/gallery3/installer/installer.php
PHP | 268 lines | 207 code | 32 blank | 29 comment | 29 complexity | 3a10dfd72cacfd01ed82159bfd50d332 MD5 | raw file
Possible License(s): GPL-2.0
- <?php defined("SYSPATH") or die("No direct script access.");
- /**
- * Gallery - a web based photo album viewer and editor
- * Copyright (C) 2000-2012 Bharat Mediratta
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 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
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
- */
- class installer {
- static $mysqli;
- static function already_installed() {
- return file_exists(VARPATH . "database.php");
- }
- static function var_writable() {
- if (is_writable(VARPATH)) {
- return true;
- }
- if (@mkdir(VARPATH)) {
- return true;
- }
- return false;
- }
- static function create_database_config($config) {
- $db_config_file = VARPATH . "database.php";
- ob_start();
- extract($config);
- include(DOCROOT . "installer/database_config.php");
- $output = ob_get_clean();
- return file_put_contents($db_config_file, $output) !== false;
- }
- static function unpack_var() {
- if (!file_exists(VARPATH)) {
- mkdir(VARPATH);
- chmod(VARPATH, 0777);
- }
- include(DOCROOT . "installer/init_var.php");
- return true;
- }
- static function unpack_sql($config) {
- $prefix = $config["prefix"];
- $buf = null;
- foreach (file(DOCROOT . "installer/install.sql") as $line) {
- $buf .= trim($line);
- if (preg_match("/;$/", $buf)) {
- if (!mysql_query(self::prepend_prefix($prefix, $buf))) {
- return false;
- }
- $buf = "";
- }
- }
- return true;
- }
- static function connect($config) {
- // We know that we have either mysql or mysqli. By default we use mysql functions, so if
- // they're not defined then do the simplest thing which will work: remap them to their mysqli
- // counterparts.
- if (!function_exists("mysql_query")) {
- function mysql_connect($host, $user, $pass) {
- list ($host, $port) = explode(":", $host . ":");
- installer::$mysqli = new mysqli($host, $user, $pass, $port);
- // http://php.net/manual/en/mysqli.connect.php says to use mysqli_connect_error() instead of
- // $mysqli->connect_error because of bugs before PHP 5.2.9
- $error = mysqli_connect_error();
- return empty($error);
- }
- function mysql_query($query) {
- return installer::$mysqli->query($query);
- }
- function mysql_num_rows($result) {
- return $result->num_rows;
- }
- function mysql_error() {
- return installer::$mysqli->error;
- }
- function mysql_select_db($db) {
- return installer::$mysqli->select_db($db);
- }
- }
- $host = empty($config["port"]) ? $config['host'] : "{$config['host']}:{$config['port']}";
- return @mysql_connect($host, $config["user"], $config["password"]);
- }
- static function select_db($config) {
- if (mysql_select_db($config["dbname"])) {
- return true;
- }
- return mysql_query("CREATE DATABASE `{$config['dbname']}`") &&
- mysql_select_db($config["dbname"]);
- }
- static function verify_mysql_version($config) {
- return version_compare(installer::mysql_version($config), "5.0.0", ">=");
- }
- static function mysql_version($config) {
- $result = mysql_query("SHOW VARIABLES WHERE variable_name = \"version\"");
- $row = mysql_fetch_object($result);
- return $row->Value;
- }
- static function db_empty($config) {
- $query = "SHOW TABLES LIKE '{$config['prefix']}items'";
- $results = mysql_query($query);
- if ($results === false) {
- $msg = mysql_error();
- return $msg;
- }
- return mysql_num_rows($results) === 0;
- }
- static function create_admin($config) {
- $salt = "";
- for ($i = 0; $i < 4; $i++) {
- $char = mt_rand(48, 109);
- $char += ($char > 90) ? 13 : ($char > 57) ? 7 : 0;
- $salt .= chr($char);
- }
- $password = substr(md5(time() . mt_rand()), 0, 6);
- // Escape backslash in preparation for our UPDATE statement.
- $hashed_password = str_replace("\\", "\\\\", $salt . md5($salt . $password));
- $sql = self::prepend_prefix($config["prefix"],
- "UPDATE {users} SET `password` = '$hashed_password' WHERE `id` = 2");
- if (mysql_query($sql)) {
- } else {
- throw new Exception(mysql_error());
- }
- return array("admin", $password);
- }
- static function create_admin_session($config) {
- $session_id = md5(time() . mt_rand());
- $user_agent = $_SERVER["HTTP_USER_AGENT"];
- $user_agent_len = strlen($user_agent);
- $now = time();
- $data = "session_id|s:32:\"$session_id\"";
- $data .= ";user_agent|s:{$user_agent_len}:\"$user_agent\"";
- $data .= ";user|i:2";
- $data .= ";after_install|i:1";
- $data .= ";last_activity|i:$now";
- $data = base64_encode($data);
- $sql = "INSERT INTO {sessions}(`session_id`, `last_activity`, `data`) " .
