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\System;
30 use Friendica\Core\Worker;
31 use Friendica\Database\Database;
32 use Friendica\Database\DBA;
34 use Friendica\Module\Register;
35 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
36 use Friendica\Network\HTTPClient\Client\HttpClientOptions;
37 use Friendica\Network\HTTPClient\Capability\ICanHandleHttpResponses;
38 use Friendica\Network\Probe;
39 use Friendica\Protocol\ActivityPub;
40 use Friendica\Protocol\Relay;
41 use Friendica\Util\DateTimeFormat;
42 use Friendica\Util\JsonLD;
43 use Friendica\Util\Network;
44 use Friendica\Util\Strings;
45 use Friendica\Util\XML;
46 use Friendica\Network\HTTPException;
47 use Friendica\Worker\UpdateGServer;
48 use GuzzleHttp\Psr7\Uri;
49 use Psr\Http\Message\UriInterface;
52 * This class handles GServer related functions
59 const DT_MASTODON = 2;
61 // Methods to detect server types
63 // Non endpoint specific methods
64 const DETECT_MANUAL = 0;
65 const DETECT_HEADER = 1;
66 const DETECT_BODY = 2;
67 const DETECT_HOST_META = 3;
68 const DETECT_CONTACTS = 4;
69 const DETECT_AP_ACTOR = 5;
70 const DETECT_AP_COLLECTION = 6;
72 const DETECT_UNSPECIFIC = [self::DETECT_MANUAL, self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_HOST_META, self::DETECT_CONTACTS, self::DETECT_AP_ACTOR];
74 // Implementation specific endpoints
75 // @todo Possibly add Lemmy detection via the endpoint /api/v3/site
76 const DETECT_FRIENDIKA = 10;
77 const DETECT_FRIENDICA = 11;
78 const DETECT_STATUSNET = 12;
79 const DETECT_GNUSOCIAL = 13;
80 const DETECT_CONFIG_JSON = 14; // Statusnet, GNU Social, Older Hubzilla/Redmatrix
81 const DETECT_SITEINFO_JSON = 15; // Newer Hubzilla
82 const DETECT_MASTODON_API = 16;
83 const DETECT_STATUS_PHP = 17; // Nextcloud
84 const DETECT_V1_CONFIG = 18;
85 const DETECT_PUMPIO = 19; // Deprecated
86 const DETECT_SYSTEM_ACTOR = 20; // Mistpark, Osada, Roadhouse, Zap
88 // Standardized endpoints
89 const DETECT_STATISTICS_JSON = 100;
90 const DETECT_NODEINFO_1 = 101;
91 const DETECT_NODEINFO_2 = 102;
92 const DETECT_NODEINFO_210 = 103;
95 * Check for the existance of a server and adds it in the background if not existant
98 * @param boolean $only_nodeinfo
102 public static function add(string $url, bool $only_nodeinfo = false)
104 if (self::getID($url)) {
108 UpdateGServer::add(Worker::PRIORITY_LOW, $url, $only_nodeinfo);
112 * Get the ID for the given server URL
115 * @param boolean $no_check Don't check if the server hadn't been found
117 * @return int|null gserver id or NULL on empty URL or failed check
119 public static function getID(string $url, bool $no_check = false): ?int
121 $url = self::cleanURL($url);
127 $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => Strings::normaliseLink($url)]);
128 if (DBA::isResult($gserver)) {
129 Logger::debug('Got ID for URL', ['id' => $gserver['id'], 'url' => $url, 'callstack' => System::callstack(20)]);
131 if (Network::isUrlBlocked($url)) {
132 self::setBlockedById($gserver['id']);
134 self::setUnblockedById($gserver['id']);
137 return $gserver['id'];
140 if ($no_check || !self::check($url)) {
144 return self::getID($url, true);
148 * Retrieves all the servers which base domain are matching the provided domain pattern
150 * The pattern is a simple fnmatch() pattern with ? for single wildcard and * for multiple wildcard
152 * @param string $pattern
158 public static function listByDomainPattern(string $pattern): array
160 $likePattern = 'http://' . strtr($pattern, ['_' => '\_', '%' => '\%', '?' => '_', '*' => '%']);
162 // The SUBSTRING_INDEX returns everything before the eventual third /, which effectively trims an
163 // eventual server path and keep only the server domain which we're matching against the pattern.
164 $sql = "SELECT `gserver`.*, COUNT(*) AS `contacts`
166 LEFT JOIN `contact` ON `gserver`.`id` = `contact`.`gsid`
167 WHERE SUBSTRING_INDEX(`gserver`.`nurl`, '/', 3) LIKE ?
168 AND NOT `gserver`.`failed`
169 GROUP BY `gserver`.`id`";
171 $stmt = DI::dba()->p($sql, $likePattern);
173 return DI::dba()->toArray($stmt);
177 * Checks if the given server array is unreachable for a long time now
179 * @param integer $gsid
182 private static function isDefunct(array $gserver): bool
184 return ($gserver['failed'] || in_array($gserver['network'], Protocol::FEDERATED)) &&
185 ($gserver['last_contact'] >= $gserver['created']) &&
186 ($gserver['last_contact'] < $gserver['last_failure']) &&
187 ($gserver['last_contact'] < DateTimeFormat::utc('now - 90 days'));
191 * Checks if the given server id is unreachable for a long time now
193 * @param integer $gsid
196 public static function isDefunctById(int $gsid): bool
198 $gserver = DBA::selectFirst('gserver', ['url', 'next_contact', 'last_contact', 'last_failure', 'created', 'failed', 'network'], ['id' => $gsid]);
199 if (empty($gserver)) {
202 if (strtotime($gserver['next_contact']) < time()) {
203 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
206 return self::isDefunct($gserver);
211 * Checks if the given server id is reachable
213 * @param integer $gsid
216 public static function isReachableById(int $gsid): bool
218 $gserver = DBA::selectFirst('gserver', ['url', 'next_contact', 'failed', 'network'], ['id' => $gsid]);
219 if (empty($gserver)) {
222 if (strtotime($gserver['next_contact']) < time()) {
223 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
226 return !$gserver['failed'] && in_array($gserver['network'], Protocol::FEDERATED);
231 * Checks if the given server is reachable
233 * @param array $contact Contact that should be checked
235 * @return boolean 'true' if server seems vital
237 public static function reachable(array $contact): bool
239 if (!empty($contact['gsid'])) {
240 $gsid = $contact['gsid'];
241 } elseif (!empty($contact['baseurl'])) {
242 $server = $contact['baseurl'];
243 } elseif ($contact['network'] == Protocol::DIASPORA) {
244 $parts = parse_url($contact['url']);
245 unset($parts['path']);
246 $server = (string)Uri::fromParts($parts);
252 $condition = ['id' => $gsid];
254 $condition = ['nurl' => Strings::normaliseLink($server)];
257 $gserver = DBA::selectFirst('gserver', ['url', 'next_contact', 'failed', 'network'], $condition);
258 if (empty($gserver)) {
261 $reachable = !$gserver['failed'] && in_array($gserver['network'], Protocol::FEDERATED);
262 $server = $gserver['url'];
265 if (!empty($server) && (empty($gserver) || strtotime($gserver['next_contact']) < time())) {
266 UpdateGServer::add(Worker::PRIORITY_LOW, $server);
273 * Calculate the next update day
275 * @param bool $success
276 * @param string $created
277 * @param string $last_contact
278 * @param bool $undetected
284 public static function getNextUpdateDate(bool $success, string $created = '', string $last_contact = '', bool $undetected = false): string
286 // On successful contact process check again next week when it is a detected system.
287 // When we haven't detected the system, it could be a static website or a really old system.
289 return DateTimeFormat::utc($undetected ? 'now +1 month' : 'now +7 day');
292 $now = strtotime(DateTimeFormat::utcNow());
294 if ($created > $last_contact) {
295 $contact_time = strtotime($created);
297 $contact_time = strtotime($last_contact);
300 // If the last contact was less than 6 hours before then try again in 6 hours
301 if (($now - $contact_time) < (60 * 60 * 6)) {
302 return DateTimeFormat::utc('now +6 hour');
305 // If the last contact was less than 12 hours before then try again in 12 hours
306 if (($now - $contact_time) < (60 * 60 * 12)) {
307 return DateTimeFormat::utc('now +12 hour');
310 // If the last contact was less than 24 hours before then try tomorrow again
311 if (($now - $contact_time) < (60 * 60 * 24)) {
312 return DateTimeFormat::utc('now +1 day');
315 // If the last contact was less than a week before then try again in a week
316 if (($now - $contact_time) < (60 * 60 * 24 * 7)) {
317 return DateTimeFormat::utc('now +1 week');
320 // If the last contact was less than two weeks before then try again in two week
321 if (($now - $contact_time) < (60 * 60 * 24 * 14)) {
322 return DateTimeFormat::utc('now +2 week');
325 // If the last contact was less than a month before then try again in a month
326 if (($now - $contact_time) < (60 * 60 * 24 * 30)) {
327 return DateTimeFormat::utc('now +1 month');
330 // The system hadn't been successul contacted for more than a month, so try again in three months
331 return DateTimeFormat::utc('now +3 month');
335 * Checks the state of the given server.
337 * @param string $server_url URL of the given server
338 * @param string $network Network value that is used, when detection failed
339 * @param boolean $force Force an update.
