path: root/Zotlabs/Module/Regdir.php

<?php
namespace Zotlabs\Module;

/**
 * With args, register a directory server for this realm.
 * With no args, return a JSON array of directory servers for this realm.
 *
 * @FIXME Not yet implemented: Some realms may require authentication to join their realm.
 * The RED_GLOBAL realm does not require authentication.
 * We would then need a flag in the site table to indicate that they've been
 * validated by the PRIMARY directory for that realm. Sites claiming to be PRIMARY
 * but are not the realm PRIMARY will be marked invalid.
 * 
 * @param App &$a
 */

class Regdir extends \Zotlabs\Web\Controller {

	function init() {
	
		$result = array('success' => false);
	
		$url = $_REQUEST['url'];
		$access_token = $_REQUEST['t'];
		$valid = 0;
	
		// we probably don't need the realm as we will find out in the probe.
		// What we may want to die is throw an error if you're trying to register in a different realm
		// so this configuration issue can be discovered.
	
		$realm = $_REQUEST['realm'];
		if(! $realm)
			$realm = DIRECTORY_REALM;
	
		if($realm === DIRECTORY_REALM) {
			$valid = 1;
		} else {
			$token = get_config('system','realm_token');
			if($token && $access_token != $token) {
				$result['message'] = 'This realm requires an access token';
				return;
			}
			$valid = 1;
		}
	
		$dirmode = intval(get_config('system','directory_mode'));
	
		if ($dirmode == DIRECTORY_MODE_NORMAL) {
			$ret['message'] = t('This site is not a directory server');
			json_return_and_die($ret);
		}
	
		$m = null;
		if ($url) {
			$m = parse_url($url);
	
			if ((! $m) || ((! @dns_get_record($m['host'], DNS_A + DNS_CNAME + DNS_PTR)) && (! filter_var($m['host'], FILTER_VALIDATE_IP) ))) {
	
				$result['message'] = 'unparseable url';
				json_return_and_die($result);
			}
	
			$j = \Zotlabs\Zot\Finger::run('[system]@' . $m['host']);
			if($j['success'] && $j['guid']) {
				$x = import_xchan($j);
				if($x['success']) {
					$result['success'] = true;
				}
			}
	
			if(! $result['success'])
				$valid = 0;
	
			q("update site set site_valid = %d where site_url = '%s' limit 1",
				intval($valid),
				strtolower($url)
			);
	
			json_return_and_die($result);
		} else {
	
			// We can put this in the sql without the condition after 31 august 2015 assuming
			// most directory servers will have updated by then
			// This just makes sure it happens if I forget
	
			$sql_extra = ((datetime_convert() > datetime_convert('UTC','UTC','2015-08-31')) ? ' and site_valid = 1 ' : '' );
			if ($dirmode == DIRECTORY_MODE_STANDALONE) {
				$r = array(array('site_url' => z_root()));
			} else {
				$r = q("select site_url from site where site_flags in ( 1, 2 ) and site_realm = '%s' and site_type = %d $sql_extra ",
					dbesc(get_directory_realm()),
					intval(SITE_TYPE_ZOT)
				);
			}
			if ($r) {
				$result['success'] = true;
				$result['directories'] = array();
				foreach ($r as $rr)
					$result['directories'][] = $rr['site_url'];
	
				json_return_and_die($result);
			}
		}
		json_return_and_die($result);
	}
}