3 * @copyright Copyright (C) 2020, Friendica
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;
26 use Friendica\Core\Protocol;
27 use Friendica\Core\Worker;
28 use Friendica\Database\DBA;
30 use Friendica\Module\Register;
31 use Friendica\Network\CurlResult;
32 use Friendica\Util\Network;
33 use Friendica\Util\DateTimeFormat;
34 use Friendica\Util\Strings;
35 use Friendica\Util\XML;
36 use Friendica\Core\Logger;
37 use Friendica\Core\System;
38 use Friendica\Protocol\PortableContact;
39 use Friendica\Protocol\Diaspora;
42 * This class handles GServer related functions
49 const DT_MASTODON = 2;
51 // Methods to detect server types
53 // Non endpoint specific methods
54 const DETECT_MANUAL = 0;
55 const DETECT_HEADER = 1;
56 const DETECT_BODY = 2;
58 // Implementation specific endpoints
59 const DETECT_FRIENDIKA = 10;
60 const DETECT_FRIENDICA = 11;
61 const DETECT_STATUSNET = 12;
62 const DETECT_GNUSOCIAL = 13;
63 const DETECT_CONFIG_JSON = 14; // Statusnet, GNU Social, Older Hubzilla/Redmatrix
64 const DETECT_SITEINFO_JSON = 15; // Newer Hubzilla
65 const DETECT_MASTODON_API = 16;
66 const DETECT_STATUS_PHP = 17; // Nextcloud
68 // Standardized endpoints
69 const DETECT_STATISTICS_JSON = 100;
70 const DETECT_NODEINFO_1 = 101;
71 const DETECT_NODEINFO_2 = 102;
74 * Get the ID for the given server URL
77 * @param boolean $no_check Don't check if the server hadn't been found
78 * @return int gserver id
80 public static function getID(string $url, bool $no_check = false)
86 $url = self::cleanURL($url);
88 $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => Strings::normaliseLink($url)]);
89 if (DBA::isResult($gserver)) {
90 Logger::info('Got ID for URL', ['id' => $gserver['id'], 'url' => $url, 'callstack' => System::callstack(20)]);
91 return $gserver['id'];
94 if ($no_check || !self::check($url)) {
98 return self::getID($url, true);
102 * Checks if the given server is reachable
104 * @param string $profile URL of the given profile
105 * @param string $server URL of the given server (If empty, taken from profile)
106 * @param string $network Network value that is used, when detection failed
107 * @param boolean $force Force an update.
109 * @return boolean 'true' if server seems vital
111 public static function reachable(string $profile, string $server = '', string $network = '', bool $force = false)
114 $server = GContact::getBasepath($profile);
121 return self::check($server, $network, $force);
125 * Decides if a server needs to be updated, based upon several date fields
127 * @param date $created Creation date of that server entry
128 * @param date $updated When had the server entry be updated
129 * @param date $last_failure Last failure when contacting that server
130 * @param date $last_contact Last time the server had been contacted
132 * @return boolean Does the server record needs an update?
134 public static function updateNeeded($created, $updated, $last_failure, $last_contact)
136 $now = strtotime(DateTimeFormat::utcNow());
138 if ($updated > $last_contact) {
139 $contact_time = strtotime($updated);
141 $contact_time = strtotime($last_contact);
144 $failure_time = strtotime($last_failure);
145 $created_time = strtotime($created);
147 // If there is no "created" time then use the current time
148 if ($created_time <= 0) {
149 $created_time = $now;
152 // If the last contact was less than 24 hours then don't update
153 if (($now - $contact_time) < (60 * 60 * 24)) {
157 // If the last failure was less than 24 hours then don't update
158 if (($now - $failure_time) < (60 * 60 * 24)) {
162 // If the last contact was less than a week ago and the last failure is older than a week then don't update
163 //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) && ($contact_time > $failure_time))
166 // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
167 if ((($now - $contact_time) > (60 * 60 * 24 * 7)) && (($now - $created_time) > (60 * 60 * 24 * 7)) && (($now - $failure_time) < (60 * 60 * 24 * 7))) {
171 // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
172 if ((($now - $contact_time) > (60 * 60 * 24 * 30)) && (($now - $created_time) > (60 * 60 * 24 * 30)) && (($now - $failure_time) < (60 * 60 * 24 * 30))) {
180 * Checks the state of the given server.
182 * @param string $server_url URL of the given server
183 * @param string $network Network value that is used, when detection failed
184 * @param boolean $force Force an update.
185 * @param boolean $only_nodeinfo Only use nodeinfo for server detection
187 * @return boolean 'true' if server seems vital
189 public static function check(string $server_url, string $network = '', bool $force = false, bool $only_nodeinfo = false)
191 $server_url = self::cleanURL($server_url);
193 if ($server_url == '') {
197 $gserver = DBA::selectFirst('gserver', [], ['nurl' => Strings::normaliseLink($server_url)]);
198 if (DBA::isResult($gserver)) {
199 if ($gserver['created'] <= DBA::NULL_DATETIME) {
200 $fields = ['created' => DateTimeFormat::utcNow()];
201 $condition = ['nurl' => Strings::normaliseLink($server_url)];
202 DBA::update('gserver', $fields, $condition);
205 $last_contact = $gserver['last_contact'];
206 $last_failure = $gserver['last_failure'];
208 // See discussion under https://forum.friendi.ca/display/0b6b25a8135aabc37a5a0f5684081633
209 // It can happen that a zero date is in the database, but storing it again is forbidden.
