ApiUnblock.php

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<?php
class ApiUnblock extends ApiBase {

        public function __construct( $main, $action ) {
                parent::__construct( $main, $action );
        }

        public function execute() {
                $user = $this->getUser();
                $params = $this->extractRequestParams();

                if ( $params['gettoken'] ) {
                        // If we're in JSON callback mode, no tokens can be obtained
                        if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
                                $this->dieUsage( 'Cannot get token when using a callback', 'aborted' );
                        }
                        $res['unblocktoken'] = $user->getEditToken( '', $this->getMain()->getRequest() );
                        $this->getResult()->addValue( null, $this->getModuleName(), $res );
                        return;
                }

                if ( is_null( $params['id'] ) && is_null( $params['user'] ) ) {
                        $this->dieUsageMsg( 'unblock-notarget' );
                }
                if ( !is_null( $params['id'] ) && !is_null( $params['user'] ) ) {
                        $this->dieUsageMsg( 'unblock-idanduser' );
                }

                if ( !$user->isAllowed( 'block' ) ) {
                        $this->dieUsageMsg( 'cantunblock' );
                }
                # bug 15810: blocked admins should have limited access here
                if ( $user->isBlocked() ) {
                        $status = SpecialBlock::checkUnblockSelf( $params['user'], $user );
                        if ( $status !== true ) {
                                $this->dieUsageMsg( $status );
                        }
                }

                $data = array(
                        'Target' => is_null( $params['id'] ) ? $params['user'] : "#{$params['id']}",
                        'Reason' => is_null( $params['reason'] ) ? '' : $params['reason']
                );
                $block = Block::newFromTarget( $data['Target'] );
                $retval = SpecialUnblock::processUnblock( $data, $this->getContext() );
                if ( $retval !== true ) {
                        $this->dieUsageMsg( $retval[0] );
                }

                $res['id'] = $block->getId();
                $target = $block->getType() == Block::TYPE_AUTO ? '' : $block->getTarget();
                $res['user'] = $target instanceof User ? $target->getName() : $target;
                $res['reason'] = $params['reason'];
                $this->getResult()->addValue( null, $this->getModuleName(), $res );
        }

        public function mustBePosted() {
                return true;
        }

        public function isWriteMode() {
                return true;
        }

        public function getAllowedParams() {
                return array(
                        'id' => array(
                                ApiBase::PARAM_TYPE => 'integer',
                        ),
                        'user' => null,
                        'token' => null,
                        'gettoken' => false,
                        'reason' => null,
                );
        }

        public function getParamDescription() {
                $p = $this->getModulePrefix();
                return array(
                        'id' => "ID of the block you want to unblock (obtained through list=blocks). Cannot be used together with {$p}user",
                        'user' => "Username, IP address or IP range you want to unblock. Cannot be used together with {$p}id",
                        'token' => "An unblock token previously obtained through the gettoken parameter or {$p}prop=info",
                        'gettoken' => 'If set, an unblock token will be returned, and no other action will be taken',
                        'reason' => 'Reason for unblock (optional)',
                );
        }

        public function getDescription() {
                return 'Unblock a user';
        }

        public function getPossibleErrors() {
                return array_merge( parent::getPossibleErrors(), array(
                        array( 'unblock-notarget' ),
                        array( 'unblock-idanduser' ),
                        array( 'cantunblock' ),
                        array( 'ipbblocked' ),
                        array( 'ipbnounblockself' ),
                ) );
        }

        public function needsToken() {
                return true;
        }

        public function getTokenSalt() {
                return '';
        }

        public function getExamples() {
                return array(
                        'api.php?action=unblock&id=105',
                        'api.php?action=unblock&user=Bob&reason=Sorry%20Bob'
                );
        }

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

        public function getVersion() {
                return __CLASS__ . ': $Id$';
        }
}