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freeipa/ipaserver/install/ldapupdate.py
Armando Neto b4ad0d19a2 Fix pylint 2.0 return-related violations 
Aiming to support pylint 2.0 some functions and methods must have their
return statements updated in order to fix two new violations:

- `useless-return` (R1711):
  Useless return at end of function or method Emitted when a single
  "return" or "return None" statement is found at the end of function
  or method definition. This statement can safely be removed because
  Python will implicitly return None

- `inconsistent-return-statements` (R1710):
  Either all return statements in a function should return an
  expression, or none of them should. According to PEP8, if any return
  statement returns an expression, any return statements where no value
  is returned should explicitly state this as return None, and an
  explicit return statement should be present at the end of the
  function (if reachable)

Issue: https://pagure.io/freeipa/issue/7614

Signed-off-by: Armando Neto <abiagion@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>
2018-07-11 10:11:38 +02:00

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# Authors: Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2008 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/>.
#
# Documentation can be found at http://freeipa.org/page/LdapUpdate
# TODO
# save undo files?
from __future__ import absolute_import
import base64
import logging
import sys
import uuid
import time
import os
import pwd
import fnmatch
import ldap
import six
from ipaserver.install import installutils
from ipapython import ipautil, ipaldap
from ipalib import errors
from ipalib import api, create_api
from ipalib import constants
from ipaplatform.paths import paths
from ipapython.dn import DN
if six.PY3:
unicode = str
logger = logging.getLogger(__name__)
UPDATES_DIR=paths.UPDATES_DIR
UPDATE_SEARCH_TIME_LIMIT = 30 # seconds
def connect(ldapi=False, realm=None, fqdn=None, dm_password=None):
"""Create a connection for updates"""
ldap_uri = ipaldap.get_ldap_uri(fqdn, ldapi=ldapi, realm=realm)
conn = ipaldap.LDAPClient(ldap_uri, decode_attrs=False)
try:
if dm_password:
conn.simple_bind(bind_dn=ipaldap.DIRMAN_DN,
bind_password=dm_password)
elif os.getegid() == 0:
try:
# autobind
conn.external_bind()
except errors.NotFound:
# Fall back
conn.gssapi_bind()
else:
conn.gssapi_bind()
except (ldap.CONNECT_ERROR, ldap.SERVER_DOWN):
raise RuntimeError("Unable to connect to LDAP server %s" % fqdn)
except ldap.INVALID_CREDENTIALS:
raise RuntimeError(
"The password provided is incorrect for LDAP server %s" % fqdn)
except ldap.LOCAL_ERROR as e:
raise RuntimeError('%s' % e.args[0].get('info', '').strip())
return conn
class BadSyntax(installutils.ScriptError):
def __init__(self, value):
self.value = value
super(BadSyntax, self).__init__(
msg="LDAPUpdate: syntax error: \n %s" % value, rval=1)
def __str__(self):
return repr(self.value)
def safe_output(attr, values):
"""
Sanitizes values we do not want logged, like passwords.
This should be called in all debug statements that output values.
This list does not necessarily need to be exhaustive given the limited
scope of types of values that the updater manages.
This only supports lists, tuples and strings. If you pass a dict you may
get a string back.
"""
sensitive_attributes = ['krbmkey', 'userpassword', 'passwordhistory', 'krbprincipalkey', 'sambalmpassword', 'sambantpassword', 'ipanthash']
if attr.lower() in sensitive_attributes:
if type(values) in (tuple, list):
# try to still look a little like what is in LDAP
return ['XXXXXXX'] * len(values)
else:
return 'XXXXXXXX'
if values is None:
return None
is_list = type(values) in (tuple, list)
if is_list and None in values:
return values
if not is_list:
values = [values]
try:
values = [v.decode('ascii') for v in values]
except UnicodeDecodeError:
try:
values = [base64.b64encode(v).decode('ascii') for v in values]
except TypeError:
pass
if not is_list:
values = values[0]
return values
class LDAPUpdate(object):
action_keywords = ["default", "add", "remove", "only", "onlyifexist", "deleteentry", "replace", "addifnew", "addifexist"]
def __init__(self, dm_password=None, sub_dict={},
online=True, ldapi=False):
'''
:parameters:
dm_password
Directory Manager password
sub_dict
substitution dictionary
online
Do an online LDAP update or use an experimental LDIF updater
ldapi
Bind using ldapi. This assumes autobind is enabled.
