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