Enhance CDN Middleware: Secure Path Validation and Robust Rate Limiting

[tomaszlt]

Enhance CDN Middleware: Secure Path Validation and Robust Rate Limiting

Description

Summary of Work

Overview

This pull request introduces comprehensive improvements to our CDN file serving infrastructure, focusing on security, flexibility, and performance.

Key Objectives

• Implement robust path validation to prevent directory traversal attacks
• Create a flexible rate limiting mechanism to protect against potential abuse
• Improve middleware configuration and error handling

Technical Enhancements

Security Improvements

• Advanced file path validation prevents unauthorized file access
• Normalized path checking prevents directory traversal exploits
• Configurable rate limiting protects against potential DoS attacks

Middleware Capabilities

• Dynamic rate limiting configuration
• Granular control over request throttling
• Standardized error responses for rate limit and path validation scenarios

Configuration Flexibility

• Easily customizable rate limit windows
• Configurable request thresholds per IP
• Centralized CDN configuration management

Benefits

• Increased security for file serving infrastructure
• More resilient and configurable middleware
• Improved protection against potential security vulnerabilities
• Streamlined configuration management

Architectural Considerations

• Maintains existing project structure
• Minimal dependencies added
• Backward compatible with current implementation

Future Roadmap

• Potential expansion of rate limiting strategies
• Additional security hardening
• Performance optimization of validation mechanisms

Changes Made

• Implemented secure path validation middleware
• Created configurable rate limiting mechanism
• Enhanced error handling and security checks
• Updated configuration management for CDN file serving
• Improved type safety in TypeScript middleware
• Normalized path validation logic

Tests and Verification

• Comprehensive test coverage for path validation
• Verified rate limiting configuration scenarios
• Tested edge cases for directory traversal prevention
• Validated error handling and response mechanisms
• Ensured compatibility with existing test suites
• Added tests for custom rate limiting configurations

PRs Merged

The following pull requests have been merged:

• #1: Implement Secure CDN Directory Restrictions from @snarf1974
• #2: Implement Robust Rate Limiting Middleware for CDN Protection from @Santix1234
• #3: Implement Secure CDN Directory Restrictions from @Santix1234
• #4: Implement Robust Rate Limiting Middleware for CDN Protection from @revonetworx
• #5: [WIP] Implement CDN Directory Restriction Middleware from @revonetworx
• #6: Implement Secure CDN Directory Restrictions from @SoYan500
• #7: Implement Robust File Path Sanitization Middleware for CDN Security from @snarf1974
• #8: Implement Secure File Path Sanitization Middleware for CDN from @parker110-crypto

Signatures

Staking Key

AjM47QweoJapLGFM8hzA8fKNmhGgswaztoXzJvXpGELr: FL1ueJqLqp1gX6CYCfeSSutWmUbzetW79y7XC1m7YZQaNGU33JJz2crGZ91FdsL6bEikkDYkejYcna3kNFEqDLzh9upaXXEdrqevoRWGc7fE92kiTdayhx5Ek9hQN5oaEZjApw6RRox1xSjqR1A9ML1BRS6g3csFqrRXJjbFKBtpsVpUmfZDuQKBjB2yKexX53VrwkucLwQt1TKnvyKhDon1n4XZ4tFfk83RJFuL9SfAaBwuZPepkbsYm56QPKwPBwg25irCgAT37ypJM2F5JenvPn2Zc5M4461rdhifLRUsJLF7AwmdRZDrtkYJsL9ZTdSDnUbGa5wPZ7dNiKj2cvGxxPJ7TL9r2xrYQxjyTbd5JwGVMTsCKAAWvs3xcq6jtVhFsveH13B8VyMnS4fi4xYNysq1vB9qbA

Public Key

HBFHRca7xjSidvQ1WLdeo7pT449dEjNgiZeR5sRNr6H4: S1jHVuL9vm4wgf8PK1Ps4e69opbtfgzstVEoXL94XfsXxrBAf9RScQZb757bAug3wFGMKtyU7HHcyiqnzDEs8DrWoF2N1EHv21UBMMXLtfW3DLdVV8rG1y7LjULafZCV5N6f3BvZT6pEg63HdmjzPje18TeY9QaCLTmaKWQQcbXqU3J8YjSxVtd8UxthHpPtwxPikchPbyLBzEcNkcXhRsRiN1DxkZMRhysztfqPEPSxQbDhHTQrYMxGUn39uYbQULwZvMzg6rdz62odoU2Lei63CHdrEgrvvRoSP7HCXVUNU4bNhee265vx6i1821bdhPPXXYuh5SCDpcf2RpYneMno9uhk127ojPSmfxfPTUmnvgvyapaPQR7LAcHFMQE6yDKgyrciAeuPg8hNDrWEQtMaPb4G5tmPCQ