Data Structure Example:
-----------------------
dn_by_rdn_count = {
3: 'cn=config,dc=example,dc=com':
4: 'cn=bob,ou=people,dc=example,dc=com',
}
all_updates = [
{
'dn': 'cn=config,dc=example,dc=com',
'default': [
dict(attr='attr1', value='default1'),
],
'updates': [
dict(action='action', attr='attr1', value='value1'),
dict(action='replace', attr='attr2', value=['old', 'new']),
]
},
{
'dn': 'cn=bob,ou=people,dc=example,dc=com',
'default': [
dict(attr='attr3', value='default3'),
],
'updates': [
dict(action='action', attr='attr3', value='value3'),
dict(action='action', attr='attr4', value='value4'),
}
}
]
Please notice the replace action requires two values in list
The default and update lists are "dispositions"
Plugins:
Plugins has to be specified in update file to be executed, using
'plugin' directive
Example:
plugin: update_uniqueness_plugins_to_new_syntax
Each plugin returns two values:
1. restart: dirsrv will be restarted AFTER this update is
applied.
2. updates: A list of updates to be applied.
The value of an update is a dictionary with the following possible
values:
- dn: DN, equal to the dn attribute
- updates: list of updates against the dn
- default: list of the default entry to be added if it doesn't
exist
- deleteentry: list of dn's to be deleted (typically single dn)
For example, this update file:
dn: cn=global_policy,cn=$REALM,cn=kerberos,$SUFFIX
replace:krbPwdLockoutDuration:10::600
replace: krbPwdMaxFailure:3::6
Generates this list which contain the update dictionary:
[
{
'dn': 'cn=global_policy,cn=EXAMPLE.COM,cn=kerberos,dc=example,dc=com',
'updates': [
dict(action='replace', attr='krbPwdLockoutDuration',
value=['10','600']),
dict(action='replace', attr='krbPwdMaxFailure',
value=['3','6']),
]
}
]
Here is another example showing how a default entry is configured:
dn: cn=Managed Entries,cn=etc,$SUFFIX
default: objectClass: nsContainer
default: objectClass: top
default: cn: Managed Entries
This generates:
[
{
'dn': 'cn=Managed Entries,cn=etc,dc=example,dc=com',
'default': [
dict(attr='objectClass', value='nsContainer'),
dict(attr='objectClass', value='top'),
dict(attr='cn', value='Managed Entries'),
]
}
]
Note that the variable substitution in both examples has been completed.
Either may make changes directly in LDAP or can return updates in
update format.
'''
self.sub_dict = sub_dict
self.dm_password = dm_password
self.conn = None
self.modified = False
self.online = online
self.ldapi = ldapi
self.pw_name = pwd.getpwuid(os.geteuid()).pw_name
self.realm = None
self.socket_name = (
paths.SLAPD_INSTANCE_SOCKET_TEMPLATE %
api.env.realm.replace('.', '-')
)
suffix = None
if sub_dict.get("REALM"):
self.realm = sub_dict["REALM"]
else:
self.realm = api.env.realm
suffix = ipautil.realm_to_suffix(self.realm) if self.realm else None
self.ldapuri = installutils.realm_to_ldapi_uri(self.realm)
if suffix is not None:
assert isinstance(suffix, DN)
fqdn = installutils.get_fqdn()
if fqdn is None:
raise RuntimeError("Unable to determine hostname")
if not self.sub_dict.get("REALM") and self.realm is not None:
self.sub_dict["REALM"] = self.realm
if not self.sub_dict.get("FQDN"):
self.sub_dict["FQDN"] = fqdn
if not self.sub_dict.get("DOMAIN"):
self.sub_dict["DOMAIN"] = api.env.domain
if not self.sub_dict.get("SUFFIX") and suffix is not None:
self.sub_dict["SUFFIX"] = suffix
if not self.sub_dict.get("ESCAPED_SUFFIX"):
self.sub_dict["ESCAPED_SUFFIX"] = str(suffix)
if not self.sub_dict.get("LIBARCH"):
self.sub_dict["LIBARCH"] = paths.LIBARCH
if not self.sub_dict.get("TIME"):
self.sub_dict["TIME"] = int(time.time())
if not self.sub_dict.get("MIN_DOMAIN_LEVEL"):
self.sub_dict["MIN_DOMAIN_LEVEL"] = str(constants.MIN_DOMAIN_LEVEL)
if not self.sub_dict.get("MAX_DOMAIN_LEVEL"):
self.sub_dict["MAX_DOMAIN_LEVEL"] = str(constants.MAX_DOMAIN_LEVEL)
if not self.sub_dict.get("STRIP_ATTRS"):
self.sub_dict["STRIP_ATTRS"] = "%s" % (
" ".join(constants.REPL_AGMT_STRIP_ATTRS),)
if not self.sub_dict.get("EXCLUDES"):
self.sub_dict["EXCLUDES"] = "(objectclass=*) $ EXCLUDE %s" % (
" ".join(constants.REPL_AGMT_EXCLUDES),)
if not self.sub_dict.get("TOTAL_EXCLUDES"):
self.sub_dict["TOTAL_EXCLUDES"] = "(objectclass=*) $ EXCLUDE " + \
" ".join(constants.REPL_AGMT_TOTAL_EXCLUDES)
self.api = create_api(mode=None)
self.api.bootstrap(in_server=True,
context='updates',
confdir=paths.ETC_IPA,
ldap_uri=self.ldapuri)
self.api.finalize()
if online:
# Try out the connection/password
# (This will raise if the server is not available)
self.create_connection()
self.close_connection()
else:
raise RuntimeError("Offline updates are not supported.")
def _template_str(self, s):
try:
return ipautil.template_str(s, self.sub_dict)
except KeyError as e:
raise BadSyntax("Unknown template keyword %s" % e)
def read_file(self, filename):
if filename == '-':
fd = sys.stdin
else:
fd = open(filename)
text = fd.readlines()
if fd != sys.stdin: fd.close()
return text
def parse_update_file(self, data_source_name, source_data, all_updates):
"""Parse the update file into a dictonary of lists and apply the update
for each DN in the file."""
update = {}
logical_line = ""
dn = None
lcount = 0
def emit_item(logical_line):
'''
Given a logical line containing an item to process perform the following:
* Strip leading & trailing whitespace
* Substitute any variables
* Get the action, attribute, and value
* Each update has one list per disposition, append to specified disposition list
'''
logical_line = logical_line.strip()
if logical_line == '':
return
# Perform variable substitution on constructued line
logical_line = self._template_str(logical_line)
items = logical_line.split(':', 2)
if len(items) == 0:
raise BadSyntax("Bad formatting on line %s:%d: %s" % (data_source_name, lcount, logical_line))
action = items[0].strip().lower()
if action not in self.action_keywords:
raise BadSyntax("Unknown update action '%s', data source=%s" % (action, data_source_name))
if action == 'deleteentry':
new_value = None
disposition = "deleteentry"
else:
if len(items) != 3:
raise BadSyntax("Bad formatting on line %s:%d: %s" % (data_source_name, lcount, logical_line))
attr = items[1].strip()
# do not strip here, we need detect '::' due to base64 encoded
# values, strip may result into fake detection
value = items[2]
# detect base64 encoding
# value which start with ':' are base64 encoded
# decode it as a binary value
if value.startswith(':'):
value = value[1:]
binary = True
else:
binary = False
value = value.strip()
if action == 'replace':
try:
value = value.split('::', 1)
except ValueError:
raise BadSyntax(
"Bad syntax in replace on line %s:%d: %s, needs to "
"be in the format old::new in %s" % (
data_source_name, lcount, logical_line, value)
)
else:
value = [value]
if binary:
for i, v in enumerate(value):
try:
value[i] = base64.b64decode(v)
except (TypeError, ValueError) as e:
raise BadSyntax(
"Base64 encoded value %s on line %s:%d: %s is "
"incorrect (%s)" % (v, data_source_name,
lcount, logical_line, e)
)
else:
for i, v in enumerate(value):
if isinstance(v, unicode):
value[i] = v.encode('utf-8')
if action != 'replace':
value = value[0]
if action == "default":
new_value = {'attr': attr, 'value': value}
disposition = "default"
else:
new_value = {'action': action, "attr": attr,
'value': value}
disposition = "updates"
disposition_list = update.setdefault(disposition, [])
disposition_list.append(new_value)
def emit_update(update):
'''
When processing a dn is completed emit the update by appending it
into list of all updates
'''
dn = update.get('dn')
assert isinstance(dn, DN)
all_updates.append(update)
def emit_plugin_update(update):
'''
When processing a plugin is complete emit the plugin update by
appending it into list of all updates
'''
all_updates.append(update)
# Iterate over source input lines
for source_line in source_data:
lcount += 1
# strip trailing whitespace and newline
source_line = source_line.rstrip()
# skip comments and empty lines
if source_line.startswith('#') or source_line == '':
continue
state = None
emit_previous_dn = False
# parse special keywords
if source_line.lower().startswith('dn:'):
state = 'dn'
emit_previous_dn = True
elif source_line.lower().startswith('plugin:'):
state = 'plugin'
emit_previous_dn = True
if emit_previous_dn and dn is not None:
# Emit previous dn
emit_item(logical_line)
logical_line = ''
emit_update(update)
update = {}
dn = None
if state == 'dn':
# Starting new dn
dn = source_line[3:].strip()
dn = DN(self._template_str(dn))
update['dn'] = dn
elif state == 'plugin':
# plugin specification is online only
plugin_name = source_line[7:].strip()
if not plugin_name:
raise BadSyntax("plugin name is not defined")
update['plugin'] = plugin_name
emit_plugin_update(update)
update = {}
else:
# Process items belonging to dn
if dn is None:
raise BadSyntax("dn is not defined in the update, data source=%s" % (data_source_name))
# If continuation line, append to existing logical line & continue,
# otherwise flush the previous item.
if source_line.startswith(' '):
logical_line += source_line[1:]
continue
else:
emit_item(logical_line)
logical_line = source_line
if dn is not None:
emit_item(logical_line)
logical_line = ''
emit_update(update)
update = {}
return all_updates
def create_index_task(self, attribute):
"""Create a task to update an index for an attribute"""
# Sleep a bit to ensure previous operations are complete
time.sleep(5)
cn_uuid = uuid.uuid1()
# cn_uuid.time is in nanoseconds, but other users of LDAPUpdate expect
# seconds in 'TIME' so scale the value down
self.sub_dict['TIME'] = int(cn_uuid.time/1e9)
cn = "indextask_%s_%s_%s" % (attribute, cn_uuid.time, cn_uuid.clock_seq)
dn = DN(('cn', cn), ('cn', 'index'), ('cn', 'tasks'), ('cn', 'config'))
e = self.conn.make_entry(
dn,
objectClass=['top', 'extensibleObject'],
cn=[cn],
nsInstance=['userRoot'],
nsIndexAttribute=[attribute],
)
logger.debug("Creating task to index attribute: %s", attribute)
logger.debug("Task id: %s", dn)
self.conn.add_entry(e)
return dn
def monitor_index_task(self, dn):
"""Give a task DN monitor it and wait until it has completed (or failed)
"""
assert isinstance(dn, DN)
# Pause for a moment to give the task time to be created
time.sleep(1)
attrlist = ['nstaskstatus', 'nstaskexitcode']
entry = None
while True:
try:
entry = self.conn.get_entry(dn, attrlist)
except errors.NotFound as e:
logger.error("Task not found: %s", dn)
return
except errors.DatabaseError as e:
logger.error("Task lookup failure %s", e)
return
status = entry.single_value.get('nstaskstatus')
if status is None:
# task doesn't have a status yet
time.sleep(1)
continue
if status.lower().find("finished") > -1:
logger.debug("Indexing finished")
break
logger.debug("Indexing in progress")
time.sleep(1)
return
def _create_default_entry(self, dn, default):
"""Create the default entry from the values provided.
The return type is ipaldap.LDAPEntry
"""
assert isinstance(dn, DN)
entry = self.conn.make_entry(dn)
if not default:
# This means that the entire entry needs to be created with add
return entry
for item in default:
# We already do syntax-parsing so this is safe
attr = item['attr']
value = item['value']
e = entry.raw.get(attr)
if e:
# multi-valued attribute
e = list(e)
e.append(value)
else:
e = [value]
entry.raw[attr] = e
entry.reset_modlist()
return entry
def _get_entry(self, dn):
"""Retrieve an object from LDAP.
