http.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * http.c
- *****************************************************************************
- * Copyright (C) 2001-2003 VideoLAN
- * $Id: http.c 9280 2004-11-11 12:31:27Z zorglub $
- *
- * Authors: Laurent Aimar <fenrir@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h>
- #include <vlc/vlc.h>
- #include <vlc/sout.h>
- #include "vlc_httpd.h"
- #include "vlc_tls.h"
- #define FREE( p ) if( p ) { free( p); (p) = NULL; }
- #define DEFAULT_PORT 8080
- #define DEFAULT_SSL_PORT 8443
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- #define SOUT_CFG_PREFIX "sout-http-"
- #define USER_TEXT N_("Username")
- #define USER_LONGTEXT N_("Allows you to give a user name that will be "
- "requested to access the stream." )
- #define PASS_TEXT N_("Password")
- #define PASS_LONGTEXT N_("Allows you to give a password that will be "
- "requested to access the stream." )
- #define MIME_TEXT N_("Mime")
- #define MIME_LONGTEXT N_("Allows you to give the mime returned by the server." )
- #define CERT_TEXT N_( "Certificate file" )
- #define CERT_LONGTEXT N_( "Path to the x509 PEM certificate file that will "
- "be used by the HTTP/SSL stream output" )
- #define KEY_TEXT N_( "Private key file" )
- #define KEY_LONGTEXT N_( "Path to the x509 PEM private key file that will "
- " be used by the HTTP/SSL stream output. Leave "
- "empty if you don't have one." )
- #define CA_TEXT N_( "Root CA file" )
- #define CA_LONGTEXT N_( "Path to the x509 PEM trusted root CA certificates "
- "(certificate authority) file that will be used by "
- "the HTTP/SSL stream output. Leave empty if you "
- "don't have one." )
- #define CRL_TEXT N_( "CRL file" )
- #define CRL_LONGTEXT N_( "Path to the x509 PEM Certificates Revocation List "
- "file that will be HTTP/SSL stream output. Leave "
- "empty if you don't have one." )
- vlc_module_begin();
- set_description( _("HTTP stream output") );
- set_capability( "sout access", 0 );
- add_shortcut( "http" );
- add_shortcut( "https" );
- add_shortcut( "mmsh" );
- add_string( SOUT_CFG_PREFIX "user", "", NULL,
- USER_TEXT, USER_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "pwd", "", NULL,
- PASS_TEXT, PASS_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "mime", "", NULL,
- MIME_TEXT, MIME_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "cert", "vlc.pem", NULL,
- CERT_TEXT, CERT_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "key", NULL, NULL,
- KEY_TEXT, KEY_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "ca", NULL, NULL,
- CA_TEXT, CA_LONGTEXT, VLC_TRUE );
- add_string( SOUT_CFG_PREFIX "crl", NULL, NULL,
- CRL_TEXT, CRL_LONGTEXT, VLC_TRUE );
- set_callbacks( Open, Close );
- vlc_module_end();
- /*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
- static const char *ppsz_sout_options[] = {
- "user", "pwd", "mime", NULL
- };
- static int Write( sout_access_out_t *, block_t * );
- static int Seek ( sout_access_out_t *, off_t );
- struct sout_access_out_sys_t
- {
- /* host */
- httpd_host_t *p_httpd_host;
- /* stream */
- httpd_stream_t *p_httpd_stream;
- /* gather header from stream */
- int i_header_allocated;
- int i_header_size;
- uint8_t *p_header;
- vlc_bool_t b_header_complete;
- };
- /*****************************************************************************
- * Open: open the file
- *****************************************************************************/
