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ifconfig.c revision 1.196
      1 /*	$NetBSD: ifconfig.c,v 1.196 2008/05/07 20:03:27 dyoung Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * Copyright (c) 1983, 1993
     35  *	The Regents of the University of California.  All rights reserved.
     36  *
     37  * Redistribution and use in source and binary forms, with or without
     38  * modification, are permitted provided that the following conditions
     39  * are met:
     40  * 1. Redistributions of source code must retain the above copyright
     41  *    notice, this list of conditions and the following disclaimer.
     42  * 2. Redistributions in binary form must reproduce the above copyright
     43  *    notice, this list of conditions and the following disclaimer in the
     44  *    documentation and/or other materials provided with the distribution.
     45  * 3. Neither the name of the University nor the names of its contributors
     46  *    may be used to endorse or promote products derived from this software
     47  *    without specific prior written permission.
     48  *
     49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     59  * SUCH DAMAGE.
     60  */
     61 
     62 #include <sys/cdefs.h>
     63 #ifndef lint
     64 __COPYRIGHT("@(#) Copyright (c) 1983, 1993\n\
     65 	The Regents of the University of California.  All rights reserved.\n");
     66 #endif /* not lint */
     67 
     68 #ifndef lint
     69 #if 0
     70 static char sccsid[] = "@(#)ifconfig.c	8.2 (Berkeley) 2/16/94";
     71 #else
     72 __RCSID("$NetBSD: ifconfig.c,v 1.196 2008/05/07 20:03:27 dyoung Exp $");
     73 #endif
     74 #endif /* not lint */
     75 
     76 #include <sys/param.h>
     77 #include <sys/socket.h>
     78 #include <sys/ioctl.h>
     79 
     80 #include <net/if.h>
     81 #include <net/if_dl.h>
     82 #include <net/if_media.h>
     83 #include <net/if_ether.h>
     84 #include <netinet/in.h>		/* XXX */
     85 #include <netinet/in_var.h>	/* XXX */
     86 
     87 #include <netdb.h>
     88 
     89 #include <sys/protosw.h>
     90 
     91 #include <assert.h>
     92 #include <ctype.h>
     93 #include <err.h>
     94 #include <errno.h>
     95 #include <stdbool.h>
     96 #include <stddef.h>
     97 #include <stdio.h>
     98 #include <stdlib.h>
     99 #include <string.h>
    100 #include <unistd.h>
    101 #include <ifaddrs.h>
    102 #include <util.h>
    103 
    104 #include "extern.h"
    105 
    106 #ifndef INET_ONLY
    107 #include "af_atalk.h"
    108 #include "af_iso.h"
    109 #endif /* ! INET_ONLY */
    110 #include "af_inet.h"
    111 #ifdef INET6
    112 #include "af_inet6.h"
    113 #endif /* INET6 */
    114 
    115 #include "agr.h"
    116 #include "carp.h"
    117 #include "ieee80211.h"
    118 #include "tunnel.h"
    119 #include "vlan.h"
    120 #include "parse.h"
    121 #include "env.h"
    122 
    123 int	setaddr, doalias;
    124 int	clearaddr;
    125 int	newaddr = -1;
    126 int	check_up_state = -1;
    127 int	bflag, dflag, hflag, lflag, mflag, sflag, uflag, vflag, zflag;
    128 #ifdef INET6
    129 int	Lflag;
    130 #endif
    131 
    132 /*
    133  * Media stuff.  Whenever a media command is first performed, the
    134  * currently select media is grabbed for this interface.  If `media'
    135  * is given, the current media word is modifed.  `mediaopt' commands
    136  * only modify the set and clear words.  They then operate on the
    137  * current media word later.
    138  */
    139 int	media_current;
    140 int	mediaopt_set;
    141 int	mediaopt_clear;
    142 
    143 void	check_ifflags_up(const char *);
    144 
    145 int 	notealias(prop_dictionary_t, prop_dictionary_t);
    146 int 	notrailers(prop_dictionary_t, prop_dictionary_t);
    147 int 	setifaddr(prop_dictionary_t, prop_dictionary_t);
    148 int 	setifdstormask(prop_dictionary_t, prop_dictionary_t);
    149 int 	setifflags(prop_dictionary_t, prop_dictionary_t);
    150 static int	setifcaps(prop_dictionary_t, prop_dictionary_t);
    151 int 	setifbroadaddr(prop_dictionary_t, prop_dictionary_t);
    152 static int 	setifmetric(prop_dictionary_t, prop_dictionary_t);
    153 static int 	setifmtu(prop_dictionary_t, prop_dictionary_t);
    154 int 	setifnetmask(prop_dictionary_t, prop_dictionary_t);
    155 int	setifprefixlen(prop_dictionary_t, prop_dictionary_t);
    156 int	setmedia(prop_dictionary_t, prop_dictionary_t);
    157 int	setmediamode(prop_dictionary_t, prop_dictionary_t);
    158 int	setmediaopt(prop_dictionary_t, prop_dictionary_t);
    159 int	unsetmediaopt(prop_dictionary_t, prop_dictionary_t);
    160 int	setmediainst(prop_dictionary_t, prop_dictionary_t);
    161 static int	clone_command(prop_dictionary_t, prop_dictionary_t);
    162 static void	do_setifpreference(prop_dictionary_t);
    163 
    164 static int no_cmds_exec(prop_dictionary_t, prop_dictionary_t);
    165 static int media_status_exec(prop_dictionary_t, prop_dictionary_t);
    166 
    167 int	carrier(prop_dictionary_t);
    168 void	printall(const char *, prop_dictionary_t);
    169 int	list_cloners(prop_dictionary_t, prop_dictionary_t);
    170 void 	status(const struct sockaddr_dl *, prop_dictionary_t,
    171     prop_dictionary_t);
    172 void 	usage(void);
    173 
    174 void	print_media_word(int, const char *);
    175 void	process_media_commands(prop_dictionary_t);
    176 void	init_current_media(prop_dictionary_t, prop_dictionary_t);
    177 
    178 /* Known address families */
    179 static const struct afswtch afs[] = {
    180 	  {.af_name = "inet", .af_af = AF_INET, .af_status = in_status,
    181 	   .af_addr_commit = commit_address}
    182 
    183 #ifdef INET6
    184 	, {.af_name = "inet6", .af_af = AF_INET6, .af_status = in6_status,
    185 	   .af_getaddr = in6_getaddr, .af_getprefix = in6_getprefix,
    186 	   .af_difaddr = SIOCDIFADDR_IN6, .af_aifaddr = SIOCAIFADDR_IN6,
    187 	/* Deleting the first address before setting new one is
    188 	 * not prefered way in this protocol.
    189 	 */
    190 	   .af_gifaddr = 0, .af_ridreq = &in6_ridreq, .af_addreq = &in6_addreq}
    191 #endif
    192 
    193 #ifndef INET_ONLY	/* small version, for boot media */
    194 	, {.af_name = "atalk", .af_af = AF_APPLETALK, .af_status = at_status,
    195 	   .af_getaddr = at_getaddr, NULL, .af_difaddr = SIOCDIFADDR,
    196 	   .af_aifaddr = SIOCAIFADDR, .af_gifaddr = SIOCGIFADDR,
    197 	   .af_ridreq = &at_addreq, .af_addreq = &at_addreq}
    198 	, {.af_name = "iso", .af_af = AF_ISO, .af_status = iso_status,
    199 	   .af_getaddr = iso_getaddr, NULL, .af_difaddr = SIOCDIFADDR_ISO,
    200 	   .af_aifaddr = SIOCAIFADDR_ISO, .af_gifaddr = SIOCGIFADDR_ISO,
    201 	   .af_ridreq = &iso_ridreq, .af_addreq = &iso_addreq}
    202 #endif	/* INET_ONLY */
    203 
    204 	, {.af_name = NULL}	/* sentinel */
    205 };
    206 
    207 #define	IFKW(__word, __flag)					\
    208 {								\
    209 	.k_word = (__word), .k_neg = true, .k_type = KW_T_NUM,	\
    210 	.k_num = (__flag),					\
    211 	.k_negnum = -(__flag)					\
    212 }
    213 
    214 struct kwinst ifflagskw[] = {
    215 	  IFKW("arp", IFF_NOARP)
    216 	, IFKW("debug", IFF_DEBUG)
    217 	, IFKW("link0", IFF_LINK0)
    218 	, IFKW("link1", IFF_LINK1)
    219 	, IFKW("link2", IFF_LINK2)
    220 	, {.k_word = "down", .k_type = KW_T_NUM, .k_num = -IFF_UP}
    221 	, {.k_word = "up", .k_type = KW_T_NUM, .k_num = IFF_UP}
    222 };
    223 
    224 struct kwinst ifcapskw[] = {
    225 	  IFKW("ip4csum-tx",	IFCAP_CSUM_IPv4_Tx)
    226 	, IFKW("ip4csum-rx",	IFCAP_CSUM_IPv4_Rx)
    227 	, IFKW("tcp4csum-tx",	IFCAP_CSUM_TCPv4_Tx)
    228 	, IFKW("tcp4csum-rx",	IFCAP_CSUM_TCPv4_Rx)
    229 	, IFKW("udp4csum-tx",	IFCAP_CSUM_UDPv4_Tx)
    230 	, IFKW("udp4csum-rx",	IFCAP_CSUM_UDPv4_Rx)
    231 	, IFKW("tcp6csum-tx",	IFCAP_CSUM_TCPv6_Tx)
    232 	, IFKW("tcp6csum-rx",	IFCAP_CSUM_TCPv6_Rx)
    233 	, IFKW("udp6csum-tx",	IFCAP_CSUM_UDPv6_Tx)
    234 	, IFKW("udp6csum-rx",	IFCAP_CSUM_UDPv6_Rx)
    235 	, IFKW("ip4csum",	IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_IPv4_Rx)
    236 	, IFKW("tcp4csum",	IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_TCPv4_Rx)
    237 	, IFKW("udp4csum",	IFCAP_CSUM_UDPv4_Tx|IFCAP_CSUM_UDPv4_Rx)
    238 	, IFKW("tcp6csum",	IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_TCPv6_Rx)
    239 	, IFKW("udp6csum",	IFCAP_CSUM_UDPv6_Tx|IFCAP_CSUM_UDPv6_Rx)
    240 	, IFKW("tso4",		IFCAP_TSOv4)
    241 	, IFKW("tso6",		IFCAP_TSOv6)
    242 };
    243 
    244 extern struct pbranch command_root;
    245 extern struct pbranch opt_command;
    246 extern struct pbranch opt_family, opt_silent_family;
    247 extern struct pkw cloning, silent_family, family, ia6flags, ia6lifetime,
    248     ifcaps, ifflags, misc;
    249 
    250 struct pinteger parse_metric = PINTEGER_INITIALIZER(&parse_metric, "metric", 10,
    251     setifmetric, "metric", &command_root.pb_parser);
    252 
    253 struct pinteger parse_mtu = PINTEGER_INITIALIZER(&parse_mtu, "mtu", 10,
    254     setifmtu, "mtu", &command_root.pb_parser);
    255 
    256 struct pinteger parse_prefixlen = PINTEGER_INITIALIZER(&parse_prefixlen,
    257     "prefixlen", 10, setifprefixlen, "prefixlen", &command_root.pb_parser);
    258 
    259 struct pinteger parse_preference = PINTEGER_INITIALIZER1(&parse_preference,
    260     "preference", INT16_MIN, INT16_MAX, 10, NULL, "preference",
    261     &command_root.pb_parser);
    262 
    263 struct paddr parse_netmask = PADDR_INITIALIZER(&parse_netmask, "netmask",
    264     setifnetmask, "dstormask", NULL, NULL, NULL, &command_root.pb_parser);
    265 
    266 struct paddr parse_broadcast = PADDR_INITIALIZER(&parse_broadcast,
    267     "broadcast address",
    268     setifbroadaddr, "broadcast", NULL, NULL, NULL, &command_root.pb_parser);
    269 
    270 struct pstr mediamode = PSTR_INITIALIZER(&mediamode, "mediamode",
    271     setmediamode, "mediamode", &command_root.pb_parser);
    272 
    273 struct pinteger mediainst = PINTEGER_INITIALIZER1(&mediainst, "mediainst",
    274     0, IFM_INST_MAX, 10, setmediainst, "mediainst", &command_root.pb_parser);
    275 
    276 struct pstr unmediaopt = PSTR_INITIALIZER(&unmediaopt, "-mediaopt",
    277     unsetmediaopt, "unmediaopt", &command_root.pb_parser);
    278 
    279 struct pstr mediaopt = PSTR_INITIALIZER(&mediaopt, "mediaopt",
    280     setmediaopt, "mediaopt", &command_root.pb_parser);
    281 
    282 struct pstr media = PSTR_INITIALIZER(&media, "media",
    283     setmedia, "media", &command_root.pb_parser);
    284 
    285 struct kwinst misckw[] = {
    286 	  {.k_word = "alias", .k_key = "alias", .k_deact = "alias",
    287 	   .k_type = KW_T_BOOL, .k_neg = true,
    288 	   .k_bool = true, .k_negbool = false,
    289 	   .k_exec = notealias, .k_nextparser = &command_root.pb_parser}
    290 	, {.k_word = "broadcast", .k_nextparser = &parse_broadcast.pa_parser}
    291 	, {.k_word = "delete", .k_key = "alias", .k_deact = "alias",
    292 	   .k_type = KW_T_BOOL, .k_bool = false, .k_exec = notealias,
    293 	   .k_nextparser = &command_root.pb_parser}
    294 	, {.k_word = "instance", .k_key = "anymedia", .k_type = KW_T_BOOL,
    295 	   .k_bool = true, .k_act = "media", .k_deact = "mediainst",
    296 	   .k_nextparser = &mediainst.pi_parser}
    297 	, {.k_word = "inst", .k_key = "anymedia", .k_type = KW_T_BOOL,
    298 	   .k_bool = true, .k_act = "media", .k_deact = "mediainst",
    299 	   .k_nextparser = &mediainst.pi_parser}
    300 	, {.k_word = "media", .k_key = "anymedia", .k_type = KW_T_BOOL,
    301 	   .k_bool = true, .k_deact = "media", .k_altdeact = "anymedia",
    302 	   .k_nextparser = &media.ps_parser}
    303 	, {.k_word = "mediaopt", .k_key = "anymedia", .k_type = KW_T_BOOL,
    304 	   .k_bool = true, .k_deact = "mediaopt", .k_altdeact = "instance",
    305 	   .k_nextparser = &mediaopt.ps_parser}
    306 	, {.k_word = "-mediaopt", .k_key = "anymedia", .k_type = KW_T_BOOL,
    307 	   .k_bool = true, .k_deact = "unmediaopt", .k_altdeact = "media",
    308 	   .k_nextparser = &unmediaopt.ps_parser}
    309 	, {.k_word = "mode", .k_key = "anymedia", .k_type = KW_T_BOOL,
    310 	   .k_bool = true, .k_deact = "mode",
    311 	   .k_nextparser = &mediamode.ps_parser}
    312 	, {.k_word = "metric", .k_nextparser = &parse_metric.pi_parser}
    313 	, {.k_word = "mtu", .k_nextparser = &parse_mtu.pi_parser}
    314 	, {.k_word = "netmask", .k_nextparser = &parse_netmask.pa_parser}
    315 	, {.k_word = "preference", .k_act = "address",
    316 	   .k_nextparser = &parse_preference.pi_parser}
    317 	, {.k_word = "prefixlen", .k_nextparser = &parse_prefixlen.pi_parser}
    318 	, {.k_word = "trailers", .k_neg = true,
    319 	   .k_exec = notrailers, .k_nextparser = &command_root.pb_parser}
    320 	, {.k_word = "vlan", .k_nextparser = &vlan.pi_parser}
    321 	, {.k_word = "vlanif", .k_act = "vlan",
    322 	   .k_nextparser = &vlanif.pif_parser}
    323 	, {.k_word = "-vlanif", .k_key = "vlanif", .k_type = KW_T_STR,
    324 	   .k_str = "", .k_exec = setvlanif}
    325 #ifndef INET_ONLY
    326 	, {.k_word = "phase", .k_nextparser = &phase.pi_parser}
    327 	, {.k_word = "range", .k_nextparser = &parse_range.ps_parser}
    328 	, {.k_word = "nsellength", .k_nextparser = &parse_nsellength.pi_parser}
    329 	, {.k_word = "snpaoffset", .k_nextparser = &parse_snpaoffset.pi_parser}
    330 	/* CARP */
    331 	, {.k_word = "advbase", .k_nextparser = &parse_advbase.pi_parser}
    332 	, {.k_word = "advskew", .k_nextparser = &parse_advskew.pi_parser}
    333 	, {.k_word = "carpdev", .k_nextparser = &carpdev.pif_parser}
    334 	, {.k_word = "-carpdev", .k_key = "carpdev", .k_type = KW_T_STR,
    335 	   .k_str = "", .k_exec = setcarpdev,
    336 	   .k_nextparser = &command_root.pb_parser}
    337 	, {.k_word = "pass", .k_nextparser = &pass.ps_parser}
    338 	, {.k_word = "state", .k_nextparser = &carpstate.pk_parser}
    339 	, {.k_word = "vhid", .k_nextparser = &parse_vhid.pi_parser}
    340 #endif
    341 #ifdef INET6
    342 	, {.k_word = "eui64", .k_exec = setia6eui64,
    343 	   .k_nextparser = &command_root.pb_parser}
    344 #endif /*INET6*/
    345 };
    346 
    347 /* key: clonecmd */
    348 struct kwinst clonekw[] = {
    349 	{.k_word = "create", .k_type = KW_T_NUM, .k_num = SIOCIFCREATE,
    350 	 .k_nextparser = &opt_silent_family.pb_parser},
    351 	{.k_word = "destroy", .k_type = KW_T_NUM, .k_num = SIOCIFDESTROY}
    352 };
    353 
    354 struct kwinst familykw[] = {
    355 	  {.k_word = "inet", .k_type = KW_T_NUM, .k_num = AF_INET,
    356 	   .k_nextparser = NULL}
    357 #ifdef INET6
    358 	, {.k_word = "inet6", .k_type = KW_T_NUM, .k_num = AF_INET6,
    359 	   .k_nextparser = NULL}
    360 #endif
    361 #ifndef INET_ONLY	/* small version, for boot media */
    362 	, {.k_word = "atalk", .k_type = KW_T_NUM, .k_num = AF_APPLETALK,
    363 	   .k_nextparser = NULL}
    364 	, {.k_word = "iso", .k_type = KW_T_NUM, .k_num = AF_ISO,
    365 	   .k_nextparser = NULL}
    366 #endif	/* INET_ONLY */
    367 };
    368 
    369 struct pterm cloneterm = PTERM_INITIALIZER(&cloneterm, "list cloners",
    370     list_cloners, "none");
    371 
    372 struct pterm no_cmds = PTERM_INITIALIZER(&no_cmds, "no commands", no_cmds_exec,
    373     "none");
    374 
    375 struct pkw family_only =
    376     PKW_INITIALIZER(&family_only, "family-only", NULL, "af", familykw,
    377 	__arraycount(familykw), &no_cmds.pt_parser);
    378 
    379 struct paddr address = PADDR_INITIALIZER(&address,
    380     "local address (address 1)",
    381     setifaddr, "address", "netmask", NULL, "address", &command_root.pb_parser);
    382 
    383 struct paddr dstormask = PADDR_INITIALIZER(&dstormask,
    384     "destination/netmask (address 2)",
    385     setifdstormask, "dstormask", NULL, "address", "dstormask",
    386     &command_root.pb_parser);
    387 
    388 struct paddr broadcast = PADDR_INITIALIZER(&broadcast,
    389     "broadcast address (address 3)",
    390     setifbroadaddr, "broadcast", NULL, "dstormask", "broadcast",
    391     &command_root.pb_parser);
    392 
    393 struct branch opt_clone_brs[] = {
    394 	  {.b_nextparser = &cloning.pk_parser}
    395 	, {.b_nextparser = &opt_family.pb_parser}
    396 }, opt_silent_family_brs[] = {
    397 	  {.b_nextparser = &silent_family.pk_parser}
    398 	, {.b_nextparser = &command_root.pb_parser}
    399 }, opt_family_brs[] = {
    400 	  {.b_nextparser = &family.pk_parser}
    401 	, {.b_nextparser = &opt_command.pb_parser}
    402 }, command_root_brs[] = {
    403 	  {.b_nextparser = &ieee80211bool.pk_parser}
    404 	, {.b_nextparser = &ifflags.pk_parser}
    405 	, {.b_nextparser = &ifcaps.pk_parser}
    406 #ifdef INET6
    407 	, {.b_nextparser = &ia6flags.pk_parser}
    408 	, {.b_nextparser = &ia6lifetime.pk_parser}
    409 #endif /*INET6*/
    410 	, {.b_nextparser = &misc.pk_parser}
    411 	, {.b_nextparser = &tunnel.pk_parser}
    412 	, {.b_nextparser = &agr.pk_parser}
    413 	, {.b_nextparser = &kw80211.pk_parser}
    414 	, {.b_nextparser = &address.pa_parser}
    415 	, {.b_nextparser = &dstormask.pa_parser}
    416 	, {.b_nextparser = &broadcast.pa_parser}
    417 	, {.b_nextparser = NULL}
    418 }, opt_command_brs[] = {
    419 	  {.b_nextparser = &no_cmds.pt_parser}
    420 	, {.b_nextparser = &command_root.pb_parser}
    421 };
    422 
    423 struct branch opt_family_only_brs[] = {
    424 	  {.b_nextparser = &no_cmds.pt_parser}
    425 	, {.b_nextparser = &family_only.pk_parser}
    426 };
    427 struct pbranch opt_family_only = PBRANCH_INITIALIZER(&opt_family_only,
    428     "opt-family-only", opt_family_only_brs,
    429     __arraycount(opt_family_only_brs), true);
    430 struct pbranch opt_command = PBRANCH_INITIALIZER(&opt_command,
    431     "optional command",
    432     opt_command_brs, __arraycount(opt_command_brs), true);
    433 
    434 struct pbranch command_root = PBRANCH_INITIALIZER(&command_root,
    435     "command-root", command_root_brs, __arraycount(command_root_brs), true);
    436 
    437 struct piface iface_opt_family_only =
    438     PIFACE_INITIALIZER(&iface_opt_family_only, "iface-opt-family-only",
    439     NULL, "if", &opt_family_only.pb_parser);
    440 
    441 struct pkw family = PKW_INITIALIZER(&family, "family", NULL, "af",
    442     familykw, __arraycount(familykw), &opt_command.pb_parser);
    443 
    444 struct pkw silent_family = PKW_INITIALIZER(&silent_family, "silent family",
    445     NULL, "af", familykw, __arraycount(familykw), &command_root.pb_parser);
    446 
    447 #ifdef INET6
    448 struct kwinst ia6flagskw[] = {
    449 	  IFKW("anycast",	IN6_IFF_ANYCAST)
    450 	, IFKW("tentative",	IN6_IFF_TENTATIVE)
    451 	, IFKW("deprecated",	IN6_IFF_DEPRECATED)
    452 };
    453 
    454 struct pinteger pltime = PINTEGER_INITIALIZER(&pltime, "pltime", 0,
    455     setia6pltime, "pltime", &command_root.pb_parser);
    456 
    457 struct pinteger vltime = PINTEGER_INITIALIZER(&vltime, "vltime", 0,
    458     setia6vltime, "vltime", &command_root.pb_parser);
    459 
    460 struct kwinst ia6lifetimekw[] = {
    461 	  {.k_word = "pltime", .k_nextparser = &pltime.pi_parser}
    462 	, {.k_word = "vltime", .k_nextparser = &vltime.pi_parser}
    463 };
    464 
    465 struct pkw ia6flags = PKW_INITIALIZER(&ia6flags, "ia6flags", setia6flags,
    466     "ia6flag", ia6flagskw, __arraycount(ia6flagskw), &command_root.pb_parser);
    467 struct pkw ia6lifetime = PKW_INITIALIZER(&ia6lifetime, "ia6lifetime", NULL,
    468     NULL, ia6lifetimekw, __arraycount(ia6lifetimekw), NULL);
    469 #endif /*INET6*/
    470 
    471 struct pkw ifcaps = PKW_INITIALIZER(&ifcaps, "ifcaps", setifcaps,
    472     "ifcap", ifcapskw, __arraycount(ifcapskw), &command_root.pb_parser);
    473 
    474 struct pkw ifflags = PKW_INITIALIZER(&ifflags, "ifflags", setifflags,
    475     "ifflag", ifflagskw, __arraycount(ifflagskw), &command_root.pb_parser);
    476 
    477 struct pkw cloning = PKW_INITIALIZER(&cloning, "cloning", clone_command,
    478     "clonecmd", clonekw, __arraycount(clonekw), NULL);
    479 
    480 struct pkw misc = PKW_INITIALIZER(&misc, "misc", NULL, NULL,
    481     misckw, __arraycount(misckw), NULL);
    482 
    483 struct pbranch opt_clone = PBRANCH_INITIALIZER(&opt_clone,
    484     "opt-clone", opt_clone_brs, __arraycount(opt_clone_brs), true);
    485 
    486 struct pbranch opt_silent_family = PBRANCH_INITIALIZER(&opt_silent_family,
    487     "optional silent family", opt_silent_family_brs,
    488     __arraycount(opt_silent_family_brs), true);
    489 
    490 struct pbranch opt_family = PBRANCH_INITIALIZER(&opt_family,
    491     "opt-family", opt_family_brs, __arraycount(opt_family_brs), true);
    492 
    493 struct piface iface_start = PIFACE_INITIALIZER(&iface_start,
    494     "iface-opt-family", NULL, "if", &opt_clone.pb_parser);
    495 
    496 struct piface iface_only = PIFACE_INITIALIZER(&iface_only, "iface",
    497     media_status_exec, "if", NULL);
    498 
    499 static struct parser *
    500 init_parser(void)
    501 {
    502 	if (parser_init(&iface_opt_family_only.pif_parser) == -1)
    503 		err(EXIT_FAILURE, "parser_init(iface_opt_family_only)");
    504 	if (parser_init(&iface_only.pif_parser) == -1)
    505 		err(EXIT_FAILURE, "parser_init(iface_only)");
    506 	if (parser_init(&iface_start.pif_parser) == -1)
    507 		err(EXIT_FAILURE, "parser_init(iface_start)");
    508 
    509 	return &iface_start.pif_parser;
    510 }
    511 
    512 static int
    513 no_cmds_exec(prop_dictionary_t env, prop_dictionary_t xenv)
    514 {
    515 	const char *ifname;
    516 	unsigned short ignore;
    517 
    518 	/* ifname == NULL is ok.  It indicates 'ifconfig -a'. */
    519 	if ((ifname = getifname(env)) == NULL)
    520 		;
    521 	else if (getifflags(env, xenv, &ignore) == -1)
    522 		err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname);
    523 
    524 	printall(ifname, env);
    525 	exit(EXIT_SUCCESS);
    526 }
    527 
    528 static int
    529 media_status_exec(prop_dictionary_t env, prop_dictionary_t xenv)
    530 {
    531 	const char *ifname;
    532 	unsigned short ignore;
    533 
    534 	/* ifname == NULL is ok.  It indicates 'ifconfig -a'. */
    535 	if ((ifname = getifname(env)) == NULL)
    536 		;
    537 	else if (getifflags(env, xenv, &ignore) == -1)
    538 		err(EXIT_FAILURE, "SIOCGIFFLAGS %s", ifname);
    539 
    540 	exit(carrier(env));
    541 }
    542 
    543 static void
    544 do_setifcaps(int s, const char *ifname, prop_dictionary_t env)
    545 {
    546 	struct ifcapreq ifcr;
    547 	prop_data_t d;
    548 
    549 	d = (prop_data_t )prop_dictionary_get(env, "ifcaps");
    550 	if (d == NULL)
    551 		return;
    552 
    553 	assert(sizeof(ifcr) == prop_data_size(d));
    554 
    555 	memcpy(&ifcr, prop_data_data_nocopy(d), sizeof(ifcr));
    556 	estrlcpy(ifcr.ifcr_name, ifname, sizeof(ifcr.ifcr_name));
    557 	if (ioctl(s, SIOCSIFCAP, &ifcr) == -1)
    558 		err(EXIT_FAILURE, "SIOCSIFCAP");
    559 }
    560 
    561 int
    562 main(int argc, char **argv)
    563 {
    564 	const struct afswtch *afp;
    565 	int af, aflag = 0, Cflag = 0, s;
    566 	struct match match[32];
    567 	size_t nmatch;
    568 	struct parser *start;
    569 	int ch, narg = 0, rc;
    570 	prop_dictionary_t env, xenv;
    571 	const char *ifname;
    572 
    573 	memset(match, 0, sizeof(match));
    574 
    575 	start = init_parser();
    576 
    577 	/* Parse command-line options */
    578 	aflag = mflag = vflag = zflag = 0;
    579 	while ((ch = getopt(argc, argv, "AabCdhlmsuvz"
    580 #ifdef INET6
    581 					"L"
    582 #endif
    583 			)) != -1) {
    584 		switch (ch) {
    585 		case 'A':
    586 			warnx("-A is deprecated");
    587 			break;
    588 
    589 		case 'a':
    590 			aflag = 1;
    591 			break;
    592 
    593 		case 'b':
    594 			bflag = 1;
    595 			break;
    596 
    597 		case 'C':
    598 			Cflag = 1;
    599 			break;
    600 
    601 		case 'd':
    602 			dflag = 1;
    603 			break;
    604 		case 'h':
    605 			hflag = 1;
    606 			break;
    607 #ifdef INET6
    608 		case 'L':
    609 			Lflag = 1;
    610 			break;
    611 #endif
    612 
    613 		case 'l':
    614 			lflag = 1;
    615 			break;
    616 
    617 		case 'm':
    618 			mflag = 1;
    619 			break;
    620 
    621 		case 's':
    622 			sflag = 1;
    623 			break;
    624 
    625 		case 'u':
    626 			uflag = 1;
    627 			break;
    628 
    629 		case 'v':
    630 			vflag = 1;
    631 			break;
    632 
    633 		case 'z':
    634 			zflag = 1;
    635 			break;
    636 
    637 
    638 		default:
    639 			usage();
    640 			/* NOTREACHED */
    641 		}
    642 		switch (ch) {
    643 		case 'a':
    644 			start = &opt_family_only.pb_parser;
    645 			break;
    646 
    647 #ifdef INET6
    648 		case 'L':
    649 #endif
    650 		case 'm':
    651 		case 'v':
    652 		case 'z':
    653 			if (start != &opt_family_only.pb_parser)
    654 				start = &iface_opt_family_only.pif_parser;
    655 			break;
    656 		case 'C':
    657 			start = &cloneterm.pt_parser;
    658 			break;
    659 		case 'l':
    660 			start = &no_cmds.pt_parser;
    661 			break;
    662 		case 's':
    663 			if (start != &no_cmds.pt_parser &&
    664 			    start != &opt_family_only.pb_parser)
    665 				start = &iface_only.pif_parser;
    666 			break;
    667 		default:
    668 			break;
    669 		}
    670 	}
    671 	argc -= optind;
    672 	argv += optind;
    673 
    674 	/*
    675 	 * -l means "list all interfaces", and is mutally exclusive with
    676 	 * all other flags/commands.
    677 	 *
    678 	 * -C means "list all names of cloners", and it mutually exclusive
    679 	 * with all other flags/commands.
    680 	 *
    681 	 * -a means "print status of all interfaces".
    682 	 */
    683 	if ((lflag || Cflag) && (aflag || mflag || vflag || zflag))
    684 		usage();
    685 #ifdef INET6
    686 	if ((lflag || Cflag) && Lflag)
    687 		usage();
    688 #endif
    689 	if (lflag && Cflag)
    690 		usage();
    691 
    692 	nmatch = __arraycount(match);
    693 
    694 	rc = parse(argc, argv, start, match, &nmatch, &narg);
    695 	if (rc != 0)
    696 		usage();
    697 
    698 	if ((xenv = prop_dictionary_create()) == NULL)
    699 		err(EXIT_FAILURE, "%s: prop_dictionary_create", __func__);
    700 
    701 	if (matches_exec(match, xenv, nmatch) == -1)
    702 		err(EXIT_FAILURE, "exec_matches");
    703 
    704 	argc -= narg;
    705 	argv += narg;
    706 
    707 	env = (nmatch > 0) ? match[(int)nmatch - 1].m_env : NULL;
    708 	if (env == NULL)
    709 		env = xenv;
    710 	else
    711 		env = prop_dictionary_augment(env, xenv);
    712 
    713 	/* Process any media commands that may have been issued. */
    714 	process_media_commands(env);
    715 
    716 	af = getaf(env);
    717 	switch (af) {
    718 #ifndef INET_ONLY
    719 	case AF_APPLETALK:
    720 		checkatrange(&at_addreq.ifra_addr);
    721 		break;
    722 #endif	/* INET_ONLY */
    723 	default:
    724 		break;
    725 	case -1:
    726 		af = AF_INET;
    727 		break;
    728 	}
    729 
    730 	if ((s = getsock(af)) == -1)
    731 		err(EXIT_FAILURE, "%s: getsock", __func__);
    732 
    733 	if ((ifname = getifname(env)) == NULL)
    734 		err(EXIT_FAILURE, "%s: getifname", __func__);
    735 
    736 	if ((afp = lookup_af_bynum(af)) == NULL)
    737 		errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__);
    738 
    739 	if (afp->af_addr_commit != NULL) {
    740 		(*afp->af_addr_commit)(env, xenv);
    741 	} else {
    742 		if (clearaddr) {
    743 			estrlcpy(afp->af_ridreq, ifname, IFNAMSIZ);
    744 			if (ioctl(s, afp->af_difaddr, afp->af_ridreq) == -1)
    745 				err(EXIT_FAILURE, "SIOCDIFADDR");
    746 		}
    747 		if (newaddr > 0) {
    748 			estrlcpy(afp->af_addreq, ifname, IFNAMSIZ);
    749 			if (ioctl(s, afp->af_aifaddr, afp->af_addreq) == -1)
    750 				warn("SIOCAIFADDR");
    751 			else if (check_up_state < 0)
    752 				check_up_state = 1;
    753 		}
    754 	}
    755 
    756 	do_setifpreference(env);
    757 	do_setifcaps(s, ifname, env);
    758 
    759 	if (check_up_state == 1)
    760 		check_ifflags_up(ifname);
    761 
    762 	exit(EXIT_SUCCESS);
    763 }
    764 
    765 const struct afswtch *
    766 lookup_af_bynum(int afnum)
    767 {
    768 	const struct afswtch *a;
    769 
    770 	for (a = afs; a->af_name != NULL; a++)
    771 		if (a->af_af == afnum)
    772 			return (a);
    773 	return (NULL);
    774 }
    775 
    776 void
    777 printall(const char *ifname, prop_dictionary_t env0)
    778 {
    779 	struct ifaddrs *ifap, *ifa;
    780 	struct ifreq ifr;
    781 	const struct sockaddr_dl *sdl = NULL;
    782 	prop_dictionary_t env, oenv;
    783 	int idx;
    784 	char *p;
    785 
    786 	if (env0 == NULL)
    787 		env = prop_dictionary_create();
    788 	else
    789 		env = prop_dictionary_copy_mutable(env0);
    790 
    791 	oenv = prop_dictionary_create();
    792 
    793 	if (env == NULL || oenv == NULL)
    794 		errx(EXIT_FAILURE, "%s: prop_dictionary_copy/create", __func__);
    795 
    796 	if (getifaddrs(&ifap) != 0)
    797 		err(EXIT_FAILURE, "getifaddrs");
    798 	p = NULL;
    799 	idx = 0;
    800 	for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
    801 		memset(&ifr, 0, sizeof(ifr));
    802 		estrlcpy(ifr.ifr_name, ifa->ifa_name, sizeof(ifr.ifr_name));
    803 		if (sizeof(ifr.ifr_addr) >= ifa->ifa_addr->sa_len) {
    804 			memcpy(&ifr.ifr_addr, ifa->ifa_addr,
    805 			    ifa->ifa_addr->sa_len);
    806 		}
    807 
    808 		if (ifname != NULL && strcmp(ifname, ifa->ifa_name) != 0)
    809 			continue;
    810 		if (ifa->ifa_addr->sa_family == AF_LINK)
    811 			sdl = (const struct sockaddr_dl *) ifa->ifa_addr;
    812 		if (p && strcmp(p, ifa->ifa_name) == 0)
    813 			continue;
    814 		if (!prop_dictionary_set_cstring(env, "if", ifa->ifa_name))
    815 			continue;
    816 		p = ifa->ifa_name;
    817 
    818 		if (bflag && (ifa->ifa_flags & IFF_BROADCAST) == 0)
    819 			continue;
    820 		if (dflag && (ifa->ifa_flags & IFF_UP) != 0)
    821 			continue;
    822 		if (uflag && (ifa->ifa_flags & IFF_UP) == 0)
    823 			continue;
    824 
    825 		if (sflag && carrier(env))
    826 			continue;
    827 		idx++;
    828 		/*
    829 		 * Are we just listing the interfaces?
    830 		 */
    831 		if (lflag) {
    832 			if (idx > 1)
    833 				printf(" ");
    834 			fputs(ifa->ifa_name, stdout);
    835 			continue;
    836 		}
    837 
    838 		status(sdl, env, oenv);
    839 		sdl = NULL;
    840 	}
    841 	if (lflag)
    842 		printf("\n");
    843 	prop_object_release((prop_object_t)env);
    844 	prop_object_release((prop_object_t)oenv);
    845 	freeifaddrs(ifap);
    846 }
    847 
    848 int
    849 list_cloners(prop_dictionary_t env, prop_dictionary_t oenv)
    850 {
    851 	struct if_clonereq ifcr;
    852 	char *cp, *buf;
    853 	int idx, s;
    854 
    855 	memset(&ifcr, 0, sizeof(ifcr));
    856 
    857 	s = getsock(AF_INET);
    858 
    859 	if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)
    860 		err(EXIT_FAILURE, "SIOCIFGCLONERS for count");
    861 
    862 	buf = malloc(ifcr.ifcr_total * IFNAMSIZ);
    863 	if (buf == NULL)
    864 		err(EXIT_FAILURE, "unable to allocate cloner name buffer");
    865 
    866 	ifcr.ifcr_count = ifcr.ifcr_total;
    867 	ifcr.ifcr_buffer = buf;
    868 
    869 	if (ioctl(s, SIOCIFGCLONERS, &ifcr) == -1)
    870 		err(EXIT_FAILURE, "SIOCIFGCLONERS for names");
    871 
    872 	/*
    873 	 * In case some disappeared in the mean time, clamp it down.
    874 	 */
    875 	if (ifcr.ifcr_count > ifcr.ifcr_total)
    876 		ifcr.ifcr_count = ifcr.ifcr_total;
    877 
    878 	for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) {
    879 		if (idx > 0)
    880 			printf(" ");
    881 		printf("%s", cp);
    882 	}
    883 
    884 	printf("\n");
    885 	free(buf);
    886 	exit(EXIT_SUCCESS);
    887 }
    888 
    889 static int
    890 clone_command(prop_dictionary_t env, prop_dictionary_t xenv)
    891 {
    892 	struct ifreq ifreq;
    893 	int s;
    894 	int64_t cmd;
    895 	const char *ifname;
    896 
    897 	if (!prop_dictionary_get_int64(env, "clonecmd", &cmd)) {
    898 		errno = ENOENT;
    899 		return -1;
    900 	}
    901 
    902 	if ((ifname = getifname(env)) == NULL)
    903 		return -1;
    904 
    905 	/* We're called early... */
    906 	s = getsock(AF_INET);
    907 
    908 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
    909 	if (ioctl(s, (unsigned long)cmd, &ifreq) == -1) {
    910 		warn("%s", __func__);
    911 		return -1;
    912 	}
    913 	return 0;
    914 }
    915 
    916 /*ARGSUSED*/
    917 int
    918 setifaddr(prop_dictionary_t env, prop_dictionary_t xenv)
    919 {
    920 	struct ifreq *ifr;		/* XXX */
    921 	const struct paddr_prefix *pfx0;
    922 	struct paddr_prefix *pfx;
    923 	prop_data_t d;
    924 	const char *ifname;
    925 	int af, s;
    926 	const struct afswtch *afp;
    927 
    928 	if ((af = getaf(env)) == -1)
    929 		af = AF_INET;
    930 
    931 	if ((afp = lookup_af_bynum(af)) == NULL)
    932 		return -1;
    933 
    934 	d = (prop_data_t)prop_dictionary_get(env, "address");
    935 	assert(d != NULL);
    936 	pfx0 = prop_data_data_nocopy(d);
    937 
    938 	if (pfx0->pfx_len >= 0) {
    939 		pfx = prefixlen_to_mask(af, pfx0->pfx_len);
    940 		if (pfx == NULL)
    941 			err(EXIT_FAILURE, "prefixlen_to_mask");
    942 
    943 		if (afp->af_getaddr != NULL)
    944 			(*afp->af_getaddr)(pfx, MASK);
    945 		free(pfx);
    946 	}
    947 
    948 	if (afp->af_addr_commit != NULL)
    949 		return 0;
    950 
    951 	if ((ifname = getifname(env)) == NULL)
    952 		return -1;
    953 
    954 	/*
    955 	 * Delay the ioctl to set the interface addr until flags are all set.
    956 	 * The address interpretation may depend on the flags,
    957 	 * and the flags may change when the address is set.
    958 	 */
    959 	setaddr++;
    960 	if (newaddr == -1)
    961 		newaddr = 1;
    962 	if (doalias == 0 && afp->af_gifaddr != 0) {
    963 		ifr = (struct ifreq *)afp->af_ridreq;
    964 		estrlcpy(ifr->ifr_name, ifname, sizeof(ifr->ifr_name));
    965 		ifr->ifr_addr.sa_family = af;
    966 
    967 		if ((s = getsock(af)) == -1)
    968 			err(EXIT_FAILURE, "getsock");
    969 
    970 		if (ioctl(s, afp->af_gifaddr, afp->af_ridreq) == 0)
    971 			clearaddr = 1;
    972 		else if (errno == EADDRNOTAVAIL)
    973 			/* No address was assigned yet. */
    974 			;
    975 		else
    976 			err(EXIT_FAILURE, "SIOCGIFADDR");
    977 	}
    978 
    979 #if 0
    980 	int i;
    981 	for (i = 0; i < pfx0->pfx_addr.sa_len; i++)
    982 		printf(" %02x", ((const uint8_t *)&pfx->pfx_addr)[i]);
    983 	printf("\n");
    984 #endif
    985 	if (afp->af_getaddr != NULL)
    986 		(*afp->af_getaddr)(pfx0, (doalias >= 0 ? ADDR : RIDADDR));
    987 	return 0;
    988 }
    989 
    990 int
    991 setifnetmask(prop_dictionary_t env, prop_dictionary_t xenv)
    992 {
    993 	const struct paddr_prefix *pfx;
    994 	prop_data_t d;
    995 	int af;
    996 	const struct afswtch *afp;
    997 
    998 	if ((af = getaf(env)) == -1)
    999 		af = AF_INET;
   1000 
   1001 	if ((afp = lookup_af_bynum(af)) == NULL)
   1002 		return -1;
   1003 
   1004 	d = (prop_data_t)prop_dictionary_get(env, "dstormask");
   1005 	assert(d != NULL);
   1006 	pfx = prop_data_data_nocopy(d);
   1007 
   1008 	if (!prop_dictionary_set(xenv, "netmask", (prop_object_t)d))
   1009 		return -1;
   1010 
   1011 	if (afp->af_getaddr != NULL)
   1012 		(*afp->af_getaddr)(pfx, MASK);
   1013 	return 0;
   1014 }
   1015 
   1016 int
   1017 setifbroadaddr(prop_dictionary_t env, prop_dictionary_t xenv)
   1018 {
   1019 	const struct paddr_prefix *pfx;
   1020 	prop_data_t d;
   1021 	int af;
   1022 	const struct afswtch *afp;
   1023 	unsigned short flags;
   1024 
   1025 	if ((af = getaf(env)) == -1)
   1026 		af = AF_INET;
   1027 
   1028 	if ((afp = lookup_af_bynum(af)) == NULL)
   1029 		return -1;
   1030 
   1031 	if (getifflags(env, xenv, &flags) == -1)
   1032 		err(EXIT_FAILURE, "%s: getifflags", __func__);
   1033 
   1034 	if ((flags & IFF_BROADCAST) == 0)
   1035 		errx(EXIT_FAILURE, "not a broadcast interface");
   1036 
   1037 	d = (prop_data_t)prop_dictionary_get(env, "broadcast");
   1038 	assert(d != NULL);
   1039 	pfx = prop_data_data_nocopy(d);
   1040 
   1041 	if (!prop_dictionary_set(xenv, "broadcast", (prop_object_t)d))
   1042 		return -1;
   1043 
   1044 	if (afp->af_getaddr != NULL)
   1045 		(*afp->af_getaddr)(pfx, DSTADDR);
   1046 
   1047 	return 0;
   1048 }
   1049 
   1050 #define rqtosa(__afp, __x) (&(((struct ifreq *)(__afp->__x))->ifr_addr))
   1051 
   1052 int
   1053 notealias(prop_dictionary_t env, prop_dictionary_t xenv)
   1054 {
   1055 	bool alias, delete;
   1056 	int af;
   1057 	const struct afswtch *afp;
   1058 
   1059 	if ((af = getaf(env)) == -1)
   1060 		af = AF_INET;
   1061 
   1062 	if ((afp = lookup_af_bynum(af)) == NULL)
   1063 		return -1;
   1064 
   1065 	if (afp->af_addr_commit != NULL)
   1066 		return 0;
   1067 
   1068 	if (!prop_dictionary_get_bool(env, "alias", &alias)) {
   1069 		errno = ENOENT;
   1070 		return -1;
   1071 	}
   1072 	delete = !alias;
   1073 	if (setaddr && doalias == 0 && delete)
   1074 		memcpy(rqtosa(afp, af_ridreq), rqtosa(afp, af_addreq),
   1075 		    rqtosa(afp, af_addreq)->sa_len);
   1076 	doalias = delete ? -1 : 1;
   1077 	if (delete) {
   1078 		clearaddr = 1;
   1079 		newaddr = 0;
   1080 	} else {
   1081 		clearaddr = 0;
   1082 	}
   1083 	return 0;
   1084 }
   1085 
   1086 /*ARGSUSED*/
   1087 int
   1088 notrailers(prop_dictionary_t env, prop_dictionary_t xenv)
   1089 {
   1090 	puts("Note: trailers are no longer sent, but always received");
   1091 	return 0;
   1092 }
   1093 
   1094 /*ARGSUSED*/
   1095 int
   1096 setifdstormask(prop_dictionary_t env, prop_dictionary_t xenv)
   1097 {
   1098 	const char *key;
   1099 	const struct paddr_prefix *pfx;
   1100 	prop_data_t d;
   1101 	int af, which;
   1102 	const struct afswtch *afp;
   1103 	unsigned short flags;
   1104 
   1105 	if ((af = getaf(env)) == -1)
   1106 		af = AF_INET;
   1107 
   1108 	if ((afp = lookup_af_bynum(af)) == NULL)
   1109 		return -1;
   1110 
   1111 	if (getifflags(env, xenv, &flags) == -1)
   1112 		err(EXIT_FAILURE, "%s: getifflags", __func__);
   1113 
   1114 	d = (prop_data_t)prop_dictionary_get(env, "dstormask");
   1115 	assert(d != NULL);
   1116 	pfx = prop_data_data_nocopy(d);
   1117 
   1118 	if ((flags & IFF_BROADCAST) == 0) {
   1119 		key = "dst";
   1120 		which = DSTADDR;
   1121 	} else {
   1122 		key = "netmask";
   1123 		which = MASK;
   1124 	}
   1125 
   1126 	if (!prop_dictionary_set(xenv, key, (prop_object_t)d))
   1127 		return -1;
   1128 
   1129 	if (afp->af_getaddr != NULL)
   1130 		(*afp->af_getaddr)(pfx, which);
   1131 	return 0;
   1132 }
   1133 
   1134 void
   1135 check_ifflags_up(const char *ifname)
   1136 {
   1137 	struct ifreq ifreq;
   1138 	int s;
   1139 
   1140 	s = getsock(AF_UNSPEC);
   1141 
   1142 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
   1143  	if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)
   1144 		err(EXIT_FAILURE, "SIOCGIFFLAGS");
   1145 	if (ifreq.ifr_flags & IFF_UP)
   1146 		return;
   1147 	ifreq.ifr_flags |= IFF_UP;
   1148 	if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)
   1149 		err(EXIT_FAILURE, "SIOCSIFFLAGS");
   1150 }
   1151 
   1152 int
   1153 setifflags(prop_dictionary_t env, prop_dictionary_t xenv)
   1154 {
   1155 	struct ifreq ifreq;
   1156 	int64_t ifflag;
   1157 	int s;
   1158 	bool rc;
   1159 	const char *ifname;
   1160 
   1161 	s = getsock(AF_INET);
   1162 
   1163 	rc = prop_dictionary_get_int64(env, "ifflag", &ifflag);
   1164 	assert(rc);
   1165 	if ((ifname = getifname(env)) == NULL)
   1166 		return -1;
   1167 
   1168 	estrlcpy(ifreq.ifr_name, ifname, sizeof(ifreq.ifr_name));
   1169  	if (ioctl(s, SIOCGIFFLAGS, &ifreq) == -1)
   1170 		return -1;
   1171 
   1172 	if (ifflag < 0) {
   1173 		ifflag = -ifflag;
   1174 		if (ifflag == IFF_UP)
   1175 			check_up_state = 0;
   1176 		ifreq.ifr_flags &= ~ifflag;
   1177 	} else
   1178 		ifreq.ifr_flags |= ifflag;
   1179 
   1180 	if (ioctl(s, SIOCSIFFLAGS, &ifreq) == -1)
   1181 		return -1;
   1182 
   1183 	return 0;
   1184 }
   1185 
   1186 static int
   1187 getifcaps(prop_dictionary_t env, prop_dictionary_t oenv, struct ifcapreq *oifcr)
   1188 {
   1189 	const char *ifname;
   1190 	bool rc;
   1191 	int s;
   1192 	struct ifcapreq ifcr;
   1193 	const struct ifcapreq *tmpifcr;
   1194 	prop_data_t capdata;
   1195 
   1196 	if ((s = getsock(AF_UNSPEC)) == -1)
   1197 		return -1;
   1198 
   1199 	if ((ifname = getifname(env)) == NULL)
   1200 		return -1;
   1201 
   1202 	capdata = (prop_data_t)prop_dictionary_get(env, "ifcaps");
   1203 
   1204 	if (capdata != NULL) {
   1205 		tmpifcr = prop_data_data_nocopy(capdata);
   1206 		*oifcr = *tmpifcr;
   1207 		return 0;
   1208 	}
   1209 
   1210 	estrlcpy(ifcr.ifcr_name, ifname, sizeof(ifcr.ifcr_name));
   1211 	(void)ioctl(s, SIOCGIFCAP, &ifcr);
   1212 	*oifcr = ifcr;
   1213 
   1214 	capdata = prop_data_create_data(&ifcr, sizeof(ifcr));
   1215 
   1216 	rc = prop_dictionary_set(oenv, "ifcaps", capdata);
   1217 
   1218 	prop_object_release((prop_object_t)capdata);
   1219 
   1220 	return rc ? 0 : -1;
   1221 }
   1222 
   1223 static int
   1224 setifcaps(prop_dictionary_t env, prop_dictionary_t oenv)
   1225 {
   1226 	int64_t ifcap;
   1227 	int s;
   1228 	bool rc;
   1229 	prop_data_t capdata;
   1230 	const char *ifname;
   1231 	struct ifcapreq ifcr;
   1232 
   1233 	s = getsock(AF_INET);
   1234 
   1235 	rc = prop_dictionary_get_int64(env, "ifcap", &ifcap);
   1236 	assert(rc);
   1237 
   1238 	if ((ifname = getifname(env)) == NULL)
   1239 		return -1;
   1240 
   1241 	if (getifcaps(env, oenv, &ifcr) == -1)
   1242 		return -1;
   1243 
   1244 	if (ifcap < 0) {
   1245 		ifcap = -ifcap;
   1246 		ifcr.ifcr_capenable &= ~ifcap;
   1247 	} else
   1248 		ifcr.ifcr_capenable |= ifcap;
   1249 
   1250 	if ((capdata = prop_data_create_data(&ifcr, sizeof(ifcr))) == NULL)
   1251 		return -1;
   1252 
   1253 	rc = prop_dictionary_set(oenv, "ifcaps", capdata);
   1254 	prop_object_release((prop_object_t)capdata);
   1255 
   1256 	return rc ? 0 : -1;
   1257 }
   1258 
   1259 static int
   1260 setifmetric(prop_dictionary_t env, prop_dictionary_t xenv)
   1261 {
   1262 	struct ifreq ifr;
   1263 	bool rc;
   1264 	const char *ifname;
   1265 	int s;
   1266 	int64_t metric;
   1267 
   1268 	if ((s = getsock(AF_UNSPEC)) == -1)
   1269 		return -1;
   1270 
   1271 	if ((ifname = getifname(env)) == NULL)
   1272 		return -1;
   1273 
   1274 	rc = prop_dictionary_get_int64(env, "metric", &metric);
   1275 	assert(rc);
   1276 
   1277 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1278 	ifr.ifr_metric = metric;
   1279 	if (ioctl(s, SIOCSIFMETRIC, &ifr) == -1)
   1280 		warn("SIOCSIFMETRIC");
   1281 	return 0;
   1282 }
   1283 
   1284 static void
   1285 do_setifpreference(prop_dictionary_t env)
   1286 {
   1287 	struct if_addrprefreq ifap;
   1288 	int af, s;
   1289 	const char *ifname;
   1290 	const struct afswtch *afp;
   1291 	prop_data_t d;
   1292 	const struct paddr_prefix *pfx;
   1293 
   1294 	if ((af = getaf(env)) == -1)
   1295 		af = AF_INET;
   1296 
   1297 	if ((afp = lookup_af_bynum(af)) == NULL)
   1298 		errx(EXIT_FAILURE, "%s: lookup_af_bynum", __func__);
   1299 
   1300 	memset(&ifap, 0, sizeof(ifap));
   1301 
   1302 	if (!prop_dictionary_get_int16(env, "preference",
   1303 	    &ifap.ifap_preference))
   1304 		return;
   1305 
   1306 	d = (prop_data_t)prop_dictionary_get(env, "address");
   1307 	assert(d != NULL);
   1308 
   1309 	pfx = prop_data_data_nocopy(d);
   1310 
   1311 	s = getsock(AF_UNSPEC);
   1312 
   1313 	if ((ifname = getifname(env)) == NULL)
   1314 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1315 
   1316 	strlcpy(ifap.ifap_name, ifname, sizeof(ifap.ifap_name));
   1317 	memcpy(&ifap.ifap_addr, &pfx->pfx_addr,
   1318 	    MIN(sizeof(ifap.ifap_addr), pfx->pfx_addr.sa_len));
   1319 	if (ioctl(s, SIOCSIFADDRPREF, &ifap) == -1)
   1320 		warn("SIOCSIFADDRPREF");
   1321 }
   1322 
   1323 static int
   1324 setifmtu(prop_dictionary_t env, prop_dictionary_t xenv)
   1325 {
   1326 	int64_t mtu;
   1327 	bool rc;
   1328 	const char *ifname;
   1329 	struct ifreq ifr;
   1330 	int s;
   1331 
   1332 	if ((s = getsock(AF_UNSPEC)) == -1)
   1333 		return -1;
   1334 
   1335 	if ((ifname = getifname(env)) == NULL)
   1336 		return -1;
   1337 
   1338 	rc = prop_dictionary_get_int64(env, "mtu", &mtu);
   1339 	assert(rc);
   1340 
   1341 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1342 	ifr.ifr_mtu = mtu;
   1343 	if (ioctl(s, SIOCSIFMTU, &ifr) == -1)
   1344 		warn("SIOCSIFMTU");
   1345 
   1346 	return 0;
   1347 }
   1348 
   1349 static void
   1350 media_error(int type, const char *val, const char *opt)
   1351 {
   1352 	errx(EXIT_FAILURE, "unknown %s media %s: %s",
   1353 		get_media_type_string(type), opt, val);
   1354 }
   1355 
   1356 void
   1357 init_current_media(prop_dictionary_t env, prop_dictionary_t oenv)
   1358 {
   1359 	struct ifmediareq ifmr;
   1360 	int s;
   1361 	const char *ifname;
   1362 
   1363 	if ((s = getsock(AF_UNSPEC)) == -1)
   1364 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1365 
   1366 	if ((ifname = getifname(env)) == NULL)
   1367 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1368 
   1369 	/*
   1370 	 * If we have not yet done so, grab the currently-selected
   1371 	 * media.
   1372 	 */
   1373 
   1374 	if (prop_dictionary_get(env, "initmedia") == NULL) {
   1375 		memset(&ifmr, 0, sizeof(ifmr));
   1376 		estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1377 
   1378 		if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1379 			/*
   1380 			 * If we get E2BIG, the kernel is telling us
   1381 			 * that there are more, so we can ignore it.
   1382 			 */
   1383 			if (errno != E2BIG)
   1384 				err(EXIT_FAILURE, "SIOCGIFMEDIA");
   1385 		}
   1386 
   1387 		if (!prop_dictionary_set_bool(oenv, "initmedia", true)) {
   1388 			err(EXIT_FAILURE, "%s: prop_dictionary_set_bool",
   1389 			    __func__);
   1390 		}
   1391 		media_current = ifmr.ifm_current;
   1392 	}
   1393 
   1394 	/* Sanity. */
   1395 	if (IFM_TYPE(media_current) == 0)
   1396 		errx(EXIT_FAILURE, "%s: no link type?", ifname);
   1397 }
   1398 
   1399 void
   1400 process_media_commands(prop_dictionary_t env)
   1401 {
   1402 	struct ifreq ifr;
   1403 	const char *ifname;
   1404 	int s;
   1405 
   1406 	if ((s = getsock(AF_UNSPEC)) == -1)
   1407 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1408 
   1409 	if (prop_dictionary_get(env, "media") == NULL &&
   1410 	    prop_dictionary_get(env, "mediaopt") == NULL &&
   1411 	    prop_dictionary_get(env, "unmediaopt") == NULL &&
   1412 	    prop_dictionary_get(env, "mediamode") == NULL) {
   1413 		/* Nothing to do. */
   1414 		return;
   1415 	}
   1416 
   1417 	if ((ifname = getifname(env)) == NULL)
   1418 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1419 
   1420 	/*
   1421 	 * Media already set up, and commands sanity-checked.  Set/clear
   1422 	 * any options, and we're ready to go.
   1423 	 */
   1424 	media_current |= mediaopt_set;
   1425 	media_current &= ~mediaopt_clear;
   1426 
   1427 	memset(&ifr, 0, sizeof(ifr));
   1428 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1429 	ifr.ifr_media = media_current;
   1430 
   1431 	if (ioctl(s, SIOCSIFMEDIA, &ifr) == -1)
   1432 		err(EXIT_FAILURE, "SIOCSIFMEDIA");
   1433 }
   1434 
   1435 int
   1436 setmedia(prop_dictionary_t env, prop_dictionary_t xenv)
   1437 {
   1438 	int type, subtype, inst;
   1439 	prop_data_t data;
   1440 	char *val;
   1441 
   1442 	init_current_media(env, xenv);
   1443 
   1444 	data = (prop_data_t)prop_dictionary_get(env, "media");
   1445 	assert(data != NULL);
   1446 
   1447 	/* Only one media command may be given. */
   1448 	/* Must not come after mode commands */
   1449 	/* Must not come after mediaopt commands */
   1450 
   1451 	/*
   1452 	 * No need to check if `instance' has been issued; setmediainst()
   1453 	 * craps out if `media' has not been specified.
   1454 	 */
   1455 
   1456 	type = IFM_TYPE(media_current);
   1457 	inst = IFM_INST(media_current);
   1458 
   1459 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1460 	if (val == NULL)
   1461 		return -1;
   1462 
   1463 	/* Look up the subtype. */
   1464 	subtype = get_media_subtype(type, val);
   1465 	if (subtype == -1)
   1466 		media_error(type, val, "subtype");
   1467 
   1468 	/* Build the new current media word. */
   1469 	media_current = IFM_MAKEWORD(type, subtype, 0, inst);
   1470 
   1471 	/* Media will be set after other processing is complete. */
   1472 	return 0;
   1473 }
   1474 
   1475 int
   1476 setmediaopt(prop_dictionary_t env, prop_dictionary_t xenv)
   1477 {
   1478 	char *invalid;
   1479 	prop_data_t data;
   1480 	char *val;
   1481 
   1482 	init_current_media(env, xenv);
   1483 
   1484 	data = (prop_data_t)prop_dictionary_get(env, "mediaopt");
   1485 	assert(data != NULL);
   1486 
   1487 	/* Can only issue `mediaopt' once. */
   1488 	/* Can't issue `mediaopt' if `instance' has already been issued. */
   1489 
   1490 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1491 	if (val == NULL)
   1492 		return -1;
   1493 
   1494 	mediaopt_set = get_media_options(media_current, val, &invalid);
   1495 	free(val);
   1496 	if (mediaopt_set == -1)
   1497 		media_error(media_current, invalid, "option");
   1498 
   1499 	/* Media will be set after other processing is complete. */
   1500 	return 0;
   1501 }
   1502 
   1503 int
   1504 unsetmediaopt(prop_dictionary_t env, prop_dictionary_t xenv)
   1505 {
   1506 	char *invalid, *val;
   1507 	prop_data_t data;
   1508 
   1509 	init_current_media(env, xenv);
   1510 
   1511 	data = (prop_data_t)prop_dictionary_get(env, "unmediaopt");
   1512 	if (data == NULL) {
   1513 		errno = ENOENT;
   1514 		return -1;
   1515 	}
   1516 
   1517 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1518 	if (val == NULL)
   1519 		return -1;
   1520 
   1521 	/*
   1522 	 * No need to check for A_MEDIAINST, since the test for A_MEDIA
   1523 	 * implicitly checks for A_MEDIAINST.
   1524 	 */
   1525 
   1526 	mediaopt_clear = get_media_options(media_current, val, &invalid);
   1527 	free(val);
   1528 	if (mediaopt_clear == -1)
   1529 		media_error(media_current, invalid, "option");
   1530 
   1531 	/* Media will be set after other processing is complete. */
   1532 	return 0;
   1533 }
   1534 
   1535 int
   1536 setmediainst(prop_dictionary_t env, prop_dictionary_t xenv)
   1537 {
   1538 	int type, subtype, options;
   1539 	int64_t inst;
   1540 	bool rc;
   1541 
   1542 	init_current_media(env, xenv);
   1543 
   1544 	rc = prop_dictionary_get_int64(env, "mediainst", &inst);
   1545 	assert(rc);
   1546 
   1547 	/* Can only issue `instance' once. */
   1548 	/* Must have already specified `media' */
   1549 
   1550 	type = IFM_TYPE(media_current);
   1551 	subtype = IFM_SUBTYPE(media_current);
   1552 	options = IFM_OPTIONS(media_current);
   1553 
   1554 	media_current = IFM_MAKEWORD(type, subtype, options, inst);
   1555 
   1556 	/* Media will be set after other processing is complete. */
   1557 	return 0;
   1558 }
   1559 
   1560 int
   1561 setmediamode(prop_dictionary_t env, prop_dictionary_t xenv)
   1562 {
   1563 	int type, subtype, options, inst, mode;
   1564 	prop_data_t data;
   1565 	char *val;
   1566 
   1567 	init_current_media(env, xenv);
   1568 
   1569 	data = (prop_data_t)prop_dictionary_get(env, "mediamode");
   1570 	assert(data != NULL);
   1571 
   1572 	type = IFM_TYPE(media_current);
   1573 	subtype = IFM_SUBTYPE(media_current);
   1574 	options = IFM_OPTIONS(media_current);
   1575 	inst = IFM_INST(media_current);
   1576 
   1577 	val = strndup(prop_data_data_nocopy(data), prop_data_size(data));
   1578 	if (val == NULL)
   1579 		return -1;
   1580 
   1581 	mode = get_media_mode(type, val);
   1582 	if (mode == -1)
   1583 		media_error(type, val, "mode");
   1584 
   1585 	free(val);
   1586 
   1587 	media_current = IFM_MAKEWORD(type, subtype, options, inst) | mode;
   1588 
   1589 	/* Media will be set after other processing is complete. */
   1590 	return 0;
   1591 }
   1592 
   1593 void
   1594 print_media_word(int ifmw, const char *opt_sep)
   1595 {
   1596 	const char *str;
   1597 
   1598 	printf("%s", get_media_subtype_string(ifmw));
   1599 
   1600 	/* Find mode. */
   1601 	if (IFM_MODE(ifmw) != 0) {
   1602 		str = get_media_mode_string(ifmw);
   1603 		if (str != NULL)
   1604 			printf(" mode %s", str);
   1605 	}
   1606 
   1607 	/* Find options. */
   1608 	for (; (str = get_media_option_string(&ifmw)) != NULL; opt_sep = ",")
   1609 		printf("%s%s", opt_sep, str);
   1610 
   1611 	if (IFM_INST(ifmw) != 0)
   1612 		printf(" instance %d", IFM_INST(ifmw));
   1613 }
   1614 
   1615 int
   1616 carrier(prop_dictionary_t env)
   1617 {
   1618 	struct ifmediareq ifmr;
   1619 	int s;
   1620 	const char *ifname;
   1621 
   1622 	if ((s = getsock(AF_UNSPEC)) == -1)
   1623 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1624 
   1625 	if ((ifname = getifname(env)) == NULL)
   1626 		err(EXIT_FAILURE, "%s: getifname", __func__);
   1627 
   1628 	(void) memset(&ifmr, 0, sizeof(ifmr));
   1629 	estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1630 
   1631 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1632 		/*
   1633 		 * Interface doesn't support SIOC{G,S}IFMEDIA;
   1634 		 * assume ok.
   1635 		 */
   1636 		return EXIT_SUCCESS;
   1637 	}
   1638 	if ((ifmr.ifm_status & IFM_AVALID) == 0) {
   1639 		/*
   1640 		 * Interface doesn't report media-valid status.
   1641 		 * assume ok.
   1642 		 */
   1643 		return EXIT_SUCCESS;
   1644 	}
   1645 	/* otherwise, return ok for active, not-ok if not active. */
   1646 	if (ifmr.ifm_status & IFM_ACTIVE)
   1647 		return EXIT_SUCCESS;
   1648 	else
   1649 		return EXIT_FAILURE;
   1650 }
   1651 
   1652 const int ifm_status_valid_list[] = IFM_STATUS_VALID_LIST;
   1653 
   1654 const struct ifmedia_status_description ifm_status_descriptions[] =
   1655     IFM_STATUS_DESCRIPTIONS;
   1656 
   1657 /*
   1658  * Print the status of the interface.  If an address family was
   1659  * specified, show it and it only; otherwise, show them all.
   1660  */
   1661 void
   1662 status(const struct sockaddr_dl *sdl, prop_dictionary_t env,
   1663     prop_dictionary_t oenv)
   1664 {
   1665 	struct ifmediareq ifmr;
   1666 	struct ifdatareq ifdr;
   1667 	struct ifreq ifr;
   1668 	int *media_list, i;
   1669 	char hbuf[NI_MAXHOST];
   1670 	char fbuf[BUFSIZ];
   1671 	int af, s;
   1672 	const char *ifname;
   1673 	struct ifcapreq ifcr;
   1674 	unsigned short flags;
   1675 	const struct afswtch *afp;
   1676 
   1677 	if ((af = getaf(env)) == -1) {
   1678 		afp = NULL;
   1679 		af = AF_UNSPEC;
   1680 	} else
   1681 		afp = lookup_af_bynum(af);
   1682 
   1683 	if ((s = getsock(af)) == -1)
   1684 		err(EXIT_FAILURE, "%s: getsock", __func__);
   1685 
   1686 	if ((ifname = getifinfo(env, oenv, &flags)) == NULL)
   1687 		err(EXIT_FAILURE, "%s: getifinfo", __func__);
   1688 
   1689 	(void)snprintb(fbuf, sizeof(fbuf), IFFBITS, flags);
   1690 	printf("%s: flags=%s", ifname, &fbuf[2]);
   1691 
   1692 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1693 	if (ioctl(s, SIOCGIFMETRIC, &ifr) == -1)
   1694 		warn("SIOCGIFMETRIC %s", ifr.ifr_name);
   1695 	else if (ifr.ifr_metric != 0)
   1696 		printf(" metric %d", ifr.ifr_metric);
   1697 
   1698 	estrlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
   1699 	if (ioctl(s, SIOCGIFMTU, &ifr) != -1 && ifr.ifr_mtu != 0)
   1700 		printf(" mtu %d", ifr.ifr_mtu);
   1701 	printf("\n");
   1702 
   1703 	if (getifcaps(env, oenv, &ifcr) == -1)
   1704 		err(EXIT_FAILURE, "%s: getifcaps", __func__);
   1705 
   1706 	if (ifcr.ifcr_capabilities != 0) {
   1707 		(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,
   1708 		    ifcr.ifcr_capabilities);
   1709 		printf("\tcapabilities=%s\n", &fbuf[2]);
   1710 		(void)snprintb(fbuf, sizeof(fbuf), IFCAPBITS,
   1711 		    ifcr.ifcr_capenable);
   1712 		printf("\tenabled=%s\n", &fbuf[2]);
   1713 	}
   1714 
   1715 	ieee80211_status(env, oenv);
   1716 	vlan_status(env, oenv);
   1717 #ifndef INET_ONLY
   1718 	carp_status(env, oenv);
   1719 #endif
   1720 	tunnel_status(env, oenv);
   1721 	agr_status(env, oenv);
   1722 
   1723 	if (sdl != NULL &&
   1724 	    getnameinfo((const struct sockaddr *)sdl, sdl->sdl_len,
   1725 		hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) == 0 &&
   1726 	    hbuf[0] != '\0')
   1727 		printf("\taddress: %s\n", hbuf);
   1728 
   1729 	(void) memset(&ifmr, 0, sizeof(ifmr));
   1730 	estrlcpy(ifmr.ifm_name, ifname, sizeof(ifmr.ifm_name));
   1731 
   1732 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1) {
   1733 		/*
   1734 		 * Interface doesn't support SIOC{G,S}IFMEDIA.
