File Source for SharedKey.php

<?php
/**
* Copyright (c) 2009 - 2011, RealDolmen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of RealDolmen nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RealDolmen ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL RealDolmen BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @category Microsoft
* @package Microsoft_WindowsAzure
* @copyright Copyright (c) 2009 - 2011, RealDolmen (http://www.realdolmen.com)
* @license http://phpazure.codeplex.com/license
* @version $Id$
*/
/**
* @see Microsoft_AutoLoader
*/
require_once dirname(__FILE__) . '/../../AutoLoader.php';
/**
* @category Microsoft
* @package Microsoft_WindowsAzure
* @copyright Copyright (c) 2009 - 2011, RealDolmen (http://www.realdolmen.com)
* @license http://phpazure.codeplex.com/license
*/
class Microsoft_WindowsAzure_Credentials_SharedKey
extends Microsoft_WindowsAzure_Credentials_CredentialsAbstract
{
/**
* Sign request URL with credentials
*
* @param string $requestUrl Request URL
* @param string $resourceType Resource type
* @param string $requiredPermission Required permission
* @return string Signed request URL
*/
public function signRequestUrl(
$requestUrl = '',
$resourceType = Microsoft_WindowsAzure_Storage::RESOURCE_UNKNOWN,
$requiredPermission = Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PERMISSION_READ
) {
return $requestUrl;
}
/**
* Sign request headers with credentials
*
* @param string $httpVerb HTTP verb the request will use
* @param string $path Path for the request
* @param array $query Query arguments for the request (key/value pairs)
* @param array $headers x-ms headers to add
* @param boolean $forTableStorage Is the request for table storage?
* @param string $resourceType Resource type
* @param string $requiredPermission Required permission
* @param mixed $rawData Raw post data
* @return array Array of headers
*/
public function signRequestHeaders(
$httpVerb = Microsoft_Http_Client::GET,
$path = '/',
$query = array(),
$headers = null,
$forTableStorage = false,
$resourceType = Microsoft_WindowsAzure_Storage::RESOURCE_UNKNOWN,
$requiredPermission = Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PERMISSION_READ,
$rawData = null
) {
// http://github.com/sriramk/winazurestorage/blob/214010a2f8931bac9c96dfeb337d56fe084ca63b/winazurestorage.py
// Table storage?
if ($forTableStorage) {
throw new Microsoft_WindowsAzure_Credentials_Exception('The Windows Azure SDK for PHP does not support SharedKey authentication on table storage. Use SharedKeyLite authentication instead.');
}
// Determine path
if ($this->_usePathStyleUri) {
$path = substr($path, strpos($path, '/'));
}
// Canonicalized headers
$canonicalizedHeaders = array();
// Request date
$requestDate = '';
if (isset($headers[Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PREFIX_STORAGE_HEADER . 'date'])) {
$requestDate = $headers[Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PREFIX_STORAGE_HEADER . 'date'];
} else {
$requestDate = gmdate('D, d M Y H:i:s', time()) . ' GMT'; // RFC 1123
$canonicalizedHeaders[] = Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PREFIX_STORAGE_HEADER . 'date:' . $requestDate;
}
// Build canonicalized headers
if (!is_null($headers)) {
foreach ($headers as $header => $value) {
if (is_bool($value)) {
$value = $value === true ? 'True' : 'False';
}
$headers[$header] = $value;
if (substr($header, 0, strlen(Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PREFIX_STORAGE_HEADER)) == Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PREFIX_STORAGE_HEADER) {
$canonicalizedHeaders[] = strtolower($header) . ':' . $value;
}
}
}
sort($canonicalizedHeaders);
// Build canonicalized resource string
$canonicalizedResource = '/' . $this->_accountName;
if ($this->_usePathStyleUri) {
$canonicalizedResource .= '/' . $this->_accountName;
}
$canonicalizedResource .= $path;
if (count($query) > 0) {
ksort($query);
foreach ($query as $key => $value) {
$canonicalizedResource .= "\n" . strtolower($key) . ':' . rawurldecode($value);
}
}
// Content-Length header
$contentLength = '';
if (strtoupper($httpVerb) != Microsoft_Http_Client::GET
&& strtoupper($httpVerb) != Microsoft_Http_Client::DELETE
&& strtoupper($httpVerb) != Microsoft_Http_Client::HEAD) {
$contentLength = 0;
if (!is_null($rawData)) {
$contentLength = strlen($rawData);
}
}
// Create string to sign
$stringToSign = array();
$stringToSign[] = strtoupper($httpVerb); // VERB
$stringToSign[] = $this->_issetOr($headers, 'Content-Encoding', ''); // Content-Encoding
$stringToSign[] = $this->_issetOr($headers, 'Content-Language', ''); // Content-Language
$stringToSign[] = $contentLength; // Content-Length
$stringToSign[] = $this->_issetOr($headers, 'Content-MD5', ''); // Content-MD5
$stringToSign[] = $this->_issetOr($headers, 'Content-Type', ''); // Content-Type
$stringToSign[] = ""; // Date
$stringToSign[] = $this->_issetOr($headers, 'If-Modified-Since', ''); // If-Modified-Since
$stringToSign[] = $this->_issetOr($headers, 'If-Match', ''); // If-Match
$stringToSign[] = $this->_issetOr($headers, 'If-None-Match', ''); // If-None-Match
$stringToSign[] = $this->_issetOr($headers, 'If-Unmodified-Since', ''); // If-Unmodified-Since
$stringToSign[] = $this->_issetOr($headers, 'Range', ''); // Range
if (!$forTableStorage && count($canonicalizedHeaders) > 0) {
$stringToSign[] = implode("\n", $canonicalizedHeaders); // Canonicalized headers
}
$stringToSign[] = $canonicalizedResource; // Canonicalized resource
$stringToSign = implode("\n", $stringToSign);
$signString = base64_encode(hash_hmac('sha256', $stringToSign, $this->_accountKey, true));
// Sign request
$headers[Microsoft_WindowsAzure_Credentials_CredentialsAbstract::PREFIX_STORAGE_HEADER . 'date'] = $requestDate;
$headers['Authorization'] = 'SharedKey ' . $this->_accountName . ':' . $signString;
// Return headers
return $headers;
}
}

Source for file SharedKey.php