3 * @file src/Protocol/diaspora.php
4 * @brief The implementation of the diaspora protocol
6 * The new protocol is described here: http://diaspora.github.io/diaspora_federation/index.html
7 * This implementation here interprets the old and the new protocol and sends the new one.
8 * In the future we will remove most stuff from "validPosting" and interpret only the new protocol.
11 namespace Friendica\Protocol;
13 use Friendica\Content\Text\BBCode;
14 use Friendica\Content\Text\Markdown;
15 use Friendica\Core\Cache;
16 use Friendica\Core\Config;
17 use Friendica\Core\L10n;
18 use Friendica\Core\PConfig;
19 use Friendica\Core\System;
20 use Friendica\Core\Worker;
21 use Friendica\Database\DBM;
22 use Friendica\Model\Contact;
23 use Friendica\Model\GContact;
24 use Friendica\Model\Group;
25 use Friendica\Model\Item;
26 use Friendica\Model\Profile;
27 use Friendica\Model\Queue;
28 use Friendica\Model\User;
29 use Friendica\Network\Probe;
30 use Friendica\Util\Crypto;
31 use Friendica\Util\DateTimeFormat;
32 use Friendica\Util\Network;
33 use Friendica\Util\XML;
34 use Friendica\Util\Map;
38 require_once 'include/dba.php';
39 require_once 'include/items.php';
42 * @brief This class contain functions to create and send Diaspora XML files
48 * @brief Return a list of relay servers
50 * The list contains not only the official relays but also servers that we serve directly
52 * @param integer $item_id The id of the item that is sent
53 * @param array $contacts The previously fetched contacts
55 * @return array of relay servers
57 public static function relayList($item_id, $contacts = [])
61 // Fetching relay servers
62 $serverdata = Config::get("system", "relay_server");
63 if ($serverdata != "") {
64 $servers = explode(",", $serverdata);
65 foreach ($servers as $server) {
66 $serverlist[$server] = trim($server);
70 if (Config::get("system", "relay_directly", false)) {
71 // We distribute our stuff based on the parent to ensure that the thread will be complete
72 $parent = dba::selectFirst('item', ['parent'], ['id' => $item_id]);
73 if (!DBM::is_result($parent)) {
77 // Servers that want to get all content
78 $servers = dba::select('gserver', ['url'], ['relay-subscribe' => true, 'relay-scope' => 'all']);
79 while ($server = dba::fetch($servers)) {
80 $serverlist[$server['url']] = $server['url'];
83 // All tags of the current post
84 $condition = ['otype' => TERM_OBJ_POST, 'type' => TERM_HASHTAG, 'oid' => $parent['parent']];
85 $tags = dba::select('term', ['term'], $condition);
87 while ($tag = dba::fetch($tags)) {
88 $taglist[] = $tag['term'];
91 // All servers who wants content with this tag
93 if (!empty($taglist)) {
94 $tagserver = dba::select('gserver-tag', ['gserver-id'], ['tag' => $taglist]);
95 while ($server = dba::fetch($tagserver)) {
96 $tagserverlist[] = $server['gserver-id'];
100 // All adresses with the given id
101 if (!empty($tagserverlist)) {
102 $servers = dba::select('gserver', ['url'], ['relay-subscribe' => true, 'relay-scope' => 'tags', 'id' => $tagserverlist]);
103 while ($server = dba::fetch($servers)) {
104 $serverlist[$server['url']] = $server['url'];
109 // Now we are collecting all relay contacts
110 foreach ($serverlist as $server_url) {
111 // We don't send messages to ourselves
112 if (link_compare($server_url, System::baseUrl())) {
115 $contact = self::getRelayContact($server_url);
116 if (is_bool($contact)) {
121 foreach ($contacts as $entry) {
122 if ($entry['batch'] == $contact['batch']) {
128 $contacts[] = $contact;
136 * @brief Return a contact for a given server address or creates a dummy entry
138 * @param string $server_url The url of the server
139 * @return array with the contact
141 private static function getRelayContact($server_url)
143 $fields = ['batch', 'id', 'name', 'network', 'archive', 'blocked'];
145 // Fetch the relay contact
146 $condition = ['uid' => 0, 'nurl' => normalise_link($server_url),
147 'contact-type' => ACCOUNT_TYPE_RELAY];
148 $contact = dba::selectFirst('contact', $fields, $condition);
150 if (DBM::is_result($contact)) {
151 if ($contact['archive'] || $contact['blocked']) {
156 self::setRelayContact($server_url);
158 $contact = dba::selectFirst('contact', $fields, $condition);
159 if (DBM::is_result($contact)) {
164 // It should never happen that we arrive here
169 * @brief Update or insert a relay contact
171 * @param string $server_url The url of the server
172 * @param array $network_fields Optional network specific fields
174 public static function setRelayContact($server_url, $network_fields = [])
176 $fields = ['created' => DateTimeFormat::utcNow(),
177 'name' => 'relay', 'nick' => 'relay',
178 'url' => $server_url, 'network' => NETWORK_DIASPORA,
179 'batch' => $server_url . '/receive/public',
180 'rel' => CONTACT_IS_FOLLOWER, 'blocked' => false,
181 'pending' => false, 'writable' => true];
183 $fields = array_merge($fields, $network_fields);
185 $condition = ['uid' => 0, 'nurl' => normalise_link($server_url),
186 'contact-type' => ACCOUNT_TYPE_RELAY];
188 if (dba::exists('contact', $condition)) {
189 unset($fields['created']);
192 dba::update('contact', $fields, $condition, true);
196 * @brief Return a list of participating contacts for a thread
198 * This is used for the participation feature.
199 * One of the parameters is a contact array.
200 * This is done to avoid duplicates.
202 * @param integer $thread The id of the thread
203 * @param array $contacts The previously fetched contacts
205 * @return array of relay servers
207 public static function participantsForThread($thread, $contacts)
209 $r = dba::p("SELECT `contact`.`batch`, `contact`.`id`, `contact`.`name`, `contact`.`network`,
210 `fcontact`.`batch` AS `fbatch`, `fcontact`.`network` AS `fnetwork` FROM `participation`
211 INNER JOIN `contact` ON `contact`.`id` = `participation`.`cid`
212 INNER JOIN `fcontact` ON `fcontact`.`id` = `participation`.`fid`
213 WHERE `participation`.`iid` = ?", $thread);
215 while ($contact = dba::fetch($r)) {
216 if (!empty($contact['fnetwork'])) {
217 $contact['network'] = $contact['fnetwork'];
219 unset($contact['fnetwork']);
221 if (empty($contact['batch']) && !empty($contact['fbatch'])) {
222 $contact['batch'] = $contact['fbatch'];
224 unset($contact['fbatch']);
227 foreach ($contacts as $entry) {
228 if ($entry['batch'] == $contact['batch']) {
234 $contacts[] = $contact;
243 * @brief repairs a signature that was double encoded
245 * The function is unused at the moment. It was copied from the old implementation.
247 * @param string $signature The signature
248 * @param string $handle The handle of the signature owner
249 * @param integer $level This value is only set inside this function to avoid endless loops
251 * @return string the repaired signature
253 private static function repairSignature($signature, $handle = "", $level = 1)
255 if ($signature == "") {
259 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
260 $signature = base64_decode($signature);
261 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
263 // Do a recursive call to be able to fix even multiple levels
265 $signature = self::repairSignature($signature, $handle, ++$level);
273 * @brief verify the envelope and return the verified data
275 * @param string $envelope The magic envelope
277 * @return string verified data
279 private static function verifyMagicEnvelope($envelope)
281 $basedom = XML::parseString($envelope);
283 if (!is_object($basedom)) {
284 logger("Envelope is no XML file");
288 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
290 if (sizeof($children) == 0) {
291 logger("XML has no children");
297 $data = base64url_decode($children->data);
298 $type = $children->data->attributes()->type[0];
300 $encoding = $children->encoding;
302 $alg = $children->alg;
304 $sig = base64url_decode($children->sig);
305 $key_id = $children->sig->attributes()->key_id[0];
307 $handle = base64url_decode($key_id);
310 $b64url_data = base64url_encode($data);
311 $msg = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
313 $signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
316 logger('No author could be decoded. Discarding. Message: ' . $envelope);
320 $key = self::key($handle);
322 logger("Couldn't get a key for handle " . $handle . ". Discarding.");
326 $verify = Crypto::rsaVerify($signable_data, $sig, $key);
328 logger('Message from ' . $handle . ' did not verify. Discarding.');
336 * @brief encrypts data via AES
338 * @param string $key The AES key
339 * @param string $iv The IV (is used for CBC encoding)
340 * @param string $data The data that is to be encrypted
342 * @return string encrypted data
344 private static function aesEncrypt($key, $iv, $data)
346 return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
350 * @brief decrypts data via AES
352 * @param string $key The AES key
353 * @param string $iv The IV (is used for CBC encoding)
354 * @param string $encrypted The encrypted data
356 * @return string decrypted data
358 private static function aesDecrypt($key, $iv, $encrypted)
360 return openssl_decrypt($encrypted, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
364 * @brief: Decodes incoming Diaspora message in the new format
366 * @param array $importer Array of the importer user
367 * @param string $raw raw post message
370 * 'message' -> decoded Diaspora XML message
371 * 'author' -> author diaspora handle
372 * 'key' -> author public key (converted to pkcs#8)
374 public static function decodeRaw($importer, $raw)
376 $data = json_decode($raw);
378 // Is it a private post? Then decrypt the outer Salmon
379 if (is_object($data)) {
380 $encrypted_aes_key_bundle = base64_decode($data->aes_key);
381 $ciphertext = base64_decode($data->encrypted_magic_envelope);
383 $outer_key_bundle = '';
384 @openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
385 $j_outer_key_bundle = json_decode($outer_key_bundle);
387 if (!is_object($j_outer_key_bundle)) {
388 logger('Outer Salmon did not verify. Discarding.');
389 System::httpExit(400);
392 $outer_iv = base64_decode($j_outer_key_bundle->iv);
393 $outer_key = base64_decode($j_outer_key_bundle->key);
395 $xml = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
400 $basedom = XML::parseString($xml);
402 if (!is_object($basedom)) {
403 logger('Received data does not seem to be an XML. Discarding. '.$xml);
404 System::httpExit(400);
407 $base = $basedom->children(NAMESPACE_SALMON_ME);
409 // Not sure if this cleaning is needed
410 $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
412 // Build the signed data
413 $type = $base->data[0]->attributes()->type[0];
414 $encoding = $base->encoding;
416 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
418 // This is the signature
419 $signature = base64url_decode($base->sig);
421 // Get the senders' public key
422 $key_id = $base->sig[0]->attributes()->key_id[0];
423 $author_addr = base64_decode($key_id);
424 if ($author_addr == '') {
425 logger('No author could be decoded. Discarding. Message: ' . $xml);
426 System::httpExit(400);
429 $key = self::key($author_addr);
431 logger("Couldn't get a key for handle " . $author_addr . ". Discarding.");
432 System::httpExit(400);
435 $verify = Crypto::rsaVerify($signed_data, $signature, $key);
437 logger('Message did not verify. Discarding.');
438 System::httpExit(400);
441 return ['message' => (string)base64url_decode($base->data),
442 'author' => unxmlify($author_addr),
443 'key' => (string)$key];
447 * @brief: Decodes incoming Diaspora message in the deprecated format
449 * @param array $importer Array of the importer user
450 * @param string $xml urldecoded Diaspora salmon
453 * 'message' -> decoded Diaspora XML message
454 * 'author' -> author diaspora handle
455 * 'key' -> author public key (converted to pkcs#8)
457 public static function decode($importer, $xml)
460 $basedom = XML::parseString($xml);
462 if (!is_object($basedom)) {
463 logger("XML is not parseable.");
466 $children = $basedom->children('https://joindiaspora.com/protocol');
468 $inner_aes_key = null;
471 if ($children->header) {
473 $author_link = str_replace('acct:', '', $children->header->author_id);
475 // This happens with posts from a relais
477 logger("This is no private post in the old format", LOGGER_DEBUG);
481 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
483 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
484 $ciphertext = base64_decode($encrypted_header->ciphertext);
486 $outer_key_bundle = '';
487 openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
489 $j_outer_key_bundle = json_decode($outer_key_bundle);
491 $outer_iv = base64_decode($j_outer_key_bundle->iv);
492 $outer_key = base64_decode($j_outer_key_bundle->key);
494 $decrypted = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
496 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
497 $idom = XML::parseString($decrypted);
499 $inner_iv = base64_decode($idom->iv);
500 $inner_aes_key = base64_decode($idom->aes_key);
502 $author_link = str_replace('acct:', '', $idom->author_id);
505 $dom = $basedom->children(NAMESPACE_SALMON_ME);
507 // figure out where in the DOM tree our data is hiding
510 if ($dom->provenance->data) {
511 $base = $dom->provenance;
512 } elseif ($dom->env->data) {
514 } elseif ($dom->data) {
519 logger('unable to locate salmon data in xml');
520 System::httpExit(400);
524 // Stash the signature away for now. We have to find their key or it won't be good for anything.
