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"])
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 $r = q("SELECT `url` FROM `fcontact` WHERE `guid` = '%s' AND `network` = '" . NETWORK_DIASPORA . "' AND `url` != ''",
720 if (dbm::is_result($r)) {
728 * @brief Get a contact id for a given handle
730 * @param int $uid The user id
731 * @param string $handle The handle in the format user@domain.tld
733 * @return The contact id
735 private function contact_by_handle($uid, $handle) {
736 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
744 $handle_parts = explode("@", $handle);
745 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
746 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
758 * @brief Check if posting is allowed for this contact
760 * @param array $importer Array of the importer user
761 * @param array $contact The contact that is checked
762 * @param bool $is_comment Is the check for a comment?
764 * @return bool is the contact allowed to post?
766 private function post_allow($importer, $contact, $is_comment = false) {
768 // perhaps we were already sharing with this person. Now they're sharing with us.
769 // That makes us friends.
770 // Normally this should have handled by getting a request - but this could get lost
771 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
772 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
773 intval(CONTACT_IS_FRIEND),
774 intval($contact["id"]),
775 intval($importer["uid"])
777 $contact["rel"] = CONTACT_IS_FRIEND;
778 logger("defining user ".$contact["nick"]." as friend");
781 if(($contact["blocked"]) || ($contact["readonly"]) || ($contact["archive"]))
783 if($contact["rel"] == CONTACT_IS_SHARING || $contact["rel"] == CONTACT_IS_FRIEND)
785 if($contact["rel"] == CONTACT_IS_FOLLOWER)
786 if(($importer["page-flags"] == PAGE_COMMUNITY) OR $is_comment)
789 // Messages for the global users are always accepted
790 if ($importer["uid"] == 0)
797 * @brief Fetches the contact id for a handle and checks if posting is allowed
799 * @param array $importer Array of the importer user
800 * @param string $handle The checked handle in the format user@domain.tld
801 * @param bool $is_comment Is the check for a comment?
803 * @return array The contact data
805 private function allowed_contact_by_handle($importer, $handle, $is_comment = false) {
806 $contact = self::contact_by_handle($importer["uid"], $handle);
808 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
812 if (!self::post_allow($importer, $contact, $is_comment)) {
813 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
820 * @brief Does the message already exists on the system?
822 * @param int $uid The user id
823 * @param string $guid The guid of the message
825 * @return int|bool message id if the message already was stored into the system - or false.
827 private function message_exists($uid, $guid) {
828 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
834 logger("message ".$guid." already exists for user ".$uid);
842 * @brief Checks for links to posts in a message
844 * @param array $item The item array
846 private function fetch_guid($item) {
847 preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
848 function ($match) use ($item){
849 return(self::fetch_guid_sub($match, $item));
854 * @brief Checks for relative /people/* links in an item body to match local
855 * contacts or prepends the remote host taken from the author link.
857 * @param string $body The item body to replace links from
858 * @param string $author_link The author link for missing local contact fallback
860 * @return the replaced string
862 public function replace_people_guid($body, $author_link) {
863 $return = preg_replace_callback("&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
864 function ($match) use ($author_link) {
866 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
867 // 1 => '0123456789abcdef'
869 $handle = self::url_from_contact_guid($match[1]);
872 $return = '@[url='.$handle.']'.$match[2].'[/url]';
874 // No local match, restoring absolute remote URL from author scheme and host
875 $author_url = parse_url($author_link);
876 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
886 * @brief sub function of "fetch_guid" which checks for links in messages
888 * @param array $match array containing a link that has to be checked for a message link
889 * @param array $item The item array
891 private function fetch_guid_sub($match, $item) {
892 if (!self::store_by_guid($match[1], $item["author-link"]))
893 self::store_by_guid($match[1], $item["owner-link"]);
897 * @brief Fetches an item with a given guid from a given server
899 * @param string $guid the message guid
900 * @param string $server The server address
901 * @param int $uid The user id of the user
903 * @return int the message id of the stored message or false
905 private function store_by_guid($guid, $server, $uid = 0) {
906 $serverparts = parse_url($server);
907 $server = $serverparts["scheme"]."://".$serverparts["host"];
909 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
911 $msg = self::message($guid, $server);
916 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
918 // Now call the dispatcher
919 return self::dispatch_public($msg);
923 * @brief Fetches a message from a server
925 * @param string $guid message guid
926 * @param string $server The url of the server
927 * @param int $level Endless loop prevention
930 * 'message' => The message XML
931 * 'author' => The author handle
932 * 'key' => The public key of the author
934 private function message($guid, $server, $level = 0) {
939 // This will work for new Diaspora servers and Friendica servers from 3.5
940 $source_url = $server."/fetch/post/".$guid;
941 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
943 $envelope = fetch_url($source_url);
945 logger("Envelope was fetched.", LOGGER_DEBUG);
946 $x = self::verify_magic_envelope($envelope);
948 logger("Envelope could not be verified.", LOGGER_DEBUG);
950 logger("Envelope was verified.", LOGGER_DEBUG);
954 // This will work for older Diaspora and Friendica servers
956 $source_url = $server."/p/".$guid.".xml";
957 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
959 $x = fetch_url($source_url);
964 $source_xml = parse_xml_string($x, false);
966 if (!is_object($source_xml))
969 if ($source_xml->post->reshare) {
970 // Reshare of a reshare - old Diaspora version
971 logger("Message is a reshare", LOGGER_DEBUG);
972 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
973 } elseif ($source_xml->getName() == "reshare") {
974 // Reshare of a reshare - new Diaspora version
975 logger("Message is a new reshare", LOGGER_DEBUG);
976 return self::message($source_xml->root_guid, $server, ++$level);
981 // Fetch the author - for the old and the new Diaspora version
982 if ($source_xml->post->status_message->diaspora_handle)
983 $author = (string)$source_xml->post->status_message->diaspora_handle;
984 elseif ($source_xml->author AND ($source_xml->getName() == "status_message"))
985 $author = (string)$source_xml->author;
987 // If this isn't a "status_message" then quit
989 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
993 $msg = array("message" => $x, "author" => $author);
995 $msg["key"] = self::key($msg["author"]);
1001 * @brief Fetches the item record of a given guid
1003 * @param int $uid The user id
1004 * @param string $guid message guid
1005 * @param string $author The handle of the item
1006 * @param array $contact The contact of the item owner
1008 * @return array the item record
1010 private function parent_item($uid, $guid, $author, $contact) {
1011 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1012 `author-name`, `author-link`, `author-avatar`,
1013 `owner-name`, `owner-link`, `owner-avatar`
1014 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1015 intval($uid), dbesc($guid));
1018 $result = self::store_by_guid($guid, $contact["url"], $uid);
1021 $person = self::person_by_handle($author);
1022 $result = self::store_by_guid($guid, $person["url"], $uid);
1026 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
1028 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1029 `author-name`, `author-link`, `author-avatar`,
1030 `owner-name`, `owner-link`, `owner-avatar`
1031 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1032 intval($uid), dbesc($guid));
1037 logger("parent item not found: parent: ".$guid." - user: ".$uid);
1040 logger("parent item found: parent: ".$guid." - user: ".$uid);
1046 * @brief returns contact details
1048 * @param array $contact The default contact if the person isn't found
1049 * @param array $person The record of the person
1050 * @param int $uid The user id
1053 * 'cid' => contact id
1054 * 'network' => network type
1056 private function author_contact_by_url($contact, $person, $uid) {
1058 $r = q("SELECT `id`, `network`, `url` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
1059 dbesc(normalise_link($person["url"])), intval($uid));
1062 $network = $r[0]["network"];
1064 // We are receiving content from a user that is about to be terminated
1065 // This means the user is vital, so we remove a possible termination date.
1066 unmark_for_death($contact);
1068 $cid = $contact["id"];
1069 $network = NETWORK_DIASPORA;
1072 return array("cid" => $cid, "network" => $network);
1076 * @brief Is the profile a hubzilla profile?
1078 * @param string $url The profile link
1080 * @return bool is it a hubzilla server?
1082 public static function is_redmatrix($url) {
1083 return(strstr($url, "/channel/"));
1087 * @brief Generate a post link with a given handle and message guid
1089 * @param string $addr The user handle
1090 * @param string $guid message guid
1092 * @return string the post link
1094 private function plink($addr, $guid) {
1095 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
1099 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1101 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
1102 // So we try another way as well.
