Added key rollover code.
This commit is contained in:
Ashiq5
parent
94aab7c5e2
commit
e6657d6ebe
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@ -364,6 +364,77 @@ def ssl_get_csr(domain):
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ssl_private_key = os.path.join(os.path.join(env["STORAGE_ROOT"], 'ssl', 'ssl_private_key.pem'))
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return create_csr(domain, ssl_private_key, request.form.get('countrycode', ''), env)
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@app.route('/ssl/renew/<domain>', methods=['POST'])
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@authorized_personnel_only
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def ssl_renew(domain):
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from exclusiveprocess import Lock
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from utils import load_environment
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from ssl_certificates import provision_certificates
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existing_key = request.form.get('existing_key')
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Lock(die=True).forever()
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env = load_environment()
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if existing_key == "yes":
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status = provision_certificates(env, limit_domains=[], domain_to_be_renewed=domain)
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app.logger.warning("renew without new key=", status) # TODO: remove this line after testing
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elif existing_key == "no":
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import glob
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try:
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# steps followed
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# 1. take a backup of the current /home/user-data/ssl/ folder to be safe
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# 2. renew all the existing certificates from CSR generated from the existing next_ssl_private_key
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# 3. if the renew is successful, replace the current ssl_private_key with the next_ssl_private_key and
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# 4. generate the next_ssl_private_key
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# 5. if any error occurs, copy everything from the /home/user-data/ssl-backup folder to /home/user-data/ssl
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# step 1
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files = glob.glob(env["STORAGE_ROOT"] + "/ssl/*")
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for file in files:
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subprocess.check_output(["cp", "-r", file, env["STORAGE_ROOT"] + "/ssl-backup/"])
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# step 2
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status = provision_certificates(env, limit_domains=[], new_key=True)
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# step 3 and 4 is in post_install_func method of ssl_certificates.py
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app.logger.warning("renew with new key=", status) # TODO: remove this line after proper testing
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except Exception as e:
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import traceback
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files = glob.glob(env["STORAGE_ROOT"] + "/ssl-backup/*")
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for file in files:
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subprocess.check_output(["cp", "-r", file, env["STORAGE_ROOT"] + "/ssl/"])
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app.logger.warning(traceback.print_exc()) # TODO: remove this line after proper testing
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return json_response({
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"title": "Error",
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"log": "Sorry, something is not right!",
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})
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else:
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return json_response({
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"title": "Error",
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"log": "Sorry, something is not right!",
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})
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for item in status:
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if isinstance(status, str):
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continue
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else:
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if domain in item['domains']:
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if item['result'] == 'skipped':
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return json_response({
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"title": item["result"].capitalize(),
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"log": "\n".join(item['log']),
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})
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elif item['result'] == 'installed':
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return json_response({
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"title": item["result"].capitalize(),
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"log": "Your certificate containing these domains " + ",".join(
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item['domains']) + " have been renewed",
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})
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else:
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return json_response({
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"title": item["result"].capitalize(),
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"log": "\n".join(item['log'])
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})
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@app.route('/ssl/install', methods=['POST'])
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@authorized_personnel_only
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def ssl_install_cert():
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@ -604,7 +675,8 @@ def log_failed_login(request):
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# APP
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if __name__ == '__main__':
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if "DEBUG" in os.environ: app.debug = True
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app.debug = True # TODO: remove this line and uncomment the next line after testing
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# if "DEBUG" in os.environ: app.debug = True
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if "APIKEY" in os.environ: auth_service.key = os.environ["APIKEY"]
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if not app.debug:
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@ -174,9 +174,11 @@ def build_zone(domain, all_domains, additional_records, www_redirect_domains, en
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# Add a DANE TLSA record for SMTP.
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records.append(("_25._tcp", "TLSA", build_tlsa_record(env), "Recommended when DNSSEC is enabled. Advertises to mail servers connecting to the box that mandatory encryption should be used."))
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records.append(("_25._tcp", "TLSA", build_tlsa_record(env, from_cert=False), "Recommended when DNSSEC is enabled. Advertises to mail servers connecting to the box that mandatory encryption should be used."))
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# Add a DANE TLSA record for HTTPS, which some browser extensions might make use of.
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records.append(("_443._tcp", "TLSA", build_tlsa_record(env), "Optional. When DNSSEC is enabled, provides out-of-band HTTPS certificate validation for a few web clients that support it."))
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records.append(("_443._tcp", "TLSA", build_tlsa_record(env, from_cert=False), "Optional. When DNSSEC is enabled, provides out-of-band HTTPS certificate validation for a few web clients that support it."))
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# Add a SSHFP records to help SSH key validation. One per available SSH key on this system.
