1 /* $OpenBSD: rpc_hout.c,v 1.18 2009/10/27 23:59:42 deraadt Exp $ */ 2 /* $NetBSD: rpc_hout.c,v 1.4 1995/06/11 21:49:55 pk Exp $ */ 3 /* 4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5 * unrestricted use provided that this legend is included on all tape 6 * media and as a part of the software program in whole or part. Users 7 * may copy or modify Sun RPC without charge, but are not authorized 8 * to license or distribute it to anyone else except as part of a product or 9 * program developed by the user or with the express written consent of 10 * Sun Microsystems, Inc. 11 * 12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 15 * 16 * Sun RPC is provided with no support and without any obligation on the 17 * part of Sun Microsystems, Inc. to assist in its use, correction, 18 * modification or enhancement. 19 * 20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 22 * OR ANY PART THEREOF. 23 * 24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 25 * or profits or other special, indirect and consequential damages, even if 26 * Sun has been advised of the possibility of such damages. 27 * 28 * Sun Microsystems, Inc. 29 * 2550 Garcia Avenue 30 * Mountain View, California 94043 31 */ 32 33 /* 34 * rpc_hout.c, Header file outputter for the RPC protocol compiler 35 */ 36 #include <sys/cdefs.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <ctype.h> 40 #include "rpc_parse.h" 41 #include "rpc_util.h" 42 43 static void pconstdef(definition *); 44 static void pargdef(definition *); 45 static void pstructdef(definition *); 46 static void puniondef(definition *); 47 static void pprogramdef(definition *); 48 static void penumdef(definition *); 49 static void ptypedef(definition *); 50 static void pdefine(char *, char *); 51 static void puldefine(char *, char *); 52 static int define_printed(proc_list *, version_list *); 53 static int undefined2(char *, char *); 54 static void parglist(proc_list *, char *); 55 void pxdrfuncdecl(char *, int); 56 void pprocdef(proc_list *, version_list *, char *, int, int); 57 void pdeclaration(char *, declaration *, int, char *); 58 59 /* 60 * Print the C-version of an xdr definition 61 */ 62 void 63 print_datadef(def) 64 definition *def; 65 { 66 67 if (def->def_kind == DEF_PROGRAM) /* handle data only */ 68 return; 69 70 if (def->def_kind != DEF_CONST) 71 fprintf(fout, "\n"); 72 switch (def->def_kind) { 73 case DEF_STRUCT: 74 pstructdef(def); 75 break; 76 case DEF_UNION: 77 puniondef(def); 78 break; 79 case DEF_ENUM: 80 penumdef(def); 81 break; 82 case DEF_TYPEDEF: 83 ptypedef(def); 84 break; 85 case DEF_PROGRAM: 86 pprogramdef(def); 87 break; 88 case DEF_CONST: 89 pconstdef(def); 90 break; 91 } 92 if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) { 93 pxdrfuncdecl(def->def_name, 94 def->def_kind != DEF_TYPEDEF || 95 !isvectordef(def->def.ty.old_type, def->def.ty.rel)); 96 } 97 } 98 99 100 void 101 print_funcdef(def) 102 definition *def; 103 { 104 switch (def->def_kind) { 105 case DEF_PROGRAM: 106 fprintf(fout, "\n"); 107 pprogramdef(def); 108 break; 109 } 110 } 111 112 void 113 pxdrfuncdecl(name, pointerp) 114 char *name; 115 int pointerp; 116 { 117 118 fprintf(fout,"#ifdef __cplusplus\n"); 119 fprintf(fout, "extern \"C\" bool_t xdr_%s(XDR *, %s %s);\n", 120 name, name, pointerp ? ("*") : ""); 121 fprintf(fout,"#elif defined(__STDC__)\n"); 122 fprintf(fout, "extern bool_t xdr_%s(XDR *, %s %s);\n", 123 name, name, pointerp ? ("*") : ""); 124 fprintf(fout,"#else /* Old Style C */\n"); 125 fprintf(fout, "bool_t xdr_%s();\n", name); 126 fprintf(fout,"#endif /* Old Style C */\n\n"); 127 } 128 129 130 static void 131 pconstdef(def) 132 definition *def; 133 { 134 pdefine(def->def_name, def->def.co); 135 } 136 137 /* 138 * print out the definitions for the arguments of functions in the 139 * header file 140 */ 141 static void 142 pargdef(def) 143 definition *def; 144 { 145 decl_list *l; 146 version_list *vers; 147 char *name; 148 proc_list *plist; 149 150 for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) { 151 for (plist = vers->procs; plist != NULL; 152 plist = plist->next) { 153 if (!newstyle || plist->arg_num < 2) { 