added keyexchange

1 files changed, 226 insertions, 0 deletions

diff --git a/keyexchange/isakmpd-20041012/sysdep/linux/sysdep.c b/keyexchange/isakmpd-20041012/sysdep/linux/sysdep.c
new file mode 100644
index 0000000..fc3b362
--- /dev/null
+++ b/keyexchange/isakmpd-20041012/sysdep/linux/sysdep.c
@@ -0,0 +1,226 @@
+/*	$OpenBSD: sysdep.c,v 1.16 2004/08/10 15:59:10 ho Exp $	*/
+
+/*
+ * Copyright (c) 1998, 1999 Niklas Hallqvist.  All rights reserved.
+ * Copyright (c) 2003 Thomas Walpuski.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sysdep.h"
+
+#include "util.h"
+
+#ifdef NEED_SYSDEP_APP
+#include "app.h"
+#include "conf.h"
+#include "ipsec.h"
+#include <linux/pfkeyv2.h>
+#include <linux/ipsec.h>
+
+#ifdef USE_PF_KEY_V2
+#include "pf_key_v2.h"
+#define KEY_API(x) pf_key_v2_##x
+#endif
+
+#endif /* NEED_SYSDEP_APP */
+#include "log.h"
+
+extern char *__progname;
+
+/*
+ * An as strong as possible random number generator, reverting to a
+ * deterministic pseudo-random one if regrand is set.
+ */
+u_int32_t
+sysdep_random ()
+{
+  return arc4random();
+}
+
+/* Return the basename of the command used to invoke us.  */
+char *
+sysdep_progname ()
+{
+  return __progname;
+}
+
+/* Return the length of the sockaddr struct.  */
+u_int8_t
+sysdep_sa_len (struct sockaddr *sa)
+{
+  switch (sa->sa_family)
+    {
+    case AF_INET:
+      return sizeof (struct sockaddr_in);
+    case AF_INET6:
+      return sizeof (struct sockaddr_in6);
+    default:
+      log_print ("sysdep_sa_len: unknown sa family %d", sa->sa_family);
+    }
+  return sizeof (struct sockaddr_in);
+}
+
+/* As regress/ use this file I protect the sysdep_app_* stuff like this.  */
+#ifdef NEED_SYSDEP_APP
+/*
+ * Prepare the application we negotiate SAs for (i.e. the IPsec stack)
+ * for communication.  We return a file descriptor useable to select(2) on.
+ */
+int
+sysdep_app_open ()
+{
+  return KEY_API(open) ();
+}
+
+/*
+ * When select(2) has noticed our application needs attendance, this is what
+ * gets called.  FD is the file descriptor causing the alarm.
+ */
+void
+sysdep_app_handler (int fd)
+{
+  KEY_API (handler) (fd);
+}
+
+/* Check that the connection named NAME is active, or else make it active.  */
+void
+sysdep_connection_check (char *name)
+{
+  KEY_API (connection_check) (name);
+}
+
+/*
+ * Generate a SPI for protocol PROTO and the source/destination pair given by
+ * SRC, SRCLEN, DST & DSTLEN.  Stash the SPI size in SZ.
+ */
+u_int8_t *
+sysdep_ipsec_get_spi (size_t *sz, u_int8_t proto, struct sockaddr *src,
+		      struct sockaddr *dst, u_int32_t seq)
+{
+  if (app_none)
+    {
+      *sz = IPSEC_SPI_SIZE;
+      /* XXX should be random instead I think.  */
+      return strdup ("\x12\x34\x56\x78");
+    }
+  return KEY_API (get_spi) (sz, proto, src, dst, seq);
+}
+
+struct sa_kinfo *
+sysdep_ipsec_get_kernel_sa(u_int8_t *spi, size_t spi_sz, u_int8_t proto,
+    struct sockaddr *dst)
+{
+	if (app_none)
+		return 0;
+	/* XXX return KEY_API(get_kernel_sa)(spi, spi_sz, proto, dst); */
+	return 0;
+}
+
+/* Force communication on socket FD to go in the clear.  */
+int
+sysdep_cleartext (int fd, int af)
+{
+  struct sadb_x_policy pol_in = {
+    SADB_UPDATE,
+    SADB_EXT_SENSITIVITY,
+    IPSEC_POLICY_BYPASS,
+    IPSEC_DIR_INBOUND,
+    0,
+    0,
+    0
+  };
+  struct sadb_x_policy pol_out = {
+    SADB_UPDATE,
+    SADB_EXT_SENSITIVITY,
+    IPSEC_POLICY_BYPASS,
+    IPSEC_DIR_OUTBOUND,
+    0,
+    0,
+    0
+  };
+
+  if (app_none)
+    return 0;
+
+  if (!(af == AF_INET || af == AF_INET6))
+    { 
+      log_print ("sysdep_cleartext: unsupported protocol family %d", af);
+      return -1;
+    }
+
+  if (setsockopt (fd, af == AF_INET ? IPPROTO_IP : IPPROTO_IPV6,
+          af == AF_INET ? IP_IPSEC_POLICY : IPV6_IPSEC_POLICY,
+          &pol_in, sizeof pol_in) < 0 ||
+      setsockopt (fd, af == AF_INET ? IPPROTO_IP : IPPROTO_IPV6,
+          af == AF_INET ? IP_IPSEC_POLICY : IPV6_IPSEC_POLICY,
+          &pol_out, sizeof pol_out) < 0)
+    { 
+      log_error ("sysdep_cleartext: "
+         "setsockopt (%d, IPPROTO_IP%s, IP%s_IPSEC_POLICY, ...) "
+         "failed", fd, af == AF_INET ? "" : "V6",
+         af == AF_INET ? "" : "V6");
+      return -1;
+    }
+  return 0;
+}
+
+int
+sysdep_ipsec_delete_spi (struct sa *sa, struct proto *proto, int incoming)
+{
+  if (app_none)
+    return 0;
+  return KEY_API (delete_spi) (sa, proto, incoming);
+}
+
+int
+sysdep_ipsec_enable_sa (struct sa *sa, struct sa *isakmp_sa)
+{
+  if (app_none)
+    return 0;
+  return KEY_API (enable_sa) (sa, isakmp_sa);
+}
+
+int
+sysdep_ipsec_group_spis (struct sa *sa, struct proto *proto1,
+			 struct proto *proto2, int incoming)
+{
+  if (app_none)
+    return 0;
+  return KEY_API (group_spis) (sa, proto1, proto2, incoming);
+}
+
+int
+sysdep_ipsec_set_spi (struct sa *sa, struct proto *proto, int incoming,
+		      struct sa *isakmp_sa)
+{
+  if (app_none)
+    return 0;
+  return KEY_API (set_spi) (sa, proto, incoming, isakmp_sa);
+}
+#endif