sys,
 648                                    httpd_client_t *cl, httpd_message_t *answer,
 649                                    const httpd_message_t *query )
 650 {
 651     httpd_redirect_t *rdir = (httpd_redirect_t*)p_sys;
 652     char *p_body;
 653     (void)cl;
 654
 655     if( answer == NULL || query == NULL )
 656     {
 657         return VLC_SUCCESS;
 658     }
 659     answer->i_proto  = HTTPD_PROTO_HTTP;
 660     answer->i_version= 1;
 661     answer->i_type   = HTTPD_MSG_ANSWER;
 662     answer->i_status = 301;
 663
 664     answer->i_body = httpd_HtmlError (&p_body, 301, rdir->psz_dst);
 665     answer->p_body = (unsigned char *)p_body;
 666
 667     /* XXX check if it's ok or we need to set an absolute url */
 668     httpd_MsgAdd( answer, "Location",  "%s", rdir->psz_dst );
 669
 670     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
 671
 672     return VLC_SUCCESS;
 673 }
 674
 675 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
 676                                      const char *psz_url_src )
 677 {
 678     httpd_redirect_t *rdir = xmalloc( sizeof( httpd_redirect_t ) );
 679
 680     if( !( rdir->url = httpd_UrlNewUnique( host, psz_url_src, NULL, NULL, NULL ) ) )
 681     {
 682         free( rdir );
 683         return NULL;
 684     }
 685     rdir->psz_dst = strdup( psz_url_dst );
 686
 687     /* Redirect apply for all HTTP request and RTSP DESCRIBE resquest */
 688     httpd_UrlCatch( rdir->url, HTTPD_MSG_HEAD, httpd_RedirectCallBack,
 689                     (httpd_callback_sys_t*)rdir );
 690     httpd_UrlCatch( rdir->url, HTTPD_MSG_GET, httpd_RedirectCallBack,
 691                     (httpd_callback_sys_t*)rdir );
 692     httpd_UrlCatch( rdir->url, HTTPD_MSG_POST, httpd_RedirectCallBack,
 693                     (httpd_callback_sys_t*)rdir );
 694     httpd_UrlCatch( rdir->url, HTTPD_MSG_DESCRIBE, httpd_RedirectCallBack,
 695                     (httpd_callback_sys_t*)rdir );
 696
 697     return rdir;
 698 }
 699 void httpd_RedirectDelete( httpd_redirect_t *rdir )
 700 {
 701     httpd_UrlDelete( rdir->url );
 702     free( rdir->psz_dst );
 703     free( rdir );
 704 }
 705
 706 /*****************************************************************************
 707  * High Level Funtions: httpd_stream_t
 708  *****************************************************************************/
 709 struct httpd_stream_t
 710 {
 711     vlc_mutex_t lock;
 712     httpd_url_t *url;
 713
 714     char    *psz_mime;
 715
 716     /* Header to send as first packet */
 717     uint8_t *p_header;
 718     int     i_header;
 719
 720     /* circular buffer */
 721     int         i_buffer_size;      /* buffer size, can't be reallocated smaller */
 722     uint8_t     *p_buffer;          /* buffer */
 723     int64_t     i_buffer_pos;       /* absolute position from begining */
 724     int64_t     i_buffer_last_pos;  /* a new connection will start with that */
 725 };
 726
 727 static int httpd_StreamCallBack( httpd_callback_sys_t *p_sys,
 728                                  httpd_client_t *cl, httpd_message_t *answer,
 729                                  const httpd_message_t *query )
 730 {
 731     httpd_stream_t *stream = (httpd_stream_t*)p_sys;
 732
 733     if( answer == NULL || query == NULL || cl == NULL )
 734     {
 735         return VLC_SUCCESS;
 736     }
 737
 738     if( answer->i_body_offset > 0 )
 739     {
 740         int64_t i_write;
 741         int     i_pos;
 742
 743 #if 0
 744         fprintf( stderr, "httpd_StreamCallBack i_body_offset=%lld\n",
 745                  answer->i_body_offset );
 746 #endif
 747
 748         if( answer->i_body_offset >= stream->i_buffer_pos )
 749         {
 750             /* fprintf( stderr, "httpd_StreamCallBack: no data\n" ); */
 751             return VLC_EGENERIC;    /* wait, no data available */
 752         }
 753         if( answer->i_body_offset + stream->i_buffer_size <
 754             stream->i_buffer_pos )
 755         {
 756             /* this client isn't fast enough */
 757 #if 0
 758             fprintf( stderr, "fixing i_body_offset (old=%lld new=%lld)\n",
 759                      answer->i_body_offset, stream->i_buffer_last_pos );
 760 #endif
 761             answer->i_body_offset = stream->i_buffer_last_pos;
 762         }
 763
 764         i_pos   = answer->i_body_offset % stream->i_buffer_size;
 765         i_write = stream->i_buffer_pos - answer->i_body_offset;
 766         if( i_write > HTTPD_CL_BUFSIZE )
 767         {
 768             i_write = HTTPD_CL_BUFSIZE;
 769         }
 770         else if( i_write <= 0 )
 771         {
 772             return VLC_EGENERIC;    /* wait, no data available */
 773         }
 774
 775         /* Don't go past the end of the circular buffer */
 776         i_write = __MIN( i_write, stream->i_buffer_size - i_pos );
 777
 778         /* using HTTPD_MSG_ANSWER -> data available */
 779         answer->i_proto  = HTTPD_PROTO_HTTP;
 780         answer->i_version= 0;
 781         answer->i_type   = HTTPD_MSG_ANSWER;
 782
 783         answer->i_body = i_write;
 784         answer->p_body = xmalloc( i_write );
 785         memcpy( answer->p_body, &stream->p_buffer[i_pos], i_write );
 786
 787         answer->i_body_offset += i_write;
 788
 789         return VLC_SUCCESS;
 790     }
 791     else
 792     {
 793         answer->i_proto  = HTTPD_PROTO_HTTP;
 794         answer->i_version= 0;
 795         answer->i_type   = HTTPD_MSG_ANSWER;
 796
 797         answer->i_status = 200;
 798
 799         if( query->i_type != HTTPD_MSG_HEAD )
 800         {
 801             httpd_ClientModeStream( cl );
 802             vlc_mutex_lock( &stream->lock );
 803             /* Send the header */
 804             if( stream->i_header > 0 )
 805             {
 806                 answer->i_body = stream->i_header;
 807                 answer->p_body = xmalloc( stream->i_header );
 808                 memcpy( answer->p_body, stream->p_header, stream->i_header );
 809             }
 810             answer->i_body_offset = stream->i_buffer_last_pos;
 811             vlc_mutex_unlock( &stream->lock );
 812         }
 813         else
 814         {
 815             httpd_MsgAdd( answer, "Content-Length", "%d", 0 );
 816             answer->i_body_offset = 0;
 817         }
 818
 819         if( !strcmp( stream->psz_mime, "video/x-ms-asf-stream" ) )
 820         {
 821             bool b_xplaystream = false;
 822             int i;
 823
 824             httpd_MsgAdd( answer, "Content-type", "%s",
 825                           "application/octet-stream" );
 826             httpd_MsgAdd( answer, "Server", "Cougar 4.1.0.3921" );
 827             httpd_MsgAdd( answer, "Pragma", "no-cache" );
 828             httpd_MsgAdd( answer, "Pragma", "client-id=%d", rand()&0x7fff );
 829             httpd_MsgAdd( answer, "Pragma", "features=\"broadcast\"" );
 830
 831             /* Check if there is a xPlayStrm=1 */