525 $signature = base64url_decode($base->sig);
529 // strip whitespace so our data element will return to one big base64 blob
530 $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
533 // stash away some other stuff for later
535 $type = $base->data[0]->attributes()->type[0];
536 $keyhash = $base->sig[0]->attributes()->keyhash[0];
537 $encoding = $base->encoding;
541 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
545 $data = base64url_decode($data);
549 $inner_decrypted = $data;
551 // Decode the encrypted blob
552 $inner_encrypted = base64_decode($data);
553 $inner_decrypted = self::aesDecrypt($inner_aes_key, $inner_iv, $inner_encrypted);
557 logger('Could not retrieve author URI.');
558 System::httpExit(400);
560 // Once we have the author URI, go to the web and try to find their public key
561 // (first this will look it up locally if it is in the fcontact cache)
562 // This will also convert diaspora public key from pkcs#1 to pkcs#8
564 logger('Fetching key for '.$author_link);
565 $key = self::key($author_link);
568 logger('Could not retrieve author key.');
569 System::httpExit(400);
572 $verify = Crypto::rsaVerify($signed_data, $signature, $key);
575 logger('Message did not verify. Discarding.');
576 System::httpExit(400);
579 logger('Message verified.');
581 return ['message' => (string)$inner_decrypted,
582 'author' => unxmlify($author_link),
583 'key' => (string)$key];
588 * @brief Dispatches public messages and find the fitting receivers
590 * @param array $msg The post that will be dispatched
592 * @return int The message id of the generated message, "true" or "false" if there was an error
594 public static function dispatchPublic($msg)
596 $enabled = intval(Config::get("system", "diaspora_enabled"));
598 logger("diaspora is disabled");
602 if (!($fields = self::validPosting($msg))) {
603 logger("Invalid posting");
607 $importer = ["uid" => 0, "page-flags" => PAGE_FREELOVE];
608 $success = self::dispatch($importer, $msg, $fields);
614 * @brief Dispatches the different message types to the different functions
616 * @param array $importer Array of the importer user
617 * @param array $msg The post that will be dispatched
618 * @param object $fields SimpleXML object that contains the message
620 * @return int The message id of the generated message, "true" or "false" if there was an error
622 public static function dispatch($importer, $msg, $fields = null)
624 // The sender is the handle of the contact that sent the message.
625 // This will often be different with relayed messages (for example "like" and "comment")
626 $sender = $msg["author"];
628 // This is only needed for private postings since this is already done for public ones before
629 if (is_null($fields)) {
631 if (!($fields = self::validPosting($msg))) {
632 logger("Invalid posting");
639 $type = $fields->getName();
641 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
644 case "account_migration":
646 logger('Message with type ' . $type . ' is not private, quitting.');
649 return self::receiveAccountMigration($importer, $fields);
651 case "account_deletion":
652 return self::receiveAccountDeletion($fields);
655 return self::receiveComment($importer, $sender, $fields, $msg["message"]);
659 logger('Message with type ' . $type . ' is not private, quitting.');
662 return self::receiveContactRequest($importer, $fields);
666 logger('Message with type ' . $type . ' is not private, quitting.');
669 return self::receiveConversation($importer, $msg, $fields);
672 return self::receiveLike($importer, $sender, $fields);
676 logger('Message with type ' . $type . ' is not private, quitting.');
679 return self::receiveMessage($importer, $fields);
681 case "participation":
683 logger('Message with type ' . $type . ' is not private, quitting.');
686 return self::receiveParticipation($importer, $fields);
688 case "photo": // Not implemented
689 return self::receivePhoto($importer, $fields);
691 case "poll_participation": // Not implemented
692 return self::receivePollParticipation($importer, $fields);
696 logger('Message with type ' . $type . ' is not private, quitting.');
699 return self::receiveProfile($importer, $fields);
702 return self::receiveReshare($importer, $fields, $msg["message"]);
705 return self::receiveRetraction($importer, $sender, $fields);
707 case "status_message":
708 return self::receiveStatusMessage($importer, $fields, $msg["message"]);
711 logger("Unknown message type ".$type);
719 * @brief Checks if a posting is valid and fetches the data fields.
721 * This function does not only check the signature.
722 * It also does the conversion between the old and the new diaspora format.
724 * @param array $msg Array with the XML, the sender handle and the sender signature
726 * @return bool|array If the posting is valid then an array with an SimpleXML object is returned
728 private static function validPosting($msg)
730 $data = XML::parseString($msg["message"]);
732 if (!is_object($data)) {
733 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
737 // Is this the new or the old version?
738 if ($data->getName() == "XML") {
740 foreach ($data->post->children() as $child) {
748 $type = $element->getName();
751 logger("Got message type ".$type.": ".$msg["message"], LOGGER_DATA);
753 // All retractions are handled identically from now on.
754 // In the new version there will only be "retraction".
755 if (in_array($type, ["signed_retraction", "relayable_retraction"]))
756 $type = "retraction";
758 if ($type == "request") {
762 $fields = new SimpleXMLElement("<".$type."/>");
765 $author_signature = null;
766 $parent_author_signature = null;
768 foreach ($element->children() as $fieldname => $entry) {
770 // Translation for the old XML structure
771 if ($fieldname == "diaspora_handle") {
772 $fieldname = "author";
774 if ($fieldname == "participant_handles") {
775 $fieldname = "participants";
777 if (in_array($type, ["like", "participation"])) {
778 if ($fieldname == "target_type") {
779 $fieldname = "parent_type";
782 if ($fieldname == "sender_handle") {
783 $fieldname = "author";
785 if ($fieldname == "recipient_handle") {
786 $fieldname = "recipient";
788 if ($fieldname == "root_diaspora_id") {
789 $fieldname = "root_author";
791 if ($type == "status_message") {
792 if ($fieldname == "raw_message") {
796 if ($type == "retraction") {
797 if ($fieldname == "post_guid") {
798 $fieldname = "target_guid";
800 if ($fieldname == "type") {
801 $fieldname = "target_type";
806 if (($fieldname == "author_signature") && ($entry != "")) {
807 $author_signature = base64_decode($entry);
808 } elseif (($fieldname == "parent_author_signature") && ($entry != "")) {
809 $parent_author_signature = base64_decode($entry);
810 } elseif (!in_array($fieldname, ["author_signature", "parent_author_signature", "target_author_signature"])) {
811 if ($signed_data != "") {
815 $signed_data .= $entry;
817 if (!in_array($fieldname, ["parent_author_signature", "target_author_signature"])
818 || ($orig_type == "relayable_retraction")
820 XML::copy($entry, $fields, $fieldname);
824 // This is something that shouldn't happen at all.
825 if (in_array($type, ["status_message", "reshare", "profile"])) {
826 if ($msg["author"] != $fields->author) {
827 logger("Message handle is not the same as envelope sender. Quitting this message.");
832 // Only some message types have signatures. So we quit here for the other types.
833 if (!in_array($type, ["comment", "like"])) {
836 // No author_signature? This is a must, so we quit.
837 if (!isset($author_signature)) {
838 logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
842 if (isset($parent_author_signature)) {
843 $key = self::key($msg["author"]);
845 logger("No key found for parent author ".$msg["author"], LOGGER_DEBUG);
849 if (!Crypto::rsaVerify($signed_data, $parent_author_signature, $key, "sha256")) {
850 logger("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
855 $key = self::key($fields->author);
857 logger("No key found for author ".$fields->author, LOGGER_DEBUG);
861 if (!Crypto::rsaVerify($signed_data, $author_signature, $key, "sha256")) {
862 logger("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
870 * @brief Fetches the public key for a given handle
872 * @param string $handle The handle
874 * @return string The public key
876 private static function key($handle)
878 $handle = strval($handle);
880 logger("Fetching diaspora key for: ".$handle);
882 $r = self::personByHandle($handle);
891 * @brief Fetches data for a given handle
893 * @param string $handle The handle
895 * @return array the queried data
897 public static function personByHandle($handle)
901 $person = dba::selectFirst('fcontact', [], ['network' => NETWORK_DIASPORA, 'addr' => $handle]);
902 if (DBM::is_result($person)) {
903 logger("In cache " . print_r($person, true), LOGGER_DEBUG);
905 // update record occasionally so it doesn't get stale
906 $d = strtotime($person["updated"]." +00:00");
907 if ($d < strtotime("now - 14 days")) {
911 if ($person["guid"] == "") {
916 if (!DBM::is_result($person) || $update) {
917 logger("create or refresh", LOGGER_DEBUG);
918 $r = Probe::uri($handle, NETWORK_DIASPORA);
920 // Note that Friendica contacts will return a "Diaspora person"
921 // if Diaspora connectivity is enabled on their server
922 if ($r && ($r["network"] === NETWORK_DIASPORA)) {
923 self::updateFContact($r);
925 // Fetch the updated or added contact
926 $person = dba::selectFirst('fcontact', [], ['network' => NETWORK_DIASPORA, 'addr' => $handle]);
927 if (!DBM::is_result($person)) {
937 * @brief Updates the fcontact table
939 * @param array $arr The fcontact data
941 private static function updateFContact($arr)
943 $fields = ['name' => $arr["name"], 'photo' => $arr["photo"],
944 'request' => $arr["request"], 'nick' => $arr["nick"],
945 'addr' => strtolower($arr["addr"]), 'guid' => $arr["guid"],
946 'batch' => $arr["batch"], 'notify' => $arr["notify"],
947 'poll' => $arr["poll"], 'confirm' => $arr["confirm"],
948 'alias' => $arr["alias"], 'pubkey' => $arr["pubkey"],
949 'updated' => DateTimeFormat::utcNow()];
951 $condition = ['url' => $arr["url"], 'network' => $arr["network"]];
953 dba::update('fcontact', $fields, $condition, true);
957 * @brief get a handle (user@domain.tld) from a given contact id
959 * @param int $contact_id The id in the contact table
960 * @param int $pcontact_id The id in the contact table (Used for the public contact)
962 * @return string the handle
964 private static function handleFromContact($contact_id, $pcontact_id = 0)
968 logger("contact id is ".$contact_id." - pcontact id is ".$pcontact_id, LOGGER_DEBUG);
970 if ($pcontact_id != 0) {
972 "SELECT `addr` FROM `contact` WHERE `id` = %d AND `addr` != ''",
976 if (DBM::is_result($r)) {
977 return strtolower($r[0]["addr"]);
982 "SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
986 if (DBM::is_result($r)) {
989 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
991 if ($contact['addr'] != "") {
992 $handle = $contact['addr'];
994 $baseurl_start = strpos($contact['url'], '://') + 3;
995 // allows installations in a subdirectory--not sure how Diaspora will handle
996 $baseurl_length = strpos($contact['url'], '/profile') - $baseurl_start;
997 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
998 $handle = $contact['nick'].'@'.$baseurl;
1002 return strtolower($handle);
1006 * @brief get a url (scheme://domain.tld/u/user) from a given Diaspora*
1009 * @param mixed $fcontact_guid Hexadecimal string guid
1011 * @return string the contact url or null
1013 public static function urlFromContactGuid($fcontact_guid)
1015 logger("fcontact guid is ".$fcontact_guid, LOGGER_DEBUG);
1018 "SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
1019 dbesc(NETWORK_DIASPORA),
1020 dbesc($fcontact_guid)
1023 if (DBM::is_result($r)) {
1024 return $r[0]['url'];
1031 * @brief Get a contact id for a given handle
1033 * @todo Move to Friendica\Model\Contact
1035 * @param int $uid The user id
1036 * @param string $handle The handle in the format user@domain.tld
1038 * @return int Contact id
1040 private static function contactByHandle($uid, $handle)
1042 // First do a direct search on the contact table
1044 "SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
1049 if (DBM::is_result($r)) {
1053 * We haven't found it?
1054 * We use another function for it that will possibly create a contact entry.
1056 $cid = Contact::getIdForURL($handle, $uid);
1059 /// @TODO Contact retrieval should be encapsulated into an "entity" class like `Contact`
1060 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
1062 if (DBM::is_result($r)) {
1068 $handle_parts = explode("@", $handle);
1069 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
1071 "SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
1072 dbesc(NETWORK_DFRN),
1076 if (DBM::is_result($r)) {
1080 logger("Haven't found contact for user ".$uid." and handle ".$handle, LOGGER_DEBUG);
1085 * @brief Check if posting is allowed for this contact
1087 * @param array $importer Array of the importer user
1088 * @param array $contact The contact that is checked
1089 * @param bool $is_comment Is the check for a comment?
1091 * @return bool is the contact allowed to post?
1093 private static function postAllow($importer, $contact, $is_comment = false)
1096 * Perhaps we were already sharing with this person. Now they're sharing with us.
1097 * That makes us friends.
1098 * Normally this should have handled by getting a request - but this could get lost
1100 // It is deactivated by now, due to side effects. See issue https://github.com/friendica/friendica/pull/4033
1101 // It is not removed by now. Possibly the code is needed?
1102 //if (!$is_comment && $contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1105 // array('rel' => CONTACT_IS_FRIEND, 'writable' => true),
1106 // array('id' => $contact["id"], 'uid' => $contact["uid"])
1109 // $contact["rel"] = CONTACT_IS_FRIEND;
1110 // logger("defining user ".$contact["nick"]." as friend");
1113 // We don't seem to like that person
1114 if ($contact["blocked"]) {
1115 // Maybe blocked, don't accept.
1117 // We are following this person?
1118 } elseif (($contact["rel"] == CONTACT_IS_SHARING) || ($contact["rel"] == CONTACT_IS_FRIEND)) {
1119 // Yes, then it is fine.
1121 // Is it a post to a community?
1122 } elseif (($contact["rel"] == CONTACT_IS_FOLLOWER) && in_array($importer["page-flags"], [PAGE_COMMUNITY, PAGE_PRVGROUP])) {
1125 // Is the message a global user or a comment?
1126 } elseif (($importer["uid"] == 0) || $is_comment) {
1127 // Messages for the global users and comments are always accepted
1135 * @brief Fetches the contact id for a handle and checks if posting is allowed
1137 * @param array $importer Array of the importer user
1138 * @param string $handle The checked handle in the format user@domain.tld
1139 * @param bool $is_comment Is the check for a comment?
1141 * @return array The contact data
1143 private static function allowedContactByHandle($importer, $handle, $is_comment = false)
1145 $contact = self::contactByHandle($importer["uid"], $handle);
1147 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
1148 // If a contact isn't found, we accept it anyway if it is a comment
1156 if (!self::postAllow($importer, $contact, $is_comment)) {
1157 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
1164 * @brief Does the message already exists on the system?
1166 * @param int $uid The user id
1167 * @param string $guid The guid of the message
1169 * @return int|bool message id if the message already was stored into the system - or false.
1171 private static function messageExists($uid, $guid)
1174 "SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1179 if (DBM::is_result($r)) {
1180 logger("message ".$guid." already exists for user ".$uid);
1188 * @brief Checks for links to posts in a message
1190 * @param array $item The item array
1193 private static function fetchGuid($item)
1195 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1196 preg_replace_callback(
1198 function ($match) use ($item) {
1199 self::fetchGuidSub($match, $item);
1204 preg_replace_callback(
1205 "&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1206 function ($match) use ($item) {
1207 self::fetchGuidSub($match, $item);
1214 * @brief Checks for relative /people/* links in an item body to match local
1215 * contacts or prepends the remote host taken from the author link.
1217 * @param string $body The item body to replace links from
1218 * @param string $author_link The author link for missing local contact fallback
1220 * @return string the replaced string
1222 public static function replacePeopleGuid($body, $author_link)
1224 $return = preg_replace_callback(
1225 "&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
1226 function ($match) use ($author_link) {
1228 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
1229 // 1 => '0123456789abcdef'
1231 $handle = self::urlFromContactGuid($match[1]);
1234 $return = '@[url='.$handle.']'.$match[2].'[/url]';
1236 // No local match, restoring absolute remote URL from author scheme and host
1237 $author_url = parse_url($author_link);
1238 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
1250 * @brief sub function of "fetchGuid" which checks for links in messages
1252 * @param array $match array containing a link that has to be checked for a message link
1253 * @param array $item The item array
1256 private static function fetchGuidSub($match, $item)
1258 if (!self::storeByGuid($match[1], $item["author-link"])) {
1259 self::storeByGuid($match[1], $item["owner-link"]);
1264 * @brief Fetches an item with a given guid from a given server
1266 * @param string $guid the message guid
1267 * @param string $server The server address
1268 * @param int $uid The user id of the user
1270 * @return int the message id of the stored message or false
1272 private static function storeByGuid($guid, $server, $uid = 0)
1274 $serverparts = parse_url($server);
1275 $server = $serverparts["scheme"]."://".$serverparts["host"];
1277 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
1279 $msg = self::message($guid, $server);
1285 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
1287 // Now call the dispatcher
1288 return self::dispatchPublic($msg);
1292 * @brief Fetches a message from a server
1294 * @param string $guid message guid
1295 * @param string $server The url of the server
1296 * @param int $level Endless loop prevention
1299 * 'message' => The message XML
1300 * 'author' => The author handle
1301 * 'key' => The public key of the author
1303 private static function message($guid, $server, $level = 0)
1309 // This will work for new Diaspora servers and Friendica servers from 3.5
1310 $source_url = $server."/fetch/post/".urlencode($guid);
1312 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
1314 $envelope = Network::fetchUrl($source_url);
1316 logger("Envelope was fetched.", LOGGER_DEBUG);
1317 $x = self::verifyMagicEnvelope($envelope);
1319 logger("Envelope could not be verified.", LOGGER_DEBUG);
1321 logger("Envelope was verified.", LOGGER_DEBUG);
1327 // This will work for older Diaspora and Friendica servers
1329 $source_url = $server."/p/".urlencode($guid).".xml";
1330 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
1332 $x = Network::fetchUrl($source_url);
1338 $source_xml = XML::parseString($x);
1340 if (!is_object($source_xml)) {
1344 if ($source_xml->post->reshare) {
1345 // Reshare of a reshare - old Diaspora version
1346 logger("Message is a reshare", LOGGER_DEBUG);
1347 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
1348 } elseif ($source_xml->getName() == "reshare") {
1349 // Reshare of a reshare - new Diaspora version
1350 logger("Message is a new reshare", LOGGER_DEBUG);
1351 return self::message($source_xml->root_guid, $server, ++$level);
1356 // Fetch the author - for the old and the new Diaspora version
1357 if ($source_xml->post->status_message->diaspora_handle) {
1358 $author = (string)$source_xml->post->status_message->diaspora_handle;
1359 } elseif ($source_xml->author && ($source_xml->getName() == "status_message")) {
1360 $author = (string)$source_xml->author;
1363 // If this isn't a "status_message" then quit
1365 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
1369 $msg = ["message" => $x, "author" => $author];
1371 $msg["key"] = self::key($msg["author"]);
1377 * @brief Fetches the item record of a given guid
1379 * @param int $uid The user id
1380 * @param string $guid message guid
1381 * @param string $author The handle of the item
1382 * @param array $contact The contact of the item owner
1384 * @return array the item record
1386 private static function parentItem($uid, $guid, $author, $contact)
1389 "SELECT `id`, `parent`, `body`, `wall`, `uri`, `guid`, `private`, `origin`,
1390 `author-name`, `author-link`, `author-avatar`,
1391 `owner-name`, `owner-link`, `owner-avatar`
1392 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1398 $result = self::storeByGuid($guid, $contact["url"], $uid);
1401 $person = self::personByHandle($author);
1402 $result = self::storeByGuid($guid, $person["url"], $uid);
1406 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
1409 "SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1410 `author-name`, `author-link`, `author-avatar`,
1411 `owner-name`, `owner-link`, `owner-avatar`
1412 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1420 logger("parent item not found: parent: ".$guid." - user: ".$uid);
1423 logger("parent item found: parent: ".$guid." - user: ".$uid);
1429 * @brief returns contact details
1431 * @param array $def_contact The default contact if the person isn't found
1432 * @param array $person The record of the person
1433 * @param int $uid The user id
1436 * 'cid' => contact id
1437 * 'network' => network type
1439 private static function authorContactByUrl($def_contact, $person, $uid)
1441 $condition = ['nurl' => normalise_link($person["url"]), 'uid' => $uid];
1442 $contact = dba::selectFirst('contact', ['id', 'network'], $condition);
1443 if (DBM::is_result($contact)) {
1444 $cid = $contact["id"];
1445 $network = $contact["network"];
1447 $cid = $def_contact["id"];
1448 $network = NETWORK_DIASPORA;
1451 return ["cid" => $cid, "network" => $network];
1455 * @brief Is the profile a hubzilla profile?
1457 * @param string $url The profile link
1459 * @return bool is it a hubzilla server?
1461 public static function isRedmatrix($url)
1463 return(strstr($url, "/channel/"));
1467 * @brief Generate a post link with a given handle and message guid
1469 * @param string $addr The user handle
1470 * @param string $guid message guid
1471 * @param string $parent_guid optional parent guid
1473 * @return string the post link
1475 private static function plink($addr, $guid, $parent_guid = '')
1477 $contact = Contact::getDetailsByAddr($addr);
1481 if ($parent_guid != '') {
1482 return "https://" . substr($addr, strpos($addr, "@") + 1) . "/posts/" . $parent_guid . "#" . $guid;
1484 return "https://" . substr($addr, strpos($addr, "@") + 1) . "/posts/" . $guid;
1488 if ($contact["network"] == NETWORK_DFRN) {
1489 return str_replace("/profile/" . $contact["nick"] . "/", "/display/" . $guid, $contact["url"] . "/");
1492 if (self::isRedmatrix($contact["url"])) {
1493 return $contact["url"] . "/?f=&mid=" . $guid;
1496 if ($parent_guid != '') {
1497 return "https://" . substr($addr, strpos($addr, "@") + 1) . "/posts/" . $parent_guid . "#" . $guid;
1499 return "https://" . substr($addr, strpos($addr, "@") + 1) . "/posts/" . $guid;
1504 * @brief Receives account migration
1506 * @param array $importer Array of the importer user
1507 * @param object $data The message object
1509 * @return bool Success
1511 private static function receiveAccountMigration($importer, $data)
1513 $old_handle = notags(unxmlify($data->author));
1514 $new_handle = notags(unxmlify($data->profile->author));
1515 $signature = notags(unxmlify($data->signature));
1517 $contact = self::contactByHandle($importer["uid"], $old_handle);
1519 logger("cannot find contact for sender: ".$old_handle." and user ".$importer["uid"]);
1523 logger("Got migration for ".$old_handle.", to ".$new_handle." with user ".$importer["uid"]);
1526 $signed_text = 'AccountMigration:'.$old_handle.':'.$new_handle;
1527 $key = self::key($old_handle);
1528 if (!Crypto::rsaVerify($signed_text, $signature, $key, "sha256")) {
1529 logger('No valid signature for migration.');
1533 // Update the profile
1534 self::receiveProfile($importer, $data->profile);
1536 // change the technical stuff in contact and gcontact
1537 $data = Probe::uri($new_handle);
1538 if ($data['network'] == NETWORK_PHANTOM) {
1539 logger('Account for '.$new_handle." couldn't be probed.");
1543 $fields = ['url' => $data['url'], 'nurl' => normalise_link($data['url']),
1544 'name' => $data['name'], 'nick' => $data['nick'],
1545 'addr' => $data['addr'], 'batch' => $data['batch'],
1546 'notify' => $data['notify'], 'poll' => $data['poll'],
1547 'network' => $data['network']];
1549 dba::update('contact', $fields, ['addr' => $old_handle]);
1551 $fields = ['url' => $data['url'], 'nurl' => normalise_link($data['url']),
1552 'name' => $data['name'], 'nick' => $data['nick'],
1553 'addr' => $data['addr'], 'connect' => $data['addr'],
1554 'notify' => $data['notify'], 'photo' => $data['photo'],
1555 'server_url' => $data['baseurl'], 'network' => $data['network']];
1557 dba::update('gcontact', $fields, ['addr' => $old_handle]);
1559 logger('Contacts are updated.');
1562 // This is an extreme performance killer
1563 Item::update(['owner-link' => $data["url"]], ['owner-link' => $contact["url"], 'uid' => $importer["uid"]]);
1564 Item::update(['author-link' => $data["url"]], ['author-link' => $contact["url"], 'uid' => $importer["uid"]]);
1566 logger('Items are updated.');
1572 * @brief Processes an account deletion
1574 * @param object $data The message object
1576 * @return bool Success
1578 private static function receiveAccountDeletion($data)
1580 $author = notags(unxmlify($data->author));
1582 $contacts = dba::select('contact', ['id'], ['addr' => $author]);
1583 while ($contact = dba::fetch($contacts)) {
1584 Contact::remove($contact["id"]);
1587 dba::delete('gcontact', ['addr' => $author]);
1589 logger('Removed contacts for ' . $author);
1595 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1597 * @param string $author Author handle
1598 * @param string $guid Message guid
1599 * @param boolean $onlyfound Only return uri when found in the database
1601 * @return string The constructed uri or the one from our database
1603 private static function getUriFromGuid($author, $guid, $onlyfound = false)
1605 $item = dba::selectFirst('item', ['uri'], ['guid' => $guid]);
1606 if (DBM::is_result($item)) {
1607 return $item["uri"];
1608 } elseif (!$onlyfound) {
1609 $contact = Contact::getDetailsByAddr($author, 0);
1610 if (!empty($contact['network'])) {
1611 $prefix = 'urn:X-' . $contact['network'] . ':';
1613 // This fallback should happen most unlikely
1614 $prefix = 'urn:X-dspr:';
1617 $author_parts = explode('@', $author);
1619 return $prefix . $author_parts[1] . ':' . $author_parts[0] . ':'. $guid;
1626 * @brief Fetch the guid from our database with a given uri
1628 * @param string $uri Message uri
1629 * @param string $uid Author handle
1631 * @return string The post guid
1633 private static function getGuidFromUri($uri, $uid)
1635 $r = q("SELECT `guid` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($uri), intval($uid));
1636 if (DBM::is_result($r)) {
1637 return $r[0]["guid"];
1644 * @brief Find the best importer for a comment, like, ...
