1ccbfca64ae86ace521053773001cb995352f96fBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#include <sys/types.h>

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#include <sys/socket.h>

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#include <netinet/in.h>

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#include <stdio.h>

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#include <stdlib.h>

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#include <string.h>

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#include <lwres/lwres.h>

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister#include <lwres/netdb.h> /* XXX #include <netdb.h> */

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#include "assert_p.h"

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#ifndef INADDRSZ

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#define INADDRSZ 4

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#endif

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#ifndef IN6ADDRSZ

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#define IN6ADDRSZ 16

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#endif

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#ifndef IN6_IS_ADDR_V4COMPAT

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graffstatic const unsigned char in6addr_compat[12] = {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

0e3ad060581e366d3e682caf2dd5d9ea2e0f4893Bob Halley#define IN6_IS_ADDR_V4COMPAT(x) (!memcmp((x)->s6_addr, in6addr_compat, 12) && \

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley ((x)->s6_addr[12] != 0 || \

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley (x)->s6_addr[13] != 0 || \

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley (x)->s6_addr[14] != 0 || \

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley ((x)->s6_addr[15] != 0 && \

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley (x)->s6_addr[15] != 1)))

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#endif

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#ifndef IN6_IS_ADDR_V4MAPPED

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#define IN6_IS_ADDR_V4MAPPED(x) (!memcmp((x)->s6_addr, in6addr_mapped, 12))

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#endif

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleystatic const unsigned char in6addr_mapped[12] = {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleystatic int scan_interfaces(int *, int *);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleystatic struct hostent * copyandmerge(struct hostent *, struct hostent *,

0e3ad060581e366d3e682caf2dd5d9ea2e0f4893Bob Halley int, int *);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleystatic struct hostent * hostfromaddr(lwres_gnbaresponse_t *addr, int af,

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley const void *src);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleystatic struct hostent * hostfromname(lwres_gabnresponse_t *name, int af);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halleystruct hostent *

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleygetipnodebyname(const char *name, int af, int flags, int *error_num) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley int have_v4 = 1, have_v6 = 1;

0e3ad060581e366d3e682caf2dd5d9ea2e0f4893Bob Halley struct in_addr in4;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley struct in6_addr in6;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley struct hostent he, *he1 = NULL, *he2 = NULL, *he3 = NULL;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley int v4 = 0, v6 = 0;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley int tmp_err;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley lwres_context_t *lwrctx = NULL;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley lwres_gabnresponse_t *by = NULL;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley int n;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley /* If we care about active interfaces then check. */

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if ((flags & AI_ADDRCONFIG) != 0)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (scan_interfaces(&have_v4, &have_v6) == -1) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *error_num = NO_RECOVERY;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley return (NULL);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley /* Check for literal address. */

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if ((v4 = inet_pton(AF_INET, name, &in4)) != 1)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley v6 = inet_pton(AF_INET6, name, &in6);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley /* Impossible combination? */

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if ((af == AF_INET6 && (flags & AI_V4MAPPED) == 0 && v4 == 1) ||

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (af == AF_INET && v6 == 1) ||

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (have_v4 == 0 && v4 == 1) ||

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley (have_v6 == 0 && v6 == 1) ||

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (have_v4 == 0 && af == AF_INET) ||

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (have_v6 == 0 && af == AF_INET6 &&

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (((flags & AI_V4MAPPED) != 0 && have_v4) ||

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (flags & AI_V4MAPPED) == 0))) {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley *error_num = HOST_NOT_FOUND;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley return (NULL);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley /* Literal address? */

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (v4 == 1 || v6 == 1) {

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister char *addr_list[2];

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister char *aliases[1];

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister he.h_name = (char *)name;

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister he.h_addr_list = addr_list;

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister he.h_addr_list[0] = (v4 == 1) ? (char *)&in4 : (char *)&in6;

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister he.h_addr_list[1] = NULL;

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister he.h_aliases = aliases;

d549c3734869b48e740c64e80890bcb6f3ce672cJames Brister he.h_aliases[0] = NULL;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley he.h_length = (v4 == 1) ? INADDRSZ : IN6ADDRSZ;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley he.h_addrtype = (v4 == 1) ? AF_INET : AF_INET6;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley return (copyandmerge(&he, NULL, af, error_num));

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley n = lwres_context_create(&lwrctx, NULL, NULL, NULL);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (n != 0) {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley *error_num = NO_RECOVERY;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley goto cleanup;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley tmp_err = NO_RECOVERY;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (have_v6 && af == AF_INET6) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley n = lwres_getaddrsbyname(lwrctx, name, LWRES_ADDRTYPE_V6, &by);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (n == 0) {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley he1 = hostfromname(by, AF_INET6);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley lwres_gabnresponse_free(lwrctx, &by);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (he1 == NULL) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *error_num = NO_RECOVERY;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley goto cleanup;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley } else {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley tmp_err = HOST_NOT_FOUND;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (have_v4 &&

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley ((af == AF_INET) ||

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (af == AF_INET6 && (flags & AI_V4MAPPED) != 0 &&

1ccbfca64ae86ace521053773001cb995352f96fBob Halley (he1 == NULL || (flags & AI_ALL) != 0)))) {

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley n = lwres_getaddrsbyname(lwrctx, name, LWRES_ADDRTYPE_V4, &by);

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley if (n == 0) {

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley he2 = hostfromname(by, AF_INET);

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley lwres_gabnresponse_free(lwrctx, &by);

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley if (he2 == NULL) {

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley *error_num = NO_RECOVERY;

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley goto cleanup;

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley }

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley } else if (he1 == NULL) {

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley *error_num = HOST_NOT_FOUND;

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley goto cleanup;

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley }

b3e2e7c4d6b5c5ee90ba5bb775d635834dccec81Bob Halley } else

a99979c686ae04efd55ba8f0aacf32493b4aa7faBob Halley *error_num = tmp_err;

a99979c686ae04efd55ba8f0aacf32493b4aa7faBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley he3 = copyandmerge(he1, he2, af, error_num);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley cleanup:

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (he1 != NULL)

a99979c686ae04efd55ba8f0aacf32493b4aa7faBob Halley freehostent(he1);

a99979c686ae04efd55ba8f0aacf32493b4aa7faBob Halley if (he2 != NULL)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley freehostent(he2);

a99979c686ae04efd55ba8f0aacf32493b4aa7faBob Halley if (lwrctx != NULL)

a99979c686ae04efd55ba8f0aacf32493b4aa7faBob Halley lwres_context_destroy(&lwrctx);

48481c9b6e19501457bcbc2995555412f352b99fBob Halley return (he3);

48481c9b6e19501457bcbc2995555412f352b99fBob Halley}

48481c9b6e19501457bcbc2995555412f352b99fBob Halley

48481c9b6e19501457bcbc2995555412f352b99fBob Halleystruct hostent *

48481c9b6e19501457bcbc2995555412f352b99fBob Halleygetipnodebyaddr(const void *src, size_t len, int af, int *error_num) {

48481c9b6e19501457bcbc2995555412f352b99fBob Halley struct hostent *he1, *he2;

48481c9b6e19501457bcbc2995555412f352b99fBob Halley lwres_context_t *lwrctx = NULL;

48481c9b6e19501457bcbc2995555412f352b99fBob Halley lwres_gnbaresponse_t *by = NULL;

48481c9b6e19501457bcbc2995555412f352b99fBob Halley int n;

48481c9b6e19501457bcbc2995555412f352b99fBob Halley

48481c9b6e19501457bcbc2995555412f352b99fBob Halley

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff /* Sanity Checks. */

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley if (src == NULL) {

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley *error_num = NO_RECOVERY;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley return (NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley }

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley switch (af) {

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley case AF_INET:

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley if (len != INADDRSZ) {

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley *error_num = NO_RECOVERY;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley return (NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley }

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley break;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley case AF_INET6:

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff if (len != IN6ADDRSZ) {

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley *error_num = NO_RECOVERY;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley return (NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley }

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley break;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley default:

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley *error_num = NO_RECOVERY;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley return (NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley }

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley /*

bad8294771671374e811afac79a20cc6927e3e2fBob Halley if ((af == AF_INET6 && IN6_IS_ADDR_V4COMPAT((struct in6_addr *)src)) ||

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff (af == AF_INET6 && IN6_IS_ADDR_V4MAPPED((struct in6_addr *)src)) ||

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley (af == AF_INET)) {

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley const unsigned char *cp = src;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley if (af == AF_INET6)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley cp += 12;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley n = lwres_context_create(&lwrctx, NULL, NULL, NULL);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (n == 0)

b03b67a6f1ea2966367e7beb2ef276ed6a1d3f92Bob Halley n = lwres_getnamebyaddr(lwrctx, LWRES_ADDRTYPE_V4,

b03b67a6f1ea2966367e7beb2ef276ed6a1d3f92Bob Halley INADDRSZ, cp, &by);

b03b67a6f1ea2966367e7beb2ef276ed6a1d3f92Bob Halley if (n != 0) {

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley lwres_context_destroy(&lwrctx);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley *error_num = HOST_NOT_FOUND;

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley return (NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley }

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley he1 = hostfromaddr(by, AF_INET, cp);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley lwres_gnbaresponse_free(lwrctx, &by);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley lwres_context_destroy(&lwrctx);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley if (af != AF_INET6)

27ffc5a69779c3c7224580a89aa2bf0a3ff8c16dBob Halley return (he1);

27ffc5a69779c3c7224580a89aa2bf0a3ff8c16dBob Halley

27ffc5a69779c3c7224580a89aa2bf0a3ff8c16dBob Halley /* Convert from AF_INET to AF_INET6 */

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley he2 = copyandmerge(he1, NULL, af, error_num);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley freehostent(he1);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley if (he2 == NULL)

27ffc5a69779c3c7224580a89aa2bf0a3ff8c16dBob Halley return (NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley /*

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley memcpy(he2->h_addr, src, len);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley return (he2);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley }

b03b67a6f1ea2966367e7beb2ef276ed6a1d3f92Bob Halley

b03b67a6f1ea2966367e7beb2ef276ed6a1d3f92Bob Halley /*

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson if (memcmp((struct in6_addr *)src, &in6addr_any, IN6ADDRSZ) == 0) {

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson *error_num = HOST_NOT_FOUND;

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson return (NULL);

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson }

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson n = lwres_context_create(&lwrctx, NULL, NULL, NULL);

7d44d8aacda98eb2b526af34757a6bbcc97cd388Bob Halley if (n == 0)

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson n = lwres_getnamebyaddr(lwrctx, LWRES_ADDRTYPE_V6, IN6ADDRSZ,

5fc7ba3e1ac5d72239e9971e0f469dd5796738f9Andreas Gustafsson src, &by);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (n != 0) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *error_num = HOST_NOT_FOUND;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley return (NULL);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley he1 = hostfromaddr(by, AF_INET6, src);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley lwres_gnbaresponse_free(lwrctx, &by);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (he1 == NULL)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *error_num = NO_RECOVERY;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley lwres_context_destroy(&lwrctx);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley return (he1);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley}

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleyfreehostent(struct hostent *he) {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley char **cpp;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley int names = 1;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley int addresses = 1;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff free(he->h_name);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley cpp = he->h_addr_list;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley while (*cpp != NULL) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley free(*cpp);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *cpp = NULL;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley cpp++;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley addresses++;

0e3ad060581e366d3e682caf2dd5d9ea2e0f4893Bob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley cpp = he->h_aliases;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley while (*cpp != NULL) {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley free(*cpp);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley cpp++;

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley names++;

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley }

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley free(he->h_aliases);

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley free(he->h_addr_list);

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley free(he);

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley}

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley

b8862d5130b88e7b1a257997d7909f769716d51cBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halleystatic int

1ccbfca64ae86ace521053773001cb995352f96fBob Halleyscan_interfaces(int *have_v4, int *have_v6) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#if 1

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *have_v4 = *have_v6 = 1;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley return (0);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#else

1ccbfca64ae86ace521053773001cb995352f96fBob Halley struct ifconf ifc;

0e3ad060581e366d3e682caf2dd5d9ea2e0f4893Bob Halley struct ifreq ifreq;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley struct in_addr in4;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley struct in6_addr in6;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley char *buf = NULL, *cp, *cplim;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley static int bufsiz = 4095;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley int s, cpsize, n;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley /* Set to zero. Used as loop terminators below. */

