3 * @copyright Copyright (C) 2020, Friendica
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 namespace Friendica\Protocol;
26 use Friendica\App\BaseURL;
27 use Friendica\Content\Text\BBCode;
28 use Friendica\Core\Hook;
29 use Friendica\Core\Logger;
30 use Friendica\Core\Protocol;
31 use Friendica\Database\DBA;
33 use Friendica\Model\Contact;
34 use Friendica\Model\Conversation;
35 use Friendica\Model\Event;
36 use Friendica\Model\FContact;
37 use Friendica\Model\Item;
38 use Friendica\Model\ItemURI;
39 use Friendica\Model\Mail;
40 use Friendica\Model\Notify\Type;
41 use Friendica\Model\PermissionSet;
42 use Friendica\Model\Post\Category;
43 use Friendica\Model\Profile;
44 use Friendica\Model\Tag;
45 use Friendica\Model\User;
46 use Friendica\Model\Verb;
47 use Friendica\Network\Probe;
48 use Friendica\Util\Crypto;
49 use Friendica\Util\DateTimeFormat;
50 use Friendica\Util\Images;
51 use Friendica\Util\Network;
52 use Friendica\Util\Strings;
53 use Friendica\Util\XML;
56 * This class contain functions to create and send DFRN XML files
61 const TOP_LEVEL = 0; // Top level posting
62 const REPLY = 1; // Regular reply that is stored locally
63 const REPLY_RC = 2; // Reply that will be relayed
66 * Generates an array of contact and user for DFRN imports
68 * This array contains not only the receiver but also the sender of the message.
70 * @param integer $cid Contact id
71 * @param integer $uid User id
73 * @return array importer
76 public static function getImporter($cid, $uid = 0)
78 $condition = ['id' => $cid, 'blocked' => false, 'pending' => false];
79 $contact = DBA::selectFirst('contact', [], $condition);
80 if (!DBA::isResult($contact)) {
84 $contact['cpubkey'] = $contact['pubkey'];
85 $contact['cprvkey'] = $contact['prvkey'];
86 $contact['senderName'] = $contact['name'];
89 $condition = ['uid' => $uid, 'account_expired' => false, 'account_removed' => false];
90 $user = DBA::selectFirst('user', [], $condition);
91 if (!DBA::isResult($user)) {
95 $user['importer_uid'] = $user['uid'];
96 $user['uprvkey'] = $user['prvkey'];
98 $user = ['importer_uid' => 0, 'uprvkey' => '', 'timezone' => 'UTC',
99 'nickname' => '', 'sprvkey' => '', 'spubkey' => '',
100 'page-flags' => 0, 'account-type' => 0, 'prvnets' => 0];
103 return array_merge($contact, $user);
107 * Generates the atom entries for delivery.php
109 * This function is used whenever content is transmitted via DFRN.
111 * @param array $items Item elements
112 * @param array $owner Owner record
114 * @return string DFRN entries
115 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
116 * @throws \ImagickException
117 * @todo Find proper type-hints
119 public static function entries($items, $owner)
121 $doc = new DOMDocument('1.0', 'utf-8');
122 $doc->formatOutput = true;
124 $root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
126 if (! count($items)) {
127 return trim($doc->saveXML());
130 foreach ($items as $item) {
131 // These values aren't sent when sending from the queue.
132 /// @todo Check if we can set these values from the queue or if they are needed at all.
133 $item["entry:comment-allow"] = ($item["entry:comment-allow"] ?? '') ?: true;
134 $item["entry:cid"] = $item["entry:cid"] ?? 0;
136 $entry = self::entry($doc, "text", $item, $owner, $item["entry:comment-allow"], $item["entry:cid"]);
138 $root->appendChild($entry);
142 return trim($doc->saveXML());
146 * Generate an atom feed for the given user
148 * This function is called when another server is pulling data from the user feed.
150 * @param string $dfrn_id DFRN ID from the requesting party
151 * @param string $owner_nick Owner nick name
152 * @param string $last_update Date of the last update
153 * @param int $direction Can be -1, 0 or 1.
154 * @param boolean $onlyheader Output only the header without content? (Default is "no")
156 * @return string DFRN feed entries
157 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
158 * @throws \ImagickException
160 public static function feed($dfrn_id, $owner_nick, $last_update, $direction = 0, $onlyheader = false)
164 $sitefeed = ((strlen($owner_nick)) ? false : true); // not yet implemented, need to rewrite huge chunks of following logic
165 $public_feed = (($dfrn_id) ? false : true);
166 $starred = false; // not yet implemented, possible security issues
169 if ($public_feed && $a->argc > 2) {
170 for ($x = 2; $x < $a->argc; $x++) {
171 if ($a->argv[$x] == 'converse') {
174 if ($a->argv[$x] == 'starred') {
177 if ($a->argv[$x] == 'category' && $a->argc > ($x + 1) && strlen($a->argv[$x+1])) {
178 $category = $a->argv[$x+1];
183 // default permissions - anonymous user
185 $sql_extra = sprintf(" AND `item`.`private` != %s ", Item::PRIVATE);
187 $owner = DBA::selectFirst('owner-view', [], ['nickname' => $owner_nick]);
188 if (!DBA::isResult($owner)) {
189 Logger::log(sprintf('No contact found for nickname=%d', $owner_nick), Logger::WARNING);
193 $owner_id = $owner['uid'];
195 $sql_post_table = "";
197 if (! $public_feed) {
198 switch ($direction) {
200 $sql_extra = sprintf(" AND `issued-id` = '%s' ", DBA::escape($dfrn_id));
203 $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", DBA::escape($dfrn_id));
206 $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", DBA::escape($dfrn_id));
214 "SELECT * FROM `contact` WHERE NOT `blocked` AND `contact`.`uid` = %d $sql_extra LIMIT 1",
218 if (! DBA::isResult($r)) {
219 Logger::log(sprintf('No contact found for uid=%d', $owner_id), Logger::WARNING);
225 $set = PermissionSet::get($owner_id, $contact['id']);
228 $sql_extra = " AND `item`.`psid` IN (" . implode(',', $set) .")";
230 $sql_extra = sprintf(" AND `item`.`private` != %s", Item::PRIVATE);
240 if (! strlen($last_update)) {
241 $last_update = 'now -30 days';
244 if (isset($category)) {
245 $sql_post_table = sprintf("INNER JOIN (SELECT `uri-id` FROM `category-view` WHERE `name` = '%s' AND `type` = %d AND `uid` = %d ORDER BY `uri-id` DESC) AS `category` ON `item`.`uri-id` = `category`.`uri-id` ",
246 DBA::escape(Strings::protectSprintf($category)), intval(Category::CATEGORY), intval($owner_id));
249 if ($public_feed && ! $converse) {
250 $sql_extra .= " AND `contact`.`self` = 1 ";
253 $check_date = DateTimeFormat::utc($last_update);
257 FROM `item` USE INDEX (`uid_wall_changed`) $sql_post_table
258 STRAIGHT_JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
259 WHERE `item`.`uid` = %d AND `item`.`wall` AND `item`.`changed` > '%s'
260 AND `vid` != %d AND `item`.`visible` $sql_extra
261 ORDER BY `item`.`parent` ".$sort.", `item`.`received` ASC LIMIT 0, 300",
263 DBA::escape($check_date),
264 Verb::getID(Activity::ANNOUNCE),
269 foreach ($r as $item) {
270 $ids[] = $item['id'];
274 $ret = Item::select(Item::DELIVER_FIELDLIST, ['id' => $ids]);
275 $items = Item::inArray($ret);
281 * Will check further below if this actually returned results.
282 * We will provide an empty feed if that is the case.
285 $doc = new DOMDocument('1.0', 'utf-8');
286 $doc->formatOutput = true;
288 $alternatelink = $owner['url'];
290 if (isset($category)) {
291 $alternatelink .= "/category/".$category;
295 $author = "dfrn:owner";
300 $root = self::addHeader($doc, $owner, $author, $alternatelink, true);
302 /// @TODO This hook can't work anymore
303 // \Friendica\Core\Hook::callAll('atom_feed', $atom);
305 if (!DBA::isResult($items) || $onlyheader) {
306 $atom = trim($doc->saveXML());
308 Hook::callAll('atom_feed_end', $atom);
313 foreach ($items as $item) {
314 // prevent private email from leaking.
315 if ($item['network'] == Protocol::MAIL) {
319 // public feeds get html, our own nodes use bbcode
323 // catch any email that's in a public conversation and make sure it doesn't leak
324 if ($item['private'] == Item::PRIVATE) {
331 $entry = self::entry($doc, $type, $item, $owner, true);
333 $root->appendChild($entry);
337 $atom = trim($doc->saveXML());
339 Hook::callAll('atom_feed_end', $atom);
345 * Generate an atom entry for a given item id
347 * @param int $item_id The item id
348 * @param boolean $conversation Show the conversation. If false show the single post.
350 * @return string DFRN feed entry
351 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
352 * @throws \ImagickException
354 public static function itemFeed($item_id, $conversation = false)
357 $condition = ['parent' => $item_id];
359 $condition = ['id' => $item_id];
362 $ret = Item::select(Item::DELIVER_FIELDLIST, $condition);
363 $items = Item::inArray($ret);
364 if (!DBA::isResult($items)) {
370 if ($item['uid'] != 0) {
371 $owner = User::getOwnerDataById($item['uid']);
376 $owner = ['uid' => 0, 'nick' => 'feed-item'];
379 $doc = new DOMDocument('1.0', 'utf-8');
380 $doc->formatOutput = true;
384 $root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
385 $doc->appendChild($root);
387 $root->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
388 $root->setAttribute("xmlns:at", ActivityNamespace::TOMB);
389 $root->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
390 $root->setAttribute("xmlns:dfrn", ActivityNamespace::DFRN);
391 $root->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
392 $root->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
393 $root->setAttribute("xmlns:poco", ActivityNamespace::POCO);
394 $root->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
395 $root->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
397 //$root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
399 foreach ($items as $item) {
400 $entry = self::entry($doc, $type, $item, $owner, true, 0);
402 $root->appendChild($entry);
406 self::entry($doc, $type, $item, $owner, true, 0, true);
409 $atom = trim($doc->saveXML());
414 * Create XML text for DFRN mails
416 * @param array $item message elements
417 * @param array $owner Owner record
419 * @return string DFRN mail
420 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
421 * @todo Find proper type-hints
423 public static function mail($item, $owner)
425 $doc = new DOMDocument('1.0', 'utf-8');
426 $doc->formatOutput = true;
428 $root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
430 $mail = $doc->createElement("dfrn:mail");
431 $sender = $doc->createElement("dfrn:sender");
433 XML::addElement($doc, $sender, "dfrn:name", $owner['name']);
434 XML::addElement($doc, $sender, "dfrn:uri", $owner['url']);
435 XML::addElement($doc, $sender, "dfrn:avatar", $owner['thumb']);
437 $mail->appendChild($sender);
439 XML::addElement($doc, $mail, "dfrn:id", $item['uri']);
440 XML::addElement($doc, $mail, "dfrn:in-reply-to", $item['parent-uri']);
441 XML::addElement($doc, $mail, "dfrn:sentdate", DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM));
442 XML::addElement($doc, $mail, "dfrn:subject", $item['title']);
443 XML::addElement($doc, $mail, "dfrn:content", $item['body']);
445 $root->appendChild($mail);
447 return trim($doc->saveXML());
451 * Create XML text for DFRN friend suggestions
453 * @param array $item suggestion elements
454 * @param array $owner Owner record
456 * @return string DFRN suggestions
457 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
458 * @todo Find proper type-hints
460 public static function fsuggest($item, $owner)
462 $doc = new DOMDocument('1.0', 'utf-8');
463 $doc->formatOutput = true;
465 $root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
467 $suggest = $doc->createElement("dfrn:suggest");
469 XML::addElement($doc, $suggest, "dfrn:url", $item['url']);
470 XML::addElement($doc, $suggest, "dfrn:name", $item['name']);
471 XML::addElement($doc, $suggest, "dfrn:photo", $item['photo']);
472 XML::addElement($doc, $suggest, "dfrn:request", $item['request']);
473 XML::addElement($doc, $suggest, "dfrn:note", $item['note']);
475 $root->appendChild($suggest);
477 return trim($doc->saveXML());
481 * Create XML text for DFRN relocations
483 * @param array $owner Owner record
484 * @param int $uid User ID
486 * @return string DFRN relocations
487 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
488 * @todo Find proper type-hints
490 public static function relocate($owner, $uid)
493 /* get site pubkey. this could be a new installation with no site keys*/
494 $pubkey = DI::config()->get('system', 'site_pubkey');
496 $res = Crypto::newKeypair(1024);
497 DI::config()->set('system', 'site_prvkey', $res['prvkey']);
498 DI::config()->set('system', 'site_pubkey', $res['pubkey']);
502 "SELECT `resource-id` , `scale`, type FROM `photo`
503 WHERE `profile` = 1 AND `uid` = %d ORDER BY scale;",
507 $ext = Images::supportedTypes();
509 foreach ($rp as $p) {
510 $photos[$p['scale']] = DI::baseUrl().'/photo/'.$p['resource-id'].'-'.$p['scale'].'.'.$ext[$p['type']];
514 $doc = new DOMDocument('1.0', 'utf-8');
515 $doc->formatOutput = true;
517 $root = self::addHeader($doc, $owner, "dfrn:owner", "", false);
519 $relocate = $doc->createElement("dfrn:relocate");
521 XML::addElement($doc, $relocate, "dfrn:url", $owner['url']);
522 XML::addElement($doc, $relocate, "dfrn:name", $owner['name']);
523 XML::addElement($doc, $relocate, "dfrn:addr", $owner['addr']);
524 XML::addElement($doc, $relocate, "dfrn:avatar", $owner['avatar']);
525 XML::addElement($doc, $relocate, "dfrn:photo", $photos[4]);
526 XML::addElement($doc, $relocate, "dfrn:thumb", $photos[5]);
527 XML::addElement($doc, $relocate, "dfrn:micro", $photos[6]);
528 XML::addElement($doc, $relocate, "dfrn:request", $owner['request']);
529 XML::addElement($doc, $relocate, "dfrn:confirm", $owner['confirm']);
530 XML::addElement($doc, $relocate, "dfrn:notify", $owner['notify']);
531 XML::addElement($doc, $relocate, "dfrn:poll", $owner['poll']);
532 XML::addElement($doc, $relocate, "dfrn:sitepubkey", DI::config()->get('system', 'site_pubkey'));
534 $root->appendChild($relocate);
536 return trim($doc->saveXML());
540 * Adds the header elements for the DFRN protocol
542 * @param DOMDocument $doc XML document
543 * @param array $owner Owner record
544 * @param string $authorelement Element name for the author
545 * @param string $alternatelink link to profile or category
546 * @param bool $public Is it a header for public posts?