210 if ($last_contact < DBA::NULL_DATETIME) {
211 $last_contact = DBA::NULL_DATETIME;
214 if ($last_failure < DBA::NULL_DATETIME) {
215 $last_failure = DBA::NULL_DATETIME;
218 if (!$force && !self::updateNeeded($gserver['created'], '', $last_failure, $last_contact)) {
219 Logger::info('No update needed', ['server' => $server_url]);
220 return ($last_contact >= $last_failure);
222 Logger::info('Server is outdated. Start discovery.', ['Server' => $server_url, 'Force' => $force, 'Created' => $gserver['created'], 'Failure' => $last_failure, 'Contact' => $last_contact]);
224 Logger::info('Server is unknown. Start discovery.', ['Server' => $server_url]);
227 return self::detect($server_url, $network, $only_nodeinfo);
231 * Set failed server status
235 private static function setFailure(string $url)
237 if (DBA::exists('gserver', ['nurl' => Strings::normaliseLink($url)])) {
238 DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow(), 'detection-method' => null],
239 ['nurl' => Strings::normaliseLink($url)]);
240 Logger::info('Set failed status for existing server', ['url' => $url]);
243 DBA::insert('gserver', ['url' => $url, 'nurl' => Strings::normaliseLink($url),
244 'network' => Protocol::PHANTOM, 'created' => DateTimeFormat::utcNow(),
245 'last_failure' => DateTimeFormat::utcNow()]);
246 Logger::info('Set failed status for new server', ['url' => $url]);
250 * Remove unwanted content from the given URL
253 * @return string cleaned URL
255 public static function cleanURL(string $url)
257 $url = trim($url, '/');
258 $url = str_replace('/index.php', '', $url);
260 $urlparts = parse_url($url);
261 unset($urlparts['user']);
262 unset($urlparts['pass']);
263 unset($urlparts['query']);
264 unset($urlparts['fragment']);
265 return Network::unparseURL($urlparts);
269 * Return the base URL
272 * @return string base URL
274 private static function getBaseURL(string $url)
276 $urlparts = parse_url(self::cleanURL($url));
277 unset($urlparts['path']);
278 return Network::unparseURL($urlparts);
282 * Detect server data (type, protocol, version number, ...)
283 * The detected data is then updated or inserted in the gserver table.
285 * @param string $url URL of the given server
286 * @param string $network Network value that is used, when detection failed
287 * @param boolean $only_nodeinfo Only use nodeinfo for server detection
289 * @return boolean 'true' if server could be detected
291 public static function detect(string $url, string $network = '', bool $only_nodeinfo = false)
293 Logger::info('Detect server type', ['server' => $url]);
294 $serverdata = ['detection-method' => self::DETECT_MANUAL];
296 $original_url = $url;
298 // Remove URL content that is not supposed to exist for a server url
299 $url = self::cleanURL($url);
302 $baseurl = self::getBaseURL($url);
304 // If the URL missmatches, then we mark the old entry as failure
305 if ($url != $original_url) {
306 DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($original_url)]);
309 // When a nodeinfo is present, we don't need to dig further
310 $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
311 $curlResult = Network::curl($url . '/.well-known/nodeinfo', false, ['timeout' => $xrd_timeout]);
312 if ($curlResult->isTimeout()) {
313 self::setFailure($url);
317 $nodeinfo = self::fetchNodeinfo($url, $curlResult);
318 if ($only_nodeinfo && empty($nodeinfo)) {
319 Logger::info('Invalid nodeinfo in nodeinfo-mode, server is marked as failure', ['url' => $url]);
320 self::setFailure($url);
324 // When nodeinfo isn't present, we use the older 'statistics.json' endpoint
325 if (empty($nodeinfo)) {
326 $nodeinfo = self::fetchStatistics($url);
329 // If that didn't work out well, we use some protocol specific endpoints
330 // For Friendica and Zot based networks we have to dive deeper to reveal more details
331 if (empty($nodeinfo['network']) || in_array($nodeinfo['network'], [Protocol::DFRN, Protocol::ZOT])) {
332 if (!empty($nodeinfo['detection-method'])) {
333 $serverdata['detection-method'] = $nodeinfo['detection-method'];
336 // Fetch the landing page, possibly it reveals some data
337 if (empty($nodeinfo['network'])) {
338 if ($baseurl == $url) {
339 $basedata = $serverdata;
341 $basedata = ['detection-method' => self::DETECT_MANUAL];
344 $curlResult = Network::curl($baseurl, false, ['timeout' => $xrd_timeout]);
345 if ($curlResult->isSuccess()) {
346 $basedata = self::analyseRootHeader($curlResult, $basedata);
347 $basedata = self::analyseRootBody($curlResult, $basedata, $baseurl);
350 if (!$curlResult->isSuccess() || empty($curlResult->getBody()) || self::invalidBody($curlResult->getBody())) {
351 self::setFailure($url);
355 if ($baseurl == $url) {
356 $serverdata = $basedata;
358 // When the base path doesn't seem to contain a social network we try the complete path.
359 // Most detectable system have to be installed in the root directory.
360 // We checked the base to avoid false positives.
361 $curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout]);
362 if ($curlResult->isSuccess()) {
363 $urldata = self::analyseRootHeader($curlResult, $serverdata);
364 $urldata = self::analyseRootBody($curlResult, $urldata, $url);
366 $comparebase = $basedata;
367 unset($comparebase['info']);
368 unset($comparebase['site_name']);
369 $compareurl = $urldata;
370 unset($compareurl['info']);
371 unset($compareurl['site_name']);
373 // We assume that no one will install the identical system in the root and a subfolder
374 if (!empty(array_diff($comparebase, $compareurl))) {
375 $serverdata = $urldata;
381 if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ACTIVITYPUB)) {
382 $serverdata = self::detectMastodonAlikes($url, $serverdata);
385 // All following checks are done for systems that always have got a "host-meta" endpoint.
386 // With this check we don't have to waste time and ressources for dead systems.
387 // Also this hopefully prevents us from receiving abuse messages.
