3 * @file include/diaspora.php
4 * @brief The implementation of the diaspora protocol
6 * The new protocol is described here: http://diaspora.github.io/diaspora_federation/index.html
7 * Currently this implementation here interprets the old and the new protocol and sends the old one.
8 * This will change in the future.
11 require_once("include/items.php");
12 require_once("include/bb2diaspora.php");
13 require_once("include/Scrape.php");
14 require_once("include/Contact.php");
15 require_once("include/Photo.php");
16 require_once("include/socgraph.php");
17 require_once("include/group.php");
18 require_once("include/xml.php");
19 require_once("include/datetime.php");
20 require_once("include/queue_fn.php");
23 * @brief This class contain functions to create and send Diaspora XML files
29 * @brief Return a list of relay servers
31 * This is an experimental Diaspora feature.
33 * @return array of relay servers
35 public static function relay_list() {
37 $serverdata = get_config("system", "relay_server");
38 if ($serverdata == "")
43 $servers = explode(",", $serverdata);
45 foreach($servers AS $server) {
46 $server = trim($server);
47 $batch = $server."/receive/public";
49 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
52 $addr = "relay@".str_replace("http://", "", normalise_link($server));
54 $r = q("INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
55 VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
60 dbesc(normalise_link($server)),
62 dbesc(NETWORK_DIASPORA),
63 intval(CONTACT_IS_FOLLOWER),
64 dbesc(datetime_convert()),
65 dbesc(datetime_convert()),
66 dbesc(datetime_convert())
69 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
71 $relay[] = $relais[0];
73 $relay[] = $relais[0];
80 * @brief repairs a signature that was double encoded
82 * The function is unused at the moment. It was copied from the old implementation.
84 * @param string $signature The signature
85 * @param string $handle The handle of the signature owner
86 * @param integer $level This value is only set inside this function to avoid endless loops
88 * @return string the repaired signature
90 private function repair_signature($signature, $handle = "", $level = 1) {
95 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
96 $signature = base64_decode($signature);
97 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
99 // Do a recursive call to be able to fix even multiple levels
101 $signature = self::repair_signature($signature, $handle, ++$level);
108 * @brief verify the envelope and return the verified data
110 * @param string $envelope The magic envelope
112 * @return string verified data
114 private function verify_magic_envelope($envelope) {
116 $basedom = parse_xml_string($envelope, false);
118 if (!is_object($basedom)) {
119 logger("Envelope is no XML file");
123 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
125 if (sizeof($children) == 0) {
126 logger("XML has no children");
132 $data = base64url_decode($children->data);
133 $type = $children->data->attributes()->type[0];
135 $encoding = $children->encoding;
137 $alg = $children->alg;
139 $sig = base64url_decode($children->sig);
140 $key_id = $children->sig->attributes()->key_id[0];
142 $handle = base64url_decode($key_id);
144 $b64url_data = base64url_encode($data);
145 $msg = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
147 $signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
149 $key = self::key($handle);
151 $verify = rsa_verify($signable_data, $sig, $key);
153 logger('Message did not verify. Discarding.');
161 * @brief: Decodes incoming Diaspora message
163 * @param array $importer Array of the importer user
164 * @param string $xml urldecoded Diaspora salmon
167 * 'message' -> decoded Diaspora XML message
168 * 'author' -> author diaspora handle
169 * 'key' -> author public key (converted to pkcs#8)
171 public static function decode($importer, $xml) {
174 $basedom = parse_xml_string($xml);
176 if (!is_object($basedom))
179 $children = $basedom->children('https://joindiaspora.com/protocol');
181 if($children->header) {
183 $author_link = str_replace('acct:','',$children->header->author_id);
186 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
188 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
189 $ciphertext = base64_decode($encrypted_header->ciphertext);
191 $outer_key_bundle = '';
192 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
194 $j_outer_key_bundle = json_decode($outer_key_bundle);
196 $outer_iv = base64_decode($j_outer_key_bundle->iv);
197 $outer_key = base64_decode($j_outer_key_bundle->key);
199 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
202 $decrypted = pkcs5_unpad($decrypted);
204 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
205 $idom = parse_xml_string($decrypted,false);
207 $inner_iv = base64_decode($idom->iv);
208 $inner_aes_key = base64_decode($idom->aes_key);
210 $author_link = str_replace('acct:','',$idom->author_id);
213 $dom = $basedom->children(NAMESPACE_SALMON_ME);
215 // figure out where in the DOM tree our data is hiding
217 if($dom->provenance->data)
218 $base = $dom->provenance;
219 elseif($dom->env->data)
225 logger('unable to locate salmon data in xml');
226 http_status_exit(400);
230 // Stash the signature away for now. We have to find their key or it won't be good for anything.
231 $signature = base64url_decode($base->sig);
235 // strip whitespace so our data element will return to one big base64 blob
236 $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
239 // stash away some other stuff for later
241 $type = $base->data[0]->attributes()->type[0];
242 $keyhash = $base->sig[0]->attributes()->keyhash[0];
243 $encoding = $base->encoding;
247 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
251 $data = base64url_decode($data);
255 $inner_decrypted = $data;
258 // Decode the encrypted blob
260 $inner_encrypted = base64_decode($data);
261 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
262 $inner_decrypted = pkcs5_unpad($inner_decrypted);
266 logger('Could not retrieve author URI.');
267 http_status_exit(400);
269 // Once we have the author URI, go to the web and try to find their public key
270 // (first this will look it up locally if it is in the fcontact cache)
271 // This will also convert diaspora public key from pkcs#1 to pkcs#8
273 logger('Fetching key for '.$author_link);
274 $key = self::key($author_link);
277 logger('Could not retrieve author key.');
278 http_status_exit(400);
281 $verify = rsa_verify($signed_data,$signature,$key);
284 logger('Message did not verify. Discarding.');
285 http_status_exit(400);
288 logger('Message verified.');
290 return array('message' => (string)$inner_decrypted,
291 'author' => unxmlify($author_link),
292 'key' => (string)$key);
297 * @brief Dispatches public messages and find the fitting receivers
299 * @param array $msg The post that will be dispatched
301 * @return int The message id of the generated message, "true" or "false" if there was an error
303 public static function dispatch_public($msg) {
305 $enabled = intval(get_config("system", "diaspora_enabled"));
307 logger("diaspora is disabled");
311 // Use a dummy importer to import the data for the public copy
312 $importer = array("uid" => 0, "page-flags" => PAGE_FREELOVE);
313 $message_id = self::dispatch($importer,$msg);
315 // Now distribute it to the followers
316 $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
317 (SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
318 AND NOT `account_expired` AND NOT `account_removed`",
319 dbesc(NETWORK_DIASPORA),
320 dbesc($msg["author"])
323 foreach ($r as $rr) {
324 logger("delivering to: ".$rr["username"]);
325 self::dispatch($rr,$msg);
328 logger("No subscribers for ".$msg["author"]." ".print_r($msg, true));
334 * @brief Dispatches the different message types to the different functions
336 * @param array $importer Array of the importer user
337 * @param array $msg The post that will be dispatched
339 * @return int The message id of the generated message, "true" or "false" if there was an error
341 public static function dispatch($importer, $msg) {
343 // The sender is the handle of the contact that sent the message.
344 // This will often be different with relayed messages (for example "like" and "comment")
345 $sender = $msg["author"];
347 if (!self::valid_posting($msg, $fields)) {
348 logger("Invalid posting");
352 $type = $fields->getName();
354 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
357 case "account_deletion":
358 return self::receive_account_deletion($importer, $fields);
361 return self::receive_comment($importer, $sender, $fields, $msg["message"]);
364 return self::receive_contact_request($importer, $fields);
367 return self::receive_conversation($importer, $msg, $fields);
370 return self::receive_like($importer, $sender, $fields);
373 return self::receive_message($importer, $fields);
375 case "participation": // Not implemented
376 return self::receive_participation($importer, $fields);
378 case "photo": // Not implemented
379 return self::receive_photo($importer, $fields);
381 case "poll_participation": // Not implemented
382 return self::receive_poll_participation($importer, $fields);
385 return self::receive_profile($importer, $fields);
388 return self::receive_reshare($importer, $fields, $msg["message"]);
391 return self::receive_retraction($importer, $sender, $fields);
393 case "status_message":
394 return self::receive_status_message($importer, $fields, $msg["message"]);
397 logger("Unknown message type ".$type);
405 * @brief Checks if a posting is valid and fetches the data fields.
407 * This function does not only check the signature.
408 * It also does the conversion between the old and the new diaspora format.
410 * @param array $msg Array with the XML, the sender handle and the sender signature
411 * @param object $fields SimpleXML object that contains the posting when it is valid
413 * @return bool Is the posting valid?
415 private function valid_posting($msg, &$fields) {
417 $data = parse_xml_string($msg["message"], false);
419 if (!is_object($data)) {
420 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
424 $first_child = $data->getName();
426 // Is this the new or the old version?
427 if ($data->getName() == "XML") {
429 foreach ($data->post->children() as $child)
436 $type = $element->getName();
439 logger("Got message type ".$type.": ".$msg["message"], LOGGER_DATA);
441 // All retractions are handled identically from now on.
442 // In the new version there will only be "retraction".
443 if (in_array($type, array("signed_retraction", "relayable_retraction")))
444 $type = "retraction";
446 if ($type == "request")
449 $fields = new SimpleXMLElement("<".$type."/>");
453 foreach ($element->children() AS $fieldname => $entry) {
455 // Translation for the old XML structure
456 if ($fieldname == "diaspora_handle")
457 $fieldname = "author";
459 if ($fieldname == "participant_handles")
460 $fieldname = "participants";
462 if (in_array($type, array("like", "participation"))) {
463 if ($fieldname == "target_type")
464 $fieldname = "parent_type";
467 if ($fieldname == "sender_handle")
468 $fieldname = "author";
470 if ($fieldname == "recipient_handle")
471 $fieldname = "recipient";
473 if ($fieldname == "root_diaspora_id")
474 $fieldname = "root_author";
476 if ($type == "retraction") {
477 if ($fieldname == "post_guid")
478 $fieldname = "target_guid";
480 if ($fieldname == "type")
481 $fieldname = "target_type";
485 if (($fieldname == "author_signature") AND ($entry != ""))
486 $author_signature = base64_decode($entry);
487 elseif (($fieldname == "parent_author_signature") AND ($entry != ""))
488 $parent_author_signature = base64_decode($entry);
489 elseif (!in_array($fieldname, array("author_signature", "parent_author_signature", "target_author_signature"))) {
490 if ($signed_data != "") {
492 $signed_data_parent .= ";";
495 $signed_data .= $entry;
497 if (!in_array($fieldname, array("parent_author_signature", "target_author_signature")) OR
498 ($orig_type == "relayable_retraction"))
499 xml::copy($entry, $fields, $fieldname);
502 // This is something that shouldn't happen at all.
503 if (in_array($type, array("status_message", "reshare", "profile")))
504 if ($msg["author"] != $fields->author) {
505 logger("Message handle is not the same as envelope sender. Quitting this message.");
509 // Only some message types have signatures. So we quit here for the other types.
510 if (!in_array($type, array("comment", "message", "like")))
513 // No author_signature? This is a must, so we quit.
514 if (!isset($author_signature)) {
515 logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
519 if (isset($parent_author_signature)) {
520 $key = self::key($msg["author"]);
522 if (!rsa_verify($signed_data, $parent_author_signature, $key, "sha256")) {
523 logger("No valid parent author signature for author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
528 $key = self::key($fields->author);
530 if (!rsa_verify($signed_data, $author_signature, $key, "sha256")) {
531 logger("No valid author signature for author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
538 * @brief Fetches the public key for a given handle
540 * @param string $handle The handle
542 * @return string The public key
544 private function key($handle) {
545 $handle = strval($handle);
547 logger("Fetching diaspora key for: ".$handle);
549 $r = self::person_by_handle($handle);
557 * @brief Fetches data for a given handle
559 * @param string $handle The handle
561 * @return array the queried data
563 private function person_by_handle($handle) {
565 $r = q("SELECT * FROM `fcontact` WHERE `network` = '%s' AND `addr` = '%s' LIMIT 1",
566 dbesc(NETWORK_DIASPORA),
571 logger("In cache ".print_r($r,true), LOGGER_DEBUG);
573 // update record occasionally so it doesn't get stale
574 $d = strtotime($person["updated"]." +00:00");
575 if ($d < strtotime("now - 14 days"))
578 if ($person["guid"] == "")
582 if (!$person OR $update) {
583 logger("create or refresh", LOGGER_DEBUG);
584 $r = probe_url($handle, PROBE_DIASPORA);
586 // Note that Friendica contacts will return a "Diaspora person"
587 // if Diaspora connectivity is enabled on their server
588 if ($r AND ($r["network"] === NETWORK_DIASPORA)) {
589 self::add_fcontact($r, $update);
597 * @brief Updates the fcontact table
599 * @param array $arr The fcontact data
600 * @param bool $update Update or insert?
602 * @return string The id of the fcontact entry
604 private function add_fcontact($arr, $update = false) {
607 $r = q("UPDATE `fcontact` SET
621 WHERE `url` = '%s' AND `network` = '%s'",
623 dbesc($arr["photo"]),
624 dbesc($arr["request"]),
626 dbesc(strtolower($arr["addr"])),
628 dbesc($arr["batch"]),
629 dbesc($arr["notify"]),
631 dbesc($arr["confirm"]),
632 dbesc($arr["alias"]),
633 dbesc($arr["pubkey"]),
634 dbesc(datetime_convert()),
636 dbesc($arr["network"])
639 $r = q("INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`, `guid`,
640 `batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
641 VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
644 dbesc($arr["photo"]),
645 dbesc($arr["request"]),
649 dbesc($arr["batch"]),
650 dbesc($arr["notify"]),
652 dbesc($arr["confirm"]),
653 dbesc($arr["network"]),
654 dbesc($arr["alias"]),
655 dbesc($arr["pubkey"]),
656 dbesc(datetime_convert())
664 * @brief get a handle (user@domain.tld) from a given contact id or gcontact id
666 * @param int $contact_id The id in the contact table
667 * @param int $gcontact_id The id in the gcontact table
669 * @return string the handle
671 public static function handle_from_contact($contact_id, $gcontact_id = 0) {
674 logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
676 if ($gcontact_id != 0) {
677 $r = q("SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
678 intval($gcontact_id));
680 if (dbm::is_result($r)) {
681 return strtolower($r[0]["addr"]);
685 $r = q("SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
686 intval($contact_id));
688 if (dbm::is_result($r)) {
691 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
693 if ($contact['addr'] != "") {
694 $handle = $contact['addr'];
696 $baseurl_start = strpos($contact['url'],'://') + 3;
697 $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
698 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
699 $handle = $contact['nick'].'@'.$baseurl;
703 return strtolower($handle);
707 * @brief get a url (scheme://domain.tld/u/user) from a given Diaspora*
710 * @param mixed $fcontact_guid Hexadecimal string guid
712 * @return string the contact url or null
714 public static function url_from_contact_guid($fcontact_guid) {
715 logger("fcontact guid is ".$fcontact_guid, LOGGER_DEBUG);
717 $r = q("SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
718 dbesc(NETWORK_DIASPORA),
719 dbesc($fcontact_guid)
722 if (dbm::is_result($r)) {
730 * @brief Get a contact id for a given handle
732 * @param int $uid The user id
733 * @param string $handle The handle in the format user@domain.tld
735 * @return The contact id
737 private function contact_by_handle($uid, $handle) {
738 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
746 $handle_parts = explode("@", $handle);
747 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
748 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
760 * @brief Check if posting is allowed for this contact
762 * @param array $importer Array of the importer user
763 * @param array $contact The contact that is checked
764 * @param bool $is_comment Is the check for a comment?
766 * @return bool is the contact allowed to post?
768 private function post_allow($importer, $contact, $is_comment = false) {
770 // perhaps we were already sharing with this person. Now they're sharing with us.
771 // That makes us friends.
772 // Normally this should have handled by getting a request - but this could get lost
773 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
774 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
775 intval(CONTACT_IS_FRIEND),
776 intval($contact["id"]),
777 intval($importer["uid"])
779 $contact["rel"] = CONTACT_IS_FRIEND;
780 logger("defining user ".$contact["nick"]." as friend");
783 if(($contact["blocked"]) || ($contact["readonly"]) || ($contact["archive"]))
785 if($contact["rel"] == CONTACT_IS_SHARING || $contact["rel"] == CONTACT_IS_FRIEND)
787 if($contact["rel"] == CONTACT_IS_FOLLOWER)
788 if(($importer["page-flags"] == PAGE_COMMUNITY) OR $is_comment)
791 // Messages for the global users are always accepted
792 if ($importer["uid"] == 0)
799 * @brief Fetches the contact id for a handle and checks if posting is allowed
801 * @param array $importer Array of the importer user
802 * @param string $handle The checked handle in the format user@domain.tld
803 * @param bool $is_comment Is the check for a comment?
805 * @return array The contact data
807 private function allowed_contact_by_handle($importer, $handle, $is_comment = false) {
808 $contact = self::contact_by_handle($importer["uid"], $handle);
810 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
814 if (!self::post_allow($importer, $contact, $is_comment)) {
815 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
822 * @brief Does the message already exists on the system?
824 * @param int $uid The user id
825 * @param string $guid The guid of the message
827 * @return int|bool message id if the message already was stored into the system - or false.
829 private function message_exists($uid, $guid) {
830 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
836 logger("message ".$guid." already exists for user ".$uid);
844 * @brief Checks for links to posts in a message
846 * @param array $item The item array
848 private function fetch_guid($item) {
849 preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
850 function ($match) use ($item){
851 return(self::fetch_guid_sub($match, $item));
856 * @brief Checks for relative /people/* links in an item body to match local
857 * contacts or prepends the remote host taken from the author link.
859 * @param string $body The item body to replace links from
860 * @param string $author_link The author link for missing local contact fallback
862 * @return the replaced string
864 public function replace_people_guid($body, $author_link) {
865 $return = preg_replace_callback("&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
866 function ($match) use ($author_link) {
868 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
869 // 1 => '0123456789abcdef'
871 $handle = self::url_from_contact_guid($match[1]);
874 $return = '@[url='.$handle.']'.$match[2].'[/url]';
876 // No local match, restoring absolute remote URL from author scheme and host
877 $author_url = parse_url($author_link);
878 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
888 * @brief sub function of "fetch_guid" which checks for links in messages
890 * @param array $match array containing a link that has to be checked for a message link
891 * @param array $item The item array
893 private function fetch_guid_sub($match, $item) {
894 if (!self::store_by_guid($match[1], $item["author-link"]))
895 self::store_by_guid($match[1], $item["owner-link"]);
899 * @brief Fetches an item with a given guid from a given server
901 * @param string $guid the message guid
902 * @param string $server The server address
903 * @param int $uid The user id of the user
905 * @return int the message id of the stored message or false
907 private function store_by_guid($guid, $server, $uid = 0) {
908 $serverparts = parse_url($server);
909 $server = $serverparts["scheme"]."://".$serverparts["host"];
911 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
913 $msg = self::message($guid, $server);
918 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
920 // Now call the dispatcher
921 return self::dispatch_public($msg);
925 * @brief Fetches a message from a server
927 * @param string $guid message guid
928 * @param string $server The url of the server
929 * @param int $level Endless loop prevention
932 * 'message' => The message XML
933 * 'author' => The author handle
934 * 'key' => The public key of the author
936 private function message($guid, $server, $level = 0) {
941 // This will work for new Diaspora servers and Friendica servers from 3.5
942 $source_url = $server."/fetch/post/".$guid;
943 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
945 $envelope = fetch_url($source_url);
947 logger("Envelope was fetched.", LOGGER_DEBUG);
948 $x = self::verify_magic_envelope($envelope);
950 logger("Envelope could not be verified.", LOGGER_DEBUG);
952 logger("Envelope was verified.", LOGGER_DEBUG);
956 // This will work for older Diaspora and Friendica servers
958 $source_url = $server."/p/".$guid.".xml";
959 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
961 $x = fetch_url($source_url);
966 $source_xml = parse_xml_string($x, false);
968 if (!is_object($source_xml))
971 if ($source_xml->post->reshare) {
972 // Reshare of a reshare - old Diaspora version
973 logger("Message is a reshare", LOGGER_DEBUG);
974 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
975 } elseif ($source_xml->getName() == "reshare") {
976 // Reshare of a reshare - new Diaspora version
977 logger("Message is a new reshare", LOGGER_DEBUG);
978 return self::message($source_xml->root_guid, $server, ++$level);
983 // Fetch the author - for the old and the new Diaspora version
984 if ($source_xml->post->status_message->diaspora_handle)
985 $author = (string)$source_xml->post->status_message->diaspora_handle;
986 elseif ($source_xml->author AND ($source_xml->getName() == "status_message"))
987 $author = (string)$source_xml->author;
989 // If this isn't a "status_message" then quit
991 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
995 $msg = array("message" => $x, "author" => $author);
997 $msg["key"] = self::key($msg["author"]);
1003 * @brief Fetches the item record of a given guid
1005 * @param int $uid The user id
1006 * @param string $guid message guid
1007 * @param string $author The handle of the item
1008 * @param array $contact The contact of the item owner
1010 * @return array the item record
1012 private function parent_item($uid, $guid, $author, $contact) {
1013 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1014 `author-name`, `author-link`, `author-avatar`,
1015 `owner-name`, `owner-link`, `owner-avatar`
1016 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1017 intval($uid), dbesc($guid));
1020 $result = self::store_by_guid($guid, $contact["url"], $uid);
1023 $person = self::person_by_handle($author);
1024 $result = self::store_by_guid($guid, $person["url"], $uid);
1028 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
1030 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1031 `author-name`, `author-link`, `author-avatar`,
1032 `owner-name`, `owner-link`, `owner-avatar`
1033 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1034 intval($uid), dbesc($guid));
1039 logger("parent item not found: parent: ".$guid." - user: ".$uid);
1042 logger("parent item found: parent: ".$guid." - user: ".$uid);
1048 * @brief returns contact details
1050 * @param array $contact The default contact if the person isn't found
1051 * @param array $person The record of the person
1052 * @param int $uid The user id
1055 * 'cid' => contact id
1056 * 'network' => network type
1058 private function author_contact_by_url($contact, $person, $uid) {
1060 $r = q("SELECT `id`, `network`, `url` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
1061 dbesc(normalise_link($person["url"])), intval($uid));
1064 $network = $r[0]["network"];
1066 // We are receiving content from a user that is about to be terminated
1067 // This means the user is vital, so we remove a possible termination date.