   1735 		 */
   1736 		goto iface_stats;
   1737 	}
   1738 
   1739 	if (ifmr.ifm_count == 0) {
   1740 		warnx("%s: no media types?", ifname);
   1741 		goto iface_stats;
   1742 	}
   1743 
   1744 	media_list = (int *)malloc(ifmr.ifm_count * sizeof(int));
   1745 	if (media_list == NULL)
   1746 		err(EXIT_FAILURE, "malloc");
   1747 	ifmr.ifm_ulist = media_list;
   1748 
   1749 	if (ioctl(s, SIOCGIFMEDIA, &ifmr) == -1)
   1750 		err(EXIT_FAILURE, "SIOCGIFMEDIA");
   1751 
   1752 	printf("\tmedia: %s ", get_media_type_string(ifmr.ifm_current));
   1753 	print_media_word(ifmr.ifm_current, " ");
   1754 	if (ifmr.ifm_active != ifmr.ifm_current) {
   1755 		printf(" (");
   1756 		print_media_word(ifmr.ifm_active, " ");
   1757 		printf(")");
   1758 	}
   1759 	printf("\n");
   1760 
   1761 	if (ifmr.ifm_status & IFM_STATUS_VALID) {
   1762 		const struct ifmedia_status_description *ifms;
   1763 		int bitno, found = 0;
   1764 
   1765 		printf("\tstatus: ");
   1766 		for (bitno = 0; ifm_status_valid_list[bitno] != 0; bitno++) {
   1767 			for (ifms = ifm_status_descriptions;
   1768 			     ifms->ifms_valid != 0; ifms++) {
   1769 				if (ifms->ifms_type !=
   1770 				      IFM_TYPE(ifmr.ifm_current) ||
   1771 				    ifms->ifms_valid !=
   1772 				      ifm_status_valid_list[bitno])
   1773 					continue;
   1774 				printf("%s%s", found ? ", " : "",
   1775 				    IFM_STATUS_DESC(ifms, ifmr.ifm_status));
   1776 				found = 1;
   1777 
   1778 				/*
   1779 				 * For each valid indicator bit, there's
   1780 				 * only one entry for each media type, so
   1781 				 * terminate the inner loop now.
   1782 				 */
   1783 				break;
   1784 			}
   1785 		}
   1786 
   1787 		if (found == 0)
   1788 			printf("unknown");
   1789 		printf("\n");
   1790 	}
   1791 
   1792 	if (mflag) {
   1793 		int type, printed_type;
   1794 
   1795 		for (type = IFM_NMIN; type <= IFM_NMAX; type += IFM_NMIN) {
   1796 			for (i = 0, printed_type = 0; i < ifmr.ifm_count; i++) {
   1797 				if (IFM_TYPE(media_list[i]) != type)
   1798 					continue;
   1799 				if (printed_type == 0) {
   1800 					printf("\tsupported %s media:\n",
   1801 					    get_media_type_string(type));
   1802 					printed_type = 1;
   1803 				}
   1804 				printf("\t\tmedia ");
   1805 				print_media_word(media_list[i], " mediaopt ");
   1806 				printf("\n");
   1807 			}
   1808 		}
   1809 	}
   1810 
   1811 	free(media_list);
   1812 
   1813  iface_stats:
   1814 	if (!vflag && !zflag)
   1815 		goto proto_status;
   1816 
   1817 	estrlcpy(ifdr.ifdr_name, ifname, sizeof(ifdr.ifdr_name));
   1818 
   1819 	if (ioctl(s, zflag ? SIOCZIFDATA:SIOCGIFDATA, &ifdr) == -1) {
   1820 		err(EXIT_FAILURE, zflag ? "SIOCZIFDATA" : "SIOCGIFDATA");
   1821 	} else {
   1822 		struct if_data * const ifi = &ifdr.ifdr_data;
   1823 		char buf[5];
   1824 
   1825 #define	PLURAL(n)	((n) == 1 ? "" : "s")
   1826 #define PLURALSTR(s)	((atof(s)) == 1.0 ? "" : "s")
   1827 		printf("\tinput: %llu packet%s, ",
   1828 		    (unsigned long long) ifi->ifi_ipackets,
   1829 		    PLURAL(ifi->ifi_ipackets));
   1830 		if (hflag) {
   1831 			(void) humanize_number(buf, sizeof(buf),
   1832 			    (int64_t) ifi->ifi_ibytes, "", HN_AUTOSCALE,
   1833 			    HN_NOSPACE | HN_DECIMAL);
   1834 			printf("%s byte%s", buf,
   1835 			    PLURALSTR(buf));
   1836 		} else
   1837 			printf("%llu byte%s",
   1838 			    (unsigned long long) ifi->ifi_ibytes,
   1839 		            PLURAL(ifi->ifi_ibytes));
   1840 		if (ifi->ifi_imcasts)
   1841 			printf(", %llu multicast%s",
   1842 			    (unsigned long long) ifi->ifi_imcasts,
   1843 			    PLURAL(ifi->ifi_imcasts));
   1844 		if (ifi->ifi_ierrors)
   1845 			printf(", %llu error%s",
   1846 			    (unsigned long long) ifi->ifi_ierrors,
   1847 			    PLURAL(ifi->ifi_ierrors));
   1848 		if (ifi->ifi_iqdrops)
   1849 			printf(", %llu queue drop%s",
   1850 			    (unsigned long long) ifi->ifi_iqdrops,
   1851 			    PLURAL(ifi->ifi_iqdrops));
   1852 		if (ifi->ifi_noproto)
   1853 			printf(", %llu unknown protocol",
   1854 			    (unsigned long long) ifi->ifi_noproto);
   1855 		printf("\n\toutput: %llu packet%s, ",
   1856 		    (unsigned long long) ifi->ifi_opackets,
   1857 		    PLURAL(ifi->ifi_opackets));
   1858 		if (hflag) {
   1859 			(void) humanize_number(buf, sizeof(buf),
   1860 			    (int64_t) ifi->ifi_obytes, "", HN_AUTOSCALE,
   1861 			    HN_NOSPACE | HN_DECIMAL);
   1862 			printf("%s byte%s", buf,
   1863 			    PLURALSTR(buf));
   1864 		} else
   1865 			printf("%llu byte%s",
   1866 			    (unsigned long long) ifi->ifi_obytes,
   1867 			    PLURAL(ifi->ifi_obytes));
   1868 		if (ifi->ifi_omcasts)
   1869 			printf(", %llu multicast%s",
   1870 			    (unsigned long long) ifi->ifi_omcasts,
   1871 			    PLURAL(ifi->ifi_omcasts));
   1872 		if (ifi->ifi_oerrors)
   1873 			printf(", %llu error%s",
   1874 			    (unsigned long long) ifi->ifi_oerrors,
   1875 			    PLURAL(ifi->ifi_oerrors));
   1876 		if (ifi->ifi_collisions)
   1877 			printf(", %llu collision%s",
   1878 			    (unsigned long long) ifi->ifi_collisions,
   1879 			    PLURAL(ifi->ifi_collisions));
   1880 		printf("\n");
   1881 #undef PLURAL
   1882 #undef PLURALSTR
   1883 	}
   1884 
   1885 	ieee80211_statistics(env);
   1886 
   1887  proto_status:
   1888 
   1889 	if (afp != NULL)
   1890 		(*afp->af_status)(env, oenv, true);
   1891 	else for (afp = afs; afp->af_name != NULL; afp++)
   1892 		(*afp->af_status)(env, oenv, false);
   1893 }
   1894 
   1895 int
   1896 setifprefixlen(prop_dictionary_t env, prop_dictionary_t xenv)
   1897 {
   1898 	const char *ifname;
   1899 	bool rc;
   1900 	int64_t plen;
   1901 	int af;
   1902 	const struct afswtch *afp;
   1903 	unsigned short flags;
   1904 	struct paddr_prefix *pfx;
   1905 	prop_data_t d;
   1906 
   1907 	if ((af = getaf(env)) == -1)
   1908 		af = AF_INET;
   1909 
   1910 	if ((afp = lookup_af_bynum(af)) == NULL)
   1911 		return -1;
   1912 
   1913 	if ((ifname = getifinfo(env, xenv, &flags)) == NULL)
   1914 		err(EXIT_FAILURE, "getifinfo");
   1915 
   1916 	rc = prop_dictionary_get_int64(env, "prefixlen", &plen);
   1917 	assert(rc);
   1918 
   1919 	pfx = prefixlen_to_mask(af, plen);
   1920 	if (pfx == NULL)
   1921 		err(EXIT_FAILURE, "prefixlen_to_mask");
   1922 
   1923 	d = prop_data_create_data(pfx,
   1924 	    offsetof(struct paddr_prefix, pfx_addr) + pfx->pfx_addr.sa_len);
   1925 	if (d == NULL)
   1926 		err(EXIT_FAILURE, "%s: prop_data_create_data", __func__);
   1927 
   1928 	if (!prop_dictionary_set(xenv, "netmask", (prop_object_t)d))
   1929 		err(EXIT_FAILURE, "%s: prop_dictionary_set", __func__);
   1930 
   1931 	if (afp->af_getaddr != NULL)
   1932 		(*afp->af_getaddr)(pfx, MASK);
   1933 
   1934 	free(pfx);
   1935 	return 0;
   1936 }
   1937 
   1938 void
   1939 usage(void)
   1940 {
   1941 	const char *progname = getprogname();
   1942 
   1943 	fprintf(stderr,
   1944 	    "usage: %s [-h] [-m] [-v] [-z] "
   1945 #ifdef INET6
   1946 		"[-L] "
   1947 #endif
   1948 		"interface\n"
   1949 		"\t[ af [ address [ dest_addr ] ] [ netmask mask ] [ prefixlen n ]\n"
   1950 		"\t\t[ alias | -alias ] ]\n"
   1951 		"\t[ up ] [ down ] [ metric n ] [ mtu n ]\n"
   1952 		"\t[ nwid network_id ] [ nwkey network_key | -nwkey ]\n"
   1953 		"\t[ list scan ]\n"
   1954 		"\t[ powersave | -powersave ] [ powersavesleep duration ]\n"
   1955 		"\t[ hidessid | -hidessid ] [ apbridge | -apbridge ]\n"
   1956 		"\t[ [ af ] tunnel src_addr dest_addr ] [ deletetunnel ]\n"
   1957 		"\t[ arp | -arp ]\n"
   1958 		"\t[ media type ] [ mediaopt opts ] [ -mediaopt opts ] "
   1959 		"[ instance minst ]\n"
   1960 		"\t[ preference n ]\n"
   1961 		"\t[ vlan n vlanif i ]\n"
   1962 		"\t[ agrport i ] [ -agrport i ]\n"
   1963 		"\t[ anycast | -anycast ] [ deprecated | -deprecated ]\n"
   1964 		"\t[ tentative | -tentative ] [ pltime n ] [ vltime n ] [ eui64 ]\n"
   1965 		"\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ]\n"
   1966 		"       %s -a [-b] [-h] [-m] [-d] [-u] [-v] [-z] [ af ]\n"
   1967 		"       %s -l [-b] [-d] [-u] [-s]\n"
   1968 		"       %s -C\n"
   1969 		"       %s interface create\n"
   1970 		"       %s interface destroy\n",
   1971 		progname, progname, progname, progname, progname, progname);
   1972 	exit(EXIT_FAILURE);
   1973 }
   1974