<?php require_once('include/crypto.php'); require_once('include/items.php'); require_once('include/bb2diaspora.php'); require_once('include/contact_selectors.php'); //require_once('include/queue_fn.php'); //require_once('include/lock.php'); function diaspora_dispatch_public($msg) { $enabled = intval(get_config('system','diaspora_enabled')); if(! $enabled) { logger('mod-diaspora: disabled'); return; } $sys_disabled = true; if(! get_config('system','disable_discover_tab')) { $sys_disabled = get_config('system','disable_diaspora_discover_tab'); } $sys = (($sys_disabled) ? null : get_sys_channel()); // find everybody following or allowing this author $r = q("SELECT * from channel where channel_id in ( SELECT abook_channel from abook left join xchan on abook_xchan = xchan_hash WHERE xchan_network like '%%diaspora%%' and xchan_addr = '%s' ) and ( channel_pageflags & %d ) = 0 ", dbesc($msg['author']), intval(PAGE_REMOVED) ); // also need to look for those following public streams if($r) { foreach($r as $rr) { logger('diaspora_public: delivering to: ' . $rr['channel_name'] . ' (' . $rr['channel_address'] . ') '); diaspora_dispatch($rr,$msg); } } else { if(! $sys) logger('diaspora_public: no subscribers'); } if($sys) { $sys['system'] = true; logger('diaspora_public: delivering to sys.'); diaspora_dispatch($sys,$msg); } } function diaspora_dispatch($importer,$msg) { $ret = 0; if(! array_key_exists('system',$importer)) $importer['system'] = false; $enabled = intval(get_config('system','diaspora_enabled')); if(! $enabled) { logger('mod-diaspora: disabled'); return; } $allowed = get_pconfig($importer['channel_id'],'system','diaspora_allowed'); if($allowed === false) $allowed = 1; if(! intval($allowed)) { logger('mod-diaspora: disallowed for channel ' . $importer['channel_name']); return; } // php doesn't like dashes in variable names $msg['message'] = str_replace( array('<activity_streams-photo>','</activity_streams-photo>'), array('<asphoto>','</asphoto>'), $msg['message']); $parsed_xml = parse_xml_string($msg['message'],false); $xmlbase = $parsed_xml->post; // logger('diaspora_dispatch: ' . print_r($xmlbase,true), LOGGER_DATA); 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); } 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 $ret; } function diaspora_is_blacklisted($s) { $bl1 = get_config('system','blacklisted_sites'); if(is_array($bl1) && $bl1) { foreach($bl1 as $bl) { if($bl && strpos($s,$bl) !== false) { logger('diaspora_is_blacklisted: blacklisted ' . $s); return true; } } } return false; } function diaspora_process_outbound($arr) { /* We are passed the following array from the notifier, providing everything we need to make delivery decisions. diaspora_process_outbound(array( 'channel' => $channel, 'env_recips' => $env_recips, 'recipients' => $recipients, 'item' => $item, 'target_item' => $target_item, 'hub' => $hub, 'top_level_post' => $top_level_post, 'private' => $private, 'followup' => $followup, 'relay_to_owner' => $relay_to_owner, 'uplink' => $uplink, 'cmd' => $cmd, 'expire' => $expire, 'mail' => $mail, 'location' => $location, 'fsuggest' => $fsuggest, 'normal_mode' => $normal_mode, 'packet_type' => $packet_type, 'walltowall' => $walltowall, )); */ $allowed = get_pconfig($arr['channel']['channel_id'],'system','diaspora_allowed'); if($allowed === false) $allowed = 1; if(! intval($allowed)) { logger('mod-diaspora: disallowed for channel ' . $arr['channel']['channel_name']); return; } if($arr['location']) return; $target_item = $arr['target_item']; if($target_item && array_key_exists('item_flags',$target_item) && ($target_item['item_flags'] & ITEM_OBSCURED)) { $key = get_config('system','prvkey'); if($target_item['title']) $target_item['title'] = crypto_unencapsulate(json_decode($target_item['title'],true),$key); if($target_item['body']) $target_item['body'] = crypto_unencapsulate(json_decode($target_item['body'],true),$key); } if($arr['env_recips']) { $hashes = array(); // re-explode the recipients, but only for this hub/pod foreach($arr['env_recips'] as $recip) $hashes[] = "'" . $recip['hash'] . "'"; $r = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_url = '%s' and xchan_hash in (" . implode(',', $hashes) . ") and xchan_network in ('diaspora', 'friendica-over-diaspora') ", dbesc($arr['hub']['hubloc_url']) ); if(! $r) { logger('diaspora_process_outbound: no recipients'); return; } foreach($r as $contact) { if($arr['mail']) { diaspora_send_mail($arr['item'],$arr['channel'],$contact); continue; } if(! $arr['normal_mode']) continue; // special handling for followup to public post // all other public posts processed as public batches further below if((! $arr['private']) && ($arr['followup'])) { diaspora_send_followup($target_item,$arr['channel'],$contact, true); continue; } if(! $contact['xchan_pubkey']) continue; if(($target_item['item_restrict'] & ITEM_DELETED) && (($target_item['mid'] === $target_item['parent_mid']) || $arr['followup'])) { // send both top-level retractions and relayable retractions for owner to relay diaspora_send_retraction($target_item,$arr['channel'],$contact); continue; } elseif($arr['followup']) { // send comments and likes to owner to relay diaspora_send_followup($target_item,$arr['channel'],$contact); continue; } elseif($target_item['mid'] !== $target_item['parent_mid']) { // we are the relay - send comments, likes and relayable_retractions // (of comments and likes) to our conversants diaspora_send_relay($target_item,$arr['channel'],$contact); continue; } elseif($arr['top_level_post']) { diaspora_send_status($target_item,$arr['channel'],$contact); continue; } } } else { // public message $contact = $arr['hub']; if(($target_item['deleted']) && ($target_item['mid'] === $target_item['parent_mod'])) { // top-level retraction logger('delivery: diaspora retract: ' . $loc); diaspora_send_retraction($target_item,$arr['channel'],$contact,true); return; } elseif($target_item['mid'] !== $target_item['parent_mid']) { // we are the relay - send comments, likes and relayable_retractions to our conversants logger('delivery: diaspora relay: ' . $loc); diaspora_send_relay($target_item,$arr['channel'],$contact,true); return; } elseif($arr['top_level_post']) { logger('delivery: diaspora status: ' . $loc); diaspora_send_status($target_item,$arr['channel'],$contact,true); return; } } } function diaspora_handle_from_contact($contact_hash) { logger("diaspora_handle_from_contact: contact id is " . $contact_hash, LOGGER_DEBUG); $r = q("SELECT xchan_addr from xchan where xchan_hash = '%s' limit 1", dbesc($contact_hash) ); if($r) { return $r[0]['xchan_addr']; } return false; } function diaspora_get_contact_by_handle($uid,$handle) { if(diaspora_is_blacklisted($handle)) return false; require_once('include/identity.php'); $sys = get_sys_channel(); if(($sys) && ($sys['channel_id'] == $uid)) { $r = q("SELECT * FROM xchan where xchan_addr = '%s' limit 1", dbesc($handle) ); } else { $r = q("SELECT * FROM abook left join xchan on xchan_hash = abook_xchan where xchan_addr = '%s' and abook_channel = %d limit 1", dbesc($handle), intval($uid) ); } return (($r) ? $r[0] : false); } function find_diaspora_person_by_handle($handle) { $person = false; if(diaspora_is_blacklisted($handle)) return false; $r = q("select * from xchan where xchan_addr = '%s' limit 1", dbesc($handle) ); if($r) { $person = $r[0]; logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DATA); } if(! $person) { // try webfinger. Make sure to distinguish between diaspora, // redmatrix w/diaspora protocol and friendica w/diaspora protocol. $result = discover_by_webbie($handle); if($result) { $r = q("select * from xchan where xchan_addr = '%s' limit 1", dbesc($handle) ); if($r) { $person = $r[0]; logger('find_diaspora_person_by handle: discovered ' . print_r($r,true), LOGGER_DATA); } } } return $person; } function get_diaspora_key($handle) { logger('Fetching diaspora key for: ' . $handle, LOGGER_DEBUG); $r = find_diaspora_person_by_handle($handle); return(($r) ? $r['xchan_pubkey'] : ''); } function diaspora_pubmsg_build($msg,$channel,$contact,$prvkey,$pubkey) { $a = get_app(); logger('diaspora_pubmsg_build: ' . $msg, LOGGER_DATA); $handle = $channel['channel_address'] . '@' . get_app()->get_hostname(); $b64url_data = base64url_encode($msg,false); $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data); $type = 'application/xml'; $encoding = 'base64url'; $alg = 'RSA-SHA256'; $signable_data = $data . '.' . base64url_encode($type,false) . '.' . base64url_encode($encoding,false) . '.' . base64url_encode($alg,false) ; $signature = rsa_sign($signable_data,$prvkey); $sig = base64url_encode($signature,false); $magic_env = <<< EOT <?xml version='1.0' encoding='UTF-8'?> <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" > <header> <author_id>$handle</author_id> </header> <me:env> <me:encoding>base64url</me:encoding> <me:alg>RSA-SHA256</me:alg> <me:data type="application/xml">$data</me:data> <me:sig>$sig</me:sig> </me:env> </diaspora> EOT; logger('diaspora_pubmsg_build: magic_env: ' . $magic_env, LOGGER_DATA); return $magic_env; } function diaspora_msg_build($msg,$channel,$contact,$prvkey,$pubkey,$public = false) { $a = get_app(); if($public) return diaspora_pubmsg_build($msg,$channel,$contact,$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 = $channel['channel_address'] . '@' . get_app()->get_hostname(); $padded_data = pkcs5_pad($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,false); $data = str_replace(array("\n","\r"," ","\t"),array('','','',''),$b64url_data); $type = 'application/xml'; $encoding = 'base64url'; $alg = 'RSA-SHA256'; $signable_data = $data . '.' . base64url_encode($type,false) . '.' . base64url_encode($encoding,false) . '.' . base64url_encode($alg,false) ; logger('diaspora_msg_build: signable_data: ' . $signable_data, LOGGER_DATA); $signature = rsa_sign($signable_data,$prvkey); $sig = base64url_encode($signature,false); $decrypted_header = <<< EOT <decrypted_header> <iv>$b_inner_iv</iv> <aes_key>$b_inner_aes_key</aes_key> <author_id>$handle</author_id> </decrypted_header> 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 = '<encrypted_header>' . $cipher_json . '</encrypted_header>'; $magic_env = <<< EOT <?xml version='1.0' encoding='UTF-8'?> <diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" > $encrypted_header <me:env> <me:encoding>base64url</me:encoding> <me:alg>RSA-SHA256</me:alg> <me:data type="application/xml">$data</me:data> <me:sig>$sig</me:sig> </me:env> </diaspora> 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['channel_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 * * <decrypted_header> * <iv>8e+G2+ET8l5BPuW0sVTnQw==</iv> * <aes_key>UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=</aes_key> ***** OBSOLETE * <author> * <name>Ryan Hughes</name> * <uri>acct:galaxor@diaspora.pirateship.org</uri> * </author> ***** CURRENT * <author_id>galaxor@diaspora.priateship.org</author_id> ***** END DIFFS * </decrypted_header> */ logger('decrypted: ' . $decrypted, LOGGER_DATA); $idom = parse_xml_string($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,false) . '.' . base64url_encode($encoding,false) . '.' . base64url_encode($alg,false); // 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' => $key); } /* sender is now sharing with recipient */ function diaspora_request($importer,$xml) { $a = get_app(); $sender_handle = unxmlify($xml->sender_handle); $recipient_handle = unxmlify($xml->recipient_handle); if(! $sender_handle || ! $recipient_handle) return; // Do we already have an abook record? $contact = diaspora_get_contact_by_handle($importer['channel_id'],$sender_handle); if($contact && $contact['abook_id']) { // perhaps we were already sharing with this person. Now they're sharing with us. // That makes us friends. Maybe. // Please note some of these permissions such as PERMS_R_PAGES are impossible for Disapora. // They cannot authenticate to our system. $newperms = PERMS_R_STREAM|PERMS_R_PROFILE|PERMS_R_PHOTOS|PERMS_R_ABOOK|PERMS_W_STREAM|PERMS_W_COMMENT|PERMS_W_MAIL|PERMS_W_CHAT|PERMS_R_STORAGE|PERMS_R_PAGES; $r = q("update abook set abook_their_perms = %d where abook_id = %d and abook_channel = %d", intval($newperms), intval($contact['abook_id']), intval($importer['channel_id']) ); return; } $ret = find_diaspora_person_by_handle($sender_handle); if((! $ret) || (! strstr($ret['xchan_network'],'diaspora'))) { logger('diaspora_request: Cannot resolve diaspora handle ' . $sender_handle . ' for ' . $recipient_handle); return; } //FIXME /* if(feature_enabled($channel['channel_id'],'premium_channel')) { $myaddr = $importer['channel_address'] . '@' . get_app()->get_hostname(); $cnv = random_string(); $mid = random_string(); $msg = t('You have started sharing with a $Projectname premium channel.'); $msg .= t('$Projectname premium channels are not available for sharing with Diaspora members. This sharing request has been blocked.') . "\r"; $msg .