3 * @copyright Copyright (C) 2010-2023, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Model;
27 use Friendica\Core\Logger;
28 use Friendica\Core\Protocol;
29 use Friendica\Core\Worker;
30 use Friendica\Database\Database;
31 use Friendica\Database\DBA;
33 use Friendica\Module\Register;
34 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
35 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
36 use Friendica\Network\HTTPClient\Capability\ICanHandleHttpResponses;
37 use Friendica\Network\Probe;
38 use Friendica\Protocol\ActivityPub;
39 use Friendica\Protocol\Relay;
40 use Friendica\Util\DateTimeFormat;
41 use Friendica\Util\JsonLD;
42 use Friendica\Util\Network;
43 use Friendica\Util\Strings;
44 use Friendica\Util\XML;
45 use Friendica\Network\HTTPException;
46 use Friendica\Worker\UpdateGServer;
47 use GuzzleHttp\Psr7\Uri;
48 use Psr\Http\Message\UriInterface;
51 * This class handles GServer related functions
58 const DT_MASTODON = 2;
60 // Methods to detect server types
62 // Non endpoint specific methods
63 const DETECT_MANUAL = 0;
64 const DETECT_HEADER = 1;
65 const DETECT_BODY = 2;
66 const DETECT_HOST_META = 3;
67 const DETECT_CONTACTS = 4;
68 const DETECT_AP_ACTOR = 5;
69 const DETECT_AP_COLLECTION = 6;
71 const DETECT_UNSPECIFIC = [self::DETECT_MANUAL, self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_HOST_META, self::DETECT_CONTACTS, self::DETECT_AP_ACTOR];
73 // Implementation specific endpoints
74 // @todo Possibly add Lemmy detection via the endpoint /api/v3/site
75 const DETECT_FRIENDIKA = 10;
76 const DETECT_FRIENDICA = 11;
77 const DETECT_STATUSNET = 12;
78 const DETECT_GNUSOCIAL = 13;
79 const DETECT_CONFIG_JSON = 14; // Statusnet, GNU Social, Older Hubzilla/Redmatrix
80 const DETECT_SITEINFO_JSON = 15; // Newer Hubzilla
81 const DETECT_MASTODON_API = 16;
82 const DETECT_STATUS_PHP = 17; // Nextcloud
83 const DETECT_V1_CONFIG = 18;
84 const DETECT_SYSTEM_ACTOR = 20; // Mistpark, Osada, Roadhouse, Zap
85 const DETECT_THREADS = 21;
87 // Standardized endpoints
88 const DETECT_STATISTICS_JSON = 100;
89 const DETECT_NODEINFO_1 = 101;
90 const DETECT_NODEINFO_2 = 102;
91 const DETECT_NODEINFO_210 = 103;
94 * Check for the existence of a server and adds it in the background if not existant
97 * @param boolean $only_nodeinfo
101 public static function add(string $url, bool $only_nodeinfo = false)
103 if (self::getID($url)) {
107 UpdateGServer::add(Worker::PRIORITY_LOW, $url, $only_nodeinfo);
111 * Get the ID for the given server URL
114 * @param boolean $no_check Don't check if the server hadn't been found
116 * @return int|null gserver id or NULL on empty URL or failed check
118 public static function getID(string $url, bool $no_check = false): ?int
120 $url = self::cleanURL($url);
126 $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => Strings::normaliseLink($url)]);
127 if (DBA::isResult($gserver)) {
128 Logger::debug('Got ID for URL', ['id' => $gserver['id'], 'url' => $url]);
130 if (Network::isUrlBlocked($url)) {
131 self::setBlockedById($gserver['id']);
133 self::setUnblockedById($gserver['id']);
136 return $gserver['id'];
139 if ($no_check || !self::check($url)) {
143 return self::getID($url, true);
147 * Retrieves all the servers which base domain are matching the provided domain pattern
149 * The pattern is a simple fnmatch() pattern with ? for single wildcard and * for multiple wildcard
151 * @param string $pattern
157 public static function listByDomainPattern(string $pattern): array
159 $likePattern = 'http://' . strtr($pattern, ['_' => '\_', '%' => '\%', '?' => '_', '*' => '%']);
161 // The SUBSTRING_INDEX returns everything before the eventual third /, which effectively trims an
162 // eventual server path and keep only the server domain which we're matching against the pattern.
163 $sql = "SELECT `gserver`.*, COUNT(*) AS `contacts`
165 LEFT JOIN `contact` ON `gserver`.`id` = `contact`.`gsid`
166 WHERE SUBSTRING_INDEX(`gserver`.`nurl`, '/', 3) LIKE ?
167 AND NOT `gserver`.`failed`
168 GROUP BY `gserver`.`id`";
170 $stmt = DI::dba()->p($sql, $likePattern);
172 return DI::dba()->toArray($stmt);
176 * Checks if the given server array is unreachable for a long time now
178 * @param integer $gsid
181 private static function isDefunct(array $gserver): bool
183 return ($gserver['failed'] || in_array($gserver['network'], Protocol::FEDERATED)) &&
184 ($gserver['last_contact'] >= $gserver['created']) &&
185 ($gserver['last_contact'] < $gserver['last_failure']) &&
186 ($gserver['last_contact'] < DateTimeFormat::utc('now - 90 days'));
190 * Checks if the given server id is unreachable for a long time now
192 * @param integer $gsid
195 public static function isDefunctById(int $gsid): bool
197 $gserver = DBA::selectFirst('gserver', ['url', 'next_contact', 'last_contact', 'last_failure', 'created', 'failed', 'network'], ['id' => $gsid]);
198 if (empty($gserver)) {
201 if (strtotime($gserver['next_contact']) < time()) {
202 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
205 return self::isDefunct($gserver);
210 * Checks if the given server id is reachable
212 * @param integer $gsid
215 public static function isReachableById(int $gsid): bool
217 $gserver = DBA::selectFirst('gserver', ['url', 'next_contact', 'failed', 'network'], ['id' => $gsid]);
218 if (empty($gserver)) {
221 if (strtotime($gserver['next_contact']) < time()) {
222 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
225 return !$gserver['failed'] && in_array($gserver['network'], Protocol::FEDERATED);
230 * Checks if the given server is reachable
232 * @param array $contact Contact that should be checked
234 * @return boolean 'true' if server seems vital
236 public static function reachable(array $contact): bool
238 if (!empty($contact['gsid'])) {
239 $gsid = $contact['gsid'];
240 } elseif (!empty($contact['baseurl'])) {
241 $server = $contact['baseurl'];
242 } elseif ($contact['network'] == Protocol::DIASPORA) {
243 $parts = (array)parse_url($contact['url']);
244 unset($parts['path']);
245 $server = (string)Uri::fromParts($parts);
251 $condition = ['id' => $gsid];
253 $condition = ['nurl' => Strings::normaliseLink($server)];
256 $gserver = DBA::selectFirst('gserver', ['url', 'next_contact', 'failed', 'network'], $condition);
257 if (empty($gserver)) {
260 $reachable = !$gserver['failed'] && in_array($gserver['network'], Protocol::FEDERATED);
261 $server = $gserver['url'];
264 if (!empty($server) && (empty($gserver) || strtotime($gserver['next_contact']) < time())) {
265 UpdateGServer::add(Worker::PRIORITY_LOW, $server);
272 * Calculate the next update day
274 * @param bool $success
275 * @param string $created
276 * @param string $last_contact
277 * @param bool $undetected
283 public static function getNextUpdateDate(bool $success, string $created = '', string $last_contact = '', bool $undetected = false): string
285 // On successful contact process check again next week when it is a detected system.
286 // When we haven't detected the system, it could be a static website or a really old system.
288 return DateTimeFormat::utc($undetected ? 'now +1 month' : 'now +7 day');
291 $now = strtotime(DateTimeFormat::utcNow());
293 if ($created > $last_contact) {
294 $contact_time = strtotime($created);
296 $contact_time = strtotime($last_contact);
299 // If the last contact was less than 6 hours before then try again in 6 hours
300 if (($now - $contact_time) < (60 * 60 * 6)) {
301 return DateTimeFormat::utc('now +6 hour');
304 // If the last contact was less than 12 hours before then try again in 12 hours
305 if (($now - $contact_time) < (60 * 60 * 12)) {
306 return DateTimeFormat::utc('now +12 hour');
309 // If the last contact was less than 24 hours before then try tomorrow again
310 if (($now - $contact_time) < (60 * 60 * 24)) {
311 return DateTimeFormat::utc('now +1 day');
314 // If the last contact was less than a week before then try again in a week
315 if (($now - $contact_time) < (60 * 60 * 24 * 7)) {
316 return DateTimeFormat::utc('now +1 week');
319 // If the last contact was less than two weeks before then try again in two week
320 if (($now - $contact_time) < (60 * 60 * 24 * 14)) {
321 return DateTimeFormat::utc('now +2 week');
324 // If the last contact was less than a month before then try again in a month
325 if (($now - $contact_time) < (60 * 60 * 24 * 30)) {
326 return DateTimeFormat::utc('now +1 month');
329 // The system hadn't been successful contacted for more than a month, so try again in three months
330 return DateTimeFormat::utc('now +3 month');
334 * Checks the state of the given server.
336 * @param string $server_url URL of the given server
337 * @param string $network Network value that is used, when detection failed
338 * @param boolean $force Force an update.
