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files.log: Unroll and introduce uid and id fields

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This is a script-only change that unrolls File::Info records into
multiple files.log entries if the same file was seen over different
connections by single worker. Consequently, the File::Info record
gets the commonly used uid and id fields added. These fields are
optional for File::Info - a file may be analyzed without relation
to a network connection (e.g by using Input::add_analysis()).

The existing tx_hosts, rx_hosts and conn_uids fields of Files::Info
are not meaningful after this change and removed by default. Therefore,
files.log will have them removed, too.

The tx_hosts, rx_hosts and conn_uids fields can be revived by using the
policy script frameworks/files/deprecated-txhosts-rxhosts-connuids.zeek
included in the distribution. However, with v6.1 this script will be
removed.
This commit is contained in:
Arne Welzel 2022-08-16 17:22:20 +02:00
parent f631551ffb
commit d2314d2666
39 changed files with 412 additions and 113 deletions
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16
testing/btest/scripts/base/frameworks/file-analysis/logging-input-analysis.zeek Normal file
View file

@ -0,0 +1,16 @@
# @TEST-DOC: Verify the files.log mat when Input::add_analysis() The fields info$id and info$uid are not expected to be set.
# @TEST-EXEC: zeek -b -r $TRACES/http/get.trace $SCRIPTS/file-analysis-test.zeek %INPUT
# @TEST-EXEC: btest-diff files.log
@load base/frameworks/files
event zeek_init()
{
local source: string = "./myfile";
Input::add_analysis([$source=source, $name=source]);
}
@TEST-START-FILE ./myfile
%PDF-1.5
This isn't an actual pdf, but it shows in files.log as such :-)
@TEST-END-FILE