 832             for( i = 0; i < query->i_name; i++ )
 833             {
 834                 if( !strcasecmp( query->name[i],  "Pragma" ) &&
 835                     strstr( query->value[i], "xPlayStrm=1" ) )
 836                 {
 837                     b_xplaystream = true;
 838                 }
 839             }
 840
 841             if( !b_xplaystream )
 842             {
 843                 answer->i_body_offset = 0;
 844             }
 845         }
 846         else
 847         {
 848             httpd_MsgAdd( answer, "Content-type",  "%s", stream->psz_mime );
 849         }
 850         httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 851         return VLC_SUCCESS;
 852     }
 853 }
 854
 855 httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
 856                                  const char *psz_url, const char *psz_mime,
 857                                  const char *psz_user, const char *psz_password,
 858                                  const vlc_acl_t *p_acl )
 859 {
 860     httpd_stream_t *stream = xmalloc( sizeof( httpd_stream_t ) );
 861
 862     if( ( stream->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 863                                             psz_password, p_acl )
 864         ) == NULL )
 865     {
 866         free( stream );
 867         return NULL;
 868     }
 869     vlc_mutex_init( &stream->lock );
 870     if( psz_mime && *psz_mime )
 871     {
 872         stream->psz_mime = strdup( psz_mime );
 873     }
 874     else
 875     {
 876         stream->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
 877     }
 878     stream->i_header = 0;
 879     stream->p_header = NULL;
 880     stream->i_buffer_size = 5000000;    /* 5 Mo per stream */
 881     stream->p_buffer = xmalloc( stream->i_buffer_size );
 882     /* We set to 1 to make life simpler
 883      * (this way i_body_offset can never be 0) */
 884     stream->i_buffer_pos = 1;
 885     stream->i_buffer_last_pos = 1;
 886
 887     httpd_UrlCatch( stream->url, HTTPD_MSG_HEAD, httpd_StreamCallBack,
 888                     (httpd_callback_sys_t*)stream );
 889     httpd_UrlCatch( stream->url, HTTPD_MSG_GET, httpd_StreamCallBack,
 890                     (httpd_callback_sys_t*)stream );
 891     httpd_UrlCatch( stream->url, HTTPD_MSG_POST, httpd_StreamCallBack,
 892                     (httpd_callback_sys_t*)stream );
 893
 894     return stream;
 895 }
 896
 897 int httpd_StreamHeader( httpd_stream_t *stream, uint8_t *p_data, int i_data )
 898 {
 899     vlc_mutex_lock( &stream->lock );
 900     free( stream->p_header );
 901     stream->p_header = NULL;
 902
 903     stream->i_header = i_data;
 904     if( i_data > 0 )
 905     {
 906         stream->p_header = xmalloc( i_data );
 907         memcpy( stream->p_header, p_data, i_data );
 908     }
 909     vlc_mutex_unlock( &stream->lock );
 910
 911     return VLC_SUCCESS;
 912 }
 913
 914 int httpd_StreamSend( httpd_stream_t *stream, uint8_t *p_data, int i_data )
 915 {
 916     int i_count;
 917     int i_pos;
 918
 919     if( i_data < 0 || p_data == NULL )
 920     {
 921         return VLC_SUCCESS;
 922     }
 923     vlc_mutex_lock( &stream->lock );
 924
 925     /* save this pointer (to be used by new connection) */
 926     stream->i_buffer_last_pos = stream->i_buffer_pos;
 927
 928     i_pos = stream->i_buffer_pos % stream->i_buffer_size;
 929     i_count = i_data;
 930     while( i_count > 0)
 931     {
 932         int i_copy;
 933
 934         i_copy = __MIN( i_count, stream->i_buffer_size - i_pos );
 935
 936         /* Ok, we can't go past the end of our buffer */
 937         memcpy( &stream->p_buffer[i_pos], p_data, i_copy );
 938
 939         i_pos = ( i_pos + i_copy ) % stream->i_buffer_size;
 940         i_count -= i_copy;
 941         p_data  += i_copy;
 942     }
 943
 944     stream->i_buffer_pos += i_data;
 945
 946     vlc_mutex_unlock( &stream->lock );
 947     return VLC_SUCCESS;
 948 }
 949
 950 void httpd_StreamDelete( httpd_stream_t *stream )
 951 {
 952     httpd_UrlDelete( stream->url );
 953     vlc_mutex_destroy( &stream->lock );
 954     free( stream->psz_mime );
 955     free( stream->p_header );
 956     free( stream->p_buffer );
 957     free( stream );
 958 }
 959
 960 /*****************************************************************************
 961  * Low level
 962  *****************************************************************************/
 963 static void* httpd_HostThread( void * );
 964
 965 /* create a new host */
 966 httpd_host_t *httpd_HostNew( vlc_object_t *p_this, const char *psz_host,
 967                              int i_port )
 968 {
 969     return httpd_TLSHostNew( p_this, psz_host, i_port, NULL, NULL, NULL, NULL
 970                            );
 971 }
 972
 973 static const char psz_object_type[] = "http server";
 974 static vlc_mutex_t httpd_mutex = VLC_STATIC_MUTEX;
 975
 976 httpd_host_t *httpd_TLSHostNew( vlc_object_t *p_this, const char *psz_hostname,
 977                                 int i_port,
 978                                 const char *psz_cert, const char *psz_key,
 979                                 const char *psz_ca, const char *psz_crl )
 980 {
 981     httpd_t      *httpd;
 982     httpd_host_t *host;
 983     tls_server_t *p_tls;
 984     char *psz_host;
 985     vlc_value_t  ptrval;
 986     int i;
 987
 988     if( psz_hostname == NULL )
 989         psz_hostname = "";
 990
 991     psz_host = strdup( psz_hostname );
 992     if( psz_host == NULL )
 993         return NULL;
 994
 995     /* to be sure to avoid multiple creation */
 996     vlc_mutex_lock( &httpd_mutex );
 997     httpd = libvlc_priv (p_this->p_libvlc)->p_httpd;
 998
 999     if( httpd == NULL )
1000     {
1001         msg_Info( p_this, "creating httpd" );
1002         httpd = (httpd_t *)vlc_custom_create( p_this, sizeof (*httpd),
1003                                               VLC_OBJECT_GENERIC,
1004                                               psz_object_type );
1005         if( httpd == NULL )
1006         {
1007             vlc_mutex_unlock( &httpd_mutex );
1008             free( psz_host );
1009             return NULL;
1010         }
1011
1012         httpd->i_host = 0;
1013         httpd->host   = NULL;
1014
1015         ptrval.p_address = httpd;
1016         libvlc_priv (p_this->p_libvlc)->p_httpd = httpd;
1017         vlc_object_attach( httpd, p_this->p_libvlc );
1018     }
1019
1020     /* verify if it already exist */
1021     for( i = httpd->i_host - 1; i >= 0; i-- )
1022     {
1023         host = httpd->host[i];
1024
1025         /* cannot mix TLS and non-TLS hosts */
1026         if( ( ( httpd->host[i]->p_tls != NULL ) != ( psz_cert != NULL ) )
1027          || ( host->i_port != i_port )
1028          || strcmp( host->psz_hostname, psz_hostname ) )
1029             continue;
1030
1031         /* Increase existing matching host reference count.
