forked from extern/egroupware
691 lines
22 KiB
PHP
691 lines
22 KiB
PHP
<?php
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/**
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* EGroupware - Notifications
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package notifications
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* @link http://www.egroupware.org
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* @author Cornelius Weiss <nelius@cwtech.de>
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* @version $Id$
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*/
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if (!defined('SEP')) define('SEP','/');
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/**
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* Notifies users according to their preferences.
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*
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* @abstract NOTE: This is for instant notifications. If you need time dependend notifications use the
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* asyncservices wrapper!
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*
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* This class takes care about the notification-routing. It chooses one or more backends for each
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* given recipient depending on its prefs or falls back to self::_fallback
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*
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* The classes doing the notifications are called notifications_<backend> and should only be
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* called from this class. The backend's job is to deliver ONE message to ONE recipient.
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*
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*/
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final class notifications {
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/**
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* Appname
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*/
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const _appname = 'notifications';
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/**
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* backend to use for fallback reasons
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*/
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const _fallback = 'email_only';
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/**
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* backend to use if EGroupware user has no preferenc set and no default preference set
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*/
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const user_fallback = 'popup_or_email';
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/**
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* registered backends
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* @var array
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*/
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private $backends = array('popup', 'winpopup', 'email', 'sms');
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/**
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* backends to skip even if the user has chosen it
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* this could be set by the calling application
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* @var array
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*/
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private $skip_backends = array();
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/**
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* pre-defined notificaton chains
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* @abstract
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* arrays with name => chain pairs
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* the chain itself consists of an array with framework => action pairs
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* where action defines what to do after the framework has been executed:
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* stop: stop executing notifications
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* fail: do not stop if framework fails, otherwise stop
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* continue: execute next framework
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*
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* @var array
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*/
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private $notification_chains = array(
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'disable' => false, // will be created by $this->get_available_chains
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'email_only' => false, // will be created by $this->get_available_chains
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'all' => false, // will be created by $this->get_available_chains
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'popup_only' => array('popup' => 'stop'),
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'popup_or_email' => array('popup' => 'fail', 'email' => 'stop'),
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'popup_or_sms' => array('popup' => 'fail', 'sms' => 'stop'),
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'popup_and_email' => array('popup' => 'continue', 'email' => 'stop'),
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'popup_and_winpopup' => array('popup' => 'continue', 'winpopup' => 'stop'),
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'winpopup_only' => array('winpopup' => 'stop'),
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'winpopup_or_email' => array('winpopup' => 'fail', 'email' => 'stop'),
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//'winpopup_or_sms' => array('winpopup' => 'fail', 'sms' => 'stop'),
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'winpopup_and_email' => array('winpopup' => 'continue', 'email' => 'stop'),
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'sms_only' => array('sms' => 'stop'),
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);
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/**
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* human readable descriptions for the notification chains
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* @var array
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*/
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private $chains_descriptions = array(
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'disable' => 'do not notify me at all',
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'email_only' => 'E-Mail only',
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'all' => 'all possible notification backends',
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'popup_only' => 'eGroupWare-Popup only',
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'popup_or_email' => 'eGroupWare-Popup first, if that fails notify me by E-Mail',
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'popup_or_sms' => 'eGroupware-Popup first, if that fails notify me by SMS',
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'popup_and_email' => 'eGroupWare-Popup and E-Mail',
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'popup_and_winpopup' => 'eGroupWare-Popup and Windows-Popup',
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'winpopup_only' => 'Windows-Popup only',
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'winpopup_or_email' => 'Windows-Popup first, if that fails notify me by E-Mail',
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//'winpopup_or_sms' => 'Windows-Popup first, if that fails notify me by SMS',
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'winpopup_and_email' => 'Windows-Popup and E-Mail',
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'sms_only' => 'SMS only',
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);
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/**
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* array with objects of receivers
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* @var array
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*/
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private $receivers = array();
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/**
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* object of sender
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* @var object
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*/
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private $sender;
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/**
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* holds notification subject
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* @var string
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*/
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private $subject = '';
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/**
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* holds notification subject for popup
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* @var string
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*/
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private $popupsubject = '';
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/**
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* holds notification message in plaintext
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* @var string
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*/
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private $message_plain = '';
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/**
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* holds notification message in html
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* @var string
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*/
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private $message_html = '';
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/**
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* holds notification message for popup
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* @var string
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*/
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private $message_popup = '';
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/**
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* array with objects of links
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* @var array
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*/
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private $links = array();
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/**
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* array with objects of attachments
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* @var array
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*/
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private $attachments = array();
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/**
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* holds config object (sitewide configuration of app)
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*
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* @var object
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*/
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private $config;
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/**
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* constructor of notifications
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*
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*/
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public function __construct() {
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$this->config = (object) config::read(self::_appname);
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}
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/**
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* Set sender for the current notification
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*
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* @param $_sender object of account
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* as long as the accounts class isn't a nice object,
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* it's an int with the account id or the e-mail address of a non-eGW user
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*/
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public function set_sender($_sender) {
