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Adjusting the way that certificates are requested. (#643) 

* Adjusting the way that certificates are requested.

* Fixing tests.
This commit is contained in:
kevgliss 2017-02-16 13:24:05 -08:00 committed by GitHub
parent 08bb9c73a0
commit cf6ad94509
3 changed files with 37 additions and 57 deletions
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69
lemur/plugins/lemur_acme/plugin.py
View File

@ -15,10 +15,10 @@ from flask import current_app
from acme.client import Client
from acme import jose
from acme import messages
from acme import challenges
from lemur.common.utils import generate_private_key
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization
import OpenSSL.crypto
@ -27,14 +27,14 @@ from lemur.common.utils import validate_conf
from lemur.plugins.bases import IssuerPlugin
from lemur.plugins import lemur_acme as acme
from .route53 import delete_txt_record, create_txt_record, wait_for_change
from .route53 import delete_txt_record, create_txt_record, wait_for_r53_change
def find_dns_challenge(authz):
for combo in authz.body.resolved_combinations:
if (
len(combo) == 1 and
isinstance(combo[0].chall, acme.challenges.DNS01)
isinstance(combo[0].chall, challenges.DNS01)
):
yield combo[0]
@ -47,17 +47,15 @@ class AuthorizationRecord(object):
self.change_id = change_id
def start_dns_challenge(acme_client, host):
authz = acme_client.request_domain_challenges(
host, acme_client.directory.new_authz
)
def start_dns_challenge(acme_client, account_number, host):
authz = acme_client.request_domain_challenges(host)
[dns_challenge] = find_dns_challenge(authz)
change_id = create_txt_record(
dns_challenge.validation_domain_name(host),
dns_challenge.validation(acme_client.key),
account_number
)
return AuthorizationRecord(
@ -68,8 +66,8 @@ def start_dns_challenge(acme_client, host):
)
def complete_dns_challenge(acme_client, authz_record):
wait_for_change(authz_record.change_id)
def complete_dns_challenge(acme_client, account_number, authz_record):
wait_for_r53_change(authz_record.change_id, account_number=account_number)
response = authz_record.dns_challenge.response(acme_client.key)
@ -109,35 +107,21 @@ def request_certificate(acme_client, authorizations, csr):
def setup_acme_client():
key = current_app.config.get('ACME_PRIVATE_KEY').strip()
acme_email = current_app.config.get('ACME_EMAIL')
acme_tel = current_app.config.get('ACME_TEL')
acme_directory_url = current_app.config.get('ACME_DIRECTORY_URL'),
contact = ('mailto:{}'.format(acme_email), 'tel:{}'.format(acme_tel))
email = current_app.config.get('ACME_EMAIL')
tel = current_app.config.get('ACME_TEL')
directory_url = current_app.config.get('ACME_DIRECTORY_URL')
contact = ('mailto:{}'.format(email), 'tel:{}'.format(tel))
key = serialization.load_pem_private_key(
key, password=None, backend=default_backend()
)
key = jose.JWKRSA(key=generate_private_key('RSA2048'))
return acme_client_for_private_key(acme_directory_url, key)
client = Client(directory_url, key)
def acme_client_for_private_key(acme_directory_url, private_key):
return Client(
acme_directory_url, key=jose.JWKRSA(key=private_key)
)
def register(email):
private_key = generate_private_key('RSA2048')
acme_client = acme_client_for_private_key(current_app.config('ACME_DIRECTORY_URL'), private_key)
registration = acme_client.register(
registration = client.register(
messages.NewRegistration.from_data(email=email)
)
acme_client.agree_to_tos(registration)
return private_key
client.agree_to_tos(registration)
return client, registration
def get_domains(options):
@ -147,27 +131,29 @@ def get_domains(options):
:return:
"""
domains = [options['common_name']]
for name in options['extensions']['sub_alt_name']['names']:
if options.get('extensions'):
for name in options['extensions']['sub_alt_names']['names']:
domains.append(name)
return domains
def get_authorizations(acme_client, domains):
def get_authorizations(acme_client, account_number, domains):
authorizations = []
try:
for domain in domains:
authz_record = start_dns_challenge(acme_client, domain)
authz_record = start_dns_challenge(acme_client, account_number, domain)
authorizations.append(authz_record)
for authz_record in authorizations:
complete_dns_challenge(acme_client, authz_record)
complete_dns_challenge(acme_client, account_number, authz_record)
finally:
for authz_record in authorizations:
dns_challenge = authz_record.dns_challenge
delete_txt_record(
authz_record.change_id,
account_number,
dns_challenge.validation_domain_name(authz_record.host),
dns_challenge.validation(acme_client.key),
dns_challenge.validation(acme_client.key)
)
return authorizations
@ -187,7 +173,7 @@ class ACMEIssuerPlugin(IssuerPlugin):
'ACME_DIRECTORY_URL',
'ACME_TEL',
'ACME_EMAIL',
'ACME_PRIVATE_KEY',
'ACME_AWS_ACCOUNT_NUMBER',
'ACME_ROOT'
]
@ -203,9 +189,10 @@ class ACMEIssuerPlugin(IssuerPlugin):
:return: :raise Exception:
"""
current_app.logger.debug("Requesting a new acme certificate: {0}".format(issuer_options))
acme_client = setup_acme_client()
acme_client, registration = setup_acme_client()
account_number = current_app.config.get('ACME_AWS_ACCOUNT_NUMBER')
domains = get_domains(issuer_options)
authorizations = get_authorizations(acme_client, domains)
authorizations = get_authorizations(acme_client, account_number, domains)
pem_certificate, pem_certificate_chain = request_certificate(acme_client, authorizations, csr)
return pem_certificate, pem_certificate_chain

21
lemur/plugins/lemur_acme/route53.py
View File

@ -54,33 +54,24 @@ def change_txt_record(action, zone_id, domain, value, client=None):
return response["ChangeInfo"]["Id"]
def create_txt_record(host, value):
zone_id = find_zone_id(host)
def create_txt_record(account_number, host, value):
zone_id = find_zone_id(host, account_number=account_number)
change_id = change_txt_record(
"CREATE",
zone_id,
host,
value,
account_number=account_number
)
return zone_id, change_id
def delete_txt_record(change_id, host, value):
def delete_txt_record(change_id, account_number, host, value):
zone_id, _ = change_id
change_txt_record(
"DELETE",
zone_id,
host,
value
value,
account_number=account_number
)
@sts_client('route53')
def wait_for_change(change_id, client=None):
_, change_id = change_id
while True:
response = client.get_change(Id=change_id)
if response["ChangeInfo"]["Status"] == "INSYNC":
return
time.sleep(5)

2
lemur/tests/conf.py
View File

@ -82,6 +82,8 @@ VERISIGN_LAST_NAME = 'Bob'
VERSIGN_EMAIL = 'jim@example.com'
ACME_AWS_ACCOUNT_NUMBER = '11111111111'
ACME_PRIVATE_KEY = '''
-----BEGIN RSA PRIVATE KEY-----
MIIJJwIBAAKCAgEA0+jySNCc1i73LwDZEuIdSkZgRYQ4ZQVIioVf38RUhDElxy51