rhysd/actionlint

Features

• Workflow Linters - Provides comprehensive static analysis of workflow files for syntax, expressions, and security issues.
• Shell Script Linters - Integrates external checking tools to identify execution errors and syntax bugs within inline shell scripts.
• Graph Analysis Tools - Analyzes the job dependency graph to detect invalid references or circular dependencies.
• CI CD Pipelines - Automates the verification of CI/CD workflow files to prevent broken deployments.
• Shell Script - Identifies security vulnerabilities where untrusted inputs are passed into inline shell commands.
• GitHub Configuration Audits - Audits GitHub workflows for hardcoded credentials and potential script injection vulnerabilities.
• Abstract Syntax Tree Parsing - Converts workflow configuration files into a structured syntax tree to identify and report structural or formatting errors.
• Linters - Provides a specialized linter to verify schema adherence and anchor resolution for YAML automation files.
• Workflow Configuration Validators - Checks GitHub Actions YAML configuration files for syntax errors and structural issues.
• Workflow Linters - A static analysis tool that validates the syntax and logic of GitHub Actions workflow files.
• Expression Type Resolution - Performs strict type checking on expression placeholders to ensure variables and functions use compatible data types.
• CI Configuration Validators - Validates job dependencies and trigger events within continuous integration configurations.
• Taint Analysis Engines - Uses taint analysis to track untrusted inputs into shell commands and detect script injection vulnerabilities.
• Reference Anchors - Evaluates YAML anchors and aliases to ensure the resulting expanded configuration is valid and error-free.
• Automated Linting Integrations - Enables automated linting checks within continuous integration pipelines and pre-commit hooks.
• Environment Variable Validation - Ensures environment variable names do not contain invalid characters like equals signs or spaces.
• Syntax Validators - Checks the syntax of schedule triggers to ensure they follow the valid CRON format.
• Syntax Validators - Scans path and reference glob filters for syntax errors to ensure correct file matching.
• IDE Real-time Feedback - Reports analysis results and remediation guidance in real time within supported text editors.
• Shell Scripting Linters - Integrates with external shell scripting linters to detect bugs and syntax errors in inline commands.
• Environment Requirement Validators - Specifies expected runner labels and configuration variables to ensure files align with the target environment.
• Reusable Workflow Validators - Checks the syntax, input types, and secret requirements for both calling and called workflows.
• Workflow Event Triggers - Verifies webhook event names, activity types, and the correct use of complementary filters.
• Script Security Auditors - Checks inline scripts within workflow commands for syntax errors and script injection vulnerabilities.
• Abstract Syntax Tree Parsers - Implements a parser that transforms YAML workflow text into a structured syntax tree for deep logic analysis.
• Hardcoded Credential Detection - Scans configuration files for plain-text secrets and passwords to prevent accidental security leaks.
• Usage Validators - Checks that action references are correctly formatted and that all required inputs are provided.
• Deprecation Management - Identifies the use of deprecated commands and action inputs to ensure compatibility with current standards.
• Identifier Uniqueness Verifiers - Verifies that job and step identifiers are unique within the configuration to prevent execution conflicts.
• Matrix Configuration Validators - Ensures exclude values exist in the matrix and identifies duplicate variations of matrix values.
• Metadata Schema Validations - Validates action inputs and outputs by comparing workflow usage against defined metadata specification files.
• Graph Validation - Verifies job dependency graphs to detect circular references and undefined job identifiers.
• Static Logic Analyzers - Detects constant conditions in logic statements that cause workflow steps to always run or never run.
• Static Type Checking - Ensures that inputs, outputs, and context variables in workflows use compatible data types.
• Action Metadata Validators - Verifies that action inputs and outputs match metadata file definitions to ensure strict typing.

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