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Editing: cloudfiles.php

<?php
/**
 * This is the PHP Cloud Files API.
 *
 * <code>
 * # Authenticate to Cloud Files. The default is to automatically try
 * # to re-authenticate if an authentication token expires.
 * #
 * # NOTE: Some versions of cURL include an outdated certificate authority (CA)
 * # file. This API ships with a newer version obtained directly from
 * # cURL's web site (http://curl.haxx.se). To use the newer CA bundle,
 * # call the CF_Authentication instance's 'ssl_use_cabundle()' method.
 * #
 * $auth = new CF_Authentication($username, $api_key);
 * # $auth->ssl_use_cabundle(); # bypass cURL's old CA bundle
 * $auth->authenticate();
 *
 * # Establish a connection to the storage system
 * #
 * # NOTE: Some versions of cURL include an outdated certificate authority (CA)
 * # file. This API ships with a newer version obtained directly from
 * # cURL's web site (http://curl.haxx.se). To use the newer CA bundle,
 * # call the CF_Connection instance's 'ssl_use_cabundle()' method.
 * #
 * $conn = new CF_Connection($auth);
 * # $conn->ssl_use_cabundle(); # bypass cURL's old CA bundle
 *
 * # Create a remote Container and storage Object
 * #
 * $images = $conn->create_container("photos");
 * $bday = $images->create_object("first_birthday.jpg");
 *
 * # Upload content from a local file by streaming it. Note that we use
 * # a "float" for the file size to overcome PHP's 32-bit integer limit for
 * # very large files.
 * #
 * $fname = "/home/user/photos/birthdays/birthday1.jpg"; # filename to upload
 * $size = (float) sprintf("%u", filesize($fname));
 * $fp = open($fname, "r");
 * $bday->write($fp, $size);
 *
 * # Or... use a convenience function instead
 * #
 * $bday->load_from_filename("/home/user/photos/birthdays/birthday1.jpg");
 *
 * # Now, publish the "photos" container to serve the images by CDN.
 * # Use the "$uri" value to put in your web pages or send the link in an
 * # email message, etc.
 * #
 * $uri = $images->make_public();
 *
 * # Or... print out the Object's public URI
 * #
 * print $bday->public_uri();
 * </code>
 *
 * See the included tests directory for additional sample code.
 *
 * Requres PHP 5.x (for Exceptions and OO syntax) and PHP's cURL module.
 *
 * It uses the supporting "cloudfiles_http.php" module for HTTP(s) support and
 * allows for connection re-use and streaming of content into/out of Cloud Files
 * via PHP's cURL module.
 *
 * See COPYING for license information.
 *
 * @author Eric "EJ" Johnson <ej@racklabs.com>
 * @copyright Copyright (c) 2008, Rackspace US, Inc.
 * @package php-cloudfiles
 */

/**
 */
require_once(UPDRAFTPLUS_DIR."/includes/cloudfiles/cloudfiles_exceptions.php");
require_once(UPDRAFTPLUS_DIR."/includes/cloudfiles/cloudfiles_http.php");
@define("DEFAULT_CF_API_VERSION", 1);
@define("MAX_CONTAINER_NAME_LEN", 256);
@define("MAX_OBJECT_NAME_LEN", 1024);
@define("MAX_OBJECT_SIZE", 5*1024*1024*1024+1);
@define("US_AUTHURL", "https://auth.api.rackspacecloud.com");
@define("UK_AUTHURL", "https://lon.auth.api.rackspacecloud.com");
/**
 * Class for handling Cloud Files Authentication, call it's {@link authenticate()}
 * method to obtain authorized service urls and an authentication token.
 *
 * Example:
 * <code>
 * # Create the authentication instance
 * #
 * $auth = new CF_Authentication("username", "api_key");
 *
 * # NOTE: For UK Customers please specify your AuthURL Manually
 * # There is a Predfined constant to use EX:
 * #
 * # $auth = new CF_Authentication("username, "api_key", NULL, UK_AUTHURL);
 * # Using the UK_AUTHURL keyword will force the api to use the UK AuthUrl.
 * # rather then the US one. The NULL Is passed for legacy purposes and must
 * # be passed to function correctly.
 *
 * # NOTE: Some versions of cURL include an outdated certificate authority (CA)
 * # file. This API ships with a newer version obtained directly from
 * # cURL's web site (http://curl.haxx.se). To use the newer CA bundle,
 * # call the CF_Authentication instance's 'ssl_use_cabundle()' method.
 * #
 * # $auth->ssl_use_cabundle(); # bypass cURL's old CA bundle
 *
 * # Perform authentication request
 * #
 * $auth->authenticate();
 * </code>
 *
 * @package php-cloudfiles
 */
class UpdraftPlus_CF_Authentication
{
 public $dbug;
 public $username;
 public $api_key;
 public $auth_host;
 public $account;

/**
     * Instance variables that are set after successful authentication
     */
    public $storage_url;
    public $cdnm_url;
    public $auth_token;

/**
 * Class constructor (PHP 5 syntax)
 *
 * @param string $username Mosso username
 * @param string $api_key Mosso API Access Key
 * @param string $account Account name
 * @param string $auth_host Authentication service URI
 */
 function __construct($username=NULL, $api_key=NULL, $account=NULL, $auth_host=US_AUTHURL)
 {

$this->dbug = False;
        $this->username = $username;
        $this->api_key = $api_key;
        $this->account_name = $account;
        $this->auth_host = $auth_host;

$this->storage_url = NULL;
        $this->cdnm_url = NULL;
        $this->auth_token = NULL;

$this->cfs_http = new UpdraftPlus_CF_Http(DEFAULT_CF_API_VERSION);
    }

/**
     * Use the Certificate Authority bundle included with this API
     *
     * Most versions of PHP with cURL support include an outdated Certificate
     * Authority (CA) bundle (the file that lists all valid certificate
     * signing authorities).  The SSL certificates used by the Cloud Files
     * storage system are perfectly valid but have been created/signed by
     * a CA not listed in these outdated cURL distributions.
     *
     * As a work-around, we've included an updated CA bundle obtained
     * directly from cURL's web site (http://curl.haxx.se).  You can direct
     * the API to use this CA bundle by calling this method prior to making
     * any remote calls.  The best place to use this method is right after
     * the CF_Authentication instance has been instantiated.
     *
     * You can specify your own CA bundle by passing in the full pathname
     * to the bundle.  You can use the included CA bundle by leaving the
     * argument blank.
     *
     * @param string $path Specify path to CA bundle (default to included)
     */
    function ssl_use_cabundle($path=NULL)
    {
        $this->cfs_http->ssl_use_cabundle($path);
    }

/**
 * Attempt to validate Username/API Access Key
 *
 * Attempts to validate credentials with the authentication service. It
 * either returns <kbd>True</kbd> or throws an Exception. Accepts a single
 * (optional) argument for the storage system API version.
 *
 * Example:
 * <code>
 * # Create the authentication instance
 * #
 * $auth = new CF_Authentication("username", "api_key");
 *
 * # Perform authentication request
 * #
 * $auth->authenticate();
 * </code>
 *
 * @param string $version API version for Auth service (optional)
 * @return boolean <kbd>True</kbd> if successfully authenticated
 * @throws AuthenticationException invalid credentials
 * @throws InvalidResponseException invalid response
 */
 function authenticate($version=DEFAULT_CF_API_VERSION)
 {
 list($status,$reason,$surl,$curl,$atoken) =
 $this->cfs_http->authenticate($this->username, $this->api_key,
 $this->account_name, $this->auth_host);

if ($status == 401) {
 throw new AuthenticationException("Invalid username or access key.");
 }
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Unexpected response (".$status."): ".$reason);
 }

if (!($surl || $curl) || !$atoken) {
 throw new InvalidResponseException(
 "Expected headers missing from auth service.");
 }
 $this->storage_url = $surl;
 $this->cdnm_url = $curl;
 $this->auth_token = $atoken;
 return True;
 }
	/**
	 * Use Cached Token and Storage URL's rather then grabbing from the Auth System
 *
 * Example:
 	 * <code>
 * #Create an Auth instance
 * $auth = new CF_Authentication();
 * #Pass Cached URL's and Token as Args
	 * $auth->load_cached_credentials("auth_token", "storage_url", "cdn_management_url");
 * </code>
	 *
	 * @param string $auth_token A Cloud Files Auth Token (Required)
 * @param string $storage_url The Cloud Files Storage URL (Required)
 * @param string $cdnm_url CDN Management URL (Required)
 * @return boolean <kbd>True</kbd> if successful
	 * @throws SyntaxException If any of the Required Arguments are missing
 */
	function load_cached_credentials($auth_token, $storage_url, $cdnm_url)
 {
 if(!$storage_url || !$cdnm_url)
 {
 throw new SyntaxException("Missing Required Interface URL's!");
 return False;
 }
 if(!$auth_token)
 {
 throw new SyntaxException("Missing Auth Token!");
 return False;
 }

