added keyexchange

1 files changed, 152 insertions, 0 deletions

diff --git a/keyexchange/isakmpd-20041012/if.c b/keyexchange/isakmpd-20041012/if.c
new file mode 100644
index 0000000..b9cf927
--- /dev/null
+++ b/keyexchange/isakmpd-20041012/if.c
@@ -0,0 +1,152 @@
+/*	$OpenBSD: if.c,v 1.22 2004/06/14 09:55:41 ho Exp $	*/
+/*	$EOM: if.c,v 1.12 1999/10/01 13:45:20 niklas Exp $	*/
+
+/*
+ * Copyright (c) 1998, 1999 Niklas Hallqvist.  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.
+ */
+
+/*
+ * This code was written under funding by Ericsson Radio Systems.
+ */
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef HAVE_GETIFADDRS
+#include <ifaddrs.h>
+#endif
+
+#include "sysdep.h"
+
+#include "log.h"
+#include "monitor.h"
+#include "if.h"
+
+#ifndef HAVE_GETIFADDRS
+/* XXX Unsafe if either x or y has side-effects.  */
+#ifndef MAX
+#define MAX(x, y) ((x) > (y) ? (x) : (y))
+#endif
+
+/* Most boxes has less than 16 interfaces, so this might be a good guess.  */
+#define INITIAL_IFREQ_COUNT 16
+
+/*
+ * Get all network interface configurations.
+ * Return 0 if successful, -1 otherwise.
+ */
+int
+siocgifconf(struct ifconf *ifcp)
+{
+	caddr_t	buf, new_buf;
+	int	s, len;
+
+	/* Get a socket to ask for the network interface configurations.  */
+	s = socket(AF_INET, SOCK_DGRAM, 0);
+	if (s == -1) {
+		log_error("siocgifconf: "
+		    "socket (AF_INET, SOCK_DGRAM, 0) failed");
+		return -1;
+	}
+	len = sizeof(struct ifreq) * INITIAL_IFREQ_COUNT;
+	buf = 0;
+	while (1) {
+		/*
+		 * Allocate a larger buffer each time around the loop and get
+		 * the network interfaces configurations into it.
+	         */
+		new_buf = realloc(buf, len);
+		if (!new_buf) {
+			log_error("siocgifconf: realloc (%p, %d) failed", buf,
+			    len);
+			goto err;
+		}
+		ifcp->ifc_len = len;
+		ifcp->ifc_buf = buf = new_buf;
+		if (ioctl(s, SIOCGIFCONF, ifcp) == -1) {
+			log_error("siocgifconf: ioctl (%d, SIOCGIFCONF, ...) "
+			    "failed", s);
+			goto err;
+		}
+
+		/*
+		 * If there is place for another ifreq we can be sure that the
+		 * buffer was big enough, otherwise double the size and try
+		 * again.
+	         */
+		if (len - ifcp->ifc_len >= sizeof(struct ifreq))
+			break;
+		len *= 2;
+	}
+	close(s);
+	return 0;
+
+err:
+	if (buf)
+		free(buf);
+	ifcp->ifc_len = 0;
+	ifcp->ifc_buf = 0;
+	close(s);
+	return -1;
+}
+#endif
+
+int
+if_map(int (*func)(char *, struct sockaddr *, void *), void *arg)
+{
+	int	err = 0;
+
+#ifdef HAVE_GETIFADDRS
+	struct ifaddrs *ifap, *ifa;
+
+	if (getifaddrs(&ifap) < 0)
+		return -1;
+
+	for (ifa = ifap; ifa; ifa = ifa->ifa_next)
+		if ((*func)(ifa->ifa_name, ifa->ifa_addr, arg) == -1)
+			err = -1;
+	freeifaddrs(ifap);
+#else
+	struct ifconf	ifc;
+	struct ifreq	*ifrp;
+	caddr_t		limit, p;
+	size_t		len;
+
+	if (siocgifconf(&ifc))
+		return -1;
+
+	limit = ifc.ifc_buf + ifc.ifc_len;
+	for (p = ifc.ifc_buf; p < limit; p += len) {
+		ifrp = (struct ifreq *)p;
+		if ((*func)(ifrp->ifr_name, &ifrp->ifr_addr, arg) == -1)
+			err = -1;
+		len = sizeof ifrp->ifr_name +
+		    MAX(sysdep_sa_len(&ifrp->ifr_addr), sizeof ifrp->ifr_addr);
+	}
+	free(ifc.ifc_buf);
+#endif
+	return err;
+}