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s4:provision Split ProvisionBackend out of the main provision script

Browse Source 
This splits the code, while keeping the original behaviour.  The
provision.py file had become just too long.

Andrew Bartlett
This commit is contained in:
Andrew Bartlett
2009-10-30 15:18:42 +11:00
parent aa37db5a12
commit 6439bdeb3a
3 changed files with 631 additions and 590 deletions
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16
source4/scripting/python/samba/__init__.py
View File

@ -336,6 +336,22 @@ def read_and_sub_file(file, subst_vars):
return data
def setup_file(template, fname, subst_vars=None):
"""Setup a file in the private dir.
:param template: Path of the template file.
:param fname: Path of the file to create.
:param subst_vars: Substitution variables.
"""
f = fname
if os.path.exists(f):
os.unlink(f)
data = read_and_sub_file(template, subst_vars)
open(f, 'w').write(data)
def valid_netbios_name(name):
"""Check whether a name is valid as a NetBIOS name. """
# See crh's book (1.4.1.1)

594
source4/scripting/python/samba/provision.py
View File

@ -40,9 +40,9 @@ import subprocess
import ldb
import shutil
from credentials import Credentials, DONT_USE_KERBEROS
from auth import system_session, admin_session
from samba import version, Ldb, substitute_var, valid_netbios_name
from samba import version, Ldb, substitute_var, valid_netbios_name, setup_file
from samba import check_all_substituted, read_and_sub_file
from samba import DS_DOMAIN_FUNCTION_2003, DS_DOMAIN_FUNCTION_2008, DS_DC_FUNCTION_2008
from samba.samdb import SamDB
@ -50,9 +50,10 @@ from samba.idmap import IDmapDB
from samba.dcerpc import security
from samba.ndr import ndr_pack
import urllib
from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE, LdbError, timestring
from ldb import SCOPE_SUBTREE, SCOPE_ONELEVEL, SCOPE_BASE, LdbError
from ms_display_specifiers import read_ms_ldif
from schema import Schema
from provisionbackend import ProvisionBackend
from signal import SIGTERM
from dcerpc.misc import SEC_CHAN_BDC, SEC_CHAN_WKSTA
@ -246,22 +247,6 @@ def setup_ldb(ldb, ldif_path, subst_vars):
ldb.transaction_commit()
def setup_file(template, fname, subst_vars=None):
"""Setup a file in the private dir.
:param template: Path of the template file.
:param fname: Path of the file to create.
:param subst_vars: Substitution variables.
"""
f = fname
if os.path.exists(f):
os.unlink(f)
data = read_and_sub_file(template, subst_vars)
open(f, 'w').write(data)
def provision_paths_from_lp(lp, dnsdomain):
"""Set the default paths for provisioning.
@ -1437,577 +1422,6 @@ def provision_become_dc(setup_dir=None,
sitename=sitename)
def setup_db_config(setup_path, dbdir):
"""Setup a Berkeley database.
:param setup_path: Setup path function.
:param dbdir: Database directory."""
if not os.path.isdir(os.path.join(dbdir, "bdb-logs")):
os.makedirs(os.path.join(dbdir, "bdb-logs"), 0700)
if not os.path.isdir(os.path.join(dbdir, "tmp")):
os.makedirs(os.path.join(dbdir, "tmp"), 0700)
setup_file(setup_path("DB_CONFIG"), os.path.join(dbdir, "DB_CONFIG"),
{"LDAPDBDIR": dbdir})
class ProvisionBackend(object):
def __init__(self, backend_type, paths=None, setup_path=None, lp=None, credentials=None,
names=None, message=None,
hostname=None, root=None,
schema=None, ldapadminpass=None,
ldap_backend_extra_port=None,
ol_mmr_urls=None,
setup_ds_path=None, slapd_path=None,
nosync=False, ldap_dryrun_mode=False,
domainsid=None):
"""Provision an LDAP backend for samba4
This works for OpenLDAP and Fedora DS
"""
self.paths = paths
self.slapd_command = None
self.slapd_command_escaped = None
self.type = backend_type
# Set a default - the code for "existing" below replaces this
self.ldap_backend_type = backend_type
self.post_setup = None
self.shutdown = None
if self.type is "ldb":
self.credentials = None
self.secrets_credentials = None
return
self.ldapi_uri = "ldapi://" + urllib.quote(os.path.join(paths.ldapdir, "ldapi"), safe="")
if self.type == "existing":
#Check to see that this 'existing' LDAP backend in fact exists
ldapi_db = Ldb(self.ldapi_uri, credentials=credentials)
search_ol_rootdse = ldapi_db.search(base="", scope=SCOPE_BASE,
expression="(objectClass=OpenLDAProotDSE)")
# If we have got here, then we must have a valid connection to the LDAP server, with valid credentials supplied
self.credentials = credentials
# This caused them to be set into the long-term database later in the script.
self.secrets_credentials = credentials
self.ldap_backend_type = "openldap" #For now, assume existing backends at least emulate OpenLDAP
return
# we will shortly start slapd with ldapi for final provisioning. first check with ldapsearch -> rootDSE via self.ldapi_uri
# if another instance of slapd is already running
try:
ldapi_db = Ldb(self.ldapi_uri)
search_ol_rootdse = ldapi_db.search(base="", scope=SCOPE_BASE,
expression="(objectClass=OpenLDAProotDSE)");
try:
f = open(paths.slapdpid, "r")
p = f.read()
f.close()
message("Check for slapd Process with PID: " + str(p) + " and terminate it manually.")
except:
pass
raise ProvisioningError("Warning: Another slapd Instance seems already running on this host, listening to " + self.ldapi_uri + ". Please shut it down before you continue. ")
except LdbError, e:
pass
# Try to print helpful messages when the user has not specified the path to slapd
if slapd_path is None:
raise ProvisioningError("Warning: LDAP-Backend must be setup with path to slapd, e.g. --slapd-path=\"/usr/local/libexec/slapd\"!")
if not os.path.exists(slapd_path):
message (slapd_path)
raise ProvisioningError("Warning: Given Path to slapd does not exist!")
if not os.path.isdir(paths.ldapdir):
os.makedirs(paths.ldapdir, 0700)
# Put the LDIF of the schema into a database so we can search on
# it to generate schema-dependent configurations in Fedora DS and
# OpenLDAP
schemadb_path = os.path.join(paths.ldapdir, "schema-tmp.ldb")
try:
os.unlink(schemadb_path)
except OSError:
pass
schema.write_to_tmp_ldb(schemadb_path);
self.credentials = Credentials()
self.credentials.guess(lp)
#Kerberos to an ldapi:// backend makes no sense
self.credentials.set_kerberos_state(DONT_USE_KERBEROS)
self.secrets_credentials = Credentials()
self.secrets_credentials.guess(lp)
#Kerberos to an ldapi:// backend makes no sense
self.secrets_credentials.set_kerberos_state(DONT_USE_KERBEROS)
def ldap_backend_shutdown(self):
# if an LDAP backend is in use, terminate slapd after final provision and check its proper termination
if self.slapd.poll() is None:
#Kill the slapd
if hasattr(self.slapd, "terminate"):
self.slapd.terminate()
else:
# Older python versions don't have .terminate()
import signal
os.kill(self.slapd.pid, signal.SIGTERM)
#and now wait for it to die
self.slapd.communicate()
self.shutdown = ldap_backend_shutdown
if self.type == "fedora-ds":
provision_fds_backend(self, setup_path=setup_path,
names=names, message=message,
hostname=hostname,
ldapadminpass=ldapadminpass, root=root,
schema=schema,
ldap_backend_extra_port=ldap_backend_extra_port,
setup_ds_path=setup_ds_path,
slapd_path=slapd_path,
nosync=nosync,
ldap_dryrun_mode=ldap_dryrun_mode,
domainsid=domainsid)
elif self.type == "openldap":
provision_openldap_backend(self, setup_path=setup_path,
names=names, message=message,
hostname=hostname,
ldapadminpass=ldapadminpass, root=root,
schema=schema,
ldap_backend_extra_port=ldap_backend_extra_port,
ol_mmr_urls=ol_mmr_urls,
slapd_path=slapd_path,
nosync=nosync,
ldap_dryrun_mode=ldap_dryrun_mode)
else:
raise ProvisioningError("Unknown LDAP backend type selected")
self.credentials.set_password(ldapadminpass)
self.secrets_credentials.set_username("samba-admin")
self.secrets_credentials.set_password(ldapadminpass)
self.slapd_command_escaped = "\'" + "\' \'".join(self.slapd_command) + "\'"
setup_file(setup_path("ldap_backend_startup.sh"), paths.ldapdir + "/ldap_backend_startup.sh", {
"SLAPD_COMMAND" : slapd_command})
# Now start the slapd, so we can provision onto it. We keep the
# subprocess context around, to kill this off at the successful
# end of the script
self.slapd = subprocess.Popen(self.slapd_provision_command, close_fds=True, shell=False)
while self.slapd.poll() is None:
# Wait until the socket appears
try:
ldapi_db = Ldb(self.ldapi_uri, lp=lp, credentials=self.credentials)
search_ol_rootdse = ldapi_db.search(base="", scope=SCOPE_BASE,
expression="(objectClass=OpenLDAProotDSE)")
# If we have got here, then we must have a valid connection to the LDAP server!
return
except LdbError, e:
time.sleep(1)
pass
raise ProvisioningError("slapd died before we could make a connection to it")
def provision_openldap_backend(result, setup_path=None, names=None,
message=None,
hostname=None, ldapadminpass=None, root=None,
schema=None,
ldap_backend_extra_port=None,
ol_mmr_urls=None,
slapd_path=None, nosync=False,
ldap_dryrun_mode=False):
#Allow the test scripts to turn off fsync() for OpenLDAP as for TDB and LDB
nosync_config = ""
if nosync:
nosync_config = "dbnosync"
lnkattr = schema.linked_attributes()
refint_attributes = ""
memberof_config = "# Generated from Samba4 schema\n"
for att in lnkattr.keys():
if lnkattr[att] is not None:
refint_attributes = refint_attributes + " " + att
memberof_config += read_and_sub_file(setup_path("memberof.conf"),
{ "MEMBER_ATTR" : att ,
"MEMBEROF_ATTR" : lnkattr[att] })
refint_config = read_and_sub_file(setup_path("refint.conf"),
{ "LINK_ATTRS" : refint_attributes})
attrs = ["linkID", "lDAPDisplayName"]
res = schema.ldb.search(expression="(&(objectclass=attributeSchema)(searchFlags:1.2.840.113556.1.4.803:=1))", base=names.schemadn, scope=SCOPE_ONELEVEL, attrs=attrs)
index_config = ""
for i in range (0, len(res)):
index_attr = res[i]["lDAPDisplayName"][0]
if index_attr == "objectGUID":
index_attr = "entryUUID"
index_config += "index " + index_attr + " eq\n"
# generate serverids, ldap-urls and syncrepl-blocks for mmr hosts
mmr_on_config = ""
mmr_replicator_acl = ""
mmr_serverids_config = ""
mmr_syncrepl_schema_config = ""
mmr_syncrepl_config_config = ""
mmr_syncrepl_user_config = ""
if ol_mmr_urls is not None:
# For now, make these equal
mmr_pass = ldapadminpass
url_list=filter(None,ol_mmr_urls.split(' '))
if (len(url_list) == 1):
url_list=filter(None,ol_mmr_urls.split(','))
mmr_on_config = "MirrorMode On"
mmr_replicator_acl = " by dn=cn=replicator,cn=samba read"
serverid=0
for url in url_list:
serverid=serverid+1
mmr_serverids_config += read_and_sub_file(setup_path("mmr_serverids.conf"),
{ "SERVERID" : str(serverid),
"LDAPSERVER" : url })
rid=serverid*10
rid=rid+1
mmr_syncrepl_schema_config += read_and_sub_file(setup_path("mmr_syncrepl.conf"),
{ "RID" : str(rid),
"MMRDN": names.schemadn,
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass})
rid=rid+1
mmr_syncrepl_config_config += read_and_sub_file(setup_path("mmr_syncrepl.conf"),
