ipa-kdb: Change install to use the new ipa-kdb kdc backend

Use ipakdb instead of kldap and change install procedures accordingly
Note that we do not need to store the master key in a keytab as we can
read it off of ldap in our driver.

install/share/Makefile.am

@@ -13,8 +13,6 @@ app_DATA =				\
 	caJarSigningCert.cfg.template	\
 	default-aci.ldif		\
 	default-hbac.ldif		\
-	default-keytypes.ldif		\
-	default-pwpolicy.ldif		\
 	delegation.ldif			\
 	replica-acis.ldif		\
 	ds-nfiles.ldif			\

install/share/default-keytypes.ldif

@@ -1,33 +0,0 @@
-#kerberos keytypes
-dn: cn=$REALM,cn=kerberos,$SUFFIX
-changetype: modify
-add: krbSupportedEncSaltTypes
-krbSupportedEncSaltTypes: aes256-cts:normal
-krbSupportedEncSaltTypes: aes256-cts:special
-krbSupportedEncSaltTypes: aes128-cts:normal
-krbSupportedEncSaltTypes: aes128-cts:special
-krbSupportedEncSaltTypes: des3-hmac-sha1:normal
-krbSupportedEncSaltTypes: des3-hmac-sha1:special
-krbSupportedEncSaltTypes: arcfour-hmac:normal
-krbSupportedEncSaltTypes: arcfour-hmac:special
-krbSupportedEncSaltTypes: des-hmac-sha1:normal
-krbSupportedEncSaltTypes: des-cbc-md5:normal
-krbSupportedEncSaltTypes: des-cbc-crc:normal
-krbSupportedEncSaltTypes: des-cbc-crc:v4
-krbSupportedEncSaltTypes: des-cbc-crc:afs3
--
-add: krbMaxTicketLife
-krbMaxTicketLife: 86400
--
-add: krbMaxRenewableAge
-krbMaxRenewableAge: 604800
-
-#kerberos keytypes
-dn: cn=$REALM,cn=kerberos,$SUFFIX
-changetype: modify
-add: krbDefaultEncSaltTypes
-krbDefaultEncSaltTypes: aes256-cts:special
-krbDefaultEncSaltTypes: aes128-cts:special
-krbDefaultEncSaltTypes: des3-hmac-sha1:special
-krbDefaultEncSaltTypes: arcfour-hmac:special
-

install/share/default-pwpolicy.ldif

@@ -1,14 +0,0 @@
-dn: cn=global_policy,cn=$REALM,cn=kerberos,$SUFFIX
-changetype: add
-objectClass: top
-objectClass: nsContainer
-objectClass: krbPwdPolicy
-krbMinPwdLife: 3600
-krbPwdMinDiffChars: 0
-krbPwdMinLength: 8
-krbPwdHistoryLength: 0
-krbMaxPwdLife: 7776000
-krbPwdMaxFailure: 6
-krbPwdFailureCountInterval: 60
-krbPwdLockoutDuration: 600
-

install/share/kdc.conf.template

@@ -6,7 +6,6 @@
 [realms]
  $REALM = {
   master_key_type = aes256-cts
-  supported_enctypes = aes256-cts:normal aes128-cts:normal des3-hmac-sha1:normal arcfour-hmac:normal des-hmac-sha1:normal des-cbc-md5:normal des-cbc-crc:normal des-cbc-crc:v4 des-cbc-crc:afs3
   max_life = 7d
   max_renewable_life = 14d
   acl_file = /var/kerberos/krb5kdc/kadm5.acl

install/share/kerberos.ldif

@@ -16,3 +16,42 @@ objectClass: top
 cn: kerberos
 aci: (targetattr="*")(version 3.0; acl "KDC System Account"; allow (all) userdn= "ldap:///uid=kdc,cn=sysaccounts,cn=etc,$SUFFIX";)
 
