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");
21 require_once("include/cache.php");
24 * @brief This class contain functions to create and send Diaspora XML files
30 * @brief Return a list of relay servers
32 * This is an experimental Diaspora feature.
34 * @return array of relay servers
36 public static function relay_list() {
38 $serverdata = get_config("system", "relay_server");
39 if ($serverdata == "")
44 $servers = explode(",", $serverdata);
46 foreach($servers AS $server) {
47 $server = trim($server);
48 $batch = $server."/receive/public";
50 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
53 $addr = "relay@".str_replace("http://", "", normalise_link($server));
55 $r = q("INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
56 VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
61 dbesc(normalise_link($server)),
63 dbesc(NETWORK_DIASPORA),
64 intval(CONTACT_IS_FOLLOWER),
65 dbesc(datetime_convert()),
66 dbesc(datetime_convert()),
67 dbesc(datetime_convert())
70 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
72 $relay[] = $relais[0];
74 $relay[] = $relais[0];
81 * @brief repairs a signature that was double encoded
83 * The function is unused at the moment. It was copied from the old implementation.
85 * @param string $signature The signature
86 * @param string $handle The handle of the signature owner
87 * @param integer $level This value is only set inside this function to avoid endless loops
89 * @return string the repaired signature
91 private static function repair_signature($signature, $handle = "", $level = 1) {
96 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
97 $signature = base64_decode($signature);
98 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
100 // Do a recursive call to be able to fix even multiple levels
102 $signature = self::repair_signature($signature, $handle, ++$level);
109 * @brief verify the envelope and return the verified data
111 * @param string $envelope The magic envelope
113 * @return string verified data
115 private static function verify_magic_envelope($envelope) {
117 $basedom = parse_xml_string($envelope, false);
119 if (!is_object($basedom)) {
120 logger("Envelope is no XML file");
124 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
126 if (sizeof($children) == 0) {
127 logger("XML has no children");
133 $data = base64url_decode($children->data);
134 $type = $children->data->attributes()->type[0];
136 $encoding = $children->encoding;
138 $alg = $children->alg;
140 $sig = base64url_decode($children->sig);
141 $key_id = $children->sig->attributes()->key_id[0];
143 $handle = base64url_decode($key_id);
145 $b64url_data = base64url_encode($data);
146 $msg = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
148 $signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
150 $key = self::key($handle);
152 $verify = rsa_verify($signable_data, $sig, $key);
154 logger('Message did not verify. Discarding.');
162 * @brief: Decodes incoming Diaspora message
164 * @param array $importer Array of the importer user
165 * @param string $xml urldecoded Diaspora salmon
168 * 'message' -> decoded Diaspora XML message
169 * 'author' -> author diaspora handle
170 * 'key' -> author public key (converted to pkcs#8)
172 public static function decode($importer, $xml) {
175 $basedom = parse_xml_string($xml);
177 if (!is_object($basedom))
180 $children = $basedom->children('https://joindiaspora.com/protocol');
182 if($children->header) {
184 $author_link = str_replace('acct:','',$children->header->author_id);
187 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
189 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
190 $ciphertext = base64_decode($encrypted_header->ciphertext);
192 $outer_key_bundle = '';
193 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
195 $j_outer_key_bundle = json_decode($outer_key_bundle);
197 $outer_iv = base64_decode($j_outer_key_bundle->iv);
198 $outer_key = base64_decode($j_outer_key_bundle->key);
200 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
203 $decrypted = pkcs5_unpad($decrypted);
205 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
206 $idom = parse_xml_string($decrypted,false);
208 $inner_iv = base64_decode($idom->iv);
209 $inner_aes_key = base64_decode($idom->aes_key);
211 $author_link = str_replace('acct:','',$idom->author_id);
214 $dom = $basedom->children(NAMESPACE_SALMON_ME);
216 // figure out where in the DOM tree our data is hiding
218 if($dom->provenance->data)
219 $base = $dom->provenance;
220 elseif($dom->env->data)
226 logger('unable to locate salmon data in xml');
227 http_status_exit(400);
231 // Stash the signature away for now. We have to find their key or it won't be good for anything.
232 $signature = base64url_decode($base->sig);
236 // strip whitespace so our data element will return to one big base64 blob
237 $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
240 // stash away some other stuff for later
242 $type = $base->data[0]->attributes()->type[0];
243 $keyhash = $base->sig[0]->attributes()->keyhash[0];
244 $encoding = $base->encoding;
248 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
252 $data = base64url_decode($data);
256 $inner_decrypted = $data;
259 // Decode the encrypted blob
261 $inner_encrypted = base64_decode($data);
262 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
263 $inner_decrypted = pkcs5_unpad($inner_decrypted);
267 logger('Could not retrieve author URI.');
268 http_status_exit(400);
270 // Once we have the author URI, go to the web and try to find their public key
271 // (first this will look it up locally if it is in the fcontact cache)
272 // This will also convert diaspora public key from pkcs#1 to pkcs#8
274 logger('Fetching key for '.$author_link);
275 $key = self::key($author_link);
278 logger('Could not retrieve author key.');
279 http_status_exit(400);
282 $verify = rsa_verify($signed_data,$signature,$key);
285 logger('Message did not verify. Discarding.');
286 http_status_exit(400);
289 logger('Message verified.');
291 return array('message' => (string)$inner_decrypted,
292 'author' => unxmlify($author_link),
293 'key' => (string)$key);
298 * @brief Dispatches public messages and find the fitting receivers
300 * @param array $msg The post that will be dispatched
302 * @return int The message id of the generated message, "true" or "false" if there was an error
304 public static function dispatch_public($msg) {
306 $enabled = intval(get_config("system", "diaspora_enabled"));
308 logger("diaspora is disabled");
312 // Use a dummy importer to import the data for the public copy
313 $importer = array("uid" => 0, "page-flags" => PAGE_FREELOVE);
314 $message_id = self::dispatch($importer,$msg);
316 // Now distribute it to the followers
317 $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
318 (SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
319 AND NOT `account_expired` AND NOT `account_removed`",
320 dbesc(NETWORK_DIASPORA),
321 dbesc($msg["author"])
324 foreach ($r as $rr) {
325 logger("delivering to: ".$rr["username"]);
326 self::dispatch($rr,$msg);
329 logger("No subscribers for ".$msg["author"]." ".print_r($msg, true));
335 * @brief Dispatches the different message types to the different functions
337 * @param array $importer Array of the importer user
338 * @param array $msg The post that will be dispatched
340 * @return int The message id of the generated message, "true" or "false" if there was an error
342 public static function dispatch($importer, $msg) {
344 // The sender is the handle of the contact that sent the message.
345 // This will often be different with relayed messages (for example "like" and "comment")
346 $sender = $msg["author"];
348 if (!self::valid_posting($msg, $fields)) {
349 logger("Invalid posting");
353 $type = $fields->getName();
355 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
358 case "account_deletion":
359 return self::receive_account_deletion($importer, $fields);
362 return self::receive_comment($importer, $sender, $fields, $msg["message"]);
365 return self::receive_contact_request($importer, $fields);
368 return self::receive_conversation($importer, $msg, $fields);
371 return self::receive_like($importer, $sender, $fields);
374 return self::receive_message($importer, $fields);
376 case "participation": // Not implemented
377 return self::receive_participation($importer, $fields);
379 case "photo": // Not implemented
380 return self::receive_photo($importer, $fields);
382 case "poll_participation": // Not implemented
383 return self::receive_poll_participation($importer, $fields);
386 return self::receive_profile($importer, $fields);
389 return self::receive_reshare($importer, $fields, $msg["message"]);
392 return self::receive_retraction($importer, $sender, $fields);
394 case "status_message":
395 return self::receive_status_message($importer, $fields, $msg["message"]);
398 logger("Unknown message type ".$type);
406 * @brief Checks if a posting is valid and fetches the data fields.
408 * This function does not only check the signature.
409 * It also does the conversion between the old and the new diaspora format.
411 * @param array $msg Array with the XML, the sender handle and the sender signature
412 * @param object $fields SimpleXML object that contains the posting when it is valid
414 * @return bool Is the posting valid?
416 private static function valid_posting($msg, &$fields) {
418 $data = parse_xml_string($msg["message"], false);
420 if (!is_object($data)) {
421 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
425 $first_child = $data->getName();
427 // Is this the new or the old version?
428 if ($data->getName() == "XML") {
430 foreach ($data->post->children() as $child)
437 $type = $element->getName();
440 logger("Got message type ".$type.": ".$msg["message"], LOGGER_DATA);
442 // All retractions are handled identically from now on.
443 // In the new version there will only be "retraction".
444 if (in_array($type, array("signed_retraction", "relayable_retraction")))
445 $type = "retraction";
447 if ($type == "request")
450 $fields = new SimpleXMLElement("<".$type."/>");
454 foreach ($element->children() AS $fieldname => $entry) {
456 // Translation for the old XML structure
457 if ($fieldname == "diaspora_handle")
458 $fieldname = "author";
460 if ($fieldname == "participant_handles")
461 $fieldname = "participants";
463 if (in_array($type, array("like", "participation"))) {
464 if ($fieldname == "target_type")
465 $fieldname = "parent_type";
468 if ($fieldname == "sender_handle")
469 $fieldname = "author";
471 if ($fieldname == "recipient_handle")
472 $fieldname = "recipient";
474 if ($fieldname == "root_diaspora_id")
475 $fieldname = "root_author";
477 if ($type == "retraction") {
478 if ($fieldname == "post_guid")
479 $fieldname = "target_guid";
481 if ($fieldname == "type")
482 $fieldname = "target_type";
486 if (($fieldname == "author_signature") AND ($entry != ""))
487 $author_signature = base64_decode($entry);
488 elseif (($fieldname == "parent_author_signature") AND ($entry != ""))
489 $parent_author_signature = base64_decode($entry);
490 elseif (!in_array($fieldname, array("author_signature", "parent_author_signature", "target_author_signature"))) {
491 if ($signed_data != "") {
493 $signed_data_parent .= ";";
496 $signed_data .= $entry;
498 if (!in_array($fieldname, array("parent_author_signature", "target_author_signature")) OR
499 ($orig_type == "relayable_retraction"))
500 xml::copy($entry, $fields, $fieldname);
503 // This is something that shouldn't happen at all.
504 if (in_array($type, array("status_message", "reshare", "profile")))
505 if ($msg["author"] != $fields->author) {
506 logger("Message handle is not the same as envelope sender. Quitting this message.");
510 // Only some message types have signatures. So we quit here for the other types.
511 if (!in_array($type, array("comment", "message", "like")))
514 // No author_signature? This is a must, so we quit.