{ "RID" : str(rid),
"MMRDN": names.configdn,
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass})
rid=rid+1
mmr_syncrepl_user_config += read_and_sub_file(setup_path("mmr_syncrepl.conf"),
{ "RID" : str(rid),
"MMRDN": names.domaindn,
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass })
# OpenLDAP cn=config initialisation
olc_syncrepl_config = ""
olc_mmr_config = ""
# if mmr = yes, generate cn=config-replication directives
# and olc_seed.lif for the other mmr-servers
if ol_mmr_urls is not None:
serverid=0
olc_serverids_config = ""
olc_syncrepl_seed_config = ""
olc_mmr_config += read_and_sub_file(setup_path("olc_mmr.conf"),{})
rid=1000
for url in url_list:
serverid=serverid+1
olc_serverids_config += read_and_sub_file(setup_path("olc_serverid.conf"),
{ "SERVERID" : str(serverid),
"LDAPSERVER" : url })
rid=rid+1
olc_syncrepl_config += read_and_sub_file(setup_path("olc_syncrepl.conf"),
{ "RID" : str(rid),
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass})
olc_syncrepl_seed_config += read_and_sub_file(setup_path("olc_syncrepl_seed.conf"),
{ "RID" : str(rid),
"LDAPSERVER" : url})
setup_file(setup_path("olc_seed.ldif"), result.paths.olcseedldif,
{"OLC_SERVER_ID_CONF": olc_serverids_config,
"OLC_PW": ldapadminpass,
"OLC_SYNCREPL_CONF": olc_syncrepl_seed_config})
# end olc
setup_file(setup_path("slapd.conf"), result.paths.slapdconf,
{"DNSDOMAIN": names.dnsdomain,
"LDAPDIR": result.paths.ldapdir,
"DOMAINDN": names.domaindn,
"CONFIGDN": names.configdn,
"SCHEMADN": names.schemadn,
"MEMBEROF_CONFIG": memberof_config,
"MIRRORMODE": mmr_on_config,
"REPLICATOR_ACL": mmr_replicator_acl,
"MMR_SERVERIDS_CONFIG": mmr_serverids_config,
"MMR_SYNCREPL_SCHEMA_CONFIG": mmr_syncrepl_schema_config,
"MMR_SYNCREPL_CONFIG_CONFIG": mmr_syncrepl_config_config,
"MMR_SYNCREPL_USER_CONFIG": mmr_syncrepl_user_config,
"OLC_SYNCREPL_CONFIG": olc_syncrepl_config,
"OLC_MMR_CONFIG": olc_mmr_config,
"REFINT_CONFIG": refint_config,
"INDEX_CONFIG": index_config,
"NOSYNC": nosync_config})
setup_db_config(setup_path, os.path.join(result.paths.ldapdir, "db", "user"))
setup_db_config(setup_path, os.path.join(result.paths.ldapdir, "db", "config"))
setup_db_config(setup_path, os.path.join(result.paths.ldapdir, "db", "schema"))
if not os.path.exists(os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba")):
os.makedirs(os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba"), 0700)
setup_file(setup_path("cn=samba.ldif"),
os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba.ldif"),
{ "UUID": str(uuid.uuid4()),
"LDAPTIME": timestring(int(time.time()))} )
setup_file(setup_path("cn=samba-admin.ldif"),
os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba", "cn=samba-admin.ldif"),
{"LDAPADMINPASS_B64": b64encode(ldapadminpass),
"UUID": str(uuid.uuid4()),
"LDAPTIME": timestring(int(time.time()))} )
if ol_mmr_urls is not None:
setup_file(setup_path("cn=replicator.ldif"),
os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba", "cn=replicator.ldif"),
{"MMR_PASSWORD_B64": b64encode(mmr_pass),
"UUID": str(uuid.uuid4()),
"LDAPTIME": timestring(int(time.time()))} )
mapping = "schema-map-openldap-2.3"
backend_schema = "backend-schema.schema"
backend_schema_data = schema.ldb.convert_schema_to_openldap("openldap", open(setup_path(mapping), 'r').read())
assert backend_schema_data is not None
open(os.path.join(result.paths.ldapdir, backend_schema), 'w').write(backend_schema_data)
# now we generate the needed strings to start slapd automatically,
# first ldapi_uri...
if ldap_backend_extra_port is not None:
# When we use MMR, we can't use 0.0.0.0 as it uses the name
# specified there as part of it's clue as to it's own name,
# and not to replicate to itself
if ol_mmr_urls is None:
server_port_string = "ldap://0.0.0.0:%d" % ldap_backend_extra_port
else:
server_port_string = "ldap://" + names.hostname + "." + names.dnsdomain +":%d" % ldap_backend_extra_port
else:
server_port_string = ""
# Prepare the 'result' information - the commands to return in particular
result.slapd_provision_command = [slapd_path]
result.slapd_provision_command.append("-F" + result.paths.olcdir)
result.slapd_provision_command.append("-h")
# copy this command so we have two version, one with -d0 and only ldapi, and one with all the listen commands
result.slapd_command = list(result.slapd_provision_command)
result.slapd_provision_command.append(result.ldapi_uri)
result.slapd_provision_command.append("-d0")
uris = result.ldapi_uri
if server_port_string is not "":
uris = uris + " " + server_port_string
result.slapd_command.append(uris)
# Set the username - done here because Fedora DS still uses the admin DN and simple bind
result.credentials.set_username("samba-admin")
# If we were just looking for crashes up to this point, it's a
# good time to exit before we realise we don't have OpenLDAP on
# this system
if ldap_dryrun_mode:
sys.exit(0)
# Finally, convert the configuration into cn=config style!
if not os.path.isdir(result.paths.olcdir):
os.makedirs(result.paths.olcdir, 0770)
retcode = subprocess.call([slapd_path, "-Ttest", "-f", result.paths.slapdconf, "-F", result.paths.olcdir], close_fds=True, shell=False)
