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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
* @ingroup Auth
*/
namespace MediaWiki\Auth;
use BadMethodCallException;
use MediaWiki\Deferred\DeferredUpdates;
use MediaWiki\MainConfigNames;
use MediaWiki\Password\InvalidPassword;
use MediaWiki\Status\Status;
use MediaWiki\User\UserRigorOptions;
use StatusValue;
use stdClass;
use Wikimedia\Rdbms\DBAccessObjectUtils;
use Wikimedia\Rdbms\IConnectionProvider;
use Wikimedia\Rdbms\IDBAccessObject;
/**
* A primary authentication provider that uses the password field in the 'user' table.
* @ingroup Auth
* @since 1.27
*/
class LocalPasswordPrimaryAuthenticationProvider
extends AbstractPasswordPrimaryAuthenticationProvider
{
/** @var bool If true, this instance is for legacy logins only. */
protected $loginOnly = false;
private IConnectionProvider $dbProvider;
/**
* @param IConnectionProvider $dbProvider
* @param array $params Settings
* - loginOnly: If true, the local passwords are for legacy logins only:
* the local password will be invalidated when authentication is changed
* and new users will not have a valid local password set.
*/
public function __construct( IConnectionProvider $dbProvider, $params = [] ) {
parent::__construct( $params );
$this->loginOnly = !empty( $params['loginOnly'] );
$this->dbProvider = $dbProvider;
}
/**
* Check if the password has expired and needs a reset
*
* @param string $username
* @param stdClass $row A row from the user table
* @return stdClass|null
*/
protected function getPasswordResetData( $username, $row ) {
$now = (int)wfTimestamp();
$expiration = wfTimestampOrNull( TS_UNIX, $row->user_password_expires );
if ( $expiration === null || (int)$expiration >= $now ) {
return null;
}
$grace = $this->config->get( MainConfigNames::PasswordExpireGrace );
if ( (int)$expiration + $grace < $now ) {
$data = [
'hard' => true,
'msg' => Status::newFatal( 'resetpass-expired' )->getMessage(),
];
} else {
$data = [
'hard' => false,
'msg' => Status::newFatal( 'resetpass-expired-soft' )->getMessage(),
];
}
return (object)$data;
}
public function beginPrimaryAuthentication( array $reqs ) {
$req = AuthenticationRequest::getRequestByClass( $reqs, PasswordAuthenticationRequest::class );
if ( !$req || $req->username === null || $req->password === null ) {
return AuthenticationResponse::newAbstain();
}
$username = $this->userNameUtils->getCanonical(
$req->username, UserRigorOptions::RIGOR_USABLE );
if ( $username === false ) {
return AuthenticationResponse::newAbstain();
}
$row = $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder()
->select( [ 'user_id', 'user_password', 'user_password_expires' ] )
->from( 'user' )
->where( [ 'user_name' => $username ] )
->caller( __METHOD__ )->fetchRow();
if ( !$row ) {
// Do not reveal whether its bad username or
// bad password to prevent username enumeration
// on private wikis. (T134100)
return $this->failResponse( $req );
}
$oldRow = clone $row;
// Check for *really* old password hashes that don't even have a type
// The old hash format was just an MD5 hex hash, with no type information
if ( preg_match( '/^[0-9a-f]{32}$/', $row->user_password ) ) {
$row->user_password = ":B:{$row->user_id}:{$row->user_password}";
}
$status = $this->checkPasswordValidity( $username, $req->password );
if ( !$status->isOK() ) {
return $this->getFatalPasswordErrorResponse( $username, $status );
}
$pwhash = $this->getPassword( $row->user_password );
if ( !$pwhash->verify( $req->password ) ) {
if ( $this->config->get( MainConfigNames::LegacyEncoding ) ) {
// Some wikis were converted from ISO 8859-1 to UTF-8, the passwords can't be converted
// Check for this with iconv
$cp1252Password = iconv( 'UTF-8', 'WINDOWS-1252//TRANSLIT', $req->password );
if ( $cp1252Password === $req->password || !$pwhash->verify( $cp1252Password ) ) {
return $this->failResponse( $req );
}
} else {
return $this->failResponse( $req );
}
}
// @codeCoverageIgnoreStart
if ( $this->getPasswordFactory()->needsUpdate( $pwhash ) ) {
$newHash = $this->getPasswordFactory()->newFromPlaintext( $req->password );
DeferredUpdates::addCallableUpdate( function ( $fname ) use ( $newHash, $oldRow ) {
$dbw = $this->dbProvider->getPrimaryDatabase();
$dbw->newUpdateQueryBuilder()
->update( 'user' )
->set( [ 'user_password' => $newHash->toString() ] )
->where( [
'user_id' => $oldRow->user_id,
'user_password' => $oldRow->user_password,
] )
->caller( $fname )
->execute();
} );
}
// @codeCoverageIgnoreEnd
$this->setPasswordResetFlag( $username, $status, $row );
return AuthenticationResponse::newPass( $username );
}
public function testUserCanAuthenticate( $username ) {
$username = $this->userNameUtils->getCanonical(
$username,
UserRigorOptions::RIGOR_USABLE
);
if ( $username === false ) {
return false;
}
$row = $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder()
->select( [ 'user_password' ] )
->from( 'user' )
->where( [ 'user_name' => $username ] )
->caller( __METHOD__ )->fetchRow();
if ( !$row ) {
return false;
}
// Check for *really* old password hashes that don't even have a type
// The old hash format was just an MD5 hex hash, with no type information
if ( preg_match( '/^[0-9a-f]{32}$/', $row->user_password ) ) {
return true;
}
return !$this->getPassword( $row->user_password ) instanceof InvalidPassword;
}
public function testUserExists( $username, $flags = IDBAccessObject::READ_NORMAL ) {
$username = $this->userNameUtils->getCanonical(
$username,
UserRigorOptions::RIGOR_USABLE
);
if ( $username === false ) {
return false;
}
$db = DBAccessObjectUtils::getDBFromRecency( $this->dbProvider, $flags );
return (bool)$db->newSelectQueryBuilder()
->select( [ 'user_id' ] )
->from( 'user' )
->where( [ 'user_name' => $username ] )
->caller( __METHOD__ )->fetchField();
}
public function providerAllowsAuthenticationDataChange(
AuthenticationRequest $req, $checkData = true
) {
// We only want to blank the password if something else will accept the
// new authentication data, so return 'ignore' here.
