mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
/*
|
|
* ++Copyright++ 1985, 1988, 1993
|
|
* -
|
|
* Copyright (c) 1985, 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
* -
|
|
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies, and that
|
|
* the name of Digital Equipment Corporation not be used in advertising or
|
|
* publicity pertaining to distribution of the document or software without
|
|
* specific, written prior permission.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
|
|
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
|
|
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
* -
|
|
* --Copyright--
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <arpa/nameser.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <netdb.h>
|
|
#include <resolv.h>
|
|
#include <ctype.h>
|
|
#include <syslog.h>
|
|
|
|
typedef union {
|
|
int32_t al;
|
|
char ac;
|
|
} align;
|
|
|
|
void
|
|
_map_v4v6_address(const char *src, char *dst)
|
|
{
|
|
u_char *p = (u_char *)dst;
|
|
char tmp[NS_INADDRSZ];
|
|
int i;
|
|
|
|
/* Stash a temporary copy so our caller can update in place. */
|
|
memcpy(tmp, src, NS_INADDRSZ);
|
|
/* Mark this ipv6 addr as a mapped ipv4. */
|
|
for (i = 0; i < 10; i++)
|
|
*p++ = 0x00;
|
|
*p++ = 0xff;
|
|
*p++ = 0xff;
|
|
/* Retrieve the saved copy and we're done. */
|
|
memcpy((void*)p, tmp, NS_INADDRSZ);
|
|
}
|
|
|
|
void
|
|
_map_v4v6_hostent(struct hostent *hp, char **bpp, char *ep) {
|
|
char **ap;
|
|
|
|
if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)
|
|
return;
|
|
hp->h_addrtype = AF_INET6;
|
|
hp->h_length = IN6ADDRSZ;
|
|
for (ap = hp->h_addr_list; *ap; ap++) {
|
|
int i = (u_long)*bpp % sizeof(align);
|
|
|
|
if (i != 0)
|
|
i = sizeof(align) - i;
|
|
|
|
if ((ep - *bpp) < (i + IN6ADDRSZ)) {
|
|
/* Out of memory. Truncate address list here. */
|
|
*ap = NULL;
|
|
return;
|
|
}
|
|
*bpp += i;
|
|
_map_v4v6_address(*ap, *bpp);
|
|
*ap = *bpp;
|
|
*bpp += IN6ADDRSZ;
|
|
}
|
|
}
|