Strings::normaliseLink($server_url)]); if (DBA::isResult($gserver)) { if ($gserver['created'] <= DBA::NULL_DATETIME) { $fields = ['created' => DateTimeFormat::utcNow()]; $condition = ['nurl' => Strings::normaliseLink($server_url)]; DBA::update('gserver', $fields, $condition); } $last_contact = $gserver["last_contact"]; $last_failure = $gserver["last_failure"]; // See discussion under https://forum.friendi.ca/display/0b6b25a8135aabc37a5a0f5684081633 // It can happen that a zero date is in the database, but storing it again is forbidden. if ($last_contact < DBA::NULL_DATETIME) { $last_contact = DBA::NULL_DATETIME; } if ($last_failure < DBA::NULL_DATETIME) { $last_failure = DBA::NULL_DATETIME; } if (!$force && !PortableContact::updateNeeded($gserver['created'], '', $last_failure, $last_contact)) { Logger::info('No update needed', ['server' => $server_url]); return ($last_contact >= $last_failure); } Logger::info('Server is outdated. Start discovery.', ['Server' => $server_url, 'Force' => $force, 'Created' => $gserver['created'], 'Failure' => $last_failure, 'Contact' => $last_contact]); } else { Logger::info('Server is unknown. Start discovery.', ['Server' => $server_url]); } return self::detect($server_url, $network); } /** * Detect server data (type, protocol, version number, ...) * The detected data is then updated or inserted in the gserver table. * * @param string $url Server url * * @return boolean 'true' if server could be detected */ public static function detect($url, $network = '') { $serverdata = []; // When a nodeinfo is present, we don't need to dig further $xrd_timeout = Config::get('system', 'xrd_timeout'); $curlResult = Network::curl($url . '/.well-known/nodeinfo', false, ['timeout' => $xrd_timeout]); if ($curlResult->isTimeout()) { DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($url)]); return false; } $nodeinfo = self::fetchNodeinfo($url, $curlResult); // When nodeinfo isn't present, we use the older 'statistics.json' endpoint if (empty($nodeinfo)) { $nodeinfo = self::fetchStatistics($url); } // If that didn't work out well, we use some protocol specific endpoints if (empty($nodeinfo) || empty($nodeinfo['network']) || ($nodeinfo['network'] == Protocol::DFRN)) { // Fetch the landing page, possibly it reveals some data $curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout]); if ($curlResult->isSuccess()) { $serverdata = self::analyseRootHeader($curlResult, $serverdata); $serverdata = self::analyseRootBody($curlResult, $serverdata); } if (!$curlResult->isSuccess() || empty($curlResult->getBody())) { DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($url)]); return false; } if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::DFRN)) { $serverdata = self::detectFriendica($url, $serverdata); } if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ACTIVITYPUB)) { $serverdata = self::detectMastodonAlikes($url, $serverdata); } // the 'siteinfo.json' is some specific endpoint of Hubzilla and Red if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ZOT)) { $serverdata = self::fetchSiteinfo($url, $serverdata); } // The 'siteinfo.json' doesn't seem to be present on older Hubzilla installations if (empty($serverdata['network'])) { $serverdata = self::detectHubzilla($url, $serverdata); } if (empty($serverdata['network'])) { $serverdata = self::detectNextcloud($url, $serverdata); } if (empty($serverdata['network'])) { $serverdata = self::detectGNUSocial($url, $serverdata); } } else { $serverdata = $nodeinfo; } $serverdata = self::checkPoCo($url, $serverdata); // We can't detect the network type. Possibly it is some system that we don't know yet if (empty($serverdata['network'])) { $serverdata['network'] = Protocol::PHANTOM; } // Check host-meta for phantom networks. // Although this is not needed, it is a good indicator for a living system, // since most systems had implemented it. if (($serverdata['network'] == Protocol::PHANTOM) && !self::validHostMeta($url)) { DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($url)]); return false; } $serverdata['url'] = $url; $serverdata['nurl'] = Strings::normaliseLink($url); // We take the highest number that we do find $registeredUsers = $serverdata['registered-users'] ?? 0; // On an active server there has to be at least a single user if (($serverdata['network'] != Protocol::PHANTOM) && ($registeredUsers == 0)) { $registeredUsers = 1; } $gcontacts = DBA::count('gcontact', ['server_url' => [$url, $serverdata['nurl']]]); $apcontacts = DBA::count('apcontact', ['baseurl' => [$url, $serverdata['nurl']]]); $contacts = DBA::count('contact', ['uid' => 0, 'baseurl' => [$url, $serverdata['nurl']]]); $serverdata['registered-users'] = max($gcontacts, $apcontacts, $contacts, $registeredUsers); $serverdata['last_contact'] = DateTimeFormat::utcNow(); if (!DBA::exists('gserver', ['nurl' => Strings::normaliseLink($url)])) { $serverdata['created'] = DateTimeFormat::utcNow(); $ret = DBA::insert('gserver', $serverdata); } else { $ret = DBA::update('gserver', $serverdata, ['nurl' => $serverdata['nurl']]); } if (in_array($serverdata['network'], [Protocol::DFRN, Protocol::DIASPORA])) { self::discoverRelay($url); } return $ret; } /** * @brief Fetch relay data from a given server url * * @param string $server_url address of the server * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ private static function discoverRelay($server_url) { Logger::info('Discover relay data', ['server' => $server_url]); $curlResult = Network::curl($server_url . '/.well-known/x-social-relay'); if (!$curlResult->isSuccess()) { return; } $data = json_decode($curlResult->getBody(), true); if (!is_array($data)) { return; } $gserver = DBA::selectFirst('gserver', ['id', 'relay-subscribe', 'relay-scope'], ['nurl' => Strings::normaliseLink($server_url)]); if (!DBA::isResult($gserver)) { return; } if (($gserver['relay-subscribe'] != $data['subscribe']) || ($gserver['relay-scope'] != $data['scope'])) { $fields = ['relay-subscribe' => $data['subscribe'], 'relay-scope' => $data['scope']]; DBA::update('gserver', $fields, ['id' => $gserver['id']]); } DBA::delete('gserver-tag', ['gserver-id' => $gserver['id']]); if ($data['scope'] == 'tags') { // Avoid duplicates $tags = []; foreach ($data['tags'] as $tag) { $tag = mb_strtolower($tag); if (strlen($tag) < 100) { $tags[$tag] = $tag; } } foreach ($tags as $tag) { DBA::insert('gserver-tag', ['gserver-id' => $gserver['id'], 'tag' => $tag], true); } } // Create or update the relay contact $fields = []; if (isset($data['protocols'])) { if (isset($data['protocols']['diaspora'])) { $fields['network'] = Protocol::DIASPORA; if (isset($data['protocols']['diaspora']['receive'])) { $fields['batch'] = $data['protocols']['diaspora']['receive']; } elseif (is_string($data['protocols']['diaspora'])) { $fields['batch'] = $data['protocols']['diaspora']; } } if (isset($data['protocols']['dfrn'])) { $fields['network'] = Protocol::DFRN; if (isset($data['protocols']['dfrn']['receive'])) { $fields['batch'] = $data['protocols']['dfrn']['receive']; } elseif (is_string($data['protocols']['dfrn'])) { $fields['batch'] = $data['protocols']['dfrn']; } } } Diaspora::setRelayContact($server_url, $fields); } private static function fetchStatistics($url) { $curlResult = Network::curl($url . '/statistics.json'); if (!$curlResult->isSuccess()) { return []; } $data = json_decode($curlResult->getBody(), true); if (empty($data)) { return []; } $serverdata = []; if (!empty($data['version'])) { $serverdata['version'] = $data['version']; // Version numbers on statistics.json are presented with additional info, e.g.: // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191. $serverdata['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $serverdata['version']); } if (!empty($data['name'])) { $serverdata['site_name'] = $data['name']; } if (!empty($data['network'])) { $serverdata['platform'] = $data['network']; if ($serverdata['platform'] == 'Diaspora') { $serverdata['network'] = Protocol::DIASPORA; } elseif ($serverdata['platform'] == 'Friendica') { $serverdata['network'] = Protocol::DFRN; } elseif ($serverdata['platform'] == 'hubzilla') { $serverdata['network'] = Protocol::ZOT; } elseif ($serverdata['platform'] == 'redmatrix') { $serverdata['network'] = Protocol::ZOT; } } if (!empty($data['registrations_open'])) { $serverdata['register_policy'] = Register::OPEN; } else { $serverdata['register_policy'] = Register::CLOSED; } return $serverdata; } /** * @brief Detect server type by using the nodeinfo data * * @param string $url address of the server * @return array Server data * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ private static function fetchNodeinfo($url, $curlResult) { $nodeinfo = json_decode($curlResult->getBody(), true); if (!is_array($nodeinfo) || empty($nodeinfo['links'])) { return []; } $nodeinfo1_url = ''; $nodeinfo2_url = ''; foreach ($nodeinfo['links'] as $link) { if (!is_array($link) || empty($link['rel']) || empty($link['href'])) { Logger::info('Invalid nodeinfo format', ['url' => $url]); continue; } if ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/1.0') { $nodeinfo1_url = $link['href']; } elseif ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/2.0') { $nodeinfo2_url = $link['href']; } } if ($nodeinfo1_url . $nodeinfo2_url == '') { return []; } $server = []; // When the nodeinfo url isn't on the same host, then there is obviously something wrong if (!empty($nodeinfo2_url) && (parse_url($url, PHP_URL_HOST) == parse_url($nodeinfo2_url, PHP_URL_HOST))) { $server = self::parseNodeinfo2($nodeinfo2_url); } // When the nodeinfo url isn't on the same host, then there is obviously something wrong if (empty($server) && !empty($nodeinfo1_url) && (parse_url($url, PHP_URL_HOST) == parse_url($nodeinfo1_url, PHP_URL_HOST))) { $server = self::parseNodeinfo1($nodeinfo1_url); } return $server; } /** * @brief Parses Nodeinfo 1 * * @param string $nodeinfo_url address of the nodeinfo path * @return array Server data * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ private static function parseNodeinfo1($nodeinfo_url) { $curlResult = Network::curl($nodeinfo_url); if (!$curlResult->isSuccess()) { return false; } $nodeinfo = json_decode($curlResult->getBody(), true); if (!is_array($nodeinfo)) { return false; } $server = []; $server['register_policy'] = Register::CLOSED; if (!empty($nodeinfo['openRegistrations'])) { $server['register_policy'] = Register::OPEN; } if (is_array($nodeinfo['software'])) { if (!empty($nodeinfo['software']['name'])) { $server['platform'] = $nodeinfo['software']['name']; } if (!empty($nodeinfo['software']['version'])) { $server['version'] = $nodeinfo['software']['version']; // 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', $server['version']); } } if (!empty($nodeinfo['metadata']['nodeName'])) { $server['site_name'] = $nodeinfo['metadata']['nodeName']; } if (!empty($nodeinfo['usage']['users']['total'])) { $server['registered-users'] = $nodeinfo['usage']['users']['total']; } if (!empty($nodeinfo['protocols']['inbound']) && is_array($nodeinfo['protocols']['inbound'])) { $protocols = []; foreach ($nodeinfo['protocols']['inbound'] as $protocol) { $protocols[$protocol] = true; } if (!empty($protocols['friendica'])) { $server['network'] = Protocol::DFRN; } elseif (!empty($protocols['activitypub'])) { $server['network'] = Protocol::ACTIVITYPUB; } elseif (!empty($protocols['diaspora'])) { $server['network'] = Protocol::DIASPORA; } elseif (!empty($protocols['ostatus'])) { $server['network'] = Protocol::OSTATUS; } elseif (!empty($protocols['gnusocial'])) { $server['network'] = Protocol::OSTATUS; } elseif (!empty($protocols['zot'])) { $server['network'] = Protocol::ZOT; } } if (!$server) { return false; } return $server; } /** * @brief Parses Nodeinfo 2 * * @param string $nodeinfo_url address of the nodeinfo path * @return array Server data * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ private static function parseNodeinfo2($nodeinfo_url) { $curlResult = Network::curl($nodeinfo_url); if (!$curlResult->isSuccess()) { return false; } $nodeinfo = json_decode($curlResult->getBody(), true); if (!is_array($nodeinfo)) { return false; } $server = []; $server['register_policy'] = Register::CLOSED; if (!empty($nodeinfo['openRegistrations'])) { $server['register_policy'] = Register::OPEN; } if (is_array($nodeinfo['software'])) { if (!empty($nodeinfo['software']['name'])) { $server['platform'] = $nodeinfo['software']['name']; } if (!empty($nodeinfo['software']['version'])) { $server['version'] = $nodeinfo['software']['version']; // 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', $server['version']); } } if (!empty($nodeinfo['metadata']['nodeName'])) { $server['site_name'] = $nodeinfo['metadata']['nodeName']; } if (!empty($nodeinfo['usage']['users']['total'])) { $server['registered-users'] = $nodeinfo['usage']['users']['total']; } if (!empty($nodeinfo['protocols'])) { $protocols = []; foreach ($nodeinfo['protocols'] as $protocol) { $protocols[$protocol] = true; } if (!empty($protocols['friendica'])) { $server['network'] = Protocol::DFRN; } elseif (!empty($protocols['activitypub'])) { $server['network'] = Protocol::ACTIVITYPUB; } elseif (!empty($protocols['diaspora'])) { $server['network'] = Protocol::DIASPORA; } elseif (!empty($protocols['ostatus'])) { $server['network'] = Protocol::OSTATUS; } elseif (!empty($protocols['gnusocial'])) { $server['network'] = Protocol::OSTATUS; } elseif (!empty($protocols['zot'])) { $server['network'] = Protocol::ZOT; } } if (empty($server)) { return false; } return $server; } private static function fetchSiteinfo($url, $serverdata) { $curlResult = Network::curl($url . '/siteinfo.json'); if (!$curlResult->isSuccess()) { return $serverdata; } $data = json_decode($curlResult->getBody(), true); if (empty($data)) { return $serverdata; } if (!empty($data['url'])) { $serverdata['platform'] = $data['platform']; $serverdata['version'] = $data['version']; } if (!empty($data['plugins'])) { if (in_array('pubcrawl', $data['plugins'])) { $serverdata['network'] = Protocol::ACTIVITYPUB; } elseif (in_array('diaspora', $data['plugins'])) { $serverdata['network'] = Protocol::DIASPORA; } elseif (in_array('gnusoc', $data['plugins'])) { $serverdata['network'] = Protocol::OSTATUS; } else { $serverdata['network'] = Protocol::ZOT; } } if (!empty($data['site_name'])) { $serverdata['site_name'] = $data['site_name']; } if (!empty($data['channels_total'])) { $serverdata['registered-users'] = $data['channels_total']; } if (!empty($data['register_policy'])) { switch ($data['register_policy']) { case 'REGISTER_OPEN': $serverdata['register_policy'] = Register::OPEN; break; case 'REGISTER_APPROVE': $serverdata['register_policy'] = Register::APPROVE; break; case 'REGISTER_CLOSED': default: $serverdata['register_policy'] = Register::CLOSED; break; } } return $serverdata; } private static function validHostMeta($url) { $xrd_timeout = Config::get('system', 'xrd_timeout'); $curlResult = Network::curl($url . '/.well-known/host-meta', false, ['timeout' => $xrd_timeout]); if (!$curlResult->isSuccess()) { return false; } $xrd = XML::parseString($curlResult->getBody(), false); if (!is_object($xrd)) { return false; } $elements = XML::elementToArray($xrd); if (empty($elements) || empty($elements['xrd']) || empty($elements['xrd']['link'])) { return false; } $valid = false; foreach ($elements['xrd']['link'] as $link) { if (empty($link['rel']) || empty($link['type']) || empty($link['template'])) { continue; } if ($link['type'] == 'application/xrd+xml') { // When the webfinger host is the same like the system host, it should be ok. $valid = (parse_url($url, PHP_URL_HOST) == parse_url($link['template'], PHP_URL_HOST)); } } return $valid; } private static function checkPoCo($url, $serverdata) { $curlResult = Network::curl($url. '/poco'); if (!$curlResult->isSuccess()) { return $serverdata; } $data = json_decode($curlResult->getBody(), true); if (empty($data)) { return $serverdata; } if (!empty($data['totalResults'])) { $registeredUsers = $serverdata['registered-users'] ?? 0; $serverdata['registered-users'] = max($data['totalResults'], $registeredUsers); $serverdata['poco'] = $url . '/poco'; } else { $serverdata['poco'] = ''; } return $serverdata; } private static function detectNextcloud($url, $serverdata) { $curlResult = Network::curl($url . '/status.php'); if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) { return $serverdata; } $data = json_decode($curlResult->getBody(), true); if (empty($data)) { return $serverdata; } if (!empty($data['version'])) { $serverdata['platform'] = 'nextcloud'; $serverdata['version'] = $data['version']; $serverdata['network'] = Protocol::ACTIVITYPUB; } return $serverdata; } private static function detectMastodonAlikes($url, $serverdata) { $curlResult = Network::curl($url . '/api/v1/instance'); if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) { return $serverdata; } $data = json_decode($curlResult->getBody(), true); if (empty($data)) { return $serverdata; } if (!empty($data['version'])) { $serverdata['platform'] = 'mastodon'; $serverdata['version'] = defaults($data, 'version', ''); $serverdata['network'] = Protocol::ACTIVITYPUB; } if (!empty($data['title'])) { $serverdata['site_name'] = $data['title']; } if (!empty($data['description'])) { $serverdata['info'] = trim($data['description']); } if (!empty($data['stats']['user_count'])) { $serverdata['registered-users'] = $data['stats']['user_count']; } if (!empty($serverdata['version']) && preg_match('/.