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     assert( psz_url != NULL );
1192
1193     vlc_mutex_lock( &host->lock );
1194     if( b_check )
1195     {
1196         for( i = 0; i < host->i_url; i++ )
1197         {
1198             if( !strcmp( psz_url, host->url[i]->psz_url ) )
1199             {
1200                 msg_Warn( host->httpd,
1201                           "cannot add '%s' (url already defined)", psz_url );
1202                 vlc_mutex_unlock( &host->lock );
1203                 return NULL;
1204             }
1205         }
1206     }
1207
1208     url = malloc( sizeof( httpd_url_t ) );
1209     url->host = host;
1210
1211     vlc_mutex_init( host->httpd, &url->lock );
1212     url->psz_url = strdup( psz_url );
1213     url->psz_user = strdup( psz_user ? psz_user : "" );
1214     url->psz_password = strdup( psz_password ? psz_password : "" );
1215     url->p_acl = ACL_Duplicate( host, p_acl );
1216     for( i = 0; i < HTTPD_MSG_MAX; i++ )
1217     {
1218         url->catch[i].cb = NULL;
1219         url->catch[i].p_sys = NULL;
1220     }
1221
1222     TAB_APPEND( host->i_url, host->url, url );
1223     vlc_mutex_unlock( &host->lock );
1224
1225     return url;
1226 }
1227
1228 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
1229                            const char *psz_user, const char *psz_password,
1230                            const vlc_acl_t *p_acl )
1231 {
1232     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1233                                 psz_password, p_acl, VLC_FALSE );
1234 }
1235
1236 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
1237                                  const char *psz_user, const char *psz_password,
1238                                  const vlc_acl_t *p_acl )
1239 {
1240     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1241                                 psz_password, p_acl, VLC_TRUE );
1242 }
1243
1244 /* register callback on a url */
1245 int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
1246                     httpd_callback_sys_t *p_sys )
1247 {
1248     vlc_mutex_lock( &url->lock );
1249     url->catch[i_msg].cb   = cb;
1250     url->catch[i_msg].p_sys= p_sys;
1251     vlc_mutex_unlock( &url->lock );
1252
1253     return VLC_SUCCESS;
1254 }
1255
1256 /* delete an url */
1257 void httpd_UrlDelete( httpd_url_t *url )
1258 {
1259     httpd_host_t *host = url->host;
1260     int          i;
1261
1262     vlc_mutex_lock( &host->lock );
1263     TAB_REMOVE( host->i_url, host->url, url );
1264
1265     vlc_mutex_destroy( &url->lock );
1266     free( url->psz_url );
1267     free( url->psz_user );
1268     free( url->psz_password );
1269     ACL_Destroy( url->p_acl );
1270
1271     for( i = 0; i < host->i_client; i++ )
1272     {
1273         httpd_client_t *client = host->client[i];
1274
1275         if( client->url == url )
1276         {
1277             /* TODO complete it */
1278             msg_Warn( host, "force closing connections" );
1279             httpd_ClientClean( client );
1280             TAB_REMOVE( host->i_client, host->client, client );
1281             free( client );
1282             i--;
1283         }
1284     }
1285     free( url );
1286     vlc_mutex_unlock( &host->lock );
1287 }
1288
1289 void httpd_MsgInit( httpd_message_t *msg )
1290 {
1291     msg->cl         = NULL;
1292     msg->i_type     = HTTPD_MSG_NONE;
1293     msg->i_proto    = HTTPD_PROTO_NONE;
1294     msg->i_version  = -1; /* FIXME */
1295
1296     msg->i_status   = 0;
1297
1298     msg->psz_url    = NULL;
1299     msg->psz_args   = NULL;
1300
1301     msg->i_channel  = -1;
1302
1303     msg->i_name     = 0;
1304     msg->name       = NULL;
1305     msg->i_value    = 0;
1306     msg->value      = NULL;
1307
1308     msg->i_body_offset = 0;
1309     msg->i_body        = 0;
1310     msg->p_body        = NULL;
1311 }
1312
1313 void httpd_MsgClean( httpd_message_t *msg )
1314 {
1315     int i;
1316
1317     if( msg->psz_url )
1318     {
1319         free( msg->psz_url );
1320     }
1321     if( msg->psz_args )
1322     {
1323         free( msg->psz_args );
1324     }
1325     for( i = 0; i < msg->i_name; i++ )
1326     {
1327         free( msg->name[i] );
1328         free( msg->value[i] );
1329     }
1330     if( msg->name )
1331     {
1332         free( msg->name );
1333     }
1334     if( msg->value )
1335     {
1336         free( msg->value );
1337     }
1338     if( msg->p_body )
1339     {
1340         free( msg->p_body );
1341     }
1342     httpd_MsgInit( msg );
1343 }
1344
1345 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
1346 {
1347     int i;
1348
1349     for( i = 0; i < msg->i_name; i++ )
1350     {
1351         if( !strcasecmp( msg->name[i], name ))
1352         {
1353             return msg->value[i];
1354         }
1355     }
1356     return NULL;
1357 }
1358
1359 void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
1360 {
1361     va_list args;
1362     char *value = NULL;
1363
1364     va_start( args, psz_value );
1365     if( vasprintf( &value, psz_value, args ) == -1 )
1366         value = NULL;
1367     va_end( args );
1368
1369     if( value == NULL )
1370         return;
1371
1372     name = strdup( name );
1373     if( name == NULL )
1374     {
1375         free( value );
1376         return;
1377     }
1378
1379     TAB_APPEND( msg->i_name,  msg->name,  (char*)name );
1380     TAB_APPEND( msg->i_value, msg->value, value );
1381 }
1382
1383 static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
1384 {
1385     cl->i_state = HTTPD_CLIENT_RECEIVING;
1386     cl->i_activity_date = now;
1387     cl->i_activity_timeout = I64C(10000000);
1388     cl->i_buffer_size = HTTPD_CL_BUFSIZE;
1389     cl->i_buffer = 0;
1390     cl->p_buffer = malloc( cl->i_buffer_size );
1391     cl->i_mode   = HTTPD_CLIENT_FILE;
1392     cl->b_read_waiting = VLC_FALSE;
1393
1394     httpd_MsgInit( &cl->query );
1395     httpd_MsgInit( &cl->answer );
1396 }
1397
1398 void httpd_ClientModeStream( httpd_client_t *cl )
1399 {
1400     cl->i_mode   = HTTPD_CLIENT_STREAM;
1401 }
1402
1403 void httpd_ClientModeBidir( httpd_client_t *cl )
1404 {
1405     cl->i_mode   = HTTPD_CLIENT_BIDIR;
1406 }
1407
1408 char* httpd_ClientIP( const httpd_client_t *cl, char *psz_ip )
1409 {
1410     return net_GetPeerAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1411 }
1412
1413 char* httpd_ServerIP( const httpd_client_t *cl, char *psz_ip )
1414 {
1415     return net_GetSockAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1416 }
1417
1418 static void httpd_ClientClean( httpd_client_t *cl )
1419 {
1420     if( cl->fd >= 0 )
1421     {
1422         if( cl->p_tls != NULL )
1423             tls_ServerSessionClose( cl->p_tls );
1424         net_Close( cl->fd );
1425         cl->fd = -1;
1426     }
1427
1428     httpd_MsgClean( &cl->answer );
1429     httpd_MsgClean( &cl->query );
1430
1431     if( cl->p_buffer )
1432     {
1433         free( cl->p_buffer );
1434         cl->p_buffer = NULL;
1435     }
1436 }
1437
1438 static httpd_client_t *httpd_ClientNew( int fd, tls_session_t *p_tls, mtime_t now )
1439 {
1440     httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
1441
1442     if( !cl ) return NULL;
1443
1444     cl->i_ref   = 0;
1445     cl->fd      = fd;
1446     cl->url     = NULL;
1447     cl->p_tls = p_tls;
1448
1449     httpd_ClientInit( cl, now );
1450
1451     return cl;
1452 }
1453
1454 static int httpd_NetRecv( httpd_client_t *cl, uint8_t *p, int i_len )
1455 {
1456     tls_session_t *p_tls;
1457
1458     p_tls = cl->p_tls;
1459     if( p_tls != NULL)
1460         return tls_Recv( p_tls, p, i_len );
1461
1462     return recv( cl->fd, p, i_len, 0 );
1463 }
1464
1465 static int httpd_NetSend( httpd_client_t *cl, const uint8_t *p, int i_len )
1466 {
1467     tls_session_t *p_tls;
1468
1469     p_tls = cl->p_tls;
1470     if( p_tls != NULL)
1471         return tls_Send( p_tls, p, i_len );
1472
1473     return send( cl->fd, p, i_len, 0 );
1474 }
1475
1476
1477 static const struct
1478 {
1479     const char name[16];
1480     int  i_type;
1481     int  i_proto;
1482 }
1483 msg_type[] =
1484 {
1485     { "OPTIONS",       HTTPD_MSG_OPTIONS,      HTTPD_PROTO_RTSP },
1486     { "DESCRIBE",      HTTPD_MSG_DESCRIBE,     HTTPD_PROTO_RTSP },
1487     { "SETUP",         HTTPD_MSG_SETUP,        HTTPD_PROTO_RTSP },
1488     { "PLAY",          HTTPD_MSG_PLAY,         HTTPD_PROTO_RTSP },
1489     { "PAUSE",         HTTPD_MSG_PAUSE,        HTTPD_PROTO_RTSP },
1490     { "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
1491     { "TEARDOWN",      HTTPD_MSG_TEARDOWN,     HTTPD_PROTO_RTSP },
1492     { "GET",           HTTPD_MSG_GET,          HTTPD_PROTO_HTTP },
1493     { "HEAD",          HTTPD_MSG_HEAD,         HTTPD_PROTO_HTTP },
1494     { "POST",          HTTPD_MSG_POST,         HTTPD_PROTO_HTTP },
1495     { "",              HTTPD_MSG_NONE,         HTTPD_PROTO_NONE }
1496 };
1497
1498
1499 static void httpd_ClientRecv( httpd_client_t *cl )
1500 {
1501     int i_len;
1502
1503     /* ignore leading whites */
1504     if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
1505         ( cl->i_buffer == 0 ) )
1506     {
1507         unsigned char c;
1508
1509         i_len = httpd_NetRecv( cl, &c, 1 );
1510
1511         if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
1512         {
1513             cl->p_buffer[0] = c;
1514             cl->i_buffer++;
1515         }
1516     }
1517     else
1518     if( cl->query.i_proto == HTTPD_PROTO_NONE )
1519     {
1520         /* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
1521         i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
1522                                7 - cl->i_buffer );
1523         if( i_len > 0 )
1524         {
1525             cl->i_buffer += i_len;
1526         }
1527
1528         if( ( cl->i_buffer >= 4 ) && ( cl->p_buffer[0] == '$' ) )
1529         {
1530             /* Interleaved RTP over RTSP */
1531             cl->query.i_proto = HTTPD_PROTO_RTSP;
1532             cl->query.i_type  = HTTPD_MSG_CHANNEL;
1533             cl->query.i_channel = cl->p_buffer[1];
1534             cl->query.i_body  = (cl->p_buffer[2] << 8)|cl->p_buffer[3];
1535             cl->query.p_body  = malloc( cl->query.i_body );
1536             cl->i_buffer      -= 4;
1537             memcpy( cl->query.p_body, cl->p_buffer + 4, cl->i_buffer );
1538         }
1539         else
1540         /* The smallest legal request is 7 bytes ("GET /\r\n"),
1541          * this is the maximum we can ask at this point. */
1542         if( cl->i_buffer >= 7 )
1543         {
1544             if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
1545             {
1546                 cl->query.i_proto = HTTPD_PROTO_HTTP;
1547                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1548             }
1549             else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
1550             {
1551                 cl->query.i_proto = HTTPD_PROTO_RTSP;
1552                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1553             }
1554             else
1555             {
1556                 /* We need the full request line to determine the protocol. */
1557                 cl->query.i_proto = HTTPD_PROTO_HTTP0;
1558                 cl->query.i_type  = HTTPD_MSG_NONE;
1559             }
1560         }
1561     }
1562     else if( cl->query.i_body > 0 )
1563     {
1564         /* we are reading the body of a request or a channel */
1565         i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
1566                                cl->query.i_body - cl->i_buffer );
1567         if( i_len > 0 )
1568         {
1569             cl->i_buffer += i_len;
1570         }
1571         if( cl->i_buffer >= cl->query.i_body )
1572         {
1573             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1574         }
1575     }
1576     else
1577     {
1578         /* we are reading a header -> char by char */
1579         for( ;; )
1580         {
1581             if( cl->i_buffer == cl->i_buffer_size )
1582             {
1583                 uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
1584                 if( newbuf == NULL )
1585                 {
1586                     i_len = 0;
1587                     break;
1588                 }
1589
1590                 cl->p_buffer = newbuf;
1591                 cl->i_buffer_size += 1024;
1592             }
1593
1594             i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
1595             if( i_len <= 0 )
1596             {
1597                 break;
1598             }
1599             cl->i_buffer++;
1600
1601             if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
1602              && ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
1603             {
1604                 /* Request line is now complete */
1605                 const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
1606                 size_t len;
1607
1608                 assert( cl->query.i_type == HTTPD_MSG_NONE );
1609
1610                 if( p == NULL ) /* no URI: evil guy */
1611                 {
1612                     i_len = 0; /* drop connection */
1613                     break;
1614                 }
1615
1616                 do
1617                     p++; /* skips extra spaces */
1618                 while( *p == ' ' );
1619
1620                 p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
1621                 if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
1622                 {
1623                     i_len = 0; /* not supported currently -> drop */
1624                     break;
1625                 }
1626
1627                 do
1628                     p++; /* skips extra spaces ever again */
1629                 while( *p == ' ' );
1630
