Added plugin stub for AF_ALG

configure.in

@@ -86,6 +86,7 @@ ARG_DISBL_SET([dnskey],         [disable DNS RR key decoding plugin.])
 ARG_DISBL_SET([pem],            [disable PEM decoding plugin.])
 ARG_DISBL_SET([hmac],           [disable HMAC crypto implementation plugin.])
 ARG_DISBL_SET([xcbc],           [disable xcbc crypto implementation plugin.])
+ARG_ENABL_SET([af-alg],         [enable AF_ALG crypto interface to Linux Crypto API.])
 ARG_ENABL_SET([test-vectors],   [enable plugin providing crypto test vectors.])
 ARG_ENABL_SET([mysql],          [enable MySQL database support. Requires libmysqlclient_r.])
 ARG_ENABL_SET([sqlite],         [enable SQLite database support. Requires libsqlite3.])
@@ -735,6 +736,7 @@ ADD_PLUGIN([hmac],                 [s libcharon pluto scripts])
 ADD_PLUGIN([ctr],                  [s libcharon scripts])
 ADD_PLUGIN([ccm],                  [s libcharon scripts])
 ADD_PLUGIN([gcm],                  [s libcharon scripts])
+ADD_PLUGIN([af-alg],               [s libcharon pluto openac scepclient pki scripts medsrv])
 ADD_PLUGIN([xauth],                [p pluto])
 ADD_PLUGIN([attr],                 [h libcharon pluto])
 ADD_PLUGIN([attr-sql],             [h libcharon pluto])
@@ -836,6 +838,7 @@ AM_CONDITIONAL(USE_PKCS11, test x$pkcs11 = xtrue)
 AM_CONDITIONAL(USE_CTR, test x$ctr = xtrue)
 AM_CONDITIONAL(USE_CCM, test x$ccm = xtrue)
 AM_CONDITIONAL(USE_GCM, test x$gcm = xtrue)
+AM_CONDITIONAL(USE_AF_ALG, test x$af_alg = xtrue)
 
 dnl charon plugins
 dnl ==============
@@ -978,6 +981,7 @@ AC_OUTPUT(
 	src/libstrongswan/plugins/ctr/Makefile
 	src/libstrongswan/plugins/ccm/Makefile
 	src/libstrongswan/plugins/gcm/Makefile
+	src/libstrongswan/plugins/af_alg/Makefile
 	src/libstrongswan/plugins/test_vectors/Makefile
 	src/libhydra/Makefile
 	src/libhydra/plugins/attr/Makefile

src/libstrongswan/Makefile.am

@@ -136,6 +136,13 @@ else
 SUBDIRS = .
 endif
 
+if USE_AF_ALG
+  SUBDIRS += plugins/af_alg
+if MONOLITHIC
+  libstrongswan_la_LIBADD += plugins/af_alg/libstrongswan-af-alg.la
+endif
+endif
+
 if USE_AES
   SUBDIRS += plugins/aes
 if MONOLITHIC

src/libstrongswan/plugins/af_alg/Makefile.am

@@ -0,0 +1,15 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-af-alg.la
+else
+plugin_LTLIBRARIES = libstrongswan-af-alg.la
+endif
+
+libstrongswan_af_alg_la_SOURCES = \
+	af_alg_plugin.h af_alg_plugin.c
+
+libstrongswan_af_alg_la_LDFLAGS = -module -avoid-version

src/libstrongswan/plugins/af_alg/af_alg_plugin.c

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010 Martin Willi
+ * Copyright (C) 2010 revosec AG
+ *
+ * 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 "af_alg_plugin.h"
+
+#include <library.h>
+
+typedef struct private_af_alg_plugin_t private_af_alg_plugin_t;
+
+/**
+ * private data of af_alg_plugin
+ */
+struct private_af_alg_plugin_t {
+
+	/**
+	 * public functions
+	 */
+	af_alg_plugin_t public;
+};
+
+METHOD(plugin_t, destroy, void,
+	private_af_alg_plugin_t *this)
+{
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *af_alg_plugin_create()
+{
+	private_af_alg_plugin_t *this;
+
+	INIT(this,
+		.public = {
+			.plugin = {
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	return &this->public.plugin;
+}

src/libstrongswan/plugins/af_alg/af_alg_plugin.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2010 Martin Willi
+ * Copyright (C) 2010 revosec AG
+ *
+ * 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 af_alg af_alg
+ * @ingroup plugins
+ *
+ * @defgroup af_alg_plugin af_alg_plugin
+ * @{ @ingroup af_alg
+ */
+
+#ifndef AF_ALG_PLUGIN_H_
+#define AF_ALG_PLUGIN_H_
+
+#include <plugins/plugin.h>
+
+typedef struct af_alg_plugin_t af_alg_plugin_t;
+
+/**
+ * Plugin providing the AF_ALG interface to the Linux Crypto API.
+ */
+struct af_alg_plugin_t {
+
+	/**
+	 * Implements plugin interface.
+	 */
+	plugin_t plugin;
+};
+
+#endif /** AF_ALG_PLUGIN_H_ @}*/