388 if (empty($serverdata['network']) && !self::validHostMeta($url)) {
389 self::setFailure($url);
393 if (empty($serverdata['network']) || in_array($serverdata['network'], [Protocol::DFRN, Protocol::ACTIVITYPUB])) {
394 $serverdata = self::detectFriendica($url, $serverdata);
397 // the 'siteinfo.json' is some specific endpoint of Hubzilla and Red
398 if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ZOT)) {
399 $serverdata = self::fetchSiteinfo($url, $serverdata);
402 // The 'siteinfo.json' doesn't seem to be present on older Hubzilla installations
403 if (empty($serverdata['network'])) {
404 $serverdata = self::detectHubzilla($url, $serverdata);
407 if (empty($serverdata['network'])) {
408 $serverdata = self::detectNextcloud($url, $serverdata);
411 if (empty($serverdata['network'])) {
412 $serverdata = self::detectGNUSocial($url, $serverdata);
415 $serverdata = array_merge($nodeinfo, $serverdata);
417 $serverdata = $nodeinfo;
420 // Detect the directory type
421 $serverdata['directory-type'] = self::DT_NONE;
422 $serverdata = self::checkPoCo($url, $serverdata);
423 $serverdata = self::checkMastodonDirectory($url, $serverdata);
425 // We can't detect the network type. Possibly it is some system that we don't know yet
426 if (empty($serverdata['network'])) {
427 $serverdata['network'] = Protocol::PHANTOM;
430 // When we hadn't been able to detect the network type, we use the hint from the parameter
431 if (($serverdata['network'] == Protocol::PHANTOM) && !empty($network)) {
432 $serverdata['network'] = $network;
435 $serverdata['url'] = $url;
436 $serverdata['nurl'] = Strings::normaliseLink($url);
438 // We take the highest number that we do find
439 $registeredUsers = $serverdata['registered-users'] ?? 0;
441 // On an active server there has to be at least a single user
442 if (($serverdata['network'] != Protocol::PHANTOM) && ($registeredUsers == 0)) {
443 $registeredUsers = 1;
446 if ($serverdata['network'] == Protocol::PHANTOM) {
447 $serverdata['registered-users'] = $registeredUsers;
448 $serverdata = self::detectNetworkViaContacts($url, $serverdata);
451 $serverdata['last_contact'] = DateTimeFormat::utcNow();
453 $gserver = DBA::selectFirst('gserver', ['network'], ['nurl' => Strings::normaliseLink($url)]);
454 if (!DBA::isResult($gserver)) {
455 $serverdata['created'] = DateTimeFormat::utcNow();
456 $ret = DBA::insert('gserver', $serverdata);
457 $id = DBA::lastInsertId();
459 // Don't override the network with 'unknown' when there had been a valid entry before
460 if (($serverdata['network'] == Protocol::PHANTOM) && !empty($gserver['network'])) {
461 unset($serverdata['network']);
464 $ret = DBA::update('gserver', $serverdata, ['nurl' => $serverdata['nurl']]);
465 $gserver = DBA::selectFirst('gserver', ['id'], ['nurl' => $serverdata['nurl']]);
466 if (DBA::isResult($gserver)) {
467 $id = $gserver['id'];
471 if (!empty($serverdata['network']) && !empty($id) && ($serverdata['network'] != Protocol::PHANTOM)) {
472 $gcontacts = DBA::count('gcontact', ['gsid' => $id]);
473 $apcontacts = DBA::count('apcontact', ['gsid' => $id]);
474 $contacts = DBA::count('contact', ['uid' => 0, 'gsid' => $id]);
475 $max_users = max($gcontacts, $apcontacts, $contacts, $registeredUsers);
476 if ($max_users > $registeredUsers) {
477 Logger::info('Update registered users', ['id' => $id, 'url' => $serverdata['nurl'], 'registered-users' => $max_users]);
478 DBA::update('gserver', ['registered-users' => $max_users], ['id' => $id]);
482 if (!empty($serverdata['network']) && in_array($serverdata['network'], [Protocol::DFRN, Protocol::DIASPORA])) {
483 self::discoverRelay($url);
490 * Fetch relay data from a given server url
492 * @param string $server_url address of the server
493 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
495 private static function discoverRelay(string $server_url)
497 Logger::info('Discover relay data', ['server' => $server_url]);
499 $curlResult = Network::curl($server_url . '/.well-known/x-social-relay');
500 if (!$curlResult->isSuccess()) {
504 $data = json_decode($curlResult->getBody(), true);
505 if (!is_array($data)) {
509 // Sanitize incoming data, see https://github.com/friendica/friendica/issues/8565
510 $data['subscribe'] = (bool)$data['subscribe'] ?? false;
512 if (!$data['subscribe'] || empty($data['scope']) || !in_array(strtolower($data['scope']), ['all', 'tags'])) {
514 $data['subscribe'] = false;
518 $gserver = DBA::selectFirst('gserver', ['id', 'relay-subscribe', 'relay-scope'], ['nurl' => Strings::normaliseLink($server_url)]);
519 if (!DBA::isResult($gserver)) {
523 if (($gserver['relay-subscribe'] != $data['subscribe']) || ($gserver['relay-scope'] != $data['scope'])) {
524 $fields = ['relay-subscribe' => $data['subscribe'], 'relay-scope' => $data['scope']];
525 DBA::update('gserver', $fields, ['id' => $gserver['id']]);
528 DBA::delete('gserver-tag', ['gserver-id' => $gserver['id']]);
530 if ($data['scope'] == 'tags') {
533 foreach ($data['tags'] as $tag) {
534 $tag = mb_strtolower($tag);
535 if (strlen($tag) < 100) {
540 foreach ($tags as $tag) {
541 DBA::insert('gserver-tag', ['gserver-id' => $gserver['id'], 'tag' => $tag], true);
545 // Create or update the relay contact
547 if (isset($data['protocols'])) {
548 if (isset($data['protocols']['diaspora'])) {
549 $fields['network'] = Protocol::DIASPORA;
551 if (isset($data['protocols']['diaspora']['receive'])) {
552 $fields['batch'] = $data['protocols']['diaspora']['receive'];
553 } elseif (is_string($data['protocols']['diaspora'])) {
554 $fields['batch'] = $data['protocols']['diaspora'];
558 if (isset($data['protocols']['dfrn'])) {
559 $fields['network'] = Protocol::DFRN;
561 if (isset($data['protocols']['dfrn']['receive'])) {
562 $fields['batch'] = $data['protocols']['dfrn']['receive'];
563 } elseif (is_string($data['protocols']['dfrn'])) {
564 $fields['batch'] = $data['protocols']['dfrn'];
568 Diaspora::setRelayContact($server_url, $fields);
572 * Fetch server data from '/statistics.json' on the given server
