3 * @file include/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 "valid_posting" and interpret only the new protocol.
12 use Friendica\Core\System;
13 use Friendica\Core\Config;
15 require_once 'include/items.php';
16 require_once 'include/bb2diaspora.php';
17 require_once 'include/probe.php';
18 require_once 'include/Contact.php';
19 require_once 'include/Photo.php';
20 require_once 'include/socgraph.php';
21 require_once 'include/group.php';
22 require_once 'include/xml.php';
23 require_once 'include/datetime.php';
24 require_once 'include/queue_fn.php';
25 require_once 'include/cache.php';
28 * @brief This class contain functions to create and send Diaspora XML files
34 * @brief Return a list of relay servers
36 * This is an experimental Diaspora feature.
38 * @return array of relay servers
40 public static function relay_list() {
42 $serverdata = get_config("system", "relay_server");
43 if ($serverdata == "")
48 $servers = explode(",", $serverdata);
50 foreach ($servers AS $server) {
51 $server = trim($server);
52 $addr = "relay@".str_replace("http://", "", normalise_link($server));
53 $batch = $server."/receive/public";
55 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' AND `addr` = '%s' AND `nurl` = '%s' LIMIT 1",
56 dbesc($batch), dbesc($addr), dbesc(normalise_link($server)));
59 $r = q("INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
60 VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
65 dbesc(normalise_link($server)),
67 dbesc(NETWORK_DIASPORA),
68 intval(CONTACT_IS_FOLLOWER),
69 dbesc(datetime_convert()),
70 dbesc(datetime_convert()),
71 dbesc(datetime_convert())
74 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
76 $relay[] = $relais[0];
78 $relay[] = $relais[0];
85 * @brief repairs a signature that was double encoded
87 * The function is unused at the moment. It was copied from the old implementation.
89 * @param string $signature The signature
90 * @param string $handle The handle of the signature owner
91 * @param integer $level This value is only set inside this function to avoid endless loops
93 * @return string the repaired signature
95 private static function repair_signature($signature, $handle = "", $level = 1) {
100 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
101 $signature = base64_decode($signature);
102 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
104 // Do a recursive call to be able to fix even multiple levels
106 $signature = self::repair_signature($signature, $handle, ++$level);
113 * @brief verify the envelope and return the verified data
115 * @param string $envelope The magic envelope
117 * @return string verified data
119 private static function verify_magic_envelope($envelope) {
121 $basedom = parse_xml_string($envelope, false);
123 if (!is_object($basedom)) {
124 logger("Envelope is no XML file");
128 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
130 if (sizeof($children) == 0) {
131 logger("XML has no children");
137 $data = base64url_decode($children->data);
138 $type = $children->data->attributes()->type[0];
140 $encoding = $children->encoding;
142 $alg = $children->alg;
144 $sig = base64url_decode($children->sig);
145 $key_id = $children->sig->attributes()->key_id[0];
147 $handle = base64url_decode($key_id);
149 $b64url_data = base64url_encode($data);
150 $msg = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
152 $signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
154 $key = self::key($handle);
156 $verify = rsa_verify($signable_data, $sig, $key);
158 logger('Message did not verify. Discarding.');
166 * @brief encrypts data via AES
168 * @param string $key The AES key
169 * @param string $iv The IV (is used for CBC encoding)
170 * @param string $data The data that is to be encrypted
172 * @return string encrypted data
174 private static function aes_encrypt($key, $iv, $data) {
175 return openssl_encrypt($data, 'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA, str_pad($iv, 16, "\0"));
179 * @brief decrypts data via AES
181 * @param string $key The AES key
182 * @param string $iv The IV (is used for CBC encoding)
183 * @param string $encrypted The encrypted data
185 * @return string decrypted data
187 private static function aes_decrypt($key, $iv, $encrypted) {
188 return openssl_decrypt($encrypted,'aes-256-cbc', str_pad($key, 32, "\0"), OPENSSL_RAW_DATA,str_pad($iv, 16, "\0"));
192 * @brief: Decodes incoming Diaspora message in the new format
194 * @param array $importer Array of the importer user
195 * @param string $raw raw post message
198 * 'message' -> decoded Diaspora XML message
199 * 'author' -> author diaspora handle
200 * 'key' -> author public key (converted to pkcs#8)
202 public static function decode_raw($importer, $raw) {
203 $data = json_decode($raw);
205 // Is it a private post? Then decrypt the outer Salmon
206 if (is_object($data)) {
207 $encrypted_aes_key_bundle = base64_decode($data->aes_key);
208 $ciphertext = base64_decode($data->encrypted_magic_envelope);
210 $outer_key_bundle = '';
211 @openssl_private_decrypt($encrypted_aes_key_bundle, $outer_key_bundle, $importer['prvkey']);
212 $j_outer_key_bundle = json_decode($outer_key_bundle);
214 if (!is_object($j_outer_key_bundle)) {
215 logger('Outer Salmon did not verify. Discarding.');
216 http_status_exit(400);
219 $outer_iv = base64_decode($j_outer_key_bundle->iv);
220 $outer_key = base64_decode($j_outer_key_bundle->key);
222 $xml = diaspora::aes_decrypt($outer_key, $outer_iv, $ciphertext);
227 $basedom = parse_xml_string($xml);
229 if (!is_object($basedom)) {
230 logger('Received data does not seem to be an XML. Discarding.');
231 http_status_exit(400);
234 $base = $basedom->children(NAMESPACE_SALMON_ME);
236 // Not sure if this cleaning is needed
237 $data = str_replace(array(" ", "\t", "\r", "\n"), array("", "", "", ""), $base->data);
239 // Build the signed data
240 $type = $base->data[0]->attributes()->type[0];
241 $encoding = $base->encoding;
243 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
245 // This is the signature
246 $signature = base64url_decode($base->sig);
248 // Get the senders' public key
249 $key_id = $base->sig[0]->attributes()->key_id[0];
250 $author_addr = base64_decode($key_id);
251 $key = diaspora::key($author_addr);
253 $verify = rsa_verify($signed_data, $signature, $key);
255 logger('Message did not verify. Discarding.');
256 http_status_exit(400);
259 return array('message' => (string)base64url_decode($base->data),
260 'author' => unxmlify($author_addr),
261 'key' => (string)$key);
265 * @brief: Decodes incoming Diaspora message in the deprecated format
267 * @param array $importer Array of the importer user
268 * @param string $xml urldecoded Diaspora salmon
271 * 'message' -> decoded Diaspora XML message
272 * 'author' -> author diaspora handle
273 * 'key' -> author public key (converted to pkcs#8)
275 public static function decode($importer, $xml) {
278 $basedom = parse_xml_string($xml);
280 if (!is_object($basedom)) {
281 logger("XML is not parseable.");
284 $children = $basedom->children('https://joindiaspora.com/protocol');
286 if ($children->header) {
288 $author_link = str_replace('acct:','',$children->header->author_id);
291 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
293 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
294 $ciphertext = base64_decode($encrypted_header->ciphertext);
296 $outer_key_bundle = '';
297 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
299 $j_outer_key_bundle = json_decode($outer_key_bundle);
301 $outer_iv = base64_decode($j_outer_key_bundle->iv);
302 $outer_key = base64_decode($j_outer_key_bundle->key);
304 $decrypted = self::aes_decrypt($outer_key, $outer_iv, $ciphertext);
306 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
307 $idom = parse_xml_string($decrypted,false);
309 $inner_iv = base64_decode($idom->iv);
310 $inner_aes_key = base64_decode($idom->aes_key);
312 $author_link = str_replace('acct:','',$idom->author_id);
315 $dom = $basedom->children(NAMESPACE_SALMON_ME);
317 // figure out where in the DOM tree our data is hiding
319 if ($dom->provenance->data)
320 $base = $dom->provenance;
321 elseif ($dom->env->data)
327 logger('unable to locate salmon data in xml');
328 http_status_exit(400);
332 // Stash the signature away for now. We have to find their key or it won't be good for anything.
333 $signature = base64url_decode($base->sig);
337 // strip whitespace so our data element will return to one big base64 blob
338 $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
341 // stash away some other stuff for later
343 $type = $base->data[0]->attributes()->type[0];
344 $keyhash = $base->sig[0]->attributes()->keyhash[0];
345 $encoding = $base->encoding;
349 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
353 $data = base64url_decode($data);
357 $inner_decrypted = $data;
360 // Decode the encrypted blob
362 $inner_encrypted = base64_decode($data);
363 $inner_decrypted = self::aes_decrypt($inner_aes_key, $inner_iv, $inner_encrypted);
367 logger('Could not retrieve author URI.');
368 http_status_exit(400);
370 // Once we have the author URI, go to the web and try to find their public key
371 // (first this will look it up locally if it is in the fcontact cache)
372 // This will also convert diaspora public key from pkcs#1 to pkcs#8
374 logger('Fetching key for '.$author_link);
375 $key = self::key($author_link);
378 logger('Could not retrieve author key.');
379 http_status_exit(400);
382 $verify = rsa_verify($signed_data,$signature,$key);
385 logger('Message did not verify. Discarding.');
386 http_status_exit(400);
389 logger('Message verified.');
391 return array('message' => (string)$inner_decrypted,
392 'author' => unxmlify($author_link),
393 'key' => (string)$key);
398 * @brief Dispatches public messages and find the fitting receivers
400 * @param array $msg The post that will be dispatched
402 * @return int The message id of the generated message, "true" or "false" if there was an error
404 public static function dispatch_public($msg) {
406 $enabled = intval(get_config("system", "diaspora_enabled"));
408 logger("diaspora is disabled");
412 if (!($postdata = self::valid_posting($msg))) {
413 logger("Invalid posting");
417 $fields = $postdata['fields'];
419 // Is it a an action (comment, like, ...) for our own post?
420 if (isset($fields->parent_guid) && !$postdata["relayed"]) {
421 $guid = notags(unxmlify($fields->parent_guid));
422 $importer = self::importer_for_guid($guid);
423 if (is_array($importer)) {
424 logger("delivering to origin: ".$importer["name"]);
425 $message_id = self::dispatch($importer, $msg, $fields);
430 // Now distribute it to the followers
431 $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
432 (SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
433 AND NOT `account_expired` AND NOT `account_removed`",
434 dbesc(NETWORK_DIASPORA),
435 dbesc($msg["author"])
438 if (dbm::is_result($r)) {
439 foreach ($r as $rr) {
440 logger("delivering to: ".$rr["username"]);
441 self::dispatch($rr, $msg, $fields);
443 } elseif (!Config::get('system', 'relay_subscribe', false)) {
444 logger("Unwanted message from ".$msg["author"]." send by ".$_SERVER["REMOTE_ADDR"]." with ".$_SERVER["HTTP_USER_AGENT"].": ".print_r($msg, true), LOGGER_DEBUG);
446 // Use a dummy importer to import the data for the public copy
447 $importer = array("uid" => 0, "page-flags" => PAGE_FREELOVE);
448 $message_id = self::dispatch($importer, $msg, $fields);
455 * @brief Dispatches the different message types to the different functions
457 * @param array $importer Array of the importer user
458 * @param array $msg The post that will be dispatched
459 * @param object $fields SimpleXML object that contains the message
461 * @return int The message id of the generated message, "true" or "false" if there was an error
463 public static function dispatch($importer, $msg, $fields = null) {
465 // The sender is the handle of the contact that sent the message.
466 // This will often be different with relayed messages (for example "like" and "comment")
467 $sender = $msg["author"];
469 // This is only needed for private postings since this is already done for public ones before
470 if (is_null($fields)) {
471 if (!($postdata = self::valid_posting($msg))) {
472 logger("Invalid posting");
475 $fields = $postdata['fields'];
478 $type = $fields->getName();
480 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
483 case "account_deletion":
484 return self::receive_account_deletion($importer, $fields);
487 return self::receive_comment($importer, $sender, $fields, $msg["message"]);
490 return self::receive_contact_request($importer, $fields);
493 return self::receive_conversation($importer, $msg, $fields);
496 return self::receive_like($importer, $sender, $fields);
499 return self::receive_message($importer, $fields);
501 case "participation": // Not implemented
502 return self::receive_participation($importer, $fields);
504 case "photo": // Not implemented
505 return self::receive_photo($importer, $fields);
507 case "poll_participation": // Not implemented
508 return self::receive_poll_participation($importer, $fields);
511 return self::receive_profile($importer, $fields);
514 return self::receive_reshare($importer, $fields, $msg["message"]);
517 return self::receive_retraction($importer, $sender, $fields);
519 case "status_message":
520 return self::receive_status_message($importer, $fields, $msg["message"]);
523 logger("Unknown message type ".$type);
531 * @brief Checks if a posting is valid and fetches the data fields.
533 * This function does not only check the signature.
534 * It also does the conversion between the old and the new diaspora format.
536 * @param array $msg Array with the XML, the sender handle and the sender signature
538 * @return bool|array If the posting is valid then an array with an SimpleXML object is returned
540 private static function valid_posting($msg) {
542 $data = parse_xml_string($msg["message"], false);
544 if (!is_object($data)) {
545 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
549 $first_child = $data->getName();
551 // Is this the new or the old version?
552 if ($data->getName() == "XML") {
554 foreach ($data->post->children() as $child)
561 $type = $element->getName();
564 logger("Got message type ".$type.": ".$msg["message"], LOGGER_DATA);
566 // All retractions are handled identically from now on.
567 // In the new version there will only be "retraction".
568 if (in_array($type, array("signed_retraction", "relayable_retraction")))
569 $type = "retraction";
571 if ($type == "request")
574 $fields = new SimpleXMLElement("<".$type."/>");
578 foreach ($element->children() AS $fieldname => $entry) {
580 // Translation for the old XML structure
581 if ($fieldname == "diaspora_handle") {
582 $fieldname = "author";
584 if ($fieldname == "participant_handles") {
585 $fieldname = "participants";
587 if (in_array($type, array("like", "participation"))) {
588 if ($fieldname == "target_type") {
589 $fieldname = "parent_type";
592 if ($fieldname == "sender_handle") {
593 $fieldname = "author";
595 if ($fieldname == "recipient_handle") {
596 $fieldname = "recipient";
598 if ($fieldname == "root_diaspora_id") {
599 $fieldname = "root_author";
601 if ($type == "status_message") {
602 if ($fieldname == "raw_message") {
606 if ($type == "retraction") {
607 if ($fieldname == "post_guid") {
608 $fieldname = "target_guid";
610 if ($fieldname == "type") {
611 $fieldname = "target_type";
616 if (($fieldname == "author_signature") && ($entry != ""))
617 $author_signature = base64_decode($entry);
618 elseif (($fieldname == "parent_author_signature") && ($entry != ""))
619 $parent_author_signature = base64_decode($entry);
620 elseif (!in_array($fieldname, array("author_signature", "parent_author_signature", "target_author_signature"))) {
621 if ($signed_data != "") {
623 $signed_data_parent .= ";";
626 $signed_data .= $entry;
628 if (!in_array($fieldname, array("parent_author_signature", "target_author_signature")) ||
629 ($orig_type == "relayable_retraction"))
630 xml::copy($entry, $fields, $fieldname);
633 // This is something that shouldn't happen at all.
634 if (in_array($type, array("status_message", "reshare", "profile")))
635 if ($msg["author"] != $fields->author) {
636 logger("Message handle is not the same as envelope sender. Quitting this message.");
640 // Only some message types have signatures. So we quit here for the other types.
641 if (!in_array($type, array("comment", "like"))) {
642 return array("fields" => $fields, "relayed" => false);
644 // No author_signature? This is a must, so we quit.
645 if (!isset($author_signature)) {
646 logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
650 if (isset($parent_author_signature)) {
653 $key = self::key($msg["author"]);
655 if (!rsa_verify($signed_data, $parent_author_signature, $key, "sha256")) {
656 logger("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
663 $key = self::key($fields->author);
665 if (!rsa_verify($signed_data, $author_signature, $key, "sha256")) {
666 logger("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
669 return array("fields" => $fields, "relayed" => $relayed);
674 * @brief Fetches the public key for a given handle
676 * @param string $handle The handle
678 * @return string The public key
680 private static function key($handle) {
681 $handle = strval($handle);
683 logger("Fetching diaspora key for: ".$handle);
685 $r = self::person_by_handle($handle);
693 * @brief Fetches data for a given handle
695 * @param string $handle The handle
697 * @return array the queried data
699 public static function person_by_handle($handle) {
701 $r = q("SELECT * FROM `fcontact` WHERE `network` = '%s' AND `addr` = '%s' LIMIT 1",
702 dbesc(NETWORK_DIASPORA),
707 logger("In cache ".print_r($r,true), LOGGER_DEBUG);
709 // update record occasionally so it doesn't get stale
710 $d = strtotime($person["updated"]." +00:00");
711 if ($d < strtotime("now - 14 days"))
714 if ($person["guid"] == "")
718 if (!$person || $update) {
719 logger("create or refresh", LOGGER_DEBUG);
720 $r = probe_url($handle, PROBE_DIASPORA);
722 // Note that Friendica contacts will return a "Diaspora person"
723 // if Diaspora connectivity is enabled on their server
724 if ($r && ($r["network"] === NETWORK_DIASPORA)) {
725 self::add_fcontact($r, $update);
733 * @brief Updates the fcontact table
735 * @param array $arr The fcontact data
736 * @param bool $update Update or insert?
738 * @return string The id of the fcontact entry
740 private static function add_fcontact($arr, $update = false) {
743 $r = q("UPDATE `fcontact` SET
757 WHERE `url` = '%s' AND `network` = '%s'",
759 dbesc($arr["photo"]),
760 dbesc($arr["request"]),
762 dbesc(strtolower($arr["addr"])),
764 dbesc($arr["batch"]),
765 dbesc($arr["notify"]),
767 dbesc($arr["confirm"]),
768 dbesc($arr["alias"]),
769 dbesc($arr["pubkey"]),
770 dbesc(datetime_convert()),
772 dbesc($arr["network"])
775 $r = q("INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`, `guid`,
776 `batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
777 VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
780 dbesc($arr["photo"]),
781 dbesc($arr["request"]),
785 dbesc($arr["batch"]),
786 dbesc($arr["notify"]),
788 dbesc($arr["confirm"]),
789 dbesc($arr["network"]),
790 dbesc($arr["alias"]),
791 dbesc($arr["pubkey"]),
792 dbesc(datetime_convert())
800 * @brief get a handle (user@domain.tld) from a given contact id or gcontact id
802 * @param int $contact_id The id in the contact table
803 * @param int $gcontact_id The id in the gcontact table
805 * @return string the handle
807 public static function handle_from_contact($contact_id, $gcontact_id = 0) {
810 logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
812 if ($gcontact_id != 0) {
813 $r = q("SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
814 intval($gcontact_id));
816 if (dbm::is_result($r)) {
817 return strtolower($r[0]["addr"]);
821 $r = q("SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
822 intval($contact_id));
824 if (dbm::is_result($r)) {
827 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
829 if ($contact['addr'] != "") {
830 $handle = $contact['addr'];
832 $baseurl_start = strpos($contact['url'],'://') + 3;
833 $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
834 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
835 $handle = $contact['nick'].'@'.$baseurl;
839 return strtolower($handle);
843 * @brief get a url (scheme://domain.tld/u/user) from a given Diaspora*
846 * @param mixed $fcontact_guid Hexadecimal string guid
848 * @return string the contact url or null
850 public static function url_from_contact_guid($fcontact_guid) {
851 logger("fcontact guid is ".$fcontact_guid, LOGGER_DEBUG);
853 $r = q("SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
854 dbesc(NETWORK_DIASPORA),
855 dbesc($fcontact_guid)
858 if (dbm::is_result($r)) {
866 * @brief Get a contact id for a given handle
868 * @param int $uid The user id
869 * @param string $handle The handle in the format user@domain.tld
871 * @return The contact id
873 private static function contact_by_handle($uid, $handle) {
875 // First do a direct search on the contact table
876 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
881 if (dbm::is_result($r)) {
885 * We haven't found it?
886 * We use another function for it that will possibly create a contact entry.
888 $cid = get_contact($handle, $uid);
891 /// @TODO Contact retrieval should be encapsulated into an "entity" class like `Contact`
892 $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1", intval($cid));
894 if (dbm::is_result($r)) {
900 $handle_parts = explode("@", $handle);
901 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
902 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
907 if (dbm::is_result($r)) {
911 logger("Haven't found contact for user ".$uid." and handle ".$handle, LOGGER_DEBUG);
916 * @brief Check if posting is allowed for this contact
918 * @param array $importer Array of the importer user
919 * @param array $contact The contact that is checked
920 * @param bool $is_comment Is the check for a comment?
922 * @return bool is the contact allowed to post?
924 private static function post_allow($importer, $contact, $is_comment = false) {
927 * Perhaps we were already sharing with this person. Now they're sharing with us.
928 * That makes us friends.
929 * Normally this should have handled by getting a request - but this could get lost
931 if ($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
932 dba::update('contact', array('rel' => CONTACT_IS_FRIEND, 'writable' => true),
933 array('id' => $contact["id"], 'uid' => $contact["uid"]));
935 $contact["rel"] = CONTACT_IS_FRIEND;
936 logger("defining user ".$contact["nick"]." as friend");
939 // We don't seem to like that person
940 if ($contact["blocked"] || $contact["readonly"] || $contact["archive"]) {
941 // Maybe blocked, don't accept.
943 // We are following this person?
944 } elseif (($contact["rel"] == CONTACT_IS_SHARING) || ($contact["rel"] == CONTACT_IS_FRIEND)) {
945 // Yes, then it is fine.
947 // Is it a post to a community?
948 } elseif (($contact["rel"] == CONTACT_IS_FOLLOWER) && ($importer["page-flags"] == PAGE_COMMUNITY)) {
951 // Is the message a global user or a comment?
952 } elseif (($importer["uid"] == 0) || $is_comment) {
953 // Messages for the global users and comments are always accepted
961 * @brief Fetches the contact id for a handle and checks if posting is allowed
963 * @param array $importer Array of the importer user
964 * @param string $handle The checked handle in the format user@domain.tld
965 * @param bool $is_comment Is the check for a comment?
967 * @return array The contact data
969 private static function allowed_contact_by_handle($importer, $handle, $is_comment = false) {
970 $contact = self::contact_by_handle($importer["uid"], $handle);
972 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
973 // If a contact isn't found, we accept it anyway if it is a comment
981 if (!self::post_allow($importer, $contact, $is_comment)) {
982 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
989 * @brief Does the message already exists on the system?
991 * @param int $uid The user id
992 * @param string $guid The guid of the message
994 * @return int|bool message id if the message already was stored into the system - or false.
996 private static function message_exists($uid, $guid) {
997 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1002 if (dbm::is_result($r)) {
1003 logger("message ".$guid." already exists for user ".$uid);
1011 * @brief Checks for links to posts in a message
1013 * @param array $item The item array
1015 private static function fetch_guid($item) {
1016 preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
1017 function ($match) use ($item){
1018 return(self::fetch_guid_sub($match, $item));
1023 * @brief Checks for relative /people/* links in an item body to match local
1024 * contacts or prepends the remote host taken from the author link.
1026 * @param string $body The item body to replace links from
1027 * @param string $author_link The author link for missing local contact fallback
1029 * @return the replaced string
1031 public static function replace_people_guid($body, $author_link) {
1032 $return = preg_replace_callback("&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
1033 function ($match) use ($author_link) {
1035 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
1036 // 1 => '0123456789abcdef'
1038 $handle = self::url_from_contact_guid($match[1]);
1041 $return = '@[url='.$handle.']'.$match[2].'[/url]';
1043 // No local match, restoring absolute remote URL from author scheme and host
1044 $author_url = parse_url($author_link);
1045 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
1055 * @brief sub function of "fetch_guid" which checks for links in messages
1057 * @param array $match array containing a link that has to be checked for a message link
1058 * @param array $item The item array
1060 private static function fetch_guid_sub($match, $item) {
1061 if (!self::store_by_guid($match[1], $item["author-link"]))
1062 self::store_by_guid($match[1], $item["owner-link"]);
1066 * @brief Fetches an item with a given guid from a given server
1068 * @param string $guid the message guid
1069 * @param string $server The server address
1070 * @param int $uid The user id of the user
1072 * @return int the message id of the stored message or false
1074 private static function store_by_guid($guid, $server, $uid = 0) {
1075 $serverparts = parse_url($server);
1076 $server = $serverparts["scheme"]."://".$serverparts["host"];
1078 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
1080 $msg = self::message($guid, $server);
1085 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
1087 // Now call the dispatcher
1088 return self::dispatch_public($msg);
1092 * @brief Fetches a message from a server
1094 * @param string $guid message guid
1095 * @param string $server The url of the server
1096 * @param int $level Endless loop prevention
1099 * 'message' => The message XML
1100 * 'author' => The author handle
1101 * 'key' => The public key of the author
1103 private static function message($guid, $server, $level = 0) {
1108 // This will work for new Diaspora servers and Friendica servers from 3.5
1109 $source_url = $server."/fetch/post/".$guid;
1110 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
1112 $envelope = fetch_url($source_url);
1114 logger("Envelope was fetched.", LOGGER_DEBUG);
1115 $x = self::verify_magic_envelope($envelope);
1117 logger("Envelope could not be verified.", LOGGER_DEBUG);
1119 logger("Envelope was verified.", LOGGER_DEBUG);
1123 // This will work for older Diaspora and Friendica servers
1125 $source_url = $server."/p/".$guid.".xml";
1126 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
1128 $x = fetch_url($source_url);
1133 $source_xml = parse_xml_string($x, false);
1135 if (!is_object($source_xml))
1138 if ($source_xml->post->reshare) {
1139 // Reshare of a reshare - old Diaspora version
1140 logger("Message is a reshare", LOGGER_DEBUG);
1141 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
1142 } elseif ($source_xml->getName() == "reshare") {
1143 // Reshare of a reshare - new Diaspora version
1144 logger("Message is a new reshare", LOGGER_DEBUG);
1145 return self::message($source_xml->root_guid, $server, ++$level);
1150 // Fetch the author - for the old and the new Diaspora version
1151 if ($source_xml->post->status_message->diaspora_handle)
1152 $author = (string)$source_xml->post->status_message->diaspora_handle;
1153 elseif ($source_xml->author && ($source_xml->getName() == "status_message"))
1154 $author = (string)$source_xml->author;
1156 // If this isn't a "status_message" then quit
1158 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
1162 $msg = array("message" => $x, "author" => $author);
1164 $msg["key"] = self::key($msg["author"]);
1170 * @brief Fetches the item record of a given guid
1172 * @param int $uid The user id
1173 * @param string $guid message guid
1174 * @param string $author The handle of the item
1175 * @param array $contact The contact of the item owner
1177 * @return array the item record
1179 private static function parent_item($uid, $guid, $author, $contact) {
1180 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1181 `author-name`, `author-link`, `author-avatar`,
1182 `owner-name`, `owner-link`, `owner-avatar`
1183 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1184 intval($uid), dbesc($guid));
1187 $result = self::store_by_guid($guid, $contact["url"], $uid);
1190 $person = self::person_by_handle($author);
1191 $result = self::store_by_guid($guid, $person["url"], $uid);
1195 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
1197 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1198 `author-name`, `author-link`, `author-avatar`,
1199 `owner-name`, `owner-link`, `owner-avatar`
1200 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1201 intval($uid), dbesc($guid));
1206 logger("parent item not found: parent: ".$guid." - user: ".$uid);
1209 logger("parent item found: parent: ".$guid." - user: ".$uid);
1215 * @brief returns contact details
1217 * @param array $contact The default contact if the person isn't found
1218 * @param array $person The record of the person
1219 * @param int $uid The user id
1222 * 'cid' => contact id
1223 * 'network' => network type
1225 private static function author_contact_by_url($contact, $person, $uid) {
1227 $r = q("SELECT `id`, `network`, `url` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
1228 dbesc(normalise_link($person["url"])), intval($uid));
1231 $network = $r[0]["network"];
1233 // We are receiving content from a user that possibly is about to be terminated
1234 // This means the user is vital, so we remove a possible termination date.
1235 unmark_for_death($r[0]);
1237 $cid = $contact["id"];
1238 $network = NETWORK_DIASPORA;
1241 return array("cid" => $cid, "network" => $network);
1245 * @brief Is the profile a hubzilla profile?
1247 * @param string $url The profile link
1249 * @return bool is it a hubzilla server?
1251 public static function is_redmatrix($url) {
1252 return(strstr($url, "/channel/"));
1256 * @brief Generate a post link with a given handle and message guid
1258 * @param string $addr The user handle
1259 * @param string $guid message guid
1261 * @return string the post link
1263 private static function plink($addr, $guid) {
1264 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
1268 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1270 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
1271 // So we try another way as well.
1272 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
1274 $r[0]["network"] = $s[0]["network"];
1276 if ($r[0]["network"] == NETWORK_DFRN)
1277 return(str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/"));
1279 if (self::is_redmatrix($r[0]["url"]))
1280 return $r[0]["url"]."/?f=&mid=".$guid;
1282 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1286 * @brief Processes an account deletion
1288 * @param array $importer Array of the importer user
1289 * @param object $data The message object
1291 * @return bool Success
1293 private static function receive_account_deletion($importer, $data) {
1295 /// @todo Account deletion should remove the contact from the global contacts as well
1297 $author = notags(unxmlify($data->author));
1299 $contact = self::contact_by_handle($importer["uid"], $author);
1301 logger("cannot find contact for author: ".$author);
1305 // We now remove the contact
1306 contact_remove($contact["id"]);
1311 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1313 * @param string $author Author handle
1314 * @param string $guid Message guid
1315 * @param boolean $onlyfound Only return uri when found in the database
1317 * @return string The constructed uri or the one from our database
1319 private static function get_uri_from_guid($author, $guid, $onlyfound = false) {
1321 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1322 if (dbm::is_result($r)) {
1323 return $r[0]["uri"];
1324 } elseif (!$onlyfound) {
1325 return $author.":".$guid;
1332 * @brief Fetch the guid from our database with a given uri
1334 * @param string $author Author handle
1335 * @param string $uri Message uri
1337 * @return string The post guid
1339 private static function get_guid_from_uri($uri, $uid) {
1341 $r = q("SELECT `guid` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($uri), intval($uid));
1342 if (dbm::is_result($r)) {
1343 return $r[0]["guid"];
1350 * @brief Find the best importer for a comment, like, ...
1352 * @param string $guid The guid of the item
1354 * @return array|boolean the origin owner of that post - or false
1356 private static function importer_for_guid($guid) {
1357 $item = dba::fetch_first("SELECT `uid` FROM `item` WHERE `origin` AND `guid` = ? LIMIT 1", $guid);
1359 if (dbm::is_result($item)) {
1360 logger("Found user ".$item['uid']." as owner of item ".$guid, LOGGER_DEBUG);
1361 $contact = dba::fetch_first("SELECT * FROM `contact` WHERE `self` AND `uid` = ?", $item['uid']);
1362 if (dbm::is_result($contact)) {
1370 * @brief Processes an incoming comment
1372 * @param array $importer Array of the importer user
1373 * @param string $sender The sender of the message
1374 * @param object $data The message object
1375 * @param string $xml The original XML of the message
1377 * @return int The message id of the generated comment or "false" if there was an error
1379 private static function receive_comment($importer, $sender, $data, $xml) {
1380 $author = notags(unxmlify($data->author));
1381 $guid = notags(unxmlify($data->guid));
1382 $parent_guid = notags(unxmlify($data->parent_guid));
1383 $text = unxmlify($data->text);
1385 if (isset($data->created_at)) {
1386 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1388 $created_at = datetime_convert();
1391 if (isset($data->thread_parent_guid)) {
1392 $thread_parent_guid = notags(unxmlify($data->thread_parent_guid));
1393 $thr_uri = self::get_uri_from_guid("", $thread_parent_guid, true);
1398 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1403 $message_id = self::message_exists($importer["uid"], $guid);
1408 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1409 if (!$parent_item) {
1413 $person = self::person_by_handle($author);
1414 if (!is_array($person)) {
1415 logger("unable to find author details");
1419 // Fetch the contact id - if we know this contact
1420 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1422 $datarray = array();
1424 $datarray["uid"] = $importer["uid"];
1425 $datarray["contact-id"] = $author_contact["cid"];
1426 $datarray["network"] = $author_contact["network"];
1428 $datarray["author-name"] = $person["name"];
1429 $datarray["author-link"] = $person["url"];
1430 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1432 $datarray["owner-name"] = $contact["name"];
1433 $datarray["owner-link"] = $contact["url"];
1434 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1436 $datarray["guid"] = $guid;
1437 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1439 $datarray["type"] = "remote-comment";
1440 $datarray["verb"] = ACTIVITY_POST;
1441 $datarray["gravity"] = GRAVITY_COMMENT;
1443 if ($thr_uri != "") {
1444 $datarray["parent-uri"] = $thr_uri;
1446 $datarray["parent-uri"] = $parent_item["uri"];
1449 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1451 $datarray["protocol"] = PROTOCOL_DIASPORA;
1452 $datarray["source"] = $xml;
1454 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1456 $body = diaspora2bb($text);
1458 $datarray["body"] = self::replace_people_guid($body, $person["url"]);
1460 self::fetch_guid($datarray);
1462 $message_id = item_store($datarray);
1464 if ($message_id <= 0) {
1469 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1472 // If we are the origin of the parent we store the original data and notify our followers
1473 if ($message_id && $parent_item["origin"]) {
1475 // Formerly we stored the signed text, the signature and the author in different fields.