340 * @param boolean $only_nodeinfo Only use nodeinfo for server detection
342 * @return boolean 'true' if server seems vital
344 public static function check(string $server_url, string $network = '', bool $force = false, bool $only_nodeinfo = false): bool
346 $server_url = self::cleanURL($server_url);
347 if ($server_url == '') {
351 if (Network::isUrlBlocked($server_url)) {
352 Logger::info('Server is blocked', ['url' => $server_url]);
353 self::setBlockedByUrl($server_url);
357 $gserver = DBA::selectFirst('gserver', [], ['nurl' => Strings::normaliseLink($server_url)]);
358 if (DBA::isResult($gserver)) {
359 if ($gserver['created'] <= DBA::NULL_DATETIME) {
360 $fields = ['created' => DateTimeFormat::utcNow()];
361 $condition = ['nurl' => Strings::normaliseLink($server_url)];
362 self::update($fields, $condition);
365 if (!$force && (strtotime($gserver['next_contact']) > time())) {
366 Logger::info('No update needed', ['server' => $server_url]);
367 return (!$gserver['failed']);
369 Logger::info('Server is outdated. Start discovery.', ['Server' => $server_url, 'Force' => $force]);
371 Logger::info('Server is unknown. Start discovery.', ['Server' => $server_url]);
374 return self::detect($server_url, $network, $only_nodeinfo);
378 * Reset failed server status by gserver id
381 * @param string $network
383 public static function setReachableById(int $gsid, string $network)
385 $gserver = DBA::selectFirst('gserver', ['url', 'failed', 'next_contact', 'network'], ['id' => $gsid]);
386 if (!DBA::isResult($gserver)) {
390 $blocked = Network::isUrlBlocked($gserver['url']);
391 if ($gserver['failed']) {
392 $fields = ['failed' => false, 'blocked' => $blocked, 'last_contact' => DateTimeFormat::utcNow()];
393 if (!empty($network) && !in_array($gserver['network'], Protocol::FEDERATED)) {
394 $fields['network'] = $network;
396 self::update($fields, ['id' => $gsid]);
397 Logger::info('Reset failed status for server', ['url' => $gserver['url']]);
399 if (strtotime($gserver['next_contact']) < time()) {
400 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
402 } elseif ($blocked) {
403 self::setBlockedById($gsid);
405 self::setUnblockedById($gsid);
410 * Set failed server status by gserver id
414 public static function setFailureById(int $gsid)
416 $gserver = DBA::selectFirst('gserver', ['url', 'failed', 'next_contact'], ['id' => $gsid]);
417 if (DBA::isResult($gserver) && !$gserver['failed']) {
418 self::update(['failed' => true, 'blocked' => Network::isUrlBlocked($gserver['url']), 'last_failure' => DateTimeFormat::utcNow()], ['id' => $gsid]);
419 Logger::info('Set failed status for server', ['url' => $gserver['url']]);
421 if (strtotime($gserver['next_contact']) < time()) {
422 UpdateGServer::add(Worker::PRIORITY_LOW, $gserver['url']);
427 public static function setUnblockedById(int $gsid)
429 $gserver = DBA::selectFirst('gserver', ['url'], ["(`blocked` OR `blocked` IS NULL) AND `id` = ?", $gsid]);
430 if (DBA::isResult($gserver)) {
431 self::update(['blocked' => false], ['id' => $gsid]);
432 Logger::info('Set unblocked status for server', ['url' => $gserver['url']]);
436 public static function setBlockedById(int $gsid)
438 $gserver = DBA::selectFirst('gserver', ['url'], ["(NOT `blocked` OR `blocked` IS NULL) AND `id` = ?", $gsid]);
439 if (DBA::isResult($gserver)) {
440 self::update(['blocked' => true, 'failed' => true], ['id' => $gsid]);
441 Logger::info('Set blocked status for server', ['url' => $gserver['url']]);
445 public static function setBlockedByUrl(string $url)
447 $gserver = DBA::selectFirst('gserver', ['url', 'id'], ["(NOT `blocked` OR `blocked` IS NULL) AND `nurl` = ?", Strings::normaliseLink($url)]);
448 if (DBA::isResult($gserver)) {
449 self::update(['blocked' => true, 'failed' => true], ['id' => $gserver['id']]);
450 Logger::info('Set blocked status for server', ['url' => $gserver['url']]);
455 * Set failed server status
459 public static function setFailureByUrl(string $url)
461 $gserver = DBA::selectFirst('gserver', [], ['nurl' => Strings::normaliseLink($url)]);
462 if (DBA::isResult($gserver)) {
463 $next_update = self::getNextUpdateDate(false, $gserver['created'], $gserver['last_contact']);
464 self::update(['url' => $url, 'failed' => true, 'blocked' => Network::isUrlBlocked($url), 'last_failure' => DateTimeFormat::utcNow(),
465 'next_contact' => $next_update, 'network' => Protocol::PHANTOM, 'detection-method' => null],
466 ['nurl' => Strings::normaliseLink($url)]);
467 Logger::info('Set failed status for existing server', ['url' => $url]);
468 if (self::isDefunct($gserver)) {
469 self::archiveContacts($gserver['id']);
473 self::insert(['url' => $url, 'nurl' => Strings::normaliseLink($url),
474 'network' => Protocol::PHANTOM, 'created' => DateTimeFormat::utcNow(),
475 'failed' => true, 'last_failure' => DateTimeFormat::utcNow()]);
476 Logger::info('Set failed status for new server', ['url' => $url]);
480 * Archive server related contacts and inboxes
482 * @param integer $gsid
485 private static function archiveContacts(int $gsid)
487 Contact::update(['archive' => true], ['gsid' => $gsid]);
488 DBA::update('inbox-status', ['archive' => true], ['gsid' => $gsid]);
492 * Remove unwanted content from the given URL
494 * @param string $dirtyUrl
496 * @return string cleaned URL
498 * @deprecated since 2023.03 Use cleanUri instead
500 public static function cleanURL(string $dirtyUrl): string
503 return (string)self::cleanUri(new Uri($dirtyUrl));
504 } catch (\Throwable $e) {
505 Logger::warning('Invalid URL', ['dirtyUrl' => $dirtyUrl]);
511 * Remove unwanted content from the given URI
513 * @param UriInterface $dirtyUri
515 * @return UriInterface cleaned URI
518 public static function cleanUri(UriInterface $dirtyUri): string
526 '#(?:^|/)index\.php#',
528 rtrim($dirtyUri->getPath(), '/')
534 * Detect server data (type, protocol, version number, ...)
535 * The detected data is then updated or inserted in the gserver table.
537 * @param string $url URL of the given server
538 * @param string $network Network value that is used, when detection failed
539 * @param boolean $only_nodeinfo Only use nodeinfo for server detection
541 * @return boolean 'true' if server could be detected
543 private static function detect(string $url, string $network = '', bool $only_nodeinfo = false): bool
545 Logger::info('Detect server type', ['server' => $url]);
547 $original_url = $url;
549 // Remove URL content that is not supposed to exist for a server url
550 $url = rtrim(self::cleanURL($url), '/');
552 Logger::notice('Empty URL.');
556 // If the URL missmatches, then we mark the old entry as failure
557 if (!Strings::compareLink($url, $original_url)) {
558 self::setFailureByUrl($original_url);
559 if (!self::getID($url, true)) {
560 self::detect($url, $network, $only_nodeinfo);
565 $valid_url = Network::isUrlValid($url);
567 self::setFailureByUrl($url);
570 $valid_url = rtrim($valid_url, '/');
573 if (!Strings::compareLink($url, $valid_url)) {
574 // We only follow redirects when the path stays the same or the target url has no path.
575 // Some systems have got redirects on their landing page to a single account page. This check handles it.