339 * @param boolean $only_nodeinfo Only use nodeinfo for server detection
341 * @return boolean 'true' if server seems vital
343 public static function check(string $server_url, string $network = '', bool $force = false, bool $only_nodeinfo = false): bool
345 $server_url = self::cleanURL($server_url);
346 if ($server_url == '') {
350 if (Network::isUrlBlocked($server_url)) {
351 Logger::info('Server is blocked', ['url' => $server_url]);
352 self::setBlockedByUrl($server_url);
356 $gserver = DBA::selectFirst('gserver', [], ['nurl' => Strings::normaliseLink($server_url)]);
357 if (DBA::isResult($gserver)) {
358 if ($gserver['created'] <= DBA::NULL_DATETIME) {
359 $fields = ['created' => DateTimeFormat::utcNow()];
360 $condition = ['nurl' => Strings::normaliseLink($server_url)];
361 self::update($fields, $condition);
364 if (!$force && (strtotime($gserver['next_contact']) > time())) {
365 Logger::info('No update needed', ['server' => $server_url]);
366 return (!$gserver['failed']);
368 Logger::info('Server is outdated. Start discovery.', ['Server' => $server_url, 'Force' => $force]);
370 Logger::info('Server is unknown. Start discovery.', ['Server' => $server_url]);
373 return self::detect($server_url, $network, $only_nodeinfo);
377 * Reset failed server status by gserver id
380 * @param string $network
382 public static function setReachableById(int $gsid, string $network)
384 $gserver = DBA::selectFirst('gserver', ['url', 'failed', 'next_contact', 'network'], ['id' => $gsid]);
385 if (!DBA::isResult($gserver)) {
389 $blocked = Network::isUrlBlocked($gserver['url']);
390 if ($gserver['failed']) {
391 $fields = ['failed' => false, 'blocked' => $blocked, 'last_contact' => DateTimeFormat::utcNow()];
392 if (!empty($network) && !in_array($gserver['network'], Protocol::FEDERATED)) {
393 $fields['network'] = $network;
395 self::update($fields, ['id' => $gsid]);
396 Logger::info('Reset failed status for server', ['url' => $gserver['url']]);
398 if (strtotime($gserver['next_contact']) < time()) {
399 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
401 } elseif ($blocked) {
402 self::setBlockedById($gsid);
404 self::setUnblockedById($gsid);
409 * Set failed server status by gserver id
413 public static function setFailureById(int $gsid)
415 $gserver = DBA::selectFirst('gserver', ['url', 'failed', 'next_contact'], ['id' => $gsid]);
416 if (DBA::isResult($gserver) && !$gserver['failed']) {
417 self::update(['failed' => true, 'blocked' => Network::isUrlBlocked($gserver['url']), 'last_failure' => DateTimeFormat::utcNow()], ['id' => $gsid]);
418 Logger::info('Set failed status for server', ['url' => $gserver['url']]);
420 if (strtotime($gserver['next_contact']) < time()) {
421 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
426 public static function setUnblockedById(int $gsid)
428 $gserver = DBA::selectFirst('gserver', ['url'], ["(`blocked` OR `blocked` IS NULL) AND `id` = ?", $gsid]);
429 if (DBA::isResult($gserver)) {
430 self::update(['blocked' => false], ['id' => $gsid]);
431 Logger::info('Set unblocked status for server', ['url' => $gserver['url']]);
435 public static function setBlockedById(int $gsid)
437 $gserver = DBA::selectFirst('gserver', ['url'], ["(NOT `blocked` OR `blocked` IS NULL) AND `id` = ?", $gsid]);
438 if (DBA::isResult($gserver)) {
439 self::update(['blocked' => true, 'failed' => true], ['id' => $gsid]);
440 Logger::info('Set blocked status for server', ['url' => $gserver['url']]);
444 public static function setBlockedByUrl(string $url)
446 $gserver = DBA::selectFirst('gserver', ['url', 'id'], ["(NOT `blocked` OR `blocked` IS NULL) AND `nurl` = ?", Strings::normaliseLink($url)]);
447 if (DBA::isResult($gserver)) {
448 self::update(['blocked' => true, 'failed' => true], ['id' => $gserver['id']]);
449 Logger::info('Set blocked status for server', ['url' => $gserver['url']]);
454 * Set failed server status
459 public static function setFailureByUrl(string $url)
461 $nurl = Strings::normaliseLink($url);
463 $gserver = DBA::selectFirst('gserver', [], ['nurl' => $nurl]);
464 if (DBA::isResult($gserver)) {
465 $next_update = self::getNextUpdateDate(false, $gserver['created'], $gserver['last_contact']);
466 self::update(['url' => $url, 'failed' => true, 'blocked' => Network::isUrlBlocked($url), 'last_failure' => DateTimeFormat::utcNow(),
467 'next_contact' => $next_update, 'network' => Protocol::PHANTOM, 'detection-method' => null],
469 Logger::info('Set failed status for existing server', ['url' => $url]);
470 if (self::isDefunct($gserver)) {
471 self::archiveContacts($gserver['id']);
476 self::insert(['url' => $url, 'nurl' => $nurl,
477 'network' => Protocol::PHANTOM, 'created' => DateTimeFormat::utcNow(),
478 'failed' => true, 'last_failure' => DateTimeFormat::utcNow()]);
479 Logger::info('Set failed status for new server', ['url' => $url]);
483 * Archive server related contacts and inboxes
485 * @param integer $gsid
488 private static function archiveContacts(int $gsid)
490 Contact::update(['archive' => true], ['gsid' => $gsid]);
491 DBA::update('inbox-status', ['archive' => true], ['gsid' => $gsid]);
495 * Remove unwanted content from the given URL
497 * @param string $dirtyUrl
499 * @return string cleaned URL
501 * @deprecated since 2023.03 Use cleanUri instead
503 public static function cleanURL(string $dirtyUrl): string
506 return (string)self::cleanUri(new Uri($dirtyUrl));
507 } catch (\Throwable $e) {
508 Logger::warning('Invalid URL', ['dirtyUrl' => $dirtyUrl]);
514 * Remove unwanted content from the given URI
516 * @param UriInterface $dirtyUri
518 * @return UriInterface cleaned URI
521 public static function cleanUri(UriInterface $dirtyUri): string
529 '#(?:^|/)index\.php#',
531 rtrim($dirtyUri->getPath(), '/')
537 * Detect server data (type, protocol, version number, ...)
538 * The detected data is then updated or inserted in the gserver table.
540 * @param string $url URL of the given server
541 * @param string $network Network value that is used, when detection failed
542 * @param boolean $only_nodeinfo Only use nodeinfo for server detection
544 * @return boolean 'true' if server could be detected
546 private static function detect(string $url, string $network = '', bool $only_nodeinfo = false): bool
548 Logger::info('Detect server type', ['server' => $url]);
550 $original_url = $url;
552 // Remove URL content that is not supposed to exist for a server url
553 $url = rtrim(self::cleanURL($url), '/');
555 Logger::notice('Empty URL.');
559 // If the URL mismatches, then we mark the old entry as failure
560 if (!Strings::compareLink($url, $original_url)) {
561 self::setFailureByUrl($original_url);
562 if (!self::getID($url, true) && !Network::isUrlBlocked($url)) {
563 self::detect($url, $network, $only_nodeinfo);
568 $valid_url = Network::isUrlValid($url);
570 self::setFailureByUrl($url);
573 $valid_url = rtrim($valid_url, '/');
576 if (!Strings::compareLink($url, $valid_url)) {
577 // We only follow redirects when the path stays the same or the target url has no path.
578 // Some systems have got redirects on their landing page to a single account page. This check handles it.
579 if (((parse_url($url, PHP_URL_HOST) != parse_url($valid_url, PHP_URL_HOST)) && (parse_url($url, PHP_URL_PATH) == parse_url($valid_url, PHP_URL_PATH))) ||
580 (((parse_url($url, PHP_URL_HOST) != parse_url($valid_url, PHP_URL_HOST)) || (parse_url($url, PHP_URL_PATH) != parse_url($valid_url, PHP_URL_PATH))) && empty(parse_url($valid_url, PHP_URL_PATH)))) {
581 Logger::debug('Found redirect. Mark old entry as failure', ['old' => $url, 'new' => $valid_url]);
582 self::setFailureByUrl($url);
583 if (!self::getID($valid_url, true) && !Network::isUrlBlocked($valid_url)) {
584 self::detect($valid_url, $network, $only_nodeinfo);
589 if ((parse_url($url, PHP_URL_HOST) != parse_url($valid_url, PHP_URL_HOST)) && (parse_url($url, PHP_URL_PATH) != parse_url($valid_url, PHP_URL_PATH)) &&
590 (parse_url($url, PHP_URL_PATH) == '')) {
591 Logger::debug('Found redirect. Mark old entry as failure and redirect to the basepath.', ['old' => $url, 'new' => $valid_url]);
592 $parts = (array)parse_url($valid_url);
593 unset($parts['path']);
594 $valid_url = (string)Uri::fromParts($parts);
596 self::setFailureByUrl($url);
597 if (!self::getID($valid_url, true) && !Network::isUrlBlocked($valid_url)) {
598 self::detect($valid_url, $network, $only_nodeinfo);
602 Logger::debug('Found redirect, but ignore it.', ['old' => $url, 'new' => $valid_url]);
605 if ((parse_url($url, PHP_URL_HOST) == parse_url($valid_url, PHP_URL_HOST)) &&
606 (parse_url($url, PHP_URL_PATH) == parse_url($valid_url, PHP_URL_PATH)) &&
607 (parse_url($url, PHP_URL_SCHEME) != parse_url($valid_url, PHP_URL_SCHEME))) {
611 $in_webroot = empty(parse_url($url, PHP_URL_PATH));
613 // When a nodeinfo is present, we don't need to dig further
614 $curlResult = DI::httpClient()->get($url . '/.well-known/x-nodeinfo2', HttpClientAccept::JSON);
615 if ($curlResult->isTimeout()) {
616 self::setFailureByUrl($url);
620 if (!empty($network) && !in_array($network, Protocol::NATIVE_SUPPORT)) {
621 $serverdata = ['detection-method' => self::DETECT_MANUAL, 'network' => $network, 'platform' => '', 'version' => '', 'site_name' => '', 'info' => ''];
623 $serverdata = self::parseNodeinfo210($curlResult);
624 if (empty($serverdata)) {
625 $curlResult = DI::httpClient()->get($url . '/.well-known/nodeinfo', HttpClientAccept::JSON);
626 $serverdata = self::fetchNodeinfo($url, $curlResult);
630 if ($only_nodeinfo && empty($serverdata)) {
631 Logger::info('Invalid nodeinfo in nodeinfo-mode, server is marked as failure', ['url' => $url]);
632 self::setFailureByUrl($url);
634 } elseif (empty($serverdata)) {
635 $serverdata = ['detection-method' => self::DETECT_MANUAL, 'network' => Protocol::PHANTOM, 'platform' => '', 'version' => '', 'site_name' => '', 'info' => ''];
638 // When there is no Nodeinfo, then use some protocol specific endpoints
639 if ($serverdata['network'] == Protocol::PHANTOM) {
641 // Fetch the landing page, possibly it reveals some data
642 $accept = 'application/activity+json,application/ld+json,application/json,*/*;q=0.9';
643 $curlResult = DI::httpClient()->get($url, $accept);
644 if (!$curlResult->isSuccess() && $curlResult->getReturnCode() == '406') {
645 $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML);
646 $html_fetched = true;
648 $html_fetched = false;
651 if ($curlResult->isSuccess()) {
652 $json = json_decode($curlResult->getBody(), true);
653 if (!empty($json) && is_array($json)) {
654 $data = self::fetchDataFromSystemActor($json, $serverdata);
655 $serverdata = $data['server'];
656 $systemactor = $data['actor'];
657 if (!$html_fetched && !in_array($serverdata['detection-method'], [self::DETECT_SYSTEM_ACTOR, self::DETECT_AP_COLLECTION])) {
658 $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML);
660 } elseif (!$html_fetched && (strlen($curlResult->getBody()) < 1000)) {
661 $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML);
664 if ($serverdata['detection-method'] != self::DETECT_SYSTEM_ACTOR) {
665 $serverdata = self::analyseRootHeader($curlResult, $serverdata);
666 $serverdata = self::analyseRootBody($curlResult, $serverdata);
670 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
671 self::setFailureByUrl($url);
675 if (in_array($url, ['https://www.threads.net', 'https://threads.net'])) {
676 $serverdata['detection-method'] = self::DETECT_THREADS;
677 $serverdata['network'] = Protocol::ACTIVITYPUB;
678 $serverdata['platform'] = 'threads';
681 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
682 $serverdata = self::detectMastodonAlikes($url, $serverdata);
686 // All following checks are done for systems that always have got a "host-meta" endpoint.