574 * @param string $url URL of the given server
576 * @return array server data
578 private static function fetchStatistics(string $url)
580 $curlResult = Network::curl($url . '/statistics.json');
581 if (!$curlResult->isSuccess()) {
585 $data = json_decode($curlResult->getBody(), true);
590 $serverdata = ['detection-method' => self::DETECT_STATISTICS_JSON];
592 if (!empty($data['version'])) {
593 $serverdata['version'] = $data['version'];
594 // Version numbers on statistics.json are presented with additional info, e.g.:
595 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
596 $serverdata['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $serverdata['version']);
599 if (!empty($data['name'])) {
600 $serverdata['site_name'] = $data['name'];
603 if (!empty($data['network'])) {
604 $serverdata['platform'] = strtolower($data['network']);
606 if ($serverdata['platform'] == 'diaspora') {
607 $serverdata['network'] = Protocol::DIASPORA;
608 } elseif ($serverdata['platform'] == 'friendica') {
609 $serverdata['network'] = Protocol::DFRN;
610 } elseif ($serverdata['platform'] == 'hubzilla') {
611 $serverdata['network'] = Protocol::ZOT;
612 } elseif ($serverdata['platform'] == 'redmatrix') {
613 $serverdata['network'] = Protocol::ZOT;
618 if (!empty($data['registrations_open'])) {
619 $serverdata['register_policy'] = Register::OPEN;
621 $serverdata['register_policy'] = Register::CLOSED;
628 * Detect server type by using the nodeinfo data
630 * @param string $url address of the server
631 * @param CurlResult $curlResult
632 * @return array Server data
633 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
635 private static function fetchNodeinfo(string $url, CurlResult $curlResult)
637 if (!$curlResult->isSuccess()) {
641 $nodeinfo = json_decode($curlResult->getBody(), true);
643 if (!is_array($nodeinfo) || empty($nodeinfo['links'])) {
650 foreach ($nodeinfo['links'] as $link) {
651 if (!is_array($link) || empty($link['rel']) || empty($link['href'])) {
652 Logger::info('Invalid nodeinfo format', ['url' => $url]);
655 if ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/1.0') {
656 $nodeinfo1_url = $link['href'];
657 } elseif ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/2.0') {
658 $nodeinfo2_url = $link['href'];
662 if ($nodeinfo1_url . $nodeinfo2_url == '') {
668 // When the nodeinfo url isn't on the same host, then there is obviously something wrong
669 if (!empty($nodeinfo2_url) && (parse_url($url, PHP_URL_HOST) == parse_url($nodeinfo2_url, PHP_URL_HOST))) {
670 $server = self::parseNodeinfo2($nodeinfo2_url);
673 // When the nodeinfo url isn't on the same host, then there is obviously something wrong
674 if (empty($server) && !empty($nodeinfo1_url) && (parse_url($url, PHP_URL_HOST) == parse_url($nodeinfo1_url, PHP_URL_HOST))) {
675 $server = self::parseNodeinfo1($nodeinfo1_url);
684 * @param string $nodeinfo_url address of the nodeinfo path
685 * @return array Server data
686 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
688 private static function parseNodeinfo1(string $nodeinfo_url)
690 $curlResult = Network::curl($nodeinfo_url);
691 if (!$curlResult->isSuccess()) {
695 $nodeinfo = json_decode($curlResult->getBody(), true);
697 if (!is_array($nodeinfo)) {
701 $server = ['detection-method' => self::DETECT_NODEINFO_1,
702 'register_policy' => Register::CLOSED];
704 if (!empty($nodeinfo['openRegistrations'])) {
705 $server['register_policy'] = Register::OPEN;
708 if (is_array($nodeinfo['software'])) {
709 if (!empty($nodeinfo['software']['name'])) {
710 $server['platform'] = strtolower($nodeinfo['software']['name']);
713 if (!empty($nodeinfo['software']['version'])) {
714 $server['version'] = $nodeinfo['software']['version'];
715 // Version numbers on Nodeinfo are presented with additional info, e.g.:
716 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
717 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
721 if (!empty($nodeinfo['metadata']['nodeName'])) {
722 $server['site_name'] = $nodeinfo['metadata']['nodeName'];
725 if (!empty($nodeinfo['usage']['users']['total'])) {
726 $server['registered-users'] = $nodeinfo['usage']['users']['total'];
729 if (!empty($nodeinfo['protocols']['inbound']) && is_array($nodeinfo['protocols']['inbound'])) {
731 foreach ($nodeinfo['protocols']['inbound'] as $protocol) {
732 $protocols[$protocol] = true;
735 if (!empty($protocols['friendica'])) {
736 $server['network'] = Protocol::DFRN;
737 } elseif (!empty($protocols['activitypub'])) {
738 $server['network'] = Protocol::ACTIVITYPUB;
739 } elseif (!empty($protocols['diaspora'])) {
740 $server['network'] = Protocol::DIASPORA;
741 } elseif (!empty($protocols['ostatus'])) {
742 $server['network'] = Protocol::OSTATUS;
743 } elseif (!empty($protocols['gnusocial'])) {
744 $server['network'] = Protocol::OSTATUS;
745 } elseif (!empty($protocols['zot'])) {
746 $server['network'] = Protocol::ZOT;
750 if (empty($server)) {
760 * @param string $nodeinfo_url address of the nodeinfo path
761 * @return array Server data
762 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
764 private static function parseNodeinfo2(string $nodeinfo_url)
766 $curlResult = Network::curl($nodeinfo_url);
767 if (!$curlResult->isSuccess()) {
771 $nodeinfo = json_decode($curlResult->getBody(), true);
773 if (!is_array($nodeinfo)) {
777 $server = ['detection-method' => self::DETECT_NODEINFO_2,
778 'register_policy' => Register::CLOSED];
780 if (!empty($nodeinfo['openRegistrations'])) {
781 $server['register_policy'] = Register::OPEN;
784 if (is_array($nodeinfo['software'])) {
785 if (!empty($nodeinfo['software']['name'])) {
786 $server['platform'] = strtolower($nodeinfo['software']['name']);
789 if (!empty($nodeinfo['software']['version'])) {
790 $server['version'] = $nodeinfo['software']['version'];
791 // Version numbers on Nodeinfo are presented with additional info, e.g.:
792 // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
793 $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
