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8041b5ba | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
4e8c8252 | 2 | |
4e8c8252 | 3 | /*** |
cbc06dcd | 4 | This file is part of systemd. |
4e8c8252 | 5 | |
8041b5ba | 6 | Copyright 2008-2011 Lennart Poettering |
4e8c8252 | 7 | |
cbc06dcd TG |
8 | systemd is free software; you can redistribute it and/or modify it |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
4e8c8252 | 12 | |
cbc06dcd TG |
13 | systemd is distributed in the hope that it will be useful, but |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
8041b5ba LP |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
16 | Lesser General Public License for more details. | |
4e8c8252 | 17 | |
cbc06dcd TG |
18 | You should have received a copy of the GNU Lesser General Public License |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
4e8c8252 | 20 | ***/ |
6b21f0cf | 21 | |
6b21f0cf | 22 | #include <errno.h> |
4e8c8252 | 23 | #include <net/if.h> |
07630cea LP |
24 | #include <netdb.h> |
25 | #include <nss.h> | |
8041b5ba | 26 | #include <stdlib.h> |
07630cea | 27 | #include <string.h> |
8041b5ba | 28 | |
07630cea | 29 | #include "hostname-util.h" |
e80af1bd | 30 | #include "local-addresses.h" |
1c633045 | 31 | #include "macro.h" |
c9fdc26e | 32 | #include "nss-util.h" |
07630cea | 33 | #include "string-util.h" |
c9fdc26e | 34 | #include "util.h" |
4e8c8252 LP |
35 | |
36 | /* We use 127.0.0.2 as IPv4 address. This has the advantage over | |
37 | * 127.0.0.1 that it can be translated back to the local hostname. For | |
38 | * IPv6 we use ::1 which unfortunately will not translate back to the | |
3fdcecc8 | 39 | * hostname but instead something like "localhost" or so. */ |
4e8c8252 LP |
40 | |
41 | #define LOCALADDRESS_IPV4 (htonl(0x7F000002)) | |
42 | #define LOCALADDRESS_IPV6 &in6addr_loopback | |
4e8c8252 | 43 | |
c9fdc26e LP |
44 | NSS_GETHOSTBYNAME_PROTOTYPES(myhostname); |
45 | NSS_GETHOSTBYADDR_PROTOTYPES(myhostname); | |
8041b5ba | 46 | |
4e8c8252 LP |
47 | enum nss_status _nss_myhostname_gethostbyname4_r( |
48 | const char *name, | |
49 | struct gaih_addrtuple **pat, | |
50 | char *buffer, size_t buflen, | |
51 | int *errnop, int *h_errnop, | |
52 | int32_t *ttlp) { | |
53 | ||
8041b5ba | 54 | struct gaih_addrtuple *r_tuple, *r_tuple_prev = NULL; |
e80af1bd | 55 | _cleanup_free_ struct local_address *addresses = NULL; |
5502f0d9 LP |
56 | _cleanup_free_ char *hn = NULL; |
57 | const char *canonical = NULL; | |
e80af1bd | 58 | int n_addresses = 0, lo_ifi; |
e8a7a315 | 59 | uint32_t local_address_ipv4; |
e80af1bd | 60 | struct local_address *a; |
5502f0d9 LP |
61 | size_t l, idx, ms; |
62 | char *r_name; | |
e80af1bd | 63 | unsigned n; |
4e8c8252 | 64 | |
5502f0d9 LP |
65 | assert(name); |
66 | assert(pat); | |
67 | assert(buffer); | |
68 | assert(errnop); | |
69 | assert(h_errnop); | |
70 | ||
71 | if (is_localhost(name)) { | |
e8a7a315 LP |
72 | /* We respond to 'localhost', so that /etc/hosts |
73 | * is optional */ | |
4e8c8252 | 74 | |
e8a7a315 LP |
75 | canonical = "localhost"; |
76 | local_address_ipv4 = htonl(INADDR_LOOPBACK); | |
e9140aff | 77 | |
46a5e0e7 | 78 | } else if (is_gateway_hostname(name)) { |
e9140aff | 79 | |
1d050e1e | 80 | n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses); |
e9140aff LP |
81 | if (n_addresses <= 0) { |
82 | *errnop = ENOENT; | |
83 | *h_errnop = HOST_NOT_FOUND; | |
84 | return NSS_STATUS_NOTFOUND; | |
85 | } | |
86 | ||
87 | canonical = "gateway"; | |
88 | ||
e8a7a315 | 89 | } else { |
5502f0d9 LP |
90 | hn = gethostname_malloc(); |
91 | if (!hn) { | |
92 | *errnop = ENOMEM; | |
e8a7a315 | 93 | *h_errnop = NO_RECOVERY; |
5502f0d9 | 94 | return NSS_STATUS_TRYAGAIN; |
e8a7a315 LP |
95 | } |
96 | ||
5502f0d9 LP |
97 | /* We respond to our local host name, our our hostname suffixed with a single dot. */ |
98 | if (!streq(name, hn) && !streq_ptr(startswith(name, hn), ".")) { | |
e8a7a315 LP |
99 | *errnop = ENOENT; |
100 | *h_errnop = HOST_NOT_FOUND; | |
101 | return NSS_STATUS_NOTFOUND; | |
102 | } | |
103 | ||
1d050e1e | 104 | n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
e80af1bd LP |
105 | if (n_addresses < 0) |
106 | n_addresses = 0; | |
e8a7a315 LP |
107 | |
108 | canonical = hn; | |
109 | local_address_ipv4 = LOCALADDRESS_IPV4; | |
110 | } | |
8041b5ba | 111 | |
4e8c8252 | 112 | /* If this call fails we fill in 0 as scope. Which is fine */ |
f4324288 | 113 | lo_ifi = n_addresses <= 0 ? LOOPBACK_IFINDEX : 0; |
4e8c8252 | 114 | |
e8a7a315 | 115 | l = strlen(canonical); |
5502f0d9 | 116 | ms = ALIGN(l+1) + ALIGN(sizeof(struct gaih_addrtuple)) * (n_addresses > 0 ? n_addresses : 2); |
4e8c8252 LP |
117 | if (buflen < ms) { |
118 | *errnop = ENOMEM; | |
119 | *h_errnop = NO_RECOVERY; | |
120 | return NSS_STATUS_TRYAGAIN; | |
121 | } | |
122 | ||
123 | /* First, fill in hostname */ | |
124 | r_name = buffer; | |
e8a7a315 | 125 | memcpy(r_name, canonical, l+1); |
4e8c8252 LP |
126 | idx = ALIGN(l+1); |
127 | ||
8041b5ba LP |
128 | if (n_addresses <= 0) { |
129 | /* Second, fill in IPv6 tuple */ | |
130 | r_tuple = (struct gaih_addrtuple*) (buffer + idx); | |
131 | r_tuple->next = r_tuple_prev; | |
132 | r_tuple->name = r_name; | |
133 | r_tuple->family = AF_INET6; | |
134 | memcpy(r_tuple->addr, LOCALADDRESS_IPV6, 16); | |
135 | r_tuple->scopeid = (uint32_t) lo_ifi; | |
136 | ||
137 | idx += ALIGN(sizeof(struct gaih_addrtuple)); | |
138 | r_tuple_prev = r_tuple; | |
139 | ||
140 | /* Third, fill in IPv4 tuple */ | |
141 | r_tuple = (struct gaih_addrtuple*) (buffer + idx); | |
142 | r_tuple->next = r_tuple_prev; | |
143 | r_tuple->name = r_name; | |
144 | r_tuple->family = AF_INET; | |
e8a7a315 | 145 | *(uint32_t*) r_tuple->addr = local_address_ipv4; |
8041b5ba LP |
146 | r_tuple->scopeid = (uint32_t) lo_ifi; |
147 | ||
148 | idx += ALIGN(sizeof(struct gaih_addrtuple)); | |
149 | r_tuple_prev = r_tuple; | |
150 | } | |
151 | ||
152 | /* Fourth, fill actual addresses in, but in backwards order */ | |