515 if (!isset($author_signature)) {
516 logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
520 if (isset($parent_author_signature)) {
521 $key = self::key($msg["author"]);
523 if (!rsa_verify($signed_data, $parent_author_signature, $key, "sha256")) {
524 logger("No valid parent author signature for parent author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
529 $key = self::key($fields->author);
531 if (!rsa_verify($signed_data, $author_signature, $key, "sha256")) {
532 logger("No valid author signature for author ".$fields->author. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
539 * @brief Fetches the public key for a given handle
541 * @param string $handle The handle
543 * @return string The public key
545 private static function key($handle) {
546 $handle = strval($handle);
548 logger("Fetching diaspora key for: ".$handle);
550 $r = self::person_by_handle($handle);
558 * @brief Fetches data for a given handle
560 * @param string $handle The handle
562 * @return array the queried data
564 private static function person_by_handle($handle) {
566 $r = q("SELECT * FROM `fcontact` WHERE `network` = '%s' AND `addr` = '%s' LIMIT 1",
567 dbesc(NETWORK_DIASPORA),
572 logger("In cache ".print_r($r,true), LOGGER_DEBUG);
574 // update record occasionally so it doesn't get stale
575 $d = strtotime($person["updated"]." +00:00");
576 if ($d < strtotime("now - 14 days"))
579 if ($person["guid"] == "")
583 if (!$person OR $update) {
584 logger("create or refresh", LOGGER_DEBUG);
585 $r = probe_url($handle, PROBE_DIASPORA);
587 // Note that Friendica contacts will return a "Diaspora person"
588 // if Diaspora connectivity is enabled on their server
589 if ($r AND ($r["network"] === NETWORK_DIASPORA)) {
590 self::add_fcontact($r, $update);
598 * @brief Updates the fcontact table
600 * @param array $arr The fcontact data
601 * @param bool $update Update or insert?
603 * @return string The id of the fcontact entry
605 private static function add_fcontact($arr, $update = false) {
608 $r = q("UPDATE `fcontact` SET
622 WHERE `url` = '%s' AND `network` = '%s'",
624 dbesc($arr["photo"]),
625 dbesc($arr["request"]),
627 dbesc(strtolower($arr["addr"])),
629 dbesc($arr["batch"]),
630 dbesc($arr["notify"]),
632 dbesc($arr["confirm"]),
633 dbesc($arr["alias"]),
634 dbesc($arr["pubkey"]),
635 dbesc(datetime_convert()),
637 dbesc($arr["network"])
640 $r = q("INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`, `guid`,
641 `batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
642 VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
645 dbesc($arr["photo"]),
646 dbesc($arr["request"]),
650 dbesc($arr["batch"]),
651 dbesc($arr["notify"]),
653 dbesc($arr["confirm"]),
654 dbesc($arr["network"]),
655 dbesc($arr["alias"]),
656 dbesc($arr["pubkey"]),
657 dbesc(datetime_convert())
665 * @brief get a handle (user@domain.tld) from a given contact id or gcontact id
667 * @param int $contact_id The id in the contact table
668 * @param int $gcontact_id The id in the gcontact table
670 * @return string the handle
672 public static function handle_from_contact($contact_id, $gcontact_id = 0) {
675 logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
677 if ($gcontact_id != 0) {
678 $r = q("SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
679 intval($gcontact_id));
681 if (dbm::is_result($r)) {
682 return strtolower($r[0]["addr"]);
686 $r = q("SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
687 intval($contact_id));
689 if (dbm::is_result($r)) {
692 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
694 if ($contact['addr'] != "") {
695 $handle = $contact['addr'];
697 $baseurl_start = strpos($contact['url'],'://') + 3;
698 $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
699 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
700 $handle = $contact['nick'].'@'.$baseurl;
704 return strtolower($handle);
708 * @brief get a url (scheme://domain.tld/u/user) from a given Diaspora*
711 * @param mixed $fcontact_guid Hexadecimal string guid
713 * @return string the contact url or null
715 public static function url_from_contact_guid($fcontact_guid) {
716 logger("fcontact guid is ".$fcontact_guid, LOGGER_DEBUG);
718 $r = q("SELECT `url` FROM `fcontact` WHERE `url` != '' AND `network` = '%s' AND `guid` = '%s'",
719 dbesc(NETWORK_DIASPORA),
720 dbesc($fcontact_guid)
723 if (dbm::is_result($r)) {
731 * @brief Get a contact id for a given handle
733 * @param int $uid The user id
734 * @param string $handle The handle in the format user@domain.tld
736 * @return The contact id
738 private static function contact_by_handle($uid, $handle) {
739 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
747 $handle_parts = explode("@", $handle);
748 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
749 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
761 * @brief Check if posting is allowed for this contact
763 * @param array $importer Array of the importer user
764 * @param array $contact The contact that is checked
765 * @param bool $is_comment Is the check for a comment?
767 * @return bool is the contact allowed to post?
769 private static function post_allow($importer, $contact, $is_comment = false) {
771 // perhaps we were already sharing with this person. Now they're sharing with us.
772 // That makes us friends.
773 // Normally this should have handled by getting a request - but this could get lost
774 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
775 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
776 intval(CONTACT_IS_FRIEND),
777 intval($contact["id"]),
778 intval($importer["uid"])
780 $contact["rel"] = CONTACT_IS_FRIEND;
781 logger("defining user ".$contact["nick"]." as friend");
784 if(($contact["blocked"]) || ($contact["readonly"]) || ($contact["archive"]))
786 if($contact["rel"] == CONTACT_IS_SHARING || $contact["rel"] == CONTACT_IS_FRIEND)
788 if($contact["rel"] == CONTACT_IS_FOLLOWER)
789 if(($importer["page-flags"] == PAGE_COMMUNITY) OR $is_comment)
792 // Messages for the global users are always accepted
793 if ($importer["uid"] == 0)
800 * @brief Fetches the contact id for a handle and checks if posting is allowed
802 * @param array $importer Array of the importer user
803 * @param string $handle The checked handle in the format user@domain.tld
804 * @param bool $is_comment Is the check for a comment?
806 * @return array The contact data
808 private static function allowed_contact_by_handle($importer, $handle, $is_comment = false) {
809 $contact = self::contact_by_handle($importer["uid"], $handle);
811 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
815 if (!self::post_allow($importer, $contact, $is_comment)) {
816 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
823 * @brief Does the message already exists on the system?
825 * @param int $uid The user id
826 * @param string $guid The guid of the message
828 * @return int|bool message id if the message already was stored into the system - or false.
830 private static function message_exists($uid, $guid) {
831 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
837 logger("message ".$guid." already exists for user ".$uid);
845 * @brief Checks for links to posts in a message
847 * @param array $item The item array
849 private static function fetch_guid($item) {
850 preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
851 function ($match) use ($item){
852 return(self::fetch_guid_sub($match, $item));
857 * @brief Checks for relative /people/* links in an item body to match local
858 * contacts or prepends the remote host taken from the author link.
860 * @param string $body The item body to replace links from
861 * @param string $author_link The author link for missing local contact fallback
863 * @return the replaced string
865 public function replace_people_guid($body, $author_link) {
866 $return = preg_replace_callback("&\[url=/people/([^\[\]]*)\](.*)\[\/url\]&Usi",
867 function ($match) use ($author_link) {
869 // 0 => '[url=/people/0123456789abcdef]Foo Bar[/url]'
870 // 1 => '0123456789abcdef'
872 $handle = self::url_from_contact_guid($match[1]);
875 $return = '@[url='.$handle.']'.$match[2].'[/url]';
877 // No local match, restoring absolute remote URL from author scheme and host
878 $author_url = parse_url($author_link);
879 $return = '[url='.$author_url['scheme'].'://'.$author_url['host'].'/people/'.$match[1].']'.$match[2].'[/url]';
889 * @brief sub function of "fetch_guid" which checks for links in messages
891 * @param array $match array containing a link that has to be checked for a message link
892 * @param array $item The item array
894 private static function fetch_guid_sub($match, $item) {
895 if (!self::store_by_guid($match[1], $item["author-link"]))
896 self::store_by_guid($match[1], $item["owner-link"]);
900 * @brief Fetches an item with a given guid from a given server
902 * @param string $guid the message guid
903 * @param string $server The server address
904 * @param int $uid The user id of the user
906 * @return int the message id of the stored message or false
908 private static function store_by_guid($guid, $server, $uid = 0) {
909 $serverparts = parse_url($server);
910 $server = $serverparts["scheme"]."://".$serverparts["host"];
912 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
914 $msg = self::message($guid, $server);
919 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
921 // Now call the dispatcher
922 return self::dispatch_public($msg);
926 * @brief Fetches a message from a server
928 * @param string $guid message guid
929 * @param string $server The url of the server
930 * @param int $level Endless loop prevention
933 * 'message' => The message XML
934 * 'author' => The author handle
935 * 'key' => The public key of the author
937 private static function message($guid, $server, $level = 0) {
942 // This will work for new Diaspora servers and Friendica servers from 3.5
943 $source_url = $server."/fetch/post/".$guid;
944 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
946 $envelope = fetch_url($source_url);
948 logger("Envelope was fetched.", LOGGER_DEBUG);
949 $x = self::verify_magic_envelope($envelope);
951 logger("Envelope could not be verified.", LOGGER_DEBUG);
953 logger("Envelope was verified.", LOGGER_DEBUG);
957 // This will work for older Diaspora and Friendica servers
959 $source_url = $server."/p/".$guid.".xml";
960 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
962 $x = fetch_url($source_url);
967 $source_xml = parse_xml_string($x, false);
969 if (!is_object($source_xml))
972 if ($source_xml->post->reshare) {
973 // Reshare of a reshare - old Diaspora version
974 logger("Message is a reshare", LOGGER_DEBUG);
975 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
976 } elseif ($source_xml->getName() == "reshare") {
977 // Reshare of a reshare - new Diaspora version
978 logger("Message is a new reshare", LOGGER_DEBUG);
979 return self::message($source_xml->root_guid, $server, ++$level);
984 // Fetch the author - for the old and the new Diaspora version
985 if ($source_xml->post->status_message->diaspora_handle)
986 $author = (string)$source_xml->post->status_message->diaspora_handle;
987 elseif ($source_xml->author AND ($source_xml->getName() == "status_message"))
988 $author = (string)$source_xml->author;
990 // If this isn't a "status_message" then quit
992 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
996 $msg = array("message" => $x, "author" => $author);
998 $msg["key"] = self::key($msg["author"]);
1004 * @brief Fetches the item record of a given guid
1006 * @param int $uid The user id
1007 * @param string $guid message guid
1008 * @param string $author The handle of the item
1009 * @param array $contact The contact of the item owner
1011 * @return array the item record
1013 private static function parent_item($uid, $guid, $author, $contact) {
1014 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1015 `author-name`, `author-link`, `author-avatar`,
1016 `owner-name`, `owner-link`, `owner-avatar`
1017 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1018 intval($uid), dbesc($guid));
1021 $result = self::store_by_guid($guid, $contact["url"], $uid);
1024 $person = self::person_by_handle($author);
1025 $result = self::store_by_guid($guid, $person["url"], $uid);
1029 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
1031 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
1032 `author-name`, `author-link`, `author-avatar`,
1033 `owner-name`, `owner-link`, `owner-avatar`
1034 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1035 intval($uid), dbesc($guid));
1040 logger("parent item not found: parent: ".$guid." - user: ".$uid);
1043 logger("parent item found: parent: ".$guid." - user: ".$uid);
1049 * @brief returns contact details
1051 * @param array $contact The default contact if the person isn't found
1052 * @param array $person The record of the person
1053 * @param int $uid The user id
1056 * 'cid' => contact id
1057 * 'network' => network type
1059 private static function author_contact_by_url($contact, $person, $uid) {
1061 $r = q("SELECT `id`, `network`, `url` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
1062 dbesc(normalise_link($person["url"])), intval($uid));
1065 $network = $r[0]["network"];
1067 // We are receiving content from a user that is about to be terminated
1068 // This means the user is vital, so we remove a possible termination date.
