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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.
*/
/**
* This is the API for handling users.
*
* Note: by design, this class does not do any permission checking.
*/
class user_Core {
/**
* Initialize the provider so it is ready to use
*/
static function activate() {
$db = Database::instance();
$db->query("CREATE TABLE IF NOT EXISTS {users} (
`id` int(9) NOT NULL auto_increment,
`name` varchar(32) NOT NULL,
`full_name` varchar(255) NOT NULL,
`password` varchar(64) NOT NULL,
`login_count` int(10) unsigned NOT NULL DEFAULT 0,
`last_login` int(10) unsigned NOT NULL DEFAULT 0,
`email` varchar(64) default NULL,
`admin` BOOLEAN default 0,
`guest` BOOLEAN default 0,
`hash` char(32) default NULL,
`url` varchar(255) default NULL,
`locale` char(10) default NULL,
PRIMARY KEY (`id`),
UNIQUE KEY(`hash`),
UNIQUE KEY(`name`))
DEFAULT CHARSET=utf8;");
$db->query("CREATE TABLE IF NOT EXISTS {groups} (
`id` int(9) NOT NULL auto_increment,
`name` char(64) default NULL,
`special` BOOLEAN default 0,
PRIMARY KEY (`id`),
UNIQUE KEY(`name`))
DEFAULT CHARSET=utf8;");
$db->query("CREATE TABLE IF NOT EXISTS {groups_users} (
`group_id` int(9) NOT NULL,
`user_id` int(9) NOT NULL,
PRIMARY KEY (`group_id`, `user_id`),
UNIQUE KEY(`user_id`, `group_id`))
DEFAULT CHARSET=utf8;");
$everybody = group::create("Everybody");
$everybody->special = true;
$everybody->save();
$registered = group::create("Registered Users");
$registered->special = true;
$registered->save();
$guest = user::create("guest", "Guest User", "");
$guest->guest = true;
$guest->remove($registered);
$guest->save();
$admin = user::create("admin", "Gallery Administrator", "admin");
$admin->admin = true;
$admin->save();
// Let the admin own everything
$db->query("update {items} set owner_id = {$admin->id}");
$root = ORM::factory("item", 1);
access::allow($everybody, "view", $root);
access::allow($everybody, "view_full", $root);
access::allow($registered, "view", $root);
access::allow($registered, "view_full", $root);
}
/**
* Cleanup up this provider so it is unavailable for use and won't conflict with the current driver
*/
static function deactivate() {
// Delete all users and groups so that we give other modules an opportunity to clean up
foreach (ORM::factory("user")->find_all() as $user) {
$user->delete();
}
foreach (ORM::factory("group")->find_all() as $group) {
$group->delete();
}
$db = Database::instance();
$db->query("DROP TABLE IF EXISTS {users};");
$db->query("DROP TABLE IF EXISTS {groups};");
$db->query("DROP TABLE IF EXISTS {groups_users};");
}
/**
* Return the guest user.
*
* @return User_Model the user object
*/
static function guest() {
return model_cache::get("user", 1);
}
/**
* Create a new user.
*
* @param string $name
* @param string $full_name
* @param string $password
* @return User_Definition the user object
*/
static function create($name, $full_name, $password) {
$user = ORM::factory("user")->where("name", $name)->find();
if ($user->loaded) {
throw new Exception("@todo USER_ALREADY_EXISTS $name");
}
$user->name = $name;
$user->full_name = $full_name;
$user->password = $password;
// Required groups
$user->add(group::everybody());
$user->add(group::registered_users());
$user->save();
return $user;
}
/**
* Hash the password to the internal value
* @param string $password the user password
* @param string The hashed equivalent
*/
static function hash_password($password) {
require_once(MODPATH . "user/lib/PasswordHash.php");
$hashGenerator = new PasswordHash(10, true);
return $hashGenerator->HashPassword($password);
}
/**
* Look up a user by id.
* @param integer $id the user id
* @return User_Definition the user object, or null if the id was invalid.
*/
static function lookup($id) {
return self::lookup_by_field("id", $id);
}
/**
* Look up a user by name.
* @param integer $name the user name
* @return User_Definition the user object, or null if the name was invalid.
*/
static function lookup_by_name($name) {
return self::lookup_by_field("name", $name);
}
static function lookup_by_field($field_name, $value) {
try {
$user = model_cache::get("user", $value, $field_name);
if ($user->loaded) {
return $user;
}
} catch (Exception $e) {
if (strpos($e->getMessage(), "MISSING_MODEL") === false) {
throw $e;
}
}
return null;
}
}
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