1 /* $OpenBSD: rpc_hout.c,v 1.22 2016/12/20 22:19:08 krw 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 <stdio.h>
39 #include <stdlib.h>
40 #include <ctype.h>
41 #include "rpc_parse.h"
42 #include "rpc_util.h"
43
44 static void pconstdef(definition *);
45 static void pargdef(definition *);
46 static void pstructdef(definition *);
47 static void puniondef(definition *);
48 static void pprogramdef(definition *);
49 static void penumdef(definition *);
50 static void ptypedef(definition *);
51 static void pdefine(char *, char *);
52 static void puldefine(char *, char *);
53 static int define_printed(proc_list *, version_list *);
54 static int undefined2(char *, char *);
55 static void parglist(proc_list *, char *);
56 void pxdrfuncdecl(char *, int);
57 void pprocdef(proc_list *, version_list *, char *, int, int);
58 void pdeclaration(char *, declaration *, int, char *);
59
60 /*
61 * Print the C-version of an xdr definition
62 */
63 void
print_datadef(def)64 print_datadef(def)
65 definition *def;
66 {
67
68 if (def->def_kind == DEF_PROGRAM) /* handle data only */
69 return;
70
71 if (def->def_kind != DEF_CONST)
72 fprintf(fout, "\n");
73 switch (def->def_kind) {
74 case DEF_STRUCT:
75 pstructdef(def);
76 break;
77 case DEF_UNION:
78 puniondef(def);
79 break;
80 case DEF_ENUM:
81 penumdef(def);
82 break;
83 case DEF_TYPEDEF:
84 ptypedef(def);
85 break;
86 case DEF_PROGRAM:
87 pprogramdef(def);
88 break;
89 case DEF_CONST:
90 pconstdef(def);
91 break;
92 default:
93 break;
94 }
95 if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
96 pxdrfuncdecl(def->def_name,
97 def->def_kind != DEF_TYPEDEF ||
98 !isvectordef(def->def.ty.old_type, def->def.ty.rel));
99 }
100 }
101
102
103 void
print_funcdef(def)104 print_funcdef(def)
105 definition *def;
106 {
107 switch (def->def_kind) {
108 case DEF_PROGRAM:
109 fprintf(fout, "\n");
110 pprogramdef(def);
111 break;
112 default:
113 break;
114 }
115 }
116
117 void
pxdrfuncdecl(name,pointerp)118 pxdrfuncdecl(name, pointerp)
119 char *name;
120 int pointerp;
121 {
122
123 fprintf(fout,"#ifdef __cplusplus\n");
124 fprintf(fout, "extern \"C\" bool_t xdr_%s(XDR *, %s %s);\n",
125 name, name, pointerp ? ("*") : "");
126 fprintf(fout,"#elif defined(__STDC__)\n");
127 fprintf(fout, "extern bool_t xdr_%s(XDR *, %s %s);\n",
128 name, name, pointerp ? ("*") : "");
129 fprintf(fout,"#else /* Old Style C */\n");
130 fprintf(fout, "bool_t xdr_%s();\n", name);
131 fprintf(fout,"#endif /* Old Style C */\n\n");
132 }
133
134
135 static void
pconstdef(def)136 pconstdef(def)
137 definition *def;
138 {
139 pdefine(def->def_name, def->def.co);
140 }
141
142 /*
143 * print out the definitions for the arguments of functions in the
144 * header file
145 */
146 static void
pargdef(def)147 pargdef(def)
148 definition *def;
149 {
150 decl_list *l;
151 version_list *vers;
152 char *name;
153 proc_list *plist;
154
155 for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
156 for (plist = vers->procs; plist != NULL;
157 plist = plist->next) {
158 if (!newstyle || plist->arg_num < 2) {
159 continue; /* old style or single args */
160 }
161 name = plist->args.argname;
162 fprintf(fout, "struct %s {\n", name);
163 for (l = plist->args.decls;
164 l != NULL; l = l->next) {
165 pdeclaration(name, &l->decl, 1, ";\n");
166 }
167 fprintf(fout, "};\n");
168 fprintf(fout, "typedef struct %s %s;\n", name, name);
169 pxdrfuncdecl(name, 0);
170 fprintf(fout, "\n");
171 }
172 }
173 }
174
175 static void
pstructdef(def)176 pstructdef(def)
177 definition *def;
178 {
179 char *name = def->def_name;
180 decl_list *l;
181
182 fprintf(fout, "struct %s {\n", name);
183 for (l = def->def.st.decls; l != NULL; l = l->next)
184 pdeclaration(name, &l->decl, 1, ";\n");
185 fprintf(fout, "};\n");
186 fprintf(fout, "typedef struct %s %s;\n", name, name);
187 }
188
189 static void
puniondef(def)190 puniondef(def)
191 definition *def;
192 {
193 case_list *l;
194 char *name = def->def_name;
