usr.bin/rpcgen/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.
   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_hout.c 1.16    94/04/25 SMI"
  31
  32 #ifndef lint
  33 static char sccsid[] = "@(#)rpc_hout.c 1.12 89/02/22 (C) 1987 SMI";
  34 #endif
  35
  36 /*
  37  * rpc_hout.c, Header file outputter for the RPC protocol compiler
  38  * Copyright (C) 1987, Sun Microsystems, Inc.
  39  */
  40 #include <stdio.h>
  41 #include <ctype.h>
  42 #include "rpc_parse.h"
  43 #include "rpc_util.h"
  44
  45 void storexdrfuncdecl __P(( char *, int ));
  46 static void pconstdef __P(( definition * ));
  47 static void pstructdef __P(( definition * ));
  48 static void puniondef __P(( definition * ));
  49 static void pprogramdef __P(( definition * ));
  50 static void pstructdef __P(( definition * ));
  51 static void penumdef __P(( definition * ));
  52 static void ptypedef __P(( definition * ));
  53 static void pdefine __P(( char *, char * ));
  54 static int undefined2 __P(( char *, char * ));
  55 static void parglist __P(( proc_list *, char * ));
  56 static void pprocdef __P(( proc_list *, version_list *, char *, int, int ));
  57 void pdeclaration __P(( char *, declaration *, int, char * ));
  58
  59 static char RESULT[] = "clnt_res";
  60
  61
  62 /*
  63  * Print the C-version of an xdr definition
  64  */
  65 void
  66 print_datadef(def)
  67         definition *def;
  68 {
  69
  70         if (def->def_kind == DEF_PROGRAM)  /* handle data only */
  71                 return;
  72
  73         if (def->def_kind != DEF_CONST) {
  74                 f_print(fout, "\n");
  75         }
  76         switch (def->def_kind) {
  77         case DEF_STRUCT:
  78                 pstructdef(def);
  79                 break;
  80         case DEF_UNION:
  81                 puniondef(def);
  82                 break;
  83         case DEF_ENUM:
  84                 penumdef(def);
  85                 break;
  86         case DEF_TYPEDEF:
  87                 ptypedef(def);
  88                 break;
  89         case DEF_PROGRAM:
  90                 pprogramdef(def);
  91                 break;
  92         case DEF_CONST:
  93                 pconstdef(def);
  94                 break;
  95         }
  96         if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
  97             storexdrfuncdecl(def->def_name,
  98                              def->def_kind != DEF_TYPEDEF ||
  99                              !isvectordef(def->def.ty.old_type,
 100                                           def->def.ty.rel));
 101         }
 102 }
 103
 104
 105 void
 106 print_funcdef(def)
 107         definition *def;
 108 {
 109         switch (def->def_kind) {
 110         case DEF_PROGRAM:
 111                 f_print(fout, "\n");
 112                 pprogramdef(def);
 113                 break;
 114         default:
 115         }
 116 }
 117
 118 /* store away enough information to allow the XDR functions to be spat
 119     out at the end of the file */
 120
 121 void
 122 storexdrfuncdecl(name, pointerp)
 123 char *name;
 124 int pointerp;
 125 {
 126         xdrfunc * xdrptr;
 127
 128         xdrptr = (xdrfunc *) malloc(sizeof (struct xdrfunc));
 129
 130         xdrptr->name = name;
 131         xdrptr->pointerp = pointerp;
 132         xdrptr->next = NULL;
 133
 134         if (xdrfunc_tail == NULL){
 135                 xdrfunc_head = xdrptr;
 136                 xdrfunc_tail = xdrptr;
 137         } else {
 138                 xdrfunc_tail->next = xdrptr;
 139                 xdrfunc_tail = xdrptr;
 140         }
 141
 142
 143 }
 144
 145 void
 146 print_xdr_func_def(name, pointerp, i)
 147 char* name;
 148 int pointerp;
 149 int i;
 150 {
 151         if (i == 2) {
 152                 f_print(fout, "extern bool_t xdr_%s();\n", name);
 153                 return;
 154         }
 155         else
 156                 f_print(fout, "extern  bool_t xdr_%s(XDR *, %s%s);\n", name,
 157                         name, pointerp ? "*" : "");
 158
 159
 160 }
 161
 162
 163 static void
 164 pconstdef(def)
 165         definition *def;
 166 {
 167         pdefine(def->def_name, def->def.co);
 168 }
 169
 170 /* print out the definitions for the arguments of functions in the
 171     header file
 172 */
 173 static void
 174 pargdef(def)
 175         definition *def;
 176 {
 177         decl_list *l;
 178         version_list *vers;
 179         char *name;
 180         proc_list *plist;
 181
 182
 183         for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
 184                         for (plist = vers->procs; plist != NULL;
 185                             plist = plist->next) {
 186
 187                                 if (!newstyle || plist->arg_num < 2) {
 188                                         continue; /* old style or single args */
 189                                 }
 190                                 name = plist->args.argname;
 191                                 f_print(fout, "struct %s {\n", name);
 192                                 for (l = plist->args.decls;
 193                                     l != NULL; l = l->next) {