1646 * @param string $guid The guid of the item
1648 * @return array|boolean the origin owner of that post - or false
1650 private static function importerForGuid($guid)
1652 $item = dba::fetch_first("SELECT `uid` FROM `item` WHERE `origin` AND `guid` = ? LIMIT 1", $guid);
1654 if (DBM::is_result($item)) {
1655 logger("Found user ".$item['uid']." as owner of item ".$guid, LOGGER_DEBUG);
1656 $contact = dba::fetch_first("SELECT * FROM `contact` WHERE `self` AND `uid` = ?", $item['uid']);
1657 if (DBM::is_result($contact)) {
1665 * @brief Processes an incoming comment
1667 * @param array $importer Array of the importer user
1668 * @param string $sender The sender of the message
1669 * @param object $data The message object
1670 * @param string $xml The original XML of the message
1672 * @return int The message id of the generated comment or "false" if there was an error
1674 private static function receiveComment($importer, $sender, $data, $xml)
1676 $author = notags(unxmlify($data->author));
1677 $guid = notags(unxmlify($data->guid));
1678 $parent_guid = notags(unxmlify($data->parent_guid));
1679 $text = unxmlify($data->text);
1681 if (isset($data->created_at)) {
1682 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
1684 $created_at = DateTimeFormat::utcNow();
1687 if (isset($data->thread_parent_guid)) {
1688 $thread_parent_guid = notags(unxmlify($data->thread_parent_guid));
1689 $thr_uri = self::getUriFromGuid("", $thread_parent_guid, true);
1694 $contact = self::allowedContactByHandle($importer, $sender, true);
1699 $message_id = self::messageExists($importer["uid"], $guid);
1704 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
1705 if (!$parent_item) {
1709 $person = self::personByHandle($author);
1710 if (!is_array($person)) {
1711 logger("unable to find author details");
1715 // Fetch the contact id - if we know this contact
1716 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
1720 $datarray["uid"] = $importer["uid"];
1721 $datarray["contact-id"] = $author_contact["cid"];
1722 $datarray["network"] = $author_contact["network"];
1724 $datarray["author-name"] = $person["name"];
1725 $datarray["author-link"] = $person["url"];
1726 $datarray["author-avatar"] = ((x($person, "thumb")) ? $person["thumb"] : $person["photo"]);
1728 $datarray["owner-name"] = $contact["name"];
1729 $datarray["owner-link"] = $contact["url"];
1730 $datarray["owner-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
1732 $datarray["guid"] = $guid;
1733 $datarray["uri"] = self::getUriFromGuid($author, $guid);
1735 $datarray["type"] = "remote-comment";
1736 $datarray["verb"] = ACTIVITY_POST;
1737 $datarray["gravity"] = GRAVITY_COMMENT;
1739 if ($thr_uri != "") {
1740 $datarray["parent-uri"] = $thr_uri;
1742 $datarray["parent-uri"] = $parent_item["uri"];
1745 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1747 $datarray["protocol"] = PROTOCOL_DIASPORA;
1748 $datarray["source"] = $xml;
1750 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1752 $datarray["plink"] = self::plink($author, $guid, $parent_item['guid']);
1754 $body = Markdown::toBBCode($text);
1756 $datarray["body"] = self::replacePeopleGuid($body, $person["url"]);
1758 self::fetchGuid($datarray);
1760 // If we are the origin of the parent we store the original data.
1761 // We notify our followers during the item storage.
1762 if ($parent_item["origin"]) {
1763 $datarray['diaspora_signed_text'] = json_encode($data);
1766 $message_id = Item::insert($datarray);
1768 if ($message_id <= 0) {
1773 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1774 if ($datarray['uid'] == 0) {
1775 Item::distribute($message_id, json_encode($data));
1783 * @brief processes and stores private messages
1785 * @param array $importer Array of the importer user
1786 * @param array $contact The contact of the message
1787 * @param object $data The message object
1788 * @param array $msg Array of the processed message, author handle and key
1789 * @param object $mesg The private message
1790 * @param array $conversation The conversation record to which this message belongs
1792 * @return bool "true" if it was successful
1794 private static function receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation)
1796 $author = notags(unxmlify($data->author));
1797 $guid = notags(unxmlify($data->guid));
1798 $subject = notags(unxmlify($data->subject));
1800 // "diaspora_handle" is the element name from the old version
1801 // "author" is the element name from the new version
1802 if ($mesg->author) {
1803 $msg_author = notags(unxmlify($mesg->author));
1804 } elseif ($mesg->diaspora_handle) {
1805 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1810 $msg_guid = notags(unxmlify($mesg->guid));
1811 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1812 $msg_text = unxmlify($mesg->text);
1813 $msg_created_at = DateTimeFormat::utc(notags(unxmlify($mesg->created_at)));
1815 if ($msg_conversation_guid != $guid) {
1816 logger("message conversation guid does not belong to the current conversation.");
1820 $body = Markdown::toBBCode($msg_text);
1821 $message_uri = $msg_author.":".$msg_guid;
1823 $person = self::personByHandle($msg_author);
1828 "SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
1830 intval($importer["uid"])
1832 if (DBM::is_result($r)) {
1833 logger("duplicate message already delivered.", LOGGER_DEBUG);
1838 "INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1839 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1840 intval($importer["uid"]),
1842 intval($conversation["id"]),
1843 dbesc($person["name"]),
1844 dbesc($person["photo"]),
1845 dbesc($person["url"]),
1846 intval($contact["id"]),
1851 dbesc($message_uri),
1852 dbesc($author.":".$guid),
1853 dbesc($msg_created_at)
1858 dba::update('conv', ['updated' => DateTimeFormat::utcNow()], ['id' => $conversation["id"]]);
1862 "type" => NOTIFY_MAIL,
1863 "notify_flags" => $importer["notify-flags"],
1864 "language" => $importer["language"],
1865 "to_name" => $importer["username"],
1866 "to_email" => $importer["email"],
1867 "uid" =>$importer["uid"],
1868 "item" => ["subject" => $subject, "body" => $body],
1869 "source_name" => $person["name"],
1870 "source_link" => $person["url"],
1871 "source_photo" => $person["thumb"],
1872 "verb" => ACTIVITY_POST,
1879 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1881 * @param array $importer Array of the importer user
1882 * @param array $msg Array of the processed message, author handle and key
1883 * @param object $data The message object
1885 * @return bool Success
1887 private static function receiveConversation($importer, $msg, $data)
1889 $author = notags(unxmlify($data->author));
1890 $guid = notags(unxmlify($data->guid));
1891 $subject = notags(unxmlify($data->subject));
1892 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
1893 $participants = notags(unxmlify($data->participants));
1895 $messages = $data->message;
1897 if (!count($messages)) {
1898 logger("empty conversation");
1902 $contact = self::allowedContactByHandle($importer, $msg["author"], true);
1907 $conversation = null;
1910 "SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1911 intval($importer["uid"]),
1915 $conversation = $c[0];
1918 "INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1919 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1920 intval($importer["uid"]),
1924 dbesc(DateTimeFormat::utcNow()),
1926 dbesc($participants)
1930 "SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1931 intval($importer["uid"]),
1937 $conversation = $c[0];
1940 if (!$conversation) {
1941 logger("unable to create conversation.");
1945 foreach ($messages as $mesg) {
1946 self::receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation);
1953 * @brief Creates the body for a "like" message
1955 * @param array $contact The contact that send us the "like"
1956 * @param array $parent_item The item array of the parent item
1957 * @param string $guid message guid
1959 * @return string the body
1961 private static function constructLikeBody($contact, $parent_item, $guid)
1963 $bodyverb = L10n::t('%1$s likes %2$s\'s %3$s');
1965 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1966 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1967 $plink = "[url=".System::baseUrl()."/display/".urlencode($guid)."]".L10n::t("status")."[/url]";
1969 return sprintf($bodyverb, $ulink, $alink, $plink);
1973 * @brief Creates a XML object for a "like"
1975 * @param array $importer Array of the importer user
1976 * @param array $parent_item The item array of the parent item
1978 * @return string The XML
1980 private static function constructLikeObject($importer, $parent_item)
1982 $objtype = ACTIVITY_OBJ_NOTE;
1983 $link = '<link rel="alternate" type="text/html" href="'.System::baseUrl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1984 $parent_body = $parent_item["body"];
1986 $xmldata = ["object" => ["type" => $objtype,
1988 "id" => $parent_item["uri"],
1991 "content" => $parent_body]];
1993 return XML::fromArray($xmldata, $xml, true);
1997 * @brief Processes "like" messages
1999 * @param array $importer Array of the importer user
2000 * @param string $sender The sender of the message
2001 * @param object $data The message object
2003 * @return int The message id of the generated like or "false" if there was an error
2005 private static function receiveLike($importer, $sender, $data)
2007 $author = notags(unxmlify($data->author));
2008 $guid = notags(unxmlify($data->guid));
2009 $parent_guid = notags(unxmlify($data->parent_guid));
2010 $parent_type = notags(unxmlify($data->parent_type));
2011 $positive = notags(unxmlify($data->positive));
2013 // likes on comments aren't supported by Diaspora - only on posts
2014 // But maybe this will be supported in the future, so we will accept it.
2015 if (!in_array($parent_type, ["Post", "Comment"])) {
2019 $contact = self::allowedContactByHandle($importer, $sender, true);
2024 $message_id = self::messageExists($importer["uid"], $guid);
2029 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
2030 if (!$parent_item) {
2034 $person = self::personByHandle($author);
2035 if (!is_array($person)) {
2036 logger("unable to find author details");
2040 // Fetch the contact id - if we know this contact
2041 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
2043 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
2044 // We would accept this anyhow.
2045 if ($positive == "true") {
2046 $verb = ACTIVITY_LIKE;
2048 $verb = ACTIVITY_DISLIKE;
2053 $datarray["protocol"] = PROTOCOL_DIASPORA;
2055 $datarray["uid"] = $importer["uid"];
2056 $datarray["contact-id"] = $author_contact["cid"];
2057 $datarray["network"] = $author_contact["network"];
2059 $datarray["author-name"] = $person["name"];
2060 $datarray["author-link"] = $person["url"];
2061 $datarray["author-avatar"] = ((x($person, "thumb")) ? $person["thumb"] : $person["photo"]);
2063 $datarray["owner-name"] = $contact["name"];
2064 $datarray["owner-link"] = $contact["url"];
2065 $datarray["owner-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
2067 $datarray["guid"] = $guid;
2068 $datarray["uri"] = self::getUriFromGuid($author, $guid);
2070 $datarray["type"] = "activity";
2071 $datarray["verb"] = $verb;
2072 $datarray["gravity"] = GRAVITY_LIKE;
2073 $datarray["parent-uri"] = $parent_item["uri"];
2075 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2076 $datarray["object"] = self::constructLikeObject($importer, $parent_item);
2078 $datarray["body"] = self::constructLikeBody($contact, $parent_item, $guid);
2080 // like on comments have the comment as parent. So we need to fetch the toplevel parent
2081 if ($parent_item["id"] != $parent_item["parent"]) {
2082 $toplevel = dba::selectFirst('item', ['origin'], ['id' => $parent_item["parent"]]);
2083 $origin = $toplevel["origin"];
2085 $origin = $parent_item["origin"];
2088 // If we are the origin of the parent we store the original data.
2089 // We notify our followers during the item storage.
2091 $datarray['diaspora_signed_text'] = json_encode($data);
2094 $message_id = Item::insert($datarray);
2096 if ($message_id <= 0) {
2101 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2102 if ($datarray['uid'] == 0) {
2103 Item::distribute($message_id, json_encode($data));
2111 * @brief Processes private messages
2113 * @param array $importer Array of the importer user
2114 * @param object $data The message object
2116 * @return bool Success?