$this->storage_url = $storage_url;
 $this->cdnm_url = $cdnm_url;
 $this->auth_token = $auth_token;
 return True;
 }
	/**
 * Grab Cloud Files info to be Cached for later use with the load_cached_credentials method.
 *
	 * Example:
 * <code>
 * #Create an Auth instance
 * $auth = new CF_Authentication("UserName","API_Key");
 * $auth->authenticate();
 * $array = $auth->export_credentials();
 * </code>
 *
	 * @return array of url's and an auth token.
 */
 function export_credentials()
 {
 $arr = array();
 $arr['storage_url'] = $this->storage_url;
 $arr['cdnm_url'] = $this->cdnm_url;
 $arr['auth_token'] = $this->auth_token;

return $arr;
    }

/**
 * Make sure the CF_Authentication instance has authenticated.
 *
 * Ensures that the instance variables necessary to communicate with
 * Cloud Files have been set from a previous authenticate() call.
 *
 * @return boolean <kbd>True</kbd> if successfully authenticated
 */
 function authenticated()
 {
 if (!($this->storage_url || $this->cdnm_url) || !$this->auth_token) {
 return False;
 }
 return True;
 }

/**
     * Toggle debugging - set cURL verbose flag
     */
    function setDebug($bool)
    {
        $this->dbug = $bool;
        $this->cfs_http->setDebug($bool);
    }
}

/**
 * Class for establishing connections to the Cloud Files storage system.
 * Connection instances are used to communicate with the storage system at
 * the account level; listing and deleting Containers and returning Container
 * instances.
 *
 * Example:
 * <code>
 * # Create the authentication instance
 * #
 * $auth = new CF_Authentication("username", "api_key");
 *
 * # Perform authentication request
 * #
 * $auth->authenticate();
 *
 * # Create a connection to the storage/cdn system(s) and pass in the
 * # validated CF_Authentication instance.
 * #
 * $conn = new CF_Connection($auth);
 *
 * # NOTE: Some versions of cURL include an outdated certificate authority (CA)
 * # file. This API ships with a newer version obtained directly from
 * # cURL's web site (http://curl.haxx.se). To use the newer CA bundle,
 * # call the CF_Authentication instance's 'ssl_use_cabundle()' method.
 * #
 * # $conn->ssl_use_cabundle(); # bypass cURL's old CA bundle
 * </code>
 *
 * @package php-cloudfiles
 */
class UpdraftPlus_CF_Connection
{
 public $dbug;
 public $cfs_http;
 public $cfs_auth;

/**
 * Pass in a previously authenticated CF_Authentication instance.
 *
 * Example:
 * <code>
 * # Create the authentication instance
 * #
 * $auth = new CF_Authentication("username", "api_key");
 *
 * # Perform authentication request
 * #
 * $auth->authenticate();
 *
 * # Create a connection to the storage/cdn system(s) and pass in the
 * # validated CF_Authentication instance.
 * #
 * $conn = new CF_Connection($auth);
 *
 * # If you are connecting via Rackspace servers and have access
 * # to the servicenet network you can set the $servicenet to True
 * # like this.
 *
 * $conn = new CF_Connection($auth, $servicenet=True);
 *
 * </code>
 *
 * If the environement variable RACKSPACE_SERVICENET is defined it will
 * force to connect via the servicenet.
 *
 * @param obj $cfs_auth previously authenticated CF_Authentication instance
 * @param boolean $servicenet enable/disable access via Rackspace servicenet.
 * @throws AuthenticationException not authenticated
 */
 function __construct($cfs_auth, $servicenet=False)
 {
 if (isset($_ENV['RACKSPACE_SERVICENET']))
 $servicenet=True;
 $this->cfs_http = new UpdraftPlus_CF_Http(DEFAULT_CF_API_VERSION);
 $this->cfs_auth = $cfs_auth;
 if (!$this->cfs_auth->authenticated()) {
 $e = "Need to pass in a previously authenticated ";
 $e .= "CF_Authentication instance.";
 throw new AuthenticationException($e);
 }
 $this->cfs_http->setCFAuth($this->cfs_auth, $servicenet=$servicenet);
 $this->dbug = False;
 }

/**
     * Toggle debugging of instance and back-end HTTP module
     *
     * @param boolean $bool enable/disable cURL debugging
     */
    function setDebug($bool)
    {
        $this->dbug = (boolean) $bool;
        $this->cfs_http->setDebug($this->dbug);
    }

/**
 * Close a connection
 *
 * Example:
 * <code>
 *
 * $conn->close();
 *
 * </code>
 *
 * Will close all current cUrl active connections.
 *
 */
 public function close()
 {
 $this->cfs_http->close();
 }

/**
 * Cloud Files account information
 *
 * Return an array of two floats (since PHP only supports 32-bit integers);
 * number of containers on the account and total bytes used for the account.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * list($quantity, $bytes) = $conn->get_info();
 * print "Number of containers: " . $quantity . "\n";
 * print "Bytes stored in container: " . $bytes . "\n";
 * </code>
 *
 * @return array (number of containers, total bytes stored)
 * @throws InvalidResponseException unexpected response
 */
 function get_info()
 {
 list($status, $reason, $container_count, $total_bytes) =
 $this->cfs_http->head_account();
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->get_info();
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return array($container_count, $total_bytes);
 }

/**
 * Create a Container
 *
 * Given a Container name, return a Container instance, creating a new
 * remote Container if it does not exit.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->create_container("my photos");
 * </code>
 *
 * @param string $container_name container name
 * @return CF_Container
 * @throws SyntaxException invalid name
 * @throws InvalidResponseException unexpected response
 */
 function create_container($container_name=NULL)
 {
 if ($container_name != "0" and !isset($container_name))
 throw new SyntaxException("Container name not set.");

if (!isset($container_name) or $container_name == "")
            throw new SyntaxException("Container name not set.");

if (strpos($container_name, "/") !== False) {
            $r = "Container name '".$container_name;
            $r .= "' cannot contain a '/' character.";
            throw new SyntaxException($r);
        }
        if (strlen($container_name) > MAX_CONTAINER_NAME_LEN) {
            throw new SyntaxException(sprintf(
                "Container name exeeds %d bytes.",
                MAX_CONTAINER_NAME_LEN));
        }

$return_code = $this->cfs_http->create_container($container_name);
        if (!$return_code) {
            throw new InvalidResponseException("Invalid response ("
                . $return_code. "): " . $this->cfs_http->get_error());
        }
        #if ($status == 401 && $this->_re_auth()) {
        #    return $this->create_container($container_name);
        #}
        if ($return_code != 201 && $return_code != 202) {
            throw new InvalidResponseException(
                "Invalid response (".$return_code."): "
                    . $this->cfs_http->get_error());
        }
        return new UpdraftPlus_CF_Container($this->cfs_auth, $this->cfs_http, $container_name);
    }

/**
 * Delete a Container
 *
 * Given either a Container instance or name, remove the remote Container.
 * The Container must be empty prior to removing it.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $conn->delete_container("my photos");
 * </code>
 *
 * @param string|obj $container container name or instance
 * @return boolean <kbd>True</kbd> if successfully deleted
 * @throws SyntaxException missing proper argument
 * @throws InvalidResponseException invalid response
 * @throws NonEmptyContainerException container not empty
 * @throws NoSuchContainerException remote container does not exist
 */
 function delete_container($container=NULL)
 {
 $container_name = NULL;

if (is_object($container)) {
            if (get_class($container) == "UpdraftPlus_CF_Container") {
                $container_name = $container->name;
            }
        }
        if (is_string($container)) {
            $container_name = $container;
        }

if ($container_name != "0" and !isset($container_name))
            throw new SyntaxException("Must specify container object or name.");

$return_code = $this->cfs_http->delete_container($container_name);

if (!$return_code) {
            throw new InvalidResponseException("Failed to obtain http response");
        }
        #if ($status == 401 && $this->_re_auth()) {
        #    return $this->delete_container($container);
        #}
        if ($return_code == 409) {
            throw new NonEmptyContainerException(
                "Container must be empty prior to removing it.");
        }
        if ($return_code == 404) {
            throw new NoSuchContainerException(
                "Specified container did not exist to delete.");
        }
        if ($return_code != 204) {
            throw new InvalidResponseException(
                "Invalid response (".$return_code."): "
                . $this->cfs_http->get_error());
        }
        return True;
    }

