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<?php
/***************************************************************************
* functions_session.inc.php *
* ------------------- *
* application : PhpWebGallery 1.3 *
* author : Pierrick LE GALL <pierrick@z0rglub.com> *
* *
***************************************************************************
***************************************************************************
* *
* 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; *
* *
***************************************************************************/
function generate_key()
{
global $conf;
$md5 = md5( substr( microtime(), 2, 6 ).$conf['session_keyword'] );
$init = "";
for ( $i = 0; $i < strlen( $md5 ); $i++ )
{
if ( is_numeric( $md5[$i] ) )
{
$init.= "$md5[$i]";
}
}
$init = substr( $init, 0, 8 );
mt_srand( $init );
$key = "";
for ( $i = 0; $i < $conf['session_id_size']; $i++ )
{
$c = mt_rand( 0, 2 );
if ( $c == 0 )
{
$key .= chr( mt_rand( 65, 90 ) );
}
elseif ( $c == 1 )
{
$key .= chr( mt_rand( 97, 122 ) );
}
else
{
$key .= mt_rand( 0, 9 );
}
}
return $key;
}
function session_create( $pseudo )
{
global $conf,$prefixeTable,$REMOTE_ADDR;
// 1. trouver une cl� de session inexistante
$id_found = false;
while ( !$id_found )
{
$generated_id = generate_key();
$query = 'select id';
$query.= ' from '.$prefixeTable.'sessions';
$query.= " where id = '".$generated_id."';";
$result = mysql_query( $query );
if ( mysql_num_rows( $result ) == 0 )
{
$id_found = true;
}
}
// 2. r�cup�ration de l'id de l'utilisateur dont le pseudo
// est pass� en param�tre
$query = 'select id';
$query.= ' from '.$prefixeTable.'users';
$query.= " where pseudo = '".$pseudo."';";
$row = mysql_fetch_array( mysql_query( $query ) );
$user_id = $row['id'];
// 3. insertion de la session dans la base de donn�e
$expiration = $conf['session_time']*60+time();
$query = 'insert into '.$prefixeTable.'sessions';
$query.= ' (id,user_id,expiration,ip) values';
$query.= "('".$generated_id."','".$user_id;
$query.= "','".$expiration."','".$REMOTE_ADDR."');";
mysql_query( $query );
return $generated_id;
}
function add_session_id_to_url( $url, $redirect = false )
{
global $page, $user;
$amp = "&";
if ( $redirect )
{
$amp = "&";
}
if ( !$user['is_the_guest'] )
{
if ( ereg( "\.php\?",$url ) )
{
return $url.$amp."id=".$page['session_id'];
}
else
{
return $url."?id=".$page['session_id'];
}
}
else
{
return $url;
}
}
function add_session_id( $url, $redirect = false )
{
global $page, $user;
$amp = "&";
if ( $redirect )
{
$amp = "&";
}
if ( !$user['is_the_guest'] )
{
if ( ereg( "\.php\?",$url ) )
{
return $url.$amp."id=".$page['session_id'];
}
else
{
return $url."?id=".$page['session_id'];
}
}
else
{
return $url;
}
}
?>
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