SpecialChangePassword.php

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<?php
class SpecialChangePassword extends UnlistedSpecialPage {

    protected $mUserName, $mOldpass, $mNewpass, $mRetype, $mDomain;

    public function __construct() {
        parent::__construct( 'ChangePassword', 'editmyprivateinfo' );
    }

    function execute( $par ) {
        global $wgAuth;

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

        $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' );

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

            return;
        }

        $this->checkReadOnly();
        $this->checkPermissions();

        if ( $request->wasPosted() && $user->matchEditToken( $request->getVal( 'token' ) ) ) {
            try {
                $this->mDomain = $wgAuth->getDomain();
                if ( !$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 );

                if ( $user->isLoggedIn() ) {
                    $this->getOutput()->wrapWikiMsg(
                            "<div class=\"successbox\">\n$1\n</div>",
                            'changepassword-success'
                    );
                    $this->getOutput()->returnToMain();
                } else {
                    LoginForm::setLoginToken();
                    $token = LoginForm::getLoginToken();
                    $data = array(
                        'action' => 'submitlogin',
                        'wpName' => $this->mUserName,
                        'wpDomain' => $this->mDomain,
                        'wpLoginToken' => $token,
                        'wpPassword' => $request->getVal( 'wpNewPassword' ),
                    ) + $request->getValues( 'wpRemember', 'returnto', 'returntoquery' );
                    $login = new LoginForm( new DerivativeRequest( $request, $data, true ) );
                    $login->setContext( $this->getContext() );
                    $login->execute( null );
                }

                return;
            } catch ( PasswordError $e ) {
                $this->error( $e->getMessage() );
            }
        }
        $this->showForm();
    }

    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';
        }
        $extraFields = array();
        wfRunHooks( 'ChangePasswordForm', array( &$extraFields ) );
        $prettyFields = array(
            array( 'wpName', 'username', 'text', $this->mUserName ),
            array( 'wpPassword', $oldpassMsg, 'password', $this->mOldpass ),
            array( 'wpNewPassword', 'newpassword', 'password', null ),
            array( 'wpRetype', 'retypenew', 'password', null ),
        );
        $prettyFields = array_merge( $prettyFields, $extraFields );
        $hiddenFields = array(
            'token' => $user->getEditToken(),
            'wpName' => $this->mUserName,
            'wpDomain' => $this->mDomain,
        ) + $this->getRequest()->getValues( 'returnto', 'returntoquery' );
        if ( !$user->isLoggedIn() ) {
            $hiddenFields['wpLoginOnChangeToken'] = LoginForm::getLoginToken();
        }
        $hiddenFieldsStr = '';
        foreach ( $hiddenFields as $fieldname => $fieldvalue ) {
            $hiddenFieldsStr .= Html::hidden( $fieldname, $fieldvalue ) . "\n";
        }
        $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" .
                $hiddenFieldsStr .
                $this->msg( 'resetpass_text' )->parseAsBlock() . "\n" .
                Xml::openElement( 'table', array( 'id' => 'mw-resetpass-table' ) ) . "\n" .
                $this->pretty( $prettyFields ) . "\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 ) {
        global $wgPasswordAttemptThrottle;

        $isSelf = ( $this->mUserName === $this->getUser()->getName() );
        if ( $isSelf ) {
            $user = $this->getUser();
        } else {
            $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 ) {
            $lang = $this->getLanguage();
            throw new PasswordError( $this->msg( 'login-throttled' )
                ->params( $lang->formatDuration( $wgPasswordAttemptThrottle['seconds'] ) )
                ->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->mRetype = '';
        } catch ( PasswordError $e ) {
            wfRunHooks( 'PrefsPasswordAudit', array( $user, $newpass, 'error' ) );
            throw new PasswordError( $e->getMessage() );
        }

        if ( $isSelf ) {
            // This is needed to keep the user connected since
            // changing the password also modifies the user's token.
            $user->setCookies();
        }

        $user->saveSettings();
    }

    protected function getGroupName() {
        return 'users';
    }
}