021db4be6f
New configure option --enable-obsolete-rpc makes the deprecated RPC headers and functions available at compile time as they were before version 2.14. This option will be removed at some time in the future after the TI-RPC library becomes fully sufficient for the needs of existing applications.
832 lines
16 KiB
C
832 lines
16 KiB
C
/*
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* xdr.c, Generic XDR routines implementation.
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*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 <stdio.h>
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#include <limits.h>
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#include <string.h>
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#include <libintl.h>
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#include <wchar.h>
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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 const char xdr_zero[BYTES_PER_XDR_UNIT] = {0, 0, 0, 0};
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/*
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* Free a data structure using XDR
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* Not a filter, but a convenient utility nonetheless
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*/
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void
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xdr_free (xdrproc_t proc, char *objp)
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{
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XDR x;
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x.x_op = XDR_FREE;
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(*proc) (&x, objp);
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_free)
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#else
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libc_hidden_nolink_sunrpc (xdr_free, GLIBC_2_0)
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#endif
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/*
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* XDR nothing
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*/
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bool_t
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xdr_void (void)
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{
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return TRUE;
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_void)
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#else
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libc_hidden_nolink_sunrpc (xdr_void, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, int *ip)
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{
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#if INT_MAX < LONG_MAX
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long l;
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switch (xdrs->x_op)
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{
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case XDR_ENCODE:
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l = (long) *ip;
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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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{
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return FALSE;
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}
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*ip = (int) l;
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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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#elif INT_MAX == LONG_MAX
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return xdr_long (xdrs, (long *) ip);
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#elif INT_MAX == SHRT_MAX
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return xdr_short (xdrs, (short *) ip);
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#else
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#error unexpected integer sizes in_xdr_int()
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#endif
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_int)
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#else
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libc_hidden_nolink_sunrpc (xdr_int, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, u_int *up)
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{
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#if UINT_MAX < ULONG_MAX
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long l;
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switch (xdrs->x_op)
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{
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case XDR_ENCODE:
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l = (u_long) * up;
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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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{
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return FALSE;
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}
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*up = (u_int) (u_long) l;
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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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#elif UINT_MAX == ULONG_MAX
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return xdr_u_long (xdrs, (u_long *) up);
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#elif UINT_MAX == USHRT_MAX
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return xdr_short (xdrs, (short *) up);
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#else
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#error unexpected integer sizes in_xdr_u_int()
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#endif
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_u_int)
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#else
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libc_hidden_nolink_sunrpc (xdr_u_int, GLIBC_2_0)
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#endif
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/*
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* XDR long integers
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* The definition of xdr_long() is kept for backward
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* compatibility. Instead xdr_int() should be used.
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*/
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bool_t
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xdr_long (XDR *xdrs, long *lp)
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{
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if (xdrs->x_op == XDR_ENCODE
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&& (sizeof (int32_t) == sizeof (long)
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|| (int32_t) *lp == *lp))
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_long)
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#else
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libc_hidden_nolink_sunrpc (xdr_long, GLIBC_2_0)
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#endif
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/*
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* XDR unsigned long integers
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* The definition of xdr_u_long() is kept for backward
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* compatibility. Instead xdr_u_int() should be used.
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*/
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bool_t
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xdr_u_long (XDR *xdrs, u_long *ulp)
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{
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switch (xdrs->x_op)
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{
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case XDR_DECODE:
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{
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long int tmp;
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if (XDR_GETLONG (xdrs, &tmp) == FALSE)
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return FALSE;
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*ulp = (uint32_t) tmp;
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return TRUE;
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}
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case XDR_ENCODE:
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if (sizeof (uint32_t) != sizeof (u_long)
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&& (uint32_t) *ulp != *ulp)
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return FALSE;
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return XDR_PUTLONG (xdrs, (long *) ulp);
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_u_long)
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#else
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libc_hidden_nolink_sunrpc (xdr_u_long, GLIBC_2_0)
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#endif
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/*
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* XDR hyper integers
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* same as xdr_u_hyper - open coded to save a proc call!