- static int Open( vlc_object_t *p_this )
- {
- sout_access_out_t *p_access = (sout_access_out_t*)p_this;
- sout_access_out_sys_t *p_sys;
- tls_server_t *p_tls;
- char *psz_parser, *psz_name;
- char *psz_bind_addr;
- int i_bind_port;
- char *psz_file_name;
- char *psz_user = NULL;
- char *psz_pwd = NULL;
- char *psz_mime = NULL;
- vlc_value_t val;
- if( !( p_sys = p_access->p_sys =
- malloc( sizeof( sout_access_out_sys_t ) ) ) )
- {
- msg_Err( p_access, "Not enough memory" );
- return VLC_ENOMEM ;
- }
- sout_CfgParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
- /* p_access->psz_name host.name:port/filename */
- psz_name = psz_parser = strdup( p_access->psz_name );
- psz_bind_addr = psz_parser;
- i_bind_port = 0;
- psz_file_name = "";
- while( *psz_parser && *psz_parser != ':' && *psz_parser != '/' )
- {
- psz_parser++;
- }
- if( *psz_parser == ':' )
- {
- *psz_parser = ' ';
- psz_parser++;
- i_bind_port = atoi( psz_parser );
- while( *psz_parser && *psz_parser != '/' )
- {
- psz_parser++;
- }
- }
- if( *psz_parser == '/' )
- {
- *psz_parser = ' ';
- psz_parser++;
- psz_file_name = psz_parser;
- }
- if( !*psz_file_name )
- {
- psz_file_name = strdup( "/" );
- }
- else if( *psz_file_name != '/' )
- {
- char *p = psz_file_name;
- psz_file_name = malloc( strlen( p ) + 2 );
- strcpy( psz_file_name, "/" );
- strcat( psz_file_name, p );
- }
- else
- {
- psz_file_name = strdup( psz_file_name );
- }
- /* SSL support */
- if( p_access->psz_access && !strcmp( p_access->psz_access, "https" ) )
- {
- const char *psz_cert, *psz_key;
- psz_cert = config_GetPsz( p_this, SOUT_CFG_PREFIX"cert" );
- psz_key = config_GetPsz( p_this, SOUT_CFG_PREFIX"key" );
- p_tls = tls_ServerCreate( p_this, psz_cert, psz_key );
- if ( p_tls == NULL )
- {
- msg_Err( p_this, "TLS initialization error" );
- free( psz_file_name );
- free( psz_name );
- free( p_sys );
- return VLC_EGENERIC;
- }
- psz_cert = config_GetPsz( p_this, SOUT_CFG_PREFIX"ca" );
- if ( ( psz_cert != NULL) && tls_ServerAddCA( p_tls, psz_cert ) )
- {
- msg_Err( p_this, "TLS CA error" );
- tls_ServerDelete( p_tls );
- free( psz_file_name );
- free( psz_name );
- free( p_sys );
- return VLC_EGENERIC;
- }
- psz_cert = config_GetPsz( p_this, SOUT_CFG_PREFIX"crl" );
- if ( ( psz_cert != NULL) && tls_ServerAddCRL( p_tls, psz_cert ) )
- {
- msg_Err( p_this, "TLS CRL error" );
- tls_ServerDelete( p_tls );
- free( psz_file_name );
- free( psz_name );
- free( p_sys );
- return VLC_EGENERIC;
- }
- if( i_bind_port <= 0 )
- i_bind_port = DEFAULT_SSL_PORT;
- }
- else
- {
- p_tls = NULL;
- if( i_bind_port <= 0 )
- i_bind_port = DEFAULT_PORT;
- }
- p_sys->p_httpd_host = httpd_TLSHostNew( VLC_OBJECT(p_access),
- psz_bind_addr, i_bind_port,
- p_tls );
- if( p_sys->p_httpd_host == NULL )
- {
- msg_Err( p_access, "cannot listen on %s:%d",
- psz_bind_addr, i_bind_port );
- if( p_tls != NULL )
- tls_ServerDelete( p_tls );
- free( psz_name );
- free( psz_file_name );
- free( p_sys );
- return VLC_EGENERIC;
- }
- if( p_access->psz_access && !strcmp( p_access->psz_access, "mmsh" ) )
- {
- psz_mime = strdup( "video/x-ms-asf-stream" );
- }
- else
- {
- var_Get( p_access, SOUT_CFG_PREFIX "mime", &val );
- if( *val.psz_string )
- psz_mime = val.psz_string;
- else
- free( val.psz_string );
- }
- var_Get( p_access, SOUT_CFG_PREFIX "user", &val );
- if( *val.psz_string )
- psz_user = val.psz_string;
- else
