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wire.c (42629) wire.c (51292)
1/*
1/*
2 * Copyright (c) 1997-1998 Erez Zadok
2 * Copyright (c) 1997-1999 Erez Zadok
3 * Copyright (c) 1990 Jan-Simon Pendry
4 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *

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33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * %W% (Berkeley) %G%
40 *
3 * Copyright (c) 1990 Jan-Simon Pendry
4 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *

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33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * %W% (Berkeley) %G%
40 *
41 * $Id: wire.c,v 1.1.1.1 1998/11/05 02:04:45 ezk Exp $
41 * $Id: wire.c,v 1.5 1999/09/08 23:36:52 ezk Exp $
42 *
43 */
44
45/*
46 * This function returns the subnet (address&netmask) for the primary network
47 * interface. If the resulting address has an entry in the hosts file, the
48 * corresponding name is returned, otherwise the address is returned in
49 * standard internet format.

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56
57#ifdef HAVE_CONFIG_H
58# include <config.h>
59#endif /* HAVE_CONFIG_H */
60#include <am_defs.h>
61#include <amu.h>
62
63
42 *
43 */
44
45/*
46 * This function returns the subnet (address&netmask) for the primary network
47 * interface. If the resulting address has an entry in the hosts file, the
48 * corresponding name is returned, otherwise the address is returned in
49 * standard internet format.

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56
57#ifdef HAVE_CONFIG_H
58# include <config.h>
59#endif /* HAVE_CONFIG_H */
60#include <am_defs.h>
61#include <amu.h>
62
63
64#ifdef HAVE_IFADDRS_H
65#include <ifaddrs.h>
66#endif /* HAVE_IFADDRS_H */
67
68#ifdef HAVE_IRS_H
69# include <irs.h>
70#endif /* HAVE_IRS_H */
71
64/*
65 * List of locally connected networks
66 */
67typedef struct addrlist addrlist;
68struct addrlist {
69 addrlist *ip_next;
70 u_long ip_addr; /* address of network */
71 u_long ip_mask;
72 char *ip_net_num; /* number of network */
73 char *ip_net_name; /* name of network */
74};
75static addrlist *localnets = NULL;
76
77#if defined(IFF_LOCAL_LOOPBACK) && !defined(IFF_LOOPBACK)
78# define IFF_LOOPBACK IFF_LOCAL_LOOPBACK
79#endif /* defined(IFF_LOCAL_LOOPBACK) && !defined(IFF_LOOPBACK) */
80
72/*
73 * List of locally connected networks
74 */
75typedef struct addrlist addrlist;
76struct addrlist {
77 addrlist *ip_next;
78 u_long ip_addr; /* address of network */
79 u_long ip_mask;
80 char *ip_net_num; /* number of network */
81 char *ip_net_name; /* name of network */
82};
83static addrlist *localnets = NULL;
84
85#if defined(IFF_LOCAL_LOOPBACK) && !defined(IFF_LOOPBACK)
86# define IFF_LOOPBACK IFF_LOCAL_LOOPBACK
87#endif /* defined(IFF_LOCAL_LOOPBACK) && !defined(IFF_LOOPBACK) */
88
81#if defined(HAVE_FIELD_STRUCT_IFREQ_IFR_ADDR) && defined(HAVE_FIELD_STRUCT_SOCKADDR_SA_LEN)
82# define SIZE(ifr) (MAX((ifr)->ifr_addr.sa_len, sizeof((ifr)->ifr_addr)) + sizeof(ifr->ifr_name))
83#else /* not defined(HAVE_FIELD_STRUCT_IFREQ_IFR_ADDR) && defined(HAVE_FIELD_STRUCT_SOCKADDR_SA_LEN) */
84# define SIZE(ifr) sizeof(struct ifreq)
85#endif /* not defined(HAVE_FIELD_STRUCT_IFREQ_IFR_ADDR) && defined(HAVE_FIELD_STRUCT_SOCKADDR_SA_LEN) */
86
87#define C(x) ((x) & 0xff)
88#define GFBUFLEN 1024
89#define C(x) ((x) & 0xff)
90#define GFBUFLEN 1024
89#define clist (ifc.ifc_ifcu.ifcu_req)
90#define count (ifc.ifc_len/sizeof(struct ifreq))
91#define S2IN(s) (((struct sockaddr_in *)(s))->sin_addr.s_addr)
91
92
93/* return malloc'ed buffer. caller must free it */
94char *
95print_wires(void)
96{
97 addrlist *al;
98 char s[256];
99 int i;
100 char *buf;
101 int bufcount = 0;
102 int buf_size = 1024;
103
92
93
94/* return malloc'ed buffer. caller must free it */
95char *
96print_wires(void)
97{
98 addrlist *al;
99 char s[256];
100 int i;
101 char *buf;
102 int bufcount = 0;
103 int buf_size = 1024;
104
104 buf = malloc(1024);
105 buf = SALLOC(1024);
105 if (!buf)
106 return NULL;
107
108 if (!localnets) {
109 sprintf(buf, "No networks.\n");
110 return buf;
111 }
112 /* check if there's more than one network */