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*/
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bool_t
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xdr_hyper (XDR *xdrs, quad_t *llp)
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{
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long int t1, t2;
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if (xdrs->x_op == XDR_ENCODE)
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{
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t1 = (long) ((*llp) >> 32);
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t2 = (long) (*llp);
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return (XDR_PUTLONG(xdrs, &t1) && XDR_PUTLONG(xdrs, &t2));
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}
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if (xdrs->x_op == XDR_DECODE)
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{
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if (!XDR_GETLONG(xdrs, &t1) || !XDR_GETLONG(xdrs, &t2))
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return FALSE;
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*llp = ((quad_t) t1) << 32;
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*llp |= (uint32_t) t2;
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return TRUE;
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}
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_hyper)
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#else
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libc_hidden_nolink_sunrpc (xdr_hyper, GLIBC_2_1_1)
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#endif
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/*
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* XDR hyper integers
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* same as xdr_hyper - open coded to save a proc call!
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*/
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bool_t
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xdr_u_hyper (XDR *xdrs, u_quad_t *ullp)
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{
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long int t1, t2;
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if (xdrs->x_op == XDR_ENCODE)
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{
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t1 = (unsigned long) ((*ullp) >> 32);
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t2 = (unsigned long) (*ullp);
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return (XDR_PUTLONG(xdrs, &t1) && XDR_PUTLONG(xdrs, &t2));
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}
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if (xdrs->x_op == XDR_DECODE)
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{
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if (!XDR_GETLONG(xdrs, &t1) || !XDR_GETLONG(xdrs, &t2))
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return FALSE;
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*ullp = ((u_quad_t) t1) << 32;
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*ullp |= (uint32_t) t2;
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return TRUE;
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}
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_u_hyper)
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#else
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libc_hidden_nolink_sunrpc (xdr_u_hyper, GLIBC_2_1_1)
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#endif
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bool_t
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xdr_longlong_t (XDR *xdrs, quad_t *llp)
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{
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return xdr_hyper (xdrs, llp);
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_longlong_t)
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#else
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libc_hidden_nolink_sunrpc (xdr_longlong_t, GLIBC_2_1_1)
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#endif
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bool_t
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xdr_u_longlong_t (XDR *xdrs, u_quad_t *ullp)
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{
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return xdr_u_hyper (xdrs, ullp);
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_u_longlong_t)
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#else
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libc_hidden_nolink_sunrpc (xdr_u_longlong_t, GLIBC_2_1_1)
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#endif
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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 (XDR *xdrs, short *sp)
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{
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long l;
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switch (xdrs->x_op)
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{
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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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{
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_short)
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#else
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libc_hidden_nolink_sunrpc (xdr_short, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, u_short *usp)
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{
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long l;
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switch (xdrs->x_op)
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{
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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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{
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return FALSE;
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}
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*usp = (u_short) (u_long) 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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_u_short)
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#else
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libc_hidden_nolink_sunrpc (xdr_u_short, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, 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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{
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_char)
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#else
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libc_hidden_nolink_sunrpc (xdr_char, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, 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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{
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_u_char)
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#else
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libc_hidden_nolink_sunrpc (xdr_u_char, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, 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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{
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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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{
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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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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_bool)
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#else
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libc_hidden_nolink_sunrpc (xdr_bool, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, enum_t *ep)
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{
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enum sizecheck
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{
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SIZEVAL
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}; /* 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) == 4)
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{
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#if INT_MAX < LONG_MAX
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long l;
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switch (xdrs->x_op)
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{
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case XDR_ENCODE:
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l = *ep;
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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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{
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return FALSE;
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}
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*ep = l;
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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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#else
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return xdr_long (xdrs, (long *) ep);
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#endif
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}
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else if (sizeof (enum sizecheck) == sizeof (short))
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{
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return xdr_short (xdrs, (short *) ep);
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}
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else
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{
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return FALSE;
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}
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}
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#ifdef EXPORT_RPC_SYMBOLS
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libc_hidden_def (xdr_enum)
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#else
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libc_hidden_nolink_sunrpc (xdr_enum, GLIBC_2_0)
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#endif
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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 (XDR *xdrs, caddr_t cp, u_int cnt)
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{
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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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switch (xdrs->x_op)
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{
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case XDR_DECODE:
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if (!XDR_GETBYTES (xdrs, cp, cnt))
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{
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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, (caddr_t)crud, rndup);
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case XDR_ENCODE:
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if (!XDR_PUTBYTES (xdrs, cp, cnt))
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{
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return FALSE;
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}
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|
if (rndup == 0)
|
|
return TRUE;
|
|
return XDR_PUTBYTES (xdrs, xdr_zero, rndup);
|
|
|
|
case XDR_FREE:
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
#ifdef EXPORT_RPC_SYMBOLS
|
|
libc_hidden_def (xdr_opaque)
|
|
#else
|
|
libc_hidden_nolink_sunrpc (xdr_opaque, GLIBC_2_0)
|
|
#endif
|
|
|
|
/*
|
|
* XDR counted bytes
|
|
* *cpp is a pointer to the bytes, *sizep is the count.
