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.
10 namespace Friendica\Protocol;
12 use Friendica\Core\Cache;
13 use Friendica\Core\Config;
14 use Friendica\Core\L10n;
15 use Friendica\Core\PConfig;
16 use Friendica\Core\System;
17 use Friendica\Core\Worker;
18 use Friendica\Database\DBM;
19 use Friendica\Model\Contact;
20 use Friendica\Model\GContact;
21 use Friendica\Model\Group;
22 use Friendica\Model\Item;
23 use Friendica\Model\Profile;
24 use Friendica\Model\Queue;
25 use Friendica\Model\User;
26 use Friendica\Network\Probe;
27 use Friendica\Util\Crypto;
28 use Friendica\Util\DateTimeFormat;
29 use Friendica\Util\Network;
30 use Friendica\Util\XML;
34 require_once 'include/dba.php';
35 require_once 'include/items.php';
36 require_once 'include/bb2diaspora.php';
39 * @brief This class contain functions to create and send Diaspora XML files
45 * @brief Return a list of relay servers
47 * This is an experimental Diaspora feature.
49 * @return array of relay servers
51 public static function relayList()
53 $serverdata = Config::get("system", "relay_server");
54 if ($serverdata == "") {
60 $servers = explode(",", $serverdata);
62 foreach ($servers as $server) {
63 $server = trim($server);
64 $addr = "relay@".str_replace("http://", "", normalise_link($server));
65 $batch = $server."/receive/public";
68 "SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' AND `addr` = '%s' AND `nurl` = '%s' LIMIT 1",
71 dbesc(normalise_link($server))
76 "INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
77 VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
78 DateTimeFormat::utcNow(),
82 dbesc(normalise_link($server)),
84 dbesc(NETWORK_DIASPORA),
85 intval(CONTACT_IS_FOLLOWER),
86 dbesc(DateTimeFormat::utcNow()),
87 dbesc(DateTimeFormat::utcNow()),
88 dbesc(DateTimeFormat::utcNow())
91 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
93 $relay[] = $relais[0];
96 $relay[] = $relais[0];
104 * @brief Return a list of participating contacts for a thread
106 * This is used for the participation feature.
107 * One of the parameters is a contact array.
108 * This is done to avoid duplicates.
110 * @param integer $thread The id of the thread
111 * @param array $contacts The previously fetched contacts
113 * @return array of relay servers
115 public static function participantsForThread($thread, $contacts)
117 $r = dba::p("SELECT `contact`.`batch`, `contact`.`id`, `contact`.`name`, `contact`.`network`,
118 `fcontact`.`batch` AS `fbatch`, `fcontact`.`network` AS `fnetwork` FROM `participation`
119 INNER JOIN `contact` ON `contact`.`id` = `participation`.`cid`
120 INNER JOIN `fcontact` ON `fcontact`.`id` = `participation`.`fid`
121 WHERE `participation`.`iid` = ?", $thread);
123 while ($contact = dba::fetch($r)) {
124 if (!empty($contact['fnetwork'])) {
125 $contact['network'] = $contact['fnetwork'];
127 unset($contact['fnetwork']);
129 if (empty($contact['batch']) && !empty($contact['fbatch'])) {
130 $contact['batch'] = $contact['fbatch'];
132 unset($contact['fbatch']);
135 foreach ($contacts as $entry) {
136 if ($entry['batch'] == $contact['batch']) {
142 $contacts[] = $contact;
151 * @brief repairs a signature that was double encoded
153 * The function is unused at the moment. It was copied from the old implementation.
155 * @param string $signature The signature
156 * @param string $handle The handle of the signature owner
157 * @param integer $level This value is only set inside this function to avoid endless loops
159 * @return string the repaired signature
161 private static function repairSignature($signature, $handle = "", $level = 1)
163 if ($signature == "") {
167 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
168 $signature = base64_decode($signature);
169 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
171 // Do a recursive call to be able to fix even multiple levels
173 $signature = self::repairSignature($signature, $handle, ++$level);
181 * @brief verify the envelope and return the verified data
183 * @param string $envelope The magic envelope
185 * @return string verified data
187 private static function verifyMagicEnvelope($envelope)
189 $basedom = XML::parseString($envelope);
191 if (!is_object($basedom)) {
192 logger("Envelope is no XML file");
196 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
198 if (sizeof($children) == 0) {
199 logger("XML has no children");
205 $data = base64url_decode($children->data);
206 $type = $children->data->attributes()->type[0];
208 $encoding = $children->encoding;
210 $alg = $children->alg;
212 $sig = base64url_decode($children->sig);
213 $key_id = $children->sig->attributes()->key_id[0];
215 $handle = base64url_decode($key_id);
218 $b64url_data = base64url_encode($data);
219 $msg = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
221 $signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
223 $key = self::key($handle);
225 $verify = Crypto::rsaVerify($signable_data, $sig, $key);
227 logger('Message did not verify. Discarding.');
235 * @brief encrypts data via AES
237 * @param string $key The AES key
238 * @param string $iv The IV (is used for CBC encoding)
239 * @param string $data The data that is to be encrypted
241 * @return string encrypted data
243 private static function aesEncrypt($key, $iv, $data)
245 return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
249 * @brief decrypts data via AES
251 * @param string $key The AES key
252 * @param string $iv The IV (is used for CBC encoding)
253 * @param string $encrypted The encrypted data
255 * @return string decrypted data
257 private static function aesDecrypt($key, $iv, $encrypted)
259 return openssl_decrypt($encrypted, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
263 * @brief: Decodes incoming Diaspora message in the new format
265 * @param array $importer Array of the importer user
266 * @param string $raw raw post message
269 * 'message' -> decoded Diaspora XML message
270 * 'author' -> author diaspora handle
271 * 'key' -> author public key (converted to pkcs#8)
273 public static function decodeRaw($importer, $raw)
275 $data = json_decode($raw);
277 // Is it a private post? Then decrypt the outer Salmon
278 if (is_object($data)) {
279 $encrypted_aes_key_bundle = base64_decode($data->aes_key);
280 $ciphertext = base64_decode($data->encrypted_magic_envelope);
282 $outer_key_bundle = '';
283 @openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
284 $j_outer_key_bundle = json_decode($outer_key_bundle);
286 if (!is_object($j_outer_key_bundle)) {
287 logger('Outer Salmon did not verify. Discarding.');
288 System::httpExit(400);
291 $outer_iv = base64_decode($j_outer_key_bundle->iv);
292 $outer_key = base64_decode($j_outer_key_bundle->key);
294 $xml = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
299 $basedom = XML::parseString($xml);
301 if (!is_object($basedom)) {
302 logger('Received data does not seem to be an XML. Discarding. '.$xml);
303 System::httpExit(400);
306 $base = $basedom->children(NAMESPACE_SALMON_ME);
308 // Not sure if this cleaning is needed
309 $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
311 // Build the signed data
312 $type = $base->data[0]->attributes()->type[0];
313 $encoding = $base->encoding;
315 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
317 // This is the signature
318 $signature = base64url_decode($base->sig);
320 // Get the senders' public key
321 $key_id = $base->sig[0]->attributes()->key_id[0];
322 $author_addr = base64_decode($key_id);
323 $key = self::key($author_addr);
325 $verify = Crypto::rsaVerify($signed_data, $signature, $key);
327 logger('Message did not verify. Discarding.');
328 System::httpExit(400);
331 return ['message' => (string)base64url_decode($base->data),
332 'author' => unxmlify($author_addr),
333 'key' => (string)$key];
337 * @brief: Decodes incoming Diaspora message in the deprecated format
339 * @param array $importer Array of the importer user
340 * @param string $xml urldecoded Diaspora salmon
343 * 'message' -> decoded Diaspora XML message
344 * 'author' -> author diaspora handle
345 * 'key' -> author public key (converted to pkcs#8)
347 public static function decode($importer, $xml)
350 $basedom = XML::parseString($xml);
352 if (!is_object($basedom)) {
353 logger("XML is not parseable.");
356 $children = $basedom->children('https://joindiaspora.com/protocol');
358 $inner_aes_key = null;
361 if ($children->header) {
363 $author_link = str_replace('acct:', '', $children->header->author_id);
365 // This happens with posts from a relais
367 logger("This is no private post in the old format", LOGGER_DEBUG);
371 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
373 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
374 $ciphertext = base64_decode($encrypted_header->ciphertext);
376 $outer_key_bundle = '';
377 openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
379 $j_outer_key_bundle = json_decode($outer_key_bundle);
381 $outer_iv = base64_decode($j_outer_key_bundle->iv);
382 $outer_key = base64_decode($j_outer_key_bundle->key);
384 $decrypted = self::aesDecrypt($outer_key, $outer_iv, $ciphertext);
386 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
387 $idom = XML::parseString($decrypted);
389 $inner_iv = base64_decode($idom->iv);
390 $inner_aes_key = base64_decode($idom->aes_key);
392 $author_link = str_replace('acct:', '', $idom->author_id);
395 $dom = $basedom->children(NAMESPACE_SALMON_ME);
397 // figure out where in the DOM tree our data is hiding
400 if ($dom->provenance->data) {
401 $base = $dom->provenance;
402 } elseif ($dom->env->data) {
404 } elseif ($dom->data) {
409 logger('unable to locate salmon data in xml');
410 System::httpExit(400);
414 // Stash the signature away for now. We have to find their key or it won't be good for anything.
415 $signature = base64url_decode($base->sig);
419 // strip whitespace so our data element will return to one big base64 blob
420 $data = str_replace([" ", "\t", "\r", "\n"], ["", "", "", ""], $base->data);
423 // stash away some other stuff for later
425 $type = $base->data[0]->attributes()->type[0];
426 $keyhash = $base->sig[0]->attributes()->keyhash[0];
427 $encoding = $base->encoding;
431 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
435 $data = base64url_decode($data);
439 $inner_decrypted = $data;
441 // Decode the encrypted blob
442 $inner_encrypted = base64_decode($data);
443 $inner_decrypted = self::aesDecrypt($inner_aes_key, $inner_iv, $inner_encrypted);
447 logger('Could not retrieve author URI.');
448 System::httpExit(400);
450 // Once we have the author URI, go to the web and try to find their public key
451 // (first this will look it up locally if it is in the fcontact cache)
452 // This will also convert diaspora public key from pkcs#1 to pkcs#8
454 logger('Fetching key for '.$author_link);
455 $key = self::key($author_link);
458 logger('Could not retrieve author key.');
459 System::httpExit(400);
462 $verify = Crypto::rsaVerify($signed_data, $signature, $key);
465 logger('Message did not verify. Discarding.');
466 System::httpExit(400);
469 logger('Message verified.');
471 return ['message' => (string)$inner_decrypted,
472 'author' => unxmlify($author_link),
473 'key' => (string)$key];
478 * @brief Dispatches public messages and find the fitting receivers
480 * @param array $msg The post that will be dispatched
482 * @return int The message id of the generated message, "true" or "false" if there was an error
484 public static function dispatchPublic($msg)
486 $enabled = intval(Config::get("system", "diaspora_enabled"));
488 logger("diaspora is disabled");
492 if (!($postdata = self::validPosting($msg))) {
493 logger("Invalid posting");
497 $fields = $postdata['fields'];
499 // Is it a an action (comment, like, ...) for our own post?
500 if (isset($fields->parent_guid) && !$postdata["relayed"]) {
501 $guid = notags(unxmlify($fields->parent_guid));
502 $importer = self::importerForGuid($guid);
503 if (is_array($importer)) {
504 logger("delivering to origin: ".$importer["name"]);
505 $message_id = self::dispatch($importer, $msg, $fields);
510 // Process item retractions. This has to be done separated from the other stuff,
511 // since retractions for comments could come even from non followers.
512 if (!empty($fields) && in_array($fields->getName(), ['retraction'])) {
513 $target = notags(unxmlify($fields->target_type));
514 if (in_array($target, ["Comment", "Like", "Post", "Reshare", "StatusMessage"])) {
515 logger('processing retraction for '.$target, LOGGER_DEBUG);
516 $importer = ["uid" => 0, "page-flags" => PAGE_FREELOVE];
517 $message_id = self::dispatch($importer, $msg, $fields);
522 // Now distribute it to the followers
524 "SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
525 (SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
526 AND NOT `account_expired` AND NOT `account_removed`",
527 dbesc(NETWORK_DIASPORA),
528 dbesc($msg["author"])
531 if (DBM::is_result($r)) {
532 foreach ($r as $rr) {
533 logger("delivering to: ".$rr["username"]);
534 self::dispatch($rr, $msg, $fields);
536 } elseif (!Config::get('system', 'relay_subscribe', false)) {
537 logger("Unwanted message from ".$msg["author"]." send by ".$_SERVER["REMOTE_ADDR"]." with ".$_SERVER["HTTP_USER_AGENT"].": ".print_r($msg, true), LOGGER_DEBUG);
539 // Use a dummy importer to import the data for the public copy
540 $importer = ["uid" => 0, "page-flags" => PAGE_FREELOVE];
541 $message_id = self::dispatch($importer, $msg, $fields);
548 * @brief Dispatches the different message types to the different functions
550 * @param array $importer Array of the importer user
551 * @param array $msg The post that will be dispatched
552 * @param object $fields SimpleXML object that contains the message
554 * @return int The message id of the generated message, "true" or "false" if there was an error
556 public static function dispatch($importer, $msg, $fields = null)
558 // The sender is the handle of the contact that sent the message.
