friendica/src/Protocol/DFRN.php

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<?php
/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @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\Protocol;
use DOMDocument;
use DOMXPath;
use Friendica\App\BaseURL;
use Friendica\Content\Text\BBCode;
use Friendica\Core\Hook;
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use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Database\DBA;
use Friendica\DI;
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use Friendica\Model\Contact;
use Friendica\Model\Conversation;
use Friendica\Model\Event;
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use Friendica\Model\FContact;
use Friendica\Model\GServer;
use Friendica\Model\Item;
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use Friendica\Model\ItemURI;
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use Friendica\Model\Mail;
use Friendica\Model\Notification;
use Friendica\Model\PermissionSet;
use Friendica\Model\Post;
use Friendica\Model\Post\Category;
use Friendica\Model\Profile;
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use Friendica\Model\Tag;
use Friendica\Model\User;
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use Friendica\Model\Verb;
use Friendica\Network\Probe;
use Friendica\Util\Crypto;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Images;
use Friendica\Util\Network;
use Friendica\Util\Strings;
use Friendica\Util\XML;
/**
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* This class contain functions to create and send DFRN XML files
*/
class DFRN
{
const TOP_LEVEL = 0; // Top level posting
const REPLY = 1; // Regular reply that is stored locally
const REPLY_RC = 2; // Reply that will be relayed
/**
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* Generates an array of contact and user for DFRN imports
*
* This array contains not only the receiver but also the sender of the message.
*
* @param integer $cid Contact id
* @param integer $uid User id
*
* @return array importer
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* @throws \Exception
*/
public static function getImporter($cid, $uid = 0)
{
$condition = ['id' => $cid, 'blocked' => false, 'pending' => false];
$contact = DBA::selectFirst('contact', [], $condition);
if (!DBA::isResult($contact)) {
return [];
}
$contact['cpubkey'] = $contact['pubkey'];
$contact['cprvkey'] = $contact['prvkey'];
$contact['senderName'] = $contact['name'];
if ($uid != 0) {
$condition = ['uid' => $uid, 'account_expired' => false, 'account_removed' => false];
$user = DBA::selectFirst('user', [], $condition);
if (!DBA::isResult($user)) {
return [];
}
$user['importer_uid'] = $user['uid'];
$user['uprvkey'] = $user['prvkey'];
} else {
$user = ['importer_uid' => 0, 'uprvkey' => '', 'timezone' => 'UTC',
'nickname' => '', 'sprvkey' => '', 'spubkey' => '',
'page-flags' => 0, 'account-type' => 0, 'prvnets' => 0];
}
return array_merge($contact, $user);
}
/**
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* Generates the atom entries for delivery.php
*
* This function is used whenever content is transmitted via DFRN.
*
* @param array $items Item elements
* @param array $owner Owner record
*
* @return string DFRN entries
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo Find proper type-hints
*/
public static function entries($items, $owner)
{
$doc = new DOMDocument('1.0', 'utf-8');
$doc->formatOutput = true;
$root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
if (! count($items)) {
return trim($doc->saveXML());
}
foreach ($items as $item) {
// These values aren't sent when sending from the queue.
/// @todo Check if we can set these values from the queue or if they are needed at all.
$item["entry:comment-allow"] = ($item["entry:comment-allow"] ?? '') ?: true;
$item["entry:cid"] = $item["entry:cid"] ?? 0;
$entry = self::entry($doc, "text", $item, $owner, $item["entry:comment-allow"], $item["entry:cid"]);
if (isset($entry)) {
$root->appendChild($entry);
}
}
return trim($doc->saveXML());
}
/**
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* Generate an atom feed for the given user
*
* This function is called when another server is pulling data from the user feed.
*
* @param string $dfrn_id DFRN ID from the requesting party
* @param string $owner_nick Owner nick name
* @param string $last_update Date of the last update
* @param int $direction Can be -1, 0 or 1.
* @param boolean $onlyheader Output only the header without content? (Default is "no")
*
* @return string DFRN feed entries
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function feed($dfrn_id, $owner_nick, $last_update, $direction = 0, $onlyheader = false)
{
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$a = DI::app();
$sitefeed = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
$public_feed = (($dfrn_id) ? false : true);
$starred = false; // not yet implemented, possible security issues
$converse = false;
if ($public_feed && $a->argc > 2) {
for ($x = 2; $x < $a->argc; $x++) {
if ($a->argv[$x] == 'converse') {
$converse = true;
}
if ($a->argv[$x] == 'starred') {
$starred = true;
}
if ($a->argv[$x] == 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1])) {
$category = $a->argv[$x+1];
}
}
}
// default permissions - anonymous user
$sql_extra = sprintf(" AND `private` != %s ", Item::PRIVATE);
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$owner = DBA::selectFirst('owner-view', [], ['nickname' => $owner_nick]);
if (!DBA::isResult($owner)) {
Logger::log(sprintf('No contact found for nickname=%d', $owner_nick), Logger::WARNING);
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exit();
}
$owner_id = $owner['uid'];
if (!$public_feed) {
switch ($direction) {
case (-1):
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$sql_extra = sprintf(" AND `issued-id` = '%s' ", DBA::escape($dfrn_id));
break;
case 0:
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$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", DBA::escape($dfrn_id));
break;
case 1:
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$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", DBA::escape($dfrn_id));
break;
default:
return false;
break; // NOTREACHED
}
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$contact = DBA::selectFirst('contact', [], ["NOT `blocked` AND `contact`.`uid` = ?" . $sql_extra, $owner_id]);
if (!DBA::isResult($contact)) {
Logger::notice('No contact found', ['uid' => $owner_id]);
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exit();
}
$set = PermissionSet::get($owner_id, $contact['id']);
if (!empty($set)) {
$sql_extra = " AND `psid` IN (" . implode(',', $set) .")";
} else {
$sql_extra = sprintf(" AND `private` != %s", Item::PRIVATE);
}
}
if (!strlen($last_update)) {
$last_update = 'now -30 days';
}
if (isset($category)) {
$sql_extra .= sprintf(" AND `uri-id` IN (SELECT `uri-id` FROM `category-view` WHERE `name` = '%s' AND `type` = %d AND `uid` = %d)",
DBA::escape(Strings::protectSprintf($category)), intval(Category::CATEGORY), intval($owner_id));
}
if ($public_feed && ! $converse) {
$sql_extra .= " AND `self` ";
}
$check_date = DateTimeFormat::utc($last_update);
$condition = ["`uid` = ? AND `wall` AND `changed` > ? AND `vid` != ? AND `visible`" . $sql_extra,
$owner_id, $check_date, Verb::getID(Activity::ANNOUNCE)];
$params = ['sort' => ['parent' => $public_feed, 'received']];
$items = Post::selectToArray(Item::DELIVER_FIELDLIST, $condition, $params, ['limit' => 300]);
/*
* Will check further below if this actually returned results.
* We will provide an empty feed if that is the case.
*/
$doc = new DOMDocument('1.0', 'utf-8');
$doc->formatOutput = true;
$alternatelink = $owner['url'];
if (isset($category)) {
$alternatelink .= "/category/".$category;
}
if ($public_feed) {
$author = "dfrn:owner";
} else {
$author = "author";
}
$root = self::addHeader($doc, $owner, $author, $alternatelink, true);
/// @TODO This hook can't work anymore
// \Friendica\Core\Hook::callAll('atom_feed', $atom);
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if (!DBA::isResult($items) || $onlyheader) {
$atom = trim($doc->saveXML());
Hook::callAll('atom_feed_end', $atom);
return $atom;
}
foreach ($items as $item) {
// prevent private email from leaking.
if ($item['network'] == Protocol::MAIL) {
continue;
}
// public feeds get html, our own nodes use bbcode
if ($public_feed) {
$type = 'html';
// catch any email that's in a public conversation and make sure it doesn't leak
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if ($item['private'] == Item::PRIVATE) {
continue;
}
} else {
$type = 'text';
}
$entry = self::entry($doc, $type, $item, $owner, true);
if (isset($entry)) {
$root->appendChild($entry);
}
}
$atom = trim($doc->saveXML());
Hook::callAll('atom_feed_end', $atom);
return $atom;
}
/**
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* Generate an atom entry for a given uri id and user
*
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* @param int $uri_id The uri id
* @param int $uid The user id
* @param boolean $conversation Show the conversation. If false show the single post.
*
* @return string DFRN feed entry
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
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public static function itemFeed(int $uri_id, int $uid, bool $conversation = false)
{
if ($conversation) {
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$condition = ['parent-uri-id' => $uri_id];
} else {
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$condition = ['uri-id' => $uri_id];
}
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$condition['uid'] = $uid;
$items = Post::selectToArray(Item::DELIVER_FIELDLIST, $condition);
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if (!DBA::isResult($items)) {
return '';
}
$item = $items[0];
if ($item['uid'] != 0) {
$owner = User::getOwnerDataById($item['uid']);
if (!$owner) {
return '';
}
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} else {
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$owner = ['uid' => 0, 'nick' => 'feed-item'];
}
$doc = new DOMDocument('1.0', 'utf-8');
$doc->formatOutput = true;
$type = 'html';
if ($conversation) {
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$root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
$doc->appendChild($root);
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$root->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
$root->setAttribute("xmlns:at", ActivityNamespace::TOMB);
$root->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
$root->setAttribute("xmlns:dfrn", ActivityNamespace::DFRN);
$root->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
$root->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
$root->setAttribute("xmlns:poco", ActivityNamespace::POCO);
$root->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
$root->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
//$root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
foreach ($items as $item) {
$entry = self::entry($doc, $type, $item, $owner, true, 0);
if (isset($entry)) {
$root->appendChild($entry);
}
}
} else {
self::entry($doc, $type, $item, $owner, true, 0, true);
}
$atom = trim($doc->saveXML());
return $atom;
}
/**
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* Create XML text for DFRN mails
*
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* @param array $mail Mail record
* @param array $owner Owner record
*
* @return string DFRN mail
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
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public static function mail(array $mail, array $owner)
{
$doc = new DOMDocument('1.0', 'utf-8');
$doc->formatOutput = true;
$root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
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$mailElement = $doc->createElement("dfrn:mail");
$senderElement = $doc->createElement("dfrn:sender");
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XML::addElement($doc, $senderElement, "dfrn:name", $owner['name']);
XML::addElement($doc, $senderElement, "dfrn:uri", $owner['url']);
XML::addElement($doc, $senderElement, "dfrn:avatar", $owner['thumb']);
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$mailElement->appendChild($senderElement);
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XML::addElement($doc, $mailElement, "dfrn:id", $mail['uri']);
XML::addElement($doc, $mailElement, "dfrn:in-reply-to", $mail['parent-uri']);
XML::addElement($doc, $mailElement, "dfrn:sentdate", DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM));
XML::addElement($doc, $mailElement, "dfrn:subject", $mail['title']);
XML::addElement($doc, $mailElement, "dfrn:content", $mail['body']);
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$root->appendChild($mailElement);
return trim($doc->saveXML());
}
/**
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* Create XML text for DFRN friend suggestions
*
* @param array $item suggestion elements
* @param array $owner Owner record
*
* @return string DFRN suggestions
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
public static function fsuggest($item, $owner)
{
$doc = new DOMDocument('1.0', 'utf-8');
$doc->formatOutput = true;
$root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
$suggest = $doc->createElement("dfrn:suggest");
XML::addElement($doc, $suggest, "dfrn:url", $item['url']);
XML::addElement($doc, $suggest, "dfrn:name", $item['name']);
XML::addElement($doc, $suggest, "dfrn:photo", $item['photo']);
XML::addElement($doc, $suggest, "dfrn:request", $item['request']);
XML::addElement($doc, $suggest, "dfrn:note", $item['note']);
$root->appendChild($suggest);
return trim($doc->saveXML());
}
/**
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* Create XML text for DFRN relocations
*
* @param array $owner Owner record
* @param int $uid User ID
*
* @return string DFRN relocations
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
public static function relocate($owner, $uid)
{
/* get site pubkey. this could be a new installation with no site keys*/
$pubkey = DI::config()->get('system', 'site_pubkey');
if (! $pubkey) {
$res = Crypto::newKeypair(1024);
DI::config()->set('system', 'site_prvkey', $res['prvkey']);
DI::config()->set('system', 'site_pubkey', $res['pubkey']);
}
$rp = q(
"SELECT `resource-id` , `scale`, type FROM `photo`
WHERE `profile` = 1 AND `uid` = %d ORDER BY scale;",
$uid
);
$photos = [];
$ext = Images::supportedTypes();
foreach ($rp as $p) {
$photos[$p['scale']] = DI::baseUrl().'/photo/'.$p['resource-id'].'-'.$p['scale'].'.'.$ext[$p['type']];
}
$doc = new DOMDocument('1.0', 'utf-8');
$doc->formatOutput = true;
$root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
$relocate = $doc->createElement("dfrn:relocate");
XML::addElement($doc, $relocate, "dfrn:url", $owner['url']);
XML::addElement($doc, $relocate, "dfrn:name", $owner['name']);
XML::addElement($doc, $relocate, "dfrn:addr", $owner['addr']);
XML::addElement($doc, $relocate, "dfrn:avatar", $owner['avatar']);
XML::addElement($doc, $relocate, "dfrn:photo", $photos[4]);
XML::addElement($doc, $relocate, "dfrn:thumb", $photos[5]);
XML::addElement($doc, $relocate, "dfrn:micro", $photos[6]);
XML::addElement($doc, $relocate, "dfrn:request", $owner['request']);
XML::addElement($doc, $relocate, "dfrn:confirm", $owner['confirm']);
XML::addElement($doc, $relocate, "dfrn:notify", $owner['notify']);
XML::addElement($doc, $relocate, "dfrn:poll", $owner['poll']);
XML::addElement($doc, $relocate, "dfrn:sitepubkey", DI::config()->get('system', 'site_pubkey'));
$root->appendChild($relocate);
return trim($doc->saveXML());
}
/**
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* Adds the header elements for the DFRN protocol
*
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* @param DOMDocument $doc XML document
* @param array $owner Owner record
* @param string $authorelement Element name for the author
* @param string $alternatelink link to profile or category
* @param bool $public Is it a header for public posts?
*
* @return object XML root object
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
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private static function addHeader(DOMDocument $doc, $owner, $authorelement, $alternatelink = "", $public = false)
{
if ($alternatelink == "") {
$alternatelink = $owner['url'];
}
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$root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
$doc->appendChild($root);
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$root->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
$root->setAttribute("xmlns:at", ActivityNamespace::TOMB);
$root->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
$root->setAttribute("xmlns:dfrn", ActivityNamespace::DFRN);
$root->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
$root->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
$root->setAttribute("xmlns:poco", ActivityNamespace::POCO);
$root->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
$root->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
XML::addElement($doc, $root, "id", DI::baseUrl()."/profile/".$owner["nick"]);
XML::addElement($doc, $root, "title", $owner["name"]);
$attributes = ["uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION];
XML::addElement($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
$attributes = ["rel" => "license", "href" => "http://creativecommons.org/licenses/by/3.0/"];
XML::addElement($doc, $root, "link", "", $attributes);
$attributes = ["rel" => "alternate", "type" => "text/html", "href" => $alternatelink];
XML::addElement($doc, $root, "link", "", $attributes);
if ($public) {
// DFRN itself doesn't uses this. But maybe someone else wants to subscribe to the public feed.
OStatus::hublinks($doc, $root, $owner["nick"]);
$attributes = ["rel" => "salmon", "href" => DI::baseUrl()."/salmon/".$owner["nick"]];
XML::addElement($doc, $root, "link", "", $attributes);
$attributes = ["rel" => "http://salmon-protocol.org/ns/salmon-replies", "href" => DI::baseUrl()."/salmon/".$owner["nick"]];
XML::addElement($doc, $root, "link", "", $attributes);
$attributes = ["rel" => "http://salmon-protocol.org/ns/salmon-mention", "href" => DI::baseUrl()."/salmon/".$owner["nick"]];
XML::addElement($doc, $root, "link", "", $attributes);
}
// For backward compatibility we keep this element
if ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY) {
XML::addElement($doc, $root, "dfrn:community", 1);
}
// The former element is replaced by this one
XML::addElement($doc, $root, "dfrn:account_type", $owner["account-type"]);
/// @todo We need a way to transmit the different page flags like "User::PAGE_FLAGS_PRVGROUP"
XML::addElement($doc, $root, "updated", DateTimeFormat::utcNow(DateTimeFormat::ATOM));
$author = self::addAuthor($doc, $owner, $authorelement, $public);
$root->appendChild($author);
return $root;
}
/**
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* Adds the author element in the header for the DFRN protocol
*
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* @param DOMDocument $doc XML document
* @param array $owner Owner record
* @param string $authorelement Element name for the author
* @param boolean $public boolean
*
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* @return \DOMElement XML author object
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
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private static function addAuthor(DOMDocument $doc, array $owner, $authorelement, $public)
{
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// Should the profile be "unsearchable" in the net? Then add the "hide" element
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$hide = DBA::exists('profile', ['uid' => $owner['uid'], 'net-publish' => false]);
$author = $doc->createElement($authorelement);
$namdate = DateTimeFormat::utc($owner['name-date'].'+00:00', DateTimeFormat::ATOM);
$picdate = DateTimeFormat::utc($owner['avatar-date'].'+00:00', DateTimeFormat::ATOM);
$attributes = [];
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if (!$public || !$hide) {
$attributes = ["dfrn:updated" => $namdate];
}
XML::addElement($doc, $author, "name", $owner["name"], $attributes);
XML::addElement($doc, $author, "uri", DI::baseUrl().'/profile/'.$owner["nickname"], $attributes);
XML::addElement($doc, $author, "dfrn:handle", $owner["addr"], $attributes);
$attributes = ["rel" => "photo", "type" => "image/jpeg",
"media:width" => 300, "media:height" => 300, "href" => $owner['photo']];
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if (!$public || !$hide) {
$attributes["dfrn:updated"] = $picdate;
}
XML::addElement($doc, $author, "link", "", $attributes);
$attributes["rel"] = "avatar";
XML::addElement($doc, $author, "link", "", $attributes);
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if ($hide) {
XML::addElement($doc, $author, "dfrn:hide", "true");
}
// The following fields will only be generated if the data isn't meant for a public feed
if ($public) {
return $author;
}
$birthday = feed_birthday($owner['uid'], $owner['timezone']);
if ($birthday) {
XML::addElement($doc, $author, "dfrn:birthday", $birthday);
}
// Only show contact details when we are allowed to
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$profile = DBA::selectFirst('owner-view',
['about', 'name', 'homepage', 'nickname', 'timezone', 'locality', 'region', 'country-name', 'pub_keywords', 'xmpp', 'dob'],
['uid' => $owner['uid'], 'hidewall' => false]);
if (DBA::isResult($profile)) {
XML::addElement($doc, $author, "poco:displayName", $profile["name"]);
XML::addElement($doc, $author, "poco:updated", $namdate);
if (trim($profile["dob"]) > DBA::NULL_DATE) {
XML::addElement($doc, $author, "poco:birthday", "0000-".date("m-d", strtotime($profile["dob"])));
}
XML::addElement($doc, $author, "poco:note", $profile["about"]);
XML::addElement($doc, $author, "poco:preferredUsername", $profile["nickname"]);
$savetz = date_default_timezone_get();
date_default_timezone_set($profile["timezone"]);
XML::addElement($doc, $author, "poco:utcOffset", date("P"));
date_default_timezone_set($savetz);
if (trim($profile["homepage"]) != "") {
$urls = $doc->createElement("poco:urls");
XML::addElement($doc, $urls, "poco:type", "homepage");
XML::addElement($doc, $urls, "poco:value", $profile["homepage"]);
XML::addElement($doc, $urls, "poco:primary", "true");
$author->appendChild($urls);
}
if (trim($profile["pub_keywords"]) != "") {
$keywords = explode(",", $profile["pub_keywords"]);
foreach ($keywords as $keyword) {
XML::addElement($doc, $author, "poco:tags", trim($keyword));
}
}
if (trim($profile["xmpp"]) != "") {
$ims = $doc->createElement("poco:ims");
XML::addElement($doc, $ims, "poco:type", "xmpp");
XML::addElement($doc, $ims, "poco:value", $profile["xmpp"]);
XML::addElement($doc, $ims, "poco:primary", "true");
$author->appendChild($ims);
}
if (trim($profile["locality"].$profile["region"].$profile["country-name"]) != "") {
$element = $doc->createElement("poco:address");
XML::addElement($doc, $element, "poco:formatted", Profile::formatLocation($profile));
if (trim($profile["locality"]) != "") {
XML::addElement($doc, $element, "poco:locality", $profile["locality"]);
}
if (trim($profile["region"]) != "") {
XML::addElement($doc, $element, "poco:region", $profile["region"]);
}
if (trim($profile["country-name"]) != "") {
XML::addElement($doc, $element, "poco:country", $profile["country-name"]);
}
$author->appendChild($element);
}
}
return $author;
}
/**
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* Adds the author elements in the "entry" elements of the DFRN protocol
*
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* @param DOMDocument $doc XML document
* @param string $element Element name for the author
* @param string $contact_url Link of the contact
* @param array $item Item elements
*
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* @return \DOMElement XML author object
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
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private static function addEntryAuthor(DOMDocument $doc, $element, $contact_url, $item)
{
$author = $doc->createElement($element);
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$contact = Contact::getByURLForUser($contact_url, $item["uid"], false, ['url', 'name', 'addr', 'photo']);
if (!empty($contact)) {
XML::addElement($doc, $author, "name", $contact["name"]);
XML::addElement($doc, $author, "uri", $contact["url"]);
XML::addElement($doc, $author, "dfrn:handle", $contact["addr"]);
/// @Todo
/// - Check real image type and image size
/// - Check which of these boths elements we should use
$attributes = [
"rel" => "photo",
"type" => "image/jpeg",
"media:width" => 80,
"media:height" => 80,
"href" => $contact["photo"]];
XML::addElement($doc, $author, "link", "", $attributes);
$attributes = [
"rel" => "avatar",
"type" => "image/jpeg",
"media:width" => 80,
"media:height" => 80,
"href" => $contact["photo"]];
XML::addElement($doc, $author, "link", "", $attributes);
}
return $author;
}
/**
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* Adds the activity elements
*
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* @param DOMDocument $doc XML document
* @param string $element Element name for the activity
* @param string $activity activity value
*
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* @return \DOMElement XML activity object
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find proper type-hints
*/
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private static function createActivity(DOMDocument $doc, $element, $activity)
{
if ($activity) {
$entry = $doc->createElement($element);
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$r = XML::parseString($activity);
if (!$r) {
return false;
}
if ($r->type) {
XML::addElement($doc, $entry, "activity:object-type", $r->type);
}
if ($r->id) {
XML::addElement($doc, $entry, "id", $r->id);
}
if ($r->title) {
XML::addElement($doc, $entry, "title", $r->title);
}
if ($r->link) {
if (substr($r->link, 0, 1) == '<') {
if (strstr($r->link, '&') && (! strstr($r->link, '&amp;'))) {
$r->link = str_replace('&', '&amp;', $r->link);
}
$r->link = preg_replace('/\<link(.*?)\"\>/', '<link$1"/>', $r->link);
// XML does need a single element as root element so we add a dummy element here
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$data = XML::parseString("<dummy>" . $r->link . "</dummy>");
if (is_object($data)) {
foreach ($data->link as $link) {
$attributes = [];
foreach ($link->attributes() as $parameter => $value) {
$attributes[$parameter] = $value;
}
XML::addElement($doc, $entry, "link", "", $attributes);
}
}
} else {
$attributes = ["rel" => "alternate", "type" => "text/html", "href" => $r->link];
XML::addElement($doc, $entry, "link", "", $attributes);
}
}
if ($r->content) {
XML::addElement($doc, $entry, "content", BBCode::convert($r->content), ["type" => "html"]);
}
return $entry;
}
return false;
}
/**
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* Adds the elements for attachments
*
* @param object $doc XML document
* @param object $root XML root
* @param array $item Item element
*
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* @return void XML attachment object
* @todo Find proper type-hints
*/
private static function getAttachment($doc, $root, $item)
{
foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]) as $attachment) {
$attributes = ['rel' => 'enclosure',
'href' => $attachment['url'],
'type' => $attachment['mimetype']];
if (!empty($attachment['size'])) {
$attributes['length'] = intval($attachment['size']);
}
if (!empty($attachment['description'])) {
$attributes['title'] = $attachment['description'];
}
XML::addElement($doc, $root, 'link', '', $attributes);
}
}
/**
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* Adds the "entry" elements for the DFRN protocol
*
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* @param DOMDocument $doc XML document
* @param string $type "text" or "html"
* @param array $item Item element
* @param array $owner Owner record
* @param bool $comment Trigger the sending of the "comment" element
* @param int $cid Contact ID of the recipient
* @param bool $single If set, the entry is created as an XML document with a single "entry" element
*
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* @return null|\DOMElement XML entry object
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo Find proper type-hints
*/
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private static function entry(DOMDocument $doc, $type, array $item, array $owner, $comment = false, $cid = 0, $single = false)
{
$mentioned = [];
if (!$item['parent']) {
Logger::notice('Item without parent found.', ['type' => $type, 'item' => $item]);
return null;
}
if ($item['deleted']) {
$attributes = ["ref" => $item['uri'], "when" => DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM)];
return XML::createElement($doc, "at:deleted-entry", "", $attributes);
}
if (!$single) {
$entry = $doc->createElement("entry");
} else {
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$entry = $doc->createElementNS(ActivityNamespace::ATOM1, 'entry');
$doc->appendChild($entry);
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$entry->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
$entry->setAttribute("xmlns:at", ActivityNamespace::TOMB);
$entry->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
$entry->setAttribute("xmlns:dfrn", ActivityNamespace::DFRN);
$entry->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
$entry->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
$entry->setAttribute("xmlns:poco", ActivityNamespace::POCO);
$entry->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
$entry->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
}
$body = Post\Media::addAttachmentsToBody($item['uri-id']);
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if ($item['private'] == Item::PRIVATE) {
$body = Item::fixPrivatePhotos($body, $owner['uid'], $item, $cid);
}
// Remove the abstract element. It is only locally important.
