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Project Description

django-python3-ldap provides a Django LDAP user authentication backend for Python 2 and 3.

Features

  • Authenticate users with an LDAP server.
  • Sync LDAP users with a local Django database.
  • Supports custom Django user models.
  • Works in Python 2 and 3!

Installation

  1. Install using pip install django-python3-ldap.
  2. Add 'django_python3_ldap' to your INSTALLED_APPS setting.
  3. Set your AUTHENTICATION_BACKENDS setting to ("django_python3_ldap.auth.LDAPBackend",)
  4. Configure the settings for your LDAP server (see Available settings, below).
  5. Optionally, run ./manage.py ldap_sync_users to perform an initial sync of LDAP users.
  6. Optionally, run ./manage.py ldap_promote <username> to grant superuser admin access to a given user.

Available settings

Note: The settings below show their default values. You only need to add settings to your settings.py file that you intend to override.

# The URL of the LDAP server.
LDAP_AUTH_URL = "ldap://localhost:389"

# Initiate TLS on connection.
LDAP_AUTH_USE_TLS = False

# The LDAP search base for looking up users.
LDAP_AUTH_SEARCH_BASE = "ou=people,dc=example,dc=com"

# The LDAP class that represents a user.
LDAP_AUTH_OBJECT_CLASS = "inetOrgPerson"

# User model fields mapped to the LDAP
# attributes that represent them.
LDAP_AUTH_USER_FIELDS = {
    "username": "uid",
    "first_name": "givenName",
    "last_name": "sn",
    "email": "mail",
}

# A tuple of django model fields used to uniquely identify a user.
LDAP_AUTH_USER_LOOKUP_FIELDS = ("username",)

# Path to a callable that takes a dict of {model_field_name: value},
# returning a dict of clean model data.
# Use this to customize how data loaded from LDAP is saved to the User model.
LDAP_AUTH_CLEAN_USER_DATA = "django_python3_ldap.utils.clean_user_data"

# Path to a callable that takes a user model and a dict of {ldap_field_name: [value]},
# and saves any additional user relationships based on the LDAP data.
# Use this to customize how data loaded from LDAP is saved to User model relations.
# For customizing non-related User model fields, use LDAP_AUTH_CLEAN_USER_DATA.
LDAP_AUTH_SYNC_USER_RELATIONS = "django_python3_ldap.utils.sync_user_relations"

# Path to a callable that takes a dict of {ldap_field_name: value},
# returning a list of [ldap_search_filter]. The search filters will then be AND'd
# together when creating the final search filter.
LDAP_AUTH_FORMAT_SEARCH_FILTERS = "django_python3_ldap.utils.format_search_filters"

# Path to a callable that takes a dict of {model_field_name: value}, and returns
# a string of the username to bind to the LDAP server.
# Use this to support different types of LDAP server.
LDAP_AUTH_FORMAT_USERNAME = "django_python3_ldap.utils.format_username_openldap"

# Sets the login domain for Active Directory users.
LDAP_AUTH_ACTIVE_DIRECTORY_DOMAIN = None

# The LDAP username and password of a user for authenticating the `ldap_sync_users`
# management command. Set to None if you allow anonymous queries.
LDAP_AUTH_CONNECTION_USERNAME = None
LDAP_AUTH_CONNECTION_PASSWORD = None

Microsoft Active Directory support

django-python3-ldap is configured by default to support login via OpenLDAP. To connect to a Microsoft Active Directory, add the following line to your settings file.

LDAP_AUTH_FORMAT_USERNAME = "django_python3_ldap.utils.format_username_active_directory"

If your Active Directory server requires a domain to be supplied with the username, then also specify:

LDAP_AUTH_ACTIVE_DIRECTORY_DOMAIN = "your_domain"

Can’t get authentication to work?

LDAP is a very complicated protocol. Enable logging (see below), and see what error messages the LDAP connection is throwing.

Logging

Print information about failed logins to your console by adding the following to your settings.py file.

LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "handlers": {
        "console": {
            "class": "logging.StreamHandler",
        },
    },
    "loggers": {
        "django_python3_ldap": {
            "handlers": ["console"],
            "level": "INFO",
        },
    },
}

Custom user filters

By default, any users within LDAP_AUTH_SEARCH_BASE and of the correct LDAP_AUTH_OBJECT_CLASS will be considered a valid user. You can apply further filtering by setting a custom LDAP_AUTH_FORMAT_SEARCH_FILTERS callable.

# settings.py
LDAP_AUTH_FORMAT_SEARCH_FILTERS = "path.to.your.custom_format_search_filters"

# pay/to/your.py
from django_python3_ldap.utils import format_search_filters

def custom_format_search_filters(ldap_fields):
    # Add in simple filters.
    ldap_fields["memberOf"] = "foo"
    # Call the base format callable.
    search_filters = format_search_filters(ldap_fields)
    # Advanced: apply custom LDAP filter logic.
    search_filters.append("(|(memberOf=groupA)(memberOf=GroupB))")
    # All done!
    return search_filters

The returned list of search filters will be AND’d together to make the final search filter.

How it works

When a user attempts to authenticate, a connection is made to the LDAP server, and the application attempts to bind using the provided username and password.

If the bind attempt is successful, the user details are loaded from the LDAP server and saved in a local Django User model. The local model is only created once, and the details will be kept updated with the LDAP record details on every login.

To perform a full sync of all LDAP users to the local database, run ./manage.py ldap_sync_users. This is not required, as the authentication backend will create users on demand. Syncing users has the advantage of allowing you to assign permissions and groups to the existing users using the Django admin interface.

Running ldap_sync_users as a background cron task is another optional way to keep all users in sync on a regular basis.

Support and announcements

Downloads and bug tracking can be found at the main project website.

More information

The django-python3-ldap project was developed by Dave Hall. You can get the code from the django-python3-ldap project site.

Dave Hall is a freelance web developer, based in Cambridge, UK. You can usually find him on the Internet in a number of different places:

Release History

Release History

0.9.11

This version

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0.9.10

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0.9.9

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0.9.8

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0.9.7

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0.9.5

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0.9.4

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0.9.3

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0.9.2

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0.9.1

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0.9.0

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Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django-python3-ldap-0.9.11.tar.gz (9.7 kB) Copy SHA256 Checksum SHA256 Source Nov 7, 2016

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