]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/Contact.php
Merge remote-tracking branch 'upstream/develop' into contact-update
[friendica.git] / src / Model / Contact.php
index a0bbdd10499f43abbf6138d976c7a145e6d66402..17506a7d31dc6a5e256390cbdd2b0b6bd1ab626e 100644 (file)
@@ -124,6 +124,20 @@ class Contact extends BaseObject
                return DBA::toArray($statement);
        }
 
+       /**
+        * @param array $fields    Array of selected fields, empty for all
+        * @param array $condition Array of fields for condition
+        * @param array $params    Array of several parameters
+        * @return array
+        * @throws \Exception
+        */
+       public static function selectFirst(array $fields = [], array $condition = [], array $params = [])
+       {
+               $contact = DBA::selectFirst('contact', $fields, $condition, $params);
+
+               return $contact;
+       }
+
        /**
         * @param integer $id     Contact ID
         * @param array   $fields Array of selected fields, empty for all
@@ -162,7 +176,6 @@ class Contact extends BaseObject
 
        /**
         * @brief Get the basepath for a given contact link
-        * @todo  Add functionality to store this value in the contact table
         *
         * @param string $url The contact link
         *
@@ -172,13 +185,19 @@ class Contact extends BaseObject
         */
        public static function getBasepath($url)
        {
-               $data = Probe::uri($url);
-               if (!empty($data['baseurl'])) {
-                       return $data['baseurl'];
+               $contact = DBA::selectFirst('contact', ['baseurl'], ['uid' => 0, 'nurl' => Strings::normaliseLink($url)]);
+               if (!empty($contact['baseurl'])) {
+                       return $contact['baseurl'];
                }
 
-               // When we can't probe the server, we use some ugly function that does some pattern matching
-               return PortableContact::detectServer($url);
+               self::updateFromProbeByURL($url, true);
+
+               $contact = DBA::selectFirst('contact', ['baseurl'], ['uid' => 0, 'nurl' => Strings::normaliseLink($url)]);
+               if (!empty($contact['baseurl'])) {
+                       return $contact['baseurl'];
+               }
+
+               return '';
        }
 
        /**
@@ -579,11 +598,13 @@ class Contact extends BaseObject
                        return;
                }
 
+               $file_suffix = 'jpg';
+
                $fields = ['name' => $profile['name'], 'nick' => $user['nickname'],
                        'avatar-date' => $self['avatar-date'], 'location' => Profile::formatLocation($profile),
                        'about' => $profile['about'], 'keywords' => $profile['pub_keywords'],
-                       'gender' => $profile['gender'], 'avatar' => $profile['photo'],
-                       'contact-type' => $user['account-type'], 'xmpp' => $profile['xmpp']];
+                       'gender' => $profile['gender'], 'contact-type' => $user['account-type'],
+                       'xmpp' => $profile['xmpp']];
 
                $avatar = Photo::selectFirst(['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
                if (DBA::isResult($avatar)) {
@@ -595,8 +616,6 @@ class Contact extends BaseObject
                        $types = Image::supportedTypes();
                        if (isset($types[$avatar['type']])) {
                                $file_suffix = $types[$avatar['type']];
-                       } else {
-                               $file_suffix = 'jpg';
                        }
 
                        // We are adding a timestamp value so that other systems won't use cached content
@@ -615,6 +634,7 @@ class Contact extends BaseObject
                        $fields['micro'] = System::baseUrl() . '/images/person-48.jpg';
                }
 
+               $fields['avatar'] = System::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix;
                $fields['forum'] = $user['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
                $fields['prv'] = $user['page-flags'] == User::PAGE_FLAGS_PRVGROUP;
 
@@ -647,8 +667,8 @@ class Contact extends BaseObject
                        DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $self['nurl']]);
 
                        // Update the profile
-                       $fields = ['photo' => System::baseUrl() . '/photo/profile/' .$uid . '.jpg',
-                               'thumb' => System::baseUrl() . '/photo/avatar/' . $uid .'.jpg'];
+                       $fields = ['photo' => System::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix,
+                               'thumb' => System::baseUrl() . '/photo/avatar/' . $uid .'.' . $file_suffix];
                        DBA::update('profile', $fields, ['uid' => $uid, 'is-default' => true]);
                }
        }
@@ -777,6 +797,7 @@ class Contact extends BaseObject
                                 */
                                DBA::update('contact', ['archive' => 1], ['id' => $contact['id']]);
                                DBA::update('contact', ['archive' => 1], ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
+                               GContact::updateFromPublicContactURL($contact['url']);
                        }
                }
        }
@@ -814,6 +835,7 @@ class Contact extends BaseObject
                $fields = ['term-date' => DBA::NULL_DATETIME, 'archive' => false];
                DBA::update('contact', $fields, ['id' => $contact['id']]);
                DBA::update('contact', $fields, ['nurl' => Strings::normaliseLink($contact['url'])]);
+               GContact::updateFromPublicContactURL($contact['url']);
 
                if (!empty($contact['batch'])) {
                        $condition = ['batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
@@ -894,7 +916,7 @@ class Contact extends BaseObject
                        // If there is more than one entry we filter out the connector networks
                        if (count($r) > 1) {
                                foreach ($r as $id => $result) {
-                                       if ($result["network"] == Protocol::STATUSNET) {
+                                       if (!in_array($result["network"], Protocol::NATIVE_SUPPORT)) {
                                                unset($r[$id]);
                                        }
                                }
@@ -948,9 +970,9 @@ class Contact extends BaseObject
                }
 
                if ((empty($profile["addr"]) || empty($profile["name"])) && (defaults($profile, "gid", 0) != 0)
-                       && in_array($profile["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])
+                       && in_array($profile["network"], Protocol::FEDERATED)
                ) {
-                       Worker::add(PRIORITY_LOW, "UpdateGContact", $profile["gid"]);
+                       Worker::add(PRIORITY_LOW, "UpdateGContact", $url);
                }
 
                // Show contact details of Diaspora contacts only if connected
@@ -1078,7 +1100,7 @@ class Contact extends BaseObject
                        $profile_link = $profile_link . '?tab=profile';
                }
 
-               if (in_array($contact['network'], [Protocol::DFRN, Protocol::DIASPORA]) && !$contact['self']) {
+               if (self::canReceivePrivateMessages($contact)) {
                        $pm_url = System::baseUrl() . '/message/new/' . $contact['id'];
                }
 
@@ -1285,11 +1307,13 @@ class Contact extends BaseObject
 
                /// @todo Verify if we can't use Contact::getDetailsByUrl instead of the following
                // We first try the nurl (http://server.tld/nick), most common case
-               $contact = DBA::selectFirst('contact', ['id', 'avatar', 'updated', 'network'], ['nurl' => Strings::normaliseLink($url), 'uid' => $uid, 'deleted' => false]);
+               $fields = ['id', 'avatar', 'updated', 'network'];
+               $options = ['order' => ['id']];
+               $contact = DBA::selectFirst('contact', $fields, ['nurl' => Strings::normaliseLink($url), 'uid' => $uid, 'deleted' => false], $options);
 
                // Then the addr (nick@server.tld)
                if (!DBA::isResult($contact)) {
-                       $contact = DBA::selectFirst('contact', ['id', 'avatar', 'updated', 'network'], ['addr' => $url, 'uid' => $uid, 'deleted' => false]);
+                       $contact = DBA::selectFirst('contact', $fields, ['addr' => $url, 'uid' => $uid, 'deleted' => false], $options);
                }
 
                // Then the alias (which could be anything)
@@ -1297,7 +1321,7 @@ class Contact extends BaseObject
                        // The link could be provided as http although we stored it as https
                        $ssl_url = str_replace('http://', 'https://', $url);
                        $condition = ['`alias` IN (?, ?, ?) AND `uid` = ? AND NOT `deleted`', $url, Strings::normaliseLink($url), $ssl_url, $uid];
-                       $contact = DBA::selectFirst('contact', ['id', 'avatar', 'updated', 'network'], $condition);
+                       $contact = DBA::selectFirst('contact', $fields, $condition, $options);
                }
 
                if (DBA::isResult($contact)) {
@@ -1313,7 +1337,7 @@ class Contact extends BaseObject
 
                        // Update the contact in the background if needed but it is called by the frontend
                        if ($update_contact && $no_update && in_array($contact['network'], Protocol::NATIVE_SUPPORT)) {
-                               Worker::add(PRIORITY_LOW, "UpdateContact", $contact_id);
+                               Worker::add(PRIORITY_LOW, "UpdateContact", $contact_id, ($uid == 0 ? 'force' : ''));
                        }
 
                        if (!$update_contact || $no_update) {
@@ -1324,10 +1348,14 @@ class Contact extends BaseObject
                        return 0;
                }
 
-               // When we don't want to update, we look if we know this contact in any way
                if ($no_update && empty($default)) {
+                       // When we don't want to update, we look if we know this contact in any way
                        $data = self::getProbeDataFromDatabase($url, $contact_id);
                        $background_update = true;
+               } elseif ($no_update && !empty($default)) {
+                       // If there are default values, take these
+                       $data = $default;
+                       $background_update = false;
                } else {
                        $data = [];
                        $background_update = false;
@@ -1342,18 +1370,9 @@ class Contact extends BaseObject
                        }
                }
 
-               // Last try in gcontact for unsupported networks
-               if (!in_array($data["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::PUMPIO, Protocol::MAIL, Protocol::FEED])) {
-                       if ($uid != 0) {
-                               return 0;
-                       }
-
-                       $contact = array_merge(self::getProbeDataFromDatabase($url, $contact_id), $default);
-                       if (empty($contact)) {
-                               return 0;
-                       }
-
-                       $data = array_merge($data, $contact);
+               // Take the default values when probing failed
+               if (!empty($default) && !in_array($data["network"], array_merge(Protocol::NATIVE_SUPPORT, [Protocol::PUMPIO]))) {
+                       $data = array_merge($data, $default);
                }
 
                if (empty($data)) {
@@ -1388,6 +1407,7 @@ class Contact extends BaseObject
                                'request'   => defaults($data, 'request', ''),
                                'confirm'   => defaults($data, 'confirm', ''),
                                'poco'      => defaults($data, 'poco', ''),
+                               'baseurl'   => defaults($data, 'baseurl', ''),
                                'name-date' => DateTimeFormat::utcNow(),
                                'uri-date'  => DateTimeFormat::utcNow(),
                                'avatar-date' => DateTimeFormat::utcNow(),
@@ -1410,7 +1430,7 @@ class Contact extends BaseObject
 
                        // Update in the background when we fetched the data solely from the database
                        if ($background_update) {
-                               Worker::add(PRIORITY_LOW, "UpdateContact", $contact_id);
+                               Worker::add(PRIORITY_LOW, "UpdateContact", $contact_id, ($uid == 0 ? 'force' : ''));
                        }
 
                        // Update the newly created contact from data in the gcontact table
@@ -1437,11 +1457,11 @@ class Contact extends BaseObject
                        }
                }
 
-               if (!empty($data['photo'])) {
+               if (!empty($data['photo']) && ($data['network'] != Protocol::FEED)) {
                        self::updateAvatar($data['photo'], $uid, $contact_id);
                }
 
-               $fields = ['url', 'nurl', 'addr', 'alias', 'name', 'nick', 'keywords', 'location', 'about', 'avatar-date', 'pubkey'];
+               $fields = ['url', 'nurl', 'addr', 'alias', 'name', 'nick', 'keywords', 'location', 'about', 'avatar-date', 'pubkey', 'baseurl'];
                $contact = DBA::selectFirst('contact', $fields, ['id' => $contact_id]);
 
                // This condition should always be true
@@ -1449,13 +1469,18 @@ class Contact extends BaseObject
                        return $contact_id;
                }
 
-               $updated = ['addr' => $data['addr'],
+               $updated = [
+                       'addr' => $data['addr'] ?? '',
                        'alias' => defaults($data, 'alias', ''),
                        'url' => $data['url'],
                        'nurl' => Strings::normaliseLink($data['url']),
                        'name' => $data['name'],
-                       'nick' => $data['nick']];
+                       'nick' => $data['nick']
+               ];
 
+               if (!empty($data['baseurl'])) {
+                       $updated['baseurl'] = $data['baseurl'];
+               }
                if (!empty($data['keywords'])) {
                        $updated['keywords'] = $data['keywords'];
                }
@@ -1484,11 +1509,11 @@ class Contact extends BaseObject
                }
 
                // Only fill the pubkey if it had been empty before. We have to prevent identity theft.
-               if (empty($contact['pubkey'])) {
+               if (empty($contact['pubkey']) && !empty($data['pubkey'])) {
                        $updated['pubkey'] = $data['pubkey'];
                }
 
-               if (($data['addr'] != $contact['addr']) || (!empty($data['alias']) && ($data['alias'] != $contact['alias']))) {
+               if (($updated['addr'] != $contact['addr']) || (!empty($data['alias']) && ($data['alias'] != $contact['alias']))) {
                        $updated['uri-date'] = DateTimeFormat::utcNow();
                }
                if (($data["name"] != $contact["name"]) || ($data["nick"] != $contact["nick"])) {
@@ -1499,6 +1524,11 @@ class Contact extends BaseObject
 
                DBA::update('contact', $updated, ['id' => $contact_id], $contact);
 
+               if (!$background_update && ($uid == 0)) {
+                       // Update the gcontact entry
+                       GContact::updateFromPublicContactID($contact_id);
+               }
+
                return $contact_id;
        }
 
@@ -1570,7 +1600,7 @@ class Contact extends BaseObject
                        return '';
                }
 
-               if (in_array($contact["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
+               if (empty($contact["network"]) || in_array($contact["network"], Protocol::FEDERATED)) {
                        $sql = "(`item`.`uid` = 0 OR (`item`.`uid` = ? AND NOT `item`.`global`))";
                } else {
                        $sql = "`item`.`uid` = ?";
@@ -1588,7 +1618,7 @@ class Contact extends BaseObject
 
                $pager = new Pager($a->query_string);
 
-               $params = ['order' => ['created' => true],
+               $params = ['order' => ['received' => true],
                        'limit' => [$pager->getStart(), $pager->getItemsPerPage()]];
 
                if ($thread_mode) {
@@ -1709,7 +1739,7 @@ class Contact extends BaseObject
         */
        public static function updateAvatar($avatar, $uid, $cid, $force = false)
        {
-               $contact = DBA::selectFirst('contact', ['avatar', 'photo', 'thumb', 'micro', 'nurl'], ['id' => $cid]);
+               $contact = DBA::selectFirst('contact', ['avatar', 'photo', 'thumb', 'micro', 'nurl'], ['id' => $cid, 'self' => false]);
                if (!DBA::isResult($contact)) {
                        return false;
                } else {
@@ -1720,17 +1750,14 @@ class Contact extends BaseObject
                        $photos = Photo::importProfilePhoto($avatar, $uid, $cid, true);
 
                        if ($photos) {
-                               DBA::update(
-                                       'contact',
-                                       ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()],
-                                       ['id' => $cid]
-                               );
+                               $fields = ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()];
+                               DBA::update('contact', $fields, ['id' => $cid]);
 
                                // Update the public contact (contact id = 0)
                                if ($uid != 0) {
                                        $pcontact = DBA::selectFirst('contact', ['id'], ['nurl' => $contact['nurl'], 'uid' => 0]);
                                        if (DBA::isResult($pcontact)) {
-                                               self::updateAvatar($avatar, 0, $pcontact['id'], $force);
+                                               DBA::update('contact', $fields, ['id' => $pcontact['id']]);
                                        }
                                }
 