1103 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
1105 $r[0]["network"] = $s[0]["network"];
1107 if ($r[0]["network"] == NETWORK_DFRN)
1108 return(str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/"));
1110 if (self::is_redmatrix($r[0]["url"]))
1111 return $r[0]["url"]."/?f=&mid=".$guid;
1113 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1117 * @brief Processes an account deletion
1119 * @param array $importer Array of the importer user
1120 * @param object $data The message object
1122 * @return bool Success
1124 private function receive_account_deletion($importer, $data) {
1126 /// @todo Account deletion should remove the contact from the global contacts as well
1128 $author = notags(unxmlify($data->author));
1130 $contact = self::contact_by_handle($importer["uid"], $author);
1132 logger("cannot find contact for author: ".$author);
1136 // We now remove the contact
1137 contact_remove($contact["id"]);
1142 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1144 * @param string $author Author handle
1145 * @param string $guid Message guid
1147 * @return string The constructed uri or the one from our database
1149 private function get_uri_from_guid($author, $guid) {
1151 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1153 return $r[0]["uri"];
1155 return $author.":".$guid;
1159 * @brief Processes an incoming comment
1161 * @param array $importer Array of the importer user
1162 * @param string $sender The sender of the message
1163 * @param object $data The message object
1164 * @param string $xml The original XML of the message
1166 * @return int The message id of the generated comment or "false" if there was an error
1168 private function receive_comment($importer, $sender, $data, $xml) {
1169 $guid = notags(unxmlify($data->guid));
1170 $parent_guid = notags(unxmlify($data->parent_guid));
1171 $text = unxmlify($data->text);
1172 $author = notags(unxmlify($data->author));
1174 if (isset($data->created_at)) {
1175 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1177 $created_at = datetime_convert();
1180 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1185 $message_id = self::message_exists($importer["uid"], $guid);
1190 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1191 if (!$parent_item) {
1195 $person = self::person_by_handle($author);
1196 if (!is_array($person)) {
1197 logger("unable to find author details");
1201 // Fetch the contact id - if we know this contact
1202 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1204 $datarray = array();
1206 $datarray["uid"] = $importer["uid"];
1207 $datarray["contact-id"] = $author_contact["cid"];
1208 $datarray["network"] = $author_contact["network"];
1210 $datarray["author-name"] = $person["name"];
1211 $datarray["author-link"] = $person["url"];
1212 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1214 $datarray["owner-name"] = $contact["name"];
1215 $datarray["owner-link"] = $contact["url"];
1216 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1218 $datarray["guid"] = $guid;
1219 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1221 $datarray["type"] = "remote-comment";
1222 $datarray["verb"] = ACTIVITY_POST;
1223 $datarray["gravity"] = GRAVITY_COMMENT;
1224 $datarray["parent-uri"] = $parent_item["uri"];
1226 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1227 $datarray["object"] = $xml;
1229 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1231 $body = diaspora2bb($text);
1233 $datarray["body"] = self::replace_people_guid($body, $person["url"]);
1235 self::fetch_guid($datarray);
1237 $message_id = item_store($datarray);
1240 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1243 // If we are the origin of the parent we store the original data and notify our followers
1244 if($message_id AND $parent_item["origin"]) {
1246 // Formerly we stored the signed text, the signature and the author in different fields.
1247 // We now store the raw data so that we are more flexible.
1248 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1249 intval($message_id),
1250 dbesc(json_encode($data))
1254 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1261 * @brief processes and stores private messages
1263 * @param array $importer Array of the importer user
1264 * @param array $contact The contact of the message
1265 * @param object $data The message object
1266 * @param array $msg Array of the processed message, author handle and key
1267 * @param object $mesg The private message
1268 * @param array $conversation The conversation record to which this message belongs
1270 * @return bool "true" if it was successful
1272 private function receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation) {
1273 $guid = notags(unxmlify($data->guid));
1274 $subject = notags(unxmlify($data->subject));
1275 $author = notags(unxmlify($data->author));
1277 $msg_guid = notags(unxmlify($mesg->guid));
1278 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1279 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1280 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1281 $msg_text = unxmlify($mesg->text);
1282 $msg_created_at = datetime_convert("UTC", "UTC", notags(unxmlify($mesg->created_at)));
1284 // "diaspora_handle" is the element name from the old version
1285 // "author" is the element name from the new version
1286 if ($mesg->author) {
1287 $msg_author = notags(unxmlify($mesg->author));
1288 } elseif ($mesg->diaspora_handle) {
1289 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1294 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1296 if ($msg_conversation_guid != $guid) {
1297 logger("message conversation guid does not belong to the current conversation.");
1301 $body = diaspora2bb($msg_text);
1302 $message_uri = $msg_author.":".$msg_guid;
1304 $author_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1306 $author_signature = base64_decode($msg_author_signature);
1308 if (strcasecmp($msg_author,$msg["author"]) == 0) {
1312 $person = self::person_by_handle($msg_author);
1314 if (is_array($person) && x($person, "pubkey")) {
1315 $key = $person["pubkey"];
1317 logger("unable to find author details");
1322 if (!rsa_verify($author_signed_data, $author_signature, $key, "sha256")) {
1323 logger("verification failed.");
1327 if ($msg_parent_author_signature) {
1328 $owner_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1330 $parent_author_signature = base64_decode($msg_parent_author_signature);
1334 if (!rsa_verify($owner_signed_data, $parent_author_signature, $key, "sha256")) {
1335 logger("owner verification failed.");
1340 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' LIMIT 1",
1343 if (dbm::is_result($r)) {
1344 logger("duplicate message already delivered.", LOGGER_DEBUG);
1348 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1349 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1350 intval($importer["uid"]),
1352 intval($conversation["id"]),
1353 dbesc($person["name"]),
1354 dbesc($person["photo"]),
1355 dbesc($person["url"]),
1356 intval($contact["id"]),
1361 dbesc($message_uri),
1362 dbesc($author.":".$guid),
1363 dbesc($msg_created_at)
1366 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1367 dbesc(datetime_convert()),
1368 intval($conversation["id"])
1372 "type" => NOTIFY_MAIL,
1373 "notify_flags" => $importer["notify-flags"],
1374 "language" => $importer["language"],
1375 "to_name" => $importer["username"],
1376 "to_email" => $importer["email"],
1377 "uid" =>$importer["uid"],
1378 "item" => array("subject" => $subject, "body" => $body),
1379 "source_name" => $person["name"],
1380 "source_link" => $person["url"],
1381 "source_photo" => $person["thumb"],
1382 "verb" => ACTIVITY_POST,
1389 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1391 * @param array $importer Array of the importer user
1392 * @param array $msg Array of the processed message, author handle and key
1393 * @param object $data The message object
1395 * @return bool Success
1397 private function receive_conversation($importer, $msg, $data) {
1398 $guid = notags(unxmlify($data->guid));
1399 $subject = notags(unxmlify($data->subject));
1400 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1401 $author = notags(unxmlify($data->author));
1402 $participants = notags(unxmlify($data->participants));
1404 $messages = $data->message;
1406 if (!count($messages)) {
1407 logger("empty conversation");
1411 $contact = self::allowed_contact_by_handle($importer, $msg["author"], true);
1415 $conversation = null;
1417 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1418 intval($importer["uid"]),
1422 $conversation = $c[0];
1424 $r = q("INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1425 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1426 intval($importer["uid"]),
1430 dbesc(datetime_convert()),
1432 dbesc($participants)
1435 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1436 intval($importer["uid"]),
1441 $conversation = $c[0];
1443 if (!$conversation) {
1444 logger("unable to create conversation.");
1448 foreach($messages as $mesg)
1449 self::receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation);
1455 * @brief Creates the body for a "like" message
1457 * @param array $contact The contact that send us the "like"
1458 * @param array $parent_item The item array of the parent item
1459 * @param string $guid message guid
1461 * @return string the body
1463 private function construct_like_body($contact, $parent_item, $guid) {
1464 $bodyverb = t('%1$s likes %2$s\'s %3$s');
1466 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1467 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1468 $plink = "[url=".App::get_baseurl()."/display/".urlencode($guid)."]".t("status")."[/url]";
1470 return sprintf($bodyverb, $ulink, $alink, $plink);
1474 * @brief Creates a XML object for a "like"
1476 * @param array $importer Array of the importer user
1477 * @param array $parent_item The item array of the parent item
1479 * @return string The XML
1481 private function construct_like_object($importer, $parent_item) {
1482 $objtype = ACTIVITY_OBJ_NOTE;
1483 $link = '<link rel="alternate" type="text/html" href="'.App::get_baseurl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1484 $parent_body = $parent_item["body"];
1486 $xmldata = array("object" => array("type" => $objtype,
1488 "id" => $parent_item["uri"],
1491 "content" => $parent_body));
1493 return xml::from_array($xmldata, $xml, true);
1497 * @brief Processes "like" messages
1499 * @param array $importer Array of the importer user
1500 * @param string $sender The sender of the message
1501 * @param object $data The message object
1503 * @return int The message id of the generated like or "false" if there was an error
1505 private function receive_like($importer, $sender, $data) {
1506 $positive = notags(unxmlify($data->positive));
1507 $guid = notags(unxmlify($data->guid));
1508 $parent_type = notags(unxmlify($data->parent_type));
1509 $parent_guid = notags(unxmlify($data->parent_guid));
1510 $author = notags(unxmlify($data->author));
1512 // likes on comments aren't supported by Diaspora - only on posts
1513 // But maybe this will be supported in the future, so we will accept it.
