usr.bin/rpcgen/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.
   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  * @(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI
  30  */
  31
  32 #ident  "@(#)rpc_clntout.c      1.15    94/04/25 SMI"
  33
  34 /*
  35  * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
  36  * Copyright (C) 1987, Sun Microsytsems, Inc.
  37  */
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include <rpc/types.h>
  41 #include "rpc_parse.h"
  42 #include "rpc_util.h"
  43
  44 extern void pdeclaration __P(( char *, declaration *, int, char * ));
  45 void printarglist __P(( proc_list *, char *, char *, char *));
  46 static void write_program __P(( definition * ));
  47 static void printbody __P(( proc_list * ));
  48
  49 static char RESULT[] = "clnt_res";
  50
  51
  52 #define DEFAULT_TIMEOUT 25      /* in seconds */
  53
  54
  55 void
  56 write_stubs()
  57 {
  58         list *l;
  59         definition *def;
  60
  61         f_print(fout,
  62                 "\n/* Default timeout can be changed using clnt_control() */\n");
  63         f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
  64                 DEFAULT_TIMEOUT);
  65         for (l = defined; l != NULL; l = l->next) {
  66                 def = (definition *) l->val;
  67                 if (def->def_kind == DEF_PROGRAM) {
  68                         write_program(def);
  69                 }
  70         }
  71 }
  72
  73 static void
  74 write_program(def)
  75         definition *def;
  76 {
  77         version_list *vp;
  78         proc_list *proc;
  79
  80         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  81                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
  82                         f_print(fout, "\n");
  83                         if (mtflag == 0) {
  84                                 ptype(proc->res_prefix, proc->res_type, 1);
  85                                 f_print(fout, "*\n");
  86                                 pvname(proc->proc_name, vp->vers_num);
  87                                 printarglist(proc, RESULT, "clnt", "CLIENT *");
  88                         } else {
  89                                 f_print(fout, "enum clnt_stat \n");
  90                                 pvname(proc->proc_name, vp->vers_num);
  91                                 printarglist(proc, RESULT,  "clnt", "CLIENT *");
  92
  93                         }
  94                         f_print(fout, "{\n");
  95                         printbody(proc);
  96
  97                         f_print(fout, "}\n");
  98                 }
  99         }
 100 }
 101
 102 /*
 103  * Writes out declarations of procedure's argument list.
 104  * In either ANSI C style, in one of old rpcgen style (pass by reference),
 105  * or new rpcgen style (multiple arguments, pass by value);
 106  */
 107
 108 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
 109
 110 void printarglist(proc, result, addargname, addargtype)
 111         proc_list *proc;
 112         char *result;
 113         char* addargname, * addargtype;
 114 {
 115
 116         decl_list *l;
 117
 118         if (!newstyle) {
 119                 /* old style: always pass argument by reference */
 120                 if (Cflag) {    /* C++ style heading */
 121                         f_print(fout, "(");
 122                         ptype(proc->args.decls->decl.prefix,
 123                               proc->args.decls->decl.type, 1);
 124
 125                         if (mtflag) {/* Generate result field */
 126                                 f_print(fout, "*argp, ");
 127                                 ptype(proc->res_prefix, proc->res_type, 1);
 128                                 f_print(fout, "*%s, %s%s)\n",
 129                                         result, addargtype, addargname);
 130                         } else
 131                                 f_print(fout, "*argp, %s%s)\n", addargtype, addargname);
 132                 } else {
 133                         if (!mtflag)
 134                                 f_print(fout, "(argp, %s)\n", addargname);
 135                         else
 136                                 f_print(fout, "(argp, %s, %s)\n",
 137                                         result, addargname);
 138                         f_print(fout, "\t");
 139                         ptype(proc->args.decls->decl.prefix,
 140                               proc->args.decls->decl.type, 1);
 141                         f_print(fout, "*argp;\n");
 142                         if (mtflag) {
 143                                 f_print(fout, "\t");
 144                                 ptype(proc->res_prefix, proc->res_type, 1);
 145                                 f_print(fout, "*%s;\n", result);
 146                         }
 147                 }
 148         } else if (streq(proc->args.decls->decl.type, "void")) {
 149                 /* newstyle, 0 argument */
 150                 if (mtflag) {
 151                                 f_print(fout, "(");
 152
 153
 154                         if (Cflag) {
 155                                 ptype(proc->res_prefix, proc->res_type, 1);
 156                                 f_print(fout, "*%s, %s%s)\n",
 157                                         result, addargtype, addargname);
 158                         }
 159                         else
 160                                 f_print(fout, "(%s)\n", addargname);
 161
 162                 } else
 163                 if (Cflag)
 164                         f_print(fout, "(%s%s)\n", addargtype, addargname);
 165                 else
 166                         f_print(fout, "(%s)\n", addargname);
 167         } else {
 168                 /* new style, 1 or multiple arguments */
 169                 if (!Cflag) {
 170                         f_print(fout, "(");
 171                         for (l = proc->args.decls;  l != NULL; l = l->next)
 172                                 f_print(fout, "%s, ", l->decl.name);
 173                         if (mtflag)
 174                                 f_print(fout, "%s, ", result);
 175
 176                         f_print(fout, "%s)\n", addargname);
 177                         for (l = proc->args.decls; l != NULL; l = l->next) {
 178                                 pdeclaration(proc->args.argname,
