LDAPAccountManager/lam/lib/modules/kolabSharedFolder.inc

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<?php
/*
$Id$
This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
Copyright (C) 2013 Roland Gruber
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* Manages Kolab shared folders.
*
* @package modules
* @author Roland Gruber
*/
/**
* Manages Kolab shared folders.
*
* @package modules
*/
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class kolabSharedFolder extends baseModule { // TODO folder type
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/** cache for mailHost values */
private $mailHostCache = null;
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/** list of folder types (label => id) */
private $folderTypes = array();
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/**
* Creates a new kolabSharedFolder object.
*
* @param string $scope account type (user, group, host)
*/
function __construct($scope) {
// call parent constructor
parent::__construct($scope);
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$this->folderTypes = array(
// TODO reactivate types when stable 3.1 is released
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/*_('Shared address book') => 'addressbook',
_('Shared calendar') => 'calendar',
_('Shared journal') => 'journal',
_('Shared tasks') => 'task',*/
_('Shared mail folder') => 'mail',
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);
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}
/**
* Returns meta data that is interpreted by parent class
*
* @return array array with meta data
*
* @see baseModule::get_metaData()
*/
function get_metaData() {
$return = array();
// icon
$return['icon'] = 'kolab.png';
// manages host accounts
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$return["account_types"] = array('kolabSharedFolderType');
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// alias name
$return["alias"] = _("Kolab shared folder");
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// this is a base module
$return["is_base"] = true;
// RDN attribute
$return["RDN"] = array("cn" => "normal");
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// module dependencies
$return['dependencies'] = array('depends' => array(), 'conflicts' => array());
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// LDAP filter
$return["ldap_filter"] = array('or' => "(objectClass=kolabSharedFolder)");
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// managed object classes
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$return['objectClasses'] = array('kolabSharedFolder', 'mailrecipient');
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// managed attributes
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$return['attributes'] = array('cn', 'kolabAllowSMTPRecipient', 'kolabAllowSMTPSender', 'kolabDeleteflag', 'acl',
'alias', 'kolabDelegate', 'kolabFolderType', 'kolabTargetFolder', 'mailHost', 'mail');
// profile options
$profileContainer = new htmlTable();
$profileContainer->addElement(new htmlTableExtendedInputField(_('Mail server'), 'kolab_mailHost', null, 'mailHost'), true);
$return['profile_options'] = $profileContainer;
// profile checks
$return['profile_checks']['kolab_mailHost'] = array(
'type' => 'ext_preg',
'regex' => 'DNSname',
'error_message' => $this->messages['mailHost'][0]);
// profile mappings
$return['profile_mappings'] = array(
'kolab_mailHost' => 'mailHost',
);
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// help Entries
$return['help'] = array(
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'cn' => array(
"Headline" => _("Name"), 'attr' => 'cn',
"Text" => _("Please enter a name for this folder.")
),
'mail' => array (
"Headline" => _("Email address"), 'attr' => 'mail',
"Text" => _("The folder's email address.")
),
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'kolabAllowSMTPRecipient' => array (
"Headline" => _('Allowed recepients'), 'attr' => 'kolabAllowSMTPRecipient',
"Text" => _('Describes the allowed or disallowed SMTP recipient addresses for mail sent by this account (e.g. "domain.tld" or "-user@domain.tld").')
),
'kolabAllowSMTPRecipientList' => array (
"Headline" => _('Allowed recepients'), 'attr' => 'kolabAllowSMTPRecipient',
"Text" => _('Describes the allowed or disallowed SMTP recipient addresses for mail sent by this account (e.g. "domain.tld" or "-user@domain.tld").')
. ' ' . _("Multiple values are separated by semicolon.")
),
'kolabAllowSMTPSender' => array (
"Headline" => _('Allowed senders'), 'attr' => 'kolabAllowSMTPSender',
"Text" => _('Describes the allowed or disallowed SMTP addresses sending mail to this account (e.g. "domain.tld" or "-user@domain.tld").')
),
'kolabAllowSMTPSenderList' => array (
"Headline" => _('Allowed senders'), 'attr' => 'kolabAllowSMTPSender',
"Text" => _('Describes the allowed or disallowed SMTP addresses sending mail to this account (e.g. "domain.tld" or "-user@domain.tld").')
