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_cout.c 1.14 93/07/05 SMI"
33 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI";
34 #endif
35 #endif
36
37 #include <sys/cdefs.h>
38 /*
39 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler
40 * Copyright (C) 1987, Sun Microsystems, Inc.
41 */
42 #include <ctype.h>
43 #include <stdio.h>
44 #include <string.h>
45 #include "rpc_parse.h"
46 #include "rpc_scan.h"
47 #include "rpc_util.h"
48
49 static void print_header( definition * );
50 static void print_trailer( void );
51 static void print_stat( int , declaration * );
52 static void emit_enum( definition * );
53 static void emit_program( definition * );
54 static void emit_union( definition * );
55 static void emit_struct( definition * );
56 static void emit_typedef( definition * );
57 static void emit_inline( int, declaration *, int );
58 static void emit_single_in_line( int, declaration *, int, relation );
59
60 /*
61 * Emit the C-routine for the given definition
62 */
63 void
emit(definition * def)64 emit(definition *def)
65 {
66 if (def->def_kind == DEF_CONST) {
67 return;
68 }
69 if (def->def_kind == DEF_PROGRAM) {
70 emit_program(def);
71 return;
72 }
73 if (def->def_kind == DEF_TYPEDEF) {
74 /*
75 * now we need to handle declarations like
76 * struct typedef foo foo;
77 * since we dont want this to be expanded into 2 calls to xdr_foo
78 */
79
80 if (strcmp(def->def.ty.old_type, def->def_name) == 0)
81 return;
82 }
83 print_header(def);
84 switch (def->def_kind) {
85 case DEF_UNION:
86 emit_union(def);
87 break;
88 case DEF_ENUM:
89 emit_enum(def);
90 break;
91 case DEF_STRUCT:
92 emit_struct(def);
93 break;
94 case DEF_TYPEDEF:
95 emit_typedef(def);
96 break;
97 /* DEF_CONST and DEF_PROGRAM have already been handled */
98 default:
99 break;
100 }
101 print_trailer();
102 }
103
104 static int
findtype(definition * def,const char * type)105 findtype(definition *def, const char *type)
106 {
107
108 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) {
109 return (0);
110 } else {
111 return (streq(def->def_name, type));
112 }
113 }
114
115 static int
undefined(const char * type)116 undefined(const char *type)
117 {
118 definition *def;
119
120 def = (definition *) FINDVAL(defined, type, findtype);
121 return (def == NULL);
122 }
123
124
125 static void
print_generic_header(const char * procname,int pointerp)126 print_generic_header(const char *procname, int pointerp)
127 {
128 f_print(fout, "\n");
129 f_print(fout, "bool_t\n");
130 f_print(fout, "xdr_%s(", procname);
131 f_print(fout, "XDR *xdrs, ");
132 f_print(fout, "%s ", procname);
133 if (pointerp)
134 f_print(fout, "*");
135 f_print(fout, "objp)\n{\n\n");
136 }
137
138 static void
print_header(definition * def)139 print_header(definition *def)
140 {
141 print_generic_header(def->def_name,
142 def->def_kind != DEF_TYPEDEF ||
143 !isvectordef(def->def.ty.old_type,
144 def->def.ty.rel));
145 /* Now add Inline support */
146
147 if (inline_size == 0)
148 return;
149 /* May cause lint to complain. but ... */
150 f_print(fout, "\tregister long *buf;\n\n");
151 }
152
153 static void
print_prog_header(proc_list * plist)154 print_prog_header(proc_list *plist)
155 {
156 print_generic_header(plist->args.argname, 1);
157 }
158
159 static void
print_trailer(void)160 print_trailer(void)
161 {
162 f_print(fout, "\treturn (TRUE);\n");
163 f_print(fout, "}\n");
164 }
165
166
167 static void
print_ifopen(int indent,const char * name)168 print_ifopen(int indent, const char *name)
169 {
170 tabify(fout, indent);
171 f_print(fout, "if (!xdr_%s(xdrs", name);
172 }
173
174 static void
print_ifarg(const char * arg)175 print_ifarg(const char *arg)
176 {
177 f_print(fout, ", %s", arg);
178 }
179
180 static void
print_ifsizeof(int indent,const char * prefix,const char * type)181 print_ifsizeof(int indent, const char *prefix, const char *type)
182 {
183 if (indent) {
184 f_print(fout, ",\n");
185 tabify(fout, indent);
186 } else {
187 f_print(fout, ", ");
188 }
189 if (streq(type, "bool")) {
190 f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
191 } else {
192 f_print(fout, "sizeof (");
193 if (undefined(type) && prefix) {
194 f_print(fout, "%s ", prefix);
195 }
196 f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type);
197 }
198 }
199
200 static void
print_ifclose(int indent,int brace)201 print_ifclose(int indent, int brace)
202 {
203 f_print(fout, "))\n");
204 tabify(fout, indent);
205 f_print(fout, "\treturn (FALSE);\n");
206 if (brace)
207 f_print(fout, "\t}\n");
208 }
209
210 static void
print_ifstat(int indent,const char * prefix,const char * type,relation rel,const char * amax,const char * objname,const char * name)211 print_ifstat(int indent, const char *prefix, const char *type, relation rel,
212 const char *amax, const char *objname, const char *name)
213 {
214 const char *alt = NULL;
215 int brace = 0;
216
217 switch (rel) {
218 case REL_POINTER:
219 brace = 1;
220 f_print(fout, "\t{\n");
221 f_print(fout, "\t%s **pp = %s;\n", type, objname);
222 print_ifopen(indent, "pointer");
223 print_ifarg("(char **)");
224 f_print(fout, "pp");
225 print_ifsizeof(0, prefix, type);
226 break;
227 case REL_VECTOR:
228 if (streq(type, "string")) {
229 alt = "string";
230 } else if (streq(type, "opaque")) {
231 alt = "opaque";
232 }
233 if (alt) {
234 print_ifopen(indent, alt);
235 print_ifarg(objname);
236 } else {
237 print_ifopen(indent, "vector");
238 print_ifarg("(char *)");
239 f_print(fout, "%s", objname);
240 }
241 print_ifarg(amax);
242 if (!alt) {
243 print_ifsizeof(indent + 1, prefix, type);
244 }
245 break;
246 case REL_ARRAY:
247 if (streq(type, "string")) {
248 alt = "string";
249 } else if (streq(type, "opaque")) {
250 alt = "bytes";
251 }
252 if (streq(type, "string")) {
253 print_ifopen(indent, alt);
254 print_ifarg(objname);
255 } else {
256 if (alt) {
257 print_ifopen(indent, alt);
258 } else {
259 print_ifopen(indent, "array");
260 }
261 print_ifarg("(char **)");
262 if (*objname == '&') {
263 f_print(fout, "%s.%s_val, (u_int *) %s.%s_len",
264 objname, name, objname, name);
265 } else {
266 f_print(fout,
267 "&%s->%s_val, (u_int *) &%s->%s_len",
268 objname, name, objname, name);
269 }
270 }
271 print_ifarg(amax);
272 if (!alt) {
273 print_ifsizeof(indent + 1, prefix, type);
274 }
275 break;
276 case REL_ALIAS:
277 print_ifopen(indent, type);
278 print_ifarg(objname);
279 break;
280 }
281 print_ifclose(indent, brace);
282 }
283
284 /* ARGSUSED */
285 static void
emit_enum(definition * def __unused)286 emit_enum(definition *def __unused)
287 {
288 print_ifopen(1, "enum");
289 print_ifarg("(enum_t *)objp");
290 print_ifclose(1, 0);
291 }
292
293 static void
