From 5a30eadb0eff3bdc90229d13909af8d84a65c1ed Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@users.mediawiki.org>
Date: Mon, 5 Dec 2005 05:37:10 +0000
Subject: [PATCH] * Add createpage and createtalk permission keys, allowing a
 quick   switch to disable page creation for anonymous users. Jimmy requested
 we have this ability available.

---
 RELEASE-NOTES                |  2 ++
 includes/DefaultSettings.php |  4 ++++
 includes/EditPage.php        | 19 +++++++++++++++++++
 includes/Title.php           |  7 +++++++
 languages/Language.php       |  3 +++
 5 files changed, 35 insertions(+)

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index b13845e0a2..843c5eb9be 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -292,6 +292,8 @@ fully support the editing toolbar, but was found to be too confusing.
 * (bug 4162) Add $wgThumbnailEpoch timestamp to force old thumbs to
   be rerendered on demand, sitewide
 * (bug 4165) Correct validation for user language selection (data taint)
+* Add createpage and createtalk permission keys, allowing a quick
+  switch to disable page creation for anonymous users.
 
 
 === Caveats ===
diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index f4e602770c..35483d47a5 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -771,10 +771,14 @@ $wgGroupPermissions = array();
 $wgGroupPermissions['*'    ]['createaccount']   = true;
 $wgGroupPermissions['*'    ]['read']            = true;
 $wgGroupPermissions['*'    ]['edit']            = true;
+$wgGroupPermissions['*'    ]['createpage']      = true;
+$wgGroupPermissions['*'    ]['createtalk']      = true;
 
 $wgGroupPermissions['user' ]['move']            = true;
 $wgGroupPermissions['user' ]['read']            = true;
 $wgGroupPermissions['user' ]['edit']            = true;
+$wgGroupPermissions['user' ]['createpage']      = true;
+$wgGroupPermissions['user' ]['createtalk']      = true;
 $wgGroupPermissions['user' ]['upload']          = true;
 $wgGroupPermissions['user' ]['reupload']        = true;
 $wgGroupPermissions['user' ]['reupload-shared'] = true;
diff --git a/includes/EditPage.php b/includes/EditPage.php
index 8c73af6ea9..d6d714d794 100644
--- a/includes/EditPage.php
+++ b/includes/EditPage.php
@@ -202,6 +202,12 @@ class EditPage {
 				return;
 			}
 		}
+		if ( !$this->mTitle->userCan( 'create' ) && !$this->mTitle->exists() ) {
+			wfDebug( "$fname: no create permission\n" );
+			$this->noCreatePermission();
+			wfProfileOut( $fname );
+			return;
+		}
 		if ( wfReadOnly() ) {
 			wfDebug( "$fname: read-only mode is engaged\n" );
 			if( $this->save || $this->preview ) {
@@ -513,6 +519,14 @@ class EditPage {
 		# If article is new, insert it.
 		$aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 		if ( 0 == $aid ) {
+			// Late check for create permission, just in case *PARANOIA*
+			if ( !$this->mTitle->userCan( 'create' ) ) {
+				wfDebug( "$fname: no create permission\n" );
+				$this->noCreatePermission();
+				wfProfileOut( $fname );
+				return;
+			}
+			
 			# Don't save a new article if it's blank.
 			if ( ( '' == $this->textbox1 ) ) {
 					$wgOut->redirect( $this->mTitle->getFullURL() );
@@ -1527,6 +1541,11 @@ END
 		return strtr( $result, array( "&#x0" => "&#x" ) );
 	}
 	
+	function noCreatePermission() {
+		global $wgOut;
+		$wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
+		$wgOut->addWikiText( wfMsg( 'nocreatetext' ) );
+	}
 
 }
 
diff --git a/includes/Title.php b/includes/Title.php
index 433187e1d4..0d5d1c7414 100644
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -906,6 +906,13 @@ class Title {
 			wfProfileOut( $fname );
 			return false;
 		}
+		
+		if( $action == 'create' ) {
+			if( (  $this->isTalkPage() && !$wgUser->isAllowed( 'createtalk' ) ) ||
+				( !$this->isTalkPage() && !$wgUser->isAllowed( 'createpage' ) ) ) {
+				return false;
+			}
+		}
 
 		wfProfileOut( $fname );
 		return true;
diff --git a/languages/Language.php b/languages/Language.php
index 743b744ae0..e5ab125c6b 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -785,6 +785,9 @@ the text into a text file and save it for later.</strong>',
 'protectedpagewarning' => "<strong>WARNING:  This page has been locked so that only users with sysop privileges can edit it. Be sure you are following the [[Project:Protected_page_guidelines|protected page guidelines]].</strong>",
 'templatesused'	=> 'Templates used on this page:',
 'edittools' => '<!-- Text here will be shown below edit and upload forms. -->',
+'nocreatetitle' => 'Page creation limited',
+'nocreatetext' => 'This site has restricted the ability to create new pages.
+You can go back and edit an existing page, or [[Special:Userlogin|log in or create an account]].',
 
 # History pages
 #
-- 
2.20.1