 194                                         pdeclaration(name, &l->decl, 1,
 195                                                      ";\n");
 196                                 }
 197                                 f_print(fout, "};\n");
 198                                 f_print(fout, "typedef struct %s %s;\n",
 199                                         name, name);
 200                                 storexdrfuncdecl(name, 1);
 201                                 f_print(fout, "\n");
 202                         }
 203                 }
 204 }
 205
 206
 207 static void
 208 pstructdef(def)
 209         definition *def;
 210 {
 211         decl_list *l;
 212         char *name = def->def_name;
 213
 214         f_print(fout, "struct %s {\n", name);
 215         for (l = def->def.st.decls; l != NULL; l = l->next) {
 216                 pdeclaration(name, &l->decl, 1, ";\n");
 217         }
 218         f_print(fout, "};\n");
 219         f_print(fout, "typedef struct %s %s;\n", name, name);
 220 }
 221
 222 static void
 223 puniondef(def)
 224         definition *def;
 225 {
 226         case_list *l;
 227         char *name = def->def_name;
 228         declaration *decl;
 229
 230         f_print(fout, "struct %s {\n", name);
 231         decl = &def->def.un.enum_decl;
 232         if (streq(decl->type, "bool")) {
 233                 f_print(fout, "\tbool_t %s;\n", decl->name);
 234         } else {
 235                 f_print(fout, "\t%s %s;\n", decl->type, decl->name);
 236         }
 237         f_print(fout, "\tunion {\n");
 238         for (l = def->def.un.cases; l != NULL; l = l->next) {
 239             if (l->contflag == 0)
 240                 pdeclaration(name, &l->case_decl, 2, ";\n");
 241         }
 242         decl = def->def.un.default_decl;
 243         if (decl && !streq(decl->type, "void")) {
 244                 pdeclaration(name, decl, 2, ";\n");
 245         }
 246         f_print(fout, "\t} %s_u;\n", name);
 247         f_print(fout, "};\n");
 248         f_print(fout, "typedef struct %s %s;\n", name, name);
 249 }
 250
 251 static void
 252 pdefine(name, num)
 253         char *name;
 254         char *num;
 255 {
 256         f_print(fout, "#define\t%s %s\n", name, num);
 257 }
 258
 259 static void
 260 puldefine(name, num)
 261         char *name;
 262         char *num;
 263 {
 264         f_print(fout, "#define\t%s ((unsigned long)(%s))\n", name, num);
 265 }
 266
 267 static int
 268 define_printed(stop, start)
 269         proc_list *stop;
 270         version_list *start;
 271 {
 272         version_list *vers;
 273         proc_list *proc;
 274
 275         for (vers = start; vers != NULL; vers = vers->next) {
 276                 for (proc = vers->procs; proc != NULL; proc = proc->next) {
 277                         if (proc == stop) {
 278                                 return (0);
 279                         } else if (streq(proc->proc_name, stop->proc_name)) {
 280                                 return (1);
 281                         }
 282                 }
 283         }
 284         abort();
 285         /* NOTREACHED */
 286 }
 287
 288 static void
 289 pfreeprocdef(char * name, char *vers, int mode)
 290 {
 291         f_print(fout, "extern int ");
 292         pvname(name, vers);
 293         if (mode == 1)
 294                 f_print(fout,"_freeresult(SVCXPRT *, xdrproc_t, caddr_t);\n");
 295         else
 296                 f_print(fout,"_freeresult();\n");
 297
 298
 299 }
 300
 301 static void
 302 pprogramdef(def)
 303         definition *def;
 304 {
 305         version_list *vers;
 306         proc_list *proc;
 307         int i;
 308         char *ext;
 309
 310         pargdef(def);
 311
 312         puldefine(def->def_name, def->def.pr.prog_num);
 313         for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
 314                 if (tblflag) {
 315                         f_print(fout,
 316                                 "extern struct rpcgen_table %s_%s_table[];\n",
 317                                 locase(def->def_name), vers->vers_num);
 318                         f_print(fout,
 319                                 "extern %s_%s_nproc;\n",
 320                                 locase(def->def_name), vers->vers_num);
 321                 }
 322                 puldefine(vers->vers_name, vers->vers_num);
 323
 324                 /*
 325                  * Print out 2 definitions, one for ANSI-C, another for
 326                  * old K & R C
 327                  */
 328
 329                 if(!Cflag){
 330                         ext = "extern  ";
 331                         for (proc = vers->procs; proc != NULL;
 332                              proc = proc->next) {
 333                                 if (!define_printed(proc,
 334                                                     def->def.pr.versions)) {
 335                                         puldefine(proc->proc_name,
 336                                                   proc->proc_num);
 337                                 }
 338                                 f_print(fout, "%s", ext);
