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#!/usr/bin/python
import optparse
import sys
import base64
sys.path.insert(0, "bin/python")
import samba.getopt as options
from samba.dcerpc import drsblobs, misc
from samba.ndr import ndr_pack, ndr_unpack
from samba import Ldb
parser = optparse.OptionParser("get-descriptor [options]")
sambaopts = options.SambaOptions(parser)
credopts = options.CredentialsOptions(parser)
parser.add_option_group(credopts)
parser.add_option("-b", type="string", metavar="BASE",
help="set base DN for the search")
parser.add_option("--host", type="string", metavar="HOST",
help="Ip of the host")
lp = sambaopts.get_loadparm()
creds = credopts.get_credentials(lp)
opts = parser.parse_args()[0]
def printdirsync(ctl):
arr = ctl.split(':')
if arr[0] == 'dirsync':
print "Need to continue: %s" % arr[1]
cookie = ndr_unpack(drsblobs.ldapControlDirSyncCookie, base64.b64decode(arr[3]))
print "DC's NTDS guid: %s " % cookie.blob.guid1
print "highest usn %s" % cookie.blob.highwatermark.highest_usn
print "tmp higest usn %s" % cookie.blob.highwatermark.tmp_highest_usn
print "reserved usn %s" % cookie.blob.highwatermark.reserved_usn
if cookie.blob.extra_length >0:
print "highest usn in extra %s" % cookie.blob.extra.ctr.cursors[0].highest_usn
return cookie
remote_ldb= Ldb("ldap://" + opts.host + ":389", credentials=creds, lp=lp)
tab = []
if opts.b:
base = opts.b
else:
base = None
guid = None
(msgs, ctrls) = remote_ldb.search(expression="(samaccountname=administrator)", base=base, attrs=["objectClass"], controls=["dirsync:1:1:50"])
if (len(ctrls)):
for ctl in ctrls:
arr = ctl.split(':')
if arr[0] == 'dirsync':
cookie = ndr_unpack(drsblobs.ldapControlDirSyncCookie, base64.b64decode(arr[3]))
guid = cookie.blob.guid1
pass
if not guid:
print "No dirsync control ... strange"
sys.exit(1)
print ""
print "Getting first guest without any cookie"
(msgs, ctrls) = remote_ldb.searchex(expression="(samaccountname=guest)", base=base, attrs=["objectClass"], controls=["dirsync:1:1:50"])
cookie = None
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
print "Returned %d entries" % len(msgs)
savedcookie = cookie
print ""
print "Getting allusers with cookie"
controls=["dirsync:1:1:50:%s" % base64.b64encode(ndr_pack(cookie))]
(msgs, ctrls) = remote_ldb.searchex(expression="(samaccountname=*)", base=base, attrs=["objectClass"], controls=controls)
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
print "Returned %d entries" % len(msgs)
cookie = savedcookie
cookie.blob.guid1 = misc.GUID("128a99bf-e2df-4832-ac0a-1fb625e530db")
if cookie.blob.extra_length > 0:
cookie.blob.extra.ctr.cursors[0].source_dsa_invocation_id = misc.GUID("128a99bf-e2df-4832-ac0a-1fb625e530db")
print ""
print "Getting all the entries"
controls=["dirsync:1:1:50:%s" % base64.b64encode(ndr_pack(cookie))]
(msgs, ctrls) = remote_ldb.searchex(expression="(objectclass=*)", base=base, controls=controls)
cont = 0
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
if cookie != None:
cont = (ctl.split(':'))[1]
print "Returned %d entries" % len(msgs)
usn = cookie.blob.highwatermark.tmp_highest_usn
if cookie.blob.extra_length > 0:
bigusn = cookie.blob.extra.ctr.cursors[0].highest_usn
else:
bigusn = usn + 1000
while (cont == "1"):
print ""
controls=["dirsync:1:1:50:%s" % base64.b64encode(ndr_pack(cookie))]
(msgs, ctrls) = remote_ldb.searchex(expression="(objectclass=*)", base=base, controls=controls)
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
if cookie != None:
cont = (ctl.split(':'))[1]
print "Returned %d entries" % len(msgs)
print ""
print "Getting with cookie but usn changed to %d we should use the one in extra" % (bigusn - 1)
cookie.blob.highwatermark.highest_usn = 0
cookie.blob.highwatermark.tmp_highest_usn = usn - 2
if cookie.blob.extra_length > 0:
print "here"
cookie.blob.extra.ctr.cursors[0].highest_usn = bigusn - 1
controls=["dirsync:1:1:50:%s" % base64.b64encode(ndr_pack(cookie))]
(msgs, ctrls) = remote_ldb.searchex(expression="(objectclass=*)", base=base, controls=controls)
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
print "Returned %d entries" % len(msgs)
print ""
print "Getting with cookie but usn %d changed and extra/cursor GUID too" % (usn - 2)
print " so that it's (tmp)highest_usn that drives the limit"
cookie.blob.highwatermark.highest_usn = 0
cookie.blob.highwatermark.tmp_highest_usn = usn - 2
if cookie.blob.extra_length > 0:
cookie.blob.extra.ctr.cursors[0].source_dsa_invocation_id = misc.GUID("128a99bf-e2df-4832-ac0a-1fb625e530db")
cookie.blob.extra.ctr.cursors[0].highest_usn = bigusn - 1
controls=["dirsync:1:1:50:%s" % base64.b64encode(ndr_pack(cookie))]
(msgs, ctrls) = remote_ldb.searchex(expression="(objectclass=*)", base=base, controls=controls)
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
print "Returned %d entries" % len(msgs)
print ""
print "Getting with cookie but usn changed to %d" % (usn - 2)
cookie.blob.highwatermark.highest_usn = 0
cookie.blob.highwatermark.tmp_highest_usn = (usn - 2)
if cookie.blob.extra_length > 0:
cookie.blob.extra.ctr.cursors[0].highest_usn = (usn - 2)
controls=["dirsync:1:1:50:%s" % base64.b64encode(ndr_pack(cookie))]
(msgs, ctrls) = remote_ldb.searchex(expression="(objectclass=*)", base=base, controls=controls)
if (len(ctrls)):
for ctl in ctrls:
cookie = printdirsync(ctl)
print "Returned %d entries" % len(msgs)
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