<?php
/***********************************************
* File      :   mapiprovider.php
* Project   :   Z-Push
* Descr     :
*
* Created   :   14.02.2011
*
* Copyright 2007 - 2016 Zarafa Deutschland GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
* Consult LICENSE file for details
************************************************/

class MAPIProvider {
    private $session;
    private $store;
    private $zRFC822;
    private $addressbook;
    private $storeProps;
    private $inboxProps;
    private $rootProps;
    private $specialFoldersData;

    /**
     * Constructor of the MAPI Provider
     * Almost all methods of this class require a MAPI session and/or store
     *
     * @param ressource         $session
     * @param ressource         $store
     *
     * @access public
     */
    function __construct($session, $store) {
        $this->session = $session;
        $this->store = $store;
    }


    /**----------------------------------------------------------------------------------------------------------
     * GETTER
     */

    /**
     * Reads a message from MAPI
     * Depending on the message class, a contact, appointment, task or email is read
     *
     * @param mixed             $mapimessage
     * @param ContentParameters $contentparameters
     *
     * @access public
     * @return SyncObject
     */
    public function GetMessage($mapimessage, $contentparameters) {
        // Gets the Sync object from a MAPI object according to its message class

        $props = mapi_getprops($mapimessage, array(PR_MESSAGE_CLASS));
        if(isset($props[PR_MESSAGE_CLASS]))
            $messageclass = $props[PR_MESSAGE_CLASS];
        else
            $messageclass = "IPM";

        if(strpos($messageclass,"IPM.Contact") === 0)
            return $this->getContact($mapimessage, $contentparameters);
        else if(strpos($messageclass,"IPM.Appointment") === 0)
            return $this->getAppointment($mapimessage, $contentparameters);
        else if(strpos($messageclass,"IPM.Task") === 0 && strpos($messageclass, "IPM.TaskRequest") === false)
            return $this->getTask($mapimessage, $contentparameters);
        else if(strpos($messageclass,"IPM.StickyNote") === 0)
            return $this->getNote($mapimessage, $contentparameters);
        else
            return $this->getEmail($mapimessage, $contentparameters);
    }

    /**
     * Reads a contact object from MAPI
     *
     * @param mixed             $mapimessage
     * @param ContentParameters $contentparameters
     *
     * @access private
     * @return SyncContact
     */
    private function getContact($mapimessage, $contentparameters) {
        $message = new SyncContact();

        // Standard one-to-one mappings first
        $this->getPropsFromMAPI($message, $mapimessage, MAPIMapping::GetContactMapping());

        // Contact specific props
        $contactproperties = MAPIMapping::GetContactProperties();
        $messageprops = $this->getProps($mapimessage, $contactproperties);

        //set the body according to contentparameters and supported AS version
        $this->setMessageBody($mapimessage, $contentparameters, $message);

        //check the picture
        if (isset($messageprops[$contactproperties["haspic"]]) && $messageprops[$contactproperties["haspic"]]) {
            // Add attachments
            $attachtable = mapi_message_getattachmenttable($mapimessage);
            mapi_table_restrict($attachtable, MAPIUtils::GetContactPicRestriction());
            $rows = mapi_table_queryallrows($attachtable, array(PR_ATTACH_NUM, PR_ATTACH_SIZE));

            foreach($rows as $row) {
                if(isset($row[PR_ATTACH_NUM])) {
                    $mapiattach = mapi_message_openattach($mapimessage, $row[PR_ATTACH_NUM]);
                    $message->picture = base64_encode(mapi_attach_openbin($mapiattach, PR_ATTACH_DATA_BIN));
                }
            }
        }

        return $message;
    }

    /**
     * Reads a task object from MAPI
     *
     * @param mixed             $mapimessage
     * @param ContentParameters $contentparameters
     *
     * @access private
     * @return SyncTask
     */
    private function getTask($mapimessage, $contentparameters) {
        $message = new SyncTask();

        // Standard one-to-one mappings first
        $this->getPropsFromMAPI($message, $mapimessage, MAPIMapping::GetTaskMapping());

        // Task specific props
        $taskproperties = MAPIMapping::GetTaskProperties();
        $messageprops = $this->getProps($mapimessage, $taskproperties);

        //set the body according to contentparameters and supported AS version
        $this->setMessageBody($mapimessage, $contentparameters, $message);

        //task with deadoccur is an occurrence of a recurring task and does not need to be handled as recurring
        //webaccess does not set deadoccur for the initial recurring task
        if(isset($messageprops[$taskproperties["isrecurringtag"]]) &&
            $messageprops[$taskproperties["isrecurringtag"]] &&
            (!isset($messageprops[$taskproperties["deadoccur"]]) ||
            (isset($messageprops[$taskproperties["deadoccur"]]) &&
            !$messageprops[$taskproperties["deadoccur"]]))) {
            // Process recurrence
            $message->recurrence = new SyncTaskRecurrence();
            $this->getRecurrence($mapimessage, $messageprops, $message, $message->recurrence, false);
        }

        // when set the task to complete using the WebAccess, the dateComplete property is not set correctly
        if ($message->complete == 1 && !isset($message->datecompleted))
            $message->datecompleted = time();

        // if no reminder is set, announce that to the mobile
        if (!isset($message->reminderset))
            $message->reminderset = 0;

        return $message;
    }

    /**
     * Reads an appointment object from MAPI
     *
     * @param mixed             $mapimessage
     * @param ContentParameters $contentparameters
     *
     * @access private
     * @return SyncAppointment
     */
    private function getAppointment($mapimessage, $contentparameters) {
        $message = new SyncAppointment();

        // Standard one-to-one mappings first
        $this->getPropsFromMAPI($message, $mapimessage, MAPIMapping::GetAppointmentMapping());

        // Appointment specific props
        $appointmentprops = MAPIMapping::GetAppointmentProperties();
        $messageprops = $this->getProps($mapimessage, $appointmentprops);

        //set the body according to contentparameters and supported AS version
        $this->setMessageBody($mapimessage, $contentparameters, $message);

        // Set reminder time if reminderset is true
        if(isset($messageprops[$appointmentprops["reminderset"]]) && $messageprops[$appointmentprops["reminderset"]] == true) {
            if ($messageprops[$appointmentprops["remindertime"]] == 0x5AE980E1)
                $message->reminder = 15;
            else
                $message->reminder = $messageprops[$appointmentprops["remindertime"]];
        }

        if(!isset($message->uid))
            $message->uid = bin2hex($messageprops[$appointmentprops["sourcekey"]]);
        else
            $message->uid = Utils::GetICalUidFromOLUid($message->uid);

        // Always set organizer information because some devices do not work properly without it
        if( isset($messageprops[$appointmentprops["representingentryid"]]) &&
            isset($messageprops[$appointmentprops["representingname"]])) {

            $message->organizeremail = w2u($this->getSMTPAddressFromEntryID($messageprops[$appointmentprops["representingentryid"]]));
            // if the email address can't be resolved, fall back to PR_SENT_REPRESENTING_SEARCH_KEY
            if ($message->organizeremail == "" && isset($messageprops[$appointmentprops["sentrepresentinsrchk"]])) {
                $message->organizeremail = $this->getEmailAddressFromSearchKey($messageprops[$appointmentprops["sentrepresentinsrchk"]]);
            }
            $message->organizername = w2u($messageprops[$appointmentprops["representingname"]]);
        }

        $appTz = false; // if the appointment has some timezone information saved on the server
        if (!empty($messageprops[$appointmentprops["timezonetag"]])) {
            $tz = $this->getTZFromMAPIBlob($messageprops[$appointmentprops["timezonetag"]]);
            $appTz = true;
        }
        elseif (!empty($messageprops[$appointmentprops["timezonedesc"]])) {
            // Windows uses UTC in timezone description in opposite to mstzones in TimezoneUtil which uses GMT
            $wintz = str_replace("UTC", "GMT", $messageprops[$appointmentprops["timezonedesc"]]);
            $tz = TimezoneUtil::GetFullTZFromTZName(TimezoneUtil::GetTZNameFromWinTZ($wintz));
            $appTz = true;
        }
        else {
            // set server default timezone (correct timezone should be configured!)
            $tz = TimezoneUtil::GetFullTZ();
        }

        if(isset($messageprops[$appointmentprops["isrecurring"]]) && $messageprops[$appointmentprops["isrecurring"]]) {
            // Process recurrence
            $message->recurrence = new SyncRecurrence();
            $this->getRecurrence($mapimessage, $messageprops, $message, $message->recurrence, $tz);

            // outlook seems to honour the timezone information contrary to other clients
            if (empty($message->alldayevent) || Request::IsOutlook()) {
                $message->timezone = base64_encode(TimezoneUtil::GetSyncBlobFromTZ($tz));
            }
        }

        // Do attendees
        $reciptable = mapi_message_getrecipienttable($mapimessage);
        // Only get first 256 recipients, to prevent possible load issues.
        $rows = mapi_table_queryrows($reciptable, array(PR_DISPLAY_NAME, PR_EMAIL_ADDRESS, PR_SMTP_ADDRESS, PR_ADDRTYPE, PR_RECIPIENT_TRACKSTATUS, PR_RECIPIENT_TYPE, PR_SEARCH_KEY), 0, 256);

        // Exception: we do not synchronize appointments with more than 250 attendees
        if (count($rows) > 250) {
            $message->id = bin2hex($messageprops[$appointmentprops["sourcekey"]]);
            $mbe = new SyncObjectBrokenException("Appointment has too many attendees");
            $mbe->SetSyncObject($message);
            throw $mbe;
        }

        if(count($rows) > 0)
            $message->attendees = array();

        foreach($rows as $row) {
            $attendee = new SyncAttendee();

            $attendee->name = w2u($row[PR_DISPLAY_NAME]);
            //smtp address is always a proper email address
            if(isset($row[PR_SMTP_ADDRESS]))
                $attendee->email = w2u($row[PR_SMTP_ADDRESS]);
            elseif (isset($row[PR_ADDRTYPE]) && isset($row[PR_EMAIL_ADDRESS])) {
                //if address type is SMTP, it's also a proper email address
                if ($row[PR_ADDRTYPE] == "SMTP")
                    $attendee->email = w2u($row[PR_EMAIL_ADDRESS]);
                //if address type is ZARAFA, the PR_EMAIL_ADDRESS contains username
                elseif ($row[PR_ADDRTYPE] == "ZARAFA") {
                    $userinfo = @mapi_zarafa_getuser_by_name($this->store, $row[PR_EMAIL_ADDRESS]);
                    if (is_array($userinfo) && isset($userinfo["emailaddress"])) {
                        $attendee->email = w2u($userinfo["emailaddress"]);
                    }
                    // if the user was not found, do a fallback to PR_SEARCH_KEY
                    // @see https://jira.z-hub.io/browse/ZP-1178
                    elseif (isset($row[PR_SEARCH_KEY])) {
                        $attendee->email = w2u($this->getEmailAddressFromSearchKey($row[PR_SEARCH_KEY]));
                    }
                    else {
                        ZLog::Write(LOGLEVEL_WARN, sprintf("MAPIProvider->getAppointment: The attendee '%s' of type ZARAFA can not be resolved. Code: 0x%X", $row[PR_EMAIL_ADDRESS], mapi_last_hresult()));
                    }
                }
            }

            //set attendee's status and type if they're available and if we are the organizer
            $storeprops = $this->GetStoreProps();
            if (isset($row[PR_RECIPIENT_TRACKSTATUS], $messageprops[$appointmentprops["representingentryid"]], $storeprops[PR_MAILBOX_OWNER_ENTRYID]) &&
                    $messageprops[$appointmentprops["representingentryid"]] == $storeprops[PR_MAILBOX_OWNER_ENTRYID]) {

                $attendee->attendeestatus = $row[PR_RECIPIENT_TRACKSTATUS];
            }
            if (isset($row[PR_RECIPIENT_TYPE])) {
                $attendee->attendeetype = $row[PR_RECIPIENT_TYPE];
            }
            // Some attendees have no email or name (eg resources), and if you
            // don't send one of those fields, the phone will give an error ... so
            // we don't send it in that case.
            // also ignore the "attendee" if the email is equal to the organizers' email
            if(isset($attendee->name) && isset($attendee->email) && $attendee->email != "" && (!isset($message->organizeremail) || (isset($message->organizeremail) && $attendee->email != $message->organizeremail)))
                array_push($message->attendees, $attendee);
        }

        // Status 0 = no meeting, status 1 = organizer, status 2/3/4/5 = tentative/accepted/declined/notresponded
        if(isset($messageprops[$appointmentprops["meetingstatus"]]) && $messageprops[$appointmentprops["meetingstatus"]] > 1) {
            if (!isset($message->attendees) || !is_array($message->attendees))
                $message->attendees = array();
            // Work around iOS6 cancellation issue when there are no attendees for this meeting. Just add ourselves as the sole attendee.
            if(count($message->attendees) == 0) {

                ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->getAppointment: adding ourself as an attendee for iOS6 workaround"));
                $attendee = new SyncAttendee();

                $meinfo = mapi_zarafa_getuser_by_name($this->store, Request::GetUser());

                if (is_array($meinfo)) {
                    $attendee->email = w2u($meinfo["emailaddress"]);
                    $attendee->name = w2u($meinfo["fullname"]);
                    $attendee->attendeetype = MAPI_TO;

                    array_push($message->attendees, $attendee);
                }
            }
            $message->responsetype = $messageprops[$appointmentprops["responsestatus"]];
        }

        // If it's an appointment which doesn't have any attendees, we have to make sure that
        // the user is the owner or it will not work properly with android devices
        // @see https://jira.z-hub.io/browse/ZP-1020
        if(isset($messageprops[$appointmentprops["meetingstatus"]]) && $messageprops[$appointmentprops["meetingstatus"]] == olNonMeeting && empty($message->attendees)) {
            $meinfo = mapi_zarafa_getuser_by_name($this->store, Request::GetUser());

            if (is_array($meinfo)) {
                $message->organizeremail = w2u($meinfo["emailaddress"]);
                $message->organizername = w2u($meinfo["fullname"]);
                ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->getAppointment(): setting ourself as the organizer for an appointment without attendees.");
            }

        }

        if (!isset($message->nativebodytype)) {
            $message->nativebodytype = MAPIUtils::GetNativeBodyType($messageprops);
        }
        elseif ($message->nativebodytype == SYNC_BODYPREFERENCE_UNDEFINED) {
            $nbt = MAPIUtils::GetNativeBodyType($messageprops);
            ZLog::Write(LOGLEVEL_INFO, sprintf("MAPIProvider->getAppointment(): native body type is undefined. Set it to %d.", $nbt));
            $message->nativebodytype = $nbt;
        }

        // If the user is working from a location other than the office the busystatus should be interpreted as free.
        if (isset($message->busystatus) && $message->busystatus == fbWorkingElsewhere) {
            $message->busystatus = fbFree;
        }

        // If the busystatus has the value of -1, we should be interpreted as tentative (1) / ZP-581
        if (isset($message->busystatus) && $message->busystatus == -1) {
            $message->busystatus = fbTentative;
        }

        // All-day events might appear as 24h (or multiple of it) long when they start not exactly at midnight (+/- bias of the timezone)
        if (isset($message->alldayevent) && $message->alldayevent) {
            $localStartTime = localtime($message->starttime, 1);