# We can't do this, as OpenLDAP is strange. It gives an error
# output to the above, but does the conversion sucessfully...
#
# if retcode != 0:
# raise ProvisioningError("conversion from slapd.conf to cn=config failed")
if not os.path.exists(os.path.join(result.paths.olcdir, "cn=config.ldif")):
raise ProvisioningError("conversion from slapd.conf to cn=config failed")
# Don't confuse the admin by leaving the slapd.conf around
os.remove(result.paths.slapdconf)
def provision_fds_backend(result, setup_path=None, names=None,
message=None,
hostname=None, ldapadminpass=None, root=None,
schema=None,
ldap_backend_extra_port=None,
setup_ds_path=None,
slapd_path=None,
nosync=False,
ldap_dryrun_mode=False,
domainsid=None):
if ldap_backend_extra_port is not None:
serverport = "ServerPort=%d" % ldap_backend_extra_port
else:
serverport = ""
setup_file(setup_path("fedorads.inf"), result.paths.fedoradsinf,
{"ROOT": root,
"HOSTNAME": hostname,
"DNSDOMAIN": names.dnsdomain,
"LDAPDIR": result.paths.ldapdir,
"DOMAINDN": names.domaindn,
"LDAPMANAGERDN": names.ldapmanagerdn,
"LDAPMANAGERPASS": ldapadminpass,
"SERVERPORT": serverport})
setup_file(setup_path("fedorads-partitions.ldif"), result.paths.fedoradspartitions,
{"CONFIGDN": names.configdn,
"SCHEMADN": names.schemadn,
"SAMBADN": names.sambadn,
})
setup_file(setup_path("fedorads-sasl.ldif"), result.paths.fedoradssasl,
{"SAMBADN": names.sambadn,
})
setup_file(setup_path("fedorads-dna.ldif"), result.paths.fedoradsdna,
{"DOMAINDN": names.domaindn,
"SAMBADN": names.sambadn,
"DOMAINSID": str(domainsid),
})
setup_file(setup_path("fedorads-pam.ldif"), result.paths.fedoradspam)
lnkattr = schema.linked_attributes()
refint_config = data = open(setup_path("fedorads-refint-delete.ldif"), 'r').read()
memberof_config = ""
index_config = ""
argnum = 3
for attr in lnkattr.keys():
if lnkattr[attr] is not None:
refint_config += read_and_sub_file(setup_path("fedorads-refint-add.ldif"),
{ "ARG_NUMBER" : str(argnum) ,
"LINK_ATTR" : attr })
memberof_config += read_and_sub_file(setup_path("fedorads-linked-attributes.ldif"),
{ "MEMBER_ATTR" : attr ,
"MEMBEROF_ATTR" : lnkattr[attr] })
index_config += read_and_sub_file(setup_path("fedorads-index.ldif"),
{ "ATTR" : attr })
argnum += 1
open(result.paths.fedoradsrefint, 'w').write(refint_config)
open(result.paths.fedoradslinkedattributes, 'w').write(memberof_config)
attrs = ["lDAPDisplayName"]
res = schema.ldb.search(expression="(&(objectclass=attributeSchema)(searchFlags:1.2.840.113556.1.4.803:=1))", base=names.schemadn, scope=SCOPE_ONELEVEL, attrs=attrs)
for i in range (0, len(res)):
attr = res[i]["lDAPDisplayName"][0]
if attr == "objectGUID":
attr = "nsUniqueId"
index_config += read_and_sub_file(setup_path("fedorads-index.ldif"),
{ "ATTR" : attr })
open(result.paths.fedoradsindex, 'w').write(index_config)
setup_file(setup_path("fedorads-samba.ldif"), result.paths.fedoradssamba,
{"SAMBADN": names.sambadn,
"LDAPADMINPASS": ldapadminpass
})
mapping = "schema-map-fedora-ds-1.0"
backend_schema = "99_ad.ldif"
# Build a schema file in Fedora DS format
backend_schema_data = schema.ldb.convert_schema_to_openldap("fedora-ds", open(setup_path(mapping), 'r').read())
assert backend_schema_data is not None
open(os.path.join(result.paths.ldapdir, backend_schema), 'w').write(backend_schema_data)
result.credentials.set_bind_dn(names.ldapmanagerdn)
# Destory the target directory, or else setup-ds.pl will complain
fedora_ds_dir = os.path.join(result.paths.ldapdir, "slapd-samba4")
shutil.rmtree(fedora_ds_dir, True)
result.slapd_provision_command = [slapd_path, "-D", fedora_ds_dir, "-i", result.paths.slapdpid];
#In the 'provision' command line, stay in the foreground so we can easily kill it
result.slapd_provision_command.append("-d0")
#the command for the final run is the normal script
result.slapd_command = [os.path.join(result.paths.ldapdir, "slapd-samba4", "start-slapd")]
# If we were just looking for crashes up to this point, it's a
# good time to exit before we realise we don't have Fedora DS on
if ldap_dryrun_mode:
sys.exit(0)
# Try to print helpful messages when the user has not specified the path to the setup-ds tool
if setup_ds_path is None:
raise ProvisioningError("Warning: Fedora DS LDAP-Backend must be setup with path to setup-ds, e.g. --setup-ds-path=\"/usr/sbin/setup-ds.pl\"!")
if not os.path.exists(setup_ds_path):
message (setup_ds_path)
raise ProvisioningError("Warning: Given Path to slapd does not exist!")
