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Ulrik Haugen

PROFILE

Ulrik Haugen

Over a nine-month period, this developer contributed to core Greenbone repositories such as openvas-scanner, gvmd, and gvm-libs, focusing on installation reliability, documentation clarity, and memory safety. They enhanced user and contributor onboarding by refining configuration and governance documentation, aligning licensing with MIT-0, and clarifying dependency requirements. Their work in C and CMake addressed memory allocation bugs and improved build stability by enforcing consistent library versions and linking practices. They also expanded unit testing for JWT credential handling and documented prerequisites for sanitizer-enabled builds, resulting in more robust deployments, reduced installation errors, and improved maintainability across the Greenbone ecosystem.

Overall Statistics

Feature vs Bugs

80%Features

Repository Contributions

18Total
Bugs
3
Commits
18
Features
12
Lines of code
139
Activity Months9

Work History

May 2026

1 Commits

May 1, 2026

May 2026 GVMD monthly summary focusing on business value and technical achievements. No new features introduced; primary focus was stabilizing the installer by aligning prerequisites with the CMake configuration to prevent build/install inconsistencies.

March 2026

1 Commits • 1 Features

Mar 1, 2026

2026-03 (March 2026) monthly summary for greenbone/gvm-libs: Strengthened credentials handling by expanding JWT field validation tests. Delivered tests to cover new JWT fields (jwt and jwt_requested) added to credentials_t, and updated credentials_tests to validate end-to-end JWT data flow. This results in improved security validation, reduced risk of JWT-related regressions, and higher confidence in future changes. No major bugs fixed this month; primary impact was enhanced test coverage and maintainability, with traceable commits.

February 2026

2 Commits • 2 Features

Feb 1, 2026

February 2026: Documentation updates clarifying libasan prerequisites for test builds in gvmd and openvas-scanner, including the need to invoke gcc with -fsanitize=address. These changes align build instructions with sanitizer-enabled testing, improving developer onboarding and CI reliability.

January 2026

2 Commits • 2 Features

Jan 1, 2026

Monthly summary for 2026-01: Focused on improving installation reliability and feature enablement through precise dependency and prerequisite documentation across core repos. The work reduces setup time, minimizes misconfigurations, and enables faster rollout of agent and container scanning capabilities.

October 2025

1 Commits • 1 Features

Oct 1, 2025

October 2025 monthly summary for the greenbone/gvmd repository focused on improving installation reliability and dependency hygiene. Implemented a clear minimum gvm-libs version requirement and updated documentation to prevent misinstallation, aligning with the latest library expectations to ensure proper gvmd functionality. No critical bugs fixed this month; stability remained steady as dependency alignment reduced installation errors. Tech debt reduction and clearer release traceability were achieved through precise documentation and commit recordkeeping.

September 2025

2 Commits • 1 Features

Sep 1, 2025

September 2025 performance review: Delivered critical compatibility and stability improvements across gvmd and gvm-libs. Updated installation docs to enforce a minimum gvm-libs version, ensuring consistent dependency management and smoother deployments. Fixed container image build stability by addressing undefined symbols through proper cJSON linking in container_image_scanner, improving runtime reliability and CI/build health. These changes reduce deployment risk, improve customer satisfaction, and support scalable deployments. Demonstrated proficiency in dependency management, CMake configuration, and cross-repo collaboration for reliable software delivery.

August 2025

1 Commits

Aug 1, 2025

August 2025 monthly summary for development work focusing on reliability and memory safety in core libraries. Key improvement: stabilized the OpenVASd Connector in greenbone/gvm-libs by fixing the allocation size for the stream_resp variable, eliminating a class of memory allocation errors during connector shutdown. Key achievements include precise allocation size correction in openvasd_connector_free, guided by the commit 6e274cc13ac28c24579757ec42923227642a548a, which enhances runtime stability for scans and reduces crash risk in production deployments. Major bugs fixed: memory allocation handling in stream_resp during openvasd_connector_free, addressing potential allocation errors that could lead to crashes when terminating OpenVASd Connector sessions. Overall impact and accomplishments: Improved reliability and safety of the OpenVASd Connector, leading to more stable scanning pipelines, fewer runtime failures, and better downstream developer experience across teams relying on gvm-libs. This work contributes to robustness, maintainability, and confidence in production deployments. Technologies/skills demonstrated: C memory management, debugging and fix verification for low-level allocator behavior, code traceability with commits, and adherence to safety-oriented fixes in critical libraries.

July 2025

5 Commits • 3 Features

Jul 1, 2025

July 2025: Implemented Table Driven LSC UX and configuration documentation enhancements in greenbone/openvas-scanner; updated gvmd installation prerequisites to enforce newer CMake and gvm-libs minimum versions; and fixed a documentation link to point directly to the OpenVAS Scanner repository. Result: clearer configuration behavior, more reliable builds, and improved cross-repo consistency.

June 2025

3 Commits • 2 Features

Jun 1, 2025

June 2025 performance summary for greenbone/openvas-scanner: delivered key user-facing configuration documentation and governance improvements, aligning contributions with MIT-0 licensing and DCO requirements. Focused on documentation quality, contributor onboarding, and governance transparency to enable broader adoption and stable project operations.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

CC++CMakeMarkdownNroffRustShell

Technical Skills

Build SystemsC programmingCMakeDependency ManagementDocumentationLegalLicensingSystem Librariesdependency managementdocumentationinstallationmemory managementsoftware testingsystem configurationunit testing

Repositories Contributed To

3 repos

Overview of all repositories you've contributed to across your timeline

greenbone/gvmd

Jul 2025 May 2026
6 Months active

Languages Used

Markdown

Technical Skills

Documentationdocumentationinstallationsystem configurationC programmingCMake

greenbone/openvas-scanner

Jun 2025 Feb 2026
3 Months active

Languages Used

MarkdownNroffRustShell

Technical Skills

DocumentationLegalLicensingC programmingdocumentation

greenbone/gvm-libs

Aug 2025 Mar 2026
4 Months active

Languages Used

CC++CMakeMarkdown

Technical Skills

C programmingmemory managementsoftware testingBuild SystemsDependency ManagementSystem Libraries