Implement replica promotion functionality

This patch implements a new flag --promote for the ipa-replica-install command
that allows an administrative user to 'promote' an already joined client to
become a full ipa server.

The only credentials used are that of an administrator. This code relies on
ipa-custodia being available on the peer master as well as a number of other
patches to allow a computer account to request certificates for its services.

Therefore this feature is marked to work only with domain level 1 and above
servers.

Ticket: https://fedorahosted.org/freeipa/ticket/2888

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

install/tools/ipa-replica-install

@@ -30,6 +30,7 @@ ReplicaInstall = cli.install_tool(
     usage='%prog [options] REPLICA_FILE',
     log_file_name=paths.IPAREPLICA_INSTALL_LOG,
     debug_option=True,
+    use_private_ccache=False,
 )
 
 

ipaplatform/base/paths.py

@@ -360,5 +360,6 @@ class BasePathNamespace(object):
     IPA_CUSTODIA_CONF = '/etc/ipa/custodia/custodia.conf'
     IPA_CUSTODIA_SOCKET = '/run/httpd/ipa-custodia.sock'
     IPA_CUSTODIA_AUDIT_LOG = '/var/log/ipa-custodia.audit.log'
+    IPA_GETKEYTAB = '/usr/sbin/ipa-getkeytab'
 
 path_namespace = BasePathNamespace

ipapython/install/cli.py

@@ -25,6 +25,7 @@ if six.PY3:
 
 def install_tool(configurable_class, command_name, log_file_name,
                  positional_arguments=None, usage=None, debug_option=False,
+                 use_private_ccache=True,
                  uninstall_log_file_name=None,
                  uninstall_positional_arguments=None, uninstall_usage=None):
     if (uninstall_log_file_name is not None or
@@ -52,6 +53,7 @@ def install_tool(configurable_class, command_name, log_file_name,
             usage=usage,
             debug_option=debug_option,
             uninstall_kwargs=uninstall_kwargs,
+            use_private_ccache=use_private_ccache,
         )
     )
 
@@ -76,6 +78,7 @@ class ConfigureTool(admintool.AdminTool):
     configurable_class = None
     debug_option = False
     positional_arguments = None
+    use_private_ccache = True
 
     @staticmethod
     def _transform(configurable_class):
@@ -305,10 +308,12 @@ class ConfigureTool(admintool.AdminTool):
 
         signal.signal(signal.SIGTERM, self.__signal_handler)
 
-        # Use private ccache
-        with private_ccache():
+        if self.use_private_ccache:
+            with private_ccache():
+                super(ConfigureTool, self).run()
+                cfgr.run()
+        else:
             super(ConfigureTool, self).run()
-
             cfgr.run()
 
     @staticmethod

ipaserver/install/cainstance.py

@@ -260,6 +260,32 @@ def is_step_one_done():
     return False
 
 
+def find_ca_server(host_name, conn, api=api):
+    """
+    :param host_name: the preferred server
+    :param conn: a connection to the LDAP server
+    :return: the selected host name
+
+    Find a server that is a CA.
+    """
+    dn = DN(('cn', 'masters'), ('cn', 'ipa'), ('cn', 'etc'), api.env.basedn)
+    query_filter = conn.make_filter({'objectClass': 'ipaConfigObject',
+                                     'ipaConfigString': 'enabledService',
+                                     'cn': 'CA'}, rules='&')
+    try:
+        entries, trunc = conn.find_entries(filter=query_filter, base_dn=dn)
+    except errors.NotFound:
+        return None
+    if len(entries):
+        if host_name is not None:
+            for entry in entries:
+                if entry.dn[1].value == host_name:
+                    return host_name
+        # if the preferred is not found, return the first in the list
+        return entries[0].dn[1].value
+    return None
+
+
 def is_ca_installed_locally():
     """Check if CA is installed locally by checking for existence of CS.cfg
     :return:True/False

ipaserver/install/certs.py

@@ -653,6 +653,18 @@ class CertDB(object):
     def export_pem_cert(self, nickname, location):
         return self.nssdb.export_pem_cert(nickname, location)
 
+    def request_service_cert(self, nickname, principal, host, pwdconf=False):
+        self.create_from_cacert(paths.IPA_CA_CRT)
+        if pwdconf:
+            self.create_password_conf()
+        reqid = certmonger.request_cert(nssdb=self.secdir,
+                                        nickname=nickname,
+                                        principal=principal,
+                                        subject=host,
+                                        passwd_fname=self.passwd_fname)
+        # Now wait for the cert to appear. Check three times then abort
+        certmonger.wait_for_request(reqid, timeout=15)
+
 
 class _CrossProcessLock(object):
     _DATETIME_FORMAT = '%Y%m%d%H%M%S%f'

ipaserver/install/custodiainstance.py

@@ -1,6 +1,7 @@
 # Copyright (C) 2015 FreeIPa Project Contributors, see 'COPYING' for license.
 
 from ipapython.secrets.kem import IPAKEMKeys
+from ipapython.secrets.client import CustodiaClient
 from ipaplatform.paths import paths
 from service import SimpleServiceInstance
 from ipapython import ipautil
@@ -9,11 +10,14 @@ import os
 
 
 class CustodiaInstance(SimpleServiceInstance):
-    def __init__(self):
+    def __init__(self, host_name=None, realm=None):
         super(CustodiaInstance, self).__init__("ipa-custodia")
         self.config_file = paths.IPA_CUSTODIA_CONF
         self.server_keys = os.path.join(paths.IPA_CUSTODIA_CONF_DIR,
                                         'server.keys')
+        self.ldap_uri = None
+        self.fqdn = host_name
+        self.realm = realm
 
     def __config_file(self):
         template_file = os.path.basename(self.config_file) + '.template'
@@ -28,22 +32,48 @@ class CustodiaInstance(SimpleServiceInstance):
         fd.flush()
         fd.close()
 