1631                 len = ((char *)cl->p_buffer) + cl->i_buffer - p;
1632                 if( len < 7 ) /* foreign protocol */
1633                     i_len = 0; /* I don't understand -> drop */
1634                 else
1635                 if( memcmp( p, "HTTP/1.", 7 ) == 0 )
1636                 {
1637                     cl->query.i_proto = HTTPD_PROTO_HTTP;
1638                     cl->query.i_version = atoi( p + 7 );
1639                 }
1640                 else
1641                 if( memcmp( p, "RTSP/1.", 7 ) == 0 )
1642                 {
1643                     cl->query.i_proto = HTTPD_PROTO_RTSP;
1644                     cl->query.i_version = atoi( p + 7 );
1645                 }
1646                 else
1647                 if( memcmp( p, "HTTP/", 5 ) == 0 )
1648                 {
1649                     const uint8_t sorry[] =
1650                        "HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
1651                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1652                     i_len = 0; /* drop */
1653                 }
1654                 else
1655                 if( memcmp( p, "RTSP/", 5 ) == 0 )
1656                 {
1657                     const uint8_t sorry[] =
1658                         "RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
1659                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1660                     i_len = 0; /* drop */
1661                 }
1662                 else /* yet another foreign protocol */
1663                     i_len = 0;
1664
1665                 if( i_len == 0 )
1666                     break;
1667             }
1668
1669             if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
1670                 ( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
1671             {
1672                 char *p;
1673
1674                 /* we have finished the header so parse it and set i_body */
1675                 cl->p_buffer[cl->i_buffer] = '\0';
1676
1677                 if( cl->query.i_type == HTTPD_MSG_ANSWER )
1678                 {
1679                     /* FIXME:
1680                      * assume strlen( "HTTP/1.x" ) = 8
1681                      */
1682                     cl->query.i_status =
1683                         strtol( (char *)&cl->p_buffer[8],
1684                                 &p, 0 );
1685                     while( *p == ' ' )
1686                         p++;
1687                 }
1688                 else
1689                 {
1690                     unsigned i;
1691
1692                     p = NULL;
1693                     cl->query.i_type = HTTPD_MSG_NONE;
1694
1695                     /*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
1696
1697                     for( i = 0; msg_type[i].name[0]; i++ )
1698                     {
1699                         if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
1700                                       strlen( msg_type[i].name ) ) )
1701                         {
1702                             p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
1703                             cl->query.i_type = msg_type[i].i_type;
1704                             if( cl->query.i_proto != msg_type[i].i_proto )
1705                             {
1706                                 p = NULL;
1707                                 cl->query.i_proto = HTTPD_PROTO_NONE;
1708                                 cl->query.i_type = HTTPD_MSG_NONE;
1709                             }
1710                             break;
1711                         }
1712                     }
1713                     if( p == NULL )
1714                     {
1715                         if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
1716                         {
1717                             cl->query.i_proto = HTTPD_PROTO_HTTP;
1718                         }
1719                         else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
1720                         {
1721                             cl->query.i_proto = HTTPD_PROTO_RTSP;
1722                         }
1723                     }
1724                     else
1725                     {
1726                         char *p2;
1727                         char *p3;
1728
1729                         while( *p == ' ' )
1730                         {
1731                             p++;
1732                         }
1733                         p2 = strchr( p, ' ' );
1734                         if( p2 )
1735                         {
1736                             *p2++ = '\0';
1737                         }
1738                         if( !strncasecmp( p, "rtsp:", 5 ) )
1739                         {
1740                             /* for rtsp url, you have rtsp://localhost:port/path */
1741                             p += 5;
1742                             while( *p == '/' ) p++;
1743                             while( *p && *p != '/' ) p++;
1744                         }
1745                         cl->query.psz_url = strdup( p );
1746                         if( ( p3 = strchr( cl->query.psz_url, '?' ) )  )
1747                         {
1748                             *p3++ = '\0';
1749                             cl->query.psz_args = (uint8_t *)strdup( p3 );
1750                         }
1751                         p = p2;
1752                     }
1753                 }
1754                 if( p )
1755                 {
1756                     p = strchr( p, '\n' );
1757                 }
1758                 if( p )
1759                 {
1760                     while( *p == '\n' || *p == '\r' )
1761                     {
1762                         p++;
1763                     }
1764                     while( p && *p != '\0' )
1765                     {
1766                         char *line = p;
1767                         char *eol = p = strchr( p, '\n' );
1768                         char *colon;
1769
1770                         while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
1771                         {
1772                             *eol-- = '\0';
1773                         }
1774
1775                         if( ( colon = strchr( line, ':' ) ) )
1776                         {
1777                             char *name;
1778                             char *value;
1779
1780                             *colon++ = '\0';
1781                             while( *colon == ' ' )
1782                             {
1783                                 colon++;
1784                             }
1785                             name = strdup( line );
1786                             value = strdup( colon );
1787
1788                             TAB_APPEND( cl->query.i_name, cl->query.name, name );
1789                             TAB_APPEND( cl->query.i_value,cl->query.value,value);
1790
