1009 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			1009 lines
		
	
	
		
			19 KiB
		
	
	
	
		
			C
		
	
	
	
| /*
 | |
|  * Copyright (c) 2009, Sun Microsystems, Inc.
 | |
|  * All rights reserved.
 | |
|  *
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|  * Redistribution and use in source and binary forms, with or without
 | |
|  * modification, are permitted provided that the following conditions are met:
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|  * - Redistributions of source code must retain the above copyright notice,
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|  *   this list of conditions and the following disclaimer.
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|  * - Redistributions in binary form must reproduce the above copyright notice,
 | |
|  *   this list of conditions and the following disclaimer in the documentation
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|  *   and/or other materials provided with the distribution.
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|  * - Neither the name of Sun Microsystems, Inc. nor the names of its
 | |
|  *   contributors may be used to endorse or promote products derived
 | |
|  *   from this software without specific prior written permission.
 | |
|  *
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|  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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|  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 | |
|  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 | |
|  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 | |
|  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 | |
|  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 | |
|  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 | |
|  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 | |
|  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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|  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 | |
|  * POSSIBILITY OF SUCH DAMAGE.
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|  */
 | |
| 
 | |
| /*
 | |
|  * xdr.c, Generic XDR routines implementation.
 | |
|  *
 | |
|  * 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
 | |
|  * most common data items.  See xdr.h for more info on the interface to
 | |
|  * xdr.
 | |
|  */
 | |
| 
 | |
| #include <stdlib.h>
 | |
| #include <string.h>
 | |
| #include <errno.h>
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| 
 | |
| #include <rpc/types.h>
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| #include <rpc/xdr.h>
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| 
 | |
| #include "xdr_private.h"
 | |
| 
 | |
| /*
 | |
|  * constants specific to the xdr "protocol"
 | |
|  */
 | |
| #define XDR_FALSE       ((long) 0)
 | |
| #define XDR_TRUE        ((long) 1)
 | |
| #define LASTUNSIGNED    ((u_int) 0-1)
 | |
| 
 | |
| /*
 | |
|  * for unit alignment
 | |
|  */
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| static const char xdr_zero[BYTES_PER_XDR_UNIT] = { 0, 0, 0, 0 };
 | |
| 
 | |
| /*
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|  * Free a data structure using XDR
 | |
|  * Not a filter, but a convenient utility nonetheless
 | |
|  */
 | |
| void
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| xdr_free (xdrproc_t proc,
 | |
| 	void * 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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| 
 | |
| /*
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|  * XDR nothing
 | |
|  */
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| bool_t
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| xdr_void (void)
 | |
| {
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|   return TRUE;
 | |
| }
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| 
 | |
| 
 | |
| /*
 | |
|  * XDR integers
 | |
|  */
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| bool_t
 | |
| xdr_int (XDR * xdrs,
 | |
| 	int * ip)
 | |
| {
 | |
| #if INT_MAX < LONG_MAX
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|   long l;
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|   switch (xdrs->x_op)
 | |
|     {
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|     case XDR_ENCODE:
 | |
|       l = (long) *ip;
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|       return (XDR_PUTLONG (xdrs, &l));
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETLONG (xdrs, &l))
 | |
|         {
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|           return FALSE;
 | |
|         }
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|       *ip = (int) l;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| #elif INT_MAX == LONG_MAX
 | |
|   return xdr_long (xdrs, (long *) ip);
 | |
| #else
 | |
| # error Unexpected integer sizes in xdr_int()
 | |
| #endif
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_int (XDR * xdrs,
 | |
| 	u_int * up)
 | |
| {
 | |
| #if UINT_MAX < ULONG_MAX
 | |
