2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include "pathnames.h"
38 #elif defined(__FreeBSD__)
41 __RCSID("$Revision: 2.26 $");
42 #ident "$Revision: 2.26 $"
46 static struct parm *parms;
47 struct intnet *intnets;
52 /* use configured parameters
55 get_parms(struct interface *ifp)
57 static int warned_auth_in, warned_auth_out;
59 int i, num_passwds = 0;
61 /* get all relevant parameters
63 for (parmp = parms; parmp != NULL; parmp = parmp->parm_next) {
64 if (parmp->parm_name[0] == '\0'
65 || !strcmp(ifp->int_name, parmp->parm_name)
66 || (parmp->parm_name[0] == '\n'
67 && on_net(ifp->int_addr,
68 parmp->parm_net, parmp->parm_mask))) {
70 /* This group of parameters is relevant,
73 ifp->int_state |= parmp->parm_int_state;
74 for (i = 0; i < MAX_AUTH_KEYS; i++) {
75 if (parmp->parm_auth[0].type == RIP_AUTH_NONE
76 || num_passwds >= MAX_AUTH_KEYS)
78 memcpy(&ifp->int_auth[num_passwds++],
80 sizeof(ifp->int_auth[0]));
82 if (parmp->parm_rdisc_pref != 0)
83 ifp->int_rdisc_pref = parmp->parm_rdisc_pref;
84 if (parmp->parm_rdisc_int != 0)
85 ifp->int_rdisc_int = parmp->parm_rdisc_int;
86 if (parmp->parm_adj_inmetric != 0)
87 ifp->int_adj_inmetric = parmp->parm_adj_inmetric;
88 if (parmp->parm_adj_outmetric != 0)
89 ifp->int_adj_outmetric = parmp->parm_adj_outmetric;
93 /* Set general defaults.
95 * Default poor-man's router discovery to a metric that will
96 * be heard by old versions of `routed`. They ignored received
97 * routes with metric 15.
99 if ((ifp->int_state & IS_PM_RDISC)
100 && ifp->int_d_metric == 0)
101 ifp->int_d_metric = FAKE_METRIC;
103 if (ifp->int_rdisc_int == 0)
104 ifp->int_rdisc_int = DefMaxAdvertiseInterval;
106 if (!(ifp->int_if_flags & IFF_MULTICAST)
107 && !(ifp->int_state & IS_REMOTE))
108 ifp->int_state |= IS_BCAST_RDISC;
110 if (ifp->int_if_flags & IFF_POINTOPOINT) {
111 ifp->int_state |= IS_BCAST_RDISC;
112 /* By default, point-to-point links should be passive
113 * about router-discovery for the sake of demand-dialing.
115 if (0 == (ifp->int_state & GROUP_IS_SOL_OUT))
116 ifp->int_state |= IS_NO_SOL_OUT;
117 if (0 == (ifp->int_state & GROUP_IS_ADV_OUT))
118 ifp->int_state |= IS_NO_ADV_OUT;
121 if (0 != (ifp->int_state & (IS_PASSIVE | IS_REMOTE)))
122 ifp->int_state |= IS_NO_RDISC;
123 if (ifp->int_state & IS_PASSIVE)
124 ifp->int_state |= IS_NO_RIP;
126 if (!IS_RIP_IN_OFF(ifp->int_state)
127 && ifp->int_auth[0].type != RIP_AUTH_NONE
128 && !(ifp->int_state & IS_NO_RIPV1_IN)
129 && !warned_auth_in) {
130 msglog("Warning: RIPv1 input via %s"
131 " will be accepted without authentication",
135 if (!IS_RIP_OUT_OFF(ifp->int_state)
136 && ifp->int_auth[0].type != RIP_AUTH_NONE
137 && !(ifp->int_state & IS_NO_RIPV1_OUT)) {
138 if (!warned_auth_out) {
139 msglog("Warning: RIPv1 output via %s"
140 " will be sent without authentication",
148 /* Read a list of gateways from /etc/gateways and add them to our tables.
150 * This file contains a list of "remote" gateways. That is usually
151 * a gateway which we cannot immediately determine if it is present or
152 * not as we can do for those provided by directly connected hardware.
