modules/admin-full: make menus work with no dnsmasq or firewall installed

modules/admin-full/luasrc/model/cbi/admin_network/ifaces.lua

@@ -20,6 +20,9 @@ local fw = require "luci.model.firewall"
 
 arg[1] = arg[1] or ""
 
+local has_dnsmasq  = fs.access("/etc/config/dhcp")
+local has_firewall = fs.access("/etc/config/firewall")
+
 local has_3g     = fs.access("/usr/bin/gcom")
 local has_pptp   = fs.access("/usr/sbin/pptp")
 local has_pppd   = fs.access("/usr/sbin/pppd")
@@ -30,9 +33,12 @@ local has_6in4   = fs.access("/lib/network/6in4.sh")
 local has_6to4   = fs.access("/lib/network/6to4.sh")
 
 m = Map("network", translate("Interfaces") .. " - " .. arg[1]:upper(), translate("On this page you can configure the network interfaces. You can bridge several interfaces by ticking the \"bridge interfaces\" field and enter the names of several network interfaces separated by spaces. You can also use <abbr title=\"Virtual Local Area Network\">VLAN</abbr> notation <samp>INTERFACE.VLANNR</samp> (<abbr title=\"for example\">e.g.</abbr>: <samp>eth0.1</samp>)."))
-m:chain("firewall")
 m:chain("wireless")
 
+if has_firewall then
+	m:chain("firewall")
+end
+
 nw.init(m.uci)
 fw.init(m.uci)
 
@@ -56,7 +62,7 @@ if has_pppd  then s:tab("ppp", translate("PPP Settings")) end
 if has_pppoa then s:tab("atm", translate("ATM Settings")) end
 if has_6in4 or has_6to4 then s:tab("tunnel", translate("Tunnel Settings")) end
 s:tab("physical", translate("Physical Settings"))
-s:tab("firewall", translate("Firewall Settings"))
+if has_firewall then s:tab("firewall", translate("Firewall Settings")) end
 
 st = s:taboption("general", DummyValue, "__status", translate("Status"))
 st.template = "admin_network/iface_status"
@@ -143,8 +149,7 @@ ifname_multi.cfgvalue = ifname_single.cfgvalue
 ifname_multi.write = ifname_single.write
 
 
-local fwd_to, fwd_from
+if has_firewall then
-
 	fwzone = s:taboption("firewall", Value, "_fwzone",
 		translate("Create / Assign firewall-zone"),
 		translate("Choose the firewall zone you want to assign to this interface. Select <em>unspecified</em> to remove the interface from the associated zone or fill out the <em>create</em> field to define a new zone and attach the interface to it."))
@@ -176,6 +181,7 @@ function fwzone.write(self, section, value)
 			zone:add_network(section)
 		end
 	end
+end
 
 ipaddr = s:taboption("general", Value, "ipaddr", translate("<abbr title=\"Internet Protocol Version 4\">IPv4</abbr>-Address"))
 ipaddr.optional = true
@@ -507,6 +513,11 @@ dns.optional = true
 dns.datatype = "ip4addr"
 
 
+--
+-- Display DNS settings if dnsmasq is available
+--
+
+if has_dnsmasq then
 	m2 = Map("dhcp", "", "")
 	function m2.on_parse()
 		local has_section = false
@@ -592,5 +603,6 @@ for i, n in ipairs(s.children) do
 			n:depends("ignore", "")
 		end
 	end
+end
 
 return m, m2

modules/admin-full/luasrc/model/cbi/admin_network/wifi_add.lua

@@ -12,6 +12,7 @@ You may obtain a copy of the License at
 $Id$
 ]]--
 
+local fs   = require "nixio.fs"
 local nw   = require "luci.model.network"
 local fw   = require "luci.model.firewall"
 local uci  = require "luci.model.uci".cursor()
@@ -19,6 +20,8 @@ local http = require "luci.http"
 
 local iw = luci.sys.wifi.getiwinfo(http.formvalue("device"))
 
+local has_firewall = fs.access("/etc/config/firewall")
+
 if not iw then
 	luci.http.redirect(luci.dispatcher.build_url("admin/network/wireless"))
 	return
@@ -89,19 +92,23 @@ newnet = m:field(Value, "_netname_new", translate("Name of the new network"),
 newnet.default = m.hidden.mode == "Ad-Hoc" and "mesh" or "wwan"
 newnet.datatype = "uciname"
 
+if has_firewall then
 	fwzone = m:field(Value, "_fwzone",
 		translate("Create / Assign firewall-zone"),
 		translate("Choose the firewall zone you want to assign to this interface. Select <em>unspecified</em> to remove the interface from the associated zone or fill out the <em>create</em> field to define a new zone and attach the interface to it."))
 
 	fwzone.template = "cbi/firewall_zonelist"
 	fwzone.default = m.hidden.mode == "Ad-Hoc" and "mesh" or "wan"
+end
 
 function newnet.parse(self, section)
 	local net, zone
-	local value = self:formvalue(section)
-	local zval  = fwzone:formvalue(section)
 
+	local value = self:formvalue(section)
 	net = nw:add_network(value, { proto = "dhcp" })
+
+	if has_firewall then
+		local zval  = fwzone:formvalue(section)
 		zone = fw:get_zone(zval)
 
 		if not zone and zval == '-' then
@@ -110,6 +117,7 @@ function newnet.parse(self, section)
 				zone = fw:add_zone(zval)
 			end
 		end
+	end
 
 	if not net then
 		self.error = { [section] = "missing" }
@@ -165,10 +173,12 @@ function newnet.parse(self, section)
 	end
 end
 
+if has_firewall then
 	function fwzone.cfgvalue(self, section)
 		self.iface = section
 		local z = fw:get_zone_by_network(section)
 		return z and z:name()
 	end
+end
 
 return m