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518 lines
18 KiB
PHP
518 lines
18 KiB
PHP
<?php
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/**
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* Managesieve Forward Engine
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*
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* Engine part of Managesieve plugin implementing UI and backend access.
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*
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* Copyright (C) 2011-2017, Kolab Systems AG
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/.
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*/
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class rcube_sieve_forward extends rcube_sieve_engine
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{
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protected $error;
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protected $script_name;
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protected $forward = array();
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function actions()
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{
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$error = $this->start('forward');
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// find current forward rule
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if (!$error) {
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$this->forward_rule();
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$this->forward_post();
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}
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$this->plugin->add_label('forward.saving');
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$this->rc->output->add_handlers(array(
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'forwardform' => array($this, 'forward_form'),
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));
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$this->rc->output->set_pagetitle($this->plugin->gettext('forward'));
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$this->rc->output->send('managesieve.forward');
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}
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/**
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* Find and load sieve script with/for forward rule
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*
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* @param string $script_name Optional script name
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*
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* @return int Connection status: 0 on success, >0 on failure
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*/
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protected function load_script($script_name = null)
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{
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if ($this->script_name !== null) {
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return 0;
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}
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$list = $this->list_scripts();
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$master = $this->rc->config->get('managesieve_kolab_master');
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$included = array();
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$this->script_name = false;
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// first try the active script(s)...
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if (!empty($this->active)) {
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// Note: there can be more than one active script on KEP:14-enabled server
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foreach ($this->active as $script) {
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if ($this->sieve->load($script)) {
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foreach ($this->sieve->script->as_array() as $rule) {
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if (!empty($rule['actions'])) {
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if ($rule['actions'][0]['type'] == 'redirect') {
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$this->script_name = $script;
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return 0;
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}
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else if (empty($master) && $rule['actions'][0]['type'] == 'include') {
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$included[] = $rule['actions'][0]['target'];
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}
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}
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}
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}
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}
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// ...else try scripts included in active script (not for KEP:14)
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foreach ($included as $script) {
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if ($this->sieve->load($script)) {
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foreach ($this->sieve->script->as_array() as $rule) {
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if (!empty($rule['actions']) && $rule['actions'][0]['type'] == 'redirect') {
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$this->script_name = $script;
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return 0;
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}
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}
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}
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}
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}
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// try all other scripts
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if (!empty($list)) {
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// else try included scripts
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foreach (array_diff($list, $included, $this->active) as $script) {
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if ($this->sieve->load($script)) {
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foreach ($this->sieve->script->as_array() as $rule) {
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if (!empty($rule['actions']) && $rule['actions'][0]['type'] == 'redirect') {
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$this->script_name = $script;
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return 0;
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}
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}
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}
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}
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// none of the scripts contains existing forward rule
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// use any (first) active or just existing script (in that order)
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if (!empty($this->active)) {
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$this->sieve->load($this->script_name = $this->active[0]);
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}
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else {
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$this->sieve->load($this->script_name = $list[0]);
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}
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}
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return $this->sieve->error();
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}
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private function forward_rule()
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{
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if ($this->script_name === false || $this->script_name === null || !$this->sieve->load($this->script_name)) {
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return;
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}
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$list = array();
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$active = in_array($this->script_name, $this->active);
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// find (first) simple forward rule that can be expressed with the minimal settings
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foreach ($this->script as $idx => $rule) {
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if (empty($this->forward) && !empty($rule['actions']) && $rule['actions'][0]['type'] == 'redirect') {
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$ignore_rule = false;
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$target = null;
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$stop_found = false;
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foreach ($rule['actions'] as $act) {
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if ($stop_found) {
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// we might loose information if there rules after the stop
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$ignore_rule = true;
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}
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if ($act['type'] == 'keep') {
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$action = 'copy';
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}
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else if ($act['type'] == 'stop') {
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// we might loose information if there rules after the stop
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$stop_found = true;
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}
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else if ($act['type'] == 'discard') {
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$action = 'redirect';
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}
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else if ($act['type'] == 'redirect') {
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if (!empty($target)) {
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// we cannot use this rule, because there are multiple targets
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$ignore_rule = true;
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}
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else {
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$action = $act['copy'] ? 'copy' : 'redirect';
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$target = $act['target'];
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}
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}
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else {
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// we cannot use this rule, because there are unknown commands, and we don't want to overwrite them.
