luci-base: luci.tools.status: properly parse infinite dnsmasq leases

The expiry time in a dnsmasq lease file line may be 0 (i.e.
expiry date = 01/01/1970 00:00:00 GMT) to denote an infinite
lease time, so adjust the code to properly support that.

The expiry attribute of the lease object will be set to "false"
in case of an infinite lease. This is to mimic the odhcp code below.
If the expiry date is not equal to 0, then just do exactly what was
done before (return the os.diff of current time and ts).

Signed-off-by: Cody R. Brown <dev@codybrown.ca>

diff --git a/modules/luci-base/luasrc/tools/status.lua b/modules/luci-base/luasrc/tools/status.lua
index b0df9d365a03dcccdbb189722530e3f38ddb3aef..95ff46df15eeda415a808a1f6e5087caf23bd0ae 100644 (file)
--- a/modules/luci-base/luasrc/tools/status.lua
+++ b/modules/luci-base/luasrc/tools/status.lua
@@ -26,17 +26,18 @@ local function dhcp_leases_common(family)
                                break
                        else
                                local ts, mac, ip, name, duid = ln:match("^(%d+) (%S+) (%S+) (%S+) (%S+)")
+                               local expire = tonumber(ts) or 0
                                if ts and mac and ip and name and duid then
                                        if family == 4 and not ip:match(":") then
                                                rv[#rv+1] = {
-                                                       expires  = os.difftime(tonumber(ts) or 0, os.time()),
+                                                       expires  = (expire ~= 0) and os.difftime(expire, os.time()),
                                                        macaddr  = mac,
                                                        ipaddr   = ip,
                                                        hostname = (name ~= "*") and name
                                                }
                                        elseif family == 6 and ip:match(":") then
                                                rv[#rv+1] = {
-                                                       expires  = os.difftime(tonumber(ts) or 0, os.time()),
+                                                       expires  = (expire ~= 0) and os.difftime(expire, os.time()),
                                                        ip6addr  = ip,
                                                        duid     = (duid ~= "*") and duid,
                                                        hostname = (name ~= "*") and name