friendica/include/socgraph.php

2446 lines
70 KiB
PHP

<?php
/**
* @file include/socgraph.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
*/
use Friendica\App;
use Friendica\Core\System;
use Friendica\Core\Config;
use Friendica\Core\Worker;
use Friendica\Database\DBM;
use Friendica\Network\Probe;
require_once 'include/datetime.php';
require_once 'include/network.php';
require_once 'include/html2bbcode.php';
require_once 'include/Contact.php';
require_once 'include/Photo.php';
/**
* @brief Fetch POCO data
*
* @param integer $cid Contact ID
* @param integer $uid User ID
* @param integer $zcid Global Contact ID
* @param integer $url POCO address that should be polled
*
* Given a contact-id (minimum), load the PortableContacts friend list for that contact,
* and add the entries to the gcontact (Global Contact) table, or update existing entries
* if anything (name or photo) has changed.
* We use normalised urls for comparison which ignore http vs https and www.domain vs domain
*
* Once the global contact is stored add (if necessary) the contact linkage which associates
* the given uid, cid to the global contact entry. There can be many uid/cid combinations
* pointing to the same global contact id.
*
*/
function poco_load($cid, $uid = 0, $zcid = 0, $url = null) {
// Call the function "poco_load_worker" via the worker
Worker::add(PRIORITY_LOW, "discover_poco", "poco_load", (int)$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 $url POCO address that should be polled
*
*/
function poco_load_worker($cid, $uid, $zcid, $url) {
$a = get_app();
if ($cid) {
if ((! $url) || (! $uid)) {
$r = q("select `poco`, `uid` from `contact` where `id` = %d limit 1",
intval($cid)
);
if (DBM::is_result($r)) {
$url = $r[0]['poco'];
$uid = $r[0]['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('poco_load: ' . $url, LOGGER_DEBUG);
$s = fetch_url($url);
logger('poco_load: returns ' . $s, LOGGER_DATA);
logger('poco_load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG);
if (($a->get_curl_code() > 299) || (! $s)) {
return;
}
$j = json_decode($s);
logger('poco_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 = NULL_DATE;
$location = '';
$about = '';
$keywords = '';
$gender = '';
$contact_type = -1;
$generation = 0;
$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)) {
$updated = date("Y-m-d H:i:s", strtotime($entry->updated));
}
if (isset($entry->network)) {
$network = $entry->network;
}
if (isset($entry->currentLocation)) {
$location = $entry->currentLocation;
}
if (isset($entry->aboutMe)) {
$about = html2bbcode($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 = array("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 {
$gcontact = sanitize_gcontact($gcontact);
$gcid = update_gcontact($gcontact);
link_gcontact($gcid, $uid, $cid, $zcid);
} catch (Exception $e) {
logger($e->getMessage(), LOGGER_DEBUG);
}
}
logger("poco_load: loaded $total entries",LOGGER_DEBUG);
q("DELETE FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `zcid` = %d AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY",
intval($cid),
intval($uid),
intval($zcid)
);
}
/**
* @brief Sanitize the given gcontact data
*
* @param array $gcontact array with gcontact data
* @throw Exception
*
* Generation:
* 0: No definition
* 1: Profiles on this server
* 2: Contacts of profiles on this server
* 3: Contacts of contacts of profiles on this server
* 4: ...
*
*/
function sanitize_gcontact($gcontact) {
if ($gcontact['url'] == "") {
throw new Exception('URL is empty');
}
$urlparts = parse_url($gcontact['url']);
if (!isset($urlparts["scheme"])) {
throw new Exception("This (".$gcontact['url'].") doesn't seem to be an url.");
}
if (in_array($urlparts["host"], array("www.facebook.com", "facebook.com", "twitter.com",
"identi.ca", "alpha.app.net"))) {
throw new Exception('Contact from a non federated network ignored. ('.$gcontact['url'].')');
}
// Don't store the statusnet connector as network
// We can't simply set this to NETWORK_OSTATUS since the connector could have fetched posts from friendica as well
if ($gcontact['network'] == NETWORK_STATUSNET) {
$gcontact['network'] = "";
}
// Assure that there are no parameter fragments in the profile url
if (in_array($gcontact['network'], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
$gcontact['url'] = clean_contact_url($gcontact['url']);
}
$alternate = poco_alternate_ostatus_url($gcontact['url']);
// The global contacts should contain the original picture, not the cached one
if (($gcontact['generation'] != 1) && stristr(normalise_link($gcontact['photo']), normalise_link(System::baseUrl()."/photo/"))) {
$gcontact['photo'] = "";
}
if (!isset($gcontact['network'])) {
$r = q("SELECT `network` FROM `contact` WHERE `uid` = 0 AND `nurl` = '%s' AND `network` != '' AND `network` != '%s' LIMIT 1",
dbesc(normalise_link($gcontact['url'])), dbesc(NETWORK_STATUSNET)
);
if (DBM::is_result($r)) {
$gcontact['network'] = $r[0]["network"];
}
if (($gcontact['network'] == "") || ($gcontact['network'] == NETWORK_OSTATUS)) {
$r = q("SELECT `network`, `url` FROM `contact` WHERE `uid` = 0 AND `alias` IN ('%s', '%s') AND `network` != '' AND `network` != '%s' LIMIT 1",
dbesc($gcontact['url']), dbesc(normalise_link($gcontact['url'])), dbesc(NETWORK_STATUSNET)
);
if (DBM::is_result($r)) {
$gcontact['network'] = $r[0]["network"];
}
}
}
$gcontact['server_url'] = '';
$gcontact['network'] = '';
$x = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
dbesc(normalise_link($gcontact['url']))
);
if (DBM::is_result($x)) {
if (!isset($gcontact['network']) && ($x[0]["network"] != NETWORK_STATUSNET)) {
$gcontact['network'] = $x[0]["network"];
}
if ($gcontact['updated'] <= NULL_DATE) {
$gcontact['updated'] = $x[0]["updated"];
}
if (!isset($gcontact['server_url']) && (normalise_link($x[0]["server_url"]) != normalise_link($x[0]["url"]))) {
$gcontact['server_url'] = $x[0]["server_url"];
}
if (!isset($gcontact['addr'])) {
$gcontact['addr'] = $x[0]["addr"];
}
}
if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']) || $alternate)
&& poco_reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)) {
$data = Probe::uri($gcontact['url']);
if ($data["network"] == NETWORK_PHANTOM) {
throw new Exception('Probing for URL '.$gcontact['url'].' failed');
}
$orig_profile = $gcontact['url'];
$gcontact["server_url"] = $data["baseurl"];
$gcontact = array_merge($gcontact, $data);
if ($alternate && ($gcontact['network'] == NETWORK_OSTATUS)) {
// Delete the old entry - if it exists
$r = q("SELECT `id` FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
if (DBM::is_result($r)) {
q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($orig_profile)));
q("DELETE FROM `glink` WHERE `gcid` = %d", intval($r[0]["id"]));
}
}
}
if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
throw new Exception('No name and photo for URL '.$gcontact['url']);
}
if (!in_array($gcontact['network'], array(NETWORK_DFRN, NETWORK_OSTATUS, NETWORK_DIASPORA))) {
throw new Exception('No federated network ('.$gcontact['network'].') detected for URL '.$gcontact['url']);
}
if (!isset($gcontact['server_url'])) {
// We check the server url to be sure that it is a real one
$server_url = poco_detect_server($gcontact['url']);
// We are now sure that it is a correct URL. So we use it in the future
if ($server_url != "") {
$gcontact['server_url'] = $server_url;
}
}
// The server URL doesn't seem to be valid, so we don't store it.
