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s4-dsdb: moved dsdb_Dn() into common.py

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this gives a method for dealing with binary DNs from python

Pair-Programmed-With: Amitay Isaacs <amitay@gmail.com>
This commit is contained in:
Andrew Tridgell
2011-10-20 13:24:45 +11:00
parent 43e5592e9a
commit 4f08a2951a
2 changed files with 43 additions and 26 deletions
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40
source4/scripting/python/samba/common.py
View File

@ -18,6 +18,8 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import ldb, dsdb
def confirm(msg, forced = False, allow_all=False):
"""confirm an action with the user
:param msg: A string to print to the user
@ -55,3 +57,41 @@ def normalise_int32(ivalue):
if int(ivalue) & 0x80000000 and int(ivalue) > 0:
return str(int(ivalue) - 0x100000000)
return str(ivalue)
class dsdb_Dn(object):
'''a class for binary DN'''
def __init__(self, samdb, dnstring, syntax_oid=None):
'''create a dsdb_Dn'''
if syntax_oid is None:
# auto-detect based on string
if dnstring.startswith("B:"):
syntax_oid = dsdb.DSDB_SYNTAX_BINARY_DN
elif dnstring.startswith("S:"):
syntax_oid = dsdb.DSDB_SYNTAX_STRING_DN
else:
syntax_oid = dsdb.DSDB_SYNTAX_OR_NAME
if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_STRING_DN ]:
# it is a binary DN
colons = dnstring.split(':')
if len(colons) < 4:
raise RuntimeError("Invalid DN %s" % dnstring)
prefix_len = 4 + len(colons[1]) + int(colons[1])
self.prefix = dnstring[0:prefix_len]
self.binary = self.prefix[4:-1]
self.dnstring = dnstring[prefix_len:]
else:
self.dnstring = dnstring
self.prefix = ''
self.binary = ''
self.dn = ldb.Dn(samdb, self.dnstring)
def __str__(self):
return self.prefix + str(self.dn.extended_str(mode=1))
def get_binary_integer(self):
'''return binary part of a dsdb_Dn as an integer, or None'''
if self.prefix == '':
return None
return int(self.binary, 16)

29
source4/scripting/python/samba/dbchecker.py
View File

@ -25,30 +25,7 @@ from samba import common
from samba.dcerpc import misc
from samba.ndr import ndr_unpack
from samba.dcerpc import drsblobs
class dsdb_DN(object):
'''a class to manipulate DN components'''
def __init__(self, samdb, dnstring, syntax_oid):
if syntax_oid in [ dsdb.DSDB_SYNTAX_BINARY_DN, dsdb.DSDB_SYNTAX_STRING_DN ]:
colons = dnstring.split(':')
if len(colons) < 4:
raise Exception("invalid DN prefix")
prefix_len = 4 + len(colons[1]) + int(colons[1])
self.prefix = dnstring[0:prefix_len]
self.dnstring = dnstring[prefix_len:]
else:
self.dnstring = dnstring
self.prefix = ''
try:
self.dn = ldb.Dn(samdb, self.dnstring)
except Exception, msg:
print("ERROR: bad DN string '%s'" % self.dnstring)
raise
def __str__(self):
return self.prefix + str(self.dn.extended_str(mode=1))
from samba.common import dsdb_Dn
class dbcheck(object):
"""check a SAM database for errors"""
@ -196,7 +173,7 @@ class dbcheck(object):
self.report("Normalised attribute %s" % attrname)
def is_deleted_objects_dn(self, dsdb_dn):
'''see if a dsdb_DN is the special Deleted Objects DN'''
'''see if a dsdb_Dn is the special Deleted Objects DN'''
return dsdb_dn.prefix == "B:32:18E2EA80684F11D2B9AA00C04F79F805:"
@ -329,7 +306,7 @@ class dbcheck(object):
'''check a DN attribute for correctness'''
error_count = 0
for val in obj[attrname]:
dsdb_dn = dsdb_DN(self.samdb, val, syntax_oid)
dsdb_dn = dsdb_Dn(self.samdb, val, syntax_oid)
# all DNs should have a GUID component
guid = dsdb_dn.dn.get_extended_component("GUID")