Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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138 regels
4.8 KiB

<?php
use Friendica\App;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Database\DBA;
use Friendica\Model\Contact;
use Friendica\Protocol\OStatus;
use Friendica\Util\Strings;
use Friendica\Core\System;
function hub_return($valid, $body)
{
if ($valid) {
header($_SERVER["SERVER_PROTOCOL"] . ' 200 OK');
echo $body;
} else {
System::httpExit(404);
}
killme();
}
// when receiving an XML feed, always return OK
function hub_post_return()
{
System::httpExit(200);
}
function pubsub_init(App $a)
{
$nick = (($a->argc > 1) ? Strings::escapeTags(trim($a->argv[1])) : '');
$contact_id = (($a->argc > 2) ? intval($a->argv[2]) : 0 );
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
$hub_mode = Strings::escapeTags(trim(defaults($_GET, 'hub_mode', '')));
$hub_topic = Strings::escapeTags(trim(defaults($_GET, 'hub_topic', '')));
$hub_challenge = Strings::escapeTags(trim(defaults($_GET, 'hub_challenge', '')));
$hub_lease = Strings::escapeTags(trim(defaults($_GET, 'hub_lease_seconds', '')));
$hub_verify = Strings::escapeTags(trim(defaults($_GET, 'hub_verify_token', '')));
Logger::log('Subscription from ' . $_SERVER['REMOTE_ADDR'] . ' Mode: ' . $hub_mode . ' Nick: ' . $nick);
Logger::log('Data: ' . print_r($_GET,true), Logger::DATA);
$subscribe = (($hub_mode === 'subscribe') ? 1 : 0);
$owner = DBA::selectFirst('user', ['uid'], ['nickname' => $nick, 'account_expired' => false, 'account_removed' => false]);
if (!DBA::isResult($owner)) {
Logger::log('Local account not found: ' . $nick);
hub_return(false, '');
}
$condition = ['uid' => $owner['uid'], 'id' => $contact_id, 'blocked' => false, 'pending' => false];
if (!empty($hub_verify)) {
$condition['hub-verify'] = $hub_verify;
}
$contact = DBA::selectFirst('contact', ['id', 'poll'], $condition);
if (!DBA::isResult($contact)) {
Logger::log('Contact ' . $contact_id . ' not found.');
hub_return(false, '');
}
if (!empty($hub_topic) && !Strings::compareLink($hub_topic, $contact['poll'])) {
Logger::log('Hub topic ' . $hub_topic . ' != ' . $contact['poll']);
hub_return(false, '');
}
// We must initiate an unsubscribe request with a verify_token.
// Don't allow outsiders to unsubscribe us.
if (($hub_mode === 'unsubscribe') && empty($hub_verify)) {
Logger::log('Bogus unsubscribe');
hub_return(false, '');
}
if (!empty($hub_mode)) {
DBA::update('contact', ['subhub' => $subscribe], ['id' => $contact['id']]);
Logger::log($hub_mode . ' success for contact ' . $contact_id . '.');
}
hub_return(true, $hub_challenge);
}
}
function pubsub_post(App $a)
{
$xml = file_get_contents('php://input');
Logger::log('Feed arrived from ' . $_SERVER['REMOTE_ADDR'] . ' for ' . $a->cmd . ' with user-agent: ' . $_SERVER['HTTP_USER_AGENT']);
Logger::log('Data: ' . $xml, Logger::DATA);
$nick = (($a->argc > 1) ? Strings::escapeTags(trim($a->argv[1])) : '');
$contact_id = (($a->argc > 2) ? intval($a->argv[2]) : 0 );
$importer = DBA::selectFirst('user', [], ['nickname' => $nick, 'account_expired' => false, 'account_removed' => false]);
if (!DBA::isResult($importer)) {
hub_post_return();
}
$condition = ['id' => $contact_id, 'uid' => $importer['uid'], 'subhub' => true, 'blocked' => false];
$contact = DBA::selectFirst('contact', [], $condition);
if (!DBA::isResult($contact)) {
$author = OStatus::salmonAuthor($xml, $importer);
if (!empty($author['contact-id'])) {
$condition = ['id' => $author['contact-id'], 'uid' => $importer['uid'], 'subhub' => true, 'blocked' => false];
$contact = DBA::selectFirst('contact', [], $condition);
Logger::log('No record for ' . $nick .' with contact id ' . $contact_id . ' - using '.$author['contact-id'].' instead.');
}
if (!DBA::isResult($contact)) {
Logger::log('Contact ' . $author["author-link"] . ' (' . $contact_id . ') for user ' . $nick . " wasn't found - ignored. XML: " . $xml);
hub_post_return();
}
}
if (!in_array($contact['rel'], [Contact::SHARING, Contact::FRIEND]) && ($contact['network'] != Protocol::FEED)) {
Logger::log('Contact ' . $contact['id'] . ' is not expected to share with us - ignored.');
hub_post_return();
}
// We import feeds from OStatus, Friendica and ATOM/RSS.
/// @todo Check if Friendica posts really arrive here - otherwise we can discard some stuff
if (!in_array($contact['network'], [Protocol::OSTATUS, Protocol::DFRN, Protocol::FEED])) {
hub_post_return();
}
Logger::log('Import item for ' . $nick . ' from ' . $contact['nick'] . ' (' . $contact['id'] . ')');
$feedhub = '';
consume_feed($xml, $importer, $contact, $feedhub);
// do it a second time for DFRN so that any children find their parents.
if ($contact['network'] === Protocol::DFRN) {
consume_feed($xml, $importer, $contact, $feedhub);
}
hub_post_return();
}