1514 if (!in_array($parent_type, array("Post", "Comment")))
1517 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1521 $message_id = self::message_exists($importer["uid"], $guid);
1525 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1529 $person = self::person_by_handle($author);
1530 if (!is_array($person)) {
1531 logger("unable to find author details");
1535 // Fetch the contact id - if we know this contact
1536 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1538 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
1539 // We would accept this anyhow.
1540 if ($positive == "true")
1541 $verb = ACTIVITY_LIKE;
1543 $verb = ACTIVITY_DISLIKE;
1545 $datarray = array();
1547 $datarray["uid"] = $importer["uid"];
1548 $datarray["contact-id"] = $author_contact["cid"];
1549 $datarray["network"] = $author_contact["network"];
1551 $datarray["author-name"] = $person["name"];
1552 $datarray["author-link"] = $person["url"];
1553 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1555 $datarray["owner-name"] = $contact["name"];
1556 $datarray["owner-link"] = $contact["url"];
1557 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1559 $datarray["guid"] = $guid;
1560 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1562 $datarray["type"] = "activity";
1563 $datarray["verb"] = $verb;
1564 $datarray["gravity"] = GRAVITY_LIKE;
1565 $datarray["parent-uri"] = $parent_item["uri"];
1567 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
1568 $datarray["object"] = self::construct_like_object($importer, $parent_item);
1570 $datarray["body"] = self::construct_like_body($contact, $parent_item, $guid);
1572 $message_id = item_store($datarray);
1575 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1577 // If we are the origin of the parent we store the original data and notify our followers
1578 if($message_id AND $parent_item["origin"]) {
1580 // Formerly we stored the signed text, the signature and the author in different fields.
1581 // We now store the raw data so that we are more flexible.
1582 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1583 intval($message_id),
1584 dbesc(json_encode($data))
1588 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1595 * @brief Processes private messages
1597 * @param array $importer Array of the importer user
1598 * @param object $data The message object
1600 * @return bool Success?
1602 private function receive_message($importer, $data) {
1603 $guid = notags(unxmlify($data->guid));
1604 $parent_guid = notags(unxmlify($data->parent_guid));
1605 $text = unxmlify($data->text);
1606 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1607 $author = notags(unxmlify($data->author));
1608 $conversation_guid = notags(unxmlify($data->conversation_guid));
1610 $contact = self::allowed_contact_by_handle($importer, $author, true);
1615 $conversation = null;
1617 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1618 intval($importer["uid"]),
1619 dbesc($conversation_guid)
1622 $conversation = $c[0];
1624 logger("conversation not available.");
1628 $message_uri = $author.":".$guid;
1630 $person = self::person_by_handle($author);
1632 logger("unable to find author details");
1636 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1637 dbesc($message_uri),
1638 intval($importer["uid"])
1640 if (dbm::is_result($r)) {
1641 logger("duplicate message already delivered.", LOGGER_DEBUG);
1645 $body = diaspora2bb($text);
1647 $body = self::replace_people_guid($body, $person["url"]);
1649 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1650 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1651 intval($importer["uid"]),
1653 intval($conversation["id"]),
1654 dbesc($person["name"]),
1655 dbesc($person["photo"]),
1656 dbesc($person["url"]),
1657 intval($contact["id"]),
1658 dbesc($conversation["subject"]),
1662 dbesc($message_uri),
1663 dbesc($author.":".$parent_guid),
1667 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1668 dbesc(datetime_convert()),
1669 intval($conversation["id"])
1676 * @brief Processes participations - unsupported by now
1678 * @param array $importer Array of the importer user
1679 * @param object $data The message object
1681 * @return bool always true
1683 private function receive_participation($importer, $data) {
1684 // I'm not sure if we can fully support this message type
1689 * @brief Processes photos - unneeded
1691 * @param array $importer Array of the importer user
1692 * @param object $data The message object
1694 * @return bool always true
1696 private function receive_photo($importer, $data) {
1697 // There doesn't seem to be a reason for this function, since the photo data is transmitted in the status message as well
1702 * @brief Processes poll participations - unssupported
1704 * @param array $importer Array of the importer user
1705 * @param object $data The message object
1707 * @return bool always true
1709 private function receive_poll_participation($importer, $data) {
1710 // We don't support polls by now
1715 * @brief Processes incoming profile updates
1717 * @param array $importer Array of the importer user
1718 * @param object $data The message object
1720 * @return bool Success
1722 private function receive_profile($importer, $data) {
1723 $author = strtolower(notags(unxmlify($data->author)));
1725 $contact = self::contact_by_handle($importer["uid"], $author);
1729 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
1730 $image_url = unxmlify($data->image_url);
1731 $birthday = unxmlify($data->birthday);
1732 $location = diaspora2bb(unxmlify($data->location));
1733 $about = diaspora2bb(unxmlify($data->bio));
1734 $gender = unxmlify($data->gender);
1735 $searchable = (unxmlify($data->searchable) == "true");
1736 $nsfw = (unxmlify($data->nsfw) == "true");
1737 $tags = unxmlify($data->tag_string);
1739 $tags = explode("#", $tags);
1741 $keywords = array();
1742 foreach ($tags as $tag) {
1743 $tag = trim(strtolower($tag));
1748 $keywords = implode(", ", $keywords);
1750 $handle_parts = explode("@", $author);
1751 $nick = $handle_parts[0];
1754 $name = $handle_parts[0];
1756 if( preg_match("|^https?://|", $image_url) === 0)
1757 $image_url = "http://".$handle_parts[1].$image_url;
1759 update_contact_avatar($image_url, $importer["uid"], $contact["id"]);
1761 // Generic birthday. We don't know the timezone. The year is irrelevant.
