--- /dev/null
+<?php
+
+/**
+ * @file src/Model/GServer.php
+ * @brief This file includes the GServer class to handle with servers
+ */
+namespace Friendica\Model;
+
+use DOMDocument;
+use DOMXPath;
+use Friendica\Core\Config;
+use Friendica\Core\Protocol;
+use Friendica\Database\DBA;
+use Friendica\Module\Register;
+use Friendica\Util\Network;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Strings;
+use Friendica\Util\XML;
+use Friendica\Core\Logger;
+
+/*
+use Exception;
+use Friendica\Core\System;
+use Friendica\Core\Worker;
+use Friendica\Network\Probe;
+use Friendica\Protocol\PortableContact;
+*/
+/**
+ * @brief This class handles GServer related functions
+ */
+class GServer
+{
+ /**
+ * Detect server type
+ *
+ * @param string $url Server url
+ * @param boolean $force Force update
+ *
+ * @return boolean 'true' if server could be detected
+ */
+ public static function detect($url, $force = false)
+ {
+ /// @Todo:
+ // - Update Check
+ // - poco
+ // - Pleroma version number
+
+// $gserver = DBA::selectFirst('gserver', [], ['nurl' => Strings::normaliseLink($url)]);
+ $serverdata = [];
+
+ // When a nodeinfo is present, we don't need to dig further
+ $xrd_timeout = Config::get('system', 'xrd_timeout');
+ $curlResult = Network::curl($url . '/.well-known/nodeinfo', false, ['timeout' => $xrd_timeout]);
+ if ($curlResult->isTimeout()) {
+ DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($url)]);
+ return false;
+ }
+
+ $nodeinfo = self::fetchNodeinfo($url, $curlResult);
+
+ if (empty($nodeinfo) || ($nodeinfo['network'] == Protocol::DFRN)) {
+ // Fetch the landing page, possibly it reveals some data
+ $curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout]);
+ if ($curlResult->isSuccess()) {
+ $serverdata = self::analyseRootHeader($curlResult, $serverdata);
+ $serverdata = self::analyseRootBody($curlResult, $serverdata);
+ }
+
+ if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
+ DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => Strings::normaliseLink($url)]);
+ return false;
+ }
+
+ if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::DFRN)) {
+ $serverdata = self::detectFriendica($url, $serverdata);
+ }
+
+ if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ACTIVITYPUB)) {
+ $serverdata = self::detectMastodonAlikes($url, $serverdata);
+ }
+
+ // the "siteinfo.json" is some specific endpoint of Hubzilla and Red
+ if (empty($serverdata['network']) || (($serverdata['network'] == Protocol::DIASPORA) && ($serverdata['platform'] != 'diaspora'))) {
+ $serverdata = self::fetchSiteinfo($url, $serverdata);
+ }
+
+ if (empty($serverdata['network'])) {
+ $serverdata = self::detectNextcloud($url, $serverdata);
+ }
+
+ if (empty($serverdata['network'])) {
+ $serverdata = self::detectGNUSocial($url, $serverdata);
+ }
+ } else {
+ $serverdata = $nodeinfo;
+ }
+
+ // We can't detect the network type. Possibly it is some system that we don't know yet
+ if (empty($serverdata['network'])) {
+ $serverdata['network'] = Protocol::PHANTOM;
+ }
+
+ $serverdata['url'] = $url;
+ $serverdata['nurl'] = Strings::normaliseLink($url);
+
+ $fields = array_keys($serverdata);
+ $old_data = DBA::selectFirst('gserver', $fields, ['nurl' => Strings::normaliseLink($url)]);
