add no_iframes plugin

plugins/no_iframes/init.php

@@ -0,0 +1,29 @@
+<?php
+class No_Iframes extends Plugin {
+	private $host;
+
+	function about() {
+		return array(1.0,
+			"Remove embedded iframes",
+			"fox");
+	}
+
+	function init($host) {
+		$this->host = $host;
+
+		$host->add_hook($host::HOOK_SANITIZE, $this);
+	}
+
+	function hook_sanitize($doc, $site_url, $allowed_elements, $disallowed_attributes) {
+
+		$allowed_elements = array_diff($allowed_elements, array("iframe"));
+
+		return array($doc, $allowed_elements, $disallowed_attributes);
+	}
+
+	function api_version() {
+		return 2;
+	}
+
+}
+?>