sunrpc/rpc_hout.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_hout.c 1.12 89/02/22 (C) 1987 SMI
  33  */
  34 char hout_rcsid[] =
  35   "$Id$";
  36
  37 /*
  38  * rpc_hout.c, Header file outputter for the RPC protocol compiler
  39  */
  40 #include <stdio.h>
  41 #include <ctype.h>
  42 #include "rpc_parse.h"
  43 #include "rpc_util.h"
  44 #include "proto.h"
  45
  46 static void pconstdef (definition * def);
  47 static void pargdef (definition * def);
  48 static void pstructdef (definition * def);
  49 static void puniondef (definition * def);
  50 static void pdefine (const char *name, const char *num);
  51 static int define_printed (proc_list * stop, version_list * start);
  52 static void pprogramdef (definition * def);
  53 static void parglist (proc_list * proc, const char *addargtype);
  54 static void penumdef (definition * def);
  55 static void ptypedef (definition * def);
  56 static int undefined2 (const char *type, const char *stop);
  57
  58 /* store away enough information to allow the XDR functions to be spat
  59     out at the end of the file */
  60
  61 static void
  62 storexdrfuncdecl (const char *name, int pointerp)
  63 {
  64   xdrfunc * xdrptr;
  65
  66   xdrptr = (xdrfunc *) malloc(sizeof (struct xdrfunc));
  67
  68   xdrptr->name = (char *)name;
  69   xdrptr->pointerp = pointerp;
  70   xdrptr->next = NULL;
  71
  72   if (xdrfunc_tail == NULL)
  73     {
  74       xdrfunc_head = xdrptr;
  75       xdrfunc_tail = xdrptr;
  76     }
  77   else
  78     {
  79       xdrfunc_tail->next = xdrptr;
  80       xdrfunc_tail = xdrptr;
  81     }
  82 }
  83
  84 /*
  85  * Print the C-version of an xdr definition
  86  */
  87 void
  88 print_datadef (definition *def)
  89 {
  90
  91   if (def->def_kind == DEF_PROGRAM)     /* handle data only */
  92     return;
  93
  94   if (def->def_kind != DEF_CONST)
  95     {
  96       f_print (fout, "\n");
  97     }
  98   switch (def->def_kind)
  99     {
 100     case DEF_STRUCT:
 101       pstructdef (def);
 102       break;
 103     case DEF_UNION:
 104       puniondef (def);
 105       break;
 106     case DEF_ENUM:
 107       penumdef (def);
 108       break;
 109     case DEF_TYPEDEF:
 110       ptypedef (def);
 111       break;
 112     case DEF_PROGRAM:
 113       pprogramdef (def);
 114       break;
 115     case DEF_CONST:
 116       pconstdef (def);
 117       break;
 118     }
 119   if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST)
 120     {
 121       storexdrfuncdecl(def->def_name,
 122                        def->def_kind != DEF_TYPEDEF ||
 123                        !isvectordef(def->def.ty.old_type,
 124                                     def->def.ty.rel));
 125     }
 126 }
 127
 128
 129 void
 130 print_funcdef (definition *def)
 131 {
 132   switch (def->def_kind)
 133     {
 134     case DEF_PROGRAM:
 135       f_print (fout, "\n");
 136       pprogramdef (def);
 137       break;
 138     default:
 139       break;
 140       /* ?... shouldn't happen I guess */
 141     }
 142 }
 143
 144 void
 145 print_xdr_func_def (char *name, int pointerp, int i)
 146 {
 147   if (i == 2)
 148     {
 149       f_print (fout, "extern bool_t xdr_%s ();\n", name);
 150       return;
 151     }
 152   else
 153     f_print(fout, "extern  bool_t xdr_%s (XDR *, %s%s);\n", name,
 154             name, pointerp ? "*" : "");
 155 }
 156
 157 static void
 158 pconstdef (definition *def)
 159 {
 160   pdefine (def->def_name, def->def.co);
 161 }
 162
 163 /* print out the definitions for the arguments of functions in the
 164    header file
 165  */
 166 static void
 167 pargdef (definition * def)
 168 {
 169   decl_list *l;
 170   version_list *vers;
 171   const char *name;
 172   proc_list *plist;
 173
 174   for (vers = def->def.pr.versions; vers != NULL; vers = vers->next)
 175     {
 176       for (plist = vers->procs; plist != NULL;
 177            plist = plist->next)
 178         {
 179
 180           if (!newstyle || plist->arg_num < 2)
 181             {
 182               continue;         /* old style or single args */
 183             }
 184           name = plist->args.argname;