559 // This will often be different with relayed messages (for example "like" and "comment")
560 $sender = $msg["author"];
562 // This is only needed for private postings since this is already done for public ones before
563 if (is_null($fields)) {
564 if (!($postdata = self::validPosting($msg))) {
565 logger("Invalid posting");
568 $fields = $postdata['fields'];
571 $type = $fields->getName();
573 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
576 case "account_migration":
577 return self::receiveAccountMigration($importer, $fields);
579 case "account_deletion":
580 return self::receiveAccountDeletion($importer, $fields);
583 return self::receiveComment($importer, $sender, $fields, $msg["message"]);
586 return self::receiveContactRequest($importer, $fields);
589 return self::receiveConversation($importer, $msg, $fields);
592 return self::receiveLike($importer, $sender, $fields);
595 return self::receiveMessage($importer, $fields);
597 case "participation":
598 return self::receiveParticipation($importer, $fields);
600 case "photo": // Not implemented
601 return self::receivePhoto($importer, $fields);
603 case "poll_participation": // Not implemented
604 return self::receivePollParticipation($importer, $fields);
607 return self::receiveProfile($importer, $fields);
610 return self::receiveReshare($importer, $fields, $msg["message"]);
613 return self::receiveRetraction($importer, $sender, $fields);
615 case "status_message":
616 return self::receiveStatusMessage($importer, $fields, $msg["message"]);
619 logger("Unknown message type ".$type);
627 * @brief Checks if a posting is valid and fetches the data fields.
629 * This function does not only check the signature.
630 * It also does the conversion between the old and the new diaspora format.
632 * @param array $msg Array with the XML, the sender handle and the sender signature
634 * @return bool|array If the posting is valid then an array with an SimpleXML object is returned
636 private static function validPosting($msg)
638 $data = XML::parseString($msg["message"]);
640 if (!is_object($data)) {
641 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
645 // Is this the new or the old version?
646 if ($data->getName() == "XML") {
648 foreach ($data->post->children() as $child) {
656 $type = $element->getName();
659 logger("Got message type ".$type.": ".$msg["message"], LOGGER_DATA);
661 // All retractions are handled identically from now on.
662 // In the new version there will only be "retraction".
663 if (in_array($type, ["signed_retraction", "relayable_retraction"]))
664 $type = "retraction";
666 if ($type == "request") {
670 $fields = new SimpleXMLElement("<".$type."/>");
673 $author_signature = null;
674 $parent_author_signature = null;
676 foreach ($element->children() as $fieldname => $entry) {
678 // Translation for the old XML structure
679 if ($fieldname == "diaspora_handle") {
680 $fieldname = "author";
682 if ($fieldname == "participant_handles") {
683 $fieldname = "participants";
685 if (in_array($type, ["like", "participation"])) {
686 if ($fieldname == "target_type") {
687 $fieldname = "parent_type";
690 if ($fieldname == "sender_handle") {
691 $fieldname = "author";
693 if ($fieldname == "recipient_handle") {
694 $fieldname = "recipient";
696 if ($fieldname == "root_diaspora_id") {
697 $fieldname = "root_author";
699 if ($type == "status_message") {
700 if ($fieldname == "raw_message") {
704 if ($type == "retraction") {
705 if ($fieldname == "post_guid") {
706 $fieldname = "target_guid";
708 if ($fieldname == "type") {
709 $fieldname = "target_type";
714 if (($fieldname == "author_signature") && ($entry != "")) {
715 $author_signature = base64_decode($entry);
716 } elseif (($fieldname == "parent_author_signature") && ($entry != "")) {
717 $parent_author_signature = base64_decode($entry);
718 } elseif (!in_array($fieldname, ["author_signature", "parent_author_signature", "target_author_signature"])) {
719 if ($signed_data != "") {
723 $signed_data .= $entry;
725 if (!in_array($fieldname, ["parent_author_signature", "target_author_signature"])
726 || ($orig_type == "relayable_retraction")
728 XML::copy($entry, $fields, $fieldname);
732 // This is something that shouldn't happen at all.
733 if (in_array($type, ["status_message", "reshare", "profile"])) {
734 if ($msg["author"] != $fields->author) {
735 logger("Message handle is not the same as envelope sender. Quitting this message.");
740 // Only some message types have signatures. So we quit here for the other types.
741 if (!in_array($type, ["comment", "like"])) {
742 return ["fields" => $fields, "relayed" => false];
744 // No author_signature? This is a must, so we quit.
745 if (!isset($author_signature)) {
746 logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
750 if (isset($parent_author_signature)) {
753 $key = self::key($msg["author"]);
755 if (!Crypto::rsaVerify($signed_data, $parent_author_signature, $key, "sha256")) {
756 logger("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
763 $key = self::key($fields->author);
765 if (!Crypto::rsaVerify($signed_data, $author_signature, $key, "sha256")) {
766 logger("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
769 return ["fields" => $fields, "relayed" => $relayed];
774 * @brief Fetches the public key for a given handle
776 * @param string $handle The handle
778 * @return string The public key
780 private static function key($handle)
782 $handle = strval($handle);
784 logger("Fetching diaspora key for: ".$handle);
786 $r = self::personByHandle($handle);
795 * @brief Fetches data for a given handle
797 * @param string $handle The handle
799 * @return array the queried data
801 public static function personByHandle($handle)
805 $person = dba::selectFirst('fcontact', [], ['network' => NETWORK_DIASPORA, 'addr' => $handle]);
806 if (DBM::is_result($person)) {
807 logger("In cache " . print_r($person, true), LOGGER_DEBUG);
809 // update record occasionally so it doesn't get stale
810 $d = strtotime($person["updated"]." +00:00");
811 if ($d < strtotime("now - 14 days")) {
815 if ($person["guid"] == "") {
820 if (!DBM::is_result($person) || $update) {
821 logger("create or refresh", LOGGER_DEBUG);
822 $r = Probe::uri($handle, NETWORK_DIASPORA);
824 // Note that Friendica contacts will return a "Diaspora person"
825 // if Diaspora connectivity is enabled on their server
826 if ($r && ($r["network"] === NETWORK_DIASPORA)) {
827 self::addFContact($r, $update);
836 * @brief Updates the fcontact table
838 * @param array $arr The fcontact data
839 * @param bool $update Update or insert?
841 * @return string The id of the fcontact entry
843 private static function addFContact($arr, $update = false)
847 "UPDATE `fcontact` SET
861 WHERE `url` = '%s' AND `network` = '%s'",
863 dbesc($arr["photo"]),
864 dbesc($arr["request"]),
866 dbesc(strtolower($arr["addr"])),
868 dbesc($arr["batch"]),
869 dbesc($arr["notify"]),
871 dbesc($arr["confirm"]),
872 dbesc($arr["alias"]),
873 dbesc($arr["pubkey"]),
874 dbesc(DateTimeFormat::utcNow()),
876 dbesc($arr["network"])
880 "INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`, `guid`,
881 `batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
882 VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
885 dbesc($arr["photo"]),
886 dbesc($arr["request"]),
890 dbesc($arr["batch"]),
891 dbesc($arr["notify"]),
893 dbesc($arr["confirm"]),
894 dbesc($arr["network"]),
895 dbesc($arr["alias"]),
896 dbesc($arr["pubkey"]),
897 dbesc(DateTimeFormat::utcNow())
905 * @brief get a handle (user@domain.tld) from a given contact id or gcontact id
907 * @param int $contact_id The id in the contact table
908 * @param int $gcontact_id The id in the gcontact table
910 * @return string the handle
912 public static function handleFromContact($contact_id, $gcontact_id = 0)
916 logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
918 if ($gcontact_id != 0) {
920 "SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
924 if (DBM::is_result($r)) {
925 return strtolower($r[0]["addr"]);
930 "SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
934 if (DBM::is_result($r)) {
937 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
939 if ($contact['addr'] != "") {
940 $handle = $contact['addr'];
942 $baseurl_start = strpos($contact['url'], '://') + 3;
943 // allows installations in a subdirectory--not sure how Diaspora will handle
944 $baseurl_length = strpos($contact['url'], '/profile') - $baseurl_start;
945 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
946 $handle = $contact['nick'].'@'.$baseurl;
950 return strtolower($handle);
954 * @brief get a url (scheme://domain.tld/u/user) from a given Diaspora*
957 * @param mixed $fcontact_guid Hexadecimal string guid
959 * @return string the contact url or null
961 public static function urlFromContactGuid($fcontact_guid)
963 logger("fcontact guid is ".$fcontact_guid, LOGGER_DEBUG);
966 "SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
967 dbesc(NETWORK_DIASPORA),
968 dbesc($fcontact_guid)
971 if (DBM::is_result($r)) {
979 * @brief Get a contact id for a given handle
981 * @todo Move to Friendica\Model\Contact
983 * @param int $uid The user id
984 * @param string $handle The handle in the format user@domain.tld
986 * @return int Contact id
988 private static function contactByHandle($uid, $handle)
990 // First do a direct search on the contact table
992 "SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
997 if (DBM::is_result($r)) {
1001 * We haven't found it?
1002 * We use another function for it that will possibly create a contact entry.
1004 $cid = Contact::getIdForURL($handle, $uid);
1007 /// @TODO Contact retrieval should be encapsulated into an "entity" class like `Contact`
1008 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
1010 if (DBM::is_result($r)) {
1016 $handle_parts = explode("@", $handle);
1017 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
1019 "SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
1020 dbesc(NETWORK_DFRN),
1024 if (DBM::is_result($r)) {
1028 logger("Haven't found contact for user ".$uid." and handle ".$handle, LOGGER_DEBUG);
1033 * @brief Check if posting is allowed for this contact
1035 * @param array $importer Array of the importer user
1036 * @param array $contact The contact that is checked
1037 * @param bool $is_comment Is the check for a comment?
1039 * @return bool is the contact allowed to post?
1041 private static function postAllow($importer, $contact, $is_comment = false)
1044 * Perhaps we were already sharing with this person. Now they're sharing with us.
1045 * That makes us friends.
1046 * Normally this should have handled by getting a request - but this could get lost
1048 // It is deactivated by now, due to side effects. See issue https://github.com/friendica/friendica/pull/4033
1049 // It is not removed by now. Possibly the code is needed?
1050 //if (!$is_comment && $contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1053 // array('rel' => CONTACT_IS_FRIEND, 'writable' => true),
1054 // array('id' => $contact["id"], 'uid' => $contact["uid"])
1057 // $contact["rel"] = CONTACT_IS_FRIEND;
1058 // logger("defining user ".$contact["nick"]." as friend");
1061 // We don't seem to like that person
1062 if ($contact["blocked"] || $contact["readonly"]) {
1063 // Maybe blocked, don't accept.
1065 // We are following this person?
1066 } elseif (($contact["rel"] == CONTACT_IS_SHARING) || ($contact["rel"] == CONTACT_IS_FRIEND)) {
1067 // Yes, then it is fine.
1069 // Is it a post to a community?
1070 } elseif (($contact["rel"] == CONTACT_IS_FOLLOWER) && ($importer["page-flags"] == PAGE_COMMUNITY)) {
1073 // Is the message a global user or a comment?
1074 } elseif (($importer["uid"] == 0) || $is_comment) {
1075 // Messages for the global users and comments are always accepted
1083 * @brief Fetches the contact id for a handle and checks if posting is allowed
1085 * @param array $importer Array of the importer user
1086 * @param string $handle The checked handle in the format user@domain.tld
1087 * @param bool $is_comment Is the check for a comment?
1089 * @return array The contact data
1091 private static function allowedContactByHandle($importer, $handle, $is_comment = false)
1093 $contact = self::contactByHandle($importer["uid"], $handle);
1095 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
1096 // If a contact isn't found, we accept it anyway if it is a comment
1104 if (!self::postAllow($importer, $contact, $is_comment)) {
1105 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
1112 * @brief Does the message already exists on the system?
1114 * @param int $uid The user id
1115 * @param string $guid The guid of the message
1117 * @return int|bool message id if the message already was stored into the system - or false.
1119 private static function messageExists($uid, $guid)
1122 "SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1127 if (DBM::is_result($r)) {
1128 logger("message ".$guid." already exists for user ".$uid);
1136 * @brief Checks for links to posts in a message
1138 * @param array $item The item array
1141 private static function fetchGuid($item)
1143 $expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
1144 preg_replace_callback(
1146 function ($match) use ($item) {
1147 self::fetchGuidSub($match, $item);
1152 preg_replace_callback(
1153 "&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1154 function ($match) use ($item) {
1155 self::fetchGuidSub($match, $item);
1162 * @brief Checks for relative /people/* links in an item body to match local
1163 * contacts or prepends the remote host taken from the author link.
