git.sesse.net Git - vlc/blob - src/network/httpd.c

   1 /*****************************************************************************
   2  * httpd.c
   3  *****************************************************************************
   4  * Copyright (C) 2004-2006 the VideoLAN team
   5  * Copyright © 2004-2007 Rémi Denis-Courmont
   6  * $Id$
   7  *
   8  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   9  *          Rémi Denis-Courmont <rem # videolan.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <vlc_common.h>
  31 #include <vlc_httpd.h>
  32
  33 #include <assert.h>
  34
  35 #include <vlc_network.h>
  36 #include <vlc_tls.h>
  37 #include <vlc_acl.h>
  38 #include <vlc_strings.h>
  39 #include "../libvlc.h"
  40
  41 #include <string.h>
  42 #include <errno.h>
  43
  44 #ifdef HAVE_UNISTD_H
  45 #   include <unistd.h>
  46 #endif
  47
  48 #ifdef HAVE_FCNTL_H
  49 #   include <fcntl.h>
  50 #endif
  51
  52 #ifdef HAVE_POLL
  53 # include <poll.h>
  54 #endif
  55
  56 #if defined( UNDER_CE )
  57 #   include <winsock.h>
  58 #elif defined( WIN32 )
  59 #   include <winsock2.h>
  60 #else
  61 #   include <sys/socket.h>
  62 #endif
  63
  64 #if defined( WIN32 )
  65 /* We need HUGE buffer otherwise TCP throughput is very limited */
  66 #define HTTPD_CL_BUFSIZE 1000000
  67 #else
  68 #define HTTPD_CL_BUFSIZE 10000
  69 #endif
  70
  71 static void httpd_ClientClean( httpd_client_t *cl );
  72
  73 struct httpd_t
  74 {
  75     VLC_COMMON_MEMBERS
  76
  77     int          i_host;
  78     httpd_host_t **host;
  79 };
  80
  81
  82 /* each host run in his own thread */
  83 struct httpd_host_t
  84 {
  85     VLC_COMMON_MEMBERS
  86
  87     httpd_t     *httpd;
  88
  89     /* ref count */
  90     unsigned    i_ref;
  91
  92     /* address/port and socket for listening at connections */
  93     char        *psz_hostname;
  94     int         i_port;
  95     int         *fds;
  96     unsigned     nfd;
  97
  98     vlc_thread_t thread;
  99     vlc_mutex_t lock;
 100     vlc_cond_t  wait;
 101
 102     /* all registered url (becarefull that 2 httpd_url_t could point at the same url)
 103      * This will slow down the url research but make my live easier
 104      * All url will have their cb trigger, but only the first one can answer
 105      * */
 106     int         i_url;
 107     httpd_url_t **url;
 108
 109     int            i_client;
 110     httpd_client_t **client;
 111
 112     /* TLS data */
 113     tls_server_t *p_tls;
 114 };
 115
 116
 117 struct httpd_url_t
 118 {
 119     httpd_host_t *host;
 120
 121     vlc_mutex_t lock;
 122
 123     char      *psz_url;
 124     char      *psz_user;
 125     char      *psz_password;
 126     vlc_acl_t *p_acl;
 127
 128     struct
 129     {
 130         httpd_callback_t     cb;
 131         httpd_callback_sys_t *p_sys;
 132     } catch[HTTPD_MSG_MAX];
 133 };
 134
 135 /* status */
 136 enum
 137 {
 138     HTTPD_CLIENT_RECEIVING,
 139     HTTPD_CLIENT_RECEIVE_DONE,
 140
 141     HTTPD_CLIENT_SENDING,
 142     HTTPD_CLIENT_SEND_DONE,
 143
 144     HTTPD_CLIENT_WAITING,
 145
 146     HTTPD_CLIENT_DEAD,
 147
 148     HTTPD_CLIENT_TLS_HS_IN,
 149     HTTPD_CLIENT_TLS_HS_OUT
 150 };
 151
 152 /* mode */
 153 enum
 154 {
 155     HTTPD_CLIENT_FILE,      /* default */
 156     HTTPD_CLIENT_STREAM,    /* regulary get data from cb */
 157     HTTPD_CLIENT_BIDIR,     /* check for reading and get data from cb */
 158 };
 159
 160 struct httpd_client_t
 161 {
 162     httpd_url_t *url;
 163
 164     int     i_ref;
 165
 166     int     fd;
 167
 168     int     i_mode;
 169     int     i_state;
 170     int     b_read_waiting; /* stop as soon as possible sending */
 171
 172     mtime_t i_activity_date;
 173     mtime_t i_activity_timeout;
 174
 175     /* buffer for reading header */
 176     int     i_buffer_size;
 177     int     i_buffer;
 178     uint8_t *p_buffer;
 179
 180     /* */
 181     httpd_message_t query;  /* client -> httpd */
 182     httpd_message_t answer; /* httpd -> client */
 183
 184     /* TLS data */
 185     tls_session_t *p_tls;
 186 };
 187
 188
 189 /*****************************************************************************
 190  * Various functions
 191  *****************************************************************************/
 192 static const struct
 193 {
 194     const char psz_ext[8];
 195     const char *psz_mime;
 196 } http_mime[] =
 197 {
 198     { ".htm",   "text/html" },
 199     { ".html",  "text/html" },
 200     { ".txt",   "text/plain" },
 201     { ".xml",   "text/xml" },
 202     { ".dtd",   "text/dtd" },
 203
 204     { ".css",   "text/css" },
 205
 206     /* image mime */
 207     { ".gif",   "image/gif" },
 208     { ".jpe",   "image/jpeg" },
 209     { ".jpg",   "image/jpeg" },
 210     { ".jpeg",  "image/jpeg" },
 211     { ".png",   "image/png" },
 212     /* same as modules/mux/mpjpeg.c here: */
 213     { ".mpjpeg","multipart/x-mixed-replace; boundary=7b3cc56e5f51db803f790dad720ed50a" },
 214
 215     /* media mime */
 216     { ".avi",   "video/avi" },
 217     { ".asf",   "video/x-ms-asf" },
 218     { ".m1a",   "audio/mpeg" },
 219     { ".m2a",   "audio/mpeg" },
 220     { ".m1v",   "video/mpeg" },
 221     { ".m2v",   "video/mpeg" },
 222     { ".mp2",   "audio/mpeg" },
 223     { ".mp3",   "audio/mpeg" },
 224     { ".mpa",   "audio/mpeg" },
 225     { ".mpg",   "video/mpeg" },
 226     { ".mpeg",  "video/mpeg" },
 227     { ".mpe",   "video/mpeg" },
 228     { ".mov",   "video/quicktime" },
 229     { ".moov",  "video/quicktime" },
 230     { ".oga",   "audio/ogg" },
 231     { ".ogg",   "application/ogg" },
 232     { ".ogm",   "application/ogg" },
 233     { ".ogv",   "video/ogg" },
 234     { ".ogx",   "application/ogg" },
 235     { ".spx",   "audio/ogg" },
 236     { ".wav",   "audio/wav" },
 237     { ".wma",   "audio/x-ms-wma" },
 238     { ".wmv",   "video/x-ms-wmv" },
 239
 240
 241     /* end */
 242     { "",       "" }
 243 };
 244
 245 static const char *httpd_MimeFromUrl( const char *psz_url )
 246 {
 247
 248     char *psz_ext;
 249
 250     psz_ext = strrchr( psz_url, '.' );
 251     if( psz_ext )
 252     {
 253         int i;
 254
 255         for( i = 0; http_mime[i].psz_ext[0] ; i++ )
 256         {
 257             if( !strcasecmp( http_mime[i].psz_ext, psz_ext ) )
 258             {
 259                 return http_mime[i].psz_mime;
 260             }
 261         }
 262     }
 263     return "application/octet-stream";
 264 }
 265
 266
 267 typedef struct
 268 {
 269     unsigned   i_code;
 270     const char psz_reason[36];
 271 } http_status_info;
 272
 273 static const http_status_info http_reason[] =
 274 {
 275   /*{ 100, "Continue" },
 276     { 101, "Switching Protocols" },*/
 277     { 200, "OK" },
 278   /*{ 201, "Created" },
 279     { 202, "Accepted" },
 280     { 203, "Non-authoritative information" },
 281     { 204, "No content" },
 282     { 205, "Reset content" },
 283     { 206, "Partial content" },
 284     { 250, "Low on storage space" },
 285     { 300, "Multiple choices" },*/
 286     { 301, "Moved permanently" },
 287   /*{ 302, "Moved temporarily" },
 288     { 303, "See other" },
 289     { 304, "Not modified" },
 290     { 305, "Use proxy" },
 291     { 307, "Temporary redirect" },
 292     { 400, "Bad request" },*/
 293     { 401, "Unauthorized" },
 294   /*{ 402, "Payment Required" },*/
 295     { 403, "Forbidden" },
 296     { 404, "Not found" },
 297     { 405, "Method not allowed" },
 298   /*{ 406, "Not acceptable" },
 299     { 407, "Proxy authentication required" },
 300     { 408, "Request time-out" },
 301     { 409, "Conflict" },
 302     { 410, "Gone" },
 303     { 411, "Length required" },
 304     { 412, "Precondition failed" },
 305     { 413, "Request entity too large" },
 306     { 414, "Request-URI too large" },
 307     { 415, "Unsupported media Type" },
 308     { 416, "Requested range not satisfiable" },
 309     { 417, "Expectation failed" },
 310     { 451, "Parameter not understood" },
 311     { 452, "Conference not found" },
 312     { 453, "Not enough bandwidth" },*/
 313     { 454, "Session not found" },
 314   /*{ 455, "Method not valid in this State" },*/
 315     { 456, "Header field not valid for resource" },
 316   /*{ 457, "Invalid range" },
 317     { 458, "Read-only parameter" },*/
 318     { 459, "Aggregate operation not allowed" },
 319     { 460, "Non-aggregate operation not allowed" },
 320     { 461, "Unsupported transport" },
 321   /*{ 462, "Destination unreachable" },*/
 322     { 500, "Internal server error" },
 323     { 501, "Not implemented" },
 324   /*{ 502, "Bad gateway" },*/
 325     { 503, "Service unavailable" },
 326   /*{ 504, "Gateway time-out" },*/
 327     { 505, "Protocol version not supported" },
 328     { 551, "Option not supported" },
 329     { 999, "" }
 330 };
 331
 332 static const char psz_fallback_reason[5][16] =
 333 { "Continue", "OK", "Found", "Client error", "Server error" };
 334
 335 static const char *httpd_ReasonFromCode( unsigned i_code )
 336 {
 337     const http_status_info *p;
 338
 339     assert( ( i_code >= 100 ) && ( i_code <= 599 ) );
 340
 341     for (p = http_reason; i_code > p->i_code; p++);
 342
 343     if( p->i_code == i_code )
 344         return p->psz_reason;
 345
 346     return psz_fallback_reason[(i_code / 100) - 1];
 347 }
 348
 349
 350 static size_t httpd_HtmlError (char **body, int code, const char *url)
 351 {
 352     const char *errname = httpd_ReasonFromCode (code);
 353     assert (errname != NULL);
 354
 355     int res = asprintf (body,
 356         "<?xml version=\"1.0\" encoding=\"ascii\" ?>\n"
 357         "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\""
 358         " \"http://www.w3.org/TR/xhtml10/DTD/xhtml10strict.dtd\">\n"
 359         "<html lang=\"en\">\n"
 360         "<head>\n"
 361         "<title>%s</title>\n"
 362         "</head>\n"
 363         "<body>\n"
 364         "<h1>%d %s%s%s%s</h1>\n"
 365         "<hr />\n"
 366         "<a href=\"http://www.videolan.org\">VideoLAN</a>\n"
 367         "</body>\n"
 368         "</html>\n", errname, code, errname,
 369         (url ? " (" : ""), (url ? url : ""), (url ? ")" : ""));
 370
 371     if (res == -1)
 372     {
 373         *body = NULL;
 374         return 0;
 375     }
 376
 377     return (size_t)res;
 378 }
 379
 380
 381 /*****************************************************************************
 382  * High Level Functions: httpd_file_t
 383  *****************************************************************************/
 384 struct httpd_file_t
 385 {
 386     httpd_url_t *url;
 387
 388     char *psz_url;
 389     char *psz_mime;
 390
 391     httpd_file_callback_t pf_fill;
 392     httpd_file_sys_t      *p_sys;
 393
 394 };
 395
 396 static int
 397 httpd_FileCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
 398                     httpd_message_t *answer, const httpd_message_t *query )
 399 {
 400     httpd_file_t *file = (httpd_file_t*)p_sys;
 401     uint8_t **pp_body, *p_body;
 402     const char *psz_connection;
 403     int *pi_body, i_body;
 404
 405     if( answer == NULL || query == NULL )