# Run the Fedora DS setup utility
retcode = subprocess.call([setup_ds_path, "--silent", "--file", result.paths.fedoradsinf], close_fds=True, shell=False)
if retcode != 0:
raise ProvisioningError("setup-ds failed")
# Load samba-admin
retcode = subprocess.call([
os.path.join(result.paths.ldapdir, "slapd-samba4", "ldif2db"), "-s", names.sambadn, "-i", result.paths.fedoradssamba],
close_fds=True, shell=False)
if retcode != 0:
raise("ldib2db failed")
# Leave a hook to do the 'post initilisation' setup
def fds_post_setup(self):
ldapi_db = Ldb(self.ldapi_uri, credentials=self.credentials)
# delete default SASL mappings
res = ldapi_db.search(expression="(!(cn=samba-admin mapping))", base="cn=mapping,cn=sasl,cn=config", scope=SCOPE_ONELEVEL, attrs=["dn"])
# configure in-directory access control on Fedora DS via the aci attribute (over a direct ldapi:// socket)
for i in range (0, len(res)):
dn = str(res[i]["dn"])
ldapi_db.delete(dn)
aci = """(targetattr = "*") (version 3.0;acl "full access to all by samba-admin";allow (all)(userdn = "ldap:///CN=samba-admin,%s");)""" % names.sambadn
m = ldb.Message()
m["aci"] = ldb.MessageElement([aci], ldb.FLAG_MOD_REPLACE, "aci")
m.dn = ldb.Dn(1, names.domaindn)
ldapi_db.modify(m)
m.dn = ldb.Dn(1, names.configdn)
ldapi_db.modify(m)
m.dn = ldb.Dn(1, names.schemadn)
ldapi_db.modify(m)
result.post_setup = fds_post_setup
def create_phpldapadmin_config(path, setup_path, ldapi_uri):
"""Create a PHP LDAP admin configuration file.

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#
# Unix SMB/CIFS implementation.
# backend code for provisioning a Samba4 server
# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008-2009
# Copyright (C) Oliver Liebel <oliver@itc.li> 2008-2009
#
# Based on the original in EJS:
# Copyright (C) Andrew Tridgell <tridge@samba.org> 2005
#
# 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/>.
#
"""Functions for setting up a Samba configuration (LDB and LDAP backends)."""
from base64 import b64encode
import os
import sys
import uuid
import time
from samba import read_and_sub_file
from samba import Ldb
import urllib
from ldb import SCOPE_BASE, SCOPE_ONELEVEL, LdbError, timestring
from credentials import Credentials, DONT_USE_KERBEROS
from samba import setup_file
def setup_db_config(setup_path, dbdir):
"""Setup a Berkeley database.
:param setup_path: Setup path function.
:param dbdir: Database directory."""
if not os.path.isdir(os.path.join(dbdir, "bdb-logs")):
os.makedirs(os.path.join(dbdir, "bdb-logs"), 0700)
if not os.path.isdir(os.path.join(dbdir, "tmp")):
os.makedirs(os.path.join(dbdir, "tmp"), 0700)
setup_file(setup_path("DB_CONFIG"), os.path.join(dbdir, "DB_CONFIG"),
{"LDAPDBDIR": dbdir})
class ProvisionBackend(object):
def __init__(self, backend_type, paths=None, setup_path=None, lp=None, credentials=None,
names=None, message=None,
hostname=None, root=None,
schema=None, ldapadminpass=None,
ldap_backend_extra_port=None,
ol_mmr_urls=None,
setup_ds_path=None, slapd_path=None,
nosync=False, ldap_dryrun_mode=False,
domainsid=None):
"""Provision an LDAP backend for samba4
This works for OpenLDAP and Fedora DS
"""
self.paths = paths
self.slapd_command = None
self.slapd_command_escaped = None
self.type = backend_type
# Set a default - the code for "existing" below replaces this
self.ldap_backend_type = backend_type
self.post_setup = None
self.shutdown = None
if self.type is "ldb":
self.credentials = None
self.secrets_credentials = None
return
self.ldapi_uri = "ldapi://" + urllib.quote(os.path.join(paths.ldapdir, "ldapi"), safe="")
if self.type == "existing":
#Check to see that this 'existing' LDAP backend in fact exists
ldapi_db = Ldb(self.ldapi_uri, credentials=credentials)
search_ol_rootdse = ldapi_db.search(base="", scope=SCOPE_BASE,
expression="(objectClass=OpenLDAProotDSE)")
# If we have got here, then we must have a valid connection to the LDAP server, with valid credentials supplied
self.credentials = credentials
# This caused them to be set into the long-term database later in the script.
self.secrets_credentials = credentials
self.ldap_backend_type = "openldap" #For now, assume existing backends at least emulate OpenLDAP
return
# we will shortly start slapd with ldapi for final provisioning. first check with ldapsearch -> rootDSE via self.ldapi_uri
# if another instance of slapd is already running
try:
ldapi_db = Ldb(self.ldapi_uri)
search_ol_rootdse = ldapi_db.search(base="", scope=SCOPE_BASE,
expression="(objectClass=OpenLDAProotDSE)");
try:
f = open(paths.slapdpid, "r")
p = f.read()
f.close()
message("Check for slapd Process with PID: " + str(p) + " and terminate it manually.")
except:
pass
raise ProvisioningError("Warning: Another slapd Instance seems already running on this host, listening to " + self.ldapi_uri + ". Please shut it down before you continue. ")
except LdbError, e:
pass
# Try to print helpful messages when the user has not specified the path to slapd
if slapd_path is None:
raise ProvisioningError("Warning: LDAP-Backend must be setup with path to slapd, e.g. --slapd-path=\"/usr/local/libexec/slapd\"!")
if not os.path.exists(slapd_path):
message (slapd_path)
raise ProvisioningError("Warning: Given Path to slapd does not exist!")
