diff options
Diffstat (limited to 'mod/like.php')
| -rwxr-xr-x[-rw-r--r--] | mod/like.php | 125 |
1 files changed, 121 insertions, 4 deletions
diff --git a/mod/like.php b/mod/like.php index 6b97fafb5..942a04fe7 100644..100755 --- a/mod/like.php +++ b/mod/like.php @@ -104,7 +104,8 @@ function like_content(&$a) { return; } - $r = q("SELECT `id` FROM `item` WHERE `verb` = '%s' AND `deleted` = 0 + + $r = q("SELECT * FROM `item` WHERE `verb` = '%s' AND `deleted` = 0 AND `contact-id` = %d AND ( `parent` = '%s' OR `parent-uri` = '%s') LIMIT 1", dbesc($activity), intval($contact['id']), @@ -112,13 +113,70 @@ function like_content(&$a) { dbesc($item_id) ); if(count($r)) { + $like_item = $r[0]; + // Already voted, undo it $r = q("UPDATE `item` SET `deleted` = 1, `changed` = '%s' WHERE `id` = %d LIMIT 1", dbesc(datetime_convert()), - intval($r[0]['id']) + intval($like_item['id']) ); - proc_run('php',"include/notifier.php","like","$post_id"); + // Clean up the `sign` table + $r = q("DELETE FROM `sign` WHERE `iid` = %d", + intval($like_item['id']) + ); + + // Save the author information for the unlike in case we need to relay to Diaspora + // 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 + // + // If $item['resource-id'] exists, it means the item is a photo. Diaspora doesn't support + // likes on photos, so don't bother. + + if(($activity === ACTIVITY_LIKE) && (! $item['resource-id'])) { + $signed_text = $like_item['guid'] . ';' . 'Like'; + + if( $contact['network'] === NETWORK_DIASPORA) + $diaspora_handle = $contact['addr']; + else { // 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; + + // 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) + $authorsig = base64_encode(rsa_sign($signed_text,$r['prvkey'],'sha256')); + } + } + + if(! isset($authorsig)) + $authorsig = ''; + + q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ", + intval($like_item['id']), + dbesc($signed_text), + dbesc($authorsig), + dbesc($diaspora_handle) + ); + } + + +// proc_run('php',"include/notifier.php","like","$post_id"); // $post_id isn't defined here! + $like_item_id = $like_item['id']; + proc_run('php',"include/notifier.php","like","$like_item_id"); return; } @@ -191,6 +249,65 @@ EOT; ); } + + // Save the author information for the like in case we need to relay to Diaspora + // 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 + + if(($activity === ACTIVITY_LIKE) && ($post_type === t('status'))) { + if( $contact['network'] === NETWORK_DIASPORA) + $diaspora_handle = $contact['addr']; + else { // 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; + + // 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']; + } + } + + $r = q("SELECT guid, parent FROM `item` WHERE id = %d LIMIT 1", + intval($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 = $r[0]['guid'] . ';Post;' . $p[0]['guid'] . ';true;' . $diaspora_handle; + + if(isset($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) + ); + } + } + } + + $arr['id'] = $post_id; call_hooks('post_local_end', $arr); @@ -199,4 +316,4 @@ EOT; killme(); // return; // NOTREACHED -}
\ No newline at end of file +} |