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$ignore_rule = true;
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}
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}
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if (count($rule['tests']) != 1 || $rule['tests'][0]['test'] != "true" || $rule['tests'][0]['not'] != null) {
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// ignore rules that have special conditions
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$ignore_rule = true;
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}
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if (!$ignore_rule) {
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$this->forward = array_merge($rule['actions'][0], array(
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'idx' => $idx,
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'disabled' => $rule['disabled'] || !$active,
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'name' => $rule['name'],
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'tests' => $rule['tests'],
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'action' => $action ?: 'keep',
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'target' => $target,
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));
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}
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}
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else if ($active) {
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$list[$idx] = $rule['name'];
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}
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}
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$this->forward['list'] = $list;
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}
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private function forward_post()
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{
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if (empty($_POST)) {
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return;
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}
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$date_extension = in_array('date', $this->exts);
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$regex_extension = in_array('regex', $this->exts);
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$status = rcube_utils::get_input_value('forward_status', rcube_utils::INPUT_POST);
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$action = rcube_utils::get_input_value('forward_action', rcube_utils::INPUT_POST);
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$target = rcube_utils::get_input_value('action_target', rcube_utils::INPUT_POST, true);
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$forward_action['type'] = 'forward';
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$forward_action['reason'] = $this->strip_value(str_replace("\r\n", "\n", $reason));
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$forward_action['subject'] = trim($subject);
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$forward_action['from'] = trim($from);
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$forward_tests = (array) $this->forward['tests'];
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if ($action == 'redirect' || $action == 'copy') {
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if (empty($target) || !rcube_utils::check_email($target)) {
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$error = 'noemailwarning';
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}
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}
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if (empty($forward_tests)) {
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$forward_tests = (array) $this->rc->config->get('managesieve_forward_test', array(array('test' => 'true')));
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}
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if (!$error) {
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$rule = $this->forward;
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$rule['type'] = 'if';
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$rule['name'] = $rule['name'] ?: $this->plugin->gettext('forward');
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$rule['disabled'] = $status == 'off';
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$rule['tests'] = $forward_tests;
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$rule['join'] = $date_extension ? count($forward_tests) > 1 : false;
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$rule['actions'] = array($forward_action);
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$rule['after'] = $after;
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if ($action && $action != 'keep') {
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$rule['actions'][] = array(
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'type' => $action == 'discard' ? 'discard' : 'redirect',
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'copy' => $action == 'copy',
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'target' => $action != 'discard' ? $target : '',
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);
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}
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if ($this->save_forward_script($rule)) {
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$this->rc->output->show_message('managesieve.forwardsaved', 'confirmation');
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$this->rc->output->send();
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}
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}
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$this->rc->output->show_message($error ?: 'managesieve.saveerror', 'error');
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$this->rc->output->send();
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}
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/**
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* Independent forward form
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*/
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public function forward_form($attrib)
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{
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// build FORM tag
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$form_id = $attrib['id'] ?: 'form';
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$out = $this->rc->output->request_form(array(
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'id' => $form_id,
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'name' => $form_id,
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'method' => 'post',
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'task' => 'settings',
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'action' => 'plugin.managesieve-forward',
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'noclose' => true
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) + $attrib);
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// form elements
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$status = new html_select(array('name' => 'forward_status', 'id' => 'forward_status'));
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$action = new html_select(array('name' => 'forward_action', 'id' => 'forward_action'));
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$status->add($this->plugin->gettext('forward.on'), 'on');
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$status->add($this->plugin->gettext('forward.off'), 'off');
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if (in_array('copy', $this->exts)) {
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$action->add($this->plugin->gettext('forward.copy'), 'copy');
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}
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$action->add($this->plugin->gettext('forward.redirect'), 'redirect');
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// force domain selection in redirect email input
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$domains = (array) $this->rc->config->get('managesieve_domains');
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$redirect = $this->forward['action'] == 'redirect' || $this->forward['action'] == 'copy';
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if (!empty($domains)) {
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sort($domains);
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$domain_select = new html_select(array('name' => 'action_domain', 'id' => 'action_domain'));
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$domain_select->add(array_combine($domains, $domains));
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if ($redirect && $this->forward['target']) {
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$parts = explode('@', $this->forward['target']);
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if (!empty($parts)) {
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$this->forward['domain'] = array_pop($parts);
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$this->forward['target'] = implode('@', $parts);
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}
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}
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}
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// redirect target
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$action_target = '<span id="action_target_span" class="input-group">'
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. '<input type="text" name="action_target" id="action_target"'
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. ' value="' .($redirect ? rcube::Q($this->forward['target'], 'strict', false) : '') . '"'
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. (!empty($domains) ? ' size="20"' : ' size="35"') . '/>'
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. (!empty($domains) ? ' <span class="input-group-prepend input-group-append"><span class="input-group-text">@</span></span> '
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. $domain_select->show($this->forward['domain']) : '')
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. '</span>';
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// Message tab
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$table = new html_table(array('cols' => 2));
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$table->add('title', html::label('forward_action', $this->plugin->gettext('forward.action')));
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$table->add('forward input-group input-group-combo', $action->show($this->forward['action']) . ' ' . $action_target);
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$table->add('title', html::label('forward_status', $this->plugin->gettext('forward.status')));
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$table->add(null, $status->show(!isset($this->forward['disabled']) || $this->forward['disabled'] ? 'off' : 'on'));
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$out .= $table->show($attrib);
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$out .= '</form>';
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$this->rc->output->add_gui_object('sieveform', $form_id);
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return $out;
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}
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/**
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* Saves forward script (adding some variables)
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*/
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protected function save_forward_script($rule)
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{
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// if script does not exist create a new one
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if ($this->script_name === null || $this->script_name === false) {