548 * @return object XML root object
549 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
550 * @todo Find proper type-hints
552 private static function addHeader(DOMDocument $doc, $owner, $authorelement, $alternatelink = "", $public = false)
555 if ($alternatelink == "") {
556 $alternatelink = $owner['url'];
559 $root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
560 $doc->appendChild($root);
562 $root->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
563 $root->setAttribute("xmlns:at", ActivityNamespace::TOMB);
564 $root->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
565 $root->setAttribute("xmlns:dfrn", ActivityNamespace::DFRN);
566 $root->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
567 $root->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
568 $root->setAttribute("xmlns:poco", ActivityNamespace::POCO);
569 $root->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
570 $root->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
572 XML::addElement($doc, $root, "id", DI::baseUrl()."/profile/".$owner["nick"]);
573 XML::addElement($doc, $root, "title", $owner["name"]);
575 $attributes = ["uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION."-".DB_UPDATE_VERSION];
576 XML::addElement($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
578 $attributes = ["rel" => "license", "href" => "http://creativecommons.org/licenses/by/3.0/"];
579 XML::addElement($doc, $root, "link", "", $attributes);
581 $attributes = ["rel" => "alternate", "type" => "text/html", "href" => $alternatelink];
582 XML::addElement($doc, $root, "link", "", $attributes);
586 // DFRN itself doesn't uses this. But maybe someone else wants to subscribe to the public feed.
587 OStatus::hublinks($doc, $root, $owner["nick"]);
589 $attributes = ["rel" => "salmon", "href" => DI::baseUrl()."/salmon/".$owner["nick"]];
590 XML::addElement($doc, $root, "link", "", $attributes);
592 $attributes = ["rel" => "http://salmon-protocol.org/ns/salmon-replies", "href" => DI::baseUrl()."/salmon/".$owner["nick"]];
593 XML::addElement($doc, $root, "link", "", $attributes);
595 $attributes = ["rel" => "http://salmon-protocol.org/ns/salmon-mention", "href" => DI::baseUrl()."/salmon/".$owner["nick"]];
596 XML::addElement($doc, $root, "link", "", $attributes);
599 // For backward compatibility we keep this element
600 if ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY) {
601 XML::addElement($doc, $root, "dfrn:community", 1);
604 // The former element is replaced by this one
605 XML::addElement($doc, $root, "dfrn:account_type", $owner["account-type"]);
607 /// @todo We need a way to transmit the different page flags like "User::PAGE_FLAGS_PRVGROUP"
609 XML::addElement($doc, $root, "updated", DateTimeFormat::utcNow(DateTimeFormat::ATOM));
611 $author = self::addAuthor($doc, $owner, $authorelement, $public);
612 $root->appendChild($author);
618 * Adds the author element in the header for the DFRN protocol
620 * @param DOMDocument $doc XML document
621 * @param array $owner Owner record
622 * @param string $authorelement Element name for the author
623 * @param boolean $public boolean
625 * @return \DOMElement XML author object
626 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
627 * @todo Find proper type-hints
629 private static function addAuthor(DOMDocument $doc, array $owner, $authorelement, $public)
631 // Should the profile be "unsearchable" in the net? Then add the "hide" element
632 $hide = DBA::exists('profile', ['uid' => $owner['uid'], 'net-publish' => false]);
634 $author = $doc->createElement($authorelement);
636 $namdate = DateTimeFormat::utc($owner['name-date'].'+00:00', DateTimeFormat::ATOM);
637 $picdate = DateTimeFormat::utc($owner['avatar-date'].'+00:00', DateTimeFormat::ATOM);
641 if (!$public || !$hide) {
642 $attributes = ["dfrn:updated" => $namdate];
645 XML::addElement($doc, $author, "name", $owner["name"], $attributes);
646 XML::addElement($doc, $author, "uri", DI::baseUrl().'/profile/'.$owner["nickname"], $attributes);
647 XML::addElement($doc, $author, "dfrn:handle", $owner["addr"], $attributes);
649 $attributes = ["rel" => "photo", "type" => "image/jpeg",
650 "media:width" => 300, "media:height" => 300, "href" => $owner['photo']];
652 if (!$public || !$hide) {
653 $attributes["dfrn:updated"] = $picdate;
656 XML::addElement($doc, $author, "link", "", $attributes);
658 $attributes["rel"] = "avatar";
659 XML::addElement($doc, $author, "link", "", $attributes);
662 XML::addElement($doc, $author, "dfrn:hide", "true");
665 // The following fields will only be generated if the data isn't meant for a public feed
670 $birthday = feed_birthday($owner['uid'], $owner['timezone']);
673 XML::addElement($doc, $author, "dfrn:birthday", $birthday);
676 // Only show contact details when we are allowed to
677 $profile = DBA::selectFirst('owner-view',
678 ['about', 'name', 'homepage', 'nickname', 'timezone', 'locality', 'region', 'country-name', 'pub_keywords', 'xmpp', 'dob'],
679 ['uid' => $owner['uid'], 'hidewall' => false]);
680 if (DBA::isResult($profile)) {
681 XML::addElement($doc, $author, "poco:displayName", $profile["name"]);
682 XML::addElement($doc, $author, "poco:updated", $namdate);
684 if (trim($profile["dob"]) > DBA::NULL_DATE) {
685 XML::addElement($doc, $author, "poco:birthday", "0000-".date("m-d", strtotime($profile["dob"])));
688 XML::addElement($doc, $author, "poco:note", $profile["about"]);
689 XML::addElement($doc, $author, "poco:preferredUsername", $profile["nickname"]);
691 $savetz = date_default_timezone_get();
692 date_default_timezone_set($profile["timezone"]);
693 XML::addElement($doc, $author, "poco:utcOffset", date("P"));
694 date_default_timezone_set($savetz);
696 if (trim($profile["homepage"]) != "") {
697 $urls = $doc->createElement("poco:urls");
698 XML::addElement($doc, $urls, "poco:type", "homepage");
699 XML::addElement($doc, $urls, "poco:value", $profile["homepage"]);
700 XML::addElement($doc, $urls, "poco:primary", "true");
701 $author->appendChild($urls);
704 if (trim($profile["pub_keywords"]) != "") {
705 $keywords = explode(",", $profile["pub_keywords"]);
707 foreach ($keywords as $keyword) {
708 XML::addElement($doc, $author, "poco:tags", trim($keyword));
712 if (trim($profile["xmpp"]) != "") {
713 $ims = $doc->createElement("poco:ims");
714 XML::addElement($doc, $ims, "poco:type", "xmpp");
715 XML::addElement($doc, $ims, "poco:value", $profile["xmpp"]);
716 XML::addElement($doc, $ims, "poco:primary", "true");
717 $author->appendChild($ims);
720 if (trim($profile["locality"].$profile["region"].$profile["country-name"]) != "") {
721 $element = $doc->createElement("poco:address");
723 XML::addElement($doc, $element, "poco:formatted", Profile::formatLocation($profile));
725 if (trim($profile["locality"]) != "") {
726 XML::addElement($doc, $element, "poco:locality", $profile["locality"]);
729 if (trim($profile["region"]) != "") {
730 XML::addElement($doc, $element, "poco:region", $profile["region"]);
733 if (trim($profile["country-name"]) != "") {
734 XML::addElement($doc, $element, "poco:country", $profile["country-name"]);
737 $author->appendChild($element);
745 * Adds the author elements in the "entry" elements of the DFRN protocol
747 * @param DOMDocument $doc XML document
748 * @param string $element Element name for the author
749 * @param string $contact_url Link of the contact
750 * @param array $item Item elements
752 * @return \DOMElement XML author object
753 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
754 * @todo Find proper type-hints
756 private static function addEntryAuthor(DOMDocument $doc, $element, $contact_url, $item)
758 $author = $doc->createElement($element);
760 $contact = Contact::getByURLForUser($contact_url, $item["uid"], false, ['url', 'name', 'addr', 'photo']);
761 if (!empty($contact)) {
762 XML::addElement($doc, $author, "name", $contact["name"]);
763 XML::addElement($doc, $author, "uri", $contact["url"]);
764 XML::addElement($doc, $author, "dfrn:handle", $contact["addr"]);
767 /// - Check real image type and image size
768 /// - Check which of these boths elements we should use
771 "type" => "image/jpeg",
773 "media:height" => 80,
774 "href" => $contact["photo"]];
775 XML::addElement($doc, $author, "link", "", $attributes);
779 "type" => "image/jpeg",
781 "media:height" => 80,
782 "href" => $contact["photo"]];
783 XML::addElement($doc, $author, "link", "", $attributes);
790 * Adds the activity elements
792 * @param DOMDocument $doc XML document
793 * @param string $element Element name for the activity
794 * @param string $activity activity value
796 * @return \DOMElement XML activity object
797 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
798 * @todo Find proper type-hints
800 private static function createActivity(DOMDocument $doc, $element, $activity)
803 $entry = $doc->createElement($element);
805 $r = XML::parseString($activity);
811 XML::addElement($doc, $entry, "activity:object-type", $r->type);
815 XML::addElement($doc, $entry, "id", $r->id);
819 XML::addElement($doc, $entry, "title", $r->title);
823 if (substr($r->link, 0, 1) == '<') {
824 if (strstr($r->link, '&') && (! strstr($r->link, '&'))) {
825 $r->link = str_replace('&', '&', $r->link);
828 $r->link = preg_replace('/\<link(.*?)\"\>/', '<link$1"/>', $r->link);
830 // XML does need a single element as root element so we add a dummy element here
831 $data = XML::parseString("<dummy>" . $r->link . "</dummy>");
832 if (is_object($data)) {
833 foreach ($data->link as $link) {
835 foreach ($link->attributes() as $parameter => $value) {
836 $attributes[$parameter] = $value;
838 XML::addElement($doc, $entry, "link", "", $attributes);
842 $attributes = ["rel" => "alternate", "type" => "text/html", "href" => $r->link];
843 XML::addElement($doc, $entry, "link", "", $attributes);
847 XML::addElement($doc, $entry, "content", BBCode::convert($r->content), ["type" => "html"]);
857 * Adds the elements for attachments
859 * @param object $doc XML document
860 * @param object $root XML root
861 * @param array $item Item element
863 * @return void XML attachment object
864 * @todo Find proper type-hints
866 private static function getAttachment($doc, $root, $item)
868 $arr = explode('[/attach],', $item['attach']);
870 foreach ($arr as $r) {
872 $cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|', $r, $matches);
874 $attributes = ["rel" => "enclosure",
875 "href" => $matches[1],
876 "type" => $matches[3]];
878 if (intval($matches[2])) {
879 $attributes["length"] = intval($matches[2]);
882 if (trim($matches[4]) != "") {
883 $attributes["title"] = trim($matches[4]);
886 XML::addElement($doc, $root, "link", "", $attributes);
893 * Adds the "entry" elements for the DFRN protocol
895 * @param DOMDocument $doc XML document
896 * @param string $type "text" or "html"
897 * @param array $item Item element
898 * @param array $owner Owner record
899 * @param bool $comment Trigger the sending of the "comment" element
900 * @param int $cid Contact ID of the recipient
901 * @param bool $single If set, the entry is created as an XML document with a single "entry" element
903 * @return null|\DOMElement XML entry object
904 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
905 * @throws \ImagickException
906 * @todo Find proper type-hints
908 private static function entry(DOMDocument $doc, $type, array $item, array $owner, $comment = false, $cid = 0, $single = false)
912 if (!$item['parent']) {
913 Logger::notice('Item without parent found.', ['type' => $type, 'item' => $item]);
917 if ($item['deleted']) {
918 $attributes = ["ref" => $item['uri'], "when" => DateTimeFormat::utc($item['edited'] . '+00:00', DateTimeFormat::ATOM)];
919 return XML::createElement($doc, "at:deleted-entry", "", $attributes);
923 $entry = $doc->createElement("entry");
925 $entry = $doc->createElementNS(ActivityNamespace::ATOM1, 'entry');
926 $doc->appendChild($entry);
928 $entry->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
929 $entry->setAttribute("xmlns:at", ActivityNamespace::TOMB);
930 $entry->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
931 $entry->setAttribute("xmlns:dfrn", ActivityNamespace::DFRN);
932 $entry->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
933 $entry->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
934 $entry->setAttribute("xmlns:poco", ActivityNamespace::POCO);
935 $entry->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
936 $entry->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
939 if ($item['private'] == Item::PRIVATE) {
940 $body = Item::fixPrivatePhotos($item['body'], $owner['uid'], $item, $cid);
942 $body = $item['body'];
945 // Remove the abstract element. It is only locally important.
