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/* update.c
Copyright (c) 2003-2012 HandBrake Team
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 v2.
For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
#include "hb.h"
static void UpdateFunc( void * );
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 );
}
static void UpdateFunc( void * _data )
{
hb_update_t * data = (hb_update_t *) _data;
char* const url = HB_PROJECT_URL_APPCAST;
char* const urlz = url + strlen( HB_PROJECT_URL_APPCAST ); /* marks null-term */
char url_host[64];
char url_path[128];
char query[256];
hb_net_t * net;
int ret;
char buf[4096];
char * cur, * end;
int size;
int i_vers;
char s_vers[32]; /* must be no larger than hb_handle_s.version */
int i;
/* Setup hb_query and hb_query_two with the correct appcast file */
hb_log( "Using %s", url );
/* extract host part */
cur = strstr( HB_PROJECT_URL_APPCAST, "//" );
if( !cur || cur+2 > urlz )
goto error;
cur += 2;
end = strstr( cur, "/" );
if( !end || end > urlz )
goto error;
memset( url_host, 0, sizeof(url_host) );
strncpy( url_host, cur, (end-cur) );
/* extract path part */
memset( url_path, 0, sizeof(url_path) );
strncpy( url_path, end, (urlz-end) );
if( !strlen( url_path ))
goto error;
memset( query, 0, sizeof(query) );
snprintf( query, sizeof(query), "GET %s HTTP/1.0\r\nHost: %s\r\n\r\n", url_path, url_host );
/* Grab the data from the web server */
if( !( net = hb_net_open( url_host, 80 ) ) )
{
goto error;
}
if( hb_net_send( net, query ) < 0 )
{
hb_log("Error: Unable to connect to server");
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 ) )
{
hb_log("Error: We did not get a 200 OK from the server. \n");
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 )
{
hb_log("Error: Found the end of the buffer before the end of the HTTP header information! \n");
goto error;
}
/*
* 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 ))
{
hb_log("Error: Did not find the <cli> tag in the expected maximum amount of characters into the file. \n");
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 )
{
hb_log("Error: Unexpected end of buffer! Could not find the build information. \n");
goto error;
}
/* Stable HB_PROJECT_BUILD */
i_vers = strtol( cur, &cur, 10 );
if( cur >= end )
{
hb_log("Error: Unexpected end of buffer! \n");
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 )
{
hb_log("Error: Unexpected end of buffer! Could not get version number. \n");
goto error;
}
memset( s_vers, 0, sizeof( s_vers ) );
for( i = 0; i < sizeof( s_vers ) - 1 && cur < end && *cur != '"'; i++, cur++ )
{
s_vers[i] = *cur;
/* If the CLI tag has not been found in the first 768 characters, or the end is reached, something bad happened.*/
if (( cur >= end ))
{
hb_log("Error: Version number too long, or end of buffer reached. \n");
goto error;
}
}
if( cur >= end )
{
goto error;
}
/* Print the version information */
hb_log( "latest: %s, build %d", s_vers, i_vers );
/* Return the build information */
if( i_vers > HB_PROJECT_BUILD )
{
memcpy( data->version, s_vers, sizeof(s_vers) );
*(data->build) = i_vers;
}
error:
free( data );
return;
}
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