684 lines
13 KiB
C
684 lines
13 KiB
C
/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $FreeBSD$
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*
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*/
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/*
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* SPANS Signalling Manager
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* ---------------------------
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*
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* Kernel XDR (External Data Representation) routines
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <netatm/port.h>
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#ifndef lint
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__RCSID("@(#) $FreeBSD$");
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#endif
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/*
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* This file contains code that has been copied and/or modified from
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* the following FreeBSD files:
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*
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* /usr/src/lib/libc/xdr/xdr.c
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* /usr/src/lib/libc/xdr/xdr_mem.c
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*
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* which are covered by the copyright notice below.
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*/
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)xdr.c 1.35 87/08/12";*/
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/*static char *sccsid = "from: @(#)xdr.c 2.1 88/07/29 4.0 RPCSRC";*/
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/*static char *rcsid = "Id: xdr.c,v 1.2.4.2 1996/06/05 02:52:02 jkh Exp";*/
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#endif
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/*
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* xdr.c, Generic XDR routines implementation.
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*
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* Copyright (C) 1986, Sun Microsystems, Inc.
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*
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* These are the "generic" xdr routines used to serialize and de-serialize
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* most common data items. See xdr.h for more info on the interface to
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* xdr.
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*/
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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/*
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* constants specific to the xdr "protocol"
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*/
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#define XDR_FALSE ((long) 0)
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#define XDR_TRUE ((long) 1)
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#define LASTUNSIGNED ((u_int) 0-1)
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/*
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* for unit alignment
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*/
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static char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 };
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/*
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* XDR integers
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*/
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bool_t
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xdr_int(xdrs, ip)
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XDR *xdrs;
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int *ip;
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{
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#ifdef lint
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(void) (xdr_short(xdrs, (short *)ip));
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return (xdr_long(xdrs, (long *)ip));
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#else
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if (sizeof (int) == sizeof (long)) {
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return (xdr_long(xdrs, (long *)ip));
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} else {
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return (xdr_short(xdrs, (short *)ip));
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}
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#endif
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}
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/*
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* XDR unsigned integers
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*/
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bool_t
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xdr_u_int(xdrs, up)
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XDR *xdrs;
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u_int *up;
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{
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#ifdef lint
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(void) (xdr_short(xdrs, (short *)up));
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return (xdr_u_long(xdrs, (u_long *)up));
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#else
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if (sizeof (u_int) == sizeof (u_long)) {
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return (xdr_u_long(xdrs, (u_long *)up));
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} else {
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return (xdr_short(xdrs, (short *)up));
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}
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#endif
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}
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/*
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* XDR long integers
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* same as xdr_u_long - open coded to save a proc call!
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*/
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bool_t
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xdr_long(xdrs, lp)
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register XDR *xdrs;
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long *lp;
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{
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if (xdrs->x_op == XDR_ENCODE)
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return (XDR_PUTLONG(xdrs, lp));
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if (xdrs->x_op == XDR_DECODE)
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return (XDR_GETLONG(xdrs, lp));
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if (xdrs->x_op == XDR_FREE)
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return (TRUE);
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return (FALSE);
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}
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/*
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* XDR unsigned long integers
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* same as xdr_long - open coded to save a proc call!
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*/
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bool_t
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xdr_u_long(xdrs, ulp)
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register XDR *xdrs;
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u_long *ulp;
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{
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if (xdrs->x_op == XDR_DECODE)
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return (XDR_GETLONG(xdrs, (long *)ulp));
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if (xdrs->x_op == XDR_ENCODE)
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return (XDR_PUTLONG(xdrs, (long *)ulp));
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if (xdrs->x_op == XDR_FREE)
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return (TRUE);
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return (FALSE);
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}
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/*
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* XDR short integers
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*/
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bool_t
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xdr_short(xdrs, sp)
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register XDR *xdrs;
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short *sp;
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{
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long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (long) *sp;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*sp = (short) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR unsigned short integers
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*/
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bool_t
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xdr_u_short(xdrs, usp)
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register XDR *xdrs;
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u_short *usp;
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{
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u_long l;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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l = (u_long) *usp;
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return (XDR_PUTLONG(xdrs, &l));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &l)) {
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return (FALSE);
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}
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*usp = (u_short) l;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR a char
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*/
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bool_t
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xdr_char(xdrs, cp)
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XDR *xdrs;
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char *cp;
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{
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int i;
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i = (*cp);
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if (!xdr_int(xdrs, &i)) {
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return (FALSE);
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}
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*cp = i;
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return (TRUE);
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}
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/*
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* XDR an unsigned char
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*/
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bool_t
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xdr_u_char(xdrs, cp)
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XDR *xdrs;
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u_char *cp;
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{
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u_int u;
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u = (*cp);
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if (!xdr_u_int(xdrs, &u)) {
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return (FALSE);
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}
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*cp = u;
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return (TRUE);
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}
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/*
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* XDR booleans
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*/
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bool_t
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xdr_bool(xdrs, bp)
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register XDR *xdrs;
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bool_t *bp;
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{
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long lb;
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switch (xdrs->x_op) {
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case XDR_ENCODE:
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lb = *bp ? XDR_TRUE : XDR_FALSE;
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return (XDR_PUTLONG(xdrs, &lb));
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case XDR_DECODE:
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if (!XDR_GETLONG(xdrs, &lb)) {
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return (FALSE);
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}
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*bp = (lb == XDR_FALSE) ? FALSE : TRUE;
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return (TRUE);
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case XDR_FREE:
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR enumerations
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*/
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bool_t
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xdr_enum(xdrs, ep)
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XDR *xdrs;
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enum_t *ep;
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{
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#ifndef lint
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enum sizecheck { SIZEVAL }; /* used to find the size of an enum */
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/*
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* enums are treated as ints
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*/
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if (sizeof (enum sizecheck) == sizeof (long)) {
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return (xdr_long(xdrs, (long *)ep));
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} else if (sizeof (enum sizecheck) == sizeof (short)) {
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return (xdr_short(xdrs, (short *)ep));
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} else {
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return (FALSE);
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}
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#else
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(void) (xdr_short(xdrs, (short *)ep));
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return (xdr_long(xdrs, (long *)ep));
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#endif
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}
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/*
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* XDR opaque data
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* Allows the specification of a fixed size sequence of opaque bytes.
