modules/access_output/http.c

   1 /*****************************************************************************
   2  * http.c
   3  *****************************************************************************
   4  * Copyright (C) 2001-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Jon Lech Johansen <jon@nanocrew.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_sout.h>
  36 #include <vlc_block.h>
  37
  38
  39 #include <vlc_input.h>
  40 #include <vlc_playlist.h>
  41
  42 #if 0 //def HAVE_AVAHI_CLIENT
  43     #include "bonjour.h"
  44
  45     #if defined( WIN32 )
  46         #define DIRECTORY_SEPARATOR '\\'
  47     #else
  48         #define DIRECTORY_SEPARATOR '/'
  49     #endif
  50 #endif
  51
  52 #include <vlc_httpd.h>
  53
  54 #define DEFAULT_PORT        8080
  55 #define DEFAULT_SSL_PORT    8443
  56
  57 /*****************************************************************************
  58  * Module descriptor
  59  *****************************************************************************/
  60 static int  Open ( vlc_object_t * );
  61 static void Close( vlc_object_t * );
  62
  63 #define SOUT_CFG_PREFIX "sout-http-"
  64
  65 #define USER_TEXT N_("Username")
  66 #define USER_LONGTEXT N_("User name that will be " \
  67                          "requested to access the stream." )
  68 #define PASS_TEXT N_("Password")
  69 #define PASS_LONGTEXT N_("Password that will be " \
  70                          "requested to access the stream." )
  71 #define MIME_TEXT N_("Mime")
  72 #define MIME_LONGTEXT N_("MIME returned by the server (autodetected " \
  73                         "if not specified)." )
  74 #define CERT_TEXT N_( "Certificate file" )
  75 #define CERT_LONGTEXT N_( "Path to the x509 PEM certificate file that will "\
  76                           "be used for HTTPS." )
  77 #define KEY_TEXT N_( "Private key file" )
  78 #define KEY_LONGTEXT N_( "Path to the x509 PEM private key file that will " \
  79                          "be used for HTTPS. Leave " \
  80                          "empty if you don't have one." )
  81 #define CA_TEXT N_( "Root CA file" )
  82 #define CA_LONGTEXT N_( "Path to the x509 PEM trusted root CA certificates " \
  83                         "(certificate authority) file that will be used for " \
  84                         "HTTPS. Leave empty if you " \
  85                         "don't have one." )
  86 #define CRL_TEXT N_( "CRL file" )
  87 #define CRL_LONGTEXT N_( "Path to the x509 PEM Certificates Revocation List " \
  88                          "file that will be used for SSL. Leave " \
  89                          "empty if you don't have one." )
  90 #define BONJOUR_TEXT N_( "Advertise with Bonjour")
  91 #define BONJOUR_LONGTEXT N_( "Advertise the stream with the Bonjour protocol." )
  92
  93
  94 vlc_module_begin ()
  95     set_description( N_("HTTP stream output") )
  96     set_capability( "sout access", 0 )
  97     set_shortname( "HTTP" )
  98     add_shortcut( "http", "https", "mmsh" )
  99     set_category( CAT_SOUT )
 100     set_subcategory( SUBCAT_SOUT_ACO )
 101     add_string( SOUT_CFG_PREFIX "user", "",
 102                 USER_TEXT, USER_LONGTEXT, true )
 103     add_password( SOUT_CFG_PREFIX "pwd", "", NULL,
 104                   PASS_TEXT, PASS_LONGTEXT, true )
 105     add_string( SOUT_CFG_PREFIX "mime", "",
 106                 MIME_TEXT, MIME_LONGTEXT, true )
 107     add_string( SOUT_CFG_PREFIX "cert", "vlc.pem",
 108                 CERT_TEXT, CERT_LONGTEXT, true )
 109     add_string( SOUT_CFG_PREFIX "key", NULL,
 110                 KEY_TEXT, KEY_LONGTEXT, true )
 111     add_string( SOUT_CFG_PREFIX "ca", NULL,
 112                 CA_TEXT, CA_LONGTEXT, true )
 113     add_string( SOUT_CFG_PREFIX "crl", NULL,
