sunrpc/rpc_clntout.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 or with the express written consent of
   8  * Sun Microsystems, Inc.
   9  *
  10  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  11  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  12  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  13  *
  14  * Sun RPC is provided with no support and without any obligation on the
  15  * part of Sun Microsystems, Inc. to assist in its use, correction,
  16  * modification or enhancement.
  17  *
  18  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  19  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  20  * OR ANY PART THEREOF.
  21  *
  22  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  23  * or profits or other special, indirect and consequential damages, even if
  24  * Sun has been advised of the possibility of such damages.
  25  *
  26  * Sun Microsystems, Inc.
  27  * 2550 Garcia Avenue
  28  * Mountain View, California  94043
  29  */
  30
  31 /*
  32  * From: @(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI
  33  */
  34 char clntout_rcsid[] =
  35   "$Id$";
  36
  37 /*
  38  * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
  39  * Copyright (C) 1987, Sun Microsystems, Inc.
  40  */
  41 #include <stdio.h>
  42 #include <string.h>
  43 #include <rpc/types.h>
  44 #include "rpc_parse.h"
  45 #include "rpc_util.h"
  46 #include "proto.h"
  47
  48 #define DEFAULT_TIMEOUT 25      /* in seconds */
  49 static const char RESULT[] = "clnt_res";
  50
  51 static void write_program (definition * def);
  52 static void printbody (proc_list * proc);
  53 static const char *ampr (const char *type);
  54 static void printbody (proc_list * proc);
  55
  56
  57 void
  58 write_stubs (void)
  59 {
  60   list *l;
  61   definition *def;
  62
  63   fprintf (fout,
  64            "\n/* Default timeout can be changed using clnt_control() */\n");
  65   fprintf (fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
  66            DEFAULT_TIMEOUT);
  67   for (l = defined; l != NULL; l = l->next)
  68     {
  69       def = (definition *) l->val;
  70       if (def->def_kind == DEF_PROGRAM)
  71         {
  72           write_program (def);
  73         }
  74     }
  75 }
  76
  77 static void
  78 write_program (definition * def)
  79 {
  80   version_list *vp;
  81   proc_list *proc;
  82
  83   for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
  84     {
  85       for (proc = vp->procs; proc != NULL; proc = proc->next)
  86         {
  87           fprintf (fout, "\n");
  88           if (mtflag == 0)
  89             {
  90               ptype (proc->res_prefix, proc->res_type, 1);
  91               fprintf (fout, "*\n");
  92               pvname (proc->proc_name, vp->vers_num);
  93               printarglist (proc, RESULT, "clnt", "CLIENT *");
  94             }
  95           else
  96             {
  97               fprintf (fout, "enum clnt_stat \n");
  98               pvname (proc->proc_name, vp->vers_num);
  99               printarglist (proc, RESULT, "clnt", "CLIENT *");
 100             }
 101           fprintf (fout, "{\n");
 102           printbody (proc);
 103           fprintf (fout, "}\n");
 104         }
 105     }
 106 }
 107
 108 /* Writes out declarations of procedure's argument list.
 109    In either ANSI C style, in one of old rpcgen style (pass by reference),
 110    or new rpcgen style (multiple arguments, pass by value);
 111  */
 112
 113 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
 114
 115 void
 116 printarglist (proc_list * proc,  const char *result,
 117               const char *addargname, const char *addargtype)
 118 {
 119
 120   decl_list *l;
 121
 122   if (!newstyle)
 123     { /* old style: always pass argument by reference */
 124       if (Cflag)
 125         {                       /* C++ style heading */
 126           fprintf (fout, "(");
 127           ptype (proc->args.decls->decl.prefix,
 128                  proc->args.decls->decl.type, 1);
 129
 130           if (mtflag)
 131             {/* Generate result field */
 132               fprintf (fout, "*argp, ");
 133               ptype(proc->res_prefix, proc->res_type, 1);
 134               fprintf (fout, "*%s, %s%s)\n", result, addargtype, addargname);
 135             }
 136           else
 137             fprintf (fout, "*argp, %s%s)\n", addargtype, addargname);
 138         }
 139       else
 140         {
 141           if (!mtflag)
 142             fprintf (fout, "(argp, %s)\n", addargname);
 143           else
 144             fprintf (fout, "(argp, %s, %s)\n", result, addargname);
 145           fprintf (fout, "\t");
 146           ptype (proc->args.decls->decl.prefix,
 147                  proc->args.decls->decl.type, 1);
 148           fprintf (fout, "*argp;\n");
 149           if (mtflag)
 150             {
 151               fprintf (fout, "\t");
 152               ptype (proc->res_prefix, proc->res_type, 1);
 153               fprintf (fout, "*%s;\n", result);
 154             }
 155         }
 156     }
 157   else if (streq (proc->args.decls->decl.type, "void"))
 158     {
 159       /* newstyle, 0 argument */
 160       if (mtflag)
 161         {
 162           fprintf (fout, "(");
 163           if (Cflag)
 164             {
 165               ptype(proc->res_prefix, proc->res_type, 1);
 166               fprintf (fout, "*%s, %s%s)\n", result, addargtype, addargname);
 167             }
 168           else
 169             fprintf (fout, "(%s)\n", addargname);
 170         }
 171       else if (Cflag)
 172         fprintf (fout, "(%s%s)\n", addargtype, addargname);
 173       else
 174         fprintf (fout, "(%s)\n", addargname);
 175     }
 176   else
 177     {
 178       /* new style, 1 or multiple arguments */
