def import_sam_policy(samdb, policy, logger):
"""Import a Samba 3 policy.
:param samdb: Samba4 SAM database
:param policy: Samba3 account policy
:param logger: Logger object
"""
# Following entries are used -
# min password length, password history, minimum password age,
# maximum password age, lockout duration
#
# Following entries are not used -
# reset count minutes, user must logon to change password,
# bad lockout minutes, disconnect time
m = ldb.Message()
m.dn = samdb.get_default_basedn()
m['a01'] = ldb.MessageElement(str(policy['min password length']),
ldb.FLAG_MOD_REPLACE, 'minPwdLength')
m['a02'] = ldb.MessageElement(str(policy['password history']),
ldb.FLAG_MOD_REPLACE, 'pwdHistoryLength')
min_pw_age_unix = policy['minimum password age']
min_pw_age_nt = 0 - unix2nttime(min_pw_age_unix)
m['a03'] = ldb.MessageElement(str(min_pw_age_nt), ldb.FLAG_MOD_REPLACE,
'minPwdAge')
max_pw_age_unix = policy['maximum password age']
if (max_pw_age_unix == 0xFFFFFFFF):
max_pw_age_nt = 0
else:
max_pw_age_nt = unix2nttime(max_pw_age_unix)
m['a04'] = ldb.MessageElement(str(max_pw_age_nt), ldb.FLAG_MOD_REPLACE,
'maxPwdAge')
lockout_duration_mins = policy['lockout duration']
lockout_duration_nt = unix2nttime(lockout_duration_mins * 60)
m['a05'] = ldb.MessageElement(str(lockout_duration_nt),
ldb.FLAG_MOD_REPLACE, 'lockoutDuration')
try:
samdb.modify(m)
except ldb.LdbError, e:
logger.warn("Could not set account policy, (%s)", str(e))
def set_attribute_replmetadata_version(self,
dn,
att,
value,
addifnotexist=False):
res = self.search(expression="distinguishedName=%s" % dn,
scope=ldb.SCOPE_SUBTREE,
controls=["search_options:1:2"],
attrs=["replPropertyMetaData"])
if len(res) == 0:
return None
repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
res[0]["replPropertyMetaData"][0])
ctr = repl.ctr
now = samba.unix2nttime(int(time.time()))
found = False
if len(self.hash_oid_name.keys()) == 0:
self._populate_oid_attid()
for o in ctr.array:
# Search for Description
att_oid = self.get_oid_from_attid(o.attid)
if att_oid in self.hash_oid_name and\
att.lower() == self.hash_oid_name[att_oid].lower():
found = True
seq = self.sequence_number(ldb.SEQ_NEXT)
o.version = value
o.originating_change_time = now
o.originating_invocation_id = misc.GUID(
self.get_invocation_id())
o.originating_usn = seq
o.local_usn = seq
if not found and addifnotexist and len(ctr.array) > 0:
o2 = drsblobs.replPropertyMetaData1()
o2.attid = 589914
att_oid = self.get_oid_from_attid(o2.attid)
seq = self.sequence_number(ldb.SEQ_NEXT)
o2.version = value
o2.originating_change_time = now
o2.originating_invocation_id = misc.GUID(self.get_invocation_id())
o2.originating_usn = seq
o2.local_usn = seq
found = True
tab = ctr.array
tab.append(o2)
ctr.count = ctr.count + 1
ctr.array = tab
if found:
replBlob = ndr_pack(repl)
msg = ldb.Message()
msg.dn = res[0].dn
msg["replPropertyMetaData"] = \
ldb.MessageElement(replBlob,
ldb.FLAG_MOD_REPLACE,
"replPropertyMetaData")
self.modify(msg, ["local_oid:1.3.6.1.4.1.7165.4.3.14:0"])
def generate_auth(self, trustdom_secret):
def arcfour_encrypt(key, data):
c = RC4.RC4(key)
return c.update(data)
def string_to_array(what):
blob = [0] * len(what)
for i in range(len(what)):
blob[i] = ord(what[i])
return blob
password_blob = string_to_array(trustdom_secret.encode('utf-16-le'))
clear_value = drsblobs.AuthInfoClear()
clear_value.size = len(password_blob)
clear_value.password = password_blob
clear_authentication_information = drsblobs.AuthenticationInformation()