-    def create_instance(self, *args, **kwargs):
+    def create_instance(self, dm_password=None):
+        suffix = ipautil.realm_to_suffix(self.realm)
         self.step("Generating ipa-custodia config file", self.__config_file)
         self.step("Generating ipa-custodia keys", self.__gen_keys)
-        super(CustodiaInstance, self).create_instance(*args, **kwargs)
+        super(CustodiaInstance, self).create_instance(gensvc_name='KEYS',
+                                                      fqdn=self.fqdn,
+                                                      dm_password=dm_password,
+                                                      ldap_suffix=suffix,
+                                                      realm=self.realm)
 
     def __gen_keys(self):
-        KeyStore = IPAKEMKeys({'server_keys': self.server_keys})
+        KeyStore = IPAKEMKeys({'server_keys': self.server_keys,
+                               'ldap_uri': self.ldap_uri})
         KeyStore.generate_server_keys()
 
-    def upgrade_instance(self, realm):
-        self.realm = realm
+    def upgrade_instance(self):
         if not os.path.exists(self.config_file):
             self.__config_file()
         if not os.path.exists(self.server_keys):
             self.__gen_keys()
 
+    def create_replica(self, master_host_name):
+        suffix = ipautil.realm_to_suffix(self.realm)
+        self.ldap_uri = 'ldap://%s' % master_host_name
+        self.master_host_name = master_host_name
+
+        self.step("Generating ipa-custodia config file", self.__config_file)
+        self.step("Generating ipa-custodia keys", self.__gen_keys)
+        self.step("Importing RA Key", self.__import_ra_key)
+        super(CustodiaInstance, self).create_instance(gensvc_name='KEYS',
+                                                      fqdn=self.fqdn,
+                                                      ldap_suffix=suffix,
+                                                      realm=self.realm)
+
+    def __import_ra_key(self):
+        cli = CustodiaClient(self.fqdn, self.master_host_name, self.realm)
+        cli.fetch_key('ra/ipaCert')
+
+    def import_dm_password(self, master_host_name):
+        cli = CustodiaClient(self.fqdn, master_host_name, self.realm)
+        cli.fetch_key('dm/DMHash')
+
     def __start(self):
         super(CustodiaInstance, self).__start()
 

ipaserver/install/dsinstance.py

@@ -255,8 +255,8 @@ class DsInstance(service.Service):
         self.step("configure autobind for root", self.__root_autobind)
         self.step("configure new location for managed entries", self.__repoint_managed_entries)
         self.step("configure dirsrv ccache", self.configure_dirsrv_ccache)
-        self.step("enable SASL mapping fallback", self.__enable_sasl_mapping_fallback)
-        self.step("restarting directory server", self.__restart_instance)
+        self.step("enabling SASL mapping fallback",
+                  self.__enable_sasl_mapping_fallback)
 
     def __common_post_setup(self):
         self.step("initializing group membership", self.init_memberof)
@@ -301,6 +301,7 @@ class DsInstance(service.Service):
             subject_base, idstart, idmax, pkcs12_info, ca_file=ca_file)
 
         self.__common_setup()
+        self.step("restarting directory server", self.__restart_instance)
 
         self.step("adding sasl mappings to the directory", self.__configure_sasl_mappings)
         self.step("adding default layout", self.__add_default_layout)
@@ -314,6 +315,8 @@ class DsInstance(service.Service):
         if hbac_allow:
             self.step("creating default HBAC rule allow_all", self.add_hbac)
         self.step("creating default CA ACL rule", self.add_caacl)
+        self.step("adding sasl mappings to the directory",
+                  self.__configure_sasl_mappings)
         self.step("adding entries for topology management", self.__add_topology_entries)
 
         self.__common_post_setup()
@@ -331,7 +334,8 @@ class DsInstance(service.Service):
 
     def create_replica(self, realm_name, master_fqdn, fqdn,
                        domain_name, dm_password, subject_base,
-                       pkcs12_info=None, ca_file=None, ca_is_configured=None):
+                       pkcs12_info=None, ca_file=None,
+                       ca_is_configured=None, promote=False):
         # idstart and idmax are configured so that the range is seen as
         # depleted by the DNA plugin and the replica will go and get a
         # new range from the master.
@@ -353,8 +357,15 @@ class DsInstance(service.Service):
         self.master_fqdn = master_fqdn
         if ca_is_configured is not None:
             self.ca_is_configured = ca_is_configured
+        self.promote = promote
 
-        self.__common_setup(True)
+        self.__common_setup(enable_ssl=(not self.promote))
+        self.step("restarting directory server", self.__restart_instance)
+
+        if self.promote:
+            self.step("creating DS keytab", self.__get_ds_keytab)
+            self.step("retriving DS Certificate", self.__get_ds_cert)
+            self.step("restarting directory server", self.__restart_instance)
 
         self.step("setting up initial replication", self.__setup_replica)
         self.step("adding sasl mappings to the directory", self.__configure_sasl_mappings)
@@ -374,14 +385,25 @@ class DsInstance(service.Service):
             self.realm,
             self.dm_password)
 
+        # Always connect to self over ldapi
+        conn = ipaldap.IPAdmin(self.fqdn, ldapi=True, realm=self.realm)
+        conn.do_external_bind('root')
         repl = replication.ReplicationManager(self.realm,
                                               self.fqdn,
-                                              self.dm_password)
-        repl.setup_replication(self.master_fqdn,
-                               r_binddn=DN(('cn', 'Directory Manager')),
-                               r_bindpw=self.dm_password)
+                                              self.dm_password, conn=conn)
+        if self.promote:
+            repl.setup_promote_replication(self.master_fqdn)
+        else:
+            repl.setup_replication(self.master_fqdn,
+                                   r_binddn=DN(('cn', 'Directory Manager')),
+                                   r_bindpw=self.dm_password)
         self.run_init_memberof = repl.needs_memberof_fixup()
 
