CIDR.WPF

A Windows desktop utility for processing, sorting, and formatting CIDR subnets and IP addresses. Built with WPF on .NET 10.0.

Features

• CIDR/IP Parsing: Extracts valid IPv4 and IPv6 addresses and CIDR subnets from any text input.
• Syntax Highlighting: Recognized entries are highlighted green in the input panel; unrecognized text is shown in red so it is clear what was and was not detected.
• Auto-Processing: Input is parsed and sorted automatically on paste, type, drag-and-drop, or API import — no manual button click required.
• Sorting: Automatically sorts IP addresses numerically (IPv4 first, then IPv6).
• Cloudflare Integration: Retrieves the current Cloudflare IP ranges directly from their public API.
• Flexible Output Formats:
  • One Per Line: Standard list format.
  • Space-Delimited: Useful for command-line arguments or scripts.
  • F5 BigIP Format: Formatted as F5 BigIP network statements (network <cidr>,).
  • Nginx Allow: Formatted as Nginx allow directives (allow <cidr>;).
  • Apache Require: Formatted as Apache 2.4 access directives (Require ip <cidr>).
• File Operations: Open input files and save formatted output using standard Windows dialogs (Ctrl+O / Ctrl+S).
• Drag & Drop: Drag a text file directly onto the window or input area to load it.
• Command Line: Pass a file path as an argument to open it on launch: CIDR.WPF.exe myfile.txt

Keyboard Shortcuts

Shortcut	Action
Ctrl+O	Open a text file
Ctrl+S	Save output to a file
Alt+F	File menu
Alt+I	Import Cloudflare Ranges
Alt+M	Focus the Output Format selector
Alt+P	Process and Sort
Alt+H	Help menu

Getting Started

Prerequisites

• Windows OS (WPF application)
• .NET 10.0 Runtime (or SDK to build)

Usage

1. Input Data: Paste text containing IPs or subnets into the Input panel, drag and drop a text file, or click Import Cloudflare Ranges.
2. Review: Recognized entries highlight green automatically; unrecognized text appears red.
3. Select Format: Choose your desired output format from the dropdown.
4. Result: The sorted and formatted list appears in the Output panel automatically.
5. Save: Use Ctrl+S or File > Save Output... to export results.

Building the Project

This project uses .NET 10.0.

dotnet restore
dotnet build

Code Style

This project includes an .editorconfig file that enforces consistent formatting. Use dotnet format to auto-fix style issues:

dotnet format

CI/CD

The project includes a GitHub Actions workflow (.github/workflows/dotnet.yml) that:

1. Builds the application for Windows x64 in Release configuration.
2. Publishes a self-contained single-file executable.
3. Uploads build artifacts to GitHub Actions.

Releases

Push a version tag to create an official GitHub Release with the compiled executable:

git tag v1.2.0
git push origin v1.2.0

The tag version (e.g. 1.2.0) is automatically injected into the assembly version and used as the release name.

Build Metadata

The CI pipeline embeds git commit SHA, branch/tag name, and build date into the assembly. This information is displayed in the Help > About dialog at runtime.