- free( val.psz_string );
- var_Get( p_access, SOUT_CFG_PREFIX "pwd", &val );
- if( *val.psz_string )
- psz_pwd = val.psz_string;
- else
- free( val.psz_string );
- p_sys->p_httpd_stream =
- httpd_StreamNew( p_sys->p_httpd_host, psz_file_name, psz_mime,
- psz_user, psz_pwd );
- if( psz_user ) free( psz_user );
- if( psz_pwd ) free( psz_pwd );
- if( psz_mime ) free( psz_mime );
- if( p_sys->p_httpd_stream == NULL )
- {
- msg_Err( p_access, "cannot add stream %s", psz_file_name );
- httpd_HostDelete( p_sys->p_httpd_host );
- free( psz_name );
- free( psz_file_name );
- free( p_sys );
- return VLC_EGENERIC;
- }
- free( psz_file_name );
- free( psz_name );
- p_sys->i_header_allocated = 1024;
- p_sys->i_header_size = 0;
- p_sys->p_header = malloc( p_sys->i_header_allocated );
- p_sys->b_header_complete = VLC_FALSE;
- p_access->pf_write = Write;
- p_access->pf_seek = Seek;
- /* update p_sout->i_out_pace_nocontrol */
- p_access->p_sout->i_out_pace_nocontrol++;
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Close: close the target
- *****************************************************************************/
- static void Close( vlc_object_t * p_this )
- {
- sout_access_out_t *p_access = (sout_access_out_t*)p_this;
- sout_access_out_sys_t *p_sys = p_access->p_sys;
- /* update p_sout->i_out_pace_nocontrol */
- p_access->p_sout->i_out_pace_nocontrol--;
- httpd_StreamDelete( p_sys->p_httpd_stream );
- httpd_HostDelete( p_sys->p_httpd_host );
- FREE( p_sys->p_header );
- msg_Dbg( p_access, "Close" );
- free( p_sys );
- }
- /*****************************************************************************
- * Write:
- *****************************************************************************/
- static int Write( sout_access_out_t *p_access, block_t *p_buffer )
- {
- sout_access_out_sys_t *p_sys = p_access->p_sys;
- int i_err = 0;
- while( p_buffer )
- {
- block_t *p_next;
- if( p_buffer->i_flags & BLOCK_FLAG_HEADER )
- {
- /* gather header */
- if( p_sys->b_header_complete )
- {
- /* free previously gathered header */
- p_sys->i_header_size = 0;
- p_sys->b_header_complete = VLC_FALSE;
- }
- if( (int)(p_buffer->i_buffer + p_sys->i_header_size) >
- p_sys->i_header_allocated )
- {
- p_sys->i_header_allocated =
- p_buffer->i_buffer + p_sys->i_header_size + 1024;
- p_sys->p_header =
- realloc( p_sys->p_header, p_sys->i_header_allocated );
- }
- memcpy( &p_sys->p_header[p_sys->i_header_size],
- p_buffer->p_buffer,
- p_buffer->i_buffer );
- p_sys->i_header_size += p_buffer->i_buffer;
- }
- else if( !p_sys->b_header_complete )
- {
- p_sys->b_header_complete = VLC_TRUE;
- httpd_StreamHeader( p_sys->p_httpd_stream, p_sys->p_header,
- p_sys->i_header_size );
- }
- /* send data */
- i_err = httpd_StreamSend( p_sys->p_httpd_stream, p_buffer->p_buffer,
- p_buffer->i_buffer );
- p_next = p_buffer->p_next;
- block_Release( p_buffer );
- p_buffer = p_next;
- if( i_err < 0 )
- {
- break;
- }
- }
- if( i_err < 0 )
- {
- block_ChainRelease( p_buffer );
- }
- return( i_err < 0 ? VLC_EGENERIC : VLC_SUCCESS );
- }
- /*****************************************************************************
- * Seek: seek to a specific location in a file
- *****************************************************************************/
- static int Seek( sout_access_out_t *p_access, off_t i_pos )
- {
- msg_Warn( p_access, "HTTP sout access cannot seek" );
- return VLC_EGENERIC;
- }