De antemano muchas gracias.
Añado el codigo de las dos paginas.
identificacion.php
Código PHP:
<?php require_once('Connections/pdcsls.php'); ?>
<?php
if (isset($_POST['CLAVE'])) {$_POST['CLAVE'] = sha1($_POST['CLAVE']);}
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
session_start();
}
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
$_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
if (isset($_POST['login'])) {
$loginUsername=$_POST['login'];
$password=$_POST['clave'];
$MM_fldUserAuthorization = "roll";
$MM_redirectLoginSuccess = "administradores.php";
$MM_redirectLoginFailed = "prueba.php";
$MM_redirecttoReferrer = false;
mysql_select_db($database_pdcsls, $pdcsls);
$LoginRS__query=sprintf("SELECT LOGIN, CLAVE, roll FROM usuario WHERE LOGIN=%s AND CLAVE=%s",
GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text"));
$LoginRS = mysql_query($LoginRS__query, $pdcsls) or die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
if ($loginFoundUser) {
$loginStrGroup = mysql_result($LoginRS,0,'roll');
//declare two session variables and assign them
$_SESSION['MM_Username'] = $loginUsername;
$_SESSION['MM_UserGroup'] = $loginStrGroup;
if (isset($_SESSION['PrevUrl']) && false) {
$MM_redirectLoginSuccess = $_SESSION['PrevUrl'];
}
header("Location: " . $MM_redirectLoginSuccess );
}
else {
header("Location: ". $MM_redirectLoginFailed );
}
}
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Identificación de Usuarios</title>
<link href="CSS/Estilo.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div align="center" class="LetraAzul">IDENTIFIQUESE</div>
<p> </p>
<form ACTION="<?php echo $loginFormAction; ?>" id="form1" name="form1" method="POST">
<p> </p>
<p class="alingvertical"><strong>USUARIO </strong>
<label for="login"> </label>
<input type="text" name="login" id="login" />
</p>
<p class="alingvertical"><strong>CONTRASEÑA</strong>
<label for="clave"></label>
<input type="password" name="clave" id="clave" />
</p>
<p class="alingvertical">
<label for="enviar"></label>
<input name="enviar" type="submit" id="enviar" onclick="MM_validateForm('login','','R','clave','','R');return document.MM_returnValue" value="Identiquese!!" />
</p>
<p> </p>
</form>
<p> </p>
</body>
</html> Código PHP:
<?php require_once('Connections/pdcsls.php'); ?><?php
//initialize the session
if (!isset($_SESSION)) {
session_start();
}
// ** Logout the current user. **
$logoutAction = $_SERVER['PHP_SELF']."?doLogout=true";
if ((isset($_SERVER['QUERY_STRING'])) && ($_SERVER['QUERY_STRING'] != "")){
$logoutAction .="&". htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")){
//to fully log out a visitor we need to clear the session varialbles
$_SESSION['MM_Username'] = NULL;
$_SESSION['MM_UserGroup'] = NULL;
$_SESSION['PrevUrl'] = NULL;
unset($_SESSION['MM_Username']);
unset($_SESSION['MM_UserGroup']);
unset($_SESSION['PrevUrl']);
$logoutGoTo = "identificacion.php";
if ($logoutGoTo) {
header("Location: $logoutGoTo");
exit;
}
}
?>
<?php
if (!isset($_SESSION)) {
session_start();
}
$MM_authorizedUsers = "A,U";
$MM_donotCheckaccess = "false";
// *** Restrict Access To Page: Grant or deny access to this page
function isAuthorized($strUsers, $strGroups, $UserName, $UserGroup) {
// For security, start by assuming the visitor is NOT authorized.
$isValid = False;
// When a visitor has logged into this site, the Session variable MM_Username set equal to their username.
// Therefore, we know that a user is NOT logged in if that Session variable is blank.
if (!empty($UserName)) {
// Besides being logged in, you may restrict access to only certain users based on an ID established when they login.
// Parse the strings into arrays.
$arrUsers = Explode(",", $strUsers);
$arrGroups = Explode(",", $strGroups);
if (in_array($UserName, $arrUsers)) {
$isValid = true;
}
// Or, you may restrict access to only certain users based on their username.
if (in_array($UserGroup, $arrGroups)) {
$isValid = true;
}
if (($strUsers == "") && false) {
$isValid = true;
}
}
return $isValid;
}
$MM_restrictGoTo = "prueba.php";
if (!((isset($_SESSION['MM_Username'])) && (isAuthorized("",$MM_authorizedUsers, $_SESSION['MM_Username'], $_SESSION['MM_UserGroup'])))) {
$MM_qsChar = "?";
$MM_referrer = $_SERVER['PHP_SELF'];
if (strpos($MM_restrictGoTo, "?")) $MM_qsChar = "&";
if (isset($QUERY_STRING) && strlen($QUERY_STRING) > 0)
$MM_referrer .= "?" . $QUERY_STRING;
$MM_restrictGoTo = $MM_restrictGoTo. $MM_qsChar . "accesscheck=" . urlencode($MM_referrer);
header("Location: ". $MM_restrictGoTo);
exit;
}
?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
$colname_usuarios = "-1";
if (isset($_SESSION['MM_Username'])) {
$colname_usuarios = $_SESSION['MM_Username'];
}
mysql_select_db($database_pdcsls, $pdcsls);
$query_usuarios = sprintf("SELECT NOMBRE1, NOMBRE2, APELLIDO1, APELLIDO2 FROM usuario WHERE LOGIN = %s", GetSQLValueString($colname_usuarios, "text"));
$usuarios = mysql_query($query_usuarios, $pdcsls) or die(mysql_error());
$row_usuarios = mysql_fetch_assoc($usuarios);
$totalRows_usuarios = mysql_num_rows($usuarios);
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Administradores</title>
<style type="text/css">
<!--
.Estilo2 {
color: #0000FF
}
-->
</style>
</head>
<body>
<p>BIENVENIDO, <?php echo $row_usuarios['NOMBRE1']; ?> <?php echo $row_usuarios['NOMBRE2']; ?> <?php echo $row_usuarios['APELLIDO1']; ?> <?php echo $row_usuarios['APELLIDO2']; ?></p>
<?php if ($_SESSION['MM_UserGroup']=='A'){ ?>
<p>ADMINISTRADOR</p>
<?php } else { ?>
<p>Contenido y enlaces para Usuarios NO JODAAAAAAAAAAAAA</p>
<p>
<?php } ?>
</p>
<p> </p>
<p> <a href="<?php echo $logoutAction ?>" class="Estilo2">Desconectar</a></p>
</body>
</html>
<?php
mysql_free_result($usuarios);
?> 
Ayuda!!!! 
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