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vlc/modules/access_output/http.c

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/*****************************************************************************
* http.c
*****************************************************************************
* Copyright (C) 2001-2009 the VideoLAN team
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Jon Lech Johansen <jon@nanocrew.net>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_sout.h>
#include <vlc_block.h>
#include <vlc_input.h>
#include <vlc_playlist.h>
#if 0 //def HAVE_AVAHI_CLIENT
#include "bonjour.h"
#if defined( WIN32 )
#define DIRECTORY_SEPARATOR '\\'
#else
#define DIRECTORY_SEPARATOR '/'
#endif
#endif
#include <vlc_httpd.h>
#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_("User name that will be " \
"requested to access the stream." )
#define PASS_TEXT N_("Password")
#define PASS_LONGTEXT N_("Password that will be " \
"requested to access the stream." )
#define MIME_TEXT N_("Mime")
#define MIME_LONGTEXT N_("MIME returned by the server (autodetected " \
"if not specified)." )
#define CERT_TEXT N_( "Certificate file" )
#define CERT_LONGTEXT N_( "Path to the x509 PEM certificate file that will "\
"be used for HTTPS." )
#define KEY_TEXT N_( "Private key file" )
#define KEY_LONGTEXT N_( "Path to the x509 PEM private key file that will " \
"be used for HTTPS. 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 for " \
"HTTPS. 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 used for SSL. Leave " \
"empty if you don't have one." )
#define BONJOUR_TEXT N_( "Advertise with Bonjour")
#define BONJOUR_LONGTEXT N_( "Advertise the stream with the Bonjour protocol." )
vlc_module_begin ()
set_description( N_("HTTP stream output") )
set_capability( "sout access", 0 )
set_shortname( "HTTP" )
add_shortcut( "http" )
add_shortcut( "https" )
add_shortcut( "mmsh" )
set_category( CAT_SOUT )
set_subcategory( SUBCAT_SOUT_ACO )
add_string( SOUT_CFG_PREFIX "user", "", NULL,
USER_TEXT, USER_LONGTEXT, true )
add_password( SOUT_CFG_PREFIX "pwd", "", NULL,
PASS_TEXT, PASS_LONGTEXT, true )
add_string( SOUT_CFG_PREFIX "mime", "", NULL,
MIME_TEXT, MIME_LONGTEXT, true )
add_string( SOUT_CFG_PREFIX "cert", "vlc.pem", NULL,
CERT_TEXT, CERT_LONGTEXT, true )
add_string( SOUT_CFG_PREFIX "key", NULL, NULL,
KEY_TEXT, KEY_LONGTEXT, true )
add_string( SOUT_CFG_PREFIX "ca", NULL, NULL,
CA_TEXT, CA_LONGTEXT, true )
add_string( SOUT_CFG_PREFIX "crl", NULL, NULL,
CRL_TEXT, CRL_LONGTEXT, true )
#if 0 //def HAVE_AVAHI_CLIENT
add_bool( SOUT_CFG_PREFIX "bonjour", false, NULL,
BONJOUR_TEXT, BONJOUR_LONGTEXT, true);
#endif
set_callbacks( Open, Close )
vlc_module_end ()
/*****************************************************************************
* Exported prototypes
*****************************************************************************/
static const char *const ppsz_sout_options[] = {
"user", "pwd", "mime", "cert", "key", "ca", "crl", NULL
};
static ssize_t Write( sout_access_out_t *, block_t * );
static int Seek ( sout_access_out_t *, off_t );
static int Control( sout_access_out_t *, int, va_list );
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;
bool b_header_complete;
#if 0 //def HAVE_AVAHI_CLIENT
void *p_bonjour;
#endif
};
/*****************************************************************************
* 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;
char *psz_parser;
char *psz_bind_addr;
int i_bind_port;
char *psz_file_name;
char *psz_user;
char *psz_pwd;
char *psz_mime;
char *psz_cert = NULL, *psz_key = NULL, *psz_ca = NULL,
*psz_crl = NULL;
if( !( p_sys = p_access->p_sys =
malloc( sizeof( sout_access_out_sys_t ) ) ) )
return VLC_ENOMEM ;
config_ChainParse( p_access, SOUT_CFG_PREFIX, ppsz_sout_options, p_access->p_cfg );
/* p_access->psz_path = "hostname:port/filename" */
psz_bind_addr = strdup( p_access->psz_path );
i_bind_port = 0;
psz_parser = strchr( psz_bind_addr, '/' );
if( psz_parser )
{
psz_file_name = strdup( psz_parser );
*psz_parser = '\0';
}
else
psz_file_name = strdup( "/" );
if( psz_bind_addr[0] == '[' )
{
psz_bind_addr++;
psz_parser = strstr( psz_bind_addr, "]:" );
