Commit | Line | Data |
---|---|---|
5ff67f98 | 1 | /* |
84ddc1c0 | 2 | * Copyright (c) 1983, 1988 Regents of the University of California. |
0eb85d71 KB |
3 | * All rights reserved. |
4 | * | |
d60d530a | 5 | * %sccs.include.redist.c% |
5ff67f98 DF |
6 | */ |
7 | ||
85d8a62e | 8 | #ifndef lint |
e8b60864 | 9 | static char sccsid[] = "@(#)startup.c 5.21 (Berkeley) %G%"; |
0eb85d71 | 10 | #endif /* not lint */ |
85d8a62e SL |
11 | |
12 | /* | |
13 | * Routing Table Management Daemon | |
14 | */ | |
7fe7fe74 | 15 | #include "defs.h" |
ad34083f | 16 | #include <sys/ioctl.h> |
ad76aa05 | 17 | #include <sys/kinfo.h> |
85d8a62e | 18 | #include <net/if.h> |
ad76aa05 | 19 | #include <net/if_dl.h> |
69b7ef61 | 20 | #include <syslog.h> |
49dac2b7 | 21 | #include <stdlib.h> |
aed09772 | 22 | #include "pathnames.h" |
85d8a62e SL |
23 | |
24 | struct interface *ifnet; | |
4033c8f6 | 25 | struct interface **ifnext = &ifnet; |
85d8a62e | 26 | int lookforinterfaces = 1; |
85d8a62e | 27 | int externalinterfaces = 0; /* # of remote and local interfaces */ |
7892134c MK |
28 | int foundloopback; /* valid flag for loopaddr */ |
29 | struct sockaddr loopaddr; /* our address on loopback */ | |
85d8a62e | 30 | |
ad76aa05 KS |
31 | |
32 | void | |
33 | quit(s) | |
34 | char *s; | |
35 | { | |
36 | extern int errno; | |
37 | int sverrno = errno; | |
38 | ||
39 | (void) fprintf(stderr, "route: "); | |
40 | if (s) | |
41 | (void) fprintf(stderr, "%s: ", s); | |
42 | (void) fprintf(stderr, "%s\n", strerror(sverrno)); | |
43 | exit(1); | |
44 | /* NOTREACHED */ | |
45 | } | |
46 | ||
47 | struct rt_addrinfo info; | |
48 | /* Sleazy use of local variables throughout file, warning!!!! */ | |
49 | #define netmask info.rti_info[RTAX_NETMASK] | |
50 | #define ifaaddr info.rti_info[RTAX_IFA] | |
51 | #define brdaddr info.rti_info[RTAX_BRD] | |
52 | ||
53 | #define ROUNDUP(a) \ | |
54 | ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) | |
55 | #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) | |
56 | ||
57 | void | |
58 | rt_xaddrs(cp, cplim, rtinfo) | |
59 | register caddr_t cp, cplim; | |
60 | register struct rt_addrinfo *rtinfo; | |
61 | { | |
62 | register struct sockaddr *sa; | |
63 | register int i; | |
64 | ||
65 | bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info)); | |
66 | for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) { | |
67 | if ((rtinfo->rti_addrs & (1 << i)) == 0) | |
68 | continue; | |
69 | rtinfo->rti_info[i] = sa = (struct sockaddr *)cp; | |
70 | ADVANCE(cp, sa); | |
71 | } | |
72 | } | |
73 | ||
85d8a62e | 74 | /* |
04667a08 MK |
75 | * Find the network interfaces which have configured themselves. |
76 | * If the interface is present but not yet up (for example an | |
85d8a62e SL |
77 | * ARPANET IMP), set the lookforinterfaces flag so we'll |
78 | * come back later and look again. | |
79 | */ | |
80 | ifinit() | |
81 | { | |
04667a08 | 82 | struct interface ifs, *ifp; |
ad76aa05 KS |
83 | int needed, rlen, no_ipaddr = 0, flags = 0; |
84 | char *buf, *cplim, *cp; | |
85 | register struct if_msghdr *ifm; | |