946 $body = BBCode::stripAbstract($body);
949 if ($type == 'html') {
952 if ($item['title'] != "") {
953 $htmlbody = "[b]" . $item['title'] . "[/b]\n\n" . $htmlbody;
956 $htmlbody = BBCode::convert($htmlbody, false, BBCode::OSTATUS);
959 $author = self::addEntryAuthor($doc, "author", $item["author-link"], $item);
960 $entry->appendChild($author);
962 $dfrnowner = self::addEntryAuthor($doc, "dfrn:owner", $item["owner-link"], $item);
963 $entry->appendChild($dfrnowner);
965 if ($item['gravity'] != GRAVITY_PARENT) {
966 $parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
967 $parent = Item::selectFirst(['guid', 'plink'], ['uri' => $parent_item, 'uid' => $item['uid']]);
968 if (DBA::isResult($parent)) {
969 $attributes = ["ref" => $parent_item, "type" => "text/html",
970 "href" => $parent['plink'],
971 "dfrn:diaspora_guid" => $parent['guid']];
972 XML::addElement($doc, $entry, "thr:in-reply-to", "", $attributes);
976 // Add conversation data. This is used for OStatus
977 $conversation_href = DI::baseUrl()."/display/".$item["parent-guid"];
978 $conversation_uri = $conversation_href;
980 if (isset($parent_item)) {
981 $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $item['parent-uri']]);
982 if (DBA::isResult($conversation)) {
983 if ($conversation['conversation-uri'] != '') {
984 $conversation_uri = $conversation['conversation-uri'];
986 if ($conversation['conversation-href'] != '') {
987 $conversation_href = $conversation['conversation-href'];
993 "href" => $conversation_href,
994 "ref" => $conversation_uri];
996 XML::addElement($doc, $entry, "ostatus:conversation", $conversation_uri, $attributes);
998 XML::addElement($doc, $entry, "id", $item["uri"]);
999 XML::addElement($doc, $entry, "title", $item["title"]);
1001 XML::addElement($doc, $entry, "published", DateTimeFormat::utc($item["created"] . "+00:00", DateTimeFormat::ATOM));
1002 XML::addElement($doc, $entry, "updated", DateTimeFormat::utc($item["edited"] . "+00:00", DateTimeFormat::ATOM));
1004 // "dfrn:env" is used to read the content
1005 XML::addElement($doc, $entry, "dfrn:env", Strings::base64UrlEncode($body, true));
1007 // The "content" field is not read by the receiver. We could remove it when the type is "text"
1008 // We keep it at the moment, maybe there is some old version that doesn't read "dfrn:env"
1009 XML::addElement($doc, $entry, "content", (($type == 'html') ? $htmlbody : $body), ["type" => $type]);
1011 // We save this value in "plink". Maybe we should read it from there as well?
1017 ["rel" => "alternate", "type" => "text/html",
1018 "href" => DI::baseUrl() . "/display/" . $item["guid"]]
1021 // "comment-allow" is some old fashioned stuff for old Friendica versions.
1022 // It is included in the rewritten code for completeness
1024 XML::addElement($doc, $entry, "dfrn:comment-allow", 1);
1027 if ($item['location']) {
1028 XML::addElement($doc, $entry, "dfrn:location", $item['location']);
1031 if ($item['coord']) {
1032 XML::addElement($doc, $entry, "georss:point", $item['coord']);
1035 if ($item['private']) {
1036 // Friendica versions prior to 2020.3 can't handle "unlisted" properly. So we can only transmit public and private
1037 XML::addElement($doc, $entry, "dfrn:private", ($item['private'] == Item::PRIVATE ? Item::PRIVATE : Item::PUBLIC));
1038 XML::addElement($doc, $entry, "dfrn:unlisted", $item['private'] == Item::UNLISTED);
1041 if ($item['extid']) {
1042 XML::addElement($doc, $entry, "dfrn:extid", $item['extid']);
1045 if ($item['post-type'] == Item::PT_PAGE) {
1046 XML::addElement($doc, $entry, "dfrn:bookmark", "true");
1050 XML::addElement($doc, $entry, "statusnet:notice_info", "", ["local_id" => $item['id'], "source" => $item['app']]);
1053 XML::addElement($doc, $entry, "dfrn:diaspora_guid", $item["guid"]);
1055 // The signed text contains the content in Markdown, the sender handle and the signatur for the content
1056 // It is needed for relayed comments to Diaspora.
1057 if ($item['signed_text']) {
1058 $sign = base64_encode(json_encode(['signed_text' => $item['signed_text'],'signature' => '','signer' => '']));
1059 XML::addElement($doc, $entry, "dfrn:diaspora_signature", $sign);
1062 XML::addElement($doc, $entry, "activity:verb", self::constructVerb($item));
1064 if ($item['object-type'] != "") {
1065 XML::addElement($doc, $entry, "activity:object-type", $item['object-type']);
1066 } elseif ($item['gravity'] == GRAVITY_PARENT) {
1067 XML::addElement($doc, $entry, "activity:object-type", Activity\ObjectType::NOTE);
1069 XML::addElement($doc, $entry, "activity:object-type", Activity\ObjectType::COMMENT);
1072 $actobj = self::createActivity($doc, "activity:object", $item['object']);
1074 $entry->appendChild($actobj);
1077 $actarg = self::createActivity($doc, "activity:target", $item['target']);
1079 $entry->appendChild($actarg);
1082 $tags = Tag::getByURIId($item['uri-id']);
1085 foreach ($tags as $tag) {
1086 if (($type != 'html') || ($tag['type'] == Tag::HASHTAG)) {
1087 XML::addElement($doc, $entry, "category", "", ["scheme" => "X-DFRN:" . Tag::TAG_CHARACTER[$tag['type']] . ":" . $tag['url'], "term" => $tag['name']]);
1089 if ($tag['type'] != Tag::HASHTAG) {
1090 $mentioned[$tag['url']] = $tag['url'];
1095 foreach ($mentioned as $mention) {
1096 $condition = ['uid' => $owner["uid"], 'nurl' => Strings::normaliseLink($mention)];
1097 $contact = DBA::selectFirst('contact', ['forum', 'prv'], $condition);
1099 if (DBA::isResult($contact) && ($contact["forum"] || $contact["prv"])) {
1105 ["rel" => "mentioned",
1106 "ostatus:object-type" => Activity\ObjectType::GROUP,
1115 ["rel" => "mentioned",
1116 "ostatus:object-type" => Activity\ObjectType::PERSON,
1122 self::getAttachment($doc, $entry, $item);
1128 * encrypts data via AES
1130 * @param string $data The data that is to be encrypted
1131 * @param string $key The AES key
1133 * @return string encrypted data
1135 private static function aesEncrypt($data, $key)
1137 return openssl_encrypt($data, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
1141 * decrypts data via AES
1143 * @param string $encrypted The encrypted data
1144 * @param string $key The AES key
1146 * @return string decrypted data
1148 public static function aesDecrypt($encrypted, $key)
1150 return openssl_decrypt($encrypted, 'aes-128-ecb', $key, OPENSSL_RAW_DATA);
1154 * Delivers the atom content to the contacts
1156 * @param array $owner Owner record
1157 * @param array $contact Contact record of the receiver
1158 * @param string $atom Content that will be transmitted
1159 * @param bool $dissolve (to be documented)
1161 * @return int Deliver status. Negative values mean an error.
