]> git.mxchange.org Git - friendica.git/blobdiff - mod/like.php
Merge pull request #562 from fermionic/20121225-smarty-includes-like-friendicas
[friendica.git] / mod / like.php
old mode 100644 (file)
new mode 100755 (executable)
index 5c3dd32..aaa8592
@@ -37,7 +37,7 @@ function like_content(&$a) {
        logger('like: verb ' . $verb . ' item ' . $item_id);
 
 
-       $r = q("SELECT * FROM `item` WHERE ( `id` = '%s' OR `uri` = '%s') AND `id` = `parent` LIMIT 1",
+       $r = q("SELECT * FROM `item` WHERE `id` = '%s' OR `uri` = '%s' LIMIT 1",
                dbesc($item_id),
                dbesc($item_id)
        );
@@ -104,21 +104,39 @@ function like_content(&$a) {
                return;
        }
 
-       $r = q("SELECT `id` FROM `item` WHERE `verb` = '%s' AND `deleted` = 0 
-               AND `contact-id` = %d AND ( `parent` = '%s' OR `parent-uri` = '%s') LIMIT 1",
+
+       $r = q("SELECT * FROM `item` WHERE `verb` = '%s' AND `deleted` = 0 
+               AND `contact-id` = %d AND ( `parent` = '%s' OR `parent-uri` = '%s' OR `thr-parent` = '%s') LIMIT 1",
                dbesc($activity),
                intval($contact['id']),
                dbesc($item_id),
-               dbesc($item_id)
+               dbesc($item_id),
+               dbesc($item['uri'])
        );
        if(count($r)) {
+               $like_item = $r[0];
+
                // Already voted, undo it
-               $r = q("UPDATE `item` SET `deleted` = 1, `changed` = '%s' WHERE `id` = %d LIMIT 1",
+               $r = q("UPDATE `item` SET `deleted` = 1, `unseen` = 1, `changed` = '%s' WHERE `id` = %d LIMIT 1",
                        dbesc(datetime_convert()),
-                       intval($r[0]['id'])
+                       intval($like_item['id'])
                );
 
-               proc_run('php',"include/notifier.php","like","$post_id");
+
+               // Clean up the Diaspora signatures for this like
+               // Go ahead and do it even if Diaspora support is disabled. We still want to clean up
+               // if it had been enabled in the past
+               $r = q("DELETE FROM `sign` WHERE `iid` = %d",
+                       intval($like_item['id'])
+               );
+
+               // Save the author information for the unlike in case we need to relay to Diaspora
+               store_diaspora_like_retract_sig($activity, $item, $like_item, $contact);
+
+
+//             proc_run('php',"include/notifier.php","like","$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;
        }
 
@@ -159,6 +177,7 @@ EOT;
        $arr['gravity'] = GRAVITY_LIKE;
        $arr['parent'] = $item['id'];
        $arr['parent-uri'] = $item['uri'];
+       $arr['thr-parent'] = $item['uri'];
        $arr['owner-name'] = $remote_owner['name'];
        $arr['owner-link'] = $remote_owner['url'];
        $arr['owner-avatar'] = $remote_owner['thumb'];
@@ -191,11 +210,138 @@ EOT;
                );
        }                       
 
+
+       // Save the author information for the like in case we need to relay to Diaspora
+       store_diaspora_like_sig($activity, $post_type, $contact, $post_id);
+
+
        $arr['id'] = $post_id;
 
        call_hooks('post_local_end', $arr);
 
        proc_run('php',"include/notifier.php","like","$post_id");
 
-       return; // NOTREACHED
-}
\ No newline at end of file
+       killme();
+//     return; // NOTREACHED
+}
+
+
+function store_diaspora_like_retract_sig($activity, $item, $like_item, $contact) {
+       // 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.
+
+       $enabled = intval(get_config('system','diaspora_enabled'));
+       if(! $enabled) {
+               logger('mod_like: diaspora support disabled, not storing like retraction signature', LOGGER_DEBUG);
+               return;
+       }
+
+       logger('mod_like: storing diaspora like retraction signature');
+
+       if(($activity === ACTIVITY_LIKE) && (! $item['resource-id'])) {
+               $signed_text = $like_item['guid'] . ';' . 'Like';
+
+               // 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($diaspora_handle)
+               );
+       }
+
+       return;
+}
+
+function store_diaspora_like_sig($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;
+
+               // 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)
+                               );
+                       }
+               }
+       }
+
+       return;
+}