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<?php
/**
* 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.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\User;
use Iterator;
use LogicException;
use MediaWiki\Auth\AuthManager;
use MediaWiki\Auth\TemporaryPasswordAuthenticationRequest;
use MediaWiki\Config\ServiceOptions;
use MediaWiki\Deferred\DeferredUpdates;
use MediaWiki\Deferred\SendPasswordResetEmailUpdate;
use MediaWiki\HookContainer\HookContainer;
use MediaWiki\HookContainer\HookRunner;
use MediaWiki\MainConfigNames;
use MediaWiki\Message\Message;
use MediaWiki\Parser\Sanitizer;
use MediaWiki\User\Options\UserOptionsLookup;
use Psr\Log\LoggerAwareInterface;
use Psr\Log\LoggerAwareTrait;
use Psr\Log\LoggerInterface;
use StatusValue;
use Wikimedia\MapCacheLRU\MapCacheLRU;
/**
* Password reset helper for functionality shared by the web UI and the API.
*
* Requires the TemporaryPasswordPrimaryAuthenticationProvider and the
* EmailNotificationSecondaryAuthenticationProvider (or something providing equivalent
* functionality) to be enabled.
*/
class PasswordReset implements LoggerAwareInterface {
use LoggerAwareTrait;
private ServiceOptions $config;
private AuthManager $authManager;
private HookRunner $hookRunner;
private UserIdentityLookup $userIdentityLookup;
private UserFactory $userFactory;
private UserNameUtils $userNameUtils;
private UserOptionsLookup $userOptionsLookup;
/**
* In-process cache for isAllowed lookups, by username.
* Contains a StatusValue object
*/
private MapCacheLRU $permissionCache;
/**
* @internal For use by ServiceWiring
*/
public const CONSTRUCTOR_OPTIONS = [
MainConfigNames::EnableEmail,
MainConfigNames::PasswordResetRoutes,
];
/**
* This class is managed by MediaWikiServices, don't instantiate directly.
*
* @param ServiceOptions $config
* @param LoggerInterface $logger
* @param AuthManager $authManager
* @param HookContainer $hookContainer
* @param UserIdentityLookup $userIdentityLookup
* @param UserFactory $userFactory
* @param UserNameUtils $userNameUtils
* @param UserOptionsLookup $userOptionsLookup
*/
public function __construct(
ServiceOptions $config,
LoggerInterface $logger,
AuthManager $authManager,
HookContainer $hookContainer,
UserIdentityLookup $userIdentityLookup,
UserFactory $userFactory,
UserNameUtils $userNameUtils,
UserOptionsLookup $userOptionsLookup
) {
$config->assertRequiredOptions( self::CONSTRUCTOR_OPTIONS );
$this->config = $config;
$this->logger = $logger;
$this->authManager = $authManager;
$this->hookRunner = new HookRunner( $hookContainer );
$this->userIdentityLookup = $userIdentityLookup;
$this->userFactory = $userFactory;
$this->userNameUtils = $userNameUtils;
$this->userOptionsLookup = $userOptionsLookup;
$this->permissionCache = new MapCacheLRU( 1 );
}
/**
* Check if a given user has permission to use this functionality.
* @param User $user
* @since 1.29 Second argument for displayPassword removed.
* @return StatusValue
*/
public function isAllowed( User $user ) {
return $this->permissionCache->getWithSetCallback(
$user->getName(),
function () use ( $user ) {
return $this->computeIsAllowed( $user );
}
);
}
/**
* @since 1.42
* @return StatusValue
*/
public function isEnabled(): StatusValue {
$resetRoutes = $this->config->get( MainConfigNames::PasswordResetRoutes );
if ( !is_array( $resetRoutes ) || !in_array( true, $resetRoutes, true ) ) {
// Maybe password resets are disabled, or there are no allowable routes
return StatusValue::newFatal( 'passwordreset-disabled' );
}
$providerStatus = $this->authManager->allowsAuthenticationDataChange(
new TemporaryPasswordAuthenticationRequest(), false );
if ( !$providerStatus->isGood() ) {
// Maybe the external auth plugin won't allow local password changes
return StatusValue::newFatal( 'resetpass_forbidden-reason',
$providerStatus->getMessage() );
}
if ( !$this->config->get( MainConfigNames::EnableEmail ) ) {
// Maybe email features have been disabled
return StatusValue::newFatal( 'passwordreset-emaildisabled' );
}
return StatusValue::newGood();
}
private function computeIsAllowed( User $user ): StatusValue {
$enabledStatus = $this->isEnabled();
if ( !$enabledStatus->isGood() ) {
return $enabledStatus;
}
if ( !$user->isAllowed( 'editmyprivateinfo' ) ) {
// Maybe not all users have permission to change private data
return StatusValue::newFatal( 'badaccess' );
}
if ( $this->isBlocked( $user ) ) {
// Maybe the user is blocked (check this here rather than relying on the parent
// method as we have a more specific error message to use here, and we want to
// ignore some types of blocks)
return StatusValue::newFatal( 'blocked-mailpassword' );
}
return StatusValue::newGood();
}
/**
* Do a password reset. Authorization is the caller's responsibility.
*
* Process the form.
*
* At this point, we know that the user passes all the criteria in
* userCanExecute(), and if the data array contains 'Username', etc., then Username
* resets are allowed.
*
* @since 1.29 Fourth argument for displayPassword removed.
