Coverage for ipalib/plugins/migration : 14%

# Authors: 

#   Pavel Zuna <pzuna@redhat.com> 

# 

# Copyright (C) 2009  Red Hat 

# see file 'COPYING' for use and warranty information 

# 

# This program is free software; you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program.  If not, see <http://www.gnu.org/licenses/>. 

import re 

import ldap as _ldap 

from ipalib import api, errors, output 

from ipalib import Command, Password, Str, Flag, StrEnum, DNParam 

from ipalib.cli import to_cli 

from ipalib.plugins.user import NO_UPG_MAGIC 

if api.env.in_server and api.env.context in ['lite', 'server']: 

    try: 

        from ipaserver.plugins.ldap2 import ldap2 

    except StandardError, e: 

        raise e 

from ipalib import _ 

from ipapython.dn import DN 

__doc__ = _(""" 

Migration to IPA 

Migrate users and groups from an LDAP server to IPA. 

This performs an LDAP query against the remote server searching for 

users and groups in a container. In order to migrate passwords you need 

to bind as a user that can read the userPassword attribute on the remote 

server. This is generally restricted to high-level admins such as 

cn=Directory Manager in 389-ds (this is the default bind user). 

The default user container is ou=People. 

The default group container is ou=Groups. 

Users and groups that already exist on the IPA server are skipped. 

Two LDAP schemas define how group members are stored: RFC2307 and 

RFC2307bis. RFC2307bis uses member and uniquemember to specify group 

members, RFC2307 uses memberUid. The default schema is RFC2307bis. 

The schema compat feature allows IPA to reformat data for systems that 

do not support RFC2307bis. It is recommended that this feature is disabled 

during migration to reduce system overhead. It can be re-enabled after 

migration. To migrate with it enabled use the "--with-compat" option. 

Migrated users do not have Kerberos credentials, they have only their 

LDAP password. To complete the migration process, users need to go 

to http://ipa.example.com/ipa/migration and authenticate using their 

LDAP password in order to generate their Kerberos credentials. 

Migration is disabled by default. Use the command ipa config-mod to 

enable it: 

ipa config-mod --enable-migration=TRUE 

If a base DN is not provided with --basedn then IPA will use either 

the value of defaultNamingContext if it is set or the first value 

in namingContexts set in the root of the remote LDAP server. 

EXAMPLES: 

The simplest migration, accepting all defaults: 

   ipa migrate-ds ldap://ds.example.com:389 

Specify the user and group container. This can be used to migrate user 

and group data from an IPA v1 server: 

   ipa migrate-ds --user-container='cn=users,cn=accounts' \\ 

       --group-container='cn=groups,cn=accounts' \\ 

       ldap://ds.example.com:389 

Since IPA v2 server already contain predefined groups that may collide with 

groups in migrated (IPA v1) server (for example admins, ipausers), users 

having colliding group as their primary group may happen to belong to 

an unknown group on new IPA v2 server. 

Use --group-overwrite-gid option to overwrite GID of already existing groups 

to prevent this issue: 

    ipa migrate-ds --group-overwrite-gid \\ 

        --user-container='cn=users,cn=accounts' \\ 

        --group-container='cn=groups,cn=accounts' \\ 

        ldap://ds.example.com:389 

Migrated users or groups may have object class and accompanied attributes 

unknown to the IPA v2 server. These object classes and attributes may be 

left out of the migration process: 

    ipa migrate-ds --user-container='cn=users,cn=accounts' \\ 

       --group-container='cn=groups,cn=accounts' \\ 

       --user-ignore-objectclass=radiusprofile \\ 

       --user-ignore-attribute=radiusgroupname \\ 

       ldap://ds.example.com:389 

""") 

# USER MIGRATION CALLBACKS AND VARS 

_krb_err_msg = _('Kerberos principal %s already exists. Use \'ipa user-mod\' to set it manually.') 

_grp_err_msg = _('Failed to add user to the default group. Use \'ipa group-add-member\' to add manually.') 

_ref_err_msg = _('Migration of LDAP search reference is not supported.') 

