3 * @file include/diaspora.php
4 * @brief The implementation of the diaspora protocol
7 require_once("include/items.php");
8 require_once("include/bb2diaspora.php");
9 require_once("include/Scrape.php");
10 require_once("include/Contact.php");
11 require_once("include/Photo.php");
12 require_once("include/socgraph.php");
13 require_once("include/group.php");
14 require_once("include/xml.php");
15 require_once("include/datetime.php");
16 require_once("include/queue_fn.php");
19 * @brief This class contain functions to create and send Diaspora XML files
25 * @brief Return a list of relay servers
27 * This is an experimental Diaspora feature.
29 * @return array of relay servers
31 public static function relay_list() {
33 $serverdata = get_config("system", "relay_server");
34 if ($serverdata == "")
39 $servers = explode(",", $serverdata);
41 foreach($servers AS $server) {
42 $server = trim($server);
43 $batch = $server."/receive/public";
45 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
48 $addr = "relay@".str_replace("http://", "", normalise_link($server));
50 $r = q("INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
51 VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
56 dbesc(normalise_link($server)),
58 dbesc(NETWORK_DIASPORA),
59 intval(CONTACT_IS_FOLLOWER),
60 dbesc(datetime_convert()),
61 dbesc(datetime_convert()),
62 dbesc(datetime_convert())
65 $relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
67 $relay[] = $relais[0];
69 $relay[] = $relais[0];
76 * @brief repairs a signature that was double encoded
78 * The function is unused at the moment. It was copied from the old implementation.
80 * @param string $signature The signature
81 * @param string $handle The handle of the signature owner
82 * @param integer $level This value is only set inside this function to avoid endless loops
84 * @return string the repaired signature
86 private function repair_signature($signature, $handle = "", $level = 1) {
91 if (base64_encode(base64_decode(base64_decode($signature))) == base64_decode($signature)) {
92 $signature = base64_decode($signature);
93 logger("Repaired double encoded signature from Diaspora/Hubzilla handle ".$handle." - level ".$level, LOGGER_DEBUG);
95 // Do a recursive call to be able to fix even multiple levels
97 $signature = self::repair_signature($signature, $handle, ++$level);
104 * @brief verify the envelope and return the verified data
106 * @param string $envelope The magic envelope
108 * @return string verified data
110 private function verify_magic_envelope($envelope) {
112 $basedom = parse_xml_string($envelope, false);
114 if (!is_object($basedom)) {
115 logger("Envelope is no XML file");
119 $children = $basedom->children('http://salmon-protocol.org/ns/magic-env');
121 if (sizeof($children) == 0) {
122 logger("XML has no children");
128 $data = base64url_decode($children->data);
129 $type = $children->data->attributes()->type[0];
131 $encoding = $children->encoding;
133 $alg = $children->alg;
135 $sig = base64url_decode($children->sig);
136 $key_id = $children->sig->attributes()->key_id[0];
138 $handle = base64url_decode($key_id);
140 $b64url_data = base64url_encode($data);
141 $msg = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
143 $signable_data = $msg.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
145 $key = self::key($handle);
147 $verify = rsa_verify($signable_data, $sig, $key);
149 logger('Message did not verify. Discarding.');
157 * @brief: Decodes incoming Diaspora message
159 * @param array $importer Array of the importer user
160 * @param string $xml urldecoded Diaspora salmon
163 * 'message' -> decoded Diaspora XML message
164 * 'author' -> author diaspora handle
165 * 'key' -> author public key (converted to pkcs#8)
167 public static function decode($importer, $xml) {
170 $basedom = parse_xml_string($xml);
172 if (!is_object($basedom))
175 $children = $basedom->children('https://joindiaspora.com/protocol');
177 if($children->header) {
179 $author_link = str_replace('acct:','',$children->header->author_id);
182 $encrypted_header = json_decode(base64_decode($children->encrypted_header));
184 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
185 $ciphertext = base64_decode($encrypted_header->ciphertext);
187 $outer_key_bundle = '';
188 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
190 $j_outer_key_bundle = json_decode($outer_key_bundle);
192 $outer_iv = base64_decode($j_outer_key_bundle->iv);
193 $outer_key = base64_decode($j_outer_key_bundle->key);
195 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
198 $decrypted = pkcs5_unpad($decrypted);
200 logger('decrypted: '.$decrypted, LOGGER_DEBUG);
201 $idom = parse_xml_string($decrypted,false);
203 $inner_iv = base64_decode($idom->iv);
204 $inner_aes_key = base64_decode($idom->aes_key);
206 $author_link = str_replace('acct:','',$idom->author_id);
209 $dom = $basedom->children(NAMESPACE_SALMON_ME);
211 // figure out where in the DOM tree our data is hiding
213 if($dom->provenance->data)
214 $base = $dom->provenance;
215 elseif($dom->env->data)
221 logger('unable to locate salmon data in xml');
222 http_status_exit(400);
226 // Stash the signature away for now. We have to find their key or it won't be good for anything.
227 $signature = base64url_decode($base->sig);
231 // strip whitespace so our data element will return to one big base64 blob
232 $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
235 // stash away some other stuff for later
237 $type = $base->data[0]->attributes()->type[0];
238 $keyhash = $base->sig[0]->attributes()->keyhash[0];
239 $encoding = $base->encoding;
243 $signed_data = $data.'.'.base64url_encode($type).'.'.base64url_encode($encoding).'.'.base64url_encode($alg);
247 $data = base64url_decode($data);
251 $inner_decrypted = $data;
254 // Decode the encrypted blob
256 $inner_encrypted = base64_decode($data);
257 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
258 $inner_decrypted = pkcs5_unpad($inner_decrypted);
262 logger('Could not retrieve author URI.');
263 http_status_exit(400);
265 // Once we have the author URI, go to the web and try to find their public key
266 // (first this will look it up locally if it is in the fcontact cache)
267 // This will also convert diaspora public key from pkcs#1 to pkcs#8
269 logger('Fetching key for '.$author_link);
270 $key = self::key($author_link);
273 logger('Could not retrieve author key.');
274 http_status_exit(400);
277 $verify = rsa_verify($signed_data,$signature,$key);
280 logger('Message did not verify. Discarding.');
281 http_status_exit(400);
284 logger('Message verified.');
286 return array('message' => (string)$inner_decrypted,
287 'author' => unxmlify($author_link),
288 'key' => (string)$key);
293 * @brief Dispatches public messages and find the fitting receivers
295 * @param array $msg The post that will be dispatched
297 * @return int The message id of the generated message, "true" or "false" if there was an error
299 public static function dispatch_public($msg) {
301 $enabled = intval(get_config("system", "diaspora_enabled"));
303 logger("diaspora is disabled");
307 // Use a dummy importer to import the data for the public copy
308 $importer = array("uid" => 0, "page-flags" => PAGE_FREELOVE);
309 $message_id = self::dispatch($importer,$msg);
311 // Now distribute it to the followers
312 $r = q("SELECT `user`.* FROM `user` WHERE `user`.`uid` IN
313 (SELECT `contact`.`uid` FROM `contact` WHERE `contact`.`network` = '%s' AND `contact`.`addr` = '%s')
314 AND NOT `account_expired` AND NOT `account_removed`",
315 dbesc(NETWORK_DIASPORA),
316 dbesc($msg["author"])
320 logger("delivering to: ".$rr["username"]);
321 self::dispatch($rr,$msg);
324 logger("No subscribers for ".$msg["author"]." ".print_r($msg, true));
330 * @brief Dispatches the different message types to the different functions
332 * @param array $importer Array of the importer user
333 * @param array $msg The post that will be dispatched
335 * @return int The message id of the generated message, "true" or "false" if there was an error
337 public static function dispatch($importer, $msg) {
339 // The sender is the handle of the contact that sent the message.
340 // This will often be different with relayed messages (for example "like" and "comment")
341 $sender = $msg["author"];
343 if (!diaspora::valid_posting($msg, $fields)) {
344 logger("Invalid posting");
348 $type = $fields->getName();
350 logger("Received message type ".$type." from ".$sender." for user ".$importer["uid"], LOGGER_DEBUG);
353 case "account_deletion":
354 return self::receive_account_deletion($importer, $fields);
357 return self::receive_comment($importer, $sender, $fields, $msg["message"]);
360 return self::receive_contact_request($importer, $fields);
363 return self::receive_conversation($importer, $msg, $fields);
366 return self::receive_like($importer, $sender, $fields);
369 return self::receive_message($importer, $fields);
371 case "participation": // Not implemented
372 return self::receive_participation($importer, $fields);
374 case "photo": // Not implemented
375 return self::receive_photo($importer, $fields);
377 case "poll_participation": // Not implemented
378 return self::receive_poll_participation($importer, $fields);
381 return self::receive_profile($importer, $fields);
384 return self::receive_reshare($importer, $fields, $msg["message"]);
387 return self::receive_retraction($importer, $sender, $fields);
389 case "status_message":
390 return self::receive_status_message($importer, $fields, $msg["message"]);
393 logger("Unknown message type ".$type);
401 * @brief Checks if a posting is valid and fetches the data fields.
403 * This function does not only check the signature.
404 * It also does the conversion between the old and the new diaspora format.
406 * @param array $msg Array with the XML, the sender handle and the sender signature
407 * @param object $fields SimpleXML object that contains the posting when it is valid
409 * @return bool Is the posting valid?
411 private function valid_posting($msg, &$fields) {
413 $data = parse_xml_string($msg["message"], false);
415 if (!is_object($data)) {
416 logger("No valid XML ".$msg["message"], LOGGER_DEBUG);
420 $first_child = $data->getName();
422 // Is this the new or the old version?
423 if ($data->getName() == "XML") {
425 foreach ($data->post->children() as $child)
432 $type = $element->getName();
435 // All retractions are handled identically from now on.
436 // In the new version there will only be "retraction".
437 if (in_array($type, array("signed_retraction", "relayable_retraction")))
438 $type = "retraction";
440 if ($type == "request")
443 $fields = new SimpleXMLElement("<".$type."/>");
447 foreach ($element->children() AS $fieldname => $entry) {
449 // Translation for the old XML structure
450 if ($fieldname == "diaspora_handle")
451 $fieldname = "author";
453 if ($fieldname == "participant_handles")
454 $fieldname = "participants";
456 if (in_array($type, array("like", "participation"))) {
457 if ($fieldname == "target_type")
458 $fieldname = "parent_type";
461 if ($fieldname == "sender_handle")
462 $fieldname = "author";
464 if ($fieldname == "recipient_handle")
465 $fieldname = "recipient";
467 if ($fieldname == "root_diaspora_id")
468 $fieldname = "root_author";
470 if ($type == "retraction") {
471 if ($fieldname == "post_guid")
472 $fieldname = "target_guid";
474 if ($fieldname == "type")
475 $fieldname = "target_type";
479 if (($fieldname == "author_signature") AND ($entry != ""))
480 $author_signature = base64_decode($entry);
481 elseif (($fieldname == "parent_author_signature") AND ($entry != ""))
482 $parent_author_signature = base64_decode($entry);
483 elseif (!in_array($fieldname, array("author_signature", "parent_author_signature", "target_author_signature"))) {
484 if ($signed_data != "") {
486 $signed_data_parent .= ";";
489 $signed_data .= $entry;
491 if (!in_array($fieldname, array("parent_author_signature", "target_author_signature")) OR
492 ($orig_type == "relayable_retraction"))
493 xml::copy($entry, $fields, $fieldname);
496 // This is something that shouldn't happen at all.
497 if (in_array($type, array("status_message", "reshare", "profile")))
498 if ($msg["author"] != $fields->author) {
499 logger("Message handle is not the same as envelope sender. Quitting this message.");
503 // Only some message types have signatures. So we quit here for the other types.
504 if (!in_array($type, array("comment", "message", "like")))
507 // No author_signature? This is a must, so we quit.
508 if (!isset($author_signature)) {
509 logger("No author signature for type ".$type." - Message: ".$msg["message"], LOGGER_DEBUG);
513 if (isset($parent_author_signature)) {
514 $key = self::key($msg["author"]);
516 if (!rsa_verify($signed_data, $parent_author_signature, $key, "sha256")) {
517 logger("No valid parent author signature for author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$parent_author_signature, LOGGER_DEBUG);
522 $key = self::key($fields->author);
524 if (!rsa_verify($signed_data, $author_signature, $key, "sha256")) {
525 logger("No valid author signature for author ".$msg["author"]. " in type ".$type." - signed data: ".$signed_data." - Message: ".$msg["message"]." - Signature ".$author_signature, LOGGER_DEBUG);
532 * @brief Fetches the public key for a given handle
534 * @param string $handle The handle
536 * @return string The public key
538 private function key($handle) {
539 $handle = strval($handle);
541 logger("Fetching diaspora key for: ".$handle);
543 $r = self::person_by_handle($handle);
551 * @brief Fetches data for a given handle
553 * @param string $handle The handle
555 * @return array the queried data
557 private function person_by_handle($handle) {
559 $r = q("SELECT * FROM `fcontact` WHERE `network` = '%s' AND `addr` = '%s' LIMIT 1",
560 dbesc(NETWORK_DIASPORA),
565 logger("In cache ".print_r($r,true), LOGGER_DEBUG);
567 // update record occasionally so it doesn't get stale
568 $d = strtotime($person["updated"]." +00:00");
569 if ($d < strtotime("now - 14 days"))
573 if (!$person OR $update) {
574 logger("create or refresh", LOGGER_DEBUG);
575 $r = probe_url($handle, PROBE_DIASPORA);
577 // Note that Friendica contacts will return a "Diaspora person"
578 // if Diaspora connectivity is enabled on their server
579 if ($r AND ($r["network"] === NETWORK_DIASPORA)) {
580 self::add_fcontact($r, $update);
588 * @brief Updates the fcontact table
590 * @param array $arr The fcontact data
591 * @param bool $update Update or insert?
593 * @return string The id of the fcontact entry
595 private function add_fcontact($arr, $update = false) {
598 $r = q("UPDATE `fcontact` SET
611 WHERE `url` = '%s' AND `network` = '%s'",
613 dbesc($arr["photo"]),
614 dbesc($arr["request"]),
617 dbesc($arr["batch"]),
618 dbesc($arr["notify"]),
620 dbesc($arr["confirm"]),
621 dbesc($arr["alias"]),
622 dbesc($arr["pubkey"]),
623 dbesc(datetime_convert()),
625 dbesc($arr["network"])
628 $r = q("INSERT INTO `fcontact` (`url`,`name`,`photo`,`request`,`nick`,`addr`,
629 `batch`, `notify`,`poll`,`confirm`,`network`,`alias`,`pubkey`,`updated`)
630 VALUES ('%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s','%s')",
633 dbesc($arr["photo"]),
634 dbesc($arr["request"]),
637 dbesc($arr["batch"]),
638 dbesc($arr["notify"]),
640 dbesc($arr["confirm"]),
641 dbesc($arr["network"]),
642 dbesc($arr["alias"]),
643 dbesc($arr["pubkey"]),
644 dbesc(datetime_convert())
652 * @brief get a handle (user@domain.tld) from a given contact id or gcontact id
654 * @param int $contact_id The id in the contact table
655 * @param int $gcontact_id The id in the gcontact table
657 * @return string the handle
659 public static function handle_from_contact($contact_id, $gcontact_id = 0) {
662 logger("contact id is ".$contact_id." - gcontact id is ".$gcontact_id, LOGGER_DEBUG);
664 if ($gcontact_id != 0) {
665 $r = q("SELECT `addr` FROM `gcontact` WHERE `id` = %d AND `addr` != ''",
666 intval($gcontact_id));
668 return $r[0]["addr"];
671 $r = q("SELECT `network`, `addr`, `self`, `url`, `nick` FROM `contact` WHERE `id` = %d",
672 intval($contact_id));
676 logger("contact 'self' = ".$contact['self']." 'url' = ".$contact['url'], LOGGER_DEBUG);
678 if($contact['addr'] != "")
679 $handle = $contact['addr'];
681 $baseurl_start = strpos($contact['url'],'://') + 3;
682 $baseurl_length = strpos($contact['url'],'/profile') - $baseurl_start; // allows installations in a subdirectory--not sure how Diaspora will handle
683 $baseurl = substr($contact['url'], $baseurl_start, $baseurl_length);
684 $handle = $contact['nick'].'@'.$baseurl;
692 * @brief Get a contact id for a given handle
694 * @param int $uid The user id
695 * @param string $handle The handle in the format user@domain.tld
697 * @return The contact id
699 private function contact_by_handle($uid, $handle) {
700 $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `addr` = '%s' LIMIT 1",
708 $handle_parts = explode("@", $handle);
709 $nurl_sql = "%%://".$handle_parts[1]."%%/profile/".$handle_parts[0];
710 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `nurl` LIKE '%s' LIMIT 1",
722 * @brief Check if posting is allowed for this contact
724 * @param array $importer Array of the importer user
725 * @param array $contact The contact that is checked
726 * @param bool $is_comment Is the check for a comment?
728 * @return bool is the contact allowed to post?
730 private function post_allow($importer, $contact, $is_comment = false) {
732 // perhaps we were already sharing with this person. Now they're sharing with us.
733 // That makes us friends.
734 // Normally this should have handled by getting a request - but this could get lost
735 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
736 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
737 intval(CONTACT_IS_FRIEND),
738 intval($contact["id"]),
739 intval($importer["uid"])
741 $contact["rel"] = CONTACT_IS_FRIEND;
742 logger("defining user ".$contact["nick"]." as friend");
745 if(($contact["blocked"]) || ($contact["readonly"]) || ($contact["archive"]))
747 if($contact["rel"] == CONTACT_IS_SHARING || $contact["rel"] == CONTACT_IS_FRIEND)
749 if($contact["rel"] == CONTACT_IS_FOLLOWER)
750 if(($importer["page-flags"] == PAGE_COMMUNITY) OR $is_comment)
753 // Messages for the global users are always accepted
754 if ($importer["uid"] == 0)
761 * @brief Fetches the contact id for a handle and checks if posting is allowed
763 * @param array $importer Array of the importer user
764 * @param string $handle The checked handle in the format user@domain.tld
765 * @param bool $is_comment Is the check for a comment?
767 * @return array The contact data
769 private function allowed_contact_by_handle($importer, $handle, $is_comment = false) {
770 $contact = self::contact_by_handle($importer["uid"], $handle);
772 logger("A Contact for handle ".$handle." and user ".$importer["uid"]." was not found");
776 if (!self::post_allow($importer, $contact, $is_comment)) {
777 logger("The handle: ".$handle." is not allowed to post to user ".$importer["uid"]);
784 * @brief Does the message already exists on the system?
786 * @param int $uid The user id
787 * @param string $guid The guid of the message
789 * @return int|bool message id if the message already was stored into the system - or false.
791 private function message_exists($uid, $guid) {
792 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
798 logger("message ".$guid." already exists for user ".$uid);
806 * @brief Checks for links to posts in a message
808 * @param array $item The item array
810 private function fetch_guid($item) {
811 preg_replace_callback("&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
812 function ($match) use ($item){
813 return(self::fetch_guid_sub($match, $item));
818 * @brief sub function of "fetch_guid" which checks for links in messages
820 * @param array $match array containing a link that has to be checked for a message link
821 * @param array $item The item array
823 private function fetch_guid_sub($match, $item) {
824 if (!self::store_by_guid($match[1], $item["author-link"]))
825 self::store_by_guid($match[1], $item["owner-link"]);
829 * @brief Fetches an item with a given guid from a given server
831 * @param string $guid the message guid
832 * @param string $server The server address
833 * @param int $uid The user id of the user
835 * @return int the message id of the stored message or false
837 private function store_by_guid($guid, $server, $uid = 0) {
838 $serverparts = parse_url($server);
839 $server = $serverparts["scheme"]."://".$serverparts["host"];
841 logger("Trying to fetch item ".$guid." from ".$server, LOGGER_DEBUG);
843 $msg = self::message($guid, $server);
848 logger("Successfully fetched item ".$guid." from ".$server, LOGGER_DEBUG);
850 // Now call the dispatcher
851 return self::dispatch_public($msg);
855 * @brief Fetches a message from a server
857 * @param string $guid message guid
858 * @param string $server The url of the server
859 * @param int $level Endless loop prevention
862 * 'message' => The message XML
863 * 'author' => The author handle
864 * 'key' => The public key of the author
866 private function message($guid, $server, $level = 0) {
871 // This will work for new Diaspora servers and Friendica servers from 3.5
872 $source_url = $server."/fetch/post/".$guid;
873 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
875 $envelope = fetch_url($source_url);
877 logger("Envelope was fetched.", LOGGER_DEBUG);
878 $x = self::verify_magic_envelope($envelope);
880 logger("Envelope could not be verified.", LOGGER_DEBUG);
883 logger("Envelope was verified.", LOGGER_DEBUG);
885 // This will work for older Diaspora and Friendica servers
886 $source_url = $server."/p/".$guid.".xml";
887 logger("Fetch post from ".$source_url, LOGGER_DEBUG);
889 $x = fetch_url($source_url);
894 $source_xml = parse_xml_string($x, false);
896 if (!is_object($source_xml))
899 if ($source_xml->post->reshare) {
900 // Reshare of a reshare - old Diaspora version
901 logger("Message is a reshare", LOGGER_DEBUG);
902 return self::message($source_xml->post->reshare->root_guid, $server, ++$level);
903 } elseif ($source_xml->getName() == "reshare") {
904 // Reshare of a reshare - new Diaspora version
905 logger("Message is a new reshare", LOGGER_DEBUG);
906 return self::message($source_xml->root_guid, $server, ++$level);
911 // Fetch the author - for the old and the new Diaspora version
912 if ($source_xml->post->status_message->diaspora_handle)
913 $author = (string)$source_xml->post->status_message->diaspora_handle;
914 elseif ($source_xml->author AND ($source_xml->getName() == "status_message"))
915 $author = (string)$source_xml->author;
917 // If this isn't a "status_message" then quit
919 logger("Message doesn't seem to be a status message", LOGGER_DEBUG);
923 $msg = array("message" => $x, "author" => $author);
925 $msg["key"] = self::key($msg["author"]);
931 * @brief Fetches the item record of a given guid
933 * @param int $uid The user id
934 * @param string $guid message guid
935 * @param string $author The handle of the item
936 * @param array $contact The contact of the item owner
938 * @return array the item record
940 private function parent_item($uid, $guid, $author, $contact) {
941 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
942 `author-name`, `author-link`, `author-avatar`,
943 `owner-name`, `owner-link`, `owner-avatar`
944 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
945 intval($uid), dbesc($guid));
948 $result = self::store_by_guid($guid, $contact["url"], $uid);
951 $person = self::person_by_handle($author);
952 $result = self::store_by_guid($guid, $person["url"], $uid);
956 logger("Fetched missing item ".$guid." - result: ".$result, LOGGER_DEBUG);
958 $r = q("SELECT `id`, `body`, `wall`, `uri`, `private`, `origin`,
959 `author-name`, `author-link`, `author-avatar`,
960 `owner-name`, `owner-link`, `owner-avatar`
961 FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
962 intval($uid), dbesc($guid));
967 logger("parent item not found: parent: ".$guid." - user: ".$uid);
970 logger("parent item found: parent: ".$guid." - user: ".$uid);
976 * @brief returns contact details
978 * @param array $contact The default contact if the person isn't found
979 * @param array $person The record of the person
980 * @param int $uid The user id
983 * 'cid' => contact id
984 * 'network' => network type
986 private function author_contact_by_url($contact, $person, $uid) {
988 $r = q("SELECT `id`, `network` FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
989 dbesc(normalise_link($person["url"])), intval($uid));
992 $network = $r[0]["network"];
994 $cid = $contact["id"];
995 $network = NETWORK_DIASPORA;
998 return (array("cid" => $cid, "network" => $network));
1002 * @brief Is the profile a hubzilla profile?
1004 * @param string $url The profile link
1006 * @return bool is it a hubzilla server?
1008 public static function is_redmatrix($url) {
1009 return(strstr($url, "/channel/"));
1013 * @brief Generate a post link with a given handle and message guid
1015 * @param string $addr The user handle
1016 * @param string $guid message guid
1018 * @return string the post link
1020 private function plink($addr, $guid) {
1021 $r = q("SELECT `url`, `nick`, `network` FROM `fcontact` WHERE `addr`='%s' LIMIT 1", dbesc($addr));
1025 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1027 // Friendica contacts are often detected as Diaspora contacts in the "fcontact" table
1028 // So we try another way as well.
1029 $s = q("SELECT `network` FROM `gcontact` WHERE `nurl`='%s' LIMIT 1", dbesc(normalise_link($r[0]["url"])));
1031 $r[0]["network"] = $s[0]["network"];
1033 if ($r[0]["network"] == NETWORK_DFRN)
1034 return(str_replace("/profile/".$r[0]["nick"]."/", "/display/".$guid, $r[0]["url"]."/"));
1036 if (self::is_redmatrix($r[0]["url"]))
1037 return $r[0]["url"]."/?f=&mid=".$guid;
1039 return "https://".substr($addr,strpos($addr,"@")+1)."/posts/".$guid;
1043 * @brief Processes an account deletion
1045 * @param array $importer Array of the importer user
1046 * @param object $data The message object
1048 * @return bool Success
1050 private function receive_account_deletion($importer, $data) {
1052 /// @todo Account deletion should remove the contact from the global contacts as well
1054 $author = notags(unxmlify($data->author));
1056 $contact = self::contact_by_handle($importer["uid"], $author);
1058 logger("cannot find contact for author: ".$author);
1062 // We now remove the contact
1063 contact_remove($contact["id"]);
1068 * @brief Fetch the uri from our database if we already have this item (maybe from ourselves)
1070 * @param string $author Author handle
1071 * @param string $guid Message guid
1073 * @return string The constructed uri or the one from our database
1075 private function get_uri_from_guid($author, $guid) {
1077 $r = q("SELECT `uri` FROM `item` WHERE `guid` = '%s' LIMIT 1", dbesc($guid));
1079 return $r[0]["uri"];
1081 return $author.":".$guid;
1085 * @brief Processes an incoming comment
1087 * @param array $importer Array of the importer user
1088 * @param string $sender The sender of the message
1089 * @param object $data The message object
1090 * @param string $xml The original XML of the message
1092 * @return int The message id of the generated comment or "false" if there was an error
1094 private function receive_comment($importer, $sender, $data, $xml) {
1095 $guid = notags(unxmlify($data->guid));
1096 $parent_guid = notags(unxmlify($data->parent_guid));
1097 $text = unxmlify($data->text);
1098 $author = notags(unxmlify($data->author));
1100 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1104 $message_id = self::message_exists($importer["uid"], $guid);
1108 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1112 $person = self::person_by_handle($author);
1113 if (!is_array($person)) {
1114 logger("unable to find author details");
1118 // Fetch the contact id - if we know this contact
1119 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1121 $datarray = array();
1123 $datarray["uid"] = $importer["uid"];
1124 $datarray["contact-id"] = $author_contact["cid"];
1125 $datarray["network"] = $author_contact["network"];
1127 $datarray["author-name"] = $person["name"];
1128 $datarray["author-link"] = $person["url"];
1129 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1131 $datarray["owner-name"] = $contact["name"];
1132 $datarray["owner-link"] = $contact["url"];
1133 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1135 $datarray["guid"] = $guid;
1136 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1138 $datarray["type"] = "remote-comment";
1139 $datarray["verb"] = ACTIVITY_POST;
1140 $datarray["gravity"] = GRAVITY_COMMENT;
1141 $datarray["parent-uri"] = $parent_item["uri"];
1143 $datarray["object-type"] = ACTIVITY_OBJ_COMMENT;
1144 $datarray["object"] = $xml;
1146 $datarray["body"] = diaspora2bb($text);
1148 self::fetch_guid($datarray);
1150 $message_id = item_store($datarray);
1153 logger("Stored comment ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1155 // If we are the origin of the parent we store the original data and notify our followers
1156 if($message_id AND $parent_item["origin"]) {
1158 // Formerly we stored the signed text, the signature and the author in different fields.
1159 // We now store the raw data so that we are more flexible.
1160 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1161 intval($message_id),
1162 dbesc(json_encode($data))
1166 proc_run("php", "include/notifier.php", "comment-import", $message_id);
1173 * @brief processes and stores private messages
1175 * @param array $importer Array of the importer user
1176 * @param array $contact The contact of the message
1177 * @param object $data The message object
1178 * @param array $msg Array of the processed message, author handle and key
1179 * @param object $mesg The private message
1180 * @param array $conversation The conversation record to which this message belongs
1182 * @return bool "true" if it was successful
1184 private function receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation) {
1185 $guid = notags(unxmlify($data->guid));
1186 $subject = notags(unxmlify($data->subject));
1187 $author = notags(unxmlify($data->author));
1191 $msg_guid = notags(unxmlify($mesg->guid));
1192 $msg_parent_guid = notags(unxmlify($mesg->parent_guid));
1193 $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature));
1194 $msg_author_signature = notags(unxmlify($mesg->author_signature));
1195 $msg_text = unxmlify($mesg->text);
1196 $msg_created_at = datetime_convert("UTC", "UTC", notags(unxmlify($mesg->created_at)));
1198 // "diaspora_handle" is the element name from the old version
1199 // "author" is the element name from the new version
1201 $msg_author = notags(unxmlify($mesg->author));
1202 elseif ($mesg->diaspora_handle)
1203 $msg_author = notags(unxmlify($mesg->diaspora_handle));
1207 $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid));
1209 if($msg_conversation_guid != $guid) {
1210 logger("message conversation guid does not belong to the current conversation.");
1214 $body = diaspora2bb($msg_text);
1215 $message_uri = $msg_author.":".$msg_guid;
1217 $author_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1219 $author_signature = base64_decode($msg_author_signature);
1221 if(strcasecmp($msg_author,$msg["author"]) == 0) {
1225 $person = self::person_by_handle($msg_author);
1227 if (is_array($person) && x($person, "pubkey"))
1228 $key = $person["pubkey"];
1230 logger("unable to find author details");
1235 if (!rsa_verify($author_signed_data, $author_signature, $key, "sha256")) {
1236 logger("verification failed.");
1240 if($msg_parent_author_signature) {
1241 $owner_signed_data = $msg_guid.";".$msg_parent_guid.";".$msg_text.";".unxmlify($mesg->created_at).";".$msg_author.";".$msg_conversation_guid;
1243 $parent_author_signature = base64_decode($msg_parent_author_signature);
1247 if (!rsa_verify($owner_signed_data, $parent_author_signature, $key, "sha256")) {
1248 logger("owner verification failed.");
1253 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' LIMIT 1",
1257 logger("duplicate message already delivered.", LOGGER_DEBUG);
1261 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1262 VALUES (%d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1263 intval($importer["uid"]),
1265 intval($conversation["id"]),
1266 dbesc($person["name"]),
1267 dbesc($person["photo"]),
1268 dbesc($person["url"]),
1269 intval($contact["id"]),
1274 dbesc($message_uri),
1275 dbesc($author.":".$guid),
1276 dbesc($msg_created_at)
1279 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1280 dbesc(datetime_convert()),
1281 intval($conversation["id"])
1285 "type" => NOTIFY_MAIL,
1286 "notify_flags" => $importer["notify-flags"],
1287 "language" => $importer["language"],
1288 "to_name" => $importer["username"],
1289 "to_email" => $importer["email"],
1290 "uid" =>$importer["uid"],
1291 "item" => array("subject" => $subject, "body" => $body),
1292 "source_name" => $person["name"],
1293 "source_link" => $person["url"],
1294 "source_photo" => $person["thumb"],
1295 "verb" => ACTIVITY_POST,
1302 * @brief Processes new private messages (answers to private messages are processed elsewhere)
1304 * @param array $importer Array of the importer user
1305 * @param array $msg Array of the processed message, author handle and key
1306 * @param object $data The message object
1308 * @return bool Success
1310 private function receive_conversation($importer, $msg, $data) {
1311 $guid = notags(unxmlify($data->guid));
1312 $subject = notags(unxmlify($data->subject));
1313 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1314 $author = notags(unxmlify($data->author));
1315 $participants = notags(unxmlify($data->participants));
1317 $messages = $data->message;
1319 if (!count($messages)) {
1320 logger("empty conversation");
1324 $contact = self::allowed_contact_by_handle($importer, $msg["author"], true);
1328 $conversation = null;
1330 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1331 intval($importer["uid"]),
1335 $conversation = $c[0];
1337 $r = q("INSERT INTO `conv` (`uid`, `guid`, `creator`, `created`, `updated`, `subject`, `recips`)
1338 VALUES (%d, '%s', '%s', '%s', '%s', '%s', '%s')",
1339 intval($importer["uid"]),
1342 dbesc(datetime_convert("UTC", "UTC", $created_at)),
1343 dbesc(datetime_convert()),
1345 dbesc($participants)
1348 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1349 intval($importer["uid"]),
1354 $conversation = $c[0];
1356 if (!$conversation) {
1357 logger("unable to create conversation.");
1361 foreach($messages as $mesg)
1362 self::receive_conversation_message($importer, $contact, $data, $msg, $mesg, $conversation);
1368 * @brief Creates the body for a "like" message
1370 * @param array $contact The contact that send us the "like"
1371 * @param array $parent_item The item array of the parent item
1372 * @param string $guid message guid
1374 * @return string the body
1376 private function construct_like_body($contact, $parent_item, $guid) {
1377 $bodyverb = t('%1$s likes %2$s\'s %3$s');
1379 $ulink = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1380 $alink = "[url=".$parent_item["author-link"]."]".$parent_item["author-name"]."[/url]";
1381 $plink = "[url=".App::get_baseurl()."/display/".urlencode($guid)."]".t("status")."[/url]";
1383 return sprintf($bodyverb, $ulink, $alink, $plink);
1387 * @brief Creates a XML object for a "like"
1389 * @param array $importer Array of the importer user
1390 * @param array $parent_item The item array of the parent item
1392 * @return string The XML
1394 private function construct_like_object($importer, $parent_item) {
1395 $objtype = ACTIVITY_OBJ_NOTE;
1396 $link = '<link rel="alternate" type="text/html" href="'.App::get_baseurl()."/display/".$importer["nickname"]."/".$parent_item["id"].'" />';
1397 $parent_body = $parent_item["body"];
1399 $xmldata = array("object" => array("type" => $objtype,
1401 "id" => $parent_item["uri"],
1404 "content" => $parent_body));
1406 return xml::from_array($xmldata, $xml, true);
1410 * @brief Processes "like" messages
1412 * @param array $importer Array of the importer user
1413 * @param string $sender The sender of the message
1414 * @param object $data The message object
1416 * @return int The message id of the generated like or "false" if there was an error
1418 private function receive_like($importer, $sender, $data) {
1419 $positive = notags(unxmlify($data->positive));
1420 $guid = notags(unxmlify($data->guid));
1421 $parent_type = notags(unxmlify($data->parent_type));
1422 $parent_guid = notags(unxmlify($data->parent_guid));
1423 $author = notags(unxmlify($data->author));
1425 // likes on comments aren't supported by Diaspora - only on posts
1426 // But maybe this will be supported in the future, so we will accept it.
