VIP Request Block: Add function to allow for blocking by partial User Agent string.

[mslinnea]

Description

I would like to block requests by a partial match on the user agent string. The use case is a User Agent header like 'WordPress/6.1.1; https://www.example.com' which is the default format of a User Agent string to WordPress. If I block by exact match, as soon as WordPress is upgraded, this exact match will no longer work.

Changelog Description

Adds VIP_Request_Block::ua_partial_match

Checklist

Please make sure the items below have been covered before requesting a review:

• This change works and has been tested locally (or has an appropriate fallback).
• This change works and has been tested on a Go sandbox.
• This change has relevant unit tests (if applicable).
• This change uses a rollout method to ease with deployment (if applicable - especially for large scale actions that require writes).
• This change has relevant documentation additions / updates (if applicable).
• I've created a changelog description that aligns with the provided examples.

Steps to Test

Outline the steps to test and verify the PR here.

Example:

1. Check out PR.
2. Follow documentation in https://docs.wpvip.com/how-tos/block-requests/ to test, except use VIP_Request_Block::ua_partial_match with a substring instead of VIP_Request_Block::ua

[codecov]

Codecov Report

Merging #4001 (f05ae23) into develop (b6fd950) will increase coverage by 0.01%.
The diff coverage is 62.50%.

@@              Coverage Diff              @@
##             develop    #4001      +/-   ##
=============================================
+ Coverage      32.27%   32.29%   +0.01%     
- Complexity      3768     3771       +3     
=============================================
  Files            226      226              
  Lines          16803    16807       +4     
=============================================
+ Hits            5424     5428       +4     
  Misses         11379    11379              

Impacted Files	Coverage Δ
lib/class-vip-request-block.php	58.13% <62.50%> (+4.29%)	⬆️

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[rebeccahum]

@sjinks I committed the changes on behalf.

[sjinks]

@rebeccahum thank you, I will take a closer look tomorrow - I see SonarCloud complains etc.

[GaryJones]

It's suggesting that this line should be static::block_and_log() and not self::block_and_log() - i.e. make use of late static binding (PHP 5.3) to reference any child class that may have extended this class which may overwrite block_and_log().

Same fix will be needed in at least one other method too.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication