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;
24 use Friendica\Content\Feature;
25 use Friendica\Content\PageInfo;
26 use Friendica\Content\Text\BBCode;
27 use Friendica\Content\Text\Markdown;
28 use Friendica\Core\Cache\Duration;
29 use Friendica\Core\Logger;
30 use Friendica\Core\Protocol;
31 use Friendica\Core\System;
32 use Friendica\Core\Worker;
33 use Friendica\Database\DBA;
35 use Friendica\Model\Contact;
36 use Friendica\Model\Conversation;
37 use Friendica\Model\Item;
38 use Friendica\Model\ItemURI;
39 use Friendica\Model\Mail;
40 use Friendica\Model\Post;
41 use Friendica\Model\Tag;
42 use Friendica\Model\User;
43 use Friendica\Network\Probe;
44 use Friendica\Util\Crypto;
45 use Friendica\Util\DateTimeFormat;
46 use Friendica\Util\Map;
47 use Friendica\Util\Network;
48 use Friendica\Util\Strings;
49 use Friendica\Util\XML;
50 use Friendica\Worker\Delivery;
54 * This class contain functions to create and send Diaspora XML files
59 * Mark the relay contact of the given contact for archival
60 * This is called whenever there is a communication issue with the server.
61 * It avoids sending stuff to servers who don't exist anymore.
62 * The relay contact is a technical contact entry that exists once per server.
64 * @param array $contact of the relay contact
66 public static function markRelayForArchival(array $contact)
68 if (!empty($contact['contact-type']) && ($contact['contact-type'] == Contact::TYPE_RELAY)) {
69 // This is already the relay contact, we don't need to fetch it
70 $relay_contact = $contact;
71 } elseif (empty($contact['baseurl'])) {
72 if (!empty($contact['batch'])) {
73 $condition = ['uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => Contact::TYPE_RELAY];
74 $relay_contact = DBA::selectFirst('contact', [], $condition);
79 $relay_contact = self::getRelayContact($contact['baseurl'], []);
82 if (!empty($relay_contact)) {
83 Logger::info('Relay contact will be marked for archival', ['id' => $relay_contact['id'], 'url' => $relay_contact['url']]);
84 Contact::markForArchival($relay_contact);
89 * Return a list of relay servers
91 * The list contains not only the official relays but also servers that we serve directly
93 * @param integer $item_id The id of the item that is sent
94 * @param array $contacts The previously fetched contacts
96 * @return array of relay servers
97 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
99 public static function relayList($item_id, array $contacts = [])
103 // Fetching relay servers
104 $serverdata = DI::config()->get("system", "relay_server");
106 if (!empty($serverdata)) {
107 $servers = explode(",", $serverdata);
108 foreach ($servers as $server) {
109 $serverlist[$server] = trim($server);
113 if (DI::config()->get("system", "relay_directly", false)) {
114 // We distribute our stuff based on the parent to ensure that the thread will be complete
115 $parent = Item::selectFirst(['uri-id'], ['id' => $item_id]);
116 if (!DBA::isResult($parent)) {
120 // Servers that want to get all content
121 $servers = DBA::select('gserver', ['url'], ['relay-subscribe' => true, 'relay-scope' => 'all']);
122 while ($server = DBA::fetch($servers)) {
123 $serverlist[$server['url']] = $server['url'];
125 DBA::close($servers);
127 // All tags of the current post
128 $tags = DBA::select('tag-view', ['name'], ['uri-id' => $parent['uri-id'], 'type' => Tag::HASHTAG]);
130 while ($tag = DBA::fetch($tags)) {
131 $taglist[] = $tag['name'];
135 // All servers who wants content with this tag
137 if (!empty($taglist)) {
138 $tagserver = DBA::select('gserver-tag', ['gserver-id'], ['tag' => $taglist]);
139 while ($server = DBA::fetch($tagserver)) {
140 $tagserverlist[] = $server['gserver-id'];
142 DBA::close($tagserver);
145 // All adresses with the given id
146 if (!empty($tagserverlist)) {
147 $servers = DBA::select('gserver', ['url'], ['relay-subscribe' => true, 'relay-scope' => 'tags', 'id' => $tagserverlist]);
148 while ($server = DBA::fetch($servers)) {
149 $serverlist[$server['url']] = $server['url'];
151 DBA::close($servers);
155 // Now we are collecting all relay contacts
156 foreach ($serverlist as $server_url) {
157 // We don't send messages to ourselves
158 if (Strings::compareLink($server_url, DI::baseUrl())) {
161 $contact = self::getRelayContact($server_url);
162 if (is_bool($contact)) {
167 foreach ($contacts as $entry) {
168 if ($entry['batch'] == $contact['batch']) {
174 $contacts[] = $contact;
182 * Return a contact for a given server address or creates a dummy entry
184 * @param string $server_url The url of the server
185 * @param array $fields Fieldlist
186 * @return array with the contact
189 private static function getRelayContact(string $server_url, array $fields = ['batch', 'id', 'url', 'name', 'network', 'protocol', 'archive', 'blocked'])
191 // Fetch the relay contact
192 $condition = ['uid' => 0, 'nurl' => Strings::normaliseLink($server_url),
193 'contact-type' => Contact::TYPE_RELAY];
194 $contact = DBA::selectFirst('contact', $fields, $condition);
196 if (DBA::isResult($contact)) {
197 if ($contact['archive'] || $contact['blocked']) {
202 self::setRelayContact($server_url);
204 $contact = DBA::selectFirst('contact', $fields, $condition);
205 if (DBA::isResult($contact)) {
210 // It should never happen that we arrive here
215 * Update or insert a relay contact
217 * @param string $server_url The url of the server
218 * @param array $network_fields Optional network specific fields
221 public static function setRelayContact($server_url, array $network_fields = [])
223 $fields = ['created' => DateTimeFormat::utcNow(),
224 'name' => 'relay', 'nick' => 'relay', 'url' => $server_url,
225 'nurl' => Strings::normaliseLink($server_url),
226 'network' => Protocol::DIASPORA, 'uid' => 0,
227 'batch' => $server_url . '/receive/public',
228 'rel' => Contact::FOLLOWER, 'blocked' => false,
229 'pending' => false, 'writable' => true,
230 'baseurl' => $server_url, 'contact-type' => Contact::TYPE_RELAY];
232 $fields = array_merge($fields, $network_fields);
234 $condition = ['uid' => 0, 'nurl' => Strings::normaliseLink($server_url)];
235 $old = DBA::selectFirst('contact', [], $condition);
236 if (DBA::isResult($old)) {
237 unset($fields['created']);
238 $condition = ['id' => $old['id']];
240 Logger::info('Update relay contact', ['fields' => $fields, 'condition' => $condition]);
241 DBA::update('contact', $fields, $condition, $old);
243 Logger::info('Create relay contact', ['fields' => $fields]);
244 Contact::insert($fields);
249 * Return a list of participating contacts for a thread
251 * This is used for the participation feature.
252 * One of the parameters is a contact array.
253 * This is done to avoid duplicates.
255 * @param array $item Item that is about to be delivered
256 * @param array $contacts The previously fetched contacts
258 * @return array of relay servers
261 public static function participantsForThread(array $item, array $contacts)
263 if (!in_array($item['private'], [Item::PUBLIC, Item::UNLISTED]) || in_array($item["verb"], [Activity::FOLLOW, Activity::TAG])) {
264 Logger::info('Item is private or a participation request. It will not be relayed', ['guid' => $item['guid'], 'private' => $item['private'], 'verb' => $item['verb']]);
268 $items = Item::select(['author-id', 'author-link', 'parent-author-link', 'parent-guid', 'guid'],
269 ['parent' => $item['parent'], 'gravity' => [GRAVITY_COMMENT, GRAVITY_ACTIVITY]]);
270 while ($item = DBA::fetch($items)) {
271 $contact = DBA::selectFirst('contact', ['id', 'url', 'name', 'protocol', 'batch', 'network'],
272 ['id' => $item['author-id']]);
273 if (!DBA::isResult($contact) || empty($contact['batch']) ||
274 ($contact['network'] != Protocol::DIASPORA) ||
275 Strings::compareLink($item['parent-author-link'], $item['author-link'])) {
280 foreach ($contacts as $entry) {
281 if ($entry['batch'] == $contact['batch']) {
287 Logger::info('Add participant to receiver list', ['parent' => $item['parent-guid'], 'item' => $item['guid'], 'participant' => $contact['url']]);
288 $contacts[] = $contact;
297 * verify the envelope and return the verified data
299 * @param string $envelope The magic envelope
301 * @return string verified data
302 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
303 * @throws \ImagickException
305 private static function verifyMagicEnvelope($envelope)
307 $basedom = XML::parseString($envelope, true);
309 if (!is_object($basedom)) {
310 Logger::log("Envelope is no XML file");
314 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
316 if (sizeof($children) == 0) {
317 Logger::log("XML has no children");
323 $data = Strings::base64UrlDecode($children->data);
324 $type = $children->data->attributes()->type[0];
326 $encoding = $children->encoding;
328 $alg = $children->alg;
330 $sig = Strings::base64UrlDecode($children->sig);
331 $key_id = $children->sig->attributes()->key_id[0];
333 $handle = Strings::base64UrlDecode($key_id);
336 $b64url_data = Strings::base64UrlEncode($data);
337 $msg = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
339 $signable_data = $msg.".".Strings::base64UrlEncode($type).".".Strings::base64UrlEncode($encoding).".".Strings::base64UrlEncode($alg);
342 Logger::log('No author could be decoded. Discarding. Message: ' . $envelope);
346 $key = self::key($handle);
348 Logger::log("Couldn't get a key for handle " . $handle . ". Discarding.");
352 $verify = Crypto::rsaVerify($signable_data, $sig, $key);
354 Logger::log('Message from ' . $handle . ' did not verify. Discarding.');
362 * encrypts data via AES
364 * @param string $key The AES key
365 * @param string $iv The IV (is used for CBC encoding)
366 * @param string $data The data that is to be encrypted
368 * @return string encrypted data
370 private static function aesEncrypt($key, $iv, $data)
372 return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
376 * decrypts data via AES
378 * @param string $key The AES key
379 * @param string $iv The IV (is used for CBC encoding)
380 * @param string $encrypted The encrypted data
382 * @return string decrypted data
384 private static function aesDecrypt($key, $iv, $encrypted)
386 return openssl_decrypt($encrypted, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
390 * Decodes incoming Diaspora message in the new format
392 * @param string $raw raw post message
393 * @param string $privKey The private key of the importer
394 * @param boolean $no_exit Don't do an http exit on error
397 * 'message' -> decoded Diaspora XML message
398 * 'author' -> author diaspora handle
399 * 'key' -> author public key (converted to pkcs#8)
400 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
401 * @throws \ImagickException
403 public static function decodeRaw(string $raw, string $privKey = '', bool $no_exit = false)
405 $data = json_decode($raw);
407 // Is it a private post? Then decrypt the outer Salmon
408 if (is_object($data)) {
409 $encrypted_aes_key_bundle = base64_decode($data->aes_key);
410 $ciphertext = base64_decode($data->encrypted_magic_envelope);
412 $outer_key_bundle = '';
413 @openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $privKey);
414 $j_outer_key_bundle = json_decode($outer_key_bundle);
416 if (!is_object($j_outer_key_bundle)) {
417 Logger::log('Outer Salmon did not verify. Discarding.');
421 throw new \Friendica\Network\HTTPException\BadRequestException();
425 $outer_iv = base64_decode($j_outer_key_bundle->iv);
426 $outer_key = base64_decode($j_outer_key_bundle->key);
428 $xml = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
433 $basedom = XML::parseString($xml, true);
435 if (!is_object($basedom)) {
436 Logger::log('Received data does not seem to be an XML. Discarding. '.$xml);
440 throw new \Friendica\Network\HTTPException\BadRequestException();
444 $base = $basedom->children(ActivityNamespace::SALMON_ME);
446 // Not sure if this cleaning is needed
447 $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
449 // Build the signed data
450 $type = $base->data[0]->attributes()->type[0];
451 $encoding = $base->encoding;
453 $signed_data = $data.'.'.Strings::base64UrlEncode($type).'.'.Strings::base64UrlEncode($encoding).'.'.Strings::base64UrlEncode($alg);
455 // This is the signature
456 $signature = Strings::base64UrlDecode($base->sig);
458 // Get the senders' public key
459 $key_id = $base->sig[0]->attributes()->key_id[0];
460 $author_addr = base64_decode($key_id);
461 if ($author_addr == '') {
462 Logger::log('No author could be decoded. Discarding. Message: ' . $xml);
466 throw new \Friendica\Network\HTTPException\BadRequestException();
470 $key = self::key($author_addr);
472 Logger::log("Couldn't get a key for handle " . $author_addr . ". Discarding.");
476 throw new \Friendica\Network\HTTPException\BadRequestException();
480 $verify = Crypto::rsaVerify($signed_data, $signature, $key);
482 Logger::log('Message did not verify. Discarding.');
486 throw new \Friendica\Network\HTTPException\BadRequestException();
490 return ['message' => (string)Strings::base64UrlDecode($base->data),
491 'author' => XML::unescape($author_addr),
492 'key' => (string)$key];
496 * Decodes incoming Diaspora message in the deprecated format
498 * @param string $xml urldecoded Diaspora salmon
499 * @param string $privKey The private key of the importer
502 * 'message' -> decoded Diaspora XML message
503 * 'author' -> author diaspora handle
504 * 'key' -> author public key (converted to pkcs#8)
505 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
506 * @throws \ImagickException
508 public static function decode(string $xml, string $privKey = '')
511 $basedom = XML::parseString($xml);
513 if (!is_object($basedom)) {
514 Logger::notice('XML is not parseable.');
517 $children = $basedom->children('https://joindiaspora.com/protocol');
519 $inner_aes_key = null;
522 if ($children->header) {
524 $author_link = str_replace('acct:', '', $children->header->author_id);
526 // This happens with posts from a relais
527 if (empty($privKey)) {
528 Logger::info('This is no private post in the old format');
532 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
534 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
535 $ciphertext = base64_decode($encrypted_header->ciphertext);
537 $outer_key_bundle = '';
538 openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $privKey);
540 $j_outer_key_bundle = json_decode($outer_key_bundle);
542 $outer_iv = base64_decode($j_outer_key_bundle->iv);
543 $outer_key = base64_decode($j_outer_key_bundle->key);
545 $decrypted = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
547 Logger::info('decrypted', ['data' => $decrypted]);
548 $idom = XML::parseString($decrypted);
550 $inner_iv = base64_decode($idom->iv);
551 $inner_aes_key = base64_decode($idom->aes_key);
553 $author_link = str_replace('acct:', '', $idom->author_id);
556 $dom = $basedom->children(ActivityNamespace::SALMON_ME);
558 // figure out where in the DOM tree our data is hiding
561 if ($dom->provenance->data) {
562 $base = $dom->provenance;
563 } elseif ($dom->env->data) {
565 } elseif ($dom->data) {
570 Logger::log('unable to locate salmon data in xml');
571 throw new \Friendica\Network\HTTPException\BadRequestException();
575 // Stash the signature away for now. We have to find their key or it won't be good for anything.
