# Authors: Ade Lee # # Copyright (C) 2014 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 . # from __future__ import absolute_import import logging import os import pwd import shutil import tempfile import base64 import six # pylint: disable=import-error from six.moves.configparser import RawConfigParser # pylint: enable=import-error from ipalib import api from ipalib import x509 from ipaplatform.paths import paths from ipapython import directivesetter from ipapython import ipautil from ipapython.dn import DN from ipaserver.install import cainstance from ipaserver.install import installutils from ipaserver.install import ldapupdate from ipaserver.install.dogtaginstance import DogtagInstance from ipaserver.plugins import ldap2 logger = logging.getLogger(__name__) # When IPA is installed with DNS support, this CNAME should hold all IPA # replicas with KRA configured IPA_KRA_RECORD = "ipa-kra" ADMIN_GROUPS = [ 'Enterprise CA Administrators', 'Enterprise KRA Administrators', 'Security Domain Administrators' ] class KRAInstance(DogtagInstance): """ We assume that the CA has already been installed, and we use the same tomcat instance to host both the CA and KRA. The mod_nss database will contain the RA agent cert that will be used to do authenticated requests against dogtag. The RA agent cert will be the same for both the CA and KRA. """ tracking_reqs = ('auditSigningCert cert-pki-kra', 'transportCert cert-pki-kra', 'storageCert cert-pki-kra') def __init__(self, realm): super(KRAInstance, self).__init__( realm=realm, subsystem="KRA", service_desc="KRA server", config=paths.KRA_CS_CFG_PATH, ) self.basedn = DN(('o', 'kra'), ('o', 'ipaca')) def configure_instance(self, realm_name, host_name, dm_password, admin_password, pkcs12_info=None, master_host=None, subject_base=None, subject=None, promote=False): """Create a KRA instance. To create a clone, pass in pkcs12_info. """ self.fqdn = host_name self.dm_password = dm_password self.admin_groups = ADMIN_GROUPS self.admin_password = admin_password self.pkcs12_info = pkcs12_info if self.pkcs12_info is not None or promote: self.clone = True self.master_host = master_host self.subject_base = \ subject_base or installutils.default_subject_base(realm_name) self.subject = \ subject or installutils.default_ca_subject_dn(self.subject_base) self.realm = realm_name self.suffix = ipautil.realm_to_suffix(realm_name) # Confirm that a KRA does not already exist if self.is_installed(): raise RuntimeError( "KRA already installed.") # Confirm that a Dogtag 10 CA instance already exists ca = cainstance.CAInstance(self.realm) if not ca.is_installed(): raise RuntimeError( "KRA configuration failed. " "A Dogtag CA must be installed first") if promote: self.step("creating installation admin user", self.setup_admin) self.step("configuring KRA instance", self.__spawn_instance) if not self.clone: self.step("create KRA agent", self.__create_kra_agent) if promote: self.step("destroying installation admin user", self.teardown_admin) self.step("enabling ephemeral requests", self.enable_ephemeral) self.step("restarting KRA", self.restart_instance) self.step("configure certmonger for renewals", self.configure_certmonger_renewal) self.step("configure certificate renewals", self.configure_renewal) self.step("configure HTTP to proxy connections", self.http_proxy) if not self.clone: self.step("add vault container", self.__add_vault_container) self.step("apply LDAP updates", self.__apply_updates) self.step("enabling KRA instance", self.