Fix fatal errors because of mixed data types

diff --git a/src/Network/Probe.php b/src/Network/Probe.php
index da6106a39a1708fe249f4769fde302a259040770..bd8b717779f61e2923e889cdad6b526939b20293 100644 (file)
--- a/src/Network/Probe.php
+++ b/src/Network/Probe.php
@@ -172,7 +172,7 @@ class Probe
                } elseif ($curlResult->isTimeout()) {
                        Logger::info('Probing timeout', ['url' => $ssl_url], Logger::DEBUG);
                        self::$istimeout = true;
-                       return false;
+                       return [];
                }
 
                if (!is_object($xrd) && !empty($url)) {
@@ -181,10 +181,10 @@ class Probe
                        if ($curlResult->isTimeout()) {
                                Logger::info('Probing timeout', ['url' => $url], Logger::DEBUG);
                                self::$istimeout = true;
-                               return false;
+                               return [];
                        } elseif ($connection_error && $ssl_connection_error) {
                                self::$istimeout = true;
-                               return false;
+                               return [];
                        }
 
                        $xml = $curlResult->getBody();
@@ -340,9 +340,9 @@ class Probe
                        }
                }
 
-               if (!is_array($webfinger["links"])) {
+               if (empty($webfinger["links"])) {
                        Logger::log("No webfinger links found for ".$uri, Logger::DEBUG);
-                       return false;
+                       return [];
                }
 
                $data = [];
@@ -397,7 +397,7 @@ class Probe
                        $ap_profile = ActivityPub::probeProfile($uri);
 
                        if (empty($data) || (!empty($ap_profile) && empty($network) && (($data['network'] ?? '') != Protocol::DFRN))) {
-                               $subscribe = $data['subscribe'];
+                               $subscribe = $data['subscribe'] ?? '';
                                $data = $ap_profile;
                                $data['subscribe'] = $subscribe;
                        } elseif (!empty($ap_profile)) {
@@ -928,15 +928,15 @@ class Probe
                $curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout, 'accept_content' => $type]);
                if ($curlResult->isTimeout()) {
                        self::$istimeout = true;
-                       return false;
+                       return [];
                }
                $data = $curlResult->getBody();
 
                $webfinger = json_decode($data, true);
-               if (is_array($webfinger)) {
+               if (!empty($webfinger)) {
                        if (!isset($webfinger["links"])) {
                                Logger::log("No json webfinger links for ".$url, Logger::DEBUG);
-                               return false;
+                               return [];
                        }
                        return $webfinger;
                }
@@ -945,13 +945,13 @@ class Probe
                $xrd = XML::parseString($data, true);
                if (!is_object($xrd)) {
                        Logger::log("No webfinger data retrievable for ".$url, Logger::DEBUG);
-                       return false;
+                       return [];
                }
 
                $xrd_arr = XML::elementToArray($xrd);
                if (!isset($xrd_arr["xrd"]["link"])) {
                        Logger::log("No XML webfinger links for ".$url, Logger::DEBUG);
-                       return false;
+                       return [];
                }
 
                $webfinger = [];
@@ -997,18 +997,18 @@ class Probe
                $curlResult = Network::curl($noscrape_url);
                if ($curlResult->isTimeout()) {
                        self::$istimeout = true;
-                       return false;
+                       return [];
                }
                $content = $curlResult->getBody();
                if (!$content) {
                        Logger::log("Empty body for ".$noscrape_url, Logger::DEBUG);
-                       return false;
+                       return [];
                }
 
                $json = json_decode($content, true);
                if (!is_array($json)) {
                        Logger::log("No json data for ".$noscrape_url, Logger::DEBUG);
-                       return false;
+                       return [];
                }
 
                if (!empty($json["fn"])) {
@@ -1218,7 +1218,7 @@ class Probe
                }
 
                if (!isset($data["network"]) || ($hcard_url == "")) {
-                       return false;
+                       return [];
                }
 
                // Fetch data via noscrape - this is faster
@@ -1255,23 +1255,23 @@ class Probe
                $curlResult = Network::curl($hcard_url);
                if ($curlResult->isTimeout()) {
                        self::$istimeout = true;
-                       return false;
+                       return [];
                }
                $content = $curlResult->getBody();
                if (!$content) {
-                       return false;
+                       return [];
                }
 
                $doc = new DOMDocument();
                if (!@$doc->loadHTML($content)) {
-                       return false;
+                       return [];
                }
 
                $xpath = new DomXPath($doc);
 