 185           f_print (fout, "struct %s {\n", name);
 186           for (l = plist->args.decls;
 187                l != NULL; l = l->next)
 188             {
 189               pdeclaration (name, &l->decl, 1, ";\n");
 190             }
 191           f_print (fout, "};\n");
 192           f_print (fout, "typedef struct %s %s;\n", name, name);
 193           storexdrfuncdecl (name, 0);
 194           f_print (fout, "\n");
 195         }
 196     }
 197
 198 }
 199
 200 static void
 201 pstructdef (definition *def)
 202 {
 203   decl_list *l;
 204   const char *name = def->def_name;
 205
 206   f_print (fout, "struct %s {\n", name);
 207   for (l = def->def.st.decls; l != NULL; l = l->next)
 208     {
 209       pdeclaration (name, &l->decl, 1, ";\n");
 210     }
 211   f_print (fout, "};\n");
 212   f_print (fout, "typedef struct %s %s;\n", name, name);
 213 }
 214
 215 static void
 216 puniondef (definition *def)
 217 {
 218   case_list *l;
 219   const char *name = def->def_name;
 220   declaration *decl;
 221
 222   f_print (fout, "struct %s {\n", name);
 223   decl = &def->def.un.enum_decl;
 224   if (streq (decl->type, "bool"))
 225     {
 226       f_print (fout, "\tbool_t %s;\n", decl->name);
 227     }
 228   else
 229     {
 230       f_print (fout, "\t%s %s;\n", decl->type, decl->name);
 231     }
 232   f_print (fout, "\tunion {\n");
 233   for (l = def->def.un.cases; l != NULL; l = l->next)
 234     {
 235       if (l->contflag == 0)
 236         pdeclaration (name, &l->case_decl, 2, ";\n");
 237     }
 238   decl = def->def.un.default_decl;
 239   if (decl && !streq (decl->type, "void"))
 240     {
 241       pdeclaration (name, decl, 2, ";\n");
 242     }
 243   f_print (fout, "\t} %s_u;\n", name);
 244   f_print (fout, "};\n");
 245   f_print (fout, "typedef struct %s %s;\n", name, name);
 246 }
 247
 248 static void
 249 pdefine (const char *name, const char *num)
 250 {
 251   f_print (fout, "#define %s %s\n", name, num);
 252 }
 253
 254 static int
 255 define_printed (proc_list *stop, version_list *start)
 256 {
 257   version_list *vers;
 258   proc_list *proc;
 259
 260   for (vers = start; vers != NULL; vers = vers->next)
 261     {
 262       for (proc = vers->procs; proc != NULL; proc = proc->next)
 263         {
 264           if (proc == stop)
 265             {
 266               return 0;
 267             }
 268           else if (streq (proc->proc_name, stop->proc_name))
 269             {
 270               return 1;
 271             }
 272         }
 273     }
 274   abort ();
 275   /* NOTREACHED */
 276 }
 277
 278 static void
 279 pfreeprocdef (const char *name, const char *vers, int mode)
 280 {
 281   f_print (fout, "extern int ");
 282   pvname (name, vers);
 283   if (mode == 1)
 284     f_print (fout,"_freeresult (SVCXPRT *, xdrproc_t, caddr_t);\n");
 285   else
 286     f_print (fout,"_freeresult ();\n");
 287 }
 288
 289 static void
 290 pprogramdef (definition *def)
 291 {
 292   version_list *vers;
 293   proc_list *proc;
 294   int i;
 295   const char *ext;
 296
 297   pargdef (def);
 298
 299   pdefine (def->def_name, def->def.pr.prog_num);
 300   for (vers = def->def.pr.versions; vers != NULL; vers = vers->next)
 301     {
 302       if (tblflag)
 303         {
 304           f_print (fout, "extern struct rpcgen_table %s_%s_table[];\n",
 305                    locase (def->def_name), vers->vers_num);
 306           f_print (fout, "extern %s_%s_nproc;\n",
 307                    locase (def->def_name), vers->vers_num);
 308         }
 309       pdefine (vers->vers_name, vers->vers_num);
 310
 311       /*
 312        * Print out 2 definitions, one for ANSI-C, another for
 313        * old K & R C
 314        */
 315
 316       if(!Cflag)
 317         {
 318           ext = "extern  ";
 319           for (proc = vers->procs; proc != NULL;
 320                proc = proc->next)
 321             {
 322               if (!define_printed(proc, def->def.pr.versions))
 323                 {
 324                   pdefine (proc->proc_name, proc->proc_num);
 325                 }
 326               f_print (fout, "%s", ext);
 327               pprocdef (proc, vers, NULL, 0, 2);
 328