687 // With this check we don't have to waste time and resources for dead systems.
688 // Also this hopefully prevents us from receiving abuse messages.
689 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
690 $validHostMeta = self::validHostMeta($url);
692 $validHostMeta = false;
695 if ($validHostMeta) {
696 if (in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_HEADER, self::DETECT_BODY])) {
697 $serverdata['detection-method'] = self::DETECT_HOST_META;
700 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
701 $serverdata = self::detectFriendica($url, $serverdata);
704 // The following systems have to be installed in the root directory.
706 // the 'siteinfo.json' is some specific endpoint of Hubzilla and Red
707 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
708 $serverdata = self::fetchSiteinfo($url, $serverdata);
711 // The 'siteinfo.json' doesn't seem to be present on older Hubzilla installations, so we check other endpoints as well
712 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
713 $serverdata = self::detectHubzilla($url, $serverdata);
716 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
717 $serverdata = self::detectPeertube($url, $serverdata);
720 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
721 $serverdata = self::detectGNUSocial($url, $serverdata);
724 } elseif (in_array($serverdata['platform'], ['friendica', 'friendika']) && in_array($serverdata['detection-method'], array_merge(self::DETECT_UNSPECIFIC, [self::DETECT_SYSTEM_ACTOR]))) {
725 $serverdata = self::detectFriendica($url, $serverdata);
728 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
729 $serverdata = self::detectNextcloud($url, $serverdata, $validHostMeta);
732 // When nodeinfo isn't present, we use the older 'statistics.json' endpoint
733 // Since this endpoint is only rarely used, we query it at a later time
734 if (in_array($serverdata['detection-method'], array_merge(self::DETECT_UNSPECIFIC, [self::DETECT_FRIENDICA, self::DETECT_CONFIG_JSON]))) {
735 $serverdata = self::fetchStatistics($url, $serverdata);
739 // When we hadn't been able to detect the network type, we use the hint from the parameter
740 if (($serverdata['network'] == Protocol::PHANTOM) && !empty($network)) {
741 $serverdata['network'] = $network;
744 // Most servers aren't installed in a subdirectory, so we declare this entry as failed
745 if (($serverdata['network'] == Protocol::PHANTOM) && !empty(parse_url($url, PHP_URL_PATH)) && in_array($serverdata['detection-method'], [self::DETECT_MANUAL])) {
746 self::setFailureByUrl($url);
750 $serverdata['url'] = $url;
751 $serverdata['nurl'] = Strings::normaliseLink($url);
753 // We have to prevent an endless loop here.
754 // When a server is new, then there is no gserver entry yet.
755 // But in "detectNetworkViaContacts" it could happen that a contact is updated,
756 // and this can call this function here as well.
757 if (self::getID($url, true) && (in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]) ||
758 in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_HOST_META]))) {
759 $serverdata = self::detectNetworkViaContacts($url, $serverdata);
762 if (($serverdata['network'] == Protocol::PHANTOM) && in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_BODY])) {
763 self::setFailureByUrl($url);
767 if (empty($serverdata['version']) && in_array($serverdata['platform'], ['osada']) && in_array($serverdata['detection-method'], [self::DETECT_CONTACTS, self::DETECT_BODY])) {
768 $serverdata['version'] = self::getNomadVersion($url);
771 // Detect the directory type
772 $serverdata['directory-type'] = self::DT_NONE;
774 if (in_array($serverdata['network'], Protocol::FEDERATED)) {
775 $serverdata = self::checkMastodonDirectory($url, $serverdata);
777 if ($serverdata['directory-type'] == self::DT_NONE) {
778 $serverdata = self::checkPoCo($url, $serverdata);
782 if ($serverdata['network'] == Protocol::ACTIVITYPUB) {
783 $serverdata = self::fetchWeeklyUsage($url, $serverdata);
786 $serverdata['registered-users'] = $serverdata['registered-users'] ?? 0;
788 // Numbers above a reasonable value (10 millions) are ignored
789 if ($serverdata['registered-users'] > 10000000) {
790 $serverdata['registered-users'] = 0;
793 // On an active server there has to be at least a single user
794 if (!in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]) && ($serverdata['registered-users'] <= 0)) {
795 $serverdata['registered-users'] = 1;
796 } elseif (in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
797 $serverdata['registered-users'] = 0;
800 $serverdata['next_contact'] = self::getNextUpdateDate(true, '', '', in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]));
801 $serverdata['last_contact'] = DateTimeFormat::utcNow();
802 $serverdata['failed'] = false;
803 $serverdata['blocked'] = false;
805 $gserver = DBA::selectFirst('gserver', ['network'], ['nurl' => Strings::normaliseLink($url)]);
806 if (!DBA::isResult($gserver)) {
807 $serverdata['created'] = DateTimeFormat::utcNow();
808 $ret = self::insert($serverdata);
809 $id = DBA::lastInsertId();
811 $ret = self::update($serverdata, ['nurl' => $serverdata['nurl']]);
812 $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => $serverdata['nurl']]);
813 if (DBA::isResult($gserver)) {
814 $id = $gserver['id'];
818 // Count the number of known contacts from this server
819 if (!empty($id) && !in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
820 $apcontacts = DBA::count('apcontact', ['gsid' => $id]);
821 $contacts = DBA::count('contact', ['uid' => 0, 'gsid' => $id, 'failed' => false]);
822 $max_users = max($apcontacts, $contacts);
823 if ($max_users > $serverdata['registered-users']) {
824 Logger::info('Update registered users', ['id' => $id, 'url' => $serverdata['nurl'], 'registered-users' => $max_users]);
825 self::update(['registered-users' => $max_users], ['id' => $id]);
828 if (empty($serverdata['active-month-users'])) {
829 $contacts = DBA::count('contact', ["`uid` = ? AND `gsid` = ? AND NOT `failed` AND `last-item` > ?", 0, $id, DateTimeFormat::utc('now - 30 days')]);
831 Logger::info('Update monthly users', ['id' => $id, 'url' => $serverdata['nurl'], 'monthly-users' => $contacts]);
832 self::update(['active-month-users' => $contacts], ['id' => $id]);
836 if (empty($serverdata['active-halfyear-users'])) {
837 $contacts = DBA::count('contact', ["`uid` = ? AND `gsid` = ? AND NOT `failed` AND `last-item` > ?", 0, $id, DateTimeFormat::utc('now - 180 days')]);
839 Logger::info('Update halfyear users', ['id' => $id, 'url' => $serverdata['nurl'], 'halfyear-users' => $contacts]);
840 self::update(['active-halfyear-users' => $contacts], ['id' => $id]);
845 if (in_array($serverdata['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
846 self::discoverRelay($url);
849 if (!empty($systemactor)) {
850 $contact = Contact::getByURL($systemactor, true, ['gsid', 'baseurl', 'id', 'network', 'url', 'name']);
851 Logger::debug('Fetched system actor', ['url' => $url, 'gsid' => $id, 'contact' => $contact]);
858 * Fetch relay data from a given server url
860 * @param string $server_url address of the server
864 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
866 private static function discoverRelay(string $server_url)
868 Logger::info('Discover relay data', ['server' => $server_url]);
870 $curlResult = DI::httpClient()->get($server_url . '/.well-known/x-social-relay', HttpClientAccept::JSON);
871 if (!$curlResult->isSuccess()) {
875 $data = json_decode($curlResult->getBody(), true);
876 if (!is_array($data)) {
880 // Sanitize incoming data, see https://github.com/friendica/friendica/issues/8565
881 $data['subscribe'] = (bool)($data['subscribe'] ?? false);
883 if (!$data['subscribe'] || empty($data['scope']) || !in_array(strtolower($data['scope']), ['all', 'tags'])) {
885 $data['subscribe'] = false;
889 $gserver = DBA::selectFirst('gserver', ['id', 'url', 'network', 'relay-subscribe', 'relay-scope'], ['nurl' => Strings::normaliseLink($server_url)]);
890 if (!DBA::isResult($gserver)) {
894 if (($gserver['relay-subscribe'] != $data['subscribe']) || ($gserver['relay-scope'] != $data['scope'])) {
895 $fields = ['relay-subscribe' => $data['subscribe'], 'relay-scope' => $data['scope']];
896 self::update($fields, ['id' => $gserver['id']]);
899 DBA::delete('gserver-tag', ['gserver-id' => $gserver['id']]);
901 if ($data['scope'] == 'tags') {
904 foreach ($data['tags'] as $tag) {
905 $tag = mb_strtolower($tag);
906 if (strlen($tag) < 100) {
911 foreach ($tags as $tag) {
912 DBA::insert('gserver-tag', ['gserver-id' => $gserver['id'], 'tag' => $tag], Database::INSERT_IGNORE);
916 // Create or update the relay contact
918 if (isset($data['protocols'])) {
919 if (isset($data['protocols']['diaspora'])) {
920 $fields['network'] = Protocol::DIASPORA;
922 if (isset($data['protocols']['diaspora']['receive'])) {
923 $fields['batch'] = $data['protocols']['diaspora']['receive'];
924 } elseif (is_string($data['protocols']['diaspora'])) {
925 $fields['batch'] = $data['protocols']['diaspora'];
929 if (isset($data['protocols']['dfrn'])) {
930 $fields['network'] = Protocol::DFRN;
932 if (isset($data['protocols']['dfrn']['receive'])) {
933 $fields['batch'] = $data['protocols']['dfrn']['receive'];
934 } elseif (is_string($data['protocols']['dfrn'])) {
935 $fields['batch'] = $data['protocols']['dfrn'];
939 if (isset($data['protocols']['activitypub'])) {
940 $fields['network'] = Protocol::ACTIVITYPUB;