$body = BBCode::stripAbstract($body);
$htmlbody = '';
if ($type == 'html') {
$htmlbody = $body;
if ($item['title'] != "") {
$htmlbody = "[b]" . $item['title'] . "[/b]\n\n" . $htmlbody;
}
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$htmlbody = BBCode::convert($htmlbody, false, BBCode::OSTATUS);
}
$author = self::addEntryAuthor($doc, "author", $item["author-link"], $item);
$entry->appendChild($author);
$dfrnowner = self::addEntryAuthor($doc, "dfrn:owner", $item["owner-link"], $item);
$entry->appendChild($dfrnowner);
if ($item['gravity'] != GRAVITY_PARENT) {
$parent = Post::selectFirst(['guid', 'plink'], ['uri' => $item['thr-parent'], 'uid' => $item['uid']]);
if (DBA::isResult($parent)) {
$attributes = ["ref" => $item['thr-parent'], "type" => "text/html",
"href" => $parent['plink'],
"dfrn:diaspora_guid" => $parent['guid']];
XML::addElement($doc, $entry, "thr:in-reply-to", "", $attributes);
}
}
// Add conversation data. This is used for OStatus
$conversation_href = DI::baseUrl()."/display/".$item["parent-guid"];
$conversation_uri = $conversation_href;
if (isset($parent_item)) {
$conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $item['thr-parent']]);
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if (DBA::isResult($conversation)) {
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if ($conversation['conversation-uri'] != '') {
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$conversation_uri = $conversation['conversation-uri'];
}
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if ($conversation['conversation-href'] != '') {
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$conversation_href = $conversation['conversation-href'];
}
}
}
$attributes = [
"href" => $conversation_href,
"ref" => $conversation_uri];
XML::addElement($doc, $entry, "ostatus:conversation", $conversation_uri, $attributes);
XML::addElement($doc, $entry, "id", $item["uri"]);
XML::addElement($doc, $entry, "title", $item["title"]);
XML::addElement($doc, $entry, "published", DateTimeFormat::utc($item["created"] . "+00:00", DateTimeFormat::ATOM));
XML::addElement($doc, $entry, "updated", DateTimeFormat::utc($item["edited"] . "+00:00", DateTimeFormat::ATOM));
// "dfrn:env" is used to read the content
XML::addElement($doc, $entry, "dfrn:env", Strings::base64UrlEncode($body, true));
// The "content" field is not read by the receiver. We could remove it when the type is "text"
// We keep it at the moment, maybe there is some old version that doesn't read "dfrn:env"
XML::addElement($doc, $entry, "content", (($type == 'html') ? $htmlbody : $body), ["type" => $type]);
// We save this value in "plink". Maybe we should read it from there as well?
XML::addElement(
$doc,
$entry,
"link",
"",
["rel" => "alternate", "type" => "text/html",
"href" => DI::baseUrl() . "/display/" . $item["guid"]]
);
// "comment-allow" is some old fashioned stuff for old Friendica versions.
// It is included in the rewritten code for completeness
if ($comment) {
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XML::addElement($doc, $entry, "dfrn:comment-allow", 1);
}
if ($item['location']) {
XML::addElement($doc, $entry, "dfrn:location", $item['location']);
}
if ($item['coord']) {
XML::addElement($doc, $entry, "georss:point", $item['coord']);
}
if ($item['private']) {
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// Friendica versions prior to 2020.3 can't handle "unlisted" properly. So we can only transmit public and private
XML::addElement($doc, $entry, "dfrn:private", ($item['private'] == Item::PRIVATE ? Item::PRIVATE : Item::PUBLIC));
XML::addElement($doc, $entry, "dfrn:unlisted", $item['private'] == Item::UNLISTED);
}
if ($item['extid']) {
XML::addElement($doc, $entry, "dfrn:extid", $item['extid']);
}
if ($item['post-type'] == Item::PT_PAGE) {
XML::addElement($doc, $entry, "dfrn:bookmark", "true");
}
if ($item['app']) {
XML::addElement($doc, $entry, "statusnet:notice_info", "", ["local_id" => $item['id'], "source" => $item['app']]);
}
XML::addElement($doc, $entry, "dfrn:diaspora_guid", $item["guid"]);
// The signed text contains the content in Markdown, the sender handle and the signatur for the content
// It is needed for relayed comments to Diaspora.
if ($item['signed_text']) {
$sign = base64_encode(json_encode(['signed_text' => $item['signed_text'],'signature' => '','signer' => '']));
XML::addElement($doc, $entry, "dfrn:diaspora_signature", $sign);
}
XML::addElement($doc, $entry, "activity:verb", self::constructVerb($item));
if ($item['object-type'] != "") {
XML::addElement($doc, $entry, "activity:object-type", $item['object-type']);
} elseif ($item['gravity'] == GRAVITY_PARENT) {
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XML::addElement($doc, $entry, "activity:object-type", Activity\ObjectType::NOTE);
} else {
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XML::addElement($doc, $entry, "activity:object-type", Activity\ObjectType::COMMENT);
}
$actobj = self::createActivity($doc, "activity:object", $item['object']);
if ($actobj) {
$entry->appendChild($actobj);
}
$actarg = self::createActivity($doc, "activity:target", $item['target']);
if ($actarg) {
$entry->appendChild($actarg);
}
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$tags = Tag::getByURIId($item['uri-id']);
if (count($tags)) {
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foreach ($tags as $tag) {
if (($type != 'html') || ($tag['type'] == Tag::HASHTAG)) {
XML::addElement($doc, $entry, "category", "", ["scheme" => "X-DFRN:" . Tag::TAG_CHARACTER[$tag['type']] . ":" . $tag['url'], "term" => $tag['name']]);
}
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if ($tag['type'] != Tag::HASHTAG) {
$mentioned[$tag['url']] = $tag['url'];
}
}
}
foreach ($mentioned as $mention) {
$condition = ['uid' => $owner["uid"], 'nurl' => Strings::normaliseLink($mention)];
$contact = DBA::selectFirst('contact', ['forum', 'prv'], $condition);
if (DBA::isResult($contact) && ($contact["forum"] || $contact["prv"])) {
XML::addElement(
$doc,
$entry,
"link",
"",
["rel" => "mentioned",
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"ostatus:object-type" => Activity\ObjectType::GROUP,
"href" => $mention]
);
} else {
XML::addElement(
$doc,
$entry,
"link",
"",
["rel" => "mentioned",
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"ostatus:object-type" => Activity\ObjectType::PERSON,
"href" => $mention]
);
}
}
self::getAttachment($doc, $entry, $item);
return $entry;
}
/**
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* encrypts data via AES
*
* @param string $data The data that is to be encrypted
* @param string $key The AES key
*
* @return string encrypted data
*/
private static function aesEncrypt($data, $key)
{
return openssl_encrypt($data, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
}
/**
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* decrypts data via AES
*
* @param string $encrypted The encrypted data
* @param string $key The AES key
*
* @return string decrypted data
*/
public static function aesDecrypt($encrypted, $key)
{
return openssl_decrypt($encrypted, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
}
/**
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* Delivers the atom content to the contacts
*
* @param array $owner Owner record
* @param array $contact Contact record of the receiver
* @param string $atom Content that will be transmitted
* @param bool $dissolve (to be documented)
*
* @return int Deliver status. Negative values mean an error.