576 $signature = Strings::base64UrlDecode($base->sig);
580 // strip whitespace so our data element will return to one big base64 blob
581 $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
584 // stash away some other stuff for later
586 $type = $base->data[0]->attributes()->type[0];
587 $keyhash = $base->sig[0]->attributes()->keyhash[0];
588 $encoding = $base->encoding;
592 $signed_data = $data.'.'.Strings::base64UrlEncode($type).'.'.Strings::base64UrlEncode($encoding).'.'.Strings::base64UrlEncode($alg);
596 $data = Strings::base64UrlDecode($data);
600 $inner_decrypted = $data;
602 // Decode the encrypted blob
603 $inner_encrypted = base64_decode($data);
604 $inner_decrypted = self::aesDecrypt($inner_aes_key, $inner_iv, $inner_encrypted);
608 Logger::log('Could not retrieve author URI.');
609 throw new \Friendica\Network\HTTPException\BadRequestException();
611 // Once we have the author URI, go to the web and try to find their public key
612 // (first this will look it up locally if it is in the fcontact cache)
613 // This will also convert diaspora public key from pkcs#1 to pkcs#8
615 Logger::log('Fetching key for '.$author_link);
616 $key = self::key($author_link);
619 Logger::log('Could not retrieve author key.');
620 throw new \Friendica\Network\HTTPException\BadRequestException();
623 $verify = Crypto::rsaVerify($signed_data, $signature, $key);
626 Logger::log('Message did not verify. Discarding.');
627 throw new \Friendica\Network\HTTPException\BadRequestException();
630 Logger::log('Message verified.');
632 return ['message' => (string)$inner_decrypted,
633 'author' => XML::unescape($author_link),
634 'key' => (string)$key];
639 * Dispatches public messages and find the fitting receivers
641 * @param array $msg The post that will be dispatched
643 * @return int The message id of the generated message, "true" or "false" if there was an error
644 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
645 * @throws \ImagickException
647 public static function dispatchPublic($msg)
649 $enabled = intval(DI::config()->get("system", "diaspora_enabled"));
651 Logger::log("diaspora is disabled");
655 if (!($fields = self::validPosting($msg))) {
656 Logger::log("Invalid posting");
660 $importer = ["uid" => 0, "page-flags" => User::PAGE_FLAGS_FREELOVE];
661 $success = self::dispatch($importer, $msg, $fields);
667 * Dispatches the different message types to the different functions
669 * @param array $importer Array of the importer user
670 * @param array $msg The post that will be dispatched
671 * @param SimpleXMLElement $fields SimpleXML object that contains the message
673 * @return int The message id of the generated message, "true" or "false" if there was an error
674 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
675 * @throws \ImagickException
677 public static function dispatch(array $importer, $msg, SimpleXMLElement $fields = null)
679 // The sender is the handle of the contact that sent the message.
680 // This will often be different with relayed messages (for example "like" and "comment")
681 $sender = $msg["author"];
683 // This is only needed for private postings since this is already done for public ones before
684 if (is_null($fields)) {
686 if (!($fields = self::validPosting($msg))) {
687 Logger::log("Invalid posting");
694 $type = $fields->getName();
696 Logger::info('Received message', ['type' => $type, 'sender' => $sender, 'user' => $importer["uid"]]);
699 case "account_migration":
701 Logger::log('Message with type ' . $type . ' is not private, quitting.');
704 return self::receiveAccountMigration($importer, $fields);
706 case "account_deletion":
707 return self::receiveAccountDeletion($fields);
710 return self::receiveComment($importer, $sender, $fields, $msg["message"]);
714 Logger::log('Message with type ' . $type . ' is not private, quitting.');
717 return self::receiveContactRequest($importer, $fields);
721 Logger::log('Message with type ' . $type . ' is not private, quitting.');
724 return self::receiveConversation($importer, $msg, $fields);
727 return self::receiveLike($importer, $sender, $fields);
731 Logger::log('Message with type ' . $type . ' is not private, quitting.');
734 return self::receiveMessage($importer, $fields);
736 case "participation":
738 Logger::log('Message with type ' . $type . ' is not private, quitting.');
741 return self::receiveParticipation($importer, $fields);
743 case "photo": // Not implemented
744 return self::receivePhoto($importer, $fields);
746 case "poll_participation": // Not implemented
747 return self::receivePollParticipation($importer, $fields);
751 Logger::log('Message with type ' . $type . ' is not private, quitting.');
754 return self::receiveProfile($importer, $fields);
757 return self::receiveReshare($importer, $fields, $msg["message"]);
760 return self::receiveRetraction($importer, $sender, $fields);
762 case "status_message":
763 return self::receiveStatusMessage($importer, $fields, $msg["message"]);
766 Logger::log("Unknown message type ".$type);
772 * Checks if a posting is valid and fetches the data fields.
774 * This function does not only check the signature.
775 * It also does the conversion between the old and the new diaspora format.
777 * @param array $msg Array with the XML, the sender handle and the sender signature
779 * @return bool|SimpleXMLElement If the posting is valid then an array with an SimpleXML object is returned
780 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
781 * @throws \ImagickException
783 private static function validPosting($msg)
785 $data = XML::parseString($msg["message"]);
787 if (!is_object($data)) {
788 Logger::info('No valid XML', ['message' => $msg['message']]);
792 // Is this the new or the old version?
793 if ($data->getName() == "XML") {
795 foreach ($data->post->children() as $child) {
803 $type = $element->getName();
806 Logger::log("Got message type ".$type.": ".$msg["message"], Logger::DATA);
808 // All retractions are handled identically from now on.
809 // In the new version there will only be "retraction".
810 if (in_array($type, ["signed_retraction", "relayable_retraction"]))
811 $type = "retraction";
813 if ($type == "request") {
817 $fields = new SimpleXMLElement("<".$type."/>");
820 $author_signature = null;
821 $parent_author_signature = null;
823 foreach ($element->children() as $fieldname => $entry) {
825 // Translation for the old XML structure
826 if ($fieldname == "diaspora_handle") {
827 $fieldname = "author";
829 if ($fieldname == "participant_handles") {
830 $fieldname = "participants";
832 if (in_array($type, ["like", "participation"])) {
833 if ($fieldname == "target_type") {
834 $fieldname = "parent_type";
837 if ($fieldname == "sender_handle") {
838 $fieldname = "author";
840 if ($fieldname == "recipient_handle") {
841 $fieldname = "recipient";
843 if ($fieldname == "root_diaspora_id") {
844 $fieldname = "root_author";
846 if ($type == "status_message") {
847 if ($fieldname == "raw_message") {
851 if ($type == "retraction") {
852 if ($fieldname == "post_guid") {
853 $fieldname = "target_guid";
855 if ($fieldname == "type") {
856 $fieldname = "target_type";
861 if (($fieldname == "author_signature") && ($entry != "")) {
862 $author_signature = base64_decode($entry);
863 } elseif (($fieldname == "parent_author_signature") && ($entry != "")) {
864 $parent_author_signature = base64_decode($entry);
865 } elseif (!in_array($fieldname, ["author_signature", "parent_author_signature", "target_author_signature"])) {
866 if ($signed_data != "") {
870 $signed_data .= $entry;
872 if (!in_array($fieldname, ["parent_author_signature", "target_author_signature"])
873 || ($orig_type == "relayable_retraction")
875 XML::copy($entry, $fields, $fieldname);
879 // This is something that shouldn't happen at all.
880 if (in_array($type, ["status_message", "reshare", "profile"])) {
881 if ($msg["author"] != $fields->author) {
882 Logger::log("Message handle is not the same as envelope sender. Quitting this message.");
887 // Only some message types have signatures. So we quit here for the other types.
888 if (!in_array($type, ["comment", "like"])) {
891 // No author_signature? This is a must, so we quit.
892 if (!isset($author_signature)) {
893 Logger::log("No author signature for type ".$type." - Message: ".$msg["message"], Logger::DEBUG);
897 if (isset($parent_author_signature)) {
898 $key = self::key($msg["author"]);
900 Logger::info('No key found for parent', ['author' => $msg["author"]]);
904 if (!Crypto::rsaVerify($signed_data, $parent_author_signature, $key, "sha256")) {
905 Logger::log("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, Logger::DEBUG);
910 $key = self::key($fields->author);
912 Logger::info('No key found', ['author' => $fields->author]);
916 if (!Crypto::rsaVerify($signed_data, $author_signature, $key, "sha256")) {
917 Logger::log("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, Logger::DEBUG);
925 * Fetches the public key for a given handle
927 * @param string $handle The handle
929 * @return string The public key
930 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
931 * @throws \ImagickException
933 private static function key($handle)
935 $handle = strval($handle);
937 Logger::log("Fetching diaspora key for: ".$handle);
939 $r = self::personByHandle($handle);
948 * Fetches data for a given handle
950 * @param string $handle The handle
951 * @param boolean $update true = always update, false = never update, null = update when not found or outdated
953 * @return array the queried data
954 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
955 * @throws \ImagickException
957 public static function personByHandle($handle, $update = null)
959 $person = DBA::selectFirst('fcontact', [], ['network' => Protocol::DIASPORA, 'addr' => $handle]);
960 if (!DBA::isResult($person)) {
961 $urls = [$handle, str_replace('http://', 'https://', $handle), Strings::normaliseLink($handle)];
962 $person = DBA::selectFirst('fcontact', [], ['network' => Protocol::DIASPORA, 'url' => $urls]);
965 if (DBA::isResult($person)) {
966 Logger::debug('In cache', ['person' => $person]);
968 if (is_null($update)) {
969 // update record occasionally so it doesn't get stale
970 $d = strtotime($person["updated"]." +00:00");
971 if ($d < strtotime("now - 14 days")) {
975 if ($person["guid"] == "") {
979 } elseif (is_null($update)) {
980 $update = !DBA::isResult($person);
986 Logger::log("create or refresh", Logger::DEBUG);
987 $r = Probe::uri($handle, Protocol::DIASPORA);
989 // Note that Friendica contacts will return a "Diaspora person"
990 // if Diaspora connectivity is enabled on their server
991 if ($r && ($r["network"] === Protocol::DIASPORA)) {
992 self::updateFContact($r);
994 $person = self::personByHandle($handle, false);
1002 * Updates the fcontact table
1004 * @param array $arr The fcontact data
1005 * @throws \Exception
1007 private static function updateFContact($arr)
1009 $fields = ['name' => $arr["name"], 'photo' => $arr["photo"],
1010 'request' => $arr["request"], 'nick' => $arr["nick"],
1011 'addr' => strtolower($arr["addr"]), 'guid' => $arr["guid"],
1012 'batch' => $arr["batch"], 'notify' => $arr["notify"],
1013 'poll' => $arr["poll"], 'confirm' => $arr["confirm"],
1014 'alias' => $arr["alias"], 'pubkey' => $arr["pubkey"],
1015 'updated' => DateTimeFormat::utcNow()];
1017 $condition = ['url' => $arr["url"], 'network' => $arr["network"]];
1019 DBA::update('fcontact', $fields, $condition, true);
1023 * get a handle (user@domain.tld) from a given contact id
1025 * @param int $contact_id The id in the contact table
1026 * @param int $pcontact_id The id in the contact table (Used for the public contact)
1028 * @return string the handle
1029 * @throws \Exception
1031 private static function handleFromContact($contact_id, $pcontact_id = 0)
1035 Logger::log("contact id is ".$contact_id." - pcontact id is ".$pcontact_id, Logger::DEBUG);
1037 if ($pcontact_id != 0) {
1038 $contact = DBA::selectFirst('contact', ['addr'], ['id' => $pcontact_id]);
1040 if (DBA::isResult($contact) && !empty($contact["addr"])) {
1041 return strtolower($contact["addr"]);
1046 "SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
1050 if (DBA::isResult($r)) {
1053 Logger::log("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], Logger::DEBUG);
1055 if ($contact['addr'] != "") {
1056 $handle = $contact['addr'];
1058 $baseurl_start = strpos($contact['url'], '://') + 3;
1059 // allows installations in a subdirectory--not sure how Diaspora will handle
1060 $baseurl_length = strpos($contact['url'], '/profile') - $baseurl_start;
1061 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
1062 $handle = $contact['nick'].'@'.$baseurl;
1066 return strtolower($handle);
1070 * get a url (scheme://domain.tld/u/user) from a given Diaspora*
1073 * @param mixed $fcontact_guid Hexadecimal string guid
1075 * @return string the contact url or null
1076 * @throws \Exception
1078 public static function urlFromContactGuid($fcontact_guid)
1080 Logger::info('fcontact', ['guid' => $fcontact_guid]);
1083 "SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
1084 DBA::escape(Protocol::DIASPORA),
1085 DBA::escape($fcontact_guid)
1088 if (DBA::isResult($r)) {
1089 return $r[0]['url'];
1096 * Get a contact id for a given handle
1098 * @todo Move to Friendica\Model\Contact
1100 * @param int $uid The user id
1101 * @param string $handle The handle in the format user@domain.tld
1103 * @return array Contact data
1104 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1105 * @throws \ImagickException
1107 private static function contactByHandle($uid, $handle)
1109 return Contact::getByURL($handle, null, [], $uid);
1113 * Checks if the given contact url does support ActivityPub
1115 * @param string $url profile url
1116 * @param boolean $update true = always update, false = never update, null = update when not found or outdated
1118 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1119 * @throws \ImagickException
1121 public static function isSupportedByContactUrl($url, $update = null)
1123 return !empty(self::personByHandle($url, $update));
1127 * Check if posting is allowed for this contact
1129 * @param array $importer Array of the importer user
1130 * @param array $contact The contact that is checked
1131 * @param bool $is_comment Is the check for a comment?
1133 * @return bool is the contact allowed to post?
1135 private static function postAllow(array $importer, array $contact, $is_comment = false)
1138 * Perhaps we were already sharing with this person. Now they're sharing with us.
1139 * That makes us friends.
1140 * Normally this should have handled by getting a request - but this could get lost
1142 // It is deactivated by now, due to side effects. See issue https://github.com/friendica/friendica/pull/4033
1143 // It is not removed by now. Possibly the code is needed?
1144 //if (!$is_comment && $contact["rel"] == Contact::FOLLOWER && in_array($importer["page-flags"], array(User::PAGE_FLAGS_FREELOVE))) {
1147 // array('rel' => Contact::FRIEND, 'writable' => true),
1148 // array('id' => $contact["id"], 'uid' => $contact["uid"])
1151 // $contact["rel"] = Contact::FRIEND;
1152 // Logger::log("defining user ".$contact["nick"]." as friend");
1155 // Contact server is blocked
1156 if (Network::isUrlBlocked($contact['url'])) {
1158 // We don't seem to like that person
1159 } elseif ($contact["blocked"]) {
1160 // Maybe blocked, don't accept.