1032          * The reference count is written under both the global httpd and the
1033          * host lock. It is read with either or both locks held. The global
1034          * lock is always acquired first. */
1035         vlc_mutex_lock( &host->lock );
1036         host->i_ref++;
1037         vlc_mutex_unlock( &host->lock );
1038
1039         vlc_mutex_unlock( &httpd_mutex );
1040         return host;
1041     }
1042
1043     host = NULL;
1044
1045     /* determine TLS configuration */
1046     if ( psz_cert != NULL )
1047     {
1048         p_tls = tls_ServerCreate( p_this, psz_cert, psz_key );
1049         if ( p_tls == NULL )
1050         {
1051             msg_Err( p_this, "TLS initialization error" );
1052             goto error;
1053         }
1054
1055         if ( ( psz_ca != NULL) && tls_ServerAddCA( p_tls, psz_ca ) )
1056         {
1057             msg_Err( p_this, "TLS CA error" );
1058             goto error;
1059         }
1060
1061         if ( ( psz_crl != NULL) && tls_ServerAddCRL( p_tls, psz_crl ) )
1062         {
1063             msg_Err( p_this, "TLS CRL error" );
1064             goto error;
1065         }
1066     }
1067     else
1068         p_tls = NULL;
1069
1070     /* create the new host */
1071     host = (httpd_host_t *)vlc_custom_create( p_this, sizeof (*host),
1072                                               VLC_OBJECT_GENERIC,
1073                                               psz_object_type );
1074     if (host == NULL)
1075         goto error;
1076
1077     host->httpd = httpd;
1078     vlc_mutex_init( &host->lock );
1079     vlc_cond_init( &host->wait );
1080     host->i_ref = 1;
1081
1082     host->fds = net_ListenTCP( p_this, psz_host, i_port );
1083     if( host->fds == NULL )
1084     {
1085         msg_Err( p_this, "cannot create socket(s) for HTTP host" );
1086         goto error;
1087     }
1088     for (host->nfd = 0; host->fds[host->nfd] != -1; host->nfd++);
1089
1090     if( vlc_object_waitpipe( VLC_OBJECT( host ) ) == -1 )
1091     {
1092         msg_Err( host, "signaling pipe error: %m" );
1093         goto error;
1094     }
1095
1096     host->i_port = i_port;
1097     host->psz_hostname = psz_host;
1098
1099     host->i_url     = 0;
1100     host->url       = NULL;
1101     host->i_client  = 0;
1102     host->client    = NULL;
1103
1104     host->p_tls = p_tls;
1105
1106     /* create the thread */
1107     if( vlc_clone( &host->thread, httpd_HostThread, host,
1108                    VLC_THREAD_PRIORITY_LOW ) )
1109     {
1110         msg_Err( p_this, "cannot spawn http host thread" );
1111         goto error;
1112     }
1113
1114     /* now add it to httpd */
1115     TAB_APPEND( httpd->i_host, httpd->host, host );
1116     vlc_mutex_unlock( &httpd_mutex );
1117
1118     return host;
1119
1120 error:
1121     free( psz_host );
1122     if( httpd->i_host <= 0 )
1123     {
1124         libvlc_priv (httpd->p_libvlc)->p_httpd = NULL;
1125         vlc_object_release( httpd );
1126     }
1127     vlc_mutex_unlock( &httpd_mutex );
1128
1129     if( host != NULL )
1130     {
1131         net_ListenClose( host->fds );
1132         vlc_cond_destroy( &host->wait );
1133         vlc_mutex_destroy( &host->lock );
1134         vlc_object_release( host );
1135     }
1136
1137     if( p_tls != NULL )
1138         tls_ServerDelete( p_tls );
1139
1140     return NULL;
1141 }
1142
1143 /* delete a host */
1144 void httpd_HostDelete( httpd_host_t *host )
1145 {
1146     httpd_t *httpd = host->httpd;
1147     int i;
1148     bool delete = false;
1149
1150     vlc_mutex_lock( &httpd_mutex );
1151
1152     vlc_mutex_lock( &host->lock );
1153     host->i_ref--;
1154     if( host->i_ref == 0 )
1155     {
1156         vlc_cond_signal( &host->wait );
1157         delete = true;
1158     }
1159     vlc_mutex_unlock( &host->lock );
1160     if( !delete )
1161     {
1162         /* still used */
1163         vlc_mutex_unlock( &httpd_mutex );
1164         msg_Dbg( host, "httpd_HostDelete: host still in use" );
1165         return;
1166     }
1167     TAB_REMOVE( httpd->i_host, httpd->host, host );
1168
1169     vlc_object_kill( host );
1170     vlc_join( host->thread, NULL );
1171
1172     msg_Dbg( host, "HTTP host removed" );
1173
1174     for( i = 0; i < host->i_url; i++ )
1175     {
1176         msg_Err( host, "url still registered: %s", host->url[i]->psz_url );
1177     }
1178     for( i = 0; i < host->i_client; i++ )
1179     {
1180         httpd_client_t *cl = host->client[i];
1181         msg_Warn( host, "client still connected" );
1182         httpd_ClientClean( cl );
1183         TAB_REMOVE( host->i_client, host->client, cl );
1184         free( cl );
1185         i--;
1186         /* TODO */
1187     }
1188
1189     if( host->p_tls != NULL)
1190         tls_ServerDelete( host->p_tls );
1191
1192     net_ListenClose( host->fds );
1193     free( host->psz_hostname );
1194
1195     vlc_cond_destroy( &host->wait );
1196     vlc_mutex_destroy( &host->lock );
1197     vlc_object_release( host );
1198
1199     if( httpd->i_host <= 0 )
1200     {
1201         msg_Dbg( httpd, "no hosts left, stopping httpd" );
1202
1203         libvlc_priv (httpd->p_libvlc)->p_httpd = NULL;
1204         vlc_object_release( httpd );
1205     }
1206     vlc_mutex_unlock( &httpd_mutex );
1207 }
1208
1209 /* register a new url */
1210 static httpd_url_t *httpd_UrlNewPrivate( httpd_host_t *host, const char *psz_url,
1211                                          const char *psz_user, const char *psz_password,
1212                                          const vlc_acl_t *p_acl, bool b_check )
1213 {
1214     httpd_url_t *url;
1215     int         i;
1216
1217     assert( psz_url != NULL );
1218
1219     vlc_mutex_lock( &host->lock );
1220     if( b_check )
1221     {
1222         for( i = 0; i < host->i_url; i++ )
1223         {
1224             if( !strcmp( psz_url, host->url[i]->psz_url ) )
1225             {
1226                 msg_Warn( host->httpd,
1227                           "cannot add '%s' (url already defined)", psz_url );
1228                 vlc_mutex_unlock( &host->lock );
1229                 return NULL;
1230             }
1231         }
1232     }
1233
1234     url = xmalloc( sizeof( httpd_url_t ) );
1235     url->host = host;
1236
1237     vlc_mutex_init( &url->lock );
1238     url->psz_url = strdup( psz_url );
1239     url->psz_user = strdup( psz_user ? psz_user : "" );
1240     url->psz_password = strdup( psz_password ? psz_password : "" );
1241     url->p_acl = ACL_Duplicate( host, p_acl );
1242     for( i = 0; i < HTTPD_MSG_MAX; i++ )
1243     {
1244         url->catch[i].cb = NULL;
1245         url->catch[i].p_sys = NULL;
1246     }
1247
1248     TAB_APPEND( host->i_url, host->url, url );
1249     vlc_cond_signal( &host->wait );
1250     vlc_mutex_unlock( &host->lock );
1251
1252     return url;
1253 }
1254
1255 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
1256                            const char *psz_user, const char *psz_password,
1257                            const vlc_acl_t *p_acl )
1258 {
1259     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1260                                 psz_password, p_acl, false );
1261 }
1262
1263 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
1264                                  const char *psz_user, const char *psz_password,
1265                                  const vlc_acl_t *p_acl )
1266 {
1267     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1268                                 psz_password, p_acl, true );
1269 }
1270
1271 /* register callback on a url */
1272 int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
1273                     httpd_callback_sys_t *p_sys )
1274 {
1275     vlc_mutex_lock( &url->lock );
1276     url->catch[i_msg].cb   = cb;
1277     url->catch[i_msg].p_sys= p_sys;
1278     vlc_mutex_unlock( &url->lock );
1279
1280     return VLC_SUCCESS;
1281 }
1282
1283 /* delete an url */
1284 void httpd_UrlDelete( httpd_url_t *url )
1285 {
1286     httpd_host_t *host = url->host;
1287     int          i;
1288
1289     vlc_mutex_lock( &host->lock );
1290     TAB_REMOVE( host->i_url, host->url, url );
1291
1292     vlc_mutex_destroy( &url->lock );
1293     free( url->psz_url );
1294     free( url->psz_user );
1295     free( url->psz_password );
1296     ACL_Destroy( url->p_acl );
1297
1298     for( i = 0; i < host->i_client; i++ )
1299     {
1300         httpd_client_t *client = host->client[i];
1301
1302         if( client->url == url )
1303         {
1304             /* TODO complete it */
1305             msg_Warn( host, "force closing connections" );
1306             httpd_ClientClean( client );
1307             TAB_REMOVE( host->i_client, host->client, client );
1308             free( client );
1309             i--;
1310         }
1311     }
1312     free( url );
1313     vlc_mutex_unlock( &host->lock );
1314 }
1315
1316 static void httpd_MsgInit( httpd_message_t *msg )
1317 {
1318     msg->cl         = NULL;
1319     msg->i_type     = HTTPD_MSG_NONE;
1320     msg->i_proto    = HTTPD_PROTO_NONE;
1321     msg->i_version  = -1; /* FIXME */
1322
1323     msg->i_status   = 0;
1324
1325     msg->psz_url    = NULL;
1326     msg->psz_args   = NULL;
1327
1328     msg->i_channel  = -1;
1329
1330     msg->i_name     = 0;
1331     msg->name       = NULL;
1332     msg->i_value    = 0;
1333     msg->value      = NULL;
1334
1335     msg->i_body_offset = 0;
1336     msg->i_body        = 0;
1337     msg->p_body        = NULL;
1338 }
1339
1340 static void httpd_MsgClean( httpd_message_t *msg )
1341 {
1342     int i;
1343
1344     free( msg->psz_url );
1345     free( msg->psz_args );