2118 private static function receiveMessage($importer, $data)
2120 $author = notags(unxmlify($data->author));
2121 $guid = notags(unxmlify($data->guid));
2122 $conversation_guid = notags(unxmlify($data->conversation_guid));
2123 $text = unxmlify($data->text);
2124 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
2126 $contact = self::allowedContactByHandle($importer, $author, true);
2131 $conversation = null;
2134 "SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
2135 intval($importer["uid"]),
2136 dbesc($conversation_guid)
2139 $conversation = $c[0];
2141 logger("conversation not available.");
2145 $message_uri = $author.":".$guid;
2147 $person = self::personByHandle($author);
2149 logger("unable to find author details");
2153 $body = Markdown::toBBCode($text);
2155 $body = self::replacePeopleGuid($body, $person["url"]);
2160 "SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
2162 intval($importer["uid"])
2164 if (DBM::is_result($r)) {
2165 logger("duplicate message already delivered.", LOGGER_DEBUG);
2170 "INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
2171 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
2172 intval($importer["uid"]),
2174 intval($conversation["id"]),
2175 dbesc($person["name"]),
2176 dbesc($person["photo"]),
2177 dbesc($person["url"]),
2178 intval($contact["id"]),
2179 dbesc($conversation["subject"]),
2183 dbesc($message_uri),
2184 dbesc($author.":".$conversation["guid"]),
2190 dba::update('conv', ['updated' => DateTimeFormat::utcNow()], ['id' => $conversation["id"]]);
2195 * @brief Processes participations - unsupported by now
2197 * @param array $importer Array of the importer user
2198 * @param object $data The message object
2200 * @return bool always true
2202 private static function receiveParticipation($importer, $data)
2204 $author = strtolower(notags(unxmlify($data->author)));
2205 $parent_guid = notags(unxmlify($data->parent_guid));
2207 $contact_id = Contact::getIdForURL($author);
2209 logger('Contact not found: '.$author);
2213 $person = self::personByHandle($author);
2214 if (!is_array($person)) {
2215 logger("Person not found: ".$author);
2219 $item = dba::selectFirst('item', ['id'], ['guid' => $parent_guid, 'origin' => true, 'private' => false]);
2220 if (!DBM::is_result($item)) {
2221 logger('Item not found, no origin or private: '.$parent_guid);
2225 $author_parts = explode('@', $author);
2226 if (isset($author_parts[1])) {
2227 $server = $author_parts[1];
2229 // Should never happen
2233 logger('Received participation for ID: '.$item['id'].' - Contact: '.$contact_id.' - Server: '.$server, LOGGER_DEBUG);
2235 if (!dba::exists('participation', ['iid' => $item['id'], 'server' => $server])) {
2236 dba::insert('participation', ['iid' => $item['id'], 'cid' => $contact_id, 'fid' => $person['id'], 'server' => $server]);
2239 // Send all existing comments and likes to the requesting server
2240 $comments = dba::p("SELECT `item`.`id`, `item`.`verb`, `contact`.`self`
2242 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
2243 WHERE `item`.`parent` = ? AND `item`.`id` != `item`.`parent`", $item['id']);
2244 while ($comment = dba::fetch($comments)) {
2245 if ($comment['verb'] == ACTIVITY_POST) {
2246 $cmd = $comment['self'] ? 'comment-new' : 'comment-import';
2248 $cmd = $comment['self'] ? 'like' : 'comment-import';
2250 logger("Send ".$cmd." for item ".$comment['id']." to contact ".$contact_id, LOGGER_DEBUG);
2251 Worker::add(PRIORITY_HIGH, 'Delivery', $cmd, $comment['id'], $contact_id);
2253 dba::close($comments);
2259 * @brief Processes photos - unneeded
2261 * @param array $importer Array of the importer user
2262 * @param object $data The message object
2264 * @return bool always true
2266 private static function receivePhoto($importer, $data)
2268 // There doesn't seem to be a reason for this function,
2269 // since the photo data is transmitted in the status message as well
2274 * @brief Processes poll participations - unssupported
2276 * @param array $importer Array of the importer user
2277 * @param object $data The message object
2279 * @return bool always true
2281 private static function receivePollParticipation($importer, $data)
2283 // We don't support polls by now
2288 * @brief Processes incoming profile updates
2290 * @param array $importer Array of the importer user
2291 * @param object $data The message object
2293 * @return bool Success
2295 private static function receiveProfile($importer, $data)
2297 $author = strtolower(notags(unxmlify($data->author)));
2299 $contact = self::contactByHandle($importer["uid"], $author);
2304 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
2305 $image_url = unxmlify($data->image_url);
2306 $birthday = unxmlify($data->birthday);
2307 $gender = unxmlify($data->gender);
2308 $about = Markdown::toBBCode(unxmlify($data->bio));
2309 $location = Markdown::toBBCode(unxmlify($data->location));
2310 $searchable = (unxmlify($data->searchable) == "true");
2311 $nsfw = (unxmlify($data->nsfw) == "true");
2312 $tags = unxmlify($data->tag_string);
2314 $tags = explode("#", $tags);
2317 foreach ($tags as $tag) {
2318 $tag = trim(strtolower($tag));
2324 $keywords = implode(", ", $keywords);
2326 $handle_parts = explode("@", $author);
2327 $nick = $handle_parts[0];
2330 $name = $handle_parts[0];
2333 if (preg_match("|^https?://|", $image_url) === 0) {
2334 $image_url = "http://".$handle_parts[1].$image_url;
2337 Contact::updateAvatar($image_url, $importer["uid"], $contact["id"]);
2339 // Generic birthday. We don't know the timezone. The year is irrelevant.
2341 $birthday = str_replace("1000", "1901", $birthday);
2343 if ($birthday != "") {
2344 $birthday = DateTimeFormat::utc($birthday, "Y-m-d");
2347 // this is to prevent multiple birthday notifications in a single year
2348 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2350 if (substr($birthday, 5) === substr($contact["bd"], 5)) {
2351 $birthday = $contact["bd"];
2354 $fields = ['name' => $name, 'location' => $location,
2355 'name-date' => DateTimeFormat::utcNow(),
2356 'about' => $about, 'gender' => $gender,
2357 'addr' => $author, 'nick' => $nick,
2358 'keywords' => $keywords];
2360 if (!empty($birthday)) {
2361 $fields['bd'] = $birthday;
2364 dba::update('contact', $fields, ['id' => $contact['id']]);
2366 $gcontact = ["url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
2367 "photo" => $image_url, "name" => $name, "location" => $location,
2368 "about" => $about, "birthday" => $birthday, "gender" => $gender,
2369 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
2370 "hide" => !$searchable, "nsfw" => $nsfw];
2372 $gcid = GContact::update($gcontact);
2374 GContact::link($gcid, $importer["uid"], $contact["id"]);
2376 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
2382 * @brief Processes incoming friend requests
2384 * @param array $importer Array of the importer user
2385 * @param array $contact The contact that send the request
2388 private static function receiveRequestMakeFriend($importer, $contact)
2392 if ($contact["rel"] == CONTACT_IS_SHARING) {
2395 ['rel' => CONTACT_IS_FRIEND, 'writable' => true],
2396 ['id' => $contact["id"], 'uid' => $importer["uid"]]
2402 * @brief Processes incoming sharing notification
2404 * @param array $importer Array of the importer user
2405 * @param object $data The message object
2407 * @return bool Success
2409 private static function receiveContactRequest($importer, $data)
2411 $author = unxmlify($data->author);
2412 $recipient = unxmlify($data->recipient);
2414 if (!$author || !$recipient) {
2418 // the current protocol version doesn't know these fields
2419 // That means that we will assume their existance
2420 if (isset($data->following)) {
2421 $following = (unxmlify($data->following) == "true");
2426 if (isset($data->sharing)) {
2427 $sharing = (unxmlify($data->sharing) == "true");
2432 $contact = self::contactByHandle($importer["uid"], $author);
2434 // perhaps we were already sharing with this person. Now they're sharing with us.
2435 // That makes us friends.
2438 logger("Author ".$author." (Contact ".$contact["id"].") wants to follow us.", LOGGER_DEBUG);
2439 self::receiveRequestMakeFriend($importer, $contact);
2441 // refetch the contact array
2442 $contact = self::contactByHandle($importer["uid"], $author);
2444 // If we are now friends, we are sending a share message.
2445 // Normally we needn't to do so, but the first message could have been vanished.
2446 if (in_array($contact["rel"], [CONTACT_IS_FRIEND])) {
2447 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2449 logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2450 $ret = self::sendShare($u[0], $contact);
2455 logger("Author ".$author." doesn't want to follow us anymore.", LOGGER_DEBUG);
2456 Contact::removeFollower($importer, $contact);
2461 if (!$following && $sharing && in_array($importer["page-flags"], [PAGE_SOAPBOX, PAGE_NORMAL])) {
2462 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
2464 } elseif (!$following && !$sharing) {
2465 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
2467 } elseif (!$following && $sharing) {
2468 logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
2469 } elseif ($following && $sharing) {
2470 logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
2471 } elseif ($following && !$sharing) {
2472 logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
2475 $ret = self::personByHandle($author);
2477 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
2478 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
2482 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
2485 "INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
2486 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
2487 intval($importer["uid"]),
2488 dbesc($ret["network"]),
2489 dbesc($ret["addr"]),
2490 DateTimeFormat::utcNow(),
2492 dbesc(normalise_link($ret["url"])),
2494 dbesc($ret["name"]),
2495 dbesc($ret["nick"]),
2496 dbesc($ret["photo"]),
2497 dbesc($ret["pubkey"]),
2498 dbesc($ret["notify"]),
2499 dbesc($ret["poll"]),
2504 // find the contact record we just created
2506 $contact_record = self::contactByHandle($importer["uid"], $author);
2508 if (!$contact_record) {
2509 logger("unable to locate newly created contact record.");
2513 logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
2515 Group::addMember(User::getDefaultGroup($importer['uid'], $ret["network"]), $contact_record['id']);
2517 Contact::updateAvatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
2519 if (in_array($importer["page-flags"], [PAGE_NORMAL, PAGE_PRVGROUP])) {
2520 logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
2522 $hash = random_string().(string)time(); // Generate a confirm_key
2525 "INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
2526 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
2527 intval($importer["uid"]),
2528 intval($contact_record["id"]),
2531 dbesc(L10n::t("Sharing notification from Diaspora network")),
2533 dbesc(DateTimeFormat::utcNow())
2536 // automatic friend approval
2538 logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
2540 Contact::updateAvatar($contact_record["photo"], $importer["uid"], $contact_record["id"]);
2542 // technically they are sharing with us (CONTACT_IS_SHARING),
2543 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
2544 // we are going to change the relationship and make them a follower.
2546 if (($importer["page-flags"] == PAGE_FREELOVE) && $sharing && $following) {
2547 $new_relation = CONTACT_IS_FRIEND;
2548 } elseif (($importer["page-flags"] == PAGE_FREELOVE) && $sharing) {
2549 $new_relation = CONTACT_IS_SHARING;
2551 $new_relation = CONTACT_IS_FOLLOWER;
2555 "UPDATE `contact` SET `rel` = %d,
2563 intval($new_relation),
2564 dbesc(DateTimeFormat::utcNow()),
2565 dbesc(DateTimeFormat::utcNow()),
2566 intval($contact_record["id"])
2569 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2571 logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2572 $ret = self::sendShare($u[0], $contact_record);
2574 // Send the profile data, maybe it weren't transmitted before
2575 self::sendProfile($importer["uid"], [$contact_record]);
2583 * @brief Fetches a message with a given guid
2585 * @param string $guid message guid
2586 * @param string $orig_author handle of the original post
2587 * @param string $author handle of the sharer
2589 * @return array The fetched item
2591 public static function originalItem($guid, $orig_author)
2594 logger('Empty guid. Quitting.');
2598 // Do we already have this item?
2599 $fields = ['body', 'tag', 'app', 'created', 'object-type', 'uri', 'guid',
2600 'author-name', 'author-link', 'author-avatar'];
2601 $condition = ['guid' => $guid, 'visible' => true, 'deleted' => false, 'private' => false];
2602 $item = dba::selectfirst('item', $fields, $condition);
2604 if (DBM::is_result($item)) {
2605 logger("reshared message ".$guid." already exists on system.");
2607 // Maybe it is already a reshared item?
2608 // Then refetch the content, if it is a reshare from a reshare.
2609 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2610 if (self::isReshare($item["body"], true)) {
2612 } elseif (self::isReshare($item["body"], false) || strstr($item["body"], "[share")) {
2613 $item["body"] = Markdown::toBBCode(BBCode::toMarkdown($item["body"]));
2615 $item["body"] = self::replacePeopleGuid($item["body"], $item["author-link"]);
2617 // Add OEmbed and other information to the body
2618 $item["body"] = add_page_info_to_body($item["body"], false, true);
2626 if (!DBM::is_result($item)) {
2627 if (empty($orig_author)) {
2628 logger('Empty author for guid ' . $guid . '. Quitting.');
2632 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2633 logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2634 $stored = self::storeByGuid($guid, $server);
2637 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2638 logger("2nd try: reshared message ".$guid." will be fetched without SSL from the server ".$server);
2639 $stored = self::storeByGuid($guid, $server);
2643 $fields = ['body', 'tag', 'app', 'created', 'object-type', 'uri', 'guid',
2644 'author-name', 'author-link', 'author-avatar'];
2645 $condition = ['guid' => $guid, 'visible' => true, 'deleted' => false, 'private' => false];
2646 $item = dba::selectfirst('item', $fields, $condition);
2648 if (DBM::is_result($item)) {
2649 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2650 if (self::isReshare($item["body"], false)) {
2651 $item["body"] = Markdown::toBBCode(BBCode::toMarkdown($item["body"]));
2652 $item["body"] = self::replacePeopleGuid($item["body"], $item["author-link"]);
2663 * @brief Processes a reshare message
2665 * @param array $importer Array of the importer user
2666 * @param object $data The message object
2667 * @param string $xml The original XML of the message
2669 * @return int the message id
2671 private static function receiveReshare($importer, $data, $xml)
2673 $author = notags(unxmlify($data->author));
2674 $guid = notags(unxmlify($data->guid));
2675 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
2676 $root_author = notags(unxmlify($data->root_author));
2677 $root_guid = notags(unxmlify($data->root_guid));
2678 /// @todo handle unprocessed property "provider_display_name"
2679 $public = notags(unxmlify($data->public));
2681 $contact = self::allowedContactByHandle($importer, $author, false);
2686 $message_id = self::messageExists($importer["uid"], $guid);
2691 $original_item = self::originalItem($root_guid, $root_author);
2692 if (!$original_item) {
2696 $orig_url = System::baseUrl()."/display/".$original_item["guid"];
2700 $datarray["uid"] = $importer["uid"];
2701 $datarray["contact-id"] = $contact["id"];
2702 $datarray["network"] = NETWORK_DIASPORA;
2704 $datarray["author-name"] = $contact["name"];
2705 $datarray["author-link"] = $contact["url"];
2706 $datarray["author-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
2708 $datarray["owner-name"] = $datarray["author-name"];
2709 $datarray["owner-link"] = $datarray["author-link"];
2710 $datarray["owner-avatar"] = $datarray["author-avatar"];
2712 $datarray["guid"] = $guid;
2713 $datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
2715 $datarray["verb"] = ACTIVITY_POST;
2716 $datarray["gravity"] = GRAVITY_PARENT;
2718 $datarray["protocol"] = PROTOCOL_DIASPORA;
2719 $datarray["source"] = $xml;
2721 $prefix = share_header(
2722 $original_item["author-name"],
2723 $original_item["author-link"],
2724 $original_item["author-avatar"],
2725 $original_item["guid"],
2726 $original_item["created"],
2729 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2731 $datarray["tag"] = $original_item["tag"];
2732 $datarray["app"] = $original_item["app"];
2734 $datarray["plink"] = self::plink($author, $guid);
2735 $datarray["private"] = (($public == "false") ? 1 : 0);
2736 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2738 $datarray["object-type"] = $original_item["object-type"];
2740 self::fetchGuid($datarray);
2741 $message_id = Item::insert($datarray);
2743 self::sendParticipation($contact, $datarray);
2746 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2747 if ($datarray['uid'] == 0) {
2748 Item::distribute($message_id);
2757 * @brief Processes retractions
2759 * @param array $importer Array of the importer user
2760 * @param array $contact The contact of the item owner
2761 * @param object $data The message object
2763 * @return bool success
2765 private static function itemRetraction($importer, $contact, $data)
2767 $author = notags(unxmlify($data->author));
2768 $target_guid = notags(unxmlify($data->target_guid));
2769 $target_type = notags(unxmlify($data->target_type));
2771 $person = self::personByHandle($author);
2772 if (!is_array($person)) {
2773 logger("unable to find author detail for ".$author);
2777 if (empty($contact["url"])) {
2778 $contact["url"] = $person["url"];
2781 // Fetch items that are about to be deleted
2782 $fields = ['uid', 'id', 'parent', 'parent-uri', 'author-link'];
2784 // When we receive a public retraction, we delete every item that we find.