if ( $this->loginOnly ) {
return StatusValue::newGood( 'ignored' );
}
if ( get_class( $req ) === PasswordAuthenticationRequest::class ) {
if ( !$checkData ) {
return StatusValue::newGood();
}
$username = $this->userNameUtils->getCanonical( $req->username,
UserRigorOptions::RIGOR_USABLE );
if ( $username !== false ) {
$row = $this->dbProvider->getPrimaryDatabase()->newSelectQueryBuilder()
->select( [ 'user_id' ] )
->from( 'user' )
->where( [ 'user_name' => $username ] )
->caller( __METHOD__ )->fetchRow();
if ( $row ) {
$sv = StatusValue::newGood();
if ( $req->password !== null ) {
if ( $req->password !== $req->retype ) {
$sv->fatal( 'badretype' );
} else {
$sv->merge( $this->checkPasswordValidity( $username, $req->password ) );
}
}
return $sv;
}
}
}
return StatusValue::newGood( 'ignored' );
}
public function providerChangeAuthenticationData( AuthenticationRequest $req ) {
$username = $req->username !== null
? $this->userNameUtils->getCanonical( $req->username, UserRigorOptions::RIGOR_USABLE )
: false;
if ( $username === false ) {
return;
}
$pwhash = null;
if ( get_class( $req ) === PasswordAuthenticationRequest::class ) {
if ( $this->loginOnly ) {
$pwhash = $this->getPasswordFactory()->newFromCiphertext( null );
$expiry = null;
} else {
$pwhash = $this->getPasswordFactory()->newFromPlaintext( $req->password );
$expiry = $this->getNewPasswordExpiry( $username );
}
}
if ( $pwhash ) {
$dbw = $this->dbProvider->getPrimaryDatabase();
$dbw->newUpdateQueryBuilder()
->update( 'user' )
->set( [
'user_password' => $pwhash->toString(),
// @phan-suppress-next-line PhanPossiblyUndeclaredVariable expiry is set together with pwhash
'user_password_expires' => $dbw->timestampOrNull( $expiry ),
] )
->where( [ 'user_name' => $username ] )
->caller( __METHOD__ )->execute();
}
}
public function accountCreationType() {
return $this->loginOnly ? self::TYPE_NONE : self::TYPE_CREATE;
}
public function testForAccountCreation( $user, $creator, array $reqs ) {
$req = AuthenticationRequest::getRequestByClass( $reqs, PasswordAuthenticationRequest::class );
$ret = StatusValue::newGood();
if ( !$this->loginOnly && $req && $req->username !== null && $req->password !== null ) {
if ( $req->password !== $req->retype ) {
$ret->fatal( 'badretype' );
} else {
$ret->merge(
$this->checkPasswordValidity( $user->getName(), $req->password )
);
}
}
return $ret;
}
public function beginPrimaryAccountCreation( $user, $creator, array $reqs ) {
if ( $this->accountCreationType() === self::TYPE_NONE ) {
throw new BadMethodCallException( 'Shouldn\'t call this when accountCreationType() is NONE' );
}
$req = AuthenticationRequest::getRequestByClass( $reqs, PasswordAuthenticationRequest::class );
if ( $req && $req->username !== null && $req->password !== null ) {
// Nothing we can do besides claim it, because the user isn't in
// the DB yet
if ( $req->username !== $user->getName() ) {
$req = clone $req;
$req->username = $user->getName();
}
$ret = AuthenticationResponse::newPass( $req->username );
$ret->createRequest = $req;
return $ret;
}
return AuthenticationResponse::newAbstain();
}
public function finishAccountCreation( $user, $creator, AuthenticationResponse $res ) {
if ( $this->accountCreationType() === self::TYPE_NONE ) {
throw new BadMethodCallException( 'Shouldn\'t call this when accountCreationType() is NONE' );
}
// Now that the user is in the DB, set the password on it.
$this->providerChangeAuthenticationData( $res->createRequest );
return null;
}
}