 329               if (mtflag)
 330                 {
 331                   f_print(fout, "%s", ext);
 332                   pprocdef (proc, vers, NULL, 1, 2);
 333                 }
 334             }
 335           pfreeprocdef (def->def_name, vers->vers_num, 2);
 336         }
 337       else
 338         {
 339           for (i = 1; i < 3; i++)
 340             {
 341               if (i == 1)
 342                 {
 343                   f_print (fout, "\n#if defined(__STDC__) || defined(__cplusplus)\n");
 344                   ext = "extern  ";
 345                 }
 346               else
 347                 {
 348                   f_print (fout, "\n#else /* K&R C */\n");
 349                   ext = "extern  ";
 350                 }
 351
 352               for (proc = vers->procs; proc != NULL; proc = proc->next)
 353                 {
 354                   if (!define_printed(proc, def->def.pr.versions))
 355                     {
 356                       pdefine(proc->proc_name, proc->proc_num);
 357                     }
 358                   f_print (fout, "%s", ext);
 359                   pprocdef (proc, vers, "CLIENT *", 0, i);
 360                   f_print (fout, "%s", ext);
 361                   pprocdef (proc, vers, "struct svc_req *", 1, i);
 362                 }
 363               pfreeprocdef (def->def_name, vers->vers_num, i);
 364             }
 365           f_print (fout, "#endif /* K&R C */\n");
 366         }
 367     }
 368 }
 369
 370 void
 371 pprocdef (proc_list * proc, version_list * vp,
 372           const char *addargtype, int server_p, int mode)
 373 {
 374   if (mtflag)
 375     {/* Print MT style stubs */
 376       if (server_p)
 377         f_print (fout, "bool_t ");
 378       else
 379         f_print (fout, "enum clnt_stat ");
 380     }
 381   else
 382     {
 383       ptype (proc->res_prefix, proc->res_type, 1);
 384       f_print (fout, "* ");
 385     }
 386   if (server_p)
 387     pvname_svc (proc->proc_name, vp->vers_num);
 388   else
 389     pvname (proc->proc_name, vp->vers_num);
 390
 391   /*
 392    * mode  1 = ANSI-C, mode 2 = K&R C
 393    */
 394   if (mode == 1)
 395     parglist (proc, addargtype);
 396   else
 397     f_print (fout, "();\n");
 398 }
 399
 400 /* print out argument list of procedure */
 401 static void
 402 parglist (proc_list *proc, const char *addargtype)
 403 {
 404   decl_list *dl;
 405
 406   f_print(fout,"(");
 407   if (proc->arg_num < 2 && newstyle &&
 408       streq (proc->args.decls->decl.type, "void"))
 409     {
 410       /* 0 argument in new style:  do nothing */
 411     }
 412   else
 413     {
 414       for (dl = proc->args.decls; dl != NULL; dl = dl->next)
 415         {
 416           ptype (dl->decl.prefix, dl->decl.type, 1);
 417           if (!newstyle)
 418             f_print (fout, "*");        /* old style passes by reference */
 419
 420           f_print (fout, ", ");
 421         }
 422     }
 423   if (mtflag)
 424     {
 425       ptype(proc->res_prefix, proc->res_type, 1);
 426       f_print(fout, "*, ");
 427     }
 428
 429   f_print (fout, "%s);\n", addargtype);
 430 }
 431
 432 static void
 433 penumdef (definition *def)
 434 {
 435   const char *name = def->def_name;
 436   enumval_list *l;
 437   const char *last = NULL;
 438   int count = 0;
 439
 440   f_print (fout, "enum %s {\n", name);
 441   for (l = def->def.en.vals; l != NULL; l = l->next)
 442     {
 443       f_print (fout, "\t%s", l->name);
 444       if (l->assignment)
 445         {
 446           f_print (fout, " = %s", l->assignment);
 447           last = l->assignment;
 448           count = 1;
 449         }
 450       else
 451         {
 452           if (last == NULL)
 453             {
 454               f_print (fout, " = %d", count++);
 455             }
 456           else
 457             {
 458               f_print (fout, " = %s + %d", last, count++);
 459             }
 460         }
 461       f_print (fout, ",\n");
 462     }
 463   f_print (fout, "};\n");
 464   f_print (fout, "typedef enum %s %s;\n", name, name);
 465 }
 466
 467 static void
 468 ptypedef (definition *def)
 469 {