+ if (!DBA::isResult($old_data)) {
+die('Möööp');
+ $serverdata['created'] = DateTimeFormat::utcNow();
+ DBA::insert('gserver', $serverdata);
+ } else {
+ $serverdata['last_contact'] = DateTimeFormat::utcNow();
+ DBA::update('gserver', $serverdata, ['nurl' => $serverdata['nurl']], $old_data);
+ }
+
+ return $serverdata;
+ }
+
+ /**
+ * @brief Detect server type by using the nodeinfo data
+ *
+ * @param string $url address of the server
+ * @return array Server data
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ */
+ private static function fetchNodeinfo($url, $curlResult)
+ {
+ $nodeinfo = json_decode($curlResult->getBody(), true);
+
+ if (!is_array($nodeinfo) || !isset($nodeinfo['links'])) {
+ return [];
+ }
+
+ $nodeinfo1_url = '';
+ $nodeinfo2_url = '';
+
+ foreach ($nodeinfo['links'] as $link) {
+ if (!is_array($link) || empty($link['rel']) || empty($link['href'])) {
+ Logger::info('Invalid nodeinfo format', ['url' => $url]);
+ continue;
+ }
+ if ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/1.0') {
+ $nodeinfo1_url = $link['href'];
+ } elseif ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/2.0') {
+ $nodeinfo2_url = $link['href'];
+ }
+ }
+
+ if ($nodeinfo1_url . $nodeinfo2_url == '') {
+ return [];
+ }
+
+ $server = [];
+
+ // When the nodeinfo url isn't on the same host, then there is obviously something wrong
+ if (!empty($nodeinfo2_url) && (parse_url($url, PHP_URL_HOST) == parse_url($nodeinfo2_url, PHP_URL_HOST))) {
+ $server = self::parseNodeinfo2($nodeinfo2_url);
+ }
+
+ // When the nodeinfo url isn't on the same host, then there is obviously something wrong
+ if (empty($server) && !empty($nodeinfo1_url) && (parse_url($url, PHP_URL_HOST) == parse_url($nodeinfo1_url, PHP_URL_HOST))) {
+ $server = self::parseNodeinfo1($nodeinfo1_url);
+ }
+
+ return $server;
+ }
+
+ /**
+ * @brief Parses Nodeinfo 1
+ *
+ * @param string $nodeinfo_url address of the nodeinfo path
+ * @return array Server data
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ */
+ private static function parseNodeinfo1($nodeinfo_url)
+ {
+ $curlResult = Network::curl($nodeinfo_url);
+
+ if (!$curlResult->isSuccess()) {
+ return false;
+ }
+
+ $nodeinfo = json_decode($curlResult->getBody(), true);
+
+ if (!is_array($nodeinfo)) {
+ return false;
+ }
+
+ $server = [];
+
+ $server['register_policy'] = Register::CLOSED;
+
+ if (!empty($nodeinfo['openRegistrations'])) {
+ $server['register_policy'] = Register::OPEN;
+ }
+
+ if (is_array($nodeinfo['software'])) {
+ if (isset($nodeinfo['software']['name'])) {
+ $server['platform'] = $nodeinfo['software']['name'];
+ }
+
+ if (isset($nodeinfo['software']['version'])) {
+ $server['version'] = $nodeinfo['software']['version'];
+ // Version numbers on Nodeinfo are presented with additional info, e.g.:
+ // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
+ $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
+ }
+ }
+
+ if (isset($nodeinfo['metadata']['nodeName'])) {
+ $server['site_name'] = $nodeinfo['metadata']['nodeName'];
+ }
+
+ if (!empty($nodeinfo['usage']['users']['total'])) {
+ $server['registered-users'] = $nodeinfo['usage']['users']['total'];
+ }
+