1068 unmark_for_death($contact);
1070 $cid = $contact["id"];
1071 $network = NETWORK_DIASPORA;
1074 return array("cid" => $cid, "network" => $network);
1078 * @brief Is the profile a hubzilla profile?
1080 * @param string $url The profile link
1082 * @return bool is it a hubzilla server?
1084 public static function is_redmatrix($url) {
1085 return(strstr($url, "/channel/"));
1089 * @brief Generate a post link with a given handle and message guid
1091 * @param string $addr The user handle
1092 * @param string $guid message guid
1094 * @return string the post link
1096 private function plink($addr, $guid) {
1097 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
1101 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1103 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
1104 // So we try another way as well.
1105 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
1107 $r[0]["network"] = $s[0]["network"];
1109 if ($r[0]["network"] == NETWORK_DFRN)
1110 return(str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/"));
1112 if (self::is_redmatrix($r[0]["url"]))
1113 return $r[0]["url"]."/?f=&mid=".$guid;
1115 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1119 * @brief Processes an account deletion
1121 * @param array $importer Array of the importer user
1122 * @param object $data The message object
1124 * @return bool Success
1126 private function receive_account_deletion($importer, $data) {
1128 /// @todo Account deletion should remove the contact from the global contacts as well
1130 $author = notags(unxmlify($data->author));
1132 $contact = self::contact_by_handle($importer["uid"], $author);
1134 logger("cannot find contact for author: ".$author);
1138 // We now remove the contact
1139 contact_remove($contact["id"]);
1144 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1146 * @param string $author Author handle
1147 * @param string $guid Message guid
1148 * @param boolean $onlyfound Only return uri when found in the database
1150 * @return string The constructed uri or the one from our database
1152 private static function get_uri_from_guid($author, $guid, $onlyfound = false) {
1154 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1155 if (dbm::is_result($r)) {
1156 return $r[0]["uri"];
1157 } elseif (!$onlyfound) {
1158 return $author.":".$guid;
1165 * @brief Fetch the guid from our database with a given uri
1167 * @param string $author Author handle
1168 * @param string $uri Message uri
1170 * @return string The post guid
1172 private static function get_guid_from_uri($uri, $uid) {
1174 $r = q("SELECT `guid` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($uri), intval($uid));
1175 if (dbm::is_result($r))
1176 return $r[0]["guid"];
1182 * @brief Processes an incoming comment
1184 * @param array $importer Array of the importer user
1185 * @param string $sender The sender of the message
1186 * @param object $data The message object
1187 * @param string $xml The original XML of the message
1189 * @return int The message id of the generated comment or "false" if there was an error
1191 private function receive_comment($importer, $sender, $data, $xml) {
1192 $guid = notags(unxmlify($data->guid));
1193 $parent_guid = notags(unxmlify($data->parent_guid));
1194 $text = unxmlify($data->text);
1195 $author = notags(unxmlify($data->author));
1197 if (isset($data->created_at)) {
1198 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1200 $created_at = datetime_convert();
1203 if (isset($data->thread_parent_guid)) {
1204 $thread_parent_guid = notags(unxmlify($data->thread_parent_guid));
1205 $thr_uri = self::get_uri_from_guid("", $thread_parent_guid, true);
1210 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1215 $message_id = self::message_exists($importer["uid"], $guid);
1220 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1221 if (!$parent_item) {
1225 $person = self::person_by_handle($author);
1226 if (!is_array($person)) {
1227 logger("unable to find author details");
1231 // Fetch the contact id - if we know this contact
1232 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1234 $datarray = array();
1236 $datarray["uid"] = $importer["uid"];
1237 $datarray["contact-id"] = $author_contact["cid"];
1238 $datarray["network"] = $author_contact["network"];
1240 $datarray["author-name"] = $person["name"];
1241 $datarray["author-link"] = $person["url"];
1242 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1244 $datarray["owner-name"] = $contact["name"];
1245 $datarray["owner-link"] = $contact["url"];
1246 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1248 $datarray["guid"] = $guid;
1249 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1251 $datarray["type"] = "remote-comment";
1252 $datarray["verb"] = ACTIVITY_POST;
1253 $datarray["gravity"] = GRAVITY_COMMENT;
1255 if ($thr_uri != "") {
1256 $datarray["parent-uri"] = $thr_uri;
1258 $datarray["parent-uri"] = $parent_item["uri"];
1261 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1262 $datarray["object"] = $xml;
1264 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1266 $body = diaspora2bb($text);
1268 $datarray["body"] = self::replace_people_guid($body, $person["url"]);
1270 self::fetch_guid($datarray);
1272 $message_id = item_store($datarray);
1275 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1278 // If we are the origin of the parent we store the original data and notify our followers
1279 if($message_id AND $parent_item["origin"]) {
1281 // Formerly we stored the signed text, the signature and the author in different fields.
1282 // We now store the raw data so that we are more flexible.
1283 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1284 intval($message_id),
1285 dbesc(json_encode($data))
1289 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1296 * @brief processes and stores private messages
1298 * @param array $importer Array of the importer user
1299 * @param array $contact The contact of the message
1300 * @param object $data The message object
1301 * @param array $msg Array of the processed message, author handle and key
1302 * @param object $mesg The private message
1303 * @param array $conversation The conversation record to which this message belongs
1305 * @return bool "true" if it was successful
1307 private function receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation) {
1308 $guid = notags(unxmlify($data->guid));
1309 $subject = notags(unxmlify($data->subject));
1310 $author = notags(unxmlify($data->author));
1312 $msg_guid = notags(unxmlify($mesg->guid));
1313 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1314 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1315 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1316 $msg_text = unxmlify($mesg->text);
1317 $msg_created_at = datetime_convert("UTC", "UTC", notags(unxmlify($mesg->created_at)));
1319 // "diaspora_handle" is the element name from the old version
1320 // "author" is the element name from the new version
1321 if ($mesg->author) {
1322 $msg_author = notags(unxmlify($mesg->author));
1323 } elseif ($mesg->diaspora_handle) {
1324 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1329 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1331 if ($msg_conversation_guid != $guid) {
1332 logger("message conversation guid does not belong to the current conversation.");
1336 $body = diaspora2bb($msg_text);
1337 $message_uri = $msg_author.":".$msg_guid;
1339 $author_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1341 $author_signature = base64_decode($msg_author_signature);
1343 if (strcasecmp($msg_author,$msg["author"]) == 0) {
1347 $person = self::person_by_handle($msg_author);
1349 if (is_array($person) && x($person, "pubkey")) {
1350 $key = $person["pubkey"];
1352 logger("unable to find author details");
1357 if (!rsa_verify($author_signed_data, $author_signature, $key, "sha256")) {
1358 logger("verification failed.");
1362 if ($msg_parent_author_signature) {
1363 $owner_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1365 $parent_author_signature = base64_decode($msg_parent_author_signature);
1369 if (!rsa_verify($owner_signed_data, $parent_author_signature, $key, "sha256")) {
1370 logger("owner verification failed.");
1375 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' LIMIT 1",
1378 if (dbm::is_result($r)) {
1379 logger("duplicate message already delivered.", LOGGER_DEBUG);
1383 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1384 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1385 intval($importer["uid"]),
1387 intval($conversation["id"]),
1388 dbesc($person["name"]),
1389 dbesc($person["photo"]),
1390 dbesc($person["url"]),
1391 intval($contact["id"]),
1396 dbesc($message_uri),
1397 dbesc($author.":".$guid),
1398 dbesc($msg_created_at)
1401 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1402 dbesc(datetime_convert()),
1403 intval($conversation["id"])
1407 "type" => NOTIFY_MAIL,
1408 "notify_flags" => $importer["notify-flags"],
1409 "language" => $importer["language"],
1410 "to_name" => $importer["username"],
1411 "to_email" => $importer["email"],
1412 "uid" =>$importer["uid"],
1413 "item" => array("subject" => $subject, "body" => $body),
1414 "source_name" => $person["name"],
1415 "source_link" => $person["url"],
1416 "source_photo" => $person["thumb"],
1417 "verb" => ACTIVITY_POST,
1424 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1426 * @param array $importer Array of the importer user
1427 * @param array $msg Array of the processed message, author handle and key
1428 * @param object $data The message object
1430 * @return bool Success
1432 private function receive_conversation($importer, $msg, $data) {
1433 $guid = notags(unxmlify($data->guid));
1434 $subject = notags(unxmlify($data->subject));
1435 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1436 $author = notags(unxmlify($data->author));
1437 $participants = notags(unxmlify($data->participants));
1439 $messages = $data->message;
1441 if (!count($messages)) {
1442 logger("empty conversation");
1446 $contact = self::allowed_contact_by_handle($importer, $msg["author"], true);
1450 $conversation = null;
1452 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1453 intval($importer["uid"]),
1457 $conversation = $c[0];
1459 $r = q("INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1460 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1461 intval($importer["uid"]),
1465 dbesc(datetime_convert()),
1467 dbesc($participants)
1470 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1471 intval($importer["uid"]),
1476 $conversation = $c[0];
1478 if (!$conversation) {
1479 logger("unable to create conversation.");
1483 foreach($messages as $mesg)
1484 self::receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation);
1490 * @brief Creates the body for a "like" message
1492 * @param array $contact The contact that send us the "like"
1493 * @param array $parent_item The item array of the parent item
1494 * @param string $guid message guid
1496 * @return string the body
1498 private function construct_like_body($contact, $parent_item, $guid) {
1499 $bodyverb = t('%1$s likes %2$s\'s %3$s');
1501 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1502 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1503 $plink = "[url=".App::get_baseurl()."/display/".urlencode($guid)."]".t("status")."[/url]";
1505 return sprintf($bodyverb, $ulink, $alink, $plink);
1509 * @brief Creates a XML object for a "like"
1511 * @param array $importer Array of the importer user
1512 * @param array $parent_item The item array of the parent item
1514 * @return string The XML
1516 private function construct_like_object($importer, $parent_item) {
1517 $objtype = ACTIVITY_OBJ_NOTE;
1518 $link = '<link rel="alternate" type="text/html" href="'.App::get_baseurl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1519 $parent_body = $parent_item["body"];
1521 $xmldata = array("object" => array("type" => $objtype,
1523 "id" => $parent_item["uri"],
1526 "content" => $parent_body));
1528 return xml::from_array($xmldata, $xml, true);
1532 * @brief Processes "like" messages
1534 * @param array $importer Array of the importer user
1535 * @param string $sender The sender of the message
1536 * @param object $data The message object
1538 * @return int The message id of the generated like or "false" if there was an error
1540 private function receive_like($importer, $sender, $data) {
1541 $positive = notags(unxmlify($data->positive));
1542 $guid = notags(unxmlify($data->guid));
1543 $parent_type = notags(unxmlify($data->parent_type));
1544 $parent_guid = notags(unxmlify($data->parent_guid));
1545 $author = notags(unxmlify($data->author));
1547 // likes on comments aren't supported by Diaspora - only on posts
1548 // But maybe this will be supported in the future, so we will accept it.
1549 if (!in_array($parent_type, array("Post", "Comment")))
1552 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1556 $message_id = self::message_exists($importer["uid"], $guid);
1560 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1564 $person = self::person_by_handle($author);
1565 if (!is_array($person)) {
1566 logger("unable to find author details");
1570 // Fetch the contact id - if we know this contact
1571 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1573 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
1574 // We would accept this anyhow.
1575 if ($positive == "true")
1576 $verb = ACTIVITY_LIKE;
1578 $verb = ACTIVITY_DISLIKE;
1580 $datarray = array();
1582 $datarray["uid"] = $importer["uid"];
1583 $datarray["contact-id"] = $author_contact["cid"];
1584 $datarray["network"] = $author_contact["network"];
1586 $datarray["author-name"] = $person["name"];
1587 $datarray["author-link"] = $person["url"];
1588 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1590 $datarray["owner-name"] = $contact["name"];
1591 $datarray["owner-link"] = $contact["url"];
1592 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1594 $datarray["guid"] = $guid;
1595 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1597 $datarray["type"] = "activity";
1598 $datarray["verb"] = $verb;
1599 $datarray["gravity"] = GRAVITY_LIKE;
1600 $datarray["parent-uri"] = $parent_item["uri"];
1602 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
1603 $datarray["object"] = self::construct_like_object($importer, $parent_item);
1605 $datarray["body"] = self::construct_like_body($contact, $parent_item, $guid);
1607 $message_id = item_store($datarray);
1610 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1612 // If we are the origin of the parent we store the original data and notify our followers
1613 if($message_id AND $parent_item["origin"]) {
1615 // Formerly we stored the signed text, the signature and the author in different fields.
1616 // We now store the raw data so that we are more flexible.
1617 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1618 intval($message_id),
1619 dbesc(json_encode($data))
1623 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1630 * @brief Processes private messages
1632 * @param array $importer Array of the importer user
1633 * @param object $data The message object
1635 * @return bool Success?
1637 private function receive_message($importer, $data) {
1638 $guid = notags(unxmlify($data->guid));
1639 $parent_guid = notags(unxmlify($data->parent_guid));
1640 $text = unxmlify($data->text);
1641 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1642 $author = notags(unxmlify($data->author));
1643 $conversation_guid = notags(unxmlify($data->conversation_guid));
1645 $contact = self::allowed_contact_by_handle($importer, $author, true);
1650 $conversation = null;
1652 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1653 intval($importer["uid"]),
1654 dbesc($conversation_guid)
1657 $conversation = $c[0];
1659 logger("conversation not available.");
1663 $message_uri = $author.":".$guid;
1665 $person = self::person_by_handle($author);
1667 logger("unable to find author details");
1671 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1672 dbesc($message_uri),
1673 intval($importer["uid"])
1675 if (dbm::is_result($r)) {
1676 logger("duplicate message already delivered.", LOGGER_DEBUG);
1680 $body = diaspora2bb($text);
1682 $body = self::replace_people_guid($body, $person["url"]);
1684 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1685 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1686 intval($importer["uid"]),
1688 intval($conversation["id"]),
1689 dbesc($person["name"]),
1690 dbesc($person["photo"]),
1691 dbesc($person["url"]),
1692 intval($contact["id"]),
1693 dbesc($conversation["subject"]),
1697 dbesc($message_uri),
1698 dbesc($author.":".$parent_guid),
1702 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1703 dbesc(datetime_convert()),
1704 intval($conversation["id"])
1711 * @brief Processes participations - unsupported by now
1713 * @param array $importer Array of the importer user
1714 * @param object $data The message object
1716 * @return bool always true
1718 private function receive_participation($importer, $data) {
1719 // I'm not sure if we can fully support this message type
1724 * @brief Processes photos - unneeded
1726 * @param array $importer Array of the importer user
1727 * @param object $data The message object
1729 * @return bool always true
1731 private function receive_photo($importer, $data) {
1732 // There doesn't seem to be a reason for this function, since the photo data is transmitted in the status message as well
1737 * @brief Processes poll participations - unssupported
1739 * @param array $importer Array of the importer user
1740 * @param object $data The message object
1742 * @return bool always true
1744 private function receive_poll_participation($importer, $data) {
1745 // We don't support polls by now
1750 * @brief Processes incoming profile updates
1752 * @param array $importer Array of the importer user
1753 * @param object $data The message object
1755 * @return bool Success
1757 private function receive_profile($importer, $data) {
1758 $author = strtolower(notags(unxmlify($data->author)));
1760 $contact = self::contact_by_handle($importer["uid"], $author);
1764 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
1765 $image_url = unxmlify($data->image_url);
1766 $birthday = unxmlify($data->birthday);
1767 $location = diaspora2bb(unxmlify($data->location));
1768 $about = diaspora2bb(unxmlify($data->bio));
1769 $gender = unxmlify($data->gender);
1770 $searchable = (unxmlify($data->searchable) == "true");
1771 $nsfw = (unxmlify($data->nsfw) == "true");
1772 $tags = unxmlify($data->tag_string);
1774 $tags = explode("#", $tags);
1776 $keywords = array();
1777 foreach ($tags as $tag) {
1778 $tag = trim(strtolower($tag));
1783 $keywords = implode(", ", $keywords);
1785 $handle_parts = explode("@", $author);
1786 $nick = $handle_parts[0];
1789 $name = $handle_parts[0];
1791 if( preg_match("|^https?://|", $image_url) === 0)
1792 $image_url = "http://".$handle_parts[1].$image_url;
1794 update_contact_avatar($image_url, $importer["uid"], $contact["id"]);
1796 // Generic birthday. We don't know the timezone. The year is irrelevant.
1798 $birthday = str_replace("1000", "1901", $birthday);
1800 if ($birthday != "")
1801 $birthday = datetime_convert("UTC", "UTC", $birthday, "Y-m-d");
1803 // this is to prevent multiple birthday notifications in a single year
1804 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
1806 if(substr($birthday,5) === substr($contact["bd"],5))
1807 $birthday = $contact["bd"];
1809 $r = q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
1810 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
1814 dbesc(datetime_convert()),
1820 intval($contact["id"]),
1821 intval($importer["uid"])
1825 poco_check($contact["url"], $name, NETWORK_DIASPORA, $image_url, $about, $location, $gender, $keywords, "",
1826 datetime_convert(), 2, $contact["id"], $importer["uid"]);
1829 $gcontact = array("url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
1830 "photo" => $image_url, "name" => $name, "location" => $location,
1831 "about" => $about, "birthday" => $birthday, "gender" => $gender,
1832 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
1833 "hide" => !$searchable, "nsfw" => $nsfw);
1835 update_gcontact($gcontact);
1837 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
1843 * @brief Processes incoming friend requests
1845 * @param array $importer Array of the importer user
1846 * @param array $contact The contact that send the request
1848 private function receive_request_make_friend($importer, $contact) {
1852 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1853 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1854 intval(CONTACT_IS_FRIEND),
1855 intval($contact["id"]),
1856 intval($importer["uid"])
1859 // send notification
1861 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
1862 intval($importer["uid"])
1865 if($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(get_pconfig($importer["uid"], "system", "post_newfriend"))) {
1867 $self = q("SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
1868 intval($importer["uid"])
1871 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
1873 if($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
1876 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
1877 $arr["uid"] = $importer["uid"];
1878 $arr["contact-id"] = $self[0]["id"];
1880 $arr["type"] = 'wall';
1881 $arr["gravity"] = 0;
1883 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
1884 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
1885 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
1886 $arr["verb"] = ACTIVITY_FRIEND;
1887 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
1889 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
1890 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1891 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
1892 $arr["body"] = sprintf(t("%1$s is now friends with %2$s"), $A, $B)."\n\n\n".$Bphoto;
1894 $arr["object"] = self::construct_new_friend_object($contact);
1896 $arr["last-child"] = 1;
1898 $arr["allow_cid"] = $user[0]["allow_cid"];
1899 $arr["allow_gid"] = $user[0]["allow_gid"];
1900 $arr["deny_cid"] = $user[0]["deny_cid"];
1901 $arr["deny_gid"] = $user[0]["deny_gid"];
1903 $i = item_store($arr);
1905 proc_run(PRIORITY_HIGH, "include/notifier.php", "activity", $i);
1911 * @brief Creates a XML object for a "new friend" message
1913 * @param array $contact Array of the contact
1915 * @return string The XML
1917 private function construct_new_friend_object($contact) {
1918 $objtype = ACTIVITY_OBJ_PERSON;
1919 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
1920 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
1922 $xmldata = array("object" => array("type" => $objtype,
1923 "title" => $contact["name"],
1924 "id" => $contact["url"]."/".$contact["name"],
1927 return xml::from_array($xmldata, $xml, true);
1931 * @brief Processes incoming sharing notification
1933 * @param array $importer Array of the importer user
1934 * @param object $data The message object
1936 * @return bool Success
1938 private function receive_contact_request($importer, $data) {
1939 $author = unxmlify($data->author);
1940 $recipient = unxmlify($data->recipient);
1942 if (!$author || !$recipient) {
1946 // the current protocol version doesn't know these fields
1947 // That means that we will assume their existance
1948 if (isset($data->following)) {
1949 $following = (unxmlify($data->following) == "true");
1954 if (isset($data->sharing)) {
1955 $sharing = (unxmlify($data->sharing) == "true");
1960 $contact = self::contact_by_handle($importer["uid"],$author);
1962 // perhaps we were already sharing with this person. Now they're sharing with us.
