From 56bff936e759d85cd6de765b1f4cf4f485497ab8 Mon Sep 17 00:00:00 2001
From: Manuel Munz <freifunk@somakoma.de>
Date: Fri, 17 Dec 2010 03:35:17 +0000
Subject: [PATCH] modules/freifunk: Fix a problem that happened when ipv6 was
 not enabled by adding checks

---
 .../luasrc/controller/freifunk/freifunk.lua        | 30 ++++---
 .../luasrc/view/freifunk/public_status.htm         | 93 ++++++++++++----------
 2 files changed, 70 insertions(+), 53 deletions(-)

diff --git a/modules/freifunk/luasrc/controller/freifunk/freifunk.lua b/modules/freifunk/luasrc/controller/freifunk/freifunk.lua
index f4f9b97c0..db4e00c1e 100644
--- a/modules/freifunk/luasrc/controller/freifunk/freifunk.lua
+++ b/modules/freifunk/luasrc/controller/freifunk/freifunk.lua
@@ -256,23 +256,33 @@ function public_status_json()
 	membuffers / 1024,
 	tostring(i18n.translate("buffered"))
 	)
-	
+
 	local dr4 = sys.net.defaultroute()
 	local dr6 = sys.net.defaultroute6()
-
+	
+	if dr6 then
+		def6 = { 
+		gateway = dr6.nexthop:string(),
+		dest = dr6.dest:string(),
+		dev = dr6.device,
+		metr = dr6.metric }
+	end   
+
+	if dr4 then
+		def4 = { 
+		gateway = dr4.gateway:string(),
+		dest = dr4.dest:string(),
+		dev = dr4.device,
+		metr = dr4.metric }
+	end
+	
 	rv[#rv+1] = {
 		time = os.date("%c"),
 		uptime = twa.date_format(tonumber(sys.uptime())),
 		load = string.format("%.2f, %.2f, %.2f", load1, load5, load15),
 		mem = mem,
-		defroutev4 = {	gateway = dr4.gateway:string(),
-				dest = dr4.dest:string(),
-				dev = dr4.device,
-				metr = dr4.metric },
-		defroutev6 = {	gateway = dr6.nexthop:string(),
-				dest = dr6.dest:string(),
-				dev = dr6.device,
-				metr = dr6.metric }
+		defroutev4 = def4,
+		defroutev6 = def6
 	}
 
 	luci.http.prepare_content("application/json")
diff --git a/modules/freifunk/luasrc/view/freifunk/public_status.htm b/modules/freifunk/luasrc/view/freifunk/public_status.htm
index 5cfc0c72d..94ca2cd21 100644
--- a/modules/freifunk/luasrc/view/freifunk/public_status.htm
+++ b/modules/freifunk/luasrc/view/freifunk/public_status.htm
@@ -133,59 +133,66 @@ local defroutev6 = sys.net.defaultroute6 ()
 					u.innerHTML = st[i].mem;
 					}
 
-					var u = document.getElementById('v4dst');
-					if (u)
-					{
-					u.innerHTML = st[i].defroutev4.dest;
-					}
-
-					var u = document.getElementById('v4gw');
-					if (u)
-					{
-					u.innerHTML = st[i].defroutev4.gateway;
-					}
-
-					var u = document.getElementById('v4dev');
-					if (u)
-					{
-					u.innerHTML = st[i].defroutev4.dev;
-					}
-
-					var u = document.getElementById('v4metr');
-					if (u)
-					{
-					u.innerHTML = st[i].defroutev4.metr;
-					}
-
-					var u = document.getElementById('v6dst');
-					if (u)
-					{
-					u.innerHTML = st[i].defroutev6.dest;
-					}
-
-					var u = document.getElementById('v6gw');
+					var u = document.getElementById('dyntime');
 					if (u)
 					{
-					u.innerHTML = st[i].defroutev6.gateway;
+					u.innerHTML = st[i].time;
 					}
 
-					var u = document.getElementById('v6dev');
-					if (u)
+					if (st[i].defroutev4)
 					{
-					u.innerHTML = st[i].defroutev6.dev;
+						var u = document.getElementById('v4dst');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev4.dest;
+						}
+
+						var u = document.getElementById('v4gw');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev4.gateway;
+						}
+
+						var u = document.getElementById('v4dev');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev4.dev;
+						}
+
+						var u = document.getElementById('v4metr');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev4.metr;
+						}
 					}
 
-					var u = document.getElementById('v6metr');
-					if (u)
+					if (st[i].defroutev6)
 					{
-					u.innerHTML = st[i].defroutev6.metr;
+						var u = document.getElementById('v6dst');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev6.dest;
+						}
+
+						var u = document.getElementById('v6gw');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev6.gateway;
+						}
+
+						var u = document.getElementById('v6dev');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev6.dev;
+						}
+
+						var u = document.getElementById('v6metr');
+						if (u)
+						{
+						u.innerHTML = st[i].defroutev6.metr;
+						}
 					}
 
-					var u = document.getElementById('dyntime');
-					if (u)
-					{
-					u.innerHTML = st[i].time;
-					}
 				}
 				window.setTimeout(update_wifi_status, <%=interval%>);
 			}
-- 
2.11.0