# WSSSH: Warp-Powered Stefy's Spatial Secure Hyperdrive - Future Enhancements Roadmap

## Recently Completed (v1.7.0) - Major C Implementation Transition
- [x] **Complete Architecture Migration**: Transitioned from Python/PyInstaller to native C implementation
  - Replaced Python wssshd with high-performance C daemon (`wssshd2/`)
  - Eliminated Python runtime dependencies for server component
  - Maintained full backward compatibility for client tools
  - Improved performance and reduced resource usage

- [x] **SQLite Database Integration**: Persistent user management with secure storage
  - Automatic database creation and schema management
  - User authentication with password hashing
  - Admin user role management
  - Security warnings for default credentials
  - Database-backed session management

- [x] **Embedded Web Interface**: Self-contained web server with no external dependencies
  - HTML/CSS/JavaScript assets embedded in binary
  - User management interface with add/edit/delete functionality
  - Real-time terminal interface with fullscreen support
  - Responsive Bootstrap-based design
  - AJAX-powered dynamic content updates

- [x] **Enhanced Security Features**:
  - Automatic security warnings for default admin credentials
  - Proper session management with configurable timeouts
  - Input validation and bounds checking
  - Secure password storage with hashing
  - Admin role-based access control

- [x] **Professional ASCII Art**: Startup banner with project branding
- [x] **Comprehensive Debug Options**: Database, web, and general debug logging
- [x] **Smart Directory Selection**: Automatic root vs user directory detection
- [x] **Updated Debian Packaging**: Modified for C binary with proper dependencies
- [x] **Documentation Updates**: Comprehensive updates for C implementation

## Recently Completed (v1.6.5)
- [x] **Flexible Data Encoding Support**: New `--enc` option for wsssht with multiple encoding modes
  - `--enc hex`: Hexadecimal encoding of binary data (default, backward compatible)
  - `--enc base64`: Base64 encoding of binary data for better efficiency
  - `--enc bin`: Direct binary data transmission without encoding
  - Configuration file support with `enc = hex` option in `wsssht.conf`
  - Automatic encoding negotiation between wsssht and wssshc clients
  - Updated tunnel request messages to include encoding specification
  - Enhanced data channel message processing for all encoding formats
  - Maintained backward compatibility with existing hex encoding

## Recently Completed (v1.6.2)
- [x] **Tunnel Close Forwarding**: Critical fix for tunnel closure synchronization between wssshc, server, and wsssht
- [x] **Web Terminal JavaScript Fixes**: Comprehensive fixes for web interface terminal functionality
- [x] **Fullscreen Terminal Support**: Enhanced web terminal with fullscreen toggle functionality
- [x] **Logo Serving Path**: Fixed web interface logo loading from correct directory

## Recently Completed (v1.6.1)
- [x] **Major Code Refactoring**: Complete modularization of `wsssht.c` for improved maintainability
  - Split monolithic 2769-line `wsssht.c` into modular components in `libwsssht/` directory
  - Created `utils.h/c`: Utility functions (print_usage, parse_connection_string, parse_args)
  - Created `modes.h/c`: Mode-specific functions (bridge, script, daemon modes)
  - Created `threads.h/c`: Thread-related functions and structures
  - Created `wsssht.h`: Main header with includes and declarations
  - Reduced main `wsssht.c` to 674 lines (75% size reduction)
  - Updated `configure.sh` and `Makefile` to handle new modular structure
  - Maintained 100% backward compatibility and functionality
  - Improved developer experience with logical code grouping
  - Easier debugging, testing, and feature development

