<?php

require_once(BASE_PATH . 'server/includes/core/class.encryptionstore.php');
require_once('zpushprops.php');

/**
 * PluginMDMModule Module
 */
class PluginMDMModule extends Module
{
	private $server = '';
	private $username = '';
	private $password = '';

	// content data
	const FOLDERUUID = 1;
	const FOLDERTYPE = 2;
	const FOLDERBACKENDID = 5;

	/**
	 * Constructor
	 * @param int $id unique id.
	 * @param array $data list of all actions.
	 */
	function __construct($id, $data)
	{
		parent::__construct($id, $data);

		$this->server = (PLUGIN_MDM_SERVER_SSL ? 'https://' : 'http://') . PLUGIN_MDM_SERVER;

		// Get the username and password from the Encryption store
		$encryptionStore = EncryptionStore::getInstance();
		$this->username = $encryptionStore->get('username');
		$this->password = $encryptionStore->get('password');

		$this->url = $this->server .'/Microsoft-Server-ActiveSync?Cmd=WebserviceDevice&DeviceId=webservice&DeviceType=webservice&User=' . $this->username;
	}

	/**
	 * Returns the version of the Z-Push server
	 * @return String
	 */
	function getServerVersion()
	{
		// Make a call to the service, so we can read the version
		// from the response headers
		try {
			$url = $this->server .'/Microsoft-Server-ActiveSync?Cmd=WebserviceInfo&DeviceId=webservice&DeviceType=webservice&User=' . $this->username;
			$client = $this->getSoapClient($url);
			return $client->About();
		} catch(Exception $e){}

		// If we can't find a version, we will simply return not available
		return dgettext('plugin_mdm', 'version not available');
	}

	/**
	 * Helper to setup a client.
	 */
	function getSoapClient($url='')
	{
		if ( empty($url) ){
			$url = $this->url;
		}

		return new SoapClient(null, array(
			'location' => $url,
			'uri' => $this->server,
			'trace' => 1,
			'login' => $this->username,
			'password' => $this->password
		));
	 }

	/**
	 * Function which calls the soap call to do a full resync
	 * @param int $deviceid of phone which has to be resynced
	 * @return json $response object contains the response of the soap request from Z-Push
	 */
	function resyncDevice($deviceid)
	{
		$client = $this->getSoapClient();
		return $client->ResyncDevice($deviceid);
	}

	/**
	 * Function which calls the wipeDevice soap call
	 * @param int $deviceid of phone which has to be wiped
	 * @param string $password user password
	 * @return json $response object contains the response of the soap request from Z-Push
	 */
	function wipeDevice($deviceid, $password)
	{
		if ($password == $this->password) {
			$client = $this->getSoapClient();
			return $client->WipeDevice($deviceid);
		} else {
			return false;
		}
	}

	/**
	 * function which calls the ListDeviceDetails soap call
	 * @return array $response array contains a list of devices connected to the users account
	 */
	function getDevices()
	{
		$client = $this->getSoapClient();
		return $client->ListDevicesDetails();
	}


	/**
	 * function which calls the wipeDevice soap call
	 * @param int $deviceid of phone which has to be wiped
	 * @return json $response object contains the response of the soap request from Z-Push
	 */
	function removeDevice($deviceid)
	{
		$client = $this->getSoapClient();
		return $client->RemoveDevice($deviceid);
	}


    /**
	 * Function witch is use get details of given device.
     * @param string $deviceid id of device.
     * @return array contains device props.
     */
    function getDeviceDetails($deviceid)
    {
        $client = $this->getSoapClient();
        $deviceRawData = $client->GetDeviceDetails($deviceid);
        $device = array();
        $device['props'] = $this->getDeviceProps($deviceRawData->data);
        $device["sharedfolders"] = array("item" => $this->getAdditionalFolderList($deviceid));
        return $device;
    }

	/**
	 * Executes all the actions in the $data variable.
	 * @return boolean true on success of false on fialure.
	 */
	function execute()
	{
		foreach($this->data as $actionType => $actionData)
		{
			if(isset($actionType)) {
				try {
					switch($actionType)
					{
						case 'wipe':
							$this->wipeDevice($actionData['deviceid'], $actionData['password']);
							$this->addActionData('wipe', array(
								'type' => 3,
								'wipe' => $this->wipeDevice($actionData['deviceid'], $actionData['password'])
							));
							$GLOBALS['bus']->addData($this->getResponseData());
							break;
						case 'resync':
							$this->addActionData('resync', array(
								'type' => 3,
								'resync' => $this->resyncDevice($actionData['deviceid'])
							));
							$GLOBALS['bus']->addData($this->getResponseData());
							break;
						case 'remove':
							$this->addActionData('remove', array(
								'type' => 3,
								'remove' => $this->removeDevice($actionData['deviceid'])
							));
							$GLOBALS['bus']->addData($this->getResponseData());
							break;
						case 'list':
							$items = array();
							$date['page'] = array();

							$rawData = $this->getDevices();
							foreach($rawData as $device){
								array_push($items, array('props' => $this->getDeviceProps($device->data)));
							}
							$data['page']['start'] = 0;
							$data['page']['rowcount'] = count($rawData);
							$data['page']['totalrowcount'] = $data['page']['rowcount'];
							$data = array_merge($data, array('item' => $items));

							$this->addActionData('list', $data);
							$GLOBALS['bus']->addData($this->getResponseData());
							break;

						case 'open':
                            $device = $this->getDeviceDetails($actionData["entryid"]);
                            $item = array("item" => $device);
							$this->addActionData('item', $item);
							$GLOBALS['bus']->addData($this->getResponseData());
							break;
                        case 'save':
                            $this ->saveDevice($actionData);
                            $device = $this->getDeviceDetails($actionData["entryid"]);
                            $item = array("item" => $device);
                            $this->addActionData('update', $item);
                            $GLOBALS['bus']->addData($this->getResponseData());
                            break;
						default:
							$this->handleUnknownActionType($actionType);
					}
				} catch (SoapFault $fault) {
					$display_message = dgettext('plugin_mdm', 'Something went wrong.');
					if ($fault->faultcode === 'HTTP') {
						if ($fault->getMessage() === "Unauthorized") {
							$display_message = dgettext('plugin_mdm', 'Unable to connect to Z-Push Server. Unauthorized.');
						}
						if ($fault->getMessage() === "Could not connect to host") {
							$display_message = dgettext('plugin_mdm', 'Unable to connect to Z-Push Server. Could not connect to host.');
						}
						if ($fault->getMessage() === "Not Found") {
							$display_message = dgettext('plugin_mdm', 'Unable to connect to Z-Push Server. Not found.');
						}
					} else if ($fault->faultcode === "ERROR") {
                        $errors = (explode(": ", $fault->getMessage()));
                        switch ($errors[0]) {
                            case "ASDevice->AddAdditionalFolder()":
                            case "ZPushAdmin::AdditionalFolderAdd()":
                                $display_message = dgettext('plugin_mdm', "Folder can not be added because there is already an additional folder with the same name");
                                break;

                            case "ASDevice->RemoveAdditionalFolder()":
                            case "ZPushAdmin::AdditionalFolderRemove()":
                                $display_message = dgettext('plugin_mdm', "Folder can not be removed because there is no folder known with given folder id");
                                break;
                            default:
                                $display_message = dgettext('plugin_mdm', "Device ID could not be found");
                        }
                    }
					$this->sendFeedback(false, array("type" => ERROR_GENERAL, "info" => array('display_message' => $display_message)));
				}
				catch (Exception $e) {
					$this->sendFeedback(true, array("type" => ERROR_GENERAL, "info" => array('display_message' => dgettext('plugin_mdm', 'Something went wrong'))));
				}
			}
		}
 	}


