3 require_once('include/crypto.php');
4 require_once('include/items.php');
5 require_once('include/bb2diaspora.php');
6 require_once('include/contact_selectors.php');
8 function diaspora_dispatch($importer,$msg) {
10 $parsed_xml = parse_xml_string($msg['message'],false);
12 $xmlbase = $parsed_xml->post;
14 if($xmlbase->request) {
15 diaspora_request($importer,$xmlbase->request);
17 elseif($xmlbase->status_message) {
18 diaspora_post($importer,$xmlbase->status_message);
20 elseif($xmlbase->comment) {
21 diaspora_comment($importer,$xmlbase->comment,$msg);
23 elseif($xmlbase->like) {
24 diaspora_like($importer,$xmlbase->like,$msg);
26 elseif($xmlbase->retraction) {
27 diaspora_retraction($importer,$xmlbase->retraction,$msg);
29 elseif($xmlbase->photo) {
30 diaspora_photo($importer,$xmlbase->photo,$msg);
33 logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true));
38 function diaspora_get_contact_by_handle($uid,$handle) {
39 $r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND `uid` = %d AND `addr` = '%s' LIMIT 1",
40 dbesc(NETWORK_DIASPORA),
49 function find_diaspora_person_by_handle($handle) {
50 $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
51 dbesc(NETWORK_DIASPORA),
55 // update record occasionally so it doesn't get stale
56 $d = strtotime($r[0]['updated'] . ' +00:00');
57 if($d < strtotime('now - 14 days')) {
58 q("delete from fcontact where id = %d limit 1",
65 require_once('include/Scrape.php');
66 $r = probe_url($handle, PROBE_DIASPORA);
67 if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
75 function get_diaspora_key($uri) {
76 logger('Fetching diaspora key for: ' . $uri);
78 $r = find_diaspora_person_by_handle($uri);
85 function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey) {
88 logger('diaspora_msg_build: ' . $msg, LOGGER_DATA);
90 $inner_aes_key = random_string(32);
91 $b_inner_aes_key = base64_encode($inner_aes_key);
92 $inner_iv = random_string(16);
93 $b_inner_iv = base64_encode($inner_iv);
95 $outer_aes_key = random_string(32);
96 $b_outer_aes_key = base64_encode($outer_aes_key);
97 $outer_iv = random_string(16);
98 $b_outer_iv = base64_encode($outer_iv);
100 $handle = 'acct:' . $user['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
102 $padded_data = pkcs5_pad($msg,16);
103 $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
105 $b64_data = base64_encode($inner_encrypted);
108 $b64url_data = base64url_encode($b64_data);
109 $b64url_stripped = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data);
110 $lines = str_split($b64url_stripped,60);
111 $data = implode("\n",$lines);
112 $data = $data . (($data[-1] != "\n") ? "\n" : '') ;
113 $type = 'application/atom+xml';
114 $encoding = 'base64url';
117 $signable_data = $data . '.' . base64url_encode($type) . "\n" . '.'
118 . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
120 $signature = rsa_sign($signable_data,$prvkey);
121 $sig = base64url_encode($signature);
123 $decrypted_header = <<< EOT
126 <aes_key>$b_inner_aes_key</aes_key>
128 <name>{$user['username']}</name>
134 $decrypted_header = pkcs5_pad($decrypted_header,16);
136 $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
138 $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key));
140 $encrypted_outer_key_bundle = '';
141 openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey);
143 $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
145 logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA);
147 $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle),
148 'ciphertext' => base64_encode($ciphertext)));
149 $cipher_json = base64_encode($encrypted_header_json_object);
151 $encrypted_header = '<encrypted_header>' . $cipher_json . '</encrypted_header>';
154 <?xml version='1.0' encoding='UTF-8'?>
155 <entry xmlns='http://www.w3.org/2005/Atom'>
157 <me:env xmlns:me="http://salmon-protocol.org/ns/magic-env">
158 <me:encoding>base64url</me:encoding>
159 <me:alg>RSA-SHA256</me:alg>
160 <me:data type="application/atom+xml">$data</me:data>
161 <me:sig>$sig</me:sig>
166 logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA);
173 * diaspora_decode($importer,$xml)
174 * array $importer -> from user table
175 * string $xml -> urldecoded Diaspora salmon
178 * 'message' -> decoded Diaspora XML message
179 * 'author' -> author diaspora handle
180 * 'key' -> author public key (converted to pkcs#8)
182 * Author and key are used elsewhere to save a lookup for verifying replies and likes
186 function diaspora_decode($importer,$xml) {
188 $basedom = parse_xml_string($xml);
190 $atom = $basedom->children(NAMESPACE_ATOM1);
192 // Diaspora devs: This is kind of sucky - 'encrypted_header' does not belong in the atom namespace
194 $encrypted_header = json_decode(base64_decode($atom->encrypted_header));
196 $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key);
197 $ciphertext = base64_decode($encrypted_header->ciphertext);
199 $outer_key_bundle = '';
200 openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']);
202 $j_outer_key_bundle = json_decode($outer_key_bundle);
204 $outer_iv = base64_decode($j_outer_key_bundle->iv);
205 $outer_key = base64_decode($j_outer_key_bundle->key);
207 $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv);
210 $decrypted = pkcs5_unpad($decrypted);
213 * $decrypted now contains something like
216 * <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv>
217 * <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key>
219 * <name>Ryan Hughes</name>
220 * <uri>acct:galaxor@diaspora.pirateship.org</uri>
222 * </decrypted_header>
225 logger('decrypted: ' . $decrypted, LOGGER_DEBUG);
226 $idom = parse_xml_string($decrypted,false);
228 $inner_iv = base64_decode($idom->iv);
229 $inner_aes_key = base64_decode($idom->aes_key);
231 $author_link = str_replace('acct:','',$idom->author->uri);
233 $dom = $basedom->children(NAMESPACE_SALMON_ME);
235 // figure out where in the DOM tree our data is hiding
237 if($dom->provenance->data)
238 $base = $dom->provenance;
239 elseif($dom->env->data)
245 logger('mod-diaspora: unable to locate salmon data in xml ');
246 http_status_exit(400);
250 // Stash the signature away for now. We have to find their key or it won't be good for anything.
251 $signature = base64url_decode($base->sig);
255 // strip whitespace so our data element will return to one big base64 blob
256 $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
258 // Add back the 60 char linefeeds
260 // This completely violates the entire principle of salmon magic signatures,
261 // which was to have a message signing format that was completely ambivalent to linefeeds
262 // and transport whitespace mangling, and base64 wrapping rules. Guess what? PHP and Ruby
263 // use different linelengths for base64 output.
265 $lines = str_split($data,60);
266 $data = implode("\n",$lines);
269 // stash away some other stuff for later
271 $type = $base->data[0]->attributes()->type[0];
272 $keyhash = $base->sig[0]->attributes()->keyhash[0];
273 $encoding = $base->encoding;
276 // I can't even begin to tell you how sucky this is. Please read the spec.
278 $signed_data = $data . (($data[-1] != "\n") ? "\n" : '') . '.' . base64url_encode($type) . "\n" . '.' . base64url_encode($encoding) . "\n" . '.' . base64url_encode($alg) . "\n";
282 $data = base64url_decode($data);
284 // Now pull out the inner encrypted blob
286 $inner_encrypted = base64_decode($data);
289 $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv);
291 $inner_decrypted = pkcs5_unpad($inner_decrypted);
294 logger('mod-diaspora: Could not retrieve author URI.');
295 http_status_exit(400);
298 // Once we have the author URI, go to the web and try to find their public key
299 // (first this will look it up locally if it is in the fcontact cache)
300 // This will also convert diaspora public key from pkcs#1 to pkcs#8
302 logger('mod-diaspora: Fetching key for ' . $author_link );
303 $key = get_diaspora_key($author_link);
306 logger('mod-diaspora: Could not retrieve author key.');
307 http_status_exit(400);
310 $verify = rsa_verify($signed_data,$signature,$key);
313 logger('mod-diaspora: Message did not verify. Discarding.');
314 http_status_exit(400);
317 logger('mod-diaspora: Message verified.');
319 return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key);
325 function diaspora_request($importer,$xml) {
327 $sender_handle = unxmlify($xml->sender_handle);
328 $recipient_handle = unxmlify($xml->recipient_handle);
330 if(! $sender_handle || ! $recipient_handle)
333 $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
338 // perhaps we were already sharing with this person. Now they're sharing with us.
