Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Protocol/PortableContact.php
*
* @todo Move GNU Social URL schemata (http://server.tld/user/number) to http://server.tld/username
* @todo Fetch profile data from profile page for Redmatrix users
* @todo Detect if it is a forum
*/
namespace Friendica\Protocol;
use DOMDocument;
use DOMXPath;
use Exception;
use Friendica\Content\Text\HTML;
use Friendica\Core\Config;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
use Friendica\Model\Contact;
use Friendica\Model\GContact;
use Friendica\Model\GServer;
use Friendica\Model\Profile;
use Friendica\Module\Register;
use Friendica\Network\Probe;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Network;
use Friendica\Util\Strings;
use Friendica\Util\XML;
class PortableContact
{
const DISABLED = 0;
const USERS = 1;
const USERS_GCONTACTS = 2;
const USERS_GCONTACTS_FALLBACK = 3;
/**
* @brief Fetch POCO data
*
* @param integer $cid Contact ID
* @param integer $uid User ID
* @param integer $zcid Global Contact ID
* @param integer $url POCO address that should be polled
*
* Given a contact-id (minimum), load the PortableContacts friend list for that contact,
* and add the entries to the gcontact (Global Contact) table, or update existing entries
* if anything (name or photo) has changed.
* We use normalised urls for comparison which ignore http vs https and www.domain vs domain
*
* Once the global contact is stored add (if necessary) the contact linkage which associates
* the given uid, cid to the global contact entry. There can be many uid/cid combinations
* pointing to the same global contact id.
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function loadWorker($cid, $uid = 0, $zcid = 0, $url = null)
{
// Call the function "load" via the worker
Worker::add(PRIORITY_LOW, "DiscoverPoCo", "load", (int)$cid, (int)$uid, (int)$zcid, $url);
}
/**
* @brief Fetch POCO data from the worker
*
* @param integer $cid Contact ID
* @param integer $uid User ID
* @param integer $zcid Global Contact ID
* @param integer $url POCO address that should be polled
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function load($cid, $uid, $zcid, $url)
{
if ($cid) {
if (!$url || !$uid) {
$contact = DBA::selectFirst('contact', ['poco', 'uid'], ['id' => $cid]);
if (DBA::isResult($contact)) {
$url = $contact['poco'];
$uid = $contact['uid'];
}
}
if (!$uid) {
return;
}
}
if (!$url) {
return;
}
$url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation');
Logger::log('load: ' . $url, Logger::DEBUG);
$fetchresult = Network::fetchUrlFull($url);
$s = $fetchresult->getBody();
Logger::log('load: returns ' . $s, Logger::DATA);
Logger::log('load: return code: ' . $fetchresult->getReturnCode(), Logger::DEBUG);
if (($fetchresult->getReturnCode() > 299) || (! $s)) {
return;
}
$j = json_decode($s, true);
Logger::log('load: json: ' . print_r($j, true), Logger::DATA);
if (!isset($j['entry'])) {
return;
}
$total = 0;
foreach ($j['entry'] as $entry) {
$total ++;
$profile_url = '';
$profile_photo = '';
$connect_url = '';
$name = '';
$network = '';
$updated = DBA::NULL_DATETIME;
$location = '';
$about = '';
$keywords = '';
$gender = '';
$contact_type = -1;
$generation = 0;
if (!empty($entry['displayName'])) {
$name = $entry['displayName'];
}
if (isset($entry['urls'])) {
foreach ($entry['urls'] as $url) {
if ($url['type'] == 'profile') {
$profile_url = $url['value'];
continue;
}
if ($url['type'] == 'webfinger') {
$connect_url = str_replace('acct:', '', $url['value']);
continue;
}
}
}
if (isset($entry['photos'])) {
foreach ($entry['photos'] as $photo) {
if ($photo['type'] == 'profile') {
