tengingarstjori 0.2.4

SSH Connection Manager with TUI interface

Tengingarstjóri - SSH Connection Manager

Tengingarstjóri, Icelandic for "Connection Manager", is a Python TUI based SSH connection manager that integrates seamlessly with your existing SSH configuration.

Installation

From PyPI (Recommended)

pip install tengingarstjori

From Source

git clone https://github.com/greyhoundforty/tengingarstjori.git
cd tengingarstjori
pip install -e .

Features

• 🔧 Full SSH Connection Management: Add, update, clone, and remove connections
• 📋 Flexible List Views: Table, compact, and JSON formats with tag/search/sort filtering
• ⚡ Quick Connect: tg connect <name> launches SSH and tracks usage stats
• 🚀 ProxyJump Support: Seamless bastion host and jump server configuration
• 🔀 Port Forwarding: Local and remote port forwarding with auto-corrected syntax
• 🔑 Smart SSH Key Management: Automatic key discovery and defaults
• 🔗 Non-invasive SSH Config Integration: Preserves your existing setup
• 📤 Export / Import: Backup and restore connections as JSON or SSH config format
• 🕓 History & Health Checks: tg history and tg test for usage tracking and connectivity
• 🎯 Fast CLI Commands: Intuitive tg prefix with rich output formatting

Demo

Quick Start

# Initialize Tengingarstjóri
tg init

# Add your first connection
tg add -n web-server -h 192.168.1.100 -u admin

# List connections
tg list

# Connect
tg connect web-server

# Or use SSH directly (tg manages the config)
ssh web-server

Architecture

Rather than modifying your main SSH config directly, Tengingarstjóri will:

1. Create a managed config file: ~/.ssh/config.tengingarstjori
2. Add a single line to main config to include our new file: Include ~/.ssh/config.tengingarstjori
3. Manage connections separately: All additions/changes go to the managed file
4. Preserve your existing SSH setup: Your existing SSH config remains untouched

Security

Tengingarstjóri is designed to handle sensitive SSH configuration safely:

• Restricted file permissions: connections.json, ~/.ssh/config.tengingarstjori, and the ~/.tengingarstjori/ config directory are created with 0600/0700 permissions atomically — there is no window where files are world-readable.
• SSH config injection prevention: All user-supplied fields (name, host, user, identity_file, proxy_jump, extra_options) are validated to reject newline characters before being written into the SSH config. Notes have newlines stripped. This prevents crafted values from injecting arbitrary SSH config directives.
• Non-destructive config management: Only a single Include line is added to your main ~/.ssh/config. All managed connections live in a separate file that can be inspected, backed up, or removed independently.
• Backup before changes: A backup of your main SSH config is created at ~/.ssh/config.backup before any modification.

Usage Examples

Basic Connection Management

# Add a simple connection
tg add -n web-server -h 192.168.1.100 -u admin

# Add with custom port and SSH key
tg add -n database -h db.company.com -u dbuser -p 2222 -k ~/.ssh/db_key

# Interactive mode (prompts for all options)
tg add

# Clone an existing connection with a new name
tg clone prod-web staging-web

# Connect (updates last_used / use_count, then execs ssh)
tg connect prod-web

# Preview the SSH command without connecting
tg connect prod-web --dry-run

Listing and Filtering

# Standard table view
tg list

# Detailed view showing notes, proxy, and port forwarding
tg list --detailed

# Compact and JSON formats
tg list --format compact
tg list --format json

# Filter by tag
tg list --tag production

# Full-text search across name, host, user, and notes
tg list --search bastion

# Only connections never used
tg list --unused

# Sort by last used (most recent first)
tg list --sort last-used

# Combine filters
tg list --tag production --search web --sort use-count

ProxyJump (Bastion/Jump Servers)

# Simple bastion host access
tg add -n internal-server -h 10.0.1.100 -u admin \
    --proxy-jump bastion.company.com

# Bastion with specific user and port
tg add -n secure-db -h 192.168.10.50 -u dbadmin \
    --proxy-jump "[e-mail]:2222"

# Multi-hop through multiple servers
tg add -n deep-internal -h 172.16.5.10 -u root \
    --proxy-jump "jump1.company.com,[e-mail]"

Port Forwarding

# Local port forwarding (tunnel remote service to local port)
tg add -n mysql-tunnel -h db-server.company.com -u dbuser \
    --local-forward "3306:localhost:3306"

# Multiple port forwards
tg add -n dev-services -h dev-server.company.com -u developer \
    --local-forward "8080:localhost:80,3306:db-internal:3306,5432:pg-db:5432"

# Remote port forwarding (expose local service to remote)
tg add -n demo-server -h demo.company.com -u demo \
    --remote-forward "8080:localhost:3000"

