[NSE] SSLv2-support script portrule bugfix

[Sven Klemm <sven () c3d2 de>]

The portrule for the SSLv2-support script does not trigger for
services except for https I changed the portrule to trigger on
https,imaps, pop3s and their numeric ports or any service tunneled
through ssl.

Cheers,
Sven

-- 
Sven Klemm
http://cthulhu.c3d2.de/~sven/

Index: SSLv2-support.nse
===================================================================
--- SSLv2-support.nse   (revision 6682)
+++ SSLv2-support.nse   (working copy)
@@ -7,8 +7,12 @@
 
 require "shortport"
 
-portrule = shortport.port_or_service(443, {"ssl/http", "ssl", "https"})
+local portfunction = shortport.port_or_service({443,993,995},{'https','imaps','pop3s'})
 
+portrule = function( host, port )
+  return portfunction( host, port ) or port.version.service_tunnel == 'ssl'
+end
+
 hex2dec = function(hex)
 
        local byte1, byte2;

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