2785 if ($importer['uid'] == 0) {
2786 $condition = ["`guid` = ? AND NOT `file` LIKE '%%[%%' AND NOT `deleted`", $target_guid];
2788 $condition = ["`guid` = ? AND `uid` = ? AND NOT `file` LIKE '%%[%%' AND NOT `deleted`", $target_guid, $importer['uid']];
2790 $r = dba::select('item', $fields, $condition);
2791 if (!DBM::is_result($r)) {
2792 logger("Target guid ".$target_guid." was not found on this system for user ".$importer['uid'].".");
2796 while ($item = dba::fetch($r)) {
2797 // Fetch the parent item
2798 $parent = dba::selectFirst('item', ['author-link'], ['id' => $item["parent"]]);
2800 // Only delete it if the parent author really fits
2801 if (!link_compare($parent["author-link"], $contact["url"]) && !link_compare($item["author-link"], $contact["url"])) {
2802 logger("Thread author ".$parent["author-link"]." and item author ".$item["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2806 Item::delete(['id' => $item['id']]);
2808 logger("Deleted target ".$target_guid." (".$item["id"].") from user ".$item["uid"]." parent: ".$item["parent"], LOGGER_DEBUG);
2815 * @brief Receives retraction messages
2817 * @param array $importer Array of the importer user
2818 * @param string $sender The sender of the message
2819 * @param object $data The message object
2821 * @return bool Success
2823 private static function receiveRetraction($importer, $sender, $data)
2825 $target_type = notags(unxmlify($data->target_type));
2827 $contact = self::contactByHandle($importer["uid"], $sender);
2828 if (!$contact && (in_array($target_type, ["Contact", "Person"]))) {
2829 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2833 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2835 switch ($target_type) {
2840 case "StatusMessage":
2841 return self::itemRetraction($importer, $contact, $data);
2843 case "PollParticipation":
2845 // Currently unsupported
2849 logger("Unknown target type ".$target_type);
2856 * @brief Receives status messages
2858 * @param array $importer Array of the importer user
2859 * @param object $data The message object
2860 * @param string $xml The original XML of the message
2862 * @return int The message id of the newly created item
2864 private static function receiveStatusMessage($importer, $data, $xml)
2866 $author = notags(unxmlify($data->author));
2867 $guid = notags(unxmlify($data->guid));
2868 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
2869 $public = notags(unxmlify($data->public));
2870 $text = unxmlify($data->text);
2871 $provider_display_name = notags(unxmlify($data->provider_display_name));
2873 $contact = self::allowedContactByHandle($importer, $author, false);
2878 $message_id = self::messageExists($importer["uid"], $guid);
2884 if ($data->location) {
2885 foreach ($data->location->children() as $fieldname => $data) {
2886 $address[$fieldname] = notags(unxmlify($data));
2890 $body = Markdown::toBBCode($text);
2894 // Attach embedded pictures to the body
2896 foreach ($data->photo as $photo) {
2897 $body = "[img]".unxmlify($photo->remote_photo_path).
2898 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2901 $datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
2903 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2905 // Add OEmbed and other information to the body
2906 if (!self::isRedmatrix($contact["url"])) {
2907 $body = add_page_info_to_body($body, false, true);
2911 /// @todo enable support for polls
2912 //if ($data->poll) {
2913 // foreach ($data->poll AS $poll)
2918 /// @todo enable support for events
2920 $datarray["uid"] = $importer["uid"];
2921 $datarray["contact-id"] = $contact["id"];
2922 $datarray["network"] = NETWORK_DIASPORA;
2924 $datarray["author-name"] = $contact["name"];
2925 $datarray["author-link"] = $contact["url"];
2926 $datarray["author-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
2928 $datarray["owner-name"] = $datarray["author-name"];
2929 $datarray["owner-link"] = $datarray["author-link"];
2930 $datarray["owner-avatar"] = $datarray["author-avatar"];
2932 $datarray["guid"] = $guid;
2933 $datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
2935 $datarray["verb"] = ACTIVITY_POST;
2936 $datarray["gravity"] = GRAVITY_PARENT;
2938 $datarray["protocol"] = PROTOCOL_DIASPORA;
2939 $datarray["source"] = $xml;
2941 $datarray["body"] = self::replacePeopleGuid($body, $contact["url"]);
2943 if ($provider_display_name != "") {
2944 $datarray["app"] = $provider_display_name;
2947 $datarray["plink"] = self::plink($author, $guid);
2948 $datarray["private"] = (($public == "false") ? 1 : 0);
2949 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2951 if (isset($address["address"])) {
2952 $datarray["location"] = $address["address"];
2955 if (isset($address["lat"]) && isset($address["lng"])) {
2956 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2959 self::fetchGuid($datarray);
2960 $message_id = Item::insert($datarray);
2962 self::sendParticipation($contact, $datarray);
2965 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2966 if ($datarray['uid'] == 0) {
2967 Item::distribute($message_id);
2975 /* ************************************************************************************** *
2976 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2977 * ************************************************************************************** */
2980 * @brief returnes the handle of a contact
2982 * @param array $contact contact array
2984 * @return string the handle in the format user@domain.tld
2986 private static function myHandle($contact)
2988 if ($contact["addr"] != "") {
2989 return $contact["addr"];
2992 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2993 // So - just in case - we build the the address here.
2994 if ($contact["nickname"] != "") {
2995 $nick = $contact["nickname"];
2997 $nick = $contact["nick"];
3000 return $nick."@".substr(System::baseUrl(), strpos(System::baseUrl(), "://") + 3);
3005 * @brief Creates the data for a private message in the new format
3007 * @param string $msg The message that is to be transmitted
3008 * @param array $user The record of the sender
3009 * @param array $contact Target of the communication
3010 * @param string $prvkey The private key of the sender
3011 * @param string $pubkey The public key of the receiver
3013 * @return string The encrypted data
3015 public static function encodePrivateData($msg, $user, $contact, $prvkey, $pubkey)
3017 logger("Message: ".$msg, LOGGER_DATA);
3019 // without a public key nothing will work
3021 logger("pubkey missing: contact id: ".$contact["id"]);
3025 $aes_key = openssl_random_pseudo_bytes(32);
3026 $b_aes_key = base64_encode($aes_key);
3027 $iv = openssl_random_pseudo_bytes(16);
3028 $b_iv = base64_encode($iv);
3030 $ciphertext = self::aesEncrypt($aes_key, $iv, $msg);
3032 $json = json_encode(["iv" => $b_iv, "key" => $b_aes_key]);
3034 $encrypted_key_bundle = "";
3035 openssl_public_encrypt($json, $encrypted_key_bundle, $pubkey);
3037 $json_object = json_encode(
3038 ["aes_key" => base64_encode($encrypted_key_bundle),
3039 "encrypted_magic_envelope" => base64_encode($ciphertext)]
3042 return $json_object;
3046 * @brief Creates the envelope for the "fetch" endpoint and for the new format
3048 * @param string $msg The message that is to be transmitted
3049 * @param array $user The record of the sender
3051 * @return string The envelope
3053 public static function buildMagicEnvelope($msg, $user)
3055 $b64url_data = base64url_encode($msg);
3056 $data = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
3058 $key_id = base64url_encode(self::myHandle($user));
3059 $type = "application/xml";
3060 $encoding = "base64url";
3061 $alg = "RSA-SHA256";
3062 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
3064 // Fallback if the private key wasn't transmitted in the expected field
3065 if ($user['uprvkey'] == "") {
3066 $user['uprvkey'] = $user['prvkey'];
3069 $signature = Crypto::rsaSign($signable_data, $user["uprvkey"]);
3070 $sig = base64url_encode($signature);
3072 $xmldata = ["me:env" => ["me:data" => $data,
3073 "@attributes" => ["type" => $type],
3074 "me:encoding" => $encoding,
3077 "@attributes2" => ["key_id" => $key_id]]];
3079 $namespaces = ["me" => "http://salmon-protocol.org/ns/magic-env"];
3081 return XML::fromArray($xmldata, $xml, false, $namespaces);
3085 * @brief Create the envelope for a message
3087 * @param string $msg The message that is to be transmitted
3088 * @param array $user The record of the sender
3089 * @param array $contact Target of the communication
3090 * @param string $prvkey The private key of the sender
3091 * @param string $pubkey The public key of the receiver
3092 * @param bool $public Is the message public?
3094 * @return string The message that will be transmitted to other servers
3096 public static function buildMessage($msg, $user, $contact, $prvkey, $pubkey, $public = false)
3098 // The message is put into an envelope with the sender's signature
3099 $envelope = self::buildMagicEnvelope($msg, $user);
3101 // Private messages are put into a second envelope, encrypted with the receivers public key
3103 $envelope = self::encodePrivateData($envelope, $user, $contact, $prvkey, $pubkey);
3110 * @brief Creates a signature for a message
3112 * @param array $owner the array of the owner of the message
3113 * @param array $message The message that is to be signed
3115 * @return string The signature
3117 private static function signature($owner, $message)
3120 unset($sigmsg["author_signature"]);
3121 unset($sigmsg["parent_author_signature"]);
3123 $signed_text = implode(";", $sigmsg);
3125 return base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
3129 * @brief Transmit a message to a target server
3131 * @param array $owner the array of the item owner
3132 * @param array $contact Target of the communication
3133 * @param string $envelope The message that is to be transmitted
3134 * @param bool $public_batch Is it a public post?
3135 * @param bool $queue_run Is the transmission called from the queue?
3136 * @param string $guid message guid
3138 * @return int Result of the transmission
3140 public static function transmit($owner, $contact, $envelope, $public_batch, $queue_run = false, $guid = "", $no_queue = false)
3144 $enabled = intval(Config::get("system", "diaspora_enabled"));
3149 $logid = random_string(4);
3151 $dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
3153 // We always try to use the data from the fcontact table.
3154 // This is important for transmitting data to Friendica servers.
3155 if (!empty($contact['addr'])) {
3156 $fcontact = self::personByHandle($contact['addr']);
3157 if (!empty($fcontact)) {
3158 $dest_url = ($public_batch ? $fcontact["batch"] : $fcontact["notify"]);
3163 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
3167 logger("transmit: ".$logid."-".$guid." ".$dest_url);
3169 if (!$queue_run && Queue::wasDelayed($contact["id"])) {
3172 if (!intval(Config::get("system", "diaspora_test"))) {
3173 $content_type = (($public_batch) ? "application/magic-envelope+xml" : "application/json");
3175 Network::post($dest_url."/", $envelope, ["Content-Type: ".$content_type]);
3176 $return_code = $a->get_curl_code();
3178 logger("test_mode");
3183 logger("transmit: ".$logid."-".$guid." to ".$dest_url." returns: ".$return_code);
3185 if (!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
3186 if (!$no_queue && ($contact['contact-type'] != ACCOUNT_TYPE_RELAY)) {
3187 logger("queue message");
3188 // queue message for redelivery
3189 Queue::add($contact["id"], NETWORK_DIASPORA, $envelope, $public_batch, $guid);
3192 // The message could not be delivered. We mark the contact as "dead"
3193 Contact::markForArchival($contact);
3194 } elseif (($return_code >= 200) && ($return_code <= 299)) {
3195 // We successfully delivered a message, the contact is alive
3196 Contact::unmarkForArchival($contact);
3199 return $return_code ? $return_code : -1;
3204 * @brief Build the post xml
3206 * @param string $type The message type
3207 * @param array $message The message data
3209 * @return string The post XML
3211 public static function buildPostXml($type, $message)
3213 $data = [$type => $message];
3215 return XML::fromArray($data, $xml);
3219 * @brief Builds and transmit messages
3221 * @param array $owner the array of the item owner
3222 * @param array $contact Target of the communication
3223 * @param string $type The message type
3224 * @param array $message The message data
3225 * @param bool $public_batch Is it a public post?