942 if (!empty($data['protocols']['activitypub']['actor'])) {
943 $fields['url'] = $data['protocols']['activitypub']['actor'];
945 if (!empty($data['protocols']['activitypub']['receive'])) {
946 $fields['batch'] = $data['protocols']['activitypub']['receive'];
951 Logger::info('Discovery ended', ['server' => $server_url, 'data' => $fields]);
953 Relay::updateContact($gserver, $fields);
957 * Fetch server data from '/statistics.json' on the given server
959 * @param string $url URL of the given server
961 * @return array server data
963 private static function fetchStatistics(string $url, array $serverdata): array
965 $curlResult = DI::httpClient()->get($url . '/statistics.json', HttpClientAccept::JSON);
966 if (!$curlResult->isSuccess()) {
970 $data = json_decode($curlResult->getBody(), true);
975 // Some AP enabled systems return activity data that we don't expect here.
976 if (strpos($curlResult->getContentType(), 'application/activity+json') !== false) {
981 $old_serverdata = $serverdata;
983 $serverdata['detection-method'] = self::DETECT_STATISTICS_JSON;
985 if (!empty($data['version'])) {
987 $serverdata['version'] = $data['version'];
988 // Version numbers on statistics.json are presented with additional info, e.g.:
989 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
990 $serverdata['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $serverdata['version']);
993 if (!empty($data['name'])) {
995 $serverdata['site_name'] = $data['name'];
998 if (!empty($data['network'])) {
1000 $serverdata['platform'] = strtolower($data['network']);
1002 if ($serverdata['platform'] == 'diaspora') {
1003 $serverdata['network'] = Protocol::DIASPORA;
1004 } elseif ($serverdata['platform'] == 'friendica') {
1005 $serverdata['network'] = Protocol::DFRN;
1006 } elseif ($serverdata['platform'] == 'hubzilla') {
1007 $serverdata['network'] = Protocol::ZOT;
1008 } elseif ($serverdata['platform'] == 'redmatrix') {
1009 $serverdata['network'] = Protocol::ZOT;
1013 if (!empty($data['total_users'])) {
1015 $serverdata['registered-users'] = max($data['total_users'], 1);
1018 if (!empty($data['active_users_monthly'])) {
1020 $serverdata['active-month-users'] = max($data['active_users_monthly'], 0);
1023 if (!empty($data['active_users_halfyear'])) {
1025 $serverdata['active-halfyear-users'] = max($data['active_users_halfyear'], 0);
1028 if (!empty($data['local_posts'])) {
1030 $serverdata['local-posts'] = max($data['local_posts'], 0);
1033 if (!empty($data['registrations_open'])) {
1034 $serverdata['register_policy'] = Register::OPEN;
1036 $serverdata['register_policy'] = Register::CLOSED;
1040 return $old_serverdata;
1047 * Detect server type by using the nodeinfo data
1049 * @param string $url address of the server
1050 * @param ICanHandleHttpResponses $httpResult
1052 * @return array Server data
1054 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1056 private static function fetchNodeinfo(string $url, ICanHandleHttpResponses $httpResult): array
1058 if (!$httpResult->isSuccess()) {
1062 $nodeinfo = json_decode($httpResult->getBody(), true);
1064 if (!is_array($nodeinfo) || empty($nodeinfo['links'])) {
1068 $nodeinfo1_url = '';
1069 $nodeinfo2_url = '';
1071 foreach ($nodeinfo['links'] as $link) {
1072 if (!is_array($link) || empty($link['rel']) || empty($link['href'])) {
1073 Logger::info('Invalid nodeinfo format', ['url' => $url]);
1077 if ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/1.0') {
1078 $nodeinfo1_url = Network::addBasePath($link['href'], $httpResult->getUrl());
1079 } elseif ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/2.0') {
1080 $nodeinfo2_url = Network::addBasePath($link['href'], $httpResult->getUrl());
1084 if ($nodeinfo1_url . $nodeinfo2_url == '') {
1090 if (!empty($nodeinfo2_url)) {
1091 $server = self::parseNodeinfo2($nodeinfo2_url);
1094 if (empty($server) && !empty($nodeinfo1_url)) {
1095 $server = self::parseNodeinfo1($nodeinfo1_url);
1104 * @param string $nodeinfo_url address of the nodeinfo path
1106 * @return array Server data
1108 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1110 private static function parseNodeinfo1(string $nodeinfo_url): array
1112 $curlResult = DI::httpClient()->get($nodeinfo_url, HttpClientAccept::JSON);
1113 if (!$curlResult->isSuccess()) {
1117 $nodeinfo = json_decode($curlResult->getBody(), true);
1119 if (!is_array($nodeinfo)) {
1123 $server = ['detection-method' => self::DETECT_NODEINFO_1,
1124 'register_policy' => Register::CLOSED];
1126 if (!empty($nodeinfo['openRegistrations'])) {
1127 $server['register_policy'] = Register::OPEN;
1130 if (is_array($nodeinfo['software'])) {
1131 if (!empty($nodeinfo['software']['name'])) {
1132 $server['platform'] = strtolower($nodeinfo['software']['name']);
1135 if (!empty($nodeinfo['software']['version'])) {
1136 $server['version'] = $nodeinfo['software']['version'];
1137 // Version numbers on Nodeinfo are presented with additional info, e.g.:
1138 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
1139 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
1143 if (!empty($nodeinfo['metadata']['nodeName'])) {
1144 $server['site_name'] = $nodeinfo['metadata']['nodeName'];
1147 if (!empty($nodeinfo['usage']['users']['total'])) {
1148 $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
1151 if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
1152 $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
1155 if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
1156 $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
1159 if (!empty($nodeinfo['usage']['localPosts'])) {
1160 $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
1163 if (!empty($nodeinfo['usage']['localComments'])) {
1164 $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
1167 if (!empty($nodeinfo['protocols']['inbound']) && is_array($nodeinfo['protocols']['inbound'])) {
1169 foreach ($nodeinfo['protocols']['inbound'] as $protocol) {
1170 $protocols[$protocol] = true;
1173 if (!empty($protocols['friendica'])) {
1174 $server['network'] = Protocol::DFRN;
1175 } elseif (!empty($protocols['activitypub'])) {
1176 $server['network'] = Protocol::ACTIVITYPUB;
1177 } elseif (!empty($protocols['diaspora'])) {
1178 $server['network'] = Protocol::DIASPORA;
1179 } elseif (!empty($protocols['ostatus'])) {
1180 $server['network'] = Protocol::OSTATUS;
1181 } elseif (!empty($protocols['gnusocial'])) {
1182 $server['network'] = Protocol::OSTATUS;
1183 } elseif (!empty($protocols['zot'])) {
1184 $server['network'] = Protocol::ZOT;
1188 if (empty($server)) {
1192 if (empty($server['network'])) {
1193 $server['network'] = Protocol::PHANTOM;
1202 * @see https://git.feneas.org/jaywink/nodeinfo2
1204 * @param string $nodeinfo_url address of the nodeinfo path
1206 * @return array Server data
1208 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1210 private static function parseNodeinfo2(string $nodeinfo_url): array
1212 $curlResult = DI::httpClient()->get($nodeinfo_url, HttpClientAccept::JSON);
1213 if (!$curlResult->isSuccess()) {
1217 $nodeinfo = json_decode($curlResult->getBody(), true);
1218 if (!is_array($nodeinfo)) {
1223 'detection-method' => self::DETECT_NODEINFO_2,
1224 'register_policy' => Register::CLOSED,
1225 'platform' => 'unknown',
1228 if (!empty($nodeinfo['openRegistrations'])) {
1229 $server['register_policy'] = Register::OPEN;
1232 if (!empty($nodeinfo['software'])) {
1233 if (isset($nodeinfo['software']['name'])) {
1234 $server['platform'] = strtolower($nodeinfo['software']['name']);
1237 if (!empty($nodeinfo['software']['version']) && isset($server['platform'])) {
1238 $server['version'] = $nodeinfo['software']['version'];
1239 // Version numbers on Nodeinfo are presented with additional info, e.g.:
1240 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
1241 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
1243 // qoto advertises itself as Mastodon
1244 if (($server['platform'] == 'mastodon') && substr($nodeinfo['software']['version'], -5) == '-qoto') {
1245 $server['platform'] = 'qoto';
1250 if (!empty($nodeinfo['metadata']['nodeName'])) {
1251 $server['site_name'] = $nodeinfo['metadata']['nodeName'];
1254 if (!empty($nodeinfo['usage']['users']['total'])) {
1255 $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
1258 if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
1259 $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
1262 if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
1263 $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
1266 if (!empty($nodeinfo['usage']['localPosts'])) {
1267 $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
1270 if (!empty($nodeinfo['usage']['localComments'])) {
1271 $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
1274 if (!empty($nodeinfo['protocols'])) {
1276 if (is_string($nodeinfo['protocols'])) {
1277 $protocols[$nodeinfo['protocols']] = true;
1279 foreach ($nodeinfo['protocols'] as $protocol) {
1280 if (is_string($protocol)) {
1281 $protocols[$protocol] = true;
1286 if (!empty($protocols['dfrn'])) {
1287 $server['network'] = Protocol::DFRN;
1288 } elseif (!empty($protocols['activitypub'])) {
1289 $server['network'] = Protocol::ACTIVITYPUB;
1290 } elseif (!empty($protocols['diaspora'])) {
1291 $server['network'] = Protocol::DIASPORA;
1292 } elseif (!empty($protocols['ostatus'])) {
1293 $server['network'] = Protocol::OSTATUS;
1294 } elseif (!empty($protocols['gnusocial'])) {
1295 $server['network'] = Protocol::OSTATUS;
1296 } elseif (!empty($protocols['zot'])) {
1297 $server['network'] = Protocol::ZOT;
1301 if (empty($server)) {
1305 if (empty($server['network'])) {
1306 $server['network'] = Protocol::PHANTOM;
1313 * Parses NodeInfo2 protocol 1.0
1315 * @see https://github.com/jaywink/nodeinfo2/blob/master/PROTOCOL.md
1317 * @param string $nodeinfo_url address of the nodeinfo path
1319 * @return array Server data
1321 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1323 private static function parseNodeinfo210(ICanHandleHttpResponses $httpResult): array
1325 if (!$httpResult->isSuccess()) {
1329 $nodeinfo = json_decode($httpResult->getBody(), true);
1331 if (!is_array($nodeinfo)) {
1335 $server = ['detection-method' => self::DETECT_NODEINFO_210,
1336 'register_policy' => Register::CLOSED];
1338 if (!empty($nodeinfo['openRegistrations'])) {
1339 $server['register_policy'] = Register::OPEN;
1342 if (!empty($nodeinfo['server'])) {
1343 if (!empty($nodeinfo['server']['software'])) {
1344 $server['platform'] = strtolower($nodeinfo['server']['software']);
1347 if (!empty($nodeinfo['server']['version'])) {
1348 $server['version'] = $nodeinfo['server']['version'];
1349 // Version numbers on Nodeinfo are presented with additional info, e.g.:
1350 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
1351 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
1354 if (!empty($nodeinfo['server']['name'])) {
1355 $server['site_name'] = $nodeinfo['server']['name'];
1359 if (!empty($nodeinfo['usage']['users']['total'])) {
1360 $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
1363 if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
1364 $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
1367 if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
1368 $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
1371 if (!empty($nodeinfo['usage']['localPosts'])) {
1372 $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
1375 if (!empty($nodeinfo['usage']['localComments'])) {
1376 $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
1379 if (!empty($nodeinfo['protocols'])) {
1381 if (is_string($nodeinfo['protocols'])) {
1382 $protocols[$nodeinfo['protocols']] = true;
1384 foreach ($nodeinfo['protocols'] as $protocol) {
1385 if (is_string($protocol)) {
1386 $protocols[$protocol] = true;
1391 if (!empty($protocols['dfrn'])) {
1392 $server['network'] = Protocol::DFRN;
1393 } elseif (!empty($protocols['activitypub'])) {
1394 $server['network'] = Protocol::ACTIVITYPUB;
1395 } elseif (!empty($protocols['diaspora'])) {
1396 $server['network'] = Protocol::DIASPORA;
1397 } elseif (!empty($protocols['ostatus'])) {
1398 $server['network'] = Protocol::OSTATUS;
1399 } elseif (!empty($protocols['gnusocial'])) {
1400 $server['network'] = Protocol::OSTATUS;
1401 } elseif (!empty($protocols['zot'])) {
1402 $server['network'] = Protocol::ZOT;
1406 if (empty($server) || empty($server['platform'])) {
1410 if (empty($server['network'])) {
1411 $server['network'] = Protocol::PHANTOM;
1418 * Fetch server information from a 'siteinfo.json' file on the given server
1420 * @param string $url URL of the given server
1421 * @param array $serverdata array with server data
1423 * @return array server data
1425 private static function fetchSiteinfo(string $url, array $serverdata): array
1427 $curlResult = DI::httpClient()->get($url . '/siteinfo.json', HttpClientAccept::JSON);
1428 if (!$curlResult->isSuccess()) {
1432 $data = json_decode($curlResult->getBody(), true);
1437 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1438 $serverdata['detection-method'] = self::DETECT_SITEINFO_JSON;
1441 if (!empty($data['platform'])) {
1442 $serverdata['platform'] = strtolower($data['platform']);
1443 $serverdata['version'] = $data['version'] ?? 'N/A';
1446 if (!empty($data['plugins'])) {
1447 if (in_array('pubcrawl', $data['plugins'])) {
1448 $serverdata['network'] = Protocol::ACTIVITYPUB;
1449 } elseif (in_array('diaspora', $data['plugins'])) {
1450 $serverdata['network'] = Protocol::DIASPORA;
1451 } elseif (in_array('gnusoc', $data['plugins'])) {
1452 $serverdata['network'] = Protocol::OSTATUS;
1454 $serverdata['network'] = Protocol::ZOT;
1458 if (!empty($data['site_name'])) {
1459 $serverdata['site_name'] = $data['site_name'];
1462 if (!empty($data['channels_total'])) {
1463 $serverdata['registered-users'] = max($data['channels_total'], 1);
1466 if (!empty($data['channels_active_monthly'])) {
1467 $serverdata['active-month-users'] = max($data['channels_active_monthly'], 0);
1470 if (!empty($data['channels_active_halfyear'])) {
1471 $serverdata['active-halfyear-users'] = max($data['channels_active_halfyear'], 0);
1474 if (!empty($data['local_posts'])) {
1475 $serverdata['local-posts'] = max($data['local_posts'], 0);
1478 if (!empty($data['local_comments'])) {
1479 $serverdata['local-comments'] = max($data['local_comments'], 0);
1482 if (!empty($data['register_policy'])) {
1483 switch ($data['register_policy']) {
1484 case 'REGISTER_OPEN':
1485 $serverdata['register_policy'] = Register::OPEN;
1488 case 'REGISTER_APPROVE':
1489 $serverdata['register_policy'] = Register::APPROVE;
1492 case 'REGISTER_CLOSED':
1494 $serverdata['register_policy'] = Register::CLOSED;
1503 * Fetches server data via an ActivityPub account with url of that server
1505 * @param string $url URL of the given server
1506 * @param array $serverdata array with server data
1508 * @return array server data
1512 private static function fetchDataFromSystemActor(array $data, array $serverdata): array
1515 return ['server' => $serverdata, 'actor' => ''];
1518 $actor = JsonLD::compact($data, false);
1519 if (in_array(JsonLD::fetchElement($actor, '@type'), ActivityPub\Receiver::ACCOUNT_TYPES)) {
1520 $serverdata['network'] = Protocol::ACTIVITYPUB;
1521 $serverdata['site_name'] = JsonLD::fetchElement($actor, 'as:name', '@value');
1522 $serverdata['info'] = JsonLD::fetchElement($actor, 'as:summary', '@value');
1523 if (self::isNomad($actor)) {
1524 $serverdata['platform'] = self::getNomadName($actor['@id']);
1525 $serverdata['version'] = self::getNomadVersion($actor['@id']);
1526 $serverdata['detection-method'] = self::DETECT_SYSTEM_ACTOR;
1527 } elseif (!empty($actor['as:generator'])) {
1528 $generator = explode(' ', JsonLD::fetchElement($actor['as:generator'], 'as:name', '@value'));
1529 $serverdata['platform'] = strtolower(array_shift($generator));
1530 $serverdata['version'] = self::getNomadVersion($actor['@id']);
1531 $serverdata['detection-method'] = self::DETECT_SYSTEM_ACTOR;
1533 $serverdata['detection-method'] = self::DETECT_AP_ACTOR;
1535 return ['server' => $serverdata, 'actor' => $actor['@id']];
1536 } elseif ((JsonLD::fetchElement($actor, '@type') == 'as:Collection')) {
1537 // By now only Ktistec seems to provide collections this way
1538 $serverdata['platform'] = 'ktistec';
1539 $serverdata['network'] = Protocol::ACTIVITYPUB;
1540 $serverdata['detection-method'] = self::DETECT_AP_COLLECTION;
1542 $actors = JsonLD::fetchElementArray($actor, 'as:items');
1543 if (!empty($actors) && !empty($actors[0]['@id'])) {
1544 $actor_url = $actor['@id'] . $actors[0]['@id'];
1549 return ['server' => $serverdata, 'actor' => $actor_url];
1551 return ['server' => $serverdata, 'actor' => ''];
1555 * Detect if the given actor is a nomad account
1557 * @param array $actor
1560 private static function isNomad(array $actor): bool
1562 $tags = JsonLD::fetchElementArray($actor, 'as:tag');
1567 foreach ($tags as $tag) {
1568 if ((($tag['as:name'] ?? '') == 'Protocol') && (($tag['sc:value'] ?? '') == 'nomad')) {
1576 * Fetch the name of Nomad implementation
1578 * @param string $url
1581 private static function getNomadName(string $url): string
1584 $curlResult = DI::httpClient()->get($url . '/manifest', 'application/manifest+json');
1585 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1589 $data = json_decode($curlResult->getBody(), true);
1594 return $data['name'] ?? $name;
1598 * Fetch the version of the Nomad installation
1600 * @param string $url
1603 private static function getNomadVersion(string $url): string
1605 $curlResult = DI::httpClient()->get($url . '/api/z/1.0/version', HttpClientAccept::JSON);
1606 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1610 $data = json_decode($curlResult->getBody(), true);
1618 * Checks if the server contains a valid host meta file
1620 * @param string $url URL of the given server
1622 * @return boolean 'true' if the server seems to be vital
1624 private static function validHostMeta(string $url): bool
1626 $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
1627 $curlResult = DI::httpClient()->get($url . Probe::HOST_META, HttpClientAccept::XRD_XML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
1628 if (!$curlResult->isSuccess()) {
1632 $xrd = XML::parseString($curlResult->getBody(), true);
1633 if (!is_object($xrd)) {
1637 $elements = XML::elementToArray($xrd);
1638 if (empty($elements) || empty($elements['xrd']) || empty($elements['xrd']['link'])) {
1643 foreach ($elements['xrd']['link'] as $link) {
1644 // When there is more than a single "link" element, the array looks slightly different
1645 if (!empty($link['@attributes'])) {
1646 $link = $link['@attributes'];
1649 if (empty($link['rel']) || empty($link['template'])) {
1653 if ($link['rel'] == 'lrdd') {
1654 // When the webfinger host is the same like the system host, it should be ok.