86 | register struct ifa_msghdr *ifam; | |
87 | struct sockaddr_dl *sdl; | |
04667a08 MK |
88 | struct sockaddr_in *sin; |
89 | u_long i; | |
85d8a62e | 90 | |
ad76aa05 KS |
91 | if ((needed = getkerninfo(KINFO_RT_IFLIST, 0, 0, 0)) < 0) |
92 | quit("route-getkerninfo-estimate"); | |
93 | if ((buf = malloc(needed)) == NULL) | |
94 | quit("malloc"); | |
95 | if ((rlen = getkerninfo(KINFO_RT_IFLIST, buf, &needed, 0)) < 0) | |
96 | quit("actual retrieval of interface table"); | |
85d8a62e | 97 | lookforinterfaces = 0; |
ad76aa05 KS |
98 | cplim = buf + rlen; |
99 | for (cp = buf; cp < cplim; cp += ifm->ifm_msglen) { | |
100 | ifm = (struct if_msghdr *)cp; | |
101 | if (ifm->ifm_type == RTM_IFINFO) { | |
102 | bzero(&ifs, sizeof(ifs)); | |
103 | ifs.int_flags = flags = ifm->ifm_flags | IFF_INTERFACE; | |
104 | if ((flags & IFF_UP) == 0 || no_ipaddr) | |
105 | lookforinterfaces = 1; | |
106 | sdl = (struct sockaddr_dl *) (ifm + 1); | |
107 | sdl->sdl_data[sdl->sdl_nlen] = 0; | |
ad76aa05 KS |
108 | no_ipaddr = 1; |
109 | continue; | |
110 | } | |
111 | if (ifm->ifm_type != RTM_NEWADDR) | |
112 | quit("ifinit: out of sync"); | |
113 | if ((flags & IFF_UP) == 0) | |
114 | continue; | |
115 | ifam = (struct ifa_msghdr *)ifm; | |
116 | info.rti_addrs = ifam->ifam_addrs; | |
117 | rt_xaddrs((char *)(ifam + 1), cp + ifam->ifam_msglen, &info); | |
118 | if (ifaaddr == 0) { | |
119 | syslog(LOG_ERR, "%s: (get addr)", sdl->sdl_data); | |
85d8a62e SL |
120 | continue; |
121 | } | |
ad76aa05 | 122 | ifs.int_addr = *ifaaddr; |
4033c8f6 MK |
123 | if (ifs.int_addr.sa_family != AF_INET) |
124 | continue; | |
ad76aa05 KS |
125 | no_ipaddr = 0; |
126 | if (ifs.int_flags & IFF_POINTOPOINT) { | |
127 | if (brdaddr == 0) { | |
128 | syslog(LOG_ERR, "%s: (get dstaddr)", | |
129 | sdl->sdl_data); | |
130 | continue; | |
4033c8f6 | 131 | } |
ad76aa05 | 132 | if (brdaddr->sa_family == AF_UNSPEC) { |
4033c8f6 MK |
133 | lookforinterfaces = 1; |
134 | continue; | |
135 | } | |
ad76aa05 | 136 | ifs.int_dstaddr = *brdaddr; |
4033c8f6 | 137 | } |
84ddc1c0 MK |
138 | /* |
139 | * already known to us? | |
140 | * This allows multiple point-to-point links | |
141 | * to share a source address (possibly with one | |
142 | * other link), but assumes that there will not be | |
143 | * multiple links with the same destination address. | |
144 | */ | |
145 | if (ifs.int_flags & IFF_POINTOPOINT) { | |
146 | if (if_ifwithdstaddr(&ifs.int_dstaddr)) | |
147 | continue; | |
148 | } else if (if_ifwithaddr(&ifs.int_addr)) | |
85d8a62e | 149 | continue; |
7892134c | 150 | if (ifs.int_flags & IFF_LOOPBACK) { |
84ddc1c0 | 151 | ifs.int_flags |= IFF_PASSIVE; |
7892134c MK |
152 | foundloopback = 1; |
153 | loopaddr = ifs.int_addr; | |
154 | for (ifp = ifnet; ifp; ifp = ifp->int_next) | |
155 | if (ifp->int_flags & IFF_POINTOPOINT) | |
156 | add_ptopt_localrt(ifp); | |
157 | } | |
ad76aa05 KS |
158 | if (ifs.int_flags & IFF_BROADCAST) { |
159 | if (brdaddr == 0) { | |
160 | syslog(LOG_ERR, "%s: (get broadaddr)", | |
161 | sdl->sdl_data); | |
162 | continue; | |
163 | } | |
164 | ifs.int_dstaddr = *brdaddr; | |
