]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/GContact.php
Removed temporary code
[friendica.git] / src / Model / GContact.php
index bf9aa2cf20950287c9b703a95dfde7cabb6dfca4..6549e9efe23de0dbc410ec1340e66593f20845e4 100644 (file)
 
 namespace Friendica\Model;
 
-use DOMDocument;
-use DOMXPath;
 use Exception;
-use Friendica\Core\Logger;
 use Friendica\Core\Protocol;
-use Friendica\Core\System;
-use Friendica\Core\Search;
-use Friendica\Core\Worker;
 use Friendica\Database\DBA;
-use Friendica\DI;
-use Friendica\Network\Probe;
-use Friendica\Protocol\ActivityPub;
-use Friendica\Protocol\PortableContact;
 use Friendica\Util\DateTimeFormat;
-use Friendica\Util\Network;
-use Friendica\Util\Strings;
 
 /**
  * This class handles GlobalContact related functions
  */
 class GContact
 {
-       /**
-        * No discovery of followers/followings
-        */
-       const DISCOVERY_NONE = 0;
-       /**
-        * Only discover followers/followings from direct contacts
-        */
-       const DISCOVERY_DIRECT = 1;
-       /**
-        * Recursive discovery of followers/followings
-        */
-       const DISCOVERY_RECURSIVE = 2;
-
-       /**
-        * Search global contact table by nick or name
-        *
-        * @param string $search Name or nick
-        * @param string $mode   Search mode (e.g. "community")
-        *
-        * @return array with search results
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        */
-       public static function searchByName($search, $mode = '')
-       {
-               if (empty($search)) {
-                       return [];
-               }
-
-               // check supported networks
-               if (DI::config()->get('system', 'diaspora_enabled')) {
-                       $diaspora = Protocol::DIASPORA;
-               } else {
-                       $diaspora = Protocol::DFRN;
-               }
-
-               if (!DI::config()->get('system', 'ostatus_disabled')) {
-                       $ostatus = Protocol::OSTATUS;
-               } else {
-                       $ostatus = Protocol::DFRN;
-               }
-
-               // check if we search only communities or every contact
-               if ($mode === 'community') {
-                       $extra_sql = ' AND `community`';
-               } else {
-                       $extra_sql = '';
-               }
-
-               $search .= '%';
-
-               $results = DBA::p("SELECT `nurl` FROM `gcontact`
-                       WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
-                               ((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
-                               (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
-                               GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
-                       Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
-               );
-
-               $gcontacts = [];
-               while ($result = DBA::fetch($results)) {
-                       $urlparts = parse_url($result['nurl']);
-
-                       // Ignore results that look strange.
-                       // For historic reasons the gcontact table does contain some garbage.
-                       if (empty($result['nurl']) || !empty($urlparts['query']) || !empty($urlparts['fragment'])) {
-                               continue;
-                       }
-
-                       $gcontacts[] = Contact::getDetailsByURL($result['nurl'], local_user());
-               }
-               return $gcontacts;
-       }
-
-       /**
-        * Link the gcontact entry with user, contact and global contact
-        *
-        * @param integer $gcid Global contact ID
-        * @param integer $uid  User ID
-        * @param integer $cid  Contact ID
-        * @param integer $zcid Global Contact ID
-        * @return void
-        * @throws Exception
-        */
-       public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
-       {
-               if ($gcid <= 0) {
-                       return;
-               }
-
-               $condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
-               DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
-       }
-
-       /**
-        * Sanitize the given gcontact data
-        *
-        * Generation:
-        *  0: No definition
-        *  1: Profiles on this server
-        *  2: Contacts of profiles on this server
-        *  3: Contacts of contacts of profiles on this server
-        *  4: ...
-        *
-        * @param array $gcontact array with gcontact data
-        * @return array $gcontact
-        * @throws Exception
-        */
-       public static function sanitize($gcontact)
-       {
-               if (empty($gcontact['url'])) {
-                       throw new Exception('URL is empty');
-               }
-
-               $gcontact['server_url'] = $gcontact['server_url'] ?? '';
-
-               $urlparts = parse_url($gcontact['url']);
-               if (empty($urlparts['scheme'])) {
-                       throw new Exception('This (' . $gcontact['url'] . ") doesn't seem to be an url.");
-               }
-
-               if (in_array($urlparts['host'], ['twitter.com', 'identi.ca'])) {
-                       throw new Exception('Contact from a non federated network ignored. (' . $gcontact['url'] . ')');
-               }
-
-               // Don't store the statusnet connector as network
-               // We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
-               if ($gcontact['network'] == Protocol::STATUSNET) {
-                       $gcontact['network'] = '';
-               }
-
-               // Assure that there are no parameter fragments in the profile url
-               if (empty($gcontact['*network']) || in_array($gcontact['network'], Protocol::FEDERATED)) {
-                       $gcontact['url'] = self::cleanContactUrl($gcontact['url']);
-               }
-
-               // The global contacts should contain the original picture, not the cached one
-               if (($gcontact['generation'] != 1) && stristr(Strings::normaliseLink($gcontact['photo']), Strings::normaliseLink(DI::baseUrl() . '/photo/'))) {
-                       $gcontact['photo'] = '';
-               }
-
-               if (empty($gcontact['network'])) {
-                       $gcontact['network'] = '';
-
-                       $condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
-                               Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
-                       $contact = DBA::selectFirst('contact', ['network'], $condition);
-                       if (DBA::isResult($contact)) {
-                               $gcontact['network'] = $contact['network'];