1069 unmark_for_death($contact);
1071 $cid = $contact["id"];
1072 $network = NETWORK_DIASPORA;
1075 return array("cid" => $cid, "network" => $network);
1079 * @brief Is the profile a hubzilla profile?
1081 * @param string $url The profile link
1083 * @return bool is it a hubzilla server?
1085 public static function is_redmatrix($url) {
1086 return(strstr($url, "/channel/"));
1090 * @brief Generate a post link with a given handle and message guid
1092 * @param string $addr The user handle
1093 * @param string $guid message guid
1095 * @return string the post link
1097 private static function plink($addr, $guid) {
1098 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
1102 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1104 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
1105 // So we try another way as well.
1106 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
1108 $r[0]["network"] = $s[0]["network"];
1110 if ($r[0]["network"] == NETWORK_DFRN)
1111 return(str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/"));
1113 if (self::is_redmatrix($r[0]["url"]))
1114 return $r[0]["url"]."/?f=&mid=".$guid;
1116 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1120 * @brief Processes an account deletion
1122 * @param array $importer Array of the importer user
1123 * @param object $data The message object
1125 * @return bool Success
1127 private static function receive_account_deletion($importer, $data) {
1129 /// @todo Account deletion should remove the contact from the global contacts as well
1131 $author = notags(unxmlify($data->author));
1133 $contact = self::contact_by_handle($importer["uid"], $author);
1135 logger("cannot find contact for author: ".$author);
1139 // We now remove the contact
1140 contact_remove($contact["id"]);
1145 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1147 * @param string $author Author handle
1148 * @param string $guid Message guid
1149 * @param boolean $onlyfound Only return uri when found in the database
1151 * @return string The constructed uri or the one from our database
1153 private static function get_uri_from_guid($author, $guid, $onlyfound = false) {
1155 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1156 if (dbm::is_result($r)) {
1157 return $r[0]["uri"];
1158 } elseif (!$onlyfound) {
1159 return $author.":".$guid;
1166 * @brief Fetch the guid from our database with a given uri
1168 * @param string $author Author handle
1169 * @param string $uri Message uri
1171 * @return string The post guid
1173 private static function get_guid_from_uri($uri, $uid) {
1175 $r = q("SELECT `guid` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1", dbesc($uri), intval($uid));
1176 if (dbm::is_result($r)) {
1177 return $r[0]["guid"];
1184 * @brief Processes an incoming comment
1186 * @param array $importer Array of the importer user
1187 * @param string $sender The sender of the message
1188 * @param object $data The message object
1189 * @param string $xml The original XML of the message
1191 * @return int The message id of the generated comment or "false" if there was an error
1193 private static function receive_comment($importer, $sender, $data, $xml) {
1194 $guid = notags(unxmlify($data->guid));
1195 $parent_guid = notags(unxmlify($data->parent_guid));
1196 $text = unxmlify($data->text);
1197 $author = notags(unxmlify($data->author));
1199 if (isset($data->created_at)) {
1200 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1202 $created_at = datetime_convert();
1205 if (isset($data->thread_parent_guid)) {
1206 $thread_parent_guid = notags(unxmlify($data->thread_parent_guid));
1207 $thr_uri = self::get_uri_from_guid("", $thread_parent_guid, true);
1212 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1217 $message_id = self::message_exists($importer["uid"], $guid);
1222 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1223 if (!$parent_item) {
1227 $person = self::person_by_handle($author);
1228 if (!is_array($person)) {
1229 logger("unable to find author details");
1233 // Fetch the contact id - if we know this contact
1234 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1236 $datarray = array();
1238 $datarray["uid"] = $importer["uid"];
1239 $datarray["contact-id"] = $author_contact["cid"];
1240 $datarray["network"] = $author_contact["network"];
1242 $datarray["author-name"] = $person["name"];
1243 $datarray["author-link"] = $person["url"];
1244 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1246 $datarray["owner-name"] = $contact["name"];
1247 $datarray["owner-link"] = $contact["url"];
1248 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1250 $datarray["guid"] = $guid;
1251 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1253 $datarray["type"] = "remote-comment";
1254 $datarray["verb"] = ACTIVITY_POST;
1255 $datarray["gravity"] = GRAVITY_COMMENT;
1257 if ($thr_uri != "") {
1258 $datarray["parent-uri"] = $thr_uri;
1260 $datarray["parent-uri"] = $parent_item["uri"];
1263 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1264 $datarray["object"] = $xml;
1266 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
1268 $body = diaspora2bb($text);
1270 $datarray["body"] = self::replace_people_guid($body, $person["url"]);
1272 self::fetch_guid($datarray);
1274 $message_id = item_store($datarray);
1277 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1280 // If we are the origin of the parent we store the original data and notify our followers
1281 if($message_id AND $parent_item["origin"]) {
1283 // Formerly we stored the signed text, the signature and the author in different fields.
1284 // We now store the raw data so that we are more flexible.
1285 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1286 intval($message_id),
1287 dbesc(json_encode($data))
1291 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1298 * @brief processes and stores private messages
1300 * @param array $importer Array of the importer user
1301 * @param array $contact The contact of the message
1302 * @param object $data The message object
1303 * @param array $msg Array of the processed message, author handle and key
1304 * @param object $mesg The private message
1305 * @param array $conversation The conversation record to which this message belongs
1307 * @return bool "true" if it was successful
1309 private static function receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation) {
1310 $guid = notags(unxmlify($data->guid));
1311 $subject = notags(unxmlify($data->subject));
1312 $author = notags(unxmlify($data->author));
1314 $msg_guid = notags(unxmlify($mesg->guid));
1315 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1316 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1317 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1318 $msg_text = unxmlify($mesg->text);
1319 $msg_created_at = datetime_convert("UTC", "UTC", notags(unxmlify($mesg->created_at)));
1321 // "diaspora_handle" is the element name from the old version
1322 // "author" is the element name from the new version
1323 if ($mesg->author) {
1324 $msg_author = notags(unxmlify($mesg->author));
1325 } elseif ($mesg->diaspora_handle) {
1326 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1331 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1333 if ($msg_conversation_guid != $guid) {
1334 logger("message conversation guid does not belong to the current conversation.");
1338 $body = diaspora2bb($msg_text);
1339 $message_uri = $msg_author.":".$msg_guid;
1341 $author_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1343 $author_signature = base64_decode($msg_author_signature);
1345 if (strcasecmp($msg_author,$msg["author"]) == 0) {
1349 $person = self::person_by_handle($msg_author);
1351 if (is_array($person) && x($person, "pubkey")) {
1352 $key = $person["pubkey"];
1354 logger("unable to find author details");
1359 if (!rsa_verify($author_signed_data, $author_signature, $key, "sha256")) {
1360 logger("verification failed.");
1364 if ($msg_parent_author_signature) {
1365 $owner_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1367 $parent_author_signature = base64_decode($msg_parent_author_signature);
1371 if (!rsa_verify($owner_signed_data, $parent_author_signature, $key, "sha256")) {
1372 logger("owner verification failed.");
1377 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' LIMIT 1",
1380 if (dbm::is_result($r)) {
1381 logger("duplicate message already delivered.", LOGGER_DEBUG);
1385 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1386 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1387 intval($importer["uid"]),
1389 intval($conversation["id"]),
1390 dbesc($person["name"]),
1391 dbesc($person["photo"]),
1392 dbesc($person["url"]),
1393 intval($contact["id"]),
1398 dbesc($message_uri),
1399 dbesc($author.":".$guid),
1400 dbesc($msg_created_at)
1403 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1404 dbesc(datetime_convert()),
1405 intval($conversation["id"])
1409 "type" => NOTIFY_MAIL,
1410 "notify_flags" => $importer["notify-flags"],
1411 "language" => $importer["language"],
1412 "to_name" => $importer["username"],
1413 "to_email" => $importer["email"],
1414 "uid" =>$importer["uid"],
1415 "item" => array("subject" => $subject, "body" => $body),
1416 "source_name" => $person["name"],
1417 "source_link" => $person["url"],
1418 "source_photo" => $person["thumb"],
1419 "verb" => ACTIVITY_POST,
1426 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1428 * @param array $importer Array of the importer user
1429 * @param array $msg Array of the processed message, author handle and key
1430 * @param object $data The message object
1432 * @return bool Success
1434 private static function receive_conversation($importer, $msg, $data) {
1435 $guid = notags(unxmlify($data->guid));
1436 $subject = notags(unxmlify($data->subject));
1437 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1438 $author = notags(unxmlify($data->author));
1439 $participants = notags(unxmlify($data->participants));
1441 $messages = $data->message;
1443 if (!count($messages)) {
1444 logger("empty conversation");
1448 $contact = self::allowed_contact_by_handle($importer, $msg["author"], true);
1452 $conversation = null;
1454 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1455 intval($importer["uid"]),
1459 $conversation = $c[0];
1461 $r = q("INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1462 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1463 intval($importer["uid"]),
1467 dbesc(datetime_convert()),
1469 dbesc($participants)
1472 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1473 intval($importer["uid"]),
1478 $conversation = $c[0];
1480 if (!$conversation) {
1481 logger("unable to create conversation.");
1485 foreach($messages as $mesg)
1486 self::receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation);
1492 * @brief Creates the body for a "like" message
1494 * @param array $contact The contact that send us the "like"
1495 * @param array $parent_item The item array of the parent item
1496 * @param string $guid message guid
1498 * @return string the body
1500 private static function construct_like_body($contact, $parent_item, $guid) {
1501 $bodyverb = t('%1$s likes %2$s\'s %3$s');
1503 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1504 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1505 $plink = "[url=".App::get_baseurl()."/display/".urlencode($guid)."]".t("status")."[/url]";
1507 return sprintf($bodyverb, $ulink, $alink, $plink);
1511 * @brief Creates a XML object for a "like"
1513 * @param array $importer Array of the importer user
1514 * @param array $parent_item The item array of the parent item
1516 * @return string The XML
1518 private static function construct_like_object($importer, $parent_item) {
1519 $objtype = ACTIVITY_OBJ_NOTE;
1520 $link = '<link rel="alternate" type="text/html" href="'.App::get_baseurl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1521 $parent_body = $parent_item["body"];
1523 $xmldata = array("object" => array("type" => $objtype,
1525 "id" => $parent_item["uri"],
1528 "content" => $parent_body));
1530 return xml::from_array($xmldata, $xml, true);
1534 * @brief Processes "like" messages
1536 * @param array $importer Array of the importer user
1537 * @param string $sender The sender of the message
1538 * @param object $data The message object
1540 * @return int The message id of the generated like or "false" if there was an error
1542 private static function receive_like($importer, $sender, $data) {
1543 $positive = notags(unxmlify($data->positive));
1544 $guid = notags(unxmlify($data->guid));
1545 $parent_type = notags(unxmlify($data->parent_type));
1546 $parent_guid = notags(unxmlify($data->parent_guid));
1547 $author = notags(unxmlify($data->author));
1549 // likes on comments aren't supported by Diaspora - only on posts
1550 // But maybe this will be supported in the future, so we will accept it.