1476 // We now store the raw data so that we are more flexible.
1477 dba::insert('sign', array('iid' => $message_id, 'signed_text' => json_encode($data)));
1480 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1487 * @brief processes and stores private messages
1489 * @param array $importer Array of the importer user
1490 * @param array $contact The contact of the message
1491 * @param object $data The message object
1492 * @param array $msg Array of the processed message, author handle and key
1493 * @param object $mesg The private message
1494 * @param array $conversation The conversation record to which this message belongs
1496 * @return bool "true" if it was successful
1498 private static function receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation) {
1499 $author = notags(unxmlify($data->author));
1500 $guid = notags(unxmlify($data->guid));
1501 $subject = notags(unxmlify($data->subject));
1503 // "diaspora_handle" is the element name from the old version
1504 // "author" is the element name from the new version
1505 if ($mesg->author) {
1506 $msg_author = notags(unxmlify($mesg->author));
1507 } elseif ($mesg->diaspora_handle) {
1508 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1513 $msg_guid = notags(unxmlify($mesg->guid));
1514 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1515 $msg_text = unxmlify($mesg->text);
1516 $msg_created_at = datetime_convert("UTC", "UTC", notags(unxmlify($mesg->created_at)));
1518 if ($msg_conversation_guid != $guid) {
1519 logger("message conversation guid does not belong to the current conversation.");
1523 $body = diaspora2bb($msg_text);
1524 $message_uri = $msg_author.":".$msg_guid;
1526 $person = self::person_by_handle($msg_author);
1530 $r = q("SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
1532 intval($importer["uid"])
1534 if (dbm::is_result($r)) {
1535 logger("duplicate message already delivered.", LOGGER_DEBUG);
1539 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1540 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1541 intval($importer["uid"]),
1543 intval($conversation["id"]),
1544 dbesc($person["name"]),
1545 dbesc($person["photo"]),
1546 dbesc($person["url"]),
1547 intval($contact["id"]),
1552 dbesc($message_uri),
1553 dbesc($author.":".$guid),
1554 dbesc($msg_created_at)
1559 dba::update('conv', array('updated' => datetime_convert()), array('id' => $conversation["id"]));
1562 "type" => NOTIFY_MAIL,
1563 "notify_flags" => $importer["notify-flags"],
1564 "language" => $importer["language"],
1565 "to_name" => $importer["username"],
1566 "to_email" => $importer["email"],
1567 "uid" =>$importer["uid"],
1568 "item" => array("subject" => $subject, "body" => $body),
1569 "source_name" => $person["name"],
1570 "source_link" => $person["url"],
1571 "source_photo" => $person["thumb"],
1572 "verb" => ACTIVITY_POST,
1579 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1581 * @param array $importer Array of the importer user
1582 * @param array $msg Array of the processed message, author handle and key
1583 * @param object $data The message object
1585 * @return bool Success
1587 private static function receive_conversation($importer, $msg, $data) {
1588 $author = notags(unxmlify($data->author));
1589 $guid = notags(unxmlify($data->guid));
1590 $subject = notags(unxmlify($data->subject));
1591 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1592 $participants = notags(unxmlify($data->participants));
1594 $messages = $data->message;
1596 if (!count($messages)) {
1597 logger("empty conversation");
1601 $contact = self::allowed_contact_by_handle($importer, $msg["author"], true);
1605 $conversation = null;
1607 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1608 intval($importer["uid"]),
1612 $conversation = $c[0];
1614 $r = q("INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1615 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1616 intval($importer["uid"]),
1620 dbesc(datetime_convert()),
1622 dbesc($participants)
1625 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1626 intval($importer["uid"]),
1631 $conversation = $c[0];
1633 if (!$conversation) {
1634 logger("unable to create conversation.");
1638 foreach ($messages as $mesg)
1639 self::receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation);
1645 * @brief Creates the body for a "like" message
1647 * @param array $contact The contact that send us the "like"
1648 * @param array $parent_item The item array of the parent item
1649 * @param string $guid message guid
1651 * @return string the body
1653 private static function construct_like_body($contact, $parent_item, $guid) {
1654 $bodyverb = t('%1$s likes %2$s\'s %3$s');
1656 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1657 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1658 $plink = "[url=".System::baseUrl()."/display/".urlencode($guid)."]".t("status")."[/url]";
1660 return sprintf($bodyverb, $ulink, $alink, $plink);
1664 * @brief Creates a XML object for a "like"
1666 * @param array $importer Array of the importer user
1667 * @param array $parent_item The item array of the parent item
1669 * @return string The XML
1671 private static function construct_like_object($importer, $parent_item) {
1672 $objtype = ACTIVITY_OBJ_NOTE;
1673 $link = '<link rel="alternate" type="text/html" href="'.System::baseUrl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1674 $parent_body = $parent_item["body"];
1676 $xmldata = array("object" => array("type" => $objtype,
1678 "id" => $parent_item["uri"],
1681 "content" => $parent_body));
1683 return xml::from_array($xmldata, $xml, true);
1687 * @brief Processes "like" messages
1689 * @param array $importer Array of the importer user
1690 * @param string $sender The sender of the message
1691 * @param object $data The message object
1693 * @return int The message id of the generated like or "false" if there was an error
1695 private static function receive_like($importer, $sender, $data) {
1696 $author = notags(unxmlify($data->author));
1697 $guid = notags(unxmlify($data->guid));
1698 $parent_guid = notags(unxmlify($data->parent_guid));
1699 $parent_type = notags(unxmlify($data->parent_type));
1700 $positive = notags(unxmlify($data->positive));
1702 // likes on comments aren't supported by Diaspora - only on posts
1703 // But maybe this will be supported in the future, so we will accept it.
1704 if (!in_array($parent_type, array("Post", "Comment")))
1707 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1711 $message_id = self::message_exists($importer["uid"], $guid);
1715 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1719 $person = self::person_by_handle($author);
1720 if (!is_array($person)) {
1721 logger("unable to find author details");
1725 // Fetch the contact id - if we know this contact
1726 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1728 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
1729 // We would accept this anyhow.
1730 if ($positive == "true")
1731 $verb = ACTIVITY_LIKE;
1733 $verb = ACTIVITY_DISLIKE;
1735 $datarray = array();
1737 $datarray["protocol"] = PROTOCOL_DIASPORA;
1739 $datarray["uid"] = $importer["uid"];
1740 $datarray["contact-id"] = $author_contact["cid"];
1741 $datarray["network"] = $author_contact["network"];
1743 $datarray["author-name"] = $person["name"];
1744 $datarray["author-link"] = $person["url"];
1745 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1747 $datarray["owner-name"] = $contact["name"];
1748 $datarray["owner-link"] = $contact["url"];
1749 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1751 $datarray["guid"] = $guid;
1752 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1754 $datarray["type"] = "activity";
1755 $datarray["verb"] = $verb;
1756 $datarray["gravity"] = GRAVITY_LIKE;
1757 $datarray["parent-uri"] = $parent_item["uri"];
1759 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
1760 $datarray["object"] = self::construct_like_object($importer, $parent_item);
1762 $datarray["body"] = self::construct_like_body($contact, $parent_item, $guid);
1764 $message_id = item_store($datarray);
1766 if ($message_id <= 0) {
1771 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1774 // If we are the origin of the parent we store the original data and notify our followers
1775 if ($message_id && $parent_item["origin"]) {
1777 // Formerly we stored the signed text, the signature and the author in different fields.
1778 // We now store the raw data so that we are more flexible.
1779 dba::insert('sign', array('iid' => $message_id, 'signed_text' => json_encode($data)));
1782 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1789 * @brief Processes private messages
1791 * @param array $importer Array of the importer user
1792 * @param object $data The message object
1794 * @return bool Success?
1796 private static function receive_message($importer, $data) {
1797 $author = notags(unxmlify($data->author));
1798 $guid = notags(unxmlify($data->guid));
1799 $conversation_guid = notags(unxmlify($data->conversation_guid));
1800 $text = unxmlify($data->text);
1801 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1803 $contact = self::allowed_contact_by_handle($importer, $author, true);
1808 $conversation = null;
1810 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1811 intval($importer["uid"]),
1812 dbesc($conversation_guid)
1815 $conversation = $c[0];
1817 logger("conversation not available.");
1821 $message_uri = $author.":".$guid;
1823 $person = self::person_by_handle($author);
1825 logger("unable to find author details");
1829 $body = diaspora2bb($text);
1831 $body = self::replace_people_guid($body, $person["url"]);
1835 $r = q("SELECT `id` FROM `mail` WHERE `guid` = '%s' AND `uid` = %d LIMIT 1",
1837 intval($importer["uid"])
1839 if (dbm::is_result($r)) {
1840 logger("duplicate message already delivered.", LOGGER_DEBUG);
1844 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1845 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1846 intval($importer["uid"]),
1848 intval($conversation["id"]),
1849 dbesc($person["name"]),
1850 dbesc($person["photo"]),
1851 dbesc($person["url"]),
1852 intval($contact["id"]),
1853 dbesc($conversation["subject"]),
1857 dbesc($message_uri),
1858 dbesc($author.":".$conversation["guid"]),
1864 dba::update('conv', array('updated' => datetime_convert()), array('id' => $conversation["id"]));
1869 * @brief Processes participations - unsupported by now
1871 * @param array $importer Array of the importer user
1872 * @param object $data The message object
1874 * @return bool always true
1876 private static function receive_participation($importer, $data) {
1877 // I'm not sure if we can fully support this message type
1882 * @brief Processes photos - unneeded
1884 * @param array $importer Array of the importer user
1885 * @param object $data The message object
1887 * @return bool always true
1889 private static function receive_photo($importer, $data) {
1890 // There doesn't seem to be a reason for this function, since the photo data is transmitted in the status message as well
1895 * @brief Processes poll participations - unssupported
1897 * @param array $importer Array of the importer user
1898 * @param object $data The message object
1900 * @return bool always true
1902 private static function receive_poll_participation($importer, $data) {
1903 // We don't support polls by now
1908 * @brief Processes incoming profile updates
1910 * @param array $importer Array of the importer user
1911 * @param object $data The message object
1913 * @return bool Success
1915 private static function receive_profile($importer, $data) {
1916 $author = strtolower(notags(unxmlify($data->author)));
1918 $contact = self::contact_by_handle($importer["uid"], $author);
1922 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
1923 $image_url = unxmlify($data->image_url);
1924 $birthday = unxmlify($data->birthday);
1925 $gender = unxmlify($data->gender);
1926 $about = diaspora2bb(unxmlify($data->bio));
1927 $location = diaspora2bb(unxmlify($data->location));
1928 $searchable = (unxmlify($data->searchable) == "true");
1929 $nsfw = (unxmlify($data->nsfw) == "true");
1930 $tags = unxmlify($data->tag_string);
1932 $tags = explode("#", $tags);
1934 $keywords = array();
1935 foreach ($tags as $tag) {
1936 $tag = trim(strtolower($tag));
1941 $keywords = implode(", ", $keywords);
1943 $handle_parts = explode("@", $author);
1944 $nick = $handle_parts[0];
1947 $name = $handle_parts[0];
1949 if ( preg_match("|^https?://|", $image_url) === 0)
1950 $image_url = "http://".$handle_parts[1].$image_url;
1952 update_contact_avatar($image_url, $importer["uid"], $contact["id"]);
1954 // Generic birthday. We don't know the timezone. The year is irrelevant.
