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  * @(#)rpc_hout.c       1.16    94/04/25 SMI; 1.12 89/02/22 (C) 1987 SMI
  30  * $FreeBSD: src/usr.bin/rpcgen/rpc_hout.c,v 1.15 2005/11/13 21:17:24 dwmalone Exp $
  31  */
  32
  33 /*
  34  * rpc_hout.c, Header file outputter for the RPC protocol compiler
  35  * Copyright (C) 1987, Sun Microsystems, Inc.
  36  */
  37 #include <stdio.h>
  38 #include <ctype.h>
  39 #include "rpc_parse.h"
  40 #include "rpc_scan.h"
  41 #include "rpc_util.h"
  42
  43 void            storexdrfuncdecl(const char *, int);
  44 static void     pconstdef(definition *);
  45 static void     pstructdef(definition *);
  46 static void     puniondef(definition *);
  47 static void     pprogramdef(definition *, int);
  48 static void     penumdef(definition *);
  49 static void     ptypedef(definition *);
  50 static void     pdefine(const char *, const char *);
  51 static int      undefined2(const char *, const char *);
  52 static void     parglist(proc_list *, const char *);
  53 static void     pprocdef(proc_list *, version_list *, const char *, int);
  54
  55 /*
  56  * Print the C-version of an xdr definition
  57  */
  58 void
  59 print_datadef(definition *def, int headeronly)
  60 {
  61
  62         if (def->def_kind == DEF_PROGRAM)  /* handle data only */
  63                 return;
  64
  65         if (def->def_kind != DEF_CONST)
  66                 f_print(fout, "\n");
  67
  68         switch (def->def_kind) {
  69         case DEF_STRUCT:
  70                 pstructdef(def);
  71                 break;
  72         case DEF_UNION:
  73                 puniondef(def);
  74                 break;
  75         case DEF_ENUM:
  76                 penumdef(def);
  77                 break;
  78         case DEF_TYPEDEF:
  79                 ptypedef(def);
  80                 break;
  81         case DEF_PROGRAM:
  82                 pprogramdef(def, headeronly);
  83                 break;
  84         case DEF_CONST:
  85                 pconstdef(def);
  86                 break;
  87         }
  88         if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
  89                 if (def->def_kind != DEF_TYPEDEF ||
  90                     !isvectordef(def->def.ty.old_type, def->def.ty.rel))
  91                         storexdrfuncdecl(def->def_name, 1);
  92                 else
  93                         storexdrfuncdecl(def->def_name, 0);
  94         }
  95 }
  96
  97
  98 void
  99 print_funcdef(definition *def, int headeronly)
 100 {
 101         switch (def->def_kind) {
 102         case DEF_PROGRAM:
 103                 f_print(fout, "\n");
 104                 pprogramdef(def, headeronly);
 105                 break;
 106         default:
 107                 break;
 108         }
 109 }
 110
 111 /* store away enough information to allow the XDR functions to be spat
 112     out at the end of the file */
 113
 114 void
 115 storexdrfuncdecl(const char *name, int pointerp)
 116 {
 117         xdrfunc * xdrptr;
 118
 119         xdrptr = XALLOC(struct xdrfunc);
 120
 121         xdrptr->name = name;
 122         xdrptr->pointerp = pointerp;
 123         xdrptr->next = NULL;
 124
 125         if (xdrfunc_tail == NULL)
 126                 xdrfunc_head = xdrptr;
 127         else
 128                 xdrfunc_tail->next = xdrptr;
 129         xdrfunc_tail = xdrptr;
 130
 131 }
 132
 133 void
 134 print_xdr_func_def(const char *name, int pointerp)
 135 {
 136         f_print(fout, "extern  bool_t xdr_%s(XDR *, %s%s);\n", name,
 137                 name, pointerp ? "*" : "");
 138 }
 139
 140
 141 static void
 142 pconstdef(definition *def)
 143 {
 144         pdefine(def->def_name, def->def.co);
 145 }
 146
 147 /* print out the definitions for the arguments of functions in the
 148     header file
 149 */
 150 static void
 151 pargdef(definition *def)
 152 {
 153         decl_list *l;
 154         version_list *vers;
 155         char *name;
 156         proc_list *plist;
 157
 158         for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
 159                 for (plist = vers->procs; plist != NULL; plist = plist->next) {
 160                         if (!newstyle || plist->arg_num < 2)
 161                                 continue; /* old style or single args */
 162
 163                         name = plist->args.argname;
 164                         f_print(fout, "struct %s {\n", name);
 165                         for (l = plist->args.decls; l != NULL; l = l->next)
 166                                 pdeclaration(name, &l->decl, 1, ";\n");
 167                         f_print(fout, "};\n");
 168                         f_print(fout, "typedef struct %s %s;\n", name, name);
 169                         storexdrfuncdecl(name, 1);
 170                         f_print(fout, "\n");
 171                 }
 172         }
 173 }
 174
 175
 176 static void
 177 pstructdef(definition *def)
 178 {
 179         decl_list *l;
 180         const char *name = def->def_name;
 181
 182         f_print(fout, "struct %s {\n", name);
 183         for (l = def->def.st.decls; l != NULL; l = l->next)
 184                 pdeclaration(name, &l->decl, 1, ";\n");
 185
 186         f_print(fout, "};\n");
 187         f_print(fout, "typedef struct %s %s;\n", name, name);
 188 }
 189
 190 static void
 191 puniondef(definition *def)
 192 {
 193         case_list *l;
 194         const char *name = def->def_name;
 195         declaration *decl;
 196
 197         f_print(fout, "struct %s {\n", name);
 198         decl = &def->def.un.enum_decl;
 199         if (streq(decl->type, "bool"))
 200                 f_print(fout, "\tbool_t %s;\n", decl->name);
 201         else
 202                 f_print(fout, "\t%s %s;\n", decl->type, decl->name);
 203
 204         f_print(fout, "\tunion {\n");
 205         for (l = def->def.un.cases; l != NULL; l = l->next) {
 206                 if (l->contflag == 0)
 207                         pdeclaration(name, &l->case_decl, 2, ";\n");
 208         }
 209         decl = def->def.un.default_decl;
 210         if (decl && !streq(decl->type, "void")) {
 211                 pdeclaration(name, decl, 2, ";\n");
 212         }
 213         f_print(fout, "\t} %s_u;\n", name);
 214         f_print(fout, "};\n");
 215         f_print(fout, "typedef struct %s %s;\n", name, name);
 216 }
 217
 218 static void
 219 pdefine(const char *name, const char *num)
 220 {
 221         f_print(fout, "#define\t%s %s\n", name, num);
 222 }
 223
 224 static void
 225 puldefine(const char *name, const char *num)
 226 {
 227         f_print(fout, "#define\t%s ((unsigned long)(%s))\n", name, num);
 228 }
 229
 230 static int
 231 define_printed(proc_list *stop, version_list *start)
 232 {
 233         version_list *vers;
 234         proc_list *proc;
 235
 236         for (vers = start; vers != NULL; vers = vers->next) {
 237                 for (proc = vers->procs; proc != NULL; proc = proc->next) {
 238                         if (proc == stop)
 239                                 return(0);
 240                         else if (streq(proc->proc_name, stop->proc_name))
 241                                 return(1);
 242                 }
 243         }
 244         abort();
 245         /* NOTREACHED */
 246 }
 247
 248 static void
 249 pfreeprocdef(const char * name, const char *vers)
 250 {
 251         f_print(fout, "extern int ");
 252         pvname(name, vers);
 253         f_print(fout, "_freeresult(SVCXPRT *, xdrproc_t, caddr_t);\n");
 254 }
 255
 256 static void
 257 pdispatch(const char * name, const char *vers)
 258 {
 259
 260         f_print(fout, "void ");
 261         pvname(name, vers);
 262         f_print(fout, "(struct svc_req *rqstp, SVCXPRT *transp);\n");
 263 }
 264
 265 static void
 266 pprogramdef(definition *def, int headeronly)
 267 {
 268         version_list *vers;
 269         proc_list *proc;
 270         const char *ext;
 271
 272         pargdef(def);
 273
 274         puldefine(def->def_name, def->def.pr.prog_num);
 275         for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
 276                 if (tblflag) {
 277                         f_print(fout,
 278                                 "extern struct rpcgen_table %s_%s_table[];\n",
 279                                 locase(def->def_name), vers->vers_num);
 280                         f_print(fout, "extern %s_%s_nproc;\n",
 281                                 locase(def->def_name), vers->vers_num);
 282                 }
 283                 puldefine(vers->vers_name, vers->vers_num);
 284
 285                 f_print(fout, "\n");