-                       }
-
-                       if (($gcontact['network'] == '') || ($gcontact['network'] == Protocol::OSTATUS)) {
-                               $condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
-                                       $gcontact['url'], Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
-                               $contact = DBA::selectFirst('contact', ['network'], $condition);
-                               if (DBA::isResult($contact)) {
-                                       $gcontact['network'] = $contact['network'];
-                               }
-                       }
-               }
-
-               $fields = ['network', 'updated', 'server_url', 'url', 'addr'];
-               $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($gcontact['url'])]);
-               if (DBA::isResult($gcnt)) {
-                       if (!isset($gcontact['network']) && ($gcnt['network'] != Protocol::STATUSNET)) {
-                               $gcontact['network'] = $gcnt['network'];
-                       }
-                       if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
-                               $gcontact['updated'] = $gcnt['updated'];
-                       }
-                       if (!isset($gcontact['server_url']) && (Strings::normaliseLink($gcnt['server_url']) != Strings::normaliseLink($gcnt['url']))) {
-                               $gcontact['server_url'] = $gcnt['server_url'];
-                       }
-                       if (!isset($gcontact['addr'])) {
-                               $gcontact['addr'] = $gcnt['addr'];
-                       }
-               }
-
-               if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']))
-                       && GServer::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
-               ) {
-                       $data = Probe::uri($gcontact['url']);
-
-                       if ($data['network'] == Protocol::PHANTOM) {
-                               throw new Exception('Probing for URL ' . $gcontact['url'] . ' failed');
-                       }
-
-                       $orig_profile = $gcontact['url'];
-
-                       $gcontact['server_url'] = $data['baseurl'];
-
-                       $gcontact = array_merge($gcontact, $data);
-               }
-
-               if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
-                       throw new Exception('No name and photo for URL '.$gcontact['url']);
-               }
-
-               if (!in_array($gcontact['network'], Protocol::FEDERATED)) {
-                       throw new Exception('No federated network (' . $gcontact['network'] . ') detected for URL ' . $gcontact['url']);
-               }
-
-               if (empty($gcontact['server_url'])) {
-                       // We check the server url to be sure that it is a real one
-                       $server_url = self::getBasepath($gcontact['url']);
-
-                       // We are now sure that it is a correct URL. So we use it in the future
-                       if ($server_url != '') {
-                               $gcontact['server_url'] = $server_url;
-                       }
-               }
-
-               // The server URL doesn't seem to be valid, so we don't store it.
-               if (!GServer::check($gcontact['server_url'], $gcontact['network'])) {
-                       $gcontact['server_url'] = '';
-               }
-
-               return $gcontact;
-       }
-
        /**
         * @param integer $uid id
         * @param integer $cid id
@@ -274,8 +43,7 @@ class GContact
                        "SELECT count(*) as `total`
                        FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
                        WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
-                       ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
-                       (`gcontact`.`updated` >= `gcontact`.`last_failure`))
+                       NOT `gcontact`.`failed`
                        AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d) ",
                        intval($cid),
                        intval($uid),
@@ -338,7 +106,7 @@ class GContact
                        WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
                                AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
                                AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
-                               AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
+                               AND NOT `gcontact`.`failed`
                                $sql_extra LIMIT %d, %d",
                        intval($cid),
                        intval($uid),
@@ -397,7 +165,7 @@ class GContact
                        "SELECT count(*) as `total`
                        FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
                        where `glink`.`cid` = %d and `glink`.`uid` = %d AND
-                       ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
+                       NOT `gcontact`.`failed`",
                        intval($cid),
                        intval($uid)
                );
@@ -425,7 +193,7 @@ class GContact
                        INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
                        LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
                        WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
-                       ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
+                       NOT `gcontact`.`failed`
                        ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
                        intval($uid),
                        intval($cid),
@@ -438,980 +206,6 @@ class GContact
                return $r;
        }
 
-       /**
-        * @param int     $uid   user
-        * @param integer $start optional, default 0
-        * @param integer $limit optional, default 80
-        * @return array
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        */
-       public static function suggestionQuery($uid, $start = 0, $limit = 80)
-       {
-               if (!$uid) {
-                       return [];
-               }
-
-               $network = [Protocol::DFRN, Protocol::ACTIVITYPUB];
-
-               if (DI::config()->get('system', 'diaspora_enabled')) {
-                       $network[] = Protocol::DIASPORA;
-               }
-
-               if (!DI::config()->get('system', 'ostatus_disabled')) {
-                       $network[] = Protocol::OSTATUS;
-               }
-
-               $sql_network = "'" . implode("', '", $network) . "'";
-
-               /// @todo This query is really slow