1165 * @param string $body The item body to replace links from
1166 * @param string $author_link The author link for missing local contact fallback
1168 * @return string the replaced string
1170 public static function replacePeopleGuid($body, $author_link)
1172 $return = preg_replace_callback(
1173 "&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
1174 function ($match) use ($author_link) {
1176 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
1177 // 1 => '0123456789abcdef'
1179 $handle = self::urlFromContactGuid($match[1]);
1182 $return = '@[url='.$handle.']'.$match[2].'[/url]';
1184 // No local match, restoring absolute remote URL from author scheme and host
1185 $author_url = parse_url($author_link);
1186 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
1198 * @brief sub function of "fetchGuid" which checks for links in messages
1200 * @param array $match array containing a link that has to be checked for a message link
1201 * @param array $item The item array
1204 private static function fetchGuidSub($match, $item)
1206 if (!self::storeByGuid($match[1], $item["author-link"])) {
1207 self::storeByGuid($match[1], $item["owner-link"]);
1212 * @brief Fetches an item with a given guid from a given server
1214 * @param string $guid the message guid
1215 * @param string $server The server address
1216 * @param int $uid The user id of the user
1218 * @return int the message id of the stored message or false
1220 private static function storeByGuid($guid, $server, $uid = 0)
1222 $serverparts = parse_url($server);
1223 $server = $serverparts["scheme"]."://".$serverparts["host"];
1225 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
1227 $msg = self::message($guid, $server);
1233 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
1235 // Now call the dispatcher
1236 return self::dispatchPublic($msg);
1240 * @brief Fetches a message from a server
1242 * @param string $guid message guid
1243 * @param string $server The url of the server
1244 * @param int $level Endless loop prevention
1247 * 'message' => The message XML
1248 * 'author' => The author handle
1249 * 'key' => The public key of the author
1251 private static function message($guid, $server, $level = 0)
1257 // This will work for new Diaspora servers and Friendica servers from 3.5
1258 $source_url = $server."/fetch/post/".urlencode($guid);
1260 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
1262 $envelope = Network::fetchUrl($source_url);
1264 logger("Envelope was fetched.", LOGGER_DEBUG);
1265 $x = self::verifyMagicEnvelope($envelope);
1267 logger("Envelope could not be verified.", LOGGER_DEBUG);
1269 logger("Envelope was verified.", LOGGER_DEBUG);
1275 // This will work for older Diaspora and Friendica servers
1277 $source_url = $server."/p/".urlencode($guid).".xml";
1278 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
1280 $x = Network::fetchUrl($source_url);
1286 $source_xml = XML::parseString($x);
1288 if (!is_object($source_xml)) {
1292 if ($source_xml->post->reshare) {
1293 // Reshare of a reshare - old Diaspora version
1294 logger("Message is a reshare", LOGGER_DEBUG);
1295 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
1296 } elseif ($source_xml->getName() == "reshare") {
1297 // Reshare of a reshare - new Diaspora version
1298 logger("Message is a new reshare", LOGGER_DEBUG);
1299 return self::message($source_xml->root_guid, $server, ++$level);
1304 // Fetch the author - for the old and the new Diaspora version
1305 if ($source_xml->post->status_message->diaspora_handle) {
1306 $author = (string)$source_xml->post->status_message->diaspora_handle;
1307 } elseif ($source_xml->author && ($source_xml->getName() == "status_message")) {
1308 $author = (string)$source_xml->author;
1311 // If this isn't a "status_message" then quit
1313 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
1317 $msg = ["message" => $x, "author" => $author];
1319 $msg["key"] = self::key($msg["author"]);
1325 * @brief Fetches the item record of a given guid
1327 * @param int $uid The user id
1328 * @param string $guid message guid
1329 * @param string $author The handle of the item
1330 * @param array $contact The contact of the item owner
1332 * @return array the item record
1334 private static function parentItem($uid, $guid, $author, $contact)
1337 "SELECT `id`, `parent`, `body`, `wall`, `uri`, `guid`, `private`, `origin`,
1338 `author-name`, `author-link`, `author-avatar`,
1339 `owner-name`, `owner-link`, `owner-avatar`
1340 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1346 $result = self::storeByGuid($guid, $contact["url"], $uid);
1349 $person = self::personByHandle($author);
1350 $result = self::storeByGuid($guid, $person["url"], $uid);
1354 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
1357 "SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1358 `author-name`, `author-link`, `author-avatar`,
1359 `owner-name`, `owner-link`, `owner-avatar`
1360 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1368 logger("parent item not found: parent: ".$guid." - user: ".$uid);
1371 logger("parent item found: parent: ".$guid." - user: ".$uid);
1377 * @brief returns contact details
1379 * @param array $def_contact The default contact if the person isn't found
1380 * @param array $person The record of the person
1381 * @param int $uid The user id
1384 * 'cid' => contact id
1385 * 'network' => network type
1387 private static function authorContactByUrl($def_contact, $person, $uid)
1389 $condition = ['nurl' => normalise_link($person["url"]), 'uid' => $uid];
1390 $contact = dba::selectFirst('contact', ['id', 'network'], $condition);
1391 if (DBM::is_result($contact)) {
1392 $cid = $contact["id"];
1393 $network = $contact["network"];
1395 $cid = $def_contact["id"];
1396 $network = NETWORK_DIASPORA;
1399 return ["cid" => $cid, "network" => $network];
1403 * @brief Is the profile a hubzilla profile?
1405 * @param string $url The profile link
1407 * @return bool is it a hubzilla server?
1409 public static function isRedmatrix($url)
1411 return(strstr($url, "/channel/"));
1415 * @brief Generate a post link with a given handle and message guid
1417 * @param string $addr The user handle
1418 * @param string $guid message guid
1419 * @param string $parent_guid optional parent guid
1421 * @return string the post link
1423 private static function plink($addr, $guid, $parent_guid = '')
1425 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
1428 if (!DBM::is_result($r)) {
1429 if ($parent_guid != '') {
1430 return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $parent_guid . "#" . $guid;
1432 return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $guid;
1436 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
1437 // So we try another way as well.
1438 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
1439 if (DBM::is_result($s)) {
1440 $r[0]["network"] = $s[0]["network"];
1443 if ($r[0]["network"] == NETWORK_DFRN) {
1444 return str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/");
1447 if (self::isRedmatrix($r[0]["url"])) {
1448 return $r[0]["url"]."/?f=&mid=".$guid;
1451 if ($parent_guid != '') {
1452 return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $parent_guid . "#" . $guid;
1454 return "https://".substr($addr, strpos($addr, "@") + 1) . "/posts/" . $guid;
1459 * @brief Receives account migration
1461 * @param array $importer Array of the importer user
1462 * @param object $data The message object
1464 * @return bool Success
1466 private static function receiveAccountMigration($importer, $data)
1468 $old_handle = notags(unxmlify($data->author));
1469 $new_handle = notags(unxmlify($data->profile->author));
1470 $signature = notags(unxmlify($data->signature));
1472 $contact = self::contactByHandle($importer["uid"], $old_handle);
1474 logger("cannot find contact for sender: ".$old_handle." and user ".$importer["uid"]);
1478 logger("Got migration for ".$old_handle.", to ".$new_handle." with user ".$importer["uid"]);
1481 $signed_text = 'AccountMigration:'.$old_handle.':'.$new_handle;
1482 $key = self::key($old_handle);
1483 if (!Crypto::rsaVerify($signed_text, $signature, $key, "sha256")) {
1484 logger('No valid signature for migration.');
1488 // Update the profile
1489 self::receiveProfile($importer, $data->profile);
1491 // change the technical stuff in contact and gcontact
1492 $data = Probe::uri($new_handle);
1493 if ($data['network'] == NETWORK_PHANTOM) {
1494 logger('Account for '.$new_handle." couldn't be probed.");
1498 $fields = ['url' => $data['url'], 'nurl' => normalise_link($data['url']),
1499 'name' => $data['name'], 'nick' => $data['nick'],
1500 'addr' => $data['addr'], 'batch' => $data['batch'],
1501 'notify' => $data['notify'], 'poll' => $data['poll'],
1502 'network' => $data['network']];
1504 dba::update('contact', $fields, ['addr' => $old_handle]);
1506 $fields = ['url' => $data['url'], 'nurl' => normalise_link($data['url']),
1507 'name' => $data['name'], 'nick' => $data['nick'],
1508 'addr' => $data['addr'], 'connect' => $data['addr'],
1509 'notify' => $data['notify'], 'photo' => $data['photo'],
1510 'server_url' => $data['baseurl'], 'network' => $data['network']];
1512 dba::update('gcontact', $fields, ['addr' => $old_handle]);
1514 logger('Contacts are updated.');
1517 /// @todo This is an extreme performance killer
1519 'owner-link' => [$contact["url"], $data["url"]],
1520 'author-link' => [$contact["url"], $data["url"]],
1522 foreach ($fields as $n => $f) {
1524 "SELECT `id` FROM `item` WHERE `%s` = '%s' AND `uid` = %d LIMIT 1",
1527 intval($importer["uid"])
1530 if (DBM::is_result($r)) {
1532 "UPDATE `item` SET `%s` = '%s' WHERE `%s` = '%s' AND `uid` = %d",
1537 intval($importer["uid"])
1546 logger('Items are updated.');
1552 * @brief Processes an account deletion
1554 * @param array $importer Array of the importer user
1555 * @param object $data The message object
1557 * @return bool Success
1559 private static function receiveAccountDeletion($importer, $data)
1561 /// @todo Account deletion should remove the contact from the global contacts as well
1563 $author = notags(unxmlify($data->author));
1565 $contact = self::contactByHandle($importer["uid"], $author);
1567 logger("cannot find contact for author: ".$author);
1571 // We now remove the contact
1572 Contact::remove($contact["id"]);
1577 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1579 * @param string $author Author handle
1580 * @param string $guid Message guid
1581 * @param boolean $onlyfound Only return uri when found in the database
1583 * @return string The constructed uri or the one from our database
1585 private static function getUriFromGuid($author, $guid, $onlyfound = false)
1587 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1588 if (DBM::is_result($r)) {
1589 return $r[0]["uri"];
1590 } elseif (!$onlyfound) {
1591 return $author.":".$guid;
1598 * @brief Fetch the guid from our database with a given uri
1600 * @param string $uri Message uri
1601 * @param string $uid Author handle
1603 * @return string The post guid
1605 private static function getGuidFromUri($uri, $uid)
1607 $r = q("SELECT `guid` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($uri), intval($uid));
1608 if (DBM::is_result($r)) {
1609 return $r[0]["guid"];
1616 * @brief Find the best importer for a comment, like, ...
1618 * @param string $guid The guid of the item
1620 * @return array|boolean the origin owner of that post - or false
1622 private static function importerForGuid($guid)
1624 $item = dba::fetch_first("SELECT `uid` FROM `item` WHERE `origin` AND `guid` = ? LIMIT 1", $guid);
1626 if (DBM::is_result($item)) {
1627 logger("Found user ".$item['uid']." as owner of item ".$guid, LOGGER_DEBUG);
1628 $contact = dba::fetch_first("SELECT * FROM `contact` WHERE `self` AND `uid` = ?", $item['uid']);
1629 if (DBM::is_result($contact)) {
1637 * @brief Processes an incoming comment
1639 * @param array $importer Array of the importer user
1640 * @param string $sender The sender of the message
1641 * @param object $data The message object
1642 * @param string $xml The original XML of the message
1644 * @return int The message id of the generated comment or "false" if there was an error
1646 private static function receiveComment($importer, $sender, $data, $xml)
1648 $author = notags(unxmlify($data->author));
1649 $guid = notags(unxmlify($data->guid));
1650 $parent_guid = notags(unxmlify($data->parent_guid));
1651 $text = unxmlify($data->text);
1653 if (isset($data->created_at)) {
1654 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
1656 $created_at = DateTimeFormat::utcNow();
1659 if (isset($data->thread_parent_guid)) {
1660 $thread_parent_guid = notags(unxmlify($data->thread_parent_guid));
1661 $thr_uri = self::getUriFromGuid("", $thread_parent_guid, true);
1666 $contact = self::allowedContactByHandle($importer, $sender, true);
1671 $message_id = self::messageExists($importer["uid"], $guid);
1676 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
1677 if (!$parent_item) {
1681 $person = self::personByHandle($author);
1682 if (!is_array($person)) {
1683 logger("unable to find author details");
1687 // Fetch the contact id - if we know this contact
1688 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
1692 $datarray["uid"] = $importer["uid"];
1693 $datarray["contact-id"] = $author_contact["cid"];
1694 $datarray["network"] = $author_contact["network"];
1696 $datarray["author-name"] = $person["name"];
1697 $datarray["author-link"] = $person["url"];
1698 $datarray["author-avatar"] = ((x($person, "thumb")) ? $person["thumb"] : $person["photo"]);
1700 $datarray["owner-name"] = $contact["name"];
1701 $datarray["owner-link"] = $contact["url"];
1702 $datarray["owner-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
1704 $datarray["guid"] = $guid;
1705 $datarray["uri"] = self::getUriFromGuid($author, $guid);
1707 $datarray["type"] = "remote-comment";
1708 $datarray["verb"] = ACTIVITY_POST;
1709 $datarray["gravity"] = GRAVITY_COMMENT;
1711 if ($thr_uri != "") {
1712 $datarray["parent-uri"] = $thr_uri;
1714 $datarray["parent-uri"] = $parent_item["uri"];
1717 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1719 $datarray["protocol"] = PROTOCOL_DIASPORA;
1720 $datarray["source"] = $xml;
1722 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1724 $datarray["plink"] = self::plink($author, $guid, $parent_item['guid']);
1726 $body = diaspora2bb($text);
1728 $datarray["body"] = self::replacePeopleGuid($body, $person["url"]);
1730 self::fetchGuid($datarray);
1732 $message_id = Item::insert($datarray);
1734 if ($message_id <= 0) {
1739 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1742 // If we are the origin of the parent we store the original data and notify our followers
1743 if ($message_id && $parent_item["origin"]) {
1744 // Formerly we stored the signed text, the signature and the author in different fields.
