php sso单点登录实现代码

时间：2015-01-23 来源：西部数据作者：西部数据

下面详细讲到了几点.1、点击登录跳转到SSO登录页面并带上当前应用的callback地址 2、登录成功后生成COOKIE并将COOKIE传给callback地址 3、callback地址接收SSO的COOKIE并设置在当前域下再跳回到应用1即完成登录 4、再在应用程序需要登录的地方嵌入一个iframe用来实时检测登录状态,代码如下:

<?php

//index.php 应用程序页面

header('Content-Type:text/html; charset=utf-8');

$sso_address = 'http://2spaoku.com/sso/login.php'; //你SSO所在的域名

$callback_address = 'http://'.$_SERVER['HTTP_HOST']

                    .str_replace('index.php','',$_SERVER['SCRIPT_NAME'])

                    .'callback.php'; //callback地址用于回调设置cookie

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

    exit("欢迎您{$_COOKIE['sign']} <a href="login.php?logout">退出</a>");

}else{

    echo '您还未登录 <a href="'.$sso_address.'?callback='.$callback_address.'">点此登录</a>';

}

?>

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

<?php

//login.php SSO登录页面

header('Content-Type:text/html; charset=utf-8');

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

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

    unset($_GET['logout']);

    header('location:index.php');

}

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

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

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

}

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

?>

<form method="post">

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

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

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

<input type="submit" value="登录" />

</form>

<?php

}else{

    $query = http_build_query($_COOKIE);

    echo "系统检测到您已登录 {$_COOKIE['sign']} <a href="{$_GET['callback']}?{$query}">授权</a> <a href="?logout">退出</a>";

}

?>

<?php

//callback.php 回调页面用来设置跨域COOKIE

header('Content-Type:text/html; charset=utf-8');

if(emptyempty($_GET)){

    exit('您还未登录');

}else{

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

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

    }

    header("location:index.php");

}

?>

<?php

//connect.php 用来检测登录状态的页面，内嵌在页面的iframe中

header('Content-Type:text/html; charset=utf-8');

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

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

    $query = http_build_query($_COOKIE);

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

}else{ //开源代码phpfensi.com

    exit;

}

?>

<html><script type="text/javascript">top.location.href="<?php echo $callback; ?>";</script></html>