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if(is_object($_sender)) {
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$this->sender = $_sender;
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return true;
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} else {
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// no object atm, we have to handle this and make a pseudo-object
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if(is_numeric($_sender)) {
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$this->sender = (object) $GLOBALS['egw']->accounts->read($_sender);
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return true;
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}
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if(is_string($_sender) && strpos($_sender,'@')) {
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$this->sender = (object) array (
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'account_email' => $this->get_addresspart($_sender,'email'),
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'account_fullname' => $this->get_addresspart($_sender,'fullname'),
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);
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return true;
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}
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}
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return false;
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}
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/**
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* Set receivers for the current notification
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*
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* @param array $_receivers array with objects of accounts
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* as long as the accounts class isn't a nice object,
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* it's an array with the int of the account id or the e-mail address of a non-eGW user
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*/
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public function set_receivers(array $_receivers) {
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$this->receivers = array();
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foreach ($_receivers as $receiver) {
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$this->add_receiver($receiver);
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}
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}
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/**
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* Add single receiver for the current notification
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*
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* @param $_receiver object of account
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* as long as the accounts class isn't a nice object,
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* it's an int with the account id or the e-mail address of a non-eGW user
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*/
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public function add_receiver($_receiver) {
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if(is_object($_receiver)) {
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$this->receivers[] = $_receiver;
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return true;
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} else {
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// no object atm, we have to handle this and make a pseudo-object
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if(is_numeric($_receiver)) {
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$this->receivers[] = (object) $GLOBALS['egw']->accounts->read($_receiver);
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return true;
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}
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if(is_string($_receiver) && strpos($_receiver,'@')) {
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$this->receivers[] = (object) array (
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'account_email' => $this->get_addresspart($_receiver,'email'),
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'account_fullname' => $this->get_addresspart($_receiver,'fullname'),
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);
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return true;
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}
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}
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return false;
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}
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/**
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* sets notification subject
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*
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* @param string $_subject
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*/
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public function set_subject($_subject) {
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$this->subject = $_subject;
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return true;
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}
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/**
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* sets notification subject for popup
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*
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* @param string $_subject
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*/
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public function set_popupsubject($_subject) {
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$this->popupsubject = $_subject;
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return true;
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}
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/**
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* sets notification message
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* @abstract $_message accepts plaintext or html
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* NOTE: There is no XSS prevention in notifications framework!
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* You have to filter userinputs yourselve (e.g. htmlspechialchars() )
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* If you want to set plain AND html messages, just call this function
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* two times, it autodetects the type of your input
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*
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* @param string $_message
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*/
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public function set_message($_message) {
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if(strlen($_message) == strlen(strip_tags($_message))) {
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$this->message_plain = $_message;
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} else {
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$this->message_html = $_message;
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}
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return true;
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}
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/**
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* sets specific popup notification message
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* @abstract $_message accepts plaintext or html
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* NOTE: There is no XSS prevention in notifications framework!
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* You have to filter userinputs yourselve (e.g. htmlspechialchars() )
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*
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* @param string $_message
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*/
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public function set_popupmessage($_message) {
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//popup requires html
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if(strlen($_message) == strlen(strip_tags($_message))) $_message=nl2br($_message);
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$this->message_popup = $_message;
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return true;
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}
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/**
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* sets the notification links
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*
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* @param array $_links link array (like defined in $this->add_link)
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*/
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public function set_links(array $_links) {
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$this->links = array(); // clear array if set
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foreach($_links as $link) {
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if(is_array($link)) {
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$this->add_link($link['text'], $link['view'], $link['popup']);
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}
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}
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return true;
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}
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/**
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* adds a notification link
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*
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* @param string $_text a descriptive text for the link
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* @param array $_view all params needed to view the link (name => value pairs)
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* @param string $_popup if link can be viewed in a popup something like '300x200' otherwise false
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*/
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public function add_link($_text, $_view, $_popup = false) {
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if(!$_view || !$_text) { return false; }
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$this->links[] = (object)array( 'text' => $_text,
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'view' => $_view,
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'popup' => $_popup,
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);
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return true;
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}
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/**
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* sets the notification attachments
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*
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* @param array $_attachments attachment array (like defined in $this->add_attachment)
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*/
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public function set_attachments(array $_attachments) {
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$this->attachments = array(); // clear array if set
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foreach($_attachments as $attachment) {
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if(is_array($attachment)) {
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$this->add_attachment(
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$attachment['string'],
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$attachment['filename'],
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$attachment['encoding'],
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$attachment['type'],
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$attachment['path']
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);
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}
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}
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return true;
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}
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/**
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* adds a notification attachment
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* This method can be used to attach ascii or binary data,
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* such as a BLOB record from a database.
