xref: /freebsd/sbin/ifconfig/ifconfig.c (revision afe61c15161c324a7af299a9b8457aba5afc92db) 
1 /*
2  * Copyright (c) 1983, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #ifndef lint
35 static char copyright[] =
36 "@(#) Copyright (c) 1983, 1993\n\
37 	The Regents of the University of California.  All rights reserved.\n";
38 #endif /* not lint */
39 
40 #ifndef lint
41 static char sccsid[] = "@(#)ifconfig.c	8.2 (Berkeley) 2/16/94";
42 #endif /* not lint */
43 
44 #include <sys/param.h>
45 #include <sys/socket.h>
46 #include <sys/ioctl.h>
47 
48 #include <net/if.h>
49 #include <netinet/in.h>
50 #include <arpa/inet.h>
51 
52 #define	NSIP
53 #include <netns/ns.h>
54 #include <netns/ns_if.h>
55 #include <netdb.h>
56 
57 #define EON
58 #include <netiso/iso.h>
59 #include <netiso/iso_var.h>
60 #include <sys/protosw.h>
61 
62 #include <ctype.h>
63 #include <err.h>
64 #include <errno.h>
65 #include <stdio.h>
66 #include <stdlib.h>
67 #include <string.h>
68 #include <unistd.h>
69 
70 struct	ifreq		ifr, ridreq;
71 struct	ifaliasreq	addreq;
72 struct	iso_ifreq	iso_ridreq;
73 struct	iso_aliasreq	iso_addreq;
74 struct	sockaddr_in	netmask;
75 
76 char	name[30];
77 int	flags;
78 int	metric;
79 int	nsellength = 1;
80 int	setaddr;
81 int	setipdst;
82 int	doalias;
83 int	clearaddr;
84 int	newaddr = 1;
85 int	s;
86 extern	int errno;
87 
88 int	setifflags(), setifaddr(), setifdstaddr(), setifnetmask();
89 int	setifmetric(), setifbroadaddr(), setifipdst();
90 int	notealias(), setsnpaoffset(), setnsellength(), notrailers();
91 
92 #define	NEXTARG		0xffffff
93 
94 struct	cmd {
95 	char	*c_name;
96 	int	c_parameter;		/* NEXTARG means next argv */
97 	int	(*c_func)();
98 } cmds[] = {
99 	{ "up",		IFF_UP,		setifflags } ,
100 	{ "down",	-IFF_UP,	setifflags },
101 	{ "trailers",	-1,		notrailers },
102 	{ "-trailers",	1,		notrailers },
103 	{ "arp",	-IFF_NOARP,	setifflags },
104 	{ "-arp",	IFF_NOARP,	setifflags },
105 	{ "debug",	IFF_DEBUG,	setifflags },
106 	{ "-debug",	-IFF_DEBUG,	setifflags },
107 	{ "alias",	IFF_UP,		notealias },
108 	{ "-alias",	-IFF_UP,	notealias },
109 	{ "delete",	-IFF_UP,	notealias },
110 #ifdef notdef
111 #define	EN_SWABIPS	0x1000
112 	{ "swabips",	EN_SWABIPS,	setifflags },
113 	{ "-swabips",	-EN_SWABIPS,	setifflags },
114 #endif
115 	{ "netmask",	NEXTARG,	setifnetmask },
116 	{ "metric",	NEXTARG,	setifmetric },
117 	{ "broadcast",	NEXTARG,	setifbroadaddr },
118 	{ "ipdst",	NEXTARG,	setifipdst },
119 	{ "snpaoffset",	NEXTARG,	setsnpaoffset },
120 	{ "nsellength",	NEXTARG,	setnsellength },
121 	{ "link0",	IFF_LINK0,	setifflags } ,
122 	{ "-link0",	-IFF_LINK0,	setifflags } ,
123 	{ "link1",	IFF_LINK1,	setifflags } ,
124 	{ "-link1",	-IFF_LINK1,	setifflags } ,
125 	{ "link2",	IFF_LINK2,	setifflags } ,
126 	{ "-link2",	-IFF_LINK2,	setifflags } ,
127 	{ 0,		0,		setifaddr },
128 	{ 0,		0,		setifdstaddr },
129 };
130 
131 /*
132  * XNS support liberally adapted from code written at the University of
133  * Maryland principally by James O'Toole and Chris Torek.
134  */
135 int	in_status(), in_getaddr();
136 int	xns_status(), xns_getaddr();
137 int	iso_status(), iso_getaddr();
138 
139 /* Known address families */
140 struct afswtch {
141 	char *af_name;
142 	short af_af;
143 	int (*af_status)();
144 	int (*af_getaddr)();
145 	int af_difaddr;
146 	int af_aifaddr;
147 	caddr_t af_ridreq;
148 	caddr_t af_addreq;
149 } afs[] = {
150 #define C(x) ((caddr_t) &x)
151 	{ "inet", AF_INET, in_status, in_getaddr,
152 	     SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
153 	{ "ns", AF_NS, xns_status, xns_getaddr,
154 	     SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
155 	{ "iso", AF_ISO, iso_status, iso_getaddr,
156 	     SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) },
157 	{ 0,	0,	    0,		0 }
158 };
159 
160 struct afswtch *afp;	/*the address family being set or asked about*/
161 
162 main(argc, argv)
163 	int argc;
164 	char *argv[];
165 {
166 	int af = AF_INET;
167 	register struct afswtch *rafp;
168 
169 	if (argc < 2) {
170 		fprintf(stderr, "usage: ifconfig interface\n%s%s%s%s%s",
171 		    "\t[ af [ address [ dest_addr ] ] [ up ] [ down ]",
172 			    "[ netmask mask ] ]\n",
173 		    "\t[ metric n ]\n",
174 		    "\t[ arp | -arp ]\n",
175 		    "\t[ link0 | -link0 ] [ link1 | -link1 ] [ link2 | -link2 ] \n");
176 		exit(1);
177 	}
178 	argc--, argv++;
179 	strncpy(name, *argv, sizeof(name));
180 	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
181 	argc--, argv++;
182 	if (argc > 0) {
183 		for (afp = rafp = afs; rafp->af_name; rafp++)
184 			if (strcmp(rafp->af_name, *argv) == 0) {
185 				afp = rafp; argc--; argv++;
186 				break;
187 			}
188 		rafp = afp;
189 		af = ifr.ifr_addr.sa_family = rafp->af_af;
190 	}
191 	s = socket(af, SOCK_DGRAM, 0);
192 	if (s < 0) {
193 		perror("ifconfig: socket");
194 		exit(1);
195 	}
196 	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
197 		Perror("ioctl (SIOCGIFFLAGS)");
198 		exit(1);
199 	}
200 	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
201 	flags = ifr.ifr_flags;
202 	if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0)
203 		perror("ioctl (SIOCGIFMETRIC)");
204 	else
205 		metric = ifr.ifr_metric;
206 	if (argc == 0) {
207 		status();
208 		exit(0);
209 	}
210 	while (argc > 0) {
211 		register struct cmd *p;
212 
213 		for (p = cmds; p->c_name; p++)
214 			if (strcmp(*argv, p->c_name) == 0)
215 				break;
216 		if (p->c_name == 0 && setaddr)
217 			p++;	/* got src, do dst */
218 		if (p->c_func) {
219 			if (p->c_parameter == NEXTARG) {
220 				if (argv[1] == NULL)
221 					errx(1, "'%s' requires argument",
222 					    p->c_name);
223 				(*p->c_func)(argv[1]);
224 				argc--, argv++;
225 			} else
226 				(*p->c_func)(*argv, p->c_parameter);
227 		}
228 		argc--, argv++;
229 	}
230 	if (af == AF_ISO)
231 		adjust_nsellength();
232 	if (setipdst && af==AF_NS) {
233 		struct nsip_req rq;
234 		int size = sizeof(rq);
235 
236 		rq.rq_ns = addreq.ifra_addr;
237 		rq.rq_ip = addreq.ifra_dstaddr;
238 
239 		if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
240 			Perror("Encapsulation Routing");
241 	}
242 	if (clearaddr) {
243 		int ret;
244 		strncpy(rafp->af_ridreq, name, sizeof ifr.ifr_name);
245 		if ((ret = ioctl(s, rafp->af_difaddr, rafp->af_ridreq)) < 0) {
246 			if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
247 				/* means no previous address for interface */
248 			} else
249 				Perror("ioctl (SIOCDIFADDR)");
250 		}
251 	}
252 	if (newaddr) {
253 		strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name);
254 		if (ioctl(s, rafp->af_aifaddr, rafp->af_addreq) < 0)
255 			Perror("ioctl (SIOCAIFADDR)");
256 	}
257 	exit(0);
258 }
259 #define RIDADDR 0
260 #define ADDR	1
261 #define MASK	2
262 #define DSTADDR	3
263 
264 /*ARGSUSED*/
265 setifaddr(addr, param)
266 	char *addr;
267 	short param;
268 {
269 	/*
270 	 * Delay the ioctl to set the interface addr until flags are all set.
271 	 * The address interpretation may depend on the flags,
272 	 * and the flags may change when the address is set.
273 	 */
274 	setaddr++;
275 	if (doalias == 0)
276 		clearaddr = 1;
277 	(*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR));
278 }
279 
280 setifnetmask(addr)
281 	char *addr;
282 {
283 	(*afp->af_getaddr)(addr, MASK);
284 }
285 
286 setifbroadaddr(addr)
287 	char *addr;
288 {
289 	(*afp->af_getaddr)(addr, DSTADDR);
290 }
291 
292 setifipdst(addr)
293 	char *addr;
294 {
295 	in_getaddr(addr, DSTADDR);
296 	setipdst++;
297 	clearaddr = 0;
298 	newaddr = 0;
299 }
300 #define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
301 /*ARGSUSED*/
302 notealias(addr, param)
303 	char *addr;
304 {
305 	if (setaddr && doalias == 0 && param < 0)
306 		bcopy((caddr_t)rqtosa(af_addreq),
307 		      (caddr_t)rqtosa(af_ridreq),
308 		      rqtosa(af_addreq)->sa_len);
309 	doalias = param;
310 	if (param < 0) {
311 		clearaddr = 1;
312 		newaddr = 0;
313 	} else
314 		clearaddr = 0;
315 }
316 
317 /*ARGSUSED*/
318 notrailers(vname, value)
319 	char *vname;
320 	int value;
321 {
322 	printf("Note: trailers are no longer sent, but always received\n");
323 }
324 
325 /*ARGSUSED*/
326 setifdstaddr(addr, param)
327 	char *addr;
328 	int param;
329 {
330 	(*afp->af_getaddr)(addr, DSTADDR);
331 }
332 
333 setifflags(vname, value)
334 	char *vname;
335 	short value;
336 {
337  	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
338  		Perror("ioctl (SIOCGIFFLAGS)");
339  		exit(1);
340  	}
341 	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
342  	flags = ifr.ifr_flags;
343 
344 	if (value < 0) {
345 		value = -value;
346 		flags &= ~value;
347 	} else
348 		flags |= value;
349 	ifr.ifr_flags = flags;
350 	if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
351 		Perror(vname);
352 }
353 
354 setifmetric(val)
355 	char *val;
356 {
357 	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
358 	ifr.ifr_metric = atoi(val);
359 	if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
360 		perror("ioctl (set metric)");
361 }
362 
363 setsnpaoffset(val)
364 	char *val;
365 {
366 	iso_addreq.ifra_snpaoffset = atoi(val);
367 }
368 
369 #define	IFFBITS \
370 "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\
371 \11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2\20MULTICAST"
372 
373 /*
374  * Print the status of the interface.  If an address family was
375  * specified, show it and it only; otherwise, show them all.
376  */
377 status()
378 {
379 	register struct afswtch *p = afp;
380 	short af = ifr.ifr_addr.sa_family;
381 
382 	printf("%s: ", name);
383 	printb("flags", flags, IFFBITS);
384 	if (metric)
385 		printf(" metric %d", metric);
386 	putchar('\n');
387 	if ((p = afp) != NULL) {
388 		(*p->af_status)(1);
389 	} else for (p = afs; p->af_name; p++) {
390 		ifr.ifr_addr.sa_family = p->af_af;
391 		(*p->af_status)(0);
392 	}
393 }
394 
395 in_status(force)
396 	int force;
397 {
398 	struct sockaddr_in *sin;
399 	char *inet_ntoa();
400 
401 	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
402 	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
403 		if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
404 			if (!force)
405 				return;
406 			bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
407 		} else
408 			perror("ioctl (SIOCGIFADDR)");
409 	}
410 	sin = (struct sockaddr_in *)&ifr.ifr_addr;
411 	printf("\tinet %s ", inet_ntoa(sin->sin_addr));
412 	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
413 	if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) {
414 		if (errno != EADDRNOTAVAIL)
415 			perror("ioctl (SIOCGIFNETMASK)");
416 		bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
417 	} else
418 		netmask.sin_addr =
419 		    ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr;
420 	if (flags & IFF_POINTOPOINT) {
421 		if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
422 			if (errno == EADDRNOTAVAIL)
423 			    bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
424 			else
425 			    perror("ioctl (SIOCGIFDSTADDR)");
426 		}
427 		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
428 		sin = (struct sockaddr_in *)&ifr.ifr_dstaddr;
429 		printf("--> %s ", inet_ntoa(sin->sin_addr));
430 	}
431 	printf("netmask 0x%x ", ntohl(netmask.sin_addr.s_addr));
432 	if (flags & IFF_BROADCAST) {
433 		if (ioctl(s, SIOCGIFBRDADDR, (caddr_t)&ifr) < 0) {
434 			if (errno == EADDRNOTAVAIL)
435 			    bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
436 			else
437 			    perror("ioctl (SIOCGIFADDR)");
438 		}
439 		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
440 		sin = (struct sockaddr_in *)&ifr.ifr_addr;
441 		if (sin->sin_addr.s_addr != 0)
442 			printf("broadcast %s", inet_ntoa(sin->sin_addr));
443 	}
444 	putchar('\n');
445 }
446 
447 
448 xns_status(force)
449 	int force;
450 {
451 	struct sockaddr_ns *sns;
452 
453 	close(s);
454 	s = socket(AF_NS, SOCK_DGRAM, 0);
455 	if (s < 0) {
456 		if (errno == EPROTONOSUPPORT)
457 			return;
458 		perror("ifconfig: socket");
459 		exit(1);
460 	}
461 	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
462 		if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
463 			if (!force)
464 				return;
465 			bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
466 		} else
467 			perror("ioctl (SIOCGIFADDR)");
468 	}
469 	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
470 	sns = (struct sockaddr_ns *)&ifr.ifr_addr;
471 	printf("\tns %s ", ns_ntoa(sns->sns_addr));
472 	if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */
473 		if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
474 			if (errno == EADDRNOTAVAIL)
475 			    bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
476 			else
477 			    Perror("ioctl (SIOCGIFDSTADDR)");
478 		}
479 		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
480 		sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr;
481 		printf("--> %s ", ns_ntoa(sns->sns_addr));
482 	}
483 	putchar('\n');
484 }
485 
486 iso_status(force)
487 	int force;
488 {
489 	struct sockaddr_iso *siso;
490 	struct iso_ifreq ifr;
491 
492 	close(s);
493 	s = socket(AF_ISO, SOCK_DGRAM, 0);
494 	if (s < 0) {
495 		if (errno == EPROTONOSUPPORT)
496 			return;
497 		perror("ifconfig: socket");
498 		exit(1);
499 	}
500 	bzero((caddr_t)&ifr, sizeof(ifr));
501 	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
502 	if (ioctl(s, SIOCGIFADDR_ISO, (caddr_t)&ifr) < 0) {
503 		if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
504 			if (!force)
505 				return;
506 			bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
507 		} else {
508 			perror("ioctl (SIOCGIFADDR_ISO)");
509 			exit(1);
510 		}
511 	}
512 	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
513 	siso = &ifr.ifr_Addr;
514 	printf("\tiso %s ", iso_ntoa(&siso->siso_addr));
515 	if (ioctl(s, SIOCGIFNETMASK_ISO, (caddr_t)&ifr) < 0) {
516 		if (errno != EADDRNOTAVAIL)
517 			perror("ioctl (SIOCGIFNETMASK_ISO)");
518 	} else {
519 		printf(" netmask %s ", iso_ntoa(&siso->siso_addr));
520 	}
521 	if (flags & IFF_POINTOPOINT) {
522 		if (ioctl(s, SIOCGIFDSTADDR_ISO, (caddr_t)&ifr) < 0) {
523 			if (errno == EADDRNOTAVAIL)
524 			    bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
525 			else
526 			    Perror("ioctl (SIOCGIFDSTADDR_ISO)");
527 		}
528 		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
529 		siso = &ifr.ifr_Addr;
530 		printf("--> %s ", iso_ntoa(&siso->siso_addr));
531 	}
532 	putchar('\n');
533 }
534 
535 Perror(cmd)
536 	char *cmd;
537 {
538 	extern int errno;
539 
540 	switch (errno) {
541 
542 	case ENXIO:
543 		errx(1, "%s: no such interface", cmd);
544 		break;
545 
546 	case EPERM:
547 		errx(1, "%s: permission denied", cmd);
548 		break;
549 
550 	default:
551 		err(1, "%s", cmd);
552 	}
553 }
554 
555 struct	in_addr inet_makeaddr();
556 
557 #define SIN(x) ((struct sockaddr_in *) &(x))
558 struct sockaddr_in *sintab[] = {
559 SIN(ridreq.ifr_addr), SIN(addreq.ifra_addr),
560 SIN(addreq.ifra_mask), SIN(addreq.ifra_broadaddr)};
561 
562 in_getaddr(s, which)
563 	char *s;
564 {
565 	register struct sockaddr_in *sin = sintab[which];
566 	struct hostent *hp;
567 	struct netent *np;
568 	int val;
569 
570 	sin->sin_len = sizeof(*sin);
571 	if (which != MASK)
572 		sin->sin_family = AF_INET;
573 
574 	if ((val = inet_addr(s)) != -1)
575 		sin->sin_addr.s_addr = val;
576 	else if (hp = gethostbyname(s))
577 		bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length);
578 	else if (np = getnetbyname(s))
579 		sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
580 	else
581 		errx(1, "%s: bad value", s);
582 }
583 
584 /*
585  * Print a value a la the %b format of the kernel's printf
586  */
587 printb(s, v, bits)
588 	char *s;
589 	register char *bits;
590 	register unsigned short v;
591 {
592 	register int i, any = 0;
593 	register char c;
594 
595 	if (bits && *bits == 8)
596 		printf("%s=%o", s, v);
597 	else
598 		printf("%s=%x", s, v);
599 	bits++;
600 	if (bits) {
601 		putchar('<');
602 		while (i = *bits++) {
603 			if (v & (1 << (i-1))) {
604 				if (any)
605 					putchar(',');
606 				any = 1;
607 				for (; (c = *bits) > 32; bits++)
608 					putchar(c);
609 			} else
610 				for (; *bits > 32; bits++)
611 					;
612 		}
613 		putchar('>');
614 	}
615 }
616 
617 #define SNS(x) ((struct sockaddr_ns *) &(x))
618 struct sockaddr_ns *snstab[] = {
619 SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr),
620 SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)};
621 
622 xns_getaddr(addr, which)
623 char *addr;
624 {
625 	struct sockaddr_ns *sns = snstab[which];
626 	struct ns_addr ns_addr();
627 
628 	sns->sns_family = AF_NS;
629 	sns->sns_len = sizeof(*sns);
630 	sns->sns_addr = ns_addr(addr);
631 	if (which == MASK)
632 		printf("Attempt to set XNS netmask will be ineffectual\n");
633 }
634 
635 #define SISO(x) ((struct sockaddr_iso *) &(x))
636 struct sockaddr_iso *sisotab[] = {
637 SISO(iso_ridreq.ifr_Addr), SISO(iso_addreq.ifra_addr),
638 SISO(iso_addreq.ifra_mask), SISO(iso_addreq.ifra_dstaddr)};
639 
640 iso_getaddr(addr, which)
641 char *addr;
642 {
643 	register struct sockaddr_iso *siso = sisotab[which];
644 	struct iso_addr *iso_addr();
645 	siso->siso_addr = *iso_addr(addr);
646 
647 	if (which == MASK) {
648 		siso->siso_len = TSEL(siso) - (caddr_t)(siso);
649 		siso->siso_nlen = 0;
650 	} else {
651 		siso->siso_len = sizeof(*siso);
652 		siso->siso_family = AF_ISO;
653 	}
654 }
655 
656 setnsellength(val)
657 	char *val;
658 {
659 	nsellength = atoi(val);
660 	if (nsellength < 0)
661 		errx(1, "Negative NSEL length is absurd");
662 	if (afp == 0 || afp->af_af != AF_ISO)
663 		errx(1, "Setting NSEL length valid only for iso");
664 }
665 
666 fixnsel(s)
667 register struct sockaddr_iso *s;
668 {
669 	if (s->siso_family == 0)
670 		return;
671 	s->siso_tlen = nsellength;
672 }
673 
674 adjust_nsellength()
675 {
676 	fixnsel(sisotab[RIDADDR]);
677 	fixnsel(sisotab[ADDR]);
678 	fixnsel(sisotab[DSTADDR]);
679 }
680