/* $NetBSD: ifconfig.c,v 1.181 2007/12/16 13:49:22 degroote Exp $ */ /*- * Copyright (c) 1997, 1998, 2000 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. 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 1.181 2007/12/16 13:49:22 degroote Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include /* XXX */ #include /* XXX */ #include #include #include #include #include #include #include #include #include #include #include #include #include "extern.h" #ifndef INET_ONLY #include "af_atalk.h" #include "af_iso.h" #endif /* ! INET_ONLY */ #include "af_inet.h" #ifdef INET6 #include "af_inet6.h" #endif /* INET6 */ #include "agr.h" #include "carp.h" #include "ieee80211.h" #include "tunnel.h" #include "vlan.h" struct ifreq ifr, ridreq; struct ifaliasreq addreq __attribute__((aligned(4))); char name[30]; u_short flags; int setaddr, doalias; u_long metric, mtu, preference; int clearaddr, s; int newaddr = -1; int conflicting = 0; int check_up_state = -1; int af; int aflag, bflag, Cflag, dflag, lflag, mflag, sflag, uflag, vflag, zflag; int hflag; int have_preference = 0; #ifdef INET6 int Lflag; #endif int explicit_prefix = 0; struct ifcapreq g_ifcr; int g_ifcr_updated; void notealias(const char *, int); void notrailers(const char *, int); void setifaddr(const char *, int); void setifdstaddr(const char *, int); void setifflags(const char *, int); void check_ifflags_up(const char *); void setifcaps(const char *, int); void setifbroadaddr(const char *, int); void setifipdst(const char *, int); void setifmetric(const char *, int); void setifpreference(const char *, int); void setifmtu(const char *, int); void setifnetmask(const char *, int); void setifprefixlen(const char *, int); void setmedia(const char *, int); void setmediamode(const char *, int); void setmediaopt(const char *, int); void unsetmediaopt(const char *, int); void setmediainst(const char *, int); void clone_create(const char *, int); void clone_destroy(const char *, int); int main(int, char *[]); void do_setifpreference(void); /* * 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 A_MEDIAMODE 0x0010 /* mode command */ #define NEXTARG 0xffffff #define NEXTARG2 0xfffffe const struct cmd { const char *c_name; int c_parameter; /* NEXTARG means next argv */ int c_action; /* defered action */ void (*c_func)(const 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 }, { "bssid", NEXTARG, 0, setifbssid }, { "-bssid", -1, 0, setifbssid }, { "chan", NEXTARG, 0, setifchan }, { "-chan", -1, 0, setifchan }, { "frag", NEXTARG, 0, setiffrag }, { "-frag", -1, 0, setiffrag }, { "ssid", NEXTARG, 0, setifnwid }, { "nwid", NEXTARG, 0, setifnwid }, { "nwkey", NEXTARG, 0, setifnwkey }, { "-nwkey", -1, 0, setifnwkey }, { "powersave", 1, 0, setifpowersave }, { "-powersave", 0, 0, setifpowersave }, { "powersavesleep", NEXTARG, 0, setifpowersavesleep }, { "hidessid", 1, 0, sethidessid }, { "-hidessid", 0, 0, sethidessid }, { "apbridge", 1, 0, setapbridge }, { "-apbridge", 0, 0, setapbridge }, { "broadcast", NEXTARG, 0, setifbroadaddr }, { "ipdst", NEXTARG, 0, setifipdst }, { "prefixlen", NEXTARG, 0, setifprefixlen}, { "preference", NEXTARG, 0, setifpreference}, { "list", NEXTARG, 0, setiflist}, #ifndef INET_ONLY /* CARP */ { "advbase", NEXTARG, 0, setcarp_advbase }, { "advskew", NEXTARG, 0, setcarp_advskew }, { "pass", NEXTARG, 0, setcarp_passwd }, { "vhid", NEXTARG, 0, setcarp_vhid }, { "state", NEXTARG, 0, setcarp_state }, { "carpdev", NEXTARG, 0, setcarpdev }, { "-carpdev", 1, 0, unsetcarpdev }, #endif #ifdef INET6 { "anycast", IN6_IFF_ANYCAST, 0, setia6flags }, { "-anycast", -IN6_IFF_ANYCAST, 0, setia6flags }, { "tentative", IN6_IFF_TENTATIVE, 0, setia6flags }, { "-tentative", -IN6_IFF_TENTATIVE, 0, setia6flags }, { "deprecated", IN6_IFF_DEPRECATED, 0, setia6flags }, { "-deprecated", -IN6_IFF_DEPRECATED, 0, setia6flags }, { "pltime", NEXTARG, 0, setia6pltime }, { "vltime", NEXTARG, 0, setia6vltime }, { "eui64", 0, 0, setia6eui64 }, #endif /*INET6*/ #ifndef INET_ONLY { "range", NEXTARG, 0, setatrange }, { "phase", NEXTARG, 0, setatphase }, { "snpaoffset", NEXTARG, 0, setsnpaoffset }, { "nsellength", NEXTARG, 0, setnsellength }, #endif /* INET_ONLY */ { "tunnel", NEXTARG2, 0, (void (*)(const char *, int)) settunnel } , { "deletetunnel", 0, 0, deletetunnel }, { "vlan", NEXTARG, 0, setvlan } , { "vlanif", NEXTARG, 0, setvlanif } , { "-vlanif", 0, 0, unsetvlanif } , #if 0 /* XXX `create' special-cased below */ { "create", 0, 0, clone_create } , #endif { "destroy", 0, 0, clone_destroy } , { "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 }, { "mode", NEXTARG, A_MEDIAMODE, setmediamode }, { "instance", NEXTARG, A_MEDIAINST, setmediainst }, { "inst", NEXTARG, A_MEDIAINST, setmediainst }, { "ip4csum-tx", IFCAP_CSUM_IPv4_Tx,0, setifcaps }, { "-ip4csum-tx",-IFCAP_CSUM_IPv4_Tx,0, setifcaps }, { "ip4csum-rx", IFCAP_CSUM_IPv4_Rx,0, setifcaps }, { "-ip4csum-rx",-IFCAP_CSUM_IPv4_Rx,0, setifcaps }, { "tcp4csum-tx",IFCAP_CSUM_TCPv4_Tx,0, setifcaps }, { "-tcp4csum-tx",-IFCAP_CSUM_TCPv4_Tx,0, setifcaps }, { "tcp4csum-rx",IFCAP_CSUM_TCPv4_Rx,0, setifcaps }, { "-tcp4csum-rx",-IFCAP_CSUM_TCPv4_Rx,0, setifcaps }, { "udp4csum-tx",IFCAP_CSUM_UDPv4_Tx,0, setifcaps }, { "-udp4csum-tx",-IFCAP_CSUM_UDPv4_Tx,0, setifcaps }, { "udp4csum-rx",IFCAP_CSUM_UDPv4_Rx,0, setifcaps }, { "-udp4csum-rx",-IFCAP_CSUM_UDPv4_Rx,0, setifcaps }, { "tcp6csum-tx",IFCAP_CSUM_TCPv6_Tx,0, setifcaps }, { "-tcp6csum-tx",-IFCAP_CSUM_TCPv6_Tx,0, setifcaps }, { "tcp6csum-rx",IFCAP_CSUM_TCPv6_Rx,0, setifcaps }, { "-tcp6csum-rx",-IFCAP_CSUM_TCPv6_Rx,0, setifcaps }, { "udp6csum-tx",IFCAP_CSUM_UDPv6_Tx,0, setifcaps }, { "-udp6csum-tx",-IFCAP_CSUM_UDPv6_Tx,0, setifcaps }, { "udp6csum-rx",IFCAP_CSUM_UDPv6_Rx,0, setifcaps }, { "-udp6csum-rx",-IFCAP_CSUM_UDPv6_Rx,0, setifcaps }, { "ip4csum", IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx, 0, setifcaps }, { "-ip4csum", -(IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx), 0, setifcaps }, { "tcp4csum", IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx, 0, setifcaps }, { "-tcp4csum", -(IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx), 0, setifcaps }, { "udp4csum", IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx, 0, setifcaps }, { "-udp4csum", -(IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx), 0, setifcaps }, { "tcp6csum", IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx, 0, setifcaps }, { "-tcp6csum", -(IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx), 0, setifcaps }, { "udp6csum", IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx, 0, setifcaps }, { "-udp6csum", -(IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx), 0, setifcaps }, { "tso4", IFCAP_TSOv4, 0, setifcaps }, { "-tso4", -IFCAP_TSOv4, 0, setifcaps }, { "tso6", IFCAP_TSOv6, 0, setifcaps }, { "-tso6", -IFCAP_TSOv6, 0, setifcaps }, { "agrport", NEXTARG, 0, agraddport } , { "-agrport", NEXTARG, 0, agrremport } , { 0, 0, 0, setifaddr }, { 0, 0, 0, setifdstaddr }, }; int getinfo(struct ifreq *); int carrier(void); void printall(const char *); void list_cloners(void); void status(const struct sockaddr_dl *); void usage(void); void print_media_word(int, const char *); void process_media_commands(void); void init_current_media(void); /* Known address families */ const struct afswtch afs[] = { { "inet", AF_INET, in_status, in_getaddr, in_getprefix, SIOCDIFADDR, SIOCAIFADDR, SIOCGIFADDR, &ridreq, &in_addreq }, #ifdef INET6 { "inet6", AF_INET6, in6_status, in6_getaddr, in6_getprefix, SIOCDIFADDR_IN6, SIOCAIFADDR_IN6, /* * Deleting the first address before setting new one is * not prefered way in this protocol. */ 0, &in6_ridreq, &in6_addreq }, #endif #ifndef INET_ONLY /* small version, for boot media */ { "atalk", AF_APPLETALK, at_status, at_getaddr, NULL, SIOCDIFADDR, SIOCAIFADDR, SIOCGIFADDR, &addreq, &addreq }, { "iso", AF_ISO, iso_status, iso_getaddr, NULL, SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, SIOCGIFADDR_ISO, &iso_ridreq, &iso_addreq }, #endif /* INET_ONLY */ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }; const struct afswtch *afp; /*the address family being set or asked about*/ int main(int argc, char *argv[]) { int ch; /* Parse command-line options */ aflag = mflag = vflag = zflag = 0; while ((ch = getopt(argc, argv, "AabCdhlmsuvz" #ifdef INET6 "L" #endif )) != -1) { switch (ch) { case 'A': warnx("-A is deprecated"); break; case 'a': aflag = 1; break; case 'b': bflag = 1; break; case 'C': Cflag = 1; break; case 'd': dflag = 1; break; case 'h': hflag = 1; break; #ifdef INET6 case 'L': Lflag = 1; break; #endif case 'l': lflag = 1; break; case 'm': mflag = 1; break; case 's': sflag = 1; break; case 'u': uflag = 1; break; case 'v': vflag = 1; break; case 'z': zflag = 1; break; default: usage(); /* NOTREACHED */ } } argc -= optind; argv += optind; /* * -l means "list all interfaces", and is mutally exclusive with * all other flags/commands. * * -C means "list all names of cloners", and it mutually exclusive * with all other flags/commands. * * -a means "print status of all interfaces". */ if ((lflag || Cflag) && (aflag || mflag || vflag || argc || zflag)) usage(); #ifdef INET6 if ((lflag || Cflag) && Lflag) usage(); #endif if (lflag && Cflag) usage(); if (Cflag) { if (argc) usage(); list_cloners(); exit(0); } if (aflag || lflag) { if (argc > 1) usage(); else if (argc == 1) { afp = lookup_af_byname(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(NULL); exit(0); } /* Make sure there's an interface name. */ if (argc < 1) usage(); if (strlcpy(name, argv[0], sizeof(name)) >= sizeof(name)) errx(1, "interface name '%s' too long", argv[0]); argc--; argv++; /* * NOTE: We must special-case the `create' command right * here as we would otherwise fail in getinfo(). */ if (argc > 0 && strcmp(argv[0], "create") == 0) { clone_create(argv[0], 0); argc--, argv++; if (argc == 0) exit(0); } /* Check for address family. */ afp = NULL; if (argc > 0) { afp = lookup_af_byname(argv[0]); if (afp != NULL) { argv++; argc--; } } /* Initialize af, just for use in getinfo(). */ if (afp == NULL) af = afs->af_af; else af = afp->af_af; /* Get information about the interface. */ estrlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (getinfo(&ifr) < 0) exit(1); if (sflag) { if (argc != 0) usage(); else exit(carrier()); } /* No more arguments means interface status. */ if (argc == 0) { printall(name); exit(0); } /* The following operations assume inet family as the default. */ if (afp == NULL) afp = afs; af = ifr.ifr_addr.sa_family = afp->af_af; #ifdef INET6 in6_init(); #endif /* Process commands. */ while (argc > 0) { const 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) { if ((flags & IFF_POINTOPOINT) == 0) { errx(EXIT_FAILURE, "can't set destination address %s", "on non-point-to-point link"); } p++; /* got src, do dst */ } if (p->c_func != NULL) { if (p->c_parameter == NEXTARG) { if (argc < 2) errx(EXIT_FAILURE, "'%s' requires argument", p->c_name); (*p->c_func)(argv[1], 0); argc--, argv++; } else if (p->c_parameter == NEXTARG2) { if (argc < 3) errx(EXIT_FAILURE, "'%s' requires 2 arguments", p->c_name); ((void (*)(const char *, const char *)) *p->c_func)(argv[1], argv[2]); argc -= 2, argv += 2; } else (*p->c_func)(argv[0], p->c_parameter); actions |= p->c_action; } argc--, argv++; } /* * See if multiple alias, -alias, or delete commands were * specified. More than one constitutes an invalid command line */ if (conflicting > 1) errx(EXIT_FAILURE, "Only one use of alias, -alias or delete is valid."); /* Process any media commands that may have been issued. */ process_media_commands(); if (af == AF_INET6 && explicit_prefix == 0) { /* * Aggregatable address architecture defines all prefixes * are 64. So, it is convenient to set prefixlen to 64 if * it is not specified. */ setifprefixlen("64", 0); /* in6_getprefix("64", MASK) if MASK is available here... */ } #ifndef INET_ONLY if (af == AF_ISO) adjust_nsellength(); if (af == AF_APPLETALK) checkatrange(&addreq.ifra_addr); #endif /* INET_ONLY */ if (clearaddr) { estrlcpy(afp->af_ridreq, name, sizeof ifr.ifr_name); if (ioctl(s, afp->af_difaddr, afp->af_ridreq) == -1) err(EXIT_FAILURE, "SIOCDIFADDR"); } if (newaddr > 0) { estrlcpy(afp->af_addreq, name, sizeof ifr.ifr_name); if (ioctl(s, afp->af_aifaddr, afp->af_addreq) == -1) warn("SIOCAIFADDR"); else if (check_up_state < 0) check_up_state = 1; } if (have_preference) do_setifpreference(); if (g_ifcr_updated) { strlcpy(g_ifcr.ifcr_name, name, sizeof(g_ifcr.ifcr_name)); if (ioctl(s, SIOCSIFCAP, &g_ifcr) == -1) err(EXIT_FAILURE, "SIOCSIFCAP"); } if (check_up_state == 1) check_ifflags_up(name); exit(0); } const struct afswtch * lookup_af_byname(const char *cp) { const struct afswtch *a; for (a = afs; a->af_name != NULL; a++) if (strcmp(a->af_name, cp) == 0) return (a); return (NULL); } const struct afswtch * lookup_af_bynum(int afnum) { const struct afswtch *a; for (a = afs; a->af_name != NULL; a++) if (a->af_af == afnum) return (a); return (NULL); } void getsock(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(struct ifreq *giifr) { getsock(af); if (s < 0) err(EXIT_FAILURE, "socket"); if (ioctl(s, SIOCGIFFLAGS, giifr) == -1) { warn("SIOCGIFFLAGS %s", giifr->ifr_name); return (-1); } flags = giifr->ifr_flags; if (ioctl(s, SIOCGIFMETRIC, giifr) == -1) { warn("SIOCGIFMETRIC %s", giifr->ifr_name); metric = 0; } else metric = giifr->ifr_metric; if (ioctl(s, SIOCGIFMTU, giifr) == -1) mtu = 0; else mtu = giifr->ifr_mtu; memset(&g_ifcr, 0, sizeof(g_ifcr)); estrlcpy(g_ifcr.ifcr_name, giifr->ifr_name, sizeof(g_ifcr.ifcr_name)); (void) ioctl(s, SIOCGIFCAP, &g_ifcr); return (0); } void printall(const char *ifname) { struct ifaddrs *ifap, *ifa; struct ifreq paifr; const struct sockaddr_dl *sdl = NULL; int idx; char *p; if (getifaddrs(&ifap) != 0) err(EXIT_FAILURE, "getifaddrs"); p = NULL; idx = 0; for (ifa = ifap; ifa; ifa = ifa->ifa_next) { memset(&paifr, 0, sizeof(paifr)); estrlcpy(paifr.ifr_name, ifa->ifa_name, sizeof(paifr.ifr_name)); if (sizeof(paifr.ifr_addr) >= ifa->ifa_addr->sa_len) { memcpy(&paifr.ifr_addr, ifa->ifa_addr, ifa->ifa_addr->sa_len); } if (ifname && strcmp(ifname, ifa->ifa_name) != 0) continue; if (ifa->ifa_addr->sa_family == AF_LINK) sdl = (const struct sockaddr_dl *) ifa->ifa_addr; if (p && strcmp(p, ifa->ifa_name) == 0) continue; if (strlcpy(name, ifa->ifa_name, sizeof(name)) >= sizeof(name)) continue; p = ifa->ifa_name; if (getinfo(&paifr) < 0) continue; if (bflag && (ifa->ifa_flags & IFF_BROADCAST) == 0) continue; if (dflag && (ifa->ifa_flags & IFF_UP) != 0) continue; if (uflag && (ifa->ifa_flags & IFF_UP) == 0) continue; if (sflag && carrier()) continue; idx++; /* * Are we just listing the interfaces? */ if (lflag) { if (idx > 1) printf(" "); fputs(name, stdout); continue; } status(sdl); sdl = NULL; } if (lflag) printf("\n"); freeifaddrs(ifap); } void list_cloners(void) { struct if_clonereq ifcr; char *cp, *buf; int idx; memset(&ifcr, 0, sizeof(ifcr)); getsock(AF_INET); if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1) err(EXIT_FAILURE, "SIOCIFGCLONERS for count"); buf = malloc(ifcr.ifcr_total * IFNAMSIZ); if (buf == NULL) err(EXIT_FAILURE, "unable to allocate cloner name buffer"); ifcr.ifcr_count = ifcr.ifcr_total; ifcr.ifcr_buffer = buf; if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1) err(EXIT_FAILURE, "SIOCIFGCLONERS for names"); /* * In case some disappeared in the mean time, clamp it down. */ if (ifcr.ifcr_count > ifcr.ifcr_total) ifcr.ifcr_count = ifcr.ifcr_total; for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) { if (idx > 0) printf(" "); printf("%s", cp); } printf("\n"); free(buf); return; } /*ARGSUSED*/ void clone_create(const char *addr, int param) { /* We're called early... */ getsock(AF_INET); estrlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(s, SIOCIFCREATE, &ifr) == -1) err(EXIT_FAILURE, "SIOCIFCREATE"); } /*ARGSUSED*/ void clone_destroy(const char *addr, int param) { estrlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); if (ioctl(s, SIOCIFDESTROY, &ifr) == -1) err(EXIT_FAILURE, "SIOCIFDESTROY"); } /*ARGSUSED*/ void setifaddr(const char *addr, int param) { struct ifreq *siifr; /* XXX */ /* * 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 && afp->af_gifaddr != 0) { siifr = (struct ifreq *)afp->af_ridreq; estrlcpy(siifr->ifr_name, name, sizeof(siifr->ifr_name)); siifr->ifr_addr.sa_family = afp->af_af; if (ioctl(s, afp->af_gifaddr, afp->af_ridreq) == 0) clearaddr = 1; else if (errno == EADDRNOTAVAIL) /* No address was assigned yet. */ ; else err(EXIT_FAILURE, "SIOCGIFADDR"); } (*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR)); } void setifnetmask(const char *addr, int d) { (*afp->af_getaddr)(addr, MASK); } void setifbroadaddr(const char *addr, int d) { (*afp->af_getaddr)(addr, DSTADDR); } #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr)) /*ARGSUSED*/ void notealias(const 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; conflicting++; } else { clearaddr = 0; conflicting++; } } /*ARGSUSED*/ void notrailers(const char *vname, int value) { puts("Note: trailers are no longer sent, but always received"); } /*ARGSUSED*/ void setifdstaddr(const char *addr, int param) { (*afp->af_getaddr)(addr, DSTADDR); } void check_ifflags_up(const char *vname) { struct ifreq ifreq; estrlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1) err(EXIT_FAILURE, "SIOCGIFFLAGS"); if (ifreq.ifr_flags & IFF_UP) return; ifreq.ifr_flags |= IFF_UP; if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1) err(EXIT_FAILURE, "SIOCSIFFLAGS"); } void setifflags(const char *vname, int value) { struct ifreq ifreq; estrlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1) err(EXIT_FAILURE, "SIOCGIFFLAGS"); flags = ifreq.ifr_flags; if (value < 0) { value = -value; if (value == IFF_UP) check_up_state = 0; flags &= ~value; } else flags |= value; ifreq.ifr_flags = flags; if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1) err(EXIT_FAILURE, "SIOCSIFFLAGS"); } void setifcaps(const char *vname, int value) { if (value < 0) { value = -value; g_ifcr.ifcr_capenable &= ~value; } else g_ifcr.ifcr_capenable |= value; g_ifcr_updated = 1; } void setifmetric(const char *val, int d) { char *ep = NULL; estrlcpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); ifr.ifr_metric = strtoul(val, &ep, 10); if (!ep || *ep) errx(EXIT_FAILURE, "%s: invalid metric", val); if (ioctl(s, SIOCSIFMETRIC, &ifr) == -1) warn("SIOCSIFMETRIC"); } void setifpreference(const char *val, int d) { char *end = NULL; if (setaddr <= 0) { errx(EXIT_FAILURE, "set address preference: first specify an address"); } preference = strtoul(val, &end, 10); if (end == NULL || *end != '\0' || preference > UINT16_MAX) errx(EXIT_FAILURE, "invalid preference %s", val); have_preference = 1; } void do_setifpreference(void) { struct if_addrprefreq ifap; (void)strncpy(ifap.ifap_name, name, sizeof(ifap.ifap_name)); ifap.ifap_preference = (uint16_t)preference; (void)memcpy(&ifap.ifap_addr, rqtosa(af_addreq), MIN(sizeof(ifap.ifap_addr), rqtosa(af_addreq)->sa_len)); if (ioctl(s, SIOCSIFADDRPREF, &ifap) == -1) warn("SIOCSIFADDRPREF"); } void setifmtu(const char *val, int d) { char *ep = NULL; estrlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_mtu = strtoul(val, &ep, 10); if (!ep || *ep) errx(EXIT_FAILURE, "%s: invalid mtu", val); if (ioctl(s, SIOCSIFMTU, &ifr) == -1) warn("SIOCSIFMTU"); } const char * get_string(const char *val, const char *sep, u_int8_t *buf, int *lenp) { int len; int hexstr; u_int8_t *p; len = *lenp; p = buf; hexstr = (val[0] == '0' && tolower((u_char)val[1]) == 'x'); if (hexstr) val += 2; for (;;) { if (*val == '\0') break; if (sep != NULL && strchr(sep, *val) != NULL) { val++; break; } if (hexstr) { if (!isxdigit((u_char)val[0]) || !isxdigit((u_char)val[1])) { warnx("bad hexadecimal digits"); return NULL; } } if (p > buf + len) { if (hexstr) warnx("hexadecimal digits too long"); else warnx("strings too long"); return NULL; } if (hexstr) { #define tohex(x) (isdigit(x) ? (x) - '0' : tolower(x) - 'a' + 10) *p++ = (tohex((u_char)val[0]) << 4) | tohex((u_char)val[1]); #undef tohex val += 2; } else *p++ = *val++; } len = p - buf; if (len < *lenp) memset(p, 0, *lenp - len); *lenp = len; return val; } void print_string(const u_int8_t *buf, int len) { int i; int hasspc; i = 0; hasspc = 0; if (len < 2 || buf[0] != '0' || tolower(buf[1]) != 'x') { for (; i < len; i++) { if (!isprint(buf[i])) break; if (isspace(buf[i])) hasspc++; } } if (i == len) { if (hasspc || len == 0) printf("\"%.*s\"", len, buf); else printf("%.*s", len, buf); } else { printf("0x"); for (i = 0; i < len; i++) printf("%02x", buf[i]); } } static void media_error(int type, const char *val, const char *opt) { errx(EXIT_FAILURE, "unknown %s media %s: %s", get_media_type_string(type), opt, val); } void init_current_media(void) { struct ifmediareq ifmr; /* * If we have not yet done so, grab the currently-selected * media. */ if ((actions & (A_MEDIA|A_MEDIAOPT|A_MEDIAMODE)) == 0) { (void) memset(&ifmr, 0, sizeof(ifmr)); estrlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name)); if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) { /* * If we get E2BIG, the kernel is telling us * that there are more, so we can ignore it. */ if (errno != E2BIG) err(EXIT_FAILURE, "SGIOCGIFMEDIA"); } media_current = ifmr.ifm_current; } /* Sanity. */ if (IFM_TYPE(media_current) == 0) errx(EXIT_FAILURE, "%s: no link type?", name); } void process_media_commands(void) { if ((actions & (A_MEDIA|A_MEDIAOPT|A_MEDIAMODE)) == 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; estrlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); ifr.ifr_media = media_current; if (ioctl(s, SIOCSIFMEDIA, &ifr) == -1) err(EXIT_FAILURE, "SIOCSIFMEDIA"); } void setmedia(const char *val, int d) { int type, subtype, inst; init_current_media(); /* Only one media command may be given. */ if (actions & A_MEDIA) errx(EXIT_FAILURE, "only one `media' command may be issued"); /* Must not come after mode commands */ if (actions & A_MEDIAMODE) errx(EXIT_FAILURE, "may not issue `media' after `mode' commands"); /* Must not come after mediaopt commands */ if (actions & A_MEDIAOPT) errx(EXIT_FAILURE, "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); if (subtype == -1) media_error(type, val, "subtype"); /* 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(const char *val, int d) { char *invalid; init_current_media(); /* Can only issue `mediaopt' once. */ if (actions & A_MEDIAOPTSET) errx(EXIT_FAILURE, "only one `mediaopt' command may be issued"); /* Can't issue `mediaopt' if `instance' has already been issued. */ if (actions & A_MEDIAINST) errx(EXIT_FAILURE, "may not issue `mediaopt' after `instance'"); mediaopt_set = get_media_options(media_current, val, &invalid); if (mediaopt_set == -1) media_error(media_current, invalid, "option"); /* Media will be set after other processing is complete. */ } void unsetmediaopt(const char *val, int d) { char *invalid; init_current_media(); /* Can only issue `-mediaopt' once. */ if (actions & A_MEDIAOPTCLR) errx(EXIT_FAILURE, "only one `-mediaopt' command may be issued"); /* May not issue `media' and `-mediaopt'. */ if (actions & A_MEDIA) errx(EXIT_FAILURE, "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(media_current, val, &invalid); if (mediaopt_clear == -1) media_error(media_current, invalid, "option"); /* Media will be set after other processing is complete. */ } void setmediainst(const char *val, int d) { int type, subtype, options, inst; init_current_media(); /* Can only issue `instance' once. */ if (actions & A_MEDIAINST) errx(EXIT_FAILURE, "only one `instance' command may be issued"); /* Must have already specified `media' */ if ((actions & A_MEDIA) == 0) errx(EXIT_FAILURE, "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(EXIT_FAILURE, "invalid media instance: %s", val); media_current = IFM_MAKEWORD(type, subtype, options, inst); /* Media will be set after other processing is complete. */ } void setmediamode(const char *val, int d) { int type, subtype, options, inst, mode; init_current_media(); /* Can only issue `mode' once. */ if (actions & A_MEDIAMODE) errx(EXIT_FAILURE, "only one `mode' command may be issued"); type = IFM_TYPE(media_current); subtype = IFM_SUBTYPE(media_current); options = IFM_OPTIONS(media_current); inst = IFM_INST(media_current); mode = get_media_mode(type, val); if (mode == -1) media_error(type, val, "mode"); media_current = IFM_MAKEWORD(type, subtype, options, inst) | mode; /* Media will be set after other processing is complete. */ } void print_media_word(int ifmw, const char *opt_sep) { const char *str; printf("%s", get_media_subtype_string(ifmw)); /* Find mode. */ if (IFM_MODE(ifmw) != 0) { str = get_media_mode_string(ifmw); if (str != NULL) printf(" mode %s", str); } /* Find options. */ for (; (str = get_media_option_string(&ifmw)) != NULL; opt_sep = ",") printf("%s%s", opt_sep, str); if (IFM_INST(ifmw) != 0) printf(" instance %d", IFM_INST(ifmw)); } int carrier(void) { struct ifmediareq ifmr; (void) memset(&ifmr, 0, sizeof(ifmr)); estrlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name)); if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) { /* * Interface doesn't support SIOC{G,S}IFMEDIA; * assume ok. */ return 0; } if ((ifmr.ifm_status & IFM_AVALID) == 0) { /* * Interface doesn't report media-valid status. * assume ok. */ return 0; } /* otherwise, return ok for active, not-ok if not active. */ return !(ifmr.ifm_status & IFM_ACTIVE); } const int ifm_status_valid_list[] = IFM_STATUS_VALID_LIST; const struct ifmedia_status_description ifm_status_descriptions[] = IFM_STATUS_DESCRIPTIONS; /* * Print the status of the interface. If an address family was * specified, show it and it only; otherwise, show them all. */ void status(const struct sockaddr_dl *sdl) { const struct afswtch *p = afp; struct ifmediareq ifmr; struct ifdatareq ifdr; int *media_list, i; char hbuf[NI_MAXHOST]; char fbuf[BUFSIZ]; (void)snprintb(fbuf, sizeof(fbuf), IFFBITS, flags); printf("%s: flags=%s", name, &fbuf[2]); if (metric) printf(" metric %lu", metric); if (mtu) printf(" mtu %lu", mtu); printf("\n"); if (g_ifcr.ifcr_capabilities) { (void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS, g_ifcr.ifcr_capabilities); printf("\tcapabilities=%s\n", &fbuf[2]); (void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS, g_ifcr.ifcr_capenable); printf("\tenabled=%s\n", &fbuf[2]); } ieee80211_status(); vlan_status(); #ifndef INET_ONLY carp_status(); #endif tunnel_status(); agr_status(); if (sdl != NULL && getnameinfo((const struct sockaddr *)sdl, sdl->sdl_len, hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) == 0 && hbuf[0] != '\0') printf("\taddress: %s\n", hbuf); (void) memset(&ifmr, 0, sizeof(ifmr)); estrlcpy(ifmr.ifm_name, name, sizeof(ifmr.ifm_name)); if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) { /* * Interface doesn't support SIOC{G,S}IFMEDIA. */ goto iface_stats; } if (ifmr.ifm_count == 0) { warnx("%s: no media types?", name); goto iface_stats; } media_list = (int *)malloc(ifmr.ifm_count * sizeof(int)); if (media_list == NULL) err(EXIT_FAILURE, "malloc"); ifmr.ifm_ulist = media_list; if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) err(EXIT_FAILURE, "SIOCGIFMEDIA"); printf("\tmedia: %s ", get_media_type_string(ifmr.ifm_current)); print_media_word(ifmr.ifm_current, " "); if (ifmr.ifm_active != ifmr.ifm_current) { printf(" ("); print_media_word(ifmr.ifm_active, " "); printf(")"); } printf("\n"); if (ifmr.ifm_status & IFM_STATUS_VALID) { const struct ifmedia_status_description *ifms; int bitno, found = 0; printf("\tstatus: "); for (bitno = 0; ifm_status_valid_list[bitno] != 0; bitno++) { for (ifms = ifm_status_descriptions; ifms->ifms_valid != 0; ifms++) { if (ifms->ifms_type != IFM_TYPE(ifmr.ifm_current) || ifms->ifms_valid != ifm_status_valid_list[bitno]) continue; printf("%s%s", found ? ", " : "", IFM_STATUS_DESC(ifms, ifmr.ifm_status)); found = 1; /* * For each valid indicator bit, there's * only one entry for each media type, so * terminate the inner loop now. */ break; } } if (found == 0) printf("unknown"); printf("\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) continue; if (printed_type == 0) { printf("\tsupported %s media:\n", get_media_type_string(type)); printed_type = 1; } printf("\t\tmedia "); print_media_word(media_list[i], " mediaopt "); printf("\n"); } } } free(media_list); iface_stats: if (!vflag && !zflag) goto proto_status; estrlcpy(ifdr.ifdr_name, name, sizeof(ifdr.ifdr_name)); if (ioctl(s, zflag ? SIOCZIFDATA:SIOCGIFDATA, &ifdr) == -1) { err(EXIT_FAILURE, zflag ? "SIOCZIFDATA" : "SIOCGIFDATA"); } else { struct if_data * const ifi = &ifdr.ifdr_data; char buf[5]; #define PLURAL(n) ((n) == 1 ? "" : "s") #define PLURALSTR(s) ((atof(s)) == 1.0 ? "" : "s") printf("\tinput: %llu packet%s, ", (unsigned long long) ifi->ifi_ipackets, PLURAL(ifi->ifi_ipackets)); if (hflag) { (void) humanize_number(buf, sizeof(buf), (int64_t) ifi->ifi_ibytes, "", HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); printf("%s byte%s", buf, PLURALSTR(buf)); } else printf("%llu byte%s", (unsigned long long) ifi->ifi_ibytes, PLURAL(ifi->ifi_ibytes)); if (ifi->ifi_imcasts) printf(", %llu multicast%s", (unsigned long long) ifi->ifi_imcasts, PLURAL(ifi->ifi_imcasts)); if (ifi->ifi_ierrors) printf(", %llu error%s", (unsigned long long) ifi->ifi_ierrors, PLURAL(ifi->ifi_ierrors)); if (ifi->ifi_iqdrops) printf(", %llu queue drop%s", (unsigned long long) ifi->ifi_iqdrops, PLURAL(ifi->ifi_iqdrops)); if (ifi->ifi_noproto) printf(", %llu unknown protocol", (unsigned long long) ifi->ifi_noproto); printf("\n\toutput: %llu packet%s, ", (unsigned long long) ifi->ifi_opackets, PLURAL(ifi->ifi_opackets)); if (hflag) { (void) humanize_number(buf, sizeof(buf), (int64_t) ifi->ifi_obytes, "", HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL); printf("%s byte%s", buf, PLURALSTR(buf)); } else printf("%llu byte%s", (unsigned long long) ifi->ifi_obytes, PLURAL(ifi->ifi_obytes)); if (ifi->ifi_omcasts) printf(", %llu multicast%s", (unsigned long long) ifi->ifi_omcasts, PLURAL(ifi->ifi_omcasts)); if (ifi->ifi_oerrors) printf(", %llu error%s", (unsigned long long) ifi->ifi_oerrors, PLURAL(ifi->ifi_oerrors)); if (ifi->ifi_collisions) printf(", %llu collision%s", (unsigned long long) ifi->ifi_collisions, PLURAL(ifi->ifi_collisions)); printf("\n"); #undef PLURAL #undef PLURALSTR } ieee80211_statistics(); proto_status: 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 setifprefixlen(const char *addr, int d) { if (*afp->af_getprefix) (*afp->af_getprefix)(addr, MASK); explicit_prefix = 1; } void usage(void) { const char *progname = getprogname(); fprintf(stderr, "usage: %s [-h] [-m] [-v] [-z] " #ifdef INET6 "[-L] " #endif "interface\n" "\t[ af [ address [ dest_addr ] ] [ netmask mask ] [ prefixlen n ]\n" "\t\t[ alias | -alias ] ]\n" "\t[ up ] [ down ] [ metric n ] [ mtu n ]\n" "\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n" "\t[ list scan ]\n" "\t[ powersave | -powersave ] [ powersavesleep duration ]\n" "\t[ hidessid | -hidessid ] [ apbridge | -apbridge ]\n" "\t[ [ af ] tunnel src_addr dest_addr ] [ deletetunnel ]\n" "\t[ arp | -arp ]\n" "\t[ media type ] [ mediaopt opts ] [ -mediaopt opts ] " "[ instance minst ]\n" "\t[ preference n ]\n" "\t[ vlan n vlanif i ]\n" "\t[ agrport i ] [ -agrport i ]\n" "\t[ anycast | -anycast ] [ deprecated | -deprecated ]\n" "\t[ tentative | -tentative ] [ pltime n ] [ vltime n ] [ eui64 ]\n" "\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n" " %s -a [-b] [-h] [-m] [-d] [-u] [-v] [-z] [ af ]\n" " %s -l [-b] [-d] [-u] [-s]\n" " %s -C\n" " %s interface create\n" " %s interface destroy\n", progname, progname, progname, progname, progname, progname); exit(1); }