From da982c6c9f64b160bcc8e56cfbb44e96b19d9beb Mon Sep 17 00:00:00 2001 From: friendica Date: Tue, 12 Aug 2014 21:24:36 -0700 Subject: here's the file but I'm less than 5% of the way through porting it. --- include/diaspora.php | 2807 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2807 insertions(+) create mode 100755 include/diaspora.php (limited to 'include') diff --git a/include/diaspora.php b/include/diaspora.php new file mode 100755 index 000000000..bd810710e --- /dev/null +++ b/include/diaspora.php @@ -0,0 +1,2807 @@ +',''), + array('',''), + $msg['message']); + + + $parsed_xml = parse_xml_string($msg['message'],false); + + $xmlbase = $parsed_xml->post; + + logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DEBUG); + + + if($xmlbase->request) { + $ret = diaspora_request($importer,$xmlbase->request); + } + elseif($xmlbase->status_message) { + $ret = diaspora_post($importer,$xmlbase->status_message,$msg); + } + elseif($xmlbase->profile) { + $ret = diaspora_profile($importer,$xmlbase->profile,$msg); + } + elseif($xmlbase->comment) { + $ret = diaspora_comment($importer,$xmlbase->comment,$msg); + } + elseif($xmlbase->like) { + $ret = diaspora_like($importer,$xmlbase->like,$msg); + } + elseif($xmlbase->asphoto) { + $ret = diaspora_asphoto($importer,$xmlbase->asphoto,$msg); + } + elseif($xmlbase->reshare) { + $ret = diaspora_reshare($importer,$xmlbase->reshare,$msg); + } + elseif($xmlbase->retraction) { + $ret = diaspora_retraction($importer,$xmlbase->retraction,$msg); + } + elseif($xmlbase->signed_retraction) { + $ret = diaspora_signed_retraction($importer,$xmlbase->signed_retraction,$msg); + } + elseif($xmlbase->relayable_retraction) { + $ret = diaspora_signed_retraction($importer,$xmlbase->relayable_retraction,$msg); + } + elseif($xmlbase->photo) { + $ret = diaspora_photo($importer,$xmlbase->photo,$msg,$attempt); + } + elseif($xmlbase->conversation) { + $ret = diaspora_conversation($importer,$xmlbase->conversation,$msg); + } + elseif($xmlbase->message) { + $ret = diaspora_message($importer,$xmlbase->message,$msg); + } + else { + logger('diaspora_dispatch: unknown message type: ' . print_r($xmlbase,true)); + } + return $ret; +} + +function diaspora_handle_from_contact($contact_id) { + $handle = false; + + logger("diaspora_handle_from_contact: contact id is " . $contact_id, LOGGER_DEBUG); + + $r = q("SELECT * from abook left join xchan on abook_xchan = xchan_hash where abook_id = %d", + intval($contact_id) + ); + if($r) { + $contact = $r[0]; + +//fixme +// logger("diaspora_handle_from_contact: contact 'self' = " . $contact['self'] . " 'url' = " . $contact['url'], LOGGER_DEBUG); + + if($contact['xchan_network'] === 'diaspora') { + $handle = $contact['addr']; + +// logger("diaspora_handle_from_contact: contact id is a Diaspora person, handle = " . $handle, LOGGER_DEBUG); + } + elseif(($contact['xchan_network'] === 'zot') || ($contact['abook_flags'] & ABOOK_FLAG_SELF)) { + $handle = $contact['xchan_addr']; + + +// logger("diaspora_handle_from_contact: contact id is a redmatrix person, handle = " . $handle, LOGGER_DEBUG); + } + } + + return $handle; +} + +function diaspora_get_contact_by_handle($uid,$handle) { + $r = q("SELECT * FROM xchan where xchan_addr = '%s' limit 1", + dbesc($handle) + ); + if($r) + return $r[0]; + return false; +} + +function find_diaspora_person_by_handle($handle) { + + $person = false; + $update = false; + $got_lock = false; + + $endlessloop = 0; + $maxloops = 10; + + do { + $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1", + dbesc(NETWORK_DIASPORA), + dbesc($handle) + ); + if(count($r)) { + $person = $r[0]; + logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG); + + // update record occasionally so it doesn't get stale + $d = strtotime($person['updated'] . ' +00:00'); + if($d < strtotime('now - 14 days')) + $update = true; + } + + + // FETCHING PERSON INFORMATION FROM REMOTE SERVER + // + // If the person isn't in our 'fcontact' table, or if he/she is but + // his/her information hasn't been updated for more than 14 days, then + // we want to fetch the person's information from the remote server. + // + // Note that $person isn't changed by this block of code unless the + // person's information has been successfully fetched from the remote + // server. So if $person was 'false' to begin with (because he/she wasn't + // in the local cache), it'll stay false, and if $person held the local + // cache information to begin with, it'll keep that information. That way + // if there's a problem with the remote fetch, we can at least use our + // cached information--it's better than nothing. + +//fixme!!! + + if((! $person) || ($update)) { + // Lock the function to prevent race conditions if multiple items + // come in at the same time from a person who doesn't exist in + // fcontact + // + // Don't loop forever. On the last loop, try to create the contact + // whether the function is locked or not. Maybe the locking thread + // has died or something. At any rate, a duplicate in 'fcontact' + // is a much smaller problem than a deadlocked thread +// $got_lock = lock_function('find_diaspora_person_by_handle', false); + if(($endlessloop + 1) >= $maxloops) + $got_lock = true; + + if($got_lock) { + logger('find_diaspora_person_by_handle: create or refresh', LOGGER_DEBUG); + require_once('include/Scrape.php'); + $r = probe_url($handle, PROBE_DIASPORA); + + // Note that Friendica contacts can return a "Diaspora person" + // if Diaspora connectivity is enabled on their server + if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) { + add_fcontact($r,$update); + $person = ($r); + } + +// unlock_function('find_diaspora_person_by_handle'); + } + else { + logger('find_diaspora_person_by_handle: couldn\'t lock function', LOGGER_DEBUG); +// if(! $person) +// block_on_function_lock('find_diaspora_person_by_handle'); + } + } + } while((! $person) && (! $got_lock) && (++$endlessloop < $maxloops)); + + // We need to try again if the person wasn't in 'fcontact' but the function was locked. + // The fact that the function was locked may mean that another process was creating the + // person's record. It could also mean another process was creating or updating an unrelated + // person. + // + // At any rate, we need to keep trying until we've either got the person or had a chance to + // try to fetch his/her remote information. But we don't want to block on locking the + // function, because if the other process is creating the record, then when we acquire the lock + // we'll dive right into creating another, duplicate record. We DO want to at least wait + // until the lock is released, so we don't flood the database with requests. + // + // If the person was in the 'fcontact' table, don't try again. It's not worth the time, since + // we do have some information for the person + + return $person; +} + + +function get_diaspora_key($uri) { + logger('Fetching diaspora key for: ' . $uri); + + $r = find_diaspora_person_by_handle($uri); + if($r) + return $r['pubkey']; + return ''; +} + + +function diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey) { + + $a = get_app(); + + logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA); + + + $handle = $user['xchan_addr']; + + $b64url_data = base64url_encode($msg); + + $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data); + + $type = 'application/xml'; + $encoding = 'base64url'; + $alg = 'RSA-SHA256'; + + $signable_data = $data . '.' . base64url_encode($type) . '.' + . base64url_encode($encoding) . '.' . base64url_encode($alg) ; + + $signature = rsa_sign($signable_data,$prvkey); + $sig = base64url_encode($signature); + +$magic_env = <<< EOT + + +
+ $handle +
+ + base64url + RSA-SHA256 + $data + $sig + + +EOT; + + logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA); + return $magic_env; + +} + + + + +function diaspora_msg_build($msg,$user,$contact,$prvkey,$pubkey,$public = false) { + $a = get_app(); + + if($public) + return diaspora_pubmsg_build($msg,$user,$contact,$prvkey,$pubkey); + + logger('diaspora_msg_build: ' . $msg, LOGGER_DATA); + + // without a public key nothing will work + + if(! $pubkey) { + logger('diaspora_msg_build: pubkey missing: contact id: ' . $contact['abook_id']); + return ''; + } + + $inner_aes_key = random_string(32); + $b_inner_aes_key = base64_encode($inner_aes_key); + $inner_iv = random_string(16); + $b_inner_iv = base64_encode($inner_iv); + + $outer_aes_key = random_string(32); + $b_outer_aes_key = base64_encode($outer_aes_key); + $outer_iv = random_string(16); + $b_outer_iv = base64_encode($outer_iv); + + $handle = $user['xchan_addr']; + + $padded_data = pkcs5_pad($msg,16); + $inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv); + + $b64_data = base64_encode($inner_encrypted); + + + $b64url_data = base64url_encode($b64_data); + $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data); + + $type = 'application/xml'; + $encoding = 'base64url'; + $alg = 'RSA-SHA256'; + + $signable_data = $data . '.' . base64url_encode($type) . '.' + . base64url_encode($encoding) . '.' . base64url_encode($alg) ; + + $signature = rsa_sign($signable_data,$prvkey); + $sig = base64url_encode($signature); + +$decrypted_header = <<< EOT + + $b_inner_iv + $b_inner_aes_key + $handle + +EOT; + + $decrypted_header = pkcs5_pad($decrypted_header,16); + + $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv); + + $outer_json = json_encode(array('iv' => $b_outer_iv,'key' => $b_outer_aes_key)); + + $encrypted_outer_key_bundle = ''; + openssl_public_encrypt($outer_json,$encrypted_outer_key_bundle,$pubkey); + + $b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle); + + logger('outer_bundle: ' . $b64_encrypted_outer_key_bundle . ' key: ' . $pubkey, LOGGER_DATA); + + $encrypted_header_json_object = json_encode(array('aes_key' => base64_encode($encrypted_outer_key_bundle), + 'ciphertext' => base64_encode($ciphertext))); + $cipher_json = base64_encode($encrypted_header_json_object); + + $encrypted_header = '' . $cipher_json . ''; + +$magic_env = <<< EOT + + + $encrypted_header + + base64url + RSA-SHA256 + $data + $sig + + +EOT; + + logger('diaspora_msg_build: magic_env: ' . $magic_env, LOGGER_DATA); + return $magic_env; + +} + +/** + * + * diaspora_decode($importer,$xml) + * array $importer -> from user table + * string $xml -> urldecoded Diaspora salmon + * + * Returns array + * 'message' -> decoded Diaspora XML message + * 'author' -> author diaspora handle + * 'key' -> author public key (converted to pkcs#8) + * + * Author and key are used elsewhere to save a lookup for verifying replies and likes + */ + + +function diaspora_decode($importer,$xml) { + + $public = false; + $basedom = parse_xml_string($xml); + + $children = $basedom->children('https://joindiaspora.com/protocol'); + + if($children->header) { + $public = true; + $author_link = str_replace('acct:','',$children->header->author_id); + } + else { + + $encrypted_header = json_decode(base64_decode($children->encrypted_header)); + + $encrypted_aes_key_bundle = base64_decode($encrypted_header->aes_key); + $ciphertext = base64_decode($encrypted_header->ciphertext); + + $outer_key_bundle = ''; + openssl_private_decrypt($encrypted_aes_key_bundle,$outer_key_bundle,$importer['prvkey']); + + $j_outer_key_bundle = json_decode($outer_key_bundle); + + $outer_iv = base64_decode($j_outer_key_bundle->iv); + $outer_key = base64_decode($j_outer_key_bundle->key); + + $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $outer_key, $ciphertext, MCRYPT_MODE_CBC, $outer_iv); + + + $decrypted = pkcs5_unpad($decrypted); + + /** + * $decrypted now contains something like + * + * + * 8e+G2+ET8l5BPuW0sVTnQw== + * UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU= + +***** OBSOLETE + + * + * Ryan Hughes + * acct:galaxor@diaspora.pirateship.org + * + +***** CURRENT + + * galaxor@diaspora.priateship.org + +***** END DIFFS + + * + */ + + logger('decrypted: ' . $decrypted, LOGGER_DEBUG); + $idom = parse_xml_string($decrypted,false); + + $inner_iv = base64_decode($idom->iv); + $inner_aes_key = base64_decode($idom->aes_key); + + $author_link = str_replace('acct:','',$idom->author_id); + + } + + $dom = $basedom->children(NAMESPACE_SALMON_ME); + + // figure out where in the DOM tree our data is hiding + + if($dom->provenance->data) + $base = $dom->provenance; + elseif($dom->env->data) + $base = $dom->env; + elseif($dom->data) + $base = $dom; + + if(! $base) { + logger('mod-diaspora: unable to locate salmon data in xml '); + http_status_exit(400); + } + + + // Stash the signature away for now. We have to find their key or it won't be good for anything. + $signature = base64url_decode($base->sig); + + // unpack the data + + // strip whitespace so our data element will return to one big base64 blob + $data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data); + + + // stash away some other stuff for later + + $type = $base->data[0]->attributes()->type[0]; + $keyhash = $base->sig[0]->attributes()->keyhash[0]; + $encoding = $base->encoding; + $alg = $base->alg; + + + $signed_data = $data . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg); + + + // decode the data + $data = base64url_decode($data); + + + if($public) { + $inner_decrypted = $data; + } + else { + + // Decode the encrypted blob + + $inner_encrypted = base64_decode($data); + $inner_decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $inner_encrypted, MCRYPT_MODE_CBC, $inner_iv); + $inner_decrypted = pkcs5_unpad($inner_decrypted); + } + + if(! $author_link) { + logger('mod-diaspora: Could not retrieve author URI.'); + http_status_exit(400); + } + + // Once we have the author URI, go to the web and try to find their public key + // (first this will look it up locally if it is in the fcontact cache) + // This will also convert diaspora public key from pkcs#1 to pkcs#8 + + logger('mod-diaspora: Fetching key for ' . $author_link ); + $key = get_diaspora_key($author_link); + + if(! $key) { + logger('mod-diaspora: Could not retrieve author key.'); + http_status_exit(400); + } + + $verify = rsa_verify($signed_data,$signature,$key); + + if(! $verify) { + logger('mod-diaspora: Message did not verify. Discarding.'); + http_status_exit(400); + } + + logger('mod-diaspora: Message verified.'); + + return array('message' => $inner_decrypted, 'author' => $author_link, 'key' => $key); + +} + + +function diaspora_request($importer,$xml) { + + $a = get_app(); + + $sender_handle = unxmlify($xml->sender_handle); + $recipient_handle = unxmlify($xml->recipient_handle); + + if(! $sender_handle || ! $recipient_handle) + return; + + $contact = diaspora_get_contact_by_handle($importer['uid'],$sender_handle); + + if($contact) { + + // perhaps we were already sharing with this person. Now they're sharing with us. + // That makes us friends. + + if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) { + q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d", + intval(CONTACT_IS_FRIEND), + intval($contact['id']), + intval($importer['uid']) + ); + } + // send notification + + $r = q("SELECT `hide-friends` FROM `profile` WHERE `uid` = %d AND `is-default` = 1 LIMIT 1", + intval($importer['uid']) + ); + + if((count($r)) && (! $r[0]['hide-friends']) && (! $contact['hidden'])) { + require_once('include/items.php'); + + $self = q("SELECT * FROM `contact` WHERE `self` = 1 AND `uid` = %d LIMIT 1", + intval($importer['uid']) + ); + + // they are not CONTACT_IS_FOLLOWER anymore but that's what we have in the array + + if(count($self) && $contact['rel'] == CONTACT_IS_FOLLOWER) { + + $arr = array(); + $arr['uri'] = $arr['parent-uri'] = item_new_uri($a->get_hostname(), $importer['uid']); + $arr['uid'] = $importer['uid']; + $arr['contact-id'] = $self[0]['id']; + $arr['wall'] = 1; + $arr['type'] = 'wall'; + $arr['gravity'] = 0; + $arr['origin'] = 1; + $arr['author-name'] = $arr['owner-name'] = $self[0]['name']; + $arr['author-link'] = $arr['owner-link'] = $self[0]['url']; + $arr['author-avatar'] = $arr['owner-avatar'] = $self[0]['thumb']; + $arr['verb'] = ACTIVITY_FRIEND; + $arr['object-type'] = ACTIVITY_OBJ_PERSON; + + $A = '[url=' . $self[0]['url'] . ']' . $self[0]['name'] . '[/url]'; + $B = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]'; + $BPhoto = '[url=' . $contact['url'] . ']' . '[img]' . $contact['thumb'] . '[/img][/url]'; + $arr['body'] = sprintf( t('%1$s is now friends with %2$s'), $A, $B)."\n\n\n".$Bphoto; + + $arr['object'] = '' . ACTIVITY_OBJ_PERSON . '' . $contact['name'] . '' + . '' . $contact['url'] . '/' . $contact['name'] . ''; + $arr['object'] .= '' . xmlify('' . "\n"); + $arr['object'] .= xmlify('' . "\n"); + $arr['object'] .= '' . "\n"; + $arr['last-child'] = 1; + + $arr['allow_cid'] = $user[0]['allow_cid']; + $arr['allow_gid'] = $user[0]['allow_gid']; + $arr['deny_cid'] = $user[0]['deny_cid']; + $arr['deny_gid'] = $user[0]['deny_gid']; + + $i = item_store($arr); + if($i) + proc_run('php',"include/notifier.php","activity","$i"); + + } + + } + + return; + } + + $ret = find_diaspora_person_by_handle($sender_handle); + + + if((! count($ret)) || ($ret['network'] != NETWORK_DIASPORA)) { + logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle); + return; + } + + $batch = (($ret['batch']) ? $ret['batch'] : implode('/', array_slice(explode('/',$ret['url']),0,3)) . '/receive/public'); + + + + $r = q("INSERT INTO `contact` (`uid`, `network`,`addr`,`created`,`url`,`nurl`,`batch`,`name`,`nick`,`photo`,`pubkey`,`notify`,`poll`,`blocked`,`priority`) + VALUES ( %d, '%s', '%s', '%s', '%s','%s','%s','%s','%s','%s','%s','%s','%s',%d,%d) ", + intval($importer['uid']), + dbesc($ret['network']), + dbesc($ret['addr']), + datetime_convert(), + dbesc($ret['url']), + dbesc(normalise_link($ret['url'])), + dbesc($batch), + dbesc($ret['name']), + dbesc($ret['nick']), + dbesc($ret['photo']), + dbesc($ret['pubkey']), + dbesc($ret['notify']), + dbesc($ret['poll']), + 1, + 2 + ); + + // find the contact record we just created + + $contact_record = diaspora_get_contact_by_handle($importer['uid'],$sender_handle); + + if(! $contact_record) { + logger('diaspora_request: unable to locate newly created contact record.'); + return; + } + + $g = q("select def_gid from user where uid = %d limit 1", + intval($importer['uid']) + ); + if($g && intval($g[0]['def_gid'])) { + require_once('include/group.php'); + group_add_member($importer['uid'],'',$contact_record['id'],$g[0]['def_gid']); + } + + if($importer['page-flags'] == PAGE_NORMAL) { + + $hash = random_string() . (string) time(); // Generate a confirm_key + + $ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime` ) + VALUES ( %d, %d, %d, %d, '%s', '%s', '%s' )", + intval($importer['uid']), + intval($contact_record['id']), + 0, + 0, + dbesc( t('Sharing notification from Diaspora network')), + dbesc($hash), + dbesc(datetime_convert()) + ); + } + else { + + // automatic friend approval + + require_once('include/Photo.php'); + + $photos = import_profile_photo($contact_record['photo'],$importer['uid'],$contact_record['id']); + + // technically they are sharing with us (CONTACT_IS_SHARING), + // but if our page-type is PAGE_COMMUNITY or PAGE_SOAPBOX + // we are going to change the relationship and make them a follower. + + if($importer['page-flags'] == PAGE_FREELOVE) + $new_relation = CONTACT_IS_FRIEND; + else + $new_relation = CONTACT_IS_FOLLOWER; + + $r = q("UPDATE `contact` SET + `photo` = '%s', + `thumb` = '%s', + `micro` = '%s', + `rel` = %d, + `name-date` = '%s', + `uri-date` = '%s', + `avatar-date` = '%s', + `blocked` = 0, + `pending` = 0 + WHERE `id` = %d + ", + dbesc($photos[0]), + dbesc($photos[1]), + dbesc($photos[2]), + intval($new_relation), + dbesc(datetime_convert()), + dbesc(datetime_convert()), + dbesc(datetime_convert()), + intval($contact_record['id']) + ); + + $u = q("select * from user where uid = %d limit 1",intval($importer['uid'])); + if($u) + $ret = diaspora_share($u[0],$contact_record); + } + + return; +} + +function diaspora_post_allow($importer,$contact) { + + // perhaps we were already sharing with this person. Now they're sharing with us. + // That makes us friends. + // Normally this should have handled by getting a request - but this could get lost + if($contact['rel'] == CONTACT_IS_FOLLOWER && $importer['page-flags'] != PAGE_COMMUNITY) { + q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d", + intval(CONTACT_IS_FRIEND), + intval($contact['id']), + intval($importer['uid']) + ); + $contact['rel'] = CONTACT_IS_FRIEND; + logger('diaspora_post_allow: defining user '.