1427 if (!in_array($parent_type, array("Post", "Comment")))
1430 $contact = self::allowed_contact_by_handle($importer, $sender, true);
1434 $message_id = self::message_exists($importer["uid"], $guid);
1438 $parent_item = self::parent_item($importer["uid"], $parent_guid, $author, $contact);
1442 $person = self::person_by_handle($author);
1443 if (!is_array($person)) {
1444 logger("unable to find author details");
1448 // Fetch the contact id - if we know this contact
1449 $author_contact = self::author_contact_by_url($contact, $person, $importer["uid"]);
1451 // "positive" = "false" would be a Dislike - wich isn't currently supported by Diaspora
1452 // We would accept this anyhow.
1453 if ($positive == "true")
1454 $verb = ACTIVITY_LIKE;
1456 $verb = ACTIVITY_DISLIKE;
1458 $datarray = array();
1460 $datarray["uid"] = $importer["uid"];
1461 $datarray["contact-id"] = $author_contact["cid"];
1462 $datarray["network"] = $author_contact["network"];
1464 $datarray["author-name"] = $person["name"];
1465 $datarray["author-link"] = $person["url"];
1466 $datarray["author-avatar"] = ((x($person,"thumb")) ? $person["thumb"] : $person["photo"]);
1468 $datarray["owner-name"] = $contact["name"];
1469 $datarray["owner-link"] = $contact["url"];
1470 $datarray["owner-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
1472 $datarray["guid"] = $guid;
1473 $datarray["uri"] = self::get_uri_from_guid($author, $guid);
1475 $datarray["type"] = "activity";
1476 $datarray["verb"] = $verb;
1477 $datarray["gravity"] = GRAVITY_LIKE;
1478 $datarray["parent-uri"] = $parent_item["uri"];
1480 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
1481 $datarray["object"] = self::construct_like_object($importer, $parent_item);
1483 $datarray["body"] = self::construct_like_body($contact, $parent_item, $guid);
1485 $message_id = item_store($datarray);
1488 logger("Stored like ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
1490 // If we are the origin of the parent we store the original data and notify our followers
1491 if($message_id AND $parent_item["origin"]) {
1493 // Formerly we stored the signed text, the signature and the author in different fields.
1494 // We now store the raw data so that we are more flexible.
1495 q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
1496 intval($message_id),
1497 dbesc(json_encode($data))
1501 proc_run("php", "include/notifier.php", "comment-import", $message_id);
1508 * @brief Processes private messages
1510 * @param array $importer Array of the importer user
1511 * @param object $data The message object
1513 * @return bool Success?
1515 private function receive_message($importer, $data) {
1516 $guid = notags(unxmlify($data->guid));
1517 $parent_guid = notags(unxmlify($data->parent_guid));
1518 $text = unxmlify($data->text);
1519 $created_at = datetime_convert("UTC", "UTC", notags(unxmlify($data->created_at)));
1520 $author = notags(unxmlify($data->author));
1521 $conversation_guid = notags(unxmlify($data->conversation_guid));
1523 $contact = self::allowed_contact_by_handle($importer, $author, true);
1527 $conversation = null;
1529 $c = q("SELECT * FROM `conv` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
1530 intval($importer["uid"]),
1531 dbesc($conversation_guid)
1534 $conversation = $c[0];
1536 logger("conversation not available.");
1542 $body = diaspora2bb($text);
1543 $message_uri = $author.":".$guid;
1545 $person = self::person_by_handle($author);
1547 logger("unable to find author details");
1551 $r = q("SELECT `id` FROM `mail` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
1552 dbesc($message_uri),
1553 intval($importer["uid"])
1556 logger("duplicate message already delivered.", LOGGER_DEBUG);
1560 q("INSERT INTO `mail` (`uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`)
1561 VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')",
1562 intval($importer["uid"]),
1564 intval($conversation["id"]),
1565 dbesc($person["name"]),
1566 dbesc($person["photo"]),
1567 dbesc($person["url"]),
1568 intval($contact["id"]),
1569 dbesc($conversation["subject"]),
1573 dbesc($message_uri),
1574 dbesc($author.":".$parent_guid),
1578 q("UPDATE `conv` SET `updated` = '%s' WHERE `id` = %d",
1579 dbesc(datetime_convert()),
1580 intval($conversation["id"])
1587 * @brief Processes participations - unsupported by now
1589 * @param array $importer Array of the importer user
1590 * @param object $data The message object
1592 * @return bool always true
1594 private function receive_participation($importer, $data) {
1595 // I'm not sure if we can fully support this message type
1600 * @brief Processes photos - unneeded
1602 * @param array $importer Array of the importer user
1603 * @param object $data The message object
1605 * @return bool always true
1607 private function receive_photo($importer, $data) {
1608 // There doesn't seem to be a reason for this function, since the photo data is transmitted in the status message as well
1613 * @brief Processes poll participations - unssupported
1615 * @param array $importer Array of the importer user
1616 * @param object $data The message object
1618 * @return bool always true
1620 private function receive_poll_participation($importer, $data) {
1621 // We don't support polls by now
1626 * @brief Processes incoming profile updates
1628 * @param array $importer Array of the importer user
1629 * @param object $data The message object
1631 * @return bool Success
1633 private function receive_profile($importer, $data) {
1634 $author = notags(unxmlify($data->author));
1636 $contact = self::contact_by_handle($importer["uid"], $author);
1640 $name = unxmlify($data->first_name).((strlen($data->last_name)) ? " ".unxmlify($data->last_name) : "");
1641 $image_url = unxmlify($data->image_url);
1642 $birthday = unxmlify($data->birthday);
1643 $location = diaspora2bb(unxmlify($data->location));
1644 $about = diaspora2bb(unxmlify($data->bio));
1645 $gender = unxmlify($data->gender);
1646 $searchable = (unxmlify($data->searchable) == "true");
1647 $nsfw = (unxmlify($data->nsfw) == "true");
1648 $tags = unxmlify($data->tag_string);
1650 $tags = explode("#", $tags);
1652 $keywords = array();
1653 foreach ($tags as $tag) {
1654 $tag = trim(strtolower($tag));
1659 $keywords = implode(", ", $keywords);
1661 $handle_parts = explode("@", $author);
1662 $nick = $handle_parts[0];
1665 $name = $handle_parts[0];
1667 if( preg_match("|^https?://|", $image_url) === 0)
1668 $image_url = "http://".$handle_parts[1].$image_url;
1670 update_contact_avatar($image_url, $importer["uid"], $contact["id"]);
1672 // Generic birthday. We don't know the timezone. The year is irrelevant.
1674 $birthday = str_replace("1000", "1901", $birthday);
1676 if ($birthday != "")
1677 $birthday = datetime_convert("UTC", "UTC", $birthday, "Y-m-d");
1679 // this is to prevent multiple birthday notifications in a single year
1680 // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year
1682 if(substr($birthday,5) === substr($contact["bd"],5))
1683 $birthday = $contact["bd"];
1685 $r = q("UPDATE `contact` SET `name` = '%s', `nick` = '%s', `addr` = '%s', `name-date` = '%s', `bd` = '%s',
1686 `location` = '%s', `about` = '%s', `keywords` = '%s', `gender` = '%s' WHERE `id` = %d AND `uid` = %d",
1690 dbesc(datetime_convert()),
1696 intval($contact["id"]),
1697 intval($importer["uid"])
1701 poco_check($contact["url"], $name, NETWORK_DIASPORA, $image_url, $about, $location, $gender, $keywords, "",
1702 datetime_convert(), 2, $contact["id"], $importer["uid"]);
1705 $gcontact = array("url" => $contact["url"], "network" => NETWORK_DIASPORA, "generation" => 2,
1706 "photo" => $image_url, "name" => $name, "location" => $location,
1707 "about" => $about, "birthday" => $birthday, "gender" => $gender,
1708 "addr" => $author, "nick" => $nick, "keywords" => $keywords,
1709 "hide" => !$searchable, "nsfw" => $nsfw);
1711 update_gcontact($gcontact);
1713 logger("Profile of contact ".$contact["id"]." stored for user ".$importer["uid"], LOGGER_DEBUG);
1719 * @brief Processes incoming friend requests
1721 * @param array $importer Array of the importer user
1722 * @param array $contact The contact that send the request
1724 private function receive_request_make_friend($importer, $contact) {
1728 if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
1729 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
1730 intval(CONTACT_IS_FRIEND),
1731 intval($contact["id"]),
1732 intval($importer["uid"])
1735 // send notification
1737 $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1",
1738 intval($importer["uid"])
1741 if($r && !$r[0]["hide-friends"] && !$contact["hidden"] && intval(get_pconfig($importer["uid"], "system", "post_newfriend"))) {
1743 $self = q("SELECT * FROM `contact` WHERE `self` AND `uid` = %d LIMIT 1",
1744 intval($importer["uid"])
1747 // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array
1749 if($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
1752 $arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
1753 $arr["uid"] = $importer["uid"];
1754 $arr["contact-id"] = $self[0]["id"];
1756 $arr["type"] = 'wall';
1757 $arr["gravity"] = 0;
1759 $arr["author-name"] = $arr["owner-name"] = $self[0]["name"];
1760 $arr["author-link"] = $arr["owner-link"] = $self[0]["url"];
1761 $arr["author-avatar"] = $arr["owner-avatar"] = $self[0]["thumb"];
1762 $arr["verb"] = ACTIVITY_FRIEND;
1763 $arr["object-type"] = ACTIVITY_OBJ_PERSON;
1765 $A = "[url=".$self[0]["url"]."]".$self[0]["name"]."[/url]";
1766 $B = "[url=".$contact["url"]."]".$contact["name"]."[/url]";
1767 $BPhoto = "[url=".$contact["url"]."][img]".$contact["thumb"]."[/img][/url]";
1768 $arr["body"] = sprintf(t("%1$s is now friends with %2$s"), $A, $B)."\n\n\n".$Bphoto;
1770 $arr["object"] = self::construct_new_friend_object($contact);
1772 $arr["last-child"] = 1;
1774 $arr["allow_cid"] = $user[0]["allow_cid"];
1775 $arr["allow_gid"] = $user[0]["allow_gid"];
1776 $arr["deny_cid"] = $user[0]["deny_cid"];
1777 $arr["deny_gid"] = $user[0]["deny_gid"];
1779 $i = item_store($arr);
1781 proc_run("php", "include/notifier.php", "activity", $i);
1787 * @brief Creates a XML object for a "new friend" message
1789 * @param array $contact Array of the contact
1791 * @return string The XML
1793 private function construct_new_friend_object($contact) {
1794 $objtype = ACTIVITY_OBJ_PERSON;
1795 $link = '<link rel="alternate" type="text/html" href="'.$contact["url"].'" />'."\n".