1162 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1163 * @throws \ImagickException
1164 * @todo Add array type-hint for $owner, $contact
1166 public static function deliver($owner, $contact, $atom, $dissolve = false)
1168 $idtosend = $orig_id = (($contact['dfrn-id']) ? $contact['dfrn-id'] : $contact['issued-id']);
1170 if ($contact['duplex'] && $contact['dfrn-id']) {
1171 $idtosend = '0:' . $orig_id;
1173 if ($contact['duplex'] && $contact['issued-id']) {
1174 $idtosend = '1:' . $orig_id;
1177 $rino = DI::config()->get('system', 'rino_encrypt');
1178 $rino = intval($rino);
1180 Logger::log("Local rino version: ". $rino, Logger::DEBUG);
1182 $ssl_val = intval(DI::config()->get('system', 'ssl_policy'));
1185 case BaseURL::SSL_POLICY_FULL:
1186 $ssl_policy = 'full';
1188 case BaseURL::SSL_POLICY_SELFSIGN:
1189 $ssl_policy = 'self';
1191 case BaseURL::SSL_POLICY_NONE:
1193 $ssl_policy = 'none';
1197 $url = $contact['notify'] . '&dfrn_id=' . $idtosend . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . (($rino) ? '&rino='.$rino : '');
1199 Logger::log('dfrn_deliver: ' . $url);
1201 $curlResult = DI::httpRequest()->get($url);
1203 if ($curlResult->isTimeout()) {
1204 return -2; // timed out
1207 $xml = $curlResult->getBody();
1209 $curl_stat = $curlResult->getReturnCode();
1210 if (empty($curl_stat)) {
1211 return -3; // timed out
1214 Logger::log('dfrn_deliver: ' . $xml, Logger::DATA);
1220 if (strpos($xml, '<?xml') === false) {
1221 Logger::log('dfrn_deliver: no valid XML returned');
1222 Logger::log('dfrn_deliver: returned XML: ' . $xml, Logger::DATA);
1226 $res = XML::parseString($xml);
1228 if (!is_object($res) || (intval($res->status) != 0) || !strlen($res->challenge) || !strlen($res->dfrn_id)) {
1229 if (empty($res->status)) {
1232 $status = $res->status;
1239 $sent_dfrn_id = hex2bin((string) $res->dfrn_id);
1240 $challenge = hex2bin((string) $res->challenge);
1241 $perm = (($res->perm) ? $res->perm : null);
1242 $dfrn_version = floatval($res->dfrn_version ?: 2.0);
1243 $rino_remote_version = intval($res->rino);
1244 $page = (($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY) ? 1 : 0);
1246 Logger::log("Remote rino version: ".$rino_remote_version." for ".$contact["url"], Logger::DEBUG);
1248 if ($owner['page-flags'] == User::PAGE_FLAGS_PRVGROUP) {
1252 $final_dfrn_id = '';
1255 if ((($perm == 'rw') && !intval($contact['writable']))
1256 || (($perm == 'r') && intval($contact['writable']))
1258 DBA::update('contact', ['writable' => ($perm == 'rw')], ['id' => $contact['id']]);
1260 $contact['writable'] = (string) 1 - intval($contact['writable']);
1264 if (($contact['duplex'] && strlen($contact['pubkey']))
1265 || ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY && strlen($contact['pubkey']))
1266 || ($contact['rel'] == Contact::SHARING && strlen($contact['pubkey']))
1268 openssl_public_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['pubkey']);
1269 openssl_public_decrypt($challenge, $postvars['challenge'], $contact['pubkey']);
1271 openssl_private_decrypt($sent_dfrn_id, $final_dfrn_id, $contact['prvkey']);
1272 openssl_private_decrypt($challenge, $postvars['challenge'], $contact['prvkey']);
1275 $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
1277 if (strpos($final_dfrn_id, ':') == 1) {
1278 $final_dfrn_id = substr($final_dfrn_id, 2);
1281 if ($final_dfrn_id != $orig_id) {
1282 Logger::log('dfrn_deliver: wrong dfrn_id.');
1283 // did not decode properly - cannot trust this site
1287 $postvars['dfrn_id'] = $idtosend;
1288 $postvars['dfrn_version'] = DFRN_PROTOCOL_VERSION;
1290 $postvars['dissolve'] = '1';
1293 if ((($contact['rel']) && ($contact['rel'] != Contact::SHARING) && (! $contact['blocked'])) || ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY)) {
1294 $postvars['data'] = $atom;
1295 $postvars['perm'] = 'rw';
1297 $postvars['data'] = str_replace('<dfrn:comment-allow>1', '<dfrn:comment-allow>0', $atom);
1298 $postvars['perm'] = 'r';
1301 $postvars['ssl_policy'] = $ssl_policy;
1304 $postvars['page'] = $page;
1308 if ($rino > 0 && $rino_remote_version > 0 && (! $dissolve)) {
1309 Logger::log('rino version: '. $rino_remote_version);
1311 switch ($rino_remote_version) {
1313 $key = openssl_random_pseudo_bytes(16);
1314 $data = self::aesEncrypt($postvars['data'], $key);
1318 Logger::log("rino: invalid requested version '$rino_remote_version'");
1322 $postvars['rino'] = $rino_remote_version;
1323 $postvars['data'] = bin2hex($data);
1325 if ($dfrn_version >= 2.1) {
1326 if (($contact['duplex'] && strlen($contact['pubkey']))
1327 || ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY && strlen($contact['pubkey']))
1328 || ($contact['rel'] == Contact::SHARING && strlen($contact['pubkey']))
1330 openssl_public_encrypt($key, $postvars['key'], $contact['pubkey']);
1332 openssl_private_encrypt($key, $postvars['key'], $contact['prvkey']);
1335 if (($contact['duplex'] && strlen($contact['prvkey'])) || ($owner['page-flags'] == User::PAGE_FLAGS_COMMUNITY)) {
1336 openssl_private_encrypt($key, $postvars['key'], $contact['prvkey']);
1338 openssl_public_encrypt($key, $postvars['key'], $contact['pubkey']);
1342 Logger::log('md5 rawkey ' . md5($postvars['key']));
1344 $postvars['key'] = bin2hex($postvars['key']);
1348 Logger::debug('dfrn_deliver', ['post' => $postvars]);
1350 $postResult = DI::httpRequest()->post($contact['notify'], $postvars);
1352 $xml = $postResult->getBody();
1354 Logger::log('dfrn_deliver: ' . "RECEIVED: " . $xml, Logger::DATA);
1356 $curl_stat = $postResult->getReturnCode();
1357 if (empty($curl_stat) || empty($xml)) {
1358 return -9; // timed out
1361 if (($curl_stat == 503) && $postResult->inHeader('retry-after')) {
1365 if (strpos($xml, '<?xml') === false) {
1366 Logger::log('dfrn_deliver: phase 2: no valid XML returned');
1367 Logger::log('dfrn_deliver: phase 2: returned XML: ' . $xml, Logger::DATA);
1371 $res = XML::parseString($xml);
1373 if (!isset($res->status)) {
1377 // Possibly old servers had returned an empty value when everything was okay
1378 if (empty($res->status)) {
1382 if (!empty($res->message)) {
1383 Logger::log('Delivery returned status '.$res->status.' - '.$res->message, Logger::DEBUG);
1386 return intval($res->status);
1390 * Transmits atom content to the contacts via the Diaspora transport layer
1392 * @param array $owner Owner record
1393 * @param array $contact Contact record of the receiver
1394 * @param string $atom Content that will be transmitted
1396 * @param bool $public_batch
1397 * @return int Deliver status. Negative values mean an error.
1398 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1399 * @throws \ImagickException
1401 public static function transmit($owner, $contact, $atom, $public_batch = false)
1403 if (!$public_batch) {
1404 if (empty($contact['addr'])) {
1405 Logger::log('Empty contact handle for ' . $contact['id'] . ' - ' . $contact['url'] . ' - trying to update it.');
1406 if (Contact::updateFromProbe($contact['id'])) {
1407 $new_contact = DBA::selectFirst('contact', ['addr'], ['id' => $contact['id']]);
1408 $contact['addr'] = $new_contact['addr'];
1411 if (empty($contact['addr'])) {
1412 Logger::log('Unable to find contact handle for ' . $contact['id'] . ' - ' . $contact['url']);
1417 $fcontact = FContact::getByURL($contact['addr']);
1418 if (empty($fcontact)) {
1419 Logger::log('Unable to find contact details for ' . $contact['id'] . ' - ' . $contact['addr']);
1422 $pubkey = $fcontact['pubkey'];
1427 $envelope = Diaspora::buildMessage($atom, $owner, $contact, $owner['uprvkey'], $pubkey, $public_batch);
1429 // Create the endpoint for public posts. This is some WIP and should later be added to the probing
1430 if ($public_batch && empty($contact["batch"])) {
1431 $parts = parse_url($contact["notify"]);
1432 $path_parts = explode('/', $parts['path']);
1433 array_pop($path_parts);
1434 $parts['path'] = implode('/', $path_parts);
1435 $contact["batch"] = Network::unparseURL($parts);
1438 $dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
1440 if (empty($dest_url)) {
1441 Logger::info('Empty destination', ['public' => $public_batch, 'contact' => $contact]);
1445 $content_type = ($public_batch ? "application/magic-envelope+xml" : "application/json");
1447 $postResult = DI::httpRequest()->post($dest_url, $envelope, ["Content-Type: " . $content_type]);
1448 $xml = $postResult->getBody();
1450 $curl_stat = $postResult->getReturnCode();
1451 if (empty($curl_stat) || empty($xml)) {
1452 Logger::log('Empty answer from ' . $contact['id'] . ' - ' . $dest_url);
1453 return -9; // timed out
1456 if (($curl_stat == 503) && $postResult->inHeader('retry-after')) {
1460 if (strpos($xml, '<?xml') === false) {
1461 Logger::log('No valid XML returned from ' . $contact['id'] . ' - ' . $dest_url);
1462 Logger::log('Returned XML: ' . $xml, Logger::DATA);
1466 $res = XML::parseString($xml);
1468 if (empty($res->status)) {
1472 if (!empty($res->message)) {
1473 Logger::log('Transmit to ' . $dest_url . ' returned status '.$res->status.' - '.$res->message, Logger::DEBUG);
1476 return intval($res->status);
1480 * Fetch the author data from head or entry items
1482 * @param object $xpath XPath object
1483 * @param object $context In which context should the data be searched
1484 * @param array $importer Record of the importer user mixed with contact of the content
1485 * @param string $element Element name from which the data is fetched
1486 * @param bool $onlyfetch Should the data only be fetched or should it update the contact record as well
1487 * @param string $xml optional, default empty
1489 * @return array Relevant data of the author
1490 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1491 * @throws \ImagickException
1492 * @todo Find good type-hints for all parameter
1494 private static function fetchauthor($xpath, $context, $importer, $element, $onlyfetch, $xml = "")
1497 $author["name"] = XML::getFirstNodeValue($xpath, $element."/atom:name/text()", $context);
1498 $author["link"] = XML::getFirstNodeValue($xpath, $element."/atom:uri/text()", $context);
1500 $fields = ['id', 'uid', 'url', 'network', 'avatar-date', 'avatar', 'name-date', 'uri-date', 'addr',
1501 'name', 'nick', 'about', 'location', 'keywords', 'xmpp', 'bdyear', 'bd', 'hidden', 'contact-type'];
1502 $condition = ["`uid` = ? AND `nurl` = ? AND `network` != ? AND NOT `pending` AND NOT `blocked` AND `rel` IN (?, ?)",
1503 $importer["importer_uid"], Strings::normaliseLink($author["link"]), Protocol::STATUSNET,
1504 Contact::SHARING, Contact::FRIEND];
1505 $contact_old = DBA::selectFirst('contact', $fields, $condition);
1507 if (DBA::isResult($contact_old)) {
1508 $author["contact-id"] = $contact_old["id"];
1509 $author["network"] = $contact_old["network"];
1512 Logger::debug("Contact ".$author["link"]." wasn't found for user ".$importer["importer_uid"]." XML: ".$xml);
1515 $author["contact-unknown"] = true;
1516 $contact = Contact::getByURL($author["link"], null, ["id", "network"]);
1517 $author["contact-id"] = $contact["id"] ?? $importer["id"];
1518 $author["network"] = $contact["network"] ?? $importer["network"];
1522 // Until now we aren't serving different sizes - but maybe later
1524 /// @todo check if "avatar" or "photo" would be the best field in the specification
1525 $avatars = $xpath->query($element . "/atom:link[@rel='avatar']", $context);
1526 foreach ($avatars as $avatar) {
1529 foreach ($avatar->attributes as $attributes) {
1530 /// @TODO Rewrite these similar if() to one switch
1531 if ($attributes->name == "href") {
1532 $href = $attributes->textContent;
1534 if ($attributes->name == "width") {
1535 $width = $attributes->textContent;
1537 if ($attributes->name == "updated") {
1538 $author["avatar-date"] = $attributes->textContent;
1541 if (($width > 0) && ($href != "")) {
1542 $avatarlist[$width] = $href;
1546 if (count($avatarlist) > 0) {
1547 krsort($avatarlist);
1548 $author["avatar"] = current($avatarlist);
1551 if (empty($author['avatar']) && !empty($author['link'])) {
1552 $cid = Contact::getIdForURL($author['link'], 0);
1554 $contact = DBA::selectFirst('contact', ['avatar'], ['id' => $cid]);
1555 if (DBA::isResult($contact)) {
1556 $author['avatar'] = $contact['avatar'];
1561 if (empty($author['avatar'])) {
1562 Logger::log('Empty author: ' . $xml);
1563 $author['avatar'] = '';
1566 if (DBA::isResult($contact_old) && !$onlyfetch) {
1567 Logger::log("Check if contact details for contact " . $contact_old["id"] . " (" . $contact_old["nick"] . ") have to be updated.", Logger::DEBUG);
1569 $poco = ["url" => $contact_old["url"], "network" => $contact_old["network"]];
1571 // When was the last change to name or uri?