1346     for( i = 0; i < msg->i_name; i++ )
1347     {
1348         free( msg->name[i] );
1349         free( msg->value[i] );
1350     }
1351     free( msg->name );
1352     free( msg->value );
1353     free( msg->p_body );
1354     httpd_MsgInit( msg );
1355 }
1356
1357 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
1358 {
1359     int i;
1360
1361     for( i = 0; i < msg->i_name; i++ )
1362     {
1363         if( !strcasecmp( msg->name[i], name ))
1364         {
1365             return msg->value[i];
1366         }
1367     }
1368     return NULL;
1369 }
1370
1371 void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
1372 {
1373     va_list args;
1374     char *value = NULL;
1375
1376     va_start( args, psz_value );
1377     if( vasprintf( &value, psz_value, args ) == -1 )
1378         value = NULL;
1379     va_end( args );
1380
1381     if( value == NULL )
1382         return;
1383
1384     name = strdup( name );
1385     if( name == NULL )
1386     {
1387         free( value );
1388         return;
1389     }
1390
1391     TAB_APPEND( msg->i_name,  msg->name,  (char*)name );
1392     TAB_APPEND( msg->i_value, msg->value, value );
1393 }
1394
1395 static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
1396 {
1397     cl->i_state = HTTPD_CLIENT_RECEIVING;
1398     cl->i_activity_date = now;
1399     cl->i_activity_timeout = INT64_C(10000000);
1400     cl->i_buffer_size = HTTPD_CL_BUFSIZE;
1401     cl->i_buffer = 0;
1402     cl->p_buffer = xmalloc( cl->i_buffer_size );
1403     cl->i_mode   = HTTPD_CLIENT_FILE;
1404     cl->b_read_waiting = false;
1405
1406     httpd_MsgInit( &cl->query );
1407     httpd_MsgInit( &cl->answer );
1408 }
1409
1410 void httpd_ClientModeStream( httpd_client_t *cl )
1411 {
1412     cl->i_mode   = HTTPD_CLIENT_STREAM;
1413 }
1414
1415 void httpd_ClientModeBidir( httpd_client_t *cl )
1416 {
1417     cl->i_mode   = HTTPD_CLIENT_BIDIR;
1418 }
1419
1420 char* httpd_ClientIP( const httpd_client_t *cl, char *psz_ip )
1421 {
1422     return net_GetPeerAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1423 }
1424
1425 char* httpd_ServerIP( const httpd_client_t *cl, char *psz_ip )
1426 {
1427     return net_GetSockAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1428 }
1429
1430 static void httpd_ClientClean( httpd_client_t *cl )
1431 {
1432     if( cl->fd >= 0 )
1433     {
1434         if( cl->p_tls != NULL )
1435             tls_ServerSessionClose( cl->p_tls );
1436         net_Close( cl->fd );
1437         cl->fd = -1;
1438     }
1439
1440     httpd_MsgClean( &cl->answer );
1441     httpd_MsgClean( &cl->query );
1442
1443     free( cl->p_buffer );
1444     cl->p_buffer = NULL;
1445 }
1446
1447 static httpd_client_t *httpd_ClientNew( int fd, tls_session_t *p_tls, mtime_t now )
1448 {
1449     httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
1450
1451     if( !cl ) return NULL;
1452
1453     cl->i_ref   = 0;
1454     cl->fd      = fd;
1455     cl->url     = NULL;
1456     cl->p_tls = p_tls;
1457
1458     httpd_ClientInit( cl, now );
1459
1460     return cl;
1461 }
1462
1463 static
1464 ssize_t httpd_NetRecv (httpd_client_t *cl, uint8_t *p, size_t i_len)
1465 {
1466     tls_session_t *p_tls;
1467     ssize_t val;
1468
1469     p_tls = cl->p_tls;
1470     do
1471         val = p_tls ? tls_Recv (p_tls, p, i_len)
1472                     : recv (cl->fd, p, i_len, 0);
1473     while (val == -1 && errno == EINTR);
1474     return val;
1475 }
1476
1477 static
1478 ssize_t httpd_NetSend (httpd_client_t *cl, const uint8_t *p, size_t i_len)
1479 {
1480     tls_session_t *p_tls;
1481     ssize_t val;
1482
1483     p_tls = cl->p_tls;
1484     do
1485         val = p_tls ? tls_Send( p_tls, p, i_len )
1486                     : send (cl->fd, p, i_len, 0);
1487     while (val == -1 && errno == EINTR);
1488     return val;
1489 }
1490
1491
1492 static const struct
1493 {
1494     const char name[16];
1495     int  i_type;
1496     int  i_proto;
1497 }
1498 msg_type[] =
1499 {
1500     { "OPTIONS",       HTTPD_MSG_OPTIONS,      HTTPD_PROTO_RTSP },
1501     { "DESCRIBE",      HTTPD_MSG_DESCRIBE,     HTTPD_PROTO_RTSP },
1502     { "SETUP",         HTTPD_MSG_SETUP,        HTTPD_PROTO_RTSP },
1503     { "PLAY",          HTTPD_MSG_PLAY,         HTTPD_PROTO_RTSP },
1504     { "PAUSE",         HTTPD_MSG_PAUSE,        HTTPD_PROTO_RTSP },
1505     { "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
1506     { "TEARDOWN",      HTTPD_MSG_TEARDOWN,     HTTPD_PROTO_RTSP },
1507     { "GET",           HTTPD_MSG_GET,          HTTPD_PROTO_HTTP },
1508     { "HEAD",          HTTPD_MSG_HEAD,         HTTPD_PROTO_HTTP },
1509     { "POST",          HTTPD_MSG_POST,         HTTPD_PROTO_HTTP },
1510     { "",              HTTPD_MSG_NONE,         HTTPD_PROTO_NONE }
1511 };
1512
1513
1514 static void httpd_ClientRecv( httpd_client_t *cl )
1515 {
1516     int i_len;
1517
1518     /* ignore leading whites */
1519     if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
1520         ( cl->i_buffer == 0 ) )
1521     {
1522         unsigned char c;
1523
1524         i_len = httpd_NetRecv( cl, &c, 1 );
1525
1526         if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
1527         {
1528             cl->p_buffer[0] = c;
1529             cl->i_buffer++;
1530         }
1531     }
1532     else
1533     if( cl->query.i_proto == HTTPD_PROTO_NONE )
1534     {
1535         /* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
1536         i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
1537                                7 - cl->i_buffer );
1538         if( i_len > 0 )
1539         {
1540             cl->i_buffer += i_len;
1541         }
1542
1543         if( ( cl->i_buffer >= 4 ) && ( cl->p_buffer[0] == '$' ) )
1544         {
1545             /* Interleaved RTP over RTSP */
1546             cl->query.i_proto = HTTPD_PROTO_RTSP;
1547             cl->query.i_type  = HTTPD_MSG_CHANNEL;
1548             cl->query.i_channel = cl->p_buffer[1];
1549             cl->query.i_body  = (cl->p_buffer[2] << 8)|cl->p_buffer[3];
1550             cl->query.p_body  = xmalloc( cl->query.i_body );
1551             cl->i_buffer      -= 4;
1552             memcpy( cl->query.p_body, cl->p_buffer + 4, cl->i_buffer );
1553         }
1554         else
1555         /* The smallest legal request is 7 bytes ("GET /\r\n"),
1556          * this is the maximum we can ask at this point. */
1557         if( cl->i_buffer >= 7 )
1558         {
1559             if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
1560             {
1561                 cl->query.i_proto = HTTPD_PROTO_HTTP;
1562                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1563             }
1564             else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
1565             {
1566                 cl->query.i_proto = HTTPD_PROTO_RTSP;
1567                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1568             }
1569             else
1570             {
1571                 /* We need the full request line to determine the protocol. */
1572                 cl->query.i_proto = HTTPD_PROTO_HTTP0;
1573                 cl->query.i_type  = HTTPD_MSG_NONE;
1574             }
1575         }
1576     }
1577     else if( cl->query.i_body > 0 )
1578     {
1579         /* we are reading the body of a request or a channel */
1580         i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
1581                                cl->query.i_body - cl->i_buffer );
1582         if( i_len > 0 )
1583         {
1584             cl->i_buffer += i_len;
1585         }
1586         if( cl->i_buffer >= cl->query.i_body )
1587         {
1588             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1589         }
1590     }
1591     else
1592     {
1593         /* we are reading a header -> char by char */
1594         for( ;; )
1595         {
1596             if( cl->i_buffer == cl->i_buffer_size )
1597             {
1598                 uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
1599                 if( newbuf == NULL )
1600                 {
1601                     i_len = 0;
1602                     break;
1603                 }
1604
1605                 cl->p_buffer = newbuf;
1606                 cl->i_buffer_size += 1024;
1607             }
1608
1609             i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
1610             if( i_len <= 0 )
1611             {
1612                 break;
1613             }
1614             cl->i_buffer++;
1615
1616             if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
1617              && ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
1618             {
1619                 /* Request line is now complete */
1620                 const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
1621                 size_t len;
1622
1623                 assert( cl->query.i_type == HTTPD_MSG_NONE );
1624
1625                 if( p == NULL ) /* no URI: evil guy */
1626                 {
1627                     i_len = 0; /* drop connection */
1628                     break;
1629                 }
1630
1631                 do
1632                     p++; /* skips extra spaces */
1633                 while( *p == ' ' );
1634
1635                 p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
1636                 if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
1637                 {
1638                     i_len = 0; /* not supported currently -> drop */
1639                     break;
1640                 }
1641
1642                 do
1643                     p++; /* skips extra spaces ever again */
