83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/* $NetBSD: lwderror.c,v 1.1.1.5 2008/06/21 18:35:06 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
|
|
* Copyright (C) 2000, 2001 Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
|
|
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
|
|
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/* Id: lwderror.c,v 1.12 2007/06/19 23:46:59 tbox Exp */
|
|
|
|
/*! \file */
|
|
|
|
#include <config.h>
|
|
|
|
#include <isc/socket.h>
|
|
#include <isc/util.h>
|
|
|
|
#include <named/types.h>
|
|
#include <named/lwdclient.h>
|
|
|
|
/*%
|
|
* Generate an error packet for the client, schedule a send, and put us in
|
|
* the SEND state.
|
|
*
|
|
* The client->pkt structure will be modified to form an error return.
|
|
* The receiver needs to verify that it is in fact an error, and do the
|
|
* right thing with it. The opcode will be unchanged. The result needs
|
|
* to be set before calling this function.
|
|
*
|
|
* The only change this code makes is to set the receive buffer size to the
|
|
* size we use, set the reply bit, and recompute any security information.
|
|
*/
|
|
void
|
|
ns_lwdclient_errorpktsend(ns_lwdclient_t *client, isc_uint32_t _result) {
|
|
isc_result_t result;
|
|
int lwres;
|
|
isc_region_t r;
|
|
lwres_buffer_t b;
|
|
|
|
REQUIRE(NS_LWDCLIENT_ISRUNNING(client));
|
|
|
|
/*
|
|
* Since we are only sending the packet header, we can safely toss
|
|
* the receive buffer. This means we won't need to allocate space
|
|
* for sending an error reply. This is a Good Thing.
|
|
*/
|
|
client->pkt.length = LWRES_LWPACKET_LENGTH;
|
|
client->pkt.pktflags |= LWRES_LWPACKETFLAG_RESPONSE;
|
|
client->pkt.recvlength = LWRES_RECVLENGTH;
|
|
client->pkt.authtype = 0; /* XXXMLG */
|
|
client->pkt.authlength = 0;
|
|
client->pkt.result = _result;
|
|
|
|
lwres_buffer_init(&b, client->buffer, LWRES_RECVLENGTH);
|
|
lwres = lwres_lwpacket_renderheader(&b, &client->pkt);
|
|
if (lwres != LWRES_R_SUCCESS) {
|
|
ns_lwdclient_stateidle(client);
|
|
return;
|
|
}
|
|
|
|
r.base = client->buffer;
|
|
r.length = b.used;
|
|
client->sendbuf = client->buffer;
|
|
result = ns_lwdclient_sendreply(client, &r);
|
|
if (result != ISC_R_SUCCESS) {
|
|
ns_lwdclient_stateidle(client);
|
|
return;
|
|
}
|
|
|
|
NS_LWDCLIENT_SETSEND(client);
|
|
}
|