1963 // That makes us friends.
1965 if ($following AND $sharing) {
1966 logger("Author ".$author." (Contact ".$contact["id"].") wants to have a bidirectional conection.", LOGGER_DEBUG);
1967 self::receive_request_make_friend($importer, $contact);
1969 // refetch the contact array
1970 $contact = self::contact_by_handle($importer["uid"],$author);
1972 // If we are now friends, we are sending a share message.
1973 // Normally we needn't to do so, but the first message could have been vanished.
1974 if (in_array($contact["rel"], array(CONTACT_IS_FRIEND, CONTACT_IS_FOLLOWER))) {
1975 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
1977 logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
1978 $ret = self::send_share($u[0], $contact);
1982 } else { /// @todo Handle all possible variations of adding and retracting of permissions
1983 logger("Author ".$author." (Contact ".$contact["id"].") wants to change the relationship: Following: ".$following." - sharing: ".$sharing. "(By now unsupported)", LOGGER_DEBUG);
1988 if (!$following AND $sharing AND in_array($importer["page-flags"], array(PAGE_SOAPBOX, PAGE_NORMAL))) {
1989 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
1991 } elseif (!$following AND !$sharing) {
1992 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
1994 } elseif (!$following AND $sharing) {
1995 logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
1996 } elseif ($following AND $sharing) {
1997 logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
1998 } elseif ($following AND !$sharing) {
1999 logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
2002 $ret = self::person_by_handle($author);
2004 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
2005 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
2009 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
2011 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
2012 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
2013 intval($importer["uid"]),
2014 dbesc($ret["network"]),
2015 dbesc($ret["addr"]),
2018 dbesc(normalise_link($ret["url"])),
2020 dbesc($ret["name"]),
2021 dbesc($ret["nick"]),
2022 dbesc($ret["photo"]),
2023 dbesc($ret["pubkey"]),
2024 dbesc($ret["notify"]),
2025 dbesc($ret["poll"]),
2030 // find the contact record we just created
2032 $contact_record = self::contact_by_handle($importer["uid"],$author);
2034 if (!$contact_record) {
2035 logger("unable to locate newly created contact record.");
2039 logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
2041 $def_gid = get_default_group($importer['uid'], $ret["network"]);
2043 if(intval($def_gid))
2044 group_add_member($importer["uid"], "", $contact_record["id"], $def_gid);
2046 update_contact_avatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
2048 if($importer["page-flags"] == PAGE_NORMAL) {
2050 logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
2052 $hash = random_string().(string)time(); // Generate a confirm_key
2054 $ret = q("INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
2055 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
2056 intval($importer["uid"]),
2057 intval($contact_record["id"]),
2060 dbesc(t("Sharing notification from Diaspora network")),
2062 dbesc(datetime_convert())
2066 // automatic friend approval
2068 logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
2070 update_contact_avatar($contact_record["photo"],$importer["uid"],$contact_record["id"]);
2072 // technically they are sharing with us (CONTACT_IS_SHARING),
2073 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
2074 // we are going to change the relationship and make them a follower.
2076 if (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing AND $following)
2077 $new_relation = CONTACT_IS_FRIEND;
2078 elseif (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing)
2079 $new_relation = CONTACT_IS_SHARING;
2081 $new_relation = CONTACT_IS_FOLLOWER;
2083 $r = q("UPDATE `contact` SET `rel` = %d,
2091 intval($new_relation),
2092 dbesc(datetime_convert()),
2093 dbesc(datetime_convert()),
2094 intval($contact_record["id"])
2097 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2099 logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2100 $ret = self::send_share($u[0], $contact_record);
2102 // Send the profile data, maybe it weren't transmitted before
2103 self::send_profile($importer["uid"], array($contact_record));
2111 * @brief Fetches a message with a given guid
2113 * @param string $guid message guid
2114 * @param string $orig_author handle of the original post
2115 * @param string $author handle of the sharer
2117 * @return array The fetched item
2119 private function original_item($guid, $orig_author, $author) {
2121 // Do we already have this item?
2122 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2123 `author-name`, `author-link`, `author-avatar`
2124 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2127 if (dbm::is_result($r)) {
2128 logger("reshared message ".$guid." already exists on system.");
2130 // Maybe it is already a reshared item?
2131 // Then refetch the content, if it is a reshare from a reshare.
2132 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2133 if (self::is_reshare($r[0]["body"], true)) {
2135 } elseif (self::is_reshare($r[0]["body"], false)) {
2136 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2138 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2140 // Add OEmbed and other information to the body
2141 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
2149 if (!dbm::is_result($r)) {
2150 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2151 logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2152 $item_id = self::store_by_guid($guid, $server);
2155 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2156 logger("2nd try: reshared message ".$guid." will be fetched without SLL from the server ".$server);
2157 $item_id = self::store_by_guid($guid, $server);
2161 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2162 `author-name`, `author-link`, `author-avatar`
2163 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2166 if (dbm::is_result($r)) {
2167 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2168 if (self::is_reshare($r[0]["body"], false)) {
2169 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2170 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2182 * @brief Processes a reshare message
2184 * @param array $importer Array of the importer user
2185 * @param object $data The message object
2186 * @param string $xml The original XML of the message
2188 * @return int the message id
2190 private function receive_reshare($importer, $data, $xml) {
2191 $root_author = notags(unxmlify($data->root_author));
2192 $root_guid = notags(unxmlify($data->root_guid));
2193 $guid = notags(unxmlify($data->guid));
2194 $author = notags(unxmlify($data->author));
2195 $public = notags(unxmlify($data->public));
2196 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2198 $contact = self::allowed_contact_by_handle($importer, $author, false);
2203 $message_id = self::message_exists($importer["uid"], $guid);
2208 $original_item = self::original_item($root_guid, $root_author, $author);
2209 if (!$original_item) {
2213 $orig_url = App::get_baseurl()."/display/".$original_item["guid"];
2215 $datarray = array();
2217 $datarray["uid"] = $importer["uid"];
2218 $datarray["contact-id"] = $contact["id"];
2219 $datarray["network"] = NETWORK_DIASPORA;
2221 $datarray["author-name"] = $contact["name"];
2222 $datarray["author-link"] = $contact["url"];
2223 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2225 $datarray["owner-name"] = $datarray["author-name"];
2226 $datarray["owner-link"] = $datarray["author-link"];
2227 $datarray["owner-avatar"] = $datarray["author-avatar"];
2229 $datarray["guid"] = $guid;
2230 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2232 $datarray["verb"] = ACTIVITY_POST;
2233 $datarray["gravity"] = GRAVITY_PARENT;
2235 $datarray["object"] = $xml;
2237 $prefix = share_header($original_item["author-name"], $original_item["author-link"], $original_item["author-avatar"],
2238 $original_item["guid"], $original_item["created"], $orig_url);
2239 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2241 $datarray["tag"] = $original_item["tag"];
2242 $datarray["app"] = $original_item["app"];
2244 $datarray["plink"] = self::plink($author, $guid);
2245 $datarray["private"] = (($public == "false") ? 1 : 0);
2246 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2248 $datarray["object-type"] = $original_item["object-type"];
2250 self::fetch_guid($datarray);
2251 $message_id = item_store($datarray);
2254 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2261 * @brief Processes retractions
2263 * @param array $importer Array of the importer user
2264 * @param array $contact The contact of the item owner
2265 * @param object $data The message object
2267 * @return bool success
2269 private function item_retraction($importer, $contact, $data) {
2270 $target_type = notags(unxmlify($data->target_type));
2271 $target_guid = notags(unxmlify($data->target_guid));
2272 $author = notags(unxmlify($data->author));
2274 $person = self::person_by_handle($author);
2275 if (!is_array($person)) {
2276 logger("unable to find author detail for ".$author);
2280 $r = q("SELECT `id`, `parent`, `parent-uri`, `author-link` FROM `item` WHERE `guid` = '%s' AND `uid` = %d AND NOT `file` LIKE '%%[%%' LIMIT 1",
2281 dbesc($target_guid),
2282 intval($importer["uid"])
2287 // Check if the sender is the thread owner
2288 $p = q("SELECT `id`, `author-link`, `origin` FROM `item` WHERE `id` = %d",
2289 intval($r[0]["parent"]));
2291 // Only delete it if the parent author really fits
2292 if (!link_compare($p[0]["author-link"], $contact["url"]) AND !link_compare($r[0]["author-link"], $contact["url"])) {
2293 logger("Thread author ".$p[0]["author-link"]." and item author ".$r[0]["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2297 // 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
2298 q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' WHERE `id` = %d",
2299 dbesc(datetime_convert()),
2300 dbesc(datetime_convert()),
2303 delete_thread($r[0]["id"], $r[0]["parent-uri"]);
2305 logger("Deleted target ".$target_guid." (".$r[0]["id"].") from user ".$importer["uid"]." parent: ".$p[0]["id"], LOGGER_DEBUG);
2307 // Now check if the retraction needs to be relayed by us
2308 if($p[0]["origin"]) {
2310 proc_run(PRIORITY_HIGH, "include/notifier.php", "drop", $r[0]["id"]);
2317 * @brief Receives retraction messages
2319 * @param array $importer Array of the importer user
2320 * @param string $sender The sender of the message
2321 * @param object $data The message object
2323 * @return bool Success
2325 private function receive_retraction($importer, $sender, $data) {
2326 $target_type = notags(unxmlify($data->target_type));
2328 $contact = self::contact_by_handle($importer["uid"], $sender);
2330 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2334 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2336 switch ($target_type) {
2339 case "Post": // "Post" will be supported in a future version
2341 case "StatusMessage":
2342 return self::item_retraction($importer, $contact, $data);;
2346 /// @todo What should we do with an "unshare"?
