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/* 31 * rpc_util.c, Utility routines for the RPC protocol compiler 32 * Copyright (C) 1989, Sun Microsystems, Inc. 33 */ 34#include <err.h> 35#include <ctype.h> 36#include <stdio.h> 37#include <string.h> 38#include <unistd.h> 39#include "rpc_parse.h" 40#include "rpc_scan.h" 41#include "rpc_util.h" 42 43#define ARGEXT "argument" 44 45char curline[MAXLINESIZE]; /* current read line */ 46char *where = curline; /* current point in line */ 47int linenum = 0; /* current line number */ 48 49const char *infilename; /* input filename */ 50 51#define NFILES 7 52static const char *outfiles[NFILES]; /* output file names */ 53static int nfiles; 54 55FILE *fout; /* file pointer of current output */ 56FILE *fin; /* file pointer of current input */ 57 58list *defined; /* list of defined things */ 59 60static void printwhere( void ); 61 62/* 63 * Reinitialize the world 64 */ 65void 66reinitialize(void) 67{ 68 memset(curline, 0, MAXLINESIZE); 69 where = curline; 70 linenum = 0; 71 defined = NULL; 72} 73 74/* 75 * string equality 76 */ 77int 78streq(const char *a, const char *b) 79{ 80 return (strcmp(a, b) == 0); 81} 82 83/* 84 * find a value in a list 85 */ 86definition * 87findval(list *lst, const char *val, int (*cmp)(definition *, const char *)) 88{ 89 for (; lst != NULL; lst = lst->next) { 90 if ((*cmp) (lst->val, val)) { 91 return (lst->val); 92 } 93 } 94 return (NULL); 95} 96 97/* 98 * store a value in a list 99 */ 100void 101storeval(list **lstp, definition *val) 102{ 103 list **l; 104 list *lst; 105 106 for (l = lstp; *l != NULL; l = (list **) & (*l)->next); 107 lst = XALLOC(list); 108 lst->val = val; 109 lst->next = NULL; 110 *l = lst; 111} 112 113static int 114findit(definition *def, const char *type) 115{ 116 return (streq(def->def_name, type)); 117} 118 119static const char * 120fixit(const char *type, const char *orig) 121{ 122 definition *def; 123 124 def = (definition *) FINDVAL(defined, type, findit); 125 if (def == NULL || def->def_kind != DEF_TYPEDEF) { 126 return (orig); 127 } 128 switch (def->def.ty.rel) { 129 case REL_VECTOR: 130 if (streq(def->def.ty.old_type, "opaque")) 131 return ("char"); 132 else 133 return (def->def.ty.old_type); 134 135 case REL_ALIAS: 136 return (fixit(def->def.ty.old_type, orig)); 137 default: 138 return (orig); 139 } 140} 141 142const char * 143fixtype(const char *type) 144{ 145 return (fixit(type, type)); 146} 147 148const char * 149stringfix(const char *type) 150{ 151 if (streq(type, "string")) { 152 return ("wrapstring"); 153 } else { 154 return (type); 155 } 156} 157 158void 159ptype(const char *prefix, const char *type, int follow) 160{ 161 if (prefix != NULL) { 162 if (streq(prefix, "enum")) { 163 f_print(fout, "enum "); 164 } else { 165 f_print(fout, "struct "); 166 } 167 } 168 if (streq(type, "bool")) { 169 f_print(fout, "bool_t "); 170 } else if (streq(type, "string")) { 171 f_print(fout, "char *"); 172 } else { 173 f_print(fout, "%s ", follow ? fixtype(type) : type); 174 } 175} 176 177static int 178typedefed(definition *def, const char *type) 179{ 180 if (def->def_kind != DEF_TYPEDEF || def->def.ty.old_prefix != NULL) { 181 return (0); 182 } else { 183 return (streq(def->def_name, type)); 184 } 185} 186 187int 188isvectordef(const char *type, relation rel) 189{ 190 definition *def; 191 192 for (;;) { 193 switch (rel) { 194 case REL_VECTOR: 195 return (!streq(type, "string")); 196 case REL_ARRAY: 197 return (0); 198 case REL_POINTER: 199 return (0); 200 case REL_ALIAS: 201 def = (definition *) FINDVAL(defined, type, typedefed); 202 if (def == NULL) { 203 return (0); 204 } 205 type = def->def.ty.old_type; 206 rel = def->def.ty.rel; 207 } 208 } 209 210 return (0); 211} 212 213char * 214locase(const char *str) 215{ 216 char c; 217 static char buf[100]; 218 char *p = buf; 219 220 while ( (c = *str++) ) { 221 *p++ = (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c; 222 } 223 *p = 0; 224 return (buf); 225} 226 227void 228pvname_svc(const char *pname, const char *vnum) 229{ 230 f_print(fout, "%s_%s_svc", locase(pname), vnum); 231} 232 233void 234pvname(const char *pname, const char *vnum) 235{ 236 f_print(fout, "%s_%s", locase(pname), vnum); 237} 238 239/* 240 * print a useful (?) error message, and then die 241 */ 242void 243error(const char *msg) 244{ 245 printwhere(); 246 warnx("%s, line %d: %s", infilename, linenum, msg); 247 crash(); 248} 249 250/* 251 * Something went wrong, unlink any files that we may have created and then 252 * die. 253 */ 254void __dead2 255crash(void) 256{ 257 int i; 258 259 for (i = 0; i < nfiles; i++) { 260 (void) unlink(outfiles[i]); 261 } 262 exit(1); 263} 264 265void 266record_open(const char *file) 267{ 268 if (nfiles < NFILES) { 269 outfiles[nfiles++] = file; 270 } else { 271 warnx("too many files"); 272 crash(); 273 } 274} 275 276static char expectbuf[100]; 277static const char *toktostr(tok_kind kind); 278 279/* 280 * error, token encountered was not the expected one 281 */ 282void 283expected1(tok_kind exp1) 284{ 285 s_print(expectbuf, "expected '%s'", 286 toktostr(exp1)); 287 error(expectbuf); 288} 289 290/* 291 * error, token encountered was not one of two expected ones 292 */ 293void 294expected2(tok_kind exp1, tok_kind exp2) 295{ 296 s_print(expectbuf, "expected '%s' or '%s'", 297 toktostr(exp1), 298 toktostr(exp2)); 299 error(expectbuf); 300} 301 302/* 303 * error, token encountered was not one of 3 expected ones 304 */ 305void 306expected3(tok_kind exp1, tok_kind exp2, tok_kind exp3) 307{ 308 s_print(expectbuf, "expected '%s', '%s' or '%s'", 309 toktostr(exp1), 310 toktostr(exp2), 311 toktostr(exp3)); 312 error(expectbuf); 313} 314 315void 316tabify(FILE *f, int tab) 317{ 318 while (tab--) { 319 (void) fputc('\t', f); 320 } 321} 322 323 324static token tokstrings[] = { 325 {TOK_IDENT, "identifier"}, 326 {TOK_CONST, "const"}, 327 {TOK_RPAREN, ")"}, 328 {TOK_LPAREN, "("}, 329 {TOK_RBRACE, "}"}, 330 {TOK_LBRACE, "{"}, 