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friendica/src/Model/GContact.php

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<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Model;
use DOMDocument;
use DOMXPath;
use Exception;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\System;
use Friendica\Core\Search;
use Friendica\Core\Worker;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Network\Probe;
use Friendica\Protocol\ActivityPub;
use Friendica\Protocol\PortableContact;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Network;
use Friendica\Util\Strings;
/**
* This class handles GlobalContact related functions
*/
class GContact
{
/**
* No discovery of followers/followings
*/
const DISCOVERY_NONE = 0;
/**
* Only discover followers/followings from direct contacts
*/
const DISCOVERY_DIRECT = 1;
/**
* Recursive discovery of followers/followings
*/
const DISCOVERY_RECURSIVE = 2;
/**
* Search global contact table by nick or name
*
* @param string $search Name or nick
* @param string $mode Search mode (e.g. "community")
*
* @return array with search results
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function searchByName($search, $mode = '')
{
if (empty($search)) {
return [];
}
// check supported networks
if (DI::config()->get('system', 'diaspora_enabled')) {
$diaspora = Protocol::DIASPORA;
} else {
$diaspora = Protocol::DFRN;
}
if (!DI::config()->get('system', 'ostatus_disabled')) {
$ostatus = Protocol::OSTATUS;
} else {
$ostatus = Protocol::DFRN;
}
// check if we search only communities or every contact
if ($mode === 'community') {
$extra_sql = ' AND `community`';
} else {
$extra_sql = '';
}
$search .= '%';
$results = DBA::p("SELECT `nurl` FROM `gcontact`
WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
(`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
);
$gcontacts = [];
while ($result = DBA::fetch($results)) {
$urlparts = parse_url($result['nurl']);
// Ignore results that look strange.
// For historic reasons the gcontact table does contain some garbage.
if (empty($result['nurl']) || !empty($urlparts['query']) || !empty($urlparts['fragment'])) {
continue;
}
$gcontacts[] = Contact::getDetailsByURL($result['nurl'], local_user());
}
return $gcontacts;
}
/**
* Link the gcontact entry with user, contact and global contact
*
* @param integer $gcid Global contact ID
* @param integer $uid User ID
* @param integer $cid Contact ID
* @param integer $zcid Global Contact ID
* @return void
* @throws Exception
*/
public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
{
if ($gcid <= 0) {
return;
}
$condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
}
/**
* Sanitize the given gcontact data
*
* 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: ...
*
* @param array $gcontact array with gcontact data
* @return array $gcontact
* @throws Exception
*/
public static function sanitize($gcontact)
{
if (empty($gcontact['url'])) {
throw new Exception('URL is empty');
}
$gcontact['server_url'] = $gcontact['server_url'] ?? '';
$urlparts = parse_url($gcontact['url']);
if (empty($urlparts['scheme'])) {
throw new Exception('This (' . $gcontact['url'] . ") doesn't seem to be an url.");
}
if (in_array($urlparts['host'], ['twitter.com', 'identi.ca'])) {
throw new Exception('Contact from a non federated network ignored. (' . $gcontact['url'] . ')');
}
// Don't store the statusnet connector as network
// We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
if ($gcontact['network'] == Protocol::STATUSNET) {
$gcontact['network'] = '';
}
// Assure that there are no parameter fragments in the profile url
if (empty($gcontact['*network']) || in_array($gcontact['network'], Protocol::FEDERATED)) {
$gcontact['url'] = self::cleanContactUrl($gcontact['url']);
}
// The global contacts should contain the original picture, not the cached one
if (($gcontact['generation'] != 1) && stristr(Strings::normaliseLink($gcontact['photo']), Strings::normaliseLink(DI::baseUrl() . '/photo/'))) {
$gcontact['photo'] = '';
}
if (empty($gcontact['network'])) {