1572 $name_element = $xpath->query($element . "/atom:name", $context)->item(0);
1573 foreach ($name_element->attributes as $attributes) {
1574 if ($attributes->name == "updated") {
1575 $poco["name-date"] = $attributes->textContent;
1579 $link_element = $xpath->query($element . "/atom:link", $context)->item(0);
1580 foreach ($link_element->attributes as $attributes) {
1581 if ($attributes->name == "updated") {
1582 $poco["uri-date"] = $attributes->textContent;
1586 // Update contact data
1587 $value = XML::getFirstNodeValue($xpath, $element . "/dfrn:handle/text()", $context);
1589 $poco["addr"] = $value;
1592 $value = XML::getFirstNodeValue($xpath, $element . "/poco:displayName/text()", $context);
1594 $poco["name"] = $value;
1597 $value = XML::getFirstNodeValue($xpath, $element . "/poco:preferredUsername/text()", $context);
1599 $poco["nick"] = $value;
1602 $value = XML::getFirstNodeValue($xpath, $element . "/poco:note/text()", $context);
1604 $poco["about"] = $value;
1607 $value = XML::getFirstNodeValue($xpath, $element . "/poco:address/poco:formatted/text()", $context);
1609 $poco["location"] = $value;
1612 /// @todo Only search for elements with "poco:type" = "xmpp"
1613 $value = XML::getFirstNodeValue($xpath, $element . "/poco:ims/poco:value/text()", $context);
1615 $poco["xmpp"] = $value;
1618 /// @todo Add support for the following fields that we don't support by now in the contact table:
1619 /// - poco:utcOffset
1625 // If the "hide" element is present then the profile isn't searchable.
1626 $hide = intval(XML::getFirstNodeValue($xpath, $element . "/dfrn:hide/text()", $context) == "true");
1628 Logger::log("Hidden status for contact " . $contact_old["url"] . ": " . $hide, Logger::DEBUG);
1630 // If the contact isn't searchable then set the contact to "hidden".
1631 // Problem: This can be manually overridden by the user.
1633 $contact_old["hidden"] = true;
1636 // Save the keywords into the contact table
1638 $tagelements = $xpath->evaluate($element . "/poco:tags/text()", $context);
1639 foreach ($tagelements as $tag) {
1640 $tags[$tag->nodeValue] = $tag->nodeValue;
1644 $poco["keywords"] = implode(", ", $tags);
1647 // "dfrn:birthday" contains the birthday converted to UTC
1648 $birthday = XML::getFirstNodeValue($xpath, $element . "/poco:birthday/text()", $context);
1650 if (strtotime($birthday) > time()) {
1651 $bd_timestamp = strtotime($birthday);
1653 $poco["bdyear"] = date("Y", $bd_timestamp);
1656 // "poco:birthday" is the birthday in the format "yyyy-mm-dd"
1657 $value = XML::getFirstNodeValue($xpath, $element . "/poco:birthday/text()", $context);
1659 if (!in_array($value, ["", "0000-00-00", DBA::NULL_DATE])) {
1660 $bdyear = date("Y");
1661 $value = str_replace(["0000", "0001"], $bdyear, $value);
1663 if (strtotime($value) < time()) {
1664 $value = str_replace($bdyear, $bdyear + 1, $value);
1667 $poco["bd"] = $value;
1670 $contact = array_merge($contact_old, $poco);
1672 if ($contact_old["bdyear"] != $contact["bdyear"]) {
1673 Event::createBirthday($contact, $birthday);
1676 $fields = ['name' => $contact['name'], 'nick' => $contact['nick'], 'about' => $contact['about'],
1677 'location' => $contact['location'], 'addr' => $contact['addr'], 'keywords' => $contact['keywords'],
1678 'bdyear' => $contact['bdyear'], 'bd' => $contact['bd'], 'hidden' => $contact['hidden'],
1679 'xmpp' => $contact['xmpp'], 'name-date' => DateTimeFormat::utc($contact['name-date']),
1680 'unsearchable' => $contact['hidden'], 'uri-date' => DateTimeFormat::utc($contact['uri-date'])];
1682 DBA::update('contact', $fields, ['id' => $contact['id'], 'network' => $contact['network']], $contact_old);
1684 // Update the public contact. Don't set the "hidden" value, this is used differently for public contacts
1685 unset($fields['hidden']);
1686 $condition = ['uid' => 0, 'nurl' => Strings::normaliseLink($contact_old['url'])];
1687 DBA::update('contact', $fields, $condition, true);
1689 Contact::updateAvatar($contact['id'], $author['avatar']);
1691 $pcid = Contact::getIdForURL($contact_old['url']);
1692 if (!empty($pcid)) {
1693 Contact::updateAvatar($pcid, $author['avatar']);
1701 * Transforms activity objects into an XML string
1703 * @param object $xpath XPath object
1704 * @param object $activity Activity object
1705 * @param string $element element name
1707 * @return string XML string
1708 * @todo Find good type-hints for all parameter
1710 private static function transformActivity($xpath, $activity, $element)
1712 if (!is_object($activity)) {
1716 $obj_doc = new DOMDocument("1.0", "utf-8");
1717 $obj_doc->formatOutput = true;
1719 $obj_element = $obj_doc->createElementNS( ActivityNamespace::ATOM1, $element);
1721 $activity_type = $xpath->query("activity:object-type/text()", $activity)->item(0)->nodeValue;
1722 XML::addElement($obj_doc, $obj_element, "type", $activity_type);
1724 $id = $xpath->query("atom:id", $activity)->item(0);
1725 if (is_object($id)) {
1726 $obj_element->appendChild($obj_doc->importNode($id, true));
1729 $title = $xpath->query("atom:title", $activity)->item(0);
1730 if (is_object($title)) {
1731 $obj_element->appendChild($obj_doc->importNode($title, true));
1734 $links = $xpath->query("atom:link", $activity);
1735 if (is_object($links)) {
1736 foreach ($links as $link) {
1737 $obj_element->appendChild($obj_doc->importNode($link, true));
1741 $content = $xpath->query("atom:content", $activity)->item(0);
1742 if (is_object($content)) {
1743 $obj_element->appendChild($obj_doc->importNode($content, true));
1746 $obj_doc->appendChild($obj_element);
1748 $objxml = $obj_doc->saveXML($obj_element);
1750 /// @todo This isn't totally clean. We should find a way to transform the namespaces
1751 $objxml = str_replace("<".$element.' xmlns="http://www.w3.org/2005/Atom">', "<".$element.">", $objxml);
1756 * Processes the mail elements
1758 * @param object $xpath XPath object
1759 * @param object $mail mail elements
1760 * @param array $importer Record of the importer user mixed with contact of the content
1762 * @throws \Exception
1763 * @todo Find good type-hints for all parameter
1765 private static function processMail($xpath, $mail, $importer)
1767 Logger::log("Processing mails");
1770 $msg["uid"] = $importer["importer_uid"];
1771 $msg["from-name"] = XML::getFirstValue($xpath, "dfrn:sender/dfrn:name/text()", $mail);
1772 $msg["from-url"] = XML::getFirstValue($xpath, "dfrn:sender/dfrn:uri/text()", $mail);
1773 $msg["from-photo"] = XML::getFirstValue($xpath, "dfrn:sender/dfrn:avatar/text()", $mail);
1774 $msg["contact-id"] = $importer["id"];
1775 $msg["uri"] = XML::getFirstValue($xpath, "dfrn:id/text()", $mail);
1776 $msg["parent-uri"] = XML::getFirstValue($xpath, "dfrn:in-reply-to/text()", $mail);
1777 $msg["created"] = DateTimeFormat::utc(XML::getFirstValue($xpath, "dfrn:sentdate/text()", $mail));
1778 $msg["title"] = XML::getFirstValue($xpath, "dfrn:subject/text()", $mail);
1779 $msg["body"] = XML::getFirstValue($xpath, "dfrn:content/text()", $mail);
1785 * Processes the suggestion elements
1787 * @param object $xpath XPath object
1788 * @param object $suggestion suggestion elements
1789 * @param array $importer Record of the importer user mixed with contact of the content
1791 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1792 * @todo Find good type-hints for all parameter
1794 private static function processSuggestion($xpath, $suggestion, $importer)
1796 Logger::notice('Processing suggestions');
1798 $url = $xpath->evaluate('string(dfrn:url[1]/text())', $suggestion);
1799 $cid = Contact::getIdForURL($url);
1800 $note = $xpath->evaluate('string(dfrn:note[1]/text())', $suggestion);
1802 return FContact::addSuggestion($importer['importer_uid'], $cid, $importer['id'], $note);
1806 * Processes the relocation elements
1808 * @param object $xpath XPath object
1809 * @param object $relocation relocation elements
1810 * @param array $importer Record of the importer user mixed with contact of the content
1812 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1813 * @throws \ImagickException
1814 * @todo Find good type-hints for all parameter
1816 private static function processRelocation($xpath, $relocation, $importer)
1818 Logger::log("Processing relocations");
1820 /// @TODO Rewrite this to one statement
1822 $relocate["uid"] = $importer["importer_uid"];
1823 $relocate["cid"] = $importer["id"];
1824 $relocate["url"] = $xpath->query("dfrn:url/text()", $relocation)->item(0)->nodeValue;
1825 $relocate["addr"] = $xpath->query("dfrn:addr/text()", $relocation)->item(0)->nodeValue;
1826 $relocate["name"] = $xpath->query("dfrn:name/text()", $relocation)->item(0)->nodeValue;
1827 $relocate["avatar"] = $xpath->query("dfrn:avatar/text()", $relocation)->item(0)->nodeValue;
1828 $relocate["photo"] = $xpath->query("dfrn:photo/text()", $relocation)->item(0)->nodeValue;
1829 $relocate["thumb"] = $xpath->query("dfrn:thumb/text()", $relocation)->item(0)->nodeValue;
1830 $relocate["micro"] = $xpath->query("dfrn:micro/text()", $relocation)->item(0)->nodeValue;
1831 $relocate["request"] = $xpath->query("dfrn:request/text()", $relocation)->item(0)->nodeValue;
1832 $relocate["confirm"] = $xpath->query("dfrn:confirm/text()", $relocation)->item(0)->nodeValue;
1833 $relocate["notify"] = $xpath->query("dfrn:notify/text()", $relocation)->item(0)->nodeValue;
1834 $relocate["poll"] = $xpath->query("dfrn:poll/text()", $relocation)->item(0)->nodeValue;
1835 $relocate["sitepubkey"] = $xpath->query("dfrn:sitepubkey/text()", $relocation)->item(0)->nodeValue;
1837 if (($relocate["avatar"] == "") && ($relocate["photo"] != "")) {
1838 $relocate["avatar"] = $relocate["photo"];
1841 if ($relocate["addr"] == "") {
1842 $relocate["addr"] = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$3@$2", $relocate["url"]);
1847 "SELECT `photo`, `url` FROM `contact` WHERE `id` = %d AND `uid` = %d",
1848 intval($importer["id"]),
1849 intval($importer["importer_uid"])
1852 if (!DBA::isResult($r)) {
1853 Logger::log("Query failed to execute, no result returned in " . __FUNCTION__);
1859 // Update the contact table. We try to find every entry.
