Adding the ability to track a certificates signing key algorithm

docs/faq.rst

@@ -14,6 +14,22 @@ I am seeing Lemur's javascript load in my browser but not the CSS.
   :doc:`production/index` for example configurations.
 
 
+Running 'lemur db upgrade' seems stuck.
+  Most likely, the upgrade is stuck because an existing query on the database is holding onto a lock that the
+  migration needs.
+
+  To resolve, login to your lemur database and run:
+
+    SELECT * FROM pg_locks l INNER JOIN pg_stat_activity s ON (l.pid = s.pid) WHERE waiting AND NOT granted;
+
+  This will give you a list of queries that are currently waiting to be executed. From there attempt to idenity the PID
+  of the query blocking the migration. Once found execute:
+
+    select pg_terminate_backend(<blocking-pid>);
+
+  See `<http://stackoverflow.com/questions/22896496/alembic-migration-stuck-with-postgresql>`_ for more.
+
+
 How do I
 --------
 

lemur/authorities/models.py

@@ -14,7 +14,7 @@ from sqlalchemy import Column, Integer, String, Text, func, ForeignKey, DateTime
 from sqlalchemy.dialects.postgresql import JSON
 
 from lemur.database import db
-from lemur.certificates.models import cert_get_cn, cert_get_not_after, cert_get_not_before
+from lemur.certificates.models import get_cn, get_not_after, get_not_before
 
 
 class Authority(db.Model):
@@ -44,9 +44,9 @@ class Authority(db.Model):
         self.owner = owner
         self.plugin_name = plugin_name
         cert = x509.load_pem_x509_certificate(str(body), default_backend())
-        self.cn = cert_get_cn(cert)
+        self.cn = get_cn(cert)
-        self.not_before = cert_get_not_before(cert)
+        self.not_before = get_not_before(cert)
-        self.not_after = cert_get_not_after(cert)
+        self.not_after = get_not_after(cert)
         self.roles = roles
         self.description = description
 

lemur/certificates/models.py

@@ -63,7 +63,11 @@ def create_name(issuer, not_before, not_after, subject, san):
     return temp.replace(" ", "-")
 
 
-def cert_get_cn(cert):
+def get_signing_algorithm(cert):
+    return cert.signature_hash_algorithm.name
+
+
+def get_cn(cert):
     """
     Attempts to get a sane common name from a given certificate.
 
@@ -75,7 +79,7 @@ def cert_get_cn(cert):
     )[0].value.strip()
 
 
-def cert_get_domains(cert):
+def get_domains(cert):
     """
     Attempts to get an domains listed in a certificate.
     If 'subjectAltName' extension is not available we simply
@@ -96,7 +100,7 @@ def cert_get_domains(cert):
     return domains
 
 
-def cert_get_serial(cert):
+def get_serial(cert):
     """
     Fetch the serial number from the certificate.
 
@@ -106,7 +110,7 @@ def cert_get_serial(cert):
     return cert.serial
 
 
-def cert_is_san(cert):
+def is_san(cert):
     """
     Determines if a given certificate is a SAN certificate.
     SAN certificates are simply certificates that cover multiple domains.
@@ -114,18 +118,18 @@ def cert_is_san(cert):
     :param cert:
     :return: Bool
     """
-    if len(cert_get_domains(cert)) > 1:
+    if len(get_domains(cert)) > 1:
         return True
 
 
-def cert_is_wildcard(cert):
+def is_wildcard(cert):
     """
     Determines if certificate is a wildcard certificate.
 
     :param cert:
     :return: Bool
     """
-    domains = cert_get_domains(cert)
+    domains = get_domains(cert)
     if len(domains) == 1 and domains[0][0:1] == "*":
         return True
 
@@ -133,7 +137,7 @@ def cert_is_wildcard(cert):
         return True
 
 
-def cert_get_bitstrength(cert):
+def get_bitstrength(cert):
     """
     Calculates a certificates public key bit length.
 
@@ -143,7 +147,7 @@ def cert_get_bitstrength(cert):
     return cert.public_key().key_size
 
 
-def cert_get_issuer(cert):
+def get_issuer(cert):
     """
     Gets a sane issuer from a given certificate.
 
@@ -160,7 +164,7 @@ def cert_get_issuer(cert):
         current_app.logger.error("Unable to get issuer! {0}".format(e))
 
 
-def cert_get_not_before(cert):
+def get_not_before(cert):
     """
     Gets the naive datetime of the certificates 'not_before' field.
     This field denotes the first date in time which the given certificate
@@ -172,7 +176,7 @@ def cert_get_not_before(cert):
     return cert.not_valid_before
 
 
-def cert_get_not_after(cert):
+def get_not_after(cert):
     """
     Gets the naive datetime of the certificates 'not_after' field.
     This field denotes the last date in time which the given certificate
@@ -224,6 +228,7 @@ class Certificate(db.Model):
     not_before = Column(DateTime)
     not_after = Column(DateTime)
     date_created = Column(DateTime, PassiveDefault(func.now()), nullable=False)
+    signing_algorithm = Column(String(128))
     user_id = Column(Integer, ForeignKey('users.id'))
     authority_id = Column(Integer, ForeignKey('authorities.id'))
     notifications = relationship("Notification", secondary=certificate_notification_associations, backref='certificate')
@@ -237,16 +242,17 @@ class Certificate(db.Model):
         self.private_key = private_key
         self.chain = chain
         cert = x509.load_pem_x509_certificate(str(self.body), default_backend())
-        self.bits = cert_get_bitstrength(cert)
+        self.signing_algorithm = get_signing_algorithm(cert)
-        self.issuer = cert_get_issuer(cert)
+        self.bits = get_bitstrength(cert)
-        self.serial = cert_get_serial(cert)
+        self.issuer = get_issuer(cert)
-        self.cn = cert_get_cn(cert)
+        self.serial = get_serial(cert)
-        self.san = cert_is_san(cert)
+        self.cn = get_cn(cert)
-        self.not_before = cert_get_not_before(cert)
+        self.san = is_san(cert)
-        self.not_after = cert_get_not_after(cert)
+        self.not_before = get_not_before(cert)
+        self.not_after = get_not_after(cert)
         self.name = create_name(self.issuer, self.not_before, self.not_after, self.cn, self.san)
 
-        for domain in cert_get_domains(cert):
+        for domain in get_domains(cert):
             self.domains.append(Domain(name=domain))
 
     @property

lemur/certificates/views.py

@@ -46,6 +46,7 @@ FIELDS = {
     'notBefore': fields.DateTime(dt_format='iso8601', attribute='not_before'),
     'notAfter': fields.DateTime(dt_format='iso8601', attribute='not_after'),
     'cn': fields.String,
+    'signingAlgorithm': fields.String(attribute='signing_algorithm'),
     'status': fields.String,
     'body': fields.String
 }
@@ -400,6 +401,7 @@ class CertificatesUpload(AuthenticatedResource):
                  "active": true,
                  "notBefore": "2015-06-05T17:09:39",
                  "notAfter": "2015-06-10T17:09:39",
+                 "signingAlgorithm": "sha2"
                  "cn": "example.com",
                  "status": "unknown"
               }
@@ -543,6 +545,7 @@ class Certificates(AuthenticatedResource):
                 "active": true,
                 "notBefore": "2015-06-05T17:09:39",
                 "notAfter": "2015-06-10T17:09:39",
+                "signingAlgorithm": "sha2",
                 "cn": "example.com",
                 "status": "unknown"
               }
@@ -677,6 +680,7 @@ class NotificationCertificatesList(AuthenticatedResource):
                       "active": true,
                       "notBefore": "2015-06-05T17:09:39",
                       "notAfter": "2015-06-10T17:09:39",
+                      "signingAlgorithm": "sha2",
                       "cn": "example.com",
                       "status": "unknown"
                     }

lemur/manage.py

@@ -716,6 +716,24 @@ def publish_verisign_units():
         requests.post('http://localhost:8078/metrics', data=json.dumps(metric))
 
 
+@manager.command
+def backfill_signing_algo():
+    """
+    Will attempt to backfill the signing_algorithm column
+
+    :return:
+    """
+    from cryptography import x509
+    from cryptography.hazmat.backends import default_backend
+    from lemur.certificates.models import get_signing_algorithm
+    for c in cert_service.get_all_certs():
+        cert = x509.load_pem_x509_certificate(str(c.body), default_backend())
+        c.signing_algorithm = get_signing_algorithm(cert)
+        c.signing_algorithm
+        database.update(c)
+        print c.signing_algorithm
+
+
 def main():
     manager.add_command("start", LemurServer())
     manager.add_command("runserver", Server(host='127.0.0.1'))

lemur/migrations/versions/4bcfa2c36623_.py

@@ -0,0 +1,26 @@
+"""Adding certificate signing algorithm
+
+Revision ID: 4bcfa2c36623
+Revises: 1ff763f5b80b
+Create Date: 2015-10-06 10:03:47.993204
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '4bcfa2c36623'
+down_revision = '1ff763f5b80b'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('certificates', sa.Column('signing_algorithm', sa.String(length=128), nullable=True))
+    ### end Alembic commands ###
+
+
+def downgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('certificates', 'signing_algorithm')
+    ### end Alembic commands ###

lemur/static/app/angular/certificates/view/view.tpl.html

@@ -89,6 +89,10 @@
                       <strong>Bits</strong>
                       <span class="pull-right">{{ certificate.bits }}</span>
                     </li>
+                    <li class="list-group-item">
+                      <strong>Signing Algorithm</strong>
+                      <span class="pull-right">{{ certificate.signingAlgorithm }}</span>
+                    </li>
                     <li class="list-group-item">
                       <strong>Serial</strong>
                       <span class="pull-right">{{ certificate.serial }}</span>

lemur/static/app/angular/dashboard/dashboard.js

@@ -79,6 +79,11 @@ angular.module('lemur')
         $scope.bits = data.items;
       });
 
+		LemurRestangular.all('certificates').customGET('stats', {metric: 'signing_algorithm'})
+			.then(function (data) {
+				$scope.algos = data.items;
+			});
+
     LemurRestangular.all('certificates').customGET('stats', {metric: 'not_after'})
       .then(function (data) {
         $scope.expiring = {labels: data.items.labels, values: [data.items.values]};

lemur/static/app/angular/dashboard/dashboard.tpl.html

@@ -23,8 +23,7 @@
         <h3 class="panel-title">Issuers</h3>
       </div>
       <div class="panel-body">
-        <canvas id="issuersPie" class="chart chart-pie" data="issuers.values" labels="issuers.labels" colours="colours"
+        <canvas id="issuersPie" class="chart chart-pie" data="issuers.values" labels="issuers.labels" colours="colours"></canvas>
-                legend="true"></canvas>
       </div>
     </div>
   </div>
@@ -34,8 +33,7 @@
         <h3 class="panel-title">Bit Strength</h3>
       </div>
       <div class="panel-body">
-        <canvas id="bitsPie" class="chart chart-pie" data="bits.values" labels="bits.labels" colours="colours"
+        <canvas id="bitsPie" class="chart chart-pie" data="bits.values" labels="bits.labels" colours="colours"></canvas>
-                legend="true"></canvas>
       </div>
     </div>
   </div>
@@ -47,7 +45,18 @@
       </div>
       <div class="panel-body">
         <canvas id="destinationPie" class="chart chart-pie" data="destinations.values" labels="destinations.labels"
-                colours="colours" legend="true"></canvas>
+                colours="colours"></canvas>
+      </div>
+    </div>
+  </div>
+  <div class="col-md-6">
+    <div class="panel panel-default">
+      <div class="panel-heading">
+        <h3 class="panel-title">Signing Algorithms</h3>
+      </div>
+      <div class="panel-body">
+        <canvas id="signingPie" class="chart chart-pie" data="algos.values" labels="algos.labels"
+                colours="colours"></canvas>
       </div>
     </div>
   </div>