spaceport/ldapserver/ldap_functions.py

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from log import logger
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import time
import ldap
import ldap.modlist as modlist
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import secrets
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import base64
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from flask import abort
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HTTP_NOTFOUND = 404
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ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, ldap.OPT_X_TLS_NEVER)
ldap.set_option(ldap.OPT_X_TLS_CACERTFILE, secrets.LDAP_CERTFILE)
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def init_ldap():
ldap_conn = ldap.initialize(secrets.LDAP_URL)
ldap_conn.set_option(ldap.OPT_REFERRALS, 0)
ldap_conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
ldap_conn.set_option(ldap.OPT_X_TLS,ldap.OPT_X_TLS_DEMAND)
ldap_conn.set_option(ldap.OPT_X_TLS_DEMAND, True)
ldap_conn.set_option(ldap.OPT_DEBUG_LEVEL, 255)
return ldap_conn
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def convert(data):
if isinstance(data, dict):
return {convert(key): convert(value) for key, value in data.items()}
elif isinstance(data, (list, tuple)):
if len(data) == 1:
return convert(data[0])
else:
return [convert(element) for element in data]
elif isinstance(data, (bytes, bytearray)):
try:
return data.decode()
except UnicodeDecodeError:
return data.hex()
else:
return data
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def find_user(query):
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'''
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Search for a user by sAMAccountname or email
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'''
ldap_conn = init_ldap()
try:
logger.info('Looking up user ' + query)
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
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criteria = '(&(objectClass=user)(|(mail={})(sAMAccountName={}))(!(objectClass=computer)))'.format(query, query)
results = ldap_conn.search_s(secrets.BASE_MEMBERS, ldap.SCOPE_SUBTREE, criteria, ['displayName','sAMAccountName','email'])
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logger.info(' Results: ' + str(results))
if len(results) != 1:
abort(HTTP_NOTFOUND)
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return results[0][0]
finally:
ldap_conn.unbind()
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def find_dn(dn):
'''
Search for a user by dn
'''
ldap_conn = init_ldap()
try:
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logger.info('Finding user for dn: ' + dn)
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
criteria = '(&(objectClass=user)(!(objectClass=computer)))'
results = ldap_conn.search_s(dn, ldap.SCOPE_SUBTREE, criteria, ['sAMAccountName'])
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logger.info(' Results: ' + str(results))
return results[0][1]['sAMAccountName'][0].decode()
finally:
ldap_conn.unbind()
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def create_user(first, last, username, email, password):
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'''
Create a User; required data is first, last, email, username, password
Note: this creates a disabled user, then sets a password, then enables the user
'''
ldap_conn = init_ldap()
try:
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logger.info('Creating user: ' + username)
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
dn = 'CN={} {},{}'.format(first, last, secrets.BASE_MEMBERS)
full_name = '{} {}'.format(first, last)
ldif = [
('objectClass', [b'top', b'person', b'organizationalPerson', b'user']),
('cn', [full_name.encode()]),
('userPrincipalName', [username.encode()]),
('sAMAccountName', [username.encode()]),
('givenName', [first.encode()]),
('sn', [last.encode()]),
('DisplayName', [full_name.encode()]),
('userAccountControl', [b'514']),
('mail', [email.encode()]),
('company', [b'Spaceport']),
]
result = ldap_conn.add_s(dn, ldif)
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logger.info(' Result: ' + result)
# set password
pass_quotes = '"{}"'.format(password)
pass_uni = pass_quotes.encode('utf-16-le')
change_des = [(ldap.MOD_REPLACE, 'unicodePwd', [pass_uni])]
result = ldap_conn.modify_s(dn, change_des)
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logger.info(' Result: ' + result)
# 512 will set user account to enabled
mod_acct = [(ldap.MOD_REPLACE, 'userAccountControl', b'512')]
result = ldap_conn.modify_s(dn, mod_acct)
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logger.info(' Result: ' + result)
finally:
ldap_conn.unbind()
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def set_password(username, password):
ldap_conn = init_ldap()
try:
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logger.info('Setting password for: ' + username)
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
criteria = '(&(objectClass=user)(sAMAccountName={})(!(objectClass=computer)))'.format(username)
results = ldap_conn.search_s(secrets.BASE_MEMBERS, ldap.SCOPE_SUBTREE, criteria, ['displayName','sAMAccountName','email'] )
if len(results) != 1:
abort(HTTP_NOTFOUND)
dn = results[0][0]
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logger.info(' Dn found: ' + dn)
# set password
pass_quotes = '"{}"'.format(password)
pass_uni = pass_quotes.encode('utf-16-le')
change_des = [(ldap.MOD_REPLACE, 'unicodePwd', [pass_uni])]
result = ldap_conn.modify_s(dn, change_des)
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logger.info(' Set password result: ' + str(result))
finally:
ldap_conn.unbind()
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def find_group(groupname):
'''
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Search for a group by name or sAMAccountname
'''
ldap_conn = init_ldap()
try:
logger.info('Looking up group ' + groupname)
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
criteria = '(&(objectClass=group)(sAMAccountName={}))'.format(groupname)
results = ldap_conn.search_s(secrets.BASE_GROUPS, ldap.SCOPE_SUBTREE, criteria, ['name','groupType'] )
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logger.info(' Results: ' + str(results))
if len(results) != 1:
abort(HTTP_NOTFOUND)
return results[0][0]
finally:
ldap_conn.unbind()
def create_group(groupname, description):
'''
Create a Group; required data is sAMAccountName, Description
'''
ldap_conn = init_ldap()
try:
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
dn = 'CN={},{}'.format(groupname, secrets.BASE_GROUPS)
ldif = [
('objectClass', [b'top', b'group']),
('cn', [groupname.encode()]),
('DisplayName', [groupname.encode()]),
('description', [description.encode()]),
('sAMAccountName', [groupname.encode()])
]
rcode = ldap_conn.add_s(dn, ldif)
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return rcode
finally:
ldap_conn.unbind()
def add_to_group(groupname, username):
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'''
Add a user to a Group; required data is GroupName, Username
'''
ldap_conn = init_ldap()
try:
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logger.info('Adding ' + username + ' to group: ' + groupname)
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ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
user_dn = find_user(username)
group_dn = find_group(groupname)
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if not is_member(groupname, username):
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mod_acct = [(ldap.MOD_ADD, 'member', user_dn.encode())]
ldap_conn.modify_s(group_dn, mod_acct)
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logger.info(' Added.')
