rpc_callmsg.c

Go to the documentation of this file.

/*
 * Copyright (c) 2009, Sun Microsystems, Inc.
 * All rights reserved.
 *
 * 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 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.
 *
 * 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.
 */
 
/*
 * rpc_callmsg.c
 *
 * Copyright (C) 1984, Sun Microsystems, Inc.
 *
 */
 
#include <wintirpc.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
 
#include <rpc/rpc.h>
#include <rpc/xdr.h>
 
//#include <sys/select.h>
 
/*
 * XDR a call message
 */
bool_t
xdr_callmsg(xdrs, cmsg)
    XDR *xdrs;
    struct rpc_msg *cmsg;
{
    int32_t *buf;
    struct opaque_auth *oa;
 
    assert(xdrs != NULL);
    assert(cmsg != NULL);
 
    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) {
            IXDR_PUT_INT32(buf, cmsg->rm_xid);
            IXDR_PUT_ENUM(buf, cmsg->rm_direction);
            if (cmsg->rm_direction != CALL) {
                return (FALSE);
            }
            IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers);
            if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
                return (FALSE);
            }
            IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog);
            IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers);
            IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc);
            oa = &cmsg->rm_call.cb_cred;
            IXDR_PUT_ENUM(buf, oa->oa_flavor);
            IXDR_PUT_INT32(buf, oa->oa_length);
            if (oa->oa_length) {
                memmove(buf, oa->oa_base, oa->oa_length);
                buf += RNDUP(oa->oa_length) / sizeof (int32_t);
            }
            oa = &cmsg->rm_call.cb_verf;
            IXDR_PUT_ENUM(buf, oa->oa_flavor);
            IXDR_PUT_INT32(buf, oa->oa_length);
            if (oa->oa_length) {
                memmove(buf, oa->oa_base, oa->oa_length);
                /* no real need....
                buf += RNDUP(oa->oa_length) / sizeof (int32_t);
                */
            }
            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_U_INT32(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_U_INT32(buf);
            if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) {
                return (FALSE);
            }
            cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf);
            cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf);
            cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf);
            oa = &cmsg->rm_call.cb_cred;
            oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t);
            oa->oa_length = (u_int)IXDR_GET_U_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);
                    if (oa->oa_base == NULL)
                        return (FALSE);
                }
                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 {
                    memmove(oa->oa_base, buf,
                        oa->oa_length);
                    /* no real need....
                    buf += RNDUP(oa->oa_length) /
                        sizeof (int32_t);
                    */
                }
            }
            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 = (u_int)IXDR_GET_U_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);
                    if (oa->oa_base == NULL)
                        return (FALSE);
                }
                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 {
                    memmove(oa->oa_base, buf,
                        oa->oa_length);
                    /* no real need...
                    buf += RNDUP(oa->oa_length) /
                        sizeof (int32_t);
                    */
                }
            }
            return (TRUE);
        }
    }
    if (
        xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) &&
        xdr_enum(xdrs, (enum_t *)&(cmsg->rm_direction)) &&
        (cmsg->rm_direction == CALL) &&
        xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_rpcvers)) &&
        (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) &&
        xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_prog)) &&
        xdr_u_int32_t(xdrs, &(cmsg->rm_call.cb_vers)) &&
        xdr_u_int32_t(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);
}