<?php /* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ /** *签名处理 */ class SignUtil { /** * 构建待签名 */ public static function Sign($path, $method, $secret, &$headers, $querys, $bodys, $signHeaderPrefixList) { $signStr = self::BuildStringToSign($path, $method, $headers, $querys, $bodys, $signHeaderPrefixList); return base64_encode(hash_hmac('sha256', $signStr, $secret, true)); } /** * 构建待签名path+(header+query+body) */ private static function BuildStringToSign($path, $method, &$headers, $querys, $bodys, $signHeaderPrefixList) { $sb = ""; $sb.= strtoupper($method); $sb.= Constants::LF; if (array_key_exists(HttpHeader::HTTP_HEADER_ACCEPT, $headers) && null != $headers[HttpHeader::HTTP_HEADER_ACCEPT]) { $sb.= $headers[HttpHeader::HTTP_HEADER_ACCEPT]; } $sb.= Constants::LF; if (array_key_exists(HttpHeader::HTTP_HEADER_CONTENT_MD5, $headers) && null != $headers[HttpHeader::HTTP_HEADER_ACCEPT]) { $sb.= $headers[HttpHeader::HTTP_HEADER_CONTENT_MD5]; } $sb.= Constants::LF; if (array_key_exists(HttpHeader::HTTP_HEADER_CONTENT_TYPE, $headers) && null != $headers[HttpHeader::HTTP_HEADER_ACCEPT]) { $sb.= $headers[HttpHeader::HTTP_HEADER_CONTENT_TYPE]; } $sb.= Constants::LF; if (array_key_exists(HttpHeader::HTTP_HEADER_DATE, $headers) && null != $headers[HttpHeader::HTTP_HEADER_ACCEPT]) { $sb.= $headers[HttpHeader::HTTP_HEADER_DATE]; } $sb.= Constants::LF; $sb.= self::BuildHeaders($headers, $signHeaderPrefixList); $sb.= self::BuildResource($path, $querys, $bodys); return $sb; } /** * 构建待签名Path+Query+FormParams */ private static function BuildResource($path, $querys, $bodys) { $sb = ""; if (0 < strlen($path)) { $sb.=$path; } $sbParam = ""; $sortParams = array(); //query参与签名 if (is_array($querys)) { foreach ($querys as $itemKey => $itemValue) { if (0 < strlen($itemKey)) { $sortParams[$itemKey] = $itemValue; } } } //body参与签名 if (is_array($bodys)) { foreach ($bodys as $itemKey => $itemValue) { if (0 < strlen($itemKey)) { $sortParams[$itemKey] = $itemValue; } } } //排序 ksort($sortParams); //参数Key foreach ($sortParams as $itemKey => $itemValue) { if (0 < strlen($itemKey)) { if (0 < strlen($sbParam)) { $sbParam.="&"; } $sbParam.=$itemKey; if (null != $itemValue) { if (0 < strlen($itemValue)) { $sbParam.="="; $sbParam.=$itemValue; } } } } if (0 < strlen($sbParam)) { $sb.="?"; $sb.=$sbParam; } return $sb; } /** * 构建待签名Http头 * * @param headers 请求中所有的Http头 * @param signHeaderPrefixList 自定义参与签名Header前缀 * @return 待签名Http头 */ private static function BuildHeaders(&$headers, $signHeaderPrefixList) { $sb = ""; if (null != $signHeaderPrefixList) { //剔除X-Ca-Signature/X-Ca-Signature-Headers/Accept/Content-MD5/Content-Type/Date unset($signHeaderPrefixList[SystemHeader::X_CA_SIGNATURE]); unset($signHeaderPrefixList[HttpHeader::HTTP_HEADER_ACCEPT]); unset($signHeaderPrefixList[HttpHeader::HTTP_HEADER_CONTENT_MD5]); unset($signHeaderPrefixList[HttpHeader::HTTP_HEADER_CONTENT_TYPE]); unset($signHeaderPrefixList[HttpHeader::HTTP_HEADER_DATE]); ksort($signHeaderPrefixList); if (is_array($headers)) { ksort($headers); $signHeadersStringBuilder = ""; foreach ($headers as $itemKey => $itemValue) { if (self::IsHeaderToSign($itemKey, $signHeaderPrefixList)) { $sb.=$itemKey; $sb.=Constants::SPE2; if (0 < strlen($itemValue)) { $sb.=$itemValue; } $sb.=Constants::LF; if (0 < strlen($signHeadersStringBuilder)) { $signHeadersStringBuilder.= Constants::SPE1; } $signHeadersStringBuilder.= $itemKey; } } $headers[SystemHeader::X_CA_SIGNATURE_HEADERS] = $signHeadersStringBuilder; } } return $sb; } /** * Http头是否参与签名 * return */ private static function IsHeaderToSign($headerName, $signHeaderPrefixList) { if (NULL == $headerName) { return false; } if (0 == strlen($headerName)) { return false; } if (1 == strpos("$".$headerName, Constants::CA_HEADER_TO_SIGN_PREFIX_SYSTEM)) { return true; } if (!is_array($signHeaderPrefixList) || empty($signHeaderPrefixList) ) { return false; } if (array_key_exists($headerName, $signHeaderPrefixList)) { return true; } return false; } }