/**
 * Return a Container instance
 *
 * For the given name, return a Container instance if the remote Container
 * exists, otherwise throw a Not Found exception.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->get_container("my photos");
 * print "Number of Objects: " . $images->count . "\n";
 * print "Bytes stored in container: " . $images->bytes . "\n";
 * </code>
 *
 * @param string $container_name name of the remote Container
 * @return container CF_Container instance
 * @throws NoSuchContainerException thrown if no remote Container
 * @throws InvalidResponseException unexpected response
 */
 function get_container($container_name=NULL)
 {
 list($status, $reason, $count, $bytes) =
 $this->cfs_http->head_container($container_name);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->get_container($container_name);
 #}
 if ($status == 404) {
 throw new NoSuchContainerException("Container not found.");
 }
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response: ".$this->cfs_http->get_error());
 }
 return new UpdraftPlus_3CF_Container($this->cfs_auth, $this->cfs_http,
 $container_name, $count, $bytes);
 }

/**
 * Return array of Container instances
 *
 * Return an array of CF_Container instances on the account. The instances
 * will be fully populated with Container attributes (bytes stored and
 * Object count)
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $clist = $conn->get_containers();
 * foreach ($clist as $cont) {
 * print "Container name: " . $cont->name . "\n";
 * print "Number of Objects: " . $cont->count . "\n";
 * print "Bytes stored in container: " . $cont->bytes . "\n";
 * }
 * </code>
 *
 * @return array An array of CF_Container instances
 * @throws InvalidResponseException unexpected response
 */
 function get_containers($limit=0, $marker=NULL)
 {
 list($status, $reason, $container_info) =
 $this->cfs_http->list_containers_info($limit, $marker);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->get_containers();
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response: ".$this->cfs_http->get_error());
 }
 $containers = array();
 foreach ($container_info as $name => $info) {
 $containers[] = new UpdraftPlus_CF_Container($this->cfs_auth, $this->cfs_http,
 $info['name'], $info["count"], $info["bytes"], False);
 }
 return $containers;
 }

/**
 * Return list of remote Containers
 *
 * Return an array of strings containing the names of all remote Containers.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $container_list = $conn->list_containers();
 * print_r($container_list);
 * Array
 * (
 * [0] => "my photos",
 * [1] => "my docs"
 * )
 * </code>
 *
 * @param integer $limit restrict results to $limit Containers
 * @param string $marker return results greater than $marker
 * @return array list of remote Containers
 * @throws InvalidResponseException unexpected response
 */
 function list_containers($limit=0, $marker=NULL)
 {
 list($status, $reason, $containers) =
 $this->cfs_http->list_containers($limit, $marker);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->list_containers($limit, $marker);
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return $containers;
 }

/**
 * Return array of information about remote Containers
 *
 * Return a nested array structure of Container info.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 *
 * $container_info = $conn->list_containers_info();
 * print_r($container_info);
 * Array
 * (
 * ["my photos"] =>
 * Array
 * (
 * ["bytes"] => 78,
 * ["count"] => 2
 * )
 * ["docs"] =>
 * Array
 * (
 * ["bytes"] => 37323,
 * ["count"] => 12
 * )
 * )
 * </code>
 *
 * @param integer $limit restrict results to $limit Containers
 * @param string $marker return results greater than $marker
 * @return array nested array structure of Container info
 * @throws InvalidResponseException unexpected response
 */
 function list_containers_info($limit=0, $marker=NULL)
 {
 list($status, $reason, $container_info) =
 $this->cfs_http->list_containers_info($limit, $marker);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->list_containers_info($limit, $marker);
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return $container_info;
 }

/**
 * Return list of Containers that have been published to the CDN.
 *
 * Return an array of strings containing the names of published Containers.
 * Note that this function returns the list of any Container that has
 * ever been CDN-enabled regardless of it's existence in the storage
 * system.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_containers = $conn->list_public_containers();
 * print_r($public_containers);
 * Array
 * (
 * [0] => "images",
 * [1] => "css",
 * [2] => "javascript"
 * )
 * </code>
 *
 * @param bool $enabled_only Will list all containers ever CDN enabled if * set to false or only currently enabled CDN containers if set to true. * Defaults to false.
 * @return array list of published Container names
 * @throws InvalidResponseException unexpected response
 */
 function list_public_containers($enabled_only=False)
 {
 list($status, $reason, $containers) =
 $this->cfs_http->list_cdn_containers($enabled_only);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->list_public_containers();
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return $containers;
 }

/**
 * Set a user-supplied callback function to report download progress
 *
 * The callback function is used to report incremental progress of a data
 * download functions (e.g. $container->list_objects(), $obj->read(), etc).
 * The specified function will be periodically called with the number of
 * bytes transferred until the entire download is complete. This callback
 * function can be useful for implementing "progress bars" for large
 * downloads.
 *
 * The specified callback function should take a single integer parameter.
 *
 * <code>
 * function read_callback($bytes_transferred) {
 * print ">> downloaded " . $bytes_transferred . " bytes.\n";
 * # ... do other things ...
 * return;
 * }
 *
 * $conn = new CF_Connection($auth_obj);
 * $conn->set_read_progress_function("read_callback");
 * print_r($conn->list_containers());
 *
 * # output would look like this:
 * #
 * >> downloaded 10 bytes.
 * >> downloaded 11 bytes.
 * Array
 * (
 * [0] => fuzzy.txt
 * [1] => space name
 * )
 * </code>
 *
 * @param string $func_name the name of the user callback function
 */
 function set_read_progress_function($func_name)
 {
 $this->cfs_http->setReadProgressFunc($func_name);
 }

/**
 * Set a user-supplied callback function to report upload progress
 *
 * The callback function is used to report incremental progress of a data
 * upload functions (e.g. $obj->write() call). The specified function will
 * be periodically called with the number of bytes transferred until the
 * entire upload is complete. This callback function can be useful
 * for implementing "progress bars" for large uploads/downloads.
 *
 * The specified callback function should take a single integer parameter.
 *
 * <code>
 * function write_callback($bytes_transferred) {
 * print ">> uploaded " . $bytes_transferred . " bytes.\n";
 * # ... do other things ...
 * return;
 * }
 *
 * $conn = new CF_Connection($auth_obj);
 * $conn->set_write_progress_function("write_callback");
 * $container = $conn->create_container("stuff");
 * $obj = $container->create_object("foo");
 * $obj->write("The callback function will be called during upload.");
 *
 * # output would look like this:
 * # >> uploaded 51 bytes.
 * #
 * </code>
 *
 * @param string $func_name the name of the user callback function
 */
 function set_write_progress_function($func_name)
 {
 $this->cfs_http->setWriteProgressFunc($func_name);
 }

#private function _re_auth()
    #{
    #    $new_auth = new CF_Authentication(
    #        $this->cfs_auth->username,
    #        $this->cfs_auth->api_key,
    #        $this->cfs_auth->auth_host,
    #        $this->cfs_auth->account);
    #    $new_auth->authenticate();
    #    $this->cfs_auth = $new_auth;
    #    $this->cfs_http->setCFAuth($this->cfs_auth);
    #    return True;
    #}
}

/**
 * Container operations
 *
 * Containers are storage compartments where you put your data (objects).
 * A container is similar to a directory or folder on a conventional filesystem
 * with the exception that they exist in a flat namespace, you can not create
 * containers inside of containers.
 *
 * You also have the option of marking a Container as "public" so that the
 * Objects stored in the Container are publicly available via the CDN.
 *
 * @package php-cloudfiles
 */
class UpdraftPlus_CF_Container
{
    public $cfs_auth;
    public $cfs_http;
    public $name;
    public $object_count;
    public $bytes_used;
    public $metadata;
    public $cdn_enabled;
    public $cdn_streaming_uri;
    public $cdn_ssl_uri;
    public $cdn_uri;
    public $cdn_ttl;
    public $cdn_log_retention;
    public $cdn_acl_user_agent;
    public $cdn_acl_referrer;

/**
     * Class constructor
     *
     * Constructor for Container
     *
     * @param obj $cfs_auth CF_Authentication instance
     * @param obj $cfs_http HTTP connection manager
     * @param string $name name of Container
     * @param int $count number of Objects stored in this Container
     * @param int $bytes number of bytes stored in this Container
     * @throws SyntaxException invalid Container name
     */
    function __construct(&$cfs_auth, &$cfs_http, $name, $count=0,
        $bytes=0, $docdn=True)
    {
        if (strlen($name) > MAX_CONTAINER_NAME_LEN) {
            throw new SyntaxException("Container name exceeds "
                . "maximum allowed length.");
        }
        if (strpos($name, "/") !== False) {
            throw new SyntaxException(
                "Container names cannot contain a '/' character.");
        }
        $this->cfs_auth = $cfs_auth;
        $this->cfs_http = $cfs_http;
        $this->name = $name;
        $this->object_count = $count;
        $this->bytes_used = $bytes;
        $this->metadata = array();
        $this->cdn_enabled = NULL;
        $this->cdn_uri = NULL;
        $this->cdn_ssl_uri = NULL;
        $this->cdn_streaming_uri = NULL;
        $this->cdn_ttl = NULL;
        $this->cdn_log_retention = NULL;
        $this->cdn_acl_user_agent = NULL;
        $this->cdn_acl_referrer = NULL;
        if ($this->cfs_http->getCDNMUrl() != NULL && $docdn) {
            $this->_cdn_initialize();
        }
    }

