PHP SSO详解
SSO有三种模式:①跨子域单点登陆②完全跨单点域登陆③站群共享身份认证
第一种模式很简单,只需要将Cookie的域设置成多个应用的根域即可
第二种方式,也很简单,就是将所以应用的认证地址更换成同一个认证地址,每次查看是否在认证中心登陆,如果登陆了,给调用应用发放一个加密令牌即可
第三种跨域,就是来回跳转来回验证token略有麻烦
配置目录结构
在服务器根目录下,新建三个项目目录:
|–/网站根目录/
|–|–/oa/
|–|–/bbs/
|–|–/blog/
在根目录下新建functions.PHP脚本文件,具体内容如下:
<?php /** * 获取登陆token * @param string $url 获取token的地址 * 2017-01-03T13:08:43+0800 */ function getToken($url) { $bool = isLogin(); if ($bool) { // 如果登陆了跳转到本站首页 header('location: index.php'); exit(); } // 否则没有登陆,去另一个站点看是否登陆 header('location: '.$url); } // 校验令牌是否正确 function yzToken($domain) { $url = isset($_GET['url']) ? $_GET['url'] : ''; $username = isset($_GET['username']) ? $_GET['username'] : ''; $token = isset($_GET['token']) ? $_GET['token'] : ''; if (!empty($username) && !empty($token)) { $salt = 'taoip'; $_token = md5($salt.$username); // 校验第三方站点过来时的token是否正确 if ($_token == $token) { // 设置跳转过来的网站的Cookie setCook($username, $_token, $domain); header('location: index.php'); } } } // 设置cookie function setCook($username, $_password, $domain) { // 校验成功,开始登陆 setcookie('username', $username, time()+3600, '/', $domain); setcookie('token', $_password, time()+3600, '/', $domain); header('location: index.php'); } // 判断是否登陆 function isLogin() { $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $salt = 'taoip'; $_token = md5($salt.$username); if ($token == $_token) { return true; } else { return false; } } ?>
在oa项目目录下,新建index.php和login.php两个脚本文件
编辑index.php文件
<?php // OA站点 // (1)开启Session会话 session_name('taoip'); session_start(); // (2)获取用户名和token进行校验 $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $salt = 'taoip'; $_token = md5($salt.$username); if ($token != $_token) { header('location: login.php'); exit(); } echo "欢迎{$username}用户,访问OA站点"; ?>
编辑login.php文件
<?php // OA站点登陆系统 require '../functions.php'; // (2)验证 yzToken('taoip.cn'); // (1)判断是否登陆,登陆则跳转首页,未登录则去其他站点获取token $url = isset($_GET['url']) ? $_GET['url'] : ''; if (empty($url)) { getToken('http://dengpeng.cc/login.php?url=http://oa.taoip.cn/login.php'); } // (1)判断用户是否登陆 $bool = isLogin(); $url = isset($_GET['url']) ? $_GET['url'] : ''; if ($bool) { if (empty($url)) { header('location: index.php'); } else { $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $lurl = $url.'?username='.$username.'&token='.$token; header('location: '.$lurl); } } if (!empty($_POST)) { $username = isset($_POST['username']) ? $_POST['username'] : ''; $password = isset($_POST['password']) ? $_POST['password'] : ''; // 从库中查询用户密码 @$link = mysql_connect('localhost', 'root', ''); mysql_query('use sso', $link); mysql_query('set names utf8', $link); $sql = "select * from users where username = '".$username."'"; $user = mysql_fetch_assoc(mysql_query($sql, $link)); // 校验 $salt = 'taoip'; $_password = md5($salt.$username); // var_dump($user['password'] == $_password); // print_r($user);exit(); if ($user['password'] == $_password) { // 校验成功,开始登陆 setcookie('username', $username, time()+3600, '/', 'taoip.cn'); setcookie('token', $_password, time()+3600, '/', 'taoip.cn'); // 如果URL没有值重定向到首页,否则重定向到URL页面 if (empty($url)) { header('location: index.php'); } else { header('location: '.$lurl); } } } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="generator" content="Sublime Text 3114"> <meta name="author" content="3@dengpeng.cc"> <meta name="keywords" content=""> <meta name="description" content=""> <title>OA站点登陆系统</title> </head> <body> <div class="container"> <h2>oa.taoip.cn站点登陆系统</h2> <form action="" method="post"> <label for="">用户名</label> <input type="text" name="username"> <br> <label for="">密码</label> <input type="text" name="password"> <hr> <button type="submit">提交</button> </form> </div> </body> </html>
在bbs项目目录下,新建index.php和login.php两个脚本文件
编辑index.php文件
<?php /** * @author DengPeng <3@dengpeng.cc> * @since 2017/01/03 * @copyright copyright (c) 2017 zixue.it GPL * @license http://www.zixue.it/ */ // BBS站点 // (1)开启Session会话 session_name('taoip'); session_start(); // (2)获取用户名和token进行校验 $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $salt = 'taoip'; $_token = md5($salt.$username); if ($token != $_token) { header('location: login.php'); exit(); } echo "欢迎{$username}用户,访问BBS站点"; ?>
编辑login.php文件