The return type is ipaldap.LDAPEntry
"""
assert isinstance(dn, DN)
searchfilter="objectclass=*"
sattrs = ["*", "aci", "attributeTypes", "objectClasses"]
scope = ldap.SCOPE_BASE
return self.conn.get_entries(dn, scope, searchfilter, sattrs)
def _apply_update_disposition(self, updates, entry):
"""
updates is a list of changes to apply
entry is the thing to apply them to
Returns the modified entry
"""
if not updates:
return entry
only = {}
for update in updates:
# We already do syntax-parsing so this is safe
action = update['action']
attr = update['attr']
update_value = update['value']
# do not mix comparison of bytes and unicode, everything in this
# function should be compared as bytes
if isinstance(update_value, (list, tuple)):
update_value = [
v.encode('utf-8') if isinstance(v, unicode) else v
for v in update_value
]
elif isinstance(update_value, unicode):
update_value = update_value.encode('utf-8')
entry_values = entry.raw.get(attr, [])
if action == 'remove':
logger.debug("remove: '%s' from %s, current value %s",
safe_output(attr, update_value),
attr,
safe_output(attr, entry_values))
try:
entry_values.remove(update_value)
except ValueError:
logger.debug(
"remove: '%s' not in %s",
safe_output(attr, update_value), attr)
else:
entry.raw[attr] = entry_values
logger.debug('remove: updated value %s', safe_output(
attr, entry_values))
elif action == 'add':
logger.debug("add: '%s' to %s, current value %s",
safe_output(attr, update_value),
attr,
safe_output(attr, entry_values))
# Remove it, ignoring errors so we can blindly add it later
try:
entry_values.remove(update_value)
except ValueError:
pass
entry_values.append(update_value)
logger.debug('add: updated value %s',
safe_output(attr, entry_values))
entry.raw[attr] = entry_values
elif action == 'addifnew':
logger.debug("addifnew: '%s' to %s, current value %s",
safe_output(attr, update_value),
attr,
safe_output(attr, entry_values))
# Only add the attribute if it doesn't exist. Only works
# with single-value attributes. Entry must exist.
if entry.get('objectclass') and len(entry_values) == 0:
entry_values.append(update_value)
logger.debug('addifnew: set %s to %s',
attr, safe_output(attr, entry_values))
entry.raw[attr] = entry_values
elif action == 'addifexist':
logger.debug("addifexist: '%s' to %s, current value %s",
safe_output(attr, update_value),
attr,
safe_output(attr, entry_values))
# Only add the attribute if the entry doesn't exist. We
# determine this based on whether it has an objectclass
if entry.get('objectclass'):
entry_values.append(update_value)
logger.debug('addifexist: set %s to %s',
attr, safe_output(attr, entry_values))
entry.raw[attr] = entry_values
elif action == 'only':
logger.debug("only: set %s to '%s', current value %s",
attr,
safe_output(attr, update_value),
safe_output(attr, entry_values))
if only.get(attr):
entry_values.append(update_value)
else:
entry_values = [update_value]
only[attr] = True
entry.raw[attr] = entry_values
logger.debug('only: updated value %s',
safe_output(attr, entry_values))
elif action == 'onlyifexist':
logger.debug("onlyifexist: '%s' to %s, current value %s",
safe_output(attr, update_value),
attr,
safe_output(attr, entry_values))
# Only set the attribute if the entry exist's. We
# determine this based on whether it has an objectclass
if entry.get('objectclass'):
if only.get(attr):
entry_values.append(update_value)
else:
entry_values = [update_value]
only[attr] = True
logger.debug('onlyifexist: set %s to %s',
attr, safe_output(attr, entry_values))
entry.raw[attr] = entry_values
elif action == 'deleteentry':
# skip this update type, it occurs in __delete_entries()
return None
elif action == 'replace':
# replace values were store as list
old, new = update_value
try:
entry_values.remove(old)
except ValueError:
logger.debug('replace: %s not found, skipping',
safe_output(attr, old))
else:
entry_values.append(new)
logger.debug('replace: updated value %s',
safe_output(attr, entry_values))
entry.raw[attr] = entry_values
return entry
def print_entity(self, e, message=None):
"""The entity object currently lacks a str() method"""
logger.debug("---------------------------------------------")
if message:
logger.debug("%s", message)
logger.debug("dn: %s", e.dn)
for a, value in e.raw.items():
logger.debug('%s:', a)
for l in value:
logger.debug("\t%s", safe_output(a, l))
def _update_record(self, update):
found = False
new_entry = self._create_default_entry(update.get('dn'),
update.get('default'))
try:
e = self._get_entry(new_entry.dn)
if len(e) > 1:
# we should only ever get back one entry
raise BadSyntax("More than 1 entry returned on a dn search!? %s" % new_entry.dn)
entry = e[0]
found = True
logger.debug("Updating existing entry: %s", entry.dn)
except errors.NotFound:
# Doesn't exist, start with the default entry
entry = new_entry
logger.debug("New entry: %s", entry.dn)
except errors.DatabaseError:
# Doesn't exist, start with the default entry
entry = new_entry
logger.debug("New entry, using default value: %s", entry.dn)
self.print_entity(entry, "Initial value")
# Bring this entry up to date
entry = self._apply_update_disposition(update.get('updates'), entry)
if entry is None:
# It might be None if it is just deleting an entry
return
self.print_entity(entry, "Final value after applying updates")
added = False
updated = False
if not found:
try:
if len(entry):