1791                             if( !strcasecmp( name, "Content-Length" ) )
1792                             {
1793                                 cl->query.i_body = atol( value );
1794                             }
1795                         }
1796
1797                         if( p )
1798                         {
1799                             p++;
1800                             while( *p == '\n' || *p == '\r' )
1801                             {
1802                                 p++;
1803                             }
1804                         }
1805                     }
1806                 }
1807                 if( cl->query.i_body > 0 )
1808                 {
1809                     /* TODO Mhh, handle the case client will only send a
1810                      * request and close the connection
1811                      * to mark and of body (probably only RTSP) */
1812                     cl->query.p_body = malloc( cl->query.i_body );
1813                     cl->i_buffer = 0;
1814                 }
1815                 else
1816                 {
1817                     cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1818                 }
1819             }
1820         }
1821     }
1822
1823     /* check if the client is to be set to dead */
1824 #if defined( WIN32 ) || defined( UNDER_CE )
1825     if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1826 #else
1827     if( ( i_len < 0 && errno != EAGAIN && errno != EINTR ) || ( i_len == 0 ) )
1828 #endif
1829     {
1830         if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
1831         {
1832             /* connection closed -> end of data */
1833             if( cl->query.i_body > 0 )
1834             {
1835                 cl->query.i_body = cl->i_buffer;
1836             }
1837             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1838         }
1839         else
1840         {
1841             cl->i_state = HTTPD_CLIENT_DEAD;
1842         }
1843     }
1844
1845     /* XXX: for QT I have to disable timeout. Try to find why */
1846     if( cl->query.i_proto == HTTPD_PROTO_RTSP )
1847         cl->i_activity_timeout = 0;
1848
1849 #if 0 /* Debugging only */
1850     if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
1851     {
1852         int i;
1853
1854         fprintf( stderr, "received new request\n" );
1855         fprintf( stderr, "  - proto=%s\n",
1856                  cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
1857         fprintf( stderr, "  - version=%d\n", cl->query.i_version );
1858         fprintf( stderr, "  - msg=%d\n", cl->query.i_type );
1859         if( cl->query.i_type == HTTPD_MSG_ANSWER )
1860         {
1861             fprintf( stderr, "  - answer=%d '%s'\n", cl->query.i_status,
1862                      cl->query.psz_status );
1863         }
1864         else if( cl->query.i_type != HTTPD_MSG_NONE )
1865         {
1866             fprintf( stderr, "  - url=%s\n", cl->query.psz_url );
1867         }
1868         for( i = 0; i < cl->query.i_name; i++ )
1869         {
1870             fprintf( stderr, "  - option name='%s' value='%s'\n",
1871                      cl->query.name[i], cl->query.value[i] );
1872         }
1873     }
1874 #endif
1875 }
1876
1877 static void httpd_ClientSend( httpd_client_t *cl )
1878 {
1879     int i;
1880     int i_len;
1881
1882     if( cl->i_buffer < 0 )
1883     {
1884         /* We need to create the header */
1885         int i_size = 0;
1886         char *p;
1887         const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
1888
1889         i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
1890         for( i = 0; i < cl->answer.i_name; i++ )
1891         {
1892             i_size += strlen( cl->answer.name[i] ) + 2 +
1893                       strlen( cl->answer.value[i] ) + 2;
1894         }
1895
1896         if( cl->i_buffer_size < i_size )
1897         {
1898             cl->i_buffer_size = i_size;
1899             free( cl->p_buffer );
1900             cl->p_buffer = malloc( i_size );
1901         }
1902         p = (char *)cl->p_buffer;
1903
1904         p += sprintf( p, "%s.%u %d %s\r\n",
1905                       cl->answer.i_proto ==  HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
1906                       cl->answer.i_version,
1907                       cl->answer.i_status, psz_status );
1908         for( i = 0; i < cl->answer.i_name; i++ )
1909         {
1910             p += sprintf( p, "%s: %s\r\n", cl->answer.name[i],
1911                           cl->answer.value[i] );
1912         }
1913         p += sprintf( p, "\r\n" );
1914
1915         cl->i_buffer = 0;
1916         cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
1917
1918         /*fprintf( stderr, "sending answer\n" );
1919         fprintf( stderr, "%s",  cl->p_buffer );*/
1920     }
1921
1922     i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
1923                            cl->i_buffer_size - cl->i_buffer );
1924     if( i_len >= 0 )
1925     {
1926         cl->i_buffer += i_len;
1927
1928         if( cl->i_buffer >= cl->i_buffer_size )
1929         {
1930             if( cl->answer.i_body == 0  && cl->answer.i_body_offset > 0 &&
1931                 !cl->b_read_waiting )
1932             {
1933                 /* catch more body data */
1934                 int     i_msg = cl->query.i_type;
1935                 int64_t i_offset = cl->answer.i_body_offset;
1936
1937                 httpd_MsgClean( &cl->answer );
1938                 cl->answer.i_body_offset = i_offset;
1939
1940                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
1941                                           &cl->answer, &cl->query );
1942             }
1943
1944             if( cl->answer.i_body > 0 )
1945             {
1946                 /* send the body data */
1947                 free( cl->p_buffer );
1948                 cl->p_buffer = cl->answer.p_body;
1949                 cl->i_buffer_size = cl->answer.i_body;
1950                 cl->i_buffer = 0;
1951
1952                 cl->answer.i_body = 0;
1953                 cl->answer.p_body = NULL;
1954             }
1955             else
1956             {
1957                 /* send finished */
1958                 cl->i_state = HTTPD_CLIENT_SEND_DONE;
1959             }
1960         }
1961     }
1962     else
1963     {
1964 #if defined( WIN32 ) || defined( UNDER_CE )
1965         if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1966 #else
1967         if( ( i_len < 0 && errno != EAGAIN && errno != EINTR ) || ( i_len == 0 ) )
1968 #endif
1969         {
1970             /* error */
1971             cl->i_state = HTTPD_CLIENT_DEAD;
1972         }
1973     }
1974 }
1975
1976 static void httpd_ClientTlsHsIn( httpd_client_t *cl )
1977 {
1978     switch( tls_SessionContinueHandshake( cl->p_tls ) )
1979     {
1980         case 0:
1981             cl->i_state = HTTPD_CLIENT_RECEIVING;
