1 files changed, 188 insertions, 0 deletions
diff --git a/plugins/OStatus/actions/groupsalmon.php b/plugins/OStatus/actions/groupsalmon.php
new file mode 100644
index 000000000..29377b5fa
--- /dev/null
+++ b/plugins/OStatus/actions/groupsalmon.php
@@ -0,0 +1,188 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @package OStatusPlugin
+ * @author James Walker <james@status.net>
+ */
+
+if (!defined('STATUSNET')) {
+    exit(1);
+}
+
+class GroupsalmonAction extends SalmonAction
+{
+    var $group = null;
+
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        $id = $this->trimmed('id');
+
+        if (!$id) {
+            $this->clientError(_('No ID.'));
+        }
+
+        $this->group = User_group::staticGet('id', $id);
+
+        if (empty($this->group)) {
+            $this->clientError(_('No such group.'));
+        }
+
+        $oprofile = Ostatus_profile::staticGet('group_id', $id);
+        if ($oprofile) {
+            $this->clientError(_m("Can't accept remote posts for a remote group."));
+        }
+
+        return true;
+    }
+
+    /**
+     * We've gotten a post event on the Salmon backchannel, probably a reply.
+     */
+
+    function handlePost()
+    {
+        switch ($this->act->object->type) {
+        case ActivityObject::ARTICLE:
+        case ActivityObject::BLOGENTRY:
+        case ActivityObject::NOTE:
+        case ActivityObject::STATUS:
+        case ActivityObject::COMMENT:
+            break;
+        default:
+            throw new ClientException("Can't handle that kind of post.");
+        }
+
+        // Notice must be to the attention of this group
+
+        $context = $this->act->context;
+
+        if (empty($context->attention)) {
+            throw new ClientException("Not to the attention of anyone.");
+        } else {
+            $uri = common_local_url('groupbyid', array('id' => $this->group->id));
+            if (!in_array($uri, $context->attention)) {
+                throw new ClientException("Not to the attention of this group.");
+            }
+        }
+
+        $profile = $this->ensureProfile();
+        $this->saveNotice();
+    }
+
+    /**
+     * We've gotten a follow/subscribe notification from a remote user.
+     * Save a subscription relationship for them.
+     */
+
+    /**
+     * Postel's law: consider a "follow" notification as a "join".
+     */
+    function handleFollow()
+    {
+        $this->handleJoin();
+    }
+
+    /**
+     * Postel's law: consider an "unfollow" notification as a "leave".
+     */
+    function handleUnfollow()
+    {
+        $this->handleLeave();
+    }
+
+    /**
+     * A remote user joined our group.
+     * @fixme move permission checks and event call into common code,
+     *        currently we're doing the main logic in joingroup action
+     *        and so have to repeat it here.
+     */
+
+    function handleJoin()
+    {
+        $oprofile = $this->ensureProfile();
+        if (!$oprofile) {
+            $this->clientError(_m("Can't read profile to set up group membership."));
+        }
+        if ($oprofile->isGroup()) {
+            $this->clientError(_m("Groups can't join groups."));
+        }
+
+        common_log(LOG_INFO, "Remote profile {$oprofile->uri} joining local group {$this->group->nickname}");
+        $profile = $oprofile->localProfile();
+
+        if ($profile->isMember($this->group)) {
+            // Already a member; we'll take it silently to aid in resolving
+            // inconsistencies on the other side.
+            return true;
+        }
+
+        if (Group_block::isBlocked($this->group, $profile)) {
+            $this->clientError(_('You have been blocked from that group by the admin.'), 403);
+            return false;
+        }
+
+        try {
+            // @fixme that event currently passes a user from main UI
+            // Event should probably move into Group_member::join
+            // and take a Profile object.
+            //
+            //if (Event::handle('StartJoinGroup', array($this->group, $profile))) {
+                Group_member::join($this->group->id, $profile->id);
+                //Event::handle('EndJoinGroup', array($this->group, $profile));
+            //}
+        } catch (Exception $e) {
+            $this->serverError(sprintf(_m('Could not join remote user %1$s to group %2$s.'),
+                                       $oprofile->uri, $this->group->nickname));
+        }
+    }
+
+    /**
+     * A remote user left our group.
+     */
+
+    function handleLeave()
+    {
+        $oprofile = $this->ensureProfile();
+        if (!$oprofile) {
+            $this->clientError(_m("Can't read profile to cancel group membership."));
+        }
+        if ($oprofile->isGroup()) {
+            $this->clientError(_m("Groups can't join groups."));
+        }
+
+        common_log(LOG_INFO, "Remote profile {$oprofile->uri} leaving local group {$this->group->nickname}");
+        $profile = $oprofile->localProfile();
+
+        try {
+            // @fixme event needs to be refactored as above
+            //if (Event::handle('StartLeaveGroup', array($this->group, $profile))) {
+                Group_member::leave($this->group->id, $profile->id);
+                //Event::handle('EndLeaveGroup', array($this->group, $profile));
+            //}
+        } catch (Exception $e) {
+            $this->serverError(sprintf(_m('Could not remove remote user %1$s from group %2$s.'),
+                                       $oprofile->uri, $this->group->nickname));
+            return;
+        }
+    }
+
+}