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_hout.c	1.16	94/04/25 SMI"
33static char sccsid[] = "@(#)rpc_hout.c 1.12 89/02/22 (C) 1987 SMI";
34#endif
35#endif
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40/*
41 * rpc_hout.c, Header file outputter for the RPC protocol compiler
42 * Copyright (C) 1987, Sun Microsystems, Inc.
43 */
44#include <stdio.h>
45#include <ctype.h>
46#include "rpc_parse.h"
47#include "rpc_scan.h"
48#include "rpc_util.h"
49
50void storexdrfuncdecl(const char *, int );
51static void pconstdef( definition * );
52static void pstructdef( definition * );
53static void puniondef( definition * );
54static void pprogramdef( definition *, int );
55static void penumdef( definition * );
56static void ptypedef( definition * );
57static void pdefine(const char *, const char *);
58static int undefined2(const char *, const char *);
59static void parglist(proc_list *, const char *);
60static void pprocdef(proc_list *, version_list *, const char *, int);
61
62/*
63 * Print the C-version of an xdr definition
64 */
65void
66print_datadef(definition *def, int headeronly)
67{
68
69	if (def->def_kind == DEF_PROGRAM)  /* handle data only */
70		return;
71
72	if (def->def_kind != DEF_CONST) {
73		f_print(fout, "\n");
74	}
75	switch (def->def_kind) {
76	case DEF_STRUCT:
77		pstructdef(def);
78		break;
79	case DEF_UNION:
80		puniondef(def);
81		break;
82	case DEF_ENUM:
83		penumdef(def);
84		break;
85	case DEF_TYPEDEF:
86		ptypedef(def);
87		break;
88	case DEF_PROGRAM:
89		pprogramdef(def, headeronly);
90		break;
91	case DEF_CONST:
92		pconstdef(def);
93		break;
94	}
95	if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
96	    storexdrfuncdecl(def->def_name,
97			     def->def_kind != DEF_TYPEDEF ||
98			     !isvectordef(def->def.ty.old_type,
99					  def->def.ty.rel));
100	}
101}
102
103
104void
105print_funcdef(definition *def, int headeronly)
106{
107	switch (def->def_kind) {
108	case DEF_PROGRAM:
109		f_print(fout, "\n");
110		pprogramdef(def, headeronly);
111		break;
112	default:
113		break;
114	}
115}
116
117/* store away enough information to allow the XDR functions to be spat
118    out at the end of the file */
119
120void
121storexdrfuncdecl(const char *name, int pointerp)
122{
123	xdrfunc * xdrptr;
124
125	xdrptr = XALLOC(struct xdrfunc);
126
127	xdrptr->name = name;
128	xdrptr->pointerp = pointerp;
129	xdrptr->next = NULL;
130
131	if (xdrfunc_tail == NULL){
132		xdrfunc_head = xdrptr;
133		xdrfunc_tail = xdrptr;
134	} else {
135		xdrfunc_tail->next = xdrptr;
136		xdrfunc_tail = xdrptr;
137	}
138
139
140}
141
142void
143print_xdr_func_def(const char *name, int pointerp)
144{
145	f_print(fout, "extern  bool_t xdr_%s(XDR *, %s%s);\n", name,
146		name, pointerp ? "*" : "");
147}
148
149
150static void
151pconstdef(definition *def)
152{
153	pdefine(def->def_name, def->def.co);
154}
155
156/* print out the definitions for the arguments of functions in the
157    header file
158*/
159static void
160pargdef(definition *def)
161{
162	decl_list *l;
163	version_list *vers;
164	char *name;
165	proc_list *plist;
166
167
168	for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
169			for (plist = vers->procs; plist != NULL;
170			    plist = plist->next) {
171
172				if (!newstyle || plist->arg_num < 2) {
173					continue; /* old style or single args */
174				}
175				name = plist->args.argname;
176				f_print(fout, "struct %s {\n", name);
177				for (l = plist->args.decls;
178				    l != NULL; l = l->next) {
179					pdeclaration(name, &l->decl, 1,
180						     ";\n");
181				}
182				f_print(fout, "};\n");
183				f_print(fout, "typedef struct %s %s;\n",
184					name, name);
185				storexdrfuncdecl(name, 1);
186				f_print(fout, "\n");
187			}
188		}
189}
190
191
192static void
193pstructdef(definition *def)
194{
195	decl_list *l;
196	const char *name = def->def_name;
197
198	f_print(fout, "struct %s {\n", name);
199	for (l = def->def.st.decls; l != NULL; l = l->next) {
200		pdeclaration(name, &l->decl, 1, ";\n");
201	}
202	f_print(fout, "};\n");
203	f_print(fout, "typedef struct %s %s;\n", name, name);
