3 * @file include/diaspora.php
4 * @brief The implementation of the diaspora protocol
7 require_once("include/items.php");
8 require_once("include/bb2diaspora.php");
9 require_once("include/Scrape.php");
10 require_once("include/Contact.php");
11 require_once("include/Photo.php");
12 require_once("include/socgraph.php");
13 require_once("include/group.php");
14 require_once("include/xml.php");
15 require_once("include/datetime.php");
16 require_once("include/queue_fn.php");
19 * @brief This class contain functions to create and send Diaspora XML files
25 * @brief Return a list of relay servers
27 * This is an experimental Diaspora feature.
29 * @return array of relay servers
31 public static function relay_list() {
33 $serverdata = get_config("system", "relay_server");
34 if ($serverdata == "")
39 $servers = explode(",", $serverdata);
41 foreach($servers AS $server) {
42 $server = trim($server);
43 $batch = $server."/receive/public";
45 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
48 $addr = "relay@".str_replace("http://", "", normalise_link($server));
50 $r = q("INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
51 VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
56 dbesc(normalise_link($server)),
58 dbesc(NETWORK_DIASPORA),
59 intval(CONTACT_IS_FOLLOWER),
60 dbesc(datetime_convert()),
61 dbesc(datetime_convert()),
62 dbesc(datetime_convert())
65 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
67 $relay[] = $relais[0];
69 $relay[] = $relais[0];
76 * @brief repairs a signature that was double encoded
78 * The function is unused at the moment. It was copied from the old implementation.
80 * @param string $signature The signature
81 * @param string $handle The handle of the signature owner
82 * @param integer $level This value is only set inside this function to avoid endless loops
84 * @return string the repaired signature
86 private function repair_signature($signature, $handle = "", $level = 1) {
91 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
92 $signature = base64_decode($signature);
93 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
95 // Do a recursive call to be able to fix even multiple levels
97 $signature = self::repair_signature($signature, $handle, ++$level);
104 * @brief: Decodes incoming Diaspora message
106 * @param array $importer Array of the importer user
107 * @param string $xml urldecoded Diaspora salmon
110 * 'message' -> decoded Diaspora XML message
111 * 'author' -> author diaspora handle
112 * 'key' -> author public key (converted to pkcs#8)
114 public static function decode($importer, $xml) {
117 $basedom = parse_xml_string($xml);
119 if (!is_object($basedom))
122 $children = $basedom->children('https://joindiaspora.com/protocol');
124 if($children->header) {
126 $author_link = str_replace('acct:','',$children->header->author_id);
129 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
131 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
132 $ciphertext = base64_decode($encrypted_header->ciphertext);
134 $outer_key_bundle = '';
135 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
137 $j_outer_key_bundle = json_decode($outer_key_bundle);
139 $outer_iv = base64_decode($j_outer_key_bundle->iv);
140 $outer_key = base64_decode($j_outer_key_bundle->key);
142 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
145 $decrypted = pkcs5_unpad($decrypted);
147 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
148 $idom = parse_xml_string($decrypted,false);
150 $inner_iv = base64_decode($idom->iv);
151 $inner_aes_key = base64_decode($idom->aes_key);
153 $author_link = str_replace('acct:','',$idom->author_id);
156 $dom = $basedom->children(NAMESPACE_SALMON_ME);
158 // figure out where in the DOM tree our data is hiding
160 if($dom->provenance->data)
161 $base = $dom->provenance;
162 elseif($dom->env->data)
168 logger('unable to locate salmon data in xml');
169 http_status_exit(400);
173 // Stash the signature away for now. We have to find their key or it won't be good for anything.
174 $signature = base64url_decode($base->sig);
178 // strip whitespace so our data element will return to one big base64 blob
179 $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
182 // stash away some other stuff for later
184 $type = $base->data[0]->attributes()->type[0];
185 $keyhash = $base->sig[0]->attributes()->keyhash[0];
186 $encoding = $base->encoding;
190 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
194 $data = base64url_decode($data);
198 $inner_decrypted = $data;
201 // Decode the encrypted blob
203 $inner_encrypted = base64_decode($data);
204 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
205 $inner_decrypted = pkcs5_unpad($inner_decrypted);
209 logger('Could not retrieve author URI.');
210 http_status_exit(400);
212 // Once we have the author URI, go to the web and try to find their public key
213 // (first this will look it up locally if it is in the fcontact cache)
214 // This will also convert diaspora public key from pkcs#1 to pkcs#8
216 logger('Fetching key for '.$author_link);
217 $key = self::key($author_link);
220 logger('Could not retrieve author key.');
221 http_status_exit(400);
224 $verify = rsa_verify($signed_data,$signature,$key);
227 logger('Message did not verify. Discarding.');
228 http_status_exit(400);
231 logger('Message verified.');
233 return array('message' => (string)$inner_decrypted,
234 'author' => unxmlify($author_link),
235 'key' => (string)$key);
241 * @brief Dispatches public messages and find the fitting receivers
243 * @param array $msg The post that will be dispatched
245 * @return int The message id of the generated message, "true" or "false" if there was an error
247 public static function dispatch_public($msg) {
249 $enabled = intval(get_config("system", "diaspora_enabled"));
251 logger("diaspora is disabled");
255 // Use a dummy importer to import the data for the public copy
256 $importer = array("uid" => 0, "page-flags" => PAGE_FREELOVE);
257 $message_id = self::dispatch($importer,$msg);
259 // Now distribute it to the followers
260 $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
261 (SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
262 AND NOT `account_expired` AND NOT `account_removed`",
263 dbesc(NETWORK_DIASPORA),
264 dbesc($msg["author"])
268 logger("delivering to: ".$rr["username"]);
269 self::dispatch($rr,$msg);
272 logger("No subscribers for ".$msg["author"]." ".print_r($msg, true));
278 * @brief Dispatches the different message types to the different functions
280 * @param array $importer Array of the importer user
281 * @param array $msg The post that will be dispatched
283 * @return int The message id of the generated message, "true" or "false" if there was an error
285 public static function dispatch($importer, $msg) {
287 // The sender is the handle of the contact that sent the message.
288 // This will often be different with relayed messages (for example "like" and "comment")
289 $sender = $msg["author"];
291 if (!diaspora::valid_posting($msg, $fields)) {
292 logger("Invalid posting");
296 $type = $fields->getName();
298 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
301 case "account_deletion":
302 return self::receive_account_deletion($importer, $fields);
305 return self::receive_comment($importer, $sender, $fields, $msg["message"]);
308 return self::receive_contact_request($importer, $fields);
311 return self::receive_conversation($importer, $msg, $fields);
314 return self::receive_like($importer, $sender, $fields);
317 return self::receive_message($importer, $fields);
319 case "participation": // Not implemented
320 return self::receive_participation($importer, $fields);
322 case "photo": // Not implemented
323 return self::receive_photo($importer, $fields);
325 case "poll_participation": // Not implemented
326 return self::receive_poll_participation($importer, $fields);
329 return self::receive_profile($importer, $fields);
332 return self::receive_reshare($importer, $fields, $msg["message"]);
335 return self::receive_retraction($importer, $sender, $fields);
337 case "status_message":
338 return self::receive_status_message($importer, $fields, $msg["message"]);
341 logger("Unknown message type ".$type);
349 * @brief Checks if a posting is valid and fetches the data fields.
351 * This function does not only check the signature.
352 * It also does the conversion between the old and the new diaspora format.
354 * @param array $msg Array with the XML, the sender handle and the sender signature
355 * @param object $fields SimpleXML object that contains the posting when it is valid
357 * @return bool Is the posting valid?
359 private function valid_posting($msg, &$fields) {
361 $data = parse_xml_string($msg["message"], false);
363 if (!is_object($data)) {
364 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
368 $first_child = $data->getName();
370 // Is this the new or the old version?
371 if ($data->getName() == "XML") {
373 foreach ($data->post->children() as $child)
380 $type = $element->getName();
383 // All retractions are handled identically from now on.
384 // In the new version there will only be "retraction".
385 if (in_array($type, array("signed_retraction", "relayable_retraction")))
386 $type = "retraction";
388 if ($type == "request")
391 $fields = new SimpleXMLElement("<".$type."/>");
395 foreach ($element->children() AS $fieldname => $entry) {
397 // Translation for the old XML structure
398 if ($fieldname == "diaspora_handle")
399 $fieldname = "author";
401 if ($fieldname == "participant_handles")
402 $fieldname = "participants";
404 if (in_array($type, array("like", "participation"))) {
405 if ($fieldname == "target_type")
406 $fieldname = "parent_type";
409 if ($fieldname == "sender_handle")
410 $fieldname = "author";
412 if ($fieldname == "recipient_handle")
413 $fieldname = "recipient";
415 if ($fieldname == "root_diaspora_id")
416 $fieldname = "root_author";
418 if ($type == "retraction") {
419 if ($fieldname == "post_guid")
420 $fieldname = "target_guid";
422 if ($fieldname == "type")
423 $fieldname = "target_type";
427 if (($fieldname == "author_signature") AND ($entry != ""))
428 $author_signature = base64_decode($entry);
429 elseif (($fieldname == "parent_author_signature") AND ($entry != ""))
430 $parent_author_signature = base64_decode($entry);
431 elseif ($fieldname != "target_author_signature") {
432 if ($signed_data != "") {
434 $signed_data_parent .= ";";
437 $signed_data .= $entry;
439 if (!in_array($fieldname, array("parent_author_signature", "target_author_signature")) OR
440 ($orig_type == "relayable_retraction"))
441 xml::copy($entry, $fields, $fieldname);
444 // This is something that shouldn't happen at all.