+        # Now that the server is up make sure all changes happen against
+        # the local server (as repica pomotion does not have the DM password.
+        if self.admin_conn:
+            self.ldap_disconnect()
+        self.ldapi = True
 
     def __configure_sasl_mappings(self):
         # we need to remove any existing SASL mappings in the directory as otherwise they
@@ -1128,3 +1150,58 @@ class DsInstance(service.Service):
         # Create global domain level entry and set the domain level
         if self.domainlevel is not None:
             self._ldap_mod("domainlevel.ldif", self.sub_dict)
+
+    def __get_ds_keytab(self):
+
+        self.fstore.backup_file(paths.DS_KEYTAB)
+        try:
+            os.unlink(paths.DS_KEYTAB)
+        except OSError:
+            pass
+
+        installutils.install_service_keytab(self.principal,
+                                            self.master_fqdn,
+                                            paths.DS_KEYTAB)
+
+        # Configure DS to use the keytab
+        vardict = {"KRB5_KTNAME": paths.DS_KEYTAB}
+        ipautil.config_replace_variables(paths.SYSCONFIG_DIRSRV,
+                                         replacevars=vardict)
+
+        # Keytab must be owned by DS itself
+        pent = pwd.getpwnam(DS_USER)
+        os.chown(paths.DS_KEYTAB, pent.pw_uid, pent.pw_gid)
+
+    def __get_ds_cert(self):
+        subject = DN(('O', self.realm))
+        nssdb_dir = config_dirname(self.serverid)
+        db = certs.CertDB(self.realm, nssdir=nssdb_dir, subject_base=subject)
+        db.request_service_cert(self.nickname, self.principal, self.fqdn)
+        db.create_pin_file()
+
+        # Connect to self over ldapi as Directory Manager and configure SSL
+        conn = ipaldap.IPAdmin(self.fqdn, ldapi=True, realm=self.realm)
+        conn.do_external_bind('root')
+
+        mod = [(ldap.MOD_REPLACE, "nsSSLClientAuth", "allowed"),
+               (ldap.MOD_REPLACE, "nsSSL3Ciphers", "+all"),
+               (ldap.MOD_REPLACE, "allowWeakCipher", "off")]
+        conn.modify_s(DN(('cn', 'encryption'), ('cn', 'config')), mod)
+
+        mod = [(ldap.MOD_ADD, "nsslapd-security", "on")]
+        conn.modify_s(DN(('cn', 'config')), mod)
+
+        entry = conn.make_entry(
+            DN(('cn', 'RSA'), ('cn', 'encryption'), ('cn', 'config')),
+            objectclass=["top", "nsEncryptionModule"],
+            cn=["RSA"],
+            nsSSLPersonalitySSL=[self.nickname],
+            nsSSLToken=["internal (software)"],
+            nsSSLActivation=["on"],
+        )
+        conn.add_entry(entry)
+
+        conn.unbind()
+
+        # check for open secure port 636 from now on
+        self.open_ports.append(636)

ipaserver/install/httpinstance.py

@@ -112,7 +112,7 @@ class HTTPInstance(service.Service):
     def create_instance(self, realm, fqdn, domain_name, dm_password=None,
                         autoconfig=True, pkcs12_info=None,
                         subject_base=None, auto_redirect=True, ca_file=None,
-                        ca_is_configured=None):
+                        ca_is_configured=None, promote=False):
         self.fqdn = fqdn
         self.realm = realm
         self.domain = domain_name
@@ -132,6 +132,7 @@ class HTTPInstance(service.Service):
         self.ca_file = ca_file
         if ca_is_configured is not None:
             self.ca_is_configured = ca_is_configured
+        self.promote = promote
 
         # get a connection to the DS
         self.ldap_connect()
@@ -147,12 +148,13 @@ class HTTPInstance(service.Service):
         if self.ca_is_configured:
             self.step("configure certmonger for renewals",
                       self.configure_certmonger_renewal_guard)
+        self.step("setting up httpd keytab", self.__create_http_keytab)
         self.step("setting up ssl", self.__setup_ssl)
         self.step("importing CA certificates from LDAP", self.__import_ca_certs)
         if autoconfig:
             self.step("setting up browser autoconfig", self.__setup_autoconfig)
-        self.step("publish CA cert", self.__publish_ca_cert)
-        self.step("creating a keytab for httpd", self.__create_http_keytab)
+        if not self.promote:
+            self.step("publish CA cert", self.__publish_ca_cert)
         self.step("clean up any existing httpd ccache", self.remove_httpd_ccache)
         self.step("configuring SELinux for httpd", self.configure_selinux_for_httpd)
         if not self.is_kdcproxy_configured():
@@ -183,10 +185,10 @@ class HTTPInstance(service.Service):
             self.print_msg(e.format_service_warning('web interface'))
 
     def __create_http_keytab(self):
-        installutils.kadmin_addprinc(self.principal)
-        installutils.create_keytab(paths.IPA_KEYTAB, self.principal)
-        self.move_service(self.principal)
-        self.add_cert_to_service()
+        if not self.promote:
+            installutils.kadmin_addprinc(self.principal)
+            installutils.create_keytab(paths.IPA_KEYTAB, self.principal)
+            self.move_service(self.principal)
 
         pent = pwd.getpwnam("apache")
         os.chown(paths.IPA_KEYTAB, pent.pw_uid, pent.pw_gid)
@@ -309,14 +311,16 @@ class HTTPInstance(service.Service):
                 db.track_server_cert(nickname, self.principal, db.passwd_fname, 'restart_httpd')
 
             self.__set_mod_nss_nickname(nickname)
-        else:
+            self.add_cert_to_service()
 
+        elif not self.promote:
             db.create_password_conf()
             self.dercert = db.create_server_cert(self.cert_nickname, self.fqdn,
                                                  ca_db)
             db.track_server_cert(self.cert_nickname, self.principal,
                                  db.passwd_fname, 'restart_httpd')
             db.create_signing_cert("Signing-Cert", "Object Signing Cert", ca_db)
+            self.add_cert_to_service()
 
         # Fix the database permissions
         os.chmod(certs.NSS_DIR + "/cert8.db", 0o660)

ipaserver/install/installutils.py

@@ -47,12 +47,14 @@ from ipapython.admintool import ScriptError
 from ipapython.ipa_log_manager import root_logger, log_mgr
 from ipalib.util import validate_hostname
 from ipapython import config
-from ipalib import errors, x509
+from ipalib import api, errors, x509
 from ipapython.dn import DN
 from ipaserver.install import certs, service, sysupgrade
 from ipaplatform import services
 from ipaplatform.paths import paths
 from ipaplatform.tasks import tasks
+from ipapython import certmonger
+
 