1796 '<link rel="photo" type="image/jpeg" href="'.$contact["thumb"].'" />'."\n";
1798 $xmldata = array("object" => array("type" => $objtype,
1799 "title" => $contact["name"],
1800 "id" => $contact["url"]."/".$contact["name"],
1803 return xml::from_array($xmldata, $xml, true);
1807 * @brief Processes incoming sharing notification
1809 * @param array $importer Array of the importer user
1810 * @param object $data The message object
1812 * @return bool Success
1814 private function receive_contact_request($importer, $data) {
1815 $author = unxmlify($data->author);
1816 $recipient = unxmlify($data->recipient);
1818 if (!$author || !$recipient)
1821 // the current protocol version doesn't know these fields
1822 // That means that we will assume their existance
1823 if (isset($data->following))
1824 $following = (unxmlify($data->following) == "true");
1828 if (isset($data->sharing))
1829 $sharing = (unxmlify($data->sharing) == "true");
1833 $contact = self::contact_by_handle($importer["uid"],$author);
1835 // perhaps we were already sharing with this person. Now they're sharing with us.
1836 // That makes us friends.
1838 if ($following AND $sharing) {
1839 self::receive_request_make_friend($importer, $contact);
1841 } else /// @todo Handle all possible variations of adding and retracting of permissions
1845 if (!$following AND $sharing AND in_array($importer["page-flags"], array(PAGE_SOAPBOX, PAGE_NORMAL))) {
1846 logger("Author ".$author." wants to share with us - but doesn't want to listen. Request is ignored.", LOGGER_DEBUG);
1848 } elseif (!$following AND !$sharing) {
1849 logger("Author ".$author." doesn't want anything - and we don't know the author. Request is ignored.", LOGGER_DEBUG);
1853 $ret = self::person_by_handle($author);
1855 if (!$ret || ($ret["network"] != NETWORK_DIASPORA)) {
1856 logger("Cannot resolve diaspora handle ".$author." for ".$recipient);
1860 $batch = (($ret["batch"]) ? $ret["batch"] : implode("/", array_slice(explode("/", $ret["url"]), 0, 3))."/receive/public");
1862 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
1863 VALUES (%d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d)",
1864 intval($importer["uid"]),
1865 dbesc($ret["network"]),
1866 dbesc($ret["addr"]),
1869 dbesc(normalise_link($ret["url"])),
1871 dbesc($ret["name"]),
1872 dbesc($ret["nick"]),
1873 dbesc($ret["photo"]),
1874 dbesc($ret["pubkey"]),
1875 dbesc($ret["notify"]),
1876 dbesc($ret["poll"]),
1881 // find the contact record we just created
1883 $contact_record = self::contact_by_handle($importer["uid"],$author);
1885 if (!$contact_record) {
1886 logger("unable to locate newly created contact record.");
1890 $def_gid = get_default_group($importer['uid'], $ret["network"]);
1892 if(intval($def_gid))
1893 group_add_member($importer["uid"], "", $contact_record["id"], $def_gid);
1895 update_contact_avatar($ret["photo"], $importer['uid'], $contact_record["id"], true);
1897 if($importer["page-flags"] == PAGE_NORMAL) {
1899 $hash = random_string().(string)time(); // Generate a confirm_key
1901 $ret = q("INSERT INTO `intro` (`uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
1902 VALUES (%d, %d, %d, %d, '%s', '%s', '%s')",
1903 intval($importer["uid"]),
1904 intval($contact_record["id"]),
1907 dbesc(t("Sharing notification from Diaspora network")),
1909 dbesc(datetime_convert())
1913 // automatic friend approval
1915 update_contact_avatar($contact_record["photo"],$importer["uid"],$contact_record["id"]);
1917 // technically they are sharing with us (CONTACT_IS_SHARING),
1918 // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX
1919 // we are going to change the relationship and make them a follower.
1921 if (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing AND $following)
1922 $new_relation = CONTACT_IS_FRIEND;
1923 elseif (($importer["page-flags"] == PAGE_FREELOVE) AND $sharing)
1924 $new_relation = CONTACT_IS_SHARING;
1926 $new_relation = CONTACT_IS_FOLLOWER;
1928 $r = q("UPDATE `contact` SET `rel` = %d,
1936 intval($new_relation),
1937 dbesc(datetime_convert()),
1938 dbesc(datetime_convert()),
1939 intval($contact_record["id"])
1942 $u = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1", intval($importer["uid"]));
1944 $ret = self::send_share($u[0], $contact_record);
1951 * @brief Fetches a message with a given guid
1953 * @param string $guid message guid
1954 * @param string $orig_author handle of the original post
1955 * @param string $author handle of the sharer
1957 * @return array The fetched item
1959 private function original_item($guid, $orig_author, $author) {
1961 // Do we already have this item?
1962 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
1963 `author-name`, `author-link`, `author-avatar`
1964 FROM `item` WHERE `guid` = '%s' AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
1968 logger("reshared message ".$guid." already exists on system.");
1970 // Maybe it is already a reshared item?
1971 // Then refetch the content, if it is a reshare from a reshare.
1972 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
1973 if (self::is_reshare($r[0]["body"], true))
1975 elseif (self::is_reshare($r[0]["body"], false)) {
1976 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
1978 // Add OEmbed and other information to the body
1979 $r[0]["body"] = add_page_info_to_body($r[0]["body"], false, true);
1987 $server = "https://".substr($orig_author, strpos($orig_author, "@") + 1);
1988 logger("1st try: reshared message ".$guid." will be fetched from original server: ".$server);
1989 $item_id = self::store_by_guid($guid, $server);
1992 $server = "http://".substr($orig_author, strpos($orig_author, "@") + 1);
1993 logger("2nd try: reshared message ".$guid." will be fetched from original server: ".$server);
1994 $item_id = self::store_by_guid($guid, $server);
1997 // Deactivated by now since there is a risk that someone could manipulate postings through this method
1999 $server = "https://".substr($author, strpos($author, "@") + 1);
2000 logger("3rd try: reshared message ".$guid." will be fetched from sharer's server: ".$server);
2001 $item_id = self::store_by_guid($guid, $server);
2004 $server = "http://".substr($author, strpos($author, "@") + 1);
2005 logger("4th try: reshared message ".$guid." will be fetched from sharer's server: ".$server);
2006 $item_id = self::store_by_guid($guid, $server);
2010 $r = q("SELECT `body`, `tag`, `app`, `created`, `object-type`, `uri`, `guid`,
2011 `author-name`, `author-link`, `author-avatar`
2012 FROM `item` WHERE `id` = %d AND `visible` AND NOT `deleted` AND `body` != '' LIMIT 1",
2016 // If it is a reshared post from another network then reformat to avoid display problems with two share elements
2017 if (self::is_reshare($r[0]["body"], false))
2018 $r[0]["body"] = diaspora2bb(bb2diaspora($r[0]["body"]));
2029 * @brief Processes a reshare message
2031 * @param array $importer Array of the importer user
2032 * @param object $data The message object
2033 * @param string $xml The original XML of the message
2035 * @return int the message id
2037 private function receive_reshare($importer, $data, $xml) {
2038 $root_author = notags(unxmlify($data->root_author));
2039 $root_guid = notags(unxmlify($data->root_guid));
2040 $guid = notags(unxmlify($data->guid));
2041 $author = notags(unxmlify($data->author));
2042 $public = notags(unxmlify($data->public));
2043 $created_at = notags(unxmlify($data->created_at));
2045 $contact = self::allowed_contact_by_handle($importer, $author, false);
2049 $message_id = self::message_exists($importer["uid"], $guid);
2053 $original_item = self::original_item($root_guid, $root_author, $author);
2054 if (!$original_item)
2057 $orig_url = App::get_baseurl()."/display/".$original_item["guid"];
2059 $datarray = array();
2061 $datarray["uid"] = $importer["uid"];
2062 $datarray["contact-id"] = $contact["id"];
2063 $datarray["network"] = NETWORK_DIASPORA;
2065 $datarray["author-name"] = $contact["name"];
2066 $datarray["author-link"] = $contact["url"];
2067 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2069 $datarray["owner-name"] = $datarray["author-name"];
2070 $datarray["owner-link"] = $datarray["author-link"];
2071 $datarray["owner-avatar"] = $datarray["author-avatar"];
2073 $datarray["guid"] = $guid;
2074 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2076 $datarray["verb"] = ACTIVITY_POST;
2077 $datarray["gravity"] = GRAVITY_PARENT;
2079 $datarray["object"] = $xml;
2081 $prefix = share_header($original_item["author-name"], $original_item["author-link"], $original_item["author-avatar"],
2082 $original_item["guid"], $original_item["created"], $orig_url);
2083 $datarray["body"] = $prefix.$original_item["body"]."[/share]";
2085 $datarray["tag"] = $original_item["tag"];
2086 $datarray["app"] = $original_item["app"];
2088 $datarray["plink"] = self::plink($author, $guid);
2089 $datarray["private"] = (($public == "false") ? 1 : 0);
2090 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = datetime_convert("UTC", "UTC", $created_at);
2092 $datarray["object-type"] = $original_item["object-type"];
2094 self::fetch_guid($datarray);
2095 $message_id = item_store($datarray);
2098 logger("Stored reshare ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2104 * @brief Processes retractions
2106 * @param array $importer Array of the importer user
2107 * @param array $contact The contact of the item owner
2108 * @param object $data The message object
2110 * @return bool success
2112 private function item_retraction($importer, $contact, $data) {
2113 $target_type = notags(unxmlify($data->target_type));
2114 $target_guid = notags(unxmlify($data->target_guid));
2115 $author = notags(unxmlify($data->author));
2117 $person = self::person_by_handle($author);
2118 if (!is_array($person)) {
2119 logger("unable to find author detail for ".$author);
2123 $r = q("SELECT `id`, `parent`, `parent-uri`, `author-link` FROM `item` WHERE `guid` = '%s' AND `uid` = %d AND NOT `file` LIKE '%%[%%' LIMIT 1",
2124 dbesc($target_guid),
2125 intval($importer["uid"])
2130 // Only delete it if the author really fits
2131 if (!link_compare($r[0]["author-link"], $person["url"])) {
2132 logger("Item author ".$r[0]["author-link"]." doesn't fit to expected contact ".$person["url"], LOGGER_DEBUG);
2136 // Check if the sender is the thread owner
2137 $p = q("SELECT `id`, `author-link`, `origin` FROM `item` WHERE `id` = %d",
2138 intval($r[0]["parent"]));
2140 // Only delete it if the parent author really fits
2141 if (!link_compare($p[0]["author-link"], $contact["url"]) AND !link_compare($r[0]["author-link"], $contact["url"])) {
2142 logger("Thread author ".$p[0]["author-link"]." and item author ".$r[0]["author-link"]." don't fit to expected contact ".$contact["url"], LOGGER_DEBUG);
2146 // 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
2147 q("UPDATE `item` SET `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' WHERE `id` = %d",
2148 dbesc(datetime_convert()),
2149 dbesc(datetime_convert()),
2152 delete_thread($r[0]["id"], $r[0]["parent-uri"]);
2154 logger("Deleted target ".$target_guid." (".$r[0]["id"].") from user ".$importer["uid"]." parent: ".$p[0]["id"], LOGGER_DEBUG);
2156 // Now check if the retraction needs to be relayed by us
2157 if($p[0]["origin"]) {
2159 proc_run("php", "include/notifier.php", "drop", $r[0]["id"]);
2166 * @brief Receives retraction messages
2168 * @param array $importer Array of the importer user
2169 * @param string $sender The sender of the message
2170 * @param object $data The message object
2172 * @return bool Success
2174 private function receive_retraction($importer, $sender, $data) {
2175 $target_type = notags(unxmlify($data->target_type));
2177 $contact = self::contact_by_handle($importer["uid"], $sender);
2179 logger("cannot find contact for sender: ".$sender." and user ".$importer["uid"]);
2183 logger("Got retraction for ".$target_type.", sender ".$sender." and user ".$importer["uid"], LOGGER_DEBUG);
2185 switch ($target_type) {
2188 case "Post": // "Post" will be supported in a future version
2190 case "StatusMessage":
2191 return self::item_retraction($importer, $contact, $data);;
2195 /// @todo What should we do with an "unshare"?
2196 // Removing the contact isn't correct since we still can read the public items
2197 contact_remove($contact["id"]);
2201 logger("Unknown target type ".$target_type);
2208 * @brief Receives status messages
2210 * @param array $importer Array of the importer user
2211 * @param object $data The message object
2212 * @param string $xml The original XML of the message
2214 * @return int The message id of the newly created item
2216 private function receive_status_message($importer, $data, $xml) {
2218 $raw_message = unxmlify($data->raw_message);
2219 $guid = notags(unxmlify($data->guid));
2220 $author = notags(unxmlify($data->author));
2221 $public = notags(unxmlify($data->public));
2222 $created_at = notags(unxmlify($data->created_at));
2223 $provider_display_name = notags(unxmlify($data->provider_display_name));
2225 /// @todo enable support for polls
2226 //if ($data->poll) {
2227 // foreach ($data->poll AS $poll)
2231 $contact = self::allowed_contact_by_handle($importer, $author, false);
2235 $message_id = self::message_exists($importer["uid"], $guid);
2240 if ($data->location)
2241 foreach ($data->location->children() AS $fieldname => $data)
2242 $address[$fieldname] = notags(unxmlify($data));
2244 $body = diaspora2bb($raw_message);
2246 $datarray = array();
2248 // Attach embedded pictures to the body
2250 foreach ($data->photo AS $photo)
2251 $body = "[img]".unxmlify($photo->remote_photo_path).
2252 unxmlify($photo->remote_photo_name)."[/img]\n".$body;
2254 $datarray["object-type"] = ACTIVITY_OBJ_PHOTO;
2256 $datarray["object-type"] = ACTIVITY_OBJ_NOTE;
2258 // Add OEmbed and other information to the body
2259 if (!self::is_redmatrix($contact["url"]))
2260 $body = add_page_info_to_body($body, false, true);
2263 $datarray["uid"] = $importer["uid"];
2264 $datarray["contact-id"] = $contact["id"];
2265 $datarray["network"] = NETWORK_DIASPORA;
2267 $datarray["author-name"] = $contact["name"];
2268 $datarray["author-link"] = $contact["url"];
2269 $datarray["author-avatar"] = ((x($contact,"thumb")) ? $contact["thumb"] : $contact["photo"]);
2271 $datarray["owner-name"] = $datarray["author-name"];
2272 $datarray["owner-link"] = $datarray["author-link"];
2273 $datarray["owner-avatar"] = $datarray["author-avatar"];
2275 $datarray["guid"] = $guid;
2276 $datarray["uri"] = $datarray["parent-uri"] = self::get_uri_from_guid($author, $guid);
2278 $datarray["verb"] = ACTIVITY_POST;
2279 $datarray["gravity"] = GRAVITY_PARENT;
2281 $datarray["object"] = $xml;
2283 $datarray["body"] = $body;
2285 if ($provider_display_name != "")
2286 $datarray["app"] = $provider_display_name;
2288 $datarray["plink"] = self::plink($author, $guid);
2289 $datarray["private"] = (($public == "false") ? 1 : 0);
2290 $datarray["changed"] = $datarray["created"] = $datarray["edited"] = datetime_convert("UTC", "UTC", $created_at);
2292 if (isset($address["address"]))
2293 $datarray["location"] = $address["address"];
2295 if (isset($address["lat"]) AND isset($address["lng"]))
2296 $datarray["coord"] = $address["lat"]." ".$address["lng"];
2298 self::fetch_guid($datarray);
2299 $message_id = item_store($datarray);
2302 logger("Stored item ".$datarray["guid"]." with message id ".$message_id, LOGGER_DEBUG);
2307 /* ************************************************************************************** *
2308 * Here are all the functions that are needed to transmit data with the Diaspora protocol *
2309 * ************************************************************************************** */
2312 * @brief returnes the handle of a contact
2314 * @param array $me contact array
2316 * @return string the handle in the format user@domain.tld
2318 private function my_handle($contact) {
2319 if ($contact["addr"] != "")
2320 return $contact["addr"];
2322 // Normally we should have a filled "addr" field - but in the past this wasn't the case
2323 // So - just in case - we build the the address here.
2324 if ($contact["nickname"] != "")
2325 $nick = $contact["nickname"];
2327 $nick = $contact["nick"];
2329 return $nick."@".substr(App::get_baseurl(), strpos(App::get_baseurl(),"://") + 3);
2333 * @brief Creates the envelope for the "fetch" endpoint
2335 * @param string $msg The message that is to be transmitted
2336 * @param array $user The record of the sender
2338 * @return string The envelope
2341 public static function build_magic_envelope($msg, $user) {
2343 $b64url_data = base64url_encode($msg);
2344 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2346 $key_id = base64url_encode(diaspora::my_handle($user));
2347 $type = "application/xml";
2348 $encoding = "base64url";
2349 $alg = "RSA-SHA256";
2350 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2351 $signature = rsa_sign($signable_data, $user["prvkey"]);
2352 $sig = base64url_encode($signature);
2354 $xmldata = array("me:env" => array("me:data" => $data,
2355 "@attributes" => array("type" => $type),
2356 "me:encoding" => $encoding,
2359 "@attributes2" => array("key_id" => $key_id)));
2361 $namespaces = array("me" => "http://salmon-protocol.org/ns/magic-env");
2363 return xml::from_array($xmldata, $xml, false, $namespaces);
2367 * @brief Creates the envelope for a public message
2369 * @param string $msg The message that is to be transmitted
2370 * @param array $user The record of the sender
2371 * @param array $contact Target of the communication
2372 * @param string $prvkey The private key of the sender
2373 * @param string $pubkey The public key of the receiver
2375 * @return string The envelope
2377 private function build_public_message($msg, $user, $contact, $prvkey, $pubkey) {
2379 logger("Message: ".$msg, LOGGER_DATA);
2381 $handle = self::my_handle($user);
2383 $b64url_data = base64url_encode($msg);
2385 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2387 $type = "application/xml";
2388 $encoding = "base64url";
2389 $alg = "RSA-SHA256";
2391 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2393 $signature = rsa_sign($signable_data,$prvkey);
2394 $sig = base64url_encode($signature);
2396 $xmldata = array("diaspora" => array("header" => array("author_id" => $handle),
2397 "me:env" => array("me:encoding" => $encoding,
2400 "@attributes" => array("type" => $type),
2401 "me:sig" => $sig)));
2403 $namespaces = array("" => "https://joindiaspora.com/protocol",
2404 "me" => "http://salmon-protocol.org/ns/magic-env");
2406 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2408 logger("magic_env: ".$magic_env, LOGGER_DATA);
2413 * @brief Creates the envelope for a private message
2415 * @param string $msg The message that is to be transmitted
2416 * @param array $user The record of the sender
2417 * @param array $contact Target of the communication
2418 * @param string $prvkey The private key of the sender
2419 * @param string $pubkey The public key of the receiver
2421 * @return string The envelope
2423 private function build_private_message($msg, $user, $contact, $prvkey, $pubkey) {
2425 logger("Message: ".$msg, LOGGER_DATA);
2427 // without a public key nothing will work
2430 logger("pubkey missing: contact id: ".$contact["id"]);
2434 $inner_aes_key = random_string(32);
2435 $b_inner_aes_key = base64_encode($inner_aes_key);
2436 $inner_iv = random_string(16);
2437 $b_inner_iv = base64_encode($inner_iv);
2439 $outer_aes_key = random_string(32);
2440 $b_outer_aes_key = base64_encode($outer_aes_key);
2441 $outer_iv = random_string(16);
2442 $b_outer_iv = base64_encode($outer_iv);
2444 $handle = self::my_handle($user);
2446 $padded_data = pkcs5_pad($msg,16);
2447 $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
2449 $b64_data = base64_encode($inner_encrypted);
2452 $b64url_data = base64url_encode($b64_data);
2453 $data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
2455 $type = "application/xml";
2456 $encoding = "base64url";
2457 $alg = "RSA-SHA256";
2459 $signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
2461 $signature = rsa_sign($signable_data,$prvkey);
2462 $sig = base64url_encode($signature);
2464 $xmldata = array("decrypted_header" => array("iv" => $b_inner_iv,
2465 "aes_key" => $b_inner_aes_key,
2466 "author_id" => $handle));
2468 $decrypted_header = xml::from_array($xmldata, $xml, true);
2469 $decrypted_header = pkcs5_pad($decrypted_header,16);
2471 $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
2473 $outer_json = json_encode(array("iv" => $b_outer_iv, "key" => $b_outer_aes_key));
2475 $encrypted_outer_key_bundle = "";
2476 openssl_public_encrypt($outer_json, $encrypted_outer_key_bundle, $pubkey);
2478 $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
2480 logger("outer_bundle: ".$b64_encrypted_outer_key_bundle." key: ".$pubkey, LOGGER_DATA);
2482 $encrypted_header_json_object = json_encode(array("aes_key" => base64_encode($encrypted_outer_key_bundle),
2483 "ciphertext" => base64_encode($ciphertext)));
2484 $cipher_json = base64_encode($encrypted_header_json_object);
2486 $xmldata = array("diaspora" => array("encrypted_header" => $cipher_json,
2487 "me:env" => array("me:encoding" => $encoding,
2490 "@attributes" => array("type" => $type),
2491 "me:sig" => $sig)));
2493 $namespaces = array("" => "https://joindiaspora.com/protocol",
2494 "me" => "http://salmon-protocol.org/ns/magic-env");
2496 $magic_env = xml::from_array($xmldata, $xml, false, $namespaces);
2498 logger("magic_env: ".$magic_env, LOGGER_DATA);
2503 * @brief Create the envelope for a message
2505 * @param string $msg The message that is to be transmitted
2506 * @param array $user The record of the sender
2507 * @param array $contact Target of the communication
2508 * @param string $prvkey The private key of the sender
2509 * @param string $pubkey The public key of the receiver
2510 * @param bool $public Is the message public?
2512 * @return string The message that will be transmitted to other servers
2514 private function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
2517 $magic_env = self::build_public_message($msg,$user,$contact,$prvkey,$pubkey);
2519 $magic_env = self::build_private_message($msg,$user,$contact,$prvkey,$pubkey);
2521 // The data that will be transmitted is double encoded via "urlencode", strange ...