1956 $birthday = str_replace("1000", "1901", $birthday);
1958 if ($birthday != "")
1959 $birthday = datetime_convert("UTC", "UTC", $birthday, "Y-m-d");
1961 // this is to prevent multiple birthday notifications in a single year
1962 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
1964 if (substr($birthday,5) === substr($contact["bd"],5))
1965 $birthday = $contact["bd"];
1967 $r = q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
1968 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
1972 dbesc(datetime_convert()),
1978 intval($contact["id"]),
1979 intval($importer["uid"])
1982 $gcontact = array("url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
1983 "photo" => $image_url, "name" => $name, "location" => $location,
1984 "about" => $about, "birthday" => $birthday, "gender" => $gender,
1985 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
1986 "hide" => !$searchable, "nsfw" => $nsfw);
1988 $gcid = update_gcontact($gcontact);
1990 link_gcontact($gcid, $importer["uid"], $contact["id"]);
1992 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
1998 * @brief Processes incoming friend requests
2000 * @param array $importer Array of the importer user
2001 * @param array $contact The contact that send the request
2003 private static function receive_request_make_friend($importer, $contact) {
2007 if ($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
2008 dba::update('contact', array('rel' => CONTACT_IS_FRIEND, 'writable' => true),
2009 array('id' => $contact["id"], 'uid' => $importer["uid"]));
2011 // send notification
2013 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
2014 intval($importer["uid"])
2017 if ($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(get_pconfig($importer["uid"], "system", "post_newfriend"))) {
2019 $self = q("SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
2020 intval($importer["uid"])
2023 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
2025 if ($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
2028 $arr["protocol"] = PROTOCOL_DIASPORA;
2029 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
2030 $arr["uid"] = $importer["uid"];
2031 $arr["contact-id"] = $self[0]["id"];
2033 $arr["type"] = 'wall';
2034 $arr["gravity"] = 0;
2036 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
2037 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
2038 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
2039 $arr["verb"] = ACTIVITY_FRIEND;
2040 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
2042 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
2043 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
2044 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
2045 $arr["body"] = sprintf(t("%1$s is now friends with %2$s"), $A, $B)."\n\n\n".$Bphoto;
2047 $arr["object"] = self::construct_new_friend_object($contact);
2049 $arr["last-child"] = 1;
2051 $arr["allow_cid"] = $user[0]["allow_cid"];
2052 $arr["allow_gid"] = $user[0]["allow_gid"];
2053 $arr["deny_cid"] = $user[0]["deny_cid"];
2054 $arr["deny_gid"] = $user[0]["deny_gid"];
2056 $i = item_store($arr);
2058 proc_run(PRIORITY_HIGH, "include/notifier.php", "activity", $i);
2064 * @brief Creates a XML object for a "new friend" message
2066 * @param array $contact Array of the contact
2068 * @return string The XML
2070 private static function construct_new_friend_object($contact) {
2071 $objtype = ACTIVITY_OBJ_PERSON;
2072 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
2073 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
2075 $xmldata = array("object" => array("type" => $objtype,
2076 "title" => $contact["name"],
2077 "id" => $contact["url"]."/".$contact["name"],
2080 return xml::from_array($xmldata, $xml, true);
2084 * @brief Processes incoming sharing notification
2086 * @param array $importer Array of the importer user
2087 * @param object $data The message object
2089 * @return bool Success
2091 private static function receive_contact_request($importer, $data) {
2092 $author = unxmlify($data->author);
2093 $recipient = unxmlify($data->recipient);
2095 if (!$author || !$recipient) {
2099 // the current protocol version doesn't know these fields
2100 // That means that we will assume their existance
2101 if (isset($data->following)) {
2102 $following = (unxmlify($data->following) == "true");
2107 if (isset($data->sharing)) {
2108 $sharing = (unxmlify($data->sharing) == "true");
2113 $contact = self::contact_by_handle($importer["uid"],$author);
2115 // perhaps we were already sharing with this person. Now they're sharing with us.
2116 // That makes us friends.
2118 if ($following && $sharing) {
2119 logger("Author ".$author." (Contact ".$contact["id"].") wants to have a bidirectional conection.", LOGGER_DEBUG);
2120 self::receive_request_make_friend($importer, $contact);
2122 // refetch the contact array
2123 $contact = self::contact_by_handle($importer["uid"],$author);
2125 // If we are now friends, we are sending a share message.
2126 // Normally we needn't to do so, but the first message could have been vanished.
2127 if (in_array($contact["rel"], array(CONTACT_IS_FRIEND, CONTACT_IS_FOLLOWER))) {
2128 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2130 logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2131 $ret = self::send_share($u[0], $contact);
2135 } else { /// @todo Handle all possible variations of adding and retracting of permissions
2136 logger("Author ".$author." (Contact ".$contact["id"].") wants to change the relationship: Following: ".$following." - sharing: ".$sharing. "(By now unsupported)", LOGGER_DEBUG);
2141 if (!$following && $sharing && in_array($importer["page-flags"], array(PAGE_SOAPBOX, PAGE_NORMAL))) {
2142 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
2144 } elseif (!$following && !$sharing) {
2145 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
2147 } elseif (!$following && $sharing) {
2148 logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
2149 } elseif ($following && $sharing) {
2150 logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
2151 } elseif ($following && !$sharing) {
2152 logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
2155 $ret = self::person_by_handle($author);
2157 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
2158 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
2162 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
2164 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
2165 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
2166 intval($importer["uid"]),
2167 dbesc($ret["network"]),
2168 dbesc($ret["addr"]),
2171 dbesc(normalise_link($ret["url"])),
2173 dbesc($ret["name"]),
2174 dbesc($ret["nick"]),
2175 dbesc($ret["photo"]),
2176 dbesc($ret["pubkey"]),
2177 dbesc($ret["notify"]),
2178 dbesc($ret["poll"]),
2183 // find the contact record we just created
2185 $contact_record = self::contact_by_handle($importer["uid"],$author);
2187 if (!$contact_record) {
2188 logger("unable to locate newly created contact record.");
2192 logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
2194 $def_gid = get_default_group($importer['uid'], $ret["network"]);
2196 if (intval($def_gid))
2197 group_add_member($importer["uid"], "", $contact_record["id"], $def_gid);
2199 update_contact_avatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
2201 if ($importer["page-flags"] == PAGE_NORMAL) {
2203 logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
2205 $hash = random_string().(string)time(); // Generate a confirm_key
2207 $ret = q("INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
2208 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
2209 intval($importer["uid"]),
2210 intval($contact_record["id"]),
2213 dbesc(t("Sharing notification from Diaspora network")),
2215 dbesc(datetime_convert())
2219 // automatic friend approval
2221 logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
2223 update_contact_avatar($contact_record["photo"],$importer["uid"],$contact_record["id"]);
2225 // technically they are sharing with us (CONTACT_IS_SHARING),
2226 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
2227 // we are going to change the relationship and make them a follower.
2229 if (($importer["page-flags"] == PAGE_FREELOVE) && $sharing && $following)
2230 $new_relation = CONTACT_IS_FRIEND;
2231 elseif (($importer["page-flags"] == PAGE_FREELOVE) && $sharing)
2232 $new_relation = CONTACT_IS_SHARING;
2234 $new_relation = CONTACT_IS_FOLLOWER;
2236 $r = q("UPDATE `contact` SET `rel` = %d,
2244 intval($new_relation),
2245 dbesc(datetime_convert()),
2246 dbesc(datetime_convert()),
2247 intval($contact_record["id"])
2250 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2252 logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2253 $ret = self::send_share($u[0], $contact_record);
2255 // Send the profile data, maybe it weren't transmitted before
2256 self::send_profile($importer["uid"], array($contact_record));
2264 * @brief Fetches a message with a given guid
2266 * @param string $guid message guid
2267 * @param string $orig_author handle of the original post
2268 * @param string $author handle of the sharer
2270 * @return array The fetched item
2272 private static function original_item($guid, $orig_author, $author) {
2274 // Do we already have this item?
2275 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2276 `author-name`, `author-link`, `author-avatar`
2277 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2280 if (dbm::is_result($r)) {
2281 logger("reshared message ".$guid." already exists on system.");
2283 // Maybe it is already a reshared item?
2284 // Then refetch the content, if it is a reshare from a reshare.