|
|
* If *cpp is NULL maxsize bytes are allocated
|
|
*/
|
|
bool_t
|
|
xdr_bytes (xdrs, cpp, sizep, maxsize)
|
|
XDR *xdrs;
|
|
char **cpp;
|
|
u_int *sizep;
|
|
u_int maxsize;
|
|
{
|
|
char *sp = *cpp; /* sp is the actual string pointer */
|
|
u_int nodesize;
|
|
|
|
/*
|
|
* first deal with the length since xdr bytes are counted
|
|
*/
|
|
if (!xdr_u_int (xdrs, sizep))
|
|
{
|
|
return FALSE;
|
|
}
|
|
nodesize = *sizep;
|
|
if ((nodesize > maxsize) && (xdrs->x_op != XDR_FREE))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* now deal with the actual bytes
|
|
*/
|
|
switch (xdrs->x_op)
|
|
{
|
|
case XDR_DECODE:
|
|
if (nodesize == 0)
|
|
{
|
|
return TRUE;
|
|
}
|
|
if (sp == NULL)
|
|
{
|
|
*cpp = sp = (char *) mem_alloc (nodesize);
|
|
}
|
|
if (sp == NULL)
|
|
{
|
|
(void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n"));
|
|
return FALSE;
|
|
}
|
|
/* fall into ... */
|
|
|
|
case XDR_ENCODE:
|
|
return xdr_opaque (xdrs, sp, nodesize);
|
|
|
|
case XDR_FREE:
|
|
if (sp != NULL)
|
|
{
|
|
mem_free (sp, nodesize);
|
|
*cpp = NULL;
|
|
}
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
#ifdef EXPORT_RPC_SYMBOLS
|
|
libc_hidden_def (xdr_bytes)
|
|
#else
|
|
libc_hidden_nolink_sunrpc (xdr_bytes, GLIBC_2_0)
|
|
#endif
|
|
|
|
/*
|
|
* Implemented here due to commonality of the object.
|
|
*/
|
|
bool_t
|
|
xdr_netobj (xdrs, np)
|
|
XDR *xdrs;
|
|
struct netobj *np;
|
|
{
|
|
|
|
return xdr_bytes (xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ);
|
|
}
|
|
#ifdef EXPORT_RPC_SYMBOLS
|
|
libc_hidden_def (xdr_netobj)
|
|
#else
|
|
libc_hidden_nolink_sunrpc (xdr_netobj, GLIBC_2_0)
|
|
#endif
|
|
|
|
/*
|
|
* XDR a discriminated union
|
|
* Support routine for discriminated unions.
|
|
* You create an array of xdrdiscrim structures, terminated with
|
|
* an entry with a null procedure pointer. The routine gets
|
|
* the discriminant value and then searches the array of xdrdiscrims
|
|
* looking for that value. It calls the procedure given in the xdrdiscrim
|
|
* to handle the discriminant. If there is no specific routine a default
|
|
* routine may be called.
|
|
* If there is no specific or default routine an error is returned.
|
|
*/
|
|
bool_t
|
|
xdr_union (xdrs, dscmp, unp, choices, dfault)
|
|
XDR *xdrs;
|
|
enum_t *dscmp; /* enum to decide which arm to work on */
|
|
char *unp; /* the union itself */
|
|
const struct xdr_discrim *choices; /* [value, xdr proc] for each arm */
|
|
xdrproc_t dfault; /* default xdr routine */
|
|
{
|
|
enum_t dscm;
|
|
|
|
/*
|
|
* we deal with the discriminator; it's an enum
|
|
*/
|
|
if (!xdr_enum (xdrs, dscmp))
|
|
{
|
|
return FALSE;
|
|
}
|
|
dscm = *dscmp;
|
|
|
|
/*
|
|
* search choices for a value that matches the discriminator.