1162 // We are following this person?
1163 } elseif (($contact["rel"] == Contact::SHARING) || ($contact["rel"] == Contact::FRIEND)) {
1164 // Yes, then it is fine.
1166 // Is it a post to a community?
1167 } elseif (($contact["rel"] == Contact::FOLLOWER) && in_array($importer["page-flags"], [User::PAGE_FLAGS_COMMUNITY, User::PAGE_FLAGS_PRVGROUP])) {
1170 // Is the message a global user or a comment?
1171 } elseif (($importer["uid"] == 0) || $is_comment) {
1172 // Messages for the global users and comments are always accepted
1180 * Fetches the contact id for a handle and checks if posting is allowed
1182 * @param array $importer Array of the importer user
1183 * @param string $handle The checked handle in the format user@domain.tld
1184 * @param bool $is_comment Is the check for a comment?
1186 * @return array The contact data
1187 * @throws \Exception
1189 private static function allowedContactByHandle(array $importer, $handle, $is_comment = false)
1191 $contact = self::contactByHandle($importer["uid"], $handle);
1193 Logger::log("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
1194 // If a contact isn't found, we accept it anyway if it is a comment
1195 if ($is_comment && ($importer["uid"] != 0)) {
1196 return self::contactByHandle(0, $handle);
1197 } elseif ($is_comment) {
1204 if (!self::postAllow($importer, $contact, $is_comment)) {
1205 Logger::log("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
1212 * Does the message already exists on the system?
1214 * @param int $uid The user id
1215 * @param string $guid The guid of the message
1217 * @return int|bool message id if the message already was stored into the system - or false.
1218 * @throws \Exception
1220 private static function messageExists($uid, $guid)
1222 $item = Item::selectFirst(['id'], ['uid' => $uid, 'guid' => $guid]);
1223 if (DBA::isResult($item)) {
1224 Logger::log("message ".$guid." already exists for user ".$uid);
1232 * Checks for links to posts in a message
1234 * @param array $item The item array
1237 private static function fetchGuid(array $item)
1239 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1240 preg_replace_callback(
1242 function ($match) use ($item) {
1243 self::fetchGuidSub($match, $item);
1248 preg_replace_callback(
1249 "&\[url=/?posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1250 function ($match) use ($item) {
1251 self::fetchGuidSub($match, $item);
1258 * Checks for relative /people/* links in an item body to match local
1259 * contacts or prepends the remote host taken from the author link.
1261 * @param string $body The item body to replace links from
1262 * @param string $author_link The author link for missing local contact fallback
1264 * @return string the replaced string
1266 public static function replacePeopleGuid($body, $author_link)
1268 $return = preg_replace_callback(
1269 "&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
1270 function ($match) use ($author_link) {
1272 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
1273 // 1 => '0123456789abcdef'
1275 $handle = self::urlFromContactGuid($match[1]);
1278 $return = '@[url='.$handle.']'.$match[2].'[/url]';
1280 // No local match, restoring absolute remote URL from author scheme and host
1281 $author_url = parse_url($author_link);
1282 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
1294 * sub function of "fetchGuid" which checks for links in messages
1296 * @param array $match array containing a link that has to be checked for a message link
1297 * @param array $item The item array
1299 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1300 * @throws \ImagickException
1302 private static function fetchGuidSub($match, $item)
1304 if (!self::storeByGuid($match[1], $item["author-link"])) {
1305 self::storeByGuid($match[1], $item["owner-link"]);
1310 * Fetches an item with a given guid from a given server
1312 * @param string $guid the message guid
1313 * @param string $server The server address
1314 * @param int $uid The user id of the user
1316 * @return int the message id of the stored message or false
1317 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1318 * @throws \ImagickException
1320 private static function storeByGuid($guid, $server, $uid = 0)
1322 $serverparts = parse_url($server);
1324 if (empty($serverparts["host"]) || empty($serverparts["scheme"])) {
1328 $server = $serverparts["scheme"]."://".$serverparts["host"];
1330 Logger::log("Trying to fetch item ".$guid." from ".$server, Logger::DEBUG);
1332 $msg = self::message($guid, $server);
1338 Logger::log("Successfully fetched item ".$guid." from ".$server, Logger::DEBUG);
1340 // Now call the dispatcher
1341 return self::dispatchPublic($msg);
1345 * Fetches a message from a server
1347 * @param string $guid message guid
1348 * @param string $server The url of the server
1349 * @param int $level Endless loop prevention
1352 * 'message' => The message XML
1353 * 'author' => The author handle
1354 * 'key' => The public key of the author
1355 * @throws \Exception
1357 private static function message($guid, $server, $level = 0)
1363 // This will work for new Diaspora servers and Friendica servers from 3.5
1364 $source_url = $server."/fetch/post/".urlencode($guid);
1366 Logger::log("Fetch post from ".$source_url, Logger::DEBUG);
1368 $envelope = DI::httpRequest()->fetch($source_url);
1370 Logger::log("Envelope was fetched.", Logger::DEBUG);
1371 $x = self::verifyMagicEnvelope($envelope);
1373 Logger::log("Envelope could not be verified.", Logger::DEBUG);
1375 Logger::log("Envelope was verified.", Logger::DEBUG);
1385 $source_xml = XML::parseString($x);
1387 if (!is_object($source_xml)) {
1391 if ($source_xml->post->reshare) {
1392 // Reshare of a reshare - old Diaspora version
1393 Logger::log("Message is a reshare", Logger::DEBUG);
1394 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
1395 } elseif ($source_xml->getName() == "reshare") {
1396 // Reshare of a reshare - new Diaspora version
1397 Logger::log("Message is a new reshare", Logger::DEBUG);
1398 return self::message($source_xml->root_guid, $server, ++$level);
1403 // Fetch the author - for the old and the new Diaspora version
1404 if ($source_xml->post->status_message && $source_xml->post->status_message->diaspora_handle) {
1405 $author = (string)$source_xml->post->status_message->diaspora_handle;
1406 } elseif ($source_xml->author && ($source_xml->getName() == "status_message")) {
1407 $author = (string)$source_xml->author;
1410 // If this isn't a "status_message" then quit
1412 Logger::log("Message doesn't seem to be a status message", Logger::DEBUG);
1416 $msg = ["message" => $x, "author" => $author];
1418 $msg["key"] = self::key($msg["author"]);
1424 * Fetches an item with a given URL
1426 * @param string $url the message url
1428 * @return int the message id of the stored message or false
1429 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1430 * @throws \ImagickException
1432 public static function fetchByURL($url, $uid = 0)
1434 // Check for Diaspora (and Friendica) typical paths
1435 if (!preg_match("=(https?://.+)/(?:posts|display|objects)/([a-zA-Z0-9-_@.:%]+[a-zA-Z0-9])=i", $url, $matches)) {
1436 Logger::info('Invalid url', ['url' => $url]);
1440 $guid = urldecode($matches[2]);
1442 $item = Item::selectFirst(['id'], ['guid' => $guid, 'uid' => $uid]);
1443 if (DBA::isResult($item)) {
1444 Logger::info('Found', ['id' => $item['id']]);
1448 Logger::info('Fetch GUID from origin', ['guid' => $guid, 'server' => $matches[1]]);
1449 $ret = self::storeByGuid($guid, $matches[1], $uid);
1450 Logger::info('Result', ['ret' => $ret]);
1452 $item = Item::selectFirst(['id'], ['guid' => $guid, 'uid' => $uid]);
1453 if (DBA::isResult($item)) {
1454 Logger::info('Found', ['id' => $item['id']]);
1457 Logger::info('Not found', ['guid' => $guid, 'uid' => $uid]);
1463 * Fetches the item record of a given guid
1465 * @param int $uid The user id
1466 * @param string $guid message guid
1467 * @param string $author The handle of the item
1468 * @param array $contact The contact of the item owner
1470 * @return array the item record
1471 * @throws \Exception
1473 private static function parentItem($uid, $guid, $author, array $contact)
1475 $fields = ['id', 'parent', 'body', 'wall', 'uri', 'guid', 'private', 'origin',
1476 'author-name', 'author-link', 'author-avatar', 'gravity',
1477 'owner-name', 'owner-link', 'owner-avatar'];
1478 $condition = ['uid' => $uid, 'guid' => $guid];
1479 $item = Item::selectFirst($fields, $condition);
1481 if (!DBA::isResult($item)) {
1482 $person = self::personByHandle($author);
1483 $result = self::storeByGuid($guid, $person["url"], $uid);
1485 // We don't have an url for items that arrived at the public dispatcher
1486 if (!$result && !empty($contact["url"])) {
1487 $result = self::storeByGuid($guid, $contact["url"], $uid);
1491 Logger::log("Fetched missing item ".$guid." - result: ".$result, Logger::DEBUG);
1493 $item = Item::selectFirst($fields, $condition);
1497 if (!DBA::isResult($item)) {
1498 Logger::log("parent item not found: parent: ".$guid." - user: ".$uid);
1501 Logger::log("parent item found: parent: ".$guid." - user: ".$uid);
1507 * returns contact details
1509 * @param array $def_contact The default contact if the person isn't found
1510 * @param array $person The record of the person
1511 * @param int $uid The user id
1514 * 'cid' => contact id
1515 * 'network' => network type
1516 * @throws \Exception
1518 private static function authorContactByUrl($def_contact, $person, $uid)
1520 $condition = ['nurl' => Strings::normaliseLink($person["url"]), 'uid' => $uid];
1521 $contact = DBA::selectFirst('contact', ['id', 'network'], $condition);
1522 if (DBA::isResult($contact)) {
1523 $cid = $contact["id"];
1524 $network = $contact["network"];
1526 $cid = $def_contact["id"];
1527 $network = Protocol::DIASPORA;
1530 return ["cid" => $cid, "network" => $network];
1534 * Is the profile a hubzilla profile?
1536 * @param string $url The profile link
1538 * @return bool is it a hubzilla server?
1540 private static function isHubzilla($url)
1542 return(strstr($url, '/channel/'));
1546 * Generate a post link with a given handle and message guid
1548 * @param string $addr The user handle
1549 * @param string $guid message guid
1550 * @param string $parent_guid optional parent guid
1552 * @return string the post link
1553 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1554 * @throws \ImagickException
1556 private static function plink($addr, $guid, $parent_guid = '')
1558 $contact = Contact::getByURL($addr);
1559 if (empty($contact)) {
1560 Logger::info('No contact data for address', ['addr' => $addr]);
1564 if (empty($contact['baseurl'])) {
1565 $contact['baseurl'] = 'https://' . substr($addr, strpos($addr, '@') + 1);
1566 Logger::info('Create baseurl from address', ['baseurl' => $contact['baseurl'], 'url' => $contact['url']]);
1570 $gserver = DBA::selectFirst('gserver', ['platform'], ['nurl' => Strings::normaliseLink($contact['baseurl'])]);
1571 if (!empty($gserver['platform'])) {
1572 $platform = strtolower($gserver['platform']);
1573 Logger::info('Detected platform', ['platform' => $platform, 'url' => $contact['url']]);
1576 if (!in_array($platform, ['diaspora', 'friendica', 'hubzilla', 'socialhome'])) {
1577 if (self::isHubzilla($contact['url'])) {
1578 Logger::info('Detected unknown platform as Hubzilla', ['platform' => $platform, 'url' => $contact['url']]);
1579 $platform = 'hubzilla';
1580 } elseif ($contact['network'] == Protocol::DFRN) {
1581 Logger::info('Detected unknown platform as Friendica', ['platform' => $platform, 'url' => $contact['url']]);
1582 $platform = 'friendica';
1586 if ($platform == 'friendica') {
1587 return str_replace('/profile/' . $contact['nick'] . '/', '/display/' . $guid, $contact['url'] . '/');
1590 if ($platform == 'hubzilla') {
1591 return $contact['baseurl'] . '/item/' . $guid;
1594 if ($platform == 'socialhome') {
1595 return $contact['baseurl'] . '/content/' . $guid;
1598 if ($platform != 'diaspora') {
1599 Logger::info('Unknown platform', ['platform' => $platform, 'url' => $contact['url']]);
1603 if ($parent_guid != '') {
1604 return $contact['baseurl'] . '/posts/' . $parent_guid . '#' . $guid;
1606 return $contact['baseurl'] . '/posts/' . $guid;
1611 * Receives account migration
1613 * @param array $importer Array of the importer user
1614 * @param object $data The message object
1616 * @return bool Success
1617 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1618 * @throws \ImagickException
1620 private static function receiveAccountMigration(array $importer, $data)
1622 $old_handle = Strings::escapeTags(XML::unescape($data->author));
1623 $new_handle = Strings::escapeTags(XML::unescape($data->profile->author));
1624 $signature = Strings::escapeTags(XML::unescape($data->signature));
1626 $contact = self::contactByHandle($importer["uid"], $old_handle);
1628 Logger::log("cannot find contact for sender: ".$old_handle." and user ".$importer["uid"]);
1632 Logger::log("Got migration for ".$old_handle.", to ".$new_handle." with user ".$importer["uid"]);
1635 $signed_text = 'AccountMigration:'.$old_handle.':'.$new_handle;
1636 $key = self::key($old_handle);
1637 if (!Crypto::rsaVerify($signed_text, $signature, $key, "sha256")) {
1638 Logger::log('No valid signature for migration.');
1642 // Update the profile
1643 self::receiveProfile($importer, $data->profile);
1645 // change the technical stuff in contact
1646 $data = Probe::uri($new_handle);
1647 if ($data['network'] == Protocol::PHANTOM) {
1648 Logger::log('Account for '.$new_handle." couldn't be probed.");
1652 $fields = ['url' => $data['url'], 'nurl' => Strings::normaliseLink($data['url']),
1653 'name' => $data['name'], 'nick' => $data['nick'],
1654 'addr' => $data['addr'], 'batch' => $data['batch'],
1655 'notify' => $data['notify'], 'poll' => $data['poll'],
1656 'network' => $data['network']];
1658 DBA::update('contact', $fields, ['addr' => $old_handle]);
1660 Logger::log('Contacts are updated.');
1666 * Processes an account deletion
1668 * @param object $data The message object
1670 * @return bool Success
1671 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1673 private static function receiveAccountDeletion($data)
1675 $author = Strings::escapeTags(XML::unescape($data->author));
1677 $contacts = DBA::select('contact', ['id'], ['addr' => $author]);
1678 while ($contact = DBA::fetch($contacts)) {
1679 Contact::remove($contact["id"]);
1681 DBA::close($contacts);
1683 Logger::log('Removed contacts for ' . $author);
1689 * Fetch the uri from our database if we already have this item (maybe from ourselves)
1691 * @param string $author Author handle
1692 * @param string $guid Message guid
1693 * @param boolean $onlyfound Only return uri when found in the database
1695 * @return string The constructed uri or the one from our database
1696 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1697 * @throws \ImagickException
1699 private static function getUriFromGuid($author, $guid, $onlyfound = false)
1701 $item = Item::selectFirst(['uri'], ['guid' => $guid]);
1702 if (DBA::isResult($item)) {
1703 return $item["uri"];
1704 } elseif (!$onlyfound) {
1705 $person = self::personByHandle($author);
1707 $parts = parse_url($person['url']);
1708 unset($parts['path']);
1709 $host_url = Network::unparseURL($parts);
1711 return $host_url . '/objects/' . $guid;
1718 * Fetch the guid from our database with a given uri
1720 * @param string $uri Message uri
1721 * @param string $uid Author handle
1723 * @return string The post guid
1724 * @throws \Exception
1726 private static function getGuidFromUri($uri, $uid)
1728 $item = Item::selectFirst(['guid'], ['uri' => $uri, 'uid' => $uid]);
1729 if (DBA::isResult($item)) {
1730 return $item["guid"];
1737 * Find the best importer for a comment, like, ...