$contact["nick"].' as friend'); + } + + if(($contact['blocked']) || ($contact['readonly']) || ($contact['archive'])) + return false; + if($contact['rel'] == CONTACT_IS_SHARING || $contact['rel'] == CONTACT_IS_FRIEND) + return true; + if($contact['rel'] == CONTACT_IS_FOLLOWER) + if($importer['page-flags'] == PAGE_COMMUNITY) + return true; + return false; +} + + +function diaspora_post($importer,$xml,$msg) { + + $a = get_app(); + $guid = notags(unxmlify($xml->guid)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + + if($diaspora_handle != $msg['author']) { + logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.'); + return 202; + } + + $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle); + if(! $contact) + return; + + if(! diaspora_post_allow($importer,$contact)) { + logger('diaspora_post: Ignoring this author.'); + return 202; + } + + $message_id = $diaspora_handle . ':' . $guid; + $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($message_id), + dbesc($guid) + ); + if(count($r)) { + logger('diaspora_post: message exists: ' . $guid); + return; + } + + // allocate a guid on our system - we aren't fixing any collisions. + // we're ignoring them + + $g = q("select * from guid where guid = '%s' limit 1", + dbesc($guid) + ); + if(! count($g)) { + q("insert into guid ( guid ) values ( '%s' )", + dbesc($guid) + ); + } + + $created = unxmlify($xml->created_at); + $private = ((unxmlify($xml->public) == 'false') ? 1 : 0); + + $body = diaspora2bb($xml->raw_message); + + // Add OEmbed and other information to the body + $body = add_page_info_to_body($body, false, true); + + $datarray = array(); + + $str_tags = ''; + + $tags = get_tags($body); + + if(count($tags)) { + foreach($tags as $tag) { + if(strpos($tag,'#') === 0) { + if(strpos($tag,'[url=')) + continue; + + // don't link tags that are already embedded in links + + if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body)) + continue; + if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body)) + continue; + + $basetag = str_replace('_',' ',substr($tag,1)); + $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body); + if(strlen($str_tags)) + $str_tags .= ','; + $str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]'; + continue; + } + } + } + + $cnt = preg_match_all('/@\[url=(.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER); + if($cnt) { + foreach($matches as $mtch) { + if(strlen($str_tags)) + $str_tags .= ','; + $str_tags .= '@[url=' . $mtch[1] . '[/url]'; + } + } + + $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid; + + $datarray['uid'] = $importer['uid']; + $datarray['contact-id'] = $contact['id']; + $datarray['wall'] = 0; + $datarray['network'] = NETWORK_DIASPORA; + $datarray['verb'] = ACTIVITY_POST; + $datarray['guid'] = $guid; + $datarray['uri'] = $datarray['parent-uri'] = $message_id; + $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created); + $datarray['private'] = $private; + $datarray['parent'] = 0; + $datarray['plink'] = $plink; + $datarray['owner-name'] = $contact['name']; + $datarray['owner-link'] = $contact['url']; + //$datarray['owner-avatar'] = $contact['thumb']; + $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']); + $datarray['author-name'] = $contact['name']; + $datarray['author-link'] = $contact['url']; + $datarray['author-avatar'] = $contact['thumb']; + $datarray['body'] = $body; + $datarray['tag'] = $str_tags; + $datarray['app'] = 'Diaspora'; + + // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. + + $datarray['visible'] = ((strlen($body)) ? 1 : 0); + + $message_id = item_store($datarray); + + //if($message_id) { + // q("update item set plink = '%s' where id = %d", + // dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id), + // intval($message_id) + // ); + //} + + return; + +} + +function diaspora_reshare($importer,$xml,$msg) { + + logger('diaspora_reshare: init: ' . print_r($xml,true)); + + $a = get_app(); + $guid = notags(unxmlify($xml->guid)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + + + if($diaspora_handle != $msg['author']) { + logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.'); + return 202; + } + + $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle); + if(! $contact) + return; + + if(! diaspora_post_allow($importer,$contact)) { + logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true)); + return 202; + } + + $message_id = $diaspora_handle . ':' . $guid; + $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($message_id), + dbesc($guid) + ); + if(count($r)) { + logger('diaspora_reshare: message exists: ' . $guid); + return; + } + + $orig_author = notags(unxmlify($xml->root_diaspora_id)); + $orig_guid = notags(unxmlify($xml->root_guid)); + + $source_url = 'https://' . substr($orig_author,strpos($orig_author,'@')+1) . '/p/' . $orig_guid . '.xml'; + $orig_url = 'https://'.substr($orig_author,strpos($orig_author,'@')+1).'/posts/'.$orig_guid; + $x = fetch_url($source_url); + if(! $x) + $x = fetch_url(str_replace('https://','http://',$source_url)); + if(! $x) { + logger('diaspora_reshare: unable to fetch source url ' . $source_url); + return; + } + logger('diaspora_reshare: source: ' . $x); + + $x = str_replace(array('',''),array('',''),$x); + $source_xml = parse_xml_string($x,false); + + if(strlen($source_xml->post->asphoto->objectId) && ($source_xml->post->asphoto->objectId != 0) && ($source_xml->post->asphoto->image_url)) { + $body = '[url=' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '][img]' . notags(unxmlify($source_xml->post->asphoto->objectId)) . '[/img][/url]' . "\n"; + $body = scale_external_images($body,false); + } + elseif($source_xml->post->asphoto->image_url) { + $body = '[img]' . notags(unxmlify($source_xml->post->asphoto->image_url)) . '[/img]' . "\n"; + $body = scale_external_images($body); + } + elseif($source_xml->post->status_message) { + $body = diaspora2bb($source_xml->post->status_message->raw_message); + + // Checking for embedded pictures + if($source_xml->post->status_message->photo->remote_photo_path AND + $source_xml->post->status_message->photo->remote_photo_name) { + + $remote_photo_path = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_path)); + $remote_photo_name = notags(unxmlify($source_xml->post->status_message->photo->remote_photo_name)); + + $body = '[img]'.$remote_photo_path.$remote_photo_name.'[/img]'."\n".$body; + + logger('diaspora_reshare: embedded picture link found: '.$body, LOGGER_DEBUG); + } + + $body = scale_external_images($body); + + // Add OEmbed and other information to the body + $body = add_page_info_to_body($body, false, true); + } + else { + // Maybe it is a reshare of a photo that will be delivered at a later time (testing) + logger('diaspora_reshare: no reshare content found: ' . print_r($source_xml,true)); + $body = ""; + //return; + } + + //if(! $body) { + // logger('diaspora_reshare: empty body: source= ' . $x); + // return; + //} + + $person = find_diaspora_person_by_handle($orig_author); + + /*if(is_array($person) && x($person,'name') && x($person,'url')) + $details = '[url=' . $person['url'] . ']' . $person['name'] . '[/url]'; + else + $details = $orig_author; + + $prefix = html_entity_decode("♲ ", ENT_QUOTES, 'UTF-8') . $details . "\n";*/ + + + // allocate a guid on our system - we aren't fixing any collisions. + // we're ignoring them + + $g = q("select * from guid where guid = '%s' limit 1", + dbesc($guid) + ); + if(! count($g)) { + q("insert into guid ( guid ) values ( '%s' )", + dbesc($guid) + ); + } + + $created = unxmlify($xml->created_at); + $private = ((unxmlify($xml->public) == 'false') ? 1 : 0); + + $datarray = array(); + + $str_tags = ''; + + $tags = get_tags($body); + + if(count($tags)) { + foreach($tags as $tag) { + if(strpos($tag,'#') === 0) { + if(strpos($tag,'[url=')) + continue; + + // don't link tags that are already embedded in links + + if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body)) + continue; + if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body)) + continue; + + + $basetag = str_replace('_',' ',substr($tag,1)); + $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body); + if(strlen($str_tags)) + $str_tags .= ','; + $str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]'; + continue; + } + } + } + + $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid; + + $datarray['uid'] = $importer['uid']; + $datarray['contact-id'] = $contact['id']; + $datarray['wall'] = 0; + $datarray['network'] = NETWORK_DIASPORA; + $datarray['guid'] = $guid; + $datarray['uri'] = $datarray['parent-uri'] = $message_id; + $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created); + $datarray['private'] = $private; + $datarray['parent'] = 0; + $datarray['plink'] = $plink; + $datarray['owner-name'] = $contact['name']; + $datarray['owner-link'] = $contact['url']; + $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']); + if (!intval(get_config('system','wall-to-wall_share'))) { + $prefix = "[share author='".str_replace(array("'", "[", "]"), array("'", "[", "]"),$person['name']). + "' profile='".$person['url']. + "' avatar='".((x($person,'thumb')) ? $person['thumb'] : $person['photo']). + "' link='".str_replace(array("'", "[", "]"), array("'", "[", "]"),$orig_url)."']"; + $datarray['author-name'] = $contact['name']; + $datarray['author-link'] = $contact['url']; + $datarray['author-avatar'] = $contact['thumb']; + $datarray['body'] = $prefix.$body."[/share]"; + } else { + // Let reshared messages look like wall-to-wall posts + $datarray['author-name'] = $person['name']; + $datarray['author-link'] = $person['url']; + $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']); + $datarray['body'] = $body; + } + + $datarray['tag'] = $str_tags; + $datarray['app'] = 'Diaspora'; + + // if empty content it might be a photo that hasn't arrived yet. If a photo arrives, we'll make it visible. (testing) + $datarray['visible'] = ((strlen($body)) ? 1 : 0); + + $message_id = item_store($datarray); + + //if($message_id) { + // q("update item set plink = '%s' where id = %d", + // dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id), + // intval($message_id) + // ); + //} + + return; + +} + + +function diaspora_asphoto($importer,$xml,$msg) { + logger('diaspora_asphoto called'); + + $a = get_app(); + $guid = notags(unxmlify($xml->guid)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + + if($diaspora_handle != $msg['author']) { + logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.'); + return 202; + } + + $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle); + if(! $contact) + return; + + if(! diaspora_post_allow($importer,$contact)) { + logger('diaspora_asphoto: Ignoring this author.'); + return 202; + } + + $message_id = $diaspora_handle . ':' . $guid; + $r = q("SELECT `id` FROM `item` WHERE `uid` = %d AND `uri` = '%s' AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($message_id), + dbesc($guid) + ); + if(count($r)) { + logger('diaspora_asphoto: message exists: ' . $guid); + return; + } + + // allocate a guid on our system - we aren't fixing any collisions. + // we're ignoring them + + $g = q("select * from guid where guid = '%s' limit 1", + dbesc($guid) + ); + if(! count($g)) { + q("insert into guid ( guid ) values ( '%s' )", + dbesc($guid) + ); + } + + $created = unxmlify($xml->created_at); + $private = ((unxmlify($xml->public) == 'false') ? 