_dn_err_msg = _('Malformed DN') 

_supported_schemas = (u'RFC2307bis', u'RFC2307') 

_compat_dn = DN(('cn', 'Schema Compatibility'), ('cn', 'plugins'), ('cn', 'config')) 

def _pre_migrate_user(ldap, pkey, dn, entry_attrs, failed, config, ctx, **kwargs): 

    assert isinstance(dn, DN) 

    attr_blacklist = ['krbprincipalkey','memberofindirect','memberindirect'] 

    attr_blacklist.extend(kwargs.get('attr_blacklist', [])) 

    ds_ldap = ctx['ds_ldap'] 

    has_upg = ctx['has_upg'] 

    search_bases = kwargs.get('search_bases', None) 

    valid_gids = kwargs['valid_gids'] 

    if 'gidnumber' not in entry_attrs: 

        raise errors.NotFound(reason=_('%(user)s is not a POSIX user') % dict(user=pkey)) 

    else: 

        # See if the gidNumber at least points to a valid group on the remote 

        # server. 

        if entry_attrs['gidnumber'][0] not in valid_gids: 

            try: 

                (remote_dn, remote_entry) = ds_ldap.find_entry_by_attr( 

                    'gidnumber', entry_attrs['gidnumber'][0], 'posixgroup', 

                    [''], search_bases['group'] 

                ) 

                valid_gids.append(entry_attrs['gidnumber'][0]) 

            except errors.NotFound: 

                api.log.warn('GID number %s of migrated user %s does not point to a known group.' \ 

                             % (entry_attrs['gidnumber'][0], pkey)) 

            except errors.SingleMatchExpected, e: 

                # GID number matched more groups, this should not happen 

                api.log.warn('GID number %s of migrated user %s should match 1 group, but it matched %d groups' \ 

                             % (entry_attrs['gidnumber'][0], pkey, e.found)) 

    # We don't want to create a UPG so set the magic value in description 

    # to let the DS plugin know. 

    entry_attrs.setdefault('description', []) 

    entry_attrs['description'].append(NO_UPG_MAGIC) 

    # fill in required attributes by IPA 

    entry_attrs['ipauniqueid'] = 'autogenerate' 

    if 'homedirectory' not in entry_attrs: 

        homes_root = config.get('ipahomesrootdir', ('/home', ))[0] 

        home_dir = '%s/%s' % (homes_root, pkey) 

        home_dir = home_dir.replace('//', '/').rstrip('/') 

        entry_attrs['homedirectory'] = home_dir 

    if 'loginshell' not in entry_attrs: 

        default_shell = config.get('ipadefaultloginshell', ['/bin/sh'])[0] 

        entry_attrs.setdefault('loginshell', default_shell) 

    # do not migrate all attributes 

    for attr in entry_attrs.keys(): 

        if attr in attr_blacklist: 

            del entry_attrs[attr] 

    # do not migrate all object classes 

    if 'objectclass' in entry_attrs: 

        for object_class in kwargs.get('oc_blacklist', []): 

            try: 

                entry_attrs['objectclass'].remove(object_class) 

            except ValueError:  # object class not present 

                pass 

    # generate a principal name and check if it isn't already taken 

    principal = u'%s@%s' % (pkey, api.env.realm) 

    try: 

        ldap.find_entry_by_attr( 

            'krbprincipalname', principal, 'krbprincipalaux', [''] 

        ) 

    except errors.NotFound: 

        entry_attrs['krbprincipalname'] = principal 

    else: 

        failed[pkey] = unicode(_krb_err_msg % principal) 

    # Fix any attributes with DN syntax that point to entries in the old 

    # tree 

    for attr in entry_attrs.keys(): 

        if ldap.has_dn_syntax(attr): 

            for ind, value in enumerate(entry_attrs[attr]): 

                assert isinstance(value, DN) 

                try: 