- "VALUES('$session_id', $now, '$data')";
- $sql = self::prepend_prefix($config["prefix"], $sql);
- if (mysql_query($sql)) {
- setcookie("g3sid", $session_id, 0, "/", "", false, false);
- } else {
- throw new Exception(mysql_error());
- }
- }
- static function create_private_key($config) {
- $key = md5(uniqid(mt_rand(), true)) . md5(uniqid(mt_rand(), true));
- $sql = self::prepend_prefix($config["prefix"],
- "INSERT INTO {vars} VALUES(NULL, 'gallery', 'private_key', '$key')");
- if (mysql_query($sql)) {
- } else {
- throw new Exception(mysql_error());
- }
- }
- static function prepend_prefix($prefix, $sql) {
- return preg_replace("#{([a-zA-Z0-9_]+)}#", "`{$prefix}$1`", $sql);
- }
- static function check_environment() {
- if (!function_exists("mysql_query") && !function_exists("mysqli_set_charset")) {
- $errors[] = "Gallery 3 requires a MySQL database, but PHP doesn't have either the <a href=\"http://php.net/mysql\">MySQL</a> or the <a href=\"http://php.net/mysqli\">MySQLi</a> extension.";
- }
- if (!preg_match("/^.$/u", "?")) {
- $errors[] = "PHP is missing <a href=\"http://php.net/pcre\">Perl-Compatible Regular Expression</a> with UTF-8 support.";
- } else if (!preg_match("/^\pL$/u", "?")) {
- $errors[] = "PHP is missing <a href=\"http://php.net/pcre\">Perl-Compatible Regular Expression</a> with Unicode support.";
- }
- if (!(function_exists("spl_autoload_register"))) {
- $errors[] = "PHP is missing <a href=\"http://php.net/spl\">Standard PHP Library (SPL)</a> support";
- }
- if (!(class_exists("ReflectionClass"))) {
- $errors[] = "PHP is missing <a href=\"http://php.net/reflection\">reflection</a> support";
- }
- if (!(function_exists("filter_list"))) {
- $errors[] = "PHP is missing the <a href=\"http://php.net/filter\">filter extension</a>";
- }
- if (!(extension_loaded("iconv"))) {
- $errors[] = "PHP is missing the <a href=\"http://php.net/iconv\">iconv extension</a>";
- }
- if (!(extension_loaded("xml"))) {
- $errors[] = "PHP is missing the <a href=\"http://php.net/xml\">XML Parser extension</a>";
- }
- if (!(extension_loaded("simplexml"))) {
- $errors[] = "PHP is missing the <a href=\"http://php.net/simplexml\">SimpleXML extension</a>";
- }
- if (!extension_loaded("mbstring")) {
- $errors[] = "PHP is missing the <a href=\"http://php.net/mbstring\">mbstring extension</a>";
- } else if (ini_get("mbstring.func_overload") & MB_OVERLOAD_STRING) {
- $errors[] = "The <a href=\"http://php.net/mbstring\">mbstring extension</a> is overloading PHP's native string functions. Please disable it.";
- }
- if (!function_exists("json_encode")) {
- $errors[] = "PHP is missing the <a href=\"http://php.net/manual/en/book.json.php\">JavaScript Object Notation (JSON) extension</a>. Please install it.";
- }
- if (!ini_get("short_open_tag")) {
- $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.";
- }
- if (!function_exists("ctype_alpha")) {
- $errors[] = "Gallery requires the <a href=\"http://php.net/manual/en/book.ctype.php\">PHP Ctype</a> extension. Please install it.";
- }
- if (self::ini_get_bool("safe_mode")) {
- $errors[] = "Gallery cannot function when PHP is in <a href=\"http://php.net/manual/en/features.safe-mode.php\">Safe Mode</a>. Please disable safe mode.";
- }
- return @$errors;
- }
- /**
- * Convert any possible boolean ini value to true/false.
- * On = on = 1 = true
- * Off = off = 0 = false
- */
- static function ini_get_bool($varname) {
- $value = ini_get($varname);
- if (!strcasecmp("on", $value) || $value == 1 || $value === true) {
- return true;
- }
- if (!strcasecmp("off", $value) || $value == 0 || $value === false) {
- return false;
- }
- return false;
- }
- }