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diff --git a/www/wiki/includes/ProtectionForm.php b/www/wiki/includes/ProtectionForm.php
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+<?php
+/**
+ * Page protection
+ *
+ * Copyright © 2005 Brion Vibber <brion@pobox.com>
+ * https://www.mediawiki.org/
+ *
+ * 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
+ */
+use MediaWiki\MediaWikiServices;
+
+/**
+ * Handles the page protection UI and backend
+ */
+class ProtectionForm {
+	/** @var array A map of action to restriction level, from request or default */
+	protected $mRestrictions = [];
+
+	/** @var string The custom/additional protection reason */
+	protected $mReason = '';
+
+	/** @var string The reason selected from the list, blank for other/additional */
+	protected $mReasonSelection = '';
+
+	/** @var bool True if the restrictions are cascading, from request or existing protection */
+	protected $mCascade = false;
+
+	/** @var array Map of action to "other" expiry time. Used in preference to mExpirySelection. */
+	protected $mExpiry = [];
+
+	/**
+	 * @var array Map of action to value selected in expiry drop-down list.
+	 * Will be set to 'othertime' whenever mExpiry is set.
+	 */
+	protected $mExpirySelection = [];
+
+	/** @var array Permissions errors for the protect action */
+	protected $mPermErrors = [];
+
+	/** @var array Types (i.e. actions) for which levels can be selected */
+	protected $mApplicableTypes = [];
+
+	/** @var array Map of action to the expiry time of the existing protection */
+	protected $mExistingExpiry = [];
+
+	/** @var IContextSource */
+	private $mContext;
+
+	function __construct( Article $article ) {
+		// Set instance variables.
+		$this->mArticle = $article;
+		$this->mTitle = $article->getTitle();
+		$this->mApplicableTypes = $this->mTitle->getRestrictionTypes();
+		$this->mContext = $article->getContext();
+
+		// Check if the form should be disabled.
+		// If it is, the form will be available in read-only to show levels.
+		$this->mPermErrors = $this->mTitle->getUserPermissionsErrors(
+			'protect',
+			$this->mContext->getUser(),
+			$this->mContext->getRequest()->wasPosted() ? 'secure' : 'full' // T92357
+		);
+		if ( wfReadOnly() ) {
+			$this->mPermErrors[] = [ 'readonlytext', wfReadOnlyReason() ];
+		}
+		$this->disabled = $this->mPermErrors != [];
+		$this->disabledAttrib = $this->disabled
+			? [ 'disabled' => 'disabled' ]
+			: [];
+
+		$this->loadData();
+	}
+
+	/**
+	 * Loads the current state of protection into the object.
+	 */
+	function loadData() {
+		$levels = MWNamespace::getRestrictionLevels(
+			$this->mTitle->getNamespace(), $this->mContext->getUser()
+		);
+		$this->mCascade = $this->mTitle->areRestrictionsCascading();
+
+		$request = $this->mContext->getRequest();
+		$this->mReason = $request->getText( 'mwProtect-reason' );
+		$this->mReasonSelection = $request->getText( 'wpProtectReasonSelection' );
+		$this->mCascade = $request->getBool( 'mwProtect-cascade', $this->mCascade );
+
+		foreach ( $this->mApplicableTypes as $action ) {
+			// @todo FIXME: This form currently requires individual selections,
+			// but the db allows multiples separated by commas.
