Reject mismatched sources rules changes #3383
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This PR may bring feature or behavior changes in the Falco engine and may require the engine version to be bumped. Please double check userspace/engine/falco_engine_version.h file. See versioning for FALCO_ENGINE_VERSION. /hold |
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jasondellaluce
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LGTM label has been added. Git tree hash: f8e26de41c24d3e88628c14b6752eae961e09ed3
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It's possible that someone might want to override a property for a non-syscall rule source. To assist in this, decode any source property for rules with append/override and save it in the rule_update_info object. For the source property only, the value for source can be empty e.g. 'source: ' or an empty string e.g. 'source: ""'. Both of those are considered valid but result in an empty source. A later change will ensure that the sources match up when appending/redefining/overriding/enabling. Signed-off-by: Mark Stemm <[email protected]>
In places where a second rule definition might replace, append to, or replace items from a base rule, ensure that the source of the second rule definiton matches the first. This already existed for defines, but for other changes. There was a bug where a second definition might exist for a different source, but the additional rule was used anyway. This now returns the same error for these other changes e.g. "Rule has been re-defined..." as define. Signed-off-by: Mark Stemm <[email protected]>
Add additional unit tests to verify that rule loading fails when a second rules object has a different source but the name of an existing rules object. Also add tests for additional rules having an empty source. Signed-off-by: Mark Stemm <[email protected]>
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jasondellaluce
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LGTM label has been added. Git tree hash: f0440bfccf20a2bd61217d01cf79b9722030a6d0
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: FedeDP, mstemm The full list of commands accepted by this bot can be found here. The pull request process is described here
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/milestone 0.40.0 |
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/unhold |
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What type of PR is this?
/kind bug
Any specific area of the project related to this PR?
/area engine
What this PR does / why we need it:
This fixes a bug where a second rule definition for a different source is mistakenly combined with the first rule definition of a different source. This now returns the same error as when defining a second rule.
Which issue(s) this PR fixes:
Fixes #3382
Special notes for your reviewer:
Does this PR introduce a user-facing change?: