as2252258@163.com
140 lines
3.0 KiB
PHP
140 lines
3.0 KiB
PHP
<?php
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namespace wchat;
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class Help extends Miniprogarampage
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{
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public static $OK = 0;
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public static $IllegalAesKey = -41001;
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public static $IllegalIv = -41002;
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public static $IllegalBuffer = -41003;
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public static $DecodeBase64Error = -41004;
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/**
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* @param $encryptedData
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* @param $iv
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* @param $sessionKey
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* @return object
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* @throws
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*
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* * <li>-41001: encodingAesKey 非法</li>
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* <li>-41003: aes 解密失败</li>
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* <li>-41004: 解密后得到的buffer非法</li>
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* <li>-41005: base64加密失败</li>
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* <li>-41016: base64解密失败</li>
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*/
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public static function decode($encryptedData, $iv, $sessionKey)
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{
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$config = Wx::getMiniProGaRamPage()->getConfig();
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if (strlen($sessionKey) != 24) {
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throw new \Exception('encodingAesKey 非法', self::$IllegalAesKey);
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}
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$aesKey = base64_decode($sessionKey);
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if (strlen($iv) != 24) {
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throw new \Exception('base64解密失败', self::$IllegalIv);
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}
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$aesIV = base64_decode($iv);
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$aesCipher = base64_decode($encryptedData);
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$result = openssl_decrypt($aesCipher, "AES-128-CBC", $aesKey, OPENSSL_RAW_DATA, $aesIV);
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if ($result === false) {
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throw new \Exception('aes 解密失败', self::$IllegalBuffer);
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}
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$dataObj = json_decode($result);
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if ($dataObj->watermark->appid != $config->getAppid()) {
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throw new \Exception('aes 解密失败', self::$IllegalBuffer);
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}
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return $dataObj;
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}
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/**
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* @param array $data
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* @return string
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*/
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public static function toXml(array $data)
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{
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$xml = "<xml>";
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foreach ($data as $key => $val) {
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if (is_numeric($val)) {
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$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
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} else {
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$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
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}
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}
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$xml .= "</xml>";
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return $xml;
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}
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/**
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* @param $xml
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* @return mixed
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*/
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public static function toArray($xml)
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{
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if (!is_null($json = json_decode($xml, TRUE))) {
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return $json;
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}
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if (is_array($json)) {
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return $json;
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}
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$data = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
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return json_decode(json_encode($data), TRUE);
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}
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/**
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* @param int $length
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* @return string
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*
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* 随机字符串
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*/
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public static function random($length = 20)
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{
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$res = [];
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$str = 'abcdefghijklmnopqrstuvwxyz';
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$str .= strtoupper($str) . '1234567890';
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for ($i = 0; $i < $length; $i++) {
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$rand = substr($str, rand(0, strlen($str) - 2), 1);
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if (empty($rand)) {
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$rand = substr($str, strlen($str) - 3, 1);
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}
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array_push($res, $rand);
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}
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return implode($res);
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}
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/**
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* @param array $array
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* @param $key
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* @param $type
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* @return string
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*/
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public static function sign(array $array, $key, $type)
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{
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ksort($array, SORT_STRING);
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$string = '';
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foreach ($array as $key => $val) {
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if (empty($string)) {
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$string = $key . '=' . $val;
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} else {
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$string .= '&' . $key . '=' . $val;
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}
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}
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$string .= '&key=' . $key;
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if ($type == 'MD5') {
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return strtoupper(md5($string));
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} else {
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return hash('sha256', $string);
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}
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}
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}
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