195 declaration *decl;
196
197 fprintf(fout, "struct %s {\n", name);
198 decl = &def->def.un.enum_decl;
199 if (streq(decl->type, "bool")) {
200 fprintf(fout, "\tbool_t %s;\n", decl->name);
201 } else {
202 fprintf(fout, "\t%s %s;\n", decl->type, decl->name);
203 }
204 fprintf(fout, "\tunion {\n");
205 for (l = def->def.un.cases; l != NULL; l = l->next) {
206 if (l->contflag == 0)
207 pdeclaration(name, &l->case_decl, 2, ";\n");
208 }
209 decl = def->def.un.default_decl;
210 if (decl && !streq(decl->type, "void")) {
211 pdeclaration(name, decl, 2, ";\n");
212 }
213 fprintf(fout, "\t} %s_u;\n", name);
214 fprintf(fout, "};\n");
215 fprintf(fout, "typedef struct %s %s;\n", name, name);
216 }
217
218 static void
pdefine(name,num)219 pdefine(name, num)
220 char *name;
221 char *num;
222 {
223 fprintf(fout, "#define %s %s\n", name, num);
224 }
225
226 static void
puldefine(name,num)227 puldefine(name, num)
228 char *name;
229 char *num;
230 {
231 fprintf(fout, "#define %s ((u_long)%s)\n", name, num);
232 }
233
234 static int
define_printed(stop,start)235 define_printed(stop, start)
236 proc_list *stop;
237 version_list *start;
238 {
239 version_list *vers;
240 proc_list *proc;
241
242 for (vers = start; vers != NULL; vers = vers->next) {
243 for (proc = vers->procs; proc != NULL; proc = proc->next) {
244 if (proc == stop) {
245 return (0);
246 } else if (streq(proc->proc_name, stop->proc_name)) {
247 return (1);
248 }
249 }
250 }
251 abort();
252 /* NOTREACHED */
253 }
254
255 static void
pprogramdef(def)256 pprogramdef(def)
257 definition *def;
258 {
259 version_list *vers;
260 proc_list *proc;
261 int i;
262 char *ext;
263
264 pargdef(def);
265
266 puldefine(def->def_name, def->def.pr.prog_num);
267 for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
268 if (tblflag) {
269 fprintf(fout, "extern struct rpcgen_table %s_%s_table[];\n",
270 locase(def->def_name), vers->vers_num);
271 fprintf(fout, "extern %s_%s_nproc;\n",
272 locase(def->def_name), vers->vers_num);
273 }
274 puldefine(vers->vers_name, vers->vers_num);
275
276 /*
277 * Print out 3 definitions, one for ANSI-C, another for C++,
278 * a third for old style C
279 */
280 for (i=0; i<3; i++) {
281 if (i==0) {
282 fprintf(fout,"\n#ifdef __cplusplus\n");
283 ext = "extern \"C\" ";
284 } else if (i==1) {
285 fprintf(fout,"\n#elif defined(__STDC__)\n");
286 ext = "extern ";
287 } else {
288 fprintf(fout,"\n#else /* Old Style C */\n");
289 ext = "extern ";
290 }
291
292 for (proc = vers->procs; proc != NULL; proc = proc->next) {
293 if (!define_printed(proc, def->def.pr.versions))
294 puldefine(proc->proc_name, proc->proc_num);
295 fprintf(fout,"%s",ext);
296 pprocdef(proc, vers, "CLIENT *", 0,i);
297 fprintf(fout,"%s",ext);
298 pprocdef(proc, vers, "struct svc_req *", 1,i);
299 }
300 }
301 fprintf(fout,"#endif /* Old Style C */\n");
302 }
303 }
304
305 void
pprocdef(proc,vp,addargtype,server_p,mode)306 pprocdef(proc, vp, addargtype, server_p,mode)
307 proc_list *proc;
308 version_list *vp;
309 char *addargtype;
310 int server_p;
311 int mode;
312 {
313
314 ptype(proc->res_prefix, proc->res_type, 1);
315 fprintf(fout, "* ");
316 if (server_p)
317 pvname_svc(proc->proc_name, vp->vers_num);
318 else
319 pvname(proc->proc_name, vp->vers_num);
320
321 /*
322 * mode 0 == cplusplus, mode 1 = ANSI-C, mode 2 = old style C
323 */
324 if (mode == 0 || mode == 1)
325 parglist(proc, addargtype);
326 else
327 fprintf(fout, "();\n");
328 }
329
330 /* print out argument list of procedure */
331 static void
parglist(proc,addargtype)332 parglist(proc, addargtype)
333 proc_list *proc;
334 char *addargtype;
335 {
336 decl_list *dl;
337
338 fprintf(fout,"(");
339
340 if (proc->arg_num < 2 && newstyle &&
341 streq(proc->args.decls->decl.type, "void")) {
342 /* 0 argument in new style: do nothing */
343 } else {
344 for (dl = proc->args.decls; dl != NULL; dl = dl->next) {
345 ptype(dl->decl.prefix, dl->decl.type, 1);
346 if (!newstyle)