3226 * @param string $guid message guid
3227 * @param bool $spool Should the transmission be spooled or transmitted?
3229 * @return int Result of the transmission
3231 private static function buildAndTransmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false)
3233 $msg = self::buildPostXml($type, $message);
3235 logger('message: '.$msg, LOGGER_DATA);
3236 logger('send guid '.$guid, LOGGER_DEBUG);
3238 // Fallback if the private key wasn't transmitted in the expected field
3239 if ($owner['uprvkey'] == "") {
3240 $owner['uprvkey'] = $owner['prvkey'];
3243 $envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
3246 Queue::add($contact['id'], NETWORK_DIASPORA, $envelope, $public_batch, $guid);
3249 $return_code = self::transmit($owner, $contact, $envelope, $public_batch, false, $guid);
3252 logger("guid: ".$guid." result ".$return_code, LOGGER_DEBUG);
3254 return $return_code;
3258 * @brief sends a participation (Used to get all further updates)
3260 * @param array $contact Target of the communication
3261 * @param array $item Item array
3263 * @return int The result of the transmission
3265 private static function sendParticipation($contact, $item)
3267 // Don't send notifications for private postings
3268 if ($item['private']) {
3272 $cachekey = "diaspora:sendParticipation:".$item['guid'];
3274 $result = Cache::get($cachekey);
3275 if (!is_null($result)) {
3279 // Fetch some user id to have a valid handle to transmit the participation.
3280 // In fact it doesn't matter which user sends this - but it is needed by the protocol.
3281 // If the item belongs to a user, we take this user id.
3282 if ($item['uid'] == 0) {
3283 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false];
3284 $first_user = dba::selectFirst('user', ['uid'], $condition);
3285 $owner = User::getOwnerDataById($first_user['uid']);
3287 $owner = User::getOwnerDataById($item['uid']);
3290 $author = self::myHandle($owner);
3292 $message = ["author" => $author,
3293 "guid" => get_guid(32),
3294 "parent_type" => "Post",
3295 "parent_guid" => $item["guid"]];
3297 logger("Send participation for ".$item["guid"]." by ".$author, LOGGER_DEBUG);
3299 // It doesn't matter what we store, we only want to avoid sending repeated notifications for the same item
3300 Cache::set($cachekey, $item["guid"], CACHE_QUARTER_HOUR);
3302 return self::buildAndTransmit($owner, $contact, "participation", $message);
3306 * @brief sends an account migration
3308 * @param array $owner the array of the item owner
3309 * @param array $contact Target of the communication
3310 * @param int $uid User ID
3312 * @return int The result of the transmission
3314 public static function sendAccountMigration($owner, $contact, $uid)
3316 $old_handle = PConfig::get($uid, 'system', 'previous_addr');
3317 $profile = self::createProfileData($uid);
3319 $signed_text = 'AccountMigration:'.$old_handle.':'.$profile['author'];
3320 $signature = base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
3322 $message = ["author" => $old_handle,
3323 "profile" => $profile,
3324 "signature" => $signature];
3326 logger("Send account migration ".print_r($message, true), LOGGER_DEBUG);
3328 return self::buildAndTransmit($owner, $contact, "account_migration", $message);
3332 * @brief Sends a "share" message
3334 * @param array $owner the array of the item owner
3335 * @param array $contact Target of the communication
3337 * @return int The result of the transmission
3339 public static function sendShare($owner, $contact)
3342 * @todo support the different possible combinations of "following" and "sharing"
3343 * Currently, Diaspora only interprets the "sharing" field
3345 * Before switching this code productive, we have to check all "sendShare" calls if "rel" is set correctly
3349 switch ($contact["rel"]) {
3350 case CONTACT_IS_FRIEND:
3353 case CONTACT_IS_SHARING:
3356 case CONTACT_IS_FOLLOWER:
3362 $message = ["author" => self::myHandle($owner),
3363 "recipient" => $contact["addr"],
3364 "following" => "true",
3365 "sharing" => "true"];
3367 logger("Send share ".print_r($message, true), LOGGER_DEBUG);
3369 return self::buildAndTransmit($owner, $contact, "contact", $message);
3373 * @brief sends an "unshare"
3375 * @param array $owner the array of the item owner
3376 * @param array $contact Target of the communication
3378 * @return int The result of the transmission
3380 public static function sendUnshare($owner, $contact)
3382 $message = ["author" => self::myHandle($owner),
3383 "recipient" => $contact["addr"],
3384 "following" => "false",
3385 "sharing" => "false"];
3387 logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
3389 return self::buildAndTransmit($owner, $contact, "contact", $message);
3393 * @brief Checks a message body if it is a reshare
3395 * @param string $body The message body that is to be check
3396 * @param bool $complete Should it be a complete check or a simple check?
3398 * @return array|bool Reshare details or "false" if no reshare
3400 public static function isReshare($body, $complete = true)
3402 $body = trim($body);
3404 // Skip if it isn't a pure repeated messages
3405 // Does it start with a share?
3406 if ((strpos($body, "[share") > 0) && $complete) {
3410 // Does it end with a share?
3411 if (strlen($body) > (strrpos($body, "[/share]") + 8)) {
3415 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "$1", $body);
3416 // Skip if there is no shared message in there
3417 if ($body == $attributes) {
3421 // If we don't do the complete check we quit here
3424 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
3425 if ($matches[1] != "") {
3426 $guid = $matches[1];
3429 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
3430 if ($matches[1] != "") {
3431 $guid = $matches[1];
3434 if (($guid != "") && $complete) {
3435 $condition = ['guid' => $guid, 'network' => [NETWORK_DFRN, NETWORK_DIASPORA]];
3436 $item = dba::selectFirst('item', ['contact-id'], $condition);
3437 if (DBM::is_result($item)) {
3439 $ret["root_handle"] = self::handleFromContact($item["contact-id"]);
3440 $ret["root_guid"] = $guid;
3442 } elseif ($complete) {
3443 // We are resharing something that isn't a DFRN or Diaspora post.
3444 // So we have to return "false" on "$complete" to not trigger a reshare.
3447 } elseif (($guid == "") && $complete) {
3451 $ret["root_guid"] = $guid;
3454 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
3455 if ($matches[1] != "") {
3456 $profile = $matches[1];
3459 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
3460 if ($matches[1] != "") {
3461 $profile = $matches[1];
3466 if ($profile != "") {
3467 if (Contact::getIdForURL($profile)) {
3468 $author = Contact::getDetailsByURL($profile);
3469 $ret["root_handle"] = $author['addr'];
3473 if (empty($ret) && !$complete) {
3481 * @brief Create an event array
3483 * @param integer $event_id The id of the event
3485 * @return array with event data
3487 private static function buildEvent($event_id)
3489 $r = q("SELECT `guid`, `uid`, `start`, `finish`, `nofinish`, `summary`, `desc`, `location`, `adjust` FROM `event` WHERE `id` = %d", intval($event_id));
3490 if (!DBM::is_result($r)) {
3498 $r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d", intval($event['uid']));
3499 if (!DBM::is_result($r)) {
3505 $r = q("SELECT `addr`, `nick` FROM `contact` WHERE `uid` = %d AND `self`", intval($event['uid']));
3506 if (!DBM::is_result($r)) {
3512 $eventdata['author'] = self::myHandle($owner);
3514 if ($event['guid']) {
3515 $eventdata['guid'] = $event['guid'];
3518 $mask = DateTimeFormat::ATOM;
3520 /// @todo - establish "all day" events in Friendica
3521 $eventdata["all_day"] = "false";
3523 if (!$event['adjust']) {
3524 $eventdata['timezone'] = $user['timezone'];
3526 if ($eventdata['timezone'] == "") {
3527 $eventdata['timezone'] = 'UTC';
3531 if ($event['start']) {
3532 $eventdata['start'] = DateTimeFormat::convert($event['start'], "UTC", $eventdata['timezone'], $mask);
3534 if ($event['finish'] && !$event['nofinish']) {
3535 $eventdata['end'] = DateTimeFormat::convert($event['finish'], "UTC", $eventdata['timezone'], $mask);
3537 if ($event['summary']) {
3538 $eventdata['summary'] = html_entity_decode(BBCode::toMarkdown($event['summary']));
3540 if ($event['desc']) {
3541 $eventdata['description'] = html_entity_decode(BBCode::toMarkdown($event['desc']));
3543 if ($event['location']) {
3544 $event['location'] = preg_replace("/\[map\](.*?)\[\/map\]/ism", '$1', $event['location']);
3545 $coord = Map::getCoordinates($event['location']);
3548 $location["address"] = html_entity_decode(BBCode::toMarkdown($event['location']));
3549 if (!empty($coord['lat']) && !empty($coord['lon'])) {
3550 $location["lat"] = $coord['lat'];
3551 $location["lng"] = $coord['lon'];
3553 $location["lat"] = 0;
3554 $location["lng"] = 0;
3556 $eventdata['location'] = $location;
3563 * @brief Create a post (status message or reshare)
3565 * @param array $item The item that will be exported
3566 * @param array $owner the array of the item owner
3569 * 'type' -> Message type ("status_message" or "reshare")
3570 * 'message' -> Array of XML elements of the status
3572 public static function buildStatus($item, $owner)
3574 $cachekey = "diaspora:buildStatus:".$item['guid'];
3576 $result = Cache::get($cachekey);
3577 if (!is_null($result)) {
3581 $myaddr = self::myHandle($owner);
3583 $public = (($item["private"]) ? "false" : "true");
3585 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
3587 // Detect a share element and do a reshare
3588 if (!$item['private'] && ($ret = self::isReshare($item["body"]))) {
3589 $message = ["author" => $myaddr,
3590 "guid" => $item["guid"],
3591 "created_at" => $created,
3592 "root_author" => $ret["root_handle"],
3593 "root_guid" => $ret["root_guid"],
3594 "provider_display_name" => $item["app"],
3595 "public" => $public];
3599 $title = $item["title"];
3600 $body = $item["body"];
3602 if ($item['author-link'] != $item['owner-link']) {
3603 require_once 'mod/share.php';
3604 $body = share_header($item['author-name'], $item['author-link'], $item['author-avatar'],
3605 "", $item['created'], $item['plink']) . $body . '[/share]';
3608 // convert to markdown
3609 $body = html_entity_decode(BBCode::toMarkdown($body));
3612 if (strlen($title)) {
3613 $body = "## ".html_entity_decode($title)."\n\n".$body;
3616 if ($item["attach"]) {
3617 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
3619 $body .= "\n".L10n::t("Attachments:")."\n";
3620 foreach ($matches as $mtch) {
3621 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
3628 if ($item["location"] != "")
3629 $location["address"] = $item["location"];
3631 if ($item["coord"] != "") {
3632 $coord = explode(" ", $item["coord"]);
3633 $location["lat"] = $coord[0];
3634 $location["lng"] = $coord[1];
3637 $message = ["author" => $myaddr,
3638 "guid" => $item["guid"],
3639 "created_at" => $created,
3640 "public" => $public,
3642 "provider_display_name" => $item["app"],
3643 "location" => $location];
3645 // Diaspora rejects messages when they contain a location without "lat" or "lng"
3646 if (!isset($location["lat"]) || !isset($location["lng"])) {
3647 unset($message["location"]);
3650 if ($item['event-id'] > 0) {
3651 $event = self::buildEvent($item['event-id']);
3652 if (count($event)) {
3653 $message['event'] = $event;
3655 if (!empty($event['location']['address']) &&
3656 !empty($event['location']['lat']) &&
3657 !empty($event['location']['lng'])) {
3658 $message['location'] = $event['location'];
3661 /// @todo Once Diaspora supports it, we will remove the body and the location hack above
3662 // $message['text'] = '';
3666 $type = "status_message";
3669 $msg = ["type" => $type, "message" => $message];
3671 Cache::set($cachekey, $msg, CACHE_QUARTER_HOUR);
3677 * @brief Sends a post
3679 * @param array $item The item that will be exported
3680 * @param array $owner the array of the item owner
3681 * @param array $contact Target of the communication
3682 * @param bool $public_batch Is it a public post?
