File: /www/wwwroot//www.elwrky.com/addons/vaptcha/library/Vaptcha.php
<?php
namespace addons\vaptcha\library;
use think\facade\Cache;
class Vaptcha
{
// 验证单元vid
public $vid = '';
// 验证单元key
public $key = '';
// 二次验证地址
private $validata_url = 'http://0.vaptcha.com/verify';
// offline_key地址
private $offline_url = 'https://channel2.vaptcha.com/config/';
private $offline_imgurl = 'https://offline.vaptcha.com/';
public function __construct($vid, $key)
{
$this->vid = $vid;
$this->key = $key;
}
/**
* 二次验证
* @param String $knock 流水号
* @param String $token 验证成功后返回的标记
* @param Int $scene 场景号
* @return void
*/
public function validate($token, $scene = 0)
{
$str = 'ffline-';
if (empty($scene)) {
$scene = 0;
}
if (strpos($token, $str, 0) == 1) {
$res = $this->offlineValidate($token);
if ($res == 1) {
$data = json_encode(array(
'success' => 1,
));
} else {
$data = json_encode(array(
'success' => 0,
'msg' => "二次验证失败",
));
}
return $data;
} else {
return $this->normalValidate($token, $scene);
}
}
public function normalValidate($token, $scene)
{
if (empty($token)) {
return false;
}
$query = array(
'id' => $this->vid,
'secretkey' => $this->key,
'scene' => $scene,
'token' => $token,
'ip' => $this->getClientIp(),
);
$response = $this->_post($this->validata_url, $query);
return $response;
}
private function offlineValidate($token)
{
$strs = explode('-', $token);
if (count($strs) < 2) {
return false;
} else {
$time = (int) $strs[count($strs) - 1];
$storageTIme = $this->get($token);
$now = $this->getCurrentTime();
if ($now - $time > 600000) {
return false;
} else {
if ($storageTIme && $storageTIme == $time) {
return true;
} else {
return false;
}
}
}
}
public function getChannelData()
{
//前端mode: offline时 请求地址：
$url = $this->offline_url . 'offline';//正式模式使用替换这行代码$url = $this->offline_url . $this->vid;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$res = curl_exec($ch);
curl_close($ch);
$data = json_decode($res, true);
return $data;
}
//离线验证
public function offline($data, $callback, $v = null, $knock = null)
{
if (!$data) {
return array("error" => "params error");
}
switch ($data) {
case 'get':
return $this->getOfflineCaptcha($callback);
case 'verify':
if ($v == null) {
return array("error" => "params error");
} else {
return $this->offlineCheck($callback, $v, $knock);
}
default:
return array("error" => "parms error");
}
}
//离线获取图片资源
private function getOfflineCaptcha($callback)
{
$time = $this->getCurrentTime();
$md5 = md5($time . $this->key);
$captcha = substr($md5, 0, 3);
$data = $this->getChannelData();
$knock = md5($captcha . $time);
$ul = $this->getImgUrl();
$url = md5($data['offline_key'] . $ul);
// $this->$imgid = $url;
$this->set($knock, $url);
return $callback === null ? array(
"time" => $time,
"url" => $url,
) : $callback . '(' . json_encode(array(
"time" => $time,
"imgid" => $url,
"code" => '0103',
"knock" => $knock,
"msg" => "",
)) . ')';
}
//离线手势检测
private function offlineCheck($callback, $v, $knock)
{
$data = $this->getChannelData();
$offline_key = $data['offline_key'];
$imgs = $this->get($knock);
$this->delete($knock);
$address = md5($v . $imgs);
$url = $this->offline_imgurl . $offline_key . '/' . $address;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$res = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($httpCode == 200) {
$token = 'offline-' . $knock . '-' . $this->create_uuid() . '-' . $this->getCurrentTime();
$this->set($token, $this->getCurrentTime());
return $callback . '(' . json_encode(array(
"code" => '0103',
"msg" => "",
"token" => $token,
)) . ')';
} else {
return $callback . '(' . json_encode(array(
"code" => '0104',
"msg" => "0104",
"token" => "",
"v" => $v,
)) . ')';
}
}
private function _post($url, $data)
{
if (function_exists('curl_exec')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/x-www-form-urlencoded']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
$errno = curl_errno($ch);
$response = curl_exec($ch);
curl_close($ch);
return $errno > 0 ? 'error' : $response;
} else {
$opts = array(
'http' => array(
'method' => 'POST',
'header' => "Content-type: application/x-www-form-urlencoded\r\n" . "Content-Length: " . strlen($data) . "\r\n",
'content' => $data,
'timeout' => 5 * 1000,
),
'content' => $data,
);
$context = stream_context_create($opts);
$response = @file_get_contents($url, false, $context);
return $response ? $response : 'error';
}
}
private function getCurrentTime()
{
return number_format(floor(microtime(true)), 0, '', '');
}
private function getImgUrl()
{
$str = '0123456789abcdef';
$data = '';
for ($i = 0; $i < 4; $i++) {
# code...
$data = $data . $str[rand(0, 15)];
}
return $data;
}
public function set($key, $value, $expire = 600)
{
Cache::set('vaptcha_' . $key, ['value' => $value, 'create' => time(), 'readcount' => 0, 'expire' => $expire], 3600);
/*return $_SESSION[$key] = array(
'value' => $value,
'create' => time(),
'readcount' => 0,
'expire' => $expire,
);*/
}
public function get($key, $default = null)
{
//$data = $_SESSION[$key];
$data = Cache::get('vaptcha_' . $key);
$now = time();
if (!$data) {
return $default;
} else if ($now - $data['create'] > $data['expire']) {
return $default;
} else {
//$_SESSION[$key]['readcount']++;
$data['readcount']++;
return $data['value'];
}
}
public function delete($key)
{
Cache::rm('vaptcha_' . $key);
//unset($_SESSION[$key]);
}
public function create_uuid($prefix = "")
{
$str = md5(uniqid(mt_rand(), true));
$uuid = substr($str, 0, 8) . '-';
$uuid .= substr($str, 8, 4) . '-';
$uuid .= substr($str, 12, 4) . '-';
$uuid .= substr($str, 16, 4) . '-';
$uuid .= substr($str, 20, 12);
return $prefix . $uuid;
}
public function getClientIp()
{
if (getenv('HTTP_X_REAL_IP')) {
$ip = getenv('HTTP_X_REAL_IP');
} elseif (getenv('HTTP_X_FORWARDED_FOR')) {
$ip = getenv('HTTP_X_FORWARDED_FOR');
$ips = explode(',', $ip);
$ip = $ips[0];
} elseif (getenv('REMOTE_ADDR')) {
$ip = getenv('REMOTE_ADDR');
} else {
$ip = '0.0.0.0';
}
return $ip;
}
}