/crypto/heimdal/lib/roken/getipnodebyname.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 83 lines · 41 code · 6 blank · 36 comment · 7 complexity · 2b5a1362df68887968beed4f757e159d MD5 · raw file
- /*
- * Copyright (c) 1999 Kungliga Tekniska Hรถgskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * 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.
- *
- * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
- */
- #include <config.h>
- #include "roken.h"
- #ifndef HAVE_H_ERRNO
- static int h_errno = NO_RECOVERY;
- #endif
- /*
- * lookup `name' (address family `af') in DNS and return a pointer
- * to a malloced struct hostent or NULL.
- */
- ROKEN_LIB_FUNCTION struct hostent * ROKEN_LIB_CALL
- getipnodebyname (const char *name, int af, int flags, int *error_num)
- {
- struct hostent *tmp;
- #ifdef HAVE_GETHOSTBYNAME2
- tmp = gethostbyname2 (name, af);
- #else
- if (af != AF_INET) {
- *error_num = NO_ADDRESS;
- return NULL;
- }
- tmp = gethostbyname (name);
- #endif
- if (tmp == NULL) {
- switch (h_errno) {
- case HOST_NOT_FOUND :
- case TRY_AGAIN :
- case NO_RECOVERY :
- *error_num = h_errno;
- break;
- case NO_DATA :
- *error_num = NO_ADDRESS;
- break;
- default :
- *error_num = NO_RECOVERY;
- break;
- }
- return NULL;
- }
- tmp = copyhostent (tmp);
- if (tmp == NULL) {
- *error_num = TRY_AGAIN;
- return NULL;
- }
- return tmp;
- }