1644                 while( *p == ' ' );
1645
1646                 len = ((char *)cl->p_buffer) + cl->i_buffer - p;
1647                 if( len < 7 ) /* foreign protocol */
1648                     i_len = 0; /* I don't understand -> drop */
1649                 else
1650                 if( memcmp( p, "HTTP/1.", 7 ) == 0 )
1651                 {
1652                     cl->query.i_proto = HTTPD_PROTO_HTTP;
1653                     cl->query.i_version = atoi( p + 7 );
1654                 }
1655                 else
1656                 if( memcmp( p, "RTSP/1.", 7 ) == 0 )
1657                 {
1658                     cl->query.i_proto = HTTPD_PROTO_RTSP;
1659                     cl->query.i_version = atoi( p + 7 );
1660                 }
1661                 else
1662                 if( memcmp( p, "HTTP/", 5 ) == 0 )
1663                 {
1664                     const uint8_t sorry[] =
1665                        "HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
1666                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1667                     i_len = 0; /* drop */
1668                 }
1669                 else
1670                 if( memcmp( p, "RTSP/", 5 ) == 0 )
1671                 {
1672                     const uint8_t sorry[] =
1673                         "RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
1674                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1675                     i_len = 0; /* drop */
1676                 }
1677                 else /* yet another foreign protocol */
1678                     i_len = 0;
1679
1680                 if( i_len == 0 )
1681                     break;
1682             }
1683
1684             if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
1685                 ( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
1686             {
1687                 char *p;
1688
1689                 /* we have finished the header so parse it and set i_body */
1690                 cl->p_buffer[cl->i_buffer] = '\0';
1691
1692                 if( cl->query.i_type == HTTPD_MSG_ANSWER )
1693                 {
1694                     /* FIXME:
1695                      * assume strlen( "HTTP/1.x" ) = 8
1696                      */
1697                     cl->query.i_status =
1698                         strtol( (char *)&cl->p_buffer[8],
1699                                 &p, 0 );
1700                     while( *p == ' ' )
1701                         p++;
1702                 }
1703                 else
1704                 {
1705                     unsigned i;
1706
1707                     p = NULL;
1708                     cl->query.i_type = HTTPD_MSG_NONE;
1709
1710                     /*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
1711
1712                     for( i = 0; msg_type[i].name[0]; i++ )
1713                     {
1714                         if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
1715                                       strlen( msg_type[i].name ) ) )
1716                         {
1717                             p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
1718                             cl->query.i_type = msg_type[i].i_type;
1719                             if( cl->query.i_proto != msg_type[i].i_proto )
1720                             {
1721                                 p = NULL;
1722                                 cl->query.i_proto = HTTPD_PROTO_NONE;
1723                                 cl->query.i_type = HTTPD_MSG_NONE;
1724                             }
1725                             break;
1726                         }
1727                     }
1728                     if( p == NULL )
1729                     {
1730                         if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
1731                         {
1732                             cl->query.i_proto = HTTPD_PROTO_HTTP;
1733                         }
1734                         else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
1735                         {
1736                             cl->query.i_proto = HTTPD_PROTO_RTSP;
1737                         }
1738                     }
1739                     else
1740                     {
1741                         char *p2;
1742                         char *p3;
1743
1744                         while( *p == ' ' )
1745                         {
1746                             p++;
1747                         }
1748                         p2 = strchr( p, ' ' );
1749                         if( p2 )
1750                         {
1751                             *p2++ = '\0';
1752                         }
1753                         if( !strncasecmp( p, ( cl->query.i_proto
1754                                    == HTTPD_PROTO_HTTP ) ? "http" : "rtsp", 4 )
1755                          && p[4 + !!strchr( "sS", p[4] )] == ':' )
1756                         {   /* Skip hier-part of URL (if present) */
1757                             p = strchr( p, ':' ) + 1; /* skip URI scheme */
1758                             if( !strncmp( p, "//", 2 ) ) /* skip authority */
1759                             {   /* see RFC3986 §3.2 */
1760                                 p += 2;
1761                                 while( *p && !strchr( "/?#", *p ) ) p++;
1762                             }
1763                         }
1764                         cl->query.psz_url = strdup( p );
1765                         if( ( p3 = strchr( cl->query.psz_url, '?' ) )  )
1766                         {
1767                             *p3++ = '\0';
1768                             cl->query.psz_args = (uint8_t *)strdup( p3 );
1769                         }
1770                         p = p2;
1771                     }
1772                 }
1773                 if( p )
1774                 {
1775                     p = strchr( p, '\n' );
1776                 }
1777                 if( p )
1778                 {
1779                     while( *p == '\n' || *p == '\r' )
1780                     {
1781                         p++;
1782                     }
1783                     while( p && *p != '\0' )
1784                     {
1785                         char *line = p;
1786                         char *eol = p = strchr( p, '\n' );
1787                         char *colon;
1788
1789                         while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
1790                         {
1791                             *eol-- = '\0';
1792                         }
1793
1794                         if( ( colon = strchr( line, ':' ) ) )
1795                         {
1796                             char *name;
1797                             char *value;
1798
1799                             *colon++ = '\0';
1800                             while( *colon == ' ' )
1801                             {
1802                                 colon++;
1803                             }
1804                             name = strdup( line );
1805                             value = strdup( colon );
1806
1807                             TAB_APPEND( cl->query.i_name, cl->query.name, name );
1808                             TAB_APPEND( cl->query.i_value,cl->query.value,value);
1809
1810                             if( !strcasecmp( name, "Content-Length" ) )
1811                             {
1812                                 cl->query.i_body = atol( value );
1813                             }
1814                         }
1815
1816                         if( p )
1817                         {
1818                             p++;
1819                             while( *p == '\n' || *p == '\r' )
1820                             {
1821                                 p++;
1822                             }
1823                         }
1824                     }
1825                 }
1826                 if( cl->query.i_body > 0 )
1827                 {
1828                     /* TODO Mhh, handle the case client will only send a
1829                      * request and close the connection
1830                      * to mark and of body (probably only RTSP) */
1831                     cl->query.p_body = xmalloc( cl->query.i_body );
1832                     cl->i_buffer = 0;
1833                 }
1834                 else
1835                 {
1836                     cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1837                 }
1838             }
1839         }
1840     }
1841
1842     /* check if the client is to be set to dead */
1843 #if defined( WIN32 ) || defined( UNDER_CE )
1844     if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1845 #else
1846     if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1847 #endif
1848     {
1849         if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
1850         {
1851             /* connection closed -> end of data */
1852             if( cl->query.i_body > 0 )
1853             {
1854                 cl->query.i_body = cl->i_buffer;
1855             }
1856             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1857         }
1858         else
1859         {
1860             cl->i_state = HTTPD_CLIENT_DEAD;
1861         }
1862     }
1863
1864     /* XXX: for QT I have to disable timeout. Try to find why */
1865     if( cl->query.i_proto == HTTPD_PROTO_RTSP )
1866         cl->i_activity_timeout = 0;
1867
1868 #if 0 /* Debugging only */
1869     if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
1870     {
1871         int i;
1872
1873         fprintf( stderr, "received new request\n" );