2522 $slap = "xml=".urlencode(urlencode($magic_env));
2527 * @brief Creates a signature for a message
2529 * @param array $owner the array of the owner of the message
2530 * @param array $message The message that is to be signed
2532 * @return string The signature
2534 private function signature($owner, $message) {
2536 unset($sigmsg["author_signature"]);
2537 unset($sigmsg["parent_author_signature"]);
2539 $signed_text = implode(";", $sigmsg);
2541 return base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
2545 * @brief Transmit a message to a target server
2547 * @param array $owner the array of the item owner
2548 * @param array $contact Target of the communication
2549 * @param string $slap The message that is to be transmitted
2550 * @param bool $public_batch Is it a public post?
2551 * @param bool $queue_run Is the transmission called from the queue?
2552 * @param string $guid message guid
2554 * @return int Result of the transmission
2556 public static function transmit($owner, $contact, $slap, $public_batch, $queue_run=false, $guid = "") {
2560 $enabled = intval(get_config("system", "diaspora_enabled"));
2564 $logid = random_string(4);
2565 $dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
2567 logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
2571 logger("transmit: ".$logid."-".$guid." ".$dest_url);
2573 if (!$queue_run && was_recently_delayed($contact["id"])) {
2576 if (!intval(get_config("system", "diaspora_test"))) {
2577 post_url($dest_url."/", $slap);
2578 $return_code = $a->get_curl_code();
2580 logger("test_mode");
2585 logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
2587 if(!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
2588 logger("queue message");
2590 $r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
2591 intval($contact["id"]),
2592 dbesc(NETWORK_DIASPORA),
2594 intval($public_batch)
2597 logger("add_to_queue ignored - identical item already in queue");
2599 // queue message for redelivery
2600 add_to_queue($contact["id"], NETWORK_DIASPORA, $slap, $public_batch);
2604 return(($return_code) ? $return_code : (-1));
2609 * @brief Build the post xml
2611 * @param string $type The message type
2612 * @param array $message The message data
2614 * @return string The post XML
2616 public static function build_post_xml($type, $message) {
2618 $data = array("XML" => array("post" => array($type => $message)));
2619 return xml::from_array($data, $xml);
2623 * @brief Builds and transmit messages
2625 * @param array $owner the array of the item owner
2626 * @param array $contact Target of the communication
2627 * @param string $type The message type
2628 * @param array $message The message data
2629 * @param bool $public_batch Is it a public post?
2630 * @param string $guid message guid
2631 * @param bool $spool Should the transmission be spooled or transmitted?
2633 * @return int Result of the transmission
2635 private function build_and_transmit($owner, $contact, $type, $message, $public_batch = false, $guid = "", $spool = false) {
2637 $msg = self::build_post_xml($type, $message);
2639 logger('message: '.$msg, LOGGER_DATA);
2640 logger('send guid '.$guid, LOGGER_DEBUG);
2642 $slap = self::build_message($msg, $owner, $contact, $owner['uprvkey'], $contact['pubkey'], $public_batch);
2645 add_to_queue($contact['id'], NETWORK_DIASPORA, $slap, $public_batch);
2648 $return_code = self::transmit($owner, $contact, $slap, $public_batch, false, $guid);
2650 logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
2652 return $return_code;
2656 * @brief Sends a "share" message
2658 * @param array $owner the array of the item owner
2659 * @param array $contact Target of the communication
2661 * @return int The result of the transmission
2663 public static function send_share($owner,$contact) {
2665 $message = array("sender_handle" => self::my_handle($owner),
2666 "recipient_handle" => $contact["addr"]);
2668 return self::build_and_transmit($owner, $contact, "request", $message);
2672 * @brief sends an "unshare"
2674 * @param array $owner the array of the item owner
2675 * @param array $contact Target of the communication
2677 * @return int The result of the transmission
2679 public static function send_unshare($owner,$contact) {
2681 $message = array("post_guid" => $owner["guid"],
2682 "diaspora_handle" => self::my_handle($owner),
2683 "type" => "Person");
2685 return self::build_and_transmit($owner, $contact, "retraction", $message);
2689 * @brief Checks a message body if it is a reshare
2691 * @param string $body The message body that is to be check
2692 * @param bool $complete Should it be a complete check or a simple check?
2694 * @return array|bool Reshare details or "false" if no reshare
2696 public static function is_reshare($body, $complete = true) {
2697 $body = trim($body);
2699 // Skip if it isn't a pure repeated messages
2700 // Does it start with a share?
2701 if ((strpos($body, "[share") > 0) AND $complete)
2704 // Does it end with a share?
2705 if (strlen($body) > (strrpos($body, "[/share]") + 8))
2708 $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
2709 // Skip if there is no shared message in there
2710 if ($body == $attributes)
2713 // If we don't do the complete check we quit here
2718 preg_match("/guid='(.*?)'/ism", $attributes, $matches);
2719 if ($matches[1] != "")
2720 $guid = $matches[1];
2722 preg_match('/guid="(.*?)"/ism', $attributes, $matches);
2723 if ($matches[1] != "")
2724 $guid = $matches[1];
2727 $r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
2728 dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
2731 $ret["root_handle"] = self::handle_from_contact($r[0]["contact-id"]);
2732 $ret["root_guid"] = $guid;
2738 preg_match("/profile='(.*?)'/ism", $attributes, $matches);
2739 if ($matches[1] != "")
2740 $profile = $matches[1];
2742 preg_match('/profile="(.*?)"/ism', $attributes, $matches);
2743 if ($matches[1] != "")
2744 $profile = $matches[1];
2748 $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
2749 if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
2753 preg_match("/link='(.*?)'/ism", $attributes, $matches);
2754 if ($matches[1] != "")
2755 $link = $matches[1];
2757 preg_match('/link="(.*?)"/ism', $attributes, $matches);
2758 if ($matches[1] != "")
2759 $link = $matches[1];
2761 $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
2762 if (($ret["root_guid"] == $link) OR (trim($ret["root_guid"]) == ""))
2769 * @brief Create a post (status message or reshare)
2771 * @param array $item The item that will be exported
2772 * @param array $owner the array of the item owner
2775 * 'type' -> Message type ("status_message" or "reshare")
2776 * 'message' -> Array of XML elements of the status
2778 public static function build_status($item, $owner) {
2780 $myaddr = self::my_handle($owner);
2782 $public = (($item["private"]) ? "false" : "true");
2784 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
2786 // Detect a share element and do a reshare
2787 if (!$item['private'] AND ($ret = self::is_reshare($item["body"]))) {
2788 $message = array("root_diaspora_id" => $ret["root_handle"],
2789 "root_guid" => $ret["root_guid"],
2790 "guid" => $item["guid"],
2791 "diaspora_handle" => $myaddr,
2792 "public" => $public,
2793 "created_at" => $created,
2794 "provider_display_name" => $item["app"]);
2798 $title = $item["title"];
2799 $body = $item["body"];
2801 // convert to markdown
2802 $body = html_entity_decode(bb2diaspora($body));
2806 $body = "## ".html_entity_decode($title)."\n\n".$body;
2808 if ($item["attach"]) {
2809 $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
2811 $body .= "\n".t("Attachments:")."\n";
2812 foreach($matches as $mtch)
2813 $body .= "[".$mtch[3]."](".$mtch[1].")\n";
2817 $location = array();
2819 if ($item["location"] != "")
2820 $location["address"] = $item["location"];
2822 if ($item["coord"] != "") {
2823 $coord = explode(" ", $item["coord"]);
2824 $location["lat"] = $coord[0];
2825 $location["lng"] = $coord[1];
2828 $message = array("raw_message" => $body,
2829 "location" => $location,
2830 "guid" => $item["guid"],
2831 "diaspora_handle" => $myaddr,
2832 "public" => $public,
2833 "created_at" => $created,
2834 "provider_display_name" => $item["app"]);
2836 if (count($location) == 0)
2837 unset($message["location"]);
2839 $type = "status_message";
2841 return array("type" => $type, "message" => $message);
2845 * @brief Sends a post
2847 * @param array $item The item that will be exported
2848 * @param array $owner the array of the item owner
2849 * @param array $contact Target of the communication
2850 * @param bool $public_batch Is it a public post?
2852 * @return int The result of the transmission
2854 public static function send_status($item, $owner, $contact, $public_batch = false) {
2856 $status = diaspora::build_status($item, $owner);
2858 return self::build_and_transmit($owner, $contact, $status["type"], $status["message"], $public_batch, $item["guid"]);
2862 * @brief Creates a "like" object
2864 * @param array $item The item that will be exported
2865 * @param array $owner the array of the item owner
2867 * @return array The data for a "like"
2869 private function construct_like($item, $owner) {
2871 $p = q("SELECT `guid`, `uri`, `parent-uri` FROM `item` WHERE `uri` = '%s' LIMIT 1",
2872 dbesc($item["thr-parent"]));
2878 $target_type = ($parent["uri"] === $parent["parent-uri"] ? "Post" : "Comment");
2881 return(array("positive" => $positive,
2882 "guid" => $item["guid"],
2883 "target_type" => $target_type,
2884 "parent_guid" => $parent["guid"],
2885 "author_signature" => "",
2886 "diaspora_handle" => self::my_handle($owner)));
2890 * @brief Creates the object for a comment
2892 * @param array $item The item that will be exported
2893 * @param array $owner the array of the item owner
2895 * @return array The data for a comment
2897 private function construct_comment($item, $owner) {
2899 $p = q("SELECT `guid` FROM `item` WHERE `parent` = %d AND `id` = %d LIMIT 1",
2900 intval($item["parent"]),
2901 intval($item["parent"])
2909 $text = html_entity_decode(bb2diaspora($item["body"]));
2911 return(array("guid" => $item["guid"],
2912 "parent_guid" => $parent["guid"],
2913 "author_signature" => "",
2915 "diaspora_handle" => self::my_handle($owner)));
2919 * @brief Send a like or a comment
2921 * @param array $item The item that will be exported
2922 * @param array $owner the array of the item owner
2923 * @param array $contact Target of the communication
2924 * @param bool $public_batch Is it a public post?
2926 * @return int The result of the transmission
2928 public static function send_followup($item,$owner,$contact,$public_batch = false) {
2930 if($item['verb'] === ACTIVITY_LIKE) {
2931 $message = self::construct_like($item, $owner);
2934 $message = self::construct_comment($item, $owner);
2941 $message["author_signature"] = self::signature($owner, $message);
2943 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
2947 * @brief Creates a message from a signature record entry
2949 * @param array $item The item that will be exported
2950 * @param array $signature The entry of the "sign" record
2952 * @return string The message
2954 private function message_from_signature($item, $signature) {
2956 // Split the signed text
2957 $signed_parts = explode(";", $signature['signed_text']);
2959 if ($item["deleted"])
2960 $message = array("parent_author_signature" => "",
2961 "target_guid" => $signed_parts[0],
2962 "target_type" => $signed_parts[1],
2963 "sender_handle" => $signature['signer'],
2964 "target_author_signature" => $signature['signature']);
2965 elseif ($item['verb'] === ACTIVITY_LIKE)
2966 $message = array("positive" => $signed_parts[0],
2967 "guid" => $signed_parts[1],
2968 "target_type" => $signed_parts[2],
2969 "parent_guid" => $signed_parts[3],
2970 "parent_author_signature" => "",
2971 "author_signature" => $signature['signature'],
2972 "diaspora_handle" => $signed_parts[4]);
2974 // Remove the comment guid
2975 $guid = array_shift($signed_parts);
2977 // Remove the parent guid
2978 $parent_guid = array_shift($signed_parts);
2980 // Remove the handle
2981 $handle = array_pop($signed_parts);
2983 // Glue the parts together
2984 $text = implode(";", $signed_parts);
2986 $message = array("guid" => $guid,
2987 "parent_guid" => $parent_guid,
2988 "parent_author_signature" => "",
2989 "author_signature" => $signature['signature'],
2990 "text" => implode(";", $signed_parts),
2991 "diaspora_handle" => $handle);
2997 * @brief Relays messages (like, comment, retraction) to other servers if we are the thread owner
2999 * @param array $item The item that will be exported
3000 * @param array $owner the array of the item owner
3001 * @param array $contact Target of the communication
3002 * @param bool $public_batch Is it a public post?
