ApiUserrights.php

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<?php

class ApiUserrights extends ApiBase {

    private $mUser = null;

    protected function getUserRightsPage() {
        return new UserrightsPage;
    }

    protected function getAllGroups() {
        return User::getAllGroups();
    }

    public function execute() {
        $pUser = $this->getUser();

        // Deny if the user is blocked and doesn't have the full 'userrights' permission.
        // This matches what Special:UserRights does for the web UI.
        if ( !$pUser->isAllowed( 'userrights' ) ) {
            // @TODO Should the user be blocked from changing user rights if they
            //       are partially blocked?
            $block = $pUser->getBlock();
            if ( $block ) {
                $this->dieBlocked( $block );
            }
        }

        $params = $this->extractRequestParams();

        // Figure out expiry times from the input
        // $params['expiry'] is not set in CentralAuth's ApiGlobalUserRights subclass
        if ( isset( $params['expiry'] ) ) {
            $expiry = (array)$params['expiry'];
        } else {
            $expiry = [ 'infinity' ];
        }
        $add = (array)$params['add'];
        if ( !$add ) {
            $expiry = [];
        } elseif ( count( $expiry ) !== count( $add ) ) {
            if ( count( $expiry ) === 1 ) {
                $expiry = array_fill( 0, count( $add ), $expiry[0] );
            } else {
                $this->dieWithError( [
                    'apierror-toofewexpiries',
                    count( $expiry ),
                    count( $add )
                ] );
            }
        }

        // Validate the expiries
        $groupExpiries = [];
        foreach ( $expiry as $index => $expiryValue ) {
            $group = $add[$index];
            $groupExpiries[$group] = UserrightsPage::expiryToTimestamp( $expiryValue );

            if ( $groupExpiries[$group] === false ) {
                $this->dieWithError( [ 'apierror-invalidexpiry', wfEscapeWikiText( $expiryValue ) ] );
            }

            // not allowed to have things expiring in the past
            if ( $groupExpiries[$group] && $groupExpiries[$group] < wfTimestampNow() ) {
                $this->dieWithError( [ 'apierror-pastexpiry', wfEscapeWikiText( $expiryValue ) ] );
            }
        }

        $user = $this->getUrUser( $params );

        $tags = $params['tags'];

        // Check if user can add tags
        if ( $tags !== null ) {
            $ableToTag = ChangeTags::canAddTagsAccompanyingChange( $tags, $pUser );
            if ( !$ableToTag->isOK() ) {
                $this->dieStatus( $ableToTag );
            }
        }

        $form = $this->getUserRightsPage();
        $form->setContext( $this->getContext() );
        $r['user'] = $user->getName();
        $r['userid'] = $user->getId();
        list( $r['added'], $r['removed'] ) = $form->doSaveUserGroups(
            // Don't pass null to doSaveUserGroups() for array params, cast to empty array
            $user, (array)$add, (array)$params['remove'],
            $params['reason'], (array)$tags, $groupExpiries
        );

        $result = $this->getResult();
        ApiResult::setIndexedTagName( $r['added'], 'group' );
        ApiResult::setIndexedTagName( $r['removed'], 'group' );
        $result->addValue( null, $this->getModuleName(), $r );
    }

    private function getUrUser( array $params ) {
        if ( $this->mUser !== null ) {
            return $this->mUser;
        }

        $this->requireOnlyOneParameter( $params, 'user', 'userid' );

        $user = $params['user'] ?? '#' . $params['userid'];

        $form = $this->getUserRightsPage();
        $form->setContext( $this->getContext() );
        $status = $form->fetchUser( $user );
        if ( !$status->isOK() ) {
            $this->dieStatus( $status );
        }

        $this->mUser = $status->value;

        return $status->value;
    }

    public function mustBePosted() {
        return true;
    }

    public function isWriteMode() {
        return true;
    }

    public function getAllowedParams() {
        $a = [
            'user' => [
                ApiBase::PARAM_TYPE => 'user',
            ],
            'userid' => [
                ApiBase::PARAM_TYPE => 'integer',
            ],
            'add' => [
                ApiBase::PARAM_TYPE => $this->getAllGroups(),
                ApiBase::PARAM_ISMULTI => true
            ],
            'expiry' => [
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_ALLOW_DUPLICATES => true,
                ApiBase::PARAM_DFLT => 'infinite',
            ],
            'remove' => [
                ApiBase::PARAM_TYPE => $this->getAllGroups(),
                ApiBase::PARAM_ISMULTI => true
            ],
            'reason' => [
                ApiBase::PARAM_DFLT => ''
            ],
            'token' => [
                // Standard definition automatically inserted
                ApiBase::PARAM_HELP_MSG_APPEND => [ 'api-help-param-token-webui' ],
            ],
            'tags' => [
                ApiBase::PARAM_TYPE => 'tags',
                ApiBase::PARAM_ISMULTI => true
            ],
        ];
        // CentralAuth's ApiGlobalUserRights subclass can't handle expiries
        if ( !$this->getUserRightsPage()->canProcessExpiries() ) {
            unset( $a['expiry'] );
        }
        return $a;
    }

    public function needsToken() {
        return 'userrights';
    }

    protected function getWebUITokenSalt( array $params ) {
        return $this->getUrUser( $params )->getName();
    }

    protected function getExamplesMessages() {
        $a = [
            'action=userrights&user=FooBot&add=bot&remove=sysop|bureaucrat&token=123ABC'
                => 'apihelp-userrights-example-user',
            'action=userrights&userid=123&add=bot&remove=sysop|bureaucrat&token=123ABC'
                => 'apihelp-userrights-example-userid',
        ];
        if ( $this->getUserRightsPage()->canProcessExpiries() ) {
            $a['action=userrights&user=SometimeSysop&add=sysop&expiry=1%20month&token=123ABC']
                = 'apihelp-userrights-example-expiry';
        }
        return $a;
    }

    public function getHelpUrls() {
        return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:User_group_membership';
    }
}