clnt_raw.c revision 1.16
1 /* $NetBSD: clnt_raw.c,v 1.16 2000/01/22 22:19:17 mycroft Exp $ */ 2 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char *sccsid = "@(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro"; 36 static char *sccsid = "@(#)clnt_raw.c 2.2 88/08/01 4.0 RPCSRC"; 37 #else 38 __RCSID("$NetBSD: clnt_raw.c,v 1.16 2000/01/22 22:19:17 mycroft Exp $"); 39 #endif 40 #endif 41 42 /* 43 * clnt_raw.c 44 * 45 * Copyright (C) 1984, Sun Microsystems, Inc. 46 * 47 * Memory based rpc for simple testing and timing. 48 * Interface to create an rpc client and server in the same process. 49 * This lets us similate rpc and get round trip overhead, without 50 * any interference from the kernal. 51 */ 52 53 #include "namespace.h" 54 55 #include <assert.h> 56 #include <err.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 60 #include <rpc/rpc.h> 61 62 #ifdef __weak_alias 63 __weak_alias(clntraw_create,_clntraw_create) 64 #endif 65 66 #define MCALL_MSG_SIZE 24 67 68 /* 69 * This is the "network" we will be moving stuff over. 70 */ 71 static struct clntraw_private { 72 CLIENT client_object; 73 XDR xdr_stream; 74 char _raw_buf[UDPMSGSIZE]; 75 union { 76 struct rpc_msg mashl_rpcmsg; 77 char mashl_callmsg[MCALL_MSG_SIZE]; 78 } u; 79 u_int mcnt; 80 } *clntraw_private; 81 82 83 84 static enum clnt_stat clntraw_call __P((CLIENT *, u_long, xdrproc_t, 85 caddr_t, xdrproc_t, caddr_t, struct timeval)); 86 static void clntraw_geterr __P((CLIENT *, struct rpc_err *)); 87 static bool_t clntraw_freeres __P((CLIENT *, xdrproc_t, caddr_t)); 88 static void clntraw_abort __P((CLIENT *)); 89 static bool_t clntraw_control __P((CLIENT *, u_int, char *)); 90 static void clntraw_destroy __P((CLIENT *)); 91 92 static const struct clnt_ops client_ops = { 93 clntraw_call, 94 clntraw_abort, 95 clntraw_geterr, 96 clntraw_freeres, 97 clntraw_destroy, 98 clntraw_control 99 }; 100 101 /* 102 * Create a client handle for memory based rpc. 103 */ 104 CLIENT * 105 clntraw_create(prog, vers) 106 u_long prog; 107 u_long vers; 108 { 109 struct clntraw_private *clp = clntraw_private; 110 struct rpc_msg call_msg; 111 XDR *xdrs = &clp->xdr_stream; 112 CLIENT *client = &clp->client_object; 113 114 if (clp == 0) { 115 clp = (struct clntraw_private *)calloc(1, sizeof (*clp)); 116 if (clp == 0) 117 return (0); 118 clntraw_private = clp; 119 } 120 /* 121 * pre-serialize the static part of the call msg and stash it away 122 */ 123 call_msg.rm_direction = CALL; 124 call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 125 /* XXX: prog and vers have been long historically :-( */ 126 call_msg.rm_call.cb_prog = (u_int32_t)prog; 127 call_msg.rm_call.cb_vers = (u_int32_t)vers; 128 xdrmem_create(xdrs, clp->u.mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE); 129 if (! xdr_callhdr(xdrs, &call_msg)) 130 warnx("clntraw_create - Fatal header serialization error."); 131 clp->mcnt = XDR_GETPOS(xdrs); 132 XDR_DESTROY(xdrs); 133 134 /* 135 * Set xdrmem for client/server shared buffer 136 */ 137 xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE); 138 139 /* 140 * create client handle 141 */ 142 client->cl_ops = &client_ops; 143 client->cl_auth = authnone_create(); 144 return (client); 145 } 146 147 /* ARGSUSED */ 148 static enum clnt_stat 149 clntraw_call(h, proc, xargs, argsp, xresults, resultsp, timeout) 150 CLIENT *h; 151 u_long