3004 * @return int The result of the transmission
3006 public static function send_relay($item, $owner, $contact, $public_batch = false) {
3008 if ($item["deleted"])
3009 return self::send_retraction($item, $owner, $contact, $public_batch, true);
3010 elseif ($item['verb'] === ACTIVITY_LIKE)
3015 logger("Got relayable data ".$type." for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3017 // fetch the original signature
3019 $r = q("SELECT `signed_text`, `signature`, `signer` FROM `sign` WHERE `iid` = %d LIMIT 1",
3020 intval($item["id"]));
3023 logger("Couldn't fetch signatur for item ".$item["guid"]." (".$item["id"].")", LOGGER_DEBUG);
3029 // Old way - is used by the internal Friendica functions
3030 /// @todo Change all signatur storing functions to the new format
3031 if ($signature['signed_text'] AND $signature['signature'] AND $signature['signer'])
3032 $message = self::message_from_signature($item, $signature);
3034 $msg = json_decode($signature['signed_text'], true);
3037 if (is_array($msg)) {
3038 foreach ($msg AS $field => $data) {
3039 if (!$item["deleted"]) {
3040 if ($field == "author")
3041 $field = "diaspora_handle";
3042 if ($field == "parent_type")
3043 $field = "target_type";
3046 $message[$field] = $data;
3049 logger("Signature text for item ".$item["guid"]." (".$item["id"].") couldn't be extracted: ".$signature['signed_text'], LOGGER_DEBUG);
3052 $message["parent_author_signature"] = self::signature($owner, $message);
3054 logger("Relayed data ".print_r($message, true), LOGGER_DEBUG);
3056 return self::build_and_transmit($owner, $contact, $type, $message, $public_batch, $item["guid"]);
3060 * @brief Sends a retraction (deletion) of a message, like or comment
3062 * @param array $item The item that will be exported
3063 * @param array $owner the array of the item owner
3064 * @param array $contact Target of the communication
3065 * @param bool $public_batch Is it a public post?
3066 * @param bool $relay Is the retraction transmitted from a relay?
3068 * @return int The result of the transmission
3070 public static function send_retraction($item, $owner, $contact, $public_batch = false, $relay = false) {
3072 $itemaddr = self::handle_from_contact($item["contact-id"], $item["gcontact-id"]);
3074 // Check whether the retraction is for a top-level post or whether it's a relayable
3075 if ($item["uri"] !== $item["parent-uri"]) {
3076 $msg_type = "relayable_retraction";
3077 $target_type = (($item["verb"] === ACTIVITY_LIKE) ? "Like" : "Comment");
3079 $msg_type = "signed_retraction";
3080 $target_type = "StatusMessage";
3083 if ($relay AND ($item["uri"] !== $item["parent-uri"]))
3084 $signature = "parent_author_signature";
3086 $signature = "target_author_signature";
3088 $signed_text = $item["guid"].";".$target_type;
3090 $message = array("target_guid" => $item['guid'],
3091 "target_type" => $target_type,
3092 "sender_handle" => $itemaddr,
3093 $signature => base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')));
3095 logger("Got message ".print_r($message, true), LOGGER_DEBUG);
3097 return self::build_and_transmit($owner, $contact, $msg_type, $message, $public_batch, $item["guid"]);
3101 * @brief Sends a mail
3103 * @param array $item The item that will be exported
3104 * @param array $owner The owner
3105 * @param array $contact Target of the communication
3107 * @return int The result of the transmission
3109 public static function send_mail($item, $owner, $contact) {
3111 $myaddr = self::my_handle($owner);
3113 $r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
3114 intval($item["convid"]),
3115 intval($item["uid"])
3119 logger("conversation not found.");
3125 "guid" => $cnv["guid"],
3126 "subject" => $cnv["subject"],
3127 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
3128 "diaspora_handle" => $cnv["creator"],
3129 "participant_handles" => $cnv["recips"]
3132 $body = bb2diaspora($item["body"]);
3133 $created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
3135 $signed_text = $item["guid"].";".$cnv["guid"].";".$body.";".$created.";".$myaddr.";".$cnv['guid'];
3136 $sig = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
3139 "guid" => $item["guid"],
3140 "parent_guid" => $cnv["guid"],
3141 "parent_author_signature" => $sig,
3142 "author_signature" => $sig,
3144 "created_at" => $created,
3145 "diaspora_handle" => $myaddr,
3146 "conversation_guid" => $cnv["guid"]
3149 if ($item["reply"]) {
3153 $message = array("guid" => $cnv["guid"],
3154 "subject" => $cnv["subject"],
3155 "created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
3157 "diaspora_handle" => $cnv["creator"],
3158 "participant_handles" => $cnv["recips"]);
3160 $type = "conversation";
3163 return self::build_and_transmit($owner, $contact, $type, $message, false, $item["guid"]);
3167 * @brief Sends profile data
3169 * @param int $uid The user id
3171 public static function send_profile($uid) {
3176 $recips = q("SELECT `id`,`name`,`network`,`pubkey`,`notify` FROM `contact` WHERE `network` = '%s'
3177 AND `uid` = %d AND `rel` != %d",
3178 dbesc(NETWORK_DIASPORA),
3180 intval(CONTACT_IS_SHARING)
3185 $r = q("SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
3187 INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
3188 INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
3189 WHERE `user`.`uid` = %d AND `profile`.`is-default` AND `contact`.`self` LIMIT 1",
3198 $handle = $profile["addr"];
3199 $first = ((strpos($profile['name'],' ')
3200 ? trim(substr($profile['name'],0,strpos($profile['name'],' '))) : $profile['name']));
3201 $last = (($first === $profile['name']) ? '' : trim(substr($profile['name'], strlen($first))));
3202 $large = App::get_baseurl().'/photo/custom/300/'.$profile['uid'].'.jpg';
3203 $medium = App::get_baseurl().'/photo/custom/100/'.$profile['uid'].'.jpg';
3204 $small = App::get_baseurl().'/photo/custom/50/' .$profile['uid'].'.jpg';
3205 $searchable = (($profile['publish'] && $profile['net-publish']) ? 'true' : 'false');
3207 if ($searchable === 'true') {
3208 $dob = '1000-00-00';
3210 if (($profile['dob']) && ($profile['dob'] != '0000-00-00'))
3211 $dob = ((intval($profile['dob'])) ? intval($profile['dob']) : '1000') .'-'. datetime_convert('UTC','UTC',$profile['dob'],'m-d');
3213 $about = $profile['about'];
3214 $about = strip_tags(bbcode($about));
3216 $location = formatted_location($profile);
3218 if ($profile['pub_keywords']) {
3219 $kw = str_replace(',',' ',$profile['pub_keywords']);
3220 $kw = str_replace(' ',' ',$kw);
3221 $arr = explode(' ',$profile['pub_keywords']);
3223 for($x = 0; $x < 5; $x ++) {
3225 $tags .= '#'. trim($arr[$x]) .' ';
3229 $tags = trim($tags);
3232 $message = array("diaspora_handle" => $handle,
3233 "first_name" => $first,
3234 "last_name" => $last,
3235 "image_url" => $large,
3236 "image_url_medium" => $medium,
3237 "image_url_small" => $small,
3239 "gender" => $profile['gender'],
3241 "location" => $location,
3242 "searchable" => $searchable,
3243 "tag_string" => $tags);
3245 foreach($recips as $recip)
3246 self::build_and_transmit($profile, $recip, "profile", $message, false, "", true);
3250 * @brief Stores the signature for likes that are created on our system
3252 * @param array $contact The contact array of the "like"
3253 * @param int $post_id The post id of the "like"
3255 * @return bool Success
3257 public static function store_like_signature($contact, $post_id) {
3259 // Is the contact the owner? Then fetch the private key
3260 if (!$contact['self'] OR ($contact['uid'] == 0)) {
3261 logger("No owner post, so not storing signature", LOGGER_DEBUG);
3265 $r = q("SELECT `prvkey` FROM `user` WHERE `uid` = %d LIMIT 1", intval($contact['uid']));
3269 $contact["uprvkey"] = $r[0]['prvkey'];
3271 $r = q("SELECT * FROM `item` WHERE `id` = %d LIMIT 1", intval($post_id));
3275 if (!in_array($r[0]["verb"], array(ACTIVITY_LIKE, ACTIVITY_DISLIKE)))
3278 $message = self::construct_like($r[0], $contact);
3279 $message["author_signature"] = self::signature($contact, $message);
3281 // In the future we will store the signature more flexible to support new fields.
3282 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3283 // (We are transmitting this data here via DFRN)
3285 $signed_text = $message["positive"].";".$message["guid"].";".$message["target_type"].";".
3286 $message["parent_guid"].";".$message["diaspora_handle"];
3288 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3290 dbesc($signed_text),
3291 dbesc($message["author_signature"]),
3292 dbesc($message["diaspora_handle"])
3295 // This here will replace the lines above, once Diaspora changed its protocol
3296 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3297 // intval($message_id),
3298 // dbesc(json_encode($message))
3301 logger('Stored diaspora like signature');
3306 * @brief Stores the signature for comments that are created on our system
3308 * @param array $item The item array of the comment
3309 * @param array $contact The contact array of the item owner
3310 * @param string $uprvkey The private key of the sender
3311 * @param int $message_id The message id of the comment
3313 * @return bool Success
3315 public static function store_comment_signature($item, $contact, $uprvkey, $message_id) {
3317 if ($uprvkey == "") {
3318 logger('No private key, so not storing comment signature', LOGGER_DEBUG);
3322 $contact["uprvkey"] = $uprvkey;
3324 $message = self::construct_comment($item, $contact);
3325 $message["author_signature"] = self::signature($contact, $message);
3327 // In the future we will store the signature more flexible to support new fields.
3328 // Right now we cannot change this since old Friendica versions (prior to 3.5) can only handle this format.
3329 // (We are transmitting this data here via DFRN)
3330 $signed_text = $message["guid"].";".$message["parent_guid"].";".
3331 $message["text"].";".$message["diaspora_handle"];
3333 q("INSERT INTO `sign` (`iid`,`signed_text`,`signature`,`signer`) VALUES (%d,'%s','%s','%s')",
3334 intval($message_id),
3335 dbesc($signed_text),
3336 dbesc($message["author_signature"]),
3337 dbesc($message["diaspora_handle"])
3340 // This here will replace the lines above, once Diaspora changed its protocol
3341 //q("INSERT INTO `sign` (`iid`,`signed_text`) VALUES (%d,'%s')",
3342 // intval($message_id),
3343 // dbesc(json_encode($message))
3346 logger('Stored diaspora comment signature');