2 * Copyright (C) 2004, 2006 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: sockaddr.c,v 1.48.2.1.2.12 2006/03/02 00:37:20 marka Exp $ */
24 #include <isc/buffer.h>
27 #include <isc/netaddr.h>
28 #include <isc/print.h>
29 #include <isc/region.h>
30 #include <isc/sockaddr.h>
31 #include <isc/string.h>
35 isc_sockaddr_equal(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
36 REQUIRE(a != NULL && b != NULL);
38 if (a->length != b->length)
42 * We don't just memcmp because the sin_zero field isn't always
46 if (a->type.sa.sa_family != b->type.sa.sa_family)
48 switch (a->type.sa.sa_family) {
50 if (memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
51 sizeof(a->type.sin.sin_addr)) != 0)
53 if (a->type.sin.sin_port != b->type.sin.sin_port)
57 if (memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
58 sizeof(a->type.sin6.sin6_addr)) != 0)
60 #ifdef ISC_PLATFORM_HAVESCOPEID
61 if (a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id)
64 if (a->type.sin6.sin6_port != b->type.sin6.sin6_port)
68 if (memcmp(&a->type, &b->type, a->length) != 0)
75 isc_sockaddr_eqaddr(const isc_sockaddr_t *a, const isc_sockaddr_t *b) {
76 REQUIRE(a != NULL && b != NULL);
78 if (a->length != b->length)
81 if (a->type.sa.sa_family != b->type.sa.sa_family)
83 switch (a->type.sa.sa_family) {
85 if (memcmp(&a->type.sin.sin_addr, &b->type.sin.sin_addr,
86 sizeof(a->type.sin.sin_addr)) != 0)
90 if (memcmp(&a->type.sin6.sin6_addr, &b->type.sin6.sin6_addr,
91 sizeof(a->type.sin6.sin6_addr)) != 0)
93 #ifdef ISC_PLATFORM_HAVESCOPEID
94 if (a->type.sin6.sin6_scope_id != b->type.sin6.sin6_scope_id)
99 if (memcmp(&a->type, &b->type, a->length) != 0)
106 isc_sockaddr_eqaddrprefix(const isc_sockaddr_t *a, const isc_sockaddr_t *b,
107 unsigned int prefixlen)
109 isc_netaddr_t na, nb;
110 isc_netaddr_fromsockaddr(&na, a);
111 isc_netaddr_fromsockaddr(&nb, b);
112 return (isc_netaddr_eqprefix(&na, &nb, prefixlen));
116 isc_sockaddr_totext(const isc_sockaddr_t *sockaddr, isc_buffer_t *target) {
118 isc_netaddr_t netaddr;
119 char pbuf[sizeof("65000")];
123 REQUIRE(sockaddr != NULL);
126 * Do the port first, giving us the opportunity to check for
127 * unsupported address families before calling
128 * isc_netaddr_fromsockaddr().
130 switch (sockaddr->type.sa.sa_family) {
132 snprintf(pbuf, sizeof(pbuf), "%u", ntohs(sockaddr->type.sin.sin_port));
135 snprintf(pbuf, sizeof(pbuf), "%u", ntohs(sockaddr->type.sin6.sin6_port));
138 return (ISC_R_FAILURE);
142 INSIST(plen < sizeof(pbuf));
144 isc_netaddr_fromsockaddr(&netaddr, sockaddr);
145 result = isc_netaddr_totext(&netaddr, target);
146 if (result != ISC_R_SUCCESS)
149 if (1 + plen + 1 > isc_buffer_availablelength(target))
150 return (ISC_R_NOSPACE);
152 isc_buffer_putmem(target, (const unsigned char *)"#", 1);
153 isc_buffer_putmem(target, (const unsigned char *)pbuf, plen);
156 * Null terminate after used region.
158 isc_buffer_availableregion(target, &avail);
159 INSIST(avail.length >= 1);
160 avail.base[0] = '\0';
162 return (ISC_R_SUCCESS);
166 isc_sockaddr_format(const isc_sockaddr_t *sa, char *array, unsigned int size) {
170 isc_buffer_init(&buf, array, size);
171 result = isc_sockaddr_totext(sa, &buf);
172 if (result != ISC_R_SUCCESS) {
174 * The message is the same as in netaddr.c.