-               // By now we cache the data for five minutes
-               $r = q(
-                       "SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
-                       INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
-                       where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
-                       AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
-                       AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
-                       AND `gcontact`.`updated` >= '%s' AND NOT `gcontact`.`hide`
-                       AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
-                       AND `gcontact`.`network` IN (%s)
-                       GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
-                       intval($uid),
-                       intval($uid),
-                       intval($uid),
-                       intval($uid),
-                       DBA::NULL_DATETIME,
-                       $sql_network,
-                       intval($start),
-                       intval($limit)
-               );
-
-               if (DBA::isResult($r) && count($r) >= ($limit -1)) {
-                       return $r;
-               }
-
-               $r2 = q(
-                       "SELECT gcontact.* FROM gcontact
-                       INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
-                       WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
-                       AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
-                       AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
-                       AND `gcontact`.`updated` >= '%s'
-                       AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
-                       AND `gcontact`.`network` IN (%s)
-                       ORDER BY rand() LIMIT %d, %d",
-                       intval($uid),
-                       intval($uid),
-                       intval($uid),
-                       DBA::NULL_DATETIME,
-                       $sql_network,
-                       intval($start),
-                       intval($limit)
-               );
-
-               $list = [];
-               foreach ($r2 as $suggestion) {
-                       $list[$suggestion['nurl']] = $suggestion;
-               }
-
-               foreach ($r as $suggestion) {
-                       $list[$suggestion['nurl']] = $suggestion;
-               }
-
-               while (sizeof($list) > ($limit)) {
-                       array_pop($list);
-               }
-
-               return $list;
-       }
-
-       /**
-        * @return void
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        */
-       public static function updateSuggestions()
-       {
-               $done = [];
-
-               /// @TODO Check if it is really neccessary to poll the own server
-               PortableContact::loadWorker(0, 0, 0, DI::baseUrl() . '/poco');
-
-               $done[] = DI::baseUrl() . '/poco';
-
-               if (strlen(DI::config()->get('system', 'directory'))) {
-                       $x = Network::fetchUrl(Search::getGlobalDirectory() . '/pubsites');
-                       if (!empty($x)) {
-                               $j = json_decode($x);
-                               if (!empty($j->entries)) {
-                                       foreach ($j->entries as $entry) {
-                                               GServer::check($entry->url);
-
-                                               $url = $entry->url . '/poco';
-                                               if (!in_array($url, $done)) {
-                                                       PortableContact::loadWorker(0, 0, 0, $url);
-                                                       $done[] = $url;
-                                               }
-                                       }
-                               }
-                       }
-               }
-
-               // Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
-               $contacts = DBA::p("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN (?, ?)", Protocol::DFRN, Protocol::DIASPORA);
-               while ($contact = DBA::fetch($contacts)) {
-                       $base = substr($contact['poco'], 0, strrpos($contact['poco'], '/'));
-                       if (!in_array($base, $done)) {
-                               PortableContact::loadWorker(0, 0, 0, $base);
-                       }
-               }
-       }
-
-       /**
-        * Removes unwanted parts from a contact url
-        *
-        * @param string $url Contact url
-        *
-        * @return string Contact url with the wanted parts
-        * @throws Exception
-        */
-       public static function cleanContactUrl($url)
-       {
-               $parts = parse_url($url);
-
-               if (empty($parts['scheme']) || empty($parts['host'])) {
-                       return $url;
-               }
-
-               $new_url = $parts['scheme'] . '://' . $parts['host'];
-
-               if (!empty($parts['port'])) {
-                       $new_url .= ':' . $parts['port'];
-               }
-
-               if (!empty($parts['path'])) {
-                       $new_url .= $parts['path'];
-               }
-
-               if ($new_url != $url) {
-                       Logger::info('Cleaned contact url', ['url' => $url, 'new_url' => $new_url, 'callstack' => System::callstack()]);
-               }
-
-               return $new_url;
-       }
-
-       /**
-        * Fetch the gcontact id, add an entry if not existed
-        *
-        * @param array $contact contact array
-        *
-        * @return bool|int Returns false if not found, integer if contact was found
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function getId($contact)
-       {
-               $gcontact_id = 0;
-
-               if (empty($contact['network'])) {
-                       Logger::notice('Empty network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
-                       return false;
-               }
-
-               if (in_array($contact['network'], [Protocol::PHANTOM])) {
-                       Logger::notice('Invalid network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
-                       return false;
-               }
-
-               if ($contact['network'] == Protocol::STATUSNET) {
-                       $contact['network'] = Protocol::OSTATUS;
-               }
-
-               // All new contacts are hidden by default
-               if (!isset($contact['hide'])) {
-                       $contact['hide'] = true;
-               }
-
-               // Remove unwanted parts from the contact url (e.g. '?zrl=...')
-               if (in_array($contact['network'], Protocol::FEDERATED)) {
-                       $contact['url'] = self::cleanContactUrl($contact['url']);
-               }
-
-               DBA::lock('gcontact');
-               $fields = ['id', 'last_contact', 'last_failure', 'network'];
-               $gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($contact['url'])]);
-               if (DBA::isResult($gcnt)) {
-                       $gcontact_id = $gcnt['id'];
-               } else {
-                       $contact['location'] = $contact['location'] ?? '';
-                       $contact['about'] = $contact['about'] ?? '';
-                       $contact['generation'] = $contact['generation'] ?? 0;
-
-                       $fields = ['name' => $contact['name'], 'nick' => $contact['nick'] ?? '', 'addr' => $contact['addr'] ?? '', 'network' => $contact['network'],
-                               'url' => $contact['url'], 'nurl' => Strings::normaliseLink($contact['url']), 'photo' => $contact['photo'],
-                               'created' => DateTimeFormat::utcNow(), 'updated' => DateTimeFormat::utcNow(), 'location' => $contact['location'],
-                               'about' => $contact['about'], 'hide' => $contact['hide'], 'generation' => $contact['generation']];
-
-                       DBA::insert('gcontact', $fields);
-
-                       $condition = ['nurl' => Strings::normaliseLink($contact['url'])];
-                       $cnt = DBA::selectFirst('gcontact', ['id', 'network'], $condition, ['order' => ['id']]);
-                       if (DBA::isResult($cnt)) {
-                               $gcontact_id = $cnt['id'];
-                       }
-               }
-               DBA::unlock();
-
-               return $gcontact_id;
-       }
-
-       /**
-        * Updates the gcontact table from a given array
-        *
-        * @param array $contact contact array
-        *
-        * @return bool|int Returns false if not found, integer if contact was found
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function update($contact)
-       {
-               // Check for invalid "contact-type" value
-               if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
-                       $contact['contact-type'] = 0;
-               }
-
-               /// @todo update contact table as well
-
-               $gcontact_id = self::getId($contact);
-
-               if (!$gcontact_id) {
-                       return false;
-               }
-
-               $public_contact = DBA::selectFirst('gcontact', [
-                       'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'keywords',
-                       'contact-type', 'hide', 'nsfw', 'network', 'alias', 'notify', 'server_url', 'connect', 'updated', 'url'
-               ], ['id' => $gcontact_id]);
-
-               if (!DBA::isResult($public_contact)) {
-                       return false;
-               }
-
-               // Get all field names
-               $fields = [];
-               foreach ($public_contact as $field => $data) {
-                       $fields[$field] = $data;
-               }
-
-               unset($fields['url']);
-               unset($fields['updated']);
-               unset($fields['hide']);
-
-               // Bugfix: We had an error in the storing of keywords which lead to the "0"
-               // This value is still transmitted via poco.
-               if (isset($contact['keywords']) && ($contact['keywords'] == '0')) {
-                       unset($contact['keywords']);
-               }
-
-               if (isset($public_contact['keywords']) && ($public_contact['keywords'] == '0')) {
-                       $public_contact['keywords'] = '';
-               }
-
-               // assign all unassigned fields from the database entry
-               foreach ($fields as $field => $data) {
-                       if (empty($contact[$field])) {
-                               $contact[$field] = $public_contact[$field];
-                       }
-               }
-
-               if (!isset($contact['hide'])) {
-                       $contact['hide'] = $public_contact['hide'];
-               }
-
-               $fields['hide'] = $public_contact['hide'];
-
-               if ($contact['network'] == Protocol::STATUSNET) {
-                       $contact['network'] = Protocol::OSTATUS;
-               }
-
-               if (!isset($contact['updated'])) {
-                       $contact['updated'] = DateTimeFormat::utcNow();
-               }
-
-               if ($contact['network'] == Protocol::TWITTER) {
-                       $contact['server_url'] = 'http://twitter.com';
-               }
-
-               if (empty($contact['server_url'])) {
-                       $data = Probe::uri($contact['url']);
-                       if ($data['network'] != Protocol::PHANTOM) {
-                               $contact['server_url'] = $data['baseurl'];
-                       }
-               } else {
-                       $contact['server_url'] = Strings::normaliseLink($contact['server_url']);
-               }
-
-               if (empty($contact['addr']) && !empty($contact['server_url']) && !empty($contact['nick'])) {
-                       $hostname = str_replace('http://', '', $contact['server_url']);
-                       $contact['addr'] = $contact['nick'] . '@' . $hostname;
-               }
-
-               // Check if any field changed
-               $update = false;
-               unset($fields['generation']);
-
-               if ((($contact['generation'] > 0) && ($contact['generation'] <= $public_contact['generation'])) || ($public_contact['generation'] == 0)) {
-                       foreach ($fields as $field => $data) {
-                               if ($contact[$field] != $public_contact[$field]) {
-                                       Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => $field, 'new' => $contact[$field], 'old' => $public_contact[$field]]);
-                                       $update = true;
-                               }
-                       }
-
-                       if ($contact['generation'] < $public_contact['generation']) {
-                               Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => 'generation', 'new' => $contact['generation'], 'old' => $public_contact['generation']]);
-                               $update = true;
-                       }
-               }
-
-               if ($update) {
-                       Logger::debug('Update gcontact.', ['contact' => $contact['url']]);
-                       $condition = ["`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)",
-                                       Strings::normaliseLink($contact['url']), $contact['generation']];
-                       $contact['updated'] = DateTimeFormat::utc($contact['updated']);
-
-                       $updated = [
-                               'photo' => $contact['photo'], 'name' => $contact['name'],
-                               'nick' => $contact['nick'], 'addr' => $contact['addr'],
-                               'network' => $contact['network'], 'birthday' => $contact['birthday'],
-                               'keywords' => $contact['keywords'],
-                               'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
-                               'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
-                               'notify' => $contact['notify'], 'url' => $contact['url'],
-                               'location' => $contact['location'], 'about' => $contact['about'],
-                               'generation' => $contact['generation'], 'updated' => $contact['updated'],
-                               'server_url' => $contact['server_url'], 'connect' => $contact['connect']
-                       ];
-
-                       DBA::update('gcontact', $updated, $condition, $fields);
-               }
-
-               return $gcontact_id;
-       }
-
-       /**
-        * Set the last date that the contact had posted something
-        *
-        * @param string $data  Probing result
-        * @param bool   $force force updating
-        */
-       public static function setLastUpdate(array $data, bool $force = false)
-       {
-               // Fetch the global contact
-               $gcontact = DBA::selectFirst('gcontact', ['created', 'updated', 'last_contact', 'last_failure'],
-                       ['nurl' => Strings::normaliseLink($data['url'])]);
-               if (!DBA::isResult($gcontact)) {
-                       return;
-               }
-
-               if (!$force && !GServer::updateNeeded($gcontact['created'], $gcontact['updated'], $gcontact['last_failure'], $gcontact['last_contact'])) {
-                       Logger::info("Don't update profile", ['url' => $data['url'], 'updated' => $gcontact['updated']]);
-                       return;
-               }
-
-               if (self::updateFromNoScrape($data)) {
-                       return;
-               }
-
-               if (!empty($data['outbox'])) {
-                       self::updateFromOutbox($data['outbox'], $data);
-               } elseif (!empty($data['poll']) && ($data['network'] == Protocol::ACTIVITYPUB)) {
-                       self::updateFromOutbox($data['poll'], $data);
-               } elseif (!empty($data['poll'])) {
-                       self::updateFromFeed($data);
-               }
-       }
-
-       /**
-        * Update a global contact via the "noscrape" endpoint
-        *
-        * @param string $data Probing result
-        *
-        * @return bool 'true' if update was successful or the server was unreachable
-        */
-       private static function updateFromNoScrape(array $data)
-       {
-               // Check the 'noscrape' endpoint when it is a Friendica server
-               $gserver = DBA::selectFirst('gserver', ['noscrape'], ["`nurl` = ? AND `noscrape` != ''",
-               Strings::normaliseLink($data['baseurl'])]);
-               if (!DBA::isResult($gserver)) {
-                       return false;
-               }
-
-               $curlResult = Network::curl($gserver['noscrape'] . '/' . $data['nick']);
-
-               if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
-                       $noscrape = json_decode($curlResult->getBody(), true);
-                       if (!empty($noscrape) && !empty($noscrape['updated'])) {
-                               $noscrape['updated'] = DateTimeFormat::utc($noscrape['updated'], DateTimeFormat::MYSQL);
-                               $fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $noscrape['updated']];
-                               DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
-                               return true;
-                       }
-               } elseif ($curlResult->isTimeout()) {
-                       // On a timeout return the existing value, but mark the contact as failure
-                       $fields = ['last_failure' => DateTimeFormat::utcNow()];
-                       DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
-                       return true;
-               }
-               return false;
-       }
-
-       /**
-        * Update a global contact via an ActivityPub Outbox
-        *
-        * @param string $feed
-        * @param array  $data Probing result
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        */
-       private static function updateFromOutbox(string $feed, array $data)
-       {
-               $outbox = ActivityPub::fetchContent($feed);
-               if (empty($outbox)) {
-                       return;
-               }
-
-               if (!empty($outbox['orderedItems'])) {
-                       $items = $outbox['orderedItems'];
-               } elseif (!empty($outbox['first']['orderedItems'])) {
-                       $items = $outbox['first']['orderedItems'];
-               } elseif (!empty($outbox['first']['href']) && ($outbox['first']['href'] != $feed)) {
-                       self::updateFromOutbox($outbox['first']['href'], $data);
-                       return;
-               } elseif (!empty($outbox['first'])) {
-                       if (is_string($outbox['first']) && ($outbox['first'] != $feed)) {
-                               self::updateFromOutbox($outbox['first'], $data);
-                       } else {
-                               Logger::warning('Unexpected data', ['outbox' => $outbox]);
-                       }
-                       return;
-               } else {
-                       $items = [];
-               }
-
-               $last_updated = '';
-               foreach ($items as $activity) {
-                       if (!empty($activity['published'])) {
-                               $published =  DateTimeFormat::utc($activity['published']);
-                       } elseif (!empty($activity['object']['published'])) {
-                               $published =  DateTimeFormat::utc($activity['object']['published']);
-                       } else {
-                               continue;
-                       }
-
-                       if ($last_updated < $published) {
-                               $last_updated = $published;
-                       }
-               }
-
-               if (empty($last_updated)) {
-                       return;
-               }
-
-               $fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
-               DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
-       }
-
-       /**
-        * Update a global contact via an XML feed
-        *
-        * @param string $data Probing result
-        */
-       private static function updateFromFeed(array $data)
-       {
-               // Search for the newest entry in the feed
-               $curlResult = Network::curl($data['poll']);
-               if (!$curlResult->isSuccess()) {
-                       $fields = ['last_failure' => DateTimeFormat::utcNow()];
-                       DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
-
-                       Logger::info("Profile wasn't reachable (no feed)", ['url' => $data['url']]);
-                       return;
-               }
-
-               $doc = new DOMDocument();
-               @$doc->loadXML($curlResult->getBody());
-
-               $xpath = new DOMXPath($doc);
-               $xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
-
-               $entries = $xpath->query('/atom:feed/atom:entry');
-
-               $last_updated = '';
-
-               foreach ($entries as $entry) {
-                       $published_item = $xpath->query('atom:published/text()', $entry)->item(0);
-                       $updated_item   = $xpath->query('atom:updated/text()'  , $entry)->item(0);
-                       $published      = !empty($published_item->nodeValue) ? DateTimeFormat::utc($published_item->nodeValue) : null;
-                       $updated        = !empty($updated_item->nodeValue) ? DateTimeFormat::utc($updated_item->nodeValue) : null;
-
-                       if (empty($published) || empty($updated)) {
-                               Logger::notice('Invalid entry for XPath.', ['entry' => $entry, 'url' => $data['url']]);
-                               continue;
-                       }
-
-                       if ($last_updated < $published) {
-                               $last_updated = $published;
-                       }
-
-                       if ($last_updated < $updated) {
-                               $last_updated = $updated;
-                       }
-               }
-
-               if (empty($last_updated)) {
-                       return;
-               }
-
-               $fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
-               DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
-       }
-       /**
-        * Updates the gcontact entry from a given public contact id
-        *
-        * @param integer $cid contact id
-        * @return void
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function updateFromPublicContactID($cid)
-       {
-               self::updateFromPublicContact(['id' => $cid]);
-       }
-
-       /**
-        * Updates the gcontact entry from a given public contact url
-        *
-        * @param string $url contact url
-        * @return integer gcontact id
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function updateFromPublicContactURL($url)
-       {
-               return self::updateFromPublicContact(['nurl' => Strings::normaliseLink($url)]);
-       }
-
-       /**
-        * Helper function for updateFromPublicContactID and updateFromPublicContactURL
-        *
-        * @param array $condition contact condition
-        * @return integer gcontact id
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       private static function updateFromPublicContact($condition)
-       {
-               $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
-                       'bd', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archive', 'term-date',
-                       'created', 'updated', 'avatar', 'success_update', 'failure_update', 'forum', 'prv',
-                       'baseurl', 'sensitive', 'unsearchable'];
-
-               $contact = DBA::selectFirst('contact', $fields, array_merge($condition, ['uid' => 0, 'network' => Protocol::FEDERATED]));
-               if (!DBA::isResult($contact)) {
-                       return 0;
-               }
-
-               $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'generation',
-                       'birthday', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archived', 'archive_date',
-                       'created', 'updated', 'photo', 'last_contact', 'last_failure', 'community', 'connect',
-                       'server_url', 'nsfw', 'hide', 'id'];
-
-               $old_gcontact = DBA::selectFirst('gcontact', $fields, ['nurl' => $contact['nurl']]);
-               $do_insert = !DBA::isResult($old_gcontact);
-               if ($do_insert) {
-                       $old_gcontact = [];
-               }
-
-               $gcontact = [];
-
-               // These fields are identical in both contact and gcontact
-               $fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
-                       'contact-type', 'network', 'addr', 'notify', 'alias', 'created', 'updated'];
-
-               foreach ($fields as $field) {
-                       $gcontact[$field] = $contact[$field];
-               }
-
-               // These fields are having different names but the same content
-               $gcontact['server_url'] = $contact['baseurl'] ?? ''; // "baseurl" can be null, "server_url" not
-               $gcontact['nsfw'] = $contact['sensitive'];
-               $gcontact['hide'] = $contact['unsearchable'];
-               $gcontact['archived'] = $contact['archive'];
-               $gcontact['archive_date'] = $contact['term-date'];
-               $gcontact['birthday'] = $contact['bd'];
-               $gcontact['photo'] = $contact['avatar'];
-               $gcontact['last_contact'] = $contact['success_update'];
-               $gcontact['last_failure'] = $contact['failure_update'];
-               $gcontact['community'] = ($contact['forum'] || $contact['prv']);
-
-               foreach (['last_contact', 'last_failure', 'updated'] as $field) {
-                       if (!empty($old_gcontact[$field]) && ($old_gcontact[$field] >= $gcontact[$field])) {
-                               unset($gcontact[$field]);
-                       }
-               }
-
-               if (!$gcontact['archived']) {
-                       $gcontact['archive_date'] = DBA::NULL_DATETIME;
-               }
-
-               if (!empty($old_gcontact['created']) && ($old_gcontact['created'] > DBA::NULL_DATETIME)
-                       && ($old_gcontact['created'] <= $gcontact['created'])) {
-                       unset($gcontact['created']);
-               }
-
-               if (empty($gcontact['birthday']) && ($gcontact['birthday'] <= DBA::NULL_DATETIME)) {
-                       unset($gcontact['birthday']);
-               }
-
-               if (empty($old_gcontact['generation']) || ($old_gcontact['generation'] > 2)) {
-                       $gcontact['generation'] = 2; // We fetched the data directly from the other server
-               }
-
-               if (!$do_insert) {
-                       DBA::update('gcontact', $gcontact, ['nurl' => $contact['nurl']], $old_gcontact);
-                       return $old_gcontact['id'];
-               } elseif (!$gcontact['archived']) {
-                       DBA::insert('gcontact', $gcontact);
-                       return DBA::lastInsertId();
-               }
-       }
-
-       /**
-        * Updates the gcontact entry from probe
-        *
