]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/GServer.php
We now store the receivers as well
[friendica.git] / src / Model / GServer.php
index bf0d0d2c2e76eb6790b1b7753ffb5726680c8a2f..c0e4899923d86cb375109e9b2240675d166cc5eb 100644 (file)
@@ -32,6 +32,7 @@ use Friendica\Database\Database;
 use Friendica\Database\DBA;
 use Friendica\DI;
 use Friendica\Module\Register;
+use Friendica\Network\HTTPClient\Client\HttpClientAccept;
 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
 use Friendica\Network\HTTPClient\Capability\ICanHandleHttpResponses;
 use Friendica\Protocol\Relay;
@@ -67,6 +68,7 @@ class GServer
        const DETECT_MASTODON_API = 16;
        const DETECT_STATUS_PHP = 17; // Nextcloud
        const DETECT_V1_CONFIG = 18;
+       const DETECT_PUMPIO = 19;
 
        // Standardized endpoints
        const DETECT_STATISTICS_JSON = 100;
@@ -342,16 +344,16 @@ class GServer
 
                // When a nodeinfo is present, we don't need to dig further
                $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
-               $curlResult = DI::httpClient()->get($url . '/.well-known/nodeinfo', [HttpClientOptions::TIMEOUT => $xrd_timeout]);
+               $curlResult = DI::httpClient()->get($url . '/.well-known/nodeinfo', HttpClientAccept::JSON, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
                if ($curlResult->isTimeout()) {
                        self::setFailure($url);
                        return false;
                }
 
                // On a redirect follow the new host but mark the old one as failure
-               if ($curlResult->isSuccess() && (parse_url($url, PHP_URL_HOST) != parse_url($curlResult->getRedirectUrl(), PHP_URL_HOST))) {
-                       $curlResult = DI::httpClient()->get($url, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
-                       if (parse_url($url, PHP_URL_HOST) != parse_url($curlResult->getRedirectUrl(), PHP_URL_HOST)) {
+               if ($curlResult->isSuccess() && !empty($curlResult->getRedirectUrl()) && (parse_url($url, PHP_URL_HOST) != parse_url($curlResult->getRedirectUrl(), PHP_URL_HOST))) {
+                       $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
+                       if (!empty($curlResult->getRedirectUrl()) && parse_url($url, PHP_URL_HOST) != parse_url($curlResult->getRedirectUrl(), PHP_URL_HOST)) {
                                Logger::info('Found redirect. Mark old entry as failure', ['old' => $url, 'new' => $curlResult->getRedirectUrl()]);
                                self::setFailure($url);
                                self::detect($curlResult->getRedirectUrl(), $network, $only_nodeinfo);
@@ -376,6 +378,12 @@ class GServer
                if (empty($nodeinfo['network']) || in_array($nodeinfo['network'], [Protocol::DFRN, Protocol::ZOT])) {
                        if (!empty($nodeinfo['detection-method'])) {
                                $serverdata['detection-method'] = $nodeinfo['detection-method'];
+
+                               foreach (['registered-users', 'active_users_monthly', 'active-halfyear-users', 'local-posts'] as $field) {
+                                       if (!empty($nodeinfo[$field])) {
+                                               $serverdata[$field] = $nodeinfo[$field];
+                                       }
+                               }
                        }
 
                        // Fetch the landing page, possibly it reveals some data
@@ -386,9 +394,9 @@ class GServer
                                        $basedata = ['detection-method' => self::DETECT_MANUAL];
                                }
 
-                               $curlResult = DI::httpClient()->get($baseurl, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
+                               $curlResult = DI::httpClient()->get($baseurl, HttpClientAccept::HTML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
                                if ($curlResult->isSuccess()) {
-                                       if ((parse_url($baseurl, PHP_URL_HOST) != parse_url($curlResult->getRedirectUrl(), PHP_URL_HOST))) {
+                                       if (!empty($curlResult->getRedirectUrl()) && (parse_url($baseurl, PHP_URL_HOST) != parse_url($curlResult->getRedirectUrl(), PHP_URL_HOST))) {
                                                Logger::info('Found redirect. Mark old entry as failure', ['old' => $url, 'new' => $curlResult->getRedirectUrl()]);
                                                self::setFailure($url);
                                                self::detect($curlResult->getRedirectUrl(), $network, $only_nodeinfo);
@@ -410,7 +418,7 @@ class GServer
                                        // When the base path doesn't seem to contain a social network we try the complete path.
                                        // Most detectable system have to be installed in the root directory.
                                        // We checked the base to avoid false positives.
-                                       $curlResult = DI::httpClient()->get($url, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
+                                       $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
                                        if ($curlResult->isSuccess()) {
                                                $urldata = self::analyseRootHeader($curlResult, $serverdata);
                                                $urldata = self::analyseRootBody($curlResult, $urldata, $url);
@@ -430,14 +438,20 @@ class GServer
                                }
                        }
 
-                       if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ACTIVITYPUB)) {
+                       if (empty($nodeinfo['network']) && (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ACTIVITYPUB))) {
                                $serverdata = self::detectMastodonAlikes($url, $serverdata);
                        }
 
                        // All following checks are done for systems that always have got a "host-meta" endpoint.
                        // With this check we don't have to waste time and ressources for dead systems.
                        // Also this hopefully prevents us from receiving abuse messages.
-                       if (empty($serverdata['network']) && !self::validHostMeta($url)) {
+                       $validHostMeta = self::validHostMeta($url);
+
+                       if (empty($serverdata['network']) && !$validHostMeta) {
+                               $serverdata = self::detectFromContacts($url, $serverdata);
+                       }
+
+                       if (empty($serverdata['network']) && !$validHostMeta) {
                                self::setFailure($url);
                                return false;
                        }
@@ -464,10 +478,14 @@ class GServer
                                $serverdata = self::detectNextcloud($url, $serverdata);
                        }
 
-                       if (empty($serverdata['network'])) {
+                       if (empty($nodeinfo['network']) && empty($serverdata['network'])) {
                                $serverdata = self::detectGNUSocial($url, $serverdata);
                        }
 
+                       if (empty($serverdata['network'])) {
+                               $serverdata = self::detectPumpIO($url, $serverdata);
+                       }
+
                        $serverdata = array_merge($nodeinfo, $serverdata);
                } else {
                        $serverdata = $nodeinfo;
@@ -475,9 +493,13 @@ class GServer
 
                // Detect the directory type
                $serverdata['directory-type'] = self::DT_NONE;
-               $serverdata = self::checkPoCo($url, $serverdata);
+
                $serverdata = self::checkMastodonDirectory($url, $serverdata);
 
+               if ($serverdata['directory-type'] == self::DT_NONE) {
+                       $serverdata = self::checkPoCo($url, $serverdata);
+               }
+
                // We can't detect the network type. Possibly it is some system that we don't know yet
                if (empty($serverdata['network'])) {
                        $serverdata['network'] = Protocol::PHANTOM;
@@ -491,17 +513,21 @@ class GServer
                $serverdata['url'] = $url;
                $serverdata['nurl'] = Strings::normaliseLink($url);
 
-               // We take the highest number that we do find
-               $registeredUsers = $serverdata['registered-users'] ?? 0;
+               if (in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
+                       $serverdata = self::detectNetworkViaContacts($url, $serverdata);
+               }
 
-               // On an active server there has to be at least a single user
-               if (($serverdata['network'] != Protocol::PHANTOM) && ($registeredUsers == 0)) {
-                       $registeredUsers = 1;
+               if ($serverdata['network'] == Protocol::ACTIVITYPUB) {
+                       $serverdata = self::fetchWeeklyUsage($url, $serverdata);
                }
 
-               if ($serverdata['network'] == Protocol::PHANTOM) {
-                       $serverdata['registered-users'] = max($registeredUsers, 1);
-                       $serverdata = self::detectNetworkViaContacts($url, $serverdata);
+               $serverdata['registered-users'] = $serverdata['registered-users'] ?? 0;
+
+               // On an active server there has to be at least a single user
+               if (!in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]) && ($serverdata['registered-users'] == 0)) {
+                       $serverdata['registered-users'] = 1;
+               } elseif (in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
+                       $serverdata['registered-users'] = 0;
                }
 
                $serverdata['next_contact'] = self::getNextUpdateDate(true);
@@ -515,11 +541,6 @@ class GServer
                        $ret = DBA::insert('gserver', $serverdata);
                        $id = DBA::lastInsertId();
                } else {
-                       // Don't override the network with 'unknown' when there had been a valid entry before
-                       if (($serverdata['network'] == Protocol::PHANTOM) && !empty($gserver['network'])) {
-                               unset($serverdata['network']);
-                       }
-
                        $ret = DBA::update('gserver', $serverdata, ['nurl' => $serverdata['nurl']]);
                        $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => $serverdata['nurl']]);
                        if (DBA::isResult($gserver)) {
@@ -527,14 +548,31 @@ class GServer
                        }
                }
 
-               if (!empty($serverdata['network']) && !empty($id) && ($serverdata['network'] != Protocol::PHANTOM)) {
+               // Count the number of known contacts from this server
+               if (!empty($id) && !in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
                        $apcontacts = DBA::count('apcontact', ['gsid' => $id]);
-                       $contacts = DBA::count('contact', ['uid' => 0, 'gsid' => $id]);
-                       $max_users = max($apcontacts, $contacts, $registeredUsers, 1);
-                       if ($max_users > $registeredUsers) {
+                       $contacts = DBA::count('contact', ['uid' => 0, 'gsid' => $id, 'failed' => false]);
+                       $max_users = max($apcontacts, $contacts);
+                       if ($max_users > $serverdata['registered-users']) {
                                Logger::info('Update registered users', ['id' => $id, 'url' => $serverdata['nurl'], 'registered-users' => $max_users]);
                                DBA::update('gserver', ['registered-users' => $max_users], ['id' => $id]);
                        }
+
+                       if (empty($serverdata['active-month-users'])) {
+                               $contacts = DBA::count('contact', ["`uid` = ? AND `gsid` = ? AND NOT `failed` AND `last-item` > ?", 0, $id, DateTimeFormat::utc('now - 30 days')]);
+                               if ($contacts > 0) {
+                                       Logger::info('Update monthly users', ['id' => $id, 'url' => $serverdata['nurl'], 'monthly-users' => $contacts]);
+                                       DBA::update('gserver', ['active-month-users' => $contacts], ['id' => $id]);
+                               }
+                       }
+       
+                       if (empty($serverdata['active-halfyear-users'])) {
+                               $contacts = DBA::count('contact', ["`uid` = ? AND `gsid` = ? AND NOT `failed` AND `last-item` > ?", 0, $id, DateTimeFormat::utc('now - 180 days')]);
+                               if ($contacts > 0) {
+                                       Logger::info('Update halfyear users', ['id' => $id, 'url' => $serverdata['nurl'], 'halfyear-users' => $contacts]);
+                                       DBA::update('gserver', ['active-halfyear-users' => $contacts], ['id' => $id]);
+                               }
+                       }
                }
 
                if (!empty($serverdata['network']) && in_array($serverdata['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
@@ -554,7 +592,7 @@ class GServer
        {
                Logger::info('Discover relay data', ['server' => $server_url]);
 
-               $curlResult = DI::httpClient()->get($server_url . '/.well-known/x-social-relay');
+               $curlResult = DI::httpClient()->get($server_url . '/.well-known/x-social-relay', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return;
                }
@@ -649,7 +687,7 @@ class GServer
         */
        private static function fetchStatistics(string $url)
        {
-               $curlResult = DI::httpClient()->get($url . '/statistics.json');
+               $curlResult = DI::httpClient()->get($url . '/statistics.json', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return [];
                }
@@ -686,6 +724,21 @@ class GServer
                        }
                }
 
+               if (!empty($data['total_users'])) {
+                       $serverdata['registered-users'] = max($data['total_users'], 1);
+               }
+
+               if (!empty($data['active_users_monthly'])) {
+                       $serverdata['active-month-users'] = max($data['active_users_monthly'], 0);
+               }
+
+               if (!empty($data['active_users_halfyear'])) {
+                       $serverdata['active-halfyear-users'] = max($data['active_users_halfyear'], 0);
+               }
+
+               if (!empty($data['local_posts'])) {
+                       $serverdata['local-posts'] = max($data['local_posts'], 0);
+               }
 
                if (!empty($data['registrations_open'])) {
                        $serverdata['register_policy'] = Register::OPEN;
@@ -760,8 +813,7 @@ class GServer
         */
        private static function parseNodeinfo1(string $nodeinfo_url)
        {
-               $curlResult = DI::httpClient()->get($nodeinfo_url);
-
+               $curlResult = DI::httpClient()->get($nodeinfo_url, HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return [];
                }
@@ -800,6 +852,22 @@ class GServer
                        $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
                }
 
+               if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
+                       $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
+               }
+
+               if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
+                       $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
+               }
+
+               if (!empty($nodeinfo['usage']['localPosts'])) {
+                       $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
+               }
+
+               if (!empty($nodeinfo['usage']['localComments'])) {
+                       $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
+               }
+
                if (!empty($nodeinfo['protocols']['inbound']) && is_array($nodeinfo['protocols']['inbound'])) {
                        $protocols = [];
                        foreach ($nodeinfo['protocols']['inbound'] as $protocol) {
@@ -838,7 +906,7 @@ class GServer
         */
        private static function parseNodeinfo2(string $nodeinfo_url)
        {
-               $curlResult = DI::httpClient()->get($nodeinfo_url);
+               $curlResult = DI::httpClient()->get($nodeinfo_url, HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return [];
                }
@@ -866,6 +934,11 @@ class GServer
                                // Version numbers on Nodeinfo are presented with additional info, e.g.:
                                // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
                                $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
+
+                               // qoto advertises itself as Mastodon
+                               if (($server['platform'] == 'mastodon') && substr($nodeinfo['software']['version'], -5) == '-qoto') {
+                                       $server['platform'] = 'qoto';
+                               }
                        }
                }
 
@@ -877,6 +950,22 @@ class GServer
                        $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
                }
 
+               if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
+                       $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
+               }
+
+               if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
+                       $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
+               }
+
+               if (!empty($nodeinfo['usage']['localPosts'])) {
+                       $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
+               }
+
+               if (!empty($nodeinfo['usage']['localComments'])) {
+                       $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
+               }
+
                if (!empty($nodeinfo['protocols'])) {
                        $protocols = [];
                        foreach ($nodeinfo['protocols'] as $protocol) {
@@ -917,7 +1006,7 @@ class GServer
         */
        private static function fetchSiteinfo(string $url, array $serverdata)
        {
-               $curlResult = DI::httpClient()->get($url . '/siteinfo.json');
+               $curlResult = DI::httpClient()->get($url . '/siteinfo.json', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return $serverdata;
                }
@@ -956,6 +1045,22 @@ class GServer
                        $serverdata['registered-users'] = max($data['channels_total'], 1);
                }
 
+               if (!empty($data['channels_active_monthly'])) {
+                       $serverdata['active-month-users'] = max($data['channels_active_monthly'], 0);
+               }
+
+               if (!empty($data['channels_active_halfyear'])) {
+                       $serverdata['active-halfyear-users'] = max($data['channels_active_halfyear'], 0);
+               }
+
+               if (!empty($data['local_posts'])) {
+                       $serverdata['local-posts'] = max($data['local_posts'], 0);
+               }
+
+               if (!empty($data['local_comments'])) {
+                       $serverdata['local-comments'] = max($data['local_comments'], 0);
+               }
+
                if (!empty($data['register_policy'])) {
                        switch ($data['register_policy']) {
                                case 'REGISTER_OPEN':
@@ -986,7 +1091,7 @@ class GServer
        private static function validHostMeta(string $url)
        {
                $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
-               $curlResult = DI::httpClient()->get($url . '/.well-known/host-meta', [HttpClientOptions::TIMEOUT => $xrd_timeout]);
+               $curlResult = DI::httpClient()->get($url . '/.well-known/host-meta', HttpClientAccept::XRD_XML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
                if (!$curlResult->isSuccess()) {
                        return false;
                }
@@ -1049,16 +1154,18 @@ class GServer
                        return $serverdata;
                }
 
+               $time = time();
                foreach ($contacts as $contact) {
-                       $probed = Contact::getByURL($contact);
-                       if (!empty($probed) && in_array($probed['network'], Protocol::FEDERATED)) {
+                       $probed = Contact::getByURL($contact, true);
+                       if (!empty($probed) && !$probed['failed'] && in_array($probed['network'], Protocol::FEDERATED)) {
                                $serverdata['network'] = $probed['network'];
                                break;
+                       } elseif ((time() - $time) > 10) {
+                               // To reduce the stress on remote systems we probe a maximum of 10 seconds
+                               break;
                        }
                }
 
-               $serverdata['registered-users'] = max($serverdata['registered-users'], count($contacts), 1);
-
                return $serverdata;
        }
 
@@ -1076,7 +1183,7 @@ class GServer
        {
                $serverdata['poco'] = '';
 
-               $curlResult = DI::httpClient()->get($url . '/poco');
+               $curlResult = DI::httpClient()->get($url . '/poco', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return $serverdata;
                }
@@ -1106,7 +1213,7 @@ class GServer
         */
        public static function checkMastodonDirectory(string $url, array $serverdata)
        {
-               $curlResult = DI::httpClient()->get($url . '/api/v1/directory?limit=1');
+               $curlResult = DI::httpClient()->get($url . '/api/v1/directory?limit=1', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess()) {
                        return $serverdata;
                }
@@ -1133,8 +1240,7 @@ class GServer
         */
        private static function detectPeertube(string $url, array $serverdata)
        {
-               $curlResult = DI::httpClient()->get($url . '/api/v1/config');
-
+               $curlResult = DI::httpClient()->get($url . '/api/v1/config', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
                        return $serverdata;
                }
@@ -1181,8 +1287,7 @@ class GServer
         */
        private static function detectNextcloud(string $url, array $serverdata)
        {
-               $curlResult = DI::httpClient()->get($url . '/status.php');
-
+               $curlResult = DI::httpClient()->get($url . '/status.php', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
                        return $serverdata;
                }
@@ -1205,6 +1310,65 @@ class GServer
                return $serverdata;
        }
 