 114                 CRL_TEXT, CRL_LONGTEXT, true )
 115 #if 0 //def HAVE_AVAHI_CLIENT
 116     add_bool( SOUT_CFG_PREFIX "bonjour", false, NULL,
 117               BONJOUR_TEXT, BONJOUR_LONGTEXT, true);
 118 #endif
 119     set_callbacks( Open, Close )
 120 vlc_module_end ()
 121
 122
 123 /*****************************************************************************
 124  * Exported prototypes
 125  *****************************************************************************/
 126 static const char *const ppsz_sout_options[] = {
 127     "user", "pwd", "mime", "cert", "key", "ca", "crl", NULL
 128 };
 129
 130 static ssize_t Write( sout_access_out_t *, block_t * );
 131 static int Seek ( sout_access_out_t *, off_t  );
 132 static int Control( sout_access_out_t *, int, va_list );
 133
 134 struct sout_access_out_sys_t
 135 {
 136     /* host */
 137     httpd_host_t        *p_httpd_host;
 138
 139     /* stream */
 140     httpd_stream_t      *p_httpd_stream;
 141
 142     /* gather header from stream */
 143     int                 i_header_allocated;
 144     int                 i_header_size;
 145     uint8_t             *p_header;
 146     bool          b_header_complete;
 147
 148 #if 0 //def HAVE_AVAHI_CLIENT
 149     void                *p_bonjour;
 150 #endif
 151 };
 152
 153 /*****************************************************************************
 154  * Open: open the file
 155  *****************************************************************************/
 156 static int Open( vlc_object_t *p_this )
 157 {
 158     sout_access_out_t       *p_access = (sout_access_out_t*)p_this;
 159     sout_access_out_sys_t   *p_sys;
 160
 161     char                *psz_parser;
 162
 163     char                *psz_bind_addr;
 164     int                 i_bind_port;
 165     char                *psz_file_name;
 166     char                *psz_user;
 167     char                *psz_pwd;
 168     char                *psz_mime;
 169     char                *psz_cert = NULL, *psz_key = NULL, *psz_ca = NULL,
 170                         *psz_crl = NULL;
 171
 172     if( !( p_sys = p_access->p_sys =
 173                 malloc( sizeof( sout_access_out_sys_t ) ) ) )
 174         return VLC_ENOMEM ;
 175
 176     config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
 177
 178     /* p_access->psz_path = "hostname:port/filename" */
 179     psz_bind_addr = strdup( p_access->psz_path );
 180
 181     i_bind_port = 0;
 182
 183     psz_parser = strchr( psz_bind_addr, '/' );
 184     if( psz_parser )
 185     {
 186         psz_file_name = strdup( psz_parser );
 187         *psz_parser = '\0';
 188     }
 189     else
 190         psz_file_name = strdup( "/" );
 191
 192     if( psz_bind_addr[0] == '[' )
 193     {
 194         psz_bind_addr++;
 195         psz_parser = strstr( psz_bind_addr, "]:" );
 196         if( psz_parser )
 197         {
 198             *psz_parser = '\0';
 199             i_bind_port = atoi( psz_parser + 2 );
 200         }
 201         psz_parser = psz_bind_addr - 1;
 202     }
 203     else
 204     {
 205         psz_parser = strrchr( psz_bind_addr, ':' );
 206         if( psz_parser )
 207         {
 208             *psz_parser = '\0';
 209             i_bind_port = atoi( psz_parser + 1 );
 210         }
 211         psz_parser = psz_bind_addr;
 212     }
 213
 214     /* SSL support */
 215     if( p_access->psz_access && !strcmp( p_access->psz_access, "https" ) )
 216     {
 217         psz_cert = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"cert" );
 218         psz_key = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"key" );
 219         psz_ca = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"ca" );
 220         psz_crl = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"crl" );
 221
 222         if( i_bind_port <= 0 )