-        * @param string  $url   profile link
-        * @param boolean $force Optional forcing of network probing (otherwise we use the cached data)
-        *
-        * @return boolean 'true' when contact had been updated
-        *
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function updateFromProbe($url, $force = false)
-       {
-               $data = Probe::uri($url, $force);
-
-               if (in_array($data['network'], [Protocol::PHANTOM])) {
-                       $fields = ['last_failure' => DateTimeFormat::utcNow()];
-                       DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
-                       Logger::info('Invalid network for contact', ['url' => $data['url'], 'callstack' => System::callstack()]);
-                       return false;
-               }
-
-               $data['server_url'] = $data['baseurl'];
-
-               self::update($data);
-
-               // Set the date of the latest post
-               self::setLastUpdate($data, $force);
-
-               return true;
-       }
-
-       /**
-        * Update the gcontact entry for a given user id
-        *
-        * @param int $uid User ID
-        * @return bool
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function updateForUser($uid)
-       {
-               $profile = Profile::getByUID($uid);
-               if (empty($profile)) {
-                       Logger::error('Cannot find profile', ['uid' => $uid]);
-                       return false;
-               }
-
-               $user = User::getOwnerDataById($uid);
-               if (empty($user)) {
-                       Logger::error('Cannot find user', ['uid' => $uid]);
-                       return false;
-               }
-
-               $userdata = array_merge($profile, $user);
-
-               $location = Profile::formatLocation(
-                       ['locality' => $userdata['locality'], 'region' => $userdata['region'], 'country-name' => $userdata['country-name']]
-               );
-
-               $gcontact = ['name' => $userdata['name'], 'location' => $location, 'about' => $userdata['about'],
-                               'keywords' => $userdata['pub_keywords'],
-                               'birthday' => $userdata['dob'], 'photo' => $userdata['photo'],
-                               "notify" => $userdata['notify'], 'url' => $userdata['url'],
-                               "hide" => !$userdata['net-publish'],
-                               'nick' => $userdata['nickname'], 'addr' => $userdata['addr'],
-                               "connect" => $userdata['addr'], "server_url" => DI::baseUrl(),
-                               "generation" => 1, 'network' => Protocol::DFRN];
-
-               self::update($gcontact);
-       }
-
-       /**
-        * Get the basepath for a given contact link
-        *
-        * @param string $url The gcontact link
-        * @param boolean $dont_update Don't update the contact
-        *
-        * @return string basepath
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function getBasepath($url, $dont_update = false)
-       {
-               $gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
-               if (!empty($gcontact['server_url'])) {
-                       return $gcontact['server_url'];
-               } elseif ($dont_update) {
-                       return '';
-               }
-
-               self::updateFromProbe($url, true);
-
-               // Fetch the result
-               $gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
-               if (empty($gcontact['server_url'])) {
-                       Logger::info('No baseurl for gcontact', ['url' => $url]);
-                       return '';
-               }
-
-               Logger::info('Found baseurl for gcontact', ['url' => $url, 'baseurl' => $gcontact['server_url']]);
-               return $gcontact['server_url'];
-       }
-
-       /**
-        * Fetches users of given GNU Social server
-        *
-        * If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
-        *
-        * @param string $server Server address
-        * @return bool
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function fetchGsUsers($server)
-       {
-               Logger::info('Fetching users from GNU Social server', ['server' => $server]);
-
-               $url = $server . '/main/statistics';
-
-               $curlResult = Network::curl($url);
-               if (!$curlResult->isSuccess()) {
-                       return false;
-               }
-
-               $statistics = json_decode($curlResult->getBody());
-
-               if (!empty($statistics->config->instance_address)) {
-                       if (!empty($statistics->config->instance_with_ssl)) {
-                               $server = 'https://';
-                       } else {
-                               $server = 'http://';
-                       }
-
-                       $server .= $statistics->config->instance_address;
-
-                       $hostname = $statistics->config->instance_address;
-               } elseif (!empty($statistics->instance_address)) {
-                       if (!empty($statistics->instance_with_ssl)) {
-                               $server = 'https://';
-                       } else {
-                               $server = 'http://';
-                       }
-
-                       $server .= $statistics->instance_address;
-
-                       $hostname = $statistics->instance_address;
-               }
-
-               if (!empty($statistics->users)) {
-                       foreach ($statistics->users as $nick => $user) {
-                               $profile_url = $server . '/' . $user->nickname;
-
-                               $contact = ['url' => $profile_url,
-                                               'name' => $user->fullname,
-                                               'addr' => $user->nickname . '@' . $hostname,
-                                               'nick' => $user->nickname,
-                                               "network" => Protocol::OSTATUS,
-                                               'photo' => DI::baseUrl() . '/images/person-300.jpg'];
-
-                               if (isset($user->bio)) {
-                                       $contact['about'] = $user->bio;
-                               }
-
-                               self::getId($contact);
-                       }
-               }
-       }
-
-       /**
-        * Asking GNU Social server on a regular base for their user data
-        *
-        * @return void
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
-        */
-       public static function discoverGsUsers()
-       {
-               $requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
-
-               $last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
-
-               $r = DBA::select('gserver', ['nurl', 'url'], [
-                       '`network` = ?
