328 lines
11 KiB
PHP
328 lines
11 KiB
PHP
<?php
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/**
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2011, StatusNet, Inc.
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*
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* Offline backup queue handler
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*
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* PHP version 5
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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 Affero 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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero 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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* @category Offline backup
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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// This check helps protect against security problems;
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// your code file can't be executed directly from the web.
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exit(1);
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}
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/**
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* Offline backup queue handler
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*
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* @category General
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2011 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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class OfflineBackupQueueHandler extends QueueHandler
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{
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function transport()
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{
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return 'backoff';
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}
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function handle($object)
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{
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$userId = $object;
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$user = User::getKV($userId);
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common_log(LOG_INFO, "Making backup file for user ".$user->nickname);
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$fileName = $this->makeBackupFile($user);
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common_log(LOG_INFO, "Notifying user ".$user->nickname . " of their new backup file.");
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$this->notifyBackupFile($user, $fileName);
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return true;
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}
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function makeBackupFile($user)
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{
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// XXX: this is pretty lose-y; try another way
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$tmpdir = sys_get_temp_dir() . '/offline-backup/' . $user->nickname . '/' . common_date_iso8601(common_sql_now());
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common_log(LOG_INFO, 'Writing backup data to ' . $tmpdir . ' for ' . $user->nickname);
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mkdir($tmpdir, 0700, true);
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$this->dumpNotices($user, $tmpdir);
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$this->dumpFaves($user, $tmpdir);
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$this->dumpSubscriptions($user, $tmpdir);
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$this->dumpSubscribers($user, $tmpdir);
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$this->dumpGroups($user, $tmpdir);
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$fileName = File::filename($user->getProfile(), "backup", "application/atom+xml");
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$fullPath = File::path($fileName);
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$this->makeActivityFeed($user, $tmpdir, $fullPath);
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$this->delTree($tmpdir);
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return $fileName;
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}
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function notifyBackupFile($user, $fileName)
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{
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$fileUrl = File::url($fileName);
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$body = sprintf(_m("The backup file you requested is ready for download.\n\n".
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"%s\n".
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"Thanks for your time,\n",
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"%s\n"),
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$fileUrl,
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common_config('site', 'name'));
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$headers = _mail_prepare_headers('offlinebackup', $user->nickname, $user->nickname);
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mail_to_user($user, _('Backup file ready for download'), $body, $headers);
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}
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function dumpNotices($user, $dir)
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{
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common_log(LOG_INFO, 'dumping notices by ' . $user->nickname . ' to directory ' . $dir);
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$profile = $user->getProfile();
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$stream = new ProfileNoticeStream($profile, $profile);
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$page = 1;
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do {
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$notice = $stream->getNotices(($page-1)*NOTICES_PER_PAGE, NOTICES_PER_PAGE + 1);
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while ($notice->fetch()) {
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try {
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$fname = $dir . '/'. common_date_iso8601($notice->created) . '-notice-' . $notice->id . '.atom';
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$data = $notice->asAtomEntry(false, false, false, null);
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common_log(LOG_INFO, 'dumping notice ' . $notice->id . ' to file ' . $fname);
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file_put_contents($fname, $data);
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$data = null;
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} catch (Exception $e) {
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common_log(LOG_ERR, "Error backing up notice " . $notice->id . ": " . $e->getMessage());
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continue;
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}
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}
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$page++;
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} while ($notice->N > NOTICES_PER_PAGE);
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}
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function dumpFaves($user, $dir)
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{
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common_log(LOG_INFO, 'dumping faves by ' . $user->nickname . ' to directory ' . $dir);
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$page = 1;
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do {
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$fave = Fave::byProfile($user->id, ($page-1)*NOTICES_PER_PAGE, NOTICES_PER_PAGE + 1);
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while ($fave->fetch()) {
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try {
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$fname = $dir . '/'. common_date_iso8601($fave->modified) . '-fave-' . $fave->notice_id . '.atom';
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$act = $fave->asActivity();
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$data = $act->asString(false, false, false);
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common_log(LOG_INFO, 'dumping fave of ' . $fave->notice_id . ' to file ' . $fname);
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file_put_contents($fname, $data);
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$data = null;
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} catch (Exception $e) {
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common_log(LOG_ERR, "Error backing up fave of " . $fave->notice_id . ": " . $e->getMessage());
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continue;
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}
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}
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$page++;
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} while ($fave->N > NOTICES_PER_PAGE);
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}
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function dumpSubscriptions($user, $dir)
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{
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common_log(LOG_INFO, 'dumping subscriptions by ' . $user->nickname . ' to directory ' . $dir);
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$page = 1;
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do {
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$sub = Subscription::bySubscriber($user->id, ($page-1)*PROFILES_PER_PAGE, PROFILES_PER_PAGE + 1);
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while ($sub->fetch()) {
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try {
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if ($sub->subscribed == $user->id) {
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continue;
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}
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$fname = $dir . '/'. common_date_iso8601($sub->created) . '-subscription-' . $sub->subscribed . '.atom';
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$act = $sub->asActivity();
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$data = $act->asString(false, false, false);
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common_log(LOG_INFO, 'dumping sub of ' . $sub->subscribed . ' to file ' . $fname);
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file_put_contents($fname, $data);
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$data = null;
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} catch (Exception $e) {
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common_log(LOG_ERR, "Error backing up subscription to " . $sub->subscribed . ": " . $e->getMessage());
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continue;
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}
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}
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$page++;
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} while ($sub->N > PROFILES_PER_PAGE);
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}
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function dumpSubscribers($user, $dir)
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{
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common_log(LOG_INFO, 'dumping subscribers to ' . $user->nickname . ' to directory ' . $dir);
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$page = 1;
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do {
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$sub = Subscription::bySubscribed($user->id, ($page-1)*PROFILES_PER_PAGE, PROFILES_PER_PAGE + 1);
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while ($sub->fetch()) {
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try {
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if ($sub->subscriber == $user->id) {
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continue;
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}
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$fname = $dir . '/'. common_date_iso8601($sub->created) . '-subscriber-' . $sub->subscriber . '.atom';
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$act = $sub->asActivity();
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$data = $act->asString(false, true, false);
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common_log(LOG_INFO, 'dumping sub by ' . $sub->subscriber . ' to file ' . $fname);
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file_put_contents($fname, $data);
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$data = null;
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} catch (Exception $e) {
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common_log(LOG_ERR, "Error backing up subscription from " . $sub->subscriber . ": " . $e->getMessage());
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continue;
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}
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}
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$page++;
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} while ($sub->N > PROFILES_PER_PAGE);
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}
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function dumpGroups($user, $dir)
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{
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common_log(LOG_INFO, 'dumping memberships of ' . $user->nickname . ' to directory ' . $dir);
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$page = 1;
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do {
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$mem = Group_member::byMember($user->id, ($page-1)*GROUPS_PER_PAGE, GROUPS_PER_PAGE + 1);
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while ($mem->fetch()) {
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try {
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$fname = $dir . '/'. common_date_iso8601($mem->created) . '-membership-' . $mem->group_id . '.atom';
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$act = $mem->asActivity();
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$data = $act->asString(false, false, false);
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common_log(LOG_INFO, 'dumping membership in ' . $mem->group_id . ' to file ' . $fname);
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file_put_contents($fname, $data);
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$data = null;
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} catch (Exception $e) {
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common_log(LOG_ERR, "Error backing up membership in " . $mem->group_id . ": " . $e->getMessage());
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continue;
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}
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}
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$page++;
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} while ($mem->N > GROUPS_PER_PAGE);
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}
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function makeActivityFeed($user, $tmpdir, $fullPath)
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{
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$handle = fopen($fullPath, 'c');
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$this->writeFeedHeader($user, $handle);
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$objects = scandir($tmpdir);
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rsort($objects);
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foreach ($objects as $object) {
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$objFull = $tmpdir . '/' . $object;
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if (!is_dir($objFull)) {
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$entry = file_get_contents($objFull);
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fwrite($handle, $entry);
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$entry = null;
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}
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}
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$this->writeFeedFooter($user, $handle);
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fclose($handle);
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}
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function writeFeedHeader($user, $handle)
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{
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fwrite($handle, '<?xml version="1.0" encoding="UTF-8"?>');
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fwrite($handle, "\n");
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fwrite($handle, '<feed xml:lang="en-US" xmlns="http://www.w3.org/2005/Atom" xmlns:thr="http://purl.org/syndication/thread/1.0" xmlns:georss="http://www.georss.org/georss" xmlns:activity="http://activitystrea.ms/spec/1.0/" xmlns:media="http://purl.org/syndication/atommedia" xmlns:poco="http://portablecontacts.net/spec/1.0" xmlns:ostatus="http://ostatus.org/schema/1.0" xmlns:statusnet="http://status.net/schema/api/1/">');
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fwrite($handle, "\n");
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$profile = $user->getProfile();
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$author = $profile->asActivityObject();
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$xs = new XMLStringer();
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$author->outputTo($xs, 'author');
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fwrite($handle, $xs->getString());
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fwrite($handle, "\n");
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}
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function writeFeedFooter($user, $handle)
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{
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fwrite($handle, '</feed>');
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}
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function delTree($dir)
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{
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if (is_dir($dir)) {
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$objects = scandir($dir);
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foreach ($objects as $object) {
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if ($object != "." && $object != "..") {
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if (filetype($dir."/".$object) == "dir") {
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$this->delTree($dir."/".$object);
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} else {
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unlink($dir."/".$object);
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}
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}
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}
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reset($objects);
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rmdir($dir);
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}
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}
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}
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