576 if (((parse_url($url, PHP_URL_HOST) != parse_url($valid_url, PHP_URL_HOST)) && (parse_url($url, PHP_URL_PATH) == parse_url($valid_url, PHP_URL_PATH))) ||
577 (((parse_url($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)))) {
578 Logger::debug('Found redirect. Mark old entry as failure', ['old' => $url, 'new' => $valid_url]);
579 self::setFailureByUrl($url);
580 if (!self::getID($valid_url, true)) {
581 self::detect($valid_url, $network, $only_nodeinfo);
586 if ((parse_url($url, PHP_URL_HOST) != parse_url($valid_url, PHP_URL_HOST)) && (parse_url($url, PHP_URL_PATH) != parse_url($valid_url, PHP_URL_PATH)) &&
587 (parse_url($url, PHP_URL_PATH) == '')) {
588 Logger::debug('Found redirect. Mark old entry as failure and redirect to the basepath.', ['old' => $url, 'new' => $valid_url]);
589 $parts = parse_url($valid_url);
590 unset($parts['path']);
591 $valid_url = (string)Uri::fromParts($parts);
593 self::setFailureByUrl($url);
594 if (!self::getID($valid_url, true)) {
595 self::detect($valid_url, $network, $only_nodeinfo);
599 Logger::debug('Found redirect, but ignore it.', ['old' => $url, 'new' => $valid_url]);
602 if ((parse_url($url, PHP_URL_HOST) == parse_url($valid_url, PHP_URL_HOST)) &&
603 (parse_url($url, PHP_URL_PATH) == parse_url($valid_url, PHP_URL_PATH)) &&
604 (parse_url($url, PHP_URL_SCHEME) != parse_url($valid_url, PHP_URL_SCHEME))) {
608 $in_webroot = empty(parse_url($url, PHP_URL_PATH));
610 // When a nodeinfo is present, we don't need to dig further
611 $curlResult = DI::httpClient()->get($url . '/.well-known/x-nodeinfo2', HttpClientAccept::JSON);
612 if ($curlResult->isTimeout()) {
613 self::setFailureByUrl($url);
617 $serverdata = self::parseNodeinfo210($curlResult);
618 if (empty($serverdata)) {
619 $curlResult = DI::httpClient()->get($url . '/.well-known/nodeinfo', HttpClientAccept::JSON);
620 $serverdata = self::fetchNodeinfo($url, $curlResult);
623 if ($only_nodeinfo && empty($serverdata)) {
624 Logger::info('Invalid nodeinfo in nodeinfo-mode, server is marked as failure', ['url' => $url]);
625 self::setFailureByUrl($url);
627 } elseif (empty($serverdata)) {
628 $serverdata = ['detection-method' => self::DETECT_MANUAL, 'network' => Protocol::PHANTOM, 'platform' => '', 'version' => '', 'site_name' => '', 'info' => ''];
631 // When there is no Nodeinfo, then use some protocol specific endpoints
632 if ($serverdata['network'] == Protocol::PHANTOM) {
634 // Fetch the landing page, possibly it reveals some data
635 $accept = 'application/activity+json,application/ld+json,application/json,*/*;q=0.9';
636 $curlResult = DI::httpClient()->get($url, $accept);
637 if (!$curlResult->isSuccess() && $curlResult->getReturnCode() == '406') {
638 $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML);
639 $html_fetched = true;
641 $html_fetched = false;
644 if ($curlResult->isSuccess()) {
645 $json = json_decode($curlResult->getBody(), true);
646 if (!empty($json) && is_array($json)) {
647 $data = self::fetchDataFromSystemActor($json, $serverdata);
648 $serverdata = $data['server'];
649 $systemactor = $data['actor'];
650 if (!$html_fetched && !in_array($serverdata['detection-method'], [self::DETECT_SYSTEM_ACTOR, self::DETECT_AP_COLLECTION])) {
651 $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML);
653 } elseif (!$html_fetched && (strlen($curlResult->getBody()) < 1000)) {
654 $curlResult = DI::httpClient()->get($url, HttpClientAccept::HTML);
657 if ($serverdata['detection-method'] != self::DETECT_SYSTEM_ACTOR) {
658 $serverdata = self::analyseRootHeader($curlResult, $serverdata);
659 $serverdata = self::analyseRootBody($curlResult, $serverdata);
663 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
664 self::setFailureByUrl($url);
668 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
669 $serverdata = self::detectMastodonAlikes($url, $serverdata);
673 // All following checks are done for systems that always have got a "host-meta" endpoint.
674 // With this check we don't have to waste time and ressources for dead systems.
675 // Also this hopefully prevents us from receiving abuse messages.
676 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
677 $validHostMeta = self::validHostMeta($url);
679 $validHostMeta = false;
682 if ($validHostMeta) {
683 if (in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_HEADER, self::DETECT_BODY])) {
684 $serverdata['detection-method'] = self::DETECT_HOST_META;
687 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
688 $serverdata = self::detectFriendica($url, $serverdata);
691 // The following systems have to be installed in the root directory.
693 // the 'siteinfo.json' is some specific endpoint of Hubzilla and Red
694 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
695 $serverdata = self::fetchSiteinfo($url, $serverdata);
698 // The 'siteinfo.json' doesn't seem to be present on older Hubzilla installations, so we check other endpoints as well
699 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
700 $serverdata = self::detectHubzilla($url, $serverdata);
703 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
704 $serverdata = self::detectPeertube($url, $serverdata);
707 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
708 $serverdata = self::detectGNUSocial($url, $serverdata);
711 } elseif (in_array($serverdata['platform'], ['friendica', 'friendika']) && in_array($serverdata['detection-method'], array_merge(self::DETECT_UNSPECIFIC, [self::DETECT_SYSTEM_ACTOR]))) {
712 $serverdata = self::detectFriendica($url, $serverdata);
715 if (($serverdata['network'] == Protocol::PHANTOM) || in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
716 $serverdata = self::detectNextcloud($url, $serverdata, $validHostMeta);
719 // When nodeinfo isn't present, we use the older 'statistics.json' endpoint
720 // Since this endpoint is only rarely used, we query it at a later time
721 if (in_array($serverdata['detection-method'], array_merge(self::DETECT_UNSPECIFIC, [self::DETECT_FRIENDICA, self::DETECT_CONFIG_JSON]))) {
722 $serverdata = self::fetchStatistics($url, $serverdata);
726 // When we hadn't been able to detect the network type, we use the hint from the parameter
727 if (($serverdata['network'] == Protocol::PHANTOM) && !empty($network)) {
728 $serverdata['network'] = $network;
731 // Most servers aren't installed in a subdirectory, so we declare this entry as failed
732 if (($serverdata['network'] == Protocol::PHANTOM) && !empty(parse_url($url, PHP_URL_PATH)) && in_array($serverdata['detection-method'], [self::DETECT_MANUAL])) {
733 self::setFailureByUrl($url);
737 $serverdata['url'] = $url;
738 $serverdata['nurl'] = Strings::normaliseLink($url);
740 // We have to prevent an endless loop here.
741 // When a server is new, then there is no gserver entry yet.
742 // But in "detectNetworkViaContacts" it could happen that a contact is updated,
743 // and this can call this function here as well.
744 if (self::getID($url, true) && (in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]) ||
745 in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_HOST_META]))) {
746 $serverdata = self::detectNetworkViaContacts($url, $serverdata);
749 if (($serverdata['network'] == Protocol::PHANTOM) && in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_BODY])) {
750 self::setFailureByUrl($url);
754 // Detect the directory type
755 $serverdata['directory-type'] = self::DT_NONE;
757 if (in_array($serverdata['network'], Protocol::FEDERATED)) {
758 $serverdata = self::checkMastodonDirectory($url, $serverdata);
760 if ($serverdata['directory-type'] == self::DT_NONE) {
761 $serverdata = self::checkPoCo($url, $serverdata);
765 if ($serverdata['network'] == Protocol::ACTIVITYPUB) {
766 $serverdata = self::fetchWeeklyUsage($url, $serverdata);
769 $serverdata['registered-users'] = $serverdata['registered-users'] ?? 0;
771 // Numbers above a reasonable value (10 millions) are ignored
772 if ($serverdata['registered-users'] > 10000000) {
773 $serverdata['registered-users'] = 0;
776 // On an active server there has to be at least a single user
777 if (!in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]) && ($serverdata['registered-users'] <= 0)) {
778 $serverdata['registered-users'] = 1;
779 } elseif (in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
780 $serverdata['registered-users'] = 0;
783 $serverdata['next_contact'] = self::getNextUpdateDate(true, '', '', in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED]));
784 $serverdata['last_contact'] = DateTimeFormat::utcNow();
785 $serverdata['failed'] = false;
786 $serverdata['blocked'] = false;
788 $gserver = DBA::selectFirst('gserver', ['network'], ['nurl' => Strings::normaliseLink($url)]);
789 if (!DBA::isResult($gserver)) {
790 $serverdata['created'] = DateTimeFormat::utcNow();
791 $ret = self::insert($serverdata);
792 $id = DBA::lastInsertId();
794 $ret = self::update($serverdata, ['nurl' => $serverdata['nurl']]);
795 $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => $serverdata['nurl']]);
796 if (DBA::isResult($gserver)) {
797 $id = $gserver['id'];
801 // Count the number of known contacts from this server
802 if (!empty($id) && !in_array($serverdata['network'], [Protocol::PHANTOM, Protocol::FEED])) {
803 $apcontacts = DBA::count('apcontact', ['gsid' => $id]);
804 $contacts = DBA::count('contact', ['uid' => 0, 'gsid' => $id, 'failed' => false]);
805 $max_users = max($apcontacts, $contacts);
806 if ($max_users > $serverdata['registered-users']) {
807 Logger::info('Update registered users', ['id' => $id, 'url' => $serverdata['nurl'], 'registered-users' => $max_users]);
808 self::update(['registered-users' => $max_users], ['id' => $id]);
811 if (empty($serverdata['active-month-users'])) {
812 $contacts = DBA::count('contact', ["`uid` = ? AND `gsid` = ? AND NOT `failed` AND `last-item` > ?", 0, $id, DateTimeFormat::utc('now - 30 days')]);
814 Logger::info('Update monthly users', ['id' => $id, 'url' => $serverdata['nurl'], 'monthly-users' => $contacts]);
815 self::update(['active-month-users' => $contacts], ['id' => $id]);
819 if (empty($serverdata['active-halfyear-users'])) {
