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# 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 ldap
import urllib2
import uuid
import json
from ConfigParser import ConfigParser
config = ConfigParser()
config.read('ldap_sync.conf')
class InvalidResponseIDError(Exception):
''' Request and response don't have the same UUID. '''
class RhodecodeResponseError(Exception):
''' Response has an error, something went wrong with request execution. '''
class UserAlreadyInGroupError(Exception):
''' User is already a member of the target group. '''
class UserNotInGroupError(Exception):
''' User is not a member of the target group. '''
class RhodecodeAPI():
def __init__(self, url, key):
self.url = url
self.key = key
def get_api_data(self, id, method, args):
"""Prepare dict for API post."""
return {
"id": id,
"api_key": self.key,
"method": method,
"args": args
}
def rhodecode_api_post(self, method, args):
"""Send a generic API post to Rhodecode.
This will generate the UUID for validation check after the
response is returned. Handle errors and get the result back.
"""
id = str(uuid.uuid1())
data = self.get_api_data(id, method, args)
data = json.dumps(data)
headers = {'content-type': 'text/plain'}
req = urllib2.Request(self.url, data, headers)
response = urllib2.urlopen(req)
response = json.load(response)
if id != response["id"]:
raise InvalidResponseIDError("UUID does not match.")
if response["error"] != None:
raise RhodecodeResponseError(response["error"])
return response["result"]
def create_group(self, name, active=True):
"""Create the Rhodecode user group."""
args = {
"group_name": name,
"active": str(active)
}
self.rhodecode_api_post("create_users_group", args)
def add_membership(self, group, username):
"""Add specific user to a group."""
args = {
"usersgroupid": group,
"userid": username
}
result = self.rhodecode_api_post("add_user_to_users_group", args)
if not result["success"]:
raise UserAlreadyInGroupError("User %s already in group %s." %
(username, group))
def remove_membership(self, group, username):
"""Remove specific user from a group."""
args = {
"usersgroupid": group,
"userid": username
}
result = self.rhodecode_api_post("remove_user_from_users_group", args)
if not result["success"]:
raise UserNotInGroupError("User %s not in group %s." %
(username, group))
def get_group_members(self, name):
"""Get the list of member usernames from a user group."""
args = {"usersgroupid": name}
members = self.rhodecode_api_post("get_users_group", args)['members']
member_list = []
for member in members:
member_list.append(member["username"])
return member_list
def get_group(self, name):
"""Return group info."""
args = {"usersgroupid": name}
return self.rhodecode_api_post("get_users_group", args)
def get_user(self, username):
"""Return user info."""
args = {"userid": username}
return self.rhodecode_api_post("get_user", args)
class LdapClient():
def __init__(self, uri, user, key, base_dn):
self.client = ldap.initialize(uri, trace_level=0)
self.client.set_option(ldap.OPT_REFERRALS, 0)
self.client.simple_bind(user, key)
self.base_dn = base_dn
def __del__(self):
self.client.unbind()
def get_groups(self):
"""Get all the groups in form of dict {group_name: group_info,...}."""
searchFilter = "objectClass=groupOfUniqueNames"
result = self.client.search_s(self.base_dn, ldap.SCOPE_SUBTREE,
searchFilter)
groups = {}
for group in result:
groups[group[1]['cn'][0]] = group[1]
return groups
def get_group_users(self, groups, group):
"""Returns all the users belonging to a single group.
Based on the list of groups and memberships, returns all the
users belonging to a single group, searching recursively.
"""
users = []
for member in groups[group]["uniqueMember"]:
member = self.parse_member_string(member)
if member[0] == "uid":
users.append(member[1])
elif member[0] == "cn":
users += self.get_group_users(groups, member[1])
return users
def parse_member_string(self, member):
"""Parses the member string and returns a touple of type and name.
Unique member can be either user or group. Users will have 'uid' as
prefix while groups will have 'cn'.
"""
member = member.split(",")[0]
return member.split('=')
class LdapSync():
def __init__(self):
self.ldap_client = LdapClient(config.get("default", "ldap_uri"),
config.get("default", "ldap_user"),
config.get("default", "ldap_key"),
config.get("default", "base_dn"))
self.rhodecode_api = RhodecodeAPI(config.get("default", "api_url"),
config.get("default", "api_key"))
def update_groups_from_ldap(self):
"""Add all the groups from LDAP to Rhodecode."""
added = existing = 0
groups = self.ldap_client.get_groups()
for group in groups:
try:
self.rhodecode_api.create_group(group)
added += 1
except:
existing += 1
return added, existing
def update_memberships_from_ldap(self, group):
"""Update memberships in rhodecode based on the LDAP groups."""
groups = self.ldap_client.get_groups()
group_users = self.ldap_client.get_group_users(groups, group)
# Delete memberships first from each group which are not part
# of the group any more.
rhodecode_members = self.rhodecode_api.get_group_members(group)
for rhodecode_member in rhodecode_members:
if rhodecode_member not in group_users:
try:
self.rhodocode_api.remove_membership(group,
rhodecode_member)
except UserNotInGroupError:
pass
# Add memberships.
for member in group_users:
try:
self.rhodecode_api.add_membership(group, member)
except UserAlreadyInGroupError:
# TODO: handle somehow maybe..
pass
if __name__ == '__main__':
sync = LdapSync()
print sync.update_groups_from_ldap()
groups = sync.ldap_client.get_groups()
for group in groups:
# TODO: exception when user does not exist during add membership...
# How should we handle this.. Either sync users as well at this step,
# or just ignore those who don't exist. If we want the second case,
# we need to find a way to recognize the right exception (we always get
# RhodecodeResponseError with no error code so maybe by return msg (?)
sync.update_memberships_from_ldap(group)
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