zeek/scripts/policy/frameworks/notice/community-id.zeek
Arne Welzel cb679e4d7a policy/community-id: Populate conn$community_id in new_connection()
This wasn't possible before #3028 was fixed, but now it's safe to set
the value in new_connection() and allow other users access to the
field much earlier. We do not have to deal with connection_flipped()
because the community-id hash is symmetric.
2024-11-08 18:19:55 +01:00

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# Source this script to add Community ID to notices.
# This script will automatically load the main community-id script.
@load base/protocols/conn
@load base/frameworks/notice
@load policy/protocols/conn/community-id-logging
module CommunityID::Notice;
export {
# Turn notice support on/off at runtime. When disabled,
# this still leaves the `community_id` string in the notice
# log, just unset.
option enabled: bool = T;
redef record Notice::Info += {
community_id: string &optional &log;
};
}
hook Notice::notice(n: Notice::Info)
{
if ( CommunityID::Notice::enabled && n?$conn && n$conn?$conn )
{
local info = n$conn$conn;
# This is set during new_connection(), so it should
# always be there, but better safe than sorry.
if ( info?$community_id )
n$community_id = info$community_id;
}
}