*?\(compatible;\s(.*)\s(.*)\)/ism', $serverdata['version'], $matches)) { $serverdata['platform'] = $matches[1]; $serverdata['version'] = $matches[2]; } if (!empty($serverdata['version']) && strstr($serverdata['version'], 'Pleroma')) { $serverdata['platform'] = 'pleroma'; $serverdata['version'] = trim(str_replace('Pleroma', '', $serverdata['version'])); } return $serverdata; } private static function detectHubzilla($url, $serverdata) { $curlResult = Network::curl($url . '/api/statusnet/config.json'); if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) { return $serverdata; } $data = json_decode($curlResult->getBody(), true); if (empty($data)) { return $serverdata; } if (!empty($data['site']['name'])) { $serverdata['site_name'] = $data['site']['name']; } if (!empty($data['site']['platform'])) { $serverdata['platform'] = $data['site']['platform']['PLATFORM_NAME']; $serverdata['version'] = $data['site']['platform']['STD_VERSION']; $serverdata['network'] = Protocol::ZOT; } if (!empty($data['site']['hubzilla'])) { $serverdata['platform'] = $data['site']['hubzilla']['PLATFORM_NAME']; $serverdata['version'] = $data['site']['hubzilla']['RED_VERSION']; $serverdata['network'] = Protocol::ZOT; } if (!empty($data['site']['redmatrix'])) { if (!empty($data['site']['redmatrix']['PLATFORM_NAME'])) { $serverdata['platform'] = $data['site']['redmatrix']['PLATFORM_NAME']; } elseif (!empty($data['site']['redmatrix']['RED_PLATFORM'])) { $serverdata['platform'] = $data['site']['redmatrix']['RED_PLATFORM']; } $serverdata['version'] = $data['site']['redmatrix']['RED_VERSION']; $serverdata['network'] = Protocol::ZOT; } $private = false; $inviteonly = false; $closed = false; if (!empty($data['site']['closed'])) { $closed = self::toBoolean($data['site']['closed']); } if (!empty($data['site']['private'])) { $private = self::toBoolean($data['site']['private']); } if (!empty($data['site']['inviteonly'])) { $inviteonly = self::toBoolean($data['site']['inviteonly']); } if (!$closed && !$private and $inviteonly) { $register_policy = Register::APPROVE; } elseif (!$closed && !$private) { $register_policy = Register::OPEN; } else { $register_policy = Register::CLOSED; } return $serverdata; } private static function toBoolean($val) { if (($val == 'true') || ($val == 1)) { return true; } elseif (($val == 'false') || ($val == 0)) { return false; } return $val; } private static function detectGNUSocial($url, $serverdata) { $curlResult = Network::curl($url . '/api/statusnet/version.json'); if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') && ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) { $serverdata['platform'] = 'StatusNet'; // Remove junk that some GNU Social servers return $serverdata['version'] = str_replace(chr(239).chr(187).chr(191), '', $curlResult->getBody()); $serverdata['version'] = trim($serverdata['version'], '"'); $serverdata['network'] = Protocol::OSTATUS; } // Test for GNU Social $curlResult = Network::curl($url . '/api/gnusocial/version.json'); if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') && ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) { $serverdata['platform'] = 'GNU Social'; // Remove junk that some GNU Social servers return $serverdata['version'] = str_replace(chr(239) . chr(187) . chr(191), '', $curlResult->getBody()); $serverdata['version'] = trim($serverdata['version'], '"'); $serverdata['network'] = Protocol::OSTATUS; } return $serverdata; } private static function detectFriendica($url, $serverdata) { $curlResult = Network::curl($url . '/friendica/json'); if (!$curlResult->isSuccess()) { $curlResult = Network::curl($url . '/friendika/json'); } if (!$curlResult->isSuccess()) { return $serverdata; } $data = json_decode($curlResult->getBody(), true); if (empty($data) || empty($data['version'])) { return $serverdata; } $serverdata['network'] = Protocol::DFRN; $serverdata['version'] = $data['version']; if (!empty($data['no_scrape_url'])) { $serverdata['noscrape'] = $data['no_scrape_url']; } if (!empty($data['site_name'])) { $serverdata['site_name'] = $data['site_name']; } if (!empty($data['info'])) { $serverdata['info'] = trim($data['info']); } $register_policy = defaults($data, 'register_policy', 'REGISTER_CLOSED'); switch ($register_policy) { case 'REGISTER_OPEN': $serverdata['register_policy'] = Register::OPEN; break; case 'REGISTER_APPROVE': $serverdata['register_policy'] = Register::APPROVE; break; case 'REGISTER_CLOSED': case 'REGISTER_INVITATION': $serverdata['register_policy'] = Register::CLOSED; break; default: Logger::info('Register policy is invalid', ['policy' => $register_policy, 'server' => $url]); $serverdata['register_policy'] = Register::CLOSED; break; } $serverdata['platform'] = defaults($data, 'platform', ''); return $serverdata; } private static function analyseRootBody($curlResult, $serverdata) { $doc = new DOMDocument(); @$doc->loadHTML($curlResult->getBody()); $xpath = new DOMXPath($doc); $title = trim(XML::getFirstNodeValue($xpath, '//head/title/text()')); if (!empty($title)) { $serverdata['site_name'] = $title; } $list = $xpath->query('//meta[@name]'); foreach ($list as $node) { $attr = []; if ($node->attributes->length) { foreach ($node->attributes as $attribute) { $attribute->value = trim($attribute->value); if (empty($attribute->value)) { continue; } $attr[$attribute->name] = $attribute->value; } if (empty($attr['name']) || empty($attr['content'])) { continue; } } if ($attr['name'] == 'description') { $serverdata['info'] = $attr['content']; } if ($attr['name'] == 'application-name') { $serverdata['platform'] = $attr['content']; if (in_array($attr['content'], ['Misskey', 'Write.as'])) { $serverdata['network'] = Protocol::ACTIVITYPUB; } } if ($attr['name'] == 'generator') { $serverdata['platform'] = $attr['content']; $version_part = explode(' ', $attr['content']); if (count($version_part) == 2) { if (in_array($version_part[0], ['WordPress'])) { $serverdata['platform'] = $version_part[0]; $serverdata['version'] = $version_part[1]; $serverdata['network'] = Protocol::ACTIVITYPUB; } if (in_array($version_part[0], ['Friendika', 'Friendica'])) { $serverdata['platform'] = $version_part[0]; $serverdata['version'] = $version_part[1]; $serverdata['network'] = Protocol::DFRN; } } } } $list = $xpath->query('//meta[@property]'); foreach ($list as $node) { $attr = []; if ($node->attributes->length) { foreach ($node->attributes as $attribute) { $attribute->value = trim($attribute->value); if (empty($attribute->value)) { continue; } $attr[$attribute->name] = $attribute->value; } if (empty($attr['property']) || empty($attr['content'])) { continue; } } if ($attr['property'] == 'og:site_name') { $serverdata['site_name'] = $attr['content']; } if ($attr['property'] == 'og:description') { $serverdata['info'] = $attr['content']; } if ($attr['property'] == 'og:platform') { $serverdata['platform'] = $attr['content']; if (in_array($attr['content'], ['PeerTube'])) { $serverdata['network'] = Protocol::ACTIVITYPUB; } } if ($attr['property'] == 'generator') { $serverdata['platform'] = $attr['content']; if (in_array($attr['content'], ['hubzilla'])) { // We later check which compatible protocol modules are loaded. $serverdata['network'] = Protocol::ZOT; } } } return $serverdata; } private static function analyseRootHeader($curlResult, $serverdata) { if ($curlResult->getHeader('server') == 'Mastodon') { $serverdata['platform'] = 'mastodon'; $serverdata['network'] = $network = Protocol::ACTIVITYPUB; } elseif ($curlResult->inHeader('x-diaspora-version')) { $serverdata['platform'] = 'diaspora'; $serverdata['network'] = $network = Protocol::DIASPORA; $serverdata['version'] = $curlResult->getHeader('x-diaspora-version'); } elseif ($curlResult->inHeader('x-friendica-version')) { $serverdata['platform'] = 'friendica'; $serverdata['network'] = $network = Protocol::DFRN; $serverdata['version'] = $curlResult->getHeader('x-friendica-version'); } return $serverdata; } }