+#Realm base object
+dn: cn=$REALM,cn=kerberos,$SUFFIX
+changetype: add
+cn: $REALM
+objectClass: top
+objectClass: krbrealmcontainer
+objectClass: krbticketpolicyaux
+krbSubTrees: $SUFFIX
+krbSearchScope: 2
+krbSupportedEncSaltTypes: aes256-cts:normal
+krbSupportedEncSaltTypes: aes256-cts:special
+krbSupportedEncSaltTypes: aes128-cts:normal
+krbSupportedEncSaltTypes: aes128-cts:special
+krbSupportedEncSaltTypes: des3-hmac-sha1:normal
+krbSupportedEncSaltTypes: des3-hmac-sha1:special
+krbSupportedEncSaltTypes: arcfour-hmac:normal
+krbSupportedEncSaltTypes: arcfour-hmac:special
+krbMaxTicketLife: 86400
+krbMaxRenewableAge: 604800
+krbDefaultEncSaltTypes: aes256-cts:special
+krbDefaultEncSaltTypes: aes128-cts:special
+krbDefaultEncSaltTypes: des3-hmac-sha1:special
+krbDefaultEncSaltTypes: arcfour-hmac:special
+
+# Default password Policy
+dn: cn=global_policy,cn=$REALM,cn=kerberos,$SUFFIX
+changetype: add
+objectClass: top
+objectClass: nsContainer
+objectClass: krbPwdPolicy
+krbMinPwdLife: 3600
+krbPwdMinDiffChars: 0
+krbPwdMinLength: 8
+krbPwdHistoryLength: 0
+krbMaxPwdLife: 7776000
+krbPwdMaxFailure: 6
+krbPwdFailureCountInterval: 60
+krbPwdLockoutDuration: 600
+

install/share/krb5.conf.template

@@ -31,11 +31,6 @@
 
 [dbmodules]
   $REALM = {
-    db_library = kldap
+    db_library = ipadb.so
-    ldap_servers = ldapi://%2fvar%2frun%2fslapd-$SERVER_ID.socket
-    ldap_kerberos_container_dn = cn=kerberos,$SUFFIX
-    ldap_kdc_dn = uid=kdc,cn=sysaccounts,cn=etc,$SUFFIX
-    ldap_kadmind_dn = uid=kdc,cn=sysaccounts,cn=etc,$SUFFIX
-    ldap_service_password_file = /var/kerberos/krb5kdc/ldappwd
   }
 

ipaserver/install/installutils.py

@@ -388,7 +388,8 @@ def get_directive(filename, directive, separator=' '):
     return None
 
 def kadmin(command):
-    ipautil.run(["kadmin.local", "-q", command])
+    ipautil.run(["kadmin.local", "-q", command,
+                                 "-x", "ipa-setup-override-restrictions"])
 
 def kadmin_addprinc(principal):
     kadmin("addprinc -randkey " + principal)

ipaserver/install/krbinstance.py

@@ -114,7 +114,8 @@ class KrbInstance(service.Service):
         host_entry.setValues('objectclass', ['top', 'ipaobject', 'nshost', 'ipahost', 'ipaservice', 'pkiuser', 'krbprincipalaux', 'krbprincipal', 'krbticketpolicyaux'])
         host_entry.setValues('krbextradata', service_entry.getValues('krbextradata'))
         host_entry.setValue('krblastpwdchange', service_entry.getValue('krblastpwdchange'))
-        host_entry.setValue('krbpasswordexpiration', service_entry.getValue('krbpasswordexpiration'))
+        if 'krbpasswordexpiration' in service_entry.toDict():
+            host_entry.setValue('krbpasswordexpiration', service_entry.getValue('krbpasswordexpiration'))
         host_entry.setValue('krbprincipalname', service_entry.getValue('krbprincipalname'))
         if 'krbticketflags' in service_entry.toDict():
             host_entry.setValue('krbticketflags', service_entry.getValue('krbticketflags'))
@@ -163,16 +164,14 @@ class KrbInstance(service.Service):
 
