729 lines
24 KiB
PHP
729 lines
24 KiB
PHP
<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social 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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// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Installation lib
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*
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* @package Installation
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* @author Adrian Lang <mail@adrianlang.de>
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* @author Brenda Wallace <shiny@cpan.org>
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* @author Brett Taylor <brett@webfroot.co.nz>
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* @author Brion Vibber <brion@pobox.com>
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* @author CiaranG <ciaran@ciarang.com>
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* @author Craig Andrews <candrews@integralblue.com>
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* @author Eric Helgeson <helfire@Erics-MBP.local>
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* @author Evan Prodromou <evan@status.net>
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @author Robin Millette <millette@controlyourself.ca>
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* @author Sarven Capadisli <csarven@status.net>
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* @author Tom Adams <tom@holizz.com>
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* @author Zach Copley <zach@status.net>
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* @author Diogo Cordeiro <diogo@fc.up.pt>
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* @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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abstract class Installer
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{
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/** Web site info */
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public $sitename;
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public $server;
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public $path;
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public $fancy;
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public $siteProfile;
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public $ssl;
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/** DB info */
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public $host;
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public $database;
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public $dbtype;
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public $username;
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public $password;
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public $db;
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/** Storage info */
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public $avatarDir;
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public $fileDir;
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/** Administrator info */
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public $adminNick;
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public $adminPass;
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public $adminEmail;
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/** Should we skip writing the configuration file? */
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public $skipConfig = false;
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public static $dbModules = [
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'mysql' => [
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'name' => 'MariaDB 10.3+',
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'check_module' => 'mysqli',
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'scheme' => 'mysqli', // DSN prefix for MDB2
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'charset' => 'utf8mb4',
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],
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'pgsql' => [
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'name' => 'PostgreSQL 11+',
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'check_module' => 'pgsql',
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'scheme' => 'pgsql', // DSN prefix for MDB2
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'charset' => 'UTF8',
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]
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];
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/**
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* Attempt to include a PHP file and report if it worked, while
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* suppressing the annoying warning messages on failure.
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* @param string $filename
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* @return bool
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*/
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private function haveIncludeFile(string $filename): bool
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{
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$old = error_reporting(error_reporting() & ~E_WARNING);
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$ok = include_once($filename);
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error_reporting($old);
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return $ok;
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}
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/**
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* Check if all is ready for installation
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*
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* @return bool
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*/
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public function checkPrereqs(): bool
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{
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$pass = true;
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$config = INSTALLDIR . '/config.php';
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if (!$this->skipConfig && file_exists($config)) {
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if (!is_writable($config) || filesize($config) > 0) {
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if (filesize($config) == 0) {
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$this->warning('Config file "config.php" already exists and is empty, but is not writable.');
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} else {
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$this->warning('Config file "config.php" already exists.');
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}
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$pass = false;
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}
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}
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if (version_compare(PHP_VERSION, '7.4.0', '<')) {
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$this->warning('Require PHP version 7.4.0 or greater.');
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$pass = false;
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}
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$reqs = ['bcmath', 'curl', 'dom', 'gd', 'intl', 'json', 'mbstring', 'openssl', 'simplexml', 'xml', 'xmlwriter'];
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foreach ($reqs as $req) {
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// Checks if a php extension is both installed and loaded
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if (!extension_loaded($req)) {
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$this->warning(sprintf('Cannot load required extension: <code>%s</code>', $req));
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$pass = false;
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}
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}
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// Make sure we have at least one database module available
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$missingExtensions = [];
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foreach (self::$dbModules as $type => $info) {
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if (!extension_loaded($info['check_module'])) {
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$missingExtensions[] = $info['check_module'];
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}
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}
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if (count($missingExtensions) == count(self::$dbModules)) {
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$req = implode(', ', $missingExtensions);
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$this->warning(sprintf('Cannot find a database extension. You need at least one of %s.', $req));
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$pass = false;
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}
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// @fixme this check seems to be insufficient with Windows ACLs
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if (!$this->skipConfig && !is_writable(INSTALLDIR)) {
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$this->warning(
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sprintf('Cannot write config file to: <code>%s</code></p>', INSTALLDIR),
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sprintf('On your server, try this command: <code>chmod a+w %s</code>', INSTALLDIR)
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);
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$pass = false;
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}
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// Check the subdirs used for file uploads
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// TODO get another flag for this --skipFileSubdirCreation
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if (!$this->skipConfig) {
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define('GNUSOCIAL', true);
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define('STATUSNET', true);
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require_once INSTALLDIR . '/lib/util/language.php';
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$_server = $this->server;
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$_path = $this->path; // We won't be using those so it's safe to do this small hack
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require_once INSTALLDIR . '/lib/util/util.php';
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require_once INSTALLDIR . '/lib/util/default.php';
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$fileSubdirs = [
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empty($this->avatarDir) ? $default['avatar']['dir'] : $this->avatarDir,
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empty($this->fileDir) ? $default['attachments']['dir'] : $this->fileDir
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];
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unset($default);
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foreach ($fileSubdirs as $fileFullPath) {
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if (!file_exists($fileFullPath)) {
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$this->warning(
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sprintf('GNU social was unable to create a directory on this path: %s', $fileFullPath),
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'Either create that directory with the right permissions so that GNU social can use it or '.
