mirror of
https://github.com/isc-projects/bind9.git
synced 2026-02-26 11:32:01 -05:00
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*
|
|
* Copyright (C) 2000 Internet Software Consortium.
|
|
*
|
|
* Permission to use, copy, modify, and 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
|
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
|
* CONSORTIUM 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.
|
|
*/
|
|
|
|
#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;
|
|
ns_lwdclientmgr_t *cm;
|
|
|
|
cm = client->clientmgr;
|
|
|
|
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 = isc_socket_sendto(cm->sock, &r, cm->task, ns_lwdclient_send,
|
|
client, &client->address, NULL);
|
|
if (result != ISC_R_SUCCESS) {
|
|
ns_lwdclient_stateidle(client);
|
|
return;
|
|
}
|
|
|
|
NS_LWDCLIENT_SETSEND(client);
|
|
}
|