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user.php
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user.php
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<?php
/**
* Part of the Sentry bundle for Laravel.
*
* NOTICE OF LICENSE
*
* Licensed under the 3-clause BSD License.
*
* This source file is subject to the 3-clause BSD License that is
* bundled with this package in the LICENSE file. It is also available at
* the following URL: http://www.opensource.org/licenses/BSD-3-Clause
*
* @package Sentry
* @version 1.0
* @author Cartalyst LLC
* @license BSD License (3-clause)
* @copyright (c) 2011 - 2012, Cartalyst LLC
* @link http://cartalyst.com
*/
namespace Sentry;
use Config;
use DB;
use Lang;
use Str;
use Request;
class SentryUserException extends SentryException {}
class SentryUserNotFoundException extends SentryUserException {}
class SentryPermissionsException extends SentryException {}
/**
* Sentry Auth User Class
*/
class Sentry_User implements \Iterator, \ArrayAccess
{
/**
* @var string Database instance
*/
protected $db_instance = null;
/**
* @var array User
*/
protected $user = array();
/**
* @var array Passwords
*/
protected $passwords = array();
/**
* @var array Password Fields
*/
protected $password_fields = array(
'password',
'password_reset_hash',
'temp_password',
'remember_me',
'activation_hash',
);
/**
* @var array Groups
*/
protected $groups = array();
/**
* @var object Hashing Object
*/
protected $hash = null;
/**
* @var string Table name
*/
protected $table = null;
/**
* @var string User metadata table
*/
protected $table_metadata = null;
/**
* @var string User groups table
*/
protected $table_usergroups = null;
/**
* @var string Login column
*/
protected $login_column = null;
/**
* @var string Login column string (formatted)
*/
protected $login_column_str = '';
/**
* @var array Contains the merged user & group permissions
*/
protected $permissions = array();
/**
* @var array Contains the rules from the sentry config
*/
protected $rules = array();
/**
* Loads in the user object
*
* @param int|string User id or Login Column value
* @return void
* @throws SentryUserNotFoundException
*/
public function __construct($id = null, $check_exists = false)
{
// load and set config
$this->table = strtolower(Config::get('sentry::sentry.table.users'));
$this->table_usergroups = strtolower(Config::get('sentry::sentry.table.users_groups'));
$this->table_metadata = strtolower(Config::get('sentry::sentry.table.users_metadata'));
$this->login_column = strtolower(Config::get('sentry::sentry.login_column'));
$this->login_column_str = ucfirst($this->login_column);
$db_instance = trim(Config::get('sentry::sentry.db_instance'));
try
{
// init a hashing mechanism
$strategy = Config::get('sentry::sentry.hash.strategy');
$options = Config::get('sentry::sentry.hash.strategies.'.$strategy);
$this->hash = Sentry_Hash_Driver::forge($strategy, $options);
}
catch (SentryGroupNotFoundException $e)
{
throw new SentryUserException($e->getMessage());
}
// db_instance check
if ( ! empty($db_instance) )
{
$this->db_instance = $db_instance;
}
// if an ID was passed
if ($id)
{
// make sure ID is valid
if (is_int($id))
{
if ($id <= 0)
{
throw new SentryUserException(__('sentry::sentry.invalid_user_id'));
}
// set field to id for query
$field = 'id';
}
// if ID is not an integer
else
{
// set field to login_column
$field = $this->login_column;
}
//query database for user
$user = DB::connection($this->db_instance)
->table($this->table)
->where($field, '=', $id)
->first();
// if there was a result - update user
if ($user !== null)
{
// if just a user exists check - return true, no need for additional queries
if ($check_exists)
{
return true;
}
$temp = get_object_vars($user);
// query for metadata
$metadata = DB::connection($this->db_instance)
->table($this->table_metadata)
->where('user_id', '=', $temp['id'])
->first();
$temp['metadata'] = (count($metadata)) ? get_object_vars($metadata) : array();
// lets set and remove password fields
$temp = $this->extract_passwords($temp);
$this->user = $temp['user'];
$this->passwords = $temp['passwords'];
}
// user doesn't exist
else
{
throw new SentryUserNotFoundException(__('sentry::sentry.user_not_found'));
}
/**
* fetch the user's groups and assign as array usable via $this->groups
*/
$groups_table = Config::get('sentry::sentry.table.groups');
$groups = DB::connection($this->db_instance)
->table($groups_table)
->where($this->table_usergroups.'.user_id', '=', $this->user['id'])
->join($this->table_usergroups,
$this->table_usergroups.'.group_id', '=', $groups_table.'.id')
->get($groups_table.'.*');
foreach ($groups as &$group)
{
$group = get_object_vars($group);
}
$this->groups = $groups;
/**
* set rules and permissions if enabled
*/
if (Config::get('sentry::sentry.permissions.enabled'))
{
$this->rules = Sentry_Rules::fetch_rules();
$this->permissions = $this->fetch_permissions();
}
}
}
/**
* Register a user - Alias of create()
*
* @param array User array for creation
* @return int
* @throws SentryUserException
*/
public function register($user)
{
return $this->create($user, true);
}
/**
* Create's a new user. Returns user 'id'.