1745 // We now store the raw data so that we are more flexible.
1746 dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($data)]);
1749 Worker::add(PRIORITY_HIGH, "Notifier", "comment-import", $message_id);
1756 * @brief processes and stores private messages
1758 * @param array $importer Array of the importer user
1759 * @param array $contact The contact of the message
1760 * @param object $data The message object
1761 * @param array $msg Array of the processed message, author handle and key
1762 * @param object $mesg The private message
1763 * @param array $conversation The conversation record to which this message belongs
1765 * @return bool "true" if it was successful
1767 private static function receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation)
1769 $author = notags(unxmlify($data->author));
1770 $guid = notags(unxmlify($data->guid));
1771 $subject = notags(unxmlify($data->subject));
1773 // "diaspora_handle" is the element name from the old version
1774 // "author" is the element name from the new version
1775 if ($mesg->author) {
1776 $msg_author = notags(unxmlify($mesg->author));
1777 } elseif ($mesg->diaspora_handle) {
1778 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1783 $msg_guid = notags(unxmlify($mesg->guid));
1784 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1785 $msg_text = unxmlify($mesg->text);
1786 $msg_created_at = DateTimeFormat::utc(notags(unxmlify($mesg->created_at)));
1788 if ($msg_conversation_guid != $guid) {
1789 logger("message conversation guid does not belong to the current conversation.");
1793 $body = diaspora2bb($msg_text);
1794 $message_uri = $msg_author.":".$msg_guid;
1796 $person = self::personByHandle($msg_author);
1801 "SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
1803 intval($importer["uid"])
1805 if (DBM::is_result($r)) {
1806 logger("duplicate message already delivered.", LOGGER_DEBUG);
1811 "INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1812 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1813 intval($importer["uid"]),
1815 intval($conversation["id"]),
1816 dbesc($person["name"]),
1817 dbesc($person["photo"]),
1818 dbesc($person["url"]),
1819 intval($contact["id"]),
1824 dbesc($message_uri),
1825 dbesc($author.":".$guid),
1826 dbesc($msg_created_at)
1831 dba::update('conv', ['updated' => DateTimeFormat::utcNow()], ['id' => $conversation["id"]]);
1835 "type" => NOTIFY_MAIL,
1836 "notify_flags" => $importer["notify-flags"],
1837 "language" => $importer["language"],
1838 "to_name" => $importer["username"],
1839 "to_email" => $importer["email"],
1840 "uid" =>$importer["uid"],
1841 "item" => ["subject" => $subject, "body" => $body],
1842 "source_name" => $person["name"],
1843 "source_link" => $person["url"],
1844 "source_photo" => $person["thumb"],
1845 "verb" => ACTIVITY_POST,
1852 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1854 * @param array $importer Array of the importer user
1855 * @param array $msg Array of the processed message, author handle and key
1856 * @param object $data The message object
1858 * @return bool Success
1860 private static function receiveConversation($importer, $msg, $data)
1862 $author = notags(unxmlify($data->author));
1863 $guid = notags(unxmlify($data->guid));
1864 $subject = notags(unxmlify($data->subject));
1865 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
1866 $participants = notags(unxmlify($data->participants));
1868 $messages = $data->message;
1870 if (!count($messages)) {
1871 logger("empty conversation");
1875 $contact = self::allowedContactByHandle($importer, $msg["author"], true);
1880 $conversation = null;
1883 "SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1884 intval($importer["uid"]),
1888 $conversation = $c[0];
1891 "INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1892 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1893 intval($importer["uid"]),
1897 dbesc(DateTimeFormat::utcNow()),
1899 dbesc($participants)
1903 "SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1904 intval($importer["uid"]),
1910 $conversation = $c[0];
1913 if (!$conversation) {
1914 logger("unable to create conversation.");
1918 foreach ($messages as $mesg) {
1919 self::receiveConversationMessage($importer, $contact, $data, $msg, $mesg, $conversation);
1926 * @brief Creates the body for a "like" message
1928 * @param array $contact The contact that send us the "like"
1929 * @param array $parent_item The item array of the parent item
1930 * @param string $guid message guid
1932 * @return string the body
1934 private static function constructLikeBody($contact, $parent_item, $guid)
1936 $bodyverb = L10n::t('%1$s likes %2$s\'s %3$s');
1938 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1939 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1940 $plink = "[url=".System::baseUrl()."/display/".urlencode($guid)."]".L10n::t("status")."[/url]";
1942 return sprintf($bodyverb, $ulink, $alink, $plink);
1946 * @brief Creates a XML object for a "like"
1948 * @param array $importer Array of the importer user
1949 * @param array $parent_item The item array of the parent item
1951 * @return string The XML
1953 private static function constructLikeObject($importer, $parent_item)
1955 $objtype = ACTIVITY_OBJ_NOTE;
1956 $link = '<link rel="alternate" type="text/html" href="'.System::baseUrl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1957 $parent_body = $parent_item["body"];
1959 $xmldata = ["object" => ["type" => $objtype,
1961 "id" => $parent_item["uri"],
1964 "content" => $parent_body]];
1966 return XML::fromArray($xmldata, $xml, true);
1970 * @brief Processes "like" messages
1972 * @param array $importer Array of the importer user
1973 * @param string $sender The sender of the message
1974 * @param object $data The message object
1976 * @return int The message id of the generated like or "false" if there was an error
1978 private static function receiveLike($importer, $sender, $data)
1980 $author = notags(unxmlify($data->author));
1981 $guid = notags(unxmlify($data->guid));
1982 $parent_guid = notags(unxmlify($data->parent_guid));
1983 $parent_type = notags(unxmlify($data->parent_type));
1984 $positive = notags(unxmlify($data->positive));
1986 // likes on comments aren't supported by Diaspora - only on posts
1987 // But maybe this will be supported in the future, so we will accept it.
1988 if (!in_array($parent_type, ["Post", "Comment"])) {
1992 $contact = self::allowedContactByHandle($importer, $sender, true);
1997 $message_id = self::messageExists($importer["uid"], $guid);
2002 $parent_item = self::parentItem($importer["uid"], $parent_guid, $author, $contact);
2003 if (!$parent_item) {
2007 $person = self::personByHandle($author);
2008 if (!is_array($person)) {
2009 logger("unable to find author details");
2013 // Fetch the contact id - if we know this contact
2014 $author_contact = self::authorContactByUrl($contact, $person, $importer["uid"]);
2016 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
2017 // We would accept this anyhow.
2018 if ($positive == "true") {
2019 $verb = ACTIVITY_LIKE;
2021 $verb = ACTIVITY_DISLIKE;
2026 $datarray["protocol"] = PROTOCOL_DIASPORA;
2028 $datarray["uid"] = $importer["uid"];
2029 $datarray["contact-id"] = $author_contact["cid"];
2030 $datarray["network"] = $author_contact["network"];
2032 $datarray["author-name"] = $person["name"];
2033 $datarray["author-link"] = $person["url"];
2034 $datarray["author-avatar"] = ((x($person, "thumb")) ? $person["thumb"] : $person["photo"]);
2036 $datarray["owner-name"] = $contact["name"];
2037 $datarray["owner-link"] = $contact["url"];
2038 $datarray["owner-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
2040 $datarray["guid"] = $guid;
2041 $datarray["uri"] = self::getUriFromGuid($author, $guid);
2043 $datarray["type"] = "activity";
2044 $datarray["verb"] = $verb;
2045 $datarray["gravity"] = GRAVITY_LIKE;
2046 $datarray["parent-uri"] = $parent_item["uri"];
2048 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2049 $datarray["object"] = self::constructLikeObject($importer, $parent_item);
2051 $datarray["body"] = self::constructLikeBody($contact, $parent_item, $guid);
2053 $message_id = Item::insert($datarray);
2055 if ($message_id <= 0) {
2060 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2063 // like on comments have the comment as parent. So we need to fetch the toplevel parent
2064 if ($parent_item["id"] != $parent_item["parent"]) {
2065 $toplevel = dba::selectFirst('item', ['origin'], ['id' => $parent_item["parent"]]);
2066 $origin = $toplevel["origin"];
2068 $origin = $parent_item["origin"];
2071 // If we are the origin of the parent we store the original data and notify our followers
2072 if ($message_id && $origin) {
2073 // Formerly we stored the signed text, the signature and the author in different fields.
2074 // We now store the raw data so that we are more flexible.
2075 dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($data)]);
2078 Worker::add(PRIORITY_HIGH, "Notifier", "comment-import", $message_id);
2085 * @brief Processes private messages
2087 * @param array $importer Array of the importer user
2088 * @param object $data The message object
2090 * @return bool Success?
2092 private static function receiveMessage($importer, $data)
2094 $author = notags(unxmlify($data->author));
2095 $guid = notags(unxmlify($data->guid));
2096 $conversation_guid = notags(unxmlify($data->conversation_guid));
2097 $text = unxmlify($data->text);
2098 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
2100 $contact = self::allowedContactByHandle($importer, $author, true);
2105 $conversation = null;
2108 "SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
2109 intval($importer["uid"]),
2110 dbesc($conversation_guid)
2113 $conversation = $c[0];
2115 logger("conversation not available.");
2119 $message_uri = $author.":".$guid;
2121 $person = self::personByHandle($author);
2123 logger("unable to find author details");
2127 $body = diaspora2bb($text);
2129 $body = self::replacePeopleGuid($body, $person["url"]);
2134 "SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
2136 intval($importer["uid"])
2138 if (DBM::is_result($r)) {
2139 logger("duplicate message already delivered.", LOGGER_DEBUG);
2144 "INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
2145 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
2146 intval($importer["uid"]),
2148 intval($conversation["id"]),
2149 dbesc($person["name"]),
2150 dbesc($person["photo"]),
2151 dbesc($person["url"]),
2152 intval($contact["id"]),
2153 dbesc($conversation["subject"]),
2157 dbesc($message_uri),
2158 dbesc($author.":".$conversation["guid"]),
2164 dba::update('conv', ['updated' => DateTimeFormat::utcNow()], ['id' => $conversation["id"]]);
2169 * @brief Processes participations - unsupported by now
2171 * @param array $importer Array of the importer user
2172 * @param object $data The message object
2174 * @return bool always true
2176 private static function receiveParticipation($importer, $data)
2178 $author = strtolower(notags(unxmlify($data->author)));
2179 $parent_guid = notags(unxmlify($data->parent_guid));
2181 $contact_id = Contact::getIdForURL($author);
2183 logger('Contact not found: '.$author);
2187 $person = self::personByHandle($author);
2188 if (!is_array($person)) {
2189 logger("Person not found: ".$author);
2193 $item = dba::selectFirst('item', ['id'], ['guid' => $parent_guid, 'origin' => true, 'private' => false]);
2194 if (!DBM::is_result($item)) {
2195 logger('Item not found, no origin or private: '.$parent_guid);
2199 $author_parts = explode('@', $author);
2200 if (isset($author_parts[1])) {
2201 $server = $author_parts[1];
2203 // Should never happen
2207 logger('Received participation for ID: '.$item['id'].' - Contact: '.$contact_id.' - Server: '.$server, LOGGER_DEBUG);
2208 dba::insert('participation', ['iid' => $item['id'], 'cid' => $contact_id, 'fid' => $person['id'], 'server' => $server]);
2210 // Send all existing comments and likes to the requesting server
2211 $comments = dba::p("SELECT `item`.`id`, `item`.`verb`, `contact`.`self`
2213 INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
2214 WHERE `item`.`parent` = ? AND `item`.`id` != `item`.`parent`", $item['id']);
2215 while ($comment = dba::fetch($comments)) {
2216 if ($comment['verb'] == ACTIVITY_POST) {
2217 $cmd = $comment['self'] ? 'comment-new' : 'comment-import';
2219 $cmd = $comment['self'] ? 'like' : 'comment-import';
2221 logger("Send ".$cmd." for item ".$comment['id']." to contact ".$contact_id, LOGGER_DEBUG);
2222 Worker::add(PRIORITY_HIGH, 'Delivery', $cmd, $comment['id'], $contact_id);
2224 dba::close($comments);
2230 * @brief Processes photos - unneeded
2232 * @param array $importer Array of the importer user
2233 * @param object $data The message object
2235 * @return bool always true
2237 private static function receivePhoto($importer, $data)
2239 // There doesn't seem to be a reason for this function,
2240 // since the photo data is transmitted in the status message as well
2245 * @brief Processes poll participations - unssupported
2247 * @param array $importer Array of the importer user
2248 * @param object $data The message object
2250 * @return bool always true
2252 private static function receivePollParticipation($importer, $data)
2254 // We don't support polls by now
2259 * @brief Processes incoming profile updates
2261 * @param array $importer Array of the importer user
2262 * @param object $data The message object
2264 * @return bool Success
2266 private static function receiveProfile($importer, $data)
2268 $author = strtolower(notags(unxmlify($data->author)));
2270 $contact = self::contactByHandle($importer["uid"], $author);
2275 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
2276 $image_url = unxmlify($data->image_url);
2277 $birthday = unxmlify($data->birthday);
2278 $gender = unxmlify($data->gender);
2279 $about = diaspora2bb(unxmlify($data->bio));
2280 $location = diaspora2bb(unxmlify($data->location));
2281 $searchable = (unxmlify($data->searchable) == "true");
2282 $nsfw = (unxmlify($data->nsfw) == "true");
2283 $tags = unxmlify($data->tag_string);
2285 $tags = explode("#", $tags);
2288 foreach ($tags as $tag) {
2289 $tag = trim(strtolower($tag));
2295 $keywords = implode(", ", $keywords);
2297 $handle_parts = explode("@", $author);
2298 $nick = $handle_parts[0];
2301 $name = $handle_parts[0];
2304 if (preg_match("|^https?://|", $image_url) === 0) {
2305 $image_url = "http://".$handle_parts[1].$image_url;
2308 Contact::updateAvatar($image_url, $importer["uid"], $contact["id"]);
2310 // Generic birthday. We don't know the timezone. The year is irrelevant.
