Added unbound plugin implementing the resolver interface using libunbound

6 files changed, 234 insertions, 0 deletions

diff --git a/src/libstrongswan/Makefile.am b/src/libstrongswan/Makefile.am
index b0dd86223..08be77c89 100644
--- a/src/libstrongswan/Makefile.am
+++ b/src/libstrongswan/Makefile.am
@@ -326,6 +326,13 @@ if MONOLITHIC
 endif
 endif
 
+if USE_UNBOUND
+  SUBDIRS += plugins/unbound
+if MONOLITHIC
+  libstrongswan_la_LIBADD += plugins/unbound/libstrongswan-unbound.la
+endif
+endif
+
 if USE_SOUP
   SUBDIRS += plugins/soup
 if MONOLITHIC
diff --git a/src/libstrongswan/plugins/unbound/Makefile.am b/src/libstrongswan/plugins/unbound/Makefile.am
new file mode 100644
index 000000000..3bb7af6e2
--- /dev/null
+++ b/src/libstrongswan/plugins/unbound/Makefile.am
@@ -0,0 +1,16 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-unbound.la
+else
+plugin_LTLIBRARIES = libstrongswan-unbound.la
+endif
+
+libstrongswan_unbound_la_SOURCES = \
+	unbound_plugin.h unbound_plugin.c unbound_resolver.c unbound_resolver.h
+
+libstrongswan_unbound_la_LDFLAGS = -module -avoid-version
+libstrongswan_unbound_la_LIBADD  = -lunbound -lldns
diff --git a/src/libstrongswan/plugins/unbound/unbound_plugin.c b/src/libstrongswan/plugins/unbound/unbound_plugin.c
new file mode 100644
index 000000000..90b95330a
--- /dev/null
+++ b/src/libstrongswan/plugins/unbound/unbound_plugin.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2011-2012 Reto Guadagnini
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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 General Public License
+ * for more details.
+ */
+
+#include "unbound_plugin.h"
+
+#include <library.h>
+#include "unbound_resolver.h"
+
+typedef struct private_unbound_plugin_t private_unbound_plugin_t;
+
+/**
+ * private data of unbound_plugin
+ */
+struct private_unbound_plugin_t {
+
+	/**
+	 * public functions
+	 */
+	unbound_plugin_t public;
+};
+
+METHOD(plugin_t, get_name, char*,
+	private_unbound_plugin_t *this)
+{
+	return "unbound";
+}
+
+METHOD(plugin_t, destroy, void,
+	private_unbound_plugin_t *this)
+{
+	lib->resolver->remove_resolver(lib->resolver, unbound_resolver_create);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *unbound_plugin_create()
+{
+	private_unbound_plugin_t *this;
+
+	INIT(this,
+		.public = {
+			.plugin = {
+				.get_name = _get_name,
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	lib->resolver->add_resolver(lib->resolver, unbound_resolver_create);
+
+	return &this->public.plugin;
+}
diff --git a/src/libstrongswan/plugins/unbound/unbound_plugin.h b/src/libstrongswan/plugins/unbound/unbound_plugin.h
new file mode 100644
index 000000000..1f0d36454
--- /dev/null
+++ b/src/libstrongswan/plugins/unbound/unbound_plugin.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011-2012 Reto Guadagnini
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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 General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup unbound_p unbound
+ * @ingroup plugins
+ *
+ * @defgroup unbound_plugin unbound_plugin
+ * @{ @ingroup unbound_p
+ */
+
+#ifndef unbound_PLUGIN_H_
+#define unbound_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct unbound_plugin_t unbound_plugin_t;
+
+/**
+ * Plugin implementing the resolver interface using the libunbound DNS library.
+ */
+struct unbound_plugin_t {
+
+	/**
+	 * implements plugin interface
+	 */
+	plugin_t plugin;
+};
+
+#endif /** unbound_PLUGIN_H_ @}*/
diff --git a/src/libstrongswan/plugins/unbound/unbound_resolver.c b/src/libstrongswan/plugins/unbound/unbound_resolver.c
new file mode 100644
index 000000000..817067d1c
--- /dev/null
+++ b/src/libstrongswan/plugins/unbound/unbound_resolver.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2011-2012 Reto Guadagnini
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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 General Public License
+ * for more details.
+ */
+
+#include <string.h>
+
+#include <library.h>
+#include <utils/debug.h>
+
+#include "unbound_resolver.h"
+
+typedef struct private_resolver_t private_resolver_t;
+
+/**
+ * private data of a unbound_resolver_t object.
+ */
+struct private_resolver_t {
+
+	/**
+	 * Public data
+	 */
+	resolver_t public;
+};
+
+/**
+ * query method implementation
+ */
+METHOD(resolver_t, query, resolver_response_t*,
+	private_resolver_t *this, char *domain, rr_class_t rr_class,
+	rr_type_t rr_type)
+{
+	/* TODO: Implement */
+	return NULL;
+}
+
+/**
+ * destroy method implementation
+ */
+METHOD(resolver_t, destroy, void,
+	private_resolver_t *this)
+{
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+resolver_t *unbound_resolver_create()
+{
+	private_resolver_t *this;
+
+	INIT(this,
+		.public = {
+			.query = _query,
+			.destroy = _destroy,
+		},
+	);
+
+	/* TODO: Implement */
+	destroy(this);
+	return NULL;
+}
+
diff --git a/src/libstrongswan/plugins/unbound/unbound_resolver.h b/src/libstrongswan/plugins/unbound/unbound_resolver.h
new file mode 100644
index 000000000..659906c74
--- /dev/null
+++ b/src/libstrongswan/plugins/unbound/unbound_resolver.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2011-2012 Reto Guadagnini
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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 General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup unbound_resolver unbound_resolver
+ * @{ @ingroup unbound_p
+ */
+
+#ifndef unbound_RESOLVER_H_
+#define unbound_RESOLVER_H_
+
+/**
+ * Create a resolver_t instance.
+ */
+resolver_t *unbound_resolver_create();
+
+#endif /** LIBunbound_RESOLVER_H_ @}*/