clear_authentication_information.LastUpdateTime = samba.unix2nttime(
int(time.time()))
clear_authentication_information.AuthType = lsa.TRUST_AUTH_TYPE_CLEAR
clear_authentication_information.AuthInfo = clear_value
authentication_information_array = drsblobs.AuthenticationInformationArray(
)
authentication_information_array.count = 1
authentication_information_array.array = [
clear_authentication_information
]
outgoing = drsblobs.trustAuthInOutBlob()
outgoing.count = 1
outgoing.current = authentication_information_array
confounder = [3] * 512
for i in range(512):
confounder[i] = random.randint(0, 255)
trustpass = drsblobs.trustDomainPasswords()
trustpass.confounder = confounder
trustpass.outgoing = outgoing
trustpass.incoming = outgoing
trustpass_blob = ndr_pack(trustpass)
encrypted_trustpass = arcfour_encrypt(self._pipe.session_key,
trustpass_blob)
auth_blob = lsa.DATA_BUF2()
auth_blob.size = len(encrypted_trustpass)
auth_blob.data = string_to_array(encrypted_trustpass)
auth_info = lsa.TrustDomainInfoAuthInfoInternal()
auth_info.auth_blob = auth_blob
self.auth_info = auth_info
def __init__(self, url, setup_dir=""):
self.url = url
self._connect_to_mysql()
self.nttime = samba.unix2nttime(int(time.time()))
self.ou_id = None # initialized on add_server() method
self.replica_id = 1
self.global_count = 1 # folder_id for public folders
self._change_number = None
self.migration_app = 'openchangedb'
def __init__(self, url, setup_dir=""):
self.url = url
self.schema = os.path.join(setup_dir, self.OPENCHANGEDB_SCHEMA)
self._connect_to_mysql()
self.nttime = samba.unix2nttime(int(time.time()))
self.ou_id = None # initialized on add_server() method
self.replica_id = 1
self.global_count = 1 # folder_id for public folders
self._change_number = None
def __init__(self, url, setup_dir=""):
self.url = url
self.schema = os.path.join(setup_dir, self.OPENCHANGEDB_SCHEMA)
self._connect_to_mysql()
self.nttime = samba.unix2nttime(int(time.time()))
self.ou_id = None # initialized on add_server() method
self.replica_id = 1
self.global_count = 1 # folder_id for public folders
self._change_number = None
def __init__(self, url, setup_dir=""):
self.url = url
self._connect_to_mysql()
self.nttime = samba.unix2nttime(int(time.time()))
self.ou_id = None # initialized on add_server() method
self.replica_id = 1
self.global_count = 1 # folder_id for public folders
self._change_number = None
self.migration_app = 'openchangedb'
def import_sam_policy(samdb, policy, logger):
"""Import a Samba 3 policy.
:param samdb: Samba4 SAM database
:param policy: Samba3 account policy
:param logger: Logger object
"""
# Following entries are used -
# min password length, password history, minimum password age,
# maximum password age, lockout duration
#
# Following entries are not used -
# reset count minutes, user must logon to change password,
# bad lockout minutes, disconnect time
m = ldb.Message()
m.dn = samdb.get_default_basedn()
if 'min password length' in policy:
m['a01'] = ldb.MessageElement(str(policy['min password length']),
ldb.FLAG_MOD_REPLACE, 'minPwdLength')
if 'password history' in policy:
m['a02'] = ldb.MessageElement(str(policy['password history']),
ldb.FLAG_MOD_REPLACE, 'pwdHistoryLength')
if 'minimum password age' in policy:
min_pw_age_unix = policy['minimum password age']
min_pw_age_nt = int(-min_pw_age_unix * (1e7))
m['a03'] = ldb.MessageElement(str(min_pw_age_nt), ldb.FLAG_MOD_REPLACE,
'minPwdAge')
if 'maximum password age' in policy:
