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139 lines
3.8 KiB
139 lines
3.8 KiB
<?php
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/**
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* Copyright 2019 Huawei Technologies Co.,Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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* this file except in compliance with the License. You may obtain a copy of the
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* License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed
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* under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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* CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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*/
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namespace Obs\Internal\Signature;
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use Obs\Internal\Resource\Constants;
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use Obs\Internal\Common\Model;
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use Obs\Internal\Resource\V2Constants;
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class DefaultSignature extends AbstractSignature
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{
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const INTEREST_HEADER_KEY_LIST = array('content-type', 'content-md5', 'date');
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public function __construct($ak, $sk, $pathStyle, $endpoint, $methodName, $signature, $securityToken=false, $isCname=false)
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{
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parent::__construct($ak, $sk, $pathStyle, $endpoint, $methodName, $signature, $securityToken, $isCname);
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}
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public function doAuth(array &$requestConfig, array &$params, Model $model)
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{
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$result = $this -> prepareAuth($requestConfig, $params, $model);
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$result['headers']['Date'] = gmdate('D, d M Y H:i:s \G\M\T');
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$canonicalstring = $this-> makeCanonicalstring($result['method'], $result['headers'], $result['pathArgs'], $result['dnsParam'], $result['uriParam']);
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$result['cannonicalRequest'] = $canonicalstring;
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$signature = base64_encode(hash_hmac('sha1', $canonicalstring, $this->sk, true));
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$constants = Constants::selectConstants($this -> signature);
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$signatureFlag = $constants::FLAG;
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$authorization = $signatureFlag . ' ' . $this->ak . ':' . $signature;
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$result['headers']['Authorization'] = $authorization;
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return $result;
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}
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public function makeCanonicalstring($method, $headers, $pathArgs, $bucketName, $objectKey, $expires = null)
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{
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$buffer = [];
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$buffer[] = $method;
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$buffer[] = "\n";
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$interestHeaders = [];
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$constants = Constants::selectConstants($this -> signature);
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foreach ($headers as $key => $value){
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$key = strtolower($key);
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if(in_array($key, self::INTEREST_HEADER_KEY_LIST) || strpos($key, $constants::HEADER_PREFIX) === 0){
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$interestHeaders[$key] = $value;
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}
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}
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if(array_key_exists($constants::ALTERNATIVE_DATE_HEADER, $interestHeaders)){
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$interestHeaders['date'] = '';
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}
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if($expires !== null){
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$interestHeaders['date'] = strval($expires);
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}
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if(!array_key_exists('content-type', $interestHeaders)){
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$interestHeaders['content-type'] = '';
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}
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if(!array_key_exists('content-md5', $interestHeaders)){
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$interestHeaders['content-md5'] = '';
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}
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ksort($interestHeaders);
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foreach ($interestHeaders as $key => $value){
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if(strpos($key, $constants::HEADER_PREFIX) === 0){
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$buffer[] = $key . ':' . $value;
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}else{
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$buffer[] = $value;
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}
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$buffer[] = "\n";
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}
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$uri = '';
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$bucketName = $this->isCname ? $headers['Host'] : $bucketName;
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if($bucketName){
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$uri .= '/';
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$uri .= $bucketName;
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if(!$this->pathStyle){
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$uri .= '/';
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}
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}
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if($objectKey){
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if(!($pos=strripos($uri, '/')) || strlen($uri)-1 !== $pos){
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$uri .= '/';
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}
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$uri .= $objectKey;
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}
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$buffer[] = $uri === ''? '/' : $uri;
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if(!empty($pathArgs)){
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ksort($pathArgs);
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$_pathArgs = [];
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foreach ($pathArgs as $key => $value){
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if(in_array(strtolower($key), $constants::ALLOWED_RESOURCE_PARAMTER_NAMES) || strpos($key, $constants::HEADER_PREFIX) === 0){
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$_pathArgs[] = $value === null || $value === '' ? $key : $key . '=' . urldecode($value);
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}
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}
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if(!empty($_pathArgs)){
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$buffer[] = '?';
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$buffer[] = implode('&', $_pathArgs);
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}
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}
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return implode('', $buffer);
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}
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}
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