= t('Please do not reply to this message, as this channel is not sharing with you and any reply will not be seen by the recipient.') . "\r"; $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C'); $signed_text = $mid . ';' . $cnv . ';' . $msg . ';' . $created . ';' . $myaddr . ';' . $cnv; $sig = base64_encode(rsa_sign($signed_text,$importer['channel_prvkey'],'sha256')); $conv = array( 'guid' => xmlify($cnv), 'subject' => xmlify(t('Sharing request failed.')), 'created_at' => xmlify($created), 'diaspora_handle' => xmlify($myaddr), 'participant_handles' => xmlify($myaddr . ';' . $sender_handle) ); $msg = array( 'guid' => xmlify($mid), 'parent_guid' => xmlify($cnv), 'parent_author_signature' => xmlify($sig), 'author_signature' => xmlify($sig), 'text' => xmlify($msg), 'created_at' => xmlify($created), 'diaspora_handle' => xmlify($myaddr), 'conversation_guid' => xmlify($cnv) ); $conv['messages'] = array($msg); $tpl = get_markup_template('diaspora_conversation.tpl'); $xmsg = replace_macros($tpl, array('$conv' => $conv)); $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($xmsg,$importer,$ret,$importer['channel_prvkey'],$ret['xchan_pubkey'],false))); diaspora_transmit($importer,$ret,$slap,false); return; } */ // End FIXME $role = get_pconfig($channel['channel_id'],'system','permissions_role'); if($role) { $x = get_role_perms($role); if($x['perms_auto']) $default_perms = $x['perms_accept']; } if(! $default_perms) $default_perms = intval(get_pconfig($importer['channel_id'],'system','autoperms')); $their_perms = PERMS_R_STREAM|PERMS_R_PROFILE|PERMS_R_PHOTOS|PERMS_R_ABOOK|PERMS_W_STREAM|PERMS_W_COMMENT|PERMS_W_MAIL|PERMS_W_CHAT|PERMS_R_STORAGE|PERMS_R_PAGES; $closeness = get_pconfig($importer['channel_id'],'system','new_abook_closeness'); if($closeness === false) $closeness = 80; $r = q("insert into abook ( abook_account, abook_channel, abook_xchan, abook_my_perms, abook_their_perms, abook_closeness, abook_rating, abook_created, abook_updated, abook_connected, abook_dob, abook_flags) values ( %d, %d, '%s', %d, %d, %d, %d, '%s', '%s', '%s', '%s', %d )", intval($importer['channel_account_id']), intval($importer['channel_id']), dbesc($ret['xchan_hash']), intval($default_perms), intval($their_perms), intval($closeness), intval(0), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc(NULL_DATE), intval(($default_perms) ? 0 : ABOOK_FLAG_PENDING) ); if($r) { logger("New Diaspora introduction received for {$importer['channel_name']}"); $new_connection = q("select * from abook left join xchan on abook_xchan = xchan_hash left join hubloc on hubloc_hash = xchan_hash where abook_channel = %d and abook_xchan = '%s' order by abook_created desc limit 1", intval($importer['channel_id']), dbesc($ret['xchan_hash']) ); if($new_connection) { require_once('include/enotify.php'); notification(array( 'type' => NOTIFY_INTRO, 'from_xchan' => $ret['xchan_hash'], 'to_xchan' => $importer['channel_hash'], 'link' => z_root() . '/connedit/' . $new_connection[0]['abook_id'], )); if($default_perms) { // Send back a sharing notification to them diaspora_share($importer,$new_connection[0]); } $clone = array(); foreach($new_connection[0] as $k => $v) { if(strpos($k,'abook_') === 0) { $clone[$k] = $v; } } unset($clone['abook_id']); unset($clone['abook_account']); unset($clone['abook_channel']); build_sync_packet($importer['channel_id'], array('abook' => array($clone))); } } // find the abook record we just created $contact_record = diaspora_get_contact_by_handle($importer['channel_id'],$sender_handle); if(! $contact_record) { logger('diaspora_request: unable to locate newly created contact record.'); return; } /** If there is a default group for this channel, add this member to it */ if($importer['channel_default_group']) { require_once('include/group.php'); $g = group_rec_byhash($importer['channel_id'],$importer['channel_default_group']); if($g) group_add_member($importer['channel_id'],'',$contact_record['xchan_hash'],$g['id']); } return; } function diaspora_post($importer,$xml,$msg) { $a = get_app(); $guid = notags(unxmlify($xml->guid)); $diaspora_handle = notags(unxmlify($xml->diaspora_handle)); $app = notags(xmlify($xml->provider_display_name)); 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['channel_id'],$diaspora_handle); if(! $contact) return; if(! $app) { if(strstr($contact['xchan_network'],'friendica')) $app = 'Friendica'; else $app = 'Diaspora'; } $search_guid = ((strlen($guid) == 64) ? $guid . '%' : $guid); $r = q("SELECT id FROM item WHERE uid = %d AND mid like '%s' LIMIT 1", intval($importer['channel_id']), dbesc($search_guid) ); if($r) { // check dates if post editing is implemented logger('diaspora_post: message exists: ' . $guid); return; } $created = unxmlify($xml->created_at); $private = ((unxmlify($xml->public) == 'false') ? 1 : 0); $body = diaspora2bb($xml->raw_message); if($xml->photo) { $body = '[img]' . $xml->photo->remote_photo_path . $xml->photo->remote_photo_name . '[/img]' . "\n\n" . $body; $body = scale_external_images($body); } $maxlen = get_max_import_size(); if($maxlen && mb_strlen($body) > $maxlen) { $body = mb_substr($body,0,$maxlen,'UTF-8'); logger('message length exceeds max_import_size: truncated'); } //WTF? FIXME // Add OEmbed and other information to the body // $body = add_page_info_to_body($body, false, true); $datarray = array(); // Look for tags and linkify them $results = linkify_tags(get_app(), $body, $importer['channel_id'], true); $datarray['term'] = array(); if($results) { foreach($results as $result) { $success = $result['success']; if($success['replaced']) { $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => $success['termtype'], 'otype' => TERM_OBJ_POST, 'term' => $success['term'], 'url' => $success['url'] ); } } } $cnt = preg_match_all('/@\[url=(.*?)\](.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER); if($cnt) { foreach($matches as $mtch) { $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => TERM_MENTION, 'otype' => TERM_OBJ_POST, 'term' => $mtch[2], 'url' => $mtch[1] ); } } $cnt = preg_match_all('/@\[zrl=(.*?)\](.*?)