rpc_hout.c revision 100441 
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#ident	"@(#)rpc_hout.c	1.16	94/04/25 SMI"
31
32#if 0
33#ifndef lint
34static char sccsid[] = "@(#)rpc_hout.c 1.12 89/02/22 (C) 1987 SMI";
35#endif
36#endif
37
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/usr.bin/rpcgen/rpc_hout.c 100441 2002-07-21 12:55:04Z charnier $");
40
41/*
42 * rpc_hout.c, Header file outputter for the RPC protocol compiler
43 * Copyright (C) 1987, Sun Microsystems, Inc.
44 */
45#include <stdio.h>
46#include <ctype.h>
47#include "rpc_parse.h"
48#include "rpc_util.h"
49
50void storexdrfuncdecl( char *, int );
51static void pconstdef( definition * );
52static void pstructdef( definition * );
53static void puniondef( definition * );
54static void pprogramdef( definition * );
55static void pstructdef( definition * );
56static void penumdef( definition * );
57static void ptypedef( definition * );
58static void pdefine( char *, char * );
59static int undefined2( char *, char * );
60static void parglist( proc_list *, char * );
61static void pprocdef( proc_list *, version_list *, char *, int, int );
62void pdeclaration( char *, declaration *, int, char * );
63
64/*
65 * Print the C-version of an xdr definition
66 */
67void
68print_datadef(def)
69	definition *def;
70{
71
72	if (def->def_kind == DEF_PROGRAM)  /* handle data only */
73		return;
74
75	if (def->def_kind != DEF_CONST) {
76		f_print(fout, "\n");
77	}
78	switch (def->def_kind) {
79	case DEF_STRUCT:
80		pstructdef(def);
81		break;
82	case DEF_UNION:
83		puniondef(def);
84		break;
85	case DEF_ENUM:
86		penumdef(def);
87		break;
88	case DEF_TYPEDEF:
89		ptypedef(def);
90		break;
91	case DEF_PROGRAM:
92		pprogramdef(def);
93		break;
94	case DEF_CONST:
95		pconstdef(def);
96		break;
97	}
98	if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
99	    storexdrfuncdecl(def->def_name,
100			     def->def_kind != DEF_TYPEDEF ||
101			     !isvectordef(def->def.ty.old_type,
102					  def->def.ty.rel));
103	}
104}
105
106
107void
108print_funcdef(def)
109	definition *def;
110{
111	switch (def->def_kind) {
112	case DEF_PROGRAM:
113		f_print(fout, "\n");
114		pprogramdef(def);
115		break;
116	default:
117		break;
118	}
119}
120
121/* store away enough information to allow the XDR functions to be spat
122    out at the end of the file */
123
124void
125storexdrfuncdecl(name, pointerp)
126char *name;
127int pointerp;
128{
129	xdrfunc * xdrptr;
130
131	xdrptr = XALLOC(struct xdrfunc);
132
133	xdrptr->name = name;
134	xdrptr->pointerp = pointerp;
135	xdrptr->next = NULL;
136
137	if (xdrfunc_tail == NULL){
138		xdrfunc_head = xdrptr;
139		xdrfunc_tail = xdrptr;
140	} else {
141		xdrfunc_tail->next = xdrptr;
142		xdrfunc_tail = xdrptr;
143	}
144
145
146}
147
148void
149print_xdr_func_def(name, pointerp, i)
150char* name;
151int pointerp;
152int i;
153{
154	if (i == 2) {
155		f_print(fout, "extern bool_t xdr_%s();\n", name);
156		return;
157	}
158	else
159		f_print(fout, "extern  bool_t xdr_%s(XDR *, %s%s);\n", name,
160			name, pointerp ? "*" : "");
161
162
163}
164
165
166static void
167pconstdef(def)
168	definition *def;
169{
170	pdefine(def->def_name, def->def.co);
171}
172
173/* print out the definitions for the arguments of functions in the
174    header file
175*/
176static void
177pargdef(def)
178	definition *def;
179{
180	decl_list *l;
181	version_list *vers;
182	char *name;
183	proc_list *plist;
184
185
186	for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