emit_program(definition * def)294 emit_program(definition *def)
295 {
296 decl_list *dl;
297 version_list *vlist;
298 proc_list *plist;
299
300 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
301 for (plist = vlist->procs; plist != NULL; plist = plist->next) {
302 if (!newstyle || plist->arg_num < 2)
303 continue; /* old style, or single argument */
304 print_prog_header(plist);
305 for (dl = plist->args.decls; dl != NULL;
306 dl = dl->next)
307 print_stat(1, &dl->decl);
308 print_trailer();
309 }
310 }
311
312
313 static void
emit_union(definition * def)314 emit_union(definition *def)
315 {
316 declaration *dflt;
317 case_list *cl;
318 declaration *cs;
319 char *object;
320 const char *vecformat = "objp->%s_u.%s";
321 const char *format = "&objp->%s_u.%s";
322
323 print_stat(1, &def->def.un.enum_decl);
324 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
325 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) {
326
327 f_print(fout, "\tcase %s:\n", cl->case_name);
328 if (cl->contflag == 1) /* a continued case statement */
329 continue;
330 cs = &cl->case_decl;
331 if (!streq(cs->type, "void")) {
332 object = xmalloc(strlen(def->def_name) +
333 strlen(format) + strlen(cs->name) + 1);
334 if (isvectordef (cs->type, cs->rel)) {
335 s_print(object, vecformat, def->def_name,
336 cs->name);
337 } else {
338 s_print(object, format, def->def_name,
339 cs->name);
340 }
341 print_ifstat(2, cs->prefix, cs->type, cs->rel,
342 cs->array_max, object, cs->name);
343 free(object);
344 }
345 f_print(fout, "\t\tbreak;\n");
346 }
347 dflt = def->def.un.default_decl;
348 if (dflt != NULL) {
349 if (!streq(dflt->type, "void")) {
350 f_print(fout, "\tdefault:\n");
351 object = xmalloc(strlen(def->def_name) +
352 strlen(format) + strlen(dflt->name) + 1);
353 if (isvectordef (dflt->type, dflt->rel)) {
354 s_print(object, vecformat, def->def_name,
355 dflt->name);
356 } else {
357 s_print(object, format, def->def_name,
358 dflt->name);
359 }
360
361 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel,
362 dflt->array_max, object, dflt->name);
363 free(object);
364 f_print(fout, "\t\tbreak;\n");
365 } else {
366 f_print(fout, "\tdefault:\n");
367 f_print(fout, "\t\tbreak;\n");
368 }
369 } else {
370 f_print(fout, "\tdefault:\n");
371 f_print(fout, "\t\treturn (FALSE);\n");
372 }
373
374 f_print(fout, "\t}\n");
375 }
376
377 static void
inline_struct(definition * def,int flag)378 inline_struct(definition *def, int flag)
379 {
380 decl_list *dl;
381 int i, size;
382 decl_list *cur, *psav;
383 bas_type *ptr;
384 char *sizestr;
385 const char *plus;
386 char ptemp[256];
387 int indent = 1;
388
389 cur = NULL;
390 if (flag == PUT)
391 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
392 else
393 f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
394
395 i = 0;
396 size = 0;
397 sizestr = NULL;
398 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */
399 /* now walk down the list and check for basic types */
400 if ((dl->decl.prefix == NULL) &&
401 ((ptr = find_type(dl->decl.type)) != NULL) &&
402 ((dl->decl.rel == REL_ALIAS) ||
403 (dl->decl.rel == REL_VECTOR))){
404 if (i == 0)
405 cur = dl;
406 i++;
407
408 if (dl->decl.rel == REL_ALIAS)
409 size += ptr->length;
410 else {
411 /* this code is required to handle arrays */
412 if (sizestr == NULL)
413 plus = "";
414 else
415 plus = " + ";