 339                                 pprocdef(proc, vers, NULL, 0, 2);
 340
 341                                 if (mtflag) {
 342                                         f_print(fout, "%s", ext);
 343                                         pprocdef(proc, vers, NULL, 1, 2);
 344                                 }
 345                         }
 346                         pfreeprocdef(def->def_name, vers->vers_num, 2);
 347
 348                 } else {
 349                         for (i = 1; i < 3; i++){
 350                                 if (i == 1){
 351                                         f_print(fout, "\n#if defined(__STDC__) || defined(__cplusplus)\n");
 352                                         ext = "extern  ";
 353                                 }else{
 354                                         f_print(fout, "\n#else /* K&R C */\n");
 355                                         ext = "extern  ";
 356                                 }
 357
 358                                 for (proc = vers->procs; proc != NULL;
 359                                      proc = proc->next) {
 360                                         if (!define_printed(proc,
 361                                                             def->def.pr.versions)) {
 362                                                 puldefine(proc->proc_name,
 363                                                           proc->proc_num);
 364                                         }
 365                                         f_print(fout, "%s", ext);
 366                                         pprocdef(proc, vers, "CLIENT *", 0, i);
 367                                         f_print(fout, "%s", ext);
 368                                         pprocdef(proc, vers, "struct svc_req *", 1, i);
 369                                 }
 370                         pfreeprocdef(def->def_name, vers->vers_num, i);
 371                         }
 372                         f_print(fout, "#endif /* K&R C */\n");
 373                 }
 374         }
 375 }
 376
 377 static void
 378 pprocdef(proc, vp, addargtype, server_p, mode)
 379         proc_list *proc;
 380         version_list *vp;
 381         char* addargtype;
 382         int server_p;
 383         int mode;
 384 {
 385         if (mtflag) {/* Print MT style stubs */
 386                 if (server_p)
 387                         f_print(fout, "bool_t ");
 388                 else
 389                         f_print(fout, "enum clnt_stat ");
 390         } else {
 391                 ptype(proc->res_prefix, proc->res_type, 1);
 392                 f_print(fout, "* ");
 393         }
 394         if (server_p)
 395                 pvname_svc(proc->proc_name, vp->vers_num);
 396         else
 397                 pvname(proc->proc_name, vp->vers_num);
 398
 399         /*
 400          *  mode  1 = ANSI-C, mode 2 = K&R C
 401          */
 402         if ( mode == 1)
 403                 parglist(proc, addargtype);
 404         else
 405                 f_print(fout, "();\n");
 406 }
 407
 408
 409
 410 /* print out argument list of procedure */
 411 static void
 412 parglist(proc, addargtype)
 413         proc_list *proc;
 414     char* addargtype;
 415 {
 416         decl_list *dl;
 417
 418         f_print(fout, "(");
 419         if (proc->arg_num < 2 && newstyle &&
 420             streq(proc->args.decls->decl.type, "void")) {
 421                 /* 0 argument in new style:  do nothing*/
 422         }
 423         else {
 424                 for (dl = proc->args.decls; dl != NULL; dl = dl->next) {
 425                         ptype(dl->decl.prefix, dl->decl.type, 1);
 426                         if (!newstyle)
 427                                 f_print(fout, "*");
 428                         /* old style passes by reference */
 429                         f_print(fout, ", ");
 430                 }
 431         }
 432
 433         if (mtflag)  {
 434                 ptype(proc->res_prefix, proc->res_type, 1);
 435                 f_print(fout, "*, ");
 436         }
 437
 438         f_print(fout, "%s);\n", addargtype);
 439
 440 }
 441
 442 static void
 443 penumdef(def)
 444         definition *def;
 445 {
 446         char *name = def->def_name;
 447         enumval_list *l;
 448         char *last = NULL;
 449         int count = 0;
 450
 451         f_print(fout, "enum %s {\n", name);
 452         for (l = def->def.en.vals; l != NULL; l = l->next) {
 453                 f_print(fout, "\t%s", l->name);
 454                 if (l->assignment) {
 455                         f_print(fout, " = %s", l->assignment);
 456                         last = l->assignment;
 457                         count = 1;
 458                 } else {
 459                         if (last == NULL) {
 460                                 f_print(fout, " = %d", count++);
 461                         } else {
 462                                 f_print(fout, " = %s + %d", last, count++);
 463                         }
 464                 }
 465                 if (l->next)
 466                         f_print(fout, ",\n");
 467                 else
 468                         f_print(fout, "\n");