. ' ' . _("Multiple values are separated by semicolon.")
),
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'delegate' => array(
"Headline" => _("Delegates"), 'attr' => 'kolabDelegate',
"Text" => _("Delegates are allowed to act on behalf of the shared folder. This property is checked when using the Kolab smtp daemon (Postfix) to send emails.")
),
'delegateList' => array(
"Headline" => _("Delegates"), 'attr' => 'kolabDelegate',
"Text" => _("This is a comma separated list of delegates.")
),
'alias' => array(
"Headline" => _("Email alias"), 'attr' => 'alias',
"Text" => _("Email alias for this account.")
),
'aliasList' => array(
"Headline" => _("Email alias list"), 'attr' => 'alias',
"Text" => _("This is a comma separated list of eMail aliases.")
),
'mailHost' => array(
"Headline" => _("Mailbox home server"), 'attr' => 'mailHost',
"Text" => _("The name of the server where the mailbox is located.")
),
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'kolabTargetFolder' => array(
"Headline" => _("Target IMAP folder"), 'attr' => 'kolabTargetFolder',
"Text" => _("The folder on the server where the shared folder is located (e.g. user/myfolder@example.com).")
),
'kolabFolderType' => array(
"Headline" => _("Type"), 'attr' => 'kolabFolderType',
"Text" => _("Specifies the folder type (e.g. shared mail folder).")
),
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'deleteFlag' => array(
"Headline" => _("Mark for deletion"), 'attr' => 'kolabDeleteflag',
"Text" => _("This will set a special flag on the account which tells Kolabd to remove it. Use this to cleanly delete Kolab accounts (e.g. this removes mail boxes).")
),
);
// upload fields
$return['upload_columns'] = array(
array(
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'name' => 'kolabSharedFolder_cn',
'description' => _('Name'),
'help' => 'cn',
'example' => 'folder',
'required' => true
),
array(
'name' => 'kolabSharedFolder_mail',
'description' => _('Email address'),
'help' => 'mail',
'example' => _('user@company.com'),
'required' => true
),
array(
'name' => 'kolabSharedFolder_mailHost',
'description' => _('Mailbox home server'),
'help' => 'mailHost',
'example' => 'localhost',
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),
array(
'name' => 'kolabSharedFolder_kolabTargetFolder',
'description' => _('Target IMAP folder'),
'help' => 'kolabTargetFolder',
'example' => 'user/myfolder@example.com',
'required' => true
),
array(
'name' => 'kolabSharedFolder_kolabFolderType',
'description' => _('Type'),
'help' => 'kolabFolderType',
'example' => 'mail',
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'required' => true
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),
array(
'name' => 'kolabSharedFolder_kolabAllowSMTPRecipient',
'description' => _('Allowed recepients'),
'help' => 'kolabAllowSMTPRecipientList',
'example' => '.com; -.net',
),
array(
'name' => 'kolabSharedFolder_kolabAllowSMTPSender',
'description' => _('Allowed senders'),
'help' => 'kolabAllowSMTPSenderList',
'example' => '.com; -.net',
),
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array(
'name' => 'kolabSharedFolder_aliases',
'description' => _('Email aliases'),
'help' => 'aliasList',
'example' => 'user@domain,user2@domain'
),
array(
'name' => 'kolabSharedFolder_delegates',
'description' => _('Delegates'),
'help' => 'delegateList',
'example' => 'user@domain,user2@domain'
),
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);
// available PDF fields
$return['PDF_fields'] = array(
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'cn' => _('Name'),
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'kolabAllowSMTPRecipient' => _('Allowed recepients'),
'kolabAllowSMTPSender' => _('Allowed senders'),
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'aliases' => _('Email aliases'),
'delegate' => _('Delegates'),
'mailHost' => _('Mailbox home server'),
'mail' => _('Email address'),
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'kolabTargetFolder' => _('Target IMAP folder'),
'kolabFolderType' => _('Type'),
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);
return $return;
}
/**
* This function fills the $messages variable with output messages from this module.