-                       AND `last_contact` >= `last_failure`
-                       AND `last_poco_query` < ?',
-                       Protocol::OSTATUS,
-                       $last_update
-               ], [
-                       'limit' => 5,
-                       'order' => ['RAND()']
-               ]);
-
-               if (!DBA::isResult($r)) {
-                       return;
-               }
-
-               foreach ($r as $server) {
-                       self::fetchGsUsers($server['url']);
-                       DBA::update('gserver', ['last_poco_query' => DateTimeFormat::utcNow()], ['nurl' => $server['nurl']]);
-               }
-       }
-
-       /**
-        * Fetches the followers of a given profile and adds them
-        *
-        * @param string $url URL of a profile
-        * @return void
-        */
-       public static function discoverFollowers(string $url)
-       {
-               $gcontact = DBA::selectFirst('gcontact', ['id', 'last_discovery'], ['nurl' => Strings::normaliseLink(($url))]);
-               if (!DBA::isResult($gcontact)) {
-                       return;
-               }
-
-               if ($gcontact['last_discovery'] > DateTimeFormat::utc('now - 1 month')) {
-                       Logger::info('Last discovery was less then a month before.', ['url' => $url, 'discovery' => $gcontact['last_discovery']]);
-                       return;
-               }
-
-               $gcid = $gcontact['id'];
-
-               $apcontact = APContact::getByURL($url);
-
-               if (!empty($apcontact['followers']) && is_string($apcontact['followers'])) {
-                       $followers = ActivityPub::fetchItems($apcontact['followers']);
-               } else {
-                       $followers = [];
-               }
-
-               if (!empty($apcontact['following']) && is_string($apcontact['following'])) {
-                       $followings = ActivityPub::fetchItems($apcontact['following']);
-               } else {
-                       $followings = [];
-               }
-
-               if (!empty($followers) || !empty($followings)) {
-                       if (!empty($followers)) {
-                               // Clear the follower list, since it will be recreated in the next step
-                               DBA::update('gfollower', ['deleted' => true], ['gcid' => $gcid]);
-                       }
-
-                       $contacts = [];
-                       foreach (array_merge($followers, $followings) as $contact) {
-                               if (is_string($contact)) {
-                                       $contacts[] = $contact;
-                               } elseif (!empty($contact['url']) && is_string($contact['url'])) {
-                                       $contacts[] = $contact['url'];
-                               }
-                       }
-                       $contacts = array_unique($contacts);
-
-                       Logger::info('Discover AP contacts', ['url' => $url, 'contacts' => count($contacts)]);
-                       foreach ($contacts as $contact) {
-                               $gcontact = DBA::selectFirst('gcontact', ['id'], ['nurl' => Strings::normaliseLink(($contact))]);
-                               if (DBA::isResult($gcontact)) {
-                                       $fields = [];
-                                       if (in_array($contact, $followers)) {
-                                               $fields = ['gcid' => $gcid, 'follower-gcid' => $gcontact['id']];
-                                       } elseif (in_array($contact, $followings)) {
-                                               $fields = ['gcid' => $gcontact['id'], 'follower-gcid' => $gcid];
-                                       }
-
-                                       if (!empty($fields)) {
-                                               Logger::info('Set relation between contacts', $fields);
-                                               DBA::update('gfollower', ['deleted' => false], $fields, true);
-                                               continue;
-                                       }
-                               }
-
-                               if (!Network::isUrlBlocked($contact)) {
-                                       Logger::info('Discover new AP contact', ['url' => $contact]);
-                                       Worker::add(PRIORITY_LOW, 'UpdateGContact', $contact);
-                               } else {
-                                       Logger::info('No discovery, the URL is blocked.', ['url' => $contact]);
-                               }
-                       }
-                       if (!empty($followers)) {
-                               // Delete all followers that aren't undeleted
-                               DBA::delete('gfollower', ['gcid' => $gcid, 'deleted' => true]);
-                       }
-
-                       DBA::update('gcontact', ['last_discovery' => DateTimeFormat::utcNow()], ['id' => $gcid]);
-                       Logger::info('AP contacts discovery finished, last discovery set', ['url' => $url]);
-                       return;
-               }
-
-               $data = Probe::uri($url);
-               if (empty($data['poco'])) {
-                       return;
-               }
-
-               $curlResult = Network::curl($data['poco']);
-               if (!$curlResult->isSuccess()) {
-                       return;
-               }
-               $poco = json_decode($curlResult->getBody(), true);
-               if (empty($poco['entry'])) {
-                       return;
-               }
-
-               Logger::info('PoCo Discovery started', ['url' => $url, 'contacts' => count($poco['entry'])]);
-
-               foreach ($poco['entry'] as $entries) {
-                       if (!empty($entries['urls'])) {
-                               foreach ($entries['urls'] as $entry) {
-                                       if ($entry['type'] == 'profile') {
-                                               if (DBA::exists('gcontact', ['nurl' => Strings::normaliseLink(($entry['value']))])) {
-                                                       continue;
-                                               }
-                                               if (!Network::isUrlBlocked($entry['value'])) {
-                                                       Logger::info('Discover new PoCo contact', ['url' => $entry['value']]);
-                                                       Worker::add(PRIORITY_LOW, 'UpdateGContact', $entry['value']);
-                                               } else {
-                                                       Logger::info('No discovery, the URL is blocked.', ['url' => $entry['value']]);
-                                               }
-                                       }
-                               }
-                       }
-               }
-
-               DBA::update('gcontact', ['last_discovery' => DateTimeFormat::utcNow()], ['id' => $gcid]);
-               Logger::info('PoCo Discovery finished', ['url' => $url]);
-       }
-
        /**
         * Returns a random, global contact of the current node
         *
@@ -1421,8 +215,8 @@ class GContact
        public static function getRandomUrl()
        {
                $r = DBA::selectFirst('gcontact', ['url'], [
-                       '`network` = ? 
-                       AND `last_contact` >= `last_failure`  
+                       '`network` = ?
+                       AND NOT `failed`
                        AND `updated` > ?',
                        Protocol::DFRN,
                        DateTimeFormat::utc('now - 1 month'),