mirror of
https://github.com/isc-projects/bind9.git
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85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
/*
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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 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 INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: lwpacket.c,v 1.13 2001/01/09 21:59:29 bwelling Exp $ */
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#include <config.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <lwres/lwbuffer.h>
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#include <lwres/lwpacket.h>
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#include <lwres/result.h>
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#include "assert_p.h"
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#define LWPACKET_LENGTH \
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(sizeof(lwres_uint16_t) * 4 + sizeof(lwres_uint32_t) * 5)
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lwres_result_t
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lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) {
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REQUIRE(b != NULL);
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REQUIRE(pkt != NULL);
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if (!SPACE_OK(b, LWPACKET_LENGTH))
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return (LWRES_R_UNEXPECTEDEND);
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lwres_buffer_putuint32(b, pkt->length);
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lwres_buffer_putuint16(b, pkt->version);
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lwres_buffer_putuint16(b, pkt->pktflags);
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lwres_buffer_putuint32(b, pkt->serial);
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lwres_buffer_putuint32(b, pkt->opcode);
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lwres_buffer_putuint32(b, pkt->result);
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lwres_buffer_putuint32(b, pkt->recvlength);
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lwres_buffer_putuint16(b, pkt->authtype);
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lwres_buffer_putuint16(b, pkt->authlength);
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return (LWRES_R_SUCCESS);
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}
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lwres_result_t
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lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) {
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lwres_uint32_t space;
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REQUIRE(b != NULL);
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REQUIRE(pkt != NULL);
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space = LWRES_BUFFER_REMAINING(b);
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if (space < LWPACKET_LENGTH)
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return (LWRES_R_UNEXPECTEDEND);
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pkt->length = lwres_buffer_getuint32(b);
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/*
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* XXXBEW/MLG Checking that the buffer is long enough probably
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* shouldn't be done here, since this function is supposed to just
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* parse the header.
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*/
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if (pkt->length > space)
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return (LWRES_R_UNEXPECTEDEND);
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pkt->version = lwres_buffer_getuint16(b);
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pkt->pktflags = lwres_buffer_getuint16(b);
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pkt->serial = lwres_buffer_getuint32(b);
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pkt->opcode = lwres_buffer_getuint32(b);
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pkt->result = lwres_buffer_getuint32(b);
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pkt->recvlength = lwres_buffer_getuint32(b);
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pkt->authtype = lwres_buffer_getuint16(b);
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pkt->authlength = lwres_buffer_getuint16(b);
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return (LWRES_R_SUCCESS);
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}
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