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friendica-github/src/Model/GServer.php

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New class for handling gserver entries
2019-10-03 09:20:36 +00:00
<?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, $serverdata);
}
// the "siteinfo.json" is some specific endpoint of Hubzilla and Red
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if (empty($serverdata['network']) || ($serverdata['network'] == Protocol::ZOT)) {
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$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);
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// When we don't have the registered users, we simply count what we know
if (empty($serverdata['registered-users'])) {
$gcontacts = DBA::count('gcontact', ['server_url' => [$url, $serverdata['nurl']]]);
$apcontacts = DBA::count('apcontact', ['baseurl' => [$url, $serverdata['nurl']]]);
$contacts = DBA::count('contact', ['uid' => 0, 'baseurl' => [$url, $serverdata['nurl']]]);
$serverdata['registered-users'] = max($gcontacts, $apcontacts, $contacts);
}
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$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] = $attribute->value;
}
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if (empty($attr['name']) || empty($attr['content'])) {
continue;
}
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}
//print_r($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] = $attribute->value;
}
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if (empty($attr['property']) || empty($attr['content'])) {
continue;
}
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}
//print_r($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'];
// $serverdata['network'] = Protocol::ACTIVITYPUB;
// }
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if ($attr['property'] == 'og:platform') {
$serverdata['platform'] = $attr['content'];
if (in_array($attr['content'], ['PeerTube'])) {
$serverdata['network'] = Protocol::ACTIVITYPUB;
}
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}
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if ($attr['property'] == 'generator') {
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$serverdata['platform'] = $attr['content'];
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if (in_array($attr['content'], ['hubzilla'])) {
// We later check which compatible protocol modules are loaded.
$serverdata['network'] = Protocol::ZOT;
}
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}
}
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;
}
}
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