1 /* $OpenBSD: rpc_hout.c,v 1.20 2011/04/06 11:36:26 miod Exp $ */ 2 /* $NetBSD: rpc_hout.c,v 1.4 1995/06/11 21:49:55 pk Exp $ */ 3 4 /* 5 * Copyright (c) 2010, Oracle America, Inc. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are 9 * met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials 16 * provided with the distribution. 17 * * Neither the name of the "Oracle America, Inc." nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 28 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* 36 * rpc_hout.c, Header file outputter for the RPC protocol compiler 37 */ 38 #include <sys/cdefs.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <ctype.h> 42 #include "rpc_parse.h" 43 #include "rpc_util.h" 44 45 static void pconstdef(definition *); 46 static void pargdef(definition *); 47 static void pstructdef(definition *); 48 static void puniondef(definition *); 49 static void pprogramdef(definition *); 50 static void penumdef(definition *); 51 static void ptypedef(definition *); 52 static void pdefine(char *, char *); 53 static void puldefine(char *, char *); 54 static int define_printed(proc_list *, version_list *); 55 static int undefined2(char *, char *); 56 static void parglist(proc_list *, char *); 57 void pxdrfuncdecl(char *, int); 58 void pprocdef(proc_list *, version_list *, char *, int, int); 59 void pdeclaration(char *, declaration *, int, char *); 60 61 /* 62 * Print the C-version of an xdr definition 63 */ 64 void 65 print_datadef(def) 66 definition *def; 67 { 68 69 if (def->def_kind == DEF_PROGRAM) /* handle data only */ 70 return; 71 72 if (def->def_kind != DEF_CONST) 73 fprintf(fout, "\n"); 74 switch (def->def_kind) { 75 case DEF_STRUCT: 76 pstructdef(def); 77 break; 78 case DEF_UNION: 79 puniondef(def); 80 break; 81 case DEF_ENUM: 82 penumdef(def); 83 break; 84 case DEF_TYPEDEF: 85 ptypedef(def); 86 break; 87 case DEF_PROGRAM: 88 pprogramdef(def); 89 break; 90 case DEF_CONST: 91 pconstdef(def); 92 break; 93 } 94 if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) { 95 pxdrfuncdecl(def->def_name, 96 def->def_kind != DEF_TYPEDEF || 97 !isvectordef(def->def.ty.old_type, def->def.ty.rel)); 98 } 99 } 100 101 102 void 103 print_funcdef(def) 104 definition *def; 105 { 106 switch (def->def_kind) { 107 case DEF_PROGRAM: 108 fprintf(fout, "\n"); 109 pprogramdef(def); 110 break; 111 } 112 } 113 114 void 115 pxdrfuncdecl(name, pointerp) 116 char *name; 117 int pointerp; 118 { 119 120 fprintf(fout,"#ifdef __cplusplus\n"); 121 fprintf(fout, "extern \"C\" bool_t xdr_%s(XDR *, %s %s);\n", 122 name, name, pointerp ? ("*") : ""); 123 fprintf(fout,"#elif defined(__STDC__)\n"); 124 fprintf(fout, "extern bool_t xdr_%s(XDR *, %s %s);\n", 125 name, name, pointerp ? ("*") : ""); 126 fprintf(fout,"#else /* Old Style C */\n"); 127 fprintf(fout, "bool_t xdr_%s();\n", name); 128 fprintf(fout,"#endif /* Old Style C */\n\n"); 129 } 130 131 132 static void 133 pconstdef(def) 134 definition *def; 135 { 136 pdefine(def->def_name, def->def.co); 137 } 138 139 /* 140 * print out the definitions for the arguments of functions in the 141 * header file 142 */ 143 static void 144 pargdef(def) 145 definition *def; 146 { 147 decl_list *l; 148 version_list *vers; 149 char *name; 150 proc_list *plist; 151 152 for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) { 153 for (plist = vers->procs; plist != NULL; 154 plist = plist->next) { 155 if (!newstyle || plist->arg_num < 2) { 156 continue; /* old style or single args */ 157 } 158 name = plist->args.argname; 159 fprintf(fout, "struct %s {\n", name); 160 for (l = plist->args.decls; 161 l != NULL; l = l->next) { 162 pdeclaration(name, &l->decl, 1, ";\n"); 163 } 164 fprintf(fout, "};\n"); 165 fprintf(fout, "typedef struct %s %s;\n", name, name); 166 pxdrfuncdecl(name, 0); 167 fprintf(fout, "\n"); 168 } 169 } 170 } 171 172 static void 173 pstructdef(def) 174 definition *def; 175 { 176 char *name = def->def_name; 177 decl_list *l; 178 179 fprintf(fout, "struct %s {\n", name); 180 for (l = def->def.st.decls; l != NULL; l = l->next) 181 pdeclaration(name, &l->decl, 1, ";\n"); 182 fprintf(fout, "};\n"); 183 fprintf(fout, "typedef struct %s %s;\n", name, name); 184 } 185 186 static void 187 puniondef(def) 188 definition *def; 189 { 190 case_list *l; 191 char *name = def->def_name; 192 declaration *decl; 193 194 fprintf(fout, "struct %s {\n", name); 195 decl = &def->def.un.enum_decl; 196 if (streq(decl->type, "bool")) { 197 fprintf(fout, "\tbool_t %s;\n", decl->name); 198 } else { 199 fprintf(fout, "\t%s %s;\n", decl->type, decl->name); 200 } 201 fprintf(fout, "\tunion {\n"); 202 for (l = def->def.un.cases; l != NULL; l = l->next) { 203 if (l->contflag == 0) 204 pdeclaration(name, &l->case_decl, 2, ";\n"); 205 } 206 decl = def->def.un.default_decl; 207 if (decl && !streq(decl->type, "void")) { 208 pdeclaration(name, decl, 2, ";\n"); 209 } 210 fprintf(fout, "\t} %s_u;\n", name); 211 fprintf(fout, "};\n"); 212 fprintf(fout, "typedef struct %s %s;\n", name, name); 213 } 214 215 static void 216 pdefine(name, num) 217 char *name; 218 char *num; 219 { 220 fprintf(fout, "#define %s %s\n", name, num); 221 } 222 223 static void 224 puldefine(name, num) 225 char *name; 226 char *num; 227 { 228 fprintf(fout, "#define %s ((u_long)%s)\n", name, num); 229 } 230 231 static int 232 define_printed(stop, start) 233 proc_list *stop; 234 version_list *start; 235 { 236 version_list *vers; 237 proc_list *proc; 238 239 for (vers = start; vers != NULL; vers = vers->next) { 240 for (proc = vers->procs; proc != NULL; proc = proc->next) { 241 if (proc == stop) { 242 return (0); 243 } else if (streq(proc->proc_name, stop->proc_name)) { 244 return (1); 245 } 246 } 247 } 248 abort(); 249 /* NOTREACHED */ 250 } 251 252 static void 253 pprogramdef(def) 254 definition *def; 255 { 256 version_list *vers; 257 proc_list *proc; 258 int i; 259 char *ext; 260 261 pargdef(def); 262 263 puldefine(def->def_name, def->def.pr.prog_num); 264 for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) { 265 if (tblflag) { 266 fprintf(fout, "extern struct rpcgen_table %s_%s_table[];\n", 267 locase(def->def_name), vers->vers_num); 268 fprintf(fout, "extern %s_%s_nproc;\n", 269 locase(def->def_name), vers->vers_num); 270 } 271 puldefine(vers->vers_name, vers->vers_num); 272 273 /* 274 * Print out 3 definitions, one for ANSI-C, another for C++, 275 * a third for old style C 276 */ 277 for (i=0; i<3; i++) { 278 if (i==0) { 279 fprintf(fout,"\n#ifdef __cplusplus\n"); 280 ext = "extern \"C\" "; 281 } else if (i==1) { 282 fprintf(fout,"\n#elif defined(__STDC__)\n"); 283 ext = "extern "; 284 } else { 285 fprintf(fout,"\n#else /* Old Style C */\n"); 286 ext = "extern "; 287 } 288 289 for (proc = vers->procs; proc != NULL; proc = proc->next) { 290 if (!define_printed(proc, def->def.pr.versions)) 291 puldefine(proc->proc_name, proc->proc_num); 292 fprintf(fout,"%s",ext); 293 pprocdef(proc, vers, "CLIENT *", 0,i); 294 fprintf(fout,"%s",ext); 295 pprocdef(proc, vers, "struct svc_req *", 1,i); 296 } 297 } 298 fprintf(fout,"#endif /* Old Style C */\n"); 299 } 300 } 301 302 void 303 pprocdef(proc, vp, addargtype, server_p,mode) 304 proc_list *proc; 305 version_list *vp; 306 char *addargtype; 307 int server_p; 308 int mode; 309 { 310 311 ptype(proc->res_prefix, proc->res_type, 1); 312 fprintf(fout, "* "); 313 if (server_p) 314 pvname_svc(proc->proc_name, vp->vers_num); 315 else 316 pvname(proc->proc_name, vp->vers_num); 317 318 /* 319 * mode 0 == cplusplus, mode 1 = ANSI-C, mode 2 = old style C 320 */ 321 if (mode == 0 || mode == 1) 322 parglist(proc, addargtype); 323 else 324 fprintf(fout, "();\n"); 325 } 326 327 /* print out argument list of procedure */ 328 static void 329 parglist(proc, addargtype) 330 proc_list *proc; 331 char *addargtype; 332 { 333 decl_list *dl; 334 335 fprintf(fout,"("); 336 337 if (proc->arg_num < 2 && newstyle && 338 streq(proc->args.decls->decl.type, "void")) { 339 /* 0 argument in new style: do nothing */ 340 } else { 341 for (dl = proc->args.decls; dl != NULL; dl = dl->next) { 342 ptype(dl->decl.prefix, dl->decl.type, 1); 343 if (!newstyle) 344 fprintf(fout, "*"); /* old style passes by reference */ 345 fprintf(fout, ", "); 346 } 347 } 348 fprintf(fout, "%s);\n", addargtype); 349 } 350 351 static void 352 penumdef(def) 353 definition *def; 354 { 355 char *name = def->def_name; 356 enumval_list *l; 357 char *last = NULL; 358 int count = 0; 359 360 fprintf(fout, "enum %s {\n", name); 361 for (l = def->def.en.vals; l != NULL; l = l->next) { 362 fprintf(fout, "\t%s", l->name); 363 if (l->assignment) { 364 fprintf(fout, " = %s", l->assignment); 365 last = l->assignment; 366 count = 1; 367 } else { 368 if (last == NULL) { 369 fprintf(fout, " = %d", count++); 370 } else { 371 fprintf(fout, " = %s + %d", last, count++); 372 } 373 } 374 if (l->next) 375 fprintf(fout, ",\n"); 376 else 377 fprintf(fout, "\n"); 378 } 379 fprintf(fout, "};\n"); 380 fprintf(fout, "typedef enum %s %s;\n", name, name); 381 } 382 383 static void 384 ptypedef(def) 385 definition *def; 386 { 387 char *name = def->def_name; 388 char *old = def->def.ty.old_type; 389 char prefix[8]; /* enough to contain "struct ", including NUL */ 390 relation rel = def->def.ty.rel; 391 392 if (!streq(name, old)) { 393 if (streq(old, "string")) { 394 old = "char"; 395 rel = REL_POINTER; 396 } else if (streq(old, "opaque")) { 397 old = "char"; 398 } else if (streq(old, "bool")) { 399 old = "bool_t"; 400 } 401 if (undefined2(old, name) && def->def.ty.old_prefix) { 402 snprintf(prefix, sizeof prefix, "%s ", def->def.ty.old_prefix); 403 } else { 404 prefix[0] = 0; 405 } 406 fprintf(fout, "typedef "); 407 switch (rel) { 408 case REL_ARRAY: 409 fprintf(fout, "struct {\n"); 410 fprintf(fout, "\tu_int %s_len;\n", name); 411 fprintf(fout, "\t%s%s *%s_val;\n", prefix, old, name); 412 fprintf(fout, "} %s", name); 413 break; 414 case REL_POINTER: 415 fprintf(fout, "%s%s *%s", prefix, old, name); 416 break; 417 case REL_VECTOR: 418 fprintf(fout, "%s%s %s[%s]", prefix, old, name, 419 def->def.ty.array_max); 420 break; 421 case REL_ALIAS: 422 fprintf(fout, "%s%s %s", prefix, old, name); 423 break; 424 } 425 fprintf(fout, ";\n"); 426 } 427 } 428 429 void 430 pdeclaration(name, dec, tab, separator) 431 char *name; 432 declaration *dec; 433 int tab; 434 char *separator; 435 { 436 char buf[8]; /* enough to hold "struct ", include NUL */ 437 char *prefix; 438 char *type; 439 440 if (streq(dec->type, "void")) 441 return; 442 tabify(fout, tab); 443 if (streq(dec->type, name) && !dec->prefix) { 444 fprintf(fout, "struct "); 445 } 446 if (streq(dec->type, "string")) { 447 fprintf(fout, "char *%s", dec->name); 448 } else { 449 prefix = ""; 450 if (streq(dec->type, "bool")) { 451 type = "bool_t"; 452 } else if (streq(dec->type, "opaque")) { 453 type = "char"; 454 } else { 455 if (dec->prefix) { 456 snprintf(buf, sizeof buf, "%s ", dec->prefix); 457 prefix = buf; 458 } 459 type = dec->type; 460 } 461 switch (dec->rel) { 462 case REL_ALIAS: 463 fprintf(fout, "%s%s %s", prefix, type, dec->name); 464 break; 465 case REL_VECTOR: 466 fprintf(fout, "%s%s %s[%s]", prefix, type, dec->name, 467 dec->array_max); 468 break; 469 case REL_POINTER: 470 fprintf(fout, "%s%s *%s", prefix, type, dec->name); 471 break; 472 case REL_ARRAY: 473 fprintf(fout, "struct {\n"); 474 tabify(fout, tab); 475 fprintf(fout, "\tu_int %s_len;\n", dec->name); 476 tabify(fout, tab); 477 fprintf(fout, "\t%s%s *%s_val;\n", prefix, type, dec->name); 478 tabify(fout, tab); 479 fprintf(fout, "} %s", dec->name); 480 break; 481 } 482 } 483 fprintf(fout, "%s", separator); 484 } 485 486 static int 487 undefined2(type, stop) 488 char *type; 489 char *stop; 490 { 491 list *l; 492 definition *def; 493 494 for (l = defined; l != NULL; l = l->next) { 495 def = (definition *) l->val; 496 if (def->def_kind != DEF_PROGRAM) { 497 if (streq(def->def_name, stop)) { 498 return (1); 499 } else if (streq(def->def_name, type)) { 500 return (0); 501 } 502 } 503 } 504 return (1); 505 } 506