187			for (plist = vers->procs; plist != NULL;
188			    plist = plist->next) {
189
190				if (!newstyle || plist->arg_num < 2) {
191					continue; /* old style or single args */
192				}
193				name = plist->args.argname;
194				f_print(fout, "struct %s {\n", name);
195				for (l = plist->args.decls;
196				    l != NULL; l = l->next) {
197					pdeclaration(name, &l->decl, 1,
198						     ";\n");
199				}
200				f_print(fout, "};\n");
201				f_print(fout, "typedef struct %s %s;\n",
202					name, name);
203				storexdrfuncdecl(name, 1);
204				f_print(fout, "\n");
205			}
206		}
207}
208
209
210static void
211pstructdef(def)
212	definition *def;
213{
214	decl_list *l;
215	char *name = def->def_name;
216
217	f_print(fout, "struct %s {\n", name);
218	for (l = def->def.st.decls; l != NULL; l = l->next) {
219		pdeclaration(name, &l->decl, 1, ";\n");
220	}
221	f_print(fout, "};\n");
222	f_print(fout, "typedef struct %s %s;\n", name, name);
223}
224
225static void
226puniondef(def)
227	definition *def;
228{
229	case_list *l;
230	char *name = def->def_name;
231	declaration *decl;
232
233	f_print(fout, "struct %s {\n", name);
234	decl = &def->def.un.enum_decl;
235	if (streq(decl->type, "bool")) {
236		f_print(fout, "\tbool_t %s;\n", decl->name);
237	} else {
238		f_print(fout, "\t%s %s;\n", decl->type, decl->name);
239	}
240	f_print(fout, "\tunion {\n");
241	for (l = def->def.un.cases; l != NULL; l = l->next) {
242	    if (l->contflag == 0)
243		pdeclaration(name, &l->case_decl, 2, ";\n");
244	}
245	decl = def->def.un.default_decl;
246	if (decl && !streq(decl->type, "void")) {
247		pdeclaration(name, decl, 2, ";\n");
248	}
249	f_print(fout, "\t} %s_u;\n", name);
250	f_print(fout, "};\n");
251	f_print(fout, "typedef struct %s %s;\n", name, name);
252}
253
254static void
255pdefine(name, num)
256	char *name;
257	char *num;
258{
259	f_print(fout, "#define\t%s %s\n", name, num);
260}
261
262static void
263puldefine(name, num)
264	char *name;
265	char *num;
266{
267	f_print(fout, "#define\t%s ((unsigned long)(%s))\n", name, num);
268}
269
270static int
271define_printed(stop, start)
272	proc_list *stop;
273	version_list *start;
274{
275	version_list *vers;
276	proc_list *proc;
277
278	for (vers = start; vers != NULL; vers = vers->next) {
279		for (proc = vers->procs; proc != NULL; proc = proc->next) {
280			if (proc == stop) {
281				return (0);
282			} else if (streq(proc->proc_name, stop->proc_name)) {
283				return (1);
284			}
285		}
286	}
287	abort();
288	/* NOTREACHED */
289}
290
291static void
292pfreeprocdef(char * name, char *vers, int mode)
293{
294	f_print(fout, "extern int ");
295	pvname(name, vers);
296	if (mode == 1)
297		f_print(fout,"_freeresult(SVCXPRT *, xdrproc_t, caddr_t);\n");
298	else
299		f_print(fout,"_freeresult();\n");
300
301
302}
303
304static void
305pdispatch(char * name, char *vers, int mode)
306{
307
308	f_print(fout, "void ");
309	pvname(name, vers);
310	if (mode == 1)
311		f_print(fout,
312		    "(struct svc_req *rqstp, register SVCXPRT *transp);\n");
313	else
314		f_print(fout,"();\n");
315
316}
317
318static void
319pprogramdef(def)
320	definition *def;
321{
322	version_list *vers;
323	proc_list *proc;
324	int i;
325	char *ext;
326
327	pargdef(def);
328
329	puldefine(def->def_name, def->def.pr.prog_num);
330	for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
331		if (tblflag) {
332			f_print(fout,
333				"extern struct rpcgen_table %s_%s_table[];\n",
334				locase(def->def_name), vers->vers_num);
335			f_print(fout,
336				"extern %s_%s_nproc;\n",
