V3/do not add newline to test body lines

[hnakamur]

what

• Stop adding newline to each line of request or response body in regression tests.
• Add format subcommand to regression_tests command.
• Support updating Content-Length header by running (cd test; UPDATE_CONTENT_LENGTH=1 ./regression_tests format)
• Update regression test JSON files:
  • Add newlines to request bodies where needed.
  • Add Content-Length headers.
  • Adjust test casses to pass after above modifications.

why

• Enable to test edge cases (such as request body lines with newline except the last line). This is important for multipart request bodies.

references

• Refine SecRequestBodyNoFilesLimit test cases to cover edge scenarios #3479

[hnakamur]

I found JSON was corrupted since some of http_version was empty. I fixed it and force pushed.
However some of tests do not pass right now. I am trying to fix them.

[hnakamur]

I fixed tests at aefd4a4 and now all tests pass again.

[airween]

Hi @hnakamur,

thank you for this improved PR.

Unfortunately there are two warnings from cppcheck:

2026-01-26T00:29:37.2162370Z warning: test/regression/regression.cc,444,style,shadowVariable,Local variable 'test' shadows outer variable
2026-01-26T00:29:37.2943530Z warning: test/regression/regression_test.cc,366,style,functionConst,The member function 'modsecurity_test::RegressionTests::toJSON' can be made a const function. Making this function 'const' should not cause compiler errors. Even though the function can be made const function technically it may not make sense conceptually. Think about your design and the task of the function first - is it a function that must not change object internal state?

Also, SonarCloud reported a few new issues (some of them are same as cppcheck found):

https://sonarcloud.io/project/issues?id=owasp-modsecurity_ModSecurity&pullRequest=3486&issueStatuses=OPEN,CONFIRMED&sinceLeakPeriod=true

As I mentioned previously, I don't expect to fix all Sonar issues. If the cppcheck will be passed, I'll review all Sonar issues and try to mark the "old" issues as accepted.

Thank you again.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud