Rename ifcarp.c to carp.c

1 files changed, 228 insertions, 0 deletions

diff --git a/sbin/ifconfig/carp.c b/sbin/ifconfig/carp.c
new file mode 100644
index 0000000..2c58fcb
--- /dev/null
+++ b/sbin/ifconfig/carp.c
@@ -0,0 +1,228 @@
+/*	$FreeBSD$ */
+/*	from $OpenBSD: ifconfig.c,v 1.82 2003/10/19 05:43:35 mcbride Exp $ */
+
+/*
+ * Copyright (c) 2002 Michael Shalayeff. All rights reserved.
+ * Copyright (c) 2003 Ryan McBride. 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 OR HIS RELATIVES 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 MIND, 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/param.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <netinet/in.h>
+#include <netinet/in_var.h>
+#include <netinet/ip_carp.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <err.h>
+#include <errno.h>
+
+#include "ifconfig.h"
+
+static const char *carp_states[] = { CARP_STATES };
+
+static void carp_status(int s);
+static void setcarp_vhid(const char *, int, int, const struct afswtch *rafp);
+static void setcarp_callback(int, void *);
+static void setcarp_advbase(const char *,int, int, const struct afswtch *rafp);
+static void setcarp_advskew(const char *, int, int, const struct afswtch *rafp);
+static void setcarp_passwd(const char *, int, int, const struct afswtch *rafp);
+
+static int carpr_vhid = -1;
+static int carpr_advskew = -1;
+static int carpr_advbase = -1;
+static int carpr_state = -1;
+static unsigned char const *carpr_key;
+
+static void
+carp_status(int s)
+{
+	struct carpreq carpr[CARP_MAXVHID];
+	int i;
+
+	bzero(carpr, sizeof(struct carpreq) * CARP_MAXVHID);
+	carpr[0].carpr_count = CARP_MAXVHID;
+	ifr.ifr_data = (caddr_t)&carpr;
+
+	if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1)
+		return;
+
+	for (i = 0; i < carpr[0].carpr_count; i++) {
+		printf("\tcarp: %s vhid %d advbase %d advskew %d",
+		    carp_states[carpr[i].carpr_state], carpr[i].carpr_vhid,
+		    carpr[i].carpr_advbase, carpr[i].carpr_advskew);
+		if (printkeys && carpr[i].carpr_key[0] != '\0')
+			printf(" key \"%s\"\n", carpr[i].carpr_key);
+		else
+			printf("\n");
+	}
+}
+
+static void
+setcarp_vhid(const char *val, int d, int s, const struct afswtch *afp)
+{
+
+	carpr_vhid = atoi(val);
+
+	if (carpr_vhid <= 0 || carpr_vhid > CARP_MAXVHID)
+		errx(1, "vhid must be greater than 0 and less than %u",
+		    CARP_MAXVHID);
+
+	switch (afp->af_af) {
+#ifdef INET
+	case AF_INET:
+	    {
+		struct in_aliasreq *ifra;
+
+		ifra = (struct in_aliasreq *)afp->af_addreq;
+		ifra->ifra_vhid = carpr_vhid;
+		break;
+	    }
+#endif
+#ifdef INET6
+	case AF_INET6:
+	    {
+		struct in6_aliasreq *ifra;
+
+		ifra = (struct in6_aliasreq *)afp->af_addreq;
+		ifra->ifra_vhid = carpr_vhid;
+		break;
+	    }
+#endif
+	default:
+		errx(1, "%s doesn't support carp(4)", afp->af_name);
+	}
+
+	callback_register(setcarp_callback, NULL);
+}
+
+static void
+setcarp_callback(int s, void *arg __unused)
+{
+	struct carpreq carpr;
+
+	bzero(&carpr, sizeof(struct carpreq));
+	carpr.carpr_vhid = carpr_vhid;
+	carpr.carpr_count = 1;
+	ifr.ifr_data = (caddr_t)&carpr;
+
+	if (ioctl(s, SIOCGVH, (caddr_t)&ifr) == -1 && errno != ENOENT)
+		err(1, "SIOCGVH");
+
+	if (carpr_key != NULL)
+		/* XXX Should hash the password into the key here? */
+		strlcpy(carpr.carpr_key, carpr_key, CARP_KEY_LEN);
+	if (carpr_advskew > -1)
+		carpr.carpr_advskew = carpr_advskew;
+	if (carpr_advbase > -1)
+		carpr.carpr_advbase = carpr_advbase;
+	if (carpr_state > -1)
+		carpr.carpr_state = carpr_state;
+
+	if (ioctl(s, SIOCSVH, (caddr_t)&ifr) == -1)
+		err(1, "SIOCSVH");
+}
+
+static void
+setcarp_passwd(const char *val, int d, int s, const struct afswtch *afp)
+{
+
+	if (carpr_vhid == -1)
+		errx(1, "passwd requires vhid");
+
+	carpr_key = val;
+}
+
+static void
+setcarp_advskew(const char *val, int d, int s, const struct afswtch *afp)
+{
+
+	if (carpr_vhid == -1)
+		errx(1, "advskew requires vhid");
+
+	carpr_advskew = atoi(val);
+}
+
+static void
+setcarp_advbase(const char *val, int d, int s, const struct afswtch *afp)
+{
+
+	if (carpr_vhid == -1)
+		errx(1, "advbase requires vhid");
+
+	carpr_advbase = atoi(val);
+}
+
+static void
+setcarp_state(const char *val, int d, int s, const struct afswtch *afp)
+{
+	int i;
+
+	if (carpr_vhid == -1)
+		errx(1, "state requires vhid");
+
+	for (i = 0; i <= CARP_MAXSTATE; i++)
+		if (strcasecmp(carp_states[i], val) == 0) {
+			carpr_state = i;
+			return;
+		}
+
+	errx(1, "unknown state");
+}
+
+static struct cmd carp_cmds[] = {
+	DEF_CMD_ARG("advbase",	setcarp_advbase),
+	DEF_CMD_ARG("advskew",	setcarp_advskew),
+	DEF_CMD_ARG("pass",	setcarp_passwd),
+	DEF_CMD_ARG("vhid",	setcarp_vhid),
+	DEF_CMD_ARG("state",	setcarp_state),
+};
+static struct afswtch af_carp = {
+	.af_name	= "af_carp",
+	.af_af		= AF_UNSPEC,
+	.af_other_status = carp_status,
+};
+
+static __constructor void
+carp_ctor(void)
+{
+#define	N(a)	(sizeof(a) / sizeof(a[0]))
+	int i;
+
+	for (i = 0; i < N(carp_cmds);  i++)
+		cmd_register(&carp_cmds[i]);
+	af_register(&af_carp);
+#undef N
+}