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo Add array type-hint for $owner, $contact
*/
public static function deliver($owner, $contact, $atom, $dissolve = false)
{
$idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
if ($contact['duplex'] && $contact['dfrn-id']) {
$idtosend = '0:' . $orig_id;
}
if ($contact['duplex'] && $contact['issued-id']) {
$idtosend = '1:' . $orig_id;
}
$rino = DI::config()->get('system', 'rino_encrypt');
$rino = intval($rino);
Logger::log("Local rino version: ". $rino, Logger::DEBUG);
$ssl_val = intval(DI::config()->get('system', 'ssl_policy'));
switch ($ssl_val) {
case BaseURL::SSL_POLICY_FULL:
$ssl_policy = 'full';
break;
case BaseURL::SSL_POLICY_SELFSIGN:
$ssl_policy = 'self';
break;
case BaseURL::SSL_POLICY_NONE:
default:
$ssl_policy = 'none';
break;
}
$url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : '');
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Logger::log('dfrn_deliver: ' . $url);
$curlResult = DI::httpRequest()->get($url);
if ($curlResult->isTimeout()) {
return -2; // timed out
}
$xml = $curlResult->getBody();
$curl_stat = $curlResult->getReturnCode();
if (empty($curl_stat)) {
return -3; // timed out
}
Logger::log('dfrn_deliver: ' . $xml, Logger::DATA);
if (empty($xml)) {
return 3;
}
if (strpos($xml, '<?xml') === false) {
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Logger::log('dfrn_deliver: no valid XML returned');
Logger::log('dfrn_deliver: returned XML: ' . $xml, Logger::DATA);
return 3;
}
$res = XML::parseString($xml);
if (!is_object($res) || (intval($res->status) != 0) || !strlen($res->challenge) || !strlen($res->dfrn_id)) {
if (empty($res->status)) {
$status = 3;
} else {
$status = $res->status;
}
return $status;
}
$postvars = [];
$sent_dfrn_id = hex2bin((string) $res->dfrn_id);
$challenge = hex2bin((string) $res->challenge);
$perm = (($res->perm) ? $res->perm : null);
$dfrn_version = floatval($res->dfrn_version ?: 2.0);
$rino_remote_version = intval($res->rino);
$page = (($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY) ? 1 : 0);
Logger::log("Remote rino version: ".$rino_remote_version." for ".$contact["url"], Logger::DEBUG);
if ($owner['page-flags'] == User::PAGE_FLAGS_PRVGROUP) {
$page = 2;
}
$final_dfrn_id = '';
if ($perm) {
if ((($perm == 'rw') && !intval($contact['writable']))
|| (($perm == 'r') && intval($contact['writable']))
) {
DBA::update('contact', ['writable' => ($perm == 'rw')], ['id' => $contact['id']]);
$contact['writable'] = (string) 1 - intval($contact['writable']);
}
}
if (($contact['duplex'] && strlen($contact['pubkey']))
|| ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY && strlen($contact['pubkey']))
|| ($contact['rel'] == Contact::SHARING && strlen($contact['pubkey']))
) {
openssl_public_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['pubkey']);
openssl_public_decrypt($challenge, $postvars['challenge'], $contact['pubkey']);
} else {
openssl_private_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['prvkey']);
openssl_private_decrypt($challenge, $postvars['challenge'], $contact['prvkey']);
}
$final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
if (strpos($final_dfrn_id, ':') == 1) {
$final_dfrn_id = substr($final_dfrn_id, 2);
}
if ($final_dfrn_id != $orig_id) {
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Logger::log('dfrn_deliver: wrong dfrn_id.');
// did not decode properly - cannot trust this site
return 3;
}
$postvars['dfrn_id'] = $idtosend;
$postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
if ($dissolve) {
$postvars['dissolve'] = '1';
}
if ((($contact['rel']) && ($contact['rel'] != Contact::SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY)) {
$postvars['data'] = $atom;
$postvars['perm'] = 'rw';
} else {
$postvars['data'] = str_replace('<dfrn:comment-allow>1', '<dfrn:comment-allow>0', $atom);
$postvars['perm'] = 'r';
}
$postvars['ssl_policy'] = $ssl_policy;
if ($page) {
$postvars['page'] = $page;
}
if ($rino > 0 && $rino_remote_version > 0 && (! $dissolve)) {
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Logger::log('rino version: '. $rino_remote_version);
switch ($rino_remote_version) {
case 1:
$key = openssl_random_pseudo_bytes(16);
$data = self::aesEncrypt($postvars['data'], $key);
break;
Cleanups: isResult() more used, readability improved (#5608) * [diaspora]: Maybe SimpleXMLElement is the right type-hint? * Changes proposed + pre-renaming: - pre-renamed $db -> $connection - added TODOs for not allowing bad method invocations (there is a BadMethodCallException in SPL) * If no record is found, below $r[0] will fail with a E_NOTICE and the code doesn't behave as expected. * Ops, one more left ... * Continued: - added documentation for Contact::updateSslPolicy() method - added type-hint for $contact of same method - empty lines added + TODO where the bug origins that $item has no element 'body' * Added empty lines for better readability * Cleaned up: - no more x() (deprecated) usage but empty() instead - fixed mixing of space/tab indending - merged else/if block goether in elseif() (lesser nested code blocks) * Re-fixed DBM -> DBA switch * Fixes/rewrites: - use empty()/isset() instead of deprecated x() - merged 2 nested if() blocks into one - avoided nested if() block inside else block by rewriting it to elseif() - $contact_id is an integer, let's test on > 0 here - added a lot spaces and some empty lines for better readability * Rewrite: - moved all CONTACT_* constants from boot.php to Contact class * CR request: - renamed Contact::CONTACT_IS_* -> Contact::* ;-) * Rewrites: - moved PAGE_* to Friendica\Model\Profile class - fixed mixure with "Contact::* rewrite" * Ops, one still there (return is no function) * Rewrite to Proxy class: - introduced new Friendica\Network\Proxy class for in exchange of proxy_*() functions - moved also all PROXY_* constants there as Proxy::* - removed now no longer needed mod/proxy.php loading as composer's auto-load will do this for us - renamed those proxy_*() functions to better names: + proxy_init() -> Proxy::init() (public) + proxy_url() -> Proxy::proxifyUrl() (public) + proxy_parse_html() -> Proxy::proxifyHtml() (public) + proxy_is_local_image() -> Proxy::isLocalImage() (private) + proxy_parse_query() -> Proxy::parseQuery() (private) + proxy_img_cb() -> Proxy::replaceUrl() (private) * CR request: - moved all PAGE_* constants to Friendica\Model\Contact class - fixed all references of both classes * Ops, need to set $a here ... * CR request: - moved Proxy class to Friendica\Module - extended BaseModule * Ops, no need for own instance of $a when self::getApp() is around. * Proxy-rewrite: - proxy_url() and proxy_parse_html() are both non-module functions (now methods) - so they must be splitted into a seperate class - also the SIZE_* and DEFAULT_TIME constants are both not relevant to module * No instances from utility classes * Fixed error: - proxify*() is now located in `Friendica\Util\ProxyUtils` * Moved back to original place, ops? How did they move here? Well, it was not intended by me. * Removed duplicate (left-over from split) constants and static array. Thank to MrPetovan finding it. * Renamed ProxyUtils -> Proxy and aliased it back to ProxyUtils. * Rewrite: - stopped using deprecated NETWORK_* constants, now Protocol::* should be used - still left them intact for slow/lazy developers ... * Ops, was added accidentally ... * Ops, why these wrong moves? * Ops, one to much (thanks to MrPetovan) * Ops, wrong moving ... * moved back to original place ... * spaces added * empty lines add for better readability. * convertered spaces -> tab for code indenting. * CR request: Add space between if and brace. * CR requests fixed + move reverted - ops, src/Module/*.php has been moved to src/Network/ accidentally - reverted some parts in src/Database/DBA.php as pointed out by Annando - removed internal TODO items - added some spaces for better readability
2018-08-24 01:05:49 -04:00
default:
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Logger::log("rino: invalid requested version '$rino_remote_version'");
return -8;
}
$postvars['rino'] = $rino_remote_version;
$postvars['data'] = bin2hex($data);
if ($dfrn_version >= 2.1) {
if (($contact['duplex'] && strlen($contact['pubkey']))
|| ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY && strlen($contact['pubkey']))
|| ($contact['rel'] == Contact::SHARING && strlen($contact['pubkey']))
) {
openssl_public_encrypt($key, $postvars['key'], $contact['pubkey']);
} else {
openssl_private_encrypt($key, $postvars['key'], $contact['prvkey']);
}
} else {
if (($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY)) {
openssl_private_encrypt($key, $postvars['key'], $contact['prvkey']);
} else {
openssl_public_encrypt($key, $postvars['key'], $contact['pubkey']);
}
}
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Logger::log('md5 rawkey ' . md5($postvars['key']));
$postvars['key'] = bin2hex($postvars['key']);
}
Logger::debug('dfrn_deliver', ['post' => $postvars]);
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$postResult = DI::httpRequest()->post($contact['notify'], $postvars);
$xml = $postResult->getBody();
Logger::log('dfrn_deliver: ' . "RECEIVED: " . $xml, Logger::DATA);
$curl_stat = $postResult->getReturnCode();
if (empty($curl_stat) || empty($xml)) {
return -9; // timed out
}
if (($curl_stat == 503) && stristr($postResult->getHeader(), 'retry-after')) {
return -10;
}
if (strpos($xml, '<?xml') === false) {
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Logger::log('dfrn_deliver: phase 2: no valid XML returned');
Logger::log('dfrn_deliver: phase 2: returned XML: ' . $xml, Logger::DATA);
return 3;
}
$res = XML::parseString($xml);
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if (!isset($res->status)) {
return -11;
}
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// Possibly old servers had returned an empty value when everything was okay
if (empty($res->status)) {
$res->status = 200;
}
if (!empty($res->message)) {
Logger::log('Delivery returned status '.$res->status.' - '.$res->message, Logger::DEBUG);
}
return intval($res->status);
}
/**
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* Transmits atom content to the contacts via the Diaspora transport layer
*
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* @param array $owner Owner record
* @param array $contact Contact record of the receiver
* @param string $atom Content that will be transmitted
*
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* @param bool $public_batch
* @return int Deliver status. Negative values mean an error.
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function transmit($owner, $contact, $atom, $public_batch = false)
{
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if (!$public_batch) {
if (empty($contact['addr'])) {
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Logger::log('Empty contact handle for ' . $contact['id'] . ' - ' . $contact['url'] . ' - trying to update it.');
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if (Contact::updateFromProbe($contact['id'])) {
$new_contact = DBA::selectFirst('contact', ['addr'], ['id' => $contact['id']]);
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$contact['addr'] = $new_contact['addr'];
}
if (empty($contact['addr'])) {
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Logger::log('Unable to find contact handle for ' . $contact['id'] . ' - ' . $contact['url']);
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return -21;
}
}
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$fcontact = FContact::getByURL($contact['addr']);
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if (empty($fcontact)) {
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Logger::log('Unable to find contact details for ' . $contact['id'] . ' - ' . $contact['addr']);
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return -22;
}
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$pubkey = $fcontact['pubkey'];
} else {
$pubkey = '';
}
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$envelope = Diaspora::buildMessage($atom, $owner, $contact, $owner['uprvkey'], $pubkey, $public_batch);
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// Create the endpoint for public posts. This is some WIP and should later be added to the probing
if ($public_batch && empty($contact["batch"])) {
$parts = parse_url($contact["notify"]);
$path_parts = explode('/', $parts['path']);
array_pop($path_parts);
$parts['path'] = implode('/', $path_parts);
$contact["batch"] = Network::unparseURL($parts);
}
$dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
if (empty($dest_url)) {
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Logger::info('Empty destination', ['public' => $public_batch, 'contact' => $contact]);
return -24;
}
$content_type = ($public_batch ? "application/magic-envelope+xml" : "application/json");
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$postResult = DI::httpRequest()->post($dest_url, $envelope, ["Content-Type: " . $content_type]);
$xml = $postResult->getBody();
$curl_stat = $postResult->getReturnCode();
if (empty($curl_stat) || empty($xml)) {
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Logger::log('Empty answer from ' . $contact['id'] . ' - ' . $dest_url);
return -9; // timed out
}
if (($curl_stat == 503) && (stristr($postResult->getHeader(), 'retry-after'))) {
return -10;
}
if (strpos($xml, '<?xml') === false) {
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Logger::log('No valid XML returned from ' . $contact['id'] . ' - ' . $dest_url);
Logger::log('Returned XML: ' . $xml, Logger::DATA);
return 3;
}
$res = XML::parseString($xml);
if (empty($res->status)) {
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return -23;
}
if (!empty($res->message)) {
Logger::log('Transmit to ' . $dest_url . ' returned status '.$res->status.' - '.$res->message, Logger::DEBUG);
}
return intval($res->status);
}
/**
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* Fetch the author data from head or entry items
*
* @param object $xpath XPath object
* @param object $context In which context should the data be searched
* @param array $importer Record of the importer user mixed with contact of the content
* @param string $element Element name from which the data is fetched
* @param bool $onlyfetch Should the data only be fetched or should it update the contact record as well
* @param string $xml optional, default empty
*
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* @return array Relevant data of the author
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo Find good type-hints for all parameter
*/
private static function fetchauthor($xpath, $context, $importer, $element, $onlyfetch, $xml = "")
{
$author = [];
$author["name"] = XML::getFirstNodeValue($xpath, $element."/atom:name/text()", $context);
$author["link"] = XML::getFirstNodeValue($xpath, $element."/atom:uri/text()", $context);
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$fields = ['id', 'uid', 'url', 'network', 'avatar-date', 'avatar', 'name-date', 'uri-date', 'addr',
'name', 'nick', 'about', 'location', 'keywords', 'xmpp', 'bdyear', 'bd', 'hidden', 'contact-type'];
$condition = ["`uid` = ? AND `nurl` = ? AND `network` != ? AND NOT `pending` AND NOT `blocked`",
$importer["importer_uid"], Strings::normaliseLink($author["link"]), Protocol::STATUSNET];
if ($importer['account-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
$condition = DBA::mergeConditions($condition, ['rel' => [Contact::SHARING, Contact::FRIEND]]);
}
$contact_old = DBA::selectFirst('contact', $fields, $condition);
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if (DBA::isResult($contact_old)) {
$author["contact-id"] = $contact_old["id"];
$author["network"] = $contact_old["network"];
} else {
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Logger::info('Contact not found', ['condition' => $condition]);
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$author["contact-unknown"] = true;
$contact = Contact::getByURL($author["link"], null, ["id", "network"]);
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$author["contact-id"] = $contact["id"] ?? $importer["id"];
$author["network"] = $contact["network"] ?? $importer["network"];
$onlyfetch = true;
}
// Until now we aren't serving different sizes - but maybe later
$avatarlist = [];
/// @todo check if "avatar" or "photo" would be the best field in the specification
$avatars = $xpath->query($element . "/atom:link[@rel='avatar']", $context);
foreach ($avatars as $avatar) {
$href = "";
$width = 0;
foreach ($avatar->attributes as $attributes) {
/// @TODO Rewrite these similar if() to one switch
if ($attributes->name == "href") {
$href = $attributes->textContent;
}
if ($attributes->name == "width") {
$width = $attributes->textContent;
}
if ($attributes->name == "updated") {
$author["avatar-date"] = $attributes->textContent;
}
}
if (($width > 0) && ($href != "")) {
$avatarlist[$width] = $href;
}
}
if (count($avatarlist) > 0) {
krsort($avatarlist);
$author["avatar"] = current($avatarlist);
}
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if (empty($author['avatar']) && !empty($author['link'])) {
$cid = Contact::getIdForURL($author['link'], 0);
if (!empty($cid)) {
$contact = DBA::selectFirst('contact', ['avatar'], ['id' => $cid]);
if (DBA::isResult($contact)) {
$author['avatar'] = $contact['avatar'];
}
}
}
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if (empty($author['avatar'])) {
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Logger::log('Empty author: ' . $xml);
$author['avatar'] = '';
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}
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if (DBA::isResult($contact_old) && !$onlyfetch) {
Logger::log("Check if contact details for contact " . $contact_old["id"] . " (" . $contact_old["nick"] . ") have to be updated.", Logger::DEBUG);
$poco = ["url" => $contact_old["url"], "network" => $contact_old["network"]];
// When was the last change to name or uri?