176 snprintf(array, size,
177 isc_msgcat_get(isc_msgcat, ISC_MSGSET_NETADDR,
179 "<unknown address, family %u>"),
180 sa->type.sa.sa_family);
181 array[size - 1] = '\0';
186 isc_sockaddr_hash(const isc_sockaddr_t *sockaddr, isc_boolean_t address_only) {
187 unsigned int length = 0;
188 const unsigned char *s = NULL;
192 const struct in6_addr *in6;
194 REQUIRE(sockaddr != NULL);
196 switch (sockaddr->type.sa.sa_family) {
198 s = (const unsigned char *)&sockaddr->type.sin.sin_addr;
199 p = ntohs(sockaddr->type.sin.sin_port);
200 length = sizeof(sockaddr->type.sin.sin_addr.s_addr);
203 in6 = &sockaddr->type.sin6.sin6_addr;
204 if (IN6_IS_ADDR_V4MAPPED(in6)) {
205 s = (const unsigned char *)&in6[12];
206 length = sizeof(sockaddr->type.sin.sin_addr.s_addr);
208 s = (const unsigned char *)in6;
209 length = sizeof(sockaddr->type.sin6.sin6_addr);
211 p = ntohs(sockaddr->type.sin6.sin6_port);
214 UNEXPECTED_ERROR(__FILE__, __LINE__,
215 isc_msgcat_get(isc_msgcat,
217 ISC_MSG_UNKNOWNFAMILY,
218 "unknown address family: %d"),
219 (int)sockaddr->type.sa.sa_family);
220 s = (const unsigned char *)&sockaddr->type;
221 length = sockaddr->length;
225 h = isc_hash_calc(s, length, ISC_TRUE);
227 g = isc_hash_calc((const unsigned char *)&p, sizeof(p),
229 h = h ^ g; /* XXX: we should concatenate h and p first */
236 isc_sockaddr_any(isc_sockaddr_t *sockaddr)
238 memset(sockaddr, 0, sizeof(*sockaddr));
239 sockaddr->type.sin.sin_family = AF_INET;
240 #ifdef ISC_PLATFORM_HAVESALEN
241 sockaddr->type.sin.sin_len = sizeof(sockaddr->type.sin);
243 sockaddr->type.sin.sin_addr.s_addr = INADDR_ANY;
244 sockaddr->type.sin.sin_port = 0;
245 sockaddr->length = sizeof(sockaddr->type.sin);
246 ISC_LINK_INIT(sockaddr, link);
250 isc_sockaddr_any6(isc_sockaddr_t *sockaddr)
252 memset(sockaddr, 0, sizeof(*sockaddr));
253 sockaddr->type.sin6.sin6_family = AF_INET6;
254 #ifdef ISC_PLATFORM_HAVESALEN
255 sockaddr->type.sin6.sin6_len = sizeof(sockaddr->type.sin6);
257 sockaddr->type.sin6.sin6_addr = in6addr_any;
258 sockaddr->type.sin6.sin6_port = 0;
259 sockaddr->length = sizeof(sockaddr->type.sin6);
260 ISC_LINK_INIT(sockaddr, link);
264 isc_sockaddr_fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina,
267 memset(sockaddr, 0, sizeof(*sockaddr));
268 sockaddr->type.sin.sin_family = AF_INET;
269 #ifdef ISC_PLATFORM_HAVESALEN
270 sockaddr->type.sin.sin_len = sizeof(sockaddr->type.sin);
272 sockaddr->type.sin.sin_addr = *ina;
273 sockaddr->type.sin.sin_port = htons(port);
274 sockaddr->length = sizeof(sockaddr->type.sin);
275 ISC_LINK_INIT(sockaddr, link);
279 isc_sockaddr_anyofpf(isc_sockaddr_t *sockaddr, int pf) {
282 isc_sockaddr_any(sockaddr);
285 isc_sockaddr_any6(sockaddr);
293 isc_sockaddr_fromin6(isc_sockaddr_t *sockaddr, const struct in6_addr *ina6,
296 memset(sockaddr, 0, sizeof(*sockaddr));
297 sockaddr->type.sin6.sin6_family = AF_INET6;
298 #ifdef ISC_PLATFORM_HAVESALEN
299 sockaddr->type.sin6.sin6_len = sizeof(sockaddr->type.sin6);
301 sockaddr->type.sin6.sin6_addr = *ina6;
302 sockaddr->type.sin6.sin6_port = htons(port);
303 sockaddr->length = sizeof(sockaddr->type.sin6);
304 ISC_LINK_INIT(sockaddr, link);
308 isc_sockaddr_v6fromin(isc_sockaddr_t *sockaddr, const struct in_addr *ina,
311 memset(sockaddr, 0, sizeof(*sockaddr));
312 sockaddr->type.sin6.sin6_family = AF_INET6;
313 #ifdef ISC_PLATFORM_HAVESALEN
314 sockaddr->type.sin6.sin6_len = sizeof(sockaddr->type.sin6);
316 sockaddr->type.sin6.sin6_addr.s6_addr[10] = 0xff;
317 sockaddr->type.sin6.sin6_addr.s6_addr[11] = 0xff;
318 memcpy(&sockaddr->type.sin6.sin6_addr.s6_addr[12], ina, 4);
319 sockaddr->type.sin6.sin6_port = htons(port);
320 sockaddr->length = sizeof(sockaddr->type.sin6);
321 ISC_LINK_INIT(sockaddr, link);
325 isc_sockaddr_pf(const isc_sockaddr_t *sockaddr) {
328 * Get the protocol family of 'sockaddr'.
