luci-base: Show multiple upstream interface

Several devices have multiple upstream interfaces, for example a fixed
and a mobile broadband connection. Currently, only one upstream
interface is shown per address family in Luci. So in my example, one of
the interfaces would not appear on the Status-page.

This PR introduces support for showing multiple upstream interfaces on
the Status-page. The code is not very complicated. get_status_by_route()
has been extended to return a list of all routes, and
get_wannet()/get_wan6net() now returns all upstream interfaces.

I could not find any other (active) users of these three functions than
calls triggered from the Status-page, so changing the default behavior
should be fine. get_wandev()/get_wan6dev() called get_status_by_route(),
but I could not find any place where those functions were called. I
removed the dev-functions instead of keeping the old
get_status_by_route().

On the status page, the wan/wan6-variables have been replaced with
arrays. When populating the html, we now iterate through these arrays
and create one element for each interface.

I have tested the code with different interface types, v4, v6, as well as
disconnecting and connecting interfaces. The status is updated and the
correct interfaces (or sometimes none at all) are shown.

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>

2 files changed, 122 insertions, 90 deletions

diff --git a/modules/luci-base/luasrc/model/network.lua b/modules/luci-base/luasrc/model/network.lua
index cce559aab..7f7397032 100644
--- a/modules/luci-base/luasrc/model/network.lua
+++ b/modules/luci-base/luasrc/model/network.lua
@@ -813,6 +813,7 @@ function del_wifinet(self, net)
 end
 
 function get_status_by_route(self, addr, mask)
+	local route_statuses = { }
 	local _, object
 	for _, object in ipairs(utl.ubus()) do
 		local net = object:match("^network%.interface%.(.+)")
@@ -822,12 +823,14 @@ function get_status_by_route(self, addr, mask)
 				local rt
 				for _, rt in ipairs(s.route) do
 					if not rt.table and rt.target == addr and rt.mask == mask then
-						return net, s
+						route_statuses[net] = s
 					end
 				end
 			end
 		end
 	end
+
+	return route_statuses
 end
 
 function get_status_by_address(self, addr)
@@ -856,24 +859,28 @@ function get_status_by_address(self, addr)
 	end
 end
 
-function get_wannet(self)
-	local net, stat = self:get_status_by_route("0.0.0.0", 0)
-	return net and network(net, stat.proto)
-end
+function get_wan_networks(self)
+	local k, v
+	local wan_nets = { }
+	local route_statuses = self:get_status_by_route("0.0.0.0", 0)
 
-function get_wandev(self)
-	local _, stat = self:get_status_by_route("0.0.0.0", 0)
-	return stat and interface(stat.l3_device or stat.device)
-end
+	for k, v in pairs(route_statuses) do
+		wan_nets[#wan_nets+1] = network(k, v.proto)
+	end
 
-function get_wan6net(self)
-	local net, stat = self:get_status_by_route("::", 0)
-	return net and network(net, stat.proto)
+	return wan_nets
 end
 
-function get_wan6dev(self)
-	local _, stat = self:get_status_by_route("::", 0)
-	return stat and interface(stat.l3_device or stat.device)
+function get_wan6_networks(self)
+	local k, v
+	local wan6_nets = { }
+	local route_statuses = self:get_status_by_route("::", 0)
+
+	for k, v in pairs(route_statuses) do
+		wan6_nets[#wan6_nets+1] = network(k, v.proto)
+	end
+
+	return wan6_nets
 end
 
 function get_switch_topologies(self)
diff --git a/modules/luci-mod-admin-full/luasrc/view/admin_status/index.htm b/modules/luci-mod-admin-full/luasrc/view/admin_status/index.htm
index 29a03f255..8820ae1cf 100644
--- a/modules/luci-mod-admin-full/luasrc/view/admin_status/index.htm
+++ b/modules/luci-mod-admin-full/luasrc/view/admin_status/index.htm
@@ -35,8 +35,8 @@
 
 	if luci.http.formvalue("status") == "1" then
 		local ntm = require "luci.model.network".init()
-		local wan = ntm:get_wannet()
-		local wan6 = ntm:get_wan6net()
+		local wan_nets = ntm:get_wan_networks()
+		local wan6_nets = ntm:get_wan6_networks()
 
 		local conn_count = tonumber(
 			fs.readfile("/proc/sys/net/netfilter/nf_conntrack_count") or "") or 0
@@ -56,45 +56,62 @@
 			wifinets   = stat.wifi_networks()
 		}
 