1982             break;
1983
1984         case -1:
1985             cl->i_state = HTTPD_CLIENT_DEAD;
1986             cl->p_tls = NULL;
1987             break;
1988
1989         case 2:
1990             cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
1991     }
1992 }
1993
1994 static void httpd_ClientTlsHsOut( httpd_client_t *cl )
1995 {
1996     switch( tls_SessionContinueHandshake( cl->p_tls ) )
1997     {
1998         case 0:
1999             cl->i_state = HTTPD_CLIENT_RECEIVING;
2000             break;
2001
2002         case -1:
2003             cl->i_state = HTTPD_CLIENT_DEAD;
2004             cl->p_tls = NULL;
2005             break;
2006
2007         case 1:
2008             cl->i_state = HTTPD_CLIENT_TLS_HS_IN;
2009             break;
2010     }
2011 }
2012
2013 static void httpd_HostThread( httpd_host_t *host )
2014 {
2015     tls_session_t *p_tls = NULL;
2016     counter_t *p_total_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2017     counter_t *p_active_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2018
2019     while( !host->b_die )
2020     {
2021         if( host->i_url <= 0 )
2022         {
2023             /* 0.2s */
2024             msleep( 200000 );
2025             continue;
2026         }
2027
2028         /* prepare a new TLS session */
2029         if( ( p_tls == NULL ) && ( host->p_tls != NULL ) )
2030             p_tls = tls_ServerSessionPrepare( host->p_tls );
2031
2032         struct pollfd ufd[host->nfd + host->i_client];
2033         unsigned nfd;
2034         for( nfd = 0; nfd < host->nfd; nfd++ )
2035         {
2036             ufd[nfd].fd = host->fds[nfd];
2037             ufd[nfd].events = POLLIN;
2038             ufd[nfd].revents = 0;
2039         }
2040
2041         /* add all socket that should be read/write and close dead connection */
2042         vlc_mutex_lock( &host->lock );
2043         mtime_t now = mdate();
2044         vlc_bool_t b_low_delay = VLC_FALSE;
2045
2046         for(int i_client = 0; i_client < host->i_client; i_client++ )
2047         {
2048             httpd_client_t *cl = host->client[i_client];
2049             if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
2050                 ( cl->i_state == HTTPD_CLIENT_DEAD ||
2051                   ( cl->i_activity_timeout > 0 &&
2052                     cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
2053             {
2054                 httpd_ClientClean( cl );
2055                 stats_UpdateInteger( host, p_active_counter, -1, NULL );
2056                 TAB_REMOVE( host->i_client, host->client, cl );
2057                 free( cl );
2058                 i_client--;
2059                 continue;
2060             }
2061
2062             struct pollfd *pufd = ufd + nfd;
2063             assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
2064
2065             pufd->fd = cl->fd;
2066             pufd->events = pufd->revents = 0;
2067
2068             if( ( cl->i_state == HTTPD_CLIENT_RECEIVING )
2069                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_IN ) )
2070             {
2071                 pufd->events = POLLIN;
2072             }
2073             else if( ( cl->i_state == HTTPD_CLIENT_SENDING )
2074                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT ) )
2075             {
2076                 pufd->events = POLLOUT;
2077             }
2078             else if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
2079             {
2080                 httpd_message_t *answer = &cl->answer;
2081                 httpd_message_t *query  = &cl->query;
2082                 int i_msg = query->i_type;
2083
2084                 httpd_MsgInit( answer );
2085
2086                 /* Handle what we received */
2087                 if( (cl->i_mode != HTTPD_CLIENT_BIDIR) &&
2088                     (i_msg == HTTPD_MSG_ANSWER || i_msg == HTTPD_MSG_CHANNEL) )
2089                 {
2090                     /* we can only receive request from client when not
2091                      * in BIDIR mode */
2092                     cl->url     = NULL;
2093                     cl->i_state = HTTPD_CLIENT_DEAD;
2094                 }
2095                 else if( i_msg == HTTPD_MSG_ANSWER )
2096                 {
2097                     /* We are in BIDIR mode, trigger the callback and then
2098                      * check for new data */
2099                     if( cl->url && cl->url->catch[i_msg].cb )
2100                     {
2101                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2102                                                   cl, NULL, query );
2103                     }
2104                     cl->i_state = HTTPD_CLIENT_WAITING;
2105                 }
2106                 else if( i_msg == HTTPD_MSG_CHANNEL )
2107                 {
2108                     /* We are in BIDIR mode, trigger the callback and then
2109                      * check for new data */
2110                     if( cl->url && cl->url->catch[i_msg].cb )
2111                     {
2112                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2113                                                   cl, NULL, query );
2114                     }
2115                     cl->i_state = HTTPD_CLIENT_WAITING;
2116                 }
2117                 else if( i_msg == HTTPD_MSG_OPTIONS )
2118                 {
2119
2120                     answer->i_type   = HTTPD_MSG_ANSWER;
2121                     answer->i_proto  = query->i_proto;
2122                     answer->i_status = 200;
2123                     answer->i_body = 0;
2124                     answer->p_body = NULL;
2125
2126                     httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
2127                     httpd_MsgAdd( answer, "Content-Length", "0" );
2128
2129                     switch( query->i_proto )
2130                     {
2131                         case HTTPD_PROTO_HTTP:
2132                             answer->i_version = 1;
2133                             httpd_MsgAdd( answer, "Allow",
2134                                           "GET,HEAD,POST,OPTIONS" );
2135                             break;
2136
2137                         case HTTPD_PROTO_RTSP:
2138                         {
2139                             const char *p;
2140                             answer->i_version = 0;
2141
2142                             p = httpd_MsgGet( query, "Cseq" );
2143                             if( p != NULL )
2144                                 httpd_MsgAdd( answer, "Cseq", "%s", p );
2145                             p = httpd_MsgGet( query, "Timestamp" );
2146                             if( p != NULL )
2147                                 httpd_MsgAdd( answer, "Timestamp", "%s", p );
2148
2149                             p = httpd_MsgGet( query, "Require" );
2150                             if( p != NULL )
