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
1 <?php 2 //index.php 应用程序页面 3 header(‘Content-Type:text/html; charset=utf-8‘); 4 $sso_address ?????= ‘http://www.c.com/sso_login.php‘; //你SSO所在的域名 5 $callback_address = ‘http://‘ . $_SERVER[‘HTTP_HOST‘] 6 ????. str_replace(‘index.php‘, ‘‘, $_SERVER[‘SCRIPT_NAME‘]) 7 ????. ‘callback.php‘; //callback地址用于回调设置cookie 8 ?9 if (isset($_COOKIE[‘sign‘])) {10 ????exit("欢迎您{$_COOKIE[‘sign‘]} <a href=\"login.php?logout\">退出</a>");11 } else {12 ????echo ‘您还未登录 <a href="‘ . $sso_address . ‘?callback=‘ . $callback_address . ‘">点此登录</a>‘;13 }14 ?>15 <iframe src="<?php echo $sso_address ?>?callback=<?php echo $callback_address ?>" frameborder="0" width="0"16 ????????height="0"></iframe>17 18 <?php19 //callback.php 回调页面用来设置跨域COOKIE20 header(‘Content-Type:text/html; charset=utf-8‘);21 if (empty($_GET)) {22 ????exit(‘您还未登录‘);23 } else {24 ????foreach ($_GET as $key => $val) {25 ????????setcookie($key, $val, 0, ‘‘);26 ????}27 ????header("location:index.php");28 }29 ?>30 31 <?php32 //connect.php 用来检测登录状态的页面，内嵌在页面的iframe中33 header(‘Content-Type:text/html; charset=utf-8‘);34 if (isset($_COOKIE[‘sign‘])) {35 ????$callback = urldecode($_GET[‘callback‘]);36 ????unset($_GET[‘callback‘]);37 ????$query ???= http_build_query($_COOKIE);38 ????$callback = $callback . "?{$query}";39 } else {40 ????exit;41 }42 ?>43 <html>44 <script type="text/javascript">top.location.href = "<?php echo $callback; ?>";</script>45 </html>46 47 48 <?php49 50 //login.php SSO登录页面51 header(‘Content-Type:text/html; charset=utf-8‘);52 if (isset($_GET[‘logout‘])) {53 ????setcookie(‘sign‘, ‘‘, -300);54 ????unset($_GET[‘logout‘]);55 ????header(‘location:index.php‘);56 }57 58 if (isset($_POST[‘username‘]) && isset($_POST[‘password‘])) {59 ????setcookie(‘sign‘, $_POST[‘username‘], 0, ‘‘);60 ????header("location:" . $_POST[‘callback‘] . "?sign={$_POST[‘username‘]}");61 }62 63 if (empty($_COOKIE[‘sign‘])) {64 ?????>65 66 ????<form method="post">67 ????????<p>用户名：<input type="text" name="username"/></p>68 ????????<p>密 码：<input type="password" name="password"/></p>69 ????????<input type="hidden" name="callback" value="<?php echo $_GET[‘callback‘]; ?>"/>70 ????????<input type="submit" value="登录"/>71 ????</form>72 73 74 ????<?php75 } else {76 ????$query = http_build_query($_COOKIE);77 ????echo "系统检测到您已登录 {$_COOKIE[‘sign‘]} <a href=\"{$_GET[‘callback‘]}?{$query}\">授权</a> <a href=\"?logout\">退出</a>";78 }done!
php实现SSO单点登录实例
原文地址：https://www.cnblogs.com/liliuguang/p/10402497.html