Reorganize workspace structure with system-specific cert directories and DNS automation
This commit is contained in:
root
604
scripts/cert-manager.py
Executable file
604
scripts/cert-manager.py
Executable file
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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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import getpass
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import socket
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import re
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from pathlib import Path
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# Get script directory and workspace root
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SCRIPT_DIR = Path(__file__).parent.resolve()
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WORKSPACE_ROOT = SCRIPT_DIR.parent
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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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'key_bits': '4096',
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'last_target_host': '',
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'last_common_name': ''
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}
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SYSTEM_TYPES = {
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'proxmox': {
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'name': 'Proxmox VE',
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'deploy_script': 'deploy-proxmox.sh',
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'key_location': '/tmp/{short_name}.key',
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'default_port': '8006',
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'ssh_user': 'root',
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'cert_dir': 'proxmox'
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},
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'homeassistant': {
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'name': 'Home Assistant',
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'deploy_script': 'deploy-homeassistant.sh',
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'key_location': '/tmp/{short_name}.key',
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'default_port': '8123',
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'ssh_user': 'icke',
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'uses_local_csr': True,
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'cert_dir': 'homeassistant'
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},
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'pfsense': {
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'name': 'pfSense',
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'deploy_script': None, # Manual deployment via web interface
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'key_location': '/tmp/{short_name}.key',
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'default_port': '443',
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'ssh_user': 'root',
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'cert_dir': 'pfsense'
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},
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'truenas': {
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'name': 'TrueNAS',
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'deploy_script': None, # Manual deployment via web interface
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'key_location': '/tmp/{short_name}.key',
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'default_port': '443',
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'ssh_user': 'root',
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'cert_dir': 'truenas'
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},
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'ucs': {
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'name': 'Univention Corporate Server',
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'deploy_script': None,
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'key_location': '/tmp/{short_name}.key',
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'default_port': '443',
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'ssh_user': 'root',
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'cert_dir': 'ucs'
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},
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'unknown': {
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'name': 'Unknown System',
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'deploy_script': None,
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'key_location': '/tmp/{short_name}.key',
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'default_port': '443',
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'ssh_user': 'root',
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'cert_dir': 'other'
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}
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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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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 detect_system_type(target_host, script_dir, ssh_user=None, ssh_password=None):
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"""Detect the type of system on the target host"""
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try:
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detect_script = script_dir / 'detect-system.sh'
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if not detect_script.exists():
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print(f"Warning: detect-system.sh not found at {detect_script}")
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return 'unknown', None
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env = os.environ.copy()
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if ssh_user:
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env['SSH_USER'] = ssh_user
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if ssh_password:
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env['SSH_PASSWORD'] = ssh_password
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result = subprocess.run(
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[str(detect_script), target_host],
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capture_output=True,
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text=True,
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timeout=15,
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env=env
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)
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if result.returncode != 0:
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print(f"Warning: Detection script returned error code {result.returncode}")
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if result.stderr:
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print(f"Error output: {result.stderr}")
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return 'unknown', None
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system_type = result.stdout.strip()
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if not system_type:
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print("Warning: Detection script returned empty output")
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return 'unknown', None
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# Extract SSH user if detected
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detected_user = None
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if ':' in system_type:
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system_type, detected_user = system_type.split(':', 1)
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return (system_type if system_type in SYSTEM_TYPES else 'unknown'), detected_user
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except subprocess.TimeoutExpired:
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print(f"Warning: System detection timed out for {target_host}")
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return 'unknown', None
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except Exception as e:
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print(f"Warning: Could not detect system type: {e}")
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return 'unknown', None
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def check_dns_resolution(hostname):
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"""Check if a hostname resolves in DNS"""
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try:
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socket.gethostbyname(hostname)
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return True
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except socket.gaierror:
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return False
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def extract_hostnames_from_cert(cert_file):
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"""Extract all DNS names from a certificate"""
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try:
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result = subprocess.run(
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['openssl', 'x509', '-in', cert_file, '-text', '-noout'],
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capture_output=True,
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text=True,
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check=True
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)
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hostnames = []
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# Extract CN from Subject (not from Issuer!)