+
+			// Pull the actual restriction from the DB
+			$this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );
+
+			if ( !$this->mRestrictions[$action] ) {
+				// No existing expiry
+				$existingExpiry = '';
+			} else {
+				$existingExpiry = $this->mTitle->getRestrictionExpiry( $action );
+			}
+			$this->mExistingExpiry[$action] = $existingExpiry;
+
+			$requestExpiry = $request->getText( "mwProtect-expiry-$action" );
+			$requestExpirySelection = $request->getVal( "wpProtectExpirySelection-$action" );
+
+			if ( $requestExpiry ) {
+				// Custom expiry takes precedence
+				$this->mExpiry[$action] = $requestExpiry;
+				$this->mExpirySelection[$action] = 'othertime';
+			} elseif ( $requestExpirySelection ) {
+				// Expiry selected from list
+				$this->mExpiry[$action] = '';
+				$this->mExpirySelection[$action] = $requestExpirySelection;
+			} elseif ( $existingExpiry ) {
+				// Use existing expiry in its own list item
+				$this->mExpiry[$action] = '';
+				$this->mExpirySelection[$action] = $existingExpiry;
+			} else {
+				// Catches 'infinity' - Existing expiry is infinite, use "infinite" in drop-down
+				// Final default: infinite
+				$this->mExpiry[$action] = '';
+				$this->mExpirySelection[$action] = 'infinite';
+			}
+
+			$val = $request->getVal( "mwProtect-level-$action" );
+			if ( isset( $val ) && in_array( $val, $levels ) ) {
+				$this->mRestrictions[$action] = $val;
+			}
+		}
+	}
+
+	/**
+	 * Get the expiry time for a given action, by combining the relevant inputs.
+	 *
+	 * @param string $action
+	 *
+	 * @return string|false 14-char timestamp or "infinity", or false if the input was invalid
+	 */
+	function getExpiry( $action ) {
+		if ( $this->mExpirySelection[$action] == 'existing' ) {
+			return $this->mExistingExpiry[$action];
+		} elseif ( $this->mExpirySelection[$action] == 'othertime' ) {
+			$value = $this->mExpiry[$action];
+		} else {
+			$value = $this->mExpirySelection[$action];
+		}
+		if ( wfIsInfinity( $value ) ) {
+			$time = 'infinity';
+		} else {
+			$unix = strtotime( $value );
+
+			if ( !$unix || $unix === -1 ) {
+				return false;
+			}
+
+			// @todo FIXME: Non-qualified absolute times are not in users specified timezone
+			// and there isn't notice about it in the ui
+			$time = wfTimestamp( TS_MW, $unix );
+		}
+		return $time;
+	}
+
+	/**
+	 * Main entry point for action=protect and action=unprotect
+	 */
+	function execute() {
+		if ( MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace() ) === [ '' ] ) {
+			throw new ErrorPageError( 'protect-badnamespace-title', 'protect-badnamespace-text' );
+		}
+
+		if ( $this->mContext->getRequest()->wasPosted() ) {
+			if ( $this->save() ) {
+				$q = $this->mArticle->isRedirect() ? 'redirect=no' : '';
+				$this->mContext->getOutput()->redirect( $this->mTitle->getFullURL( $q ) );
+			}
+		} else {
+			$this->show();
+		}
+	}
+
+	/**
+	 * Show the input form with optional error message
+	 *
+	 * @param string $err Error message or null if there's no error
+	 */
+	function show( $err = null ) {
+		$out = $this->mContext->getOutput();
+		$out->setRobotPolicy( 'noindex,nofollow' );
+		$out->addBacklinkSubtitle( $this->mTitle );
+
+		if ( is_array( $err ) ) {
+			$out->wrapWikiMsg( "<p class='error'>\n$1\n</p>\n", $err );
+		} elseif ( is_string( $err ) ) {
+			$out->addHTML( "<p class='error'>{$err}</p>\n" );
+		}
+
+		if ( $this->mTitle->getRestrictionTypes() === [] ) {
+			// No restriction types available for the current title
+			// this might happen if an extension alters the available types
+			$out->setPageTitle( $this->mContext->msg(
+				'protect-norestrictiontypes-title',
+				$this->mTitle->getPrefixedText()
+			) );
+			$out->addWikiText( $this->mContext->msg( 'protect-norestrictiontypes-text' )->plain() );
+
+			// Show the log in case protection was possible once
+			$this->showLogExtract( $out );
+			// return as there isn't anything else we can do
+			return;
+		}
+
+		list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
+		if ( $cascadeSources && count( $cascadeSources ) > 0 ) {
+			$titles = '';
+