339 // That makes us friends.
341 if($contact['rel'] == CONTACT_IS_FOLLOWER) {
342 q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
343 intval(CONTACT_IS_FRIEND),
344 intval($contact['id']),
345 intval($importer['uid'])
348 // send notification?
352 $ret = find_diaspora_person_by_handle($sender_handle);
355 if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) {
356 logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle);
360 $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`)
361 VALUES ( %d, '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ",
362 intval($importer['uid']),
363 dbesc($ret['network']),
369 dbesc($ret['photo']),
370 dbesc($ret['pubkey']),
371 dbesc($ret['notify']),
377 // find the contact record we just created
379 $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle);
381 $hash = random_string() . (string) time(); // Generate a confirm_key
383 if($contact_record) {
384 $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` )
385 VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )",
386 intval($importer['uid']),
387 intval($contact_record['id']),
390 dbesc( t('Sharing notification from Diaspora network')),
392 dbesc(datetime_convert())
399 function diaspora_post($importer,$xml) {
401 $guid = notags(unxmlify($xml->guid));
402 $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
404 $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
408 if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
409 logger('diaspora_post: Ignoring this author.');
410 http_status_exit(202);
414 $message_id = $diaspora_handle . ':' . $guid;
415 $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1",
416 intval($importer['uid']),
423 // allocate a guid on our system - we aren't fixing any collisions.
424 // we're ignoring them
426 $g = q("select * from guid where guid = '%s' limit 1",
430 q("insert into guid ( guid ) values ( '%s' )",
435 $created = unxmlify($xml->created_at);
436 $private = ((unxmlify($xml->public) == 'false') ? 1 : 0);
438 $body = diaspora2bb($xml->raw_message);
441 $datarray['uid'] = $importer['uid'];
442 $datarray['contact-id'] = $contact['id'];
443 $datarray['wall'] = 0;
444 $datarray['guid'] = $guid;
445 $datarray['uri'] = $datarray['parent-uri'] = $message_id;
446 $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created);
447 $datarray['private'] = $private;
448 $datarray['parent'] = 0;
449 $datarray['owner-name'] = $contact['name'];
450 $datarray['owner-link'] = $contact['url'];
451 $datarray['owner-avatar'] = $contact['thumb'];
452 $datarray['author-name'] = $contact['name'];
453 $datarray['author-link'] = $contact['url'];
454 $datarray['author-avatar'] = $contact['thumb'];
455 $datarray['body'] = $body;
456 $datarray['app'] = 'Diaspora';
458 item_store($datarray);
464 function diaspora_comment($importer,$xml,$msg) {
466 $guid = notags(unxmlify($xml->guid));
467 $parent_guid = notags(unxmlify($xml->parent_guid));
468 $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
469 $target_type = notags(unxmlify($xml->target_type));
470 $text = unxmlify($xml->text);
471 $author_signature = notags(unxmlify($xml->author_signature));
473 $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
477 $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
481 if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
482 logger('diaspora_comment: Ignoring this author.');
483 http_status_exit(202);
487 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
488 intval($importer['uid']),
492 logger('daspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid);
496 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
497 intval($importer['uid']),
501 logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
504 $parent_item = $r[0];
506 $author_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
508 $author_signature = base64_decode($author_signature);
510 if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
515 $person = find_diaspora_person_by_handle($diaspora_handle);
517 if(is_array($person) && x($person,'pubkey'))
518 $key = $person['pubkey'];
520 logger('diaspora_comment: unable to find author details');
525 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
526 logger('diaspora_comment: verification failed.');
531 if($parent_author_signature) {
532 $owner_signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle;
534 $parent_author_signature = base64_decode($parent_author_signature);
538 if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
539 logger('diaspora_comment: owner verification failed.');
544 // Phew! Everything checks out. Now create an item.