         self.step("setting KDC account password", self.__configure_kdc_account_password)
         self.step("adding sasl mappings to the directory", self.__configure_sasl_mappings)
-        self.step("adding kerberos entries to the DS", self.__add_krb_entries)
+        self.step("adding kerberos container to the directory", self.__add_krb_container)
+        self.step("configuring KDC", self.__configure_instance)
+        self.step("initialize kerberos container", self.__init_ipa_kdb)
         self.step("adding default ACIs", self.__add_default_acis)
-        self.step("configuring KDC", self.__create_instance)
-        self.step("adding default keytypes", self.__add_default_keytypes)
-        self.step("adding default password policy", self.__add_default_pwpolicy)
         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("exporting the kadmin keytab", self.__export_kadmin_changepw_keytab)
         self.step("adding the password extension to the directory", self.__add_pwd_extop_module)
-        self.step("adding the kerberos master key to the directory", self.__add_master_key)
         if setup_pkinit:
             self.step("creating X509 Certificate for PKINIT", self.__setup_pkinit)
             self.step("creating principal for anonymous PKINIT", self.__add_anonymous_pkinit_principal)
@@ -201,7 +200,7 @@ class KrbInstance(service.Service):
 
         self.step("adding sasl mappings to the directory", self.__configure_sasl_mappings)
         self.step("writing stash file from DS", self.__write_stash_from_ds)
-        self.step("configuring KDC", self.__create_replica_instance)
+        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)
         self.step("adding the password extension to the directory", self.__add_pwd_extop_module)
@@ -304,21 +303,12 @@ class KrbInstance(service.Service):
             logging.critical("failed to add Name Only Sasl mapping")
             raise e
 
-    def __add_krb_entries(self):
+    def __add_krb_container(self):
         self._ldap_mod("kerberos.ldif", self.sub_dict)
 
     def __add_default_acis(self):
         self._ldap_mod("default-aci.ldif", self.sub_dict)
 
-    def __add_default_keytypes(self):
-        self._ldap_mod("default-keytypes.ldif", self.sub_dict)
-
-    def __add_default_pwpolicy(self):
-        self._ldap_mod("default-pwpolicy.ldif", self.sub_dict)
-
-    def __create_replica_instance(self):
-        self.__create_instance(replica=True)
-
     def __template_file(self, path):
         template = os.path.join(ipautil.SHARE_DIR, os.path.basename(path) + ".template")
         conf = ipautil.template_file(template, self.sub_dict)
@@ -327,21 +317,23 @@ class KrbInstance(service.Service):
         fd.write(conf)
         fd.close()
 
-    def __create_instance(self, replica=False):
+    def __init_ipa_kdb(self):
+        #populate the directory with the realm structure
+        args = ["kdb5_util", "create", "-s", "-P", self.master_password,
+                                       "-r", self.realm,
+                                       "-x", "ipa-setup-override-restrictions"]
+        try:
+            ipautil.run(args, nolog=(self.master_password))
+        except ipautil.CalledProcessError, e:
+            print "Failed to initialize the realm container"
+
+    def __configure_instance(self):
         self.__template_file("/var/kerberos/krb5kdc/kdc.conf")
         self.__template_file("/etc/krb5.conf")
         self.__template_file("/usr/share/ipa/html/krb5.ini")
         self.__template_file("/usr/share/ipa/html/krb.con")
         self.__template_file("/usr/share/ipa/html/krbrealm.con")
 
-        if not replica:
-            #populate the directory with the realm structure
-            args = ["kdb5_ldap_util", "-D", "uid=kdc,cn=sysaccounts,cn=etc,"+self.suffix, "-w", self.kdc_password, "create", "-s", "-P", self.master_password, "-r", self.realm, "-subtrees", self.suffix, "-sscope", "sub"]
-            try:
-                ipautil.run(args, nolog=(self.kdc_password, self.master_password))
-            except ipautil.CalledProcessError, e:
-                print "Failed to populate the realm structure in kerberos", e
-
         MIN_KRB5KDC_WITH_WORKERS = "1.9"
         cpus = os.sysconf('SC_NPROCESSORS_ONLN')
         workers = False
@@ -401,89 +393,6 @@ class KrbInstance(service.Service):
     def __add_pwd_extop_module(self):
         self._ldap_mod("pwd-extop-conf.ldif", self.sub_dict)
 
-    def __add_master_key(self):
-        #check for a keytab file by checking if the header magic is for a keytab
-        def __is_keytab(header):
-            if header == 0x0502 or header == 0x0501 or header == 0x0205 or header == 0x0105:
-                return 1
-            else:
-                return 0
-        #check whether a keytab file is v1 or v2
-        def __keytab_version(header):
-            if header == 0x0502 or header == 0x0205:
-                return 2
-            elif header == 0x0501 or header == 0x0105:
-                return 1
-            else:
-                return 0
-        #get the Master Key from the stash file
-        try:
-            stash = open("/var/kerberos/krb5kdc/.k5."+self.realm, "r")
-            keytype = struct.unpack('h', stash.read(2))[0]
-            if __is_keytab(keytype):
-                #in v2, all numbers are stored in network order
-                if __keytab_version(keytype) > 1:
-                    __endian = '!'
-                else:
-                    __endian = ''
-                #walk the first entry (there should only be one)
-                keyentrylen = struct.unpack(__endian + 'i', stash.read(4))[0]
-                #number of components in the principal name
-                keyprinccomps = struct.unpack(__endian + 'h', stash.read(2))[0]
-                #version 1 counted the realm as a component, version 2 doesn't
-                if __keytab_version(keytype) == 1:
-                    keyprinccomps = keyprinccomps - 1
-                keyprinc = []
-                #read the components. the realm goes first, so we should
-                #end up with (realm, "K", "M")
-                for i in range(keyprinccomps + 1):
-                    keyprinccompsize = struct.unpack(__endian + 'h', stash.read(2))[0]
-                    keyprinc = keyprinc + [stash.read(keyprinccompsize)]
-                #version 2 added the principal name type, otherwise we just
-                #assume it's a regular old principal name
-                if __keytab_version(keytype) > 1:
-                    keyprinctype = struct.unpack(__endian + 'i', stash.read(4))[0]
-                else:
-                    keyprinctype = 1
-                #date the key was added to this keytab
-                keydate = struct.unpack(__endian + 'i', stash.read(4))[0]
-                #kvno
-                keyversion = struct.unpack('B', stash.read(1))[0]
-                #read the real enctype
-                keytype = struct.unpack(__endian + 'h', stash.read(2))[0]
-                keylen = struct.unpack(__endian + 'h', stash.read(2))[0]
-                keydata = stash.read(keylen)
-                #check that we parsed the whole file, so no surprises
-                keyoffset = stash.tell()
-                stash.seek(0,2)
-                if stash.tell() != keyoffset:
-                    logging.critical("Unexpected unprocessed data in Stash file (processed %ld bytes, %ld left)." % (keyoffset, stash.tell() - keyoffset))
-            else:
-                keyversion = 1
-                keyprinctype = 1
-                keyprinc = [self.realm,"K","M"]
-                keylen = struct.unpack('i', stash.read(4))[0]
-                keydata = stash.read(keylen)
-        except os.error:
-            logging.critical("Failed to retrieve Master Key from Stash file: %s")
-	#encode it in the asn.1 attribute
-        MasterKey = univ.Sequence()
-        MasterKey.setComponentByPosition(0, univ.Integer(keytype))
-        MasterKey.setComponentByPosition(1, univ.OctetString(keydata))
-        krbMKey = univ.Sequence()
-        krbMKey.setComponentByPosition(0, univ.Integer(keyversion))
-        krbMKey.setComponentByPosition(1, MasterKey)
-        asn1key = pyasn1.codec.ber.encoder.encode(krbMKey)
-
-        #protect the master key by adding an appropriate deny rule along with the key
-        mod = [(ldap.MOD_ADD, 'aci', ipautil.template_str(KRBMKEY_DENY_ACI, self.sub_dict)),
-               (ldap.MOD_ADD, 'krbMKey', str(asn1key))]
-        try:
-            self.admin_conn.modify_s(self.get_realm_suffix(), mod)
-        except ldap.TYPE_OR_VALUE_EXISTS, e:
-            logging.critical("failed to add master key to kerberos database\n")
-            raise e
-
     def __create_ds_keytab(self):
         ldap_principal = "ldap/" + self.fqdn + "@" + self.realm
         installutils.kadmin_addprinc(ldap_principal)