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for value in build_sshfp_records():
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@ -367,7 +369,7 @@ def build_zone(domain, all_domains, additional_records, www_redirect_domains, en
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########################################################################
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def build_tlsa_record(env):
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def build_tlsa_record(env, from_cert=True):
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# A DANE TLSA record in DNS specifies that connections on a port
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# must use TLS and the certificate must match a particular criteria.
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#
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@ -390,11 +392,16 @@ def build_tlsa_record(env):
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from ssl_certificates import load_cert_chain, load_pem
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from cryptography.hazmat.primitives.serialization import Encoding, PublicFormat
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if from_cert:
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fn = os.path.join(env["STORAGE_ROOT"], "ssl", "ssl_certificate.pem")
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cert = load_pem(load_cert_chain(fn)[0])
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subject_public_key = cert.public_key().public_bytes(Encoding.DER, PublicFormat.SubjectPublicKeyInfo)
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# We could have also loaded ssl_private_key.pem and called priv_key.public_key().public_bytes(...)
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else:
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# this is for Double TLSA scheme of key rollover.
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# More details here (https://mail.sys4.de/pipermail/dane-users/2018-February/000440.html)
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fn = os.path.join(env["STORAGE_ROOT"], "ssl", "next_ssl_private_key.pem")
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private_key = load_pem(open(fn, 'rb').read())
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subject_public_key = private_key.public_key().public_bytes(Encoding.DER, PublicFormat.SubjectPublicKeyInfo)
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pk_hash = hashlib.sha256(subject_public_key).hexdigest()
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@ -862,6 +869,8 @@ def set_custom_dns_record(qname, rtype, value, action, env):
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if not re.search(DOMAIN_RE, value):
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raise ValueError("Invalid value.")
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elif rtype == "TLSA":
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pass
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elif rtype in ("CNAME", "TXT", "SRV", "MX", "SSHFP", "CAA"):
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# anything goes
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pass
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@ -45,7 +45,7 @@ def get_ssl_certificates(env):
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# Remember stuff.
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private_keys = { }
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certificates = [ ]
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certificates = []
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# Scan each of the files to find private keys and certificates.
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# We must load all of the private keys first before processing
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@ -73,6 +73,7 @@ def get_ssl_certificates(env):
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domains = { }
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for cert in certificates:
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# What domains is this certificate good for?
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# cert_domains = cert common name + all SANs, primary_domain = cert common name
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cert_domains, primary_domain = get_certificate_domains(cert)
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cert._primary_domain = primary_domain
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@ -186,8 +187,16 @@ def get_certificates_to_provision(env, limit_domains=None, show_valid_certs=True
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from web_update import get_web_domains
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from status_checks import query_dns, normalize_ip
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# existing_certs = all valid certificates that are in /home/user-data/ssl or 1 level deep
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# validity indicator -> private key exists for the cert public key?, not_expired?
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# if multiple valid certs exist, then the one with the furthest expiry date and filename
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# lexicographically smallest is returned
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existing_certs = get_ssl_certificates(env)
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# this function returns the list of domain names of all the email addresses and adds
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# autoconfig, www, mta-sts, autodiscover subdomain to each of these domains
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# if exclude_dns_elsewhere flag is set, then all the domains having A/AAAA record not on this machine
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# are excluded
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plausible_web_domains = get_web_domains(env, exclude_dns_elsewhere=False)
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actual_web_domains = get_web_domains(env)
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@ -212,7 +221,8 @@ def get_certificates_to_provision(env, limit_domains=None, show_valid_certs=True
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# how Let's Encrypt will connect.
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bad_dns = []
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for rtype, value in [("A", env["PUBLIC_IP"]), ("AAAA", env.get("PUBLIC_IPV6"))]:
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if not value: continue # IPv6 is not configured
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if not value:
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continue # IPv6 is not configured
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response = query_dns(domain, rtype)
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if response != normalize_ip(value):
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bad_dns.append("%s (%s)" % (response, rtype))
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@ -226,6 +236,7 @@ def get_certificates_to_provision(env, limit_domains=None, show_valid_certs=True
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# DNS is all good.
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# Check for a good existing cert.
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# existing_cert = existing cert for domain
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existing_cert = get_domain_ssl_files(domain, existing_certs, env, use_main_cert=False, allow_missing_cert=True)
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if existing_cert:
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existing_cert_check = check_certificate(domain, existing_cert['certificate'], existing_cert['private-key'],
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@ -242,13 +253,24 @@ def get_certificates_to_provision(env, limit_domains=None, show_valid_certs=True
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return (domains_to_provision, domains_cant_provision)
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def provision_certificates(env, limit_domains):
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def provision_certificates(env, limit_domains, domain_to_be_renewed=None, new_key=False):
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# What domains should we provision certificates for? And what
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# errors prevent provisioning for other domains.