+			foreach ( $cascadeSources as $title ) {
+				$titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
+			}
+
+			/** @todo FIXME: i18n issue, should use formatted number. */
+			$out->wrapWikiMsg(
+				"<div id=\"mw-protect-cascadeon\">\n$1\n" . $titles . "</div>",
+				[ 'protect-cascadeon', count( $cascadeSources ) ]
+			);
+		}
+
+		# Show an appropriate message if the user isn't allowed or able to change
+		# the protection settings at this time
+		if ( $this->disabled ) {
+			$out->setPageTitle(
+				$this->mContext->msg( 'protect-title-notallowed',
+					$this->mTitle->getPrefixedText() )
+			);
+			$out->addWikiText( $out->formatPermissionsErrorMessage( $this->mPermErrors, 'protect' ) );
+		} else {
+			$out->setPageTitle( $this->mContext->msg( 'protect-title', $this->mTitle->getPrefixedText() ) );
+			$out->addWikiMsg( 'protect-text',
+				wfEscapeWikiText( $this->mTitle->getPrefixedText() ) );
+		}
+
+		$out->addHTML( $this->buildForm() );
+		$this->showLogExtract( $out );
+	}
+
+	/**
+	 * Save submitted protection form
+	 *
+	 * @return bool Success
+	 */
+	function save() {
+		# Permission check!
+		if ( $this->disabled ) {
+			$this->show();
+			return false;
+		}
+
+		$request = $this->mContext->getRequest();
+		$user = $this->mContext->getUser();
+		$out = $this->mContext->getOutput();
+		$token = $request->getVal( 'wpEditToken' );
+		if ( !$user->matchEditToken( $token, [ 'protect', $this->mTitle->getPrefixedDBkey() ] ) ) {
+			$this->show( [ 'sessionfailure' ] );
+			return false;
+		}
+
+		# Create reason string. Use list and/or custom string.
+		$reasonstr = $this->mReasonSelection;
+		if ( $reasonstr != 'other' && $this->mReason != '' ) {
+			// Entry from drop down menu + additional comment
+			$reasonstr .= $this->mContext->msg( 'colon-separator' )->text() . $this->mReason;
+		} elseif ( $reasonstr == 'other' ) {
+			$reasonstr = $this->mReason;
+		}
+		$expiry = [];
+		foreach ( $this->mApplicableTypes as $action ) {
+			$expiry[$action] = $this->getExpiry( $action );
+			if ( empty( $this->mRestrictions[$action] ) ) {
+				continue; // unprotected
+			}
+			if ( !$expiry[$action] ) {
+				$this->show( [ 'protect_expiry_invalid' ] );
+				return false;
+			}
+			if ( $expiry[$action] < wfTimestampNow() ) {
+				$this->show( [ 'protect_expiry_old' ] );
+				return false;
+			}
+		}
+
+		$this->mCascade = $request->getBool( 'mwProtect-cascade' );
+
+		$status = $this->mArticle->doUpdateRestrictions(
+			$this->mRestrictions,
+			$expiry,
+			$this->mCascade,
+			$reasonstr,
+			$user
+		);
+
+		if ( !$status->isOK() ) {
+			$this->show( $out->parseInline( $status->getWikiText() ) );
+			return false;
+		}
+
+		/**
+		 * Give extensions a change to handle added form items
+		 *
+		 * @since 1.19 you can (and you should) return false to abort saving;
+		 *             you can also return an array of message name and its parameters
+		 */
+		$errorMsg = '';
+		if ( !Hooks::run( 'ProtectionForm::save', [ $this->mArticle, &$errorMsg, $reasonstr ] ) ) {
+			if ( $errorMsg == '' ) {
+				$errorMsg = [ 'hookaborted' ];
+			}
+		}
+		if ( $errorMsg != '' ) {
+			$this->show( $errorMsg );
+			return false;
+		}
+
+		WatchAction::doWatchOrUnwatch( $request->getCheck( 'mwProtectWatch' ), $this->mTitle, $user );
+
+		return true;
+	}
+
+	/**
+	 * Build the input form
+	 *
+	 * @return string HTML form
+	 */
+	function buildForm() {
+		$context = $this->mContext;
+		$user = $context->getUser();
+		$output = $context->getOutput();
+		$lang = $context->getLanguage();
+		$conf = $context->getConfig();
+		$cascadingRestrictionLevels = $conf->get( 'CascadingRestrictionLevels' );
+		$oldCommentSchema = $conf->get( 'CommentTableSchemaMigrationStage' ) === MIGRATION_OLD;
+		$out = '';
+		if ( !$this->disabled ) {
+			$output->addModules( 'mediawiki.legacy.protect' );
+			$output->addJsConfigVars( 'wgCascadeableLevels', $cascadingRestrictionLevels );
+			$out .= Xml::openElement( 'form', [ 'method' => 'post',
+				'action' => $this->mTitle->getLocalURL( 'action=protect' ),
+				'id' => 'mw-Protect-Form' ] );
+		}
+
+		$out .= Xml::openElement( 'fieldset' ) .