2151                             {
2152                                 answer->i_status = 551;
2153                                 httpd_MsgAdd( query, "Unsupported", "%s", p );
2154                             }
2155
2156                             httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
2157                                           "TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
2158                             break;
2159                         }
2160                     }
2161
2162                     cl->i_buffer = -1;  /* Force the creation of the answer in
2163                                          * httpd_ClientSend */
2164                     cl->i_state = HTTPD_CLIENT_SENDING;
2165                 }
2166                 else if( i_msg == HTTPD_MSG_NONE )
2167                 {
2168                     if( query->i_proto == HTTPD_PROTO_NONE )
2169                     {
2170                         cl->url = NULL;
2171                         cl->i_state = HTTPD_CLIENT_DEAD;
2172                     }
2173                     else
2174                     {
2175                         char *p;
2176
2177                         /* unimplemented */
2178                         answer->i_proto  = query->i_proto ;
2179                         answer->i_type   = HTTPD_MSG_ANSWER;
2180                         answer->i_version= 0;
2181                         answer->i_status = 501;
2182
2183                         answer->i_body = httpd_HtmlError (&p, 501, NULL);
2184                         answer->p_body = (uint8_t *)p;
2185                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2186
2187                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2188                         cl->i_state = HTTPD_CLIENT_SENDING;
2189                     }
2190                 }
2191                 else
2192                 {
2193                     vlc_bool_t b_auth_failed = VLC_FALSE;
2194                     vlc_bool_t b_hosts_failed = VLC_FALSE;
2195
2196                     /* Search the url and trigger callbacks */
2197                     for(int i = 0; i < host->i_url; i++ )
2198                     {
2199                         httpd_url_t *url = host->url[i];
2200
2201                         if( !strcmp( url->psz_url, query->psz_url ) )
2202                         {
2203                             if( url->catch[i_msg].cb )
2204                             {
2205                                 if( answer && ( url->p_acl != NULL ) )
2206                                 {
2207                                     char ip[NI_MAXNUMERICHOST];
2208
2209                                     if( ( httpd_ClientIP( cl, ip ) == NULL )
2210                                      || ACL_Check( url->p_acl, ip ) )
2211                                     {
2212                                         b_hosts_failed = VLC_TRUE;
2213                                         break;
2214                                     }
2215                                 }
2216
2217                                 if( answer && ( *url->psz_user || *url->psz_password ) )
2218                                 {
2219                                     /* create the headers */
2220                                     const char *b64 = httpd_MsgGet( query, "Authorization" ); /* BASIC id */
2221                                     char *user = NULL, *pass = NULL;
2222
2223                                     if( b64 != NULL
2224                                      && !strncasecmp( b64, "BASIC", 5 ) )
2225                                     {
2226                                         b64 += 5;
2227                                         while( *b64 == ' ' )
2228                                             b64++;
2229
2230                                         user = vlc_b64_decode( b64 );
2231                                         if (user != NULL)
2232                                         {
2233                                             pass = strchr (user, ':');
2234                                             if (pass != NULL)
2235                                                 *pass++ = '\0';
2236                                         }
2237                                     }
2238
2239                                     if ((user == NULL) || (pass == NULL)
2240                                      || strcmp (user, url->psz_user)
2241                                      || strcmp (pass, url->psz_password))
2242                                     {
2243                                         httpd_MsgAdd( answer,
2244                                                       "WWW-Authenticate",
2245                                                       "Basic realm=\"%s\"",
2246                                                       url->psz_user );
2247                                         /* We fail for all url */
2248                                         b_auth_failed = VLC_TRUE;
2249                                         free( user );
2250                                         break;
2251                                     }
2252
2253                                     free( user );
2254                                 }
2255
2256                                 if( !url->catch[i_msg].cb( url->catch[i_msg].p_sys, cl, answer, query ) )
2257                                 {
2258                                     if( answer->i_proto == HTTPD_PROTO_NONE )
2259                                     {
2260                                         /* Raw answer from a CGI */
2261                                         cl->i_buffer = cl->i_buffer_size;
2262                                     }
2263                                     else
2264                                         cl->i_buffer = -1;
2265
2266                                     /* only one url can answer */
2267                                     answer = NULL;
2268                                     if( cl->url == NULL )
2269                                     {
2270                                         cl->url = url;
2271                                     }
2272                                 }
2273                             }
2274                         }
2275                     }
2276
2277                     if( answer )
2278                     {
2279                         char *p;
2280
2281                         answer->i_proto  = query->i_proto;
2282                         answer->i_type   = HTTPD_MSG_ANSWER;
2283                         answer->i_version= 0;
2284
2285                         if( b_hosts_failed )
2286                         {
2287                             answer->i_status = 403;
2288                         }
2289                         else if( b_auth_failed )
2290                         {
2291                             answer->i_status = 401;