if not os.path.isdir(paths.ldapdir):
os.makedirs(paths.ldapdir, 0700)
# Put the LDIF of the schema into a database so we can search on
# it to generate schema-dependent configurations in Fedora DS and
# OpenLDAP
schemadb_path = os.path.join(paths.ldapdir, "schema-tmp.ldb")
try:
os.unlink(schemadb_path)
except OSError:
pass
schema.write_to_tmp_ldb(schemadb_path);
self.credentials = Credentials()
self.credentials.guess(lp)
#Kerberos to an ldapi:// backend makes no sense
self.credentials.set_kerberos_state(DONT_USE_KERBEROS)
self.secrets_credentials = Credentials()
self.secrets_credentials.guess(lp)
#Kerberos to an ldapi:// backend makes no sense
self.secrets_credentials.set_kerberos_state(DONT_USE_KERBEROS)
def ldap_backend_shutdown(self):
# if an LDAP backend is in use, terminate slapd after final provision and check its proper termination
if self.slapd.poll() is None:
#Kill the slapd
if hasattr(self.slapd, "terminate"):
self.slapd.terminate()
else:
# Older python versions don't have .terminate()
import signal
os.kill(self.slapd.pid, signal.SIGTERM)
#and now wait for it to die
self.slapd.communicate()
self.shutdown = ldap_backend_shutdown
if self.type == "fedora-ds":
provision_fds_backend(self, setup_path=setup_path,
names=names, message=message,
hostname=hostname,
ldapadminpass=ldapadminpass, root=root,
schema=schema,
ldap_backend_extra_port=ldap_backend_extra_port,
setup_ds_path=setup_ds_path,
slapd_path=slapd_path,
nosync=nosync,
ldap_dryrun_mode=ldap_dryrun_mode,
domainsid=domainsid)
elif self.type == "openldap":
provision_openldap_backend(self, setup_path=setup_path,
names=names, message=message,
hostname=hostname,
ldapadminpass=ldapadminpass, root=root,
schema=schema,
ldap_backend_extra_port=ldap_backend_extra_port,
ol_mmr_urls=ol_mmr_urls,
slapd_path=slapd_path,
nosync=nosync,
ldap_dryrun_mode=ldap_dryrun_mode)
else:
raise ProvisioningError("Unknown LDAP backend type selected")
self.credentials.set_password(ldapadminpass)
self.secrets_credentials.set_username("samba-admin")
self.secrets_credentials.set_password(ldapadminpass)
self.slapd_command_escaped = "\'" + "\' \'".join(self.slapd_command) + "\'"
setup_file(setup_path("ldap_backend_startup.sh"), paths.ldapdir + "/ldap_backend_startup.sh", {
"SLAPD_COMMAND" : slapd_command})
# Now start the slapd, so we can provision onto it. We keep the
# subprocess context around, to kill this off at the successful
# end of the script
self.slapd = subprocess.Popen(self.slapd_provision_command, close_fds=True, shell=False)
while self.slapd.poll() is None:
# Wait until the socket appears
try:
ldapi_db = Ldb(self.ldapi_uri, lp=lp, credentials=self.credentials)
search_ol_rootdse = ldapi_db.search(base="", scope=SCOPE_BASE,
expression="(objectClass=OpenLDAProotDSE)")
# If we have got here, then we must have a valid connection to the LDAP server!
return
except LdbError, e:
time.sleep(1)
pass
raise ProvisioningError("slapd died before we could make a connection to it")
def provision_openldap_backend(result, setup_path=None, names=None,
message=None,
hostname=None, ldapadminpass=None, root=None,
schema=None,
ldap_backend_extra_port=None,
ol_mmr_urls=None,
slapd_path=None, nosync=False,
ldap_dryrun_mode=False):
#Allow the test scripts to turn off fsync() for OpenLDAP as for TDB and LDB
nosync_config = ""
if nosync:
nosync_config = "dbnosync"
lnkattr = schema.linked_attributes()
refint_attributes = ""
memberof_config = "# Generated from Samba4 schema\n"
for att in lnkattr.keys():
if lnkattr[att] is not None:
refint_attributes = refint_attributes + " " + att
memberof_config += read_and_sub_file(setup_path("memberof.conf"),
{ "MEMBER_ATTR" : att ,
"MEMBEROF_ATTR" : lnkattr[att] })
refint_config = read_and_sub_file(setup_path("refint.conf"),
{ "LINK_ATTRS" : refint_attributes})
attrs = ["linkID", "lDAPDisplayName"]
res = schema.ldb.search(expression="(&(objectclass=attributeSchema)(searchFlags:1.2.840.113556.1.4.803:=1))", base=names.schemadn, scope=SCOPE_ONELEVEL, attrs=attrs)
index_config = ""
for i in range (0, len(res)):
index_attr = res[i]["lDAPDisplayName"][0]
if index_attr == "objectGUID":
index_attr = "entryUUID"
index_config += "index " + index_attr + " eq\n"
# generate serverids, ldap-urls and syncrepl-blocks for mmr hosts
mmr_on_config = ""
mmr_replicator_acl = ""
mmr_serverids_config = ""
mmr_syncrepl_schema_config = ""
mmr_syncrepl_config_config = ""
mmr_syncrepl_user_config = ""
if ol_mmr_urls is not None:
# For now, make these equal
mmr_pass = ldapadminpass
url_list=filter(None,ol_mmr_urls.split(' '))
if (len(url_list) == 1):
url_list=filter(None,ol_mmr_urls.split(','))
mmr_on_config = "MirrorMode On"
mmr_replicator_acl = " by dn=cn=replicator,cn=samba read"
serverid=0
for url in url_list:
serverid=serverid+1
mmr_serverids_config += read_and_sub_file(setup_path("mmr_serverids.conf"),
{ "SERVERID" : str(serverid),
"LDAPSERVER" : url })
rid=serverid*10
rid=rid+1
mmr_syncrepl_schema_config += read_and_sub_file(setup_path("mmr_syncrepl.conf"),
{ "RID" : str(rid),
"MMRDN": names.schemadn,
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass})
rid=rid+1
mmr_syncrepl_config_config += read_and_sub_file(setup_path("mmr_syncrepl.conf"),