e80af1bd | 153 | for (a = addresses + n_addresses - 1, n = 0; (int) n < n_addresses; n++, a--) { |
8041b5ba LP |
154 | r_tuple = (struct gaih_addrtuple*) (buffer + idx); |
155 | r_tuple->next = r_tuple_prev; | |
156 | r_tuple->name = r_name; | |
157 | r_tuple->family = a->family; | |
158 | r_tuple->scopeid = a->ifindex; | |
5502f0d9 | 159 | memcpy(r_tuple->addr, &a->address, 16); |
8041b5ba LP |
160 | |
161 | idx += ALIGN(sizeof(struct gaih_addrtuple)); | |
162 | r_tuple_prev = r_tuple; | |
163 | } | |
4e8c8252 LP |
164 | |
165 | /* Verify the size matches */ | |
166 | assert(idx == ms); | |
167 | ||
d2f1f23a ED |
168 | /* Nscd expects us to store the first record in **pat. */ |
169 | if (*pat) | |
170 | **pat = *r_tuple_prev; | |
171 | else | |
172 | *pat = r_tuple_prev; | |
4e8c8252 LP |
173 | |
174 | if (ttlp) | |
175 | *ttlp = 0; | |
176 | ||
e70df46b LP |
177 | /* Explicitly reset all error variables */ |
178 | *errnop = 0; | |
179 | *h_errnop = NETDB_SUCCESS; | |
180 | h_errno = 0; | |
181 | ||
4e8c8252 LP |
182 | return NSS_STATUS_SUCCESS; |
183 | } | |
6b21f0cf LP |
184 | |
185 | static enum nss_status fill_in_hostent( | |
e8a7a315 | 186 | const char *canonical, const char *additional, |
4e8c8252 | 187 | int af, |
e80af1bd | 188 | struct local_address *addresses, unsigned n_addresses, |
e8a7a315 | 189 | uint32_t local_address_ipv4, |
4e8c8252 LP |
190 | struct hostent *result, |
191 | char *buffer, size_t buflen, | |
192 | int *errnop, int *h_errnop, | |
193 | int32_t *ttlp, | |
194 | char **canonp) { | |
195 | ||
d4c9895d | 196 | size_t l_canonical, l_additional, idx, ms, alen; |
e8a7a315 | 197 | char *r_addr, *r_name, *r_aliases, *r_alias = NULL, *r_addr_list; |
e80af1bd | 198 | struct local_address *a; |
e8a7a315 | 199 | unsigned n, c; |
8041b5ba | 200 | |
5502f0d9 LP |
201 | assert(canonical); |
202 | assert(result); | |
203 | assert(buffer); | |
204 | assert(errnop); | |
205 | assert(h_errnop); | |
206 | ||
9d485985 | 207 | alen = FAMILY_ADDRESS_SIZE(af); |
8041b5ba | 208 | |
8041b5ba LP |
209 | for (a = addresses, n = 0, c = 0; n < n_addresses; a++, n++) |
210 | if (af == a->family) | |
211 | c++; | |
4e8c8252 | 212 | |
e8a7a315 LP |
213 | l_canonical = strlen(canonical); |
214 | l_additional = additional ? strlen(additional) : 0; | |
215 | ms = ALIGN(l_canonical+1)+ | |
216 | (additional ? ALIGN(l_additional+1) : 0) + | |
5502f0d9 | 217 | sizeof(char*) + |
e8a7a315 | 218 | (additional ? sizeof(char*) : 0) + |
d4c9895d | 219 | (c > 0 ? c : 1) * ALIGN(alen) + |
5502f0d9 | 220 | (c > 0 ? c+1 : 2) * sizeof(char*); |
8041b5ba | 221 | |
4e8c8252 LP |
222 | if (buflen < ms) { |
223 | *errnop = ENOMEM; | |
224 | *h_errnop = NO_RECOVERY; | |
225 | return NSS_STATUS_TRYAGAIN; | |
226 | } | |
227 | ||
e8a7a315 | 228 | /* First, fill in hostnames */ |
4e8c8252 | 229 | r_name = buffer; |
e8a7a315 LP |
230 | memcpy(r_name, canonical, l_canonical+1); |
231 | idx = ALIGN(l_canonical+1); | |
4e8c8252 | 232 | |
e8a7a315 LP |
233 | if (additional) { |
234 | r_alias = buffer + idx; | |
