Dataset set postmatch 5576 v14 #12196
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Will be useful for dataset, when it needs to find a transaction buffer again.
The set operation of dataset keyword was done even if signature did not fully match, which is not the expected behavior. We want dataset to behave like flowbits for instance. This patch changes the behavior of the dataset keyword to do a match and a post match for the set operation. The postmatch retrieves the data, using the list identifier associated to the buffer for this signature. This avoids to store the buffer(s), when we do not have a dedicated storage (per signature and per tx) that can own and clean arbitrary buffers over multiple packets, in the case the transaction spans over multiple packets with different tx progresses for instance. If detection runs on one packet, the InspectionBuffer are cached and fast to get. The most expensive case if for multi buffers, where we need to run detection again, to see which occurences match all payload keywords and should be added in the dataset. Ticket: OISF#5576
Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #12196 +/- ##
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- Coverage 83.16% 83.15% -0.01%
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Files 912 912
Lines 257066 257197 +131
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+ Hits 213797 213884 +87
- Misses 43269 43313 +44
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Next in #12230 |
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Link to ticket: https://redmine.openinfosecfoundation.org/issues/
https://redmine.openinfosecfoundation.org/issues/5576
Describe changes:
SV_BRANCH=OISF/suricata-verify#2093
#12126 rebased after merge of absent keyword
The design is :
How do you like the git history/commits ?