Add support for showing ipv6 NAT table in Luci

When kmod-nf-nat6 and kmod-ipt-nat6 are installed, the firewall has also
the 'nat' table for ipv6, and packages like 'adblock' utilize that table.

Currently that table is not shown on the Luci firewall status page,
although it is visible by 'ip6tables -L -v -t nat' from console.

Detect 'nat' table's presence from /proc/net/ip6_tables_names

Show 'nat' table in Status->Firewall->IPv6 if that table is present.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
(cherry picked from commit a77ff30057c691009dac646adbac28d6230814b6)

diff --git a/modules/luci-base/luasrc/sys/iptparser.lua b/modules/luci-base/luasrc/sys/iptparser.lua
index 2b81e0e..a9dbc30 100644 (file)
--- a/modules/luci-base/luasrc/sys/iptparser.lua
+++ b/modules/luci-base/luasrc/sys/iptparser.lua
@@ -19,6 +19,8 @@ luci.util   = require "luci.util"
 luci.sys    = require "luci.sys"
 luci.ip     = require "luci.ip"
 
+local pcall = pcall
+local io = require "io"
 local tonumber, ipairs, table = tonumber, ipairs, table
 
 module("luci.sys.iptparser")
@@ -37,6 +39,15 @@ function IptParser.__init__( self, family )
        else
                self._nulladdr = "::/0"
                self._tables   = { "filter", "mangle", "raw" }
+               local ok, lines = pcall(io.lines, "/proc/net/ip6_tables_names")
+               if ok and lines then
+                       local line
+                       for line in lines do
+                               if line == "nat" then
+                                       self._tables = { "filter", "nat", "mangle", "raw" }
+                               end
+                       end
+               end
                self._command  = "ip6tables -t %s --line-numbers -nxvL"
        end
 

diff --git a/modules/luci-mod-admin-full/luasrc/view/admin_status/iptables.htm b/modules/luci-mod-admin-full/luasrc/view/admin_status/iptables.htm
index ba2933a..6553d7d 100644 (file)
--- a/modules/luci-mod-admin-full/luasrc/view/admin_status/iptables.htm
+++ b/modules/luci-mod-admin-full/luasrc/view/admin_status/iptables.htm
@@ -9,6 +9,7 @@
        require "luci.sys.iptparser"
        local wba = require "luci.tools.webadmin"
        local fs = require "nixio.fs"
+       local io = require "io"
 
        local has_ip6tables = fs.access("/usr/sbin/ip6tables")
        local mode = 4
@@ -47,6 +48,15 @@
        local tables = { "Filter", "NAT", "Mangle", "Raw" }
        if mode == 6 then
                tables = { "Filter", "Mangle", "Raw" }
+               local ok, lines = pcall(io.lines, "/proc/net/ip6_tables_names")
+               if ok and lines then
+                       local line
+                       for line in lines do
+                               if line == "nat" then
+                                       tables = { "Filter", "NAT", "Mangle", "Raw" }
+                               end
+                       end
+               end
        end
 -%>