797 if (!empty($nodeinfo['metadata']['nodeName'])) {
798 $server['site_name'] = $nodeinfo['metadata']['nodeName'];
801 if (!empty($nodeinfo['usage']['users']['total'])) {
802 $server['registered-users'] = $nodeinfo['usage']['users']['total'];
805 if (!empty($nodeinfo['protocols'])) {
807 foreach ($nodeinfo['protocols'] as $protocol) {
808 $protocols[$protocol] = true;
811 if (!empty($protocols['dfrn'])) {
812 $server['network'] = Protocol::DFRN;
813 } elseif (!empty($protocols['activitypub'])) {
814 $server['network'] = Protocol::ACTIVITYPUB;
815 } elseif (!empty($protocols['diaspora'])) {
816 $server['network'] = Protocol::DIASPORA;
817 } elseif (!empty($protocols['ostatus'])) {
818 $server['network'] = Protocol::OSTATUS;
819 } elseif (!empty($protocols['gnusocial'])) {
820 $server['network'] = Protocol::OSTATUS;
821 } elseif (!empty($protocols['zot'])) {
822 $server['network'] = Protocol::ZOT;
826 if (empty($server)) {
834 * Fetch server information from a 'siteinfo.json' file on the given server
836 * @param string $url URL of the given server
837 * @param array $serverdata array with server data
839 * @return array server data
841 private static function fetchSiteinfo(string $url, array $serverdata)
843 $curlResult = Network::curl($url . '/siteinfo.json');
844 if (!$curlResult->isSuccess()) {
848 $data = json_decode($curlResult->getBody(), true);
853 if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
854 $serverdata['detection-method'] = self::DETECT_SITEINFO_JSON;
857 if (!empty($data['url'])) {
858 $serverdata['platform'] = strtolower($data['platform']);
859 $serverdata['version'] = $data['version'];
862 if (!empty($data['plugins'])) {
863 if (in_array('pubcrawl', $data['plugins'])) {
864 $serverdata['network'] = Protocol::ACTIVITYPUB;
865 } elseif (in_array('diaspora', $data['plugins'])) {
866 $serverdata['network'] = Protocol::DIASPORA;
867 } elseif (in_array('gnusoc', $data['plugins'])) {
868 $serverdata['network'] = Protocol::OSTATUS;
870 $serverdata['network'] = Protocol::ZOT;
874 if (!empty($data['site_name'])) {
875 $serverdata['site_name'] = $data['site_name'];
878 if (!empty($data['channels_total'])) {
879 $serverdata['registered-users'] = $data['channels_total'];
882 if (!empty($data['register_policy'])) {
883 switch ($data['register_policy']) {
884 case 'REGISTER_OPEN':
885 $serverdata['register_policy'] = Register::OPEN;
888 case 'REGISTER_APPROVE':
889 $serverdata['register_policy'] = Register::APPROVE;
892 case 'REGISTER_CLOSED':
894 $serverdata['register_policy'] = Register::CLOSED;
903 * Checks if the server contains a valid host meta file
905 * @param string $url URL of the given server
907 * @return boolean 'true' if the server seems to be vital
909 private static function validHostMeta(string $url)
911 $xrd_timeout = DI::config()->get('system', 'xrd_timeout');
912 $curlResult = Network::curl($url . '/.well-known/host-meta', false, ['timeout' => $xrd_timeout]);
913 if (!$curlResult->isSuccess()) {
917 $xrd = XML::parseString($curlResult->getBody());
918 if (!is_object($xrd)) {
922 $elements = XML::elementToArray($xrd);
923 if (empty($elements) || empty($elements['xrd']) || empty($elements['xrd']['link'])) {
928 foreach ($elements['xrd']['link'] as $link) {
929 // When there is more than a single "link" element, the array looks slightly different
930 if (!empty($link['@attributes'])) {
931 $link = $link['@attributes'];
934 if (empty($link['rel']) || empty($link['template'])) {
938 if ($link['rel'] == 'lrdd') {
939 // When the webfinger host is the same like the system host, it should be ok.
940 $valid = (parse_url($url, PHP_URL_HOST) == parse_url($link['template'], PHP_URL_HOST));
948 * Detect the network of the given server via their known contacts
950 * @param string $url URL of the given server
951 * @param array $serverdata array with server data
953 * @return array server data
955 private static function detectNetworkViaContacts(string $url, array $serverdata)
959 $gcontacts = DBA::select('gcontact', ['url', 'nurl'], ['server_url' => [$url, $serverdata['nurl']]]);
960 while ($gcontact = DBA::fetch($gcontacts)) {
961 $contacts[$gcontact['nurl']] = $gcontact['url'];
963 DBA::close($gcontacts);
965 $apcontacts = DBA::select('apcontact', ['url'], ['baseurl' => [$url, $serverdata['nurl']]]);
966 while ($apcontact = DBA::fetch($apcontacts)) {
967 $contacts[Strings::normaliseLink($apcontact['url'])] = $apcontact['url'];
969 DBA::close($apcontacts);
971 $pcontacts = DBA::select('contact', ['url', 'nurl'], ['uid' => 0, 'baseurl' => [$url, $serverdata['nurl']]]);
972 while ($pcontact = DBA::fetch($pcontacts)) {
973 $contacts[$pcontact['nurl']] = $pcontact['url'];
975 DBA::close($pcontacts);
977 if (empty($contacts)) {
981 foreach ($contacts as $contact) {
982 $probed = Contact::getByURL($contact);
983 if (!empty($probed) && in_array($probed['network'], Protocol::FEDERATED)) {
984 $serverdata['network'] = $probed['network'];
989 $serverdata['registered-users'] = max($serverdata['registered-users'], count($contacts));
995 * Checks if the given server does have a '/poco' endpoint.
996 * This is used for the 'PortableContact' functionality,
997 * which is used by both Friendica and Hubzilla.
999 * @param string $url URL of the given server
1000 * @param array $serverdata array with server data
1002 * @return array server data
1004 private static function checkPoCo(string $url, array $serverdata)
1006 $serverdata['poco'] = '';
1008 $curlResult = Network::curl($url. '/poco');
1009 if (!$curlResult->isSuccess()) {
1013 $data = json_decode($curlResult->getBody(), true);
1018 if (!empty($data['totalResults'])) {
1019 $registeredUsers = $serverdata['registered-users'] ?? 0;
1020 $serverdata['registered-users'] = max($data['totalResults'], $registeredUsers);
1021 $serverdata['directory-type'] = self::DT_POCO;
1022 $serverdata['poco'] = $url . '/poco';
1029 * Checks if the given server does have a Mastodon style directory endpoint.