$gcontact['network'] = '';
$condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
$contact = DBA::selectFirst('contact', ['network'], $condition);
if (DBA::isResult($contact)) {
$gcontact['network'] = $contact['network'];
}
if (($gcontact['network'] == '') || ($gcontact['network'] == Protocol::OSTATUS)) {
$condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
$gcontact['url'], Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
$contact = DBA::selectFirst('contact', ['network'], $condition);
if (DBA::isResult($contact)) {
$gcontact['network'] = $contact['network'];
}
}
}
$fields = ['network', 'updated', 'server_url', 'url', 'addr'];
$gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($gcontact['url'])]);
if (DBA::isResult($gcnt)) {
if (!isset($gcontact['network']) && ($gcnt['network'] != Protocol::STATUSNET)) {
$gcontact['network'] = $gcnt['network'];
}
if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
$gcontact['updated'] = $gcnt['updated'];
}
if (!isset($gcontact['server_url']) && (Strings::normaliseLink($gcnt['server_url']) != Strings::normaliseLink($gcnt['url']))) {
$gcontact['server_url'] = $gcnt['server_url'];
}
if (!isset($gcontact['addr'])) {
$gcontact['addr'] = $gcnt['addr'];
}
}
if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']))
&& GServer::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
) {
$data = Probe::uri($gcontact['url']);
if ($data['network'] == Protocol::PHANTOM) {
throw new Exception('Probing for URL ' . $gcontact['url'] . ' failed');
}
$orig_profile = $gcontact['url'];
$gcontact['server_url'] = $data['baseurl'];
$gcontact = array_merge($gcontact, $data);
}
if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
throw new Exception('No name and photo for URL '.$gcontact['url']);
}
if (!in_array($gcontact['network'], Protocol::FEDERATED)) {
throw new Exception('No federated network (' . $gcontact['network'] . ') detected for URL ' . $gcontact['url']);
}
if (empty($gcontact['server_url'])) {
// We check the server url to be sure that it is a real one
$server_url = self::getBasepath($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'] = $server_url;
}
}
// The server URL doesn't seem to be valid, so we don't store it.
if (!GServer::check($gcontact['server_url'], $gcontact['network'])) {
$gcontact['server_url'] = '';
}
return $gcontact;
}
/**
* @param integer $uid id
* @param integer $cid id
* @return integer
* @throws Exception
*/
public static function countCommonFriends($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($cid)
);
if (DBA::isResult($r)) {
return $r[0]['total'];
}
return 0;
}
/**
* @param integer $uid id
* @param integer $zcid zcid
* @return integer
* @throws Exception
*/
public static function countCommonFriendsZcid($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($uid)
);
if (DBA::isResult($r)) {
return $r[0]['total'];
}
return 0;
}
/**
* @param integer $uid user
* @param integer $cid cid
* @param integer $start optional, default 0
* @param integer $limit optional, default 9999
* @param boolean $shuffle optional, default false
* @return object
* @throws Exception
*/
public static function commonFriends($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 DBA::isResult()
return $r;
}
/**
* @param integer $uid user
* @param integer $zcid zcid
* @param integer $start optional, default 0
* @param integer $limit optional, default 9999
* @param boolean $shuffle optional, default false
* @return object
* @throws Exception
*/
public static function commonFriendsZcid($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 DBA::isResult()
return $r;
}
/**
* @param integer $uid user
* @param integer $cid cid
* @return integer
* @throws Exception
*/
public static function countAllFriends($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($uid)
);
if (DBA::isResult($r)) {
return $r[0]['total'];
}
return 0;
}
/**
* @param integer $uid user
* @param integer $cid cid
* @param integer $start optional, default 0
* @param integer $limit optional, default 80
* @return array
* @throws Exception
*/