$name_element = $xpath->query($element . "/atom:name", $context)->item(0);
foreach ($name_element->attributes as $attributes) {
if ($attributes->name == "updated") {
$poco["name-date"] = $attributes->textContent;
}
}
$link_element = $xpath->query($element . "/atom:link", $context)->item(0);
foreach ($link_element->attributes as $attributes) {
if ($attributes->name == "updated") {
$poco["uri-date"] = $attributes->textContent;
}
}
// Update contact data
$value = XML::getFirstNodeValue($xpath, $element . "/dfrn:handle/text()", $context);
if ($value != "") {
$poco["addr"] = $value;
}
$value = XML::getFirstNodeValue($xpath, $element . "/poco:displayName/text()", $context);
if ($value != "") {
$poco["name"] = $value;
}
$value = XML::getFirstNodeValue($xpath, $element . "/poco:preferredUsername/text()", $context);
if ($value != "") {
$poco["nick"] = $value;
}
$value = XML::getFirstNodeValue($xpath, $element . "/poco:note/text()", $context);
if ($value != "") {
$poco["about"] = $value;
}
$value = XML::getFirstNodeValue($xpath, $element . "/poco:address/poco:formatted/text()", $context);
if ($value != "") {
$poco["location"] = $value;
}
/// @todo Only search for elements with "poco:type" = "xmpp"
$value = XML::getFirstNodeValue($xpath, $element . "/poco:ims/poco:value/text()", $context);
if ($value != "") {
$poco["xmpp"] = $value;
}
/// @todo Add support for the following fields that we don't support by now in the contact table:
/// - poco:utcOffset
/// - poco:urls
/// - poco:locality
/// - poco:region
/// - poco:country
// If the "hide" element is present then the profile isn't searchable.
$hide = intval(XML::getFirstNodeValue($xpath, $element . "/dfrn:hide/text()", $context) == "true");
Logger::log("Hidden status for contact " . $contact_old["url"] . ": " . $hide, Logger::DEBUG);
// If the contact isn't searchable then set the contact to "hidden".
// Problem: This can be manually overridden by the user.
if ($hide) {
$contact_old["hidden"] = true;
}
// Save the keywords into the contact table
$tags = [];
$tagelements = $xpath->evaluate($element . "/poco:tags/text()", $context);
foreach ($tagelements as $tag) {
$tags[$tag->nodeValue] = $tag->nodeValue;
}
if (count($tags)) {
$poco["keywords"] = implode(", ", $tags);
}
// "dfrn:birthday" contains the birthday converted to UTC
$birthday = XML::getFirstNodeValue($xpath, $element . "/poco:birthday/text()", $context);
if (strtotime($birthday) > time()) {
$bd_timestamp = strtotime($birthday);
$poco["bdyear"] = date("Y", $bd_timestamp);
}
// "poco:birthday" is the birthday in the format "yyyy-mm-dd"
$value = XML::getFirstNodeValue($xpath, $element . "/poco:birthday/text()", $context);
if (!in_array($value, ["", "0000-00-00", DBA::NULL_DATE])) {
$bdyear = date("Y");
$value = str_replace(["0000", "0001"], $bdyear, $value);
if (strtotime($value) < time()) {
$value = str_replace($bdyear, $bdyear + 1, $value);
}
$poco["bd"] = $value;
}
$contact = array_merge($contact_old, $poco);
if ($contact_old["bdyear"] != $contact["bdyear"]) {
Event::createBirthday($contact, $birthday);
}
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$fields = ['name' => $contact['name'], 'nick' => $contact['nick'], 'about' => $contact['about'],
'location' => $contact['location'], 'addr' => $contact['addr'], 'keywords' => $contact['keywords'],
'bdyear' => $contact['bdyear'], 'bd' => $contact['bd'], 'hidden' => $contact['hidden'],
'xmpp' => $contact['xmpp'], 'name-date' => DateTimeFormat::utc($contact['name-date']),
'unsearchable' => $contact['hidden'], 'uri-date' => DateTimeFormat::utc($contact['uri-date'])];
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DBA::update('contact', $fields, ['id' => $contact['id'], 'network' => $contact['network']], $contact_old);
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// Update the public contact. Don't set the "hidden" value, this is used differently for public contacts
unset($fields['hidden']);
$condition = ['uid' => 0, 'nurl' => Strings::normaliseLink($contact_old['url'])];
DBA::update('contact', $fields, $condition, true);
Contact::updateAvatar($contact['id'], $author['avatar']);
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$pcid = Contact::getIdForURL($contact_old['url']);
if (!empty($pcid)) {
Contact::updateAvatar($pcid, $author['avatar']);
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}
}
return $author;
}
/**
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* Transforms activity objects into an XML string
*
* @param object $xpath XPath object
* @param object $activity Activity object
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* @param string $element element name
*
* @return string XML string
* @todo Find good type-hints for all parameter
*/
private static function transformActivity($xpath, $activity, $element)
{
if (!is_object($activity)) {
return "";
}
$obj_doc = new DOMDocument("1.0", "utf-8");
$obj_doc->formatOutput = true;
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$obj_element = $obj_doc->createElementNS( ActivityNamespace::ATOM1, $element);
$activity_type = $xpath->query("activity:object-type/text()", $activity)->item(0)->nodeValue;
XML::addElement($obj_doc, $obj_element, "type", $activity_type);
$id = $xpath->query("atom:id", $activity)->item(0);
if (is_object($id)) {
$obj_element->appendChild($obj_doc->importNode($id, true));
}
$title = $xpath->query("atom:title", $activity)->item(0);
if (is_object($title)) {
$obj_element->appendChild($obj_doc->importNode($title, true));
}
$links = $xpath->query("atom:link", $activity);
if (is_object($links)) {
foreach ($links as $link) {
$obj_element->appendChild($obj_doc->importNode($link, true));
}
}
$content = $xpath->query("atom:content", $activity)->item(0);
if (is_object($content)) {
$obj_element->appendChild($obj_doc->importNode($content, true));
}
$obj_doc->appendChild($obj_element);
$objxml = $obj_doc->saveXML($obj_element);
/// @todo This isn't totally clean. We should find a way to transform the namespaces
$objxml = str_replace("<".$element.' xmlns="http://www.w3.org/2005/Atom">', "<".$element.">", $objxml);
return($objxml);
}
/**
2020-01-19 01:05:23 -05:00
* Processes the mail elements
*
* @param object $xpath XPath object
* @param object $mail mail elements
* @param array $importer Record of the importer user mixed with contact of the content
* @return void
2019-01-06 16:06:53 -05:00
* @throws \Exception
* @todo Find good type-hints for all parameter
*/
private static function processMail($xpath, $mail, $importer)
{
2018-10-29 17:20:46 -04:00
Logger::log("Processing mails");
$msg = [];
$msg["uid"] = $importer["importer_uid"];
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$msg["from-name"] = XML::getFirstValue($xpath, "dfrn:sender/dfrn:name/text()", $mail);
$msg["from-url"] = XML::getFirstValue($xpath, "dfrn:sender/dfrn:uri/text()", $mail);
$msg["from-photo"] = XML::getFirstValue($xpath, "dfrn:sender/dfrn:avatar/text()", $mail);
$msg["contact-id"] = $importer["id"];
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$msg["uri"] = XML::getFirstValue($xpath, "dfrn:id/text()", $mail);
$msg["parent-uri"] = XML::getFirstValue($xpath, "dfrn:in-reply-to/text()", $mail);
2020-09-13 15:40:38 -04:00
$msg["created"] = DateTimeFormat::utc(XML::getFirstValue($xpath, "dfrn:sentdate/text()", $mail));
$msg["title"] = XML::getFirstValue($xpath, "dfrn:subject/text()", $mail);
$msg["body"] = XML::getFirstValue($xpath, "dfrn:content/text()", $mail);
2019-05-08 01:44:22 -04:00
Mail::insert($msg);
}
/**
2020-01-19 01:05:23 -05:00
* Processes the suggestion elements
*
* @param object $xpath XPath object
* @param object $suggestion suggestion elements
* @param array $importer Record of the importer user mixed with contact of the content
* @return boolean
2019-01-06 16:06:53 -05:00
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo Find good type-hints for all parameter
*/
private static function processSuggestion($xpath, $suggestion, $importer)
{
2020-09-28 17:33:40 -04:00
Logger::notice('Processing suggestions');
$url = $xpath->evaluate('string(dfrn:url[1]/text())', $suggestion);
2020-09-28 17:33:40 -04:00
$cid = Contact::getIdForURL($url);
$note = $xpath->evaluate('string(dfrn:note[1]/text())', $suggestion);
2020-09-28 17:33:40 -04:00
return FContact::addSuggestion($importer['importer_uid'], $cid, $importer['id'], $note);
}
/**
2020-01-19 01:05:23 -05:00
* Processes the relocation elements
*
* @param object $xpath XPath object
* @param object $relocation relocation elements
* @param array $importer Record of the importer user mixed with contact of the content
* @return boolean
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo Find good type-hints for all parameter
*/
private static function processRelocation($xpath, $relocation, $importer)
{
2018-10-29 17:20:46 -04:00
Logger::log("Processing relocations");
/// @TODO Rewrite this to one statement
$relocate = [];
$relocate["uid"] = $importer["importer_uid"];
$relocate["cid"] = $importer["id"];
$relocate["url"] = $xpath->query("dfrn:url/text()", $relocation)->item(0)->nodeValue;
$relocate["addr"] = $xpath->query("dfrn:addr/text()", $relocation)->item(0)->nodeValue;
$relocate["name"] = $xpath->query("dfrn:name/text()", $relocation)->item(0)->nodeValue;
$relocate["avatar"] = $xpath->query("dfrn:avatar/text()", $relocation)->item(0)->nodeValue;
$relocate["photo"] = $xpath->query("dfrn:photo/text()", $relocation)->item(0)->nodeValue;
$relocate["thumb"] = $xpath->query("dfrn:thumb/text()", $relocation)->item(0)->nodeValue;
$relocate["micro"] = $xpath->query("dfrn:micro/text()", $relocation)->item(0)->nodeValue;
$relocate["request"] = $xpath->query("dfrn:request/text()", $relocation)->item(0)->nodeValue;
$relocate["confirm"] = $xpath->query("dfrn:confirm/text()", $relocation)->item(0)->nodeValue;
$relocate["notify"] = $xpath->query("dfrn:notify/text()", $relocation)->item(0)->nodeValue;
$relocate["poll"] = $xpath->query("dfrn:poll/text()", $relocation)->item(0)->nodeValue;
$relocate["sitepubkey"] = $xpath->query("dfrn:sitepubkey/text()", $relocation)->item(0)->nodeValue;
if (($relocate["avatar"] == "") && ($relocate["photo"] != "")) {
$relocate["avatar"] = $relocate["photo"];
}
if ($relocate["addr"] == "") {
$relocate["addr"] = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$3@$2", $relocate["url"]);
}
// update contact
$r = q(
"SELECT `photo`, `url` FROM `contact` WHERE `id` = %d AND `uid` = %d",
intval($importer["id"]),
intval($importer["importer_uid"])
);
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if (!DBA::isResult($r)) {
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Logger::log("Query failed to execute, no result returned in " . __FUNCTION__);
return false;
}
$old = $r[0];
// Update the contact table. We try to find every entry.