2347 // Removing the contact isn't correct since we still can read the public items
2348 contact_remove($contact["id"]);
2352 logger("Unknown target type ".$target_type);
2359 * @brief Receives status messages
2361 * @param array $importer Array of the importer user
2362 * @param object $data The message object
2363 * @param string $xml The original XML of the message
2365 * @return int The message id of the newly created item
2367 private function receive_status_message($importer, $data, $xml) {
2368 $raw_message = unxmlify($data->raw_message);
2369 $guid = notags(unxmlify($data->guid));
2370 $author = notags(unxmlify($data->author));
2371 $public = notags(unxmlify($data->public));
2372 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2373 $provider_display_name = notags(unxmlify($data->provider_display_name));
2375 /// @todo enable support for polls
2376 //if ($data->poll) {
2377 // foreach ($data->poll AS $poll)
2381 $contact = self::allowed_contact_by_handle($importer, $author, false);
2386 $message_id = self::message_exists($importer["uid"], $guid);
2392 if ($data->location) {
2393 foreach ($data->location->children() AS $fieldname => $data) {
2394 $address[$fieldname] = notags(unxmlify($data));
2398 $body = diaspora2bb($raw_message);
2400 $datarray = array();
2402 // Attach embedded pictures to the body
2404 foreach ($data->photo AS $photo) {
2405 $body = "[img]".unxmlify($photo->remote_photo_path).
2406 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2409 $datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
2411 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2413 // Add OEmbed and other information to the body
2414 if (!self::is_redmatrix($contact["url"])) {
2415 $body = add_page_info_to_body($body, false, true);
2419 $datarray["uid"] = $importer["uid"];
2420 $datarray["contact-id"] = $contact["id"];
2421 $datarray["network"] = NETWORK_DIASPORA;
2423 $datarray["author-name"] = $contact["name"];
2424 $datarray["author-link"] = $contact["url"];
2425 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2427 $datarray["owner-name"] = $datarray["author-name"];
2428 $datarray["owner-link"] = $datarray["author-link"];
2429 $datarray["owner-avatar"] = $datarray["author-avatar"];
2431 $datarray["guid"] = $guid;
2432 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2434 $datarray["verb"] = ACTIVITY_POST;
2435 $datarray["gravity"] = GRAVITY_PARENT;
2437 $datarray["object"] = $xml;
2439 $datarray["body"] = self::replace_people_guid($body, $contact["url"]);
2441 if ($provider_display_name != "") {
2442 $datarray["app"] = $provider_display_name;
2445 $datarray["plink"] = self::plink($author, $guid);
2446 $datarray["private"] = (($public == "false") ? 1 : 0);
2447 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2449 if (isset($address["address"])) {
2450 $datarray["location"] = $address["address"];
2453 if (isset($address["lat"]) AND isset($address["lng"])) {
2454 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2457 self::fetch_guid($datarray);
2458 $message_id = item_store($datarray);
2461 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2467 /* ************************************************************************************** *
2468 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2469 * ************************************************************************************** */
2472 * @brief returnes the handle of a contact
2474 * @param array $me contact array
2476 * @return string the handle in the format user@domain.tld
2478 private function my_handle($contact) {
2479 if ($contact["addr"] != "")
2480 return $contact["addr"];
2482 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2483 // So - just in case - we build the the address here.
2484 if ($contact["nickname"] != "")
2485 $nick = $contact["nickname"];
2487 $nick = $contact["nick"];
2489 return $nick."@".substr(App::get_baseurl(), strpos(App::get_baseurl(),"://") + 3);
2493 * @brief Creates the envelope for the "fetch" endpoint
2495 * @param string $msg The message that is to be transmitted
2496 * @param array $user The record of the sender
2498 * @return string The envelope
2501 public static function build_magic_envelope($msg, $user) {
2503 $b64url_data = base64url_encode($msg);
2504 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2506 $key_id = base64url_encode(self::my_handle($user));
2507 $type = "application/xml";
2508 $encoding = "base64url";
2509 $alg = "RSA-SHA256";
2510 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2511 $signature = rsa_sign($signable_data, $user["prvkey"]);
2512 $sig = base64url_encode($signature);
2514 $xmldata = array("me:env" => array("me:data" => $data,
2515 "@attributes" => array("type" => $type),
2516 "me:encoding" => $encoding,
2519 "@attributes2" => array("key_id" => $key_id)));
2521 $namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
2523 return xml::from_array($xmldata, $xml, false, $namespaces);
2527 * @brief Creates the envelope for a public message
2529 * @param string $msg The message that is to be transmitted
2530 * @param array $user The record of the sender
2531 * @param array $contact Target of the communication
2532 * @param string $prvkey The private key of the sender
2533 * @param string $pubkey The public key of the receiver
2535 * @return string The envelope
2537 private function build_public_message($msg, $user, $contact, $prvkey, $pubkey) {
2539 logger("Message: ".$msg, LOGGER_DATA);
2541 $handle = self::my_handle($user);
2543 $b64url_data = base64url_encode($msg);
2545 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2547 $type = "application/xml";
2548 $encoding = "base64url";
2549 $alg = "RSA-SHA256";
2551 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2553 $signature = rsa_sign($signable_data,$prvkey);
2554 $sig = base64url_encode($signature);
2556 $xmldata = array("diaspora" => array("header" => array("author_id" => $handle),
2557 "me:env" => array("me:encoding" => $encoding,
2560 "@attributes" => array("type" => $type),
2561 "me:sig" => $sig)));
2563 $namespaces = array("" => "https://joindiaspora.com/protocol",
2564 "me" => "http://salmon-protocol.org/ns/magic-env");
2566 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2568 logger("magic_env: ".$magic_env, LOGGER_DATA);
2573 * @brief Creates the envelope for a private message
2575 * @param string $msg The message that is to be transmitted
2576 * @param array $user The record of the sender
2577 * @param array $contact Target of the communication
2578 * @param string $prvkey The private key of the sender
2579 * @param string $pubkey The public key of the receiver
2581 * @return string The envelope
2583 private function build_private_message($msg, $user, $contact, $prvkey, $pubkey) {
2585 logger("Message: ".$msg, LOGGER_DATA);
2587 // without a public key nothing will work
2590 logger("pubkey missing: contact id: ".$contact["id"]);
2594 $inner_aes_key = random_string(32);
2595 $b_inner_aes_key = base64_encode($inner_aes_key);
2596 $inner_iv = random_string(16);
2597 $b_inner_iv = base64_encode($inner_iv);
2599 $outer_aes_key = random_string(32);
2600 $b_outer_aes_key = base64_encode($outer_aes_key);
2601 $outer_iv = random_string(16);
2602 $b_outer_iv = base64_encode($outer_iv);
2604 $handle = self::my_handle($user);
2606 $padded_data = pkcs5_pad($msg,16);
2607 $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
2609 $b64_data = base64_encode($inner_encrypted);
2612 $b64url_data = base64url_encode($b64_data);
2613 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2615 $type = "application/xml";
2616 $encoding = "base64url";
2617 $alg = "RSA-SHA256";
2619 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2621 $signature = rsa_sign($signable_data,$prvkey);
2622 $sig = base64url_encode($signature);
2624 $xmldata = array("decrypted_header" => array("iv" => $b_inner_iv,
2625 "aes_key" => $b_inner_aes_key,
2626 "author_id" => $handle));
2628 $decrypted_header = xml::from_array($xmldata, $xml, true);
2629 $decrypted_header = pkcs5_pad($decrypted_header,16);
2631 $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
2633 $outer_json = json_encode(array("iv" => $b_outer_iv, "key" => $b_outer_aes_key));
2635 $encrypted_outer_key_bundle = "";
2636 openssl_public_encrypt($outer_json, $encrypted_outer_key_bundle, $pubkey);
2638 $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
2640 logger("outer_bundle: ".$b64_encrypted_outer_key_bundle." key: ".$pubkey, LOGGER_DATA);
2642 $encrypted_header_json_object = json_encode(array("aes_key" => base64_encode($encrypted_outer_key_bundle),
2643 "ciphertext" => base64_encode($ciphertext)));
2644 $cipher_json = base64_encode($encrypted_header_json_object);
2646 $xmldata = array("diaspora" => array("encrypted_header" => $cipher_json,
2647 "me:env" => array("me:encoding" => $encoding,
2650 "@attributes" => array("type" => $type),
2651 "me:sig" => $sig)));
2653 $namespaces = array("" => "https://joindiaspora.com/protocol",
2654 "me" => "http://salmon-protocol.org/ns/magic-env");
2656 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2658 logger("magic_env: ".$magic_env, LOGGER_DATA);
2663 * @brief Create the envelope for a message
2665 * @param string $msg The message that is to be transmitted
2666 * @param array $user The record of the sender
2667 * @param array $contact Target of the communication
2668 * @param string $prvkey The private key of the sender
2669 * @param string $pubkey The public key of the receiver
2670 * @param bool $public Is the message public?
2672 * @return string The message that will be transmitted to other servers
2674 private function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
2677 $magic_env = self::build_public_message($msg,$user,$contact,$prvkey,$pubkey);
2679 $magic_env = self::build_private_message($msg,$user,$contact,$prvkey,$pubkey);
2681 // The data that will be transmitted is double encoded via "urlencode", strange ...