                    (remote_dn, remote_entry) = ds_ldap.get_entry(value, [api.Object.user.primary_key.name, api.Object.group.primary_key.name]) 

                except errors.NotFound: 

                    api.log.warn('%s: attribute %s refers to non-existent entry %s' % (pkey, attr, value)) 

                    continue 

                if value.endswith(search_bases['user']): 

                    primary_key = api.Object.user.primary_key.name 

                    container = api.env.container_user 

                elif value.endswith(search_bases['group']): 

                    primary_key = api.Object.group.primary_key.name 

                    container = api.env.container_group 

                else: 

                    api.log.warn('%s: value %s in attribute %s does not belong into any known container' % (pkey, value, attr)) 

                    continue 

                if not remote_entry.get(primary_key): 

                    api.log.warn('%s: there is no primary key %s to migrate for %s' % (pkey, primary_key, attr)) 

                    continue 

                api.log.debug('converting DN value %s for %s in %s' % (value, attr, dn)) 

                rdnval = remote_entry[primary_key][0].lower() 

                entry_attrs[attr][ind] = DN((primary_key, rdnval), container, api.env.basedn) 

    return dn 

def _post_migrate_user(ldap, pkey, dn, entry_attrs, failed, config, ctx): 

    assert isinstance(dn, DN) 

    # add user to the default group 

    try: 

        ldap.add_entry_to_group(dn, ctx['def_group_dn']) 

    except errors.ExecutionError, e: 

        failed[pkey] = unicode(_grp_err_msg) 

    if 'description' in entry_attrs and NO_UPG_MAGIC in entry_attrs['description']: 

        entry_attrs['description'].remove(NO_UPG_MAGIC) 

        kw = {'setattr': unicode('description=%s' % ','.join(entry_attrs['description']))} 

        try: 

            api.Command['user_mod'](pkey, **kw) 

        except (errors.EmptyModlist, errors.NotFound): 

            pass 

# GROUP MIGRATION CALLBACKS AND VARS 

def _pre_migrate_group(ldap, pkey, dn, entry_attrs, failed, config, ctx, **kwargs): 

    def convert_members_rfc2307bis(member_attr, search_bases, overwrite=False): 

        """ 

        Convert DNs in member attributes to work in IPA. 

        """ 

        new_members = [] 

        entry_attrs.setdefault(member_attr, []) 

        for m in entry_attrs[member_attr]: 

            assert isinstance(m, DN) 

            try: 

                rdnval = m[0].value 

            except IndexError: 

                api.log.error('Malformed DN %s has no RDN?' % m) 

                continue 

            if m.endswith(search_bases['user']): 

                api.log.info('migrating user %s' % m) 

                m = DN((api.Object.user.primary_key.name, rdnval), api.env.container_user) 

            elif m.endswith(search_bases['group']): 

                api.log.info('migrating group %s' % m) 

                m = DN((api.Object.group.primary_key.name, rdnval), api.env.container_group) 

            else: 

                api.log.error('entry %s does not belong into any known container' % m) 

                continue 

            m = ldap.normalize_dn(m) 

            new_members.append(m) 

        del entry_attrs[member_attr] 

        if overwrite: 

            entry_attrs['member'] = [] 

        entry_attrs['member'] += new_members 

    def convert_members_rfc2307(member_attr): 

        """ 

        Convert usernames in member attributes to work in IPA. 

        """ 

        new_members = [] 

        entry_attrs.setdefault(member_attr, []) 

        for m in entry_attrs[member_attr]: 

            memberdn = DN((api.Object.user.primary_key.name, m), api.env.container_user) 

            new_members.append(ldap.normalize_dn(memberdn)) 

        entry_attrs['member'] = new_members 

    assert isinstance(dn, DN) 

    attr_blacklist = ['memberofindirect','memberindirect'] 

    attr_blacklist.extend(kwargs.get('attr_blacklist', [])) 

    schema = kwargs.get('schema', None) 

    entry_attrs['ipauniqueid'] = 'autogenerate' 

    if schema == 'RFC2307bis': 

        search_bases = kwargs.get('search_bases', None) 

        if not search_bases: 

            raise ValueError('Search bases not specified') 

        convert_members_rfc2307bis('member', search_bases, overwrite=True) 

        convert_members_rfc2307bis('uniquemember', search_bases) 

    elif schema == 'RFC2307': 

        convert_members_rfc2307('memberuid') 

    else: 

        raise ValueError('Schema %s not supported' % schema) 