1551 if (!in_array($parent_type, array("Post", "Comment")))
1554 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1558 $message_id = self::message_exists($importer["uid"], $guid);
1562 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1566 $person = self::person_by_handle($author);
1567 if (!is_array($person)) {
1568 logger("unable to find author details");
1572 // Fetch the contact id - if we know this contact
1573 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1575 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
1576 // We would accept this anyhow.
1577 if ($positive == "true")
1578 $verb = ACTIVITY_LIKE;
1580 $verb = ACTIVITY_DISLIKE;
1582 $datarray = array();
1584 $datarray["uid"] = $importer["uid"];
1585 $datarray["contact-id"] = $author_contact["cid"];
1586 $datarray["network"] = $author_contact["network"];
1588 $datarray["author-name"] = $person["name"];
1589 $datarray["author-link"] = $person["url"];
1590 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1592 $datarray["owner-name"] = $contact["name"];
1593 $datarray["owner-link"] = $contact["url"];
1594 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1596 $datarray["guid"] = $guid;
1597 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1599 $datarray["type"] = "activity";
1600 $datarray["verb"] = $verb;
1601 $datarray["gravity"] = GRAVITY_LIKE;
1602 $datarray["parent-uri"] = $parent_item["uri"];
1604 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
1605 $datarray["object"] = self::construct_like_object($importer, $parent_item);
1607 $datarray["body"] = self::construct_like_body($contact, $parent_item, $guid);
1609 $message_id = item_store($datarray);
1612 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1614 // If we are the origin of the parent we store the original data and notify our followers
1615 if($message_id AND $parent_item["origin"]) {
1617 // Formerly we stored the signed text, the signature and the author in different fields.
1618 // We now store the raw data so that we are more flexible.
1619 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1620 intval($message_id),
1621 dbesc(json_encode($data))
1625 proc_run(PRIORITY_HIGH, "include/notifier.php", "comment-import", $message_id);
1632 * @brief Processes private messages
1634 * @param array $importer Array of the importer user
1635 * @param object $data The message object
1637 * @return bool Success?
1639 private static function receive_message($importer, $data) {
1640 $guid = notags(unxmlify($data->guid));
1641 $parent_guid = notags(unxmlify($data->parent_guid));
1642 $text = unxmlify($data->text);
1643 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1644 $author = notags(unxmlify($data->author));
1645 $conversation_guid = notags(unxmlify($data->conversation_guid));
1647 $contact = self::allowed_contact_by_handle($importer, $author, true);
1652 $conversation = null;
1654 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1655 intval($importer["uid"]),
1656 dbesc($conversation_guid)
1659 $conversation = $c[0];
1661 logger("conversation not available.");
1665 $message_uri = $author.":".$guid;
1667 $person = self::person_by_handle($author);
1669 logger("unable to find author details");
1673 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1674 dbesc($message_uri),
1675 intval($importer["uid"])
1677 if (dbm::is_result($r)) {
1678 logger("duplicate message already delivered.", LOGGER_DEBUG);
1682 $body = diaspora2bb($text);
1684 $body = self::replace_people_guid($body, $person["url"]);
1686 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1687 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1688 intval($importer["uid"]),
1690 intval($conversation["id"]),
1691 dbesc($person["name"]),
1692 dbesc($person["photo"]),
1693 dbesc($person["url"]),
1694 intval($contact["id"]),
1695 dbesc($conversation["subject"]),
1699 dbesc($message_uri),
1700 dbesc($author.":".$parent_guid),
1704 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1705 dbesc(datetime_convert()),
1706 intval($conversation["id"])
1713 * @brief Processes participations - unsupported by now
1715 * @param array $importer Array of the importer user
1716 * @param object $data The message object
1718 * @return bool always true
1720 private static function receive_participation($importer, $data) {
1721 // I'm not sure if we can fully support this message type
1726 * @brief Processes photos - unneeded
1728 * @param array $importer Array of the importer user
1729 * @param object $data The message object
1731 * @return bool always true
1733 private static function receive_photo($importer, $data) {
1734 // There doesn't seem to be a reason for this function, since the photo data is transmitted in the status message as well
1739 * @brief Processes poll participations - unssupported
1741 * @param array $importer Array of the importer user
1742 * @param object $data The message object
1744 * @return bool always true
1746 private static function receive_poll_participation($importer, $data) {
1747 // We don't support polls by now
1752 * @brief Processes incoming profile updates
1754 * @param array $importer Array of the importer user
1755 * @param object $data The message object
1757 * @return bool Success
1759 private static function receive_profile($importer, $data) {
1760 $author = strtolower(notags(unxmlify($data->author)));
1762 $contact = self::contact_by_handle($importer["uid"], $author);
1766 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
1767 $image_url = unxmlify($data->image_url);
1768 $birthday = unxmlify($data->birthday);
1769 $location = diaspora2bb(unxmlify($data->location));
1770 $about = diaspora2bb(unxmlify($data->bio));
1771 $gender = unxmlify($data->gender);
1772 $searchable = (unxmlify($data->searchable) == "true");
1773 $nsfw = (unxmlify($data->nsfw) == "true");
1774 $tags = unxmlify($data->tag_string);
1776 $tags = explode("#", $tags);
1778 $keywords = array();
1779 foreach ($tags as $tag) {
1780 $tag = trim(strtolower($tag));
1785 $keywords = implode(", ", $keywords);
1787 $handle_parts = explode("@", $author);
1788 $nick = $handle_parts[0];
1791 $name = $handle_parts[0];
1793 if( preg_match("|^https?://|", $image_url) === 0)
1794 $image_url = "http://".$handle_parts[1].$image_url;
1796 update_contact_avatar($image_url, $importer["uid"], $contact["id"]);
1798 // Generic birthday. We don't know the timezone. The year is irrelevant.
1800 $birthday = str_replace("1000", "1901", $birthday);
1802 if ($birthday != "")
1803 $birthday = datetime_convert("UTC", "UTC", $birthday, "Y-m-d");
1805 // this is to prevent multiple birthday notifications in a single year
1806 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
1808 if(substr($birthday,5) === substr($contact["bd"],5))
1809 $birthday = $contact["bd"];
1811 $r = q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
1812 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
1816 dbesc(datetime_convert()),
1822 intval($contact["id"]),
1823 intval($importer["uid"])
1827 poco_check($contact["url"], $name, NETWORK_DIASPORA, $image_url, $about, $location, $gender, $keywords, "",
1828 datetime_convert(), 2, $contact["id"], $importer["uid"]);
1831 $gcontact = array("url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
1832 "photo" => $image_url, "name" => $name, "location" => $location,
1833 "about" => $about, "birthday" => $birthday, "gender" => $gender,
1834 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
1835 "hide" => !$searchable, "nsfw" => $nsfw);
1837 update_gcontact($gcontact);
1839 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
1845 * @brief Processes incoming friend requests
1847 * @param array $importer Array of the importer user
1848 * @param array $contact The contact that send the request
1850 private static function receive_request_make_friend($importer, $contact) {
1854 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1855 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1856 intval(CONTACT_IS_FRIEND),
1857 intval($contact["id"]),
1858 intval($importer["uid"])
1861 // send notification
1863 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
1864 intval($importer["uid"])
1867 if($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(get_pconfig($importer["uid"], "system", "post_newfriend"))) {
1869 $self = q("SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
1870 intval($importer["uid"])
1873 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
1875 if($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
1878 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
1879 $arr["uid"] = $importer["uid"];
1880 $arr["contact-id"] = $self[0]["id"];
1882 $arr["type"] = 'wall';
1883 $arr["gravity"] = 0;
1885 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
1886 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
1887 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
1888 $arr["verb"] = ACTIVITY_FRIEND;
1889 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
1891 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
1892 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1893 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
1894 $arr["body"] = sprintf(t("%1$s is now friends with %2$s"), $A, $B)."\n\n\n".$Bphoto;
1896 $arr["object"] = self::construct_new_friend_object($contact);
1898 $arr["last-child"] = 1;
1900 $arr["allow_cid"] = $user[0]["allow_cid"];
1901 $arr["allow_gid"] = $user[0]["allow_gid"];
1902 $arr["deny_cid"] = $user[0]["deny_cid"];
1903 $arr["deny_gid"] = $user[0]["deny_gid"];
1905 $i = item_store($arr);
1907 proc_run(PRIORITY_HIGH, "include/notifier.php", "activity", $i);
1913 * @brief Creates a XML object for a "new friend" message
1915 * @param array $contact Array of the contact
1917 * @return string The XML
1919 private static function construct_new_friend_object($contact) {
1920 $objtype = ACTIVITY_OBJ_PERSON;
1921 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
1922 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
1924 $xmldata = array("object" => array("type" => $objtype,
1925 "title" => $contact["name"],
1926 "id" => $contact["url"]."/".$contact["name"],
1929 return xml::from_array($xmldata, $xml, true);
1933 * @brief Processes incoming sharing notification
1935 * @param array $importer Array of the importer user
1936 * @param object $data The message object
1938 * @return bool Success
1940 private static function receive_contact_request($importer, $data) {
1941 $author = unxmlify($data->author);
1942 $recipient = unxmlify($data->recipient);
1944 if (!$author || !$recipient) {
1948 // the current protocol version doesn't know these fields
1949 // That means that we will assume their existance
1950 if (isset($data->following)) {
1951 $following = (unxmlify($data->following) == "true");
1956 if (isset($data->sharing)) {
1957 $sharing = (unxmlify($data->sharing) == "true");
1962 $contact = self::contact_by_handle($importer["uid"],$author);
1964 // perhaps we were already sharing with this person. Now they're sharing with us.