1655 $valid = (parse_url($url, PHP_URL_HOST) == parse_url($link['template'], PHP_URL_HOST));
1663 * Detect the network of the given server via their known contacts
1665 * @param string $url URL of the given server
1666 * @param array $serverdata array with server data
1668 * @return array server data
1670 private static function detectNetworkViaContacts(string $url, array $serverdata): array
1674 $nurl = Strings::normaliseLink($url);
1676 $apcontacts = DBA::select('apcontact', ['url'], ['baseurl' => [$url, $nurl]]);
1677 while ($apcontact = DBA::fetch($apcontacts)) {
1678 $contacts[Strings::normaliseLink($apcontact['url'])] = $apcontact['url'];
1680 DBA::close($apcontacts);
1682 $pcontacts = DBA::select('contact', ['url', 'nurl'], ['uid' => 0, 'baseurl' => [$url, $nurl]]);
1683 while ($pcontact = DBA::fetch($pcontacts)) {
1684 $contacts[$pcontact['nurl']] = $pcontact['url'];
1686 DBA::close($pcontacts);
1688 if (empty($contacts)) {
1693 foreach ($contacts as $contact) {
1694 // Endlosschleife verhindern wegen gsid!
1695 $data = Probe::uri($contact);
1696 if (in_array($data['network'], Protocol::FEDERATED)) {
1697 $serverdata['network'] = $data['network'];
1699 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1700 $serverdata['detection-method'] = self::DETECT_CONTACTS;
1703 } elseif ((time() - $time) > 10) {
1704 // To reduce the stress on remote systems we probe a maximum of 10 seconds
1713 * Checks if the given server does have a '/poco' endpoint.
1714 * This is used for the 'PortableContact' functionality,
1715 * which is used by both Friendica and Hubzilla.
1717 * @param string $url URL of the given server
1718 * @param array $serverdata array with server data
1720 * @return array server data
1722 private static function checkPoCo(string $url, array $serverdata): array
1724 $serverdata['poco'] = '';
1726 $curlResult = DI::httpClient()->get($url . '/poco', HttpClientAccept::JSON);
1727 if (!$curlResult->isSuccess()) {
1731 $data = json_decode($curlResult->getBody(), true);
1736 if (!empty($data['totalResults'])) {
1737 $registeredUsers = $serverdata['registered-users'] ?? 0;
1738 $serverdata['registered-users'] = max($data['totalResults'], $registeredUsers, 1);
1739 $serverdata['directory-type'] = self::DT_POCO;
1740 $serverdata['poco'] = $url . '/poco';
1747 * Checks if the given server does have a Mastodon style directory endpoint.
1749 * @param string $url URL of the given server
1750 * @param array $serverdata array with server data
1752 * @return array server data
1754 public static function checkMastodonDirectory(string $url, array $serverdata): array
1756 $curlResult = DI::httpClient()->get($url . '/api/v1/directory?limit=1', HttpClientAccept::JSON);
1757 if (!$curlResult->isSuccess()) {
1761 $data = json_decode($curlResult->getBody(), true);
1766 if (count($data) == 1) {
1767 $serverdata['directory-type'] = self::DT_MASTODON;
1774 * Detects Peertube via their known endpoint
1776 * @param string $url URL of the given server
1777 * @param array $serverdata array with server data
1779 * @return array server data
1781 private static function detectPeertube(string $url, array $serverdata): array
1783 $curlResult = DI::httpClient()->get($url . '/api/v1/config', HttpClientAccept::JSON);
1784 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1788 $data = json_decode($curlResult->getBody(), true);
1793 if (!empty($data['instance']) && !empty($data['serverVersion'])) {
1794 $serverdata['platform'] = 'peertube';
1795 $serverdata['version'] = $data['serverVersion'];
1796 $serverdata['network'] = Protocol::ACTIVITYPUB;
1798 if (!empty($data['instance']['name'])) {
1799 $serverdata['site_name'] = $data['instance']['name'];
1802 if (!empty($data['instance']['shortDescription'])) {
1803 $serverdata['info'] = $data['instance']['shortDescription'];
1806 if (!empty($data['signup'])) {
1807 if (!empty($data['signup']['allowed'])) {
1808 $serverdata['register_policy'] = Register::OPEN;
1812 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1813 $serverdata['detection-method'] = self::DETECT_V1_CONFIG;
1821 * Detects the version number of a given server when it was a NextCloud installation
1823 * @param string $url URL of the given server
1824 * @param array $serverdata array with server data
1825 * @param bool $validHostMeta
1827 * @return array server data
1829 private static function detectNextcloud(string $url, array $serverdata, bool $validHostMeta): array
1831 $curlResult = DI::httpClient()->get($url . '/status.php', HttpClientAccept::JSON);
1832 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1836 $data = json_decode($curlResult->getBody(), true);
1841 if (!empty($data['version'])) {
1842 $serverdata['platform'] = 'nextcloud';
1843 $serverdata['version'] = $data['version'];
1845 if ($validHostMeta) {
1846 $serverdata['network'] = Protocol::ACTIVITYPUB;
1849 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1850 $serverdata['detection-method'] = self::DETECT_STATUS_PHP;
1858 * Fetches weekly usage data
1860 * @param string $url URL of the given server
1861 * @param array $serverdata array with server data
1863 * @return array server data
1865 private static function fetchWeeklyUsage(string $url, array $serverdata): array
1867 $curlResult = DI::httpClient()->get($url . '/api/v1/instance/activity', HttpClientAccept::JSON);
1868 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1872 $data = json_decode($curlResult->getBody(), true);
1878 foreach ($data as $week) {
1879 // Use only data from a full week
1880 if (empty($week['week']) || (time() - $week['week']) < 7 * 24 * 60 * 60) {
1884 // Most likely the data is sorted correctly. But we better are safe than sorry
1885 if (empty($current_week['week']) || ($current_week['week'] < $week['week'])) {
1886 $current_week = $week;
1890 if (!empty($current_week['logins'])) {
1891 $serverdata['active-week-users'] = max($current_week['logins'], 0);
1898 * Detects data from a given server url if it was a mastodon alike system
1900 * @param string $url URL of the given server
1901 * @param array $serverdata array with server data
1903 * @return array server data
1905 private static function detectMastodonAlikes(string $url, array $serverdata): array
1907 $curlResult = DI::httpClient()->get($url . '/api/v1/instance', HttpClientAccept::JSON);
1908 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1912 $data = json_decode($curlResult->getBody(), true);
1919 if (!empty($data['version'])) {
1920 $serverdata['platform'] = 'mastodon';
1921 $serverdata['version'] = $data['version'] ?? '';
1922 $serverdata['network'] = Protocol::ACTIVITYPUB;
1926 if (!empty($data['title'])) {
1927 $serverdata['site_name'] = $data['title'];
1930 if (!empty($data['title']) && empty($serverdata['platform']) && ($serverdata['network'] == Protocol::PHANTOM)) {
1931 $serverdata['platform'] = 'mastodon';
1932 $serverdata['network'] = Protocol::ACTIVITYPUB;
1936 if (!empty($data['description'])) {
1937 $serverdata['info'] = trim($data['description']);
1940 if (!empty($data['stats']['user_count'])) {
1941 $serverdata['registered-users'] = max($data['stats']['user_count'], 1);
1944 if (!empty($serverdata['version']) && preg_match('/.*?\(compatible;\s(.*)\s(.*)\)/ism', $serverdata['version'], $matches)) {
1945 $serverdata['platform'] = strtolower($matches[1]);
1946 $serverdata['version'] = $matches[2];
1950 if (!empty($serverdata['version']) && strstr(strtolower($serverdata['version']), 'pleroma')) {
1951 $serverdata['platform'] = 'pleroma';
1952 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['version']));
1956 if (!empty($serverdata['platform']) && strstr($serverdata['platform'], 'pleroma')) {
1957 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['platform']));
1958 $serverdata['platform'] = 'pleroma';
1962 if ($valid && in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1963 $serverdata['detection-method'] = self::DETECT_MASTODON_API;
1970 * Detects data from typical Hubzilla endpoints
1972 * @param string $url URL of the given server
1973 * @param array $serverdata array with server data
1975 * @return array server data
1977 private static function detectHubzilla(string $url, array $serverdata): array
1979 $curlResult = DI::httpClient()->get($url . '/api/statusnet/config.json', HttpClientAccept::JSON);
1980 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1984 $data = json_decode($curlResult->getBody(), true);
1985 if (empty($data) || empty($data['site'])) {
1989 if (!empty($data['site']['name'])) {
1990 $serverdata['site_name'] = $data['site']['name'];