*/
function load_Messages() {
$this->messages['kolabAllowSMTPRecipient'][0] = array('ERROR', _('Allowed recepients'), _('Please enter a valid recepient expression.'));
$this->messages['kolabAllowSMTPRecipient'][1] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_kolabAllowSMTPRecipient', _('Please enter a valid recepient expression.'));
$this->messages['kolabAllowSMTPSender'][0] = array('ERROR', _('Allowed senders'), _('Please enter a valid sender expression.'));
$this->messages['kolabAllowSMTPSender'][1] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_kolabAllowSMTPSender', _('Please enter a valid sender expression.'));
$this->messages['extension'][1] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_addExtension', _('You cannot add the Kolab group and shared folder extension at the same time.'));
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$this->messages['alias'][0] = array('ERROR', _('Email alias is invalid!')); // third array value is set dynamically
$this->messages['alias'][1] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_aliases', _('Email alias list has invalid format!'));
$this->messages['delegate'][0] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_delegates', _('Unknown delegate address: %s'));
$this->messages['mailHost'][0] = array('ERROR', _('Mailbox home server name is invalid!')); // third array value is set dynamically
$this->messages['mailHost'][1] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_mailHost', _('Mailbox home server name is invalid!'));
$this->messages['mail'][0] = array('ERROR', _('Email address'), _('Please enter a valid email address!'));
$this->messages['mail'][1] = array('ERROR', _('Account %s:') . ' kolabSharedFolder_mail', _('Please enter a valid email address!'));
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$this->messages['cn'][0] = array('ERROR', _('Name'), _('Please enter a name.'));
$this->messages['kolabTargetFolder'][0] = array('ERROR', _('Target IMAP folder'), _('Please enter a target folder.'));
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}
/**
* Returns the HTML meta data for the main account page.
*
* @return htmlElement HTML meta data
*/
function display_html_attributes() {
$container = new htmlTable();
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// check if account is marked for deletion
if (isset($this->attributes['kolabDeleteflag'])) {
$container->addElement(new htmlOutputText(_('This account is marked for deletion.')));
return $container;
}
$baseContainer = new htmlTable();
// name
$this->addSimpleInputTextField($baseContainer, 'cn', _('Name'), true);
// mail
$this->addSimpleInputTextField($baseContainer, 'mail', _('Email address'), true);
// mailbox server
if (!isset($this->orig['mailHost'][0])) { // value currently not set
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$this->addSimpleInputTextField($baseContainer, 'mailHost', _('Mailbox home server'));
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}
else { // input is unchangable when set
$baseContainer->addElement(new htmlOutputText(_('Mailbox home server')));
$baseContainer->addElement(new htmlOutputText($this->attributes['mailHost'][0]));
$baseContainer->addElement(new htmlHelpLink('mailHost'), true);
}
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// target folder
$this->addSimpleInputTextField($baseContainer, 'kolabTargetFolder', _('Target IMAP folder'), true);
// folder type
$possibleTypes = $this->folderTypes;
$selectedTypes = array('mail');
if (!empty($this->attributes['kolabFolderType'])) {
$selectedTypes = $this->attributes['kolabFolderType'];
if (!in_array($this->attributes['kolabFolderType'][0], $possibleTypes)) {
$possibleTypes[$this->attributes['kolabFolderType'][0]] = $this->attributes['kolabFolderType'][0];
}
}
$typeSelect = new htmlTableExtendedSelect('kolabFolderType', $possibleTypes, $selectedTypes, _('Type'), 'kolabFolderType');
$typeSelect->setHasDescriptiveElements(true);
$baseContainer->addElement($typeSelect, true);
$baseContainer->addVerticalSpace('10px');
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// allowed recepients
$this->addMultiValueInputTextField($baseContainer, 'kolabAllowSMTPRecipient', _('Allowed recepients'));
// allowed senders
$this->addMultiValueInputTextField($baseContainer, 'kolabAllowSMTPSender', _('Allowed senders'));
$container->addElement($baseContainer, true);
// mail aliases
$container->addElement(new htmlSubTitle(_('Email aliases')), true);
$this->addMultiValueInputTextField($container, 'alias');
// delegates
