WAF: Add DropRequest helper to block request in hooks

[blotus]

Allow to manually block requests from a pre_eval hook.

This allows for example to easily implement geoblocking by reusing existing crowdsec helpers:

 - filter: IsInBand == true && GeoIPEnrich(req.RemoteAddr)?.Country.IsoCode not in ["FR", "US"]
   apply:
     - SetReturnCode(400)
     - DropRequest("Forbidden Country")

[github-actions]

@blotus: There are no 'kind' label on this PR. You need a 'kind' label to generate the release automatically.

• /kind feature
• /kind enhancement
• /kind refactoring
• /kind fix
• /kind chore
• /kind dependencies

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[github-actions]

@blotus: There are no area labels on this PR. You can add as many areas as you see fit.

• /area agent
• /area local-api
• /area cscli
• /area appsec
• /area security
• /area configuration

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[blotus]

/kind feature
/area appsec

[codecov]

Codecov Report

❌ Patch coverage is 79.92126% with 51 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.72%. Comparing base (41a6419) to head (af1ff05).

Files with missing lines	Patch %	Lines
pkg/acquisition/modules/appsec/appsec_runner.go	70.14%	11 Missing and 9 partials ⚠️
pkg/acquisition/modules/appsec/utils.go	84.55%	11 Missing and 8 partials ⚠️
pkg/appsec/appsec.go	80.00%	7 Missing and 3 partials ⚠️
pkg/appsec/tx.go	60.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4016      +/-   ##
==========================================
- Coverage   62.72%   62.72%   -0.01%     
==========================================
  Files         416      416              
  Lines       32969    33136     +167     
==========================================
+ Hits        20681    20783     +102     
- Misses      10168    10215      +47     
- Partials     2120     2138      +18     

Flag	Coverage Δ
bats	46.29% <38.97%> (-0.12%)	⬇️
unit-linux	35.51% <79.92%> (+0.16%)	⬆️
unit-windows	24.84% <59.44%> (+0.12%)	⬆️

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[buixor]

merge the ifs for clarity ?