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# Create DisplaySpecifiers LDIF (as a string) from the documents provided by
# Microsoft under the WSPP.
#
# Copyright (C) Andrew Kroeger <andrew@id10ts.net> 2009
#
# Based on ms_schema.py
#
# 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/>.
import re
def __read_folded_line(f, buffer):
"""Read a line from an LDIF file, unfolding it"""
line = buffer
while True:
l = f.readline()
if l[:1] == " ":
# continued line
# cannot fold an empty line
assert(line != "" and line != "\n")
# preserves '\n '
line = line + l
else:
# non-continued line
if line == "":
line = l
if l == "":
# eof, definitely won't be folded
break
else:
# marks end of a folded line
# line contains the now unfolded line
# buffer contains the start of the next possibly folded line
buffer = l
break
return (line, buffer)
# Only compile regexp once.
# Will not match options after the attribute type.
attr_type_re = re.compile("^([A-Za-z][A-Za-z0-9-]*):")
def __read_raw_entries(f):
"""Read an LDIF entry, only unfolding lines"""
buffer = ""
while True:
entry = []
while True:
(l, buffer) = __read_folded_line(f, buffer)
if l[:1] == "#":
continue
if l == "\n" or l == "":
break
m = attr_type_re.match(l)
if m:
if l[-1:] == "\n":
l = l[:-1]
entry.append(l)
else:
print >>sys.stderr, "Invalid line: %s" % l,
sys.exit(1)
if len(entry):
yield entry
if l == "":
break
def fix_dn(dn):
"""Fix a string DN to use ${CONFIGDN}"""
if dn.find("<Configuration NC Distinguished Name>") != -1:
dn = dn.replace("\n ", "")
return dn.replace("<Configuration NC Distinguished Name>", "${CONFIGDN}")
else:
return dn
def __write_ldif_one(entry):
"""Write out entry as LDIF"""
out = []
for l in entry:
if l[2] == 0:
out.append("%s: %s" % (l[0], l[1]))
else:
# This is a base64-encoded value
out.append("%s:: %s" % (l[0], l[1]))
return "\n".join(out)
def __transform_entry(entry):
"""Perform required transformations to the Microsoft-provided LDIF"""
temp_entry = []
for l in entry:
t = []
if l.find("::") != -1:
# This is a base64-encoded value
t = l.split(":: ", 1)
t.append(1)
else:
t = l.split(": ", 1)
t.append(0)
key = t[0].lower()
if key == "changetype":
continue
if key == "distinguishedname":
continue
if key == "instancetype":
continue
if key == "name":
continue
if key == "cn":
continue
if key == "objectcategory":
continue
if key == "showinadvancedviewonly":
value = t[1].upper().lstrip().rstrip()
if value == "TRUE":
# Remove showInAdvancedViewOnly attribute if it is set to the
# default value of TRUE
continue
t[1] = fix_dn(t[1])
temp_entry.append(t)
entry = temp_entry
return entry
def read_ms_ldif(filename):
"""Read and transform Microsoft-provided LDIF file."""
out = []
f = open(filename, "rU")
for entry in __read_raw_entries(f):
out.append(__write_ldif_one(__transform_entry(entry)))
return "\n\n".join(out) + "\n\n"
if __name__ == '__main__':
import sys
try:
display_specifiers_file = sys.argv[1]
except IndexError:
print >>sys.stderr, "Usage: %s display-specifiers-ldif-file.txt" % (sys.argv[0])
sys.exit(1)
print read_ms_ldif(display_specifiers_file)
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