235 | memcpy(r_alias, additional, l_additional+1); | |
236 | idx += ALIGN(l_additional+1); | |
237 | } | |
238 | ||
239 | /* Second, create aliases array */ | |
4e8c8252 | 240 | r_aliases = buffer + idx; |
e8a7a315 LP |
241 | if (additional) { |
242 | ((char**) r_aliases)[0] = r_alias; | |
243 | ((char**) r_aliases)[1] = NULL; | |
244 | idx += 2*sizeof(char*); | |
245 | } else { | |
246 | ((char**) r_aliases)[0] = NULL; | |
247 | idx += sizeof(char*); | |
248 | } | |
4e8c8252 | 249 | |
8041b5ba | 250 | /* Third, add addresses */ |
4e8c8252 | 251 | r_addr = buffer + idx; |
8041b5ba LP |
252 | if (c > 0) { |
253 | unsigned i = 0; | |
254 | ||
255 | for (a = addresses, n = 0; n < n_addresses; a++, n++) { | |
256 | if (af != a->family) | |
257 | continue; | |
258 | ||
5502f0d9 | 259 | memcpy(r_addr + i*ALIGN(alen), &a->address, alen); |
8041b5ba LP |
260 | i++; |
261 | } | |
262 | ||
263 | assert(i == c); | |
264 | idx += c*ALIGN(alen); | |
265 | } else { | |
266 | if (af == AF_INET) | |
e8a7a315 | 267 | *(uint32_t*) r_addr = local_address_ipv4; |
8041b5ba LP |
268 | else |
269 | memcpy(r_addr, LOCALADDRESS_IPV6, 16); | |
270 | ||
271 | idx += ALIGN(alen); | |
272 | } | |
4e8c8252 LP |
273 | |
274 | /* Fourth, add address pointer array */ | |
275 | r_addr_list = buffer + idx; | |
8041b5ba | 276 | if (c > 0) { |
d4c9895d | 277 | unsigned i; |
8041b5ba | 278 | |
d4c9895d LP |
279 | for (i = 0; i < c; i++) |
280 | ((char**) r_addr_list)[i] = r_addr + i*ALIGN(alen); | |
8041b5ba | 281 | |
d4c9895d LP |
282 | ((char**) r_addr_list)[i] = NULL; |
283 | idx += (c+1) * sizeof(char*); | |
8041b5ba LP |
284 | |
285 | } else { | |
286 | ((char**) r_addr_list)[0] = r_addr; | |
287 | ((char**) r_addr_list)[1] = NULL; | |
d4c9895d | 288 | idx += 2 * sizeof(char*); |
8041b5ba | 289 | } |
4e8c8252 LP |
290 | |
291 | /* Verify the size matches */ | |
292 | assert(idx == ms); | |
293 | ||
294 | result->h_name = r_name; | |
295 | result->h_aliases = (char**) r_aliases; | |
296 | result->h_addrtype = af; | |
297 | result->h_length = alen; | |
298 | result->h_addr_list = (char**) r_addr_list; | |
299 | ||
300 | if (ttlp) | |
301 | *ttlp = 0; | |
302 | ||
303 | if (canonp) | |
304 | *canonp = r_name; | |
305 | ||
e70df46b LP |
306 | /* Explicitly reset all error variables */ |
307 | *errnop = 0; | |
308 | *h_errnop = NETDB_SUCCESS; | |
309 | h_errno = 0; | |
310 | ||
4e8c8252 | 311 | return NSS_STATUS_SUCCESS; |
6b21f0cf LP |
312 | } |
313 | ||
4e8c8252 LP |
314 | enum nss_status _nss_myhostname_gethostbyname3_r( |
315 | const char *name, | |
316 | int af, | |
317 | struct hostent *host, | |
318 | char *buffer, size_t buflen, | |
319 | int *errnop, int *h_errnop, | |
320 | int32_t *ttlp, | |
321 | char **canonp) { | |
6b21f0cf | 322 | |
e80af1bd | 323 | _cleanup_free_ struct local_address *addresses = NULL; |
e8a7a315 | 324 | const char *canonical, *additional = NULL; |
5502f0d9 | 325 | _cleanup_free_ char *hn = NULL; |
e9140aff | 326 | uint32_t local_address_ipv4 = 0; |