1 : 0); + + if(strlen($xml->objectId) && ($xml->objectId != 0) && ($xml->image_url)) { + $body = '[url=' . notags(unxmlify($xml->image_url)) . '][img]' . notags(unxmlify($xml->objectId)) . '[/img][/url]' . "\n"; + $body = scale_external_images($body,false); + } + elseif($xml->image_url) { + $body = '[img]' . notags(unxmlify($xml->image_url)) . '[/img]' . "\n"; + $body = scale_external_images($body); + } + else { + logger('diaspora_asphoto: no photo url found.'); + return; + } + + $plink = 'https://'.substr($diaspora_handle,strpos($diaspora_handle,'@')+1).'/posts/'.$guid; + + $datarray = array(); + + $datarray['uid'] = $importer['uid']; + $datarray['contact-id'] = $contact['id']; + $datarray['wall'] = 0; + $datarray['network'] = NETWORK_DIASPORA; + $datarray['guid'] = $guid; + $datarray['uri'] = $datarray['parent-uri'] = $message_id; + $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created); + $datarray['private'] = $private; + $datarray['parent'] = 0; + $datarray['plink'] = $plink; + $datarray['owner-name'] = $contact['name']; + $datarray['owner-link'] = $contact['url']; + //$datarray['owner-avatar'] = $contact['thumb']; + $datarray['owner-avatar'] = ((x($contact,'thumb')) ? $contact['thumb'] : $contact['photo']); + $datarray['author-name'] = $contact['name']; + $datarray['author-link'] = $contact['url']; + $datarray['author-avatar'] = $contact['thumb']; + $datarray['body'] = $body; + + $datarray['app'] = 'Diaspora/Cubbi.es'; + + $message_id = item_store($datarray); + + //if($message_id) { + // q("update item set plink = '%s' where id = %d", + // dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id), + // intval($message_id) + // ); + //} + + return; + +} + + + + + + +function diaspora_comment($importer,$xml,$msg) { + + $a = get_app(); + $guid = notags(unxmlify($xml->guid)); + $parent_guid = notags(unxmlify($xml->parent_guid)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + $target_type = notags(unxmlify($xml->target_type)); + $text = unxmlify($xml->text); + $author_signature = notags(unxmlify($xml->author_signature)); + + $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : ''); + + $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']); + if(! $contact) { + logger('diaspora_comment: cannot find contact: ' . $msg['author']); + return; + } + + if(! diaspora_post_allow($importer,$contact)) { + logger('diaspora_comment: Ignoring this author.'); + return 202; + } + + $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($guid) + ); + if(count($r)) { + logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid); + return; + } + + $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($parent_guid) + ); + if(! count($r)) { + logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid); + return; + } + $parent_item = $r[0]; + + + /* How Diaspora performs comment signature checking: + + - If an item has been sent by the comment author to the top-level post owner to relay on + to the rest of the contacts on the top-level post, the top-level post owner should check + the author_signature, then create a parent_author_signature before relaying the comment on + - If an item has been relayed on by the top-level post owner, the contacts who receive it + check only the parent_author_signature. Basically, they trust that the top-level post + owner has already verified the authenticity of anything he/she sends out + - In either case, the signature that get checked is the signature created by the person + who sent the salmon + */ + + $signed_data = $guid . ';' . $parent_guid . ';' . $text . ';' . $diaspora_handle; + $key = $msg['key']; + + if($parent_author_signature) { + // If a parent_author_signature exists, then we've received the comment + // relayed from the top-level post owner. There's no need to check the + // author_signature if the parent_author_signature is valid + + $parent_author_signature = base64_decode($parent_author_signature); + + if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) { + logger('diaspora_comment: top-level owner verification failed.'); + return; + } + } + else { + // If there's no parent_author_signature, then we've received the comment + // from the comment creator. In that case, the person is commenting on + // our post, so he/she must be a contact of ours and his/her public key + // should be in $msg['key'] + + $author_signature = base64_decode($author_signature); + + if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) { + logger('diaspora_comment: comment author verification failed.'); + return; + } + } + + // Phew! Everything checks out. Now create an item. + + // Find the original comment author information. + // We need this to make sure we display the comment author + // information (name and avatar) correctly. + if(strcasecmp($diaspora_handle,$msg['author']) == 0) + $person = $contact; + else { + $person = find_diaspora_person_by_handle($diaspora_handle); + + if(! is_array($person)) { + logger('diaspora_comment: unable to find author details'); + return; + } + } + + $body = diaspora2bb($text); + $message_id = $diaspora_handle . ':' . $guid; + + $datarray = array(); + + $str_tags = ''; + + $tags = get_tags($body); + + if(count($tags)) { + foreach($tags as $tag) { + if(strpos($tag,'#') === 0) { + if(strpos($tag,'[url=')) + continue; + + // don't link tags that are already embedded in links + + if(preg_match('/\[(.*?)' . preg_quote($tag,'/') . '(.*?)\]/',$body)) + continue; + if(preg_match('/\[(.*?)\]\((.*?)' . preg_quote($tag,'/') . '(.*?)\)/',$body)) + continue; + + + $basetag = str_replace('_',' ',substr($tag,1)); + $body = str_replace($tag,'#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]',$body); + if(strlen($str_tags)) + $str_tags .= ','; + $str_tags .= '#[url=' . $a->get_baseurl() . '/search?tag=' . rawurlencode($basetag) . ']' . $basetag . '[/url]'; + continue; + } + } + } + + $datarray['uid'] = $importer['uid']; + $datarray['contact-id'] = $contact['id']; + $datarray['type'] = 'remote-comment'; + $datarray['wall'] = $parent_item['wall']; + $datarray['network'] = NETWORK_DIASPORA; + $datarray['verb'] = ACTIVITY_POST; + $datarray['gravity'] = GRAVITY_COMMENT; + $datarray['guid'] = $guid; + $datarray['uri'] = $message_id; + $datarray['parent-uri'] = $parent_item['uri']; + + // No timestamps for comments? OK, we'll the use current time. + $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert(); + $datarray['private'] = $parent_item['private']; + + $datarray['owner-name'] = $parent_item['owner-name']; + $datarray['owner-link'] = $parent_item['owner-link']; + $datarray['owner-avatar'] = $parent_item['owner-avatar']; + + $datarray['author-name'] = $person['name']; + $datarray['author-link'] = $person['url']; + $datarray['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']); + $datarray['body'] = $body; + $datarray['tag'] = $str_tags; + + // We can't be certain what the original app is if the message is relayed. + if(($parent_item['origin']) && (! $parent_author_signature)) + $datarray['app'] = 'Diaspora'; + + $message_id = item_store($datarray); + + //if($message_id) { + //q("update item set plink = '%s' where id = %d", + // //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id), + // dbesc($a->get_baseurl().'/display/'.$datarray['guid']), + // intval($message_id) + //); + //} + + if(($parent_item['origin']) && (! $parent_author_signature)) { + q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ", + intval($message_id), + dbesc($signed_data), + dbesc(base64_encode($author_signature)), + dbesc($diaspora_handle) + ); + + // if the message isn't already being relayed, notify others + // the existence of parent_author_signature means the parent_author or owner + // is already relaying. + + proc_run('php','include/notifier.php','comment-import',$message_id); + } + + $myconv = q("SELECT `author-link`, `author-avatar`, `parent` FROM `item` WHERE `parent-uri` = '%s' AND `uid` = %d AND `parent` != 0 AND `deleted` = 0 ", + dbesc($parent_item['uri']), + intval($importer['uid']) + ); + + if(count($myconv)) { + $importer_url = $a->get_baseurl() . '/profile/' . $importer['nickname']; + + foreach($myconv as $conv) { + + // now if we find a match, it means we're in this conversation + + if(! link_compare($conv['author-link'],$importer_url)) + continue; + + require_once('include/enotify.php'); + + $conv_parent = $conv['parent']; + + notification(array( + 'type' => NOTIFY_COMMENT, + 'notify_flags' => $importer['notify-flags'], + 'language' => $importer['language'], + 'to_name' => $importer['username'], + 'to_email' => $importer['email'], + 'uid' => $importer['uid'], + 'item' => $datarray, + //'link' => $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id, + 'link' => $a->get_baseurl().'/display/'.