@@ -1741,6 +1768,103 @@ class Contact extends BaseObject
                return $data;
        }
 
+        /**
+        * @brief Helper function for "updateFromProbe". Updates personal and public contact
+        *
+        * @param array $contact The personal contact entry
+        * @param array $fields  The fields that are updated
+        * @throws \Exception
+        */
+       private static function updateContact($id, $uid, $url, array $fields)
+       {
+               DBA::update('contact', $fields, ['id' => $id]);
+
+               // Search for duplicated contacts and get rid of them
+               if (self::handleDuplicates(Strings::normaliseLink($url), $uid, $id) || ($uid != 0)) {
+                       return;
+               }
+
+               // Update the corresponding gcontact entry
+               GContact::updateFromPublicContactID($id);
+
+               // Archive or unarchive the contact. We only need to do this for the public contact.
+               // The archive/unarchive function will update the personal contacts by themselves.
+               $contact = DBA::selectFirst('contact', [], ['id' => $id]);
+               if (!empty($fields['success_update'])) {
+                       self::unmarkForArchival($contact);
+               } elseif (!empty($fields['failure_update'])) {
+                       self::markForArchival($contact);
+               }
+
+               $condition = ['self' => false, 'nurl' => Strings::normaliseLink($url), 'network' => Protocol::FEDERATED];
+
+               // These contacts are sharing with us, we don't poll them.
+               // This means that we don't set the update fields in "OnePoll.php".
+               $condition['rel'] = self::SHARING;
+               DBA::update('contact', $fields, $condition);
+
+               unset($fields['last-update']);
+               unset($fields['success_update']);
+               unset($fields['failure_update']);
+
+               if (empty($fields)) {
+                       return;
+               }
+
+               // We are polling these contacts, so we mustn't set the update fields here.
+               $condition['rel'] = [self::FOLLOWER, self::FRIEND];
+               DBA::update('contact', $fields, $condition);
+       }
+
+        /**
+        * @brief Helper function for "updateFromProbe". Remove duplicated contacts
+        *
+        * @param string  $nurl  Normalised contact url
+        * @param integer $uid   User id
+        * @param integer $id    Contact id of a duplicate
+        * @throws \Exception
+        */
+       private static function handleDuplicates($nurl, $uid, $id)
+       {
+               $condition = ['nurl' => $nurl, 'uid' => $uid, 'deleted' => false];
+               $count = DBA::count('contact', $condition);
+               if ($count <= 1) {
+                       return false;
+               }
+
+               $first_contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
+               if (!DBA::isResult($first_contact)) {
+                       // Shouldn't happen - so we handle it
+                       return false;
+               }
+
+               $first = $first_contact['id'];
+               Logger::info('Found duplicates', ['count' => $count, 'id' => $id, 'first' => $first, 'uid' => $uid, 'nurl' => $nurl, 'callstack' => System::callstack(20)]);
+               if ($uid != 0) {
+                       // Don't handle non public duplicates by now
+                       Logger::info('Not handling non public duplicate', ['uid' => $uid, 'nurl' => $nurl]);
+                       return false;
+               }
+
+               // Find all duplicates
+               $condition = ["`nurl` = ? AND `uid` = ? AND `id` != ? AND NOT `self` AND NOT `deleted`", $nurl, $uid, $first];
+               $duplicates = DBA::select('contact', ['id'], $condition);
+               while ($duplicate = DBA::fetch($duplicates)) {
+                       $dup_id = $duplicate['id'];
+                       Logger::info('Handling duplicate', ['search' => $dup_id, 'replace' => $first]);
+
+                       // Search and replace
+                       DBA::update('item',['author-id' => $first], ['author-id' => $dup_id]);
+                       DBA::update('item',['owner-id' => $first], ['owner-id' => $dup_id]);
+                       DBA::update('item',['contact-id' => $first], ['contact-id' => $dup_id]);
+
+                       // Remove the duplicate
+                       DBA::delete('contact', ['id' => $dup_id]);
+               }
+               Logger::info('Duplicates handled', ['uid' => $uid, 'nurl' => $nurl]);
+               return true;
+       }
+
        /**
         * @param integer $id      contact id
         * @param string  $network Optional network we are probing for
@@ -1753,11 +1877,15 @@ class Contact extends BaseObject
        {
                /*
                  Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
-                 This will reliably kill your communication with Friendica contacts.
+                 This will reliably kill your communication with old Friendica contacts.
                 */
 
-               $fields = ['avatar', 'uid', 'name', 'nick', 'url', 'addr', 'batch', 'notify',
-                       'poll', 'request', 'confirm', 'poco', 'network', 'alias'];
+               // These fields aren't updated by this routine:
+               // 'xmpp', 'sensitive'
+
+               $fields = ['uid', 'avatar', 'name', 'nick', 'location', 'keywords', 'about', 'gender',
+                       'unsearchable', 'url', 'addr', 'batch', 'notify', 'poll', 'request', 'confirm', 'poco',
+                       'network', 'alias', 'baseurl', 'forum', 'prv', 'contact-type'];
                $contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
                if (!DBA::isResult($contact)) {
                        return false;
@@ -1771,46 +1899,87 @@ class Contact extends BaseObject
 
                $ret = Probe::uri($contact['url'], $network, $uid, !$force);
 
+               $updated = DateTimeFormat::utcNow();
+
                // If Probe::uri fails the network code will be different (mostly "feed" or "unkn")
-               if (in_array($ret['network'], [Protocol::FEED, Protocol::PHANTOM]) && ($ret['network'] != $contact['network'])) {
+               if (!in_array($ret['network'], Protocol::NATIVE_SUPPORT) ||
+                       (in_array($ret['network'], [Protocol::FEED, Protocol::PHANTOM]) && ($ret['network'] != $contact['network']))) {
+                       if ($force && ($uid == 0)) {
+                               self::updateContact($id, $uid, $ret['url'], ['last-update' => $updated, 'failure_update' => $updated]);
+                       }
                        return false;
                }
 
-               if (!in_array($ret['network'], Protocol::NATIVE_SUPPORT)) {
-                       return false;
+               if (isset($ret['hide']) && is_bool($ret['hide'])) {
+                       $ret['unsearchable'] = $ret['hide'];
+               }
+
+               if (isset($ret['account-type']) && is_int($ret['account-type'])) {
+                       $ret['forum'] = false;
+                       $ret['prv'] = false;
+                       $ret['contact-type'] = $ret['account-type'];
+                       if ($ret['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) {
+                               $apcontact = APContact::getByURL($ret['url'], false);
+                               if (isset($apcontact['manually-approve'])) {
+                                       $ret['forum'] = (bool)!$apcontact['manually-approve'];
+                                       $ret['prv'] = (bool)!$ret['forum'];
+                               }
+                       }
                }
 
                $update = false;
 
-               // make sure to not overwrite existing values with blank entries
+               // make sure to not overwrite existing values with blank entries except some technical fields
+               $keep = ['batch', 'notify', 'poll', 'request', 'confirm', 'poco', 'baseurl'];
                foreach ($ret as $key => $val) {
-                       if (!isset($contact[$key])) {
+                       if (!array_key_exists($key, $contact)) {
                                unset($ret[$key]);
-                       } elseif (($contact[$key] != '') && ($val == '')) {
+                       } elseif (($contact[$key] != '') && ($val == '') && !is_bool($ret[$key]) && !in_array($key, $keep)) {
                                $ret[$key] = $contact[$key];
                        } elseif ($ret[$key] != $contact[$key]) {
                                $update = true;
                        }
                }
 