+			Xml::element( 'legend', null, $context->msg( 'protect-legend' )->text() ) .
+			Xml::openElement( 'table', [ 'id' => 'mwProtectSet' ] ) .
+			Xml::openElement( 'tbody' );
+
+		$scExpiryOptions = wfMessage( 'protect-expiry-options' )->inContentLanguage()->text();
+		$showProtectOptions = $scExpiryOptions !== '-' && !$this->disabled;
+
+		// Not all languages have V_x <-> N_x relation
+		foreach ( $this->mRestrictions as $action => $selected ) {
+			// Messages:
+			// restriction-edit, restriction-move, restriction-create, restriction-upload
+			$msg = $context->msg( 'restriction-' . $action );
+			$out .= "<tr><td>" .
+			Xml::openElement( 'fieldset' ) .
+			Xml::element( 'legend', null, $msg->exists() ? $msg->text() : $action ) .
+			Xml::openElement( 'table', [ 'id' => "mw-protect-table-$action" ] ) .
+				"<tr><td>" . $this->buildSelector( $action, $selected ) . "</td></tr><tr><td>";
+
+			$mProtectexpiry = Xml::label(
+				$context->msg( 'protectexpiry' )->text(),
+				"mwProtectExpirySelection-$action"
+			);
+			$mProtectother = Xml::label(
+				$context->msg( 'protect-othertime' )->text(),
+				"mwProtect-$action-expires"
+			);
+
+			$expiryFormOptions = new XmlSelect(
+				"wpProtectExpirySelection-$action",
+				"mwProtectExpirySelection-$action",
+				$this->mExpirySelection[$action]
+			);
+			$expiryFormOptions->setAttribute( 'tabindex', '2' );
+			if ( $this->disabled ) {
+				$expiryFormOptions->setAttribute( 'disabled', 'disabled' );
+			}
+
+			if ( $this->mExistingExpiry[$action] ) {
+				if ( $this->mExistingExpiry[$action] == 'infinity' ) {
+					$existingExpiryMessage = $context->msg( 'protect-existing-expiry-infinity' );
+				} else {
+					$timestamp = $lang->userTimeAndDate( $this->mExistingExpiry[$action], $user );
+					$d = $lang->userDate( $this->mExistingExpiry[$action], $user );
+					$t = $lang->userTime( $this->mExistingExpiry[$action], $user );
+					$existingExpiryMessage = $context->msg(
+						'protect-existing-expiry',
+						$timestamp,
+						$d,
+						$t
+					);
+				}
+				$expiryFormOptions->addOption( $existingExpiryMessage->text(), 'existing' );
+			}
+
+			$expiryFormOptions->addOption(
+				$context->msg( 'protect-othertime-op' )->text(),
+				'othertime'
+			);
+			foreach ( explode( ',', $scExpiryOptions ) as $option ) {
+				if ( strpos( $option, ":" ) === false ) {
+					$show = $value = $option;
+				} else {
+					list( $show, $value ) = explode( ":", $option );
+				}
+				$expiryFormOptions->addOption( $show, htmlspecialchars( $value ) );
+			}
+			# Add expiry dropdown
+			if ( $showProtectOptions && !$this->disabled ) {
+				$out .= "
+					<table><tr>
+						<td class='mw-label'>
+							{$mProtectexpiry}
+						</td>
+						<td class='mw-input'>" .