1763 $birthday = str_replace("1000", "1901", $birthday);
1765 if ($birthday != "")
1766 $birthday = datetime_convert("UTC", "UTC", $birthday, "Y-m-d");
1768 // this is to prevent multiple birthday notifications in a single year
1769 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
1771 if(substr($birthday,5) === substr($contact["bd"],5))
1772 $birthday = $contact["bd"];
1774 $r = q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
1775 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
1779 dbesc(datetime_convert()),
1785 intval($contact["id"]),
1786 intval($importer["uid"])
1790 poco_check($contact["url"], $name, NETWORK_DIASPORA, $image_url, $about, $location, $gender, $keywords, "",
1791 datetime_convert(), 2, $contact["id"], $importer["uid"]);
1794 $gcontact = array("url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
1795 "photo" => $image_url, "name" => $name, "location" => $location,
1796 "about" => $about, "birthday" => $birthday, "gender" => $gender,
1797 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
1798 "hide" => !$searchable, "nsfw" => $nsfw);
1800 update_gcontact($gcontact);
1802 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
1808 * @brief Processes incoming friend requests
1810 * @param array $importer Array of the importer user
1811 * @param array $contact The contact that send the request
1813 private function receive_request_make_friend($importer, $contact) {
1817 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1818 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1819 intval(CONTACT_IS_FRIEND),
1820 intval($contact["id"]),
1821 intval($importer["uid"])
1824 // send notification
1826 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
1827 intval($importer["uid"])
1830 if($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(get_pconfig($importer["uid"], "system", "post_newfriend"))) {
1832 $self = q("SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
1833 intval($importer["uid"])
1836 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
1838 if($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
1841 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
1842 $arr["uid"] = $importer["uid"];
1843 $arr["contact-id"] = $self[0]["id"];
1845 $arr["type"] = 'wall';
1846 $arr["gravity"] = 0;
1848 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
1849 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
1850 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
1851 $arr["verb"] = ACTIVITY_FRIEND;
1852 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
1854 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
1855 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1856 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
1857 $arr["body"] = sprintf(t("%1$s is now friends with %2$s"), $A, $B)."\n\n\n".$Bphoto;
1859 $arr["object"] = self::construct_new_friend_object($contact);
1861 $arr["last-child"] = 1;
1863 $arr["allow_cid"] = $user[0]["allow_cid"];
1864 $arr["allow_gid"] = $user[0]["allow_gid"];
1865 $arr["deny_cid"] = $user[0]["deny_cid"];
1866 $arr["deny_gid"] = $user[0]["deny_gid"];
1868 $i = item_store($arr);
1870 proc_run(PRIORITY_HIGH, "include/notifier.php", "activity", $i);
1876 * @brief Creates a XML object for a "new friend" message
1878 * @param array $contact Array of the contact
1880 * @return string The XML
1882 private function construct_new_friend_object($contact) {
1883 $objtype = ACTIVITY_OBJ_PERSON;
1884 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
1885 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
1887 $xmldata = array("object" => array("type" => $objtype,
1888 "title" => $contact["name"],
1889 "id" => $contact["url"]."/".$contact["name"],
1892 return xml::from_array($xmldata, $xml, true);
1896 * @brief Processes incoming sharing notification
1898 * @param array $importer Array of the importer user
1899 * @param object $data The message object
1901 * @return bool Success
1903 private function receive_contact_request($importer, $data) {
1904 $author = unxmlify($data->author);
1905 $recipient = unxmlify($data->recipient);
1907 if (!$author || !$recipient)
1910 // the current protocol version doesn't know these fields
1911 // That means that we will assume their existance
1912 if (isset($data->following))
1913 $following = (unxmlify($data->following) == "true");
1917 if (isset($data->sharing))
1918 $sharing = (unxmlify($data->sharing) == "true");
1922 $contact = self::contact_by_handle($importer["uid"],$author);
1924 // perhaps we were already sharing with this person. Now they're sharing with us.
1925 // That makes us friends.
1927 if ($following AND $sharing) {
1928 logger("Author ".$author." (Contact ".$contact["id"].") wants to have a bidirectional conection.", LOGGER_DEBUG);
1929 self::receive_request_make_friend($importer, $contact);
1931 // refetch the contact array
1932 $contact = self::contact_by_handle($importer["uid"],$author);
1934 // If we are now friends, we are sending a share message.
1935 // Normally we needn't to do so, but the first message could have been vanished.
1936 if (in_array($contact["rel"], array(CONTACT_IS_FRIEND, CONTACT_IS_FOLLOWER))) {
1937 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
1939 logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
1940 $ret = self::send_share($u[0], $contact);
1944 } else { /// @todo Handle all possible variations of adding and retracting of permissions
1945 logger("Author ".$author." (Contact ".$contact["id"].") wants to change the relationship: Following: ".$following." - sharing: ".$sharing. "(By now unsupported)", LOGGER_DEBUG);
1950 if (!$following AND $sharing AND in_array($importer["page-flags"], array(PAGE_SOAPBOX, PAGE_NORMAL))) {
1951 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
1953 } elseif (!$following AND !$sharing) {
1954 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
1956 } elseif (!$following AND $sharing) {
1957 logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
1958 } elseif ($following AND $sharing) {
1959 logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
1960 } elseif ($following AND !$sharing) {
1961 logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
1964 $ret = self::person_by_handle($author);
1966 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
1967 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
1971 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
1973 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
1974 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
1975 intval($importer["uid"]),
1976 dbesc($ret["network"]),
1977 dbesc($ret["addr"]),
1980 dbesc(normalise_link($ret["url"])),
1982 dbesc($ret["name"]),
1983 dbesc($ret["nick"]),
1984 dbesc($ret["photo"]),
1985 dbesc($ret["pubkey"]),
1986 dbesc($ret["notify"]),
1987 dbesc($ret["poll"]),
1992 // find the contact record we just created
1994 $contact_record = self::contact_by_handle($importer["uid"],$author);
1996 if (!$contact_record) {
1997 logger("unable to locate newly created contact record.");
2001 logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
2003 $def_gid = get_default_group($importer['uid'], $ret["network"]);
2005 if(intval($def_gid))
2006 group_add_member($importer["uid"], "", $contact_record["id"], $def_gid);
2008 update_contact_avatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
2010 if($importer["page-flags"] == PAGE_NORMAL) {
2012 logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
2014 $hash = random_string().(string)time(); // Generate a confirm_key
2016 $ret = q("INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
2017 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
2018 intval($importer["uid"]),
2019 intval($contact_record["id"]),
2022 dbesc(t("Sharing notification from Diaspora network")),
2024 dbesc(datetime_convert())
2028 // automatic friend approval
2030 logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
2032 update_contact_avatar($contact_record["photo"],$importer["uid"],$contact_record["id"]);
2034 // technically they are sharing with us (CONTACT_IS_SHARING),
2035 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
2036 // we are going to change the relationship and make them a follower.
2038 if (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing AND $following)
2039 $new_relation = CONTACT_IS_FRIEND;
2040 elseif (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing)
2041 $new_relation = CONTACT_IS_SHARING;
2043 $new_relation = CONTACT_IS_FOLLOWER;
2045 $r = q("UPDATE `contact` SET `rel` = %d,
2053 intval($new_relation),
2054 dbesc(datetime_convert()),
2055 dbesc(datetime_convert()),
2056 intval($contact_record["id"])
2059 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2061 logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2062 $ret = self::send_share($u[0], $contact_record);
2064 // Send the profile data, maybe it weren't transmitted before
2065 self::send_profile($importer["uid"], array($contact_record));
2073 * @brief Fetches a message with a given guid
2075 * @param string $guid message guid
2076 * @param string $orig_author handle of the original post
2077 * @param string $author handle of the sharer
2079 * @return array The fetched item
2081 private function original_item($guid, $orig_author, $author) {
2083 // Do we already have this item?
2084 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2085 `author-name`, `author-link`, `author-avatar`
2086 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2089 if (dbm::is_result($r)) {
2090 logger("reshared message ".$guid." already exists on system.");
2092 // Maybe it is already a reshared item?
2093 // Then refetch the content, if it is a reshare from a reshare.
