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
  30 #ident  "@(#)rpc_clntout.c      1.15    94/04/25 SMI"
  31
  32 #if 0
  33 #ifndef lint
  34 static char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI";
  35 #endif
  36 #endif
  37
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 /*
  42  * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
  43  * Copyright (C) 1987, Sun Microsytsems, Inc.
  44  */
  45 #include <stdio.h>
  46 #include <string.h>
  47 #include <rpc/types.h>
  48 #include "rpc_parse.h"
  49 #include "rpc_util.h"
  50
  51 extern void pdeclaration( char *, declaration *, int, char * );
  52 void printarglist( proc_list *, char *, char *, char *);
  53 static void write_program( definition * );
  54 static void printbody( proc_list * );
  55
  56 static char RESULT[] = "clnt_res";
  57
  58
  59 #define DEFAULT_TIMEOUT 25      /* in seconds */
  60
  61
  62 void
  63 write_stubs()
  64 {
  65         list *l;
  66         definition *def;
  67
  68         f_print(fout,
  69                 "\n/* Default timeout can be changed using clnt_control() */\n");
  70         f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
  71                 DEFAULT_TIMEOUT);
  72         for (l = defined; l != NULL; l = l->next) {
  73                 def = (definition *) l->val;
  74                 if (def->def_kind == DEF_PROGRAM) {
  75                         write_program(def);
  76                 }
  77         }
  78 }
  79
  80 static void
  81 write_program(def)
  82         definition *def;
  83 {
  84         version_list *vp;
  85         proc_list *proc;
  86
  87         for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
  88                 for (proc = vp->procs; proc != NULL; proc = proc->next) {
  89                         f_print(fout, "\n");
  90                         if (mtflag == 0) {
  91                                 ptype(proc->res_prefix, proc->res_type, 1);
  92                                 f_print(fout, "*\n");
  93                                 pvname(proc->proc_name, vp->vers_num);
  94                                 printarglist(proc, RESULT, "clnt", "CLIENT *");
  95                         } else {
  96                                 f_print(fout, "enum clnt_stat \n");
  97                                 pvname(proc->proc_name, vp->vers_num);
  98                                 printarglist(proc, RESULT,  "clnt", "CLIENT *");
  99
 100                         }
 101                         f_print(fout, "{\n");
 102                         printbody(proc);
 103
 104                         f_print(fout, "}\n");
 105                 }
 106         }
 107 }
 108
 109 /*
 110  * Writes out declarations of procedure's argument list.
 111  * In either ANSI C style, in one of old rpcgen style (pass by reference),
 112  * or new rpcgen style (multiple arguments, pass by value);
 113  */
 114
 115 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
 116
 117 void printarglist(proc, result, addargname, addargtype)
 118         proc_list *proc;
 119         char *result;
 120         char* addargname, * addargtype;
 121 {
 122
 123         decl_list *l;
 124
 125         if (!newstyle) {
 126                 /* old style: always pass argument by reference */
 127                 if (Cflag) {    /* C++ style heading */
 128                         f_print(fout, "(");
 129                         ptype(proc->args.decls->decl.prefix,
 130                               proc->args.decls->decl.type, 1);
 131
 132                         if (mtflag) {/* Generate result field */
 133                                 f_print(fout, "*argp, ");
 134                                 ptype(proc->res_prefix, proc->res_type, 1);
 135                                 f_print(fout, "*%s, %s%s)\n",
 136                                         result, addargtype, addargname);
 137                         } else
 138                                 f_print(fout, "*argp, %s%s)\n", addargtype, addargname);
 139                 } else {
 140                         if (!mtflag)
 141                                 f_print(fout, "(argp, %s)\n", addargname);
 142                         else
 143                                 f_print(fout, "(argp, %s, %s)\n",
 144                                         result, addargname);
 145                         f_print(fout, "\t");
 146                         ptype(proc->args.decls->decl.prefix,
 147                               proc->args.decls->decl.type, 1);
 148                         f_print(fout, "*argp;\n");
 149                         if (mtflag) {
 150                                 f_print(fout, "\t");
 151                                 ptype(proc->res_prefix, proc->res_type, 1);
 152                                 f_print(fout, "*%s;\n", result);
 153                         }
 154                 }
 155         } else if (streq(proc->args.decls->decl.type, "void")) {
 156                 /* newstyle, 0 argument */
 157                 if (mtflag) {
 158                                 f_print(fout, "(");
 159
 160
 161                         if (Cflag) {
 162                                 ptype(proc->res_prefix, proc->res_type, 1);
 163                                 f_print(fout, "*%s, %s%s)\n",
 164                                         result, addargtype, addargname);
 165                         }
 166                         else
 167                                 f_print(fout, "(%s)\n", addargname);
 168
 169                 } else
 170                 if (Cflag)
 171                         f_print(fout, "(%s%s)\n", addargtype, addargname);
 172                 else
 173                         f_print(fout, "(%s)\n", addargname);
 174         } else {
 175                 /* new style, 1 or multiple arguments */
 176                 if (!Cflag) {
 177                         f_print(fout, "(");
 178                         for (l = proc->args.decls;  l != NULL; l = l->next)
 179                                 f_print(fout, "%s, ", l->decl.name);
 180                         if (mtflag)
 181                                 f_print(fout, "%s, ", result);
 182
 183                         f_print(fout, "%s)\n", addargname);
 184                         for (l = proc->args.decls; l != NULL; l = l->next) {
 185                                 pdeclaration(proc->args.argname,