*
* @param array User array for creation
* @return int
* @throws SentryUserException
*/
public function create(array $user, $activation = false)
{
// check for required fields
if (empty($user[$this->login_column]) or empty($user['password']))
{
throw new SentryUserException(
__('sentry::sentry.column_and_password_empty', array('column' => $this->login_column_str))
);
}
// if login_column is set to username - email is still required, so check
if ($this->login_column != 'email' and empty($user['email']))
{
throw new SentryUserException(
__('sentry::sentry.column_email_and_password_empty', array('column' => $this->login_column_str))
);
}
// check to see if login_column is already taken
$user_exists = $this->user_exists($user[$this->login_column]);
if ($user_exists)
{
// create new user object
$temp = new static((int) $user_exists['user']['id']);
// check if account is not activated
if ($activation and $temp->get('activated') != 1)
{
// update and resend activation code
$hash = Str::random(24);
$update = array(
'password' => $user['password'],
'activation_hash' => $hash
);
if ($temp->update($update))
{
return array(
'id' => $temp->user['id'],
'hash' => base64_encode($user[$temp->login_column]).'/'.$hash
);
}
return false;
}
// if login_column is not set to email - also check to make sure email doesn't exist
if ($this->login_column != 'email' and $this->user_exists($user['email'], 'email'))
{
throw new SentryUserException(__('sentry::sentry.email_already_in_use'));
}
throw new SentryUserException(
__('sentry::sentry.column_already_exists', array('column' => $this->login_column_str))
);
}
// set new user values
$new_user = array(
$this->login_column => $user[$this->login_column],
'password' => $this->hash->create_password($user['password']),
'created_at' => $this->sql_timestamp(),
'activated' => (bool) ($activation) ? false : true,
'status' => 1,
) + $user;
// check for metadata
if (array_key_exists('metadata', $new_user))
{
$metadata = $new_user['metadata'];
unset($new_user['metadata']);
}
else
{
$metadata = array();
}
if (array_key_exists('permissions', $new_user))
{
$new_user['permissions'] = json_encode($new_user['permissions']);
}
// set activation hash if activation = true
if ($activation)
{
$hash = Str::random(24);
$new_user['activation_hash'] = $this->hash->create_password($hash);
}
// insert new user
$insert_id= DB::connection($this->db_instance)
->table($this->table)
->insert_get_id($new_user);
// insert into metadata
$metadata = array(
'user_id' => $insert_id
) + $metadata;
DB::connection($this->db_instance)
->table($this->table_metadata)
->insert($metadata);
// return activation hash for emailing if activation = true
if ($activation)
{
// return array of id and hash
if ($insert_id)
{
return array(
'id' => (int) $insert_id,
'hash' => base64_encode($user[$this->login_column]).'/'.$hash
);
}
return false;
}
return ($insert_id) ? (int) $insert_id : false;
}
/**
* Update the current user
*
* @param array Fields to update
* @param bool Whether to hash the password
* @return bool
* @throws SentryUserException
*/
public function update(array $fields, $hash_password = true)
{
// make sure a user id is set
if (empty($this->user))
{
throw new SentryUserException(__('sentry::sentry.no_user_selected'));
}
// init update array
$update = array();
// init user metatdata
$update_metadata = null;
if (array_key_exists($this->login_column, $fields) and
strtolower($fields[$this->login_column]) != strtolower($this->user[$this->login_column]) and
$this->user_exists($fields[$this->login_column]))
{
throw new SentryUserException(
__('sentry::sentry.column_already_exists', array('column' => $this->login_column_str))
);
}
elseif (array_key_exists($this->login_column, $fields) and
$fields[$this->login_column] == '')
{
throw new SentryUserException(
__('sentry::sentry.column_is_empty', array('column' => $this->login_column_str))
);
}
elseif (array_key_exists($this->login_column, $fields))
{
$update[$this->login_column] = $fields[$this->login_column];
unset($fields[$this->login_column]);