445 if (in_array($type, array("status_message", "reshare", "profile")))
446 if ($msg["author"] != $fields->author) {
447 logger("Message handle is not the same as envelope sender. Quitting this message.");
451 // Only some message types have signatures. So we quit here for the other types.
452 if (!in_array($type, array("comment", "message", "like")))
455 // No author_signature? This is a must, so we quit.
456 if (!isset($author_signature)) {
457 logger("No author signature for type ".$type, LOGGER_DEBUG);
461 if (isset($parent_author_signature)) {
462 $key = self::key($msg["author"]);
464 if (!rsa_verify($signed_data, $parent_author_signature, $key, "sha256")) {
465 logger("No valid parent author signature for author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
470 $key = self::key($fields->author);
472 if (!rsa_verify($signed_data, $author_signature, $key, "sha256")) {
473 logger("No valid author signature for author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
480 * @brief Fetches the public key for a given handle
482 * @param string $handle The handle
484 * @return string The public key
486 private function key($handle) {
487 $handle = strval($handle);
489 logger("Fetching diaspora key for: ".$handle);
491 $r = self::person_by_handle($handle);
499 * @brief Fetches data for a given handle
501 * @param string $handle The handle
503 * @return array the queried data
505 private function person_by_handle($handle) {
507 $r = q("SELECT * FROM `fcontact` WHERE `network` = '%s' AND `addr` = '%s' LIMIT 1",
508 dbesc(NETWORK_DIASPORA),
513 logger("In cache ".print_r($r,true), LOGGER_DEBUG);
515 // update record occasionally so it doesn't get stale
516 $d = strtotime($person["updated"]." +00:00");
517 if ($d < strtotime("now - 14 days"))
521 if (!$person OR $update) {
522 logger("create or refresh", LOGGER_DEBUG);
523 $r = probe_url($handle, PROBE_DIASPORA);
525 // Note that Friendica contacts will return a "Diaspora person"
526 // if Diaspora connectivity is enabled on their server
527 if ($r AND ($r["network"] === NETWORK_DIASPORA)) {
528 self::add_fcontact($r, $update);
536 * @brief Updates the fcontact table
538 * @param array $arr The fcontact data
539 * @param bool $update Update or insert?
541 * @return string The id of the fcontact entry
543 private function add_fcontact($arr, $update = false) {
546 $r = q("UPDATE `fcontact` SET
559 WHERE `url` = '%s' AND `network` = '%s'",
561 dbesc($arr["photo"]),
562 dbesc($arr["request"]),
565 dbesc($arr["batch"]),
566 dbesc($arr["notify"]),
568 dbesc($arr["confirm"]),
569 dbesc($arr["alias"]),
570 dbesc($arr["pubkey"]),
571 dbesc(datetime_convert()),
573 dbesc($arr["network"])
576 $r = q("INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`,
577 `batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
578 VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
581 dbesc($arr["photo"]),
582 dbesc($arr["request"]),
585 dbesc($arr["batch"]),
586 dbesc($arr["notify"]),
588 dbesc($arr["confirm"]),
589 dbesc($arr["network"]),
590 dbesc($arr["alias"]),
591 dbesc($arr["pubkey"]),
592 dbesc(datetime_convert())
600 * @brief get a handle (user@domain.tld) from a given contact id or gcontact id
602 * @param int $contact_id The id in the contact table
603 * @param int $gcontact_id The id in the gcontact table
605 * @return string the handle
607 public static function handle_from_contact($contact_id, $gcontact_id = 0) {
610 logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
612 if ($gcontact_id != 0) {
613 $r = q("SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
614 intval($gcontact_id));
616 return $r[0]["addr"];
619 $r = q("SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
620 intval($contact_id));
624 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
626 if($contact['addr'] != "")
627 $handle = $contact['addr'];
629 $baseurl_start = strpos($contact['url'],'://') + 3;
630 $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
631 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
632 $handle = $contact['nick'].'@'.$baseurl;
640 * @brief Get a contact id for a given handle
642 * @param int $uid The user id
643 * @param string $handle The handle in the format user@domain.tld
645 * @return The contact id
647 private function contact_by_handle($uid, $handle) {
648 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
656 $handle_parts = explode("@", $handle);
657 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
658 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
670 * @brief Check if posting is allowed for this contact
672 * @param array $importer Array of the importer user
673 * @param array $contact The contact that is checked
674 * @param bool $is_comment Is the check for a comment?
676 * @return bool is the contact allowed to post?
678 private function post_allow($importer, $contact, $is_comment = false) {
680 // perhaps we were already sharing with this person. Now they're sharing with us.
681 // That makes us friends.
682 // Normally this should have handled by getting a request - but this could get lost
683 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
684 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
685 intval(CONTACT_IS_FRIEND),
686 intval($contact["id"]),
687 intval($importer["uid"])
689 $contact["rel"] = CONTACT_IS_FRIEND;
690 logger("defining user ".$contact["nick"]." as friend");
693 if(($contact["blocked"]) || ($contact["readonly"]) || ($contact["archive"]))
695 if($contact["rel"] == CONTACT_IS_SHARING || $contact["rel"] == CONTACT_IS_FRIEND)
697 if($contact["rel"] == CONTACT_IS_FOLLOWER)
698 if(($importer["page-flags"] == PAGE_COMMUNITY) OR $is_comment)
701 // Messages for the global users are always accepted
702 if ($importer["uid"] == 0)
709 * @brief Fetches the contact id for a handle and checks if posting is allowed
711 * @param array $importer Array of the importer user
712 * @param string $handle The checked handle in the format user@domain.tld
713 * @param bool $is_comment Is the check for a comment?
715 * @return array The contact data
717 private function allowed_contact_by_handle($importer, $handle, $is_comment = false) {
718 $contact = self::contact_by_handle($importer["uid"], $handle);
720 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
724 if (!self::post_allow($importer, $contact, $is_comment)) {
725 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
732 * @brief Does the message already exists on the system?
734 * @param int $uid The user id
735 * @param string $guid The guid of the message
737 * @return int|bool message id if the message already was stored into the system - or false.
739 private function message_exists($uid, $guid) {
740 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
746 logger("message ".$guid." already exists for user ".$uid);
754 * @brief Checks for links to posts in a message
756 * @param array $item The item array
758 private function fetch_guid($item) {
759 preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
760 function ($match) use ($item){
761 return(self::fetch_guid_sub($match, $item));
766 * @brief sub function of "fetch_guid" which checks for links in messages
768 * @param array $match array containing a link that has to be checked for a message link
769 * @param array $item The item array
771 private function fetch_guid_sub($match, $item) {
772 if (!self::store_by_guid($match[1], $item["author-link"]))
773 self::store_by_guid($match[1], $item["owner-link"]);
777 * @brief Fetches an item with a given guid from a given server
779 * @param string $guid the message guid
780 * @param string $server The server address
781 * @param int $uid The user id of the user
783 * @return int the message id of the stored message or false
785 private function store_by_guid($guid, $server, $uid = 0) {
786 $serverparts = parse_url($server);
787 $server = $serverparts["scheme"]."://".$serverparts["host"];
789 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
791 $msg = self::message($guid, $server);
796 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
798 // Now call the dispatcher
799 return self::dispatch_public($msg);
803 * @brief Fetches a message from a server
805 * @param string $guid message guid
806 * @param string $server The url of the server
807 * @param int $level Endless loop prevention
810 * 'message' => The message XML
811 * 'author' => The author handle
812 * 'key' => The public key of the author
814 private function message($guid, $server, $level = 0) {
819 // This will work for Diaspora and newer Friendica servers
820 $source_url = $server."/p/".$guid.".xml";
821 $x = fetch_url($source_url);
825 $source_xml = parse_xml_string($x, false);
827 if (!is_object($source_xml))
830 if ($source_xml->post->reshare) {
831 // Reshare of a reshare - old Diaspora version
832 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
833 } elseif ($source_xml->getName() == "reshare") {
834 // Reshare of a reshare - new Diaspora version
835 return self::message($source_xml->root_guid, $server, ++$level);
840 // Fetch the author - for the old and the new Diaspora version
841 if ($source_xml->post->status_message->diaspora_handle)
842 $author = (string)$source_xml->post->status_message->diaspora_handle;
843 elseif ($source_xml->author AND ($source_xml->getName() == "status_message"))
844 $author = (string)$source_xml->author;
846 // If this isn't a "status_message" then quit
850 $msg = array("message" => $x, "author" => $author);
852 $msg["key"] = self::key($msg["author"]);
858 * @brief Fetches the item record of a given guid
860 * @param int $uid The user id
861 * @param string $guid message guid
862 * @param string $author The handle of the item
863 * @param array $contact The contact of the item owner
865 * @return array the item record
867 private function parent_item($uid, $guid, $author, $contact) {
868 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
869 `author-name`, `author-link`, `author-avatar`,
870 `owner-name`, `owner-link`, `owner-avatar`
871 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
872 intval($uid), dbesc($guid));
875 $result = self::store_by_guid($guid, $contact["url"], $uid);
878 $person = self::person_by_handle($author);
879 $result = self::store_by_guid($guid, $person["url"], $uid);
883 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
885 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
886 `author-name`, `author-link`, `author-avatar`,
887 `owner-name`, `owner-link`, `owner-avatar`
888 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
889 intval($uid), dbesc($guid));
894 logger("parent item not found: parent: ".$guid." - user: ".$uid);
897 logger("parent item found: parent: ".$guid." - user: ".$uid);
903 * @brief returns contact details
905 * @param array $contact The default contact if the person isn't found
906 * @param array $person The record of the person
907 * @param int $uid The user id
910 * 'cid' => contact id
911 * 'network' => network type
913 private function author_contact_by_url($contact, $person, $uid) {
915 $r = q("SELECT `id`, `network` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
916 dbesc(normalise_link($person["url"])), intval($uid));
919 $network = $r[0]["network"];
921 $cid = $contact["id"];
922 $network = NETWORK_DIASPORA;
925 return (array("cid" => $cid, "network" => $network));
929 * @brief Is the profile a hubzilla profile?
