* Add lua plugin for checking received headers

* Some tunes to lua API
* Fix bug with http maps
* Optimize installation and make custom prefix for configs

1 files changed, 53 insertions, 0 deletions

diff --git a/src/plugins/lua/received_rbl.lua b/src/plugins/lua/received_rbl.lua
new file mode 100644
index 000000000..bee027f50
--- /dev/null
+++ b/src/plugins/lua/received_rbl.lua
@@ -0,0 +1,53 @@
+-- This plugin is designed for testing received headers via rbl
+-- Configuration:
+-- .module 'received_rbl' {
+--      rbl = "insecure-bl.rambler.ru";
+--      rbl = "xbl.spamhaus.org";
+--      metric = "default";
+--      symbol = "RECEIVED_RBL";
+-- };
+
+
+metric = 'default'
+symbol = 'RECEIVED_RBL'
+rbls = {}
+
+function dns_cb(task, to_resolve, results, err)
+	if results then
+		local _,_,rbl = string.find(to_resolve, '%d+\.%d+\.%d+\.%d+\.(.+)')
+		task:insert_result(metric, symbol, 1, rbl)
+	end
+end
+
+function received_cb (task)
+	local recvh = task:get_received_headers()
+    for _,rh in ipairs(recvh) do
+        for k,v in pairs(rh) do
+			if k == 'real_ip' then
+				local _,_,o1,o2,o3,o4 = string.find(v, '(%d+)\.(%d+)\.(%d+)\.(%d+)')
+				for _,rbl in ipairs(rbls) do
+					rbl_str = o4 .. '.' .. o3 .. '.' .. o2 .. '.' .. o1 .. '.' .. rbl
+					task:resolve_dns_a(rbl_str, 'dns_cb')
+				end
+			end
+        end
+    end
+end
+
+-- Configuration
+local opts =  rspamd_config:get_all_opt('received_rbl')
+if opts then
+	for n,v in pairs(opts) do
+		if n == 'rbl' then
+			table.insert(rbls, v)
+		elseif n == 'metric' then
+			metric = v
+		elseif n == 'symbol' then
+			symbol = v
+		end
+	end
+end
+
+-- Register symbol's callback
+local m = rspamd_config:get_metric(metric)
+m:register_symbol(symbol, 1.0, 'received_cb')