820 $contacts = DBA::count('contact', ["`uid` = ? AND `gsid` = ? AND NOT `failed` AND `last-item` > ?", 0, $id, DateTimeFormat::utc('now - 180 days')]);
822 Logger::info('Update halfyear users', ['id' => $id, 'url' => $serverdata['nurl'], 'halfyear-users' => $contacts]);
823 self::update(['active-halfyear-users' => $contacts], ['id' => $id]);
828 if (in_array($serverdata['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
829 self::discoverRelay($url);
832 if (!empty($systemactor)) {
833 $contact = Contact::getByURL($systemactor, true, ['gsid', 'baseurl', 'id', 'network', 'url', 'name']);
834 Logger::debug('Fetched system actor', ['url' => $url, 'gsid' => $id, 'contact' => $contact]);
841 * Fetch relay data from a given server url
843 * @param string $server_url address of the server
847 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
849 private static function discoverRelay(string $server_url)
851 Logger::info('Discover relay data', ['server' => $server_url]);
853 $curlResult = DI::httpClient()->get($server_url . '/.well-known/x-social-relay', HttpClientAccept::JSON);
854 if (!$curlResult->isSuccess()) {
858 $data = json_decode($curlResult->getBody(), true);
859 if (!is_array($data)) {
863 // Sanitize incoming data, see https://github.com/friendica/friendica/issues/8565
864 $data['subscribe'] = (bool)$data['subscribe'] ?? false;
866 if (!$data['subscribe'] || empty($data['scope']) || !in_array(strtolower($data['scope']), ['all', 'tags'])) {
868 $data['subscribe'] = false;
872 $gserver = DBA::selectFirst('gserver', ['id', 'url', 'network', 'relay-subscribe', 'relay-scope'], ['nurl' => Strings::normaliseLink($server_url)]);
873 if (!DBA::isResult($gserver)) {
877 if (($gserver['relay-subscribe'] != $data['subscribe']) || ($gserver['relay-scope'] != $data['scope'])) {
878 $fields = ['relay-subscribe' => $data['subscribe'], 'relay-scope' => $data['scope']];
879 self::update($fields, ['id' => $gserver['id']]);
882 DBA::delete('gserver-tag', ['gserver-id' => $gserver['id']]);
884 if ($data['scope'] == 'tags') {
887 foreach ($data['tags'] as $tag) {
888 $tag = mb_strtolower($tag);
889 if (strlen($tag) < 100) {
894 foreach ($tags as $tag) {
895 DBA::insert('gserver-tag', ['gserver-id' => $gserver['id'], 'tag' => $tag], Database::INSERT_IGNORE);
899 // Create or update the relay contact
901 if (isset($data['protocols'])) {
902 if (isset($data['protocols']['diaspora'])) {
903 $fields['network'] = Protocol::DIASPORA;
905 if (isset($data['protocols']['diaspora']['receive'])) {
906 $fields['batch'] = $data['protocols']['diaspora']['receive'];
907 } elseif (is_string($data['protocols']['diaspora'])) {
908 $fields['batch'] = $data['protocols']['diaspora'];
912 if (isset($data['protocols']['dfrn'])) {
913 $fields['network'] = Protocol::DFRN;
915 if (isset($data['protocols']['dfrn']['receive'])) {
916 $fields['batch'] = $data['protocols']['dfrn']['receive'];
917 } elseif (is_string($data['protocols']['dfrn'])) {
918 $fields['batch'] = $data['protocols']['dfrn'];
922 if (isset($data['protocols']['activitypub'])) {
923 $fields['network'] = Protocol::ACTIVITYPUB;
925 if (!empty($data['protocols']['activitypub']['actor'])) {
926 $fields['url'] = $data['protocols']['activitypub']['actor'];
928 if (!empty($data['protocols']['activitypub']['receive'])) {
929 $fields['batch'] = $data['protocols']['activitypub']['receive'];
934 Logger::info('Discovery ended', ['server' => $server_url, 'data' => $fields]);
936 Relay::updateContact($gserver, $fields);
940 * Fetch server data from '/statistics.json' on the given server
942 * @param string $url URL of the given server
944 * @return array server data
946 private static function fetchStatistics(string $url, array $serverdata): array
948 $curlResult = DI::httpClient()->get($url . '/statistics.json', HttpClientAccept::JSON);
949 if (!$curlResult->isSuccess()) {
953 $data = json_decode($curlResult->getBody(), true);
958 // Some AP enabled systems return activity data that we don't expect here.
959 if (strpos($curlResult->getContentType(), 'application/activity+json') !== false) {
964 $old_serverdata = $serverdata;
966 $serverdata['detection-method'] = self::DETECT_STATISTICS_JSON;
968 if (!empty($data['version'])) {
970 $serverdata['version'] = $data['version'];
971 // Version numbers on statistics.json are presented with additional info, e.g.:
972 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
973 $serverdata['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $serverdata['version']);
976 if (!empty($data['name'])) {
978 $serverdata['site_name'] = $data['name'];
981 if (!empty($data['network'])) {
983 $serverdata['platform'] = strtolower($data['network']);
985 if ($serverdata['platform'] == 'diaspora') {
986 $serverdata['network'] = Protocol::DIASPORA;
987 } elseif ($serverdata['platform'] == 'friendica') {
988 $serverdata['network'] = Protocol::DFRN;
989 } elseif ($serverdata['platform'] == 'hubzilla') {
990 $serverdata['network'] = Protocol::ZOT;
991 } elseif ($serverdata['platform'] == 'redmatrix') {
992 $serverdata['network'] = Protocol::ZOT;
996 if (!empty($data['total_users'])) {
998 $serverdata['registered-users'] = max($data['total_users'], 1);
1001 if (!empty($data['active_users_monthly'])) {
1003 $serverdata['active-month-users'] = max($data['active_users_monthly'], 0);
1006 if (!empty($data['active_users_halfyear'])) {
1008 $serverdata['active-halfyear-users'] = max($data['active_users_halfyear'], 0);
1011 if (!empty($data['local_posts'])) {
1013 $serverdata['local-posts'] = max($data['local_posts'], 0);
1016 if (!empty($data['registrations_open'])) {
1017 $serverdata['register_policy'] = Register::OPEN;
1019 $serverdata['register_policy'] = Register::CLOSED;
1023 return $old_serverdata;
1030 * Detect server type by using the nodeinfo data
1032 * @param string $url address of the server
1033 * @param ICanHandleHttpResponses $httpResult
1035 * @return array Server data
1037 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1039 private static function fetchNodeinfo(string $url, ICanHandleHttpResponses $httpResult): array
1041 if (!$httpResult->isSuccess()) {
1045 $nodeinfo = json_decode($httpResult->getBody(), true);
1047 if (!is_array($nodeinfo) || empty($nodeinfo['links'])) {
1051 $nodeinfo1_url = '';
1052 $nodeinfo2_url = '';
1054 foreach ($nodeinfo['links'] as $link) {
1055 if (!is_array($link) || empty($link['rel']) || empty($link['href'])) {
1056 Logger::info('Invalid nodeinfo format', ['url' => $url]);
1059 if ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/1.0') {
1060 $nodeinfo1_url = $link['href'];
1061 } elseif ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/2.0') {
1062 $nodeinfo2_url = $link['href'];
1066 if ($nodeinfo1_url . $nodeinfo2_url == '') {
1072 if (!empty($nodeinfo2_url)) {
1073 $server = self::parseNodeinfo2($nodeinfo2_url);
1076 if (empty($server) && !empty($nodeinfo1_url)) {
1077 $server = self::parseNodeinfo1($nodeinfo1_url);
1086 * @param string $nodeinfo_url address of the nodeinfo path
1088 * @return array Server data
1090 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1092 private static function parseNodeinfo1(string $nodeinfo_url): array
1094 $curlResult = DI::httpClient()->get($nodeinfo_url, HttpClientAccept::JSON);
1095 if (!$curlResult->isSuccess()) {
1099 $nodeinfo = json_decode($curlResult->getBody(), true);
1101 if (!is_array($nodeinfo)) {
1105 $server = ['detection-method' => self::DETECT_NODEINFO_1,
1106 'register_policy' => Register::CLOSED];
1108 if (!empty($nodeinfo['openRegistrations'])) {
1109 $server['register_policy'] = Register::OPEN;
1112 if (is_array($nodeinfo['software'])) {
1113 if (!empty($nodeinfo['software']['name'])) {
1114 $server['platform'] = strtolower($nodeinfo['software']['name']);
1117 if (!empty($nodeinfo['software']['version'])) {
1118 $server['version'] = $nodeinfo['software']['version'];
1119 // Version numbers on Nodeinfo are presented with additional info, e.g.:
1120 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
1121 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
1125 if (!empty($nodeinfo['metadata']['nodeName'])) {
1126 $server['site_name'] = $nodeinfo['metadata']['nodeName'];
1129 if (!empty($nodeinfo['usage']['users']['total'])) {
1130 $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
1133 if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
1134 $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
1137 if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
1138 $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
1141 if (!empty($nodeinfo['usage']['localPosts'])) {
1142 $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
1145 if (!empty($nodeinfo['usage']['localComments'])) {
1146 $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
1149 if (!empty($nodeinfo['protocols']['inbound']) && is_array($nodeinfo['protocols']['inbound'])) {
1151 foreach ($nodeinfo['protocols']['inbound'] as $protocol) {
1152 $protocols[$protocol] = true;
1155 if (!empty($protocols['friendica'])) {
1156 $server['network'] = Protocol::DFRN;
1157 } elseif (!empty($protocols['activitypub'])) {
1158 $server['network'] = Protocol::ACTIVITYPUB;
1159 } elseif (!empty($protocols['diaspora'])) {
1160 $server['network'] = Protocol::DIASPORA;
1161 } elseif (!empty($protocols['ostatus'])) {
1162 $server['network'] = Protocol::OSTATUS;
1163 } elseif (!empty($protocols['gnusocial'])) {
1164 $server['network'] = Protocol::OSTATUS;
1165 } elseif (!empty($protocols['zot'])) {
1166 $server['network'] = Protocol::ZOT;
1170 if (empty($server)) {
1174 if (empty($server['network'])) {
1175 $server['network'] = Protocol::PHANTOM;
1184 * @see https://git.feneas.org/jaywink/nodeinfo2
1186 * @param string $nodeinfo_url address of the nodeinfo path
1188 * @return array Server data
1190 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1192 private static function parseNodeinfo2(string $nodeinfo_url): array
1194 $curlResult = DI::httpClient()->get($nodeinfo_url, HttpClientAccept::JSON);
1195 if (!$curlResult->isSuccess()) {
1199 $nodeinfo = json_decode($curlResult->getBody(), true);
1200 if (!is_array($nodeinfo)) {
1205 'detection-method' => self::DETECT_NODEINFO_2,
1206 'register_policy' => Register::CLOSED,
1207 'platform' => 'unknown',