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *have_v4 = *have_v6 = 0;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley /* Get interface list from system. */

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff goto err_ret;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley /*

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley for (;;) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley buf = malloc(bufsiz);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (buf == NULL)

1ccbfca64ae86ace521053773001cb995352f96fBob Halley goto err_ret;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley ifc.ifc_len = bufsiz;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley ifc.ifc_buf = buf;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#ifdef IRIX_EMUL_IOCTL_SIOCGIFCONF

1ccbfca64ae86ace521053773001cb995352f96fBob Halley /*

63e6086ef99eca768a4cd69871038181251905bbBob Halley if (emul_ioctl(&ifc) >= 0)

ced5499494f8afba75c056eb2f3933de24a5f360Bob Halley break;

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley#else

d2615909402705135d0560ad9d11f4302053c17cBob Halley if ((n = ioctl(s, SIOCGIFCONF, (char *)&ifc)) != -1) {

ced5499494f8afba75c056eb2f3933de24a5f360Bob Halley /*

e7e2e948e37a0eeb93b0d4f2390f38ed2d9dcd82Bob Halley if (ifc.ifc_len + 2 * sizeof(ifreq) < bufsiz)

739ccd81b011ec3f7b8029000704b1a925df7e65Bob Halley break;

e7e2e948e37a0eeb93b0d4f2390f38ed2d9dcd82Bob Halley }

e7e2e948e37a0eeb93b0d4f2390f38ed2d9dcd82Bob Halley#endif

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley if ((n == -1) && errno != EINVAL)

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley goto err_ret;

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley

e7e2e948e37a0eeb93b0d4f2390f38ed2d9dcd82Bob Halley if (bufsiz > 1000000)

63e6086ef99eca768a4cd69871038181251905bbBob Halley goto err_ret;

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley

ced5499494f8afba75c056eb2f3933de24a5f360Bob Halley free(buf);

ced5499494f8afba75c056eb2f3933de24a5f360Bob Halley bufsiz += 4096;

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff }

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley /* Parse system's interface list. */

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley cplim = buf + ifc.ifc_len; /* skip over if's with big ifr_addr's */

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley for (cp = buf;

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley (*have_v4 == 0 || *have_v6 == 0) && cp < cplim;

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley cp += cpsize) {

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley memcpy(&ifreq, cp, sizeof ifreq);

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#ifdef HAVE_SA_LEN

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#ifdef FIX_ZERO_SA_LEN

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley if (ifreq.ifr_addr.sa_len == 0)

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley ifreq.ifr_addr.sa_len = IN6ADDRSZ;

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#endif

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#ifdef HAVE_MINIMUM_IFREQ

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley cpsize = sizeof ifreq;

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley if (ifreq.ifr_addr.sa_len > sizeof (struct sockaddr))

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley cpsize += (int)ifreq.ifr_addr.sa_len -

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley (int)(sizeof (struct sockaddr));

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#else

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley cpsize = sizeof ifreq.ifr_name + ifreq.ifr_addr.sa_len;

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#endif /* HAVE_MINIMUM_IFREQ */

9acbfdb6a2f70d84107ccd99b24a2e523a48259bBob Halley#elif defined SIOCGIFCONF_ADDR

1ccbfca64ae86ace521053773001cb995352f96fBob Halley cpsize = sizeof ifreq;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley#else

1ccbfca64ae86ace521053773001cb995352f96fBob Halley cpsize = sizeof ifreq.ifr_name;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley /* XXX maybe this should be a hard error? */

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (ioctl(s, SIOCGIFADDR, (char *)&ifreq) < 0)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley continue;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley#endif

1ccbfca64ae86ace521053773001cb995352f96fBob Halley switch (ifreq.ifr_addr.sa_family) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley case AF_INET:

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (*have_v4 == 0) {

1ccbfca64ae86ace521053773001cb995352f96fBob Halley memcpy(&in4,

1ccbfca64ae86ace521053773001cb995352f96fBob Halley &((struct sockaddr_in *)

1ccbfca64ae86ace521053773001cb995352f96fBob Halley &ifreq.ifr_addr)->sin_addr, sizeof in4);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (in4.s_addr == INADDR_ANY)

