iptables: stylistic adjustments

1 files changed, 25 insertions, 17 deletions

diff --git a/awall/iptables.lua b/awall/iptables.lua
index 36376c5..ffe2977 100644
--- a/awall/iptables.lua
+++ b/awall/iptables.lua
@@ -1,6 +1,6 @@
 --[[
 Iptables file dumper for Alpine Wall
-Copyright (C) 2012-2019 Kaarle Ritvanen
+Copyright (C) 2012-2020 Kaarle Ritvanen
 See LICENSE file for license details
 ]]--
 
@@ -20,12 +20,16 @@ local posix = require('posix')
 
 local M = {}
 
-local families = {inet={cmd='iptables',
-			file='rules-save',
-			procfile='/proc/net/ip_tables_names'},
-		  inet6={cmd='ip6tables',
-			 file='rules6-save',
-			 procfile='/proc/net/ip6_tables_names'}}
+local families = {
+   inet={
+      cmd='iptables', file='rules-save', procfile='/proc/net/ip_tables_names'
+   },
+   inet6={
+      cmd='ip6tables',
+      file='rules6-save',
+      procfile='/proc/net/ip6_tables_names'
+   }
+}
 
 M.builtin = {
    filter={'FORWARD', 'INPUT', 'OUTPUT'},
@@ -94,29 +98,33 @@ M.IPTables = class(BaseIPTables)
 
 function M.IPTables:init()
    self.config = {}
-   setmetatable(self.config,
-		{__index=function(t, k)
-			    t[k] = {}
-			    setmetatable(t[k], getmetatable(t))
-			    return t[k]
-			 end})
+   setmetatable(
+      self.config,
+      {
+	 __index=function(t, k)
+	    t[k] = {}
+	    setmetatable(t[k], getmetatable(t))
+	    return t[k]
+	 end
+      }
+   )
 end
 
 function M.IPTables:dumpfile(family, iptfile)
    iptfile:write('# '..families[family].file..' generated by awall\n')
    local tables = self.config[family]
-   for i, tbl in sortedkeys(tables) do
+   for _, tbl in sortedkeys(tables) do
       iptfile:write('*'..tbl..'\n')
       local chains = tables[tbl]
-      for i, chain in sortedkeys(chains) do
+      for _, chain in sortedkeys(chains) do
 	 local policy = '-'
 	 if util.contains(M.builtin[tbl], chain) then
 	    policy = tbl == 'filter' and 'DROP' or 'ACCEPT'
 	 end
 	 iptfile:write(':'..chain..' '..policy..' [0:0]\n')
       end
-      for i, chain in sortedkeys(chains) do
-	 for i, rule in ipairs(chains[chain]) do
+      for _, chain in sortedkeys(chains) do
+	 for _, rule in ipairs(chains[chain]) do
 	    iptfile:write('-A '..chain..' '..rule..'\n')
 	 end
       end