2312 $birthday = str_replace("1000", "1901", $birthday);
2314 if ($birthday != "") {
2315 $birthday = DateTimeFormat::utc($birthday, "Y-m-d");
2318 // this is to prevent multiple birthday notifications in a single year
2319 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
2321 if (substr($birthday, 5) === substr($contact["bd"], 5)) {
2322 $birthday = $contact["bd"];
2326 "UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
2327 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
2331 dbesc(DateTimeFormat::utcNow()),
2337 intval($contact["id"]),
2338 intval($importer["uid"])
2341 $gcontact = ["url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
2342 "photo" => $image_url, "name" => $name, "location" => $location,
2343 "about" => $about, "birthday" => $birthday, "gender" => $gender,
2344 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
2345 "hide" => !$searchable, "nsfw" => $nsfw];
2347 $gcid = GContact::update($gcontact);
2349 GContact::link($gcid, $importer["uid"], $contact["id"]);
2351 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
2357 * @brief Processes incoming friend requests
2359 * @param array $importer Array of the importer user
2360 * @param array $contact The contact that send the request
2363 private static function receiveRequestMakeFriend($importer, $contact)
2367 if ($contact["rel"] == CONTACT_IS_SHARING) {
2370 ['rel' => CONTACT_IS_FRIEND, 'writable' => true],
2371 ['id' => $contact["id"], 'uid' => $importer["uid"]]
2374 // send notification
2377 "SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
2378 intval($importer["uid"])
2381 if ($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(PConfig::get($importer["uid"], "system", "post_newfriend"))) {
2383 "SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
2384 intval($importer["uid"])
2387 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
2389 if ($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
2391 $arr["protocol"] = PROTOCOL_DIASPORA;
2392 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
2393 $arr["uid"] = $importer["uid"];
2394 $arr["contact-id"] = $self[0]["id"];
2396 $arr["type"] = 'wall';
2397 $arr["gravity"] = 0;
2399 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
2400 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
2401 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
2402 $arr["verb"] = ACTIVITY_FRIEND;
2403 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
2405 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
2406 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
2407 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
2408 $arr["body"] = L10n::t('%1$s is now friends with %2$s', $A, $B)."\n\n\n".$BPhoto;
2410 $arr["object"] = self::constructNewFriendObject($contact);
2412 $user = dba::selectFirst('user', ['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid'], ['uid' => $importer["uid"]]);
2414 $arr["allow_cid"] = $user["allow_cid"];
2415 $arr["allow_gid"] = $user["allow_gid"];
2416 $arr["deny_cid"] = $user["deny_cid"];
2417 $arr["deny_gid"] = $user["deny_gid"];
2419 $i = Item::insert($arr);
2421 Worker::add(PRIORITY_HIGH, "Notifier", "activity", $i);
2428 * @brief Creates a XML object for a "new friend" message
2430 * @param array $contact Array of the contact
2432 * @return string The XML
2434 private static function constructNewFriendObject($contact)
2436 $objtype = ACTIVITY_OBJ_PERSON;
2437 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
2438 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
2440 $xmldata = ["object" => ["type" => $objtype,
2441 "title" => $contact["name"],
2442 "id" => $contact["url"]."/".$contact["name"],
2445 return XML::fromArray($xmldata, $xml, true);
2449 * @brief Processes incoming sharing notification
2451 * @param array $importer Array of the importer user
2452 * @param object $data The message object
2454 * @return bool Success
2456 private static function receiveContactRequest($importer, $data)
2458 $author = unxmlify($data->author);
2459 $recipient = unxmlify($data->recipient);
2461 if (!$author || !$recipient) {
2465 // the current protocol version doesn't know these fields
2466 // That means that we will assume their existance
2467 if (isset($data->following)) {
2468 $following = (unxmlify($data->following) == "true");
2473 if (isset($data->sharing)) {
2474 $sharing = (unxmlify($data->sharing) == "true");
2479 $contact = self::contactByHandle($importer["uid"], $author);
2481 // perhaps we were already sharing with this person. Now they're sharing with us.
2482 // That makes us friends.
2485 logger("Author ".$author." (Contact ".$contact["id"].") wants to follow us.", LOGGER_DEBUG);
2486 self::receiveRequestMakeFriend($importer, $contact);
2488 // refetch the contact array
2489 $contact = self::contactByHandle($importer["uid"], $author);
2491 // If we are now friends, we are sending a share message.
2492 // Normally we needn't to do so, but the first message could have been vanished.
2493 if (in_array($contact["rel"], [CONTACT_IS_FRIEND])) {
2494 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2496 logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2497 $ret = self::sendShare($u[0], $contact);
2502 logger("Author ".$author." doesn't want to follow us anymore.", LOGGER_DEBUG);
2503 Contact::removeFollower($importer, $contact);
2508 if (!$following && $sharing && in_array($importer["page-flags"], [PAGE_SOAPBOX, PAGE_NORMAL])) {
2509 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
2511 } elseif (!$following && !$sharing) {
2512 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
2514 } elseif (!$following && $sharing) {
2515 logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
2516 } elseif ($following && $sharing) {
2517 logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
2518 } elseif ($following && !$sharing) {
2519 logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
2522 $ret = self::personByHandle($author);
2524 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
2525 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
2529 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
2532 "INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
2533 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
2534 intval($importer["uid"]),
2535 dbesc($ret["network"]),
2536 dbesc($ret["addr"]),
2537 DateTimeFormat::utcNow(),
2539 dbesc(normalise_link($ret["url"])),
2541 dbesc($ret["name"]),
2542 dbesc($ret["nick"]),
2543 dbesc($ret["photo"]),
2544 dbesc($ret["pubkey"]),
2545 dbesc($ret["notify"]),
2546 dbesc($ret["poll"]),
2551 // find the contact record we just created
2553 $contact_record = self::contactByHandle($importer["uid"], $author);
2555 if (!$contact_record) {
2556 logger("unable to locate newly created contact record.");
2560 logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
2562 Group::addMember(User::getDefaultGroup($importer['uid'], $ret["network"]), $contact_record['id']);
2564 Contact::updateAvatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
2566 if ($importer["page-flags"] == PAGE_NORMAL) {
2567 logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
2569 $hash = random_string().(string)time(); // Generate a confirm_key
2572 "INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
2573 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
2574 intval($importer["uid"]),
2575 intval($contact_record["id"]),
2578 dbesc(L10n::t("Sharing notification from Diaspora network")),
2580 dbesc(DateTimeFormat::utcNow())
2583 // automatic friend approval
2585 logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
2587 Contact::updateAvatar($contact_record["photo"], $importer["uid"], $contact_record["id"]);
2589 // technically they are sharing with us (CONTACT_IS_SHARING),
2590 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
2591 // we are going to change the relationship and make them a follower.
2593 if (($importer["page-flags"] == PAGE_FREELOVE) && $sharing && $following) {
2594 $new_relation = CONTACT_IS_FRIEND;
2595 } elseif (($importer["page-flags"] == PAGE_FREELOVE) && $sharing) {
2596 $new_relation = CONTACT_IS_SHARING;
2598 $new_relation = CONTACT_IS_FOLLOWER;
2602 "UPDATE `contact` SET `rel` = %d,
2610 intval($new_relation),
2611 dbesc(DateTimeFormat::utcNow()),
2612 dbesc(DateTimeFormat::utcNow()),
2613 intval($contact_record["id"])
2616 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2618 logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2619 $ret = self::sendShare($u[0], $contact_record);
2621 // Send the profile data, maybe it weren't transmitted before
2622 self::sendProfile($importer["uid"], [$contact_record]);
2630 * @brief Fetches a message with a given guid
2632 * @param string $guid message guid
2633 * @param string $orig_author handle of the original post
2634 * @param string $author handle of the sharer
2636 * @return array The fetched item
2638 private static function originalItem($guid, $orig_author, $author)
2640 // Do we already have this item?
2642 "SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2643 `author-name`, `author-link`, `author-avatar`
2644 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2648 if (DBM::is_result($r)) {
2649 logger("reshared message ".$guid." already exists on system.");
2651 // Maybe it is already a reshared item?
2652 // Then refetch the content, if it is a reshare from a reshare.
2653 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2654 if (self::isReshare($r[0]["body"], true)) {
2656 } elseif (self::isReshare($r[0]["body"], false) || strstr($r[0]["body"], "[share")) {
2657 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2659 $r[0]["body"] = self::replacePeopleGuid($r[0]["body"], $r[0]["author-link"]);
2661 // Add OEmbed and other information to the body
2662 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
2670 if (!DBM::is_result($r)) {
2671 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2672 logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2673 $item_id = self::storeByGuid($guid, $server);
2676 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2677 logger("2nd try: reshared message ".$guid." will be fetched without SLL from the server ".$server);
2678 $item_id = self::storeByGuid($guid, $server);
2683 "SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2684 `author-name`, `author-link`, `author-avatar`
2685 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2689 if (DBM::is_result($r)) {
2690 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2691 if (self::isReshare($r[0]["body"], false)) {
2692 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2693 $r[0]["body"] = self::replacePeopleGuid($r[0]["body"], $r[0]["author-link"]);
2704 * @brief Processes a reshare message
2706 * @param array $importer Array of the importer user
2707 * @param object $data The message object
2708 * @param string $xml The original XML of the message
2710 * @return int the message id
2712 private static function receiveReshare($importer, $data, $xml)
2714 $author = notags(unxmlify($data->author));
2715 $guid = notags(unxmlify($data->guid));
2716 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
2717 $root_author = notags(unxmlify($data->root_author));
2718 $root_guid = notags(unxmlify($data->root_guid));
2719 /// @todo handle unprocessed property "provider_display_name"
2720 $public = notags(unxmlify($data->public));
2722 $contact = self::allowedContactByHandle($importer, $author, false);
2727 $message_id = self::messageExists($importer["uid"], $guid);
2732 $original_item = self::originalItem($root_guid, $root_author, $author);
2733 if (!$original_item) {
2737 $orig_url = System::baseUrl()."/display/".$original_item["guid"];
2741 $datarray["uid"] = $importer["uid"];
2742 $datarray["contact-id"] = $contact["id"];
2743 $datarray["network"] = NETWORK_DIASPORA;
2745 $datarray["author-name"] = $contact["name"];
2746 $datarray["author-link"] = $contact["url"];
2747 $datarray["author-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
2749 $datarray["owner-name"] = $datarray["author-name"];
2750 $datarray["owner-link"] = $datarray["author-link"];
2751 $datarray["owner-avatar"] = $datarray["author-avatar"];
2753 $datarray["guid"] = $guid;
2754 $datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
2756 $datarray["verb"] = ACTIVITY_POST;
2757 $datarray["gravity"] = GRAVITY_PARENT;
2759 $datarray["protocol"] = PROTOCOL_DIASPORA;
2760 $datarray["source"] = $xml;
2762 $prefix = share_header(
2763 $original_item["author-name"],
2764 $original_item["author-link"],
2765 $original_item["author-avatar"],
2766 $original_item["guid"],
2767 $original_item["created"],
2770 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2772 $datarray["tag"] = $original_item["tag"];
2773 $datarray["app"] = $original_item["app"];
2775 $datarray["plink"] = self::plink($author, $guid);
2776 $datarray["private"] = (($public == "false") ? 1 : 0);
2777 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2779 $datarray["object-type"] = $original_item["object-type"];
2781 self::fetchGuid($datarray);
2782 $message_id = Item::insert($datarray);
2784 self::sendParticipation($contact, $datarray);
2787 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2795 * @brief Processes retractions
2797 * @param array $importer Array of the importer user
2798 * @param array $contact The contact of the item owner
2799 * @param object $data The message object
2801 * @return bool success
2803 private static function itemRetraction($importer, $contact, $data)
2805 $author = notags(unxmlify($data->author));
2806 $target_guid = notags(unxmlify($data->target_guid));
2807 $target_type = notags(unxmlify($data->target_type));
2809 $person = self::personByHandle($author);
2810 if (!is_array($person)) {
2811 logger("unable to find author detail for ".$author);
2815 if (empty($contact["url"])) {
2816 $contact["url"] = $person["url"];
2819 // Fetch items that are about to be deleted
2820 $fields = ['uid', 'id', 'parent', 'parent-uri', 'author-link'];
2822 // When we receive a public retraction, we delete every item that we find.
