lib/libc/rpc/clnt_raw.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  *
  29  * @(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro
  30  * @(#)clnt_raw.c       2.2 88/08/01 4.0 RPCSRC
  31  * $FreeBSD: src/lib/libc/rpc/clnt_raw.c,v 1.10 1999/08/28 00:00:36 peter Exp $
  32  * $DragonFly: src/lib/libc/rpc/clnt_raw.c,v 1.4 2005/11/13 12:27:04 swildner Exp $
  33  */
  34
  35 /*
  36  * clnt_raw.c
  37  *
  38  * Copyright (C) 1984, Sun Microsystems, Inc.
  39  *
  40  * Memory based rpc for simple testing and timing.
  41  * Interface to create an rpc client and server in the same process.
  42  * This lets us similate rpc and get round trip overhead, without
  43  * any interference from the kernal.
  44  */
  45
  46 #include <rpc/rpc.h>
  47 #include <stdlib.h>
  48 #include <stdio.h>
  49
  50 #define MCALL_MSG_SIZE 24
  51
  52 /*
  53  * This is the "network" we will be moving stuff over.
  54  */
  55 static struct clntraw_private {
  56         CLIENT  client_object;
  57         XDR     xdr_stream;
  58         char    _raw_buf[UDPMSGSIZE];
  59         char    mashl_callmsg[MCALL_MSG_SIZE];
  60         u_int   mcnt;
  61 } *clntraw_private;
  62
  63 static enum clnt_stat   clntraw_call();
  64 static void             clntraw_abort();
  65 static void             clntraw_geterr();
  66 static bool_t           clntraw_freeres();
  67 static bool_t           clntraw_control();
  68 static void             clntraw_destroy();
  69
  70 static struct clnt_ops client_ops = {
  71         clntraw_call,
  72         clntraw_abort,
  73         clntraw_geterr,
  74         clntraw_freeres,
  75         clntraw_destroy,
  76         clntraw_control
  77 };
  78
  79 void    svc_getreq();
  80
  81 /*
  82  * Create a client handle for memory based rpc.
  83  */
  84 CLIENT *
  85 clntraw_create(u_long prog, u_long vers)
  86 {
  87         struct clntraw_private *clp = clntraw_private;
  88         struct rpc_msg call_msg;
  89         XDR *xdrs = &clp->xdr_stream;
  90         CLIENT  *client = &clp->client_object;
  91
  92         if (clp == 0) {
  93                 clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
  94                 if (clp == 0)
  95                         return (0);
  96                 clntraw_private = clp;
  97         }
  98         /*
  99          * pre-serialize the static part of the call msg and stash it away
 100          */
 101         call_msg.rm_direction = CALL;
 102         call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 103         call_msg.rm_call.cb_prog = prog;
 104         call_msg.rm_call.cb_vers = vers;
 105         xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
 106         if (! xdr_callhdr(xdrs, &call_msg)) {
 107                 perror("clnt_raw.c - Fatal header serialization error.");
 108         }
 109         clp->mcnt = XDR_GETPOS(xdrs);
 110         XDR_DESTROY(xdrs);
 111
 112         /*
 113          * Set xdrmem for client/server shared buffer
 114          */
 115         xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
 116
 117         /*
 118          * create client handle
 119          */
 120         client->cl_ops = &client_ops;
 121         client->cl_auth = authnone_create();
 122         return (client);
 123 }
 124
 125 static enum clnt_stat
 126 clntraw_call(CLIENT *h, u_long proc, xdrproc_t xargs, caddr_t argsp,
 127              xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
 128 {
 129         struct clntraw_private *clp = clntraw_private;
 130         XDR *xdrs = &clp->xdr_stream;
 131         struct rpc_msg msg;
 132         enum clnt_stat status;
 133         struct rpc_err error;
 134
 135         if (clp == 0)
 136                 return (RPC_FAILED);
 137 call_again:
 138         /*
 139          * send request
 140          */
 141         xdrs->x_op = XDR_ENCODE;
 142         XDR_SETPOS(xdrs, 0);
 143         ((struct rpc_msg *)clp->mashl_callmsg)->rm_xid ++ ;
 144         if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
 145             (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
 146             (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
 147             (! (*xargs)(xdrs, argsp))) {
 148                 return (RPC_CANTENCODEARGS);
 149         }
 150         XDR_GETPOS(xdrs);  /* called just to cause overhead */
 151
 152         /*
 153          * We have to call server input routine here because this is
 154          * all going on in one process. Yuk.
 155          */
 156         svc_getreq(1);
 157
 158         /*
 159          * get results
 160          */
 161         xdrs->x_op = XDR_DECODE;
 162         XDR_SETPOS(xdrs, 0);
 163         msg.acpted_rply.ar_verf = _null_auth;
 164         msg.acpted_rply.ar_results.where = resultsp;
 165         msg.acpted_rply.ar_results.proc = xresults;
 166         if (! xdr_replymsg(xdrs, &msg))
 167                 return (RPC_CANTDECODERES);
 168         _seterr_reply(&msg, &error);
 169         status = error.re_status;
 170
 171         if (status == RPC_SUCCESS) {
 172                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 173                         status = RPC_AUTHERROR;
 174                 }
 175         }  /* end successful completion */
 176         else {
 177                 if (AUTH_REFRESH(h->cl_auth))
 178                         goto call_again;
 179         }  /* end of unsuccessful completion */
 180
 181         if (status == RPC_SUCCESS) {
 182                 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
 183                         status = RPC_AUTHERROR;
 184                 }
 185                 if (msg.acpted_rply.ar_verf.oa_base != NULL) {
 186                         xdrs->x_op = XDR_FREE;
 187                         xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
 188                 }
 189         }
 190
 191         return (status);
 192 }
 193
 194 static void
 195 clntraw_geterr(void)
 196 {
 197 }
 198
 199
 200 static bool_t
 201 clntraw_freeres(CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
 202 {
 203         struct clntraw_private *clp = clntraw_private;
 204         XDR *xdrs = &clp->xdr_stream;
 205         bool_t rval;
 206
 207         if (clp == 0)
 208         {
 209                 rval = (bool_t) RPC_FAILED;
 210                 return (rval);
 211         }
 212         xdrs->x_op = XDR_FREE;
 213         return ((*xdr_res)(xdrs, res_ptr));
 214 }
 215
 216 static void
 217 clntraw_abort(void)
 218 {
 219 }
 220
 221 static bool_t
 222 clntraw_control(void)
 223 {
 224         return (FALSE);
 225 }
 226
 227 static void
 228 clntraw_destroy(void)
 229 {
 230 }