src/shared/README.md

Shared Modules

This folder contains modules used by both main and renderer processes.

Files

security-core.js

Enterprise-grade security system with comprehensive protection.

Features

1. Input Validation

• Path traversal detection
• Malicious pattern checking
• Length validation

2. Path Safety

• Forbidden directory protection (Windows, System, etc.)
• Whitelist validation
• Workspace folder support

3. Symlink Protection

• Symlink detection
• Circular reference prevention
• Depth limiting

4. File Validation

• Extension whitelist
• Size limits (min/max)
• Content verification

5. Integrity Verification

• SHA-256 hash calculation
• File tampering detection
• Cache management

6. Rate Limiting

• Operation throttling
• Time-window based limits
• Abuse prevention

7. ReDoS Protection

• Regex timeout enforcement
• Pattern execution monitoring
• Safe regex execution

Usage

import { SecurityManager } from './security-core.js';

const security = new SecurityManager({
  MAX_FILE_SIZE: 10 * 1024 * 1024,
  ALLOWED_EXTENSIONS: ['.js', '.ts', '.py'],
  EXTRA_ALLOWED_DIRS: ['/path/to/allowed/dir']
});

// Validate and read file
const result = await security.secureReadFile(filePath);

// Get statistics
const stats = security.getSecurityStats();

// Export audit log
const log = security.exportSecurityLog();

Custom Error Classes

• SecurityError - Base security error
• PathTraversalError - Path attack detected
• SymlinkError - Symlink violation
• FileValidationError - File validation failed
• ReDoSError - Regex timeout
• RateLimitError - Rate limit exceeded

Configuration

All security settings are configurable:

const SECURITY_CONFIG = {
  MAX_PATH_LENGTH: 260,
  MAX_FILE_SIZE: 10 * 1024 * 1024,
  ALLOWED_EXTENSIONS: [...],
  FORBIDDEN_PATHS: [...],
  MAX_OPERATIONS_PER_MINUTE: 500,
  // ... more settings
};

Adding New Validations

1. Create validation method in SecurityManager class
2. Add to validateFile() pipeline
3. Add custom error class if needed
4. Update configuration