04667a08 | 165 | } |
e8b60864 KS |
166 | /* |
167 | * Use a minimum metric of one; | |
168 | * treat the interface metric (default 0) | |
169 | * as an increment to the hop count of one. | |
170 | */ | |
171 | ifs.int_metric = ifam->ifam_metric + 1; | |
ad76aa05 KS |
172 | if (netmask == 0) { |
173 | syslog(LOG_ERR, "%s: (get netmask)", | |
174 | sdl->sdl_data); | |
175 | continue; | |
04667a08 | 176 | } |
ad76aa05 | 177 | sin = (struct sockaddr_in *)netmask; |
04667a08 MK |
178 | ifs.int_subnetmask = ntohl(sin->sin_addr.s_addr); |
179 | sin = (struct sockaddr_in *)&ifs.int_addr; | |
180 | i = ntohl(sin->sin_addr.s_addr); | |
181 | if (IN_CLASSA(i)) | |
182 | ifs.int_netmask = IN_CLASSA_NET; | |
183 | else if (IN_CLASSB(i)) | |
184 | ifs.int_netmask = IN_CLASSB_NET; | |
185 | else | |
186 | ifs.int_netmask = IN_CLASSC_NET; | |
187 | ifs.int_net = i & ifs.int_netmask; | |
188 | ifs.int_subnet = i & ifs.int_subnetmask; | |
4fad5a6e MK |
189 | if (ifs.int_subnetmask != ifs.int_netmask) |
190 | ifs.int_flags |= IFF_SUBNET; | |
ad76aa05 KS |
191 | ifp = (struct interface *) |
192 | malloc(sdl->sdl_nlen + 1 + sizeof(ifs)); | |
85d8a62e SL |
193 | if (ifp == 0) { |
194 | printf("routed: out of memory\n"); | |
ad76aa05 | 195 | lookforinterfaces = 1; |
85d8a62e SL |
196 | break; |
197 | } | |
04667a08 | 198 | *ifp = ifs; |
85d8a62e SL |
199 | /* |
200 | * Count the # of directly connected networks | |
201 | * and point to point links which aren't looped | |
202 | * back to ourself. This is used below to | |
203 | * decide if we should be a routing ``supplier''. | |
204 | */ | |
7892134c MK |
205 | if ((ifs.int_flags & IFF_LOOPBACK) == 0 && |
206 | ((ifs.int_flags & IFF_POINTOPOINT) == 0 || | |
207 | if_ifwithaddr(&ifs.int_dstaddr) == 0)) | |
85d8a62e | 208 | externalinterfaces++; |
4ff053a6 MK |
209 | /* |
210 | * If we have a point-to-point link, we want to act | |
211 | * as a supplier even if it's our only interface, | |
212 | * as that's the only way our peer on the other end | |
213 | * can tell that the link is up. | |
214 | */ | |
215 | if ((ifs.int_flags & IFF_POINTOPOINT) && supplier < 0) | |
216 | supplier = 1; | |
ad76aa05 KS |
217 | ifp->int_name = (char *)(ifp + 1); |
218 | strcpy(ifp->int_name, sdl->sdl_data); | |
4033c8f6 MK |
219 | *ifnext = ifp; |
220 | ifnext = &ifp->int_next; | |
85d8a62e SL |
221 | traceinit(ifp); |
222 | addrouteforif(ifp); | |
223 | } | |
224 | if (externalinterfaces > 1 && supplier < 0) | |
225 | supplier = 1; | |
ad76aa05 | 226 | free(buf); |
85d8a62e SL |
227 | } |
228 | ||
4fad5a6e MK |
229 | /* |
230 | * Add route for interface if not currently installed. | |
231 | * Create route to other end if a point-to-point link, | |
232 | * otherwise a route to this (sub)network. | |
233 | * INTERNET SPECIFIC. | |
234 | */ | |
85d8a62e | 235 | addrouteforif(ifp) |
7892134c | 236 | register struct interface *ifp; |
85d8a62e SL |
237 | { |
238 | struct sockaddr_in net; | |
239 | struct sockaddr *dst; | |
09b9aef2 | 240 | int state; |
7892134c | 241 | register struct rt_entry *rt; |
85d8a62e SL |
242 | |