1ccbfca64ae86ace521053773001cb995352f96fBob Halley break;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley n = ioctl(s, SIOCGIFFLAGS, (char *)&ifreq);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (n < 0)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley break;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if ((ifreq.ifr_flags & IFF_UP) == 0)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley break;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley *have_v4 = 1;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley break;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley case AF_INET6:

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (*have_v6 == 0) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley memcpy(&in6,

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley &((struct sockaddr_in6 *)

1ccbfca64ae86ace521053773001cb995352f96fBob Halley &ifreq.ifr_addr)->sin6_addr, sizeof in6);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (memcmp(&in6, &in6addr_any, sizeof in6) == 0)

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff break;

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley n = ioctl(s, SIOCGIFFLAGS, (char *)&ifreq);

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley if (n < 0)

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley break;

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley if ((ifreq.ifr_flags & IFF_UP) == 0)

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley break;

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley *have_v6 = 1;

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley }

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley break;

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley }

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley }

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley if (buf != NULL)

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley free(buf);

6e8ec359a45b7e991d7bcc97ed8547eac725a506Bob Halley close(s);

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley return (0);

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley err_ret:

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley if (buf != NULL)

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley free(buf);

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley if (s != -1)

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley close(s);

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley return (-1);

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley#endif

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley}

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley

097c31fdea44383b7ce95345a66489040ad5e333Bob Halleystatic struct hostent *

097c31fdea44383b7ce95345a66489040ad5e333Bob Halleycopyandmerge(struct hostent *he1, struct hostent *he2, int af, int *error_num) {

097c31fdea44383b7ce95345a66489040ad5e333Bob Halley struct hostent *he = NULL;

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley int addresses = 1; /* NULL terminator */

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley int names = 1; /* NULL terminator */

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley int len = 0;

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley char **cpp, **npp;

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff

6bb7b678f50a61dccad0bb3db4c26f73b59d8c16Bob Halley /*

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley if (he1 != NULL) {

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley cpp = he1->h_addr_list;

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley while (*cpp != NULL) {

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley addresses++;

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley cpp++;

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley }

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley cpp = he1->h_aliases;

6bb7b678f50a61dccad0bb3db4c26f73b59d8c16Bob Halley while (*cpp != NULL) {

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley names++;

8c65ae482a50bed3184026301c6f99f32a683dbfBob Halley cpp++;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (he2 != NULL) {

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff cpp = he2->h_addr_list;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley while (*cpp != NULL) {

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley addresses++;

0b157747b398ab59f42f584adc70a6c97d771abeBob Halley cpp++;

0b157747b398ab59f42f584adc70a6c97d771abeBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (he1 == NULL) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley cpp = he2->h_aliases;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley while (*cpp != NULL) {

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley names++;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley cpp++;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (addresses == 1) {

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley *error_num = NO_ADDRESS;

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley return (NULL);

0b157747b398ab59f42f584adc70a6c97d771abeBob Halley }

0b157747b398ab59f42f584adc70a6c97d771abeBob Halley

0b157747b398ab59f42f584adc70a6c97d771abeBob Halley he = malloc(sizeof *he);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (he == NULL)

732e0731dec1922747bb3b3147cf2c3d16b22eaaBob Halley goto no_recovery;

0b157747b398ab59f42f584adc70a6c97d771abeBob Halley

1ccbfca64ae86ace521053773001cb995352f96fBob Halley he->h_addr_list = malloc(sizeof(char *) * (addresses));

1ccbfca64ae86ace521053773001cb995352f96fBob Halley if (he->h_addr_list == NULL)

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff goto cleanup0;

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley memset(he->h_addr_list, 0, sizeof(char *) * (addresses));

63e6086ef99eca768a4cd69871038181251905bbBob Halley

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley /* copy addresses */

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley npp = he->h_addr_list;

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley if (he1 != NULL) {

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley cpp = he1->h_addr_list;

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley while (*cpp != NULL) {

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley *npp = malloc((af == AF_INET) ? INADDRSZ : IN6ADDRSZ);

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley if (*npp == NULL)

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley goto cleanup1;

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley /* convert to mapped if required */