max_pw_age_unix = policy['maximum password age']
if max_pw_age_unix == -1 or max_pw_age_unix == 0:
max_pw_age_nt = -0x8000000000000000
else:
max_pw_age_nt = int(-max_pw_age_unix * (1e7))
m['a04'] = ldb.MessageElement(str(max_pw_age_nt), ldb.FLAG_MOD_REPLACE,
'maxPwdAge')
if 'lockout duration' in policy:
lockout_duration_mins = policy['lockout duration']
lockout_duration_nt = unix2nttime(lockout_duration_mins * 60)
m['a05'] = ldb.MessageElement(str(lockout_duration_nt),
ldb.FLAG_MOD_REPLACE, 'lockoutDuration')
try:
samdb.modify(m)
except ldb.LdbError, e:
logger.warn("Could not set account policy, (%s)", str(e))
def set_attribute_replmetadata_version(self, dn, att, value,
addifnotexist=False):
res = self.search(expression="distinguishedName=%s" % dn,
scope=ldb.SCOPE_SUBTREE,
controls=["search_options:1:2"],
attrs=["replPropertyMetaData"])
if len(res) == 0:
return None
repl = ndr_unpack(drsblobs.replPropertyMetaDataBlob,
str(res[0]["replPropertyMetaData"]))
ctr = repl.ctr
now = samba.unix2nttime(int(time.time()))
found = False
if len(self.hash_oid_name.keys()) == 0:
self._populate_oid_attid()
for o in ctr.array:
# Search for Description
att_oid = self.get_oid_from_attid(o.attid)
if self.hash_oid_name.has_key(att_oid) and\
att.lower() == self.hash_oid_name[att_oid].lower():
found = True
seq = self.sequence_number(ldb.SEQ_NEXT)
o.version = value
o.originating_change_time = now
o.originating_invocation_id = misc.GUID(self.get_invocation_id())
o.originating_usn = seq
o.local_usn = seq
if not found and addifnotexist and len(ctr.array) >0:
o2 = drsblobs.replPropertyMetaData1()
o2.attid = 589914
att_oid = self.get_oid_from_attid(o2.attid)
seq = self.sequence_number(ldb.SEQ_NEXT)
o2.version = value
o2.originating_change_time = now
o2.originating_invocation_id = misc.GUID(self.get_invocation_id())
o2.originating_usn = seq
o2.local_usn = seq
found = True
tab = ctr.array
tab.append(o2)
ctr.count = ctr.count + 1
ctr.array = tab
if found :
replBlob = ndr_pack(repl)
msg = ldb.Message()
msg.dn = res[0].dn
msg["replPropertyMetaData"] = ldb.MessageElement(replBlob,
ldb.FLAG_MOD_REPLACE,
"replPropertyMetaData")
self.modify(msg, ["local_oid:1.3.6.1.4.1.7165.4.3.14:0"])
def setexpiry(self, search_filter, expiry_seconds, no_expiry_req=False):
"""Sets the account expiry for a user
:param search_filter: LDAP filter to find the user (eg
samaccountname=name)
:param expiry_seconds: expiry time from now in seconds
:param no_expiry_req: if set, then don't expire password
"""
self.transaction_start()
try:
res = self.search(base=self.domain_dn(),
scope=ldb.SCOPE_SUBTREE,
expression=search_filter,
attrs=["userAccountControl", "accountExpires"])
if len(res) == 0:
raise Exception('Unable to find user "%s"' % search_filter)
assert (len(res) == 1)
user_dn = res[0].dn
userAccountControl = int(res[0]["userAccountControl"][0])
accountExpires = int(res[0]["accountExpires"][0])
if no_expiry_req:
userAccountControl = userAccountControl | 0x10000
accountExpires = 0
else:
userAccountControl = userAccountControl & ~0x10000
accountExpires = samba.unix2nttime(expiry_seconds +
int(time.time()))
setexp = """
dn: %s
changetype: modify
replace: userAccountControl
userAccountControl: %u
replace: accountExpires
accountExpires: %u
""" % (user_dn, userAccountControl, accountExpires)
self.modify_ldif(setexp)
except:
self.transaction_cancel()
raise
else:
self.transaction_commit()
def __init__(self, url):
self.url = url
self.ldb = Ldb(self.url)
self.nttime = samba.unix2nttime(int(time.time()))