	/**
	 * Function which is use to get device properties.
	 *
	 * @param array $device array of device properties
	 * @return array
	 */
	function getDeviceProps($device)
	{
		$item = array();
		$propsList = ['devicetype', 'deviceos', 'devicefriendlyname', 'useragent', 'asversion', 'firstsynctime',
			'lastsynctime', 'lastupdatetime', 'wipestatus', 'policyname', 'koeversion', 'koebuild', 'koebuilddate'];

		$item['entryid'] = $device['deviceid'];
		$item['message_class'] = "IPM.MDM";
		foreach ($propsList as $prop) {
			if (isset($device[$prop])) {
				$item[$prop] = $device[$prop];
			}
		}

		$item = array_merge($item, $this->getSyncFoldersProps($device));
		return $item;
	}

	/**
	 * Function which is use to gather some statistics about synchronized folders.
	 * @param array $device array of device props
	 * @return array $syncFoldersProps has list of properties related to synchronized folders
	 */
	function getSyncFoldersProps($device)
	{
		$contentData = $device['contentdata'];
		$folders = array_keys($contentData);
		$synchedFolderTypes = array();
		$synchronizedFolders = 0;
		$hierarchyCache = isset($device['hierarchycache']) ? $device['hierarchycache'] : false;

		foreach ($folders as $folderid) {
			if (isset($contentData[$folderid][self::FOLDERUUID]) || isset($device['hierarchyuuid'])) {
				$type = $contentData[$folderid][self::FOLDERTYPE];
				$name = "unknown";
				if ($hierarchyCache) {
					if (array_key_exists($folderid, $hierarchyCache->cacheById)) {
						$folder = $hierarchyCache->cacheById[$folderid];
					} else {
						$folder = $hierarchyCache->cacheByIdOld[$folderid];
					}
					if ($folder) {
						$name = $folder->displayname;
					}
				}

				$folderType = $this->getSyncFolderType($type, $name);

				if (isset($contentData[$folderid][self::FOLDERUUID])) {
					if(isset($synchedFolderTypes[$folderType])){
                        $synchedFolderTypes[$folderType]++;
					} else {
                        $synchedFolderTypes[$folderType] = 1;
					}
				}
			}
		}
		$syncFoldersProps = array();
		foreach ($synchedFolderTypes as $key => $value) {
			$synchronizedFolders += $value;
			$syncFoldersProps[strtolower($key) . 'folder'] = $value;
		}
		$client = $this->getSoapClient();
		$items = $client->AdditionalFolderList($device['deviceid']);
		$syncFoldersProps['sharedfolders'] = count($items);
		$syncFoldersProps["shortfolderids"] = $device['hasfolderidmapping'] ? dgettext('plugin_mdm', "Yes") : dgettext('plugin_mdm', "No");
		$syncFoldersProps['synchronizedfolders'] = $synchronizedFolders + count($items);

		return $syncFoldersProps;
	}


	/**
	 * Function which is use to get general type like Mail,Calendar,Contacts,etc. from folder type.
	 * @param int $type foldertype for a folder already known to the mobile
	 * @param string $name folder name
	 * @return string general folder type
	 */
	function getSyncFolderType($type, $name)
	{
		switch ($type) {
			case SYNC_FOLDER_TYPE_APPOINTMENT:
			case SYNC_FOLDER_TYPE_USER_APPOINTMENT:
				if (KOE_GAB_NAME != "" && $name == KOE_GAB_NAME) {
					$folderType = "GAB";

				} else {
					$folderType = "Calendars";
				}
				break;
			case SYNC_FOLDER_TYPE_CONTACT:
			case SYNC_FOLDER_TYPE_USER_CONTACT:
				$folderType = "Contacts";
				break;
			case SYNC_FOLDER_TYPE_TASK:
			case SYNC_FOLDER_TYPE_USER_TASK:
				$folderType = "Tasks";
				break;
			case SYNC_FOLDER_TYPE_NOTE:
			case SYNC_FOLDER_TYPE_USER_NOTE:
				$folderType = "Notes";
				break;
			default:
				$folderType = "Emails";
				break;
		}
		return $folderType;
	}