 223             i_bind_port = DEFAULT_SSL_PORT;
 224     }
 225     else
 226     {
 227         if( i_bind_port <= 0 )
 228             i_bind_port = DEFAULT_PORT;
 229     }
 230
 231     p_sys->p_httpd_host = httpd_TLSHostNew( VLC_OBJECT(p_access),
 232                                             psz_bind_addr, i_bind_port,
 233                                             psz_cert, psz_key, psz_ca,
 234                                             psz_crl );
 235     free( psz_cert );
 236     free( psz_key );
 237     free( psz_ca );
 238     free( psz_crl );
 239
 240     if( p_sys->p_httpd_host == NULL )
 241     {
 242         msg_Err( p_access, "cannot listen on %s port %d",
 243                  psz_bind_addr, i_bind_port );
 244         free( psz_file_name );
 245         free( psz_parser );
 246         free( p_sys );
 247         return VLC_EGENERIC;
 248     }
 249     free( psz_parser );
 250
 251     psz_user = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "user" );
 252     psz_pwd = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "pwd" );
 253     if( p_access->psz_access && !strcmp( p_access->psz_access, "mmsh" ) )
 254     {
 255         psz_mime = strdup( "video/x-ms-asf-stream" );
 256     }
 257     else
 258     {
 259         psz_mime = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "mime" );
 260     }
 261
 262     p_sys->p_httpd_stream =
 263         httpd_StreamNew( p_sys->p_httpd_host, psz_file_name, psz_mime,
 264                          psz_user, psz_pwd, NULL );
 265     free( psz_user );
 266     free( psz_pwd );
 267     free( psz_mime );
 268
 269     if( p_sys->p_httpd_stream == NULL )
 270     {
 271         msg_Err( p_access, "cannot add stream %s", psz_file_name );
 272         httpd_HostDelete( p_sys->p_httpd_host );
 273
 274         free( psz_file_name );
 275         free( p_sys );
 276         return VLC_EGENERIC;
 277     }
 278
 279 #if 0 //def HAVE_AVAHI_CLIENT
 280     if( var_InheritBool(p_this, SOUT_CFG_PREFIX "bonjour") )
 281     {
 282         char                *psz_txt, *psz_name;
 283         playlist_t          *p_playlist = pl_Get( p_access );
 284
 285         char *psz_uri = input_item_GetURI( p_playlist->status.p_item->p_input );
 286         char *psz_newuri = psz_uri;
 287         psz_name = strrchr( psz_newuri, DIRECTORY_SEPARATOR );
 288         if( psz_name != NULL ) psz_name++;
 289         else psz_name = psz_newuri;
 290
 291         if( psz_file_name &&
 292             asprintf( &psz_txt, "path=%s", psz_file_name ) == -1 )
 293             {
 294                 free( psz_uri );
 295                 return VLC_ENOMEM;
 296             }
 297
 298         p_sys->p_bonjour = bonjour_start_service( (vlc_object_t *)p_access,
 299                                     strcmp( p_access->psz_access, "https" )
 300                                        ? "_vlc-http._tcp" : "_vlc-https._tcp",
 301                                              psz_name, i_bind_port, psz_txt );
 302         free( psz_uri );
 303         free( psz_txt );
 304
 305         if( p_sys->p_bonjour == NULL )
 306             msg_Err( p_access, "unable to start requested Bonjour announce" );
 307     }
 308     else
 309         p_sys->p_bonjour = NULL;
 310 #endif
 311
 312     free( psz_file_name );
 313
 314     p_sys->i_header_allocated = 1024;
 315     p_sys->i_header_size      = 0;
 316     p_sys->p_header           = xmalloc( p_sys->i_header_allocated );
 317     p_sys->b_header_complete  = false;
 318
 319     p_access->pf_write       = Write;
 320     p_access->pf_seek        = Seek;
 321     p_access->pf_control     = Control;
 322
 323     return VLC_SUCCESS;
 324 }
 325
 326 /*****************************************************************************
 327  * Close: close the target