/**
     * String representation of Container
     *
     * Pretty print the Container instance.
     *
     * @return string Container details
     */
    function __toString()
    {
        $me = sprintf("name: %s, count: %.0f, bytes: %.0f",
            $this->name, $this->object_count, $this->bytes_used);
        if ($this->cfs_http->getCDNMUrl() != NULL) {
            $me .= sprintf(", cdn: %s, cdn uri: %s, cdn ttl: %.0f, logs retention: %s",
                $this->is_public() ? "Yes" : "No",
                $this->cdn_uri, $this->cdn_ttl,
                $this->cdn_log_retention ? "Yes" : "No"
                );

if ($this->cdn_acl_user_agent != NULL) {
                $me .= ", cdn acl user agent: " . $this->cdn_acl_user_agent;
            }

if ($this->cdn_acl_referrer != NULL) {
                $me .= ", cdn acl referrer: " . $this->cdn_acl_referrer;
            }

}
        return $me;
    }

/**
 * Enable Container content to be served via CDN or modify CDN attributes
 *
 * Either enable this Container's content to be served via CDN or
 * adjust its CDN attributes. This Container will always return the
 * same CDN-enabled URI each time it is toggled public/private/public.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->create_container("public");
 *
 * # CDN-enable the container and set it's TTL for a month
 * #
 * $public_container->make_public(86400/2); # 12 hours (86400 seconds/day)
 * </code>
 *
 * @param int $ttl the time in seconds content will be cached in the CDN
 * @returns string the CDN enabled Container's URI
 * @throws CDNNotEnabledException CDN functionality not returned during auth
 * @throws AuthenticationException if auth token is not valid/expired
 * @throws InvalidResponseException unexpected response
 */
 function make_public($ttl=86400)
 {
 if ($this->cfs_http->getCDNMUrl() == NULL) {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 if ($this->cdn_uri != NULL) {
 # previously published, assume we're setting new attributes
 list($status, $reason, $cdn_uri, $cdn_ssl_uri) =
 $this->cfs_http->update_cdn_container($this->name,$ttl,
 $this->cdn_log_retention,
 $this->cdn_acl_user_agent,
 $this->cdn_acl_referrer);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->make_public($ttl);
 #}
 if ($status == 404) {
 # this instance _thinks_ the container was published, but the
 # cdn management system thinks otherwise - try again with a PUT
 list($status, $reason, $cdn_uri, $cdn_ssl_uri) =
 $this->cfs_http->add_cdn_container($this->name,$ttl);

}
 } else {
 # publish it for first time
 list($status, $reason, $cdn_uri, $cdn_ssl_uri) =
 $this->cfs_http->add_cdn_container($this->name,$ttl);
 }
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->make_public($ttl);
 #}
 if (!in_array($status, array(201,202))) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 $this->cdn_enabled = True;
 $this->cdn_ttl = $ttl;
 $this->cdn_ssl_uri = $cdn_ssl_uri;
 $this->cdn_uri = $cdn_uri;
 $this->cdn_log_retention = False;
 $this->cdn_acl_user_agent = "";
 $this->cdn_acl_referrer = "";
 return $this->cdn_uri;
 }
 /**
 * Purge Containers objects from CDN Cache.
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 * $container = $conn->get_container("cdn_enabled");
 * $container->purge_from_cdn("user@domain.com");
 * # or
 * $container->purge_from_cdn();
 * # or
 * $container->purge_from_cdn("user1@domain.com,user2@domain.com");
 * @returns boolean True if successful
 * @throws CDNNotEnabledException if CDN Is not enabled on this connection
 * @throws InvalidResponseException if the response expected is not returned
 */
 function purge_from_cdn($email=null)
 {
 if (!$this->cfs_http->getCDNMUrl())
 {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 $status = $this->cfs_http->purge_from_cdn($this->name, $email);
 if ($status < 199 or $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return True;
 }
 /**
 * Enable ACL restriction by User Agent for this container.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # Enable ACL by Referrer
 * $public_container->acl_referrer("Mozilla");
 * </code>
 *
 * @returns boolean True if successful
 * @throws CDNNotEnabledException CDN functionality not returned during auth
 * @throws AuthenticationException if auth token is not valid/expired
 * @throws InvalidResponseException unexpected response
 */
 function acl_user_agent($cdn_acl_user_agent="") {
 if ($this->cfs_http->getCDNMUrl() == NULL) {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 list($status,$reason) =
 $this->cfs_http->update_cdn_container($this->name,
 $this->cdn_ttl,
 $this->cdn_log_retention,
 $cdn_acl_user_agent,
 $this->cdn_acl_referrer
 );
 if (!in_array($status, array(202,404))) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 $this->cdn_acl_user_agent = $cdn_acl_user_agent;
 return True;
 }

/**
 * Enable ACL restriction by referer for this container.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # Enable Referrer
 * $public_container->acl_referrer("http://www.example.com/gallery.php");
 * </code>
 *
 * @returns boolean True if successful
 * @throws CDNNotEnabledException CDN functionality not returned during auth
 * @throws AuthenticationException if auth token is not valid/expired
 * @throws InvalidResponseException unexpected response
 */
 function acl_referrer($cdn_acl_referrer="") {
 if ($this->cfs_http->getCDNMUrl() == NULL) {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 list($status,$reason) =
 $this->cfs_http->update_cdn_container($this->name,
 $this->cdn_ttl,
 $this->cdn_log_retention,
 $this->cdn_acl_user_agent,
 $cdn_acl_referrer
 );
 if (!in_array($status, array(202,404))) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 $this->cdn_acl_referrer = $cdn_acl_referrer;
 return True;
 }

/**
 * Enable log retention for this CDN container.
 *
 * Enable CDN log retention on the container. If enabled logs will
 * be periodically (at unpredictable intervals) compressed and
 * uploaded to a ".CDN_ACCESS_LOGS" container in the form of
 * "container_name.YYYYMMDDHH-XXXX.gz". Requires CDN be enabled on
 * the account.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # Enable logs retention.
 * $public_container->log_retention(True);
 * </code>
 *
 * @returns boolean True if successful
 * @throws CDNNotEnabledException CDN functionality not returned during auth
 * @throws AuthenticationException if auth token is not valid/expired
 * @throws InvalidResponseException unexpected response
 */
 function log_retention($cdn_log_retention=False) {
 if ($this->cfs_http->getCDNMUrl() == NULL) {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 list($status,$reason) =
 $this->cfs_http->update_cdn_container($this->name,
 $this->cdn_ttl,
 $cdn_log_retention,
 $this->cdn_acl_user_agent,
 $this->cdn_acl_referrer
 );
 if (!in_array($status, array(202,404))) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 $this->cdn_log_retention = $cdn_log_retention;
 return True;
 }

/**
 * Disable the CDN sharing for this container
 *
 * Use this method to disallow distribution into the CDN of this Container's
 * content.
 *
 * NOTE: Any content already cached in the CDN will continue to be served
 * from its cache until the TTL expiration transpires. The default
 * TTL is typically one day, so "privatizing" the Container will take
 * up to 24 hours before the content is purged from the CDN cache.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # Disable CDN accessability
 * # ... still cached up to a month based on previous example
 * #
 * $public_container->make_private();
 * </code>
 *
 * @returns boolean True if successful
 * @throws CDNNotEnabledException CDN functionality not returned during auth
 * @throws AuthenticationException if auth token is not valid/expired
 * @throws InvalidResponseException unexpected response
 */
 function make_private()
 {
 if ($this->cfs_http->getCDNMUrl() == NULL) {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 list($status,$reason) = $this->cfs_http->remove_cdn_container($this->name);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->make_private();
 #}
 if (!in_array($status, array(202,404))) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 $this->cdn_enabled = False;
 $this->cdn_ttl = NULL;
 $this->cdn_uri = NULL;
 $this->cdn_ssl_uri = NULL;
 $this->cdn_streaming_uri - NULL;
 $this->cdn_log_retention = NULL;
 $this->cdn_acl_user_agent = NULL;
 $this->cdn_acl_referrer = NULL;
 return True;
 }

/**
 * Check if this Container is being publicly served via CDN
 *
 * Use this method to determine if the Container's content is currently
 * available through the CDN.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # Display CDN accessability
 * #
 * $public_container->is_public() ? print "Yes" : print "No";
 * </code>
 *
 * @returns boolean True if enabled, False otherwise
 */
 function is_public()
 {
 return $this->cdn_enabled == True ? True : False;
 }