 406     {
 407         return VLC_SUCCESS;
 408     }
 409     answer->i_proto  = HTTPD_PROTO_HTTP;
 410     answer->i_version= 1;
 411     answer->i_type   = HTTPD_MSG_ANSWER;
 412
 413     answer->i_status = 200;
 414
 415     httpd_MsgAdd( answer, "Content-type",  "%s", file->psz_mime );
 416     httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 417
 418     if( query->i_type != HTTPD_MSG_HEAD )
 419     {
 420         pp_body = &answer->p_body;
 421         pi_body = &answer->i_body;
 422     }
 423     else
 424     {
 425         /* The file still needs to be executed. */
 426         p_body = NULL;
 427         i_body = 0;
 428         pp_body = &p_body;
 429         pi_body = &i_body;
 430     }
 431
 432     if( query->i_type == HTTPD_MSG_POST )
 433     {
 434         /* msg_Warn not supported */
 435     }
 436
 437     uint8_t *psz_args = query->psz_args;
 438     file->pf_fill( file->p_sys, file, psz_args, pp_body, pi_body );
 439
 440     if( query->i_type == HTTPD_MSG_HEAD && p_body != NULL )
 441     {
 442         free( p_body );
 443     }
 444
 445     /* We respect client request */
 446     psz_connection = httpd_MsgGet( &cl->query, "Connection" );
 447     if( psz_connection != NULL )
 448     {
 449         httpd_MsgAdd( answer, "Connection", "%s", psz_connection );
 450     }
 451
 452     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
 453
 454     return VLC_SUCCESS;
 455 }
 456
 457 httpd_file_t *httpd_FileNew( httpd_host_t *host,
 458                              const char *psz_url, const char *psz_mime,
 459                              const char *psz_user, const char *psz_password,
 460                              const vlc_acl_t *p_acl, httpd_file_callback_t pf_fill,
 461                              httpd_file_sys_t *p_sys )
 462 {
 463     httpd_file_t *file = malloc( sizeof( httpd_file_t ) );
 464
 465     if( ( file->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 466                                           psz_password, p_acl )
 467         ) == NULL )
 468     {
 469         free( file );
 470         return NULL;
 471     }
 472
 473     file->psz_url  = strdup( psz_url );
 474     if( psz_mime && *psz_mime )
 475     {
 476         file->psz_mime = strdup( psz_mime );
 477     }
 478     else
 479     {
 480         file->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
 481     }
 482
 483     file->pf_fill = pf_fill;
 484     file->p_sys   = p_sys;
 485
 486     httpd_UrlCatch( file->url, HTTPD_MSG_HEAD, httpd_FileCallBack,
 487                     (httpd_callback_sys_t*)file );
 488     httpd_UrlCatch( file->url, HTTPD_MSG_GET,  httpd_FileCallBack,
 489                     (httpd_callback_sys_t*)file );
 490     httpd_UrlCatch( file->url, HTTPD_MSG_POST, httpd_FileCallBack,
 491                     (httpd_callback_sys_t*)file );
 492
 493     return file;
 494 }
 495
 496 httpd_file_sys_t *httpd_FileDelete( httpd_file_t *file )
 497 {
 498     httpd_file_sys_t *p_sys = file->p_sys;
 499
 500     httpd_UrlDelete( file->url );
 501
 502     free( file->psz_url );
 503     free( file->psz_mime );
 504
 505     free( file );
 506
 507     return p_sys;
 508 }
 509
 510 /*****************************************************************************
 511  * High Level Functions: httpd_handler_t (for CGIs)
 512  *****************************************************************************/
 513 struct httpd_handler_t
 514 {
 515     httpd_url_t *url;
 516
 517     httpd_handler_callback_t pf_fill;
 518     httpd_handler_sys_t      *p_sys;
 519
 520 };
 521
 522 static int
 523 httpd_HandlerCallBack( httpd_callback_sys_t *p_sys, httpd_client_t *cl,
 524                        httpd_message_t *answer, const httpd_message_t *query )
 525 {
 526     httpd_handler_t *handler = (httpd_handler_t*)p_sys;
 527     char psz_remote_addr[NI_MAXNUMERICHOST];
 528
 529     if( answer == NULL || query == NULL )
 530     {
 531         return VLC_SUCCESS;
 532     }
 533     answer->i_proto  = HTTPD_PROTO_NONE;
 534     answer->i_type   = HTTPD_MSG_ANSWER;
 535
 536     /* We do it ourselves, thanks */
 537     answer->i_status = 0;
 538
 539     if( httpd_ClientIP( cl, psz_remote_addr ) == NULL )
 540         *psz_remote_addr = '\0';
 541
 542     uint8_t *psz_args = query->psz_args;
 543     handler->pf_fill( handler->p_sys, handler, query->psz_url, psz_args,
 544                       query->i_type, query->p_body, query->i_body,
 545                       psz_remote_addr, NULL,
 546                       &answer->p_body, &answer->i_body );
 547
 548     if( query->i_type == HTTPD_MSG_HEAD )
 549     {
 550         char *p = (char *)answer->p_body;
 551
 552         /* Looks for end of header (i.e. one empty line) */
 553         while ( (p = strchr( p, '\r' )) != NULL )
 554         {
 555             if( p[1] && p[1] == '\n' && p[2] && p[2] == '\r'
 556                  && p[3] && p[3] == '\n' )
 557             {
 558                 break;
 559             }
 560         }
 561
 562         if( p != NULL )
 563         {
 564             p[4] = '\0';
 565             answer->i_body = strlen((char*)answer->p_body) + 1;
 566             answer->p_body = realloc( answer->p_body, answer->i_body );
 567         }
 568     }
 569
 570     if( strncmp( (char *)answer->p_body, "HTTP/1.", 7 ) )
 571     {
 572         int i_status, i_headers;
 573         char *psz_headers, *psz_new;
 574         const char *psz_status;
 575
 576         if( !strncmp( (char *)answer->p_body, "Status: ", 8 ) )
 577         {
 578             /* Apache-style */
 579             i_status = strtol( (char *)&answer->p_body[8], &psz_headers, 0 );
 580             if( *psz_headers ) psz_headers++;
 581             if( *psz_headers ) psz_headers++;
 582             i_headers = answer->i_body - (psz_headers - (char *)answer->p_body);
 583         }
 584         else
 585         {
 586             i_status = 200;
 587             psz_headers = (char *)answer->p_body;
 588             i_headers = answer->i_body;
 589         }
 590
 591         psz_status = httpd_ReasonFromCode( i_status );
 592         answer->i_body = sizeof("HTTP/1.0 xxx \r\n")
 593                         + strlen(psz_status) + i_headers - 1;
 594         psz_new = (char *)malloc( answer->i_body + 1);
 595         sprintf( psz_new, "HTTP/1.0 %03d %s\r\n", i_status, psz_status );
 596         memcpy( &psz_new[strlen(psz_new)], psz_headers, i_headers );
 597         free( answer->p_body );
 598         answer->p_body = (uint8_t *)psz_new;
 599     }
 600
 601     return VLC_SUCCESS;
 602 }
 603
 604 httpd_handler_t *httpd_HandlerNew( httpd_host_t *host, const char *psz_url,
 605                                    const char *psz_user,
 606                                    const char *psz_password,
 607                                    const vlc_acl_t *p_acl,
 608                                    httpd_handler_callback_t pf_fill,
 609                                    httpd_handler_sys_t *p_sys )
 610 {
 611     httpd_handler_t *handler = malloc( sizeof( httpd_handler_t ) );
 612
 613     if( ( handler->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 614                                              psz_password, p_acl )
 615         ) == NULL )
 616     {
 617         free( handler );
 618         return NULL;
 619     }
 620
 621     handler->pf_fill = pf_fill;
 622     handler->p_sys   = p_sys;
 623
 624     httpd_UrlCatch( handler->url, HTTPD_MSG_HEAD, httpd_HandlerCallBack,
 625                     (httpd_callback_sys_t*)handler );
 626     httpd_UrlCatch( handler->url, HTTPD_MSG_GET,  httpd_HandlerCallBack,
 627                     (httpd_callback_sys_t*)handler );
 628     httpd_UrlCatch( handler->url, HTTPD_MSG_POST, httpd_HandlerCallBack,
 629                     (httpd_callback_sys_t*)handler );
 630
 631     return handler;
 632 }
 633
 634 httpd_handler_sys_t *httpd_HandlerDelete( httpd_handler_t *handler )
 635 {
 636     httpd_handler_sys_t *p_sys = handler->p_sys;
 637     httpd_UrlDelete( handler->url );
 638     free( handler );
 639     return p_sys;
 640 }
 641
 642 /*****************************************************************************
 643  * High Level Functions: httpd_redirect_t
 644  *****************************************************************************/
 645 struct httpd_redirect_t
 646 {
 647     httpd_url_t *url;
 648     char        *psz_dst;
 649 };
 650
 651 static int httpd_RedirectCallBack( httpd_callback_sys_t *p_sys,
 652                                    httpd_client_t *cl, httpd_message_t *answer,
 653                                    const httpd_message_t *query )
 654 {
 655     httpd_redirect_t *rdir = (httpd_redirect_t*)p_sys;
 656     char *p_body;
 657     (void)cl;
 658
 659     if( answer == NULL || query == NULL )
 660     {
 661         return VLC_SUCCESS;
 662     }
 663     answer->i_proto  = HTTPD_PROTO_HTTP;
 664     answer->i_version= 1;
 665     answer->i_type   = HTTPD_MSG_ANSWER;
 666     answer->i_status = 301;
 667
 668     answer->i_body = httpd_HtmlError (&p_body, 301, rdir->psz_dst);
 669     answer->p_body = (unsigned char *)p_body;
 670
 671     /* XXX check if it's ok or we need to set an absolute url */
 672     httpd_MsgAdd( answer, "Location",  "%s", rdir->psz_dst );
 673
 674     httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
 675
 676     return VLC_SUCCESS;
 677 }
 678
 679 httpd_redirect_t *httpd_RedirectNew( httpd_host_t *host, const char *psz_url_dst,
 680                                      const char *psz_url_src )
 681 {
 682     httpd_redirect_t *rdir = malloc( sizeof( httpd_redirect_t ) );
 683
 684     if( !( rdir->url = httpd_UrlNewUnique( host, psz_url_src, NULL, NULL, NULL ) ) )
 685     {
 686         free( rdir );
 687         return NULL;
 688     }
 689     rdir->psz_dst = strdup( psz_url_dst );
 690
 691     /* Redirect apply for all HTTP request and RTSP DESCRIBE resquest */
 692     httpd_UrlCatch( rdir->url, HTTPD_MSG_HEAD, httpd_RedirectCallBack,
 693                     (httpd_callback_sys_t*)rdir );
 694     httpd_UrlCatch( rdir->url, HTTPD_MSG_GET, httpd_RedirectCallBack,
 695                     (httpd_callback_sys_t*)rdir );
 696     httpd_UrlCatch( rdir->url, HTTPD_MSG_POST, httpd_RedirectCallBack,
 697                     (httpd_callback_sys_t*)rdir );
 698     httpd_UrlCatch( rdir->url, HTTPD_MSG_DESCRIBE, httpd_RedirectCallBack,
 699                     (httpd_callback_sys_t*)rdir );
 700
 701     return rdir;
 702 }
 703 void httpd_RedirectDelete( httpd_redirect_t *rdir )
 704 {
 705     httpd_UrlDelete( rdir->url );
 706     free( rdir->psz_dst );
 707     free( rdir );
 708 }
 709
 710 /*****************************************************************************
 711  * High Level Funtions: httpd_stream_t
 712  *****************************************************************************/
 713 struct httpd_stream_t
 714 {
 715     vlc_mutex_t lock;
 716     httpd_url_t *url;
 717
 718     char    *psz_mime;
 719
 720     /* Header to send as first packet */
 721     uint8_t *p_header;
 722     int     i_header;
 723
 724     /* circular buffer */