931 * @param string $url The profile link
933 * @return bool is it a hubzilla server?
935 public static function is_redmatrix($url) {
936 return(strstr($url, "/channel/"));
940 * @brief Generate a post link with a given handle and message guid
942 * @param string $addr The user handle
943 * @param string $guid message guid
945 * @return string the post link
947 private function plink($addr, $guid) {
948 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
952 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
954 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
955 // So we try another way as well.
956 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
958 $r[0]["network"] = $s[0]["network"];
960 if ($r[0]["network"] == NETWORK_DFRN)
961 return(str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/"));
963 if (self::is_redmatrix($r[0]["url"]))
964 return $r[0]["url"]."/?f=&mid=".$guid;
966 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
970 * @brief Processes an account deletion
972 * @param array $importer Array of the importer user
973 * @param object $data The message object
975 * @return bool Success
977 private function receive_account_deletion($importer, $data) {
979 /// @todo Account deletion should remove the contact from the global contacts as well
981 $author = notags(unxmlify($data->author));
983 $contact = self::contact_by_handle($importer["uid"], $author);
985 logger("cannot find contact for author: ".$author);
989 // We now remove the contact
990 contact_remove($contact["id"]);
995 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
997 * @param string $author Author handle
998 * @param string $guid Message guid
1000 * @return string The constructed uri or the one from our database
1002 private function get_uri_from_guid($author, $guid) {
1004 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1006 return $r[0]["uri"];
1008 return $author.":".$guid;
1012 * @brief Processes an incoming comment
1014 * @param array $importer Array of the importer user
1015 * @param string $sender The sender of the message
1016 * @param object $data The message object
1017 * @param string $xml The original XML of the message
1019 * @return int The message id of the generated comment or "false" if there was an error
1021 private function receive_comment($importer, $sender, $data, $xml) {
1022 $guid = notags(unxmlify($data->guid));
1023 $parent_guid = notags(unxmlify($data->parent_guid));
1024 $text = unxmlify($data->text);
1025 $author = notags(unxmlify($data->author));
1027 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1031 $message_id = self::message_exists($importer["uid"], $guid);
1035 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1039 $person = self::person_by_handle($author);
1040 if (!is_array($person)) {
1041 logger("unable to find author details");
1045 // Fetch the contact id - if we know this contact
1046 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1048 $datarray = array();
1050 $datarray["uid"] = $importer["uid"];
1051 $datarray["contact-id"] = $author_contact["cid"];
1052 $datarray["network"] = $author_contact["network"];
1054 $datarray["author-name"] = $person["name"];
1055 $datarray["author-link"] = $person["url"];
1056 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1058 $datarray["owner-name"] = $contact["name"];
1059 $datarray["owner-link"] = $contact["url"];
1060 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1062 $datarray["guid"] = $guid;
1063 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1065 $datarray["type"] = "remote-comment";
1066 $datarray["verb"] = ACTIVITY_POST;
1067 $datarray["gravity"] = GRAVITY_COMMENT;
1068 $datarray["parent-uri"] = $parent_item["uri"];
1070 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1071 $datarray["object"] = $xml;
1073 $datarray["body"] = diaspora2bb($text);
1075 self::fetch_guid($datarray);
1077 $message_id = item_store($datarray);
1080 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1082 // If we are the origin of the parent we store the original data and notify our followers
1083 if($message_id AND $parent_item["origin"]) {
1085 // Formerly we stored the signed text, the signature and the author in different fields.
1086 // We now store the raw data so that we are more flexible.
1087 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1088 intval($message_id),
1089 dbesc(json_encode($data))
1093 proc_run("php", "include/notifier.php", "comment-import", $message_id);
1100 * @brief processes and stores private messages
1102 * @param array $importer Array of the importer user
1103 * @param array $contact The contact of the message
1104 * @param object $data The message object
1105 * @param array $msg Array of the processed message, author handle and key
1106 * @param object $mesg The private message
1107 * @param array $conversation The conversation record to which this message belongs
1109 * @return bool "true" if it was successful
1111 private function receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation) {
1112 $guid = notags(unxmlify($data->guid));
1113 $subject = notags(unxmlify($data->subject));
1114 $author = notags(unxmlify($data->author));
1118 $msg_guid = notags(unxmlify($mesg->guid));
1119 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1120 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1121 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1122 $msg_text = unxmlify($mesg->text);
1123 $msg_created_at = datetime_convert("UTC", "UTC", notags(unxmlify($mesg->created_at)));
1125 // "diaspora_handle" is the element name from the old version
1126 // "author" is the element name from the new version
1128 $msg_author = notags(unxmlify($mesg->author));
1129 elseif ($mesg->diaspora_handle)
1130 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1134 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1136 if($msg_conversation_guid != $guid) {
1137 logger("message conversation guid does not belong to the current conversation.");
1141 $body = diaspora2bb($msg_text);
1142 $message_uri = $msg_author.":".$msg_guid;
1144 $author_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1146 $author_signature = base64_decode($msg_author_signature);
1148 if(strcasecmp($msg_author,$msg["author"]) == 0) {
1152 $person = self::person_by_handle($msg_author);
1154 if (is_array($person) && x($person, "pubkey"))
1155 $key = $person["pubkey"];
1157 logger("unable to find author details");
1162 if (!rsa_verify($author_signed_data, $author_signature, $key, "sha256")) {
1163 logger("verification failed.");
1167 if($msg_parent_author_signature) {
1168 $owner_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1170 $parent_author_signature = base64_decode($msg_parent_author_signature);
1174 if (!rsa_verify($owner_signed_data, $parent_author_signature, $key, "sha256")) {
1175 logger("owner verification failed.");
1180 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' LIMIT 1",
1184 logger("duplicate message already delivered.", LOGGER_DEBUG);
1188 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1189 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1190 intval($importer["uid"]),
1192 intval($conversation["id"]),
1193 dbesc($person["name"]),
1194 dbesc($person["photo"]),
1195 dbesc($person["url"]),
1196 intval($contact["id"]),
1201 dbesc($message_uri),
1202 dbesc($author.":".$guid),
1203 dbesc($msg_created_at)
1206 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1207 dbesc(datetime_convert()),
1208 intval($conversation["id"])
1212 "type" => NOTIFY_MAIL,
1213 "notify_flags" => $importer["notify-flags"],
1214 "language" => $importer["language"],
1215 "to_name" => $importer["username"],
1216 "to_email" => $importer["email"],
1217 "uid" =>$importer["uid"],
1218 "item" => array("subject" => $subject, "body" => $body),
1219 "source_name" => $person["name"],
1220 "source_link" => $person["url"],
1221 "source_photo" => $person["thumb"],
1222 "verb" => ACTIVITY_POST,
1229 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1231 * @param array $importer Array of the importer user
1232 * @param array $msg Array of the processed message, author handle and key
1233 * @param object $data The message object
1235 * @return bool Success
1237 private function receive_conversation($importer, $msg, $data) {
1238 $guid = notags(unxmlify($data->guid));
1239 $subject = notags(unxmlify($data->subject));
1240 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1241 $author = notags(unxmlify($data->author));
1242 $participants = notags(unxmlify($data->participants));
1244 $messages = $data->message;
1246 if (!count($messages)) {
1247 logger("empty conversation");
1251 $contact = self::allowed_contact_by_handle($importer, $msg["author"], true);
1255 $conversation = null;
1257 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1258 intval($importer["uid"]),
1262 $conversation = $c[0];
1264 $r = q("INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1265 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1266 intval($importer["uid"]),
1269 dbesc(datetime_convert("UTC", "UTC", $created_at)),
1270 dbesc(datetime_convert()),
1272 dbesc($participants)
1275 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1276 intval($importer["uid"]),
1281 $conversation = $c[0];
1283 if (!$conversation) {
1284 logger("unable to create conversation.");
1288 foreach($messages as $mesg)
1289 self::receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation);
1295 * @brief Creates the body for a "like" message
1297 * @param array $contact The contact that send us the "like"
1298 * @param array $parent_item The item array of the parent item
1299 * @param string $guid message guid
1301 * @return string the body
1303 private function construct_like_body($contact, $parent_item, $guid) {
1304 $bodyverb = t('%1$s likes %2$s\'s %3$s');
1306 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1307 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1308 $plink = "[url=".App::get_baseurl()."/display/".urlencode($guid)."]".t("status")."[/url]";
1310 return sprintf($bodyverb, $ulink, $alink, $plink);
1314 * @brief Creates a XML object for a "like"
1316 * @param array $importer Array of the importer user
1317 * @param array $parent_item The item array of the parent item
1319 * @return string The XML
1321 private function construct_like_object($importer, $parent_item) {
1322 $objtype = ACTIVITY_OBJ_NOTE;
1323 $link = '<link rel="alternate" type="text/html" href="'.App::get_baseurl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1324 $parent_body = $parent_item["body"];
1326 $xmldata = array("object" => array("type" => $objtype,
1328 "id" => $parent_item["uri"],
1331 "content" => $parent_body));
1333 return xml::from_array($xmldata, $xml, true);
1337 * @brief Processes "like" messages
1339 * @param array $importer Array of the importer user
1340 * @param string $sender The sender of the message
1341 * @param object $data The message object
1343 * @return int The message id of the generated like or "false" if there was an error
1345 private function receive_like($importer, $sender, $data) {
1346 $positive = notags(unxmlify($data->positive));
1347 $guid = notags(unxmlify($data->guid));
1348 $parent_type = notags(unxmlify($data->parent_type));
1349 $parent_guid = notags(unxmlify($data->parent_guid));
1350 $author = notags(unxmlify($data->author));
1352 // likes on comments aren't supported by Diaspora - only on posts
1353 // But maybe this will be supported in the future, so we will accept it.