$fields = ['name' => $relocate["name"], 'avatar' => $relocate["avatar"],
'url' => $relocate["url"], 'nurl' => Strings::normaliseLink($relocate["url"]),
'addr' => $relocate["addr"], 'request' => $relocate["request"],
'confirm' => $relocate["confirm"], 'notify' => $relocate["notify"],
'poll' => $relocate["poll"], 'site-pubkey' => $relocate["sitepubkey"]];
$condition = ["(`id` = ?) OR (`nurl` = ?)", $importer["id"], Strings::normaliseLink($old["url"])];
DBA::update('contact', $fields, $condition);
Contact::updateAvatar($importer["id"], $relocate["avatar"], true);
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Logger::log('Contacts are updated.');
/// @TODO
/// merge with current record, current contents have priority
/// update record, set url-updated
/// update profile photos
/// schedule a scan?
return true;
}
/**
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* Updates an item
*
* @param array $current the current item record
* @param array $item the new item record
* @param array $importer Record of the importer user mixed with contact of the content
* @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
* @return mixed
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo set proper type-hints (array?)
*/
private static function updateContent($current, $item, $importer, $entrytype)
{
$changed = false;
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if (self::isEditedTimestampNewer($current, $item)) {
// do not accept (ignore) an earlier edit than one we currently have.
if (DateTimeFormat::utc($item["edited"]) < $current["edited"]) {
return false;
}
$fields = ['title' => $item['title'] ?? '', 'body' => $item['body'] ?? '',
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'changed' => DateTimeFormat::utcNow(),
'edited' => DateTimeFormat::utc($item["edited"])];
$condition = ["`uri` = ? AND `uid` IN (0, ?)", $item["uri"], $importer["importer_uid"]];
Item::update($fields, $condition);
$changed = true;
}
return $changed;
}
/**
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* Detects the entry type of the item
*
* @param array $importer Record of the importer user mixed with contact of the content
* @param array $item the new item record
*
* @return int Is it a toplevel entry, a comment or a relayed comment?
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* @throws \Exception
* @todo set proper type-hints (array?)
*/
private static function getEntryType($importer, $item)
{
if ($item["thr-parent"] != $item["uri"]) {
$community = false;
if ($importer["page-flags"] == User::PAGE_FLAGS_COMMUNITY || $importer["page-flags"] == User::PAGE_FLAGS_PRVGROUP) {
$sql_extra = "";
$community = true;
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Logger::log("possible community action");
} else {
$sql_extra = " AND `self` AND `wall`";
}
// was the top-level post for this action written by somebody on this site?
// Specifically, the recipient?
$parent = Post::selectFirst(['forum_mode', 'wall'],
["`uri` = ? AND `uid` = ?" . $sql_extra, $item["thr-parent"], $importer["importer_uid"]]);
$is_a_remote_action = DBA::isResult($parent);
/*
* Does this have the characteristics of a community or private group action?
* If it's an action to a wall post on a community/prvgroup page it's a
* valid community action. Also forum_mode makes it valid for sure.
* If neither, it's not.
*/
if ($is_a_remote_action && $community && (!$parent["forum_mode"]) && (!$parent["wall"])) {
$is_a_remote_action = false;
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Logger::log("not a community action");
}
if ($is_a_remote_action) {
return DFRN::REPLY_RC;
} else {
return DFRN::REPLY;
}
} else {
return DFRN::TOP_LEVEL;
}
}
/**
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* Send a "poke"
*
* @param array $item The new item record
* @param array $importer Record of the importer user mixed with contact of the content
* @return void
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo set proper type-hints (array?)
*/
private static function doPoke(array $item, array $importer)
{
$verb = urldecode(substr($item["verb"], strpos($item["verb"], "#")+1));
if (!$verb) {
return;
}
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$xo = XML::parseString($item["object"]);
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if (($xo->type == Activity\ObjectType::PERSON) && ($xo->id)) {
// somebody was poked/prodded. Was it me?
$Blink = '';
foreach ($xo->link as $l) {
$atts = $l->attributes();
switch ($atts["rel"]) {
case "alternate":
$Blink = $atts["href"];
break;
default:
break;
}
}
if ($Blink && Strings::compareLink($Blink, DI::baseUrl() . "/profile/" . $importer["nickname"])) {
$author = DBA::selectFirst('contact', ['id', 'name', 'thumb', 'url'], ['id' => $item['author-id']]);
$parent = Post::selectFirst(['id'], ['uri' => $item['thr-parent'], 'uid' => $importer["importer_uid"]]);
$item['parent'] = $parent['id'];
// send a notification
notification(
[
"type" => Notification\Type::POKE,
"otype" => Notification\ObjectType::PERSON,
"activity" => $verb,
"verb" => $item["verb"],
"uid" => $importer["importer_uid"],
"cid" => $author["id"],
"item" => $item,
"link" => DI::baseUrl() . "/display/" . urlencode($item['guid']),
]
);
}
}
}
/**
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* Processes several actions, depending on the verb
*
* @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
* @param array $importer Record of the importer user mixed with contact of the content
* @param array $item the new item record
* @param bool $is_like Is the verb a "like"?
*
* @return bool Should the processing of the entries be continued?
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @todo set proper type-hints (array?)
*/
private static function processVerbs($entrytype, $importer, &$item, &$is_like)
{
Logger::log("Process verb ".$item["verb"]." and object-type ".$item["object-type"]." for entrytype ".$entrytype, Logger::DEBUG);
if (($entrytype == DFRN::TOP_LEVEL) && !empty($importer['id'])) {
// The filling of the the "contact" variable is done for legcy reasons
// The functions below are partly used by ostatus.php as well - where we have this variable
$contact = Contact::selectFirst([], ['id' => $importer['id']]);
$activity = DI::activity();
// Big question: Do we need these functions? They were part of the "consume_feed" function.
// This function once was responsible for DFRN and OStatus.
if ($activity->match($item["verb"], Activity::FOLLOW)) {
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Logger::log("New follower");
Contact::addRelationship($importer, $contact, $item);
return false;
}
if ($activity->match($item["verb"], Activity::UNFOLLOW)) {
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Logger::log("Lost follower");
Contact::removeFollower($importer, $contact, $item);
return false;
}
if ($activity->match($item["verb"], Activity::REQ_FRIEND)) {
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Logger::log("New friend request");
Contact::addRelationship($importer, $contact, $item, true);
return false;
}
if ($activity->match($item["verb"], Activity::UNFRIEND)) {
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Logger::log("Lost sharer");
Contact::removeSharer($importer, $contact, $item);
return false;
}
} else {
if (($item["verb"] == Activity::LIKE)
|| ($item["verb"] == Activity::DISLIKE)
|| ($item["verb"] == Activity::ATTEND)
|| ($item["verb"] == Activity::ATTENDNO)
|| ($item["verb"] == Activity::ATTENDMAYBE)
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|| ($item["verb"] == Activity::ANNOUNCE)
) {
$is_like = true;
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$item["gravity"] = GRAVITY_ACTIVITY;
// only one like or dislike per person
// split into two queries for performance issues
$condition = ['uid' => $item["uid"], 'author-id' => $item["author-id"], 'gravity' => GRAVITY_ACTIVITY,
'verb' => $item['verb'], 'parent-uri' => $item['thr-parent']];
if (Post::exists($condition)) {
return false;
}
$condition = ['uid' => $item["uid"], 'author-id' => $item["author-id"], 'gravity' => GRAVITY_ACTIVITY,
'verb' => $item['verb'], 'thr-parent' => $item['thr-parent']];
if (Post::exists($condition)) {
return false;
}
// The owner of an activity must be the author
$item["owner-name"] = $item["author-name"];
$item["owner-link"] = $item["author-link"];
$item["owner-avatar"] = $item["author-avatar"];
$item["owner-id"] = $item["author-id"];
} else {
$is_like = false;
}
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if (($item["verb"] == Activity::TAG) && ($item["object-type"] == Activity\ObjectType::TAGTERM)) {
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$xo = XML::parseString($item["object"]);
$xt = XML::parseString($item["target"]);
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if ($xt->type == Activity\ObjectType::NOTE) {
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$item_tag = Post::selectFirst(['id', 'uri-id'], ['uri' => $xt->id, 'uid' => $importer["importer_uid"]]);
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if (!DBA::isResult($item_tag)) {
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Logger::log("Query failed to execute, no result returned in " . __FUNCTION__);
return false;
}
// extract tag, if not duplicate, add to parent item
if ($xo->content) {
Tag::store($item_tag['uri-id'], Tag::HASHTAG, $xo->content);
}
}
}
}
return true;
}
/**
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* Processes the link elements
*
* @param object $links link elements
* @param array $item the item record
* @return void
* @todo set proper type-hints
*/
private static function parseLinks($links, &$item)
{
$rel = "";
$href = "";
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$type = null;
$length = null;
$title = null;
foreach ($links as $link) {
foreach ($link->attributes as $attributes) {
switch ($attributes->name) {
case "href" : $href = $attributes->textContent; break;
case "rel" : $rel = $attributes->textContent; break;
case "type" : $type = $attributes->textContent; break;
case "length": $length = $attributes->textContent; break;
case "title" : $title = $attributes->textContent; break;
}
}
if (($rel != "") && ($href != "")) {
switch ($rel) {
case "alternate":
$item["plink"] = $href;
break;
case "enclosure":
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Post\Media::insert(['uri-id' => $item['uri-id'], 'type' => Post\Media::DOCUMENT,
'url' => $href, 'mimetype' => $type, 'size' => $length, 'description' => $title]);
break;
}
}
}
}
/**
* Checks if an incoming message is wanted
*
* @param array $item
* @return boolean Is the message wanted?