e80af1bd | 327 | int n_addresses = 0; |
5502f0d9 LP |
328 | |
329 | assert(name); | |
330 | assert(host); | |
331 | assert(buffer); | |
332 | assert(errnop); | |
333 | assert(h_errnop); | |
6b21f0cf | 334 | |
4e8c8252 LP |
335 | if (af == AF_UNSPEC) |
336 | af = AF_INET; | |
6b21f0cf | 337 | |
4e8c8252 LP |
338 | if (af != AF_INET && af != AF_INET6) { |
339 | *errnop = EAFNOSUPPORT; | |
340 | *h_errnop = NO_DATA; | |
341 | return NSS_STATUS_UNAVAIL; | |
342 | } | |
6b21f0cf | 343 | |
5502f0d9 | 344 | if (is_localhost(name)) { |
e8a7a315 LP |
345 | canonical = "localhost"; |
346 | local_address_ipv4 = htonl(INADDR_LOOPBACK); | |
e9140aff | 347 | |
46a5e0e7 | 348 | } else if (is_gateway_hostname(name)) { |
e9140aff | 349 | |
1d050e1e | 350 | n_addresses = local_gateways(NULL, 0, af, &addresses); |
e9140aff LP |
351 | if (n_addresses <= 0) { |
352 | *errnop = ENOENT; | |
353 | *h_errnop = HOST_NOT_FOUND; | |
354 | return NSS_STATUS_NOTFOUND; | |
355 | } | |
356 | ||
357 | canonical = "gateway"; | |
358 | ||
e8a7a315 | 359 | } else { |
5502f0d9 LP |
360 | hn = gethostname_malloc(); |
361 | if (!hn) { | |
362 | *errnop = ENOMEM; | |
e8a7a315 | 363 | *h_errnop = NO_RECOVERY; |
5502f0d9 | 364 | return NSS_STATUS_TRYAGAIN; |
e8a7a315 | 365 | } |
6b21f0cf | 366 | |
5502f0d9 | 367 | if (!streq(name, hn) && !streq_ptr(startswith(name, hn), ".")) { |
e8a7a315 LP |
368 | *errnop = ENOENT; |
369 | *h_errnop = HOST_NOT_FOUND; | |
370 | return NSS_STATUS_NOTFOUND; | |
371 | } | |
372 | ||
1d050e1e | 373 | n_addresses = local_addresses(NULL, 0, af, &addresses); |
e80af1bd LP |
374 | if (n_addresses < 0) |
375 | n_addresses = 0; | |
e8a7a315 LP |
376 | |
377 | canonical = hn; | |
378 | additional = n_addresses <= 0 && af == AF_INET6 ? "localhost" : NULL; | |
379 | local_address_ipv4 = LOCALADDRESS_IPV4; | |
4e8c8252 | 380 | } |
6b21f0cf | 381 | |
e8a7a315 LP |
382 | return fill_in_hostent( |
383 | canonical, additional, | |
384 | af, | |
385 | addresses, n_addresses, | |
386 | local_address_ipv4, | |
387 | host, | |
388 | buffer, buflen, | |
389 | errnop, h_errnop, | |
390 | ttlp, | |
391 | canonp); | |
4e8c8252 | 392 | } |
6b21f0cf | 393 | |
4e8c8252 LP |
394 | enum nss_status _nss_myhostname_gethostbyaddr2_r( |
395 | const void* addr, socklen_t len, | |
396 | int af, | |
397 | struct hostent *host, | |
398 | char *buffer, size_t buflen, | |
399 | int *errnop, int *h_errnop, | |
400 | int32_t *ttlp) { | |
6b21f0cf | 401 | |
e8a7a315 | 402 | const char *canonical = NULL, *additional = NULL; |
5502f0d9 | 403 | uint32_t local_address_ipv4 = LOCALADDRESS_IPV4; |
e80af1bd | 404 | _cleanup_free_ struct local_address *addresses = NULL; |
5502f0d9 | 405 | _cleanup_free_ char *hn = NULL; |
e80af1bd LP |
406 | int n_addresses = 0; |
407 | struct local_address *a; | |
3fdcecc8 | 408 | bool additional_from_hostname = false; |
e80af1bd | 409 | unsigned n; |
5502f0d9 LP |
410 | |
411 | assert(addr); | |
412 | assert(host); | |
413 | assert(buffer); | |
414 | assert(errnop); | |
415 | assert(h_errnop); | |