/**
 * Create a new remote storage Object
 *
 * Return a new Object instance. If the remote storage Object exists,
 * the instance's attributes are populated.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # This creates a local instance of a storage object but only creates
 * # it in the storage system when the object's write() method is called.
 * #
 * $pic = $public_container->create_object("baby.jpg");
 * </code>
 *
 * @param string $obj_name name of storage Object
 * @return obj CF_Object instance
 */
 function create_object($obj_name=NULL)
 {
 return new UpdraftPlus_CF_Object($this, $obj_name);
 }

/**
 * Return an Object instance for the remote storage Object
 *
 * Given a name, return a Object instance representing the
 * remote storage object.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $public_container = $conn->get_container("public");
 *
 * # This call only fetches header information and not the content of
 * # the storage object. Use the Object's read() or stream() methods
 * # to obtain the object's data.
 * #
 * $pic = $public_container->get_object("baby.jpg");
 * </code>
 *
 * @param string $obj_name name of storage Object
 * @return obj CF_Object instance
 */
 function get_object($obj_name=NULL)
 {
 return new UpdraftPlus_CF_Object($this, $obj_name, True);
 }

/**
 * Return a list of Objects
 *
 * Return an array of strings listing the Object names in this Container.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $images = $conn->get_container("my photos");
 *
 * # Grab the list of all storage objects
 * #
 * $all_objects = $images->list_objects();
 *
 * # Grab subsets of all storage objects
 * #
 * $first_ten = $images->list_objects(10);
 *
 * # Note the use of the previous result's last object name being
 * # used as the 'marker' parameter to fetch the next 10 objects
 * #
 * $next_ten = $images->list_objects(10, $first_ten[count($first_ten)-1]);
 *
 * # Grab images starting with "birthday_party" and default limit/marker
 * # to match all photos with that prefix
 * #
 * $prefixed = $images->list_objects(0, NULL, "birthday");
 *
 * # Assuming you have created the appropriate directory marker Objects,
 * # you can traverse your pseudo-hierarchical containers
 * # with the "path" argument.
 * #
 * $animals = $images->list_objects(0,NULL,NULL,"pictures/animals");
 * $dogs = $images->list_objects(0,NULL,NULL,"pictures/animals/dogs");
 * </code>
 *
 * @param int $limit optional only return $limit names
 * @param int $marker optional subset of names starting at $marker
 * @param string $prefix optional Objects whose names begin with $prefix
 * @param string $path optional only return results under "pathname"
 * @return array array of strings
 * @throws InvalidResponseException unexpected response
 */
 function list_objects($limit=0, $marker=NULL, $prefix=NULL, $path=NULL)
 {
 list($status, $reason, $obj_list) =
 $this->cfs_http->list_objects($this->name, $limit,
 $marker, $prefix, $path);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->list_objects($limit, $marker, $prefix, $path);
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return $obj_list;
 }

/**
 * Return an array of Objects
 *
 * Return an array of Object instances in this Container.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $images = $conn->get_container("my photos");
 *
 * # Grab the list of all storage objects
 * #
 * $all_objects = $images->get_objects();
 *
 * # Grab subsets of all storage objects
 * #
 * $first_ten = $images->get_objects(10);
 *
 * # Note the use of the previous result's last object name being
 * # used as the 'marker' parameter to fetch the next 10 objects
 * #
 * $next_ten = $images->list_objects(10, $first_ten[count($first_ten)-1]);
 *
 * # Grab images starting with "birthday_party" and default limit/marker
 * # to match all photos with that prefix
 * #
 * $prefixed = $images->get_objects(0, NULL, "birthday");
 *
 * # Assuming you have created the appropriate directory marker Objects,
 * # you can traverse your pseudo-hierarchical containers
 * # with the "path" argument.
 * #
 * $animals = $images->get_objects(0,NULL,NULL,"pictures/animals");
 * $dogs = $images->get_objects(0,NULL,NULL,"pictures/animals/dogs");
 * </code>
 *
 * @param int $limit optional only return $limit names
 * @param int $marker optional subset of names starting at $marker
 * @param string $prefix optional Objects whose names begin with $prefix
 * @param string $path optional only return results under "pathname"
 * @return array array of strings
 * @throws InvalidResponseException unexpected response
 */
 function get_objects($limit=0, $marker=NULL, $prefix=NULL, $path=NULL, $delimiter=NULL)
 {
 list($status, $reason, $obj_array) =
 $this->cfs_http->get_objects($this->name, $limit,
 $marker, $prefix, $path, $delimiter);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->get_objects($limit, $marker, $prefix, $path);
 #}
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 $objects = array();
 foreach ($obj_array as $obj) {
 if(!isset($obj['subdir'])) {
 $tmp = new UpdraftPlus_CF_Object($this, $obj["name"], False, False);
 $tmp->content_type = $obj["content_type"];
 $tmp->content_length = (float) $obj["bytes"];
 $tmp->set_etag($obj["hash"]);
 $tmp->last_modified = $obj["last_modified"];
 $objects[] = $tmp;
 }
 }
 return $objects;
 }

/**
 * Copy a remote storage Object to a target Container
 *
 * Given an Object instance or name and a target Container instance or name, copy copies the remote Object
 * and all associated metadata.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->get_container("my photos");
 *
 * # Copy specific object
 * #
 * $images->copy_object_to("disco_dancing.jpg","container_target");
 * </code>
 *
 * @param obj $obj name or instance of Object to copy
 * @param obj $container_target name or instance of target Container
 * @param string $dest_obj_name name of target object (optional - uses source name if omitted)
 * @param array $metadata metadata array for new object (optional)
 * @param array $headers header fields array for the new object (optional)
 * @return boolean <kbd>true</kbd> if successfully copied
 * @throws SyntaxException invalid Object/Container name
 * @throws NoSuchObjectException remote Object does not exist
 * @throws InvalidResponseException unexpected response
 */
 function copy_object_to($obj,$container_target,$dest_obj_name=NULL,$metadata=NULL,$headers=NULL)
 {
 $obj_name = NULL;
 if (is_object($obj)) {
 if (get_class($obj) == "UpdraftPlus_CF_Object") {
 $obj_name = $obj->name;
 }
 }
 if (is_string($obj)) {
 $obj_name = $obj;
 }
 if (!$obj_name) {
 throw new SyntaxException("Object name not set.");
 }

if ($dest_obj_name === NULL) {
            $dest_obj_name = $obj_name;
				}

$container_name_target = NULL;
        if (is_object($container_target)) {
            if (get_class($container_target) == "UpdraftPlus_CF_Container") {
                $container_name_target = $container_target->name;
            }
        }
        if (is_string($container_target)) {
            $container_name_target = $container_target;
        }
        if (!$container_name_target) {
            throw new SyntaxException("Container name target not set.");
        }

$status = $this->cfs_http->copy_object($obj_name,$dest_obj_name,$this->name,$container_name_target,$metadata,$headers);
 if ($status == 404) {
 $m = "Specified object '".$this->name."/".$obj_name;
 $m.= "' did not exist as source to copy from or '".$container_name_target."' did not exist as target to copy to.";
 throw new NoSuchObjectException($m);
 }
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }
 return true;
 }

/**
 * Copy a remote storage Object from a source Container
 *
 * Given an Object instance or name and a source Container instance or name, copy copies the remote Object
 * and all associated metadata.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->get_container("my photos");
 *
 * # Copy specific object
 * #
 * $images->copy_object_from("disco_dancing.jpg","container_source");
 * </code>
 *
 * @param obj $obj name or instance of Object to copy
 * @param obj $container_source name or instance of source Container
 * @param string $dest_obj_name name of target object (optional - uses source name if omitted)
 * @param array $metadata metadata array for new object (optional)
 * @param array $headers header fields array for the new object (optional)
 * @return boolean <kbd>true</kbd> if successfully copied
 * @throws SyntaxException invalid Object/Container name
 * @throws NoSuchObjectException remote Object does not exist
 * @throws InvalidResponseException unexpected response
 */
 function copy_object_from($obj,$container_source,$dest_obj_name=NULL,$metadata=NULL,$headers=NULL)
 {
 $obj_name = NULL;
 if (is_object($obj)) {
 if (get_class($obj) == "UpdraftPlus_CF_Object") {
 $obj_name = $obj->name;
 }
 }
 if (is_string($obj)) {
 $obj_name = $obj;
 }
 if (!$obj_name) {
 throw new SyntaxException("Object name not set.");
 }

if ($dest_obj_name === NULL) {
            $dest_obj_name = $obj_name;
				}

$container_name_source = NULL;
        if (is_object($container_source)) {
            if (get_class($container_source) == "UpdraftPlus_CF_Container") {
                $container_name_source = $container_source->name;
            }
        }
        if (is_string($container_source)) {
            $container_name_source = $container_source;
        }
        if (!$container_name_source) {
            throw new SyntaxException("Container name source not set.");
        }