1210 if (!empty($nodeinfo['openRegistrations'])) {
1211 $server['register_policy'] = Register::OPEN;
1214 if (!empty($nodeinfo['software'])) {
1215 if (isset($nodeinfo['software']['name'])) {
1216 $server['platform'] = strtolower($nodeinfo['software']['name']);
1219 if (!empty($nodeinfo['software']['version']) && isset($server['platform'])) {
1220 $server['version'] = $nodeinfo['software']['version'];
1221 // Version numbers on Nodeinfo are presented with additional info, e.g.:
1222 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
1223 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
1225 // qoto advertises itself as Mastodon
1226 if (($server['platform'] == 'mastodon') && substr($nodeinfo['software']['version'], -5) == '-qoto') {
1227 $server['platform'] = 'qoto';
1232 if (!empty($nodeinfo['metadata']['nodeName'])) {
1233 $server['site_name'] = $nodeinfo['metadata']['nodeName'];
1236 if (!empty($nodeinfo['usage']['users']['total'])) {
1237 $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
1240 if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
1241 $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
1244 if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
1245 $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
1248 if (!empty($nodeinfo['usage']['localPosts'])) {
1249 $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
1252 if (!empty($nodeinfo['usage']['localComments'])) {
1253 $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
1256 if (!empty($nodeinfo['protocols'])) {
1258 foreach ($nodeinfo['protocols'] as $protocol) {
1259 if (is_string($protocol)) {
1260 $protocols[$protocol] = true;
1264 if (!empty($protocols['dfrn'])) {
1265 $server['network'] = Protocol::DFRN;
1266 } elseif (!empty($protocols['activitypub'])) {
1267 $server['network'] = Protocol::ACTIVITYPUB;
1268 } elseif (!empty($protocols['diaspora'])) {
1269 $server['network'] = Protocol::DIASPORA;
1270 } elseif (!empty($protocols['ostatus'])) {
1271 $server['network'] = Protocol::OSTATUS;
1272 } elseif (!empty($protocols['gnusocial'])) {
1273 $server['network'] = Protocol::OSTATUS;
1274 } elseif (!empty($protocols['zot'])) {
1275 $server['network'] = Protocol::ZOT;
1279 if (empty($server)) {
1283 if (empty($server['network'])) {
1284 $server['network'] = Protocol::PHANTOM;
1291 * Parses NodeInfo2 protocol 1.0
1293 * @see https://github.com/jaywink/nodeinfo2/blob/master/PROTOCOL.md
1295 * @param string $nodeinfo_url address of the nodeinfo path
1297 * @return array Server data
1299 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1301 private static function parseNodeinfo210(ICanHandleHttpResponses $httpResult): array
1303 if (!$httpResult->isSuccess()) {
1307 $nodeinfo = json_decode($httpResult->getBody(), true);
1309 if (!is_array($nodeinfo)) {
1313 $server = ['detection-method' => self::DETECT_NODEINFO_210,
1314 'register_policy' => Register::CLOSED];
1316 if (!empty($nodeinfo['openRegistrations'])) {
1317 $server['register_policy'] = Register::OPEN;
1320 if (!empty($nodeinfo['server'])) {
1321 if (!empty($nodeinfo['server']['software'])) {
1322 $server['platform'] = strtolower($nodeinfo['server']['software']);
1325 if (!empty($nodeinfo['server']['version'])) {
1326 $server['version'] = $nodeinfo['server']['version'];
1327 // Version numbers on Nodeinfo are presented with additional info, e.g.:
1328 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
1329 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
1332 if (!empty($nodeinfo['server']['name'])) {
1333 $server['site_name'] = $nodeinfo['server']['name'];
1337 if (!empty($nodeinfo['usage']['users']['total'])) {
1338 $server['registered-users'] = max($nodeinfo['usage']['users']['total'], 1);
1341 if (!empty($nodeinfo['usage']['users']['activeMonth'])) {
1342 $server['active-month-users'] = max($nodeinfo['usage']['users']['activeMonth'], 0);
1345 if (!empty($nodeinfo['usage']['users']['activeHalfyear'])) {
1346 $server['active-halfyear-users'] = max($nodeinfo['usage']['users']['activeHalfyear'], 0);
1349 if (!empty($nodeinfo['usage']['localPosts'])) {
1350 $server['local-posts'] = max($nodeinfo['usage']['localPosts'], 0);
1353 if (!empty($nodeinfo['usage']['localComments'])) {
1354 $server['local-comments'] = max($nodeinfo['usage']['localComments'], 0);
1357 if (!empty($nodeinfo['protocols'])) {
1359 foreach ($nodeinfo['protocols'] as $protocol) {
1360 if (is_string($protocol)) {
1361 $protocols[$protocol] = true;
1365 if (!empty($protocols['dfrn'])) {
1366 $server['network'] = Protocol::DFRN;
1367 } elseif (!empty($protocols['activitypub'])) {
1368 $server['network'] = Protocol::ACTIVITYPUB;
1369 } elseif (!empty($protocols['diaspora'])) {
1370 $server['network'] = Protocol::DIASPORA;
1371 } elseif (!empty($protocols['ostatus'])) {
1372 $server['network'] = Protocol::OSTATUS;
1373 } elseif (!empty($protocols['gnusocial'])) {
1374 $server['network'] = Protocol::OSTATUS;
1375 } elseif (!empty($protocols['zot'])) {
1376 $server['network'] = Protocol::ZOT;
1380 if (empty($server) || empty($server['platform'])) {
1384 if (empty($server['network'])) {
1385 $server['network'] = Protocol::PHANTOM;
1392 * Fetch server information from a 'siteinfo.json' file on the given server
1394 * @param string $url URL of the given server
1395 * @param array $serverdata array with server data
1397 * @return array server data
1399 private static function fetchSiteinfo(string $url, array $serverdata): array
1401 $curlResult = DI::httpClient()->get($url . '/siteinfo.json', HttpClientAccept::JSON);
1402 if (!$curlResult->isSuccess()) {
1406 $data = json_decode($curlResult->getBody(), true);
1411 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1412 $serverdata['detection-method'] = self::DETECT_SITEINFO_JSON;
1415 if (!empty($data['url'])) {
1416 $serverdata['platform'] = strtolower($data['platform']);
1417 $serverdata['version'] = $data['version'] ?? 'N/A';
1420 if (!empty($data['plugins'])) {
1421 if (in_array('pubcrawl', $data['plugins'])) {
1422 $serverdata['network'] = Protocol::ACTIVITYPUB;
1423 } elseif (in_array('diaspora', $data['plugins'])) {
1424 $serverdata['network'] = Protocol::DIASPORA;
1425 } elseif (in_array('gnusoc', $data['plugins'])) {
1426 $serverdata['network'] = Protocol::OSTATUS;
1428 $serverdata['network'] = Protocol::ZOT;
1432 if (!empty($data['site_name'])) {
1433 $serverdata['site_name'] = $data['site_name'];
1436 if (!empty($data['channels_total'])) {
1437 $serverdata['registered-users'] = max($data['channels_total'], 1);
1440 if (!empty($data['channels_active_monthly'])) {
1441 $serverdata['active-month-users'] = max($data['channels_active_monthly'], 0);
1444 if (!empty($data['channels_active_halfyear'])) {
1445 $serverdata['active-halfyear-users'] = max($data['channels_active_halfyear'], 0);
1448 if (!empty($data['local_posts'])) {
1449 $serverdata['local-posts'] = max($data['local_posts'], 0);
1452 if (!empty($data['local_comments'])) {
1453 $serverdata['local-comments'] = max($data['local_comments'], 0);
1456 if (!empty($data['register_policy'])) {
1457 switch ($data['register_policy']) {
1458 case 'REGISTER_OPEN':
1459 $serverdata['register_policy'] = Register::OPEN;
1462 case 'REGISTER_APPROVE':
1463 $serverdata['register_policy'] = Register::APPROVE;
1466 case 'REGISTER_CLOSED':
1468 $serverdata['register_policy'] = Register::CLOSED;
1477 * Fetches server data via an ActivityPub account with url of that server
1479 * @param string $url URL of the given server
1480 * @param array $serverdata array with server data
1482 * @return array server data
1486 private static function fetchDataFromSystemActor(array $data, array $serverdata): array
1489 return ['server' => $serverdata, 'actor' => ''];
1492 $actor = JsonLD::compact($data, false);
1493 if (in_array(JsonLD::fetchElement($actor, '@type'), ActivityPub\Receiver::ACCOUNT_TYPES)) {
1494 $serverdata['network'] = Protocol::ACTIVITYPUB;
1495 $serverdata['site_name'] = JsonLD::fetchElement($actor, 'as:name', '@value');
1496 $serverdata['info'] = JsonLD::fetchElement($actor, 'as:summary', '@value');
1497 if (!empty($actor['as:generator'])) {
1498 $generator = explode(' ', JsonLD::fetchElement($actor['as:generator'], 'as:name', '@value'));
1499 $serverdata['platform'] = strtolower(array_shift($generator));
1500 $serverdata['detection-method'] = self::DETECT_SYSTEM_ACTOR;
1502 $serverdata['detection-method'] = self::DETECT_AP_ACTOR;
1504 return ['server' => $serverdata, 'actor' => $actor['@id']];
1505 } elseif ((JsonLD::fetchElement($actor, '@type') == 'as:Collection')) {
1506 // By now only Ktistec seems to provide collections this way
1507 $serverdata['platform'] = 'ktistec';
1508 $serverdata['network'] = Protocol::ACTIVITYPUB;
1509 $serverdata['detection-method'] = self::DETECT_AP_COLLECTION;
1511 $actors = JsonLD::fetchElementArray($actor, 'as:items');
1512 if (!empty($actors) && !empty($actors[0]['@id'])) {
1513 $actor_url = $actor['@id'] . $actors[0]['@id'];
1518 return ['server' => $serverdata, 'actor' => $actor_url];
1520 return ['server' => $serverdata, 'actor' => ''];
1524 * Checks if the server contains a valid host meta file
1526 * @param string $url URL of the given server
1528 * @return boolean 'true' if the server seems to be vital
1530 private static function validHostMeta(string $url): bool
1532 $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
1533 $curlResult = DI::httpClient()->get($url . Probe::HOST_META, HttpClientAccept::XRD_XML, [HttpClientOptions::TIMEOUT => $xrd_timeout]);
1534 if (!$curlResult->isSuccess()) {
1538 $xrd = XML::parseString($curlResult->getBody(), true);
1539 if (!is_object($xrd)) {
1543 $elements = XML::elementToArray($xrd);
1544 if (empty($elements) || empty($elements['xrd']) || empty($elements['xrd']['link'])) {
1549 foreach ($elements['xrd']['link'] as $link) {
1550 // When there is more than a single "link" element, the array looks slightly different
1551 if (!empty($link['@attributes'])) {
1552 $link = $link['@attributes'];
1555 if (empty($link['rel']) || empty($link['template'])) {
1559 if ($link['rel'] == 'lrdd') {
1560 // When the webfinger host is the same like the system host, it should be ok.