8041b5ba | 416 | |
555bd6e9 LP |
417 | if (!IN_SET(af, AF_INET, AF_INET6)) { |
418 | *errnop = EAFNOSUPPORT; | |
419 | *h_errnop = NO_DATA; | |
420 | return NSS_STATUS_UNAVAIL; | |
421 | } | |
422 | ||
9d485985 | 423 | if (len != FAMILY_ADDRESS_SIZE(af)) { |
8041b5ba LP |
424 | *errnop = EINVAL; |
425 | *h_errnop = NO_RECOVERY; | |
426 | return NSS_STATUS_UNAVAIL; | |
427 | } | |
6b21f0cf | 428 | |
4e8c8252 | 429 | if (af == AF_INET) { |
8041b5ba LP |
430 | if ((*(uint32_t*) addr) == LOCALADDRESS_IPV4) |
431 | goto found; | |
6b21f0cf | 432 | |
e8a7a315 LP |
433 | if ((*(uint32_t*) addr) == htonl(INADDR_LOOPBACK)) { |
434 | canonical = "localhost"; | |
435 | local_address_ipv4 = htonl(INADDR_LOOPBACK); | |
436 | goto found; | |
437 | } | |
438 | ||
555bd6e9 LP |
439 | } else { |
440 | assert(af == AF_INET6); | |
8041b5ba | 441 | |
e8a7a315 | 442 | if (memcmp(addr, LOCALADDRESS_IPV6, 16) == 0) { |
3fdcecc8 LP |
443 | canonical = "localhost"; |
444 | additional_from_hostname = true; | |
8041b5ba | 445 | goto found; |
e8a7a315 | 446 | } |
4e8c8252 LP |
447 | } |
448 | ||
1d050e1e | 449 | n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses); |
e9140aff LP |
450 | if (n_addresses > 0) { |
451 | for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) { | |
452 | if (af != a->family) | |
453 | continue; | |
8041b5ba | 454 | |
3fdcecc8 | 455 | if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) |
e9140aff | 456 | goto found; |
e9140aff LP |
457 | } |
458 | } | |
459 | ||
97b11eed | 460 | addresses = mfree(addresses); |
e9140aff | 461 | |
1d050e1e | 462 | n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses); |
e9140aff LP |
463 | if (n_addresses > 0) { |
464 | for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) { | |
465 | if (af != a->family) | |
466 | continue; | |
467 | ||
468 | if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) { | |
e9140aff LP |
469 | canonical = "gateway"; |
470 | goto found; | |
471 | } | |
472 | } | |
8041b5ba LP |
473 | } |
474 | ||
475 | *errnop = ENOENT; | |
476 | *h_errnop = HOST_NOT_FOUND; | |
477 | ||
8041b5ba LP |
478 | return NSS_STATUS_NOTFOUND; |
479 | ||
480 | found: | |
3fdcecc8 LP |
481 | if (!canonical || (!additional && additional_from_hostname)) { |
482 | hn = gethostname_malloc(); | |
483 | if (!hn) { | |
484 | *errnop = ENOMEM; | |
485 | *h_errnop = NO_RECOVERY; | |
486 | return NSS_STATUS_TRYAGAIN; | |
487 | } | |
488 | ||
489 | if (!canonical) | |
490 | canonical = hn; | |
491 | ||
492 | if (!additional && additional_from_hostname) | |
493 | additional = hn; | |
494 | } | |
4e8c8252 | 495 | |
e8a7a315 LP |
496 | return fill_in_hostent( |
497 | canonical, additional, | |
498 | af, | |
499 | addresses, n_addresses, | |
500 | local_address_ipv4, | |
501 | host, | |
502 | buffer, buflen, | |
503 | errnop, h_errnop, | |
504 | ttlp, | |
505 | NULL); | |
4e8c8252 | 506 | } |
6b21f0cf | 507 | |
c9fdc26e LP |
508 | NSS_GETHOSTBYNAME_FALLBACKS(myhostname); |
509 | NSS_GETHOSTBYADDR_FALLBACKS(myhostname); |