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moodle/admin/langimport.php
Petr Skoda 431ac39634 MDL-26623 fix file permissions 
The permissions are now going to be verified as part of the weekly release process.
2011-03-01 12:26:49 +01:00

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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Fetches language packages from download.moodle.org server
*
* Language packages are available at http://download.moodle.org/langpack/2.0/
* in ZIP format together with a file languages.md5 containing their hashes
* and meta info.
* Locally, language packs are saved into $CFG->dataroot/lang/
*
* @package core
* @copyright 2005 Yu Zhang
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(dirname(dirname(__FILE__)).'/config.php');
require_once($CFG->libdir.'/adminlib.php');
require_once($CFG->libdir.'/filelib.php');
require_once($CFG->libdir.'/componentlib.class.php');
$thisversion = '2.0'; // TODO this information should be taken from version.php or similar source
admin_externalpage_setup('langimport');
if (!empty($CFG->skiplangupgrade)) {
echo $OUTPUT->header();
echo $OUTPUT->box(get_string('langimportdisabled', 'admin'));
echo $OUTPUT->footer();
die;
}
$mode = optional_param('mode', 0, PARAM_INT); // action
$pack = optional_param('pack', array(), PARAM_SAFEDIR); // pack to install
$uninstalllang = optional_param('uninstalllang', '', PARAM_LANG); // installed pack to uninstall
$confirm = optional_param('confirm', 0, PARAM_BOOL); // uninstallation confirmation
define('INSTALLATION_OF_SELECTED_LANG', 2);
define('DELETION_OF_SELECTED_LANG', 4);
define('UPDATE_ALL_LANG', 5);
//reset and diagnose lang cache permissions
remove_dir($CFG->dataroot.'/cache/languages');
if (file_exists($CFG->dataroot.'/cache/languages')) {
print_error('cannotdeletelangcache', 'error');
}
get_string_manager()->reset_caches();
$notice_ok = array();
$notice_error = array();
if (($mode == INSTALLATION_OF_SELECTED_LANG) and confirm_sesskey() and !empty($pack)) {
set_time_limit(0);
make_upload_directory('temp');
make_upload_directory('lang');
if (is_array($pack)) {
$packs = $pack;
} else {
$packs = array($pack);
}
foreach ($packs as $pack) {
if ($cd = new component_installer('http://download.moodle.org', 'langpack/'.$thisversion, $pack.'.zip', 'languages.md5', 'lang')) {
$status = $cd->install();
switch ($status) {
case COMPONENT_ERROR:
if ($cd->get_error() == 'remotedownloaderror') {
$a = new stdClass();
$a->url = 'http://download.moodle.org/langpack/'.$thisversion.'/'.$pack.'.zip';
$a->dest = $CFG->dataroot.'/lang';
print_error($cd->get_error(), 'error', 'langimport.php', $a);
} else {
print_error($cd->get_error(), 'error', 'langimport.php');
}
break;
case COMPONENT_INSTALLED:
$notice_ok[] = get_string('langpackinstalled','admin',$pack);
if ($parentlang = get_parent_language($pack)) {
// install also parent pack if specified
if ($cd = new component_installer('http://download.moodle.org', 'langpack/'.$thisversion,
$parentlang.'.zip', 'languages.md5', 'lang')) {
$cd->install();
}
}
break;
case COMPONENT_UPTODATE:
break;
}
} else {
echo $OUTPUT->notification('Had an unspecified error with the component installer, sorry.');
}
}
}
if ($mode == DELETION_OF_SELECTED_LANG and !empty($uninstalllang)) {
if ($uninstalllang == 'en') {
$notice_error[] = 'English language pack can not be uninstalled';
} else if (!$confirm and confirm_sesskey()) {
echo $OUTPUT->header();
echo $OUTPUT->confirm(get_string('uninstallconfirm', 'admin', $uninstalllang),
'langimport.php?mode='.DELETION_OF_SELECTED_LANG.'&uninstalllang='.$uninstalllang.'&confirm=1',
'langimport.php');
echo $OUTPUT->footer();
die;
} else if (confirm_sesskey()) {
$dest1 = $CFG->dataroot.'/lang/'.$uninstalllang;
$dest2 = $CFG->dirroot.'/lang/'.$uninstalllang;
$rm1 = false;
$rm2 = false;
if (file_exists($dest1)){
$rm1 = remove_dir($dest1);
}
if (file_exists($dest2)){
$rm2 = remove_dir($dest2);
}