2285 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2286 if (self::is_reshare($r[0]["body"], true)) {
2288 } elseif (self::is_reshare($r[0]["body"], false)) {
2289 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2291 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2293 // Add OEmbed and other information to the body
2294 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
2302 if (!dbm::is_result($r)) {
2303 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2304 logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2305 $item_id = self::store_by_guid($guid, $server);
2308 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2309 logger("2nd try: reshared message ".$guid." will be fetched without SLL from the server ".$server);
2310 $item_id = self::store_by_guid($guid, $server);
2314 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2315 `author-name`, `author-link`, `author-avatar`
2316 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2319 if (dbm::is_result($r)) {
2320 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2321 if (self::is_reshare($r[0]["body"], false)) {
2322 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2323 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2335 * @brief Processes a reshare message
2337 * @param array $importer Array of the importer user
2338 * @param object $data The message object
2339 * @param string $xml The original XML of the message
2341 * @return int the message id
2343 private static function receive_reshare($importer, $data, $xml) {
2344 $author = notags(unxmlify($data->author));
2345 $guid = notags(unxmlify($data->guid));
2346 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2347 $root_author = notags(unxmlify($data->root_author));
2348 $root_guid = notags(unxmlify($data->root_guid));
2349 /// @todo handle unprocessed property "provider_display_name"
2350 $public = notags(unxmlify($data->public));
2352 $contact = self::allowed_contact_by_handle($importer, $author, false);
2357 $message_id = self::message_exists($importer["uid"], $guid);
2362 $original_item = self::original_item($root_guid, $root_author, $author);
2363 if (!$original_item) {
2367 $orig_url = System::baseUrl()."/display/".$original_item["guid"];
2369 $datarray = array();
2371 $datarray["uid"] = $importer["uid"];
2372 $datarray["contact-id"] = $contact["id"];
2373 $datarray["network"] = NETWORK_DIASPORA;
2375 $datarray["author-name"] = $contact["name"];
2376 $datarray["author-link"] = $contact["url"];
2377 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2379 $datarray["owner-name"] = $datarray["author-name"];
2380 $datarray["owner-link"] = $datarray["author-link"];
2381 $datarray["owner-avatar"] = $datarray["author-avatar"];
2383 $datarray["guid"] = $guid;
2384 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2386 $datarray["verb"] = ACTIVITY_POST;
2387 $datarray["gravity"] = GRAVITY_PARENT;
2389 $datarray["protocol"] = PROTOCOL_DIASPORA;
2390 $datarray["source"] = $xml;
2392 $prefix = share_header($original_item["author-name"], $original_item["author-link"], $original_item["author-avatar"],
2393 $original_item["guid"], $original_item["created"], $orig_url);
2394 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2396 $datarray["tag"] = $original_item["tag"];
2397 $datarray["app"] = $original_item["app"];
2399 $datarray["plink"] = self::plink($author, $guid);
2400 $datarray["private"] = (($public == "false") ? 1 : 0);
2401 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2403 $datarray["object-type"] = $original_item["object-type"];
2405 self::fetch_guid($datarray);
2406 $message_id = item_store($datarray);
2409 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2417 * @brief Processes retractions
2419 * @param array $importer Array of the importer user
2420 * @param array $contact The contact of the item owner
2421 * @param object $data The message object
2423 * @return bool success
2425 private static function item_retraction($importer, $contact, $data) {
2426 $author = notags(unxmlify($data->author));
2427 $target_guid = notags(unxmlify($data->target_guid));
2428 $target_type = notags(unxmlify($data->target_type));
2430 $person = self::person_by_handle($author);
2431 if (!is_array($person)) {
2432 logger("unable to find author detail for ".$author);
2436 if (!isset($contact["url"])) {
2437 $contact["url"] = $person["url"];
2440 $r = q("SELECT `id`, `parent`, `parent-uri`, `author-link` FROM `item` WHERE `guid` = '%s' AND `uid` = %d AND NOT `file` LIKE '%%[%%' LIMIT 1",
2441 dbesc($target_guid),
2442 intval($importer["uid"])
2445 logger("Target guid ".$target_guid." was not found for user ".$importer["uid"]);
2449 // Check if the sender is the thread owner
2450 $p = q("SELECT `id`, `author-link`, `origin` FROM `item` WHERE `id` = %d",
2451 intval($r[0]["parent"]));
2453 // Only delete it if the parent author really fits
2454 if (!link_compare($p[0]["author-link"], $contact["url"]) && !link_compare($r[0]["author-link"], $contact["url"])) {
2455 logger("Thread author ".$p[0]["author-link"]." and item author ".$r[0]["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2459 // Currently we don't have a central deletion function that we could use in this case. The function "item_drop" doesn't work for that case
2460 dba::update('item', array('deleted' => true, 'title' => '', 'body' => '',
2461 'edited' => datetime_convert(), 'changed' => datetime_convert()),
2462 array('id' => $r[0]["id"]));
2464 delete_thread($r[0]["id"], $r[0]["parent-uri"]);
2466 logger("Deleted target ".$target_guid." (".$r[0]["id"].") from user ".$importer["uid"]." parent: ".$p[0]["id"], LOGGER_DEBUG);
2468 // Now check if the retraction needs to be relayed by us
2469 if ($p[0]["origin"]) {
2471 proc_run(PRIORITY_HIGH, "include/notifier.php", "drop", $r[0]["id"]);
2478 * @brief Receives retraction messages
2480 * @param array $importer Array of the importer user
2481 * @param string $sender The sender of the message
2482 * @param object $data The message object
2484 * @return bool Success
2486 private static function receive_retraction($importer, $sender, $data) {
2487 $target_type = notags(unxmlify($data->target_type));
2489 $contact = self::contact_by_handle($importer["uid"], $sender);
2490 if (!$contact && (in_array($target_type, array("Contact", "Person")))) {
2491 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2495 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2497 switch ($target_type) {
2502 case "StatusMessage":
2503 return self::item_retraction($importer, $contact, $data);
2507 /// @todo What should we do with an "unshare"?
2508 // Removing the contact isn't correct since we still can read the public items
2509 contact_remove($contact["id"]);
2513 logger("Unknown target type ".$target_type);
2520 * @brief Receives status messages
2522 * @param array $importer Array of the importer user
2523 * @param object $data The message object
2524 * @param string $xml The original XML of the message
2526 * @return int The message id of the newly created item
2528 private static function receive_status_message($importer, $data, $xml) {
2529 $author = notags(unxmlify($data->author));
2530 $guid = notags(unxmlify($data->guid));
2531 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2532 $public = notags(unxmlify($data->public));
2533 $text = unxmlify($data->text);
2534 $provider_display_name = notags(unxmlify($data->provider_display_name));
2536 $contact = self::allowed_contact_by_handle($importer, $author, false);
2541 $message_id = self::message_exists($importer["uid"], $guid);
2547 if ($data->location) {
2548 foreach ($data->location->children() AS $fieldname => $data) {
2549 $address[$fieldname] = notags(unxmlify($data));
2553 $body = diaspora2bb($text);
2555 $datarray = array();
2557 // Attach embedded pictures to the body
2559 foreach ($data->photo AS $photo) {
2560 $body = "[img]".unxmlify($photo->remote_photo_path).
2561 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2564 $datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
2566 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2568 // Add OEmbed and other information to the body
2569 if (!self::is_redmatrix($contact["url"])) {
2570 $body = add_page_info_to_body($body, false, true);
2574 /// @todo enable support for polls
2575 //if ($data->poll) {
2576 // foreach ($data->poll AS $poll)
2581 /// @todo enable support for events
2583 $datarray["uid"] = $importer["uid"];
2584 $datarray["contact-id"] = $contact["id"];
2585 $datarray["network"] = NETWORK_DIASPORA;
2587 $datarray["author-name"] = $contact["name"];
2588 $datarray["author-link"] = $contact["url"];
2589 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2591 $datarray["owner-name"] = $datarray["author-name"];
2592 $datarray["owner-link"] = $datarray["author-link"];
2593 $datarray["owner-avatar"] = $datarray["author-avatar"];
2595 $datarray["guid"] = $guid;
2596 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2598 $datarray["verb"] = ACTIVITY_POST;
2599 $datarray["gravity"] = GRAVITY_PARENT;
2601 $datarray["protocol"] = PROTOCOL_DIASPORA;
2602 $datarray["source"] = $xml;
2604 $datarray["body"] = self::replace_people_guid($body, $contact["url"]);
2606 if ($provider_display_name != "") {
2607 $datarray["app"] = $provider_display_name;
2610 $datarray["plink"] = self::plink($author, $guid);
2611 $datarray["private"] = (($public == "false") ? 1 : 0);
2612 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2614 if (isset($address["address"])) {
2615 $datarray["location"] = $address["address"];
2618 if (isset($address["lat"]) && isset($address["lng"])) {
2619 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2622 self::fetch_guid($datarray);
2623 $message_id = item_store($datarray);
2626 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2633 /* ************************************************************************************** *
2634 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2635 * ************************************************************************************** */
2638 * @brief returnes the handle of a contact
2640 * @param array $me contact array
2642 * @return string the handle in the format user@domain.tld
2644 private static function my_handle($contact) {
2645 if ($contact["addr"] != "") {
2646 return $contact["addr"];
2649 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2650 // So - just in case - we build the the address here.
2651 if ($contact["nickname"] != "") {
2652 $nick = $contact["nickname"];
2654 $nick = $contact["nick"];
2657 return $nick."@".substr(System::baseUrl(), strpos(System::baseUrl(),"://") + 3);
2662 * @brief Creates the data for a private message in the new format
2664 * @param string $msg The message that is to be transmitted
2665 * @param array $user The record of the sender
2666 * @param array $contact Target of the communication
2667 * @param string $prvkey The private key of the sender
2668 * @param string $pubkey The public key of the receiver
2670 * @return string The encrypted data
2672 public static function encode_private_data($msg, $user, $contact, $prvkey, $pubkey) {
2674 logger("Message: ".$msg, LOGGER_DATA);
2676 // without a public key nothing will work
2678 logger("pubkey missing: contact id: ".$contact["id"]);
2682 $aes_key = openssl_random_pseudo_bytes(32);
2683 $b_aes_key = base64_encode($aes_key);
2684 $iv = openssl_random_pseudo_bytes(16);
2685 $b_iv = base64_encode($iv);
2687 $ciphertext = self::aes_encrypt($aes_key, $iv, $msg);
2689 $json = json_encode(array("iv" => $b_iv, "key" => $b_aes_key));
2691 $encrypted_key_bundle = "";
2692 openssl_public_encrypt($json, $encrypted_key_bundle, $pubkey);
2694 $json_object = json_encode(array("aes_key" => base64_encode($encrypted_key_bundle),
2695 "encrypted_magic_envelope" => base64_encode($ciphertext)));
2697 return $json_object;
2701 * @brief Creates the envelope for the "fetch" endpoint and for the new format
2703 * @param string $msg The message that is to be transmitted
2704 * @param array $user The record of the sender
2706 * @return string The envelope
2708 public static function build_magic_envelope($msg, $user) {
2710 $b64url_data = base64url_encode($msg);
2711 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2713 $key_id = base64url_encode(self::my_handle($user));
2714 $type = "application/xml";
2715 $encoding = "base64url";
2716 $alg = "RSA-SHA256";
2717 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2719 // Fallback if the private key wasn't transmitted in the expected field
2720 if ($user['uprvkey'] == "")
2721 $user['uprvkey'] = $user['prvkey'];
2723 $signature = rsa_sign($signable_data, $user["uprvkey"]);
2724 $sig = base64url_encode($signature);
2726 $xmldata = array("me:env" => array("me:data" => $data,
2727 "@attributes" => array("type" => $type),
2728 "me:encoding" => $encoding,
2731 "@attributes2" => array("key_id" => $key_id)));
2733 $namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
2735 return xml::from_array($xmldata, $xml, false, $namespaces);
2739 * @brief Create the envelope for a message
2741 * @param string $msg The message that is to be transmitted
2742 * @param array $user The record of the sender
2743 * @param array $contact Target of the communication
2744 * @param string $prvkey The private key of the sender
2745 * @param string $pubkey The public key of the receiver
2746 * @param bool $public Is the message public?
2748 * @return string The message that will be transmitted to other servers
2750 private static function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
2752 // The message is put into an envelope with the sender's signature
2753 $envelope = self::build_magic_envelope($msg, $user);
2755 // Private messages are put into a second envelope, encrypted with the receivers public key
2757 $envelope = self::encode_private_data($envelope, $user, $contact, $prvkey, $pubkey);
2764 * @brief Creates a signature for a message
2766 * @param array $owner the array of the owner of the message
2767 * @param array $message The message that is to be signed
2769 * @return string The signature
2771 private static function signature($owner, $message) {
2773 unset($sigmsg["author_signature"]);
2774 unset($sigmsg["parent_author_signature"]);
2776 $signed_text = implode(";", $sigmsg);
2778 return base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
2782 * @brief Transmit a message to a target server
2784 * @param array $owner the array of the item owner
2785 * @param array $contact Target of the communication
2786 * @param string $envelope The message that is to be transmitted
2787 * @param bool $public_batch Is it a public post?
2788 * @param bool $queue_run Is the transmission called from the queue?