2823 if ($importer['uid'] == 0) {
2824 $condition = ["`guid` = ? AND NOT `file` LIKE '%%[%%' AND NOT `deleted`", $target_guid];
2826 $condition = ["`guid` = ? AND `uid` = ? AND NOT `file` LIKE '%%[%%' AND NOT `deleted`", $target_guid, $importer['uid']];
2828 $r = dba::select('item', $fields, $condition);
2829 if (!DBM::is_result($r)) {
2830 logger("Target guid ".$target_guid." was not found on this system for user ".$importer['uid'].".");
2834 while ($item = dba::fetch($r)) {
2835 // Fetch the parent item
2836 $parent = dba::selectFirst('item', ['author-link', 'origin'], ['id' => $item["parent"]]);
2838 // Only delete it if the parent author really fits
2839 if (!link_compare($parent["author-link"], $contact["url"]) && !link_compare($item["author-link"], $contact["url"])) {
2840 logger("Thread author ".$parent["author-link"]." and item author ".$item["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2844 Item::deleteById($item["id"]);
2846 logger("Deleted target ".$target_guid." (".$item["id"].") from user ".$item["uid"]." parent: ".$item["parent"], LOGGER_DEBUG);
2848 // Now check if the retraction needs to be relayed by us
2849 if ($parent["origin"]) {
2851 Worker::add(PRIORITY_HIGH, "Notifier", "drop", $item["id"]);
2859 * @brief Receives retraction messages
2861 * @param array $importer Array of the importer user
2862 * @param string $sender The sender of the message
2863 * @param object $data The message object
2865 * @return bool Success
2867 private static function receiveRetraction($importer, $sender, $data)
2869 $target_type = notags(unxmlify($data->target_type));
2871 $contact = self::contactByHandle($importer["uid"], $sender);
2872 if (!$contact && (in_array($target_type, ["Contact", "Person"]))) {
2873 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2877 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2879 switch ($target_type) {
2884 case "StatusMessage":
2885 return self::itemRetraction($importer, $contact, $data);
2889 /// @todo What should we do with an "unshare"?
2890 // Removing the contact isn't correct since we still can read the public items
2891 Contact::remove($contact["id"]);
2895 logger("Unknown target type ".$target_type);
2902 * @brief Receives status messages
2904 * @param array $importer Array of the importer user
2905 * @param object $data The message object
2906 * @param string $xml The original XML of the message
2908 * @return int The message id of the newly created item
2910 private static function receiveStatusMessage($importer, $data, $xml)
2912 $author = notags(unxmlify($data->author));
2913 $guid = notags(unxmlify($data->guid));
2914 $created_at = DateTimeFormat::utc(notags(unxmlify($data->created_at)));
2915 $public = notags(unxmlify($data->public));
2916 $text = unxmlify($data->text);
2917 $provider_display_name = notags(unxmlify($data->provider_display_name));
2919 $contact = self::allowedContactByHandle($importer, $author, false);
2924 $message_id = self::messageExists($importer["uid"], $guid);
2930 if ($data->location) {
2931 foreach ($data->location->children() as $fieldname => $data) {
2932 $address[$fieldname] = notags(unxmlify($data));
2936 $body = diaspora2bb($text);
2940 // Attach embedded pictures to the body
2942 foreach ($data->photo as $photo) {
2943 $body = "[img]".unxmlify($photo->remote_photo_path).
2944 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2947 $datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
2949 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2951 // Add OEmbed and other information to the body
2952 if (!self::isRedmatrix($contact["url"])) {
2953 $body = add_page_info_to_body($body, false, true);
2957 /// @todo enable support for polls
2958 //if ($data->poll) {
2959 // foreach ($data->poll AS $poll)
2964 /// @todo enable support for events
2966 $datarray["uid"] = $importer["uid"];
2967 $datarray["contact-id"] = $contact["id"];
2968 $datarray["network"] = NETWORK_DIASPORA;
2970 $datarray["author-name"] = $contact["name"];
2971 $datarray["author-link"] = $contact["url"];
2972 $datarray["author-avatar"] = ((x($contact, "thumb")) ? $contact["thumb"] : $contact["photo"]);
2974 $datarray["owner-name"] = $datarray["author-name"];
2975 $datarray["owner-link"] = $datarray["author-link"];
2976 $datarray["owner-avatar"] = $datarray["author-avatar"];
2978 $datarray["guid"] = $guid;
2979 $datarray["uri"] = $datarray["parent-uri"] = self::getUriFromGuid($author, $guid);
2981 $datarray["verb"] = ACTIVITY_POST;
2982 $datarray["gravity"] = GRAVITY_PARENT;
2984 $datarray["protocol"] = PROTOCOL_DIASPORA;
2985 $datarray["source"] = $xml;
2987 $datarray["body"] = self::replacePeopleGuid($body, $contact["url"]);
2989 if ($provider_display_name != "") {
2990 $datarray["app"] = $provider_display_name;
2993 $datarray["plink"] = self::plink($author, $guid);
2994 $datarray["private"] = (($public == "false") ? 1 : 0);
2995 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2997 if (isset($address["address"])) {
2998 $datarray["location"] = $address["address"];
3001 if (isset($address["lat"]) && isset($address["lng"])) {
3002 $datarray["coord"] = $address["lat"]." ".$address["lng"];
3005 self::fetchGuid($datarray);
3006 $message_id = Item::insert($datarray);
3008 self::sendParticipation($contact, $datarray);
3011 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
3018 /* ************************************************************************************** *
3019 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
3020 * ************************************************************************************** */
3023 * @brief returnes the handle of a contact
3025 * @param array $contact contact array
3027 * @return string the handle in the format user@domain.tld
3029 private static function myHandle($contact)
3031 if ($contact["addr"] != "") {
3032 return $contact["addr"];
3035 // Normally we should have a filled "addr" field - but in the past this wasn't the case
3036 // So - just in case - we build the the address here.
3037 if ($contact["nickname"] != "") {
3038 $nick = $contact["nickname"];
3040 $nick = $contact["nick"];
3043 return $nick."@".substr(System::baseUrl(), strpos(System::baseUrl(), "://") + 3);
3048 * @brief Creates the data for a private message in the new format
3050 * @param string $msg The message that is to be transmitted
3051 * @param array $user The record of the sender
3052 * @param array $contact Target of the communication
3053 * @param string $prvkey The private key of the sender
3054 * @param string $pubkey The public key of the receiver
3056 * @return string The encrypted data
3058 public static function encodePrivateData($msg, $user, $contact, $prvkey, $pubkey)
3060 logger("Message: ".$msg, LOGGER_DATA);
3062 // without a public key nothing will work
3064 logger("pubkey missing: contact id: ".$contact["id"]);
3068 $aes_key = openssl_random_pseudo_bytes(32);
3069 $b_aes_key = base64_encode($aes_key);
3070 $iv = openssl_random_pseudo_bytes(16);
3071 $b_iv = base64_encode($iv);
3073 $ciphertext = self::aesEncrypt($aes_key, $iv, $msg);
3075 $json = json_encode(["iv" => $b_iv, "key" => $b_aes_key]);
3077 $encrypted_key_bundle = "";
3078 openssl_public_encrypt($json, $encrypted_key_bundle, $pubkey);
3080 $json_object = json_encode(
3081 ["aes_key" => base64_encode($encrypted_key_bundle),
3082 "encrypted_magic_envelope" => base64_encode($ciphertext)]
3085 return $json_object;
3089 * @brief Creates the envelope for the "fetch" endpoint and for the new format
3091 * @param string $msg The message that is to be transmitted
3092 * @param array $user The record of the sender
3094 * @return string The envelope
3096 public static function buildMagicEnvelope($msg, $user)
3098 $b64url_data = base64url_encode($msg);
3099 $data = str_replace(["\n", "\r", " ", "\t"], ["", "", "", ""], $b64url_data);
3101 $key_id = base64url_encode(self::myHandle($user));
3102 $type = "application/xml";
3103 $encoding = "base64url";
3104 $alg = "RSA-SHA256";
3105 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
3107 // Fallback if the private key wasn't transmitted in the expected field
3108 if ($user['uprvkey'] == "") {
3109 $user['uprvkey'] = $user['prvkey'];
3112 $signature = Crypto::rsaSign($signable_data, $user["uprvkey"]);
3113 $sig = base64url_encode($signature);
3115 $xmldata = ["me:env" => ["me:data" => $data,
3116 "@attributes" => ["type" => $type],
3117 "me:encoding" => $encoding,
3120 "@attributes2" => ["key_id" => $key_id]]];
3122 $namespaces = ["me" => "http://salmon-protocol.org/ns/magic-env"];
3124 return XML::fromArray($xmldata, $xml, false, $namespaces);
3128 * @brief Create the envelope for a message
3130 * @param string $msg The message that is to be transmitted
3131 * @param array $user The record of the sender
3132 * @param array $contact Target of the communication
3133 * @param string $prvkey The private key of the sender
3134 * @param string $pubkey The public key of the receiver
3135 * @param bool $public Is the message public?
3137 * @return string The message that will be transmitted to other servers
3139 private static function buildMessage($msg, $user, $contact, $prvkey, $pubkey, $public = false)
3141 // The message is put into an envelope with the sender's signature
3142 $envelope = self::buildMagicEnvelope($msg, $user);
3144 // Private messages are put into a second envelope, encrypted with the receivers public key
3146 $envelope = self::encodePrivateData($envelope, $user, $contact, $prvkey, $pubkey);
3153 * @brief Creates a signature for a message
3155 * @param array $owner the array of the owner of the message
3156 * @param array $message The message that is to be signed
3158 * @return string The signature
3160 private static function signature($owner, $message)
3163 unset($sigmsg["author_signature"]);
3164 unset($sigmsg["parent_author_signature"]);
3166 $signed_text = implode(";", $sigmsg);
3168 return base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
3172 * @brief Transmit a message to a target server
3174 * @param array $owner the array of the item owner
3175 * @param array $contact Target of the communication
3176 * @param string $envelope The message that is to be transmitted
3177 * @param bool $public_batch Is it a public post?
3178 * @param bool $queue_run Is the transmission called from the queue?
3179 * @param string $guid message guid
3181 * @return int Result of the transmission
3183 public static function transmit($owner, $contact, $envelope, $public_batch, $queue_run = false, $guid = "", $no_queue = false)
3187 $enabled = intval(Config::get("system", "diaspora_enabled"));
3192 $logid = random_string(4);
3193 $dest_url = ($public_batch ? $contact["batch"] : $contact["notify"]);
3195 // Fetch the fcontact entry when there is missing data
3196 // Will possibly happen when data is transmitted to a DFRN contact
3197 if (empty($dest_url) && !empty($contact['addr'])) {
3198 $fcontact = self::personByHandle($contact['addr']);
3199 $dest_url = ($public_batch ? $fcontact["batch"] : $fcontact["notify"]);
3203 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
3207 logger("transmit: ".$logid."-".$guid." ".$dest_url);
3209 if (!$queue_run && Queue::wasDelayed($contact["id"])) {
3212 if (!intval(Config::get("system", "diaspora_test"))) {
3213 $content_type = (($public_batch) ? "application/magic-envelope+xml" : "application/json");
3215 Network::post($dest_url."/", $envelope, ["Content-Type: ".$content_type]);
3216 $return_code = $a->get_curl_code();
3218 logger("test_mode");
3223 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
3225 if (!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
3227 logger("queue message");
3228 // queue message for redelivery
3229 Queue::add($contact["id"], NETWORK_DIASPORA, $envelope, $public_batch, $guid);
3232 // The message could not be delivered. We mark the contact as "dead"
3233 Contact::markForArchival($contact);
3234 } elseif (($return_code >= 200) && ($return_code <= 299)) {
3235 // We successfully delivered a message, the contact is alive
3236 Contact::unmarkForArchival($contact);
3239 return $return_code ? $return_code : -1;
3244 * @brief Build the post xml
3246 * @param string $type The message type
3247 * @param array $message The message data
3249 * @return string The post XML
3251 public static function buildPostXml($type, $message)
3253 $data = [$type => $message];
3255 return XML::fromArray($data, $xml);
3259 * @brief Builds and transmit messages
3261 * @param array $owner the array of the item owner
3262 * @param array $contact Target of the communication
3263 * @param string $type The message type
3264 * @param array $message The message data
3265 * @param bool $public_batch Is it a public post?
