OStatus: Fixed communication issues with deleted contacts

include/items.php

@@ -290,7 +290,7 @@ function subscribe_to_hub($url, $importer, $contact, $hubmode = 'subscribe') {
 		return;
 	}
 
-	$push_url = Config::get('system','url') . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
+	$push_url = System::baseUrl() . '/pubsub/' . $r[0]['nickname'] . '/' . $contact['id'];
 
 	// Use a single verify token, even if multiple hubs
 	$verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : random_string());

index.php

@@ -72,7 +72,7 @@ if (!$install) {
 	if (Config::get('system', 'force_ssl') && ($a->get_scheme() == "http")
 		&& (intval(Config::get('system', 'ssl_policy')) == SSL_POLICY_FULL)
 		&& (substr(System::baseUrl(), 0, 8) == "https://")
-	) {
+		&& ($_SERVER['REQUEST_METHOD'] == 'GET')) {
 		header("HTTP/1.1 302 Moved Temporarily");
 		header("Location: " . System::baseUrl() . "/" . $a->query_string);
 		exit();

mod/pubsub.php

@@ -2,6 +2,7 @@
 
 use Friendica\App;
 use Friendica\Database\DBM;
+use Friendica\Protocol\OStatus;
 
 function hub_return($valid,$body) {
 
@@ -9,8 +10,7 @@ function hub_return($valid,$body) {
 		header($_SERVER["SERVER_PROTOCOL"] . ' 200 ' . 'OK');
 		echo $body;
 		killme();
-	}
+	} else {
-	else {
 		header($_SERVER["SERVER_PROTOCOL"] . ' 404 ' . 'Not Found');
 		killme();
 	}
@@ -35,14 +35,13 @@ function pubsub_init(App $a) {
 	$contact_id = (($a->argc > 2) ? intval($a->argv[2])       : 0 );
 
 	if ($_SERVER['REQUEST_METHOD'] === 'GET') {
-
 		$hub_mode      = ((x($_GET,'hub_mode'))          ? notags(trim($_GET['hub_mode']))          : '');
 		$hub_topic     = ((x($_GET,'hub_topic'))         ? notags(trim($_GET['hub_topic']))         : '');
 		$hub_challenge = ((x($_GET,'hub_challenge'))     ? notags(trim($_GET['hub_challenge']))     : '');
 		$hub_lease     = ((x($_GET,'hub_lease_seconds')) ? notags(trim($_GET['hub_lease_seconds'])) : '');
 		$hub_verify    = ((x($_GET,'hub_verify_token'))  ? notags(trim($_GET['hub_verify_token']))  : '');
 
-		logger('pubsub: Subscription from ' . $_SERVER['REMOTE_ADDR']);
+		logger('pubsub: Subscription from ' . $_SERVER['REMOTE_ADDR'] . ' Mode: ' . $hub_mode . ' Nick: ' . $nick);
 		logger('pubsub: data: ' . print_r($_GET,true), LOGGER_DATA);
 
 		$subscribe = (($hub_mode === 'subscribe') ? 1 : 0);
@@ -70,11 +69,12 @@ function pubsub_init(App $a) {
 			hub_return(false, '');
 		}
 
-		if ($hub_topic)
+		if ($hub_topic) {
 			if (!link_compare($hub_topic,$r[0]['poll'])) {
 				logger('pubsub: hub topic ' . $hub_topic . ' != ' . $r[0]['poll']);
 				// should abort but let's humour them.
 			}
+		}
 
 		$contact = $r[0];
 
@@ -89,12 +89,9 @@ function pubsub_init(App $a) {
 			logger('pubsub: unsubscribe success');
 		}
 
-		if ($hub_mode)
+		if ($hub_mode) {
-			$r = q("UPDATE `contact` SET `subhub` = %d WHERE `id` = %d",
+			dba::update('contact', ['subhub' => $subscribe], ['id' => $contact['id']]);
-				intval($subscribe),
+		}
-				intval($contact['id'])
-			);
-
  		hub_return(true, $hub_challenge);
 	}
 }
@@ -109,11 +106,6 @@ function pubsub_post(App $a) {
 	logger('pubsub: user-agent: ' . $_SERVER['HTTP_USER_AGENT'] );
 	logger('pubsub: data: ' . $xml, LOGGER_DATA);
 
-//	if(! stristr($xml,'<?xml')) {
-//		logger('pubsub_post: bad xml');
-//		hub_post_return();
-//	}
-
 	$nick       = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
 	$contact_id = (($a->argc > 2) ? intval($a->argv[2])       : 0 );
 
@@ -136,18 +128,25 @@ function pubsub_post(App $a) {
 	);
 
 	if (!DBM::is_result($r)) {
-		logger('pubsub: no contact record for "'.$nick.' ('.$contact_id.')" - ignored. '.$xml);
+		$author = OStatus::salmonAuthor($xml, $importer);
+		if (!empty($author['contact-id'])) {
+			$contact = dba::selectFirst('contact', [], ['id' => $author['contact-id']]);
+			if (!in_array($contact['rel'], [CONTACT_IS_SHARING, CONTACT_IS_FRIEND]) && ($contact['network'] != NETWORK_FEED)) {
+				logger('Contact ' . $author['contact-id'] . ' is not expected to share with us - ignored.');
 				hub_post_return();
 			}
-
+			logger('pubsub: no contact record for "'.$nick.' ('.$contact_id.')" - using '.$author['contact-id'].' instead.');
+		}
+	} else {
 		$contact = $r[0];
+	}
 
 	// we have no way to match Diaspora guid's with atom post id's and could get duplicates.
 	// we'll assume that direct delivery is robust (and this is a bad assumption, but the duplicates are messy).
 
-	if($r[0]['network'] === NETWORK_DIASPORA)
+	if ($r[0]['network'] === NETWORK_DIASPORA) {
 		hub_post_return();
-
+	}
 	$feedhub = '';
 
 	require_once('include/items.php');

src/Protocol/OStatus.php

@@ -246,14 +246,13 @@ class OStatus
 		$xpath->registerNamespace('ostatus', NAMESPACE_OSTATUS);
 		$xpath->registerNamespace('statusnet', NAMESPACE_STATUSNET);
 
-		$entries = $xpath->query('/atom:entry');
+		$contact = ["id" => 0];
 
-		foreach ($entries as $entry) {
+		// Fetch the first author
-			// fetch the author
+		$authordata = $xpath->query('//author')->item(0);
-			$author = self::fetchAuthor($xpath, $entry, $importer, $contact, true);
+		$author = self::fetchAuthor($xpath, $authordata, $importer, $contact, true);
 		return $author;
 	}
-	}
 
 	/**
 	 * @brief Read attributes from element