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subject_match = re.search(r'Subject:.*?CN\s*=\s*([^,\n]+)', result.stdout, re.DOTALL)
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if subject_match:
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cn = subject_match.group(1).strip()
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# Only add if it looks like a hostname (contains letters and possibly dots/dashes)
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if re.match(r'^[a-zA-Z0-9]([a-zA-Z0-9\-\.]*[a-zA-Z0-9])?$', cn):
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hostnames.append(cn)
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# Extract SANs
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san_match = re.search(r'X509v3 Subject Alternative Name:.*?DNS:([^\n]+)', result.stdout, re.DOTALL)
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if san_match:
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san_text = san_match.group(1)
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# Extract all DNS entries
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dns_entries = re.findall(r'DNS:([^,\s]+)', san_text)
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hostnames.extend(dns_entries)
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# Remove duplicates and filter out IP addresses
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unique_hostnames = []
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for h in hostnames:
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h = h.strip()
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# Skip if it looks like an IP address or contains special chars from CA names
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if not re.match(r'^\d+\.\d+\.\d+\.\d+$', h) and '(' not in h and ')' not in h:
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if h not in unique_hostnames and len(h) > 0:
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unique_hostnames.append(h)
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return unique_hostnames
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except Exception as e:
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print(f"Warning: Could not extract hostnames from certificate: {e}")
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return []
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def create_dns_record(hostname, target_ip, dns_server='10.0.0.21'):
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"""Create a DNS record on UCS server"""
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try:
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# Split hostname into name and domain
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parts = hostname.split('.', 1)
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if len(parts) == 1:
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# Short hostname without domain - skip it
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return False
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name = parts[0]
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domain = parts[1]
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# Construct the zone DN
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zone_parts = domain.split('.')
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zone_dn = f"zoneName={domain},cn=dns,dc={',dc='.join(zone_parts)}"
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# Create DNS record via SSH to UCS server
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cmd = [
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'ssh', f'root@{dns_server}',
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'univention-directory-manager', 'dns/host_record', 'create',
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'--superordinate', zone_dn,
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'--set', f'name={name}',
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'--set', f'a={target_ip}'
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]
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result = subprocess.run(cmd, capture_output=True, text=True)
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if result.returncode == 0:
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print(f" ✓ Created DNS record: {hostname} → {target_ip}")
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return True
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else:
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if 'already exists' in result.stderr.lower():
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print(f" ℹ DNS record already exists: {hostname}")
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return True
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else:
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print(f" ✗ Failed to create DNS record for {hostname}: {result.stderr.strip()}")
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return False
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except Exception as e:
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print(f" ✗ Error creating DNS record for {hostname}: {e}")
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return False
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def check_and_create_dns_records(cert_file, target_ip, dns_server='10.0.0.21'):
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"""Check DNS records for certificate hostnames and offer to create missing ones"""
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print("\n" + "=" * 60)
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print("Step 4: Checking DNS Records")
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print("=" * 60)
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hostnames = extract_hostnames_from_cert(cert_file)
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if not hostnames:
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print("No hostnames found in certificate to check.")
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return
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print(f"\nChecking {len(hostnames)} hostname(s) from certificate...")
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missing_hostnames = []
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for hostname in hostnames:
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if check_dns_resolution(hostname):
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print(f" ✓ {hostname} - resolves")
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else:
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print(f" ✗ {hostname} - NOT found in DNS")
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missing_hostnames.append(hostname)
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if not missing_hostnames:
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print("\n✓ All hostnames are resolvable in DNS!")
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return
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print(f"\n⚠ Found {len(missing_hostnames)} hostname(s) not in DNS:")
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for hostname in missing_hostnames:
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print(f" - {hostname}")
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if yes_no_prompt("\nDo you want to create missing DNS records on UCS?", True):
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print(f"\nCreating DNS records on {dns_server}...")
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success_count = 0
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for hostname in missing_hostnames:
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if create_dns_record(hostname, target_ip, dns_server):
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success_count += 1
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if success_count > 0:
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print(f"\n✓ Successfully created {success_count} DNS record(s)")
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print("\nNote: DNS changes may take a few seconds to propagate.")
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else:
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print("\n⚠ No DNS records were created")
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else:
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print("\nSkipping DNS record creation.")
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print("You may need to create these records manually for the certificate to work properly.")
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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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config['key_bits'] = prompt_with_default("Key Length (bits)", config['key_bits'])
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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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# Get script directory
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script_dir = Path(__file__).parent.absolute()
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# Detect system type (try key-based auth first)
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print(f"\nDetecting system type on {target_host}...")
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print("Trying SSH key-based authentication...")