 if six.PY3:
     unicode = str
@@ -1115,3 +1117,28 @@ def enable_and_start_oddjobd(sstore):
         oddjobd.start()
     except Exception as e:
         root_logger.critical("Unable to start oddjobd: {0}".format(str(e)))
+
+
+def install_service_keytab(principal, server, path):
+
+    try:
+        api.Backend.rpcclient.connect()
+
+        # Create services if none exists (we use the .forward method
+        # here so that we can control the client version number and avoid
+        # errors. This is a workaround until the API becomes version
+        # independent: FIXME
+
+        api.Backend.rpcclient.forward(
+            'service_add',
+            krbprincipalname=principal,
+            version=u'2.112'    # All the way back to 3.0 servers
+        )
+    except errors.DuplicateEntry:
+        pass
+    finally:
+        if api.Backend.rpcclient.isconnected():
+            api.Backend.rpcclient.disconnect()
+
+    args = [paths.IPA_GETKEYTAB, '-k', path, '-p', principal, '-s', server]
+    ipautil.run(args)

ipaserver/install/krbinstance.py

@@ -173,7 +173,7 @@ class KrbInstance(service.Service):
                        master_fqdn, host_name,
                        domain_name, admin_password,
                        setup_pkinit=False, pkcs12_info=None,
-                       subject_base=None):
+                       subject_base=None, promote=False):
         self.pkcs12_info = pkcs12_info
         self.subject_base = subject_base
         self.master_fqdn = master_fqdn
@@ -181,12 +181,17 @@ class KrbInstance(service.Service):
         self.__common_setup(realm_name, host_name, domain_name, admin_password)
 
         self.step("configuring KDC", self.__configure_instance)
-        self.step("creating a keytab for the directory", self.__create_ds_keytab)
-        self.step("creating a keytab for the machine", self.__create_host_keytab)
+        if not promote:
+            self.step("creating a keytab for the directory",
+                      self.__create_ds_keytab)
+            self.step("creating a keytab for the machine",
+                      self.__create_host_keytab)
         self.step("adding the password extension to the directory", self.__add_pwd_extop_module)
         if setup_pkinit:
             self.step("installing X509 Certificate for PKINIT", self.__setup_pkinit)
-        self.step("enable GSSAPI for replication", self.__convert_to_gssapi_replication)
+        if not promote:
+            self.step("enable GSSAPI for replication",
+                      self.__convert_to_gssapi_replication)
 
         self.__common_post_setup()
 

ipaserver/install/replication.py

@@ -1605,6 +1605,96 @@ class ReplicationManager(object):
         except errors.EmptyModlist:
             pass
 
+    def join_replication_managers(self, conn):
+        """
+        Create a pseudo user to use for replication.
+        """
+        dn = DN(('cn', 'replication managers'), ('cn', 'sysaccounts'),
+                ('cn', 'etc'), self.suffix)
+        mydn = DN(('krbprincipalname', 'ldap/%s@%s' % (self.hostname,
+                                                       self.realm)),
+                  ('cn', 'services'), ('cn', 'accounts'), self.suffix)
+
+        entry = conn.get_entry(dn)
+        if mydn not in entry['member']:
+            entry['member'].append(mydn)
+
+        try:
+            conn.update_entry(entry)
+        except errors.EmptyModlist:
+            pass
+
+    def add_temp_sasl_mapping(self, conn, r_hostname):
+        """
+        Create a special user to let SASL Mapping find a valid user
+        on first replication.
+        """
+        name = 'ldap/%s@%s' % (r_hostname, self.realm)
+        replica_binddn = DN(('cn', name), ('cn', 'config'))
+        entry = conn.make_entry(
+            replica_binddn,
+            objectclass=["top", "person"],
+            cn=[name],
+            sn=["replication manager pseudo user"]
+        )
+        conn.add_entry(entry)
+
+        entry = conn.get_entry(self.replica_dn())
+        entry['nsDS5ReplicaBindDN'].append(replica_binddn)
+        conn.update_entry(entry)
+
+        entry = conn.make_entry(
+            DN(('cn', 'Peer Master'), ('cn', 'mapping'), ('cn', 'sasl'),
+                ('cn', 'config')),
+            objectclass=["top", "nsSaslMapping"],
+            cn=["Peer Master"],
+            nsSaslMapRegexString=['^[^:@]+$'],
+            nsSaslMapBaseDNTemplate=[DN(('cn', 'config'))],
+            nsSaslMapFilterTemplate=['(cn=&@%s)' % self.realm],
+            nsSaslMapPriority=['1'],
+        )
+        conn.add_entry(entry)
+
+    def remove_temp_replication_user(self, conn, r_hostname):
+        """
+        Remove the special SASL Mapping user created in a previous step.
+        """
+        name = 'ldap/%s@%s' % (r_hostname, self.realm)
+        replica_binddn = DN(('cn', name), ('cn', 'config'))
+        conn.delete_entry(replica_binddn)
+
+        entry = conn.get_entry(self.replica_dn())
+        while replica_binddn in entry['nsDS5ReplicaBindDN']:
+            entry['nsDS5ReplicaBindDN'].remove(replica_binddn)
+        conn.update_entry(entry)
+
+    def setup_promote_replication(self, r_hostname):
+        # note - there appears to be a bug in python-ldap - it does not
+        # allow connections using two different CA certs
+        r_conn = ipaldap.IPAdmin(r_hostname, port=389, protocol='ldap')
+        r_conn.do_sasl_gssapi_bind()
+
+        # Setup the first half
+        l_id = self._get_replica_id(self.conn, r_conn)
+        self.basic_replication_setup(self.conn, l_id, self.repl_man_dn, None)
+        self.add_temp_sasl_mapping(self.conn, r_hostname)
+
+        # Now setup the other half
+        r_id = self._get_replica_id(r_conn, r_conn)
+        self.basic_replication_setup(r_conn, r_id, self.repl_man_dn, None)
+        self.join_replication_managers(r_conn)
+
+        self.setup_agreement(r_conn, self.conn.host, isgssapi=True)
+        self.setup_agreement(self.conn, r_hostname, isgssapi=True)
+
+        # Finally start replication
+        ret = self.start_replication(r_conn, master=False)
+        if ret != 0:
+            raise RuntimeError("Failed to start replication")
+
+        self.remove_temp_replication_user(self.conn, r_hostname)
+
+
 class CSReplicationManager(ReplicationManager):
     """ReplicationManager specific to CA agreements
 

ipaserver/install/server/install.py

@@ -814,10 +814,8 @@ def install(installer):
     otpd.create_instance('OTPD', host_name, dm_password,
                          ipautil.realm_to_suffix(realm_name))
 