2292                         }
2293                         else
2294                         {
2295                             /* no url registered */
2296                             answer->i_status = 404;
2297                         }
2298
2299                         answer->i_body = httpd_HtmlError (&p,
2300                                                           answer->i_status,
2301                                                           query->psz_url);
2302                         answer->p_body = (uint8_t *)p;
2303
2304                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2305                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2306                         httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
2307                     }
2308
2309                     cl->i_state = HTTPD_CLIENT_SENDING;
2310                 }
2311             }
2312             else if( cl->i_state == HTTPD_CLIENT_SEND_DONE )
2313             {
2314                 if( cl->i_mode == HTTPD_CLIENT_FILE || cl->answer.i_body_offset == 0 )
2315                 {
2316                     const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
2317                     const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
2318                     vlc_bool_t b_connection = VLC_FALSE;
2319                     vlc_bool_t b_keepalive = VLC_FALSE;
2320                     vlc_bool_t b_query = VLC_FALSE;
2321
2322                     cl->url = NULL;
2323                     if( psz_connection )
2324                     {
2325                         b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
2326                         b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
2327                     }
2328
2329                     if( psz_query )
2330                     {
2331                         b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
2332                     }
2333
2334                     if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
2335                           ( ( cl->answer.i_version == 0 && b_keepalive ) ||
2336                             ( cl->answer.i_version == 1 && !b_connection ) ) ) ||
2337                         ( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
2338                           !b_query && !b_connection ) )
2339                     {
2340                         httpd_MsgClean( &cl->query );
2341                         httpd_MsgInit( &cl->query );
2342
2343                         cl->i_buffer = 0;
2344                         cl->i_buffer_size = 1000;
2345                         free( cl->p_buffer );
2346                         cl->p_buffer = malloc( cl->i_buffer_size );
2347                         cl->i_state = HTTPD_CLIENT_RECEIVING;
2348                     }
2349                     else
2350                     {
2351                         cl->i_state = HTTPD_CLIENT_DEAD;
2352                     }
2353                     httpd_MsgClean( &cl->answer );
2354                 }
2355                 else if( cl->b_read_waiting )
2356                 {
2357                     /* we have a message waiting for us to read it */
2358                     httpd_MsgClean( &cl->answer );
2359                     httpd_MsgClean( &cl->query );
2360
2361                     cl->i_buffer = 0;
2362                     cl->i_buffer_size = 1000;
2363                     free( cl->p_buffer );
2364                     cl->p_buffer = malloc( cl->i_buffer_size );
2365                     cl->i_state = HTTPD_CLIENT_RECEIVING;
2366                     cl->b_read_waiting = VLC_FALSE;
2367                 }
2368                 else
2369                 {
2370                     int64_t i_offset = cl->answer.i_body_offset;
2371                     httpd_MsgClean( &cl->answer );
2372
2373                     cl->answer.i_body_offset = i_offset;
2374                     free( cl->p_buffer );
2375                     cl->p_buffer = NULL;
2376                     cl->i_buffer = 0;
2377                     cl->i_buffer_size = 0;
2378
2379                     cl->i_state = HTTPD_CLIENT_WAITING;
2380                 }
2381             }
2382             else if( cl->i_state == HTTPD_CLIENT_WAITING )
2383             {
2384                 int64_t i_offset = cl->answer.i_body_offset;
2385                 int     i_msg = cl->query.i_type;
2386
2387                 httpd_MsgInit( &cl->answer );
2388                 cl->answer.i_body_offset = i_offset;
2389
2390                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
2391                                           &cl->answer, &cl->query );
2392                 if( cl->answer.i_type != HTTPD_MSG_NONE )
2393                 {
2394                     /* we have new data, so re-enter send mode */
2395                     cl->i_buffer      = 0;
2396                     cl->p_buffer      = cl->answer.p_body;
2397                     cl->i_buffer_size = cl->answer.i_body;
2398                     cl->answer.p_body = NULL;
2399                     cl->answer.i_body = 0;
2400                     cl->i_state = HTTPD_CLIENT_SENDING;
2401                 }
2402                 else
2403                 {
2404                     /* we shouldn't wait too long */
2405                     b_low_delay = VLC_TRUE;
2406                 }
2407             }
2408
2409             /* Special for BIDIR mode we also check reading */
2410             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2411                 cl->i_state == HTTPD_CLIENT_SENDING )
2412             {
2413                 pufd->events |= POLLIN;
2414             }
2415
2416             if (pufd->events != 0)
2417                 nfd++;
2418         }
2419         vlc_mutex_unlock( &host->lock );
2420
2421         /* we will wait 100ms or 20ms (not too big 'cause HTTPD_CLIENT_WAITING) */
2422         switch( poll( ufd, nfd, b_low_delay ? 20 : 100) )
2423         {
2424             case -1:
2425                 if (errno != EINTR)
2426                 {
2427                     /* This is most likely a bug */
2428                     msg_Err( host, "polling error: %m" );
2429                     msleep( 1000 );
2430                 }
2431             case 0:
2432                 continue;
2433         }
2434
2435         /* Handle client sockets */
2436         vlc_mutex_lock( &host->lock );
2437         now = mdate();
2438         for( int i_client = 0; i_client < host->i_client; i_client++ )
2439         {
2440             httpd_client_t *cl = host->client[i_client];
2441             const struct pollfd *pufd = &ufd[host->nfd + i_client];
2442
2443             assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
2444
2445             if( cl->fd != pufd->fd )
2446                 continue; // we were not waiting for this client
2447             if( pufd->revents == 0 )
