Initial commit: Certificate management tools
- cert-manager.py: Interactive certificate lifecycle management - generate-csr.sh: Generate CSR on remote host - sign-cert.sh: Sign certificate with UCS CA - README.md: Complete documentation - .gitignore: Ignore certificate and config files Features: - Interactive prompts with default values - Config persistence between runs - Remote CSR generation with proper server extensions - Automated CA signing - Optional certificate deployment
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225
cert-manager.py
Executable file
225
cert-manager.py
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#!/usr/bin/env python3
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"""
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Interactive Certificate Manager
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Generates CSR on remote host and signs it with UCS CA
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"""
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import os
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import sys
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import json
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import subprocess
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from pathlib import Path
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# Configuration
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CONFIG_FILE = Path.home() / '.cert-manager-config.json'
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DEFAULT_CONFIG = {
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'country': 'DE',
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'state': 'berlin',
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'locality': 'berlin',
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'organization': 'egonetix',
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'organizational_unit': 'it',
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'ca_server': '10.0.0.21',
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'validity_days': '3650',
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'last_target_host': '',
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'last_common_name': ''
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}
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def load_config():
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"""Load configuration from file or return defaults"""
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if CONFIG_FILE.exists():
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try:
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with open(CONFIG_FILE, 'r') as f:
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config = json.load(f)
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# Merge with defaults to add any new fields
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return {**DEFAULT_CONFIG, **config}
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except Exception as e:
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print(f"Warning: Could not load config: {e}")
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return DEFAULT_CONFIG.copy()
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def save_config(config):
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"""Save configuration to file"""
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try:
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with open(CONFIG_FILE, 'w') as f:
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json.dump(config, f, indent=2)
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except Exception as e:
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print(f"Warning: Could not save config: {e}")
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def prompt_with_default(prompt, default):
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"""Prompt user with a default value"""
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if default:
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user_input = input(f"{prompt} [{default}]: ").strip()
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return user_input if user_input else default
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else:
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return input(f"{prompt}: ").strip()
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def yes_no_prompt(prompt, default=True):
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"""Ask a yes/no question"""
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default_str = "Y/n" if default else "y/N"
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while True:
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response = input(f"{prompt} [{default_str}]: ").strip().lower()
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if not response:
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return default
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if response in ['y', 'yes']:
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return True
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if response in ['n', 'no']:
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return False
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print("Please answer 'y' or 'n'")
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def main():
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print("=" * 60)
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print("Interactive Certificate Manager")
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print("=" * 60)
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print()
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# Load config
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config = load_config()
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# Ask if user wants to modify defaults
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if CONFIG_FILE.exists():
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if yes_no_prompt("Do you want to modify default values?", False):
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print("\n--- Default Values Configuration ---")
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config['country'] = prompt_with_default("Country (C)", config['country'])
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config['state'] = prompt_with_default("State/Province (ST)", config['state'])
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config['locality'] = prompt_with_default("Locality (L)", config['locality'])
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config['organization'] = prompt_with_default("Organization (O)", config['organization'])
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config['organizational_unit'] = prompt_with_default("Organizational Unit (OU)", config['organizational_unit'])
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config['ca_server'] = prompt_with_default("CA Server", config['ca_server'])
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config['validity_days'] = prompt_with_default("Validity (days)", config['validity_days'])
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print()
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# Get certificate details
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print("--- Certificate Details ---")
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target_host = prompt_with_default("Target Host (IP or hostname)", config['last_target_host'])
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if not target_host:
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print("Error: Target host is required!")
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sys.exit(1)
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common_name = prompt_with_default("Common Name (FQDN)", config['last_common_name'])
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if not common_name:
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print("Error: Common name is required!")