 470   const char *name = def->def_name;
 471   const char *old = def->def.ty.old_type;
 472   char prefix[8];         /* enough to contain "struct ", including NUL */
 473   relation rel = def->def.ty.rel;
 474
 475   if (!streq (name, old))
 476     {
 477       if (streq (old, "string"))
 478         {
 479           old = "char";
 480           rel = REL_POINTER;
 481         }
 482       else if (streq (old, "opaque"))
 483         {
 484           old = "char";
 485         }
 486       else if (streq (old, "bool"))
 487         {
 488           old = "bool_t";
 489         }
 490       if (undefined2 (old, name) && def->def.ty.old_prefix)
 491         {
 492           s_print (prefix, "%s ", def->def.ty.old_prefix);
 493         }
 494       else
 495         {
 496           prefix[0] = 0;
 497         }
 498       f_print (fout, "typedef ");
 499       switch (rel)
 500         {
 501         case REL_ARRAY:
 502           f_print (fout, "struct {\n");
 503           f_print (fout, "\tu_int %s_len;\n", name);
 504           f_print (fout, "\t%s%s *%s_val;\n", prefix, old, name);
 505           f_print (fout, "} %s", name);
 506           break;
 507         case REL_POINTER:
 508           f_print (fout, "%s%s *%s", prefix, old, name);
 509           break;
 510         case REL_VECTOR:
 511           f_print (fout, "%s%s %s[%s]", prefix, old, name,
 512                    def->def.ty.array_max);
 513           break;
 514         case REL_ALIAS:
 515           f_print (fout, "%s%s %s", prefix, old, name);
 516           break;
 517         }
 518       f_print (fout, ";\n");
 519     }
 520 }
 521
 522 void
 523 pdeclaration (const char *name, declaration * dec, int tab,
 524               const char *separator)
 525 {
 526   char buf[8];                  /* enough to hold "struct ", include NUL */
 527   const char *prefix;
 528   const char *type;
 529
 530   if (streq (dec->type, "void"))
 531     {
 532       return;
 533     }
 534   tabify (fout, tab);
 535   if (streq (dec->type, name) && !dec->prefix)
 536     {
 537       f_print (fout, "struct ");
 538     }
 539   if (streq (dec->type, "string"))
 540     {
 541       f_print (fout, "char *%s", dec->name);
 542     }
 543   else
 544     {
 545       prefix = "";
 546       if (streq (dec->type, "bool"))
 547         {
 548           type = "bool_t";
 549         }
 550       else if (streq (dec->type, "opaque"))
 551         {
 552           type = "char";
 553         }
 554       else
 555         {
 556           if (dec->prefix)
 557             {
 558               s_print (buf, "%s ", dec->prefix);
 559               prefix = buf;
 560             }
 561           type = dec->type;
 562         }
 563       switch (dec->rel)
 564         {
 565         case REL_ALIAS:
 566           f_print (fout, "%s%s %s", prefix, type, dec->name);
 567           break;
 568         case REL_VECTOR:
 569           f_print (fout, "%s%s %s[%s]", prefix, type, dec->name,
 570                    dec->array_max);
 571           break;
 572         case REL_POINTER:
 573           f_print (fout, "%s%s *%s", prefix, type, dec->name);
 574           break;
 575         case REL_ARRAY:
 576           f_print (fout, "struct {\n");
 577           tabify (fout, tab);
 578           f_print (fout, "\tu_int %s_len;\n", dec->name);
 579           tabify (fout, tab);
 580           f_print (fout, "\t%s%s *%s_val;\n", prefix, type, dec->name);
 581           tabify (fout, tab);
 582           f_print (fout, "} %s", dec->name);
 583           break;
 584         }
 585     }
 586   f_print (fout, separator);
 587 }
 588
 589 static int
 590 undefined2 (const char *type, const char *stop)
 591 {
 592   list *l;
 593   definition *def;
 594
 595   for (l = defined; l != NULL; l = l->next)
 596     {
 597       def = (definition *) l->val;
 598       if (def->def_kind != DEF_PROGRAM)
 599         {
 600           if (streq (def->def_name, stop))
 601             {
 602               return 1;
 603             }
 604           else if (streq (def->def_name, type))
 605             {
 606               return 0;
 607             }
 608         }
 609     }
 610   return 1;
 611 }