friendica/src/Core/Update.php

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<?php
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/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Core;
use Friendica\App;
use Friendica\App\Mode;
use Friendica\Database\DBA;
use Friendica\Database\DBStructure;
use Friendica\DI;
use Friendica\Network\HTTPException\InternalServerErrorException;
use Friendica\Util\Strings;
class Update
{
const SUCCESS = 0;
const FAILED = 1;
/**
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* Function to check if the Database structure needs an update.
*
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* @param string $basePath The base path of this application
* @param boolean $via_worker Is the check run via the worker?
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* @param App\Mode $mode The current app mode
*
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
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public static function check(string $basePath, bool $via_worker, App\Mode $mode)
{
if (!DBA::connected()) {
return;
}
// Don't check the status if the last update was failed
if (DI::config()->get('system', 'update', Update::SUCCESS, true) == Update::FAILED) {
return;
}
$build = DI::config()->get('system', 'build');
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if (empty($build)) {
DI::config()->set('system', 'build', DB_UPDATE_VERSION - 1);
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$build = DB_UPDATE_VERSION - 1;
}
// We don't support upgrading from very old versions anymore
if ($build < NEW_TABLE_STRUCTURE_VERSION) {
$error = DI::l10n()->t('Updates from version %s are not supported. Please update at least to version 2021.01 and wait until the postupdate finished version 1383.', $build);
if (DI::mode()->getExecutor() == Mode::INDEX) {
die($error);
} else {
throw new InternalServerErrorException($error);
}
}
// The postupdate has to completed version 1281 for the new post views to take over
$postupdate = DI::config()->get("system", "post_update_version");
if ($postupdate < NEW_TABLE_STRUCTURE_VERSION) {
$error = DI::l10n()->t('Updates from postupdate version %s are not supported. Please update at least to version 2021.01 and wait until the postupdate finished version 1383.', $postupdate);
if (DI::mode()->getExecutor() == Mode::INDEX) {
die($error);
} else {
throw new InternalServerErrorException($error);
}
}
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if ($build < DB_UPDATE_VERSION) {
if ($via_worker) {
// Calling the database update directly via the worker enables us to perform database changes to the workerqueue table itself.
// This is a fallback, since normally the database update will be performed by a worker job.
// This worker job doesn't work for changes to the "workerqueue" table itself.
self::run($basePath);
} else {
Worker::add(PRIORITY_CRITICAL, 'DBUpdate');
}
}
}
/**
* Automatic database updates
*
* @param string $basePath The base path of this application
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* @param bool $force Force the Update-Check even if the database version doesn't match
* @param bool $override Overrides any running/stuck updates
* @param bool $verbose Run the Update-Check verbose
* @param bool $sendMail Sends a Mail to the administrator in case of success/failure
*
* @return string Empty string if the update is successful, error messages otherwise
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
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public static function run(string $basePath, bool $force = false, bool $override = false, bool $verbose = false, bool $sendMail = true)
{
// In force mode, we release the dbupdate lock first
// Necessary in case of an stuck update
if ($override) {
DI::lock()->release('dbupdate', true);
}
$build = DI::config()->get('system', 'build', null, true);
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if (empty($build) || ($build > DB_UPDATE_VERSION)) {
$build = DB_UPDATE_VERSION - 1;
DI::config()->set('system', 'build', $build);
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}
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if ($build != DB_UPDATE_VERSION || $force) {
require_once 'update.php';
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$stored = intval($build);
$current = intval(DB_UPDATE_VERSION);
if ($stored < $current || $force) {
DI::config()->load('database');
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// Compare the current structure with the defined structure
// If the Lock is acquired, never release it automatically to avoid double updates
if (DI::lock()->acquire('dbupdate', 0, Cache\Duration::INFINITE)) {
Logger::notice('Update starting.', ['from' => $stored, 'to' => $current]);
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// Checks if the build changed during Lock acquiring (so no double update occurs)
$retryBuild = DI::config()->get('system', 'build', null, true);
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if ($retryBuild !== $build) {
Logger::notice('Update already done.', ['from' => $stored, 'to' => $current]);
DI::lock()->release('dbupdate');
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return '';
}
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// run the pre_update_nnnn functions in update.php
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for ($version = $stored + 1; $version <= $current; $version++) {
Logger::notice('Execute pre update.', ['version' => $version]);
$r = self::runUpdateFunction($version, 'pre_update', $sendMail);
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if (!$r) {
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Logger::warning('Pre update failed', ['version' => $version]);
DI::config()->set('system', 'update', Update::FAILED);
DI::lock()->release('dbupdate');
return $r;
} else {
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Logger::notice('Pre update executed.', ['version' => $version]);
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}
}
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// update the structure in one call
Logger::notice('Execute structure update');
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$retval = DBStructure::update($basePath, $verbose, true);
if (!empty($retval)) {
if ($sendMail) {
self::updateFailed(
DB_UPDATE_VERSION,
$retval
);
}
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Logger::error('Update ERROR.', ['from' => $stored, 'to' => $current, 'retval' => $retval]);
DI::config()->set('system', 'update', Update::FAILED);
DI::lock()->release('dbupdate');
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return $retval;
} else {
Logger::notice('Database structure update finished.', ['from' => $stored, 'to' => $current]);
}
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// run the update_nnnn functions in update.php
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for ($version = $stored + 1; $version <= $current; $version++) {
Logger::notice('Execute post update.', ['version' => $version]);
$r = self::runUpdateFunction($version, 'update', $sendMail);
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if (!$r) {
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Logger::warning('Post update failed', ['version' => $version]);
DI::config()->set('system', 'update', Update::FAILED);
DI::lock()->release('dbupdate');
return $r;
} else {
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DI::config()->set('system', 'build', $version);
Logger::notice('Post update executed.', ['version' => $version]);
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}
}
DI::config()->set('system', 'build', $current);
DI::config()->set('system', 'update', Update::SUCCESS);
DI::lock()->release('dbupdate');
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Logger::notice('Update success.', ['from' => $stored, 'to' => $current]);
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if ($sendMail) {
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self::updateSuccessful($stored, $current);
}
}
}
}
return '';
}
/**
* Executes a specific update function
*
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* @param int $version the DB version number of the function
* @param string $prefix the prefix of the function (update, pre_update)
* @param bool $sendMail whether to send emails on success/failure
* @return bool true, if the update function worked
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
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public static function runUpdateFunction(int $version, string $prefix, bool $sendMail = true)
{
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$funcname = $prefix . '_' . $version;
Logger::notice('Update function start.', ['function' => $funcname]);
if (function_exists($funcname)) {
// There could be a lot of processes running or about to run.