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* cp points to the opaque object and cnt gives the byte length.
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*/
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bool_t
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xdr_opaque(xdrs, cp, cnt)
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register XDR *xdrs;
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caddr_t cp;
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register u_int cnt;
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{
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register u_int rndup;
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static char crud[BYTES_PER_XDR_UNIT];
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/*
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* if no data we are done
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*/
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if (cnt == 0)
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return (TRUE);
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/*
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* round byte count to full xdr units
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*/
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rndup = cnt % BYTES_PER_XDR_UNIT;
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if (rndup > 0)
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rndup = BYTES_PER_XDR_UNIT - rndup;
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if (xdrs->x_op == XDR_DECODE) {
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if (!XDR_GETBYTES(xdrs, cp, cnt)) {
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return (FALSE);
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}
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if (rndup == 0)
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return (TRUE);
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return (XDR_GETBYTES(xdrs, crud, rndup));
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}
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if (xdrs->x_op == XDR_ENCODE) {
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if (!XDR_PUTBYTES(xdrs, cp, cnt)) {
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return (FALSE);
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}
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if (rndup == 0)
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return (TRUE);
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return (XDR_PUTBYTES(xdrs, xdr_zero, rndup));
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}
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if (xdrs->x_op == XDR_FREE) {
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return (TRUE);
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}
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return (FALSE);
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}
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/*
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* XDR implementation using kernel buffers
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/
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/*static char *sccsid = "from: @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC";*/
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/*static char *rcsid = "Id: xdr_mem.c,v 1.2.4.2 1996/06/05 02:52:04 jkh Exp";*/
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#endif
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/*
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* xdr_mem.h, XDR implementation using memory buffers.
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*
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* If you have some data to be interpreted as external data representation
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* or to be converted to external data representation in a memory buffer,
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* then this is the package for you.
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*
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*/
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void xdrmbuf_init(XDR *, KBuffer *, enum xdr_op);
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static bool_t xdrmbuf_getlong(XDR *, long *);
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static bool_t xdrmbuf_putlong(XDR *, const long *);
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static bool_t xdrmbuf_getbytes(XDR *, char *, u_int);
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static bool_t xdrmbuf_putbytes(XDR *, const char *, u_int);
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static u_int xdrmbuf_getpos(XDR *);
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static struct xdr_ops xdrmbuf_ops = {
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xdrmbuf_getlong,
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xdrmbuf_putlong,
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xdrmbuf_getbytes,
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xdrmbuf_putbytes,
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xdrmbuf_getpos,
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NULL,
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NULL,
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NULL
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};
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/*
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* The procedure xdrmbuf_init initializes a stream descriptor for a
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* kernel buffer.
