<?PHP
namespace common\services;
class UnionPay
{
/**
* 支付配置
* @var array
*/
public $config = [];
/**
* 支付参数,提交到银联对应接口的所有参数
* @var array
*/
public $params = [];
/**
* 自动提交表单模板
* @var string
*/
private $formTemplate = <<<'HTML'
<!DOCTYPE HTML>
<html>
<head>
<Meta charset="utf-8">
<title>支付</title>
</head>
<body>
<div style="text-align:center">跳转中...</div>
<form id="pay_form" name="pay_form" action="%s" method="post">
%s
</form>
<script type="text/javascript">
document.onreadystatechange = function(){
if(document.readyState == "complete") {
document.pay_form.submit();
}
};
</script>
</body>
</html>
HTML;
/**
* 构建自动提交HTML表单
* @return string
*/
public function createPostForm()
{
$this->params['signature'] = $this->sign();
$input = '';
foreach($this->params as $key => $item) {
$input .= "\t\t<input type=\"hidden\" name=\"{$key}\" value=\"{$item}\">\n";
}
return sprintf($this->formTemplate,$this->config['frontUrl'],$input);
}
/**
* 验证签名
* 验签规则：
* 除signature域之外的所有项目都必须参加验签
* 根据key值按照字典排序,然后用&拼接key=value形式待验签字符串；
* 然后对待验签字符串使用sha1算法做摘要；
* 用银联公钥对摘要和签名信息做验签操作
*
* @throws \Exception
* @return bool
*/
public function verifySign()
{
$publicKey = $this->getVerifyPublicKey();
$verifyArr = $this->filterBeforSign();
ksort($verifyArr);
$verifyStr = $this->arrayToString($verifyArr);
$verifySha1 = sha1($verifyStr);
$signature = base64_decode($this->params['signature']);
$result = openssl_verify($verifySha1,$signature,$publicKey);
if($result === -1) {
throw new \Exception('Verify Error:'.openssl_error_string());
}
return $result === 1 ? true : false;
}
/**
* 取签名证书ID(SN)
* @return string
*/
public function getSignCertId()
{
return $this->getCertIdPfx($this->config['signCertPath']);
}
/**
* 签名数据
* 签名规则:
* 除signature域之外的所有项目都必须参加签名
* 根据key值按照字典排序,然后用&拼接key=value形式待签名字符串；
* 然后对待签名字符串使用sha1算法做摘要；
* 用银联颁发的私钥对摘要做RSA签名操作
* 签名结果用base64编码后放在signature域
*
* @throws \InvalidArgumentException
* @return multitype|string
*/
private function sign() {
$signData = $this->filterBeforSign();
ksort($signData);
$signQueryString = $this->arrayToString($signData);
if($this->params['signMethod'] == 01) {
//签名之前先用sha1处理
//echo $signQueryString;exit;
$datasha1 = sha1($signQueryString);
$signed = $this->rsaSign($datasha1);
} else {
throw new \InvalidArgumentException('Nonsupport Sign Method');
}
return $signed;
}
/**
* 数组转换成字符串
* @param array $arr
* @return string
*/
private function arrayToString($arr)
{
$str = '';
foreach($arr as $key => $value) {
$str .= $key.'='.$value.'&';
}
return substr($str,strlen($str) - 1);
}
/**
* 过滤待签名数据
* signature域不参加签名
*
* @return array
*/
private function filterBeforSign()
{
$tmp = $this->params;
unset($tmp['signature']);
return $tmp;
}
/**
* RSA签名数据,并base64编码
* @param string $data 待签名数据
* @return mixed
*/
private function rsaSign($data)
{
$privatekey = $this->getSignPrivateKey();
$result = openssl_sign($data,$privatekey);
if($result) {
return base64_encode($signature);
}
return false;
}
/**
* 取.pfx格式证书ID(SN)
* @return string
*/
private function getCertIdPfx($path)
{
$pkcs12certdata = file_get_contents($path);
openssl_pkcs12_read($pkcs12certdata,$certs,$this->config['signCertPwd']);
$x509data = $certs['cert'];
openssl_x509_read($x509data);
$certdata = openssl_x509_parse($x509data);
return $certdata['serialNumber'];
}
/**
* 取.cer格式证书ID(SN)
* @return string
*/
private function getCertIdCer($path)
{
$x509data = file_get_contents($path);
openssl_x509_read($x509data);
$certdata = openssl_x509_parse($x509data);
return $certdata['serialNumber'];
}
/**
* 取签名证书私钥
* @return resource
*/
private function getSignPrivateKey()
{
$pkcs12 = file_get_contents($this->config['signCertPath']);
openssl_pkcs12_read($pkcs12,$this->config['signCertPwd']);
return $certs['pkey'];
}
/**
* 取验证签名证书
* @throws \InvalidArgumentException
* @return string
*/
private function getVerifyPublicKey()
{
//先判断配置的验签证书是否银联返回指定的证书是否一致
if($this->getCertIdCer($this->config['verifyCertPath']) != $this->params['certId']) {
throw new \InvalidArgumentException('Verify sign cert is incorrect');
}
return file_get_contents($this->config['verifyCertPath']);
}
}
2. 配置示例
3. 支付示例
4. 异步通知示例
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