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sys.exit(1)
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# Extract short name for filenames
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short_name = common_name.split('.')[0]
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# Ask for custom values for this certificate
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print("\n--- Certificate Subject (press Enter to use defaults) ---")
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country = prompt_with_default("Country (C)", config['country'])
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state = prompt_with_default("State/Province (ST)", config['state'])
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locality = prompt_with_default("Locality (L)", config['locality'])
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organization = prompt_with_default("Organization (O)", config['organization'])
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org_unit = prompt_with_default("Organizational Unit (OU)", config['organizational_unit'])
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validity_days = prompt_with_default("Validity (days)", config['validity_days'])
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print("\n" + "=" * 60)
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print("Summary:")
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print("=" * 60)
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print(f"Target Host: {target_host}")
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print(f"Common Name: {common_name}")
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print(f"Country: {country}")
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print(f"State: {state}")
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print(f"Locality: {locality}")
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print(f"Organization: {organization}")
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print(f"Org Unit: {org_unit}")
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print(f"Validity: {validity_days} days")
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print(f"CA Server: {config['ca_server']}")
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print(f"Output files: {short_name}.req, {short_name}-cert.pem")
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print("=" * 60)
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print()
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if not yes_no_prompt("Proceed with certificate generation?", True):
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print("Cancelled.")
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sys.exit(0)
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# Save config for next run
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config['last_target_host'] = target_host
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config['last_common_name'] = common_name
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save_config(config)
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# Get script directory
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script_dir = Path(__file__).parent.absolute()
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print("\n" + "=" * 60)
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print("Step 1: Generating CSR on target host")
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print("=" * 60)
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# Run generate-csr.sh
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generate_cmd = [
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str(script_dir / 'generate-csr.sh'),
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target_host,
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common_name,
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country,
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state,
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locality,
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organization,
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org_unit
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]
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try:
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result = subprocess.run(generate_cmd, check=True)
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except subprocess.CalledProcessError as e:
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print(f"\nError: CSR generation failed with exit code {e.returncode}")
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sys.exit(1)
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except FileNotFoundError:
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print(f"\nError: generate-csr.sh not found in {script_dir}")
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sys.exit(1)
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print("\n" + "=" * 60)
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print("Step 2: Signing certificate with CA")
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print("=" * 60)
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# Run sign-cert.sh
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req_file = f"{short_name}.req"
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sign_cmd = [
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str(script_dir / 'sign-cert.sh'),
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req_file,
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short_name,
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validity_days
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]
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try:
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result = subprocess.run(sign_cmd, check=True)
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except subprocess.CalledProcessError as e:
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print(f"\nError: Certificate signing failed with exit code {e.returncode}")
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sys.exit(1)
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except FileNotFoundError:
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print(f"\nError: sign-cert.sh not found in {script_dir}")
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sys.exit(1)
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print("\n" + "=" * 60)
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print("Step 3: Deploying certificate to target host")
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print("=" * 60)
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cert_file = f"{short_name}-cert.pem"
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if yes_no_prompt("Do you want to copy the certificate back to the target host?", True):
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try:
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# Copy certificate to target
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subprocess.run(['scp', cert_file, f'root@{target_host}:/tmp/{short_name}.crt'], check=True)
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print(f"\n✓ Certificate copied to target host at /tmp/{short_name}.crt")
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print(f" Private key is at /tmp/{short_name}.key")
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except subprocess.CalledProcessError:
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print("\nWarning: Failed to copy certificate to target host")
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print("\n" + "=" * 60)
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print("✓ Certificate Management Complete!")
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print("=" * 60)
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print(f"\nFiles created:")
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print(f" - {req_file} (Certificate Request)")
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print(f" - {cert_file} (Signed Certificate)")
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print(f"\nOn target host ({target_host}):")
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print(f" - /tmp/{short_name}.key (Private Key)")
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print(f" - /tmp/{short_name}.crt (Certificate)")
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print("\n")
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if __name__ == '__main__':
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try:
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main()
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except KeyboardInterrupt:
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print("\n\nCancelled by user.")
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sys.exit(1)
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except Exception as e:
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print(f"\nError: {e}")
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sys.exit(1)
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