$delegates = searchLDAPByAttribute('mail', '*', 'inetOrgPerson', array('mail'), array('user'));
for ($i = 0; $i < sizeof($delegates); $i++) {
$delegates[$i] = $delegates[$i]['mail'][0];
}
sort($delegates);
$container->addElement(new htmlSubTitle(_('Delegates')), true);
$delegatesContainer = new htmlTable();
$delegatesContainer->colspan = 3;
if (isset($this->attributes['kolabDelegate'])) {
for ($i = 0; $i < sizeof($this->attributes['kolabDelegate']); $i++) {
$delegatesContainer->addElement(new htmlSelect('delegate' . $i, $delegates, array($this->attributes['kolabDelegate'][$i])));
$delegatesContainer->addElement(new htmlButton('delDelegate' . $i, 'del.png', true));
if ($i == 0) {
$delegatesContainer->addElement(new htmlHelpLink('delegate'));
}
$delegatesContainer->addNewLine();
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}
}
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// input box for new delegate
$delegatesContainer->addElement(new htmlSelect('delegate', $delegates));
$delegatesContainer->addElement(new htmlButton('addDelegate', 'add.png', true));
if (empty($this->attributes['kolabDelegate'])) {
$delegatesContainer->addElement(new htmlHelpLink('delegate'));
}
$container->addElement($delegatesContainer, true);
// delete flag
$this->loadMailHostCache();
if (!$this->getAccountContainer()->isNewAccount && (sizeof($this->mailHostCache) > 0)) {
$deleteContainer = new htmlTable();
$deleteContainer->addElement(new htmlSpacer(null, '20px'), true);
$deleteContainer->addElement(new htmlAccountPageButton(get_class($this), 'deleteFlag', 'open', _('Mark account for deletion')));
$deleteContainer->addElement(new htmlHelpLink('deleteFlag'));
$container->addElement($deleteContainer);
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}
return $container;
}
/**
* Processes user input of the primary module page.
* It checks if all input values are correct and updates the associated LDAP attributes.
*
* @return array list of info/error messages
*/
function process_attributes() {
$errors = array();
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// cn
$this->attributes['cn'][0] = $_POST['cn'];
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if (empty($_POST['cn'])) {
$errors[] = $this->messages['cn'][0];
}
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// mail
$this->attributes['mail'][0] = $_POST['mail'];
if (empty($_POST['mail']) || !get_preg($_POST['mail'], 'email')) {
$errors[] = $this->messages['mail'][0];
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}
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// mailbox server
if (isset($_POST['mailHost'])) {
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if (($_POST['mailHost'] == "") && isset($this->attributes['mailHost'])) {
unset($this->attributes['mailHost']);
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}
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elseif (!empty($_POST['mailHost'])) {
if (get_preg($_POST['mailHost'], 'DNSname')) {
$this->attributes['mailHost'][0] = $_POST['mailHost'];
}
else {
$message = $this->messages['mailHost'][0];
$message[] = $_POST['mailHost'];
$errors[] = $message;
}
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}
}
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// target folder
$this->attributes['kolabTargetFolder'][0] = $_POST['kolabTargetFolder'];
if (empty($_POST['kolabTargetFolder'])) {
$errors[] = $this->messages['kolabTargetFolder'][0];
}
// folder type
$this->attributes['kolabFolderType'][0] = $_POST['kolabFolderType'];
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// allowed recepients
$this->processMultiValueInputTextField('kolabAllowSMTPRecipient', $errors, 'kolabEmailPrefix');
// allowed senders
$this->processMultiValueInputTextField('kolabAllowSMTPSender', $errors, 'kolabEmailPrefix');
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// mail aliases
$this->processMultiValueInputTextField('alias', $errors, 'email');
// check old delegates
$this->attributes['kolabDelegate'] = array();
$i = 0;
while (isset($_POST['delegate' . $i])) {
if (isset($_POST['delDelegate' . $i])) {
$i++;
continue;
}
$this->attributes['kolabDelegate'][] = $_POST['delegate' . $i];
$i++;
}
// check new delegate
if (isset($_POST['addDelegate']) && ($_POST['delegate'] != "")) {
$this->attributes['kolabDelegate'][] = $_POST['delegate'];
}
$this->attributes['kolabDelegate'] = array_unique($this->attributes['kolabDelegate']);
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return $errors;
}
/**
* This function will create the meta HTML code to show a page to mark an account for deletion.