--- 13 unchanged lines hidden (view full) ---

126 buf = xrealloc(buf, buf_size);
127 }
128 strcat(buf, s);
129 }
130 return buf;
131}
132
133
106 if (!buf)
107 return NULL;
108
109 if (!localnets) {
110 sprintf(buf, "No networks.\n");
111 return buf;
112 }
113 /* check if there's more than one network */

--- 13 unchanged lines hidden (view full) ---

127 buf = xrealloc(buf, buf_size);
128 }
129 strcat(buf, s);
130 }
131 return buf;
132}
133
134
135static struct addrlist *
136getwire_lookup(u_long address, u_long netmask, int ishost)
137{
138 struct addrlist *al;
139 u_long subnet;
140 char netNumberBuf[64];
141 char buf[GFBUFLEN], *s;
142#ifdef HAVE_IRS_H
143 struct nwent *np;
144#else /* not HAVE_IRS_H */
145 struct netent *np;
146#endif /* not HAVE_IRS_H */
147
148 /*
149 * Add interface to local network singly linked list
150 */
151 al = ALLOC(struct addrlist);
152 al->ip_addr = address;
153 al->ip_mask = netmask;
154 al->ip_net_name = NO_SUBNET; /* fill in a bit later */
155 al->ip_net_num = "0.0.0.0"; /* fill in a bit later */
156 al->ip_next = NULL;
157
158 subnet = ntohl(address) & ntohl(netmask);
159
160 if (ishost)
161 np = NULL;
162 else {
163#ifdef HAVE_IRS_H
164 u_long mask = ntohl(netmask);
165 static struct irs_acc *irs_gen;
166 static struct irs_nw *irs_nw;
167 u_long net;
168 int maskbits;
169 u_char addr[4];
170
171 if (irs_gen == NULL)
172 irs_gen = irs_gen_acc("");
173 if (irs_gen && irs_nw == NULL)
174 irs_nw = (*irs_gen->nw_map)(irs_gen);
175 net = ntohl(address) & (mask = ntohl(netmask));
176 addr[0] = (0xFF000000 & net) >> 24;
177 addr[1] = (0x00FF0000 & net) >> 16;
178 addr[2] = (0x0000FF00 & net) >> 8;
179 addr[3] = (0x000000FF & net);
180 for (maskbits = 32; !(mask & 1); mask >>= 1)
181 maskbits--;
182 np = (*irs_nw->byaddr)(irs_nw, addr, maskbits, AF_INET);
183#else /* not HAVE_IRS_H */
184 np = getnetbyaddr(subnet, AF_INET);
185 /*
186 * Some systems (IRIX 6.4) cannot getnetbyaddr on networks such as
187 * "128.59.16.0". Instead, they need to look for the short form of
188 * the network, "128.59.16". So if the first getnetbyaddr failed, we
189 * shift the subnet way from zeros and try again.
190 */
191 if (!np) {
192 u_long short_subnet = subnet;
193 while(short_subnet && (short_subnet & 0x000000ff) == 0)
194 short_subnet >>= 8;
195 np = getnetbyaddr(short_subnet, AF_INET);
196 if (np)
197 plog(XLOG_WARNING, "getnetbyaddr failed on 0x%x, succeeded on 0x%x",
198 (u_int) subnet, (u_int) short_subnet);
199 }
200#endif /* not HAVE_IRS_H */
201 }
202
203 if ((subnet & 0xffffff) == 0) {
204 sprintf(netNumberBuf, "%lu", C(subnet >> 24));
205 } else if ((subnet & 0xffff) == 0) {
206 sprintf(netNumberBuf, "%lu.%lu",
207 C(subnet >> 24), C(subnet >> 16));
208 } else if ((subnet & 0xff) == 0) {
209 sprintf(netNumberBuf, "%lu.%lu.%lu",
210 C(subnet >> 24), C(subnet >> 16),
211 C(subnet >> 8));
212 } else {
213 sprintf(netNumberBuf, "%lu.%lu.%lu.%lu",
214 C(subnet >> 24), C(subnet >> 16),
215 C(subnet >> 8), C(subnet));
216 }
217
218 /* fill in network number (string) */
219 al->ip_net_num = strdup(netNumberBuf);
220
221 if (np != NULL)
222 s = np->n_name;
223 else {
224 struct hostent *hp;
225
226 subnet = address & netmask;
227 hp = gethostbyaddr((char *) &subnet, 4, AF_INET);
228 if (hp != NULL)
229 s = (char *) hp->h_name;
230 else
231 s = inet_dquad(buf, subnet);
232 }
233
234 /* fill in network name (string) */
235 al->ip_net_name = strdup(s);
236
237 return (al);
238}
239
240
241/*
242 * Make a dotted quad from a 32bit IP address
243 * addr is in network byte order.
244 * sizeof(buf) needs to be at least 16.
245 */
246char *
247inet_dquad(char *buf, u_long addr)
248{
249 addr = ntohl(addr);
250 sprintf(buf, "%ld.%ld.%ld.%ld",
251 ((addr >> 24) & 0xff),
252 ((addr >> 16) & 0xff),
253 ((addr >> 8) & 0xff),
254 ((addr >> 0) & 0xff));
255 return buf;
256}
257
258
259/*
260 * Determine whether a network is on a local network
261 * (addr) is in network byte order.
262 */
263int
264islocalnet(u_long addr)
265{
266 addrlist *al;
267#ifdef DEBUG
268 char buf[16];
269#endif /* DEBUG */
270
271 for (al = localnets; al; al = al->ip_next)
272 if (((addr ^ al->ip_addr) & al->ip_mask) == 0)
273 return TRUE;
274
275#ifdef DEBUG
276 plog(XLOG_INFO, "%s is on a remote network", inet_dquad(buf, addr));
277#endif /* DEBUG */
278
279 return FALSE;
280}
281
282
283/*
284 * Determine whether a network name is one of the local networks
285 * of a host.
286 */
287int
288is_network_member(const char *net)
289{
290 addrlist *al;
291
292 for (al = localnets; al; al = al->ip_next)
293 if (STREQ(net, al->ip_net_name) || STREQ(net, al->ip_net_num))
294 return TRUE;
295
296 return FALSE;
297}
298
299
300#ifdef HAVE_GETIFADDRS
134void
135getwire(char **name1, char **number1)
136{
301void
302getwire(char **name1, char **number1)
303{
137 struct hostent *hp;
138 struct netent *np;
304 addrlist *al = NULL, *tail = NULL;
305 struct ifaddrs *ifaddrs, *ifap;
306#ifndef HAVE_FIELD_STRUCT_IFADDRS_IFA_NEXT
307 int count = 0, i;
308#endif /* not HAVE_FIELD_STRUCT_IFADDRS_IFA_NEXT */
309
310 ifaddrs = NULL;
311#ifdef HAVE_FIELD_STRUCT_IFADDRS_IFA_NEXT
312 if (getifaddrs(&ifaddrs) < 0)
313 goto out;
314
