index.php

<?php

//index.php  

$sso_address = 'http://192.168.1.231/sso/login.php';

$callback_address = 'http://192.168.1.231/sso/callback.php';

if(isset($_COOKIE['sign'])){ 

    exit("Have login:{$_COOKIE['sign']} <a href=\"login.php?logout\">Logout</a>"); 

}else{ 

    echo 'Havent login <a href="'.$sso_address.'?callback='.$callback_address.'">Click here to login</a>'; 

} 

?>

<iframe src="<?php echo $sso_address ?>?callback=<?php echo $callback_address ?>" frameborder="0"  width="0" height="0"></iframe>

connect.php

<?php

//connect.php

if(isset($_COOKIE['sign'])){ 

    $callback = urldecode($_GET['callback']);

    unset($_GET['callback']); 

    $query = http_build_query($_COOKIE); 

    $callback = $callback."?{$query}"; 

}else{ 

    exit; 

} 

?>

<script>

    top.location.href="<?php echo $callback; ?>";

</script>

login.php

<?php

//login.php

if(isset($_GET['logout'])){ 

    setcookie('sign','',-300); 

    header('location:index.php'); 

} 

if(isset($_POST['username']) && isset($_POST['password'])){ 

    setcookie('sign',$_POST['username'],0,''); 

    header("location:".$_POST['callback']."?sign={$_POST['username']}"); 

} 

if(empty($_COOKIE['sign'])){ 

?>

<form method="post"> 

<p>username：<input type="text" name="username" /></p> 

<p>password：<input type="password" name="password" /></p> 

<input type="hidden" name="callback" value="<?php echo $_GET['callback']; ?>" /> 

<input type="submit" value="Login" /> 

</form> 

<?php 

}else{ 

    $query = http_build_query($_COOKIE); 

    echo "Have login: {$_COOKIE['sign']} <a href=\"{$_GET['callback']}?{$query}\">Access</a> <a href=\"?logout\">Logout</a>"; 

} 

?>

callback.php

<?php

//callback.php

if(empty($_GET)){ 

    exit('Havent login'); 

}else{ 

    foreach($_GET as $key=>$val){ 

        setcookie($key,$val,0,''); 

    } 

    header("location:index.php"); 

}

?>