2094 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2095 if (self::is_reshare($r[0]["body"], true)) {
2097 } elseif (self::is_reshare($r[0]["body"], false)) {
2098 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2100 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2102 // Add OEmbed and other information to the body
2103 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
2111 if (!dbm::is_result($r)) {
2112 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2113 logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2114 $item_id = self::store_by_guid($guid, $server);
2117 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2118 logger("2nd try: reshared message ".$guid." will be fetched without SLL from the server ".$server);
2119 $item_id = self::store_by_guid($guid, $server);
2123 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2124 `author-name`, `author-link`, `author-avatar`
2125 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2128 if (dbm::is_result($r)) {
2129 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2130 if (self::is_reshare($r[0]["body"], false)) {
2131 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2132 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2144 * @brief Processes a reshare message
2146 * @param array $importer Array of the importer user
2147 * @param object $data The message object
2148 * @param string $xml The original XML of the message
2150 * @return int the message id
2152 private function receive_reshare($importer, $data, $xml) {
2153 $root_author = notags(unxmlify($data->root_author));
2154 $root_guid = notags(unxmlify($data->root_guid));
2155 $guid = notags(unxmlify($data->guid));
2156 $author = notags(unxmlify($data->author));
2157 $public = notags(unxmlify($data->public));
2158 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2160 $contact = self::allowed_contact_by_handle($importer, $author, false);
2164 $message_id = self::message_exists($importer["uid"], $guid);
2168 $original_item = self::original_item($root_guid, $root_author, $author);
2169 if (!$original_item)
2172 $orig_url = App::get_baseurl()."/display/".$original_item["guid"];
2174 $datarray = array();
2176 $datarray["uid"] = $importer["uid"];
2177 $datarray["contact-id"] = $contact["id"];
2178 $datarray["network"] = NETWORK_DIASPORA;
2180 $datarray["author-name"] = $contact["name"];
2181 $datarray["author-link"] = $contact["url"];
2182 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2184 $datarray["owner-name"] = $datarray["author-name"];
2185 $datarray["owner-link"] = $datarray["author-link"];
2186 $datarray["owner-avatar"] = $datarray["author-avatar"];
2188 $datarray["guid"] = $guid;
2189 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2191 $datarray["verb"] = ACTIVITY_POST;
2192 $datarray["gravity"] = GRAVITY_PARENT;
2194 $datarray["object"] = $xml;
2196 $prefix = share_header($original_item["author-name"], $original_item["author-link"], $original_item["author-avatar"],
2197 $original_item["guid"], $original_item["created"], $orig_url);
2198 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2200 $datarray["tag"] = $original_item["tag"];
2201 $datarray["app"] = $original_item["app"];
2203 $datarray["plink"] = self::plink($author, $guid);
2204 $datarray["private"] = (($public == "false") ? 1 : 0);
2205 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2207 $datarray["object-type"] = $original_item["object-type"];
2209 self::fetch_guid($datarray);
2210 $message_id = item_store($datarray);
2213 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2219 * @brief Processes retractions
2221 * @param array $importer Array of the importer user
2222 * @param array $contact The contact of the item owner
2223 * @param object $data The message object
2225 * @return bool success
2227 private function item_retraction($importer, $contact, $data) {
2228 $target_type = notags(unxmlify($data->target_type));
2229 $target_guid = notags(unxmlify($data->target_guid));
2230 $author = notags(unxmlify($data->author));
2232 $person = self::person_by_handle($author);
2233 if (!is_array($person)) {
2234 logger("unable to find author detail for ".$author);
2238 $r = q("SELECT `id`, `parent`, `parent-uri`, `author-link` FROM `item` WHERE `guid` = '%s' AND `uid` = %d AND NOT `file` LIKE '%%[%%' LIMIT 1",
2239 dbesc($target_guid),
2240 intval($importer["uid"])
2245 // Check if the sender is the thread owner
2246 $p = q("SELECT `id`, `author-link`, `origin` FROM `item` WHERE `id` = %d",
2247 intval($r[0]["parent"]));
2249 // Only delete it if the parent author really fits
2250 if (!link_compare($p[0]["author-link"], $contact["url"]) AND !link_compare($r[0]["author-link"], $contact["url"])) {
2251 logger("Thread author ".$p[0]["author-link"]." and item author ".$r[0]["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2255 // 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
2256 q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' WHERE `id` = %d",
2257 dbesc(datetime_convert()),
2258 dbesc(datetime_convert()),
2261 delete_thread($r[0]["id"], $r[0]["parent-uri"]);
2263 logger("Deleted target ".$target_guid." (".$r[0]["id"].") from user ".$importer["uid"]." parent: ".$p[0]["id"], LOGGER_DEBUG);
2265 // Now check if the retraction needs to be relayed by us
2266 if($p[0]["origin"]) {
2268 proc_run(PRIORITY_HIGH, "include/notifier.php", "drop", $r[0]["id"]);
2275 * @brief Receives retraction messages
2277 * @param array $importer Array of the importer user
2278 * @param string $sender The sender of the message
2279 * @param object $data The message object
2281 * @return bool Success
2283 private function receive_retraction($importer, $sender, $data) {
2284 $target_type = notags(unxmlify($data->target_type));
2286 $contact = self::contact_by_handle($importer["uid"], $sender);
2288 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2292 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2294 switch ($target_type) {
2297 case "Post": // "Post" will be supported in a future version
2299 case "StatusMessage":
2300 return self::item_retraction($importer, $contact, $data);;
2304 /// @todo What should we do with an "unshare"?
2305 // Removing the contact isn't correct since we still can read the public items
2306 contact_remove($contact["id"]);
2310 logger("Unknown target type ".$target_type);
2317 * @brief Receives status messages
2319 * @param array $importer Array of the importer user
2320 * @param object $data The message object
2321 * @param string $xml The original XML of the message
2323 * @return int The message id of the newly created item
2325 private function receive_status_message($importer, $data, $xml) {
2326 $raw_message = unxmlify($data->raw_message);
2327 $guid = notags(unxmlify($data->guid));
2328 $author = notags(unxmlify($data->author));
2329 $public = notags(unxmlify($data->public));
2330 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2331 $provider_display_name = notags(unxmlify($data->provider_display_name));
2333 /// @todo enable support for polls
2334 //if ($data->poll) {
2335 // foreach ($data->poll AS $poll)
2339 $contact = self::allowed_contact_by_handle($importer, $author, false);
2344 $message_id = self::message_exists($importer["uid"], $guid);
2350 if ($data->location) {
2351 foreach ($data->location->children() AS $fieldname => $data) {
2352 $address[$fieldname] = notags(unxmlify($data));
2356 $body = diaspora2bb($raw_message);
2358 $datarray = array();
2360 // Attach embedded pictures to the body
2362 foreach ($data->photo AS $photo) {
2363 $body = "[img]".unxmlify($photo->remote_photo_path).
2364 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2367 $datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
2369 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2371 // Add OEmbed and other information to the body
2372 if (!self::is_redmatrix($contact["url"])) {
2373 $body = add_page_info_to_body($body, false, true);
2377 $datarray["uid"] = $importer["uid"];
2378 $datarray["contact-id"] = $contact["id"];
2379 $datarray["network"] = NETWORK_DIASPORA;
2381 $datarray["author-name"] = $contact["name"];
2382 $datarray["author-link"] = $contact["url"];
2383 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2385 $datarray["owner-name"] = $datarray["author-name"];
2386 $datarray["owner-link"] = $datarray["author-link"];
2387 $datarray["owner-avatar"] = $datarray["author-avatar"];
2389 $datarray["guid"] = $guid;
2390 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2392 $datarray["verb"] = ACTIVITY_POST;
2393 $datarray["gravity"] = GRAVITY_PARENT;
2395 $datarray["object"] = $xml;
2397 $datarray["body"] = self::replace_people_guid($body, $contact["url"]);
2399 if ($provider_display_name != "") {
2400 $datarray["app"] = $provider_display_name;
2403 $datarray["plink"] = self::plink($author, $guid);
2404 $datarray["private"] = (($public == "false") ? 1 : 0);
2405 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2407 if (isset($address["address"])) {
2408 $datarray["location"] = $address["address"];
2411 if (isset($address["lat"]) AND isset($address["lng"])) {
2412 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2415 self::fetch_guid($datarray);
2416 $message_id = item_store($datarray);
2419 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2425 /* ************************************************************************************** *
2426 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2427 * ************************************************************************************** */
2430 * @brief returnes the handle of a contact
2432 * @param array $me contact array
2434 * @return string the handle in the format user@domain.tld
2436 private function my_handle($contact) {
2437 if ($contact["addr"] != "")
2438 return $contact["addr"];
2440 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2441 // So - just in case - we build the the address here.
