Add A and PTR records of ourselves during installation

If the DNS zones already exist but don't contain our own records, add
them. This patch introduces the ipalib.api into the installers. For now,
the code is still little messy. Later patches will abandon the way we
create zones now and use ipalib.api exclusively.

ipaserver/install/bindinstance.py

@@ -28,7 +28,7 @@ import service
 from ipaserver import ipaldap
 from ipapython import sysrestore
 from ipapython import ipautil
-from ipalib import util
+from ipalib import api, util
 
 def check_inst():
     # So far this file is always present in both RHEL5 and Fedora if all the necessary
@@ -122,15 +122,19 @@ class BindInstance(service.Service):
 
         zone_dn = "idnsName=%s,cn=dns,%s" % (self.domain, self.suffix)
         reverse_zone_dn = "idnsName=%s.in-addr.arpa,cn=dns,%s" % (self.reverse_subnet, self.suffix)
+        a_rr_dn = "idnsName=%s,%s" % (self.host, zone_dn)
+        ptr_rr_dn = "idnsName=%s,%s" % (self.reverse_host, reverse_zone_dn)
 
         server = ldap.initialize("ldap://" + self.fqdn)
         server.simple_bind_s()
         if object_exists(zone_dn):
-            pass # TODO: Add dns records to the zone
+            if not object_exists(a_rr_dn):
+                self.step("adding our A record", self.__setup_a_record)
         else:
             self.step("setting up our zone", self.__setup_zone)
         if object_exists(reverse_zone_dn):
-            pass # TODO: Add dns records to the reverse zone
+            if not object_exists(ptr_rr_dn):
+                self.step("adding our PTR record", self.__setup_ptr_record)
         else:
             self.step("setting up reverse zone", self.__setup_reverse_zone)
 
@@ -173,6 +177,15 @@ class BindInstance(service.Service):
     def __setup_reverse_zone(self):
         self._ldap_mod("dns_reverse.ldif", self.sub_dict)
 
+    def __setup_a_record(self):
+        api.Command.dns_add_rr(unicode(self.domain), unicode(self.host),
+                               u'A', unicode(self.ip_address))
+
+    def __setup_ptr_record(self):
+        api.Command.dns_add_rr(unicode(self.reverse_subnet + ".in-addr.arpa"),
+                               unicode(self.reverse_host), u'PTR',
+                               unicode(self.host))
+
     def __setup_principal(self):
         dns_principal = "DNS/" + self.fqdn + "@" + self.realm
         installutils.kadmin_addprinc(dns_principal)