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