configuration_event_handler.php
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Created: Sun, Sep 28, 12:44 AM

configuration_event_handler.php
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	<?php
	/**
	* @version $Id: configuration_event_handler.php 15698 2013-02-19 11:33:17Z alex $
	* @package In-Portal
	* @copyright Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
	* @license GNU/GPL
	* In-Portal is Open Source software.
	* This means that this software may have been modified pursuant
	* the GNU General Public License, and as distributed it includes
	* or is derivative of works licensed under the GNU General Public License
	* or other free or open source software licenses.
	* See http://www.in-portal.org/license for copyright notices and details.
	*/

	defined('FULL_PATH') or die('restricted access!');

	class ConfigurationEventHandler extends kDBEventHandler {

	/**
	* Allows to override standard permission mapping
	*
	* @return void
	* @access protected
	* @see kEventHandler::$permMapping
	*/
	protected function mapPermissions()
	{
	parent::mapPermissions();

	$permissions = Array (
	'OnGenerateMaintenancePage' => Array ('self' => 'add\|edit'),
	);

	$this->permMapping = array_merge($this->permMapping, $permissions);
	}

	/**
	* Changes permission section to one from REQUEST, not from config
	*
	* @param kEvent $event
	* @return bool
	* @access public
	*/
	public function CheckPermission(kEvent $event)
	{
	$event->setEventParam('PermSection', $this->Application->GetVar('section'));
	return parent::CheckPermission($event);
	}

	/**
	* Apply any custom changes to list's sql query
	*
	* @param kEvent $event
	* @return void
	* @access protected
	* @see kDBEventHandler::OnListBuild()
	*/
	protected function SetCustomQuery(kEvent $event)
	{
	parent::SetCustomQuery($event);

	$object = $event->getObject();
	/* @var $object kDBList */

	$module = $this->Application->GetVar('module');
	$section = $this->Application->GetVar('section');

	$object->addFilter('module_filter', '%1$s.ModuleOwner = ' . $this->Conn->qstr($module));
	$object->addFilter('section_filter', '%1$s.Section = ' . $this->Conn->qstr($section));

	$can_change = $this->Application->ConfigValue('AllowAdminConsoleInterfaceChange');

	if ( !$can_change && !$this->Application->isDebugMode() ) {
	$object->addFilter('interface_change_filter', '%1$s.VariableName NOT IN ("AdminConsoleInterface", "AllowAdminConsoleInterfaceChange")');
	}

	if ( defined('IS_INSTALL') && IS_INSTALL ) {
	$object->addFilter('install_filter', '%1$s.Install = 1');
	}

	$object->addFilter('visible_filter', '%1$s.Heading <> ""');
	}

	/**
	* Presets new system setting fields
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnPreCreate(kEvent $event)
	{
	parent::OnPreCreate($event);

	$object = $event->getObject();
	/* @var $object kDBItem */

	$object->SetDBField('Section', $this->Application->GetVar('section'));
	$object->SetDBField('ModuleOwner', $this->Application->GetVar('module'));
	}

	/**
	* Sets custom validation
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnAfterItemLoad(kEvent $event)
	{
	static $default_field_options = null;

	parent::OnAfterItemLoad($event);

	$object = $event->getObject();
	/* @var $object kDBItem */

	// ability to validate each configuration variable separately
	if ( !isset($default_field_options) ) {
	$default_field_options = $object->GetFieldOptions('VariableValue');
	}

	$new_field_options = $default_field_options;
	$validation = $object->GetDBField('Validation');

	if ( $validation ) {
	$new_field_options = array_merge($new_field_options, unserialize($validation));
	}

	$object->SetFieldOptions('VariableValue', $new_field_options);
	}

	/**
	* Performs custom validation
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemValidate(kEvent $event)
	{
	parent::OnBeforeItemValidate($event);

	$object = $event->getObject();
	/* @var $object kDBItem */

	// if password field is empty, then don't update
	if ( $object->GetDBField('ElementType') == 'password' ) {
	if ( trim($object->GetDBField('VariableValue')) != '' ) {
	$password_formatter = $this->Application->recallObject('kPasswordFormatter');
	/* @var $password_formatter kPasswordFormatter */

