]> git.mxchange.org Git - friendica.git/blobdiff - include/like.php
Merge pull request #3310 from annando/1704-probing
[friendica.git] / include / like.php
index 646e0727be4ec63f09773ed6fddea299ed635db0..a53b90c0398ce11f215ad1b9d660eb6fbf0c2c01 100644 (file)
@@ -1,4 +1,5 @@
 <?php
+require_once("include/diaspora.php");
 
 /**
  * @brief add/remove activity to an item
 function do_like($item_id, $verb) {
        $a = get_app();
 
-       if(! local_user() && ! remote_user()) {
+       if (! local_user() && ! remote_user()) {
                return false;
        }
 
-       switch($verb) {
+       switch ($verb) {
                case 'like':
+                       $bodyverb = t('%1$s likes %2$s\'s %3$s');
+                       $activity = ACTIVITY_LIKE;
+                       break;
                case 'unlike':
+                       $bodyverb = t('%1$s doesn\'t like %2$s\'s %3$s');
                        $activity = ACTIVITY_LIKE;
                        break;
                case 'dislike':
                case 'undislike':
+                       $bodyverb = t('%1$s doesn\'t like %2$s\'s %3$s');
                        $activity = ACTIVITY_DISLIKE;
                        break;
                case 'attendyes':
                case 'unattendyes':
+                       $bodyverb = t('%1$s is attending %2$s\'s %3$s');
                        $activity = ACTIVITY_ATTEND;
                        break;
                case 'attendno':
                case 'unattendno':
+                       $bodyverb = t('%1$s is not attending %2$s\'s %3$s');
                        $activity = ACTIVITY_ATTENDNO;
                        break;
                case 'attendmaybe':
                case 'unattendmaybe':
+                       $bodyverb = t('%1$s may attend %2$s\'s %3$s');
                        $activity = ACTIVITY_ATTENDMAYBE;
                        break;
                default:
+                       logger('like: unknown verb ' . $verb . ' for item ' . $item_id);
                        return false;
-                       break;
        }
 
+       // Enable activity toggling instead of on/off
+       $event_verb_flag = $activity === ACTIVITY_ATTEND || $activity === ACTIVITY_ATTENDNO || $activity === ACTIVITY_ATTENDMAYBE;
 
        logger('like: verb ' . $verb . ' item ' . $item_id);
 
-
-       $r = q("SELECT * FROM `item` WHERE `id` = '%s' OR `uri` = '%s' LIMIT 1",
+       // Retrieve item
+       $items = q("SELECT * FROM `item` WHERE `id` = '%s' OR `uri` = '%s' LIMIT 1",
                dbesc($item_id),
                dbesc($item_id)
        );
 
-       if(! $item_id || (! count($r))) {
-               logger('like: no item ' . $item_id);
+       if (! $item_id || ! dbm::is_result($items)) {
+               logger('like: unknown item ' . $item_id);
                return false;
        }
 
-       $item = $r[0];
-
-       $owner_uid = $item['uid'];
+       $item = $items[0];
 
-       if(! can_write_wall($a,$owner_uid)) {
+       if (! can_write_wall($a, $item['uid'])) {
+               logger('like: unable to write on wall ' . $item['uid']);
                return false;
        }
 
-       $remote_owner = null;
-
-       if(! $item['wall']) {
-               // The top level post may have been written by somebody on another system
-               $r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
-                       intval($item['contact-id']),
-                       intval($item['uid'])
-               );
-               if(! count($r))
-                       return false;
-               if(! $r[0]['self'])
-                       $remote_owner = $r[0];
+       // Retrieves the local post owner
+       $owners = q("SELECT `contact`.* FROM `contact`
+               WHERE `contact`.`self` = 1
+               AND `contact`.`uid` = %d",
+               intval($item['uid'])
+       );
+       if (dbm::is_result($owners)) {
+               $owner_self_contact = $owners[0];
+       } else {
+               logger('like: unknown owner ' . $item['uid']);
+               return false;
        }
 
-       // this represents the post owner on this system.
+       // Retrieve the current logged in user's public contact
+       $author_id = public_contact();
 
-       $r = q("SELECT `contact`.*, `user`.`nickname` FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
-               WHERE `contact`.`self` = 1 AND `contact`.`uid` = %d LIMIT 1",
-               intval($owner_uid)
+       $contacts = q("SELECT * FROM `contact` WHERE `id` = %d",
+               intval($author_id)
        );
-       if(count($r))
-               $owner = $r[0];
-
-       if(! $owner) {
-               logger('like: no owner');
+       if (dbm::is_result($contacts)) {
+               $author_contact = $contacts[0];
+       } else {
+               logger('like: unknown author ' . $author_id);
                return false;
        }
 
-       if(! $remote_owner)
-               $remote_owner = $owner;
-
+       // Contact-id is the uid-dependant author contact
+       if (local_user() == $item['uid']) {
+               $item_contact_id = $owner_self_contact['id'];
+               $item_contact = $owner_self_contact;
+       } else {
+               $item_contact_id = get_contact($author_contact['url'], $item['uid']);
 
-       // This represents the person posting
-
-       if((local_user()) && (local_user() == $owner_uid)) {
-               $contact = $owner;
-       }
-       else {
-               $r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
-                       intval($_SESSION['visitor_id']),
-                       intval($owner_uid)
+               $contacts = q("SELECT * FROM `contact` WHERE `id` = %d",
+                       intval($item_contact_id)
                );
-               if(count($r))
-                       $contact = $r[0];
-       }
-       if(! $contact) {
-               return false;
+               if (dbm::is_result($contacts)) {
+                       $item_contact = $contacts[0];
+               } else {
+                       logger('like: unknown item contact ' . $item_contact_id);
+                       return false;
+               }
        }
 
-
-       $verbs = " '".dbesc($activity)."' ";
-
+       // Look for an existing verb row
        // event participation are essentially radio toggles. If you make a subsequent choice,
        // we need to eradicate your first choice.
-       if($activity === ACTIVITY_ATTEND || $activity === ACTIVITY_ATTENDNO || $activity === ACTIVITY_ATTENDMAYBE) {
-               $verbs = " '" . dbesc(ACTIVITY_ATTEND) . "','" . dbesc(ACTIVITY_ATTENDNO) . "','" . dbesc(ACTIVITY_ATTENDMAYBE) . "' ";
-       }
-
-       $r = q("SELECT `id`, `guid` FROM `item` WHERE `verb` IN ( $verbs ) AND `deleted` = 0
-               AND `contact-id` = %d AND `uid` = %d
-               AND (`parent` = '%s' OR `parent-uri` = '%s' OR `thr-parent` = '%s') LIMIT 1",
-               intval($contact['id']), intval($owner_uid),
+       if ($event_verb_flag) {
+               $verbs = "'" . dbesc(ACTIVITY_ATTEND) . "', '" . dbesc(ACTIVITY_ATTENDNO) . "', '" . dbesc(ACTIVITY_ATTENDMAYBE) . "'";
+       } else {
+               $verbs = "'".dbesc($activity)."'";
+       }
+
+       $existing_like = q("SELECT `id`, `guid`, `verb` FROM `item`
+               WHERE `verb` IN ($verbs)
+               AND `deleted` = 0
+               AND `author-id` = %d
+               AND `uid` = %d
+               AND (`parent` = '%s' OR `parent-uri` = '%s' OR `thr-parent` = '%s')
+               LIMIT 1",
+               intval($author_contact['id']),
+               intval($item['uid']),
                dbesc($item_id), dbesc($item_id), dbesc($item['uri'])
        );
 
-       if(count($r)) {
-               $like_item = $r[0];
+       // If it exists, mark it as deleted
+       if (dbm::is_result($existing_like)) {
+               $like_item = $existing_like[0];
 
                // Already voted, undo it
-               $r = q("UPDATE `item` SET `deleted` = 1, `unseen` = 1, `changed` = '%s' WHERE `id` = %d",
+               q("UPDATE `item` SET `deleted` = 1, `unseen` = 1, `changed` = '%s' WHERE `id` = %d",
                        dbesc(datetime_convert()),
                        intval($like_item['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
-               $r = q("DELETE FROM `sign` WHERE `iid` = %d",
+               q("DELETE FROM `sign` WHERE `iid` = %d",
                        intval($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);
-
                $like_item_id = $like_item['id'];
-               proc_run('php',"include/notifier.php","like","$like_item_id");
+               proc_run(PRIORITY_HIGH, "include/notifier.php", "like", $like_item_id);
 
-               return true;
+               if (!$event_verb_flag || $like_item['verb'] == $activity) {
+                       return true;
+               }
        }
 
-       $uri = item_new_uri($a->get_hostname(),$owner_uid);
+       // Verb is "un-something", just trying to delete existing entries
+       if (strpos($verb, 'un') === 0) {
+               return true;
+       }
 
+       // Else or if event verb different from existing row, create a new item row
        $post_type = (($item['resource-id']) ? t('photo') : t('status'));
-       if($item['obj_type'] === ACTIVITY_OBJ_EVENT)
+       if ($item['object-type'] === ACTIVITY_OBJ_EVENT) {
                $post_type = t('event');
-       $objtype = (($item['resource-id']) ? ACTIVITY_OBJ_PHOTO : ACTIVITY_OBJ_NOTE );
-       $link = xmlify('<link rel="alternate" type="text/html" href="' . $a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id'] . '" />' . "\n") ;
+       }
+       $objtype = $item['resource-id'] ? ACTIVITY_OBJ_IMAGE : ACTIVITY_OBJ_NOTE ;
+       $link = xmlify('<link rel="alternate" type="text/html" href="' . App::get_baseurl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . '" />' . "\n") ;
        $body = $item['body'];
 