public static function allFriends($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 DBA::isResult()
return $r;
}
/**
* @param int $uid user
* @param integer $start optional, default 0
* @param integer $limit optional, default 80
* @return array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function suggestionQuery($uid, $start = 0, $limit = 80)
{
if (!$uid) {
return [];
}
$network = [Protocol::DFRN, Protocol::ACTIVITYPUB];
if (DI::config()->get('system', 'diaspora_enabled')) {
$network[] = Protocol::DIASPORA;
}
if (!DI::config()->get('system', 'ostatus_disabled')) {
$network[] = Protocol::OSTATUS;
}
$sql_network = "'" . implode("', '", $network) . "'";
/// @todo This query is really slow
// By now we cache the data for five minutes
$r = q(
"SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
AND `gcontact`.`updated` >= '%s' AND NOT `gcontact`.`hide`
AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
AND `gcontact`.`network` IN (%s)
GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
intval($uid),
intval($uid),
intval($uid),
intval($uid),
DBA::NULL_DATETIME,
$sql_network,
intval($start),
intval($limit)
);
if (DBA::isResult($r) && count($r) >= ($limit -1)) {
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),
DBA::NULL_DATETIME,
$sql_network,
intval($start),
intval($limit)
);
$list = [];
foreach ($r2 as $suggestion) {
$list[$suggestion['nurl']] = $suggestion;
}
foreach ($r as $suggestion) {
$list[$suggestion['nurl']] = $suggestion;
}
while (sizeof($list) > ($limit)) {
array_pop($list);
}
return $list;
}
/**
* @return void
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function updateSuggestions()
{
$done = [];
/// @TODO Check if it is really neccessary to poll the own server
PortableContact::loadWorker(0, 0, 0, DI::baseUrl() . '/poco');
$done[] = DI::baseUrl() . '/poco';
if (strlen(DI::config()->get('system', 'directory'))) {
$x = Network::fetchUrl(Search::getGlobalDirectory() . '/pubsites');
if (!empty($x)) {
$j = json_decode($x);
if (!empty($j->entries)) {
foreach ($j->entries as $entry) {
GServer::check($entry->url);
$url = $entry->url . '/poco';
if (!in_array($url, $done)) {
PortableContact::loadWorker(0, 0, 0, $url);
$done[] = $url;
}
}
}
}
}
// Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
$contacts = DBA::p("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN (?, ?)", Protocol::DFRN, Protocol::DIASPORA);
while ($contact = DBA::fetch($contacts)) {
$base = substr($contact['poco'], 0, strrpos($contact['poco'], '/'));
if (!in_array($base, $done)) {
PortableContact::loadWorker(0, 0, 0, $base);
}
}
}
/**
* Removes unwanted parts from a contact url
*
* @param string $url Contact url
*
* @return string Contact url with the wanted parts
* @throws Exception
*/
public static function cleanContactUrl($url)
{
$parts = parse_url($url);
if (empty($parts['scheme']) || empty($parts['host'])) {
return $url;
}
$new_url = $parts['scheme'] . '://' . $parts['host'];
if (!empty($parts['port'])) {
$new_url .= ':' . $parts['port'];
}
if (!empty($parts['path'])) {
$new_url .= $parts['path'];
}
if ($new_url != $url) {
Logger::info('Cleaned contact url', ['url' => $url, 'new_url' => $new_url, 'callstack' => System::callstack()]);
}
return $new_url;
}
/**
* Fetch the gcontact id, add an entry if not existed
*
* @param array $contact contact array
*
* @return bool|int Returns false if not found, integer if contact was found
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function getId($contact)
{
$gcontact_id = 0;
if (empty($contact['network'])) {
Logger::notice('Empty network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
return false;
}
if (in_array($contact['network'], [Protocol::PHANTOM])) {
Logger::notice('Invalid network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
return false;
}
if ($contact['network'] == Protocol::STATUSNET) {
$contact['network'] = Protocol::OSTATUS;
}
// All new contacts are hidden by default
if (!isset($contact['hide'])) {
$contact['hide'] = true;
}
// Remove unwanted parts from the contact url (e.g. '?zrl=...')
if (in_array($contact['network'], Protocol::FEDERATED)) {
$contact['url'] = self::cleanContactUrl($contact['url']);
}
DBA::lock('gcontact');
$fields = ['id', 'last_contact', 'last_failure', 'network'];
$gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($contact['url'])]);
if (DBA::isResult($gcnt)) {
$gcontact_id = $gcnt['id'];
} else {
$contact['location'] = $contact['location'] ?? '';
$contact['about'] = $contact['about'] ?? '';
$contact['generation'] = $contact['generation'] ?? 0;
$fields = ['name' => $contact['name'], 'nick' => $contact['nick'] ?? '', 'addr' => $contact['addr'] ?? '', 'network' => $contact['network'],
'url' => $contact['url'], 'nurl' => Strings::normaliseLink($contact['url']), 'photo' => $contact['photo'],
'created' => DateTimeFormat::utcNow(), 'updated' => DateTimeFormat::utcNow(), 'location' => $contact['location'],
'about' => $contact['about'], 'hide' => $contact['hide'], 'generation' => $contact['generation']];
DBA::insert('gcontact', $fields);
$condition = ['nurl' => Strings::normaliseLink($contact['url'])];
$cnt = DBA::selectFirst('gcontact', ['id', 'network'], $condition, ['order' => ['id']]);
if (DBA::isResult($cnt)) {
$gcontact_id = $cnt['id'];
}
}
DBA::unlock();
return $gcontact_id;
}
/**
* Updates the gcontact table from a given array
*
* @param array $contact contact array
*
* @return bool|int Returns false if not found, integer if contact was found
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function update($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
$gcontact_id = self::getId($contact);
if (!$gcontact_id) {
return false;
}
$public_contact = DBA::selectFirst('gcontact', [
'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'keywords',
'contact-type', 'hide', 'nsfw', 'network', 'alias', 'notify', 'server_url', 'connect', 'updated', 'url'
], ['id' => $gcontact_id]);
if (!DBA::isResult($public_contact)) {
return false;
}
// Get all field names
$fields = [];
foreach ($public_contact 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 (isset($contact['keywords']) && ($contact['keywords'] == '0')) {
unset($contact['keywords']);
}
if (isset($public_contact['keywords']) && ($public_contact['keywords'] == '0')) {
$public_contact['keywords'] = '';
}
// assign all unassigned fields from the database entry
foreach ($fields as $field => $data) {
if (empty($contact[$field])) {
$contact[$field] = $public_contact[$field];
}
}
if (!isset($contact['hide'])) {
$contact['hide'] = $public_contact['hide'];
}
$fields['hide'] = $public_contact['hide'];
if ($contact['network'] == Protocol::STATUSNET) {
$contact['network'] = Protocol::OSTATUS;
}
if (!isset($contact['updated'])) {
$contact['updated'] = DateTimeFormat::utcNow();
}
if ($contact['network'] == Protocol::TWITTER) {
$contact['server_url'] = 'http://twitter.com';
}
if (empty($contact['server_url'])) {
$data = Probe::uri($contact['url']);
if ($data['network'] != Protocol::PHANTOM) {
$contact['server_url'] = $data['baseurl'];
}
} else {
$contact['server_url'] = Strings::normaliseLink($contact['server_url']);
}
if (empty($contact['addr']) && !empty($contact['server_url']) && !empty($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'] <= $public_contact['generation'])) || ($public_contact['generation'] == 0)) {
foreach ($fields as $field => $data) {
if ($contact[$field] != $public_contact[$field]) {
Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => $field, 'new' => $contact[$field], 'old' => $public_contact[$field]]);
$update = true;
}
}
if ($contact['generation'] < $public_contact['generation']) {
Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => 'generation', 'new' => $contact['generation'], 'old' => $public_contact['generation']]);
$update = true;
}
}
if ($update) {
Logger::debug('Update gcontact.', ['contact' => $contact['url']]);
$condition = ["`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)",
Strings::normaliseLink($contact['url']), $contact['generation']];
$contact['updated'] = DateTimeFormat::utc($contact['updated']);
$updated = [
'photo' => $contact['photo'], 'name' => $contact['name'],
'nick' => $contact['nick'], 'addr' => $contact['addr'],
'network' => $contact['network'], 'birthday' => $contact['birthday'],
'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);
}
return $gcontact_id;
}
/**
* Set the last date that the contact had posted something
*
* @param string $data Probing result
* @param bool $force force updating
*/
public static function setLastUpdate(array $data, bool $force = false)
{
// Fetch the global contact
$gcontact = DBA::selectFirst('gcontact', ['created', 'updated', 'last_contact', 'last_failure'],
['nurl' => Strings::normaliseLink($data['url'])]);
if (!DBA::isResult($gcontact)) {
return;
}
if (!$force && !GServer::updateNeeded($gcontact['created'], $gcontact['updated'], $gcontact['last_failure'], $gcontact['last_contact'])) {
Logger::info("Don't update profile", ['url' => $data['url'], 'updated' => $gcontact['updated']]);
return;
}
if (self::updateFromNoScrape($data)) {
return;
}
if (!empty($data['outbox'])) {
self::updateFromOutbox($data['outbox'], $data);
} elseif (!empty($data['poll']) && ($data['network'] == Protocol::ACTIVITYPUB)) {
self::updateFromOutbox($data['poll'], $data);
} elseif (!empty($data['poll'])) {
self::updateFromFeed($data);
}
}
/**
* Update a global contact via the "noscrape" endpoint
*
* @param string $data Probing result
*
* @return bool 'true' if update was successful or the server was unreachable
*/
private static function updateFromNoScrape(array $data)
{
// Check the 'noscrape' endpoint when it is a Friendica server
$gserver = DBA::selectFirst('gserver', ['noscrape'], ["`nurl` = ? AND `noscrape` != ''",
Strings::normaliseLink($data['baseurl'])]);
if (!DBA::isResult($gserver)) {
return false;
}
$curlResult = Network::curl($gserver['noscrape'] . '/' . $data['nick']);
if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
$noscrape = json_decode($curlResult->getBody(), true);
if (!empty($noscrape) && !empty($noscrape['updated'])) {
$noscrape['updated'] = DateTimeFormat::utc($noscrape['updated'], DateTimeFormat::MYSQL);
$fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $noscrape['updated']];
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
return true;
}
} elseif ($curlResult->isTimeout()) {
// On a timeout return the existing value, but mark the contact as failure
$fields = ['last_failure' => DateTimeFormat::utcNow()];
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
return true;
}
return false;
}
/**
* Update a global contact via an ActivityPub Outbox
*
* @param string $feed
* @param array $data Probing result
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function updateFromOutbox(string $feed, array $data)
{
$outbox = ActivityPub::fetchContent($feed);
if (empty($outbox)) {
return;
}
if (!empty($outbox['orderedItems'])) {
$items = $outbox['orderedItems'];
} elseif (!empty($outbox['first']['orderedItems'])) {
$items = $outbox['first']['orderedItems'];
} elseif (!empty($outbox['first']['href']) && ($outbox['first']['href'] != $feed)) {
self::updateFromOutbox($outbox['first']['href'], $data);
return;
} elseif (!empty($outbox['first'])) {
if (is_string($outbox['first']) && ($outbox['first'] != $feed)) {
self::updateFromOutbox($outbox['first'], $data);
} else {
Logger::warning('Unexpected data', ['outbox' => $outbox]);
}
return;
} else {
$items = [];
}
$last_updated = '';
foreach ($items as $activity) {
if (!empty($activity['published'])) {
$published = DateTimeFormat::utc($activity['published']);
} elseif (!empty($activity['object']['published'])) {
$published = DateTimeFormat::utc($activity['object']['published']);
} else {
continue;
}
if ($last_updated < $published) {
$last_updated = $published;
}
}
if (empty($last_updated)) {
return;
}
$fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
}
/**
* Update a global contact via an XML feed
*
* @param string $data Probing result
*/
private static function updateFromFeed(array $data)
{
// Search for the newest entry in the feed
$curlResult = Network::curl($data['poll']);
if (!$curlResult->isSuccess()) {
$fields = ['last_failure' => DateTimeFormat::utcNow()];
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
Logger::info("Profile wasn't reachable (no feed)", ['url' => $data['url']]);
return;
}
$doc = new DOMDocument();
@$doc->loadXML($curlResult->getBody());
$xpath = new DOMXPath($doc);
$xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom');
$entries = $xpath->query('/atom:feed/atom:entry');
$last_updated = '';
foreach ($entries as $entry) {
$published_item = $xpath->query('atom:published/text()', $entry)->item(0);
$updated_item = $xpath->query('atom:updated/text()' , $entry)->item(0);
$published = !empty($published_item->nodeValue) ? DateTimeFormat::utc($published_item->nodeValue) : null;
$updated = !empty($updated_item->nodeValue) ? DateTimeFormat::utc($updated_item->nodeValue) : null;
if (empty($published) || empty($updated)) {
Logger::notice('Invalid entry for XPath.', ['entry' => $entry, 'url' => $data['url']]);
continue;
}
if ($last_updated < $published) {
$last_updated = $published;
}
if ($last_updated < $updated) {
$last_updated = $updated;
}
}
if (empty($last_updated)) {
return;
}
$fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
}
/**
* Updates the gcontact entry from a given public contact id
*
* @param integer $cid contact id
* @return void
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function updateFromPublicContactID($cid)
{
self::updateFromPublicContact(['id' => $cid]);
}
/**
* Updates the gcontact entry from a given public contact url
*
* @param string $url contact url
* @return integer gcontact id
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function updateFromPublicContactURL($url)
{
return self::updateFromPublicContact(['nurl' => Strings::normaliseLink($url)]);
}
/**
* Helper function for updateFromPublicContactID and updateFromPublicContactURL
*
* @param array $condition contact condition
* @return integer gcontact id
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function updateFromPublicContact($condition)
{
$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
'bd', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archive', 'term-date',
'created', 'updated', 'avatar', 'success_update', 'failure_update', 'forum', 'prv',
'baseurl', 'sensitive', 'unsearchable'];
$contact = DBA::selectFirst('contact', $fields, array_merge($condition, ['uid' => 0, 'network' => Protocol::FEDERATED]));
if (!DBA::isResult($contact)) {
return 0;
}
$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'generation',
'birthday', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archived', 'archive_date',
'created', 'updated', 'photo', 'last_contact', 'last_failure', 'community', 'connect',
'server_url', 'nsfw', 'hide', 'id'];
$old_gcontact = DBA::selectFirst('gcontact', $fields, ['nurl' => $contact['nurl']]);
$do_insert = !DBA::isResult($old_gcontact);
if ($do_insert) {
$old_gcontact = [];
}
$gcontact = [];
// These fields are identical in both contact and gcontact
$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
'contact-type', 'network', 'addr', 'notify', 'alias', 'created', 'updated'];
foreach ($fields as $field) {
$gcontact[$field] = $contact[$field];
}
// These fields are having different names but the same content
$gcontact['server_url'] = $contact['baseurl'] ?? ''; // "baseurl" can be null, "server_url" not
$gcontact['nsfw'] = $contact['sensitive'];
$gcontact['hide'] = $contact['unsearchable'];
$gcontact['archived'] = $contact['archive'];
$gcontact['archive_date'] = $contact['term-date'];
$gcontact['birthday'] = $contact['bd'];
$gcontact['photo'] = $contact['avatar'];
$gcontact['last_contact'] = $contact['success_update'];
$gcontact['last_failure'] = $contact['failure_update'];
$gcontact['community'] = ($contact['forum'] || $contact['prv']);
foreach (['last_contact', 'last_failure', 'updated'] as $field) {
if (!empty($old_gcontact[$field]) && ($old_gcontact[$field] >= $gcontact[$field])) {
unset($gcontact[$field]);
}
}
if (!$gcontact['archived']) {
$gcontact['archive_date'] = DBA::NULL_DATETIME;
}
if (!empty($old_gcontact['created']) && ($old_gcontact['created'] > DBA::NULL_DATETIME)
&& ($old_gcontact['created'] <= $gcontact['created'])) {
unset($gcontact['created']);
}
if (empty($gcontact['birthday']) && ($gcontact['birthday'] <= DBA::NULL_DATETIME)) {
unset($gcontact['birthday']);
}
if (empty($old_gcontact['generation']) || ($old_gcontact['generation'] > 2)) {
$gcontact['generation'] = 2; // We fetched the data directly from the other server
}
if (!$do_insert) {
DBA::update('gcontact', $gcontact, ['nurl' => $contact['nurl']], $old_gcontact);
return $old_gcontact['id'];
} elseif (!$gcontact['archived']) {
DBA::insert('gcontact', $gcontact);
return DBA::lastInsertId();
}
}
/**
* Updates the gcontact entry from probe
*
* @param string $url profile link
* @param boolean $force Optional forcing of network probing (otherwise we use the cached data)
*
* @return boolean 'true' when contact had been updated
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function updateFromProbe($url, $force = false)
{
$data = Probe::uri($url, $force);
if (in_array($data['network'], [Protocol::PHANTOM])) {
$fields = ['last_failure' => DateTimeFormat::utcNow()];
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
Logger::info('Invalid network for contact', ['url' => $data['url'], 'callstack' => System::callstack()]);
return false;
}
$data['server_url'] = $data['baseurl'];
self::update($data);
// Set the date of the latest post
self::setLastUpdate($data, $force);
return true;
}
/**
* Update the gcontact entry for a given user id
*
* @param int $uid User ID
* @return bool
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function updateForUser($uid)
{
$profile = Profile::getByUID($uid);
if (empty($profile)) {
Logger::error('Cannot find profile', ['uid' => $uid]);
return false;
}
$user = User::getOwnerDataById($uid);
if (empty($user)) {
Logger::error('Cannot find user', ['uid' => $uid]);
return false;
}
$userdata = array_merge($profile, $user);
$location = Profile::formatLocation(
['locality' => $userdata['locality'], 'region' => $userdata['region'], 'country-name' => $userdata['country-name']]
);
$gcontact = ['name' => $userdata['name'], 'location' => $location, 'about' => $userdata['about'],
'keywords' => $userdata['pub_keywords'],
'birthday' => $userdata['dob'], 'photo' => $userdata['photo'],
"notify" => $userdata['notify'], 'url' => $userdata['url'],
"hide" => !$userdata['net-publish'],
'nick' => $userdata['nickname'], 'addr' => $userdata['addr'],
"connect" => $userdata['addr'], "server_url" => DI::baseUrl(),
"generation" => 1, 'network' => Protocol::DFRN];
self::update($gcontact);
}
/**
* Get the basepath for a given contact link
*
* @param string $url The gcontact link
* @param boolean $dont_update Don't update the contact
*
* @return string basepath
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function getBasepath($url, $dont_update = false)
{
$gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
if (!empty($gcontact['server_url'])) {
return $gcontact['server_url'];
} elseif ($dont_update) {
return '';
}
self::updateFromProbe($url, true);
// Fetch the result
$gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
if (empty($gcontact['server_url'])) {
Logger::info('No baseurl for gcontact', ['url' => $url]);
return '';
}
Logger::info('Found baseurl for gcontact', ['url' => $url, 'baseurl' => $gcontact['server_url']]);
return $gcontact['server_url'];
}
/**
* Fetches users of given GNU Social server
*
* If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
*
* @param string $server Server address
* @return bool
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function fetchGsUsers($server)
{
Logger::info('Fetching users from GNU Social server', ['server' => $server]);
$url = $server . '/main/statistics';
$curlResult = Network::curl($url);
if (!$curlResult->isSuccess()) {
return false;
}
$statistics = json_decode($curlResult->getBody());
if (!empty($statistics->config->instance_address)) {
if (!empty($statistics->config->instance_with_ssl)) {
$server = 'https://';
} else {
$server = 'http://';
}
$server .= $statistics->config->instance_address;
$hostname = $statistics->config->instance_address;
} elseif (!empty($statistics->instance_address)) {
if (!empty($statistics->instance_with_ssl)) {
$server = 'https://';
} else {
$server = 'http://';
}
$server .= $statistics->instance_address;
$hostname = $statistics->instance_address;
}
if (!empty($statistics->users)) {
foreach ($statistics->users as $nick => $user) {
$profile_url = $server . '/' . $user->nickname;
$contact = ['url' => $profile_url,
'name' => $user->fullname,
'addr' => $user->nickname . '@' . $hostname,
'nick' => $user->nickname,
"network" => Protocol::OSTATUS,
'photo' => DI::baseUrl() . '/images/person-300.jpg'];
if (isset($user->bio)) {
$contact['about'] = $user->bio;
}
self::getId($contact);
}
}
}
/**
* Asking GNU Social server on a regular base for their user data
*
* @return void
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function discoverGsUsers()
{
$requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
$last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
$r = DBA::select('gserver', ['nurl', 'url'], [
'`network` = ?