 179       if (!Cflag)
 180         {
 181           fprintf (fout, "(");
 182           for (l = proc->args.decls; l != NULL; l = l->next)
 183             fprintf (fout, "%s, ", l->decl.name);
 184           if (mtflag)
 185             fprintf (fout, "%s, ", result);
 186           fprintf (fout, "%s)\n", addargname);
 187           for (l = proc->args.decls; l != NULL; l = l->next)
 188             {
 189               pdeclaration (proc->args.argname, &l->decl, 1, ";\n");
 190             }
 191           if (mtflag)
 192             {
 193               fprintf (fout, "\t");
 194               ptype (proc->res_prefix, proc->res_type, 1);
 195               fprintf (fout, "*%s;\n", result);
 196             }
 197         }
 198       else
 199         {                       /* C++ style header */
 200           fprintf (fout, "(");
 201           for (l = proc->args.decls; l != NULL; l = l->next)
 202             {
 203               pdeclaration (proc->args.argname, &l->decl, 0, ", ");
 204             }
 205           if (mtflag)
 206             {
 207               ptype (proc->res_prefix, proc->res_type, 1);
 208               fprintf (fout, "*%s, ", result);
 209             }
 210           fprintf (fout, " %s%s)\n", addargtype, addargname);
 211         }
 212     }
 213
 214   if (!Cflag)
 215     fprintf (fout, "\t%s%s;\n", addargtype, addargname);
 216 }
 217
 218
 219 static
 220 const char *
 221 ampr (const char *type)
 222 {
 223   if (isvectordef (type, REL_ALIAS))
 224     {
 225       return "";
 226     }
 227   else
 228     {
 229       return "&";
 230     }
 231 }
 232
 233 static void
 234 printbody (proc_list * proc)
 235 {
 236   decl_list *l;
 237   bool_t args2 = (proc->arg_num > 1);
 238 /*  int i; */
 239
 240   /* For new style with multiple arguments, need a structure in which
 241      to stuff the arguments. */
 242   if (newstyle && args2)
 243     {
 244       fprintf (fout, "\t%s", proc->args.argname);
 245       fprintf (fout, " arg;\n");
 246     }
 247   if (!mtflag)
 248     {
 249       fprintf (fout, "\tstatic ");
 250       if (streq (proc->res_type, "void"))
 251         {
 252           fprintf (fout, "char ");
 253         }
 254       else
 255         {
 256           ptype (proc->res_prefix, proc->res_type, 0);
 257         }
 258       fprintf (fout, "%s;\n", RESULT);
 259       fprintf (fout, "\n");
 260       fprintf (fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n",
 261                ampr (proc->res_type), RESULT, RESULT);
 262     }
 263   if (newstyle && !args2 && (streq (proc->args.decls->decl.type, "void")))
 264     {
 265       /* newstyle, 0 arguments */
 266       if (mtflag)
 267         fprintf (fout, "\t return ");
 268       else
 269         fprintf (fout, "\t if ");
 270       fprintf (fout,
 271                "(clnt_call (clnt, %s, (xdrproc_t) xdr_void, ", proc->proc_name);
 272
 273       fprintf (fout,
 274                "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
 275                stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
 276                RESULT);
 277       if (mtflag)
 278         fprintf (fout, "\n\t\tTIMEOUT));\n\n");
 279       else
 280         fprintf (fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
 281     }
 282   else if (newstyle && args2)
 283     {
 284       /* newstyle, multiple arguments:  stuff arguments into structure */
 285       for (l = proc->args.decls; l != NULL; l = l->next)
 286         {
 287           fprintf (fout, "\targ.%s = %s;\n",
 288                    l->decl.name, l->decl.name);
 289         }
 290       if (mtflag)
 291         fprintf (fout, "\treturn ");
 292       else
 293         fprintf (fout, "\tif ");
 294
 295       fprintf (fout,
 296                "(clnt_call (clnt, %s, (xdrproc_t) xdr_%s", proc->proc_name,
 297                proc->args.argname);
 298       fprintf (fout,
 299                ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
 300                stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
 301                RESULT);
 302       if (mtflag)
 303         fprintf (fout, "\n\t\tTIMEOUT));\n");
 304       else
 305         fprintf (fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
 306     }
 307   else
 308     {                           /* single argument, new or old style */
 309       if (!mtflag)
 310         fprintf (fout,
 311                  "\tif (clnt_call (clnt, %s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\tTIMEOUT) != RPC_SUCCESS) {\n",
 312                  proc->proc_name,
 313                  stringfix (proc->args.decls->decl.type),
 314                  (newstyle ? "&" : ""),
 315                  (newstyle ? proc->args.decls->decl.name : "argp"),
 316                  stringfix (proc->res_type), ampr (proc->res_type),
 317                  RESULT);
 318       else
 319         fprintf(fout,
 320                 "\treturn (clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\tTIMEOUT));\n",
 321                 proc->proc_name,
 322                 stringfix (proc->args.decls->decl.type),
 323                 (newstyle ? "&" : ""),
 324                 (newstyle ? proc->args.decls->decl.name : "argp"),
 325                 stringfix (proc->res_type), "",
 326                 RESULT);
 327     }
 328   if (!mtflag)
 329     {
 330       fprintf (fout, "\t\treturn (NULL);\n");
 331       fprintf (fout, "\t}\n");
 332       if (streq (proc->res_type, "void"))
 333         {
 334           fprintf (fout, "\treturn ((void *)%s%s);\n",
 335                    ampr (proc->res_type), RESULT);
 336         }
 337       else
 338         {
 339           fprintf (fout, "\treturn (%s%s);\n", ampr (proc->res_type), RESULT);
 340         }
 341     }
 342 }