$status = $this->cfs_http->copy_object($obj_name,$dest_obj_name,$container_name_source,$this->name,$metadata,$headers);
 if ($status == 404) {
 $m = "Specified object '".$container_name_source."/".$obj_name;
 $m.= "' did not exist as source to copy from or '".$this->name."/".$obj_name."' did not exist as target to copy to.";
 throw new NoSuchObjectException($m);
 }
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->cfs_http->get_error());
 }

return true;
    }

/**
 * Move a remote storage Object to a target Container
 *
 * Given an Object instance or name and a target Container instance or name, move copies the remote Object
 * and all associated metadata and deletes the source Object afterwards
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->get_container("my photos");
 *
 * # Move specific object
 * #
 * $images->move_object_to("disco_dancing.jpg","container_target");
 * </code>
 *
 * @param obj $obj name or instance of Object to move
 * @param obj $container_target name or instance of target Container
 * @param string $dest_obj_name name of target object (optional - uses source name if omitted)
 * @param array $metadata metadata array for new object (optional)
 * @param array $headers header fields array for the new object (optional)
 * @return boolean <kbd>true</kbd> if successfully moved
 * @throws SyntaxException invalid Object/Container name
 * @throws NoSuchObjectException remote Object does not exist
 * @throws InvalidResponseException unexpected response
 */
 function move_object_to($obj,$container_target,$dest_obj_name=NULL,$metadata=NULL,$headers=NULL)
 {
 	$retVal = false;

if(self::copy_object_to($obj,$container_target,$dest_obj_name,$metadata,$headers)) {
        	$retVal = self::delete_object($obj,$this->name);
        }

return $retVal;
    }

/**
 * Move a remote storage Object from a source Container
 *
 * Given an Object instance or name and a source Container instance or name, move copies the remote Object
 * and all associated metadata and deletes the source Object afterwards
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->get_container("my photos");
 *
 * # Move specific object
 * #
 * $images->move_object_from("disco_dancing.jpg","container_target");
 * </code>
 *
 * @param obj $obj name or instance of Object to move
 * @param obj $container_source name or instance of target Container
 * @param string $dest_obj_name name of target object (optional - uses source name if omitted)
 * @param array $metadata metadata array for new object (optional)
 * @param array $headers header fields array for the new object (optional)
 * @return boolean <kbd>true</kbd> if successfully moved
 * @throws SyntaxException invalid Object/Container name
 * @throws NoSuchObjectException remote Object does not exist
 * @throws InvalidResponseException unexpected response
 */
 function move_object_from($obj,$container_source,$dest_obj_name=NULL,$metadata=NULL,$headers=NULL)
 {
 	$retVal = false;

if(self::copy_object_from($obj,$container_source,$dest_obj_name,$metadata,$headers)) {
        	$retVal = self::delete_object($obj,$container_source);
        }

return $retVal;
    }

/**
 * Delete a remote storage Object
 *
 * Given an Object instance or name, permanently remove the remote Object
 * and all associated metadata.
 *
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 *
 * $images = $conn->get_container("my photos");
 *
 * # Delete specific object
 * #
 * $images->delete_object("disco_dancing.jpg");
 * </code>
 *
 * @param obj $obj name or instance of Object to delete
 * @param obj $container name or instance of Container in which the object resides (optional)
 * @return boolean <kbd>True</kbd> if successfully removed
 * @throws SyntaxException invalid Object name
 * @throws NoSuchObjectException remote Object does not exist
 * @throws InvalidResponseException unexpected response
 */
 function delete_object($obj,$container=NULL)
 {
 $obj_name = NULL;
 if (is_object($obj)) {
 if (get_class($obj) == "UpdraftPlus_CF_Object") {
 $obj_name = $obj->name;
 }
 }
 if (is_string($obj)) {
 $obj_name = $obj;
 }
 if (!$obj_name) {
 throw new SyntaxException("Object name not set.");
 }

$container_name = NULL;

if($container === NULL) {
        	$container_name = $this->name;
        }
        else {
	        if (is_object($container)) {
	            if (get_class($container) == "UpdraftPlus_CF_Container") {
	                $container_name = $container->name;
	            }
	        }
	        if (is_string($container)) {
	            $container_name = $container;
	        }
	        if (!$container_name) {
	            throw new SyntaxException("Container name source not set.");
	        }
        }

$status = $this->cfs_http->delete_object($container_name, $obj_name);
        #if ($status == 401 && $this->_re_auth()) {
        #    return $this->delete_object($obj);
        #}
        if ($status == 404) {
            $m = "Specified object '".$container_name."/".$obj_name;
            $m.= "' did not exist to delete.";
            throw new NoSuchObjectException($m);
        }
        if ($status != 204) {
            throw new InvalidResponseException(
                "Invalid response (".$status."): ".$this->cfs_http->get_error());
        }
        return True;
    }

/**
     * Helper function to create "path" elements for a given Object name
     *
     * Given an Object whos name contains '/' path separators, this function
     * will create the "directory marker" Objects of one byte with the
     * Content-Type of "application/directory".
     *
     * It assumes the last element of the full path is the "real" Object
     * and does NOT create a remote storage Object for that last element.
     */
    function create_paths($path_name)
    {
        if ($path_name[0] == '/') {
            $path_name = mb_substr($path_name, 0, 1);
        }
        $elements = explode('/', $path_name, -1);
        $build_path = "";
        foreach ($elements as $idx => $val) {
            if (!$build_path) {
                $build_path = $val;
            } else {
                $build_path .= "/" . $val;
            }
            $obj = new UpdraftPlus_CF_Object($this, $build_path);
            $obj->content_type = "application/directory";
            $obj->write(".", 1);
        }
    }

/**
     * Internal method to grab CDN/Container info if appropriate to do so
     *
     * @throws InvalidResponseException unexpected response
     */
    private function _cdn_initialize()
    {
        list($status, $reason, $cdn_enabled, $cdn_ssl_uri, $cdn_streaming_uri, $cdn_uri, $cdn_ttl,
             $cdn_log_retention, $cdn_acl_user_agent, $cdn_acl_referrer) =
            $this->cfs_http->head_cdn_container($this->name);
        #if ($status == 401 && $this->_re_auth()) {
        #    return $this->_cdn_initialize();
        #}
        if (!in_array($status, array(204,404))) {
            throw new InvalidResponseException(
                "Invalid response (".$status."): ".$this->cfs_http->get_error());
        }
        $this->cdn_enabled = $cdn_enabled;
        $this->cdn_streaming_uri = $cdn_streaming_uri;
        $this->cdn_ssl_uri = $cdn_ssl_uri;
        $this->cdn_uri = $cdn_uri;
        $this->cdn_ttl = $cdn_ttl;
        $this->cdn_log_retention = $cdn_log_retention;
        $this->cdn_acl_user_agent = $cdn_acl_user_agent;
        $this->cdn_acl_referrer = $cdn_acl_referrer;
    }

/**
 * Object operations
 *
 * An Object is analogous to a file on a conventional filesystem. You can
 * read data from, or write data to your Objects. You can also associate
 * arbitrary metadata with them.
 *
 * @package php-cloudfiles
 */
class UpdraftPlus_CF_Object
{
    public $container;
    public $name;
    public $last_modified;
    public $content_type;
    public $content_length;
    public $metadata;
    public $headers;
    public $manifest;
    private $etag;

/**
     * Class constructor
     *
     * @param obj $container CF_Container instance
     * @param string $name name of Object
     * @param boolean $force_exists if set, throw an error if Object doesn't exist
     */
    function __construct(&$container, $name, $force_exists=False, $dohead=True)
    {
        if ($name[0] == "/") {
            $r = "Object name '".$name;
            $r .= "' cannot contain begin with a '/' character.";
            throw new SyntaxException($r);
        }
        if (strlen($name) > MAX_OBJECT_NAME_LEN) {
            throw new SyntaxException("Object name exceeds "
                . "maximum allowed length.");
        }
        $this->container = $container;
        $this->name = $name;
        $this->etag = NULL;
        $this->_etag_override = False;
        $this->last_modified = NULL;
        $this->content_type = NULL;
        $this->content_length = 0;
        $this->metadata = array();
        $this->headers = array();
        $this->manifest = NULL;
        if ($dohead) {
            if (!$this->_initialize() && $force_exists) {
                throw new NoSuchObjectException("No such object '".$name."'");
            }
        }
    }

/**
     * String representation of Object
     *
     * Pretty print the Object's location and name
     *
     * @return string Object information
     */
    function __toString()
    {
        return $this->container->name . "/" . $this->name;
    }