-    custodia = custodiainstance.CustodiaInstance()
-    custodia.create_instance('KEYS', host_name, dm_password,
-                             ipautil.realm_to_suffix(realm_name),
-                             realm_name)
+    custodia = custodiainstance.CustodiaInstance(host_name, realm_name)
+    custodia.create_instance(dm_password)
 
     # Create a HTTP instance
     http = httpinstance.HTTPInstance(fstore)

ipaserver/install/server/replicainstall.py

@@ -8,13 +8,15 @@ import dns.exception as dnsexception
 import dns.name as dnsname
 import dns.resolver as dnsresolver
 import dns.reversename as dnsreversename
+import getpass
+import gssapi
 import os
 import shutil
 import socket
 import sys
 import tempfile
 
-from ipapython import dogtag, ipautil, sysrestore
+from ipapython import certmonger, dogtag, ipaldap, ipautil, sysrestore
 from ipapython.dn import DN
 from ipapython.install import common, core
 from ipapython.install.common import step
@@ -24,14 +26,19 @@ from ipaplatform import services
 from ipaplatform.tasks import tasks
 from ipaplatform.paths import paths
 from ipalib import api, certstore, constants, create_api, errors, x509
+import ipaclient.ipachangeconf
 import ipaclient.ntpconf
 from ipaserver.install import (
     bindinstance, ca, cainstance, certs, dns, dsinstance, httpinstance,
     installutils, kra, krbinstance, memcacheinstance, ntpinstance,
     otpdinstance, custodiainstance, service)
 from ipaserver.install.installutils import create_replica_config
+from ipaserver.install.installutils import ReplicaConfig
 from ipaserver.install.replication import (
     ReplicationManager, replica_conn_check)
+import SSSDConfig
+from subprocess import CalledProcessError
+from binascii import hexlify
 
 from .common import BaseServer
 
@@ -60,7 +67,29 @@ def make_pkcs12_info(directory, cert_name, password_name):
         return None
 
 
-def install_replica_ds(config):
+def install_http_certs(config, fstore):
+
+    # Obtain keytab for the HTTP service
+    fstore.backup_file(paths.IPA_KEYTAB)
+    try:
+        os.unlink(paths.IPA_KEYTAB)
+    except OSError:
+        pass
+
+    principal = 'HTTP/%s@%s' % (config.host_name, config.realm_name)
+    installutils.install_service_keytab(principal,
+                                        config.master_host_name,
+                                        paths.IPA_KEYTAB)
+
+    # Obtain certificate for the HTTP service
+    nssdir = certs.NSS_DIR
+    subject = DN(('O', config.realm_name))
+    db = certs.CertDB(config.realm_name, nssdir=nssdir, subject_base=subject)
+    db.request_service_cert('Server-Cert', principal, config.host_name, True)
+    # FIXME: need Signing-Cert too ?
+
+
+def install_replica_ds(config, promote=False):
     dsinstance.check_ports()
 
     # if we have a pkcs12 file, create the cert db from
@@ -79,12 +108,13 @@ def install_replica_ds(config):
         pkcs12_info=pkcs12_info,
         ca_is_configured=ipautil.file_exists(config.dir + "/cacert.p12"),
         ca_file=config.dir + "/ca.crt",
+        promote=promote,
     )
 
     return ds
 
 
-def install_krb(config, setup_pkinit=False):
+def install_krb(config, setup_pkinit=False, promote=False):
     krb = krbinstance.KrbInstance()
 
     # pkinit files
@@ -94,7 +124,7 @@ def install_krb(config, setup_pkinit=False):
     krb.create_replica(config.realm_name,
                        config.master_host_name, config.host_name,
                        config.domain_name, config.dirman_password,
-                       setup_pkinit, pkcs12_info)
+                       setup_pkinit, pkcs12_info, promote=promote)
 
     return krb
 
@@ -115,7 +145,7 @@ def install_ca_cert(ldap, base_dn, realm, cafile):
         sys.exit(1)
 
 
-def install_http(config, auto_redirect):
+def install_http(config, auto_redirect, promote=False):
     # if we have a pkcs12 file, create the cert db from
     # that. Otherwise the ds setup will create the CA
     # cert
@@ -131,7 +161,8 @@ def install_http(config, auto_redirect):
         config.realm_name, config.host_name, config.domain_name,
         config.dirman_password, False, pkcs12_info,
         auto_redirect=auto_redirect, ca_file=config.dir + "/ca.crt",
-        ca_is_configured=ipautil.file_exists(config.dir + "/cacert.p12"))
+        ca_is_configured=ipautil.file_exists(config.dir + "/cacert.p12"),
+        promote=promote)
 
     # Now copy the autoconfiguration files
     try:
@@ -153,9 +184,10 @@ def install_http(config, auto_redirect):
 def install_dns_records(config, options, remote_api):
 
     if not bindinstance.dns_container_exists(
-            config.master_host_name,
+            config.host_name,
             ipautil.realm_to_suffix(config.realm_name),
-            dm_password=config.dirman_password):
+            realm=config.realm_name, ldapi=True,
+            autobind=ipaldap.AUTOBIND_ENABLED):
         return
 
     try:
@@ -283,6 +315,43 @@ def check_dns_resolution(host_name, dns_servers):
     return no_errors
 
 
+def check_ca_enabled(api):
+    try:
+        api.Backend.rpcclient.connect()
+        result = api.Backend.rpcclient.forward(
+            'ca_is_enabled',
+            version=u'2.112'    # All the way back to 3.0 servers
+        )
+        return result['result']
+    finally:
+        if api.Backend.rpcclient.isconnected():
+            api.Backend.rpcclient.disconnect()
+
+
+def configure_certmonger():
+    messagebus = services.knownservices.messagebus
+    try:
+        messagebus.start()
+    except Exception, e:
+        print("Messagebus service unavailable: %s" % str(e))
+        sys.exit(3)
+
+    # Ensure that certmonger has been started at least once to generate the
+    # cas files in /var/lib/certmonger/cas.
+    cmonger = services.knownservices.certmonger
+    try:
+        cmonger.restart()
+    except Exception, e:
+        print("Certmonger service unavailable: %s" % str(e))
+        sys.exit(3)
+
+    try:
+        cmonger.enable()
+    except Exception, e:
+        print("Failed to enable Certmonger: %s" % str(e))
+        sys.exit(3)
+
+
 def remove_replica_info_dir(installer):
     # always try to remove decrypted replica file
     try:
@@ -311,6 +380,37 @@ def common_cleanup(func):
     return decorated
 