            // The appointment is all-day but doesn't start at midnight.
            // If it was created in another timezone and we have that information,
            // set the startime to the midnight of the current timezone.
            if ($appTz && ($localStartTime['tm_hour'] || $localStartTime['tm_min'])) {
                ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->getAppointment(): all-day event starting not midnight.");
                $duration = $message->endtime - $message->starttime;
                $serverTz = TimezoneUtil::GetFullTZ();
                $message->starttime = $this->getGMTTimeByTZ($this->getLocaltimeByTZ($message->starttime, $tz), $serverTz);
                $message->endtime = $message->starttime + $duration;
            }
        }

        return $message;
    }

    /**
     * Reads recurrence information from MAPI
     *
     * @param mixed             $mapimessage
     * @param array             $recurprops
     * @param SyncObject        &$syncMessage       the message
     * @param SyncObject        &$syncRecurrence    the  recurrence message
     * @param array             $tz                 timezone information
     *
     * @access private
     * @return
     */
    private function getRecurrence($mapimessage, $recurprops, &$syncMessage, &$syncRecurrence, $tz) {
        if ($syncRecurrence instanceof SyncTaskRecurrence)
            $recurrence = new TaskRecurrence($this->store, $mapimessage);
        else
            $recurrence = new Recurrence($this->store, $mapimessage);

        switch($recurrence->recur["type"]) {
            case 10: // daily
                switch($recurrence->recur["subtype"]) {
                    default:
                        $syncRecurrence->type = 0;
                        break;
                    case 1:
                        $syncRecurrence->type = 0;
                        $syncRecurrence->dayofweek = 62; // mon-fri
                        $syncRecurrence->interval = 1;
                        break;
                }
                break;
            case 11: // weekly
                    $syncRecurrence->type = 1;
                break;
            case 12: // monthly
                switch($recurrence->recur["subtype"]) {
                    default:
                        $syncRecurrence->type = 2;
                        break;
                    case 3:
                        $syncRecurrence->type = 3;
                        break;
                }
                break;
            case 13: // yearly
                switch($recurrence->recur["subtype"]) {
                    default:
                        $syncRecurrence->type = 4;
                        break;
                    case 2:
                        $syncRecurrence->type = 5;
                        break;
                    case 3:
                        $syncRecurrence->type = 6;
                }
        }
        // Termination
        switch($recurrence->recur["term"]) {
            case 0x21:
                $syncRecurrence->until = $recurrence->recur["end"];
                // fixes Mantis #350 : recur-end does not consider timezones - use ClipEnd if available
                if (isset($recurprops[$recurrence->proptags["enddate_recurring"]]))
                    $syncRecurrence->until = $recurprops[$recurrence->proptags["enddate_recurring"]];
                // add one day (minus 1 sec) to the end time to make sure the last occurrence is covered
                $syncRecurrence->until += 86399;
                break;
            case 0x22:
                $syncRecurrence->occurrences = $recurrence->recur["numoccur"]; break;
            case 0x23:
                // never ends
                break;
        }

        // Correct 'alldayevent' because outlook fails to set it on recurring items of 24 hours or longer
        if(isset($recurrence->recur["endocc"], $recurrence->recur["startocc"]) && ($recurrence->recur["endocc"] - $recurrence->recur["startocc"] >= 1440))
            $syncMessage->alldayevent = true;

        // Interval is different according to the type/subtype
        switch($recurrence->recur["type"]) {
            case 10:
                if($recurrence->recur["subtype"] == 0)
                    $syncRecurrence->interval = (int)($recurrence->recur["everyn"] / 1440);  // minutes
                break;
            case 11:
            case 12:
                $syncRecurrence->interval = $recurrence->recur["everyn"];
                break; // months / weeks
            case 13:
                $syncRecurrence->interval = (int)($recurrence->recur["everyn"] / 12);
                break; // months
        }

        if(isset($recurrence->recur["weekdays"]))
            $syncRecurrence->dayofweek = $recurrence->recur["weekdays"]; // bitmask of days (1 == sunday, 128 == saturday
        if(isset($recurrence->recur["nday"]))
            $syncRecurrence->weekofmonth = $recurrence->recur["nday"]; // N'th {DAY} of {X} (0-5)
        if(isset($recurrence->recur["month"]))
            $syncRecurrence->monthofyear = (int)($recurrence->recur["month"] / (60 * 24 * 29)) + 1; // works ok due to rounding. see also $monthminutes below (1-12)
        if(isset($recurrence->recur["monthday"]))
            $syncRecurrence->dayofmonth = $recurrence->recur["monthday"]; // day of month (1-31)

        // All changed exceptions are appointments within the 'exceptions' array. They contain the same items as a normal appointment
        foreach($recurrence->recur["changed_occurences"] as $change) {
            $exception = new SyncAppointmentException();

            // start, end, basedate, subject, remind_before, reminderset, location, busystatus, alldayevent, label
            if(isset($change["start"]))
                $exception->starttime = $this->getGMTTimeByTZ($change["start"], $tz);
            if(isset($change["end"]))
                $exception->endtime = $this->getGMTTimeByTZ($change["end"], $tz);
            if(isset($change["basedate"])) {
                $exception->exceptionstarttime = $this->getGMTTimeByTZ($this->getDayStartOfTimestamp($change["basedate"]) + $recurrence->recur["startocc"] * 60, $tz);

                //open body because getting only property might not work because of memory limit
                $exceptionatt = $recurrence->getExceptionAttachment($change["basedate"]);
                if($exceptionatt) {
                    $exceptionobj = mapi_attach_openobj($exceptionatt, 0);
                    $this->setMessageBodyForType($exceptionobj, SYNC_BODYPREFERENCE_PLAIN, $exception);
                }
            }
            if(isset($change["subject"]))
                $exception->subject = w2u($change["subject"]);
            if(isset($change["reminder_before"]) && $change["reminder_before"])
                $exception->reminder = $change["remind_before"];
            if(isset($change["location"]))
                $exception->location = w2u($change["location"]);
            if(isset($change["busystatus"]))
                $exception->busystatus = $change["busystatus"];
            if(isset($change["alldayevent"]))
                $exception->alldayevent = $change["alldayevent"];

            // set some data from the original appointment
            if (isset($syncMessage->uid))
                $exception->uid = $syncMessage->uid;
            if (isset($syncMessage->organizername))
                $exception->organizername = $syncMessage->organizername;
            if (isset($syncMessage->organizeremail))
                $exception->organizeremail = $syncMessage->organizeremail;

            if(!isset($syncMessage->exceptions))
                $syncMessage->exceptions = array();

            // If the user is working from a location other than the office the busystatus should be interpreted as free.
            if (isset($exception->busystatus) && $exception->busystatus == fbWorkingElsewhere) {
                $exception->busystatus = fbFree;
            }

            // If the busystatus has the value of -1, we should be interpreted as tentative (1) / ZP-581
            if (isset($exception->busystatus) && $exception->busystatus == -1) {
                $exception->busystatus = fbTentative;
            }

            // if an exception lasts 24 hours and the series are an allday events, set also the exception to allday event,
            // otherwise it will be a 24 hour long event on some mobiles.
            // @see https://jira.z-hub.io/browse/ZP-980
            if (isset($exception->starttime, $exception->endtime) && ($exception->endtime - $exception->starttime == 86400) && $syncMessage->alldayevent) {
                $exception->alldayevent = 1;
            }
            array_push($syncMessage->exceptions, $exception);
        }

        // Deleted appointments contain only the original date (basedate) and a 'deleted' tag
        foreach($recurrence->recur["deleted_occurences"] as $deleted) {
            $exception = new SyncAppointmentException();

            $exception->exceptionstarttime = $this->getGMTTimeByTZ($this->getDayStartOfTimestamp($deleted) + $recurrence->recur["startocc"] * 60, $tz);
            $exception->deleted = "1";

            if(!isset($syncMessage->exceptions))
                $syncMessage->exceptions = array();

            array_push($syncMessage->exceptions, $exception);
        }

        if (isset($syncMessage->complete) && $syncMessage->complete) {
            $syncRecurrence->complete = $syncMessage->complete;
        }
    }

    /**
     * Reads an email object from MAPI
     *
     * @param mixed             $mapimessage
     * @param ContentParameters $contentparameters
     *
     * @access private
     * @return SyncEmail
     */
    private function getEmail($mapimessage, $contentparameters) {
        // This workaround fixes ZP-729 and still works with Outlook.
        // FIXME: It should be properly fixed when refactoring.
        $bpReturnType = Utils::GetBodyPreferenceBestMatch($contentparameters->GetBodyPreference());
        if (($contentparameters->GetMimeSupport() == SYNC_MIMESUPPORT_NEVER) ||
                ($key = array_search(SYNC_BODYPREFERENCE_MIME, $contentparameters->GetBodyPreference()) === false) ||
                $bpReturnType != SYNC_BODYPREFERENCE_MIME) {
            MAPIUtils::ParseSmime($this->session, $this->store, $this->getAddressbook(), $mapimessage);
        }

        $message = new SyncMail();

        $this->getPropsFromMAPI($message, $mapimessage, MAPIMapping::GetEmailMapping());

        $emailproperties = MAPIMapping::GetEmailProperties();
        $messageprops = $this->getProps($mapimessage, $emailproperties);

        if(isset($messageprops[PR_SOURCE_KEY]))
            $sourcekey = $messageprops[PR_SOURCE_KEY];
        else
            return false;

        //set the body according to contentparameters and supported AS version
        $this->setMessageBody($mapimessage, $contentparameters, $message);

        $fromname = $fromaddr = "";

        if(isset($messageprops[$emailproperties["representingname"]])) {
            // remove encapsulating double quotes from the representingname
            $fromname = preg_replace('/^\"(.*)\"$/',"\${1}", $messageprops[$emailproperties["representingname"]]);
        }
        if(isset($messageprops[$emailproperties["representingentryid"]]))
            $fromaddr = $this->getSMTPAddressFromEntryID($messageprops[$emailproperties["representingentryid"]]);

        // if the email address can't be resolved, fall back to PR_SENT_REPRESENTING_SEARCH_KEY
        if ($fromaddr == "" && isset($messageprops[$emailproperties["representingsearchkey"]])) {
            $fromaddr = $this->getEmailAddressFromSearchKey($messageprops[$emailproperties["representingsearchkey"]]);
        }

        if($fromname == $fromaddr)
            $fromname = "";

        if($fromname)
            $from = "\"" . w2u($fromname) . "\" <" . w2u($fromaddr) . ">";
        else
            //START CHANGED dw2412 HTC shows "error" if sender name is unknown
            $from = "\"" . w2u($fromaddr) . "\" <" . w2u($fromaddr) . ">";
            //END CHANGED dw2412 HTC shows "error" if sender name is unknown

        $message->from = $from;

        // process Meeting Requests
        if(isset($message->messageclass) && strpos($message->messageclass, "IPM.Schedule.Meeting") === 0) {
            $message->meetingrequest = new SyncMeetingRequest();
            $this->getPropsFromMAPI($message->meetingrequest, $mapimessage, MAPIMapping::GetMeetingRequestMapping());

            $meetingrequestproperties = MAPIMapping::GetMeetingRequestProperties();
            $props = $this->getProps($mapimessage, $meetingrequestproperties);

            // Get the GOID
            if(isset($props[$meetingrequestproperties["goidtag"]]))
                $message->meetingrequest->globalobjid = base64_encode($props[$meetingrequestproperties["goidtag"]]);

            // Set Timezone
            if (isset($props[$meetingrequestproperties["timezonetag"]])) {
                $tz = $this->getTZFromMAPIBlob($props[$meetingrequestproperties["timezonetag"]]);
            }
            else {
                $tz = TimezoneUtil::GetFullTZ();
            }

            $message->meetingrequest->timezone = base64_encode(TimezoneUtil::GetSyncBlobFromTZ($tz));

            // send basedate if exception
            if(isset($props[$meetingrequestproperties["recReplTime"]]) ||
                (isset($props[$meetingrequestproperties["lidIsException"]]) && $props[$meetingrequestproperties["lidIsException"]] == true)) {
                if (isset($props[$meetingrequestproperties["recReplTime"]])){
                    $basedate = $props[$meetingrequestproperties["recReplTime"]];
                    $message->meetingrequest->recurrenceid = $this->getGMTTimeByTZ($basedate, $this->getGMTTZ());
                }
                else {
                    if (!isset($props[$meetingrequestproperties["goidtag"]]) || !isset($props[$meetingrequestproperties["recurStartTime"]]) || !isset($props[$meetingrequestproperties["timezonetag"]]))
                        ZLog::Write(LOGLEVEL_WARN, "Missing property to set correct basedate for exception");
                    else {
                        $basedate = Utils::ExtractBaseDate($props[$meetingrequestproperties["goidtag"]], $props[$meetingrequestproperties["recurStartTime"]]);
                        $message->meetingrequest->recurrenceid = $this->getGMTTimeByTZ($basedate, $tz);
                    }
                }
            }

            // Organizer is the sender
            if (strpos($message->messageclass, "IPM.Schedule.Meeting.Resp") === 0) {
                $message->meetingrequest->organizer = $message->to;
            }
            else {
                $message->meetingrequest->organizer = $message->from;
            }

            // Process recurrence
            if(isset($props[$meetingrequestproperties["isrecurringtag"]]) && $props[$meetingrequestproperties["isrecurringtag"]]) {
                $myrec = new SyncMeetingRequestRecurrence();
                // get recurrence -> put $message->meetingrequest as message so the 'alldayevent' is set correctly
                $this->getRecurrence($mapimessage, $props, $message->meetingrequest, $myrec, $tz);
                $message->meetingrequest->recurrences = array($myrec);
            }

            // Force the 'alldayevent' in the object at all times. (non-existent == 0)
            if(!isset($message->meetingrequest->alldayevent) || $message->meetingrequest->alldayevent == "")
                $message->meetingrequest->alldayevent = 0;

            // Instancetype
            // 0 = single appointment
            // 1 = master recurring appointment
            // 2 = single instance of recurring appointment
            // 3 = exception of recurring appointment
            $message->meetingrequest->instancetype = 0;
            if (isset($props[$meetingrequestproperties["isrecurringtag"]]) && $props[$meetingrequestproperties["isrecurringtag"]] == 1)
                $message->meetingrequest->instancetype = 1;
            else if ((!isset($props[$meetingrequestproperties["isrecurringtag"]]) || $props[$meetingrequestproperties["isrecurringtag"]] == 0 )&& isset($message->meetingrequest->recurrenceid))
                if (isset($props[$meetingrequestproperties["appSeqNr"]]) && $props[$meetingrequestproperties["appSeqNr"]] == 0 )
                    $message->meetingrequest->instancetype = 2;
                else
                    $message->meetingrequest->instancetype = 3;

            // Disable reminder if it is off
            if(!isset($props[$meetingrequestproperties["reminderset"]]) || $props[$meetingrequestproperties["reminderset"]] == false)
                $message->meetingrequest->reminder = "";
            //the property saves reminder in minutes, but we need it in secs
            else {
                ///set the default reminder time to seconds
                if ($props[$meetingrequestproperties["remindertime"]] == 0x5AE980E1)
                    $message->meetingrequest->reminder = 900;
                else
                    $message->meetingrequest->reminder = $props[$meetingrequestproperties["remindertime"]] * 60;
            }

            // Set sensitivity to 0 if missing
            if(!isset($message->meetingrequest->sensitivity))
                $message->meetingrequest->sensitivity = 0;

            // If the user is working from a location other than the office the busystatus should be interpreted as free.
            if (isset($message->meetingrequest->busystatus) && $message->meetingrequest->busystatus == fbWorkingElsewhere) {
                $message->meetingrequest->busystatus = fbFree;
            }

            // If the busystatus has the value of -1, we should be interpreted as tentative (1) / ZP-581
            if (isset($message->meetingrequest->busystatus) && $message->meetingrequest->busystatus == -1) {
                $message->meetingrequest->busystatus = fbTentative;
            }

            // if a meeting request response hasn't been processed yet,
            // do it so that the attendee status is updated on the mobile
            if(!isset($messageprops[$emailproperties["processed"]])) {
                // check if we are not sending the MR so we can process it - ZP-581
                $cuser = ZPush::GetBackend()->GetUserDetails(ZPush::GetBackend()->GetCurrentUsername());
                if(isset($cuser["emailaddress"]) && $cuser["emailaddress"] != $fromaddr) {
                    if (!isset($req)) {
                        $req = new Meetingrequest($this->store, $mapimessage, $this->session);
                    }
                    if ($req->isMeetingRequestResponse()) {
                        $req->processMeetingRequestResponse();
                    }
                    if ($req->isMeetingCancellation()) {
                        $req->processMeetingCancellation();
                    }
                }
            }
            $message->contentclass = DEFAULT_CALENDAR_CONTENTCLASS;