2789 * @param string $guid message guid
2791 * @return int Result of the transmission
2793 public static function transmit($owner, $contact, $envelope, $public_batch, $queue_run=false, $guid = "") {
2797 $enabled = intval(get_config("system", "diaspora_enabled"));
2801 $logid = random_string(4);
2802 $dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
2804 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
2808 logger("transmit: ".$logid."-".$guid." ".$dest_url);
2810 if (!$queue_run && was_recently_delayed($contact["id"])) {
2813 if (!intval(get_config("system", "diaspora_test"))) {
2814 $content_type = (($public_batch) ? "application/magic-envelope+xml" : "application/json");
2816 post_url($dest_url."/", $envelope, array("Content-Type: ".$content_type));
2817 $return_code = $a->get_curl_code();
2819 logger("test_mode");
2824 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
2826 if (!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
2827 logger("queue message");
2829 $r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
2830 intval($contact["id"]),
2831 dbesc(NETWORK_DIASPORA),
2833 intval($public_batch)
2836 logger("add_to_queue ignored - identical item already in queue");
2838 // queue message for redelivery
2839 add_to_queue($contact["id"], NETWORK_DIASPORA, $envelope, $public_batch);
2841 // The message could not be delivered. We mark the contact as "dead"
2842 mark_for_death($contact);
2844 } elseif (($return_code >= 200) && ($return_code <= 299)) {
2845 // We successfully delivered a message, the contact is alive
2846 unmark_for_death($contact);
2849 return(($return_code) ? $return_code : (-1));
2854 * @brief Build the post xml
2856 * @param string $type The message type
2857 * @param array $message The message data
2859 * @return string The post XML
2861 public static function build_post_xml($type, $message) {
2863 $data = array($type => $message);
2865 return xml::from_array($data, $xml);
2869 * @brief Builds and transmit messages
2871 * @param array $owner the array of the item owner
2872 * @param array $contact Target of the communication
2873 * @param string $type The message type
2874 * @param array $message The message data
2875 * @param bool $public_batch Is it a public post?
2876 * @param string $guid message guid
2877 * @param bool $spool Should the transmission be spooled or transmitted?
2879 * @return int Result of the transmission
2881 private static function build_and_transmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false) {
2883 $msg = self::build_post_xml($type, $message);
2885 logger('message: '.$msg, LOGGER_DATA);
2886 logger('send guid '.$guid, LOGGER_DEBUG);
2888 // Fallback if the private key wasn't transmitted in the expected field
2889 if ($owner['uprvkey'] == "")
2890 $owner['uprvkey'] = $owner['prvkey'];
2892 $envelope = self::build_message($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
2895 add_to_queue($contact['id'], NETWORK_DIASPORA, $envelope, $public_batch);
2898 $return_code = self::transmit($owner, $contact, $envelope, $public_batch, false, $guid);
2900 logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
2902 return $return_code;
2906 * @brief Sends a "share" message
2908 * @param array $owner the array of the item owner
2909 * @param array $contact Target of the communication
2911 * @return int The result of the transmission
2913 public static function send_share($owner, $contact) {
2916 * @todo support the different possible combinations of "following" and "sharing"
2917 * Currently, Diaspora only interprets the "sharing" field
2919 * Before switching this code productive, we have to check all "send_share" calls if "rel" is set correctly
2923 switch ($contact["rel"]) {
2924 case CONTACT_IS_FRIEND:
2927 case CONTACT_IS_SHARING:
2930 case CONTACT_IS_FOLLOWER:
2936 $message = array("author" => self::my_handle($owner),
2937 "recipient" => $contact["addr"],
2938 "following" => "true",
2939 "sharing" => "true");
2941 logger("Send share ".print_r($message, true), LOGGER_DEBUG);
2943 return self::build_and_transmit($owner, $contact, "contact", $message);
2947 * @brief sends an "unshare"
2949 * @param array $owner the array of the item owner
2950 * @param array $contact Target of the communication
2952 * @return int The result of the transmission
2954 public static function send_unshare($owner, $contact) {
2956 $message = array("author" => self::my_handle($owner),
2957 "recipient" => $contact["addr"],
2958 "following" => "false",
2959 "sharing" => "false");
2961 logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
2963 return self::build_and_transmit($owner, $contact, "contact", $message);
2967 * @brief Checks a message body if it is a reshare
2969 * @param string $body The message body that is to be check
2970 * @param bool $complete Should it be a complete check or a simple check?
2972 * @return array|bool Reshare details or "false" if no reshare
2974 public static function is_reshare($body, $complete = true) {
2975 $body = trim($body);
2977 // Skip if it isn't a pure repeated messages
2978 // Does it start with a share?
2979 if ((strpos($body, "[share") > 0) && $complete)
2982 // Does it end with a share?
2983 if (strlen($body) > (strrpos($body, "[/share]") + 8))
2986 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2987 // Skip if there is no shared message in there
2988 if ($body == $attributes)
2991 // If we don't do the complete check we quit here
2996 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2997 if ($matches[1] != "")
2998 $guid = $matches[1];
3000 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
3001 if ($matches[1] != "")
3002 $guid = $matches[1];
3005 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
3006 dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
3009 $ret["root_handle"] = self::handle_from_contact($r[0]["contact-id"]);
3010 $ret["root_guid"] = $guid;
3016 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
3017 if ($matches[1] != "")
3018 $profile = $matches[1];
3020 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
3021 if ($matches[1] != "")
3022 $profile = $matches[1];
3026 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
3027 if (($ret["root_handle"] == $profile) || ($ret["root_handle"] == ""))
3031 preg_match("/link='(.*?)'/ism", $attributes, $matches);
3032 if ($matches[1] != "")
3033 $link = $matches[1];
3035 preg_match('/link="(.*?)"/ism', $attributes, $matches);
3036 if ($matches[1] != "")
3037 $link = $matches[1];
3039 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
3040 if (($ret["root_guid"] == $link) || (trim($ret["root_guid"]) == ""))
3047 * @brief Create an event array
3049 * @param integer $event_id The id of the event
3051 * @return array with event data
3053 private static function build_event($event_id) {
3055 $r = q("SELECT `guid`, `uid`, `start`, `finish`, `nofinish`, `summary`, `desc`, `location`, `adjust` FROM `event` WHERE `id` = %d", intval($event_id));
3056 if (!dbm::is_result($r)) {
3062 $eventdata = array();
3064 $r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d", intval($event['uid']));
3065 if (!dbm::is_result($r)) {
3071 $r = q("SELECT `addr`, `nick` FROM `contact` WHERE `uid` = %d AND `self`", intval($event['uid']));
3072 if (!dbm::is_result($r)) {
3078 $eventdata['author'] = self::my_handle($owner);
3080 if ($event['guid']) {
3081 $eventdata['guid'] = $event['guid'];
3084 $mask = 'Y-m-d\TH:i:s\Z';
3086 /// @todo - establish "all day" events in Friendica
3087 $eventdata["all_day"] = "false";
3089 if (!$event['adjust']) {
3090 $eventdata['timezone'] = $user['timezone'];
3092 if ($eventdata['timezone'] == "") {
3093 $eventdata['timezone'] = 'UTC';
3097 if ($event['start']) {
3098 $eventdata['start'] = datetime_convert($eventdata['timezone'], "UTC", $event['start'], $mask);
3100 if ($event['finish'] && !$event['nofinish']) {
3101 $eventdata['end'] = datetime_convert($eventdata['timezone'], "UTC", $event['finish'], $mask);
3103 if ($event['summary']) {
3104 $eventdata['summary'] = html_entity_decode(bb2diaspora($event['summary']));
3106 if ($event['desc']) {
3107 $eventdata['description'] = html_entity_decode(bb2diaspora($event['desc']));
3109 if ($event['location']) {
3110 $location = array();
3111 $location["address"] = html_entity_decode(bb2diaspora($event['location']));
3112 $location["lat"] = 0;
3113 $location["lng"] = 0;
3114 $eventdata['location'] = $location;
3121 * @brief Create a post (status message or reshare)
3123 * @param array $item The item that will be exported
3124 * @param array $owner the array of the item owner
3127 * 'type' -> Message type ("status_message" or "reshare")
3128 * 'message' -> Array of XML elements of the status
3130 public static function build_status($item, $owner) {
3132 $cachekey = "diaspora:build_status:".$item['guid'];
3134 $result = Cache::get($cachekey);
3135 if (!is_null($result)) {
3139 $myaddr = self::my_handle($owner);
3141 $public = (($item["private"]) ? "false" : "true");
3143 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3145 // Detect a share element and do a reshare
3146 if (!$item['private'] && ($ret = self::is_reshare($item["body"]))) {
3147 $message = array("author" => $myaddr,
3148 "guid" => $item["guid"],
3149 "created_at" => $created,
3150 "root_author" => $ret["root_handle"],
3151 "root_guid" => $ret["root_guid"],
3152 "provider_display_name" => $item["app"],
3153 "public" => $public);
3157 $title = $item["title"];
3158 $body = $item["body"];
3160 // convert to markdown
3161 $body = html_entity_decode(bb2diaspora($body));
3165 $body = "## ".html_entity_decode($title)."\n\n".$body;
3167 if ($item["attach"]) {
3168 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
3170 $body .= "\n".t("Attachments:")."\n";
3171 foreach ($matches as $mtch)
3172 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
3176 $location = array();
3178 if ($item["location"] != "")
3179 $location["address"] = $item["location"];
3181 if ($item["coord"] != "") {
3182 $coord = explode(" ", $item["coord"]);
3183 $location["lat"] = $coord[0];
3184 $location["lng"] = $coord[1];
3187 $message = array("author" => $myaddr,
3188 "guid" => $item["guid"],
3189 "created_at" => $created,
3190 "public" => $public,
3192 "provider_display_name" => $item["app"],
3193 "location" => $location);
3195 // Diaspora rejects messages when they contain a location without "lat" or "lng"
3196 if (!isset($location["lat"]) || !isset($location["lng"])) {
3197 unset($message["location"]);
3200 if ($item['event-id'] > 0) {
3201 $event = self::build_event($item['event-id']);
3202 if (count($event)) {
3203 $message['event'] = $event;
3205 /// @todo Once Diaspora supports it, we will remove the body
3206 // $message['text'] = '';
3210 $type = "status_message";
3213 $msg = array("type" => $type, "message" => $message);
3215 Cache::set($cachekey, $msg, CACHE_QUARTER_HOUR);
3221 * @brief Sends a post
3223 * @param array $item The item that will be exported
3224 * @param array $owner the array of the item owner
3225 * @param array $contact Target of the communication
3226 * @param bool $public_batch Is it a public post?