1965 // That makes us friends.
1967 if ($following AND $sharing) {
1968 logger("Author ".$author." (Contact ".$contact["id"].") wants to have a bidirectional conection.", LOGGER_DEBUG);
1969 self::receive_request_make_friend($importer, $contact);
1971 // refetch the contact array
1972 $contact = self::contact_by_handle($importer["uid"],$author);
1974 // If we are now friends, we are sending a share message.
1975 // Normally we needn't to do so, but the first message could have been vanished.
1976 if (in_array($contact["rel"], array(CONTACT_IS_FRIEND, CONTACT_IS_FOLLOWER))) {
1977 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
1979 logger("Sending share message to author ".$author." - Contact: ".$contact["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
1980 $ret = self::send_share($u[0], $contact);
1984 } else { /// @todo Handle all possible variations of adding and retracting of permissions
1985 logger("Author ".$author." (Contact ".$contact["id"].") wants to change the relationship: Following: ".$following." - sharing: ".$sharing. "(By now unsupported)", LOGGER_DEBUG);
1990 if (!$following AND $sharing AND in_array($importer["page-flags"], array(PAGE_SOAPBOX, PAGE_NORMAL))) {
1991 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
1993 } elseif (!$following AND !$sharing) {
1994 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
1996 } elseif (!$following AND $sharing) {
1997 logger("Author ".$author." wants to share with us.", LOGGER_DEBUG);
1998 } elseif ($following AND $sharing) {
1999 logger("Author ".$author." wants to have a bidirectional conection.", LOGGER_DEBUG);
2000 } elseif ($following AND !$sharing) {
2001 logger("Author ".$author." wants to listen to us.", LOGGER_DEBUG);
2004 $ret = self::person_by_handle($author);
2006 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
2007 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
2011 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
2013 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
2014 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
2015 intval($importer["uid"]),
2016 dbesc($ret["network"]),
2017 dbesc($ret["addr"]),
2020 dbesc(normalise_link($ret["url"])),
2022 dbesc($ret["name"]),
2023 dbesc($ret["nick"]),
2024 dbesc($ret["photo"]),
2025 dbesc($ret["pubkey"]),
2026 dbesc($ret["notify"]),
2027 dbesc($ret["poll"]),
2032 // find the contact record we just created
2034 $contact_record = self::contact_by_handle($importer["uid"],$author);
2036 if (!$contact_record) {
2037 logger("unable to locate newly created contact record.");
2041 logger("Author ".$author." was added as contact number ".$contact_record["id"].".", LOGGER_DEBUG);
2043 $def_gid = get_default_group($importer['uid'], $ret["network"]);
2045 if(intval($def_gid))
2046 group_add_member($importer["uid"], "", $contact_record["id"], $def_gid);
2048 update_contact_avatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
2050 if($importer["page-flags"] == PAGE_NORMAL) {
2052 logger("Sending intra message for author ".$author.".", LOGGER_DEBUG);
2054 $hash = random_string().(string)time(); // Generate a confirm_key
2056 $ret = q("INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
2057 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
2058 intval($importer["uid"]),
2059 intval($contact_record["id"]),
2062 dbesc(t("Sharing notification from Diaspora network")),
2064 dbesc(datetime_convert())
2068 // automatic friend approval
2070 logger("Does an automatic friend approval for author ".$author.".", LOGGER_DEBUG);
2072 update_contact_avatar($contact_record["photo"],$importer["uid"],$contact_record["id"]);
2074 // technically they are sharing with us (CONTACT_IS_SHARING),
2075 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
2076 // we are going to change the relationship and make them a follower.
2078 if (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing AND $following)
2079 $new_relation = CONTACT_IS_FRIEND;
2080 elseif (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing)
2081 $new_relation = CONTACT_IS_SHARING;
2083 $new_relation = CONTACT_IS_FOLLOWER;
2085 $r = q("UPDATE `contact` SET `rel` = %d,
2093 intval($new_relation),
2094 dbesc(datetime_convert()),
2095 dbesc(datetime_convert()),
2096 intval($contact_record["id"])
2099 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
2101 logger("Sending share message (Relation: ".$new_relation.") to author ".$author." - Contact: ".$contact_record["id"]." - User: ".$importer["uid"], LOGGER_DEBUG);
2102 $ret = self::send_share($u[0], $contact_record);
2104 // Send the profile data, maybe it weren't transmitted before
2105 self::send_profile($importer["uid"], array($contact_record));
2113 * @brief Fetches a message with a given guid
2115 * @param string $guid message guid
2116 * @param string $orig_author handle of the original post
2117 * @param string $author handle of the sharer
2119 * @return array The fetched item
2121 private static function original_item($guid, $orig_author, $author) {
2123 // Do we already have this item?
2124 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2125 `author-name`, `author-link`, `author-avatar`
2126 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2129 if (dbm::is_result($r)) {
2130 logger("reshared message ".$guid." already exists on system.");
2132 // Maybe it is already a reshared item?
2133 // Then refetch the content, if it is a reshare from a reshare.
2134 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2135 if (self::is_reshare($r[0]["body"], true)) {
2137 } elseif (self::is_reshare($r[0]["body"], false)) {
2138 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2140 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2142 // Add OEmbed and other information to the body
2143 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
2151 if (!dbm::is_result($r)) {
2152 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
2153 logger("1st try: reshared message ".$guid." will be fetched via SSL from the server ".$server);
2154 $item_id = self::store_by_guid($guid, $server);
2157 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
2158 logger("2nd try: reshared message ".$guid." will be fetched without SLL from the server ".$server);
2159 $item_id = self::store_by_guid($guid, $server);
2163 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2164 `author-name`, `author-link`, `author-avatar`
2165 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2168 if (dbm::is_result($r)) {
2169 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2170 if (self::is_reshare($r[0]["body"], false)) {
2171 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2172 $r[0]["body"] = self::replace_people_guid($r[0]["body"], $r[0]["author-link"]);
2184 * @brief Processes a reshare message
2186 * @param array $importer Array of the importer user
2187 * @param object $data The message object
2188 * @param string $xml The original XML of the message
2190 * @return int the message id
2192 private static function receive_reshare($importer, $data, $xml) {
2193 $root_author = notags(unxmlify($data->root_author));
2194 $root_guid = notags(unxmlify($data->root_guid));
2195 $guid = notags(unxmlify($data->guid));
2196 $author = notags(unxmlify($data->author));
2197 $public = notags(unxmlify($data->public));
2198 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2200 $contact = self::allowed_contact_by_handle($importer, $author, false);
2205 $message_id = self::message_exists($importer["uid"], $guid);
2210 $original_item = self::original_item($root_guid, $root_author, $author);
2211 if (!$original_item) {
2215 $orig_url = App::get_baseurl()."/display/".$original_item["guid"];
2217 $datarray = array();
2219 $datarray["uid"] = $importer["uid"];
2220 $datarray["contact-id"] = $contact["id"];
2221 $datarray["network"] = NETWORK_DIASPORA;
2223 $datarray["author-name"] = $contact["name"];
2224 $datarray["author-link"] = $contact["url"];
2225 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2227 $datarray["owner-name"] = $datarray["author-name"];
2228 $datarray["owner-link"] = $datarray["author-link"];
2229 $datarray["owner-avatar"] = $datarray["author-avatar"];
2231 $datarray["guid"] = $guid;
2232 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2234 $datarray["verb"] = ACTIVITY_POST;
2235 $datarray["gravity"] = GRAVITY_PARENT;
2237 $datarray["object"] = $xml;
2239 $prefix = share_header($original_item["author-name"], $original_item["author-link"], $original_item["author-avatar"],
2240 $original_item["guid"], $original_item["created"], $orig_url);
2241 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2243 $datarray["tag"] = $original_item["tag"];
2244 $datarray["app"] = $original_item["app"];
2246 $datarray["plink"] = self::plink($author, $guid);
2247 $datarray["private"] = (($public == "false") ? 1 : 0);
2248 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2250 $datarray["object-type"] = $original_item["object-type"];
2252 self::fetch_guid($datarray);
2253 $message_id = item_store($datarray);
2256 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2263 * @brief Processes retractions
2265 * @param array $importer Array of the importer user
2266 * @param array $contact The contact of the item owner
2267 * @param object $data The message object
2269 * @return bool success
2271 private static function item_retraction($importer, $contact, $data) {
2272 $target_type = notags(unxmlify($data->target_type));
2273 $target_guid = notags(unxmlify($data->target_guid));
2274 $author = notags(unxmlify($data->author));
2276 $person = self::person_by_handle($author);
2277 if (!is_array($person)) {
2278 logger("unable to find author detail for ".$author);
2282 $r = q("SELECT `id`, `parent`, `parent-uri`, `author-link` FROM `item` WHERE `guid` = '%s' AND `uid` = %d AND NOT `file` LIKE '%%[%%' LIMIT 1",
2283 dbesc($target_guid),
2284 intval($importer["uid"])
2289 // Check if the sender is the thread owner
2290 $p = q("SELECT `id`, `author-link`, `origin` FROM `item` WHERE `id` = %d",
2291 intval($r[0]["parent"]));
2293 // Only delete it if the parent author really fits
2294 if (!link_compare($p[0]["author-link"], $contact["url"]) AND !link_compare($r[0]["author-link"], $contact["url"])) {
2295 logger("Thread author ".$p[0]["author-link"]." and item author ".$r[0]["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2299 // 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
2300 q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' WHERE `id` = %d",
2301 dbesc(datetime_convert()),
2302 dbesc(datetime_convert()),
2305 delete_thread($r[0]["id"], $r[0]["parent-uri"]);
2307 logger("Deleted target ".$target_guid." (".$r[0]["id"].") from user ".$importer["uid"]." parent: ".$p[0]["id"], LOGGER_DEBUG);
2309 // Now check if the retraction needs to be relayed by us
2310 if($p[0]["origin"]) {
2312 proc_run(PRIORITY_HIGH, "include/notifier.php", "drop", $r[0]["id"]);
2319 * @brief Receives retraction messages
2321 * @param array $importer Array of the importer user
2322 * @param string $sender The sender of the message
2323 * @param object $data The message object
2325 * @return bool Success
2327 private static function receive_retraction($importer, $sender, $data) {
2328 $target_type = notags(unxmlify($data->target_type));
2330 $contact = self::contact_by_handle($importer["uid"], $sender);
2332 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2336 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2338 switch ($target_type) {
2341 case "Post": // "Post" will be supported in a future version
2343 case "StatusMessage":
2344 return self::item_retraction($importer, $contact, $data);;
2348 /// @todo What should we do with an "unshare"?