+ if (!empty($nodeinfo['protocols']['inbound']) && is_array($nodeinfo['protocols']['inbound'])) {
+ $protocols = [];
+ foreach ($nodeinfo['protocols']['inbound'] as $protocol) {
+ $protocols[$protocol] = true;
+ }
+
+ if (!empty($protocols['friendica'])) {
+ $server['network'] = Protocol::DFRN;
+ } elseif (!empty($protocols['activitypub'])) {
+ $server['network'] = Protocol::ACTIVITYPUB;
+ } elseif (!empty($protocols['diaspora'])) {
+ $server['network'] = Protocol::DIASPORA;
+ } elseif (!empty($protocols['ostatus'])) {
+ $server['network'] = Protocol::OSTATUS;
+ } elseif (!empty($protocols['gnusocial'])) {
+ $server['network'] = Protocol::OSTATUS;
+ } else {
+ print_r($protocols);
+ die('Protocol 1');
+ }
+ }
+
+ if (!$server) {
+ return false;
+ }
+
+ return $server;
+ }
+
+ /**
+ * @brief Parses Nodeinfo 2
+ *
+ * @param string $nodeinfo_url address of the nodeinfo path
+ * @return array Server data
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ */
+ private static function parseNodeinfo2($nodeinfo_url)
+ {
+ $curlResult = Network::curl($nodeinfo_url);
+ if (!$curlResult->isSuccess()) {
+ return false;
+ }
+
+ $nodeinfo = json_decode($curlResult->getBody(), true);
+
+ if (!is_array($nodeinfo)) {
+ return false;
+ }
+
+ $server = [];
+
+ $server['register_policy'] = Register::CLOSED;
+
+ if (!empty($nodeinfo['openRegistrations'])) {
+ $server['register_policy'] = Register::OPEN;
+ }
+
+ if (is_array($nodeinfo['software'])) {
+ if (isset($nodeinfo['software']['name'])) {
+ $server['platform'] = $nodeinfo['software']['name'];
+ }
+
+ if (isset($nodeinfo['software']['version'])) {
+ $server['version'] = $nodeinfo['software']['version'];
+ // Version numbers on Nodeinfo are presented with additional info, e.g.:
+ // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
+ $server['version'] = preg_replace('=(.+)-(.{4,})=ism', '$1', $server['version']);
+ }
+ }
+
+ if (isset($nodeinfo['metadata']['nodeName'])) {
+ $server['site_name'] = $nodeinfo['metadata']['nodeName'];
+ }
+
+ if (!empty($nodeinfo['usage']['users']['total'])) {
+ $server['registered-users'] = $nodeinfo['usage']['users']['total'];
+ }
+
+ if (!empty($nodeinfo['protocols'])) {
+ $protocols = [];
+ foreach ($nodeinfo['protocols'] as $protocol) {
+ $protocols[$protocol] = true;
+ }
+
+ if (!empty($protocols['friendica'])) {
+ $server['network'] = Protocol::DFRN;
+ } elseif (!empty($protocols['activitypub'])) {
+ $server['network'] = Protocol::ACTIVITYPUB;
+ } elseif (!empty($protocols['diaspora'])) {
+ $server['network'] = Protocol::DIASPORA;
+ } elseif (!empty($protocols['ostatus'])) {
+ $server['network'] = Protocol::OSTATUS;
+ } elseif (!empty($protocols['gnusocial'])) {
+ $server['network'] = Protocol::OSTATUS;
+ } else {
+ print_r($protocols);
+ die('Protocol 2');
+ }
+ }
+
+ if (empty($server)) {
+ return false;
+ }
+
+ return $server;
+ }
+
+ private static function fetchSiteinfo($url, $serverdata)
+ {
+ $curlResult = Network::curl($url . '/siteinfo.json');
+ if (!$curlResult->isSuccess()) {
+ return $serverdata;
+ }
+
+ $data = json_decode($curlResult->getBody(), true);
+ if (empty($data)) {
+ return $serverdata;
+ }
+
+ if (isset($data['url'])) {
+ $serverdata['platform'] = $data['platform'];