if (!poco_check_server($gcontact['server_url'], $gcontact['network'])) {
$gcontact['server_url'] = "";
}
return $gcontact;
}
/**
* @brief Link the gcontact entry with user, contact and global contact
*
* @param integer $gcid Global contact ID
* @param integer $cid Contact ID
* @param integer $uid User ID
* @param integer $zcid Global Contact ID
* *
*/
function link_gcontact($gcid, $uid = 0, $cid = 0, $zcid = 0) {
if ($gcid <= 0) {
return;
}
$r = q("SELECT * FROM `glink` WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d LIMIT 1",
intval($cid),
intval($uid),
intval($gcid),
intval($zcid)
);
if (!DBM::is_result($r)) {
q("INSERT INTO `glink` (`cid`, `uid`, `gcid`, `zcid`, `updated`) VALUES (%d, %d, %d, %d, '%s') ",
intval($cid),
intval($uid),
intval($gcid),
intval($zcid),
dbesc(datetime_convert())
);
} else {
q("UPDATE `glink` SET `updated` = '%s' WHERE `cid` = %d AND `uid` = %d AND `gcid` = %d AND `zcid` = %d",
dbesc(datetime_convert()),
intval($cid),
intval($uid),
intval($gcid),
intval($zcid)
);
}
}
function poco_reachable($profile, $server = "", $network = "", $force = false) {
if ($server == "") {
$server = poco_detect_server($profile);
}
if ($server == "") {
return true;
}
return poco_check_server($server, $network, $force);
}
function poco_detect_server($profile) {
// Try to detect the server path based upon some known standard paths
$server_url = "";
if ($server_url == "") {
$friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile);
if ($friendica != $profile) {
$server_url = $friendica;
$network = NETWORK_DFRN;
}
}
if ($server_url == "") {
$diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile);
if ($diaspora != $profile) {
$server_url = $diaspora;
$network = NETWORK_DIASPORA;
}
}
if ($server_url == "") {
$red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile);
if ($red != $profile) {
$server_url = $red;
$network = NETWORK_DIASPORA;
}
}
// Mastodon
if ($server_url == "") {
$mastodon = preg_replace("=(https?://)(.*)/users/(.*)=ism", "$1$2", $profile);
if ($mastodon != $profile) {
$server_url = $mastodon;
$network = NETWORK_OSTATUS;
}
}
// Numeric OStatus variant
if ($server_url == "") {
$ostatus = preg_replace("=(https?://)(.*)/user/(.*)=ism", "$1$2", $profile);
if ($ostatus != $profile) {
$server_url = $ostatus;
$network = NETWORK_OSTATUS;
}
}
// Wild guess
if ($server_url == "") {
$base = preg_replace("=(https?://)(.*?)/(.*)=ism", "$1$2", $profile);
if ($base != $profile) {
$server_url = $base;
$network = NETWORK_PHANTOM;
}
}
if ($server_url == "") {
return "";
}
$r = q("SELECT `id` FROM `gserver` WHERE `nurl` = '%s' AND `last_contact` > `last_failure`",
dbesc(normalise_link($server_url)));
if (DBM::is_result($r)) {
return $server_url;
}
// Fetch the host-meta to check if this really is a server
$serverret = z_fetch_url($server_url."/.well-known/host-meta");
if (!$serverret["success"]) {
return "";
}
return $server_url;
}
function poco_alternate_ostatus_url($url) {
return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
}
function poco_last_updated($profile, $force = false) {
$gcontacts = q("SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
dbesc(normalise_link($profile)));
if (!DBM::is_result($gcontacts)) {
return false;
}
$contact = array("url" => $profile);
if ($gcontacts[0]["created"] <= NULL_DATE) {
$contact['created'] = datetime_convert();
}
if ($force) {
$server_url = normalise_link(poco_detect_server($profile));
}
if (($server_url == '') && ($gcontacts[0]["server_url"] != "")) {
$server_url = $gcontacts[0]["server_url"];
}
if (!$force && (($server_url == '') || ($gcontacts[0]["server_url"] == $gcontacts[0]["nurl"]))) {
$server_url = normalise_link(poco_detect_server($profile));
}
if (!in_array($gcontacts[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_FEED, NETWORK_OSTATUS, ""))) {
logger("Profile ".$profile.": Network type ".$gcontacts[0]["network"]." can't be checked", LOGGER_DEBUG);
return false;
}
if ($server_url != "") {
if (!poco_check_server($server_url, $gcontacts[0]["network"], $force)) {
if ($force) {
q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
}
logger("Profile ".$profile.": Server ".$server_url." wasn't reachable.", LOGGER_DEBUG);
return false;
}
$contact['server_url'] = $server_url;
}
if (in_array($gcontacts[0]["network"], array("", NETWORK_FEED))) {
$server = q("SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
dbesc(normalise_link($server_url)));
if ($server) {
$contact['network'] = $server[0]["network"];
} else {
return false;
}
}
// noscrape is really fast so we don't cache the call.
if (($server_url != "") && ($gcontacts[0]["nick"] != "")) {
// Use noscrape if possible
$server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", dbesc(normalise_link($server_url)));
if ($server) {
$noscraperet = z_fetch_url($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
if ($noscraperet["success"] && ($noscraperet["body"] != "")) {
$noscrape = json_decode($noscraperet["body"], true);
if (is_array($noscrape)) {
$contact["network"] = $server[0]["network"];
if (isset($noscrape["fn"])) {
$contact["name"] = $noscrape["fn"];
}
if (isset($noscrape["comm"])) {
$contact["community"] = $noscrape["comm"];
}
if (isset($noscrape["tags"])) {
$keywords = implode(" ", $noscrape["tags"]);
if ($keywords != "") {
$contact["keywords"] = $keywords;
}
}
$location = formatted_location($noscrape);
if ($location) {
$contact["location"] = $location;
}
if (isset($noscrape["dfrn-notify"])) {
$contact["notify"] = $noscrape["dfrn-notify"];
}
// Remove all fields that are not present in the gcontact table
unset($noscrape["fn"]);
unset($noscrape["key"]);
unset($noscrape["homepage"]);
unset($noscrape["comm"]);
unset($noscrape["tags"]);
unset($noscrape["locality"]);
unset($noscrape["region"]);
unset($noscrape["country-name"]);
unset($noscrape["contacts"]);
unset($noscrape["dfrn-request"]);
unset($noscrape["dfrn-confirm"]);
unset($noscrape["dfrn-notify"]);
unset($noscrape["dfrn-poll"]);
// Set the date of the last contact
/// @todo By now the function "update_gcontact" doesn't work with this field
//$contact["last_contact"] = datetime_convert();
$contact = array_merge($contact, $noscrape);
update_gcontact($contact);
if (trim($noscrape["updated"]) != "") {
q("UPDATE `gcontact` SET `last_contact` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
logger("Profile ".$profile." was last updated at ".$noscrape["updated"]." (noscrape)", LOGGER_DEBUG);
return $noscrape["updated"];
}
}
}
}
}
// If we only can poll the feed, then we only do this once a while
if (!$force && !poco_do_update($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"], $gcontacts[0]["last_contact"])) {
logger("Profile ".$profile." was last updated at ".$gcontacts[0]["updated"]." (cached)", LOGGER_DEBUG);
update_gcontact($contact);
return $gcontacts[0]["updated"];
}
$data = Probe::uri($profile);
// Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711)
// Then check the other link and delete this one
if (($data["network"] == NETWORK_OSTATUS) && poco_alternate_ostatus_url($profile) &&
(normalise_link($profile) == normalise_link($data["alias"])) &&
(normalise_link($profile) != normalise_link($data["url"]))) {
// Delete the old entry
q("DELETE FROM `gcontact` WHERE `nurl` = '%s'", dbesc(normalise_link($profile)));
q("DELETE FROM `glink` WHERE `gcid` = %d", intval($gcontacts[0]["id"]));
$gcontact = array_merge($gcontacts[0], $data);
$gcontact["server_url"] = $data["baseurl"];
try {
$gcontact = sanitize_gcontact($gcontact);
update_gcontact($gcontact);
poco_last_updated($data["url"], $force);
} catch (Exception $e) {