1354 if (!in_array($parent_type, array("Post", "Comment")))
1357 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1361 $message_id = self::message_exists($importer["uid"], $guid);
1365 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1369 $person = self::person_by_handle($author);
1370 if (!is_array($person)) {
1371 logger("unable to find author details");
1375 // Fetch the contact id - if we know this contact
1376 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1378 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
1379 // We would accept this anyhow.
1380 if ($positive == "true")
1381 $verb = ACTIVITY_LIKE;
1383 $verb = ACTIVITY_DISLIKE;
1385 $datarray = array();
1387 $datarray["uid"] = $importer["uid"];
1388 $datarray["contact-id"] = $author_contact["cid"];
1389 $datarray["network"] = $author_contact["network"];
1391 $datarray["author-name"] = $person["name"];
1392 $datarray["author-link"] = $person["url"];
1393 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1395 $datarray["owner-name"] = $contact["name"];
1396 $datarray["owner-link"] = $contact["url"];
1397 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1399 $datarray["guid"] = $guid;
1400 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1402 $datarray["type"] = "activity";
1403 $datarray["verb"] = $verb;
1404 $datarray["gravity"] = GRAVITY_LIKE;
1405 $datarray["parent-uri"] = $parent_item["uri"];
1407 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
1408 $datarray["object"] = self::construct_like_object($importer, $parent_item);
1410 $datarray["body"] = self::construct_like_body($contact, $parent_item, $guid);
1412 $message_id = item_store($datarray);
1415 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1417 // If we are the origin of the parent we store the original data and notify our followers
1418 if($message_id AND $parent_item["origin"]) {
1420 // Formerly we stored the signed text, the signature and the author in different fields.
1421 // We now store the raw data so that we are more flexible.
1422 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1423 intval($message_id),
1424 dbesc(json_encode($data))
1428 proc_run("php", "include/notifier.php", "comment-import", $message_id);
1435 * @brief Processes private messages
1437 * @param array $importer Array of the importer user
1438 * @param object $data The message object
1440 * @return bool Success?
1442 private function receive_message($importer, $data) {
1443 $guid = notags(unxmlify($data->guid));
1444 $parent_guid = notags(unxmlify($data->parent_guid));
1445 $text = unxmlify($data->text);
1446 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1447 $author = notags(unxmlify($data->author));
1448 $conversation_guid = notags(unxmlify($data->conversation_guid));
1450 $contact = self::allowed_contact_by_handle($importer, $author, true);
1454 $conversation = null;
1456 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1457 intval($importer["uid"]),
1458 dbesc($conversation_guid)
1461 $conversation = $c[0];
1463 logger("conversation not available.");
1469 $body = diaspora2bb($text);
1470 $message_uri = $author.":".$guid;
1472 $person = self::person_by_handle($author);
1474 logger("unable to find author details");
1478 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1479 dbesc($message_uri),
1480 intval($importer["uid"])
1483 logger("duplicate message already delivered.", LOGGER_DEBUG);
1487 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1488 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1489 intval($importer["uid"]),
1491 intval($conversation["id"]),
1492 dbesc($person["name"]),
1493 dbesc($person["photo"]),
1494 dbesc($person["url"]),
1495 intval($contact["id"]),
1496 dbesc($conversation["subject"]),
1500 dbesc($message_uri),
1501 dbesc($author.":".$parent_guid),
1505 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1506 dbesc(datetime_convert()),
1507 intval($conversation["id"])
1514 * @brief Processes participations - unsupported by now
1516 * @param array $importer Array of the importer user
1517 * @param object $data The message object
1519 * @return bool always true
1521 private function receive_participation($importer, $data) {
1522 // I'm not sure if we can fully support this message type
1527 * @brief Processes photos - unneeded
1529 * @param array $importer Array of the importer user
1530 * @param object $data The message object
1532 * @return bool always true
1534 private function receive_photo($importer, $data) {
1535 // There doesn't seem to be a reason for this function, since the photo data is transmitted in the status message as well
1540 * @brief Processes poll participations - unssupported
1542 * @param array $importer Array of the importer user
1543 * @param object $data The message object
1545 * @return bool always true
1547 private function receive_poll_participation($importer, $data) {
1548 // We don't support polls by now
1553 * @brief Processes incoming profile updates
1555 * @param array $importer Array of the importer user
1556 * @param object $data The message object
1558 * @return bool Success
1560 private function receive_profile($importer, $data) {
1561 $author = notags(unxmlify($data->author));
1563 $contact = self::contact_by_handle($importer["uid"], $author);
1567 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
1568 $image_url = unxmlify($data->image_url);
1569 $birthday = unxmlify($data->birthday);
1570 $location = diaspora2bb(unxmlify($data->location));
1571 $about = diaspora2bb(unxmlify($data->bio));
1572 $gender = unxmlify($data->gender);
1573 $searchable = (unxmlify($data->searchable) == "true");
1574 $nsfw = (unxmlify($data->nsfw) == "true");
1575 $tags = unxmlify($data->tag_string);
1577 $tags = explode("#", $tags);
1579 $keywords = array();
1580 foreach ($tags as $tag) {
1581 $tag = trim(strtolower($tag));
1586 $keywords = implode(", ", $keywords);
1588 $handle_parts = explode("@", $author);
1589 $nick = $handle_parts[0];
1592 $name = $handle_parts[0];
1594 if( preg_match("|^https?://|", $image_url) === 0)
1595 $image_url = "http://".$handle_parts[1].$image_url;
1597 update_contact_avatar($image_url, $importer["uid"], $contact["id"]);
1599 // Generic birthday. We don't know the timezone. The year is irrelevant.
1601 $birthday = str_replace("1000", "1901", $birthday);
1603 if ($birthday != "")
1604 $birthday = datetime_convert("UTC", "UTC", $birthday, "Y-m-d");
1606 // this is to prevent multiple birthday notifications in a single year
1607 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
1609 if(substr($birthday,5) === substr($contact["bd"],5))
1610 $birthday = $contact["bd"];
1612 $r = q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
1613 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
1617 dbesc(datetime_convert()),
1623 intval($contact["id"]),
1624 intval($importer["uid"])
1628 poco_check($contact["url"], $name, NETWORK_DIASPORA, $image_url, $about, $location, $gender, $keywords, "",
1629 datetime_convert(), 2, $contact["id"], $importer["uid"]);
1632 $gcontact = array("url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
1633 "photo" => $image_url, "name" => $name, "location" => $location,
1634 "about" => $about, "birthday" => $birthday, "gender" => $gender,
1635 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
1636 "hide" => !$searchable, "nsfw" => $nsfw);
1638 update_gcontact($gcontact);
1640 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
1646 * @brief Processes incoming friend requests
1648 * @param array $importer Array of the importer user
1649 * @param array $contact The contact that send the request
1651 private function receive_request_make_friend($importer, $contact) {
1655 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1656 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1657 intval(CONTACT_IS_FRIEND),
1658 intval($contact["id"]),
1659 intval($importer["uid"])
1662 // send notification
1664 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
1665 intval($importer["uid"])
1668 if($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(get_pconfig($importer["uid"], "system", "post_newfriend"))) {
1670 $self = q("SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
1671 intval($importer["uid"])
1674 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
1676 if($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
1679 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
1680 $arr["uid"] = $importer["uid"];
1681 $arr["contact-id"] = $self[0]["id"];
1683 $arr["type"] = 'wall';
1684 $arr["gravity"] = 0;
1686 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
1687 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
1688 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
1689 $arr["verb"] = ACTIVITY_FRIEND;
1690 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
1692 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
1693 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1694 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
1695 $arr["body"] = sprintf(t("%1$s is now friends with %2$s"), $A, $B)."\n\n\n".$Bphoto;
1697 $arr["object"] = self::construct_new_friend_object($contact);
1699 $arr["last-child"] = 1;
1701 $arr["allow_cid"] = $user[0]["allow_cid"];
1702 $arr["allow_gid"] = $user[0]["allow_gid"];
1703 $arr["deny_cid"] = $user[0]["deny_cid"];
1704 $arr["deny_gid"] = $user[0]["deny_gid"];
1706 $i = item_store($arr);
1708 proc_run("php", "include/notifier.php", "activity", $i);
1714 * @brief Creates a XML object for a "new friend" message
1716 * @param array $contact Array of the contact
1718 * @return string The XML
1720 private function construct_new_friend_object($contact) {
1721 $objtype = ACTIVITY_OBJ_PERSON;
1722 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
1723 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
1725 $xmldata = array("object" => array("type" => $objtype,
1726 "title" => $contact["name"],
1727 "id" => $contact["url"]."/".$contact["name"],
1730 return xml::from_array($xmldata, $xml, true);
1734 * @brief Processes incoming sharing notification
1736 * @param array $importer Array of the importer user
1737 * @param object $data The message object
1739 * @return bool Success
1741 private function receive_contact_request($importer, $data) {
1742 $author = unxmlify($data->author);
1743 $recipient = unxmlify($data->recipient);
1745 if (!$author || !$recipient)
1748 // the current protocol version doesn't know these fields
1749 // That means that we will assume their existance
1750 if (isset($data->following))
1751 $following = (unxmlify($data->following) == "true");
1755 if (isset($data->sharing))
1756 $sharing = (unxmlify($data->sharing) == "true");
1760 $contact = self::contact_by_handle($importer["uid"],$author);
1762 // perhaps we were already sharing with this person. Now they're sharing with us.