154 * If a gateway is marked "passive" in the file, then we assume it
155 * does not understand RIP and assume it is always present. Those
156 * not marked passive are treated as if they were directly connected
157 * and assumed to be broken if they do not send us advertisements.
158 * All remote interfaces are added to our list, and those not marked
159 * passive are sent routing updates.
161 * A passive interface can also be local, hardware interface exempt
170 char lbuf[200], net_host[5], dname[64+1+64+1];
171 char gname[GNAME_LEN+1], qual[9];
172 struct interface *ifp;
173 naddr dst, netmask, gate;
180 fp = fopen(_PATH_GATEWAYS, "r");
184 if (0 > fstat(fileno(fp), &sb)) {
185 msglog("could not stat() "_PATH_GATEWAYS);
190 for (lnum = 1; ; lnum++) {
191 if (fgets(lbuf, sizeof(lbuf), fp) == NULL)
196 p = lptr+strlen(lptr)-1;
198 || (*p == ' ' && (p == lptr+1 || *(p-1) != '\\')))
200 if (*lptr == '\0' /* ignore null and comment lines */
204 /* notice newfangled parameter lines
206 if (strncasecmp("net", lptr, 3)
207 && strncasecmp("host", lptr, 4)) {
208 cp = parse_parms(lptr,
210 && !(sb.st_mode&(S_IRWXG|S_IRWXO))));
212 msglog("%s in line %d of "_PATH_GATEWAYS,
217 /* {net | host} XX[/M] XX gateway XX metric DD [passive | external]\n */
219 /* the '64' here must be GNAME_LEN */
220 n = sscanf(lptr, "%4s %129[^ \t] gateway"
221 " %64[^ / \t] metric %u %8s\n",
222 net_host, dname, gname, &metric, qual);
223 if (n != 4 && n != 5) {
224 msglog("bad "_PATH_GATEWAYS" entry \"%s\"; %d values",
228 if (metric >= HOPCNT_INFINITY) {
229 msglog("bad metric in "_PATH_GATEWAYS" entry \"%s\"",
233 if (!strcasecmp(net_host, "host")) {
234 if (!gethost(dname, &dst)) {
235 msglog("bad host \"%s\" in "_PATH_GATEWAYS
236 " entry \"%s\"", dname, lptr);
240 } else if (!strcasecmp(net_host, "net")) {
241 if (!getnet(dname, &dst, &netmask)) {
242 msglog("bad net \"%s\" in "_PATH_GATEWAYS
243 " entry \"%s\"", dname, lptr);
246 if (dst == RIP_DEFAULT) {
247 msglog("bad net \"%s\" in "_PATH_GATEWAYS
248 " entry \"%s\"--cannot be default",
252 /* Turn network # into IP address. */
255 msglog("bad \"%s\" in "_PATH_GATEWAYS
256 " entry \"%s\"", net_host, lptr);
260 if (!gethost(gname, &gate)) {
261 msglog("bad gateway \"%s\" in "_PATH_GATEWAYS
262 " entry \"%s\"", gname, lptr);
266 if (!strcasecmp(qual, type = "passive")) {
267 /* Passive entries are not placed in our tables,
268 * only the kernel's, so we don't copy all of the
269 * external routing information within a net.
270 * Internal machines should use the default
271 * route to a suitable gateway (like us).
273 state = IS_REMOTE | IS_PASSIVE;
277 } else if (!strcasecmp(qual, type = "external")) {
278 /* External entries are handled by other means
279 * such as EGP, and are placed only in the daemon
280 * tables to prevent overriding them with something
283 strcpy(qual,"external");
284 state = IS_REMOTE | IS_PASSIVE | IS_EXTERNAL;
288 } else if (!strcasecmp(qual, "active")
289 || qual[0] == '\0') {
291 /* Entries that are neither "passive" nor
292 * "external" are "remote" and must behave
293 * like physical interfaces. If they are not
294 * heard from regularly, they are deleted.
299 /* "remote" entries with a metric of 0
300 * are aliases for our own interfaces
302 state = IS_REMOTE | IS_PASSIVE | IS_ALIAS;
307 msglog("bad "_PATH_GATEWAYS" entry \"%s\";"
308 " unknown type %s", lptr, qual);
312 if (0 != (state & (IS_PASSIVE | IS_REMOTE)))
313 state |= IS_NO_RDISC;
314 if (state & IS_PASSIVE)
317 ifp = check_dup(gate,dst,netmask,state);
319 msglog("duplicate "_PATH_GATEWAYS" entry \"%s\"",lptr);
323 ifp = (struct interface *)rtmalloc(sizeof(*ifp), "gwkludge()");
324 memset(ifp, 0, sizeof(*ifp));
326 ifp->int_state = state;
327 if (netmask == HOST_MASK)
328 ifp->int_if_flags = IFF_POINTOPOINT | IFF_UP;
330 ifp->int_if_flags = IFF_UP;
331 ifp->int_act_time = NEVER;
332 ifp->int_addr = gate;
333 ifp->int_dstaddr = dst;
334 ifp->int_mask = netmask;
335 ifp->int_ripv1_mask = netmask;
336 ifp->int_std_mask = std_mask(gate);
337 ifp->int_net = ntohl(dst);
338 ifp->int_std_net = ifp->int_net & ifp->int_std_mask;
339 ifp->int_std_addr = htonl(ifp->int_std_net);
340 ifp->int_metric = metric;
341 if (!(state & IS_EXTERNAL)
342 && ifp->int_mask != ifp->int_std_mask)
343 ifp->int_state |= IS_SUBNET;
344 (void)sprintf(ifp->int_name, "%s(%s)", type, gname);
350 /* After all of the parameter lines have been read,
351 * apply them to any remote interfaces.
353 LIST_FOREACH(ifp, &ifnet, int_list) {
357 if (!IS_RIP_OFF(ifp->int_state))
360 trace_if("Add", ifp);
367 /* like strtok(), but honoring backslash and not changing the source string
369 static int /* 0=ok, -1=bad */
370 parse_quote(char **linep, /* look here */
371 const char *delims, /* for these delimiters */
372 char *delimp, /* 0 or put found delimiter here */
373 char *buf, /* copy token to here */
374 int lim) /* at most this many bytes */
389 if (c == '\\' && *pc != '\0') {
390 if ((c = *pc++) == 'n') {
392 } else if (c == 'r') {
394 } else if (c == 't') {
396 } else if (c == 'b') {
398 } else if (c >= '0' && c <= '7') {
400 if (*pc >= '0' && *pc <= '7') {
401 c = (c<<3)+(*pc++ - '0');
402 if (*pc >= '0' && *pc <= '7')
403 c = (c<<3)+(*pc++ - '0');
408 for (p = delims; *p != '\0'; ++p) {
421 *buf = '\0'; /* terminate copy of token */
423 *delimp = c; /* return delimiter */
424 *linep = pc-1; /* say where we ended */
429 /* Parse password timestamp
442 if (0 > parse_quote(valp, "| ,\n\r", delimp,
444 || buf[bufsize-1] != '\0'
445 || buf[bufsize-2] != '\0') {
446 sprintf(buf,"bad timestamp %.25s", val0);
450 memset(&tm, 0, sizeof(tm));
451 ptr = strptime(buf, "%y/%m/%d@%H:%M\n", &tm);
452 if (ptr == NULL || *ptr != '\0') {
453 sprintf(buf,"bad timestamp %.25s", val0);
457 if ((*tp = mktime(&tm)) == -1) {
458 sprintf(buf,"bad timestamp %.25s", val0);
466 /* Get a password, key ID, and expiration date in the format
467 * passwd|keyID|year/mon/day@hour:min|year/mon/day@hour:min
469 static const char * /* 0 or error message */
470 get_passwd(char *tgt,
474 int safe) /* 1=from secure file */
477 char *val0, *p, delim;
478 struct auth k, *ap, *ap2;
484 return "ignore unsafe password";
486 for (ap = parmp->parm_auth, i = 0;
487 ap->type != RIP_AUTH_NONE; i++, ap++) {
488 if (i >= MAX_AUTH_KEYS)
489 return "too many passwords";
492 memset(&k, 0, sizeof(k));
497 if (0 > parse_quote(&val, "| ,\n\r", &delim,
498 (char *)k.key, sizeof(k.key)))
502 if (type == RIP_AUTH_MD5)
503 return "missing Keyid";
506 buf[sizeof(buf)-1] = '\0';
507 if (0 > parse_quote(&val, "| ,\n\r", &delim, buf,sizeof(buf))
508 || buf[sizeof(buf)-1] != '\0'
509 || (l = strtoul(buf,&p,0)) > 255
511 sprintf(buf,"bad KeyID \"%.20s\"", val0);
514 for (ap2 = parmp->parm_auth; ap2 < ap; ap2++) {
515 if (ap2->keyid == l) {
516 sprintf(buf,"duplicate KeyID \"%.20s\"", val0);
524 if (NULL != (p = parse_ts(&k.start,&val,val0,&delim,
528 return "missing second timestamp";
530 if (NULL != (p = parse_ts(&k.end,&val,val0,&delim,
533 if ((u_long)k.start > (u_long)k.end) {
534 sprintf(buf,"out of order timestamp %.30s",
543 memmove(ap, &k, sizeof(*ap));
549 bad_str(const char *estr)
551 static char buf[100+8];
553 sprintf(buf, "bad \"%.100s\"", estr);
558 /* Parse a set of parameters for an interface.
560 const char * /* 0 or error message */
561 parse_parms(char *line,
562 int safe) /* 1=from secure file */
564 #define PARS(str) (!strcasecmp(tgt, str))
565 #define PARSEQ(str) (!strncasecmp(tgt, str"=", sizeof(str)))
566 #define CKF(g,b) {if (0 != (parm.parm_int_state & ((g) & ~(b)))) break; \
567 parm.parm_int_state |= (b);}
569 struct intnet *intnetp;
570 struct r1net *r1netp;
573 char delim, *val0 = NULL, *tgt, *val, *p;
575 char buf[BUFSIZ], buf2[BUFSIZ];
579 /* "subnet=x.y.z.u/mask[,metric]" must be alone on the line */
580 if (!strncasecmp(line, "subnet=", sizeof("subnet=")-1)
581 && *(val = &line[sizeof("subnet=")-1]) != '\0') {
582 if (0 > parse_quote(&val, ",", &delim, buf, sizeof(buf)))
583 return bad_str(line);
584 intnetp = (struct intnet*)rtmalloc(sizeof(*intnetp),
585 "parse_parms subnet");
586 intnetp->intnet_metric = 1;
588 intnetp->intnet_metric = (int)strtol(val+1,&p,0);
590 || intnetp->intnet_metric <= 0
591 || intnetp->intnet_metric >= HOPCNT_INFINITY) {
593 return bad_str(line);
596 if (!getnet(buf, &intnetp->intnet_addr, &intnetp->intnet_mask)
597 || intnetp->intnet_mask == HOST_MASK
598 || intnetp->intnet_addr == RIP_DEFAULT) {
600 return bad_str(line);
602 intnetp->intnet_addr = htonl(intnetp->intnet_addr);
603 intnetp->intnet_next = intnets;
608 /* "ripv1_mask=x.y.z.u/mask1,mask2" must be alone on the line.
609 * This requires that x.y.z.u/mask1 be considered a subnet of
610 * x.y.z.u/mask2, as if x.y.z.u/mask2 were a class-full network.
