useradd.php

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<?php
elgg_make_sticky_form('useradd');

// Get variables
$username = get_input('username');
$password = get_input('password', null, false);
$password2 = get_input('password2', null, false);
$email = get_input('email');
$name = get_input('name');

// This param is not included in the useradd form by default,
// but it allows sites to easily add the feature if necessary.
$language = get_input('language', elgg_get_config('language'));

$admin = get_input('admin');
if (is_array($admin)) {
    $admin = $admin[0];
}

$autogen_password = get_input('autogen_password');
if ($autogen_password) {
    $password = generate_random_cleartext_password();
    $password2 = $password;
}

// no blank fields
if ($username == '' || $password == '' || $password2 == '' || $email == '' || $name == '') {
    register_error(elgg_echo('register:fields'));
    forward(REFERER);
}

if (strcmp($password, $password2) != 0) {
    register_error(elgg_echo('RegistrationException:PasswordMismatch'));
    forward(REFERER);
}

// For now, just try and register the user
try {
    $guid = register_user($username, $password, $name, $email, TRUE);

    if ($guid) {
        $new_user = get_entity($guid);
        if ($new_user && $admin && elgg_is_admin_logged_in()) {
            $new_user->makeAdmin();
        }

        elgg_clear_sticky_form('useradd');

        $new_user->admin_created = TRUE;
        // @todo ugh, saving a guid as metadata!
        $new_user->created_by_guid = elgg_get_logged_in_user_guid();

        // The user language is set also by register_user(), but it defaults to
        // language of the current user (admin), so we need to fix it here.
        $new_user->language = $language;

        $subject = elgg_echo('useradd:subject', array(), $new_user->language);
        $body = elgg_echo('useradd:body', array(
            $name,
            elgg_get_site_entity()->name,
            elgg_get_site_entity()->url,
            $username,
            $password,
        ), $new_user->language);

        notify_user($new_user->guid, elgg_get_site_entity()->guid, $subject, $body, [
            'action' => 'useradd',
            'object' => $new_user,
            'password' => $password,
        ]);

        system_message(elgg_echo("adduser:ok", array(elgg_get_site_entity()->name)));
    } else {
        register_error(elgg_echo("adduser:bad"));
    }
} catch (RegistrationException $r) {
    register_error($r->getMessage());
}

forward(REFERER);