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<?php
/**
* 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 &$a
*/
function regdir_init(&$a) {
$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);
}
$f = zot_finger('[system]@' . $m['host']);
if($f['success']) {
$j = json_decode($f['body'],true);
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' $sql_extra ",
dbesc(get_directory_realm())
);
}
if ($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);
}
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