    # do not migrate all attributes 

    for attr in entry_attrs.keys(): 

        if attr in attr_blacklist: 

            del entry_attrs[attr] 

    # do not migrate all object classes 

    if 'objectclass' in entry_attrs: 

        for object_class in kwargs.get('oc_blacklist', []): 

            try: 

                entry_attrs['objectclass'].remove(object_class) 

            except ValueError:  # object class not present 

                pass 

    return dn 

def _group_exc_callback(ldap, dn, entry_attrs, exc, options): 

    assert isinstance(dn, DN) 

    if isinstance(exc, errors.DuplicateEntry): 

        if options.get('groupoverwritegid', False) and \ 

           entry_attrs.get('gidnumber') is not None: 

            try: 

                new_entry_attrs = {'gidnumber':entry_attrs['gidnumber']} 

                ldap.update_entry(dn, new_entry_attrs) 

            except errors.EmptyModlist: 

                # no change to the GID 

                pass 

            # mark as success 

            return 

        elif not options.get('groupoverwritegid', False) and \ 

             entry_attrs.get('gidnumber') is not None: 

            msg = unicode(exc) 

            # add information about possibility to overwrite GID 

            msg = msg + unicode(_('. Check GID of the existing group. ' \ 

                    'Use --group-overwrite-gid option to overwrite the GID')) 

            raise errors.DuplicateEntry(message=msg) 

    raise exc 

# DS MIGRATION PLUGIN 

def construct_filter(template, oc_list): 

    oc_subfilter = ''.join([ '(objectclass=%s)' % oc for oc in oc_list]) 

    return template % oc_subfilter 

def validate_ldapuri(ugettext, ldapuri): 

    m = re.match('^ldaps?://[-\w\.]+(:\d+)?$', ldapuri) 

    if not m: 

        err_msg = _('Invalid LDAP URI.') 

        raise errors.ValidationError(name='ldap_uri', error=err_msg) 

class migrate_ds(Command): 

    __doc__ = _('Migrate users and groups from DS to IPA.') 

    migrate_objects = { 

        # OBJECT_NAME: (search_filter, pre_callback, post_callback) 

        # 

        # OBJECT_NAME - is the name of an LDAPObject subclass 

        # search_filter - is the filter to retrieve objects from DS 

        # pre_callback - is called for each object just after it was 

        #                retrieved from DS and before being added to IPA 

        # post_callback - is called for each object after it was added to IPA 

        # exc_callback - is called when adding entry to IPA raises an exception 

        # 

        # {pre, post}_callback parameters: 

        #  ldap - ldap2 instance connected to IPA 

        #  pkey - primary key value of the object (uid for users, etc.) 

        #  dn - dn of the object as it (will be/is) stored in IPA 

        #  entry_attrs - attributes of the object 

        #  failed - a list of so-far failed objects 

        #  config - IPA config entry attributes 

        #  ctx - object context, used to pass data between callbacks 

        # 

        # If pre_callback return value evaluates to False, migration 

        # of the current object is aborted. 

        'user': { 

            'filter_template' : '(&(|%s)(uid=*))', 

            'oc_option' : 'userobjectclass', 

            'oc_blacklist_option' : 'userignoreobjectclass', 

            'attr_blacklist_option' : 'userignoreattribute', 

            'pre_callback' : _pre_migrate_user, 

            'post_callback' : _post_migrate_user, 

            'exc_callback' : None 

        }, 

        'group': { 

            'filter_template' : '(&(|%s)(cn=*))', 

            'oc_option' : 'groupobjectclass', 

            'oc_blacklist_option' : 'groupignoreobjectclass', 

            'attr_blacklist_option' : 'groupignoreattribute', 

            'pre_callback' : _pre_migrate_group, 

            'post_callback' : None, 

            'exc_callback' : _group_exc_callback, 

        }, 

    } 

    migrate_order = ('user', 'group') 