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*
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* @param string $_string Attachment data or null to use $_path
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* @param string $_filename Name of the attachment.
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* @param string $_encoding File encoding (see $Encoding).
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* @param string $_type File extension (MIME) type.
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* @param string $_path optional path to attachment, if !$_string
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*/
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public function add_attachment($_string, $_filename, $_encoding = "base64", $_type = "application/octet-stream", $_path=null) {
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if(!$_string && (!$_path || !file_exists($_path)) || !$_filename) return false;
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$this->attachments[] = (object)array(
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'string' => $_string,
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'filename' => $_filename,
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'encoding' => $_encoding ? $_encoding : "base64",
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'type' => $_type ? $_type : "application/octet-stream",
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'path' => $_path,
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);
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return true;
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}
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/**
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* Sets backends that should be skipped even if the user
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* defined them in its chain
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*
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* @param array $_skip_backends array with names of the backends to be skipped
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* e.g. array('popup', 'winpopup')
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*/
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public function set_skip_backends(array $_skip_backends) {
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$this->skip_backends = $_skip_backends;
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}
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/**
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* sends notifications
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*/
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public function send() {
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if (!is_object($this->sender)) {
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throw new Exception('Error: cannot send notifications. No sender supplied');
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}
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if (!is_array($this->receivers) || count($this->receivers) == 0) {
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throw new Exception('Error: cannot send notifications. No receivers supplied');
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}
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if(!$messages = $this->create_messages($this->message_plain, $this->message_html, $this->message_popup)) {
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throw new Exception('Error: cannot send notifications. No valid messages supplied');
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}
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$available_chains = $this->get_available_chains('routing');
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foreach ($this->receivers as $receiver) {
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$user_notified = false;
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$prepend_message = '';
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$backend_errors = array();
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try {
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// system or non-system user
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if($receiver->account_id && is_numeric($receiver->account_id)) {
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// system user, collect data and check for Status and expire state, skip notification if expired or not active
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$userData = $GLOBALS['egw']->accounts->read($receiver->account_id);
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//error_log(__METHOD__.__LINE__." fetched data for User:".array2string($userData['account_lid']).'#'.$userData['account_type'].'#'.$userData['account_status'].'#'.$GLOBALS['egw']->accounts->is_expired($userData).'#');
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if ($userData && $userData['account_type'] === 'u' &&
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($userData['account_status'] != 'A' || $GLOBALS['egw']->accounts->is_expired($userData)))
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{
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//error_log(__METHOD__.__LINE__." skipped notification for User with Data:".array2string($userData));
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$notification_chain = 'disable';
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continue;
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}
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$receiver->handle = $receiver->account_lid;
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// check if the receiver has rights to run the notifcation app
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$ids = $GLOBALS['egw']->accounts->memberships($receiver->account_id,true);
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$ids[] = $receiver->account_id;
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if ($GLOBALS['egw']->acl->get_specific_rights_for_account($ids,'run','notifications')) {
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// read the users notification chain
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$prefs = new preferences($receiver->account_id);
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$preferences = $prefs->read();
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$preferences = (object)$preferences[self::_appname];
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if($preferences->notification_chain) {
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// fallback: admin disabled user-chosen chain
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if(!$notification_chain = $available_chains[$preferences->notification_chain]) {
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$prepend_message .= lang( 'This eGroupWare notification has been sent to you by mail because your'
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.' chosen notification-chain has been disabled by the administrator.'
