SpecialChangePassword.php

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<?php
class SpecialChangePassword extends UnlistedSpecialPage {
        public function __construct() {
                parent::__construct( 'ChangePassword' );
        }

        function execute( $par ) {
                global $wgAuth;

                $this->checkReadOnly();

                $request = $this->getRequest();
                $this->mUserName = trim( $request->getVal( 'wpName' ) );
                $this->mOldpass = $request->getVal( 'wpPassword' );
                $this->mNewpass = $request->getVal( 'wpNewPassword' );
                $this->mRetype = $request->getVal( 'wpRetype' );
                $this->mDomain = $request->getVal( 'wpDomain' );

                $this->setHeaders();
                $this->outputHeader();
                $this->getOutput()->disallowUserJs();

                $user = $this->getUser();

                if ( !$user->isLoggedIn() && !LoginForm::getLoginToken() ) {
                        LoginForm::setLoginToken();
                }

                if( !$request->wasPosted() && !$user->isLoggedIn() ) {
                        $this->error( $this->msg( 'resetpass-no-info' )->text() );
                        return;
                }

                if( $request->wasPosted() && $request->getBool( 'wpCancel' ) ) {
                        $this->doReturnTo();
                        return;
                }

                if( $request->wasPosted() && $user->matchEditToken( $request->getVal( 'token' ) ) ) {
                        try {
                                if ( isset( $_SESSION['wsDomain'] ) ) {
                                        $this->mDomain = $_SESSION['wsDomain'];
                                }
                                $wgAuth->setDomain( $this->mDomain );
                                if( !$wgAuth->allowPasswordChange() ) {
                                        $this->error( $this->msg( 'resetpass_forbidden' )->text() );
                                        return;
                                }

                                if ( !$user->isLoggedIn()
                                        && $request->getVal( 'wpLoginOnChangeToken' ) !== LoginForm::getLoginToken()
                                ) {
                                        // Potential CSRF (bug 62497)
                                        $this->error( $this->msg( 'sessionfailure' )->text() );
                                        return false;
                                }

                                $this->attemptReset( $this->mNewpass, $this->mRetype );
                                $this->getOutput()->addWikiMsg( 'resetpass_success' );
                                if( !$user->isLoggedIn() ) {
                                        LoginForm::setLoginToken();
                                        $token = LoginForm::getLoginToken();
                                        $data = array(
                                                'action'       => 'submitlogin',
                                                'wpName'       => $this->mUserName,
                                                'wpDomain'     => $this->mDomain,
                                                'wpLoginToken' => $token,
                                                'wpPassword'   => $this->mNewpass,
                                                'returnto'     => $request->getVal( 'returnto' ),
                                        );
                                        if( $request->getCheck( 'wpRemember' ) ) {
                                                $data['wpRemember'] = 1;
                                        }
                                        $login = new LoginForm( new FauxRequest( $data, true ) );
                                        $login->setContext( $this->getContext() );
                                        $login->execute( null );
                                }
                                $this->doReturnTo();
                        } catch( PasswordError $e ) {
                                $this->error( $e->getMessage() );
                        }
                }
                $this->showForm();
        }

        function doReturnTo() {
                $titleObj = Title::newFromText( $this->getRequest()->getVal( 'returnto' ) );
                if ( !$titleObj instanceof Title ) {
                        $titleObj = Title::newMainPage();
                }
                $this->getOutput()->redirect( $titleObj->getFullURL() );
        }

        function error( $msg ) {
                $this->getOutput()->addHTML( Xml::element('p', array( 'class' => 'error' ), $msg ) );
        }

        function showForm() {
                global $wgCookieExpiration;

