mirror of
https://github.com/Pathduck/gallery3.git
synced 2026-05-11 07:19:06 -04:00
d012cddf78
This isn't too useful for end users, but would be really useful for developers that install Gallery3 over and over again...
271 lines
9.1 KiB
PHP
271 lines
9.1 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2013 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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class installer {
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static $mysqli;
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static function already_installed() {
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return file_exists(VARPATH . "database.php");
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}
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static function var_writable() {
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if (is_writable(VARPATH)) {
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return true;
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}
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if (@mkdir(VARPATH)) {
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return true;
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}
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return false;
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}
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static function create_database_config($config) {
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$db_config_file = VARPATH . "database.php";
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ob_start();
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extract($config);
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include(DOCROOT . "installer/database_config.php");
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$output = ob_get_clean();
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return file_put_contents($db_config_file, $output) !== false;
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}
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static function unpack_var() {
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if (!file_exists(VARPATH)) {
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mkdir(VARPATH);
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chmod(VARPATH, 0777);
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}
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include(DOCROOT . "installer/init_var.php");
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return true;
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}
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static function unpack_sql($config) {
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$prefix = $config["prefix"];
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$buf = null;
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foreach (file(DOCROOT . "installer/install.sql") as $line) {
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$buf .= trim($line);
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if (preg_match("/;$/", $buf)) {
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if (!mysql_query(self::prepend_prefix($prefix, $buf))) {
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return false;
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}
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$buf = "";
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}
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}
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return true;
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}
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static function connect($config) {
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// We know that we have either mysql or mysqli. By default we use mysql functions, so if
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// they're not defined then do the simplest thing which will work: remap them to their mysqli
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// counterparts.
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if (!function_exists("mysql_query")) {
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function mysql_connect($host, $user, $pass) {
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list ($host, $port) = explode(":", $host . ":");
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installer::$mysqli = new mysqli($host, $user, $pass, $port);
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// http://php.net/manual/en/mysqli.connect.php says to use mysqli_connect_error() instead of
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// $mysqli->connect_error because of bugs before PHP 5.2.9
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$error = mysqli_connect_error();
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return empty($error);
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}
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function mysql_query($query) {
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return installer::$mysqli->query($query);
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}
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function mysql_num_rows($result) {
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return $result->num_rows;
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}
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function mysql_error() {
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return installer::$mysqli->error;
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}
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function mysql_select_db($db) {
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return installer::$mysqli->select_db($db);
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}
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}
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$host = empty($config["port"]) ? $config['host'] : "{$config['host']}:{$config['port']}";
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return @mysql_connect($host, $config["user"], $config["password"]);
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}
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static function select_db($config) {
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if (mysql_select_db($config["dbname"])) {
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return true;
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}
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return mysql_query("CREATE DATABASE `{$config['dbname']}`") &&
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mysql_select_db($config["dbname"]);
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}
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static function verify_mysql_version($config) {
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return version_compare(installer::mysql_version($config), "5.0.0", ">=");
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}
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static function mysql_version($config) {
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$result = mysql_query("SHOW VARIABLES WHERE variable_name = \"version\"");
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$row = mysql_fetch_object($result);
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return $row->Value;
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}
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static function db_empty($config) {
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$query = "SHOW TABLES LIKE '{$config['prefix']}items'";
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$results = mysql_query($query);
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if ($results === false) {
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$msg = mysql_error();
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return $msg;
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}
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return mysql_num_rows($results) === 0;
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}
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static function create_admin($config) {
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$salt = "";
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for ($i = 0; $i < 4; $i++) {
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$char = mt_rand(48, 109);
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$char += ($char > 90) ? 13 : ($char > 57) ? 7 : 0;
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$salt .= chr($char);
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}
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if (!$password = $config["g3_password"]) {
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$password = substr(md5(time() . mt_rand()), 0, 6);
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}
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// Escape backslash in preparation for our UPDATE statement.
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$hashed_password = str_replace("\\", "\\\\", $salt . md5($salt . $password));
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$sql = self::prepend_prefix($config["prefix"],
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"UPDATE {users} SET `password` = '$hashed_password' WHERE `id` = 2");
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if (mysql_query($sql)) {
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} else {
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throw new Exception(mysql_error());
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}
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return array("admin", $password);
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}
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static function create_admin_session($config) {
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$session_id = md5(time() . mt_rand());
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$user_agent = $_SERVER["HTTP_USER_AGENT"];
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$user_agent_len = strlen($user_agent);
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$now = time();
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$data = "session_id|s:32:\"$session_id\"";
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$data .= ";user_agent|s:{$user_agent_len}:\"$user_agent\"";
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$data .= ";user|i:2";
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$data .= ";after_install|i:1";
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$data .= ";last_activity|i:$now";
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$data = base64_encode($data);
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$sql = "INSERT INTO {sessions}(`session_id`, `last_activity`, `data`) " .