## Recently Completed (v1.6.0)
- [x] **Multiple Operating Modes**: Complete implementation of various operating modes for wsssht
  - **Interactive Mode**: Standard interactive SSH/SCP sessions (default)
  - **Silent Mode**: Suppresses all informational output for automation
  - **Bridge Mode**: JSON-based communication over stdin/stdout for programmatic use
  - **Script Mode**: JSON protocol with status updates and command processing
  - **Daemon Mode**: Lazy tunnel initialization for resource efficiency
- [x] **Bridge Mode Implementation**: JSON stdin/stdout interface
  - Real-time JSON status updates during tunnel establishment
  - Command processing from stdin with JSON responses
  - Structured error reporting and connection status
  - Perfect for programmatic integration and automation
- [x] **Script Mode Implementation**: JSON protocol for scripting
  - Periodic status updates (every 30 seconds)
  - Script command processing (`status`, `quit`, `exit`)
  - Timestamped events for monitoring and logging
  - JSON-formatted output for easy parsing by scripts
- [x] **Daemon Mode Implementation**: Lazy tunnel initialization
  - Waits for first connection attempt before establishing tunnel
  - Resource-efficient operation with on-demand tunnel creation
  - Seamless transition to normal operation after first connection
  - Reduced resource usage for intermittent connections
- [x] **Configuration Support**: Extended config file support for new modes
  - `mode` and `daemon` options in `[wsssht]` section
  - Command-line options override config file values
  - Backward compatibility with existing configurations
- [x] **Command-Line Interface**: Extended CLI with new operating mode options
  - `--mode` option with values: interactive, silent, bridge, script
  - Shortcut options: `--silent`, `--bridge`, `--script`, `--daemon`
  - Comprehensive help text and usage examples
  - Updated man pages with new option documentation
- [x] **Documentation Updates**: Comprehensive documentation for new features
  - Updated README.md with operating mode descriptions and examples
  - Updated CHANGELOG.md with detailed feature descriptions
  - Updated man pages with new option documentation
  - Updated configuration examples

## Recently Completed (v1.5.0)
- [x] **Universal Tunneling Architecture**: Complete implementation of advanced tunneling system
  - Added `--tunnel` option to wsssh and wsscp for data channel transport specification
  - Added `--tunnel-control` option to wsssh, wsscp, and wssshc for control channel transport specification
  - Added `--service` option to wsssh and wsscp for service type specification (default: "ssh")
  - Implemented transport definitions with `is_relay` property and weight-based selection
  - Added WebSocket transport with `is_relay=true` as the primary transport implementation
  - Created comprehensive transport selection logic with weight-based prioritization
  - Implemented "any" transport option that expands to all available transports
  - Added transport list expansion function for proper "any" option handling
  - Enhanced configuration system with new tunneling options in config files
  - Updated server-side architecture with new tunnel attributes and transport handling
  - Modified client-side C implementations with new command-line options
  - Updated all man pages with comprehensive tunneling option documentation
  - Fixed critical transport list expansion for "any" option functionality
- [x] **PyInstaller Template Loading Fix**: Fixed Flask template loading in frozen executables
  - Added missing `sys` import to `wsssd/web.py` for frozen executable detection
  - Implemented proper template and static folder configuration for PyInstaller bundles
  - Added `app.template_folder` and `app.static_folder` configuration for frozen executables
  - Fixed template loading issues when running wssshd as a standalone executable
  - Ensured web interface works correctly in both development and production environments

## Recently Completed (v1.4.9)
- [x] **PyInstaller Build Issues**: Critical fixes for frozen application deployment
  - Fixed missing `websockets` import in `wsssd/server.py` causing "name 'websockets' is not defined" error
  - Resolved asyncio runtime warnings by properly awaiting cancelled tasks in shutdown handling
  - Fixed global variable sharing issue in frozen application by passing server password as parameter to websocket handler
  - Improved WebSocket handler signature compatibility with `functools.partial` for proper function binding
- [x] **CPU Usage Optimization**: Significantly reduced CPU usage during file transfers
  - Increased select() timeout from 50ms to 200ms in tunnel forwarding threads
  - Reduced polling frequency by 75% to minimize CPU overhead during data transfers
  - Maintained responsiveness while dramatically improving efficiency for bulk transfers
- [x] **Multi-Core CPU Utilization**: Enhanced thread distribution across CPU cores
  - Implemented CPU affinity management for tunnel forwarding threads
  - Added round-robin CPU core assignment to distribute load across available cores
  - Improved parallel processing capabilities for multiple concurrent tunnels

## Recently Completed (v1.4.8)
- [x] **Critical SSL Connection Stability Issues**: Comprehensive SSL error handling and connection resilience improvements
  - Fixed WebSocket frame sending failures that caused connection drops
  - Added detailed SSL error reporting with specific error codes and descriptions
  - Implemented automatic retry logic for transient SSL errors (SSL_ERROR_WANT_READ/WRITE)
  - Added 5-second timeout protection for SSL read operations to prevent indefinite hangs
  - Enhanced connection state validation before SSL operations
  - Improved WebSocket frame transmission with retry mechanisms and partial write handling
  - Applied improvements to all three C tools (wssshc, wsssh, wsscp)
- [x] **Documentation Updates**: Updated CHANGELOG.md, README.md, DOCUMENTATION.md, and TODO.md for version 1.4.8
- [x] **Comprehensive Documentation Review**: Carefully reviewed all documentation files and updated with current features
  - Updated version references from 1.4.0 to 1.4.8 throughout documentation
  - Added documentation for new --dev-tunnel option in wsssh and wsscp
  - Added documentation for --help option in all tools
  - Updated project structure to reflect current codebase
  - Added missing configuration file references
  - Updated debug mode examples with new options
  - Enhanced feature descriptions with recent improvements