 179                                              &l->decl, 1, ";\n");
 180                         }
 181                         if (mtflag) {
 182                                 f_print(fout, "\t");
 183                                 ptype(proc->res_prefix, proc->res_type, 1);
 184                                 f_print(fout, "*%s;\n", result);
 185                         }
 186
 187                 } else {        /* C++ style header */
 188                         f_print(fout, "(");
 189                         for (l = proc->args.decls; l != NULL; l = l->next) {
 190                                 pdeclaration(proc->args.argname, &l->decl, 0,
 191                                              ", ");
 192                         }
 193                         if (mtflag) {
 194                                 ptype(proc->res_prefix, proc->res_type, 1);
 195                                 f_print(fout, "*%s, ", result);
 196
 197                         }
 198                         f_print(fout, "%s%s)\n", addargtype, addargname);
 199                 }
 200         }
 201
 202         if (!Cflag)
 203                 f_print(fout, "\t%s%s;\n", addargtype, addargname);
 204 }
 205
 206
 207
 208 static char *
 209 ampr(type)
 210         char *type;
 211 {
 212         if (isvectordef(type, REL_ALIAS)) {
 213                 return ("");
 214         } else {
 215                 return ("&");
 216         }
 217 }
 218
 219 static void
 220 printbody(proc)
 221         proc_list *proc;
 222 {
 223         decl_list *l;
 224         bool_t args2 = (proc->arg_num > 1);
 225
 226         /*
 227          * For new style with multiple arguments, need a structure in which
 228          *  to stuff the arguments.
 229          */
 230
 231
 232         if (newstyle && args2) {
 233                 f_print(fout, "\t%s", proc->args.argname);
 234                 f_print(fout, " arg;\n");
 235         }
 236         if (!mtflag) {
 237                 f_print(fout, "\tstatic ");
 238                 if (streq(proc->res_type, "void")) {
 239                         f_print(fout, "char ");
 240                 } else {
 241                         ptype(proc->res_prefix, proc->res_type, 0);
 242                 }
 243                 f_print(fout, "%s;\n", RESULT);
 244                 f_print(fout, "\n");
 245                 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n",
 246                         ampr(proc->res_type), RESULT, RESULT);
 247
 248         }
 249         if (newstyle && !args2 &&
 250             (streq(proc->args.decls->decl.type, "void"))) {
 251                 /* newstyle, 0 arguments */
 252
 253                 if (mtflag)
 254                         f_print(fout, "\t return ");
 255                 else
 256                         f_print(fout, "\t if ");
 257
 258                 f_print(fout,
 259                         "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ",
 260                         proc->proc_name);
 261                 f_print(fout,
 262                         "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
 263                         stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
 264                         RESULT);
 265
 266                 if (mtflag)
 267                         f_print(fout, "\n\t\tTIMEOUT));\n");
 268                 else
 269                         f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
 270
 271         } else if (newstyle && args2) {
 272                 /*
 273                  * Newstyle, multiple arguments
 274                  * stuff arguments into structure
 275                  */
 276                 for (l = proc->args.decls;  l != NULL; l = l->next) {
 277                         f_print(fout, "\targ.%s = %s;\n",
 278                                 l->decl.name, l->decl.name);
 279                 }
 280                 if (mtflag)
 281                         f_print(fout, "\treturn ");
 282                 else
 283                         f_print(fout, "\tif ");
 284                 f_print(fout,
 285                         "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s",
 286                         proc->proc_name,proc->args.argname);
 287                 f_print(fout,
 288                         ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
 289                         stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
 290                         RESULT);
 291                 if (mtflag)
 292                         f_print(fout, "\n\t\tTIMEOUT));\n");
 293                 else
 294                         f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
 295         } else {                /* single argument, new or old style */
 296                 if (!mtflag)
 297                         f_print(fout,
 298                         "\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",
 299                         proc->proc_name,
 300                         stringfix(proc->args.decls->decl.type),
 301                         (newstyle ? "&" : ""),
 302                         (newstyle ? proc->args.decls->decl.name : "argp"),
 303                         stringfix(proc->res_type), ampr(proc->res_type),
 304                         RESULT);
 305                 else
 306
 307                 f_print(fout,
 308                         "\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",
 309                         proc->proc_name,
 310                         stringfix(proc->args.decls->decl.type),
 311                         (newstyle ? "&" : ""),
 312                         (newstyle ? proc->args.decls->decl.name : "argp"),
 313                         stringfix(proc->res_type), "",
 314                         RESULT);
 315         }
 316         if (!mtflag) {
 317                 f_print(fout, "\t\treturn (NULL);\n");
 318                 f_print(fout, "\t}\n");
 319
 320                 if (streq(proc->res_type, "void")) {
 321                         f_print(fout, "\treturn ((void *)%s%s);\n",
 322                                 ampr(proc->res_type), RESULT);
 323                 } else {
 324                         f_print(fout, "\treturn (%s%s);\n",
 325                                 ampr(proc->res_type), RESULT);
 326                 }
 327         }
 328 }