154 continue; /* old style or single args */ 155 } 156 name = plist->args.argname; 157 fprintf(fout, "struct %s {\n", name); 158 for (l = plist->args.decls; 159 l != NULL; l = l->next) { 160 pdeclaration(name, &l->decl, 1, ";\n"); 161 } 162 fprintf(fout, "};\n"); 163 fprintf(fout, "typedef struct %s %s;\n", name, name); 164 pxdrfuncdecl(name, NULL); 165 fprintf(fout, "\n"); 166 } 167 } 168 } 169 170 static void 171 pstructdef(def) 172 definition *def; 173 { 174 char *name = def->def_name; 175 decl_list *l; 176 177 fprintf(fout, "struct %s {\n", name); 178 for (l = def->def.st.decls; l != NULL; l = l->next) 179 pdeclaration(name, &l->decl, 1, ";\n"); 180 fprintf(fout, "};\n"); 181 fprintf(fout, "typedef struct %s %s;\n", name, name); 182 } 183 184 static void 185 puniondef(def) 186 definition *def; 187 { 188 case_list *l; 189 char *name = def->def_name; 190 declaration *decl; 191 192 fprintf(fout, "struct %s {\n", name); 193 decl = &def->def.un.enum_decl; 194 if (streq(decl->type, "bool")) { 195 fprintf(fout, "\tbool_t %s;\n", decl->name); 196 } else { 197 fprintf(fout, "\t%s %s;\n", decl->type, decl->name); 198 } 199 fprintf(fout, "\tunion {\n"); 200 for (l = def->def.un.cases; l != NULL; l = l->next) { 201 if (l->contflag == 0) 202 pdeclaration(name, &l->case_decl, 2, ";\n"); 203 } 204 decl = def->def.un.default_decl; 205 if (decl && !streq(decl->type, "void")) { 206 pdeclaration(name, decl, 2, ";\n"); 207 } 208 fprintf(fout, "\t} %s_u;\n", name); 209 fprintf(fout, "};\n"); 210 fprintf(fout, "typedef struct %s %s;\n", name, name); 211 } 212 213 static void 214 pdefine(name, num) 215 char *name; 216 char *num; 217 { 218 fprintf(fout, "#define %s %s\n", name, num); 219 } 220 221 static void 222 puldefine(name, num) 223 char *name; 224 char *num; 225 { 226 fprintf(fout, "#define %s ((u_long)%s)\n", name, num); 227 } 228 229 static int 230 define_printed(stop, start) 231 proc_list *stop; 232 version_list *start; 233 { 234 version_list *vers; 235 proc_list *proc; 236 237 for (vers = start; vers != NULL; vers = vers->next) { 238 for (proc = vers->procs; proc != NULL; proc = proc->next) { 239 if (proc == stop) { 240 return (0); 241 } else if (streq(proc->proc_name, stop->proc_name)) { 242 return (1); 243 } 244 } 245 } 246 abort(); 247 /* NOTREACHED */ 248 } 249 250 static void 251 pprogramdef(def) 252 definition *def; 253 { 254 version_list *vers; 255 proc_list *proc; 256 int i; 257 char *ext; 258 259 pargdef(def); 260 261 puldefine(def->def_name, def->def.pr.prog_num); 262 for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) { 263 if (tblflag) { 264 fprintf(fout, "extern struct rpcgen_table %s_%s_table[];\n", 265 locase(def->def_name), vers->vers_num); 266 fprintf(fout, "extern %s_%s_nproc;\n", 267 locase(def->def_name), vers->vers_num); 268 } 269 puldefine(vers->vers_name, vers->vers_num); 270 271 /* 272 * Print out 3 definitions, one for ANSI-C, another for C++, 273 * a third for old style C 274 */ 275 for (i=0; i<3; i++) { 276 if (i==0) { 277 fprintf(fout,"\n#ifdef __cplusplus\n"); 278 ext = "extern \"C\" "; 279 } else if (i==1) { 280 fprintf(fout,"\n#elif defined(__STDC__)\n"); 281 ext = "extern "; 282 } else { 283 fprintf(fout,"\n#else /* Old Style C */\n"); 284 ext = "extern "; 285 } 286 287 for (proc = vers->procs; proc != NULL; proc = proc->next) { 288 if (!define_printed(proc, def->def.pr.versions)) 289 puldefine(proc->proc_name, proc->proc_num); 290 fprintf(fout,"%s",ext); 291 pprocdef(proc, vers, "CLIENT *", 0,i); 292 fprintf(fout,"%s",ext); 293 pprocdef(proc, vers, "struct svc_req *", 1,i); 294 } 295 } 296 fprintf(fout,"#endif /* Old Style C */\n"); 297 } 298 } 299 300 void 301 pprocdef(proc, vp, addargtype, server_p,mode) 302 proc_list *proc; 303 version_list *vp; 304 char *addargtype; 305 int server_p; 306 int mode; 307 { 308 309 ptype(proc->res_prefix, proc->res_type, 1); 310 fprintf(fout, "* "); 311 if (server_p) 312 pvname_svc(proc->proc_name, vp->vers_num); 313 else 314 pvname(proc->proc_name, vp->vers_num); 315 316 /* 317 * mode 0 == cplusplus, mode 1 = ANSI-C, mode 2 = old style C 318 */ 319 if (mode == 0 || mode == 1) 320 parglist(proc, addargtype); 