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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[2.0.0] - 2024-11-20

Added

  • IPv6 Support: Extended the script to handle both IPv4 and IPv6 prefixes, enabling comprehensive IP range processing.
  • Separate Processing Pipelines: Implemented distinct processing logic for IPv4 and IPv6 ranges to optimize performance and maintain code clarity.
  • Range Merging and Sorting: Added functionality to merge and sort cloud IP ranges upfront, reducing redundancy and enhancing subtraction efficiency.
  • Optimized Bitwise Operations: Improved bitwise operations for both GMP and BCMath extensions to minimize computational overhead and speed up processing.
  • Enhanced Functionality:
    • Updated IP conversion functions to support IPv6 addresses using inet_pton and inet_ntop.
    • Refactored CIDR to range and range to CIDR conversion functions to accommodate IPv6 addressing.
  • Composer Dependencies: Updated composer.json to include dependencies for PHP extensions GMP and BCMath, along with scripts to enforce their presence.
  • Comprehensive Documentation: Enhanced script comments and documentation to reflect IPv6 support and the associated changes in functionality.

Changed

  • CIDR Conversion Functions: Refactored CIDR to range and range to CIDR conversion functions to accommodate IPv6 addressing.
  • Autoload Configuration: Ensured the main script google_ip_prefix_diff.php is automatically included when the package is installed via Composer.
  • Versioning: Updated project version to 2.0.0 to signify major enhancements and feature additions.

Fixed

  • Range Difference Logic: Corrected the range difference calculations to ensure accurate subtraction of cloud IP ranges from Google's IP ranges for both IPv4 and IPv6.

Performance Optimizations

  • Execution Speed: The script now executes in under 500ms on our test server, a significant improvement from the original Python script's 1.5 seconds for the same task. This enhancement ensures faster IP range calculations, making the script more efficient and responsive.

[1.0.1] - 2024-11-20

New Feature: Direct CLI Output

This release introduces the ability for the script to output the calculated IP prefixes directly to the CLI when executed from the command line.

What's New?

  • When the script is run via CLI (php google_ip_prefix_diff.php), it now outputs the resulting IP prefixes (CIDR blocks) line by line.
  • This makes it easier to redirect the output to a file for caching or further processing: 
    php google_ip_prefix_diff.php > cached_ip_ranges.txt

Benefits:

  • Automation-Friendly: Enables easy integration with cron jobs or other automation tools.
  • Improved Usability: Users no longer need to manually handle the returned array when running the script via CLI.

[1.0.0] - 2024-11-19

Added

  • IPv4 Support: Introduced initial release supporting IPv4 prefixes only.
  • IP Range Difference Calculation: Implemented functionality to fetch and process IP ranges from goog.json and cloud.json, calculating the difference between them.
  • Basic Documentation: Provided initial comments and documentation detailing script functionality and usage.
  • Composer Autoloading: Configured composer.json to autoload the main script google_ip_prefix_diff.php.