diff options
Diffstat (limited to 'libc/dns/include/hostent.h')
| -rw-r--r-- | libc/dns/include/hostent.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/libc/dns/include/hostent.h b/libc/dns/include/hostent.h new file mode 100644 index 0000000..8b9a637 --- /dev/null +++ b/libc/dns/include/hostent.h @@ -0,0 +1,93 @@ +/* $NetBSD: hostent.h,v 1.2 2013/08/27 09:56:12 christos Exp $ */ + +/*- + * Copyright (c) 2013 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ +#ifndef _DNS_NET_HOSTENT_H +#define _DNS_NET_HOSTENT_H + +#include <stdio.h> +#include <netdb.h> +#include <stdarg.h> + +/* + * These are not being advertised because the interfaces are non-standard. + * There are versions by linux, aix, qnx, sun, etc. Our versions are used + * internally to provide thread safety; they mostly resemble qnx. + */ +void sethostent_r(FILE **); +struct hostent *netbsd_gethostent_r(FILE *, struct hostent *, char *, size_t, int *); +void endhostent_r(FILE **); + +/* + * The following are internal API's and are used only for testing. + */ +struct getnamaddr { + struct hostent *hp; + char *buf; + size_t buflen; + int *he; +}; + +/* /etc/hosts lookup */ +int _hf_gethtbyaddr(void *, void *, va_list); +int _hf_gethtbyname(void *, void *, va_list); + +#ifdef YP +/* NIS lookup */ +int _yp_gethtbyaddr(void *, void *, va_list); +int _yp_gethtbyname(void *, void *, va_list); +#endif + +#define HENT_ARRAY(dst, anum, ptr, len) \ + do { \ + size_t _len = (anum + 1) * sizeof(*dst); \ + if (_len > len) \ + goto nospc; \ + dst = (void *)ptr; \ + ptr += _len; \ + len -= _len; \ + } while (/*CONSTCOND*/0) + +#define HENT_COPY(dst, src, slen, ptr, len) \ + do { \ + if ((size_t)slen > len) \ + goto nospc; \ + memcpy(ptr, src, (size_t)slen); \ + dst = ptr; \ + ptr += slen; \ + len -= slen; \ + } while (/* CONSTCOND */0) + +#define HENT_SCOPY(dst, src, ptr, len) \ + do { \ + size_t _len = strlen(src) + 1; \ + HENT_COPY(dst, src, _len, ptr, len); \ + } while (/* CONSTCOND */0) + +#endif /* _DNS_NET_HOSTENT_H */ |