-		if wan then
-			local dev = wan:get_interface()
-			local link = dev and ipc.link(dev:name())
-			rv.wan = {
-				ipaddr  = wan:ipaddr(),
-				gwaddr  = wan:gwaddr(),
-				netmask = wan:netmask(),
-				dns     = wan:dnsaddrs(),
-				expires = wan:expires(),
-				uptime  = wan:uptime(),
-				proto   = wan:proto(),
-				i18n    = wan:get_i18n(),
-				ifname  = wan:ifname(),
-				link    = wan:adminlink(),
-				mac     = dev and dev:mac(),
-				type    = dev and dev:type(),
-				name    = dev and dev:get_i18n(),
-				ether   = link and link.type == 1
-			}
+		if #wan_nets > 0 then
+			local k, v
+
+			rv.wan = { }
+
+			for k, v in pairs(wan_nets) do
+				local dev = v:get_interface()
+				local link = dev and ipc.link(dev:name())
+
+				local wan_info = {
+					ipaddr  = v:ipaddr(),
+					gwaddr  = v:gwaddr(),
+					netmask = v:netmask(),
+					dns     = v:dnsaddrs(),
+					expires = v:expires(),
+					uptime  = v:uptime(),
+					proto   = v:proto(),
+					i18n    = v:get_i18n(),
+					ifname  = v:ifname(),
+					link    = v:adminlink(),
+					mac     = dev and dev:mac(),
+					type    = dev and dev:type(),
+					name    = dev and dev:get_i18n(),
+					ether   = link and link.type == 1
+				}
+
+				rv.wan[#rv.wan+1] = wan_info
+			end
 		end
 
-		if wan6 then
-			local dev = wan6:get_interface()
-			local link = dev and ipc.link(dev:name())
-			rv.wan6 = {
-				ip6addr   = wan6:ip6addr(),
-				gw6addr   = wan6:gw6addr(),
-				dns       = wan6:dns6addrs(),
-				ip6prefix = wan6:ip6prefix(),
-				uptime    = wan6:uptime(),
-				proto     = wan6:proto(),
-				i18n      = wan6:get_i18n(),
-				ifname    = wan6:ifname(),
-				link      = wan6:adminlink(),
-				mac       = dev and dev:mac(),
-				type      = dev and dev:type(),
-				name      = dev and dev:get_i18n(),
-				ether     = link and link.type == 1
-			}
+		if #wan6_nets > 0 then
+			local k, v
+
+			rv.wan6 = { }
+
+			for k, v in pairs(wan6_nets) do
+				local dev = v:get_interface()
+				local link = dev and ipc.link(dev:name())
+				local wan6_info = {
+					ip6addr   = v:ip6addr(),
+					gw6addr   = v:gw6addr(),
+					dns       = v:dns6addrs(),
+					ip6prefix = v:ip6prefix(),
+					uptime    = v:uptime(),
+					proto     = v:proto(),
+					i18n      = v:get_i18n(),
+					ifname    = v:ifname(),
+					link      = v:adminlink(),
+					mac       = dev and dev:mac(),
+					type      = dev and dev:type(),
+					name      = dev and dev:get_i18n(),
+					ether     = link and link.type == 1
+				}
+
+				rv.wan6[#rv.wan6+1] = wan6_info
+			end
 		end
 
 		if has_dsl then
@@ -177,47 +194,55 @@
 			while (us.lastElementChild)
 				us.removeChild(us.lastElementChild);
 
-			var ifc = info.wan || {};
+			var wan_list = info.wan || [];
+
+			for (var i = 0; i < wan_list.length; i++) {
+				var ifc = wan_list[i];
 
-			us.appendChild(renderBox(
-				'<%:IPv4 Upstream%>',
-				(ifc.ifname && ifc.proto != 'none'),
-				[ E('div', {}, renderBadge(
-					'<%=resource%>/icons/%s.png'.format((ifc && ifc.type) ? ifc.type : 'ethernet_disabled'), null,
+				us.appendChild(renderBox(
+					'<%:IPv4 Upstream%>',
+					(ifc.ifname && ifc.proto != 'none'),
+					[ E('div', {}, renderBadge(
+					'<%=resource%>' + '/icons/%s.png'.format((ifc && ifc.type) ? ifc.type : 'ethernet_disabled'), null,
 					'<%:Device%>', ifc ? (ifc.name || ifc.ifname || '-') : '-',
 					'<%:MAC-Address%>', (ifc && ifc.ether) ? ifc.mac : null)) ],
-				'<%:Protocol%>', ifc.i18n || E('em', '<%:Not connected%>'),
-				'<%:Address%>', (ifc.ipaddr) ? ifc.ipaddr : '0.0.0.0',
-				'<%:Netmask%>', (ifc.netmask && ifc.netmask != ifc.ipaddr) ? ifc.netmask : '255.255.255.255',
-				'<%:Gateway%>', (ifc.gwaddr) ? ifc.gwaddr : '0.0.0.0',
-				'<%:DNS%> 1', (ifc.dns) ? ifc.dns[0] : null,
-				'<%:DNS%> 2', (ifc.dns) ? ifc.dns[1] : null,
-				'<%:DNS%> 3', (ifc.dns) ? ifc.dns[2] : null,
-				'<%:DNS%> 4', (ifc.dns) ? ifc.dns[3] : null,
-				'<%:DNS%> 5', (ifc.dns) ? ifc.dns[4] : null,
-				'<%:Expires%>', (ifc.expires > -1) ? '%t'.format(ifc.expires) : null,
-				'<%:Connected%>', (ifc.uptime > 0) ? '%t'.format(ifc.uptime) : null));
+					'<%:Protocol%>', ifc.i18n || E('em', '<%:Not connected%>'),
+					'<%:Address%>', (ifc.ipaddr) ? ifc.ipaddr : '0.0.0.0',
+					'<%:Netmask%>', (ifc.netmask && ifc.netmask != ifc.ipaddr) ? ifc.netmask : '255.255.255.255',
+					'<%:Gateway%>', (ifc.gwaddr) ? ifc.gwaddr : '0.0.0.0',
+					'<%:DNS%> 1', (ifc.dns) ? ifc.dns[0] : null,
+					'<%:DNS%> 2', (ifc.dns) ? ifc.dns[1] : null,
+					'<%:DNS%> 3', (ifc.dns) ? ifc.dns[2] : null,
+					'<%:DNS%> 4', (ifc.dns) ? ifc.dns[3] : null,
+					'<%:DNS%> 5', (ifc.dns) ? ifc.dns[4] : null,
+					'<%:Expires%>', (ifc.expires > -1) ? '%t'.format(ifc.expires) : null,
+					'<%:Connected%>', (ifc.uptime > 0) ? '%t'.format(ifc.uptime) : null));
+			}
 
 			<% if has_ipv6 then %>
-			var ifc6 = info.wan6 || {};
-
-			us.appendChild(renderBox(
-				'<%:IPv6 Upstream%>',
-				(ifc6.ifname && ifc6.proto != 'none'),
-				[ E('div', {}, renderBadge(
-					'<%=resource%>/icons/%s.png'.format(ifc6.type || 'ethernet_disabled'), null,
-					'<%:Device%>', ifc6 ? (ifc6.name || ifc6.ifname || '-') : '-',
-					'<%:MAC-Address%>', (ifc6 && ifc6.ether) ? ifc6.mac : null)) ],
-				'<%:Protocol%>', ifc6.i18n ? (ifc6.i18n + (ifc6.proto === 'dhcp' && ifc6.ip6prefix ? '-PD' : '')) : E('em', '<%:Not connected%>'),
-				'<%:Prefix Delegated%>', ifc6.ip6prefix,
-				'<%:Address%>', (ifc6.ip6prefix) ? (ifc6.ip6addr || null) : (ifc6.ipaddr || '::'),
-				'<%:Gateway%>', (ifc6.gw6addr) ? ifc6.gw6addr : '::',
-				'<%:DNS%> 1', (ifc6.dns) ? ifc6.dns[0] : null,
-				'<%:DNS%> 2', (ifc6.dns) ? ifc6.dns[1] : null,
-				'<%:DNS%> 3', (ifc6.dns) ? ifc6.dns[2] : null,
-				'<%:DNS%> 4', (ifc6.dns) ? ifc6.dns[3] : null,
-				'<%:DNS%> 5', (ifc6.dns) ? ifc6.dns[4] : null,
-				'<%:Connected%>', (ifc6.uptime > 0) ? '%t'.format(ifc6.uptime) : null));
+			var wan6_list = info.wan6 || [];
+
+			for (var i = 0; i < wan6_list.length; i++) {
+				var ifc6 = wan6_list[i];
+
+				us.appendChild(renderBox(
+					'<%:IPv6 Upstream%>',
+					(ifc6.ifname && ifc6.proto != 'none'),
+					[ E('div', {}, renderBadge(
+						'<%=resource%>/icons/%s.png'.format(ifc6.type || 'ethernet_disabled'), null,
+						'<%:Device%>', ifc6 ? (ifc6.name || ifc6.ifname || '-') : '-',
+						'<%:MAC-Address%>', (ifc6 && ifc6.ether) ? ifc6.mac : null)) ],
+					'<%:Protocol%>', ifc6.i18n ? (ifc6.i18n + (ifc6.proto === 'dhcp' && ifc6.ip6prefix ? '-PD' : '')) : E('em', '<%:Not connected%>'),
+					'<%:Prefix Delegated%>', ifc6.ip6prefix,
+					'<%:Address%>', (ifc6.ip6prefix) ? (ifc6.ip6addr || null) : (ifc6.ipaddr || '::'),
+					'<%:Gateway%>', (ifc6.gw6addr) ? ifc6.gw6addr : '::',
+					'<%:DNS%> 1', (ifc6.dns) ? ifc6.dns[0] : null,
+					'<%:DNS%> 2', (ifc6.dns) ? ifc6.dns[1] : null,
+					'<%:DNS%> 3', (ifc6.dns) ? ifc6.dns[2] : null,
+					'<%:DNS%> 4', (ifc6.dns) ? ifc6.dns[3] : null,
+					'<%:DNS%> 5', (ifc6.dns) ? ifc6.dns[4] : null,
+					'<%:Connected%>', (ifc6.uptime > 0) ? '%t'.format(ifc6.uptime) : null));
+			}
 			<% end %>
 
 			<% if has_dsl then %>