Configure Secure CDN Root Directory with Robust Initialization

[riksnelders]

Configure Secure CDN Root Directory with Robust Initialization

Description

Task

Configure CDN root directory for file storage

Acceptance Criteria

• CDN root directory is configurable
• Directory is created automatically if not exists
• Write permissions are validated
• Directory traversal is prevented
• Errors are handled gracefully

Summary of Work

CDN Root Directory Configuration

Changes Made

• Implemented CdnConfig class in src/config/cdn.ts
• Created a dedicated CDN root directory management utility
• Added secure directory creation and validation mechanisms

Implementation Details

1. Directory Location

   • CDN root directory set to cdn/ relative to project root
   • Uses path.resolve() to create an absolute path
   • Ensures cross-platform compatibility

2. Directory Management Methods

   • getCdnRoot(): Retrieves absolute path to CDN directory
   • ensureCdnDirectoryExists():
     • Creates directory if it doesn't exist
     • Verifies write permissions
     • Handles potential creation errors
   • isPathInCdnRoot(): Prevents directory traversal attacks

3. Security Considerations

   • Uses recursive: true for safe directory creation
   • Checks write permissions before allowing operations
   • Validates file paths against CDN root
   • Provides clear, secure error messaging

Testing Approach

• Verified directory creation logic
• Tested path validation mechanism
• Ensured error handling for permission issues

Notes

• Directory is created at runtime if not present
• Provides a centralized configuration point for CDN storage
• Supports flexible deployment across different environments

Changes Made

• Created CdnConfig class in src/config/cdn.ts
• Implemented directory creation method
• Added path validation utility
• Ensured secure directory management

Tests

• Verify CDN directory creation
• Test directory permissions
• Validate path resolution
• Check error handling for directory access

Signatures

Staking Key

44B5n7BdnyKUKWhEg7pftFHaLg2oWx1zJE3sXkiadkXV: 84DSRukZbTdxbdz3WQLUaxawfE8aYJzwporqKxMrphTGMYb3cZn7WaknfhFbZutc5UuZMH4xBCt2jZs4XoUigkDSarFu6KWk9EjGa1ukfijdY4cfcPtnCdyG6uajwSCQEDgJ9BcULDdPrXgjK9knDddksoBCMY2eGGZ9mZPKACHGkQiwMuA9fj6GZ7ULGWrJf6qfRAaeZqcgT3RGGHwgnSj4KqxQNg3vPoEKUvdXUGvmTE8FpPrQ5eLS51N6kTwdza1o81Dr1d2izzYUpvLNmrkgBxoQieMWvmvr7KyyvWfPvxRpD17jE5jg3PUYUjzJNa8xrC8oDbyhD965MvJQKpLG7FsokC6FUidWwdZVfuNWBBbX7qy3iTGoPbN92vNWVemxnq69WCkYdwEiBy2A5AgFEwDXdX1RGgfzt

Public Key

GGwS4JanHMAZwZGWGLtM1bH6vAzM2Ueu9fKNAeJH8CZt: 91vqKRtPSLJhdxvLJ4CSzpng9KFjq8rVsE3J1sNgQcFppqrLNVyyRhuEDEkvaUarZX1sQp5QoupPW8zuqv27JLNJRaHoSoFnoYzDtCPRN1hZHwbiAnhzoErNUw2qSpMqyJGDDoephVuKczvywksa6YMzT7iLVdzadYPHngHTqnCbP1TJBuaTcvSafMk1yPWFGSBAWVsmB2UArQvmT53Sx1h9CgvL9sRVUosb6jcNT7N9QmihBLwefRiT1E2Ff7GwgQZaAV9LW8UnruvPk3ZCDFMpdK1J9WAM55wBygxhNGYwS6Tpz2pLPof5tJfLoyDkYgjHnXdZi1e9BpLsrxYLa3zjHKXrBMH8ur93ZVe3cP2dB1SX5ympj54Sg84mXBFa2kym1wUSCQaGBcCj86bJNjRfvnnPCYuiapXbA