315 for (ifap = ifaddrs; ifap != NULL; ifap = ifap->ifa_next) {
316#else /* not HAVE_FIELD_STRUCT_IFADDRS_IFA_NEXT */
317 if (getifaddrs(&ifaddrs, &count) < 0)
318 goto out;
319
320 for (i = 0,ifap = ifaddrs; i < count; ifap++, i++) {
321#endif /* HAVE_FIELD_STRUCT_IFADDRS_IFA_NEXT */
322
323 if (!ifap || !ifap->ifa_addr || ifap->ifa_addr->sa_family != AF_INET)
324 continue;
325
326 /*
327 * If the interface is a loopback, or its not running
328 * then ignore it.
329 */
330 if ((ifap->ifa_flags & IFF_LOOPBACK) != 0)
331 continue;
332 if ((ifap->ifa_flags & IFF_RUNNING) == 0)
333 continue;
334
335 if ((ifap->ifa_flags & IFF_POINTOPOINT) == 0)
336 al = getwire_lookup(S2IN(ifap->ifa_addr), S2IN(ifap->ifa_netmask), 0);
337 else
338 al = getwire_lookup(S2IN(ifap->ifa_dstaddr), 0xffffffff, 1);
339
340 /* append to the end of the list */
341 if (!localnets) {
342 localnets = tail = al;
343 tail->ip_next = NULL;
344 } else {
345 tail->ip_next = al;
346 tail = al;
347 }
348 }
349
350out:
351 if (ifaddrs)
352 XFREE(ifaddrs);
353
354 if (localnets) {
355 *name1 = localnets->ip_net_name;
356 *number1 = localnets->ip_net_num;
357 } else {
358 *name1 = NO_SUBNET;
359 *number1 = "0.0.0.0";
360 }
361}
362
363#else /* not HAVE_GETIFADDRS */
364
365#if defined(HAVE_FIELD_STRUCT_IFREQ_IFR_ADDR) && defined(HAVE_FIELD_STRUCT_SOCKADDR_SA_LEN)
366# define SIZE(ifr) (MAX((ifr)->ifr_addr.sa_len, sizeof((ifr)->ifr_addr)) + sizeof(ifr->ifr_name))
367#else /* not defined(HAVE_FIELD_STRUCT_IFREQ_IFR_ADDR) && defined(HAVE_FIELD_STRUCT_SOCKADDR_SA_LEN) */
368# define SIZE(ifr) sizeof(struct ifreq)
369#endif /* not defined(HAVE_FIELD_STRUCT_IFREQ_IFR_ADDR) && defined(HAVE_FIELD_STRUCT_SOCKADDR_SA_LEN) */
370
371#define clist (ifc.ifc_ifcu.ifcu_req)
372#define count (ifc.ifc_len/sizeof(struct ifreq))
373
374
375void
376getwire(char **name1, char **number1)
377{
139 struct ifconf ifc;
140 struct ifreq *ifr;
141 caddr_t cp, cplim;
378 struct ifconf ifc;
379 struct ifreq *ifr;
380 caddr_t cp, cplim;
142 u_long address, netmask, subnet;
143 char buf[GFBUFLEN], *s;
144 int fd = -1;
381 int fd = -1;
382 u_long address;
383 addrlist *al = NULL, *tail = NULL;
384 char buf[GFBUFLEN];
385#if 0
145 u_long net;
146 u_long mask;
147 u_long subnetshift;
386 u_long net;
387 u_long mask;
388 u_long subnetshift;
148 char netNumberBuf[64];
149 addrlist *al = NULL, *tail = NULL;
389 char buf[GFBUFLEN], *s;
390#endif
150
151#ifndef SIOCGIFFLAGS
152 /* if cannot get interface flags, return nothing */
153 plog(XLOG_ERROR, "getwire unable to get interface flags");
154 localnets = NULL;
155 return;
156#endif /* not SIOCGIFFLAGS */
157