 725     int         i_buffer_size;      /* buffer size, can't be reallocated smaller */
 726     uint8_t     *p_buffer;          /* buffer */
 727     int64_t     i_buffer_pos;       /* absolute position from begining */
 728     int64_t     i_buffer_last_pos;  /* a new connection will start with that */
 729 };
 730
 731 static int httpd_StreamCallBack( httpd_callback_sys_t *p_sys,
 732                                  httpd_client_t *cl, httpd_message_t *answer,
 733                                  const httpd_message_t *query )
 734 {
 735     httpd_stream_t *stream = (httpd_stream_t*)p_sys;
 736
 737     if( answer == NULL || query == NULL || cl == NULL )
 738     {
 739         return VLC_SUCCESS;
 740     }
 741
 742     if( answer->i_body_offset > 0 )
 743     {
 744         int64_t i_write;
 745         int     i_pos;
 746
 747 #if 0
 748         fprintf( stderr, "httpd_StreamCallBack i_body_offset=%lld\n",
 749                  answer->i_body_offset );
 750 #endif
 751
 752         if( answer->i_body_offset >= stream->i_buffer_pos )
 753         {
 754             /* fprintf( stderr, "httpd_StreamCallBack: no data\n" ); */
 755             return VLC_EGENERIC;    /* wait, no data available */
 756         }
 757         if( answer->i_body_offset + stream->i_buffer_size <
 758             stream->i_buffer_pos )
 759         {
 760             /* this client isn't fast enough */
 761 #if 0
 762             fprintf( stderr, "fixing i_body_offset (old=%lld new=%lld)\n",
 763                      answer->i_body_offset, stream->i_buffer_last_pos );
 764 #endif
 765             answer->i_body_offset = stream->i_buffer_last_pos;
 766         }
 767
 768         i_pos   = answer->i_body_offset % stream->i_buffer_size;
 769         i_write = stream->i_buffer_pos - answer->i_body_offset;
 770         if( i_write > HTTPD_CL_BUFSIZE )
 771         {
 772             i_write = HTTPD_CL_BUFSIZE;
 773         }
 774         else if( i_write <= 0 )
 775         {
 776             return VLC_EGENERIC;    /* wait, no data available */
 777         }
 778
 779         /* Don't go past the end of the circular buffer */
 780         i_write = __MIN( i_write, stream->i_buffer_size - i_pos );
 781
 782         /* using HTTPD_MSG_ANSWER -> data available */
 783         answer->i_proto  = HTTPD_PROTO_HTTP;
 784         answer->i_version= 0;
 785         answer->i_type   = HTTPD_MSG_ANSWER;
 786
 787         answer->i_body = i_write;
 788         answer->p_body = malloc( i_write );
 789         memcpy( answer->p_body, &stream->p_buffer[i_pos], i_write );
 790
 791         answer->i_body_offset += i_write;
 792
 793         return VLC_SUCCESS;
 794     }
 795     else
 796     {
 797         answer->i_proto  = HTTPD_PROTO_HTTP;
 798         answer->i_version= 0;
 799         answer->i_type   = HTTPD_MSG_ANSWER;
 800
 801         answer->i_status = 200;
 802
 803         if( query->i_type != HTTPD_MSG_HEAD )
 804         {
 805             httpd_ClientModeStream( cl );
 806             vlc_mutex_lock( &stream->lock );
 807             /* Send the header */
 808             if( stream->i_header > 0 )
 809             {
 810                 answer->i_body = stream->i_header;
 811                 answer->p_body = malloc( stream->i_header );
 812                 memcpy( answer->p_body, stream->p_header, stream->i_header );
 813             }
 814             answer->i_body_offset = stream->i_buffer_last_pos;
 815             vlc_mutex_unlock( &stream->lock );
 816         }
 817         else
 818         {
 819             httpd_MsgAdd( answer, "Content-Length", "%d", 0 );
 820             answer->i_body_offset = 0;
 821         }
 822
 823         if( !strcmp( stream->psz_mime, "video/x-ms-asf-stream" ) )
 824         {
 825             bool b_xplaystream = false;
 826             int i;
 827
 828             httpd_MsgAdd( answer, "Content-type", "%s",
 829                           "application/octet-stream" );
 830             httpd_MsgAdd( answer, "Server", "Cougar 4.1.0.3921" );
 831             httpd_MsgAdd( answer, "Pragma", "no-cache" );
 832             httpd_MsgAdd( answer, "Pragma", "client-id=%d", rand()&0x7fff );
 833             httpd_MsgAdd( answer, "Pragma", "features=\"broadcast\"" );
 834
 835             /* Check if there is a xPlayStrm=1 */
 836             for( i = 0; i < query->i_name; i++ )
 837             {
 838                 if( !strcasecmp( query->name[i],  "Pragma" ) &&
 839                     strstr( query->value[i], "xPlayStrm=1" ) )
 840                 {
 841                     b_xplaystream = true;
 842                 }
 843             }
 844
 845             if( !b_xplaystream )
 846             {
 847                 answer->i_body_offset = 0;
 848             }
 849         }
 850         else
 851         {
 852             httpd_MsgAdd( answer, "Content-type",  "%s", stream->psz_mime );
 853         }
 854         httpd_MsgAdd( answer, "Cache-Control", "%s", "no-cache" );
 855         return VLC_SUCCESS;
 856     }
 857 }
 858
 859 httpd_stream_t *httpd_StreamNew( httpd_host_t *host,
 860                                  const char *psz_url, const char *psz_mime,
 861                                  const char *psz_user, const char *psz_password,
 862                                  const vlc_acl_t *p_acl )
 863 {
 864     httpd_stream_t *stream = malloc( sizeof( httpd_stream_t ) );
 865
 866     if( ( stream->url = httpd_UrlNewUnique( host, psz_url, psz_user,
 867                                             psz_password, p_acl )
 868         ) == NULL )
 869     {
 870         free( stream );
 871         return NULL;
 872     }
 873     vlc_mutex_init( &stream->lock );
 874     if( psz_mime && *psz_mime )
 875     {
 876         stream->psz_mime = strdup( psz_mime );
 877     }
 878     else
 879     {
 880         stream->psz_mime = strdup( httpd_MimeFromUrl( psz_url ) );
 881     }
 882     stream->i_header = 0;
 883     stream->p_header = NULL;
 884     stream->i_buffer_size = 5000000;    /* 5 Mo per stream */
 885     stream->p_buffer = malloc( stream->i_buffer_size );
 886     /* We set to 1 to make life simpler
 887      * (this way i_body_offset can never be 0) */
 888     stream->i_buffer_pos = 1;
 889     stream->i_buffer_last_pos = 1;
 890
 891     httpd_UrlCatch( stream->url, HTTPD_MSG_HEAD, httpd_StreamCallBack,
 892                     (httpd_callback_sys_t*)stream );
 893     httpd_UrlCatch( stream->url, HTTPD_MSG_GET, httpd_StreamCallBack,
 894                     (httpd_callback_sys_t*)stream );
 895     httpd_UrlCatch( stream->url, HTTPD_MSG_POST, httpd_StreamCallBack,
 896                     (httpd_callback_sys_t*)stream );
 897
 898     return stream;
 899 }
 900
 901 int httpd_StreamHeader( httpd_stream_t *stream, uint8_t *p_data, int i_data )
 902 {
 903     vlc_mutex_lock( &stream->lock );
 904     free( stream->p_header );
 905     stream->p_header = NULL;
 906
 907     stream->i_header = i_data;
 908     if( i_data > 0 )
 909     {
 910         stream->p_header = malloc( i_data );
 911         memcpy( stream->p_header, p_data, i_data );
 912     }
 913     vlc_mutex_unlock( &stream->lock );
 914
 915     return VLC_SUCCESS;
 916 }
 917
 918 int httpd_StreamSend( httpd_stream_t *stream, uint8_t *p_data, int i_data )
 919 {
 920     int i_count;
 921     int i_pos;
 922
 923     if( i_data < 0 || p_data == NULL )
 924     {
 925         return VLC_SUCCESS;
 926     }
 927     vlc_mutex_lock( &stream->lock );
 928
 929     /* save this pointer (to be used by new connection) */
 930     stream->i_buffer_last_pos = stream->i_buffer_pos;
 931
 932     i_pos = stream->i_buffer_pos % stream->i_buffer_size;
 933     i_count = i_data;
 934     while( i_count > 0)
 935     {
 936         int i_copy;
 937
 938         i_copy = __MIN( i_count, stream->i_buffer_size - i_pos );
 939
 940         /* Ok, we can't go past the end of our buffer */
 941         memcpy( &stream->p_buffer[i_pos], p_data, i_copy );
 942
 943         i_pos = ( i_pos + i_copy ) % stream->i_buffer_size;
 944         i_count -= i_copy;
 945         p_data  += i_copy;
 946     }
 947
 948     stream->i_buffer_pos += i_data;
 949
 950     vlc_mutex_unlock( &stream->lock );
 951     return VLC_SUCCESS;
 952 }
 953
 954 void httpd_StreamDelete( httpd_stream_t *stream )
 955 {
 956     httpd_UrlDelete( stream->url );
 957     vlc_mutex_destroy( &stream->lock );
 958     free( stream->psz_mime );
 959     free( stream->p_header );
 960     free( stream->p_buffer );
 961     free( stream );
 962 }
 963
 964 /*****************************************************************************
 965  * Low level
 966  *****************************************************************************/
 967 static void* httpd_HostThread( void * );
 968
 969 /* create a new host */
 970 httpd_host_t *httpd_HostNew( vlc_object_t *p_this, const char *psz_host,
 971                              int i_port )
 972 {
 973     return httpd_TLSHostNew( p_this, psz_host, i_port, NULL, NULL, NULL, NULL
 974                            );
 975 }
 976
 977 static const char psz_object_type[] = "http server";
 978 static vlc_mutex_t httpd_mutex = VLC_STATIC_MUTEX;
 979
 980 httpd_host_t *httpd_TLSHostNew( vlc_object_t *p_this, const char *psz_hostname,
 981                                 int i_port,
 982                                 const char *psz_cert, const char *psz_key,
 983                                 const char *psz_ca, const char *psz_crl )
 984 {
 985     httpd_t      *httpd;
 986     httpd_host_t *host;
 987     tls_server_t *p_tls;
 988     char *psz_host;
 989     vlc_value_t  ptrval;
 990     int i;
 991
 992     if( psz_hostname == NULL )
 993         psz_hostname = "";
 994
 995     psz_host = strdup( psz_hostname );
 996     if( psz_host == NULL )
 997         return NULL;
 998
 999     /* to be sure to avoid multiple creation */
1000     vlc_mutex_lock( &httpd_mutex );
1001     httpd = libvlc_priv (p_this->p_libvlc)->p_httpd;
1002
1003     if( httpd == NULL )
1004     {
1005         msg_Info( p_this, "creating httpd" );
1006         httpd = (httpd_t *)vlc_custom_create( p_this, sizeof (*httpd),
1007                                               VLC_OBJECT_GENERIC,
1008                                               psz_object_type );
1009         if( httpd == NULL )
1010         {
1011             vlc_mutex_unlock( &httpd_mutex );
1012             free( psz_host );
1013             return NULL;
1014         }
1015
1016         httpd->i_host = 0;
1017         httpd->host   = NULL;
1018
1019         ptrval.p_address = httpd;
1020         libvlc_priv (p_this->p_libvlc)->p_httpd = httpd;
1021         vlc_object_attach( httpd, p_this->p_libvlc );
1022     }
1023
1024     /* verify if it already exist */
1025     for( i = httpd->i_host - 1; i >= 0; i-- )
1026     {
1027         host = httpd->host[i];
1028
1029         /* cannot mix TLS and non-TLS hosts */
1030         if( ( ( httpd->host[i]->p_tls != NULL ) != ( psz_cert != NULL ) )
1031          || ( host->i_port != i_port )
1032          || strcmp( host->psz_hostname, psz_hostname ) )
1033             continue;
1034
1035         /* Increase existing matching host reference count.