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system_type, detected_user = detect_system_type(target_host, script_dir)
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# If detection failed, ask for credentials
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ssh_user = None
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ssh_password = None
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if system_type == 'unknown':
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print("\nKey-based authentication failed or system not detected.")
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if yes_no_prompt("Do you want to try with username/password?", True):
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ssh_user = input("SSH Username: ").strip()
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import getpass
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ssh_password = getpass.getpass("SSH Password: ")
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print(f"\nRetrying detection with credentials...")
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system_type, detected_user = detect_system_type(target_host, script_dir, ssh_user, ssh_password)
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# Use detected user or ask for one
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if detected_user:
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ssh_user = detected_user
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elif not ssh_user and system_type != 'unknown':
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# Ask for SSH user if not detected
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default_user = SYSTEM_TYPES[system_type].get('ssh_user', 'root')
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ssh_user = prompt_with_default("SSH Username", default_user)
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system_info = SYSTEM_TYPES[system_type]
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print(f"✓ Detected: {system_info['name']}")
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if ssh_user:
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print(f" SSH User: {ssh_user}")
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common_name = prompt_with_default("Common Name (FQDN)", config['last_common_name'])
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# Ask for additional DNS names
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print("\nAdditional DNS names (optional, comma-separated):")
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print(" Example: firewall.domain.com,vpn.domain.com")
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additional_dns = input("Additional DNS names [none]: ").strip()
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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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key_bits = prompt_with_default("Key Length (bits)", config['key_bits'])
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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"System Type: {system_info['name']}")
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print(f"Target Host: {target_host}")
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print(f"Common Name: {common_name}")
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if additional_dns:
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print(f"Additional DNS: {additional_dns}")
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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"Key Length: {key_bits} bits")
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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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# Create output directory for this system type
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cert_dir = WORKSPACE_ROOT / 'certs' / system_info.get('cert_dir', 'other')
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cert_dir.mkdir(parents=True, exist_ok=True)
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# Change to cert output directory
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original_dir = Path.cwd()
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os.chdir(cert_dir)
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print(f"\nOutput directory: {cert_dir}")
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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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print("\n" + "=" * 60)
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print("Step 1: Generating CSR")
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print("=" * 60)
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# Get script directory
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script_dir = SCRIPT_DIR
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# Check if system requires local CSR generation
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if system_info.get('uses_local_csr', False):
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# Generate CSR locally for Home Assistant and similar systems
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# Get target IP addresses
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print()