logger($e->getMessage(), LOGGER_DEBUG);
}
logger("Profile ".$profile." was deleted", LOGGER_DEBUG);
return false;
}
if (($data["poll"] == "") || (in_array($data["network"], array(NETWORK_FEED, NETWORK_PHANTOM)))) {
q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
logger("Profile ".$profile." wasn't reachable (profile)", LOGGER_DEBUG);
return false;
}
$contact = array_merge($contact, $data);
$contact["server_url"] = $data["baseurl"];
update_gcontact($contact);
$feedret = z_fetch_url($data["poll"]);
if (!$feedret["success"]) {
q("UPDATE `gcontact` SET `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($profile)));
logger("Profile ".$profile." wasn't reachable (no feed)", LOGGER_DEBUG);
return false;
}
$doc = new DOMDocument();
@$doc->loadXML($feedret["body"]);
$xpath = new DomXPath($doc);
$xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
$entries = $xpath->query('/atom:feed/atom:entry');
$last_updated = "";
foreach ($entries as $entry) {
$published = $xpath->query('atom:published/text()', $entry)->item(0)->nodeValue;
$updated = $xpath->query('atom:updated/text()', $entry)->item(0)->nodeValue;
if ($last_updated < $published)
$last_updated = $published;
if ($last_updated < $updated)
$last_updated = $updated;
}
// Maybe there aren't any entries. Then check if it is a valid feed
if ($last_updated == "") {
if ($xpath->query('/atom:feed')->length > 0) {
$last_updated = NULL_DATE;
}
}
q("UPDATE `gcontact` SET `updated` = '%s', `last_contact` = '%s' WHERE `nurl` = '%s'",
dbesc(DBM::date($last_updated)), dbesc(DBM::date()), dbesc(normalise_link($profile)));
if (($gcontacts[0]["generation"] == 0)) {
q("UPDATE `gcontact` SET `generation` = 9 WHERE `nurl` = '%s'",
dbesc(normalise_link($profile)));
}
logger("Profile ".$profile." was last updated at ".$last_updated, LOGGER_DEBUG);
return($last_updated);
}
function poco_do_update($created, $updated, $last_failure, $last_contact) {
$now = strtotime(datetime_convert());
if ($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 - $failure_time) < (60 * 60 * 24 * 30))) {
return false;
}
return true;
}
function poco_to_boolean($val) {
if (($val == "true") || ($val == 1)) {
return true;
} elseif (($val == "false") || ($val == 0)) {
return false;
}
return $val;
}
/**
* @brief Detect server type (Hubzilla or Friendica) via the poco data
*
* @param object $data POCO data
* @return array Server data
*/
function poco_detect_poco_data($data) {
$server = false;
if (!isset($data->entry)) {
return false;
}
if (count($data->entry) == 0) {
return false;
}
if (!isset($data->entry[0]->urls)) {
return false;
}
if (count($data->entry[0]->urls) == 0) {
return false;
}
foreach ($data->entry[0]->urls as $url) {
if ($url->type == 'zot') {
$server = array();
$server["platform"] = 'Hubzilla';
$server["network"] = NETWORK_DIASPORA;
return $server;
}
}
return false;
}
/**
* @brief Detect server type by using the nodeinfo data
*
* @param string $server_url address of the server
* @return array Server data
*/
function poco_fetch_nodeinfo($server_url) {
$serverret = z_fetch_url($server_url."/.well-known/nodeinfo");
if (!$serverret["success"]) {
return false;
}
$nodeinfo = json_decode($serverret['body']);
if (!is_object($nodeinfo)) {
return false;
}
if (!is_array($nodeinfo->links)) {
return false;
}
$nodeinfo_url = '';
foreach ($nodeinfo->links as $link) {
if ($link->rel == 'http://nodeinfo.diaspora.software/ns/schema/1.0') {
$nodeinfo_url = $link->href;
}
}
if ($nodeinfo_url == '') {
return false;
}
$serverret = z_fetch_url($nodeinfo_url);
if (!$serverret["success"]) {
return false;
}
$nodeinfo = json_decode($serverret['body']);
if (!is_object($nodeinfo)) {
return false;
}
$server = array();
$server['register_policy'] = REGISTER_CLOSED;
if (is_bool($nodeinfo->openRegistrations) && $nodeinfo->openRegistrations) {
$server['register_policy'] = REGISTER_OPEN;
}
if (is_object($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", $server['version']);
}
}
if (is_object($nodeinfo->metadata)) {
if (isset($nodeinfo->metadata->nodeName)) {
$server['site_name'] = $nodeinfo->metadata->nodeName;
}
}
$diaspora = false;
$friendica = false;
$gnusocial = false;
if (is_array($nodeinfo->protocols->inbound)) {
foreach ($nodeinfo->protocols->inbound as $inbound) {
if ($inbound == 'diaspora') {
$diaspora = true;
}
if ($inbound == 'friendica') {
$friendica = true;
}
if ($inbound == 'gnusocial') {
$gnusocial = true;
}
}
}
if ($gnusocial) {
$server['network'] = NETWORK_OSTATUS;
}
if ($diaspora) {
$server['network'] = NETWORK_DIASPORA;
}
if ($friendica) {
$server['network'] = NETWORK_DFRN;
}
if (!$server) {
return false;
}
return $server;
}
/**
* @brief Detect server type (Hubzilla or Friendica) via the front page body
*
* @param string $body Front page of the server
* @return array Server data
*/
function poco_detect_server_type($body) {
$server = false;
$doc = new DOMDocument();
@$doc->loadHTML($body);
$xpath = new DomXPath($doc);
$list = $xpath->query("//meta[@name]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length) {
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
}
if ($attr['name'] == 'generator') {
$version_part = explode(" ", $attr['content']);
if (count($version_part) == 2) {
if (in_array($version_part[0], array("Friendika", "Friendica"))) {
$server = array();
$server["platform"] = $version_part[0];
$server["version"] = $version_part[1];
$server["network"] = NETWORK_DFRN;
}
}
}
}
if (!$server) {
$list = $xpath->query("//meta[@property]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length) {
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
}
if ($attr['property'] == 'generator' && in_array($attr['content'], array("hubzilla", "BlaBlaNet"))) {
$server = array();
$server["platform"] = $attr['content'];
$server["version"] = "";
$server["network"] = NETWORK_DIASPORA;
}
}
}
if (!$server) {
return false;
}
$server["site_name"] = $xpath->evaluate($element."//head/title/text()", $context)->item(0)->nodeValue;
return $server;
}
function poco_check_server($server_url, $network = "", $force = false) {
// Unify the server address
$server_url = trim($server_url, "/");
$server_url = str_replace("/index.php", "", $server_url);
if ($server_url == "") {
return false;
}
$servers = q("SELECT * FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
if (DBM::is_result($servers)) {
if ($servers[0]["created"] <= NULL_DATE) {
q("UPDATE `gserver` SET `created` = '%s' WHERE `nurl` = '%s'",
dbesc(datetime_convert()), dbesc(normalise_link($server_url)));
}
$poco = $servers[0]["poco"];
$noscrape = $servers[0]["noscrape"];
if ($network == "") {
$network = $servers[0]["network"];
}
$last_contact = $servers[0]["last_contact"];
$last_failure = $servers[0]["last_failure"];
$version = $servers[0]["version"];
$platform = $servers[0]["platform"];
$site_name = $servers[0]["site_name"];
$info = $servers[0]["info"];
$register_policy = $servers[0]["register_policy"];
if (!$force && !poco_do_update($servers[0]["created"], "", $last_failure, $last_contact)) {
logger("Use cached data for server ".$server_url, LOGGER_DEBUG);
return ($last_contact >= $last_failure);
}
} else {
$poco = "";
$noscrape = "";
$version = "";
$platform = "";
$site_name = "";
$info = "";
$register_policy = -1;
$last_contact = NULL_DATE;
$last_failure = NULL_DATE;
}
logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$servers[0]["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG);
$failure = false;
$possible_failure = false;
$orig_last_failure = $last_failure;
$orig_last_contact = $last_contact;
// Check if the page is accessible via SSL.
