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/* Distributed Checksum Clearinghouse
*
* Copyright (c) 2005 by Rhyolite Software
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE
* 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.
*
* Rhyolite Software DCC 1.2.74-1.10 $Revision$
*/
#include "dcc_defs.h"
/* convert IPv4 address to IPv6 */
void
dcc_ipv4toipv6(struct in6_addr *dst, const struct in_addr src)
{
/* do it in an order that allows dst==src */
dst->s6_addr32[3] = src.s_addr;
dst->s6_addr32[0] = 0;
dst->s6_addr32[1] = 0;
dst->s6_addr32[2] = htonl(0xffff);
}
/* try to convert IPv6 address to IPv4 */
u_char /* 1=did it */
dcc_ipv6toipv4(struct in_addr *dst, const struct in6_addr *src)
{
if (DCC_IN6_ADDR_V4MAPPED(src)) {
dst->s_addr = src->s6_addr32[3];
return 1;
}
if (src->s6_addr32[0] != 0
|| src->s6_addr32[1] != 0
|| src->s6_addr32[2] != 0)
return 0;
if (src->s6_addr32[3] == ntohl(1))
dst->s_addr = ntohl(0x7f000001);
else
dst->s_addr = src->s6_addr32[3];
return 1;
}
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