 286                 ext = "extern  ";
 287                 if (headeronly) {
 288                         f_print(fout, "%s", ext);
 289                         pdispatch(def->def_name, vers->vers_num);
 290                 }
 291                 for (proc = vers->procs; proc != NULL; proc = proc->next) {
 292                         if (!define_printed(proc, def->def.pr.versions)) {
 293                                 puldefine(proc->proc_name, proc->proc_num);
 294                         }
 295                         f_print(fout, "%s", ext);
 296                         pprocdef(proc, vers, "CLIENT *", 0);
 297                         f_print(fout, "%s", ext);
 298                         pprocdef(proc, vers, "struct svc_req *", 1);
 299                 }
 300                 pfreeprocdef(def->def_name, vers->vers_num);
 301         }
 302 }
 303
 304 static void
 305 pprocdef(proc_list *proc, version_list *vp, const char *addargtype, int server_p)
 306 {
 307         if (mtflag) {
 308                 /* Print MT style stubs */
 309                 if (server_p)
 310                         f_print(fout, "bool_t ");
 311                 else
 312                         f_print(fout, "enum clnt_stat ");
 313         } else {
 314                 ptype(proc->res_prefix, proc->res_type, 1);
 315                 f_print(fout, "* ");
 316         }
 317         if (server_p)
 318                 pvname_svc(proc->proc_name, vp->vers_num);
 319         else
 320                 pvname(proc->proc_name, vp->vers_num);
 321
 322         parglist(proc, addargtype);
 323 }
 324
 325
 326
 327 /* print out argument list of procedure */
 328 static void
 329 parglist(proc_list *proc, const char *addargtype)
 330 {
 331         decl_list *dl;
 332
 333         f_print(fout, "(");
 334         if (proc->arg_num < 2 && newstyle &&
 335             streq(proc->args.decls->decl.type, "void")) {
 336                 /* 0 argument in new style:  do nothing*/
 337         }
 338         else {
 339                 for (dl = proc->args.decls; dl != NULL; dl = dl->next) {
 340                         ptype(dl->decl.prefix, dl->decl.type, 1);
 341                         if (!newstyle)
 342                                 f_print(fout, "*");
 343                         /* old style passes by reference */
 344                         f_print(fout, ", ");
 345                 }
 346         }
 347
 348         if (mtflag)  {
 349                 ptype(proc->res_prefix, proc->res_type, 1);
 350                 f_print(fout, "*, ");
 351         }
 352
 353         f_print(fout, "%s);\n", addargtype);
 354 }
 355
 356 static void
 357 penumdef(definition *def)
 358 {
 359         const char *name = def->def_name;
 360         enumval_list *l;
 361         const char *last = NULL;
 362         int count = 0;
 363
 364         f_print(fout, "enum %s {\n", name);
 365         for (l = def->def.en.vals; l != NULL; l = l->next) {
 366                 f_print(fout, "\t%s", l->name);
 367                 if (l->assignment) {
 368                         f_print(fout, " = %s", l->assignment);
 369                         last = l->assignment;
 370                         count = 1;
 371                 } else {
 372                         if (last == NULL)
 373                                 f_print(fout, " = %d", count++);
 374                         else
 375                                 f_print(fout, " = %s + %d", last, count++);
 376                 }
 377                 if (l->next)
 378                         f_print(fout, ",\n");
 379                 else
 380                         f_print(fout, "\n");
 381         }
 382         f_print(fout, "};\n");
 383         f_print(fout, "typedef enum %s %s;\n", name, name);
 384 }
 385
 386 static void
 387 ptypedef(definition *def)
 388 {
 389         const char *name = def->def_name;
 390         const char *old = def->def.ty.old_type;
 391         char prefix[8]; /* enough to contain "struct ", including NUL */
 392         relation rel = def->def.ty.rel;
 393
 394         if (!streq(name, old)) {
 395                 if (streq(old, "string")) {
 396                         old = "char";
 397                         rel = REL_POINTER;
 398                 } else if (streq(old, "opaque")) {