__enable_instance) try: self.start_creation(runtime=120) finally: self.clean_pkispawn_files() def __spawn_instance(self): """ Create and configure a new KRA instance using pkispawn. Creates a configuration file with IPA-specific parameters and passes it to the base class to call pkispawn """ # Create an empty and secured file (cfg_fd, cfg_file) = tempfile.mkstemp() os.close(cfg_fd) pent = pwd.getpwnam(self.service_user) os.chown(cfg_file, pent.pw_uid, pent.pw_gid) self.tmp_agent_db = tempfile.mkdtemp( prefix="tmp-", dir=paths.VAR_LIB_IPA) tmp_agent_pwd = ipautil.ipa_generate_password() # Create a temporary file for the admin PKCS #12 file (admin_p12_fd, admin_p12_file) = tempfile.mkstemp() os.close(admin_p12_fd) # Create KRA configuration config = RawConfigParser() config.optionxform = str config.add_section("KRA") # Security Domain Authentication config.set("KRA", "pki_security_domain_https_port", "443") config.set("KRA", "pki_security_domain_password", self.admin_password) config.set("KRA", "pki_security_domain_user", self.admin_user) # issuing ca config.set("KRA", "pki_issuing_ca_uri", "https://%s" % ipautil.format_netloc(self.fqdn, 443)) # Server config.set("KRA", "pki_enable_proxy", "True") config.set("KRA", "pki_restart_configured_instance", "False") config.set("KRA", "pki_backup_keys", "True") config.set("KRA", "pki_backup_password", self.admin_password) # Client security database config.set("KRA", "pki_client_database_dir", self.tmp_agent_db) config.set("KRA", "pki_client_database_password", tmp_agent_pwd) config.set("KRA", "pki_client_database_purge", "True") config.set("KRA", "pki_client_pkcs12_password", self.admin_password) # Administrator config.set("KRA", "pki_admin_name", self.admin_user) config.set("KRA", "pki_admin_uid", self.admin_user) config.set("KRA", "pki_admin_email", "root@localhost") config.set("KRA", "pki_admin_password", self.admin_password) config.set("KRA", "pki_admin_nickname", "ipa-ca-agent") config.set("KRA", "pki_admin_subject_dn", str(DN(('cn', 'ipa-ca-agent'), self.subject_base))) config.set("KRA", "pki_import_admin_cert", "False") config.set("KRA", "pki_client_admin_cert_p12", admin_p12_file) # Directory server config.set("KRA", "pki_ds_ldap_port", "389") config.set("KRA", "pki_ds_password", self.dm_password) config.set("KRA", "pki_ds_base_dn", six.text_type(self.basedn)) config.set("KRA", "pki_ds_database", "ipaca") config.set("KRA", "pki_ds_create_new_db", "False") self._use_ldaps_during_spawn(config) # Certificate subject DNs config.set("KRA", "pki_subsystem_subject_dn", str(DN(('cn', 'CA Subsystem'), self.subject_base))) config.set("KRA", "pki_sslserver_subject_dn", str(DN(('cn', self.fqdn), self.subject_base))) config.set("KRA", "pki_audit_signing_subject_dn", str(DN(('cn', 'KRA Audit'), self.subject_base))) config.set( "KRA", "pki_transport_subject_dn", str(DN(('cn', 'KRA Transport Certificate'), self.subject_base))) config.set( "KRA", "pki_storage_subject_dn", str(DN(('cn', 'KRA Storage Certificate'), self.subject_base))) # Certificate nicknames # Note that both the server certs and subsystem certs reuse # the ca certs. config.set("KRA", "pki_subsystem_nickname", "subsystemCert cert-pki-ca") config.set("KRA", "pki_sslserver_nickname", "Server-Cert cert-pki-ca") config.set("KRA", "pki_audit_signing_nickname", "auditSigningCert cert-pki-kra") config.set("KRA", "pki_transport_nickname", "transportCert cert-pki-kra") config.set("KRA", "pki_storage_nickname", "storageCert cert-pki-kra") # Shared db settings # Needed because CA and KRA share the same database # We will use the dbuser created for the CA config.set("KRA", "pki_share_db", "True") config.set( "KRA", "pki_share_dbuser_dn", str(DN(('uid', 'pkidbuser'), ('ou', 'people'), ('o', 'ipaca')))) if not (os.path.isdir(paths.PKI_TOMCAT_ALIAS_DIR) and os.path.isfile(paths.PKI_TOMCAT_PASSWORD_CONF)): # generate pin which we know can be used for FIPS NSS database pki_pin = ipautil.ipa_generate_password() config.set("KRA", "pki_pin", pki_pin) else: pki_pin = None _p12_tmpfile_handle, p12_tmpfile_name = tempfile.mkstemp(dir=paths.TMP) if self.clone: krafile = self.pkcs12_info[0] shutil.copy(krafile, p12_tmpfile_name) pent = pwd.getpwnam(self.service_user) os.chown(p12_tmpfile_name, pent.pw_uid, pent.pw_gid) # Security domain registration config.set("KRA", "pki_security_domain_hostname", self.fqdn) config.set("KRA", "pki_security_domain_https_port", "443") config.set("KRA", "pki_security_domain_user", self.admin_user) config.set("KRA", "pki_security_domain_password", self.admin_password) # Clone config.set("KRA", "pki_clone", "True") config.set("KRA", "pki_clone_pkcs12_path", p12_tmpfile_name) config.set("KRA", "pki_clone_pkcs12_password", self.dm_password) config.set("KRA", "pki_clone_setup_replication", "False") config.set( "KRA", "pki_clone_uri", "https://%s" % ipautil.format_netloc(self.master_host, 443)) else: # the admin cert file is needed for the first instance of KRA cert = self.get_admin_cert() # First make sure that the directory exists parentdir = os.path.dirname(paths.ADMIN_CERT_PATH) if not os.path.exists(parentdir): os.makedirs(parentdir) with open(paths.ADMIN_CERT_PATH, "wb") as admin_path: admin_path.write( base64.b64encode(cert.public_bytes(x509.Encoding.DER)) ) # Generate configuration file with open(cfg_file, "w") as f: config.write(f) try: DogtagInstance.spawn_instance( self, cfg_file, nolog_list=(self.dm_password, self.admin_password, pki_pin, tmp_agent_pwd) ) finally: os.remove(p12_tmpfile_name) os.remove(cfg_file) os.remove(admin_p12_file) shutil.move(paths.KRA_BACKUP_KEYS_P12, paths.KRACERT_P12) logger.debug("completed creating KRA instance") def __create_kra_agent(self): """ Create KRA agent, assign a certificate, and add the user to the appropriate groups for accessing KRA services. """ # get RA agent certificate cert = x509.load_certificate_from_file(paths.RA_AGENT_PEM) # connect to KRA database conn = ldap2.ldap2(api) conn.connect(autobind=True) # create ipakra user with RA agent certificate user_dn = DN(('uid', "ipakra"), ('ou', 'people'), self.basedn) entry = conn.make_entry( user_dn, objectClass=['top', 'person', 'organizationalPerson', 'inetOrgPerson', 'cmsuser'], uid=["ipakra"], sn=["IPA KRA User"], cn=["IPA KRA User"], usertype=["undefined"], userCertificate=[cert], description=['2;%s;%s;%s' % ( cert.serial_number, DN(self.subject), DN(('CN', 'IPA RA'), self.subject_base))]) conn.add_entry(entry) # add ipakra user to Data Recovery Manager Agents group group_dn = DN(('cn', 'Data Recovery Manager Agents'), ('ou', 'groups'), self.basedn) conn.add_entry_to_group(user_dn, group_dn, 'uniqueMember') conn.disconnect() def __add_vault_container(self): self._ldap_mod( 'vault.ldif', {'SUFFIX': self.suffix}, raise_on_err=True) def __apply_updates(self): sub_dict = { 'SUFFIX': self.suffix, } ld = ldapupdate.LDAPUpdate(dm_password=self.dm_password, sub_dict=sub_dict) ld.update([os.path.join(paths.UPDATES_DIR, '40-vault.update')]) def enable_ephemeral(self): """ Enable ephemeral KRA requests to reduce the number of LDAP write operations. """ with installutils.stopped_service('pki-tomcatd', 'pki-tomcat'): directivesetter.set_directive( self.config, 'kra.ephemeralRequests', 'true', quotes=False, separator='=') # A restart is required def update_cert_config(self, nickname, cert): """ When renewing a KRA subsystem certificate the configuration file needs to get the new certificate as well. nickname is one of the known nicknames. cert is a DER-encoded certificate. """ # The cert directive to update per nickname directives = { 'auditSigningCert cert-pki-kra': 'kra.audit_signing.cert', 'storageCert cert-pki-kra': 'kra.storage.cert', 'transportCert cert-pki-kra': 'kra.transport.cert', 'subsystemCert cert-pki-kra': 'kra.subsystem.cert', 'Server-Cert cert-pki-ca': 'kra.sslserver.cert'} if nickname in directives: super(KRAInstance, self).update_cert_cs_cfg( directives[nickname], cert) def __enable_instance(self): self.ldap_enable('KRA', self.fqdn, None, self.suffix)