|   u_long l;
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       l = (u_long) * up;
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|       return (XDR_PUTLONG (xdrs, (long *) &l));
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETLONG (xdrs, (long *) &l))
 | |
|         {
 | |
|           return FALSE;
 | |
|         }
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|       *up = (u_int) (u_long) l;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| #elif UINT_MAX == ULONG_MAX
 | |
|   return xdr_u_long (xdrs, (u_long *) up);
 | |
| #else
 | |
| # error Unexpected integer sizes in xdr_int()
 | |
| #endif
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR long integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_long (XDR * xdrs,
 | |
| 	long * lp)
 | |
| {
 | |
|   if ((xdrs->x_op == XDR_ENCODE)
 | |
|       && ((sizeof (int32_t) == sizeof (long)) || ((int32_t) *lp == *lp)))
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|     return XDR_PUTLONG (xdrs, lp);
 | |
| 
 | |
|   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;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned long integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_long (XDR * xdrs,
 | |
| 	u_long * ulp)
 | |
| {
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       if ((sizeof (uint32_t) != sizeof (u_long)) && ((uint32_t) *ulp != *ulp))
 | |
|         return FALSE;
 | |
|       return (XDR_PUTLONG (xdrs, (long *) ulp));
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       {
 | |
|         long int tmp;
 | |
|         if (XDR_GETLONG (xdrs, &tmp) == FALSE)
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|           return FALSE;
 | |
|         *ulp = (u_long) (uint32_t) tmp;
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|         return TRUE;
 | |
|       }
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR 32-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_int32_t (XDR * xdrs,
 | |
| 	int32_t * int32_p)
 | |
| {
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       return XDR_PUTINT32 (xdrs, int32_p);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       return XDR_GETINT32(xdrs, int32_p);
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 32-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_int32_t (XDR * xdrs,
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| 	u_int32_t * u_int32_p)
 | |
| {
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       return XDR_PUTINT32 (xdrs, (int32_t *)u_int32_p);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       return XDR_GETINT32 (xdrs, (int32_t *)u_int32_p);
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 32-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_uint32_t (XDR * xdrs,
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| 	uint32_t * uint32_p)
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| {
 | |
|   switch (xdrs->x_op)
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|     {
 | |
|     case XDR_ENCODE:
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|       return XDR_PUTINT32 (xdrs, (int32_t *)uint32_p);
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| 
 | |
|     case XDR_DECODE:
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|       return XDR_GETINT32 (xdrs, (int32_t *)uint32_p);
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| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR short integers
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|  */
 | |
| bool_t
 | |
| xdr_short (XDR * xdrs,
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| 	short * sp)
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| {
 | |
|   long l;
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| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     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:
 | |
|       if (!XDR_GETLONG (xdrs, &l))
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|         return FALSE;
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|       *sp = (short) l;
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|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
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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,
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| 	u_short * usp)
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| {
 | |
|   long l;
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| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       l = (u_long) * usp;
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|       return XDR_PUTLONG (xdrs, &l);
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| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETLONG (xdrs, &l))
 | |
|         return FALSE;
 | |
|       *usp = (u_short) (u_long) l;
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|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR 16-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_int16_t (XDR * xdrs,
 | |
| 	int16_t * int16_p)
 | |
| {
 | |
|   int32_t t;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       t = (int32_t) *int16_p;
 | |
|       return XDR_PUTINT32 (xdrs, &t);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, &t))
 | |
|         return FALSE;
 | |
|       *int16_p = (int16_t) t;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 16-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_int16_t (XDR * xdrs,
 | |
| 	u_int16_t * u_int16_p)
 | |
| {
 | |
|   uint32_t ut;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       ut = (uint32_t) *u_int16_p;
 | |
|       return XDR_PUTINT32 (xdrs, (int32_t *)&ut);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, (int32_t *)&ut))
 | |
|         return FALSE;
 | |
|       *u_int16_p = (u_int16_t) ut;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 16-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_uint16_t (XDR * xdrs,
 | |
| 	uint16_t * uint16_p)
 | |
| {
 | |
|   uint32_t ut;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       ut = (uint32_t) *uint16_p;
 | |
|       return XDR_PUTINT32 (xdrs, (int32_t *)&ut);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, (int32_t *)&ut))
 | |
|         return FALSE;
 | |
|       *uint16_p = (uint16_t) ut;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR 8-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_int8_t (XDR * xdrs,
 | |
| 	int8_t * int8_p)
 | |
| {
 | |
|   int32_t t;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       t = (int32_t) *int8_p;
 | |
|       return XDR_PUTINT32 (xdrs, &t);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, &t))
 | |
|         return FALSE;
 | |
|       *int8_p = (int8_t) t;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 8-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_int8_t (XDR * xdrs,
 | |
| 	u_int8_t * u_int8_p)
 | |
| {
 | |
|   uint32_t ut;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       ut = (uint32_t) *u_int8_p;
 | |
|       return XDR_PUTINT32 (xdrs, (int32_t *)&ut);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, (int32_t *)&ut))
 | |
|         return FALSE;
 | |
|       *u_int8_p = (u_int8_t) ut;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 8-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_uint8_t (XDR * xdrs,
 | |
| 	uint8_t * uint8_p)
 | |
| {
 | |
|   uint32_t ut;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       ut = (uint32_t) *uint8_p;
 | |
|       return XDR_PUTINT32 (xdrs, (int32_t *)&ut);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, (int32_t *)&ut))
 | |
|         return FALSE;
 | |
|       *uint8_p = (uint8_t) ut;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| 
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR a char
 | |
|  */
 | |
| bool_t
 | |
| xdr_char (XDR * xdrs,
 | |
| 	char * cp)
 | |
| {
 | |
|   int i;
 | |
| 
 | |
|   i = (*cp);
 | |
|   if (!xdr_int (xdrs, &i))
 | |
|     return FALSE;
 | |
|   *cp = (char) i;
 | |
|   return TRUE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR an unsigned char
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_char (XDR * xdrs,
 | |
| 	u_char * ucp)
 | |
| {
 | |
|   u_int u;
 | |
| 
 | |
|   u = (*ucp);
 | |
|   if (!xdr_u_int (xdrs, &u))
 | |
|     return FALSE;
 | |
|   *ucp = (u_char) u;
 | |
|   return TRUE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR booleans
 | |
|  */
 | |
| bool_t
 | |
| xdr_bool (XDR * xdrs,
 | |
| 	bool_t * bp)
 | |
| {
 | |
|   long lb;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       lb = *bp ? XDR_TRUE : XDR_FALSE;
 | |
|       return XDR_PUTLONG (xdrs, &lb);
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETLONG (xdrs, &lb))
 | |
|         return FALSE;
 | |
|       *bp = (lb == XDR_FALSE) ? FALSE : TRUE;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR enumerations
 | |
|  */
 | |
| bool_t
 | |
| xdr_enum (XDR * xdrs,
 | |
| 	enum_t * ep)
 | |
| {
 | |
|   enum sizecheck
 | |
|   { SIZEVAL };                  /* used to find the size of an enum */
 | |
| 
 | |
|   /*
 | |
|    * enums are treated as ints
 | |
|    */
 | |
|   /* LINTED */ if (sizeof (enum sizecheck) == 4)
 | |
|     {
 | |
| #if INT_MAX < LONG_MAX
 | |
|       long l;
 | |
|       switch (xdrs->x_op)
 | |
|         {
 | |
|         case XDR_ENCODE:
 | |
|           l = (long) *ep;
 | |
|           return XDR_PUTLONG (xdrs, &l);
 | |
| 
 | |
|         case XDR_DECODE:
 | |
|           if (!XDR_GETLONG (xdrs, &l))
 | |
|             return FALSE;
 | |
|           *ep = l;
 | |
|         case XDR_FREE:
 | |
|           return TRUE;
 | |
|         }
 | |
| #else
 | |
|        return xdr_long (xdrs, (long *) (void *) ep);
 | |
| #endif
 | |
|     }
 | |
|   else /* LINTED */ if (sizeof (enum sizecheck) == sizeof (short))
 | |
|     {
 | |
|        return (xdr_short (xdrs, (short *) (void *) ep));
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR opaque data
 | |
|  * Allows the specification of a fixed size sequence of opaque bytes.
 | |
|  * cp points to the opaque object and cnt gives the byte length.