1763 // That makes us friends.
1765 if ($following AND $sharing) {
1766 self::receive_request_make_friend($importer, $contact);
1768 } else /// @todo Handle all possible variations of adding and retracting of permissions
1772 if (!$following AND $sharing AND in_array($importer["page-flags"], array(PAGE_SOAPBOX, PAGE_NORMAL))) {
1773 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
1775 } elseif (!$following AND !$sharing) {
1776 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
1780 $ret = self::person_by_handle($author);
1782 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
1783 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
1787 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
1789 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
1790 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
1791 intval($importer["uid"]),
1792 dbesc($ret["network"]),
1793 dbesc($ret["addr"]),
1796 dbesc(normalise_link($ret["url"])),
1798 dbesc($ret["name"]),
1799 dbesc($ret["nick"]),
1800 dbesc($ret["photo"]),
1801 dbesc($ret["pubkey"]),
1802 dbesc($ret["notify"]),
1803 dbesc($ret["poll"]),
1808 // find the contact record we just created
1810 $contact_record = self::contact_by_handle($importer["uid"],$author);
1812 if (!$contact_record) {
1813 logger("unable to locate newly created contact record.");
1817 $def_gid = get_default_group($importer['uid'], $ret["network"]);
1819 if(intval($def_gid))
1820 group_add_member($importer["uid"], "", $contact_record["id"], $def_gid);
1822 update_contact_avatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
1824 if($importer["page-flags"] == PAGE_NORMAL) {
1826 $hash = random_string().(string)time(); // Generate a confirm_key
1828 $ret = q("INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
1829 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
1830 intval($importer["uid"]),
1831 intval($contact_record["id"]),
1834 dbesc(t("Sharing notification from Diaspora network")),
1836 dbesc(datetime_convert())
1840 // automatic friend approval
1842 update_contact_avatar($contact_record["photo"],$importer["uid"],$contact_record["id"]);
1844 // technically they are sharing with us (CONTACT_IS_SHARING),
1845 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
1846 // we are going to change the relationship and make them a follower.
1848 if (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing AND $following)
1849 $new_relation = CONTACT_IS_FRIEND;
1850 elseif (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing)
1851 $new_relation = CONTACT_IS_SHARING;
1853 $new_relation = CONTACT_IS_FOLLOWER;
1855 $r = q("UPDATE `contact` SET `rel` = %d,
1863 intval($new_relation),
1864 dbesc(datetime_convert()),
1865 dbesc(datetime_convert()),
1866 intval($contact_record["id"])
1869 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
1871 $ret = self::send_share($u[0], $contact_record);
1878 * @brief Fetches a message with a given guid
1880 * @param string $guid message guid
1881 * @param string $orig_author handle of the original post
1882 * @param string $author handle of the sharer
1884 * @return array The fetched item
1886 private function original_item($guid, $orig_author, $author) {
1888 // Do we already have this item?
1889 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
1890 `author-name`, `author-link`, `author-avatar`
1891 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1895 logger("reshared message ".$guid." already exists on system.");
1897 // Maybe it is already a reshared item?
1898 // Then refetch the content, if it is a reshare from a reshare.
1899 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
1900 if (self::is_reshare($r[0]["body"], true))
1902 elseif (self::is_reshare($r[0]["body"], false)) {
1903 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
1905 // Add OEmbed and other information to the body
1906 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
1914 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
1915 logger("1st try: reshared message ".$guid." will be fetched from original server: ".$server);
1916 $item_id = self::store_by_guid($guid, $server);
1919 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
1920 logger("2nd try: reshared message ".$guid." will be fetched from original server: ".$server);
1921 $item_id = self::store_by_guid($guid, $server);
1924 // Deactivated by now since there is a risk that someone could manipulate postings through this method
1926 $server = "https://".substr($author, strpos($author, "@") + 1);
1927 logger("3rd try: reshared message ".$guid." will be fetched from sharer's server: ".$server);
1928 $item_id = self::store_by_guid($guid, $server);
1931 $server = "http://".substr($author, strpos($author, "@") + 1);
1932 logger("4th try: reshared message ".$guid." will be fetched from sharer's server: ".$server);
1933 $item_id = self::store_by_guid($guid, $server);
1937 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
1938 `author-name`, `author-link`, `author-avatar`
1939 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1943 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
1944 if (self::is_reshare($r[0]["body"], false))
1945 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
1956 * @brief Processes a reshare message
1958 * @param array $importer Array of the importer user
1959 * @param object $data The message object
1960 * @param string $xml The original XML of the message
1962 * @return int the message id
1964 private function receive_reshare($importer, $data, $xml) {
1965 $root_author = notags(unxmlify($data->root_author));
1966 $root_guid = notags(unxmlify($data->root_guid));
1967 $guid = notags(unxmlify($data->guid));
1968 $author = notags(unxmlify($data->author));
1969 $public = notags(unxmlify($data->public));
1970 $created_at = notags(unxmlify($data->created_at));
1972 $contact = self::allowed_contact_by_handle($importer, $author, false);
1976 $message_id = self::message_exists($importer["uid"], $guid);
1980 $original_item = self::original_item($root_guid, $root_author, $author);
1981 if (!$original_item)
1984 $orig_url = App::get_baseurl()."/display/".$original_item["guid"];
1986 $datarray = array();
1988 $datarray["uid"] = $importer["uid"];
1989 $datarray["contact-id"] = $contact["id"];
1990 $datarray["network"] = NETWORK_DIASPORA;
1992 $datarray["author-name"] = $contact["name"];
1993 $datarray["author-link"] = $contact["url"];
1994 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1996 $datarray["owner-name"] = $datarray["author-name"];
1997 $datarray["owner-link"] = $datarray["author-link"];
1998 $datarray["owner-avatar"] = $datarray["author-avatar"];
2000 $datarray["guid"] = $guid;
2001 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2003 $datarray["verb"] = ACTIVITY_POST;
2004 $datarray["gravity"] = GRAVITY_PARENT;
2006 $datarray["object"] = $xml;
2008 $prefix = share_header($original_item["author-name"], $original_item["author-link"], $original_item["author-avatar"],
2009 $original_item["guid"], $original_item["created"], $orig_url);
2010 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2012 $datarray["tag"] = $original_item["tag"];
2013 $datarray["app"] = $original_item["app"];
2015 $datarray["plink"] = self::plink($author, $guid);
2016 $datarray["private"] = (($public == "false") ? 1 : 0);
2017 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = datetime_convert("UTC", "UTC", $created_at);
2019 $datarray["object-type"] = $original_item["object-type"];
2021 self::fetch_guid($datarray);
2022 $message_id = item_store($datarray);
2025 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2031 * @brief Processes retractions
2033 * @param array $importer Array of the importer user
2034 * @param array $contact The contact of the item owner
2035 * @param object $data The message object
2037 * @return bool success
2039 private function item_retraction($importer, $contact, $data) {
2040 $target_type = notags(unxmlify($data->target_type));
2041 $target_guid = notags(unxmlify($data->target_guid));
2042 $author = notags(unxmlify($data->author));
2044 $person = self::person_by_handle($author);
2045 if (!is_array($person)) {
2046 logger("unable to find author detail for ".$author);
2050 $r = q("SELECT `id`, `parent`, `parent-uri`, `author-link` FROM `item` WHERE `guid` = '%s' AND `uid` = %d AND NOT `file` LIKE '%%[%%' LIMIT 1",
2051 dbesc($target_guid),
2052 intval($importer["uid"])
2057 // Only delete it if the author really fits
2058 if (!link_compare($r[0]["author-link"], $person["url"])) {
2059 logger("Item author ".$r[0]["author-link"]." doesn't fit to expected contact ".$person["url"], LOGGER_DEBUG);
2063 // Check if the sender is the thread owner
2064 $p = q("SELECT `id`, `author-link`, `origin` FROM `item` WHERE `id` = %d",
2065 intval($r[0]["parent"]));
2067 // Only delete it if the parent author really fits
2068 if (!link_compare($p[0]["author-link"], $contact["url"]) AND !link_compare($r[0]["author-link"], $contact["url"])) {
2069 logger("Thread author ".$p[0]["author-link"]." and item author ".$r[0]["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2073 // 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
2074 q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' WHERE `id` = %d",
2075 dbesc(datetime_convert()),
2076 dbesc(datetime_convert()),
2079 delete_thread($r[0]["id"], $r[0]["parent-uri"]);
2081 logger("Deleted target ".$target_guid." (".$r[0]["id"].") from user ".$importer["uid"]." parent: ".$p[0]["id"], LOGGER_DEBUG);
2083 // Now check if the retraction needs to be relayed by us
2084 if($p[0]["origin"]) {
2086 proc_run("php", "include/notifier.php", "drop", $r[0]["id"]);
2093 * @brief Receives retraction messages
2095 * @param array $importer Array of the importer user
2096 * @param string $sender The sender of the message
2097 * @param object $data The message object
2099 * @return bool Success
2101 private function receive_retraction($importer, $sender, $data) {
2102 $target_type = notags(unxmlify($data->target_type));
2104 $contact = self::contact_by_handle($importer["uid"], $sender);
2106 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2110 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2112 switch ($target_type) {
2115 case "Post": // "Post" will be supported in a future version
2117 case "StatusMessage":
2118 return self::item_retraction($importer, $contact, $data);;
2122 /// @todo What should we do with an "unshare"?