1031 * @param string $url URL of the given server
1032 * @param array $serverdata array with server data
1034 * @return array server data
1036 public static function checkMastodonDirectory(string $url, array $serverdata)
1038 $curlResult = Network::curl($url . '/api/v1/directory?limit=1');
1039 if (!$curlResult->isSuccess()) {
1043 $data = json_decode($curlResult->getBody(), true);
1048 if (count($data) == 1) {
1049 $serverdata['directory-type'] = self::DT_MASTODON;
1056 * Detects the version number of a given server when it was a NextCloud installation
1058 * @param string $url URL of the given server
1059 * @param array $serverdata array with server data
1061 * @return array server data
1063 private static function detectNextcloud(string $url, array $serverdata)
1065 $curlResult = Network::curl($url . '/status.php');
1066 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1070 $data = json_decode($curlResult->getBody(), true);
1075 if (!empty($data['version'])) {
1076 $serverdata['platform'] = 'nextcloud';
1077 $serverdata['version'] = $data['version'];
1078 $serverdata['network'] = Protocol::ACTIVITYPUB;
1080 if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
1081 $serverdata['detection-method'] = self::DETECT_STATUS_PHP;
1089 * Detects data from a given server url if it was a mastodon alike system
1091 * @param string $url URL of the given server
1092 * @param array $serverdata array with server data
1094 * @return array server data
1096 private static function detectMastodonAlikes(string $url, array $serverdata)
1098 $curlResult = Network::curl($url . '/api/v1/instance');
1099 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1103 $data = json_decode($curlResult->getBody(), true);
1108 if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
1109 $serverdata['detection-method'] = self::DETECT_MASTODON_API;
1112 if (!empty($data['version'])) {
1113 $serverdata['platform'] = 'mastodon';
1114 $serverdata['version'] = $data['version'] ?? '';
1115 $serverdata['network'] = Protocol::ACTIVITYPUB;
1118 if (!empty($data['title'])) {
1119 $serverdata['site_name'] = $data['title'];
1122 if (!empty($data['title']) && empty($serverdata['platform']) && empty($serverdata['network'])) {
1123 $serverdata['platform'] = 'mastodon';
1124 $serverdata['network'] = Protocol::ACTIVITYPUB;
1127 if (!empty($data['description'])) {
1128 $serverdata['info'] = trim($data['description']);
1131 if (!empty($data['stats']['user_count'])) {
1132 $serverdata['registered-users'] = $data['stats']['user_count'];
1135 if (!empty($serverdata['version']) && preg_match('/.*?\(compatible;\s(.*)\s(.*)\)/ism', $serverdata['version'], $matches)) {
1136 $serverdata['platform'] = strtolower($matches[1]);
1137 $serverdata['version'] = $matches[2];
1140 if (!empty($serverdata['version']) && strstr(strtolower($serverdata['version']), 'pleroma')) {
1141 $serverdata['platform'] = 'pleroma';
1142 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['version']));
1145 if (!empty($serverdata['platform']) && strstr($serverdata['platform'], 'pleroma')) {
1146 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['platform']));
1147 $serverdata['platform'] = 'pleroma';
1154 * Detects data from typical Hubzilla endpoints
1156 * @param string $url URL of the given server
1157 * @param array $serverdata array with server data
1159 * @return array server data
1161 private static function detectHubzilla(string $url, array $serverdata)
1163 $curlResult = Network::curl($url . '/api/statusnet/config.json');
1164 if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
1168 $data = json_decode($curlResult->getBody(), true);
1169 if (empty($data) || empty($data['site'])) {
1173 if (!empty($data['site']['name'])) {
1174 $serverdata['site_name'] = $data['site']['name'];
1177 if (!empty($data['site']['platform'])) {
1178 $serverdata['platform'] = strtolower($data['site']['platform']['PLATFORM_NAME']);
1179 $serverdata['version'] = $data['site']['platform']['STD_VERSION'];
1180 $serverdata['network'] = Protocol::ZOT;
1183 if (!empty($data['site']['hubzilla'])) {
1184 $serverdata['platform'] = strtolower($data['site']['hubzilla']['PLATFORM_NAME']);
1185 $serverdata['version'] = $data['site']['hubzilla']['RED_VERSION'];
1186 $serverdata['network'] = Protocol::ZOT;
1189 if (!empty($data['site']['redmatrix'])) {
1190 if (!empty($data['site']['redmatrix']['PLATFORM_NAME'])) {
1191 $serverdata['platform'] = strtolower($data['site']['redmatrix']['PLATFORM_NAME']);
1192 } elseif (!empty($data['site']['redmatrix']['RED_PLATFORM'])) {
1193 $serverdata['platform'] = strtolower($data['site']['redmatrix']['RED_PLATFORM']);
1196 $serverdata['version'] = $data['site']['redmatrix']['RED_VERSION'];
1197 $serverdata['network'] = Protocol::ZOT;
1201 $inviteonly = false;
1204 if (!empty($data['site']['closed'])) {
1205 $closed = self::toBoolean($data['site']['closed']);
1208 if (!empty($data['site']['private'])) {
1209 $private = self::toBoolean($data['site']['private']);
1212 if (!empty($data['site']['inviteonly'])) {
1213 $inviteonly = self::toBoolean($data['site']['inviteonly']);
1216 if (!$closed && !$private and $inviteonly) {
1217 $serverdata['register_policy'] = Register::APPROVE;
1218 } elseif (!$closed && !$private) {
1219 $serverdata['register_policy'] = Register::OPEN;
1221 $serverdata['register_policy'] = Register::CLOSED;
1224 if (!empty($serverdata['network']) && in_array($serverdata['detection-method'],
1225 [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
1226 $serverdata['detection-method'] = self::DETECT_CONFIG_JSON;
1233 * Converts input value to a boolean value
1235 * @param string|integer $val
1239 private static function toBoolean($val)
1241 if (($val == 'true') || ($val == 1)) {
1243 } elseif (($val == 'false') || ($val == 0)) {
1251 * Detect if the URL belongs to a GNU Social server
1253 * @param string $url URL of the given server
1254 * @param array $serverdata array with server data
1256 * @return array server data
1258 private static function detectGNUSocial(string $url, array $serverdata)
1260 // Test for GNU Social
1261 $curlResult = Network::curl($url . '/api/gnusocial/version.json');
1262 if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
1263 ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
1264 $serverdata['platform'] = 'gnusocial';
1265 // Remove junk that some GNU Social servers return
1266 $serverdata['version'] = str_replace(chr(239) . chr(187) . chr(191), '', $curlResult->getBody());
1267 $serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
