[Bro] ANALYZER_* resolution

Justin Thomas justin at justinthomas.name
Fri Dec 7 17:35:14 PST 2012

Another (I think) simple question: how do I resolve the "count" constant to
its appropriate ANALYZER_* name string? I think I need to do something with
dpd_config, but can't seem to find the right information.

I can see (through observation) that 34 is ANALYZER_SSL, 9 is ANALYZER_DNS
and 13 is ANALYZER_HTTP, but I can't find those associations anywhere in
the code.

What I want to do is have a script that validates the protocol of a flow
for a web application I'm using. So I'm getting that data out of Bro with a
Python script using this snippet in site/local.bro:

global protocol_confirmation_custom: event(cid: conn_id, atype: count);
event protocol_confirmation(c: connection, atype: count, aid: count) {
    event protocol_confirmation_custom(c$id, atype);

My script then gets data like:

protocol_confirmation {'orig_p': '34850/tcp', 'orig_h': 'x.x.x.x',
'resp_p': '80/tcp', 'resp_h': 'x.x.x.x'} 13

Instead of that "13" at the end, I want "ANALYZE_HTTP". But obviously, I
don't want to just make that association manually - I'm sure there must be
a way to get the analyzer name programmatically, I just can't seem to find

Thanks for your help!
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