}
// if updating email
if (array_key_exists('email', $fields) and
$fields['email'] != $this->user['email'])
{
// make sure email does not already exist
if ($this->user_exists($fields['email'], 'email'))
{
throw new SentryUserException(__('sentry::sentry.email_already_in_use'));
}
$update['email'] = $fields['email'];
unset($fields['email']);
}
// if updating username
if (array_key_exists('username', $fields) and
$fields['username'] != $this->user['username'])
{
// make sure username does not already exist
if ($this->user_exists($fields['username'], 'username'))
{
throw new SentryUserException(__('sentry::sentry.username_already_in_use'));
}
$update['username'] = $fields['username'];
unset($fields['username']);
}
// update password
if (array_key_exists('password', $fields))
{
if (empty($fields['password']))
{
throw new SentryUserException(__('sentry::sentry.password_empty'));
}
if ($hash_password)
{
$fields['password'] = $this->hash->create_password($fields['password']);
}
$update['password'] = $fields['password'];
unset($fields['password']);
}
// update temp password
if (array_key_exists('temp_password', $fields))
{
if ( ! empty($fields['temp_password']))
{
$fields['temp_password'] = $this->hash->create_password($fields['temp_password']);
}
$update['temp_password'] = $fields['temp_password'];
unset($fields['temp_password']);
}
// update password reset hash
if (array_key_exists('password_reset_hash', $fields))
{
if ( ! empty($fields['password_reset_hash']))
{
$fields['password_reset_hash'] = $this->hash->create_password($fields['password_reset_hash']);
}
$update['password_reset_hash'] = $fields['password_reset_hash'];
unset($fields['password_reset_hash']);
}
// update remember me cookie hash
if (array_key_exists('remember_me', $fields))
{
if ( ! empty($fields['remember_me']))
{
$fields['remember_me'] = $this->hash->create_password($fields['remember_me']);
}
$update['remember_me'] = $fields['remember_me'];
unset($fields['remember_me']);
}
if (array_key_exists('activation_hash', $fields))
{
if ( ! empty($fields['activation_hash']))
{
$fields['activation_hash'] = $this->hash->create_password($fields['activation_hash']);
}
$update['activation_hash'] = $fields['activation_hash'];
unset($fields['activation_hash']);
}
if (array_key_exists('last_login', $fields) and ! empty($fields['last_login']))
{
$update['last_login'] = $fields['last_login'];
unset($fields['last_login']);
}
if (array_key_exists('ip_address', $fields))
{
$update['ip_address'] = $fields['ip_address'];
unset($fields['ip_address']);
}
if (array_key_exists('activated', $fields))
{
$update['activated'] = $fields['activated'];
unset($fields['activated']);
}
if (array_key_exists('status', $fields))
{
$update['status'] = $fields['status'];
unset($fields['status']);
}
if (array_key_exists('permissions', $fields))
{
$permissions = $this->process_permissions($fields['permissions']);
$update['permissions'] = json_encode($permissions);
unset($fields['permissions']);
}
if (empty($update) and empty($fields['metadata']))
{
return true;
}
// add update time
$update['updated_at'] = $this->sql_timestamp();
// update user table
if ($update)
{
$update_user = DB::connection($this->db_instance)
->table($this->table)
->join($this->table_metadata,
$this->table_metadata.'.user_id', '=', $this->table.'.id')
->where('id', '=', $this->user['id'])
->update($update);
}
// update metadata table
if ( ! empty($fields['metadata']))
{
$update_metadata = DB::connection($this->db_instance)
->table($this->table_metadata)
->where('user_id', '=', $this->user['id'])
->update($fields['metadata']);
}
else
{
$fields['metadata'] = array();
}
if ($update_user or $update_metadata)
{
$update['metadata'] = $fields['metadata'] + $this->user['metadata'];
// lets remove passwords from global user array
$update = $this->extract_passwords($update);
// change user values in object
$this->user = $update['user'] + $this->user;
$this->passwords = $update['passwords'] + $this->passwords;
return true;
}
return false;
}
/**
* Delete's the current user.
