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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: lwpacket.c,v 1.1 2004/03/15 20:35:25 as Exp $ */
#include <config.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <lwres/lwbuffer.h>
#include <lwres/lwpacket.h>
#include <lwres/result.h>
#include "assert_p.h"
#define LWPACKET_LENGTH \
(sizeof(lwres_uint16_t) * 4 + sizeof(lwres_uint32_t) * 5)
lwres_result_t
lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) {
REQUIRE(b != NULL);
REQUIRE(pkt != NULL);
if (!SPACE_OK(b, LWPACKET_LENGTH))
return (LWRES_R_UNEXPECTEDEND);
lwres_buffer_putuint32(b, pkt->length);
lwres_buffer_putuint16(b, pkt->version);
lwres_buffer_putuint16(b, pkt->pktflags);
lwres_buffer_putuint32(b, pkt->serial);
lwres_buffer_putuint32(b, pkt->opcode);
lwres_buffer_putuint32(b, pkt->result);
lwres_buffer_putuint32(b, pkt->recvlength);
lwres_buffer_putuint16(b, pkt->authtype);
lwres_buffer_putuint16(b, pkt->authlength);
return (LWRES_R_SUCCESS);
}
lwres_result_t
lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) {
lwres_uint32_t space;
REQUIRE(b != NULL);
REQUIRE(pkt != NULL);
space = LWRES_BUFFER_REMAINING(b);
if (space < LWPACKET_LENGTH)
return (LWRES_R_UNEXPECTEDEND);
pkt->length = lwres_buffer_getuint32(b);
/*
* XXXBEW/MLG Checking that the buffer is long enough probably
* shouldn't be done here, since this function is supposed to just
* parse the header.
*/
if (pkt->length > space)
return (LWRES_R_UNEXPECTEDEND);
pkt->version = lwres_buffer_getuint16(b);
pkt->pktflags = lwres_buffer_getuint16(b);
pkt->serial = lwres_buffer_getuint32(b);
pkt->opcode = lwres_buffer_getuint32(b);
pkt->result = lwres_buffer_getuint32(b);
pkt->recvlength = lwres_buffer_getuint32(b);
pkt->authtype = lwres_buffer_getuint16(b);
pkt->authlength = lwres_buffer_getuint16(b);
return (LWRES_R_SUCCESS);
}
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