AND `last_contact` >= `last_failure`
AND `last_poco_query` < ?',
Protocol::OSTATUS,
$last_update
], [
'limit' => 5,
'order' => ['RAND()']
]);
if (!DBA::isResult($r)) {
return;
}
foreach ($r as $server) {
self::fetchGsUsers($server['url']);
DBA::update('gserver', ['last_poco_query' => DateTimeFormat::utcNow()], ['nurl' => $server['nurl']]);
}
}
/**
* Fetches the followers of a given profile and adds them
*
* @param string $url URL of a profile
* @return void
*/
public static function discoverFollowers(string $url)
{
$gcontact = DBA::selectFirst('gcontact', ['id', 'last_discovery'], ['nurl' => Strings::normaliseLink(($url))]);
if (!DBA::isResult($gcontact)) {
return;
}
if ($gcontact['last_discovery'] > DateTimeFormat::utc('now - 1 month')) {
Logger::info('Last discovery was less then a month before.', ['url' => $url, 'discovery' => $gcontact['last_discovery']]);
return;
}
$gcid = $gcontact['id'];
$apcontact = APContact::getByURL($url);
if (!empty($apcontact['followers']) && is_string($apcontact['followers'])) {
$followers = ActivityPub::fetchItems($apcontact['followers']);
} else {
$followers = [];
}
if (!empty($apcontact['following']) && is_string($apcontact['following'])) {
$followings = ActivityPub::fetchItems($apcontact['following']);
} else {
$followings = [];
}
if (!empty($followers) || !empty($followings)) {
if (!empty($followers)) {
// Clear the follower list, since it will be recreated in the next step
DBA::update('gfollower', ['deleted' => true], ['gcid' => $gcid]);
}
$contacts = [];
foreach (array_merge($followers, $followings) as $contact) {
if (is_string($contact)) {
$contacts[] = $contact;
} elseif (!empty($contact['url']) && is_string($contact['url'])) {
$contacts[] = $contact['url'];
}
}
$contacts = array_unique($contacts);
Logger::info('Discover AP contacts', ['url' => $url, 'contacts' => count($contacts)]);
foreach ($contacts as $contact) {
$gcontact = DBA::selectFirst('gcontact', ['id'], ['nurl' => Strings::normaliseLink(($contact))]);
if (DBA::isResult($gcontact)) {
$fields = [];
if (in_array($contact, $followers)) {
$fields = ['gcid' => $gcid, 'follower-gcid' => $gcontact['id']];
} elseif (in_array($contact, $followings)) {
$fields = ['gcid' => $gcontact['id'], 'follower-gcid' => $gcid];
}
if (!empty($fields)) {
Logger::info('Set relation between contacts', $fields);
DBA::update('gfollower', ['deleted' => false], $fields, true);
continue;
}
}
if (!Network::isUrlBlocked($contact)) {
Logger::info('Discover new AP contact', ['url' => $contact]);
Worker::add(PRIORITY_LOW, 'UpdateGContact', $contact, 'nodiscover');
} else {
Logger::info('No discovery, the URL is blocked.', ['url' => $contact]);
}
}
if (!empty($followers)) {
// Delete all followers that aren't undeleted
DBA::delete('gfollower', ['gcid' => $gcid, 'deleted' => true]);
}
DBA::update('gcontact', ['last_discovery' => DateTimeFormat::utcNow()], ['id' => $gcid]);
Logger::info('AP contacts discovery finished, last discovery set', ['url' => $url]);
return;
}
$data = Probe::uri($url);
if (empty($data['poco'])) {
return;
}
$curlResult = Network::curl($data['poco']);
if (!$curlResult->isSuccess()) {
return;
}
$poco = json_decode($curlResult->getBody(), true);
if (empty($poco['entry'])) {
return;
}
Logger::info('PoCo Discovery started', ['url' => $url, 'contacts' => count($poco['entry'])]);
foreach ($poco['entry'] as $entries) {
if (!empty($entries['urls'])) {
foreach ($entries['urls'] as $entry) {
if ($entry['type'] == 'profile') {
if (DBA::exists('gcontact', ['nurl' => Strings::normaliseLink(($entry['value']))])) {
continue;
}
if (!Network::isUrlBlocked($entry['value'])) {
Logger::info('Discover new PoCo contact', ['url' => $entry['value']]);
Worker::add(PRIORITY_LOW, 'UpdateGContact', $entry['value'], 'nodiscover');
} else {
Logger::info('No discovery, the URL is blocked.', ['url' => $entry['value']]);
}
}
}
}
}
DBA::update('gcontact', ['last_discovery' => DateTimeFormat::utcNow()], ['id' => $gcid]);
Logger::info('PoCo Discovery finished', ['url' => $url]);
}
/**
* Returns a random, global contact of the current node
*
* @return string The profile URL
* @throws Exception
*/
public static function getRandomUrl()
{
$r = DBA::selectFirst('gcontact', ['url'], [
'`network` = ?
AND `last_contact` >= `last_failure`
AND `updated` > ?',
Protocol::DFRN,
DateTimeFormat::utc('now - 1 month'),
], ['order' => ['RAND()']]);
if (DBA::isResult($r)) {
return $r['url'];
}
return '';
}
}
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