if ($rm1 or $rm2) {
$notice_ok[] = get_string('langpackremoved','admin');
} else { //nothing deleted, possibly due to permission error
$notice_error[] = 'An error has occurred, language pack is not completely uninstalled, please check file permissions';
}
}
}
if ($mode == UPDATE_ALL_LANG) {
set_time_limit(0);
if (!$availablelangs = get_remote_list_of_languages()) {
print_error('cannotdownloadlanguageupdatelist', 'error');
}
$md5array = array(); // (string)langcode => (string)md5
foreach ($availablelangs as $alang) {
$md5array[$alang[0]] = $alang[1];
}
// filter out unofficial packs
$currentlangs = array_keys(get_string_manager()->get_list_of_translations(true));
$updateablelangs = array();
foreach ($currentlangs as $clang) {
if (!array_key_exists($clang, $md5array)) {
$notice_ok[] = get_string('langpackupdateskipped', 'admin', $clang);
continue;
}
$dest1 = $CFG->dataroot.'/lang/'.$clang;
$dest2 = $CFG->dirroot.'/lang/'.$clang;
if (file_exists($dest1.'/langconfig.php') || file_exists($dest2.'/langconfig.php')){
$updateablelangs[] = $clang;
}
}
// then filter out packs that have the same md5 key
$neededlangs = array(); // all the packs that needs updating
foreach ($updateablelangs as $ulang) {
if (!is_installed_lang($ulang, $md5array[$ulang])) {
$neededlangs[] = $ulang;
}
}
make_upload_directory('temp');
make_upload_directory('lang');
$updated = false; // any packs updated?
foreach ($neededlangs as $pack) {
if ($pack == 'en') {
continue;
}
// delete old directories
$dest1 = $CFG->dataroot.'/lang/'.$pack;
$dest2 = $CFG->dirroot.'/lang/'.$pack;
$rm1 = false;
$rm2 = false;
if (file_exists($dest1)) {
if (!remove_dir($dest1)) {
$notice_error[] = 'Could not delete old directory '.$dest1.', update of '.$pack.' failed, please check permissions.';
continue;
}
}
if (file_exists($dest2)) {
if (!remove_dir($dest2)) {
$notice_error[] = 'Could not delete old directory '.$dest2.', update of '.$pack.' failed, please check permissions.';
continue;
}
}
// copy and unzip new version
if ($cd = new component_installer('http://download.moodle.org', 'langpack/'.$thisversion, $pack.'.zip', 'languages.md5', 'lang')) {
$status = $cd->install();
switch ($status) {
case COMPONENT_ERROR:
if ($cd->get_error() == 'remotedownloaderror') {
$a = new stdClass();
$a->url = 'http://download.moodle.org/langpack/'.$thisversion.'/'.$pack.'.zip';
$a->dest = $CFG->dataroot.'/lang';
print_error($cd->get_error(), 'error', 'langimport.php', $a);
} else {
print_error($cd->get_error(), 'error', 'langimport.php');
}
break;
case COMPONENT_UPTODATE:
// should not get here
break;
case COMPONENT_INSTALLED:
$notice_ok[] = get_string('langpackupdated', 'admin', $pack);
$updated = true;
break;
}
}
}
if ($updated) {
$notice_ok[] = get_string('langupdatecomplete','admin');
} else {
$notice_ok[] = get_string('nolangupdateneeded','admin');
}
}
get_string_manager()->reset_caches();
echo $OUTPUT->header();
echo $OUTPUT->heading(get_string('langimport', 'admin'));
$installedlangs = get_string_manager()->get_list_of_translations(true);
$missingparents = array();
foreach ($installedlangs as $installedlang => $unused) {
$parent = get_parent_language($installedlang);
if (empty($parent) or ($parent === 'en')) {
continue;
}
if (!isset($installedlangs[$parent])) {
$missingparents[$installedlang] = $parent;
}
}
if ($availablelangs = get_remote_list_of_languages()) {
$remote = true;
} else {
$remote = false;
$availablelangs = array();
echo $OUTPUT->box_start();
print_string('remotelangnotavailable', 'admin', $CFG->dataroot.'/lang/');
echo $OUTPUT->box_end();
}
if ($notice_ok) {
$info = implode('<br />', $notice_ok);
echo $OUTPUT->notification($info, 'notifysuccess');
}
if ($notice_error) {
$info = implode('<br />', $notice_error);
echo $OUTPUT->notification($info, 'notifyproblem');
}
if ($missingparents) {
foreach ($missingparents as $l=>$parent) {
$a = new stdClass();
$a->lang = $installedlangs[$l];
$a->parent = $parent;
