.git broken, restart

usr/share/nmap/scripts/check-port.nse

@@ -0,0 +1,39 @@
+-- check-port.nse
+local nmap   = require "nmap"
+local stdnse = require "stdnse"
+local shortport = require "shortport"
+
+local arg_port = tonumber(stdnse.get_script_args("checkport.port")) or 80
+
+portrule = function(host, port)
+  return port.number == arg_port
+end
+
+action = function(host, port)
+  if port.state ~= "open" then
+    return ("port %d closed on %s"):format(port.number, host.ip or host.targetname)
+  end
+
+  local s, err = nmap.new_socket()
+  if not s then
+    return ("socket error: %s"):format(err or "unknown")
+  end
+
+  s:set_timeout(3000)
+  local ok, cerr = s:connect(host.ip, port.number)
+  if not ok then
+    s:close()
+    return ("connect failed: %s"):format(cerr or "unknown")
+  end
+
+  local status, data = pcall(function() return s:receive(512) end)
+  s:close()
+
+  if status and data and #data > 0 then
+    data = data:gsub("%s+", " ")
+    return ("port %d open — banner: %q"):format(port.number, data)
+  end
+
+  return ("port %d open — no banner"):format(port.number)
+end
+