以Discuz! X2.5为例分析代码实现。 1.注册找到source\class\class_member.php文件,有如下代码:
- $uid = uc_user_register(addslashes($username), $password, $email, $questionid, $answer, $_G['clientip']);
uc_user_register定义在uc_client\client.php文件,代码如下:
- function uc_user_register($username, $password, $email, $questionid = '', $answer = '', $regip = '') {
- return call_user_func(UC_API_FUNC, 'user', 'register', array('username'=>$username, 'password'=>$password, 'email'=>$email, 'questionid'=>$questionid, 'answer'=>$answer, 'regip' => $regip));
- }
此函数会回调uc_server下的方法,执行文件为uc_server\control\user.php,执行代码如下:
- function onregister() {
- $this->init_input();
- $username = $this->input('username');
- $password = $this->input('password');
- $email = $this->input('email');
- $questionid = $this->input('questionid');
- $answer = $this->input('answer');
- $regip = $this->input('regip');
-
- if(($status = $this->_check_username($username)) < 0) {
- return $status;
- }
- if(($status = $this->_check_email($email)) < 0) {
- return $status;
- }
-
- $uid = $_ENV['user']->add_user($username, $password, $email, 0, $questionid, $answer, $regip);
- return $uid;
- }
add_user定义在uc_server\model\user.php文件,代码如下:
- function add_user($username, $password, $email, $uid = 0, $questionid = '', $answer = '', $regip = '') {
- $regip = empty($regip) ? $this->base->onlineip : $regip;
- $salt = substr(uniqid(rand()), -6);
- $password = md5(md5($password).$salt);
- $sqladd = $uid ? "uid='".intval($uid)."'," : '';
- $sqladd .= $questionid > 0 ? " secques='".$this->quescrypt($questionid, $answer)."'," : " secques='',";
- $this->db->query("INSERT INTO ".UC_DBTABLEPRE."members SET $sqladd username='$username', password='$password', email='$email', regip='$regip', regdate='".$this->base->time."', salt='$salt'");
- $uid = $this->db->insert_id();
- $this->db->query("INSERT INTO ".UC_DBTABLEPRE."memberfields SET uid='$uid'");
- return $uid;
- }
这里会将用户信息写入Ucenter的用户表中。
在这里可以看到用户密码不是用明文存储的,加密的格式为:
2.登录找到source\class\class_member.php文件,有如下代码:
- $result = userlogin($_GET['username'], $_GET['password'], $_GET['questionid'], $_GET['answer'], $this->setting['autoidselect'] ? 'auto' : $_GET['loginfield'], $_G['clientip']);
userlogin定义在source\function\function_member.php文件,函数内部有如下代码:
- if($isuid == 3) {
- if(!strcmp(dintval($username), $username)) {
- $return['ucresult'] = uc_user_login($username, $password, 1, 1, $questionid, $answer, $ip);
- } elseif(isemail($username)) {
- $return['ucresult'] = uc_user_login($username, $password, 2, 1, $questionid, $answer, $ip);
- }
- if($return['ucresult'][0] <= 0 && $return['ucresult'][0] != -3) {
- $return['ucresult'] = uc_user_login(addslashes($username), $password, 0, 1, $questionid, $answer, $ip);
- }
- } else {
- $return['ucresult'] = uc_user_login(addslashes($username), $password, $isuid, 1, $questionid, $answer, $ip);
- }
uc_user_login定义在uc_client\client.php文件,代码如下:
- function uc_user_login($username, $password, $isuid = 0, $checkques = 0, $questionid = '', $answer = '') {
- $isuid = intval($isuid);
- $return = call_user_func(UC_API_FUNC, 'user', 'login', array('username'=>$username, 'password'=>$password, 'isuid'=>$isuid, 'checkques'=>$checkques, 'questionid'=>$questionid, 'answer'=>$answer));
- return UC_CONNECT == 'mysql' ? $return : uc_unserialize($return);
- }
此函数会回调uc_server下的方法,执行文件为uc_server\control\user.php,执行代码如下:
- function onlogin() {
- $this->init_input();
- $isuid = $this->input('isuid');
- $username = $this->input('username');
- $password = $this->input('password');
- $checkques = $this->input('checkques');
- $questionid = $this->input('questionid');
- $answer = $this->input('answer');
- if($isuid == 1) {
- $user = $_ENV['user']->get_user_by_uid($username);
- } elseif($isuid == 2) {
- $user = $_ENV['user']->get_user_by_email($username);
- } else {
- $user = $_ENV['user']->get_user_by_username($username);
- }
-
- $passwordmd5 = preg_match('/^\w{32}$/', $password) ? $password : md5($password);
- if(empty($user)) {
- $status = -1;
- } elseif($user['password'] != md5($passwordmd5.$user['salt'])) {
- $status = -2;
- } elseif($checkques && $user['secques'] != '' && $user['secques'] != $_ENV['user']->quescrypt($questionid, $answer)) {
- $status = -3;
- } else {
- $status = $user['uid'];
- }
- $merge = $status != -1 && !$isuid && $_ENV['user']->check_mergeuser($username) ? 1 : 0;
- return array($status, $user['username'], $password, $user['email'], $merge);
- }
这里会验证用户输入的密码是否和Ucenter里存储的密码一致。
验证的格式为:
- 首先会验证用户密码是否为32位,如果不是则对用户输出的密码进行md5处理。(32位验证是后台设置的加密传输密码,开启后会先进行md5然后才传递给Ucenter)
- Ucenter里存储的对应用户的加密后的密码 == md5(格式化后的用户输入的密码 . Ucenter里存储的对应用户的6位随机串)
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