3228 * @return int The result of the transmission
3230 public static function send_status($item, $owner, $contact, $public_batch = false) {
3232 $status = self::build_status($item, $owner);
3234 return self::build_and_transmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
3238 * @brief Creates a "like" object
3240 * @param array $item The item that will be exported
3241 * @param array $owner the array of the item owner
3243 * @return array The data for a "like"
3245 private static function construct_like($item, $owner) {
3247 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3248 dbesc($item["thr-parent"]));
3249 if (!dbm::is_result($p))
3254 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3255 if ($item['verb'] === ACTIVITY_LIKE) {
3257 } elseif ($item['verb'] === ACTIVITY_DISLIKE) {
3258 $positive = "false";
3261 return(array("author" => self::my_handle($owner),
3262 "guid" => $item["guid"],
3263 "parent_guid" => $parent["guid"],
3264 "parent_type" => $target_type,
3265 "positive" => $positive,
3266 "author_signature" => ""));
3270 * @brief Creates an "EventParticipation" object
3272 * @param array $item The item that will be exported
3273 * @param array $owner the array of the item owner
3275 * @return array The data for an "EventParticipation"
3277 private static function construct_attend($item, $owner) {
3279 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3280 dbesc($item["thr-parent"]));
3281 if (!dbm::is_result($p))
3286 switch ($item['verb']) {
3287 case ACTIVITY_ATTEND:
3288 $attend_answer = 'accepted';
3290 case ACTIVITY_ATTENDNO:
3291 $attend_answer = 'declined';
3293 case ACTIVITY_ATTENDMAYBE:
3294 $attend_answer = 'tentative';
3297 logger('Unknown verb '.$item['verb'].' in item '.$item['guid']);
3301 return(array("author" => self::my_handle($owner),
3302 "guid" => $item["guid"],
3303 "parent_guid" => $parent["guid"],
3304 "status" => $attend_answer,
3305 "author_signature" => ""));
3309 * @brief Creates the object for a comment
3311 * @param array $item The item that will be exported
3312 * @param array $owner the array of the item owner
3314 * @return array The data for a comment
3316 private static function construct_comment($item, $owner) {
3318 $cachekey = "diaspora:construct_comment:".$item['guid'];
3320 $result = Cache::get($cachekey);
3321 if (!is_null($result)) {
3325 $p = q("SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
3326 intval($item["parent"]),
3327 intval($item["parent"])
3330 if (!dbm::is_result($p))
3335 $text = html_entity_decode(bb2diaspora($item["body"]));
3336 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3338 $comment = array("author" => self::my_handle($owner),
3339 "guid" => $item["guid"],
3340 "created_at" => $created,
3341 "parent_guid" => $parent["guid"],
3343 "author_signature" => "");
3345 // Send the thread parent guid only if it is a threaded comment
3346 if ($item['thr-parent'] != $item['parent-uri']) {
3347 $comment['thread_parent_guid'] = self::get_guid_from_uri($item['thr-parent'], $item['uid']);
3350 Cache::set($cachekey, $comment, CACHE_QUARTER_HOUR);
3356 * @brief Send a like or a comment
3358 * @param array $item The item that will be exported
3359 * @param array $owner the array of the item owner
3360 * @param array $contact Target of the communication
3361 * @param bool $public_batch Is it a public post?
3363 * @return int The result of the transmission
3365 public static function send_followup($item,$owner,$contact,$public_batch = false) {
3367 if (in_array($item['verb'], array(ACTIVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE))) {
3368 $message = self::construct_attend($item, $owner);
3369 $type = "event_participation";
3370 } elseif (in_array($item["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE))) {
3371 $message = self::construct_like($item, $owner);
3374 $message = self::construct_comment($item, $owner);
3381 $message["author_signature"] = self::signature($owner, $message);
3383 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3387 * @brief Creates a message from a signature record entry
3389 * @param array $item The item that will be exported
3390 * @param array $signature The entry of the "sign" record
3392 * @return string The message
3394 private static function message_from_signature($item, $signature) {
3396 // Split the signed text
3397 $signed_parts = explode(";", $signature['signed_text']);
3399 if ($item["deleted"])
3400 $message = array("author" => $signature['signer'],
3401 "target_guid" => $signed_parts[0],
3402 "target_type" => $signed_parts[1]);
3403 elseif ($item['verb'] === ACTIVITY_LIKE)
3404 $message = array("author" => $signed_parts[4],
3405 "guid" => $signed_parts[1],
3406 "parent_guid" => $signed_parts[3],
3407 "parent_type" => $signed_parts[2],
3408 "positive" => $signed_parts[0],
3409 "author_signature" => $signature['signature'],
3410 "parent_author_signature" => "");
3412 // Remove the comment guid
3413 $guid = array_shift($signed_parts);
3415 // Remove the parent guid
3416 $parent_guid = array_shift($signed_parts);
3418 // Remove the handle
3419 $handle = array_pop($signed_parts);
3421 // Glue the parts together
3422 $text = implode(";", $signed_parts);
3424 $message = array("author" => $handle,
3426 "parent_guid" => $parent_guid,
3427 "text" => implode(";", $signed_parts),
3428 "author_signature" => $signature['signature'],
3429 "parent_author_signature" => "");
3435 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
3437 * @param array $item The item that will be exported
3438 * @param array $owner the array of the item owner
3439 * @param array $contact Target of the communication
3440 * @param bool $public_batch Is it a public post?
3442 * @return int The result of the transmission
3444 public static function send_relay($item, $owner, $contact, $public_batch = false) {
3446 if ($item["deleted"])
3447 return self::send_retraction($item, $owner, $contact, $public_batch, true);
3448 elseif ($item['verb'] === ACTIVITY_LIKE)
3453 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3455 // fetch the original signature
3457 $r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3458 intval($item["id"]));
3461 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3467 // Old way - is used by the internal Friendica functions
3468 /// @todo Change all signatur storing functions to the new format
3469 if ($signature['signed_text'] && $signature['signature'] && $signature['signer'])
3470 $message = self::message_from_signature($item, $signature);
3472 $msg = json_decode($signature['signed_text'], true);
3475 if (is_array($msg)) {
3476 foreach ($msg AS $field => $data) {
3477 if (!$item["deleted"]) {
3478 if ($field == "diaspora_handle") {
3481 if ($field == "target_type") {
3482 $field = "parent_type";
3486 $message[$field] = $data;
3489 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3492 $message["parent_author_signature"] = self::signature($owner, $message);
3494 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3496 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3500 * @brief Sends a retraction (deletion) of a message, like or comment
3502 * @param array $item The item that will be exported
3503 * @param array $owner the array of the item owner
3504 * @param array $contact Target of the communication
3505 * @param bool $public_batch Is it a public post?
3506 * @param bool $relay Is the retraction transmitted from a relay?
3508 * @return int The result of the transmission
3510 public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
3512 $itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
3514 $msg_type = "retraction";
3515 $target_type = "Post";
3517 $message = array("author" => $itemaddr,
3518 "target_guid" => $item['guid'],
3519 "target_type" => $target_type);
3521 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
3523 return self::build_and_transmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
3527 * @brief Sends a mail
3529 * @param array $item The item that will be exported
3530 * @param array $owner The owner
3531 * @param array $contact Target of the communication
3533 * @return int The result of the transmission
3535 public static function send_mail($item, $owner, $contact) {
3537 $myaddr = self::my_handle($owner);
3539 $r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3540 intval($item["convid"]),
3541 intval($item["uid"])
3544 if (!dbm::is_result($r)) {
3545 logger("conversation not found.");
3551 "author" => $cnv["creator"],
3552 "guid" => $cnv["guid"],
3553 "subject" => $cnv["subject"],
3554 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d\TH:i:s\Z'),
3555 "participants" => $cnv["recips"]
3558 $body = bb2diaspora($item["body"]);
3559 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3562 "author" => $myaddr,
3563 "guid" => $item["guid"],
3564 "conversation_guid" => $cnv["guid"],
3566 "created_at" => $created,
3569 if ($item["reply"]) {
3574 "author" => $cnv["creator"],
3575 "guid" => $cnv["guid"],
3576 "subject" => $cnv["subject"],
3577 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d\TH:i:s\Z'),
3578 "participants" => $cnv["recips"],
3581 $type = "conversation";
3584 return self::build_and_transmit($owner, $contact, $type, $message, false, $item["guid"]);
3588 * @brief Sends profile data
3590 * @param int $uid The user id
3592 public static function send_profile($uid, $recips = false) {
3598 $recips = q("SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
3599 AND `uid` = %d AND `rel` != %d",
3600 dbesc(NETWORK_DIASPORA),
3602 intval(CONTACT_IS_SHARING)
3607 $r = q("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
3609 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
3610 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
3611 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
3620 $handle = $profile["addr"];
3621 $first = ((strpos($profile['name'],' ')
3622 ? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']));
3623 $last = (($first === $profile['name']) ? '' : trim(substr($profile['name'], strlen($first))));
3624 $large = System::baseUrl().'/photo/custom/300/'.$profile['uid'].'.jpg';
3625 $medium = System::baseUrl().'/photo/custom/100/'.$profile['uid'].'.jpg';
3626 $small = System::baseUrl().'/photo/custom/50/' .$profile['uid'].'.jpg';
3627 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
3629 if ($searchable === 'true') {
3630 $dob = '1000-00-00';
3632 if (($profile['dob']) && ($profile['dob'] > '0001-01-01'))
3633 $dob = ((intval($profile['dob'])) ? intval($profile['dob']) : '1000') .'-'. datetime_convert('UTC','UTC',$profile['dob'],'m-d');
3635 $about = $profile['about'];
3636 $about = strip_tags(bbcode($about));
3638 $location = formatted_location($profile);
3640 if ($profile['pub_keywords']) {
3641 $kw = str_replace(',',' ',$profile['pub_keywords']);
3642 $kw = str_replace(' ',' ',$kw);
3643 $arr = explode(' ',$profile['pub_keywords']);
3645 for ($x = 0; $x < 5; $x ++) {
3647 $tags .= '#'. trim($arr[$x]) .' ';
3651 $tags = trim($tags);
3654 $message = array("author" => $handle,
3655 "first_name" => $first,
3656 "last_name" => $last,
3657 "image_url" => $large,
3658 "image_url_medium" => $medium,
3659 "image_url_small" => $small,
3661 "gender" => $profile['gender'],
3663 "location" => $location,
3664 "searchable" => $searchable,
3666 "tag_string" => $tags);
3668 foreach ($recips as $recip) {
3669 logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
3670 self::build_and_transmit($profile, $recip, "profile", $message, false, "", true);
3675 * @brief Stores the signature for likes that are created on our system
3677 * @param array $contact The contact array of the "like"
3678 * @param int $post_id The post id of the "like"
3680 * @return bool Success
3682 public static function store_like_signature($contact, $post_id) {
3684 // Is the contact the owner? Then fetch the private key
3685 if (!$contact['self'] || ($contact['uid'] == 0)) {
3686 logger("No owner post, so not storing signature", LOGGER_DEBUG);
3690 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
3691 if (!dbm::is_result($r)) {
3695 $contact["uprvkey"] = $r[0]['prvkey'];
3697 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
3698 if (!dbm::is_result($r)) {
3702 if (!in_array($r[0]["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE))) {
3706 $message = self::construct_like($r[0], $contact);
3707 $message["author_signature"] = self::signature($contact, $message);
3710 * Now store the signature more flexible to dynamically support new fields.
3711 * This will break Diaspora compatibility with Friendica versions prior to 3.5.
3713 dba::insert('sign', array('iid' => $post_id, 'signed_text' => json_encode($message)));
3715 logger('Stored diaspora like signature');
3720 * @brief Stores the signature for comments that are created on our system
3722 * @param array $item The item array of the comment
3723 * @param array $contact The contact array of the item owner
3724 * @param string $uprvkey The private key of the sender
3725 * @param int $message_id The message id of the comment
3727 * @return bool Success
3729 public static function store_comment_signature($item, $contact, $uprvkey, $message_id) {
3731 if ($uprvkey == "") {
3732 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
3736 $contact["uprvkey"] = $uprvkey;
3738 $message = self::construct_comment($item, $contact);
3739 $message["author_signature"] = self::signature($contact, $message);
3742 * Now store the signature more flexible to dynamically support new fields.
3743 * This will break Diaspora compatibility with Friendica versions prior to 3.5.
3745 dba::insert('sign', array('iid' => $message_id, 'signed_text' => json_encode($message)));
3747 logger('Stored diaspora comment signature');