* @param User $performingUser The user that does the password reset
* @param string|null $username The user whose password is reset
* @param string|null $email Alternative way to specify the user
* @return StatusValue
*/
public function execute(
User $performingUser,
$username = null,
$email = null
) {
if ( !$this->isAllowed( $performingUser )->isGood() ) {
throw new LogicException(
'User ' . $performingUser->getName() . ' is not allowed to reset passwords'
);
}
// Check against the rate limiter. If the $wgRateLimit is reached, we want to pretend
// that the request was good to avoid displaying an error message.
if ( $performingUser->pingLimiter( 'mailpassword' ) ) {
return StatusValue::newGood();
}
// We need to have a valid IP address for the hook 'User::mailPasswordInternal', but per T20347,
// we should send the user's name if they're logged in.
$ip = $performingUser->getRequest()->getIP();
if ( !$ip ) {
return StatusValue::newFatal( 'badipaddress' );
}
$resetRoutes = $this->config->get( MainConfigNames::PasswordResetRoutes )
+ [ 'username' => false, 'email' => false ];
if ( !$resetRoutes['username'] || $username === '' ) {
$username = null;
}
if ( !$resetRoutes['email'] || $email === '' ) {
$email = null;
}
if ( $username !== null && !$this->userNameUtils->getCanonical( $username ) ) {
return StatusValue::newFatal( 'noname' );
}
if ( $email !== null && !Sanitizer::validateEmail( $email ) ) {
return StatusValue::newFatal( 'passwordreset-invalidemail' );
}
// At this point, $username and $email are either valid or not provided
/** @var User[] $users */
$users = [];
if ( $username !== null ) {
$user = $this->userFactory->newFromName( $username );
// User must have an email address to attempt sending a password reset email
if ( $user && $user->isRegistered() && $user->getEmail() && (
!$this->userOptionsLookup->getBoolOption( $user, 'requireemail' ) ||
$user->getEmail() === $email
) ) {
// Either providing the email in the form is not required to request a reset,
// or the correct email was provided
$users[] = $user;
}
} elseif ( $email !== null ) {
foreach ( $this->getUsersByEmail( $email ) as $userIdent ) {
// Skip users whose preference 'requireemail' is on since the username was not submitted
if ( $this->userOptionsLookup->getBoolOption( $userIdent, 'requireemail' ) ) {
continue;
}
$users[] = $this->userFactory->newFromUserIdentity( $userIdent );
}
} else {
// The user didn't supply any data
return StatusValue::newFatal( 'passwordreset-nodata' );
}
// Check for hooks (captcha etc.), and allow them to modify the list of users
$data = [
'Username' => $username,
'Email' => $email,
];
$error = [];
if ( !$this->hookRunner->onSpecialPasswordResetOnSubmit( $users, $data, $error ) ) {
return StatusValue::newFatal( Message::newFromSpecifier( $error ) );
}
if ( !$users ) {
// Don't reveal whether a username or email address is in use
return StatusValue::newGood();
}
// Get the first element in $users by using `reset` function since
// the key '0' might have been unset from $users array by a hook handler.
$firstUser = reset( $users );
$this->hookRunner->onUser__mailPasswordInternal( $performingUser, $ip, $firstUser );
$result = StatusValue::newGood();
$reqs = [];
foreach ( $users as $user ) {
$req = TemporaryPasswordAuthenticationRequest::newRandom();
$req->username = $user->getName();
$req->mailpassword = true;
$req->caller = $performingUser->getName();
$status = $this->authManager->allowsAuthenticationDataChange( $req, true );
// If the status is good and the value is 'throttled-mailpassword', we want to pretend
// that the request was good to avoid displaying an error message and disclose
// if a reset password was previously sent.
if ( $status->isGood() && $status->getValue() === 'throttled-mailpassword' ) {
return StatusValue::newGood();
}
if ( $status->isGood() && $status->getValue() !== 'ignored' ) {
$reqs[] = $req;
} elseif ( $result->isGood() ) {
// only record the first error, to avoid exposing the number of users having the
// same email address
if ( $status->getValue() === 'ignored' ) {
$status = StatusValue::newFatal( 'passwordreset-ignored' );
}
$result->merge( $status );
}
}
$logContext = [
'requestingIp' => $ip,
'requestingUser' => $performingUser->getName(),
'targetUsername' => $username,
'targetEmail' => $email,
];
if ( !$result->isGood() ) {
$this->logger->info(
"{requestingUser} attempted password reset of {targetUsername} but failed",
$logContext + [ 'errors' => $result->getErrors() ]
);
return $result;
}
DeferredUpdates::addUpdate(
new SendPasswordResetEmailUpdate( $this->authManager, $reqs, $logContext ),
DeferredUpdates::POSTSEND
);
return StatusValue::newGood();
}
/**
* Check whether the user is blocked.
* Ignores certain types of system blocks that are only meant to force users to log in.
* @param User $user
* @return bool
* @since 1.30
*/
private function isBlocked( User $user ) {
$block = $user->getBlock();
return $block && $block->appliesToPasswordReset();
}
/**
* @note This is protected to allow configuring in tests. This class is not stable to extend.
*
* @param string $email
*
* @return Iterator<UserIdentity>
*/
protected function getUsersByEmail( $email ) {
return $this->userIdentityLookup->newSelectQueryBuilder()
->join( 'user', null, [ "actor_user=user_id" ] )
->where( [ 'user_email' => $email ] )
->caller( __METHOD__ )
->fetchUserIdentities();
}
}
/** @deprecated class alias since 1.41 */
class_alias( PasswordReset::class, 'PasswordReset' );