243 | if (ifp->int_flags & IFF_POINTOPOINT) | |
244 | dst = &ifp->int_dstaddr; | |
245 | else { | |
246 | bzero((char *)&net, sizeof (net)); | |
247 | net.sin_family = AF_INET; | |
04667a08 | 248 | net.sin_addr = inet_makeaddr(ifp->int_subnet, INADDR_ANY); |
85d8a62e SL |
249 | dst = (struct sockaddr *)&net; |
250 | } | |
04667a08 | 251 | rt = rtfind(dst); |
34df5e5d MK |
252 | if (rt && |
253 | (rt->rt_state & (RTS_INTERFACE | RTS_INTERNAL)) == RTS_INTERFACE) | |
a7c33470 | 254 | return; |
85d8a62e SL |
255 | if (rt) |
256 | rtdelete(rt); | |
4fad5a6e MK |
257 | /* |
258 | * If interface on subnetted network, | |
259 | * install route to network as well. | |
260 | * This is meant for external viewers. | |
261 | */ | |
262 | if ((ifp->int_flags & (IFF_SUBNET|IFF_POINTOPOINT)) == IFF_SUBNET) { | |
7892134c MK |
263 | struct in_addr subnet; |
264 | ||
265 | subnet = net.sin_addr; | |
4fad5a6e MK |
266 | net.sin_addr = inet_makeaddr(ifp->int_net, INADDR_ANY); |
267 | rt = rtfind(dst); | |
34df5e5d MK |
268 | if (rt == 0) |
269 | rtadd(dst, &ifp->int_addr, ifp->int_metric, | |
270 | ((ifp->int_flags & (IFF_INTERFACE|IFF_REMOTE)) | | |
7892134c MK |
271 | RTS_PASSIVE | RTS_INTERNAL | RTS_SUBNET)); |
272 | else if ((rt->rt_state & (RTS_INTERNAL|RTS_SUBNET)) == | |
273 | (RTS_INTERNAL|RTS_SUBNET) && | |
274 | ifp->int_metric < rt->rt_metric) | |
275 | rtchange(rt, &rt->rt_router, ifp->int_metric); | |
276 | net.sin_addr = subnet; | |
4fad5a6e | 277 | } |
34df5e5d MK |
278 | if (ifp->int_transitions++ > 0) |
279 | syslog(LOG_ERR, "re-installing interface %s", ifp->int_name); | |
7892134c MK |
280 | state = ifp->int_flags & |
281 | (IFF_INTERFACE | IFF_PASSIVE | IFF_REMOTE | IFF_SUBNET); | |
282 | if (ifp->int_flags & IFF_POINTOPOINT && | |
283 | (ntohl(((struct sockaddr_in *)&ifp->int_dstaddr)->sin_addr.s_addr) & | |
284 | ifp->int_netmask) != ifp->int_net) | |
285 | state &= ~RTS_SUBNET; | |
286 | if (ifp->int_flags & IFF_LOOPBACK) | |
84ddc1c0 | 287 | state |= RTS_EXTERNAL; |
7892134c MK |
288 | rtadd(dst, &ifp->int_addr, ifp->int_metric, state); |
289 | if (ifp->int_flags & IFF_POINTOPOINT && foundloopback) | |
290 | add_ptopt_localrt(ifp); | |
291 | } | |
34df5e5d | 292 | |
7892134c MK |
293 | /* |
294 | * Add route to local end of point-to-point using loopback. | |
295 | * If a route to this network is being sent to neighbors on other nets, | |
296 | * mark this route as subnet so we don't have to propagate it too. | |
297 | */ | |
298 | add_ptopt_localrt(ifp) | |
299 | register struct interface *ifp; | |
300 | { | |
301 | struct rt_entry *rt; | |
302 | struct sockaddr *dst; | |
303 | struct sockaddr_in net; | |
304 | int state; | |
305 | ||
306 | state = RTS_INTERFACE | RTS_PASSIVE; | |
307 | ||
308 | /* look for route to logical network */ | |
309 | bzero((char *)&net, sizeof (net)); | |
310 | net.sin_family = AF_INET; | |
311 | net.sin_addr = inet_makeaddr(ifp->int_net, INADDR_ANY); | |
312 | dst = (struct sockaddr *)&net; | |
313 | rt = rtfind(dst); | |
314 | if (rt && rt->rt_state & RTS_INTERNAL) | |
315 | state |= RTS_SUBNET; | |