## Recently Completed (v1.4.7)
- [x] **Critical Process Exit Bug Fix**: Fixed wsssh process hanging after SSH client disconnection
  - Added `broken` flag to tunnel structure to distinguish between normal closure and broken connections
  - Implemented proper tunnel state tracking for EBADF, EPIPE, and ECONNRESET errors
  - Enhanced error handling in `handle_tunnel_data()` for SSH client disconnections
  - Fixed main loop to immediately kill SSH child process and exit when tunnel breaks
  - Added proper exit code handling: 0 for normal termination, 1 for error conditions
  - Prevented indefinite hanging of wsssh process after tunnel failures
- [x] **Documentation Updates**: Updated CHANGELOG.md, README.md, DOCUMENTATION.md, and TODO.md for version 1.4.7

## Recently Completed (v1.4.6)
- [x] **Code Refactoring and Library Architecture**: Major refactoring to eliminate code duplication
  - Created shared libraries: `wssshlib.h/.c`, `websocket.h/.c`, `wssh_ssl.h/.c`, `tunnel.h/.c`
  - Extracted ~1500+ lines of duplicate code between wsssh.c and wssshc.c
  - Improved maintainability and code organization with modular architecture
  - Enhanced build system with proper library dependencies
- [x] **SSH Tunneling Improvements**: Enhanced SSH tunnel handling and error recovery
  - Added specific handling for EBADF (Bad file descriptor) errors
  - Improved error handling in handle_tunnel_data for SSH client disconnections
  - Removed aggressive socket validation causing SSH client disconnections
  - Fixed SSH client socket invalidation issue in handle_tunnel_data
  - Added missing SSH client accept() logic in wsssh socket handling
  - Fixed SSH tunneling timing issue with proper data buffering
  - Implemented correct SSH tunneling architecture for wssshc
  - Fixed critical architectural issue in wssshc tunnel handling
  - Enhanced error handling for broken SSH connections
- [x] **Port Option Behavior Correction**: Fixed critical port option behavior
  - `-p`/`-P` options now correctly specify wssshd server port (not SSH/SCP server port)
  - Removed misleading "passed through to ssh/scp" documentation
  - Updated help text to clearly indicate port options are consumed by wsssh/wsscp
  - Fixed argument parsing to properly handle wssshd server port specification
- [x] **Help Documentation Cleanup**: Fixed duplicate "Options:" sections in help output
  - Removed duplicate "Options:" sections from both wsssh and wsscp help
  - Consolidated all options into single, clean "Options:" section
  - Improved user experience with clearer documentation
- [x] **Documentation Updates**: Updated CHANGELOG.md, README.md, DOCUMENTATION.md, and man pages for version 1.4.6

## Recently Completed (v1.4.5)
- [x] **Python Implementation Removal**: Removed Python implementations of wssshc, wsssh, and wsscp
  - Deleted wssshc.py, wsssh.py, and wsscp.py files
  - Removed pyinstaller commands from build.sh for these tools
  - Updated Debian packaging to exclude Python script installations
  - Cleaned up documentation and project structure references
  - Maintained C implementations in wssshtools/ directory

## Recently Completed (v1.4.4)
- [x] **Dynamic Terminal Sizing**: Implemented proper terminal dimension calculation and transmission
- [x] **Terminal Resize Support**: Added real-time terminal resizing when browser window changes
- [x] **Force Echo Mode**: SSH connections now force echo mode for better visibility
- [x] **Logrotate Integration**: Complete logrotate configuration for wssshd and wssshc daemon processes
- [x] **Enhanced Logging**: Proper log file management with rotation policies and permissions
- [x] **Backend Terminal API**: Added resize endpoint and SIGWINCH signal handling
- [x] **Init Script Updates**: Modified init scripts to redirect output to managed log files
- [x] **Documentation Updates**: Updated CHANGELOG.md, README.md, and DOCUMENTATION.md for version 1.4.4

