2019-01-22 09:05:41 +01:00
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# config - acertmgr config parser
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# Copyright (c) Markus Hauschild & David Klaftenegger, 2016.
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# Copyright (c) Rudolf Mayerhofer, 2019.
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# available under the ISC license, see LICENSE
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2019-02-20 11:57:15 +01:00
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import argparse
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2019-01-22 09:05:41 +01:00
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import copy
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import hashlib
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2019-03-07 13:51:08 +01:00
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import io
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2019-03-21 13:03:09 +01:00
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import json
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2019-03-24 17:15:30 +01:00
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import os
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2019-03-27 16:34:29 +01:00
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import sys
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try:
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import idna
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except ImportError:
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pass
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2019-01-22 09:05:41 +01:00
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2019-02-20 11:57:15 +01:00
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# Backward compatiblity for older versions/installations of acertmgr
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LEGACY_WORK_DIR = "/etc/acme"
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LEGACY_CONF_FILE = os.path.join(LEGACY_WORK_DIR, "acme.conf")
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LEGACY_CONF_DIR = os.path.join(LEGACY_WORK_DIR, "domains.d")
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2019-01-22 09:05:41 +01:00
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2019-02-20 11:57:15 +01:00
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# Configuration defaults to use if not specified otherwise
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DEFAULT_CONF_FILE = "/etc/acertmgr/acertmgr.conf"
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DEFAULT_CONF_DIR = "/etc/acertmgr"
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DEFAULT_KEY_LENGTH = 4096 # bits
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2019-03-18 13:13:22 +01:00
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DEFAULT_TTL = 30 # days
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2019-03-19 02:13:29 +01:00
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DEFAULT_API = "v2"
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DEFAULT_AUTHORITY = "https://acme-v02.api.letsencrypt.org"
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LEGACY_API = "v1"
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LEGACY_AUTHORITY = "https://acme-v01.api.letsencrypt.org"
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LEGACY_AUTHORITY_TOS_AGREEMENT = "true"
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# @brief augment configuration with defaults
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# @param domainconfig the domain configuration
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# @param defaults the default configuration
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# @return the augmented configuration
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def complete_action_config(domainconfig, config):
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defaults = config['defaults']
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domainconfig['ca_file'] = config['ca_file']
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domainconfig['cert_file'] = config['cert_file']
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domainconfig['key_file'] = config['key_file']
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for name, value in defaults.items():
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if name not in domainconfig:
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domainconfig[name] = value
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if 'action' not in domainconfig:
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domainconfig['action'] = None
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return domainconfig
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2019-03-07 13:51:08 +01:00
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# @brief update config[name] with value from localconfig>globalconfig>default
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def update_config_value(config, name, localconfig, globalconfig, default):
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values = [x for x in localconfig if name in x]
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if len(values) > 0:
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config[name] = values[0][name]
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else:
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config[name] = globalconfig.get(name, default)
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# @brief convert domain list to idna representation (if applicable
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def idna_convert(domainlist):
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if 'idna' in sys.modules and any(ord(c) >= 128 for c in ''.join(domainlist)):
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domaintranslation = {}
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for domain in domainlist:
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if any(ord(c) >= 128 for c in domain):
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# Translate IDNA domain name from a unicode domain (handle wildcards separately)
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if domain.startswith('*.'):
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idna_domain = "*.{}".format(idna.encode(domain[2:]).decode('utf-8'))
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else:
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idna_domain = idna.encode(domain).decode('utf-8')
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domaintranslation[idna_domain] = domain
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return domaintranslation
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else:
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if 'idna' not in sys.modules:
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print("Unicode domain found but IDNA names could not be translated due to missing idna module")
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return {}
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# @brief load the configuration from a file
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def parse_config_entry(entry, globalconfig, runtimeconfig):
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config = dict()
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# Basic domain information
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config['domains'], localconfig = entry
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config['domainlist'] = config['domains'].split(' ')
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config['id'] = hashlib.md5(config['domains'].encode('utf-8')).hexdigest()
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# Convert unicode to IDNA domains