2349 // Removing the contact isn't correct since we still can read the public items
2350 contact_remove($contact["id"]);
2354 logger("Unknown target type ".$target_type);
2361 * @brief Receives status messages
2363 * @param array $importer Array of the importer user
2364 * @param object $data The message object
2365 * @param string $xml The original XML of the message
2367 * @return int The message id of the newly created item
2369 private static function receive_status_message($importer, $data, $xml) {
2370 $raw_message = unxmlify($data->raw_message);
2371 $guid = notags(unxmlify($data->guid));
2372 $author = notags(unxmlify($data->author));
2373 $public = notags(unxmlify($data->public));
2374 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
2375 $provider_display_name = notags(unxmlify($data->provider_display_name));
2377 /// @todo enable support for polls
2378 //if ($data->poll) {
2379 // foreach ($data->poll AS $poll)
2383 $contact = self::allowed_contact_by_handle($importer, $author, false);
2388 $message_id = self::message_exists($importer["uid"], $guid);
2394 if ($data->location) {
2395 foreach ($data->location->children() AS $fieldname => $data) {
2396 $address[$fieldname] = notags(unxmlify($data));
2400 $body = diaspora2bb($raw_message);
2402 $datarray = array();
2404 // Attach embedded pictures to the body
2406 foreach ($data->photo AS $photo) {
2407 $body = "[img]".unxmlify($photo->remote_photo_path).
2408 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2411 $datarray["object-type"] = ACTIVITY_OBJ_IMAGE;
2413 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2415 // Add OEmbed and other information to the body
2416 if (!self::is_redmatrix($contact["url"])) {
2417 $body = add_page_info_to_body($body, false, true);
2421 $datarray["uid"] = $importer["uid"];
2422 $datarray["contact-id"] = $contact["id"];
2423 $datarray["network"] = NETWORK_DIASPORA;
2425 $datarray["author-name"] = $contact["name"];
2426 $datarray["author-link"] = $contact["url"];
2427 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2429 $datarray["owner-name"] = $datarray["author-name"];
2430 $datarray["owner-link"] = $datarray["author-link"];
2431 $datarray["owner-avatar"] = $datarray["author-avatar"];
2433 $datarray["guid"] = $guid;
2434 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2436 $datarray["verb"] = ACTIVITY_POST;
2437 $datarray["gravity"] = GRAVITY_PARENT;
2439 $datarray["object"] = $xml;
2441 $datarray["body"] = self::replace_people_guid($body, $contact["url"]);
2443 if ($provider_display_name != "") {
2444 $datarray["app"] = $provider_display_name;
2447 $datarray["plink"] = self::plink($author, $guid);
2448 $datarray["private"] = (($public == "false") ? 1 : 0);
2449 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = $created_at;
2451 if (isset($address["address"])) {
2452 $datarray["location"] = $address["address"];
2455 if (isset($address["lat"]) AND isset($address["lng"])) {
2456 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2459 self::fetch_guid($datarray);
2460 $message_id = item_store($datarray);
2463 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2469 /* ************************************************************************************** *
2470 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2471 * ************************************************************************************** */
2474 * @brief returnes the handle of a contact
2476 * @param array $me contact array
2478 * @return string the handle in the format user@domain.tld
2480 private static function my_handle($contact) {
2481 if ($contact["addr"] != "")
2482 return $contact["addr"];
2484 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2485 // So - just in case - we build the the address here.
2486 if ($contact["nickname"] != "")
2487 $nick = $contact["nickname"];
2489 $nick = $contact["nick"];
2491 return $nick."@".substr(App::get_baseurl(), strpos(App::get_baseurl(),"://") + 3);
2495 * @brief Creates the envelope for the "fetch" endpoint
2497 * @param string $msg The message that is to be transmitted
2498 * @param array $user The record of the sender
2500 * @return string The envelope
2503 public static function build_magic_envelope($msg, $user) {
2505 $b64url_data = base64url_encode($msg);
2506 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2508 $key_id = base64url_encode(self::my_handle($user));
2509 $type = "application/xml";
2510 $encoding = "base64url";
2511 $alg = "RSA-SHA256";
2512 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2513 $signature = rsa_sign($signable_data, $user["prvkey"]);
2514 $sig = base64url_encode($signature);
2516 $xmldata = array("me:env" => array("me:data" => $data,
2517 "@attributes" => array("type" => $type),
2518 "me:encoding" => $encoding,
2521 "@attributes2" => array("key_id" => $key_id)));
2523 $namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
2525 return xml::from_array($xmldata, $xml, false, $namespaces);
2529 * @brief Creates the envelope for a public message
2531 * @param string $msg The message that is to be transmitted
2532 * @param array $user The record of the sender
2533 * @param array $contact Target of the communication
2534 * @param string $prvkey The private key of the sender
2535 * @param string $pubkey The public key of the receiver
2537 * @return string The envelope
2539 private static function build_public_message($msg, $user, $contact, $prvkey, $pubkey) {
2541 logger("Message: ".$msg, LOGGER_DATA);
2543 $handle = self::my_handle($user);
2545 $b64url_data = base64url_encode($msg);
2547 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2549 $type = "application/xml";
2550 $encoding = "base64url";
2551 $alg = "RSA-SHA256";
2553 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2555 $signature = rsa_sign($signable_data,$prvkey);
2556 $sig = base64url_encode($signature);
2558 $xmldata = array("diaspora" => array("header" => array("author_id" => $handle),
2559 "me:env" => array("me:encoding" => $encoding,
2562 "@attributes" => array("type" => $type),
2563 "me:sig" => $sig)));
2565 $namespaces = array("" => "https://joindiaspora.com/protocol",
2566 "me" => "http://salmon-protocol.org/ns/magic-env");
2568 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2570 logger("magic_env: ".$magic_env, LOGGER_DATA);
2575 * @brief Creates the envelope for a private message
2577 * @param string $msg The message that is to be transmitted
2578 * @param array $user The record of the sender
2579 * @param array $contact Target of the communication
2580 * @param string $prvkey The private key of the sender
2581 * @param string $pubkey The public key of the receiver
2583 * @return string The envelope
2585 private static function build_private_message($msg, $user, $contact, $prvkey, $pubkey) {
2587 logger("Message: ".$msg, LOGGER_DATA);
2589 // without a public key nothing will work
2592 logger("pubkey missing: contact id: ".$contact["id"]);
2596 $inner_aes_key = random_string(32);
2597 $b_inner_aes_key = base64_encode($inner_aes_key);
2598 $inner_iv = random_string(16);
2599 $b_inner_iv = base64_encode($inner_iv);
2601 $outer_aes_key = random_string(32);
2602 $b_outer_aes_key = base64_encode($outer_aes_key);
2603 $outer_iv = random_string(16);
2604 $b_outer_iv = base64_encode($outer_iv);
2606 $handle = self::my_handle($user);
2608 $padded_data = pkcs5_pad($msg,16);
2609 $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
2611 $b64_data = base64_encode($inner_encrypted);
2614 $b64url_data = base64url_encode($b64_data);
2615 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2617 $type = "application/xml";
2618 $encoding = "base64url";
2619 $alg = "RSA-SHA256";
2621 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2623 $signature = rsa_sign($signable_data,$prvkey);
2624 $sig = base64url_encode($signature);
2626 $xmldata = array("decrypted_header" => array("iv" => $b_inner_iv,
2627 "aes_key" => $b_inner_aes_key,
2628 "author_id" => $handle));
2630 $decrypted_header = xml::from_array($xmldata, $xml, true);
2631 $decrypted_header = pkcs5_pad($decrypted_header,16);
2633 $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
2635 $outer_json = json_encode(array("iv" => $b_outer_iv, "key" => $b_outer_aes_key));
2637 $encrypted_outer_key_bundle = "";
2638 openssl_public_encrypt($outer_json, $encrypted_outer_key_bundle, $pubkey);
2640 $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
2642 logger("outer_bundle: ".$b64_encrypted_outer_key_bundle." key: ".$pubkey, LOGGER_DATA);
2644 $encrypted_header_json_object = json_encode(array("aes_key" => base64_encode($encrypted_outer_key_bundle),
2645 "ciphertext" => base64_encode($ciphertext)));
2646 $cipher_json = base64_encode($encrypted_header_json_object);
2648 $xmldata = array("diaspora" => array("encrypted_header" => $cipher_json,
2649 "me:env" => array("me:encoding" => $encoding,
2652 "@attributes" => array("type" => $type),
2653 "me:sig" => $sig)));
2655 $namespaces = array("" => "https://joindiaspora.com/protocol",
2656 "me" => "http://salmon-protocol.org/ns/magic-env");
2658 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2660 logger("magic_env: ".$magic_env, LOGGER_DATA);
2665 * @brief Create the envelope for a message
2667 * @param string $msg The message that is to be transmitted
2668 * @param array $user The record of the sender
2669 * @param array $contact Target of the communication
2670 * @param string $prvkey The private key of the sender
2671 * @param string $pubkey The public key of the receiver
2672 * @param bool $public Is the message public?
2674 * @return string The message that will be transmitted to other servers
2676 private static function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
2679 $magic_env = self::build_public_message($msg,$user,$contact,$prvkey,$pubkey);
2681 $magic_env = self::build_private_message($msg,$user,$contact,$prvkey,$pubkey);
2683 // The data that will be transmitted is double encoded via "urlencode", strange ...
2684 $slap = "xml=".urlencode(urlencode($magic_env));
2689 * @brief Creates a signature for a message
2691 * @param array $owner the array of the owner of the message
2692 * @param array $message The message that is to be signed
2694 * @return string The signature
2696 private static function signature($owner, $message) {
2698 unset($sigmsg["author_signature"]);
2699 unset($sigmsg["parent_author_signature"]);
2701 $signed_text = implode(";", $sigmsg);
2703 return base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
2707 * @brief Transmit a message to a target server
2709 * @param array $owner the array of the item owner
2710 * @param array $contact Target of the communication
2711 * @param string $slap The message that is to be transmitted
2712 * @param bool $public_batch Is it a public post?
2713 * @param bool $queue_run Is the transmission called from the queue?