1739 * @param string $guid The guid of the item
1741 * @return array|boolean the origin owner of that post - or false
1742 * @throws \Exception
1744 private static function importerForGuid($guid)
1746 $item = Item::selectFirst(['uid'], ['origin' => true, 'guid' => $guid]);
1747 if (DBA::isResult($item)) {
1748 Logger::log("Found user ".$item['uid']." as owner of item ".$guid, Logger::DEBUG);
1749 $contact = DBA::selectFirst('contact', [], ['self' => true, 'uid' => $item['uid']]);
1750 if (DBA::isResult($contact)) {
1758 * Store the mentions in the tag table
1760 * @param integer $uriid
1761 * @param string $text
1763 private static function storeMentions(int $uriid, string $text)
1765 preg_match_all('/([@!]){(?:([^}]+?); ?)?([^} ]+)}/', $text, $matches, PREG_SET_ORDER);
1766 if (empty($matches)) {
1771 * Matching values for the preg match
1772 * [1] = mention type (@ or !)
1773 * [2] = name (optional)
1777 foreach ($matches as $match) {
1778 if (empty($match)) {
1782 $person = self::personByHandle($match[3]);
1783 if (empty($person)) {
1787 Tag::storeByHash($uriid, $match[1], $person['name'] ?: $person['nick'], $person['url']);
1792 * Processes an incoming comment
1794 * @param array $importer Array of the importer user
1795 * @param string $sender The sender of the message
1796 * @param object $data The message object
1797 * @param string $xml The original XML of the message
1799 * @return int The message id of the generated comment or "false" if there was an error
1800 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1801 * @throws \ImagickException
1803 private static function receiveComment(array $importer, $sender, $data, $xml)
1805 $author = Strings::escapeTags(XML::unescape($data->author));
1806 $guid = Strings::escapeTags(XML::unescape($data->guid));
1807 $parent_guid = Strings::escapeTags(XML::unescape($data->parent_guid));
1808 $text = XML::unescape($data->text);
1810 if (isset($data->created_at)) {
1811 $created_at = DateTimeFormat::utc(Strings::escapeTags(XML::unescape($data->created_at)));
1813 $created_at = DateTimeFormat::utcNow();
1816 if (isset($data->thread_parent_guid)) {
1817 $thread_parent_guid = Strings::escapeTags(XML::unescape($data->thread_parent_guid));
1818 $thr_uri = self::getUriFromGuid("", $thread_parent_guid, true);
1823 $contact = self::allowedContactByHandle($importer, $sender, true);
1828 $message_id = self::messageExists($importer["uid"], $guid);
1833 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
1834 if (!$parent_item) {
1838 $person = self::personByHandle($author);
1839 if (!is_array($person)) {
1840 Logger::log("unable to find author details");
1844 // Fetch the contact id - if we know this contact
1845 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
1849 $datarray["uid"] = $importer["uid"];
1850 $datarray["contact-id"] = $author_contact["cid"];
1851 $datarray["network"] = $author_contact["network"];
1853 $datarray["author-link"] = $person["url"];
1854 $datarray["author-id"] = Contact::getIdForURL($person["url"], 0);
1856 $datarray["owner-link"] = $contact["url"];
1857 $datarray["owner-id"] = Contact::getIdForURL($contact["url"], 0);
1859 $datarray["guid"] = $guid;
1860 $datarray["uri"] = self::getUriFromGuid($author, $guid);
1861 $datarray['uri-id'] = ItemURI::insert(['uri' => $datarray['uri'], 'guid' => $datarray['guid']]);
1863 $datarray["verb"] = Activity::POST;
1864 $datarray["gravity"] = GRAVITY_COMMENT;
1866 if ($thr_uri != "") {
1867 $datarray["parent-uri"] = $thr_uri;
1869 $datarray["parent-uri"] = $parent_item["uri"];
1872 $datarray["object-type"] = Activity\ObjectType::COMMENT;
1874 $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
1875 $datarray["source"] = $xml;
1877 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1879 $datarray["plink"] = self::plink($author, $guid, $parent_item['guid']);
1880 $body = Markdown::toBBCode($text);
1882 $datarray["body"] = self::replacePeopleGuid($body, $person["url"]);
1884 self::storeMentions($datarray['uri-id'], $text);
1885 Tag::storeRawTagsFromBody($datarray['uri-id'], $datarray["body"]);
1887 self::fetchGuid($datarray);
1889 // If we are the origin of the parent we store the original data.
1890 // We notify our followers during the item storage.
1891 if ($parent_item["origin"]) {
1892 $datarray['diaspora_signed_text'] = json_encode($data);
1895 $message_id = Item::insert($datarray);
1897 if ($message_id <= 0) {
1902 Logger::log("Stored comment ".$datarray["guid"]." with message id ".$message_id, Logger::DEBUG);
1903 if ($datarray['uid'] == 0) {
1904 Item::distribute($message_id, json_encode($data));
1912 * processes and stores private messages
1914 * @param array $importer Array of the importer user
1915 * @param array $contact The contact of the message
1916 * @param object $data The message object
1917 * @param array $msg Array of the processed message, author handle and key
1918 * @param object $mesg The private message
1919 * @param array $conversation The conversation record to which this message belongs
1921 * @return bool "true" if it was successful
1922 * @throws \Exception
1924 private static function receiveConversationMessage(array $importer, array $contact, $data, $msg, $mesg, $conversation)
1926 $author = Strings::escapeTags(XML::unescape($data->author));
1927 $guid = Strings::escapeTags(XML::unescape($data->guid));
1928 $subject = Strings::escapeTags(XML::unescape($data->subject));
1930 // "diaspora_handle" is the element name from the old version
1931 // "author" is the element name from the new version
1932 if ($mesg->author) {
1933 $msg_author = Strings::escapeTags(XML::unescape($mesg->author));
1934 } elseif ($mesg->diaspora_handle) {
1935 $msg_author = Strings::escapeTags(XML::unescape($mesg->diaspora_handle));
1940 $msg_guid = Strings::escapeTags(XML::unescape($mesg->guid));
1941 $msg_conversation_guid = Strings::escapeTags(XML::unescape($mesg->conversation_guid));
1942 $msg_text = XML::unescape($mesg->text);
1943 $msg_created_at = DateTimeFormat::utc(Strings::escapeTags(XML::unescape($mesg->created_at)));
1945 if ($msg_conversation_guid != $guid) {
1946 Logger::log("message conversation guid does not belong to the current conversation.");
1950 $body = Markdown::toBBCode($msg_text);
1951 $message_uri = $msg_author.":".$msg_guid;
1953 $person = self::personByHandle($msg_author);
1955 return Mail::insert([
1956 'uid' => $importer['uid'],
1957 'guid' => $msg_guid,
1958 'convid' => $conversation['id'],
1959 'from-name' => $person['name'],
1960 'from-photo' => $person['photo'],
1961 'from-url' => $person['url'],
1962 'contact-id' => $contact['id'],
1963 'title' => $subject,
1965 'uri' => $message_uri,
1966 'parent-uri' => $author . ':' . $guid,
1967 'created' => $msg_created_at
1972 * Processes new private messages (answers to private messages are processed elsewhere)
1974 * @param array $importer Array of the importer user
1975 * @param array $msg Array of the processed message, author handle and key
1976 * @param object $data The message object
1978 * @return bool Success
1979 * @throws \Exception
1981 private static function receiveConversation(array $importer, $msg, $data)
1983 $author = Strings::escapeTags(XML::unescape($data->author));
1984 $guid = Strings::escapeTags(XML::unescape($data->guid));
1985 $subject = Strings::escapeTags(XML::unescape($data->subject));
1986 $created_at = DateTimeFormat::utc(Strings::escapeTags(XML::unescape($data->created_at)));
1987 $participants = Strings::escapeTags(XML::unescape($data->participants));
1989 $messages = $data->message;
1991 if (!count($messages)) {
1992 Logger::log("empty conversation");
1996 $contact = self::allowedContactByHandle($importer, $msg["author"], true);
2001 $conversation = DBA::selectFirst('conv', [], ['uid' => $importer["uid"], 'guid' => $guid]);
2002 if (!DBA::isResult($conversation)) {
2004 "INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
2005 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
2006 intval($importer["uid"]),
2008 DBA::escape($author),
2009 DBA::escape($created_at),
2010 DBA::escape(DateTimeFormat::utcNow()),
2011 DBA::escape($subject),
2012 DBA::escape($participants)
2015 $conversation = DBA::selectFirst('conv', [], ['uid' => $importer["uid"], 'guid' => $guid]);
2018 if (!$conversation) {
2019 Logger::log("unable to create conversation.");
2023 foreach ($messages as $mesg) {
2024 self::receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation);
2031 * Processes "like" messages
2033 * @param array $importer Array of the importer user
2034 * @param string $sender The sender of the message
2035 * @param object $data The message object
2037 * @return int The message id of the generated like or "false" if there was an error
2038 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2039 * @throws \ImagickException
2041 private static function receiveLike(array $importer, $sender, $data)
2043 $author = Strings::escapeTags(XML::unescape($data->author));
2044 $guid = Strings::escapeTags(XML::unescape($data->guid));
2045 $parent_guid = Strings::escapeTags(XML::unescape($data->parent_guid));
2046 $parent_type = Strings::escapeTags(XML::unescape($data->parent_type));
2047 $positive = Strings::escapeTags(XML::unescape($data->positive));
2049 // likes on comments aren't supported by Diaspora - only on posts
2050 // But maybe this will be supported in the future, so we will accept it.
2051 if (!in_array($parent_type, ["Post", "Comment"])) {
2055 $contact = self::allowedContactByHandle($importer, $sender, true);
2060 $message_id = self::messageExists($importer["uid"], $guid);
2065 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
2066 if (!$parent_item) {
2070 $person = self::personByHandle($author);
2071 if (!is_array($person)) {
2072 Logger::log("unable to find author details");
2076 // Fetch the contact id - if we know this contact
2077 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
2079 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
2080 // We would accept this anyhow.
2081 if ($positive == "true") {
2082 $verb = Activity::LIKE;
2084 $verb = Activity::DISLIKE;
2089 $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
2091 $datarray["uid"] = $importer["uid"];
2092 $datarray["contact-id"] = $author_contact["cid"];
2093 $datarray["network"] = $author_contact["network"];
2095 $datarray["owner-link"] = $datarray["author-link"] = $person["url"];
2096 $datarray["owner-id"] = $datarray["author-id"] = Contact::getIdForURL($person["url"], 0);
2098 $datarray["guid"] = $guid;
2099 $datarray["uri"] = self::getUriFromGuid($author, $guid);
2101 $datarray["verb"] = $verb;
2102 $datarray["gravity"] = GRAVITY_ACTIVITY;
2103 $datarray["parent-uri"] = $parent_item["uri"];
2105 $datarray["object-type"] = Activity\ObjectType::NOTE;
2107 $datarray["body"] = $verb;
2109 // Diaspora doesn't provide a date for likes
2110 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = DateTimeFormat::utcNow();
2112 // like on comments have the comment as parent. So we need to fetch the toplevel parent
2113 if ($parent_item['gravity'] != GRAVITY_PARENT) {
2114 $toplevel = Item::selectFirst(['origin'], ['id' => $parent_item['parent']]);
2115 $origin = $toplevel["origin"];
2117 $origin = $parent_item["origin"];
2120 // If we are the origin of the parent we store the original data.
2121 // We notify our followers during the item storage.
2123 $datarray['diaspora_signed_text'] = json_encode($data);
2126 $message_id = Item::insert($datarray);
2128 if ($message_id <= 0) {
2133 Logger::log("Stored like ".$datarray["guid"]." with message id ".$message_id, Logger::DEBUG);
2134 if ($datarray['uid'] == 0) {
2135 Item::distribute($message_id, json_encode($data));
2143 * Processes private messages
2145 * @param array $importer Array of the importer user
2146 * @param object $data The message object
2148 * @return bool Success?
