/* $OpenBSD: ifconfig.c,v 1.13 1998/03/17 08:10:21 deraadt Exp $ */ /* $NetBSD: ifconfig.c,v 1.40 1997/10/01 02:19:43 enami Exp $ */ /* * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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 char copyright[] = "@(#) Copyright (c) 1983, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)ifconfig.c 8.2 (Berkeley) 2/16/94"; #else static char rcsid[] = "$OpenBSD: ifconfig.c,v 1.13 1998/03/17 08:10:21 deraadt Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #define NSIP #include #include #define IPXIP #include #include #include #define EON #include #include #include #include #include #include #include #include #include #include struct ifreq ifr, ridreq; struct ifaliasreq addreq; struct iso_ifreq iso_ridreq; struct iso_aliasreq iso_addreq; struct sockaddr_in netmask; struct netrange at_nr; /* AppleTalk net range */ int ipx_type = ETHERTYPE_II; char name[30]; int flags, metric, mtu, setaddr, setipdst, doalias; int clearaddr, s; int newaddr = 1; int nsellength = 1; int af = AF_INET; int dflag, mflag, lflag, uflag; int reset_if_flags; void notealias __P((char *, int)); void notrailers __P((char *, int)); void setifaddr __P((char *, int)); void setifdstaddr __P((char *, int)); void setifflags __P((char *, int)); void setifbroadaddr __P((char *)); void setifipdst __P((char *)); void setifmetric __P((char *)); void setifnetmask __P((char *)); void setnsellength __P((char *)); void setsnpaoffset __P((char *)); void setipxframetype __P((char *, int)); void setatrange __P((char *, int)); void setatphase __P((char *, int)); void checkatrange __P ((struct sockaddr_at *)); #define NEXTARG 0xffffff struct cmd { char *c_name; int c_parameter; /* NEXTARG means next argv */ void (*c_func)(); } cmds[] = { { "up", IFF_UP, setifflags } , { "down", -IFF_UP, setifflags }, { "trailers", -1, notrailers }, { "-trailers", 1, notrailers }, { "arp", -IFF_NOARP, setifflags }, { "-arp", IFF_NOARP, setifflags }, { "debug", IFF_DEBUG, setifflags }, { "-debug", -IFF_DEBUG, setifflags }, { "alias", IFF_UP, notealias }, { "-alias", -IFF_UP, notealias }, { "delete", -IFF_UP, notealias }, #ifdef notdef #define EN_SWABIPS 0x1000 { "swabips", EN_SWABIPS, setifflags }, { "-swabips", -EN_SWABIPS, setifflags }, #endif { "netmask", NEXTARG, setifnetmask }, { "metric", NEXTARG, setifmetric }, { "broadcast", NEXTARG, setifbroadaddr }, { "ipdst", NEXTARG, setifipdst }, #ifndef INET_ONLY { "range", NEXTARG, setatrange }, { "phase", NEXTARG, setatphase }, { "snpaoffset", NEXTARG, setsnpaoffset }, { "nsellength", NEXTARG, setnsellength }, { "802.2", ETHERTYPE_8022, setipxframetype }, { "802.2tr", ETHERTYPE_8022TR, setipxframetype }, { "802.3", ETHERTYPE_8023, setipxframetype }, { "snap", ETHERTYPE_SNAP, setipxframetype }, { "EtherII", ETHERTYPE_II, setipxframetype }, #endif /* INET_ONLY */ { "link0", IFF_LINK0, setifflags } , { "-link0", -IFF_LINK0, setifflags } , { "link1", IFF_LINK1, setifflags } , { "-link1", -IFF_LINK1, setifflags } , { "link2", IFF_LINK2, setifflags } , { "-link2", -IFF_LINK2, setifflags } , { 0, 0, setifaddr }, { 0, 0, setifdstaddr }, }; void adjust_nsellength(); int getinfo __P((struct ifreq *)); void getsock __P((int)); void printif __P((struct ifreq *, int)); void printb __P((char *, unsigned short, char *)); void status __P((int)); void usage(); /* * XNS support liberally adapted from code written at the University of * Maryland principally by James O'Toole and Chris Torek. */ void in_status __P((int)); void in_getaddr __P((char *, int)); void at_status __P((int)); void at_getaddr __P((char *, int)); void xns_status __P((int)); void xns_getaddr __P((char *, int)); void ipx_status __P((int)); void ipx_getaddr __P((char *, int)); void iso_status __P((int)); void iso_getaddr __P((char *, int)); /* Known address families */ struct afswtch { char *af_name; short af_af; void (*af_status)(); void (*af_getaddr)(); u_long af_difaddr; u_long af_aifaddr; caddr_t af_ridreq; caddr_t af_addreq; } afs[] = { #define C(x) ((caddr_t) &x) { "inet", AF_INET, in_status, in_getaddr, SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) }, #ifndef INET_ONLY /* small version, for boot media */ { "atalk", AF_APPLETALK, at_status, at_getaddr, SIOCDIFADDR, SIOCAIFADDR, C(addreq), C(addreq) }, { "ns", AF_NS, xns_status, xns_getaddr, SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) }, { "ipx", AF_IPX, ipx_status, ipx_getaddr, SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) }, { "iso", AF_ISO, iso_status, iso_getaddr, SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) }, #endif /* INET_ONLY */ { 0, 0, 0, 0 } }; struct afswtch *afp; /*the address family being set or asked about*/ int main(argc, argv) int argc; char *argv[]; { register struct afswtch *rafp; int aflag = 0; int ifaliases = 0; if (argc < 2) usage(); argc--, argv++; if (!strcmp(*argv, "-a")) aflag = 1; else if (!strcmp(*argv, "-A")) { aflag = 1; ifaliases = 1; } else strncpy(name, *argv, sizeof(name)); argc--, argv++; if (argc > 0) { for (afp = rafp = afs; rafp->af_name; rafp++) if (strcmp(rafp->af_name, *argv) == 0) { afp = rafp; argc--; argv++; break; } rafp = afp; af = ifr.ifr_addr.sa_family = rafp->af_af; } if (aflag) { if (argc > 0) usage(); printif(NULL, ifaliases); exit(0); } strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (argc == 0) { printif(&ifr, 1); exit(0); } if (getinfo(&ifr) < 0) exit(1); while (argc > 0) { register struct cmd *p; for (p = cmds; p->c_name; p++) if (strcmp(*argv, p->c_name) == 0) break; if (p->c_name == 0 && setaddr) p++; /* got src, do dst */ if (p->c_func) { if (p->c_parameter == NEXTARG) { if (argv[1] == NULL) errx(1, "'%s' requires argument", p->c_name); (*p->c_func)(argv[1]); argc--, argv++; } else (*p->c_func)(*argv, p->c_parameter); } argc--, argv++; } #ifndef INET_ONLY switch (af) { case AF_ISO: adjust_nsellength(); break; case AF_NS: if (setipdst) { struct nsip_req rq; int size = sizeof(rq); rq.rq_ns = addreq.ifra_addr; rq.rq_ip = addreq.ifra_dstaddr; if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0) warn("encapsulation routing"); } break; case AF_IPX: if (setipdst) { struct ipxip_req rq; int size = sizeof(rq); rq.rq_ipx = addreq.ifra_addr; rq.rq_ip = addreq.ifra_dstaddr; if (setsockopt(s, 0, SO_IPXIP_ROUTE, &rq, size) < 0) warn("encapsulation routing"); } break; case AF_APPLETALK: checkatrange((struct sockaddr_at *) &addreq.ifra_addr); break; } #endif /* INET_ONLY */ if (clearaddr) { int ret; strncpy(rafp->af_ridreq, name, sizeof ifr.ifr_name); if ((ret = ioctl(s, rafp->af_difaddr, rafp->af_ridreq)) < 0) { if (errno == EADDRNOTAVAIL && (doalias >= 0)) { /* means no previous address for interface */ } else warn("SIOCDIFADDR"); } } if (newaddr) { strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name); if (ioctl(s, rafp->af_aifaddr, rafp->af_addreq) < 0) warn("SIOCAIFADDR"); } exit(0); } void getsock(naf) int naf; { static int oaf = -1; if (oaf == naf) return; if (oaf != -1) close(s); s = socket(naf, SOCK_DGRAM, 0); if (s < 0) oaf = -1; else oaf = naf; } int getinfo(ifr) struct ifreq *ifr; { getsock(af); if (s < 0) err(1, "socket"); if (ioctl(s, SIOCGIFFLAGS, (caddr_t)ifr) < 0) { warn("SIOCGIFFLAGS"); return (-1); } flags = ifr->ifr_flags; if (ioctl(s, SIOCGIFMETRIC, (caddr_t)ifr) < 0) { warn("SIOCGIFMETRIC"); metric = 0; } else metric = ifr->ifr_metric; return (0); } void printif(ifrm, ifaliases) struct ifreq *ifrm; { char *inbuf = NULL; struct ifconf ifc; struct ifreq ifreq, *ifrp; int i, len = 8192; int count = 0, noinet = 1; getsock(af); if (s < 0) err(1, "socket"); while (1) { ifc.ifc_len = len; ifc.ifc_buf = inbuf = realloc(inbuf, len); if (inbuf == NULL) err(1, "malloc"); if (ioctl(s, SIOCGIFCONF, &ifc) < 0) err(1, "SIOCGIFCONF"); if (ifc.ifc_len + sizeof(ifreq) < len) break; len *= 2; } ifrp = ifc.ifc_req; ifreq.ifr_name[0] = '\0'; for (i = 0; i < ifc.ifc_len; ) { ifrp = (struct ifreq *)((caddr_t)ifc.ifc_req + i); i += sizeof(ifrp->ifr_name) + (ifrp->ifr_addr.sa_len > sizeof(struct sockaddr) ? ifrp->ifr_addr.sa_len : sizeof(struct sockaddr)); if (ifrm && strncmp(ifrm->ifr_name, ifrp->ifr_name, sizeof(ifrp->ifr_name))) continue; strncpy(name, ifrp->ifr_name, sizeof(ifrp->ifr_name)); if (ifrp->ifr_addr.sa_family == AF_LINK) { ifreq = ifr = *ifrp; if (getinfo(&ifreq) < 0) continue; status(1); count++; noinet = 1; continue; } if (!strncmp(ifreq.ifr_name, ifrp->ifr_name, sizeof(ifrp->ifr_name))) { register struct afswtch *p = afp; if (ifaliases == 0 && noinet == 0) continue; ifr = *ifrp; if ((p = afp) != NULL) { (*p->af_status)(1); } else for (p = afs; p->af_name; p++) { ifr.ifr_addr.sa_family = p->af_af; (*p->af_status)(0); } count++; noinet = 0; continue; } } free(inbuf); if (count == 0) { fprintf(stderr, "%s: no such interface\n", name); exit(1); } } #define RIDADDR 0 #define ADDR 1 #define MASK 2 #define DSTADDR 3 /*ARGSUSED*/ void setifaddr(addr, param) char *addr; int param; { /* * Delay the ioctl to set the interface addr until flags are all set. * The address interpretation may depend on the flags, * and the flags may change when the address is set. */ setaddr++; if (doalias == 0) clearaddr = 1; (*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR)); } void setifnetmask(addr) char *addr; { (*afp->af_getaddr)(addr, MASK); } void setifbroadaddr(addr) char *addr; { (*afp->af_getaddr)(addr, DSTADDR); } void setifipdst(addr) char *addr; { in_getaddr(addr, DSTADDR); setipdst++; clearaddr = 0; newaddr = 0; } #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) /*ARGSUSED*/ void notealias(addr, param) char *addr; int param; { if (setaddr && doalias == 0 && param < 0) memcpy(rqtosa(af_ridreq), rqtosa(af_addreq), rqtosa(af_addreq)->sa_len); doalias = param; if (param < 0) { clearaddr = 1; newaddr = 0; } else clearaddr = 0; } /*ARGSUSED*/ void notrailers(vname, value) char *vname; int value; { printf("Note: trailers are no longer sent, but always received\n"); } /*ARGSUSED*/ void setifdstaddr(addr, param) char *addr; int param; { (*afp->af_getaddr)(addr, DSTADDR); } void setifflags(vname, value) char *vname; int value; { if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) err(1, "SIOCGIFFLAGS"); strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); flags = ifr.ifr_flags; if (value < 0) { value = -value; flags &= ~value; } else flags |= value; ifr.ifr_flags = flags; if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) err(1, "SIOCSIFFLAGS"); } void setifmetric(val) char *val; { strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); ifr.ifr_metric = atoi(val); if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) warn("SIOCSIFMETRIC"); } #define IFFBITS \ "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\ \11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2\20MULTICAST" /* * Print the status of the interface. If an address family was * specified, show it and it only; otherwise, show them all. */ void status(link) int link; { register struct afswtch *p = afp; printf("%s: ", name); printb("flags", flags, IFFBITS); if (metric) printf(" metric %d", metric); putchar('\n'); if (link == 0) { if ((p = afp) != NULL) { (*p->af_status)(1); } else for (p = afs; p->af_name; p++) { ifr.ifr_addr.sa_family = p->af_af; (*p->af_status)(0); } } } void in_status(force) int force; { struct sockaddr_in *sin; char *inet_ntoa(); getsock(AF_INET); if (s < 0) { if (errno == EPROTONOSUPPORT) return; err(1, "socket"); } strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); sin = (struct sockaddr_in *)&ifr.ifr_addr; printf("\tinet %s ", inet_ntoa(sin->sin_addr)); strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) { if (errno != EADDRNOTAVAIL) warn("SIOCGIFNETMASK"); memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); } else netmask.sin_addr = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr; if (flags & IFF_POINTOPOINT) { if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFDSTADDR"); } strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); sin = (struct sockaddr_in *)&ifr.ifr_dstaddr; printf("--> %s ", inet_ntoa(sin->sin_addr)); } printf("netmask 0x%x ", ntohl(netmask.sin_addr.s_addr)); if (flags & IFF_BROADCAST) { if (ioctl(s, SIOCGIFBRDADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFBRDADDR"); } strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); sin = (struct sockaddr_in *)&ifr.ifr_addr; if (sin->sin_addr.s_addr != 0) printf("broadcast %s", inet_ntoa(sin->sin_addr)); } putchar('\n'); } #ifndef INET_ONLY void at_status(force) int force; { struct sockaddr_at *sat, null_sat; struct netrange *nr; getsock(AF_APPLETALK); if (s < 0) { if (errno == EPROTONOSUPPORT) return; err(1, "socket"); } (void) memset(&ifr, 0, sizeof(ifr)); (void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { if (!force) return; (void) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); } else warn("SIOCGIFADDR"); } (void) strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); sat = (struct sockaddr_at *)&ifr.ifr_addr; (void) memset(&null_sat, 0, sizeof(null_sat)); nr = (struct netrange *) &sat->sat_zero; printf("\tAppleTalk %d.%d range %d-%d phase %d", ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node, ntohs(nr->nr_firstnet), ntohs(nr->nr_lastnet), nr->nr_phase); if (flags & IFF_POINTOPOINT) { if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) (void) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFDSTADDR"); } (void) strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); sat = (struct sockaddr_at *)&ifr.ifr_dstaddr; if (!sat) sat = &null_sat; printf("--> %d.%d", ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node); } if (flags & IFF_BROADCAST) { /* note RTAX_BRD overlap with IFF_POINTOPOINT */ sat = (struct sockaddr_at *)&ifr.ifr_broadaddr; if (sat) printf(" broadcast %d.%d", ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node); } putchar('\n'); } void xns_status(force) int force; { struct sockaddr_ns *sns; getsock(AF_NS); if (s < 0) { if (errno == EPROTONOSUPPORT) return; err(1, "socket"); } memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { if (!force) return; memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); } else warn("SIOCGIFADDR"); } strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); sns = (struct sockaddr_ns *)&ifr.ifr_addr; printf("\tns %s ", ns_ntoa(sns->sns_addr)); if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */ if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFDSTADDR"); } strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr; printf("--> %s ", ns_ntoa(sns->sns_addr)); } putchar('\n'); } void setipxframetype(vname, type) char *vname; int type; { ipx_type = type; } void ipx_status(force) int force; { struct sockaddr_ipx *sipx; getsock(AF_IPX); if (s < 0) { if (errno == EPROTONOSUPPORT) return; err(1, "socket"); } memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { if (!force) return; memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); } else warn("SIOCGIFADDR"); } strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); sipx = (struct sockaddr_ipx *)&ifr.ifr_addr; printf("\tipx %s ", ipx_ntoa(sipx->sipx_addr)); if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */ if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFDSTADDR"); } strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); sipx = (struct sockaddr_ipx *)&ifr.ifr_dstaddr; printf("--> %s ", ipx_ntoa(sipx->sipx_addr)); } { struct frame_types { int type; char *name; } *p, frames[] = { { ETHERTYPE_8022, "802.2" }, { ETHERTYPE_8022TR, "802.2tr" }, { ETHERTYPE_8023, "802.3" }, { ETHERTYPE_SNAP, "SNAP" }, { ETHERTYPE_II, "EtherII" }, { 0, NULL } }; for (p = frames; p->name && p->type != sipx->sipx_type; p++); if (p->name != NULL) printf("frame %s ", p->name); } putchar('\n'); } void iso_status(force) int force; { struct sockaddr_iso *siso; struct iso_ifreq ifr; getsock(AF_ISO); if (s < 0) { if (errno == EPROTONOSUPPORT) return; err(1, "socket"); } memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(s, SIOCGIFADDR_ISO, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { if (!force) return; memset(&ifr.ifr_Addr, 0, sizeof(ifr.ifr_Addr)); } else warn("SIOCGIFADDR_ISO"); } strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); siso = &ifr.ifr_Addr; printf("\tiso %s ", iso_ntoa(&siso->siso_addr)); if (ioctl(s, SIOCGIFNETMASK_ISO, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_Addr, 0, sizeof(ifr.ifr_Addr)); else warn("SIOCGIFNETMASK_ISO"); } else { printf(" netmask %s ", iso_ntoa(&siso->siso_addr)); } if (flags & IFF_POINTOPOINT) { if (ioctl(s, SIOCGIFDSTADDR_ISO, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_Addr, 0, sizeof(ifr.ifr_Addr)); else warn("SIOCGIFDSTADDR_ISO"); } strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); siso = &ifr.ifr_Addr; printf("--> %s ", iso_ntoa(&siso->siso_addr)); } putchar('\n'); } #endif /* INET_ONLY */ struct in_addr inet_makeaddr(); #define SIN(x) ((struct sockaddr_in *) &(x)) struct sockaddr_in *sintab[] = { SIN(ridreq.ifr_addr), SIN(addreq.ifra_addr), SIN(addreq.ifra_mask), SIN(addreq.ifra_broadaddr)}; void in_getaddr(s, which) char *s; int which; { register 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 (inet_aton(s, &sin->sin_addr) == 0) { if ((hp = gethostbyname(s))) memcpy(&sin->sin_addr, hp->h_addr, hp->h_length); else if ((np = getnetbyname(s))) sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); else errx(1, "%s: bad value", s); } } /* * Print a value a la the %b format of the kernel's printf */ void printb(s, v, bits) char *s; register char *bits; register unsigned short v; { register int i, any = 0; register char c; if (bits && *bits == 8) printf("%s=%o", s, v); else printf("%s=%x", s, v); bits++; if (bits) { putchar('<'); while ((i = *bits++)) { if (v & (1 << (i-1))) { if (any) putchar(','); any = 1; for (; (c = *bits) > 32; bits++) putchar(c); } else for (; *bits > 32; bits++) ; } putchar('>'); } } #ifndef INET_ONLY void at_getaddr(addr, which) char *addr; int which; { struct sockaddr_at *sat = (struct sockaddr_at *) &addreq.ifra_addr; u_int net, node; sat->sat_family = AF_APPLETALK; sat->sat_len = sizeof(*sat); if (which == MASK) errx(1, "AppleTalk does not use netmasks\n"); if (sscanf(addr, "%u.