$orig_server_url = $server_url;
$server_url = str_replace("http://", "https://", $server_url);
// We set the timeout to 20 seconds since this operation should be done in no time if the server was vital
$serverret = z_fetch_url($server_url."/.well-known/host-meta", false, $redirects, array('timeout' => 20));
// Quit if there is a timeout.
// But we want to make sure to only quit if we are mostly sure that this server url fits.
if (DBM::is_result($servers) && ($orig_server_url == $server_url) &&
($serverret['errno'] == CURLE_OPERATION_TIMEDOUT)) {
logger("Connection to server ".$server_url." timed out.", LOGGER_DEBUG);
dba::update('gserver', array('last_failure' => datetime_convert()), array('nurl' => normalise_link($server_url)));
return false;
}
// Maybe the page is unencrypted only?
$xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
if (!$serverret["success"] || ($serverret["body"] == "") || (@sizeof($xmlobj) == 0) || !is_object($xmlobj)) {
$server_url = str_replace("https://", "http://", $server_url);
// We set the timeout to 20 seconds since this operation should be done in no time if the server was vital
$serverret = z_fetch_url($server_url."/.well-known/host-meta", false, $redirects, array('timeout' => 20));
// Quit if there is a timeout
if ($serverret['errno'] == CURLE_OPERATION_TIMEDOUT) {
logger("Connection to server ".$server_url." timed out.", LOGGER_DEBUG);
dba::update('gserver', array('last_failure' => datetime_convert()), array('nurl' => normalise_link($server_url)));
return false;
}
$xmlobj = @simplexml_load_string($serverret["body"],'SimpleXMLElement',0, "http://docs.oasis-open.org/ns/xri/xrd-1.0");
}
if (!$serverret["success"] || ($serverret["body"] == "") || (sizeof($xmlobj) == 0) || !is_object($xmlobj)) {
// Workaround for bad configured servers (known nginx problem)
if (!in_array($serverret["debug"]["http_code"], array("403", "404"))) {
$failure = true;
}
$possible_failure = true;
}
// If the server has no possible failure we reset the cached data
if (!$possible_failure) {
$version = "";
$platform = "";
$site_name = "";
$info = "";
$register_policy = -1;
}
// Look for poco
if (!$failure) {
$serverret = z_fetch_url($server_url."/poco");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->totalResults)) {
$poco = $server_url."/poco";
$server = poco_detect_poco_data($data);
if ($server) {
$platform = $server['platform'];
$network = $server['network'];
$version = '';
$site_name = '';
}
}
}
}
if (!$failure) {
// Test for Diaspora, Hubzilla, Mastodon or older Friendica servers
$serverret = z_fetch_url($server_url);
if (!$serverret["success"] || ($serverret["body"] == "")) {
$failure = true;
} else {
$server = poco_detect_server_type($serverret["body"]);
if ($server) {
$platform = $server['platform'];
$network = $server['network'];
$version = $server['version'];
$site_name = $server['site_name'];
}
$lines = explode("\n",$serverret["header"]);
if (count($lines)) {
foreach($lines as $line) {
$line = trim($line);
if (stristr($line,'X-Diaspora-Version:')) {
$platform = "Diaspora";
$version = trim(str_replace("X-Diaspora-Version:", "", $line));
$version = trim(str_replace("x-diaspora-version:", "", $version));
$network = NETWORK_DIASPORA;
$versionparts = explode("-", $version);
$version = $versionparts[0];
}
if (stristr($line,'Server: Mastodon')) {
$platform = "Mastodon";
$network = NETWORK_OSTATUS;
}
}
}
}
}
if (!$failure && ($poco == "")) {
// Test for Statusnet
// Will also return data for Friendica and GNU Social - but it will be overwritten later
// The "not implemented" is a special treatment for really, really old Friendica versions
$serverret = z_fetch_url($server_url."/api/statusnet/version.json");
if ($serverret["success"] && ($serverret["body"] != '{"error":"not implemented"}') &&
($serverret["body"] != '') && (strlen($serverret["body"]) < 30)) {
$platform = "StatusNet";
// Remove junk that some GNU Social servers return
$version = str_replace(chr(239).chr(187).chr(191), "", $serverret["body"]);
$version = trim($version, '"');
$network = NETWORK_OSTATUS;
}
// Test for GNU Social
$serverret = z_fetch_url($server_url."/api/gnusocial/version.json");
if ($serverret["success"] && ($serverret["body"] != '{"error":"not implemented"}') &&
($serverret["body"] != '') && (strlen($serverret["body"]) < 30)) {
$platform = "GNU Social";
// Remove junk that some GNU Social servers return
$version = str_replace(chr(239).chr(187).chr(191), "", $serverret["body"]);
$version = trim($version, '"');
$network = NETWORK_OSTATUS;
}
// Test for Mastodon
$orig_version = $version;
$serverret = z_fetch_url($server_url."/api/v1/instance");
if ($serverret["success"] && ($serverret["body"] != '')) {
$data = json_decode($serverret["body"]);
if (isset($data->version)) {
$platform = "Mastodon";
$version = $data->version;
$site_name = $data->title;
$info = $data->description;
$network = NETWORK_OSTATUS;
}
}
if (strstr($orig_version.$version, 'Pleroma')) {
$platform = 'Pleroma';
$version = trim(str_replace('Pleroma', '', $version));
}
}
if (!$failure) {
// Test for Hubzilla and Red
$serverret = z_fetch_url($server_url."/siteinfo.json");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->url)) {
$platform = $data->platform;
$version = $data->version;
$network = NETWORK_DIASPORA;
}
if (!empty($data->site_name)) {
$site_name = $data->site_name;
}
switch ($data->register_policy) {
case "REGISTER_OPEN":
$register_policy = REGISTER_OPEN;
break;
case "REGISTER_APPROVE":
$register_policy = REGISTER_APPROVE;
break;
case "REGISTER_CLOSED":
default:
$register_policy = REGISTER_CLOSED;
break;
}
} else {
// Test for Hubzilla, Redmatrix or Friendica
$serverret = z_fetch_url($server_url."/api/statusnet/config.json");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->site->server)) {
if (isset($data->site->platform)) {
$platform = $data->site->platform->PLATFORM_NAME;
$version = $data->site->platform->STD_VERSION;
$network = NETWORK_DIASPORA;
}
if (isset($data->site->BlaBlaNet)) {
$platform = $data->site->BlaBlaNet->PLATFORM_NAME;
$version = $data->site->BlaBlaNet->STD_VERSION;
$network = NETWORK_DIASPORA;
}
if (isset($data->site->hubzilla)) {
$platform = $data->site->hubzilla->PLATFORM_NAME;
$version = $data->site->hubzilla->RED_VERSION;
$network = NETWORK_DIASPORA;
}
if (isset($data->site->redmatrix)) {
if (isset($data->site->redmatrix->PLATFORM_NAME)) {
$platform = $data->site->redmatrix->PLATFORM_NAME;
} elseif (isset($data->site->redmatrix->RED_PLATFORM)) {
$platform = $data->site->redmatrix->RED_PLATFORM;
}
$version = $data->site->redmatrix->RED_VERSION;
$network = NETWORK_DIASPORA;
}
if (isset($data->site->friendica)) {
$platform = $data->site->friendica->FRIENDICA_PLATFORM;
$version = $data->site->friendica->FRIENDICA_VERSION;
$network = NETWORK_DFRN;
}
$site_name = $data->site->name;
$data->site->closed = poco_to_boolean($data->site->closed);
$data->site->private = poco_to_boolean($data->site->private);
$data->site->inviteonly = poco_to_boolean($data->site->inviteonly);
if (!$data->site->closed && !$data->site->private and $data->site->inviteonly) {
$register_policy = REGISTER_APPROVE;
} elseif (!$data->site->closed && !$data->site->private) {
$register_policy = REGISTER_OPEN;
} else {
$register_policy = REGISTER_CLOSED;
}
}
}
}
}
// Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix
if (!$failure) {
$serverret = z_fetch_url($server_url."/statistics.json");
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->version)) {
$version = $data->version;
// Version numbers on statistics.json are presented with additional info, e.g.:
// 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191.