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.' Please choose another notification-chain in your preferences!');
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$notification_chain = $available_chains[self::_fallback];
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}
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} else {
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$notification_chain = $available_chains[self::user_fallback]; // fallback: no prefs
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}
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} else {
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$notification_chain = $available_chains[self::_fallback]; // fallback: no rights to app
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}
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} else {
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// non-system user
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$receiver->handle = $receiver->account_email;
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$notification_chain = $available_chains[self::_fallback]; // fallback: non-system user
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}
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if($notification_chain == 'disable') {
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continue; //user disabled notifications
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}
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foreach($notification_chain as $backend => $action) {
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try {
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// check if backend should be skipped
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if( in_array($backend, $this->skip_backends) ) {
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// log as error just for the case too much skipping prevents user from being notified
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$backend_errors[] = $backend.' will be skipped (as defined by calling application)';
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continue;
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}
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$notification_backend = self::_appname.'_'.$backend;
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if(!file_exists(EGW_INCLUDE_ROOT. SEP. self::_appname. SEP. 'inc'. SEP. 'class.'. $notification_backend. '.inc.php')) {
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throw new Exception('file for '.$notification_backend. ' does not exist');
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}
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$obj = new $notification_backend( $this->sender, $receiver, $this->config, $preferences );
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if ( !($obj instanceof notifications_iface) ) {
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unset ( $obj );
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throw new Exception($notification_backend. ' is no implementation of notifications_iface');
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}
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$lsubject = $this->subject;
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if ($backend=='popup' && isset($this->popupsubject) && !empty($this->popupsubject)) $lsubject = $this->popupsubject;
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$obj->send($this->prepend_message($messages, $prepend_message), $lsubject, $this->links, $this->attachments);
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}
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catch (Exception $exception) {
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$backend_errors[] = $notification_backend.' failed: '.$exception->getMessage();
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// try next backend
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if($action == 'fail' || $action == 'continue') {
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continue;
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}
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break; // stop running through chain
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}
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// backend sucseeded
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$user_notified = true;
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if($action == 'stop' || $action == 'fail') { break; } // stop running through chain
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}
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// check if the user has been notified at all
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/*if(!$user_notified) {
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error_log('Error: notification of receiver '.$receiver->handle.' failed for the following reasons:');
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foreach($backend_errors as $id=>$backend_error) {
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error_log($backend_error);
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}
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}*/
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}
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catch (Exception $exception_user) {
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error_log('Error: notification of receiver '.$receiver->handle.' failed: '.$exception_user->getMessage());
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}
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}
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return true;
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}
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/**
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* creates an array with the message as plaintext and html, and optional a html popup message
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*
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* @param string $_message_plain
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* @param string $_message_html
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* @param string $_message_popup
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* @return plain and html message in one array, $messages['plain'] and $messages['html'] and, if exists $messages['popup']
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*/
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private function create_messages($_message_plain = '', $_message_html = '', $_message_popup = '') {
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if(empty($_message_plain) && empty($_message_html) && empty($_message_popup)) { return false; } // no message set
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$messages = array();
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|
|
// create the messages
|
|
if(!empty($_message_plain)) {
|
|
$messages['plain'] = $_message_plain;
|
|
} else {
|
|
$messages['plain'] = strip_tags($_message_html);
|
|
}
|
|
|
|
if(!empty($_message_html)) {
|
|
$messages['html'] = $_message_html;
|
|
} else {
|
|
$messages['html'] = nl2br($_message_plain);
|
|
}
|
|
if (!empty($_message_popup)) $messages['popup']=$_message_popup;
|
|
return $messages;
|
|
}
|
|
|
|
/**
|
|
* prepends another message to the messages array
|
|
*
|
|
* @param array $_messages the messages array from create_messages()
|
|
* @param string $_prepend just a plain message to prepend, no html!