2149 * @throws \Exception
2151 private static function receiveMessage(array $importer, $data)
2153 $author = Strings::escapeTags(XML::unescape($data->author));
2154 $guid = Strings::escapeTags(XML::unescape($data->guid));
2155 $conversation_guid = Strings::escapeTags(XML::unescape($data->conversation_guid));
2156 $text = XML::unescape($data->text);
2157 $created_at = DateTimeFormat::utc(Strings::escapeTags(XML::unescape($data->created_at)));
2159 $contact = self::allowedContactByHandle($importer, $author, true);
2164 $conversation = null;
2166 $condition = ['uid' => $importer["uid"], 'guid' => $conversation_guid];
2167 $conversation = DBA::selectFirst('conv', [], $condition);
2169 if (!DBA::isResult($conversation)) {
2170 Logger::log("conversation not available.");
2174 $message_uri = $author.":".$guid;
2176 $person = self::personByHandle($author);
2178 Logger::log("unable to find author details");
2182 $body = Markdown::toBBCode($text);
2184 $body = self::replacePeopleGuid($body, $person["url"]);
2186 return Mail::insert([
2187 'uid' => $importer['uid'],
2189 'convid' => $conversation['id'],
2190 'from-name' => $person['name'],
2191 'from-photo' => $person['photo'],
2192 'from-url' => $person['url'],
2193 'contact-id' => $contact['id'],
2194 'title' => $conversation['subject'],
2197 'uri' => $message_uri,
2198 'parent-uri' => $author.":".$conversation['guid'],
2199 'created' => $created_at
2204 * Processes participations - unsupported by now
2206 * @param array $importer Array of the importer user
2207 * @param object $data The message object
2209 * @return bool success
2210 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2211 * @throws \ImagickException
2213 private static function receiveParticipation(array $importer, $data)
2215 $author = strtolower(Strings::escapeTags(XML::unescape($data->author)));
2216 $guid = Strings::escapeTags(XML::unescape($data->guid));
2217 $parent_guid = Strings::escapeTags(XML::unescape($data->parent_guid));
2219 $contact = self::allowedContactByHandle($importer, $author, true);
2224 if (self::messageExists($importer["uid"], $guid)) {
2228 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
2229 if (!$parent_item) {
2233 if (!$parent_item['origin']) {
2234 Logger::info('Not our origin. Participation is ignored', ['parent_guid' => $parent_guid, 'guid' => $guid, 'author' => $author]);
2237 if (!in_array($parent_item['private'], [Item::PUBLIC, Item::UNLISTED])) {
2238 Logger::info('Item is not public, participation is ignored', ['parent_guid' => $parent_guid, 'guid' => $guid, 'author' => $author]);
2242 $person = self::personByHandle($author);
2243 if (!is_array($person)) {
2244 Logger::log("Person not found: ".$author);
2248 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
2250 // Store participation
2253 $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
2255 $datarray["uid"] = $importer["uid"];
2256 $datarray["contact-id"] = $author_contact["cid"];
2257 $datarray["network"] = $author_contact["network"];
2259 $datarray["owner-link"] = $datarray["author-link"] = $person["url"];
2260 $datarray["owner-id"] = $datarray["author-id"] = Contact::getIdForURL($person["url"], 0);
2262 $datarray["guid"] = $guid;
2263 $datarray["uri"] = self::getUriFromGuid($author, $guid);
2265 $datarray["verb"] = Activity::FOLLOW;
2266 $datarray["gravity"] = GRAVITY_ACTIVITY;
2267 $datarray["parent-uri"] = $parent_item["uri"];
2269 $datarray["object-type"] = Activity\ObjectType::NOTE;
2271 $datarray["body"] = Activity::FOLLOW;
2273 // Diaspora doesn't provide a date for a participation
2274 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = DateTimeFormat::utcNow();
2276 $message_id = Item::insert($datarray);
2278 Logger::info('Participation stored', ['id' => $message_id, 'guid' => $guid, 'parent_guid' => $parent_guid, 'author' => $author]);
2280 // Send all existing comments and likes to the requesting server
2281 $comments = Item::select(['id', 'uri-id', 'parent-author-network', 'author-network', 'verb'],
2282 ['parent' => $parent_item['id'], 'gravity' => [GRAVITY_COMMENT, GRAVITY_ACTIVITY]]);
2283 while ($comment = Item::fetch($comments)) {
2284 if (in_array($comment['verb'], [Activity::FOLLOW, Activity::TAG])) {
2285 Logger::info('participation messages are not relayed', ['item' => $comment['id']]);
2289 if ($comment['author-network'] == Protocol::ACTIVITYPUB) {
2290 Logger::info('Comments from ActivityPub authors are not relayed', ['item' => $comment['id']]);
2294 if ($comment['parent-author-network'] == Protocol::ACTIVITYPUB) {
2295 Logger::info('Comments to comments from ActivityPub authors are not relayed', ['item' => $comment['id']]);
2299 Logger::info('Deliver participation', ['item' => $comment['id'], 'contact' => $author_contact["cid"]]);
2300 if (Worker::add(PRIORITY_HIGH, 'Delivery', Delivery::POST, $comment['id'], $author_contact["cid"])) {
2301 Post\DeliveryData::incrementQueueCount($comment['uri-id'], 1);
2304 DBA::close($comments);
2310 * Processes photos - unneeded
2312 * @param array $importer Array of the importer user
2313 * @param object $data The message object
2315 * @return bool always true
2317 private static function receivePhoto(array $importer, $data)
2319 // There doesn't seem to be a reason for this function,
2320 // since the photo data is transmitted in the status message as well
2325 * Processes poll participations - unssupported
2327 * @param array $importer Array of the importer user
2328 * @param object $data The message object
2330 * @return bool always true
2332 private static function receivePollParticipation(array $importer, $data)
2334 // We don't support polls by now
2339 * Processes incoming profile updates
2341 * @param array $importer Array of the importer user
2342 * @param object $data The message object
2344 * @return bool Success
2345 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2346 * @throws \ImagickException
2348 private static function receiveProfile(array $importer, $data)
2350 $author = strtolower(Strings::escapeTags(XML::unescape($data->author)));
2352 $contact = self::contactByHandle($importer["uid"], $author);
2357 $name = XML::unescape($data->first_name).((strlen($data->last_name)) ? " ".XML::unescape($data->last_name) : "");
2358 $image_url = XML::unescape($data->image_url);
2359 $birthday = XML::unescape($data->birthday);
2360 $about = Markdown::toBBCode(XML::unescape($data->bio));
2361 $location = Markdown::toBBCode(XML::unescape($data->location));
2362 $searchable = (XML::unescape($data->searchable) == "true");
2363 $nsfw = (XML::unescape($data->nsfw) == "true");
2364 $tags = XML::unescape($data->tag_string);
2366 $tags = explode("#", $tags);
2369 foreach ($tags as $tag) {
2370 $tag = trim(strtolower($tag));
2376 $keywords = implode(", ", $keywords);
2378 $handle_parts = explode("@", $author);
2379 $nick = $handle_parts[0];
2382 $name = $handle_parts[0];
2385 if (preg_match("|^https?://|", $image_url) === 0) {
2386 $image_url = "http://".$handle_parts[1].$image_url;
2389 Contact::updateAvatar($contact["id"], $image_url);
2391 // Generic birthday. We don't know the timezone. The year is irrelevant.
2393 $birthday = str_replace("1000", "1901", $birthday);
2395 if ($birthday != "") {
2396 $birthday = DateTimeFormat::utc($birthday, "Y-m-d");
2399 // this is to prevent multiple birthday notifications in a single year
2400 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2402 if (substr($birthday, 5) === substr($contact["bd"], 5)) {
2403 $birthday = $contact["bd"];
2406 $fields = ['name' => $name, 'location' => $location,
2407 'name-date' => DateTimeFormat::utcNow(), 'about' => $about,
2408 'addr' => $author, 'nick' => $nick, 'keywords' => $keywords,
2409 'unsearchable' => !$searchable, 'sensitive' => $nsfw];
2411 if (!empty($birthday)) {
2412 $fields['bd'] = $birthday;
2415 DBA::update('contact', $fields, ['id' => $contact['id']]);
2417 Logger::log("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], Logger::DEBUG);
2423 * Processes incoming friend requests
2425 * @param array $importer Array of the importer user
2426 * @param array $contact The contact that send the request
2428 * @throws \Exception
2430 private static function receiveRequestMakeFriend(array $importer, array $contact)
2432 if ($contact["rel"] == Contact::SHARING) {
2435 ['rel' => Contact::FRIEND, 'writable' => true],
2436 ['id' => $contact["id"], 'uid' => $importer["uid"]]
2442 * Processes incoming sharing notification
2444 * @param array $importer Array of the importer user
2445 * @param object $data The message object
2447 * @return bool Success
2448 * @throws \Exception
2450 private static function receiveContactRequest(array $importer, $data)
2452 $author = XML::unescape($data->author);
2453 $recipient = XML::unescape($data->recipient);
2455 if (!$author || !$recipient) {
2459 // the current protocol version doesn't know these fields
2460 // That means that we will assume their existance
2461 if (isset($data->following)) {
2462 $following = (XML::unescape($data->following) == "true");
2467 if (isset($data->sharing)) {
2468 $sharing = (XML::unescape($data->sharing) == "true");
2473 $contact = self::contactByHandle($importer["uid"], $author);
2475 // perhaps we were already sharing with this person. Now they're sharing with us.
2476 // That makes us friends.
2479 Logger::log("Author ".$author." (Contact ".$contact["id"].") wants to follow us.", Logger::DEBUG);
2480 self::receiveRequestMakeFriend($importer, $contact);
2482 // refetch the contact array
2483 $contact = self::contactByHandle($importer["uid"], $author);
2485 // If we are now friends, we are sending a share message.
2486 // Normally we needn't to do so, but the first message could have been vanished.
2487 if (in_array($contact["rel"], [Contact::FRIEND])) {
2488 $user = DBA::selectFirst('user', [], ['uid' => $importer["uid"]]);
2489 if (DBA::isResult($user)) {
2490 Logger::log("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], Logger::DEBUG);
2491 self::sendShare($user, $contact);
2496 Logger::log("Author ".$author." doesn't want to follow us anymore.", Logger::DEBUG);
2497 Contact::removeFollower($importer, $contact);
2502 if (!$following && $sharing && in_array($importer["page-flags"], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_NORMAL])) {
2503 Logger::log("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", Logger::DEBUG);
2505 } elseif (!$following && !$sharing) {
2506 Logger::log("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", Logger::DEBUG);
2508 } elseif (!$following && $sharing) {
2509 Logger::log("Author ".$author." wants to share with us.", Logger::DEBUG);
2510 } elseif ($following && $sharing) {
2511 Logger::log("Author ".$author." wants to have a bidirectional conection.", Logger::DEBUG);
2512 } elseif ($following && !$sharing) {
2513 Logger::log("Author ".$author." wants to listen to us.", Logger::DEBUG);
2516 $ret = self::personByHandle($author);
2518 if (!$ret || ($ret["network"] != Protocol::DIASPORA)) {
2519 Logger::log("Cannot resolve diaspora handle ".$author." for ".$recipient);
2523 $cid = Contact::getIdForURL($ret['url'], $importer['uid']);
2525 $contact = DBA::selectFirst('contact', [], ['id' => $cid, 'network' => Protocol::NATIVE_SUPPORT]);
2530 $item = ['author-id' => Contact::getIdForURL($ret['url']),
2531 'author-link' => $ret['url']];
2533 $result = Contact::addRelationship($importer, $contact, $item, false);
2534 if ($result === true) {
2535 $contact_record = self::contactByHandle($importer['uid'], $author);
2536 if (!$contact_record) {
2537 Logger::info('unable to locate newly created contact record.');
2541 $user = DBA::selectFirst('user', [], ['uid' => $importer['uid']]);
2542 if (DBA::isResult($user)) {
2543 self::sendShare($user, $contact_record);
2545 // Send the profile data, maybe it weren't transmitted before
2546 self::sendProfile($importer['uid'], [$contact_record]);
2554 * Fetches a message with a given guid
2556 * @param string $guid message guid
2557 * @param string $orig_author handle of the original post
2558 * @return array The fetched item
2559 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2560 * @throws \ImagickException
2562 public static function originalItem($guid, $orig_author)
2565 Logger::log('Empty guid. Quitting.');
2569 // Do we already have this item?
2570 $fields = ['body', 'title', 'attach', 'app', 'created', 'object-type', 'uri', 'guid',
2571 'author-name', 'author-link', 'author-avatar', 'plink'];
2572 $condition = ['guid' => $guid, 'visible' => true, 'deleted' => false, 'private' => [Item::PUBLIC, Item::UNLISTED]];
2573 $item = Item::selectFirst($fields, $condition);
2575 if (DBA::isResult($item)) {
2576 Logger::log("reshared message ".$guid." already exists on system.");
2578 // Maybe it is already a reshared item?
2579 // Then refetch the content, if it is a reshare from a reshare.
2580 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2581 if (self::isReshare($item["body"], true)) {
2583 } elseif (self::isReshare($item["body"], false) || strstr($item["body"], "[share")) {
2584 $item["body"] = Markdown::toBBCode(BBCode::toMarkdown($item["body"]));
2586 $item["body"] = self::replacePeopleGuid($item["body"], $item["author-link"]);
2588 // Add OEmbed and other information to the body
2589 $item["body"] = PageInfo::searchAndAppendToBody($item["body"], false, true);
2597 if (!DBA::isResult($item)) {
2598 if (empty($orig_author)) {
2599 Logger::log('Empty author for guid ' . $guid . '. Quitting.');
2603 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2604 Logger::log("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2605 $stored = self::storeByGuid($guid, $server);
2608 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2609 Logger::log("2nd try: reshared message ".$guid." will be fetched without SSL from the server ".$server);
2610 $stored = self::storeByGuid($guid, $server);
2614 $fields = ['body', 'title', 'attach', 'app', 'created', 'object-type', 'uri', 'guid',
2615 'author-name', 'author-link', 'author-avatar', 'plink'];
2616 $condition = ['guid' => $guid, 'visible' => true, 'deleted' => false, 'private' => [Item::PUBLIC, Item::UNLISTED]];
2617 $item = Item::selectFirst($fields, $condition);
2619 if (DBA::isResult($item)) {
2620 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2621 if (self::isReshare($item["body"], false)) {
2622 $item["body"] = Markdown::toBBCode(BBCode::toMarkdown($item["body"]));
2623 $item["body"] = self::replacePeopleGuid($item["body"], $item["author-link"]);
2634 * Stores a reshare activity
2636 * @param array $item Array of reshare post
2637 * @param integer $parent_message_id Id of the parent post
2638 * @param string $guid GUID string of reshare action
2639 * @param string $author Author handle
2641 private static function addReshareActivity($item, $parent_message_id, $guid, $author)
2643 $parent = Item::selectFirst(['uri', 'guid'], ['id' => $parent_message_id]);
2647 $datarray['uid'] = $item['uid'];
2648 $datarray['contact-id'] = $item['contact-id'];
2649 $datarray['network'] = $item['network'];
2651 $datarray['author-link'] = $item['author-link'];
2652 $datarray['author-id'] = $item['author-id'];
2654 $datarray['owner-link'] = $datarray['author-link'];
2655 $datarray['owner-id'] = $datarray['author-id'];
2657 $datarray['guid'] = $parent['guid'] . '-' . $guid;
2658 $datarray['uri'] = self::getUriFromGuid($author, $datarray['guid']);
2659 $datarray['parent-uri'] = $parent['uri'];
2661 $datarray['verb'] = $datarray['body'] = Activity::ANNOUNCE;
2662 $datarray['gravity'] = GRAVITY_ACTIVITY;
2663 $datarray['object-type'] = Activity\ObjectType::NOTE;
2665 $datarray['protocol'] = $item['protocol'];
2667 $datarray['plink'] = self::plink($author, $datarray['guid']);
2668 $datarray['private'] = $item['private'];
2669 $datarray['changed'] = $datarray['created'] = $datarray['edited'] = $item['created'];
2671 $message_id = Item::insert($datarray);
2674 Logger::info('Stored reshare activity.', ['guid' => $guid, 'id' => $message_id]);
2675 if ($datarray['uid'] == 0) {
2676 Item::distribute($message_id);
2682 * Processes a reshare message
2684 * @param array $importer Array of the importer user
2685 * @param object $data The message object
2686 * @param string $xml The original XML of the message
2688 * @return int the message id
2689 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2690 * @throws \ImagickException
2692 private static function receiveReshare(array $importer, $data, $xml)
2694 $author = Strings::escapeTags(XML::unescape($data->author));
2695 $guid = Strings::escapeTags(XML::unescape($data->guid));
2696 $created_at = DateTimeFormat::utc(Strings::escapeTags(XML::unescape($data->created_at)));
2697 $root_author = Strings::escapeTags(XML::unescape($data->root_author));
2698 $root_guid = Strings::escapeTags(XML::unescape($data->root_guid));
2699 /// @todo handle unprocessed property "provider_display_name"
2700 $public = Strings::escapeTags(XML::unescape($data->public));
2702 $contact = self::allowedContactByHandle($importer, $author, false);
2707 $message_id = self::messageExists($importer["uid"], $guid);
2712 $original_item = self::originalItem($root_guid, $root_author);
2713 if (!$original_item) {
2719 $datarray["uid"] = $importer["uid"];
2720 $datarray["contact-id"] = $contact["id"];
2721 $datarray["network"] = Protocol::DIASPORA;
2723 $datarray["author-link"] = $contact["url"];
2724 $datarray["author-id"] = Contact::getIdForURL($contact["url"], 0);
2726 $datarray["owner-link"] = $datarray["author-link"];
2727 $datarray["owner-id"] = $datarray["author-id"];
2729 $datarray["guid"] = $guid;
2730 $datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
2731 $datarray['uri-id'] = ItemURI::insert(['uri' => $datarray['uri'], 'guid' => $datarray['guid']]);
2733 $datarray["verb"] = Activity::POST;
2734 $datarray["gravity"] = GRAVITY_PARENT;
2736 $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
2737 $datarray["source"] = $xml;
2739 /// @todo Copy tag data from original post
2741 $prefix = BBCode::getShareOpeningTag(
2742 $original_item["author-name"],
2743 $original_item["author-link"],
2744 $original_item["author-avatar"],
2745 $original_item["plink"],
2746 $original_item["created"],
2747 $original_item["guid"]
2750 if (!empty($original_item['title'])) {
2751 $prefix .= '[h3]' . $original_item['title'] . "[/h3]\n";
2754 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2756 Tag::storeFromBody($datarray['uri-id'], $datarray["body"]);
2758 $datarray["attach"] = $original_item["attach"];
2759 $datarray["app"] = $original_item["app"];
2761 $datarray["plink"] = self::plink($author, $guid);
2762 $datarray["private"] = (($public == "false") ? Item::PRIVATE : Item::PUBLIC);
2763 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2765 $datarray["object-type"] = $original_item["object-type"];
2767 self::fetchGuid($datarray);
2768 $message_id = Item::insert($datarray);
2770 self::sendParticipation($contact, $datarray);
2772 $root_message_id = self::messageExists($importer["uid"], $root_guid);
2773 if ($root_message_id) {
2774 self::addReshareActivity($datarray, $root_message_id, $guid, $author);
2778 Logger::log("Stored reshare ".$datarray["guid"]." with message id ".$message_id, Logger::DEBUG);
2779 if ($datarray['uid'] == 0) {
2780 Item::distribute($message_id);
2789 * Processes retractions
2791 * @param array $importer Array of the importer user
2792 * @param array $contact The contact of the item owner
2793 * @param object $data The message object
2795 * @return bool success
2796 * @throws \Exception
2798 private static function itemRetraction(array $importer, array $contact, $data)
2800 $author = Strings::escapeTags(XML::unescape($data->author));
2801 $target_guid = Strings::escapeTags(XML::unescape($data->target_guid));
2802 $target_type = Strings::escapeTags(XML::unescape($data->target_type));
2804 $person = self::personByHandle($author);
2805 if (!is_array($person)) {
2806 Logger::log("unable to find author detail for ".$author);
2810 if (empty($contact["url"])) {
2811 $contact["url"] = $person["url"];
2814 // Fetch items that are about to be deleted
2815 $fields = ['uid', 'id', 'parent', 'parent-uri', 'author-link', 'file'];
2817 // When we receive a public retraction, we delete every item that we find.