612 if (!strncasecmp(line, "ripv1_mask=", sizeof("ripv1_mask=")-1)
613 && *(val = &line[sizeof("ripv1_mask=")-1]) != '\0') {
614 if (0 > parse_quote(&val, ",", &delim, buf, sizeof(buf))
616 return bad_str(line);
617 if ((i = (int)strtol(val+1, &p, 0)) <= 0
618 || i > 32 || *p != '\0')
619 return bad_str(line);
620 r1netp = (struct r1net *)rtmalloc(sizeof(*r1netp),
621 "parse_parms ripv1_mask");
622 r1netp->r1net_mask = HOST_MASK << (32-i);
623 if (!getnet(buf, &r1netp->r1net_net, &r1netp->r1net_match)
624 || r1netp->r1net_net == RIP_DEFAULT
625 || r1netp->r1net_mask > r1netp->r1net_match) {
627 return bad_str(line);
629 r1netp->r1net_next = r1nets;
634 memset(&parm, 0, sizeof(parm));
637 tgt = line + strspn(line, " ,\n\r");
638 if (*tgt == '\0' || *tgt == '#')
640 line = tgt+strcspn(tgt, "= #,\n\r");
644 if (0 > parse_quote(&line, " #,\n\r",&delim,
657 || (delim = *line) != ' ')
663 if (parm.parm_name[0] != '\0'
664 || strlen(buf) > IF_NAME_LEN)
666 strcpy(parm.parm_name, buf);
668 } else if (PARSEQ("addr")) {
669 /* This is a bad idea, because the address based
670 * sets of parameters cannot be checked for
671 * consistency with the interface name parameters.
672 * The parm_net stuff is needed to allow several
675 if (val0 == NULL || !getnet(val0, &addr, &mask)
676 || parm.parm_name[0] != '\0')
678 parm.parm_net = addr;
679 parm.parm_mask = mask;
680 parm.parm_name[0] = '\n';
682 } else if (PARSEQ("passwd")) {
683 /* since cleartext passwords are so weak allow
687 return bad_str("no passwd");
688 msg = get_passwd(tgt,val0,&parm,RIP_AUTH_PW,1);
694 } else if (PARSEQ("md5_passwd")) {
695 msg = get_passwd(tgt,val0,&parm,RIP_AUTH_MD5,safe);
701 } else if (PARS("no_ag")) {
702 parm.parm_int_state |= (IS_NO_AG | IS_NO_SUPER_AG);
704 } else if (PARS("no_super_ag")) {
705 parm.parm_int_state |= IS_NO_SUPER_AG;
707 } else if (PARS("no_rip_out")) {
708 parm.parm_int_state |= IS_NO_RIP_OUT;
710 } else if (PARS("no_ripv1_in")) {
711 parm.parm_int_state |= IS_NO_RIPV1_IN;
713 } else if (PARS("no_ripv2_in")) {
714 parm.parm_int_state |= IS_NO_RIPV2_IN;
716 } else if (PARS("ripv2_out")) {
717 if (parm.parm_int_state & IS_NO_RIPV2_OUT)
719 parm.parm_int_state |= IS_NO_RIPV1_OUT;
721 } else if (PARS("ripv2")) {
722 if ((parm.parm_int_state & IS_NO_RIPV2_OUT)
723 || (parm.parm_int_state & IS_NO_RIPV2_IN))
725 parm.parm_int_state |= (IS_NO_RIPV1_IN
728 } else if (PARS("no_rip")) {
729 CKF(IS_PM_RDISC, IS_NO_RIP);
731 } else if (PARS("no_rip_mcast")) {
732 parm.parm_int_state |= IS_NO_RIP_MCAST;
734 } else if (PARS("no_rdisc")) {
735 CKF((GROUP_IS_SOL_OUT|GROUP_IS_ADV_OUT), IS_NO_RDISC);
737 } else if (PARS("no_solicit")) {
738 CKF(GROUP_IS_SOL_OUT, IS_NO_SOL_OUT);
740 } else if (PARS("send_solicit")) {
741 CKF(GROUP_IS_SOL_OUT, IS_SOL_OUT);
743 } else if (PARS("no_rdisc_adv")) {
744 CKF(GROUP_IS_ADV_OUT, IS_NO_ADV_OUT);
746 } else if (PARS("rdisc_adv")) {
747 CKF(GROUP_IS_ADV_OUT, IS_ADV_OUT);
749 } else if (PARS("bcast_rdisc")) {
750 parm.parm_int_state |= IS_BCAST_RDISC;
752 } else if (PARS("passive")) {
753 CKF((GROUP_IS_SOL_OUT|GROUP_IS_ADV_OUT), IS_NO_RDISC);
754 parm.parm_int_state |= IS_NO_RIP | IS_PASSIVE;
