atomic-production-safeguard.php

<?php
/**
 * This code's purpose is to ensure that any clones of a
 *  site hosted on Atomic are run safely so that processes
 *  meant to happen only on production (emailing customers,
 *  api calls, cron jobs, etc) are properly removed and that
 *  Safety Net is appropriately configured.
 */

$cached_ATOMIC_SITE_ID = get_option( 'team51_ATOMIC_SITE_ID' );

if ( empty( $cached_ATOMIC_SITE_ID ) ) {
	// Nothing was cached in the options table.
	// Either the option was deleted, or this code was just added.

	if ( empty( $_SERVER['ATOMIC_SITE_ID'] ) ) {
		// The code is not running in an Atomic Environment, and
		// there is no record of it having run under Atomic in
		// the past.  Just return out of this file and do nothing!
		return;
	}

	// If we have an ATOMIC_SITE_ID but it isn't cached in our
	// options table, then just write it to the options table and
	// carry on with loading the site.
	update_option( 'team51_ATOMIC_SITE_ID', $_SERVER['ATOMIC_SITE_ID'] );
	return;
} elseif ( empty( $_SERVER['ATOMIC_SITE_ID'] ) || $_SERVER['ATOMIC_SITE_ID'] !== $cached_ATOMIC_SITE_ID ) {
	// We have a cached site id from the options table (as we passed
	// the first conditional), but there is no site id environment
	// variable, or there is and it is different than the cached
	// site id -- WordPress is running in an unexpected environment.

	// Check for Safety Net being active and having run? If we exit
	// here, perhaps exit with a form for cli / html that prompts the
	// user to install Safety Net and run it. Killing execution here,
	// early, will prevent WordPress from doing dangerous actions from
	// a development environment unintentionally.

	wp_die( 'It looks like this site is running in an unexpected environment. ' .
			'Please run Safety Net to make sure all personal information is ' .
			'sanitized, the Jetpack connection is reset, outbound email is ' .
			'gagged appropriately, and Production API keys are purged.' );
}