+ $serverdata['version'] = $data['version'];
+ }
+
+ if (!empty($data['plugins'])) {
+ if (in_array('pubcrawl', $data['plugins'])) {
+ $serverdata['network'] = Protocol::ACTIVITYPUB;
+ } elseif (in_array('diaspora', $data['plugins'])) {
+ $serverdata['network'] = Protocol::DIASPORA;
+ } elseif (in_array('gnusoc', $data['plugins'])) {
+ $serverdata['network'] = Protocol::OSTATUS;
+ } else {
+ $serverdata['network'] = Protocol::ZOT;
+ }
+ }
+
+ if (!empty($data['site_name'])) {
+ $serverdata['site_name'] = $data['site_name'];
+ }
+
+ if (!empty($data['channels_total'])) {
+ $serverdata['registered-users'] = $data['channels_total'];
+ }
+
+ if (!empty($data['register_policy'])) {
+ switch ($data['register_policy']) {
+ case "REGISTER_OPEN":
+ $serverdata['register_policy'] = Register::OPEN;
+ break;
+
+ case "REGISTER_APPROVE":
+ $serverdata['register_policy'] = Register::APPROVE;
+ break;
+
+ case "REGISTER_CLOSED":
+ default:
+ $serverdata['register_policy'] = Register::CLOSED;
+ break;
+ }
+ }
+
+ return $serverdata;
+ }
+
+ private static function detectNextcloud($url, $serverdata)
+ {
+ $curlResult = Network::curl($url . '/status.php');
+
+ if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
+ return $serverdata;
+ }
+
+ $data = json_decode($curlResult->getBody(), true);
+ if (empty($data)) {
+ return $serverdata;
+ }
+
+ if (!empty($data['version'])) {
+ $serverdata['platform'] = 'nextcloud';
+ $serverdata['version'] = $data['version'];
+ $serverdata['network'] = Protocol::ACTIVITYPUB;
+ }
+
+ return $serverdata;
+ }
+
+ private static function detectMastodonAlikes($url, $serverdata)
+ {
+ $curlResult = Network::curl($url . '/api/v1/instance');
+
+ if (!$curlResult->isSuccess() || ($curlResult->getBody() == '')) {
+ return $serverdata;
+ }
+
+ $data = json_decode($curlResult->getBody(), true);
+ if (empty($data)) {
+ return $serverdata;
+ }
+
+ if (isset($data['version'])) {
+ $serverdata['platform'] = 'mastodon';
+ $serverdata['version'] = defaults($data, 'version', '');
+ if (!empty($data['title'])) {
+ $serverdata['site_name'] = $data['title'];
+ }
+ if (!empty($data['description'])) {
+ $serverdata['info'] = trim($data['description']);
+ }
+ $serverdata['network'] = Protocol::ACTIVITYPUB;
+ }
+
+ if (!empty($data['stats']['user_count'])) {
+ $serverdata['registered-users'] = $data['stats']['user_count'];
+ }
+
+ if (strstr($serverdata['version'], 'Pleroma')) {
+ $serverdata['platform'] = 'pleroma';
+ $serverdata['version'] = trim(str_replace('Pleroma', '', $serverdata['version'])); // 2.7.2 (compatible; Pleroma 1.0.0-1225-gf31ad554-develop)
+ }
+
+ if (strstr($serverdata['version'], 'Pixelfed')) {
+ print_r($serverdata);
+ die();
+// $serverdata['platform'] = 'pixelfed';
+// $serverdata['version'] = trim(str_replace('Pixelfed', '', $serverdata['version'])); // 2.7.2 (compatible; Pixelfed 0.10.5)
+ }
+
+ return $serverdata;
+ }
+
+ private static function detectGNUSocial($url, $serverdata)
+ {
+ $curlResult = Network::curl($url . '/api/statusnet/version.json');
+
+ if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
+ ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
+ $serverdata['platform'] = 'StatusNet';