                $vcards = $xpath->query("//div[contains(concat(' ', @class, ' '), ' vcard ')]");
                if (!is_object($vcards)) {
-                       return false;
+                       return [];
                }
 
                if (!isset($data["baseurl"])) {
@@ -1409,7 +1409,7 @@ class Probe
                }
 
                if (empty($data["url"]) || empty($hcard_url)) {
-                       return false;
+                       return [];
                }
 
                if (!empty($webfinger["aliases"]) && is_array($webfinger["aliases"])) {
@@ -1430,7 +1430,7 @@ class Probe
                $data = self::pollHcard($hcard_url, $data);
 
                if (!$data) {
-                       return false;
+                       return [];
                }
 
                if (!empty($data["url"])
@@ -1450,7 +1450,7 @@ class Probe
                        $data["notify"] = $data["baseurl"] . "/receive/users/" . $data["guid"];
                        $data["batch"]  = $data["baseurl"] . "/receive/public";
                } else {
-                       return false;
+                       return [];
                }
 
                return $data;
@@ -1483,7 +1483,7 @@ class Probe
                        $data["addr"] = str_replace('acct:', '', $webfinger["subject"]);
                }
 
-               if (is_array($webfinger["links"])) {
+               if (!empty($webfinger["links"])) {
                        // The array is reversed to take into account the order of preference for same-rel links
                        // See: https://tools.ietf.org/html/rfc7033#section-4.4.4
                        foreach (array_reverse($webfinger["links"]) as $link) {
@@ -1509,7 +1509,7 @@ class Probe
                                                $curlResult = Network::curl($pubkey);
                                                if ($curlResult->isTimeout()) {
                                                        self::$istimeout = true;
-                                                       return false;
+                                                       return $short ? false : [];
                                                }
                                                $pubkey = $curlResult->getBody();
                                        }
@@ -1531,7 +1531,7 @@ class Probe
                ) {
                        $data["network"] = Protocol::OSTATUS;
                } else {
-                       return false;
+                       return $short ? false : [];
                }
 
                if ($short) {
@@ -1542,12 +1542,12 @@ class Probe
                $curlResult = Network::curl($data["poll"]);
                if ($curlResult->isTimeout()) {
                        self::$istimeout = true;
-                       return false;
+                       return [];
                }
                $feed = $curlResult->getBody();
                $feed_data = Feed::import($feed);
                if (!$feed_data) {
-                       return false;
+                       return [];
                }
 
                if (!empty($feed_data["header"]["author-name"])) {
@@ -1594,12 +1594,12 @@ class Probe
        {
                $curlResult = Network::curl($profile_link);
                if (!$curlResult->isSuccess()) {
-                       return false;
+                       return [];
                }
 
                $doc = new DOMDocument();
                if (!@$doc->loadHTML($curlResult->getBody())) {
-                       return false;
+                       return [];
                }
 
                $xpath = new DomXPath($doc);
@@ -1680,13 +1680,13 @@ class Probe
 
                        $data["network"] = Protocol::PUMPIO;
                } else {
-                       return false;
+                       return [];
                }
 
                $profile_data = self::pumpioProfileData($data["url"]);
 
                if (!$profile_data) {
-                       return false;
+                       return [];
                }
 
                $data = array_merge($data, $profile_data);
@@ -1859,20 +1859,20 @@ class Probe
                $curlResult = Network::curl($url);
                if ($curlResult->isTimeout()) {
                        self::$istimeout = true;
-                       return false;
+                       return [];
                }
                $feed = $curlResult->getBody();
                $feed_data = Feed::import($feed);
 
                if (!$feed_data) {
                        if (!$probe) {
-                               return false;
+                               return [];
                        }
 
                        $feed_url = self::getFeedLink($url, $feed);
 
                        if (!$feed_url) {
-                               return false;
+                               return [];
                        }
 
                        return self::feed($feed_url, false);
@@ -1920,11 +1920,11 @@ class Probe
        private static function mail($uri, $uid)
        {
                if (!Network::isEmailDomainValid($uri)) {
-                       return false;
+                       return [];
                }
 
                if ($uid == 0) {
-                       return false;
+                       return [];
                }
 
                $user = DBA::selectFirst('user', ['prvkey'], ['uid' => $uid]);
@@ -1934,7 +1934,7 @@ class Probe
                $mailacct = DBA::selectFirst('mailacct', $fields, $condition);
 
                if (!DBA::isResult($user) || !DBA::isResult($mailacct)) {
-                       return false;
+                       return [];
                }
 
                $mailbox = Email::constructMailboxName($mailacct);
@@ -1942,14 +1942,14 @@ class Probe
                openssl_private_decrypt(hex2bin($mailacct['pass']), $password, $user['prvkey']);
                $mbox = Email::connect($mailbox, $mailacct['user'], $password);
                if (!$mbox) {
-                       return false;
+                       return [];
                }
 
                $msgs = Email::poll($mbox, $uri);
                Logger::log('searching '.$uri.', '.count($msgs).' messages found.', Logger::DEBUG);
 
                if (!count($msgs)) {
-                       return false;
+                       return [];
                }
 
                $phost = substr($uri, strpos($uri, '@') + 1);