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config['domaintranslation'] = idna_convert(config['domainlist'])
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if len(config['domaintranslation']) > 0:
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config['domainlist'] = config['domaintranslation'].values()
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config['domains'] = ' '.join(config['domainlist'])
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# Action config defaults
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config['defaults'] = globalconfig.get('defaults', {})
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# API version
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update_config_value(config, 'api', localconfig, globalconfig, DEFAULT_API)
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# Certificate authority
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update_config_value(config, 'authority', localconfig, globalconfig, DEFAULT_AUTHORITY)
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# Certificate authority ToS agreement
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update_config_value(config, 'authority_tos_agreement', localconfig, globalconfig,
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runtimeconfig['authority_tos_agreement'])
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2019-02-23 17:52:07 +01:00
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# Certificate authority contact email addresses
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update_config_value(config, 'authority_contact_email', localconfig, globalconfig, None)
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# Account key
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update_config_value(config, 'account_key', localconfig, globalconfig,
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os.path.join(runtimeconfig['work_dir'], "account.key"))
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# Certificate directory
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update_config_value(config, 'cert_dir', localconfig, globalconfig, runtimeconfig['work_dir'])
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# TTL days
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update_config_value(config, 'ttl_days', localconfig, globalconfig, DEFAULT_TTL)
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config['ttl_days'] = int(config['ttl_days'])
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2019-03-24 17:22:04 +01:00
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# Use a static cert request
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2019-03-24 17:50:31 +01:00
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update_config_value(config, 'csr_static', localconfig, globalconfig, "false")
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# SSL cert request location
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update_config_value(config, 'csr_file', localconfig, globalconfig,
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os.path.join(config['cert_dir'], "{}.csr".format(config['id'])))
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# SSL cert location (with compatibility to older versions)
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if 'server_cert' in globalconfig:
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print("WARNING: Legacy configuration directive 'server_cert' used. Support will be removed in 1.0")
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update_config_value(config, 'cert_file', localconfig, globalconfig,
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globalconfig.get('server_cert',
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os.path.join(config['cert_dir'], "{}.crt".format(config['id']))))
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# SSL key location (with compatibility to older versions)
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if 'server_key' in globalconfig:
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print("WARNING: Legacy configuration directive 'server_key' used. Support will be removed in 1.0")
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update_config_value(config, 'key_file', localconfig, globalconfig,
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globalconfig.get('server_key',
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os.path.join(config['cert_dir'], "{}.key".format(config['id']))))
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# SSL key length (if key has to be (re-)generated, converted to int)
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update_config_value(config, 'key_length', localconfig, globalconfig, DEFAULT_KEY_LENGTH)
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config['key_length'] = int(config['key_length'])
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# SSL CA location
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ca_files = [x for x in entry if 'ca_file' in x]
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if len(ca_files) > 0:
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config['static_ca'] = True
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config['ca_file'] = ca_files[0]
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elif 'server_ca' in globalconfig:
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print("WARNING: Legacy configuration directive 'server_ca' used. Support will be removed in 1.0")
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config['static_ca'] = True
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config['ca_file'] = globalconfig['server_ca']
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else:
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config['static_ca'] = False
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config['ca_file'] = os.path.join(config['cert_dir'], "{}.ca".format(config['id']))
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# Domain action configuration
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config['actions'] = list()
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for actioncfg in [x for x in localconfig if 'path' in x]:
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config['actions'].append(complete_action_config(actioncfg, config))
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# Domain challenge handler configuration
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config['handlers'] = dict()
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handlerconfigs = [x for x in localconfig if 'mode' in x]
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for domain in config['domainlist']:
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# Use global config as base handler config
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cfg = copy.deepcopy(globalconfig)
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# Determine generic domain handler config values
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genericfgs = [x for x in handlerconfigs if 'domain' not in x]
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if len(genericfgs) > 0:
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cfg.update(genericfgs[0])
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2019-03-21 13:03:09 +01:00
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# Update handler config with more specific values (use original names for translated unicode domains)
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_domain = config.get('domaintranslation', {}).get(domain, domain)
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specificcfgs = [x for x in handlerconfigs if 'domain' in x and x['domain'] == _domain]
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if len(specificcfgs) > 0:
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cfg.update(specificcfgs[0])