	/**
	 * Function which is use to get list of additional folders which was shared with given device
	 * @param string $devid device id
	 * @return array has list of properties related to shared folders
	 */
	function getAdditionalFolderList($devid)
	{
		$stores = $GLOBALS["mapisession"]->getAllMessageStores();
		$client = $this->getSoapClient();
		$items = $client->AdditionalFolderList($devid);
		$data = array();
		foreach ($items as $item)
		{
			foreach ($stores as $store)
			{
				try {
					$entryid = mapi_msgstore_entryidfromsourcekey($store, hex2bin($item->folderid));
				} catch (MAPIException $me) {
					continue;
				}
			}
			if (isset($entryid)) {
				$item->entryid = bin2hex($entryid);
			}
			array_push($data, array("props" => $item));
		}
		return $data;
	}

    /**
	 * Function which is use to remove additional folder which was shared with given device.
     * @param string $entryId id of device.
     * @param string $folderid id of folder which will remove from device.
     */
	function additionalFolderRemove($entryId, $folderid)
    {
        $client = $this->getSoapClient();
        $client->AdditionalFolderRemove($entryId, $folderid);
    }

    /**
	 * Function which is use to add additional folder which will share with given device.
     * @param string $entryId id of device.
     * @param array $folder folder which will share with device.
     */
    function additionalFolderAdd($entryId, $folder)
    {
        $client = $this->getSoapClient();
        $containerClass = isset($folder[PR_CONTAINER_CLASS]) ? $folder[PR_CONTAINER_CLASS] : "IPF.Note";
        $folderId = bin2hex($folder[PR_SOURCE_KEY]);
        $userName = $folder["user"];
        $folderName = $userName === "SYSTEM" ? $folder[PR_DISPLAY_NAME] : $folder[PR_DISPLAY_NAME]." - ".$userName;
        $folderType = $this->getFolderTypeFromContainerClass($containerClass);
        $client->AdditionalFolderAdd($entryId, $userName, $folderId, $folderName, $folderType, FLD_FLAGS_REPLYASUSER);
    }

    /**
	 * Function which use to save the device.
	 * It will use to add or remove folders in the device.
     * @param array $data array of added and removed folders.
     */
	function saveDevice($data)
    {
        $entryid = $data["entryid"];
        if (isset($data['sharedfolders'])) {
            if (isset($data['sharedfolders']['remove'])) {
                $deletedFolders = $data['sharedfolders']['remove'];
                foreach ($deletedFolders as $folder) {
                    $this->additionalFolderRemove($entryid, $folder["folderid"]);
                }
            }
            if (isset($data['sharedfolders']['add'])) {
                $addFolders = $data['sharedfolders']['add'];
                $hierarchyFolders = $this->getHierarchyList();
                foreach ($addFolders as $folder) {
                    foreach ($hierarchyFolders as $hierarchyFolder) {
                        $folderEntryid = bin2hex($hierarchyFolder[PR_ENTRYID]);
                        if ($folderEntryid === $folder["entryid"]) {
                            $this->additionalFolderAdd($entryid, $hierarchyFolder);
                            continue 2;
                        }
                    }
                }
            }
        }
    }

	/**
	 * Gets the hierarchy list of all required stores.
	 * Function which is use to get the hierarchy list with PR_SOURCE_KEY.
	 * @return array the array of all hierarchy folders.
	 */
	function getHierarchyList()
	{
		$storeList = $GLOBALS["mapisession"]->getAllMessageStores();
		$properties = $GLOBALS["properties"]->getFolderListProperties();
		$otherUsers = $GLOBALS["mapisession"]->retrieveOtherUsersFromSettings();
		$properties["source_key"] = PR_SOURCE_KEY;
		$openWholeStore = true;
		$storeData = array();