$profile_photo = $photo['value'];
continue;
}
}
}
if (isset($entry['updated'])) {
$updated = date(DateTimeFormat::MYSQL, strtotime($entry['updated']));
}
if (isset($entry['network'])) {
$network = $entry['network'];
}
if (isset($entry['currentLocation'])) {
$location = $entry['currentLocation'];
}
if (isset($entry['aboutMe'])) {
$about = HTML::toBBCode($entry['aboutMe']);
}
if (isset($entry['gender'])) {
$gender = $entry['gender'];
}
if (isset($entry['generation']) && ($entry['generation'] > 0)) {
$generation = ++$entry['generation'];
}
if (isset($entry['tags'])) {
foreach ($entry['tags'] as $tag) {
$keywords = implode(", ", $tag);
}
}
if (isset($entry['contactType']) && ($entry['contactType'] >= 0)) {
$contact_type = $entry['contactType'];
}
$gcontact = ["url" => $profile_url,
"name" => $name,
"network" => $network,
"photo" => $profile_photo,
"about" => $about,
"location" => $location,
"gender" => $gender,
"keywords" => $keywords,
"connect" => $connect_url,
"updated" => $updated,
"contact-type" => $contact_type,
"generation" => $generation];
try {
$gcontact = GContact::sanitize($gcontact);
$gcid = GContact::update($gcontact);
GContact::link($gcid, $uid, $cid, $zcid);
} catch (Exception $e) {
Logger::log($e->getMessage(), Logger::DEBUG);
}
}
Logger::log("load: loaded $total entries", Logger::DEBUG);
$condition = ["`cid` = ? AND `uid` = ? AND `zcid` = ? AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY", $cid, $uid, $zcid];
DBA::delete('glink', $condition);
}
public static function alternateOStatusUrl($url)
{
return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
}
public static function updateNeeded($created, $updated, $last_failure, $last_contact)
{
$now = strtotime(DateTimeFormat::utcNow());
if ($updated > $last_contact) {
$contact_time = strtotime($updated);
} else {
$contact_time = strtotime($last_contact);
}
$failure_time = strtotime($last_failure);
$created_time = strtotime($created);
// If there is no "created" time then use the current time
if ($created_time <= 0) {
$created_time = $now;
}
// If the last contact was less than 24 hours then don't update
if (($now - $contact_time) < (60 * 60 * 24)) {
return false;
}
// If the last failure was less than 24 hours then don't update
if (($now - $failure_time) < (60 * 60 * 24)) {
return false;
}
// If the last contact was less than a week ago and the last failure is older than a week then don't update
//if ((($now - $contact_time) < (60 * 60 * 24 * 7)) && ($contact_time > $failure_time))
// return false;
// If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week
if ((($now - $contact_time) > (60 * 60 * 24 * 7)) && (($now - $created_time) > (60 * 60 * 24 * 7)) && (($now - $failure_time) < (60 * 60 * 24 * 7))) {
return false;
}
// If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month
if ((($now - $contact_time) > (60 * 60 * 24 * 30)) && (($now - $created_time) > (60 * 60 * 24 * 30)) && (($now - $failure_time) < (60 * 60 * 24 * 30))) {
return false;
}
return true;
}
/**
* @brief Returns a list of all known servers
* @return array List of server urls
* @throws Exception
*/
public static function serverlist()
{
$r = q(
"SELECT `url`, `site_name` AS `displayName`, `network`, `platform`, `version` FROM `gserver`
WHERE `network` IN ('%s', '%s', '%s') AND `last_contact` > `last_failure`
ORDER BY `last_contact`
LIMIT 1000",
DBA::escape(Protocol::DFRN),
DBA::escape(Protocol::DIASPORA),
DBA::escape(Protocol::OSTATUS)
);
if (!DBA::isResult($r)) {
return false;
}
return $r;
}
/**
* @brief Fetch server list from remote servers and adds them when they are new.
