diff options
Diffstat (limited to 'freebsd-userspace/commands/sbin/ifconfig/af_inet.c')
| -rw-r--r-- | freebsd-userspace/commands/sbin/ifconfig/af_inet.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/freebsd-userspace/commands/sbin/ifconfig/af_inet.c b/freebsd-userspace/commands/sbin/ifconfig/af_inet.c new file mode 100644 index 00000000..65488a35 --- /dev/null +++ b/freebsd-userspace/commands/sbin/ifconfig/af_inet.c @@ -0,0 +1,213 @@ +/* + * 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[] = + "$FreeBSD$"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/socket.h> +#include <net/if.h> + +#include <ctype.h> +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <ifaddrs.h> + +#include <netinet/in.h> +#ifdef __rtems__ +#include <freebsd/net/if_var.h> /* for struct ifaddr */ +#include <freebsd/netinet/in_var.h> +#else +#include <net/if_var.h> /* for struct ifaddr */ +#include <netinet/in_var.h> +#endif +#include <arpa/inet.h> +#include <netdb.h> + +#include "ifconfig.h" + +#ifdef __rtems__ +#include <freebsd/sys/sockio.h> +#endif + +static struct in_aliasreq 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) { + const char *errstr; + /* address is `name/masklen' */ + int masklen; + struct sockaddr_in *min = sintab[MASK]; + *p = '\0'; + if (!isdigit(*(p + 1))) + errstr = "invalid"; + else + masklen = (int)strtonum(p + 1, 0, 32, &errstr); + if (errstr != NULL) { + *p = '/'; + errx(1, "%s: bad value (width %s)", s, errstr); + } + 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((size_t)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 in_aliasreq 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); +} |