            // MeetingMessageType values
            // 0 = A silent update was performed, or the message type is unspecified.
            // 1 = Initial meeting request.
            // 2 = Full update.
            // 3 = Informational update.
            // 4 = Outdated. A newer meeting request or meeting update was received after this message.
            // 5 = Identifies the delegator's copy of the meeting request.
            // 6 = Identifies that the meeting request has been delegated and the meeting request cannot be responded to.
            $message->meetingrequest->meetingmessagetype = mtgEmpty;

            if (isset($props[$meetingrequestproperties["meetingType"]])) {
                switch ($props[$meetingrequestproperties["meetingType"]]) {
                    case mtgRequest:
                        $message->meetingrequest->meetingmessagetype = 1;
                        break;
                    case mtgFull:
                        $message->meetingrequest->meetingmessagetype = 2;
                        break;
                    case mtgInfo:
                        $message->meetingrequest->meetingmessagetype = 3;
                        break;
                    case mtgOutOfDate:
                        $message->meetingrequest->meetingmessagetype = 4;
                        break;
                    case mtgDelegatorCopy:
                        $message->meetingrequest->meetingmessagetype = 5;
                        break;
                }
            }
        }

        // Add attachments
        $attachtable = mapi_message_getattachmenttable($mapimessage);
        $rows = mapi_table_queryallrows($attachtable, array(PR_ATTACH_NUM));
        $entryid = bin2hex($messageprops[$emailproperties["entryid"]]);
        $parentSourcekey = bin2hex($messageprops[$emailproperties["parentsourcekey"]]);

        foreach($rows as $row) {
            if(isset($row[PR_ATTACH_NUM])) {
                if (Request::GetProtocolVersion() >= 12.0) {
                    $attach = new SyncBaseAttachment();
                }
                else {
                    $attach = new SyncAttachment();
                }

                $mapiattach = mapi_message_openattach($mapimessage, $row[PR_ATTACH_NUM]);
                $attachprops = mapi_getprops($mapiattach, array(PR_ATTACH_LONG_FILENAME, PR_ATTACH_FILENAME, PR_ATTACHMENT_HIDDEN, PR_ATTACH_CONTENT_ID, PR_ATTACH_CONTENT_ID_W, PR_ATTACH_MIME_TAG, PR_ATTACH_MIME_TAG_W, PR_ATTACH_METHOD, PR_DISPLAY_NAME, PR_DISPLAY_NAME_W, PR_ATTACH_SIZE));
                if ((isset($attachprops[PR_ATTACH_MIME_TAG]) && strpos(strtolower($attachprops[PR_ATTACH_MIME_TAG]), 'signed') !== false) ||
                    (isset($attachprops[PR_ATTACH_MIME_TAG_W]) && strpos(strtolower($attachprops[PR_ATTACH_MIME_TAG_W]), 'signed') !== false)) {
                    continue;
                }

                // the displayname is handled equaly for all AS versions
                $attach->displayname = w2u((isset($attachprops[PR_ATTACH_LONG_FILENAME])) ? $attachprops[PR_ATTACH_LONG_FILENAME] : ((isset($attachprops[PR_ATTACH_FILENAME])) ? $attachprops[PR_ATTACH_FILENAME] : ((isset($attachprops[PR_DISPLAY_NAME])) ? $attachprops[PR_DISPLAY_NAME] : "attachment.bin")));
                // fix attachment name in case of inline images
                if ($attach->displayname == "inline.txt" && (isset($attachprops[PR_ATTACH_MIME_TAG]) || $attachprops[PR_ATTACH_MIME_TAG_W])) {
                    $mimetype = (isset($attachprops[PR_ATTACH_MIME_TAG])) ? $attachprops[PR_ATTACH_MIME_TAG]:$attachprops[PR_ATTACH_MIME_TAG_W];
                    $mime = explode("/", $mimetype);

                    if (count($mime) == 2 && $mime[0] == "image") {
                        $attach->displayname = "inline." . $mime[1];
                    }
                }

                // set AS version specific parameters
                if (Request::GetProtocolVersion() >= 12.0) {
                    $attach->filereference = sprintf("%s:%s:%s", $entryid, $row[PR_ATTACH_NUM], $parentSourcekey);
                    $attach->method = (isset($attachprops[PR_ATTACH_METHOD])) ? $attachprops[PR_ATTACH_METHOD] : ATTACH_BY_VALUE;

                    // if displayname does not have the eml extension for embedde messages, android and WP devices won't open it
                    if ($attach->method == ATTACH_EMBEDDED_MSG) {
                        if (strtolower(substr($attach->displayname, -4)) != '.eml')
                            $attach->displayname .= '.eml';
                    }
                    // android devices require attachment size in order to display an attachment properly
                    if (!isset($attachprops[PR_ATTACH_SIZE])) {
                        $stream = mapi_openproperty($mapiattach, PR_ATTACH_DATA_BIN, IID_IStream, 0, 0);
                        // It's not possible to open some (embedded only?) messages, so we need to open the attachment object itself to get the data
                        if (mapi_last_hresult()) {
                            $embMessage = mapi_attach_openobj($mapiattach);
                            $addrbook = $this->getAddressbook();
                            $stream = mapi_inetmapi_imtoinet($this->session, $addrbook, $embMessage, array('use_tnef' => -1));
                        }
                        $stat = mapi_stream_stat($stream);
                        $attach->estimatedDataSize = $stat['cb'];
                    }
                    else {
                        $attach->estimatedDataSize = $attachprops[PR_ATTACH_SIZE];
                    }

                    if (isset($attachprops[PR_ATTACH_CONTENT_ID]) && $attachprops[PR_ATTACH_CONTENT_ID])
                        $attach->contentid = $attachprops[PR_ATTACH_CONTENT_ID];

                    if (!isset($attach->contentid) && isset($attachprops[PR_ATTACH_CONTENT_ID_W]) && $attachprops[PR_ATTACH_CONTENT_ID_W])
                        $attach->contentid = $attachprops[PR_ATTACH_CONTENT_ID_W];

                    if (isset($attachprops[PR_ATTACHMENT_HIDDEN]) && $attachprops[PR_ATTACHMENT_HIDDEN]) $attach->isinline = 1;

                    if(!isset($message->asattachments))
                        $message->asattachments = array();

                    array_push($message->asattachments, $attach);
                }
                else {
                    $attach->attsize = $attachprops[PR_ATTACH_SIZE];
                    $attach->attname = sprintf("%s:%s:%s", $entryid, $row[PR_ATTACH_NUM], $parentSourcekey);
                    if(!isset($message->attachments))
                        $message->attachments = array();

                    array_push($message->attachments, $attach);
                }
            }
        }

        // Get To/Cc as SMTP addresses (this is different from displayto and displaycc because we are putting
        // in the SMTP addresses as well, while displayto and displaycc could just contain the display names
        $message->to = array();
        $message->cc = array();

        $reciptable = mapi_message_getrecipienttable($mapimessage);
        $rows = mapi_table_queryallrows($reciptable, array(PR_RECIPIENT_TYPE, PR_DISPLAY_NAME, PR_ADDRTYPE, PR_EMAIL_ADDRESS, PR_SMTP_ADDRESS, PR_ENTRYID, PR_SEARCH_KEY));

        foreach ($rows as $row) {
            $address = "";
            $fulladdr = "";

            $addrtype = isset($row[PR_ADDRTYPE]) ? $row[PR_ADDRTYPE] : "";

            if (isset($row[PR_SMTP_ADDRESS]))
                $address = $row[PR_SMTP_ADDRESS];
            elseif ($addrtype == "SMTP" && isset($row[PR_EMAIL_ADDRESS]))
                $address = $row[PR_EMAIL_ADDRESS];
            elseif ($addrtype == "ZARAFA" && isset($row[PR_ENTRYID]))
                $address = $this->getSMTPAddressFromEntryID($row[PR_ENTRYID]);

            // if the user was not found, do a fallback to PR_SEARCH_KEY
            // @see https://jira.z-hub.io/browse/ZP-1178
            if (empty($address) && isset($row[PR_SEARCH_KEY])) {
                $address = $this->getEmailAddressFromSearchKey($row[PR_SEARCH_KEY]);
            }

            $name = isset($row[PR_DISPLAY_NAME]) ? $row[PR_DISPLAY_NAME] : "";

            if($name == "" || $name == $address)
                $fulladdr = w2u($address);
            else {
                if (substr($name, 0, 1) != '"' && substr($name, -1) != '"') {
                    $fulladdr = "\"" . w2u($name) ."\" <" . w2u($address) . ">";
                }
                else {
                    $fulladdr = w2u($name) ."<" . w2u($address) . ">";
                }
            }

            if($row[PR_RECIPIENT_TYPE] == MAPI_TO) {
                array_push($message->to, $fulladdr);
            } else if($row[PR_RECIPIENT_TYPE] == MAPI_CC) {
                array_push($message->cc, $fulladdr);
            }
        }

        if (is_array($message->to) && !empty($message->to)) $message->to = implode(", ", $message->to);
        if (is_array($message->cc) && !empty($message->cc)) $message->cc = implode(", ", $message->cc);

        // without importance some mobiles assume "0" (low) - Mantis #439
        if (!isset($message->importance))
            $message->importance = IMPORTANCE_NORMAL;

        if (!isset($message->internetcpid)) $message->internetcpid = (defined('STORE_INTERNET_CPID')) ? constant('STORE_INTERNET_CPID') : INTERNET_CPID_WINDOWS1252;
        $this->setFlag($mapimessage, $message);
        //TODO checkcontentclass
        if (!isset($message->contentclass)) $message->contentclass = DEFAULT_EMAIL_CONTENTCLASS;

        if (!isset($message->nativebodytype)) {
            $message->nativebodytype = MAPIUtils::GetNativeBodyType($messageprops);
        }
        elseif ($message->nativebodytype == SYNC_BODYPREFERENCE_UNDEFINED) {
            $nbt = MAPIUtils::GetNativeBodyType($messageprops);
            ZLog::Write(LOGLEVEL_INFO, sprintf("MAPIProvider->getEmail(): native body type is undefined. Set it to %d.", $nbt));
            $message->nativebodytype = $nbt;
        }

        // reply, reply to all, forward flags
        if (isset($message->lastverbexecuted) && $message->lastverbexecuted) {
            $message->lastverbexecuted = Utils::GetLastVerbExecuted($message->lastverbexecuted);
        }

        return $message;
    }

    /**
    * Reads a note object from MAPI
    *
    * @param mixed             $mapimessage
    * @param ContentParameters $contentparameters
    *
    * @access private
    * @return SyncNote
    */
    private function getNote($mapimessage, $contentparameters) {
        $message = new SyncNote();

        // Standard one-to-one mappings first
        $this->getPropsFromMAPI($message, $mapimessage, MAPIMapping::GetNoteMapping());

        //set the body according to contentparameters and supported AS version
        $this->setMessageBody($mapimessage, $contentparameters, $message);

        return $message;
    }

    /**
     * Creates a SyncFolder from MAPI properties.
     *
     * @param mixed             $folderprops
     *
     * @access public
     * @return SyncFolder
     */
    public function GetFolder($folderprops) {
        $folder = new SyncFolder();

        $storeprops = $this->GetStoreProps();

        // For ZCP 7.0.x we need to retrieve more properties explicitly, see ZP-780
        if (isset($folderprops[PR_SOURCE_KEY]) && !isset($folderprops[PR_ENTRYID]) && !isset($folderprops[PR_CONTAINER_CLASS])) {
            $entryid = mapi_msgstore_entryidfromsourcekey($this->store, $folderprops[PR_SOURCE_KEY]);
            $mapifolder = mapi_msgstore_openentry($this->store, $entryid);
            $folderprops = mapi_getprops($mapifolder, array(PR_DISPLAY_NAME, PR_PARENT_ENTRYID, PR_ENTRYID, PR_SOURCE_KEY, PR_PARENT_SOURCE_KEY, PR_CONTAINER_CLASS, PR_ATTR_HIDDEN, PR_EXTENDED_FOLDER_FLAGS));
            ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->GetFolder(): received insuffient of data from ICS. Fetching required data.");
        }

        if(!isset($folderprops[PR_DISPLAY_NAME]) ||
           !isset($folderprops[PR_PARENT_ENTRYID]) ||
           !isset($folderprops[PR_SOURCE_KEY]) ||
           !isset($folderprops[PR_ENTRYID]) ||
           !isset($folderprops[PR_PARENT_SOURCE_KEY]) ||
           !isset($storeprops[PR_IPM_SUBTREE_ENTRYID])) {
            ZLog::Write(LOGLEVEL_ERROR, "MAPIProvider->GetFolder(): invalid folder. Missing properties");
            return false;
        }

        // ignore hidden folders
        if (isset($folderprops[PR_ATTR_HIDDEN]) && $folderprops[PR_ATTR_HIDDEN] != false) {
            ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->GetFolder(): invalid folder '%s' as it is a hidden folder (PR_ATTR_HIDDEN)", $folderprops[PR_DISPLAY_NAME]));
            return false;
        }

        // ignore certain undesired folders, like "RSS Feeds" and "Suggested contacts"
        if ((isset($folderprops[PR_CONTAINER_CLASS]) && $folderprops[PR_CONTAINER_CLASS] == "IPF.Note.OutlookHomepage")
                || in_array($folderprops[PR_ENTRYID], $this->getSpecialFoldersData())) {
            ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->GetFolder(): folder '%s' should not be synchronized", $folderprops[PR_DISPLAY_NAME]));
            return false;
        }

        $folder->BackendId = bin2hex($folderprops[PR_SOURCE_KEY]);
        $folderOrigin = DeviceManager::FLD_ORIGIN_USER;
        if (ZPush::GetBackend()->GetImpersonatedUser()) {
            $folderOrigin = DeviceManager::FLD_ORIGIN_IMPERSONATED;
        }
        $folder->serverid = ZPush::GetDeviceManager()->GetFolderIdForBackendId($folder->BackendId, true, $folderOrigin, $folderprops[PR_DISPLAY_NAME]);
        if($folderprops[PR_PARENT_ENTRYID] == $storeprops[PR_IPM_SUBTREE_ENTRYID] || $folderprops[PR_PARENT_ENTRYID] == $storeprops[PR_IPM_PUBLIC_FOLDERS_ENTRYID]) {
            $folder->parentid = "0";
        }
        else {
            $folder->parentid = ZPush::GetDeviceManager()->GetFolderIdForBackendId(bin2hex($folderprops[PR_PARENT_SOURCE_KEY]));
        }
        $folder->displayname = w2u($folderprops[PR_DISPLAY_NAME]);
        $folder->type = $this->GetFolderType($folderprops[PR_ENTRYID], isset($folderprops[PR_CONTAINER_CLASS])?$folderprops[PR_CONTAINER_CLASS]:false);

        return $folder;
    }

    /**
     * Returns the foldertype for an entryid
     * Gets the folder type by checking the default folders in MAPI
     *
     * @param string            $entryid
     * @param string            $class      (opt)
     *
     * @access public
     * @return long
     */
    public function GetFolderType($entryid, $class = false) {
        $storeprops = $this->GetStoreProps();
        $inboxprops = $this->getInboxProps();

        if($entryid == $storeprops[PR_IPM_WASTEBASKET_ENTRYID])
            return SYNC_FOLDER_TYPE_WASTEBASKET;
        if($entryid == $storeprops[PR_IPM_SENTMAIL_ENTRYID])
            return SYNC_FOLDER_TYPE_SENTMAIL;
        if($entryid == $storeprops[PR_IPM_OUTBOX_ENTRYID])
            return SYNC_FOLDER_TYPE_OUTBOX;