1993 if (!empty($data['site']['platform'])) {
1994 $serverdata['platform'] = strtolower($data['site']['platform']['PLATFORM_NAME']);
1995 $serverdata['version'] = $data['site']['platform']['STD_VERSION'];
1996 $serverdata['network'] = Protocol::ZOT;
1999 if (!empty($data['site']['hubzilla'])) {
2000 $serverdata['platform'] = strtolower($data['site']['hubzilla']['PLATFORM_NAME']);
2001 $serverdata['version'] = $data['site']['hubzilla']['RED_VERSION'];
2002 $serverdata['network'] = Protocol::ZOT;
2005 if (!empty($data['site']['redmatrix'])) {
2006 if (!empty($data['site']['redmatrix']['PLATFORM_NAME'])) {
2007 $serverdata['platform'] = strtolower($data['site']['redmatrix']['PLATFORM_NAME']);
2008 } elseif (!empty($data['site']['redmatrix']['RED_PLATFORM'])) {
2009 $serverdata['platform'] = strtolower($data['site']['redmatrix']['RED_PLATFORM']);
2012 $serverdata['version'] = $data['site']['redmatrix']['RED_VERSION'];
2013 $serverdata['network'] = Protocol::ZOT;
2017 $inviteonly = false;
2020 if (!empty($data['site']['closed'])) {
2021 $closed = self::toBoolean($data['site']['closed']);
2024 if (!empty($data['site']['private'])) {
2025 $private = self::toBoolean($data['site']['private']);
2028 if (!empty($data['site']['inviteonly'])) {
2029 $inviteonly = self::toBoolean($data['site']['inviteonly']);
2032 if (!$closed && !$private and $inviteonly) {
2033 $serverdata['register_policy'] = Register::APPROVE;
2034 } elseif (!$closed && !$private) {
2035 $serverdata['register_policy'] = Register::OPEN;
2037 $serverdata['register_policy'] = Register::CLOSED;
2040 if (($serverdata['network'] != Protocol::PHANTOM) && in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
2041 $serverdata['detection-method'] = self::DETECT_CONFIG_JSON;
2048 * Converts input value to a boolean value
2050 * @param string|integer $val
2054 private static function toBoolean($val): bool
2056 if (($val == 'true') || ($val == 1)) {
2058 } elseif (($val == 'false') || ($val == 0)) {
2066 * Detect if the URL belongs to a GNU Social server
2068 * @param string $url URL of the given server
2069 * @param array $serverdata array with server data
2071 * @return array server data
2073 private static function detectGNUSocial(string $url, array $serverdata): array
2075 // Test for GNU Social
2076 $curlResult = DI::httpClient()->get($url . '/api/gnusocial/version.json', HttpClientAccept::JSON);
2077 if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
2078 ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
2079 $serverdata['platform'] = 'gnusocial';
2080 // Remove junk that some GNU Social servers return
2081 $serverdata['version'] = str_replace(chr(239) . chr(187) . chr(191), '', $curlResult->getBody());
2082 $serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
2083 $serverdata['version'] = trim($serverdata['version'], '"');
2084 $serverdata['network'] = Protocol::OSTATUS;
2086 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
2087 $serverdata['detection-method'] = self::DETECT_GNUSOCIAL;
2093 // Test for Statusnet
2094 $curlResult = DI::httpClient()->get($url . '/api/statusnet/version.json', HttpClientAccept::JSON);
2095 if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
2096 ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
2098 // Remove junk that some GNU Social servers return
2099 $serverdata['version'] = str_replace(chr(239).chr(187).chr(191), '', $curlResult->getBody());
2100 $serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
2101 $serverdata['version'] = trim($serverdata['version'], '"');
2103 if (!empty($serverdata['version']) && strtolower(substr($serverdata['version'], 0, 7)) == 'pleroma') {
2104 $serverdata['platform'] = 'pleroma';
2105 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['version']));
2106 $serverdata['network'] = Protocol::ACTIVITYPUB;
2108 $serverdata['platform'] = 'statusnet';
2109 $serverdata['network'] = Protocol::OSTATUS;
2112 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
2113 $serverdata['detection-method'] = self::DETECT_STATUSNET;
2121 * Detect if the URL belongs to a Friendica server
2123 * @param string $url URL of the given server
2124 * @param array $serverdata array with server data
2126 * @return array server data
2128 private static function detectFriendica(string $url, array $serverdata): array
2130 // There is a bug in some versions of Friendica that will return an ActivityStream actor when the content type "application/json" is requested.
2131 // Because of this me must not use ACCEPT_JSON here.
2132 $curlResult = DI::httpClient()->get($url . '/friendica/json');
2133 if (!$curlResult->isSuccess()) {
2134 $curlResult = DI::httpClient()->get($url . '/friendika/json');
2136 $platform = 'Friendika';
2139 $platform = 'Friendica';
2142 if (!$curlResult->isSuccess()) {
2146 $data = json_decode($curlResult->getBody(), true);
2147 if (empty($data) || empty($data['version'])) {
2151 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
2152 $serverdata['detection-method'] = $friendika ? self::DETECT_FRIENDIKA : self::DETECT_FRIENDICA;
2155 $serverdata['network'] = Protocol::DFRN;
2156 $serverdata['version'] = $data['version'];
2158 if (!empty($data['no_scrape_url'])) {
2159 $serverdata['noscrape'] = $data['no_scrape_url'];
2162 if (!empty($data['site_name'])) {
2163 $serverdata['site_name'] = $data['site_name'];
2166 if (!empty($data['info'])) {
2167 $serverdata['info'] = trim($data['info']);
2170 $register_policy = ($data['register_policy'] ?? '') ?: 'REGISTER_CLOSED';
2171 switch ($register_policy) {
2172 case 'REGISTER_OPEN':
2173 $serverdata['register_policy'] = Register::OPEN;
2176 case 'REGISTER_APPROVE':
2177 $serverdata['register_policy'] = Register::APPROVE;
2180 case 'REGISTER_CLOSED':
2181 case 'REGISTER_INVITATION':
2182 $serverdata['register_policy'] = Register::CLOSED;
2185 Logger::info('Register policy is invalid', ['policy' => $register_policy, 'server' => $url]);
2186 $serverdata['register_policy'] = Register::CLOSED;
2190 $serverdata['platform'] = strtolower($data['platform'] ?? $platform);
2196 * Analyses the landing page of a given server for hints about type and system of that server
2198 * @param object $curlResult result of curl execution
2199 * @param array $serverdata array with server data
2201 * @return array server data
2203 private static function analyseRootBody($curlResult, array $serverdata): array
2205 if (empty($curlResult->getBody())) {
2209 if (file_exists(__DIR__ . '/../../static/platforms.config.php')) {
2210 require __DIR__ . '/../../static/platforms.config.php';
2212 throw new HTTPException\InternalServerErrorException('Invalid platform file');
2215 $platforms = array_merge($ap_platforms, $dfrn_platforms, $zap_platforms, $platforms);
2217 $doc = new DOMDocument();
2218 @$doc->loadHTML($curlResult->getBody());
2219 $xpath = new DOMXPath($doc);
2222 // We can only detect honk via some HTML element on their page
2223 if ($xpath->query('//div[@id="honksonpage"]')->count() == 1) {
2224 $serverdata['platform'] = 'honk';
2225 $serverdata['network'] = Protocol::ACTIVITYPUB;
2229 $title = trim(XML::getFirstNodeValue($xpath, '//head/title/text()'));
2230 if (!empty($title)) {
2231 $serverdata['site_name'] = $title;
2234 $list = $xpath->query('//meta[@name]');
2236 foreach ($list as $node) {
2238 if ($node->attributes->length) {
2239 foreach ($node->attributes as $attribute) {
2240 $value = trim($attribute->value);
2241 if (empty($value)) {
2245 $attr[$attribute->name] = $value;
2248 if (empty($attr['name']) || empty($attr['content'])) {
2253 if ($attr['name'] == 'description') {
2254 $serverdata['info'] = $attr['content'];
2257 if (in_array($attr['name'], ['application-name', 'al:android:app_name', 'al:ios:app_name',
2258 'twitter:app:name:googleplay', 'twitter:app:name:iphone', 'twitter:app:name:ipad', 'generator'])) {
2259 $platform = str_ireplace(array_keys($platforms), array_values($platforms), $attr['content']);
2260 $platform = str_replace('/', ' ', $platform);
2261 $platform_parts = explode(' ', $platform);
2262 if ((count($platform_parts) >= 2) && in_array(strtolower($platform_parts[0]), array_values($platforms))) {
2263 $platform = $platform_parts[0];
2264 $serverdata['version'] = $platform_parts[1];
2266 if (in_array($platform, array_values($dfrn_platforms))) {
2267 $serverdata['network'] = Protocol::DFRN;
2268 } elseif (in_array($platform, array_values($ap_platforms))) {
2269 $serverdata['network'] = Protocol::ACTIVITYPUB;
2270 } elseif (in_array($platform, array_values($zap_platforms))) {