Export, Import, and Backup

# Export all connections to JSON (stdout)
tg export

# Save to a file
tg export -o backup.json

# Export as raw SSH config blocks
tg export --format ssh-config

# Export without key paths (safe to share)
tg export --strip-keys -o safe-backup.json

# Import from a backup (skip existing by default)
tg import backup.json

# Import and overwrite conflicts
tg import backup.json --strategy overwrite

# Import and auto-rename conflicts (prod-web → prod-web-2)
tg import backup.json --strategy rename

History, Health Checks, and Snippets

# Show recently used connections
tg history

# Show full history
tg history --all

# Test SSH connectivity for a single connection
tg test prod-web

# Test all connections
tg test --all

# Custom timeout
tg test prod-web --timeout 10

# Print the full SSH command for a connection
tg snippet staging-db

# Print the SSH config block
tg snippet staging-db --config

# Copy to clipboard (macOS)
tg snippet staging-db | pbcopy

Complex Real-World Examples

# Production database with full security
tg add -n prod-db \
    --host prod-db-01.internal \
    --user produser \
    --key ~/.ssh/production_key \
    --proxy-jump prod-bastion.company.com \
    --local-forward "5432:prod-db-01.internal:5432" \
    --notes "Production PostgreSQL via bastion"

# Development full-stack environment
tg add -n dev-full-stack \
    --host dev.company.com \
    --user developer \
    --proxy-jump dev-bastion.company.com \
    --local-forward "3000:localhost:3000,8080:localhost:8080,5432:localhost:5432" \
    --notes "React (3000), API (8080), PostgreSQL (5432)"

# Clone prod config to staging and update the host
tg clone prod-db staging-db
tg update staging-db --host staging-db-01.internal --non-interactive

Connection Management

# Show detailed connection information
tg show prod-db
tg show 1  # By number from list

# Update a connection (non-interactive)
tg update prod-db --host 10.0.1.20 --non-interactive

# Add or replace tags
tg update prod-db --tags "production,database" --non-interactive

# Remove a connection
tg remove prod-db
tg remove prod-db --force  # Skip confirmation

# View generated SSH configuration
cat ~/.ssh/config.tengingarstjori

CLI Commands

Connection Commands

Command	Description
tg add	Add a new SSH connection (interactive or via flags)
tg update <name>	Update fields on an existing connection
tg clone <src> <name>	Duplicate a connection with a new name
tg remove <name>	Remove a connection (--force skips confirmation)
tg show <name>	Show all fields and the generated SSH config block
tg list	List connections (--tag, --search, --sort, --unused, --format)

Workflow Commands

Command	Description
tg connect <name>	Connect via SSH; updates usage stats (--dry-run to preview)
tg snippet <name>	Print the SSH command or config block (--config)
tg history	Show recently used connections (--all, -n <limit>)
tg test <name>	Check SSH connectivity (--all, --timeout)
tg export	Export connections to JSON or SSH config (-o, -f, --strip-keys)
tg import <file>	Import connections from JSON (--strategy skip|overwrite|rename)

Setup & Maintenance Commands

Command	Description
tg init	Initialize and integrate with SSH config
tg config	Manage default settings (e.g. default SSH key)
tg validate	Check all connections for config issues
tg refresh	Regenerate ~/.ssh/config.tengingarstjori
tg fix-config	Repair corrupted Include lines
tg fix-forwards	Auto-correct old-style port forwarding syntax
tg reset	Restore original SSH config from backup

File Locations

• Main SSH config: ~/.ssh/config
• Managed config: ~/.ssh/config.tengingarstjori
• Backup: ~/.ssh/config.backup
• Tengingarstjóri data: ~/.tengingarstjori/
• Connection database: ~/.tengingarstjori/connections.json

Additional Resources

• docs/demo.md - Live executable demo document (all commands with captured output)

Development Commands

• mise run test - Run tests with coverage
• mise run lint - Check code quality
• mise run format - Format code
• mise run validate - Full validation suite
• mise run validate:quick - Quick validation

Development Workflow

# Daily development workflow
mise run validate:quick    # Quick checks before starting
# ... make changes ...
mise run test             # Run tests with coverage
mise run lint             # Check code quality
mise run validate         # Full validation before commit

Contributing

1. See the implementation phases in PHASES.md
2. Ensure all tests pass: mise run test
3. Check code quality: mise run lint
4. Run full validation: mise run validate
5. Update documentation as needed

License

This project is licensed under the MIT License - see the LICENSE file for details.

Development Environment

Created with Claude Project CLI and designed for seamless SSH workflow integration. Enhanced with comprehensive testing, code quality checks, and automated validation.

For detailed development setup, see DEVELOPMENT.md.