$version = preg_replace("=(.+)-(.{4,})=ism", "$1", $version);
}
if (!empty($data->name)) {
$site_name = $data->name;
}
if (!empty($data->network)) {
$platform = $data->network;
}
if ($platform == "Diaspora") {
$network = NETWORK_DIASPORA;
}
if ($data->registrations_open) {
$register_policy = REGISTER_OPEN;
} else {
$register_policy = REGISTER_CLOSED;
}
}
}
// Query nodeinfo. Working for (at least) Diaspora and Friendica.
if (!$failure) {
$server = poco_fetch_nodeinfo($server_url);
if ($server) {
$register_policy = $server['register_policy'];
if (isset($server['platform'])) {
$platform = $server['platform'];
}
if (isset($server['network'])) {
$network = $server['network'];
}
if (isset($server['version'])) {
$version = $server['version'];
}
if (isset($server['site_name'])) {
$site_name = $server['site_name'];
}
}
}
// Check for noscrape
// Friendica servers could be detected as OStatus servers
if (!$failure && in_array($network, array(NETWORK_DFRN, NETWORK_OSTATUS))) {
$serverret = z_fetch_url($server_url."/friendica/json");
if (!$serverret["success"]) {
$serverret = z_fetch_url($server_url."/friendika/json");
}
if ($serverret["success"]) {
$data = json_decode($serverret["body"]);
if (isset($data->version)) {
$network = NETWORK_DFRN;
$noscrape = $data->no_scrape_url;
$version = $data->version;
$site_name = $data->site_name;
$info = $data->info;
$register_policy_str = $data->register_policy;
$platform = $data->platform;
switch ($register_policy_str) {
case "REGISTER_CLOSED":
$register_policy = REGISTER_CLOSED;
break;
case "REGISTER_APPROVE":
$register_policy = REGISTER_APPROVE;
break;
case "REGISTER_OPEN":
$register_policy = REGISTER_OPEN;
break;
}
}
}
}
if ($possible_failure && !$failure) {
$failure = true;
}
if ($failure) {
$last_contact = $orig_last_contact;
$last_failure = datetime_convert();
} else {
$last_contact = datetime_convert();
$last_failure = $orig_last_failure;
}
if (($last_contact <= $last_failure) && !$failure) {
logger("Server ".$server_url." seems to be alive, but last contact wasn't set - could be a bug", LOGGER_DEBUG);
} elseif (($last_contact >= $last_failure) && $failure) {
logger("Server ".$server_url." seems to be dead, but last failure wasn't set - could be a bug", LOGGER_DEBUG);
}
// Check again if the server exists
$servers = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
$version = strip_tags($version);
$site_name = strip_tags($site_name);
$info = strip_tags($info);
$platform = strip_tags($platform);
if ($servers) {
q("UPDATE `gserver` SET `url` = '%s', `version` = '%s', `site_name` = '%s', `info` = '%s', `register_policy` = %d, `poco` = '%s', `noscrape` = '%s',
`network` = '%s', `platform` = '%s', `last_contact` = '%s', `last_failure` = '%s' WHERE `nurl` = '%s'",
dbesc($server_url),
dbesc($version),
dbesc($site_name),
dbesc($info),
intval($register_policy),
dbesc($poco),
dbesc($noscrape),
dbesc($network),
dbesc($platform),
dbesc($last_contact),
dbesc($last_failure),
dbesc(normalise_link($server_url))
);
} elseif (!$failure) {
q("INSERT INTO `gserver` (`url`, `nurl`, `version`, `site_name`, `info`, `register_policy`, `poco`, `noscrape`, `network`, `platform`, `created`, `last_contact`, `last_failure`)
VALUES ('%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s')",
dbesc($server_url),
dbesc(normalise_link($server_url)),
dbesc($version),
dbesc($site_name),
dbesc($info),
intval($register_policy),
dbesc($poco),
dbesc($noscrape),
dbesc($network),
dbesc($platform),
dbesc(datetime_convert()),
dbesc($last_contact),
dbesc($last_failure),
dbesc(datetime_convert())
);
}
logger("End discovery for server " . $server_url, LOGGER_DEBUG);
return !$failure;
}
function count_common_friends($uid, $cid) {
$r = q("SELECT count(*) as `total`
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d ) ",
intval($cid),
intval($uid),
intval($uid),
intval($cid)
);
// logger("count_common_friends: $uid $cid {$r[0]['total']}");
if (DBM::is_result($r)) {
return $r[0]['total'];
}
return 0;
}
function common_friends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false) {
if ($shuffle) {
$sql_extra = " order by rand() ";
} else {
$sql_extra = " order by `gcontact`.`name` asc ";
}
$r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
FROM `glink`
INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
$sql_extra LIMIT %d, %d",
intval($cid),
intval($uid),
intval($uid),
intval($cid),
intval($start),
intval($limit)
);
/// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
return $r;
}
function count_common_friends_zcid($uid, $zcid) {
$r = q("SELECT count(*) as `total`
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`zcid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 ) ",
intval($zcid),
intval($uid)
);
if (DBM::is_result($r)) {
return $r[0]['total'];
}
return 0;
}
function common_friends_zcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false) {
if ($shuffle) {
$sql_extra = " order by rand() ";
} else {
$sql_extra = " order by `gcontact`.`name` asc ";
}
$r = q("SELECT `gcontact`.*
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`zcid` = %d
and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 )
$sql_extra limit %d, %d",
intval($zcid),
intval($uid),
intval($start),
intval($limit)
);
/// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
return $r;
}
function count_all_friends($uid, $cid) {
$r = q("SELECT count(*) as `total`
FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
where `glink`.`cid` = %d and `glink`.`uid` = %d AND
((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
intval($cid),
intval($uid)
);
if (DBM::is_result($r)) {
return $r[0]['total'];
}
return 0;
}
function all_friends($uid, $cid, $start = 0, $limit = 80) {
$r = q("SELECT `gcontact`.*, `contact`.`id` AS `cid`
FROM `glink`
INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
intval($uid),
intval($cid),
intval($uid),
intval($start),
intval($limit)
);
/// @TODO Check all calling-findings of this function if they properly use DBM::is_result()
return $r;
}
function suggestion_query($uid, $start = 0, $limit = 80) {
if (!$uid) {
return array();
}
/*
* Uncommented because the result of the queries are to big to store it in the cache.
* We need to decide if we want to change the db column type or if we want to delete it.