%u", &net, &node) != 2 || net == 0 || net > 0xffff || node == 0 || node > 0xfe) errx(1, "%s: illegal address", addr); sat->sat_addr.s_net = htons(net); sat->sat_addr.s_node = node; } void setatrange(range, d) char *range; int d; { u_short first = 123, last = 123; if (sscanf(range, "%hu-%hu", &first, &last) != 2 || first == 0 || first > 0xffff || last == 0 || last > 0xffff || first > last) errx(1, "%s: illegal net range: %u-%u", range, first, last); at_nr.nr_firstnet = htons(first); at_nr.nr_lastnet = htons(last); } void setatphase(phase, d) char *phase; int d; { if (!strcmp(phase, "1")) at_nr.nr_phase = 1; else if (!strcmp(phase, "2")) at_nr.nr_phase = 2; else errx(1, "%s: illegal phase", phase); } void checkatrange(sat) struct sockaddr_at *sat; { if (at_nr.nr_phase == 0) at_nr.nr_phase = 2; /* Default phase 2 */ if (at_nr.nr_firstnet == 0) /* Default range of one */ at_nr.nr_firstnet = at_nr.nr_lastnet = sat->sat_addr.s_net; printf("\tatalk %d.%d range %d-%d phase %d\n", ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node, ntohs(at_nr.nr_firstnet), ntohs(at_nr.nr_lastnet), at_nr.nr_phase); if ((u_short) ntohs(at_nr.nr_firstnet) > (u_short) ntohs(sat->sat_addr.s_net) || (u_short) ntohs(at_nr.nr_lastnet) < (u_short) ntohs(sat->sat_addr.s_net)) errx(1, "AppleTalk address is not in range"); *((struct netrange *) &sat->sat_zero) = at_nr; } #define SNS(x) ((struct sockaddr_ns *) &(x)) struct sockaddr_ns *snstab[] = { SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr), SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)}; void xns_getaddr(addr, which) char *addr; int which; { struct sockaddr_ns *sns = snstab[which]; struct ns_addr ns_addr(); sns->sns_family = AF_NS; sns->sns_len = sizeof(*sns); sns->sns_addr = ns_addr(addr); if (which == MASK) printf("Attempt to set XNS netmask will be ineffectual\n"); } #define SIPX(x) ((struct sockaddr_ipx *) &(x)) struct sockaddr_ipx *sipxtab[] = { SIPX(ridreq.ifr_addr), SIPX(addreq.ifra_addr), SIPX(addreq.ifra_mask), SIPX(addreq.ifra_broadaddr)}; void ipx_getaddr(addr, which) char *addr; int which; { struct sockaddr_ipx *sipx = sipxtab[which]; struct ipx_addr ipx_addr(); sipx->sipx_family = AF_IPX; sipx->sipx_len = sizeof(*sipx); sipx->sipx_addr = ipx_addr(addr); sipx->sipx_type = ipx_type; if (which == MASK) printf("Attempt to set IPX netmask will be ineffectual\n"); } #define SISO(x) ((struct sockaddr_iso *) &(x)) struct sockaddr_iso *sisotab[] = { SISO(iso_ridreq.ifr_Addr), SISO(iso_addreq.ifra_addr), SISO(iso_addreq.ifra_mask), SISO(iso_addreq.ifra_dstaddr)}; void iso_getaddr(addr, which) char *addr; int which; { register struct sockaddr_iso *siso = sisotab[which]; struct iso_addr *iso_addr(); siso->siso_addr = *iso_addr(addr); if (which == MASK) { siso->siso_len = TSEL(siso) - (caddr_t)(siso); siso->siso_nlen = 0; } else { siso->siso_len = sizeof(*siso); siso->siso_family = AF_ISO; } } void setsnpaoffset(val) char *val; { iso_addreq.ifra_snpaoffset = atoi(val); } void setnsellength(val) char *val; { nsellength = atoi(val); if (nsellength < 0) errx(1, "Negative NSEL length is absurd"); if (afp == 0 || afp->af_af != AF_ISO) errx(1, "Setting NSEL length valid only for iso"); } void fixnsel(s) register struct sockaddr_iso *s; { if (s->siso_family == 0) return; s->siso_tlen = nsellength; } void adjust_nsellength() { fixnsel(sisotab[RIDADDR]); fixnsel(sisotab[ADDR]); fixnsel(sisotab[DSTADDR]); } #endif /* INET_ONLY */ void usage() { fprintf(stderr, "usage: ifconfig interface\n%s", "\t[ [af] [ address [ dest_addr ] ] [ up ] [ down ] " "[ netmask mask ] ]\n" "\t[ metric n ]\n" "\t[ arp | -arp ]\n" "\t[ -802.2 | -802.3 | -802.2tr | -snap | -EtherII ]\n" "\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n" " ifconfig [-a | -A] [ af ]\n"); exit(1); }