LDAP

The Lightweight Directory Access Protocol (LDAP) is an application protocol for accessing distributed directory information services. This plugin provide a bridge between the LDAP databases.

Usage

In this example, we will setup the plugin to be used in the SMTP SMTP Receiver service. First, create a connection pool to the LDAP database.

// /etc/vsmtp/smtp-receiver/services/db.rhai
// Import the plugin stored in the `plugins` directory.
import "plugins/libldap_plugin" as ldap;

export const directory = ldap::connect(#{
    // Url poiting to the database.
    url: "ldap://ds.example.com:1389 ",
    // Timeout allowed for each LDAP query.
    timeout: "1m",
    // Number of connections to open in the pool.
    connections: 10,
});

import "services/db" as db;

fn on_rcpt_to(ctx) {
    ctx.run([
        rule "check recipient in directory" || {
            let recipient = ctx.rcpt();
            let address = recipient.domain();
            let user = recipient.local_part();

            let results = db::directory.search(
                "ou=People,dc=example,dc=com",
                // Search the whole tree.
                "sub",
                // Match on the user id and address.
                `(|(uid=${user})(mail=${address}))`
                // Get all attributes from the entries.
                ["*"]
            );

            // Use the `results` variable to filter the
            // recipient.
        }
    ]);
}