1268 $serverdata['version'] = trim($serverdata['version'], '"');
1269 $serverdata['network'] = Protocol::OSTATUS;
1271 if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
1272 $serverdata['detection-method'] = self::DETECT_GNUSOCIAL;
1278 // Test for Statusnet
1279 $curlResult = Network::curl($url . '/api/statusnet/version.json');
1280 if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
1281 ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
1283 // Remove junk that some GNU Social servers return
1284 $serverdata['version'] = str_replace(chr(239).chr(187).chr(191), '', $curlResult->getBody());
1285 $serverdata['version'] = str_replace(["\r", "\n", "\t"], '', $serverdata['version']);
1286 $serverdata['version'] = trim($serverdata['version'], '"');
1288 if (!empty($serverdata['version']) && strtolower(substr($serverdata['version'], 0, 7)) == 'pleroma') {
1289 $serverdata['platform'] = 'pleroma';
1290 $serverdata['version'] = trim(str_ireplace('pleroma', '', $serverdata['version']));
1291 $serverdata['network'] = Protocol::ACTIVITYPUB;
1293 $serverdata['platform'] = 'statusnet';
1294 $serverdata['network'] = Protocol::OSTATUS;
1297 if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
1298 $serverdata['detection-method'] = self::DETECT_STATUSNET;
1306 * Detect if the URL belongs to a Friendica server
1308 * @param string $url URL of the given server
1309 * @param array $serverdata array with server data
1311 * @return array server data
1313 private static function detectFriendica(string $url, array $serverdata)
1315 $curlResult = Network::curl($url . '/friendica/json');
1316 if (!$curlResult->isSuccess()) {
1317 $curlResult = Network::curl($url . '/friendika/json');
1319 $platform = 'Friendika';
1322 $platform = 'Friendica';
1325 if (!$curlResult->isSuccess()) {
1329 $data = json_decode($curlResult->getBody(), true);
1330 if (empty($data) || empty($data['version'])) {
1334 if (in_array($serverdata['detection-method'], [self::DETECT_HEADER, self::DETECT_BODY, self::DETECT_MANUAL])) {
1335 $serverdata['detection-method'] = $friendika ? self::DETECT_FRIENDIKA : self::DETECT_FRIENDICA;
1338 $serverdata['network'] = Protocol::DFRN;
1339 $serverdata['version'] = $data['version'];
1341 if (!empty($data['no_scrape_url'])) {
1342 $serverdata['noscrape'] = $data['no_scrape_url'];
1345 if (!empty($data['site_name'])) {
1346 $serverdata['site_name'] = $data['site_name'];
1349 if (!empty($data['info'])) {
1350 $serverdata['info'] = trim($data['info']);
1353 $register_policy = ($data['register_policy'] ?? '') ?: 'REGISTER_CLOSED';
1354 switch ($register_policy) {
1355 case 'REGISTER_OPEN':
1356 $serverdata['register_policy'] = Register::OPEN;
1359 case 'REGISTER_APPROVE':
1360 $serverdata['register_policy'] = Register::APPROVE;
1363 case 'REGISTER_CLOSED':
1364 case 'REGISTER_INVITATION':
1365 $serverdata['register_policy'] = Register::CLOSED;
1368 Logger::info('Register policy is invalid', ['policy' => $register_policy, 'server' => $url]);
1369 $serverdata['register_policy'] = Register::CLOSED;
1373 $serverdata['platform'] = strtolower($data['platform'] ?? $platform);
1379 * Analyses the landing page of a given server for hints about type and system of that server
1381 * @param object $curlResult result of curl execution
1382 * @param array $serverdata array with server data
1383 * @param string $url Server URL
1385 * @return array server data
1387 private static function analyseRootBody($curlResult, array $serverdata, string $url)
1389 $doc = new DOMDocument();
1390 @$doc->loadHTML($curlResult->getBody());
1391 $xpath = new DOMXPath($doc);
1393 $title = trim(XML::getFirstNodeValue($xpath, '//head/title/text()'));
1394 if (!empty($title)) {
1395 $serverdata['site_name'] = $title;
1398 $list = $xpath->query('//meta[@name]');
1400 foreach ($list as $node) {
1402 if ($node->attributes->length) {
1403 foreach ($node->attributes as $attribute) {
1404 $value = trim($attribute->value);
1405 if (empty($value)) {
1409 $attr[$attribute->name] = $value;
1412 if (empty($attr['name']) || empty($attr['content'])) {
1417 if ($attr['name'] == 'description') {
1418 $serverdata['info'] = $attr['content'];
1421 if (in_array($attr['name'], ['application-name', 'al:android:app_name', 'al:ios:app_name',
1422 'twitter:app:name:googleplay', 'twitter:app:name:iphone', 'twitter:app:name:ipad'])) {
1423 $serverdata['platform'] = strtolower($attr['content']);
1424 if (in_array($attr['content'], ['Misskey', 'Write.as'])) {
1425 $serverdata['network'] = Protocol::ACTIVITYPUB;
1428 if (($attr['name'] == 'generator') && (empty($serverdata['platform']) || (substr(strtolower($attr['content']), 0, 9) == 'wordpress'))) {
1429 $serverdata['platform'] = strtolower($attr['content']);
1430 $version_part = explode(' ', $attr['content']);
1432 if (count($version_part) == 2) {
1433 if (in_array($version_part[0], ['WordPress'])) {
1434 $serverdata['platform'] = strtolower($version_part[0]);
1435 $serverdata['version'] = $version_part[1];
1437 // We still do need a reliable test if some AP plugin is activated
1438 if (DBA::exists('apcontact', ['baseurl' => $url])) {
1439 $serverdata['network'] = Protocol::ACTIVITYPUB;
1441 $serverdata['network'] = Protocol::FEED;
1444 if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
1445 $serverdata['detection-method'] = self::DETECT_BODY;
1448 if (in_array($version_part[0], ['Friendika', 'Friendica'])) {
1449 $serverdata['platform'] = strtolower($version_part[0]);
1450 $serverdata['version'] = $version_part[1];
1451 $serverdata['network'] = Protocol::DFRN;
1457 $list = $xpath->query('//meta[@property]');
1459 foreach ($list as $node) {
1461 if ($node->attributes->length) {
1462 foreach ($node->attributes as $attribute) {
1463 $value = trim($attribute->value);
1464 if (empty($value)) {
1468 $attr[$attribute->name] = $value;
1471 if (empty($attr['property']) || empty($attr['content'])) {
1476 if ($attr['property'] == 'og:site_name') {
1477 $serverdata['site_name'] = $attr['content'];
1480 if ($attr['property'] == 'og:description') {
1481 $serverdata['info'] = $attr['content'];
1484 if ($attr['property'] == 'og:platform') {
1485 $serverdata['platform'] = strtolower($attr['content']);
1487 if (in_array($attr['content'], ['PeerTube'])) {
1488 $serverdata['network'] = Protocol::ACTIVITYPUB;
1492 if ($attr['property'] == 'generator') {
1493 $serverdata['platform'] = strtolower($attr['content']);
1495 if (in_array($attr['content'], ['hubzilla'])) {
1496 // We later check which compatible protocol modules are loaded.
