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