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config['handlers'][domain] = cfg
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return config
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# @brief load the configuration from a file
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def load():
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runtimeconfig = dict()
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parser = argparse.ArgumentParser(description="acertmgr - Automated Certificate Manager using ACME/Let's Encrypt")
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parser.add_argument("-c", "--config-file", nargs="?",
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help="global configuration file (default='{}')".format(DEFAULT_CONF_FILE))
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parser.add_argument("-d", "--config-dir", nargs="?",
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help="domain configuration directory (default='{}')".format(DEFAULT_CONF_DIR))
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parser.add_argument("-w", "--work-dir", nargs="?",
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help="persistent work data directory (default=config_dir)")
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parser.add_argument("--authority-tos-agreement", "--tos-agreement", "--tos", nargs="?",
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help="Agree to the authorities Terms of Service (value required depends on authority)")
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args = parser.parse_args()
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# Determine global configuration file
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if args.config_file:
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global_config_file = args.config_file
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elif os.path.isfile(LEGACY_CONF_FILE):
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print("WARNING: Legacy config file '{}' used. Move to '{}' for 1.0".format(LEGACY_CONF_FILE, DEFAULT_CONF_FILE))
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global_config_file = LEGACY_CONF_FILE
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else:
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global_config_file = DEFAULT_CONF_FILE
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# Determine domain configuration directory
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if args.config_dir:
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domain_config_dir = args.config_dir
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elif os.path.isdir(LEGACY_CONF_DIR):
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print("WARNING: Legacy config dir '{}' used. Move to '{}' for 1.0".format(LEGACY_CONF_DIR, DEFAULT_CONF_DIR))
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domain_config_dir = LEGACY_CONF_DIR
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else:
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domain_config_dir = DEFAULT_CONF_DIR
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# Runtime configuration: Get from command-line options
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# - work_dir
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if args.work_dir:
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runtimeconfig['work_dir'] = args.work_dir
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elif os.path.isdir(LEGACY_WORK_DIR) and domain_config_dir == LEGACY_CONF_DIR:
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print("WARNING: Legacy work dir '{}' used. Move to config-dir for 1.0".format(LEGACY_WORK_DIR))
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runtimeconfig['work_dir'] = LEGACY_WORK_DIR
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else:
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runtimeconfig['work_dir'] = domain_config_dir
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# create work_dir if it does not exist yet
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if not os.path.isdir(runtimeconfig['work_dir']):
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os.mkdir(runtimeconfig['work_dir'], int("0700", 8))
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# - authority_tos_agreement
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if args.authority_tos_agreement:
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runtimeconfig['authority_tos_agreement'] = args.authority_tos_agreement
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elif global_config_file == LEGACY_CONF_FILE:
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# Legacy global config file assumes ToS are agreed
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runtimeconfig['authority_tos_agreement'] = LEGACY_AUTHORITY_TOS_AGREEMENT
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else:
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runtimeconfig['authority_tos_agreement'] = None
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2019-03-27 15:17:17 +01:00
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# Global configuration: Load from file
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globalconfig = dict()
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if os.path.isfile(global_config_file):
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with io.open(global_config_file) as config_fd:
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try:
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globalconfig = json.load(config_fd)
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except ValueError:
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import yaml
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config_fd.seek(0)
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2019-02-22 10:31:28 +01:00
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globalconfig = yaml.safe_load(config_fd)
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if global_config_file == LEGACY_CONF_FILE:
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if 'api' not in globalconfig:
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globalconfig['api'] = LEGACY_API
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if 'authority' not in globalconfig:
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globalconfig['authority'] = LEGACY_AUTHORITY
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2019-03-27 15:17:17 +01:00
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# Domain configuration(s): Load from file(s)
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domainconfigs = list()
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if os.path.isdir(domain_config_dir):
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for domain_config_file in os.listdir(domain_config_dir):
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domain_config_file = os.path.join(domain_config_dir, domain_config_file)
|
2019-02-20 11:57:15 +01:00
|
|
|
# check file extension and skip if global config file
|
2019-03-19 02:07:17 +01:00
|
|
|
if domain_config_file.endswith(".conf") and \
|
|
|
|
os.path.abspath(domain_config_file) != os.path.abspath(global_config_file):
|
|
|
|
with io.open(domain_config_file) as config_fd:
|
2019-02-20 11:57:15 +01:00
|
|
|
try:
|
|
|
|
for entry in json.load(config_fd).items():
|
2019-03-27 15:17:17 +01:00
|
|
|
domainconfigs.append(parse_config_entry(entry, globalconfig, runtimeconfig))
|
2019-02-20 11:57:15 +01:00
|
|
|
except ValueError:
|
|
|
|
import yaml
|
|
|
|
config_fd.seek(0)
|
2019-02-22 10:31:28 +01:00
|
|
|
for entry in yaml.safe_load(config_fd).items():
|
2019-03-27 15:17:17 +01:00
|
|
|
domainconfigs.append(parse_config_entry(entry, globalconfig, runtimeconfig))
|
2019-01-22 09:05:41 +01:00
|
|
|
|
2019-03-27 15:17:17 +01:00
|
|
|
return runtimeconfig, domainconfigs
|