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'set the necessary permissions and it will be created.'
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);
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$pass = $pass && mkdir($fileFullPath);
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} elseif (!is_dir($fileFullPath)) {
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$this->warning(
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sprintf('GNU social expected a directory but found something else on this path: %s', $fileFullPath),
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'Either make sure it goes to a directory or remove it and a directory will be created.'
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);
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$pass = false;
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} elseif (!is_writable($fileFullPath)) {
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$this->warning(
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sprintf('Cannot write to directory: <code>%s</code>', $fileFullPath),
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sprintf('On your server, try this command: <code>chmod a+w %s</code>', $fileFullPath)
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);
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$pass = false;
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}
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}
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}
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return $pass;
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}
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/**
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* Basic validation on the database parameters
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* Side effects: error output if not valid
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*
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* @return bool success
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*/
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public function validateDb(): bool
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{
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$fail = false;
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if (empty($this->host)) {
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$this->updateStatus("No hostname specified.", true);
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$fail = true;
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}
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if (empty($this->database)) {
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$this->updateStatus("No database specified.", true);
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$fail = true;
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}
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if (empty($this->username)) {
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$this->updateStatus("No username specified.", true);
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$fail = true;
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}
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if (empty($this->sitename)) {
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$this->updateStatus("No sitename specified.", true);
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$fail = true;
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}
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return !$fail;
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}
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/**
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* Basic validation on the administrator user parameters
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* Side effects: error output if not valid
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*
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* @return bool success
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*/
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public function validateAdmin(): bool
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{
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$fail = false;
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if (empty($this->adminNick)) {
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$this->updateStatus("No initial user nickname specified.", true);
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$fail = true;
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}
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if ($this->adminNick && !preg_match('/^[0-9a-z]{1,64}$/', $this->adminNick)) {
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$this->updateStatus('The user nickname "' . htmlspecialchars($this->adminNick) .
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'" is invalid; should be plain letters and numbers no longer than 64 characters.', true);
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$fail = true;
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}
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// @fixme hardcoded list; should use Nickname::isValid()
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// if/when it's safe to have loaded the infrastructure here
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$blacklist = ['main', 'panel', 'twitter', 'settings', 'rsd.xml', 'favorited', 'featured', 'favoritedrss', 'featuredrss', 'rss', 'getfile', 'api', 'groups', 'group', 'peopletag', 'tag', 'user', 'message', 'conversation', 'notice', 'attachment', 'search', 'index.php', 'doc', 'opensearch', 'robots.txt', 'xd_receiver.html', 'facebook', 'activity'];
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if (in_array($this->adminNick, $blacklist)) {
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$this->updateStatus('The user nickname "' . htmlspecialchars($this->adminNick) .
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'" is reserved.', true);
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$fail = true;
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}
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if (empty($this->adminPass)) {
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$this->updateStatus("No initial user password specified.", true);
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$fail = true;
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}
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return !$fail;
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}
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/**
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* Make sure a site profile was selected
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*
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* @return bool success
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*/
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public function validateSiteProfile(): bool
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{
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if (empty($this->siteProfile)) {
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$this->updateStatus("No site profile selected.", true);
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return false;
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}
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return true;
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}
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/**
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* Set up the database with the appropriate function for the selected type...
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* Saves database info into $this->db.
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*
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* @fixme escape things in the connection string in case we have a funny pass etc
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* @return mixed array of database connection params on success, false on failure
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* @throws Exception
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*/
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public function setupDatabase()
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{
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if (!empty($this->db)) {
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throw new Exception('Bad order of operations: DB already set up.');
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}
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$this->updateStatus('Starting installation...');
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$auth = '';
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if (!empty($this->password)) {
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$auth .= ":{$this->password}";
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}
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$scheme = self::$dbModules[$this->dbtype]['scheme'];
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$dsn = "{$scheme}://{$this->username}{$auth}@{$this->host}/{$this->database}";
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$this->updateStatus('Checking database...');
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$charset = self::$dbModules[$this->dbtype]['charset'];
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$conn = $this->connectDatabase($dsn, $charset);
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$server_charset = $this->getDatabaseCharset($conn, $this->dbtype);
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// Ensure the database server character set is UTF-8.
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if ($server_charset !== $charset) {
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$this->updateStatus(
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'GNU social requires the "' . $charset . '" character set. '
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. 'Yours is ' . htmlentities($server_charset)
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);
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return false;
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}
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// Ensure the timezone is UTC.
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if ($this->dbtype !== 'mysql') {
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$conn->exec("SET TIME ZONE INTERVAL '+00:00' HOUR TO MINUTE");
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} else {
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$conn->exec("SET time_zone = '+0:00'");
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}
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$res = $this->updateStatus('Creating database tables...');
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if (!$this->createCoreTables($conn)) {
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$this->updateStatus('Error creating tables.', true);
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return false;
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}
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foreach ([
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'sms_carrier' => 'SMS carrier',
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'notice_source' => 'notice source',
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'foreign_services' => 'foreign service',
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] as $scr => $name) {
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$this->updateStatus(sprintf("Adding %s data to database...", $name));
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$res = $this->runDbScript($scr . '.sql', $conn);
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if ($res === false) {
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$this->updateStatus(sprintf("Can't run %s script.", $name), true);
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return false;
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}
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}
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$db = ['type' => $this->dbtype, 'database' => $dsn];
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return $db;
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}
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/**
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* Open a connection to the database.
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*
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* @param string $dsn
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* @param string $charset
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* @return MDB2_Driver_Common
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* @throws Exception
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*/
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protected function connectDatabase(string $dsn, string $charset)
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{
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$dsn = MDB2::parseDSN($dsn);
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// Ensure the database client character set is UTF-8.
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$dsn['charset'] = $charset;
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$conn = MDB2::connect($dsn);
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if (MDB2::isError($conn)) {
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throw new Exception(
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'Cannot connect to database: ' . $conn->getMessage()
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);
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}
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return $conn;
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}
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/**
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* Get the database server character set.
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*
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* @param MDB2_Driver_Common $conn
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* @param string $dbtype
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* @return string
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* @throws Exception
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*/
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protected function getDatabaseCharset($conn, string $dbtype): string
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{
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$database = $conn->getDatabase();
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switch ($dbtype) {
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case 'pgsql':
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$res = $conn->query('SHOW server_encoding');
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break;
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case 'mysql':
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$stmt = $conn->prepare(
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<<<END
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SELECT DEFAULT_CHARACTER_SET_NAME
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FROM INFORMATION_SCHEMA.SCHEMATA
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WHERE SCHEMA_NAME = ?
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END,
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['text'],
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MDB2_PREPARE_RESULT
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);
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if (MDB2::isError($stmt)) {
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return null;
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}
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$res = $stmt->execute([$database]);
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break;
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default:
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throw new Exception('Unknown DB type selected.');
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}
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if (MDB2::isError($res)) {
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throw new Exception($res->getMessage());
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}
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$ret = $res->fetchOne();
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if (MDB2::isError($ret)) {
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throw new Exception($ret->getMessage());
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}
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return $ret;
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}
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/**
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* Create core tables on the given database connection.
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*
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* @param MDB2_Driver_Common $conn
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* @return bool
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*/
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public function createCoreTables($conn): bool
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{
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$schema = Schema::get($conn, $this->dbtype);
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$tableDefs = $this->getCoreSchema();
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foreach ($tableDefs as $name => $def) {
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if (defined('DEBUG_INSTALLER')) {
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echo " $name ";
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}
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$schema->ensureTable($name, $def);
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}
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return true;
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}
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/**
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* Fetch the core table schema definitions.
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*
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* @return array of table names => table def arrays
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*/
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public function getCoreSchema(): array
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{
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$schema = [];
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include INSTALLDIR . '/db/core.php';
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return $schema;
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}
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/**
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* Return a parseable PHP literal for the given value.
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* This will include quotes for strings, etc.
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*
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* @param mixed $val
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* @return string
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*/
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public function phpVal($val): string
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{
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return var_export($val, true);
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}
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/**
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* Return an array of parseable PHP literal for the given values.
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* These will include quotes for strings, etc.
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*
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* @param mixed $map
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* @return array
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*/
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public function phpVals($map): array
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{
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return array_map([$this, 'phpVal'], $map);
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}
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/**
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* Write a stock configuration file.