2682 $slap = "xml=".urlencode(urlencode($magic_env));
2687 * @brief Creates a signature for a message
2689 * @param array $owner the array of the owner of the message
2690 * @param array $message The message that is to be signed
2692 * @return string The signature
2694 private function signature($owner, $message) {
2696 unset($sigmsg["author_signature"]);
2697 unset($sigmsg["parent_author_signature"]);
2699 $signed_text = implode(";", $sigmsg);
2701 return base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
2705 * @brief Transmit a message to a target server
2707 * @param array $owner the array of the item owner
2708 * @param array $contact Target of the communication
2709 * @param string $slap The message that is to be transmitted
2710 * @param bool $public_batch Is it a public post?
2711 * @param bool $queue_run Is the transmission called from the queue?
2712 * @param string $guid message guid
2714 * @return int Result of the transmission
2716 public static function transmit($owner, $contact, $slap, $public_batch, $queue_run=false, $guid = "") {
2720 $enabled = intval(get_config("system", "diaspora_enabled"));
2724 $logid = random_string(4);
2725 $dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
2727 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
2731 logger("transmit: ".$logid."-".$guid." ".$dest_url);
2733 if (!$queue_run && was_recently_delayed($contact["id"])) {
2736 if (!intval(get_config("system", "diaspora_test"))) {
2737 post_url($dest_url."/", $slap);
2738 $return_code = $a->get_curl_code();
2740 logger("test_mode");
2745 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
2747 if (!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
2748 logger("queue message");
2750 $r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
2751 intval($contact["id"]),
2752 dbesc(NETWORK_DIASPORA),
2754 intval($public_batch)
2757 logger("add_to_queue ignored - identical item already in queue");
2759 // queue message for redelivery
2760 add_to_queue($contact["id"], NETWORK_DIASPORA, $slap, $public_batch);
2762 // The message could not be delivered. We mark the contact as "dead"
2763 mark_for_death($contact);
2765 } elseif (($return_code >= 200) AND ($return_code <= 299)) {
2766 // We successfully delivered a message, the contact is alive
2767 unmark_for_death($contact);
2770 return(($return_code) ? $return_code : (-1));
2775 * @brief Build the post xml
2777 * @param string $type The message type
2778 * @param array $message The message data
2780 * @return string The post XML
2782 public static function build_post_xml($type, $message) {
2784 $data = array("XML" => array("post" => array($type => $message)));
2785 return xml::from_array($data, $xml);
2789 * @brief Builds and transmit messages
2791 * @param array $owner the array of the item owner
2792 * @param array $contact Target of the communication
2793 * @param string $type The message type
2794 * @param array $message The message data
2795 * @param bool $public_batch Is it a public post?
2796 * @param string $guid message guid
2797 * @param bool $spool Should the transmission be spooled or transmitted?
2799 * @return int Result of the transmission
2801 private function build_and_transmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false) {
2803 $msg = self::build_post_xml($type, $message);
2805 logger('message: '.$msg, LOGGER_DATA);
2806 logger('send guid '.$guid, LOGGER_DEBUG);
2808 // Fallback if the private key wasn't transmitted in the expected field
2809 if ($owner['uprvkey'] == "")
2810 $owner['uprvkey'] = $owner['prvkey'];
2812 $slap = self::build_message($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
2815 add_to_queue($contact['id'], NETWORK_DIASPORA, $slap, $public_batch);
2818 $return_code = self::transmit($owner, $contact, $slap, $public_batch, false, $guid);
2820 logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
2822 return $return_code;
2826 * @brief Sends a "share" message
2828 * @param array $owner the array of the item owner
2829 * @param array $contact Target of the communication
2831 * @return int The result of the transmission
2833 public static function send_share($owner,$contact) {
2835 $message = array("sender_handle" => self::my_handle($owner),
2836 "recipient_handle" => $contact["addr"]);
2838 logger("Send share ".print_r($message, true), LOGGER_DEBUG);
2840 return self::build_and_transmit($owner, $contact, "request", $message);
2844 * @brief sends an "unshare"
2846 * @param array $owner the array of the item owner
2847 * @param array $contact Target of the communication
2849 * @return int The result of the transmission
2851 public static function send_unshare($owner,$contact) {
2853 $message = array("post_guid" => $owner["guid"],
2854 "diaspora_handle" => self::my_handle($owner),
2855 "type" => "Person");
2857 logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
2859 return self::build_and_transmit($owner, $contact, "retraction", $message);
2863 * @brief Checks a message body if it is a reshare
2865 * @param string $body The message body that is to be check
2866 * @param bool $complete Should it be a complete check or a simple check?
2868 * @return array|bool Reshare details or "false" if no reshare
2870 public static function is_reshare($body, $complete = true) {
2871 $body = trim($body);
2873 // Skip if it isn't a pure repeated messages
2874 // Does it start with a share?
2875 if ((strpos($body, "[share") > 0) AND $complete)
2878 // Does it end with a share?
2879 if (strlen($body) > (strrpos($body, "[/share]") + 8))
2882 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2883 // Skip if there is no shared message in there
2884 if ($body == $attributes)
2887 // If we don't do the complete check we quit here
2892 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2893 if ($matches[1] != "")
2894 $guid = $matches[1];
2896 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2897 if ($matches[1] != "")
2898 $guid = $matches[1];
2901 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2902 dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2905 $ret["root_handle"] = self::handle_from_contact($r[0]["contact-id"]);
2906 $ret["root_guid"] = $guid;
2912 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2913 if ($matches[1] != "")
2914 $profile = $matches[1];
2916 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2917 if ($matches[1] != "")
2918 $profile = $matches[1];
2922 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2923 if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2927 preg_match("/link='(.*?)'/ism", $attributes, $matches);
2928 if ($matches[1] != "")
2929 $link = $matches[1];
2931 preg_match('/link="(.*?)"/ism', $attributes, $matches);
2932 if ($matches[1] != "")
2933 $link = $matches[1];
2935 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2936 if (($ret["root_guid"] == $link) OR (trim($ret["root_guid"]) == ""))
2943 * @brief Create a post (status message or reshare)
2945 * @param array $item The item that will be exported
2946 * @param array $owner the array of the item owner
2949 * 'type' -> Message type ("status_message" or "reshare")
2950 * 'message' -> Array of XML elements of the status
2952 public static function build_status($item, $owner) {
2954 $myaddr = self::my_handle($owner);
2956 $public = (($item["private"]) ? "false" : "true");
2958 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
2960 // Detect a share element and do a reshare
2961 if (!$item['private'] AND ($ret = self::is_reshare($item["body"]))) {
2962 $message = array("root_diaspora_id" => $ret["root_handle"],
2963 "root_guid" => $ret["root_guid"],
2964 "guid" => $item["guid"],
2965 "diaspora_handle" => $myaddr,
2966 "public" => $public,
2967 "created_at" => $created,
2968 "provider_display_name" => $item["app"]);
2972 $title = $item["title"];
2973 $body = $item["body"];
2975 // convert to markdown
2976 $body = html_entity_decode(bb2diaspora($body));
2980 $body = "## ".html_entity_decode($title)."\n\n".$body;
2982 if ($item["attach"]) {
2983 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
2985 $body .= "\n".t("Attachments:")."\n";
2986 foreach($matches as $mtch)
2987 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
2991 $location = array();
2993 if ($item["location"] != "")
2994 $location["address"] = $item["location"];
2996 if ($item["coord"] != "") {
2997 $coord = explode(" ", $item["coord"]);
2998 $location["lat"] = $coord[0];
2999 $location["lng"] = $coord[1];
3002 $message = array("raw_message" => $body,
3003 "location" => $location,
3004 "guid" => $item["guid"],
3005 "diaspora_handle" => $myaddr,
3006 "public" => $public,
3007 "created_at" => $created,
3008 "provider_display_name" => $item["app"]);
3010 // Diaspora rejects messages when they contain a location without "lat" or "lng"
3011 if (!isset($location["lat"]) OR !isset($location["lng"])) {
3012 unset($message["location"]);
3015 $type = "status_message";
3017 return array("type" => $type, "message" => $message);
3021 * @brief Sends a post
3023 * @param array $item The item that will be exported
3024 * @param array $owner the array of the item owner
3025 * @param array $contact Target of the communication
3026 * @param bool $public_batch Is it a public post?
3028 * @return int The result of the transmission
3030 public static function send_status($item, $owner, $contact, $public_batch = false) {
3032 $status = self::build_status($item, $owner);
3034 return self::build_and_transmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
3038 * @brief Creates a "like" object
3040 * @param array $item The item that will be exported
3041 * @param array $owner the array of the item owner
3043 * @return array The data for a "like"
3045 private function construct_like($item, $owner) {
3047 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3048 dbesc($item["thr-parent"]));
3049 if (!dbm::is_result($p))
3054 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3057 return(array("positive" => $positive,
3058 "guid" => $item["guid"],
3059 "target_type" => $target_type,
3060 "parent_guid" => $parent["guid"],
3061 "author_signature" => "",
3062 "diaspora_handle" => self::my_handle($owner)));
3066 * @brief Creates the object for a comment
3068 * @param array $item The item that will be exported
3069 * @param array $owner the array of the item owner
3071 * @return array The data for a comment
3073 private function construct_comment($item, $owner) {
3075 $p = q("SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
3076 intval($item["parent"]),
3077 intval($item["parent"])
3080 if (!dbm::is_result($p))
3085 $text = html_entity_decode(bb2diaspora($item["body"]));
3086 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3088 $comment = array("guid" => $item["guid"],
3089 "parent_guid" => $parent["guid"],
3090 "author_signature" => "",
3092 /// @todo Currently disabled until Diaspora supports it: "created_at" => $created,
3093 "diaspora_handle" => self::my_handle($owner));
3095 // Send the thread parent guid only if it is a threaded comment
3096 if ($item['thr-parent'] != $item['parent-uri']) {
3097 $comment['thread_parent_guid'] = self::get_guid_from_uri($item['thr-parent'], $item['uid']);
3103 * @brief Send a like or a comment
3105 * @param array $item The item that will be exported
3106 * @param array $owner the array of the item owner
3107 * @param array $contact Target of the communication
3108 * @param bool $public_batch Is it a public post?