    takes_args = ( 

        Str('ldapuri', validate_ldapuri, 

            cli_name='ldap_uri', 

            label=_('LDAP URI'), 

            doc=_('LDAP URI of DS server to migrate from'), 

        ), 

        Password('bindpw', 

            cli_name='password', 

            label=_('Password'), 

            confirm=False, 

            doc=_('bind password'), 

        ), 

    ) 

    takes_options = ( 

        DNParam('binddn?', 

            cli_name='bind_dn', 

            label=_('Bind DN'), 

            default=DN(('cn', 'directory manager')), 

            autofill=True, 

        ), 

        DNParam('usercontainer', 

            cli_name='user_container', 

            label=_('User container'), 

            doc=_('DN of container for users in DS relative to base DN'), 

            default=DN(('ou', 'people')), 

            autofill=True, 

        ), 

        DNParam('groupcontainer', 

            cli_name='group_container', 

            label=_('Group container'), 

            doc=_('DN of container for groups in DS relative to base DN'), 

            default=DN(('ou', 'groups')), 

            autofill=True, 

        ), 

        Str('userobjectclass+', 

            cli_name='user_objectclass', 

            label=_('User object class'), 

            doc=_('Comma-separated list of objectclasses used to search for user entries in DS'), 

            csv=True, 

            default=(u'person',), 

            autofill=True, 

        ), 

        Str('groupobjectclass+', 

            cli_name='group_objectclass', 

            label=_('Group object class'), 

            doc=_('Comma-separated list of objectclasses used to search for group entries in DS'), 

            csv=True, 

            default=(u'groupOfUniqueNames', u'groupOfNames'), 

            autofill=True, 

        ), 

        Str('userignoreobjectclass*', 

            cli_name='user_ignore_objectclass', 

            label=_('Ignore user object class'), 

            doc=_('Comma-separated list of objectclasses to be ignored for user entries in DS'), 

            csv=True, 

            default=tuple(), 

            autofill=True, 

        ), 

        Str('userignoreattribute*', 

            cli_name='user_ignore_attribute', 

            label=_('Ignore user attribute'), 

            doc=_('Comma-separated list of attributes to be ignored for user entries in DS'), 

            csv=True, 

            default=tuple(), 

            autofill=True, 

        ), 

        Str('groupignoreobjectclass*', 

            cli_name='group_ignore_objectclass', 

            label=_('Ignore group object class'), 

            doc=_('Comma-separated list of objectclasses to be ignored for group entries in DS'), 

            csv=True, 

            default=tuple(), 

            autofill=True, 

        ), 

        Str('groupignoreattribute*', 

            cli_name='group_ignore_attribute', 

            label=_('Ignore group attribute'), 

            doc=_('Comma-separated list of attributes to be ignored for group entries in DS'), 

            csv=True, 

            default=tuple(), 

            autofill=True, 

        ), 

        Flag('groupoverwritegid', 

            cli_name='group_overwrite_gid', 

            label=_('Overwrite GID'), 

            doc=_('When migrating a group already existing in IPA domain overwrite the '\ 

                  'group GID and report as success'), 

        ), 

        StrEnum('schema?', 

            cli_name='schema', 

            label=_('LDAP schema'), 

            doc=_('The schema used on the LDAP server. Supported values are RFC2307 and RFC2307bis. The default is RFC2307bis'), 

            values=_supported_schemas, 

            default=_supported_schemas[0], 

            autofill=True, 

        ), 

        Flag('continue?', 

            label=_('Continue'), 

            doc=_('Continuous operation mode. Errors are reported but the process continues'), 

            default=False, 

        ), 

        DNParam('basedn?', 

            cli_name='base_dn', 

            label=_('Base DN'), 

            doc=_('Base DN on remote LDAP server'), 

        ), 

        Flag('compat?', 

            cli_name='with_compat', 

            label=_('Ignore compat plugin'), 

            doc=_('Allows migration despite the usage of compat plugin'), 

            default=False, 

        ), 

    ) 

