00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/* $NetBSD: context.h,v 1.4 2014/12/10 04:38:02 christos Exp $ */
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/*
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* Copyright (C) 2004-2008 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2000, 2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or 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.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: context.h,v 1.23 2008/12/17 23:47:58 tbox Exp */
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#ifndef LWRES_CONTEXT_H
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#define LWRES_CONTEXT_H 1
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/*! \file lwres/context.h */
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#include <stddef.h>
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#include <lwres/lang.h>
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#include <lwres/int.h>
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#include <lwres/result.h>
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/*!
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* Used to set various options such as timeout, authentication, etc
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*/
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typedef struct lwres_context lwres_context_t;
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LWRES_LANG_BEGINDECLS
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typedef void *(*lwres_malloc_t)(void *arg, size_t length);
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typedef void (*lwres_free_t)(void *arg, void *mem, size_t length);
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/*
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* XXXMLG
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*
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* Make the server reload /etc/resolv.conf periodically.
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*
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* Make the server do sortlist/searchlist.
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*
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* Client side can disable the search/sortlist processing.
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*
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* Use an array of addresses/masks and searchlist for client-side, and
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* if added to the client disable the processing on the server.
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*
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* Share /etc/resolv.conf data between contexts.
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*/
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/*!
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* _SERVERMODE
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* Don't allocate and connect a socket to the server, since the
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* caller _is_ a server.
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*
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* _USEIPV4, _USEIPV6
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* Use IPv4 and IPv6 transactions with remote servers, respectively.
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* For backward compatibility, regard both flags as being set when both
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* are cleared.
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*/
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#define LWRES_CONTEXT_SERVERMODE 0x00000001U
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#define LWRES_CONTEXT_USEIPV4 0x00000002U
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#define LWRES_CONTEXT_USEIPV6 0x00000004U
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lwres_result_t
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lwres_context_create(lwres_context_t **contextp, void *arg,
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lwres_malloc_t malloc_function,
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lwres_free_t free_function,
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unsigned int flags);
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/**<
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* Allocate a lwres context. This is used in all lwres calls.
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*
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* Memory management can be replaced here by passing in two functions.
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* If one is non-NULL, they must both be non-NULL. "arg" is passed to
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* these functions.
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*
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* Contexts are not thread safe. Document at the top of the file.
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* XXXMLG
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*
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* If they are NULL, the standard malloc() and free() will be used.
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*
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*\pre contextp != NULL && contextp == NULL.
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*
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*\return Returns 0 on success, non-zero on failure.
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*/
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void
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lwres_context_destroy(lwres_context_t **contextp);
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/**<
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* Frees all memory associated with a lwres context.
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*
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*\pre contextp != NULL && contextp == NULL.
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*/
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lwres_uint32_t
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lwres_context_nextserial(lwres_context_t *ctx);
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/**<
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* XXXMLG Document
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*/
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void
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lwres_context_initserial(lwres_context_t *ctx, lwres_uint32_t serial);
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void
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lwres_context_freemem(lwres_context_t *ctx, void *mem, size_t len);
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void *
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lwres_context_allocmem(lwres_context_t *ctx, size_t len);
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int
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lwres_context_getsocket(lwres_context_t *ctx);
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lwres_result_t
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lwres_context_send(lwres_context_t *ctx,
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void *sendbase, int sendlen);
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lwres_result_t
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lwres_context_recv(lwres_context_t *ctx,
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void *recvbase, int recvlen,
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int *recvd_len);
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lwres_result_t
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lwres_context_sendrecv(lwres_context_t *ctx,
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void *sendbase, int sendlen,
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void *recvbase, int recvlen,
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int *recvd_len);
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LWRES_LANG_ENDDECLS
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#endif /* LWRES_CONTEXT_H */
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