From 454b199537b53bf1851afe8d38c9c0a817a6a310 Mon Sep 17 00:00:00 2001
From: Reedy <reedy@wikimedia.org>
Date: Mon, 20 Mar 2017 17:54:40 +0000
Subject: [PATCH] Disable filter by redirect Special:AllPages and
 query=allpages in miser mode

Bug: T160916
Change-Id: Ib9562b404731e1f621b9f07c33821d04cd2aa6ae
---
 RELEASE-NOTES-1.29                    |  4 +++
 includes/api/ApiQueryAllPages.php     | 36 +++++++++++++++++++++++----
 includes/specials/SpecialAllPages.php | 12 ++++++++-
 3 files changed, 46 insertions(+), 6 deletions(-)

diff --git a/RELEASE-NOTES-1.29 b/RELEASE-NOTES-1.29
index 0c483e9974..b9a93f1585 100644
--- a/RELEASE-NOTES-1.29
+++ b/RELEASE-NOTES-1.29
@@ -80,6 +80,7 @@ production.
 * (T27187) Search suggestions based on jquery.suggestions will now correctly only
   highlight prefix matches in the results.
 * (T157035) "new mw.Uri()" was ignoring options when using default URI.
+* Special:Allpages can no longer be filtered by redirect in miser mode.
 
 === Action API changes in 1.29 ===
 * Submitting sensitive authentication request parameters to action=login,
@@ -114,6 +115,9 @@ production.
 * action=purge now requires a POST.
 * There is a new `languagevariants` siprop for action=query&meta=siteinfo,
   which returns a list of languages with active LanguageConverter instances.
+* action=query&query=allpages will no longer filter redirects using a database
+  query in miser mode. This may result in less results being returned than were
+  requested.
 
 === Action API internal changes in 1.29 ===
 * New methods were added to ApiBase to handle errors and warnings using i18n
diff --git a/includes/api/ApiQueryAllPages.php b/includes/api/ApiQueryAllPages.php
index 7460bd5377..6b959ae774 100644
--- a/includes/api/ApiQueryAllPages.php
+++ b/includes/api/ApiQueryAllPages.php
@@ -76,10 +76,13 @@ class ApiQueryAllPages extends ApiQueryGeneratorBase {
 			$this->addWhere( "page_title $op= $cont_from" );
 		}
 
-		if ( $params['filterredir'] == 'redirects' ) {
-			$this->addWhereFld( 'page_is_redirect', 1 );
-		} elseif ( $params['filterredir'] == 'nonredirects' ) {
-			$this->addWhereFld( 'page_is_redirect', 0 );
+		$miserMode = $this->getConfig()->get( 'MiserMode' );
+		if ( !$miserMode ) {
+			if ( $params['filterredir'] == 'redirects' ) {
+				$this->addWhereFld( 'page_is_redirect', 1 );
+			} elseif ( $params['filterredir'] == 'nonredirects' ) {
+				$this->addWhereFld( 'page_is_redirect', 0 );
+			}
 		}
 
 		$this->addWhereFld( 'page_namespace', $params['namespace'] );
@@ -108,6 +111,18 @@ class ApiQueryAllPages extends ApiQueryGeneratorBase {
 			$selectFields = $resultPageSet->getPageTableFields();
 		}
 
+		$miserModeFilterRedirValue = null;
+		$miserModeFilterRedir = $miserMode && $params['filterredir'] !== 'all';
+		if ( $miserModeFilterRedir ) {
+			$selectFields[] = 'page_is_redirect';
+
+			if ( $params['filterredir'] == 'redirects' ) {
+				$miserModeFilterRedirValue = 1;
+			} elseif ( $params['filterredir'] == 'nonredirects' ) {
+				$miserModeFilterRedirValue = 0;
+			}
+		}
+
 		$this->addFields( $selectFields );
 		$forceNameTitleIndex = true;
 		if ( isset( $params['minsize'] ) ) {
@@ -219,6 +234,11 @@ class ApiQueryAllPages extends ApiQueryGeneratorBase {
 				break;
 			}
 
+			if ( $miserModeFilterRedir && (int)$row->page_is_redirect !== $miserModeFilterRedirValue ) {
+				// Filter implemented in PHP due to being in Miser Mode
+				continue;
+			}
+
 			if ( is_null( $resultPageSet ) ) {
 				$title = Title::makeTitle( $row->page_namespace, $row->page_title );
 				$vals = [
@@ -242,7 +262,7 @@ class ApiQueryAllPages extends ApiQueryGeneratorBase {
 	}
 
 	public function getAllowedParams() {
-		return [
+		$ret = [
 			'from' => null,
 			'continue' => [
 				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
@@ -314,6 +334,12 @@ class ApiQueryAllPages extends ApiQueryGeneratorBase {
 				ApiBase::PARAM_DFLT => 'all'
 			],
 		];
+
+		if ( $this->getConfig()->get( 'MiserMode' ) ) {
+			$ret['filterredir'][ApiBase::PARAM_HELP_MSG_APPEND] = [ 'api-help-param-limited-in-miser-mode' ];
+		}
+
+		return $ret;
 	}
 
 	protected function getExamplesMessages() {
diff --git a/includes/specials/SpecialAllPages.php b/includes/specials/SpecialAllPages.php
index 4b8446a795..fd7bc3f5c4 100644
--- a/includes/specials/SpecialAllPages.php
+++ b/includes/specials/SpecialAllPages.php
@@ -69,7 +69,11 @@ class SpecialAllPages extends IncludableSpecialPage {
 		$from = $request->getVal( 'from', null );
 		$to = $request->getVal( 'to', null );
 		$namespace = $request->getInt( 'namespace' );
-		$hideredirects = $request->getBool( 'hideredirects', false );
+
+		$miserMode = (bool)$this->getConfig()->get( 'MiserMode' );
+
+		// Redirects filter is disabled in MiserMode
+		$hideredirects = $request->getBool( 'hideredirects', false ) && !$miserMode;
 
 		$namespaces = $this->getLanguage()->getNamespaces();
 
@@ -100,6 +104,7 @@ class SpecialAllPages extends IncludableSpecialPage {
 	protected function outputHTMLForm( $namespace = NS_MAIN,
 		$from = '', $to = '', $hideRedirects = false
 	) {
+		$miserMode = (bool)$this->getConfig()->get( 'MiserMode' );
 		$fields = [
 			'from' => [
 				'type' => 'text',
@@ -133,6 +138,11 @@ class SpecialAllPages extends IncludableSpecialPage {
 				'value' => $hideRedirects,
 			],
 		];
+
+		if ( $miserMode ) {
+			unset ( $fields['hideredirects'] );
+		}
+
 		$form = HTMLForm::factory( 'table', $fields, $this->getContext() );
 		$form->setMethod( 'get' )
 			->setWrapperLegendMsg( 'allpages' )
-- 
2.20.1