Update plugin to upload CA certificate to LDAP

Define post-update plugin to upload public CA certificate to IPA LDAP server.
The plugin includes also update file that creates default container for the
certificate.

ipaserver/install/plugins/upload_cacrt.py

@@ -0,0 +1,56 @@
+# Authors:
+#   Alexander Bokovoy <abokovoy@redhat.com>
+#
+# Copyright (C) 2012  Red Hat
+# see file 'COPYING' for use and warranty information
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from ipaserver.install.plugins import MIDDLE
+from ipaserver.install.plugins.baseupdate import PostUpdate
+from ipaserver.install.dsinstance import realm_to_serverid, config_dirname
+from ipaserver.install import certs
+from ipalib import api
+from ipapython.dn import DN
+import base64
+
+class update_upload_cacrt(PostUpdate):
+    """
+    Upload public CA certificate to LDAP
+    """
+    order=MIDDLE
+
+    def execute(self, **options):
+        ldap = self.obj.backend
+        (cdn, ipa_config) = ldap.get_ipa_config()
+        subject_base = ipa_config.get('ipacertificatesubjectbase', [None])[0]
+        dirname = config_dirname(realm_to_serverid(api.env.realm))
+        certdb = certs.CertDB(api.env.realm, nssdir=dirname, subject_base=subject_base)
+
+        dercert = certdb.get_cert_from_db(certdb.cacert_name, pem=False)
+        cadercert = base64.b64encode(dercert)
+
+        updates = {}
+        dn = DN(('cn', 'CACert'), ('cn', 'ipa'), ('cn','etc'), api.env.basedn)
+
+        cacrt_entry = ['objectclass:nsContainer',
+                       'objectclass:pkiCA',
+                       'cn:CAcert',
+                       'cACertificate;binary:%s' % cadercert,
+                      ]
+        updates[dn] = {'dn': dn, 'default': cacrt_entry}
+
+        return (False, True, [updates])
+
+api.register(update_upload_cacrt)