*/
//$list = Cache::get("suggestion_query:".$uid.":".$start.":".$limit);
//if (!is_null($list)) {
// return $list;
//}
$network = array(NETWORK_DFRN);
if (Config::get('system','diaspora_enabled')) {
$network[] = NETWORK_DIASPORA;
}
if (!Config::get('system','ostatus_disabled')) {
$network[] = NETWORK_OSTATUS;
}
$sql_network = implode("', '", $network);
$sql_network = "'".$sql_network."'";
/// @todo This query is really slow
// By now we cache the data for five minutes
$r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
AND `gcontact`.`updated` >= '%s'
AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
AND `gcontact`.`network` IN (%s)
GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
intval($uid),
intval($uid),
intval($uid),
intval($uid),
dbesc(NULL_DATE),
$sql_network,
intval($start),
intval($limit)
);
if (DBM::is_result($r) && count($r) >= ($limit -1)) {
/*
* Uncommented because the result of the queries are to big to store it in the cache.
* We need to decide if we want to change the db column type or if we want to delete it.
*/
//Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $r, CACHE_FIVE_MINUTES);
return $r;
}
$r2 = q("SELECT gcontact.* FROM gcontact
INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
AND `gcontact`.`updated` >= '%s'
AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
AND `gcontact`.`network` IN (%s)
ORDER BY rand() LIMIT %d, %d",
intval($uid),
intval($uid),
intval($uid),
dbesc(NULL_DATE),
$sql_network,
intval($start),
intval($limit)
);
$list = array();
foreach ($r2 as $suggestion) {
$list[$suggestion["nurl"]] = $suggestion;
}
foreach ($r as $suggestion) {
$list[$suggestion["nurl"]] = $suggestion;
}
while (sizeof($list) > ($limit)) {
array_pop($list);
}
/*
* Uncommented because the result of the queries are to big to store it in the cache.
* We need to decide if we want to change the db column type or if we want to delete it.
*/
//Cache::set("suggestion_query:".$uid.":".$start.":".$limit, $list, CACHE_FIVE_MINUTES);
return $list;
}
function update_suggestions() {
$a = get_app();
$done = array();
/// @TODO Check if it is really neccessary to poll the own server
poco_load(0, 0, 0, System::baseUrl() . '/poco');
$done[] = System::baseUrl() . '/poco';
if (strlen(Config::get('system','directory'))) {
$x = fetch_url(get_server()."/pubsites");
if ($x) {
$j = json_decode($x);
if ($j->entries) {
foreach ($j->entries as $entry) {
poco_check_server($entry->url);
$url = $entry->url . '/poco';
if (! in_array($url,$done)) {
poco_load(0,0,0,$entry->url . '/poco');
}
}
}
}
}
// Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
$r = q("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN ('%s', '%s')",
dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA)
);
if (DBM::is_result($r)) {
foreach ($r as $rr) {
$base = substr($rr['poco'],0,strrpos($rr['poco'],'/'));
if (! in_array($base,$done)) {
poco_load(0,0,0,$base);
}
}
}
}
/**
* @brief Fetch server list from remote servers and adds them when they are new.
*
* @param string $poco URL to the POCO endpoint
*/
function poco_fetch_serverlist($poco) {
$serverret = z_fetch_url($poco."/@server");
if (!$serverret["success"]) {
return;
}
$serverlist = json_decode($serverret['body']);
if (!is_array($serverlist)) {
return;
}
foreach ($serverlist as $server) {
$server_url = str_replace("/index.php", "", $server->url);
$r = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", dbesc(normalise_link($server_url)));
if (!DBM::is_result($r)) {
logger("Call server check for server ".$server_url, LOGGER_DEBUG);
Worker::add(PRIORITY_LOW, "discover_poco", "server", $server_url);
}
}
}
function poco_discover_federation() {
$last = Config::get('poco','last_federation_discovery');
if ($last) {
$next = $last + (24 * 60 * 60);
if ($next > time()) {
return;
}
}
// Discover Friendica, Hubzilla and Diaspora servers
$serverdata = fetch_url("http://the-federation.info/pods.json");
if ($serverdata) {
$servers = json_decode($serverdata);
foreach ($servers->pods as $server) {
Worker::add(PRIORITY_LOW, "discover_poco", "server", "https://".$server->host);
}
}
// Disvover Mastodon servers
if (!Config::get('system','ostatus_disabled')) {
$serverdata = fetch_url("https://instances.mastodon.xyz/instances.json");
if ($serverdata) {
$servers = json_decode($serverdata);
foreach ($servers as $server) {
$url = (is_null($server->https_score) ? 'http' : 'https').'://'.$server->name;
Worker::add(PRIORITY_LOW, "discover_poco", "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/";
// $result = z_fetch_url($serverdata);
// if ($result["success"]) {
// $servers = json_decode($result["body"]);
// foreach($servers->data as $server)
// poco_check_server($server->instance_address);
// }
//}
Config::set('poco','last_federation_discovery', time());
}
function poco_discover_single_server($id) {
$r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `id` = %d", intval($id));
if (!DBM::is_result($r)) {
return false;
}
$server = $r[0];
// Discover new servers out there (Works from Friendica version 3.5.2)
poco_fetch_serverlist($server["poco"]);
// Fetch all users from the other server
$url = $server["poco"]."/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation";
logger("Fetch all users from the server ".$server["url"], LOGGER_DEBUG);
$retdata = z_fetch_url($url);
if ($retdata["success"]) {
$data = json_decode($retdata["body"]);
poco_discover_server($data, 2);
if (Config::get('system','poco_discovery') > 1) {
$timeframe = Config::get('system','poco_discovery_since');
if ($timeframe == 0) {
$timeframe = 30;
}
$updatedSince = date("Y-m-d H:i:s", 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;
$retdata = z_fetch_url($url);
if ($retdata["success"]) {
logger("Fetch all global contacts from the server ".$server["nurl"], LOGGER_DEBUG);
$success = poco_discover_server(json_decode($retdata["body"]));
}
if (!$success && (Config::get('system','poco_discovery') > 2)) {
logger("Fetch contacts from users of the server ".$server["nurl"], LOGGER_DEBUG);
poco_discover_server_users($data, $server);
}
}
q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
return true;
} else {
// If the server hadn't replied correctly, then force a sanity check
poco_check_server($server["url"], $server["network"], true);
// If we couldn't reach the server, we will try it some time later
q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
return false;
}
}
function poco_discover($complete = false) {
// Update the server list
poco_discover_federation();
$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));
$r = q("SELECT `id`, `url`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", dbesc($last_update));
if (DBM::is_result($r)) {
foreach ($r as $server) {
if (!poco_check_server($server["url"], $server["network"])) {
// The server is not reachable? Okay, then we will try it later