+       private static function fetchWeeklyUsage(string $url, array $serverdata) {
+               $curlResult = DI::httpClient()->get($url . '/api/v1/instance/activity', HttpClientAccept::JSON);
+               if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
+                       return $serverdata;
+               }
+
+               $data = json_decode($curlResult->getBody(), true);
+               if (empty($data)) {
+                       return $serverdata;
+               }
+
+               $current_week = [];
+               foreach ($data as $week) {
+                       // Use only data from a full week
+                       if (empty($week['week']) || (time() - $week['week']) < 7 * 24 * 60 * 60) {
+                               continue;
+                       }
+
+                       // Most likely the data is sorted correctly. But we better are safe than sorry
+                       if (empty($current_week['week']) || ($current_week['week'] < $week['week'])) {
+                               $current_week = $week;
+                       } 
+               }
+
+               if (!empty($current_week['logins'])) {
+                       $serverdata['active-week-users'] = max($current_week['logins'], 0);
+               }
+
+               return $serverdata;
+       }
+       
+       /**
+        * Detects the server network type from contacts of that server
+        *
+        * @param string $url        URL of the given server
+        * @param array  $serverdata array with server data
+        *
+        * @return array server data
+        */
+       private static function detectFromContacts(string $url, array $serverdata)
+       {
+               $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => Strings::normaliseLink($url)]);
+               if (empty($gserver)) {
+                       return $serverdata;     
+               }
+
+               $contact = Contact::selectFirst(['id'], ['uid' => 0, 'failed' => false, 'gsid' => $gserver['id']]);
+
+               // Via probing we can be sure that the server is responding
+               if (!empty($contact['id']) && Contact::updateFromProbe($contact['id'])) {
+                       $contact = Contact::selectFirst(['network', 'failed'], ['id' => $contact['id']]);
+                       if (!$contact['failed'] && in_array($contact['network'], Protocol::FEDERATED)) {
+                               $serverdata['network'] = $contact['network'];
+                       }
+               }
+
+               return $serverdata;
+       }
+
        /**
         * Detects data from a given server url if it was a mastodon alike system
         *
@@ -1215,8 +1379,7 @@ class GServer
         */
        private static function detectMastodonAlikes(string $url, array $serverdata)
        {
-               $curlResult = DI::httpClient()->get($url . '/api/v1/instance');
-
+               $curlResult = DI::httpClient()->get($url . '/api/v1/instance', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
                        return $serverdata;
                }
@@ -1281,7 +1444,7 @@ class GServer
         */
        private static function detectHubzilla(string $url, array $serverdata)
        {
-               $curlResult = DI::httpClient()->get($url . '/api/statusnet/config.json');
+               $curlResult = DI::httpClient()->get($url . '/api/statusnet/config.json', HttpClientAccept::JSON);
                if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
                        return $serverdata;
                }
@@ -1366,7 +1529,57 @@ class GServer
                }
 
                return $val;
-        }
+       }
+
+       /**
+        * Detect if the URL belongs to a pump.io server
+        *
+        * @param string $url        URL of the given server
+        * @param array  $serverdata array with server data
+        *
+        * @return array server data
+        */
+       private static function detectPumpIO(string $url, array $serverdata)
+       {
+               $curlResult = DI::httpClient()->get($url . '/.well-known/host-meta.json', HttpClientAccept::JSON);
+               if (!$curlResult->isSuccess()) {
+                       return $serverdata;
+               }
+
+               $data = json_decode($curlResult->getBody(), true);
+               if (empty($data['links'])) {
+                       return $serverdata;
+
+               }
+
+               // We are looking for some endpoints that are typical for pump.io
+               $trust = 0;
+               foreach ($data['links'] as $link) {
+                       if (empty($link['rel'])) {
+                               continue;
+                       }
+                       if (in_array($link['rel'], ['registration_endpoint', 'dialback', 'http://apinamespace.org/activitypub/whoami'])) {
+                               ++$trust;
+                       }
+               }
+
+               if ($trust == 3) {
+                       $serverdata['detection-method'] = self::DETECT_PUMPIO;
+
+                       $serverdata['platform'] = 'pumpio';
+                       $serverdata['version']  = '';
+                       $serverdata['network']  = Protocol::PUMPIO;
+
+                       $servers = $curlResult->getHeader('Server');
+                       foreach ($servers as $server) {
+                               if (preg_match("#pump.io/(.*)\s#U", $server, $matches)) {
+                                       $serverdata['version']  = $matches[1];
+                               }
+                       }
+               }
+
+               return $serverdata;
+       }
 
        /**
         * Detect if the URL belongs to a GNU Social server
@@ -1379,7 +1592,7 @@ class GServer
        private static function detectGNUSocial(string $url, array $serverdata)
        {
                // Test for GNU Social
-               $curlResult = DI::httpClient()->get($url . '/api/gnusocial/version.json');
+               $curlResult = DI::httpClient()->get($url . '/api/gnusocial/version.json', HttpClientAccept::JSON);
                if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
                        ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
                        $serverdata['platform'] = 'gnusocial';
@@ -1397,7 +1610,7 @@ class GServer
                }
 