+               if ($ret['network'] != Protocol::FEED) {
+                       self::updateAvatar($ret['photo'], $uid, $id, $update || $force);
+               }
+
                if (!$update) {
+                       if ($force && ($uid == 0)) {
+                               self::updateContact($id, $uid, $ret['url'], ['last-update' => $updated, 'success_update' => $updated]);
+                       }
                        return true;
                }
 
                $ret['nurl'] = Strings::normaliseLink($ret['url']);
-               $ret['updated'] = DateTimeFormat::utcNow();
+               $ret['updated'] = $updated;
 
-               self::updateAvatar($ret['photo'], $uid, $id, true);
+               if ($force && ($uid == 0)) {
+                       $ret['last-update'] = $updated;
+                       $ret['success_update'] = $updated;
+               }
 
                unset($ret['photo']);
-               DBA::update('contact', $ret, ['id' => $id]);
 
-               // Update the corresponding gcontact entry
-               PortableContact::lastUpdated($ret["url"]);
+               self::updateContact($id, $uid, $ret['url'], $ret);
 
                return true;
        }
 
+       public static function updateFromProbeByURL($url, $force = false)
+       {
+               $id = self::getIdForURL($url);
+
+               if (empty($id)) {
+                       return $id;
+               }
+
+               self::updateFromProbe($id, '', $force);
+
+               return $id;
+       }
+
        /**
         * Detects if a given contact array belongs to a legacy DFRN connection
         *
@@ -2009,6 +2178,7 @@ class Contact extends BaseObject
                                'name'    => $ret['name'],
                                'nick'    => $ret['nick'],
                                'network' => $ret['network'],
+                               'baseurl' => $ret['baseurl'],
                                'protocol' => $protocol,
                                'pubkey'  => $ret['pubkey'],
                                'rel'     => $new_relation,
@@ -2137,7 +2307,7 @@ class Contact extends BaseObject
                        return false;
                }
 
-               $fields = ['url', 'name', 'nick', 'photo', 'network', 'blocked'];
+               $fields = ['url', 'name', 'nick', 'avatar', 'photo', 'network', 'blocked'];
                $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
                if (!DBA::isResult($pub_contact)) {
                        // Should never happen
@@ -2151,15 +2321,16 @@ class Contact extends BaseObject
 
                $url = defaults($datarray, 'author-link', $pub_contact['url']);
                $name = $pub_contact['name'];
-               $photo = $pub_contact['photo'];
+               $photo = defaults($pub_contact, 'avatar', $pub_contact["photo"]);
                $nick = $pub_contact['nick'];
                $network = $pub_contact['network'];
 
                if (!empty($contact)) {
-            // Contact is blocked at user-level
-                   if (self::isBlockedByUser($contact['id'], $importer['id'])) {
-                       return false;
-            }
+                       // Contact is blocked at user-level
+                       if (!empty($contact['id']) && !empty($importer['id']) &&
+                               self::isBlockedByUser($contact['id'], $importer['id'])) {
+                               return false;
+                       }
 
                        // Make sure that the existing contact isn't archived
                        self::unmarkForArchival($contact);
@@ -2355,6 +2526,9 @@ class Contact extends BaseObject
                        return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
                }
 
+               // Prevents endless loop in case only a non-public contact exists for the contact URL
+               unset($data['uid']);
+
                return self::magicLinkByContact($data, $contact_url);
        }
 
@@ -2444,4 +2618,18 @@ class Contact extends BaseObject
                // Is it a forum?
                return ($contact['forum'] || $contact['prv']);
        }
+
+       /**
+        * Can the remote contact receive private messages?
+        *
+        * @param array $contact
+        * @return bool
+        */
+       public static function canReceivePrivateMessages(array $contact)
+       {
+               $protocol = $contact['network'] ?? $contact['protocol'] ?? Protocol::PHANTOM;
+               $self = $contact['self'] ?? false;
+
+               return in_array($protocol, [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB]) && !$self;
+       }
 }