416
417 if (ptr->length != 1)
418 s_print(ptemp, "%s%s * %d",
419 plus, dl->decl.array_max,
420 ptr->length);
421 else
422 s_print(ptemp, "%s%s", plus,
423 dl->decl.array_max);
424
425 /* now concatenate to sizestr !!!! */
426 if (sizestr == NULL) {
427 sizestr = xstrdup(ptemp);
428 }
429 else{
430 sizestr = xrealloc(sizestr,
431 strlen(sizestr)
432 +strlen(ptemp)+1);
433 sizestr = strcat(sizestr, ptemp);
434 /* build up length of array */
435 }
436 }
437 } else {
438 if (i > 0) {
439 if (sizestr == NULL && size < inline_size){
440 /*
441 * don't expand into inline code
442 * if size < inline_size
443 */
444 while (cur != dl){
445 print_stat(indent + 1, &cur->decl);
446 cur = cur->next;
447 }
448 } else {
449 /* were already looking at a xdr_inlineable structure */
450 tabify(fout, indent + 1);
451 if (sizestr == NULL)
452 f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);",
453 size);
454 else {
455 if (size == 0)
456 f_print(fout,
457 "buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);",
458 sizestr);
459 else
460 f_print(fout,
461 "buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
462 size, sizestr);
463
464 }
465 f_print(fout, "\n");
466 tabify(fout, indent + 1);
467 f_print(fout,
468 "if (buf == NULL) {\n");
469
470 psav = cur;
471 while (cur != dl){
472 print_stat(indent + 2, &cur->decl);
473 cur = cur->next;
474 }
475
476 f_print(fout, "\n\t\t} else {\n");
477
478 cur = psav;
479 while (cur != dl){
480 emit_inline(indent + 2, &cur->decl, flag);
481 cur = cur->next;
482 }
483
484 tabify(fout, indent + 1);
485 f_print(fout, "}\n");
486 }
487 }
488 size = 0;
489 i = 0;
490 free(sizestr);
491 sizestr = NULL;
492 print_stat(indent + 1, &dl->decl);
493 }
494 }
495
496 if (i > 0) {
497 if (sizestr == NULL && size < inline_size){
498 /* don't expand into inline code if size < inline_size */
499 while (cur != dl){
500 print_stat(indent + 1, &cur->decl);
501 cur = cur->next;
502 }
503 } else {
504 /* were already looking at a xdr_inlineable structure */
505 if (sizestr == NULL)
506 f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);",
507 size);
508 else
509 if (size == 0)
510 f_print(fout,
511 "\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);",
512 sizestr);
513 else
514 f_print(fout,
515 "\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
516 size, sizestr);
517
518 f_print(fout, "\n\t\tif (buf == NULL) {\n");
519 psav = cur;
520 while (cur != NULL){
521 print_stat(indent + 2, &cur->decl);
522 cur = cur->next;
523 }
524 f_print(fout, "\t\t} else {\n");
525
526 cur = psav;
527 while (cur != dl){
528 emit_inline(indent + 2, &cur->decl, flag);
529 cur = cur->next;
530 }
531 f_print(fout, "\t\t}\n");
532 }
533 }
534 }
535
536 static void
emit_struct(definition * def)537 emit_struct(definition *def)
538 {
539 decl_list *dl;
540 int j, size, flag;
541 bas_type *ptr;
542 int can_inline;
543
544 if (inline_size == 0) {
545 /* No xdr_inlining at all */
546 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
547 print_stat(1, &dl->decl);
548 return;
549 }
550
551 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
552 if (dl->decl.rel == REL_VECTOR &&
553 strcmp(dl->decl.type, "opaque") != 0){
554 f_print(fout, "\tint i;\n");
555 break;
556 }
557
558 size = 0;
559 can_inline = 0;
560 /*
561 * Make a first pass and see if inling is possible.
562 */
563 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
564 if ((dl->decl.prefix == NULL) &&
565 ((ptr = find_type(dl->decl.type)) != NULL) &&
566 ((dl->decl.rel == REL_ALIAS)||
567 (dl->decl.rel == REL_VECTOR))){
568 if (dl->decl.rel == REL_ALIAS)
569 size += ptr->length;
570 else {
571 can_inline = 1;
572 break; /* can be inlined */
573 }
574 } else {
575 if (size >= inline_size){
576 can_inline = 1;
577 break; /* can be inlined */
578 }
579 size = 0;
580 }
581 if (size >= inline_size)
582 can_inline = 1;
583
584 if (can_inline == 0){ /* can not inline, drop back to old mode */
585 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
586 print_stat(1, &dl->decl);
587 return;
588 }
589
590 flag = PUT;
591 for (j = 0; j < 2; j++){
592 inline_struct(def, flag);
593 if (flag == PUT)
594 flag = GET;
595 }
596
597 f_print(fout, "\t\treturn (TRUE);\n\t}\n\n");
598
599 /* now take care of XDR_FREE case */
600
601 for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
602 print_stat(1, &dl->decl);
603
604 }
605
606 static void
emit_typedef(definition * def)607 emit_typedef(definition *def)
608 {
609 const char *prefix = def->def.ty.old_prefix;
610 const char *type = def->def.ty.old_type;
611 const char *amax = def->def.ty.array_max;
612 relation rel = def->def.ty.rel;
613
614 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name);
615 }
616
617 static void
print_stat(int indent,declaration * dec)618 print_stat(int indent, declaration *dec)
619 {
620 const char *prefix = dec->prefix;
621 const char *type = dec->type;
622 const char *amax = dec->array_max;
623 relation rel = dec->rel;
624 char name[256];
625
626 if (isvectordef(type, rel)) {
627 s_print(name, "objp->%s", dec->name);
628 } else {
629 s_print(name, "&objp->%s", dec->name);
630 }
631 print_ifstat(indent, prefix, type, rel, amax, name, dec->name);
632 }
633
634
635 char *upcase(const char *);
636
637 static void
emit_inline(int indent,declaration * decl,int flag)638 emit_inline(int indent, declaration *decl, int flag)
639 {
640 switch (decl->rel) {
641 case REL_ALIAS :
642 emit_single_in_line(indent, decl, flag, REL_ALIAS);
643 break;
644 case REL_VECTOR :
645 tabify(fout, indent);
646 f_print(fout, "{\n");
647 tabify(fout, indent + 1);
648 f_print(fout, "%s *genp;\n\n", decl->type);
649 tabify(fout, indent + 1);
650 f_print(fout,
651 "for (i = 0, genp = objp->%s;\n", decl->name);
652 tabify(fout, indent + 2);
653 f_print(fout, "i < %s; i++) {\n", decl->array_max);
654 emit_single_in_line(indent + 2, decl, flag, REL_VECTOR);
655 tabify(fout, indent + 1);
656 f_print(fout, "}\n");
657 tabify(fout, indent);
658 f_print(fout, "}\n");
659 break;
660 default:
661 break;
662 }
663 }
664
665 static void
emit_single_in_line(int indent,declaration * decl,int flag,relation rel)666 emit_single_in_line(int indent, declaration *decl, int flag, relation rel)
667 {
668 char *upp_case;
669
670 tabify(fout, indent);
671 if (flag == PUT)
672 f_print(fout, "IXDR_PUT_");
673 else
674 if (rel == REL_ALIAS)
675 f_print(fout, "objp->%s = IXDR_GET_", decl->name);
676 else
677 f_print(fout, "*genp++ = IXDR_GET_");
678
679 upp_case = upcase(decl->type);
680
681 /* hack - XX */
682 if (strcmp(upp_case, "INT") == 0)
683 {
684 free(upp_case);
685 upp_case = strdup("LONG");
686 }
687
688 if (strcmp(upp_case, "U_INT") == 0)
689 {
690 free(upp_case);
691 upp_case = strdup("U_LONG");
692 }
693 if (flag == PUT)
694 if (rel == REL_ALIAS)
695 f_print(fout,
696 "%s(buf, objp->%s);\n", upp_case, decl->name);
697 else
698 f_print(fout, "%s(buf, *genp++);\n", upp_case);
699
700 else
701 f_print(fout, "%s(buf);\n", upp_case);
702 free(upp_case);
703 }
704
705 char *
upcase(const char * str)706 upcase(const char *str)
707 {
708 char *ptr, *hptr;
709
710 ptr = (char *)xmalloc(strlen(str)+1);
711
712 hptr = ptr;
713 while (*str != '\0')
714 *ptr++ = toupper(*str++);
715
716 *ptr = '\0';
717 return (hptr);
718 }
719