        // Public folders do not have inboxprops
        // @see https://jira.z-hub.io/browse/ZP-995
        if (!empty($inboxprops)) {
            if($entryid == $inboxprops[PR_ENTRYID])
                return SYNC_FOLDER_TYPE_INBOX;
            if($entryid == $inboxprops[PR_IPM_DRAFTS_ENTRYID])
                return SYNC_FOLDER_TYPE_DRAFTS;
            if($entryid == $inboxprops[PR_IPM_TASK_ENTRYID])
                return SYNC_FOLDER_TYPE_TASK;
            if($entryid == $inboxprops[PR_IPM_APPOINTMENT_ENTRYID])
                return SYNC_FOLDER_TYPE_APPOINTMENT;
            if($entryid == $inboxprops[PR_IPM_CONTACT_ENTRYID])
                return SYNC_FOLDER_TYPE_CONTACT;
            if($entryid == $inboxprops[PR_IPM_NOTE_ENTRYID])
                return SYNC_FOLDER_TYPE_NOTE;
            if($entryid == $inboxprops[PR_IPM_JOURNAL_ENTRYID])
                return SYNC_FOLDER_TYPE_JOURNAL;
        }

        // user created folders
        if ($class == "IPF.Note")
            return SYNC_FOLDER_TYPE_USER_MAIL;
        if ($class == "IPF.Task")
            return SYNC_FOLDER_TYPE_USER_TASK;
        if ($class == "IPF.Appointment")
            return SYNC_FOLDER_TYPE_USER_APPOINTMENT;
        if ($class == "IPF.Contact")
            return SYNC_FOLDER_TYPE_USER_CONTACT;
        if ($class == "IPF.StickyNote")
            return SYNC_FOLDER_TYPE_USER_NOTE;
        if ($class == "IPF.Journal")
            return  SYNC_FOLDER_TYPE_USER_JOURNAL;

        return SYNC_FOLDER_TYPE_OTHER;
    }

    /**
     * Indicates if the entry id is a default MAPI folder
     *
     * @param string            $entryid
     *
     * @access public
     * @return boolean
     */
    public function IsMAPIDefaultFolder($entryid) {
        $msgstore_props = mapi_getprops($this->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_MAILBOX_OWNER_ENTRYID));

        $inboxProps = array();
        $inbox = mapi_msgstore_getreceivefolder($this->store);
        if(!mapi_last_hresult())
            $inboxProps = mapi_getprops($inbox, array(PR_ENTRYID));

        $root = mapi_msgstore_openentry($this->store, null); // TODO use getRootProps()
        $rootProps = mapi_getprops($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(
                        "inbox"                 =>      array("inbox"=>PR_ENTRYID),
                        "outbox"                =>      array("store"=>PR_IPM_OUTBOX_ENTRYID),
                        "sent"                  =>      array("store"=>PR_IPM_SENTMAIL_ENTRYID),
                        "wastebasket"           =>      array("store"=>PR_IPM_WASTEBASKET_ENTRYID),
                        "favorites"             =>      array("store"=>PR_IPM_FAVORITES_ENTRYID),
                        "publicfolders"         =>      array("store"=>PR_IPM_PUBLIC_FOLDERS_ENTRYID),
                        "calendar"              =>      array("root" =>PR_IPM_APPOINTMENT_ENTRYID),
                        "contact"               =>      array("root" =>PR_IPM_CONTACT_ENTRYID),
                        "drafts"                =>      array("root" =>PR_IPM_DRAFTS_ENTRYID),
                        "journal"               =>      array("root" =>PR_IPM_JOURNAL_ENTRYID),
                        "note"                  =>      array("root" =>PR_IPM_NOTE_ENTRYID),
                        "task"                  =>      array("root" =>PR_IPM_TASK_ENTRYID),
                        "junk"                  =>      array("additional" =>4),
                        "syncissues"            =>      array("additional" =>1),
                        "conflicts"             =>      array("additional" =>0),
                        "localfailures"         =>      array("additional" =>2),
                        "serverfailures"        =>      array("additional" =>3),
        );

        foreach($defaultfolders as $key=>$prop){
            $tag = reset($prop);
            $from = key($prop);
            switch($from){
                case "inbox":
                    if(isset($inboxProps[$tag]) && $entryid == $inboxProps[$tag]) {
                        ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->IsMAPIFolder(): Inbox found, key '%s'", $key));
                        return true;
                    }
                    break;
                case "store":
                    if(isset($msgstore_props[$tag]) && $entryid == $msgstore_props[$tag]) {
                        ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->IsMAPIFolder(): Store folder found, key '%s'", $key));
                        return true;
                    }
                    break;
                case "root":
                    if(isset($rootProps[$tag]) && $entryid == $rootProps[$tag]) {
                        ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->IsMAPIFolder(): Root folder found, key '%s'", $key));
                        return true;
                    }
                    break;
                case "additional":
                    if(isset($additional_ren_entryids[$tag]) && $entryid == $additional_ren_entryids[$tag]) {
                        ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->IsMAPIFolder(): Additional folder found, key '%s'", $key));
                        return true;
                    }
            }
        }
        return false;
    }

    /**----------------------------------------------------------------------------------------------------------
     * SETTER
     */

    /**
     * Writes a SyncObject to MAPI
     * Depending on the message class, a contact, appointment, task or email is written
     *
     * @param mixed             $mapimessage
     * @param SyncObject        $message
     *
     * @access public
     * @return boolean
     */
    public function SetMessage($mapimessage, $message) {
        // TODO check with instanceof
        switch(strtolower(get_class($message))) {
            case "synccontact":
                return $this->setContact($mapimessage, $message);
            case "syncappointment":
                return $this->setAppointment($mapimessage, $message);
            case "synctask":
                return $this->setTask($mapimessage, $message);
            case "syncnote":
                return $this->setNote($mapimessage, $message);
            default:
                //for emails only flag (read and todo) changes are possible
                return $this->setEmail($mapimessage, $message);
        }
    }

    /**
     * Writes SyncMail to MAPI (actually flags only)
     *
     * @param mixed             $mapimessage
     * @param SyncMail          $message
     */
    private function setEmail($mapimessage, $message) {
        // update categories
        if (!isset($message->categories)) $message->categories = array();
        $emailmap = MAPIMapping::GetEmailMapping();
        $this->setPropsInMAPI($mapimessage, $message, array("categories" => $emailmap["categories"]));

        $flagmapping = MAPIMapping::GetMailFlagsMapping();
        $flagprops = MAPIMapping::GetMailFlagsProperties();
        $flagprops = array_merge($this->getPropIdsFromStrings($flagmapping), $this->getPropIdsFromStrings($flagprops));
        // flag specific properties to be set
        $props = $delprops = array();
        // unset message flags if:
        // flag is not set
        if (empty($message->flag) ||
            // flag status is not set
            !isset($message->flag->flagstatus) ||
            // flag status is 0 or empty
            (isset($message->flag->flagstatus) && ($message->flag->flagstatus == 0 || $message->flag->flagstatus == "")) ) {
            // if message flag is empty, some properties need to be deleted
            // and some set to 0 or false

            $props[$flagprops["todoitemsflags"]] = 0;
            $props[$flagprops["status"]] = 0;
            $props[$flagprops["completion"]] = 0.0;
            $props[$flagprops["flagtype"]] = "";
            $props[$flagprops["ordinaldate"]] = 0x7fffffff; // ordinal date is 12am 1.1.4501, set it to max possible value
            $props[$flagprops["subordinaldate"]] = "";
            $props[$flagprops["replyrequested"]] = false;
            $props[$flagprops["responserequested"]] = false;
            $props[$flagprops["reminderset"]] = false;
            $props[$flagprops["complete"]] = false;

            $delprops[] = $flagprops["todotitle"];
            $delprops[] = $flagprops["duedate"];
            $delprops[] = $flagprops["startdate"];
            $delprops[] = $flagprops["datecompleted"];
            $delprops[] = $flagprops["utcstartdate"];
            $delprops[] = $flagprops["utcduedate"];
            $delprops[] = $flagprops["completetime"];
            $delprops[] = $flagprops["flagstatus"];
            $delprops[] = $flagprops["flagicon"];
        }
        else {
            $this->setPropsInMAPI($mapimessage, $message->flag, $flagmapping);
            $props[$flagprops["todoitemsflags"]] = 1;
            if (isset($message->subject) && str_len($message->subject) > 0)
                $props[$flagprops["todotitle"]] = $message->subject;
            // ordinal date is utc current time
            if (!isset($message->flag->ordinaldate) || empty($message->flag->ordinaldate)) {
                $props[$flagprops["ordinaldate"]] = time();
            }
            // the default value
            if (!isset($message->flag->subordinaldate) || empty($message->flag->subordinaldate)) {
                $props[$flagprops["subordinaldate"]] = "5555555";
            }
            $props[$flagprops["flagicon"]] = 6; //red flag icon
            $props[$flagprops["replyrequested"]] = true;
            $props[$flagprops["responserequested"]] = true;

            if ($message->flag->flagstatus == SYNC_FLAGSTATUS_COMPLETE) {
                $props[$flagprops["status"]] = olTaskComplete;
                $props[$flagprops["completion"]] = 1.0;
                $props[$flagprops["complete"]] = true;
                $props[$flagprops["replyrequested"]] = false;
                $props[$flagprops["responserequested"]] = false;
                unset($props[$flagprops["flagicon"]]);
                $delprops[] = $flagprops["flagicon"];
            }
        }

        if (!empty($props)) {
            mapi_setprops($mapimessage, $props);
        }
        if (!empty($delprops)) {
            mapi_deleteprops($mapimessage, $delprops);
        }
    }

    /**
     * Writes a SyncAppointment to MAPI
     *
     * @param mixed             $mapimessage
     * @param SyncAppointment   $message
     *
     * @access private
     * @return boolean
     */
    private function setAppointment($mapimessage, $appointment) {
        // Get timezone info
        if(isset($appointment->timezone))
            $tz = $this->getTZFromSyncBlob(base64_decode($appointment->timezone));
        else
            $tz = false;

        // start and end time may not be set - try to get them from the existing appointment for further calculation - see https://jira.z-hub.io/browse/ZP-983
        if (!isset($appointment->starttime) || !isset($appointment->endtime)) {
            $amapping = MAPIMapping::GetAppointmentMapping();
            $amapping = $this->getPropIdsFromStrings($amapping);
            $existingstartendpropsmap = array($amapping["starttime"], $amapping["endtime"]);
            $existingstartendprops = $this->getProps($mapimessage, $existingstartendpropsmap);

            if (isset($existingstartendprops[$amapping["starttime"]]) && !isset($appointment->starttime)) {
                $appointment->starttime = $existingstartendprops[$amapping["starttime"]];
                ZLog::Write(LOGLEVEL_WBXML, sprintf("MAPIProvider->setAppointment(): Parameter 'starttime' was not set, using value from MAPI %d (%s).", $appointment->starttime, gmstrftime("%Y%m%dT%H%M%SZ", $appointment->starttime)));
            }
            if (isset($existingstartendprops[$amapping["endtime"]]) && !isset($appointment->endtime)) {
                $appointment->endtime = $existingstartendprops[$amapping["endtime"]];
                ZLog::Write(LOGLEVEL_WBXML, sprintf("MAPIProvider->setAppointment(): Parameter 'endtime' was not set, using value from MAPI %d (%s).", $appointment->endtime, gmstrftime("%Y%m%dT%H%M%SZ", $appointment->endtime)));
            }
        }
        if (!isset($appointment->starttime) || !isset($appointment->endtime)) {
            throw new StatusException("MAPIProvider->setAppointment(): Error, start and/or end time not set and can not be retrieved from MAPI.", SYNC_STATUS_SYNCCANNOTBECOMPLETED);
        }

        //calculate duration because without it some webaccess views are broken. duration is in min
        $localstart = $this->getLocaltimeByTZ($appointment->starttime, $tz);
        $localend = $this->getLocaltimeByTZ($appointment->endtime, $tz);
        $duration = ($localend - $localstart)/60;

        //nokia sends an yearly event with 0 mins duration but as all day event,
        //so make it end next day
        if ($appointment->starttime == $appointment->endtime && isset($appointment->alldayevent) && $appointment->alldayevent) {
            $duration = 1440;
            $appointment->endtime = $appointment->starttime + 24 * 60 * 60;
            $localend = $localstart + 24 * 60 * 60;
        }

        // is the transmitted UID OL compatible?
        // if not, encapsulate the transmitted uid
        $appointment->uid = Utils::GetOLUidFromICalUid($appointment->uid);

        mapi_setprops($mapimessage, array(PR_MESSAGE_CLASS => "IPM.Appointment"));

        $appointmentmapping = MAPIMapping::GetAppointmentMapping();
        $this->setPropsInMAPI($mapimessage, $appointment, $appointmentmapping);
        $appointmentprops = MAPIMapping::GetAppointmentProperties();
        $appointmentprops = array_merge($this->getPropIdsFromStrings($appointmentmapping), $this->getPropIdsFromStrings($appointmentprops));
        //appointment specific properties to be set
        $props = array();

        //sensitivity is not enough to mark an appointment as private, so we use another mapi tag
        $private = (isset($appointment->sensitivity) && $appointment->sensitivity >= SENSITIVITY_PRIVATE) ? true : false;

        // Set commonstart/commonend to start/end and remindertime to start, duration, private and cleanGlobalObjectId
        $props[$appointmentprops["commonstart"]] = $appointment->starttime;
        $props[$appointmentprops["commonend"]] = $appointment->endtime;
        $props[$appointmentprops["reminderstart"]] = $appointment->starttime;
        // Set reminder boolean to 'true' if reminder is set
        $props[$appointmentprops["reminderset"]] = isset($appointment->reminder) ? true : false;
        $props[$appointmentprops["duration"]] = $duration;
        $props[$appointmentprops["private"]] = $private;
        $props[$appointmentprops["uid"]] = $appointment->uid;
        // Set named prop 8510, unknown property, but enables deleting a single occurrence of a recurring
        // type in OLK2003.
        $props[$appointmentprops["sideeffects"]] = 369;


        if(isset($appointment->reminder) && $appointment->reminder >= 0) {
            // Set 'flagdueby' to correct value (start - reminderminutes)
            $props[$appointmentprops["flagdueby"]] = $appointment->starttime - $appointment->reminder * 60;
            $props[$appointmentprops["remindertime"]] = $appointment->reminder;
        }
        // unset the reminder
        else {
            $props[$appointmentprops["reminderset"]] = false;
        }

        if (isset($appointment->asbody)) {
            $this->setASbody($appointment->asbody, $props, $appointmentprops);
        }

        if ($tz !== false) {
            $props[$appointmentprops["timezonetag"]] = $this->getMAPIBlobFromTZ($tz);
        }

        if(isset($appointment->recurrence)) {
            // Set PR_ICON_INDEX to 1025 to show correct icon in category view
            $props[$appointmentprops["icon"]] = 1025;

            //if there aren't any exceptions, use the 'old style' set recurrence
            $noexceptions = true;

            $recurrence = new Recurrence($this->store, $mapimessage);
            $recur = array();
            $this->setRecurrence($appointment, $recur);

            // set the recurrence type to that of the MAPI
            $props[$appointmentprops["recurrencetype"]] = $recur["recurrencetype"];

            $starttime = $this->gmtime($localstart);
            $endtime = $this->gmtime($localend);

            //set recurrence start here because it's calculated differently for tasks and appointments
            $recur["start"] = $this->getDayStartOfTimestamp($this->getGMTTimeByTZ($localstart, $tz));

            $recur["startocc"] = $starttime["tm_hour"] * 60 + $starttime["tm_min"];
            $recur["endocc"] = $recur["startocc"] + $duration; // Note that this may be > 24*60 if multi-day

            //only tasks can regenerate
            $recur["regen"] = false;

            // Process exceptions. The PDA will send all exceptions for this recurring item.
            if(isset($appointment->exceptions)) {
                foreach($appointment->exceptions as $exception) {
                    // we always need the base date
                    if(!isset($exception->exceptionstarttime)) {
                        continue;
                    }

                    $basedate = $this->getDayStartOfTimestamp($exception->exceptionstarttime);
                    if(isset($exception->deleted) && $exception->deleted) {
                        $noexceptions = false;
                        // Delete exception
                        $recurrence->createException(array(), $basedate, true);
                    }
                    else {
                        // Change exception
                        $mapiexception = array("basedate" => $basedate);
                        //other exception properties which are not handled in recurrence
                        $exceptionprops = array();

                        if(isset($exception->starttime)) {
                            $mapiexception["start"] = $this->getLocaltimeByTZ($exception->starttime, $tz);
                            $exceptionprops[$appointmentprops["starttime"]] = $exception->starttime;
                        }
                        if(isset($exception->endtime)) {
                            $mapiexception["end"] = $this->getLocaltimeByTZ($exception->endtime, $tz);
                            $exceptionprops[$appointmentprops["endtime"]] = $exception->endtime;
                        }
                        if(isset($exception->subject))
                            $exceptionprops[$appointmentprops["subject"]] = $mapiexception["subject"] = u2w($exception->subject);
                        if(isset($exception->location))
                            $exceptionprops[$appointmentprops["location"]] = $mapiexception["location"] = u2w($exception->location);
                        if(isset($exception->busystatus))
                            $exceptionprops[$appointmentprops["busystatus"]] = $mapiexception["busystatus"] = $exception->busystatus;
                        if(isset($exception->reminder)) {
                            $exceptionprops[$appointmentprops["reminderset"]] = $mapiexception["reminder_set"] = 1;
                            $exceptionprops[$appointmentprops["remindertime"]] = $mapiexception["remind_before"] = $exception->reminder;
                        }
                        if(isset($exception->alldayevent))
                            $exceptionprops[$appointmentprops["alldayevent"]] = $mapiexception["alldayevent"] = $exception->alldayevent;


                        if(!isset($recur["changed_occurences"]))
                            $recur["changed_occurences"] = array();

                        if (isset($exception->body))
                            $exceptionprops[$appointmentprops["body"]] = u2w($exception->body);

                        if (isset($exception->asbody)) {
                            $this->setASbody($exception->asbody, $exceptionprops, $appointmentprops);
                            $mapiexception["body"] = $exceptionprops[$appointmentprops["body"]] =
                                (isset($exceptionprops[$appointmentprops["body"]])) ? $exceptionprops[$appointmentprops["body"]] :
                                ((isset($exceptionprops[$appointmentprops["html"]])) ? $exceptionprops[$appointmentprops["html"]] : "");
                        }

                        array_push($recur["changed_occurences"], $mapiexception);

                        if (!empty($exceptionprops)) {
                            $noexceptions = false;
                            if($recurrence->isException($basedate)){
                                $recurrence->modifyException($exceptionprops, $basedate);
                            }
                            else {
                                $recurrence->createException($exceptionprops, $basedate);
                            }
                        }

                    }
                }
            }

            //setRecurrence deletes the attachments from an appointment
            if ($noexceptions) {
                $recurrence->setRecurrence($tz, $recur);
            }
        }
        else {
            $props[$appointmentprops["isrecurring"]] = false;
        }

        //always set the PR_SENT_REPRESENTING_* props so that the attendee status update also works with the webaccess
        $p = array( $appointmentprops["representingentryid"], $appointmentprops["representingname"], $appointmentprops["sentrepresentingaddt"],
                    $appointmentprops["sentrepresentingemail"], $appointmentprops["sentrepresentinsrchk"], $appointmentprops["responsestatus"]);
        $representingprops = $this->getProps($mapimessage, $p);

        if (!isset($representingprops[$appointmentprops["representingentryid"]])) {
            // TODO use GetStoreProps
            $storeProps = mapi_getprops($this->store, array(PR_MAILBOX_OWNER_ENTRYID));
            $props[$appointmentprops["representingentryid"]] = $storeProps[PR_MAILBOX_OWNER_ENTRYID];
            $displayname = $this->getFullnameFromEntryID($storeProps[PR_MAILBOX_OWNER_ENTRYID]);

            $props[$appointmentprops["representingname"]] = ($displayname !== false) ? $displayname : Request::GetUser();
            $props[$appointmentprops["sentrepresentingemail"]] = Request::GetUser();
            $props[$appointmentprops["sentrepresentingaddt"]] = "ZARAFA";
            $props[$appointmentprops["sentrepresentinsrchk"]] = $props[$appointmentprops["sentrepresentingaddt"]].":".$props[$appointmentprops["sentrepresentingemail"]];

            if(isset($appointment->attendees) && is_array($appointment->attendees) && !empty($appointment->attendees)) {
                $props[$appointmentprops["icon"]] = 1026;
                // the user is the organizer
                // set these properties to show tracking tab in webapp

                $props[$appointmentprops["mrwassent"]] = true;
                $props[$appointmentprops["responsestatus"]] = olResponseOrganized;
                $props[$appointmentprops["meetingstatus"]] = olMeeting;
            }
        }
        //we also have to set the responsestatus and not only meetingstatus, so we use another mapi tag
        if (!isset($props[$appointmentprops["responsestatus"]])) {
            if (isset($appointment->responsetype)) {
                $props[$appointmentprops["responsestatus"]] = $appointment->responsetype;
            }
            // only set responsestatus to none if it is not set on the server
            elseif (!isset($representingprops[$appointmentprops["responsestatus"]])) {
                $props[$appointmentprops["responsestatus"]] = olResponseNone;
            }
        }

        // Do attendees
        if(isset($appointment->attendees) && is_array($appointment->attendees)) {
            $recips = array();

            // Outlook XP requires organizer in the attendee list as well
            $org = array();
            $org[PR_ENTRYID] = isset($representingprops[$appointmentprops["representingentryid"]]) ? $representingprops[$appointmentprops["representingentryid"]] : $props[$appointmentprops["representingentryid"]];
            $org[PR_DISPLAY_NAME] = isset($representingprops[$appointmentprops["representingname"]]) ? $representingprops[$appointmentprops["representingname"]] : $props[$appointmentprops["representingname"]];
            $org[PR_ADDRTYPE] = isset($representingprops[$appointmentprops["sentrepresentingaddt"]]) ? $representingprops[$appointmentprops["sentrepresentingaddt"]] : $props[$appointmentprops["sentrepresentingaddt"]];
            $org[PR_EMAIL_ADDRESS] = isset($representingprops[$appointmentprops["sentrepresentingemail"]]) ? $representingprops[$appointmentprops["sentrepresentingemail"]] : $props[$appointmentprops["sentrepresentingemail"]];
            $org[PR_SEARCH_KEY] = isset($representingprops[$appointmentprops["sentrepresentinsrchk"]]) ? $representingprops[$appointmentprops["sentrepresentinsrchk"]] : $props[$appointmentprops["sentrepresentinsrchk"]];
            $org[PR_RECIPIENT_FLAGS] = recipOrganizer | recipSendable;
            $org[PR_RECIPIENT_TYPE] = MAPI_TO; // TODO: shouldn't that be MAPI_ORIG ?

            array_push($recips, $org);

            //open addresss book for user resolve
            $addrbook = $this->getAddressbook();
            foreach($appointment->attendees as $attendee) {
                $recip = array();
                $recip[PR_EMAIL_ADDRESS] = u2w($attendee->email);

                // lookup information in GAB if possible so we have up-to-date name for given address
                $userinfo = array( array( PR_DISPLAY_NAME => $recip[PR_EMAIL_ADDRESS] ) );
                $userinfo = mapi_ab_resolvename($addrbook, $userinfo, EMS_AB_ADDRESS_LOOKUP);
                if(mapi_last_hresult() == NOERROR) {
                    $recip[PR_DISPLAY_NAME] = $userinfo[0][PR_DISPLAY_NAME];
                    $recip[PR_EMAIL_ADDRESS] = $userinfo[0][PR_EMAIL_ADDRESS];
                    $recip[PR_SEARCH_KEY] = $userinfo[0][PR_SEARCH_KEY];
                    $recip[PR_ADDRTYPE] = $userinfo[0][PR_ADDRTYPE];
                    $recip[PR_ENTRYID] = $userinfo[0][PR_ENTRYID];
                    $recip[PR_RECIPIENT_TYPE] = isset($attendee->attendeetype) ? $attendee->attendeetype : MAPI_TO;
                    $recip[PR_RECIPIENT_FLAGS] = recipSendable;
                    $recip[PR_RECIPIENT_TRACKSTATUS] = isset($attendee->attendeestatus) ? $attendee->attendeestatus : olResponseNone;
                }
                else {
                    $recip[PR_DISPLAY_NAME] = u2w($attendee->name);
                    $recip[PR_SEARCH_KEY] = "SMTP:".$recip[PR_EMAIL_ADDRESS]."\0";
                    $recip[PR_ADDRTYPE] = "SMTP";
                    $recip[PR_RECIPIENT_TYPE] = isset($attendee->attendeetype) ? $attendee->attendeetype : MAPI_TO;
                    $recip[PR_ENTRYID] = mapi_createoneoff($recip[PR_DISPLAY_NAME], $recip[PR_ADDRTYPE], $recip[PR_EMAIL_ADDRESS]);
                }

                array_push($recips, $recip);
            }

            mapi_message_modifyrecipients($mapimessage, 0, $recips);
        }
        mapi_setprops($mapimessage, $props);
    }

    /**
     * Writes a SyncContact to MAPI
     *
     * @param mixed             $mapimessage
     * @param SyncContact       $contact
     *
     * @access private
     * @return boolean
     */
    private function setContact($mapimessage, $contact) {
        mapi_setprops($mapimessage, array(PR_MESSAGE_CLASS => "IPM.Contact"));

        // normalize email addresses
        if (isset($contact->email1address) && (($contact->email1address = $this->extractEmailAddress($contact->email1address)) === false))
            unset($contact->email1address);

        if (isset($contact->email2address) && (($contact->email2address = $this->extractEmailAddress($contact->email2address)) === false))
            unset($contact->email2address);

        if (isset($contact->email3address) && (($contact->email3address = $this->extractEmailAddress($contact->email3address)) === false))
            unset($contact->email3address);

        $contactmapping = MAPIMapping::GetContactMapping();
        $contactprops = MAPIMapping::GetContactProperties();
        $this->setPropsInMAPI($mapimessage, $contact, $contactmapping);

        ///set display name from contact's properties
        $cname = $this->composeDisplayName($contact);

        //get contact specific mapi properties and merge them with the AS properties
        $contactprops = array_merge($this->getPropIdsFromStrings($contactmapping), $this->getPropIdsFromStrings($contactprops));

        //contact specific properties to be set
        $props = array();

        //need to be set in order to show contacts properly in outlook and wa
        $nremails = array();
        $abprovidertype = 0;

        if (isset($contact->email1address))
            $this->setEmailAddress($contact->email1address, $cname, 1, $props, $contactprops, $nremails, $abprovidertype);
        if (isset($contact->email2address))
            $this->setEmailAddress($contact->email2address, $cname, 2, $props, $contactprops, $nremails, $abprovidertype);
        if (isset($contact->email3address))
            $this->setEmailAddress($contact->email3address, $cname, 3, $props, $contactprops, $nremails, $abprovidertype);

        $props[$contactprops["addressbooklong"]] = $abprovidertype;
        $props[$contactprops["displayname"]] = $props[$contactprops["subject"]] = $cname;

        //pda multiple e-mail addresses bug fix for the contact
        if (!empty($nremails)) $props[$contactprops["addressbookmv"]] = $nremails;


        //set addresses
        $this->setAddress("home", $contact->homecity, $contact->homecountry, $contact->homepostalcode, $contact->homestate, $contact->homestreet, $props, $contactprops);
        $this->setAddress("business", $contact->businesscity, $contact->businesscountry, $contact->businesspostalcode, $contact->businessstate, $contact->businessstreet, $props, $contactprops);
        $this->setAddress("other", $contact->othercity, $contact->othercountry, $contact->otherpostalcode, $contact->otherstate, $contact->otherstreet, $props, $contactprops);

        //set the mailing address and its type
        if (isset($props[$contactprops["businessaddress"]])) {
            $props[$contactprops["mailingaddress"]] = 2;
            $this->setMailingAddress($contact->businesscity, $contact->businesscountry, $contact->businesspostalcode, $contact->businessstate, $contact->businessstreet, $props[$contactprops["businessaddress"]], $props, $contactprops);
        }
        elseif (isset($props[$contactprops["homeaddress"]])) {
            $props[$contactprops["mailingaddress"]] = 1;
            $this->setMailingAddress($contact->homecity, $contact->homecountry, $contact->homepostalcode, $contact->homestate, $contact->homestreet, $props[$contactprops["homeaddress"]], $props, $contactprops);
        }
        elseif (isset($props[$contactprops["otheraddress"]])) {
            $props[$contactprops["mailingaddress"]] = 3;
            $this->setMailingAddress($contact->othercity, $contact->othercountry, $contact->otherpostalcode, $contact->otherstate, $contact->otherstreet, $props[$contactprops["otheraddress"]], $props, $contactprops);
        }

        if (isset($contact->picture)) {
            $picbinary = base64_decode($contact->picture);
            $picsize = strlen($picbinary);
            $props[$contactprops["haspic"]] = false;

            // TODO contact picture handling
            // check if contact has already got a picture. delete it first in that case
            // delete it also if it was removed on a mobile
            $picprops = mapi_getprops($mapimessage, array($contactprops["haspic"]));
            if (isset($picprops[$contactprops["haspic"]]) && $picprops[$contactprops["haspic"]]) {
                ZLog::Write(LOGLEVEL_DEBUG, "Contact already has a picture. Delete it");

                $attachtable = mapi_message_getattachmenttable($mapimessage);
                mapi_table_restrict($attachtable, MAPIUtils::GetContactPicRestriction());
                $rows = mapi_table_queryallrows($attachtable, array(PR_ATTACH_NUM));
                if (isset($rows) && is_array($rows)) {
                    foreach ($rows as $row) {
                        mapi_message_deleteattach($mapimessage, $row[PR_ATTACH_NUM]);
                    }
                }
            }

            // only set picture if there's data in the request
            if ($picbinary !== false && $picsize > 0) {
                $props[$contactprops["haspic"]] = true;
                $pic = mapi_message_createattach($mapimessage);
                // Set properties of the attachment
                $picprops = array(
                    PR_ATTACH_LONG_FILENAME => "ContactPicture.jpg",
                    PR_DISPLAY_NAME => "ContactPicture.jpg",
                    0x7FFF000B => true,
                    PR_ATTACHMENT_HIDDEN => false,
                    PR_ATTACHMENT_FLAGS => 1,
                    PR_ATTACH_METHOD => ATTACH_BY_VALUE,
                    PR_ATTACH_EXTENSION => ".jpg",
                    PR_ATTACH_NUM => 1,
                    PR_ATTACH_SIZE => $picsize,
                    PR_ATTACH_DATA_BIN => $picbinary,
                );

                mapi_setprops($pic, $picprops);
                mapi_savechanges($pic);
            }
        }

        if (isset($contact->asbody)) {
            $this->setASbody($contact->asbody, $props, $contactprops);
        }

        //set fileas
        if (defined('FILEAS_ORDER')) {
            $lastname = (isset($contact->lastname)) ? $contact->lastname : "";
            $firstname = (isset($contact->firstname)) ? $contact->firstname : "";
            $middlename = (isset($contact->middlename)) ? $contact->middlename : "";
            $company = (isset($contact->companyname)) ? $contact->companyname : "";
            $props[$contactprops["fileas"]] = Utils::BuildFileAs($lastname, $firstname, $middlename, $company);
        }
        else ZLog::Write(LOGLEVEL_DEBUG, "FILEAS_ORDER not defined");

        mapi_setprops($mapimessage, $props);
    }

    /**
     * Writes a SyncTask to MAPI
     *
     * @param mixed             $mapimessage
     * @param SyncTask          $task
     *
     * @access private
     * @return boolean
     */
    private function setTask($mapimessage, $task) {
        mapi_setprops($mapimessage, array(PR_MESSAGE_CLASS => "IPM.Task"));