1874         fprintf( stderr, "  - proto=%s\n",
1875                  cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
1876         fprintf( stderr, "  - version=%d\n", cl->query.i_version );
1877         fprintf( stderr, "  - msg=%d\n", cl->query.i_type );
1878         if( cl->query.i_type == HTTPD_MSG_ANSWER )
1879         {
1880             fprintf( stderr, "  - answer=%d '%s'\n", cl->query.i_status,
1881                      cl->query.psz_status );
1882         }
1883         else if( cl->query.i_type != HTTPD_MSG_NONE )
1884         {
1885             fprintf( stderr, "  - url=%s\n", cl->query.psz_url );
1886         }
1887         for( i = 0; i < cl->query.i_name; i++ )
1888         {
1889             fprintf( stderr, "  - option name='%s' value='%s'\n",
1890                      cl->query.name[i], cl->query.value[i] );
1891         }
1892     }
1893 #endif
1894 }
1895
1896 static void httpd_ClientSend( httpd_client_t *cl )
1897 {
1898     int i;
1899     int i_len;
1900
1901     if( cl->i_buffer < 0 )
1902     {
1903         /* We need to create the header */
1904         int i_size = 0;
1905         char *p;
1906         const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
1907
1908         i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
1909         for( i = 0; i < cl->answer.i_name; i++ )
1910         {
1911             i_size += strlen( cl->answer.name[i] ) + 2 +
1912                       strlen( cl->answer.value[i] ) + 2;
1913         }
1914
1915         if( cl->i_buffer_size < i_size )
1916         {
1917             cl->i_buffer_size = i_size;
1918             free( cl->p_buffer );
1919             cl->p_buffer = xmalloc( i_size );
1920         }
1921         p = (char *)cl->p_buffer;
1922
1923         p += sprintf( p, "%s.%u %d %s\r\n",
1924                       cl->answer.i_proto ==  HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
1925                       cl->answer.i_version,
1926                       cl->answer.i_status, psz_status );
1927         for( i = 0; i < cl->answer.i_name; i++ )
1928         {
1929             p += sprintf( p, "%s: %s\r\n", cl->answer.name[i],
1930                           cl->answer.value[i] );
1931         }
1932         p += sprintf( p, "\r\n" );
1933
1934         cl->i_buffer = 0;
1935         cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
1936
1937         /*fprintf( stderr, "sending answer\n" );
1938         fprintf( stderr, "%s",  cl->p_buffer );*/
1939     }
1940
1941     i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
1942                            cl->i_buffer_size - cl->i_buffer );
1943     if( i_len >= 0 )
1944     {
1945         cl->i_buffer += i_len;
1946
1947         if( cl->i_buffer >= cl->i_buffer_size )
1948         {
1949             if( cl->answer.i_body == 0  && cl->answer.i_body_offset > 0 &&
1950                 !cl->b_read_waiting )
1951             {
1952                 /* catch more body data */
1953                 int     i_msg = cl->query.i_type;
1954                 int64_t i_offset = cl->answer.i_body_offset;
1955
1956                 httpd_MsgClean( &cl->answer );
1957                 cl->answer.i_body_offset = i_offset;
1958
1959                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
1960                                           &cl->answer, &cl->query );
1961             }
1962
1963             if( cl->answer.i_body > 0 )
1964             {
1965                 /* send the body data */
1966                 free( cl->p_buffer );
1967                 cl->p_buffer = cl->answer.p_body;
1968                 cl->i_buffer_size = cl->answer.i_body;
1969                 cl->i_buffer = 0;
1970
1971                 cl->answer.i_body = 0;
1972                 cl->answer.p_body = NULL;
1973             }
1974             else
1975             {
1976                 /* send finished */
1977                 cl->i_state = HTTPD_CLIENT_SEND_DONE;
1978             }
1979         }
1980     }
1981     else
1982     {
1983 #if defined( WIN32 ) || defined( UNDER_CE )
1984         if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1985 #else
1986         if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1987 #endif
1988         {
1989             /* error */
1990             cl->i_state = HTTPD_CLIENT_DEAD;
1991         }
1992     }
1993 }
1994
1995 static void httpd_ClientTlsHsIn( httpd_client_t *cl )
1996 {
1997     switch( tls_SessionContinueHandshake( cl->p_tls ) )
1998     {
1999         case 0:
2000             cl->i_state = HTTPD_CLIENT_RECEIVING;
2001             break;
2002
2003         case -1:
2004             cl->i_state = HTTPD_CLIENT_DEAD;
2005             cl->p_tls = NULL;
2006             break;
2007
2008         case 2:
2009             cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
2010     }
2011 }
2012
2013 static void httpd_ClientTlsHsOut( httpd_client_t *cl )
2014 {
2015     switch( tls_SessionContinueHandshake( cl->p_tls ) )
2016     {
2017         case 0:
2018             cl->i_state = HTTPD_CLIENT_RECEIVING;
2019             break;
2020
2021         case -1:
2022             cl->i_state = HTTPD_CLIENT_DEAD;
2023             cl->p_tls = NULL;
2024             break;
2025
2026         case 1:
2027             cl->i_state = HTTPD_CLIENT_TLS_HS_IN;
2028             break;
2029     }
2030 }
2031
2032 static void* httpd_HostThread( void *data )
2033 {
2034     httpd_host_t *host = data;
2035     tls_session_t *p_tls = NULL;
2036     counter_t *p_total_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2037     counter_t *p_active_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2038     int evfd = vlc_object_waitpipe( VLC_OBJECT( host ) );
2039
2040     for( ;; )
2041     {
2042         /* prepare a new TLS session */
2043         if( ( p_tls == NULL ) && ( host->p_tls != NULL ) )
2044             p_tls = tls_ServerSessionPrepare( host->p_tls );
2045
2046         struct pollfd ufd[host->nfd + host->i_client + 1];
2047         unsigned nfd;
2048         for( nfd = 0; nfd < host->nfd; nfd++ )
2049         {
2050             ufd[nfd].fd = host->fds[nfd];
2051             ufd[nfd].events = POLLIN;
2052             ufd[nfd].revents = 0;
2053         }
2054
2055         /* add all socket that should be read/write and close dead connection */
2056         vlc_mutex_lock( &host->lock );
2057         while( host->i_url <= 0 && host->i_ref > 0 )
2058             vlc_cond_wait( &host->wait, &host->lock );
2059
2060         mtime_t now = mdate();
2061         bool b_low_delay = false;
2062
2063         for(int i_client = 0; i_client < host->i_client; i_client++ )
2064         {
2065             httpd_client_t *cl = host->client[i_client];
2066             if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
2067                 ( cl->i_state == HTTPD_CLIENT_DEAD ||
2068                   ( cl->i_activity_timeout > 0 &&
2069                     cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
2070             {
2071                 httpd_ClientClean( cl );
2072                 stats_UpdateInteger( host, p_active_counter, -1, NULL );
2073                 TAB_REMOVE( host->i_client, host->client, cl );
2074                 free( cl );
2075                 i_client--;
2076                 continue;
2077             }
2078
2079             struct pollfd *pufd = ufd + nfd;
2080             assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
2081
2082             pufd->fd = cl->fd;
2083             pufd->events = pufd->revents = 0;
2084
2085             if( ( cl->i_state == HTTPD_CLIENT_RECEIVING )
2086                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_IN ) )
2087             {
2088                 pufd->events = POLLIN;
2089             }
2090             else if( ( cl->i_state == HTTPD_CLIENT_SENDING )
2091                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT ) )
2092             {
2093                 pufd->events = POLLOUT;
2094             }
2095             else if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
2096             {
2097                 httpd_message_t *answer = &cl->answer;
2098                 httpd_message_t *query  = &cl->query;
2099                 int i_msg = query->i_type;
2100
2101                 httpd_MsgInit( answer );
2102
2103                 /* Handle what we received */
2104                 if( (cl->i_mode != HTTPD_CLIENT_BIDIR) &&
2105                     (i_msg == HTTPD_MSG_ANSWER || i_msg == HTTPD_MSG_CHANNEL) )
2106                 {
2107                     /* we can only receive request from client when not
2108                      * in BIDIR mode */
2109                     cl->url     = NULL;
2110                     cl->i_state = HTTPD_CLIENT_DEAD;
2111                 }
2112                 else if( i_msg == HTTPD_MSG_ANSWER )
2113                 {
2114                     /* We are in BIDIR mode, trigger the callback and then
2115                      * check for new data */
2116                     if( cl->url && cl->url->catch[i_msg].cb )
2117                     {
2118                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2119                                                   cl, NULL, query );
2120                     }
2121                     cl->i_state = HTTPD_CLIENT_WAITING;
2122                 }
2123                 else if( i_msg == HTTPD_MSG_CHANNEL )
2124                 {
2125                     /* We are in BIDIR mode, trigger the callback and then
2126                      * check for new data */
2127                     if( cl->url && cl->url->catch[i_msg].cb )
2128                     {
