new tool to purchase and install a SSL certificate using Gandi.net's API
This commit is contained in:
Joshua Tauberer
parent
30c416ff6e
commit
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#!/usr/bin/python3
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# Helps you purchase a SSL certificate from Gandi.net using
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# their API.
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#
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# Before you begin:
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# 1) Create an account on Gandi.net.
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# 2) Pre-pay $16 into your account at https://www.gandi.net/prepaid/operations. Wait until the payment goes through.
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# 3) Activate your API key first on the test platform (wait a while, refresh the page) and then activate the production API at https://www.gandi.net/admin/api_key.
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import sys, re, os.path, urllib.request
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import xmlrpc.client
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import rtyaml
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from utils import load_environment, shell
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from web_update import get_web_domains, get_domain_ssl_files, get_web_root
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from whats_next import check_certificate
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def buy_ssl_certificate(api_key, domain, command, env):
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if domain != env['PUBLIC_HOSTNAME'] \
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and domain not in get_web_domains(env):
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raise ValueError("Domain is not %s or a domain we're serving a website for." % env['PUBLIC_HOSTNAME'])
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# Initialize.
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gandi = xmlrpc.client.ServerProxy('https://rpc.gandi.net/xmlrpc/')
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try:
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existing_certs = gandi.cert.list(api_key)
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except Exception as e:
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if "Invalid API key" in str(e):
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print("Invalid API key. Check that you copied the API Key correctly from https://www.gandi.net/admin/api_key.")
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sys.exit(1)
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else:
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raise
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# Where is the SSL cert stored?
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ssl_key, ssl_certificate, ssl_csr_path = get_domain_ssl_files(domain, env)
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# Have we already created a cert for this domain?
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for cert in existing_certs:
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if cert['cn'] == domain:
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break
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else:
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# No existing cert found. Purchase one.
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if command != 'purchase':
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print("No certificate or order found yet. If you haven't yet purchased a certificate, run ths script again with the 'purchase' command. Otherwise wait a moment and try again.")
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sys.exit(1)
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else:
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# Start an order for a single standard SSL certificate.
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# Use DNS validation. Web-based validation won't work because they
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# require a file on HTTP but not HTTPS w/o redirects and we don't
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# serve anything plainly over HTTP. Email might be another way but
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# DNS is easier to automate.
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op = gandi.cert.create(api_key, {
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"csr": open(ssl_csr_path).read(),
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"dcv_method": "dns",
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"duration": 1, # year?
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"package": "cert_std_1_0_0",
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})
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print("An SSL certificate has been ordered.")
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print()
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print(op)
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print()
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print("In a moment please run this script again with the 'setup' command.")
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if cert['status'] == 'pending':
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# Get the information we need to update our DNS with a code so that
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# Gandi can verify that we own the domain.
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dcv = gandi.cert.get_dcv_params(api_key, {
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"csr": open(ssl_csr_path).read(),
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"cert_id": cert['id'],
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"dcv_method": "dns",
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"duration": 1, # year?
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"package": "cert_std_1_0_0",
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})
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if dcv["dcv_method"] != "dns":
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raise Exception("Certificate ordered with an unknown validation method.")
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# Update our DNS data.
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dns_config = env['STORAGE_ROOT'] + '/dns/custom.yaml'
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if os.path.exists(dns_config):
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dns_records = rtyaml.load(open(dns_config))
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else:
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dns_records = { }
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qname = dcv['md5'] + '.' + domain
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value = dcv['sha1'] + '.comodoca.com.'
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dns_records[qname] = { "CNAME": value }
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with open(dns_config, 'w') as f:
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f.write(rtyaml.dump(dns_records))
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shell('check_call', ['tools/dns_update'])
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# Okay, done with this step.
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print("DNS has been updated. Gandi will check within 60 minutes.")
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print()
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print("See https://www.gandi.net/admin/ssl/%d/details for the status of this order." % cert['id'])
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elif cert['status'] == 'valid':
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# The certificate is ready.
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# Check before we overwrite something we shouldn't.
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if os.path.exists(ssl_certificate):
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cert_status = check_certificate(ssl_certificate)
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if cert_status != "SELF-SIGNED":
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print("Please back up and delete the file %s so I can save your new certificate." % ssl_certificate)
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sys.exit(1)
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# Form the certificate.
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# The certificate comes as a long base64-encoded string. Break in
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# into lines in the usual way.
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pem = "-----BEGIN CERTIFICATE-----\n"
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pem += "\n".join(chunk for chunk in re.split(r"(.{64})", cert['cert']) if chunk != "")
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pem += "\n-----END CERTIFICATE-----\n\n"
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# Append intermediary certificates.
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pem += urllib.request.urlopen("https://www.gandi.net/static/CAs/GandiStandardSSLCA.pem").read().decode("ascii")
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# Write out.
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with open(ssl_certificate, "w") as f:
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f.write(pem)
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print("The certificate has been installed in %s. Restarting services..." % ssl_certificate)
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# Restart dovecot and if this is for PUBLIC_HOSTNAME.
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if domain == env['PUBLIC_HOSTNAME']:
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shell('check_call', ["/usr/sbin/service", "dovecot", "restart"])
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shell('check_call', ["/usr/sbin/service", "postfix", "restart"])
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# Restart nginx in all cases.
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shell('check_call', ["/usr/sbin/service", "nginx", "restart"])
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else:
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print("The certificate has an unknown status. Please check https://www.gandi.net/admin/ssl/%d/details for the status of this order." % cert['id'])
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if __name__ == "__main__":
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if len(sys.argv) < 4:
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print("Usage: python management/buy_certificate.py gandi_api_key domain_name {purchase, setup}")
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sys.exit(1)
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api_key = sys.argv[1]
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domain_name = sys.argv[2]
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cmd = sys.argv[3]
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buy_ssl_certificate(api_key, domain_name, cmd, load_environment())
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@ -43,11 +43,9 @@ def do_web_update(env):
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def make_domain_config(domain, template, env):
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# How will we configure this domain.
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# Where will its root directory be for static files? Try STORAGE_ROOT/web/domain_name
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# if it exists, but fall back to STORAGE_ROOT/web/default.
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for test_domain in (domain, 'default'):
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root = os.path.join(env["STORAGE_ROOT"], "www", safe_domain_name(test_domain))
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if os.path.exists(root): break
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# Where will its root directory be for static files?
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root = get_web_root(domain, env)
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# What private key and SSL certificate will we use for this domain?
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ssl_key, ssl_certificate, csr_path = get_domain_ssl_files(domain, env)
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@ -64,6 +62,13 @@ def make_domain_config(domain, template, env):
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nginx_conf = nginx_conf.replace("$SSL_CERTIFICATE", ssl_certificate)
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return nginx_conf
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def get_web_root(domain, env):
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# Try STORAGE_ROOT/web/domain_name if it exists, but fall back to STORAGE_ROOT/web/default.
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for test_domain in (domain, 'default'):
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root = os.path.join(env["STORAGE_ROOT"], "www", safe_domain_name(test_domain))
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if os.path.exists(root): break
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return root
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def get_domain_ssl_files(domain, env):
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# What SSL private key will we use? Allow the user to override this, but
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# in many cases using the same private key for all domains would be fine.
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@ -4,6 +4,8 @@
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# SSL certificates have been signed, etc., and if not tells the user
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# what to do next.
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__ALL__ = ['check_certificate']
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import os, os.path, re, subprocess
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import dns.reversename, dns.resolver
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@ -175,23 +177,11 @@ def check_ssl_cert(domain, env):
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print_error("The SSL certificate file for this domain is missing.")
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return
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# Check that the certificate is good. In order to verify with openssl, we need to split out any
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# intermediary certificates in the chain (if any) from our certificate (at the top).
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# Check that the certificate is good.
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cert = open(ssl_certificate).read()
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mycert, chaincerts = re.match(r'(-*BEGIN CERTIFICATE-*.*?-*END CERTIFICATE-*)(.*)', cert, re.S).groups()
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cert_status = check_certificate(ssl_certificate)
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# This command returns a non-zero exit status in most cases, so trap errors.
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retcode, verifyoutput = shell('check_output', [
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"openssl",
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"verify", "-verbose",
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"-purpose", "sslserver", "-policy_check",]
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+ ([] if chaincerts.strip() == "" else ["-untrusted", "/dev/stdin"])
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+ [ssl_certificate],
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input=chaincerts.encode('ascii'),
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trap=True)
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if "self signed" in verifyoutput:
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if cert_status == "SELF-SIGNED":
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fingerprint = shell('check_output', [
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"openssl",
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"x509",
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@ -216,15 +206,48 @@ def check_ssl_cert(domain, env):
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If you receive intermediate certificates, use a text editor and paste your certificate on top and then the intermediate certificates
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below it. Save the file and place it onto this machine at %s.""" % ssl_certificate)
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elif retcode == 0:
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elif cert_status == "OK":
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print_ok("SSL certificate is signed.")
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else:
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print_error("The SSL certificate has a problem:")
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print("")
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print(verifyoutput.strip())
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print(cert_status)
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print("")
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def check_certificate(ssl_certificate):
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# Use openssl verify to check the status of a certificate.
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# In order to verify with openssl, we need to split out any
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# intermediary certificates in the chain (if any) from our
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# certificate (at the top). They need to be passed separately.
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cert = open(ssl_certificate).read()
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m = re.match(r'(-*BEGIN CERTIFICATE-*.*?-*END CERTIFICATE-*)(.*)', cert, re.S)
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if m == None:
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return "The certificate file is an invalid PEM certificate."
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mycert, chaincerts = m.groups()
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# This command returns a non-zero exit status in most cases, so trap errors.
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retcode, verifyoutput = shell('check_output', [
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"openssl",
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"verify", "-verbose",
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"-purpose", "sslserver", "-policy_check",]
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+ ([] if chaincerts.strip() == "" else ["-untrusted", "/dev/stdin"])
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+ [ssl_certificate],
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input=chaincerts.encode('ascii'),
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trap=True)
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if "self signed" in verifyoutput:
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# Certificate is self-signed.
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return "SELF-SIGNED"
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elif retcode == 0:
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# Certificate is OK.
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return "OK"
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else:
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return verifyoutput.strip()
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def print_ok(message):
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print_block(message, first_line="✓ ")
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@ -22,8 +22,8 @@ if [ -d $STORAGE_ROOT/www/static ]; then mv $STORAGE_ROOT/www/static $STORAGE_RO
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mkdir -p $STORAGE_ROOT/www/default
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if [ ! -f STORAGE_ROOT/www/default/index.html ]; then
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cp conf/www_default.html $STORAGE_ROOT/www/default/index.html
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chown -R $STORAGE_USER $STORAGE_ROOT/www/default/index.html
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fi
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chown -R $STORAGE_USER $STORAGE_ROOT/www
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# Create an init script to start the PHP FastCGI daemon and keep it
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# running after a reboot. Allows us to serve Roundcube for webmail.
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@ -0,0 +1,2 @@
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#!/bin/bash
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curl -s -d POSTDATA --user $(</var/lib/mailinabox/api.key): http://127.0.0.1:10222/dns/update
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