--- 31 unchanged lines hidden (view full) ---

189 /*
190 * Scan the list looking for a suitable interface
191 */
192 for (cp = buf; cp < cplim; cp += SIZE(ifr)) {
193 ifr = (struct ifreq *) cp;
194
195 if (ifr->ifr_addr.sa_family != AF_INET)
196 continue;
391
392#ifndef SIOCGIFFLAGS
393 /* if cannot get interface flags, return nothing */
394 plog(XLOG_ERROR, "getwire unable to get interface flags");
395 localnets = NULL;
396 return;
397#endif /* not SIOCGIFFLAGS */
398

--- 31 unchanged lines hidden (view full) ---

430 /*
431 * Scan the list looking for a suitable interface
432 */
433 for (cp = buf; cp < cplim; cp += SIZE(ifr)) {
434 ifr = (struct ifreq *) cp;
435
436 if (ifr->ifr_addr.sa_family != AF_INET)
437 continue;
197 else
198 address = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
199
438
439 address = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
440
200 /*
201 * Get interface flags
202 */
203 if (ioctl(fd, SIOCGIFFLAGS, (caddr_t) ifr) < 0)
204 continue;
205
206 /*
207 * If the interface is a loopback, or its not running

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220 continue;
221#endif /* IFF_ROUTE */
222
223 /* if the interface is not UP or not RUNNING, skip it */
224 if ((ifr->ifr_flags & IFF_RUNNING) == 0 ||
225 (ifr->ifr_flags & IFF_UP) == 0)
226 continue;
227
441 /*
442 * Get interface flags
443 */
444 if (ioctl(fd, SIOCGIFFLAGS, (caddr_t) ifr) < 0)
445 continue;
446
447 /*
448 * If the interface is a loopback, or its not running

