/* $NetBSD: ifconfig.c,v 1.49 1998/09/06 17:51:32 christos Exp $ */ /*- * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * 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. */ #include #ifndef lint __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 __RCSID("$NetBSD: ifconfig.c,v 1.49 1998/09/06 17:51:32 christos Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #define NSIP #include #include #include #define EON #include #include #include #include #include #include #include #include #include #include struct ifreq ifr, ridreq; struct ifaliasreq addreq __attribute__((aligned(4))); struct iso_aliasreq iso_addreq; struct sockaddr_in netmask; struct netrange at_nr; /* AppleTalk net range */ char name[30]; int flags, metric, mtu, setaddr, setipdst, doalias; int clearaddr, s; int newaddr = -1; int nsellength = 1; int af; int Aflag, aflag, 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 *, int)); void setifipdst __P((char *, int)); void setifmetric __P((char *, int)); void setifmtu __P((char *, int)); void setifnetmask __P((char *, int)); void setnsellength __P((char *, int)); void setsnpaoffset __P((char *, int)); void setatrange __P((char *, int)); void setatphase __P((char *, int)); void checkatrange __P ((struct sockaddr_at *)); void setmedia __P((char *, int)); void setmediaopt __P((char *, int)); void unsetmediaopt __P((char *, int)); void setmediainst __P((char *, int)); void fixnsel __P((struct sockaddr_iso *)); int main __P((int, char *[])); /* * Media stuff. Whenever a media command is first performed, the * currently select media is grabbed for this interface. If `media' * is given, the current media word is modifed. `mediaopt' commands * only modify the set and clear words. They then operate on the * current media word later. */ int media_current; int mediaopt_set; int mediaopt_clear; int actions; /* Actions performed */ #define A_MEDIA 0x0001 /* media command */ #define A_MEDIAOPTSET 0x0002 /* mediaopt command */ #define A_MEDIAOPTCLR 0x0004 /* -mediaopt command */ #define A_MEDIAOPT (A_MEDIAOPTSET|A_MEDIAOPTCLR) #define A_MEDIAINST 0x0008 /* instance or inst command */ #define NEXTARG 0xffffff struct cmd { char *c_name; int c_parameter; /* NEXTARG means next argv */ int c_action; /* defered action */ void (*c_func) __P((char *, int)); } cmds[] = { { "up", IFF_UP, 0, setifflags } , { "down", -IFF_UP, 0, setifflags }, { "trailers", -1, 0, notrailers }, { "-trailers", 1, 0, notrailers }, { "arp", -IFF_NOARP, 0, setifflags }, { "-arp", IFF_NOARP, 0, setifflags }, { "debug", IFF_DEBUG, 0, setifflags }, { "-debug", -IFF_DEBUG, 0, setifflags }, { "alias", IFF_UP, 0, notealias }, { "-alias", -IFF_UP, 0, notealias }, { "delete", -IFF_UP, 0, notealias }, #ifdef notdef #define EN_SWABIPS 0x1000 { "swabips", EN_SWABIPS, 0, setifflags }, { "-swabips", -EN_SWABIPS, 0, setifflags }, #endif { "netmask", NEXTARG, 0, setifnetmask }, { "metric", NEXTARG, 0, setifmetric }, { "mtu", NEXTARG, 0, setifmtu }, { "broadcast", NEXTARG, 0, setifbroadaddr }, { "ipdst", NEXTARG, 0, setifipdst }, #ifndef INET_ONLY { "range", NEXTARG, 0, setatrange }, { "phase", NEXTARG, 0, setatphase }, { "snpaoffset", NEXTARG, 0, setsnpaoffset }, { "nsellength", NEXTARG, 0, setnsellength }, #endif /* INET_ONLY */ { "link0", IFF_LINK0, 0, setifflags } , { "-link0", -IFF_LINK0, 0, setifflags } , { "link1", IFF_LINK1, 0, setifflags } , { "-link1", -IFF_LINK1, 0, setifflags } , { "link2", IFF_LINK2, 0, setifflags } , { "-link2", -IFF_LINK2, 0, setifflags } , { "media", NEXTARG, A_MEDIA, setmedia }, { "mediaopt", NEXTARG, A_MEDIAOPTSET, setmediaopt }, { "-mediaopt", NEXTARG, A_MEDIAOPTCLR, unsetmediaopt }, { "instance", NEXTARG, A_MEDIAINST, setmediainst }, { "inst", NEXTARG, A_MEDIAINST, setmediainst }, { 0, 0, 0, setifaddr }, { 0, 0, 0, setifdstaddr }, }; void adjust_nsellength __P((void)); int getinfo __P((struct ifreq *)); void getsock __P((int)); void printall __P((void)); void printalias __P((const char *)); void printb __P((char *, unsigned short, char *)); void status __P((const u_int8_t *, int)); void usage __P((void)); const char *get_media_type_string __P((int)); const char *get_media_subtype_string __P((int)); int get_media_subtype __P((int, const char *)); int get_media_options __P((int, const char *)); int lookup_media_word __P((struct ifmedia_description *, int, const char *)); void print_media_word __P((int, int, int)); void process_media_commands __P((void)); void init_current_media __P((void)); /* * XNS support liberally adapted from code written at the University of * Maryland principally by James O'Toole and Chris Torek. */ void in_alias __P((struct ifreq *)); 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 iso_status __P((int)); void iso_getaddr __P((char *, int)); /* Known address families */ struct afswtch { char *af_name; short af_af; void (*af_status) __P((int)); void (*af_getaddr) __P((char *, int)); 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) }, { "iso", AF_ISO, iso_status, iso_getaddr, SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(iso_addreq) }, #endif /* INET_ONLY */ { 0, 0, 0, 0 } }; struct afswtch *afp; /*the address family being set or asked about*/ struct afswtch *lookup_af __P((const char *)); int main(argc, argv) int argc; char *argv[]; { int ch; /* Parse command-line options */ aflag = mflag = 0; while ((ch = getopt(argc, argv, "Aadlmu")) != -1) { switch (ch) { case 'A': Aflag = 1; break; case 'a': aflag = 1; break; case 'd': dflag = 1; break; case 'l': lflag = 1; break; case 'm': mflag = 1; break; case 'u': uflag = 1; break; default: usage(); /* NOTREACHED */ } } argc -= optind; argv += optind; /* * -l means "list all interfaces", and is mutally exclusive with * all other flags/commands. * * -a means "print status of all interfaces". */ if (lflag && (aflag || mflag || argc)) usage(); if (aflag || lflag) { if (argc > 1) usage(); else if (argc == 1) { afp = lookup_af(argv[0]); if (afp == NULL) usage(); } if (afp) af = ifr.ifr_addr.sa_family = afp->af_af; else af = ifr.ifr_addr.sa_family = afs[0].af_af; printall(); exit(0); } /* Make sure there's an interface name. */ if (argc < 1) usage(); (void) strncpy(name, argv[0], sizeof(name)); argc--; argv++; /* Check for address family. */ afp = NULL; if (argc > 0) { afp = lookup_af(argv[0]); if (afp != NULL) { argv++; argc--; } } if (afp == NULL) afp = afs; af = ifr.ifr_addr.sa_family = afp->af_af; /* Get information about the interface. */ (void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (getinfo(&ifr) < 0) exit(1); /* No more arguments means interface status. */ if (argc == 0) { status(NULL, 0); exit(0); } /* Process commands. */ while (argc > 0) { struct cmd *p; for (p = cmds; p->c_name; p++) if (strcmp(argv[0], 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 (argc < 2) errx(1, "'%s' requires argument", p->c_name); (*p->c_func)(argv[1], 0); argc--, argv++; } else (*p->c_func)(argv[0], p->c_parameter); actions |= p->c_action; } argc--, argv++; } /* Process any media commands that may have been issued. */ process_media_commands(); #ifndef INET_ONLY if (af == AF_ISO) adjust_nsellength(); if (af == AF_APPLETALK) checkatrange((struct sockaddr_at *) &addreq.ifra_addr); if (setipdst && af==AF_NS) { 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"); } #endif /* INET_ONLY */ if (clearaddr) { int ret; (void) strncpy(afp->af_ridreq, name, sizeof ifr.ifr_name); if ((ret = ioctl(s, afp->af_difaddr, afp->af_ridreq)) < 0) { if (errno == EADDRNOTAVAIL && (doalias >= 0)) { /* means no previous address for interface */ } else warn("SIOCDIFADDR"); } } if (newaddr > 0) { (void) strncpy(afp->af_addreq, name, sizeof ifr.ifr_name); if (ioctl(s, afp->af_aifaddr, afp->af_addreq) < 0) warn("SIOCAIFADDR"); } if (reset_if_flags && ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) err(1, "SIOCSIFFLAGS"); exit(0); } struct afswtch * lookup_af(cp) const char *cp; { struct afswtch *a; for (a = afs; a->af_name != NULL; a++) if (strcmp(a->af_name, cp) == 0) return (a); return (NULL); } 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 %s", ifr->ifr_name); return (-1); } flags = ifr->ifr_flags; if (ioctl(s, SIOCGIFMETRIC, (caddr_t)ifr) < 0) { warn("SIOCGIFMETRIC %s", ifr->ifr_name); metric = 0; } else metric = ifr->ifr_metric; if (ioctl(s, SIOCGIFMTU, (caddr_t)ifr) < 0) mtu = 0; else mtu = ifr->ifr_mtu; return (0); } void printalias(iname) const char *iname; { char inbuf[8192]; struct ifconf ifc; struct ifreq *ifr; int i; ifc.ifc_len = sizeof(inbuf); ifc.ifc_buf = inbuf; getsock(af); if (s < 0) err(1, "socket"); if (ioctl(s, SIOCGIFCONF, &ifc) < 0) err(1, "SIOCGIFCONF"); ifr = ifc.ifc_req; for (i = 0; i < ifc.ifc_len; ) { ifr = (struct ifreq *)((caddr_t)ifc.ifc_req + i); i += sizeof(ifr->ifr_name) + (ifr->ifr_addr.sa_len > sizeof(struct sockaddr) ? ifr->ifr_addr.sa_len : sizeof(struct sockaddr)); if (!strncmp(iname, ifr->ifr_name, sizeof(ifr->ifr_name))) { if (ifr->ifr_addr.sa_family == AF_INET) in_alias(ifr); continue; } } } void printall() { char inbuf[8192]; const struct sockaddr_dl *sdl = NULL; struct ifconf ifc; struct ifreq ifreq, *ifr; int i, idx; ifc.ifc_len = sizeof(inbuf); ifc.ifc_buf = inbuf; getsock(af); if (s < 0) err(1, "socket"); if (ioctl(s, SIOCGIFCONF, &ifc) < 0) err(1, "SIOCGIFCONF"); ifr = ifc.ifc_req; ifreq.ifr_name[0] = '\0'; for (i = 0, idx = 0; i < ifc.ifc_len; ) { ifr = (struct ifreq *)((caddr_t)ifc.ifc_req + i); i += sizeof(ifr->ifr_name) + (ifr->ifr_addr.sa_len > sizeof(struct sockaddr) ? ifr->ifr_addr.sa_len : sizeof(struct sockaddr)); if (ifr->ifr_addr.sa_family == AF_LINK) sdl = (const struct sockaddr_dl *) &ifr->ifr_addr; if (!strncmp(ifreq.ifr_name, ifr->ifr_name, sizeof(ifr->ifr_name))) { if (Aflag && ifr->ifr_addr.sa_family == AF_INET) in_alias(ifr); continue; } (void) strncpy(name, ifr->ifr_name, sizeof(ifr->ifr_name)); ifreq = *ifr; if (getinfo(&ifreq) < 0) continue; if (dflag && (flags & IFF_UP) != 0) continue; if (uflag && (flags & IFF_UP) == 0) continue; idx++; /* * Are we just listing the interfaces? */ if (lflag) { if (idx > 1) putchar(' '); fputs(name, stdout); continue; } if (sdl == NULL) { status(NULL, 0); } else { status(LLADDR(sdl), sdl->sdl_alen); sdl = NULL; } } if (lflag) putchar('\n'); } #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 (newaddr == -1) newaddr = 1; if (doalias == 0) clearaddr = 1; (*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR)); } void setifnetmask(addr, d) char *addr; int d; { (*afp->af_getaddr)(addr, MASK); } void setifbroadaddr(addr, d) char *addr; int d; { (*afp->af_getaddr)(addr, DSTADDR); } void setifipdst(addr, d) char *addr; int d; { 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) (void) 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; { puts("Note: trailers are no longer sent, but always received"); } /*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"); (void) 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"); reset_if_flags = 1; } void setifmetric(val, d) char *val; int d; { (void) strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); ifr.ifr_metric = atoi(val); if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) warn("SIOCSIFMETRIC"); } void setifmtu(val, d) char *val; int d; { (void)strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_mtu = atoi(val); if (ioctl(s, SIOCSIFMTU, (caddr_t)&ifr) < 0) warn("SIOCSIFMTU"); } void init_current_media() { struct ifmediareq ifmr; /* * If we have not yet done so, grab the currently-selected * media. */ if ((actions & (A_MEDIA|A_MEDIAOPT)) == 0) { (void) memset(&ifmr, 0, sizeof(ifmr)); (void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name)); if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) { /* * If we get E2BIG, the kernel is telling us * that there are more, so we can ignore it. */ if (errno != E2BIG) err(1, "SGIOCGIFMEDIA"); } media_current = ifmr.ifm_current; } /* Sanity. */ if (IFM_TYPE(media_current) == 0) errx(1, "%s: no link type?", name); } void process_media_commands() { if ((actions & (A_MEDIA|A_MEDIAOPT)) == 0) { /* Nothing to do. */ return; } /* * Media already set up, and commands sanity-checked. Set/clear * any options, and we're ready to go. */ media_current |= mediaopt_set; media_current &= ~mediaopt_clear; strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_media = media_current; if (ioctl(s, SIOCSIFMEDIA, (caddr_t)&ifr) < 0) err(1, "SIOCSIFMEDIA"); } void setmedia(val, d) char *val; int d; { int type, subtype, inst; init_current_media(); /* Only one media command may be given. */ if (actions & A_MEDIA) errx(1, "only one `media' command may be issued"); /* Must not come after mediaopt commands */ if (actions & A_MEDIAOPT) errx(1, "may not issue `media' after `mediaopt' commands"); /* * No need to check if `instance' has been issued; setmediainst() * craps out if `media' has not been specified. */ type = IFM_TYPE(media_current); inst = IFM_INST(media_current); /* Look up the subtype. */ subtype = get_media_subtype(type, val); /* Build the new current media word. */ media_current = IFM_MAKEWORD(type, subtype, 0, inst); /* Media will be set after other processing is complete. */ } void setmediaopt(val, d) char *val; int d; { init_current_media(); /* Can only issue `mediaopt' once. */ if (actions & A_MEDIAOPTSET) errx(1, "only one `mediaopt' command may be issued"); /* Can't issue `mediaopt' if `instance' has already been issued. */ if (actions & A_MEDIAINST) errx(1, "may not issue `mediaopt' after `instance'"); mediaopt_set = get_media_options(IFM_TYPE(media_current), val); /* Media will be set after other processing is complete. */ } void unsetmediaopt(val, d) char *val; int d; { init_current_media(); /* Can only issue `-mediaopt' once. */ if (actions & A_MEDIAOPTCLR) errx(1, "only one `-mediaopt' command may be issued"); /* May not issue `media' and `-mediaopt'. */ if (actions & A_MEDIA) errx(1, "may not issue both `media' and `-mediaopt'"); /* * No need to check for A_MEDIAINST, since the test for A_MEDIA * implicitly checks for A_MEDIAINST. */ mediaopt_clear = get_media_options(IFM_TYPE(media_current), val); /* Media will be set after other processing is complete. */ } void setmediainst(val, d) char *val; int d; { int type, subtype, options, inst; init_current_media(); /* Can only issue `instance' once. */ if (actions & A_MEDIAINST) errx(1, "only one `instance' command may be issued"); /* Must have already specified `media' */ if ((actions & A_MEDIA) == 0) errx(1, "must specify `media' before `instance'"); type = IFM_TYPE(media_current); subtype = IFM_SUBTYPE(media_current); options = IFM_OPTIONS(media_current); inst = atoi(val); if (inst < 0 || inst > IFM_INST_MAX) errx(1, "invalid media instance: %s", val); media_current = IFM_MAKEWORD(type, subtype, options, inst); /* Media will be set after other processing is complete. */ } struct ifmedia_description ifm_type_descriptions[] = IFM_TYPE_DESCRIPTIONS; struct ifmedia_description ifm_subtype_descriptions[] = IFM_SUBTYPE_DESCRIPTIONS; struct ifmedia_description ifm_option_descriptions[] = IFM_OPTION_DESCRIPTIONS; const char * get_media_type_string(mword) int mword; { struct ifmedia_description *desc; for (desc = ifm_type_descriptions; desc->ifmt_string != NULL; desc++) { if (IFM_TYPE(mword) == desc->ifmt_word) return (desc->ifmt_string); } return (""); } const char * get_media_subtype_string(mword) int mword; { struct ifmedia_description *desc; for (desc = ifm_subtype_descriptions; desc->ifmt_string != NULL; desc++) { if (IFM_TYPE_MATCH(desc->ifmt_word, mword) && IFM_SUBTYPE(desc->ifmt_word) == IFM_SUBTYPE(mword)) return (desc->ifmt_string); } return (""); } int get_media_subtype(type, val) int type; const char *val; { int rval; rval = lookup_media_word(ifm_subtype_descriptions, type, val); if (rval == -1) errx(1, "unknown %s media subtype: %s", get_media_type_string(type), val); return (rval); } int get_media_options(type, val) int type; const char *val; { char *optlist, *str; int option, rval = 0; /* We muck with the string, so copy it. */ optlist = strdup(val); if (optlist == NULL) err(1, "strdup"); str = optlist; /* * Look up the options in the user-provided comma-separated list. */ for (; (str = strtok(str, ",")) != NULL; str = NULL) { option = lookup_media_word(ifm_option_descriptions, type, str); if (option == -1) errx(1, "unknown %s media option: %s", get_media_type_string(type), str); rval |= option; } free(optlist); return (rval); } int lookup_media_word(desc, type, val) struct ifmedia_description *desc; int type; const char *val; { for (; desc->ifmt_string != NULL; desc++) { if (IFM_TYPE_MATCH(desc->ifmt_word, type) && strcasecmp(desc->ifmt_string, val) == 0) return (desc->ifmt_word); } return (-1); } void print_media_word(ifmw, print_type, as_syntax) int ifmw, print_type, as_syntax; { struct ifmedia_description *desc; int seen_option = 0; if (print_type) printf("%s ", get_media_type_string(ifmw)); printf("%s%s", as_syntax ? "media " : "", get_media_subtype_string(ifmw)); /* Find options. */ for (desc = ifm_option_descriptions; desc->ifmt_string != NULL; desc++) { if (IFM_TYPE_MATCH(desc->ifmt_word, ifmw) && (ifmw & desc->ifmt_word) != 0 && (seen_option & IFM_OPTIONS(desc->ifmt_word)) == 0) { if (seen_option == 0) printf(" %s", as_syntax ? "mediaopt " : ""); printf("%s%s", seen_option ? "," : "", desc->ifmt_string); seen_option |= IFM_OPTIONS(desc->ifmt_word); } } if (IFM_INST(ifmw) != 0) printf(" instance %d", IFM_INST(ifmw)); } #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(ap, alen) const u_int8_t *ap; int alen; { struct afswtch *p = afp; struct ifmediareq ifmr; int *media_list, i; printf("%s: ", name); printb("flags", flags, IFFBITS); if (metric) printf(" metric %d", metric); if (mtu) printf(" mtu %d", mtu); putchar('\n'); if (ap && alen > 0) { printf("\taddress:"); for (i = 0; i < alen; i++, ap++) printf("%c%02x", i > 0 ? ':' : ' ', *ap); putchar('\n'); } (void) memset(&ifmr, 0, sizeof(ifmr)); (void) strncpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name)); if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) { /* * Interface doesn't support SIOC{G,S}IFMEDIA. */ goto proto_status; } if (ifmr.ifm_count == 0) { warnx("%s: no media types?", name); goto proto_status; } media_list = (int *)malloc(ifmr.ifm_count * sizeof(int)); if (media_list == NULL) err(1, "malloc"); ifmr.ifm_ulist = media_list; if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) < 0) err(1, "SIOCGIFMEDIA"); printf("\tmedia: "); print_media_word(ifmr.ifm_current, 1, 0); if (ifmr.ifm_active != ifmr.ifm_current) { putchar(' '); putchar('('); print_media_word(ifmr.ifm_active, 0, 0); putchar(')'); } putchar('\n'); if (ifmr.ifm_status & IFM_AVALID) { printf("\tstatus: "); switch (IFM_TYPE(ifmr.ifm_active)) { case IFM_ETHER: if (ifmr.ifm_status & IFM_ACTIVE) printf("active"); else printf("no carrier"); break; case IFM_FDDI: case IFM_TOKEN: if (ifmr.ifm_status & IFM_ACTIVE) printf("inserted"); else printf("no ring"); break; default: printf("unknown"); } putchar('\n'); } if (mflag) { int type, printed_type; for (type = IFM_NMIN; type <= IFM_NMAX; type += IFM_NMIN) { for (i = 0, printed_type = 0; i < ifmr.ifm_count; i++) { if (IFM_TYPE(media_list[i]) == type) { if (printed_type == 0) { printf("\tsupported %s media:\n", get_media_type_string(type)); printed_type = 1; } printf("\t\t"); print_media_word(media_list[i], 0, 1); printf("\n"); } } } } free(media_list); proto_status: if ((p = afp) != NULL) { (*p->af_status)(1); if (Aflag & !aflag) printalias(name); } else for (p = afs; p->af_name; p++) { ifr.ifr_addr.sa_family = p->af_af; (*p->af_status)(0); if (Aflag & !aflag && p->af_af == AF_INET) printalias(name); } } void in_alias(creq) struct ifreq *creq; { struct sockaddr_in *sin; if (lflag) return; /* Get the non-alias address for this interface. */ getsock(AF_INET); 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) { return; } else warn("SIOCGIFADDR"); } /* If creq and ifr are the same address, this is not an alias. */ if (memcmp(&ifr.ifr_addr, &creq->ifr_addr, sizeof(creq->ifr_addr)) == 0) return; (void) memset(&addreq, 0, sizeof(addreq)); (void) strncpy(addreq.ifra_name, name, sizeof(addreq.ifra_name)); addreq.ifra_addr = creq->ifr_addr; if (ioctl(s, SIOCGIFALIAS, (caddr_t)&addreq) < 0) { if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) { return; } else warn("SIOCGIFALIAS"); } sin = (struct sockaddr_in *)&addreq.ifra_addr; printf("\tinet alias %s", inet_ntoa(sin->sin_addr)); if (flags & IFF_POINTOPOINT) { sin = (struct sockaddr_in *)&addreq.ifra_dstaddr; printf(" -> %s", inet_ntoa(sin->sin_addr)); } sin = (struct sockaddr_in *)&addreq.ifra_mask; printf(" netmask 0x%x", ntohl(sin->sin_addr.s_addr)); if (flags & IFF_BROADCAST) { sin = (struct sockaddr_in *)&addreq.ifra_broadaddr; printf(" broadcast %s", inet_ntoa(sin->sin_addr)); } printf("\n"); } void in_status(force) int force; { struct sockaddr_in *sin; getsock(AF_INET); 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)); sin = (struct sockaddr_in *)&ifr.ifr_addr; printf("\tinet %s ", inet_ntoa(sin->sin_addr)); (void) strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) { if (errno != EADDRNOTAVAIL) warn("SIOCGIFNETMASK"); (void) 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) (void) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFDSTADDR"); } (void) 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) (void) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFBRDADDR"); } (void) 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("\tatalk %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"); } (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; memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); } else warn("SIOCGIFADDR"); } (void) 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"); } (void) 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 iso_status(force) int force; { struct sockaddr_iso *siso; getsock(AF_ISO); 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); siso = (struct sockaddr_iso *)&ifr.ifr_addr; printf("\tiso %s ", iso_ntoa(&siso->siso_addr)); if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) { if (errno == EADDRNOTAVAIL) memset(&ifr.ifr_addr, 0, sizeof(ifr.ifr_addr)); else warn("SIOCGIFNETMASK"); } else { printf(" netmask %s ", iso_ntoa(&siso->siso_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"); } (void) strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); siso = (struct sockaddr_iso *)&ifr.ifr_addr; printf("--> %s ", iso_ntoa(&siso->siso_addr)); } putchar('\n'); } #endif /* INET_ONLY */ #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; { 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)) != NULL) (void) memcpy(&sin->sin_addr, hp->h_addr, hp->h_length); else if ((np = getnetbyname(s)) != NULL) 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; char *bits; unsigned short v; { int i, any = 0; char c; if (bits && *bits == 8) printf("%s=%o", s, v); else printf("%s=%x", s, v); bits++; if (bits) { putchar('<'); while ((i = *bits++) != 0) { 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) at_nr.nr_firstnet = /* Default range of one */ 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]; sns->sns_family = AF_NS; sns->sns_len = sizeof(*sns); sns->sns_addr = ns_addr(addr); if (which == MASK) puts("Attempt to set XNS netmask will be ineffectual"); } #define SISO(x) ((struct sockaddr_iso *) &(x)) struct sockaddr_iso *sisotab[] = { SISO(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; { struct sockaddr_iso *siso = sisotab[which]; 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, d) char *val; int d; { iso_addreq.ifra_snpaoffset = atoi(val); } void setnsellength(val, d) char *val; int d; { 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) 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 [ -m ] [ -A ] interface\n%s%s%s%s%s%s%s%s%s%s%s%s", "\t[ af [ address [ dest_addr ] ] [ up ] [ down ] ", "[ netmask mask ] ]\n", "\t[ metric n ]\n", "\t[ mtu n ]\n", "\t[ arp | -arp ]\n", "\t[ media mtype ]\n", "\t[ mediaopt mopts ]\n", "\t[ -mediaopt mopts ]\n", "\t[ instance minst ]\n", "\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n", " ifconfig -a [ -A ] [ -m ] [ -d ] [ -u ] [ af ]\n", " ifconfig -l [ -d ] [ -u ]\n"); exit(1); }