 
+def promote_sssd(host_name):
+    sssdconfig = SSSDConfig.SSSDConfig()
+    sssdconfig.import_config()
+    domains = sssdconfig.list_active_domains()
+
+    ipa_domain = None
+
+    for name in domains:
+        domain = sssdconfig.get_domain(name)
+        try:
+            hostname = domain.get_option('ipa_hostname')
+            if hostname == host_name:
+                ipa_domain = domain
+        except SSSDConfig.NoOptionError:
+            continue
+
+    if ipa_domain is None:
+        raise RuntimeError("Couldn't find IPA domain in sssd.conf")
+    else:
+        domain.set_option('ipa_server', host_name)
+        domain.set_option('ipa_server_mode', True)
+        sssdconfig.save_domain(domain)
+        sssdconfig.write()
+
+        sssd = services.service('sssd')
+        try:
+            sssd.restart()
+        except CalledProcessError:
+            root_logger.warning("SSSD service restart was unsuccessful.")
+
+
 @common_cleanup
 def install_check(installer):
     options = installer
@@ -433,6 +533,14 @@ def install_check(installer):
             # available
             current = 0
 
+        if current != 0:
+            raise RuntimeError(
+                "You cannot use a replica file to join a replica when the "
+                "domain is above level 0. Please join the system to the "
+                "domain by running ipa-client-install first, the try again "
+                "without a replica file."
+            )
+
         # Detect if current level is out of supported range
         # for this IPA version
         under_lower_bound = current < constants.MIN_DOMAIN_LEVEL
@@ -596,12 +704,9 @@ def install(installer):
         CA.import_ra_cert(config.dir + "/ra.p12")
         CA.fix_ra_perms()
 
-    # FIXME: must be done earlier in replica to fetch keys for CA/ldap server
-    # before they are configured
-    custodia = custodiainstance.CustodiaInstance()
-    custodia.create_instance('KEYS', config.host_name,
-                             config.dirman_password,
-                             ipautil.realm_to_suffix(config.realm_name))
+    custodia = custodiainstance.CustodiaInstance(config.host_name,
+                                                 config.realm_name)
+    custodia.create_instance(config.dirman_password)
 
     # The DS instance is created before the keytab, add the SSL cert we
     # generated
@@ -662,6 +767,412 @@ def install(installer):
     remove_replica_info_dir(installer)
 