		foreach ($storeList as $store) {
			$msgstore_props = mapi_getprops($store, array(PR_MDB_PROVIDER, PR_ENTRYID, PR_IPM_SUBTREE_ENTRYID, PR_USER_NAME));
			$storeType = $msgstore_props[PR_MDB_PROVIDER];

			if ($storeType == ZARAFA_SERVICE_GUID) {
				continue;
			} else if ($storeType == ZARAFA_STORE_DELEGATE_GUID) {
				$storeUserName = $GLOBALS["mapisession"]->getUserNameOfStore($msgstore_props[PR_ENTRYID]);
			} else if ($storeType == ZARAFA_STORE_PUBLIC_GUID) {
				$storeUserName = "SYSTEM";
			} else {
				$storeUserName = $msgstore_props[PR_USER_NAME];
			}

			if (is_array($otherUsers)) {
				if (isset($otherUsers[$storeUserName])) {
					$sharedFolders = $otherUsers[$storeUserName];
					if (!isset($otherUsers[$storeUserName]['all'])) {
						$openWholeStore = false;
						$a = $this->getSharedFolderList($store, $sharedFolders, $properties, $storeUserName);
						$storeData = array_merge($storeData, $a);
					}
				}
			}

			if ($openWholeStore) {
				if (isset($msgstore_props[PR_IPM_SUBTREE_ENTRYID])) {
					$subtreeFolderEntryID = $msgstore_props[PR_IPM_SUBTREE_ENTRYID];
					try {
						$subtreeFolder = mapi_msgstore_openentry($store, $subtreeFolderEntryID);
					} catch (MAPIException $e) {
						// We've handled the event
						$e->setHandled();
					}

					if ($storeType != ZARAFA_STORE_PUBLIC_GUID) {
						$this->getSubFolders($subtreeFolder, $store, $properties, $storeData, $storeUserName);
					} else {
						$this->getSubFoldersPublic($subtreeFolder, $store, $properties, $storeData, $storeUserName);
					}
				}
			}
		}

		return $storeData;
	}

	/**
	 * Helper function to get the shared folder list.
	 * @param object $store Message Store Object.
	 * @param object $sharedFolders Mapi Folder Object.
	 * @param array $properties MAPI property mappings for folders.
	 * @param string $storeUserName owner name of store.
	 * @return array shared folders list.
	 */
	function getSharedFolderList($store, $sharedFolders, $properties, $storeUserName)
	{
		$msgstore_props = mapi_getprops($store, array(PR_ENTRYID, PR_DISPLAY_NAME, PR_IPM_SUBTREE_ENTRYID, PR_IPM_OUTBOX_ENTRYID, PR_IPM_SENTMAIL_ENTRYID, PR_IPM_WASTEBASKET_ENTRYID, PR_MDB_PROVIDER, PR_IPM_PUBLIC_FOLDERS_ENTRYID, PR_IPM_FAVORITES_ENTRYID, PR_OBJECT_TYPE, PR_STORE_SUPPORT_MASK, PR_MAILBOX_OWNER_ENTRYID, PR_MAILBOX_OWNER_NAME, PR_USER_ENTRYID, PR_USER_NAME, PR_QUOTA_WARNING_THRESHOLD, PR_QUOTA_SEND_THRESHOLD, PR_QUOTA_RECEIVE_THRESHOLD, PR_MESSAGE_SIZE_EXTENDED, PR_MAPPING_SIGNATURE, PR_COMMON_VIEWS_ENTRYID, PR_FINDER_ENTRYID));
		$storeData = array();
		$folders = array();
		try {
			$inbox = mapi_msgstore_getreceivefolder($store);
			$inboxProps = mapi_getprops($inbox, array(PR_ENTRYID));
		} catch (MAPIException $e) {
			// don't propogate this error to parent handlers, if store doesn't support it
			if ($e->getCode() === MAPI_E_NO_SUPPORT) {
				$e->setHandled();
			}
		}

