Improve user addition to default group in user-add

On adding new user, user-add tries to make it a member of default
user group. This, however, can raise AlreadyGroupMember when the
user is already member of this group due to automember rule or
default group configured. This patch makes sure AlreadyGroupMember
exception is caught in such cases.

https://fedorahosted.org/freeipa/ticket/3097

ipalib/plugins/user.py

@@ -538,7 +538,15 @@ class user_add(LDAPCreate):
         # add the user we just created into the default primary group
         def_primary_group = config.get('ipadefaultprimarygroup')
         group_dn = self.api.Object['group'].get_dn(def_primary_group)
-        ldap.add_entry_to_group(dn, group_dn)
+
+        # if the user is already a member of default primary group,
+        # do not raise error
+        # this can happen if automember rule or default group is set
+        try:
+            ldap.add_entry_to_group(dn, group_dn)
+        except errors.AlreadyGroupMember:
+            pass
+
         if self.api.env.wait_for_attr:
             newentry = wait_for_value(ldap, dn, 'memberOf', def_primary_group)
             entry_from_entry(entry_attrs, newentry)

tests/test_xmlrpc/test_user_plugin.py

@@ -66,6 +66,7 @@ class test_user(Declarative):
     cleanup_commands = [
         ('user_del', [user1, user2, renameduser1, admin2], {'continue': True}),
         ('group_del', [group1], {}),
+        ('automember_default_group_remove', [], {'type': u'group'}),
     ]
 
     tests = [
@@ -1682,4 +1683,68 @@ class test_user(Declarative):
                 container=admins_group),
         ),
 
+        dict(
+            desc='Set default automember group for groups as ipausers',
+            command=(
+                'automember_default_group_set', [], dict(
+                    type=u'group',
+                    automemberdefaultgroup=u'ipausers'
+                    )
+            ),
+            expected=dict(
+                result=dict(
+                    cn=[u'Group'],
+                    automemberdefaultgroup=[DN(('cn', 'ipausers'), ('cn', 'groups'), ('cn', 'accounts'), api.env.basedn)],
+                ),
+                value=u'group',
+                summary=u'Set default (fallback) group for automember "group"',
+            ),
+        ),
+
+        dict(
+            desc='Delete "%s"' % user2,
+            command=('user_del', [user2], {}),
+            expected=dict(
+                result=dict(failed=u''),
+                summary=u'Deleted user "%s"' % user2,
+                value=user2,
+            ),
+        ),
+
+        dict(
+            desc='Create %r' % user2,
+            command=(
+                'user_add', [user2], dict(givenname=u'Test', sn=u'User2')
+            ),
+            expected=dict(
+                value=user2,
+                summary=u'Added user "tuser2"',
+                result=dict(
+                    gecos=[u'Test User2'],
+                    givenname=[u'Test'],
+                    homedirectory=[u'/home/tuser2'],
+                    krbprincipalname=[u'tuser2@' + api.env.realm],
+                    has_keytab=False,
+                    has_password=False,
+                    loginshell=[u'/bin/sh'],
+                    objectclass=objectclasses.user,
+                    sn=[u'User2'],
+                    uid=[user2],
+                    uidnumber=[fuzzy_digits],
+                    gidnumber=[fuzzy_digits],
+                    mail=[u'%s@%s' % (user2, api.env.domain)],
+                    displayname=[u'Test User2'],
+                    cn=[u'Test User2'],
+                    initials=[u'TU'],
+                    ipauniqueid=[fuzzy_uuid],
+                    krbpwdpolicyreference=[DN(('cn', 'global_policy'), ('cn', api.env.realm), ('cn', 'kerberos'),
+                                        api.env.basedn)],
+                    mepmanagedentry=[DN(('cn', user2), ('cn', 'groups'), ('cn', 'accounts'),
+                                        api.env.basedn)],
+                    memberof_group=[u'ipausers'],
+                    dn=DN(('uid', 'tuser2'), ('cn', 'users'), ('cn', 'accounts'),
+                          api.env.basedn),
+                ),
+            ),
+        ),
     ]