1561 $valid = (parse_url($url, PHP_URL_HOST) == parse_url($link['template'], PHP_URL_HOST));
1569 * Detect the network of the given server via their known contacts
1571 * @param string $url URL of the given server
1572 * @param array $serverdata array with server data
1574 * @return array server data
1576 private static function detectNetworkViaContacts(string $url, array $serverdata): array
1580 $nurl = Strings::normaliseLink($url);
1582 $apcontacts = DBA::select('apcontact', ['url'], ['baseurl' => [$url, $nurl]]);
1583 while ($apcontact = DBA::fetch($apcontacts)) {
1584 $contacts[Strings::normaliseLink($apcontact['url'])] = $apcontact['url'];
1586 DBA::close($apcontacts);
1588 $pcontacts = DBA::select('contact', ['url', 'nurl'], ['uid' => 0, 'baseurl' => [$url, $nurl]]);
1589 while ($pcontact = DBA::fetch($pcontacts)) {
1590 $contacts[$pcontact['nurl']] = $pcontact['url'];
1592 DBA::close($pcontacts);
1594 if (empty($contacts)) {
1599 foreach ($contacts as $contact) {
1600 // Endlosschleife verhindern wegen gsid!
1601 $data = Probe::uri($contact);
1602 if (in_array($data['network'], Protocol::FEDERATED)) {
1603 $serverdata['network'] = $data['network'];
1605 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1606 $serverdata['detection-method'] = self::DETECT_CONTACTS;
1609 } elseif ((time() - $time) > 10) {
1610 // To reduce the stress on remote systems we probe a maximum of 10 seconds
1619 * Checks if the given server does have a '/poco' endpoint.
1620 * This is used for the 'PortableContact' functionality,
1621 * which is used by both Friendica and Hubzilla.
1623 * @param string $url URL of the given server
1624 * @param array $serverdata array with server data
1626 * @return array server data
1628 private static function checkPoCo(string $url, array $serverdata): array
1630 $serverdata['poco'] = '';
1632 $curlResult = DI::httpClient()->get($url . '/poco', HttpClientAccept::JSON);
1633 if (!$curlResult->isSuccess()) {
1637 $data = json_decode($curlResult->getBody(), true);
1642 if (!empty($data['totalResults'])) {
1643 $registeredUsers = $serverdata['registered-users'] ?? 0;
1644 $serverdata['registered-users'] = max($data['totalResults'], $registeredUsers, 1);
1645 $serverdata['directory-type'] = self::DT_POCO;
1646 $serverdata['poco'] = $url . '/poco';
1653 * Checks if the given server does have a Mastodon style directory endpoint.
1655 * @param string $url URL of the given server
1656 * @param array $serverdata array with server data
1658 * @return array server data
1660 public static function checkMastodonDirectory(string $url, array $serverdata): array
1662 $curlResult = DI::httpClient()->get($url . '/api/v1/directory?limit=1', HttpClientAccept::JSON);
1663 if (!$curlResult->isSuccess()) {
1667 $data = json_decode($curlResult->getBody(), true);
1672 if (count($data) == 1) {
1673 $serverdata['directory-type'] = self::DT_MASTODON;
1680 * Detects Peertube via their known endpoint
1682 * @param string $url URL of the given server
1683 * @param array $serverdata array with server data
1685 * @return array server data
1687 private static function detectPeertube(string $url, array $serverdata): array
1689 $curlResult = DI::httpClient()->get($url . '/api/v1/config', HttpClientAccept::JSON);
1690 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1694 $data = json_decode($curlResult->getBody(), true);
1699 if (!empty($data['instance']) && !empty($data['serverVersion'])) {
1700 $serverdata['platform'] = 'peertube';
1701 $serverdata['version'] = $data['serverVersion'];
1702 $serverdata['network'] = Protocol::ACTIVITYPUB;
1704 if (!empty($data['instance']['name'])) {
1705 $serverdata['site_name'] = $data['instance']['name'];
1708 if (!empty($data['instance']['shortDescription'])) {
1709 $serverdata['info'] = $data['instance']['shortDescription'];
1712 if (!empty($data['signup'])) {
1713 if (!empty($data['signup']['allowed'])) {
1714 $serverdata['register_policy'] = Register::OPEN;
1718 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1719 $serverdata['detection-method'] = self::DETECT_V1_CONFIG;
1727 * Detects the version number of a given server when it was a NextCloud installation
1729 * @param string $url URL of the given server
1730 * @param array $serverdata array with server data
1731 * @param bool $validHostMeta
1733 * @return array server data
1735 private static function detectNextcloud(string $url, array $serverdata, bool $validHostMeta): array
1737 $curlResult = DI::httpClient()->get($url . '/status.php', HttpClientAccept::JSON);
1738 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1742 $data = json_decode($curlResult->getBody(), true);
1747 if (!empty($data['version'])) {
1748 $serverdata['platform'] = 'nextcloud';
1749 $serverdata['version'] = $data['version'];
1751 if ($validHostMeta) {
1752 $serverdata['network'] = Protocol::ACTIVITYPUB;
1755 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1756 $serverdata['detection-method'] = self::DETECT_STATUS_PHP;
1764 * Fetches weekly usage data
1766 * @param string $url URL of the given server
1767 * @param array $serverdata array with server data
1769 * @return array server data
1771 private static function fetchWeeklyUsage(string $url, array $serverdata): array
1773 $curlResult = DI::httpClient()->get($url . '/api/v1/instance/activity', HttpClientAccept::JSON);
1774 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1778 $data = json_decode($curlResult->getBody(), true);
1784 foreach ($data as $week) {
1785 // Use only data from a full week
1786 if (empty($week['week']) || (time() - $week['week']) < 7 * 24 * 60 * 60) {
1790 // Most likely the data is sorted correctly. But we better are safe than sorry
1791 if (empty($current_week['week']) || ($current_week['week'] < $week['week'])) {
1792 $current_week = $week;
1796 if (!empty($current_week['logins'])) {
1797 $serverdata['active-week-users'] = max($current_week['logins'], 0);
1804 * Detects data from a given server url if it was a mastodon alike system
1806 * @param string $url URL of the given server
1807 * @param array $serverdata array with server data
1809 * @return array server data
1811 private static function detectMastodonAlikes(string $url, array $serverdata): array
1813 $curlResult = DI::httpClient()->get($url . '/api/v1/instance', HttpClientAccept::JSON);
1814 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1818 $data = json_decode($curlResult->getBody(), true);
1825 if (!empty($data['version'])) {
1826 $serverdata['platform'] = 'mastodon';
1827 $serverdata['version'] = $data['version'] ?? '';
1828 $serverdata['network'] = Protocol::ACTIVITYPUB;
1832 if (!empty($data['title'])) {
1833 $serverdata['site_name'] = $data['title'];
1836 if (!empty($data['title']) && empty($serverdata['platform']) && ($serverdata['network'] == Protocol::PHANTOM)) {
1837 $serverdata['platform'] = 'mastodon';
1838 $serverdata['network'] = Protocol::ACTIVITYPUB;
1842 if (!empty($data['description'])) {
1843 $serverdata['info'] = trim($data['description']);
1846 if (!empty($data['stats']['user_count'])) {
1847 $serverdata['registered-users'] = max($data['stats']['user_count'], 1);
1850 if (!empty($serverdata['version']) && preg_match('/.*?\(compatible;\s(.*)\s(.*)\)/ism', $serverdata['version'], $matches)) {
1851 $serverdata['platform'] = strtolower($matches[1]);
1852 $serverdata['version'] = $matches[2];
1856 if (!empty($serverdata['version']) && strstr(strtolower($serverdata['version']), 'pleroma')) {
1857 $serverdata['platform'] = 'pleroma';
1858 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['version']));
1862 if (!empty($serverdata['platform']) && strstr($serverdata['platform'], 'pleroma')) {
1863 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['platform']));
1864 $serverdata['platform'] = 'pleroma';
1868 if ($valid && in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1869 $serverdata['detection-method'] = self::DETECT_MASTODON_API;
1876 * Detects data from typical Hubzilla endpoints
1878 * @param string $url URL of the given server
1879 * @param array $serverdata array with server data
1881 * @return array server data
1883 private static function detectHubzilla(string $url, array $serverdata): array
1885 $curlResult = DI::httpClient()->get($url . '/api/statusnet/config.json', HttpClientAccept::JSON);
1886 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1890 $data = json_decode($curlResult->getBody(), true);
1891 if (empty($data) || empty($data['site'])) {
1895 if (!empty($data['site']['name'])) {
1896 $serverdata['site_name'] = $data['site']['name'];