    has_output = ( 

        output.Output('result', 

            type=dict, 

            doc=_('Lists of objects migrated; categorized by type.'), 

        ), 

        output.Output('failed', 

            type=dict, 

            doc=_('Lists of objects that could not be migrated; categorized by type.'), 

        ), 

        output.Output('enabled', 

            type=bool, 

            doc=_('False if migration mode was disabled.'), 

        ), 

        output.Output('compat', 

            type=bool, 

            doc=_('False if migration fails because the compatibility plug-in is enabled.'), 

        ), 

    ) 

    exclude_doc = _('comma-separated list of %s to exclude from migration') 

    truncated_err_msg = _('''\ 

search results for objects to be migrated 

have been truncated by the server; 

migration process might be incomplete\n''') 

    migration_disabled_msg = _('''\ 

Migration mode is disabled. Use \'ipa config-mod\' to enable it.''') 

    pwd_migration_msg = _('''\ 

Passwords have been migrated in pre-hashed format. 

IPA is unable to generate Kerberos keys unless provided 

with clear text passwords. All migrated users need to 

login at https://your.domain/ipa/migration/ before they 

can use their Kerberos accounts.''') 

    def get_options(self): 

        """ 

        Call get_options of the baseclass and add "exclude" options 

        for each type of object being migrated. 

        """ 

        for option in super(migrate_ds, self).get_options(): 

            yield option 

        for ldap_obj_name in self.migrate_objects: 

            ldap_obj = self.api.Object[ldap_obj_name] 

            name = 'exclude_%ss' % to_cli(ldap_obj_name) 

            doc = self.exclude_doc % ldap_obj.object_name_plural 

            yield Str( 

                '%s*' % name, cli_name=name, doc=doc, csv=True, 

                default=tuple(), autofill=True 

            ) 

    def normalize_options(self, options): 

        """ 

        Convert all "exclude" option values to lower-case. 

        Also, empty List parameters are converted to None, but the migration 

        plugin doesn't like that - convert back to empty lists. 

        """ 

        for p in self.params(): 

            if p.csv: 

                if options[p.name]: 

                    options[p.name] = tuple( 

                        v.lower() for v in options[p.name] 

                    ) 

                else: 

                    options[p.name] = tuple() 

    def _get_search_bases(self, options, ds_base_dn, migrate_order): 

        search_bases = dict() 

        for ldap_obj_name in migrate_order: 

            container = options.get('%scontainer' % to_cli(ldap_obj_name)) 

            if container: 

                # Don't append base dn if user already appended it in the container dn 

                if container.endswith(ds_base_dn): 

                    search_base = container 

                else: 

                    search_base = DN(container, ds_base_dn) 

            else: 

                search_base = ds_base_dn 

            search_bases[ldap_obj_name] = search_base 

        return search_bases 

    def migrate(self, ldap, config, ds_ldap, ds_base_dn, options): 

        """ 

        Migrate objects from DS to LDAP. 

        """ 

        assert isinstance(ds_base_dn, DN) 

        migrated = {} # {'OBJ': ['PKEY1', 'PKEY2', ...], ...} 

        failed = {} # {'OBJ': {'PKEY1': 'Failed 'cos blabla', ...}, ...} 

        search_bases = self._get_search_bases(options, ds_base_dn, self.migrate_order) 

        for ldap_obj_name in self.migrate_order: 

            ldap_obj = self.api.Object[ldap_obj_name] 

            template = self.migrate_objects[ldap_obj_name]['filter_template'] 

            oc_list = options[to_cli(self.migrate_objects[ldap_obj_name]['oc_option'])] 

            search_filter = construct_filter(template, oc_list) 

            exclude = options['exclude_%ss' % to_cli(ldap_obj_name)] 

            context = dict(ds_ldap = ds_ldap) 

            migrated[ldap_obj_name] = [] 

            failed[ldap_obj_name] = {} 

            try: 