 186                                              &l->decl, 1, ";\n");
 187                         }
 188                         if (mtflag) {
 189                                 f_print(fout, "\t");
 190                                 ptype(proc->res_prefix, proc->res_type, 1);
 191                                 f_print(fout, "*%s;\n", result);
 192                         }
 193
 194                 } else {        /* C++ style header */
 195                         f_print(fout, "(");
 196                         for (l = proc->args.decls; l != NULL; l = l->next) {
 197                                 pdeclaration(proc->args.argname, &l->decl, 0,
 198                                              ", ");
 199                         }
 200                         if (mtflag) {
 201                                 ptype(proc->res_prefix, proc->res_type, 1);
 202                                 f_print(fout, "*%s, ", result);
 203
 204                         }
 205                         f_print(fout, "%s%s)\n", addargtype, addargname);
 206                 }
 207         }
 208
 209         if (!Cflag)
 210                 f_print(fout, "\t%s%s;\n", addargtype, addargname);
 211 }
 212
 213
 214
 215 static char *
 216 ampr(type)
 217         char *type;
 218 {
 219         if (isvectordef(type, REL_ALIAS)) {
 220                 return ("");
 221         } else {
 222                 return ("&");
 223         }
 224 }
 225
 226 static void
 227 printbody(proc)
 228         proc_list *proc;
 229 {
 230         decl_list *l;
 231         bool_t args2 = (proc->arg_num > 1);
 232
 233         /*
 234          * For new style with multiple arguments, need a structure in which
 235          *  to stuff the arguments.
 236          */
 237
 238
 239         if (newstyle && args2) {
 240                 f_print(fout, "\t%s", proc->args.argname);
 241                 f_print(fout, " arg;\n");
 242         }
 243         if (!mtflag) {
 244                 f_print(fout, "\tstatic ");
 245                 if (streq(proc->res_type, "void")) {
 246                         f_print(fout, "char ");
 247                 } else {
 248                         ptype(proc->res_prefix, proc->res_type, 0);
 249                 }
 250                 f_print(fout, "%s;\n", RESULT);
 251                 f_print(fout, "\n");
 252                 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n",
 253                         ampr(proc->res_type), RESULT, RESULT);
 254
 255         }
 256         if (newstyle && !args2 &&
 257             (streq(proc->args.decls->decl.type, "void"))) {
 258                 /* newstyle, 0 arguments */
 259
 260                 if (mtflag)
 261                         f_print(fout, "\t return ");
 262                 else
 263                         f_print(fout, "\t if ");
 264
 265                 f_print(fout,
 266                         "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ",
 267                         proc->proc_name);
 268                 f_print(fout,
 269                         "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
 270                         stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
 271                         RESULT);
 272
 273                 if (mtflag)
 274                         f_print(fout, "\n\t\tTIMEOUT));\n");
 275                 else
 276                         f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
 277
 278         } else if (newstyle && args2) {
 279                 /*
 280                  * Newstyle, multiple arguments
 281                  * stuff arguments into structure
 282                  */
 283                 for (l = proc->args.decls;  l != NULL; l = l->next) {
 284                         f_print(fout, "\targ.%s = %s;\n",
 285                                 l->decl.name, l->decl.name);
 286                 }
 287                 if (mtflag)
 288                         f_print(fout, "\treturn ");
 289                 else
 290                         f_print(fout, "\tif ");
 291                 f_print(fout,
 292                         "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s",
 293                         proc->proc_name,proc->args.argname);
 294                 f_print(fout,
 295                         ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
 296                         stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
 297                         RESULT);
 298                 if (mtflag)
 299                         f_print(fout, "\n\t\tTIMEOUT));\n");
 300                 else
 301                         f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
 302         } else {                /* single argument, new or old style */
 303                 if (!mtflag)
 304                         f_print(fout,
 305                         "\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",
 306                         proc->proc_name,
 307                         stringfix(proc->args.decls->decl.type),
 308                         (newstyle ? "&" : ""),
 309                         (newstyle ? proc->args.decls->decl.name : "argp"),
 310                         stringfix(proc->res_type), ampr(proc->res_type),
 311                         RESULT);
 312                 else
 313
 314                 f_print(fout,
 315                         "\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",
 316                         proc->proc_name,
 317                         stringfix(proc->args.decls->decl.type),
 318                         (newstyle ? "&" : ""),
 319                         (newstyle ? proc->args.decls->decl.name : "argp"),
 320                         stringfix(proc->res_type), "",
 321                         RESULT);
 322         }
 323         if (!mtflag) {
 324                 f_print(fout, "\t\treturn (NULL);\n");
 325                 f_print(fout, "\t}\n");
 326
 327                 if (streq(proc->res_type, "void")) {
 328                         f_print(fout, "\treturn ((void *)%s%s);\n",
 329                                 ampr(proc->res_type), RESULT);
 330                 } else {
 331                         f_print(fout, "\treturn (%s%s);\n",
 332                                 ampr(proc->res_type), RESULT);
 333                 }
 334         }
 335 }