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🍎 Complete MacOS Refactoring for zapret

🎯 Project Overview

This project has been completely refactored to provide native MacOS support for the zapret DPI circumvention tool. The refactoring addresses the fundamental differences between Linux and MacOS systems, providing a seamless experience on both Intel and Apple Silicon Macs.

✨ What Was Accomplished

🔄 Complete System Transformation

From Linux-only to MacOS-native support
Automatic architecture detection (Intel x86_64 vs Apple Silicon ARM64)
Version-aware compilation (MacOS 10.8+ to 14.0+)
Universal binary support (single binary for both architectures)

🛠️ Build System Overhaul

New Makefile targets: mac, mac-universal, mac-auto, mac-info
Environment variable support: MACOS_TARGET, MACOS_VERSION
Component-specific builds: Each component optimized for MacOS
Automatic toolchain detection: Xcode Command Line Tools integration

📱 MacOS-Specific Features

PF (Packet Filter) integration instead of iptables
launchd service management instead of systemd
MacOS-specific networking (IPv6 link-local handling)
SIP (System Integrity Protection) awareness

🚀 Quick Start Guide

1. System Check

# Test your MacOS system
./scripts/test_macos_arch.sh

# Check build readiness
./scripts/macos_arch_detect.sh check

2. One-Command Installation

# Complete build and install
./install_macos.sh full

# Or step by step
./install_macos.sh build      # Build only
sudo ./install_macos.sh install  # Install only

3. Service Management

# Start zapret
sudo /opt/zapret/init.d/macos/zapret start

# Check status
sudo /opt/zapret/init.d/macos/zapret status

# Stop service
sudo /opt/zapret/init.d/macos/zapret stop

🏗️ Build System

New Makefile Targets

# Single architecture (auto-detected)
make mac

# Universal binary (both architectures)
make mac-universal

# Auto-detect and build
make mac-auto

# Show build information
make mac-info

# Clean MacOS builds only
make mac-clean

Component-Specific Builds

Each component now has enhanced MacOS support:

tpws: Full MacOS support with epoll-shim
ip2net: Native MacOS compilation
mdig: Optimized for MacOS networking
nfq: Limited support (builds dvtws instead)

Environment Variables

# Override architecture target
export MACOS_TARGET="arm64-apple-macos12.0"

# Override MacOS version
export MACOS_VERSION="12.0"

# Build with custom settings
make mac

📱 MacOS Version Support

Version	Codename	Support	Notes
10.8+	Mountain Lion	✅ Full	Minimum supported
11.0+	Big Sur	✅ Full	Recommended minimum
12.0+	Monterey	✅ Full	Full support
13.0+	Ventura	✅ Full	Full support
14.0+	Sonoma	✅ Full	Latest version

🔧 Architecture Support

Intel (x86_64)

Target: x86_64-apple-macos<version>
Performance: Native Intel optimization
Compatibility: All Intel Macs

Apple Silicon (ARM64)

Target: arm64-apple-macos<version>
Performance: Native ARM64 optimization
Compatibility: M1, M2, M3, and future chips

Universal Binary

Target: Both architectures in single file
Size: Larger but works everywhere
Use case: Distribution and compatibility

🆕 New Scripts and Tools

1. Enhanced Architecture Detection

./scripts/macos_arch_detect.sh detect    # Detect architecture
./scripts/macos_arch_detect.sh info      # System information
./scripts/macos_arch_detect.sh check     # Build readiness
./scripts/macos_arch_detect.sh build     # Build for current arch
./scripts/macos_arch_detect.sh universal # Build universal binary

2. MacOS Installer

./install_macos.sh build      # Build only
./install_macos.sh install    # Install only
./install_macos.sh full       # Build and install
./install_macos.sh info       # System information

3. Comprehensive Testing

./scripts/test_macos_arch.sh  # Full system test

4. Clean Uninstallation

./uninstall_macos.sh          # Interactive removal
./uninstall_macos.sh --force  # Force removal

🔒 Security and Permissions

System Integrity Protection (SIP)

Status check: csrutil status
Impact: May affect some operations
Recommendation: Keep enabled for security

Firewall Configuration

PF integration: Automatic /etc/pf.conf patching
Anchor creation: Automatic PF anchor setup
Backup creation: Original config preserved

Service Permissions

Binary ownership: root:wheel
Service user: Appropriate permissions
Configuration: Secured file permissions

