mirror of
git://git.code.sf.net/p/cdesktopenv/code
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119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*%% (c) Copyright 1993, 1994 Hewlett-Packard Company */
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/*%% (c) Copyright 1993, 1994 International Business Machines Corp. */
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/*%% (c) Copyright 1993, 1994 Sun Microsystems, Inc. */
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/*%% (c) Copyright 1993, 1994 Novell, Inc. */
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/*%% $XConsortium: iskeyvalid.c /main/3 1995/10/23 11:42:06 rswiston $ */
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#ifndef lint
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static char sccsid[] = "@(#)iskeyvalid.c 1.3 89/07/17 Copyr 1988 Sun Micro";
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#endif
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/*
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* Copyright (c) 1988 by Sun Microsystems, Inc.
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*/
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/*
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* iskeydesc.c
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*
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* Description:
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* Functions dealing with the keydesc structure.
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*
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*
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*/
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#include "isam_impl.h"
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static int _check_typelen();
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/*
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* _validate_keydesc(keydesc, minreclen)
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*
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* Validate key descriptor. minreclen is needed to make suree that all
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* the key parts have a meaningful offset.
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*
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*/
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int
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_validate_keydesc(register struct keydesc *keydesc, int minreclen)
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{
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int nparts;
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register int i;
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int type, start, length;
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int keylen = 0;
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nparts = keydesc->k_nparts;
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if (nparts <= 0 || nparts > NPARTS)
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return (ISERROR);
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for (i = 0; i < nparts;i++) {
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type = keydesc->k_part[i].kp_type & ~ISDESC;
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start = keydesc->k_part[i].kp_start;
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length = keydesc->k_part[i].kp_leng;
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if(_check_typelen(type, length) == ISERROR)
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return (ISERROR);
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if (type < MINTYPE || type >= MAXTYPE)
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return (ISERROR);
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if (start < 0 || start + length > minreclen)
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return (ISERROR);
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keylen += length;
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}
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if(keylen > MAXKEYSIZE)
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return (ISERROR);
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return (ISOK);
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}
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/*
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* _check_typelen()
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*
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* Check length against the length of the corresponding type.
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*/
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static int
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_check_typelen(int type, int length)
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{
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switch (type) {
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case INTTYPE:
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return ((length == INTSIZE) ? ISOK : ISERROR);
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case LONGTYPE:
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return ((length == LONGSIZE) ? ISOK : ISERROR);
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case FLOATTYPE:
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return ((length == FLOATSIZE) ? ISOK : ISERROR);
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case DOUBLETYPE:
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return ((length == DOUBLESIZE) ? ISOK : ISERROR);
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case CHARTYPE:
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case BINTYPE:
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return ((length > 0) ? ISOK : ISERROR);
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default:
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return (ISERROR);
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}
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}
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