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 #if 0 31 #ifndef lint 32 #ident "@(#)rpc_util.c 1.14 93/07/05 SMI" 33 static char sccsid[] = "@(#)rpc_util.c 1.11 89/02/22 (C) 1987 SMI"; 34 #endif 35 #endif 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 /* 41 * rpc_util.c, Utility routines for the RPC protocol compiler 42 * Copyright (C) 1989, Sun Microsystems, Inc. 43 */ 44 #include <err.h> 45 #include <ctype.h> 46 #include <stdio.h> 47 #include <string.h> 48 #include <unistd.h> 49 #include "rpc_parse.h" 50 #include "rpc_scan.h" 51 #include "rpc_util.h" 52 53 #define ARGEXT "argument" 54 55 char curline[MAXLINESIZE]; /* current read line */ 56 char *where = curline; /* current point in line */ 57 int linenum = 0; /* current line number */ 58 59 const char *infilename; /* input filename */ 60 61 #define NFILES 7 62 const char *outfiles[NFILES]; /* output file names */ 63 int nfiles; 64 65 FILE *fout; /* file pointer of current output */ 66 FILE *fin; /* file pointer of current input */ 67 68 list *defined; /* list of defined things */ 69 70 static void printwhere( void ); 71 72 /* 73 * Reinitialize the world 74 */ 75 void 76 reinitialize(void) 77 { 78 memset(curline, 0, MAXLINESIZE); 79 where = curline; 80 linenum = 0; 81 defined = NULL; 82 } 83 84 /* 85 * string equality 86 */ 87 int 88 streq(const char *a, const char *b) 89 { 90 return (strcmp(a, b) == 0); 91 } 92 93 /* 94 * find a value in a list 95 */ 96 definition * 97 findval(list *lst, const char *val, int (*cmp)(definition *, const char *)) 98 { 99 for (; lst != NULL; lst = lst->next) { 100 if ((*cmp) (lst->val, val)) { 101 return (lst->val); 102 } 103 } 104 return (NULL); 105 } 106 107 /* 108 * store a value in a list 109 */ 110 void 111 storeval(list **lstp, definition *val) 112 { 113 list **l; 114 list *lst; 115 116 for (l = lstp; *l != NULL; l = (list **) & (*l)->next); 117 lst = XALLOC(list); 118 lst->val = val; 119 lst->next = NULL; 120 *l = lst; 121 } 122 123 static int 124 findit(definition *def, const char *type) 125 { 126 return (streq(def->def_name, type)); 127 } 128 129 static const char * 130 fixit(const char *type, const char *orig) 131 { 132 definition *def; 133 134 def = (definition *) FINDVAL(defined, type, findit); 135 if (def == NULL || def->def_kind != DEF_TYPEDEF) { 136 return (orig); 137 } 138 switch (def->def.ty.rel) { 139 case REL_VECTOR: 140 if (streq(def->def.ty.old_type, "opaque")) 141 return ("char"); 142 else 143 return (def->def.ty.old_type); 144 145 case REL_ALIAS: 146 return (fixit(def->def.ty.old_type, orig)); 147 default: 148 return (orig); 149 } 150 } 151 152 const char * 153 fixtype(const char *type) 154 { 155 return (fixit(type, type)); 156 } 157 158 const char * 159 stringfix(const char *type) 160 { 161 if (streq(type, "string")) { 162 return ("wrapstring"); 163 } else { 164 return (type); 165 } 166 } 167 168 void 169 ptype(const char *prefix, const char *type, int follow) 170 { 171 if (prefix != NULL) { 172 if (streq(prefix, "enum")) { 173 f_print(fout, "enum "); 174 } else { 175 f_print(fout, "struct "); 176 } 177 } 178 if (streq(type, "bool")) { 179 f_print(fout, "bool_t "); 180 } else if (streq(type, "string")) { 181 f_print(fout, "char *"); 182 } else { 183 f_print(fout, "%s ", follow ? fixtype(type) : type); 184 } 185 } 186 187 static int 188 typedefed(definition *def, const char *type) 189 { 190 if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL) { 191 return (0); 192 } else { 193 return (streq(def->def_name, type)); 194 } 195 } 196 197 int 198 isvectordef(const char *type, relation rel) 199 { 200 definition *def; 201 202 for (;;) { 203 switch (rel) { 204 case REL_VECTOR: 205 return (!streq(type, "string")); 206 case REL_ARRAY: 207 return (0); 208 case REL_POINTER: 209 return (0); 210 case REL_ALIAS: 211 def = (definition *) FINDVAL(defined, type, typedefed); 212 if (def == NULL) { 213 return (0); 214 } 215 type = def->def.ty.old_type; 216 rel = def->def.ty.rel; 217 } 218 } 219 220 return (0); 221 } 222 223 char * 224 locase(const char *str) 225 { 226 char c; 227 static char buf[100]; 228 char *p = buf; 229 230 while ( (c = *str++) ) { 231 *p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c; 232 } 233 *p = 0; 234 return (buf); 235 } 236 237 void 238 pvname_svc(const char *pname, const char *vnum) 239 { 240 f_print(fout, "%s_%s_svc", locase(pname), vnum); 241 } 242 243 void 244 pvname(const char *pname, const char *vnum) 245 { 246 f_print(fout, "%s_%s", locase(pname), vnum); 247 } 248 249 /* 250 * print a useful (?) error message, and then die 251 */ 252 void 253 error(const char *msg) 254 { 255 printwhere(); 256 warnx("%s, line %d: %s", infilename, linenum, msg); 257 crash(); 258 } 259 260 /* 261 * Something went wrong, unlink any files that we may have created and then 262 * die. 263 */ 264 void 265 crash(void) 266 { 267 int i; 268 269 for (i = 0; i < nfiles; i++) { 270 (void) unlink(outfiles[i]); 271 } 272 exit(1); 273 } 274 275 void 276 record_open(const char *file) 277 { 278 if (nfiles < NFILES) { 279 outfiles[nfiles++] = file; 280 } else { 281 warnx("too many files"); 282 crash(); 283 } 284 } 285 286 static char expectbuf[100]; 287 static const char *toktostr(tok_kind kind); 288 289 /* 290 * error, token encountered was not the expected one 291 */ 292 void 293 expected1(tok_kind exp1) 294 { 295 s_print(expectbuf, "expected '%s'", 296 toktostr(exp1)); 297 error(expectbuf); 298 } 299 300 /* 301 * error, token encountered was not one of two expected ones 302 */ 303 void 304 expected2(tok_kind exp1, tok_kind exp2) 305 { 306 s_print(expectbuf, "expected '%s' or '%s'", 307 toktostr(exp1), 308 toktostr(exp2)); 309 error(expectbuf); 310 } 311 312 /* 313 * error, token encountered was not one of 3 expected ones 314 */ 315 void 316 expected3(tok_kind exp1, tok_kind exp2, tok_kind exp3) 317 { 318 s_print(expectbuf, "expected '%s', '%s' or '%s'", 319 toktostr(exp1), 320 toktostr(exp2), 321 toktostr(exp3)); 322 error(expectbuf); 323 } 324 325 void 326 tabify(FILE *f, int tab) 327 { 328 while (tab--) { 329 (void) fputc('\t', f); 330 } 331 } 332 333 334 static token tokstrings[] = { 335 {TOK_IDENT, "identifier"}, 336 {TOK_CONST, "const"}, 337 {TOK_RPAREN, ")"}, 