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/*
* Copyright (C) 2000, 2001 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.
*/
/* $Id: getrrset2.c,v 1.2 2004/09/20 18:00:35 mcr Exp $ */
#include <config.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <lwres/lwres.h>
#include <lwres/net.h>
#include <lwres/netdb.h> /* XXX #include <netdb.h> */
#include <lwres/async.h>
#include "assert_p.h"
int
lwres_getrrsetbyname_async(const char *hostname, unsigned int rdclass,
unsigned int rdtype, unsigned int flags,
struct rrsetinfo **res)
{
int ret, ret2;
lwres_context_t *ctx = NULL;
struct lwres_async_state las;
struct lwres_async_state *plas;
struct timeval timeout;
fd_set readfds;
int sock;
ret = lwres_async_init(&ctx);
if(ret != ERRSET_SUCCESS) {
return(ret);
}
ret = lwres_getrrsetbyname_init(hostname, rdclass,
rdtype, flags,
ctx, &las);
if(ret != ERRSET_SUCCESS) {
return ret;
}
again:
lwres_getrrsetbyname_xmit(ctx, &las);
timeout.tv_sec = lwres_async_timeout(ctx);
sock = lwres_async_fd(ctx);
FD_ZERO(&readfds);
FD_SET(sock, &readfds);
ret2 = select(sock + 1, &readfds, NULL, NULL, &timeout);
/*
* What happened with select?
*/
if (ret2 < 0) {
ret = LWRES_R_IOERROR;
goto out3;
}
if (ret2 == 0) {
ret = LWRES_R_TIMEOUT;
goto out3;
}
ret = lwres_getrrsetbyname_read(&plas, ctx, res);
if(ret == LWRES_R_RETRY) {
/* XXX retransmit */
goto again;
}
out3:
/* clean stuff up */
if (ctx != NULL)
lwres_context_destroy(&ctx);
return ret;
}
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