*
* @return bool
* @throws SentryUserException
*/
public function delete()
{
// make sure a user id is set
if (empty($this->user))
{
throw new SentryUserException(__('sentry::sentry.no_user_selected_to_delete'));
}
try
{
DB::connection($this->db_instance)->pdo->beginTransaction();
// delete users groups
$delete_user_groups = DB::connection($this->db_instance)
->table($this->table_usergroups)
->where('user_id', '=', $this->user['id'])
->delete();
// delete users metadata
$delete_user_metadata = DB::connection($this->db_instance)
->table($this->table_metadata)
->where('user_id', '=', $this->user['id'])
->delete();
// delete user from database
$delete_user = DB::connection($this->db_instance)
->table($this->table)
->where('id', '=', $this->user['id'])
->delete();
DB::connection($this->db_instance)->pdo->commit();
}
catch(Database_Exception $e) {
DB::connection($this->db_instance)->pdo->rollBack();
return false;
}
// update user to null
$this->user = array();
$this->passwords = array();
return true;
}
/**
* Enable a User
*
* @return bool
* @throws SentryUserException
*/
public function enable()
{
if ($this->user['status'] == 1)
{
throw new SentryUserException(__('sentry::sentry.user_already_enabled'));
}
return $this->update(array('status' => 1));
}
/**
* Disable a User
*
* @return bool
* @throws SentryUserException
*/
public function disable()
{
if ($this->user['status'] == 0)
{
throw new SentryUserException(__('sentry::sentry.user_already_disabled'));
}
return $this->update(array('status' => 0));
}
/**
* Checks if the Field is set or not.
*
* @param string Field name
* @return bool
*/
public function __isset($field)
{
return array_key_exists($field, $this->user);
}
/**
* Gets a field value of the user
*
* @param string Field name
* @return mixed
* @throws SentryUserException
*/
public function __get($field)
{
return $this->get($field);
}
/**
* Gets a given field (or array of fields).
*
* @param string|array Field(s) to get
* @return mixed
* @throws SentryUserException
*/
public function get($field = null)
{
// make sure a user id is set
if (empty($this->user['id']))
{
throw new SentryUserException(__('sentry::sentry.no_user_selected_to_get'));
}
// if no fields were passed - return entire user
if ($field === null)
{
return $this->user;
}
// if field is an array - return requested fields
else if (is_array($field))
{
$values = array();
// loop through requested fields
foreach ($field as $key)
{
// see if field is a password field
// see if field is a password field
if (in_array($key, $this->password_fields))
{
$val = array_get($this->passwords, $key, '__MISSING_KEY__');
}
else
{
// check to see if field exists in user
$val = array_get($this->user, $key, '__MISSING_KEY__');
}
if ($val !== '__MISSING_KEY__')
{
$values[$key] = $val;
}
else
{
throw new SentryUserException(
__('sentry::sentry.not_found_in_user_object', array('field' => $key))
);
}
}
return $values;
}
// if single field was passed - return its value
else
{
// see if field is a password field
if (in_array($field, $this->password_fields))
{
$val = array_get($this->passwords, $field, '__MISSING_KEY__');
}
else
{
// check to see if field exists in user
$val = array_get($this->user, $field, '__MISSING_KEY__');
}
// if val is not missing, return it
if ($val !== '__MISSING_KEY__')
{
return $val;
}
throw new SentryUserException(__('sentry::sentry.not_found_in_user_object', array('field' => $field)));
}
}
/**
* Changes a user's password
*
* @param string The new password
* @param string Users old password
* @return bool
* @throws SentryUserException
*/
public function change_password($password, $old_password)
{
// make sure old password matches the current password
if ( ! $this->check_password($old_password))
{
throw new SentryUserException(__('sentry::sentry.invalid_old_password'));
}
return $this->update(array('password' => $password));
}
/**
* Returns an array of groups the user is part of.
