Add Socket Libraries.
Add Posix functions for porting compatibility. Fix compliance issues with ISO/IEC 9899:199409 New Functions: setenv(), fparseln(), GetFileNameFromPath(), rename(), realpath(), setprogname(), getprogname(), strlcat(), strlcpy(), strsep(), setitimer(), getitimer(), timegm(), getopt(), basename(), mkstemp(), ffs(), vsnprintf(), snprintf(), getpass(), usleep(), select(), writev(), strcasecmp(), getcwd(), chdir(), tcgetpgrp(), getpgrp(), gettimeofday(), bcopy(), git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12061 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
darylm503
207
StdLib/BsdSocketLib/gethostbyht.c
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207
StdLib/BsdSocketLib/gethostbyht.c
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/*-
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* Copyright (c) 1985, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Portions copyright (c) 1999, 2000
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* Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by the University of
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* California, Berkeley, Intel Corporation, and its contributors.
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*
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* 4. Neither the name of University, Intel Corporation, or their respective
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION AND
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* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS,
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* INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Portions Copyright (c) 1993 by Digital Equipment Corporation.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies, and that
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* the name of Digital Equipment Corporation not be used in advertising or
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* publicity pertaining to distribution of the document or software without
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* specific, written prior permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
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* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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* -
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* --Copyright--
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
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static char rcsid[] = "$Id: gethostbyht.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <errno.h>
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#include <string.h>
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#include <arpa/nameser.h> /* XXX */
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#include <resolv.h> /* XXX */
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#include "Socklib_internals.h"
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#define MAXALIASES 35
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static struct hostent host;
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static char *host_aliases[MAXALIASES];
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static char hostbuf[BUFSIZ+1];
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static FILE *hostf = NULL;
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static u_char host_addr[16]; /* IPv4 or IPv6 */
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static char *h_addr_ptrs[2];
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static int stayopen = 0;
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void
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_sethosthtent(int f)
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{
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if (!hostf)
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hostf = fopen(_PATH_HOSTS, "r" );
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else
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rewind(hostf);
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stayopen = f;
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}
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void
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_endhosthtent()
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{
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if (hostf && !stayopen) {
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(void) fclose(hostf);
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hostf = NULL;
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}
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}
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struct hostent *
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gethostent()
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{
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char *p;
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register char *cp, **q;
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int af, len;
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if (!hostf && ( NULL == (hostf = fopen(_PATH_HOSTS, "r" )))) {
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h_errno = NETDB_INTERNAL;
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return (NULL);
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}
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again:
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if ( NULL == (p = fgets(hostbuf, sizeof hostbuf, hostf))) {
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h_errno = HOST_NOT_FOUND;
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return (NULL);
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}
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if (*p == '#')
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goto again;
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if ( NULL == (cp = strpbrk(p, "#\n")))
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goto again;
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*cp = '\0';
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if ( NULL == (cp = strpbrk(p, " \t")))
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goto again;
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*cp++ = '\0';
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if (inet_pton(AF_INET6, p, host_addr) > 0) {
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af = AF_INET6;
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len = IN6ADDRSZ;
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} else if (inet_pton(AF_INET, p, host_addr) > 0) {
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if (_res.options & RES_USE_INET6) {
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_map_v4v6_address((char*)host_addr, (char*)host_addr);
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af = AF_INET6;
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len = IN6ADDRSZ;
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} else {
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af = AF_INET;
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len = INADDRSZ;
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}
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} else {
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goto again;
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}
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h_addr_ptrs[0] = (char *)host_addr;
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h_addr_ptrs[1] = NULL;
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host.h_addr_list = h_addr_ptrs;
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host.h_length = len;
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host.h_addrtype = af;
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while (*cp == ' ' || *cp == '\t')
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cp++;
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host.h_name = cp;
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q = host.h_aliases = host_aliases;
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if ((cp = strpbrk(cp, " \t\r")) != NULL)
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*cp++ = '\0';
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while (cp && *cp) {
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if (*cp == ' ' || *cp == '\t') {
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cp++;
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continue;
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}
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if (q < &host_aliases[MAXALIASES - 1])
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*q++ = cp;
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if ((cp = strpbrk(cp, " \t\r")) != NULL)
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*cp++ = '\0';
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}
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*q = NULL;
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h_errno = NETDB_SUCCESS;
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return (&host);
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}
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struct hostent *
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_gethostbyhtname(const char *name, int af)
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{
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register struct hostent *p;
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register char **cp;
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sethostent(0);
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while ((p = gethostent()) != NULL) {
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if (p->h_addrtype != af)
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continue;
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if (strcasecmp(p->h_name, name) == 0)
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break;
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for (cp = p->h_aliases; *cp != 0; cp++)
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if (strcasecmp(*cp, name) == 0)
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goto found;
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}
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found:
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endhostent();
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return (p);
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}
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struct hostent *
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_gethostbyhtaddr(const char *addr, int len, int af)
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{
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register struct hostent *p;
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sethostent(0);
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while ((p = gethostent()) != NULL)
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if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len))
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break;
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endhostent();
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return (p);
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}
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