546 $body = diaspora2bb($text);
548 $message_id = $diaspora_handle . ':' . $guid;
551 $datarray['uid'] = $importer['uid'];
552 $datarray['contact-id'] = $contact['id'];
553 $datarray['wall'] = $parent_item['wall'];
554 $datarray['gravity'] = GRAVITY_COMMENT;
555 $datarray['guid'] = $guid;
556 $datarray['uri'] = $message_id;
557 $datarray['parent-uri'] = $parent_item['uri'];
559 // No timestamps for comments? OK, we'll the use current time.
560 $datarray['created'] = $datarray['edited'] = datetime_convert();
561 $datarray['private'] = $parent_item['private'];
563 $datarray['owner-name'] = $contact['name'];
564 $datarray['owner-link'] = $contact['url'];
565 $datarray['owner-avatar'] = $contact['thumb'];
567 $datarray['author-name'] = $person['name'];
568 $datarray['author-link'] = $person['url'];
569 $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
570 $datarray['body'] = $body;
571 $datarray['app'] = 'Diaspora';
573 $message_id = item_store($datarray);
575 if(! $parent_author_signature) {
576 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
578 dbesc($author_signed_data),
579 dbesc(base64_encode($author_signature)),
580 dbesc($diaspora_handle)
583 // if the message isn't already being relayed, notify others
584 // the existence of parent_author_signature means the parent_author or owner
585 // is already relaying.
587 proc_run('php','include/notifier.php','comment',$message_id);
592 function diaspora_photo($importer,$xml,$msg) {
594 $remote_photo_path = notags(unxmlify($xml->remote_photo_path));
596 $remote_photo_name = notags(unxmlify($xml->remote_photo_name));
598 $status_message_guid = notags(unxmlify($xml->status_message_guid));
600 $guid = notags(unxmlify($xml->guid));
602 $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
604 $public = notags(unxmlify($xml->public));
606 $created_at = notags(unxmlify($xml_created_at));
609 $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
613 if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
614 logger('diaspora_photo: Ignoring this author.');
615 http_status_exit(202);
619 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
620 intval($importer['uid']),
621 dbesc($status_message_guid)
624 logger('diaspora_photo: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid);
627 $parent_item = $r[0];
629 $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n";
631 $r = q("update item set `body` = '%s' where `id` = %d and `uid` = %d limit 1",
632 dbesc($link_text . $parent_item['body']),
633 intval($parent_item['id']),
634 intval($parent_item['uid'])
643 function diaspora_like($importer,$xml,$msg) {
646 $guid = notags(unxmlify($xml->guid));
647 $parent_guid = notags(unxmlify($xml->parent_guid));
648 $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
649 $target_type = notags(unxmlify($xml->target_type));
650 $positive = notags(unxmlify($xml->positive));
651 $author_signature = notags(unxmlify($xml->author_signature));
653 $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : '');
655 // likes on comments not supported here and likes on photos not supported by Diaspora
657 if($target_type !== 'Post')
660 $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']);
664 if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) {
665 logger('diaspora_like: Ignoring this author.');
666 http_status_exit(202);
670 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
671 intval($importer['uid']),