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*
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* @return bool success
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*
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* @fixme escape variables in output in case we have funny chars, apostrophes etc
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*/
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public function writeConf(): bool
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{
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$vals = $this->phpVals([
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'sitename' => $this->sitename,
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'server' => $this->server,
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'path' => $this->path,
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'ssl' => in_array($this->ssl, ['never', 'always'])
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? $this->ssl
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: 'never',
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'db_database' => $this->db['database'],
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'db_type' => $this->db['type']
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]);
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// assemble configuration file in a string
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$cfg = "<?php\n" .
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"if (!defined('GNUSOCIAL')) { exit(1); }\n\n" .
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// site name
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"\$config['site']['name'] = {$vals['sitename']};\n\n" .
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// site location
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"\$config['site']['server'] = {$vals['server']};\n" .
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"\$config['site']['path'] = {$vals['path']}; \n\n" .
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"\$config['site']['ssl'] = {$vals['ssl']}; \n\n" .
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($this->ssl === 'proxy' ? "\$config['site']['sslproxy'] = true;\n\n" : '') .
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// checks if fancy URLs are enabled
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($this->fancy ? "\$config['site']['fancy'] = true;\n\n" : '') .
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// database
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"\$config['db']['database'] = {$vals['db_database']};\n\n" .
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"\$config['db']['type'] = {$vals['db_type']};\n\n" .
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"// Uncomment below for better performance. Just remember you must run\n" .
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"// php scripts/checkschema.php whenever your enabled plugins change!\n" .
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"//\$config['db']['schemacheck'] = 'script';\n\n";
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// Normalize line endings for Windows servers
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$cfg = str_replace("\n", PHP_EOL, $cfg);
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// write configuration file out to install directory
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$res = file_put_contents(INSTALLDIR . DIRECTORY_SEPARATOR . 'config.php', $cfg);
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return $res;
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}
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/**
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* Write the site profile. We do this after creating the initial user
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* in case the site profile is set to single user. This gets around the
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* 'chicken-and-egg' problem of the system requiring a valid user for
|
|
* single user mode, before the intial user is actually created. Yeah,
|
|
* we should probably do this in smarter way.
|
|
*
|
|
* @return int res number of bytes written
|
|
*/
|
|
public function writeSiteProfile(): int
|
|
{
|
|
$vals = $this->phpVals([
|
|
'site_profile' => $this->siteProfile,
|
|
'nickname' => $this->adminNick
|
|
]);
|
|
|
|
$cfg =
|
|
// site profile
|
|
"\$config['site']['profile'] = {$vals['site_profile']};\n";
|
|
|
|
if ($this->siteProfile == "singleuser") {
|
|
$cfg .= "\$config['singleuser']['nickname'] = {$vals['nickname']};\n\n";
|
|
} else {
|
|
$cfg .= "\n";
|
|
}
|
|
|
|
// Normalize line endings for Windows servers
|
|
$cfg = str_replace("\n", PHP_EOL, $cfg);
|
|
|
|
// write configuration file out to install directory
|
|
$res = file_put_contents(INSTALLDIR . '/config.php', $cfg, FILE_APPEND);
|
|
|
|
return $res;
|
|
}
|
|
|
|
/**
|
|
* Install schema into the database
|
|
*
|
|
* @param string $filename location of database schema file
|
|
* @param MDB2_Driver_Common $conn connection to database
|
|
*
|
|
* @return bool - indicating success or failure
|
|
*/
|
|
public function runDbScript(string $filename, $conn): bool
|
|
{
|
|
$sql = trim(file_get_contents(INSTALLDIR . '/db/' . $filename));
|
|
$stmts = explode(';', $sql);
|
|
foreach ($stmts as $stmt) {
|
|
$stmt = trim($stmt);
|
|
if (!mb_strlen($stmt)) {
|
|
continue;
|
|
}
|
|
try {
|
|
$res = $conn->query($stmt);
|
|
} catch (Exception $e) {
|
|
$error = $e->getMessage();
|
|
$this->updateStatus("ERROR ($error) for SQL '$stmt'");
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Create the initial admin user account.
|
|
* Side effect: may load portions of GNU social framework.
