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DevSkim

DevSkim is a framework of IDE extensions and language analyzers that provide inline security analysis in the dev environment as the developer writes code. It has a flexible rule model that supports multiple programming languages. The goal is to notify the developer as they are introducing a security vulnerability in order to fix the issue at the point of introduction, and to help build awareness for the developer.

Features

Built-in rules, and support for writing custom rules
Cross-platform CLI built on .NET for file analysis
IDE plugins for Visual Studio and Visual Studio Code built on Language Server Protocol
IntelliSense error "squiggly lines" for identified security issues
Information and guidance provided for identified security issues
Optional suppression of unwanted findings
Support for JSONPath, XPATH and YmlPath based rules
Broad language support including: C, C++, C#, Cobol, Go, Java, Javascript/Typescript, Python, and more.

Repository Structure

This repository contains DevSkim and its official supported plugins. Issues and contributions are accepted here for:

DevSkim Library
- Location: ./DevSkim-DotNet/
DevSkim CLI
- Location: ./DevSkim-DotNet/Microsoft.DevSkim.CLI/
DevSkim Visual Studio Extension
- Location: ./DevSkim-DotNet/Microsoft.DevSkim.VisualStudio/
DevSkim Visual Studio Code Plugin
- Location: ./DevSkim-VSCode-Plugin/
Default Rules and Guidance
- Location: ./rules/default/

Official Releases

The C# library is available on NuGet as Microsoft.CST.DevSkim.

The .NET Global Tool is available on NuGet as Microsoft.CST.DevSkim.CLI.

The Visual Studio extension is available in the Visual Studio Marketplace.

The Visual Studio Code plugin is available in the Visual Studio Code Marketplace.

DevSkim is also available as a GitHub Action to integrate with the GitHub Security Issues pane.

Platform specific binaries of the DevSkim CLI are also available on our GitHub releases page.

Installation

Visual Studio Extension

The DevSkim Visual Studio extension can be downloaded and installed from the Visual Studio Marketplace.

Alternatively, in Visual Studio, open the Extension Manager (Menu: Extensions -> Manage Extensions), search for "Microsoft DevSkim", select the entry, and click on the Download button.

Visual Studio Code Plugin

The DevSkim Visual Studio Code plugin can be downloaded and installed from the Visual Studio Code Marketplace.

Alternatively, In VS Code, launch the Quick Open bar (Ctrl + P), and run the following command: ext install ms-cst-e.vscode-devskim

Command Line Interface

.NET Core Global Tool (Recommended)

If you already have the .NET SDK installed, you can install the DevSkim CLI as a dotnet global tool by running the following from a command line:

dotnet tool install --global Microsoft.CST.DevSkim.CLI

This will add DevSkim to your PATH. You can then invoke devskim from a command line.

.NET Core App (Self Contained)

Download the platform specific binary archive for your system (Windows, Mac OS, Linux) from the releases page. Extract the archive, navigate to the DevSkim folder from a command line, and invoke devskim or devskim.exe.

.NET Core Runtime Dependent App

First download and install the Latest .NET runtime. Then download the DevSkim netcoreapp archive from the releases page. Extract the archive, navigate to the DevSkim folder from a command line, and invoke dotnet devskim.dll.

Build from Source

For more information, see the wiki page about how to Build from Source.

Basic Usage

DevSkim CLI

devskim analyze --source-code c:\path\to\FilesToAnalyze

For more information, see the wiki page about the Command Line Interface.

Visual Studio Extension / Visual Studio Code Plugin

Once the DevSkim plugin is installed and enabled, simply write some code, and feedback will be provided inline if issues are detected.

Writing Rules

Please see Writing Rules for instructions on how to author rules.

Contributing

This project welcomes contributions and suggestions. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.

When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

For more information, please see How to Contribute.

Reporting Issues