2442 if ($contact["nickname"] != "")
2443 $nick = $contact["nickname"];
2445 $nick = $contact["nick"];
2447 return $nick."@".substr(App::get_baseurl(), strpos(App::get_baseurl(),"://") + 3);
2451 * @brief Creates the envelope for the "fetch" endpoint
2453 * @param string $msg The message that is to be transmitted
2454 * @param array $user The record of the sender
2456 * @return string The envelope
2459 public static function build_magic_envelope($msg, $user) {
2461 $b64url_data = base64url_encode($msg);
2462 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2464 $key_id = base64url_encode(self::my_handle($user));
2465 $type = "application/xml";
2466 $encoding = "base64url";
2467 $alg = "RSA-SHA256";
2468 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2469 $signature = rsa_sign($signable_data, $user["prvkey"]);
2470 $sig = base64url_encode($signature);
2472 $xmldata = array("me:env" => array("me:data" => $data,
2473 "@attributes" => array("type" => $type),
2474 "me:encoding" => $encoding,
2477 "@attributes2" => array("key_id" => $key_id)));
2479 $namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
2481 return xml::from_array($xmldata, $xml, false, $namespaces);
2485 * @brief Creates the envelope for a public message
2487 * @param string $msg The message that is to be transmitted
2488 * @param array $user The record of the sender
2489 * @param array $contact Target of the communication
2490 * @param string $prvkey The private key of the sender
2491 * @param string $pubkey The public key of the receiver
2493 * @return string The envelope
2495 private function build_public_message($msg, $user, $contact, $prvkey, $pubkey) {
2497 logger("Message: ".$msg, LOGGER_DATA);
2499 $handle = self::my_handle($user);
2501 $b64url_data = base64url_encode($msg);
2503 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2505 $type = "application/xml";
2506 $encoding = "base64url";
2507 $alg = "RSA-SHA256";
2509 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2511 $signature = rsa_sign($signable_data,$prvkey);
2512 $sig = base64url_encode($signature);
2514 $xmldata = array("diaspora" => array("header" => array("author_id" => $handle),
2515 "me:env" => array("me:encoding" => $encoding,
2518 "@attributes" => array("type" => $type),
2519 "me:sig" => $sig)));
2521 $namespaces = array("" => "https://joindiaspora.com/protocol",
2522 "me" => "http://salmon-protocol.org/ns/magic-env");
2524 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2526 logger("magic_env: ".$magic_env, LOGGER_DATA);
2531 * @brief Creates the envelope for a private message
2533 * @param string $msg The message that is to be transmitted
2534 * @param array $user The record of the sender
2535 * @param array $contact Target of the communication
2536 * @param string $prvkey The private key of the sender
2537 * @param string $pubkey The public key of the receiver
2539 * @return string The envelope
2541 private function build_private_message($msg, $user, $contact, $prvkey, $pubkey) {
2543 logger("Message: ".$msg, LOGGER_DATA);
2545 // without a public key nothing will work
2548 logger("pubkey missing: contact id: ".$contact["id"]);
2552 $inner_aes_key = random_string(32);
2553 $b_inner_aes_key = base64_encode($inner_aes_key);
2554 $inner_iv = random_string(16);
2555 $b_inner_iv = base64_encode($inner_iv);
2557 $outer_aes_key = random_string(32);
2558 $b_outer_aes_key = base64_encode($outer_aes_key);
2559 $outer_iv = random_string(16);
2560 $b_outer_iv = base64_encode($outer_iv);
2562 $handle = self::my_handle($user);
2564 $padded_data = pkcs5_pad($msg,16);
2565 $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
2567 $b64_data = base64_encode($inner_encrypted);
2570 $b64url_data = base64url_encode($b64_data);
2571 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2573 $type = "application/xml";
2574 $encoding = "base64url";
2575 $alg = "RSA-SHA256";
2577 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2579 $signature = rsa_sign($signable_data,$prvkey);
2580 $sig = base64url_encode($signature);
2582 $xmldata = array("decrypted_header" => array("iv" => $b_inner_iv,
2583 "aes_key" => $b_inner_aes_key,
2584 "author_id" => $handle));
2586 $decrypted_header = xml::from_array($xmldata, $xml, true);
2587 $decrypted_header = pkcs5_pad($decrypted_header,16);
2589 $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
2591 $outer_json = json_encode(array("iv" => $b_outer_iv, "key" => $b_outer_aes_key));
2593 $encrypted_outer_key_bundle = "";
2594 openssl_public_encrypt($outer_json, $encrypted_outer_key_bundle, $pubkey);
2596 $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
2598 logger("outer_bundle: ".$b64_encrypted_outer_key_bundle." key: ".$pubkey, LOGGER_DATA);
2600 $encrypted_header_json_object = json_encode(array("aes_key" => base64_encode($encrypted_outer_key_bundle),
2601 "ciphertext" => base64_encode($ciphertext)));
2602 $cipher_json = base64_encode($encrypted_header_json_object);
2604 $xmldata = array("diaspora" => array("encrypted_header" => $cipher_json,
2605 "me:env" => array("me:encoding" => $encoding,
2608 "@attributes" => array("type" => $type),
2609 "me:sig" => $sig)));
2611 $namespaces = array("" => "https://joindiaspora.com/protocol",
2612 "me" => "http://salmon-protocol.org/ns/magic-env");
2614 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2616 logger("magic_env: ".$magic_env, LOGGER_DATA);
2621 * @brief Create the envelope for a message
2623 * @param string $msg The message that is to be transmitted
2624 * @param array $user The record of the sender
2625 * @param array $contact Target of the communication
2626 * @param string $prvkey The private key of the sender
2627 * @param string $pubkey The public key of the receiver
2628 * @param bool $public Is the message public?
2630 * @return string The message that will be transmitted to other servers
2632 private function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
2635 $magic_env = self::build_public_message($msg,$user,$contact,$prvkey,$pubkey);
2637 $magic_env = self::build_private_message($msg,$user,$contact,$prvkey,$pubkey);
2639 // The data that will be transmitted is double encoded via "urlencode", strange ...
2640 $slap = "xml=".urlencode(urlencode($magic_env));
2645 * @brief Creates a signature for a message
2647 * @param array $owner the array of the owner of the message
2648 * @param array $message The message that is to be signed
2650 * @return string The signature
2652 private function signature($owner, $message) {
2654 unset($sigmsg["author_signature"]);
2655 unset($sigmsg["parent_author_signature"]);
2657 $signed_text = implode(";", $sigmsg);
2659 return base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
2663 * @brief Transmit a message to a target server
2665 * @param array $owner the array of the item owner
2666 * @param array $contact Target of the communication
2667 * @param string $slap The message that is to be transmitted
2668 * @param bool $public_batch Is it a public post?
2669 * @param bool $queue_run Is the transmission called from the queue?
2670 * @param string $guid message guid
2672 * @return int Result of the transmission
2674 public static function transmit($owner, $contact, $slap, $public_batch, $queue_run=false, $guid = "") {
2678 $enabled = intval(get_config("system", "diaspora_enabled"));
2682 $logid = random_string(4);
2683 $dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
2685 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
2689 logger("transmit: ".$logid."-".$guid." ".$dest_url);
2691 if (!$queue_run && was_recently_delayed($contact["id"])) {
2694 if (!intval(get_config("system", "diaspora_test"))) {
2695 post_url($dest_url."/", $slap);
2696 $return_code = $a->get_curl_code();
2698 logger("test_mode");
2703 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
2705 if(!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
2706 logger("queue message");
2708 $r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
2709 intval($contact["id"]),
2710 dbesc(NETWORK_DIASPORA),
2712 intval($public_batch)
2715 logger("add_to_queue ignored - identical item already in queue");
2717 // queue message for redelivery
2718 add_to_queue($contact["id"], NETWORK_DIASPORA, $slap, $public_batch);
2720 // The message could not be delivered. We mark the contact as "dead"
2721 mark_for_death($contact);
2723 } elseif (($return_code >= 200) AND ($return_code <= 299)) {
2724 // We successfully delivered a message, the contact is alive
2725 unmark_for_death($contact);
2728 return(($return_code) ? $return_code : (-1));
2733 * @brief Build the post xml
2735 * @param string $type The message type
2736 * @param array $message The message data
2738 * @return string The post XML
2740 public static function build_post_xml($type, $message) {
2742 $data = array("XML" => array("post" => array($type => $message)));
2743 return xml::from_array($data, $xml);
2747 * @brief Builds and transmit messages
2749 * @param array $owner the array of the item owner
2750 * @param array $contact Target of the communication
2751 * @param string $type The message type
2752 * @param array $message The message data
2753 * @param bool $public_batch Is it a public post?
2754 * @param string $guid message guid
2755 * @param bool $spool Should the transmission be spooled or transmitted?
2757 * @return int Result of the transmission
2759 private function build_and_transmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false) {
2761 $msg = self::build_post_xml($type, $message);
2763 logger('message: '.$msg, LOGGER_DATA);
2764 logger('send guid '.$guid, LOGGER_DEBUG);
2766 // Fallback if the private key wasn't transmitted in the expected field
2767 if ($owner['uprvkey'] == "")
2768 $owner['uprvkey'] = $owner['prvkey'];
2770 $slap = self::build_message($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
2773 add_to_queue($contact['id'], NETWORK_DIASPORA, $slap, $public_batch);
2776 $return_code = self::transmit($owner, $contact, $slap, $public_batch, false, $guid);
2778 logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
2780 return $return_code;
2784 * @brief Sends a "share" message
2786 * @param array $owner the array of the item owner
2787 * @param array $contact Target of the communication
2789 * @return int The result of the transmission
2791 public static function send_share($owner,$contact) {
2793 $message = array("sender_handle" => self::my_handle($owner),
2794 "recipient_handle" => $contact["addr"]);
2796 logger("Send share ".print_r($message, true), LOGGER_DEBUG);
2798 return self::build_and_transmit($owner, $contact, "request", $message);
2802 * @brief sends an "unshare"
2804 * @param array $owner the array of the item owner
2805 * @param array $contact Target of the communication
2807 * @return int The result of the transmission
2809 public static function send_unshare($owner,$contact) {
2811 $message = array("post_guid" => $owner["guid"],
2812 "diaspora_handle" => self::my_handle($owner),
2813 "type" => "Person");
2815 logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
2817 return self::build_and_transmit($owner, $contact, "retraction", $message);
2821 * @brief Checks a message body if it is a reshare
2823 * @param string $body The message body that is to be check
2824 * @param bool $complete Should it be a complete check or a simple check?