|
|
* Side effect: outputs program info
|
|
*/
|
|
public function registerInitialUser(): bool
|
|
{
|
|
// initalize hostname from install arguments, so it can be used to find
|
|
// the /etc config file from the commandline installer
|
|
$server = $this->server;
|
|
require_once INSTALLDIR . '/lib/util/common.php';
|
|
|
|
$data = ['nickname' => $this->adminNick,
|
|
'password' => $this->adminPass,
|
|
'fullname' => $this->adminNick];
|
|
if ($this->adminEmail) {
|
|
$data['email'] = $this->adminEmail;
|
|
}
|
|
try {
|
|
$user = User::register($data, true); // true to skip email sending verification
|
|
} catch (Exception $e) {
|
|
return false;
|
|
}
|
|
|
|
// give initial user carte blanche
|
|
|
|
$user->grantRole('owner');
|
|
$user->grantRole('moderator');
|
|
$user->grantRole('administrator');
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* The beef of the installer!
|
|
* Create database, config file, and admin user.
|
|
*
|
|
* Prerequisites: validation of input data.
|
|
*
|
|
* @return bool success
|
|
*/
|
|
public function doInstall(): bool
|
|
{
|
|
global $config;
|
|
|
|
$this->updateStatus("Initializing...");
|
|
ini_set('display_errors', 1);
|
|
error_reporting(E_ALL & ~E_STRICT & ~E_NOTICE);
|
|
if (!defined('GNUSOCIAL')) {
|
|
define('GNUSOCIAL', true);
|
|
}
|
|
if (!defined('STATUSNET')) {
|
|
define('STATUSNET', true);
|
|
}
|
|
|
|
require_once INSTALLDIR . '/lib/util/framework.php';
|
|
GNUsocial::initDefaults($this->server, $this->path);
|
|
|
|
if ($this->siteProfile == "singleuser") {
|
|
// Until we use ['site']['profile']==='singleuser' everywhere
|
|
$config['singleuser']['enabled'] = true;
|
|
}
|
|
|
|
try {
|
|
$this->db = $this->setupDatabase();
|
|
if (!$this->db) {
|
|
// database connection failed, do not move on to create config file.
|
|
return false;
|
|
}
|
|
} catch (Exception $e) {
|
|
// Lower-level DB error!
|
|
$this->updateStatus("Database error: " . $e->getMessage(), true);
|
|
return false;
|
|
}
|
|
|
|
if (!$this->skipConfig) {
|
|
// Make sure we can write to the file twice
|
|
$oldUmask = umask(000);
|
|
|
|
$this->updateStatus("Writing config file...");
|
|
$res = $this->writeConf();
|
|
|
|
if (!$res) {
|
|
$this->updateStatus("Can't write config file.", true);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!empty($this->adminNick)) {
|
|
// Okay, cross fingers and try to register an initial user
|
|
if ($this->registerInitialUser()) {
|
|
$this->updateStatus(
|
|
"An initial user with the administrator role has been created."
|
|
);
|
|
} else {
|
|
$this->updateStatus(
|
|
"Could not create initial user account.",
|
|
true
|
|
);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!$this->skipConfig) {
|
|
$this->updateStatus("Setting site profile...");
|
|
$res = $this->writeSiteProfile();
|
|
|
|
if (!$res) {
|
|
$this->updateStatus("Can't write to config file.", true);
|
|
return false;
|
|
}
|
|
|
|
// Restore original umask
|
|
umask($oldUmask);
|
|
// Set permissions back to something decent
|
|
chmod(INSTALLDIR . '/config.php', 0644);
|
|
}
|
|
|
|
$scheme = $this->ssl === 'always' ? 'https' : 'http';
|
|
$link = "{$scheme}://{$this->server}/{$this->path}";
|
|
|
|
$this->updateStatus("GNU social has been installed at $link");
|
|
$this->updateStatus(
|
|
'<strong>DONE!</strong> You can visit your <a href="' . htmlspecialchars($link) . '">new GNU social site</a> (log in as "' . htmlspecialchars($this->adminNick) . '"). If this is your first GNU social install, make your experience the best possible by visiting our resource site to join the <a href="https://lists.gnu.org/mailman/listinfo/social-discuss">mailing list or IRC</a>. <a href="' . htmlspecialchars($link) . '/doc/faq">FAQ is found here</a>.'
|
|
);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Output a pre-install-time warning message
|
|
* @param string $message HTML ok, but should be plaintext-able
|
|
* @param string $submessage HTML ok, but should be plaintext-able
|
|
*/
|
|
abstract public function warning(string $message, string $submessage = '');
|
|
|
|
/**
|
|
* Output an install-time progress message
|
|
* @param string $status HTML ok, but should be plaintext-able
|
|
* @param bool $error true if this should be marked as an error condition
|
|
*/
|
|
abstract public function updateStatus(string $status, bool $error = false);
|
|
}
|