 
+@common_cleanup
+def promote_check(installer):
+    options = installer
+
+    # FIXME: to implement yet
+    if options.setup_ca:
+        raise NotImplementedError
+    if options.setup_kra:
+        raise NotImplementedError
+    if options.setup_dns:
+        raise NotImplementedError
+
+    tasks.check_selinux_status()
+
+    client_fstore = sysrestore.FileStore(paths.IPA_CLIENT_SYSRESTORE)
+    if not client_fstore.has_files():
+        sys.exit("IPA client is not configured on this system.\n"
+                 "You must use a replica file or join the system "
+                 "using 'ipa-client-install'.")
+
+    sstore = sysrestore.StateFile(paths.SYSRESTORE)
+
+    fstore = sysrestore.FileStore(paths.SYSRESTORE)
+
+    # Check to see if httpd is already configured to listen on 443
+    if httpinstance.httpd_443_configured():
+        sys.exit("Aborting installation")
+
+    check_dirsrv()
+
+    if not options.no_ntp:
+        try:
+            ipaclient.ntpconf.check_timedate_services()
+        except ipaclient.ntpconf.NTPConflictingService, e:
+            print("WARNING: conflicting time&date synchronization service '%s'"
+                  " will" % e.conflicting_service)
+            print("be disabled in favor of ntpd")
+            print("")
+        except ipaclient.ntpconf.NTPConfigurationError:
+            pass
+
+    api.bootstrap(context='installer')
+    api.finalize()
+
+    config = ReplicaConfig()
+    config.realm_name = api.env.realm
+    config.host_name = api.env.host
+    config.domain_name = api.env.domain
+    config.master_host_name = api.env.server
+    config.setup_ca = options.setup_ca
+    config.setup_kra = options.setup_kra
+
+    installutils.verify_fqdn(config.host_name, options.no_host_dns)
+    installutils.verify_fqdn(config.master_host_name, options.no_host_dns)
+
+    # Check if ccache is available
+    try:
+        root_logger.debug('KRB5CCNAME set to %s' %
+                          os.environ.get('KRB5CCNAME', None))
+        # get default creds, will raise if none found
+        default_cred = gssapi.creds.Credentials()
+        principal = str(default_cred.name)
+    except gssapi.raw.misc.GSSError as e:
+        root_logger.debug('Failed to find default ccache: %s' % e)
+        principal = None
+
+    # Check if the principal matches the requested one (if any)
+    if principal is not None and options.principal is not None:
+        op = options.principal
+        if op.find('@') == -1:
+            op = '%s@%s' % (op, config.realm_name)
+        if principal != op:
+            root_logger.debug('Specified principal %s does not match '
+                              'available credentials (%s)' %
+                              (options.principal, principal))
+            principal = None
+
+    if principal is None:
+        (ccache_fd, ccache_name) = tempfile.mkstemp()
+        os.close(ccache_fd)
+
+        if options.principal is not None:
+            principal = options.principal
+        else:
+            principal = 'admin'
+        stdin = None
+        if principal.find('@') == -1:
+            principal = '%s@%s' % (principal, config.realm_name)
+        if options.password is not None:
+            stdin = options.password
+        else:
+            if not options.unattended:
+                try:
+                    stdin = getpass.getpass("Password for %s: " % principal)
+                except EOFError:
+                    stdin = None
+                if not stdin:
+                    raise RuntimeError("Password must be provided for %s."
+                                       % principal)
+            else:
+                if sys.stdin.isatty():
+                    root_logger.info("Password must be provided in " +
+                                     "non-interactive mode. " +
+                                     "This can be done via " +
+                                     "echo password | ipa-client-install " +
+                                     "... or with the -w option.")
+                    raise RuntimeError("Password must be provided in " +
+                                       "non-interactive mode.")
+                else:
+                    stdin = sys.stdin.readline()
+
+        try:
+            ipautil.kinit_password(principal, stdin, ccache_name)
+        except RuntimeError as e:
+            raise RuntimeError("Kerberos authentication failed: %s" % e)
+
+        os.environ['KRB5CCNAME'] = ccache_name
+
+    cafile = paths.IPA_CA_CRT
+    if not ipautil.file_exists(cafile):
+        raise RuntimeError("CA cert file is not available! Please reinstall"
+                           "the client and try again.")
+
+    ldapuri = 'ldaps://%s' % ipautil.format_netloc(config.master_host_name)
+    remote_api = create_api(mode=None)
+    remote_api.bootstrap(in_server=True, context='installer',
+                         ldap_uri=ldapuri)
+    remote_api.finalize()
+    conn = remote_api.Backend.ldap2
+    replman = None
+    try:
+        # Try out authentication
+        conn.connect(ccache=os.environ.get('KRB5CCNAME'))
+        replman = ReplicationManager(config.realm_name,
+                                     config.master_host_name, None)
+
+        # Check that we don't already have a replication agreement
+        try:
+            (acn, adn) = replman.agreement_dn(config.host_name)
+            entry = conn.get_entry(adn, ['*'])
+        except errors.NotFound:
+            pass
+        else:
+            root_logger.info('Error: A replication agreement for this '
+                             'host already exists.')
+            print('A replication agreement for this host already exists. '
+                  'It needs to be removed.')
+            print("Run this command:")
+            print("    %% ipa-replica-manage del %s --force" %
+                  config.host_name)
+            sys.exit(3)
+
+        # Detect the current domain level
+        try:
+            current = remote_api.Command['domainlevel_get']()['result']
+        except errors.NotFound:
+            # If we're joining an older master, domain entry is not
+            # available
+            current = 0
+
+        if current == 0:
+            raise RuntimeError(
+                "You must provide a file generated by ipa-replica-prepare to "
+                "create a replica when the domain is at level 0."
+            )
+
+        # Detect if current level is out of supported range
+        # for this IPA version
+        under_lower_bound = current < constants.MIN_DOMAIN_LEVEL
+        above_upper_bound = current > constants.MAX_DOMAIN_LEVEL
+
+        if under_lower_bound or above_upper_bound:
+            message = ("This version of FreeIPA does not support "
+                       "the Domain Level which is currently set for "
+                       "this domain. The Domain Level needs to be "
+                       "raised before installing a replica with "
+                       "this version is allowed to be installed "
+                       "within this domain.")
+            root_logger.error(message)
+            sys.exit(3)
+
+        # Detect if the other master can handle replication managers
+        # cn=replication managers,cn=sysaccounts,cn=etc,$SUFFIX
+        dn = DN(('cn', 'replication managers'), ('cn', 'sysaccounts'),
+                ('cn', 'etc'), ipautil.realm_to_suffix(config.realm_name))
+        try:
+            entry = conn.get_entry(dn)
+        except errors.NotFound:
+            msg = ("The Replication Managers group is not available in "
+                   "the domain. Replica promotion requires the use of "
+                   "Replication Managers to be able to replicate data. "
+                   "Upgrade the peer master or use the ipa-replica-prepare "
+                   "command on the master and use a prep file to install "
+                   "this replica.")
+            root_logger.error(msg)
+            sys.exit(3)
+
+        dns_masters = remote_api.Object['dnsrecord'].get_dns_masters()
+        if dns_masters:
+            if not options.no_host_dns:
+                root_logger.debug('Check forward/reverse DNS resolution')
+                resolution_ok = (
+                    check_dns_resolution(config.master_host_name,
+                                         dns_masters) and
+                    check_dns_resolution(config.host_name, dns_masters))
+                if not resolution_ok and installer.interactive:
+                    if not ipautil.user_input("Continue?", False):
+                        sys.exit(0)
+        else:
+            root_logger.debug('No IPA DNS servers, '
+                              'skipping forward/reverse resolution check')
+
+        entry_attrs = conn.get_ipa_config()
+        subject_base = entry_attrs.get('ipacertificatesubjectbase', [None])[0]
+        if subject_base is not None:
+            config.subject_base = DN(subject_base)
+
+        # Find if any server has a CA
+        ca_host = cainstance.find_ca_server(api.env.server, conn)
+        if ca_host is not None:
+            config.ca_host_name = ca_host
+            ca_enabled = True
+        else:
+            # FIXME: add way to pass in certificates
+            root_logger.error("The remote master does not have a CA "
+                              "installed, can't proceed without certs")
+            sys.exit(3)
+
+        if options.setup_ca:
+            if not ca_enabled:
+                root_logger.error("The remote master does not have a CA "
+                                  "installed, can't set up CA")
+                sys.exit(3)
+
+            options.realm_name = config.realm_name
+            options.host_name = config.host_name
+            options.subject = config.subject_base
+            ca.install_check(False, None, options)
+
+        if config.setup_kra:
+            try:
+                kra.install_check(remote_api, config, options)
+            except RuntimeError as e:
+                print(str(e))
+                sys.exit(1)
+    except errors.ACIError:
+        sys.exit("\nInsufficiently privileges to promote the server.")
+    except errors.LDAPError:
+        sys.exit("\nUnable to connect to LDAP server %s" %
+                 config.master_host_name)
+    finally:
+        if replman and replman.conn:
+            replman.conn.unbind()
+        if conn.isconnected():
+            conn.disconnect()
+
+    if options.setup_dns:
+        dns.install_check(False, True, options, config.host_name)
+    else:
+        config.ips = installutils.get_server_ip_address(
+            config.host_name, not installer.interactive,
+            False, options.ip_addresses)
+
+    # check connection
+    if not options.skip_conncheck:
+        replica_conn_check(
+            config.master_host_name, config.host_name, config.realm_name,
+            options.setup_ca, dogtag.Dogtag10Constants.DS_PORT)
+
+    if not ipautil.file_exists(cafile):
+        raise RuntimeError("CA cert file is not available.")
+
+    installer._ca_enabled = ca_enabled
+    installer._remote_api = remote_api
+    installer._fstore = fstore
+    installer._sstore = sstore
+    installer._config = config
+
+
+@common_cleanup
+def promote(installer):
+    options = installer
+    fstore = installer._fstore
+    sstore = installer._sstore
+    config = installer._config
+
+    # Save client file and merge in server directives
+    target_fname = paths.IPA_DEFAULT_CONF
+    fstore.backup_file(target_fname)
+    ipaconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Replica Promote")
+    ipaconf.setOptionAssignment(" = ")
+    ipaconf.setSectionNameDelimiters(("[", "]"))
+
+    config.promote = installer.promote
+    config.dirman_password = hexlify(ipautil.ipa_generate_password())
+
+    dogtag_constants = dogtag.install_constants
+
+    # FIXME: allow to use passed in certs instead
+    if installer._ca_enabled:
+        configure_certmonger()
+
+    # Create DS user/group if it doesn't exist yet
+    dsinstance.create_ds_user()
+
+    # Configure ntpd
+    if not options.no_ntp:
+        ipaclient.ntpconf.force_ntpd(sstore)
+        ntp = ntpinstance.NTPInstance()
+        ntp.create_instance()
+
+    # Configure dirsrv
+    ds = install_replica_ds(config, promote=True)
+
+    # Always try to install DNS records
+    install_dns_records(config, options, api)
+
+    # Must install http certs before changing ipa configuration file
+    # or certmonger will fail to contact the peer master
+    install_http_certs(config, fstore)
+
+    # Create the management framework config file
+    gopts = [
+        ipaconf.setOption('host', config.host_name),
+        ipaconf.rmOption('server'),
+        ipaconf.setOption('xmlrpc_uri',
+                          'https://%s/ipa/xml' %
+                          ipautil.format_netloc(config.host_name)),
+        ipaconf.setOption('ldap_uri',
+                          installutils.realm_to_ldapi_uri(config.realm_name)),
+        ipaconf.setOption('mode', 'production'),
+        ipaconf.setOption('enable_ra', 'True'),
+        ipaconf.setOption('ra_plugin', 'dogtag'),
+        ipaconf.setOption('dogtag_version',
+                          dogtag.install_constants.DOGTAG_VERSION)]
+    opts = [ipaconf.setSection('global', gopts)]
+
+    ipaconf.changeConf(target_fname, opts)
+    os.chmod(target_fname, 0o644)   # must be readable for httpd
+
+    custodia = custodiainstance.CustodiaInstance(config.host_name,
+                                                 config.realm_name)
+    custodia.create_replica(config.master_host_name)
+
+    if config.setup_ca:
+        options.realm_name = config.realm_name
+        options.domain_name = config.domain_name
+        options.host_name = config.host_name
+        options.dm_password = config.dirman_password
+
+        ca.install(False, config, options)
+
+    krb = install_krb(config,
+                      setup_pkinit=not options.no_pkinit,
+                      promote=True)
+
+    http = install_http(config,
+                        auto_redirect=not options.no_ui_redirect,
+                        promote=True)
+
+    otpd = otpdinstance.OtpdInstance()
+    otpd.create_instance('OTPD', config.host_name, config.dirman_password,
+                         ipautil.realm_to_suffix(config.realm_name))
+
+    CA = cainstance.CAInstance(
+        config.realm_name, certs.NSS_DIR,
+        dogtag_constants=dogtag_constants)
+    CA.dm_password = config.dirman_password
+    CA.configure_certmonger_renewal()
+    CA.fix_ra_perms()
+
+    # Apply any LDAP updates. Needs to be done after the replica is synced-up
+    service.print_msg("Applying LDAP updates")
+    ds.apply_updates()
+
+    if options.setup_kra:
+        kra.install(api, config, options)
+    else:
+        service.print_msg("Restarting the directory server")
+        ds.restart()
+
+    service.print_msg("Restarting the KDC")
+    krb.restart()
+
+    if config.setup_ca:
+        dogtag_service = services.knownservices[dogtag_constants.SERVICE_NAME]
+        dogtag_service.restart(dogtag_constants.PKI_INSTANCE_NAME)
+
+    if options.setup_dns:
+        api.Backend.ldap2.connect(autobind=True)
+        dns.install(False, True, options)
+
+    # Restart httpd to pick up the new IPA configuration
+    service.print_msg("Restarting the web server")
+    http.restart()
+
+    ds.replica_populate()
+
+    custodia.import_dm_password(config.master_host_name)
+
+    promote_sssd(config.host_name)
+
+    # Everything installed properly, activate ipa service.
+    services.knownservices.ipa.enable()
+
+
 class Replica(BaseServer):
     replica_file = Knob(
         str, None,
@@ -710,6 +1221,15 @@ class Replica(BaseServer):
         description="skip connection check to remote master",
     )
 