1899 if (!empty($data['site']['platform'])) {
1900 $serverdata['platform'] = strtolower($data['site']['platform']['PLATFORM_NAME']);
1901 $serverdata['version'] = $data['site']['platform']['STD_VERSION'];
1902 $serverdata['network'] = Protocol::ZOT;
1905 if (!empty($data['site']['hubzilla'])) {
1906 $serverdata['platform'] = strtolower($data['site']['hubzilla']['PLATFORM_NAME']);
1907 $serverdata['version'] = $data['site']['hubzilla']['RED_VERSION'];
1908 $serverdata['network'] = Protocol::ZOT;
1911 if (!empty($data['site']['redmatrix'])) {
1912 if (!empty($data['site']['redmatrix']['PLATFORM_NAME'])) {
1913 $serverdata['platform'] = strtolower($data['site']['redmatrix']['PLATFORM_NAME']);
1914 } elseif (!empty($data['site']['redmatrix']['RED_PLATFORM'])) {
1915 $serverdata['platform'] = strtolower($data['site']['redmatrix']['RED_PLATFORM']);
1918 $serverdata['version'] = $data['site']['redmatrix']['RED_VERSION'];
1919 $serverdata['network'] = Protocol::ZOT;
1923 $inviteonly = false;
1926 if (!empty($data['site']['closed'])) {
1927 $closed = self::toBoolean($data['site']['closed']);
1930 if (!empty($data['site']['private'])) {
1931 $private = self::toBoolean($data['site']['private']);
1934 if (!empty($data['site']['inviteonly'])) {
1935 $inviteonly = self::toBoolean($data['site']['inviteonly']);
1938 if (!$closed && !$private and $inviteonly) {
1939 $serverdata['register_policy'] = Register::APPROVE;
1940 } elseif (!$closed && !$private) {
1941 $serverdata['register_policy'] = Register::OPEN;
1943 $serverdata['register_policy'] = Register::CLOSED;
1946 if (($serverdata['network'] != Protocol::PHANTOM) && in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1947 $serverdata['detection-method'] = self::DETECT_CONFIG_JSON;
1954 * Converts input value to a boolean value
1956 * @param string|integer $val
1960 private static function toBoolean($val): bool
1962 if (($val == 'true') || ($val == 1)) {
1964 } elseif (($val == 'false') || ($val == 0)) {
1972 * Detect if the URL belongs to a GNU Social server
1974 * @param string $url URL of the given server
1975 * @param array $serverdata array with server data
1977 * @return array server data
1979 private static function detectGNUSocial(string $url, array $serverdata): array
1981 // Test for GNU Social
1982 $curlResult = DI::httpClient()->get($url . '/api/gnusocial/version.json', HttpClientAccept::JSON);
1983 if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
1984 ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
1985 $serverdata['platform'] = 'gnusocial';
1986 // Remove junk that some GNU Social servers return
1987 $serverdata['version'] = str_replace(chr(239) . chr(187) . chr(191), '', $curlResult->getBody());
1988 $serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
1989 $serverdata['version'] = trim($serverdata['version'], '"');
1990 $serverdata['network'] = Protocol::OSTATUS;
1992 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
1993 $serverdata['detection-method'] = self::DETECT_GNUSOCIAL;
1999 // Test for Statusnet
2000 $curlResult = DI::httpClient()->get($url . '/api/statusnet/version.json', HttpClientAccept::JSON);
2001 if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
2002 ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
2004 // Remove junk that some GNU Social servers return
2005 $serverdata['version'] = str_replace(chr(239).chr(187).chr(191), '', $curlResult->getBody());
2006 $serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
2007 $serverdata['version'] = trim($serverdata['version'], '"');
2009 if (!empty($serverdata['version']) && strtolower(substr($serverdata['version'], 0, 7)) == 'pleroma') {
2010 $serverdata['platform'] = 'pleroma';
2011 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['version']));
2012 $serverdata['network'] = Protocol::ACTIVITYPUB;
2014 $serverdata['platform'] = 'statusnet';
2015 $serverdata['network'] = Protocol::OSTATUS;
2018 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
2019 $serverdata['detection-method'] = self::DETECT_STATUSNET;
2027 * Detect if the URL belongs to a Friendica server
2029 * @param string $url URL of the given server
2030 * @param array $serverdata array with server data
2032 * @return array server data
2034 private static function detectFriendica(string $url, array $serverdata): array
2036 // There is a bug in some versions of Friendica that will return an ActivityStream actor when the content type "application/json" is requested.
2037 // Because of this me must not use ACCEPT_JSON here.
2038 $curlResult = DI::httpClient()->get($url . '/friendica/json');
2039 if (!$curlResult->isSuccess()) {
2040 $curlResult = DI::httpClient()->get($url . '/friendika/json');
2042 $platform = 'Friendika';
2045 $platform = 'Friendica';
2048 if (!$curlResult->isSuccess()) {
2052 $data = json_decode($curlResult->getBody(), true);
2053 if (empty($data) || empty($data['version'])) {
2057 if (in_array($serverdata['detection-method'], self::DETECT_UNSPECIFIC)) {
2058 $serverdata['detection-method'] = $friendika ? self::DETECT_FRIENDIKA : self::DETECT_FRIENDICA;
2061 $serverdata['network'] = Protocol::DFRN;
2062 $serverdata['version'] = $data['version'];
2064 if (!empty($data['no_scrape_url'])) {
2065 $serverdata['noscrape'] = $data['no_scrape_url'];
2068 if (!empty($data['site_name'])) {
2069 $serverdata['site_name'] = $data['site_name'];
2072 if (!empty($data['info'])) {
2073 $serverdata['info'] = trim($data['info']);
2076 $register_policy = ($data['register_policy'] ?? '') ?: 'REGISTER_CLOSED';
2077 switch ($register_policy) {
2078 case 'REGISTER_OPEN':
2079 $serverdata['register_policy'] = Register::OPEN;
2082 case 'REGISTER_APPROVE':
2083 $serverdata['register_policy'] = Register::APPROVE;
2086 case 'REGISTER_CLOSED':
2087 case 'REGISTER_INVITATION':
2088 $serverdata['register_policy'] = Register::CLOSED;
2091 Logger::info('Register policy is invalid', ['policy' => $register_policy, 'server' => $url]);
2092 $serverdata['register_policy'] = Register::CLOSED;
2096 $serverdata['platform'] = strtolower($data['platform'] ?? $platform);
2102 * Analyses the landing page of a given server for hints about type and system of that server
2104 * @param object $curlResult result of curl execution
2105 * @param array $serverdata array with server data
2107 * @return array server data
2109 private static function analyseRootBody($curlResult, array $serverdata): array
2111 if (empty($curlResult->getBody())) {
2115 if (file_exists(__DIR__ . '/../../static/platforms.config.php')) {
2116 require __DIR__ . '/../../static/platforms.config.php';
2118 throw new HTTPException\InternalServerErrorException('Invalid platform file');
2121 $platforms = array_merge($ap_platforms, $dfrn_platforms, $zap_platforms, $platforms);
2123 $doc = new DOMDocument();
2124 @$doc->loadHTML($curlResult->getBody());
2125 $xpath = new DOMXPath($doc);
2128 // We can only detect honk via some HTML element on their page
2129 if ($xpath->query('//div[@id="honksonpage"]')->count() == 1) {
2130 $serverdata['platform'] = 'honk';
2131 $serverdata['network'] = Protocol::ACTIVITYPUB;
2135 $title = trim(XML::getFirstNodeValue($xpath, '//head/title/text()'));
2136 if (!empty($title)) {
2137 $serverdata['site_name'] = $title;
2140 $list = $xpath->query('//meta[@name]');
2142 foreach ($list as $node) {
2144 if ($node->attributes->length) {
2145 foreach ($node->attributes as $attribute) {
2146 $value = trim($attribute->value);
2147 if (empty($value)) {
2151 $attr[$attribute->name] = $value;
2154 if (empty($attr['name']) || empty($attr['content'])) {
2159 if ($attr['name'] == 'description') {
2160 $serverdata['info'] = $attr['content'];
2163 if (in_array($attr['name'], ['application-name', 'al:android:app_name', 'al:ios:app_name',
2164 'twitter:app:name:googleplay', 'twitter:app:name:iphone', 'twitter:app:name:ipad', 'generator'])) {
2165 $platform = str_ireplace(array_keys($platforms), array_values($platforms), $attr['content']);
2166 $platform = str_replace('/', ' ', $platform);
2167 $platform_parts = explode(' ', $platform);
2168 if ((count($platform_parts) >= 2) && in_array(strtolower($platform_parts[0]), array_values($platforms))) {
2169 $platform = $platform_parts[0];
2170 $serverdata['version'] = $platform_parts[1];
2172 if (in_array($platform, array_values($dfrn_platforms))) {
2173 $serverdata['network'] = Protocol::DFRN;
2174 } elseif (in_array($platform, array_values($ap_platforms))) {
2175 $serverdata['network'] = Protocol::ACTIVITYPUB;
2176 } elseif (in_array($platform, array_values($zap_platforms))) {