        $taskmapping = MAPIMapping::GetTaskMapping();
        $taskprops = MAPIMapping::GetTaskProperties();
        $this->setPropsInMAPI($mapimessage, $task, $taskmapping);
        $taskprops = array_merge($this->getPropIdsFromStrings($taskmapping), $this->getPropIdsFromStrings($taskprops));

        // task specific properties to be set
        $props = array();

        if (isset($task->asbody)) {
            $this->setASbody($task->asbody, $props, $taskprops);
        }

        if(isset($task->complete)) {
            if($task->complete) {
                // Set completion to 100%
                // Set status to 'complete'
                $props[$taskprops["completion"]] = 1.0;
                $props[$taskprops["status"]] = 2;
                $props[$taskprops["reminderset"]] = false;
            } else {
                // Set completion to 0%
                // Set status to 'not started'
                $props[$taskprops["completion"]] = 0.0;
                $props[$taskprops["status"]] = 0;
            }
        }
        if (isset($task->recurrence) && class_exists('TaskRecurrence')) {
            $deadoccur = false;
            if ((isset($task->recurrence->occurrences) && $task->recurrence->occurrences == 1) ||
                (isset($task->recurrence->deadoccur) && $task->recurrence->deadoccur == 1)) //ios5 sends deadoccur inside the recurrence
                $deadoccur = true;

            // Set PR_ICON_INDEX to 1281 to show correct icon in category view
            $props[$taskprops["icon"]] = 1281;
            // dead occur - false if new occurrences should be generated from the task
            // true - if it is the last ocurrence of the task
            $props[$taskprops["deadoccur"]] = $deadoccur;
            $props[$taskprops["isrecurringtag"]] = true;

            $recurrence = new TaskRecurrence($this->store, $mapimessage);
            $recur = array();
            $this->setRecurrence($task, $recur);

            // task specific recurrence properties which we need to set here
            // "start" and "end" are in GMT when passing to class.recurrence
            // set recurrence start here because it's calculated differently for tasks and appointments
            $recur["start"] = $task->recurrence->start;
            $recur["regen"] = (isset($task->recurrence->regenerate) && $task->recurrence->regenerate) ? 1 : 0;
            // OL regenerates recurring task itself, but setting deleteOccurrence is required so that PHP-MAPI doesn't regenerate
            // completed occurrence of a task.
            if ($recur["regen"] == 0) {
                $recur["deleteOccurrence"] = 0;
            }
            //Also add dates to $recur
            $recur["duedate"] = $task->duedate;
            $recur["complete"] = (isset($task->complete) && $task->complete) ? 1 : 0;
            if (isset($task->datecompleted)) {
                $recur["datecompleted"] = $task->datecompleted;
            }
            $recurrence->setRecurrence($recur);
        }

        $props[$taskprops["private"]] = (isset($task->sensitivity) && $task->sensitivity >= SENSITIVITY_PRIVATE) ? true : false;

        //open addresss book for user resolve to set the owner
        $addrbook = $this->getAddressbook();

        // check if there is already an owner for the task, set current user if not
        $p = array( $taskprops["owner"]);
        $owner = $this->getProps($mapimessage, $p);
        if (!isset($owner[$taskprops["owner"]])) {
            $userinfo = mapi_zarafa_getuser_by_name($this->store, Request::GetUser());
            if(mapi_last_hresult() == NOERROR && isset($userinfo["fullname"])) {
                $props[$taskprops["owner"]] = $userinfo["fullname"];
            }
        }
        mapi_setprops($mapimessage, $props);


    }

    /**
    * Writes a SyncNote to MAPI
    *
    * @param mixed             $mapimessage
    * @param SyncNote          $note
    *
    * @access private
    * @return boolean
    */
    private function setNote($mapimessage, $note) {
        // Touchdown does not send categories if all are unset or there is none.
        // Setting it to an empty array will unset the property in KC as well
        if (!isset($note->categories)) $note->categories = array();

        // update icon index to correspond to the color
        if (isset($note->Color) && $note->Color > -1 && $note->Color < 5) {
            $note->Iconindex = 768 + $note->Color;
        }

        $this->setPropsInMAPI($mapimessage, $note, MAPIMapping::GetNoteMapping());

        $noteprops = MAPIMapping::GetNoteProperties();
        $noteprops = $this->getPropIdsFromStrings($noteprops);

        // note specific properties to be set
        $props = array();
        $props[$noteprops["messageclass"]] = "IPM.StickyNote";
        // set body otherwise the note will be "broken" when editing it in outlook
        if (isset($note->asbody)) {
            $this->setASbody($note->asbody, $props, $noteprops);
        }

        $props[$noteprops["internetcpid"]] = INTERNET_CPID_UTF8;
        mapi_setprops($mapimessage, $props);
    }

    /**----------------------------------------------------------------------------------------------------------
     * HELPER
     */

    /**
     * Returns the timestamp offset.
     *
     * @param string            $ts
     *
     * @access private
     * @return long
     */
    private function GetTZOffset($ts) {
        $Offset = date("O", $ts);

        $Parity = $Offset < 0 ? -1 : 1;
        $Offset = $Parity * $Offset;
        $Offset = ($Offset - ($Offset % 100)) / 100 * 60 + $Offset % 100;

        return $Parity * $Offset;
    }

    /**
     * Localtime of the timestamp.
     *
     * @param long              $time
     *
     * @access private
     * @return array
     */
    private function gmtime($time) {
        $TZOffset = $this->GetTZOffset($time);

        $t_time = $time - $TZOffset * 60; #Counter adjust for localtime()
        $t_arr = localtime($t_time, 1);

        return $t_arr;
    }

    /**
     * Sets the properties in a MAPI object according to an Sync object and a property mapping.
     *
     * @param mixed             $mapimessage
     * @param SyncObject        $message
     * @param array             $mapping
     *
     * @access private
     * @return
     */
    private function setPropsInMAPI($mapimessage, $message, $mapping) {
        $mapiprops = $this->getPropIdsFromStrings($mapping);
        $unsetVars = $message->getUnsetVars();
        $propsToDelete = array();
        $propsToSet = array();

        foreach ($mapiprops as $asprop => $mapiprop) {
            if(isset($message->$asprop)) {

                // UTF8->windows1252.. this is ok for all numerical values
                if(mapi_prop_type($mapiprop) != PT_BINARY && mapi_prop_type($mapiprop) != PT_MV_BINARY) {
                    if(is_array($message->$asprop))
                        $value = array_map("u2wi", $message->$asprop);
                    else
                        $value = u2wi($message->$asprop);
                } else {
                    $value = $message->$asprop;
                }

                // Make sure the php values are the correct type
                switch(mapi_prop_type($mapiprop)) {
                    case PT_BINARY:
                    case PT_STRING8:
                        settype($value, "string");
                        break;
                    case PT_BOOLEAN:
                        settype($value, "boolean");
                        break;
                    case PT_SYSTIME:
                    case PT_LONG:
                        settype($value, "integer");
                        break;
                }

                // decode base64 value
                if($mapiprop == PR_RTF_COMPRESSED) {
                    $value = base64_decode($value);
                    if(strlen($value) == 0)
                        continue; // PDA will sometimes give us an empty RTF, which we'll ignore.

                    // Note that you can still remove notes because when you remove notes it gives
                    // a valid compressed RTF with nothing in it.

                }
                // if an "empty array" is to be saved, it the mvprop should be deleted - fixes Mantis #468
                if (is_array($value) && empty($value)) {
                    $propsToDelete[] = $mapiprop;
                    ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->setPropsInMAPI(): Property '%s' to be deleted as it is an empty array", $asprop));
                }
                else {
                    // all properties will be set at once
                    $propsToSet[$mapiprop] = $value;
                }
            }
            elseif (in_array($asprop, $unsetVars)) {
                $propsToDelete[] = $mapiprop;
            }
        }

        mapi_setprops($mapimessage, $propsToSet);
        if (mapi_last_hresult()) {
            Zlog::Write(LOGLEVEL_WARN, sprintf("Failed to set properties, trying to set them separately. Error code was:%x", mapi_last_hresult()));
            $this->setPropsIndividually($mapimessage, $propsToSet, $mapiprops);
        }

        mapi_deleteprops($mapimessage, $propsToDelete);

        //clean up
        unset($unsetVars, $propsToDelete);
    }

    /**
     * Sets the properties one by one in a MAPI object.
     *
     * @param mixed             &$mapimessage
     * @param array             &$propsToSet
     * @param array             &$mapiprops
     *
     * @access private
     * @return
     */
    private function setPropsIndividually(&$mapimessage, &$propsToSet, &$mapiprops) {
        foreach ($propsToSet as $prop => $value) {
            mapi_setprops($mapimessage, array($prop => $value));
            if (mapi_last_hresult()) {
                Zlog::Write(LOGLEVEL_ERROR, sprintf("Failed setting property [%s] with value [%s], error code was:%x", array_search($prop, $mapiprops), $value, mapi_last_hresult()));
            }
        }

    }

    /**
     * Gets the properties from a MAPI object and sets them in the Sync object according to mapping.
     *
     * @param SyncObject        &$message
     * @param mixed             $mapimessage
     * @param array             $mapping
     *
     * @access private
     * @return
     */
    private function getPropsFromMAPI(&$message, $mapimessage, $mapping) {
        $messageprops = $this->getProps($mapimessage, $mapping);
        foreach ($mapping as $asprop => $mapiprop) {
             // Get long strings via openproperty
            if (isset($messageprops[mapi_prop_tag(PT_ERROR, mapi_prop_id($mapiprop))])) {
                if ($messageprops[mapi_prop_tag(PT_ERROR, mapi_prop_id($mapiprop))] == MAPI_E_NOT_ENOUGH_MEMORY_32BIT ||
                    $messageprops[mapi_prop_tag(PT_ERROR, mapi_prop_id($mapiprop))] == MAPI_E_NOT_ENOUGH_MEMORY_64BIT) {
                    $messageprops[$mapiprop] = MAPIUtils::readPropStream($mapimessage, $mapiprop);
                }
            }

            if(isset($messageprops[$mapiprop])) {
                if(mapi_prop_type($mapiprop) == PT_BOOLEAN) {
                    // Force to actual '0' or '1'
                    if($messageprops[$mapiprop])
                        $message->$asprop = 1;
                    else
                        $message->$asprop = 0;
                } else {
                    // Special handling for PR_MESSAGE_FLAGS
                    if($mapiprop == PR_MESSAGE_FLAGS)
                        $message->$asprop = $messageprops[$mapiprop] & 1; // only look at 'read' flag
                    else if($mapiprop == PR_RTF_COMPRESSED)
                        //do not send rtf to the mobile
                        continue;
                    else if(is_array($messageprops[$mapiprop]))
                        $message->$asprop = array_map("w2u", $messageprops[$mapiprop]);
                    else {
                        if(mapi_prop_type($mapiprop) != PT_BINARY && mapi_prop_type($mapiprop) != PT_MV_BINARY)
                            $message->$asprop = w2u($messageprops[$mapiprop]);
                        else
                            $message->$asprop = $messageprops[$mapiprop];
                    }
                }
            }
        }
    }

    /**
     * Wraps getPropIdsFromStrings() calls.
     *
     * @param mixed             &$mapiprops
     *
     * @access private
     * @return
     */
    private function getPropIdsFromStrings(&$mapiprops) {
        return getPropIdsFromStrings($this->store, $mapiprops);
    }

    /**
     * Wraps mapi_getprops() calls.
     *
     * @param mixed             &$mapiprops
     *
     * @access private
     * @return
     */
    protected function getProps($mapimessage, &$mapiproperties) {
        $mapiproperties = $this->getPropIdsFromStrings($mapiproperties);
        return mapi_getprops($mapimessage, $mapiproperties);
    }

    /**
     * Returns an GMT timezone array.
     *
     * @access private
     * @return array
     */
    private function getGMTTZ() {
        $tz = array(
            "bias" => 0,
            "tzname" => "",
            "dstendyear" => 0,
            "dstendmonth" => 10,
            "dstendday" => 0,
            "dstendweek" => 5,
            "dstendhour" => 2,
            "dstendminute" => 0,
            "dstendsecond" => 0,
            "dstendmillis" => 0,
            "stdbias" => 0,
            "tznamedst" => "",
            "dststartyear" => 0,
            "dststartmonth" => 3,
            "dststartday" => 0,
            "dststartweek" => 5,
            "dststarthour" => 1,
            "dststartminute" => 0,
            "dststartsecond" => 0,
            "dststartmillis" => 0,
            "dstbias" => -60
    );

        return $tz;
    }

    /**
     * Unpack timezone info from MAPI.
     *
     * @param string    $data
     *
     * @access private
     * @return array
     */
    private function getTZFromMAPIBlob($data) {
        $unpacked = unpack("lbias/lstdbias/ldstbias/" .
                           "vconst1/vdstendyear/vdstendmonth/vdstendday/vdstendweek/vdstendhour/vdstendminute/vdstendsecond/vdstendmillis/" .
                           "vconst2/vdststartyear/vdststartmonth/vdststartday/vdststartweek/vdststarthour/vdststartminute/vdststartsecond/vdststartmillis", $data);
        return $unpacked;
    }

    /**
     * Unpack timezone info from Sync.
     *
     * @param string    $data
     *
     * @access private
     * @return array
     */
    private function getTZFromSyncBlob($data) {
        $tz = unpack(   "lbias/a64tzname/vdstendyear/vdstendmonth/vdstendday/vdstendweek/vdstendhour/vdstendminute/vdstendsecond/vdstendmillis/" .
                        "lstdbias/a64tznamedst/vdststartyear/vdststartmonth/vdststartday/vdststartweek/vdststarthour/vdststartminute/vdststartsecond/vdststartmillis/" .
                        "ldstbias", $data);

        // Make the structure compatible with class.recurrence.php
        $tz["timezone"] = $tz["bias"];
        $tz["timezonedst"] = $tz["dstbias"];

        return $tz;
    }

    /**
     * Pack timezone info for MAPI.
     *
     * @param array     $tz
     *
     * @access private
     * @return string
     */
    private function getMAPIBlobFromTZ($tz) {
        $packed = pack("lll" . "vvvvvvvvv" . "vvvvvvvvv",
                      $tz["bias"], $tz["stdbias"], $tz["dstbias"],
                      0, 0, $tz["dstendmonth"], $tz["dstendday"], $tz["dstendweek"], $tz["dstendhour"], $tz["dstendminute"], $tz["dstendsecond"], $tz["dstendmillis"],
                      0, 0, $tz["dststartmonth"], $tz["dststartday"], $tz["dststartweek"], $tz["dststarthour"], $tz["dststartminute"], $tz["dststartsecond"], $tz["dststartmillis"]);

        return $packed;
    }

    /**
     * Checks the date to see if it is in DST, and returns correct GMT date accordingly.
     *
     * @param long      $localtime
     * @param array     $tz
     *
     * @access private
     * @return long
     */
    private function getGMTTimeByTZ($localtime, $tz) {
        if(!isset($tz) || !is_array($tz))
            return $localtime;

        if($this->isDST($localtime, $tz))
            return $localtime + $tz["bias"]*60 + $tz["dstbias"]*60;
        else
            return $localtime + $tz["bias"]*60;
    }

    /**
     * Returns the local time for the given GMT time, taking account of the given timezone.
     *
     * @param long      $gmttime
     * @param array     $tz
     *
     * @access private
     * @return long
     */
    private function getLocaltimeByTZ($gmttime, $tz) {
        if(!isset($tz) || !is_array($tz))
            return $gmttime;

        if($this->isDST($gmttime - $tz["bias"]*60, $tz)) // may bug around the switch time because it may have to be 'gmttime - bias - dstbias'
            return $gmttime - $tz["bias"]*60 - $tz["dstbias"]*60;
        else
            return $gmttime - $tz["bias"]*60;
    }