$datarray['guid'], + 'source_name' => $datarray['author-name'], + 'source_link' => $datarray['author-link'], + 'source_photo' => $datarray['author-avatar'], + 'verb' => ACTIVITY_POST, + 'otype' => 'item', + 'parent' => $conv_parent, + 'parent_uri' => $parent_uri + )); + + // only send one notification + break; + } + } + return; +} + + + + +function diaspora_conversation($importer,$xml,$msg) { + + $a = get_app(); + + $guid = notags(unxmlify($xml->guid)); + $subject = notags(unxmlify($xml->subject)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + $participant_handles = notags(unxmlify($xml->participant_handles)); + $created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at))); + + $parent_uri = $diaspora_handle . ':' . $guid; + + $messages = $xml->message; + + if(! count($messages)) { + logger('diaspora_conversation: empty conversation'); + return; + } + + $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']); + if(! $contact) { + logger('diaspora_conversation: cannot find contact: ' . $msg['author']); + return; + } + + if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { + logger('diaspora_conversation: Ignoring this author.'); + return 202; + } + + $conversation = null; + + $c = q("select * from conv where uid = %d and guid = '%s' limit 1", + intval($importer['uid']), + dbesc($guid) + ); + if(count($c)) + $conversation = $c[0]; + else { + $r = q("insert into conv (uid,guid,creator,created,updated,subject,recips) values(%d, '%s', '%s', '%s', '%s', '%s', '%s') ", + intval($importer['uid']), + dbesc($guid), + dbesc($diaspora_handle), + dbesc(datetime_convert('UTC','UTC',$created_at)), + dbesc(datetime_convert()), + dbesc($subject), + dbesc($participant_handles) + ); + if($r) + $c = q("select * from conv where uid = %d and guid = '%s' limit 1", + intval($importer['uid']), + dbesc($guid) + ); + if(count($c)) + $conversation = $c[0]; + } + if(! $conversation) { + logger('diaspora_conversation: unable to create conversation.'); + return; + } + + foreach($messages as $mesg) { + + $reply = 0; + + $msg_guid = notags(unxmlify($mesg->guid)); + $msg_parent_guid = notags(unxmlify($mesg->parent_guid)); + $msg_parent_author_signature = notags(unxmlify($mesg->parent_author_signature)); + $msg_author_signature = notags(unxmlify($mesg->author_signature)); + $msg_text = unxmlify($mesg->text); + $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($mesg->created_at))); + $msg_diaspora_handle = notags(unxmlify($mesg->diaspora_handle)); + $msg_conversation_guid = notags(unxmlify($mesg->conversation_guid)); + if($msg_conversation_guid != $guid) { + logger('diaspora_conversation: message conversation guid does not belong to the current conversation. ' . $xml); + continue; + } + + $body = diaspora2bb($msg_text); + $message_id = $msg_diaspora_handle . ':' . $msg_guid; + + $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid; + + $author_signature = base64_decode($msg_author_signature); + + if(strcasecmp($msg_diaspora_handle,$msg['author']) == 0) { + $person = $contact; + $key = $msg['key']; + } + else { + $person = find_diaspora_person_by_handle($msg_diaspora_handle); + + if(is_array($person) && x($person,'pubkey')) + $key = $person['pubkey']; + else { + logger('diaspora_conversation: unable to find author details'); + continue; + } + } + + if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) { + logger('diaspora_conversation: verification failed.'); + continue; + } + + if($msg_parent_author_signature) { + $owner_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($mesg->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid; + + $parent_author_signature = base64_decode($msg_parent_author_signature); + + $key = $msg['key']; + + if(! rsa_verify($owner_signed_data,$parent_author_signature,$key,'sha256')) { + logger('diaspora_conversation: owner verification failed.'); + continue; + } + } + + $r = q("select id from mail where `uri` = '%s' limit 1", + dbesc($message_id) + ); + if(count($r)) { + logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG); + continue; + } + + q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')", + intval($importer['uid']), + dbesc($msg_guid), + intval($conversation['id']), + dbesc($person['name']), + dbesc($person['photo']), + dbesc($person['url']), + intval($contact['id']), + dbesc($subject), + dbesc($body), + 0, + 0, + dbesc($message_id), + dbesc($parent_uri), + dbesc($msg_created_at) + ); + + q("update conv set updated = '%s' where id = %d", + dbesc(datetime_convert()), + intval($conversation['id']) + ); + + require_once('include/enotify.php'); + notification(array( + 'type' => NOTIFY_MAIL, + 'notify_flags' => $importer['notify-flags'], + 'language' => $importer['language'], + 'to_name' => $importer['username'], + 'to_email' => $importer['email'], + 'uid' =>$importer['importer_uid'], + 'item' => array('subject' => $subject, 'body' => $body), + 'source_name' => $person['name'], + 'source_link' => $person['url'], + 'source_photo' => $person['thumb'], + 'verb' => ACTIVITY_POST, + 'otype' => 'mail' + )); + } + + return; +} + +function diaspora_message($importer,$xml,$msg) { + + $a = get_app(); + + $msg_guid = notags(unxmlify($xml->guid)); + $msg_parent_guid = notags(unxmlify($xml->parent_guid)); + $msg_parent_author_signature = notags(unxmlify($xml->parent_author_signature)); + $msg_author_signature = notags(unxmlify($xml->author_signature)); + $msg_text = unxmlify($xml->text); + $msg_created_at = datetime_convert('UTC','UTC',notags(unxmlify($xml->created_at))); + $msg_diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + $msg_conversation_guid = notags(unxmlify($xml->conversation_guid)); + + $parent_uri = $diaspora_handle . ':' . $msg_parent_guid; + + $contact = diaspora_get_contact_by_handle($importer['uid'],$msg_diaspora_handle); + if(! $contact) { + logger('diaspora_message: cannot find contact: ' . $msg_diaspora_handle); + return; + } + + if(($contact['rel'] == CONTACT_IS_FOLLOWER) || ($contact['blocked']) || ($contact['readonly'])) { + logger('diaspora_message: Ignoring this author.'); + return 202; + } + + $conversation = null; + + $c = q("select * from conv where uid = %d and guid = '%s' limit 1", + intval($importer['uid']), + dbesc($msg_conversation_guid) + ); + if(count($c)) + $conversation = $c[0]; + else { + logger('diaspora_message: conversation not available.'); + return; + } + + $reply = 0; + + $body = diaspora2bb($msg_text); + $message_id = $msg_diaspora_handle . ':' . $msg_guid; + + $author_signed_data = $msg_guid . ';' . $msg_parent_guid . ';' . $msg_text . ';' . unxmlify($xml->created_at) . ';' . $msg_diaspora_handle . ';' . $msg_conversation_guid; + + + $author_signature = base64_decode($msg_author_signature); + + $person = find_diaspora_person_by_handle($msg_diaspora_handle); + if(is_array($person) && x($person,'pubkey')) + $key = $person['pubkey']; + else { + logger('diaspora_message: unable to find author details'); + return; + } + + if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) { + logger('diaspora_message: verification failed.'); + return; + } + + $r = q("select id from mail where `uri` = '%s' and uid = %d limit 1", + dbesc($message_id), + intval($importer['uid']) + ); + if(count($r)) { + logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG); + return; + } + + q("insert into mail ( `uid`, `guid`, `convid`, `from-name`,`from-photo`,`from-url`,`contact-id`,`title`,`body`,`seen`,`reply`,`uri`,`parent-uri`,`created`) values ( %d, '%s', %d, '%s', '%s', '%s', %d, '%s', '%s', %d, %d, '%s','%s','%s')", + intval($importer['uid']), + dbesc($msg_guid), + intval($conversation['id']), + dbesc($person['name']), + dbesc($person['photo']), + dbesc($person['url']), + intval($contact['id']), + dbesc($conversation['subject']), + dbesc($body), + 0, + 1, + dbesc($message_id), + dbesc($parent_uri), + dbesc($msg_created_at) + ); + + q("update conv set updated = '%s' where id = %d", + dbesc(datetime_convert()), + intval($conversation['id']) + ); + + return; +} + + +function diaspora_photo($importer,$xml,$msg,$attempt=1) { + + $a = get_app(); + + logger('diaspora_photo: init',LOGGER_DEBUG); + + $remote_photo_path = notags(unxmlify($xml->remote_photo_path)); + + $remote_photo_name = notags(unxmlify($xml->remote_photo_name)); + + $status_message_guid = notags(unxmlify($xml->status_message_guid)); + + $guid = notags(unxmlify($xml->guid)); + + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + + $public = notags(unxmlify($xml->public)); + + $created_at = notags(unxmlify($xml_created_at)); + + logger('diaspora_photo: status_message_guid: ' . $status_message_guid, LOGGER_DEBUG); + + $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']); + if(! $contact) { + logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle); + return; + } + + if(! diaspora_post_allow($importer,$contact)) { + logger('diaspora_photo: Ignoring this author.'); + return 202; + } + + $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($status_message_guid) + ); + if(! count($r)) { + if($attempt <= 3) { + q("INSERT INTO dsprphotoq (uid, msg, attempt) VALUES (%d, '%s', %d)", + intval($importer['uid']), + dbesc(serialize($msg)), + intval($attempt + 1) + ); + } + logger('diaspora_photo: attempt = ' . $attempt . '; status message not found: ' . $status_message_guid . ' for photo: ' . $guid); + return; + } + + $parent_item = $r[0]; + + $link_text = '[img]' . $remote_photo_path . $remote_photo_name . '[/img]' . "\n"; + + $link_text = scale_external_images($link_text, true, + array($remote_photo_name, 'scaled_full_' . $remote_photo_name)); + + if(strpos($parent_item['body'],$link_text) === false) { + $r = q("update item set `body` = '%s', `visible` = 1 where `id` = %d and `uid` = %d", + dbesc($link_text . $parent_item['body']), + intval($parent_item['id']), + intval($parent_item['uid']) + ); + } + + return; +} + + + + +function diaspora_like($importer,$xml,$msg) { + + $a = get_app(); + $guid = notags(unxmlify($xml->guid)); + $parent_guid = notags(unxmlify($xml->parent_guid)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + $target_type = notags(unxmlify($xml->target_type)); + $positive = notags(unxmlify($xml->positive)); + $author_signature = notags(unxmlify($xml->author_signature)); + + $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : ''); + + // likes on comments not supported here and likes on photos not supported by Diaspora + +// if($target_type !