2271 $serverdata['network'] = Protocol::ZOT;
2273 if (in_array($platform, array_values($platforms))) {
2274 $serverdata['platform'] = $platform;
2280 $list = $xpath->query('//meta[@property]');
2282 foreach ($list as $node) {
2284 if ($node->attributes->length) {
2285 foreach ($node->attributes as $attribute) {
2286 $value = trim($attribute->value);
2287 if (empty($value)) {
2291 $attr[$attribute->name] = $value;
2294 if (empty($attr['property']) || empty($attr['content'])) {
2299 if ($attr['property'] == 'og:site_name') {
2300 $serverdata['site_name'] = $attr['content'];
2303 if ($attr['property'] == 'og:description') {
2304 $serverdata['info'] = $attr['content'];
2307 if (in_array($attr['property'], ['og:platform', 'generator'])) {
2308 if (in_array($attr['content'], array_keys($platforms))) {
2309 $serverdata['platform'] = $platforms[$attr['content']];
2313 if (in_array($attr['content'], array_keys($ap_platforms))) {
2314 $serverdata['network'] = Protocol::ACTIVITYPUB;
2315 } elseif (in_array($attr['content'], array_values($zap_platforms))) {
2316 $serverdata['network'] = Protocol::ZOT;
2321 $list = $xpath->query('//link[@rel="me"]');
2322 foreach ($list as $node) {
2323 foreach ($node->attributes as $attribute) {
2324 if (parse_url(trim($attribute->value), PHP_URL_HOST) == 'micro.blog') {
2325 $serverdata['version'] = trim($serverdata['platform'] . ' ' . $serverdata['version']);
2326 $serverdata['platform'] = 'microblog';
2327 $serverdata['network'] = Protocol::ACTIVITYPUB;
2333 if ($serverdata['platform'] != 'microblog') {
2334 $list = $xpath->query('//link[@rel="micropub"]');
2335 foreach ($list as $node) {
2336 foreach ($node->attributes as $attribute) {
2337 if (trim($attribute->value) == 'https://micro.blog/micropub') {
2338 $serverdata['version'] = trim($serverdata['platform'] . ' ' . $serverdata['version']);
2339 $serverdata['platform'] = 'microblog';
2340 $serverdata['network'] = Protocol::ACTIVITYPUB;
2347 if ($assigned && in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_HEADER])) {
2348 $serverdata['detection-method'] = self::DETECT_BODY;
2355 * Analyses the header data of a given server for hints about type and system of that server
2357 * @param object $curlResult result of curl execution
2358 * @param array $serverdata array with server data
2360 * @return array server data
2362 private static function analyseRootHeader($curlResult, array $serverdata): array
2364 if ($curlResult->getHeader('server') == 'Mastodon') {
2365 $serverdata['platform'] = 'mastodon';
2366 $serverdata['network'] = Protocol::ACTIVITYPUB;
2367 } elseif ($curlResult->inHeader('x-diaspora-version')) {
2368 $serverdata['platform'] = 'diaspora';
2369 $serverdata['network'] = Protocol::DIASPORA;
2370 $serverdata['version'] = $curlResult->getHeader('x-diaspora-version')[0] ?? '';
2371 } elseif ($curlResult->inHeader('x-friendica-version')) {
2372 $serverdata['platform'] = 'friendica';
2373 $serverdata['network'] = Protocol::DFRN;
2374 $serverdata['version'] = $curlResult->getHeader('x-friendica-version')[0] ?? '';
2379 if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
2380 $serverdata['detection-method'] = self::DETECT_HEADER;
2387 * Update GServer entries
2389 public static function discover()
2391 if (!DI::config('system', 'discover_servers')) {
2395 // Update the server list
2396 self::discoverFederation();
2400 $requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
2402 $last_update = date('c', time() - (60 * 60 * 24 * $requery_days));
2404 $gservers = DBA::select('gserver', ['id', 'url', 'nurl', 'network', 'poco', 'directory-type'],
2405 ["NOT `blocked` AND NOT `failed` AND `directory-type` != ? AND `last_poco_query` < ?", GServer::DT_NONE, $last_update],
2406 ['order' => ['RAND()']]);
2408 while ($gserver = DBA::fetch($gservers)) {
2409 Logger::info('Update peer list', ['server' => $gserver['url'], 'id' => $gserver['id']]);
2410 Worker::add(Worker::PRIORITY_LOW, 'UpdateServerPeers', $gserver['url']);
2412 Logger::info('Update directory', ['server' => $gserver['url'], 'id' => $gserver['id']]);
2413 Worker::add(Worker::PRIORITY_LOW, 'UpdateServerDirectory', $gserver);
2415 $fields = ['last_poco_query' => DateTimeFormat::utcNow()];
2416 self::update($fields, ['nurl' => $gserver['nurl']]);
2418 if (--$no_of_queries == 0) {
2423 DBA::close($gservers);
2427 * Discover federated servers
2429 private static function discoverFederation()
2431 $last = DI::keyValue()->get('poco_last_federation_discovery');
2434 $next = $last + (24 * 60 * 60);
2436 if ($next > time()) {
2441 // Discover federated servers
2442 $protocols = ['activitypub', 'diaspora', 'dfrn', 'ostatus'];
2443 foreach ($protocols as $protocol) {
2444 $query = '{nodes(protocol:"' . $protocol . '"){host}}';
2445 $curlResult = DI::httpClient()->fetch('https://the-federation.info/graphql?query=' . urlencode($query), HttpClientAccept::JSON);
2446 if (!empty($curlResult)) {
2447 $data = json_decode($curlResult, true);
2448 if (!empty($data['data']['nodes'])) {
2449 foreach ($data['data']['nodes'] as $server) {
2450 // Using "only_nodeinfo" since servers that are listed on that page should always have it.
2451 self::add('https://' . $server['host'], true);
2457 // Discover Mastodon servers
2458 $accesstoken = DI::config()->get('system', 'instances_social_key');
2460 if (!empty($accesstoken)) {
2461 $api = 'https://instances.social/api/1.0/instances/list?count=0';
2462 $curlResult = DI::httpClient()->get($api, HttpClientAccept::JSON, [HttpClientOptions::HEADERS => ['Authorization' => ['Bearer ' . $accesstoken]]]);
2463 if ($curlResult->isSuccess()) {
2464 $servers = json_decode($curlResult->getBody(), true);
2466 if (!empty($servers['instances'])) {
2467 foreach ($servers['instances'] as $server) {
2468 $url = (is_null($server['https_score']) ? 'http' : 'https') . '://' . $server['name'];
2475 DI::keyValue()->set('poco_last_federation_discovery', time());
2479 * Set the protocol for the given server
2481 * @param int $gsid Server id
2482 * @param int $protocol Protocol id
2486 public static function setProtocol(int $gsid, int $protocol)
2492 $gserver = DBA::selectFirst('gserver', ['protocol', 'url'], ['id' => $gsid]);
2493 if (!DBA::isResult($gserver)) {
2497 $old = $gserver['protocol'];
2499 if (!is_null($old)) {
2501 The priority for the protocols is:
2503 2. DFRN via Diaspora
2509 // We don't need to change it when nothing is to be changed
2510 if ($old == $protocol) {
2514 // We don't want to mark a server as OStatus when it had been marked with any other protocol before
2515 if ($protocol == Post\DeliveryData::OSTATUS) {
2519 // If the server is marked as ActivityPub then we won't change it to anything different
2520 if ($old == Post\DeliveryData::ACTIVITYPUB) {
2524 // Don't change it to anything lower than DFRN if the new one wasn't ActivityPub
2525 if (($old == Post\DeliveryData::DFRN) && ($protocol != Post\DeliveryData::ACTIVITYPUB)) {
2529 // Don't change it to Diaspora when it is a legacy DFRN server
2530 if (($old == Post\DeliveryData::LEGACY_DFRN) && ($protocol == Post\DeliveryData::DIASPORA)) {
2535 Logger::info('Protocol for server', ['protocol' => $protocol, 'old' => $old, 'id' => $gsid, 'url' => $gserver['url']]);
2536 self::update(['protocol' => $protocol], ['id' => $gsid]);
2540 * Fetch the protocol of the given server
2542 * @param int $gsid Server id
2544 * @return ?int One of Post\DeliveryData protocol constants or null if unknown or gserver is missing
2548 public static function getProtocol(int $gsid): ?int
2554 $gserver = DBA::selectFirst('gserver', ['protocol'], ['id' => $gsid]);
2555 if (DBA::isResult($gserver)) {
2556 return $gserver['protocol'];
2563 * Update rows in the gserver table.
2564 * Enforces gserver table field maximum sizes to avoid "Data too long" database errors
2566 * @param array $fields
2567 * @param array $condition
2573 public static function update(array $fields, array $condition): bool
2575 $fields = DI::dbaDefinition()->truncateFieldsForTable('gserver', $fields);
2577 return DBA::update('gserver', $fields, $condition);
2581 * Insert a row into the gserver table.
2582 * Enforces gserver table field maximum sizes to avoid "Data too long" database errors
2584 * @param array $fields
2585 * @param int $duplicate_mode What to do on a duplicated entry
2591 public static function insert(array $fields, int $duplicate_mode = Database::INSERT_DEFAULT): bool
2593 $fields = DI::dbaDefinition()->truncateFieldsForTable('gserver', $fields);
2595 return DBA::insert('gserver', $fields, $duplicate_mode);