## Recently Completed (v1.4.3)
- [x] **Ping Frame Parsing Fix**: Fixed WebSocket ping frame handling in wsssh.c
- [x] **WebSocket Reconnection Logic**: Added automatic reconnection for wsssh.c and wsscp.c
- [x] **Professional Watchdog Scripts**: Implemented wssshd-watchdog and wssshc-watchdog for high availability
- [x] **Enhanced Init Scripts**: Updated init scripts to use watchdog for daemon supervision
- [x] **Build System Fixes**: Fixed --server-only option and Debian package build issues
- [x] **Debian Package Improvements**: Resolved Makefile syntax errors, compatibility conflicts, and directory creation issues
- [x] **Binary Reuse Logic**: Implemented intelligent reuse of existing wssshd binaries to avoid unnecessary rebuilds
- [x] **Documentation Updates**: Updated CHANGELOG.md, README.md, and DOCUMENTATION.md for version 1.4.3

## Web Interface Improvements
- [ ] **Better web terminal interface and functionality**
  - Improve xterm.js integration and responsiveness
  - Add support for terminal themes and customization
  - Add copy/paste functionality improvements
  - Implement better error handling for terminal sessions

## Advanced Tunneling Features
- [ ] **Additional transport protocols**
  - Implement additional transport protocols beyond WebSocket
  - Add transport negotiation and fallback mechanisms
  - Support for custom transport plugins
  - Integration with popular tunneling protocols
  - Secure transport multiplexing for multiple services

## Multi-User and Group Management
- [ ] **Multi-user support with different password and web interface access**
  - Implement user groups with different access levels
  - Group-based password policies and authentication
  - Web interface user association with specific groups
  - Role-based access control (RBAC) system
  - Group-specific configuration profiles

## Resource Management and Limits
- [ ] **Active client limits per user/group**
  - Implement connection limits per user
  - Group-based resource allocation
  - Active session monitoring and management
  - Rate limiting and abuse prevention
  - Usage statistics and reporting

## Security Enhancements
- [ ] **Enhanced authentication mechanisms**
  - Two-factor authentication (2FA) support
  - Certificate-based authentication
  - Integration with external authentication providers
  - Session management and timeout policies

## Performance and Scalability
- [ ] **Performance optimizations**
  - Connection pooling and multiplexing
  - Load balancing across multiple wssshd instances
  - Database optimization for user/session management
  - Caching mechanisms for improved response times
- [ ] **Stability and performance improvements**
  - Memory usage optimization and leak prevention
  - Connection stability enhancements
  - Error recovery and automatic reconnection
  - Resource usage monitoring and limits
  - Performance profiling and bottleneck identification

## Monitoring and Logging
- [ ] **Comprehensive monitoring system**
  - Real-time metrics and dashboards
  - Detailed audit logging
  - Alert system for security events
  - Performance monitoring and profiling

## API and Integration
- [ ] **REST API development**
  - Programmatic access to tunnel management
  - Integration with CI/CD pipelines
  - Third-party tool integration
  - Webhook support for events

## Documentation and Testing
- [ ] **Enhanced documentation**
  - API documentation with examples
  - Video tutorials and guides
  - Comprehensive testing suite
  - Performance benchmarking tools

## Mobile Applications
- [ ] **Android application development**
  - Native Android app for SSH/SCP access
  - WebSocket client integration
  - Terminal emulator with touch support
  - File transfer capabilities
  - Connection management and favorites
  - Biometric authentication support
- [ ] **iOS application development**
  - Native iOS app with similar features
  - iOS-specific UI/UX optimizations
  - Integration with iOS security features

## Cross-Platform wssshc Implementations
- [ ] **Windows wssshc implementation**
  - Native Windows C/C++ client
  - Windows-specific WebSocket libraries
  - MSI installer package
  - Windows service integration
  - PowerShell/cmd integration
- [ ] **macOS (OSX) wssshc implementation**
  - Native macOS C/C++ client
  - macOS-specific optimizations
  - .pkg installer package
  - Integration with macOS Keychain
  - Native UI elements support

## Platform Support
- [ ] **Extended platform compatibility**
  - Browser extension support
  - Docker and container integration
  - Cloud platform optimizations

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## Implementation Priority

### High Priority (Next Release)
- Better web terminal interface and functionality fixes
- Active client limits per user/group
- Enhanced error handling and user feedback
- Stability and performance improvements

### Medium Priority (Future Releases)
- Additional transport protocols
- Multi-user support with different password policies
- Performance optimizations and monitoring
- Windows and macOS wssshc implementations

### Low Priority (Long-term)
- Android and iOS mobile applications
- Browser extensions
- Advanced API integrations
- Enterprise features and compliance

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## Contributing

Feel free to contribute to any of these enhancement areas. Please create an issue to discuss implementation details before starting work on major features.

For questions or suggestions, please open a GitHub issue or start a discussion.