== 'Post') +// return; + + $contact = diaspora_get_contact_by_handle($importer['uid'],$msg['author']); + if(! $contact) { + logger('diaspora_like: cannot find contact: ' . $msg['author']); + return; + } + + if(! diaspora_post_allow($importer,$contact)) { + logger('diaspora_like: Ignoring this author.'); + return 202; + } + + $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($parent_guid) + ); + if(! count($r)) { + logger('diaspora_like: parent item not found: ' . $guid); + return; + } + + $parent_item = $r[0]; + + $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `guid` = '%s' LIMIT 1", + intval($importer['uid']), + dbesc($guid) + ); + if(count($r)) { + if($positive === 'true') { + logger('diaspora_like: duplicate like: ' . $guid); + return; + } + // Note: I don't think "Like" objects with positive = "false" are ever actually used + // It looks like "RelayableRetractions" are used for "unlike" instead + if($positive === 'false') { + logger('diaspora_like: received a like with positive set to "false"...ignoring'); +/* q("UPDATE `item` SET `deleted` = 1 WHERE `id` = %d AND `uid` = %d", + intval($r[0]['id']), + intval($importer['uid']) + );*/ + // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes + // send notification via proc_run() + return; + } + } + // Note: I don't think "Like" objects with positive = "false" are ever actually used + // It looks like "RelayableRetractions" are used for "unlike" instead + if($positive === 'false') { + logger('diaspora_like: received a like with positive set to "false"'); + logger('diaspora_like: unlike received with no corresponding like...ignoring'); + return; + } + + + /* How Diaspora performs "like" signature checking: + + - If an item has been sent by the like author to the top-level post owner to relay on + to the rest of the contacts on the top-level post, the top-level post owner should check + the author_signature, then create a parent_author_signature before relaying the like on + - If an item has been relayed on by the top-level post owner, the contacts who receive it + check only the parent_author_signature. Basically, they trust that the top-level post + owner has already verified the authenticity of anything he/she sends out + - In either case, the signature that get checked is the signature created by the person + who sent the salmon + */ + + $signed_data = $guid . ';' . $target_type . ';' . $parent_guid . ';' . $positive . ';' . $diaspora_handle; + $key = $msg['key']; + + if($parent_author_signature) { + // If a parent_author_signature exists, then we've received the like + // relayed from the top-level post owner. There's no need to check the + // author_signature if the parent_author_signature is valid + + $parent_author_signature = base64_decode($parent_author_signature); + + if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) { + if (intval(get_config('system','ignore_diaspora_like_signature'))) + logger('diaspora_like: top-level owner verification failed. Proceeding anyway.'); + else { + logger('diaspora_like: top-level owner verification failed.'); + return; + } + } + } + else { + // If there's no parent_author_signature, then we've received the like + // from the like creator. In that case, the person is "like"ing + // our post, so he/she must be a contact of ours and his/her public key + // should be in $msg['key'] + + $author_signature = base64_decode($author_signature); + + if(! rsa_verify($signed_data,$author_signature,$key,'sha256')) { + if (intval(get_config('system','ignore_diaspora_like_signature'))) + logger('diaspora_like: like creator verification failed. Proceeding anyway'); + else { + logger('diaspora_like: like creator verification failed.'); + return; + } + } + } + + // Phew! Everything checks out. Now create an item. + + // Find the original comment author information. + // We need this to make sure we display the comment author + // information (name and avatar) correctly. + if(strcasecmp($diaspora_handle,$msg['author']) == 0) + $person = $contact; + else { + $person = find_diaspora_person_by_handle($diaspora_handle); + + if(! is_array($person)) { + logger('diaspora_like: unable to find author details'); + return; + } + } + + $uri = $diaspora_handle . ':' . $guid; + + $activity = ACTIVITY_LIKE; + $post_type = (($parent_item['resource-id']) ? t('photo') : t('status')); + $objtype = (($parent_item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE ); + $link = xmlify('' . "\n") ; + $body = $parent_item['body']; + + $obj = <<< EOT + + + $objtype + 1 + {$parent_item['uri']} + $link + + $body + +EOT; + $bodyverb = t('%1$s likes %2$s\'s %3$s'); + + $arr = array(); + + $arr['uri'] = $uri; + $arr['uid'] = $importer['uid']; + $arr['guid'] = $guid; + $arr['network'] = NETWORK_DIASPORA; + $arr['contact-id'] = $contact['id']; + $arr['type'] = 'activity'; + $arr['wall'] = $parent_item['wall']; + $arr['gravity'] = GRAVITY_LIKE; + $arr['parent'] = $parent_item['id']; + $arr['parent-uri'] = $parent_item['uri']; + + $arr['owner-name'] = $parent_item['name']; + $arr['owner-link'] = $parent_item['url']; + //$arr['owner-avatar'] = $parent_item['thumb']; + $arr['owner-avatar'] = ((x($parent_item,'thumb')) ? $parent_item['thumb'] : $parent_item['photo']); + + $arr['author-name'] = $person['name']; + $arr['author-link'] = $person['url']; + $arr['author-avatar'] = ((x($person,'thumb')) ? $person['thumb'] : $person['photo']); + + $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]'; + $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]'; + //$plink = '[url=' . $a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $parent_item['id'] . ']' . $post_type . '[/url]'; + $plink = '[url='.$a->get_baseurl().'/display/'.$guid.']'.$post_type.'[/url]'; + $arr['body'] = sprintf( $bodyverb, $ulink, $alink, $plink ); + + $arr['app'] = 'Diaspora'; + + $arr['private'] = $parent_item['private']; + $arr['verb'] = $activity; + $arr['object-type'] = $objtype; + $arr['object'] = $obj; + $arr['visible'] = 1; + $arr['unseen'] = 1; + $arr['last-child'] = 0; + + $message_id = item_store($arr); + + + //if($message_id) { + // q("update item set plink = '%s' where id = %d", + // //dbesc($a->get_baseurl() . '/display/' . $importer['nickname'] . '/' . $message_id), + // dbesc($a->get_baseurl().'/display/'.$guid), + // intval($message_id) + // ); + //} + + if(! $parent_author_signature) { + q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ", + intval($message_id), + dbesc($signed_data), + dbesc(base64_encode($author_signature)), + dbesc($diaspora_handle) + ); + } + + // if the message isn't already being relayed, notify others + // the existence of parent_author_signature means the parent_author or owner + // is already relaying. The parent_item['origin'] indicates the message was created on our system + + if(($parent_item['origin']) && (! $parent_author_signature)) + proc_run('php','include/notifier.php','comment-import',$message_id); + + return; +} + +function diaspora_retraction($importer,$xml) { + + + $guid = notags(unxmlify($xml->guid)); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + $type = notags(unxmlify($xml->type)); + + $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle); + if(! $contact) + return; + + if($type === 'Person') { + require_once('include/Contact.php'); + contact_remove($contact['id']); + } + elseif($type === 'Post') { + $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1", + dbesc('guid'), + intval($importer['uid']) + ); + if(count($r)) { + if(link_compare($r[0]['author-link'],$contact['url'])) { + q("update item set `deleted` = 1, `changed` = '%s' where `id` = %d", + dbesc(datetime_convert()), + intval($r[0]['id']) + ); + } + } + } + + return 202; + // NOTREACHED +} + +function diaspora_signed_retraction($importer,$xml,$msg) { + + + $guid = notags(unxmlify($xml->target_guid)); + $diaspora_handle = notags(unxmlify($xml->sender_handle)); + $type = notags(unxmlify($xml->target_type)); + $sig = notags(unxmlify($xml->target_author_signature)); + + $parent_author_signature = (($xml->parent_author_signature) ? notags(unxmlify($xml->parent_author_signature)) : ''); + + $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle); + if(! $contact) { + logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['uid']); + return; + } + + + $signed_data = $guid . ';' . $type ; + $key = $msg['key']; + + /* How Diaspora performs relayable_retraction signature checking: + + - If an item has been sent by the item author to the top-level post owner to relay on + to the rest of the contacts on the top-level post, the top-level post owner checks + the author_signature, then creates a parent_author_signature before relaying the item on + - If an item has been relayed on by the top-level post owner, the contacts who receive it + check only the parent_author_signature. Basically, they trust that the top-level post + owner has already verified the authenticity of anything he/she sends out + - In either case, the signature that get checked is the signature created by the person + who sent the salmon + */ + + if($parent_author_signature) { + + $parent_author_signature = base64_decode($parent_author_signature); + + if(! rsa_verify($signed_data,$parent_author_signature,$key,'sha256')) { + logger('diaspora_signed_retraction: top-level post owner verification failed'); + return; + } + + } + else { + + $sig_decode = base64_decode($sig); + + if(! rsa_verify($signed_data,$sig_decode,$key,'sha256')) { + logger('diaspora_signed_retraction: retraction owner verification failed.' . print_r($msg,true)); + return; + } + } + + if($type === 'StatusMessage' || $type === 'Comment' || $type === 'Like') { + $r = q("select * from item where guid = '%s' and uid = %d and not file like '%%[%%' limit 1", + dbesc($guid), + intval($importer['uid']) + ); + if(count($r)) { + if(link_compare($r[0]['author-link'],$contact['url'])) { + q("update item set `deleted` = 1, `edited` = '%s', `changed` = '%s', `body` = '' , `title` = '' where `id` = %d", + dbesc(datetime_convert()), + dbesc(datetime_convert()), + intval($r[0]['id']) + ); + + // Now check if the retraction needs to be relayed by us + // + // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always + // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent. + // The only item with `parent` and `id` as the parent id is the parent item. + $p = q("select origin from item where parent = %d and id = %d limit 1", + $r[0]['parent'], + $r[0]['parent'] + ); + if(count($p)) { + if(($p[0]['origin']) && (! $parent_author_signature)) { + q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ", + $r[0]['id'], + dbesc($signed_data), + dbesc($sig), + dbesc($diaspora_handle) + ); + + // the existence of parent_author_signature would have meant the parent_author or owner + // is already relaying. + logger('diaspora_signed_retraction: relaying relayable_retraction'); + + proc_run('php','include/notifier.php','drop',$r[0]['id']); + } + } + } + } + } + else + logger('diaspora_signed_retraction: unknown type: ' . $type); + + return 202; + // NOTREACHED +} + +function diaspora_profile($importer,$xml,$msg) { + + $a = get_app(); + $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); + + + if($diaspora_handle != $msg['author']) { + logger('diaspora_post: Potential forgery. Message handle is not the same as envelope sender.'); + return 