63e6086ef99eca768a4cd69871038181251905bbBob Halley if (af == AF_INET6 && he1->h_addrtype == AF_INET) {

63e6086ef99eca768a4cd69871038181251905bbBob Halley memcpy(*npp, in6addr_mapped,

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley sizeof in6addr_mapped);

efe6d8f0665b466052910e8efd4b031dc048f196Bob Halley memcpy(*npp + sizeof in6addr_mapped, *cpp,

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff INADDRSZ);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley } else {

7f705ac9a20e82264113e561a515d54dde5bcea3Bob Halley memcpy(*npp, *cpp,

64e829fffb8d95e7507079767ef68327b4a7b4caBob Halley (af == AF_INET) ? INADDRSZ : IN6ADDRSZ);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley cpp++;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley npp++;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (he2 != NULL) {

5c6d49484bf5600e3c2bcb3165e168bd058d167bBob Halley cpp = he2->h_addr_list;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley while (*cpp != NULL) {

64e829fffb8d95e7507079767ef68327b4a7b4caBob Halley *npp = malloc((af == AF_INET) ? INADDRSZ : IN6ADDRSZ);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley if (*npp == NULL)

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley goto cleanup1;

302d9bebb54ad8c5a3e2108698215a0e98e06a32Bob Halley /* convert to mapped if required */

7f705ac9a20e82264113e561a515d54dde5bcea3Bob Halley if (af == AF_INET6 && he2->h_addrtype == AF_INET) {

7f705ac9a20e82264113e561a515d54dde5bcea3Bob Halley memcpy(*npp, in6addr_mapped,

7f705ac9a20e82264113e561a515d54dde5bcea3Bob Halley sizeof in6addr_mapped);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley memcpy(*npp + sizeof in6addr_mapped, *cpp,

7f705ac9a20e82264113e561a515d54dde5bcea3Bob Halley INADDRSZ);

64e829fffb8d95e7507079767ef68327b4a7b4caBob Halley } else {

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley memcpy(*npp, *cpp,

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley (af == AF_INET) ? INADDRSZ : IN6ADDRSZ);

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff }

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley cpp++;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley npp++;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley }

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley }

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley he->h_aliases = malloc(sizeof(char *) * (names));

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley if (he->h_aliases == NULL)

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley goto cleanup1;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley memset(he->h_aliases, 0, sizeof(char *) * (names));

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley /* copy aliases */

b687c057fbd8b88738300a5038538e589677fe18Bob Halley npp = he->h_aliases;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley cpp = (he1 != NULL) ? he1->h_aliases : he2->h_aliases;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley while (*cpp != NULL) {

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley len = strlen (*cpp) + 1;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley *npp = malloc(len);

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley if (*npp == NULL)

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley goto cleanup2;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley strcpy(*npp, *cpp);

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley npp++;

a7e185ff3f7db73e282bf53b9f84a95ff8f8cb27Bob Halley cpp++;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley }

1ccbfca64ae86ace521053773001cb995352f96fBob Halley

3ddd814a97de1d152ba0913c592d6e6dc83d38a6Michael Graff /* copy hostname */

1ccbfca64ae86ace521053773001cb995352f96fBob Halley he->h_name = malloc(strlen((he1 != NULL) ?

6cac2e0f7a1ab207a64127bef11bb93404523c15Brian Wellington he1->h_name : he2->h_name) + 1);

6cac2e0f7a1ab207a64127bef11bb93404523c15Brian Wellington if (he->h_name == NULL)

1ccbfca64ae86ace521053773001cb995352f96fBob Halley goto cleanup2;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley strcpy(he->h_name, (he1 != NULL) ? he1->h_name : he2->h_name);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley /* set address type and length */

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley he->h_addrtype = af;

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley he->h_length = (af == AF_INET) ? INADDRSZ : IN6ADDRSZ;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley return(he);

62837b832f6a9999976d607eb0a9125bbbbb138bBob Halley

a3e2ec2dfec1a8171eaf584bb957b80c04de1e0bBob Halley cleanup2:

a3e2ec2dfec1a8171eaf584bb957b80c04de1e0bBob Halley cpp = he->h_aliases;