		$root = mapi_msgstore_openentry($store, null);
		$rootProps = mapi_getprops($root, array(PR_IPM_APPOINTMENT_ENTRYID, PR_IPM_CONTACT_ENTRYID, PR_IPM_DRAFTS_ENTRYID, PR_IPM_JOURNAL_ENTRYID, PR_IPM_NOTE_ENTRYID, PR_IPM_TASK_ENTRYID, PR_ADDITIONAL_REN_ENTRYIDS));

		$additional_ren_entryids = array();
		if (isset($rootProps[PR_ADDITIONAL_REN_ENTRYIDS])) {
			$additional_ren_entryids = $rootProps[PR_ADDITIONAL_REN_ENTRYIDS];
		}

		$defaultfolders = array(
			"default_folder_inbox" => array("inbox" => PR_ENTRYID),
			"default_folder_outbox" => array("store" => PR_IPM_OUTBOX_ENTRYID),
			"default_folder_sent" => array("store" => PR_IPM_SENTMAIL_ENTRYID),
			"default_folder_wastebasket" => array("store" => PR_IPM_WASTEBASKET_ENTRYID),
			"default_folder_favorites" => array("store" => PR_IPM_FAVORITES_ENTRYID),
			"default_folder_publicfolders" => array("store" => PR_IPM_PUBLIC_FOLDERS_ENTRYID),
			"default_folder_calendar" => array("root" => PR_IPM_APPOINTMENT_ENTRYID),
			"default_folder_contact" => array("root" => PR_IPM_CONTACT_ENTRYID),
			"default_folder_drafts" => array("root" => PR_IPM_DRAFTS_ENTRYID),
			"default_folder_journal" => array("root" => PR_IPM_JOURNAL_ENTRYID),
			"default_folder_note" => array("root" => PR_IPM_NOTE_ENTRYID),
			"default_folder_task" => array("root" => PR_IPM_TASK_ENTRYID),
			"default_folder_junk" => array("additional" => 4),
			"default_folder_syncissues" => array("additional" => 1),
			"default_folder_conflicts" => array("additional" => 0),
			"default_folder_localfailures" => array("additional" => 2),
			"default_folder_serverfailures" => array("additional" => 3),
		);

		foreach ($defaultfolders as $key => $prop) {
			$tag = reset($prop);
			$from = key($prop);
			switch ($from) {
				case "inbox":
					if (isset($inboxProps[$tag])) {
						$storeData["props"][$key] = bin2hex($inboxProps[$tag]);
					}
					break;
				case "store":
					if (isset($msgstore_props[$tag])) {
						$storeData["props"][$key] = bin2hex($msgstore_props[$tag]);
					}
					break;
				case "root":
					if (isset($rootProps[$tag])) {
						$storeData["props"][$key] = bin2hex($rootProps[$tag]);
					}
					break;
				case "additional":
					if (isset($additional_ren_entryids[$tag])) {
						$storeData["props"][$key] = bin2hex($additional_ren_entryids[$tag]);
					}
					break;
			}
		}

		$store_access = true;
		$openSubFolders = false;
		foreach ($sharedFolders as $type => $sharedFolder) {
			$openSubFolders = ($sharedFolder["show_subfolders"] == true);
			$folderEntryID = hex2bin($storeData["props"]["default_folder_" . $sharedFolder["folder_type"]]);
			try {
				// load folder props
				$folder = mapi_msgstore_openentry($store, $folderEntryID);
			} catch (MAPIException $e) {
				// Indicate that we don't have access to the store,
				// so no more attempts to read properties or open entries.
				$store_access = false;

				// We've handled the event
				$e->setHandled();
			}
		}

		if ($store_access === true) {
			$folderProps = mapi_getprops($folder, $properties);
			$folderProps["user"] = $storeUserName;
			array_push($folders, $folderProps);

			//If folder has sub folders then add its.
			if ($openSubFolders === true) {
				if ($folderProps[PR_SUBFOLDERS] != false) {
					$subFoldersData = array();
					$this->getSubFolders($folder, $store, $properties, $subFoldersData, $storeUserName);
					$folders =array_merge($folders, $subFoldersData);
				}
			}
		}
		return $folders;
	}