2818 if ($importer['uid'] == 0) {
2819 $condition = ['guid' => $target_guid, 'deleted' => false];
2821 $condition = ['guid' => $target_guid, 'deleted' => false, 'uid' => $importer['uid']];
2824 $r = Item::select($fields, $condition);
2825 if (!DBA::isResult($r)) {
2826 Logger::log("Target guid ".$target_guid." was not found on this system for user ".$importer['uid'].".");
2830 while ($item = Item::fetch($r)) {
2831 if (strstr($item['file'], '[')) {
2832 Logger::log("Target guid " . $target_guid . " for user " . $item['uid'] . " is filed. So it won't be deleted.", Logger::DEBUG);
2836 // Fetch the parent item
2837 $parent = Item::selectFirst(['author-link'], ['id' => $item['parent']]);
2839 // Only delete it if the parent author really fits
2840 if (!Strings::compareLink($parent["author-link"], $contact["url"]) && !Strings::compareLink($item["author-link"], $contact["url"])) {
2841 Logger::log("Thread author ".$parent["author-link"]." and item author ".$item["author-link"]." don't fit to expected contact ".$contact["url"], Logger::DEBUG);
2845 Item::markForDeletion(['id' => $item['id']]);
2847 Logger::log("Deleted target ".$target_guid." (".$item["id"].") from user ".$item["uid"]." parent: ".$item['parent'], Logger::DEBUG);
2854 * Receives retraction messages
2856 * @param array $importer Array of the importer user
2857 * @param string $sender The sender of the message
2858 * @param object $data The message object
2860 * @return bool Success
2861 * @throws \Exception
2863 private static function receiveRetraction(array $importer, $sender, $data)
2865 $target_type = Strings::escapeTags(XML::unescape($data->target_type));
2867 $contact = self::contactByHandle($importer["uid"], $sender);
2868 if (!$contact && (in_array($target_type, ["Contact", "Person"]))) {
2869 Logger::log("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2877 Logger::log("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], Logger::DEBUG);
2879 switch ($target_type) {
2884 case "StatusMessage":
2885 return self::itemRetraction($importer, $contact, $data);
2887 case "PollParticipation":
2889 // Currently unsupported
2893 Logger::log("Unknown target type ".$target_type);
2900 * Receives status messages
2902 * @param array $importer Array of the importer user
2903 * @param SimpleXMLElement $data The message object
2904 * @param string $xml The original XML of the message
2906 * @return int The message id of the newly created item
2907 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2908 * @throws \ImagickException
2910 private static function receiveStatusMessage(array $importer, SimpleXMLElement $data, $xml)
2912 $author = Strings::escapeTags(XML::unescape($data->author));
2913 $guid = Strings::escapeTags(XML::unescape($data->guid));
2914 $created_at = DateTimeFormat::utc(Strings::escapeTags(XML::unescape($data->created_at)));
2915 $public = Strings::escapeTags(XML::unescape($data->public));
2916 $text = XML::unescape($data->text);
2917 $provider_display_name = Strings::escapeTags(XML::unescape($data->provider_display_name));
2919 $contact = self::allowedContactByHandle($importer, $author, false);
2924 $message_id = self::messageExists($importer["uid"], $guid);
2930 if ($data->location) {
2931 foreach ($data->location->children() as $fieldname => $data) {
2932 $address[$fieldname] = Strings::escapeTags(XML::unescape($data));
2936 $body = Markdown::toBBCode($text);
2940 // Attach embedded pictures to the body
2942 foreach ($data->photo as $photo) {
2943 $body = "[img]".XML::unescape($photo->remote_photo_path).
2944 XML::unescape($photo->remote_photo_name)."[/img]\n".$body;
2947 $datarray["object-type"] = Activity\ObjectType::IMAGE;
2949 $datarray["object-type"] = Activity\ObjectType::NOTE;
2951 // Add OEmbed and other information to the body
2952 if (!self::isHubzilla($contact["url"])) {
2953 $body = PageInfo::searchAndAppendToBody($body, false, true);
2957 /// @todo enable support for polls
2958 //if ($data->poll) {
2959 // foreach ($data->poll AS $poll)
2964 /// @todo enable support for events
2966 $datarray["uid"] = $importer["uid"];
2967 $datarray["contact-id"] = $contact["id"];
2968 $datarray["network"] = Protocol::DIASPORA;
2970 $datarray["author-link"] = $contact["url"];
2971 $datarray["author-id"] = Contact::getIdForURL($contact["url"], 0);
2973 $datarray["owner-link"] = $datarray["author-link"];
2974 $datarray["owner-id"] = $datarray["author-id"];
2976 $datarray["guid"] = $guid;
2977 $datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
2978 $datarray['uri-id'] = ItemURI::insert(['uri' => $datarray['uri'], 'guid' => $datarray['guid']]);
2980 $datarray["verb"] = Activity::POST;
2981 $datarray["gravity"] = GRAVITY_PARENT;
2983 $datarray["protocol"] = Conversation::PARCEL_DIASPORA;
2984 $datarray["source"] = $xml;
2986 $datarray["body"] = self::replacePeopleGuid($body, $contact["url"]);
2988 self::storeMentions($datarray['uri-id'], $text);
2989 Tag::storeRawTagsFromBody($datarray['uri-id'], $datarray["body"]);
2991 if ($provider_display_name != "") {
2992 $datarray["app"] = $provider_display_name;
2995 $datarray["plink"] = self::plink($author, $guid);
2996 $datarray["private"] = (($public == "false") ? Item::PRIVATE : Item::PUBLIC);
2997 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2999 if (isset($address["address"])) {
3000 $datarray["location"] = $address["address"];
3003 if (isset($address["lat"]) && isset($address["lng"])) {
3004 $datarray["coord"] = $address["lat"]." ".$address["lng"];
3007 self::fetchGuid($datarray);
3008 $message_id = Item::insert($datarray);
3010 self::sendParticipation($contact, $datarray);
3013 Logger::log("Stored item ".$datarray["guid"]." with message id ".$message_id, Logger::DEBUG);
3014 if ($datarray['uid'] == 0) {
3015 Item::distribute($message_id);
3023 /* ************************************************************************************** *
3024 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
3025 * ************************************************************************************** */
3028 * returnes the handle of a contact
3030 * @param array $contact contact array
3032 * @return string the handle in the format user@domain.tld
3033 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3035 private static function myHandle(array $contact)
3037 if (!empty($contact["addr"])) {
3038 return $contact["addr"];
3041 // Normally we should have a filled "addr" field - but in the past this wasn't the case
3042 // So - just in case - we build the the address here.
3043 if ($contact["nickname"] != "") {
3044 $nick = $contact["nickname"];
3046 $nick = $contact["nick"];
3049 return $nick . "@" . substr(DI::baseUrl(), strpos(DI::baseUrl(), "://") + 3);
3054 * Creates the data for a private message in the new format
3056 * @param string $msg The message that is to be transmitted
3057 * @param array $user The record of the sender
3058 * @param array $contact Target of the communication
3059 * @param string $prvkey The private key of the sender
3060 * @param string $pubkey The public key of the receiver
3062 * @return string The encrypted data
3063 * @throws \Exception
3065 public static function encodePrivateData($msg, array $user, array $contact, $prvkey, $pubkey)
3067 Logger::log("Message: ".$msg, Logger::DATA);
3069 // without a public key nothing will work
3071 Logger::log("pubkey missing: contact id: ".$contact["id"]);
3075 $aes_key = openssl_random_pseudo_bytes(32);
3076 $b_aes_key = base64_encode($aes_key);
3077 $iv = openssl_random_pseudo_bytes(16);
3078 $b_iv = base64_encode($iv);
3080 $ciphertext = self::aesEncrypt($aes_key, $iv, $msg);
3082 $json = json_encode(["iv" => $b_iv, "key" => $b_aes_key]);
3084 $encrypted_key_bundle = "";
3085 if (!@openssl_public_encrypt($json, $encrypted_key_bundle, $pubkey)) {
3089 $json_object = json_encode(
3090 ["aes_key" => base64_encode($encrypted_key_bundle),
3091 "encrypted_magic_envelope" => base64_encode($ciphertext)]
3094 return $json_object;
3098 * Creates the envelope for the "fetch" endpoint and for the new format
3100 * @param string $msg The message that is to be transmitted
3101 * @param array $user The record of the sender
3103 * @return string The envelope
3104 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3106 public static function buildMagicEnvelope($msg, array $user)
3108 $b64url_data = Strings::base64UrlEncode($msg);
3109 $data = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
3111 $key_id = Strings::base64UrlEncode(self::myHandle($user));
3112 $type = "application/xml";
3113 $encoding = "base64url";
3114 $alg = "RSA-SHA256";
3115 $signable_data = $data.".".Strings::base64UrlEncode($type).".".Strings::base64UrlEncode($encoding).".".Strings::base64UrlEncode($alg);
3117 // Fallback if the private key wasn't transmitted in the expected field
3118 if ($user['uprvkey'] == "") {
3119 $user['uprvkey'] = $user['prvkey'];
3122 $signature = Crypto::rsaSign($signable_data, $user["uprvkey"]);
3123 $sig = Strings::base64UrlEncode($signature);
3125 $xmldata = ["me:env" => ["me:data" => $data,
3126 "@attributes" => ["type" => $type],
3127 "me:encoding" => $encoding,
3130 "@attributes2" => ["key_id" => $key_id]]];
3132 $namespaces = ["me" => "http://salmon-protocol.org/ns/magic-env"];
3134 return XML::fromArray($xmldata, $xml, false, $namespaces);
3138 * Create the envelope for a message
3140 * @param string $msg The message that is to be transmitted
3141 * @param array $user The record of the sender
3142 * @param array $contact Target of the communication
3143 * @param string $prvkey The private key of the sender
3144 * @param string $pubkey The public key of the receiver
3145 * @param bool $public Is the message public?
3147 * @return string The message that will be transmitted to other servers
3148 * @throws \Exception
3150 public static function buildMessage($msg, array $user, array $contact, $prvkey, $pubkey, $public = false)
3152 // The message is put into an envelope with the sender's signature
3153 $envelope = self::buildMagicEnvelope($msg, $user);
3155 // Private messages are put into a second envelope, encrypted with the receivers public key
3157 $envelope = self::encodePrivateData($envelope, $user, $contact, $prvkey, $pubkey);
3164 * Creates a signature for a message
3166 * @param array $owner the array of the owner of the message
3167 * @param array $message The message that is to be signed
3169 * @return string The signature
3171 private static function signature($owner, $message)
3174 unset($sigmsg["author_signature"]);
3175 unset($sigmsg["parent_author_signature"]);
3177 $signed_text = implode(";", $sigmsg);
3179 return base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
3183 * Transmit a message to a target server
3185 * @param array $owner the array of the item owner
3186 * @param array $contact Target of the communication
3187 * @param string $envelope The message that is to be transmitted
3188 * @param bool $public_batch Is it a public post?
3189 * @param string $guid message guid
3191 * @return int Result of the transmission
3192 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3193 * @throws \ImagickException
3195 private static function transmit(array $owner, array $contact, $envelope, $public_batch, $guid = "")
3197 $enabled = intval(DI::config()->get("system", "diaspora_enabled"));
3202 $logid = Strings::getRandomHex(4);
3204 // We always try to use the data from the fcontact table.
3205 // This is important for transmitting data to Friendica servers.
