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"""
"""
# Created on 2014.04.26
#
# Author: Giovanni Cannata
#
# Copyright 2015 Giovanni Cannata
#
# This file is part of ldap3.
#
# ldap3 is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ldap3 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with ldap3 in the COPYING and COPYING.LESSER files.
# If not, see <http://www.gnu.org/licenses/>.
from base64 import b64encode, b64decode
import datetime
from .. import SEQUENCE_TYPES
from ..utils.ciDict import CaseInsensitiveDict
from ..core.exceptions import LDAPDefinitionError
def escape_filter_chars(text):
""" Escape chars mentioned in RFC4515. """
output = text.replace('\\', r'\5c')
output = output.replace(r'*', r'\2a')
output = output.replace(r'(', r'\28')
output = output.replace(r')', r'\29')
output = output.replace('\x00', r'\00')
return output
def escape_bytes(bytes_value):
if bytes_value:
if str != bytes: # Python 3
if isinstance(bytes_value, str):
bytes_value = bytearray(bytes_value, encoding='utf-8')
escaped = '\\'.join([('%02x' % int(b)) for b in bytes_value])
else: # Python 2
if isinstance(bytes_value, unicode):
bytes_value = bytes_value.encode('utf-8')
escaped = '\\'.join([('%02x' % ord(b)) for b in bytes_value])
else:
escaped = ''
return ('\\' + escaped) if escaped else ''
def prepare_for_stream(value):
if str != bytes: # Python 3
return value
else: # Python 2
return value.decode()
def check_escape(raw_string):
if '\\' not in raw_string:
return raw_string
escaped = ''
i = 0
while i < len(raw_string):
if raw_string[i] == '\\' and i < len(raw_string) - 2:
try:
value = int(raw_string[i + 1: i + 3], 16)
escaped += chr(value)
i += 2
except ValueError:
escaped += '\\\\'
else:
escaped += raw_string[i]
i += 1
return escaped
def json_encode_b64(obj):
try:
return dict(encoding='base64', encoded=b64encode(obj))
except Exception as e:
raise LDAPDefinitionError('unable to encode ' + str(obj) + ' - ' + str(e))
# noinspection PyProtectedMember
def check_json_dict(json_dict):
# needed for python 2
for k, v in json_dict.items():
if isinstance(v, dict):
check_json_dict(v)
elif isinstance(v, CaseInsensitiveDict):
check_json_dict(v._store)
elif isinstance(v, SEQUENCE_TYPES):
for i, e in enumerate(v):
if isinstance(e, dict):
check_json_dict(e)
elif isinstance(e, CaseInsensitiveDict):
check_json_dict(e._store)
else:
v[i] = format_json(e)
else:
json_dict[k] = format_json(v)
def json_hook(obj):
if hasattr(obj, 'keys') and len(list(obj.keys())) == 2 and 'encoding' in obj.keys() and 'encoded' in obj.keys():
return b64decode(obj['encoded'])
return obj
# noinspection PyProtectedMember
def format_json(obj):
if isinstance(obj, CaseInsensitiveDict):
return obj._store
if isinstance(obj, datetime.datetime):
return str(obj)
if isinstance(obj, int):
return obj
if str == bytes:
if isinstance(obj, long): # long exists only in python2
return obj
try:
if str != bytes: # python3
if isinstance(obj, bytes):
return check_escape(str(obj, 'utf-8', errors='strict'))
raise LDAPDefinitionError('unable to serialize ' + str(obj))
else: # python2
if isinstance(obj, unicode):
return obj
else:
return unicode(check_escape(obj))
except (TypeError, UnicodeDecodeError):
pass
try:
return json_encode_b64(bytes(obj))
except Exception:
pass
raise LDAPDefinitionError('unable to serialize ' + str(obj))
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