2129                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2130                                                   cl, NULL, query );
2131                     }
2132                     cl->i_state = HTTPD_CLIENT_WAITING;
2133                 }
2134                 else if( i_msg == HTTPD_MSG_OPTIONS )
2135                 {
2136
2137                     answer->i_type   = HTTPD_MSG_ANSWER;
2138                     answer->i_proto  = query->i_proto;
2139                     answer->i_status = 200;
2140                     answer->i_body = 0;
2141                     answer->p_body = NULL;
2142
2143                     httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
2144                     httpd_MsgAdd( answer, "Content-Length", "0" );
2145
2146                     switch( query->i_proto )
2147                     {
2148                         case HTTPD_PROTO_HTTP:
2149                             answer->i_version = 1;
2150                             httpd_MsgAdd( answer, "Allow",
2151                                           "GET,HEAD,POST,OPTIONS" );
2152                             break;
2153
2154                         case HTTPD_PROTO_RTSP:
2155                         {
2156                             const char *p;
2157                             answer->i_version = 0;
2158
2159                             p = httpd_MsgGet( query, "Cseq" );
2160                             if( p != NULL )
2161                                 httpd_MsgAdd( answer, "Cseq", "%s", p );
2162                             p = httpd_MsgGet( query, "Timestamp" );
2163                             if( p != NULL )
2164                                 httpd_MsgAdd( answer, "Timestamp", "%s", p );
2165
2166                             p = httpd_MsgGet( query, "Require" );
2167                             if( p != NULL )
2168                             {
2169                                 answer->i_status = 551;
2170                                 httpd_MsgAdd( query, "Unsupported", "%s", p );
2171                             }
2172
2173                             httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
2174                                           "TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
2175                             break;
2176                         }
2177                     }
2178
2179                     cl->i_buffer = -1;  /* Force the creation of the answer in
2180                                          * httpd_ClientSend */
2181                     cl->i_state = HTTPD_CLIENT_SENDING;
2182                 }
2183                 else if( i_msg == HTTPD_MSG_NONE )
2184                 {
2185                     if( query->i_proto == HTTPD_PROTO_NONE )
2186                     {
2187                         cl->url = NULL;
2188                         cl->i_state = HTTPD_CLIENT_DEAD;
2189                     }
2190                     else
2191                     {
2192                         char *p;
2193
2194                         /* unimplemented */
2195                         answer->i_proto  = query->i_proto ;
2196                         answer->i_type   = HTTPD_MSG_ANSWER;
2197                         answer->i_version= 0;
2198                         answer->i_status = 501;
2199
2200                         answer->i_body = httpd_HtmlError (&p, 501, NULL);
2201                         answer->p_body = (uint8_t *)p;
2202                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2203
2204                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2205                         cl->i_state = HTTPD_CLIENT_SENDING;
2206                     }
2207                 }
2208                 else
2209                 {
2210                     bool b_auth_failed = false;
2211                     bool b_hosts_failed = false;
2212
2213                     /* Search the url and trigger callbacks */
2214                     for(int i = 0; i < host->i_url; i++ )
2215                     {
2216                         httpd_url_t *url = host->url[i];
2217
2218                         if( !strcmp( url->psz_url, query->psz_url ) )
2219                         {
2220                             if( url->catch[i_msg].cb )
2221                             {
2222                                 if( answer && ( url->p_acl != NULL ) )
2223                                 {
2224                                     char ip[NI_MAXNUMERICHOST];
2225
2226                                     if( ( httpd_ClientIP( cl, ip ) == NULL )
2227                                      || ACL_Check( url->p_acl, ip ) )
2228                                     {
2229                                         b_hosts_failed = true;
2230                                         break;
2231                                     }
2232                                 }
2233
2234                                 if( answer && ( *url->psz_user || *url->psz_password ) )
2235                                 {
2236                                     /* create the headers */
2237                                     const char *b64 = httpd_MsgGet( query, "Authorization" ); /* BASIC id */
2238                                     char *user = NULL, *pass = NULL;
2239
2240                                     if( b64 != NULL
2241                                      && !strncasecmp( b64, "BASIC", 5 ) )
2242                                     {
2243                                         b64 += 5;
2244                                         while( *b64 == ' ' )
2245                                             b64++;
2246
2247                                         user = vlc_b64_decode( b64 );
2248                                         if (user != NULL)
2249                                         {
2250                                             pass = strchr (user, ':');
2251                                             if (pass != NULL)
2252                                                 *pass++ = '\0';
2253                                         }
2254                                     }
2255
2256                                     if ((user == NULL) || (pass == NULL)
2257                                      || strcmp (user, url->psz_user)
2258                                      || strcmp (pass, url->psz_password))
2259                                     {
2260                                         httpd_MsgAdd( answer,
2261                                                       "WWW-Authenticate",
2262                                                       "Basic realm=\"VLC stream\"" );
2263                                         /* We fail for all url */
2264                                         b_auth_failed = true;
2265                                         free( user );
2266                                         break;
2267                                     }
2268
2269                                     free( user );
2270                                 }
2271
2272                                 if( !url->catch[i_msg].cb( url->catch[i_msg].p_sys, cl, answer, query ) )
2273                                 {
2274                                     if( answer->i_proto == HTTPD_PROTO_NONE )
2275                                     {
2276                                         /* Raw answer from a CGI */
2277                                         cl->i_buffer = cl->i_buffer_size;
2278                                     }
2279                                     else
2280                                         cl->i_buffer = -1;
2281
2282                                     /* only one url can answer */
2283                                     answer = NULL;
2284                                     if( cl->url == NULL )
2285                                     {
2286                                         cl->url = url;
2287                                     }
2288                                 }
2289                             }
2290                         }
2291                     }
2292
2293                     if( answer )
2294                     {
2295                         char *p;
2296
2297                         answer->i_proto  = query->i_proto;
2298                         answer->i_type   = HTTPD_MSG_ANSWER;
2299                         answer->i_version= 0;
2300
2301                         if( b_hosts_failed )
2302                         {
2303                             answer->i_status = 403;
2304                         }
2305                         else if( b_auth_failed )
2306                         {
2307                             answer->i_status = 401;
2308                         }
2309                         else
2310                         {
2311                             /* no url registered */
2312                             answer->i_status = 404;
2313                         }
2314
2315                         answer->i_body = httpd_HtmlError (&p,
2316                                                           answer->i_status,
2317                                                           query->psz_url);
2318                         answer->p_body = (uint8_t *)p;
2319
2320                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2321                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2322                         httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
2323                     }
2324
2325                     cl->i_state = HTTPD_CLIENT_SENDING;
2326                 }
2327             }
2328             else if( cl->i_state == HTTPD_CLIENT_SEND_DONE )