3266 * @param string $guid message guid
3267 * @param bool $spool Should the transmission be spooled or transmitted?
3269 * @return int Result of the transmission
3271 private static function buildAndTransmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false)
3273 $msg = self::buildPostXml($type, $message);
3275 logger('message: '.$msg, LOGGER_DATA);
3276 logger('send guid '.$guid, LOGGER_DEBUG);
3278 // Fallback if the private key wasn't transmitted in the expected field
3279 if ($owner['uprvkey'] == "") {
3280 $owner['uprvkey'] = $owner['prvkey'];
3283 $envelope = self::buildMessage($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
3286 Queue::add($contact['id'], NETWORK_DIASPORA, $envelope, $public_batch, $guid);
3289 $return_code = self::transmit($owner, $contact, $envelope, $public_batch, false, $guid);
3292 logger("guid: ".$guid." result ".$return_code, LOGGER_DEBUG);
3294 return $return_code;
3298 * @brief sends a participation (Used to get all further updates)
3300 * @param array $contact Target of the communication
3301 * @param array $item Item array
3303 * @return int The result of the transmission
3305 private static function sendParticipation($contact, $item)
3307 // Don't send notifications for private postings
3308 if ($item['private']) {
3312 $cachekey = "diaspora:sendParticipation:".$item['guid'];
3314 $result = Cache::get($cachekey);
3315 if (!is_null($result)) {
3319 // Fetch some user id to have a valid handle to transmit the participation.
3320 // In fact it doesn't matter which user sends this - but it is needed by the protocol.
3321 // If the item belongs to a user, we take this user id.
3322 if ($item['uid'] == 0) {
3323 $condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false];
3324 $first_user = dba::selectFirst('user', ['uid'], $condition);
3325 $owner = User::getOwnerDataById($first_user['uid']);
3327 $owner = User::getOwnerDataById($item['uid']);
3330 $author = self::myHandle($owner);
3332 $message = ["author" => $author,
3333 "guid" => get_guid(32),
3334 "parent_type" => "Post",
3335 "parent_guid" => $item["guid"]];
3337 logger("Send participation for ".$item["guid"]." by ".$author, LOGGER_DEBUG);
3339 // It doesn't matter what we store, we only want to avoid sending repeated notifications for the same item
3340 Cache::set($cachekey, $item["guid"], CACHE_QUARTER_HOUR);
3342 return self::buildAndTransmit($owner, $contact, "participation", $message);
3346 * @brief sends an account migration
3348 * @param array $owner the array of the item owner
3349 * @param array $contact Target of the communication
3350 * @param int $uid User ID
3352 * @return int The result of the transmission
3354 public static function sendAccountMigration($owner, $contact, $uid)
3356 $old_handle = PConfig::get($uid, 'system', 'previous_addr');
3357 $profile = self::createProfileData($uid);
3359 $signed_text = 'AccountMigration:'.$old_handle.':'.$profile['author'];
3360 $signature = base64_encode(Crypto::rsaSign($signed_text, $owner["uprvkey"], "sha256"));
3362 $message = ["author" => $old_handle,
3363 "profile" => $profile,
3364 "signature" => $signature];
3366 logger("Send account migration ".print_r($message, true), LOGGER_DEBUG);
3368 return self::buildAndTransmit($owner, $contact, "account_migration", $message);
3372 * @brief Sends a "share" message
3374 * @param array $owner the array of the item owner
3375 * @param array $contact Target of the communication
3377 * @return int The result of the transmission
3379 public static function sendShare($owner, $contact)
3382 * @todo support the different possible combinations of "following" and "sharing"
3383 * Currently, Diaspora only interprets the "sharing" field
3385 * Before switching this code productive, we have to check all "sendShare" calls if "rel" is set correctly
3389 switch ($contact["rel"]) {
3390 case CONTACT_IS_FRIEND:
3393 case CONTACT_IS_SHARING:
3396 case CONTACT_IS_FOLLOWER:
3402 $message = ["author" => self::myHandle($owner),
3403 "recipient" => $contact["addr"],
3404 "following" => "true",
3405 "sharing" => "true"];
3407 logger("Send share ".print_r($message, true), LOGGER_DEBUG);
3409 return self::buildAndTransmit($owner, $contact, "contact", $message);
3413 * @brief sends an "unshare"
3415 * @param array $owner the array of the item owner
3416 * @param array $contact Target of the communication
3418 * @return int The result of the transmission
3420 public static function sendUnshare($owner, $contact)
3422 $message = ["author" => self::myHandle($owner),
3423 "recipient" => $contact["addr"],
3424 "following" => "false",
3425 "sharing" => "false"];
3427 logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
3429 return self::buildAndTransmit($owner, $contact, "contact", $message);
3433 * @brief Checks a message body if it is a reshare
3435 * @param string $body The message body that is to be check
3436 * @param bool $complete Should it be a complete check or a simple check?
3438 * @return array|bool Reshare details or "false" if no reshare
3440 public static function isReshare($body, $complete = true)
3442 $body = trim($body);
3444 // Skip if it isn't a pure repeated messages
3445 // Does it start with a share?
3446 if ((strpos($body, "[share") > 0) && $complete) {
3450 // Does it end with a share?
3451 if (strlen($body) > (strrpos($body, "[/share]") + 8)) {
3455 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "$1", $body);
3456 // Skip if there is no shared message in there
3457 if ($body == $attributes) {
3461 // If we don't do the complete check we quit here
3467 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
3468 if ($matches[1] != "") {
3469 $guid = $matches[1];
3472 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
3473 if ($matches[1] != "") {
3474 $guid = $matches[1];
3479 "SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
3486 $ret["root_handle"] = self::handleFromContact($r[0]["contact-id"]);
3487 $ret["root_guid"] = $guid;
3493 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
3494 if ($matches[1] != "") {
3495 $profile = $matches[1];
3498 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
3499 if ($matches[1] != "") {
3500 $profile = $matches[1];
3505 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
3506 if (($ret["root_handle"] == $profile) || ($ret["root_handle"] == "")) {
3511 preg_match("/link='(.*?)'/ism", $attributes, $matches);
3512 if ($matches[1] != "") {
3513 $link = $matches[1];
3516 preg_match('/link="(.*?)"/ism', $attributes, $matches);
3517 if ($matches[1] != "") {
3518 $link = $matches[1];
3521 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
3522 if (($ret["root_guid"] == $link) || (trim($ret["root_guid"]) == "")) {
3530 * @brief Create an event array
3532 * @param integer $event_id The id of the event
3534 * @return array with event data
3536 private static function buildEvent($event_id)
3538 $r = q("SELECT `guid`, `uid`, `start`, `finish`, `nofinish`, `summary`, `desc`, `location`, `adjust` FROM `event` WHERE `id` = %d", intval($event_id));
3539 if (!DBM::is_result($r)) {
3547 $r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d", intval($event['uid']));
3548 if (!DBM::is_result($r)) {
3554 $r = q("SELECT `addr`, `nick` FROM `contact` WHERE `uid` = %d AND `self`", intval($event['uid']));
3555 if (!DBM::is_result($r)) {
3561 $eventdata['author'] = self::myHandle($owner);
3563 if ($event['guid']) {
3564 $eventdata['guid'] = $event['guid'];
3567 $mask = DateTimeFormat::ATOM;
3569 /// @todo - establish "all day" events in Friendica
3570 $eventdata["all_day"] = "false";
3572 if (!$event['adjust']) {
3573 $eventdata['timezone'] = $user['timezone'];
3575 if ($eventdata['timezone'] == "") {
3576 $eventdata['timezone'] = 'UTC';
3580 if ($event['start']) {
3581 $eventdata['start'] = DateTimeFormat::convert($event['start'], "UTC", $eventdata['timezone'], $mask);
3583 if ($event['finish'] && !$event['nofinish']) {
3584 $eventdata['end'] = DateTimeFormat::convert($event['finish'], "UTC", $eventdata['timezone'], $mask);
3586 if ($event['summary']) {
3587 $eventdata['summary'] = html_entity_decode(bb2diaspora($event['summary']));
3589 if ($event['desc']) {
3590 $eventdata['description'] = html_entity_decode(bb2diaspora($event['desc']));
3592 if ($event['location']) {
3594 $location["address"] = html_entity_decode(bb2diaspora($event['location']));
3595 $location["lat"] = 0;
3596 $location["lng"] = 0;
3597 $eventdata['location'] = $location;
3604 * @brief Create a post (status message or reshare)
3606 * @param array $item The item that will be exported
3607 * @param array $owner the array of the item owner
3610 * 'type' -> Message type ("status_message" or "reshare")
3611 * 'message' -> Array of XML elements of the status
3613 public static function buildStatus($item, $owner)
3615 $cachekey = "diaspora:buildStatus:".$item['guid'];
3617 $result = Cache::get($cachekey);
3618 if (!is_null($result)) {
3622 $myaddr = self::myHandle($owner);
3624 $public = (($item["private"]) ? "false" : "true");
3626 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
3628 // Detect a share element and do a reshare
3629 if (!$item['private'] && ($ret = self::isReshare($item["body"]))) {
3630 $message = ["author" => $myaddr,
3631 "guid" => $item["guid"],
3632 "created_at" => $created,
3633 "root_author" => $ret["root_handle"],
3634 "root_guid" => $ret["root_guid"],
3635 "provider_display_name" => $item["app"],
3636 "public" => $public];
3640 $title = $item["title"];
3641 $body = $item["body"];
3643 // convert to markdown
3644 $body = html_entity_decode(bb2diaspora($body));
3647 if (strlen($title)) {
3648 $body = "## ".html_entity_decode($title)."\n\n".$body;
3651 if ($item["attach"]) {
3652 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
3654 $body .= "\n".L10n::t("Attachments:")."\n";
3655 foreach ($matches as $mtch) {
3656 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
3663 if ($item["location"] != "")
3664 $location["address"] = $item["location"];
3666 if ($item["coord"] != "") {
3667 $coord = explode(" ", $item["coord"]);
3668 $location["lat"] = $coord[0];
3669 $location["lng"] = $coord[1];
3672 $message = ["author" => $myaddr,
3673 "guid" => $item["guid"],
3674 "created_at" => $created,
3675 "public" => $public,
3677 "provider_display_name" => $item["app"],
3678 "location" => $location];
3680 // Diaspora rejects messages when they contain a location without "lat" or "lng"
3681 if (!isset($location["lat"]) || !isset($location["lng"])) {
3682 unset($message["location"]);
3685 if ($item['event-id'] > 0) {
3686 $event = self::buildEvent($item['event-id']);
3687 if (count($event)) {
3688 $message['event'] = $event;
3690 /// @todo Once Diaspora supports it, we will remove the body
3691 // $message['text'] = '';
3695 $type = "status_message";
3698 $msg = ["type" => $type, "message" => $message];
3700 Cache::set($cachekey, $msg, CACHE_QUARTER_HOUR);
3706 * @brief Sends a post
3708 * @param array $item The item that will be exported
3709 * @param array $owner the array of the item owner
3710 * @param array $contact Target of the communication
3711 * @param bool $public_batch Is it a public post?
3713 * @return int The result of the transmission
3715 public static function sendStatus($item, $owner, $contact, $public_batch = false)
3717 $status = self::buildStatus($item, $owner);
3719 return self::buildAndTransmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
3723 * @brief Creates a "like" object
3725 * @param array $item The item that will be exported
3726 * @param array $owner the array of the item owner
3728 * @return array The data for a "like"
3730 private static function constructLike($item, $owner)
3733 "SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3734 dbesc($item["thr-parent"])
3736 if (!DBM::is_result($p)) {
3742 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3744 if ($item['verb'] === ACTIVITY_LIKE) {
3746 } elseif ($item['verb'] === ACTIVITY_DISLIKE) {
3747 $positive = "false";
3750 return(["author" => self::myHandle($owner),
3751 "guid" => $item["guid"],
3752 "parent_guid" => $parent["guid"],
3753 "parent_type" => $target_type,
3754 "positive" => $positive,
3755 "author_signature" => ""]);
3759 * @brief Creates an "EventParticipation" object
3761 * @param array $item The item that will be exported
3762 * @param array $owner the array of the item owner
3764 * @return array The data for an "EventParticipation"
3766 private static function constructAttend($item, $owner)
3769 "SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3770 dbesc($item["thr-parent"])
3772 if (!DBM::is_result($p)) {
3778 switch ($item['verb']) {
3779 case ACTIVITY_ATTEND:
3780 $attend_answer = 'accepted';
3782 case ACTIVITY_ATTENDNO:
3783 $attend_answer = 'declined';
3785 case ACTIVITY_ATTENDMAYBE:
3786 $attend_answer = 'tentative';
3789 logger('Unknown verb '.$item['verb'].' in item '.$item['guid']);
3793 return(["author" => self::myHandle($owner),
3794 "guid" => $item["guid"],
3795 "parent_guid" => $parent["guid"],
3796 "status" => $attend_answer,
3797 "author_signature" => ""]);
3801 * @brief Creates the object for a comment
3803 * @param array $item The item that will be exported
3804 * @param array $owner the array of the item owner
3806 * @return array The data for a comment
3808 private static function constructComment($item, $owner)
3810 $cachekey = "diaspora:constructComment:".$item['guid'];
3812 $result = Cache::get($cachekey);
3813 if (!is_null($result)) {
3818 "SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
3819 intval($item["parent"]),
3820 intval($item["parent"])
3823 if (!DBM::is_result($p)) {
3829 $text = html_entity_decode(bb2diaspora($item["body"]));
3830 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
3832 $comment = ["author" => self::myHandle($owner),
3833 "guid" => $item["guid"],
3834 "created_at" => $created,
3835 "parent_guid" => $parent["guid"],
3837 "author_signature" => ""];
3839 // Send the thread parent guid only if it is a threaded comment
3840 if ($item['thr-parent'] != $item['parent-uri']) {
3841 $comment['thread_parent_guid'] = self::getGuidFromUri($item['thr-parent'], $item['uid']);
3844 Cache::set($cachekey, $comment, CACHE_QUARTER_HOUR);
3850 * @brief Send a like or a comment
3852 * @param array $item The item that will be exported
3853 * @param array $owner the array of the item owner
3854 * @param array $contact Target of the communication
3855 * @param bool $public_batch Is it a public post?
3857 * @return int The result of the transmission
3859 public static function sendFollowup($item, $owner, $contact, $public_batch = false)
3861 if (in_array($item['verb'], [ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE])) {
3862 $message = self::constructAttend($item, $owner);
3863 $type = "event_participation";
3864 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3865 $message = self::constructLike($item, $owner);
3868 $message = self::constructComment($item, $owner);
3876 $message["author_signature"] = self::signature($owner, $message);
3878 return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3882 * @brief Creates a message from a signature record entry
3884 * @param array $item The item that will be exported
3885 * @param array $signature The entry of the "sign" record
3887 * @return string The message
3889 private static function messageFromSignature($item, $signature)
3891 // Split the signed text
3892 $signed_parts = explode(";", $signature['signed_text']);
3894 if ($item["deleted"]) {
3895 $message = ["author" => $signature['signer'],
3896 "target_guid" => $signed_parts[0],
3897 "target_type" => $signed_parts[1]];
3898 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3899 $message = ["author" => $signed_parts[4],
3900 "guid" => $signed_parts[1],
3901 "parent_guid" => $signed_parts[3],
3902 "parent_type" => $signed_parts[2],
3903 "positive" => $signed_parts[0],
3904 "author_signature" => $signature['signature'],
3905 "parent_author_signature" => ""];
3907 // Remove the comment guid
3908 $guid = array_shift($signed_parts);
3910 // Remove the parent guid
3911 $parent_guid = array_shift($signed_parts);
3913 // Remove the handle
3914 $handle = array_pop($signed_parts);
3916 // Glue the parts together
3917 $text = implode(";", $signed_parts);
3919 $message = ["author" => $handle,
3921 "parent_guid" => $parent_guid,
3922 "text" => implode(";", $signed_parts),
3923 "author_signature" => $signature['signature'],
3924 "parent_author_signature" => ""];
3930 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
3932 * @param array $item The item that will be exported
3933 * @param array $owner the array of the item owner
3934 * @param array $contact Target of the communication
3935 * @param bool $public_batch Is it a public post?
3937 * @return int The result of the transmission
3939 public static function sendRelay($item, $owner, $contact, $public_batch = false)
3941 if ($item["deleted"]) {
3942 return self::sendRetraction($item, $owner, $contact, $public_batch, true);
3943 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
3949 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3951 // fetch the original signature
3954 "SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3959 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3965 // Old way - is used by the internal Friendica functions
3966 /// @todo Change all signatur storing functions to the new format
3967 if ($signature['signed_text'] && $signature['signature'] && $signature['signer']) {
3968 $message = self::messageFromSignature($item, $signature);
3970 $msg = json_decode($signature['signed_text'], true);
3973 if (is_array($msg)) {
3974 foreach ($msg as $field => $data) {
3975 if (!$item["deleted"]) {
3976 if ($field == "diaspora_handle") {
3979 if ($field == "target_type") {
3980 $field = "parent_type";
3984 $message[$field] = $data;
3987 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3991 $message["parent_author_signature"] = self::signature($owner, $message);
3993 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3995 return self::buildAndTransmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3999 * @brief Sends a retraction (deletion) of a message, like or comment
4001 * @param array $item The item that will be exported
4002 * @param array $owner the array of the item owner
4003 * @param array $contact Target of the communication
4004 * @param bool $public_batch Is it a public post?
4005 * @param bool $relay Is the retraction transmitted from a relay?
4007 * @return int The result of the transmission
4009 public static function sendRetraction($item, $owner, $contact, $public_batch = false, $relay = false)
4011 $itemaddr = self::handleFromContact($item["contact-id"], $item["gcontact-id"]);
4013 $msg_type = "retraction";
4015 if ($item['id'] == $item['parent']) {
4016 $target_type = "Post";
4017 } elseif (in_array($item["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
4018 $target_type = "Like";
4020 $target_type = "Comment";
4023 $message = ["author" => $itemaddr,
4024 "target_guid" => $item['guid'],
4025 "target_type" => $target_type];
4027 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
4029 return self::buildAndTransmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
4033 * @brief Sends a mail
4035 * @param array $item The item that will be exported
4036 * @param array $owner The owner
4037 * @param array $contact Target of the communication
4039 * @return int The result of the transmission
4041 public static function sendMail($item, $owner, $contact)
4043 $myaddr = self::myHandle($owner);
4046 "SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
4047 intval($item["convid"]),
4048 intval($item["uid"])
4051 if (!DBM::is_result($r)) {
4052 logger("conversation not found.");
4058 "author" => $cnv["creator"],
4059 "guid" => $cnv["guid"],
4060 "subject" => $cnv["subject"],
4061 "created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
4062 "participants" => $cnv["recips"]
4065 $body = bb2diaspora($item["body"]);
4066 $created = DateTimeFormat::utc($item["created"], DateTimeFormat::ATOM);
4069 "author" => $myaddr,
4070 "guid" => $item["guid"],
4071 "conversation_guid" => $cnv["guid"],
4073 "created_at" => $created,
4076 if ($item["reply"]) {
4081 "author" => $cnv["creator"],
4082 "guid" => $cnv["guid"],
4083 "subject" => $cnv["subject"],
4084 "created_at" => DateTimeFormat::utc($cnv['created'], DateTimeFormat::ATOM),
4085 "participants" => $cnv["recips"],
4088 $type = "conversation";
4091 return self::buildAndTransmit($owner, $contact, $type, $message, false, $item["guid"]);
4095 * @brief Split a name into first name and last name
4097 * @param string $name The name
4099 * @return array The array with "first" and "last"
4101 public static function splitName($name) {
4102 $name = trim($name);
4104 // Is the name longer than 64 characters? Then cut the rest of it.
4105 if (strlen($name) > 64) {
4106 if ((strpos($name, ' ') <= 64) && (strpos($name, ' ') !== false)) {
4107 $name = trim(substr($name, 0, strrpos(substr($name, 0, 65), ' ')));
4109 $name = substr($name, 0, 64);
4113 // Take the first word as first name
4114 $first = ((strpos($name, ' ') ? trim(substr($name, 0, strpos($name, ' '))) : $name));
4115 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4116 if ((strlen($first) < 32) && (strlen($last) < 32)) {
4117 return ['first' => $first, 'last' => $last];
4120 // Take the last word as last name
4121 $first = ((strrpos($name, ' ') ? trim(substr($name, 0, strrpos($name, ' '))) : $name));
4122 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4124 if ((strlen($first) < 32) && (strlen($last) < 32)) {
4125 return ['first' => $first, 'last' => $last];
4128 // Take the first 32 characters if there is no space in the first 32 characters
4129 if ((strpos($name, ' ') > 32) || (strpos($name, ' ') === false)) {
4130 $first = substr($name, 0, 32);
4131 $last = substr($name, 32);
4132 return ['first' => $first, 'last' => $last];
4135 $first = trim(substr($name, 0, strrpos(substr($name, 0, 33), ' ')));
4136 $last = (($first === $name) ? '' : trim(substr($name, strlen($first))));
4138 // Check if the last name is longer than 32 characters
4139 if (strlen($last) > 32) {
4140 if (strpos($last, ' ') <= 32) {
4141 $last = trim(substr($last, 0, strrpos(substr($last, 0, 33), ' ')));
4143 $last = substr($last, 0, 32);
4147 return ['first' => $first, 'last' => $last];
4151 * @brief Create profile data
4153 * @param int $uid The user id
4155 * @return array The profile data
4157 private static function createProfileData($uid)
4160 "SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
4162 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
4163 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
4164 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
4173 $handle = $profile["addr"];
4175 $split_name = self::splitName($profile['name']);
4176 $first = $split_name['first'];
4177 $last = $split_name['last'];
4179 $large = System::baseUrl().'/photo/custom/300/'.$profile['uid'].'.jpg';
4180 $medium = System::baseUrl().'/photo/custom/100/'.$profile['uid'].'.jpg';
4181 $small = System::baseUrl().'/photo/custom/50/' .$profile['uid'].'.jpg';
4182 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
4188 if ($searchable === 'true') {
4191 if ($profile['dob'] && ($profile['dob'] > '0000-00-00')) {
4192 list($year, $month, $day) = sscanf($profile['dob'], '%4d-%2d-%2d');
4196 $dob = DateTimeFormat::utc($year . '-' . $month . '-'. $day, 'Y-m-d');
4199 $about = $profile['about'];
4200 $about = strip_tags(bbcode($about));
4202 $location = Profile::formatLocation($profile);
4204 if ($profile['pub_keywords']) {
4205 $kw = str_replace(',', ' ', $profile['pub_keywords']);
4206 $kw = str_replace(' ', ' ', $kw);
4207 $arr = explode(' ', $profile['pub_keywords']);
4209 for ($x = 0; $x < 5; $x ++) {
4210 if (trim($arr[$x])) {
4211 $tags .= '#'. trim($arr[$x]) .' ';
4216 $tags = trim($tags);
4219 return ["author" => $handle,
4220 "first_name" => $first,
4221 "last_name" => $last,
4222 "image_url" => $large,
4223 "image_url_medium" => $medium,
4224 "image_url_small" => $small,
4226 "gender" => $profile['gender'],
4228 "location" => $location,
4229 "searchable" => $searchable,
4231 "tag_string" => $tags];
4235 * @brief Sends profile data
4237 * @param int $uid The user id
4238 * @param bool $recips optional, default false
4241 public static function sendProfile($uid, $recips = false)
4247 $owner = User::getOwnerDataById($uid);
4254 "SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
4255 AND `uid` = %d AND `rel` != %d",
4256 dbesc(NETWORK_DIASPORA),
4258 intval(CONTACT_IS_SHARING)
4266 $message = self::createProfileData($uid);
4268 foreach ($recips as $recip) {
4269 logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
4270 self::buildAndTransmit($owner, $recip, "profile", $message, false, "", false);
4275 * @brief Stores the signature for likes that are created on our system
4277 * @param array $contact The contact array of the "like"
4278 * @param int $post_id The post id of the "like"
4280 * @return bool Success
4282 public static function storeLikeSignature($contact, $post_id)
4284 // Is the contact the owner? Then fetch the private key
4285 if (!$contact['self'] || ($contact['uid'] == 0)) {
4286 logger("No owner post, so not storing signature", LOGGER_DEBUG);
4290 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
4291 if (!DBM::is_result($r)) {
4295 $contact["uprvkey"] = $r[0]['prvkey'];
4297 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
4298 if (!DBM::is_result($r)) {
4302 if (!in_array($r[0]["verb"], [ACTIVITY_LIKE, ACTIVITY_DISLIKE])) {
4306 $message = self::constructLike($r[0], $contact);
4307 if ($message === false) {
4311 $message["author_signature"] = self::signature($contact, $message);
4314 * Now store the signature more flexible to dynamically support new fields.
4315 * This will break Diaspora compatibility with Friendica versions prior to 3.5.
4317 dba::insert('sign', ['iid' => $post_id, 'signed_text' => json_encode($message)]);
4319 logger('Stored diaspora like signature');
4324 * @brief Stores the signature for comments that are created on our system
4326 * @param array $item The item array of the comment
4327 * @param array $contact The contact array of the item owner
4328 * @param string $uprvkey The private key of the sender
4329 * @param int $message_id The message id of the comment
4331 * @return bool Success
4333 public static function storeCommentSignature($item, $contact, $uprvkey, $message_id)
4335 if ($uprvkey == "") {
4336 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
4340 $contact["uprvkey"] = $uprvkey;
4342 $message = self::constructComment($item, $contact);
4343 if ($message === false) {
4347 $message["author_signature"] = self::signature($contact, $message);
4350 * Now store the signature more flexible to dynamically support new fields.
4351 * This will break Diaspora compatibility with Friendica versions prior to 3.5.
4353 dba::insert('sign', ['iid' => $message_id, 'signed_text' => json_encode($message)]);
4355 logger('Stored diaspora comment signature');