 399                         old = "char";
 400                 } else if (streq(old, "bool")) {
 401                         old = "bool_t";
 402                 }
 403                 if (undefined2(old, name) && def->def.ty.old_prefix)
 404                         s_print(prefix, "%s ", def->def.ty.old_prefix);
 405                 else
 406                         prefix[0] = 0;
 407                 f_print(fout, "typedef ");
 408                 switch (rel) {
 409                 case REL_ARRAY:
 410                         f_print(fout, "struct {\n");
 411                         f_print(fout, "\tu_int %s_len;\n", name);
 412                         f_print(fout, "\t%s%s *%s_val;\n", prefix, old, name);
 413                         f_print(fout, "} %s", name);
 414                         break;
 415                 case REL_POINTER:
 416                         f_print(fout, "%s%s *%s", prefix, old, name);
 417                         break;
 418                 case REL_VECTOR:
 419                         f_print(fout, "%s%s %s[%s]", prefix, old, name,
 420                                 def->def.ty.array_max);
 421                         break;
 422                 case REL_ALIAS:
 423                         f_print(fout, "%s%s %s", prefix, old, name);
 424                         break;
 425                 }
 426                 f_print(fout, ";\n");
 427         }
 428 }
 429
 430 void
 431 pdeclaration(const char *name, declaration *dec, int tab, const char *separator)
 432 {
 433         char buf[8];    /* enough to hold "struct ", include NUL */
 434         const char *prefix;
 435         const char *type;
 436
 437         if (streq(dec->type, "void"))
 438                 return;
 439
 440         tabify(fout, tab);
 441         if (streq(dec->type, name) && !dec->prefix)
 442                 f_print(fout, "struct ");
 443
 444         if (streq(dec->type, "string")) {
 445                 f_print(fout, "char *%s", dec->name);
 446         } else {
 447                 prefix = "";
 448                 if (streq(dec->type, "bool")) {
 449                         type = "bool_t";
 450                 } else if (streq(dec->type, "opaque")) {
 451                         type = "char";
 452                 } else {
 453                         if (dec->prefix) {
 454                                 s_print(buf, "%s ", dec->prefix);
 455                                 prefix = buf;
 456                         }
 457                         type = dec->type;
 458                 }
 459                 switch (dec->rel) {
 460                 case REL_ALIAS:
 461                         f_print(fout, "%s%s %s", prefix, type, dec->name);
 462                         break;
 463                 case REL_VECTOR:
 464                         f_print(fout, "%s%s %s[%s]", prefix, type, dec->name,
 465                                 dec->array_max);
 466                         break;
 467                 case REL_POINTER:
 468                         f_print(fout, "%s%s *%s", prefix, type, dec->name);
 469                         break;
 470                 case REL_ARRAY:
 471                         f_print(fout, "struct {\n");
 472                         tabify(fout, tab);
 473                         f_print(fout, "\tu_int %s_len;\n", dec->name);
 474                         tabify(fout, tab);
 475                         f_print(fout,
 476                                 "\t%s%s *%s_val;\n", prefix, type, dec->name);
 477                         tabify(fout, tab);
 478                         f_print(fout, "} %s", dec->name);
 479                         break;
 480                 }
 481         }
 482         f_print(fout, "%s", separator);
 483 }
 484
 485 static int
 486 undefined2(const char *type, const char *stop)
 487 {
 488         list *l;
 489         definition *def;
 490
 491         for (l = defined; l != NULL; l = l->next) {
 492                 def = (definition *) l->val;
 493                 if (def->def_kind != DEF_PROGRAM) {
 494                         if (streq(def->def_name, stop))
 495                                 return(1);
 496                         else if (streq(def->def_name, type))
 497                                 return(0);
 498                 }
 499         }
 500         return(1);
 501 }