+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. 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.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "$FreeBSD: src/sbin/ifconfig/af_inet.c,v 1.3.6.1 2008/11/25 02:59:29 kensmith Exp $";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/if.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <ifaddrs.h>
+
+#include <netinet/in.h>
+#include <net/if_var.h> /* for struct ifaddr */
+#include <netinet/in_var.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include "ifconfig.h"
+
+static struct ifaliasreq in_addreq;
+static struct ifreq in_ridreq;
+
+static void
+in_status(int s __unused, const struct ifaddrs *ifa)
+{
+ struct sockaddr_in *sin, null_sin;
+
+ memset(&null_sin, 0, sizeof(null_sin));
+
+ sin = (struct sockaddr_in *)ifa->ifa_addr;
+ if (sin == NULL)
+ return;
+
+ printf("\tinet %s ", inet_ntoa(sin->sin_addr));
+
+ if (ifa->ifa_flags & IFF_POINTOPOINT) {
+ sin = (struct sockaddr_in *)ifa->ifa_dstaddr;
+ if (sin == NULL)
+ sin = &null_sin;
+ printf("--> %s ", inet_ntoa(sin->sin_addr));
+ }
+
+ sin = (struct sockaddr_in *)ifa->ifa_netmask;
+ if (sin == NULL)
+ sin = &null_sin;
+ printf("netmask 0x%lx ", (unsigned long)ntohl(sin->sin_addr.s_addr));
+
+ if (ifa->ifa_flags & IFF_BROADCAST) {
+ sin = (struct sockaddr_in *)ifa->ifa_broadaddr;
+ if (sin != NULL && sin->sin_addr.s_addr != 0)
+ printf("broadcast %s", inet_ntoa(sin->sin_addr));
+ }
+ putchar('\n');
+}
+
+#define SIN(x) ((struct sockaddr_in *) &(x))
+static struct sockaddr_in *sintab[] = {
+ SIN(in_ridreq.ifr_addr), SIN(in_addreq.ifra_addr),
+ SIN(in_addreq.ifra_mask), SIN(in_addreq.ifra_broadaddr)
+};
+
+static void
+in_getaddr(const char *s, int which)
+{
+#define MIN(a,b) ((a)<(b)?(a):(b))
+ struct sockaddr_in *sin = sintab[which];
+ struct hostent *hp;
+ struct netent *np;
+
+ sin->sin_len = sizeof(*sin);
+ if (which != MASK)
+ sin->sin_family = AF_INET;
+
+ if (which == ADDR) {
+ char *p = NULL;
+
+ if((p = strrchr(s, '/')) != NULL) {
+ /* address is `name/masklen' */
+ int masklen;
+ int ret;
+ struct sockaddr_in *min = sintab[MASK];
+ *p = '\0';
+ ret = sscanf(p+1, "%u", &masklen);
+ if(ret != 1 || (masklen < 0 || masklen > 32)) {
+ *p = '/';
+ errx(1, "%s: bad value", s);
+ }
+ min->sin_len = sizeof(*min);
+ min->sin_addr.s_addr = htonl(~((1LL << (32 - masklen)) - 1) &
+ 0xffffffff);
+ }
+ }
+
+ if (inet_aton(s, &sin->sin_addr))
+ return;
+ if ((hp = gethostbyname(s)) != 0)
+ bcopy(hp->h_addr, (char *)&sin->sin_addr,
+ MIN(hp->h_length, sizeof(sin->sin_addr)));
+ else if ((np = getnetbyname(s)) != 0)
+ sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
+ else
+ errx(1, "%s: bad value", s);
+#undef MIN
+}
+
+static void
+in_status_tunnel(int s)
+{
+ char src[NI_MAXHOST];
+ char dst[NI_MAXHOST];
+ struct ifreq ifr;
+ const struct sockaddr *sa = (const struct sockaddr *) &ifr.ifr_addr;
+
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_name, name, IFNAMSIZ);
+
+ if (ioctl(s, SIOCGIFPSRCADDR, (caddr_t)&ifr) < 0)
+ return;
+ if (sa->sa_family != AF_INET)
+ return;
+ if (getnameinfo(sa, sa->sa_len, src, sizeof(src), 0, 0, NI_NUMERICHOST) != 0)
+ src[0] = '\0';
+
+ if (ioctl(s, SIOCGIFPDSTADDR, (caddr_t)&ifr) < 0)
+ return;
+ if (sa->sa_family != AF_INET)
+ return;
+ if (getnameinfo(sa, sa->sa_len, dst, sizeof(dst), 0, 0, NI_NUMERICHOST) != 0)
+ dst[0] = '\0';
+
+ printf("\ttunnel inet %s --> %s\n", src, dst);
+}
+
+static void
+in_set_tunnel(int s, struct addrinfo *srcres, struct addrinfo *dstres)
+{
+ struct ifaliasreq addreq;
+
+ memset(&addreq, 0, sizeof(addreq));
+ strncpy(addreq.ifra_name, name, IFNAMSIZ);
+ memcpy(&addreq.ifra_addr, srcres->ai_addr, srcres->ai_addr->sa_len);
+ memcpy(&addreq.ifra_dstaddr, dstres->ai_addr, dstres->ai_addr->sa_len);
+
+ if (ioctl(s, SIOCSIFPHYADDR, &addreq) < 0)
+ warn("SIOCSIFPHYADDR");
+}
+
+static struct afswtch af_inet = {
+ .af_name = "inet",
+ .af_af = AF_INET,
+ .af_status = in_status,
+ .af_getaddr = in_getaddr,
+ .af_status_tunnel = in_status_tunnel,
+ .af_settunnel = in_set_tunnel,
+ .af_difaddr = SIOCDIFADDR,
+ .af_aifaddr = SIOCAIFADDR,
+ .af_ridreq = &in_ridreq,
+ .af_addreq = &in_addreq,
+};
+
+static __constructor void
+inet_ctor(void)
+{
+ af_register(&af_inet);
+}
projects / apple / network_cmds.git / blobdiff