C:/xampp/htdocs/moodle/lib/zend/Zend/Service/WindowsAzure/Storage.php

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<?php
require_once 'Zend/Service/WindowsAzure/Credentials/CredentialsAbstract.php';

require_once 'Zend/Service/WindowsAzure/Credentials/SharedKey.php';

require_once 'Zend/Service/WindowsAzure/RetryPolicy/RetryPolicyAbstract.php';

require_once 'Zend/Service/WindowsAzure/Exception.php';

require_once 'Zend/Http/Client.php';

require_once 'Zend/Http/Response.php';

class Zend_Service_WindowsAzure_Storage
{
        const URL_DEV_BLOB      = "127.0.0.1:10000";
        const URL_DEV_QUEUE     = "127.0.0.1:10001";
        const URL_DEV_TABLE     = "127.0.0.1:10002";
        
        const URL_CLOUD_BLOB    = "blob.core.windows.net";
        const URL_CLOUD_QUEUE   = "queue.core.windows.net";
        const URL_CLOUD_TABLE   = "table.core.windows.net";
        
        const RESOURCE_UNKNOWN     = "unknown";
        const RESOURCE_CONTAINER   = "c";
        const RESOURCE_BLOB        = "b";
        const RESOURCE_TABLE       = "t";
        const RESOURCE_ENTITY      = "e";
        const RESOURCE_QUEUE       = "q";
        
        protected $_apiVersion = '2009-04-14';
        
        protected $_host = '';
        
        protected $_accountName = '';
        
        protected $_accountKey = '';
        
        protected $_usePathStyleUri = false;
        
        protected $_credentials = null;
        
        protected $_retryPolicy = null;
        
        protected $_httpClientChannel = null;
        
        protected $_useProxy = false;
        
        protected $_proxyUrl = '';
        
        protected $_proxyPort = 80;
        
        protected $_proxyCredentials = '';
        
        public function __construct(
                $host = self::URL_DEV_BLOB,
                $accountName = Zend_Service_WindowsAzure_Credentials_CredentialsAbstract::DEVSTORE_ACCOUNT,
                $accountKey = Zend_Service_WindowsAzure_Credentials_CredentialsAbstract::DEVSTORE_KEY,
                $usePathStyleUri = false,
                Zend_Service_WindowsAzure_RetryPolicy_RetryPolicyAbstract $retryPolicy = null
        ) {
                $this->_host = $host;
                $this->_accountName = $accountName;
                $this->_accountKey = $accountKey;
                $this->_usePathStyleUri = $usePathStyleUri;
                
                // Using local storage?
                if (!$this->_usePathStyleUri
                        && ($this->_host == self::URL_DEV_BLOB
                                || $this->_host == self::URL_DEV_QUEUE
                                || $this->_host == self::URL_DEV_TABLE)
                ) {
                        // Local storage
                        $this->_usePathStyleUri = true;
                }
                
                if (is_null($this->_credentials)) {
                    $this->_credentials = new Zend_Service_WindowsAzure_Credentials_SharedKey(
                        $this->_accountName, $this->_accountKey, $this->_usePathStyleUri);
                }
                
                $this->_retryPolicy = $retryPolicy;
                if (is_null($this->_retryPolicy)) {
                    $this->_retryPolicy = Zend_Service_WindowsAzure_RetryPolicy_RetryPolicyAbstract::noRetry();
                }
                
                // Setup default Zend_Http_Client channel
                $options = array(
                        'adapter' => 'Zend_Http_Client_Adapter_Proxy'
                );
                if (function_exists('curl_init')) {
                        // Set cURL options if cURL is used afterwards
                        $options['curloptions'] = array(
                                        CURLOPT_FOLLOWLOCATION => true,
                                        CURLOPT_TIMEOUT => 120,
                        );
                }
                $this->_httpClientChannel = new Zend_Http_Client(null, $options);
        }
        
        public function setHttpClientChannel($adapterInstance = 'Zend_Http_Client_Adapter_Proxy')
        {
                $this->_httpClientChannel->setAdapter($adapterInstance);
        }
        
        public function setRetryPolicy(Zend_Service_WindowsAzure_RetryPolicy_RetryPolicyAbstract $retryPolicy = null)
        {
                $this->_retryPolicy = $retryPolicy;
                if (is_null($this->_retryPolicy)) {
                    $this->_retryPolicy = Zend_Service_WindowsAzure_RetryPolicy_RetryPolicyAbstract::noRetry();
                }
        }
        
        public function setProxy($useProxy = false, $proxyUrl = '', $proxyPort = 80, $proxyCredentials = '')
        {
            $this->_useProxy         = $useProxy;
            $this->_proxyUrl         = $proxyUrl;
            $this->_proxyPort        = $proxyPort;
            $this->_proxyCredentials = $proxyCredentials;
            
            if ($this->_useProxy) {
                $credentials = explode(':', $this->_proxyCredentials);
                if(!isset($credentials[1])) {
                    $credentials[1] = '';
                }
                $this->_httpClientChannel->setConfig(array(
                                'proxy_host' => $this->_proxyUrl,
                        'proxy_port' => $this->_proxyPort,
                        'proxy_user' => $credentials[0],
                        'proxy_pass' => $credentials[1],
                ));
            } else {
                        $this->_httpClientChannel->setConfig(array(
                                'proxy_host' => '',
                        'proxy_port' => 8080,
                        'proxy_user' => '',
                        'proxy_pass' => '',
                ));
            }
        }
        