+							$expiryFormOptions->getHTML() .
+						"</td>
+					</tr></table>";
+			}
+			# Add custom expiry field
+			$attribs = [ 'id' => "mwProtect-$action-expires" ] + $this->disabledAttrib;
+			$out .= "<table><tr>
+					<td class='mw-label'>" .
+						$mProtectother .
+					'</td>
+					<td class="mw-input">' .
+						Xml::input( "mwProtect-expiry-$action", 50, $this->mExpiry[$action], $attribs ) .
+					'</td>
+				</tr></table>';
+			$out .= "</td></tr>" .
+			Xml::closeElement( 'table' ) .
+			Xml::closeElement( 'fieldset' ) .
+			"</td></tr>";
+		}
+		# Give extensions a chance to add items to the form
+		Hooks::run( 'ProtectionForm::buildForm', [ $this->mArticle, &$out ] );
+
+		$out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
+
+		// JavaScript will add another row with a value-chaining checkbox
+		if ( $this->mTitle->exists() ) {
+			$out .= Xml::openElement( 'table', [ 'id' => 'mw-protect-table2' ] ) .
+				Xml::openElement( 'tbody' );
+			$out .= '<tr>
+					<td></td>
+					<td class="mw-input">' .
+						Xml::checkLabel(
+							$context->msg( 'protect-cascade' )->text(),
+							'mwProtect-cascade',
+							'mwProtect-cascade',
+							$this->mCascade, $this->disabledAttrib
+						) .
+					"</td>
+				</tr>\n";
+			$out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
+		}
+
+		# Add manual and custom reason field/selects as well as submit
+		if ( !$this->disabled ) {
+			$mProtectreasonother = Xml::label(
+				$context->msg( 'protectcomment' )->text(),
+				'wpProtectReasonSelection'
+			);
+
+			$mProtectreason = Xml::label(
+				$context->msg( 'protect-otherreason' )->text(),
+				'mwProtect-reason'
+			);
+
+			$reasonDropDown = Xml::listDropDown( 'wpProtectReasonSelection',
+				wfMessage( 'protect-dropdown' )->inContentLanguage()->text(),
+				wfMessage( 'protect-otherreason-op' )->inContentLanguage()->text(),
+				$this->mReasonSelection,
+				'mwProtect-reason', 4 );
+
+			// HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
+			// (e.g. emojis) count for two each. This limit is overridden in JS to instead count
+			// Unicode codepoints (or 180 UTF-8 bytes for old schema).
+			// Subtract arbitrary 75 to leave some space for the autogenerated null edit's summary
+			// and other texts chosen by dropdown menus on this page.
+			$maxlength = $oldCommentSchema ? 180 : CommentStore::COMMENT_CHARACTER_LIMIT - 75;
+
+			$out .= Xml::openElement( 'table', [ 'id' => 'mw-protect-table3' ] ) .
+				Xml::openElement( 'tbody' );
+			$out .= "
+				<tr>
+					<td class='mw-label'>
+						{$mProtectreasonother}
+					</td>
+					<td class='mw-input'>
+						{$reasonDropDown}
+					</td>
+				</tr>
+				<tr>
+					<td class='mw-label'>
+						{$mProtectreason}
+					</td>
+					<td class='mw-input'>" .
+						Xml::input( 'mwProtect-reason', 60, $this->mReason, [ 'type' => 'text',
+							'id' => 'mwProtect-reason', 'maxlength' => $maxlength ] ) .