|
|
* if we find one, execute the xdr routine for that value.
|
|
*/
|
|
for (; choices->proc != NULL_xdrproc_t; choices++)
|
|
{
|
|
if (choices->value == dscm)
|
|
return (*(choices->proc)) (xdrs, unp, LASTUNSIGNED);
|
|
}
|
|
|
|
/*
|
|
* no match - execute the default xdr routine if there is one
|
|
*/
|
|
return ((dfault == NULL_xdrproc_t) ? FALSE :
|
|
(*dfault) (xdrs, unp, LASTUNSIGNED));
|
|
}
|
|
libc_hidden_nolink_sunrpc (xdr_union, GLIBC_2_0)
|
|
|
|
|
|
/*
|
|
* Non-portable xdr primitives.
|
|
* Care should be taken when moving these routines to new architectures.
|
|
*/
|
|
|
|
|
|
/*
|
|
* XDR null terminated ASCII strings
|
|
* xdr_string deals with "C strings" - arrays of bytes that are
|
|
* terminated by a NULL character. The parameter cpp references a
|
|
* pointer to storage; If the pointer is null, then the necessary
|
|
* storage is allocated. The last parameter is the max allowed length
|
|
* of the string as specified by a protocol.
|
|
*/
|
|
bool_t
|
|
xdr_string (xdrs, cpp, maxsize)
|
|
XDR *xdrs;
|
|
char **cpp;
|
|
u_int maxsize;
|
|
{
|
|
char *sp = *cpp; /* sp is the actual string pointer */
|
|
u_int size;
|
|
u_int nodesize;
|
|
|
|
/*
|
|
* first deal with the length since xdr strings are counted-strings
|
|
*/
|
|
switch (xdrs->x_op)
|
|
{
|
|
case XDR_FREE:
|
|
if (sp == NULL)
|
|
{
|
|
return TRUE; /* already free */
|
|
}
|
|
/* fall through... */
|
|
case XDR_ENCODE:
|
|
if (sp == NULL)
|
|
return FALSE;
|
|
size = strlen (sp);
|
|
break;
|
|
case XDR_DECODE:
|
|
break;
|
|
}
|
|
if (!xdr_u_int (xdrs, &size))
|
|
{
|
|
return FALSE;
|
|
}
|
|
if (size > maxsize)
|
|
{
|
|
return FALSE;
|
|
}
|
|
nodesize = size + 1;
|
|
if (nodesize == 0)
|
|
{
|
|
/* This means an overflow. It a bug in the caller which
|
|
provided a too large maxsize but nevertheless catch it
|
|
here. */
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* now deal with the actual bytes
|
|
*/
|
|
switch (xdrs->x_op)
|
|
{
|
|
case XDR_DECODE:
|
|
if (sp == NULL)
|
|
*cpp = sp = (char *) mem_alloc (nodesize);
|
|
if (sp == NULL)
|
|
{
|
|
(void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n"));
|
|
return FALSE;
|
|
}
|
|
sp[size] = 0;
|
|
/* fall into ... */
|
|
|
|
case XDR_ENCODE:
|
|
return xdr_opaque (xdrs, sp, size);
|
|
|
|
case XDR_FREE:
|
|
mem_free (sp, nodesize);
|
|
*cpp = NULL;
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
#ifdef EXPORT_RPC_SYMBOLS
|
|
libc_hidden_def (xdr_string)
|
|
#else
|
|
libc_hidden_nolink_sunrpc (xdr_string, GLIBC_2_0)
|
|
#endif
|
|
|
|
/*
|
|
* Wrapper for xdr_string that can be called directly from
|
|
* routines like clnt_call
|
|
*/
|
|
bool_t
|
|
xdr_wrapstring (xdrs, cpp)
|
|
XDR *xdrs;
|
|
char **cpp;
|
|
{
|
|
if (xdr_string (xdrs, cpp, LASTUNSIGNED))
|
|
{
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
#ifdef EXPORT_RPC_SYMBOLS
|
|
libc_hidden_def (xdr_wrapstring)
|
|
#else
|
|
libc_hidden_nolink_sunrpc (xdr_wrapstring, GLIBC_2_0)
|
|
#endif
|