        public function getAccountName()
        {
                return $this->_accountName;
        }
        
        public function getBaseUrl()
        {
                if ($this->_usePathStyleUri) {
                        return 'http://' . $this->_host . '/' . $this->_accountName;
                } else {
                        return 'http://' . $this->_accountName . '.' . $this->_host;
                }
        }
        
        public function setCredentials(Zend_Service_WindowsAzure_Credentials_CredentialsAbstract $credentials)
        {
            $this->_credentials = $credentials;
            $this->_credentials->setAccountName($this->_accountName);
            $this->_credentials->setAccountkey($this->_accountKey);
            $this->_credentials->setUsePathStyleUri($this->_usePathStyleUri);
        }
        
        public function getCredentials()
        {
            return $this->_credentials;
        }
        
        protected function _performRequest(
                $path = '/',
                $queryString = '',
                $httpVerb = Zend_Http_Client::GET,
                $headers = array(),
                $forTableStorage = false,
                $rawData = null,
                $resourceType = Zend_Service_WindowsAzure_Storage::RESOURCE_UNKNOWN,
                $requiredPermission = Zend_Service_WindowsAzure_Credentials_CredentialsAbstract::PERMISSION_READ
        ) {
            // Clean path
                if (strpos($path, '/') !== 0) {
                        $path = '/' . $path;
                }
                        
                // Clean headers
                if (is_null($headers)) {
                    $headers = array();
                }
                
                // Ensure cUrl will also work correctly:
                //  - disable Content-Type if required
                //  - disable Expect: 100 Continue
                if (!isset($headers["Content-Type"])) {
                        $headers["Content-Type"] = '';
                }
                $headers["Expect"]= '';

                // Add version header
                $headers['x-ms-version'] = $this->_apiVersion;
                    
                // URL encoding
                $path           = self::urlencode($path);
                $queryString    = self::urlencode($queryString);

                // Generate URL and sign request
                $requestUrl     = $this->_credentials
                                                  ->signRequestUrl($this->getBaseUrl() . $path . $queryString, $resourceType, $requiredPermission);
                $requestHeaders = $this->_credentials
                                                  ->signRequestHeaders($httpVerb, $path, $queryString, $headers, $forTableStorage, $resourceType, $requiredPermission);

                // Prepare request
                $this->_httpClientChannel->resetParameters(true);
                $this->_httpClientChannel->setUri($requestUrl);
                $this->_httpClientChannel->setHeaders($requestHeaders);
                $this->_httpClientChannel->setRawData($rawData);
                
                // Execute request
                $response = $this->_retryPolicy->execute(
                    array($this->_httpClientChannel, 'request'),
                    array($httpVerb)
                );
                
                return $response;
        }
        
        protected function _parseResponse(Zend_Http_Response $response = null)
        {
                if (is_null($response)) {
                        throw new Zend_Service_WindowsAzure_Exception('Response should not be null.');
                }
                
        $xml = @simplexml_load_string($response->getBody());
        
        if ($xml !== false) {
            // Fetch all namespaces 
            $namespaces = array_merge($xml->getNamespaces(true), $xml->getDocNamespaces(true)); 
            
            // Register all namespace prefixes
            foreach ($namespaces as $prefix => $ns) { 
                if ($prefix != '') {
                    $xml->registerXPathNamespace($prefix, $ns);
                } 
            } 
        }
        
        return $xml;
        }
        
        protected function _generateMetadataHeaders($metadata = array())
        {
                // Validate
                if (!is_array($metadata)) {
                        return array();
                }
                
                // Return headers
                $headers = array();
                foreach ($metadata as $key => $value) {
                        if (strpos($value, "\r") !== false || strpos($value, "\n") !== false) {
                                throw new Zend_Service_WindowsAzure_Exception('Metadata cannot contain newline characters.');
                        }
                    $headers["x-ms-meta-" . strtolower($key)] = $value;
                }
                return $headers;
        }
        
        protected function _parseMetadataHeaders($headers = array())
        {
                // Validate
                if (!is_array($headers)) {
                        return array();
                }
                
                // Return metadata
                $metadata = array();
                foreach ($headers as $key => $value) {
                    if (substr(strtolower($key), 0, 10) == "x-ms-meta-") {
                        $metadata[str_replace("x-ms-meta-", '', strtolower($key))] = $value;
                    }
                }
                return $metadata;
        }
        
        public function isoDate($timestamp = null) 
        {        
            $tz = @date_default_timezone_get();
            @date_default_timezone_set('UTC');
            
            if (is_null($timestamp)) {
                $timestamp = time();
            }
                
            $returnValue = str_replace('+00:00', '.0000000Z', @date('c', $timestamp));
            @date_default_timezone_set($tz);
            return $returnValue;
        }
        
        public static function urlencode($value)
        {
            return str_replace(' ', '%20', $value);
        }
}