756 } else if (PARSEQ("rdisc_pref")) {
757 if (parm.parm_rdisc_pref != 0
758 || (parm.parm_rdisc_pref = (int)strtol(buf,&p,0),
762 } else if (PARS("pm_rdisc")) {
763 if (IS_RIP_OUT_OFF(parm.parm_int_state))
765 parm.parm_int_state |= IS_PM_RDISC;
767 } else if (PARSEQ("rdisc_interval")) {
768 if (parm.parm_rdisc_int != 0
769 || (parm.parm_rdisc_int = (int)strtoul(buf,&p,0),
771 || parm.parm_rdisc_int < MinMaxAdvertiseInterval
772 || parm.parm_rdisc_int > MaxMaxAdvertiseInterval)
775 } else if (PARSEQ("fake_default")) {
776 if (parm.parm_d_metric != 0
777 || IS_RIP_OUT_OFF(parm.parm_int_state)
778 || (i = strtoul(buf,&p,0), *p != '\0')
779 || i > HOPCNT_INFINITY-1)
781 parm.parm_d_metric = i;
783 } else if (PARSEQ("adj_inmetric")) {
784 if (parm.parm_adj_inmetric != 0
785 || (i = strtoul(buf,&p,0), *p != '\0')
786 || i > HOPCNT_INFINITY-1)
788 parm.parm_adj_inmetric = i;
790 } else if (PARSEQ("adj_outmetric")) {
791 if (parm.parm_adj_outmetric != 0
792 || (i = strtoul(buf,&p,0), *p != '\0')
793 || i > HOPCNT_INFINITY-1)
795 parm.parm_adj_outmetric = i;
797 } else if (PARSEQ("trust_gateway")) {
798 /* look for trust_gateway=x.y.z|net/mask|...) */
800 if (0 > parse_quote(&p, "|", &delim,
802 || !gethost(buf2,&addr))
804 tg = (struct tgate *)rtmalloc(sizeof(*tg),
807 memset(tg, 0, sizeof(*tg));
808 tg->tgate_addr = addr;
810 /* The default is to trust all routes. */
811 while (delim == '|') {
813 if (i >= MAX_TGATE_NETS
814 || 0 > parse_quote(&p, "|", &delim,
816 || !getnet(buf2, &tg->tgate_nets[i].net,
817 &tg->tgate_nets[i].mask)
818 || tg->tgate_nets[i].net == RIP_DEFAULT
819 || tg->tgate_nets[i].mask == 0) {
825 tg->tgate_next = tgates;
827 parm.parm_int_state |= IS_DISTRUST;
829 } else if (PARS("redirect_ok")) {
830 parm.parm_int_state |= IS_REDIRECT_OK;
833 return bad_str(tgt); /* error */
837 return check_parms(&parm);
843 /* check for duplicate parameter specifications */
844 const char * /* 0 or error message */
845 check_parms(struct parm *new)
847 struct parm *parmp, **parmpp;
850 /* set implicit values
852 if (new->parm_int_state & IS_NO_ADV_IN)
853 new->parm_int_state |= IS_NO_SOL_OUT;
854 if (new->parm_int_state & IS_NO_SOL_OUT)
855 new->parm_int_state |= IS_NO_ADV_IN;
857 for (i = num_passwds = 0; i < MAX_AUTH_KEYS; i++) {
858 if (new->parm_auth[i].type != RIP_AUTH_NONE)
862 /* compare with existing sets of parameters
864 for (parmpp = &parms;
865 (parmp = *parmpp) != NULL;
866 parmpp = &parmp->parm_next) {
867 if (strcmp(new->parm_name, parmp->parm_name))
869 if (!on_net(htonl(parmp->parm_net),
870 new->parm_net, new->parm_mask)
871 && !on_net(htonl(new->parm_net),
872 parmp->parm_net, parmp->parm_mask))
875 for (i = 0; i < MAX_AUTH_KEYS; i++) {
876 if (parmp->parm_auth[i].type != RIP_AUTH_NONE)
879 if (num_passwds > MAX_AUTH_KEYS)
880 return "too many conflicting passwords";
882 if ((0 != (new->parm_int_state & GROUP_IS_SOL_OUT)
883 && 0 != (parmp->parm_int_state & GROUP_IS_SOL_OUT)
884 && 0 != ((new->parm_int_state ^ parmp->parm_int_state)
886 || (0 != (new->parm_int_state & GROUP_IS_ADV_OUT)
887 && 0 != (parmp->parm_int_state & GROUP_IS_ADV_OUT)
888 && 0 != ((new->parm_int_state ^ parmp->parm_int_state)
890 || (new->parm_rdisc_pref != 0
891 && parmp->parm_rdisc_pref != 0
892 && new->parm_rdisc_pref != parmp->parm_rdisc_pref)
893 || (new->parm_rdisc_int != 0
894 && parmp->parm_rdisc_int != 0
895 && new->parm_rdisc_int != parmp->parm_rdisc_int)) {
896 return ("conflicting, duplicate router discovery"
901 if (new->parm_d_metric != 0
902 && parmp->parm_d_metric != 0
903 && new->parm_d_metric != parmp->parm_d_metric) {
904 return ("conflicting, duplicate poor man's router"
905 " discovery or fake default metric");
908 if (new->parm_adj_inmetric != 0
909 && parmp->parm_adj_inmetric != 0
910 && new->parm_adj_inmetric != parmp->parm_adj_inmetric) {
911 return ("conflicting interface input "
912 "metric adjustments");
915 if (new->parm_adj_outmetric != 0
916 && parmp->parm_adj_outmetric != 0
917 && new->parm_adj_outmetric != parmp->parm_adj_outmetric) {
918 return ("conflicting interface output "
919 "metric adjustments");
923 /* link new entry on the list so that when the entries are scanned,
924 * they affect the result in the order the operator specified.
926 parmp = (struct parm*)rtmalloc(sizeof(*parmp), "check_parms");
927 memcpy(parmp, new, sizeof(*parmp));
934 /* get a network number as a name or a number, with an optional "/xx"
939 naddr *netp, /* network in host byte order */
940 naddr *maskp) /* masks are always in host order */
944 naddr mask; /* in host byte order */
945 struct in_addr in; /* a network and so host byte order */
946 char hname[MAXHOSTNAMELEN+1];
950 /* Detect and separate "1.2.3.4/24"
952 if (NULL != (mname = strrchr(name,'/'))) {
953 i = (int)(mname - name);
954 if (i > (int)sizeof(hname)-1) /* name too long */
956 memmove(hname, name, i);
962 np = getnetbyname(name);
964 in.s_addr = (naddr)np->n_net;
965 if (0 == (in.s_addr & 0xff000000))
967 if (0 == (in.s_addr & 0xff000000))
969 if (0 == (in.s_addr & 0xff000000))
971 } else if (inet_aton(name, &in) == 1) {
972 in.s_addr = ntohl(in.s_addr);
973 } else if (!mname && !strcasecmp(name,"default")) {
974 in.s_addr = RIP_DEFAULT;
980 /* we cannot use the interfaces here because we have not
981 * looked at them yet.
983 mask = std_mask(htonl(in.s_addr));
984 if ((~mask & in.s_addr) != 0)
987 mask = (naddr)strtoul(mname, &p, 0);
988 if (*p != '\0' || mask > 32)
991 mask = HOST_MASK << (32-mask);
994 /* must have mask of 0 with default */
995 if (mask != 0 && in.s_addr == RIP_DEFAULT)
997 /* no host bits allowed in a network number */
998 if ((~mask & in.s_addr) != 0)
1000 /* require non-zero network number */
1001 if ((mask & in.s_addr) == 0 && in.s_addr != RIP_DEFAULT)
1003 if (in.s_addr>>24 == 0 && in.s_addr != RIP_DEFAULT)
1005 if (in.s_addr>>24 == 0xff)
1022 /* Try for a number first, even in IRIX where gethostbyname()
1023 * is smart. This avoids hitting the name server which
1024 * might be sick because routing is.
1026 if (inet_aton(name, &in) == 1) {
1027 /* get a good number, but check that it it makes some
1030 if (ntohl(in.s_addr)>>24 == 0
1031 || ntohl(in.s_addr)>>24 == 0xff)
1037 hp = gethostbyname(name);
1039 memcpy(addrp, hp->h_addr, sizeof(*addrp));