202; + } + + $contact = diaspora_get_contact_by_handle($importer['uid'],$diaspora_handle); + if(! $contact) + return; + + if($contact['blocked']) { + logger('diaspora_post: Ignoring this author.'); + return 202; + } + + $name = unxmlify($xml->first_name) . ((strlen($xml->last_name)) ? ' ' . unxmlify($xml->last_name) : ''); + $image_url = unxmlify($xml->image_url); + $birthday = unxmlify($xml->birthday); + + + $handle_parts = explode("@", $diaspora_handle); + if($name === '') { + $name = $handle_parts[0]; + } + + + if( preg_match("|^https?://|", $image_url) === 0) { + $image_url = "http://" . $handle_parts[1] . $image_url; + } + +/* $r = q("SELECT DISTINCT ( `resource-id` ) FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' ", + intval($importer['uid']), + intval($contact['id']) + ); + $oldphotos = ((count($r)) ? $r : null);*/ + + require_once('include/Photo.php'); + + $images = import_profile_photo($image_url,$importer['uid'],$contact['id']); + + // Generic birthday. We don't know the timezone. The year is irrelevant. + + $birthday = str_replace('1000','1901',$birthday); + + $birthday = datetime_convert('UTC','UTC',$birthday,'Y-m-d'); + + // this is to prevent multiple birthday notifications in a single year + // if we already have a stored birthday and the 'm-d' part hasn't changed, preserve the entry, which will preserve the notify year + + if(substr($birthday,5) === substr($contact['bd'],5)) + $birthday = $contact['bd']; + + // TODO: update name on item['author-name'] if the name changed. See consume_feed() + // Not doing this currently because D* protocol is scheduled for revision soon. + + $r = q("UPDATE `contact` SET `name` = '%s', `name-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s', `avatar-date` = '%s' , `bd` = '%s' WHERE `id` = %d AND `uid` = %d", + dbesc($name), + dbesc(datetime_convert()), + dbesc($images[0]), + dbesc($images[1]), + dbesc($images[2]), + dbesc(datetime_convert()), + dbesc($birthday), + intval($contact['id']), + intval($importer['uid']) + ); + +/* if($r) { + if($oldphotos) { + foreach($oldphotos as $ph) { + q("DELETE FROM `photo` WHERE `uid` = %d AND `contact-id` = %d AND `album` = 'Contact Photos' AND `resource-id` = '%s' ", + intval($importer['uid']), + intval($contact['id']), + dbesc($ph['resource-id']) + ); + } + } + } */ + + return; + +} + +function diaspora_share($me,$contact) { + $a = get_app(); + $myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); + $theiraddr = $contact['addr']; + + $tpl = get_markup_template('diaspora_share.tpl'); + $msg = replace_macros($tpl, array( + '$sender' => $myaddr, + '$recipient' => $theiraddr + )); + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])); + + return(diaspora_transmit($owner,$contact,$slap, false)); +} + +function diaspora_unshare($me,$contact) { + + $a = get_app(); + $myaddr = $me['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); + + $tpl = get_markup_template('diaspora_retract.tpl'); + $msg = replace_macros($tpl, array( + '$guid' => $me['guid'], + '$type' => 'Person', + '$handle' => $myaddr + )); + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey']))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$me,$contact,$me['prvkey'],$contact['pubkey'])); + + return(diaspora_transmit($owner,$contact,$slap, false)); + +} + + +function diaspora_send_status($item,$owner,$contact,$public_batch = false) { + + $a = get_app(); + $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); + $theiraddr = $contact['addr']; + + $images = array(); + + $title = $item['title']; + $body = $item['body']; + +/* + // We're trying to match Diaspora's split message/photo protocol but + // all the photos are displayed on D* as links and not img's - even + // though we're sending pretty much precisely what they send us when + // doing the same operation. + // Commented out for now, we'll use bb2diaspora to convert photos to markdown + // which seems to get through intact. + + $cnt = preg_match_all('|\[img\](.*?)\[\/img\]|',$body,$matches,PREG_SET_ORDER); + if($cnt) { + foreach($matches as $mtch) { + $detail = array(); + $detail['str'] = $mtch[0]; + $detail['path'] = dirname($mtch[1]) . '/'; + $detail['file'] = basename($mtch[1]); + $detail['guid'] = $item['guid']; + $detail['handle'] = $myaddr; + $images[] = $detail; + $body = str_replace($detail['str'],$mtch[1],$body); + } + } +*/ + + //if(strlen($title)) + // $body = "[b]".html_entity_decode($title)."[/b]\n\n".$body; + + // convert to markdown + $body = xmlify(html_entity_decode(bb2diaspora($body))); + //$body = bb2diaspora($body); + + // Adding the title + if(strlen($title)) + $body = "## ".html_entity_decode($title)."\n\n".$body; + + if($item['attach']) { + $cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism',$item['attach'],$matches,PREG_SET_ORDER); + if(cnt) { + $body .= "\n" . t('Attachments:') . "\n"; + foreach($matches as $mtch) { + $body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n"; + } + } + } + + + $public = (($item['private']) ? 'false' : 'true'); + + require_once('include/datetime.php'); + $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C'); + + // Detect a share element and do a reshare + // see: https://github.com/Raven24/diaspora-federation/blob/master/lib/diaspora-federation/entities/reshare.rb + if (!$item['private'] AND ($ret = diaspora_is_reshare($item["body"]))) { + $tpl = get_markup_template('diaspora_reshare.tpl'); + $msg = replace_macros($tpl, array( + '$root_handle' => xmlify($ret['root_handle']), + '$root_guid' => $ret['root_guid'], + '$guid' => $item['guid'], + '$handle' => xmlify($myaddr), + '$public' => $public, + '$created' => $created, + '$provider' => $item["app"] + )); + } else { + $tpl = get_markup_template('diaspora_post.tpl'); + $msg = replace_macros($tpl, array( + '$body' => $body, + '$guid' => $item['guid'], + '$handle' => xmlify($myaddr), + '$public' => $public, + '$created' => $created, + '$provider' => $item["app"] + )); + } + + logger('diaspora_send_status: '.$owner['username'].' -> '.$contact['name'].' base message: '.$msg, LOGGER_DATA); + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)); + + $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch); + + logger('diaspora_send_status: guid: '.$item['guid'].' result '.$return_code, LOGGER_DEBUG); + + if(count($images)) { + diaspora_send_images($item,$owner,$contact,$images,$public_batch); + } + + return $return_code; +} + +function diaspora_is_reshare($body) { + $body = trim($body); + + // Skip if it isn't a pure repeated messages + // Does it start with a share? + if (strpos($body, "[share") > 0) + return(false); + + // Does it end with a share? + if (strlen($body) > (strrpos($body, "[/share]") + 8)) + return(false); + + $attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body); + // Skip if there is no shared message in there + if ($body == $attributes) + return(false); + + $profile = ""; + preg_match("/profile='(.*?)'/ism", $attributes, $matches); + if ($matches[1] != "") + $profile = $matches[1]; + + preg_match('/profile="(.*?)"/ism', $attributes, $matches); + if ($matches[1] != "") + $profile = $matches[1]; + + $ret= array(); + + $ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile); + if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == "")) + return(false); + + $link = ""; + preg_match("/link='(.*?)'/ism", $attributes, $matches); + if ($matches[1] != "") + $link = $matches[1]; + + preg_match('/link="(.*?)"/ism', $attributes, $matches); + if ($matches[1] != "") + $link = $matches[1]; + + $ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link); + if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == "")) + return(false); + + return($ret); +} + +function diaspora_send_images($item,$owner,$contact,$images,$public_batch = false) { + $a = get_app(); + if(! count($images)) + return; + $mysite = substr($a->get_baseurl(),strpos($a->get_baseurl(),'://') + 3) . '/photo'; + + $tpl = get_markup_template('diaspora_photo.tpl'); + foreach($images as $image) { + if(! stristr($image['path'],$mysite)) + continue; + $resource = str_replace('.jpg','',$image['file']); + $resource = substr($resource,0,strpos($resource,'-')); + + $r = q("select * from photo where `resource-id` = '%s' and `uid` = %d limit 1", + dbesc($resource), + intval($owner['uid']) + ); + if(! count($r)) + continue; + $public = (($r[0]['allow_cid'] || $r[0]['allow_gid'] || $r[0]['deny_cid'] || $r[0]['deny_gid']) ? 'false' : 'true' ); + $msg = replace_macros($tpl,array( + '$path' => xmlify($image['path']), + '$filename' => xmlify($image['file']), + '$msg_guid' => xmlify($image['guid']), + '$guid' => xmlify($r[0]['guid']), + '$handle' => xmlify($image['handle']), + '$public' => xmlify($public), + '$created_at' => xmlify(datetime_convert('UTC','UTC',$r[0]['created'],'Y-m-d H:i:s \U\T\C')) + )); + + + logger('diaspora_send_photo: base message: ' . $msg, LOGGER_DATA); + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)); + + diaspora_transmit($owner,$contact,$slap,$public_batch); + } + +} + +function diaspora_send_followup($item,$owner,$contact,$public_batch = false) { + + $a = get_app(); + $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); +// $theiraddr = $contact['addr']; + + // Diaspora doesn't support threaded comments, but some + // versions of Diaspora (i.e. Diaspora-pistos) support + // likes on comments + if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) { + $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1", + dbesc($item['thr-parent']) + ); + } + else { + // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always + // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent. + // The only item with `parent` and `id` as the parent id is the parent item. + $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1", + intval($item['parent']), + intval($item['parent']) + ); + } + if(count($p)) + $parent = $p[0]; + else + return; + + if($item['verb'] === ACTIVITY_LIKE) { + $tpl = get_markup_template('diaspora_like.tpl'); + $like = true; + $target_type = ( $parent['uri'] === $parent['parent-uri'] ? 'Post' : 'Comment'); +// $target_type = (strpos($parent['type'], 'comment') ? 'Comment' : 'Post'); +// $positive = (($item['deleted']) ? 