                // Test for Statusnet
-               $curlResult = DI::httpClient()->get($url . '/api/statusnet/version.json');
+               $curlResult = DI::httpClient()->get($url . '/api/statusnet/version.json', HttpClientAccept::JSON);
                if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
                        ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
 
@@ -1433,6 +1646,8 @@ class GServer
         */
        private static function detectFriendica(string $url, array $serverdata)
        {
+               // There is a bug in some versions of Friendica that will return an ActivityStream actor when the content type "application/json" is requested.
+               // Because of this me must not use ACCEPT_JSON here.
                $curlResult = DI::httpClient()->get($url . '/friendica/json');
                if (!$curlResult->isSuccess()) {
                        $curlResult = DI::httpClient()->get($url . '/friendika/json');
@@ -1511,6 +1726,10 @@ class GServer
                        return $serverdata;
                }
 
+               // Using only body information we cannot safely detect a lot of systems.
+               // So we define a list of platforms that we can detect safely.
+               $valid_platforms = ['friendica', 'friendika', 'diaspora', 'mastodon', 'hubzilla', 'misskey', 'peertube', 'wordpress', 'write.as'];
+
                $doc = new DOMDocument();
                @$doc->loadHTML($curlResult->getBody());
                $xpath = new DOMXPath($doc);
@@ -1560,11 +1779,8 @@ class GServer
                                                $serverdata['version'] = $version_part[1];
 
                                                // We still do need a reliable test if some AP plugin is activated
-                                               if (DBA::exists('apcontact', ['baseurl' => $url])) {
-                                                       $serverdata['network'] = Protocol::ACTIVITYPUB;
-                                               } else {
-                                                       $serverdata['network'] = Protocol::FEED;
-                                               }
+                                               // By now we just check in a later process for some known contacts
+                                               $serverdata['network'] = Protocol::FEED;
 
                                                if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
                                                        $serverdata['detection-method'] = self::DETECT_BODY;
@@ -1624,7 +1840,11 @@ class GServer
                        }
                }
 
-               if (!empty($serverdata['network']) && ($serverdata['detection-method'] == self::DETECT_MANUAL)) {
+               if (!empty($serverdata['platform']) && in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_BODY]) && !in_array($serverdata['platform'], $valid_platforms)) {
+                       $serverdata['network'] = Protocol::PHANTOM;
+                       $serverdata['version'] = '';
+                       $serverdata['detection-method'] = self::DETECT_MANUAL;
+               } elseif (!empty($serverdata['network']) && ($serverdata['detection-method'] == self::DETECT_MANUAL)) {
                        $serverdata['detection-method'] = self::DETECT_BODY;
                }
 
@@ -1735,7 +1955,7 @@ class GServer
                $protocols = ['activitypub', 'diaspora', 'dfrn', 'ostatus'];
                foreach ($protocols as $protocol) {
                        $query = '{nodes(protocol:"' . $protocol . '"){host}}';
-                       $curlResult = DI::httpClient()->fetch('https://the-federation.info/graphql?query=' . urlencode($query));
+                       $curlResult = DI::httpClient()->fetch('https://the-federation.info/graphql?query=' . urlencode($query), HttpClientAccept::JSON);
                        if (!empty($curlResult)) {
                                $data = json_decode($curlResult, true);
                                if (!empty($data['data']['nodes'])) {
@@ -1752,8 +1972,7 @@ class GServer
 
                if (!empty($accesstoken)) {
                        $api = 'https://instances.social/api/1.0/instances/list?count=0';
-                       $curlResult = DI::httpClient()->get($api, [HttpClientOptions::HEADERS => ['Authorization' => ['Bearer ' . $accesstoken]]]);
-
+                       $curlResult = DI::httpClient()->get($api, HttpClientAccept::JSON, [HttpClientOptions::HEADERS => ['Authorization' => ['Bearer ' . $accesstoken]]]);
                        if ($curlResult->isSuccess()) {
                                $servers = json_decode($curlResult->getBody(), true);