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
83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/* $NetBSD: lwderror.c,v 1.4 2014/12/10 04:37:51 christos Exp $ */
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/*
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* Copyright (C) 2004, 2005, 2007 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: lwderror.c,v 1.12 2007/06/19 23:46:59 tbox Exp */
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/*! \file */
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#include <config.h>
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#include <isc/socket.h>
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#include <isc/util.h>
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#include <named/types.h>
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#include <named/lwdclient.h>
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/*%
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* Generate an error packet for the client, schedule a send, and put us in
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* the SEND state.
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*
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* The client->pkt structure will be modified to form an error return.
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* The receiver needs to verify that it is in fact an error, and do the
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* right thing with it. The opcode will be unchanged. The result needs
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* to be set before calling this function.
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*
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* The only change this code makes is to set the receive buffer size to the
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* size we use, set the reply bit, and recompute any security information.
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*/
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void
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ns_lwdclient_errorpktsend(ns_lwdclient_t *client, isc_uint32_t _result) {
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isc_result_t result;
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int lwres;
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isc_region_t r;
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lwres_buffer_t b;
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REQUIRE(NS_LWDCLIENT_ISRUNNING(client));
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/*
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* Since we are only sending the packet header, we can safely toss
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* the receive buffer. This means we won't need to allocate space
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* for sending an error reply. This is a Good Thing.
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*/
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client->pkt.length = LWRES_LWPACKET_LENGTH;
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client->pkt.pktflags |= LWRES_LWPACKETFLAG_RESPONSE;
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client->pkt.recvlength = LWRES_RECVLENGTH;
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client->pkt.authtype = 0; /* XXXMLG */
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client->pkt.authlength = 0;
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client->pkt.result = _result;
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lwres_buffer_init(&b, client->buffer, LWRES_RECVLENGTH);
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lwres = lwres_lwpacket_renderheader(&b, &client->pkt);
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if (lwres != LWRES_R_SUCCESS) {
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ns_lwdclient_stateidle(client);
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return;
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}
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r.base = client->buffer;
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r.length = b.used;
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client->sendbuf = client->buffer;
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result = ns_lwdclient_sendreply(client, &r);
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if (result != ISC_R_SUCCESS) {
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ns_lwdclient_stateidle(client);
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return;
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}
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NS_LWDCLIENT_SETSEND(client);
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}
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