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