foreach ($availablelangs as $alang) {
if ($alang[0] == $parent) {
$shortlang = $alang[0];
$a->parent = $alang[2].' ('.$shortlang.')';
}
}
$info = get_string('missinglangparent', 'admin', $a);
echo $OUTPUT->notification($info, 'notifyproblem');
}
}
echo $OUTPUT->box_start();
echo html_writer::start_tag('table');
echo html_writer::start_tag('tr');
// list of installed languages
$url = new moodle_url('/admin/langimport.php', array('mode' => DELETION_OF_SELECTED_LANG));
echo html_writer::start_tag('td', array('valign' => 'top'));
echo html_writer::start_tag('form', array('id' => 'uninstallform', 'action' => $url->out(), 'method' => 'post'));
echo html_writer::start_tag('fieldset');
echo html_writer::label(get_string('installedlangs','admin'), 'uninstalllang');
echo html_writer::empty_tag('br');
echo html_writer::select($installedlangs, 'uninstalllang', '', false, array('size' => 15));
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
echo html_writer::empty_tag('br');
echo html_writer::empty_tag('input', array('type' => 'submit', 'value' => get_string('uninstall','admin')));
echo html_writer::end_tag('fieldset');
echo html_writer::end_tag('form');
if ($remote) {
$url = new moodle_url('/admin/langimport.php', array('mode' => UPDATE_ALL_LANG));
echo html_writer::start_tag('form', array('id' => 'updateform', 'action' => $url->out(), 'method' => 'post'));
echo html_writer::tag('fieldset', html_writer::empty_tag('input', array('type' => 'submit', 'value' => get_string('updatelangs','admin'))));
echo html_writer::end_tag('form');
}
echo html_writer::end_tag('td');
// list of available languages
$options = array();
foreach ($availablelangs as $alang) {
if (!empty($alang[0]) and trim($alang[0]) !== 'en' and !is_installed_lang($alang[0], $alang[1])) {
$options[$alang[0]] = $alang[2].' ('.$alang[0].')';
}
}
if (!empty($options)) {
echo html_writer::start_tag('td', array('valign' => 'top'));
$url = new moodle_url('/admin/langimport.php', array('mode' => INSTALLATION_OF_SELECTED_LANG));
echo html_writer::start_tag('form', array('id' => 'installform', 'action' => $url->out(), 'method' => 'post'));
echo html_writer::start_tag('fieldset');
echo html_writer::label(get_string('availablelangs','install'), 'pack');
echo html_writer::empty_tag('br');
echo html_writer::select($options, 'pack[]', '', false, array('size' => 15, 'multiple' => 'multiple'));
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
echo html_writer::empty_tag('br');
echo html_writer::empty_tag('input', array('type' => 'submit', 'value' => get_string('install','admin')));
echo html_writer::end_tag('fieldset');
echo html_writer::end_tag('form');
echo html_writer::end_tag('td');
}
echo html_writer::end_tag('tr');
echo html_writer::end_tag('table');
echo $OUTPUT->box_end();
echo $OUTPUT->footer();
die();
////////////////////////////////////////////////////////////////////////////////
// Local functions /////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
/**
* checks the md5 of the zip file, grabbed from download.moodle.org,
* against the md5 of the local language file from last update
* @param string $lang
* @param string $md5check
* @return bool
*/
function is_installed_lang($lang, $md5check) {
global $CFG;
$md5file = $CFG->dataroot.'/lang/'.$lang.'/'.$lang.'.md5';
if (file_exists($md5file)){
return (file_get_contents($md5file) == $md5check);
}
return false;
}
/**
* Returns the list of available language packs from download.moodle.org
*
* @return array|bool false if can not download
*/
function get_remote_list_of_languages() {
$source = 'http://download.moodle.org/langpack/2.0/languages.md5';
$availablelangs = array();
if ($content = download_file_content($source)) {
$alllines = explode("\n", $content);
foreach($alllines as $line) {
if (!empty($line)){
$availablelangs[] = explode(',', $line);
}
}
return $availablelangs;
} else {
return false;
}
}
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