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$this->script_name = $this->rc->config->get('managesieve_script_name');
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if (empty($this->script_name)) {
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$this->script_name = 'roundcube';
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}
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// use default script contents
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if (!$this->rc->config->get('managesieve_kolab_master')) {
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$script_file = $this->rc->config->get('managesieve_default');
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if ($script_file && is_readable($script_file)) {
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$content = file_get_contents($script_file);
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}
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}
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// create and load script
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if ($this->sieve->save_script($this->script_name, $content)) {
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$this->sieve->load($this->script_name);
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}
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}
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$script_active = in_array($this->script_name, $this->active);
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// re-order rules if needed
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if (isset($rule['after']) && $rule['after'] !== '') {
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// reset original forward rule
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if (isset($this->forward['idx'])) {
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$this->script[$this->forward['idx']] = null;
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}
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// add at target position
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if ($rule['after'] >= count($this->script) - 1) {
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$this->script[] = $rule;
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}
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else {
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$script = array();
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foreach ($this->script as $idx => $r) {
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if ($r) {
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$script[] = $r;
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}
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if ($idx == $rule['after']) {
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$script[] = $rule;
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}
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}
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$this->script = $script;
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}
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$this->script = array_values(array_filter($this->script));
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}
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// update original forward rule if it exists
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else if (isset($this->forward['idx'])) {
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$this->script[$this->forward['idx']] = $rule;
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}
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// otherwise put forward rule on top
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else {
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array_unshift($this->script, $rule);
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}
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// if the script was not active, we need to de-activate
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// all rules except the forward rule, but only if it is not disabled
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if (!$script_active && !$rule['disabled']) {
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foreach ($this->script as $idx => $r) {
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if (empty($r['actions']) || $r['actions'][0]['type'] != 'forward') {
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$this->script[$idx]['disabled'] = true;
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}
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}
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}
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if (!$this->sieve->script) {
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return false;
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}
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$this->sieve->script->content = $this->script;
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// save the script
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$saved = $this->save_script($this->script_name);
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// activate the script
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if ($saved && !$script_active && !$rule['disabled']) {
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$this->activate_script($this->script_name);
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}
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return $saved;
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}
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/**
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* API: get forward rule
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*
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* @return array forward rule information
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*/
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public function get_forward()
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{
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$this->exts = $this->sieve->get_extensions();
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$this->init_script();
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$this->forward_rule();
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$forward = array(
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'supported' => $this->exts,
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'enabled' => empty($this->forward['disabled']),
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'action' => $this->forward['action'],
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'target' => $this->forward['target'],
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);
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return $forward;
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}
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/**
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* API: set forward rule
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*
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* @param array $forward forward rule information (see self::get_forward())
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*
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* @return bool True on success, False on failure
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*/
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public function set_forward($data)
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{
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$this->exts = $this->sieve->get_extensions();
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$this->error = false;
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$this->init_script();
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$this->forward_rule();
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$forward['type'] = 'forward';
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if ($data['action'] == 'redirect' || $data['action'] == 'copy') {
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if (empty($data['target']) || !rcube_utils::check_email($data['target'])) {
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$this->error = "Invalid address in action taget: " . $data['target'];
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return false;
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}
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}
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else if ($data['action']) {
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$this->error = "Unsupported forward action: " . $data['action'];
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return false;
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}
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if (empty($forward_tests)) {
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$forward_tests = (array) $this->rc->config->get('managesieve_forward_test', array(array('test' => 'true')));
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}
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$rule = $this->forward;
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$rule['type'] = 'if';
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$rule['name'] = $rule['name'] ?: 'Out-of-Office';
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$rule['disabled'] = isset($data['enabled']) && !$data['enabled'];
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$rule['tests'] = $forward_tests;
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$rule['join'] = $date_extension ? count($forward_tests) > 1 : false;
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$rule['actions'] = array($forward);
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if ($data['action'] && $data['action'] != 'keep') {
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$rule['actions'][] = array(
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'type' => $data['action'] == 'discard' ? 'discard' : 'redirect',
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'copy' => $data['action'] == 'copy',
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'target' => $data['action'] != 'discard' ? $data['target'] : '',
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);
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}
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return $this->save_forward_script($rule);
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}
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/**
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* API: connect to managesieve server
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*/
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public function connect($username, $password)
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{
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$error = parent::connect($username, $password);
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if ($error) {
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return $error;
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}
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return $this->load_script();
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}
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/**
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* API: Returns last error
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*
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* @return string Error message
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*/
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public function get_error()
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{
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return $this->error;
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}
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}
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