return True
else:
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logger.info(' Already a member, skipping.')
return False
finally:
ldap_conn.unbind()
def remove_from_group(groupname, username):
'''
Remove a user from a Group; required data is GroupName, Username
'''
ldap_conn = init_ldap()
try:
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
user_dn = find_user(username)
group_dn = find_group(groupname)
if is_member(groupname, username):
mod_acct = [(ldap.MOD_DELETE, 'member', user_dn.encode())]
ldap_conn.modify_s(group_dn, mod_acct)
return True
else:
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logger.info('Not a member, skipping')
return False
finally:
ldap_conn.unbind()
def list_group(groupname):
'''
List users in a Group; required data is GroupName
'''
ldap_conn = init_ldap()
try:
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
group_dn = find_group(groupname)
criteria = '(&(objectClass=group)(sAMAccountName={}))'.format(groupname)
results = ldap_conn.search_s(secrets.BASE_GROUPS, ldap.SCOPE_SUBTREE, criteria, ['member'])
members_tmp = results[0][1]
members = members_tmp.get('member', [])
return [find_dn(dn.decode()) for dn in members]
finally:
ldap_conn.unbind()
def is_member(groupname, username):
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'''
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Checks to see if a user is a member of a group
'''
ldap_conn = init_ldap()
try:
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logger.info('Checking if ' + username + ' is in group: ' + groupname)
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
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group_dn = find_group(groupname)
user_dn = find_user(username).encode()
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memflag = False
criteria = '(&(objectClass=group)(sAMAccountName={}))'.format(groupname)
results = ldap_conn.search_s(secrets.BASE_GROUPS, ldap.SCOPE_SUBTREE, criteria, ['member'] )
members_tmp = results[0][1]
members = members_tmp.get('member', [])
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result = user_dn in members
logger.info(' Result: ' + str(result))
return result
finally:
ldap_conn.unbind()
def dump_users():
'''
Dump all AD users
'''
ldap_conn = init_ldap()
try:
ldap_conn.simple_bind_s(secrets.LDAP_USERNAME, secrets.LDAP_PASSWORD)
criteria = '(&(objectClass=user)(objectGUID=*))'
attributes = ['cn', 'sAMAccountName', 'mail', 'displayName', 'givenName', 'name', 'sn', 'logonCount', 'objectGUID']
results = ldap_conn.search_s(secrets.BASE_MEMBERS, ldap.SCOPE_SUBTREE, criteria, attributes)
results = convert(results)
output = {}
for r in results:
tmp = r[1]
tmp['dn'] = r[0]
output[r[1]['sAMAccountName']] = tmp
import json
return json.dumps(output, indent=4)
finally:
ldap_conn.unbind()
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# ===========================================================================
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#guid = '\\b4\\51\\1adce6709c449bd21a812c423e82'
#guid = ''.join(['\\%s' % guid[i:i+2] for i in range(0, len(guid), 2)])
#print(guid)
#criteria = '(&(objectClass=user)(objectGUID={}))'.format(guid)
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if __name__ == '__main__':
pass
#print(create_user('Elon', 'Tusk', 'elon.tusk', 'elont@example.com', 'protospace*&^g87g6'))
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#print(find_user('tanner.collin'))
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#print(set_password('tanner.collin', 'Supersecret@@'))
#print(find_dn('CN=Tanner Collin,OU=MembersOU,DC=ps,DC=protospace,DC=ca'))
#print("============================================================")
#print(create_group("newgroup", "new group"))
#print(" ============== ")
#print(list_group("Laser Users"))
#print(" ============== ")
#print(is_member('newgroup','tanner.collin'))
#print(" ============== ")
#print(add_to_group('newgroup','tanner.collin'))
#print(" ============== ")
#print(list_group("newgroup"))
#print(" ============== ")
#print(remove_from_group('newgroup','tanner.collin'))
#print(" ============== ")
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print(list_group('Trotec Users'))
#print(dump_users())
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#users = list_group('Laser Users')
#import json
#print(json.dumps(users, indent=4))