*
* @return htmlElement HTML meta data
*/
function display_html_deleteFlag() {
$return = new htmlTable();
$message = new htmlOutputText(_('Do you really want to mark this account for deletion?'));
$return->addElement($message, true);
$return->addElement(new htmlSpacer(null, '10px'), true);
$serverTable = new htmlTable();
$serverTable->addElement(new htmlTableExtendedSelect('deletionServer', $this->mailHostCache, array(), _('Server'), 'deleteFlag'));
$return->addElement($serverTable, true);
$return->addElement(new htmlSpacer(null, '10px'), true);
$buttonGroup = new htmlGroup();
$buttonGroup->addElement(new htmlAccountPageButton(get_class($this), 'attributes', 'confirm', _('Mark account for deletion')));
$buttonGroup->addElement(new htmlAccountPageButton(get_class($this), 'attributes', 'cancel', _('Cancel')));
$return->addElement($buttonGroup, true);
return $return;
}
/**
* Write variables into object and do some regex checks
*/
function process_deleteFlag() {
if (isset($_POST['form_subpage_kolabSharedFolder_attributes_confirm'])) {
// set delete flag
$this->attributes['kolabDeleteflag'][0] = $_POST['deletionServer'];
}
}
/**
* In this function the LDAP account is built up.
*
* @param array $rawAccounts list of hash arrays (name => value) from user input
* @param array $ids list of IDs for column position (e.g. "posixAccount_uid" => 5)
* @param array $partialAccounts list of hash arrays (name => value) which are later added to LDAP
* @param array $selectedModules list of selected account modules
* @return array list of error messages if any
*/
function build_uploadAccounts($rawAccounts, $ids, &$partialAccounts, $selectedModules) {
$messages = array();
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$delegates = searchLDAPByAttribute(null, null, 'inetOrgPerson', array('mail'), array('user'));
for ($d = 0; $d < sizeof($delegates); $d++) {
if (isset($delegates[$d]['mail'][0])) {
$delegates[$d] = $delegates[$d]['mail'][0];
}
}
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for ($i = 0; $i < sizeof($rawAccounts); $i++) {
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// add object classes
if (!in_array('kolabSharedFolder', $partialAccounts[$i]['objectClass'])) {
$partialAccounts[$i]['objectClass'][] = 'kolabSharedFolder';
}
if (!in_array('mailrecipient', $partialAccounts[$i]['objectClass'])) {
$partialAccounts[$i]['objectClass'][] = 'mailrecipient';
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}
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// cn
$partialAccounts[$i]['cn'] = $rawAccounts[$i][$ids['kolabSharedFolder_cn']];
// mail
if (!get_preg($rawAccounts[$i][$ids['kolabSharedFolder_mail']], 'email')) {
$errMsg = $this->messages['mail'][1];
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array_push($errMsg, array($i));
$messages[] = $errMsg;
}
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else {
$partialAccounts[$i]['mail'] = $rawAccounts[$i][$ids['kolabSharedFolder_mail']];
}
// mailbox server
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if (!empty($rawAccounts[$i][$ids['kolabSharedFolder_mailHost']])) {
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if (get_preg($rawAccounts[$i][$ids['kolabSharedFolder_mailHost']], 'DNSname')) {
$partialAccounts[$i]['mailHost'] = $rawAccounts[$i][$ids['kolabSharedFolder_mailHost']];
}
else {
$errMsg = $this->messages['mailHost'][1];
array_push($errMsg, array($i));
$messages[] = $errMsg;
}
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}
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// target folder
$partialAccounts[$i]['kolabTargetFolder'] = $rawAccounts[$i][$ids['kolabSharedFolder_kolabTargetFolder']];
// folder type
$partialAccounts[$i]['kolabFolderType'] = $rawAccounts[$i][$ids['kolabSharedFolder_kolabFolderType']];
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// allowed recipients
if (!empty($rawAccounts[$i][$ids['kolabSharedFolder_kolabAllowSMTPRecipient']])) {
$mails = preg_split('/;[ ]*/', $rawAccounts[$i][$ids['kolabSharedFolder_kolabAllowSMTPRecipient']]);
for ($m = 0; $m < sizeof($mails); $m++) {
if (get_preg($mails[$m], 'kolabEmailPrefix')) {
$partialAccounts[$i]['kolabAllowSMTPRecipient'][] = $mails[$m];
}
else {
$errMsg = $this->messages['kolabAllowSMTPRecipient'][1];
array_push($errMsg, array($i));
$messages[] = $errMsg;
break;
}
}
}
// allowed senders
if (!empty($rawAccounts[$i][$ids['kolabSharedFolder_kolabAllowSMTPSender']])) {
$mails = preg_split('/;[ ]*/', $rawAccounts[$i][$ids['kolabSharedFolder_kolabAllowSMTPSender']]);
for ($m = 0; $m < sizeof($mails); $m++) {
if (get_preg($mails[$m], 'kolabEmailPrefix')) {
$partialAccounts[$i]['kolabAllowSMTPSender'][] = $mails[$m];
}
else {
$errMsg = $this->messages['kolabAllowSMTPSender'][1];
array_push($errMsg, array($i));
$messages[] = $errMsg;
break;
}
}
}
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// add mail aliases
if ($rawAccounts[$i][$ids['kolabSharedFolder_aliases']] != "") {
$aliases = explode(',', $rawAccounts[$i][$ids['kolabSharedFolder_aliases']]);
// check format
for ($a = 0; $a < sizeof($aliases); $a++) {
if (get_preg($aliases[$a], 'email')) {
$partialAccounts[$i]['alias'][] = $aliases[$a];
}
// invalid format
else {
$errMsg = $this->messages['alias'][1];
array_push($errMsg, array($i));
$messages[] = $errMsg;
}
}
}
// add delegates
if ($rawAccounts[$i][$ids['kolabSharedFolder_delegates']] != "") {
$newDelegates = explode(',', $rawAccounts[$i][$ids['kolabSharedFolder_delegates']]);
// check format
for ($d = 0; $d < sizeof($newDelegates); $d++) {
if (in_array($newDelegates[$d], $delegates)) {
$partialAccounts[$i]['kolabDelegate'][] = $newDelegates[$d];
}
// invalid format
else {
$errMsg = $this->messages['delegate'][0];
array_push($errMsg, array($i, $newDelegates[$d]));
$messages[] = $errMsg;
}
}
}
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}
return $messages;
}
/**
* Returns a list of PDF entries
*/
function get_pdfEntries() {
$return = array();
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$this->addSimplePDFField($return, 'cn', _('Name'));
$this->addSimplePDFField($return, 'mail', _('Email address'));
$this->addSimplePDFField($return, 'mailHost', _('Mailbox home server'));
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$this->addSimplePDFField($return, 'kolabTargetFolder', _('Target IMAP folder'));
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$this->addSimplePDFField($return, 'kolabAllowSMTPRecipient', _('Allowed recepients'));
$this->addSimplePDFField($return, 'kolabAllowSMTPSender', _('Allowed senders'));
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$this->addSimplePDFField($return, 'aliases', _('Email aliases'), 'alias');
$this->addSimplePDFField($return, 'delegate', _('Delegates'), 'kolabDelegate');
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if (!empty($this->attributes['kolabFolderType'])) {
$type = $this->attributes['kolabFolderType'][0];
$typeList = array_flip($this->folderTypes);
if (isset($typeList[$type])) {
$type = $typeList[$type];
}
$return[get_class($this) . '_kolabFolderType'] = array('<block><key>' . _('Type') . '</key><value>' . $type . '</value></block>');
}
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return $return;
}
/**
* Loads the list of mail hosts into the cache.
*/
private function loadMailHostCache() {
if ($this->mailHostCache != null) {
return;
}
$results = searchLDAPByFilter('(mailHost=*)', array('mailHost'), array('user'));
$this->mailHostCache = array();
foreach ($results as $result) {
if (isset($result['mailhost'][0]) && !in_array_ignore_case($result['mailhost'][0], $this->mailHostCache)) {
$this->mailHostCache[] = $result['mailhost'][0];
}
}
}
}
?>