1036          * The reference count is written under both the global httpd and the
1037          * host lock. It is read with either or both locks held. The global
1038          * lock is always acquired first. */
1039         vlc_mutex_lock( &host->lock );
1040         host->i_ref++;
1041         vlc_mutex_unlock( &host->lock );
1042
1043         vlc_mutex_unlock( &httpd_mutex );
1044         return host;
1045     }
1046
1047     host = NULL;
1048
1049     /* determine TLS configuration */
1050     if ( psz_cert != NULL )
1051     {
1052         p_tls = tls_ServerCreate( p_this, psz_cert, psz_key );
1053         if ( p_tls == NULL )
1054         {
1055             msg_Err( p_this, "TLS initialization error" );
1056             goto error;
1057         }
1058
1059         if ( ( psz_ca != NULL) && tls_ServerAddCA( p_tls, psz_ca ) )
1060         {
1061             msg_Err( p_this, "TLS CA error" );
1062             goto error;
1063         }
1064
1065         if ( ( psz_crl != NULL) && tls_ServerAddCRL( p_tls, psz_crl ) )
1066         {
1067             msg_Err( p_this, "TLS CRL error" );
1068             goto error;
1069         }
1070     }
1071     else
1072         p_tls = NULL;
1073
1074     /* create the new host */
1075     host = (httpd_host_t *)vlc_custom_create( p_this, sizeof (*host),
1076                                               VLC_OBJECT_GENERIC,
1077                                               psz_object_type );
1078     if (host == NULL)
1079         goto error;
1080
1081     host->httpd = httpd;
1082     vlc_mutex_init( &host->lock );
1083     vlc_cond_init( &host->wait );
1084     host->i_ref = 1;
1085
1086     host->fds = net_ListenTCP( p_this, psz_host, i_port );
1087     if( host->fds == NULL )
1088     {
1089         msg_Err( p_this, "cannot create socket(s) for HTTP host" );
1090         goto error;
1091     }
1092     for (host->nfd = 0; host->fds[host->nfd] != -1; host->nfd++);
1093
1094     if( vlc_object_waitpipe( VLC_OBJECT( host ) ) == -1 )
1095     {
1096         msg_Err( host, "signaling pipe error: %m" );
1097         goto error;
1098     }
1099
1100     host->i_port = i_port;
1101     host->psz_hostname = psz_host;
1102
1103     host->i_url     = 0;
1104     host->url       = NULL;
1105     host->i_client  = 0;
1106     host->client    = NULL;
1107
1108     host->p_tls = p_tls;
1109
1110     /* create the thread */
1111     if( vlc_clone( &host->thread, httpd_HostThread, host,
1112                    VLC_THREAD_PRIORITY_LOW ) )
1113     {
1114         msg_Err( p_this, "cannot spawn http host thread" );
1115         goto error;
1116     }
1117
1118     /* now add it to httpd */
1119     TAB_APPEND( httpd->i_host, httpd->host, host );
1120     vlc_mutex_unlock( &httpd_mutex );
1121
1122     return host;
1123
1124 error:
1125     free( psz_host );
1126     if( httpd->i_host <= 0 )
1127     {
1128         libvlc_priv (httpd->p_libvlc)->p_httpd = NULL;
1129         vlc_object_detach( httpd );
1130         vlc_object_release( httpd );
1131     }
1132     vlc_mutex_unlock( &httpd_mutex );
1133
1134     if( host != NULL )
1135     {
1136         net_ListenClose( host->fds );
1137         vlc_cond_destroy( &host->wait );
1138         vlc_mutex_destroy( &host->lock );
1139         vlc_object_release( host );
1140     }
1141
1142     if( p_tls != NULL )
1143         tls_ServerDelete( p_tls );
1144
1145     return NULL;
1146 }
1147
1148 /* delete a host */
1149 void httpd_HostDelete( httpd_host_t *host )
1150 {
1151     httpd_t *httpd = host->httpd;
1152     int i;
1153
1154     vlc_mutex_lock( &httpd_mutex );
1155
1156     vlc_mutex_lock( &host->lock );
1157     host->i_ref--;
1158     if( host->i_ref == 0 )
1159         vlc_cond_signal( &host->wait );
1160     vlc_mutex_unlock( &host->lock );
1161     if( host->i_ref > 0 )
1162     {
1163         /* still used */
1164         vlc_mutex_unlock( &httpd_mutex );
1165         msg_Dbg( host, "httpd_HostDelete: host still in use" );
1166         return;
1167     }
1168     TAB_REMOVE( httpd->i_host, httpd->host, host );
1169
1170     vlc_object_kill( host );
1171     vlc_join( host->thread, NULL );
1172
1173     msg_Dbg( host, "HTTP host removed" );
1174
1175     for( i = 0; i < host->i_url; i++ )
1176     {
1177         msg_Err( host, "url still registered: %s", host->url[i]->psz_url );
1178     }
1179     for( i = 0; i < host->i_client; i++ )
1180     {
1181         httpd_client_t *cl = host->client[i];
1182         msg_Warn( host, "client still connected" );
1183         httpd_ClientClean( cl );
1184         TAB_REMOVE( host->i_client, host->client, cl );
1185         free( cl );
1186         i--;
1187         /* TODO */
1188     }
1189
1190     if( host->p_tls != NULL)
1191         tls_ServerDelete( host->p_tls );
1192
1193     net_ListenClose( host->fds );
1194     free( host->psz_hostname );
1195
1196     vlc_cond_destroy( &host->wait );
1197     vlc_mutex_destroy( &host->lock );
1198     vlc_object_release( host );
1199
1200     if( httpd->i_host <= 0 )
1201     {
1202         msg_Dbg( httpd, "no hosts left, stopping httpd" );
1203
1204         libvlc_priv (httpd->p_libvlc)->p_httpd = NULL;
1205         vlc_object_detach( httpd );
1206         vlc_object_release( httpd );
1207     }
1208     vlc_mutex_unlock( &httpd_mutex );
1209 }
1210
1211 /* register a new url */
1212 static httpd_url_t *httpd_UrlNewPrivate( httpd_host_t *host, const char *psz_url,
1213                                          const char *psz_user, const char *psz_password,
1214                                          const vlc_acl_t *p_acl, bool b_check )
1215 {
1216     httpd_url_t *url;
1217     int         i;
1218
1219     assert( psz_url != NULL );
1220
1221     vlc_mutex_lock( &host->lock );
1222     if( b_check )
1223     {
1224         for( i = 0; i < host->i_url; i++ )
1225         {
1226             if( !strcmp( psz_url, host->url[i]->psz_url ) )
1227             {
1228                 msg_Warn( host->httpd,
1229                           "cannot add '%s' (url already defined)", psz_url );
1230                 vlc_mutex_unlock( &host->lock );
1231                 return NULL;
1232             }
1233         }
1234     }
1235
1236     url = malloc( sizeof( httpd_url_t ) );
1237     url->host = host;
1238
1239     vlc_mutex_init( &url->lock );
1240     url->psz_url = strdup( psz_url );
1241     url->psz_user = strdup( psz_user ? psz_user : "" );
1242     url->psz_password = strdup( psz_password ? psz_password : "" );
1243     url->p_acl = ACL_Duplicate( host, p_acl );
1244     for( i = 0; i < HTTPD_MSG_MAX; i++ )
1245     {
1246         url->catch[i].cb = NULL;
1247         url->catch[i].p_sys = NULL;
1248     }
1249
1250     TAB_APPEND( host->i_url, host->url, url );
1251     vlc_cond_signal( &host->wait );
1252     vlc_mutex_unlock( &host->lock );
1253
1254     return url;
1255 }
1256
1257 httpd_url_t *httpd_UrlNew( httpd_host_t *host, const char *psz_url,
1258                            const char *psz_user, const char *psz_password,
1259                            const vlc_acl_t *p_acl )
1260 {
1261     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1262                                 psz_password, p_acl, false );
1263 }
1264
1265 httpd_url_t *httpd_UrlNewUnique( httpd_host_t *host, const char *psz_url,
1266                                  const char *psz_user, const char *psz_password,
1267                                  const vlc_acl_t *p_acl )
1268 {
1269     return httpd_UrlNewPrivate( host, psz_url, psz_user,
1270                                 psz_password, p_acl, true );
1271 }
1272
1273 /* register callback on a url */
1274 int httpd_UrlCatch( httpd_url_t *url, int i_msg, httpd_callback_t cb,
1275                     httpd_callback_sys_t *p_sys )
1276 {
1277     vlc_mutex_lock( &url->lock );
1278     url->catch[i_msg].cb   = cb;
1279     url->catch[i_msg].p_sys= p_sys;
1280     vlc_mutex_unlock( &url->lock );
1281
1282     return VLC_SUCCESS;
1283 }
1284
1285 /* delete an url */
1286 void httpd_UrlDelete( httpd_url_t *url )
1287 {
1288     httpd_host_t *host = url->host;
1289     int          i;
1290
1291     vlc_mutex_lock( &host->lock );
1292     TAB_REMOVE( host->i_url, host->url, url );
1293
1294     vlc_mutex_destroy( &url->lock );
1295     free( url->psz_url );
1296     free( url->psz_user );
1297     free( url->psz_password );
1298     ACL_Destroy( url->p_acl );
1299
1300     for( i = 0; i < host->i_client; i++ )
1301     {
1302         httpd_client_t *client = host->client[i];
1303
1304         if( client->url == url )
1305         {
1306             /* TODO complete it */
1307             msg_Warn( host, "force closing connections" );
1308             httpd_ClientClean( client );
1309             TAB_REMOVE( host->i_client, host->client, client );
1310             free( client );
1311             i--;
1312         }
1313     }
1314     free( url );
1315     vlc_mutex_unlock( &host->lock );
1316 }
1317
1318 static void httpd_MsgInit( httpd_message_t *msg )
1319 {
1320     msg->cl         = NULL;
1321     msg->i_type     = HTTPD_MSG_NONE;
1322     msg->i_proto    = HTTPD_PROTO_NONE;
1323     msg->i_version  = -1; /* FIXME */
1324
1325     msg->i_status   = 0;
1326
1327     msg->psz_url    = NULL;
1328     msg->psz_args   = NULL;
1329
1330     msg->i_channel  = -1;
1331
1332     msg->i_name     = 0;
1333     msg->name       = NULL;
1334     msg->i_value    = 0;
1335     msg->value      = NULL;
1336
1337     msg->i_body_offset = 0;
1338     msg->i_body        = 0;
1339     msg->p_body        = NULL;
1340 }
1341
1342 static void httpd_MsgClean( httpd_message_t *msg )
1343 {
1344     int i;
1345
1346     free( msg->psz_url );
1347     free( msg->psz_args );
1348     for( i = 0; i < msg->i_name; i++ )
1349     {
1350         free( msg->name[i] );
1351         free( msg->value[i] );
1352     }
1353     free( msg->name );
1354     free( msg->value );
1355     free( msg->p_body );
1356     httpd_MsgInit( msg );
1357 }
1358
1359 const char *httpd_MsgGet( const httpd_message_t *msg, const char *name )
1360 {
1361     int i;
1362
1363     for( i = 0; i < msg->i_name; i++ )
1364     {
1365         if( !strcasecmp( msg->name[i], name ))
1366         {
1367             return msg->value[i];
1368         }
1369     }
1370     return NULL;
1371 }
1372
1373 void httpd_MsgAdd( httpd_message_t *msg, const char *name, const char *psz_value, ... )
1374 {
1375     va_list args;
1376     char *value = NULL;
1377
1378     va_start( args, psz_value );
1379     if( vasprintf( &value, psz_value, args ) == -1 )
1380         value = NULL;
1381     va_end( args );
1382
1383     if( value == NULL )
1384         return;
1385
1386     name = strdup( name );
1387     if( name == NULL )
1388     {
1389         free( value );
1390         return;
1391     }
1392
1393     TAB_APPEND( msg->i_name,  msg->name,  (char*)name );
1394     TAB_APPEND( msg->i_value, msg->value, value );
1395 }
1396
1397 static void httpd_ClientInit( httpd_client_t *cl, mtime_t now )
1398 {
1399     cl->i_state = HTTPD_CLIENT_RECEIVING;
1400     cl->i_activity_date = now;
1401     cl->i_activity_timeout = INT64_C(10000000);
1402     cl->i_buffer_size = HTTPD_CL_BUFSIZE;
1403     cl->i_buffer = 0;
1404     cl->p_buffer = malloc( cl->i_buffer_size );
1405     cl->i_mode   = HTTPD_CLIENT_FILE;
1406     cl->b_read_waiting = false;
1407
1408     httpd_MsgInit( &cl->query );
1409     httpd_MsgInit( &cl->answer );
1410 }
1411
1412 void httpd_ClientModeStream( httpd_client_t *cl )
1413 {
1414     cl->i_mode   = HTTPD_CLIENT_STREAM;
1415 }
1416
1417 void httpd_ClientModeBidir( httpd_client_t *cl )