{ "RID" : str(rid),
"MMRDN": names.configdn,
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass})
rid=rid+1
mmr_syncrepl_user_config += read_and_sub_file(setup_path("mmr_syncrepl.conf"),
{ "RID" : str(rid),
"MMRDN": names.domaindn,
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass })
# OpenLDAP cn=config initialisation
olc_syncrepl_config = ""
olc_mmr_config = ""
# if mmr = yes, generate cn=config-replication directives
# and olc_seed.lif for the other mmr-servers
if ol_mmr_urls is not None:
serverid=0
olc_serverids_config = ""
olc_syncrepl_seed_config = ""
olc_mmr_config += read_and_sub_file(setup_path("olc_mmr.conf"),{})
rid=1000
for url in url_list:
serverid=serverid+1
olc_serverids_config += read_and_sub_file(setup_path("olc_serverid.conf"),
{ "SERVERID" : str(serverid),
"LDAPSERVER" : url })
rid=rid+1
olc_syncrepl_config += read_and_sub_file(setup_path("olc_syncrepl.conf"),
{ "RID" : str(rid),
"LDAPSERVER" : url,
"MMR_PASSWORD": mmr_pass})
olc_syncrepl_seed_config += read_and_sub_file(setup_path("olc_syncrepl_seed.conf"),
{ "RID" : str(rid),
"LDAPSERVER" : url})
setup_file(setup_path("olc_seed.ldif"), result.paths.olcseedldif,
{"OLC_SERVER_ID_CONF": olc_serverids_config,
"OLC_PW": ldapadminpass,
"OLC_SYNCREPL_CONF": olc_syncrepl_seed_config})
# end olc
setup_file(setup_path("slapd.conf"), result.paths.slapdconf,
{"DNSDOMAIN": names.dnsdomain,
"LDAPDIR": result.paths.ldapdir,
"DOMAINDN": names.domaindn,
"CONFIGDN": names.configdn,
"SCHEMADN": names.schemadn,
"MEMBEROF_CONFIG": memberof_config,
"MIRRORMODE": mmr_on_config,
"REPLICATOR_ACL": mmr_replicator_acl,
"MMR_SERVERIDS_CONFIG": mmr_serverids_config,
"MMR_SYNCREPL_SCHEMA_CONFIG": mmr_syncrepl_schema_config,
"MMR_SYNCREPL_CONFIG_CONFIG": mmr_syncrepl_config_config,
"MMR_SYNCREPL_USER_CONFIG": mmr_syncrepl_user_config,
"OLC_SYNCREPL_CONFIG": olc_syncrepl_config,
"OLC_MMR_CONFIG": olc_mmr_config,
"REFINT_CONFIG": refint_config,
"INDEX_CONFIG": index_config,
"NOSYNC": nosync_config})
setup_db_config(setup_path, os.path.join(result.paths.ldapdir, "db", "user"))
setup_db_config(setup_path, os.path.join(result.paths.ldapdir, "db", "config"))
setup_db_config(setup_path, os.path.join(result.paths.ldapdir, "db", "schema"))
if not os.path.exists(os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba")):
os.makedirs(os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba"), 0700)
setup_file(setup_path("cn=samba.ldif"),
os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba.ldif"),
{ "UUID": str(uuid.uuid4()),
"LDAPTIME": timestring(int(time.time()))} )
setup_file(setup_path("cn=samba-admin.ldif"),
os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba", "cn=samba-admin.ldif"),
{"LDAPADMINPASS_B64": b64encode(ldapadminpass),
"UUID": str(uuid.uuid4()),
"LDAPTIME": timestring(int(time.time()))} )
if ol_mmr_urls is not None:
setup_file(setup_path("cn=replicator.ldif"),
os.path.join(result.paths.ldapdir, "db", "samba", "cn=samba", "cn=replicator.ldif"),
{"MMR_PASSWORD_B64": b64encode(mmr_pass),
"UUID": str(uuid.uuid4()),
"LDAPTIME": timestring(int(time.time()))} )
mapping = "schema-map-openldap-2.3"
backend_schema = "backend-schema.schema"
backend_schema_data = schema.ldb.convert_schema_to_openldap("openldap", open(setup_path(mapping), 'r').read())
assert backend_schema_data is not None
open(os.path.join(result.paths.ldapdir, backend_schema), 'w').write(backend_schema_data)
# now we generate the needed strings to start slapd automatically,
# first ldapi_uri...
if ldap_backend_extra_port is not None:
# When we use MMR, we can't use 0.0.0.0 as it uses the name
# specified there as part of it's clue as to it's own name,
# and not to replicate to itself
if ol_mmr_urls is None:
server_port_string = "ldap://0.0.0.0:%d" % ldap_backend_extra_port
else:
server_port_string = "ldap://" + names.hostname + "." + names.dnsdomain +":%d" % ldap_backend_extra_port
else:
server_port_string = ""
# Prepare the 'result' information - the commands to return in particular
result.slapd_provision_command = [slapd_path]
result.slapd_provision_command.append("-F" + result.paths.olcdir)
result.slapd_provision_command.append("-h")
# copy this command so we have two version, one with -d0 and only ldapi, and one with all the listen commands
result.slapd_command = list(result.slapd_provision_command)
result.slapd_provision_command.append(result.ldapi_uri)
result.slapd_provision_command.append("-d0")
uris = result.ldapi_uri
if server_port_string is not "":
uris = uris + " " + server_port_string
result.slapd_command.append(uris)
# Set the username - done here because Fedora DS still uses the admin DN and simple bind
result.credentials.set_username("samba-admin")
# If we were just looking for crashes up to this point, it's a
# good time to exit before we realise we don't have OpenLDAP on
# this system
if ldap_dryrun_mode:
sys.exit(0)
# Finally, convert the configuration into cn=config style!
if not os.path.isdir(result.paths.olcdir):
os.makedirs(result.paths.olcdir, 0770)
retcode = subprocess.call([slapd_path, "-Ttest", "-f", result.paths.slapdconf, "-F", result.paths.olcdir], close_fds=True, shell=False)