'false' : 'true'); + $positive = 'true'; + + if(($item['deleted'])) + logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction'); + } + else { + $tpl = get_markup_template('diaspora_comment.tpl'); + $like = false; + } + + $text = html_entity_decode(bb2diaspora($item['body'])); + + // sign it + + if($like) + $signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $myaddr; + else + $signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $myaddr; + + $authorsig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')); + + $msg = replace_macros($tpl,array( + '$guid' => xmlify($item['guid']), + '$parent_guid' => xmlify($parent['guid']), + '$target_type' =>xmlify($target_type), + '$authorsig' => xmlify($authorsig), + '$body' => xmlify($text), + '$positive' => xmlify($positive), + '$handle' => xmlify($myaddr) + )); + + logger('diaspora_followup: base message: ' . $msg, LOGGER_DATA); + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)); + + return(diaspora_transmit($owner,$contact,$slap,$public_batch)); +} + + +function diaspora_send_relay($item,$owner,$contact,$public_batch = false) { + + + $a = get_app(); + $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); +// $theiraddr = $contact['addr']; + + $body = $item['body']; + $text = html_entity_decode(bb2diaspora($body)); + + // Diaspora doesn't support threaded comments, but some + // versions of Diaspora (i.e. Diaspora-pistos) support + // likes on comments + if($item['verb'] === ACTIVITY_LIKE && $item['thr-parent']) { + $p = q("select guid, type, uri, `parent-uri` from item where uri = '%s' limit 1", + dbesc($item['thr-parent']) + ); + } + else { + // The first item in the `item` table with the parent id is the parent. However, MySQL doesn't always + // return the items ordered by `item`.`id`, in which case the wrong item is chosen as the parent. + // The only item with `parent` and `id` as the parent id is the parent item. + $p = q("select guid, type, uri, `parent-uri` from item where parent = %d and id = %d limit 1", + intval($item['parent']), + intval($item['parent']) + ); + } + if(count($p)) + $parent = $p[0]; + else + return; + + $like = false; + $relay_retract = false; + $sql_sign_id = 'iid'; + if( $item['deleted']) { + $relay_retract = true; + + $target_type = ( ($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment'); + + $sql_sign_id = 'retract_iid'; + $tpl = get_markup_template('diaspora_relayable_retraction.tpl'); + } + elseif($item['verb'] === ACTIVITY_LIKE) { + $like = true; + + $target_type = ( $parent['uri'] === $parent['parent-uri'] ? 'Post' : 'Comment'); +// $positive = (($item['deleted']) ? 'false' : 'true'); + $positive = 'true'; + + $tpl = get_markup_template('diaspora_like_relay.tpl'); + } + else { // item is a comment + $tpl = get_markup_template('diaspora_comment_relay.tpl'); + } + + + // fetch the original signature if the relayable was created by a Diaspora + // or DFRN user. Relayables for other networks are not supported. + +/* $r = q("select * from sign where " . $sql_sign_id . " = %d limit 1", + intval($item['id']) + ); + if(count($r)) { + $orig_sign = $r[0]; + $signed_text = $orig_sign['signed_text']; + $authorsig = $orig_sign['signature']; + $handle = $orig_sign['signer']; + } + else { + + // Author signature information (for likes, comments, and retractions of likes or comments, + // whether from Diaspora or Friendica) must be placed in the `sign` table before this + // function is called + logger('diaspora_send_relay: original author signature not found, cannot send relayable'); + return; + }*/ + + /* Since the author signature is only checked by the parent, not by the relay recipients, + * I think it may not be necessary for us to do so much work to preserve all the original + * signatures. The important thing that Diaspora DOES need is the original creator's handle. + * Let's just generate that and forget about all the original author signature stuff. + * + * Note: this might be more of an problem if we want to support likes on comments for older + * versions of Diaspora (diaspora-pistos), but since there are a number of problems with + * doing that, let's ignore it for now. + * + * Currently, only DFRN contacts are supported. StatusNet shouldn't be hard, but it hasn't + * been done yet + */ + + $handle = diaspora_handle_from_contact($item['contact-id']); + if(! $handle) + return; + + + if($relay_retract) + $sender_signed_text = $item['guid'] . ';' . $target_type; + elseif($like) + $sender_signed_text = $item['guid'] . ';' . $target_type . ';' . $parent['guid'] . ';' . $positive . ';' . $handle; + else + $sender_signed_text = $item['guid'] . ';' . $parent['guid'] . ';' . $text . ';' . $handle; + + // Sign the relayable with the top-level owner's signature + // + // We'll use the $sender_signed_text that we just created, instead of the $signed_text + // stored in the database, because that provides the best chance that Diaspora will + // be able to reconstruct the signed text the same way we did. This is particularly a + // concern for the comment, whose signed text includes the text of the comment. The + // smallest change in the text of the comment, including removing whitespace, will + // make the signature verification fail. Since we translate from BB code to Diaspora's + // markup at the top of this function, which is AFTER we placed the original $signed_text + // in the database, it's hazardous to trust the original $signed_text. + + $parentauthorsig = base64_encode(rsa_sign($sender_signed_text,$owner['uprvkey'],'sha256')); + + $msg = replace_macros($tpl,array( + '$guid' => xmlify($item['guid']), + '$parent_guid' => xmlify($parent['guid']), + '$target_type' =>xmlify($target_type), + '$authorsig' => xmlify($authorsig), + '$parentsig' => xmlify($parentauthorsig), + '$body' => xmlify($text), + '$positive' => xmlify($positive), + '$handle' => xmlify($handle) + )); + + logger('diaspora_send_relay: base message: ' . $msg, LOGGER_DATA); + + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)); + + return(diaspora_transmit($owner,$contact,$slap,$public_batch)); + +} + + + +function diaspora_send_retraction($item,$owner,$contact,$public_batch = false) { + + $a = get_app(); + $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); + + // Check whether the retraction is for a top-level post or whether it's a relayable + if( $item['uri'] !== $item['parent-uri'] ) { + + $tpl = get_markup_template('diaspora_relay_retraction.tpl'); + $target_type = (($item['verb'] === ACTIVITY_LIKE) ? 'Like' : 'Comment'); + } + else { + + $tpl = get_markup_template('diaspora_signed_retract.tpl'); + $target_type = 'StatusMessage'; + } + + $signed_text = $item['guid'] . ';' . $target_type; + + $msg = replace_macros($tpl, array( + '$guid' => xmlify($item['guid']), + '$type' => xmlify($target_type), + '$handle' => xmlify($myaddr), + '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256'))) + )); + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],$public_batch)); + + return(diaspora_transmit($owner,$contact,$slap,$public_batch)); +} + +function diaspora_send_mail($item,$owner,$contact) { + + $a = get_app(); + $myaddr = $owner['nickname'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); + + $r = q("select * from conv where id = %d and uid = %d limit 1", + intval($item['convid']), + intval($item['uid']) + ); + + if(! count($r)) { + logger('diaspora_send_mail: conversation not found.'); + return; + } + $cnv = $r[0]; + + $conv = array( + 'guid' => xmlify($cnv['guid']), + 'subject' => xmlify($cnv['subject']), + 'created_at' => xmlify(datetime_convert('UTC','UTC',$cnv['created'],'Y-m-d H:i:s \U\T\C')), + 'diaspora_handle' => xmlify($cnv['creator']), + 'participant_handles' => xmlify($cnv['recips']) + ); + + $body = bb2diaspora($item['body']); + $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C'); + + $signed_text = $item['guid'] . ';' . $cnv['guid'] . ';' . $body . ';' + . $created . ';' . $myaddr . ';' . $cnv['guid']; + + $sig = base64_encode(rsa_sign($signed_text,$owner['uprvkey'],'sha256')); + + $msg = array( + 'guid' => xmlify($item['guid']), + 'parent_guid' => xmlify($cnv['guid']), + 'parent_author_signature' => (($item['reply']) ? null : xmlify($sig)), + 'author_signature' => xmlify($sig), + 'text' => xmlify($body), + 'created_at' => xmlify($created), + 'diaspora_handle' => xmlify($myaddr), + 'conversation_guid' => xmlify($cnv['guid']) + ); + + if($item['reply']) { + $tpl = get_markup_template('diaspora_message.tpl'); + $xmsg = replace_macros($tpl, array('$msg' => $msg)); + } + else { + $conv['messages'] = array($msg); + $tpl = get_markup_template('diaspora_conversation.tpl'); + $xmsg = replace_macros($tpl, array('$conv' => $conv)); + } + + logger('diaspora_conversation: ' . print_r($xmsg,true), LOGGER_DATA); + + $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false))); + //$slap = 'xml=' . urlencode(diaspora_msg_build($xmsg,$owner,$contact,$owner['uprvkey'],$contact['pubkey'],false)); + + return(diaspora_transmit($owner,$contact,$slap,false)); + + +} + +function diaspora_transmit($owner,$contact,$slap,$public_batch,$queue_run=false) { + + $enabled = intval(get_config('system','diaspora_enabled')); + if(! $enabled) { + return 200; + } + + $a = get_app(); + $logid = random_string(4); + $dest_url = (($public_batch) ? $contact['batch'] : $contact['notify']); + if(! $dest_url) { + logger('diaspora_transmit: no url for contact: ' . $contact['id'] . ' batch mode =' . $public_batch); + return 0; + } + + logger('diaspora_transmit: ' . $logid . ' ' . $dest_url); + + if( (! $queue_run) && (was_recently_delayed($contact['id'])) ) { + $return_code = 0; + } + else { + if (!intval(get_config('system','diaspora_test'))) { + post_url($dest_url . '/', $slap); + $return_code = $a->get_curl_code(); + } else { + logger('diaspora_transmit: test_mode'); + return 200; + } + } + + logger('diaspora_transmit: ' . $logid . ' returns: ' . $return_code); + + if((! $return_code) || (($return_code == 503) && (stristr($a->get_curl_headers(),'retry-after')))) { + logger('diaspora_transmit: queue message'); + + $r = q("SELECT id from queue where cid = %d and network = '%s' and content = '%s' and batch = %d limit 1", + intval($contact['id']), + dbesc(NETWORK_DIASPORA), + dbesc($slap), + intval($public_batch) + ); + if(count($r)) { + logger('diaspora_transmit: add_to_queue ignored - identical item already in queue'); + } + else { + // queue message for redelivery + add_to_queue($contact['id'],NETWORK_DIASPORA,$slap,$public_batch); + } + } + + + return(($return_code) ? $return_code : (-1)); +} + + -- cgit v1.2.3