274 lines
7.6 KiB
PHP
274 lines
7.6 KiB
PHP
<?php
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namespace lib;
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/**
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* 极验行为式验证安全平台，php 网站主后台包含的库文件
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*
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* @author Tanxu
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*/
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class GeetestLib {
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const GT_SDK_VERSION = 'php_3.0.0';
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public static $connectTimeout = 1;
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public static $socketTimeout = 1;
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private $response;
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private $captcha_id;
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private $private_key;
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public function __construct($captcha_id, $private_key) {
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$this->captcha_id = $captcha_id;
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$this->private_key = $private_key;
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}
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/**
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* 判断极验服务器是否down机
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*
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* @param array $data
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* @return int
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*/
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public function pre_process($param, $new_captcha=1) {
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if(!empty($this->captcha_id) && !empty($this->private_key)){
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$data = array('gt'=>$this->captcha_id,
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'new_captcha'=>$new_captcha
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);
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$data = array_merge($data,$param);
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$query = http_build_query($data);
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$url = "http://api.geetest.com/register.php?" . $query;
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$challenge = $this->send_request($url);
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if (strlen($challenge) != 32) {
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$this->failback_process();
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return 0;
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}
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$this->success_process($challenge);
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return 1;
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}else{
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$url = "https://www.geetest.com/demo/gt/register-slide?t=" . time() . "123";
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$data = get_curl($url,0,'https://www.geetest.com/demo/slide-popup.html');
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$this->response = json_decode($data, true);
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return 1;
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}
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}
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/**
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* @param $challenge
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*/
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private function success_process($challenge) {
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$challenge = md5($challenge . $this->private_key);
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$result = array(
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'success' => 1,
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'gt' => $this->captcha_id,
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'challenge' => $challenge,
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'new_captcha'=>1
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);
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$this->response = $result;
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}
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/**
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*
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*/
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private function failback_process() {
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$rnd1 = md5(rand(0, 100));
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$rnd2 = md5(rand(0, 100));
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$challenge = $rnd1 . substr($rnd2, 0, 2);
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$result = array(
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'success' => 0,
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'gt' => $this->captcha_id,
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'challenge' => $challenge,
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'new_captcha'=>1
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);
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$this->response = $result;
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}
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/**
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* @return mixed
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*/
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public function get_response_str() {
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return json_encode($this->response);
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}
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/**
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* 返回数组方便扩展
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*
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* @return mixed
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*/
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public function get_response() {
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return $this->response;
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}
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/**
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* 正常模式获取验证结果
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*
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* @param string $challenge
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* @param string $validate
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* @param string $seccode
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* @param array $param
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* @return int
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*/
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public function success_validate($challenge, $validate, $seccode,$param, $json_format=1) {
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if(!empty($this->captcha_id) && !empty($this->private_key)){
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if (!$this->check_validate($challenge, $validate)) {
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return 0;
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}
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$query = array(
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"seccode" => $seccode,
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"timestamp"=>time(),
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"challenge"=>$challenge,
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"captchaid"=>$this->captcha_id,
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"json_format"=>$json_format,
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"sdk" => self::GT_SDK_VERSION
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);
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$query = array_merge($query,$param);
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$url = "http://api.geetest.com/validate.php";
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$codevalidate = $this->post_request($url, $query);
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$obj = json_decode($codevalidate,true);
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if ($obj === false){
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return 0;
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}
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if ($obj['seccode'] == md5($seccode)) {
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return 1;
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} else {
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return 0;
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}
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}else{
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$url = "https://www.geetest.com/demo/gt/validate-slide";
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$post = "geetest_challenge=".$challenge."&geetest_validate=".$validate."&geetest_seccode=".$seccode;
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$data = get_curl($url,$post,'https://www.geetest.com/demo/slide-popup.html');
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$arr = json_decode($data, true);
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if($arr['status'] == 'success')return 1;
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else return 0;
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}
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}
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/**
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* 宕机模式获取验证结果
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*
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* @param $challenge
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* @param $validate
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* @param $seccode
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* @return int
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*/
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public function fail_validate($challenge, $validate, $seccode) {
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if(md5($challenge) == $validate){
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return 1;
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}else{
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return 0;
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}
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}
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/**
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* @param $challenge
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* @param $validate
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* @return bool
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*/
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private function check_validate($challenge, $validate) {
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if (strlen($validate) != 32) {
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return false;
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}
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if (md5($this->private_key . 'geetest' . $challenge) != $validate) {
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return false;
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}
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return true;
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}
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/**
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* GET 请求
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*
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* @param $url
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* @return mixed|string
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*/
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private function send_request($url) {
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if (function_exists('curl_exec')) {
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, self::$connectTimeout);
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curl_setopt($ch, CURLOPT_TIMEOUT, self::$socketTimeout);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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$curl_errno = curl_errno($ch);
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$data = curl_exec($ch);
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curl_close($ch);
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if ($curl_errno >0) {
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return 0;
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}else{
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return $data;
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}
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} else {
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$opts = array(
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'http' => array(
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'method' => "GET",
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'timeout' => self::$connectTimeout + self::$socketTimeout,
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)
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);
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$context = stream_context_create($opts);
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$data = @file_get_contents($url, false, $context);
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if($data){
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return $data;
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}else{
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return 0;
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}
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}
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}
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/**
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*
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* @param $url
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* @param array $postdata
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* @return mixed|string
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*/
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private function post_request($url, $postdata = '') {
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if (!$postdata) {
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return false;
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}
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$data = http_build_query($postdata);
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if (function_exists('curl_exec')) {
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, self::$connectTimeout);
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curl_setopt($ch, CURLOPT_TIMEOUT, self::$socketTimeout);
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//不可能执行到的代码
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if (!$postdata) {
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curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
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} else {
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curl_setopt($ch, CURLOPT_POST, 1);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
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}
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$data = curl_exec($ch);
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if (curl_errno($ch)) {
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$err = sprintf("curl[%s] error[%s]", $url, curl_errno($ch) . ':' . curl_error($ch));
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$this->triggerError($err);
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}
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curl_close($ch);
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} else {
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if ($postdata) {
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$opts = array(
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'http' => array(
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'method' => 'POST',
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'header' => "Content-type: application/x-www-form-urlencoded\r\n" . "Content-Length: " . strlen($data) . "\r\n",
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'content' => $data,
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'timeout' => self::$connectTimeout + self::$socketTimeout
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)
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);
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$context = stream_context_create($opts);
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$data = file_get_contents($url, false, $context);
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}
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}
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return $data;
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}
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/**
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* @param $err
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*/
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private function triggerError($err) {
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trigger_error($err);
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}
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}
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