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/Worker/DiscoverPoCo.php
*/
namespace Friendica\Worker;
use Friendica\Core\Cache;
use Friendica\Core\Config;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
use Friendica\Model\GContact;
use Friendica\Network\Probe;
use Friendica\Protocol\PortableContact;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Network;
use Friendica\Util\Strings;
class DiscoverPoCo
{
/// @todo Clean up this mess of a parameter hell and split it in several classes
public static function execute($command = '', $param1 = '', $param2 = '', $param3 = '', $param4 = '')
{
/*
This function can be called in these ways:
- dirsearch <search pattern>: Searches for "search pattern" in the directory. "search pattern" is url encoded.
- checkcontact: Updates gcontact entries
- suggestions: Discover other servers for their contacts.
- server <poco url>: Searches for the poco server list. "poco url" is base64 encoded.
- update_server: Frequently check the first 250 servers for vitality.
- update_server_directory: Discover the given server id for their contacts
- PortableContact::load: Load POCO data from a given POCO address
- check_profile: Update remote profile data
*/
$search = "";
$mode = 0;
if ($command == "dirsearch") {
$search = urldecode($param1);
$mode = 1;
} elseif ($command == "checkcontact") {
$mode = 2;
} elseif ($command == "suggestions") {
$mode = 3;
} elseif ($command == "server") {
$mode = 4;
} elseif ($command == "update_server") {
$mode = 5;
} elseif ($command == "update_server_directory") {
$mode = 6;
} elseif ($command == "load") {
$mode = 7;
} elseif ($command == "check_profile") {
$mode = 8;
} elseif ($command !== "") {
Logger::log("Unknown or missing parameter ".$command."\n");
return;
}
Logger::log('start '.$search);
if ($mode == 8) {
if ($param1 != "") {
PortableContact::lastUpdated($param1, true);
}
} elseif ($mode == 7) {
if (!empty($param4)) {
$url = $param4;
} else {
$url = '';
}
PortableContact::load(intval($param1), intval($param2), intval($param3), $url);
} elseif ($mode == 6) {
PortableContact::discoverSingleServer(intval($param1));
} elseif ($mode == 5) {
self::updateServer();
} elseif ($mode == 4) {
$server_url = $param1;
if ($server_url == "") {
return;
}
$server_url = filter_var($server_url, FILTER_SANITIZE_URL);
if (substr(Strings::normaliseLink($server_url), 0, 7) != "http://") {
return;
}
$result = "Checking server ".$server_url." - ";
$ret = PortableContact::checkServer($server_url);
if ($ret) {
$result .= "success";
} else {
$result .= "failed";
}
Logger::log($result, Logger::DEBUG);
} elseif ($mode == 3) {
GContact::updateSuggestions();
} elseif (($mode == 2) && Config::get('system', 'poco_completion')) {
self::discoverUsers();
} elseif (($mode == 1) && ($search != "") && Config::get('system', 'poco_local_search')) {
self::discoverDirectory($search);
self::gsSearchUser($search);
} elseif (($mode == 0) && ($search == "") && (Config::get('system', 'poco_discovery') > 0)) {
// Query Friendica and Hubzilla servers for their users
PortableContact::discover();
// Query GNU Social servers for their users ("statistics" addon has to be enabled on the GS server)
if (!Config::get('system', 'ostatus_disabled')) {
GContact::discoverGsUsers();
}
}
Logger::log('end '.$search);
return;
}
/**
* @brief Updates the first 250 servers
*
*/
private static function updateServer() {
$r = q("SELECT `url`, `created`, `last_failure`, `last_contact` FROM `gserver` ORDER BY rand()");
if (!DBA::isResult($r)) {
return;
}
$updated = 0;
foreach ($r AS $server) {
if (!PortableContact::updateNeeded($server["created"], "", $server["last_failure"], $server["last_contact"])) {
continue;
}
Logger::log('Update server status for server '.$server["url"], Logger::DEBUG);
Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", $server["url"]);
if (++$updated > 250) {
return;
}
}
}
private static function discoverUsers() {
Logger::log("Discover users", Logger::DEBUG);
$starttime = time();
$users = q("SELECT `url`, `created`, `updated`, `last_failure`, `last_contact`, `server_url`, `network` FROM `gcontact`
WHERE `last_contact` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
`last_failure` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
