1 files changed, 37 insertions, 0 deletions
diff --git a/nselib/irc.lua b/nselib/irc.lua
new file mode 100644
index 0000000..6203436
--- /dev/null
+++ b/nselib/irc.lua
@@ -0,0 +1,37 @@
+---
+-- IRC functions.
+--
+-- @copyright Same as Nmap--See https://nmap.org/book/man-legal.html
+
+local stdnse = require "stdnse"
+_ENV = stdnse.module("irc", stdnse.seeall)
+
+--- Portrule for matching IRC services
+--
+-- @usage portrule = irc.portrule
+--
+-- @param host
+-- @param port
+-- @return Boolean true if the port is likely to be IRC
+-- @class function
+portrule = (require "shortport").port_or_service(
+  {
+    -- Shodan.io top 3 IRC ports
+    6667,
+    6666,
+    6664,
+    -- other ports in the "ircu" assignment block
+    6665,
+    6668,
+    6669,
+    -- common SSL irc ports
+    6679,
+    6697,
+    7000,
+    -- other common ports
+    8067,
+  },
+  { "irc", "ircs", "ircs-u", "ircd", "irc-serv" } -- this covers ports 194, 529, and 994
+  )
+
+return _ENV