 328  *****************************************************************************/
 329 static void Close( vlc_object_t * p_this )
 330 {
 331     sout_access_out_t       *p_access = (sout_access_out_t*)p_this;
 332     sout_access_out_sys_t   *p_sys = p_access->p_sys;
 333
 334 #if 0 //def HAVE_AVAHI_CLIENT
 335     if( p_sys->p_bonjour != NULL )
 336         bonjour_stop_service( p_sys->p_bonjour );
 337 #endif
 338
 339     httpd_StreamDelete( p_sys->p_httpd_stream );
 340     httpd_HostDelete( p_sys->p_httpd_host );
 341
 342     free( p_sys->p_header );
 343
 344     msg_Dbg( p_access, "Close" );
 345
 346     free( p_sys );
 347 }
 348
 349 static int Control( sout_access_out_t *p_access, int i_query, va_list args )
 350 {
 351     (void)p_access;
 352
 353     switch( i_query )
 354     {
 355         case ACCESS_OUT_CONTROLS_PACE:
 356             *va_arg( args, bool * ) = false;
 357             break;
 358
 359         default:
 360             return VLC_EGENERIC;
 361     }
 362     return VLC_SUCCESS;
 363 }
 364
 365 /*****************************************************************************
 366  * Write:
 367  *****************************************************************************/
 368 static ssize_t Write( sout_access_out_t *p_access, block_t *p_buffer )
 369 {
 370     sout_access_out_sys_t *p_sys = p_access->p_sys;
 371     int i_err = 0;
 372     int i_len = 0;
 373
 374     while( p_buffer )
 375     {
 376         block_t *p_next;
 377
 378         if( p_buffer->i_flags & BLOCK_FLAG_HEADER )
 379         {
 380             /* gather header */
 381             if( p_sys->b_header_complete )
 382             {
 383                 /* free previously gathered header */
 384                 p_sys->i_header_size = 0;
 385                 p_sys->b_header_complete = false;
 386             }
 387             if( (int)(p_buffer->i_buffer + p_sys->i_header_size) >
 388                 p_sys->i_header_allocated )
 389             {
 390                 p_sys->i_header_allocated =
 391                     p_buffer->i_buffer + p_sys->i_header_size + 1024;
 392                 p_sys->p_header = xrealloc( p_sys->p_header,
 393                                                   p_sys->i_header_allocated );
 394             }
 395             memcpy( &p_sys->p_header[p_sys->i_header_size],
 396                     p_buffer->p_buffer,
 397                     p_buffer->i_buffer );
 398             p_sys->i_header_size += p_buffer->i_buffer;
 399         }
 400         else if( !p_sys->b_header_complete )
 401         {
 402             p_sys->b_header_complete = true;
 403
 404             httpd_StreamHeader( p_sys->p_httpd_stream, p_sys->p_header,
 405                                 p_sys->i_header_size );
 406         }
 407
 408         i_len += p_buffer->i_buffer;
 409         /* send data */
 410         i_err = httpd_StreamSend( p_sys->p_httpd_stream, p_buffer->p_buffer,
 411                                   p_buffer->i_buffer );
 412
 413         p_next = p_buffer->p_next;
 414         block_Release( p_buffer );
 415         p_buffer = p_next;
 416
 417         if( i_err < 0 )
 418         {
 419             break;
 420         }
 421     }
 422
 423     if( i_err < 0 )
 424     {
 425         block_ChainRelease( p_buffer );
 426     }
 427
 428     return( i_err < 0 ? VLC_EGENERIC : i_len );
 429 }
 430
 431 /*****************************************************************************
 432  * Seek: seek to a specific location in a file
 433  *****************************************************************************/
 434 static int Seek( sout_access_out_t *p_access, off_t i_pos )
 435 {
 436     (void)i_pos;
 437     msg_Warn( p_access, "HTTP sout access cannot seek" );
 438     return VLC_EGENERIC;
 439 }