(Not sure if I am interpreting your question right but here is how I read it)
basically use "in" operator
local my_ip_table : table[addr] of bool ;
local ip: addr = 127.0.0.1
if ( ip in my_ip_table)
found
else
not found
btw, you can also use "!in" operator too which is rather more handy
if (something !in table)
initialize it here
table[something] = Blah;
or
most of scripts just flat return in membership doesn't exist that helps
eliminate a lot of unneeded run through scripts.
if (ip !in Site::local_nets)
return
<do rest of the heuristics here for local IPs>
Here is a (rather complicated but) useful example which stretches
above problem with an extended use-case:
/usr/local/bro/share/bro/policy/frameworks/software/vulnerable.bro
Hope this helps. Let me know if you need more clearifications.
Aashish
On Tue, Aug 08, 2017 at 11:04:23AM -0700, Reinhard Gentz wrote:
> Hi,
>
> I would like to check if a certain table element exists and then take
> corresponding action like the following:
>
> if (exists(mytable["my_dynamic_name"]))
> do something
> else
> do something else
>
>
> Can someone give me a hint?
> Reinhard
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