+ // Remove junk that some GNU Social servers return
+ $serverdata['version'] = str_replace(chr(239).chr(187).chr(191), '', $curlResult->getBody());
+ $serverdata['version'] = trim($serverdata['version'], '"');
+ $serverdata['network'] = Protocol::OSTATUS;
+ }
+
+ // Test for GNU Social
+ $curlResult = Network::curl($url . '/api/gnusocial/version.json');
+
+ if ($curlResult->isSuccess() && ($curlResult->getBody() != '{"error":"not implemented"}') &&
+ ($curlResult->getBody() != '') && (strlen($curlResult->getBody()) < 30)) {
+ $serverdata['platform'] = 'GNU Social';
+ // Remove junk that some GNU Social servers return
+ $serverdata['version'] = str_replace(chr(239) . chr(187) . chr(191), '', $curlResult->getBody());
+ $serverdata['version'] = trim($serverdata['version'], '"');
+ $serverdata['network'] = Protocol::OSTATUS;
+ }
+
+ return $serverdata;
+ }
+
+ private static function detectFriendica($url, $serverdata)
+ {
+ $curlResult = Network::curl($url . '/friendica/json');
+ if (!$curlResult->isSuccess()) {
+ $curlResult = Network::curl($url . '/friendika/json');
+ }
+
+ if (!$curlResult->isSuccess()) {
+ return $serverdata;
+ }
+
+ $data = json_decode($curlResult->getBody(), true);
+ if (empty($data) || empty($data['version'])) {
+ return $serverdata;
+ }
+
+ $serverdata['network'] = Protocol::DFRN;
+ $serverdata['version'] = $data['version'];
+
+ if (!empty($data['no_scrape_url'])) {
+ $serverdata['noscrape'] = $data['no_scrape_url'];
+ }
+
+ if (!empty($data['site_name'])) {
+ $serverdata['site_name'] = $data['site_name'];
+ }
+
+ if (!empty($data['info'])) {
+ $serverdata['info'] = trim($data['info']);
+ }
+
+ $register_policy = defaults($data, 'register_policy', 'REGISTER_CLOSED');
+ switch ($register_policy) {
+ case 'REGISTER_OPEN':
+ $serverdata['register_policy'] = Register::OPEN;
+ break;
+
+ case 'REGISTER_APPROVE':
+ $serverdata['register_policy'] = Register::APPROVE;
+ break;
+
+ case 'REGISTER_CLOSED':
+ case 'REGISTER_INVITATION':
+ $serverdata['register_policy'] = Register::CLOSED;
+ break;
+ default:
+ Logger::info('Register policy is invalid', ['policy' => $register_policy, 'server' => $url]);
+ $serverdata['register_policy'] = Register::CLOSED;
+ break;
+ }
+
+ $serverdata['platform'] = defaults($data, 'platform', '');
+
+ return $serverdata;
+ }
+
+ private static function analyseRootBody($curlResult, $serverdata)
+ {
+ $doc = new DOMDocument();
+ @$doc->loadHTML($curlResult->getBody());
+ $xpath = new DOMXPath($doc);
+
+ $title = trim(XML::getFirstNodeValue($xpath, '//head/title/text()'));
+ if (!empty($title)) {
+ $serverdata['site_name'] = $title;
+ }
+
+ $list = $xpath->query('//meta[@name]');
+
+ foreach ($list as $node) {
+ $attr = [];
+ if ($node->attributes->length) {
+ foreach ($node->attributes as $attribute) {
+ $attribute->value = trim($attribute->value);
+ if (empty($attribute->value)) {
+ continue;
+ }
+
+ $attr[$attribute->name] = $attribute->value;
+ }
+ }
+//print_r($attr);
+ if ($attr['name'] == 'description') {
+ $serverdata['info'] = $attr['content'];
+ }
+
+ if ($attr['name'] == 'application-name') {
+ $serverdata['platform'] = $attr['content'];
+ if (in_array($attr['content'], ['Misskey', 'Write.as'])) {