3684 * @return int The result of the transmission
3686 public static function sendStatus($item, $owner, $contact, $public_batch = false)
3688 $status = self::buildStatus($item, $owner);
3690 return self::buildAndTransmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
3694 * @brief Creates a "like" object
3696 * @param array $item The item that will be exported
3697 * @param array $owner the array of the item owner
3699 * @return array The data for a "like"
3701 private static function constructLike($item, $owner)
3704 "SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3705 dbesc($item["thr-parent"])
3707 if (!DBM::is_result($p)) {
3713 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3715 if ($item['verb'] === ACTIVITY_LIKE) {
3717 } elseif ($item['verb'] === ACTIVITY_DISLIKE) {
3718 $positive = "false";
3721 return(["author" => self::myHandle($owner),
3722 "guid" => $item["guid"],
3723 "parent_guid" => $parent["guid"],
3724 "parent_type" => $target_type,
3725 "positive" => $positive,
3726 "author_signature" => ""]);
3730 * @brief Creates an "EventParticipation" object
3732 * @param array $item The item that will be exported
3733 * @param array $owner the array of the item owner
3735 * @return array The data for an "EventParticipation"
3737 private static function constructAttend($item, $owner)
3740 "SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3741 dbesc($item["thr-parent"])
3743 if (!DBM::is_result($p)) {
3749 switch ($item['verb']) {
3750 case ACTIVITY_ATTEND:
3751 $attend_answer = 'accepted';
3753 case ACTIVITY_ATTENDNO:
3754 $attend_answer = 'declined';
3756 case ACTIVITY_ATTENDMAYBE:
3757 $attend_answer = 'tentative';
3760 logger('Unknown verb '.$item['verb'].' in item '.$item['guid']);
3764 return(["author" => self::myHandle($owner),
3765 "guid" => $item["guid"],
3766 "parent_guid" => $parent["guid"],
3767 "status" => $attend_answer,
3768 "author_signature" => ""]);
3772 * @brief Creates the object for a comment
3774 * @param array $item The item that will be exported
3775 * @param array $owner the array of the item owner
3777 * @return array The data for a comment
3779 private static function constructComment($item, $owner)
3781 $cachekey = "diaspora:constructComment:".$item['guid'];
3783 $result = Cache::get($cachekey);
3784 if (!is_null($result)) {
3789 "SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
3790 intval($item["parent"]),
3791 intval($item["parent"])
3794 if (!DBM::is_result($p)) {
3800 $text = html_entity_decode(BBCode::toMarkdown($item["body"]));
3801 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
3803 $comment = ["author" => self::myHandle($owner),
3804 "guid" => $item["guid"],
3805 "created_at" => $created,
3806 "parent_guid" => $parent["guid"],
3808 "author_signature" => ""];
3810 // Send the thread parent guid only if it is a threaded comment
3811 if ($item['thr-parent'] != $item['parent-uri']) {
3812 $comment['thread_parent_guid'] = self::getGuidFromUri($item['thr-parent'], $item['uid']);
3815 Cache::set($cachekey, $comment, CACHE_QUARTER_HOUR);
3821 * @brief Send a like or a comment
3823 * @param array $item The item that will be exported
3824 * @param array $owner the array of the item owner
3825 * @param array $contact Target of the communication
3826 * @param bool $public_batch Is it a public post?
3828 * @return int The result of the transmission
3830 public static function sendFollowup($item, $owner, $contact, $public_batch = false)
3832 if (in_array($item['verb'], [ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE])) {
3833 $message = self::constructAttend($item, $owner);
3834 $type = "event_participation";
3835 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3836 $message = self::constructLike($item, $owner);
3839 $message = self::constructComment($item, $owner);
3847 $message["author_signature"] = self::signature($owner, $message);
3849 return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3853 * @brief Creates a message from a signature record entry
3855 * @param array $item The item that will be exported
3856 * @param array $signature The entry of the "sign" record
3858 * @return string The message
3860 private static function messageFromSignature($item, $signature)
3862 // Split the signed text
3863 $signed_parts = explode(";", $signature['signed_text']);
3865 if ($item["deleted"]) {
3866 $message = ["author" => $signature['signer'],
3867 "target_guid" => $signed_parts[0],
3868 "target_type" => $signed_parts[1]];
3869 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3870 $message = ["author" => $signed_parts[4],
3871 "guid" => $signed_parts[1],
3872 "parent_guid" => $signed_parts[3],
3873 "parent_type" => $signed_parts[2],
3874 "positive" => $signed_parts[0],
3875 "author_signature" => $signature['signature'],
3876 "parent_author_signature" => ""];
3878 // Remove the comment guid
3879 $guid = array_shift($signed_parts);
3881 // Remove the parent guid
3882 $parent_guid = array_shift($signed_parts);
3884 // Remove the handle
3885 $handle = array_pop($signed_parts);
3887 // Glue the parts together
3888 $text = implode(";", $signed_parts);
3890 $message = ["author" => $handle,
3892 "parent_guid" => $parent_guid,
3893 "text" => implode(";", $signed_parts),
3894 "author_signature" => $signature['signature'],
3895 "parent_author_signature" => ""];
3901 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
3903 * @param array $item The item that will be exported
3904 * @param array $owner the array of the item owner
3905 * @param array $contact Target of the communication
3906 * @param bool $public_batch Is it a public post?
3908 * @return int The result of the transmission
3910 public static function sendRelay($item, $owner, $contact, $public_batch = false)
3912 if ($item["deleted"]) {
3913 return self::sendRetraction($item, $owner, $contact, $public_batch, true);
3914 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3920 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3922 // fetch the original signature
3925 "SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3930 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3936 // Old way - is used by the internal Friendica functions
3937 /// @todo Change all signatur storing functions to the new format
3938 if ($signature['signed_text'] && $signature['signature'] && $signature['signer']) {
3939 $message = self::messageFromSignature($item, $signature);
3941 $msg = json_decode($signature['signed_text'], true);
3944 if (is_array($msg)) {
3945 foreach ($msg as $field => $data) {
3946 if (!$item["deleted"]) {
3947 if ($field == "diaspora_handle") {
3950 if ($field == "target_type") {
3951 $field = "parent_type";
3955 $message[$field] = $data;
3958 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3962 $message["parent_author_signature"] = self::signature($owner, $message);
3964 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3966 return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3970 * @brief Sends a retraction (deletion) of a message, like or comment
3972 * @param array $item The item that will be exported
3973 * @param array $owner the array of the item owner
3974 * @param array $contact Target of the communication
3975 * @param bool $public_batch Is it a public post?
3976 * @param bool $relay Is the retraction transmitted from a relay?
3978 * @return int The result of the transmission
3980 public static function sendRetraction($item, $owner, $contact, $public_batch = false, $relay = false)
3982 $itemaddr = self::handleFromContact($item["contact-id"], $item["author-id"]);
3984 $msg_type = "retraction";
3986 if ($item['id'] == $item['parent']) {
3987 $target_type = "Post";
3988 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3989 $target_type = "Like";
3991 $target_type = "Comment";
3994 $message = ["author" => $itemaddr,
3995 "target_guid" => $item['guid'],
3996 "target_type" => $target_type];
3998 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
4000 return self::buildAndTransmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
4004 * @brief Sends a mail
4006 * @param array $item The item that will be exported
4007 * @param array $owner The owner
4008 * @param array $contact Target of the communication
4010 * @return int The result of the transmission
4012 public static function sendMail($item, $owner, $contact)
4014 $myaddr = self::myHandle($owner);
4017 "SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
4018 intval($item["convid"]),
4019 intval($item["uid"])
4022 if (!DBM::is_result($r)) {
4023 logger("conversation not found.");
4029 "author" => $cnv["creator"],
4030 "guid" => $cnv["guid"],
4031 "subject" => $cnv["subject"],
4032 "created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
4033 "participants" => $cnv["recips"]
4036 $body = BBCode::toMarkdown($item["body"]);
4037 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
4040 "author" => $myaddr,
4041 "guid" => $item["guid"],
4042 "conversation_guid" => $cnv["guid"],
4044 "created_at" => $created,
4047 if ($item["reply"]) {
4052 "author" => $cnv["creator"],
4053 "guid" => $cnv["guid"],
4054 "subject" => $cnv["subject"],
4055 "created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
4056 "participants" => $cnv["recips"],
4059 $type = "conversation";
4062 return self::buildAndTransmit($owner, $contact, $type, $message, false, $item["guid"]);
4066 * @brief Split a name into first name and last name
4068 * @param string $name The name
4070 * @return array The array with "first" and "last"
4072 public static function splitName($name) {
4073 $name = trim($name);
4075 // Is the name longer than 64 characters? Then cut the rest of it.
4076 if (strlen($name) > 64) {
4077 if ((strpos($name, ' ') <= 64) && (strpos($name, ' ') !== false)) {
4078 $name = trim(substr($name, 0, strrpos(substr($name, 0, 65), ' ')));
4080 $name = substr($name, 0, 64);
4084 // Take the first word as first name
4085 $first = ((strpos($name, ' ') ? trim(substr($name, 0, strpos($name, ' '))) : $name));
4086 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4087 if ((strlen($first) < 32) && (strlen($last) < 32)) {
4088 return ['first' => $first, 'last' => $last];
4091 // Take the last word as last name
4092 $first = ((strrpos($name, ' ') ? trim(substr($name, 0, strrpos($name, ' '))) : $name));
4093 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4095 if ((strlen($first) < 32) && (strlen($last) < 32)) {
4096 return ['first' => $first, 'last' => $last];
4099 // Take the first 32 characters if there is no space in the first 32 characters
4100 if ((strpos($name, ' ') > 32) || (strpos($name, ' ') === false)) {
4101 $first = substr($name, 0, 32);
4102 $last = substr($name, 32);
4103 return ['first' => $first, 'last' => $last];
4106 $first = trim(substr($name, 0, strrpos(substr($name, 0, 33), ' ')));
4107 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4109 // Check if the last name is longer than 32 characters
4110 if (strlen($last) > 32) {
4111 if (strpos($last, ' ') <= 32) {
4112 $last = trim(substr($last, 0, strrpos(substr($last, 0, 33), ' ')));
4114 $last = substr($last, 0, 32);
4118 return ['first' => $first, 'last' => $last];
4122 * @brief Create profile data
4124 * @param int $uid The user id
4126 * @return array The profile data
4128 private static function createProfileData($uid)
4131 "SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
4133 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
4134 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
4135 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
4144 $handle = $profile["addr"];
4146 $split_name = self::splitName($profile['name']);
4147 $first = $split_name['first'];
4148 $last = $split_name['last'];
4150 $large = System::baseUrl().'/photo/custom/300/'.$profile['uid'].'.jpg';
4151 $medium = System::baseUrl().'/photo/custom/100/'.$profile['uid'].'.jpg';
4152 $small = System::baseUrl().'/photo/custom/50/' .$profile['uid'].'.jpg';
4153 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
4159 if ($searchable === 'true') {
4162 if ($profile['dob'] && ($profile['dob'] > '0000-00-00')) {
4163 list($year, $month, $day) = sscanf($profile['dob'], '%4d-%2d-%2d');
4167 $dob = DateTimeFormat::utc($year . '-' . $month . '-'. $day, 'Y-m-d');
4170 $about = $profile['about'];
4171 $about = strip_tags(BBCode::convert($about));
4173 $location = Profile::formatLocation($profile);
4175 if ($profile['pub_keywords']) {
4176 $kw = str_replace(',', ' ', $profile['pub_keywords']);
4177 $kw = str_replace(' ', ' ', $kw);
4178 $arr = explode(' ', $profile['pub_keywords']);
4180 for ($x = 0; $x < 5; $x ++) {
4181 if (trim($arr[$x])) {
4182 $tags .= '#'. trim($arr[$x]) .' ';
4187 $tags = trim($tags);
4190 return ["author" => $handle,
4191 "first_name" => $first,
4192 "last_name" => $last,
4193 "image_url" => $large,
4194 "image_url_medium" => $medium,
4195 "image_url_small" => $small,
4197 "gender" => $profile['gender'],
4199 "location" => $location,
4200 "searchable" => $searchable,
4202 "tag_string" => $tags];
4206 * @brief Sends profile data
4208 * @param int $uid The user id
4209 * @param bool $recips optional, default false
4212 public static function sendProfile($uid, $recips = false)
4218 $owner = User::getOwnerDataById($uid);
4225 "SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
4226 AND `uid` = %d AND `rel` != %d",
4227 dbesc(NETWORK_DIASPORA),
4229 intval(CONTACT_IS_SHARING)
4237 $message = self::createProfileData($uid);
4239 foreach ($recips as $recip) {
4240 logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
4241 self::buildAndTransmit($owner, $recip, "profile", $message, false, "", false);
4246 * @brief Stores the signature for likes that are created on our system
4248 * @param array $contact The contact array of the "like"
4249 * @param int $post_id The post id of the "like"
4251 * @return bool Success
4253 public static function storeLikeSignature($contact, $post_id)
4255 // Is the contact the owner? Then fetch the private key
4256 if (!$contact['self'] || ($contact['uid'] == 0)) {
4257 logger("No owner post, so not storing signature", LOGGER_DEBUG);
4261 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
4262 if (!DBM::is_result($r)) {
4266 $contact["uprvkey"] = $r[0]['prvkey'];
4268 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
4269 if (!DBM::is_result($r)) {
4273 if (!in_array($r[0]["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
4277 $message = self::constructLike($r[0], $contact);
4278 if ($message === false) {
4282 $message["author_signature"] = self::signature($contact, $message);
4285 * Now store the signature more flexible to dynamically support new fields.
4286 * This will break Diaspora compatibility with Friendica versions prior to 3.5.
4288 dba::insert('sign', ['iid' => $post_id, 'signed_text' => json_encode($message)]);
4290 logger('Stored diaspora like signature');
4295 * @brief Stores the signature for comments that are created on our system
4297 * @param array $item The item array of the comment
4298 * @param array $contact The contact array of the item owner
4299 * @param string $uprvkey The private key of the sender
4300 * @param int $message_id The message id of the comment
4302 * @return bool Success
4304 public static function storeCommentSignature($item, $contact, $uprvkey, $message_id)
4306 if ($uprvkey == "") {
4307 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
4311 $contact["uprvkey"] = $uprvkey;
4313 $message = self::constructComment($item, $contact);
4314 if ($message === false) {
4318 $message["author_signature"] = self::signature($contact, $message);
4321 * Now store the signature more flexible to dynamically support new fields.
4322 * This will break Diaspora compatibility with Friendica versions prior to 3.5.
4324 dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($message)]);
4326 logger('Stored diaspora comment signature');