`network` IN ('%s', '%s', '%s', '%s', '') ORDER BY rand()",
DBA::escape(Protocol::DFRN), DBA::escape(Protocol::DIASPORA),
DBA::escape(Protocol::OSTATUS), DBA::escape(Protocol::FEED));
if (!$users) {
return;
}
$checked = 0;
foreach ($users AS $user) {
$urlparts = parse_url($user["url"]);
if (!isset($urlparts["scheme"])) {
DBA::update('gcontact', ['network' => Protocol::PHANTOM],
['nurl' => Strings::normaliseLink($user["url"])]);
continue;
}
if (in_array($urlparts["host"], ["twitter.com", "identi.ca"])) {
$networks = ["twitter.com" => Protocol::TWITTER, "identi.ca" => Protocol::PUMPIO];
DBA::update('gcontact', ['network' => $networks[$urlparts["host"]]],
['nurl' => Strings::normaliseLink($user["url"])]);
continue;
}
$server_url = PortableContact::detectServer($user["url"]);
$force_update = false;
if ($user["server_url"] != "") {
$force_update = (Strings::normaliseLink($user["server_url"]) != Strings::normaliseLink($server_url));
$server_url = $user["server_url"];
}
if ((($server_url == "") && ($user["network"] == Protocol::FEED)) || $force_update || PortableContact::checkServer($server_url, $user["network"])) {
Logger::log('Check profile '.$user["url"]);
Worker::add(PRIORITY_LOW, "DiscoverPoCo", "check_profile", $user["url"]);
if (++$checked > 100) {
return;
}
} else {
DBA::update('gcontact', ['last_failure' => DateTimeFormat::utcNow()],
['nurl' => Strings::normaliseLink($user["url"])]);
}
// Quit the loop after 3 minutes
if (time() > ($starttime + 180)) {
return;
}
}
}
private static function discoverDirectory($search) {
$data = Cache::get("dirsearch:".$search);
if (!is_null($data)) {
// Only search for the same item every 24 hours
if (time() < $data + (60 * 60 * 24)) {
Logger::log("Already searched for ".$search." in the last 24 hours", Logger::DEBUG);
return;
}
}
$x = Network::fetchUrl(get_server()."/lsearch?p=1&n=500&search=".urlencode($search));
$j = json_decode($x);
if (!empty($j->results)) {
foreach ($j->results as $jj) {
// Check if the contact already exists
$exists = q("SELECT `id`, `last_contact`, `last_failure`, `updated` FROM `gcontact` WHERE `nurl` = '%s'", Strings::normaliseLink($jj->url));
if (DBA::isResult($exists)) {
Logger::log("Profile ".$jj->url." already exists (".$search.")", Logger::DEBUG);
if (($exists[0]["last_contact"] < $exists[0]["last_failure"]) &&
($exists[0]["updated"] < $exists[0]["last_failure"])) {
continue;
}
// Update the contact
PortableContact::lastUpdated($jj->url);
continue;
}
$server_url = PortableContact::detectServer($jj->url);
if ($server_url != '') {
if (!PortableContact::checkServer($server_url)) {
Logger::log("Friendica server ".$server_url." doesn't answer.", Logger::DEBUG);
continue;
}
Logger::log("Friendica server ".$server_url." seems to be okay.", Logger::DEBUG);
}
$data = Probe::uri($jj->url);
if ($data["network"] == Protocol::DFRN) {
Logger::log("Profile ".$jj->url." is reachable (".$search.")", Logger::DEBUG);
Logger::log("Add profile ".$jj->url." to local directory (".$search.")", Logger::DEBUG);
if ($jj->tags != "") {
$data["keywords"] = $jj->tags;
}
$data["server_url"] = $data["baseurl"];
GContact::update($data);
} else {
Logger::log("Profile ".$jj->url." is not responding or no Friendica contact - but network ".$data["network"], Logger::DEBUG);
}
}
}
Cache::set("dirsearch:".$search, time(), Cache::DAY);
}
/**
* @brief Search for GNU Social user with gstools.org
*
* @param string $search User name
*/
private static function gsSearchUser($search) {
// Currently disabled, since the service isn't available anymore.
// It is not removed since I hope that there will be a successor.
return false;
$url = "http://gstools.org/api/users_search/".urlencode($search);
$curlResult = Network::curl($url);
if (!$curlResult->isSuccess()) {
return false;
}
$contacts = json_decode($curlResult->getBody());
if ($contacts->status == 'ERROR') {
return false;
}
/// @TODO AS is considered as a notation for constants (as they usually being written all upper-case)
/// @TODO find all those and convert to all lower-case which is a keyword then
foreach ($contacts->data AS $user) {
$contact = Probe::uri($user->site_address."/".$user->name);
if ($contact["network"] != Protocol::PHANTOM) {
$contact["about"] = $user->description;
GContact::update($contact);
}
}
}
}