675 logger('diaspora_like: parent item not found: ' . $guid);
679 $parent_item = $r[0];
681 $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1",
682 intval($importer['uid']),
686 if($positive === 'true') {
687 logger('diaspora_like: duplicate like: ' . $guid);
690 if($positive === 'false') {
691 q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d LIMIT 1",
693 intval($importer['uid'])
696 // send notification via proc_run()
700 if($positive === 'false') {
701 logger('diaspora_like: unlike received with no corresponding like');
705 $author_signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle;
707 $author_signature = base64_decode($author_signature);
709 if(strcasecmp($diaspora_handle,$msg['author']) == 0) {
714 $person = find_diaspora_person_by_handle($diaspora_handle);
715 if(is_array($person) && x($person,'pubkey'))
716 $key = $person['pubkey'];
718 logger('diaspora_like: unable to find author details');
723 if(! rsa_verify($author_signed_data,$author_signature,$key,'sha')) {
724 logger('diaspora_like: verification failed.');
728 if($parent_author_signature) {
729 // $owner_signed_data = $guid . ';' . $parent_guid . ';' . $target_type . ';' . $positive . ';' . $msg['author'];
730 $owner_signed_data = $guid . ';' . $parent_guid . ';' . $target_type . ';' . $positive . ';' . $diaspora_handle;
732 $parent_author_signature = base64_decode($parent_author_signature);
736 if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha')) {
737 logger('diaspora_like: owner verification failed.');
742 // Phew! Everything checks out. Now create an item.
744 $uri = $diaspora_handle . ':' . $guid;
746 $activity = ACTIVITY_LIKE;
747 $post_type = (($parent_item['resource-id']) ? t('photo') : t('status'));
748 $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
749 $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . '" />' . "\n") ;
750 $body = $parent_item['body'];
755 <type>$objtype</type>
757 <id>{$parent_item['uri']}</id>
760 <content>$body</content>
763 $bodyverb = t('%1$s likes %2$s\'s %3$s');
768 $arr['uid'] = $importer['uid'];
769 $arr['guid'] = $guid;
770 $arr['contact-id'] = $contact['id'];
771 $arr['type'] = 'activity';
772 $arr['wall'] = $parent_item['wall'];
773 $arr['gravity'] = GRAVITY_LIKE;
774 $arr['parent'] = $parent_item['id'];
775 $arr['parent-uri'] = $parent_item['uri'];
777 $arr['owner-name'] = $contact['name'];
778 $arr['owner-link'] = $contact['url'];
779 $arr['owner-avatar'] = $contact['thumb'];
781 $arr['author-name'] = $person['name'];
782 $arr['author-link'] = $person['url'];
783 $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']);
785 $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
786 $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]';
787 $plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]';
788 $arr['body'] = sprintf( $bodyverb, $ulink, $alink, $plink );
790 $arr['app'] = 'Diaspora';
792 $arr['private'] = $parent_item['private'];
793 $arr['verb'] = $activity;
794 $arr['object-type'] = $objtype;
795 $arr['object'] = $obj;
798 $arr['last-child'] = 0;
800 $message_id = item_store($arr);
802 if(! $parent_author_signature) {
803 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
805 dbesc($author_signed_data),
806 dbesc(base64_encode($author_signature)),
807 dbesc($diaspora_handle)
811 // if the message isn't already being relayed, notify others
812 // the existence of parent_author_signature means the parent_author or owner
813 // is already relaying.
