Index: freeswan/klips/net/ipsec/alg/ipsec_alg_null.c
diff -u /dev/null freeswan/klips/net/ipsec/alg/ipsec_alg_null.c:1.1.2.3
--- /dev/null	Fri Jul 12 16:03:48 2002
+++ freeswan/klips/net/ipsec/alg/ipsec_alg_null.c	Tue May 21 13:25:53 2002
@@ -0,0 +1,122 @@
+/*
+ * ipsec_alg NULL cipher stubs
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ * 
+ * $Id: ipsec_alg_null.c,v 1.1.2.3 2002/05/21 16:25:53 jjo Exp $
+ * 
+ * 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 <linux/config.h>
+#include <linux/version.h>
+
+/*	
+ *	special case: ipsec core modular with this static algo inside:
+ *	must avoid MODULE magic for this file
+ */
+#if CONFIG_IPSEC_MODULE && CONFIG_IPSEC_ALG_NULL
+#undef MODULE
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/string.h>
+
+/* Check if __exit is defined, if not null it */
+#ifndef __exit
+#define __exit
+#endif
+
+/*	Low freeswan header coupling	*/
+#include "ipsec_alg.h"
+
+#define ESP_NULL		11	/* from ipsec drafts */
+#define ESP_NULL_BLK_LEN	4
+
+MODULE_AUTHOR("JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>");
+static int debug=0;
+MODULE_PARM(debug, "i");
+static int test=0;
+MODULE_PARM(test, "i");
+
+typedef int null_context;
+
+struct null_eks{
+	null_context null_ctx;
+};
+static int _null_set_key(__u8 * key_e, const __u8 * key, int keysize) {
+	null_context *ctx=&((struct null_eks*)key_e)->null_ctx;
+	if (debug > 0)
+		printk(KERN_DEBUG "klips_debug:_null_set_key:"
+				"key_e=%p key=%p keysize=%d\n",
+				key_e, key, keysize);
+	*ctx = 1;
+	return 0;
+}
+static int _null_cbc_encrypt(__u8 * key_e, __u8 * in, __u8 * out, int ilen, const __u8 * iv, int encrypt) {
+	null_context *ctx=&((struct null_eks*)key_e)->null_ctx;
+	if (debug > 0)
+		printk(KERN_DEBUG "klips_debug:_null_cbc_encrypt:"
+				"key_e=%p in=%p out=%p ilen=%d iv=%p encrypt=%d\n",
+				key_e, in, out, ilen, iv, encrypt);
+	(*ctx)++;
+	return ilen;
+}
+static struct ipsec_alg_enc ipsec_alg_NULL = {
+	ixt_version:	IPSEC_ALG_VERSION,
+	ixt_module:	THIS_MODULE,
+	ixt_refcnt:	ATOMIC_INIT(0),
+	ixt_alg_type:	IPSEC_ALG_TYPE_ENCRYPT,
+	ixt_alg_id: 	ESP_NULL,
+	ixt_name: 	"null",
+	ixt_blocksize:	ESP_NULL_BLK_LEN, 
+	ixt_keyminbits:	0,
+	ixt_keymaxbits:	0,
+	ixt_e_keylen:	0,
+	ixt_e_ctx_size:	sizeof(null_context),
+	ixt_e_set_key:	_null_set_key,
+	ixt_e_cbc_encrypt:_null_cbc_encrypt,
+};
+	
+IPSEC_ALG_MODULE_INIT(ipsec_null_init)
+{
+	int ret, test_ret;
+	ret=register_ipsec_alg_enc(&ipsec_alg_NULL);
+	printk(__FUNCTION__ "(alg_type=%d alg_id=%d name=%s): ret=%d\n", 
+			ipsec_alg_NULL.ixt_alg_type, 
+			ipsec_alg_NULL.ixt_alg_id, 
+			ipsec_alg_NULL.ixt_name, 
+			ret);
+	if (ret==0 && test) {
+		test_ret=ipsec_alg_test(
+				ipsec_alg_NULL.ixt_alg_type,
+				ipsec_alg_NULL.ixt_alg_id, 
+				test);
+		printk(__FUNCTION__ "(alg_type=%d alg_id=%d): test_ret=%d\n", 
+				ipsec_alg_NULL.ixt_alg_type, 
+				ipsec_alg_NULL.ixt_alg_id, 
+				test_ret);
+	}
+	return ret;
+}
+IPSEC_ALG_MODULE_EXIT(ipsec_null_fini)
+{
+	unregister_ipsec_alg_enc(&ipsec_alg_NULL);
+	return;
+}
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
Index: freeswan/klips/net/ipsec/alg/Makefile.alg_null
diff -u /dev/null freeswan/klips/net/ipsec/alg/Makefile.alg_null:1.1.2.1
--- /dev/null	Fri Jul 12 16:03:48 2002
+++ freeswan/klips/net/ipsec/alg/Makefile.alg_null	Mon Apr 15 12:13:42 2002
@@ -0,0 +1,13 @@
+MOD_NULL := ipsec_null.o
+
+ALG_MODULES += $(MOD_NULL)
+ALG_SUBDIRS += 
+
+obj-$(CONFIG_IPSEC_ALG_NULL) += ipsec_null.o
+static_init-func-$(CONFIG_IPSEC_ALG_NULL)+= ipsec_null_init
+alg_obj-$(CONFIG_IPSEC_ALG_NULL) += ipsec_alg_null.o
+
+NULL_OBJS=ipsec_alg_null.o
+ipsec_null.o: $(NULL_OBJS)
+	$(LD) -r $(NULL_OBJS) -o $@
+
Index: freeswan/klips/net/ipsec/alg/Config.alg_null.in
diff -u /dev/null freeswan/klips/net/ipsec/alg/Config.alg_null.in:1.1.2.1
--- /dev/null	Fri Jul 12 16:03:48 2002
+++ freeswan/klips/net/ipsec/alg/Config.alg_null.in	Mon Apr 15 12:13:42 2002
@@ -0,0 +1,3 @@
+if [ "$CONFIG_IPSEC_ALG" = "y" ]; then
+  tristate '        NULL encryption algorithm' CONFIG_IPSEC_ALG_NULL
+fi
--- freeswan/klips/net/ipsec/alg/Config.in	Sun Dec 16 10:24:55 2001
+++ freeswan/klips/net/ipsec/alg/Config.in	Sun Dec 16 10:24:52 2001
@@ -1000,0 +1001 @@
+source net/ipsec/alg/Config.alg_null.in