+    principal = Knob(
+        str, None,
+        sensitive=True,
+        description="User Principal allowed to promote replicas",
+        cli_short_name='P',
+    )
+
+    promote = False
+
     # ca
     external_ca = None
     external_ca_type = None
@@ -742,11 +1262,11 @@ class Replica(BaseServer):
         self._update_hosts_file = False
 
         if self.replica_file is None:
-            raise RuntimeError(
-                "you must provide a file generated by ipa-replica-prepare")
-        if not ipautil.file_exists(self.replica_file):
-            raise RuntimeError(
-                "Replica file %s does not exist" % self.replica_file)
+            self.promote = True
+        else:
+            if not ipautil.file_exists(self.replica_file):
+                raise RuntimeError("Replica file %s does not exist"
+                                   % self.replica_file)
 
         if self.setup_dns:
             #pylint: disable=no-member
@@ -759,6 +1279,12 @@ class Replica(BaseServer):
 
     @step()
     def main(self):
-        install_check(self)
-        yield
-        install(self)
+        if self.promote:
+            promote_check(self)
+            yield
+            promote(self)
+        else:
+            with ipautil.private_ccache():
+                install_check(self)
+                yield
+                install(self)

ipaserver/install/server/upgrade.py

@@ -1540,8 +1540,8 @@ def upgrade_configuration():
         except ipautil.CalledProcessError as e:
             root_logger.error("Failed to restart %s: %s", bind.service_name, e)
 
-    custodia = custodiainstance.CustodiaInstance()
-    custodia.upgrade_instance(api.env.realm)
+    custodia = custodiainstance.CustodiaInstance(api.env.host, api.env.realm)
+    custodia.upgrade_instance()
 
     ca_restart = any([
         ca_restart,