*
* @return array
*/
public function groups()
{
return $this->groups;
}
/**
* Adds this user to the group.
*
* @param string|int Group ID or group name
* @return bool
* @throws SentryUserException
*/
public function add_to_group($id)
{
if ($this->in_group($id))
{
throw new SentryUserException(__('sentry::sentry.user_already_in_group', array('group' => $id)));
}
$field = 'name';
if (is_numeric($id))
{
$field = 'id';
}
try
{
$group = new Sentry_Group($id);
}
catch (SentryGroupNotFoundException $e)
{
throw new SentryUserException($e->getMessage());
}
$insert_id = DB::connection($this->db_instance)
->table($this->table_usergroups)
->insert_get_id(array(
'user_id' => $this->user['id'],
'group_id' => $group->get('id'),
));
$this->groups[] = array(
'id' => $group->get('id'),
'name' => $group->get('name'),
);
return true;
}
/**
* Removes this user from the group.
*
* @param string|int Group ID or group name
* @return bool
* @throws SentryUserException
*/
public function remove_from_group($id)
{
if ( ! $this->in_group($id))
{
throw new SentryUserException(__('sentry::sentry.user_not_in_group', array('group' => $id)));
}
$field = 'name';
if (is_numeric($id))
{
$field = 'id';
}
try
{
$group = new Sentry_Group($id);
}
catch (SentryGroupNotFoundException $e)
{
throw new SentryUserException($e->getMessage());
}
$delete = DB::connection($this->db_instance)
->table($this->table_usergroups)
->where('user_id', '=', $this->user['id'])
->where('group_id', '=', $group->get('id'))
->delete();
// remove from array
$field = 'name';
if (is_numeric($id))
{
$field = 'id';
}
foreach ($this->groups as $key => $group)
{
if ($group[$field] == $id)
{
unset($this->groups[$key]);
}
}
return (bool) $delete;
}
/**
* Checks if the current user is part of the given group.
*
* @param string Group name
* @return bool
*/
public function in_group($name)
{
$field = 'name';
if (is_numeric($name))
{
$field = 'id';
}
foreach ($this->groups as $group)
{
if (is_array($name) and in_array($group[$field], $name))
{
return true;
}
if ($group[$field] == $name)
{
return true;
}
}
return false;
}
/**
* Checks if the current user is in all the given groups
*
* @param string Group name
* @return bool
*/
public function in_groups(array $groups)
{
foreach ($this->groups as $group)
{
if ( ! in_array($group, $groups))
{
return false;
}
}
return true;
}
/**
* Check if user exists already
*
* @param string The Login Column value
* @param string Column to use for check
* @return bool
*/
protected function user_exists($login, $field = null)
{
// set field value if null
if ($field === null)
{
$field = $this->login_column;
}
// query db to check for login_column
$result = DB::connection($this->db_instance)
->table($this->table)
->where($field, '=', $login)
->first();
if ($result !== null)
{
$result = get_object_vars($result);
$metadata = DB::connection($this->db_instance)
->table($this->table_metadata)
->where('user_id', '=', $result['id'])
->first();
$result['metadata'] = ($metadata != null) ? get_object_vars($metadata) : array();
// lets set and remove password fields
$result = $this->extract_passwords($result);
return $result;
}
return false;
}
/**
* Checks the given password to see if it matches the one in the database.
*
* @param string Password to check
* @param string Password type
* @return bool
*/
public function check_password($password, $field = 'password')
{
if ($this->hash->check_password($password, $this->passwords[$field]))
{
return true;
}
if (Config::get('sentry::sentry.hash.convert.enabled') === true)
{
$strategy = Config::get('sentry::sentry.hash.convert.from');
$options = Config::get('sentry::sentry.hash.strategies.'.$strategy);
$hash = Sentry_Hash_Driver::forge($strategy, $options);
if ($hash->check_password($password, $this->passwords[$field]))
{
$this->update(array(
'password' => $password
));