*
* @param string $poco URL to the POCO endpoint
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function fetchServerlist($poco)
{
$curlResult = Network::curl($poco . "/@server");
if (!$curlResult->isSuccess()) {
return;
}
$serverlist = json_decode($curlResult->getBody(), true);
if (!is_array($serverlist)) {
return;
}
foreach ($serverlist as $server) {
$server_url = str_replace("/index.php", "", $server['url']);
$r = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", DBA::escape(Strings::normaliseLink($server_url)));
if (!DBA::isResult($r)) {
Logger::log("Call server check for server ".$server_url, Logger::DEBUG);
Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", $server_url);
}
}
}
private static function discoverFederation()
{
$last = Config::get('poco', 'last_federation_discovery');
if ($last) {
$next = $last + (24 * 60 * 60);
if ($next > time()) {
return;
}
}
// Discover Friendica, Hubzilla and Diaspora servers
$curlResult = Network::fetchUrl("http://the-federation.info/pods.json");
if (!empty($curlResult)) {
$servers = json_decode($curlResult, true);
if (!empty($servers['pods'])) {
foreach ($servers['pods'] as $server) {
Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", "https://" . $server['host']);
}
}
}
// Disvover Mastodon servers
if (!Config::get('system', 'ostatus_disabled')) {
$accesstoken = Config::get('system', 'instances_social_key');
if (!empty($accesstoken)) {
$api = 'https://instances.social/api/1.0/instances/list?count=0';
$header = ['Authorization: Bearer '.$accesstoken];
$curlResult = Network::curl($api, false, ['headers' => $header]);
if ($curlResult->isSuccess()) {
$servers = json_decode($curlResult->getBody(), true);
foreach ($servers['instances'] as $server) {
$url = (is_null($server['https_score']) ? 'http' : 'https') . '://' . $server['name'];
Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", $url);
}
}
}
}
// Currently disabled, since the service isn't available anymore.
// It is not removed since I hope that there will be a successor.
// Discover GNU Social Servers.
//if (!Config::get('system','ostatus_disabled')) {
// $serverdata = "http://gstools.org/api/get_open_instances/";
// $curlResult = Network::curl($serverdata);
// if ($curlResult->isSuccess()) {
// $servers = json_decode($result->getBody(), true);
// foreach($servers['data'] as $server)
// GServer::check($server['instance_address']);
// }
//}
Config::set('poco', 'last_federation_discovery', time());
}
public static function discoverSingleServer($id)
{
$server = DBA::selectFirst('gserver', ['poco', 'nurl', 'url', 'network'], ['id' => $id]);
if (!DBA::isResult($server)) {
return false;
}
// Discover new servers out there (Works from Friendica version 3.5.2)
self::fetchServerlist($server["poco"]);
// Fetch all users from the other server
$url = $server["poco"] . "/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
Logger::info("Fetch all users from the server " . $server["url"]);
$curlResult = Network::curl($url);
if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
$data = json_decode($curlResult->getBody(), true);
if (!empty($data)) {
self::discoverServer($data, 2);
}
if (Config::get('system', 'poco_discovery') >= self::USERS_GCONTACTS) {
$timeframe = Config::get('system', 'poco_discovery_since');
if ($timeframe == 0) {
$timeframe = 30;
}
$updatedSince = date(DateTimeFormat::MYSQL, time() - $timeframe * 86400);
// Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3)
$url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
$success = false;
$curlResult = Network::curl($url);
if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
Logger::info("Fetch all global contacts from the server " . $server["nurl"]);
$data = json_decode($curlResult->getBody(), true);
if (!empty($data)) {
$success = self::discoverServer($data);
}
}
if (!$success && !empty($data) && Config::get('system', 'poco_discovery') >= self::USERS_GCONTACTS_FALLBACK) {
Logger::info("Fetch contacts from users of the server " . $server["nurl"]);
self::discoverServerUsers($data, $server);
}
}
$fields = ['last_poco_query' => DateTimeFormat::utcNow()];
DBA::update('gserver', $fields, ['nurl' => $server["nurl"]]);
return true;
} else {
// If the server hadn't replied correctly, then force a sanity check
GServer::check($server["url"], $server["network"], true);
// If we couldn't reach the server, we will try it some time later
