From fe2d10ea5cd58fee666e6de61b7908f5b5cf2cf7 Mon Sep 17 00:00:00 2001
From: Gary Pendergast <gary@pento.net>
Date: Wed, 22 Jul 2015 04:06:28 +0000
Subject: [PATCH] Capabilities: When creating an auto-draft, ensure that the
 current user still has permission to do so.

Merge of [33357] to the 4.2 branch.


Built from https://develop.svn.wordpress.org/branches/4.2@33358


git-svn-id: http://core.svn.wordpress.org/branches/4.2@33330 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/dashboard.php | 4 ++++
 wp-admin/post.php               | 5 +++--
 wp-includes/capabilities.php    | 4 +++-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/wp-admin/includes/dashboard.php b/wp-admin/includes/dashboard.php
index 7179aa3480..b7dda1323d 100644
--- a/wp-admin/includes/dashboard.php
+++ b/wp-admin/includes/dashboard.php
@@ -418,6 +418,10 @@ function wp_network_dashboard_right_now() {
 function wp_dashboard_quick_press( $error_msg = false ) {
 	global $post_ID;
 
+	if ( ! current_user_can( 'edit_posts' ) ) {
+		return;
+	}
+
 	/* Check if a new auto-draft (= no new post_ID) is needed or if the old can be used */
 	$last_post_id = (int) get_user_option( 'dashboard_quick_press_last_post_id' ); // Get the last post_ID
 	if ( $last_post_id ) {
diff --git a/wp-admin/post.php b/wp-admin/post.php
index 0c38b5631e..52f1bda297 100644
--- a/wp-admin/post.php
+++ b/wp-admin/post.php
@@ -115,8 +115,9 @@ case 'post-quickdraft-save':
 	if ( ! wp_verify_nonce( $nonce, 'add-post' ) )
 		$error_msg = __( 'Unable to submit this form, please refresh and try again.' );
 
-	if ( ! current_user_can( 'edit_posts' ) )
-		$error_msg = __( 'Oops, you don&#8217;t have access to add new drafts.' );
+	if ( ! current_user_can( 'edit_posts' ) ) {
+		exit;
+	}
 
 	if ( $error_msg )
 		return wp_dashboard_quick_press( $error_msg );
diff --git a/wp-includes/capabilities.php b/wp-includes/capabilities.php
index 588432dcfc..8a3d335030 100644
--- a/wp-includes/capabilities.php
+++ b/wp-includes/capabilities.php
@@ -1143,8 +1143,10 @@ function map_meta_cap( $cap, $user_id ) {
 	case 'edit_post':
 	case 'edit_page':
 		$post = get_post( $args[0] );
-		if ( empty( $post ) )
+		if ( empty( $post ) ) {
+			$caps[] = 'do_not_allow';
 			break;
+		}
 
 		if ( 'revision' == $post->post_type ) {
 			$post = get_post( $post->post_parent );