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461 continue;
462#endif /* IFF_ROUTE */
463
464 /* if the interface is not UP or not RUNNING, skip it */
465 if ((ifr->ifr_flags & IFF_RUNNING) == 0 ||
466 (ifr->ifr_flags & IFF_UP) == 0)
467 continue;
468
228 /*
229 * Get the netmask of this interface
230 */
231 if (ioctl(fd, SIOCGIFNETMASK, (caddr_t) ifr) < 0)
232 continue;
469 if ((ifr->ifr_flags & IFF_POINTOPOINT) == 0) {
470 /*
471 * Get the netmask of this interface
472 */
473 if (ioctl(fd, SIOCGIFNETMASK, (caddr_t) ifr) < 0)
474 continue;
233
475
234 netmask = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
476 al = getwire_lookup(address, S2IN(&ifr->ifr_addr), 0);
477 } else
478 al = getwire_lookup(address, 0xffffffff, 1);
235
479
236 /*
237 * Add interface to local network singly linked list
238 */
239 al = ALLOC(struct addrlist);
240 al->ip_addr = address;
241 al->ip_mask = netmask;
242 al->ip_net_name = NO_SUBNET; /* fill in a bit later */
243 al->ip_net_num = "0.0.0.0"; /* fill in a bit later */
244 al->ip_next = NULL;
245 /* append to the end of the list */
246 if (!localnets) {
247 localnets = tail = al;
248 tail->ip_next = NULL;
249 } else {
250 tail->ip_next = al;
251 tail = al;
252 }
480 /* append to the end of the list */
481 if (!localnets) {
482 localnets = tail = al;
483 tail->ip_next = NULL;
484 } else {
485 tail->ip_next = al;
486 tail = al;
487 }
253
254 /*
255 * Figure out the subnet's network address
256 */
257 subnet = address & netmask;
258
259#ifdef IN_CLASSA
260 subnet = htonl(subnet);
261
262 if (IN_CLASSA(subnet)) {
263 mask = IN_CLASSA_NET;
264 subnetshift = 8;
265 } else if (IN_CLASSB(subnet)) {
266 mask = IN_CLASSB_NET;
267 subnetshift = 8;
268 } else {
269 mask = IN_CLASSC_NET;
270 subnetshift = 4;
271 }
272
273 /*
274 * If there are more bits than the standard mask
275 * would suggest, subnets must be in use.
276 * Guess at the subnet mask, assuming reasonable
277 * width subnet fields.
278 * XXX: Or-in at least 1 byte's worth of 1s to make
279 * sure the top bits remain set.
280 */
281 while (subnet & ~mask)
282 mask = (mask >> subnetshift) | 0xff000000;
283
284 net = subnet & mask;
285 while ((mask & 1) == 0)
286 mask >>= 1, net >>= 1;
287
288 /*
289 * Now get a usable name.
290 * First use the network database,
291 * then the host database,
292 * and finally just make a dotted quad.
293 */
294 np = getnetbyaddr(net, AF_INET);
295
296 /* the network address has been masked off */
297 if ((subnet & 0xffffff) == 0) {
298 sprintf(netNumberBuf, "%lu", C(subnet >> 24));
299 } else if ((subnet & 0xffff) == 0) {
300 sprintf(netNumberBuf, "%lu.%lu",
301 C(subnet >> 24), C(subnet >> 16));
302 } else if ((subnet & 0xff) == 0) {
303 sprintf(netNumberBuf, "%lu.%lu.%lu",
304 C(subnet >> 24), C(subnet >> 16),
305 C(subnet >> 8));
306 } else {
307 sprintf(netNumberBuf, "%lu.%lu.%lu.%lu",
308 C(subnet >> 24), C(subnet >> 16),
309 C(subnet >> 8), C(subnet));
310 }
311
312 /* fill in network number (string) */
313 al->ip_net_num = strdup(netNumberBuf);
314
315#else /* not IN_CLASSA */
316 /* This is probably very wrong. */
317 np = getnetbyaddr(subnet, AF_INET);
318#endif /* not IN_CLASSA */
319
320 if (np)
321 s = np->n_name;
322 else {
323 subnet = address & netmask;
324 hp = gethostbyaddr((char *) &subnet, 4, AF_INET);
325 if (hp)
326 s = (char *) hp->h_name;
327 else
328 s = inet_dquad(buf, subnet);
329 }
330
331 /* fill in network name (string) */
332 al->ip_net_name = strdup(s);
333 }
334
335out:
336 if (fd >= 0)
337 close(fd);
338 if (localnets) {
339 *name1 = localnets->ip_net_name;
340 *number1 = localnets->ip_net_num;
341 } else {
342 *name1 = NO_SUBNET;
343 *number1 = "0.0.0.0";
344 }
345}
488 }
489
490out:
491 if (fd >= 0)
492 close(fd);
493 if (localnets) {
494 *name1 = localnets->ip_net_name;
495 *number1 = localnets->ip_net_num;
496 } else {
497 *name1 = NO_SUBNET;
498 *number1 = "0.0.0.0";
499 }
500}
346
347
348/*
349 * Make a dotted quad from a 32bit IP address
350 * addr is in network byte order.
351 * sizeof(buf) needs to be at least 16.
352 */
353char *
354inet_dquad(char *buf, u_long addr)
355{
356 addr = ntohl(addr);
357 sprintf(buf, "%ld.%ld.%ld.%ld",
358 ((addr >> 24) & 0xff),
359 ((addr >> 16) & 0xff),
360 ((addr >> 8) & 0xff),
361 ((addr >> 0) & 0xff));
362 return buf;
363}
364
365
366/*
367 * Determine whether a network is on a local network
368 * (addr) is in network byte order.
369 */
370int
371islocalnet(u_long addr)
372{
373 addrlist *al;
374#ifdef DEBUG
375 char buf[16];
376#endif /* DEBUG */
377
378 for (al = localnets; al; al = al->ip_next)
379 if (((addr ^ al->ip_addr) & al->ip_mask) == 0)
380 return TRUE;
381
382#ifdef DEBUG
383 plog(XLOG_INFO, "%s is on a remote network", inet_dquad(buf, addr));
384#endif /* DEBUG */
385
386 return FALSE;
387}
388
389
390/*
391 * Determine whether a network name is one of the local networks
392 * of a host.
393 */
394int
395is_network_member(const char *net)
396{
397 addrlist *al;
398
399 for (al = localnets; al; al = al->ip_next)
400 if (STREQ(net, al->ip_net_name) || STREQ(net, al->ip_net_num))
401 return TRUE;
402
403 return FALSE;
404}
501#endif /* not HAVE_GETIFADDRS */