 | |
|  */
 | |
| bool_t
 | |
| xdr_opaque (XDR * xdrs,
 | |
| 	caddr_t cp,
 | |
| 	u_int cnt)
 | |
| {
 | |
|   u_int rndup;
 | |
|   static char crud[BYTES_PER_XDR_UNIT];
 | |
| 
 | |
|   /*
 | |
|    * if no data we are done
 | |
|    */
 | |
|   if (cnt == 0)
 | |
|     return TRUE;
 | |
| 
 | |
|   /*
 | |
|    * round byte count to full xdr units
 | |
|    */
 | |
|   rndup = cnt % BYTES_PER_XDR_UNIT;
 | |
|   if (rndup > 0)
 | |
|     rndup = BYTES_PER_XDR_UNIT - rndup;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETBYTES (xdrs, cp, cnt))
 | |
|         return FALSE;
 | |
|       if (rndup == 0)
 | |
|         return TRUE;
 | |
|       return XDR_GETBYTES (xdrs, (caddr_t) crud, rndup);
 | |
| 
 | |
|     case XDR_ENCODE:
 | |
|       if (!XDR_PUTBYTES (xdrs, cp, cnt))
 | |
|         return FALSE;
 | |
|       if (rndup == 0)
 | |
|         return TRUE;
 | |
|       return (XDR_PUTBYTES (xdrs, xdr_zero, rndup));
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * 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 (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 = mem_alloc (nodesize);
 | |
|       if (sp == NULL)
 | |
|         {
 | |
|           xdr_warnx ("xdr_bytes: out of memory");
 | |
|           errno = ENOMEM;
 | |
|           return FALSE;
 | |
|         }
 | |
|       /* FALLTHROUGH */
 | |
| 
 | |
|     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;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Implemented here due to commonality of the object.
 | |
|  */
 | |
| bool_t
 | |
| xdr_netobj (XDR * xdrs,
 | |
| 	struct netobj * np)
 | |
| {
 | |
|   return (xdr_bytes (xdrs, &np->n_bytes, &np->n_len, MAX_NETOBJ_SZ));
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR a descriminated 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.
 | |
|  *   dscmp:    enum to decide which arm to work on
 | |
|  *   unp:      ptr to the union itself
 | |
|  *   choices:  ptr to array of [value, xdr proc] for each arm
 | |
|  *   dfault:   default xdr routine
 | |
|  */
 | |
| bool_t
 | |
| xdr_union (XDR * xdrs,
 | |
|         enum_t * dscmp,
 | |
|         char * unp,
 | |
|         const struct xdr_discrim * choices,
 | |
|         xdrproc_t dfault)
 | |
| {
 | |
|   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));
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * 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 (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 */
 | |
| 
 | |
|       /* FALLTHROUGH */
 | |
|     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 = mem_alloc (nodesize);
 | |
|       if (sp == NULL)
 | |
|         {
 | |
|           xdr_warnx ("xdr_string: out of memory");
 | |
|           errno = ENOMEM;
 | |
|           return FALSE;
 | |
|         }
 | |
|       sp[size] = 0;
 | |
|       /* FALLTHROUGH */
 | |
| 
 | |
|     case XDR_ENCODE:
 | |
|       return xdr_opaque (xdrs, sp, size);
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       mem_free (sp, nodesize);
 | |
|       *cpp = NULL;
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * Wrapper for xdr_string that can be called directly from
 | |
|  * routines like clnt_call
 | |
|  */
 | |
| bool_t
 | |
| xdr_wrapstring (XDR * xdrs,
 | |
|         char ** cpp)
 | |
| {
 | |
|   return xdr_string (xdrs, cpp, LASTUNSIGNED);
 | |
| }
 | |
| 
 | |
| 
 | |
| #if defined(___int64_t_defined)
 | |
| /*
 | |
|  * NOTE: xdr_hyper(), xdr_u_hyper(), xdr_longlong_t(), and xdr_u_longlong_t()
 | |
|  * are in the "non-portable" section because they require that a `long long'
 | |
|  * be a 64-bit type.
