Implemented essential functionality

MANIFEST.in

@@ -1,3 +1,5 @@
 include README.rst
 include certidude/templates/*.html
 include certidude/templates/*.svg
+include certidude/templates/*.ovpn
+include certidude/templates/*.cnf

README.rst

@@ -1,8 +1,39 @@
 Certidude
 =========
 
-Certidude is a novel X.509 Certificate Authority management tool aiming to
+Introduction
-support PKCS#11 and in far future WebCrypto
+------------
+
+Certidude is a novel X.509 Certificate Authority management tool
+with privilege isolation mechanism aiming to
+eventually support PKCS#11 and in far future WebCrypto.
+
+
+Features
+--------
+
+* Standard request, sign, revoke workflow via web interface.
+* Colored command-line interface, check out ``butterknife list``
+* OpenVPN integration, check out ``butterknife setup openvpn server`` and ``butterknife setup openvpn client``
+* Privilege isolation, separate signer process is spawned per private key isolating
+  private key use from the the web interface.
+* Certificate numbering obfuscation, certificate serial numbers are intentionally
+  randomized to avoid leaking information about business practices.
+* Server-side events support via for example nginx-push-stream-module
+
+
+TODO
+----
+
+* Refactor mailing subsystem and server-side events to use hooks.
+* Notifications via e-mail.
+* strongSwan setup integration.
+* OCSP support.
+* Deep mailbox integration, eg fetch CSR-s from mailbox via IMAP.
+* WebCrypto support, meanwhile check out `hwcrypto.js <https://github.com/open-eid/hwcrypto.js>`_.
+* Certificate push/pull, making it possible to sign offline.
+* PKCS#11 hardware token support for signatures at command-line.
+
 
 Install
 -------
@@ -11,7 +42,7 @@ To install Certidude:
 
 .. code:: bash
 
-    apt-get install python3-openssl
+    apt-get install python3 python3-dev build-essential
     pip3 install certidude
     
 
@@ -22,13 +53,100 @@ Certidude can set up CA relatively easily:
 
 .. code:: bash
 
-    certidude ca create /path/to/directory
+    certidude setup authority /path/to/directory
 
 Tweak command-line options until you meet your requirements and
-finally insert corresponding segment to your /etc/ssl/openssl.cnf
+then insert generated section to your /etc/ssl/openssl.cnf
 
 Finally serve the certificate authority via web:
 
 .. code:: bash
 
     certidude serve
+
+
+Certificate management
+----------------------
+
+Use following command to request a certificate on a machine:
+
+.. code::
+
+    certidude setup client http://certidude-hostname-or-ip:perhaps-port/api/ca-name/
+
+Use following to list signing requests, certificates and revoked certificates:
+
+.. code::
+
+    certidude list
+
+Use web interface or following to sign a certificate on Certidude server:
+
+.. code::
+
+    certidude sign client-hostname-or-common-name
+
+
+Streaming push support
+----------------------
+
+We support `nginx-push-stream-module <https://github.com/wandenberg/nginx-push-stream-module>`_,
+configure it as follows to enable real-time responses to events:
+
+.. code::
+
+    user www-data;
+    worker_processes 4;
+    pid /run/nginx.pid;
+
+    events {
+        worker_connections 768;
+        # multi_accept on;
+    }
+
+    http {
+        push_stream_shared_memory_size 32M;
+        sendfile on;
+        tcp_nopush on;
+        tcp_nodelay on;
+        keepalive_timeout 65;
+        types_hash_max_size 2048;
+        include /etc/nginx/mime.types;
+        default_type application/octet-stream;
+        access_log /var/log/nginx/access.log;
+        error_log /var/log/nginx/error.log;
+        gzip on;
+        gzip_disable "msie6";
+
+        server {
+            listen 80 default_server;
+            listen [::]:80 default_server ipv6only=on;
+            server_name localhost;
+
+            location ~ /event/publish/(.*) {
+                allow 127.0.0.1; # Allow publishing only from this IP address
+                push_stream_publisher admin;
+                push_stream_channels_path $1;
+            }
+
+            location ~ /event/subscribe/(.*) {
+                push_stream_channels_path $1;
+                push_stream_subscriber long-polling;
+            }
+
+            location /api/ {
+                proxy_pass       http://127.0.0.1:9090/api/;
+                proxy_set_header Host      $host;
+                proxy_set_header X-Real-IP $remote_addr;
+            }
+        }
+    }
+
+
+For ``butterknife serve`` export environment variables:
+
+.. code:: bash
+
+    export CERTIDUDE_EVENT_PUBLISH = "http://localhost/event/publish/%s"
+    export CERTIDUDE_EVENT_SUBSCRIBE = "http://localhost/event/subscribe/%s"
+    certidude server -p 9090

certidude/api.py

@@ -3,41 +3,51 @@ import falcon
 import os
 import json
 import types
+import urllib.request
+import click
+from time import sleep
+from certidude.wrappers import Request, Certificate
+from certidude.mailer import Mailer
+from pyasn1.codec.der import decoder
 from datetime import datetime, date
 from OpenSSL import crypto
-from jinja2 import Environment, PackageLoader
+from jinja2 import Environment, PackageLoader, Template
-env = Environment(loader=PackageLoader('certidude', 'templates'))
+
+env = Environment(loader=PackageLoader("certidude", "templates"))
 
 RE_HOSTNAME = "^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])$"
 
 def omit(**kwargs):
     return dict([(key,value) for (key, value) in kwargs.items() if value])
-    
+
 def pop_certificate_authority(func):
     def wrapped(self, req, resp, *args, **kwargs):
         kwargs["ca"] = self.config.instantiate_authority(kwargs["ca"])
         return func(self, req, resp, *args, **kwargs)
     return wrapped
 
+
 def validate_common_name(func):
     def wrapped(*args, **kwargs):
         if not re.match(RE_HOSTNAME, kwargs["cn"]):
             raise falcon.HTTPBadRequest("Invalid CN", "Common name supplied with request didn't pass the validation regex")
         return func(*args, **kwargs)
     return wrapped
-    
+
+
 class MyEncoder(json.JSONEncoder):
     def default(self, obj):
         if isinstance(obj, datetime):
-            return obj.strftime('%Y-%m-%dT%H:%M:%S.%f')[:-3] + "Z"
+            return obj.strftime("%Y-%m-%dT%H:%M:%S.%f")[:-3] + "Z"
         if isinstance(obj, date):
-            return obj.strftime('%Y-%m-%d')
+            return obj.strftime("%Y-%m-%d")
         if isinstance(obj, map):
             return tuple(obj)
         if isinstance(obj, types.GeneratorType):
             return tuple(obj)
         return json.JSONEncoder.default(self, obj)
 
+
 def serialize(func):
     """
     Falcon response serialization
@@ -51,13 +61,14 @@ def serialize(func):
         if not resp.body:
             if not req.client_accepts_json:
                 raise falcon.HTTPUnsupportedMediaType(
-                    'This API only supports the JSON media type.',
+                    "This API only supports the JSON media type.",
-                    href='http://docs.examples.com/api/json')
+                    href="http://docs.examples.com/api/json")
-            resp.set_header('Content-Type', 'application/json')
+            resp.set_header("Content-Type", "application/json")
             resp.body = json.dumps(r, cls=MyEncoder)
         return r
     return wrapped
 
+
 def templatize(path):
     template = env.get_template(path)
     def wrapper(func):
@@ -69,20 +80,30 @@ def templatize(path):
                     resp.set_header("Cache-Control", "no-cache, no-store, must-revalidate");
                     resp.set_header("Pragma", "no-cache");
                     resp.set_header("Expires", "0");
-                    resp.set_header('Content-Type', 'application/json')
+                    resp.set_header("Content-Type", "application/json")
                     resp.body = json.dumps(r, cls=MyEncoder)
                     return r
                 else:
-                    resp.set_header('Content-Type', 'text/html')
+                    resp.set_header("Content-Type", "text/html")
                     resp.body = template.render(request=req, **r)
                     return r
         return wrapped
     return wrapper
 
+
 class CertificateAuthorityBase(object):
     def __init__(self, config):
         self.config = config
 
+
+class RevocationListResource(CertificateAuthorityBase):
+    @pop_certificate_authority
+    def on_get(self, req, resp, ca):
+        resp.set_header("Content-Type", "application/x-pkcs7-crl")
+        resp.append_header("Content-Disposition", "attachment; filename=%s.crl" % ca.slug)
+        resp.body = ca.export_crl()
+
+
 class SignedCertificateDetailResource(CertificateAuthorityBase):
     @pop_certificate_authority
     @validate_common_name
@@ -92,7 +113,7 @@ class SignedCertificateDetailResource(CertificateAuthorityBase):
             raise falcon.HTTPNotFound()
         resp.stream = open(path, "rb")
         resp.append_header("Content-Disposition", "attachment; filename=%s.crt" % cn)
-        
+
     @pop_certificate_authority
     @validate_common_name
     def on_delete(self, req, resp, ca, cn):
@@ -105,17 +126,17 @@ class SignedCertificateListResource(CertificateAuthorityBase):
     def on_get(self, req, resp, ca):
         for j in authority.get_signed():
             yield omit(
-                key_type=j.key_type(),
+                key_type=j.key_type,
-                key_length=j.key_length(),
+                key_length=j.key_length,
-                subject=j.get_dn(),
+                subject=j.distinguished_name,
-                issuer=j.get_issuer_dn(),
+                cn=j.common_name,
-                cn=j.subject.CN,
+                c=j.country_code,
-                c=j.subject.C,
+                st=j.state_or_county,
-                st=j.subject.ST,
+                l=j.city,
-                l=j.subject.L,
+                o=j.organization,
-                o=j.subject.O,
+                ou=j.organizational_unit,
-                ou=j.subject.OU,
+                fingerprint=j.fingerprint)
-                fingerprint=j.get_pubkey_fingerprint())
+
 
 class RequestDetailResource(CertificateAuthorityBase):
     @pop_certificate_authority
@@ -128,22 +149,25 @@ class RequestDetailResource(CertificateAuthorityBase):
         if not os.path.exists(path):
             raise falcon.HTTPNotFound()
         resp.stream = open(path, "rb")
+        resp.append_header("Content-Type", "application/x-x509-user-cert")
         resp.append_header("Content-Disposition", "attachment; filename=%s.csr" % cn)
 
     @pop_certificate_authority
-    @validate_common_name        
+    @validate_common_name
     def on_patch(self, req, resp, ca, cn):
         """
         Sign a certificate signing request
         """
-        path = os.path.join(ca.request_dir, cn + ".pem")
+        csr = ca.get_request(cn)
-        if not os.path.exists(path):
+        cert = ca.sign(csr, overwrite=True, delete=True)
-            raise falcon.HTTPNotFound()
+        os.unlink(csr.path)
-        ca.sign(ca.get_request(cn))
         resp.body = "Certificate successfully signed"
         resp.status = falcon.HTTP_201
         resp.location = os.path.join(req.relative_uri, "..", "..", "signed", cn)
 
+    @pop_certificate_authority
+    def on_delete(self, req, resp, ca, cn):
+        ca.delete_request(cn)
 
 class RequestListResource(CertificateAuthorityBase):
     @serialize
@@ -151,46 +175,133 @@ class RequestListResource(CertificateAuthorityBase):
     def on_get(self, req, resp, ca):
         for j in ca.get_requests():
             yield omit(
-                key_type=j.key_type(),
+                key_type=j.key_type,
-                key_length=j.key_length(),
+                key_length=j.key_length,
-                subject=j.get_dn(),
+                subject=j.distinguished_name,
-                cn=j.subject.CN,
+                cn=j.common_name,
-                c=j.subject.C,
+                c=j.country_code,
-                st=j.subject.ST,
+                st=j.state_or_county,
-                l=j.subject.L,
+                l=j.city,
-                o=j.subject.O,
+                o=j.organization,
-                ou=j.subject.OU,
+                ou=j.organizational_unit,
-                fingerprint=j.get_pubkey_fingerprint())
+                fingerprint=j.fingerprint())
 
     @pop_certificate_authority
     def on_post(self, req, resp, ca):
-        
+        """
+        Submit certificate signing request (CSR) in PEM format
+        """
+
         if req.get_header("Content-Type") != "application/pkcs10":
             raise falcon.HTTPUnsupportedMediaType(
                 "This API call accepts only application/pkcs10 content type")
-        
+
-        # POTENTIAL SECURITY HOLE HERE!
+        body = req.stream.read(req.content_length)
-        # Should we sanitize input before we handle it to SSL libs?
+        csr = Request(body)
+
+        # Check if this request has been already signed and return corresponding certificte if it has been signed
         try:
-            csr = crypto.load_certificate_request(
+            cert_buf = ca.get_certificate(csr.common_name)
-                crypto.FILETYPE_PEM, req.stream.read(req.content_length))
+        except FileNotFoundError:
-        except crypto.Error:
+            pass
-            raise falcon.HTTPBadRequest("Invalid CSR", "Failed to parse request body as PEM")
+        else:
-        
+            cert = Certificate(cert_buf)
-        common_name = csr.get_subject().CN
+            if cert.pubkey == csr.pubkey:
-        
+                resp.status = falcon.HTTP_FOUND
-        if not re.match(RE_HOSTNAME, common_name):
+                resp.location = os.path.join(os.path.dirname(req.relative_uri), "signed", csr.common_name)
-            raise falcon.HTTPBadRequest("Invalid CN", "Common name supplied with CSR did not match validation regex")
+                return
-        
+
-        path = os.path.join(ca.request_dir, common_name + ".pem")
+        # TODO: check for revoked certificates and return HTTP 410 Gone
-        with open(path, "wb") as fh:
+
-            fh.write(crypto.dump_certificate_request(
+        # Process automatic signing if the IP address is whitelisted and autosigning was requested
-                crypto.FILETYPE_PEM, csr))
+        if ca.autosign_allowed(req.env["REMOTE_ADDR"]) and req.get_param("autosign"):
+            try:
+                resp.append_header("Content-Type", "application/x-x509-user-cert")
+                resp.body = ca.sign(req).dump()
+                return
+            except FileExistsError: # Certificate already exists, try to save the request
+                pass
+
+        # Attempt to save the request otherwise
+        try:
+            request = ca.store_request(body)
+        except FileExistsError:
+            raise falcon.HTTPConflict(
+                "CSR with such CN already exists",
+                "Will not overwrite existing certificate signing request, explicitly delete CSR and try again")
+
+        # Wait the certificate to be signed if waiting is requested
+        if req.get_param("wait"):
+            url_template = os.getenv("CERTIDUDE_EVENT_SUBSCRIBE")
+            if url_template:
+                # Redirect to nginx pub/sub
+                url = url_template % request.fingerprint()
+                click.echo("Redirecting to: %s"  % url)
+                resp.status = falcon.HTTP_FOUND
+                resp.append_header("Location", url)
+            else:
+                click.echo("Using dummy streaming mode, please switch to nginx in production!", err=True)
+                # Dummy streaming mode
+                while True:
+                    sleep(1)
+                    if not ca.request_exists(csr.common_name):
+                        resp.append_header("Content-Type", "application/x-x509-user-cert")
+                        resp.status = falcon.HTTP_201 # Certificate was created
+                        resp.body = ca.get_certificate(csr.common_name)
+                        break
+        else:
+            # Request was accepted, but not processed
+            resp.status = falcon.HTTP_202
+
+class CertificateStatusResource(CertificateAuthorityBase):
+    """
+    openssl ocsp -issuer CAcert_class1.pem -serial 0x<serial no in hex> -url http://localhost -CAfile cacert_both.pem
+    """
+    def on_post(self, req, resp, ca):
+        ocsp_request = req.stream.read(req.content_length)
+        for component in decoder.decode(ocsp_request):
+            click.echo(component)
+        resp.append_header("Content-Type", "application/ocsp-response")
+        resp.status = falcon.HTTP_200
+        raise NotImplementedError()
 
 class CertificateAuthorityResource(CertificateAuthorityBase):
+    @pop_certificate_authority
+    def on_get(self, req, resp, ca):
+        path = os.path.join(ca.certificate.path)
+        resp.stream = open(path, "rb")
+        resp.append_header("Content-Disposition", "attachment; filename=%s.crt" % ca.slug)
+
+class IndexResource(CertificateAuthorityBase):
     @templatize("index.html")
+    @pop_certificate_authority
     def on_get(self, req, resp, ca):
         return {
-            "authority": self.config.instantiate_authority(ca)}
+            "authority": ca }
-    
+
+class ApplicationConfigurationResource(CertificateAuthorityBase):
+    @validate_common_name
+    @pop_certificate_authority
+    def on_get(self, req, resp, ca, cn):
+        ctx = dict(
+            cn = cn,
+            certificate = ca.get_certificate(cn),
+            ca_certificate = open(ca.certificate.path, "r").read())
+        resp.append_header("Content-Type", "application/ovpn")
+        resp.append_header("Content-Disposition", "attachment; filename=%s.ovpn" % cn)
+        resp.body = Template(open("/etc/openvpn/%s.template" % ca.slug).read()).render(ctx)
+
+    @validate_common_name
+    @pop_certificate_authority
+    def on_put(self, req, resp, ca, cn=None):
+        pkey_buf, req_buf, cert_buf = ca.create_bundle(cn)
+
+        ctx = dict(
+            private_key = pkey_buf,
+            certificate = cert_buf,
+            ca_certificate = ca.certificate.dump())
+
+        resp.append_header("Content-Type", "application/ovpn")
+        resp.append_header("Content-Disposition", "attachment; filename=%s.ovpn" % cn)
+        resp.body = Template(open("/etc/openvpn/%s.template" % ca.slug).read()).render(ctx)
         

certidude/cli.py

@@ -1,54 +1,480 @@
 #!/usr/bin/python3
 # coding: utf-8
 
+import sys
+import pwd
+import random
 import socket
 import click
 import os
+import asyncore
 import time
 import os
 import re
+import logging
+import signal
+import netifaces
+import urllib.request
+from humanize import naturaltime
+from ipaddress import ip_network
+from time import sleep
 from datetime import datetime
 from OpenSSL import crypto
+from setproctitle import setproctitle
+from certidude.signer import SignServer
+from jinja2 import Environment, PackageLoader
 from certidude.wrappers import CertificateAuthorityConfig, \
-    CertificateAuthority, SerialCounter, Certificate, subject2dn
+    CertificateAuthority, Certificate, subject2dn, Request
+
+env = Environment(loader=PackageLoader("certidude", "templates"))
 
 # Big fat warning:
 # m2crypto overflows around 2030 because on 32-bit systems
 # m2crypto does not support hardware engine support (?)
 # m2crypto CRL object is pretty much useless
+
 # pyopenssl has no straight-forward methods for getting RSA key modulus
 
+# pyopenssl 0.13 bundled with Ubuntu 14.04 has no get_extension_count() for X509Req objects
+assert hasattr(crypto.X509Req(), "get_extensions"), "You're running too old version of pyopenssl, upgrade to 0.15+"
+
 # http://www.mad-hacking.net/documentation/linux/security/ssl-tls/creating-ca.xml
+# https://kjur.github.io/jsrsasign/
+# keyUsage, extendedKeyUsage - https://www.openssl.org/docs/apps/x509v3_config.html
 
 config = CertificateAuthorityConfig("/etc/ssl/openssl.cnf")
 
+# Parse command-line argument defaults from environment
+HOSTNAME = socket.gethostname()
+USERNAME = os.environ.get("USER")
+EMAIL = USERNAME + "@" + HOSTNAME
 NOW = datetime.utcnow().replace(tzinfo=None)
 
+FIRST_NAME = None
+SURNAME = None
 
-@click.command("create", help="Set up Certificate Authority in a directory")
+if os.getuid() >= 1000:
+    _, _, _, _, gecos, _, _ = pwd.getpwnam(USERNAME)
+    if " " in gecos:
+        FIRST_NAME, SURNAME = gecos.split(" ", 1)
+    else:
+        FIRST_NAME = gecos
+
+def first_nic_address():
+    """
+    Return IP address of the first network interface
+    """
+    for interface in netifaces.interfaces():
+        if interface == "lo":
+            continue
+        for iftype, addresses in netifaces.ifaddresses(interface).items():
+            if iftype != 2:
+                continue
+            for address in addresses:
+                return address.pop("addr")
+    raise ValueError("Unable to determine IP address of first NIC")
+
+def spawn_signers(kill, no_interaction):
+    """
+    Spawn processes for signers
+    """
+
+    os.umask(0o027)
+    uid = os.getuid()
+    assert uid == 0, "Not running as root"
+
+    # Preload charmap encoding for byte_string() function of pyOpenSSL
+    # in order to enable chrooting
+    "".encode("charmap")
+
+    # Process directories
+    run_dir = "/run/certidude"
+    signer_dir = os.path.join(run_dir, "signer")
+    chroot_dir = os.path.join(signer_dir, "jail")
+
+    # Prepare signer PID-s directory
+    if not os.path.exists(signer_dir):
+        click.echo("Creating: %s" % signer_dir)
+        os.makedirs(signer_dir)
+
+    # Prepare chroot directories
+    if not os.path.exists(os.path.join(chroot_dir, "dev")):
+        os.makedirs(os.path.join(chroot_dir, "dev"))
+    if not os.path.exists(os.path.join(chroot_dir, "dev", "urandom")):
+        # TODO: use os.mknod instead
+        os.system("mknod -m 444 %s c 1 9" % os.path.join(chroot_dir, "dev", "urandom"))
+
+    for ca in config.all_authorities():
+
+        pidfile = "/run/certidude/signer/%s.pid" % ca.slug
+
+        try:
+            with open(pidfile) as fh:
+                pid = int(fh.readline())
+                os.kill(pid, 0)
+                click.echo("Found process with PID %d for %s" % (pid, ca.slug))
+        except (ValueError, ProcessLookupError, FileNotFoundError):
+            pid = 0
+
+        if pid > 0:
+            if kill:
+                try:
+                    click.echo("Killing %d" % pid)
+                    os.kill(pid, signal.SIGTERM)
+                    sleep(1)
+                    os.kill(pid, signal.SIGKILL)
+                    sleep(1)
+                except ProcessLookupError:
+                    pass
+            else:
+                continue
+
+        child_pid = os.fork()
+
+        if child_pid == 0:
+            with open(pidfile, "w") as fh:
+                fh.write("%d\n" % os.getpid())
+
+            setproctitle("%s spawn %s" % (sys.argv[0], ca.slug))
+            logging.basicConfig(
+                filename="/var/log/certidude-%s.log" % ca.slug,
+                level=logging.INFO)
+            socket_path = os.path.join(signer_dir, ca.slug + ".sock")
+            click.echo("Spawned certidude signer process with PID %d at %s" % (os.getpid(), socket_path))
+            server = SignServer(socket_path, ca.private_key, ca.certificate.path,
+                ca.lifetime, ca.basic_constraints, ca.key_usage, ca.extended_key_usage)
+            asyncore.loop()
+
+def certidude_request_certificate(url, key_path, request_path, certificate_path, authority_path, common_name, org_unit, email_address=None, given_name=None, surname=None, autosign=False, wait=False, key_usage=None, extended_key_usage=None):
+    """
+    Exchange CSR for certificate using Certidude HTTP API server
+    """
+
+    # Set up URL-s
+    request_params = set()
+    if autosign:
+        request_params.add("autosign=yes")
+    if wait:
+        request_params.add("wait=forever")
+
+    if not url.endswith("/"):
+        url = url + "/"
+
+    authority_url = url + "certificate"
+    request_url = url + "request"
+
+    if request_params:
+        request_url = request_url + "?" + "&".join(request_params)
+
+    if os.path.exists(authority_path):
+        click.echo("Found CA certificate in: %s" % authority_path)
+    else:
+        if authority_url:
+            click.echo("Attempting to fetch CA certificate from %s" % authority_url)
+            try:
+                with urllib.request.urlopen(authority_url) as fh:
+                    buf = fh.read()
+                    try:
+                        cert = crypto.load_certificate(crypto.FILETYPE_PEM, buf)
+                    except crypto.Error:
+                        raise ValueError("Failed to parse PEM: %s" % buf)
+                    with open(authority_path + ".part", "wb") as oh:
+                        oh.write(buf)
+                    click.echo("Writing CA certificate to: %s" % authority_path)
+                    os.rename(authority_path + ".part", authority_path)
+            except urllib.error.HTTPError as e:
+                click.echo("Failed to fetch CA certificate, server responded with: %d %s" % (e.code, e.reason), err=True)
+                return 1
+        else:
+            raise FileNotFoundError("CA certificate not found and no URL specified")
+
+    try:
+        certificate = Certificate(open(certificate_path))
+        click.echo("Found certificate: %s" % certificate_path)
+    except FileNotFoundError:
+        try:
+            request = Request(open(request_path))
+            click.echo("Found signing request: %s" % request_path)
+        except FileNotFoundError:
+
+            # Construct private key
+            click.echo("Generating 4096-bit RSA key...")
+            key = crypto.PKey()
+            key.generate_key(crypto.TYPE_RSA, 4096)
+
+            # Dump private key
+            os.umask(0o077)
+            with open(key_path + ".part", "wb") as fh:
+                fh.write(crypto.dump_privatekey(crypto.FILETYPE_PEM, key))
+
+            # Construct CSR
+            csr = crypto.X509Req()
+            csr.set_pubkey(key)
+            request = Request(csr)
+
+            # Set subject attributes
+            request.common_name = common_name
+            if given_name:
+                request.given_name = given_name
+            if surname:
+                request.surname = surname
+            if org_unit:
+                request.organizational_unit = org_unit
+
+            # Set extensions
+            extensions = []
+            if key_usage:
+                extensions.append(("keyUsage", key_usage, True))
+            if extended_key_usage:
+                extensions.append(("extendedKeyUsage", extended_key_usage, True))
+            if email_address:
+                extensions.append(("subjectAltName", "email:" + email_address, False))
+            request.set_extensions(extensions)
+
+            # Dump CSR
+            os.umask(0o022)
+            with open(request_path + ".part", "w") as fh:
+                fh.write(request.dump())
+
+            click.echo("Writing private key to: %s" % key_path)
+            os.rename(key_path + ".part", key_path)
+            click.echo("Writing certificate signing request to: %s" % request_path)
+            os.rename(request_path + ".part", request_path)
+
+
+        with open(request_path, "rb") as fh:
+            buf = fh.read()
+            submission = urllib.request.Request(request_url, buf)
+            submission.add_header("User-Agent", "Certidude")
+            submission.add_header("Content-Type", "application/pkcs10")
+
+            click.echo("Submitting to %s, waiting for response..." % request_url)
+            try:
+                response = urllib.request.urlopen(submission)
+                buf = response.read()
+                cert = crypto.load_certificate(crypto.FILETYPE_PEM, buf)
+            except crypto.Error:
+                raise ValueError("Failed to parse PEM: %s" % buf)
+            except urllib.error.HTTPError as e:
+                if e.code == 409:
+                    click.echo("Different signing request with same CN is already present on server, server refuses to overwrite", err=True)
+                    return 2
+                else:
+                    click.echo("Failed to fetch certificate, server responded with: %d %s" % (e.code, e.reason), err=True)
+                    return 3
+            else:
+                if response.code == 202:
+                    click.echo("Server stored the request for processing (202 Accepted), but waiting was not requested, hence quitting for now", err=True)
+                    return 254
+
+            os.umask(0o022)
+            with open(certificate_path + ".part", "wb") as gh:
+                gh.write(buf)
+
+            click.echo("Writing certificate to: %s" % certificate_path)
+            os.rename(certificate_path + ".part", certificate_path)
+
+    # TODO: Validate fetched certificate against CA
+    # TODO: Check that recevied certificate CN and pubkey match
+    # TODO: Check file permissions
+
+
+@click.command("spawn", help="Run privilege isolated signer processes")
+@click.option("-k", "--kill", default=False, is_flag=True, help="Kill previous instances")
+@click.option("-n", "--no-interaction", default=True, is_flag=True, help="Don't load password protected keys")
+def certidude_spawn(**args):
+    spawn_signers(**args)
+
+
+@click.command("client", help="Setup X.509 certificates for application")
+@click.argument("url") #, help="Certidude authority endpoint URL")
+@click.option("--common-name", "-cn", default=HOSTNAME, help="Common name, '%s' by default" % HOSTNAME)
+@click.option("--org-unit", "-ou", help="Organizational unit")
+@click.option("--email-address", "-m", default=EMAIL, help="E-mail associated with the request, '%s' by default" % EMAIL)
+@click.option("--given-name", "-gn", default=FIRST_NAME, help="Given name of the person associted with the certificate, '%s' by default" % FIRST_NAME)
+@click.option("--surname", "-sn", default=SURNAME, help="Surname of the person associted with the certificate, '%s' by default" % SURNAME)
+@click.option("--key-usage", "-ku", help="Key usage attributes, none requested by default")
+@click.option("--extended-key-usage", "-eku", help="Extended key usage attributes, none requested by default")
+@click.option("--quiet", "-q", default=False, is_flag=True, help="Disable verbose output")
+@click.option("--autosign", "-s", default=False, is_flag=True, help="Request for automatic signing if available")
+@click.option("--wait", "-w", default=False, is_flag=True, help="Wait for certificate, by default return immideately")
+@click.option("--key-path", "-k", default=HOSTNAME + ".key", help="Key path, %s.key by default" % HOSTNAME)
+@click.option("--request-path", "-r", default=HOSTNAME + ".csr", help="Request path, %s.csr by default" % HOSTNAME)
+@click.option("--certificate-path", "-c", default=HOSTNAME + ".crt", help="Certificate path, %s.crt by default" % HOSTNAME)
+@click.option("--authority-path", "-a", default="ca.crt", help="Certificate authority certificate path, ca.crt by default")
+def certidude_setup_client(quiet, **kwargs):
+    return certidude_request_certificate(**kwargs)
+
+
+@click.command("server", help="Set up OpenVPN server")
+@click.argument("url")
+@click.option("--common-name", "-cn", default=HOSTNAME, help="Common name, %s by default" % HOSTNAME)
+@click.option("--org-unit", "-ou", help="Organizational unit")
+@click.option("--email-address", "-m", default=EMAIL, help="E-mail associated with the request, '%s' by default" % EMAIL)
+@click.option("--subnet", "-s", default="192.168.33.0/24", type=ip_network, help="OpenVPN subnet, 192.168.33.0/24 by default")
+@click.option("--local", "-l", default=first_nic_address(), help="OpenVPN listening address, %s" % first_nic_address())
+@click.option("--port", "-p", default=1194, type=click.IntRange(1,60000), help="OpenVPN listening port, 1194 by default")
+@click.option('--proto', "-t", default="udp", type=click.Choice(['udp', 'tcp']), help="OpenVPN transport protocol, UDP by default")
+@click.option("--config", "-o",
+    default="/etc/openvpn/site-to-client.conf",
+    type=click.File(mode="w", atomic=True, lazy=True),
+    help="OpenVPN configuration file")
+@click.option("--directory", "-d", default="/etc/openvpn/keys", help="Directory for keys, /etc/openvpn/keys by default")
+@click.option("--key-path", "-k", default=HOSTNAME + ".key", help="Key path, %s.key relative to --directory by default" % HOSTNAME)
+@click.option("--request-path", "-r", default=HOSTNAME + ".csr", help="Request path, %s.csr relative to --directory by default" % HOSTNAME)
+@click.option("--certificate-path", "-c", default=HOSTNAME + ".crt", help="Certificate path, %s.crt relative to --directory by default" % HOSTNAME)
+@click.option("--authority-path", "-a", default="ca.crt", help="Certificate authority certificate path, ca.crt relative to --dir by default")
+def certidude_setup_openvpn_server(url, config, subnet, email_address, common_name, org_unit, directory, key_path, request_path, certificate_path, authority_path, local, proto, port):
+    # TODO: Intelligent way of getting last IP address in the subnet
+    subnet_first = None
+    subnet_last = None
+    subnet_second = None
+    for addr in subnet.hosts():
+        if not subnet_first:
+            subnet_first = addr
+            continue
+        if not subnet_second:
+            subnet_second = addr
+        subnet_last = addr
+
+    if directory:
+        if not os.path.exists(directory):
+            click.echo("Making directory: %s" % directory)
+            os.makedirs(directory)
+        key_path = os.path.join(directory, key_path)
+        certificate_path = os.path.join(directory, certificate_path)
+        request_path = os.path.join(directory, request_path)
+        authority_path = os.path.join(directory, authority_path)
+
+    if not os.path.exists(certificate_path):
+        click.echo("As OpenVPN server certificate needs specific key usage extensions please")
+        click.echo("use following command to sign on Certidude server instead of web interface:")
+        click.echo()
+        click.echo("  certidude sign %s" % common_name)
+
+    retval = certidude_request_certificate(
+        url,
+        key_path,
+        request_path,
+        certificate_path,
+        authority_path,
+        common_name,
+        org_unit,
+        email_address,
+        key_usage="nonRepudiation,digitalSignature,keyEncipherment",
+        extended_key_usage="serverAuth",
+        wait=True)
+
+    if retval:
+        return retval
+
+    # TODO: Add dhparam
+    config.write(env.get_template("site-to-client.ovpn").render(locals()))
+
+    click.echo("Generated %s" % config.name)
+    click.echo()
+    click.echo("Inspect newly created %s and start OpenVPN service:" % config.name)
+    click.echo()
+    click.secho("  service openvpn restart", bold=True)
+    click.echo()
+
+
+@click.command("client", help="Set up OpenVPN client")
+@click.argument("url")
+@click.argument("remote")
+@click.option('--proto', "-t", default="udp", type=click.Choice(['udp', 'tcp']), help="OpenVPN transport protocol, UDP by default")
+@click.option("--common-name", "-cn", default=HOSTNAME, help="Common name, %s by default" % HOSTNAME)
+@click.option("--org-unit", "-ou", help="Organizational unit")
+@click.option("--email-address", "-m", default=EMAIL, help="E-mail associated with the request, '%s' by default" % EMAIL)
+@click.option("--config", "-o",
+    default="/etc/openvpn/client-to-site.conf",
+    type=click.File(mode="w", atomic=True, lazy=True),
+    help="OpenVPN configuration file")
+@click.option("--directory", "-d", default="/etc/openvpn/keys", help="Directory for keys, /etc/openvpn/keys by default")
+@click.option("--key-path", "-k", default=HOSTNAME + ".key", help="Key path, %s.key relative to --directory by default" % HOSTNAME)
+@click.option("--request-path", "-r", default=HOSTNAME + ".csr", help="Request path, %s.csr relative to --directory by default" % HOSTNAME)
+@click.option("--certificate-path", "-c", default=HOSTNAME + ".crt", help="Certificate path, %s.crt relative to --directory by default" % HOSTNAME)
+@click.option("--authority-path", "-a", default="ca.crt", help="Certificate authority certificate path, ca.crt relative to --dir by default")
+def certidude_setup_openvpn_client(url, config, email_address, common_name, org_unit, directory, key_path, request_path, certificate_path, authority_path, proto, remote):
+
+    if directory:
+        if not os.path.exists(directory):
+            click.echo("Making directory: %s" % directory)
+            os.makedirs(directory)
+        key_path = os.path.join(directory, key_path)
+        certificate_path = os.path.join(directory, certificate_path)
+        request_path = os.path.join(directory, request_path)
+        authority_path = os.path.join(directory, authority_path)
+
+    retval = certidude_request_certificate(
+        url,
+        key_path,
+        request_path,
+        certificate_path,
+        authority_path,
+        common_name,
+        org_unit,
+        email_address,
+        wait=True)
+
+    if retval:
+        return retval
+
+    # TODO: Add dhparam
+    config.write(env.get_template("client-to-site.ovpn").render(locals()))
+
+    click.echo("Generated %s" % config.name)
+    click.echo()
+    click.echo("Inspect newly created %s and start OpenVPN service:" % config.name)
+    click.echo()
+    click.echo("  service openvpn restart")
+    click.echo()
+
+
+@click.command("authority", help="Set up Certificate Authority in a directory")
+@click.option("--group", "-g", default="certidude", help="Group for file permissions, certidude by default")
 @click.option("--parent", "-p", help="Parent CA, none by default")
-@click.option("--common-name", "-cn", default=socket.gethostname(), help="Common name, hostname by default")
+@click.option("--common-name", "-cn", default=HOSTNAME, help="Common name, hostname by default")
 @click.option("--country", "-c", default="ee", help="Country, Estonia by default")
 @click.option("--state", "-s", default="Harjumaa", help="State or country, Harjumaa by default")
 @click.option("--locality", "-l", default="Tallinn", help="City or locality, Tallinn by default")
-@click.option("--lifetime", default=20, help="Lifetime in years")
+@click.option("--lifetime", default=20*365, help="Lifetime in days, 7300 days (20 years) by default")
 @click.option("--organization", "-o", default="Example LLC", help="Company or organization name")
 @click.option("--organizational-unit", "-ou", default="Certification Department")
 @click.option("--crl-age", default=1, help="CRL expiration age, 1 day by default")
 @click.option("--pkcs11", default=False, is_flag=True, help="Use PKCS#11 token instead of files")
+@click.option("--crl-distribution-url", default=None, help="CRL distribution URL")
+@click.option("--ocsp-responder-url", default=None, help="OCSP responder URL")
+@click.option("--email-address", default=EMAIL, help="CA e-mail address")
+@click.option("--inbox", default="imap://user:pass@host:port/INBOX", help="Inbound e-mail server")
+@click.option("--outbox", default="smtp://localhost", help="Outbound e-mail server")
 @click.argument("directory")
-def ca_create(parent, country, state, locality, organization, organizational_unit, common_name, directory, crl_age, lifetime, pkcs11):
+def certidude_setup_authority(parent, country, state, locality, organization, organizational_unit, common_name, directory, crl_age, lifetime, pkcs11, group, crl_distribution_url, ocsp_responder_url, email_address, inbox, outbox):
+    logging.info("Creating certificate authority in %s", directory)
+    _, _, uid, gid, gecos, root, shell = pwd.getpwnam(group)
+    os.setgid(gid)
+
     click.echo("Generating 4096-bit RSA key...")
-    
+
     if pkcs11:
         raise NotImplementedError("Hardware token support not yet implemented!")
     else:
         key = crypto.PKey()
         key.generate_key(crypto.TYPE_RSA, 4096)
+
     slug = os.path.basename(directory)
-    crl_distribution_points = "URI:http://%s/api/%s/revoked/" % (common_name, slug)
+
+    if not crl_distribution_url:
+        crl_distribution_url = "http://%s/api/%s/revoked/" % (common_name, slug)
+
+    # File paths
+    ca_key = os.path.join(directory, "ca_key.pem")
+    ca_crt = os.path.join(directory, "ca_crt.pem")
+    ca_crl = os.path.join(directory, "ca_crl.pem")
+    crl_distribution_points = "URI:%s" % crl_distribution_url
+
     ca = crypto.X509()
-    ca.set_version(3)
+    #ca.set_version(3) # breaks gcr-viewer?!
     ca.set_serial_number(1)
     ca.get_subject().CN = common_name
     ca.get_subject().C = country
@@ -57,14 +483,14 @@ def ca_create(parent, country, state, locality, organization, organizational_uni
     ca.get_subject().O = organization
     ca.get_subject().OU = organizational_unit
     ca.gmtime_adj_notBefore(0)
-    ca.gmtime_adj_notAfter(lifetime * 365 * 24 * 60 * 60)
+    ca.gmtime_adj_notAfter(lifetime * 24 * 60 * 60)
     ca.set_issuer(ca.get_subject())
     ca.set_pubkey(key)
     ca.add_extensions([
         crypto.X509Extension(
             b"basicConstraints",
             True,
-            b"CA:TRUE, pathlen:0"),
+            b"CA:TRUE"),
         crypto.X509Extension(
             b"keyUsage",
             True,
@@ -80,74 +506,170 @@ def ca_create(parent, country, state, locality, organization, organizational_uni
             crl_distribution_points.encode("ascii"))
     ])
 
+    if email_address:
+        subject_alt_name = "email:%s" % email_address
+        ca.add_extensions([
+            crypto.X509Extension(
+                b"subjectAltName",
+                False,
+                subject_alt_name.encode("ascii"))
+        ])
+
+    if not ocsp_responder_url:
+        ocsp_responder_url = "http://%s/api/%s/ocsp/" % (common_name, slug)
+        authority_info_access = "OCSP;URI:%s" % ocsp_responder_url
+        ca.add_extensions([
+            crypto.X509Extension(
+                b"authorityInfoAccess",
+                False,
+                authority_info_access.encode("ascii"))
+        ])
+
     click.echo("Signing %s..." % subject2dn(ca.get_subject()))
+
+    # openssl x509 -in ca_crt.pem -outform DER | sha1sum
+    # openssl x509 -fingerprint -in ca_crt.pem
+
     ca.sign(key, "sha1")
-    
+
+    os.umask(0o027)
     if not os.path.exists(directory):
         os.makedirs(directory)
+
+    os.umask(0o007)
+
     for subdir in ("signed", "requests", "revoked"):
         if not os.path.exists(os.path.join(directory, subdir)):
             os.mkdir(os.path.join(directory, subdir))
-    with open(os.path.join(directory, "ca_key.pem"), "wb") as fh:
+    with open(ca_crl, "wb") as fh:
-        fh.write(crypto.dump_privatekey(crypto.FILETYPE_PEM, key))
-    with open(os.path.join(directory, "ca_crt.pem"), "wb") as fh:
-        fh.write(crypto.dump_certificate(crypto.FILETYPE_PEM, ca))
-    with open(os.path.join(directory, "ca_crl.pem"), "wb") as fh:
         crl = crypto.CRL()
         fh.write(crl.export(ca, key, days=crl_age))
     with open(os.path.join(directory, "serial"), "w") as fh:
         fh.write("1")
-        
 
+    os.umask(0o027)
+    with open(ca_crt, "wb") as fh:
+        fh.write(crypto.dump_certificate(crypto.FILETYPE_PEM, ca))
+
+
+    os.umask(0o077)
+    with open(ca_key, "wb") as fh:
+        fh.write(crypto.dump_privatekey(crypto.FILETYPE_PEM, key))
+
+    click.echo("Insert following to /etc/ssl/openssl.cnf:")
     click.echo()
-    click.echo("Add following to your /etc/ssl/openssl.cnf:")
+    click.secho(env.get_template("openssl.cnf").render(locals()), fg="blue")
-    click.echo()
-    click.echo("[CA_%s]" % slug)
-    click.echo("dir = %s" % directory)
-    click.echo("private_key = $dir/ca_key.pem")
-    click.echo("certificate = $dir/ca_crt.pem")
-    click.echo("new_certs_dir = $dir/requests/")
-    click.echo("revoked_certs_dir = $dir/revoked/")
-    click.echo("certs = $dir/signed/")
-    click.echo("crl = $dir/ca_crl.pem")
-    click.echo("serial = $dir/serial")
-    click.echo("crlDistributionPoints = %s" % crl_distribution_points)
 
     click.echo()
     click.echo("Use following commands to inspect the newly created files:")
     click.echo()
-    click.echo("  openssl crl -inform PEM -text -noout -in %s" % os.path.join(directory, "ca_crl.pem"))
+    click.echo("  openssl crl -inform PEM -text -noout -in %s" % ca_crl)
-    click.echo("  openssl x509 -in %s -text -noout" % os.path.join(directory, "ca_crt.pem"))
+    click.echo("  openssl x509 -text -noout -in %s" % ca_crt)
-    click.echo("  openssl rsa -in %s -check" % os.path.join(directory, "ca_key.pem"))
+    click.echo("  openssl rsa -check -in %s" % ca_key)
+    click.echo("  openssl verify -CAfile %s %s" % (ca_crt, ca_crt))
+    click.echo()
+    click.echo("Use following to launch privilege isolated signer processes:")
+    click.echo()
+    click.echo("  certidude spawn")
     click.echo()
     click.echo("Use following command to serve CA read-only:")
     click.echo()
     click.echo("  certidude serve")
-    
-@click.command("list", help="List Certificate Authorities")
-def ca_list():
-    for ca in config.all_authorities():
-        click.echo("Certificate authority '%s'" % ca.certificate.get_dn())
 
-        if ca.certificate.not_before < NOW and ca.certificate.not_after > NOW:
+
-            click.echo("  ✓ Certificate valid %s" % (ca.certificate.not_after - NOW))
+@click.command("list", help="List certificates")
-        elif NOW > ca.certificate.not_after:
+@click.argument("ca", nargs=-1)
-            click.echo("  ✗ Certificate expired")
+@click.option("--show-key-type", "-k", default=False, is_flag=True, help="Show key type and length")
+@click.option("--show-path", "-p", default=False, is_flag=True, help="Show filesystem paths")
+@click.option("--show-extensions", "-e", default=False, is_flag=True, help="Show X.509 Certificate Extensions")
+def certidude_list(ca, show_key_type, show_extensions, show_path):
+    from pycountry import countries
+    def dump_common(j):
+        if show_path:
+            click.echo(" |    |   Path: %s" % j.path)
+
+        person = [j for j in (j.given_name, j.surname) if j]
+        if person:
+            click.echo(" |    |   Associated person: %s" % " ".join(person) + (" <%s>" % j.email_address if j.email_address else ""))
+        elif j.email_address:
+            click.echo(" |    |   Associated e-mail: " + j.email_address)
+
+        bits = [j for j in (
+            countries.get(alpha2=j.country_code.upper()).name if
+            j.country_code else "",
+            j.state_or_county,
+            j.city,
+            j.organization,
+            j.organizational_unit) if j]
+        if bits:
+            click.echo(" |    |   Organization: %s" % ", ".join(bits))
+
+        if show_key_type:
+            click.echo(" |    |   Key type: %s-bit %s" % (j.key_length, j.key_type))
+
+        if show_extensions:
+            for key, value, data in j.extensions:
+                click.echo((" |    |   Extension " + key + ":").ljust(50) + " " + value)
+        elif j.key_usage:
+            click.echo(" |    |   Key usage: " + j.key_usage)
+        click.echo(" |    |")
+
+    for ca in config.all_authorities():
+        click.echo("Certificate authority " + click.style(ca.slug, fg="blue"))
+#        if ca.certificate.email_address:
+#            click.echo("  \u2709 %s" % ca.certificate.email_address)
+
+        if ca.certificate.signed < NOW and ca.certificate.expires > NOW:
+            print(ca.certificate.expires)
+            click.echo(" | \u2713 Certificate: " + click.style("valid", fg="green") + ", %s" % ca.certificate.expires)
+        elif NOW > ca.certificate.expires:
+            click.echo(" | \u2717 Certificate: " + click.style("expired", fg="red"))
         else:
-            click.echo("  ✗ Certificate authority not valid yet")
+            click.echo(" | \u2717 Certificate: " + click.style("not valid yet", fg="red"))
-        
+
         if os.path.exists(ca.private_key):
-            click.echo("  ✓ Private key %s okay" % ca.private_key)
+            click.echo(" | \u2713 Private key " + ca.private_key + ": " + click.style("okay", fg="green"))
+            # TODO: Check permissions
         else:
-            click.echo("  ✗ Private key %s does not exist" % ca.private_key)
+            click.echo(" | \u2717 Private key " + ca.private_key + ": " + click.style("does not exist", fg="red"))
-            
+
         if os.path.isdir(ca.signed_dir):
-            click.echo("  ✓ Signed certificates directory %s okay" % ca.signed_dir)
+            click.echo(" | \u2713 Signed certificates directory " + ca.signed_dir + ": " + click.style("okay", fg="green"))
         else:
-            click.echo("  ✗ Signed certificates directory %s okay" % ca.signed_dir)
+            click.echo(" | \u2717 Signed certificates directory " + ca.signed_dir + ": " + click.style("does not exist", fg="red"))
-            
+
-        click.echo("  Revoked certificates directory: %s" % ca.revoked_dir)
+        if ca.revoked_dir:
-        click.echo("  Revocation list: %s" % ca.revocation_list)
+            click.echo(" |   Revoked certificates directory: %s" % ca.revoked_dir)
+
+        click.echo(" +-- Pending requests")
+
+        for j in ca.get_requests():
+            click.echo(" |    +-- Request " + click.style(j.common_name, fg="blue"))
+            click.echo(" |    |   Submitted: %s, %s" % (naturaltime(j.created), j.created))
+            dump_common(j)
+
+        click.echo(" +-- Signed certificates")
+
+        for j in ca.get_signed():
+            click.echo(" |    +-- Certificate " + click.style(j.common_name, fg="blue") + " " + click.style(":".join(re.findall("\d\d", j.serial_number)), fg="white"))
+
+            if j.signed < NOW and j.expires > NOW:
+                click.echo(" |    | \u2713 Certificate " + click.style("valid", fg="green") + " " + naturaltime(j.expires))
+            elif NOW > j.expires:
+                click.echo(" |    | \u2717 Certificate " + click.style("expired", fg="red") + " " + naturaltime(j.expires))
+            else:
+                click.echo(" |    | \u2717 Certificate " + click.style("not valid yet", fg="red"))
+            dump_common(j)
+
+        click.echo(" +-- Revocations")
+
+        for j in ca.get_revoked():
+            click.echo(" |    +-- Revocation " + click.style(j.common_name, fg="blue") + " " + click.style(":".join(re.findall("\d\d", j.serial_number)), fg="white"))
+     #       click.echo(" |    |   Serial: %s" % ":".join(re.findall("\d\d", j.serial_number)))
+            if show_path:
+                click.echo(" |    |   Path: %s" % j.path)
+            click.echo(" |    |   Revoked: %s%s" % (naturaltime(NOW-j.changed), click.style(", %s" % j.changed, fg="white")))
+            dump_common(j)
 
         click.echo()
 
@@ -155,8 +677,9 @@ def ca_list():
 @click.argument("ca")
 @config.pop_certificate_authority()
 def cert_list(ca):
+
     mapping = {}
-    
+
     click.echo("Listing certificates for: %s" % ca.certificate.subject.CN)
 
     for serial, reason, timestamp in ca.get_revoked():
@@ -164,8 +687,8 @@ def cert_list(ca):
 
     for certificate in ca.get_signed():
         mapping[certificate.serial] = certificate, None
-        
+
-    for serial, (certificate, reason) in sorted(mapping.items(), key=lambda j:j[0]):            
+    for serial, (certificate, reason) in sorted(mapping.items(), key=lambda j:j[0]):
         if not reason:
             click.echo("  %03d. %s %s" % (serial, certificate.subject.CN, (certificate.not_after-NOW)))
         else:
@@ -174,12 +697,51 @@ def cert_list(ca):
     for request in ca.get_requests():
         click.echo("  ⌛  %s" % request.subject.CN)
 
+@click.command("sign", help="Sign certificates")
+@click.argument("common_name")
+@click.option("--overwrite", "-o", default=False, is_flag=True, help="Revoke valid certificate with same CN")
+@click.option("--lifetime", "-l", help="Lifetime")
+def certidude_sign(common_name, overwrite, lifetime):
+    def iterate():
+        for ca in config.all_authorities():
+            for request in ca.get_requests():
+                if request.common_name != common_name:
+                    continue
+                print(request.fingerprint(), request.common_name, request.path, request.key_usage)
+                yield ca, request
+
+    results = tuple(iterate())
+    click.echo()
+
+    click.echo("Press Ctrl-C to cancel singing these requests...")
+    sys.stdin.readline()
+
+    for ca, request in results:
+        if request.signable:
+            # Sign via signer process
+            cert = ca.sign(request)
+        else:
+            # Sign directly using private key
+            cert = ca.sign2(request, overwrite, True, lifetime)
+        os.unlink(request.path)
+        click.echo("Signed %s" % cert.distinguished_name)
+        for key, value, data in cert.extensions:
+            click.echo("Added extension %s: %s" % (key, value))
+        click.echo()
+
+
 @click.command("serve", help="Run built-in HTTP server")
-@click.option("-u", "--user", default=None, help="Run as user")
+@click.option("-u", "--user", default="certidude", help="Run as user")
 @click.option("-p", "--port", default=80, help="Listen port")
 @click.option("-l", "--listen", default="0.0.0.0", help="Listen address")
 @click.option("-s", "--enable-signature", default=False, is_flag=True, help="Allow signing operations with private key of CA")
-def serve(user, port, listen, enable_signature):
+def certidude_serve(user, port, listen, enable_signature):
+    spawn_signers(kill=False, no_interaction=False)
+
+    logging.basicConfig(
+        filename='/var/log/certidude.log',
+        level=logging.DEBUG)
+
     click.echo("Serving API at %s:%d" % (listen, port))
     import pwd
     import falcon
@@ -187,18 +749,24 @@ def serve(user, port, listen, enable_signature):
     from socketserver import ThreadingMixIn
     from certidude.api import CertificateAuthorityResource, \
         RequestDetailResource, RequestListResource, \
-        SignedCertificateDetailResource, SignedCertificateListResource
+        SignedCertificateDetailResource, SignedCertificateListResource, \
+        RevocationListResource, IndexResource, ApplicationConfigurationResource, \
+        CertificateStatusResource
 
-    class ThreadingWSGIServer(ThreadingMixIn, WSGIServer): 
+    class ThreadingWSGIServer(ThreadingMixIn, WSGIServer):
         pass
     click.echo("Listening on %s:%d" % (listen, port))
-    
+
     app = falcon.API()
+    app.add_route("/api/{ca}/ocsp/", CertificateStatusResource(config))
+    app.add_route("/api/{ca}/signed/{cn}/openvpn", ApplicationConfigurationResource(config))
+    app.add_route("/api/{ca}/certificate/", CertificateAuthorityResource(config))
+    app.add_route("/api/{ca}/revoked/", RevocationListResource(config))
     app.add_route("/api/{ca}/signed/{cn}/", SignedCertificateDetailResource(config))
     app.add_route("/api/{ca}/signed/", SignedCertificateListResource(config))
     app.add_route("/api/{ca}/request/{cn}/", RequestDetailResource(config))
     app.add_route("/api/{ca}/request/", RequestListResource(config))
-    app.add_route("/api/{ca}/", CertificateAuthorityResource(config))
+    app.add_route("/api/{ca}/", IndexResource(config))
     httpd = make_server(listen, port, app, ThreadingWSGIServer)
     if user:
         _, _, uid, gid, gecos, root, shell = pwd.getpwnam(user)
@@ -208,23 +776,27 @@ def serve(user, port, listen, enable_signature):
         click.echo("Switching to user %s (uid=%d, gid=%d)" % (user, uid, gid))
         os.setgid(gid)
         os.setuid(uid)
+        os.umask(0o007)
     elif os.getuid() == 0:
         click.echo("Warning: running as root, this is not reccommended!")
     httpd.serve_forever()
 
-@click.group(help="Certificate Authority management")
+@click.group("openvpn", help="OpenVPN helpers")
-def ca(): pass
+def certidude_setup_openvpn(): pass
 
-@click.group(help="Certificate management")
+@click.group("setup", help="Getting started section")
-def cert(): pass
+def certidude_setup(): pass
-
-cert.add_command(cert_list)
-ca.add_command(ca_create)
-ca.add_command(ca_list)
 
 @click.group()
 def entry_point(): pass
 
-entry_point.add_command(ca)
+certidude_setup_openvpn.add_command(certidude_setup_openvpn_server)
-entry_point.add_command(cert)
+certidude_setup_openvpn.add_command(certidude_setup_openvpn_client)
-entry_point.add_command(serve)
+certidude_setup.add_command(certidude_setup_authority)
+certidude_setup.add_command(certidude_setup_openvpn)
+certidude_setup.add_command(certidude_setup_client)
+entry_point.add_command(certidude_setup)
+entry_point.add_command(certidude_serve)
+entry_point.add_command(certidude_spawn)
+entry_point.add_command(certidude_sign)
+entry_point.add_command(certidude_list)

certidude/mailer.py

@@ -0,0 +1,104 @@
+
+import os
+import smtplib
+from time import sleep
+from jinja2 import Environment, PackageLoader
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+from urllib.parse import urlparse
+
+class Mailer(object):
+    def __init__(self, url):
+        scheme, netloc, path, params, query, fragment = urlparse(url)
+        scheme = scheme.lower()
+
+        if path:
+            raise ValueError("Path for URL not supported")
+        if params:
+            raise ValueError("Parameters for URL not supported")
+        if query:
+            raise ValueError("Query for URL not supported")
+        if fragment:
+            raise ValueError("Fragment for URL not supported")
+
+
+        self.username = None
+        self.password = ""
+
+        if scheme == "smtp":
+            self.secure = False
+            self.port = 25
+        elif scheme == "smtps":
+            self.secure = True
+            self.port = 465
+        else:
+            raise ValueError("Unknown scheme '%s', currently SMTP and SMTPS are only supported" % scheme)
+
+        if "@" in netloc:
+            credentials, netloc = netloc.split("@")
+
+            if ":" in credentials:
+                self.username, self.password = credentials.split(":")
+            else:
+                self.username = credentials
+
+        if ":" in netloc:
+            self.server, port_str = netloc.split(":")
+            self.port = int(port_str)
+        else:
+            self.server = netloc
+
+        self.env = Environment(loader=PackageLoader("certidude", "email_templates"))
+        self.conn = None
+
+    def reconnect(self):
+        # Gmail employs some sort of IPS
+        # https://accounts.google.com/DisplayUnlockCaptcha
+        print("Connecting to:", self.server, self.port)
+        self.conn = smtplib.SMTP(self.server, self.port)
+        if self.secure:
+            self.conn.starttls()
+        if self.username and self.password:
+            self.conn.login(self.username, self.password)
+
+    def enqueue(self, sender, recipients, subject, template, **context):
+        self.send(sender, recipients, subject, template, **context)
+
+
+    def send(self, sender, recipients, subject, template, **context):
+
+        recipients = [j for j in recipients if j]
+
+        if not recipients:
+            print("No recipients to send e-mail to!")
+            return
+        print("Sending e-mail to:", recipients, "body follows:")
+
+        msg = MIMEMultipart("alternative")
+        msg["Subject"] = subject
+        msg["From"] = sender
+        msg["To"] = ", ".join(recipients)
+
+        text = self.env.get_template(template + ".txt").render(context)
+        html = self.env.get_template(template + ".html").render(context)
+
+        print(text)
+
+        part1 = MIMEText(text, "plain")
+        part2 = MIMEText(html, "html")
+
+        msg.attach(part1)
+        msg.attach(part2)
+
+        backoff = 1
+        while True:
+            try:
+                if not self.conn:
+                    self.reconnect()
+                self.conn.sendmail(sender, recipients, msg.as_string())
+                return
+            except smtplib.SMTPServerDisconnected:
+                print("Connection to %s unexpectedly closed, probably TCP timeout, backing off for %d second" % (self.server, backoff))
+                self.reconnect()
+                backoff = backoff * 2
+                sleep(backoff)

certidude/signer.py

@@ -0,0 +1,203 @@
+
+
+import random
+import pwd
+import socket
+import os
+import asyncore
+import asynchat
+from datetime import datetime
+from OpenSSL import crypto
+
+"""
+Signer processes are spawned per private key.
+Private key should only be readable by root.
+Signer process starts up as root, reads private key,
+drops privileges and awaits for opcodes (sign-request, export-crl) at UNIX domain socket
+under /run/certidude/signer/
+The main motivation behind the concept is to mitigate private key leaks
+by confining it to a separate process.
+
+Note that signer process uses basicConstraints, keyUsage and extendedKeyUsage
+attributes from openssl.cnf via CertificateAuthority wrapper class.
+Hence it's possible only to sign such certificates via the signer process,
+making it hard to take advantage of hacked Certidude server, eg. being able to sign
+certificate authoirty (basicConstraints=CA:TRUE) or
+TLS server certificates (extendedKeyUsage=serverAuth).
+"""
+
+EXTENSION_WHITELIST = set(["subjectAltName"])
+
+def raw_sign(private_key, ca_cert, request, basic_constraints, lifetime, key_usage=None, extended_key_usage=None):
+        """
+        Sign certificate signing request directly with private key assuming it's readable by the process
+        """
+
+        cert = crypto.X509()
+
+
+        cert.set_pubkey(request.get_pubkey())
+
+        # TODO: Assert openssl.cnf policy for subject attributes
+#        if request.get_subject().O != ca_cert.get_subject().O:
+#            raise ValueError("Orgnization name mismatch!")
+#        if request.get_subject().C != ca_cert.get_subject().C:
+#            raise ValueError("Country mismatch!")
+
+        # Copy attributes from CA
+        cert.get_subject().C  = ca_cert.get_subject().C
+        cert.get_subject().ST  = ca_cert.get_subject().ST
+        cert.get_subject().L  = ca_cert.get_subject().L
+        cert.get_subject().O  = ca_cert.get_subject().O
+
+        # Copy attributes from request
+        cert.get_subject().CN = request.get_subject().CN
+        req_subject = request.get_subject()
+        if hasattr(req_subject, "OU") and req_subject.OU:
+            cert.get_subject().OU = req_subject.OU
+
+        # Copy e-mail, key usage, extended key from request
+        for extension in request.get_extensions():
+            cert.add_extensions([extension])
+
+        # TODO: Set keyUsage and extendedKeyUsage defaults if none has been provided in the request
+
+        # Override basic constraints if nececssary
+        if basic_constraints:
+            cert.add_extensions([
+                crypto.X509Extension(
+                    b"basicConstraints",
+                    True,
+                    basic_constraints.encode("ascii"))])
+
+        if key_usage:
+            try:
+                cert.add_extensions([
+                    crypto.X509Extension(
+                        b"keyUsage",
+                        True,
+                        key_usage.encode("ascii"))])
+            except crypto.Error:
+                raise ValueError("Invalid value '%s' for keyUsage attribute" % key_usage)
+
+        if extended_key_usage:
+            cert.add_extensions([
+                crypto.X509Extension(
+                    b"extendedKeyUsage",
+                    True,
+                    extended_key_usage.encode("ascii"))])
+
+        # Set certificate lifetime
+        cert.gmtime_adj_notBefore(0)
+        cert.gmtime_adj_notAfter(lifetime * 24 * 60 * 60)
+
+        # Generate serial from 0x10000000000000000000 to 0xffffffffffffffffffff
+        cert.set_serial_number(random.randint(
+            0x1000000000000000000000000000000000000000,
+            0xffffffffffffffffffffffffffffffffffffffff))
+        cert.sign(private_key, 'sha1')
+        return cert
+
+
+class SignHandler(asynchat.async_chat):
+    def __init__(self, sock, server):
+        asynchat.async_chat.__init__(self, sock=sock)
+        self.buffer = []
+        self.set_terminator(b"\n\n")
+        self.server = server
+
+    def parse_command(self, cmd, body=""):
+
+        if cmd == "export-crl":
+            """
+            Generate CRL object based on certificate serial number and revocation timestamp
+            """
+            crl = crypto.CRL()
+
+            if body:
+                for line in body.split("\n"):
+                    serial_number, timestamp = line.split(":")
+                    # TODO: Assert serial against regex
+                    revocation = crypto.Revoked()
+                    revocation.set_rev_date(datetime.fromtimestamp(int(timestamp)).strftime("%Y%m%d%H%M%SZ").encode("ascii"))
+                    revocation.set_reason(b"keyCompromise")
+                    revocation.set_serial(serial_number.encode("ascii"))
+                    crl.add_revoked(revocation)
+
+            self.send(crl.export(
+                self.server.certificate,
+                self.server.private_key,
+                crypto.FILETYPE_PEM))
+
+        elif cmd == "ocsp-request":
+            NotImplemented # TODO: Implement OCSP
+
+        elif cmd == "sign-request":
+            request = crypto.load_certificate_request(crypto.FILETYPE_PEM, body)
+
+            for e in request.get_extensions():
+                key = e.get_short_name().decode("ascii")
+                if key not in EXTENSION_WHITELIST:
+                    raise ValueError("Certificte Signing Request contains extension '%s' which is not whitelisted" % key)
+
+            # TODO: Potential exploits during PEM parsing?
+            cert = raw_sign(
+                self.server.private_key,
+                self.server.certificate,
+                request,
+                basic_constraints=self.server.basic_constraints,
+                key_usage=self.server.key_usage,
+                extended_key_usage=self.server.extended_key_usage,
+                lifetime=self.server.lifetime)
+            self.send(crypto.dump_certificate(crypto.FILETYPE_PEM, cert))
+        else:
+            raise NotImplementedError("Unknown command: %s" % cmd)
+
+        self.close_when_done()
+
+    def found_terminator(self):
+        args = (b"".join(self.buffer)).decode("ascii").split("\n", 1)
+        self.parse_command(*args)
+        self.buffer = []
+
+    def collect_incoming_data(self, data):
+        self.buffer.append(data)
+
+
+class SignServer(asyncore.dispatcher):
+    def __init__(self, socket_path, private_key, certificate, lifetime, basic_constraints, key_usage, extended_key_usage):
+        asyncore.dispatcher.__init__(self)
+
+        # Bind to sockets
+        if os.path.exists(socket_path):
+            os.unlink(socket_path)
+        os.umask(0o007)
+        self.create_socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        self.bind(socket_path)
+        self.listen(5)
+
+        # Load CA private key and certificate
+        self.private_key = crypto.load_privatekey(crypto.FILETYPE_PEM, open(private_key).read())
+        self.certificate = crypto.load_certificate(crypto.FILETYPE_PEM, open(certificate).read())
+        self.lifetime = lifetime
+        self.basic_constraints = basic_constraints
+        self.key_usage = key_usage
+        self.extended_key_usage = extended_key_usage
+
+
+        # Perhaps perform chroot as well, currently results in
+        # (<class 'OpenSSL.crypto.Error'>:[('random number generator', 'SSLEAY_RAND_BYTES', 'PRNG not seeded')
+        # probably needs partially populated /dev in chroot
+
+        # Dropping privileges
+        _, _, uid, gid, gecos, root, shell = pwd.getpwnam("nobody")
+        os.chroot("/run/certidude/signer/jail")
+        os.setgid(gid)
+        os.setuid(uid)
+
+    def handle_accept(self):
+        pair = self.accept()
+        if pair is not None:
+            sock, addr = pair
+            handler = SignHandler(sock, self)
+

certidude/templates/client-to-site.ovpn

@@ -0,0 +1,12 @@
+client
+remote {{remote}}
+proto {{proto}}
+dev tap0
+nobind
+key {{key_path}}
+cert {{certificate_path}}
+ca {{authority_path}}
+comp-lzo
+user nobody
+group nogroup
+

certidude/templates/iconmonstr-certificate-15-icon.svg

@@ -4,7 +4,7 @@
 
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 width="48px" height="48px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve">
+	 width="32px" height="32px" viewBox="0 0 512 512" style="enable-background:new 0 0 512 512;" xml:space="preserve">
 <path id="certificate-15" d="M374.021,384.08c-4.527,29.103-16.648,55.725-36.043,77.92c-1.125-7.912-4.359-15.591-7.428-21.727
 	c-7.023,3.705-15.439,5.666-22.799,5.666c-1.559,0-3.102-0.084-4.543-0.268c20.586-21.459,30.746-43.688,33.729-73.294
 	c4.828,1.341,10.697,2.046,18.072,2.046C362.119,379.285,364.918,382.319,374.021,384.08z M457.709,445.672

certidude/templates/iconmonstr-email-2-icon.svg

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+
+<!-- The icon can be used freely in both personal and commercial projects with no attribution required, but always appreciated. 
+You may NOT sub-license, resell, rent, redistribute or otherwise transfer the icon without express written permission from iconmonstr.com -->
+
+
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+
+	 width="32px" height="32px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
+
+<path id="email-2-icon" d="M49.744,103.407v305.186H50.1h411.156h1V103.407H49.744z M415.533,138.407L255.947,260.465
+
+	L96.473,138.407H415.533z M84.744,173.506l85.504,65.441L84.744,324.45V173.506z M85.1,373.593l113.186-113.186l57.654,44.127
+
+	l57.375-43.882l112.941,112.94H85.1z M427.256,325.097l-85.896-85.896l85.896-65.695V325.097z"/>
+
+</svg>
+

certidude/templates/iconmonstr-flag-3-icon.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- License Agreement at http://iconmonstr.com/license/ -->
+
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="32px" height="32px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
+<path id="flag-3-icon" d="M120.204,462H74.085V50h46.119V462z M437.915,80.746c0,0-29.079,25.642-67.324,25.642
+	c-60.271,0-61.627-51.923-131.596-51.923c-37.832,0-73.106,17.577-88.045,30.381c0,12.64,0,216.762,0,216.762
+	c21.204-14.696,53.426-30.144,88.286-30.144c66.08,0,75.343,49.388,134.242,49.388c38.042,0,64.437-24.369,64.437-24.369V80.746z"/>
+</svg>

certidude/templates/iconmonstr-key-2-icon.svg

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- The icon can be used freely in both personal and commercial projects with no attribution required, but always appreciated. 
+You may NOT sub-license, resell, rent, redistribute or otherwise transfer the icon without express written permission from iconmonstr.com -->
+
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="32px" height="32px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
+<path id="key-2-icon" stroke="#000000" stroke-miterlimit="10" d="M286.529,325.486l-45.314,45.314h-43.873l0.002,43.872
+	l-45.746-0.001v41.345l-100.004-0.001l150.078-150.076c-4.578-4.686-10.061-11.391-13.691-17.423L50,426.498v-40.939
+	l145.736-145.736C212.174,278.996,244.713,310.705,286.529,325.486z M425.646,92.339c48.473,48.473,48.471,127.064-0.002,175.535
+	c-48.477,48.476-127.061,48.476-175.537,0.001c-48.473-48.472-48.475-127.062,0-175.537
+	C298.58,43.865,377.172,43.865,425.646,92.339z M400.73,117.165c-12.023-12.021-31.516-12.021-43.537,0
+	c-12.021,12.022-12.021,31.517,0,43.538s31.514,12.021,43.537-0.001C412.754,148.68,412.75,129.188,400.73,117.165z"/>
+</svg>

certidude/templates/iconmonstr-time-13-icon.svg

@@ -5,7 +5,7 @@ You may NOT sub-license, resell, rent, redistribute or otherwise transfer the ic
 
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
 <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 width="48px" height="48px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
+	 width="32px" height="32px" viewBox="0 0 512 512" enable-background="new 0 0 512 512" xml:space="preserve">
 <path id="time-13-icon" d="M361.629,172.206c15.555-19.627,24.121-44.229,24.121-69.273V50h-259.5v52.933
 	c0,25.044,8.566,49.646,24.121,69.273l50.056,63.166c9.206,11.617,9.271,27.895,0.159,39.584l-50.768,65.13
 	c-15.198,19.497-23.568,43.85-23.568,68.571V462h259.5v-53.343c0-24.722-8.37-49.073-23.567-68.571l-50.769-65.13

certidude/templates/index.html

@@ -9,17 +9,22 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     <title>Certidude server</title>
     <style type="text/css">
+        svg {
+            position: relative;
+            top: 0.5em;
+        }
+
         img {
             max-width: 100%;
             max-height: 100%;
         }
-        
+
         ul {
             list-style: none;
-            margin: 0;
+            margin: 1em 0;
             padding: 0;
         }
-        
+
         button, .button {
             color: #000;
             float: right;
@@ -31,50 +36,53 @@
             box-sizing: border-box;
         }
         
-        .monospace {
+        button:disabled, .button:disabled {
-            font-family: 'Ubuntu Mono', monospace;
+            color: #888;
-            font-size: 80%;
         }
-        
+
+        .monospace {
+            font-family: 'Ubuntu Mono', courier, monospace;
+        }
+
         footer {
             display: block;
             color: #fff;
             text-align: center;
         }
-        
+
         a {
             text-decoration: none;
             color: #44c;
         }
-        
+
         footer a {
             color: #aaf;
         }
-        
+
         html,body {
             margin: 0;
             padding: 0 0 1em 0;
         }
-        
+
         body {
             background: #222;
             background-image: url('http://fc00.deviantart.net/fs71/i/2013/078/9/6/free_hexa_pattern_cc0_by_black_light_studio-d4ig12f.png');
-            background-position: center; 
+            background-position: center;
         }
-        
+
         .comment {
             color: #aaf;
         }
-        
+
         table th, table td {
             border: 1px solid #ccc;
             padding: 2px;
         }
-        
+
         h1, h2, th {
             font-family: 'Gentium';
         }
-        
+
         h1 {
             text-align: center;
             font-size: 22pt;
@@ -83,17 +91,17 @@
         h2 {
             font-size: 18pt;
         }
-        
+
         h2 svg {
             position: relative;
             top: 16px;
         }
-        
+
         p, td, footer, li, button {
             font-family: 'PT Sans Narrow';
             font-size: 14pt;
         }
-        
+
         pre {
             overflow: auto;
             border: 1px solid #000;
@@ -104,10 +112,10 @@
             border-radius: 6px;
             margin: 0 0;
         }
-        
-        #container {
 
-            margin: 1em;
+        #container {
+            max-width: 60em;
+            margin: 1em auto;
             background: #fff;
             padding: 1em;
             border-style: solid;
@@ -115,7 +123,7 @@
             border-color: #aaa;
             border-radius: 10px;
         }
-        
+
         li {
             margin: 4px 0;
             padding: 4px 0;
@@ -123,14 +131,7 @@
             border-top: 1px dashed #ccc;
         }
 
-        li .details {
+
-            opacity: 0.2; 
-        }
-        
-        li:hover .details {
-            opacity: 1.0;
-        }
-        
     </style>
 </head>
 <body>
@@ -140,18 +141,37 @@
 
 {% set s = authority.certificate.subject %}
 
-<p>To submit new certificate signing request:</p>
+<!--
+<p>To submit new certificate signing request first set common name, eg:</p>
 <pre>
 export CN=$(hostname)
-openssl genrsa -out $CN.key 4096
-openssl req -new -sha256 -key $CN.key -out $CN.csr -subj "{% if s.C %}/C={{ s.C}}{% endif %}{% if s.ST %}/ST={{ s.ST}}{% endif %}{% if s.L %}/L={{s.L}}{% endif %}{% if s.O %}/O={{ s.O}}{% endif %}{% if s.OU %}/OU={{ s.OU}}{% endif %}/CN=$CN"
-curl -H "Content-Type: application/pkcs10" -X POST -d "$(cat $CN.csr)" {{ request.url }}/request/
 </pre>
 
-<p>After signing the request</p>
+<p>Generate key and submit using standard shell tools:</p>
 
 <pre>
-curl -f {{ request.url }}/signed/$CN > $CN.crt
+curl {{request.url}}/certificate/ > ca.crt
+openssl genrsa -out $CN.key 4096
+openssl req -new -sha256 -key $CN.key -out $CN.csr -subj "{% if s.C %}/C={{s.C}}{% endif %}{% if s.ST %}/ST={{s.ST}}{% endif %}{% if s.L %}/L={{s.L}}{% endif %}{% if s.O %}/O={{s.O}}{% endif %}{% if s.OU %}/OU={{s.OU}}{% endif %}/CN=$CN"
+wget --header "Content-Type: application/pkcs10" --post-data="$(cat $CN.csr)" http://localhost:9090/api/buujaa/request/?autosign=1\&wait=30 -O $CN.crt
+openssl verify -CAfile ca.crt $CN.crt
+</pre>
+-->
+
+<p>Assuming you have Certidude installed</p>
+
+<pre>
+certidude setup client {{request.url}}
+</pre>
+
+<p>To set up OpenVPN server</p>
+<pre>
+certidude setup openvpn server {{request.url}}
+</pre>
+
+<p>Or to set up OpenVPN client</p>
+<pre>
+certidude setup openvpn client {{request.url}}
 </pre>
 
 <h1>Pending requests</h1>
@@ -159,46 +179,123 @@ curl -f {{ request.url }}/signed/$CN > $CN.crt
 <ul>
     {% for j in authority.get_requests() %}
         <li>
-            {% include 'iconmonstr-time-13-icon.svg' %}
+            <a class="button" href="/api/{{authority.slug}}/request/{{j.common_name}}/">Fetch</a>
-            <span class="monospace">{{ j.get_dn() }}</span>
+            {% if j.signable %}
-            <span class="monospace details" title="SHA-1 of public key">{{ j.get_pubkey_fingerprint().upper() }}</span>
+            <button onClick="javascript:$.ajax({url:'/api/{{authority.slug}}/request/{{j.common_name}}/',type:'patch'});">Sign</button>
+            {% else %}
+            <button title="Please use certidude command-line utility to sign unusual requests" disabled>Sign</button>
+            {% endif %}
+            <button onClick="javascript:$.ajax({url:'/api/{{authority.slug}}/request/{{j.common_name}}/',type:'delete'});">Delete</button>
 
-            <a class="button" href="/api/{{authority.slug}}/request/{{j.subject.CN}}/">Fetch</a>
+
-            <button onClick="javascript:$.ajax({url:'/api/{{authority.slug}}/request/{{j.subject.CN}}/',type:'patch'});">Sign</button>
+            <div class="monospace">
-            <button>Delete</button>
+            {% include 'iconmonstr-certificate-15-icon.svg' %}
-            <br/>
+            {{j.distinguished_name}}
-            <span>{{ j.key_length() }}-bit {{ j.key_type() }}</span>
+            </div>
+
+            {% if j.email_address %}
+            <div class="email">{% include 'iconmonstr-email-2-icon.svg' %} {{ j.email_address }}</div>
+            {% endif %}
+
+            <div class="monospace">
+            {% include 'iconmonstr-key-2-icon.svg' %}
+            <span title="SHA-1 of public key">
+            {{ j.fingerprint() }}
+            </span>
+            {{ j.key_length }}-bit
+            {{ j.key_type }}
+            </div>
+
+            {% set key_usage = j.key_usage %}
+            {% if key_usage %}
+            <div>
+            {% include 'iconmonstr-flag-3-icon.svg' %}
+            {{j.key_usage}}
+            </div>
+            {% endif %}
 
         </li>
+    {% else %}
+        <li>Great job! No certificate signing requests to sign.</li>
 	{% endfor %}
 </ul>
 
 <h1>Signed certificates</h1>
 
+
+
+<p>You can fetch a certificate by <i>common name</i> signing the request</p>
+
+<pre>
+curl -f {{request.url}}/signed/$CN > $CN.crt
+</pre>
+
 <ul>
     {% for j in authority.get_signed() | sort | reverse %}
         <li>
-        
-        {% include 'iconmonstr-certificate-15-icon.svg' %}
-            {{ j.serial}} <span class="monospace">{{ j.get_dn() }}</span>
-            <span class="monospace details" title="SHA-1 of public key">{{ j.get_pubkey_fingerprint() }}</span>
-
-            {{ j.key_length() }}-bit {{ j.key_type() }}
             <a class="button" href="/api/{{authority.slug}}/signed/{{j.subject.CN}}/">Fetch</a>
             <button onClick="javascript:$.ajax({url:'/api/{{authority.slug}}/signed/{{j.subject.CN}}/',type:'delete'});">Revoke</button>
-            
+
-            {% for key, value in j.get_extensions() %}
+            <div class="monospace">
-            {{key}}={{value}},
+            {% include 'iconmonstr-certificate-15-icon.svg' %}
-            {% endfor %}
+            {{j.distinguished_name}}
+            </div>
+
+            {% if j.email_address %}
+            <div class="email">{% include 'iconmonstr-email-2-icon.svg' %} {{ j.email_address }}</div>
+            {% endif %}
+
+            <div class="monospace">
+            {% include 'iconmonstr-key-2-icon.svg' %}
+            <span title="SHA-1 of public key">
+            {{ j.fingerprint() }}
+            </span>
+            {{ j.key_length }}-bit
+            {{ j.key_type }}
+            </div>
+
+            <div>
+            {% include 'iconmonstr-flag-3-icon.svg' %}
+            {{j.key_usage}}
+            </div>
+
+
         </li>
 	{% endfor %}
 </ul>
 
 <h1>Revoked certificates</h1>
 
+<p>To fetch certificate revocation list:</p>
+<pre>
+curl {{request.url}}/revoked/ | openssl crl -text -noout
+</pre>
+<!--
+<p>To perform online certificate status request</p>
+
+<pre>
+curl {{request.url}}/certificate/ > ca.pem
+openssl ocsp -issuer ca.pem -CAfile ca.pem -url {{request.url}}/ocsp/ -serial 0x
+</pre>
+-->
 <ul>
-    {% for serial, reason, timestamp in authority.get_revoked() %}
+    {% for j in authority.get_revoked() %}
-        <li>{{ serial}} {{ reason }} {{ timestamp}} </li>
+        <li>
+            {{j.changed}}
+            {{j.serial_number}} <span class="monospace">{{j.distinguished_name}}</span>
+        </li>
+    {% else %}
+        <li>Great job! No certificate signing requests to sign.</li>
 	{% endfor %}
 </ul>
 
+</div>
+</body>
+
+<footer>
+    <a href="http://github.com/laurivosandi/certidude">Certidude</a> by
+    <a href="http://github.com/laurivosandi/">Lauri Võsandi</a>
+</footer>
+
+</html>
+

certidude/templates/openssl.cnf

@@ -0,0 +1,32 @@
+[CA_{{slug}}]
+default_days = 1825
+dir = {{directory}}
+private_key = $dir/ca_key.pem
+certificate = $dir/ca_crt.pem
+new_certs_dir = $dir/requests/
+revoked_certs_dir = $dir/revoked/
+certs = $dir/signed/
+crl = $dir/ca_crl.pem
+serial = $dir/serial
+{% if crl_distribution_points %}
+crlDistributionPoints = {{crl_distribution_points}}{% endif %}
+{% if email_address %}
+emailAddress = {{email_address}}{% endif %}
+x509_extensions = {{slug}}_cert
+policy = poliy_{{slug}}
+autosign_whitelist = 127.
+inbox = {{inbox}}
+outbox = {{outbox}}
+
+[policy_{{slug}}]
+countryName = match
+stateOrProvinceName = match
+organizationName = match
+organizationalUnitName = optional
+commonName = supplied
+emailAddress = optional
+
+[{{slug}}_cert]
+basicConstraints = CA:FALSE
+keyUsage = nonRepudiation,digitalSignature,keyEncipherment
+extendedKeyUsage = clientAuth

certidude/templates/site-to-client.ovpn

@@ -0,0 +1,16 @@
+mode server
+tls-server
+proto {{proto}}
+port {{port}}
+dev tap0
+local {{local}}
+key {{key_path}}
+cert {{certificate_path}}
+ca {{authority_path}}
+comp-lzo
+user nobody
+group nogroup
+ifconfig-pool-persist /tmp/openvpn-leases.txt
+ifconfig {{subnet_first}} {{subnet.netmask}}
+server-bridge {{subnet_first}} {{subnet.netmask}} {{subnet_second}} {{subnet_last}}
+

certidude/wrappers.py

@@ -1,62 +1,111 @@
 import os
-from OpenSSL import crypto
-from datetime import datetime
 import hashlib
-from Crypto.Util import asn1
+import logging
 import re
 import itertools
+import click
+import socket
+import io
+import urllib.request
 from configparser import RawConfigParser
+from Crypto.Util import asn1
+from OpenSSL import crypto
+from datetime import datetime
+from jinja2 import Environment, PackageLoader, Template
+from certidude.mailer import Mailer
+from certidude.signer import raw_sign, EXTENSION_WHITELIST
 
+env = Environment(loader=PackageLoader("certidude", "email_templates"))
+
+# https://securityblog.redhat.com/2014/06/18/openssl-privilege-separation-analysis/
 # https://jamielinux.com/docs/openssl-certificate-authority/
+# http://pycopia.googlecode.com/svn/trunk/net/pycopia/ssl/certs.py
+
+def notify(func):
+    # TODO: Implement e-mail and nginx notifications using hooks
+    def wrapped(instance, csr, *args, **kwargs):
+        cert = func(instance, csr, *args, **kwargs)
+        assert isinstance(cert, Certificate), "notify wrapped function %s returned %s" % (func, type(cert))
+        url_template = os.getenv("CERTIDUDE_EVENT_PUBLISH")
+        if url_template:
+            url = url_template % csr.fingerprint()
+            notification = urllib.request.Request(url, cert.dump().encode("ascii"))
+            notification.add_header("User-Agent", "Certidude API")
+            notification.add_header("Content-Type", "application/x-x509-user-cert")
+            click.echo("Submitting notification to %s, waiting for response..." % url)
+            response = urllib.request.urlopen(notification)
+            response.read()
+        return cert
+
+# TODO: Implement e-mailing
+
+#        self.mailer.send(
+#            self.certificate.email_address,
+#            (self.certificate.email_address, cert.email_address),
+#            "Certificate %s signed" % cert.distinguished_name,
+#            "certificate-signed",
+#            old_cert=old_cert,
+#            cert=cert,
+#            ca=self.certificate)
+
+    return wrapped
+
 
 def subject2dn(subject):
     bits = []
-    for j in "C", "S", "L", "O", "OU", "CN":
+    for j in "CN", "GN", "SN", "C", "S", "L", "O", "OU":
         if getattr(subject, j, None):
             bits.append("/%s=%s" % (j, getattr(subject, j)))
     return "".join(bits)
 
-class SerialCounter(object):
-    def __init__(self, filename):
-        self.path = filename
-        with open(filename, "r") as fh:
-            self.value = int(fh.read(), 16)
-
-    def increment(self):
-        self.value += 1
-        with open(self.path, "w") as fh:
-            fh.write("%04x" % self.value)
-        return self.value
-
 class CertificateAuthorityConfig(object):
     """
     Attempt to parse CA-s from openssl.cnf
     """
-    
+
     def __init__(self, *args):
         self._config = RawConfigParser()
         for arg in args:
             self._config.readfp(itertools.chain(["[global]"], open(os.path.expanduser(arg))))
 
+    def get(self, section, key, default=""):
+        if self._config.has_option(section, key):
+            return self._config.get(section, key)
+        else:
+            return default
+
     def instantiate_authority(self, slug):
         section = "CA_" + slug
-                
+
-        dirs = dict([(key, self._config.get(section, key)
+        dirs = dict([(key, self.get(section, key))
-            if self._config.has_option(section, key) else "")
+            for key in ("dir", "certificate", "crl", "certs", "new_certs_dir", "private_key", "revoked_certs_dir", "autosign_whitelist")])
-            for key in ("dir", "certificate", "crl", "certs", "new_certs_dir", "serial", "private_key", "revoked_certs_dir")])
+
-        
         # Variable expansion, eg $dir
         for key, value in dirs.items():
             if "$" in value:
                 dirs[key] = re.sub(r'\$([a-z]+)', lambda m:dirs[m.groups()[0]], value)
-        
+
         dirs.pop("dir")
-        return CertificateAuthority(slug, **dirs)
+        dirs["email_address"] = self.get(section, "emailAddress")
+        dirs["inbox"] = self.get(section, "inbox")
+        dirs["outbox"] = self.get(section, "outbox")
+        dirs["lifetime"] = int(self.get(section, "default_days", "1825"))
+
+        extensions_section = self.get(section, "x509_extensions")
+        if extensions_section:
+            dirs["basic_constraints"] = self.get(extensions_section, "basicConstraints")
+            dirs["key_usage"] = self.get(extensions_section, "keyUsage")
+            dirs["extended_key_usage"] = self.get(extensions_section, "extendedKeyUsage")
+        authority = CertificateAuthority(slug, **dirs)
+        return authority
 
     def all_authorities(self):
         for section in self._config:
             if section.startswith("CA_"):
-                yield self.instantiate_authority(section[3:])
+                try:
+                    yield self.instantiate_authority(section[3:])
+                except FileNotFoundError:
+                    pass
 
     def pop_certificate_authority(self):
         def wrapper(func):
@@ -68,215 +117,461 @@ class CertificateAuthorityConfig(object):
         return wrapper
 
 class CertificateBase:
-    def get_issuer_dn(self):
+    @property
+    def given_name(self):
+        return self.subject.GN
+
+    @given_name.setter
+    def given_name(self, value):
+        return setattr(self.subject, "GN", value)
+
+    @property
+    def surname(self):
+        return self.subject.SN
+
+    @surname.setter
+    def surname(self, value):
+        return setattr(self.subject, "SN", value)
+
+    @property
+    def common_name(self):
+        return self.subject.CN
+
+    @common_name.setter
+    def common_name(self, value):
+        return setattr(self._obj.get_subject(), "CN", value)
+
+    @property
+    def country_code(self):
+        return getattr(self._obj.get_subject(), "C", None)
+
+    @property
+    def state_or_county(self):
+        return getattr(self._obj.get_subject(), "S", None)
+
+    @property
+    def city(self):
+        return getattr(self._obj.get_subject(), "L", None)
+
+    @property
+    def organization(self):
+        return getattr(self._obj.get_subject(), "O", None)
+
+    @property
+    def organizational_unit(self):
+        return getattr(self._obj.get_subject(), "OU", None)
+
+    @country_code.setter
+    def country_code(self, value):
+        return setattr(self._obj.get_subject(), "C", value)
+
+    @state_or_county.setter
+    def state_or_county(self, value):
+        return setattr(self._obj.get_subject(), "S", value)
+
+    @city.setter
+    def city(self, value):
+        return setattr(self._obj.get_subject(), "L", value)
+
+    @organization.setter
+    def organization(self, value):
+        return setattr(self._obj.get_subject(), "O", value)
+
+    @organizational_unit.setter
+    def organizational_unit(self, value):
+        return setattr(self._obj.get_subject(), "OU", value)
+
+    @property
+    def key_usage(self):
+        def iterate():
+            for key, value, data in self.extensions:
+                if key == "keyUsage" or key == "extendedKeyUsage":
+                    yield value
+        return ", ".join(iterate())
+
+    @property
+    def subject(self):
+        return self._obj.get_subject()
+
+    @property
+    def issuer(self):
+        return self._obj.get_issuer()
+
+    @property
+    def issuer_dn(self):
         return subject2dn(self.issuer)
 
-    def get_dn(self):
+    @property
+    def distinguished_name(self):
         return subject2dn(self.subject)
-        
+
+    @property
     def key_length(self):
         return self._obj.get_pubkey().bits()
-        
+
+    @property
     def key_type(self):
         if self._obj.get_pubkey().type() == 6:
             return "RSA"
         else:
             raise NotImplementedError()
-            
-    def get_pubkey(self):            
-        pub_asn1=crypto.dump_privatekey(crypto.FILETYPE_ASN1, self._obj.get_pubkey())
-        pub_der=asn1.DerSequence()
-        pub_der.decode(pub_asn1)
-        return pub_der[1]
-    
-    def get_pubkey_hex(self):
-        h = "%x" % self.get_pubkey()
-        assert len(h) * 4 == self.key_length(), "%s is not %s" % (len(h)*4, self.key_length())
-        return ":".join(re.findall("..", "%x" % self.get_pubkey()))
 
-    def get_pubkey_fingerprint(self):
+    @property
+    def extensions(self):
+        for e in self._obj.get_extensions():
+            yield e.get_short_name().decode("ascii"), str(e), e.get_data()
+
+    def set_extensions(self, extensions):
+        # X509Req().add_extensions() first invocation takes only effect?!
+        assert self._obj.get_extensions() == [], "Extensions already set!"
+
+        self._obj.add_extensions([
+            crypto.X509Extension(
+                key.encode("ascii"),
+                critical,
+                value.encode("ascii")) for (key,value,critical) in extensions])
+
+    @property
+    def email_address(self):
+        for bit in self.subject_alt_name.split(", "):
+            if bit.startswith("email:"):
+                return bit[6:]
+        return ""
+
+    @property
+    def subject_alt_name(self):
+        for key, value, data in self.extensions:
+            if key == "subjectAltName":
+                return value
+        return ""
+
+    @subject_alt_name.setter
+    def subject_alt_name(self, value):
+        self.set_extension("subjectAltName", value, False)
+
+    @property
+    def pubkey(self):
+        pubkey_asn1=crypto.dump_privatekey(crypto.FILETYPE_ASN1, self._obj.get_pubkey())
+        pubkey_der=asn1.DerSequence()
+        pubkey_der.decode(pubkey_asn1)
+        zero, modulo, exponent = pubkey_der
+        return modulo, exponent
+
+    @property
+    def pubkey_hex(self):
+        modulo, exponent = self.pubkey
+        h = "%x" % modulo
+        assert len(h) * 4 == self.key_length, "%s is not %s" % (len(h)*4, self.key_length)
+        return re.findall("\d\d", h)
+
+    def fingerprint(self):
         import binascii
-        return ":".join(re.findall("..", hashlib.sha1(binascii.unhexlify("%x" % self.get_pubkey())).hexdigest()))
+        m, _ = self.pubkey
+        return ":".join(re.findall("..", hashlib.sha1(binascii.unhexlify("%x" % m)).hexdigest()))
 
-class Certificate(CertificateBase):
-    def __init__(self, filename, authority=None):
-        self.path = os.path.realpath(filename)
-        try:
-            self._obj = crypto.load_certificate(crypto.FILETYPE_PEM, open(filename).read())
-        except crypto.Error:
-            click.echo("Failed to parse certificate: %s" % filename)
-            raise
-        self.not_before = datetime.strptime(self._obj.get_notBefore().decode("ascii"), "%Y%m%d%H%M%SZ")
-        self.not_after = datetime.strptime(self._obj.get_notAfter().decode("ascii"), "%Y%m%d%H%M%SZ")
-        self.subject = self._obj.get_subject()
-        self.issuer = self._obj.get_issuer()
-        self.serial = self._obj.get_serial_number()
-        self.authority = authority
-        self.subject_key_identifier = None
-
-    def get_extensions(self):
-        for i in range(1, self._obj.get_extension_count()):
-            ext = self._obj.get_extension(i)
-            yield ext.get_short_name(), str(ext)
-        
-    def digest(self):
-        return self._obj.digest("md5").decode("ascii")
-        
-    def __eq__(self, other):
-        return self.serial == other.serial
-        
-    def __gt__(self, other):
-        return self.serial > other.serial
-
-    def __lt__(self, other):
-        return self.serial < other.serial
-
-    def __gte__(self, other):
-        return self.serial >= other.serial
-
-    def __lte__(self, other):
-        return self.serial <= other.serial
-
-def lock_crl(func):
-    def wrapped(ca, *args, **kwargs):
-        # TODO: Implement actual locking!
-        try:
-            crl = crypto.load_crl(crypto.FILETYPE_PEM, open(ca.revocation_list).read())
-        except crypto.Error:
-            click.echo("Failed to parse CRL in %s" % ca.revocation_list)
-            raise
-        count = len(crl.get_revoked() or ())
-        retval = func(ca, crl, *args, **kwargs)
-        if count != len(crl.get_revoked() or ()):
-            click.echo("Updating CRL")
-            partial = ca.revocation_list + ".part"
-            with open(partial, "wb") as fh:
-                fh.write(crl.export(
-                    ca.certificate._obj,
-                    crypto.load_privatekey(crypto.FILETYPE_PEM, open(ca.private_key).read()),
-                    crypto.FILETYPE_PEM))
-            os.rename(partial, ca.revocation_list)
-        return retval
-    return wrapped
 
 class Request(CertificateBase):
-    def __init__(self, request_path):
+    def __init__(self, mixed=None):
-        self.path = request_path
+        self.buf = None
-        self._obj = crypto.load_certificate_request(crypto.FILETYPE_PEM, open(self.path).read())
+        self.path = NotImplemented
-        self.subject = self._obj.get_subject()
+        self.created = NotImplemented
+
+        if isinstance(mixed, io.TextIOWrapper):
+            self.path = mixed.name
+            _, _, _, _, _, _, _, _, mtime, _ = os.stat(self.path)
+            self.created = datetime.fromtimestamp(mtime)
+            mixed = mixed.read()
+        if isinstance(mixed, bytes):
+            mixed = mixed.decode("ascii")
+        if isinstance(mixed, str):
+            try:
+                self.buf = mixed
+                mixed = crypto.load_certificate_request(crypto.FILETYPE_PEM, mixed)
+            except crypto.Error:
+                print("Failed to parse:", mixed)
+                raise
+
+        if isinstance(mixed, crypto.X509Req):
+            self._obj = mixed
+        else:
+            raise ValueError("Can't parse %s as X.509 certificate signing request!" % mixed)
+
+        assert not self.buf or self.buf == self.dump(), "%s is not %s" % (self.buf, self.dump())
+
+    @property
+    def signable(self):
+        for key, value, data in self.extensions:
+            if key not in EXTENSION_WHITELIST:
+                return False
+        return True
+
+    def dump(self):
+        return crypto.dump_certificate_request(crypto.FILETYPE_PEM, self._obj).decode("ascii")
 
-        """
-        pub_asn1=crypto.dump_privatekey(crypto.FILETYPE_ASN1, self._obj.get_pubkey())
-        pub_der=asn1.DerSequence()
-        pub_der.decode(pub_asn1)
-        n=pub_der[1]
-        # Get the modulus
-        print("public modulus:  %x" % n)
-        import binascii
-        self.sha_hash = hashlib.sha1(binascii.unhexlify("%x" % n)).hexdigest()
-        """
-    
     def __repr__(self):
         return "Request(%s)" % repr(self.path)
 
+    def create(self):
+        # Generate 4096-bit RSA key
+        key = crypto.PKey()
+        key.generate_key(crypto.TYPE_RSA, 4096)
+
+        # Create request
+        req = crypto.X509Req()
+        req.set_pubkey(key)
+        return Request(req)
+
+class Certificate(CertificateBase):
+    def __init__(self, mixed):
+        self.buf = NotImplemented
+        self.path = NotImplemented
+        self.changed = NotImplemented
+
+        if isinstance(mixed, io.TextIOWrapper):
+            self.path = mixed.name
+            _, _, _, _, _, _, _, _, _, ctime = os.stat(self.path)
+            self.changed = datetime.fromtimestamp(ctime)
+            mixed = mixed.read()
+
+        if isinstance(mixed, str):
+            try:
+                self.buf = mixed
+                mixed = crypto.load_certificate(crypto.FILETYPE_PEM, mixed)
+            except crypto.Error:
+                print("Failed to parse:", mixed)
+                raise
+
+        if isinstance(mixed, crypto.X509):
+            self._obj = mixed
+        else:
+            raise ValueError("Can't parse %s as X.509 certificate!" % mixed)
+
+        assert not self.buf or self.buf == self.dump(), "%s is not %s" % (self.buf, self.dump())
+
+    @property
+    def extensions(self):
+        # WTF?!
+        for j in range(1, self._obj.get_extension_count()):
+            e = self._obj.get_extension(j)
+            yield e.get_short_name().decode("ascii"), str(e), e.get_data()
+
+    @property
+    def serial_number(self):
+        return "%040x" % self._obj.get_serial_number()
+
+    @property
+    def signed(self):
+        return datetime.strptime(self._obj.get_notBefore().decode("ascii"), "%Y%m%d%H%M%SZ")
+
+    @property
+    def expires(self):
+        return datetime.strptime(self._obj.get_notAfter().decode("ascii"), "%Y%m%d%H%M%SZ")
+
+    def dump(self):
+        return crypto.dump_certificate(crypto.FILETYPE_PEM, self._obj).decode("ascii")
+
+    def digest(self):
+        return self._obj.digest("md5").decode("ascii")
+
+    def __eq__(self, other):
+        return self.serial_number == other.serial_number
+
+    def __gt__(self, other):
+        return self.signed > other.signed
+
+    def __lt__(self, other):
+        return self.signed < other.signed
+
+    def __gte__(self, other):
+        return self.signed >= other.signed
+
+    def __lte__(self, other):
+        return self.signed <= other.signed
+
 class CertificateAuthority(object):
-    def __init__(self, slug, certificate, crl, certs, new_certs_dir, revoked_certs_dir=None, serial=None, private_key=None):
+
+    def __init__(self, slug, certificate, crl, certs, new_certs_dir, revoked_certs_dir=None, private_key=None, autosign=False, autosign_whitelist=None, email_address=None, inbox=None, outbox=None, basic_constraints="CA:FALSE", key_usage="digitalSignature,keyEncipherment", extended_key_usage="clientAuth", lifetime=5*365):
         self.slug = slug
         self.revocation_list = crl
         self.signed_dir = certs
         self.request_dir = new_certs_dir
         self.revoked_dir = revoked_certs_dir
         self.private_key = private_key
-        
+        self.autosign_whitelist = set([j for j in autosign_whitelist.split(" ") if j])
-        if isinstance(certificate, str):
+        self.certificate = Certificate(open(certificate))
-            self.certificate = Certificate(certificate, self)
+        self.mailer = Mailer(outbox) if outbox else None
-        else:
+        self.lifetime = lifetime
-            self.certificate = certificate
+        self.basic_constraints = basic_constraints
+        self.key_usage = key_usage
+        self.extended_key_usage = extended_key_usage
 
-        if isinstance(serial, str):
+    def autosign_allowed(self, addr):
-            self.serial_counter=SerialCounter(serial)
+        for j in self.autosign_whitelist:
-        else:
+            if j.endswith(".") and addr.startswith(j):
-            self.serial_counter=serial
+                return True
+            elif j == addr:
+                return True
+        return False
+
+    def _signer_exec(self, cmd, *bits):
+        sock = self.connect_signer()
+        sock.send(cmd.encode("ascii"))
+        sock.send(b"\n")
+        for bit in bits:
+            sock.send(bit.encode("ascii"))
+        sock.sendall(b"\n\n")
+        buf = sock.recv(8192)
+        if not buf:
+            raise
+        return buf
 
-        
     def __repr__(self):
         return "CertificateAuthority(slug=%s)" % repr(self.slug)
-        
+
-    def get_request(self, cn):
-        return Request(os.path.join(self.request_dir, cn + ".pem"))
-        
     def get_certificate(self, cn):
-        return Certificate(os.path.join(self.signed_dir, cn + ".pem"))
+        return open(os.path.join(self.signed_dir, cn + ".pem")).read()
-    
+
-    @lock_crl
+    def connect_signer(self):
-    def revoke(self, crl, cn):
+        sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-        certificate = self.get_certificate(cn)
+        sock.connect("/run/certidude/signer/%s.sock" % self.slug)
-        revocation = crypto.Revoked()
+        return sock
-        revocation.set_rev_date(datetime.now().strftime("%Y%m%d%H%M%SZ").encode("ascii"))
+
-        revocation.set_reason(b"keyCompromise")
+    def revoke(self, cn):
-        revocation.set_serial(("%x" % certificate.serial).encode("ascii"))
+        cert = Certificate(open(os.path.join(self.signed_dir, cn + ".pem")))
-        if self.revoked_dir:
+        revoked_filename = os.path.join(self.revoked_dir, "%s.pem" % cert.serial_number)
-            os.rename(certificate.path, self.revoked_dir)
+        os.rename(cert.path, revoked_filename)
-        else:
+
-            os.unlink(certificate.path)
+    def get_revoked(self):
-        crl.add_revoked(revocation)
+        for root, dirs, files in os.walk(self.revoked_dir):
-    
+            for filename in files:
-    @lock_crl
+                if filename.endswith(".pem"):
-    def get_revoked(self, crl):
+                    yield Certificate(open(os.path.join(root, filename)))
-        for revocation in crl.get_revoked() or ():
+            break
-            yield int(revocation.get_serial(), 16), \
+
-                revocation.get_reason().decode("ascii"), \
-                datetime.strptime(revocation.get_rev_date().decode("ascii"), "%Y%m%d%H%M%SZ")
-                            
     def get_signed(self):
         for root, dirs, files in os.walk(self.signed_dir):
             for filename in files:
-                yield Certificate(os.path.join(root, filename))
+                if filename.endswith(".pem"):
+                    yield Certificate(open(os.path.join(root, filename)))
             break
 
     def get_requests(self):
         for root, dirs, files in os.walk(self.request_dir):
             for filename in files:
-                yield Request(os.path.join(root, filename))
+                if filename.endswith(".pem"):
-    
+                    yield Request(open(os.path.join(root, filename)))
-    def sign(self, request, lifetime=5*365*24*60*60):
+            break
-        cert = crypto.X509()
+
-        cert.add_extensions([
+    def get_request(self, cn):
-            crypto.X509Extension(
+        return Request(open(os.path.join(self.request_dir, cn + ".pem")))
-                b"basicConstraints",
+
-                True,
+    def store_request(self, buf, overwrite=False):
-                b"CA:FALSE, pathlen:0"),
+        request = crypto.load_certificate_request(crypto.FILETYPE_PEM, buf)
-            crypto.X509Extension(
+        common_name = request.get_subject().CN
-                b"keyUsage",
+        request_path = os.path.join(self.request_dir, common_name + ".pem")
-                True,
+
-                b"digitalSignature, keyEncipherment"),
+        # If there is cert, check if it's the same
-            crypto.X509Extension(
+        if os.path.exists(request_path):
-                b"subjectKeyIdentifier",
+            if open(request_path, "rb").read() != buf:
-                False,
+                print("Request already exists, not creating new request")
-                b"hash",
+                raise FileExistsError("Request already exists")
-                subject = self.certificate._obj),
+        else:
-            crypto.X509Extension(
+            with open(request_path + ".part", "wb") as fh:
-                b"authorityKeyIdentifier",
+                fh.write(buf)
-                False,
+            os.rename(request_path + ".part", request_path)
-                b"keyid:always",
+
-                issuer = self.certificate._obj)])
+        return Request(open(request_path))
-        cert.set_pubkey(request._obj.get_pubkey())
+
-        cert.set_subject(request._obj.get_subject())
+    def request_exists(self, cn):
-        cert.gmtime_adj_notBefore(0)
+        return os.path.exists(os.path.join(self.request_dir, cn + ".pem"))
-        cert.gmtime_adj_notAfter(lifetime)
+
-        cert.set_serial_number(self.serial_counter.increment())
+    def delete_request(self, cn):
-        
+        os.unlink(os.path.join(self.request_dir, cn + ".pem"))
-        pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, open(self.private_key).read())
+
-        cert.sign(pkey, 'sha1')
+    def create_bundle(self, common_name, organizational_unit=None, email_address=None, overwrite=True):
-       
+        req = Request.create()
-        path = os.path.join(self.signed_dir, request.subject.CN + ".pem")
+        req.country = self.certificate.country
-        assert not os.path.exists(path), "File %s already exists!" % path
+        req.state_or_county = self.certificate.state_or_county
+        req.city = self.certificate.city
+        req.organization = self.certificate.organization
+        req.organizational_unit = organizational_unit or self.certificate.organizational_unit
+        req.common_name = common_name
+        req.email_address = email_address
+        cert_buf = self.sign(req, overwrite)
+        return crypto.dump_privatekey(crypto.FILETYPE_PEM, key).decode("ascii"), \
+            req_buf, cert_buf
+
+    @notify
+    def sign(self, req, overwrite=False, delete=True):
+        """
+        Sign certificate signing request via signer process
+        """
+
+        cert_path = os.path.join(self.signed_dir, req.common_name + ".pem")
+
+        # Move existing certificate if necessary
+        if os.path.exists(cert_path):
+            old_cert = Certificate(open(cert_path))
+            if overwrite:
+                self.revoke(req.common_name)
+            elif req.pubkey == old_cert.pubkey:
+                return old_cert
+            else:
+                raise FileExistsError("Will not overwrite existing certificate")
+
+        # Sign via signer process
+        cert_buf = self._signer_exec("sign-request", req.dump())
+        with open(cert_path + ".part", "wb") as fh:
+            fh.write(cert_buf)
+        os.rename(cert_path + ".part", cert_path)
+
+        return Certificate(open(cert_path))
+
+    @notify
+    def sign2(self, request, overwrite=False, delete=True, lifetime=None):
+        """
+        Sign directly using private key, this is usually done by root.
+        Basic constraints and certificate lifetime are copied from openssl.cnf,
+        lifetime may be overridden on the command line,
+        other extensions are copied as is.
+        """
+        cert = raw_sign(
+            crypto.load_privatekey(crypto.FILETYPE_PEM, open(self.private_key).read()),
+            self.certificate._obj,
+            request._obj,
+            self.basic_constraints,
+            lifetime=lifetime or self.lifetime)
+
+        path = os.path.join(self.signed_dir, request.common_name + ".pem")
+        if os.path.exists(path):
+            if overwrite:
+                self.revoke(request.common_name)
+            else:
+                raise FileExistsError("File %s already exists!" % path)
 
         buf = crypto.dump_certificate(crypto.FILETYPE_PEM, cert)
         with open(path + ".part", "wb") as fh:
             fh.write(buf)
         os.rename(path + ".part", path)
-        click.echo("Wrote certififcate to: %s" % path)
+        click.echo("Wrote certificate to: %s" % path)
-        os.unlink(request.path)
+        if delete:
-        click.echo("Deleted request: %s" % request.path)
+            os.unlink(request.path)
+            click.echo("Deleted request: %s" % request.path)
+
+        return Certificate(open(path))
+
+    def export_crl(self):
+        sock = self.connect_signer()
+        sock.send(b"export-crl\n")
+        for filename in os.listdir(self.revoked_dir):
+            if not filename.endswith(".pem"):
+                continue
+            serial_number = filename[:-4]
+            # TODO: Assert serial against regex
+            revoked_path = os.path.join(self.revoked_dir, filename)
+            # TODO: Skip expired certificates
+            s = os.stat(revoked_path)
+            sock.send(("%s:%d\n" % (serial_number, s.st_ctime)).encode("ascii"))
+        sock.sendall(b"\n")
+        return sock.recv(32*1024*1024)
 

setup.py

@@ -17,9 +17,14 @@ setup(
     ],
     long_description=open("README.rst").read(),
     install_requires=[
+        "setproctitle",
         "click",
         "falcon",
-        "jinja2"
+        "jinja2",
+        "netifaces",
+        "pyopenssl",
+        "pycountry",
+        "humanize"
     ],
     scripts=[
         "misc/certidude"