                (entries, truncated) = ds_ldap.find_entries( 

                    search_filter, ['*'], search_bases[ldap_obj_name], 

                    _ldap.SCOPE_ONELEVEL, 

                    time_limit=0, size_limit=-1, 

                    search_refs=True    # migrated DS may contain search references 

                ) 

            except errors.NotFound: 

                if not options.get('continue',False): 

                    raise errors.NotFound( 

                        reason=_('%(container)s LDAP search did not return any result ' 

                                 '(search base: %(search_base)s, ' 

                                 'objectclass: %(objectclass)s)') 

                                 % {'container': ldap_obj_name, 

                                    'search_base': search_bases[ldap_obj_name], 

                                    'objectclass': ', '.join(oc_list)} 

                    ) 

                else: 

                    truncated = False 

                    entries = [] 

            if truncated: 

                self.log.error( 

                    '%s: %s' % ( 

                        ldap_obj.name, self.truncated_err_msg 

                    ) 

                ) 

            blacklists = {} 

            for blacklist in ('oc_blacklist', 'attr_blacklist'): 

                blacklist_option = self.migrate_objects[ldap_obj_name][blacklist+'_option'] 

                if blacklist_option is not None: 

                    blacklists[blacklist] = options.get(blacklist_option, tuple()) 

                else: 

                    blacklists[blacklist] = tuple() 

            # get default primary group for new users 

            if 'def_group_dn' not in context: 

                def_group = config.get('ipadefaultprimarygroup') 

                context['def_group_dn'] = api.Object.group.get_dn(def_group) 

                try: 

                    (g_dn, g_attrs) = ldap.get_entry(context['def_group_dn'], ['gidnumber', 'cn']) 

                except errors.NotFound: 

                    error_msg = _('Default group for new users not found') 

                    raise errors.NotFound(reason=error_msg) 

                if 'gidnumber' in g_attrs: 

                    context['def_group_gid'] = g_attrs['gidnumber'][0] 

            context['has_upg'] = ldap.has_upg() 

            valid_gids = [] 

            for (dn, entry_attrs) in entries: 

                if dn is None:  # LDAP search reference 

                    failed[ldap_obj_name][entry_attrs[0]] = unicode(_ref_err_msg) 

                    continue 

                try: 

                    dn = DN(dn) 

                except ValueError: 

                    failed[ldap_obj_name][dn] = unicode(_dn_err_msg) 

                    continue 

                ava = dn[0][0] 

                if ava.attr == ldap_obj.primary_key.name: 

                    # In case if pkey attribute is in the migrated object DN 

                    # and the original LDAP is multivalued, make sure that 

                    # we pick the correct value (the unique one stored in DN) 

                    pkey = ava.value.lower() 

                else: 

                    pkey = entry_attrs[ldap_obj.primary_key.name][0].lower() 

                if pkey in exclude: 

                    continue 

                dn = ldap_obj.get_dn(pkey) 

                assert isinstance(dn, DN) 

                entry_attrs['objectclass'] = list( 

                    set( 

                        config.get( 

                            ldap_obj.object_class_config, ldap_obj.object_class 

                        ) + [o.lower() for o in entry_attrs['objectclass']] 

                    ) 

                ) 

                entry_attrs[ldap_obj.primary_key.name][0] = entry_attrs[ldap_obj.primary_key.name][0].lower() 

                callback = self.migrate_objects[ldap_obj_name]['pre_callback'] 

                if callable(callback): 

                    try: 

                        dn = callback( 

                            ldap, pkey, dn, entry_attrs, failed[ldap_obj_name], 

                            config, context, schema = options['schema'], 

                            search_bases = search_bases, 

                            valid_gids = valid_gids, 

                            **blacklists 

                        ) 

                        assert isinstance(dn, DN) 

                        if not dn: 

                            continue 

                    except errors.NotFound, e: 

                        failed[ldap_obj_name][pkey] = unicode(e.reason) 