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target_ip = prompt_with_default("Target IP address(es) (comma-separated)", "172.20.70.10,172.20.20.10")
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generate_cmd = [
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str(script_dir / 'generate-csr-local.sh'),
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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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key_bits,
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additional_dns,
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target_ip
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]
|
||||
else:
|
||||
# Set environment for remote SSH commands
|
||||
env = os.environ.copy()
|
||||
if ssh_user:
|
||||
env['SSH_USER'] = ssh_user
|
||||
if ssh_password:
|
||||
env['SSH_PASSWORD'] = ssh_password
|
||||
|
||||
# Run generate-csr.sh for remote CSR generation
|
||||
generate_cmd = [
|
||||
str(script_dir / 'generate-csr.sh'),
|
||||
target_host,
|
||||
common_name,
|
||||
country,
|
||||
state,
|
||||
locality,
|
||||
organization,
|
||||
org_unit,
|
||||
key_bits,
|
||||
additional_dns
|
||||
]
|
||||
|
||||
try:
|
||||
# Set environment variables for all subprocess calls
|
||||
env = os.environ.copy()
|
||||
if ssh_user:
|
||||
env['SSH_USER'] = ssh_user
|
||||
if ssh_password:
|
||||
env['SSH_PASSWORD'] = ssh_password
|
||||
|
||||
result = subprocess.run(generate_cmd, check=True, env=env)
|
||||
except subprocess.CalledProcessError as e:
|
||||
print(f"\nError: CSR generation failed with exit code {e.returncode}")
|
||||
sys.exit(1)
|
||||
except FileNotFoundError:
|
||||
print(f"\nError: generate-csr.sh not found in {script_dir}")
|
||||
sys.exit(1)
|
||||
|
||||
print("\n" + "=" * 60)
|
||||
print("Step 2: Signing certificate with CA")
|
||||
print("=" * 60)
|
||||
|
||||
# Run sign-cert.sh
|
||||
req_file = f"{short_name}.req"
|
||||
sign_cmd = [
|
||||
str(script_dir / 'sign-cert.sh'),
|
||||
req_file,
|
||||
short_name,
|
||||
validity_days
|
||||
]
|
||||
|
||||
try:
|
||||
result = subprocess.run(sign_cmd, check=True)
|
||||
except subprocess.CalledProcessError as e:
|
||||
print(f"\nError: Certificate signing failed with exit code {e.returncode}")
|
||||
sys.exit(1)
|
||||
except FileNotFoundError:
|
||||
print(f"\nError: sign-cert.sh not found in {script_dir}")
|
||||
sys.exit(1)
|
||||
|
||||
# Certificate file path
|
||||
cert_file = f"{short_name}-cert.pem"
|
||||
|
||||
# Check and create DNS records if needed
|
||||
check_and_create_dns_records(cert_file, target_host, config['ca_server'])
|
||||
|
||||
print("\n" + "=" * 60)
|
||||
print("Step 5: Deploying certificate to target host")
|
||||
print("=" * 60)
|
||||
|
||||
# Use system-specific deployment if available
|
||||
if system_info['deploy_script']:
|
||||
if yes_no_prompt(f"Deploy certificate to {system_info['name']} automatically?", True):
|
||||
deploy_script = script_dir / system_info['deploy_script']
|
||||
|
||||
# For local CSR generation, key file is local
|
||||
if system_info.get('uses_local_csr', False):
|
||||
key_file = f"{short_name}.key" # Key is local
|
||||
else:
|
||||
key_file = f"/tmp/{short_name}.key" # Key is on remote host
|
||||
|
||||
# Set SSH_USER and SSH_PASSWORD environment variables if needed
|
||||
env = os.environ.copy()
|
||||
if ssh_user:
|
||||
env['SSH_USER'] = ssh_user
|
||||
if ssh_password:
|
||||
env['SSH_PASSWORD'] = ssh_password
|
||||
|
||||
deploy_cmd = [
|
||||
str(deploy_script),
|
||||
target_host,
|
||||
cert_file,
|
||||
key_file,
|
||||
short_name
|
||||
]
|
||||
|
||||
try:
|
||||
subprocess.run(deploy_cmd, check=True, env=env)
|
||||
except subprocess.CalledProcessError as e:
|
||||
print(f"\nError: Deployment failed with exit code {e.returncode}")
|
||||
sys.exit(1)
|
||||
except FileNotFoundError:
|
||||
print(f"\nError: {system_info['deploy_script']} not found")
|
||||
sys.exit(1)
|
||||
else:
|
||||
# Generic deployment - just copy files
|
||||
if yes_no_prompt("Copy certificate back to the target host?", True):
|
||||
try:
|
||||
subprocess.run(['scp', cert_file, f'root@{target_host}:/tmp/{short_name}.crt'], check=True)
|
||||
print(f"\n✓ Certificate copied to target host at /tmp/{short_name}.crt")
|
||||
print(f" Private key is at /tmp/{short_name}.key")
|
||||
print(f"\n⚠ Manual installation required for {system_info['name']}")
|
||||
print(f" Please install the certificate through the web interface.")
|
||||
except subprocess.CalledProcessError:
|
||||
print("\nWarning: Failed to copy certificate to target host")
|
||||
|
||||
print("\n" + "=" * 60)
|
||||
print("✓ Certificate Management Complete!")
|
||||
print("=" * 60)
|
||||
print(f"\nFiles created:")
|
||||
print(f" - {req_file} (Certificate Request)")
|
||||
print(f" - {cert_file} (Signed Certificate)")
|
||||
print(f"\nOn target host ({target_host}):")
|
||||
print(f" - /tmp/{short_name}.key (Private Key - {key_bits} bits)")
|
||||
print(f" - /tmp/{short_name}.crt (Certificate)")
|
||||
|
||||
if system_type == 'proxmox':
|
||||
print(f"\n✓ Access Proxmox at: https://{target_host}:{system_info['default_port']}")
|
||||
|
||||
print("\n")
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
main()
|
||||
except KeyboardInterrupt:
|
||||
print("\n\nCancelled by user.")
|
||||
sys.exit(1)
|
||||
except Exception as e:
|
||||
print(f"\nError: {e}")
|
||||
sys.exit(1)
|
||||
Reference in New Issue
Block a user