proc; 152 xdrproc_t xargs; 153 caddr_t argsp; 154 xdrproc_t xresults; 155 caddr_t resultsp; 156 struct timeval timeout; 157 { 158 struct clntraw_private *clp = clntraw_private; 159 XDR *xdrs = &clp->xdr_stream; 160 struct rpc_msg msg; 161 enum clnt_stat status; 162 struct rpc_err error; 163 164 _DIAGASSERT(h != NULL); 165 166 if (clp == 0) 167 return (RPC_FAILED); 168 call_again: 169 /* 170 * send request 171 */ 172 xdrs->x_op = XDR_ENCODE; 173 XDR_SETPOS(xdrs, 0); 174 clp->u.mashl_rpcmsg.rm_xid ++ ; 175 if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) || 176 (! XDR_PUTLONG(xdrs, (long *)&proc)) || 177 (! AUTH_MARSHALL(h->cl_auth, xdrs)) || 178 (! (*xargs)(xdrs, argsp))) { 179 return (RPC_CANTENCODEARGS); 180 } 181 (void)XDR_GETPOS(xdrs); /* called just to cause overhead */ 182 183 /* 184 * We have to call server input routine here because this is 185 * all going on in one process. Yuk. 186 */ 187 svc_getreq(1); 188 189 /* 190 * get results 191 */ 192 xdrs->x_op = XDR_DECODE; 193 XDR_SETPOS(xdrs, 0); 194 msg.acpted_rply.ar_verf = _null_auth; 195 msg.acpted_rply.ar_results.where = resultsp; 196 msg.acpted_rply.ar_results.proc = xresults; 197 if (! xdr_replymsg(xdrs, &msg)) { 198 /* 199 * It's possible for xdr_replymsg() to fail partway 200 * through its attempt to decode the result from the 201 * server. If this happens, it will leave the reply 202 * structure partially populated with dynamically 203 * allocated memory. (This can happen if someone uses 204 * clntudp_bufcreate() to create a CLIENT handle and 205 * specifies a receive buffer size that is too small.) 206 * This memory must be free()ed to avoid a leak. 207 */ 208 int op = xdrs->x_op; 209 xdrs->x_op = XDR_FREE; 210 xdr_replymsg(xdrs, &msg); 211 xdrs->x_op = op; 212 return (RPC_CANTDECODERES); 213 } 214 _seterr_reply(&msg, &error); 215 status = error.re_status; 216 217 if (status == RPC_SUCCESS) { 218 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) { 219 status = RPC_AUTHERROR; 220 } 221 } /* end successful completion */ 222 else { 223 if (AUTH_REFRESH(h->cl_auth)) 224 goto call_again; 225 } /* end of unsuccessful completion */ 226 227 if (status == RPC_SUCCESS) { 228 if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) { 229 status = RPC_AUTHERROR; 230 } 231 if (msg.acpted_rply.ar_verf.oa_base != NULL) { 232 xdrs->x_op = XDR_FREE; 233 (void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf)); 234 } 235 } 236 237 return (status); 238 } 239 240 /*ARGSUSED*/ 241 static void 242 clntraw_geterr(cl, err) 243 CLIENT *cl; 244 struct rpc_err *err; 245 { 246 } 247 248 249 /* ARGSUSED */ 250 static bool_t 251 clntraw_freeres(cl, xdr_res, res_ptr) 252 CLIENT *cl; 253 xdrproc_t xdr_res; 254 caddr_t res_ptr; 255 { 256 struct clntraw_private *clp = clntraw_private; 257 XDR *xdrs = &clp->xdr_stream; 258 bool_t rval; 259 260 if (clp == 0) { 261 rval = (bool_t) RPC_FAILED; 262 return (rval); 263 } 264 xdrs->x_op = XDR_FREE; 265 return ((*xdr_res)(xdrs, res_ptr)); 266 } 267 268 /*ARGSUSED*/ 269 static void 270 clntraw_abort(cl) 271 CLIENT *cl; 272 { 273 } 274 275 /*ARGSUSED*/ 276 static bool_t 277 clntraw_control(cl, ui, str) 278 CLIENT *cl; 279 u_int ui; 280 char *str; 281 { 282 return (FALSE); 283 } 284 285 /*ARGSUSED*/ 286 static void 287 clntraw_destroy(cl) 288 CLIENT *cl; 289 { 290 } 291
Indexes created Mon Sep 29 21:09:56 GMT 2025