815 if(! $parent_author_signature)
816 proc_run('php','include/notifier.php','comment',$message_id);
821 function diaspora_retraction($importer,$xml) {
823 $guid = notags(unxmlify($xml->guid));
824 $diaspora_handle = notags(unxmlify($xml->diaspora_handle));
825 $type = notags(unxmlify($xml->type));
827 $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle);
831 if($type === 'Person') {
832 contact_remove($contact['id']);
834 elseif($type === 'Post') {
835 $r = q("select * from item where guid = '%s' and uid = %d limit 1",
837 intval($importer['uid'])
840 if(link_compare($r[0]['author-link'],$contact['url'])) {
841 q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d limit 1",
842 dbesc(datetime_convert()),
849 http_exit_status(202);
853 function diaspora_share($me,$contact) {
855 $myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
856 $theiraddr = $contact['addr'];
858 $tpl = get_markup_template('diaspora_share.tpl');
859 $msg = replace_macros($tpl, array(
860 '$sender' => $myaddr,
861 '$recipient' => $theiraddr
864 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
866 return(diaspora_transmit($owner,$contact,$slap));
869 function diaspora_unshare($me,$contact) {
872 $myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
874 $tpl = get_markup_template('diaspora_retract.tpl');
875 $msg = replace_macros($tpl, array(
876 '$guid' => $me['guid'],
881 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])));
883 return(diaspora_transmit($owner,$contact,$slap));
889 function diaspora_send_status($item,$owner,$contact) {
892 $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
893 $theiraddr = $contact['addr'];
897 $body = $item['body'];
899 $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER);
901 foreach($matches as $mtch) {
903 $detail['str'] = $mtch[0];
904 $detail['path'] = dirname($mtch[1]) . '/';
905 $detail['file'] = basename($mtch[1]);
906 $detail['guid'] = $item['guid'];
907 $detail['handle'] = $myaddr;
909 $body = str_replace($detail['str'],t('link'),$body);
913 $body = xmlify(html_entity_decode(bb2diaspora($body)));
915 $public = (($item['private']) ? 'false' : 'true');
917 require_once('include/datetime.php');
918 $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d h:i:s \U\T\C');
920 $tpl = get_markup_template('diaspora_post.tpl');
921 $msg = replace_macros($tpl, array(
923 '$guid' => $item['guid'],
924 '$handle' => xmlify($myaddr),
925 '$public' => $public,
926 '$created' => $created
929 logger('diaspora_send_status: ' . $owner['username'] . ' -> ' . $contact['name'] . ' base message: ' . $msg, LOGGER_DATA);
931 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
933 $return_code = diaspora_transmit($owner,$contact,$slap);
936 diaspora_send_images($item,$owner,$contact,$images);
943 function diaspora_send_images($item,$owner,$contact,$images) {
947 $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo';
949 $tpl = get_markup_template('diaspora_photo.tpl');
950 foreach($images as $image) {
951 if(! stristr($image['path'],$mysite))
953 $resource = str_replace('.jpg','',$image['file']);
954 $resource = substr($resource,0,strpos($resource,'-'));
956 $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1",
958 intval($owner['uid'])
962 $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' );
963 $msg = replace_macros($tpl,array(
964 '$path' => xmlify($image['path']),
965 '$filename' => xmlify($image['file']),
966 '$msg_guid' => xmlify($image['guid']),
967 '$guid' => xmlify($r[0]['guid']),
968 '$handle' => xmlify($image['handle']),
969 '$public' => xmlify($public),
970 '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d h:i:s \U\T\C'))
974 logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA);
975 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
977 diaspora_transmit($owner,$contact,$slap);
982 function diaspora_send_followup($item,$owner,$contact) {
985 $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
986 $theiraddr = $contact['addr'];
988 $p = q("select guid from item where parent = %d limit 1",
992 $parent_guid = $p[0]['guid'];
996 if($item['verb'] === ACTIVITY_LIKE) {
997 $tpl = get_markup_template('diaspora_like.tpl');
999 $target_type = 'Post';
1000 $positive = (($item['deleted']) ? 'false' : 'true');
1003 $tpl = get_markup_template('diaspora_comment.tpl');
