zeek/testing
Arne Welzel f3f593c523 IPBasedAnalyzer/TCPSessionAdapter: Fix TCP reassembly decision for known port analyzers
This seems to be an age-old bug. Reported by mchen on discourse [1].

The TCPSessionAdapter decides in AddExtraAnalyzers() whether to enable
reassembly or not. When dpd_reassemble_first_packets is F, this boils down to
! GetChildren().empty(). The intention being that if any analyzers have been
added to the connection based on known ports, reassembly is to be enabled.

However, GetChildren() does not take into account new_children and so
! GetChildren().empty() is always false here and reassembly solely
based on dpd_reassemble_first_packets=F (or the tcp_content... options).
Ouch.

Call AppendNewChildren() before AddExtraAnalyzers() as a fix. Without this,
the new test does not produce an http.log and service "http" isn't in conn.log.

[1] https://community.zeek.org/t/how-to-activate-an-application-layer-analyzer-when-signature-dpd-reassemble-first-packets-is-off/6763
2022-10-25 16:07:40 +02:00
..
benchmark/broker Port Zeek to latest Broker API 2022-04-27 23:02:27 +02:00
btest IPBasedAnalyzer/TCPSessionAdapter: Fix TCP reassembly decision for known port analyzers 2022-10-25 16:07:40 +02:00
coverage Format shell scripts with shfmt. 2021-11-24 23:13:02 +01:00
external Management framework: bump zeek-client and cluster testsuite 2022-10-24 16:00:58 -07:00
scripts Deprecate bro_int_t and bro_uint_t 2022-07-12 12:01:23 -07:00
.gitignore
CMakeLists.txt Install Zeek's btest tooling with the distribution 2021-03-11 13:00:15 -08:00
Makefile
README

This directory contains suites for testing for Zeek's correct
operation:

    btest/
        An ever-growing set of small unit tests testing Zeek's
        functionality.

    external/
        A framework for downloading additional test sets that run more
        complex Zeek configuration on larger traces files. Due to their
        size, these are not included directly. See the README for more
        information. 

    scripts/
        Helpers scripts used by some tests.