3110 * @return int The result of the transmission
3112 public static function send_followup($item,$owner,$contact,$public_batch = false) {
3114 if($item['verb'] === ACTIVITY_LIKE) {
3115 $message = self::construct_like($item, $owner);
3118 $message = self::construct_comment($item, $owner);
3125 $message["author_signature"] = self::signature($owner, $message);
3127 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3131 * @brief Creates a message from a signature record entry
3133 * @param array $item The item that will be exported
3134 * @param array $signature The entry of the "sign" record
3136 * @return string The message
3138 private function message_from_signature($item, $signature) {
3140 // Split the signed text
3141 $signed_parts = explode(";", $signature['signed_text']);
3143 if ($item["deleted"])
3144 $message = array("parent_author_signature" => "",
3145 "target_guid" => $signed_parts[0],
3146 "target_type" => $signed_parts[1],
3147 "sender_handle" => $signature['signer'],
3148 "target_author_signature" => $signature['signature']);
3149 elseif ($item['verb'] === ACTIVITY_LIKE)
3150 $message = array("positive" => $signed_parts[0],
3151 "guid" => $signed_parts[1],
3152 "target_type" => $signed_parts[2],
3153 "parent_guid" => $signed_parts[3],
3154 "parent_author_signature" => "",
3155 "author_signature" => $signature['signature'],
3156 "diaspora_handle" => $signed_parts[4]);
3158 // Remove the comment guid
3159 $guid = array_shift($signed_parts);
3161 // Remove the parent guid
3162 $parent_guid = array_shift($signed_parts);
3164 // Remove the handle
3165 $handle = array_pop($signed_parts);
3167 // Glue the parts together
3168 $text = implode(";", $signed_parts);
3170 $message = array("guid" => $guid,
3171 "parent_guid" => $parent_guid,
3172 "parent_author_signature" => "",
3173 "author_signature" => $signature['signature'],
3174 "text" => implode(";", $signed_parts),
3175 "diaspora_handle" => $handle);
3181 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
3183 * @param array $item The item that will be exported
3184 * @param array $owner the array of the item owner
3185 * @param array $contact Target of the communication
3186 * @param bool $public_batch Is it a public post?
3188 * @return int The result of the transmission
3190 public static function send_relay($item, $owner, $contact, $public_batch = false) {
3192 if ($item["deleted"])
3193 return self::send_retraction($item, $owner, $contact, $public_batch, true);
3194 elseif ($item['verb'] === ACTIVITY_LIKE)
3199 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3201 // fetch the original signature
3203 $r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3204 intval($item["id"]));
3207 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3213 // Old way - is used by the internal Friendica functions
3214 /// @todo Change all signatur storing functions to the new format
3215 if ($signature['signed_text'] AND $signature['signature'] AND $signature['signer'])
3216 $message = self::message_from_signature($item, $signature);
3218 $msg = json_decode($signature['signed_text'], true);
3221 if (is_array($msg)) {
3222 foreach ($msg AS $field => $data) {
3223 if (!$item["deleted"]) {
3224 if ($field == "author")
3225 $field = "diaspora_handle";
3226 if ($field == "parent_type")
3227 $field = "target_type";
3230 $message[$field] = $data;
3233 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3236 $message["parent_author_signature"] = self::signature($owner, $message);
3238 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3240 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3244 * @brief Sends a retraction (deletion) of a message, like or comment
3246 * @param array $item The item that will be exported
3247 * @param array $owner the array of the item owner
3248 * @param array $contact Target of the communication
3249 * @param bool $public_batch Is it a public post?
3250 * @param bool $relay Is the retraction transmitted from a relay?
3252 * @return int The result of the transmission
3254 public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
3256 $itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
3258 // Check whether the retraction is for a top-level post or whether it's a relayable
3259 if ($item["uri"] !== $item["parent-uri"]) {
3260 $msg_type = "relayable_retraction";
3261 $target_type = (($item["verb"] === ACTIVITY_LIKE) ? "Like" : "Comment");
3263 $msg_type = "signed_retraction";
3264 $target_type = "StatusMessage";
3267 if ($relay AND ($item["uri"] !== $item["parent-uri"]))
3268 $signature = "parent_author_signature";
3270 $signature = "target_author_signature";
3272 $signed_text = $item["guid"].";".$target_type;
3274 $message = array("target_guid" => $item['guid'],
3275 "target_type" => $target_type,
3276 "sender_handle" => $itemaddr,
3277 $signature => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
3279 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
3281 return self::build_and_transmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
3285 * @brief Sends a mail
3287 * @param array $item The item that will be exported
3288 * @param array $owner The owner
3289 * @param array $contact Target of the communication
3291 * @return int The result of the transmission
3293 public static function send_mail($item, $owner, $contact) {
3295 $myaddr = self::my_handle($owner);
3297 $r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3298 intval($item["convid"]),
3299 intval($item["uid"])
3302 if (!dbm::is_result($r)) {
3303 logger("conversation not found.");
3309 "guid" => $cnv["guid"],
3310 "subject" => $cnv["subject"],
3311 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d\TH:i:s\Z'),
3312 "diaspora_handle" => $cnv["creator"],
3313 "participant_handles" => $cnv["recips"]
3316 $body = bb2diaspora($item["body"]);
3317 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3319 $signed_text = $item["guid"].";".$cnv["guid"].";".$body.";".$created.";".$myaddr.";".$cnv['guid'];
3320 $sig = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
3323 "guid" => $item["guid"],
3324 "parent_guid" => $cnv["guid"],
3325 "parent_author_signature" => $sig,
3326 "author_signature" => $sig,
3328 "created_at" => $created,
3329 "diaspora_handle" => $myaddr,
3330 "conversation_guid" => $cnv["guid"]
3333 if ($item["reply"]) {
3337 $message = array("guid" => $cnv["guid"],
3338 "subject" => $cnv["subject"],
3339 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d\TH:i:s\Z'),
3341 "diaspora_handle" => $cnv["creator"],
3342 "participant_handles" => $cnv["recips"]);
3344 $type = "conversation";
3347 return self::build_and_transmit($owner, $contact, $type, $message, false, $item["guid"]);
3351 * @brief Sends profile data
3353 * @param int $uid The user id
3355 public static function send_profile($uid, $recips = false) {
3361 $recips = q("SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
3362 AND `uid` = %d AND `rel` != %d",
3363 dbesc(NETWORK_DIASPORA),
3365 intval(CONTACT_IS_SHARING)
3370 $r = q("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
3372 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
3373 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
3374 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
3383 $handle = $profile["addr"];
3384 $first = ((strpos($profile['name'],' ')
3385 ? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']));
3386 $last = (($first === $profile['name']) ? '' : trim(substr($profile['name'], strlen($first))));
3387 $large = App::get_baseurl().'/photo/custom/300/'.$profile['uid'].'.jpg';
3388 $medium = App::get_baseurl().'/photo/custom/100/'.$profile['uid'].'.jpg';
3389 $small = App::get_baseurl().'/photo/custom/50/' .$profile['uid'].'.jpg';
3390 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
3392 if ($searchable === 'true') {
3393 $dob = '1000-00-00';
3395 if (($profile['dob']) && ($profile['dob'] != '0000-00-00'))
3396 $dob = ((intval($profile['dob'])) ? intval($profile['dob']) : '1000') .'-'. datetime_convert('UTC','UTC',$profile['dob'],'m-d');
3398 $about = $profile['about'];
3399 $about = strip_tags(bbcode($about));
3401 $location = formatted_location($profile);
3403 if ($profile['pub_keywords']) {
3404 $kw = str_replace(',',' ',$profile['pub_keywords']);
3405 $kw = str_replace(' ',' ',$kw);
3406 $arr = explode(' ',$profile['pub_keywords']);
3408 for($x = 0; $x < 5; $x ++) {
3410 $tags .= '#'. trim($arr[$x]) .' ';
3414 $tags = trim($tags);
3417 $message = array("diaspora_handle" => $handle,
3418 "first_name" => $first,
3419 "last_name" => $last,
3420 "image_url" => $large,
3421 "image_url_medium" => $medium,
3422 "image_url_small" => $small,
3424 "gender" => $profile['gender'],
3426 "location" => $location,
3427 "searchable" => $searchable,
3428 "tag_string" => $tags);
3430 foreach($recips as $recip) {
3431 logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
3432 self::build_and_transmit($profile, $recip, "profile", $message, false, "", true);
3437 * @brief Stores the signature for likes that are created on our system
3439 * @param array $contact The contact array of the "like"
3440 * @param int $post_id The post id of the "like"
3442 * @return bool Success
3444 public static function store_like_signature($contact, $post_id) {
3446 // Is the contact the owner? Then fetch the private key
3447 if (!$contact['self'] OR ($contact['uid'] == 0)) {
3448 logger("No owner post, so not storing signature", LOGGER_DEBUG);
3452 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
3456 $contact["uprvkey"] = $r[0]['prvkey'];
3458 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
3462 if (!in_array($r[0]["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE)))
3465 $message = self::construct_like($r[0], $contact);
3466 $message["author_signature"] = self::signature($contact, $message);
3468 // In the future we will store the signature more flexible to support new fields.
3469 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3470 // (We are transmitting this data here via DFRN)
3472 $signed_text = $message["positive"].";".$message["guid"].";".$message["target_type"].";".
3473 $message["parent_guid"].";".$message["diaspora_handle"];
3475 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3477 dbesc($signed_text),
3478 dbesc($message["author_signature"]),
3479 dbesc($message["diaspora_handle"])
3482 // This here will replace the lines above, once Diaspora changed its protocol
3483 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3484 // intval($message_id),
3485 // dbesc(json_encode($message))
3488 logger('Stored diaspora like signature');
3493 * @brief Stores the signature for comments that are created on our system
3495 * @param array $item The item array of the comment
3496 * @param array $contact The contact array of the item owner
3497 * @param string $uprvkey The private key of the sender
3498 * @param int $message_id The message id of the comment
3500 * @return bool Success
3502 public static function store_comment_signature($item, $contact, $uprvkey, $message_id) {
3504 if ($uprvkey == "") {
3505 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
3509 $contact["uprvkey"] = $uprvkey;
3511 $message = self::construct_comment($item, $contact);
3512 $message["author_signature"] = self::signature($contact, $message);
3514 // In the future we will store the signature more flexible to support new fields.
3515 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3516 // (We are transmitting this data here via DFRN)
3517 $signed_text = $message["guid"].";".$message["parent_guid"].";".
3518 $message["text"].";".$message["diaspora_handle"];
3520 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3521 intval($message_id),
3522 dbesc($signed_text),
3523 dbesc($message["author_signature"]),
3524 dbesc($message["diaspora_handle"])
3527 // This here will replace the lines above, once Diaspora changed its protocol
3528 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3529 // intval($message_id),
3530 // dbesc(json_encode($message))
3533 logger('Stored diaspora comment signature');