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* origin/topic/vladg/dhcp: DHCP: Adding unit tests. DHCP: Rework the DHCP analyzer to make it compatible again.
41 lines
1.5 KiB
Text
41 lines
1.5 KiB
Text
##! This script provides infrastructure for logging devices for which Bro has been
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##! able to determine the MAC address, and it logs them once per day (by default).
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##! The log that is output provides an easy way to determine a count of the devices
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##! in use on a network per day.
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##!
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##! ..note::
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##!
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##! This script will not generate any logs on its own, it needs to be
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##! supplied with information from elsewhere, such as
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##! :doc:`policy/protocols/dhcp/known-devices-and-hostnames/scripts/.
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module Known;
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export {
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## The known-hosts logging stream identifier.
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redef enum Log::ID += { DEVICES_LOG };
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## The record type which contains the column fields of the known-devices log.
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type DevicesInfo: record {
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## The timestamp at which the host was detected.
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ts: time &log;
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## The MAC address that was detected.
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mac: string &log;
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};
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## The set of all known MAC addresses. It can accessed from other
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## to add, and check for, addresses seen in use.
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##
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## We maintain each entry for 24 hours by default so that the existence of
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## individual addressed is logged each day.
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global known_devices: set[string] &create_expire=1day &synchronized &redef;
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## An event that can be handled to access the :bro:type:`Known::DevicesInfo`
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## record as it is sent on to the logging framework.
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global log_known_devices: event(rec: DevicesInfo);
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}
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event bro_init()
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{
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Log::create_stream(Known::DEVICES_LOG, [$columns=DevicesInfo, $ev=log_known_devices]);
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}
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