q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
continue;
}
logger('Update directory from server '.$server['url'].' with ID '.$server['id'], LOGGER_DEBUG);
Worker::add(PRIORITY_LOW, "discover_poco", "update_server_directory", (int)$server['id']);
if (!$complete && (--$no_of_queries == 0)) {
break;
}
}
}
}
function poco_discover_server_users($data, $server) {
if (!isset($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;
$urlparts = parse_url($profile_url);
$username = end(explode("/", $urlparts["path"]));
}
}
}
if ($username != "") {
logger("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";
$retdata = z_fetch_url($url);
if ($retdata["success"]) {
poco_discover_server(json_decode($retdata["body"]), 3);
}
}
}
}
function poco_discover_server($data, $default_generation = 0) {
if (!isset($data->entry) || !count($data->entry)) {
return false;
}
$success = false;
foreach ($data->entry as $entry) {
$profile_url = '';
$profile_photo = '';
$connect_url = '';
$name = '';
$network = '';
$updated = NULL_DATE;
$location = '';
$about = '';
$keywords = '';
$gender = '';
$contact_type = -1;
$generation = $default_generation;
$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)) {
$updated = date("Y-m-d H:i:s", strtotime($entry->updated));
}
if (isset($entry->network)) {
$network = $entry->network;
}
if (isset($entry->currentLocation)) {
$location = $entry->currentLocation;
}
if (isset($entry->aboutMe)) {
$about = html2bbcode($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) {
$success = true;
logger("Store profile ".$profile_url, LOGGER_DEBUG);
$gcontact = array("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 {
$gcontact = sanitize_gcontact($gcontact);
update_gcontact($gcontact);
} catch (Exception $e) {
logger($e->getMessage(), LOGGER_DEBUG);
}
logger("Done for profile ".$profile_url, LOGGER_DEBUG);
}
}
return $success;
}
/**
* @brief Removes unwanted parts from a contact url
*
* @param string $url Contact url
* @return string Contact url with the wanted parts
*/
function clean_contact_url($url) {
$parts = parse_url($url);
if (!isset($parts["scheme"]) || !isset($parts["host"])) {
return $url;
}
$new_url = $parts["scheme"]."://".$parts["host"];
if (isset($parts["port"])) {
$new_url .= ":".$parts["port"];
}
if (isset($parts["path"])) {
$new_url .= $parts["path"];
}
if ($new_url != $url) {
logger("Cleaned contact url ".$url." to ".$new_url." - Called by: ".System::callstack(), LOGGER_DEBUG);
}
return $new_url;
}
/**
* @brief Replace alternate OStatus user format with the primary one
*
* @param arr $contact contact array (called by reference)
*/
function fix_alternate_contact_address(&$contact) {
if (($contact["network"] == NETWORK_OSTATUS) && poco_alternate_ostatus_url($contact["url"])) {
$data = Probe::uri($contact["url"]);
if ($contact["network"] == NETWORK_OSTATUS) {
logger("Fix primary url from ".$contact["url"]." to ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
$contact["url"] = $data["url"];
$contact["addr"] = $data["addr"];
$contact["alias"] = $data["alias"];
$contact["server_url"] = $data["baseurl"];
}
}
}
/**
* @brief Fetch the gcontact id, add an entry if not existed
*
* @param arr $contact contact array
* @return bool|int Returns false if not found, integer if contact was found
*/
function get_gcontact_id($contact) {
$gcontact_id = 0;
$doprobing = false;
if (in_array($contact["network"], array(NETWORK_PHANTOM))) {
logger("Invalid network for contact url ".$contact["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
return false;
}
if ($contact["network"] == NETWORK_STATUSNET) {
$contact["network"] = NETWORK_OSTATUS;
}
// All new contacts are hidden by default
if (!isset($contact["hide"])) {
$contact["hide"] = true;
}
// Replace alternate OStatus user format with the primary one
fix_alternate_contact_address($contact);
// Remove unwanted parts from the contact url (e.g. "?zrl=...")
if (in_array($contact["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS))) {
$contact["url"] = clean_contact_url($contact["url"]);
}
dba::lock('gcontact');
$r = q("SELECT `id`, `last_contact`, `last_failure`, `network` FROM `gcontact` WHERE `nurl` = '%s' LIMIT 1",
dbesc(normalise_link($contact["url"])));
if (DBM::is_result($r)) {
$gcontact_id = $r[0]["id"];
// Update every 90 days
if (in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""))) {
$last_failure_str = $r[0]["last_failure"];
$last_failure = strtotime($r[0]["last_failure"]);
$last_contact_str = $r[0]["last_contact"];
$last_contact = strtotime($r[0]["last_contact"]);
$doprobing = (((time() - $last_contact) > (90 * 86400)) && ((time() - $last_failure) > (90 * 86400)));
}
} else {
q("INSERT INTO `gcontact` (`name`, `nick`, `addr` , `network`, `url`, `nurl`, `photo`, `created`, `updated`, `location`, `about`, `hide`, `generation`)
VALUES ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d)",
dbesc($contact["name"]),
dbesc($contact["nick"]),
dbesc($contact["addr"]),
dbesc($contact["network"]),
dbesc($contact["url"]),
dbesc(normalise_link($contact["url"])),
dbesc($contact["photo"]),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc($contact["location"]),
dbesc($contact["about"]),
intval($contact["hide"]),
intval($contact["generation"])
);
$r = q("SELECT `id`, `network` FROM `gcontact` WHERE `nurl` = '%s' ORDER BY `id` LIMIT 2",
dbesc(normalise_link($contact["url"])));
if (DBM::is_result($r)) {
$gcontact_id = $r[0]["id"];
$doprobing = in_array($r[0]["network"], array(NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS, ""));
}
}
dba::unlock();
if ($doprobing) {
logger("Last Contact: ". $last_contact_str." - Last Failure: ".$last_failure_str." - Checking: ".$contact["url"], LOGGER_DEBUG);
Worker::add(PRIORITY_LOW, 'gprobe', $contact["url"]);
}
return $gcontact_id;
}
/**
* @brief Updates the gcontact table from a given array
*
* @param arr $contact contact array
* @return bool|int Returns false if not found, integer if contact was found
*/
function update_gcontact($contact) {
// Check for invalid "contact-type" value
if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
$contact['contact-type'] = 0;
}
/// @todo update contact table as well
$gcontact_id = get_gcontact_id($contact);
if (!$gcontact_id) {
return false;
}
$r = q("SELECT `name`, `nick`, `photo`, `location`, `about`, `addr`, `generation`, `birthday`, `gender`, `keywords`,
`contact-type`, `hide`, `nsfw`, `network`, `alias`, `notify`, `server_url`, `connect`, `updated`, `url`
FROM `gcontact` WHERE `id` = %d LIMIT 1",
intval($gcontact_id));
// Get all field names
$fields = array();
foreach ($r[0] as $field => $data) {
$fields[$field] = $data;
}
unset($fields["url"]);
unset($fields["updated"]);
unset($fields["hide"]);
// Bugfix: We had an error in the storing of keywords which lead to the "0"
// This value is still transmitted via poco.
