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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 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 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, $output) !== false;
}
static function unpack_var() {
include(DOCROOT . "installer/init_var.php");
return true;
}
static function unpack_sql($config) {
$prefix = $config["prefix"];
foreach (file(DOCROOT . "installer/install.sql") as $line) {
$buf .= $line;
if (preg_match("/;$/", $buf)) {
if (!mysql_query(self::prepend_prefix($prefix, $buf))) {
return false;
}
$buf = "";
}
}
return true;
}
static function connect($config) {
return @mysql_connect($config["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($config["dbname"]);
}
static function db_empty($config) {
$query = "SHOW TABLES IN {$config[dbname]} LIKE '{$config[prefix]}items'";
return mysql_num_rows(mysql_query($query)) == 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() * rand()), 0, 6);
$hashed_password = $salt . md5($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() * 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);
$sql = "INSERT INTO {sessions} VALUES('$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, 'core', '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);
}
}
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