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authorOthmar Gsenger <otti@anytun.org>2007-07-30 19:37:53 +0000
committerOthmar Gsenger <otti@anytun.org>2007-07-30 19:37:53 +0000
commit6585e5ad764ee2414d9b01f30784b6549bc8f58e (patch)
tree4ea258d5327838363dc3ac66d09ecc94686f3e26 /keyexchange/isakmpd-20041012/sysdep/linux/sysdep.c
parentripe requests, final (diff)
added keyexchange
Diffstat (limited to 'keyexchange/isakmpd-20041012/sysdep/linux/sysdep.c')
-rw-r--r--keyexchange/isakmpd-20041012/sysdep/linux/sysdep.c226
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