                $user = $this->getUser();
                if ( !$this->mUserName ) {
                        $this->mUserName = $user->getName();
                }
                $rememberMe = '';
                if ( !$user->isLoggedIn() ) {
                        $rememberMe = '<tr>' .
                                '<td></td>' .
                                '<td class="mw-input">' .
                                        Xml::checkLabel(
                                                $this->msg( 'remembermypassword' )->numParams( ceil( $wgCookieExpiration / ( 3600 * 24 ) ) )->text(),
                                                'wpRemember', 'wpRemember',
                                                $this->getRequest()->getCheck( 'wpRemember' ) ) .
                                '</td>' .
                        '</tr>';
                        $submitMsg = 'resetpass_submit';
                        $oldpassMsg = 'resetpass-temp-password';
                } else {
                        $oldpassMsg = 'oldpassword';
                        $submitMsg = 'resetpass-submit-loggedin';
                }
                $loginOnChangeToken = '';
                if ( !$user->isLoggedIn() ) {
                        $loginOnChangeToken = Html::hidden( 'wpLoginOnChangeToken', LoginForm::getLoginToken() );
                }
                $this->getOutput()->addHTML(
                        Xml::fieldset( $this->msg( 'resetpass_header' )->text() ) .
                        Xml::openElement( 'form',
                                array(
                                        'method' => 'post',
                                        'action' => $this->getTitle()->getLocalUrl(),
                                        'id' => 'mw-resetpass-form' ) ) . "\n" .
                        Html::hidden( 'token', $user->getEditToken() ) . "\n" .
                        Html::hidden( 'wpName', $this->mUserName ) . "\n" .
                        Html::hidden( 'wpDomain', $this->mDomain ) . "\n" .
                        Html::hidden( 'returnto', $this->getRequest()->getVal( 'returnto' ) ) . "\n" .
                        $loginOnChangeToken .
                        $this->msg( 'resetpass_text' )->parseAsBlock() . "\n" .
                        Xml::openElement( 'table', array( 'id' => 'mw-resetpass-table' ) ) . "\n" .
                        $this->pretty( array(
                                array( 'wpName', 'username', 'text', $this->mUserName ),
                                array( 'wpPassword', $oldpassMsg, 'password', $this->mOldpass ),
                                array( 'wpNewPassword', 'newpassword', 'password', null ),
                                array( 'wpRetype', 'retypenew', 'password', null ),
                        ) ) . "\n" .
                        $rememberMe .
                        "<tr>\n" .
                                "<td></td>\n" .
                                '<td class="mw-input">' .
                                        Xml::submitButton( $this->msg( $submitMsg )->text() ) .
                                        Xml::submitButton( $this->msg( 'resetpass-submit-cancel' )->text(), array( 'name' => 'wpCancel' ) ) .
                                "</td>\n" .
                        "</tr>\n" .
                        Xml::closeElement( 'table' ) .
                        Xml::closeElement( 'form' ) .
                        Xml::closeElement( 'fieldset' ) . "\n"
                );
        }

        function pretty( $fields ) {
                $out = '';
                foreach ( $fields as $list ) {
                        list( $name, $label, $type, $value ) = $list;
                        if( $type == 'text' ) {
                                $field = htmlspecialchars( $value );
                        } else {
                                $attribs = array( 'id' => $name );
                                if ( $name == 'wpNewPassword' || $name == 'wpRetype' ) {
                                        $attribs = array_merge( $attribs,
                                                User::passwordChangeInputAttribs() );
                                }
                                if ( $name == 'wpPassword' ) {
                                        $attribs[] = 'autofocus';
                                }
                                $field = Html::input( $name, $value, $type, $attribs );
                        }
                        $out .= "<tr>\n";
                        $out .= "\t<td class='mw-label'>";
                        if ( $type != 'text' )
                                $out .= Xml::label( $this->msg( $label )->text(), $name );
                        else
                                $out .=  $this->msg( $label )->escaped();
                        $out .= "</td>\n";
                        $out .= "\t<td class='mw-input'>";
                        $out .= $field;
                        $out .= "</td>\n";
                        $out .= "</tr>";
                }
                return $out;
        }

        protected function attemptReset( $newpass, $retype ) {
                $user = User::newFromName( $this->mUserName );
                if( !$user || $user->isAnon() ) {
                        throw new PasswordError( $this->msg( 'nosuchusershort', $this->mUserName )->text() );
                }

                if( $newpass !== $retype ) {
                        wfRunHooks( 'PrefsPasswordAudit', array( $user, $newpass, 'badretype' ) );
                        throw new PasswordError( $this->msg( 'badretype' )->text() );
                }

                $throttleCount = LoginForm::incLoginThrottle( $this->mUserName );
                if ( $throttleCount === true ) {
                        throw new PasswordError( $this->msg( 'login-throttled' )->text() );
                }

                $abortMsg = 'resetpass-abort-generic';
                if ( !wfRunHooks( 'AbortChangePassword', array( $user, $this->mOldpass, $newpass, &$abortMsg ) ) ) {
                        wfRunHooks( 'PrefsPasswordAudit', array( $user, $newpass, 'abortreset' ) );
                        throw new PasswordError( $this->msg( $abortMsg )->text() );
                }

                if( !$user->checkTemporaryPassword($this->mOldpass) && !$user->checkPassword($this->mOldpass) ) {
                        wfRunHooks( 'PrefsPasswordAudit', array( $user, $newpass, 'wrongpassword' ) );
                        throw new PasswordError( $this->msg( 'resetpass-wrong-oldpass' )->text() );
                }

                // Please reset throttle for successful logins, thanks!
                if ( $throttleCount ) {
                        LoginForm::clearLoginThrottle( $this->mUserName );
                }

                try {
                        $user->setPassword( $this->mNewpass );
                        wfRunHooks( 'PrefsPasswordAudit', array( $user, $newpass, 'success' ) );
                        $this->mNewpass = $this->mOldpass = $this->mRetypePass = '';
                } catch( PasswordError $e ) {
                        wfRunHooks( 'PrefsPasswordAudit', array( $user, $newpass, 'error' ) );
                        throw new PasswordError( $e->getMessage() );
                }

                $user->setCookies();
                $user->saveSettings();
        }
}