def join_setup_trusts(ctx):
'''provision the local SAM'''
def arcfour_encrypt(key, data):
from Crypto.Cipher import ARC4
c = ARC4.new(key)
return c.encrypt(data)
def string_to_array(string):
blob = [0] * len(string)
for i in range(len(string)):
blob[i] = ord(string[i])
return blob
print "Setup domain trusts with server %s" % ctx.server
binding_options = "" # why doesn't signing work here? w2k8r2 claims no session key
lsaconn = lsa.lsarpc("ncacn_np:%s[%s]" % (ctx.server, binding_options),
ctx.lp, ctx.creds)
objectAttr = lsa.ObjectAttribute()
objectAttr.sec_qos = lsa.QosInfo()
pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'), objectAttr,
security.SEC_FLAG_MAXIMUM_ALLOWED)
info = lsa.TrustDomainInfoInfoEx()
info.domain_name.string = ctx.dnsdomain
info.netbios_name.string = ctx.domain_name
info.sid = security.dom_sid(ctx.domsid)
info.trust_direction = lsa.LSA_TRUST_DIRECTION_INBOUND | lsa.LSA_TRUST_DIRECTION_OUTBOUND
info.trust_type = lsa.LSA_TRUST_TYPE_UPLEVEL
info.trust_attributes = lsa.LSA_TRUST_ATTRIBUTE_WITHIN_FOREST
try:
oldname = lsa.String()
oldname.string = ctx.dnsdomain
oldinfo = lsaconn.QueryTrustedDomainInfoByName(
pol_handle, oldname, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
print("Removing old trust record for %s (SID %s)" %
(ctx.dnsdomain, oldinfo.info_ex.sid))
lsaconn.DeleteTrustedDomain(pol_handle, oldinfo.info_ex.sid)
except RuntimeError:
pass
password_blob = string_to_array(ctx.trustdom_pass.encode('utf-16-le'))
clear_value = drsblobs.AuthInfoClear()
clear_value.size = len(password_blob)
clear_value.password = password_blob
clear_authentication_information = drsblobs.AuthenticationInformation()
clear_authentication_information.LastUpdateTime = samba.unix2nttime(
int(time.time()))
clear_authentication_information.AuthType = lsa.TRUST_AUTH_TYPE_CLEAR
clear_authentication_information.AuthInfo = clear_value
authentication_information_array = drsblobs.AuthenticationInformationArray(
)
authentication_information_array.count = 1
authentication_information_array.array = [
clear_authentication_information
]
outgoing = drsblobs.trustAuthInOutBlob()
outgoing.count = 1
outgoing.current = authentication_information_array
trustpass = drsblobs.trustDomainPasswords()
confounder = [3] * 512
for i in range(512):
confounder[i] = random.randint(0, 255)
trustpass.confounder = confounder
trustpass.outgoing = outgoing
trustpass.incoming = outgoing
trustpass_blob = ndr_pack(trustpass)
encrypted_trustpass = arcfour_encrypt(lsaconn.session_key,
trustpass_blob)
auth_blob = lsa.DATA_BUF2()
auth_blob.size = len(encrypted_trustpass)
auth_blob.data = string_to_array(encrypted_trustpass)
auth_info = lsa.TrustDomainInfoAuthInfoInternal()
auth_info.auth_blob = auth_blob
trustdom_handle = lsaconn.CreateTrustedDomainEx2(
pol_handle, info, auth_info, security.SEC_STD_DELETE)
rec = {
"dn": "cn=%s,cn=system,%s" % (ctx.dnsforest, ctx.base_dn),
"objectclass": "trustedDomain",
"trustType": str(info.trust_type),
"trustAttributes": str(info.trust_attributes),
"trustDirection": str(info.trust_direction),
"flatname": ctx.forest_domain_name,
"trustPartner": ctx.dnsforest,
"trustAuthIncoming": ndr_pack(outgoing),
"trustAuthOutgoing": ndr_pack(outgoing)
}
ctx.local_samdb.add(rec)
rec = {
"dn": "cn=%s$,cn=users,%s" % (ctx.forest_domain_name, ctx.base_dn),
"objectclass": "user",
"userAccountControl": str(samba.dsdb.UF_INTERDOMAIN_TRUST_ACCOUNT),
"clearTextPassword": ctx.trustdom_pass.encode('utf-16-le')
}
ctx.local_samdb.add(rec)