/*

 * rpc_callmsg.c

 *

 * Copyright (c) 2010, Oracle America, Inc.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials

 *       provided with the distribution.

 *     * Neither the name of the "Oracle America, Inc." nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 *   "AS IS" 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) ARISING IN ANY WAY OUT OF THE USE

 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include <string.h>

#include <sys/param.h>

#include <rpc/rpc.h>

#include <shlib-compat.h>

/*

 * XDR a call message

 */

bool_t

xdr_callmsg (XDR *xdrs, struct rpc_msg *cmsg)

{

  int32_t *buf;

  struct opaque_auth *oa;

  if (xdrs->x_op == XDR_ENCODE)

    {

      if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES)

	{

	  return (FALSE);

	}

      if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES)

	{

	  return (FALSE);

	}

      buf = XDR_INLINE (xdrs, 8 * BYTES_PER_XDR_UNIT

			+ RNDUP (cmsg->rm_call.cb_cred.oa_length)

			+ 2 * BYTES_PER_XDR_UNIT

			+ RNDUP (cmsg->rm_call.cb_verf.oa_length));

      if (buf != NULL)

	{

	  (void) IXDR_PUT_LONG (buf, cmsg->rm_xid);

	  (void) IXDR_PUT_ENUM (buf, cmsg->rm_direction);

	  if (cmsg->rm_direction != CALL)

	    return FALSE;

	  (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_rpcvers);

	  if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)

	    return FALSE;

	  (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_prog);

	  (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_vers);

	  (void) IXDR_PUT_LONG (buf, cmsg->rm_call.cb_proc);

	  oa = &cmsg->rm_call.cb_cred;

	  (void) IXDR_PUT_ENUM (buf, oa->oa_flavor);

	  (void) IXDR_PUT_INT32 (buf, oa->oa_length);

	  if (oa->oa_length)

	    {

	      memcpy ((caddr_t) buf, oa->oa_base, oa->oa_length);

	      buf = (int32_t *) ((char *) buf + RNDUP (oa->oa_length));

	    }

	  oa = &cmsg->rm_call.cb_verf;

	  (void) IXDR_PUT_ENUM (buf, oa->oa_flavor);

	  (void) IXDR_PUT_INT32 (buf, oa->oa_length);

	  if (oa->oa_length)

	    {

	      memcpy ((caddr_t) buf, oa->oa_base, oa->oa_length);

	      /* no real need....

		 buf = (long *) ((char *) buf + RNDUP(oa->oa_length));

	       */

	    }

	  return TRUE;

	}

    }

  if (xdrs->x_op == XDR_DECODE)

    {

      buf = XDR_INLINE (xdrs, 8 * BYTES_PER_XDR_UNIT);

      if (buf != NULL)

	{

	  cmsg->rm_xid = IXDR_GET_LONG (buf);

	  cmsg->rm_direction = IXDR_GET_ENUM (buf, enum msg_type);

	  if (cmsg->rm_direction != CALL)

	    {

	      return FALSE;

	    }

	  cmsg->rm_call.cb_rpcvers = IXDR_GET_LONG (buf);

	  if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION)

	    {

	      return FALSE;

	    }

	  cmsg->rm_call.cb_prog = IXDR_GET_LONG (buf);

	  cmsg->rm_call.cb_vers = IXDR_GET_LONG (buf);

	  cmsg->rm_call.cb_proc = IXDR_GET_LONG (buf);

	  oa = &cmsg->rm_call.cb_cred;

	  oa->oa_flavor = IXDR_GET_ENUM (buf, enum_t);

	  oa->oa_length = IXDR_GET_INT32 (buf);

	  if (oa->oa_length)

	    {

	      if (oa->oa_length > MAX_AUTH_BYTES)

		return FALSE;

	      if (oa->oa_base == NULL)

		{

		  oa->oa_base = (caddr_t)

		    mem_alloc (oa->oa_length);

		}

	      buf = XDR_INLINE (xdrs, RNDUP (oa->oa_length));

	      if (buf == NULL)

		{

		  if (xdr_opaque (xdrs, oa->oa_base,

				  oa->oa_length) == FALSE)

		    return FALSE;

		}

	      else

		{

		  memcpy (oa->oa_base, (caddr_t) buf, oa->oa_length);

		  /* no real need....

		     buf = (long *) ((char *) buf

		     + RNDUP(oa->oa_length));

		   */

		}

	    }

	  oa = &cmsg->rm_call.cb_verf;

	  buf = XDR_INLINE (xdrs, 2 * BYTES_PER_XDR_UNIT);

	  if (buf == NULL)

	    {

	      if (xdr_enum (xdrs, &oa->oa_flavor) == FALSE ||

		  xdr_u_int (xdrs, &oa->oa_length) == FALSE)

		{

		  return FALSE;

		}

	    }

	  else

	    {

	      oa->oa_flavor = IXDR_GET_ENUM (buf, enum_t);

	      oa->oa_length = IXDR_GET_INT32 (buf);

	    }

	  if (oa->oa_length)

	    {

	      if (oa->oa_length > MAX_AUTH_BYTES)

		return FALSE;

	      if (oa->oa_base == NULL)

		{

		  oa->oa_base = (caddr_t)

		    mem_alloc (oa->oa_length);

		}

	      buf = XDR_INLINE (xdrs, RNDUP (oa->oa_length));

	      if (buf == NULL)

		{

		  if (xdr_opaque (xdrs, oa->oa_base,

				  oa->oa_length) == FALSE)

		    return FALSE;

		}

	      else

		{

		  memcpy (oa->oa_base, (caddr_t) buf, oa->oa_length);

		  /* no real need...

		     buf = (long *) ((char *) buf

		     + RNDUP(oa->oa_length));

		   */

		}

	    }

	  return TRUE;

	}

    }

  if (

       xdr_u_long (xdrs, &(cmsg->rm_xid)) &&

       xdr_enum (xdrs, (enum_t *) & (cmsg->rm_direction)) &&

       (cmsg->rm_direction == CALL) &&

       xdr_u_long (xdrs, &(cmsg->rm_call.cb_rpcvers)) &&

       (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&

       xdr_u_long (xdrs, &(cmsg->rm_call.cb_prog)) &&

       xdr_u_long (xdrs, &(cmsg->rm_call.cb_vers)) &&

       xdr_u_long (xdrs, &(cmsg->rm_call.cb_proc)) &&

       xdr_opaque_auth (xdrs, &(cmsg->rm_call.cb_cred)))

    return xdr_opaque_auth (xdrs, &(cmsg->rm_call.cb_verf));

  return FALSE;

}

libc_hidden_nolink_sunrpc (xdr_callmsg, GLIBC_2_0)