*/
private static function isSolicitedMessage(array $item)
{
if (DBA::exists('contact', ["`nurl` = ? AND `uid` != ? AND `rel` IN (?, ?)",
Strings::normaliseLink($item["author-link"]), 0, Contact::FRIEND, Contact::SHARING])) {
Logger::info('Author has got followers - accepted', ['uri' => $item['uri'], 'author' => $item["author-link"]]);
return true;
}
$taglist = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG]);
$tags = array_column($taglist, 'name');
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return Relay::isSolicitedPost($tags, $item['body'], $item['author-id'], $item['uri'], Protocol::DFRN);
}
/**
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* Processes the entry elements which contain the items and comments
*
* @param array $header Array of the header elements that always stay the same
* @param object $xpath XPath object
* @param object $entry entry elements
* @param array $importer Record of the importer user mixed with contact of the content
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* @param string $xml xml
* @return void
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo Add type-hints
*/
private static function processEntry($header, $xpath, $entry, $importer, $xml, $protocol)
{
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Logger::log("Processing entries");
$item = $header;
$item["protocol"] = $protocol;
$item["source"] = $xml;
// Get the uri
$item["uri"] = XML::getFirstNodeValue($xpath, "atom:id/text()", $entry);
$item["edited"] = XML::getFirstNodeValue($xpath, "atom:updated/text()", $entry);
$current = Post::selectFirst(['id', 'uid', 'edited', 'body'],
['uri' => $item["uri"], 'uid' => $importer["importer_uid"]]
);
// Is there an existing item?
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if (DBA::isResult($current) && !self::isEditedTimestampNewer($current, $item)) {
Logger::log("Item ".$item["uri"]." (".$item['edited'].") already existed.", Logger::DEBUG);
return;
}
// Fetch the owner
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$owner = self::fetchauthor($xpath, $entry, $importer, "dfrn:owner", true, $xml);
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$owner_unknown = (isset($owner["contact-unknown"]) && $owner["contact-unknown"]);
$item["owner-name"] = $owner["name"];
$item["owner-link"] = $owner["link"];
$item["owner-avatar"] = $owner["avatar"];
$item["owner-id"] = Contact::getIdForURL($owner["link"], 0);
// fetch the author
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$author = self::fetchauthor($xpath, $entry, $importer, "atom:author", true, $xml);
$item["author-name"] = $author["name"];
$item["author-link"] = $author["link"];
$item["author-avatar"] = $author["avatar"];
$item["author-id"] = Contact::getIdForURL($author["link"], 0);
$item["title"] = XML::getFirstNodeValue($xpath, "atom:title/text()", $entry);
if (!empty($item["title"])) {
$item["post-type"] = Item::PT_ARTICLE;
} else {
$item["post-type"] = Item::PT_NOTE;
}
$item["created"] = XML::getFirstNodeValue($xpath, "atom:published/text()", $entry);
$item["body"] = XML::getFirstNodeValue($xpath, "dfrn:env/text()", $entry);
$item["body"] = str_replace([' ',"\t","\r","\n"], ['','','',''], $item["body"]);
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$item["body"] = Strings::base64UrlDecode($item["body"]);
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$item["body"] = BBCode::limitBodySize($item["body"]);
/// @todo We should check for a repeated post and if we know the repeated author.
// We don't need the content element since "dfrn:env" is always present
//$item["body"] = $xpath->query("atom:content/text()", $entry)->item(0)->nodeValue;
$item["location"] = XML::getFirstNodeValue($xpath, "dfrn:location/text()", $entry);
$item["coord"] = XML::getFirstNodeValue($xpath, "georss:point", $entry);
$item["private"] = XML::getFirstNodeValue($xpath, "dfrn:private/text()", $entry);
$unlisted = XML::getFirstNodeValue($xpath, "dfrn:unlisted/text()", $entry);
if (!empty($unlisted) && ($item['private'] != Item::PRIVATE)) {
$item['private'] = Item::UNLISTED;
}
$item["extid"] = XML::getFirstNodeValue($xpath, "dfrn:extid/text()", $entry);
if (XML::getFirstNodeValue($xpath, "dfrn:bookmark/text()", $entry) == "true") {
$item["post-type"] = Item::PT_PAGE;
}
$notice_info = $xpath->query("statusnet:notice_info", $entry);
if ($notice_info && ($notice_info->length > 0)) {
foreach ($notice_info->item(0)->attributes as $attributes) {
if ($attributes->name == "source") {
$item["app"] = strip_tags($attributes->textContent);
}
}
}
$item["guid"] = XML::getFirstNodeValue($xpath, "dfrn:diaspora_guid/text()", $entry);
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$item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
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Tag::storeFromBody($item['uri-id'], $item["body"]);
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// We store the data from "dfrn:diaspora_signature" in a different table, this is done in "Item::insert"
$dsprsig = XML::unescape(XML::getFirstNodeValue($xpath, "dfrn:diaspora_signature/text()", $entry));
if ($dsprsig != "") {
$signature = json_decode(base64_decode($dsprsig));
// We don't store the old style signatures anymore that also contained the "signature" and "signer"
if (!empty($signature->signed_text) && empty($signature->signature) && empty($signature->signer)) {
$item["diaspora_signed_text"] = $signature->signed_text;
}
}
$item["verb"] = XML::getFirstNodeValue($xpath, "activity:verb/text()", $entry);
if (XML::getFirstNodeValue($xpath, "activity:object-type/text()", $entry) != "") {
$item["object-type"] = XML::getFirstNodeValue($xpath, "activity:object-type/text()", $entry);
}
$object = $xpath->query("activity:object", $entry)->item(0);
$item["object"] = self::transformActivity($xpath, $object, "object");
if (trim($item["object"]) != "") {
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$r = XML::parseString($item["object"]);
if (isset($r->type)) {
$item["object-type"] = $r->type;
}
}
$target = $xpath->query("activity:target", $entry)->item(0);
$item["target"] = self::transformActivity($xpath, $target, "target");
$categories = $xpath->query("atom:category", $entry);
if ($categories) {
foreach ($categories as $category) {
$term = "";
$scheme = "";
foreach ($category->attributes as $attributes) {
if ($attributes->name == "term") {
$term = $attributes->textContent;
}
if ($attributes->name == "scheme") {
$scheme = $attributes->textContent;
}
}
if (($term != "") && ($scheme != "")) {
$parts = explode(":", $scheme);
if ((count($parts) >= 4) && (array_shift($parts) == "X-DFRN")) {
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$termurl = array_pop($parts);
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$termurl = array_pop($parts) . ':' . $termurl;
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Tag::store($item['uri-id'], Tag::IMPLICIT_MENTION, $term, $termurl);
}
}
}
}
$links = $xpath->query("atom:link", $entry);
if ($links) {
self::parseLinks($links, $item);
}
$item['conversation-uri'] = XML::getFirstNodeValue($xpath, 'ostatus:conversation/text()', $entry);
$conv = $xpath->query('ostatus:conversation', $entry);
if (is_object($conv->item(0))) {
foreach ($conv->item(0)->attributes as $attributes) {
if ($attributes->name == "ref") {
$item['conversation-uri'] = $attributes->textContent;
}
if ($attributes->name == "href") {
$item['conversation-href'] = $attributes->textContent;
}
}
}
// Is it a reply or a top level posting?
$item['thr-parent'] = $item['uri'];
$inreplyto = $xpath->query("thr:in-reply-to", $entry);
if (is_object($inreplyto->item(0))) {
foreach ($inreplyto->item(0)->attributes as $attributes) {
if ($attributes->name == "ref") {
$item['thr-parent'] = $attributes->textContent;
}
}
}
// Check if the message is wanted
if (($importer['importer_uid'] == 0) && ($item['uri'] == $item['thr-parent'])) {
if (!self::isSolicitedMessage($item)) {
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DBA::delete('item-uri', ['uri' => $item['uri']]);
return 403;
}
}
// Get the type of the item (Top level post, reply or remote reply)
$entrytype = self::getEntryType($importer, $item);
// Now assign the rest of the values that depend on the type of the message
if (in_array($entrytype, [DFRN::REPLY, DFRN::REPLY_RC])) {
if (!isset($item["object-type"])) {
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$item["object-type"] = Activity\ObjectType::COMMENT;
}
if ($item["contact-id"] != $owner["contact-id"]) {
$item["contact-id"] = $owner["contact-id"];
}
if (($item["network"] != $owner["network"]) && ($owner["network"] != "")) {
$item["network"] = $owner["network"];
}
if ($item["contact-id"] != $author["contact-id"]) {
$item["contact-id"] = $author["contact-id"];
}
if (($item["network"] != $author["network"]) && ($author["network"] != "")) {
$item["network"] = $author["network"];
}
}
// Ensure to have the correct share data
$item = Item::addShareDataFromOriginal($item);
if ($entrytype == DFRN::REPLY_RC) {
$item["wall"] = 1;
} elseif ($entrytype == DFRN::TOP_LEVEL) {
if (!isset($item["object-type"])) {
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$item["object-type"] = Activity\ObjectType::NOTE;
}
// Is it an event?
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if (($item["object-type"] == Activity\ObjectType::EVENT) && !$owner_unknown) {
Logger::log("Item ".$item["uri"]." seems to contain an event.", Logger::DEBUG);
$ev = Event::fromBBCode($item["body"]);
if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
Logger::log("Event in item ".$item["uri"]." was found.", Logger::DEBUG);
$ev["cid"] = $importer["id"];
$ev["uid"] = $importer["importer_uid"];
$ev["uri"] = $item["uri"];
$ev["edited"] = $item["edited"];
$ev["private"] = $item["private"];
$ev["guid"] = $item["guid"];
$ev["plink"] = $item["plink"];
$ev["network"] = $item["network"];
$ev["protocol"] = $item["protocol"];
$ev["direction"] = $item["direction"];
$ev["source"] = $item["source"];
$condition = ['uri' => $item["uri"], 'uid' => $importer["importer_uid"]];
$event = DBA::selectFirst('event', ['id'], $condition);
if (DBA::isResult($event)) {
$ev["id"] = $event["id"];
}
$event_id = Event::store($ev);
Logger::log("Event ".$event_id." was stored", Logger::DEBUG);
return;
}
}
}
if (!self::processVerbs($entrytype, $importer, $item, $is_like)) {
Logger::log("Exiting because 'processVerbs' told us so", Logger::DEBUG);
return;
}
// This check is done here to be able to receive connection requests in "processVerbs"
if (($entrytype == DFRN::TOP_LEVEL) && $owner_unknown) {
Logger::log("Item won't be stored because user " . $importer["importer_uid"] . " doesn't follow " . $item["owner-link"] . ".", Logger::DEBUG);
return;
}
// Update content if 'updated' changes
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if (DBA::isResult($current)) {
if (self::updateContent($current, $item, $importer, $entrytype)) {
Logger::log("Item ".$item["uri"]." was updated.", Logger::DEBUG);
} else {
Logger::log("Item " . $item["uri"] . " already existed.", Logger::DEBUG);
}
return;
}
if (in_array($entrytype, [DFRN::REPLY, DFRN::REPLY_RC])) {
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// Will be overwritten for sharing accounts in Item::insert
if (empty($item['post-reason']) && ($entrytype == DFRN::REPLY)) {
$item['post-reason'] = Item::PR_COMMENT;
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}
$posted_id = Item::insert($item);
if ($posted_id) {
Logger::log("Reply from contact ".$item["contact-id"]." was stored with id ".$posted_id, Logger::DEBUG);
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if ($item['uid'] == 0) {
Item::distribute($posted_id);
}
return true;
}
} else { // $entrytype == DFRN::TOP_LEVEL
if (($importer["uid"] == 0) && ($importer["importer_uid"] != 0)) {
Logger::log("Contact ".$importer["id"]." isn't known to user ".$importer["importer_uid"].". The post will be ignored.", Logger::DEBUG);
return;
}
if (!Strings::compareLink($item["owner-link"], $importer["url"])) {
/*
* The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
* but otherwise there's a possible data mixup on the sender's system.
* the tgroup delivery code called from Item::insert will correct it if it's a forum,
* but we're going to unconditionally correct it here so that the post will always be owned by our contact.