	$object->SetDBField('VariableValue', $password_formatter->hashPassword($object->GetDBField('VariableValue')));
	}
	}

	$this->_processCountryState($event);

	$variable_name = $object->GetDBField('VariableName');
	$new_value = $object->GetDBField('VariableValue');

	if ( $variable_name == 'AdminConsoleInterface' ) {
	$can_change = $this->Application->ConfigValue('AllowAdminConsoleInterfaceChange');

	if ( ($new_value != $object->GetOriginalField('VariableValue')) && !$can_change ) {
	$object->SetError('VariableValue', 'not_allowed', 'la_error_OperationNotAllowed');
	}
	}
	elseif ( $variable_name == 'HardMaintenanceTemplate' ) {
	$compile = $event->MasterEvent->getEventParam('compile_maintenance_template');
	$compile = $compile \|\| $new_value != $object->GetOriginalField('VariableValue');

	if ( $compile && !$this->_generateMaintenancePage($new_value) ) {
	$object->SetError('VariableValue', 'template_file_missing', 'la_error_TemplateFileMissing');
	}
	}
	elseif ( $variable_name == 'DefaultEmailRecipients' ) {
	$email_event_data = $this->Application->GetVar('email-template_' . $event->Prefix);
	$object->SetDBField('VariableValue', $email_event_data[0]['Recipients']);
	}

	$sections_helper = $this->Application->recallObject('SectionsHelper');
	/* @var $sections_helper kSectionsHelper */

	$section = $object->GetDBField('Section');

	if ( $section && !$sections_helper->getSectionData($section) ) {
	$object->SetError('Section', 'unknown_section');
	}
	}

	/**
	* Checks, that state belongs to selected country
	*
	* @param kEvent $event
	* @access protected
	*/
	protected function _processCountryState(kEvent $event)
	{
	$object = $event->getObject();
	/* @var $object kDBItem */

	$country_iso = $this->_getCountryByState($event);
	$state_name = $object->GetDBField('VariableValue');

	if ( !$country_iso \|\| !$state_name ) {
	return;
	}

	$cs_helper = $this->Application->recallObject('CountryStatesHelper');
	/* @var $cs_helper kCountryStatesHelper */

	$state_iso = $cs_helper->getStateIso($state_name, $country_iso);

	if ( $state_iso !== false ) {
	$object->SetDBField('VariableValue', $state_iso);
	}
	else {
	// selected state doesn't belong to selected country
	$object->SetError('VariableValue', 'invalid_state', 'la_InvalidState');
	}
	}

	/**
	* Returns country iso code, that matches current state variable name
	*
	* @param kEvent $event
	* @return bool
	* @access protected
	*/
	protected function _getCountryByState(kEvent $event)
	{
	$object = $event->getObject();
	/* @var $object kDBItem */

	$variable_name = $object->GetDBField('VariableName');

	$state_country_hash = Array (
	'Comm_State' => 'Comm_Country',
	'Comm_Shipping_State' => 'Comm_Shipping_Country'
	);

	if ( !array_key_exists($variable_name, $state_country_hash) ) {
	return false;
	}

	$field_values = $this->Application->GetVar($event->getPrefixSpecial(true));

	$sql = 'SELECT VariableId
	FROM ' . $event->getUnitConfig()->getTableName() . '
	WHERE VariableName = ' . $this->Conn->qstr($state_country_hash[$variable_name]);
	$country_variable_id = $this->Conn->GetOne($sql);

	return $field_values[$country_variable_id]['VariableValue'];
	}

	/**
	* Does custom password setting processing
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemUpdate(kEvent $event)
	{
	parent::OnBeforeItemUpdate($event);

	$object = $event->getObject();
	/* @var $object kDBItem */

	// if password field is empty, then don't update
	if ( $object->GetDBField('ElementType') == 'password' && trim($object->GetDBField('VariableValue')) == '' ) {
	$object->SetFieldOption('VariableValue', 'skip_empty', 1);
	}
	}

	/**
	* Occurs after updating item
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnAfterItemUpdate(kEvent $event)
	{
	static $skin_deleted = false;

	parent::OnAfterItemUpdate($event);

	$object = $event->getObject();
	/* @var $object kDBItem */

	if ( $object->GetDBField('ElementType') == 'password' && trim($object->GetDBField('VariableValue')) == '' ) {
	$object->SetFieldOption('VariableValue', 'skip_empty', 0);
	}