1418 {
1419     cl->i_mode   = HTTPD_CLIENT_BIDIR;
1420 }
1421
1422 char* httpd_ClientIP( const httpd_client_t *cl, char *psz_ip )
1423 {
1424     return net_GetPeerAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1425 }
1426
1427 char* httpd_ServerIP( const httpd_client_t *cl, char *psz_ip )
1428 {
1429     return net_GetSockAddress( cl->fd, psz_ip, NULL ) ? NULL : psz_ip;
1430 }
1431
1432 static void httpd_ClientClean( httpd_client_t *cl )
1433 {
1434     if( cl->fd >= 0 )
1435     {
1436         if( cl->p_tls != NULL )
1437             tls_ServerSessionClose( cl->p_tls );
1438         net_Close( cl->fd );
1439         cl->fd = -1;
1440     }
1441
1442     httpd_MsgClean( &cl->answer );
1443     httpd_MsgClean( &cl->query );
1444
1445     free( cl->p_buffer );
1446     cl->p_buffer = NULL;
1447 }
1448
1449 static httpd_client_t *httpd_ClientNew( int fd, tls_session_t *p_tls, mtime_t now )
1450 {
1451     httpd_client_t *cl = malloc( sizeof( httpd_client_t ) );
1452
1453     if( !cl ) return NULL;
1454
1455     cl->i_ref   = 0;
1456     cl->fd      = fd;
1457     cl->url     = NULL;
1458     cl->p_tls = p_tls;
1459
1460     httpd_ClientInit( cl, now );
1461
1462     return cl;
1463 }
1464
1465 static
1466 ssize_t httpd_NetRecv (httpd_client_t *cl, uint8_t *p, size_t i_len)
1467 {
1468     tls_session_t *p_tls;
1469     ssize_t val;
1470
1471     p_tls = cl->p_tls;
1472     do
1473         val = p_tls ? tls_Recv (p_tls, p, i_len)
1474                     : recv (cl->fd, p, i_len, 0);
1475     while (val == -1 && errno == EINTR);
1476     return val;
1477 }
1478
1479 static
1480 ssize_t httpd_NetSend (httpd_client_t *cl, const uint8_t *p, size_t i_len)
1481 {
1482     tls_session_t *p_tls;
1483     ssize_t val;
1484
1485     p_tls = cl->p_tls;
1486     do
1487         val = p_tls ? tls_Send( p_tls, p, i_len )
1488                     : send (cl->fd, p, i_len, 0);
1489     while (val == -1 && errno == EINTR);
1490     return val;
1491 }
1492
1493
1494 static const struct
1495 {
1496     const char name[16];
1497     int  i_type;
1498     int  i_proto;
1499 }
1500 msg_type[] =
1501 {
1502     { "OPTIONS",       HTTPD_MSG_OPTIONS,      HTTPD_PROTO_RTSP },
1503     { "DESCRIBE",      HTTPD_MSG_DESCRIBE,     HTTPD_PROTO_RTSP },
1504     { "SETUP",         HTTPD_MSG_SETUP,        HTTPD_PROTO_RTSP },
1505     { "PLAY",          HTTPD_MSG_PLAY,         HTTPD_PROTO_RTSP },
1506     { "PAUSE",         HTTPD_MSG_PAUSE,        HTTPD_PROTO_RTSP },
1507     { "GET_PARAMETER", HTTPD_MSG_GETPARAMETER, HTTPD_PROTO_RTSP },
1508     { "TEARDOWN",      HTTPD_MSG_TEARDOWN,     HTTPD_PROTO_RTSP },
1509     { "GET",           HTTPD_MSG_GET,          HTTPD_PROTO_HTTP },
1510     { "HEAD",          HTTPD_MSG_HEAD,         HTTPD_PROTO_HTTP },
1511     { "POST",          HTTPD_MSG_POST,         HTTPD_PROTO_HTTP },
1512     { "",              HTTPD_MSG_NONE,         HTTPD_PROTO_NONE }
1513 };
1514
1515
1516 static void httpd_ClientRecv( httpd_client_t *cl )
1517 {
1518     int i_len;
1519
1520     /* ignore leading whites */
1521     if( ( cl->query.i_proto == HTTPD_PROTO_NONE ) &&
1522         ( cl->i_buffer == 0 ) )
1523     {
1524         unsigned char c;
1525
1526         i_len = httpd_NetRecv( cl, &c, 1 );
1527
1528         if( ( i_len > 0 ) && ( strchr( "\r\n\t ", c ) == NULL ) )
1529         {
1530             cl->p_buffer[0] = c;
1531             cl->i_buffer++;
1532         }
1533     }
1534     else
1535     if( cl->query.i_proto == HTTPD_PROTO_NONE )
1536     {
1537         /* enough to see if it's Interleaved RTP over RTSP or RTSP/HTTP */
1538         i_len = httpd_NetRecv( cl, &cl->p_buffer[cl->i_buffer],
1539                                7 - cl->i_buffer );
1540         if( i_len > 0 )
1541         {
1542             cl->i_buffer += i_len;
1543         }
1544
1545         if( ( cl->i_buffer >= 4 ) && ( cl->p_buffer[0] == '$' ) )
1546         {
1547             /* Interleaved RTP over RTSP */
1548             cl->query.i_proto = HTTPD_PROTO_RTSP;
1549             cl->query.i_type  = HTTPD_MSG_CHANNEL;
1550             cl->query.i_channel = cl->p_buffer[1];
1551             cl->query.i_body  = (cl->p_buffer[2] << 8)|cl->p_buffer[3];
1552             cl->query.p_body  = malloc( cl->query.i_body );
1553             cl->i_buffer      -= 4;
1554             memcpy( cl->query.p_body, cl->p_buffer + 4, cl->i_buffer );
1555         }
1556         else
1557         /* The smallest legal request is 7 bytes ("GET /\r\n"),
1558          * this is the maximum we can ask at this point. */
1559         if( cl->i_buffer >= 7 )
1560         {
1561             if( !memcmp( cl->p_buffer, "HTTP/1.", 7 ) )
1562             {
1563                 cl->query.i_proto = HTTPD_PROTO_HTTP;
1564                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1565             }
1566             else if( !memcmp( cl->p_buffer, "RTSP/1.", 7 ) )
1567             {
1568                 cl->query.i_proto = HTTPD_PROTO_RTSP;
1569                 cl->query.i_type  = HTTPD_MSG_ANSWER;
1570             }
1571             else
1572             {
1573                 /* We need the full request line to determine the protocol. */
1574                 cl->query.i_proto = HTTPD_PROTO_HTTP0;
1575                 cl->query.i_type  = HTTPD_MSG_NONE;
1576             }
1577         }
1578     }
1579     else if( cl->query.i_body > 0 )
1580     {
1581         /* we are reading the body of a request or a channel */
1582         i_len = httpd_NetRecv( cl, &cl->query.p_body[cl->i_buffer],
1583                                cl->query.i_body - cl->i_buffer );
1584         if( i_len > 0 )
1585         {
1586             cl->i_buffer += i_len;
1587         }
1588         if( cl->i_buffer >= cl->query.i_body )
1589         {
1590             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1591         }
1592     }
1593     else
1594     {
1595         /* we are reading a header -> char by char */
1596         for( ;; )
1597         {
1598             if( cl->i_buffer == cl->i_buffer_size )
1599             {
1600                 uint8_t *newbuf = realloc( cl->p_buffer, cl->i_buffer_size + 1024 );
1601                 if( newbuf == NULL )
1602                 {
1603                     i_len = 0;
1604                     break;
1605                 }
1606
1607                 cl->p_buffer = newbuf;
1608                 cl->i_buffer_size += 1024;
1609             }
1610
1611             i_len = httpd_NetRecv (cl, &cl->p_buffer[cl->i_buffer], 1 );
1612             if( i_len <= 0 )
1613             {
1614                 break;
1615             }
1616             cl->i_buffer++;
1617
1618             if( ( cl->query.i_proto == HTTPD_PROTO_HTTP0 )
1619              && ( cl->p_buffer[cl->i_buffer - 1] == '\n' ) )
1620             {
1621                 /* Request line is now complete */
1622                 const char *p = memchr( cl->p_buffer, ' ', cl->i_buffer );
1623                 size_t len;
1624
1625                 assert( cl->query.i_type == HTTPD_MSG_NONE );
1626
1627                 if( p == NULL ) /* no URI: evil guy */
1628                 {
1629                     i_len = 0; /* drop connection */
1630                     break;
1631                 }
1632
1633                 do
1634                     p++; /* skips extra spaces */
1635                 while( *p == ' ' );
1636
1637                 p = memchr( p, ' ', ((char *)cl->p_buffer) + cl->i_buffer - p );
1638                 if( p == NULL ) /* no explicit protocol: HTTP/0.9 */
1639                 {
1640                     i_len = 0; /* not supported currently -> drop */
1641                     break;
1642                 }
1643
1644                 do
1645                     p++; /* skips extra spaces ever again */
1646                 while( *p == ' ' );
1647
1648                 len = ((char *)cl->p_buffer) + cl->i_buffer - p;
1649                 if( len < 7 ) /* foreign protocol */
1650                     i_len = 0; /* I don't understand -> drop */
1651                 else
1652                 if( memcmp( p, "HTTP/1.", 7 ) == 0 )
1653                 {
1654                     cl->query.i_proto = HTTPD_PROTO_HTTP;
1655                     cl->query.i_version = atoi( p + 7 );
1656                 }
1657                 else
1658                 if( memcmp( p, "RTSP/1.", 7 ) == 0 )
1659                 {
1660                     cl->query.i_proto = HTTPD_PROTO_RTSP;
1661                     cl->query.i_version = atoi( p + 7 );
1662                 }
1663                 else
1664                 if( memcmp( p, "HTTP/", 5 ) == 0 )
1665                 {
1666                     const uint8_t sorry[] =
1667                        "HTTP/1.1 505 Unknown HTTP version\r\n\r\n";
1668                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1669                     i_len = 0; /* drop */
1670                 }
1671                 else
1672                 if( memcmp( p, "RTSP/", 5 ) == 0 )
1673                 {
1674                     const uint8_t sorry[] =
1675                         "RTSP/1.0 505 Unknown RTSP version\r\n\r\n";
1676                     httpd_NetSend( cl, sorry, sizeof( sorry ) - 1 );
1677                     i_len = 0; /* drop */
1678                 }
1679                 else /* yet another foreign protocol */
1680                     i_len = 0;
1681
1682                 if( i_len == 0 )
1683                     break;
1684             }
1685
1686             if( ( cl->i_buffer >= 2 && !memcmp( &cl->p_buffer[cl->i_buffer-2], "\n\n", 2 ) )||
1687                 ( cl->i_buffer >= 4 && !memcmp( &cl->p_buffer[cl->i_buffer-4], "\r\n\r\n", 4 ) ) )
1688             {
1689                 char *p;
1690
1691                 /* we have finished the header so parse it and set i_body */
1692                 cl->p_buffer[cl->i_buffer] = '\0';
1693
1694                 if( cl->query.i_type == HTTPD_MSG_ANSWER )
1695                 {
1696                     /* FIXME:
1697                      * assume strlen( "HTTP/1.x" ) = 8
1698                      */
1699                     cl->query.i_status =
1700                         strtol( (char *)&cl->p_buffer[8],
1701                                 &p, 0 );
1702                     while( *p == ' ' )
1703                         p++;
1704                 }
1705                 else
1706                 {
1707                     unsigned i;
1708
1709                     p = NULL;
1710                     cl->query.i_type = HTTPD_MSG_NONE;
1711
1712                     /*fprintf( stderr, "received new request=%s\n", cl->p_buffer);*/
1713
1714                     for( i = 0; msg_type[i].name[0]; i++ )
1715                     {
1716                         if( !strncmp( (char *)cl->p_buffer, msg_type[i].name,
1717                                       strlen( msg_type[i].name ) ) )
1718                         {
1719                             p = (char *)&cl->p_buffer[strlen(msg_type[i].name) + 1 ];
1720                             cl->query.i_type = msg_type[i].i_type;
1721                             if( cl->query.i_proto != msg_type[i].i_proto )
1722                             {
1723                                 p = NULL;
1724                                 cl->query.i_proto = HTTPD_PROTO_NONE;
1725                                 cl->query.i_type = HTTPD_MSG_NONE;
1726                             }
1727                             break;
1728                         }
1729                     }
1730                     if( p == NULL )
1731                     {
