1 files changed, 93 insertions, 0 deletions
diff --git a/plugins/OStatus/lib/salmon.php b/plugins/OStatus/lib/salmon.php
new file mode 100644
index 000000000..9d4359f74
--- /dev/null
+++ b/plugins/OStatus/lib/salmon.php
@@ -0,0 +1,93 @@
+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * A sample module to show best practices for StatusNet plugins
+ *
+ * PHP version 5
+ *
+ * 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   StatusNet
+ * @author    James Walker <james@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link      http://status.net/
+ */
+class Salmon
+{
+    /**
+     * Sign and post the given Atom entry as a Salmon message.
+     *
+     * @fixme pass through the actor for signing?
+     *
+     * @param string $endpoint_uri
+     * @param string $xml
+     * @return boolean success
+     */
+    public function post($endpoint_uri, $xml)
+    {
+        if (empty($endpoint_uri)) {
+            return false;
+        }
+
+        if (!common_config('ostatus', 'skip_signatures')) {
+            $xml = $this->createMagicEnv($xml);
+        }
+
+        $headers = array('Content-Type: application/atom+xml');
+
+        try {
+            $client = new HTTPClient();
+            $client->setBody($xml);
+            $response = $client->post($endpoint_uri, $headers);
+        } catch (HTTP_Request2_Exception $e) {
+            common_log(LOG_ERR, "Salmon post to $endpoint_uri failed: " . $e->getMessage());
+            return false;
+        }
+        if ($response->getStatus() != 200) {
+            common_log(LOG_ERR, "Salmon at $endpoint_uri returned status " .
+                $response->getStatus() . ': ' . $response->getBody());
+            return false;
+        }
+        return true;
+    }
+
+    public function createMagicEnv($text)
+    {
+        $magic_env = new MagicEnvelope();
+
+        // TODO: Should probably be getting the signer uri as an argument?
+        $signer_uri = $magic_env->getAuthor($text);
+
+        try {
+            $env = $magic_env->signMessage($text, 'application/atom+xml', $signer_uri);
+        } catch (Exception $e) {
+            common_log(LOG_ERR, "Salmon signing failed: ". $e->getMessage());
+            return $text;
+        }
+        return $magic_env->unfold($env);
+    }
+
+
+    public function verifyMagicEnv($dom)
+    {
+        $magic_env = new MagicEnvelope();
+        
+        $env = $magic_env->fromDom($dom);
+
+        return $magic_env->verify($env);
+    }
+}