|
|
* @return plain and html message in one array including the prepended message, $messages['plain'] and $messages['html']
|
|
*/
|
|
private function prepend_message(array $_messages, $_prepend = null) {
|
|
if(strlen($_prepend) > 0) {
|
|
foreach($_messages as $key => $value) {
|
|
switch($key) {
|
|
case 'plain':
|
|
$_messages[$key] = $_prepend."\n\n".$value;
|
|
break;
|
|
case 'html':
|
|
// ToDo: move stylesheet to a nicer place
|
|
$_messages[$key] = '<div style="margin:0; padding:1em; margin-bottom: 1em; background-color:orange; border:1px solid red;">'.$_prepend.'</div>'.$value;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return $_messages;
|
|
}
|
|
|
|
/**
|
|
* returns specified part from a given mailaddress
|
|
*
|
|
* @param string $_address
|
|
* @param string $_part
|
|
* @return string chosen part of the address
|
|
*/
|
|
private function get_addresspart($_address, $_part='email') {
|
|
if(strpos($_address,'<') && preg_match('/^(.*)\S?\<(.*)\>/',$_address, $parts)) { // _address contains a fullname part
|
|
$fullname = trim(trim($parts[1]),'\"');
|
|
$email = $parts[2];
|
|
} else {
|
|
$fullname = false;
|
|
$email = $_address;
|
|
}
|
|
switch($_part) {
|
|
case 'fullname':
|
|
return $fullname;
|
|
break;
|
|
case 'email':
|
|
default:
|
|
return $email;
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* returns notification chains based on admin prefs
|
|
* @abstract the available chains can be retrieved in two different output formats:
|
|
* routing: array with common and enabled chains, chain-name as key and the chain-array as value (used for message-routing)
|
|
* human: array with common, enabled and disabled chains, chain-name as key and a human-readable description as value (used for config)
|
|
*
|
|
* @param string $_output one of: 'routing' or 'human', defaults to 'routing'
|
|
* @return array containing notification chains, output like given in $_output
|
|
*/
|
|
public function get_available_chains($_output = 'routing') {
|
|
// determine enabled backends from config
|
|
$enabled_backends = array();
|
|
foreach($this->backends as $id => $backend) {
|
|
switch($backend) {
|
|
case 'email':
|
|
case 'popup':
|
|
$enabled_backends[$backend] = true; // fallback must always be enabled
|
|
break;
|
|
default:
|
|
$param = $backend.'_enable';
|
|
$enabled_backends[$backend] = $this->config->{$param} == true ? true : false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
$enabled_chains = array();
|
|
$disabled_chains = array();
|
|
foreach($this->notification_chains as $key => $chain) {
|
|
$allow_chain = true;
|
|
if(is_array($chain)) {
|
|
foreach($chain as $name => $action) {
|
|
if(!$enabled_backends[$name]) {
|
|
$allow_chain = false; // disable whole chain if one backend is disabled
|
|
}
|
|
}
|
|
if($allow_chain) {
|
|
$enabled_chains[$key] = $chain;
|
|
} else {
|
|
$disabled_chains[$key] = $chain;
|
|
}
|
|
}
|
|
}
|
|
|
|
// common chain
|
|
$common_chains = array();
|
|
$common_chains['disable'] = 'disable';
|
|
$common_chains['email_only'] = array('email' => 'stop');
|
|
// create the 'all' chain from the enabled backends
|
|
$chain_all = array();
|
|
$backend_count = 1;
|
|
foreach($enabled_backends as $backend => $enabled) {
|
|
if($enabled) {
|
|
$chain_all[$backend] = count($enabled_backends) == $backend_count ? 'stop' : 'continue';
|
|
}
|
|
$backend_count++;
|
|
}
|
|
$common_chains['all'] = $chain_all;
|
|
|
|
switch($_output) {
|
|
case 'human':
|
|
$chain_groups = array(
|
|
lang('Common chains') => 'common_chains',
|
|
lang('Enabled chains') => 'enabled_chains',
|
|
lang('Disabled chains') => 'disabled_chains',
|
|
);
|
|
$suffix = '_human';
|
|
// create descriptions for each chain key in each group
|
|
foreach($chain_groups as $name => $arr_name) {
|
|
${$arr_name.$suffix} = array();
|
|
foreach(${$arr_name} as $key => $value) {
|
|
if($arr_name == 'disabled_chains') {
|
|
${$arr_name.$suffix}[$key] = '('.lang('Disabled').') '.lang($this->chains_descriptions[$key]);
|
|
} else {
|
|
${$arr_name.$suffix}[$key] = lang($this->chains_descriptions[$key]);
|
|
}
|
|
}
|
|
}
|
|
// summarize all groups with minimum one chain to the final array
|
|
$chains_final = array();
|
|
foreach($chain_groups as $name => $arr_name) {
|
|
if(is_array(${$arr_name.$suffix}) && count(${$arr_name.$suffix}) > 0) {
|
|
$chains_final[$name] = ${$arr_name.$suffix};
|
|
}
|
|
}
|
|
return $chains_final;
|
|
break;
|
|
|
|
case 'routing':
|
|
default:
|
|
return array_merge($common_chains, $enabled_chains);
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Actions to take when an account is deleted
|
|
*
|
|
* @param settings array with keys account_id and new_owner (new_owner is optional)
|
|
*/
|
|
public function deleteaccount($settings) {
|
|
foreach($this->backends as $backend) {
|
|
$backend_hook = array(self::_appname.'_'.$backend,'deleteaccount');
|
|
if (is_callable($backend_hook)) {
|
|
call_user_func($backend_hook,$settings);
|
|
}
|
|
}
|
|
}
|
|
}
|