2826 * @return array|bool Reshare details or "false" if no reshare
2828 public static function is_reshare($body, $complete = true) {
2829 $body = trim($body);
2831 // Skip if it isn't a pure repeated messages
2832 // Does it start with a share?
2833 if ((strpos($body, "[share") > 0) AND $complete)
2836 // Does it end with a share?
2837 if (strlen($body) > (strrpos($body, "[/share]") + 8))
2840 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2841 // Skip if there is no shared message in there
2842 if ($body == $attributes)
2845 // If we don't do the complete check we quit here
2850 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2851 if ($matches[1] != "")
2852 $guid = $matches[1];
2854 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2855 if ($matches[1] != "")
2856 $guid = $matches[1];
2859 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2860 dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2863 $ret["root_handle"] = self::handle_from_contact($r[0]["contact-id"]);
2864 $ret["root_guid"] = $guid;
2870 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2871 if ($matches[1] != "")
2872 $profile = $matches[1];
2874 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2875 if ($matches[1] != "")
2876 $profile = $matches[1];
2880 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2881 if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2885 preg_match("/link='(.*?)'/ism", $attributes, $matches);
2886 if ($matches[1] != "")
2887 $link = $matches[1];
2889 preg_match('/link="(.*?)"/ism', $attributes, $matches);
2890 if ($matches[1] != "")
2891 $link = $matches[1];
2893 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2894 if (($ret["root_guid"] == $link) OR (trim($ret["root_guid"]) == ""))
2901 * @brief Create a post (status message or reshare)
2903 * @param array $item The item that will be exported
2904 * @param array $owner the array of the item owner
2907 * 'type' -> Message type ("status_message" or "reshare")
2908 * 'message' -> Array of XML elements of the status
2910 public static function build_status($item, $owner) {
2912 $myaddr = self::my_handle($owner);
2914 $public = (($item["private"]) ? "false" : "true");
2916 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
2918 // Detect a share element and do a reshare
2919 if (!$item['private'] AND ($ret = self::is_reshare($item["body"]))) {
2920 $message = array("root_diaspora_id" => $ret["root_handle"],
2921 "root_guid" => $ret["root_guid"],
2922 "guid" => $item["guid"],
2923 "diaspora_handle" => $myaddr,
2924 "public" => $public,
2925 "created_at" => $created,
2926 "provider_display_name" => $item["app"]);
2930 $title = $item["title"];
2931 $body = $item["body"];
2933 // convert to markdown
2934 $body = html_entity_decode(bb2diaspora($body));
2938 $body = "## ".html_entity_decode($title)."\n\n".$body;
2940 if ($item["attach"]) {
2941 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
2943 $body .= "\n".t("Attachments:")."\n";
2944 foreach($matches as $mtch)
2945 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
2949 $location = array();
2951 if ($item["location"] != "")
2952 $location["address"] = $item["location"];
2954 if ($item["coord"] != "") {
2955 $coord = explode(" ", $item["coord"]);
2956 $location["lat"] = $coord[0];
2957 $location["lng"] = $coord[1];
2960 $message = array("raw_message" => $body,
2961 "location" => $location,
2962 "guid" => $item["guid"],
2963 "diaspora_handle" => $myaddr,
2964 "public" => $public,
2965 "created_at" => $created,
2966 "provider_display_name" => $item["app"]);
2968 // Diaspora rejects messages when they contain a location without "lat" or "lng"
2969 if (!isset($location["lat"]) OR !isset($location["lng"])) {
2970 unset($message["location"]);
2973 $type = "status_message";
2975 return array("type" => $type, "message" => $message);
2979 * @brief Sends a post
2981 * @param array $item The item that will be exported
2982 * @param array $owner the array of the item owner
2983 * @param array $contact Target of the communication
2984 * @param bool $public_batch Is it a public post?
2986 * @return int The result of the transmission
2988 public static function send_status($item, $owner, $contact, $public_batch = false) {
2990 $status = self::build_status($item, $owner);
2992 return self::build_and_transmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
2996 * @brief Creates a "like" object
2998 * @param array $item The item that will be exported
2999 * @param array $owner the array of the item owner
3001 * @return array The data for a "like"
3003 private function construct_like($item, $owner) {
3005 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3006 dbesc($item["thr-parent"]));
3007 if (!dbm::is_result($p))
3012 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3015 return(array("positive" => $positive,
3016 "guid" => $item["guid"],
3017 "target_type" => $target_type,
3018 "parent_guid" => $parent["guid"],
3019 "author_signature" => "",
3020 "diaspora_handle" => self::my_handle($owner)));
3024 * @brief Creates the object for a comment
3026 * @param array $item The item that will be exported
3027 * @param array $owner the array of the item owner
3029 * @return array The data for a comment
3031 private function construct_comment($item, $owner) {
3033 $p = q("SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
3034 intval($item["parent"]),
3035 intval($item["parent"])
3038 if (!dbm::is_result($p))
3043 $text = html_entity_decode(bb2diaspora($item["body"]));
3045 return(array("guid" => $item["guid"],
3046 "parent_guid" => $parent["guid"],
3047 "author_signature" => "",
3049 "diaspora_handle" => self::my_handle($owner)));
3053 * @brief Send a like or a comment
3055 * @param array $item The item that will be exported
3056 * @param array $owner the array of the item owner
3057 * @param array $contact Target of the communication
3058 * @param bool $public_batch Is it a public post?
3060 * @return int The result of the transmission
3062 public static function send_followup($item,$owner,$contact,$public_batch = false) {
3064 if($item['verb'] === ACTIVITY_LIKE) {
3065 $message = self::construct_like($item, $owner);
3068 $message = self::construct_comment($item, $owner);
3075 $message["author_signature"] = self::signature($owner, $message);
3077 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3081 * @brief Creates a message from a signature record entry
3083 * @param array $item The item that will be exported
3084 * @param array $signature The entry of the "sign" record
3086 * @return string The message
3088 private function message_from_signature($item, $signature) {
3090 // Split the signed text
3091 $signed_parts = explode(";", $signature['signed_text']);
3093 if ($item["deleted"])
3094 $message = array("parent_author_signature" => "",
3095 "target_guid" => $signed_parts[0],
3096 "target_type" => $signed_parts[1],
3097 "sender_handle" => $signature['signer'],
3098 "target_author_signature" => $signature['signature']);
3099 elseif ($item['verb'] === ACTIVITY_LIKE)
3100 $message = array("positive" => $signed_parts[0],
3101 "guid" => $signed_parts[1],
3102 "target_type" => $signed_parts[2],
3103 "parent_guid" => $signed_parts[3],
3104 "parent_author_signature" => "",
3105 "author_signature" => $signature['signature'],
3106 "diaspora_handle" => $signed_parts[4]);
3108 // Remove the comment guid
3109 $guid = array_shift($signed_parts);
3111 // Remove the parent guid
3112 $parent_guid = array_shift($signed_parts);
3114 // Remove the handle
3115 $handle = array_pop($signed_parts);
3117 // Glue the parts together
3118 $text = implode(";", $signed_parts);
3120 $message = array("guid" => $guid,
3121 "parent_guid" => $parent_guid,
3122 "parent_author_signature" => "",
3123 "author_signature" => $signature['signature'],
3124 "text" => implode(";", $signed_parts),
3125 "diaspora_handle" => $handle);
3131 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
3133 * @param array $item The item that will be exported
3134 * @param array $owner the array of the item owner
3135 * @param array $contact Target of the communication
3136 * @param bool $public_batch Is it a public post?