// We want exactly one process to run the update command.
// So store the fact that we're taking responsibility
// after first checking to see if somebody else already has.
// If the update fails or times-out completely you may need to
// delete the config entry to try again.
if (DI::lock()->acquire('dbupdate_function', 120, Cache\Duration::INFINITE)) {
// call the specific update
Logger::notice('Pre update function start.', ['function' => $funcname]);
$retval = $funcname();
Logger::notice('Update function done.', ['function' => $funcname]);
if ($retval) {
if ($sendMail) {
//send the administrator an e-mail
self::updateFailed(
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$version,
DI::l10n()->t('Update %s failed. See error logs.', $version)
);
}
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Logger::error('Update function ERROR.', ['function' => $funcname, 'retval' => $retval]);
DI::lock()->release('dbupdate_function');
return false;
} else {
DI::lock()->release('dbupdate_function');
Logger::notice('Update function finished.', ['function' => $funcname]);
return true;
}
} else {
Logger::error('Locking failed.', ['function' => $funcname]);
return false;
}
} else {
Logger::notice('Update function skipped.', ['function' => $funcname]);
return true;
}
}
/**
* send the email and do what is needed to do on update fails
*
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* @param int $update_id number of failed update
* @param string $error_message error message
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
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private static function updateFailed(int $update_id, string $error_message) {
//send the administrators an e-mail
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$condition = ['email' => explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email'))), 'parent-uid' => 0];
$adminlist = DBA::select('user', ['uid', 'language', 'email'], $condition, ['order' => ['uid']]);
// No valid result?
if (!DBA::isResult($adminlist)) {
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Logger::warning('Cannot notify administrators .', ['update' => $update_id, 'message' => $error_message]);
// Don't continue
return;
}
$sent = [];
// every admin could had different language
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while ($admin = DBA::fetch($adminlist)) {
if (in_array($admin['email'], $sent)) {
continue;
}
$sent[] = $admin['email'];
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$lang = $admin['language'] ?? 'en';
$l10n = DI::l10n()->withLang($lang);
$preamble = Strings::deindent($l10n->t("
The friendica developers released update %s recently,
but when I tried to install it, something went terribly wrong.
This needs to be fixed soon and I can't do it alone. Please contact a
friendica developer if you can not help me on your own. My database might be invalid.",
$update_id));
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$body = $l10n->t('The error message is\n[pre]%s[/pre]', $error_message);
$email = DI::emailer()
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->newSystemMail()
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->withMessage($l10n->t('[Friendica Notify] Database update'), $preamble, $body)
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->forUser($admin)
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->withRecipient($admin['email'])
->build();
DI::emailer()->send($email);
}
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Logger::alert('Database structure update failed.', ['error' => $error_message]);
}
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/**
* Send a mail to the administrator about the successful update
*
* @param integer $from_build
* @param integer $to_build
* @return void
*/
private static function updateSuccessful(int $from_build, int $to_build)
{
//send the administrators an e-mail
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$condition = ['email' => explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email'))), 'parent-uid' => 0];
$adminlist = DBA::select('user', ['uid', 'language', 'email'], $condition, ['order' => ['uid']]);
if (DBA::isResult($adminlist)) {
$sent = [];
// every admin could had different language
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while ($admin = DBA::fetch($adminlist)) {
if (in_array($admin['email'], $sent)) {
continue;
}
$sent[] = $admin['email'];
$lang = (($admin['language']) ? $admin['language'] : 'en');
$l10n = DI::l10n()->withLang($lang);
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$preamble = Strings::deindent($l10n->t('
The friendica database was successfully updated from %s to %s.',
$from_build, $to_build));
$email = DI::emailer()
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->newSystemMail()
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->withMessage($l10n->t('[Friendica Notify] Database update'), $preamble)
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->forUser($admin)
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->withRecipient($admin['email'])
->build();
DI::emailer()->send($email);
}
}
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Logger::debug('Database structure update successful.');
}
}