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[NSE patch] port or service not matching ports
From: Sven Klemm <sven () c3d2 de>
Date: Sun, 23 Dec 2007 16:09:02 +0100

Hi everyone,

the port_or_service function in the shortport library does not match
ports because the port variable passed to portnumber is shadowed by
the variable passed during portrule check. The attached patch fixes
this behaviour.

Index: shortport.lua
--- shortport.lua       (revision 6611)
+++ shortport.lua       (working copy)
@@ -65,7 +65,7 @@
-port_or_service = function(port, _service, proto, _state)
+port_or_service = function(_port, _service, proto, _state)
        local state = _state or {"open", "open|filtered"}
        local state_table
@@ -77,7 +77,7 @@
        return function(host, port)
                for _, state in pairs(state_table) do
-                       local port_checker = portnumber(port, proto, state)
+                       local port_checker = portnumber(_port, proto, state)
                        local service_checker = service(_service, proto, state)
                        if (port_checker(host, port) or service_checker(host, port)) then
                                return true

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