        $obj = <<< EOT
@@ -180,219 +194,62 @@ function do_like($item_id, $verb) {
                <content>$body</content>
        </object>
 EOT;
-       if($verb === 'like')
-               $bodyverb = t('%1$s likes %2$s\'s %3$s');
-       if($verb === 'dislike')
-               $bodyverb = t('%1$s doesn\'t like %2$s\'s %3$s');
-       if($verb === 'attendyes')
-               $bodyverb = t('%1$s is attending %2$s\'s %3$s');
-       if($verb === 'attendno')
-               $bodyverb = t('%1$s is not attending %2$s\'s %3$s');
-       if($verb === 'attendmaybe')
-               $bodyverb = t('%1$s may attend %2$s\'s %3$s');
-
-       if(! isset($bodyverb))
-                       return false;
 
-       $arr = array();
-
-       $arr['uri'] = $uri;
-       $arr['uid'] = $owner_uid;
-       $arr['contact-id'] = $contact['id'];
-       $arr['type'] = 'activity';
-       $arr['wall'] = $item['wall'];
-       $arr['origin'] = 1;
-       $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'];
-       $arr['author-name'] = $contact['name'];
-       $arr['author-link'] = $contact['url'];
-       $arr['author-avatar'] = $contact['thumb'];
-
-       $ulink = '[url=' . $contact['url'] . ']' . $contact['name'] . '[/url]';
+       $ulink = '[url=' . $author_contact['url'] . ']' . $author_contact['name'] . '[/url]';
        $alink = '[url=' . $item['author-link'] . ']' . $item['author-name'] . '[/url]';
-       $plink = '[url=' . $a->get_baseurl() . '/display/' . $owner['nickname'] . '/' . $item['id'] . ']' . $post_type . '[/url]';
-       $arr['body'] =  sprintf( $bodyverb, $ulink, $alink, $plink );
-
-       $arr['verb'] = $activity;
-       $arr['object-type'] = $objtype;
-       $arr['object'] = $obj;
-       $arr['allow_cid'] = $item['allow_cid'];
-       $arr['allow_gid'] = $item['allow_gid'];
-       $arr['deny_cid'] = $item['deny_cid'];
-       $arr['deny_gid'] = $item['deny_gid'];
-       $arr['visible'] = 1;
-       $arr['unseen'] = 1;
-       $arr['last-child'] = 0;
-
-       $post_id = item_store($arr);
-
-       if(! $item['visible']) {
-               $r = q("UPDATE `item` SET `visible` = 1 WHERE `id` = %d AND `uid` = %d",
+       $plink = '[url=' . App::get_baseurl() . '/display/' . $owner_self_contact['nick'] . '/' . $item['id'] . ']' . $post_type . '[/url]';
+
+       $new_item = array(
+               'guid'          => get_guid(32),
+               'uri'           => item_new_uri($a->get_hostname(), $item['uid']),
+               'uid'           => $item['uid'],
+               'contact-id'    => $item_contact_id,
+               'type'          => 'activity',
+               'wall'          => $item['wall'],
+               'origin'        => 1,
+               'gravity'       => GRAVITY_LIKE,
+               'parent'        => $item['id'],
+               'parent-uri'    => $item['uri'],
+               'thr-parent'    => $item['uri'],
+               'owner-id'      => $item['owner-id'],
+               'owner-name'    => $item['owner-name'],
+               'owner-link'    => $item['owner-link'],
+               'owner-avatar'  => $item['owner-avatar'],
+               'author-id'     => $author_contact['id'],
+               'author-name'   => $author_contact['name'],
+               'author-link'   => $author_contact['url'],
+               'author-avatar' => $author_contact['thumb'],
+               'body'          => sprintf($bodyverb, $ulink, $alink, $plink),
+               'verb'          => $activity,
+               'object-type'   => $objtype,
+               'object'        => $obj,
+               'allow_cid'     => $item['allow_cid'],
+               'allow_gid'     => $item['allow_gid'],
+               'deny_cid'      => $item['deny_cid'],
+               'deny_gid'      => $item['deny_gid'],
+               'visible'       => 1,
+               'unseen'        => 1,
+               'last-child'    => 0
+       );
+
+       $new_item_id = item_store($new_item);
+
+       // @todo: Explain this block
+       if (! $item['visible']) {
+               q("UPDATE `item` SET `visible` = 1 WHERE `id` = %d AND `uid` = %d",
                        intval($item['id']),
-                       intval($owner_uid)
+                       intval($item['uid'])
                );
        }
 
-
        // Save the author information for the like in case we need to relay to Diaspora
-       store_diaspora_like_sig($activity, $post_type, $contact, $post_id);
+       Diaspora::store_like_signature($item_contact, $new_item_id);
 
-       $arr['id'] = $post_id;
+       $new_item['id'] = $new_item_id;
 
-       call_hooks('post_local_end', $arr);
+       call_hooks('post_local_end', $new_item);
 
-       proc_run('php',"include/notifier.php","like","$post_id");
+       proc_run(PRIORITY_HIGH, "include/notifier.php", "like", $new_item_id);
 
        return true;
 }
-
-
-
-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;
-
-               // 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)
-                       );
-*/
-               // 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)
-                               $authorsig = base64_encode(rsa_sign($signed_text,$r[0]['prvkey'],'sha256'));
-               }
-
-               if(! isset($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;
-
-
-               // 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;
-}