    /**
     * Returns TRUE if it is the summer and therefore DST is in effect.
     *
     * @param long      $localtime
     * @param array     $tz
     *
     * @access private
     * @return boolean
     */
    private function isDST($localtime, $tz) {
        if( !isset($tz) || !is_array($tz) ||
            !isset($tz["dstbias"]) || $tz["dstbias"] == 0 ||
            !isset($tz["dststartmonth"]) || $tz["dststartmonth"] == 0 ||
            !isset($tz["dstendmonth"]) || $tz["dstendmonth"] == 0)
            return false;

        $year = gmdate("Y", $localtime);
        $start = $this->getTimestampOfWeek($year, $tz["dststartmonth"], $tz["dststartweek"], $tz["dststartday"], $tz["dststarthour"], $tz["dststartminute"], $tz["dststartsecond"]);
        $end = $this->getTimestampOfWeek($year, $tz["dstendmonth"], $tz["dstendweek"], $tz["dstendday"], $tz["dstendhour"], $tz["dstendminute"], $tz["dstendsecond"]);

        if($start < $end) {
            // northern hemisphere (july = dst)
          if($localtime >= $start && $localtime < $end)
              $dst = true;
          else
              $dst = false;
        } else {
            // southern hemisphere (january = dst)
          if($localtime >= $end && $localtime < $start)
              $dst = false;
          else
              $dst = true;
        }

        return $dst;
    }

    /**
     * Returns the local timestamp for the $week'th $wday of $month in $year at $hour:$minute:$second.
     *
     * @param int       $year
     * @param int       $month
     * @param int       $week
     * @param int       $wday
     * @param int       $hour
     * @param int       $minute
     * @param int       $second
     *
     * @access private
     * @return long
     */
    private function getTimestampOfWeek($year, $month, $week, $wday, $hour, $minute, $second) {
        if ($month == 0)
            return;

        $date = gmmktime($hour, $minute, $second, $month, 1, $year);

        // Find first day in month which matches day of the week
        while(1) {
            $wdaynow = gmdate("w", $date);
            if($wdaynow == $wday)
                break;
            $date += 24 * 60 * 60;
        }

        // Forward $week weeks (may 'overflow' into the next month)
        $date = $date + $week * (24 * 60 * 60 * 7);

        // Reverse 'overflow'. Eg week '10' will always be the last week of the month in which the
        // specified weekday exists
        while(1) {
            $monthnow = gmdate("n", $date); // gmdate returns 1-12
            if($monthnow > $month)
                $date = $date - (24 * 7 * 60 * 60);
            else
                break;
        }

        return $date;
    }

    /**
     * Normalize the given timestamp to the start of the day.
     *
     * @param long      $timestamp
     *
     * @access private
     * @return long
     */
    private function getDayStartOfTimestamp($timestamp) {
        return $timestamp - ($timestamp % (60 * 60 * 24));
    }

    /**
     * Returns an SMTP address from an entry id.
     *
     * @param string    $entryid
     *
     * @access private
     * @return string
     */
    private function getSMTPAddressFromEntryID($entryid) {
        $addrbook = $this->getAddressbook();

        $mailuser = mapi_ab_openentry($addrbook, $entryid);
        if(!$mailuser)
            return "";

        $props = mapi_getprops($mailuser, array(PR_ADDRTYPE, PR_SMTP_ADDRESS, PR_EMAIL_ADDRESS));

        $addrtype = isset($props[PR_ADDRTYPE]) ? $props[PR_ADDRTYPE] : "";

        if(isset($props[PR_SMTP_ADDRESS]))
            return $props[PR_SMTP_ADDRESS];

        if($addrtype == "SMTP" && isset($props[PR_EMAIL_ADDRESS]))
            return $props[PR_EMAIL_ADDRESS];
        elseif ($addrtype == "ZARAFA" && isset($props[PR_EMAIL_ADDRESS])) {
            $userinfo = mapi_zarafa_getuser_by_name($this->store, $props[PR_EMAIL_ADDRESS]);
            if (is_array($userinfo) && isset($userinfo["emailaddress"]))
                return $userinfo["emailaddress"];
        }

        return "";
    }

    /**
     * Returns fullname from an entryid.
     *
     * @param binary $entryid
     * @return string fullname or false on error
     */
    private function getFullnameFromEntryID($entryid) {
        $addrbook = $this->getAddressbook();
        $mailuser = mapi_ab_openentry($addrbook, $entryid);
        if(!$mailuser) {
            ZLog::Write(LOGLEVEL_ERROR, sprintf("Unable to get mailuser for getFullnameFromEntryID (0x%X)", mapi_last_hresult()));
            return false;
        }

        $props = mapi_getprops($mailuser, array(PR_DISPLAY_NAME));
        if (isset($props[PR_DISPLAY_NAME])) {
            return $props[PR_DISPLAY_NAME];
        }
        ZLog::Write(LOGLEVEL_ERROR, sprintf("Unable to get fullname for getFullnameFromEntryID (0x%X)", mapi_last_hresult()));
        return false;
    }

    /**
     * Builds a displayname from several separated values.
     *
     * @param SyncContact       $contact
     *
     * @access private
     * @return string
     */
    private function composeDisplayName(&$contact) {
        // Set display name and subject to a combined value of firstname and lastname
        $cname = (isset($contact->prefix))?u2w($contact->prefix)." ":"";
        $cname .= u2w($contact->firstname);
        $cname .= (isset($contact->middlename))?" ". u2w($contact->middlename):"";
        $cname .= " ". u2w($contact->lastname);
        $cname .= (isset($contact->suffix))?" ". u2w($contact->suffix):"";
        return trim($cname);
    }

    /**
     * Sets all dependent properties for an email address.
     *
     * @param string            $emailAddress
     * @param string            $displayName
     * @param int               $cnt
     * @param array             &$props
     * @param array             &$properties
     * @param array             &$nremails
     * @param int               &$abprovidertype
     *
     * @access private
     * @return
     */
    private function setEmailAddress($emailAddress, $displayName, $cnt, &$props, &$properties, &$nremails, &$abprovidertype){
        if (isset($emailAddress)) {
            $name = (isset($displayName)) ? $displayName : $emailAddress;

            $props[$properties["emailaddress$cnt"]] = $emailAddress;
            $props[$properties["emailaddressdemail$cnt"]] = $emailAddress;
            $props[$properties["emailaddressdname$cnt"]] = $name;
            $props[$properties["emailaddresstype$cnt"]] = "SMTP";
            $props[$properties["emailaddressentryid$cnt"]] = mapi_createoneoff($name, "SMTP", $emailAddress);
            $nremails[] = $cnt - 1;
            $abprovidertype |= 2 ^ ($cnt - 1);
        }
    }

    /**
     * Sets the properties for an address string.
     *
     * @param string            $type               which address is being set
     * @param string            $city
     * @param string            $country
     * @param string            $postalcode
     * @param string            $state
     * @param string            $street
     * @param array             &$props
     * @param array             &$properties
     *
     * @access private
     * @return
     */
     private function setAddress($type, &$city, &$country, &$postalcode, &$state, &$street, &$props, &$properties) {
        if (isset($city)) $props[$properties[$type."city"]] = $city = u2w($city);

        if (isset($country)) $props[$properties[$type."country"]] = $country = u2w($country);

        if (isset($postalcode)) $props[$properties[$type."postalcode"]] = $postalcode = u2w($postalcode);

        if (isset($state)) $props[$properties[$type."state"]] = $state = u2w($state);

        if (isset($street)) $props[$properties[$type."street"]] = $street = u2w($street);

        //set composed address
        $address = Utils::BuildAddressString($street, $postalcode, $city, $state, $country);
        if ($address) $props[$properties[$type."address"]] = $address;
    }

    /**
     * Sets the properties for a mailing address.
     *
     * @param string            $city
     * @param string            $country
     * @param string            $postalcode
     * @param string            $state
     * @param string            $street
     * @param string            $address
     * @param array             &$props
     * @param array             &$properties
     *
     * @access private
     * @return
     */
    private function setMailingAddress($city, $country, $postalcode,  $state, $street, $address, &$props, &$properties) {
        if (isset($city)) $props[$properties["city"]] = $city;
        if (isset($country)) $props[$properties["country"]] = $country;
        if (isset($postalcode)) $props[$properties["postalcode"]] = $postalcode;
        if (isset($state)) $props[$properties["state"]] = $state;
        if (isset($street)) $props[$properties["street"]] = $street;
        if (isset($address)) $props[$properties["postaladdress"]] = $address;
    }

    /**
     * Sets data in a recurrence array.
     *
     * @param SyncObject        $message
     * @param array             &$recur
     *
     * @access private
     * @return
     */
    private function setRecurrence($message, &$recur) {
        if (isset($message->complete)) {
            $recur["complete"] = $message->complete;
        }

        if(!isset($message->recurrence->interval))
            $message->recurrence->interval = 1;

        //set the default value of numoccur
        $recur["numoccur"] = 0;
        //a place holder for recurrencetype property
        $recur["recurrencetype"] = 0;

        switch($message->recurrence->type) {
            case 0:
                $recur["type"] = 10;
                if(isset($message->recurrence->dayofweek))
                    $recur["subtype"] = 1;
                else
                    $recur["subtype"] = 0;

                $recur["everyn"] = $message->recurrence->interval * (60 * 24);
                $recur["recurrencetype"] = 1;
                break;
            case 1:
                $recur["type"] = 11;
                $recur["subtype"] = 1;
                $recur["everyn"] = $message->recurrence->interval;
                $recur["recurrencetype"] = 2;
                break;
            case 2:
                $recur["type"] = 12;
                $recur["subtype"] = 2;
                $recur["everyn"] = $message->recurrence->interval;
                $recur["recurrencetype"] = 3;
                break;
            case 3:
                $recur["type"] = 12;
                $recur["subtype"] = 3;
                $recur["everyn"] = $message->recurrence->interval;
                $recur["recurrencetype"] = 3;
                break;
            case 4:
                $recur["type"] = 13;
                $recur["subtype"] = 1;
                $recur["everyn"] = $message->recurrence->interval * 12;
                $recur["recurrencetype"] = 4;
                break;
            case 5:
                $recur["type"] = 13;
                $recur["subtype"] = 2;
                $recur["everyn"] = $message->recurrence->interval * 12;
                $recur["recurrencetype"] = 4;
                break;
            case 6:
                $recur["type"] = 13;
                $recur["subtype"] = 3;
                $recur["everyn"] = $message->recurrence->interval * 12;
                $recur["recurrencetype"] = 4;
                break;
        }

        // "start" and "end" are in GMT when passing to class.recurrence
        $recur["end"] = $this->getDayStartOfTimestamp(0x7fffffff); // Maximum GMT value for end by default

        if(isset($message->recurrence->until)) {
            $recur["term"] = 0x21;
            $recur["end"] = $message->recurrence->until;
        } else if(isset($message->recurrence->occurrences)) {
            $recur["term"] = 0x22;
            $recur["numoccur"] = $message->recurrence->occurrences;
        } else {
            $recur["term"] = 0x23;
        }

        if(isset($message->recurrence->dayofweek))
            $recur["weekdays"] = $message->recurrence->dayofweek;
        if(isset($message->recurrence->weekofmonth))
            $recur["nday"] = $message->recurrence->weekofmonth;
        if(isset($message->recurrence->monthofyear)) {
            // MAPI stores months as the amount of minutes until the beginning of the month in a
            // non-leapyear. Why this is, is totally unclear.
            $monthminutes = array(0,44640,84960,129600,172800,217440,260640,305280,348480,393120,437760,480960);
            $recur["month"] = $monthminutes[$message->recurrence->monthofyear-1];
        }
        if(isset($message->recurrence->dayofmonth))
            $recur["monthday"] = $message->recurrence->dayofmonth;
    }

    /**
     * Extracts the email address (mailbox@host) from an email address because
     * some devices send email address as "Firstname Lastname" <email@me.com>.
     *
     *  @link http://developer.berlios.de/mantis/view.php?id=486
     *
     *  @param string           $email
     *
     *  @access private
     *  @return string or false on error
     */
    private function extractEmailAddress($email) {
        if (!isset($this->zRFC822)) $this->zRFC822 = new Mail_RFC822();
        $parsedAddress = $this->zRFC822->parseAddressList($email);
        if (!isset($parsedAddress[0]->mailbox) || !isset($parsedAddress[0]->host)) return false;

        return $parsedAddress[0]->mailbox.'@'.$parsedAddress[0]->host;
    }

    /**
     * Returns the message body for a required format.
     *
     * @param MAPIMessage       $mapimessage
     * @param int               $bpReturnType
     * @param SyncObject        $message
     *
     * @access private
     * @return boolean
     */
    private function setMessageBodyForType($mapimessage, $bpReturnType, &$message) {
        $truncateHtmlSafe = false;
        //default value is PR_BODY
        $property = PR_BODY;
        switch ($bpReturnType) {
            case SYNC_BODYPREFERENCE_HTML:
                $property = PR_HTML;
                $truncateHtmlSafe = true;
                break;
            case SYNC_BODYPREFERENCE_RTF:
                $property = PR_RTF_COMPRESSED;
                break;
            case SYNC_BODYPREFERENCE_MIME:
                $stat = $this->imtoinet($mapimessage, $message);
                if (isset($message->asbody))
                    $message->asbody->type = $bpReturnType;
                return $stat;
        }

        $stream = mapi_openproperty($mapimessage, $property, IID_IStream, 0, 0);
        if ($stream) {
            $stat = mapi_stream_stat($stream);
            $streamsize = $stat['cb'];
        }
        else {
            $streamsize = 0;
        }

        //set the properties according to supported AS version
        if (Request::GetProtocolVersion() >= 12.0) {
            $message->asbody = new SyncBaseBody();
            $message->asbody->type = $bpReturnType;
            if ($bpReturnType == SYNC_BODYPREFERENCE_RTF) {
                $body = $this->mapiReadStream($stream, $streamsize);
                $message->asbody->data = StringStreamWrapper::Open(base64_encode($body));
            }
            elseif (isset($message->internetcpid) && $bpReturnType == SYNC_BODYPREFERENCE_HTML) {
                // if PR_HTML is UTF-8 we can stream it directly, else we have to convert to UTF-8 & wrap it
                if ($message->internetcpid == INTERNET_CPID_UTF8) {
                    $message->asbody->data = MAPIStreamWrapper::Open($stream, $truncateHtmlSafe);
                }
                else {
                    $body = $this->mapiReadStream($stream, $streamsize);
                    $message->asbody->data = StringStreamWrapper::Open(Utils::ConvertCodepageStringToUtf8($message->internetcpid, $body), $truncateHtmlSafe);
                    $message->internetcpid = INTERNET_CPID_UTF8;
                }
            }
            else {
                $message->asbody->data = MAPIStreamWrapper::Open($stream);
            }
            $message->asbody->estimatedDataSize = $streamsize;
        }
        else {
            $body = $this->mapiReadStream($stream, $streamsize);
            $message->body = str_replace("\n","\r\n", w2u(str_replace("\r", "", $body)));
            $message->bodysize = $streamsize;
            $message->bodytruncated = 0;
        }

        return true;
    }

    /**
     * Reads from a mapi stream, if it's set. If not, returns an empty string.
     *
     * @param resource $stream
     * @param int $size
     *
     * @access private
     * @return string
     */
    private function mapiReadStream($stream, $size) {
        if (!$stream || $size == 0) {
            return "";
        }
        return mapi_stream_read($stream, $size);
    }