321 else 322 fprintf(fout, "();\n"); 323 } 324 325 /* print out argument list of procedure */ 326 static void 327 parglist(proc, addargtype) 328 proc_list *proc; 329 char *addargtype; 330 { 331 decl_list *dl; 332 333 fprintf(fout,"("); 334 335 if (proc->arg_num < 2 && newstyle && 336 streq(proc->args.decls->decl.type, "void")) { 337 /* 0 argument in new style: do nothing */ 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 fprintf(fout, "*"); /* old style passes by reference */ 343 fprintf(fout, ", "); 344 } 345 } 346 fprintf(fout, "%s);\n", addargtype); 347 } 348 349 static void 350 penumdef(def) 351 definition *def; 352 { 353 char *name = def->def_name; 354 enumval_list *l; 355 char *last = NULL; 356 int count = 0; 357 358 fprintf(fout, "enum %s {\n", name); 359 for (l = def->def.en.vals; l != NULL; l = l->next) { 360 fprintf(fout, "\t%s", l->name); 361 if (l->assignment) { 362 fprintf(fout, " = %s", l->assignment); 363 last = l->assignment; 364 count = 1; 365 } else { 366 if (last == NULL) { 367 fprintf(fout, " = %d", count++); 368 } else { 369 fprintf(fout, " = %s + %d", last, count++); 370 } 371 } 372 if (l->next) 373 fprintf(fout, ",\n"); 374 else 375 fprintf(fout, "\n"); 376 } 377 fprintf(fout, "};\n"); 378 fprintf(fout, "typedef enum %s %s;\n", name, name); 379 } 380 381 static void 382 ptypedef(def) 383 definition *def; 384 { 385 char *name = def->def_name; 386 char *old = def->def.ty.old_type; 387 char prefix[8]; /* enough to contain "struct ", including NUL */ 388 relation rel = def->def.ty.rel; 389 390 if (!streq(name, old)) { 391 if (streq(old, "string")) { 392 old = "char"; 393 rel = REL_POINTER; 394 } else if (streq(old, "opaque")) { 395 old = "char"; 396 } else if (streq(old, "bool")) { 397 old = "bool_t"; 398 } 399 if (undefined2(old, name) && def->def.ty.old_prefix) { 400 snprintf(prefix, sizeof prefix, "%s ", def->def.ty.old_prefix); 401 } else { 402 prefix[0] = 0; 403 } 404 fprintf(fout, "typedef "); 405 switch (rel) { 406 case REL_ARRAY: 407 fprintf(fout, "struct {\n"); 408 fprintf(fout, "\tu_int %s_len;\n", name); 409 fprintf(fout, "\t%s%s *%s_val;\n", prefix, old, name); 410 fprintf(fout, "} %s", name); 411 break; 412 case REL_POINTER: 413 fprintf(fout, "%s%s *%s", prefix, old, name); 414 break; 415 case REL_VECTOR: 416 fprintf(fout, "%s%s %s[%s]", prefix, old, name, 417 def->def.ty.array_max); 418 break; 419 case REL_ALIAS: 420 fprintf(fout, "%s%s %s", prefix, old, name); 421 break; 422 } 423 fprintf(fout, ";\n"); 424 } 425 } 426 427 void 428 pdeclaration(name, dec, tab, separator) 429 char *name; 430 declaration *dec; 431 int tab; 432 char *separator; 433 { 434 char buf[8]; /* enough to hold "struct ", include NUL */ 435 char *prefix; 436 char *type; 437 438 if (streq(dec->type, "void")) 439 return; 440 tabify(fout, tab); 441 if (streq(dec->type, name) && !dec->prefix) { 442 fprintf(fout, "struct "); 443 } 444 if (streq(dec->type, "string")) { 445 fprintf(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 snprintf(buf, sizeof buf, "%s ", dec->prefix); 455 prefix = buf; 456 } 457 type = dec->type; 458 } 459 switch (dec->rel) { 460 case REL_ALIAS: 461 fprintf(fout, "%s%s %s", prefix, type, dec->name); 462 break; 463 case REL_VECTOR: 464 fprintf(fout, "%s%s %s[%s]", prefix, type, dec->name, 465 dec->array_max); 466 break; 467 case REL_POINTER: 468 fprintf(fout, "%s%s *%s", prefix, type, dec->name); 469 break; 470 case REL_ARRAY: 471 fprintf(fout, "struct {\n"); 472 tabify(fout, tab); 473 fprintf(fout, "\tu_int %s_len;\n", dec->name); 474 tabify(fout, tab); 475 fprintf(fout, "\t%s%s *%s_val;\n", prefix, type, dec->name); 476 tabify(fout, tab); 477 fprintf(fout, "} %s", dec->name); 478 break; 479 } 480 } 481 fprintf(fout, "%s", separator); 482 } 483 484 static int 485 undefined2(type, stop) 486 char *type; 487 char *stop; 488 { 489 list *l; 490 definition *def; 491 492 for (l = defined; l != NULL; l = l->next) { 493 def = (definition *) l->val; 494 if (def->def_kind != DEF_PROGRAM) { 495 if (streq(def->def_name, stop)) { 496 return (1); 497 } else if (streq(def->def_name, type)) { 498 return (0); 499 } 500 } 501 } 502 return (1); 503 } 504