$fields = ['last_poco_query' => DateTimeFormat::utcNow()];
DBA::update('gserver', $fields, ['nurl' => $server["nurl"]]);
return false;
}
}
public static function discover($complete = false)
{
// Update the server list
self::discoverFederation();
$no_of_queries = 5;
$requery_days = intval(Config::get('system', 'poco_requery_days'));
if ($requery_days == 0) {
$requery_days = 7;
}
$last_update = date('c', time() - (60 * 60 * 24 * $requery_days));
$gservers = q("SELECT `id`, `url`, `nurl`, `network`
FROM `gserver`
WHERE `last_contact` >= `last_failure`
AND `poco` != ''
AND `last_poco_query` < '%s'
ORDER BY RAND()", DBA::escape($last_update)
);
if (DBA::isResult($gservers)) {
foreach ($gservers as $gserver) {
if (!GServer::check($gserver['url'], $gserver['network'])) {
// The server is not reachable? Okay, then we will try it later
$fields = ['last_poco_query' => DateTimeFormat::utcNow()];
DBA::update('gserver', $fields, ['nurl' => $gserver['nurl']]);
continue;
}
Logger::log('Update directory from server ' . $gserver['url'] . ' with ID ' . $gserver['id'], Logger::DEBUG);
Worker::add(PRIORITY_LOW, 'DiscoverPoCo', 'update_server_directory', (int) $gserver['id']);
if (!$complete && ( --$no_of_queries == 0)) {
break;
}
}
}
}
private static function discoverServerUsers(array $data, array $server)
{
if (!isset($data['entry'])) {
return;
}
foreach ($data['entry'] as $entry) {
$username = '';
if (isset($entry['urls'])) {
foreach ($entry['urls'] as $url) {
if ($url['type'] == 'profile') {
$profile_url = $url['value'];
$path_array = explode('/', parse_url($profile_url, PHP_URL_PATH));
$username = end($path_array);
}
}
}
if ($username != '') {
Logger::log('Fetch contacts for the user ' . $username . ' from the server ' . $server['nurl'], Logger::DEBUG);
// Fetch all contacts from a given user from the other server
$url = $server['poco'] . '/' . $username . '/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation';
$curlResult = Network::curl($url);
if ($curlResult->isSuccess()) {
$data = json_decode($curlResult->getBody(), true);
if (!empty($data)) {
self::discoverServer($data, 3);
}
}
}
}
}
private static function discoverServer(array $data, $default_generation = 0)
{
if (empty($data['entry'])) {
return false;
}
$success = false;
foreach ($data['entry'] as $entry) {
$profile_url = '';
$profile_photo = '';
$connect_url = '';
$name = '';
$network = '';
$updated = DBA::NULL_DATETIME;
$location = '';
$about = '';
$keywords = '';
$gender = '';
$contact_type = -1;
$generation = $default_generation;
if (!empty($entry['displayName'])) {
$name = $entry['displayName'];
}
if (isset($entry['urls'])) {
foreach ($entry['urls'] as $url) {
if ($url['type'] == 'profile') {
$profile_url = $url['value'];
continue;
}
if ($url['type'] == 'webfinger') {
$connect_url = str_replace('acct:' , '', $url['value']);
continue;
}
}
}
if (isset($entry['photos'])) {
foreach ($entry['photos'] as $photo) {
if ($photo['type'] == 'profile') {
$profile_photo = $photo['value'];
continue;
}
}
}
if (isset($entry['updated'])) {
$updated = date(DateTimeFormat::MYSQL, strtotime($entry['updated']));
}
if (isset($entry['network'])) {
$network = $entry['network'];
}
if (isset($entry['currentLocation'])) {
$location = $entry['currentLocation'];
}
if (isset($entry['aboutMe'])) {
$about = HTML::toBBCode($entry['aboutMe']);
}
if (isset($entry['gender'])) {
$gender = $entry['gender'];
}
if (isset($entry['generation']) && ($entry['generation'] > 0)) {
$generation = ++$entry['generation'];
}
if (isset($entry['contactType']) && ($entry['contactType'] >= 0)) {
$contact_type = $entry['contactType'];
}
if (isset($entry['tags'])) {
foreach ($entry['tags'] as $tag) {
$keywords = implode(", ", $tag);
}
}
if ($generation > 0) {
$success = true;
Logger::log("Store profile ".$profile_url, Logger::DEBUG);
$gcontact = ["url" => $profile_url,
"name" => $name,
"network" => $network,
"photo" => $profile_photo,
"about" => $about,
"location" => $location,
"gender" => $gender,
"keywords" => $keywords,
"connect" => $connect_url,
"updated" => $updated,
"contact-type" => $contact_type,
"generation" => $generation];
try {
$gcontact = GContact::sanitize($gcontact);
GContact::update($gcontact);
} catch (Exception $e) {
Logger::log($e->getMessage(), Logger::DEBUG);
}
Logger::log("Done for profile ".$profile_url, Logger::DEBUG);
}
}
return $success;
}
}