',''),
array('',''),
$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' => $walltowall,
));
*/
if($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
base64url
RSA-SHA256
$data
$sig
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
$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['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
*
*
* 8e+G2+ET8l5BPuW0sVTnQw==
* UvSMb4puPeB14STkcDWq+4QE302Edu15oaprAQSkLKU=
***** OBSOLETE
*
* Ryan Hughes
* acct:galaxor@diaspora.pirateship.org
*
***** CURRENT
* galaxor@diaspora.priateship.org
***** END DIFFS
*
*/
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;
}
$role = get_pconfig($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]);
}
}
}
// 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';
}
if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream'))) {
logger('diaspora_post: Ignoring this author.');
return 202;
}
$search_guid = ((strlen($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, $importer['channel_id']);
if($results) {
$datarray['term'] = array();
foreach($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']
);
}
}
}
$plink = service_plink($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;
$result = item_store($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;
if((! $importer['system']) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'send_stream'))) {
logger('diaspora_reshare: Ignoring this author: ' . $diaspora_handle . ' ' . print_r($xml,true));
return 202;
}
$search_guid = ((strlen($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, $importer['channel_id']);
if($results) {
$datarray['term'] = array();
foreach($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']
);
}
}
}
$newbody = "[share author='" . urlencode($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';
$result = item_store($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;
// 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
if((! $importer['system']) && (! $pubcomment) && (! perm_is_allowed($importer['channel_id'],$contact['xchan_hash'],'post_comments'))) {
logger('diaspora_comment: Ignoring this author.');
return 202;
}
$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']
$author_signature = base64_decode($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, $importer['channel_id']);
if($results) {
$datarray['term'] = array();
foreach($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']
);
}
}
}
$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));
}
$result = item_store($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();
$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);
$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);
}
}
*/
$public = (($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'] : 'redmatrix')
));
} else {
$tpl = get_markup_template('diaspora_post.tpl');
$msg = replace_macros($tpl, array(
'$body' => xmlify($body),
'$guid' => $item['mid'],
'$handle' => xmlify($myaddr),
'$public' => $public,
'$created' => $created,
'$provider' => (($item['app']) ? $item['app'] : 'redmatrix')
));
}
logger('diaspora_send_status: '.$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 = $text;
// Diaspora doesn't support threaded comments, but some
// versions of Diaspora (i.e. Diaspora-pistos) support
// likes on comments
if($item['verb'] === ACTIVITY_LIKE && $item['thr_parent']) {
$p = q("select * from item where mid = '%s' limit 1",
dbesc($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 {
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) ? '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['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(! $enabled) {
return 200;
}
if($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);
}