friendica/mod/removeme.php

<?php
/**
 * @file mod/removeme.php
 */

use Friendica\App;
use Friendica\Core\Renderer;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\User;
use Friendica\Util\Strings;

function removeme_post(App $a)
{
	if (!local_user()) {
		return;
	}

	if (!empty($_SESSION['submanage'])) {
		return;
	}

	if (empty($_POST['qxz_password'])) {
		return;
	}

	if (empty($_POST['verify'])) {
		return;
	}

	if ($_POST['verify'] !== $_SESSION['remove_account_verify']) {
		return;
	}

	// send notification to admins so that they can clean um the backups
	// send email to admins
	$admin_mails = explode(",", str_replace(" ", "", DI::config()->get('config', 'admin_email')));
	foreach ($admin_mails as $mail) {
		$admin = DBA::selectFirst('user', ['uid', 'language', 'email', 'username'], ['email' => $mail]);
		if (!DBA::isResult($admin)) {
			continue;
		}

		$email = DI::emailer()
		           ->newSystemMail(DI::app(), (!empty($admin['language'])) ? DI::l10n()->withLang($admin['language']) : DI::l10n()->withLang('en'))
		           ->withMessage(DI::l10n()->t('[Friendica System Notify]') . ' ' . DI::l10n()->t('User deleted their account'),
			           DI::l10n()->t('On your Friendica node an user deleted their account. Please ensure that their data is removed from the backups.'),
			           DI::l10n()->t('The user id is %d', local_user()))
		           ->forUser($admin['uid'] ?? 0)
		           ->withRecipient($admin['email'])
		           ->build();
		DI::emailer()->send($email);
	}

	if (User::getIdFromPasswordAuthentication($a->user, trim($_POST['qxz_password']))) {
		User::remove($a->user['uid']);

		unset($_SESSION['authenticated']);
		unset($_SESSION['uid']);
		DI::baseUrl()->redirect();
		// NOTREACHED
	}
}

function removeme_content(App $a)
{
	if (!local_user()) {
		DI::baseUrl()->redirect();
	}

	$hash = Strings::getRandomHex();

	require_once("mod/settings.php");
	settings_init($a);

	$_SESSION['remove_account_verify'] = $hash;

	$tpl = Renderer::getMarkupTemplate('removeme.tpl');
	$o = Renderer::replaceMacros($tpl, [
		'$basedir' => DI::baseUrl()->get(),
		'$hash' => $hash,
		'$title' => DI::l10n()->t('Remove My Account'),
		'$desc' => DI::l10n()->t('This will completely remove your account. Once this has been done it is not recoverable.'),
		'$passwd' => DI::l10n()->t('Please enter your password for verification:'),
		'$submit' => DI::l10n()->t('Remove My Account')
	]);

	return $o;
}