usbloadergx/source/network/update.cpp

/***************************************************************************
* Copyright (C) 2009
* by Dimok
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any
* damages arising from the use of this software.
*
* Permission is granted to anyone to use this software for any
* purpose, including commercial applications, and to alter it and
* redistribute it freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you
* must not claim that you wrote the original software. If you use
* this software in a product, an acknowledgment in the product
* documentation would be appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and
* must not be misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*
* update.cpp
*
* Update operations
* for Wii-Xplorer 2009
***************************************************************************/
#include <stdio.h>
#include <string.h>
#include <ogcsys.h>

#include "http.h"
#include "networkops.h"
#include "HTML_Stream.h"

/****************************************************************************
 * Checking if an Update is available
 ***************************************************************************/
int CheckForBetaUpdate()
{
    int revnumber = 0;

    HTML_Stream HTML( "http://code.google.com/p/usbloader-gui/downloads/list" );

    const char * HTML_Pos = NULL;

    do
    {
        HTML_Pos = HTML.FindStringEnd( "href='" );
        char * tmpLink = HTML.CopyString( "'\"" );
        if ( tmpLink )
        {
            char *fileext = strrchr( tmpLink, '.' );
            if ( fileext )
            {
                if ( strcasecmp( fileext, ".dol" ) == 0 )
                {
                    char revtxt[80];
                    char *filename = strrchr( tmpLink, '/' ) + 2;
                    u8 n = 0;
                    for ( n = 0; n < strlen( filename ) - 2; n++ )
                        revtxt[n] = filename[n];
                    revtxt[n] = 0;
                    int fileRev = atoi( revtxt );

                    if ( fileRev > revnumber )
                    {
                        revnumber = fileRev;
                    }
                }
            }
            free( tmpLink );
        }
    }
    while ( HTML_Pos != NULL );

    return revnumber;
}