Add support for stateful DHCPv6

1 files changed, 27 insertions, 3 deletions

diff --git a/modules/admin-core/luasrc/tools/status.lua b/modules/admin-core/luasrc/tools/status.lua
index 3ececa8f1..becd7d465 100644
--- a/modules/admin-core/luasrc/tools/status.lua
+++ b/modules/admin-core/luasrc/tools/status.lua
@@ -66,10 +66,34 @@ function dhcp_leases()
 end
 
 function dhcp6_leases()
-	if luci.sys.call("dnsmasq --version 2>/dev/null | grep -q ' DHCPv6 '") == 0 then
+	local nfs = require "nixio.fs"
+	local leasefile = "/tmp/hosts/6relayd"
+	local rv = {}
+
+	if nfs.access(leasefile, "r") then
+		local fd = io.open(leasefile, "r")
+		if fd then
+			while true do
+				local ln = fd:read("*l")
+				if not ln then
+					break
+				else
+					local iface, duid, iaid, name, ts, id, length, ip = ln:match("^# (%S+) (%S+) (%S+) (%S+) (%d+) (%S+) (%S+) (.*)")
+					if ip then
+						rv[#rv+1] = {
+							expires  = os.difftime(tonumber(ts) or 0, os.time()),
+							duid     = duid,
+							ip6addr  = ip,
+							hostname = (name ~= "-") and name
+						}
+					end
+				end
+			end
+			fd:close()
+		end
+		return rv
+	elseif luci.sys.call("dnsmasq --version 2>/dev/null | grep -q ' DHCPv6 '") == 0 then
 		return dhcp_leases_common(6)
-	else
-		return nil
 	end
 end