2714 * @param string $guid message guid
2716 * @return int Result of the transmission
2718 public static function transmit($owner, $contact, $slap, $public_batch, $queue_run=false, $guid = "") {
2722 $enabled = intval(get_config("system", "diaspora_enabled"));
2726 $logid = random_string(4);
2727 $dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
2729 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
2733 logger("transmit: ".$logid."-".$guid." ".$dest_url);
2735 if (!$queue_run && was_recently_delayed($contact["id"])) {
2738 if (!intval(get_config("system", "diaspora_test"))) {
2739 post_url($dest_url."/", $slap);
2740 $return_code = $a->get_curl_code();
2742 logger("test_mode");
2747 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
2749 if (!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
2750 logger("queue message");
2752 $r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
2753 intval($contact["id"]),
2754 dbesc(NETWORK_DIASPORA),
2756 intval($public_batch)
2759 logger("add_to_queue ignored - identical item already in queue");
2761 // queue message for redelivery
2762 add_to_queue($contact["id"], NETWORK_DIASPORA, $slap, $public_batch);
2764 // The message could not be delivered. We mark the contact as "dead"
2765 mark_for_death($contact);
2767 } elseif (($return_code >= 200) AND ($return_code <= 299)) {
2768 // We successfully delivered a message, the contact is alive
2769 unmark_for_death($contact);
2772 return(($return_code) ? $return_code : (-1));
2777 * @brief Build the post xml
2779 * @param string $type The message type
2780 * @param array $message The message data
2782 * @return string The post XML
2784 public static function build_post_xml($type, $message) {
2786 $data = array("XML" => array("post" => array($type => $message)));
2787 return xml::from_array($data, $xml);
2791 * @brief Builds and transmit messages
2793 * @param array $owner the array of the item owner
2794 * @param array $contact Target of the communication
2795 * @param string $type The message type
2796 * @param array $message The message data
2797 * @param bool $public_batch Is it a public post?
2798 * @param string $guid message guid
2799 * @param bool $spool Should the transmission be spooled or transmitted?
2801 * @return int Result of the transmission
2803 private static function build_and_transmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false) {
2805 $msg = self::build_post_xml($type, $message);
2807 logger('message: '.$msg, LOGGER_DATA);
2808 logger('send guid '.$guid, LOGGER_DEBUG);
2810 // Fallback if the private key wasn't transmitted in the expected field
2811 if ($owner['uprvkey'] == "")
2812 $owner['uprvkey'] = $owner['prvkey'];
2814 $slap = self::build_message($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
2817 add_to_queue($contact['id'], NETWORK_DIASPORA, $slap, $public_batch);
2820 $return_code = self::transmit($owner, $contact, $slap, $public_batch, false, $guid);
2822 logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
2824 return $return_code;
2828 * @brief Sends a "share" message
2830 * @param array $owner the array of the item owner
2831 * @param array $contact Target of the communication
2833 * @return int The result of the transmission
2835 public static function send_share($owner,$contact) {
2837 $message = array("sender_handle" => self::my_handle($owner),
2838 "recipient_handle" => $contact["addr"]);
2840 logger("Send share ".print_r($message, true), LOGGER_DEBUG);
2842 return self::build_and_transmit($owner, $contact, "request", $message);
2846 * @brief sends an "unshare"
2848 * @param array $owner the array of the item owner
2849 * @param array $contact Target of the communication
2851 * @return int The result of the transmission
2853 public static function send_unshare($owner,$contact) {
2855 $message = array("post_guid" => $owner["guid"],
2856 "diaspora_handle" => self::my_handle($owner),
2857 "type" => "Person");
2859 logger("Send unshare ".print_r($message, true), LOGGER_DEBUG);
2861 return self::build_and_transmit($owner, $contact, "retraction", $message);
2865 * @brief Checks a message body if it is a reshare
2867 * @param string $body The message body that is to be check
2868 * @param bool $complete Should it be a complete check or a simple check?
2870 * @return array|bool Reshare details or "false" if no reshare
2872 public static function is_reshare($body, $complete = true) {
2873 $body = trim($body);
2875 // Skip if it isn't a pure repeated messages
2876 // Does it start with a share?
2877 if ((strpos($body, "[share") > 0) AND $complete)
2880 // Does it end with a share?
2881 if (strlen($body) > (strrpos($body, "[/share]") + 8))
2884 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2885 // Skip if there is no shared message in there
2886 if ($body == $attributes)
2889 // If we don't do the complete check we quit here
2894 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2895 if ($matches[1] != "")
2896 $guid = $matches[1];
2898 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2899 if ($matches[1] != "")
2900 $guid = $matches[1];
2903 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2904 dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2907 $ret["root_handle"] = self::handle_from_contact($r[0]["contact-id"]);
2908 $ret["root_guid"] = $guid;
2914 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2915 if ($matches[1] != "")
2916 $profile = $matches[1];
2918 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2919 if ($matches[1] != "")
2920 $profile = $matches[1];
2924 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2925 if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2929 preg_match("/link='(.*?)'/ism", $attributes, $matches);
2930 if ($matches[1] != "")
2931 $link = $matches[1];
2933 preg_match('/link="(.*?)"/ism', $attributes, $matches);
2934 if ($matches[1] != "")
2935 $link = $matches[1];
2937 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2938 if (($ret["root_guid"] == $link) OR (trim($ret["root_guid"]) == ""))
2945 * @brief Create an event array
2947 * @param integer $event_id The id of the event
2949 * @return array with event data
2951 private static function build_event($event_id) {
2953 $r = q("SELECT `guid`, `uid`, `start`, `finish`, `nofinish`, `summary`, `desc`, `location`, `adjust` FROM `event` WHERE `id` = %d", intval($event_id));
2954 if (!dbm::is_result($r)) {
2960 $eventdata = array();
2962 $r = q("SELECT `timezone` FROM `user` WHERE `uid` = %d", intval($event['uid']));
2963 if (!dbm::is_result($r)) {
2969 $r = q("SELECT `addr`, `nick` FROM `contact` WHERE `uid` = %d AND `self`", intval($event['uid']));
2970 if (!dbm::is_result($r)) {
2976 $eventdata['author'] = self::my_handle($owner);
2978 if ($event['guid']) {
2979 $eventdata['guid'] = $event['guid'];
2982 $mask = 'Y-m-d\TH:i:s\Z';
2984 /// @todo - establish "all day" events in Friendica
2985 $eventdata["all_day"] = "false";
2987 if (!$event['adjust']) {
2988 $eventdata['timezone'] = $user['timezone'];
2990 if ($eventdata['timezone'] == "") {
2991 $eventdata['timezone'] = 'UTC';
2995 if ($event['start']) {
2996 $eventdata['start'] = datetime_convert($eventdata['timezone'], "UTC", $event['start'], $mask);
2998 if ($event['finish'] AND !$event['nofinish']) {
2999 $eventdata['end'] = datetime_convert($eventdata['timezone'], "UTC", $event['finish'], $mask);
3001 if ($event['summary']) {
3002 $eventdata['summary'] = html_entity_decode(bb2diaspora($event['summary']));
3004 if ($event['desc']) {
3005 $eventdata['description'] = html_entity_decode(bb2diaspora($event['desc']));
3007 if ($event['location']) {
3008 $location = array();
3009 $location["address"] = html_entity_decode(bb2diaspora($event['location']));
3010 $location["lat"] = 0;
3011 $location["lng"] = 0;
3012 $eventdata['location'] = $location;
3019 * @brief Create a post (status message or reshare)
3021 * @param array $item The item that will be exported
3022 * @param array $owner the array of the item owner
3025 * 'type' -> Message type ("status_message" or "reshare")
3026 * 'message' -> Array of XML elements of the status
3028 public static function build_status($item, $owner) {
3030 $cachekey = "diaspora:build_status:".$item['guid'];
3032 $result = Cache::get($cachekey);
3033 if (!is_null($result)) {
3037 $myaddr = self::my_handle($owner);
3039 $public = (($item["private"]) ? "false" : "true");
3041 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3043 // Detect a share element and do a reshare
3044 if (!$item['private'] AND ($ret = self::is_reshare($item["body"]))) {
3045 $message = array("root_diaspora_id" => $ret["root_handle"],
3046 "root_guid" => $ret["root_guid"],
3047 "guid" => $item["guid"],
3048 "diaspora_handle" => $myaddr,
3049 "public" => $public,
3050 "created_at" => $created,
3051 "provider_display_name" => $item["app"]);
3055 $title = $item["title"];
3056 $body = $item["body"];
3058 // convert to markdown
3059 $body = html_entity_decode(bb2diaspora($body));
3063 $body = "## ".html_entity_decode($title)."\n\n".$body;
3065 if ($item["attach"]) {
3066 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
3068 $body .= "\n".t("Attachments:")."\n";
3069 foreach($matches as $mtch)
3070 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
3074 $location = array();
3076 if ($item["location"] != "")
3077 $location["address"] = $item["location"];
3079 if ($item["coord"] != "") {
3080 $coord = explode(" ", $item["coord"]);
3081 $location["lat"] = $coord[0];
3082 $location["lng"] = $coord[1];
3085 $message = array("raw_message" => $body,
3086 "location" => $location,
3087 "guid" => $item["guid"],
3088 "diaspora_handle" => $myaddr,
3089 "public" => $public,
3090 "created_at" => $created,
3091 "provider_display_name" => $item["app"]);
3093 // Diaspora rejects messages when they contain a location without "lat" or "lng"
3094 if (!isset($location["lat"]) OR !isset($location["lng"])) {
3095 unset($message["location"]);
3098 if ($item['event-id'] > 0) {
3099 $event = self::build_event($item['event-id']);
3100 if (count($event)) {
3101 $message['event'] = $event;
3103 /// @todo Once Diaspora supports it, we will remove the body
3104 // $message['raw_message'] = '';
3108 $type = "status_message";
3111 $msg = array("type" => $type, "message" => $message);
3113 Cache::set($cachekey, $msg, CACHE_QUARTER_HOUR);
3119 * @brief Sends a post
3121 * @param array $item The item that will be exported
3122 * @param array $owner the array of the item owner
3123 * @param array $contact Target of the communication
3124 * @param bool $public_batch Is it a public post?
3126 * @return int The result of the transmission
3128 public static function send_status($item, $owner, $contact, $public_batch = false) {
3130 $status = self::build_status($item, $owner);
3132 return self::build_and_transmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
3136 * @brief Creates a "like" object
3138 * @param array $item The item that will be exported
3139 * @param array $owner the array of the item owner
3141 * @return array The data for a "like"
3143 private static function construct_like($item, $owner) {
3145 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
3146 dbesc($item["thr-parent"]));
3147 if (!dbm::is_result($p))
3152 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
3155 return(array("positive" => $positive,
3156 "guid" => $item["guid"],
3157 "target_type" => $target_type,
3158 "parent_guid" => $parent["guid"],
3159 "author_signature" => "",
3160 "diaspora_handle" => self::my_handle($owner)));
3164 * @brief Creates the object for a comment
3166 * @param array $item The item that will be exported
3167 * @param array $owner the array of the item owner
3169 * @return array The data for a comment
3171 private static function construct_comment($item, $owner) {
3173 $p = q("SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
3174 intval($item["parent"]),
3175 intval($item["parent"])
3178 if (!dbm::is_result($p))
3183 $text = html_entity_decode(bb2diaspora($item["body"]));
3184 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3186 $comment = array("guid" => $item["guid"],
3187 "parent_guid" => $parent["guid"],
3188 "author_signature" => "",
3190 /// @todo Currently disabled until Diaspora supports it: "created_at" => $created,
3191 "diaspora_handle" => self::my_handle($owner));
3193 // Send the thread parent guid only if it is a threaded comment
3194 if ($item['thr-parent'] != $item['parent-uri']) {
3195 $comment['thread_parent_guid'] = self::get_guid_from_uri($item['thr-parent'], $item['uid']);
3201 * @brief Send a like or a comment
3203 * @param array $item The item that will be exported
3204 * @param array $owner the array of the item owner
3205 * @param array $contact Target of the communication
3206 * @param bool $public_batch Is it a public post?