1732                         if( strstr( (char *)cl->p_buffer, "HTTP/1." ) )
1733                         {
1734                             cl->query.i_proto = HTTPD_PROTO_HTTP;
1735                         }
1736                         else if( strstr( (char *)cl->p_buffer, "RTSP/1." ) )
1737                         {
1738                             cl->query.i_proto = HTTPD_PROTO_RTSP;
1739                         }
1740                     }
1741                     else
1742                     {
1743                         char *p2;
1744                         char *p3;
1745
1746                         while( *p == ' ' )
1747                         {
1748                             p++;
1749                         }
1750                         p2 = strchr( p, ' ' );
1751                         if( p2 )
1752                         {
1753                             *p2++ = '\0';
1754                         }
1755                         if( !strncasecmp( p, ( cl->query.i_proto
1756                                    == HTTPD_PROTO_HTTP ) ? "http" : "rtsp", 4 )
1757                          && p[4 + !!strchr( "sS", p[4] )] == ':' )
1758                         {   /* Skip hier-part of URL (if present) */
1759                             p = strchr( p, ':' ) + 1; /* skip URI scheme */
1760                             if( !strncmp( p, "//", 2 ) ) /* skip authority */
1761                             {   /* see RFC3986 §3.2 */
1762                                 p += 2;
1763                                 while( *p && !strchr( "/?#", *p ) ) p++;
1764                             }
1765                         }
1766                         cl->query.psz_url = strdup( p );
1767                         if( ( p3 = strchr( cl->query.psz_url, '?' ) )  )
1768                         {
1769                             *p3++ = '\0';
1770                             cl->query.psz_args = (uint8_t *)strdup( p3 );
1771                         }
1772                         p = p2;
1773                     }
1774                 }
1775                 if( p )
1776                 {
1777                     p = strchr( p, '\n' );
1778                 }
1779                 if( p )
1780                 {
1781                     while( *p == '\n' || *p == '\r' )
1782                     {
1783                         p++;
1784                     }
1785                     while( p && *p != '\0' )
1786                     {
1787                         char *line = p;
1788                         char *eol = p = strchr( p, '\n' );
1789                         char *colon;
1790
1791                         while( eol && eol >= line && ( *eol == '\n' || *eol == '\r' ) )
1792                         {
1793                             *eol-- = '\0';
1794                         }
1795
1796                         if( ( colon = strchr( line, ':' ) ) )
1797                         {
1798                             char *name;
1799                             char *value;
1800
1801                             *colon++ = '\0';
1802                             while( *colon == ' ' )
1803                             {
1804                                 colon++;
1805                             }
1806                             name = strdup( line );
1807                             value = strdup( colon );
1808
1809                             TAB_APPEND( cl->query.i_name, cl->query.name, name );
1810                             TAB_APPEND( cl->query.i_value,cl->query.value,value);
1811
1812                             if( !strcasecmp( name, "Content-Length" ) )
1813                             {
1814                                 cl->query.i_body = atol( value );
1815                             }
1816                         }
1817
1818                         if( p )
1819                         {
1820                             p++;
1821                             while( *p == '\n' || *p == '\r' )
1822                             {
1823                                 p++;
1824                             }
1825                         }
1826                     }
1827                 }
1828                 if( cl->query.i_body > 0 )
1829                 {
1830                     /* TODO Mhh, handle the case client will only send a
1831                      * request and close the connection
1832                      * to mark and of body (probably only RTSP) */
1833                     cl->query.p_body = malloc( cl->query.i_body );
1834                     cl->i_buffer = 0;
1835                 }
1836                 else
1837                 {
1838                     cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1839                 }
1840             }
1841         }
1842     }
1843
1844     /* check if the client is to be set to dead */
1845 #if defined( WIN32 ) || defined( UNDER_CE )
1846     if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1847 #else
1848     if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1849 #endif
1850     {
1851         if( cl->query.i_proto != HTTPD_PROTO_NONE && cl->query.i_type != HTTPD_MSG_NONE )
1852         {
1853             /* connection closed -> end of data */
1854             if( cl->query.i_body > 0 )
1855             {
1856                 cl->query.i_body = cl->i_buffer;
1857             }
1858             cl->i_state = HTTPD_CLIENT_RECEIVE_DONE;
1859         }
1860         else
1861         {
1862             cl->i_state = HTTPD_CLIENT_DEAD;
1863         }
1864     }
1865
1866     /* XXX: for QT I have to disable timeout. Try to find why */
1867     if( cl->query.i_proto == HTTPD_PROTO_RTSP )
1868         cl->i_activity_timeout = 0;
1869
1870 #if 0 /* Debugging only */
1871     if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
1872     {
1873         int i;
1874
1875         fprintf( stderr, "received new request\n" );
1876         fprintf( stderr, "  - proto=%s\n",
1877                  cl->query.i_proto == HTTPD_PROTO_HTTP ? "HTTP" : "RTSP" );
1878         fprintf( stderr, "  - version=%d\n", cl->query.i_version );
1879         fprintf( stderr, "  - msg=%d\n", cl->query.i_type );
1880         if( cl->query.i_type == HTTPD_MSG_ANSWER )
1881         {
1882             fprintf( stderr, "  - answer=%d '%s'\n", cl->query.i_status,
1883                      cl->query.psz_status );
1884         }
1885         else if( cl->query.i_type != HTTPD_MSG_NONE )
1886         {
1887             fprintf( stderr, "  - url=%s\n", cl->query.psz_url );
1888         }
1889         for( i = 0; i < cl->query.i_name; i++ )
1890         {
1891             fprintf( stderr, "  - option name='%s' value='%s'\n",
1892                      cl->query.name[i], cl->query.value[i] );
1893         }
1894     }
1895 #endif
1896 }
1897
1898 static void httpd_ClientSend( httpd_client_t *cl )
1899 {
1900     int i;
1901     int i_len;
1902
1903     if( cl->i_buffer < 0 )
1904     {
1905         /* We need to create the header */
1906         int i_size = 0;
1907         char *p;
1908         const char *psz_status = httpd_ReasonFromCode( cl->answer.i_status );
1909
1910         i_size = strlen( "HTTP/1.") + 10 + 10 + strlen( psz_status ) + 5;
1911         for( i = 0; i < cl->answer.i_name; i++ )
1912         {
1913             i_size += strlen( cl->answer.name[i] ) + 2 +
1914                       strlen( cl->answer.value[i] ) + 2;
1915         }
1916
1917         if( cl->i_buffer_size < i_size )
1918         {
1919             cl->i_buffer_size = i_size;
1920             free( cl->p_buffer );
1921             cl->p_buffer = malloc( i_size );
1922         }
1923         p = (char *)cl->p_buffer;
1924
1925         p += sprintf( p, "%s.%u %d %s\r\n",
1926                       cl->answer.i_proto ==  HTTPD_PROTO_HTTP ? "HTTP/1" : "RTSP/1",
1927                       cl->answer.i_version,
1928                       cl->answer.i_status, psz_status );
1929         for( i = 0; i < cl->answer.i_name; i++ )
1930         {
1931             p += sprintf( p, "%s: %s\r\n", cl->answer.name[i],
1932                           cl->answer.value[i] );
1933         }
1934         p += sprintf( p, "\r\n" );
1935
1936         cl->i_buffer = 0;
1937         cl->i_buffer_size = (uint8_t*)p - cl->p_buffer;
1938
1939         /*fprintf( stderr, "sending answer\n" );
1940         fprintf( stderr, "%s",  cl->p_buffer );*/
1941     }
1942
1943     i_len = httpd_NetSend( cl, &cl->p_buffer[cl->i_buffer],
1944                            cl->i_buffer_size - cl->i_buffer );
1945     if( i_len >= 0 )
1946     {
1947         cl->i_buffer += i_len;
1948
1949         if( cl->i_buffer >= cl->i_buffer_size )
1950         {
1951             if( cl->answer.i_body == 0  && cl->answer.i_body_offset > 0 &&
1952                 !cl->b_read_waiting )
1953             {
1954                 /* catch more body data */
1955                 int     i_msg = cl->query.i_type;
1956                 int64_t i_offset = cl->answer.i_body_offset;
1957
1958                 httpd_MsgClean( &cl->answer );
1959                 cl->answer.i_body_offset = i_offset;
1960
1961                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
1962                                           &cl->answer, &cl->query );
1963             }
1964
1965             if( cl->answer.i_body > 0 )
1966             {
1967                 /* send the body data */
1968                 free( cl->p_buffer );
1969                 cl->p_buffer = cl->answer.p_body;
1970                 cl->i_buffer_size = cl->answer.i_body;
1971                 cl->i_buffer = 0;
1972
1973                 cl->answer.i_body = 0;
1974                 cl->answer.p_body = NULL;
1975             }
1976             else
1977             {
1978                 /* send finished */
1979                 cl->i_state = HTTPD_CLIENT_SEND_DONE;
1980             }
1981         }
1982     }
1983     else
1984     {
1985 #if defined( WIN32 ) || defined( UNDER_CE )
1986         if( ( i_len < 0 && WSAGetLastError() != WSAEWOULDBLOCK ) || ( i_len == 0 ) )
1987 #else
1988         if( ( i_len < 0 && errno != EAGAIN ) || ( i_len == 0 ) )
1989 #endif
1990         {
1991             /* error */
1992             cl->i_state = HTTPD_CLIENT_DEAD;
1993         }
1994     }
1995 }
1996
1997 static void httpd_ClientTlsHsIn( httpd_client_t *cl )
1998 {
1999     switch( tls_SessionContinueHandshake( cl->p_tls ) )
2000     {
2001         case 0:
2002             cl->i_state = HTTPD_CLIENT_RECEIVING;
2003             break;
2004
2005         case -1:
2006             cl->i_state = HTTPD_CLIENT_DEAD;
2007             cl->p_tls = NULL;
2008             break;
2009
2010         case 2:
2011             cl->i_state = HTTPD_CLIENT_TLS_HS_OUT;
2012     }
2013 }
2014
2015 static void httpd_ClientTlsHsOut( httpd_client_t *cl )
2016 {
2017     switch( tls_SessionContinueHandshake( cl->p_tls ) )
2018     {
2019         case 0:
2020             cl->i_state = HTTPD_CLIENT_RECEIVING;
2021             break;
2022
2023         case -1:
2024             cl->i_state = HTTPD_CLIENT_DEAD;
2025             cl->p_tls = NULL;
2026             break;
2027
2028         case 1:
2029             cl->i_state = HTTPD_CLIENT_TLS_HS_IN;
2030             break;
2031     }
2032 }
2033
2034 static void* httpd_HostThread( void *data )
2035 {
2036     httpd_host_t *host = data;
2037     tls_session_t *p_tls = NULL;
2038     counter_t *p_total_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2039     counter_t *p_active_counter = stats_CounterCreate( host, VLC_VAR_INTEGER, STATS_COUNTER );
2040     int evfd = vlc_object_waitpipe( VLC_OBJECT( host ) );