1007 $text = html_entity_decode(bb2diaspora($item['body']));
1012 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $myaddr;
1014 $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
1016 $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
1018 $msg = replace_macros($tpl,array(
1019 '$guid' => xmlify($item['guid']),
1020 '$parent_guid' => xmlify($parent_guid),
1021 '$target_type' =>xmlify($target_type),
1022 '$authorsig' => xmlify($authorsig),
1023 '$body' => xmlify($text),
1024 '$positive' => xmlify($positive),
1025 '$handle' => xmlify($myaddr)
1028 logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA);
1030 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
1032 return(diaspora_transmit($owner,$contact,$slap));
1036 function diaspora_send_relay($item,$owner,$contact) {
1040 $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
1041 $theiraddr = $contact['addr'];
1044 $p = q("select guid from item where parent = %d limit 1",
1048 $parent_guid = $p[0]['guid'];
1052 if($item['verb'] === ACTIVITY_LIKE) {
1053 $tpl = get_markup_template('diaspora_like_relay.tpl');
1055 $target_type = 'Post';
1056 $positive = (($item['deleted']) ? 'false' : 'true');
1059 $tpl = get_markup_template('diaspora_comment_relay.tpl');
1063 $body = $item['body'];
1065 $text = html_entity_decode(bb2diaspora($body));
1067 // fetch the original signature if somebody sent the post to us to relay
1068 // If we are relaying for a reply originating on our own account, there wasn't a 'send to relay'
1069 // action. It wasn't needed. In that case create the original signature and the
1070 // owner (parent author) signature
1071 // comments from other networks will be relayed under our name, with a brief
1072 // preamble to describe what's happening and noting the real author
1074 $r = q("select * from sign where iid = %d limit 1",
1079 $signed_text = $orig_sign['signed_text'];
1080 $authorsig = $orig_sign['signature'];
1081 $handle = $orig_sign['signer'];
1085 $itemcontact = q("select * from contact where `id` = %d limit 1",
1086 intval($item['contact-id'])
1088 if(count($itemcontact)) {
1089 if(! $itemcontact[0]['self']) {
1090 $prefix = sprintf( t('[Relayed] Comment authored by %s from network %s'),
1091 '['. $item['author-name'] . ']' . '(' . $item['author-link'] . ')',
1092 network_to_name($itemcontact['network'])) . "\n";
1093 $body = $prefix . $body;
1099 $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $myaddr;
1101 $signed_text = $item['guid'] . ';' . $parent_guid . ';' . $text . ';' . $myaddr;
1103 $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
1105 q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
1106 intval($item['id']),
1107 dbesc($signed_text),
1108 dbesc(base64_encode($authorsig)),
1117 $parentauthorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha'));
1119 $msg = replace_macros($tpl,array(
1120 '$guid' => xmlify($item['guid']),
1121 '$parent_guid' => xmlify($parent_guid),
1122 '$target_type' =>xmlify($target_type),
1123 '$authorsig' => xmlify($orig_sign['signature']),
1124 '$parentsig' => xmlify($parentauthorsig),
1125 '$body' => xmlify($text),
1126 '$positive' => xmlify($positive),
1127 '$handle' => xmlify($handle)
1130 logger('diaspora_relay_comment: base message: ' . $msg, LOGGER_DATA);
1132 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
1134 return(diaspora_transmit($owner,$contact,$slap));
1140 function diaspora_send_retraction($item,$owner,$contact) {
1143 $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3);
1145 $tpl = get_markup_template('diaspora_retract.tpl');
1146 $msg = replace_macros($tpl, array(
1147 '$guid' => $item['guid'],
1149 '$handle' => $myaddr
1152 $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'])));
1154 return(diaspora_transmit($owner,$contact,$slap));
1159 function diaspora_transmit($owner,$contact,$slap) {
1163 post_url($contact['notify'] . '/',$slap);
1164 $return_code = $a->get_curl_code();
1165 logger('diaspora_transmit: returns: ' . $return_code);
1167 if(! $return_code) {
1168 logger('diaspora_transmit: queue message');
1169 // queue message for redelivery
1170 q("INSERT INTO `queue` ( `cid`, `created`, `last`, `content`)
1171 VALUES ( %d, '%s', '%s', '%s') ",
1172 intval($contact['id']),
1173 dbesc(datetime_convert()),
1174 dbesc(datetime_convert()),
1179 return(($return_code) ? $return_code : (-1));