<?php /** * @author DengPeng <3@dengpeng.cc> * @since 2017/01/03 * @copyright copyright (c) 2017 zixue.it GPL * @license http://www.zixue.it/ */ // BBS站点登陆系统 require '../functions.php'; // (2)验证 yzToken('taoip.cn'); // (1)判断是否登陆,登陆则跳转首页,未登录则去其他站点获取token $url = isset($_GET['url']) ? $_GET['url'] : ''; if (empty($url)) { getToken('http://dengpeng.cc/login.php?url=http://bbs.taoip.cn/login.php'); } // (1)判断用户是否登陆 $bool = isLogin(); $url = isset($_GET['url']) ? $_GET['url'] : ''; if ($bool) { if (empty($url)) { header('location: index.php'); } else { $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $lurl = $url.'?username='.$username.'&token='.$token; header('location: '.$lurl); } } if (!empty($_POST)) { $username = isset($_POST['username']) ? $_POST['username'] : ''; $password = isset($_POST['password']) ? $_POST['password'] : ''; // 从库中查询用户密码 @$link = mysql_connect('localhost', 'root', ''); mysql_query('use sso', $link); mysql_query('set names utf8', $link); $sql = "select * from users where username = '".$username."'"; $user = mysql_fetch_assoc(mysql_query($sql, $link)); // 校验 $salt = 'taoip'; $_password = md5($salt.$username); // var_dump($user['password'] == $_password); // print_r($user);exit(); if ($user['password'] == $_password) { // 校验成功,开始登陆 setcookie('username', $username, time()+3600, '/', 'taoip.cn'); setcookie('token', $_password, time()+3600, '/', 'taoip.cn'); // 如果URL没有值重定向到首页,否则重定向到URL页面 if (empty($url)) { header('location: index.php'); } else { header('location: '.$lurl); } } } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="generator" content="Sublime Text 3114"> <meta name="author" content="3@dengpeng.cc"> <meta name="keywords" content=""> <meta name="description" content=""> <title>BBS站点登陆系统</title> </head> <body> <div class="container"> <h2>bbs.taoip.cn站点登陆系统</h2> <form action="" method="post"> <label for="">用户名</label> <input type="text" name="username"> <br> <label for="">密码</label> <input type="text" name="password"> <hr> <button type="submit">提交</button> </form> </div> </body> </html>
在blog项目目录下,新建index.php和login.php两个脚本文件
编辑index.php文件
<?php /** * @author DengPeng <3@dengpeng.cc> * @since 2017/01/03 * @copyright copyright (c) 2017 zixue.it GPL * @license http://www.zixue.it/ */ // blog站点 // (1)开启Session会话 session_name('taoip'); session_start(); // (2)获取用户名和token进行校验 $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $salt = 'taoip'; $_token = md5($salt.$username); if ($token != $_token) { header('location: login.php'); exit(); } echo "欢迎{$username}用户,访问blog站点"; ?> <?php /** * @author DengPeng <3@dengpeng.cc> * @since 2017/01/03 * @copyright copyright (c) 2017 zixue.it GPL * @license http://www.zixue.it/ */ // blog站点 // (1)开启Session会话 session_name('taoip'); session_start(); // (2)获取用户名和token进行校验 $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $salt = 'taoip'; $_token = md5($salt.$username); if ($token != $_token) { header('location: login.php'); exit(); } echo "欢迎{$username}用户,访问blog站点"; ?>
编辑login.php文件
<?php /** * @author DengPeng <3@dengpeng.cc> * @since 2017/01/03 * @copyright copyright (c) 2017 zixue.it GPL * @license http://www.zixue.it/ */ // blog站点登陆系统 require '../functions.php'; // (2)验证 yzToken('dengpeng.cc'); // (1)判断是否登陆,登陆则跳转首页,未登录则去其他站点获取token $url = isset($_GET['url']) ? $_GET['url'] : ''; if (empty($url)) { getToken('http://oa.taoip.cn/login.php?url=http://dengpeng.cc/login.php'); } // (1)判断用户是否登陆 $bool = isLogin(); $url = isset($_GET['url']) ? $_GET['url'] : ''; if ($bool) { if (empty($url)) { header('location: index.php'); } else { $username = isset($_COOKIE['username']) ? $_COOKIE['username'] : ''; $token = isset($_COOKIE['token']) ? $_COOKIE['token'] : ''; $lurl = $url.'?username='.$username.'&token='.$token; header('location: '.$lurl); } } // (3)判断用户是否提交数据 if (!empty($_POST)) { $username = isset($_POST['username']) ? $_POST['username'] : ''; $password = isset($_POST['password']) ? $_POST['password'] : ''; // 从库中查询用户密码 @$link = mysql_connect('localhost', 'root', ''); mysql_query('use sso', $link); mysql_query('set names utf8', $link); $sql = "select * from users where username = '".$username."'"; $user = mysql_fetch_assoc(mysql_query($sql, $link)); // 校验 $salt = 'taoip'; $_password = md5($salt.$username); // var_dump($user['password'] == $_password); // print_r($user);exit(); if ($user['password'] == $_password) { setCook($username, $_password, 'dengpeng.cc'); if (empty($url)) { header('location: index.php'); } else { header('location: '.$lurl); } } } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="generator" content="Sublime Text 3114"> <meta name="author" content="3@dengpeng.cc"> <meta name="keywords" content=""> <meta name="description" content=""> <title>blog站点登陆系统</title> </head> <body> <div class="container"> <h2>dengpeng.cc站点登陆系统</h2> <form action="" method="post"> <label for="">用户名</label> <input type="text" name="username"> <br> <label for="">密码</label> <input type="text" name="password"> <hr> <button type="submit">提交</button> </form> </div> </body> </html>
配置本地虚拟主机
具体配置步骤,我想大家应该都会了,不需要我一一赘述.你只需要按照我给的参照,配置和不同域名对应目录的映射即可.
域名 /项目目录/
oa.taoip.cn /oa/
bbs.taoip.cn /bbs/
dengpeng.cc /blog/
恭喜您,已经完成了一个简单的SSO系统
配置完成后,记得重启Web服务器.然后你只需要访问这三个不同的站点,即可实现一个站点登陆,其他站点不再发送登陆请求.
感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！