*/
Logger::log('Correcting item owner.', Logger::DEBUG);
$item["owner-link"] = $importer["url"];
$item["owner-id"] = Contact::getIdForURL($importer["url"], 0);
}
if (($importer["rel"] == Contact::FOLLOWER) && (!self::tgroupCheck($importer["importer_uid"], $item))) {
Logger::log("Contact ".$importer["id"]." is only follower and tgroup check was negative.", Logger::DEBUG);
return;
}
// This is my contact on another system, but it's really me.
// Turn this into a wall post.
$notify = Item::isRemoteSelf($importer, $item);
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$posted_id = Item::insert($item, $notify);
if ($notify) {
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$posted_id = $notify;
}
Logger::log("Item was stored with id ".$posted_id, Logger::DEBUG);
if ($item['uid'] == 0) {
Item::distribute($posted_id);
}
if (stristr($item["verb"], Activity::POKE)) {
$item['id'] = $posted_id;
self::doPoke($item, $importer);
}
}
}
/**
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* Deletes items
*
* @param object $xpath XPath object
* @param object $deletion deletion elements
* @param array $importer Record of the importer user mixed with contact of the content
* @return void
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* @throws \Exception
* @todo set proper type-hints
*/
private static function processDeletion($xpath, $deletion, $importer)
{
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Logger::log("Processing deletions");
$uri = null;
foreach ($deletion->attributes as $attributes) {
if ($attributes->name == "ref") {
$uri = $attributes->textContent;
}
}
if (!$uri || !$importer["id"]) {
return false;
}
$condition = ['uri' => $uri, 'uid' => $importer["importer_uid"]];
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$item = Post::selectFirst(['id', 'parent', 'contact-id', 'uri-id', 'deleted', 'gravity'], $condition);
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if (!DBA::isResult($item)) {
Logger::log("Item with uri " . $uri . " for user " . $importer["importer_uid"] . " wasn't found.", Logger::DEBUG);
return;
}
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if (DBA::exists('post-category', ['uri-id' => $item['uri-id'], 'uid' => $importer['importer_uid'], 'type' => Post\Category::FILE])) {
Logger::notice("Item is filed. It won't be deleted.", ['uri' => $uri, 'uri-id' => $item['uri_id'], 'uid' => $importer["importer_uid"]]);
return;
}
// When it is a starting post it has to belong to the person that wants to delete it
if (($item['gravity'] == GRAVITY_PARENT) && ($item['contact-id'] != $importer["id"])) {
Logger::log("Item with uri " . $uri . " don't belong to contact " . $importer["id"] . " - ignoring deletion.", Logger::DEBUG);
return;
}
// Comments can be deleted by the thread owner or comment owner
if (($item['gravity'] != GRAVITY_PARENT) && ($item['contact-id'] != $importer["id"])) {
$condition = ['id' => $item['parent'], 'contact-id' => $importer["id"]];
if (!Post::exists($condition)) {
Logger::log("Item with uri " . $uri . " wasn't found or mustn't be deleted by contact " . $importer["id"] . " - ignoring deletion.", Logger::DEBUG);
return;
}
}
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if ($item["deleted"]) {
return;
}
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Logger::log('deleting item '.$item['id'].' uri='.$uri, Logger::DEBUG);
Item::markForDeletion(['id' => $item['id']]);
}
/**
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* Imports a DFRN message
*
* @param string $xml The DFRN message
* @param array $importer Record of the importer user mixed with contact of the content
* @param int $protocol Transport protocol
* @param int $direction Is the message pushed or pulled?
* @return integer Import status
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @todo set proper type-hints
*/
public static function import($xml, $importer, $protocol, $direction)
{
if ($xml == "") {
return 400;
}
$doc = new DOMDocument();
@$doc->loadXML($xml);
$xpath = new DOMXPath($doc);
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$xpath->registerNamespace("atom", ActivityNamespace::ATOM1);
$xpath->registerNamespace("thr", ActivityNamespace::THREAD);
$xpath->registerNamespace("at", ActivityNamespace::TOMB);
$xpath->registerNamespace("media", ActivityNamespace::MEDIA);
$xpath->registerNamespace("dfrn", ActivityNamespace::DFRN);
$xpath->registerNamespace("activity", ActivityNamespace::ACTIVITY);
$xpath->registerNamespace("georss", ActivityNamespace::GEORSS);
$xpath->registerNamespace("poco", ActivityNamespace::POCO);
$xpath->registerNamespace("ostatus", ActivityNamespace::OSTATUS);
$xpath->registerNamespace("statusnet", ActivityNamespace::STATUSNET);
$header = [];
$header["uid"] = $importer["importer_uid"];
$header["network"] = Protocol::DFRN;
$header["wall"] = 0;
$header["origin"] = 0;
$header["contact-id"] = $importer["id"];
$header["direction"] = $direction;
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if ($direction === Conversation::RELAY) {
$header['post-reason'] = Item::PR_RELAY;
}
// Update the contact table if the data has changed
// The "atom:author" is only present in feeds
if ($xpath->query("/atom:feed/atom:author")->length > 0) {
self::fetchauthor($xpath, $doc->firstChild, $importer, "atom:author", false, $xml);
}
// Only the "dfrn:owner" in the head section contains all data
if ($xpath->query("/atom:feed/dfrn:owner")->length > 0) {
self::fetchauthor($xpath, $doc->firstChild, $importer, "dfrn:owner", false, $xml);
}
Logger::log("Import DFRN message for user " . $importer["importer_uid"] . " from contact " . $importer["id"], Logger::DEBUG);
if (!empty($importer['gsid'])) {
if ($protocol == Conversation::PARCEL_DIASPORA_DFRN) {
GServer::setProtocol($importer['gsid'], Post\DeliveryData::DFRN);
} elseif ($protocol == Conversation::PARCEL_LEGACY_DFRN) {
GServer::setProtocol($importer['gsid'], Post\DeliveryData::LEGACY_DFRN);
}
}
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// is it a public forum? Private forums aren't exposed with this method
$forum = intval(XML::getFirstNodeValue($xpath, "/atom:feed/dfrn:community/text()"));
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// The account type is new since 3.5.1
if ($xpath->query("/atom:feed/dfrn:account_type")->length > 0) {
// Hint: We are using separate update calls for uid=0 and uid!=0 since a combined call is bad for the database performance
$accounttype = intval(XML::getFirstNodeValue($xpath, "/atom:feed/dfrn:account_type/text()"));
if ($accounttype != $importer["contact-type"]) {
DBA::update('contact', ['contact-type' => $accounttype], ['id' => $importer['id']]);
// Updating the public contact as well
DBA::update('contact', ['contact-type' => $accounttype], ['uid' => 0, 'nurl' => $importer['nurl']]);
}
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// A forum contact can either have set "forum" or "prv" - but not both
if ($accounttype == User::ACCOUNT_TYPE_COMMUNITY) {
// It's a forum, so either set the public or private forum flag
$condition = ['(`forum` != ? OR `prv` != ?) AND `id` = ?', $forum, !$forum, $importer['id']];
DBA::update('contact', ['forum' => $forum, 'prv' => !$forum], $condition);
// Updating the public contact as well
$condition = ['(`forum` != ? OR `prv` != ?) AND `uid` = 0 AND `nurl` = ?', $forum, !$forum, $importer['nurl']];
DBA::update('contact', ['forum' => $forum, 'prv' => !$forum], $condition);
} else {
// It's not a forum, so remove the flags
$condition = ['(`forum` OR `prv`) AND `id` = ?', $importer['id']];
DBA::update('contact', ['forum' => false, 'prv' => false], $condition);
// Updating the public contact as well
$condition = ['(`forum` OR `prv`) AND `uid` = 0 AND `nurl` = ?', $importer['nurl']];
DBA::update('contact', ['forum' => false, 'prv' => false], $condition);
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}
} elseif ($forum != $importer["forum"]) { // Deprecated since 3.5.1
$condition = ['`forum` != ? AND `id` = ?', $forum, $importer["id"]];
DBA::update('contact', ['forum' => $forum], $condition);
// Updating the public contact as well
$condition = ['`forum` != ? AND `uid` = 0 AND `nurl` = ?', $forum, $importer['nurl']];
DBA::update('contact', ['forum' => $forum], $condition);
}
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// We are processing relocations even if we are ignoring a contact
$relocations = $xpath->query("/atom:feed/dfrn:relocate");
foreach ($relocations as $relocation) {
self::processRelocation($xpath, $relocation, $importer);
}
if (($importer["uid"] != 0) && !$importer["readonly"]) {
$mails = $xpath->query("/atom:feed/dfrn:mail");
foreach ($mails as $mail) {
self::processMail($xpath, $mail, $importer);
}
$suggestions = $xpath->query("/atom:feed/dfrn:suggest");
foreach ($suggestions as $suggestion) {
self::processSuggestion($xpath, $suggestion, $importer);
}
}
$deletions = $xpath->query("/atom:feed/at:deleted-entry");
if (!empty($deletions)) {
foreach ($deletions as $deletion) {
self::processDeletion($xpath, $deletion, $importer);
}
if (count($deletions) > 0) {
Logger::notice('Deletions had been processed');
return 200;
}
}
$entries = $xpath->query("/atom:feed/atom:entry");
foreach ($entries as $entry) {
self::processEntry($header, $xpath, $entry, $importer, $xml, $protocol);
}
Logger::log("Import done for user " . $importer["importer_uid"] . " from contact " . $importer["id"], Logger::DEBUG);
return 200;
}
/**
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* Returns the activity verb
*
* @param array $item Item array
*
* @return string activity verb
*/
private static function constructVerb(array $item)
{
if ($item['verb']) {
return $item['verb'];
}
return Activity::POST;
}
private static function tgroupCheck($uid, $item)
{
$mention = false;
// check that the message originated elsewhere and is a top-level post
if ($item['wall'] || $item['origin'] || ($item['uri'] != $item['thr-parent'])) {
return false;
}
$user = DBA::selectFirst('user', ['page-flags', 'nickname'], ['uid' => $uid]);
if (!DBA::isResult($user)) {
return false;
}
$community_page = ($user['page-flags'] == User::PAGE_FLAGS_COMMUNITY);
$prvgroup = ($user['page-flags'] == User::PAGE_FLAGS_PRVGROUP);
$link = Strings::normaliseLink(DI::baseUrl() . '/profile/' . $user['nickname']);
/*
* Diaspora uses their own hardwired link URL in @-tags
* instead of the one we supply with webfinger
*/
$dlink = Strings::normaliseLink(DI::baseUrl() . '/u/' . $user['nickname']);
$cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism', $item['body'], $matches, PREG_SET_ORDER);
if ($cnt) {
foreach ($matches as $mtch) {
if (Strings::compareLink($link, $mtch[1]) || Strings::compareLink($dlink, $mtch[1])) {
$mention = true;
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Logger::log('mention found: ' . $mtch[2]);
}
}
}
if (!$mention) {
return false;
}
return $community_page || $prvgroup;
}
/**
* This function returns true if $update has an edited timestamp newer
* than $existing, i.e. $update contains new data which should override
* what's already there. If there is no timestamp yet, the update is
* assumed to be newer. If the update has no timestamp, the existing
* item is assumed to be up-to-date. If the timestamps are equal it
* assumes the update has been seen before and should be ignored.
*
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* @param $existing
* @param $update
* @return bool
* @throws \Exception
*/
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private static function isEditedTimestampNewer($existing, $update)
{
if (empty($existing['edited'])) {
return true;
}
if (empty($update['edited'])) {
return false;
}
$existing_edited = DateTimeFormat::utc($existing['edited']);
$update_edited = DateTimeFormat::utc($update['edited']);
return (strcmp($existing_edited, $update_edited) < 0);
}
/**
* Checks if the given contact url does support DFRN
*
* @param string $url profile url
* @return boolean
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
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public static function isSupportedByContactUrl($url)
{
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$probe = Probe::uri($url, Protocol::DFRN);
return $probe['network'] == Protocol::DFRN;
}
}