modules/admin-full: live status, validation for dhcp leases

[project/luci.git] / modules / admin-full / luasrc / controller / admin / network.lua

diff --git a/modules/admin-full/luasrc/controller/admin/network.lua b/modules/admin-full/luasrc/controller/admin/network.lua
index 9492e11..a6324f4 100644 (file)
--- a/modules/admin-full/luasrc/controller/admin/network.lua
+++ b/modules/admin-full/luasrc/controller/admin/network.lua
@@ -87,6 +87,9 @@ function index()
                page.target = cbi("admin_network/dhcpleases")
                page.title  = i18n("DHCP Leases")
                page.order  = 30
                page.target = cbi("admin_network/dhcpleases")
                page.title  = i18n("DHCP Leases")
                page.order  = 30

+
+               page = entry({"admin", "network", "dhcplease_status"}, call("lease_status"), nil)
+               page.leaf = true

        end
 
        page  = node("admin", "network", "hosts")
        end
 
        page  = node("admin", "network", "hosts")


@@ -249,3 +252,43 @@ function wifi_status()
 
        luci.http.status(404, "No such device")
 end
 
        luci.http.status(404, "No such device")
 end

+
+function lease_status()
+       local rv = { }
+       local leasefile = "/var/dhcp.leases"
+
+       local uci = require "luci.model.uci".cursor()
+       local nfs = require "nixio.fs"
+
+       uci:foreach("dhcp", "dnsmasq",
+               function(s)
+                       if s.leasefile and nfs.access(s.leasefile) then
+                               leasefile = s.leasefile
+                               return false
+                       end
+               end)
+
+       local fd = io.open(leasefile, "r")
+       if fd then
+               while true do
+                       local ln = fd:read("*l")
+                       if not ln then
+                               break
+                       else
+                               local ts, mac, ip, name = ln:match("^(%d+) (%S+) (%S+) (%S+)")
+                               if ts and mac and ip and name then
+                                       rv[#rv+1] = {
+                                               expires  = os.difftime(tonumber(ts) or 0, os.time()),
+                                               macaddr  = mac,
+                                               ipaddr   = ip,
+                                               hostname = (name ~= "*") and name
+                                       }
+                               end
+                       end
+               end
+               fd:close()
+       end
+
+       luci.http.prepare_content("application/json")
+       luci.http.write_json(rv)
+end