2123 // Removing the contact isn't correct since we still can read the public items
2124 contact_remove($contact["id"]);
2128 logger("Unknown target type ".$target_type);
2135 * @brief Receives status messages
2137 * @param array $importer Array of the importer user
2138 * @param object $data The message object
2139 * @param string $xml The original XML of the message
2141 * @return int The message id of the newly created item
2143 private function receive_status_message($importer, $data, $xml) {
2145 $raw_message = unxmlify($data->raw_message);
2146 $guid = notags(unxmlify($data->guid));
2147 $author = notags(unxmlify($data->author));
2148 $public = notags(unxmlify($data->public));
2149 $created_at = notags(unxmlify($data->created_at));
2150 $provider_display_name = notags(unxmlify($data->provider_display_name));
2152 /// @todo enable support for polls
2153 //if ($data->poll) {
2154 // foreach ($data->poll AS $poll)
2158 $contact = self::allowed_contact_by_handle($importer, $author, false);
2162 $message_id = self::message_exists($importer["uid"], $guid);
2167 if ($data->location)
2168 foreach ($data->location->children() AS $fieldname => $data)
2169 $address[$fieldname] = notags(unxmlify($data));
2171 $body = diaspora2bb($raw_message);
2173 $datarray = array();
2175 // Attach embedded pictures to the body
2177 foreach ($data->photo AS $photo)
2178 $body = "[img]".unxmlify($photo->remote_photo_path).
2179 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2181 $datarray["object-type"] = ACTIVITY_OBJ_PHOTO;
2183 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2185 // Add OEmbed and other information to the body
2186 if (!self::is_redmatrix($contact["url"]))
2187 $body = add_page_info_to_body($body, false, true);
2190 $datarray["uid"] = $importer["uid"];
2191 $datarray["contact-id"] = $contact["id"];
2192 $datarray["network"] = NETWORK_DIASPORA;
2194 $datarray["author-name"] = $contact["name"];
2195 $datarray["author-link"] = $contact["url"];
2196 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2198 $datarray["owner-name"] = $datarray["author-name"];
2199 $datarray["owner-link"] = $datarray["author-link"];
2200 $datarray["owner-avatar"] = $datarray["author-avatar"];
2202 $datarray["guid"] = $guid;
2203 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2205 $datarray["verb"] = ACTIVITY_POST;
2206 $datarray["gravity"] = GRAVITY_PARENT;
2208 $datarray["object"] = $xml;
2210 $datarray["body"] = $body;
2212 if ($provider_display_name != "")
2213 $datarray["app"] = $provider_display_name;
2215 $datarray["plink"] = self::plink($author, $guid);
2216 $datarray["private"] = (($public == "false") ? 1 : 0);
2217 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = datetime_convert("UTC", "UTC", $created_at);
2219 if (isset($address["address"]))
2220 $datarray["location"] = $address["address"];
2222 if (isset($address["lat"]) AND isset($address["lng"]))
2223 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2225 self::fetch_guid($datarray);
2226 $message_id = item_store($datarray);
2229 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2234 /* ************************************************************************************** *
2235 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2236 * ************************************************************************************** */
2239 * @brief returnes the handle of a contact
2241 * @param array $me contact array
2243 * @return string the handle in the format user@domain.tld
2245 private function my_handle($contact) {
2246 if ($contact["addr"] != "")
2247 return $contact["addr"];
2249 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2250 // So - just in case - we build the the address here.
2251 if ($contact["nickname"] != "")
2252 $nick = $contact["nickname"];
2254 $nick = $contact["nick"];
2256 return $nick."@".substr(App::get_baseurl(), strpos(App::get_baseurl(),"://") + 3);
2260 * @brief Creates the envelope for a public message
2262 * @param string $msg The message that is to be transmitted
2263 * @param array $user The record of the sender
2264 * @param array $contact Target of the communication
2265 * @param string $prvkey The private key of the sender
2266 * @param string $pubkey The public key of the receiver
2268 * @return string The envelope
2270 private function build_public_message($msg, $user, $contact, $prvkey, $pubkey) {
2272 logger("Message: ".$msg, LOGGER_DATA);
2274 $handle = self::my_handle($user);
2276 $b64url_data = base64url_encode($msg);
2278 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2280 $type = "application/xml";
2281 $encoding = "base64url";
2282 $alg = "RSA-SHA256";
2284 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2286 $signature = rsa_sign($signable_data,$prvkey);
2287 $sig = base64url_encode($signature);
2289 $xmldata = array("diaspora" => array("header" => array("author_id" => $handle),
2290 "me:env" => array("me:encoding" => "base64url",
2291 "me:alg" => "RSA-SHA256",
2293 "@attributes" => array("type" => "application/xml"),
2294 "me:sig" => $sig)));
2296 $namespaces = array("" => "https://joindiaspora.com/protocol",
2297 "me" => "http://salmon-protocol.org/ns/magic-env");
2299 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2301 logger("magic_env: ".$magic_env, LOGGER_DATA);
2306 * @brief Creates the envelope for a private message
2308 * @param string $msg The message that is to be transmitted
2309 * @param array $user The record of the sender
2310 * @param array $contact Target of the communication
2311 * @param string $prvkey The private key of the sender
2312 * @param string $pubkey The public key of the receiver
2314 * @return string The envelope
2316 private function build_private_message($msg, $user, $contact, $prvkey, $pubkey) {
2318 logger("Message: ".$msg, LOGGER_DATA);
2320 // without a public key nothing will work
2323 logger("pubkey missing: contact id: ".$contact["id"]);
2327 $inner_aes_key = random_string(32);
2328 $b_inner_aes_key = base64_encode($inner_aes_key);
2329 $inner_iv = random_string(16);
2330 $b_inner_iv = base64_encode($inner_iv);
2332 $outer_aes_key = random_string(32);
2333 $b_outer_aes_key = base64_encode($outer_aes_key);
2334 $outer_iv = random_string(16);
2335 $b_outer_iv = base64_encode($outer_iv);
2337 $handle = self::my_handle($user);
2339 $padded_data = pkcs5_pad($msg,16);
2340 $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
2342 $b64_data = base64_encode($inner_encrypted);
2345 $b64url_data = base64url_encode($b64_data);
2346 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2348 $type = "application/xml";
2349 $encoding = "base64url";
2350 $alg = "RSA-SHA256";
2352 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2354 $signature = rsa_sign($signable_data,$prvkey);
2355 $sig = base64url_encode($signature);
2357 $xmldata = array("decrypted_header" => array("iv" => $b_inner_iv,
2358 "aes_key" => $b_inner_aes_key,
2359 "author_id" => $handle));
2361 $decrypted_header = xml::from_array($xmldata, $xml, true);
2362 $decrypted_header = pkcs5_pad($decrypted_header,16);
2364 $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
2366 $outer_json = json_encode(array("iv" => $b_outer_iv, "key" => $b_outer_aes_key));
2368 $encrypted_outer_key_bundle = "";
2369 openssl_public_encrypt($outer_json, $encrypted_outer_key_bundle, $pubkey);
2371 $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
2373 logger("outer_bundle: ".$b64_encrypted_outer_key_bundle." key: ".$pubkey, LOGGER_DATA);
2375 $encrypted_header_json_object = json_encode(array("aes_key" => base64_encode($encrypted_outer_key_bundle),
2376 "ciphertext" => base64_encode($ciphertext)));
2377 $cipher_json = base64_encode($encrypted_header_json_object);
2379 $xmldata = array("diaspora" => array("encrypted_header" => $cipher_json,
2380 "me:env" => array("me:encoding" => "base64url",
2381 "me:alg" => "RSA-SHA256",
2383 "@attributes" => array("type" => "application/xml"),
2384 "me:sig" => $sig)));
2386 $namespaces = array("" => "https://joindiaspora.com/protocol",
2387 "me" => "http://salmon-protocol.org/ns/magic-env");
2389 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2391 logger("magic_env: ".$magic_env, LOGGER_DATA);
2396 * @brief Create the envelope for a message
2398 * @param string $msg The message that is to be transmitted
2399 * @param array $user The record of the sender
2400 * @param array $contact Target of the communication
2401 * @param string $prvkey The private key of the sender
2402 * @param string $pubkey The public key of the receiver
2403 * @param bool $public Is the message public?
2405 * @return string The message that will be transmitted to other servers
2407 private function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
2410 $magic_env = self::build_public_message($msg,$user,$contact,$prvkey,$pubkey);
2412 $magic_env = self::build_private_message($msg,$user,$contact,$prvkey,$pubkey);
2414 // The data that will be transmitted is double encoded via "urlencode", strange ...
