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# This is a quick hack to convert an openldap schema file to a form which
# can be loaded into Samba4/AD.
#
# Inspired by:
# http://david-latham.blogspot.co.uk/2012/12/extending-ad-schema-on-samba4-part-2.html
# https://github.com/linuxplayground/yubikey-ldap/tree/master/samba4-schema
#
# (c) 2017 Brian Candler <b.candler@pobox.com>
# -------------------------------------------------------------------------
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
# -----------------------------------------------------------------------
from __future__ import print_function
import sys
import re
from collections import OrderedDict
BASEDN = 'dc=samba4,dc=internal'
# RFC 2252 to https://technet.microsoft.com/en-us/library/cc961740.aspx
SYNTAX_MAP = {
'1.3.6.1.4.1.1466.115.121.1.7': ('2.5.5.8', 1), # boolean
'1.3.6.1.4.1.1466.115.121.1.12': ('2.5.5.1', 127), # DN
'1.3.6.1.4.1.1466.115.121.1.15': ('2.5.5.3', 27), # DirectoryString
'1.3.6.1.4.1.1466.115.121.1.26': ('2.5.5.5', 22), # IA5String
'1.3.6.1.4.1.1466.115.121.1.27': ('2.5.5.9', 10), # Integer
}
obj = None
for line in sys.stdin:
if re.match(r'^\s*(#|$)', line): continue
m = re.match(r'^attributetype\s+\(\s+(\S+)', line)
if m:
obj = OrderedDict([
('objectClass', ['top', 'attributeSchema']),
('attributeID', m.group(1)),
('isSingleValued', 'FALSE'),
])
continue
m = re.match(r'^objectclass\s+\(\s+(\S+)', line)
if m:
obj = OrderedDict([
('objectClass', ['top', 'classSchema']),
('governsID', m.group(1)),
])
continue
m = re.match(r'^\s*NAME\s+[\'"](.+)[\'"]', line)
if m:
obj.update([
('cn', m.group(1)),
('name', m.group(1)),
('lDAPDisplayName', m.group(1)),
])
continue
m = re.match(r'^\s*DESC\s+[\'"](.+)[\'"]', line)
if m:
obj.update([
('description', m.group(1)),
])
continue
m = re.match(r'^\s*(EQUALITY|SUBSTR)\s+(\S+)', line)
if m:
# Not supported by AD?
# https://technet.microsoft.com/en-us/library/cc961575.aspx
continue
m = re.match(r'^\s*SYNTAX\s+(\S+)', line)
if m:
obj.update([
('attributeSyntax', SYNTAX_MAP[m.group(1)][0]),
('oMSyntax', SYNTAX_MAP[m.group(1)][1]),
])
continue
if re.match(r'^\s*SINGLE-VALUE', line):
obj.update([
('isSingleValued', 'TRUE'),
])
continue
if re.match(r'^\s*AUXILIARY', line):
# https://msdn.microsoft.com/en-us/library/ms679014(v=vs.85).aspx
# https://technet.microsoft.com/en-us/library/2008.05.schema.aspx
obj.update([
('objectClassCategory', '3'),
])
continue
if re.match(r'^\s*STRUCTURAL', line):
obj.update([
('objectClassCategory', '1'),
])
continue
m = re.match(r'^\s*SUP\s+(\S+)', line)
if m:
obj.update([
('subClassOf', m.group(1)),
])
continue
m = re.match(r'^\s*(MAY|MUST)\s+\((.*)\)\s*$', line)
if m:
attrs = m.group(2).split('$')
obj.update([
('%sContain' % m.group(1).lower(), [v.strip() for v in attrs]),
])
continue
m = re.match(r'^\s*(MAY|MUST)\s+(\w+)\s*$', line)
if m:
obj.update([
('%sContain' % m.group(1).lower(), m.group(2)),
])
continue
if re.match(r'^\s*\)', line) and obj:
print("dn: CN=%s,CN=Schema,CN=Configuration,%s" % (obj['cn'], BASEDN))
print("changetype: add")
for k in obj:
if type(obj[k]) == list:
for v in obj[k]:
print("%s: %s" % (k, v))
else:
print("%s: %s" % (k, obj[k]))
print()
obj = None
continue
print("??? %s" % line, file=sys.stderr)
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