338 {TOK_LPAREN, "("}, 339 {TOK_RBRACE, "}"}, 340 {TOK_LBRACE, "{"}, 341 {TOK_LBRACKET, "["}, 342 {TOK_RBRACKET, "]"}, 343 {TOK_STAR, "*"}, 344 {TOK_COMMA, ","}, 345 {TOK_EQUAL, "="}, 346 {TOK_COLON, ":"}, 347 {TOK_SEMICOLON, ";"}, 348 {TOK_UNION, "union"}, 349 {TOK_STRUCT, "struct"}, 350 {TOK_SWITCH, "switch"}, 351 {TOK_CASE, "case"}, 352 {TOK_DEFAULT, "default"}, 353 {TOK_ENUM, "enum"}, 354 {TOK_TYPEDEF, "typedef"}, 355 {TOK_INT, "int"}, 356 {TOK_SHORT, "short"}, 357 {TOK_LONG, "long"}, 358 {TOK_UNSIGNED, "unsigned"}, 359 {TOK_DOUBLE, "double"}, 360 {TOK_FLOAT, "float"}, 361 {TOK_CHAR, "char"}, 362 {TOK_STRING, "string"}, 363 {TOK_OPAQUE, "opaque"}, 364 {TOK_BOOL, "bool"}, 365 {TOK_VOID, "void"}, 366 {TOK_PROGRAM, "program"}, 367 {TOK_VERSION, "version"}, 368 {TOK_EOF, "??????"} 369 }; 370 371 static const char * 372 toktostr(tok_kind kind) 373 { 374 token *sp; 375 376 for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++); 377 return (sp->str); 378 } 379 380 static void 381 printbuf(void) 382 { 383 char c; 384 int i; 385 int cnt; 386 387 # define TABSIZE 4 388 389 for (i = 0; (c = curline[i]); i++) { 390 if (c == '\t') { 391 cnt = 8 - (i % TABSIZE); 392 c = ' '; 393 } else { 394 cnt = 1; 395 } 396 while (cnt--) { 397 (void) fputc(c, stderr); 398 } 399 } 400 } 401 402 static void 403 printwhere(void) 404 { 405 int i; 406 char c; 407 int cnt; 408 409 printbuf(); 410 for (i = 0; i < where - curline; i++) { 411 c = curline[i]; 412 if (c == '\t') { 413 cnt = 8 - (i % TABSIZE); 414 } else { 415 cnt = 1; 416 } 417 while (cnt--) { 418 (void) fputc('^', stderr); 419 } 420 } 421 (void) fputc('\n', stderr); 422 } 423 424 char * 425 make_argname(const char *pname, const char *vname) 426 { 427 char *name; 428 429 name = xmalloc(strlen(pname) + strlen(vname) + strlen(ARGEXT) + 3); 430 sprintf(name, "%s_%s_%s", locase(pname), vname, ARGEXT); 431 return (name); 432 } 433 434 bas_type *typ_list_h; 435 bas_type *typ_list_t; 436 437 void 438 add_type(int len, const char *type) 439 { 440 bas_type *ptr; 441 442 ptr = XALLOC(bas_type); 443 444 ptr->name = type; 445 ptr->length = len; 446 ptr->next = NULL; 447 if (typ_list_t == NULL) 448 { 449 450 typ_list_t = ptr; 451 typ_list_h = ptr; 452 } 453 else 454 { 455 typ_list_t->next = ptr; 456 typ_list_t = ptr; 457 }; 458 } 459 460 461 bas_type * 462 find_type(const char *type) 463 { 464 bas_type * ptr; 465 466 ptr = typ_list_h; 467 while (ptr != NULL) 468 { 469 if (strcmp(ptr->name, type) == 0) 470 return (ptr); 471 else 472 ptr = ptr->next; 473 }; 474 return (NULL); 475 } 476 477 void * 478 xmalloc(size_t size) 479 { 480 void *p; 481 482 if ((p = malloc(size)) == NULL) { 483 warnx("malloc failed"); 484 crash(); 485 } 486 return (p); 487 } 488 489 void * 490 xrealloc(void *ptr, size_t size) 491 { 492 void *p; 493 494 if ((p = realloc(ptr, size)) == NULL) { 495 warnx("realloc failed"); 496 crash(); 497 } 498 return (p); 499 } 500 501 char * 502 xstrdup(const char *str) 503 { 504 char *p; 505 506 if ((p = strdup(str)) == NULL) { 507 warnx("strdup failed"); 508 crash(); 509 } 510 return (p); 511 } 512