2448                 continue; // no event received
2449
2450             cl->i_activity_date = now;
2451
2452             if( cl->i_state == HTTPD_CLIENT_RECEIVING )
2453             {
2454                 httpd_ClientRecv( cl );
2455             }
2456             else if( cl->i_state == HTTPD_CLIENT_SENDING )
2457             {
2458                 httpd_ClientSend( cl );
2459             }
2460             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_IN )
2461             {
2462                 httpd_ClientTlsHsIn( cl );
2463             }
2464             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT )
2465             {
2466                 httpd_ClientTlsHsOut( cl );
2467             }
2468
2469             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2470                 cl->i_state == HTTPD_CLIENT_SENDING &&
2471                 (pufd->revents & POLLIN) )
2472             {
2473                 cl->b_read_waiting = VLC_TRUE;
2474             }
2475         }
2476         vlc_mutex_unlock( &host->lock );
2477
2478         /* Handle server sockets (accept new connections) */
2479         for( nfd = 0; nfd < host->nfd; nfd++ )
2480         {
2481             httpd_client_t *cl;
2482             int i_state = -1;
2483
2484             assert (ufd[nfd].fd == host->fds[nfd]);
2485
2486             if( ufd[nfd].revents == 0 )
2487                 continue;
2488
2489             /* */
2490             int kludge[] = { ufd[nfd].fd, -1 };
2491             int fd = net_Accept( host, kludge, 0 );
2492             if( fd < 0 )
2493                 continue;
2494
2495             if( p_tls != NULL )
2496             {
2497                 switch( tls_ServerSessionHandshake( p_tls, fd ) )
2498                 {
2499                     case -1:
2500                         msg_Err( host, "Rejecting TLS connection" );
2501                         net_Close( fd );
2502                         fd = -1;
2503                         p_tls = NULL;
2504                         break;
2505
2506                     case 1: /* missing input - most likely */
2507                         i_state = HTTPD_CLIENT_TLS_HS_IN;
2508                         break;
2509
2510                     case 2: /* missing output */
2511                         i_state = HTTPD_CLIENT_TLS_HS_OUT;
2512                         break;
2513                 }
2514
2515                 if( (p_tls == NULL) != (host->p_tls == NULL) )
2516                     break; // wasted TLS session, cannot accept() anymore
2517             }
2518
2519             stats_UpdateInteger( host, p_total_counter, 1, NULL );
2520             stats_UpdateInteger( host, p_active_counter, 1, NULL );
2521             cl = httpd_ClientNew( fd, p_tls, now );
2522             p_tls = NULL;
2523             vlc_mutex_lock( &host->lock );
2524             TAB_APPEND( host->i_client, host->client, cl );
2525             vlc_mutex_unlock( &host->lock );
2526             if( i_state != -1 )
2527                 cl->i_state = i_state; // override state for TLS
2528
2529             if (host->p_tls != NULL)
2530                 break; // cannot accept further without new TLS session
2531         }
2532
2533     }
2534
2535     if( p_tls != NULL )
2536         tls_ServerSessionClose( p_tls );
2537     if( p_total_counter )
2538         stats_CounterClean( p_total_counter );
2539     if( p_active_counter )
2540         stats_CounterClean( p_active_counter );
2541 }
2542
2543 #else /* ENABLE_HTTPD */
2544
2545 /* We just define an empty wrapper */
2546 httpd_host_t *httpd_TLSHostNew( vlc_object_t *a, char *b, int c,
2547                                 tls_server_t *d )
2548 {
2549     msg_Err( a, "HTTP daemon support is disabled" );
2550     return NULL;
2551 }
2552
2553 httpd_host_t *httpd_HostNew( vlc_object_t *a, char *b, int c )
2554 {
2555     msg_Err( a, "HTTP daemon support is disabled" );
2556     return NULL;
2557 }
2558
2559 void httpd_HostDelete( httpd_host_t *a )
2560 {
2561 }
2562
2563 httpd_url_t *httpd_UrlNew( httpd_host_t *host, char *psz_url,
2564                            char *psz_user, char *psz_password,
2565                            const vlc_acl_t *p_acl )
2566 {
2567     return NULL;
2568 }
2569
2570 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, char *psz_url,
2571                                  char *psz_user, char *psz_password,
2572                                  const vlc_acl_t *p_acl )
2573 {
2574     return NULL;
2575 }
2576
2577 int httpd_UrlCatch( httpd_url_t *a, int b, httpd_callback_t c,
2578                     httpd_callback_sys_t *d )
2579 {
2580     return 0;
2581 }
2582
2583 void httpd_UrlDelete( httpd_url_t *a )
2584 {
2585 }
2586
2587 char* httpd_ClientIP( httpd_client_t *cl, char *psz_ip )
2588 {
2589     return NULL;
2590 }
2591
2592 char* httpd_ServerIP( httpd_client_t *cl, char *psz_ip )
2593 {
2594     return NULL;
2595 }
2596
2597 void httpd_ClientModeStream( httpd_client_t *a )
2598 {
2599 }
2600
2601 void httpd_ClientModeBidir( httpd_client_t *a )
2602 {
2603 }
2604
2605 void httpd_FileDelete( httpd_file_t *a )
2606 {
2607 }
2608
2609 httpd_file_t *httpd_FileNew( httpd_host_t *a, char *b, char *c, char *d,
2610                              char *e, httpd_file_callback_t f,
2611                              httpd_file_sys_t *g )
2612 {
2613     return NULL;
2614 }
2615
2616 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
2617                                    const char *psz_user,
2618                                    const char *psz_password,
2619                                    const vlc_acl_t *p_acl,
2620                                    httpd_handler_callback_t pf_fill,
2621                                    httpd_handler_sys_t *p_sys )
2622 {
2623     return NULL;
2624 }
2625
2626 void httpd_HandlerDelete( httpd_handler_t *handler )
2627 {
2628 }
2629
2630 void httpd_RedirectDelete( httpd_redirect_t *a )
2631 {
2632 }
2633
2634 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *a,
2635                                      char *b, char *c )
2636 {
2637     return NULL;
2638 }
2639
2640 void httpd_StreamDelete( httpd_stream_t *a )
2641 {
2642 }
2643
2644 int httpd_StreamHeader( httpd_stream_t *a, uint8_t *b, int c )
2645 {
2646     return 0;
2647 }
2648
2649 int httpd_StreamSend ( httpd_stream_t *a, uint8_t *b, int c )
2650 {
2651     return 0;
2652 }
2653
2654 httpd_stream_t *httpd_StreamNew( httpd_host_t *a, char *b, char *c,
2655                                  char *d, char *e )
2656 {
2657     return NULL;
2658 }
2659
2660 void httpd_MsgInit ( httpd_message_t *a )
2661 {
2662 }
2663
2664 void httpd_MsgAdd  ( httpd_message_t *a, const char *b, const char *c, ... )
2665 {
2666 }
2667
2668 const char *httpd_MsgGet ( httpd_message_t *a, const char *b )
2669 {
2670     return "";
2671 }
2672
2673 void httpd_MsgClean( httpd_message_t *a )
2674 {
2675 }
2676
2677 #endif /* ENABLE_HTTPD */