91 lines
2.3 KiB
PHP
91 lines
2.3 KiB
PHP
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<?php
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/**
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* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License").
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* You may not use this file except in compliance with the License.
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* A copy of the License is located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed
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* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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namespace Aws\Common\Signature;
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use Guzzle\Http\Message\RequestInterface;
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/**
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* Abstract signature class that can be used when implementing new concrete
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* AWS signature protocol strategies
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*/
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abstract class AbstractSignature implements SignatureInterface
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{
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/**
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* @var int Timestamp
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*/
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private $timestamp;
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/**
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* Get the canonicalized query string for a request
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*
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* @param RequestInterface $request
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* @return string
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*/
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protected function getCanonicalizedQueryString(RequestInterface $request)
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{
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$queryParams = $request->getQuery()->getAll();
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unset($queryParams['X-Amz-Signature']);
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if (empty($queryParams)) {
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return '';
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}
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$qs = '';
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ksort($queryParams);
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foreach ($queryParams as $key => $values) {
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if (is_array($values)) {
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sort($values);
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} elseif (!$values) {
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$values = array('');
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}
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foreach ((array) $values as $value) {
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$qs .= rawurlencode($key) . '=' . rawurlencode($value) . '&';
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}
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}
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return substr($qs, 0, -1);
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}
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/**
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* Provides the timestamp used for the class
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*
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* @param bool $refresh Set to TRUE to refresh the cached timestamp
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*
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* @return int
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*/
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protected function getTimestamp($refresh = false)
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{
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if (!$this->timestamp || $refresh) {
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$this->timestamp = time();
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}
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return $this->timestamp;
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}
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/**
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* Get a date for one of the parts of the requests
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*
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* @param string $format Date format
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*
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* @return string
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*/
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protected function getDateTime($format)
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{
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return gmdate($format, $this->getTimestamp());
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}
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}
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