337				locase(def->def_name), vers->vers_num);
338		}
339		puldefine(vers->vers_name, vers->vers_num);
340
341		/*
342		 * Print out 2 definitions, one for ANSI-C, another for
343		 * old K & R C
344		 */
345
346		if(!Cflag){
347			ext = "extern  ";
348			f_print(fout, "%s", ext);
349			pdispatch(def->def_name, vers->vers_num, 2);
350			for (proc = vers->procs; proc != NULL;
351			     proc = proc->next) {
352				if (!define_printed(proc,
353						    def->def.pr.versions)) {
354					puldefine(proc->proc_name,
355						  proc->proc_num);
356				}
357				f_print(fout, "%s", ext);
358				pprocdef(proc, vers, NULL, 0, 2);
359
360				if (mtflag) {
361					f_print(fout, "%s", ext);
362					pprocdef(proc, vers, NULL, 1, 2);
363				}
364			}
365			pfreeprocdef(def->def_name, vers->vers_num, 2);
366
367		} else {
368			for (i = 1; i < 3; i++){
369				if (i == 1){
370					f_print(fout, "\n#if defined(__STDC__) || defined(__cplusplus)\n");
371					ext = "extern  ";
372				}else{
373					f_print(fout, "\n#else /* K&R C */\n");
374					ext = "extern  ";
375				}
376
377				f_print(fout, "%s", ext);
378				pdispatch(def->def_name, vers->vers_num, i);
379				for (proc = vers->procs; proc != NULL;
380				     proc = proc->next) {
381					if (!define_printed(proc,
382							    def->def.pr.versions)) {
383						puldefine(proc->proc_name,
384							  proc->proc_num);
385					}
386					f_print(fout, "%s", ext);
387					pprocdef(proc, vers, "CLIENT *", 0, i);
388					f_print(fout, "%s", ext);
389					pprocdef(proc, vers, "struct svc_req *", 1, i);
390				}
391			pfreeprocdef(def->def_name, vers->vers_num, i);
392			}
393			f_print(fout, "#endif /* K&R C */\n");
394		}
395	}
396}
397
398static void
399pprocdef(proc, vp, addargtype, server_p, mode)
400	proc_list *proc;
401	version_list *vp;
402	char* addargtype;
403	int server_p;
404	int mode;
405{
406	if (mtflag) {/* Print MT style stubs */
407		if (server_p)
408			f_print(fout, "bool_t ");
409		else
410			f_print(fout, "enum clnt_stat ");
411	} else {
412		ptype(proc->res_prefix, proc->res_type, 1);
413		f_print(fout, "* ");
414	}
415	if (server_p)
416		pvname_svc(proc->proc_name, vp->vers_num);
417	else
418		pvname(proc->proc_name, vp->vers_num);
419
420	/*
421	 *  mode  1 = ANSI-C, mode 2 = K&R C
422	 */
423	if ( mode == 1)
424		parglist(proc, addargtype);
425	else
426		f_print(fout, "();\n");
427}
428
429
430
431/* print out argument list of procedure */
432static void
433parglist(proc, addargtype)
434	proc_list *proc;
435    char* addargtype;
436{
437	decl_list *dl;
438
439	f_print(fout, "(");
440	if (proc->arg_num < 2 && newstyle &&
441	    streq(proc->args.decls->decl.type, "void")) {
442		/* 0 argument in new style:  do nothing*/
443	}
444	else {
445		for (dl = proc->args.decls; dl != NULL; dl = dl->next) {
446			ptype(dl->decl.prefix, dl->decl.type, 1);
447			if (!newstyle)
448				f_print(fout, "*");
449			/* old style passes by reference */
450			f_print(fout, ", ");
451		}
452	}
453
454	if (mtflag)  {
455		ptype(proc->res_prefix, proc->res_type, 1);
456		f_print(fout, "*, ");
457	}
458
459	f_print(fout, "%s);\n", addargtype);
460
461}
462
463static void
464penumdef(def)
465	definition *def;
466{
467	char *name = def->def_name;
468	enumval_list *l;
469	char *last = NULL;
470	int count = 0;
471
472	f_print(fout, "enum %s {\n", name);
473	for (l = def->def.en.vals; l != NULL; l = l->next) {
474		f_print(fout, "\t%s", l->name);
475		if (l->assignment) {
476			f_print(fout, " = %s", l->assignment);
