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/* $Id: update.c,v 1.7 2005/03/26 23:04:14 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#include "hb.h"
static void UpdateFunc( void * );
static int find_file( );
typedef struct
{
int * build;
char * version;
} hb_update_t;
hb_thread_t * hb_update_init( int * build, char * version )
{
hb_update_t * data = calloc( sizeof( hb_update_t ), 1 );
data->build = build;
data->version = version;
return hb_thread_init( "update", UpdateFunc, data,
HB_NORMAL_PRIORITY );
}
/*
* Find out which appcast we want to use, and return appcast.xml or NULL
*/
static int find_file ( void )
{
return ( strstr( APPCAST_URL, "appcast.xml" ) != NULL );
}
static void UpdateFunc( void * _data )
{
hb_update_t * data = (hb_update_t *) _data;
/* New code to handle the hb_query stuff */
int file = find_file();
char* hb_query;
if (file != NULL)
{
hb_query = "GET /appcast.xml HTTP/1.0\r\nHost: handbrake.fr\r\n\r\n";
}else {
hb_query = "GET /appcast_unstable.xml HTTP/1.0\r\nHost: handbrake.fr\r\n\r\n";
}
// ####################### Grab the data from the web server ##########################
hb_net_t * net;
int ret;
char buf[4096];
char * cur, * end;
int size;
int stable;
char stable_str[16];
int i;
if( !( net = hb_net_open( "handbrake.fr", 80 ) ) )
{
goto error;
}
if( hb_net_send( net, hb_query ) < 0 )
{
hb_net_close( &net );
goto error;
}
size = 0;
memset( buf, 0, 4096 );
for( ;; )
{
ret = hb_net_recv( net, &buf[size], sizeof( buf ) - size );
if( ret < 1 )
{
hb_net_close( &net );
break;
}
size += ret;
}
cur = buf;
end = &buf[sizeof( buf )];
/* Make sure we got it */
cur += 9;
if( size < 15 || strncmp( cur, "200 OK", 6 ) )
{
/* Something went wrong */
goto error;
}
cur += 6;
/* Find the end of the headers and the beginning of the content */
for( ; &cur[3] < end; cur++ )
{
if( cur[0] == '\r' && cur[1] == '\n' &&
cur[2] == '\r' && cur[3] == '\n' )
{
cur += 4;
break;
}
}
if( cur >= end )
{
goto error;
}
// ####################### Version Checking Here ##########################
/*
* Find the <cli> tag
* Scan though each character of the buffer until we find that the first 4 characters of "cur" are "<cli"
*/
for(i=0 ; &cur[3] < end; i++, cur++ )
{
if( cur[0] == 'c' && cur[1] == 'l' && cur[2] == 'i' && cur[3] == '>' )
{
cur += 1;
break;
}
// If the CLI tag has not been found in the first 768 characters, or the end is reached, something bad happened.
if (( i > 768) || ( cur >= end ))
{
goto error;
}
}
if( cur >= end )
{
goto error;
}
/*
* Ok, The above code didn't position cur, it only found <cli so we need to shift cur along 3 places.
* After which, the next 10 characters are the build number
*/
cur += 3;
if( cur >= end )
{
goto error;
}
stable = strtol( cur, &cur, 10 );
if( cur >= end )
{
goto error;
}
/*
* The Version number is 2 places after the build, so shift cur, 2 places.
* Get all the characters in cur until the point where " is found.
*/
cur += 2;
if( cur >= end )
{
goto error;
}
memset( stable_str, 0, sizeof( stable_str ) );
for( i = 0; i < sizeof( stable_str ) - 1 && cur < end && *cur != '"'; i++, cur++ )
{
stable_str[i] = *cur;
// If the version number is longer than 7 characters, or the end is reached, something has gone wrong.
if (( i > 7) || ( cur >= end ))
{
goto error;
}
}
if( cur >= end )
{
goto error;
}
hb_log( "latest stable: %s, build %d", stable_str, stable );
// END OF STABLE INFO ###################################################
if( stable > HB_BUILD )
{
memcpy( data->version, stable_str, sizeof( stable_str ) );
*(data->build) = stable;
}
error:
free( data );
return;
}
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