From e55bebac25befdd88259d482d37b3cbffda29b9d Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@boren.nu>
Date: Tue, 27 Nov 2012 00:20:27 +0000
Subject: [PATCH] Show a better message ondmins on link-manager.php,
 link-add.php, link.php  when links are disabled.

Props nacin
fixes #22569


git-svn-id: http://core.svn.wordpress.org/trunk@22855 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/bookmark.php | 22 ++++++++++++++++++++++
 wp-admin/link.php              |  2 +-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/wp-admin/includes/bookmark.php b/wp-admin/includes/bookmark.php
index 17a8229aa6..4d240b775c 100644
--- a/wp-admin/includes/bookmark.php
+++ b/wp-admin/includes/bookmark.php
@@ -266,3 +266,25 @@ function wp_update_link( $linkdata ) {
 
 	return wp_insert_link( $linkdata );
 }
+
+/**
+ * @since 3.5.0
+ * @access private
+ */
+function wp_link_manager_disabled_message() {
+	global $pagenow;
+	if ( 'link-manager.php' != $pagenow && 'link-add.php' != $pagenow && 'link.php' != $pagenow )
+		return;
+
+	add_filter( 'pre_option_link_manager_enabled', '__return_true', 100 );
+	$really_can_manage_links = current_user_can( 'manage_links' );
+	remove_filter( 'pre_option_link_manager_enabled', '__return_true', 100 );
+
+	if ( $really_can_manage_links && current_user_can( 'install_plugins' ) ) {
+		$link = network_admin_url( 'plugin-install.php?tab=search&amp;s=Link+Manager' );
+		wp_die( sprintf( __( 'If you are looking to use the link manager, please install the <a href="%s">Link Manager</a> plugin.' ), $link ) );
+	}
+
+	wp_die( __( 'You do not have sufficient permissions to edit the links for this site.' ) );
+}
+add_action( 'admin_page_access_denied', 'wp_link_manager_disabled_message' );
diff --git a/wp-admin/link.php b/wp-admin/link.php
index 9e2d6a86a6..d12d229ed8 100644
--- a/wp-admin/link.php
+++ b/wp-admin/link.php
@@ -15,7 +15,7 @@ require_once ('admin.php');
 wp_reset_vars(array('action', 'cat_id', 'linkurl', 'name', 'image', 'description', 'visible', 'target', 'category', 'link_id', 'submit', 'order_by', 'links_show_cat_id', 'rating', 'rel', 'notes', 'linkcheck[]'));
 
 if ( ! current_user_can('manage_links') )
-	wp_die( __('You do not have sufficient permissions to edit the links for this site.') );
+	wp_link_manager_disabled_message();
 
 if ( !empty($_POST['deletebookmarks']) )
 	$action = 'deletebookmarks';