 469         }
 470         f_print(fout, "};\n");
 471         f_print(fout, "typedef enum %s %s;\n", name, name);
 472 }
 473
 474 static void
 475 ptypedef(def)
 476         definition *def;
 477 {
 478         char *name = def->def_name;
 479         char *old = def->def.ty.old_type;
 480         char prefix[8]; /* enough to contain "struct ", including NUL */
 481         relation rel = def->def.ty.rel;
 482
 483
 484         if (!streq(name, old)) {
 485                 if (streq(old, "string")) {
 486                         old = "char";
 487                         rel = REL_POINTER;
 488                 } else if (streq(old, "opaque")) {
 489                         old = "char";
 490                 } else if (streq(old, "bool")) {
 491                         old = "bool_t";
 492                 }
 493                 if (undefined2(old, name) && def->def.ty.old_prefix) {
 494                         s_print(prefix, "%s ", def->def.ty.old_prefix);
 495                 } else {
 496                         prefix[0] = 0;
 497                 }
 498                 f_print(fout, "typedef ");
 499                 switch (rel) {
 500                 case REL_ARRAY:
 501                         f_print(fout, "struct {\n");
 502                         f_print(fout, "\tu_int %s_len;\n", name);
 503                         f_print(fout, "\t%s%s *%s_val;\n", prefix, old, name);
 504                         f_print(fout, "} %s", name);
 505                         break;
 506                 case REL_POINTER:
 507                         f_print(fout, "%s%s *%s", prefix, old, name);
 508                         break;
 509                 case REL_VECTOR:
 510                         f_print(fout, "%s%s %s[%s]", prefix, old, name,
 511                                 def->def.ty.array_max);
 512                         break;
 513                 case REL_ALIAS:
 514                         f_print(fout, "%s%s %s", prefix, old, name);
 515                         break;
 516                 }
 517                 f_print(fout, ";\n");
 518         }
 519 }
 520
 521 void
 522 pdeclaration(name, dec, tab, separator)
 523         char *name;
 524         declaration *dec;
 525         int tab;
 526         char *separator;
 527 {
 528         char buf[8];    /* enough to hold "struct ", include NUL */
 529         char *prefix;
 530         char *type;
 531
 532         if (streq(dec->type, "void")) {
 533                 return;
 534         }
 535         tabify(fout, tab);
 536         if (streq(dec->type, name) && !dec->prefix) {
 537                 f_print(fout, "struct ");
 538         }
 539         if (streq(dec->type, "string")) {
 540                 f_print(fout, "char *%s", dec->name);
 541         } else {
 542                 prefix = "";
 543                 if (streq(dec->type, "bool")) {
 544                         type = "bool_t";
 545                 } else if (streq(dec->type, "opaque")) {
 546                         type = "char";
 547                 } else {
 548                         if (dec->prefix) {
 549                                 s_print(buf, "%s ", dec->prefix);
 550                                 prefix = buf;
 551                         }
 552                         type = dec->type;
 553                 }
 554                 switch (dec->rel) {
 555                 case REL_ALIAS:
 556                         f_print(fout, "%s%s %s", prefix, type, dec->name);
 557                         break;
 558                 case REL_VECTOR:
 559                         f_print(fout, "%s%s %s[%s]", prefix, type, dec->name,
 560                                 dec->array_max);
 561                         break;
 562                 case REL_POINTER:
 563                         f_print(fout, "%s%s *%s", prefix, type, dec->name);
 564                         break;
 565                 case REL_ARRAY:
 566                         f_print(fout, "struct {\n");
 567                         tabify(fout, tab);
 568                         f_print(fout, "\tu_int %s_len;\n", dec->name);
 569                         tabify(fout, tab);
 570                         f_print(fout,
 571                                 "\t%s%s *%s_val;\n", prefix, type, dec->name);
 572                         tabify(fout, tab);
 573                         f_print(fout, "} %s", dec->name);
 574                         break;
 575                 }
 576         }
 577         f_print(fout, separator);
 578 }
 579
 580 static int
 581 undefined2(type, stop)
 582         char *type;
 583         char *stop;
 584 {
 585         list *l;
 586         definition *def;
 587
 588         for (l = defined; l != NULL; l = l->next) {
 589                 def = (definition *) l->val;
 590                 if (def->def_kind != DEF_PROGRAM) {
 591                         if (streq(def->def_name, stop)) {
 592                                 return (1);
 593                         } else if (streq(def->def_name, type)) {
 594                                 return (0);
 595                         }
 596                 }
 597         }
 598         return (1);
 599 }