 | |
|  *
 | |
|  * --thorpej@netbsd.org, November 30, 1999
 | |
|  */
 | |
| 
 | |
| /*
 | |
|  * XDR 64-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_int64_t (XDR * xdrs,
 | |
|         int64_t * llp)
 | |
| {
 | |
|   int32_t t1, t2;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       t1 = (int32_t) ((*llp) >> 32);
 | |
|       t2 = (int32_t) (*llp);
 | |
|       return (XDR_PUTINT32 (xdrs, &t1) && XDR_PUTINT32 (xdrs, &t2));
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, &t1) || !XDR_GETINT32 (xdrs, &t2))
 | |
|         return FALSE;
 | |
|       *llp = ((int64_t) t1) << 32;
 | |
|       *llp |= (uint32_t) t2;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 64-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_int64_t (XDR * xdrs,
 | |
|         u_int64_t * ullp)
 | |
| {
 | |
|   uint32_t t1, t2;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       t1 = (uint32_t) ((*ullp) >> 32);
 | |
|       t2 = (uint32_t) (*ullp);
 | |
|       return (XDR_PUTINT32 (xdrs, (int32_t *)&t1) &&
 | |
|               XDR_PUTINT32 (xdrs, (int32_t *)&t2));
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, (int32_t *)&t1) ||
 | |
|           !XDR_GETINT32 (xdrs, (int32_t *)&t2))
 | |
|         return FALSE;
 | |
|       *ullp = ((u_int64_t) t1) << 32;
 | |
|       *ullp |= t2;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned 64-bit integers
 | |
|  */
 | |
| bool_t
 | |
| xdr_uint64_t (XDR * xdrs,
 | |
|         uint64_t * ullp)
 | |
| {
 | |
|   uint32_t t1, t2;
 | |
| 
 | |
|   switch (xdrs->x_op)
 | |
|     {
 | |
|     case XDR_ENCODE:
 | |
|       t1 = (uint32_t) ((*ullp) >> 32);
 | |
|       t2 = (uint32_t) (*ullp);
 | |
|       return (XDR_PUTINT32 (xdrs, (int32_t *)&t1) &&
 | |
|               XDR_PUTINT32 (xdrs, (int32_t *)&t2));
 | |
| 
 | |
|     case XDR_DECODE:
 | |
|       if (!XDR_GETINT32 (xdrs, (int32_t *)&t1) ||
 | |
|           !XDR_GETINT32 (xdrs, (int32_t *)&t2))
 | |
|         return FALSE;
 | |
|       *ullp = ((uint64_t) t1) << 32;
 | |
|       *ullp |= t2;
 | |
|       return TRUE;
 | |
| 
 | |
|     case XDR_FREE:
 | |
|       return TRUE;
 | |
|     }
 | |
|   return FALSE;
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR hypers
 | |
|  */
 | |
| bool_t
 | |
| xdr_hyper (XDR * xdrs,
 | |
|         quad_t * llp)
 | |
| {
 | |
|   /*
 | |
|    * Don't bother open-coding this; it's a fair amount of code.  Just
 | |
|    * call xdr_int64_t().
 | |
|    */
 | |
|   return (xdr_int64_t (xdrs, (int64_t *) llp));
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR unsigned hypers
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_hyper (XDR * xdrs,
 | |
|         u_quad_t * ullp)
 | |
| {
 | |
|   /*
 | |
|    * Don't bother open-coding this; it's a fair amount of code.  Just
 | |
|    * call xdr_uint64_t().
 | |
|    */
 | |
|   return (xdr_uint64_t (xdrs, (uint64_t *) ullp));
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR longlong_t's
 | |
|  */
 | |
| bool_t
 | |
| xdr_longlong_t (XDR * xdrs,
 | |
|         quad_t * llp)
 | |
| {
 | |
|   /*
 | |
|    * Don't bother open-coding this; it's a fair amount of code.  Just
 | |
|    * call xdr_int64_t().
 | |
|    */
 | |
|   return (xdr_int64_t (xdrs, (int64_t *) llp));
 | |
| }
 | |
| 
 | |
| 
 | |
| /*
 | |
|  * XDR u_longlong_t's
 | |
|  */
 | |
| bool_t
 | |
| xdr_u_longlong_t (XDR * xdrs,
 | |
|         u_quad_t *ullp)
 | |
| {
 | |
|   /*
 | |
|    * Don't bother open-coding this; it's a fair amount of code.  Just
 | |
|    * call xdr_u_int64_t().
 | |
|    */
 | |
|   return (xdr_uint64_t (xdrs, (uint64_t *) ullp));
 | |
| }
 | |
| 
 | |
| #endif /* ___int64_t_defined */
 | |
| 
 |