3206 if (!empty($contact['addr'])) {
3207 $fcontact = self::personByHandle($contact['addr']);
3208 if (!empty($fcontact)) {
3209 $dest_url = ($public_batch ? $fcontact["batch"] : $fcontact["notify"]);
3213 if (empty($dest_url)) {
3214 $dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
3218 Logger::log("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
3222 Logger::log("transmit: ".$logid."-".$guid." ".$dest_url);
3224 if (!intval(DI::config()->get("system", "diaspora_test"))) {
3225 $content_type = (($public_batch) ? "application/magic-envelope+xml" : "application/json");
3227 $postResult = DI::httpRequest()->post($dest_url . "/", $envelope, ["Content-Type: " . $content_type]);
3228 $return_code = $postResult->getReturnCode();
3230 Logger::log("test_mode");
3234 Logger::log("transmit: ".$logid."-".$guid." to ".$dest_url." returns: ".$return_code);
3236 return $return_code ? $return_code : -1;
3241 * Build the post xml
3243 * @param string $type The message type
3244 * @param array $message The message data
3246 * @return string The post XML
3248 public static function buildPostXml($type, $message)
3250 $data = [$type => $message];
3252 return XML::fromArray($data, $xml);
3256 * Builds and transmit messages
3258 * @param array $owner the array of the item owner
3259 * @param array $contact Target of the communication
3260 * @param string $type The message type
3261 * @param array $message The message data
3262 * @param bool $public_batch Is it a public post?
3263 * @param string $guid message guid
3265 * @return int Result of the transmission
3266 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3267 * @throws \ImagickException
3269 private static function buildAndTransmit(array $owner, array $contact, $type, $message, $public_batch = false, $guid = "")
3271 $msg = self::buildPostXml($type, $message);
3273 Logger::log('message: '.$msg, Logger::DATA);
3274 Logger::log('send guid '.$guid, Logger::DEBUG);
3276 // Fallback if the private key wasn't transmitted in the expected field
3277 if (empty($owner['uprvkey'])) {
3278 $owner['uprvkey'] = $owner['prvkey'];
3281 $envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
3283 $return_code = self::transmit($owner, $contact, $envelope, $public_batch, $guid);
3285 Logger::log("guid: ".$guid." result ".$return_code, Logger::DEBUG);
3287 return $return_code;
3291 * sends a participation (Used to get all further updates)
3293 * @param array $contact Target of the communication
3294 * @param array $item Item array
3296 * @return int The result of the transmission
3297 * @throws \Exception
3299 private static function sendParticipation(array $contact, array $item)
3301 // Don't send notifications for private postings
3302 if ($item['private'] == Item::PRIVATE) {
3306 $cachekey = "diaspora:sendParticipation:".$item['guid'];
3308 $result = DI::cache()->get($cachekey);
3309 if (!is_null($result)) {
3313 // Fetch some user id to have a valid handle to transmit the participation.
3314 // In fact it doesn't matter which user sends this - but it is needed by the protocol.
3315 // If the item belongs to a user, we take this user id.
3316 if ($item['uid'] == 0) {
3317 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false];
3318 $first_user = DBA::selectFirst('user', ['uid'], $condition);
3319 $owner = User::getOwnerDataById($first_user['uid']);
3321 $owner = User::getOwnerDataById($item['uid']);
3324 $author = self::myHandle($owner);
3326 $message = ["author" => $author,
3327 "guid" => System::createUUID(),
3328 "parent_type" => "Post",
3329 "parent_guid" => $item["guid"]];
3331 Logger::log("Send participation for ".$item["guid"]." by ".$author, Logger::DEBUG);
3333 // It doesn't matter what we store, we only want to avoid sending repeated notifications for the same item
3334 DI::cache()->set($cachekey, $item["guid"], Duration::QUARTER_HOUR);
3336 return self::buildAndTransmit($owner, $contact, "participation", $message);
3340 * sends an account migration
3342 * @param array $owner the array of the item owner
3343 * @param array $contact Target of the communication
3344 * @param int $uid User ID
3346 * @return int The result of the transmission
3347 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3348 * @throws \ImagickException
3350 public static function sendAccountMigration(array $owner, array $contact, $uid)
3352 $old_handle = DI::pConfig()->get($uid, 'system', 'previous_addr');
3353 $profile = self::createProfileData($uid);
3355 $signed_text = 'AccountMigration:'.$old_handle.':'.$profile['author'];
3356 $signature = base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
3358 $message = ["author" => $old_handle,
3359 "profile" => $profile,
3360 "signature" => $signature];
3362 Logger::info('Send account migration', ['msg' => $message]);
3364 return self::buildAndTransmit($owner, $contact, "account_migration", $message);
3368 * Sends a "share" message
3370 * @param array $owner the array of the item owner
3371 * @param array $contact Target of the communication
3373 * @return int The result of the transmission
3374 * @throws \Exception
3376 public static function sendShare(array $owner, array $contact)
3379 * @todo support the different possible combinations of "following" and "sharing"
3380 * Currently, Diaspora only interprets the "sharing" field
3382 * Before switching this code productive, we have to check all "sendShare" calls if "rel" is set correctly
3386 switch ($contact["rel"]) {
3387 case Contact::FRIEND:
3391 case Contact::SHARING:
3395 case Contact::FOLLOWER:
3401 $message = ["author" => self::myHandle($owner),
3402 "recipient" => $contact["addr"],
3403 "following" => "true",
3404 "sharing" => "true"];
3406 Logger::info('Send share', ['msg' => $message]);
3408 return self::buildAndTransmit($owner, $contact, "contact", $message);
3412 * sends an "unshare"
3414 * @param array $owner the array of the item owner
3415 * @param array $contact Target of the communication
3417 * @return int The result of the transmission
3418 * @throws \Exception
3420 public static function sendUnshare(array $owner, array $contact)
3422 $message = ["author" => self::myHandle($owner),
3423 "recipient" => $contact["addr"],
3424 "following" => "false",
3425 "sharing" => "false"];
3427 Logger::info('Send unshare', ['msg' => $message]);
3429 return self::buildAndTransmit($owner, $contact, "contact", $message);
3433 * Checks a message body if it is a reshare
3435 * @param string $body The message body that is to be check
3436 * @param bool $complete Should it be a complete check or a simple check?
3438 * @return array|bool Reshare details or "false" if no reshare
3439 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3440 * @throws \ImagickException
3442 public static function isReshare($body, $complete = true)
3444 $body = trim($body);
3446 $reshared = Item::getShareArray(['body' => $body]);
3447 if (empty($reshared)) {
3451 // Skip if it isn't a pure repeated messages
3452 // Does it start with a share?
3453 if (!empty($reshared['comment']) && $complete) {
3457 if (!empty($reshared['guid']) && $complete) {
3458 $condition = ['guid' => $reshared['guid'], 'network' => [Protocol::DFRN, Protocol::DIASPORA]];
3459 $item = Item::selectFirst(['contact-id'], $condition);
3460 if (DBA::isResult($item)) {
3462 $ret["root_handle"] = self::handleFromContact($item["contact-id"]);
3463 $ret["root_guid"] = $reshared['guid'];
3465 } elseif ($complete) {
3466 // We are resharing something that isn't a DFRN or Diaspora post.
3467 // So we have to return "false" on "$complete" to not trigger a reshare.
3470 } elseif (empty($reshared['guid']) && $complete) {
3476 if (!empty($reshared['profile']) && ($cid = Contact::getIdForURL($reshared['profile']))) {
3477 $contact = DBA::selectFirst('contact', ['addr'], ['id' => $cid]);
3478 if (!empty($contact['addr'])) {
3479 $ret['root_handle'] = $contact['addr'];
3483 if (empty($ret) && !$complete) {
3491 * Create an event array
3493 * @param integer $event_id The id of the event
3495 * @return array with event data
3496 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3498 private static function buildEvent($event_id)
3500 $r = q("SELECT `guid`, `uid`, `start`, `finish`, `nofinish`, `summary`, `desc`, `location`, `adjust` FROM `event` WHERE `id` = %d", intval($event_id));
3501 if (!DBA::isResult($r)) {
3509 $r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d", intval($event['uid']));
3510 if (!DBA::isResult($r)) {
3516 $r = q("SELECT `addr`, `nick` FROM `contact` WHERE `uid` = %d AND `self`", intval($event['uid']));
3517 if (!DBA::isResult($r)) {
3523 $eventdata['author'] = self::myHandle($owner);
3525 if ($event['guid']) {
3526 $eventdata['guid'] = $event['guid'];
3529 $mask = DateTimeFormat::ATOM;
3531 /// @todo - establish "all day" events in Friendica
3532 $eventdata["all_day"] = "false";
3534 $eventdata['timezone'] = 'UTC';
3535 if (!$event['adjust'] && $user['timezone']) {
3536 $eventdata['timezone'] = $user['timezone'];
3539 if ($event['start']) {
3540 $eventdata['start'] = DateTimeFormat::convert($event['start'], "UTC", $eventdata['timezone'], $mask);
3542 if ($event['finish'] && !$event['nofinish']) {
3543 $eventdata['end'] = DateTimeFormat::convert($event['finish'], "UTC", $eventdata['timezone'], $mask);
3545 if ($event['summary']) {
3546 $eventdata['summary'] = html_entity_decode(BBCode::toMarkdown($event['summary']));
3548 if ($event['desc']) {
3549 $eventdata['description'] = html_entity_decode(BBCode::toMarkdown($event['desc']));
3551 if ($event['location']) {
3552 $event['location'] = preg_replace("/\[map\](.*?)\[\/map\]/ism", '$1', $event['location']);
3553 $coord = Map::getCoordinates($event['location']);
3556 $location["address"] = html_entity_decode(BBCode::toMarkdown($event['location']));
3557 if (!empty($coord['lat']) && !empty($coord['lon'])) {
3558 $location["lat"] = $coord['lat'];
3559 $location["lng"] = $coord['lon'];
3561 $location["lat"] = 0;
3562 $location["lng"] = 0;
3564 $eventdata['location'] = $location;
3571 * Create a post (status message or reshare)
3573 * @param array $item The item that will be exported
3574 * @param array $owner the array of the item owner
3577 * 'type' -> Message type ("status_message" or "reshare")
3578 * 'message' -> Array of XML elements of the status
3579 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3580 * @throws \ImagickException
3582 public static function buildStatus(array $item, array $owner)
3584 $cachekey = "diaspora:buildStatus:".$item['guid'];
3586 $result = DI::cache()->get($cachekey);
3587 if (!is_null($result)) {
3591 $myaddr = self::myHandle($owner);
3593 $public = ($item["private"] == Item::PRIVATE ? "false" : "true");
3594 $created = DateTimeFormat::utc($item['received'], DateTimeFormat::ATOM);
3595 $edited = DateTimeFormat::utc($item["edited"] ?? $item["created"], DateTimeFormat::ATOM);
3597 // Detect a share element and do a reshare
3598 if (($item['private'] != Item::PRIVATE) && ($ret = self::isReshare($item["body"]))) {
3599 $message = ["author" => $myaddr,
3600 "guid" => $item["guid"],
3601 "created_at" => $created,
3602 "root_author" => $ret["root_handle"],
3603 "root_guid" => $ret["root_guid"],
3604 "provider_display_name" => $item["app"],
3605 "public" => $public];
3609 $title = $item["title"];
3610 $body = $item["body"];
3612 // Fetch the title from an attached link - if there is one
3613 if (empty($item["title"]) && DI::pConfig()->get($owner['uid'], 'system', 'attach_link_title')) {
3614 $page_data = BBCode::getAttachmentData($item['body']);
3615 if (!empty($page_data['type']) && !empty($page_data['title']) && ($page_data['type'] == 'link')) {
3616 $title = $page_data['title'];
3620 if ($item['author-link'] != $item['owner-link']) {
3621 require_once 'mod/share.php';
3622 $body = BBCode::getShareOpeningTag($item['author-name'], $item['author-link'], $item['author-avatar'],
3623 $item['plink'], $item['created']) . $body . '[/share]';
3626 // convert to markdown
3627 $body = html_entity_decode(BBCode::toMarkdown($body));
3630 if (strlen($title)) {
3631 $body = "### ".html_entity_decode($title)."\n\n".$body;
3634 if ($item["attach"]) {
3635 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
3637 $body .= "\n".DI::l10n()->t("Attachments:")."\n";
3638 foreach ($matches as $mtch) {
3639 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
3646 if ($item["location"] != "")
3647 $location["address"] = $item["location"];
3649 if ($item["coord"] != "") {
3650 $coord = explode(" ", $item["coord"]);
3651 $location["lat"] = $coord[0];
3652 $location["lng"] = $coord[1];
3655 $message = ["author" => $myaddr,
3656 "guid" => $item["guid"],
3657 "created_at" => $created,
3658 "edited_at" => $edited,
3659 "public" => $public,
3661 "provider_display_name" => $item["app"],
3662 "location" => $location];
3664 // Diaspora rejects messages when they contain a location without "lat" or "lng"
3665 if (!isset($location["lat"]) || !isset($location["lng"])) {
3666 unset($message["location"]);
3669 if ($item['event-id'] > 0) {
3670 $event = self::buildEvent($item['event-id']);
3671 if (count($event)) {
3672 $message['event'] = $event;
3674 if (!empty($event['location']['address']) &&
3675 !empty($event['location']['lat']) &&
3676 !empty($event['location']['lng'])) {
3677 $message['location'] = $event['location'];
3680 /// @todo Once Diaspora supports it, we will remove the body and the location hack above
3681 // $message['text'] = '';
3685 $type = "status_message";
3688 $msg = ["type" => $type, "message" => $message];
3690 DI::cache()->set($cachekey, $msg, Duration::QUARTER_HOUR);
3695 private static function prependParentAuthorMention($body, $profile_url)
3697 $profile = Contact::getByURL($profile_url, false, ['addr', 'name', 'contact-type']);
3698 if (!empty($profile['addr'])
3699 && $profile['contact-type'] != Contact::TYPE_COMMUNITY
3700 && !strstr($body, $profile['addr'])
3701 && !strstr($body, $profile_url)
3703 $body = '@[url=' . $profile_url . ']' . $profile['name'] . '[/url] ' . $body;
3712 * @param array $item The item that will be exported
3713 * @param array $owner the array of the item owner
3714 * @param array $contact Target of the communication
3715 * @param bool $public_batch Is it a public post?
3717 * @return int The result of the transmission
3718 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3719 * @throws \ImagickException
3721 public static function sendStatus(array $item, array $owner, array $contact, $public_batch = false)
3723 $status = self::buildStatus($item, $owner);
3725 return self::buildAndTransmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
3729 * Creates a "like" object
3731 * @param array $item The item that will be exported
3732 * @param array $owner the array of the item owner
3734 * @return array The data for a "like"
3735 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3737 private static function constructLike(array $item, array $owner)
3739 $parent = Item::selectFirst(['guid', 'uri', 'parent-uri'], ['uri' => $item["thr-parent"]]);
3740 if (!DBA::isResult($parent)) {
3744 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3746 if ($item['verb'] === Activity::LIKE) {
3748 } elseif ($item['verb'] === Activity::DISLIKE) {
3749 $positive = "false";
3752 return(["author" => self::myHandle($owner),
3753 "guid" => $item["guid"],
3754 "parent_guid" => $parent["guid"],
3755 "parent_type" => $target_type,
3756 "positive" => $positive,
3757 "author_signature" => ""]);
3761 * Creates an "EventParticipation" object
3763 * @param array $item The item that will be exported
3764 * @param array $owner the array of the item owner
3766 * @return array The data for an "EventParticipation"
3767 * @throws \Exception
3769 private static function constructAttend(array $item, array $owner)
3771 $parent = Item::selectFirst(['guid', 'uri', 'parent-uri'], ['uri' => $item["thr-parent"]]);
3772 if (!DBA::isResult($parent)) {
3776 switch ($item['verb']) {
3777 case Activity::ATTEND:
3778 $attend_answer = 'accepted';
3780 case Activity::ATTENDNO:
3781 $attend_answer = 'declined';
3783 case Activity::ATTENDMAYBE:
3784 $attend_answer = 'tentative';
3787 Logger::log('Unknown verb '.$item['verb'].' in item '.$item['guid']);
3791 return(["author" => self::myHandle($owner),
3792 "guid" => $item["guid"],
3793 "parent_guid" => $parent["guid"],
3794 "status" => $attend_answer,
3795 "author_signature" => ""]);
3799 * Creates the object for a comment
3801 * @param array $item The item that will be exported
3802 * @param array $owner the array of the item owner
3804 * @return array|false The data for a comment
3805 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3807 private static function constructComment(array $item, array $owner)
3809 $cachekey = "diaspora:constructComment:".$item['guid'];
3811 $result = DI::cache()->get($cachekey);
3812 if (!is_null($result)) {
3816 $toplevel_item = Item::selectFirst(['guid', 'author-id', 'author-link'], ['id' => $item['parent'], 'parent' => $item['parent']]);
3817 if (!DBA::isResult($toplevel_item)) {
3818 Logger::error('Missing parent conversation item', ['parent' => $item['parent']]);
3822 $thread_parent_item = $toplevel_item;
3823 if ($item['thr-parent'] != $item['parent-uri']) {
3824 $thread_parent_item = Item::selectFirst(['guid', 'author-id', 'author-link'], ['uri' => $item['thr-parent'], 'uid' => $item['uid']]);
3827 $body = $item["body"];
3829 // The replied to autor mention is prepended for clarity if:
3830 // - Item replied isn't yours
3831 // - Item is public or explicit mentions are disabled
3832 // - Implicit mentions are enabled
3834 $item['author-id'] != $thread_parent_item['author-id']
3835 && (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions'))
3836 && !DI::config()->get('system', 'disable_implicit_mentions')
3838 $body = self::prependParentAuthorMention($body, $thread_parent_item['author-link']);
3841 $text = html_entity_decode(BBCode::toMarkdown($body));
3842 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
3843 $edited = DateTimeFormat::utc($item["edited"], DateTimeFormat::ATOM);
3846 "author" => self::myHandle($owner),
3847 "guid" => $item["guid"],
3848 "created_at" => $created,
3849 "edited_at" => $edited,
3850 "parent_guid" => $toplevel_item["guid"],
3852 "author_signature" => ""
3855 // Send the thread parent guid only if it is a threaded comment
3856 if ($item['thr-parent'] != $item['parent-uri']) {
3857 $comment['thread_parent_guid'] = $thread_parent_item['guid'];
3860 DI::cache()->set($cachekey, $comment, Duration::QUARTER_HOUR);
3866 * Send a like or a comment
3868 * @param array $item The item that will be exported
3869 * @param array $owner the array of the item owner
3870 * @param array $contact Target of the communication
3871 * @param bool $public_batch Is it a public post?
3873 * @return int The result of the transmission
3874 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
3875 * @throws \ImagickException
3877 public static function sendFollowup(array $item, array $owner, array $contact, $public_batch = false)
3879 if (in_array($item['verb'], [Activity::ATTEND, Activity::ATTENDNO, Activity::ATTENDMAYBE])) {
3880 $message = self::constructAttend($item, $owner);
3881 $type = "event_participation";
3882 } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
3883 $message = self::constructLike($item, $owner);
3885 } elseif (!in_array($item["verb"], [Activity::FOLLOW, Activity::TAG])) {
3886 $message = self::constructComment($item, $owner);
3890 if (empty($message)) {
3894 $message["author_signature"] = self::signature($owner, $message);
3896 return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3900 * Creates a message from a signature record entry
3902 * @param array $item The item that will be exported
3903 * @return array The message
3905 private static function messageFromSignature(array $item)
3907 // Split the signed text
3908 $signed_parts = explode(";", $item['signed_text']);
3910 if ($item["deleted"]) {
3911 $message = ["author" => $item['signer'],
3912 "target_guid" => $signed_parts[0],
3913 "target_type" => $signed_parts[1]];
3914 } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
3915 $message = ["author" => $signed_parts[4],
3916 "guid" => $signed_parts[1],
3917 "parent_guid" => $signed_parts[3],
3918 "parent_type" => $signed_parts[2],
3919 "positive" => $signed_parts[0],
3920 "author_signature" => $item['signature'],
3921 "parent_author_signature" => ""];
3923 // Remove the comment guid
3924 $guid = array_shift($signed_parts);
3926 // Remove the parent guid
3927 $parent_guid = array_shift($signed_parts);
3929 // Remove the handle
3930 $handle = array_pop($signed_parts);
3933 "author" => $handle,
3935 "parent_guid" => $parent_guid,
3936 "text" => implode(";", $signed_parts),
3937 "author_signature" => $item['signature'],
3938 "parent_author_signature" => ""
3945 * Relays messages (like, comment, retraction) to other servers if we are the thread owner
3947 * @param array $item The item that will be exported
3948 * @param array $owner the array of the item owner
3949 * @param array $contact Target of the communication
3950 * @param bool $public_batch Is it a public post?
3952 * @return int The result of the transmission
3953 * @throws \Exception
3955 public static function sendRelay(array $item, array $owner, array $contact, $public_batch = false)
3957 if ($item["deleted"]) {
3958 return self::sendRetraction($item, $owner, $contact, $public_batch, true);
3959 } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
3965 Logger::log("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", Logger::DEBUG);
3967 $msg = json_decode($item['signed_text'], true);
3970 if (is_array($msg)) {
3971 foreach ($msg as $field => $data) {
3972 if (!$item["deleted"]) {
3973 if ($field == "diaspora_handle") {
3976 if ($field == "target_type") {
3977 $field = "parent_type";
3981 $message[$field] = $data;
3984 Logger::log("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$item['signed_text'], Logger::DEBUG);
3987 $message["parent_author_signature"] = self::signature($owner, $message);
3989 Logger::info('Relayed data', ['msg' => $message]);
3991 return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3995 * Sends a retraction (deletion) of a message, like or comment
3997 * @param array $item The item that will be exported
3998 * @param array $owner the array of the item owner
3999 * @param array $contact Target of the communication
4000 * @param bool $public_batch Is it a public post?
4001 * @param bool $relay Is the retraction transmitted from a relay?
4003 * @return int The result of the transmission
4004 * @throws \Exception
4006 public static function sendRetraction(array $item, array $owner, array $contact, $public_batch = false, $relay = false)
4008 $itemaddr = self::handleFromContact($item["contact-id"], $item["author-id"]);
4010 $msg_type = "retraction";
4012 if ($item['gravity'] == GRAVITY_PARENT) {
4013 $target_type = "Post";
4014 } elseif (in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
4015 $target_type = "Like";
4017 $target_type = "Comment";
4020 $message = ["author" => $itemaddr,
4021 "target_guid" => $item['guid'],
4022 "target_type" => $target_type];
4024 Logger::info('Got message', ['msg' => $message]);
4026 return self::buildAndTransmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
4032 * @param array $item The item that will be exported
4033 * @param array $owner The owner
4034 * @param array $contact Target of the communication
4036 * @return int The result of the transmission
4037 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
4038 * @throws \ImagickException
4040 public static function sendMail(array $item, array $owner, array $contact)
4042 $myaddr = self::myHandle($owner);
4044 $cnv = DBA::selectFirst('conv', [], ['id' => $item["convid"], 'uid' => $item["uid"]]);
4045 if (!DBA::isResult($cnv)) {
4046 Logger::log("conversation not found.");
4050 $body = BBCode::toMarkdown($item["body"]);
4051 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
4054 "author" => $myaddr,
4055 "guid" => $item["guid"],
4056 "conversation_guid" => $cnv["guid"],
4058 "created_at" => $created,
4061 if ($item["reply"]) {
4066 "author" => $cnv["creator"],
4067 "guid" => $cnv["guid"],
4068 "subject" => $cnv["subject"],
4069 "created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
4070 "participants" => $cnv["recips"],
4074 $type = "conversation";
4077 return self::buildAndTransmit($owner, $contact, $type, $message, false, $item["guid"]);
4081 * Split a name into first name and last name
4083 * @param string $name The name
4085 * @return array The array with "first" and "last"
4087 public static function splitName($name) {
4088 $name = trim($name);
4090 // Is the name longer than 64 characters? Then cut the rest of it.
4091 if (strlen($name) > 64) {
4092 if ((strpos($name, ' ') <= 64) && (strpos($name, ' ') !== false)) {
4093 $name = trim(substr($name, 0, strrpos(substr($name, 0, 65), ' ')));
4095 $name = substr($name, 0, 64);
4099 // Take the first word as first name
4100 $first = ((strpos($name, ' ') ? trim(substr($name, 0, strpos($name, ' '))) : $name));
4101 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4102 if ((strlen($first) < 32) && (strlen($last) < 32)) {
4103 return ['first' => $first, 'last' => $last];
4106 // Take the last word as last name
4107 $first = ((strrpos($name, ' ') ? trim(substr($name, 0, strrpos($name, ' '))) : $name));
4108 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4110 if ((strlen($first) < 32) && (strlen($last) < 32)) {
4111 return ['first' => $first, 'last' => $last];
4114 // Take the first 32 characters if there is no space in the first 32 characters
4115 if ((strpos($name, ' ') > 32) || (strpos($name, ' ') === false)) {
4116 $first = substr($name, 0, 32);
4117 $last = substr($name, 32);
4118 return ['first' => $first, 'last' => $last];
4121 $first = trim(substr($name, 0, strrpos(substr($name, 0, 33), ' ')));
4122 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4124 // Check if the last name is longer than 32 characters
4125 if (strlen($last) > 32) {
4126 if (strpos($last, ' ') <= 32) {
4127 $last = trim(substr($last, 0, strrpos(substr($last, 0, 33), ' ')));
4129 $last = substr($last, 0, 32);
4133 return ['first' => $first, 'last' => $last];
4137 * Create profile data
4139 * @param int $uid The user id
4141 * @return array The profile data
4142 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
4144 private static function createProfileData($uid)
4146 $profile = DBA::selectFirst('owner-view', ['uid', 'addr', 'name', 'location', 'net-publish', 'dob', 'about', 'pub_keywords'], ['uid' => $uid]);
4147 if (!DBA::isResult($profile)) {
4151 $handle = $profile["addr"];
4153 $split_name = self::splitName($profile['name']);
4154 $first = $split_name['first'];
4155 $last = $split_name['last'];
4157 $large = DI::baseUrl().'/photo/custom/300/'.$profile['uid'].'.jpg';
4158 $medium = DI::baseUrl().'/photo/custom/100/'.$profile['uid'].'.jpg';
4159 $small = DI::baseUrl().'/photo/custom/50/' .$profile['uid'].'.jpg';
4160 $searchable = ($profile['net-publish'] ? 'true' : 'false');
4166 if ($searchable === 'true') {
4169 if ($profile['dob'] && ($profile['dob'] > '0000-00-00')) {
4170 list($year, $month, $day) = sscanf($profile['dob'], '%4d-%2d-%2d');
4174 $dob = DateTimeFormat::utc($year . '-' . $month . '-'. $day, 'Y-m-d');
4177 $about = BBCode::toMarkdown($profile['about']);
4179 $location = $profile['location'];
4181 if ($profile['pub_keywords']) {
4182 $kw = str_replace(',', ' ', $profile['pub_keywords']);
4183 $kw = str_replace(' ', ' ', $kw);
4184 $arr = explode(' ', $kw);
4186 for ($x = 0; $x < 5; $x ++) {
4187 if (!empty($arr[$x])) {
4188 $tags .= '#'. trim($arr[$x]) .' ';
4193 $tags = trim($tags);
4196 return ["author" => $handle,
4197 "first_name" => $first,
4198 "last_name" => $last,
4199 "image_url" => $large,
4200 "image_url_medium" => $medium,
4201 "image_url_small" => $small,
4204 "location" => $location,
4205 "searchable" => $searchable,
4207 "tag_string" => $tags];
4211 * Sends profile data
4213 * @param int $uid The user id
4214 * @param bool $recips optional, default false
4216 * @throws \Exception
4218 public static function sendProfile($uid, $recips = false)
4224 $owner = User::getOwnerDataById($uid);
4231 "SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
4232 AND `uid` = %d AND `rel` != %d",
4233 DBA::escape(Protocol::DIASPORA),
4235 intval(Contact::SHARING)
4243 $message = self::createProfileData($uid);
4245 // @ToDo Split this into single worker jobs
4246 foreach ($recips as $recip) {
4247 Logger::log("Send updated profile data for user ".$uid." to contact ".$recip["id"], Logger::DEBUG);
4248 self::buildAndTransmit($owner, $recip, "profile", $message);
4253 * Creates the signature for likes that are created on our system
4255 * @param integer $uid The user of that comment
4256 * @param array $item Item array
4258 * @return array Signed content
4259 * @throws \Exception
4261 public static function createLikeSignature($uid, array $item)
4263 $owner = User::getOwnerDataById($uid);
4264 if (empty($owner)) {
4265 Logger::info('No owner post, so not storing signature');
4269 if (!in_array($item["verb"], [Activity::LIKE, Activity::DISLIKE])) {
4273 $message = self::constructLike($item, $owner);
4274 if ($message === false) {
4278 $message["author_signature"] = self::signature($owner, $message);
4284 * Creates the signature for Comments that are created on our system
4286 * @param integer $uid The user of that comment
4287 * @param array $item Item array
4289 * @return array Signed content
4290 * @throws \Exception
4292 public static function createCommentSignature($uid, array $item)
4294 $owner = User::getOwnerDataById($uid);
4295 if (empty($owner)) {
4296 Logger::info('No owner post, so not storing signature');
4300 // This is a workaround for the behaviour of the "insert" function, see mod/item.php
4301 $item['thr-parent'] = $item['parent-uri'];
4303 $parent = Item::selectFirst(['parent-uri'], ['uri' => $item['parent-uri']]);
4304 if (!DBA::isResult($parent)) {
4308 $item['parent-uri'] = $parent['parent-uri'];
4310 $message = self::constructComment($item, $owner);
4311 if ($message === false) {
4315 $message["author_signature"] = self::signature($owner, $message);