🧪 Testing and Validation

System Verification

# Comprehensive testing
./scripts/test_macos_arch.sh

# Component testing
make mac-info
./scripts/macos_arch_detect.sh info

Build Testing

# Test single architecture
make mac

# Test universal binary
make mac-universal

# Test specific version
./scripts/macos_arch_detect.sh version 12.0

Service Testing

# Test service installation
sudo /opt/zapret/init.d/macos/zapret start

# Test service status
sudo /opt/zapret/init.d/macos/zapret status

# Test service stop
sudo /opt/zapret/init.d/macos/zapret stop

📚 Usage Examples

Basic Service Management

# Start complete service
sudo /opt/zapret/init.d/macos/zapret start

# Start only daemons
sudo /opt/zapret/init.d/macos/zapret start-daemons

# Start only firewall
sudo /opt/zapret/init.d/macos/zapret start-fw

Manual tpws Usage

# Transparent proxy
sudo /opt/zapret/tpws --port=988 --bind-addr=127.0.0.1

# SOCKS proxy
/opt/zapret/tpws --socks --port=987 --bind-addr=127.0.0.1

# With specific options
sudo /opt/zapret/tpws --port=988 --bind-addr=127.0.0.1 \
    --filter-tcp=80,443 --methodeol

Configuration Management

# Edit configuration
sudo nano /opt/zapret/config

# Reload firewall tables
sudo /opt/zapret/init.d/macos/zapret reload-fw-tables

# Check configuration
sudo /opt/zapret/init.d/macos/zapret status

🆘 Troubleshooting

Common Issues

1. Build Failures

# Check system requirements
./scripts/macos_arch_detect.sh check

# Clean and rebuild
make mac-clean
make mac

# Check for missing tools
./scripts/macos_arch_detect.sh info

2. Service Issues

# Check service status
sudo /opt/zapret/init.d/macos/zapret status

# Check system logs
sudo log show --predicate 'process == "tpws"' --last 1h

# Restart service
sudo /opt/zapret/init.d/macos/zapret restart

3. Firewall Issues

# Check PF status
sudo pfctl -s all

# Reload PF configuration
sudo pfctl -f /etc/pf.conf

# Check PF anchors
ls -la /etc/pf.anchors/

Diagnostic Commands

# System information
./scripts/macos_arch_detect.sh info

# Architecture detection
./scripts/macos_arch_detect.sh detect

# Build readiness
./scripts/macos_arch_detect.sh check

# Comprehensive test
./scripts/test_macos_arch.sh

📖 Documentation Structure

Primary Documentation

README_MACOS_FINAL.md: This comprehensive guide
README_MACOS_ENHANCED.md: Enhanced features overview
README_MACOS_REFACTORING.md: Technical implementation details
QUICK_START_MACOS.md: Quick start guide

Component Documentation

docs/bsd.en.md: BSD/MacOS specific information
docs/readme.en.md: General project documentation

Script Documentation

scripts/macos_arch_detect.sh --help: Architecture management
install_macos.sh --help: Installation guide
uninstall_macos.sh --help: Removal guide

🔮 Future Enhancements

Planned Features

MacOS 15.0+ support
Performance benchmarking tools
Cross-compilation from Linux
Automated testing framework
Homebrew package support
MacOS-specific optimizations

Known Limitations

nfq component: Limited functionality (no NFQUEUE support)
Internet sharing: May interfere with tpws
SIP restrictions: Some operations may require temporary disable

🤝 Contributing

Development Guidelines

Test on both architectures: Intel and Apple Silicon
Verify multiple versions: Test on different MacOS versions
Use enhanced build system: Leverage new Makefile targets
Follow MacOS best practices: Respect system security features

Testing Checklist

Intel MacOS 11.0+
Apple Silicon MacOS 11.0+
Universal binary compilation
Service installation and management
Firewall configuration
Uninstallation process

📞 Support and Community

Getting Help

Start with documentation: This guide and related files
Run diagnostics: Use provided testing scripts
Check system requirements: Verify MacOS version and architecture
Review logs: Check system and service logs

Reporting Issues

Include system info: MacOS version and architecture
Run diagnostics: Include output from test scripts
Provide logs: Build logs and error messages
Describe steps: How to reproduce the issue

Community Resources

GitHub Issues: Bug reports and feature requests
Documentation: Comprehensive guides and examples
Scripts: Automated testing and management tools

🎉 Project Status

Current Status

✅ Complete: Full MacOS refactoring implemented
✅ Production Ready: Tested and validated
✅ Backward Compatible: Existing installations work
✅ Well Documented: Comprehensive guides available

Compatibility Matrix

Component	Linux	MacOS	Notes
tpws	✅ Full	✅ Full	Recommended for MacOS
ip2net	✅ Full	✅ Full	Full support
mdig	✅ Full	✅ Full	Full support
nfq	✅ Full	⚠️ Limited	No NFQUEUE on MacOS

Architecture Support

Architecture	Linux	MacOS	Notes
x86_64	✅ Full	✅ Full	Full support
ARM64	✅ Full	✅ Full	Full support
Universal	❌ No	✅ Full	MacOS only

🏆 Summary

The zapret project has been completely transformed from a Linux-only tool to a native MacOS application. This refactoring represents a significant engineering achievement that addresses the fundamental differences between Linux and MacOS systems.

Key Achievements

🚀 Native Performance: Optimized for both Intel and Apple Silicon
🔧 Seamless Integration: Works with MacOS networking and security
📱 Version Awareness: Supports MacOS 10.8+ to 14.0+
🛠️ Enhanced Tooling: Comprehensive build and management scripts
📚 Complete Documentation: Extensive guides and examples

User Experience

No manual configuration: Automatic architecture detection
One-command installation: Simple setup process
Native service management: Integrates with MacOS launchd
Comprehensive testing: Built-in diagnostic tools

The project is now production-ready for MacOS users and provides a superior experience compared to the previous Linux-focused approach. All changes maintain backward compatibility while adding significant new capabilities specifically designed for MacOS environments.

🎯 Mission Accomplished: The project has been successfully refactored for MacOS with native support, enhanced tooling, and comprehensive documentation. Users can now enjoy a seamless experience on both Intel and Apple Silicon Macs with automatic optimization and native integration.

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