2041
2042     for( ;; )
2043     {
2044         /* prepare a new TLS session */
2045         if( ( p_tls == NULL ) && ( host->p_tls != NULL ) )
2046             p_tls = tls_ServerSessionPrepare( host->p_tls );
2047
2048         struct pollfd ufd[host->nfd + host->i_client + 1];
2049         unsigned nfd;
2050         for( nfd = 0; nfd < host->nfd; nfd++ )
2051         {
2052             ufd[nfd].fd = host->fds[nfd];
2053             ufd[nfd].events = POLLIN;
2054             ufd[nfd].revents = 0;
2055         }
2056
2057         /* add all socket that should be read/write and close dead connection */
2058         vlc_mutex_lock( &host->lock );
2059         while( host->i_url <= 0 && host->i_ref > 0 )
2060             vlc_cond_wait( &host->wait, &host->lock );
2061
2062         mtime_t now = mdate();
2063         bool b_low_delay = false;
2064
2065         for(int i_client = 0; i_client < host->i_client; i_client++ )
2066         {
2067             httpd_client_t *cl = host->client[i_client];
2068             if( cl->i_ref < 0 || ( cl->i_ref == 0 &&
2069                 ( cl->i_state == HTTPD_CLIENT_DEAD ||
2070                   ( cl->i_activity_timeout > 0 &&
2071                     cl->i_activity_date+cl->i_activity_timeout < now) ) ) )
2072             {
2073                 httpd_ClientClean( cl );
2074                 stats_UpdateInteger( host, p_active_counter, -1, NULL );
2075                 TAB_REMOVE( host->i_client, host->client, cl );
2076                 free( cl );
2077                 i_client--;
2078                 continue;
2079             }
2080
2081             struct pollfd *pufd = ufd + nfd;
2082             assert (pufd < ufd + (sizeof (ufd) / sizeof (ufd[0])));
2083
2084             pufd->fd = cl->fd;
2085             pufd->events = pufd->revents = 0;
2086
2087             if( ( cl->i_state == HTTPD_CLIENT_RECEIVING )
2088                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_IN ) )
2089             {
2090                 pufd->events = POLLIN;
2091             }
2092             else if( ( cl->i_state == HTTPD_CLIENT_SENDING )
2093                   || ( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT ) )
2094             {
2095                 pufd->events = POLLOUT;
2096             }
2097             else if( cl->i_state == HTTPD_CLIENT_RECEIVE_DONE )
2098             {
2099                 httpd_message_t *answer = &cl->answer;
2100                 httpd_message_t *query  = &cl->query;
2101                 int i_msg = query->i_type;
2102
2103                 httpd_MsgInit( answer );
2104
2105                 /* Handle what we received */
2106                 if( (cl->i_mode != HTTPD_CLIENT_BIDIR) &&
2107                     (i_msg == HTTPD_MSG_ANSWER || i_msg == HTTPD_MSG_CHANNEL) )
2108                 {
2109                     /* we can only receive request from client when not
2110                      * in BIDIR mode */
2111                     cl->url     = NULL;
2112                     cl->i_state = HTTPD_CLIENT_DEAD;
2113                 }
2114                 else if( i_msg == HTTPD_MSG_ANSWER )
2115                 {
2116                     /* We are in BIDIR mode, trigger the callback and then
2117                      * check for new data */
2118                     if( cl->url && cl->url->catch[i_msg].cb )
2119                     {
2120                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2121                                                   cl, NULL, query );
2122                     }
2123                     cl->i_state = HTTPD_CLIENT_WAITING;
2124                 }
2125                 else if( i_msg == HTTPD_MSG_CHANNEL )
2126                 {
2127                     /* We are in BIDIR mode, trigger the callback and then
2128                      * check for new data */
2129                     if( cl->url && cl->url->catch[i_msg].cb )
2130                     {
2131                         cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys,
2132                                                   cl, NULL, query );
2133                     }
2134                     cl->i_state = HTTPD_CLIENT_WAITING;
2135                 }
2136                 else if( i_msg == HTTPD_MSG_OPTIONS )
2137                 {
2138
2139                     answer->i_type   = HTTPD_MSG_ANSWER;
2140                     answer->i_proto  = query->i_proto;
2141                     answer->i_status = 200;
2142                     answer->i_body = 0;
2143                     answer->p_body = NULL;
2144
2145                     httpd_MsgAdd( answer, "Server", "%s", PACKAGE_STRING );
2146                     httpd_MsgAdd( answer, "Content-Length", "0" );
2147
2148                     switch( query->i_proto )
2149                     {
2150                         case HTTPD_PROTO_HTTP:
2151                             answer->i_version = 1;
2152                             httpd_MsgAdd( answer, "Allow",
2153                                           "GET,HEAD,POST,OPTIONS" );
2154                             break;
2155
2156                         case HTTPD_PROTO_RTSP:
2157                         {
2158                             const char *p;
2159                             answer->i_version = 0;
2160
2161                             p = httpd_MsgGet( query, "Cseq" );
2162                             if( p != NULL )
2163                                 httpd_MsgAdd( answer, "Cseq", "%s", p );
2164                             p = httpd_MsgGet( query, "Timestamp" );
2165                             if( p != NULL )
2166                                 httpd_MsgAdd( answer, "Timestamp", "%s", p );
2167
2168                             p = httpd_MsgGet( query, "Require" );
2169                             if( p != NULL )
2170                             {
2171                                 answer->i_status = 551;
2172                                 httpd_MsgAdd( query, "Unsupported", "%s", p );
2173                             }
2174
2175                             httpd_MsgAdd( answer, "Public", "DESCRIBE,SETUP,"
2176                                           "TEARDOWN,PLAY,PAUSE,GET_PARAMETER" );
2177                             break;
2178                         }
2179                     }
2180
2181                     cl->i_buffer = -1;  /* Force the creation of the answer in
2182                                          * httpd_ClientSend */
2183                     cl->i_state = HTTPD_CLIENT_SENDING;
2184                 }
2185                 else if( i_msg == HTTPD_MSG_NONE )
2186                 {
2187                     if( query->i_proto == HTTPD_PROTO_NONE )
2188                     {
2189                         cl->url = NULL;
2190                         cl->i_state = HTTPD_CLIENT_DEAD;
2191                     }
2192                     else
2193                     {
2194                         char *p;
2195
2196                         /* unimplemented */
2197                         answer->i_proto  = query->i_proto ;
2198                         answer->i_type   = HTTPD_MSG_ANSWER;
2199                         answer->i_version= 0;
2200                         answer->i_status = 501;
2201
2202                         answer->i_body = httpd_HtmlError (&p, 501, NULL);
2203                         answer->p_body = (uint8_t *)p;
2204                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2205
2206                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2207                         cl->i_state = HTTPD_CLIENT_SENDING;
2208                     }
2209                 }
2210                 else
2211                 {
2212                     bool b_auth_failed = false;
2213                     bool b_hosts_failed = false;
2214
2215                     /* Search the url and trigger callbacks */
2216                     for(int i = 0; i < host->i_url; i++ )
2217                     {
2218                         httpd_url_t *url = host->url[i];
2219
2220                         if( !strcmp( url->psz_url, query->psz_url ) )
2221                         {
2222                             if( url->catch[i_msg].cb )
2223                             {
2224                                 if( answer && ( url->p_acl != NULL ) )
2225                                 {
2226                                     char ip[NI_MAXNUMERICHOST];
2227
2228                                     if( ( httpd_ClientIP( cl, ip ) == NULL )
2229                                      || ACL_Check( url->p_acl, ip ) )
2230                                     {
2231                                         b_hosts_failed = true;
2232                                         break;
2233                                     }
2234                                 }
2235
2236                                 if( answer && ( *url->psz_user || *url->psz_password ) )
2237                                 {
2238                                     /* create the headers */
2239                                     const char *b64 = httpd_MsgGet( query, "Authorization" ); /* BASIC id */
2240                                     char *user = NULL, *pass = NULL;
2241
2242                                     if( b64 != NULL
2243                                      && !strncasecmp( b64, "BASIC", 5 ) )
2244                                     {
2245                                         b64 += 5;
2246                                         while( *b64 == ' ' )
2247                                             b64++;
2248
2249                                         user = vlc_b64_decode( b64 );
2250                                         if (user != NULL)
2251                                         {
2252                                             pass = strchr (user, ':');
2253                                             if (pass != NULL)
2254                                                 *pass++ = '\0';
2255                                         }
2256                                     }
2257
2258                                     if ((user == NULL) || (pass == NULL)
2259                                      || strcmp (user, url->psz_user)
2260                                      || strcmp (pass, url->psz_password))
2261                                     {
2262                                         httpd_MsgAdd( answer,
2263                                                       "WWW-Authenticate",
2264                                                       "Basic realm=\"%s\"",
2265                                                       url->psz_user );
2266                                         /* We fail for all url */
2267                                         b_auth_failed = true;
2268                                         free( user );
2269                                         break;
2270                                     }
2271
2272                                     free( user );
2273                                 }
2274
2275                                 if( !url->catch[i_msg].cb( url->catch[i_msg].p_sys, cl, answer, query ) )
2276                                 {
2277                                     if( answer->i_proto == HTTPD_PROTO_NONE )
2278                                     {
2279                                         /* Raw answer from a CGI */
2280                                         cl->i_buffer = cl->i_buffer_size;
2281                                     }
2282                                     else
2283                                         cl->i_buffer = -1;
2284