204}
205
206static void
207puniondef(definition *def)
208{
209	case_list *l;
210	const char *name = def->def_name;
211	declaration *decl;
212
213	f_print(fout, "struct %s {\n", name);
214	decl = &def->def.un.enum_decl;
215	if (streq(decl->type, "bool")) {
216		f_print(fout, "\tbool_t %s;\n", decl->name);
217	} else {
218		f_print(fout, "\t%s %s;\n", decl->type, decl->name);
219	}
220	f_print(fout, "\tunion {\n");
221	for (l = def->def.un.cases; l != NULL; l = l->next) {
222	    if (l->contflag == 0)
223		pdeclaration(name, &l->case_decl, 2, ";\n");
224	}
225	decl = def->def.un.default_decl;
226	if (decl && !streq(decl->type, "void")) {
227		pdeclaration(name, decl, 2, ";\n");
228	}
229	f_print(fout, "\t} %s_u;\n", name);
230	f_print(fout, "};\n");
231	f_print(fout, "typedef struct %s %s;\n", name, name);
232}
233
234static void
235pdefine(const char *name, const char *num)
236{
237	f_print(fout, "#define\t%s %s\n", name, num);
238}
239
240static void
241puldefine(const char *name, const char *num)
242{
243	f_print(fout, "#define\t%s ((unsigned long)(%s))\n", name, num);
244}
245
246static int
247define_printed(proc_list *stop, version_list *start)
248{
249	version_list *vers;
250	proc_list *proc;
251
252	for (vers = start; vers != NULL; vers = vers->next) {
253		for (proc = vers->procs; proc != NULL; proc = proc->next) {
254			if (proc == stop) {
255				return (0);
256			} else if (streq(proc->proc_name, stop->proc_name)) {
257				return (1);
258			}
259		}
260	}
261	abort();
262	/* NOTREACHED */
263}
264
265static void
266pfreeprocdef(const char * name, const char *vers)
267{
268	f_print(fout, "extern int ");
269	pvname(name, vers);
270	f_print(fout, "_freeresult(SVCXPRT *, xdrproc_t, caddr_t);\n");
271}
272
273static void
274pdispatch(const char * name, const char *vers)
275{
276
277	f_print(fout, "void ");
278	pvname(name, vers);
279	f_print(fout, "(struct svc_req *rqstp, SVCXPRT *transp);\n");
280}
281
282static void
283pprogramdef(definition *def, int headeronly)
284{
285	version_list *vers;
286	proc_list *proc;
287	const char *ext;
288
289	pargdef(def);
290
291	puldefine(def->def_name, def->def.pr.prog_num);
292	for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
293		if (tblflag) {
294			f_print(fout,
295				"extern struct rpcgen_table %s_%s_table[];\n",
296				locase(def->def_name), vers->vers_num);
297			f_print(fout,
298				"extern %s_%s_nproc;\n",
299				locase(def->def_name), vers->vers_num);
300		}
301		puldefine(vers->vers_name, vers->vers_num);
302
303		f_print(fout, "\n");
304		ext = "extern  ";
305		if (headeronly) {
306			f_print(fout, "%s", ext);
307			pdispatch(def->def_name, vers->vers_num);
308		}
309		for (proc = vers->procs; proc != NULL; proc = proc->next) {
310			if (!define_printed(proc, def->def.pr.versions)) {
311				puldefine(proc->proc_name, proc->proc_num);
312			}
313			f_print(fout, "%s", ext);
314			pprocdef(proc, vers, "CLIENT *", 0);
315			f_print(fout, "%s", ext);
316			pprocdef(proc, vers, "struct svc_req *", 1);
317		}
318		pfreeprocdef(def->def_name, vers->vers_num);
319	}
320}
321
322static void
323pprocdef(proc_list *proc, version_list *vp, const char *addargtype, int server_p)
324{
325	if (mtflag) {/* Print MT style stubs */
326		if (server_p)
327			f_print(fout, "bool_t ");
328		else
329			f_print(fout, "enum clnt_stat ");
330	} else {
331		ptype(proc->res_prefix, proc->res_type, 1);
332		f_print(fout, "* ");
333	}
334	if (server_p)
335		pvname_svc(proc->proc_name, vp->vers_num);
336	else
337		pvname(proc->proc_name, vp->vers_num);
338
339	parglist(proc, addargtype);
340}
341
342
343
344/* print out argument list of procedure */
345static void
346parglist(proc_list *proc, const char *addargtype)
347{
348	decl_list *dl;
349
350	f_print(fout, "(");
351	if (proc->arg_num < 2 && newstyle &&
352	    streq(proc->args.decls->decl.type, "void")) {
353		/* 0 argument in new style:  do nothing*/
354	}
355	else {
356		for (dl = proc->args.decls; dl != NULL; dl = dl->next) {
357			ptype(dl->decl.prefix, dl->decl.type, 1);
358			if (!newstyle)
359				f_print(fout, "*");
360			/* old style passes by reference */
361			f_print(fout, ", ");
362		}
363	}
364
365	if (mtflag)  {
366		ptype(proc->res_prefix, proc->res_type, 1);
367		f_print(fout, "*, ");
368	}
369
370	f_print(fout, "%s);\n", addargtype);
371
372}
373
374static void
375penumdef(definition *def)
376{
377	const char *name = def->def_name;
378	enumval_list *l;
379	const char *last = NULL;
380	int count = 0;
381
382	f_print(fout, "enum %s {\n", name);
383	for (l = def->def.en.vals; l != NULL; l = l->next) {
384		f_print(fout, "\t%s", l->name);
385		if (l->assignment) {
386			f_print(fout, " = %s", l->assignment);
387			last = l->assignment;
388			count = 1;
389		} else {
390			if (last == NULL) {
391				f_print(fout, " = %d", count++);
392			} else {
393				f_print(fout, " = %s + %d", last, count++);
394			}
395		}
396		if (l->next)
397			f_print(fout, ",\n");
398		else
399			f_print(fout, "\n");
400	}
401	f_print(fout, "};\n");
402	f_print(fout, "typedef enum %s %s;\n", name, name);
403}
404
405static void
406ptypedef(definition *def)
407{
408	const char *name = def->def_name;
409	const char *old = def->def.ty.old_type;
410	char prefix[8];	/* enough to contain "struct ", including NUL */
411	relation rel = def->def.ty.rel;
412
413
414	if (!streq(name, old)) {
415		if (streq(old, "string")) {
416			old = "char";
417			rel = REL_POINTER;
418		} else if (streq(old, "opaque")) {
419			old = "char";
420		} else if (streq(old, "bool")) {
421			old = "bool_t";
422		}
423		if (undefined2(old, name) && def->def.ty.old_prefix) {
424			s_print(prefix, "%s ", def->def.ty.old_prefix);
425		} else {
426			prefix[0] = 0;
427		}
428		f_print(fout, "typedef ");
429		switch (rel) {
430		case REL_ARRAY:
431			f_print(fout, "struct {\n");
432			f_print(fout, "\tu_int %s_len;\n", name);
433			f_print(fout, "\t%s%s *%s_val;\n", prefix, old, name);
434			f_print(fout, "} %s", name);
435			break;
436		case REL_POINTER:
437			f_print(fout, "%s%s *%s", prefix, old, name);
438			break;
439		case REL_VECTOR:
440			f_print(fout, "%s%s %s[%s]", prefix, old, name,
441				def->def.ty.array_max);
442			break;
443		case REL_ALIAS:
444			f_print(fout, "%s%s %s", prefix, old, name);
445			break;
446		}
447		f_print(fout, ";\n");
448	}
449}
450
451void
452pdeclaration(const char *name, declaration *dec, int tab, const char *separator)
453{
454	char buf[8];	/* enough to hold "struct ", include NUL */
455	const char *prefix;
456	const char *type;
457
458	if (streq(dec->type, "void")) {
459		return;
460	}
461	tabify(fout, tab);
462	if (streq(dec->type, name) && !dec->prefix) {
463		f_print(fout, "struct ");
464	}
465	if (streq(dec->type, "string")) {
466		f_print(fout, "char *%s", dec->name);
467	} else {
468		prefix = "";
469		if (streq(dec->type, "bool")) {
470			type = "bool_t";
471		} else if (streq(dec->type, "opaque")) {
472			type = "char";
473		} else {
474			if (dec->prefix) {
475				s_print(buf, "%s ", dec->prefix);
476				prefix = buf;
477			}
478			type = dec->type;
479		}
480		switch (dec->rel) {
481		case REL_ALIAS:
482			f_print(fout, "%s%s %s", prefix, type, dec->name);
483			break;
484		case REL_VECTOR:
485			f_print(fout, "%s%s %s[%s]", prefix, type, dec->name,
486				dec->array_max);
487			break;
488		case REL_POINTER:
489			f_print(fout, "%s%s *%s", prefix, type, dec->name);
490			break;
491		case REL_ARRAY:
492			f_print(fout, "struct {\n");
493			tabify(fout, tab);
494			f_print(fout, "\tu_int %s_len;\n", dec->name);
495			tabify(fout, tab);
496			f_print(fout,
497				"\t%s%s *%s_val;\n", prefix, type, dec->name);
498			tabify(fout, tab);
499			f_print(fout, "} %s", dec->name);
500			break;
501		}
502	}
503	fputs(separator, fout);
504}
505
506static int
507undefined2(const char *type, const char *stop)
508{
509	list *l;
510	definition *def;
511
512	for (l = defined; l != NULL; l = l->next) {
513		def = (definition *) l->val;
514		if (def->def_kind != DEF_PROGRAM) {
515			if (streq(def->def_name, stop)) {
516				return (1);
517			} else if (streq(def->def_name, type)) {
518				return (0);
519			}
520		}
521	}
522	return (1);
523}
524