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"VALUES('$session_id', $now, '$data')";
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$sql = self::prepend_prefix($config["prefix"], $sql);
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if (mysql_query($sql)) {
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setcookie("g3sid", $session_id, 0, "/", "", false, false);
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} else {
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throw new Exception(mysql_error());
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}
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}
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static function create_private_key($config) {
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$key = md5(uniqid(mt_rand(), true)) . md5(uniqid(mt_rand(), true));
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$sql = self::prepend_prefix($config["prefix"],
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"INSERT INTO {vars} VALUES(NULL, 'gallery', 'private_key', '$key')");
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if (mysql_query($sql)) {
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} else {
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throw new Exception(mysql_error());
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}
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}
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static function prepend_prefix($prefix, $sql) {
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return preg_replace("#{([a-zA-Z0-9_]+)}#", "`{$prefix}$1`", $sql);
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}
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static function check_environment() {
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if (!function_exists("mysql_query") && !function_exists("mysqli_set_charset")) {
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$errors[] = "Gallery 3 requires a MySQL database, but PHP doesn't have either the <a href=\"http://php.net/mysql\">MySQL</a> or the <a href=\"http://php.net/mysqli\">MySQLi</a> extension.";
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}
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if (!preg_match("/^.$/u", "ñ")) {
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$errors[] = "PHP is missing <a href=\"http://php.net/pcre\">Perl-Compatible Regular Expression</a> with UTF-8 support.";
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} else if (!preg_match("/^\pL$/u", "ñ")) {
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$errors[] = "PHP is missing <a href=\"http://php.net/pcre\">Perl-Compatible Regular Expression</a> with Unicode support.";
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}
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if (!(function_exists("spl_autoload_register"))) {
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$errors[] = "PHP is missing <a href=\"http://php.net/spl\">Standard PHP Library (SPL)</a> support";
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}
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if (!(class_exists("ReflectionClass"))) {
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$errors[] = "PHP is missing <a href=\"http://php.net/reflection\">reflection</a> support";
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}
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if (!(function_exists("filter_list"))) {
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$errors[] = "PHP is missing the <a href=\"http://php.net/filter\">filter extension</a>";
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}
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if (!(extension_loaded("iconv"))) {
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$errors[] = "PHP is missing the <a href=\"http://php.net/iconv\">iconv extension</a>";
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}
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if (!(extension_loaded("xml"))) {
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$errors[] = "PHP is missing the <a href=\"http://php.net/xml\">XML Parser extension</a>";
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}
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if (!(extension_loaded("simplexml"))) {
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$errors[] = "PHP is missing the <a href=\"http://php.net/simplexml\">SimpleXML extension</a>";
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}
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if (!extension_loaded("mbstring")) {
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$errors[] = "PHP is missing the <a href=\"http://php.net/mbstring\">mbstring extension</a>";
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} else if (ini_get("mbstring.func_overload") & MB_OVERLOAD_STRING) {
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$errors[] = "The <a href=\"http://php.net/mbstring\">mbstring extension</a> is overloading PHP's native string functions. Please disable it.";
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}
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if (!function_exists("json_encode")) {
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$errors[] = "PHP is missing the <a href=\"http://php.net/manual/en/book.json.php\">JavaScript Object Notation (JSON) extension</a>. Please install it.";
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}
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if (!ini_get("short_open_tag")) {
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$errors[] = "Gallery requires <a href=\"http://php.net/manual/en/ini.core.php\">short_open_tag</a> to be on. Please enable it in your php.ini.";
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}
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if (!function_exists("ctype_alpha")) {
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$errors[] = "Gallery requires the <a href=\"http://php.net/manual/en/book.ctype.php\">PHP Ctype</a> extension. Please install it.";
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}
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if (self::ini_get_bool("safe_mode")) {
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$errors[] = "Gallery cannot function when PHP is in <a href=\"http://php.net/manual/en/features.safe-mode.php\">Safe Mode</a>. Please disable safe mode.";
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}
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return @$errors;
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}
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/**
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* Convert any possible boolean ini value to true/false.
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* On = on = 1 = true
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* Off = off = 0 = false
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*/
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static function ini_get_bool($varname) {
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$value = ini_get($varname);
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if (!strcasecmp("on", $value) || $value == 1 || $value === true) {
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return true;
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}
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if (!strcasecmp("off", $value) || $value == 0 || $value === false) {
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return false;
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}
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return false;
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}
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}
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