	/**
	 * Helper function to get the sub folders of a given folder.
	 *
	 * @access private
	 * @param object $folder Mapi Folder Object.
	 * @param object $store Message Store Object
	 * @param array $properties MAPI property mappings for folders
	 * @param array $storeData Reference to an array. The folder properties are added to this array.
	 * @param string $storeUserName owner name of store.
	 */
	function getSubFolders($folder, $store, $properties, &$storeData, $storeUserName)
	{
		/**
		 * remove hidden folders, folders with PR_ATTR_HIDDEN property set
		 * should not be shown to the client
		 */
		$restriction = Array(RES_OR, Array(
			Array(RES_PROPERTY,
				Array(
					RELOP => RELOP_EQ,
					ULPROPTAG => PR_ATTR_HIDDEN,
					VALUE => Array(PR_ATTR_HIDDEN => false)
				)
			),
			Array(RES_NOT,
				Array(
					Array(RES_EXIST,
						Array(
							ULPROPTAG => PR_ATTR_HIDDEN
						)
					)
				)
			)
		));


		$expand = Array(
			Array(
				'folder' => $folder,
				'props' => mapi_getprops($folder, Array(PR_ENTRYID, PR_SUBFOLDERS))
			)
		);

		// Start looping through the $expand array, during each loop we grab the first item in
		// the array and obtain the hierarchy table for that particular folder. If one of those
		// subfolders has subfolders of its own, it will be appended to $expand again to ensure
		// it will be expanded later.
		while (!empty($expand)) {
			$item = array_shift($expand);
			$columns = $properties;

			$hierarchyTable = mapi_folder_gethierarchytable($item['folder'], MAPI_DEFERRED_ERRORS);
			mapi_table_restrict($hierarchyTable, $restriction, TBL_BATCH);

			mapi_table_setcolumns($hierarchyTable, $columns);
			$columns = null;

			// Load the hierarchy in small batches
			$batchcount = 100;
			do {
				$rows = mapi_table_queryrows($hierarchyTable, $columns, 0, $batchcount);

				foreach ($rows as $subfolder) {

					// If the subfolders has subfolders of its own, append the folder
					// to the $expand array, so it can be expanded in the next loop.
					if ($subfolder[PR_SUBFOLDERS]) {
						$folderObject = mapi_msgstore_openentry($store, $subfolder[PR_ENTRYID]);
						array_push($expand, array('folder' => $folderObject, 'props' => $subfolder));
					}
					$subfolder["user"] = $storeUserName;
					// Add the folder to the return list.
					array_push($storeData, $subfolder);
				}

				// When the server returned a different number of rows then was requested,
				// we have reached the end of the table and we should exit the loop.
			} while (count($rows) === $batchcount);

		}
	}

	/**
	 * Helper function to get the subfolders of a Public Store
	 *
	 * @access private
	 * @param object $folder Mapi Folder Object.
	 * @param object $store Message Store Object
	 * @param array $properties MAPI property mappings for folders
	 * @param array $storeData Reference to an array. The folder properties are added to this array.
	 * @param string $storeUserName owner name of store.
	 */
	function getSubFoldersPublic($folder, $store, $properties, &$storeData, $storeUserName)
	{
		$expand = Array(
			Array(
				'folder' => $folder,
				'props' => mapi_getprops($folder, Array(PR_ENTRYID, PR_SUBFOLDERS))
			)
		);

		/**
		 * remove hidden folders, folders with PR_ATTR_HIDDEN property set
		 * should not be shown to the client
		 */
		$restriction =	Array(RES_OR, Array(
			Array(RES_PROPERTY,
				Array(
					RELOP => RELOP_EQ,
					ULPROPTAG => PR_ATTR_HIDDEN,
					VALUE => Array( PR_ATTR_HIDDEN => false )
				)
			),
			Array(RES_NOT,
				Array(
					Array(RES_EXIST,
						Array(
							ULPROPTAG => PR_ATTR_HIDDEN
						)
					)
				)
			)
		));