+					"</td>
+				</tr>";
+			# Disallow watching is user is not logged in
+			if ( $user->isLoggedIn() ) {
+				$out .= "
+				<tr>
+					<td></td>
+					<td class='mw-input'>" .
+						Xml::checkLabel( $context->msg( 'watchthis' )->text(),
+							'mwProtectWatch', 'mwProtectWatch',
+							$user->isWatched( $this->mTitle ) || $user->getOption( 'watchdefault' ) ) .
+					"</td>
+				</tr>";
+			}
+			$out .= "
+				<tr>
+					<td></td>
+					<td class='mw-submit'>" .
+						Xml::submitButton(
+							$context->msg( 'confirm' )->text(),
+							[ 'id' => 'mw-Protect-submit' ]
+						) .
+					"</td>
+				</tr>\n";
+			$out .= Xml::closeElement( 'tbody' ) . Xml::closeElement( 'table' );
+		}
+		$out .= Xml::closeElement( 'fieldset' );
+
+		if ( $user->isAllowed( 'editinterface' ) ) {
+			$linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
+			$link = $linkRenderer->makeKnownLink(
+				$context->msg( 'protect-dropdown' )->inContentLanguage()->getTitle(),
+				$context->msg( 'protect-edit-reasonlist' )->text(),
+				[],
+				[ 'action' => 'edit' ]
+			);
+			$out .= '<p class="mw-protect-editreasons">' . $link . '</p>';
+		}
+
+		if ( !$this->disabled ) {
+			$out .= Html::hidden(
+				'wpEditToken',
+				$user->getEditToken( [ 'protect', $this->mTitle->getPrefixedDBkey() ] )
+			);
+			$out .= Xml::closeElement( 'form' );
+		}
+
+		return $out;
+	}
+
+	/**
+	 * Build protection level selector
+	 *
+	 * @param string $action Action to protect
+	 * @param string $selected Current protection level
+	 * @return string HTML fragment
+	 */
+	function buildSelector( $action, $selected ) {
+		// If the form is disabled, display all relevant levels. Otherwise,
+		// just show the ones this user can use.
+		$levels = MWNamespace::getRestrictionLevels( $this->mTitle->getNamespace(),
+			$this->disabled ? null : $this->mContext->getUser()
+		);
+
+		$id = 'mwProtect-level-' . $action;
+
+		$select = new XmlSelect( $id, $id, $selected );
+		$select->setAttribute( 'size', count( $levels ) );
+		if ( $this->disabled ) {
+			$select->setAttribute( 'disabled', 'disabled' );
+		}
+
+		foreach ( $levels as $key ) {
+			$select->addOption( $this->getOptionLabel( $key ), $key );
+		}
+
+		return $select->getHTML();
+	}
+
+	/**
+	 * Prepare the label for a protection selector option
+	 *
+	 * @param string $permission Permission required
+	 * @return string
+	 */
+	private function getOptionLabel( $permission ) {
+		if ( $permission == '' ) {
+			return $this->mContext->msg( 'protect-default' )->text();
+		} else {
+			// Messages: protect-level-autoconfirmed, protect-level-sysop
+			$msg = $this->mContext->msg( "protect-level-{$permission}" );
+			if ( $msg->exists() ) {
+				return $msg->text();
+			}
+			return $this->mContext->msg( 'protect-fallback', $permission )->text();
+		}
+	}
+
+	/**
+	 * Show protection long extracts for this page
+	 *
+	 * @param OutputPage &$out
+	 * @access private
+	 */
+	function showLogExtract( &$out ) {
+		# Show relevant lines from the protection log:
+		$protectLogPage = new LogPage( 'protect' );
+		$out->addHTML( Xml::element( 'h2', null, $protectLogPage->getName()->text() ) );
+		LogEventsList::showLogExtract( $out, 'protect', $this->mTitle );
+		# Let extensions add other relevant log extracts
+		Hooks::run( 'ProtectionForm::showLogExtract', [ $this->mArticle, $out ] );
+	}
+}