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<?php |
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namespace Nilnice\Payment\Wechat\Traits; |
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use Illuminate\Support\Arr; |
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use Illuminate\Support\Str; |
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use Nilnice\Payment\Constant; |
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use Nilnice\Payment\Exception\InvalidKeyException; |
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trait SecurityTrait |
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{ |
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/** |
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* Generate signature. |
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* |
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* @param array $array |
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* @param null $key |
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* |
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* @return string |
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* @throws \Nilnice\Payment\Exception\InvalidKeyException |
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*/ |
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public static function generateSign(array $array, $key = null) : string |
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{ |
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if ($key === null) { |
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throw new InvalidKeyException( |
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'Invalid Wechat [key] configuration.', |
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Constant::WX_PAY_KEY_INVALID |
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); |
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} |
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ksort($array); |
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$string = md5(self::getSignContent($array) . '&key=' . $key); |
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$string = strtoupper($string); |
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return $string; |
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} |
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/** |
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* Get signature content. |
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* |
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* @param array $array |
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* |
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* @return string |
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*/ |
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public static function getSignContent(array $array) : string |
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{ |
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$string = ''; |
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foreach ($array as $key => $val) { |
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if ($key !== 'sign' && $val !== '' && ! \is_array($val)) { |
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$string .= $key . '=' . $val; |
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} |
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} |
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return rtrim($string, '&'); |
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} |
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/** |
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* Verify signature. |
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* |
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* @param array $array |
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* @param string|null $key |
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* @param bool $isSync |
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* @param string|null $sign |
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* |
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* @return bool |
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* @throws \Nilnice\Payment\Exception\InvalidKeyException |
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*/ |
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public static function verifySign( |
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array $array, |
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$key = null, |
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$isSync = false, |
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$sign = null |
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) : bool { |
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if ($key === null) { |
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throw new InvalidKeyException( |
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'Invalid Alipay [public key] configuration.', |
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Constant::ALI_PAY_PUBLIC_KEY_INVALID |
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); |
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} |
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if (Str::endsWith($key, '.pem')) { |
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$key = openssl_pkey_get_public($key); |
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} else { |
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$key = self::getKey($key); |
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} |
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$sign = $sign ?? Arr::get($array, 'sign'); |
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$data = $isSync |
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? mb_convert_encoding( |
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json_encode($array, JSON_UNESCAPED_UNICODE), |
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'GB2312', |
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'UTF-8' |
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) |
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: self::getSignContent($array, true); |
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$sign = base64_decode($sign); |
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$result = openssl_verify($data, $sign, $key, OPENSSL_ALGO_SHA256) === 1; |
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return $result === 1; |
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} |
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/** |
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* To encoding. |
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* |
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* @param array $array |
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* @param string $to |
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* @param string $from |
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* |
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* @return array |
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*/ |
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public static function toEncoding( |
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array $array, |
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$to = 'GB2312', |
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$from = 'UTF-8' |
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) : array { |
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$data = []; |
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foreach ($array as $key => $val) { |
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if (\is_array($val)) { |
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$data[$key] = self::toEncoding((array)$val, $to, $from); |
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} else { |
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$data[$key] = mb_convert_encoding($val, $to, $from); |
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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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* Get key. |
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* |
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* @param string $key |
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* @param bool $isPublicKey |
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* |
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* @return string |
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*/ |
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public static function getKey( |
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string $key, |
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bool $isPublicKey = true |
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) : string { |
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$char = $isPublicKey ? 'PUBLIC' : 'RSA PRIVATE'; |
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$format = "-----BEGIN %s KEY-----\n%s\n-----END %s KEY-----"; |
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$key = wordwrap($key, 64, PHP_EOL, true); |
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$string = sprintf($format, $char, $key, $char); |
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return $string; |
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} |
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} |
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nilnice /
payment
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