316 | ||
317 | dst = &ifp->int_addr; | |
318 | if (rt = rtfind(dst)) { | |
319 | if (rt && rt->rt_state & RTS_INTERFACE) | |
320 | return; | |
321 | rtdelete(rt); | |
322 | } | |
09b9aef2 | 323 | rtadd(dst, &loopaddr, 1, state); |
85d8a62e SL |
324 | } |
325 | ||
326 | /* | |
327 | * As a concession to the ARPANET we read a list of gateways | |
328 | * from /etc/gateways and add them to our tables. This file | |
329 | * exists at each ARPANET gateway and indicates a set of ``remote'' | |
330 | * gateways (i.e. a gateway which we can't immediately determine | |
331 | * if it's present or not as we can do for those directly connected | |
332 | * at the hardware level). If a gateway is marked ``passive'' | |
333 | * in the file, then we assume it doesn't have a routing process | |
334 | * of our design and simply assume it's always present. Those | |
335 | * not marked passive are treated as if they were directly | |
336 | * connected -- they're added into the interface list so we'll | |
337 | * send them routing updates. | |
7892134c MK |
338 | * |
339 | * PASSIVE ENTRIES AREN'T NEEDED OR USED ON GATEWAYS RUNNING EGP. | |
85d8a62e SL |
340 | */ |
341 | gwkludge() | |
342 | { | |
343 | struct sockaddr_in dst, gate; | |
344 | FILE *fp; | |
345 | char *type, *dname, *gname, *qual, buf[BUFSIZ]; | |
346 | struct interface *ifp; | |
09069ad0 | 347 | int metric, n; |
ad34083f | 348 | struct rt_entry route; |
85d8a62e | 349 | |
aed09772 | 350 | fp = fopen(_PATH_GATEWAYS, "r"); |
85d8a62e SL |
351 | if (fp == NULL) |
352 | return; | |
353 | qual = buf; | |
354 | dname = buf + 64; | |
355 | gname = buf + ((BUFSIZ - 64) / 3); | |
356 | type = buf + (((BUFSIZ - 64) * 2) / 3); | |
357 | bzero((char *)&dst, sizeof (dst)); | |
358 | bzero((char *)&gate, sizeof (gate)); | |
ad34083f | 359 | bzero((char *)&route, sizeof(route)); |
88709531 | 360 | /* format: {net | host} XX gateway XX metric DD [passive | external]\n */ |
85d8a62e SL |
361 | #define readentry(fp) \ |
362 | fscanf((fp), "%s %s gateway %s metric %d %s\n", \ | |
363 | type, dname, gname, &metric, qual) | |
364 | for (;;) { | |
09069ad0 | 365 | if ((n = readentry(fp)) == EOF) |
85d8a62e | 366 | break; |
7fe7fe74 | 367 | if (!getnetorhostname(type, dname, &dst)) |
85d8a62e | 368 | continue; |
7fe7fe74 | 369 | if (!gethostnameornumber(gname, &gate)) |
85d8a62e | 370 | continue; |
09b9aef2 MK |
371 | if (metric == 0) /* XXX */ |
372 | metric = 1; | |
ad34083f MK |
373 | if (strcmp(qual, "passive") == 0) { |
374 | /* | |
375 | * Passive entries aren't placed in our tables, | |
376 | * only the kernel's, so we don't copy all of the | |
377 | * external routing information within a net. | |
378 | * Internal machines should use the default | |
379 | * route to a suitable gateway (like us). | |
380 | */ | |
381 | route.rt_dst = *(struct sockaddr *) &dst; | |
382 | route.rt_router = *(struct sockaddr *) &gate; | |
383 | route.rt_flags = RTF_UP; | |
384 | if (strcmp(type, "host") == 0) | |
385 | route.rt_flags |= RTF_HOST; | |
386 | if (metric) | |
387 | route.rt_flags |= RTF_GATEWAY; | |