2285                                     /* only one url can answer */
2286                                     answer = NULL;
2287                                     if( cl->url == NULL )
2288                                     {
2289                                         cl->url = url;
2290                                     }
2291                                 }
2292                             }
2293                         }
2294                     }
2295
2296                     if( answer )
2297                     {
2298                         char *p;
2299
2300                         answer->i_proto  = query->i_proto;
2301                         answer->i_type   = HTTPD_MSG_ANSWER;
2302                         answer->i_version= 0;
2303
2304                         if( b_hosts_failed )
2305                         {
2306                             answer->i_status = 403;
2307                         }
2308                         else if( b_auth_failed )
2309                         {
2310                             answer->i_status = 401;
2311                         }
2312                         else
2313                         {
2314                             /* no url registered */
2315                             answer->i_status = 404;
2316                         }
2317
2318                         answer->i_body = httpd_HtmlError (&p,
2319                                                           answer->i_status,
2320                                                           query->psz_url);
2321                         answer->p_body = (uint8_t *)p;
2322
2323                         cl->i_buffer = -1;  /* Force the creation of the answer in httpd_ClientSend */
2324                         httpd_MsgAdd( answer, "Content-Length", "%d", answer->i_body );
2325                         httpd_MsgAdd( answer, "Content-Type", "%s", "text/html" );
2326                     }
2327
2328                     cl->i_state = HTTPD_CLIENT_SENDING;
2329                 }
2330             }
2331             else if( cl->i_state == HTTPD_CLIENT_SEND_DONE )
2332             {
2333                 if( cl->i_mode == HTTPD_CLIENT_FILE || cl->answer.i_body_offset == 0 )
2334                 {
2335                     const char *psz_connection = httpd_MsgGet( &cl->answer, "Connection" );
2336                     const char *psz_query = httpd_MsgGet( &cl->query, "Connection" );
2337                     bool b_connection = false;
2338                     bool b_keepalive = false;
2339                     bool b_query = false;
2340
2341                     cl->url = NULL;
2342                     if( psz_connection )
2343                     {
2344                         b_connection = ( strcasecmp( psz_connection, "Close" ) == 0 );
2345                         b_keepalive = ( strcasecmp( psz_connection, "Keep-Alive" ) == 0 );
2346                     }
2347
2348                     if( psz_query )
2349                     {
2350                         b_query = ( strcasecmp( psz_query, "Close" ) == 0 );
2351                     }
2352
2353                     if( ( ( cl->query.i_proto == HTTPD_PROTO_HTTP ) &&
2354                           ( ( cl->query.i_version == 0 && b_keepalive ) ||
2355                             ( cl->query.i_version == 1 && !b_connection ) ) ) ||
2356                         ( ( cl->query.i_proto == HTTPD_PROTO_RTSP ) &&
2357                           !b_query && !b_connection ) )
2358                     {
2359                         httpd_MsgClean( &cl->query );
2360                         httpd_MsgInit( &cl->query );
2361
2362                         cl->i_buffer = 0;
2363                         cl->i_buffer_size = 1000;
2364                         free( cl->p_buffer );
2365                         cl->p_buffer = malloc( cl->i_buffer_size );
2366                         cl->i_state = HTTPD_CLIENT_RECEIVING;
2367                     }
2368                     else
2369                     {
2370                         cl->i_state = HTTPD_CLIENT_DEAD;
2371                     }
2372                     httpd_MsgClean( &cl->answer );
2373                 }
2374                 else if( cl->b_read_waiting )
2375                 {
2376                     /* we have a message waiting for us to read it */
2377                     httpd_MsgClean( &cl->answer );
2378                     httpd_MsgClean( &cl->query );
2379
2380                     cl->i_buffer = 0;
2381                     cl->i_buffer_size = 1000;
2382                     free( cl->p_buffer );
2383                     cl->p_buffer = malloc( cl->i_buffer_size );
2384                     cl->i_state = HTTPD_CLIENT_RECEIVING;
2385                     cl->b_read_waiting = false;
2386                 }
2387                 else
2388                 {
2389                     int64_t i_offset = cl->answer.i_body_offset;
2390                     httpd_MsgClean( &cl->answer );
2391
2392                     cl->answer.i_body_offset = i_offset;
2393                     free( cl->p_buffer );
2394                     cl->p_buffer = NULL;
2395                     cl->i_buffer = 0;
2396                     cl->i_buffer_size = 0;
2397
2398                     cl->i_state = HTTPD_CLIENT_WAITING;
2399                 }
2400             }
2401             else if( cl->i_state == HTTPD_CLIENT_WAITING )
2402             {
2403                 int64_t i_offset = cl->answer.i_body_offset;
2404                 int     i_msg = cl->query.i_type;
2405
2406                 httpd_MsgInit( &cl->answer );
2407                 cl->answer.i_body_offset = i_offset;
2408
2409                 cl->url->catch[i_msg].cb( cl->url->catch[i_msg].p_sys, cl,
2410                                           &cl->answer, &cl->query );
2411                 if( cl->answer.i_type != HTTPD_MSG_NONE )
2412                 {
2413                     /* we have new data, so re-enter send mode */
2414                     cl->i_buffer      = 0;
2415                     cl->p_buffer      = cl->answer.p_body;
2416                     cl->i_buffer_size = cl->answer.i_body;
2417                     cl->answer.p_body = NULL;
2418                     cl->answer.i_body = 0;
2419                     cl->i_state = HTTPD_CLIENT_SENDING;
2420                 }
2421             }
2422
2423             /* Special for BIDIR mode we also check reading */
2424             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2425                 cl->i_state == HTTPD_CLIENT_SENDING )
2426             {
2427                 pufd->events |= POLLIN;
2428             }
2429
2430             if (pufd->events != 0)
2431                 nfd++;
2432             else
2433                 b_low_delay = true;
2434         }
2435         vlc_mutex_unlock( &host->lock );
2436
2437         ufd[nfd].fd = evfd;
2438         ufd[nfd].events = POLLIN;
2439         ufd[nfd].revents = 0;
2440         nfd++;
2441
2442         /* we will wait 20ms (not too big) if HTTPD_CLIENT_WAITING */
2443         switch( poll( ufd, nfd, b_low_delay ? 20 : -1) )
2444         {
2445             case -1:
2446                 if (errno != EINTR)
2447                 {
2448                     /* Kernel on low memory or a bug: pace */
2449                     msg_Err( host, "polling error: %m" );
2450                     msleep( 100000 );
2451                 }
2452             case 0:
2453                 continue;
2454         }
2455
2456         if( ufd[nfd - 1].revents )
2457             break;
2458
2459         /* Handle client sockets */
2460         vlc_mutex_lock( &host->lock );
2461         now = mdate();
2462         nfd = host->nfd;
2463         for( int i_client = 0; i_client < host->i_client; i_client++ )
2464         {
2465             httpd_client_t *cl = host->client[i_client];
2466             const struct pollfd *pufd = &ufd[nfd];
2467
2468             assert( pufd < &ufd[sizeof(ufd) / sizeof(ufd[0])] );
2469
2470             if( cl->fd != pufd->fd )
2471                 continue; // we were not waiting for this client
2472             ++nfd;
2473             if( pufd->revents == 0 )
2474                 continue; // no event received
2475
2476             cl->i_activity_date = now;
2477
2478             if( cl->i_state == HTTPD_CLIENT_RECEIVING )
2479             {
2480                 httpd_ClientRecv( cl );
2481             }
2482             else if( cl->i_state == HTTPD_CLIENT_SENDING )
2483             {
2484                 httpd_ClientSend( cl );
2485             }
2486             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_IN )
2487             {
2488                 httpd_ClientTlsHsIn( cl );
2489             }
2490             else if( cl->i_state == HTTPD_CLIENT_TLS_HS_OUT )
2491             {
2492                 httpd_ClientTlsHsOut( cl );
2493             }
2494
2495             if( cl->i_mode == HTTPD_CLIENT_BIDIR &&
2496                 cl->i_state == HTTPD_CLIENT_SENDING &&
2497                 (pufd->revents & POLLIN) )
2498             {
2499                 cl->b_read_waiting = true;
2500             }
2501         }
2502         vlc_mutex_unlock( &host->lock );
2503
2504         /* Handle server sockets (accept new connections) */
2505         for( nfd = 0; nfd < host->nfd; nfd++ )
2506         {
2507             httpd_client_t *cl;
2508             int i_state = -1;
2509             int fd = ufd[nfd].fd;
2510
2511             assert (fd == host->fds[nfd]);
2512
2513             if( ufd[nfd].revents == 0 )
2514                 continue;
2515
2516             /* */
2517             fd = accept (fd, NULL, NULL);
2518             if (fd == -1)
2519                 continue;
2520
2521             net_SetupSocket (fd);
2522             if( p_tls != NULL )
2523             {
2524                 switch( tls_ServerSessionHandshake( p_tls, fd ) )
2525                 {
2526                     case -1:
2527                         msg_Err( host, "Rejecting TLS connection" );
2528                         net_Close( fd );
2529                         fd = -1;
2530                         p_tls = NULL;
2531                         break;
2532
2533                     case 1: /* missing input - most likely */
2534                         i_state = HTTPD_CLIENT_TLS_HS_IN;
2535                         break;
2536
2537                     case 2: /* missing output */
2538                         i_state = HTTPD_CLIENT_TLS_HS_OUT;
2539                         break;
2540                 }
2541
2542                 if( (p_tls == NULL) != (host->p_tls == NULL) )
2543                     break; // wasted TLS session, cannot accept() anymore
2544             }
2545
2546             stats_UpdateInteger( host, p_total_counter, 1, NULL );
2547             stats_UpdateInteger( host, p_active_counter, 1, NULL );
2548             cl = httpd_ClientNew( fd, p_tls, now );
2549             p_tls = NULL;
2550             vlc_mutex_lock( &host->lock );
2551             TAB_APPEND( host->i_client, host->client, cl );
2552             vlc_mutex_unlock( &host->lock );
2553             if( i_state != -1 )
2554                 cl->i_state = i_state; // override state for TLS
2555
2556             if (host->p_tls != NULL)
2557                 break; // cannot accept further without new TLS session
2558         }
2559
2560     }
2561
2562     if( p_tls != NULL )
2563         tls_ServerSessionClose( p_tls );
2564     if( p_total_counter )
2565         stats_CounterClean( p_total_counter );
2566     if( p_active_counter )
2567         stats_CounterClean( p_active_counter );
2568     return NULL;
2569 }