331 {TOK_LBRACKET, "["}, 332 {TOK_RBRACKET, "]"}, 333 {TOK_STAR, "*"}, 334 {TOK_COMMA, ","}, 335 {TOK_EQUAL, "="}, 336 {TOK_COLON, ":"}, 337 {TOK_SEMICOLON, ";"}, 338 {TOK_UNION, "union"}, 339 {TOK_STRUCT, "struct"}, 340 {TOK_SWITCH, "switch"}, 341 {TOK_CASE, "case"}, 342 {TOK_DEFAULT, "default"}, 343 {TOK_ENUM, "enum"}, 344 {TOK_TYPEDEF, "typedef"}, 345 {TOK_INT, "int"}, 346 {TOK_SHORT, "short"}, 347 {TOK_LONG, "long"}, 348 {TOK_UNSIGNED, "unsigned"}, 349 {TOK_DOUBLE, "double"}, 350 {TOK_FLOAT, "float"}, 351 {TOK_CHAR, "char"}, 352 {TOK_STRING, "string"}, 353 {TOK_OPAQUE, "opaque"}, 354 {TOK_BOOL, "bool"}, 355 {TOK_VOID, "void"}, 356 {TOK_PROGRAM, "program"}, 357 {TOK_VERSION, "version"}, 358 {TOK_EOF, "??????"} 359}; 360 361static const char * 362toktostr(tok_kind kind) 363{ 364 token *sp; 365 366 for (sp = tokstrings; sp->kind != TOK_EOF && sp->kind != kind; sp++); 367 return (sp->str); 368} 369 370static void 371printbuf(void) 372{ 373 char c; 374 int i; 375 int cnt; 376 377# define TABSIZE 4 378 379 for (i = 0; (c = curline[i]); i++) { 380 if (c == '\t') { 381 cnt = 8 - (i % TABSIZE); 382 c = ' '; 383 } else { 384 cnt = 1; 385 } 386 while (cnt--) { 387 (void) fputc(c, stderr); 388 } 389 } 390} 391 392static void 393printwhere(void) 394{ 395 int i; 396 char c; 397 int cnt; 398 399 printbuf(); 400 for (i = 0; i < where - curline; i++) { 401 c = curline[i]; 402 if (c == '\t') { 403 cnt = 8 - (i % TABSIZE); 404 } else { 405 cnt = 1; 406 } 407 while (cnt--) { 408 (void) fputc('^', stderr); 409 } 410 } 411 (void) fputc('\n', stderr); 412} 413 414char * 415make_argname(const char *pname, const char *vname) 416{ 417 char *name; 418 419 name = xmalloc(strlen(pname) + strlen(vname) + strlen(ARGEXT) + 3); 420 sprintf(name, "%s_%s_%s", locase(pname), vname, ARGEXT); 421 return (name); 422} 423 424bas_type *typ_list_h; 425bas_type *typ_list_t; 426 427void 428add_type(int len, const char *type) 429{ 430 bas_type *ptr; 431 432 ptr = XALLOC(bas_type); 433 434 ptr->name = type; 435 ptr->length = len; 436 ptr->next = NULL; 437 if (typ_list_t == NULL) 438 { 439 440 typ_list_t = ptr; 441 typ_list_h = ptr; 442 } 443 else 444 { 445 typ_list_t->next = ptr; 446 typ_list_t = ptr; 447 } 448} 449 450 451bas_type * 452find_type(const char *type) 453{ 454 bas_type * ptr; 455 456 ptr = typ_list_h; 457 while (ptr != NULL) 458 { 459 if (strcmp(ptr->name, type) == 0) 460 return (ptr); 461 else 462 ptr = ptr->next; 463 } 464 return (NULL); 465} 466 467void * 468xmalloc(size_t size) 469{ 470 void *p; 471 472 if ((p = malloc(size)) == NULL) { 473 warnx("malloc failed"); 474 crash(); 475 } 476 return (p); 477} 478 479void * 480xrealloc(void *ptr, size_t size) 481{ 482 void *p; 483 484 if ((p = realloc(ptr, size)) == NULL) { 485 warnx("realloc failed"); 486 crash(); 487 } 488 return (p); 489} 490 491char * 492xstrdup(const char *str) 493{ 494 char *p; 495 496 if ((p = strdup(str)) == NULL) { 497 warnx("strdup failed"); 498 crash(); 499 } 500 return (p); 501} 502