		// CONVENIENT_DEPTH doesn't work on the IPM_SUBTREE, hence we will be recursivly
		// walking through the hierarchy. However, we have some special folders like the
		// "Favorites" and "Public Folders" from where we can switch to using
		// CONVENIENT_DEPTH. Obtain these special cases here.
		$specialEntryids = mapi_getprops($store, array(
			PR_IPM_FAVORITES_ENTRYID,
			PR_IPM_PUBLIC_FOLDERS_ENTRYID
		));

		// Start looping through the $expand array, during each loop we grab the first item in
		// the array and obtain the hierarchy table for that particular folder. If one of those
		// subfolders has subfolders of its own, it will be appended to $expand again to ensure
		// it will be expanded later.
		while (!empty($expand)) {
			$item = array_shift($expand);
			$columns = $properties;
			$hierarchyTable = mapi_folder_gethierarchytable($item['folder'], MAPI_DEFERRED_ERRORS);

			mapi_table_restrict($hierarchyTable, $restriction, TBL_BATCH);

			mapi_table_setcolumns($hierarchyTable, $columns);
			$columns = null;

			// Load the hierarchy in small batches
			$batchcount = 100;
			do {
				$rows = mapi_table_queryrows($hierarchyTable, $columns, 0, $batchcount);

				foreach($rows as $subfolder) {
					$specialFolder = false;

					// Check if this folder is special...
					if (!empty($specialEntryids)) {
						foreach ($specialEntryids as $key => $value) {
							// No need to do compareEntryId(), the special folders have static
							// entryids, and can be compared using ===.
							if (bin2hex($subfolder[PR_ENTRYID]) === bin2hex($value)) {
								$specialFolder = mapi_msgstore_openentry($store, $subfolder[PR_ENTRYID]);
								$subfolder = mapi_getprops($specialFolder, $properties);

								// We found the folder, no need to loop over it next time.
								unset($specialEntryids[$key]);
								break;
							}
						}
					}

					// If the subfolders has subfolders of its own, append the folder
					// to the $expand array, so it can be expanded in the next loop.
					if ($subfolder[PR_SUBFOLDERS]) {
						if ($specialFolder) {
							// Special folders can be redirected again to getSubFolders(),
							$this->getSubFolders($specialFolder, $store, $properties, $storeData, $storeUserName);
						} else {
							$folderObject = mapi_msgstore_openentry($store, $subfolder[PR_ENTRYID]);
							array_push($expand, array('folder' => $folderObject, 'props' => $subfolder));
						}
					}

					$subfolder["user"] = $storeUserName;
					// Add the folder to the return list.
					array_push($storeData, $subfolder);
				}

				// When the server returned a different number of rows then was requested,
				// we have reached the end of the table and we should exit the loop.
			} while (count($rows) === $batchcount);
		}
	}

    /**
	 * Function which is use get folder types from the container class
     * @param string $containerClass container class of folder
     * @return int folder type
     */
    function getFolderTypeFromContainerClass($containerClass)
	{
        switch ($containerClass) {
            case  "IPF.Note":
				return SYNC_FOLDER_TYPE_USER_MAIL;
            case "IPF.Appointment":
				return SYNC_FOLDER_TYPE_USER_APPOINTMENT;
            case "IPF.Contact":
                return SYNC_FOLDER_TYPE_USER_CONTACT;
            case "IPF.StickyNote":
               return SYNC_FOLDER_TYPE_USER_NOTE;
            case "IPF.Task":
                return SYNC_FOLDER_TYPE_USER_TASK;
			case "IPF.Journal":
				return SYNC_FOLDER_TYPE_USER_JOURNAL;
			default:
				return SYNC_FOLDER_TYPE_UNKNOWN;
        }
	}
};
?>