if ($contact["keywords"] == "0") {
unset($contact["keywords"]);
}
if ($r[0]["keywords"] == "0") {
$r[0]["keywords"] = "";
}
// assign all unassigned fields from the database entry
foreach ($fields as $field => $data) {
if (!isset($contact[$field]) || ($contact[$field] == "")) {
$contact[$field] = $r[0][$field];
}
}
if (!isset($contact["hide"])) {
$contact["hide"] = $r[0]["hide"];
}
$fields["hide"] = $r[0]["hide"];
if ($contact["network"] == NETWORK_STATUSNET) {
$contact["network"] = NETWORK_OSTATUS;
}
// Replace alternate OStatus user format with the primary one
fix_alternate_contact_address($contact);
if (!isset($contact["updated"])) {
$contact["updated"] = DBM::date();
}
if ($contact["network"] == NETWORK_TWITTER) {
$contact["server_url"] = 'http://twitter.com';
}
if ($contact["server_url"] == "") {
$data = Probe::uri($contact["url"]);
if ($data["network"] != NETWORK_PHANTOM) {
$contact["server_url"] = $data['baseurl'];
}
} else {
$contact["server_url"] = normalise_link($contact["server_url"]);
}
if (($contact["addr"] == "") && ($contact["server_url"] != "") && ($contact["nick"] != "")) {
$hostname = str_replace("http://", "", $contact["server_url"]);
$contact["addr"] = $contact["nick"]."@".$hostname;
}
// Check if any field changed
$update = false;
unset($fields["generation"]);
if ((($contact["generation"] > 0) && ($contact["generation"] <= $r[0]["generation"])) || ($r[0]["generation"] == 0)) {
foreach ($fields as $field => $data) {
if ($contact[$field] != $r[0][$field]) {
logger("Difference for contact ".$contact["url"]." in field '".$field."'. New value: '".$contact[$field]."', old value '".$r[0][$field]."'", LOGGER_DEBUG);
$update = true;
}
}
if ($contact["generation"] < $r[0]["generation"]) {
logger("Difference for contact ".$contact["url"]." in field 'generation'. new value: '".$contact["generation"]."', old value '".$r[0]["generation"]."'", LOGGER_DEBUG);
$update = true;
}
}
if ($update) {
logger("Update gcontact for ".$contact["url"], LOGGER_DEBUG);
$condition = array('`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)',
normalise_link($contact["url"]), $contact["generation"]);
$contact["updated"] = DBM::date($contact["updated"]);
$updated = array('photo' => $contact['photo'], 'name' => $contact['name'],
'nick' => $contact['nick'], 'addr' => $contact['addr'],
'network' => $contact['network'], 'birthday' => $contact['birthday'],
'gender' => $contact['gender'], 'keywords' => $contact['keywords'],
'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
'notify' => $contact['notify'], 'url' => $contact['url'],
'location' => $contact['location'], 'about' => $contact['about'],
'generation' => $contact['generation'], 'updated' => $contact['updated'],
'server_url' => $contact['server_url'], 'connect' => $contact['connect']);
dba::update('gcontact', $updated, $condition, $fields);
// Now update the contact entry with the user id "0" as well.
// This is used for the shadow copies of public items.
$r = q("SELECT `id` FROM `contact` WHERE `nurl` = '%s' AND `uid` = 0 ORDER BY `id` LIMIT 1",
dbesc(normalise_link($contact["url"])));
if (DBM::is_result($r)) {
logger("Update public contact ".$r[0]["id"], LOGGER_DEBUG);
update_contact_avatar($contact["photo"], 0, $r[0]["id"]);
$fields = array('name', 'nick', 'addr',
'network', 'bd', 'gender',
'keywords', 'alias', 'contact-type',
'url', 'location', 'about');
$old_contact = dba::select('contact', $fields, array('id' => $r[0]["id"]), array('limit' => 1));
// Update it with the current values
$fields = array('name' => $contact['name'], 'nick' => $contact['nick'],
'addr' => $contact['addr'], 'network' => $contact['network'],
'bd' => $contact['birthday'], 'gender' => $contact['gender'],
'keywords' => $contact['keywords'], 'alias' => $contact['alias'],
'contact-type' => $contact['contact-type'], 'url' => $contact['url'],
'location' => $contact['location'], 'about' => $contact['about']);
dba::update('contact', $fields, array('id' => $r[0]["id"]), $old_contact);
}
}
return $gcontact_id;
}
/**
* @brief Updates the gcontact entry from probe
*
* @param str $url profile link
*/
function update_gcontact_from_probe($url) {
$data = Probe::uri($url);
if (in_array($data["network"], array(NETWORK_PHANTOM))) {
logger("Invalid network for contact url ".$data["url"]." - Called by: ".System::callstack(), LOGGER_DEBUG);
return;
}
$data["server_url"] = $data["baseurl"];
update_gcontact($data);
}
/**
* @brief Update the gcontact entry for a given user id
*
* @param int $uid User ID
*/
function update_gcontact_for_user($uid) {
$r = q("SELECT `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
`profile`.`name`, `profile`.`about`, `profile`.`gender`,
`profile`.`pub_keywords`, `profile`.`dob`, `profile`.`photo`,
`profile`.`net-publish`, `user`.`nickname`, `user`.`hidewall`,
`contact`.`notify`, `contact`.`url`, `contact`.`addr`
FROM `profile`
INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
INNER JOIN `contact` ON `contact`.`uid` = `profile`.`uid`
WHERE `profile`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self`",
intval($uid));
$location = formatted_location(array("locality" => $r[0]["locality"], "region" => $r[0]["region"],
"country-name" => $r[0]["country-name"]));
// The "addr" field was added in 3.4.3 so it can be empty for older users
if ($r[0]["addr"] != "") {
$addr = $r[0]["nickname"].'@'.str_replace(array("http://", "https://"), "", System::baseUrl());
} else {
$addr = $r[0]["addr"];
}
$gcontact = array("name" => $r[0]["name"], "location" => $location, "about" => $r[0]["about"],
"gender" => $r[0]["gender"], "keywords" => $r[0]["pub_keywords"],
"birthday" => $r[0]["dob"], "photo" => $r[0]["photo"],
"notify" => $r[0]["notify"], "url" => $r[0]["url"],
"hide" => ($r[0]["hidewall"] || !$r[0]["net-publish"]),
"nick" => $r[0]["nickname"], "addr" => $addr,
"connect" => $addr, "server_url" => System::baseUrl(),
"generation" => 1, "network" => NETWORK_DFRN);
update_gcontact($gcontact);
}
/**
* @brief Fetches users of given GNU Social server
*
* If the "Statistics" plugin is enabled (See http://gstools.org/ for details) we query user data with this.
*
* @param str $server Server address
*/
function gs_fetch_users($server) {
logger("Fetching users from GNU Social server ".$server, LOGGER_DEBUG);
$url = $server."/main/statistics";
$result = z_fetch_url($url);
if (!$result["success"]) {
return false;
}
$statistics = json_decode($result["body"]);
if (is_object($statistics->config)) {
if ($statistics->config->instance_with_ssl) {
$server = "https://";
} else {
$server = "http://";
}
$server .= $statistics->config->instance_address;
$hostname = $statistics->config->instance_address;
} else {
/// @TODO is_object() above means here no object, still $statistics is being used as object
if ($statistics->instance_with_ssl) {
$server = "https://";
} else {
$server = "http://";
}
$server .= $statistics->instance_address;
$hostname = $statistics->instance_address;
}
if (is_object($statistics->users)) {
foreach ($statistics->users as $nick => $user) {
$profile_url = $server."/".$user->nickname;
$contact = array("url" => $profile_url,
"name" => $user->fullname,
"addr" => $user->nickname."@".$hostname,
"nick" => $user->nickname,
"about" => $user->bio,
"network" => NETWORK_OSTATUS,
"photo" => System::baseUrl()."/images/person-175.jpg");
get_gcontact_id($contact);
}
}
}
/**
* @brief Asking GNU Social server on a regular base for their user data
*
*/
function gs_discover() {
$requery_days = intval(Config::get("system", "poco_requery_days"));
$last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
$r = q("SELECT `nurl`, `url` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `network` = '%s' AND `last_poco_query` < '%s' ORDER BY RAND() LIMIT 5",
dbesc(NETWORK_OSTATUS), dbesc($last_update));
if (!DBM::is_result($r)) {
return;
}
foreach ($r as $server) {
gs_fetch_users($server["url"]);
q("UPDATE `gserver` SET `last_poco_query` = '%s' WHERE `nurl` = '%s'", dbesc(datetime_convert()), dbesc($server["nurl"]));
}
}
/**
* @brief Returns a list of all known servers
* @return array List of server urls
*/
function poco_serverlist() {
$r = q("SELECT `url`, `site_name` AS `displayName`, `network`, `platform`, `version` FROM `gserver`
WHERE `network` IN ('%s', '%s', '%s') AND `last_contact` > `last_failure`
ORDER BY `last_contact`
LIMIT 1000",
dbesc(NETWORK_DFRN), dbesc(NETWORK_DIASPORA), dbesc(NETWORK_OSTATUS));
if (!DBM::is_result($r)) {
return false;
}
return $r;
}