TechIRCd

A modern, high-performance IRC server written in Go with comprehensive RFC compliance and advanced features.

Features

🚀 Core IRC Protocol

• Full RFC 2812 compliance (Internet Relay Chat: Client Protocol)
• User registration and authentication
• Channel management with comprehensive modes
• Private messaging and notices
• Ultra-flexible WHOIS system with granular privacy controls
• WHO and NAMES commands
• Ping/Pong keepalive mechanism

🔍 Revolutionary WHOIS System

• Granular Privacy Controls: Configure exactly what information is visible to everyone, operators, or only the user themselves
• User Modes Visibility: Control who can see user modes (+i, +w, +s, etc.)
• SSL Status Display: Show secure connection status
• Idle Time & Signon Time: Configurable time information
• Real Host vs Masked Host: Smart hostname display based on permissions
• Channel Privacy: Hide secret/private channels with fine-grained control
• Operator Information: Show operator class and privileges
• Services Integration: Account name display for services
• Client Information: Show IRC client details
• Custom Fields: Add your own WHOIS fields
• See WHOIS Configuration Guide for details

👑 Advanced Channel Management

• Operator Hierarchy: Owners (~), Operators (@), Half-ops (%), Voice (+)
• Channel Modes:
  • +m (moderated) - Only voiced users can speak
  • +n (no external messages)
  • +t (topic protection)
  • +i (invite only)
  • +s (secret channel)
  • +p (private channel)
  • +k (channel key/password)
  • +l (user limit)
  • +b (ban list)
• Extended Ban System: Support for quiet mode (~q:mask) and other extended ban types

🔐 IRC Operator Features

• Comprehensive operator authentication system
• Hierarchical Operator Classes with rank-based permissions and inheritance
• Completely Customizable Rank Names (Gaming, Corporate, Fantasy themes, etc.)
• Server Notice Masks (SNOmasks):
  • +c (connection notices)
  • +k (kill notices)
  • +o (oper notices)
  • +x (ban/quiet notices)
  • +f (flood notices)
  • +n (nick change notices)
  • +s (server notices)
  • +d (debug notices)
• Unique Operator Commands:
  • /GODMODE - ⚡ Toggle ultimate channel override powers
  • /STEALTH - 👤 Toggle invisibility to regular users
• Advanced Operator Commands: KILL, GLINE, REHASH, WALLOPS, OPERWALL
  • +n (nick change notices)
  • +s (server notices)
  • +d (debug notices)
• Operator Commands:
  • KILL - Disconnect users
  • GLOBALNOTICE - Send notices to all users
  • OPERWALL - Send messages to all operators
  • WALLOPS - Send wallops messages
  • REHASH - Reload configuration
  • TRACE - Network trace information

👤 User Modes

• +i (invisible) - Hide from WHO listings
• +w (wallops) - Receive wallops messages
• +s (server notices) - Receive server notices (opers only)
• +o (operator) - IRC operator status
• +x (host masking) - Hide real hostname
• +B (bot) - Mark as a bot
• +z (SSL) - Connected via SSL/TLS
• +r (registered) - Registered with services

🛡️ Security & Stability

• Advanced flood protection with operator exemption
• Connection timeout management
• Input validation and sanitization
• Panic recovery and error handling
• Resource monitoring and health checks
• Graceful shutdown capabilities

⚡ Unique Features (Not Found in Other IRCds)

🌟 God Mode (+G)

• Ultimate Channel Override: Join any channel regardless of bans, limits, keys, or invite-only mode
• Kick Immunity: Cannot be kicked by any user
• Mode Override: Set any channel mode without operator privileges
• Complete Bypass: Ignore all channel restrictions and limitations

👻 Stealth Mode (+S)

• User Invisibility: Completely hidden from regular users in WHO, NAMES, and WHOIS
• Operator Visibility: Other operators can still see stealth users
• Covert Monitoring: Watch channels without being detected
• Security Operations: Investigate issues invisibly

🎨 Customizable Rank Names

• Gaming Themes: Cadet → Sergeant → Lieutenant → Captain → General
• Corporate Themes: Intern → Associate → Manager → Director → CEO
• Fantasy Themes: Apprentice → Guardian → Knight → Lord → King
• Unlimited Creativity: Create any rank system you can imagine

🔍 Revolutionary WHOIS

• Granular Privacy: 15+ configurable information types
• Three-Tier Permissions: Everyone/Operators/Self visibility controls
• Custom Fields: Add your own WHOIS information
• Complete Flexibility: Control every aspect of user information display

📊 Monitoring & Logging

• Real-time health monitoring
• Memory usage tracking
• Goroutine count monitoring
• Performance metrics logging
• Configurable log levels and rotation
• Private messaging
• WHO/WHOIS commands
• Configurable server settings
• Extensible architecture
• Ping/Pong keep-alive mechanism
• Graceful shutdown handling

Requirements

• Go 1.21 or higher

Building

# Install dependencies
go mod tidy

# Build the server
go run tools/build.go -build

# Or use the traditional method
go build -o techircd

Build Options

The tools/build.go script provides several build options:

# Build and run
go run tools/build.go -run

# Run tests
go run tools/build.go -test

# Format code
go run tools/build.go -fmt

# Cross-platform builds
go run tools/build.go -build-all

# Optimized release build
go run tools/build.go -release

# Clean build artifacts
go run tools/build.go -clean

# Show all options
go run tools/build.go -help

Usage

./techircd

The server will start on localhost:6667 by default. You can configure the host and port in config.go.

Configuration

Edit config.go to customize:

• Server host and port
• Server name and description
• Maximum connections
• Ping timeout
• Message of the Day (MOTD)

Connecting

You can connect using any IRC client:

/server localhost 6667

Or use the included test client:

go run test_client.go

Architecture

• main.go - Entry point and server initialization
• server.go - Main IRC server implementation with concurrent connection handling
• client.go - Client connection handling and state management
• channel.go - Channel management with thread-safe operations
• commands.go - IRC command implementations (NICK, USER, JOIN, PART, etc.)
• config.go - Server configuration structure
• test_client.go - Simple test client for development