477			last = l->assignment;
478			count = 1;
479		} else {
480			if (last == NULL) {
481				f_print(fout, " = %d", count++);
482			} else {
483				f_print(fout, " = %s + %d", last, count++);
484			}
485		}
486		if (l->next)
487			f_print(fout, ",\n");
488		else
489			f_print(fout, "\n");
490	}
491	f_print(fout, "};\n");
492	f_print(fout, "typedef enum %s %s;\n", name, name);
493}
494
495static void
496ptypedef(def)
497	definition *def;
498{
499	char *name = def->def_name;
500	char *old = def->def.ty.old_type;
501	char prefix[8];	/* enough to contain "struct ", including NUL */
502	relation rel = def->def.ty.rel;
503
504
505	if (!streq(name, old)) {
506		if (streq(old, "string")) {
507			old = "char";
508			rel = REL_POINTER;
509		} else if (streq(old, "opaque")) {
510			old = "char";
511		} else if (streq(old, "bool")) {
512			old = "bool_t";
513		}
514		if (undefined2(old, name) && def->def.ty.old_prefix) {
515			s_print(prefix, "%s ", def->def.ty.old_prefix);
516		} else {
517			prefix[0] = 0;
518		}
519		f_print(fout, "typedef ");
520		switch (rel) {
521		case REL_ARRAY:
522			f_print(fout, "struct {\n");
523			f_print(fout, "\tu_int %s_len;\n", name);
524			f_print(fout, "\t%s%s *%s_val;\n", prefix, old, name);
525			f_print(fout, "} %s", name);
526			break;
527		case REL_POINTER:
528			f_print(fout, "%s%s *%s", prefix, old, name);
529			break;
530		case REL_VECTOR:
531			f_print(fout, "%s%s %s[%s]", prefix, old, name,
532				def->def.ty.array_max);
533			break;
534		case REL_ALIAS:
535			f_print(fout, "%s%s %s", prefix, old, name);
536			break;
537		}
538		f_print(fout, ";\n");
539	}
540}
541
542void
543pdeclaration(name, dec, tab, separator)
544	char *name;
545	declaration *dec;
546	int tab;
547	char *separator;
548{
549	char buf[8];	/* enough to hold "struct ", include NUL */
550	char *prefix;
551	char *type;
552
553	if (streq(dec->type, "void")) {
554		return;
555	}
556	tabify(fout, tab);
557	if (streq(dec->type, name) && !dec->prefix) {
558		f_print(fout, "struct ");
559	}
560	if (streq(dec->type, "string")) {
561		f_print(fout, "char *%s", dec->name);
562	} else {
563		prefix = "";
564		if (streq(dec->type, "bool")) {
565			type = "bool_t";
566		} else if (streq(dec->type, "opaque")) {
567			type = "char";
568		} else {
569			if (dec->prefix) {
570				s_print(buf, "%s ", dec->prefix);
571				prefix = buf;
572			}
573			type = dec->type;
574		}
575		switch (dec->rel) {
576		case REL_ALIAS:
577			f_print(fout, "%s%s %s", prefix, type, dec->name);
578			break;
579		case REL_VECTOR:
580			f_print(fout, "%s%s %s[%s]", prefix, type, dec->name,
581				dec->array_max);
582			break;
583		case REL_POINTER:
584			f_print(fout, "%s%s *%s", prefix, type, dec->name);
585			break;
586		case REL_ARRAY:
587			f_print(fout, "struct {\n");
588			tabify(fout, tab);
589			f_print(fout, "\tu_int %s_len;\n", dec->name);
590			tabify(fout, tab);
591			f_print(fout,
592				"\t%s%s *%s_val;\n", prefix, type, dec->name);
593			tabify(fout, tab);
594			f_print(fout, "} %s", dec->name);
595			break;
596		}
597	}
598	f_print(fout, separator);
599}
600
601static int
602undefined2(type, stop)
603	char *type;
604	char *stop;
605{
606	list *l;
607	definition *def;
608
609	for (l = defined; l != NULL; l = l->next) {
610		def = (definition *) l->val;
611		if (def->def_kind != DEF_PROGRAM) {
612			if (streq(def->def_name, stop)) {
613				return (1);
614			} else if (streq(def->def_name, type)) {
615				return (0);
616			}
617		}
618	}
619	return (1);
620}
621