A fast and versatile LDAP editor

This is a minimal web interface for LDAP directories. Docker images for linux/amd64 and linux/arm64/v8 are available.

Features:

• Directory tree view
• Entry creation / modification / deletion
• LDIF import / export
• Image support for the jpegPhoto and thumbnailPhoto attributes
• Schema aware
• Simple search (configurable)
• Asynchronous LDAP backend with decent scalability
• Available as Docker image

The app always requires authentication, even if the directory permits anonymous access. User credentials are validated through a simple bind on the directory (SASL is not supported). What a particular user can see (and edit) is governed entirely by directory access rules. The app shows the directory contents, nothing less, nothing more.

Usage

Environment variables

LDAP access is controlled by the following optional environment variables, possibly from a .env file:

• LDAP_URL: Connection URL in RFC 4516 format, defaults to ldap:///.
• BASE_DN: Optional search base, e.g. dc=example,dc=org, can also be specified as part of the LDAP_URL.
• SCHEMA_DN: Optional DN to obtain the directory schema, e.g. cn=subSchema.
• LOGIN_ATTR: User name attribute, defaults to uid.
• USE_TLS: Enable TLS, defaults to true for ldaps connections. Set it to a non-empty string to force STARTTLS on ldap connections.

If BASE_DN or SCHEMA_DN are not provided explicitly, auto-detection from the root DSA is attempted. For this, the root DSA must be readable anonymously, e.g. with the following ACL line for OpenLDAP:

access to dn.base="" by * read

For finer-grained control, see settings.py.

Docker

For the impatient: Run it with

docker run -p 127.0.0.1:5000:5000 \
    -e LDAP_URL=ldap://your.openldap.server/ \
    dnknth/ldap-ui:latest

For the even more impatient: Start a demo with

docker compose up -d

and go to http://localhost:5000/. You are automatically logged in as Fred Flintstone.

Pip

Install ldap-ui in a virtual environment:

python3 -m venv .venv
source .venv/bin/activate
pip3 install ldap-ui

After a shell rehash (if needed), the command ldap-ui becomes available:

Usage: ldap-ui [OPTIONS]

Options:
  -b, --base-dn TEXT              LDAP base DN. Required unless the BASE_DN
                                  environment variable is set.
  -h, --host TEXT                 Bind socket to this host.  [default:
                                  127.0.0.1]
  -p, --port INTEGER              Bind socket to this port. If 0, an available
                                  port will be picked.  [default: 5000]
  -l, --log-level [critical|error|warning|info|debug|trace]
                                  Log level. [default: info]
  --version                       Display the current version and exit.
  --help                          Show this message and exit.

Development

Prerequisites:

• node.js LTS version with NPM
• pnpm
• Python ≥ 3.10
• uv
• GNU make

ldap-ui consists of a Vue frontend and a Python backend that translates a subset of the LDAP protocol to a stateless ReST API.

pnpm build assembles the frontend in backend/ldap_ui/statics.

Review the configuration in settings.py. It is short and mostly self-explanatory (also see notes below). Most settings can (and should) be overridden by environment variables or settings in a .env file; see env.demo or env.example.

Run the backend locally:

• make — installs dependencies, builds the frontend if needed, and starts the server.
• make debug — starts the server in reload mode on port 5000 with DEBUG=true.

The frontend can be developed independently with hot-reload support using pnpm dev.

Notes

Authentication methods

The UI always uses a simple bind operation to authenticate with the LDAP directory. How the bind DN is obtained from a given user name depends on a combination of OS environment variables, possibly from a .env file:

1. Search by some attribute. By default, this is the uid, which can be overridden by the environment variable LOGIN_ATTR, e.g. LOGIN_ATTR=cn.
2. If the environment variable BIND_PATTERN is set, then no search is performed. Login with a full DN can be configured with BIND_PATTERN=%s, which for example allows to login as user cn=admin,dc=example,dc=org. If a partial DN like BIND_PATTERN=%s,dc=example,dc=org is configured, the corresponding login would be cn=admin. If a specific pattern like BIND_PATTERN=cn=%s,dc=example,dc=org is configured, the login name is just admin.
3. If security is no concern, then a fixed BIND_DN and BIND_PASSWORD can be set in the environment. This is for demo purposes only, and probably a very bad idea if access to the UI is not restricted by any other means.

Searching

Search uses a configurable set of criteria (default: cn, gn, sn, and uid) if the query does not contain =. Wildcards are supported, e.g. f* will match all cn, gn, sn, and uid starting with f. Additionally, arbitrary attributes can be searched with an LDAP filter specification, for example sn=F*.

Apart from the search field in the navigation bar, searches are also performed in the entry editor for any DN-valued input field.

Keyboard navigation

The editor and modal dialogs focus the first input when opening, so you can use the ⇥ key to navigate the form. Save or dismiss with the ↩ key.

The following access keys are defined:

Caveats

• The software works with OpenLDAP using simple bind. Other directories have not been tested much, although 389 DS works to some extent.
• SASL authentication schemes are presently not supported.
• Passwords are transmitted as plain text. The LDAP server is expected to hash them (OpenLDAP 2.4 does). I strongly recommend to expose the app through a TLS-enabled web server.
• HTTP Basic Authentication is triggered unless the AUTHORIZATION request variable is already set by some upstream HTTP server.

Q&A

• Q: Why are some fields not editable?
  • A: The RDN of an entry is read-only. To change it, rename the entry with a different RDN, then change the old RDN and rename back. To change passwords, click on the question mark icon on the right side. Binary fields (as per schema) are read-only. You do not want to modify them accidentally.
• Q: Why did you write this?
  • A: PHPLdapAdmin is no longer actively maintained. I needed a replacement, and wanted to try Vue.

Acknowledgements

The Python backend uses FastAPI. The UI is built with Vue.js and Tailwind CSS. Kudos to the authors of these elegant frameworks!