	// allows to check if variable's value was changed now
	$variable_name = $object->GetDBField('VariableName');
	$changed = $this->Application->GetVar($event->getPrefixSpecial() . '_changed', Array ());

	if ( $object->GetDBField('VariableValue') != $object->GetOriginalField('VariableValue') ) {
	$changed[] = $variable_name;
	$this->Application->SetVar($event->getPrefixSpecial() . '_changed', $changed);

	// update value in cache, so other code (during this script run) would use new value
	$this->Application->SetConfigValue($variable_name, $object->GetDBField('VariableValue'), true);
	}

	if ( $variable_name == 'Require_AdminSSL' \|\| $variable_name == 'AdminSSL_URL' ) {
	// when administrative console is moved to SSL mode, then delete skin
	if ( in_array($variable_name, $changed) && !$skin_deleted ) {
	$skin_helper = $this->Application->recallObject('SkinHelper');
	/* @var $skin_helper SkinHelper */

	$skin_file = $skin_helper->getSkinPath();
	if ( file_exists($skin_file) ) {
	unlink($skin_file);
	}

	$skin_deleted = true;
	}
	}
	}

	/**
	* Updates kDBItem
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnUpdate(kEvent $event)
	{
	if ( $this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1) ) {
	$event->status = kEvent::erFAIL;
	return;
	}

	$items_info = $this->Application->GetVar($event->getPrefixSpecial(true));

	// 1. save user selected module root category
	$new_category_id = getArrayValue($items_info, 'ModuleRootCategory', 'VariableValue');
	if ( $new_category_id !== false ) {
	unset($items_info['ModuleRootCategory']);
	}

	$object = $event->getObject( Array('skip_autoload' => true) );
	/* @var $object kDBItem */

	if ( $items_info ) {
	$has_error = false;

	foreach ($items_info as $id => $field_values) {
	$object->Clear(); // clear validation errors from previous variable
	$object->Load($id);
	$object->SetFieldsFromHash($field_values, $this->getRequestProtectedFields($field_values));

	if ( !$object->Update($id) ) {
	// don't stop when error found !
	$has_error = true;
	}
	}

	$event->status = $has_error ? kEvent::erFAIL : kEvent::erSUCCESS;
	}

	if ( $event->status == kEvent::erSUCCESS ) {
	$event->SetRedirectParam('action_completed', 1);

	if ( $new_category_id !== false ) {
	// root category was submitted
	$module = $this->Application->GetVar('module');
	$root_category_id = $this->Application->findModule('Name', $module, 'RootCat');

	if ( $root_category_id != $new_category_id ) {
	// root category differs from one in db
	$fields_hash = Array ('RootCat' => $new_category_id);
	$this->Conn->doUpdate($fields_hash, TABLE_PREFIX . 'Modules', 'Name = ' . $this->Conn->qstr($module));
	}
	}

	// reset cache
	$changed = $this->Application->GetVar($event->getPrefixSpecial() . '_changed', Array ());
	$require_refresh = Array ('AdvancedUserManagement', 'Site_Name', 'AdminConsoleInterface', 'UsePopups');

	$refresh_sections = array_intersect($require_refresh, $changed);
	$require_full_refresh = Array ('Site_Name', 'AdminConsoleInterface');

	if ( array_intersect($require_full_refresh, $changed) ) {
	$event->SetRedirectParam('refresh_all', 1);
	}
	elseif ( $refresh_sections ) {
	$event->SetRedirectParam('refresh_tree', 1);
	}

	if ( $refresh_sections ) {
	// reset sections too, because of AdvancedUserManagement
	$this->Application->DeleteSectionCache();
	}

	$this->Application->DeleteUnitCache($changed);
	}
	else{
	$errors = $this->Application->GetVar('errors_' . $event->getPrefixSpecial());

	if ( $errors ) {
	// because we have list out there, and this is item
	$this->Application->SetVar('first_error', key($errors));
	$this->Application->removeObject($event->getPrefixSpecial());
	}
	}

	// keeps module and section in REQUEST to ensure, that last admin template will work
	$event->SetRedirectParam('module', $this->Application->GetVar('module'));
	$event->SetRedirectParam('section', $this->Application->GetVar('section'));
	}