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ret = []
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is_tlsa_update_required = False
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if new_key:
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from web_update import get_web_domains
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domains = get_web_domains(env)
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elif domain_to_be_renewed:
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existing_certs = get_ssl_certificates(env)
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existing_cert = get_domain_ssl_files(domain_to_be_renewed, existing_certs, env, use_main_cert=False, allow_missing_cert=True)
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domains, primary_domain = get_certificate_domains(load_pem(load_cert_chain(existing_cert["certificate"])[0]))
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else:
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# domains = domains for which a certificate can be provisioned
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# domains_cant_provision = domains for which a certificate can't be provisioned and the reason
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domains, domains_cant_provision = get_certificates_to_provision(env, limit_domains=limit_domains)
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# Build a list of what happened on each domain or domain-set.
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ret = []
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for domain, error in domains_cant_provision.items():
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ret.append({
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"domains": [domain],
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@ -309,6 +331,8 @@ def provision_certificates(env, limit_domains):
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# Create a CSR file for our master private key so that certbot
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# uses our private key.
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key_file = os.path.join(env['STORAGE_ROOT'], 'ssl', 'ssl_private_key.pem')
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if new_key:
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key_file = os.path.join(env['STORAGE_ROOT'], 'ssl', 'next_ssl_private_key.pem')
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with tempfile.NamedTemporaryFile() as csr_file:
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# We could use openssl, but certbot requires
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# that the CN domain and SAN domains match
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@ -363,6 +387,8 @@ def provision_certificates(env, limit_domains):
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ret[-1]["log"].append(certbotret)
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ret[-1]["result"] = "installed"
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if new_key and env['PRIMARY_HOSTNAME'] in domains:
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is_tlsa_update_required = True
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except subprocess.CalledProcessError as e:
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ret[-1]["log"].append(e.output.decode("utf8"))
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ret[-1]["result"] = "error"
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@ -371,7 +397,7 @@ def provision_certificates(env, limit_domains):
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ret[-1]["result"] = "error"
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# Run post-install steps.
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ret.extend(post_install_func(env))
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ret.extend(post_install_func(env, is_tlsa_update_required=is_tlsa_update_required))
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# Return what happened with each certificate request.
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return ret
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@ -466,7 +492,7 @@ def install_cert_copy_file(fn, env):
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shutil.move(fn, ssl_certificate)
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def post_install_func(env):
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def post_install_func(env, is_tlsa_update_required=False):
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ret = []
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# Get the certificate to use for PRIMARY_HOSTNAME.
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@ -496,6 +522,25 @@ def post_install_func(env):
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# The DANE TLSA record will remain valid so long as the private key
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# hasn't changed. We don't ever change the private key automatically.
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# If the user does it, they must manually update DNS.
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if is_tlsa_update_required:
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from dns_update import do_dns_update, set_custom_dns_record, build_tlsa_record
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subprocess.check_output([
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"mv", env["STORAGE_ROOT"] + "/ssl/next_ssl_private_key.pem",
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env["STORAGE_ROOT"] + "/ssl/ssl_private_key.pem"
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])
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subprocess.check_output([
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"openssl", "genrsa",
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"-out", env["STORAGE_ROOT"] + "/ssl/next_ssl_private_key.pem",
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"2048"])
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qname1 = "_25._tcp." + env['PRIMARY_HOSTNAME']
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qname2 = "_443._tcp." + env['PRIMARY_HOSTNAME']
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rtype = "TLSA"
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value = build_tlsa_record(env, from_cert=False)
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action = "add"
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if set_custom_dns_record(qname1, rtype, value, action, env):
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set_custom_dns_record(qname2, rtype, value, action, env)
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ret.append(do_dns_update(env))
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# Update the web configuration so nginx picks up the new certificate file.
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from web_update import do_web_update
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@ -454,9 +454,9 @@ def check_primary_hostname_dns(domain, env, output, dns_domains, dns_zonefiles):
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# Check the TLSA record.
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tlsa_qname = "_25._tcp." + domain
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tlsa25 = query_dns(tlsa_qname, "TLSA", nxdomain=None)
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tlsa25 = query_dns(tlsa_qname, "TLSA", nxdomain=None).split('; ')
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tlsa25_expected = build_tlsa_record(env)
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if tlsa25 == tlsa25_expected:
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if tlsa25_expected in tlsa25:
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output.print_ok("""The DANE TLSA record for incoming mail is correct (%s).""" % tlsa_qname,)
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elif tlsa25 is None:
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if has_dnssec:
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@ -40,7 +40,10 @@
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<h3 id="ssl_install_header">Install certificate</h3>
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<p>If you don't want to use our automatic Let's Encrypt integration, you can give any other certificate provider a try. You can generate the needed CSR below.</p>
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<p>If you don't want to use our automatic Let's Encrypt integration, you can give any other certificate provider a try. Click on install certificate button
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if there is no certificate for your intended domain or
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click on renew or replace certificate button and click replace if there is an existing certificate and you want to replace it with a new one from a different CA.
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You can generate the needed CSR below.</p>
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<p>Which domain are you getting a certificate for?</p>
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@ -101,7 +104,8 @@ function show_tls(keep_provisioning_shown) {
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$('#ssldomain').html('<option value="">(select)</option>');
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$('#ssl_domains').show();
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for (var i = 0; i < domains.length; i++) {
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var row = $("<tr><th class='domain'><a href=''></a></th><td class='status'></td> <td class='actions'><a href='#' onclick='return ssl_install(this);' class='btn btn-xs'>Install Certificate</a></td></tr>");
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var row = $("<tr><th class='domain'><a href=''></a></th><td class='status'></td> " +
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"<td class='actions'><a href='#' onclick='return ssl_install(this);' class='btn btn-xs'>Install Certificate</a></td></tr>");
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tb.append(row);
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row.attr('data-domain', domains[i].domain);
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row.find('.domain a').text(domains[i].domain);
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@ -113,7 +117,10 @@ function show_tls(keep_provisioning_shown) {
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row.addClass("text-" + domains[i].status);
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row.find('.status').text(domains[i].text);
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if (domains[i].status == "success") {
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row.find('.actions a').addClass('btn-default').text('Replace Certificate');
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row.find('.actions a').addClass('btn-default').text('Renew or replace Certificate');
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row.find('.actions a').addClass('btn-default').on("click", function () {
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ssl_renew_or_replace_modal(this);
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});
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} else {
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row.find('.actions a').addClass('btn-primary').text('Install Certificate');
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}
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@ -131,6 +138,65 @@ function ssl_install(elem) {
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return false;
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}
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function ssl_renew_or_replace_modal(elem) {
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show_modal_confirm(
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"Options",
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"Do you want to replace the certificate with a new one or just renew this one?",
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["Replace", "Renew"],
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function () {
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ssl_install(elem);
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},
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function () {
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ssl_cert_renew(elem);
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});
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}
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function ssl_cert_renew(elem) {
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var domain = $(elem).parents('tr').attr('data-domain');
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show_modal_confirm(
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"Options",
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"Do you want to renew with the existing key?",
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["Yes", "No"],
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function () {
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ajax_with_indicator(true);
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api(
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"/ssl/renew/" + domain,
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"POST",
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{
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existing_key: "yes"
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},
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function(data) {
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$('#ajax_loading_indicator').stop(true).hide();
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show_modal_error(data["title"], data["log"]);
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show_tls(true);
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},
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function () {
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$('#ajax_loading_indicator').stop(true).hide();
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show_modal_error("Error", "Something is not right, sorry!");
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show_tls(true);
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});
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},
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function () {
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ajax_with_indicator(true);
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api(
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"/ssl/renew/" + domain,
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"POST",
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{
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existing_key: "no"
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},
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function(data) {
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$('#ajax_loading_indicator').stop(true).hide();
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show_modal_error(data["title"], data["log"]);
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show_tls(true);
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},
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function () {
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||||
$('#ajax_loading_indicator').stop(true).hide();
|
||||
show_modal_error("Error", "Something is not right, sorry!");
|
||||
show_tls(true);
|
||||
}
|
||||
);
|
||||
});
|
||||
}
|
||||
|
||||
function show_csr() {
|
||||
// Can't show a CSR until both inputs are entered.
|
||||
if ($('#ssldomain').val() == "") return;
|
||||
|
|
|
|||
|
|
@ -66,6 +66,13 @@ if [ ! -f $STORAGE_ROOT/ssl/ssl_private_key.pem ]; then
|
|||
openssl genrsa -out $STORAGE_ROOT/ssl/ssl_private_key.pem 2048)
|
||||
fi
|
||||
|
||||
# for Double TLSA scheme. More details here (https://mail.sys4.de/pipermail/dane-users/2018-February/000440.html)
|
||||
if [ ! -f $STORAGE_ROOT/ssl/next_ssl_private_key.pem ]; then
|
||||
# Set the umask so the key file is never world-readable.
|
||||
(umask 077; hide_output \
|
||||
openssl genrsa -out $STORAGE_ROOT/ssl/next_ssl_private_key.pem 2048)
|
||||
fi
|
||||
|
||||
# Generate a self-signed SSL certificate because things like nginx, dovecot,
|
||||
# etc. won't even start without some certificate in place, and we need nginx
|
||||
# so we can offer the user a control panel to install a better certificate.
|
||||
|
|
|
|||
Loading…
Reference in New Issue