Use GSSAPI auth for the ipa-replica-manage list and del commands.

This creates a new role, replicaadmin, so a non-DM user can do
limited management of replication agreements.

Note that with cn=config if an unauthorized user performs a search
an error is not returned, no entries are returned. This makes it
difficult to determine if there are simply no replication agreements or
we aren't allowed to see them. Once the ipaldap.py module gets
replaced by ldap2 we can use Get Effective Rights to easily tell the
difference.

install/tools/ipa-replica-manage

@@ -27,6 +27,7 @@ from ipaserver.install import replication, dsinstance, installutils
 from ipaserver import ipaldap
 from ipapython import version
 from ipalib import util
+from ipalib import errors
 
 def parse_options():
     from optparse import OptionParser
@@ -102,12 +103,15 @@ def del_master(replman, hostname, force=False):
     try:
         t = replman.get_agreement_type(hostname)
     except ldap.NO_SUCH_OBJECT:
-        print "No replication agreement found for %s" % hostname
+        print "No replication agreement found for '%s'" % hostname
+        return
+    except errors.NotFound:
+        print "No replication agreement found for '%s'" % hostname
+        return
 
     if t == replication.IPA_REPLICA:
-        dirman_passwd = getpass.getpass("Directory Manager password (%s): " % hostname)
         try:
-            other_replman = replication.ReplicationManager(hostname, dirman_passwd)
+            other_replman = replication.ReplicationManager(hostname, dirman_passwd=None)
             other_replman.suffix = get_suffix()
             other_replman.delete_agreement(replman.conn.host)
         except Exception, e:
@@ -179,10 +183,13 @@ def synch_master(replman, hostname):
 def main():
     options, args = parse_options()
     
+    dirman_passwd = None
+
     if options.dirman_passwd:
         dirman_passwd = options.dirman_passwd
     else:
-        dirman_passwd = getpass.getpass("Directory Manager password: ")
+        if args[0] in ["add", "init"]:
+            dirman_passwd = getpass.getpass("Directory Manager password: ")
 
     if options.host:
         host = options.host
@@ -227,5 +234,12 @@ except SystemExit, e:
 except ldap.INVALID_CREDENTIALS:
     print "Invalid password"
     sys.exit(1)
+except ldap.INSUFFICIENT_ACCESS:
+    print "Insufficient access"
+    sys.exit(1)
+except ldap.LOCAL_ERROR, e:
+    print e.args[0]['info']
+    sys.exit(1)
 except Exception, e:
     print "unexpected error: %s" % str(e)
+    sys.exit(1)

install/updates/40-delegation.update

@@ -72,6 +72,13 @@ add:objectClass: nestedgroup
 add:cn: certadmin
 add:description: Certificate Administrators
 
+dn: cn=replicaadmin,cn=rolegroups,cn=accounts,$SUFFIX
+add:objectClass: top
+add:objectClass: nestedgroup
+add:cn: replicaadmin
+add:description: Replication Administrators
+add:member:'uid=admin,cn=users,cn=accounts,$SUFFIX'
+
 # Add the taskgroups referenced by the ACIs for user administration
 
 dn: cn=taskgroups,cn=accounts,$SUFFIX
@@ -648,3 +655,33 @@ add: aci: '(targetattr = "objectClass")(target =
  $SUFFIX" )(version 3.0 ; acl "Certificate Remove Hold"
   ; allow (write) groupdn = "ldap:///cn=certificate_remove_hold,
  cn=taskgroups,cn=accounts,$SUFFIX";)'
+
+# Taskgroup for managing replicas
+dn: cn=managereplica,cn=taskgroups,cn=accounts,$SUFFIX
+add:objectClass: top
+add:objectClass: nestedgroup
+add:cn: managereplica
+add:description: Manage Replication Agreements
+add:member:'cn=replicaadmin,cn=rolegroups,cn=accounts,$SUFFIX'
+
+# Taskgroup for deleting replicas
+dn: cn=deletereplica,cn=taskgroups,cn=accounts,$SUFFIX
+add:objectClass: top
+add:objectClass: nestedgroup
+add:cn: deletereplica
+add:description: Delete Replication Agreements
+add:member:'cn=replicaadmin,cn=rolegroups,cn=accounts,$SUFFIX'
+
+# Add acis allowing admins to read/write/delete replicas
+dn: cn="$SUFFIX",cn=mapping tree,cn=config
+add: aci: '(targetattr=*)(targetfilter="(|(objectclass=nsds5Replica)
+ (objectclass=nsds5replicationagreement)(objectclass=
+ nsDSWindowsReplicationAgreement))")(version 3.0; acl "Manage
+  replication agreements"; allow (read, write, search) groupdn =
+  "ldap:///cn=managereplica,cn=taskgroups,cn=accounts,$SUFFIX";)'
+
+dn: cn="$SUFFIX",cn=mapping tree,cn=config
+add: aci: '(targetattr=*)(targetfilter="(|(objectclass=
+ nsds5replicationagreement)(objectclass=nsDSWindowsReplicationAgreement
+ ))")(version 3.0;acl "Delete replication agreements";allow (delete)
+  groupdn = "ldap:///cn=deletereplica,cn=taskgroups,cn=accounts,$SUFFIX";)'

ipaserver/install/dsinstance.py

@@ -148,6 +148,8 @@ class DsInstance(service.Service):
         self.pkcs12_info = None
         self.ds_user = None
         self.dercert = None
+        self.uidstart = 1100
+        self.gidstart = 1100
         if realm_name:
             self.suffix = util.realm_to_suffix(self.realm_name)
             self.__setup_sub_dict()

ipaserver/install/replication.py

@@ -38,6 +38,8 @@ TIMEOUT = 120
 IPA_REPLICA = 1
 WINSYNC = 2
 
+SASL_AUTH = ldap.sasl.sasl({}, 'GSSAPI')
+
 class ReplicationManager:
     """Manage replication agreements between DS servers, and sync
     agreements with Windows servers"""
@@ -45,8 +47,13 @@ class ReplicationManager:
         self.hostname = hostname
         self.dirman_passwd = dirman_passwd
 
+        # If we are passed a password we'll use it as the DM password
+        # otherwise we'll do a GSSAPI bind.
         self.conn = ipaldap.IPAdmin(hostname, port=PORT, cacert=CACERT)
-        self.conn.do_simple_bind(bindpw=dirman_passwd)
+        if dirman_passwd:
+            self.conn.do_simple_bind(bindpw=dirman_passwd)
+        else:
+            self.conn.sasl_interactive_bind_s('', SASL_AUTH)
 
         self.repl_man_passwd = dirman_passwd
 
@@ -98,6 +105,16 @@ class ReplicationManager:
         return retval
 
     def find_replication_dns(self, conn):
+        """
+        The replication agreements are stored in
+        cn="$SUFFIX",cn=mapping tree,cn=config
+
+        FIXME: Rather than failing with a read error if a user tries
+        to read this it simply returns zero entries. We need to use
+        GER to determine if we are allowed to read this to return a proper
+        response. For now just return "No entries" even if the user may
+        not be allowed to see them.
+        """
         filt = "(|(objectclass=nsDSWindowsReplicationAgreement)(objectclass=nsds5ReplicationAgreement))"
         try:
             ents = conn.search_s("cn=mapping tree,cn=config", ldap.SCOPE_SUBTREE, filt)
@@ -465,6 +482,7 @@ class ReplicationManager:
         # allow connections using two different CA certs
         other_conn = ipaldap.IPAdmin(other_hostname, port=oth_port, cacert=oth_cacert)
         try:
+            # For now we always require a password to set up new replica
             other_conn.do_simple_bind(binddn=oth_binddn, bindpw=oth_bindpw)
         except Exception, e:
             if iswinsync: