-
-function store_diaspora_like_sig($activity, $post_type, $contact, $post_id) {
- // Note that we can only create a signature for a user of the local server. We don't have
- // a key for remote users. That is ok, because if a remote user is "unlike"ing a post, it
- // means we are the relay, and for relayable_retractions, Diaspora
- // only checks the parent_author_signature if it doesn't have to relay further
-
- $enabled = intval(get_config('system','diaspora_enabled'));
- if(! $enabled) {
- logger('mod_like: diaspora support disabled, not storing like signature', LOGGER_DEBUG);
- return;
- }
-
- logger('mod_like: storing diaspora like signature');
-
- if(($activity === ACTIVITY_LIKE) && ($post_type === t('status'))) {
- // Only works for NETWORK_DFRN
- $contact_baseurl_start = strpos($contact['url'],'://') + 3;
- $contact_baseurl_length = strpos($contact['url'],'/profile') - $contact_baseurl_start;
- $contact_baseurl = substr($contact['url'], $contact_baseurl_start, $contact_baseurl_length);
- $diaspora_handle = $contact['nick'] . '@' . $contact_baseurl;
-
-
- // This code could never had worked (the return values form the queries were used in a wrong way.
- // Additionally it is needlessly complicated. Either the contact is owner or not. And we have this data already.
-/*
- // Get contact's private key if he's a user of the local Friendica server
- $r = q("SELECT `contact`.`uid` FROM `contact` WHERE `url` = '%s' AND `self` = 1 LIMIT 1",
- dbesc($contact['url'])
- );
-
- if( $r) {
- $contact_uid = $r['uid'];
- $r = q("SELECT prvkey FROM user WHERE uid = %d LIMIT 1",
- intval($contact_uid)
- );
-
- if( $r)
- $contact_uprvkey = $r['prvkey'];
- }
-*/
-
- // Is the contact the owner? Then fetch the private key
- if ($contact['self'] AND ($contact['uid'] > 0)) {
- $r = q("SELECT prvkey FROM user WHERE uid = %d LIMIT 1",
- intval($contact['uid'])
- );
-
- if($r)
- $contact_uprvkey = $r[0]['prvkey'];
- }
-
- $r = q("SELECT guid, parent FROM `item` WHERE id = %d LIMIT 1",
- intval($post_id)
- );
- if( $r) {
- $p = q("SELECT guid FROM `item` WHERE id = %d AND parent = %d LIMIT 1",
- intval($r[0]['parent']),
- intval($r[0]['parent'])
- );
- if( $p) {
- $signed_text = 'true;'.$r[0]['guid'].';Post;'.$p[0]['guid'].';'.$diaspora_handle;
-
- if(isset($contact_uprvkey))
- $authorsig = base64_encode(rsa_sign($signed_text,$contact_uprvkey,'sha256'));
- else
- $authorsig = '';
-
- q("insert into sign (`iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
- intval($post_id),
- dbesc($signed_text),
- dbesc($authorsig),
- dbesc($diaspora_handle)
- );
- }
- }
- }
-
- return;
-}