2177 $serverdata['network'] = Protocol::ZOT;
2179 if (in_array($platform, array_values($platforms))) {
2180 $serverdata['platform'] = $platform;
2186 $list = $xpath->query('//meta[@property]');
2188 foreach ($list as $node) {
2190 if ($node->attributes->length) {
2191 foreach ($node->attributes as $attribute) {
2192 $value = trim($attribute->value);
2193 if (empty($value)) {
2197 $attr[$attribute->name] = $value;
2200 if (empty($attr['property']) || empty($attr['content'])) {
2205 if ($attr['property'] == 'og:site_name') {
2206 $serverdata['site_name'] = $attr['content'];
2209 if ($attr['property'] == 'og:description') {
2210 $serverdata['info'] = $attr['content'];
2213 if (in_array($attr['property'], ['og:platform', 'generator'])) {
2214 if (in_array($attr['content'], array_keys($platforms))) {
2215 $serverdata['platform'] = $platforms[$attr['content']];
2219 if (in_array($attr['content'], array_keys($ap_platforms))) {
2220 $serverdata['network'] = Protocol::ACTIVITYPUB;
2221 } elseif (in_array($attr['content'], array_values($zap_platforms))) {
2222 $serverdata['network'] = Protocol::ZOT;
2227 $list = $xpath->query('//link[@rel="me"]');
2228 foreach ($list as $node) {
2229 foreach ($node->attributes as $attribute) {
2230 if (parse_url(trim($attribute->value), PHP_URL_HOST) == 'micro.blog') {
2231 $serverdata['version'] = trim($serverdata['platform'] . ' ' . $serverdata['version']);
2232 $serverdata['platform'] = 'microblog';
2233 $serverdata['network'] = Protocol::ACTIVITYPUB;
2239 if ($serverdata['platform'] != 'microblog') {
2240 $list = $xpath->query('//link[@rel="micropub"]');
2241 foreach ($list as $node) {
2242 foreach ($node->attributes as $attribute) {
2243 if (trim($attribute->value) == 'https://micro.blog/micropub') {
2244 $serverdata['version'] = trim($serverdata['platform'] . ' ' . $serverdata['version']);
2245 $serverdata['platform'] = 'microblog';
2246 $serverdata['network'] = Protocol::ACTIVITYPUB;
2253 if ($assigned && in_array($serverdata['detection-method'], [self::DETECT_MANUAL, self::DETECT_HEADER])) {
2254 $serverdata['detection-method'] = self::DETECT_BODY;
2261 * Analyses the header data of a given server for hints about type and system of that server
2263 * @param object $curlResult result of curl execution
2264 * @param array $serverdata array with server data
2266 * @return array server data
2268 private static function analyseRootHeader($curlResult, array $serverdata): array
2270 if ($curlResult->getHeader('server') == 'Mastodon') {
2271 $serverdata['platform'] = 'mastodon';
2272 $serverdata['network'] = Protocol::ACTIVITYPUB;
2273 } elseif ($curlResult->inHeader('x-diaspora-version')) {
2274 $serverdata['platform'] = 'diaspora';
2275 $serverdata['network'] = Protocol::DIASPORA;
2276 $serverdata['version'] = $curlResult->getHeader('x-diaspora-version')[0] ?? '';
2277 } elseif ($curlResult->inHeader('x-friendica-version')) {
2278 $serverdata['platform'] = 'friendica';
2279 $serverdata['network'] = Protocol::DFRN;
2280 $serverdata['version'] = $curlResult->getHeader('x-friendica-version')[0] ?? '';
2285 if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
2286 $serverdata['detection-method'] = self::DETECT_HEADER;
2293 * Update GServer entries
2295 public static function discover()
2297 // Update the server list
2298 self::discoverFederation();
2302 $requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
2304 if ($requery_days == 0) {
2308 $last_update = date('c', time() - (60 * 60 * 24 * $requery_days));
2310 $gservers = DBA::select('gserver', ['id', 'url', 'nurl', 'network', 'poco', 'directory-type'],
2311 ["NOT `blocked` AND NOT `failed` AND `directory-type` != ? AND `last_poco_query` < ?", GServer::DT_NONE, $last_update],
2312 ['order' => ['RAND()']]);
2314 while ($gserver = DBA::fetch($gservers)) {
2315 Logger::info('Update peer list', ['server' => $gserver['url'], 'id' => $gserver['id']]);
2316 Worker::add(Worker::PRIORITY_LOW, 'UpdateServerPeers', $gserver['url']);
2318 Logger::info('Update directory', ['server' => $gserver['url'], 'id' => $gserver['id']]);
2319 Worker::add(Worker::PRIORITY_LOW, 'UpdateServerDirectory', $gserver);
2321 $fields = ['last_poco_query' => DateTimeFormat::utcNow()];
2322 self::update($fields, ['nurl' => $gserver['nurl']]);
2324 if (--$no_of_queries == 0) {
2329 DBA::close($gservers);
2333 * Discover federated servers
2335 private static function discoverFederation()
2337 $last = DI::keyValue()->get('poco_last_federation_discovery');
2340 $next = $last + (24 * 60 * 60);
2342 if ($next > time()) {
2347 // Discover federated servers
2348 $protocols = ['activitypub', 'diaspora', 'dfrn', 'ostatus'];
2349 foreach ($protocols as $protocol) {
2350 $query = '{nodes(protocol:"' . $protocol . '"){host}}';
2351 $curlResult = DI::httpClient()->fetch('https://the-federation.info/graphql?query=' . urlencode($query), HttpClientAccept::JSON);
2352 if (!empty($curlResult)) {
2353 $data = json_decode($curlResult, true);
2354 if (!empty($data['data']['nodes'])) {
2355 foreach ($data['data']['nodes'] as $server) {
2356 // Using "only_nodeinfo" since servers that are listed on that page should always have it.
2357 self::add('https://' . $server['host'], true);
2363 // Disvover Mastodon servers
2364 $accesstoken = DI::config()->get('system', 'instances_social_key');
2366 if (!empty($accesstoken)) {
2367 $api = 'https://instances.social/api/1.0/instances/list?count=0';
2368 $curlResult = DI::httpClient()->get($api, HttpClientAccept::JSON, [HttpClientOptions::HEADERS => ['Authorization' => ['Bearer ' . $accesstoken]]]);
2369 if ($curlResult->isSuccess()) {
2370 $servers = json_decode($curlResult->getBody(), true);
2372 if (!empty($servers['instances'])) {
2373 foreach ($servers['instances'] as $server) {
2374 $url = (is_null($server['https_score']) ? 'http' : 'https') . '://' . $server['name'];
2381 DI::keyValue()->set('poco_last_federation_discovery', time());
2385 * Set the protocol for the given server
2387 * @param int $gsid Server id
2388 * @param int $protocol Protocol id
2392 public static function setProtocol(int $gsid, int $protocol)
2398 $gserver = DBA::selectFirst('gserver', ['protocol', 'url'], ['id' => $gsid]);
2399 if (!DBA::isResult($gserver)) {
2403 $old = $gserver['protocol'];
2405 if (!is_null($old)) {
2407 The priority for the protocols is:
2409 2. DFRN via Diaspora
2415 // We don't need to change it when nothing is to be changed
2416 if ($old == $protocol) {
2420 // We don't want to mark a server as OStatus when it had been marked with any other protocol before
2421 if ($protocol == Post\DeliveryData::OSTATUS) {
2425 // If the server is marked as ActivityPub then we won't change it to anything different
2426 if ($old == Post\DeliveryData::ACTIVITYPUB) {
2430 // Don't change it to anything lower than DFRN if the new one wasn't ActivityPub
2431 if (($old == Post\DeliveryData::DFRN) && ($protocol != Post\DeliveryData::ACTIVITYPUB)) {
2435 // Don't change it to Diaspora when it is a legacy DFRN server
2436 if (($old == Post\DeliveryData::LEGACY_DFRN) && ($protocol == Post\DeliveryData::DIASPORA)) {
2441 Logger::info('Protocol for server', ['protocol' => $protocol, 'old' => $old, 'id' => $gsid, 'url' => $gserver['url'], 'callstack' => System::callstack(20)]);
2442 self::update(['protocol' => $protocol], ['id' => $gsid]);
2446 * Fetch the protocol of the given server
2448 * @param int $gsid Server id
2450 * @return ?int One of Post\DeliveryData protocol constants or null if unknown or gserver is missing
2454 public static function getProtocol(int $gsid): ?int
2460 $gserver = DBA::selectFirst('gserver', ['protocol'], ['id' => $gsid]);
2461 if (DBA::isResult($gserver)) {
2462 return $gserver['protocol'];
2469 * Update rows in the gserver table.
2470 * Enforces gserver table field maximum sizes to avoid "Data too long" database errors
2472 * @param array $fields
2473 * @param array $condition
2479 public static function update(array $fields, array $condition): bool
2481 $fields = DI::dbaDefinition()->truncateFieldsForTable('gserver', $fields);
2483 return DBA::update('gserver', $fields, $condition);
2487 * Insert a row into the gserver table.
2488 * Enforces gserver table field maximum sizes to avoid "Data too long" database errors
2490 * @param array $fields
2491 * @param int $duplicate_mode What to do on a duplicated entry
2497 public static function insert(array $fields, int $duplicate_mode = Database::INSERT_DEFAULT): bool
2499 $fields = DI::dbaDefinition()->truncateFieldsForTable('gserver', $fields);
2501 return DBA::insert('gserver', $fields, $duplicate_mode);