From 956d275693c451c4d9ba60751704b80257f37433 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Sun, 22 Sep 2013 22:52:48 -0700
Subject: fixes for display and search privacy enforcement

---
 include/security.php | 46 ++++++++++++++++++++++++++++++++++++----------
 1 file changed, 36 insertions(+), 10 deletions(-)

(limited to 'include')

diff --git a/include/security.php b/include/security.php
index 4738e473b..632b8d607 100644
--- a/include/security.php
+++ b/include/security.php
@@ -302,16 +302,19 @@ function public_permissions_sql($observer_hash) {
 		foreach($groups as $g)
 			$gs .= '|<' . $g . '>';
 	} 
-	$sql = sprintf(
-		" OR (( NOT (deny_cid like '%s' OR deny_gid REGEXP '%s')
-		  AND ( allow_cid like '%s' OR allow_gid REGEXP '%s' OR ( allow_cid = '' AND allow_gid = '') )
-		  ))
-		",
-		dbesc(protect_sprintf( '%<' . $observer_hash . '>%')),
-		dbesc($gs),
-		dbesc(protect_sprintf( '%<' . $observer_hash . '>%')),
-		dbesc($gs)
-	);
+	$sql = '';
+	if($observer_hash) {
+		$sql = sprintf(
+			" OR (( NOT (deny_cid like '%s' OR deny_gid REGEXP '%s')
+			  AND ( allow_cid like '%s' OR allow_gid REGEXP '%s' OR ( allow_cid = '' AND allow_gid = '') )
+			  ))
+			",
+			dbesc(protect_sprintf( '%<' . $observer_hash . '>%')),
+			dbesc($gs),
+			dbesc(protect_sprintf( '%<' . $observer_hash . '>%')),
+			dbesc($gs)
+		);
+	}
 
 	return $sql;
 }
@@ -424,6 +427,29 @@ function stream_perms_api_uids($perms_min = PERMS_SITE) {
 				$str .= ',';
 			$str .= intval($rr); 
 		}
+logger('stream_perms_api_uids: ' . $str);
 	return $str;
 }
 
+function stream_perms_xchans($perms_min = PERMS_SITE) {
+	$ret = array();
+	if(local_user())
+		$ret[] = get_observer_hash();
+	$r = q("select channel_hash from channel where channel_r_stream <= %d",
+		intval($perms_min)
+	);
+	if($r)
+		foreach($r as $rr)
+			if(! in_array($rr['channel_hash'],$ret))
+				$ret[] = $rr['channel_hash']; 
+
+	$str = '';
+	if($ret)
+		foreach($ret as $rr) {
+			if($str)
+				$str .= ',';
+			$str .= "'" . dbesc($rr) . "'"; 
+		}
+logger('stream_perms_xchans: ' . $str);
+	return $str;
+}
-- 
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