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
45 char curline[MAXLINESIZE]; /* current read line */
46 char *where = curline; /* current point in line */
47 int linenum = 0; /* current line number */
48
49 const char *infilename; /* input filename */
50
51 #define NFILES 7
52 static const char *outfiles[NFILES]; /* output file names */
53 static int nfiles;
54
55 FILE *fout; /* file pointer of current output */
56 FILE *fin; /* file pointer of current input */
57
58 list *defined; /* list of defined things */
59
60 static void printwhere( void );
61
62 /*
63 * Reinitialize the world
64 */
65 void
reinitialize(void)66 reinitialize(void)
67 {
68 memset(curline, 0, MAXLINESIZE);
69 where = curline;
70 linenum = 0;
71 defined = NULL;
72 }
73
74 /*
75 * string equality
76 */
77 int
streq(const char * a,const char * b)78 streq(const char *a, const char *b)
79 {
80 return (strcmp(a, b) == 0);
81 }
82
83 /*
84 * find a value in a list
85 */
86 definition *
findval(list * lst,const char * val,int (* cmp)(definition *,const char *))87 findval(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 */
100 void
storeval(list ** lstp,definition * val)101 storeval(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
113 static int
findit(definition * def,const char * type)114 findit(definition *def, const char *type)
115 {
116 return (streq(def->def_name, type));
117 }
118
119 static const char *
fixit(const char * type,const char * orig)120 fixit(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
142 const char *
fixtype(const char * type)143 fixtype(const char *type)
144 {
145 return (fixit(type, type));
146 }
147
148 const char *
stringfix(const char * type)149 stringfix(const char *type)
150 {
151 if (streq(type, "string")) {
152 return ("wrapstring");
153 } else {
154 return (type);
155 }
156 }
157
158 void
ptype(const char * prefix,const char * type,int follow)159 ptype(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
177 static int
typedefed(definition * def,const char * type)178 typedefed(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
187 int
isvectordef(const char * type,relation rel)188 isvectordef(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
213 char *
locase(const char * str)214 locase(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
227 void
pvname_svc(const char * pname,const char * vnum)228 pvname_svc(const char *pname, const char *vnum)
229 {
230 f_print(fout, "%s_%s_svc", locase(pname), vnum);
231 }
232
233 void
pvname(const char * pname,const char * vnum)234 pvname(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 */
242 void
error(const char * msg)243 error(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 */
254 void __dead2
crash(void)255 crash(void)
256 {
257 int i;
258
259 for (i = 0; i < nfiles; i++) {
260 (void) unlink(outfiles[i]);
261 }
262 exit(1);
263 }
264
265 void
record_open(const char * file)266 record_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
276 static char expectbuf[100];
277 static const char *toktostr(tok_kind kind);
278
279 /*
280 * error, token encountered was not the expected one
281 */
282 void
expected1(tok_kind exp1)283 expected1(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 */
293 void
expected2(tok_kind exp1,tok_kind exp2)294 expected2(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 */
305 void
expected3(tok_kind exp1,tok_kind exp2,tok_kind exp3)306 expected3(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
315 void
tabify(FILE * f,int tab)316 tabify(FILE *f, int tab)
317 {
318 while (tab--) {
319 (void) fputc('\t', f);
320 }
321 }
322
323
324 static 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
361 static const char *
toktostr(tok_kind kind)362 toktostr(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
370 static void
printbuf(void)371 printbuf(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
392 static void
printwhere(void)393 printwhere(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
414 char *
make_argname(const char * pname,const char * vname)415 make_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
424 bas_type *typ_list_h;
425 bas_type *typ_list_t;
426
427 void
add_type(int len,const char * type)428 add_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
451 bas_type *
find_type(const char * type)452 find_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
467 void *
xmalloc(size_t size)468 xmalloc(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
479 void *
xrealloc(void * ptr,size_t size)480 xrealloc(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
491 char *
xstrdup(const char * str)492 xstrdup(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