From dd36c2de23dbdb30f333be1f9d5292d62363b0c8 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 19 Nov 2009 20:55:38 -0800
Subject: Initial functional version of feed subscription plugin, currently
 supporting only PuSH-enabled feeds.

---
 plugins/FeedSub/actions/feedsubcallback.php | 100 ++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 plugins/FeedSub/actions/feedsubcallback.php

(limited to 'plugins/FeedSub/actions/feedsubcallback.php')

diff --git a/plugins/FeedSub/actions/feedsubcallback.php b/plugins/FeedSub/actions/feedsubcallback.php
new file mode 100644
index 000000000..0c4280c1f
--- /dev/null
+++ b/plugins/FeedSub/actions/feedsubcallback.php
@@ -0,0 +1,100 @@
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2009, 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 FeedSubPlugin
+ * @maintainer Brion Vibber <brion@status.net>
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
+
+
+class FeedSubCallbackAction extends Action
+{
+    function handle()
+    {
+        parent::handle();
+        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+            $this->handlePost();
+        } else {
+            $this->handleGet();
+        }
+    }
+    
+    /**
+     * Handler for POST content updates from the hub
+     */
+    function handlePost()
+    {
+        $feedid = $this->arg('feed');
+        common_log(LOG_INFO, "POST for feed id $feedid");
+        if (!$feedid) {
+            throw new ServerException('Empty or invalid feed id', 400);
+        }
+
+        $feedinfo = Feedinfo::staticGet('id', $feedid);
+        if (!$feedinfo) {
+            throw new ServerException('Unknown feed id ' . $feedid, 400);
+        }
+        
+        $post = file_get_contents('php://input');
+        $feedinfo->postUpdates($post);
+    }
+    
+    /**
+     * Handler for GET verification requests from the hub
+     */
+    function handleGet()
+    {
+        $mode = $this->arg('hub_mode');
+        $topic = $this->arg('hub_topic');
+        $challenge = $this->arg('hub_challenge');
+        $lease_seconds = $this->arg('hub_lease_seconds');
+        $verify_token = $this->arg('hub_verify_token');
+        
+        if ($mode != 'subscribe' && $mode != 'unsubscribe') {
+            common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with mode \"$mode\"");
+            throw new ServerException("Bogus hub callback: bad mode", 404);
+        }
+        
+        $feedinfo = Feedinfo::staticGet('feeduri', $topic);
+        if (!$feedinfo) {
+            common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback for unknown feed $topic");
+            throw new ServerException("Bogus hub callback: unknown feed", 404);
+        }
+
+        # Can't currently set the token in our sub api
+        #if ($feedinfo->verify_token !== $verify_token) {
+        #    common_log(LOG_WARNING, __METHOD__ . ": bogus hub callback with bad token \"$verify_token\" for feed $topic");
+        #    throw new ServerError("Bogus hub callback: bad token", 404);
+        #}
+        
+        // OK!
+        common_log(LOG_INFO, __METHOD__ . ': sub confirmed');
+        $feedinfo->sub_start = common_sql_date(time());
+        if ($lease_seconds > 0) {
+            $feedinfo->sub_end = common_sql_date(time() + $lease_seconds);
+        } else {
+            $feedinfo->sub_end = null;
+        }
+        $feedinfo->update();
+        
+        print $challenge;
+    }
+}
-- 
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