1ccbfca64ae86ace521053773001cb995352f96fBob Halley while (*cpp != NULL) {

6cac2e0f7a1ab207a64127bef11bb93404523c15Brian Wellington free(*cpp);

1ccbfca64ae86ace521053773001cb995352f96fBob Halley cpp++;

}

free(he->h_aliases);

cleanup1:

cpp = he->h_addr_list;

while (*cpp != NULL) {

free(*cpp);

*cpp = NULL;

cpp++;

}

free(he->h_addr_list);

cleanup0:

free(he);

no_recovery:

*error_num = NO_RECOVERY;

return (NULL);

}

static struct hostent *

hostfromaddr(lwres_gnbaresponse_t *addr, int af, const void *src) {

struct hostent *he;

int i;

he = malloc(sizeof *he);

if (he == NULL)

goto cleanup;

memset(he, 0, sizeof(*he));

/* Set family and length */

he->h_addrtype = af;

switch (af) {

case AF_INET:

he->h_length = INADDRSZ;

break;

case AF_INET6:

he->h_length = IN6ADDRSZ;

break;

default:

INSIST(0);

}

/* copy name */

he->h_name = strdup(addr->realname);

if (he->h_name == NULL)

goto cleanup;

/* copy aliases */

he->h_aliases = malloc(sizeof(char *) * (addr->naliases + 1));

for (i = 0 ; i < addr->naliases; i++) {

he->h_aliases[i] = strdup(addr->aliases[i]);

if (he->h_aliases[i] == NULL)

goto cleanup;

}

he->h_aliases[i] = NULL;

/* copy address */

he->h_addr_list = malloc(sizeof(char *) * 2);

if (he->h_addr_list == NULL)

goto cleanup;

he->h_addr_list[0] = malloc(he->h_length);

if (he->h_addr_list[0] == NULL)

goto cleanup;

memcpy(he->h_addr_list[0], src, he->h_length);

he->h_addr_list[1] = NULL;

return (he);

cleanup:

if (he != NULL && he->h_addr_list != NULL) {

for (i = 0; he->h_addr_list[i] != NULL; i++)

free(he->h_addr_list[i]);

free(he->h_addr_list);

}

if (he != NULL && he->h_aliases != NULL) {

for (i = 0; he->h_aliases[i] != NULL; i++)

free(he->h_aliases[i]);

free(he->h_aliases);

}

if (he != NULL && he->h_name != NULL)

free(he->h_name);

free(he);

return (NULL);

}

static struct hostent *

hostfromname(lwres_gabnresponse_t *name, int af) {

struct hostent *he;

int i;

he = malloc(sizeof *he);

if (he == NULL)

goto cleanup;

memset(he, 0, sizeof(*he));

/* Set family and length */

he->h_addrtype = af;

switch (af) {

case AF_INET:

he->h_length = INADDRSZ;

break;

case AF_INET6:

he->h_length = IN6ADDRSZ;

break;

default:

INSIST(0);

}

/* copy name */

he->h_name = strdup(name->realname);

if (he->h_name == NULL)

goto cleanup;

/* copy aliases */

he->h_aliases = malloc(sizeof(char *) * (name->naliases + 1));

for (i = 0 ; i < name->naliases; i++) {

he->h_aliases[i] = strdup(name->aliases[i]);

if (he->h_aliases[i] == NULL)

goto cleanup;

}

he->h_aliases[i] = NULL;

/* copy addresses */

he->h_addr_list = malloc(sizeof(char *) * (name->naddrs + 1));

for (i = 0 ; i < name->naddrs; i++) {

he->h_addr_list[i] = malloc(he->h_length);

if (he->h_addr_list[i] == NULL)

goto cleanup;

memcpy(he->h_addr_list[i], name->addrs[i].address, he->h_length);

}

he->h_addr_list[i] = NULL;

return (he);

cleanup:

if (he != NULL && he->h_addr_list != NULL) {

for (i = 0; he->h_addr_list[i] != NULL; i++)

free(he->h_addr_list[i]);

free(he->h_addr_list);

}

if (he != NULL && he->h_aliases != NULL) {

for (i = 0; he->h_aliases[i] != NULL; i++)

free(he->h_aliases[i]);

free(he->h_aliases);

}

if (he != NULL && he->h_name != NULL)

free(he->h_name);

free(he);

return (NULL);

}