    /**
     * A wrapper for mapi_inetmapi_imtoinet function.
     *
     * @param MAPIMessage       $mapimessage
     * @param SyncObject        $message
     *
     * @access private
     * @return boolean
     */
    private function imtoinet($mapimessage, &$message) {
        $mapiEmail = mapi_getprops($mapimessage, array(PR_EC_IMAP_EMAIL));
        $stream = false;
        if (isset($mapiEmail[PR_EC_IMAP_EMAIL]) || MAPIUtils::GetError(PR_EC_IMAP_EMAIL, $mapiEmail) == MAPI_E_NOT_ENOUGH_MEMORY) {
            $stream = mapi_openproperty($mapimessage, PR_EC_IMAP_EMAIL, IID_IStream, 0, 0);
            ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->imtoinet(): using PR_EC_IMAP_EMAIL as full RFC822 message");
        }
        else {
            $addrbook = $this->getAddressbook();
            $stream = mapi_inetmapi_imtoinet($this->session, $addrbook, $mapimessage, array('use_tnef' => -1, 'ignore_missing_attachments' => 1));
        }
        if (is_resource($stream)) {
            $mstreamstat = mapi_stream_stat($stream);
            $streamsize = $mstreamstat["cb"];
            if (isset($streamsize)) {
                if (Request::GetProtocolVersion() >= 12.0) {
                    if (!isset($message->asbody))
                        $message->asbody = new SyncBaseBody();
                    $message->asbody->data = MAPIStreamWrapper::Open($stream);
                    $message->asbody->estimatedDataSize = $streamsize;
                    $message->asbody->truncated = 0;
                }
                else {
                    $message->mimedata = MAPIStreamWrapper::Open($stream);
                    $message->mimesize = $streamsize;
                    $message->mimetruncated = 0;
                }
                unset($message->body, $message->bodytruncated);
                return true;
            }
        }
        ZLog::Write(LOGLEVEL_ERROR, "MAPIProvider->imtoinet(): got no stream or content from mapi_inetmapi_imtoinet()");

        return false;
    }

    /**
     * Sets the message body.
     *
     * @param MAPIMessage       $mapimessage
     * @param ContentParameters $contentparameters
     * @param SyncObject        $message
     */
    private function setMessageBody($mapimessage, $contentparameters, &$message) {
        //get the available body preference types
        $bpTypes = $contentparameters->GetBodyPreference();
        if ($bpTypes !== false) {
            ZLog::Write(LOGLEVEL_DEBUG, sprintf("BodyPreference types: %s", implode(', ', $bpTypes)));
            //do not send mime data if the client requests it
            if (($contentparameters->GetMimeSupport() == SYNC_MIMESUPPORT_NEVER) && ($key = array_search(SYNC_BODYPREFERENCE_MIME, $bpTypes)!== false)) {
                unset($bpTypes[$key]);
                ZLog::Write(LOGLEVEL_DEBUG, sprintf("Remove mime body preference type because the device required no mime support. BodyPreference types: %s", implode(', ', $bpTypes)));
            }
            //get the best fitting preference type
            $bpReturnType = Utils::GetBodyPreferenceBestMatch($bpTypes);
            ZLog::Write(LOGLEVEL_DEBUG, sprintf("GetBodyPreferenceBestMatch: %d", $bpReturnType));
            $bpo = $contentparameters->BodyPreference($bpReturnType);
            ZLog::Write(LOGLEVEL_DEBUG, sprintf("bpo: truncation size:'%d', allornone:'%d', preview:'%d'", $bpo->GetTruncationSize(), $bpo->GetAllOrNone(), $bpo->GetPreview()));

            // Android Blackberry expects a full mime message for signed emails
            // @see https://jira.z-hub.io/projects/ZP/issues/ZP-1154
            // @TODO change this when refactoring
            $props = mapi_getprops($mapimessage, array(PR_MESSAGE_CLASS));
            if (isset($props[PR_MESSAGE_CLASS]) &&
                    stripos($props[PR_MESSAGE_CLASS], 'IPM.Note.SMIME.MultipartSigned') !== false &&
                    ($key = array_search(SYNC_BODYPREFERENCE_MIME, $bpTypes) !== false)) {
                ZLog::Write(LOGLEVEL_DEBUG, sprintf("MAPIProvider->setMessageBody(): enforcing SYNC_BODYPREFERENCE_MIME type for a signed message"));
                $bpReturnType = SYNC_BODYPREFERENCE_MIME;
            }

            $this->setMessageBodyForType($mapimessage, $bpReturnType, $message);
            //only set the truncation size data if device set it in request
            if (    $bpo->GetTruncationSize() != false &&
                    $bpReturnType != SYNC_BODYPREFERENCE_MIME &&
                    $message->asbody->estimatedDataSize > $bpo->GetTruncationSize()
                ) {

                // Truncated plaintext requests are used on iOS for the preview in the email list. All images and links should be removed - see https://jira.z-hub.io/browse/ZP-1025
                if ($bpReturnType == SYNC_BODYPREFERENCE_PLAIN) {
                    ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->setMessageBody(): truncated plain-text body requested, stripping all links and images");
                    // Get more data because of the filtering it's most probably going down in size. It's going to be truncated to the correct size below.
                    $plainbody = stream_get_contents($message->asbody->data, $bpo->GetTruncationSize() * 5);
                    $message->asbody->data = StringStreamWrapper::Open(preg_replace('/<http(s){0,1}:\/\/.*?>/i', '', $plainbody));
                }

                // truncate data stream
                ftruncate($message->asbody->data, $bpo->GetTruncationSize());
                $message->asbody->truncated = 1;
            }
            // set the preview or windows phones won't show the preview of an email
            if (Request::GetProtocolVersion() >= 14.0 && $bpo->GetPreview()) {
                $message->asbody->preview = Utils::Utf8_truncate(MAPIUtils::readPropStream($mapimessage, PR_BODY), $bpo->GetPreview());
            }
        }
        else {
            // Override 'body' for truncation
            $truncsize = Utils::GetTruncSize($contentparameters->GetTruncation());
            $this->setMessageBodyForType($mapimessage, SYNC_BODYPREFERENCE_PLAIN, $message);

            if($message->bodysize > $truncsize) {
                $message->body = Utils::Utf8_truncate($message->body, $truncsize);
                $message->bodytruncated = 1;
            }

            if (!isset($message->body) || strlen($message->body) == 0)
                $message->body = " ";

            if ($contentparameters->GetMimeSupport() == SYNC_MIMESUPPORT_ALWAYS) {
                //set the html body for iphone in AS 2.5 version
                $this->imtoinet($mapimessage, $message);
            }
        }
    }

    /**
    * Sets properties for an email message.
    *
    * @param mixed             $mapimessage
    * @param SyncMail          $message
    *
    * @access private
    * @return void
    */
    private function setFlag($mapimessage, &$message){
        // do nothing if protocoll version is lower than 12.0 as flags haven't been defined before
        if (Request::GetProtocolVersion() < 12.0 ) return;

        $message->flag = new SyncMailFlags();

        $this->getPropsFromMAPI($message->flag, $mapimessage, MAPIMapping::GetMailFlagsMapping());
    }

    /**
     * Sets information from SyncBaseBody type for a MAPI message.
     *
     * @param SyncBaseBody $asbody
     * @param array $props
     * @param array $appointmentprops
     *
     * @access private
     * @return void
     */
    private function setASbody($asbody, &$props, $appointmentprops) {
        // TODO: fix checking for the length
        if (isset($asbody->type) && isset($asbody->data) /*&& strlen($asbody->data) > 0*/) {
            switch ($asbody->type) {
                case SYNC_BODYPREFERENCE_PLAIN:
                default:
                //set plain body if the type is not in valid range
                    $props[$appointmentprops["body"]] = stream_get_contents($asbody->data);
                    break;
                case SYNC_BODYPREFERENCE_HTML:
                    $props[$appointmentprops["html"]] = stream_get_contents($asbody->data);
                    break;
                case SYNC_BODYPREFERENCE_RTF:
                    break;
                case SYNC_BODYPREFERENCE_MIME:
                    break;
            }
        }
        else {
            ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->setASbody either type or data are not set. Setting to empty body");
            $props[$appointmentprops["body"]] = "";
        }
    }

    /**
     * Get MAPI addressbook object.
     *
     * @access private
     * @return MAPIAddressbook object to be used with mapi_ab_* or false on failure
     */
    private function getAddressbook() {
        if (isset($this->addressbook) && $this->addressbook) {
            return $this->addressbook;
        }
        $this->addressbook = mapi_openaddressbook($this->session);
        $result = mapi_last_hresult();
        if ($result && $this->addressbook === false) {
            ZLog::Write(LOGLEVEL_ERROR, sprintf("MAPIProvider->getAddressbook error opening addressbook 0x%X", $result));
            return false;
        }
        return $this->addressbook;
    }

    /**
     * Gets the required store properties.
     *
     * @access private
     * @return array
     */
    public function GetStoreProps() {
        if (!isset($this->storeProps) || empty($this->storeProps)) {
            ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->GetStoreProps(): Getting store properties.");
            $this->storeProps = mapi_getprops($this->store, array(PR_IPM_SUBTREE_ENTRYID, PR_IPM_OUTBOX_ENTRYID, PR_IPM_WASTEBASKET_ENTRYID, PR_IPM_SENTMAIL_ENTRYID, PR_ENTRYID, PR_IPM_PUBLIC_FOLDERS_ENTRYID, PR_IPM_FAVORITES_ENTRYID, PR_MAILBOX_OWNER_ENTRYID));
            // make sure all properties are set
            if(!isset($this->storeProps[PR_IPM_WASTEBASKET_ENTRYID])) {
                $this->storeProps[PR_IPM_WASTEBASKET_ENTRYID] = false;
            }
            if(!isset($this->storeProps[PR_IPM_SENTMAIL_ENTRYID])) {
                $this->storeProps[PR_IPM_SENTMAIL_ENTRYID] = false;
            }
            if(!isset($this->storeProps[PR_IPM_OUTBOX_ENTRYID])) {
                $this->storeProps[PR_IPM_OUTBOX_ENTRYID] = false;
            }
            if(!isset($this->storeProps[PR_IPM_PUBLIC_FOLDERS_ENTRYID])) {
                $this->storeProps[PR_IPM_PUBLIC_FOLDERS_ENTRYID] = false;
            }
        }
        return $this->storeProps;
    }

    /**
     * Gets the required inbox properties.
     *
     * @access private
     * @return array
     */
    private function getInboxProps() {
        if (!isset($this->inboxProps) || empty($this->inboxProps)) {
            ZLog::Write(LOGLEVEL_DEBUG, "MAPIProvider->getInboxProps(): Getting inbox properties.");
            $this->inboxProps = array();
            $inbox = mapi_msgstore_getreceivefolder($this->store);
            if ($inbox) {
                $this->inboxProps = mapi_getprops($inbox, array(PR_ENTRYID, PR_IPM_DRAFTS_ENTRYID, PR_IPM_TASK_ENTRYID, PR_IPM_APPOINTMENT_ENTRYID, PR_IPM_CONTACT_ENTRYID, PR_IPM_NOTE_ENTRYID, PR_IPM_JOURNAL_ENTRYID));
                // make sure all properties are set
                if(!isset($this->inboxProps[PR_ENTRYID])) {
                    $this->inboxProps[PR_ENTRYID] = false;
                }
                if(!isset($this->inboxProps[PR_IPM_DRAFTS_ENTRYID])) {
                    $this->inboxProps[PR_IPM_DRAFTS_ENTRYID] = false;
                }
                if(!isset($this->inboxProps[PR_IPM_TASK_ENTRYID])) {
                    $this->inboxProps[PR_IPM_TASK_ENTRYID] = false;
                }
                if(!isset($this->inboxProps[PR_IPM_APPOINTMENT_ENTRYID])) {
                    $this->inboxProps[PR_IPM_APPOINTMENT_ENTRYID] = false;
                }
                if(!isset($this->inboxProps[PR_IPM_CONTACT_ENTRYID])) {
                    $this->inboxProps[PR_IPM_CONTACT_ENTRYID] = false;
                }
                if(!isset($this->inboxProps[PR_IPM_NOTE_ENTRYID])) {
                    $this->inboxProps[PR_IPM_NOTE_ENTRYID] = false;
                }
                if(!isset($this->inboxProps[PR_IPM_JOURNAL_ENTRYID])) {
                    $this->inboxProps[PR_IPM_JOURNAL_ENTRYID] = false;
                }
            }
        }
        return $this->inboxProps;
    }

    /**
     * Gets the required store root properties.
     *
     * @access private
     * @return array
     */
    private function getRootProps() {
        if (!isset($this->rootProps)) {
            $root = mapi_msgstore_openentry($this->store, null);
            $this->rootProps = mapi_getprops($root, array(PR_IPM_OL2007_ENTRYIDS));
        }
        return $this->rootProps;
    }

    /**
     * Returns an array with entryids of some special folders.
     *
     * @access private
     * @return array
     */
    private function getSpecialFoldersData() {
        // The persist data of an entry in PR_IPM_OL2007_ENTRYIDS consists of:
        //      PersistId - e.g. RSF_PID_SUGGESTED_CONTACTS (2 bytes)
        //      DataElementsSize - size of DataElements field (2 bytes)
        //      DataElements - array of PersistElement structures (variable size)
        //          PersistElement Structure consists of
        //              ElementID - e.g. RSF_ELID_ENTRYID (2 bytes)
        //              ElementDataSize - size of ElementData (2 bytes)
        //              ElementData - The data for the special folder identified by the PersistID (variable size)
        if (empty($this->specialFoldersData)) {
            $this->specialFoldersData = array();
            $rootProps = $this->getRootProps();
            if (isset($rootProps[PR_IPM_OL2007_ENTRYIDS])) {
                $persistData = $rootProps[PR_IPM_OL2007_ENTRYIDS];
                while (strlen($persistData) > 0) {
                    // PERSIST_SENTINEL marks the end of the persist data
                    if (strlen($persistData) == 4 && $persistData == PERSIST_SENTINEL) {
                        break;
                    }
                    $unpackedData = unpack("vdataSize/velementID/velDataSize", substr($persistData, 2, 6));
                    if (isset($unpackedData['dataSize']) && isset($unpackedData['elementID']) && $unpackedData['elementID'] == RSF_ELID_ENTRYID && isset($unpackedData['elDataSize'])) {
                        $this->specialFoldersData[] = substr($persistData, 8, $unpackedData['elDataSize']);
                        // Add PersistId and DataElementsSize lenghts to the data size as they're not part of it
                        $persistData = substr($persistData, $unpackedData['dataSize'] + 4);
                    }
                    else {
                        ZLog::Write(LOGLEVEL_INFO, "MAPIProvider->getSpecialFoldersData(): persistent data is not valid");
                        break;
                    }
                }
            }
        }
        return $this->specialFoldersData;
    }

    /**
     * Extracts email address from PR_SEARCH_KEY property if possible.
     *
     * @param string $searchKey
     * @access private
     * @see https://jira.z-hub.io/browse/ZP-1178
     *
     * @return string
     */
    private function getEmailAddressFromSearchKey($searchKey) {
        if (strpos($searchKey, ':') !== false && strpos($searchKey, '@') !== false) {
            ZLog::Write(LOGLEVEL_INFO, "MAPIProvider->getEmailAddressFromSearchKey(): fall back to PR_SEARCH_KEY or PR_SENT_REPRESENTING_SEARCH_KEY to resolve user and get email address");
            return trim(strtolower(explode(':', $searchKey)[1]));
        }
        return "";
    }

    /**
     * Returns categories for a message.
     *
     * @param binary $parentsourcekey
     * @param binary $sourcekey
     *
     * @access public
     * @return array or false on failure
     */
    public function GetMessageCategories($parentsourcekey, $sourcekey) {
        $entryid = mapi_msgstore_entryidfromsourcekey($this->store, $parentsourcekey, $sourcekey);
        if (!$entryid) {
            ZLog::Write(LOGLEVEL_INFO, sprintf("MAPIProvider->GetMessageCategories(): Couldn't retrieve message, sourcekey: '%s', parentsourcekey: '%s'", bin2hex($sourcekey), bin2hex($parentsourcekey)));
            return false;
        }
        $mapimessage = mapi_msgstore_openentry($this->store, $entryid);
        $emailMapping = MAPIMapping::GetEmailMapping();
        $emailMapping = array("categories" => $emailMapping["categories"]);
        $messageCategories = $this->getProps($mapimessage, $emailMapping);
        if (isset($messageCategories[$emailMapping["categories"]]) && is_array($messageCategories[$emailMapping["categories"]])) {
            return $messageCategories[$emailMapping["categories"]];
        }
        return false;
    }
}