\[\/zrl\]/ism',$body,$matches,PREG_SET_ORDER); if($cnt) { foreach($matches as $mtch) { // don't include plustags in the term $term = ((substr($mtch[2],-1,1) === '+') ? substr($mtch[2],0,-1) : $mtch[2]); $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => TERM_MENTION, 'otype' => TERM_OBJ_POST, 'term' => $term, 'url' => $mtch[1] ); } } $plink = service_plink($contact,$guid); $datarray['uid'] = $importer['channel_id']; $datarray['verb'] = ACTIVITY_POST; $datarray['mid'] = $datarray['parent_mid'] = $guid; $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created); $datarray['item_private'] = $private; $datarray['plink'] = $plink; $datarray['author_xchan'] = $contact['xchan_hash']; $datarray['owner_xchan'] = $contact['xchan_hash']; $datarray['body'] = $body; $datarray['app'] = $app; $datarray['item_flags'] = ITEM_THREAD_TOP; $datarray['item_unseen'] = 1; $tgroup = tgroup_check($importer['channel_id'],$datarray); if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream')) && (! $tgroup)) { logger('diaspora_post: Ignoring this author.'); return 202; } if(! post_is_importable($datarray,$contact)) { logger('diaspora_post: filtering this author.'); return 202; } $result = item_store($datarray); return; } function get_diaspora_reshare_xml($url,$recurse = 0) { $x = z_fetch_url($url); if(! $x['success']) $x = z_fetch_url(str_replace('https://','http://',$url)); if(! $x['success']) { logger('get_diaspora_reshare_xml: unable to fetch source url ' . $url); return; } logger('get_diaspora_reshare_xml: source: ' . $x['body'], LOGGER_DEBUG); $source_xml = parse_xml_string($x['body'],false); if(! $source_xml) { logger('get_diaspora_reshare_xml: unparseable result from ' . $url); return ''; } if($source_xml->post->status_message) { return $source_xml; } // see if it's a reshare of a reshare if($source_xml->post->reshare) $xml = $source_xml->post->reshare; else return false; if($xml->root_diaspora_id && $xml->root_guid && $recurse < 15) { $orig_author = notags(unxmlify($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'; $y = get_diaspora_reshare_xml($source_url,$recurse+1); if($y) return $y; } return false; } function diaspora_reshare($importer,$xml,$msg) { logger('diaspora_reshare: init: ' . print_r($xml,true), LOGGER_DATA); $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['channel_id'],$diaspora_handle); if(! $contact) return; $search_guid = ((strlen($guid) == 64) ? $guid . '%' : $guid); $r = q("SELECT id FROM item WHERE uid = %d AND mid like '%s' LIMIT 1", intval($importer['channel_id']), dbesc($search_guid) ); if($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; $source_xml = get_diaspora_reshare_xml($source_url); if($source_xml->post->status_message) { $body = diaspora2bb($source_xml->post->status_message->raw_message); $orig_author = notags(unxmlify($source_xml->post->status_message->diaspora_handle)); $orig_guid = notags(unxmlify($source_xml->post->status_message->guid)); // Checking for embedded pictures if($source_xml->post->status_message->photo->remote_photo_path && $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; } $maxlen = get_max_import_size(); if($maxlen && mb_strlen($body) > $maxlen) { $body = mb_substr($body,0,$maxlen,'UTF-8'); logger('message length exceeds max_import_size: truncated'); } $person = find_diaspora_person_by_handle($orig_author); if($person) { $orig_author_name = $person['xchan_name']; $orig_author_link = $person['xchan_url']; $orig_author_photo = $person['xchan_photo_m']; } $created = unxmlify($xml->created_at); $private = ((unxmlify($xml->public) == 'false') ? 1 : 0); $datarray = array(); // Look for tags and linkify them $results = linkify_tags(get_app(), $body, $importer['channel_id'], true); $datarray['term'] = array(); if($results) { foreach($results as $result) { $success = $result['success']; if($success['replaced']) { $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => $success['termtype'], 'otype' => TERM_OBJ_POST, 'term' => $success['term'], 'url' => $success['url'] ); } } } $cnt = preg_match_all('/@\[url=(.*?)\](.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER); if($cnt) { foreach($matches as $mtch) { $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => TERM_MENTION, 'otype' => TERM_OBJ_POST, 'term' => $mtch[2], 'url' => $mtch[1] ); } } $cnt = preg_match_all('/@\[zrl=(.*?)\](.*?)\[\/zrl\]/ism',$body,$matches,PREG_SET_ORDER); if($cnt) { foreach($matches as $mtch) { // don't include plustags in the term $term = ((substr($mtch[2],-1,1) === '+') ? substr($mtch[2],0,-1) : $mtch[2]); $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => TERM_MENTION, 'otype' => TERM_OBJ_POST, 'term' => $term, 'url' => $mtch[1] ); } } $newbody = "[share author='" . urlencode($orig_author_name) . "' profile='" . $orig_author_link . "' avatar='" . $orig_author_photo . "' link='" . $orig_url . "' posted='" . datetime_convert('UTC','UTC',unxmlify($source_xml->post->status_message->created_at)) . "' message_id='" . unxmlify($source_xml->post->status_message->guid) . "']" . $body . "[/share]"; $plink = service_plink($contact,$guid); $datarray['uid'] = $importer['channel_id']; $datarray['mid'] = $datarray['parent_mid'] = $guid; $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert('UTC','UTC',$created); $datarray['item_private'] = $private; $datarray['plink'] = $plink; $datarray['owner_xchan'] = $contact['xchan_hash']; $datarray['author_xchan'] = $contact['xchan_hash']; $datarray['body'] = $newbody; $datarray['app'] = 'Diaspora'; $tgroup = tgroup_check($importer['channel_id'],$datarray); if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream')) && (! $tgroup)) { logger('diaspora_post: Ignoring this author.'); return 202; } $result = item_store($datarray); 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['channel_id'],$diaspora_handle); if(! $contact) return; if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream'))) { 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['channel_id']), 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; } $plink = service_plink($contact,$guid); $datarray = array(); $datarray['uid'] = $importer['channel_id']; $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['channel_id'],$msg['author']); if(! $contact) { logger('diaspora_comment: cannot find contact: ' . $msg['author']); return; } $pubcomment = get_pconfig($importer['channel_id'],'system','diaspora_public_comments'); // by default comments on public posts are allowed from anybody on Diaspora. That is their policy. // Once this setting is set to something we'll track your preference and it will over-ride the default. if($pubcomment === false) $pubcomment = 1; // Friendica is currently truncating guids at 64 chars $search_guid = $parent_guid; if(strlen($parent_guid) == 64) $search_guid = $parent_guid . '%'; $r = q("SELECT * FROM item WHERE uid = %d AND mid LIKE '%s' LIMIT 1", intval($importer['channel_id']), dbesc($search_guid) ); if(! $r) { logger('diaspora_comment: parent item not found: parent: ' . $parent_guid . ' item: ' . $guid); return; } $parent_item = $r[0]; if(intval($parent_item['item_private'])) $pubcomment = 0; $search_guid = $guid; if(strlen($guid) == 64) $search_guid = $guid . '%'; $r = q("SELECT * FROM item WHERE uid = %d AND mid like '%s' LIMIT 1", intval($importer['channel_id']), dbesc($search_guid) ); if($r) { logger('diaspora_comment: our comment just got relayed back to us (or there was a guid collision) : ' . $guid); return; } /* 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 psuedo-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 $msg['key'] if($importer['system']) { // don't relay to the sys channel logger('diaspora_comment: relay to sys channel blocked.'); return; } $author_signature = base64_decode($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); $maxlen = get_max_import_size(); if($maxlen && mb_strlen($body) > $maxlen) { $body = mb_substr($body,0,$maxlen,'UTF-8'); logger('message length exceeds max_import_size: truncated'); } $datarray = array(); // Look for tags and linkify them $results = linkify_tags(get_app(), $body, $importer['channel_id'], true); $datarray['term'] = array(); if($results) { foreach($results as $result) { $success = $result['success']; if($success['replaced']) { $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => $success['termtype'], 'otype' => TERM_OBJ_POST, 'term' => $success['term'], 'url' => $success['url'] ); } } } $cnt = preg_match_all('/@\[url=(.*?)\](.*?)\[\/url\]/ism',$body,$matches,PREG_SET_ORDER); if($cnt) { foreach($matches as $mtch) { $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => TERM_MENTION, 'otype' => TERM_OBJ_POST, 'term' => $mtch[2], 'url' => $mtch[1] ); } } $cnt = preg_match_all('/@\[zrl=(.*?)\](.*?)\[\/zrl\]/ism',$body,$matches,PREG_SET_ORDER); if($cnt) { foreach($matches as $mtch) { // don't include plustags in the term $term = ((substr($mtch[2],-1,1) === '+') ? substr($mtch[2],0,-1) : $mtch[2]); $datarray['term'][] = array( 'uid' => $importer['channel_id'], 'type' => TERM_MENTION, 'otype' => TERM_OBJ_POST, 'term' => $term, 'url' => $mtch[1] ); } } $datarray['uid'] = $importer['channel_id']; $datarray['verb'] = ACTIVITY_POST; $datarray['mid'] = $guid; $datarray['parent_mid'] = $parent_item['mid']; // set the route to that of the parent so downstream hubs won't reject it. $datarray['route'] = $parent_item['route']; // No timestamps for comments? OK, we'll the use current time. $datarray['changed'] = $datarray['created'] = $datarray['edited'] = datetime_convert(); $datarray['item_private'] = $parent_item['item_private']; $datarray['owner_xchan'] = $parent_item['owner_xchan']; $datarray['author_xchan'] = $person['xchan_hash']; $datarray['body'] = $body; if(strstr($person['xchan_network'],'friendica')) $app = 'Friendica'; else $app = 'Diaspora'; $datarray['app'] = $app; if(! $parent_author_signature) { $key = get_config('system','pubkey'); $x = array('signer' => $diaspora_handle, 'body' => $text, 'signed_text' => $signed_data, 'signature' => base64_encode($author_signature)); $datarray['diaspora_meta'] = json_encode(crypto_encapsulate(json_encode($x),$key)); } // So basically if something arrives at the sys channel it's by definition public and we allow it. // If $pubcomment and the parent was public, we allow it. // In all other cases, honour the permissions for this Diaspora connection $tgroup = tgroup_check($importer['channel_id'],$datarray); if((! $importer['system']) && (! $pubcomment) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'post_comments')) && (! $tgroup)) { logger('diaspora_comment: Ignoring this author.'); return 202; } $result = item_store($datarray); if($result && $result['success']) $message_id = $result['item_id']; if(($parent_item['item_flags'] & ITEM_ORIGIN) && (! $parent_author_signature)) { // if the message isn't already being relayed, notify others // the existence of parent_author_signature means the parent_author or owner // is already relaying. proc_run('php','include/notifier.php','comment-import',$message_id); } if($result['item_id']) { $r = q("select * from item where id = %d limit 1", intval($result['item_id']) ); if($r) send_status_notifications($result['item_id'],$r[0]); } return; } function diaspora_conversation($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['channel_id'],$msg['author']); if(! $contact) { logger('diaspora_conversation: cannot find contact: ' . $msg['author']); return; } if(! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'post_mail')) { 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['channel_id']), 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['channel_id']), 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['channel_id']), 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); $maxlen = get_max_import_size(); if($maxlen && mb_strlen($body) > $maxlen) { $body = mb_substr($body,0,$maxlen,'UTF-8'); logger('message length exceeds max_import_size: truncated'); } $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,'xchan_pubkey')) $key = $person['xchan_pubkey']; else { logger('diaspora_conversation: unable to find author details'); continue; } } if(! rsa_verify($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; } } $r = q("select id from mail where mid = '%s' limit 1", dbesc($message_id) ); if(count($r)) { logger('diaspora_conversation: duplicate message already delivered.', LOGGER_DEBUG); continue; } $key = get_config('system','pubkey'); if($subject) $subject = json_encode(crypto_encapsulate($subject,$key)); if($body) $body = json_encode(crypto_encapsulate($body,$key)); q("insert into mail ( `channel_id`, `convid`, `from_xchan`,`to_xchan`,`title`,`body`,`mail_flags`,`mid`,`parent_mid`,`created`) values ( %d, %d, '%s', '%s', '%s', '%s', %d, '%s', '%s', '%s')", intval($importer['channel_id']), intval($conversation['id']), dbesc($person['xchan_hash']), dbesc($importer['channel_hash']), dbesc($subject), dbesc($body), intval(MAIL_OBSCURED), dbesc($msg_guid), 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'); /****** //FIXME 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 = $msg_parent_guid; $contact = diaspora_get_contact_by_handle($importer['channel_id'],$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['channel_id']), dbesc($msg_conversation_guid) ); if($c) $conversation = $c[0]; else { logger('diaspora_message: conversation not available.'); return; } $reply = 0; $subject = $conversation['subject']; $body = diaspora2bb($msg_text); $maxlen = get_max_import_size(); if($maxlen && mb_strlen($body) > $maxlen) { $body = mb_substr($body,0,$maxlen,'UTF-8'); logger('message length exceeds max_import_size: truncated'); } $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,'xchan_pubkey')) $key = $person['xchan_pubkey']; else { logger('diaspora_message: unable to find author details'); return; } if(! rsa_verify($author_signed_data,$author_signature,$key,'sha256')) { logger('diaspora_message: verification failed.'); return; } $r = q("select id from mail where mid = '%s' and channel_id = %d limit 1", dbesc($message_id), intval($importer['channel_id']) ); if($r) { logger('diaspora_message: duplicate message already delivered.', LOGGER_DEBUG); return; } $key = get_config('system','pubkey'); if($subject) $subject = json_encode(crypto_encapsulate($subject,$key)); if($body) $body = json_encode(crypto_encapsulate($body,$key)); q("insert into mail ( `channel_id`, `convid`, `from_xchan`,`to_xchan`,`title`,`body`,`mail_flags`,`mid`,`parent_mid`,`created`) values ( %d, %d, '%s', '%s', '%s', '%s', '%d','%s','%s','%s')", intval($importer['channel_id']), intval($conversation['id']), dbesc($person['xchan_hash']), dbesc($importer['xchan_hash']), dbesc($subject), dbesc($body), intval(MAIL_OBSCURED), dbesc($msg_guid), 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) { $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['channel_id'],$msg['author']); if(! $contact) { logger('diaspora_photo: contact record not found: ' . $msg['author'] . ' handle: ' . $diaspora_handle); return; } if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream'))) { logger('diaspora_photo: Ignoring this author.'); return 202; } $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `mid` = '%s' LIMIT 1", intval($importer['channel_id']), dbesc($status_message_guid) ); if(! $r) { 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['channel_id'],$msg['author']); if(! $contact) { logger('diaspora_like: cannot find contact: ' . $msg['author'] . ' for channel ' . $importer['channel_name']); return; } if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'post_comments'))) { logger('diaspora_like: Ignoring this author.'); return 202; } $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `mid` = '%s' LIMIT 1", intval($importer['channel_id']), dbesc($parent_guid) ); if(! count($r)) { logger('diaspora_like: parent item not found: ' . $guid); return; } $parent_item = $r[0]; $r = q("SELECT * FROM `item` WHERE `uid` = %d AND `mid` = '%s' LIMIT 1", intval($importer['channel_id']), 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'); // perhaps call drop_item() // FIXME--actually don't unless it turns out that Diaspora does indeed send out "false" likes // send notification via proc_run() return; } } $i = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($parent_item['author_xchan']) ); if($i) $item_author = $i[0]; // Note: I don't think "Like" objects with positive = "false" are ever actually used // It looks like "RelayableRetractions" are used for "unlike" instead if($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 */ // 2014-09-10 let's try this: signatures are failing. I'll try and make a signable string from // the parameters in the order they were presented in the post. This is how D* creates the signable string. $signed_data = $positive . ';' . $guid . ';' . $target_type . ';' . $parent_guid . ';' . $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,$key,'sha256')) { if (intval(get_config('system','ignore_diaspora_like_signature'))) logger('diaspora_like: like creator verification failed. Proceeding anyway'); else { logger('diaspora_like: like creator verification failed.'); return; } } } logger('diaspora_like: signature check complete.',LOGGER_DEBUG); // Phew! Everything checks out. Now create an item. // Find the original comment author information. // We need this to make sure we display the comment author // information (name and avatar) correctly. if(strcasecmp($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_type'] === 'photo') ? t('photo') : t('status')); $links = array(array('rel' => 'alternate','type' => 'text/html', 'href' => $parent_item['plink'])); $objtype = (($parent_item['resource_type'] === 'photo') ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE ); $body = $parent_item['body']; $object = json_encode(array( 'type' => $post_type, 'id' => $parent_item['mid'], 'parent' => (($parent_item['thr_parent']) ? $parent_item['thr_parent'] : $parent_item['parent_mid']), 'link' => $links, 'title' => $parent_item['title'], 'content' => $parent_item['body'], 'created' => $parent_item['created'], 'edited' => $parent_item['edited'], 'author' => array( 'name' => $item_author['xchan_name'], 'address' => $item_author['xchan_addr'], 'guid' => $item_author['xchan_guid'], 'guid_sig' => $item_author['xchan_guid_sig'], 'link' => array( array('rel' => 'alternate', 'type' => 'text/html', 'href' => $item_author['xchan_url']), array('rel' => 'photo', 'type' => $item_author['xchan_photo_mimetype'], 'href' => $item_author['xchan_photo_m'])), ), )); $bodyverb = t('%1$s likes %2$s\'s %3$s'); $arr = array(); $arr['uid'] = $importer['channel_id']; $arr['aid'] = $importer['channel_account_id']; $arr['mid'] = $guid; $arr['parent_mid'] = $parent_item['mid']; $arr['owner_xchan'] = $parent_item['owner_xchan']; $arr['author_xchan'] = $person['xchan_hash']; $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]'; $alink = '[url=' . $parent_item['author-link'] . ']' . $parent_item['author-name'] . '[/url]'; $plink = '[url='. z_root() .'/display/'.$guid.']'.$post_type.'[/url]'; $arr['body'] = sprintf( $bodyverb, $ulink, $alink, $plink ); $arr['app'] = 'Diaspora'; // set the route to that of the parent so downstream hubs won't reject it. $arr['route'] = $parent_item['route']; $arr['item_private'] = $parent_item['item_private']; $arr['verb'] = $activity; $arr['obj_type'] = $objtype; $arr['object'] = $object; if(! $parent_author_signature) { $key = get_config('system','pubkey'); $x = array('signer' => $diaspora_handle, 'body' => $text, 'signed_text' => $signed_data, 'signature' => base64_encode($author_signature)); $arr['diaspora_meta'] = json_encode(crypto_encapsulate(json_encode($x),$key)); } $x = item_store($arr); if($x) $message_id = $x['item_id']; // if the message isn't already being relayed, notify others // the existence of parent_author_signature means the parent_author or owner // is already relaying. The parent_item['origin'] indicates the message was created on our system if(($parent_item['item_flags'] & 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['channel_id'],$diaspora_handle); if(! $contact) return; if($type === 'Person') { require_once('include/Contact.php'); contact_remove($importer['channel_id'],$contact['abook_id']); } elseif($type === 'Post') { $r = q("select * from item where mid = '%s' and uid = %d limit 1", dbesc('guid'), intval($importer['channel_id']) ); if(count($r)) { if(link_compare($r[0]['author_xchan'],$contact['xchan_hash'])) { drop_item($r[0]['id'],false); } } } 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['channel_id'],$diaspora_handle); if(! $contact) { logger('diaspora_signed_retraction: no contact ' . $diaspora_handle . ' for ' . $importer['channel_id']); 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') { $r = q("select * from item where mid = '%s' and uid = %d limit 1", dbesc($guid), intval($importer['channel_id']) ); if($r) { if($r[0]['author_xchan'] == $contact['xchan_hash']) { drop_item($r[0]['id'],false, DROPITEM_PHASE1); // 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 item_flags from item where parent = %d and id = %d limit 1", $r[0]['parent'], $r[0]['parent'] ); if($p) { if(($p[0]['item_flags'] & ITEM_ORIGIN) && (! $parent_author_signature)) { // FIXME so we can relay this // 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['channel_id'],$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; } require_once('include/photo/photo_driver.php'); $images = import_profile_photo($image_url,$contact['xchan_hash']); // 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']; $r = q("update xchan set xchan_name = '%s', xchan_name_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s' ", dbesc($name), dbesc(datetime_convert()), dbesc($images[0]), dbesc($images[1]), dbesc($images[2]), dbesc($images[3]), dbesc(datetime_convert()), intval($contact['xchan_hash']) ); return; } function diaspora_share($owner,$contact) { $a = get_app(); $enabled = intval(get_config('system','diaspora_enabled')); if(! $enabled) { logger('diaspora_share: disabled'); return; } $allowed = get_pconfig($owner['channel_id'],'system','diaspora_allowed'); if($allowed === false) $allowed = 1; if(! intval($allowed)) { logger('diaspora_share: disallowed for channel ' . $importer['channel_name']); return; } $myaddr = $owner['channel_address'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); if(! array_key_exists('xchan_hash',$contact)) { $c = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where xchan_hash = '%s' limit 1", dbesc($contact['hubloc_hash']) ); if(! $c) { logger('diaspora_share: ' . $contact['hubloc_hash'] . ' not found.'); return; } $contact = $c[0]; } $theiraddr = $contact['xchan_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,$owner,$contact,$owner['channel_prvkey'],$contact['xchan_pubkey']))); return(diaspora_transmit($owner,$contact,$slap, false)); } function diaspora_unshare($owner,$contact) { $a = get_app(); $myaddr = $owner['channel_address'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); $tpl = get_markup_template('diaspora_retract.tpl'); $msg = replace_macros($tpl, array( '$guid' => $owner['channel_guid'], '$type' => 'Person', '$handle' => $myaddr )); $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['channel_prvkey'],$contact['xchan_pubkey']))); return(diaspora_transmit($owner,$contact,$slap, false)); } function diaspora_send_status($item,$owner,$contact,$public_batch = false) { $a = get_app(); $myaddr = $owner['channel_address'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); if(intval($item['id']) != intval($item['parent'])) { logger('attempted to send a comment as a top-level post'); return; } $images = array(); $title = $item['title']; $body = bb2diaspora_itembody($item,true); /* // 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($item['item_flags'] & ITEM_CONSENSUS) { $poll = replace_macros(get_markup_template('diaspora_consensus.tpl'), array( '$guid_q' => random_string(), '$question' => t('Please choose'), '$guid_y' => random_string(), '$agree' => t('Agree'), '$guid_n' => random_string(), '$disagree' => t('Disagree'), '$guid_a' => random_string(), '$abstain' => t('Abstain') )); } else $poll = ''; $public = (($item['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 (!$item['item_private'] AND ($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' => $item['mid'], '$handle' => xmlify($myaddr), '$public' => $public, '$created' => $created, '$provider' => (($item['app']) ? $item['app'] : t('$projectname')) )); } else { $tpl = get_markup_template('diaspora_post.tpl'); $msg = replace_macros($tpl, array( '$body' => xmlify($body), '$guid' => $item['mid'], '$poll' => $poll, '$handle' => xmlify($myaddr), '$public' => $public, '$created' => $created, '$provider' => (($item['app']) ? $item['app'] : t('$projectname')) )); } logger('diaspora_send_status: '.$owner['channel_name'].' -> '.$contact['xchan_name'].' base message: ' . $msg, LOGGER_DATA); $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['channel_prvkey'],$contact['xchan_pubkey'],$public_batch))); $return_code = diaspora_transmit($owner,$contact,$slap,$public_batch); // logger('diaspora_send_status: guid: '.$item['mid'].' 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(! $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]['resource_id']), '$handle' => xmlify($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,$owner['channel_prvkey'],$contact['xchan_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['channel_address'] . '@' . get_app()->get_hostname(); $theiraddr = $contact['xchan_addr']; // Diaspora doesn't support threaded comments, but some // versions of Diaspora (i.e. Diaspora-pistos) support // likes on comments if(($item['verb'] === ACTIVITY_LIKE || $item['verb'] === ACTIVITY_DISLIKE) && $item['thr_parent']) { $p = q("select mid, parent_mid from item where mid = '%s' limit 1", dbesc($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. $p = q("select * from item where parent = %d and id = %d limit 1", intval($item['parent']), intval($item['parent']) ); } if($p) $parent = $p[0]; else return; if(($item['verb'] === ACTIVITY_LIKE) && ($parent['mid'] === $parent['parent_mid'])) { $tpl = get_markup_template('diaspora_like.tpl'); $like = true; $target_type = 'Post'; $positive = 'true'; if(($item_['item_restrict'] & ITEM_DELETED)) logger('diaspora_send_followup: received deleted "like". Those should go to diaspora_send_retraction'); } else { $tpl = get_markup_template('diaspora_comment.tpl'); $like = false; } if($item['diaspora_meta'] && ! $like) { $diaspora_meta = json_decode($item['diaspora_meta'],true); if($diaspora_meta) { if(array_key_exists('iv',$diaspora_meta)) { $key = get_config('system','prvkey'); $meta = json_decode(crypto_unencapsulate($diaspora_meta,$key),true); } else $meta = $diaspora_meta; } $signed_text = $meta['signed_text']; $authorsig = $meta['signature']; $signer = $meta['signer']; $text = $meta['body']; } else { $text = bb2diaspora_itembody($item); // sign it if($like) $signed_text = $item['mid'] . ';' . $target_type . ';' . $parent['mid'] . ';' . $positive . ';' . $myaddr; else $signed_text = $item['mid'] . ';' . $parent['mid'] . ';' . $text . ';' . $myaddr; $authorsig = base64_encode(rsa_sign($signed_text,$owner['channel_prvkey'],'sha256')); } $msg = replace_macros($tpl,array( '$guid' => xmlify($item['mid']), '$parent_guid' => xmlify($parent['mid']), '$target_type' =>xmlify($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,$owner['channel_prvkey'],$contact['xchan_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['channel_address'] . '@' . get_app()->get_hostname(); $text = bb2diaspora_itembody($item); $body = $text; // Diaspora doesn't support threaded comments, but some // versions of Diaspora (i.e. Diaspora-pistos) support // likes on comments // That version is now dead so detect a "sublike" and // just send it as an activity. $sublike = false; if($item['verb'] === ACTIVITY_LIKE && $item['thr_parent']) { $sublike = true; } // 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. $p = q("select * from item where parent = %d and id = %d limit 1", intval($item['parent']), intval($item['parent']) ); if($p) $parent = $p[0]; else { logger('diaspora_send_relay: no parent'); return; } $like = false; $relay_retract = false; $sql_sign_id = 'iid'; if( $item['item_restrict'] & ITEM_DELETED) { $relay_retract = true; $target_type = ( ($item['verb'] === ACTIVITY_LIKE && (! $sublike)) ? 'Like' : 'Comment'); $sql_sign_id = 'retract_iid'; $tpl = get_markup_template('diaspora_relayable_retraction.tpl'); } elseif(($item['verb'] === ACTIVITY_LIKE) && (! $sublike)) { $like = true; $target_type = ( $parent['mid'] === $parent['parent_mid'] ? 'Post' : 'Comment'); // $positive = (($item['item_restrict'] & 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'); } $diaspora_meta = (($item['diaspora_meta']) ? json_decode($item['diaspora_meta'],true) : ''); if($diaspora_meta) { if(array_key_exists('iv',$diaspora_meta)) { $key = get_config('system','prvkey'); $meta = json_decode(crypto_unencapsulate($diaspora_meta,$key),true); } else $meta = $diaspora_meta; $sender_signed_text = $meta['signed_text']; $authorsig = $meta['signature']; $handle = $meta['signer']; $text = $meta['body']; } else logger('diaspora_send_relay: original author signature not found'); /* 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. * * */ // bug - nomadic identity may/will affect diaspora_handle_from_contact if(! $handle) { if($item['author_xchan'] === $owner['channel_hash']) $handle = $owner['channel_address'] . '@' . substr($a->get_baseurl(), strpos($a->get_baseurl(),'://') + 3); else $handle = diaspora_handle_from_contact($item['author_xchan']); } if(! $handle) { logger('diaspora_send_relay: no handle'); return; } if(! $sender_signed_text) { if($relay_retract) $sender_signed_text = $item['mid'] . ';' . $target_type; elseif($like) $sender_signed_text = $positive . ';' . $item['mid'] . ';' . $target_type . ';' . $parent['mid'] . ';' . $handle; else $sender_signed_text = $item['mid'] . ';' . $parent['mid'] . ';' . $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['channel_prvkey'],'sha256')); if(! $text) logger('diaspora_send_relay: no text'); $msg = replace_macros($tpl,array( '$guid' => xmlify($item['mid']), '$parent_guid' => xmlify($parent['mid']), '$target_type' =>xmlify($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,$owner['channel_prvkey'],$contact['xchan_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['channel_address'] . '@' . get_app()->get_hostname(); // Check whether the retraction is for a top-level post or whether it's a relayable if( $item['mid'] !== $item['parent_mid'] ) { $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['mid'] . ';' . $target_type; $msg = replace_macros($tpl, array( '$guid' => xmlify($item['mid']), '$type' => xmlify($target_type), '$handle' => xmlify($myaddr), '$signature' => xmlify(base64_encode(rsa_sign($signed_text,$owner['channel_prvkey'],'sha256'))) )); $slap = 'xml=' . urlencode(urlencode(diaspora_msg_build($msg,$owner,$contact,$owner['channel_prvkey'],$contact['xchan_pubkey'],$public_batch))); return(diaspora_transmit($owner,$contact,$slap,$public_batch)); } function diaspora_send_mail($item,$owner,$contact) { $a = get_app(); $myaddr = $owner['channel_address'] . '@' . get_app()->get_hostname(); $r = q("select * from conv where id = %d and uid = %d limit 1", intval($item['convid']), intval($item['channel_id']) ); if(! count($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']) ); if(array_key_exists('mail_flags',$item) && ($item['mail_flags'] & MAIL_OBSCURED)) { $key = get_config('system','prvkey'); // if($item['title']) // $item['title'] = crypto_unencapsulate(json_decode_plus($item['title']),$key); if($item['body']) $item['body'] = crypto_unencapsulate(json_decode_plus($item['body']),$key); } $body = bb2diaspora($item['body']); $created = datetime_convert('UTC','UTC',$item['created'],'Y-m-d H:i:s \U\T\C'); $signed_text = $item['mid'] . ';' . $cnv['guid'] . ';' . $body . ';' . $created . ';' . $myaddr . ';' . $cnv['guid']; $sig = base64_encode(rsa_sign($signed_text,$owner['channel_prvkey'],'sha256')); $msg = array( 'guid' => xmlify($item['mid']), '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,$owner['channel_prvkey'],$contact['xchan_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; } $allowed = get_pconfig($owner['channel_id'],'system','diaspora_allowed'); if($allowed === false) $allowed = 1; if(! intval($allowed)) { return 200; } if($public_batch) $dest_url = $contact['hubloc_callback'] . '/public'; else $dest_url = $contact['hubloc_callback'] . '/users/' . $contact['hubloc_guid']; logger('diaspora_transmit: URL: ' . $dest_url, LOGGER_DEBUG); if(intval(get_config('system','diaspora_test'))) return 200; $a = get_app(); $logid = random_string(4); logger('diaspora_transmit: ' . $logid . ' ' . $dest_url, LOGGER_DEBUG); $hash = random_string(); $interval = ((get_config('system','delivery_interval') !== false) ? intval(get_config('system','delivery_interval')) : 2 ); q("insert into outq ( outq_hash, outq_account, outq_channel, outq_driver, outq_posturl, outq_async, outq_created, outq_updated, outq_notify, outq_msg ) values ( '%s', %d, %d, '%s', '%s', %d, '%s', '%s', '%s', '%s' )", dbesc($hash), intval($owner['account_id']), intval($owner['channel_id']), dbesc('post'), dbesc($dest_url), intval(1), dbesc(datetime_convert()), dbesc(datetime_convert()), dbesc(''), dbesc($slap) ); proc_run('php','include/deliver.php',$hash); if($interval) @time_sleep_until(microtime(true) + (float) $interval); }