                        continue 

                try: 

                    ldap.add_entry(dn, entry_attrs) 

                except errors.ExecutionError, e: 

                    callback = self.migrate_objects[ldap_obj_name]['exc_callback'] 

                    if callable(callback): 

                        try: 

                            callback(ldap, dn, entry_attrs, e, options) 

                        except errors.ExecutionError, e: 

                            failed[ldap_obj_name][pkey] = unicode(e) 

                            continue 

                    else: 

                        failed[ldap_obj_name][pkey] = unicode(e) 

                        continue 

                migrated[ldap_obj_name].append(pkey) 

                callback = self.migrate_objects[ldap_obj_name]['post_callback'] 

                if callable(callback): 

                    callback( 

                        ldap, pkey, dn, entry_attrs, failed[ldap_obj_name], 

                        config, context, 

                    ) 

        return (migrated, failed) 

    def execute(self, ldapuri, bindpw, **options): 

        ldap = self.api.Backend.ldap2 

        self.normalize_options(options) 

        config = ldap.get_ipa_config()[1] 

        ds_base_dn = options.get('basedn') 

        if ds_base_dn is not None: 

            assert isinstance(ds_base_dn, DN) 

        # check if migration mode is enabled 

        if config.get('ipamigrationenabled', ('FALSE', ))[0] == 'FALSE': 

            return dict(result={}, failed={}, enabled=False, compat=True) 

        # connect to DS 

        ds_ldap = ldap2(shared_instance=False, ldap_uri=ldapuri, base_dn='') 

        ds_ldap.connect(bind_dn=options['binddn'], bind_pw=bindpw) 

        #check whether the compat plugin is enabled 

        if not options.get('compat'): 

            try: 

                (dn,check_compat) = ldap.get_entry(_compat_dn, normalize=False) 

                assert isinstance(dn, DN) 

                if check_compat is not None and \ 

                        check_compat.get('nsslapd-pluginenabled', [''])[0].lower() == 'on': 

                    return dict(result={}, failed={}, enabled=True, compat=False) 

            except errors.NotFound: 

                pass 

        if not ds_base_dn: 

            # retrieve base DN from remote LDAP server 

            (entries, truncated) = ds_ldap.find_entries( 

                '', ['namingcontexts', 'defaultnamingcontext'], DN(''), 

                _ldap.SCOPE_BASE, size_limit=-1, time_limit=0, 

            ) 

            if 'defaultnamingcontext' in entries[0][1]: 

                ds_base_dn = DN(entries[0][1]['defaultnamingcontext'][0]) 

                assert isinstance(ds_base_dn, DN) 

            else: 

                try: 

                    ds_base_dn = DN(entries[0][1]['namingcontexts'][0]) 

                    assert isinstance(ds_base_dn, DN) 

                except (IndexError, KeyError), e: 

                    raise StandardError(str(e)) 

        # migrate! 

        (migrated, failed) = self.migrate( 

            ldap, config, ds_ldap, ds_base_dn, options 

        ) 

        return dict(result=migrated, failed=failed, enabled=True, compat=True) 

    def output_for_cli(self, textui, result, ldapuri, bindpw, **options): 

        textui.print_name(self.name) 

        if not result['enabled']: 

            textui.print_plain(self.migration_disabled_msg) 

            return 1 

        if not result['compat']: 

            textui.print_plain("The compat plug-in is enabled. This can increase the memory requirements during migration. Disable the compat plug-in with \'ipa-compat-manage disable\' or re-run this script with \'--with-compat\' option.") 

            return 1 

        textui.print_plain('Migrated:') 

        textui.print_entry1( 

            result['result'], attr_order=self.migrate_order, 

            one_value_per_line=False 

        ) 

        for ldap_obj_name in self.migrate_order: 

            textui.print_plain('Failed %s:' % ldap_obj_name) 

            textui.print_entry1( 

                result['failed'][ldap_obj_name], attr_order=self.migrate_order, 

                one_value_per_line=True, 

            ) 

        textui.print_plain('-' * len(self.name)) 

        textui.print_plain(unicode(self.pwd_migration_msg)) 

api.register(migrate_ds)