2415 $slap = "xml=".urlencode(urlencode($magic_env));
2420 * @brief Creates a signature for a message
2422 * @param array $owner the array of the owner of the message
2423 * @param array $message The message that is to be signed
2425 * @return string The signature
2427 private function signature($owner, $message) {
2429 unset($sigmsg["author_signature"]);
2430 unset($sigmsg["parent_author_signature"]);
2432 $signed_text = implode(";", $sigmsg);
2434 return base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
2438 * @brief Transmit a message to a target server
2440 * @param array $owner the array of the item owner
2441 * @param array $contact Target of the communication
2442 * @param string $slap The message that is to be transmitted
2443 * @param bool $public_batch Is it a public post?
2444 * @param bool $queue_run Is the transmission called from the queue?
2445 * @param string $guid message guid
2447 * @return int Result of the transmission
2449 public static function transmit($owner, $contact, $slap, $public_batch, $queue_run=false, $guid = "") {
2453 $enabled = intval(get_config("system", "diaspora_enabled"));
2457 $logid = random_string(4);
2458 $dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
2460 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
2464 logger("transmit: ".$logid."-".$guid." ".$dest_url);
2466 if (!$queue_run && was_recently_delayed($contact["id"])) {
2469 if (!intval(get_config("system", "diaspora_test"))) {
2470 post_url($dest_url."/", $slap);
2471 $return_code = $a->get_curl_code();
2473 logger("test_mode");
2478 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
2480 if(!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
2481 logger("queue message");
2483 $r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
2484 intval($contact["id"]),
2485 dbesc(NETWORK_DIASPORA),
2487 intval($public_batch)
2490 logger("add_to_queue ignored - identical item already in queue");
2492 // queue message for redelivery
2493 add_to_queue($contact["id"], NETWORK_DIASPORA, $slap, $public_batch);
2497 return(($return_code) ? $return_code : (-1));
2502 * @brief Builds and transmit messages
2504 * @param array $owner the array of the item owner
2505 * @param array $contact Target of the communication
2506 * @param string $type The message type
2507 * @param array $message The message data
2508 * @param bool $public_batch Is it a public post?
2509 * @param string $guid message guid
2510 * @param bool $spool Should the transmission be spooled or transmitted?
2512 * @return int Result of the transmission
2514 private function build_and_transmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false) {
2516 $data = array("XML" => array("post" => array($type => $message)));
2518 $msg = xml::from_array($data, $xml);
2520 logger('message: '.$msg, LOGGER_DATA);
2521 logger('send guid '.$guid, LOGGER_DEBUG);
2523 $slap = self::build_message($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
2526 add_to_queue($contact['id'], NETWORK_DIASPORA, $slap, $public_batch);
2529 $return_code = self::transmit($owner, $contact, $slap, $public_batch, false, $guid);
2531 logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
2533 return $return_code;
2537 * @brief Sends a "share" message
2539 * @param array $owner the array of the item owner
2540 * @param array $contact Target of the communication
2542 * @return int The result of the transmission
2544 public static function send_share($owner,$contact) {
2546 $message = array("sender_handle" => self::my_handle($owner),
2547 "recipient_handle" => $contact["addr"]);
2549 return self::build_and_transmit($owner, $contact, "request", $message);
2553 * @brief sends an "unshare"
2555 * @param array $owner the array of the item owner
2556 * @param array $contact Target of the communication
2558 * @return int The result of the transmission
2560 public static function send_unshare($owner,$contact) {
2562 $message = array("post_guid" => $owner["guid"],
2563 "diaspora_handle" => self::my_handle($owner),
2564 "type" => "Person");
2566 return self::build_and_transmit($owner, $contact, "retraction", $message);
2570 * @brief Checks a message body if it is a reshare
2572 * @param string $body The message body that is to be check
2573 * @param bool $complete Should it be a complete check or a simple check?
2575 * @return array|bool Reshare details or "false" if no reshare
2577 public static function is_reshare($body, $complete = true) {
2578 $body = trim($body);
2580 // Skip if it isn't a pure repeated messages
2581 // Does it start with a share?
2582 if ((strpos($body, "[share") > 0) AND $complete)
2585 // Does it end with a share?
2586 if (strlen($body) > (strrpos($body, "[/share]") + 8))
2589 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2590 // Skip if there is no shared message in there
2591 if ($body == $attributes)
2594 // If we don't do the complete check we quit here
2599 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2600 if ($matches[1] != "")
2601 $guid = $matches[1];
2603 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2604 if ($matches[1] != "")
2605 $guid = $matches[1];
2608 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2609 dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2612 $ret["root_handle"] = self::handle_from_contact($r[0]["contact-id"]);
2613 $ret["root_guid"] = $guid;
2619 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2620 if ($matches[1] != "")
2621 $profile = $matches[1];
2623 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2624 if ($matches[1] != "")
2625 $profile = $matches[1];
2629 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2630 if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2634 preg_match("/link='(.*?)'/ism", $attributes, $matches);
2635 if ($matches[1] != "")
2636 $link = $matches[1];
2638 preg_match('/link="(.*?)"/ism', $attributes, $matches);
2639 if ($matches[1] != "")
2640 $link = $matches[1];
2642 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2643 if (($ret["root_guid"] == $link) OR (trim($ret["root_guid"]) == ""))
2650 * @brief Sends a post
2652 * @param array $item The item that will be exported
2653 * @param array $owner the array of the item owner
2654 * @param array $contact Target of the communication
2655 * @param bool $public_batch Is it a public post?
2657 * @return int The result of the transmission
2659 public static function send_status($item, $owner, $contact, $public_batch = false) {
2661 $myaddr = self::my_handle($owner);
2663 $public = (($item["private"]) ? "false" : "true");
2665 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
2667 // Detect a share element and do a reshare
2668 if (!$item['private'] AND ($ret = self::is_reshare($item["body"]))) {
2669 $message = array("root_diaspora_id" => $ret["root_handle"],
2670 "root_guid" => $ret["root_guid"],
2671 "guid" => $item["guid"],
2672 "diaspora_handle" => $myaddr,
2673 "public" => $public,
2674 "created_at" => $created,
2675 "provider_display_name" => $item["app"]);
2679 $title = $item["title"];
2680 $body = $item["body"];
2682 // convert to markdown
2683 $body = html_entity_decode(bb2diaspora($body));
2687 $body = "## ".html_entity_decode($title)."\n\n".$body;
2689 if ($item["attach"]) {
2690 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
2692 $body .= "\n".t("Attachments:")."\n";
2693 foreach($matches as $mtch)
2694 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
2698 $location = array();
2700 if ($item["location"] != "")
2701 $location["address"] = $item["location"];
2703 if ($item["coord"] != "") {
2704 $coord = explode(" ", $item["coord"]);
2705 $location["lat"] = $coord[0];
2706 $location["lng"] = $coord[1];
2709 $message = array("raw_message" => $body,
2710 "location" => $location,
2711 "guid" => $item["guid"],
2712 "diaspora_handle" => $myaddr,
2713 "public" => $public,
2714 "created_at" => $created,
2715 "provider_display_name" => $item["app"]);
2717 if (count($location) == 0)
2718 unset($message["location"]);
2720 $type = "status_message";
2723 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
2727 * @brief Creates a "like" object
2729 * @param array $item The item that will be exported
2730 * @param array $owner the array of the item owner
2732 * @return array The data for a "like"
2734 private function construct_like($item, $owner) {
2736 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
2737 dbesc($item["thr-parent"]));
2743 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
2746 return(array("positive" => $positive,
2747 "guid" => $item["guid"],
2748 "target_type" => $target_type,
2749 "parent_guid" => $parent["guid"],
2750 "author_signature" => "",
2751 "diaspora_handle" => self::my_handle($owner)));
2755 * @brief Creates the object for a comment
2757 * @param array $item The item that will be exported
2758 * @param array $owner the array of the item owner
2760 * @return array The data for a comment
2762 private function construct_comment($item, $owner) {
2764 $p = q("SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
2765 intval($item["parent"]),
2766 intval($item["parent"])
2774 $text = html_entity_decode(bb2diaspora($item["body"]));
2776 return(array("guid" => $item["guid"],
2777 "parent_guid" => $parent["guid"],
2778 "author_signature" => "",
2780 "diaspora_handle" => self::my_handle($owner)));
2784 * @brief Send a like or a comment
2786 * @param array $item The item that will be exported
2787 * @param array $owner the array of the item owner
2788 * @param array $contact Target of the communication
2789 * @param bool $public_batch Is it a public post?
2791 * @return int The result of the transmission
2793 public static function send_followup($item,$owner,$contact,$public_batch = false) {
2795 if($item['verb'] === ACTIVITY_LIKE) {
2796 $message = self::construct_like($item, $owner);
2799 $message = self::construct_comment($item, $owner);
2806 $message["author_signature"] = self::signature($owner, $message);
2808 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
2812 * @brief Creates a message from a signature record entry
2814 * @param array $item The item that will be exported
2815 * @param array $signature The entry of the "sign" record
2817 * @return string The message
2819 private function message_from_signature($item, $signature) {
2821 // Split the signed text
2822 $signed_parts = explode(";", $signature['signed_text']);
2824 if ($item["deleted"])
2825 $message = array("parent_author_signature" => "",
2826 "target_guid" => $signed_parts[0],
2827 "target_type" => $signed_parts[1],
2828 "sender_handle" => $signature['signer'],
2829 "target_author_signature" => $signature['signature']);
2830 elseif ($item['verb'] === ACTIVITY_LIKE)
2831 $message = array("positive" => $signed_parts[0],
2832 "guid" => $signed_parts[1],
2833 "target_type" => $signed_parts[2],
2834 "parent_guid" => $signed_parts[3],
2835 "parent_author_signature" => "",
2836 "author_signature" => $signature['signature'],
2837 "diaspora_handle" => $signed_parts[4]);
2839 // Remove the comment guid
2840 $guid = array_shift($signed_parts);
2842 // Remove the parent guid
2843 $parent_guid = array_shift($signed_parts);
2845 // Remove the handle
2846 $handle = array_pop($signed_parts);
2848 // Glue the parts together
2849 $text = implode(";", $signed_parts);
2851 $message = array("guid" => $guid,
2852 "parent_guid" => $parent_guid,
2853 "parent_author_signature" => "",
2854 "author_signature" => $signature['signature'],
2855 "text" => implode(";", $signed_parts),
2856 "diaspora_handle" => $handle);
2862 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
2864 * @param array $item The item that will be exported
2865 * @param array $owner the array of the item owner
2866 * @param array $contact Target of the communication
2867 * @param bool $public_batch Is it a public post?