/**
 * Internal check to get the proper mimetype.
 *
 * This function would go over the available PHP methods to get
 * the MIME type.
 *
 * By default it will try to use the PHP fileinfo library which is
 * available from PHP 5.3 or as an PECL extension
 * (http://pecl.php.net/package/Fileinfo).
 *
 * It will get the magic file by default from the system wide file
 * which is usually available in /usr/share/magic on Unix or try
 * to use the file specified in the source directory of the API
 * (share directory).
 *
 * if fileinfo is not available it will try to use the internal
 * mime_content_type function.
 *
 * @param string $handle name of file or buffer to guess the type from
 * @return boolean <kbd>True</kbd> if successful
 * @throws BadContentTypeException
 */
 function _guess_content_type($handle) {
 if ($this->content_type)
 return;

if (function_exists("finfo_open")) {
            $local_magic = dirname(__FILE__) . "/share/magic";
            $finfo = @finfo_open(FILEINFO_MIME, $local_magic);

if (!$finfo)
                $finfo = @finfo_open(FILEINFO_MIME);

if ($finfo) {

if (is_file((string)$handle))
                    $ct = @finfo_file($finfo, $handle);
                else
                    $ct = @finfo_buffer($finfo, $handle);

/* PHP 5.3 fileinfo display extra information like
                   charset so we remove everything after the ; since
                   we are not into that stuff */
                if ($ct) {
                    $extra_content_type_info = strpos($ct, "; ");
                    if ($extra_content_type_info)
                        $ct = substr($ct, 0, $extra_content_type_info);
                }

if ($ct && $ct != 'application/octet-stream')
                    $this->content_type = $ct;

@finfo_close($finfo);
            }
        }

if (!$this->content_type && (string)is_file($handle) && function_exists("mime_content_type")) {
            $this->content_type = @mime_content_type($handle);
        }

if (!$this->content_type) {
            throw new BadContentTypeException("Required Content-Type not set");
        }
        return True;
    }

/**
 * String representation of the Object's public URI
 *
 * A string representing the Object's public URI assuming that it's
 * parent Container is CDN-enabled.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * # Print out the Object's CDN URI (if it has one) in an HTML img-tag
 * #
 * print "<img src='$pic->public_uri()' />\n";
 * </code>
 *
 * @return string Object's public URI or NULL
 */
 function public_uri()
 {
 if ($this->container->cdn_enabled) {
 return $this->container->cdn_uri . "/" . $this->name;
 }
 return NULL;
 }

/**
 * String representation of the Object's public SSL URI
 *
 * A string representing the Object's public SSL URI assuming that it's
 * parent Container is CDN-enabled.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * # Print out the Object's CDN SSL URI (if it has one) in an HTML img-tag
 * #
 * print "<img src='$pic->public_ssl_uri()' />\n";
 * </code>
 *
 * @return string Object's public SSL URI or NULL
 */
 function public_ssl_uri()
 {
 if ($this->container->cdn_enabled) {
 return $this->container->cdn_ssl_uri . "/" . $this->name;
 }
 return NULL;
 }
 /**
 * String representation of the Object's public Streaming URI
 *
 * A string representing the Object's public Streaming URI assuming that it's
 * parent Container is CDN-enabled.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * # Print out the Object's CDN Streaming URI (if it has one) in an HTML img-tag
 * #
 * print "<img src='$pic->public_streaming_uri()' />\n";
 * </code>
 *
 * @return string Object's public Streaming URI or NULL
 */
 function public_streaming_uri()
 {
 if ($this->container->cdn_enabled) {
 return $this->container->cdn_streaming_uri . "/" . $this->name;
 }
 return NULL;
 }

/**
 * Read the remote Object's data
 *
 * Returns the Object's data. This is useful for smaller Objects such
 * as images or office documents. Object's with larger content should use
 * the stream() method below.
 *
 * Pass in $hdrs array to set specific custom HTTP headers such as
 * If-Match, If-None-Match, If-Modified-Since, Range, etc.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * $my_docs = $conn->get_container("documents");
 * $doc = $my_docs->get_object("README");
 * $data = $doc->read(); # read image content into a string variable
 * print $data;
 *
 * # Or see stream() below for a different example.
 * #
 * </code>
 *
 * @param array $hdrs user-defined headers (Range, If-Match, etc.)
 * @return string Object's data
 * @throws InvalidResponseException unexpected response
 */
 function read($hdrs=array())
 {
 list($status, $reason, $data) =
 $this->container->cfs_http->get_object_to_string($this, $hdrs);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->read($hdrs);
 #}
 if (($status < 200) || ($status > 299
 && $status != 412 && $status != 304)) {
 throw new InvalidResponseException("Invalid response (".$status."): "
 . $this->container->cfs_http->get_error());
 }
 return $data;
 }

/**
 * Streaming read of Object's data
 *
 * Given an open PHP resource (see PHP's fopen() method), fetch the Object's
 * data and write it to the open resource handle. This is useful for
 * streaming an Object's content to the browser (videos, images) or for
 * fetching content to a local file.
 *
 * Pass in $hdrs array to set specific custom HTTP headers such as
 * If-Match, If-None-Match, If-Modified-Since, Range, etc.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * # Assuming this is a web script to display the README to the
 * # user's browser:
 * #
 * <?php
 * // grab README from storage system
 * //
 * $my_docs = $conn->get_container("documents");
 * $doc = $my_docs->get_object("README");
 *
 * // Hand it back to user's browser with appropriate content-type
 * //
 * header("Content-Type: " . $doc->content_type);
 * $output = fopen("php://output", "w");
 * $doc->stream($output); # stream object content to PHP's output buffer
 * fclose($output);
 * ?>
 *
 * # See read() above for a more simple example.
 * #
 * </code>
 *
 * @param resource $fp open resource for writing data to
 * @param array $hdrs user-defined headers (Range, If-Match, etc.)
 * @return string Object's data
 * @throws InvalidResponseException unexpected response
 */
 function stream(&$fp, $hdrs=array())
 {
 list($status, $reason) =
 $this->container->cfs_http->get_object_to_stream($this,$fp,$hdrs);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->stream($fp, $hdrs);
 #}
 if (($status < 200) || ($status > 299
 && $status != 412 && $status != 304)) {
 throw new InvalidResponseException("Invalid response (".$status."): "
 .$reason);
 }
 return True;
 }

/**
 * Store new Object metadata
 *
 * Write's an Object's metadata to the remote Object. This will overwrite
 * an prior Object metadata.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * $my_docs = $conn->get_container("documents");
 * $doc = $my_docs->get_object("README");
 *
 * # Define new metadata for the object
 * #
 * $doc->metadata = array(
 * "Author" => "EJ",
 * "Subject" => "How to use the PHP tests",
 * "Version" => "1.2.2"
 * );
 *
 * # Define additional headers for the object
 * #
 * $doc->headers = array(
 * "Content-Disposition" => "attachment",
 * );
 *
 * # Push the new metadata up to the storage system
 * #
 * $doc->sync_metadata();
 * </code>
 *
 * @return boolean <kbd>True</kbd> if successful, <kbd>False</kbd> otherwise
 * @throws InvalidResponseException unexpected response
 */
 function sync_metadata()
 {
 if (!empty($this->metadata) || !empty($this->headers) || $this->manifest) {
 $status = $this->container->cfs_http->update_object($this);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->sync_metadata();
 #}
 if ($status != 202) {
 throw new InvalidResponseException("Invalid response ("
 .$status."): ".$this->container->cfs_http->get_error());
 }
 return True;
 }
 return False;
 }
 /**
 * Store new Object manifest
 *
 * Write's an Object's manifest to the remote Object. This will overwrite
 * an prior Object manifest.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * $my_docs = $conn->get_container("documents");
 * $doc = $my_docs->get_object("README");
 *
 * # Define new manifest for the object
 * #
 * $doc->manifest = "container/prefix";
 *
 * # Push the new manifest up to the storage system
 * #
 * $doc->sync_manifest();
 * </code>
 *
 * @return boolean <kbd>True</kbd> if successful, <kbd>False</kbd> otherwise
 * @throws InvalidResponseException unexpected response
 */

$close_fh = False;
        if (!is_resource($data)) {
            # A hack to treat string data as a file handle.  php://memory feels
            # like a better option, but it seems to break on Windows so use
            # a temporary file instead.
            #
            $fp = fopen("php://temp", "wb+");
            #$fp = fopen("php://memory", "wb+");
            fwrite($fp, $data, strlen($data));
            rewind($fp);
            $close_fh = True;
            $this->content_length = (float) strlen($data);
            if ($this->content_length > MAX_OBJECT_SIZE) {
                throw new SyntaxException("Data exceeds maximum object size");
            }
            $ct_data = substr($data, 0, 64);
        } else {
            // The original Rackspace library used rewind() instead of ftell/fseek here - which meant fseek(0), which was sometimes wrong
            $fpos = ftell($data);
            $this->content_length = $bytes;
            $fp = $data;
            $ct_data = fread($data, 64);
            fseek($data, $fpos);
        }

