Fix a bug about the iSCSI DHCP dependency issue.

[mirror_edk2.git] / StdLib / BsdSocketLib / map_v4v6.c

/*\r
 * ++Copyright++ 1985, 1988, 1993\r
 * -\r
 * Copyright (c) 1985, 1988, 1993\r
 *    The Regents of the University of California.  All rights reserved.\r
 *\r
 * Portions copyright (c) 1999, 2000\r
 * Intel Corporation.\r
 * All rights reserved.\r
 * \r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * \r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * \r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * \r
 * 3. All advertising materials mentioning features or use of this software\r
 *    must display the following acknowledgement:\r
 * \r
 *    This product includes software developed by the University of\r
 *    California, Berkeley, Intel Corporation, and its contributors.\r
 * \r
 * 4. Neither the name of University, Intel Corporation, or their respective\r
 *    contributors may be used to endorse or promote products derived from\r
 *    this software without specific prior written permission.\r
 * \r
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION AND\r
 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,\r
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS\r
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS,\r
 * INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,\r
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\r
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\r
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\r
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\r
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
 * -\r
 * Portions Copyright (c) 1993 by Digital Equipment Corporation.\r
 * \r
 * Permission to use, copy, modify, and distribute this software for any\r
 * purpose with or without fee is hereby granted, provided that the above\r
 * copyright notice and this permission notice appear in all copies, and that\r
 * the name of Digital Equipment Corporation not be used in advertising or\r
 * publicity pertaining to distribution of the document or software without\r
 * specific, written prior permission.\r
 * \r
 * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL\r
 * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES\r
 * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT\r
 * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL\r
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR\r
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS\r
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS\r
 * SOFTWARE.\r
 * -\r
 * --Copyright--\r
 */\r
\r
#if defined(LIBC_SCCS) && !defined(lint)\r
static char sccsid[] = "@(#)gethostnamadr.c	8.1 (Berkeley) 6/4/93";\r
static char rcsid[] = "$Id: map_v4v6.c,v 1.1.1.1 2003/11/19 01:51:31 kyu3 Exp $";\r
#endif /* LIBC_SCCS and not lint */\r
\r
#include <sys/types.h>\r
#include <sys/param.h>\r
#include <sys/socket.h>\r
#include <netinet/in.h>\r
#include <arpa/inet.h>\r
#include <arpa/nameser.h>\r
\r
#include <stdio.h>\r
#include <string.h>\r
#include <netdb.h>\r
#include <resolv.h>\r
#include <ctype.h>\r
#include <errno.h>\r
#ifdef _ORG_FREEBSD_\r
#include <syslog.h>\r
#endif\r
#include "Socklib_internals.h"\r
\r
typedef union {\r
	int32_t al;\r
	char ac;\r
} align;\r
\r
void\r
_map_v4v6_address(const char *src, char *dst)\r
{\r
	u_char *p = (u_char *)dst;\r
	char tmp[INADDRSZ];\r
	int i;\r
\r
	/* Stash a temporary copy so our caller can update in place. */\r
	bcopy(src, tmp, INADDRSZ);\r
	/* Mark this ipv6 addr as a mapped ipv4. */\r
	for (i = 0; i < 10; i++)\r
		*p++ = 0x00;\r
	*p++ = 0xff;\r
	*p++ = 0xff;\r
	/* Retrieve the saved copy and we're done. */\r
	bcopy(tmp, (void*)p, INADDRSZ);\r
}\r
\r
void\r
_map_v4v6_hostent(struct hostent *hp, char **bpp, int *lenp)\r
{\r
	char **ap;\r
\r
	if (hp->h_addrtype != AF_INET || hp->h_length != INADDRSZ)\r
		return;\r
	hp->h_addrtype = AF_INET6;\r
	hp->h_length = IN6ADDRSZ;\r
	for (ap = hp->h_addr_list; *ap; ap++) {\r
		int i = (int)(sizeof(align) - ((size_t)*bpp % sizeof(align)));\r
\r
		if (*lenp < (i + IN6ADDRSZ)) {\r
			/* Out of memory.  Truncate address list here.  XXX */\r
			*ap = NULL;\r
			return;\r
		}\r
		*bpp += i;\r
		*lenp -= i;\r
		_map_v4v6_address(*ap, *bpp);\r
		*ap = *bpp;\r
		*bpp += IN6ADDRSZ;\r
		*lenp -= IN6ADDRSZ;\r
	}\r
}\r