+ $serverdata['network'] = Protocol::ACTIVITYPUB;
+ }
+ }
+//
+ if (($attr['name'] == 'generator') && in_array($attr['content'], ['Write.as'])) {
+die('as');
+// $serverdata['platform'] = $attr['content'];
+// $serverdata['network'] = Protocol::ACTIVITYPUB;
+ } elseif ($attr['name'] == 'generator') {
+ $serverdata['platform'] = $attr['content'];
+
+ $version_part = explode(' ', $attr['content']);
+
+ if (count($version_part) == 3) {
+ if (($version_part[0] == 'Red') && ($version_part[1] == 'Matrix')) {
+// $serverdata['platform'] = $version_part[0] . ' ' . $version_part[1];
+// $serverdata['version'] = $version_part[2];
+// $serverdata['network'] = Protocol::DIASPORA;
+ }
+ } elseif (count($version_part) == 2) {
+ if (in_array($version_part[0], ['WordPress'])) {
+ $serverdata['platform'] = $version_part[0];
+ $serverdata['version'] = $version_part[1];
+ $serverdata['network'] = Protocol::ACTIVITYPUB;
+ }
+ if (in_array($version_part[0], ['Friendika', 'Friendica'])) {
+ $serverdata['platform'] = $version_part[0];
+ $serverdata['version'] = $version_part[1];
+ $serverdata['network'] = Protocol::DFRN;
+ }
+ }
+ }
+ }
+
+ $list = $xpath->query('//meta[@property]');
+
+ foreach ($list as $node) {
+ $attr = [];
+ if ($node->attributes->length) {
+ foreach ($node->attributes as $attribute) {
+ $attribute->value = trim($attribute->value);
+ if (empty($attribute->value)) {
+ continue;
+ }
+
+ $attr[$attribute->name] = $attribute->value;
+ }
+ }
+//print_r($attr);
+
+ if ($attr['property'] == 'og:site_name') {
+ $serverdata['site_name'] = $attr['content'];
+ }
+
+ if ($attr['property'] == 'og:description') {
+ $serverdata['info'] = $attr['content'];
+ }
+
+// if (($attr['property'] == 'og:title') && in_array($attr['content'], ['pixelfed', 'Socialhome'])) {
+// if (($attr['property'] == 'og:title') && in_array($attr['content'], ['Nextcloud'])) {
+// $serverdata['platform'] = $attr['content'];
+// $serverdata['network'] = Protocol::ACTIVITYPUB;
+// }
+
+ if (($attr['property'] == 'og:platform') && in_array($attr['content'], ['PeerTube'])) {
+die('Peertube');
+// $serverdata['platform'] = $attr['content'];
+// $serverdata['network'] = Protocol::ACTIVITYPUB;
+ }
+
+ if (($attr['property'] == 'generator') && in_array($attr['content'], ['hubzilla'])) {
+ $serverdata['platform'] = $attr['content'];
+ $serverdata['network'] = Protocol::DIASPORA;
+ }
+ }
+
+ return $serverdata;
+ }
+
+ private static function analyseRootHeader($curlResult, $serverdata)
+ {
+ if ($curlResult->getHeader('server') == 'Mastodon') {
+ $serverdata['platform'] = 'mastodon';
+ $serverdata['network'] = $network = Protocol::ACTIVITYPUB;
+ } elseif ($curlResult->inHeader('x-diaspora-version')) {
+ $serverdata['platform'] = 'diaspora';
+ $serverdata['network'] = $network = Protocol::DIASPORA;
+ $serverdata['version'] = $curlResult->getHeader('x-diaspora-version');
+
+ } elseif ($curlResult->inHeader('x-friendica-version')) {
+ $serverdata['platform'] = 'friendica';
+ $serverdata['network'] = $network = Protocol::DFRN;
+ $serverdata['version'] = $curlResult->getHeader('x-friendica-version');
+
+ } else {
+//print_r($curlResult->getHeaderArray());
+ }
+ return $serverdata;
+ }
+}
projects / friendica.git / commitdiff