2329             {
2330                 if( cl->i_mode == HTTPD_CLIENT_FILE || cl->answer.i_body_offset == 0 )
2331                 {
2332                     const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
2333                     const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
2334                     bool b_connection = false;
2335                     bool b_keepalive = false;
2336                     bool b_query = false;
2337
2338                     cl->url = NULL;
2339                     if( psz_connection )
2340                     {
2341                         b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
2342                         b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
2343                     }
2344
2345                     if( psz_query )
2346                     {
2347                         b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
2348                     }
2349
2350                     if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
2351                           ( ( cl->query.i_version == 0 && b_keepalive ) ||
2352                             ( cl->query.i_version == 1 && !b_connection ) ) ) ||
2353                         ( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
2354                           !b_query && !b_connection ) )
2355                     {
2356                         httpd_MsgClean( &cl->query );
2357                         httpd_MsgInit( &cl->query );
2358
2359                         cl->i_buffer = 0;
2360                         cl->i_buffer_size = 1000;
2361                         free( cl->p_buffer );
2362                         cl->p_buffer = xmalloc( cl->i_buffer_size );
2363                         cl->i_state = HTTPD_CLIENT_RECEIVING;
2364                     }
2365                     else
2366                     {
2367                         cl->i_state = HTTPD_CLIENT_DEAD;
2368                     }
2369                     httpd_MsgClean( &cl->answer );
2370                 }
2371                 else if( cl->b_read_waiting )
2372                 {
2373                     /* we have a message waiting for us to read it */
2374                     httpd_MsgClean( &cl->answer );
2375                     httpd_MsgClean( &cl->query );
2376
2377                     cl->i_buffer = 0;
2378                     cl->i_buffer_size = 1000;
2379                     free( cl->p_buffer );
2380                     cl->p_buffer = xmalloc( cl->i_buffer_size );
2381                     cl->i_state = HTTPD_CLIENT_RECEIVING;
2382                     cl->b_read_waiting = false;
2383                 }
2384                 else
2385                 {
2386                     int64_t i_offset = cl->answer.i_body_offset;
2387                     httpd_MsgClean( &cl->answer );
2388
2389                     cl->answer.i_body_offset = i_offset;
2390                     free( cl->p_buffer );
2391                     cl->p_buffer = NULL;
2392                     cl->i_buffer = 0;
2393                     cl->i_buffer_size = 0;
2394
2395                     cl->i_state = HTTPD_CLIENT_WAITING;
2396                 }
2397             }
2398             else if( cl->i_state == HTTPD_CLIENT_WAITING )
2399             {
2400                 int64_t i_offset = cl->answer.i_body_offset;
2401                 int     i_msg = cl->query.i_type;
2402
2403                 httpd_MsgInit( &cl->answer );
2404                 cl->answer.i_body_offset = i_offset;
2405
2406                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
2407                                           &cl->answer, &cl->query );
2408                 if( cl->answer.i_type != HTTPD_MSG_NONE )
2409                 {
2410                     /* we have new data, so re-enter send mode */
2411                     cl->i_buffer      = 0;
2412                     cl->p_buffer      = cl->answer.p_body;
2413                     cl->i_buffer_size = cl->answer.i_body;
2414                     cl->answer.p_body = NULL;
2415                     cl->answer.i_body = 0;
2416                     cl->i_state = HTTPD_CLIENT_SENDING;
2417                 }
2418             }
2419
2420             /* Special for BIDIR mode we also check reading */
2421             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2422                 cl->i_state == HTTPD_CLIENT_SENDING )
2423             {
2424                 pufd->events |= POLLIN;
2425             }
2426
2427             if (pufd->events != 0)
2428                 nfd++;
2429             else
2430                 b_low_delay = true;
2431         }
2432         vlc_mutex_unlock( &host->lock );
2433
2434         ufd[nfd].fd = evfd;
2435         ufd[nfd].events = POLLIN;
2436         ufd[nfd].revents = 0;
2437         nfd++;
2438
2439         /* we will wait 20ms (not too big) if HTTPD_CLIENT_WAITING */
2440         switch( poll( ufd, nfd, b_low_delay ? 20 : -1) )
2441         {
2442             case -1:
2443                 if (errno != EINTR)
2444                 {
2445                     /* Kernel on low memory or a bug: pace */
2446                     msg_Err( host, "polling error: %m" );
2447                     msleep( 100000 );
2448                 }
2449             case 0:
2450                 continue;
2451         }
2452
2453         if( ufd[nfd - 1].revents )
2454             break;
2455
2456         /* Handle client sockets */
2457         vlc_mutex_lock( &host->lock );
2458         now = mdate();
2459         nfd = host->nfd;
2460         for( int i_client = 0; i_client < host->i_client; i_client++ )
2461         {
2462             httpd_client_t *cl = host->client[i_client];
2463             const struct pollfd *pufd = &ufd[nfd];
2464
2465             assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
2466
2467             if( cl->fd != pufd->fd )
2468                 continue; // we were not waiting for this client
2469             ++nfd;
2470             if( pufd->revents == 0 )
2471                 continue; // no event received
2472
2473             cl->i_activity_date = now;
2474
2475             if( cl->i_state == HTTPD_CLIENT_RECEIVING )
2476             {
2477                 httpd_ClientRecv( cl );
2478             }
2479             else if( cl->i_state == HTTPD_CLIENT_SENDING )
2480             {
2481                 httpd_ClientSend( cl );
2482             }
2483             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_IN )
2484             {
2485                 httpd_ClientTlsHsIn( cl );
2486             }
2487             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT )
2488             {
2489                 httpd_ClientTlsHsOut( cl );
2490             }
2491
2492             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2493                 cl->i_state == HTTPD_CLIENT_SENDING &&
2494                 (pufd->revents & POLLIN) )
2495             {
2496                 cl->b_read_waiting = true;
2497             }
2498         }
2499         vlc_mutex_unlock( &host->lock );
2500
2501         /* Handle server sockets (accept new connections) */
2502         for( nfd = 0; nfd < host->nfd; nfd++ )
2503         {
2504             httpd_client_t *cl;
2505             int i_state = -1;
2506             int fd = ufd[nfd].fd;
2507
2508             assert (fd == host->fds[nfd]);
2509
2510             if( ufd[nfd].revents == 0 )
2511                 continue;
2512
2513             /* */
2514 #ifdef HAVE_ACCEPT4
2515             fd = accept4 (fd, NULL, NULL, SOCK_CLOEXEC);
2516             if (fd == -1 && errno == ENOSYS)
2517 #endif
2518             fd = accept (fd, NULL, NULL);
2519             if (fd == -1)
2520                 continue;
2521
2522             net_SetupSocket (fd);
2523             if( p_tls != NULL )
2524             {
2525                 switch( tls_ServerSessionHandshake( p_tls, fd ) )
2526                 {
2527                     case -1:
2528                         msg_Err( host, "Rejecting TLS connection" );
2529                         net_Close( fd );
2530                         fd = -1;
2531                         p_tls = NULL;
2532                         break;
2533
2534                     case 1: /* missing input - most likely */
2535                         i_state = HTTPD_CLIENT_TLS_HS_IN;
2536                         break;
2537
2538                     case 2: /* missing output */
2539                         i_state = HTTPD_CLIENT_TLS_HS_OUT;
2540                         break;
2541                 }
2542
2543                 if( (p_tls == NULL) != (host->p_tls == NULL) )
2544                     break; // wasted TLS session, cannot accept() anymore
2545             }
2546
2547             stats_UpdateInteger( host, p_total_counter, 1, NULL );
2548             stats_UpdateInteger( host, p_active_counter, 1, NULL );
2549             cl = httpd_ClientNew( fd, p_tls, now );
2550             p_tls = NULL;
2551             vlc_mutex_lock( &host->lock );
2552             TAB_APPEND( host->i_client, host->client, cl );
2553             vlc_mutex_unlock( &host->lock );
2554             if( i_state != -1 )
2555                 cl->i_state = i_state; // override state for TLS
2556
2557             if (host->p_tls != NULL)
2558                 break; // cannot accept further without new TLS session
2559         }
2560
2561     }
2562
2563     if( p_tls != NULL )
2564         tls_ServerSessionClose( p_tls );
2565     if( p_total_counter )
2566         stats_CounterClean( p_total_counter );
2567     if( p_active_counter )
2568         stats_CounterClean( p_active_counter );
2569     return NULL;
2570 }