154 lines
4.9 KiB
PHP
Executable File
154 lines
4.9 KiB
PHP
Executable File
<?php
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/*
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* 类名：AlipayNotify
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* 功能：支付宝通知处理类
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* 详细：处理支付宝各接口通知返回
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*/
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class AlipayNotify {
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// HTTPS形式消息验证地址
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var $https_verify_url = 'https://mapi.alipay.com/gateway.do?service=notify_verify&';
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// HTTP形式消息验证地址
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var $http_verify_url = 'http://notify.alipay.com/trade/notify_query.do?';
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var $alipay_config;
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function __construct($alipay_config) {
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$this->alipay_config = $alipay_config;
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}
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function AlipayNotify($alipay_config) {
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$this->__construct ( $alipay_config );
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}
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/**
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* 针对notify_url验证消息是否是支付宝发出的合法消息
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* @return 验证结果
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*/
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function verifyNotify() {
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if (empty ( $_POST )) { // 判断POST来的数组是否为空
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return false;
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} else {
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// 对notify_data解密
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$decrypt_post_para = $_POST;
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if ($this->alipay_config ['sign_type'] == '0001') {
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$decrypt_post_para ['notify_data'] = rsaDecrypt ( $decrypt_post_para ['notify_data'], $this->alipay_config ['private_key_path'] );
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}
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// notify_id从decrypt_post_para中解析出来（也就是说decrypt_post_para中已经包含notify_id的内容）
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$doc = new \DOMDocument ();
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$doc->loadXML ( $decrypt_post_para ['notify_data'] );
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$notify_id = $doc->getElementsByTagName ( "notify_id" )->item ( 0 )->nodeValue;
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// 获取支付宝远程服务器ATN结果（验证是否是支付宝发来的消息）
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$responseTxt = 'true';
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if (! empty ( $notify_id )) {
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$responseTxt = $this->getResponse ( $notify_id );
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}
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// 生成签名结果
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$isSign = $this->getSignVeryfy ( $decrypt_post_para, $_POST ["sign"], false );
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if (preg_match ( "/true$/i", $responseTxt ) && $isSign) {
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return true;
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} else {
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return false;
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}
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}
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}
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/**
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* 针对return_url验证消息是否是支付宝发出的合法消息
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* @return 验证结果
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*/
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function verifyReturn() {
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if (empty ( $_GET )) { // 判断GET来的数组是否为空
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return false;
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} else {
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// 生成签名结果
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$isSign = $this->getSignVeryfy ( $_GET, $_GET ["sign"], true );
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if ($isSign) {
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return true;
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} else {
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return false;
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}
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}
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}
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/**
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* 解密
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* @param $input_para 要解密数据
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* @return 解密后结果
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*/
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function decrypt($prestr) {
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return rsaDecrypt ( $prestr, trim ( $this->alipay_config ['private_key_path'] ) );
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}
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/**
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* 异步通知时，对参数做固定排序
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* @param $para 排序前的参数组
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* @return 排序后的参数组
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*/
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function sortNotifyPara($para) {
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$para_sort ['service'] = $para ['service'];
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$para_sort ['v'] = $para ['v'];
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$para_sort ['sec_id'] = $para ['sec_id'];
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$para_sort ['notify_data'] = $para ['notify_data'];
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return $para_sort;
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}
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/**
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* 获取返回时的签名验证结果
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* @param $para_temp 通知返回来的参数数组
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* @param $sign 返回的签名结果
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* @param $isSort 是否对待签名数组排序
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* @return 签名验证结果
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*/
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function getSignVeryfy($para_temp, $sign, $isSort) {
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// 除去待签名参数数组中的空值和签名参数
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$para = paraFilter ( $para_temp );
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// 对待签名参数数组排序
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if ($isSort) {
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$para = argSort ( $para );
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} else {
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$para = $this->sortNotifyPara ( $para );
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}
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// 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
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$prestr = createLinkstring ( $para );
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$isSgin = false;
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switch (strtoupper ( trim ( $this->alipay_config ['sign_type'] ) )) {
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case "MD5" :
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$isSgin = md5Verify ( $prestr, $sign, $this->alipay_config ['key'] );
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break;
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case "RSA" :
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$isSgin = rsaVerify ( $prestr, trim ( $this->alipay_config ['ali_public_key_path'] ), $sign );
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break;
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case "0001" :
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$isSgin = rsaVerify ( $prestr, trim ( $this->alipay_config ['ali_public_key_path'] ), $sign );
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break;
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default :
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$isSgin = false;
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}
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return $isSgin;
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}
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/**
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* 获取远程服务器ATN结果,验证返回URL
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* @param $notify_id 通知校验ID
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* @return 服务器ATN结果 验证结果集：
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* invalid命令参数不对 出现这个错误，请检测返回处理中partner和key是否为空
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* true 返回正确信息
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* false 请检查防火墙或者是服务器阻止端口问题以及验证时间是否超过一分钟
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*/
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function getResponse($notify_id) {
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$transport = strtolower ( trim ( $this->alipay_config ['transport'] ) );
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$partner = trim ( $this->alipay_config ['partner'] );
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$veryfy_url = '';
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if ($transport == 'https') {
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$veryfy_url = $this->https_verify_url;
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} else {
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$veryfy_url = $this->http_verify_url;
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}
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$veryfy_url = $veryfy_url . "partner=" . $partner . "¬ify_id=" . $notify_id;
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$responseTxt = getHttpResponseGET ( $veryfy_url, $this->alipay_config ['cacert'] );
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return $responseTxt;
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}
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}
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?>
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