1860 $fields = ['name' => $relocate["name"], 'avatar' => $relocate["avatar"],
1861 'url' => $relocate["url"], 'nurl' => Strings::normaliseLink($relocate["url"]),
1862 'addr' => $relocate["addr"], 'request' => $relocate["request"],
1863 'confirm' => $relocate["confirm"], 'notify' => $relocate["notify"],
1864 'poll' => $relocate["poll"], 'site-pubkey' => $relocate["sitepubkey"]];
1865 $condition = ["(`id` = ?) OR (`nurl` = ?)", $importer["id"], Strings::normaliseLink($old["url"])];
1867 DBA::update('contact', $fields, $condition);
1869 Contact::updateAvatar($importer["id"], $relocate["avatar"], true);
1871 Logger::log('Contacts are updated.');
1874 /// merge with current record, current contents have priority
1875 /// update record, set url-updated
1876 /// update profile photos
1877 /// schedule a scan?
1884 * @param array $current the current item record
1885 * @param array $item the new item record
1886 * @param array $importer Record of the importer user mixed with contact of the content
1887 * @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
1889 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1890 * @todo set proper type-hints (array?)
1892 private static function updateContent($current, $item, $importer, $entrytype)
1896 if (self::isEditedTimestampNewer($current, $item)) {
1897 // do not accept (ignore) an earlier edit than one we currently have.
1898 if (DateTimeFormat::utc($item["edited"]) < $current["edited"]) {
1902 $fields = ['title' => $item['title'] ?? '', 'body' => $item['body'] ?? '',
1903 'changed' => DateTimeFormat::utcNow(),
1904 'edited' => DateTimeFormat::utc($item["edited"])];
1906 $condition = ["`uri` = ? AND `uid` IN (0, ?)", $item["uri"], $importer["importer_uid"]];
1907 Item::update($fields, $condition);
1915 * Detects the entry type of the item
1917 * @param array $importer Record of the importer user mixed with contact of the content
1918 * @param array $item the new item record
1920 * @return int Is it a toplevel entry, a comment or a relayed comment?
1921 * @throws \Exception
1922 * @todo set proper type-hints (array?)
1924 private static function getEntryType($importer, $item)
1926 if ($item["parent-uri"] != $item["uri"]) {
1929 if ($importer["page-flags"] == User::PAGE_FLAGS_COMMUNITY || $importer["page-flags"] == User::PAGE_FLAGS_PRVGROUP) {
1932 Logger::log("possible community action");
1934 $sql_extra = " AND `contact`.`self` AND `item`.`wall` ";
1937 // was the top-level post for this action written by somebody on this site?
1938 // Specifically, the recipient?
1940 $is_a_remote_action = false;
1942 $parent = Item::selectFirst(['parent-uri'], ['uri' => $item["parent-uri"]]);
1943 if (DBA::isResult($parent)) {
1945 "SELECT `item`.`forum_mode`, `item`.`wall` FROM `item`
1946 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
1947 WHERE `item`.`uri` = '%s' AND (`item`.`parent-uri` = '%s' OR `item`.`thr-parent` = '%s')
1948 AND `item`.`uid` = %d
1951 DBA::escape($parent["parent-uri"]),
1952 DBA::escape($parent["parent-uri"]),
1953 DBA::escape($parent["parent-uri"]),
1954 intval($importer["importer_uid"])
1956 if (DBA::isResult($r)) {
1957 $is_a_remote_action = true;
1962 * Does this have the characteristics of a community or private group action?
1963 * If it's an action to a wall post on a community/prvgroup page it's a
1964 * valid community action. Also forum_mode makes it valid for sure.
1965 * If neither, it's not.
1967 if ($is_a_remote_action && $community && (!$r[0]["forum_mode"]) && (!$r[0]["wall"])) {
1968 $is_a_remote_action = false;
1969 Logger::log("not a community action");
1972 if ($is_a_remote_action) {
1973 return DFRN::REPLY_RC;
1978 return DFRN::TOP_LEVEL;
1985 * @param array $item The new item record
1986 * @param array $importer Record of the importer user mixed with contact of the content
1988 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1989 * @todo set proper type-hints (array?)
1991 private static function doPoke(array $item, array $importer)
1993 $verb = urldecode(substr($item["verb"], strpos($item["verb"], "#")+1));
1997 $xo = XML::parseString($item["object"]);
1999 if (($xo->type == Activity\ObjectType::PERSON) && ($xo->id)) {
2000 // somebody was poked/prodded. Was it me?
2002 foreach ($xo->link as $l) {
2003 $atts = $l->attributes();
2004 switch ($atts["rel"]) {
2006 $Blink = $atts["href"];
2013 if ($Blink && Strings::compareLink($Blink, DI::baseUrl() . "/profile/" . $importer["nickname"])) {
2014 $author = DBA::selectFirst('contact', ['name', 'thumb', 'url'], ['id' => $item['author-id']]);
2016 $parent = Item::selectFirst(['id'], ['uri' => $item['parent-uri'], 'uid' => $importer["importer_uid"]]);
2017 $item['parent'] = $parent['id'];
2019 // send a notification
2022 "type" => Type::POKE,
2023 "notify_flags" => $importer["notify-flags"],
2024 "language" => $importer["language"],
2025 "to_name" => $importer["username"],
2026 "to_email" => $importer["email"],
2027 "uid" => $importer["importer_uid"],
2029 "link" => DI::baseUrl()."/display/".urlencode($item['guid']),
2030 "source_name" => $author["name"],
2031 "source_link" => $author["url"],
2032 "source_photo" => $author["thumb"],
2033 "verb" => $item["verb"],
2034 "otype" => "person",
2035 "activity" => $verb,
2036 "parent" => $item['parent']]
2043 * Processes several actions, depending on the verb
2045 * @param int $entrytype Is it a toplevel entry, a comment or a relayed comment?
2046 * @param array $importer Record of the importer user mixed with contact of the content
2047 * @param array $item the new item record
2048 * @param bool $is_like Is the verb a "like"?
2050 * @return bool Should the processing of the entries be continued?
2051 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2052 * @todo set proper type-hints (array?)
2054 private static function processVerbs($entrytype, $importer, &$item, &$is_like)
2056 Logger::log("Process verb ".$item["verb"]." and object-type ".$item["object-type"]." for entrytype ".$entrytype, Logger::DEBUG);
2058 if (($entrytype == DFRN::TOP_LEVEL) && !empty($importer['id'])) {
2059 // The filling of the the "contact" variable is done for legcy reasons
2060 // The functions below are partly used by ostatus.php as well - where we have this variable
2061 $contact = Contact::selectFirst([], ['id' => $importer['id']]);
2063 $activity = DI::activity();
2065 // Big question: Do we need these functions? They were part of the "consume_feed" function.
2066 // This function once was responsible for DFRN and OStatus.
2067 if ($activity->match($item["verb"], Activity::FOLLOW)) {
2068 Logger::log("New follower");
2069 Contact::addRelationship($importer, $contact, $item);
2072 if ($activity->match($item["verb"], Activity::UNFOLLOW)) {
2073 Logger::log("Lost follower");
2074 Contact::removeFollower($importer, $contact, $item);
2077 if ($activity->match($item["verb"], Activity::REQ_FRIEND)) {
2078 Logger::log("New friend request");
2079 Contact::addRelationship($importer, $contact, $item, true);
2082 if ($activity->match($item["verb"], Activity::UNFRIEND)) {
2083 Logger::log("Lost sharer");
2084 Contact::removeSharer($importer, $contact, $item);
2088 if (($item["verb"] == Activity::LIKE)
2089 || ($item["verb"] == Activity::DISLIKE)
2090 || ($item["verb"] == Activity::ATTEND)
2091 || ($item["verb"] == Activity::ATTENDNO)
2092 || ($item["verb"] == Activity::ATTENDMAYBE)
2093 || ($item["verb"] == Activity::ANNOUNCE)
2096 $item["gravity"] = GRAVITY_ACTIVITY;
2097 // only one like or dislike per person
2098 // splitted into two queries for performance issues
2099 $condition = ['uid' => $item["uid"], 'author-id' => $item["author-id"], 'gravity' => GRAVITY_ACTIVITY,
2100 'verb' => $item["verb"], 'parent-uri' => $item["parent-uri"]];
2101 if (Item::exists($condition)) {
2105 $condition = ['uid' => $item["uid"], 'author-id' => $item["author-id"], 'gravity' => GRAVITY_ACTIVITY,
2106 'verb' => $item["verb"], 'thr-parent' => $item["parent-uri"]];
2107 if (Item::exists($condition)) {
2111 // The owner of an activity must be the author
2112 $item["owner-name"] = $item["author-name"];
2113 $item["owner-link"] = $item["author-link"];
2114 $item["owner-avatar"] = $item["author-avatar"];
2115 $item["owner-id"] = $item["author-id"];
2120 if (($item["verb"] == Activity::TAG) && ($item["object-type"] == Activity\ObjectType::TAGTERM)) {
2121 $xo = XML::parseString($item["object"]);
2122 $xt = XML::parseString($item["target"]);
2124 if ($xt->type == Activity\ObjectType::NOTE) {
2125 $item_tag = Item::selectFirst(['id', 'uri-id', 'tag'], ['uri' => $xt->id, 'uid' => $importer["importer_uid"]]);
2127 if (!DBA::isResult($item_tag)) {
2128 Logger::log("Query failed to execute, no result returned in " . __FUNCTION__);
2132 // extract tag, if not duplicate, add to parent item
2134 Tag::store($item_tag['uri-id'], Tag::HASHTAG, $xo->content);
2143 * Processes the link elements
2145 * @param object $links link elements
2146 * @param array $item the item record
2148 * @todo set proper type-hints
2150 private static function parseLinks($links, &$item)
2157 foreach ($links as $link) {
2158 foreach ($link->attributes as $attributes) {
2159 switch ($attributes->name) {
2160 case "href" : $href = $attributes->textContent; break;
2161 case "rel" : $rel = $attributes->textContent; break;
2162 case "type" : $type = $attributes->textContent; break;
2163 case "length": $length = $attributes->textContent; break;
2164 case "title" : $title = $attributes->textContent; break;
2167 if (($rel != "") && ($href != "")) {
2170 $item["plink"] = $href;
2173 if (!empty($item["attach"])) {
2174 $item["attach"] .= ",";
2176 $item["attach"] = "";
2179 $item["attach"] .= '[attach]href="' . $href . '" length="' . $length . '" type="' . $type . '" title="' . $title . '"[/attach]';
2187 * Checks if an incoming message is wanted
2189 * @param array $item
2190 * @return boolean Is the message wanted?
2192 private static function isSolicitedMessage(array $item)
2194 if (DBA::exists('contact', ["`nurl` = ? AND `uid` != ? AND `rel` IN (?, ?)",
2195 Strings::normaliseLink($item["author-link"]), 0, Contact::FRIEND, Contact::SHARING])) {
2196 Logger::info('Author has got followers - accepted', ['uri' => $item['uri'], 'author' => $item["author-link"]]);
2200 $taglist = Tag::getByURIId($item['uri-id'], [Tag::HASHTAG]);
2201 $tags = array_column($taglist, 'name');
2202 return Relay::isSolicitedPost($tags, $item['body'], $item['author-id'], $item['uri'], Protocol::DFRN);
2206 * Processes the entry elements which contain the items and comments
2208 * @param array $header Array of the header elements that always stay the same
2209 * @param object $xpath XPath object
2210 * @param object $entry entry elements
2211 * @param array $importer Record of the importer user mixed with contact of the content
2212 * @param string $xml xml
2214 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2215 * @throws \ImagickException
2216 * @todo Add type-hints
2218 private static function processEntry($header, $xpath, $entry, $importer, $xml)
2220 Logger::log("Processing entries");
2224 $item["protocol"] = Conversation::PARCEL_DFRN;
2226 $item["source"] = $xml;
2229 $item["uri"] = XML::getFirstNodeValue($xpath, "atom:id/text()", $entry);
2231 $item["edited"] = XML::getFirstNodeValue($xpath, "atom:updated/text()", $entry);
2233 $current = Item::selectFirst(['id', 'uid', 'edited', 'body'],
2234 ['uri' => $item["uri"], 'uid' => $importer["importer_uid"]]
2236 // Is there an existing item?
