2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include "pathnames.h"
40 #elif defined(__FreeBSD__)
43 __RCSID("$Revision: 2.26 $");
44 #ident "$Revision: 2.26 $"
48 static struct parm *parms;
49 struct intnet *intnets;
54 /* use configured parameters
57 get_parms(struct interface *ifp)
59 static int warned_auth_in, warned_auth_out;
61 int i, num_passwds = 0;
63 /* get all relevant parameters
65 for (parmp = parms; parmp != NULL; parmp = parmp->parm_next) {
66 if (parmp->parm_name[0] == '\0'
67 || !strcmp(ifp->int_name, parmp->parm_name)
68 || (parmp->parm_name[0] == '\n'
69 && on_net(ifp->int_addr,
70 parmp->parm_net, parmp->parm_mask))) {
72 /* This group of parameters is relevant,
75 ifp->int_state |= parmp->parm_int_state;
76 for (i = 0; i < MAX_AUTH_KEYS; i++) {
77 if (parmp->parm_auth[0].type == RIP_AUTH_NONE
78 || num_passwds >= MAX_AUTH_KEYS)
80 memcpy(&ifp->int_auth[num_passwds++],
82 sizeof(ifp->int_auth[0]));
84 if (parmp->parm_rdisc_pref != 0)
85 ifp->int_rdisc_pref = parmp->parm_rdisc_pref;
86 if (parmp->parm_rdisc_int != 0)
87 ifp->int_rdisc_int = parmp->parm_rdisc_int;
88 if (parmp->parm_adj_inmetric != 0)
89 ifp->int_adj_inmetric = parmp->parm_adj_inmetric;
90 if (parmp->parm_adj_outmetric != 0)
91 ifp->int_adj_outmetric = parmp->parm_adj_outmetric;
95 /* Set general defaults.
97 * Default poor-man's router discovery to a metric that will
98 * be heard by old versions of `routed`. They ignored received
99 * routes with metric 15.
101 if ((ifp->int_state & IS_PM_RDISC)
102 && ifp->int_d_metric == 0)
103 ifp->int_d_metric = FAKE_METRIC;
105 if (ifp->int_rdisc_int == 0)
106 ifp->int_rdisc_int = DefMaxAdvertiseInterval;
108 if (!(ifp->int_if_flags & IFF_MULTICAST)
109 && !(ifp->int_state & IS_REMOTE))
110 ifp->int_state |= IS_BCAST_RDISC;
112 if (ifp->int_if_flags & IFF_POINTOPOINT) {
113 ifp->int_state |= IS_BCAST_RDISC;
114 /* By default, point-to-point links should be passive
115 * about router-discovery for the sake of demand-dialing.
117 if (0 == (ifp->int_state & GROUP_IS_SOL_OUT))
118 ifp->int_state |= IS_NO_SOL_OUT;
119 if (0 == (ifp->int_state & GROUP_IS_ADV_OUT))
120 ifp->int_state |= IS_NO_ADV_OUT;
123 if (0 != (ifp->int_state & (IS_PASSIVE | IS_REMOTE)))
124 ifp->int_state |= IS_NO_RDISC;
125 if (ifp->int_state & IS_PASSIVE)
126 ifp->int_state |= IS_NO_RIP;
128 if (!IS_RIP_IN_OFF(ifp->int_state)
129 && ifp->int_auth[0].type != RIP_AUTH_NONE
130 && !(ifp->int_state & IS_NO_RIPV1_IN)
131 && !warned_auth_in) {
132 msglog("Warning: RIPv1 input via %s"
133 " will be accepted without authentication",
137 if (!IS_RIP_OUT_OFF(ifp->int_state)
138 && ifp->int_auth[0].type != RIP_AUTH_NONE
139 && !(ifp->int_state & IS_NO_RIPV1_OUT)) {
140 if (!warned_auth_out) {
141 msglog("Warning: RIPv1 output via %s"
142 " will be sent without authentication",
150 /* Read a list of gateways from /etc/gateways and add them to our tables.
152 * This file contains a list of "remote" gateways. That is usually
153 * a gateway which we cannot immediately determine if it is present or
154 * not as we can do for those provided by directly connected hardware.
156 * If a gateway is marked "passive" in the file, then we assume it
157 * does not understand RIP and assume it is always present. Those
158 * not marked passive are treated as if they were directly connected
159 * and assumed to be broken if they do not send us advertisements.
160 * All remote interfaces are added to our list, and those not marked
161 * passive are sent routing updates.
163 * A passive interface can also be local, hardware interface exempt
172 char lbuf[200], net_host[5], dname[64+1+64+1];
173 char gname[GNAME_LEN+1], qual[9];
174 struct interface *ifp;
175 naddr dst, netmask, gate;
182 fp = fopen(_PATH_GATEWAYS, "r");
186 if (0 > fstat(fileno(fp), &sb)) {
187 msglog("could not stat() "_PATH_GATEWAYS);
192 for (lnum = 1; ; lnum++) {
193 if (fgets(lbuf, sizeof(lbuf), fp) == NULL)
198 p = lptr+strlen(lptr)-1;
200 || (*p == ' ' && (p == lptr+1 || *(p-1) != '\\')))
202 if (*lptr == '\0' /* ignore null and comment lines */
206 /* notice newfangled parameter lines
208 if (strncasecmp("net", lptr, 3)
209 && strncasecmp("host", lptr, 4)) {
210 cp = parse_parms(lptr,
212 && !(sb.st_mode&(S_IRWXG|S_IRWXO))));
214 msglog("%s in line %d of "_PATH_GATEWAYS,
219 /* {net | host} XX[/M] XX gateway XX metric DD [passive | external]\n */
221 /* the '64' here must be GNAME_LEN */
222 n = sscanf(lptr, "%4s %129[^ \t] gateway"
223 " %64[^ / \t] metric %u %8s\n",
224 net_host, dname, gname, &metric, qual);
225 if (n != 4 && n != 5) {
226 msglog("bad "_PATH_GATEWAYS" entry \"%s\"; %d values",
230 if (metric >= HOPCNT_INFINITY) {
231 msglog("bad metric in "_PATH_GATEWAYS" entry \"%s\"",
235 if (!strcasecmp(net_host, "host")) {
236 if (!gethost(dname, &dst)) {
237 msglog("bad host \"%s\" in "_PATH_GATEWAYS
238 " entry \"%s\"", dname, lptr);
242 } else if (!strcasecmp(net_host, "net")) {
243 if (!getnet(dname, &dst, &netmask)) {
244 msglog("bad net \"%s\" in "_PATH_GATEWAYS
245 " entry \"%s\"", dname, lptr);
248 if (dst == RIP_DEFAULT) {
249 msglog("bad net \"%s\" in "_PATH_GATEWAYS
250 " entry \"%s\"--cannot be default",
254 /* Turn network # into IP address. */
257 msglog("bad \"%s\" in "_PATH_GATEWAYS
258 " entry \"%s\"", net_host, lptr);
262 if (!gethost(gname, &gate)) {
263 msglog("bad gateway \"%s\" in "_PATH_GATEWAYS
264 " entry \"%s\"", gname, lptr);
268 if (!strcasecmp(qual, type = "passive")) {
269 /* Passive entries are not placed in our tables,
270 * only the kernel's, so we don't copy all of the
271 * external routing information within a net.
272 * Internal machines should use the default
273 * route to a suitable gateway (like us).
275 state = IS_REMOTE | IS_PASSIVE;
279 } else if (!strcasecmp(qual, type = "external")) {
280 /* External entries are handled by other means
281 * such as EGP, and are placed only in the daemon
282 * tables to prevent overriding them with something
285 strcpy(qual,"external");
286 state = IS_REMOTE | IS_PASSIVE | IS_EXTERNAL;
290 } else if (!strcasecmp(qual, "active")
291 || qual[0] == '\0') {
293 /* Entries that are neither "passive" nor
294 * "external" are "remote" and must behave
295 * like physical interfaces. If they are not
296 * heard from regularly, they are deleted.
301 /* "remote" entries with a metric of 0
302 * are aliases for our own interfaces
304 state = IS_REMOTE | IS_PASSIVE | IS_ALIAS;
309 msglog("bad "_PATH_GATEWAYS" entry \"%s\";"
310 " unknown type %s", lptr, qual);
314 if (0 != (state & (IS_PASSIVE | IS_REMOTE)))
315 state |= IS_NO_RDISC;
316 if (state & IS_PASSIVE)
319 ifp = check_dup(gate,dst,netmask,state);
321 msglog("duplicate "_PATH_GATEWAYS" entry \"%s\"",lptr);
325 ifp = (struct interface *)rtmalloc(sizeof(*ifp), "gwkludge()");
326 memset(ifp, 0, sizeof(*ifp));
328 ifp->int_state = state;
329 if (netmask == HOST_MASK)
330 ifp->int_if_flags = IFF_POINTOPOINT | IFF_UP;
332 ifp->int_if_flags = IFF_UP;
333 ifp->int_act_time = NEVER;
334 ifp->int_addr = gate;
335 ifp->int_dstaddr = dst;
336 ifp->int_mask = netmask;
337 ifp->int_ripv1_mask = netmask;
338 ifp->int_std_mask = std_mask(gate);
339 ifp->int_net = ntohl(dst);
340 ifp->int_std_net = ifp->int_net & ifp->int_std_mask;
341 ifp->int_std_addr = htonl(ifp->int_std_net);
342 ifp->int_metric = metric;
343 if (!(state & IS_EXTERNAL)
344 && ifp->int_mask != ifp->int_std_mask)
345 ifp->int_state |= IS_SUBNET;
346 (void)sprintf(ifp->int_name, "%s(%s)", type, gname);
352 /* After all of the parameter lines have been read,
353 * apply them to any remote interfaces.
355 LIST_FOREACH(ifp, &ifnet, int_list) {
359 if (!IS_RIP_OFF(ifp->int_state))
362 trace_if("Add", ifp);
369 /* like strtok(), but honoring backslash and not changing the source string
371 static int /* 0=ok, -1=bad */
372 parse_quote(char **linep, /* look here */
373 const char *delims, /* for these delimiters */
374 char *delimp, /* 0 or put found delimiter here */
375 char *buf, /* copy token to here */
376 int lim) /* at most this many bytes */
391 if (c == '\\' && *pc != '\0') {
392 if ((c = *pc++) == 'n') {
394 } else if (c == 'r') {
396 } else if (c == 't') {
398 } else if (c == 'b') {
400 } else if (c >= '0' && c <= '7') {
402 if (*pc >= '0' && *pc <= '7') {
403 c = (c<<3)+(*pc++ - '0');
404 if (*pc >= '0' && *pc <= '7')
405 c = (c<<3)+(*pc++ - '0');
410 for (p = delims; *p != '\0'; ++p) {
423 *buf = '\0'; /* terminate copy of token */
425 *delimp = c; /* return delimiter */
426 *linep = pc-1; /* say where we ended */
431 /* Parse password timestamp
444 if (0 > parse_quote(valp, "| ,\n\r", delimp,
446 || buf[bufsize-1] != '\0'
447 || buf[bufsize-2] != '\0') {
448 sprintf(buf,"bad timestamp %.25s", val0);
452 memset(&tm, 0, sizeof(tm));
453 ptr = strptime(buf, "%y/%m/%d@%H:%M\n", &tm);
454 if (ptr == NULL || *ptr != '\0') {
455 sprintf(buf,"bad timestamp %.25s", val0);
459 if ((*tp = mktime(&tm)) == -1) {
460 sprintf(buf,"bad timestamp %.25s", val0);
468 /* Get a password, key ID, and expiration date in the format
469 * passwd|keyID|year/mon/day@hour:min|year/mon/day@hour:min
471 static const char * /* 0 or error message */
472 get_passwd(char *tgt,
476 int safe) /* 1=from secure file */
479 char *val0, *p, delim;
480 struct auth k, *ap, *ap2;
486 return "ignore unsafe password";
488 for (ap = parmp->parm_auth, i = 0;
489 ap->type != RIP_AUTH_NONE; i++, ap++) {
490 if (i >= MAX_AUTH_KEYS)
491 return "too many passwords";
494 memset(&k, 0, sizeof(k));
499 if (0 > parse_quote(&val, "| ,\n\r", &delim,
500 (char *)k.key, sizeof(k.key)))
504 if (type == RIP_AUTH_MD5)
505 return "missing Keyid";
508 buf[sizeof(buf)-1] = '\0';
509 if (0 > parse_quote(&val, "| ,\n\r", &delim, buf,sizeof(buf))
510 || buf[sizeof(buf)-1] != '\0'
511 || (l = strtoul(buf,&p,0)) > 255
513 sprintf(buf,"bad KeyID \"%.20s\"", val0);
516 for (ap2 = parmp->parm_auth; ap2 < ap; ap2++) {
517 if (ap2->keyid == l) {
518 sprintf(buf,"duplicate KeyID \"%.20s\"", val0);
526 if (NULL != (p = parse_ts(&k.start,&val,val0,&delim,
530 return "missing second timestamp";
532 if (NULL != (p = parse_ts(&k.end,&val,val0,&delim,
535 if ((u_long)k.start > (u_long)k.end) {
536 sprintf(buf,"out of order timestamp %.30s",
545 memmove(ap, &k, sizeof(*ap));
551 bad_str(const char *estr)
553 static char buf[100+8];
555 sprintf(buf, "bad \"%.100s\"", estr);
560 /* Parse a set of parameters for an interface.
562 const char * /* 0 or error message */
563 parse_parms(char *line,
564 int safe) /* 1=from secure file */
566 #define PARS(str) (!strcasecmp(tgt, str))
567 #define PARSEQ(str) (!strncasecmp(tgt, str"=", sizeof(str)))
568 #define CKF(g,b) {if (0 != (parm.parm_int_state & ((g) & ~(b)))) break; \
569 parm.parm_int_state |= (b);}
571 struct intnet *intnetp;
572 struct r1net *r1netp;
575 char delim, *val0 = NULL, *tgt, *val, *p;
577 char buf[BUFSIZ], buf2[BUFSIZ];
581 /* "subnet=x.y.z.u/mask[,metric]" must be alone on the line */
582 if (!strncasecmp(line, "subnet=", sizeof("subnet=")-1)
583 && *(val = &line[sizeof("subnet=")-1]) != '\0') {
584 if (0 > parse_quote(&val, ",", &delim, buf, sizeof(buf)))
585 return bad_str(line);
586 intnetp = (struct intnet*)rtmalloc(sizeof(*intnetp),
587 "parse_parms subnet");
588 intnetp->intnet_metric = 1;
590 intnetp->intnet_metric = (int)strtol(val+1,&p,0);
592 || intnetp->intnet_metric <= 0
593 || intnetp->intnet_metric >= HOPCNT_INFINITY) {
595 return bad_str(line);
598 if (!getnet(buf, &intnetp->intnet_addr, &intnetp->intnet_mask)
599 || intnetp->intnet_mask == HOST_MASK
600 || intnetp->intnet_addr == RIP_DEFAULT) {
602 return bad_str(line);
604 intnetp->intnet_addr = htonl(intnetp->intnet_addr);
605 intnetp->intnet_next = intnets;
610 /* "ripv1_mask=x.y.z.u/mask1,mask2" must be alone on the line.
611 * This requires that x.y.z.u/mask1 be considered a subnet of
612 * x.y.z.u/mask2, as if x.y.z.u/mask2 were a class-full network.
614 if (!strncasecmp(line, "ripv1_mask=", sizeof("ripv1_mask=")-1)
615 && *(val = &line[sizeof("ripv1_mask=")-1]) != '\0') {
616 if (0 > parse_quote(&val, ",", &delim, buf, sizeof(buf))
618 return bad_str(line);
619 if ((i = (int)strtol(val+1, &p, 0)) <= 0
620 || i > 32 || *p != '\0')
621 return bad_str(line);
622 r1netp = (struct r1net *)rtmalloc(sizeof(*r1netp),
623 "parse_parms ripv1_mask");
624 r1netp->r1net_mask = HOST_MASK << (32-i);
625 if (!getnet(buf, &r1netp->r1net_net, &r1netp->r1net_match)
626 || r1netp->r1net_net == RIP_DEFAULT
627 || r1netp->r1net_mask > r1netp->r1net_match) {
629 return bad_str(line);
631 r1netp->r1net_next = r1nets;
636 memset(&parm, 0, sizeof(parm));
639 tgt = line + strspn(line, " ,\n\r");
640 if (*tgt == '\0' || *tgt == '#')
642 line = tgt+strcspn(tgt, "= #,\n\r");
646 if (0 > parse_quote(&line, " #,\n\r",&delim,
659 || (delim = *line) != ' ')
665 if (parm.parm_name[0] != '\0'
666 || strlen(buf) > IF_NAME_LEN)
668 strcpy(parm.parm_name, buf);
670 } else if (PARSEQ("addr")) {
671 /* This is a bad idea, because the address based
672 * sets of parameters cannot be checked for
673 * consistency with the interface name parameters.
674 * The parm_net stuff is needed to allow several
677 if (val0 == NULL || !getnet(val0, &addr, &mask)
678 || parm.parm_name[0] != '\0')
680 parm.parm_net = addr;
681 parm.parm_mask = mask;
682 parm.parm_name[0] = '\n';
684 } else if (PARSEQ("passwd")) {
685 /* since cleartext passwords are so weak allow
689 return bad_str("no passwd");
690 msg = get_passwd(tgt,val0,&parm,RIP_AUTH_PW,1);
696 } else if (PARSEQ("md5_passwd")) {
697 msg = get_passwd(tgt,val0,&parm,RIP_AUTH_MD5,safe);
703 } else if (PARS("no_ag")) {
704 parm.parm_int_state |= (IS_NO_AG | IS_NO_SUPER_AG);
706 } else if (PARS("no_super_ag")) {
707 parm.parm_int_state |= IS_NO_SUPER_AG;
709 } else if (PARS("no_rip_out")) {
710 parm.parm_int_state |= IS_NO_RIP_OUT;
712 } else if (PARS("no_ripv1_in")) {
713 parm.parm_int_state |= IS_NO_RIPV1_IN;
715 } else if (PARS("no_ripv2_in")) {
716 parm.parm_int_state |= IS_NO_RIPV2_IN;
718 } else if (PARS("ripv2_out")) {
719 if (parm.parm_int_state & IS_NO_RIPV2_OUT)
721 parm.parm_int_state |= IS_NO_RIPV1_OUT;
723 } else if (PARS("ripv2")) {
724 if ((parm.parm_int_state & IS_NO_RIPV2_OUT)
725 || (parm.parm_int_state & IS_NO_RIPV2_IN))
727 parm.parm_int_state |= (IS_NO_RIPV1_IN
730 } else if (PARS("no_rip")) {
731 CKF(IS_PM_RDISC, IS_NO_RIP);
733 } else if (PARS("no_rip_mcast")) {
734 parm.parm_int_state |= IS_NO_RIP_MCAST;
736 } else if (PARS("no_rdisc")) {
737 CKF((GROUP_IS_SOL_OUT|GROUP_IS_ADV_OUT), IS_NO_RDISC);
739 } else if (PARS("no_solicit")) {
740 CKF(GROUP_IS_SOL_OUT, IS_NO_SOL_OUT);
742 } else if (PARS("send_solicit")) {
743 CKF(GROUP_IS_SOL_OUT, IS_SOL_OUT);
745 } else if (PARS("no_rdisc_adv")) {
746 CKF(GROUP_IS_ADV_OUT, IS_NO_ADV_OUT);
748 } else if (PARS("rdisc_adv")) {
749 CKF(GROUP_IS_ADV_OUT, IS_ADV_OUT);
751 } else if (PARS("bcast_rdisc")) {
752 parm.parm_int_state |= IS_BCAST_RDISC;
754 } else if (PARS("passive")) {
755 CKF((GROUP_IS_SOL_OUT|GROUP_IS_ADV_OUT), IS_NO_RDISC);
756 parm.parm_int_state |= IS_NO_RIP | IS_PASSIVE;
758 } else if (PARSEQ("rdisc_pref")) {
759 if (parm.parm_rdisc_pref != 0
760 || (parm.parm_rdisc_pref = (int)strtol(buf,&p,0),
764 } else if (PARS("pm_rdisc")) {
765 if (IS_RIP_OUT_OFF(parm.parm_int_state))
767 parm.parm_int_state |= IS_PM_RDISC;
769 } else if (PARSEQ("rdisc_interval")) {
770 if (parm.parm_rdisc_int != 0
771 || (parm.parm_rdisc_int = (int)strtoul(buf,&p,0),
773 || parm.parm_rdisc_int < MinMaxAdvertiseInterval
774 || parm.parm_rdisc_int > MaxMaxAdvertiseInterval)
777 } else if (PARSEQ("fake_default")) {
778 if (parm.parm_d_metric != 0
779 || IS_RIP_OUT_OFF(parm.parm_int_state)
780 || (i = strtoul(buf,&p,0), *p != '\0')
781 || i > HOPCNT_INFINITY-1)
783 parm.parm_d_metric = i;
785 } else if (PARSEQ("adj_inmetric")) {
786 if (parm.parm_adj_inmetric != 0
787 || (i = strtoul(buf,&p,0), *p != '\0')
788 || i > HOPCNT_INFINITY-1)
790 parm.parm_adj_inmetric = i;
792 } else if (PARSEQ("adj_outmetric")) {
793 if (parm.parm_adj_outmetric != 0
794 || (i = strtoul(buf,&p,0), *p != '\0')
795 || i > HOPCNT_INFINITY-1)
797 parm.parm_adj_outmetric = i;
799 } else if (PARSEQ("trust_gateway")) {
800 /* look for trust_gateway=x.y.z|net/mask|...) */
802 if (0 > parse_quote(&p, "|", &delim,
804 || !gethost(buf2,&addr))
806 tg = (struct tgate *)rtmalloc(sizeof(*tg),
809 memset(tg, 0, sizeof(*tg));
810 tg->tgate_addr = addr;
812 /* The default is to trust all routes. */
813 while (delim == '|') {
815 if (i >= MAX_TGATE_NETS
816 || 0 > parse_quote(&p, "|", &delim,
818 || !getnet(buf2, &tg->tgate_nets[i].net,
819 &tg->tgate_nets[i].mask)
820 || tg->tgate_nets[i].net == RIP_DEFAULT
821 || tg->tgate_nets[i].mask == 0) {
827 tg->tgate_next = tgates;
829 parm.parm_int_state |= IS_DISTRUST;
831 } else if (PARS("redirect_ok")) {
832 parm.parm_int_state |= IS_REDIRECT_OK;
835 return bad_str(tgt); /* error */
839 return check_parms(&parm);
845 /* check for duplicate parameter specifications */
846 const char * /* 0 or error message */
847 check_parms(struct parm *new)
849 struct parm *parmp, **parmpp;
852 /* set implicit values
854 if (new->parm_int_state & IS_NO_ADV_IN)
855 new->parm_int_state |= IS_NO_SOL_OUT;
856 if (new->parm_int_state & IS_NO_SOL_OUT)
857 new->parm_int_state |= IS_NO_ADV_IN;
859 for (i = num_passwds = 0; i < MAX_AUTH_KEYS; i++) {
860 if (new->parm_auth[i].type != RIP_AUTH_NONE)
864 /* compare with existing sets of parameters
866 for (parmpp = &parms;
867 (parmp = *parmpp) != NULL;
868 parmpp = &parmp->parm_next) {
869 if (strcmp(new->parm_name, parmp->parm_name))
871 if (!on_net(htonl(parmp->parm_net),
872 new->parm_net, new->parm_mask)
873 && !on_net(htonl(new->parm_net),
874 parmp->parm_net, parmp->parm_mask))
877 for (i = 0; i < MAX_AUTH_KEYS; i++) {
878 if (parmp->parm_auth[i].type != RIP_AUTH_NONE)
881 if (num_passwds > MAX_AUTH_KEYS)
882 return "too many conflicting passwords";
884 if ((0 != (new->parm_int_state & GROUP_IS_SOL_OUT)
885 && 0 != (parmp->parm_int_state & GROUP_IS_SOL_OUT)
886 && 0 != ((new->parm_int_state ^ parmp->parm_int_state)
888 || (0 != (new->parm_int_state & GROUP_IS_ADV_OUT)
889 && 0 != (parmp->parm_int_state & GROUP_IS_ADV_OUT)
890 && 0 != ((new->parm_int_state ^ parmp->parm_int_state)
892 || (new->parm_rdisc_pref != 0
893 && parmp->parm_rdisc_pref != 0
894 && new->parm_rdisc_pref != parmp->parm_rdisc_pref)
895 || (new->parm_rdisc_int != 0
896 && parmp->parm_rdisc_int != 0
897 && new->parm_rdisc_int != parmp->parm_rdisc_int)) {
898 return ("conflicting, duplicate router discovery"
903 if (new->parm_d_metric != 0
904 && parmp->parm_d_metric != 0
905 && new->parm_d_metric != parmp->parm_d_metric) {
906 return ("conflicting, duplicate poor man's router"
907 " discovery or fake default metric");
910 if (new->parm_adj_inmetric != 0
911 && parmp->parm_adj_inmetric != 0
912 && new->parm_adj_inmetric != parmp->parm_adj_inmetric) {
913 return ("conflicting interface input "
914 "metric adjustments");
917 if (new->parm_adj_outmetric != 0
918 && parmp->parm_adj_outmetric != 0
919 && new->parm_adj_outmetric != parmp->parm_adj_outmetric) {
920 return ("conflicting interface output "
921 "metric adjustments");
925 /* link new entry on the list so that when the entries are scanned,
926 * they affect the result in the order the operator specified.
928 parmp = (struct parm*)rtmalloc(sizeof(*parmp), "check_parms");
929 memcpy(parmp, new, sizeof(*parmp));
936 /* get a network number as a name or a number, with an optional "/xx"
941 naddr *netp, /* network in host byte order */
942 naddr *maskp) /* masks are always in host order */
946 naddr mask; /* in host byte order */
947 struct in_addr in; /* a network and so host byte order */
948 char hname[MAXHOSTNAMELEN+1];
952 /* Detect and separate "1.2.3.4/24"
954 if (NULL != (mname = strrchr(name,'/'))) {
955 i = (int)(mname - name);
956 if (i > (int)sizeof(hname)-1) /* name too long */
958 memmove(hname, name, i);
964 np = getnetbyname(name);
966 in.s_addr = (naddr)np->n_net;
967 if (0 == (in.s_addr & 0xff000000))
969 if (0 == (in.s_addr & 0xff000000))
971 if (0 == (in.s_addr & 0xff000000))
973 } else if (inet_aton(name, &in) == 1) {
974 in.s_addr = ntohl(in.s_addr);
975 } else if (!mname && !strcasecmp(name,"default")) {
976 in.s_addr = RIP_DEFAULT;
982 /* we cannot use the interfaces here because we have not
983 * looked at them yet.
985 mask = std_mask(htonl(in.s_addr));
986 if ((~mask & in.s_addr) != 0)
989 mask = (naddr)strtoul(mname, &p, 0);
990 if (*p != '\0' || mask > 32)
993 mask = HOST_MASK << (32-mask);
996 /* must have mask of 0 with default */
997 if (mask != 0 && in.s_addr == RIP_DEFAULT)
999 /* no host bits allowed in a network number */
1000 if ((~mask & in.s_addr) != 0)
1002 /* require non-zero network number */
1003 if ((mask & in.s_addr) == 0 && in.s_addr != RIP_DEFAULT)
1005 if (in.s_addr>>24 == 0 && in.s_addr != RIP_DEFAULT)
1007 if (in.s_addr>>24 == 0xff)
1024 /* Try for a number first, even in IRIX where gethostbyname()
1025 * is smart. This avoids hitting the name server which
1026 * might be sick because routing is.
1028 if (inet_aton(name, &in) == 1) {
1029 /* get a good number, but check that it it makes some
1032 if (ntohl(in.s_addr)>>24 == 0
1033 || ntohl(in.s_addr)>>24 == 0xff)
1039 hp = gethostbyname(name);
1041 memcpy(addrp, hp->h_addr, sizeof(*addrp));