347 fprintf(fout, "*"); /* old style passes by reference */
348 fprintf(fout, ", ");
349 }
350 }
351 fprintf(fout, "%s);\n", addargtype);
352 }
353
354 static void
penumdef(def)355 penumdef(def)
356 definition *def;
357 {
358 char *name = def->def_name;
359 enumval_list *l;
360 char *last = NULL;
361 int count = 0;
362
363 fprintf(fout, "enum %s {\n", name);
364 for (l = def->def.en.vals; l != NULL; l = l->next) {
365 fprintf(fout, "\t%s", l->name);
366 if (l->assignment) {
367 fprintf(fout, " = %s", l->assignment);
368 last = l->assignment;
369 count = 1;
370 } else {
371 if (last == NULL) {
372 fprintf(fout, " = %d", count++);
373 } else {
374 fprintf(fout, " = %s + %d", last, count++);
375 }
376 }
377 if (l->next)
378 fprintf(fout, ",\n");
379 else
380 fprintf(fout, "\n");
381 }
382 fprintf(fout, "};\n");
383 fprintf(fout, "typedef enum %s %s;\n", name, name);
384 }
385
386 static void
ptypedef(def)387 ptypedef(def)
388 definition *def;
389 {
390 char *name = def->def_name;
391 char *old = def->def.ty.old_type;
392 char prefix[8]; /* enough to contain "struct ", including NUL */
393 relation rel = def->def.ty.rel;
394
395 if (!streq(name, old)) {
396 if (streq(old, "string")) {
397 old = "char";
398 rel = REL_POINTER;
399 } else if (streq(old, "opaque")) {
400 old = "char";
401 } else if (streq(old, "bool")) {
402 old = "bool_t";
403 }
404 if (undefined2(old, name) && def->def.ty.old_prefix) {
405 snprintf(prefix, sizeof prefix, "%s ", def->def.ty.old_prefix);
406 } else {
407 prefix[0] = 0;
408 }
409 fprintf(fout, "typedef ");
410 switch (rel) {
411 case REL_ARRAY:
412 fprintf(fout, "struct {\n");
413 fprintf(fout, "\tu_int %s_len;\n", name);
414 fprintf(fout, "\t%s%s *%s_val;\n", prefix, old, name);
415 fprintf(fout, "} %s", name);
416 break;
417 case REL_POINTER:
418 fprintf(fout, "%s%s *%s", prefix, old, name);
419 break;
420 case REL_VECTOR:
421 fprintf(fout, "%s%s %s[%s]", prefix, old, name,
422 def->def.ty.array_max);
423 break;
424 case REL_ALIAS:
425 fprintf(fout, "%s%s %s", prefix, old, name);
426 break;
427 }
428 fprintf(fout, ";\n");
429 }
430 }
431
432 void
pdeclaration(name,dec,tab,separator)433 pdeclaration(name, dec, tab, separator)
434 char *name;
435 declaration *dec;
436 int tab;
437 char *separator;
438 {
439 char buf[8]; /* enough to hold "struct ", include NUL */
440 char *prefix;
441 char *type;
442
443 if (streq(dec->type, "void"))
444 return;
445 tabify(fout, tab);
446 if (streq(dec->type, name) && !dec->prefix) {
447 fprintf(fout, "struct ");
448 }
449 if (streq(dec->type, "string")) {
450 fprintf(fout, "char *%s", dec->name);
451 } else {
452 prefix = "";
453 if (streq(dec->type, "bool")) {
454 type = "bool_t";
455 } else if (streq(dec->type, "opaque")) {
456 type = "char";
457 } else {
458 if (dec->prefix) {
459 snprintf(buf, sizeof buf, "%s ", dec->prefix);
460 prefix = buf;
461 }
462 type = dec->type;
463 }
464 switch (dec->rel) {
465 case REL_ALIAS:
466 fprintf(fout, "%s%s %s", prefix, type, dec->name);
467 break;
468 case REL_VECTOR:
469 fprintf(fout, "%s%s %s[%s]", prefix, type, dec->name,
470 dec->array_max);
471 break;
472 case REL_POINTER:
473 fprintf(fout, "%s%s *%s", prefix, type, dec->name);
474 break;
475 case REL_ARRAY:
476 fprintf(fout, "struct {\n");
477 tabify(fout, tab);
478 fprintf(fout, "\tu_int %s_len;\n", dec->name);
479 tabify(fout, tab);
480 fprintf(fout, "\t%s%s *%s_val;\n", prefix, type, dec->name);
481 tabify(fout, tab);
482 fprintf(fout, "} %s", dec->name);
483 break;
484 }
485 }
486 fprintf(fout, "%s", separator);
487 }
488
489 static int
undefined2(type,stop)490 undefined2(type, stop)
491 char *type;
492 char *stop;
493 {
494 list *l;
495 definition *def;
496
497 for (l = defined; l != NULL; l = l->next) {
498 def = (definition *) l->val;
499 if (def->def_kind != DEF_PROGRAM) {
500 if (streq(def->def_name, stop)) {
501 return (1);
502 } else if (streq(def->def_name, type)) {
503 return (0);
504 }
505 }
506 }
507 return (1);
508 }
509