# addifexist may result in an entry with only a
# dn defined. In that case there is nothing to do.
# It means the entry doesn't exist, so skip it.
try:
self.conn.add_entry(entry)
except errors.NotFound:
# parent entry of the added entry does not exist
# this may not be an error (e.g. entries in NIS container)
logger.error("Parent DN of %s may not exist, cannot "
"create the entry", entry.dn)
return
added = True
self.modified = True
except Exception as e:
logger.error("Add failure %s", e)
else:
# Update LDAP
try:
changes = entry.generate_modlist()
if len(changes) >= 1:
updated = True
safe_changes = []
for (type, attr, values) in changes:
safe_changes.append((type, attr, safe_output(attr, values)))
logger.debug("%s", safe_changes)
logger.debug("Updated %d", updated)
if updated:
self.conn.update_entry(entry)
logger.debug("Done")
except errors.EmptyModlist:
logger.debug("Entry already up-to-date")
updated = False
except errors.DatabaseError as e:
logger.error("Update failed: %s", e)
updated = False
except errors.DuplicateEntry as e:
logger.debug("Update already exists, skip it: %s", e)
updated = False
except errors.ACIError as e:
logger.error("Update failed: %s", e)
updated = False
if updated:
self.modified = True
if entry.dn.endswith(DN(('cn', 'index'), ('cn', 'userRoot'),
('cn', 'ldbm database'), ('cn', 'plugins'),
('cn', 'config'))) and (added or updated):
taskid = self.create_index_task(entry.single_value['cn'])
self.monitor_index_task(taskid)
return
def _delete_record(self, updates):
"""
Delete record
"""
dn = updates['dn']
try:
logger.debug("Deleting entry %s", dn)
self.conn.delete_entry(dn)
self.modified = True
except errors.NotFound as e:
logger.debug("%s did not exist:%s", dn, e)
self.modified = True
except errors.DatabaseError as e:
logger.error("Delete failed: %s", e)
def get_all_files(self, root, recursive=False):
"""Get all update files"""
f = []
for path, _subdirs, files in os.walk(root):
for name in files:
if fnmatch.fnmatch(name, "*.update"):
f.append(os.path.join(path, name))
if not recursive:
break
f.sort()
return f
def _run_update_plugin(self, plugin_name):
logger.debug("Executing upgrade plugin: %s", plugin_name)
restart_ds, updates = self.api.Updater[plugin_name]()
if updates:
self._run_updates(updates)
# restart may be required even if no updates were returned
# from plugin, plugin may change LDAP data directly
if restart_ds:
self.close_connection()
self.restart_ds()
self.create_connection()
def create_connection(self):
if self.online:
self.api.Backend.ldap2.connect(
time_limit=UPDATE_SEARCH_TIME_LIMIT,
size_limit=0)
self.conn = self.api.Backend.ldap2
else:
raise RuntimeError("Offline updates are not supported.")
def _run_updates(self, all_updates):
for update in all_updates:
if 'deleteentry' in update:
self._delete_record(update)
elif 'plugin' in update:
self._run_update_plugin(update['plugin'])
else:
self._update_record(update)
def update(self, files, ordered=True):
"""Execute the update. files is a list of the update files to use.
:param ordered: Update files are executed in alphabetical order
returns True if anything was changed, otherwise False
"""
self.modified = False
try:
self.create_connection()
upgrade_files = files
if ordered:
upgrade_files = sorted(files)
for f in upgrade_files:
start = time.time()
try:
logger.debug("Parsing update file '%s'", f)
data = self.read_file(f)
except Exception as e:
logger.error("error reading update file '%s'", f)
raise RuntimeError(e)
all_updates = []
self.parse_update_file(f, data, all_updates)
self._run_updates(all_updates)
dur = time.time() - start
logger.debug(
"LDAP update duration: %s %.03f sec", f, dur,
extra={'timing': ('ldapupdate', f, None, dur)}
)
finally:
self.close_connection()
return self.modified
def close_connection(self):
"""Close ldap connection"""
if self.conn:
self.api.Backend.ldap2.disconnect()
self.conn = None
def restart_ds(self):
logger.debug('Restarting directory server to apply updates')
installutils.restart_dirsrv()
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