3208 * @return int The result of the transmission
3210 public static function send_followup($item,$owner,$contact,$public_batch = false) {
3212 if($item['verb'] === ACTIVITY_LIKE) {
3213 $message = self::construct_like($item, $owner);
3216 $message = self::construct_comment($item, $owner);
3223 $message["author_signature"] = self::signature($owner, $message);
3225 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3229 * @brief Creates a message from a signature record entry
3231 * @param array $item The item that will be exported
3232 * @param array $signature The entry of the "sign" record
3234 * @return string The message
3236 private static function message_from_signature($item, $signature) {
3238 // Split the signed text
3239 $signed_parts = explode(";", $signature['signed_text']);
3241 if ($item["deleted"])
3242 $message = array("parent_author_signature" => "",
3243 "target_guid" => $signed_parts[0],
3244 "target_type" => $signed_parts[1],
3245 "sender_handle" => $signature['signer'],
3246 "target_author_signature" => $signature['signature']);
3247 elseif ($item['verb'] === ACTIVITY_LIKE)
3248 $message = array("positive" => $signed_parts[0],
3249 "guid" => $signed_parts[1],
3250 "target_type" => $signed_parts[2],
3251 "parent_guid" => $signed_parts[3],
3252 "parent_author_signature" => "",
3253 "author_signature" => $signature['signature'],
3254 "diaspora_handle" => $signed_parts[4]);
3256 // Remove the comment guid
3257 $guid = array_shift($signed_parts);
3259 // Remove the parent guid
3260 $parent_guid = array_shift($signed_parts);
3262 // Remove the handle
3263 $handle = array_pop($signed_parts);
3265 // Glue the parts together
3266 $text = implode(";", $signed_parts);
3268 $message = array("guid" => $guid,
3269 "parent_guid" => $parent_guid,
3270 "parent_author_signature" => "",
3271 "author_signature" => $signature['signature'],
3272 "text" => implode(";", $signed_parts),
3273 "diaspora_handle" => $handle);
3279 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
3281 * @param array $item The item that will be exported
3282 * @param array $owner the array of the item owner
3283 * @param array $contact Target of the communication
3284 * @param bool $public_batch Is it a public post?
3286 * @return int The result of the transmission
3288 public static function send_relay($item, $owner, $contact, $public_batch = false) {
3290 if ($item["deleted"])
3291 return self::send_retraction($item, $owner, $contact, $public_batch, true);
3292 elseif ($item['verb'] === ACTIVITY_LIKE)
3297 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3299 // fetch the original signature
3301 $r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3302 intval($item["id"]));
3305 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3311 // Old way - is used by the internal Friendica functions
3312 /// @todo Change all signatur storing functions to the new format
3313 if ($signature['signed_text'] AND $signature['signature'] AND $signature['signer'])
3314 $message = self::message_from_signature($item, $signature);
3316 $msg = json_decode($signature['signed_text'], true);
3319 if (is_array($msg)) {
3320 foreach ($msg AS $field => $data) {
3321 if (!$item["deleted"]) {
3322 if ($field == "author")
3323 $field = "diaspora_handle";
3324 if ($field == "parent_type")
3325 $field = "target_type";
3328 $message[$field] = $data;
3331 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3334 $message["parent_author_signature"] = self::signature($owner, $message);
3336 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3338 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3342 * @brief Sends a retraction (deletion) of a message, like or comment
3344 * @param array $item The item that will be exported
3345 * @param array $owner the array of the item owner
3346 * @param array $contact Target of the communication
3347 * @param bool $public_batch Is it a public post?
3348 * @param bool $relay Is the retraction transmitted from a relay?
3350 * @return int The result of the transmission
3352 public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
3354 $itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
3356 // Check whether the retraction is for a top-level post or whether it's a relayable
3357 if ($item["uri"] !== $item["parent-uri"]) {
3358 $msg_type = "relayable_retraction";
3359 $target_type = (($item["verb"] === ACTIVITY_LIKE) ? "Like" : "Comment");
3361 $msg_type = "signed_retraction";
3362 $target_type = "StatusMessage";
3365 if ($relay AND ($item["uri"] !== $item["parent-uri"]))
3366 $signature = "parent_author_signature";
3368 $signature = "target_author_signature";
3370 $signed_text = $item["guid"].";".$target_type;
3372 $message = array("target_guid" => $item['guid'],
3373 "target_type" => $target_type,
3374 "sender_handle" => $itemaddr,
3375 $signature => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
3377 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
3379 return self::build_and_transmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
3383 * @brief Sends a mail
3385 * @param array $item The item that will be exported
3386 * @param array $owner The owner
3387 * @param array $contact Target of the communication
3389 * @return int The result of the transmission
3391 public static function send_mail($item, $owner, $contact) {
3393 $myaddr = self::my_handle($owner);
3395 $r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3396 intval($item["convid"]),
3397 intval($item["uid"])
3400 if (!dbm::is_result($r)) {
3401 logger("conversation not found.");
3407 "guid" => $cnv["guid"],
3408 "subject" => $cnv["subject"],
3409 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d\TH:i:s\Z'),
3410 "diaspora_handle" => $cnv["creator"],
3411 "participant_handles" => $cnv["recips"]
3414 $body = bb2diaspora($item["body"]);
3415 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d\TH:i:s\Z');
3417 $signed_text = $item["guid"].";".$cnv["guid"].";".$body.";".$created.";".$myaddr.";".$cnv['guid'];
3418 $sig = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
3421 "guid" => $item["guid"],
3422 "parent_guid" => $cnv["guid"],
3423 "parent_author_signature" => $sig,
3424 "author_signature" => $sig,
3426 "created_at" => $created,
3427 "diaspora_handle" => $myaddr,
3428 "conversation_guid" => $cnv["guid"]
3431 if ($item["reply"]) {
3435 $message = array("guid" => $cnv["guid"],
3436 "subject" => $cnv["subject"],
3437 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d\TH:i:s\Z'),
3439 "diaspora_handle" => $cnv["creator"],
3440 "participant_handles" => $cnv["recips"]);
3442 $type = "conversation";
3445 return self::build_and_transmit($owner, $contact, $type, $message, false, $item["guid"]);
3449 * @brief Sends profile data
3451 * @param int $uid The user id
3453 public static function send_profile($uid, $recips = false) {
3459 $recips = q("SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
3460 AND `uid` = %d AND `rel` != %d",
3461 dbesc(NETWORK_DIASPORA),
3463 intval(CONTACT_IS_SHARING)
3468 $r = q("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
3470 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
3471 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
3472 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
3481 $handle = $profile["addr"];
3482 $first = ((strpos($profile['name'],' ')
3483 ? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']));
3484 $last = (($first === $profile['name']) ? '' : trim(substr($profile['name'], strlen($first))));
3485 $large = App::get_baseurl().'/photo/custom/300/'.$profile['uid'].'.jpg';
3486 $medium = App::get_baseurl().'/photo/custom/100/'.$profile['uid'].'.jpg';
3487 $small = App::get_baseurl().'/photo/custom/50/' .$profile['uid'].'.jpg';
3488 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
3490 if ($searchable === 'true') {
3491 $dob = '1000-00-00';
3493 if (($profile['dob']) && ($profile['dob'] != '0000-00-00'))
3494 $dob = ((intval($profile['dob'])) ? intval($profile['dob']) : '1000') .'-'. datetime_convert('UTC','UTC',$profile['dob'],'m-d');
3496 $about = $profile['about'];
3497 $about = strip_tags(bbcode($about));
3499 $location = formatted_location($profile);
3501 if ($profile['pub_keywords']) {
3502 $kw = str_replace(',',' ',$profile['pub_keywords']);
3503 $kw = str_replace(' ',' ',$kw);
3504 $arr = explode(' ',$profile['pub_keywords']);
3506 for($x = 0; $x < 5; $x ++) {
3508 $tags .= '#'. trim($arr[$x]) .' ';
3512 $tags = trim($tags);
3515 $message = array("diaspora_handle" => $handle,
3516 "first_name" => $first,
3517 "last_name" => $last,
3518 "image_url" => $large,
3519 "image_url_medium" => $medium,
3520 "image_url_small" => $small,
3522 "gender" => $profile['gender'],
3524 "location" => $location,
3525 "searchable" => $searchable,
3526 "tag_string" => $tags);
3528 foreach($recips as $recip) {
3529 logger("Send updated profile data for user ".$uid." to contact ".$recip["id"], LOGGER_DEBUG);
3530 self::build_and_transmit($profile, $recip, "profile", $message, false, "", true);
3535 * @brief Stores the signature for likes that are created on our system
3537 * @param array $contact The contact array of the "like"
3538 * @param int $post_id The post id of the "like"
3540 * @return bool Success
3542 public static function store_like_signature($contact, $post_id) {
3544 // Is the contact the owner? Then fetch the private key
3545 if (!$contact['self'] OR ($contact['uid'] == 0)) {
3546 logger("No owner post, so not storing signature", LOGGER_DEBUG);
3550 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
3554 $contact["uprvkey"] = $r[0]['prvkey'];
3556 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
3560 if (!in_array($r[0]["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE)))
3563 $message = self::construct_like($r[0], $contact);
3564 $message["author_signature"] = self::signature($contact, $message);
3566 // We now store the signature more flexible to dynamically support new fields.
3567 // This will break Diaspora compatibility with Friendica versions prior to 3.5.
3568 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3569 intval($message_id),
3570 dbesc(json_encode($message))
3573 logger('Stored diaspora like signature');
3578 * @brief Stores the signature for comments that are created on our system
3580 * @param array $item The item array of the comment
3581 * @param array $contact The contact array of the item owner
3582 * @param string $uprvkey The private key of the sender
3583 * @param int $message_id The message id of the comment
3585 * @return bool Success
3587 public static function store_comment_signature($item, $contact, $uprvkey, $message_id) {
3589 if ($uprvkey == "") {
3590 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
3594 $contact["uprvkey"] = $uprvkey;
3596 $message = self::construct_comment($item, $contact);
3597 $message["author_signature"] = self::signature($contact, $message);
3599 // We now store the signature more flexible to dynamically support new fields.
3600 // This will break Diaspora compatibility with Friendica versions prior to 3.5.
3601 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3602 intval($message_id),
3603 dbesc(json_encode($message))
3606 logger('Stored diaspora comment signature');