$this->_guess_content_type($ct_data);

list($status, $reason, $etag) =
                $this->container->cfs_http->put_object($this, $fp);
        #if ($status == 401 && $this->_re_auth()) {
        #    return $this->write($data, $bytes, $verify);
        #}
        if ($status == 412) {
            if ($close_fh) { fclose($fp); }
            throw new SyntaxException("Missing Content-Type header");
        }
        if ($status == 422) {
            if ($close_fh) { fclose($fp); }
            throw new MisMatchedChecksumException(
                "Supplied and computed checksums do not match.");
        }
        if ($status != 201) {
            if ($close_fh) { fclose($fp); }
            throw new InvalidResponseException("Invalid response (".$status."): "
                . $this->container->cfs_http->get_error());
        }
        if (!$verify) {
            $this->etag = $etag;
        }
        if ($close_fh) { fclose($fp); }
        return True;
    }

/**
 * Upload Object data from local filename
 *
 * This is a convenience function to upload the data from a local file. A
 * True value for $verify will cause the method to compute the Object's MD5
 * checksum prior to uploading.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * $my_docs = $conn->get_container("documents");
 * $doc = $my_docs->get_object("README");
 *
 * # Upload my local README's content
 * #
 * $doc->load_from_filename("/home/ej/cloudfiles/readme");
 * </code>
 *
 * @param string $filename full path to local file
 * @param boolean $verify enable local/remote MD5 checksum validation
 * @return boolean <kbd>True</kbd> if data uploaded successfully
 * @throws SyntaxException missing required parameters
 * @throws BadContentTypeException if no Content-Type was/could be set
 * @throws MisMatchedChecksumException $verify is set and checksums unequal
 * @throws InvalidResponseException unexpected response
 * @throws IOException error opening file
 */
 function load_from_filename($filename, $verify=True)
 {
 $fp = @fopen($filename, "r");
 if (!$fp) {
 throw new IOException("Could not open file for reading: ".$filename);
 }

clearstatcache();

$size = (float) sprintf("%u", filesize($filename));
        if ($size > MAX_OBJECT_SIZE) {
            throw new SyntaxException("File size exceeds maximum object size.");
        }

$this->_guess_content_type($filename);

$this->write($fp, $size, $verify);
        fclose($fp);
        return True;
    }

/**
 * Save Object's data to local filename
 *
 * Given a local filename, the Object's data will be written to the newly
 * created file.
 *
 * Example:
 * <code>
 * # ... authentication/connection/container code excluded
 * # ... see previous examples
 *
 * # Whoops! I deleted my local README, let me download/save it
 * #
 * $my_docs = $conn->get_container("documents");
 * $doc = $my_docs->get_object("README");
 *
 * $doc->save_to_filename("/home/ej/cloudfiles/readme.restored");
 * </code>
 *
 * @param string $filename name of local file to write data to
 * @return boolean <kbd>True</kbd> if successful
 * @throws IOException error opening file
 * @throws InvalidResponseException unexpected response
 */
 function save_to_filename($filename)
 {
 $fp = @fopen($filename, "wb");
 if (!$fp) {
 throw new IOException("Could not open file for writing: ".$filename);
 }
 $result = $this->stream($fp);
 fclose($fp);
 return $result;
 }
 /**
 * Purge this Object from CDN Cache.
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * #
 * $conn = new CF_Connection($auth);
 * $container = $conn->get_container("cdn_enabled");
 * $obj = $container->get_object("object");
 * $obj->purge_from_cdn("user@domain.com");
 * # or
 * $obj->purge_from_cdn();
 * # or
 * $obj->purge_from_cdn("user1@domain.com,user2@domain.com");
 * </code>
 * @returns boolean True if successful
 * @throws CDNNotEnabledException if CDN Is not enabled on this connection
 * @throws InvalidResponseException if the response expected is not returned
 */
 function purge_from_cdn($email=null)
 {
 if (!$this->container->cfs_http->getCDNMUrl())
 {
 throw new CDNNotEnabledException(
 "Authentication response did not indicate CDN availability");
 }
 $status = $this->container->cfs_http->purge_from_cdn($this->container->name . "/" . $this->name, $email);
 if ($status < 199 or $status > 299) {
 throw new InvalidResponseException(
 "Invalid response (".$status."): ".$this->container->cfs_http->get_error());
 }
 return True;
 }

/**
     * Set Object's MD5 checksum
     *
     * Manually set the Object's ETag.  Including the ETag is mandatory for
     * Cloud Files to perform end-to-end verification.  Omitting the ETag forces
     * the user to handle any data integrity checks.
     *
     * @param string $etag MD5 checksum hexidecimal string
     */
    function set_etag($etag)
    {
        $this->etag = $etag;
        $this->_etag_override = True;
    }

/**
     * Object's MD5 checksum
     *
     * Accessor method for reading Object's private ETag attribute.
     *
     * @return string MD5 checksum hexidecimal string
     */
    function getETag()
    {
        return $this->etag;
    }

/**
 * Compute the MD5 checksum
 *
 * Calculate the MD5 checksum on either a PHP resource or data. The argument
 * may either be a local filename, open resource for reading, or a string.
 *
 * WARNING: if you are uploading a big file over a stream
 * it could get very slow to compute the md5 you probably want to
 * set the $verify parameter to False in the write() method and
 * compute yourself the md5 before if you have it.
 *
 * @param filename|obj|string $data filename, open resource, or string
 * @return string MD5 checksum hexidecimal string
 */
 function compute_md5sum(&$data)
 {

if (function_exists("hash_init") && is_resource($data)) {
            $ctx = hash_init('md5');
            $fpos = ftell($data);
            while (!feof($data)) {
                $buffer = fgets($data, 65536);
                hash_update($ctx, $buffer);
            }
            $md5 = hash_final($ctx, false);
            fseek($data, $fpos);
        } elseif ((string)is_file($data)) {
            $md5 = md5_file($data);
        } else {
            $md5 = md5($data);
        }
        return $md5;
    }

/**
 * PRIVATE: fetch information about the remote Object if it exists
 */
 private function _initialize()
 {
 list($status, $reason, $etag, $last_modified, $content_type,
 $content_length, $metadata, $manifest, $headers) =
 $this->container->cfs_http->head_object($this);
 #if ($status == 401 && $this->_re_auth()) {
 # return $this->_initialize();
 #}
 if ($status == 404) {
 return False;
 }
 if ($status < 200 || $status > 299) {
 throw new InvalidResponseException("Invalid response (".$status."): "
 . $this->container->cfs_http->get_error());
 }
 $this->etag = $etag;
 $this->last_modified = $last_modified;
 $this->content_type = $content_type;
 $this->content_length = $content_length;
 $this->metadata = $metadata;
 $this->headers = $headers;
 $this->manifest = $manifest;
 return True;
 }
 /**
 * Generate a Temp Url for a object
 * Example:
 * <code>
 * # ... authentication code excluded (see previous examples) ...
 * $conn = new CF_Connection($auth);
 * $container = $conn->get_container("foo");
 * $obj = $container->get_object("foo");
 * $tempurl = $obj->get_temp_url("shared_secret", "expire_time_in_seconds", "{HTTP_METHOD}"); (note: replace {HTTP_METHOD} with the request method: GET, POST, PUT, DELETE, etc.
 * </code>
 * @returns The temp url
 */
 public function get_temp_url($key, $expires, $method)
 {

$expires += time();
        $url = $this->container->cfs_http->getStorageUrl() .  '/' . $this->container->name . '/' . $this->name;
        return $url . '?temp_url_sig=' . hash_hmac('sha1', strtoupper($method) .
               "\n" . $expires . "\n" . parse_url($url, PHP_URL_PATH), $key) .
               '&temp_url_expires=' . $expires;
    }
     /**
     * Generate hidden input for form post.
     * @returns array Returns an associative array with form post input.
     */
    public function get_form_post_input($key, $expires, $redirect, $max_file_size=5368709120, $max_file_count=1)
    {

$expires += time();
        $url = $this->container->cfs_http->getStorageUrl() .  '/' . $this->container->name . '/' . $this->name;
        $form_post = array('action' => $url, 'redirect' => $redirect, 'max_file_size' => $max_file_size, 'expires' => $expires, 'file' => $this->name);
        $form_post['signature'] = hash_hmac('sha1', parse_url($url, PHP_URL_PATH) . "\n" . $redirect . "\n" . $max_file_size  . "\n" . $max_file_count . "\n" . $expires, $key );
        return $form_post;
    }
    #private function _re_auth()
    #{
    #    $new_auth = new CF_Authentication(
    #        $this->cfs_auth->username,
    #        $this->cfs_auth->api_key,
    #        $this->cfs_auth->auth_host,
    #        $this->cfs_auth->account);
    #    $new_auth->authenticate();
    #    $this->container->cfs_auth = $new_auth;
    #    $this->container->cfs_http->setCFAuth($this->cfs_auth);
    #    return True;
    #}
}

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * c-hanging-comment-ender-p: nil
 * End:
 */
?>