ad76aa05 | 388 | (void) rtioctl(ADD, &route.rt_rt); |
ad34083f MK |
389 | continue; |
390 | } | |
4fad5a6e MK |
391 | if (strcmp(qual, "external") == 0) { |
392 | /* | |
393 | * Entries marked external are handled | |
394 | * by other means, e.g. EGP, | |
395 | * and are placed in our tables only | |
396 | * to prevent overriding them | |
397 | * with something else. | |
398 | */ | |
399 | rtadd(&dst, &gate, metric, RTS_EXTERNAL|RTS_PASSIVE); | |
09069ad0 | 400 | continue; |
4fad5a6e | 401 | } |
ad34083f MK |
402 | /* assume no duplicate entries */ |
403 | externalinterfaces++; | |
85d8a62e SL |
404 | ifp = (struct interface *)malloc(sizeof (*ifp)); |
405 | bzero((char *)ifp, sizeof (*ifp)); | |
406 | ifp->int_flags = IFF_REMOTE; | |
407 | /* can't identify broadcast capability */ | |
408 | ifp->int_net = inet_netof(dst.sin_addr); | |
409 | if (strcmp(type, "host") == 0) { | |
410 | ifp->int_flags |= IFF_POINTOPOINT; | |
411 | ifp->int_dstaddr = *((struct sockaddr *)&dst); | |
412 | } | |
85d8a62e SL |
413 | ifp->int_addr = *((struct sockaddr *)&gate); |
414 | ifp->int_metric = metric; | |
415 | ifp->int_next = ifnet; | |
416 | ifnet = ifp; | |
417 | addrouteforif(ifp); | |
418 | } | |
419 | fclose(fp); | |
420 | } | |
7fe7fe74 SL |
421 | |
422 | getnetorhostname(type, name, sin) | |
423 | char *type, *name; | |
424 | struct sockaddr_in *sin; | |
425 | { | |
426 | ||
427 | if (strcmp(type, "net") == 0) { | |
428 | struct netent *np = getnetbyname(name); | |
429 | int n; | |
430 | ||
7fe7fe74 SL |
431 | if (np == 0) |
432 | n = inet_network(name); | |
20932249 SL |
433 | else { |
434 | if (np->n_addrtype != AF_INET) | |
435 | return (0); | |
7fe7fe74 | 436 | n = np->n_net; |
04667a08 MK |
437 | /* |
438 | * getnetbyname returns right-adjusted value. | |
439 | */ | |
440 | if (n < 128) | |
441 | n <<= IN_CLASSA_NSHIFT; | |
442 | else if (n < 65536) | |
443 | n <<= IN_CLASSB_NSHIFT; | |
444 | else | |
445 | n <<= IN_CLASSC_NSHIFT; | |
20932249 | 446 | } |
7fe7fe74 SL |
447 | sin->sin_family = AF_INET; |
448 | sin->sin_addr = inet_makeaddr(n, INADDR_ANY); | |
449 | return (1); | |
450 | } | |
451 | if (strcmp(type, "host") == 0) { | |
452 | struct hostent *hp = gethostbyname(name); | |
453 | ||
7fe7fe74 SL |
454 | if (hp == 0) |
455 | sin->sin_addr.s_addr = inet_addr(name); | |
20932249 SL |
456 | else { |
457 | if (hp->h_addrtype != AF_INET) | |
458 | return (0); | |
7fe7fe74 | 459 | bcopy(hp->h_addr, &sin->sin_addr, hp->h_length); |
20932249 | 460 | } |
7fe7fe74 SL |
461 | sin->sin_family = AF_INET; |
462 | return (1); | |
463 | } | |
464 | return (0); | |
465 | } | |
466 | ||
467 | gethostnameornumber(name, sin) | |
468 | char *name; | |
469 | struct sockaddr_in *sin; | |
470 | { | |
471 | struct hostent *hp; | |
472 | ||
473 | hp = gethostbyname(name); | |
474 | if (hp) { | |
475 | bcopy(hp->h_addr, &sin->sin_addr, hp->h_length); | |
476 | sin->sin_family = hp->h_addrtype; | |
477 | return (1); | |
478 | } | |
479 | sin->sin_addr.s_addr = inet_addr(name); | |
480 | sin->sin_family = AF_INET; | |
481 | return (sin->sin_addr.s_addr != -1); | |
482 | } |