feat: onboarding action-shellcheck

[Raj-StepSecurity]

No description provided.

[claude]

Claude finished @Raj-StepSecurity's task —— View job

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Comprehensive PR Review Complete ✅

Reviewed this action-shellcheck onboarding PR against Step Security's compliance standards.

Review Checklist

• Determine action type (node/docker/composite)
• Check license and copyright compliance
• Validate required file structure
• Review action.yaml configuration
• Analyze subscription check implementation
• Check README banner and usage examples
• Validate workflow files
• Security vulnerability scan
• Check for prohibited files/folders
• Verify dependency management

🎯 Final Assessment: APPROVED WITH MINOR CONCERNS

✅ Compliance Summary

Action Type: Composite Action ✅

• Correctly identified as composite action (action.yaml:58)

Required File Structure: ✅ PASS

• action.yaml present with correct author: "step-security" ✅
• LICENSE with both original (ludeeus) and StepSecurity copyright ✅
• SECURITY.md present ✅
• Required workflows: auto_cherry_pick.yml ✅, actions_release.yml ✅

Prohibited Files/Folders: ✅ PASS

• No FUNDING.yml, renovate.json, PULL_REQUEST.md, CHANGELOG.md ✅
• No ISSUE_TEMPLATE or .vscode folders ✅

README Compliance: ✅ PASS

• StepSecurity banner correctly implemented ✅
• All usage examples use major version (@v2) instead of full semver ✅

Subscription Check: ✅ PASS

• Correct API URL: https://agent.api.stepsecurity.io/v1/github/$GITHUB_REPOSITORY/actions/maintained-actions-subscription ✅
• UPSTREAM variable correctly matches auto_cherry_pick.yml: "ludeeus/action-shellcheck" ✅
• Proper subscription validation for private repositories ✅

Dependency Management: ✅ PASS (N/A for composite)

• No package.json required for composite actions ✅
• No dist folder required ✅

🔍 Security Analysis

Download Security: ✅ PASS

• ShellCheck binary downloaded from official GitHub releases ✅
• URL construction uses proper input validation ✅
• Download limited to specific, verified release artifacts ✅

Input Validation: ⚠️ MINOR CONCERN

• Most inputs properly quoted and validated ✅
• Some shell expansions could benefit from additional quoting:
  • Line 139: options+=("-S ${INPUT_SEVERITY}") - should quote expansion
  • Line 159-172: Path iteration could be more robust with proper IFS handling

Command Injection: ✅ PASS

• No eval/exec usage in main logic ✅
• ShellCheck options properly handled through arrays ✅
• File paths correctly quoted in find commands ✅

Third-party Actions: ✅ PASS

• Uses only GitHub-official actions (checkout) and Step Security maintained workflows ✅

🧪 Additional Test Files Assessment

The PR includes comprehensive test files in testfiles/ directory covering:

• Various shell file extensions (.bash, .sh, .ksh, .zsh) ✅
• Ignore path testing ✅
• Scandir functionality ✅
• Edge cases with spaces in filenames ✅

📄 Extra Workflow Files

Additional Test Workflows: ✅ ACCEPTABLE

• Multiple test workflows present (additional_files.yml, check_together.yml, etc.)
• These appear to be comprehensive integration tests for the action ✅
• All follow proper security practices ✅

🏁 Recommendation

APPROVE - This PR successfully implements a compliant Step Security maintained action with proper:

• File structure and naming conventions
• Security controls and subscription checking
• Input validation and safe shell practices
• Comprehensive testing coverage

Minor Security Enhancement (Optional):
Consider adding additional quoting around shell variable expansions in lines 139, 159-172 for defense-in-depth, though current implementation appears secure in context.

The action is ready for production use and meets all Step Security compliance requirements.

[claude]

Claude finished @Raj-StepSecurity's task —— View job

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Step Security Action Review

Comprehensive review completed for PR #2 - action-shellcheck onboarding.

Todo List:

• Determine action type (node/docker/composite)
• Check licensing and authorship requirements
• Verify required file structure
• Review subscription check implementation
• Check for security vulnerabilities
• Validate README.md requirements
• Check for forbidden files/folders
• Verify workflow files
• Review type-specific requirements

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✅ PASSES - Action Requirements Met

Action Type: Composite Action ✓

✅ General Requirements - All Met:

• License: ✓ MIT license present with both original author (ludeeus) and Step Security copyright
• Author: ✓ action.yaml:2 shows author: "step-security"
• SECURITY.md: ✓ Present with correct Step Security email
• FUNDING.yml: ✓ Not present (correctly absent)
• Forbidden files: ✓ None found (renovate.json, PULL_REQUEST.md, ISSUE_TEMPLATE, CHANGELOG.md, .vscode all absent)

✅ Required Workflows:

• auto_cherry_pick.yml: ✓ Present with correct upstream config
• actions_release.yml: ✓ Present and properly configured

✅ README.md Requirements:

• Banner: ✓ Step Security maintained action banner present on line 1
• Version usage: ✓ All examples use @v2 (major version only, not full semver)

✅ Subscription Check Implementation:

• API URL: ✓ Correctly calls https://agent.api.stepsecurity.io/v1/github/$GITHUB_REPOSITORY/actions/maintained-actions-subscription
• Upstream variable: ✓ Correctly set to "ludeeus/action-shellcheck" matching auto_cherry_pick.yml (original-owner: "ludeeus" + repo-name: "action-shellcheck")
• Logic: ✓ Free for public repos, subscription check for private repos, proper error handling

✅ Composite Action Specific:

• Action pinning: ✓ No external actions used besides internal steps
• Shell specification: ✓ All steps properly specify shell: bash

🔒 Security Analysis - Clean

No security vulnerabilities found:

• ✓ No hardcoded secrets or credentials
• ✓ Safe parameter handling with proper quoting
• ✓ Input validation and sanitization present
• ✓ Subscription check uses HTTPS with proper timeout
• ✓ Test files contain only benign shell scripts and C code
• ✓ No command injection vectors identified
• ✓ Proper file path handling in find operations

📋 Code Quality Notes

Strengths:

• Well-structured composite action with clear step separation
• Comprehensive input validation and error handling
• Good documentation with usage examples
• Proper glob handling for file discovery
• Supports multiple shells and file types

Minor Observations:

• Action downloads shellcheck binary at runtime (standard practice for this tool)
• Extensive find command with many file patterns (necessary for comprehensive shell script detection)

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Overall Assessment: ✅ APPROVED - This action fully complies with Step Security's onboarding requirements and security standards.