# We can't do this, as OpenLDAP is strange. It gives an error
# output to the above, but does the conversion sucessfully...
#
# if retcode != 0:
# raise ProvisioningError("conversion from slapd.conf to cn=config failed")
if not os.path.exists(os.path.join(result.paths.olcdir, "cn=config.ldif")):
raise ProvisioningError("conversion from slapd.conf to cn=config failed")
# Don't confuse the admin by leaving the slapd.conf around
os.remove(result.paths.slapdconf)
def provision_fds_backend(result, setup_path=None, names=None,
message=None,
hostname=None, ldapadminpass=None, root=None,
schema=None,
ldap_backend_extra_port=None,
setup_ds_path=None,
slapd_path=None,
nosync=False,
ldap_dryrun_mode=False,
domainsid=None):
if ldap_backend_extra_port is not None:
serverport = "ServerPort=%d" % ldap_backend_extra_port
else:
serverport = ""
setup_file(setup_path("fedorads.inf"), result.paths.fedoradsinf,
{"ROOT": root,
"HOSTNAME": hostname,
"DNSDOMAIN": names.dnsdomain,
"LDAPDIR": result.paths.ldapdir,
"DOMAINDN": names.domaindn,
"LDAPMANAGERDN": names.ldapmanagerdn,
"LDAPMANAGERPASS": ldapadminpass,
"SERVERPORT": serverport})
setup_file(setup_path("fedorads-partitions.ldif"), result.paths.fedoradspartitions,
{"CONFIGDN": names.configdn,
"SCHEMADN": names.schemadn,
"SAMBADN": names.sambadn,
})
setup_file(setup_path("fedorads-sasl.ldif"), result.paths.fedoradssasl,
{"SAMBADN": names.sambadn,
})
setup_file(setup_path("fedorads-dna.ldif"), result.paths.fedoradsdna,
{"DOMAINDN": names.domaindn,
"SAMBADN": names.sambadn,
"DOMAINSID": str(domainsid),
})
setup_file(setup_path("fedorads-pam.ldif"), result.paths.fedoradspam)
lnkattr = schema.linked_attributes()
refint_config = data = open(setup_path("fedorads-refint-delete.ldif"), 'r').read()
memberof_config = ""
index_config = ""
argnum = 3
for attr in lnkattr.keys():
if lnkattr[attr] is not None:
refint_config += read_and_sub_file(setup_path("fedorads-refint-add.ldif"),
{ "ARG_NUMBER" : str(argnum) ,
"LINK_ATTR" : attr })
memberof_config += read_and_sub_file(setup_path("fedorads-linked-attributes.ldif"),
{ "MEMBER_ATTR" : attr ,
"MEMBEROF_ATTR" : lnkattr[attr] })
index_config += read_and_sub_file(setup_path("fedorads-index.ldif"),
{ "ATTR" : attr })
argnum += 1
open(result.paths.fedoradsrefint, 'w').write(refint_config)
open(result.paths.fedoradslinkedattributes, 'w').write(memberof_config)
attrs = ["lDAPDisplayName"]
res = schema.ldb.search(expression="(&(objectclass=attributeSchema)(searchFlags:1.2.840.113556.1.4.803:=1))", base=names.schemadn, scope=SCOPE_ONELEVEL, attrs=attrs)
for i in range (0, len(res)):
attr = res[i]["lDAPDisplayName"][0]
if attr == "objectGUID":
attr = "nsUniqueId"
index_config += read_and_sub_file(setup_path("fedorads-index.ldif"),
{ "ATTR" : attr })
open(result.paths.fedoradsindex, 'w').write(index_config)
setup_file(setup_path("fedorads-samba.ldif"), result.paths.fedoradssamba,
{"SAMBADN": names.sambadn,
"LDAPADMINPASS": ldapadminpass
})
mapping = "schema-map-fedora-ds-1.0"
backend_schema = "99_ad.ldif"
# Build a schema file in Fedora DS format
backend_schema_data = schema.ldb.convert_schema_to_openldap("fedora-ds", open(setup_path(mapping), 'r').read())
assert backend_schema_data is not None
open(os.path.join(result.paths.ldapdir, backend_schema), 'w').write(backend_schema_data)
result.credentials.set_bind_dn(names.ldapmanagerdn)
# Destory the target directory, or else setup-ds.pl will complain
fedora_ds_dir = os.path.join(result.paths.ldapdir, "slapd-samba4")
shutil.rmtree(fedora_ds_dir, True)
result.slapd_provision_command = [slapd_path, "-D", fedora_ds_dir, "-i", result.paths.slapdpid];
#In the 'provision' command line, stay in the foreground so we can easily kill it
result.slapd_provision_command.append("-d0")
#the command for the final run is the normal script
result.slapd_command = [os.path.join(result.paths.ldapdir, "slapd-samba4", "start-slapd")]
# If we were just looking for crashes up to this point, it's a
# good time to exit before we realise we don't have Fedora DS on
if ldap_dryrun_mode:
sys.exit(0)
# Try to print helpful messages when the user has not specified the path to the setup-ds tool
if setup_ds_path is None:
raise ProvisioningError("Warning: Fedora DS LDAP-Backend must be setup with path to setup-ds, e.g. --setup-ds-path=\"/usr/sbin/setup-ds.pl\"!")
if not os.path.exists(setup_ds_path):
message (setup_ds_path)
raise ProvisioningError("Warning: Given Path to slapd does not exist!")
# Run the Fedora DS setup utility
retcode = subprocess.call([setup_ds_path, "--silent", "--file", result.paths.fedoradsinf], close_fds=True, shell=False)
if retcode != 0:
raise ProvisioningError("setup-ds failed")
# Load samba-admin
retcode = subprocess.call([
os.path.join(result.paths.ldapdir, "slapd-samba4", "ldif2db"), "-s", names.sambadn, "-i", result.paths.fedoradssamba],
close_fds=True, shell=False)
if retcode != 0:
raise("ldib2db failed")
# Leave a hook to do the 'post initilisation' setup
def fds_post_setup(self):
ldapi_db = Ldb(self.ldapi_uri, credentials=self.credentials)
# delete default SASL mappings
res = ldapi_db.search(expression="(!(cn=samba-admin mapping))", base="cn=mapping,cn=sasl,cn=config", scope=SCOPE_ONELEVEL, attrs=["dn"])
# configure in-directory access control on Fedora DS via the aci attribute (over a direct ldapi:// socket)
for i in range (0, len(res)):
dn = str(res[i]["dn"])
ldapi_db.delete(dn)
aci = """(targetattr = "*") (version 3.0;acl "full access to all by samba-admin";allow (all)(userdn = "ldap:///CN=samba-admin,%s");)""" % names.sambadn
m = ldb.Message()
m["aci"] = ldb.MessageElement([aci], ldb.FLAG_MOD_REPLACE, "aci")
m.dn = ldb.Dn(1, names.domaindn)
ldapi_db.modify(m)
m.dn = ldb.Dn(1, names.configdn)
ldapi_db.modify(m)
m.dn = ldb.Dn(1, names.schemadn)
ldapi_db.modify(m)
result.post_setup = fds_post_setup