	/**
	* Process items from selector (selected_ids var, key - prefix, value - comma separated ids)
	*
	* @param kEvent $event
	*/
	function OnProcessSelected($event)
	{
	$selected_ids = $this->Application->GetVar('selected_ids');
	$this->Application->StoreVar('ModuleRootCategory', $selected_ids['c']);

	$event->SetRedirectParam('opener', 'u');
	}

	/**
	* Generates maintenance page
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnGenerateMaintenancePage(kEvent $event)
	{
	$event->setEventParam('compile_maintenance_template', 1);

	$event->CallSubEvent('OnUpdate');
	}

	/**
	* Generates HTML version of hard maintenance template
	*
	* @param string $template
	* @return bool
	* @access protected
	*/
	protected function _generateMaintenancePage($template = null)
	{
	if ( !isset($template) ) {
	$template = $this->Application->ConfigValue('HardMaintenanceTemplate');
	}

	$curl_helper = $this->Application->recallObject('CurlHelper');
	/* @var $curl_helper kCurlHelper */

	$html = $curl_helper->Send($this->Application->BaseURL() . '?t=' . $template);

	if ( $curl_helper->isGoodResponseCode() ) {
	file_put_contents(WRITEABLE . DIRECTORY_SEPARATOR . 'maintenance.html', $html);

	return true;
	}

	return false;
	}

	/**
	* Returns auto-complete values for ajax-dropdown
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnSuggestValues(kEvent $event)
	{
	if ( !$this->Application->isAdminUser ) {
	// very careful here, because this event allows to
	// view every object field -> limit only to logged-in admins
	return;
	}

	$event->status = kEvent::erSTOP;

	$field = $this->Application->GetVar('field');
	$cur_value = $this->Application->GetVar('cur_value');

	$object = $event->getObject();
	/* @var $object kDBItem */

	if ( !$field \|\| !$cur_value \|\| !$object->isField($field) ) {
	return;
	}

	$limit = $this->Application->GetVar('limit');
	if ( !$limit ) {
	$limit = 20;
	}

	$sql = 'SELECT DISTINCT ' . $field . ', ModuleOwner
	FROM ' . $event->getUnitConfig()->getTableName() . '
	WHERE ' . $field . ' LIKE ' . $this->Conn->qstr('%' . $cur_value . '%') . '
	ORDER BY ' . $field . ' ASC';
	$raw_suggestions = $this->Conn->Query($sql);

	$suggestions = Array ();
	$this->Application->XMLHeader();

	foreach ($raw_suggestions as $raw_suggestion) {
	$suggestion = $raw_suggestion[$field];

	if ( !isset($suggestions[$suggestion]) ) {
	$suggestions[$suggestion] = Array ();
	}

	$suggestions[$suggestion][] = $raw_suggestion['ModuleOwner'];
	}

	array_splice($suggestions, $limit);

	echo '<suggestions>';
	$of_label = $this->Application->Phrase('la_From', false);

	foreach ($suggestions as $suggestion_value => $suggestion_modules) {
	$suggestion_module = in_array('In-Portal', $suggestion_modules) ? 'In-Portal' : implode(', ', $suggestion_modules);
	$suggestion_title = $suggestion_value . ' <em style="color: grey;">' . $of_label . ' ' . $suggestion_module . '</em>';

	echo '<item value="' . htmlspecialchars($suggestion_value, null, CHARSET) . '">' . htmlspecialchars($suggestion_title, null, CHARSET) . '</item>';
	}

	echo '</suggestions>';
	}

	/**
	* Prefills module dropdown
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnAfterConfigRead(kEvent $event)
	{
	parent::OnAfterConfigRead($event);

	$options = Array ();

	foreach ($this->Application->ModuleInfo as $module_name => $module_info) {
	if ( $module_name == 'Core' ) {
	continue;
	}

	$options[$module_name] = $module_name;

	if ( $module_name == 'In-Portal' ) {
	$options['In-Portal:Users'] = 'In-Portal:Users';
	}
	}

	$config = $event->getUnitConfig();

	$fields = $config->getFields();
	$fields['ModuleOwner']['options'] = $options;
	$config->setFields($fields);
	}
	}

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