2237 if (DBA::isResult($current) && !self::isEditedTimestampNewer($current, $item)) {
2238 Logger::log("Item ".$item["uri"]." (".$item['edited'].") already existed.", Logger::DEBUG);
2243 $owner = self::fetchauthor($xpath, $entry, $importer, "dfrn:owner", true, $xml);
2245 $owner_unknown = (isset($owner["contact-unknown"]) && $owner["contact-unknown"]);
2247 $item["owner-name"] = $owner["name"];
2248 $item["owner-link"] = $owner["link"];
2249 $item["owner-avatar"] = $owner["avatar"];
2250 $item["owner-id"] = Contact::getIdForURL($owner["link"], 0);
2253 $author = self::fetchauthor($xpath, $entry, $importer, "atom:author", true, $xml);
2255 $item["author-name"] = $author["name"];
2256 $item["author-link"] = $author["link"];
2257 $item["author-avatar"] = $author["avatar"];
2258 $item["author-id"] = Contact::getIdForURL($author["link"], 0);
2260 $item["title"] = XML::getFirstNodeValue($xpath, "atom:title/text()", $entry);
2262 $item["created"] = XML::getFirstNodeValue($xpath, "atom:published/text()", $entry);
2264 $item["body"] = XML::getFirstNodeValue($xpath, "dfrn:env/text()", $entry);
2265 $item["body"] = str_replace([' ',"\t","\r","\n"], ['','','',''], $item["body"]);
2267 $item["body"] = Strings::base64UrlDecode($item["body"]);
2269 $item["body"] = BBCode::limitBodySize($item["body"]);
2271 /// @todo We should check for a repeated post and if we know the repeated author.
2273 // We don't need the content element since "dfrn:env" is always present
2274 //$item["body"] = $xpath->query("atom:content/text()", $entry)->item(0)->nodeValue;
2276 $item["location"] = XML::getFirstNodeValue($xpath, "dfrn:location/text()", $entry);
2278 $item["coord"] = XML::getFirstNodeValue($xpath, "georss:point", $entry);
2280 $item["private"] = XML::getFirstNodeValue($xpath, "dfrn:private/text()", $entry);
2282 $unlisted = XML::getFirstNodeValue($xpath, "dfrn:unlisted/text()", $entry);
2283 if (!empty($unlisted) && ($item['private'] != Item::PRIVATE)) {
2284 $item['private'] = Item::UNLISTED;
2287 $item["extid"] = XML::getFirstNodeValue($xpath, "dfrn:extid/text()", $entry);
2289 if (XML::getFirstNodeValue($xpath, "dfrn:bookmark/text()", $entry) == "true") {
2290 $item["post-type"] = Item::PT_PAGE;
2293 $notice_info = $xpath->query("statusnet:notice_info", $entry);
2294 if ($notice_info && ($notice_info->length > 0)) {
2295 foreach ($notice_info->item(0)->attributes as $attributes) {
2296 if ($attributes->name == "source") {
2297 $item["app"] = strip_tags($attributes->textContent);
2302 $item["guid"] = XML::getFirstNodeValue($xpath, "dfrn:diaspora_guid/text()", $entry);
2304 $item['uri-id'] = ItemURI::insert(['uri' => $item['uri'], 'guid' => $item['guid']]);
2306 Tag::storeFromBody($item['uri-id'], $item["body"]);
2308 // We store the data from "dfrn:diaspora_signature" in a different table, this is done in "Item::insert"
2309 $dsprsig = XML::unescape(XML::getFirstNodeValue($xpath, "dfrn:diaspora_signature/text()", $entry));
2310 if ($dsprsig != "") {
2311 $signature = json_decode(base64_decode($dsprsig));
2312 // We don't store the old style signatures anymore that also contained the "signature" and "signer"
2313 if (!empty($signature->signed_text) && empty($signature->signature) && empty($signature->signer)) {
2314 $item["diaspora_signed_text"] = $signature->signed_text;
2318 $item["verb"] = XML::getFirstNodeValue($xpath, "activity:verb/text()", $entry);
2320 if (XML::getFirstNodeValue($xpath, "activity:object-type/text()", $entry) != "") {
2321 $item["object-type"] = XML::getFirstNodeValue($xpath, "activity:object-type/text()", $entry);
2324 $object = $xpath->query("activity:object", $entry)->item(0);
2325 $item["object"] = self::transformActivity($xpath, $object, "object");
2327 if (trim($item["object"]) != "") {
2328 $r = XML::parseString($item["object"]);
2329 if (isset($r->type)) {
2330 $item["object-type"] = $r->type;
2334 $target = $xpath->query("activity:target", $entry)->item(0);
2335 $item["target"] = self::transformActivity($xpath, $target, "target");
2337 $categories = $xpath->query("atom:category", $entry);
2339 foreach ($categories as $category) {
2342 foreach ($category->attributes as $attributes) {
2343 if ($attributes->name == "term") {
2344 $term = $attributes->textContent;
2347 if ($attributes->name == "scheme") {
2348 $scheme = $attributes->textContent;
2352 if (($term != "") && ($scheme != "")) {
2353 $parts = explode(":", $scheme);
2354 if ((count($parts) >= 4) && (array_shift($parts) == "X-DFRN")) {
2355 $termurl = array_pop($parts);
2356 $termurl = array_pop($parts) . ':' . $termurl;
2357 Tag::store($item['uri-id'], Tag::IMPLICIT_MENTION, $term, $termurl);
2363 $links = $xpath->query("atom:link", $entry);
2365 self::parseLinks($links, $item);
2368 $item['conversation-uri'] = XML::getFirstNodeValue($xpath, 'ostatus:conversation/text()', $entry);
2370 $conv = $xpath->query('ostatus:conversation', $entry);
2371 if (is_object($conv->item(0))) {
2372 foreach ($conv->item(0)->attributes as $attributes) {
2373 if ($attributes->name == "ref") {
2374 $item['conversation-uri'] = $attributes->textContent;
2376 if ($attributes->name == "href") {
2377 $item['conversation-href'] = $attributes->textContent;
2382 // Is it a reply or a top level posting?
2383 $item["parent-uri"] = $item["uri"];
2385 $inreplyto = $xpath->query("thr:in-reply-to", $entry);
2386 if (is_object($inreplyto->item(0))) {
2387 foreach ($inreplyto->item(0)->attributes as $attributes) {
2388 if ($attributes->name == "ref") {
2389 $item["parent-uri"] = $attributes->textContent;
2394 // Check if the message is wanted
2395 if (($importer["importer_uid"] == 0) && ($item['uri'] == $item['parent-uri'])) {
2396 if (!self::isSolicitedMessage($item)) {
2397 DBA::delete('item-uri', ['uri' => $item['uri']]);
2402 // Get the type of the item (Top level post, reply or remote reply)
2403 $entrytype = self::getEntryType($importer, $item);
2405 // Now assign the rest of the values that depend on the type of the message
2406 if (in_array($entrytype, [DFRN::REPLY, DFRN::REPLY_RC])) {
2407 if (!isset($item["object-type"])) {
2408 $item["object-type"] = Activity\ObjectType::COMMENT;
2411 if ($item["contact-id"] != $owner["contact-id"]) {
2412 $item["contact-id"] = $owner["contact-id"];
2415 if (($item["network"] != $owner["network"]) && ($owner["network"] != "")) {
2416 $item["network"] = $owner["network"];
2419 if ($item["contact-id"] != $author["contact-id"]) {
2420 $item["contact-id"] = $author["contact-id"];
2423 if (($item["network"] != $author["network"]) && ($author["network"] != "")) {
2424 $item["network"] = $author["network"];
2428 // Ensure to have the correct share data
2429 $item = Item::addShareDataFromOriginal($item);
2431 if ($entrytype == DFRN::REPLY_RC) {
2433 } elseif ($entrytype == DFRN::TOP_LEVEL) {
2434 if (!isset($item["object-type"])) {
2435 $item["object-type"] = Activity\ObjectType::NOTE;
2439 if (($item["object-type"] == Activity\ObjectType::EVENT) && !$owner_unknown) {
2440 Logger::log("Item ".$item["uri"]." seems to contain an event.", Logger::DEBUG);
2441 $ev = Event::fromBBCode($item["body"]);
2442 if ((!empty($ev['desc']) || !empty($ev['summary'])) && !empty($ev['start'])) {
2443 Logger::log("Event in item ".$item["uri"]." was found.", Logger::DEBUG);
2444 $ev["cid"] = $importer["id"];
2445 $ev["uid"] = $importer["importer_uid"];
2446 $ev["uri"] = $item["uri"];
2447 $ev["edited"] = $item["edited"];
2448 $ev["private"] = $item["private"];
2449 $ev["guid"] = $item["guid"];
2450 $ev["plink"] = $item["plink"];
2452 $condition = ['uri' => $item["uri"], 'uid' => $importer["importer_uid"]];
2453 $event = DBA::selectFirst('event', ['id'], $condition);
2454 if (DBA::isResult($event)) {
2455 $ev["id"] = $event["id"];
2458 $event_id = Event::store($ev);
2459 Logger::log("Event ".$event_id." was stored", Logger::DEBUG);
2465 if (!self::processVerbs($entrytype, $importer, $item, $is_like)) {
2466 Logger::log("Exiting because 'processVerbs' told us so", Logger::DEBUG);
2470 // This check is done here to be able to receive connection requests in "processVerbs"
2471 if (($entrytype == DFRN::TOP_LEVEL) && $owner_unknown) {
2472 Logger::log("Item won't be stored because user " . $importer["importer_uid"] . " doesn't follow " . $item["owner-link"] . ".", Logger::DEBUG);
2477 // Update content if 'updated' changes
2478 if (DBA::isResult($current)) {
2479 if (self::updateContent($current, $item, $importer, $entrytype)) {
2480 Logger::log("Item ".$item["uri"]." was updated.", Logger::DEBUG);
2482 Logger::log("Item " . $item["uri"] . " already existed.", Logger::DEBUG);
2487 if (in_array($entrytype, [DFRN::REPLY, DFRN::REPLY_RC])) {
2488 // Will be overwritten for sharing accounts in Item::insert
2489 if (empty($item['post-type']) && ($entrytype == DFRN::REPLY)) {
2490 $item['post-type'] = Item::PT_COMMENT;
2493 $posted_id = Item::insert($item);
2495 Logger::log("Reply from contact ".$item["contact-id"]." was stored with id ".$posted_id, Logger::DEBUG);
2497 if ($item['uid'] == 0) {
2498 Item::distribute($posted_id);
2503 } else { // $entrytype == DFRN::TOP_LEVEL
2504 if (($importer["uid"] == 0) && ($importer["importer_uid"] != 0)) {
2505 Logger::log("Contact ".$importer["id"]." isn't known to user ".$importer["importer_uid"].". The post will be ignored.", Logger::DEBUG);
2508 if (!Strings::compareLink($item["owner-link"], $importer["url"])) {
2510 * The item owner info is not our contact. It's OK and is to be expected if this is a tgroup delivery,
2511 * but otherwise there's a possible data mixup on the sender's system.
2512 * the tgroup delivery code called from Item::insert will correct it if it's a forum,
2513 * but we're going to unconditionally correct it here so that the post will always be owned by our contact.