331 #if (AF_INET == PF_INET && AF_INET6 == PF_INET6)
333 * Assume that PF_xxx == AF_xxx for all AF and PF.
335 return (sockaddr->type.sa.sa_family);
337 switch (sockaddr->type.sa.sa_family) {
343 FATAL_ERROR(__FILE__, __LINE__,
344 isc_msgcat_get(isc_msgcat, ISC_MSGSET_SOCKADDR,
345 ISC_MSG_UNKNOWNFAMILY,
346 "unknown address family: %d"),
347 (int)sockaddr->type.sa.sa_family);
353 isc_sockaddr_fromnetaddr(isc_sockaddr_t *sockaddr, const isc_netaddr_t *na,
356 memset(sockaddr, 0, sizeof(*sockaddr));
357 sockaddr->type.sin.sin_family = na->family;
358 switch (na->family) {
360 sockaddr->length = sizeof(sockaddr->type.sin);
361 #ifdef ISC_PLATFORM_HAVESALEN
362 sockaddr->type.sin.sin_len = sizeof(sockaddr->type.sin);
364 sockaddr->type.sin.sin_addr = na->type.in;
365 sockaddr->type.sin.sin_port = htons(port);
368 sockaddr->length = sizeof(sockaddr->type.sin6);
369 #ifdef ISC_PLATFORM_HAVESALEN
370 sockaddr->type.sin6.sin6_len = sizeof(sockaddr->type.sin6);
372 memcpy(&sockaddr->type.sin6.sin6_addr, &na->type.in6, 16);
373 #ifdef ISC_PLATFORM_HAVESCOPEID
374 sockaddr->type.sin6.sin6_scope_id = isc_netaddr_getzone(na);
376 sockaddr->type.sin6.sin6_port = htons(port);
381 ISC_LINK_INIT(sockaddr, link);
385 isc_sockaddr_setport(isc_sockaddr_t *sockaddr, in_port_t port) {
386 switch (sockaddr->type.sa.sa_family) {
388 sockaddr->type.sin.sin_port = htons(port);
391 sockaddr->type.sin6.sin6_port = htons(port);
394 FATAL_ERROR(__FILE__, __LINE__,
395 isc_msgcat_get(isc_msgcat, ISC_MSGSET_SOCKADDR,
396 ISC_MSG_UNKNOWNFAMILY,
397 "unknown address family: %d"),
398 (int)sockaddr->type.sa.sa_family);
403 isc_sockaddr_getport(const isc_sockaddr_t *sockaddr) {
406 switch (sockaddr->type.sa.sa_family) {
408 port = ntohs(sockaddr->type.sin.sin_port);
411 port = ntohs(sockaddr->type.sin6.sin6_port);
414 FATAL_ERROR(__FILE__, __LINE__,
415 isc_msgcat_get(isc_msgcat, ISC_MSGSET_SOCKADDR,
416 ISC_MSG_UNKNOWNFAMILY,
417 "unknown address family: %d"),
418 (int)sockaddr->type.sa.sa_family);
425 isc_sockaddr_ismulticast(const isc_sockaddr_t *sockaddr) {
426 isc_netaddr_t netaddr;
428 isc_netaddr_fromsockaddr(&netaddr, sockaddr);
429 return (isc_netaddr_ismulticast(&netaddr));
433 isc_sockaddr_isexperimental(const isc_sockaddr_t *sockaddr) {
434 isc_netaddr_t netaddr;
436 if (sockaddr->type.sa.sa_family == AF_INET) {
437 isc_netaddr_fromsockaddr(&netaddr, sockaddr);
438 return (isc_netaddr_isexperimental(&netaddr));
444 isc_sockaddr_issitelocal(const isc_sockaddr_t *sockaddr) {
445 isc_netaddr_t netaddr;
447 if (sockaddr->type.sa.sa_family == AF_INET6) {
448 isc_netaddr_fromsockaddr(&netaddr, sockaddr);
449 return (isc_netaddr_issitelocal(&netaddr));
455 isc_sockaddr_islinklocal(const isc_sockaddr_t *sockaddr) {
456 isc_netaddr_t netaddr;
458 if (sockaddr->type.sa.sa_family == AF_INET6) {
459 isc_netaddr_fromsockaddr(&netaddr, sockaddr);
460 return (isc_netaddr_islinklocal(&netaddr));