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*/
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void
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xdrmbuf_init(xdrs, m, op)
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register XDR *xdrs;
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KBuffer *m;
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enum xdr_op op;
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{
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xdrs->x_op = op;
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xdrs->x_ops = &xdrmbuf_ops;
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xdrs->x_base = (caddr_t)m;
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KB_DATASTART(m, xdrs->x_private, caddr_t);
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xdrs->x_handy = KB_LEN(m);
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}
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static bool_t
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xdrmbuf_getlong(xdrs, lp)
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register XDR *xdrs;
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long *lp;
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{
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/*
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* See if long is contained in this buffer
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*/
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if ((xdrs->x_handy -= sizeof(long)) < 0) {
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register KBuffer *m;
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/*
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* We (currently) don't allow a long to span a buffer
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*/
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if (xdrs->x_handy != -sizeof(long)) {
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printf("xdrmbuf_getlong: data spans buffers\n");
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return (FALSE);
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}
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/*
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* Try to move to a chained buffer
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*/
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if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
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m = KB_NEXT(m);
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xdrs->x_base = (caddr_t)m;
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}
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if (m) {
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/*
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* Setup new buffer's info
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*/
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KB_DATASTART(m, xdrs->x_private, caddr_t);
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if ((xdrs->x_handy = KB_LEN(m) - sizeof(long)) < 0) {
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printf("xdrmbuf_getlong: short buffer\n");
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return (FALSE);
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}
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} else {
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/*
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* No more buffers
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*/
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return (FALSE);
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}
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}
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/*
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* Return the long value
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*/
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*lp = (long)ntohl((u_long)(*((long *)(xdrs->x_private))));
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/*
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* Advance the data stream
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*/
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((long *)xdrs->x_private)++;
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return (TRUE);
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}
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static bool_t
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xdrmbuf_putlong(xdrs, lp)
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register XDR *xdrs;
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const long *lp;
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{
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/*
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* See if long will fit in this buffer
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*/
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if ((xdrs->x_handy -= sizeof(long)) < 0) {
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register KBuffer *m;
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/*
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* We (currently) don't allow a long to span a buffer
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*/
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if (xdrs->x_handy != -sizeof(long)) {
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printf("xdrmbuf_putlong: data spans buffers\n");
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return (FALSE);
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}
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/*
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* Try to move to a chained buffer
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*/
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if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
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m = KB_NEXT(m);
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xdrs->x_base = (caddr_t)m;
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}
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if (m) {
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/*
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* Setup new buffer's info
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*/
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KB_DATASTART(m, xdrs->x_private, caddr_t);
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if ((xdrs->x_handy = KB_LEN(m) - sizeof(long)) < 0) {
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printf("xdrmbuf_putlong: short buffer\n");
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return (FALSE);
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}
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} else {
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/*
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* No more buffers
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*/
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return (FALSE);
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}
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}
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/*
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* Store the long value into our buffer
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*/
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*(long *)xdrs->x_private = (long)htonl((u_long)(*lp));
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/*
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* Advance the data stream
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*/
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((long *)xdrs->x_private)++;
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return (TRUE);
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}
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static bool_t
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xdrmbuf_getbytes(xdrs, addr, len)
|
|
register XDR *xdrs;
|
|
caddr_t addr;
|
|
register u_int len;
|
|
{
|
|
|
|
while (len > 0) {
|
|
u_int copy;
|
|
|
|
if (xdrs->x_handy <= 0) {
|
|
register KBuffer *m;
|
|
|
|
/*
|
|
* No data in current buffer, move to a chained buffer
|
|
*/
|
|
if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
|
|
m = KB_NEXT(m);
|
|
xdrs->x_base = (caddr_t)m;
|
|
}
|
|
if (m) {
|
|
/*
|
|
* Setup new buffer's info
|
|
*/
|
|
KB_DATASTART(m, xdrs->x_private, caddr_t);
|
|
xdrs->x_handy = KB_LEN(m);
|
|
} else {
|
|
/*
|
|
* No more buffers
|
|
*/
|
|
return (FALSE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copy from buffer to user's space
|
|
*/
|
|
copy = MIN(len, xdrs->x_handy);
|
|
bcopy(xdrs->x_private, addr, copy);
|
|
|
|
/*
|
|
* Update data stream controls
|
|
*/
|
|
((char *)xdrs->x_private) += copy;
|
|
xdrs->x_handy -= copy;
|
|
addr += copy;
|
|
len -= copy;
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
static bool_t
|
|
xdrmbuf_putbytes(xdrs, addr, len)
|
|
register XDR *xdrs;
|
|
const char *addr;
|
|
register u_int len;
|
|
{
|
|
|
|
while (len > 0) {
|
|
u_int copy;
|
|
|
|
if (xdrs->x_handy <= 0) {
|
|
register KBuffer *m;
|
|
|
|
/*
|
|
* No data in current buffer, move to a chained buffer
|
|
*/
|
|
if ((m = (KBuffer *)(xdrs->x_base)) != NULL) {
|
|
m = KB_NEXT(m);
|
|
xdrs->x_base = (caddr_t)m;
|
|
}
|
|
if (m) {
|
|
/*
|
|
* Setup new buffer's info
|
|
*/
|
|
KB_DATASTART(m, xdrs->x_private, caddr_t);
|
|
xdrs->x_handy = KB_LEN(m);
|
|
} else {
|
|
/*
|
|
* No more buffers
|
|
*/
|
|
return (FALSE);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copy from user's space into buffer
|
|
*/
|
|
copy = MIN(len, xdrs->x_handy);
|
|
bcopy(addr, xdrs->x_private, copy);
|
|
|
|
/*
|
|
* Update data stream controls
|
|
*/
|
|
((char *)xdrs->x_private)++;
|
|
xdrs->x_handy -= copy;
|
|
addr += copy;
|
|
len -= copy;
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
static u_int
|
|
xdrmbuf_getpos(xdrs)
|
|
register XDR *xdrs;
|
|
{
|
|
|
|
return ((u_int)xdrs->x_private - (u_int)xdrs->x_base);
|
|
}
|