2869 * @return int The result of the transmission
2871 public static function send_relay($item, $owner, $contact, $public_batch = false) {
2873 if ($item["deleted"])
2874 return self::send_retraction($item, $owner, $contact, $public_batch, true);
2875 elseif ($item['verb'] === ACTIVITY_LIKE)
2880 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
2882 // fetch the original signature
2884 $r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
2885 intval($item["id"]));
2888 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
2894 // Old way - is used by the internal Friendica functions
2895 /// @todo Change all signatur storing functions to the new format
2896 if ($signature['signed_text'] AND $signature['signature'] AND $signature['signer'])
2897 $message = self::message_from_signature($item, $signature);
2899 $msg = json_decode($signature['signed_text'], true);
2902 if (is_array($msg)) {
2903 foreach ($msg AS $field => $data) {
2904 if (!$item["deleted"]) {
2905 if ($field == "author")
2906 $field = "diaspora_handle";
2907 if ($field == "parent_type")
2908 $field = "target_type";
2911 $message[$field] = $data;
2914 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
2917 $message["parent_author_signature"] = self::signature($owner, $message);
2919 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
2921 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
2925 * @brief Sends a retraction (deletion) of a message, like or comment
2927 * @param array $item The item that will be exported
2928 * @param array $owner the array of the item owner
2929 * @param array $contact Target of the communication
2930 * @param bool $public_batch Is it a public post?
2931 * @param bool $relay Is the retraction transmitted from a relay?
2933 * @return int The result of the transmission
2935 public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
2937 $itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
2939 // Check whether the retraction is for a top-level post or whether it's a relayable
2940 if ($item["uri"] !== $item["parent-uri"]) {
2941 $msg_type = "relayable_retraction";
2942 $target_type = (($item["verb"] === ACTIVITY_LIKE) ? "Like" : "Comment");
2944 $msg_type = "signed_retraction";
2945 $target_type = "StatusMessage";
2948 if ($relay AND ($item["uri"] !== $item["parent-uri"]))
2949 $signature = "parent_author_signature";
2951 $signature = "target_author_signature";
2953 $signed_text = $item["guid"].";".$target_type;
2955 $message = array("target_guid" => $item['guid'],
2956 "target_type" => $target_type,
2957 "sender_handle" => $itemaddr,
2958 $signature => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
2960 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
2962 return self::build_and_transmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
2966 * @brief Sends a mail
2968 * @param array $item The item that will be exported
2969 * @param array $owner The owner
2970 * @param array $contact Target of the communication
2972 * @return int The result of the transmission
2974 public static function send_mail($item, $owner, $contact) {
2976 $myaddr = self::my_handle($owner);
2978 $r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
2979 intval($item["convid"]),
2980 intval($item["uid"])
2984 logger("conversation not found.");
2990 "guid" => $cnv["guid"],
2991 "subject" => $cnv["subject"],
2992 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
2993 "diaspora_handle" => $cnv["creator"],
2994 "participant_handles" => $cnv["recips"]
2997 $body = bb2diaspora($item["body"]);
2998 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
3000 $signed_text = $item["guid"].";".$cnv["guid"].";".$body.";".$created.";".$myaddr.";".$cnv['guid'];
3001 $sig = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
3004 "guid" => $item["guid"],
3005 "parent_guid" => $cnv["guid"],
3006 "parent_author_signature" => $sig,
3007 "author_signature" => $sig,
3009 "created_at" => $created,
3010 "diaspora_handle" => $myaddr,
3011 "conversation_guid" => $cnv["guid"]
3014 if ($item["reply"]) {
3018 $message = array("guid" => $cnv["guid"],
3019 "subject" => $cnv["subject"],
3020 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
3022 "diaspora_handle" => $cnv["creator"],
3023 "participant_handles" => $cnv["recips"]);
3025 $type = "conversation";
3028 return self::build_and_transmit($owner, $contact, $type, $message, false, $item["guid"]);
3032 * @brief Sends profile data
3034 * @param int $uid The user id
3036 public static function send_profile($uid) {
3041 $recips = q("SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
3042 AND `uid` = %d AND `rel` != %d",
3043 dbesc(NETWORK_DIASPORA),
3045 intval(CONTACT_IS_SHARING)
3050 $r = q("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
3052 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
3053 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
3054 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
3063 $handle = $profile["addr"];
3064 $first = ((strpos($profile['name'],' ')
3065 ? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']));
3066 $last = (($first === $profile['name']) ? '' : trim(substr($profile['name'], strlen($first))));
3067 $large = App::get_baseurl().'/photo/custom/300/'.$profile['uid'].'.jpg';
3068 $medium = App::get_baseurl().'/photo/custom/100/'.$profile['uid'].'.jpg';
3069 $small = App::get_baseurl().'/photo/custom/50/' .$profile['uid'].'.jpg';
3070 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
3072 if ($searchable === 'true') {
3073 $dob = '1000-00-00';
3075 if (($profile['dob']) && ($profile['dob'] != '0000-00-00'))
3076 $dob = ((intval($profile['dob'])) ? intval($profile['dob']) : '1000') .'-'. datetime_convert('UTC','UTC',$profile['dob'],'m-d');
3078 $about = $profile['about'];
3079 $about = strip_tags(bbcode($about));
3081 $location = formatted_location($profile);
3083 if ($profile['pub_keywords']) {
3084 $kw = str_replace(',',' ',$profile['pub_keywords']);
3085 $kw = str_replace(' ',' ',$kw);
3086 $arr = explode(' ',$profile['pub_keywords']);
3088 for($x = 0; $x < 5; $x ++) {
3090 $tags .= '#'. trim($arr[$x]) .' ';
3094 $tags = trim($tags);
3097 $message = array("diaspora_handle" => $handle,
3098 "first_name" => $first,
3099 "last_name" => $last,
3100 "image_url" => $large,
3101 "image_url_medium" => $medium,
3102 "image_url_small" => $small,
3104 "gender" => $profile['gender'],
3106 "location" => $location,
3107 "searchable" => $searchable,
3108 "tag_string" => $tags);
3110 foreach($recips as $recip)
3111 self::build_and_transmit($profile, $recip, "profile", $message, false, "", true);
3115 * @brief Stores the signature for likes that are created on our system
3117 * @param array $contact The contact array of the "like"
3118 * @param int $post_id The post id of the "like"
3120 * @return bool Success
3122 public static function store_like_signature($contact, $post_id) {
3124 // Is the contact the owner? Then fetch the private key
3125 if (!$contact['self'] OR ($contact['uid'] == 0)) {
3126 logger("No owner post, so not storing signature", LOGGER_DEBUG);
3130 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
3134 $contact["uprvkey"] = $r[0]['prvkey'];
3136 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
3140 if (!in_array($r[0]["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE)))
3143 $message = self::construct_like($r[0], $contact);
3144 $message["author_signature"] = self::signature($contact, $message);
3146 // In the future we will store the signature more flexible to support new fields.
3147 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3148 // (We are transmitting this data here via DFRN)
3150 $signed_text = $message["positive"].";".$message["guid"].";".$message["target_type"].";".
3151 $message["parent_guid"].";".$message["diaspora_handle"];
3153 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3155 dbesc($signed_text),
3156 dbesc($message["author_signature"]),
3157 dbesc($message["diaspora_handle"])
3160 // This here will replace the lines above, once Diaspora changed its protocol
3161 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3162 // intval($message_id),
3163 // dbesc(json_encode($message))
3166 logger('Stored diaspora like signature');
3171 * @brief Stores the signature for comments that are created on our system
3173 * @param array $item The item array of the comment
3174 * @param array $contact The contact array of the item owner
3175 * @param string $uprvkey The private key of the sender
3176 * @param int $message_id The message id of the comment
3178 * @return bool Success
3180 public static function store_comment_signature($item, $contact, $uprvkey, $message_id) {
3182 if ($uprvkey == "") {
3183 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
3187 $contact["uprvkey"] = $uprvkey;
3189 $message = self::construct_comment($item, $contact);
3190 $message["author_signature"] = self::signature($contact, $message);
3192 // In the future we will store the signature more flexible to support new fields.
3193 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3194 // (We are transmitting this data here via DFRN)
3195 $signed_text = $message["guid"].";".$message["parent_guid"].";".
3196 $message["text"].";".$message["diaspora_handle"];
3198 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3199 intval($message_id),
3200 dbesc($signed_text),
3201 dbesc($message["author_signature"]),
3202 dbesc($message["diaspora_handle"])
3205 // This here will replace the lines above, once Diaspora changed its protocol
3206 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3207 // intval($message_id),
3208 // dbesc(json_encode($message))
3211 logger('Stored diaspora comment signature');