3138 * @return int The result of the transmission
3140 public static function send_relay($item, $owner, $contact, $public_batch = false) {
3142 if ($item["deleted"])
3143 return self::send_retraction($item, $owner, $contact, $public_batch, true);
3144 elseif ($item['verb'] === ACTIVITY_LIKE)
3149 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3151 // fetch the original signature
3153 $r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3154 intval($item["id"]));
3157 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3163 // Old way - is used by the internal Friendica functions
3164 /// @todo Change all signatur storing functions to the new format
3165 if ($signature['signed_text'] AND $signature['signature'] AND $signature['signer'])
3166 $message = self::message_from_signature($item, $signature);
3168 $msg = json_decode($signature['signed_text'], true);
3171 if (is_array($msg)) {
3172 foreach ($msg AS $field => $data) {
3173 if (!$item["deleted"]) {
3174 if ($field == "author")
3175 $field = "diaspora_handle";
3176 if ($field == "parent_type")
3177 $field = "target_type";
3180 $message[$field] = $data;
3183 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3186 $message["parent_author_signature"] = self::signature($owner, $message);
3188 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3190 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3194 * @brief Sends a retraction (deletion) of a message, like or comment
3196 * @param array $item The item that will be exported
3197 * @param array $owner the array of the item owner
3198 * @param array $contact Target of the communication
3199 * @param bool $public_batch Is it a public post?
3200 * @param bool $relay Is the retraction transmitted from a relay?
3202 * @return int The result of the transmission
3204 public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
3206 $itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
3208 // Check whether the retraction is for a top-level post or whether it's a relayable
3209 if ($item["uri"] !== $item["parent-uri"]) {
3210 $msg_type = "relayable_retraction";
3211 $target_type = (($item["verb"] === ACTIVITY_LIKE) ? "Like" : "Comment");
3213 $msg_type = "signed_retraction";
3214 $target_type = "StatusMessage";
3217 if ($relay AND ($item["uri"] !== $item["parent-uri"]))
3218 $signature = "parent_author_signature";
3220 $signature = "target_author_signature";
3222 $signed_text = $item["guid"].";".$target_type;
3224 $message = array("target_guid" => $item['guid'],
3225 "target_type" => $target_type,
3226 "sender_handle" => $itemaddr,
3227 $signature => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
3229 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
3231 return self::build_and_transmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
3235 * @brief Sends a mail
3237 * @param array $item The item that will be exported
3238 * @param array $owner The owner
3239 * @param array $contact Target of the communication
3241 * @return int The result of the transmission
3243 public static function send_mail($item, $owner, $contact) {
3245 $myaddr = self::my_handle($owner);
3247 $r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3248 intval($item["convid"]),
3249 intval($item["uid"])
3252 if (!dbm::is_result($r)) {
3253 logger("conversation not found.");
3259 "guid" => $cnv["guid"],
3260 "subject" => $cnv["subject"],
3261 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
3262 "diaspora_handle" => $cnv["creator"],
3263 "participant_handles" => $cnv["recips"]
3266 $body = bb2diaspora($item["body"]);
3267 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
3269 $signed_text = $item["guid"].";".$cnv["guid"].";".$body.";".$created.";".$myaddr.";".$cnv['guid'];
3270 $sig = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
3273 "guid" => $item["guid"],
3274 "parent_guid" => $cnv["guid"],
3275 "parent_author_signature" => $sig,
3276 "author_signature" => $sig,
3278 "created_at" => $created,
3279 "diaspora_handle" => $myaddr,
3280 "conversation_guid" => $cnv["guid"]
3283 if ($item["reply"]) {
3287 $message = array("guid" => $cnv["guid"],
3288 "subject" => $cnv["subject"],
3289 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
3291 "diaspora_handle" => $cnv["creator"],
3292 "participant_handles" => $cnv["recips"]);
3294 $type = "conversation";
3297 return self::build_and_transmit($owner, $contact, $type, $message, false, $item["guid"]);
3301 * @brief Sends profile data
3303 * @param int $uid The user id
3305 public static function send_profile($uid, $recips = false) {
3311 $recips = q("SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
3312 AND `uid` = %d AND `rel` != %d",
3313 dbesc(NETWORK_DIASPORA),
3315 intval(CONTACT_IS_SHARING)
3320 $r = q("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
3322 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
3323 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
3324 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
3333 $handle = $profile["addr"];
3334 $first = ((strpos($profile['name'],' ')
3335 ? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']));
3336 $last = (($first === $profile['name']) ? '' : trim(substr($profile['name'], strlen($first))));
3337 $large = App::get_baseurl().'/photo/custom/300/'.$profile['uid'].'.jpg';
3338 $medium = App::get_baseurl().'/photo/custom/100/'.$profile['uid'].'.jpg';
3339 $small = App::get_baseurl().'/photo/custom/50/' .$profile['uid'].'.jpg';
3340 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
3342 if ($searchable === 'true') {
3343 $dob = '1000-00-00';
3345 if (($profile['dob']) && ($profile['dob'] != '0000-00-00'))
3346 $dob = ((intval($profile['dob'])) ? intval($profile['dob']) : '1000') .'-'. datetime_convert('UTC','UTC',$profile['dob'],'m-d');
3348 $about = $profile['about'];
3349 $about = strip_tags(bbcode($about));
3351 $location = formatted_location($profile);
3353 if ($profile['pub_keywords']) {
3354 $kw = str_replace(',',' ',$profile['pub_keywords']);
3355 $kw = str_replace(' ',' ',$kw);
3356 $arr = explode(' ',$profile['pub_keywords']);
3358 for($x = 0; $x < 5; $x ++) {
3360 $tags .= '#'. trim($arr[$x]) .' ';
3364 $tags = trim($tags);
3367 $message = array("diaspora_handle" => $handle,
3368 "first_name" => $first,
3369 "last_name" => $last,
3370 "image_url" => $large,
3371 "image_url_medium" => $medium,
3372 "image_url_small" => $small,
3374 "gender" => $profile['gender'],
3376 "location" => $location,
3377 "searchable" => $searchable,
3378 "tag_string" => $tags);
3380 foreach($recips as $recip) {
3381 logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
3382 self::build_and_transmit($profile, $recip, "profile", $message, false, "", true);
3387 * @brief Stores the signature for likes that are created on our system
3389 * @param array $contact The contact array of the "like"
3390 * @param int $post_id The post id of the "like"
3392 * @return bool Success
3394 public static function store_like_signature($contact, $post_id) {
3396 // Is the contact the owner? Then fetch the private key
3397 if (!$contact['self'] OR ($contact['uid'] == 0)) {
3398 logger("No owner post, so not storing signature", LOGGER_DEBUG);
3402 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
3406 $contact["uprvkey"] = $r[0]['prvkey'];
3408 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
3412 if (!in_array($r[0]["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE)))
3415 $message = self::construct_like($r[0], $contact);
3416 $message["author_signature"] = self::signature($contact, $message);
3418 // In the future we will store the signature more flexible to support new fields.
3419 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3420 // (We are transmitting this data here via DFRN)
3422 $signed_text = $message["positive"].";".$message["guid"].";".$message["target_type"].";".
3423 $message["parent_guid"].";".$message["diaspora_handle"];
3425 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3427 dbesc($signed_text),
3428 dbesc($message["author_signature"]),
3429 dbesc($message["diaspora_handle"])
3432 // This here will replace the lines above, once Diaspora changed its protocol
3433 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3434 // intval($message_id),
3435 // dbesc(json_encode($message))
3438 logger('Stored diaspora like signature');
3443 * @brief Stores the signature for comments that are created on our system
3445 * @param array $item The item array of the comment
3446 * @param array $contact The contact array of the item owner
3447 * @param string $uprvkey The private key of the sender
3448 * @param int $message_id The message id of the comment
3450 * @return bool Success
3452 public static function store_comment_signature($item, $contact, $uprvkey, $message_id) {
3454 if ($uprvkey == "") {
3455 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
3459 $contact["uprvkey"] = $uprvkey;
3461 $message = self::construct_comment($item, $contact);
3462 $message["author_signature"] = self::signature($contact, $message);
3464 // In the future we will store the signature more flexible to support new fields.
3465 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3466 // (We are transmitting this data here via DFRN)
3467 $signed_text = $message["guid"].";".$message["parent_guid"].";".
3468 $message["text"].";".$message["diaspora_handle"];
3470 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3471 intval($message_id),
3472 dbesc($signed_text),
3473 dbesc($message["author_signature"]),
3474 dbesc($message["diaspora_handle"])
3477 // This here will replace the lines above, once Diaspora changed its protocol
3478 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3479 // intval($message_id),
3480 // dbesc(json_encode($message))
3483 logger('Stored diaspora comment signature');