1497 $serverdata['network'] = Protocol::ZOT;
1502 if (!empty($serverdata['network']) && ($serverdata['detection-method'] == self::DETECT_MANUAL)) {
1503 $serverdata['detection-method'] = self::DETECT_BODY;
1510 * Analyses the header data of a given server for hints about type and system of that server
1512 * @param object $curlResult result of curl execution
1513 * @param array $serverdata array with server data
1515 * @return array server data
1517 private static function analyseRootHeader($curlResult, array $serverdata)
1519 if ($curlResult->getHeader('server') == 'Mastodon') {
1520 $serverdata['platform'] = 'mastodon';
1521 $serverdata['network'] = Protocol::ACTIVITYPUB;
1522 } elseif ($curlResult->inHeader('x-diaspora-version')) {
1523 $serverdata['platform'] = 'diaspora';
1524 $serverdata['network'] = Protocol::DIASPORA;
1525 $serverdata['version'] = $curlResult->getHeader('x-diaspora-version');
1526 } elseif ($curlResult->inHeader('x-friendica-version')) {
1527 $serverdata['platform'] = 'friendica';
1528 $serverdata['network'] = Protocol::DFRN;
1529 $serverdata['version'] = $curlResult->getHeader('x-friendica-version');
1534 if ($serverdata['detection-method'] == self::DETECT_MANUAL) {
1535 $serverdata['detection-method'] = self::DETECT_HEADER;
1542 * Test if the body contains valid content
1544 * @param string $body
1547 private static function invalidBody(string $body)
1549 // Currently we only test for a HTML element.
1550 // Possibly we enhance this in the future.
1551 return !strpos($body, '>');
1555 * Update the user directory of a given gserver record
1557 * @param array $gserver gserver record
1559 public static function updateDirectory(array $gserver)
1561 /// @todo Add Mastodon API directory
1563 if (!empty($gserver['poco'])) {
1564 PortableContact::discoverSingleServer($gserver['id']);
1569 * Update GServer entries
1571 public static function discover()
1573 // Update the server list
1574 self::discoverFederation();
1578 $requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
1580 if ($requery_days == 0) {
1584 $last_update = date('c', time() - (60 * 60 * 24 * $requery_days));
1586 $gservers = DBA::p("SELECT `id`, `url`, `nurl`, `network`, `poco`
1588 WHERE `last_contact` >= `last_failure`
1590 AND `last_poco_query` < ?
1591 ORDER BY RAND()", $last_update
1594 while ($gserver = DBA::fetch($gservers)) {
1595 if (!GServer::check($gserver['url'], $gserver['network'])) {
1596 // The server is not reachable? Okay, then we will try it later
1597 $fields = ['last_poco_query' => DateTimeFormat::utcNow()];
1598 DBA::update('gserver', $fields, ['nurl' => $gserver['nurl']]);
1602 Logger::info('Update directory', ['server' => $gserver['url'], 'id' => $gserver['id']]);
1603 Worker::add(PRIORITY_LOW, 'UpdateServerDirectory', $gserver);
1605 if (--$no_of_queries == 0) {
1610 DBA::close($gservers);
1614 * Discover federated servers
1616 private static function discoverFederation()
1618 $last = DI::config()->get('poco', 'last_federation_discovery');
1621 $next = $last + (24 * 60 * 60);
1623 if ($next > time()) {
1628 // Discover federated servers
1629 $protocols = ['activitypub', 'diaspora', 'dfrn', 'ostatus'];
1630 foreach ($protocols as $protocol) {
1631 $query = '{nodes(protocol:"' . $protocol . '"){host}}';
1632 $curlResult = Network::fetchUrl('https://the-federation.info/graphql?query=' . urlencode($query));
1633 if (!empty($curlResult)) {
1634 $data = json_decode($curlResult, true);
1635 if (!empty($data['data']['nodes'])) {
1636 foreach ($data['data']['nodes'] as $server) {
1637 // Using "only_nodeinfo" since servers that are listed on that page should always have it.
1638 echo $server['host']."\n";
1639 Worker::add(PRIORITY_LOW, 'UpdateGServer', 'https://' . $server['host'], true);
1645 // Disvover Mastodon servers
1646 $accesstoken = DI::config()->get('system', 'instances_social_key');
1648 if (!empty($accesstoken)) {
1649 $api = 'https://instances.social/api/1.0/instances/list?count=0';
1650 $header = ['Authorization: Bearer '.$accesstoken];
1651 $curlResult = Network::curl($api, false, ['headers' => $header]);
1652 if ($curlResult->isSuccess()) {
1653 $servers = json_decode($curlResult->getBody(), true);
1655 foreach ($servers['instances'] as $server) {
1656 $url = (is_null($server['https_score']) ? 'http' : 'https') . '://' . $server['name'];
1657 Worker::add(PRIORITY_LOW, 'UpdateGServer', $url);
1662 DI::config()->set('poco', 'last_federation_discovery', time());