if( psz_parser )
{
*psz_parser = '\0';
i_bind_port = atoi( psz_parser + 2 );
}
psz_parser = psz_bind_addr - 1;
}
else
{
psz_parser = strrchr( psz_bind_addr, ':' );
if( psz_parser )
{
*psz_parser = '\0';
i_bind_port = atoi( psz_parser + 1 );
}
psz_parser = psz_bind_addr;
}
/* SSL support */
if( p_access->psz_access && !strcmp( p_access->psz_access, "https" ) )
{
psz_cert = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"cert" );
psz_key = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"key" );
psz_ca = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"ca" );
psz_crl = var_CreateGetNonEmptyString( p_this, SOUT_CFG_PREFIX"crl" );
if( i_bind_port <= 0 )
i_bind_port = DEFAULT_SSL_PORT;
}
else
{
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,
psz_cert, psz_key, psz_ca,
psz_crl );
free( psz_cert );
free( psz_key );
free( psz_ca );
free( psz_crl );
if( p_sys->p_httpd_host == NULL )
{
msg_Err( p_access, "cannot listen on %s port %d",
psz_bind_addr, i_bind_port );
free( psz_file_name );
free( psz_parser );
free( p_sys );
return VLC_EGENERIC;
}
free( psz_parser );
psz_user = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "user" );
psz_pwd = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "pwd" );
if( p_access->psz_access && !strcmp( p_access->psz_access, "mmsh" ) )
{
psz_mime = strdup( "video/x-ms-asf-stream" );
}
else
{
psz_mime = var_GetNonEmptyString( p_access, SOUT_CFG_PREFIX "mime" );
}
p_sys->p_httpd_stream =
httpd_StreamNew( p_sys->p_httpd_host, psz_file_name, psz_mime,
psz_user, psz_pwd, NULL );
free( psz_user );
free( psz_pwd );
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_file_name );
free( p_sys );
return VLC_EGENERIC;
}
#if 0 //def HAVE_AVAHI_CLIENT
if( var_InheritInteger(p_this, SOUT_CFG_PREFIX "bonjour") )
{
char *psz_txt, *psz_name;
playlist_t *p_playlist = pl_Get( p_access );
char *psz_uri = input_item_GetURI( p_playlist->status.p_item->p_input );
char *psz_newuri = psz_uri;
psz_name = strrchr( psz_newuri, DIRECTORY_SEPARATOR );
if( psz_name != NULL ) psz_name++;
else psz_name = psz_newuri;
if( psz_file_name &&
asprintf( &psz_txt, "path=%s", psz_file_name ) == -1 )
{
free( psz_uri );
return VLC_ENOMEM;
}
p_sys->p_bonjour = bonjour_start_service( (vlc_object_t *)p_access,
strcmp( p_access->psz_access, "https" )
? "_vlc-http._tcp" : "_vlc-https._tcp",
psz_name, i_bind_port, psz_txt );
free( psz_uri );
free( psz_txt );
if( p_sys->p_bonjour == NULL )
msg_Err( p_access, "unable to start requested Bonjour announce" );
}
else
p_sys->p_bonjour = NULL;
#endif
free( psz_file_name );
p_sys->i_header_allocated = 1024;
p_sys->i_header_size = 0;
p_sys->p_header = xmalloc( p_sys->i_header_allocated );
p_sys->b_header_complete = false;
p_access->pf_write = Write;
p_access->pf_seek = Seek;
p_access->pf_control = Control;
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;
#if 0 //def HAVE_AVAHI_CLIENT
if( p_sys->p_bonjour != NULL )
bonjour_stop_service( p_sys->p_bonjour );
#endif
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 );
}
static int Control( sout_access_out_t *p_access, int i_query, va_list args )
{
(void)p_access;
switch( i_query )
{
case ACCESS_OUT_CONTROLS_PACE:
*va_arg( args, bool * ) = false;
break;
default:
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Write:
*****************************************************************************/
static ssize_t 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;
int i_len = 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 = 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 = xrealloc( 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 = true;
httpd_StreamHeader( p_sys->p_httpd_stream, p_sys->p_header,
p_sys->i_header_size );
}
i_len += p_buffer->i_buffer;
/* 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 : i_len );
}
/*****************************************************************************
* Seek: seek to a specific location in a file
*****************************************************************************/
static int Seek( sout_access_out_t *p_access, off_t i_pos )
{
(void)i_pos;
msg_Warn( p_access, "HTTP sout access cannot seek" );
return VLC_EGENERIC;
}