2515 Logger::log('Correcting item owner.', Logger::DEBUG);
2516 $item["owner-link"] = $importer["url"];
2517 $item["owner-id"] = Contact::getIdForURL($importer["url"], 0);
2520 if (($importer["rel"] == Contact::FOLLOWER) && (!self::tgroupCheck($importer["importer_uid"], $item))) {
2521 Logger::log("Contact ".$importer["id"]." is only follower and tgroup check was negative.", Logger::DEBUG);
2525 // This is my contact on another system, but it's really me.
2526 // Turn this into a wall post.
2527 $notify = Item::isRemoteSelf($importer, $item);
2529 $posted_id = Item::insert($item, $notify);
2532 $posted_id = $notify;
2535 Logger::log("Item was stored with id ".$posted_id, Logger::DEBUG);
2537 if ($item['uid'] == 0) {
2538 Item::distribute($posted_id);
2541 if (stristr($item["verb"], Activity::POKE)) {
2542 $item['id'] = $posted_id;
2543 self::doPoke($item, $importer);
2551 * @param object $xpath XPath object
2552 * @param object $deletion deletion elements
2553 * @param array $importer Record of the importer user mixed with contact of the content
2555 * @throws \Exception
2556 * @todo set proper type-hints
2558 private static function processDeletion($xpath, $deletion, $importer)
2560 Logger::log("Processing deletions");
2563 foreach ($deletion->attributes as $attributes) {
2564 if ($attributes->name == "ref") {
2565 $uri = $attributes->textContent;
2569 if (!$uri || !$importer["id"]) {
2573 $condition = ['uri' => $uri, 'uid' => $importer["importer_uid"]];
2574 $item = Item::selectFirst(['id', 'parent', 'contact-id', 'file', 'deleted', 'gravity'], $condition);
2575 if (!DBA::isResult($item)) {
2576 Logger::log("Item with uri " . $uri . " for user " . $importer["importer_uid"] . " wasn't found.", Logger::DEBUG);
2580 if (strstr($item['file'], '[')) {
2581 Logger::log("Item with uri " . $uri . " for user " . $importer["importer_uid"] . " is filed. So it won't be deleted.", Logger::DEBUG);
2585 // When it is a starting post it has to belong to the person that wants to delete it
2586 if (($item['gravity'] == GRAVITY_PARENT) && ($item['contact-id'] != $importer["id"])) {
2587 Logger::log("Item with uri " . $uri . " don't belong to contact " . $importer["id"] . " - ignoring deletion.", Logger::DEBUG);
2591 // Comments can be deleted by the thread owner or comment owner
2592 if (($item['gravity'] != GRAVITY_PARENT) && ($item['contact-id'] != $importer["id"])) {
2593 $condition = ['id' => $item['parent'], 'contact-id' => $importer["id"]];
2594 if (!Item::exists($condition)) {
2595 Logger::log("Item with uri " . $uri . " wasn't found or mustn't be deleted by contact " . $importer["id"] . " - ignoring deletion.", Logger::DEBUG);
2600 if ($item["deleted"]) {
2604 Logger::log('deleting item '.$item['id'].' uri='.$uri, Logger::DEBUG);
2606 Item::markForDeletion(['id' => $item['id']]);
2610 * Imports a DFRN message
2612 * @param string $xml The DFRN message
2613 * @param array $importer Record of the importer user mixed with contact of the content
2614 * @param bool $sort_by_date Is used when feeds are polled
2615 * @return integer Import status
2616 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2617 * @throws \ImagickException
2618 * @todo set proper type-hints
2620 public static function import($xml, $importer, $sort_by_date = false)
2626 $doc = new DOMDocument();
2627 @$doc->loadXML($xml);
2629 $xpath = new DOMXPath($doc);
2630 $xpath->registerNamespace("atom", ActivityNamespace::ATOM1);
2631 $xpath->registerNamespace("thr", ActivityNamespace::THREAD);
2632 $xpath->registerNamespace("at", ActivityNamespace::TOMB);
2633 $xpath->registerNamespace("media", ActivityNamespace::MEDIA);
2634 $xpath->registerNamespace("dfrn", ActivityNamespace::DFRN);
2635 $xpath->registerNamespace("activity", ActivityNamespace::ACTIVITY);
2636 $xpath->registerNamespace("georss", ActivityNamespace::GEORSS);
2637 $xpath->registerNamespace("poco", ActivityNamespace::POCO);
2638 $xpath->registerNamespace("ostatus", ActivityNamespace::OSTATUS);
2639 $xpath->registerNamespace("statusnet", ActivityNamespace::STATUSNET);
2642 $header["uid"] = $importer["importer_uid"];
2643 $header["network"] = Protocol::DFRN;
2644 $header["wall"] = 0;
2645 $header["origin"] = 0;
2646 $header["contact-id"] = $importer["id"];
2648 // Update the contact table if the data has changed
2650 // The "atom:author" is only present in feeds
2651 if ($xpath->query("/atom:feed/atom:author")->length > 0) {
2652 self::fetchauthor($xpath, $doc->firstChild, $importer, "atom:author", false, $xml);
2655 // Only the "dfrn:owner" in the head section contains all data
2656 if ($xpath->query("/atom:feed/dfrn:owner")->length > 0) {
2657 self::fetchauthor($xpath, $doc->firstChild, $importer, "dfrn:owner", false, $xml);
2660 Logger::log("Import DFRN message for user " . $importer["importer_uid"] . " from contact " . $importer["id"], Logger::DEBUG);
2662 // is it a public forum? Private forums aren't exposed with this method
2663 $forum = intval(XML::getFirstNodeValue($xpath, "/atom:feed/dfrn:community/text()"));
2665 // The account type is new since 3.5.1
2666 if ($xpath->query("/atom:feed/dfrn:account_type")->length > 0) {
2667 // Hint: We are using separate update calls for uid=0 and uid!=0 since a combined call is bad for the database performance
2669 $accounttype = intval(XML::getFirstNodeValue($xpath, "/atom:feed/dfrn:account_type/text()"));
2671 if ($accounttype != $importer["contact-type"]) {
2672 DBA::update('contact', ['contact-type' => $accounttype], ['id' => $importer['id']]);
2674 // Updating the public contact as well
2675 DBA::update('contact', ['contact-type' => $accounttype], ['uid' => 0, 'nurl' => $importer['nurl']]);
2677 // A forum contact can either have set "forum" or "prv" - but not both
2678 if ($accounttype == User::ACCOUNT_TYPE_COMMUNITY) {
2679 // It's a forum, so either set the public or private forum flag
2680 $condition = ['(`forum` != ? OR `prv` != ?) AND `id` = ?', $forum, !$forum, $importer['id']];
2681 DBA::update('contact', ['forum' => $forum, 'prv' => !$forum], $condition);
2683 // Updating the public contact as well
2684 $condition = ['(`forum` != ? OR `prv` != ?) AND `uid` = 0 AND `nurl` = ?', $forum, !$forum, $importer['nurl']];
2685 DBA::update('contact', ['forum' => $forum, 'prv' => !$forum], $condition);
2687 // It's not a forum, so remove the flags
2688 $condition = ['(`forum` OR `prv`) AND `id` = ?', $importer['id']];
2689 DBA::update('contact', ['forum' => false, 'prv' => false], $condition);
2691 // Updating the public contact as well
2692 $condition = ['(`forum` OR `prv`) AND `uid` = 0 AND `nurl` = ?', $importer['nurl']];
2693 DBA::update('contact', ['forum' => false, 'prv' => false], $condition);
2695 } elseif ($forum != $importer["forum"]) { // Deprecated since 3.5.1
2696 $condition = ['`forum` != ? AND `id` = ?', $forum, $importer["id"]];
2697 DBA::update('contact', ['forum' => $forum], $condition);
2699 // Updating the public contact as well
2700 $condition = ['`forum` != ? AND `uid` = 0 AND `nurl` = ?', $forum, $importer['nurl']];
2701 DBA::update('contact', ['forum' => $forum], $condition);
2705 // We are processing relocations even if we are ignoring a contact
2706 $relocations = $xpath->query("/atom:feed/dfrn:relocate");
2707 foreach ($relocations as $relocation) {
2708 self::processRelocation($xpath, $relocation, $importer);
2711 if (($importer["uid"] != 0) && !$importer["readonly"]) {
2712 $mails = $xpath->query("/atom:feed/dfrn:mail");
2713 foreach ($mails as $mail) {
2714 self::processMail($xpath, $mail, $importer);
2717 $suggestions = $xpath->query("/atom:feed/dfrn:suggest");
2718 foreach ($suggestions as $suggestion) {
2719 self::processSuggestion($xpath, $suggestion, $importer);
2723 $deletions = $xpath->query("/atom:feed/at:deleted-entry");
2724 foreach ($deletions as $deletion) {
2725 self::processDeletion($xpath, $deletion, $importer);
2728 if (!$sort_by_date) {
2729 $entries = $xpath->query("/atom:feed/atom:entry");
2730 foreach ($entries as $entry) {
2731 self::processEntry($header, $xpath, $entry, $importer, $xml);
2735 $entries = $xpath->query("/atom:feed/atom:entry");
2736 foreach ($entries as $entry) {
2737 $created = XML::getFirstNodeValue($xpath, "atom:published/text()", $entry);
2738 $newentries[strtotime($created)] = $entry;
2741 // Now sort after the publishing date
2744 foreach ($newentries as $entry) {
2745 self::processEntry($header, $xpath, $entry, $importer, $xml);
2748 Logger::log("Import done for user " . $importer["importer_uid"] . " from contact " . $importer["id"], Logger::DEBUG);
2753 * Returns the activity verb
2755 * @param array $item Item array
2757 * @return string activity verb
2759 private static function constructVerb(array $item)
2761 if ($item['verb']) {
2762 return $item['verb'];
2764 return Activity::POST;
2767 private static function tgroupCheck($uid, $item)
2771 // check that the message originated elsewhere and is a top-level post
2773 if ($item['wall'] || $item['origin'] || ($item['uri'] != $item['parent-uri'])) {
2777 $user = DBA::selectFirst('user', ['page-flags', 'nickname'], ['uid' => $uid]);
2778 if (!DBA::isResult($user)) {
2782 $community_page = ($user['page-flags'] == User::PAGE_FLAGS_COMMUNITY);
2783 $prvgroup = ($user['page-flags'] == User::PAGE_FLAGS_PRVGROUP);
2785 $link = Strings::normaliseLink(DI::baseUrl() . '/profile/' . $user['nickname']);
2788 * Diaspora uses their own hardwired link URL in @-tags
2789 * instead of the one we supply with webfinger
2791 $dlink = Strings::normaliseLink(DI::baseUrl() . '/u/' . $user['nickname']);
2793 $cnt = preg_match_all('/[\@\!]\[url\=(.*?)\](.*?)\[\/url\]/ism', $item['body'], $matches, PREG_SET_ORDER);
2795 foreach ($matches as $mtch) {
2796 if (Strings::compareLink($link, $mtch[1]) || Strings::compareLink($dlink, $mtch[1])) {
2798 Logger::log('mention found: ' . $mtch[2]);
2807 return $community_page || $prvgroup;
2811 * This function returns true if $update has an edited timestamp newer
2812 * than $existing, i.e. $update contains new data which should override
2813 * what's already there. If there is no timestamp yet, the update is
2814 * assumed to be newer. If the update has no timestamp, the existing
2815 * item is assumed to be up-to-date. If the timestamps are equal it
2816 * assumes the update has been seen before and should be ignored.
2821 * @throws \Exception
2823 private static function isEditedTimestampNewer($existing, $update)
2825 if (empty($existing['edited'])) {
2828 if (empty($update['edited'])) {
2832 $existing_edited = DateTimeFormat::utc($existing['edited']);
2833 $update_edited = DateTimeFormat::utc($update['edited']);
2835 return (strcmp($existing_edited, $update_edited) < 0);
2839 * Checks if the given contact url does support DFRN
2841 * @param string $url profile url
2843 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2844 * @throws \ImagickException
2846 public static function isSupportedByContactUrl($url)
2848 $probe = Probe::uri($url, Protocol::DFRN);
2849 return $probe['network'] == Protocol::DFRN;