From c2cdd41e8139068426175c9e6c5fe2f771ea7caf Mon Sep 17 00:00:00 2001
From: Mario Vavti <mario@mariovavti.com>
Date: Wed, 9 Mar 2016 10:04:33 +0100
Subject: Issue #316 make /display updates work. Basically copy and paste what
 we do on load and add $simple_update to the query.

---
 mod/display.php | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 48 insertions(+), 3 deletions(-)

(limited to 'mod')

diff --git a/mod/display.php b/mod/display.php
index b2d9ba34b..ac1de17ca 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -116,7 +116,7 @@ function display_content(&$a, $update = 0, $load = false) {
 	$simple_update = (($update) ? " AND item_unseen = 1 " : '');
 		
 	if($update && $_SESSION['loadtime'])
-		$simple_update .= " and item.changed > '" . datetime_convert('UTC','UTC',$_SESSION['loadtime']) . "' ";
+		$simple_update = " AND (( item_unseen = 1 AND item.changed > '" . datetime_convert('UTC','UTC',$_SESSION['loadtime']) . "' )  OR item.changed > '" . datetime_convert('UTC','UTC',$_SESSION['loadtime']) . "' ) ";
 	if($load)
 		$simple_update = '';
 
@@ -217,9 +217,54 @@ function display_content(&$a, $update = 0, $load = false) {
 
 			}
 		}
-		else {
-			$r = array();
+	}
+
+	elseif($update && !$load) {
+		$r = null;
+
+		require_once('include/identity.php');
+		$sys = get_sys_channel();
+		$sysid = $sys['channel_id'];
+
+		if(local_channel()) {
+			$r = q("SELECT * from item
+				WHERE uid = %d
+				and mid = '%s'
+				$item_normal
+				$simple_update
+				limit 1",
+				intval(local_channel()),
+				dbesc($target_item['parent_mid'])
+			);
+			if($r) {
+				$updateable = true;
+			}
 		}
+		if($r === null) {
+			// in case somebody turned off public access to sys channel content using permissions
+			// make that content unsearchable by ensuring the owner_xchan can't match
+			if(! perm_is_allowed($sysid,$observer_hash,'view_stream'))
+				$sysid = 0;
+
+			$r = q("SELECT * from item
+				WHERE mid = '%s'
+				AND (((( `item`.`allow_cid` = ''  AND `item`.`allow_gid` = '' AND `item`.`deny_cid`  = '' 
+				AND `item`.`deny_gid`  = '' AND item_private = 0 ) 
+				and owner_xchan in ( " . stream_perms_xchans(($observer_hash) ? (PERMS_NETWORK|PERMS_PUBLIC) : PERMS_PUBLIC) . " ))
+				OR uid = %d )
+				$sql_extra )
+				$item_normal
+				$simple_update
+				limit 1",
+				dbesc($target_item['parent_mid']),
+				intval($sysid)
+			);
+		}
+		$_SESSION['loadtime'] = datetime_convert();
+	}
+
+	else {
+		$r = array();
 	}
 
 	if($r) {
-- 
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