1 /* $NetBSD: rpc_clntout.c,v 1.15 2013/12/15 00:40:17 christos Exp $ */
2 /*
3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
4 * unrestricted use provided that this legend is included on all tape
5 * media and as a part of the software program in whole or part. Users
6 * may copy or modify Sun RPC without charge, but are not authorized
7 * to license or distribute it to anyone else except as part of a product or
8 * program developed by the user or with the express written consent of
9 * Sun Microsystems, Inc.
10 *
11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 *
15 * Sun RPC is provided with no support and without any obligation on the
16 * part of Sun Microsystems, Inc. to assist in its use, correction,
17 * modification or enhancement.
18 *
19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
21 * OR ANY PART THEREOF.
22 *
23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24 * or profits or other special, indirect and consequential damages, even if
25 * Sun has been advised of the possibility of such damages.
26 *
27 * Sun Microsystems, Inc.
28 * 2550 Garcia Avenue
29 * Mountain View, California 94043
30 */
31
32 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #include <sys/cdefs.h>
37 #if defined(__RCSID) && !defined(lint)
38 #if 0
39 static char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI";
40 #else
41 __RCSID("$NetBSD: rpc_clntout.c,v 1.15 2013/12/15 00:40:17 christos Exp $");
42 #endif
43 #endif
44
45 /*
46 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
47 * Copyright (C) 1987, Sun Microsytsems, Inc.
48 */
49 #include <stdio.h>
50 #include <string.h>
51 #include <rpc/types.h>
52 #include "rpc_scan.h"
53 #include "rpc_parse.h"
54 #include "rpc_util.h"
55
56 static void write_program(definition *);
57 static const char *ampr(const char *);
58 static const char *aster(const char *);
59 static void printbody(proc_list *);
60
61 #define DEFAULT_TIMEOUT 25 /* in seconds */
62 static char RESULT[] = "clnt_res";
63
64
65 void
write_stubs(void)66 write_stubs(void)
67 {
68 list *l;
69 definition *def;
70
71 f_print(fout,
72 "\n/* Default timeout can be changed using clnt_control() */\n");
73 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
74 DEFAULT_TIMEOUT);
75 for (l = defined; l != NULL; l = l->next) {
76 def = (definition *) l->val;
77 if (def->def_kind == DEF_PROGRAM) {
78 write_program(def);
79 }
80 }
81 }
82
83 static void
write_program(definition * def)84 write_program(definition *def)
85 {
86 version_list *vp;
87 proc_list *proc;
88
89 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
90 for (proc = vp->procs; proc != NULL; proc = proc->next) {
91 f_print(fout, "\n");
92 if (Mflag)
93 f_print(fout, "enum clnt_stat\n");
94 else {
95 ptype(proc->res_prefix, proc->res_type, 1);
96 f_print(fout, "*\n");
97 }
98 pvname(proc->proc_name, vp->vers_num);
99 printarglist(proc, RESULT, "clnt", "CLIENT *");
100 f_print(fout, "{\n");
101 printbody(proc);
102 f_print(fout, "}\n");
103 }
104 }
105 }
106 /* Writes out declarations of procedure's argument list.
107 In either ANSI C style, in one of old rpcgen style (pass by reference),
108 or new rpcgen style (multiple arguments, pass by value);
109 */
110
111 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
112
113 void
printarglist(proc_list * proc,const char * result,const char * addargname,const char * addargtype)114 printarglist(proc_list *proc, const char *result,
115 const char *addargname, const char *addargtype)
116 {
117
118 decl_list *l;
119
120 if (!newstyle) { /* old style: always pass argument by
121 * reference */
122 f_print(fout, "(");
123 ptype(proc->args.decls->decl.prefix, proc->args.decls->decl.type, 1);
124 f_print(fout, "*argp, ");
125 if (Mflag) {
126 if (streq(proc->res_type, "void"))
127 f_print(fout, "char ");
128 else
129 ptype(proc->res_prefix, proc->res_type, 0);
130 f_print(fout, "%s%s, ", aster(proc->res_type),
131 result);
132 }
133 f_print(fout, "%s%s)\n", addargtype, addargname);
134 } else {
135 f_print(fout, "(");
136 if (!streq(proc->args.decls->decl.type, "void")) {
137 /* new style, 1 or multiple arguments */
138 for (l = proc->args.decls; l != NULL; l = l->next)
139 pdeclaration(proc->args.argname,
140 &l->decl, 0, ", ");
141 }
142 if (Mflag) {
143 if (streq(proc->res_type, "void"))
144 f_print(fout, "char ");
145 else
146 ptype(proc->res_prefix, proc->res_type, 0);
147 f_print(fout, "%s%s, ", aster(proc->res_type),
148 result);
149 }
150 f_print(fout, "%s%s)\n", addargtype, addargname);
151 }
152 }
153
154
155 static const char *
ampr(const char * type)156 ampr(const char *type)
157 {
158 if (isvectordef(type, REL_ALIAS)) {
159 return ("");
160 } else {
161 return ("&");
162 }
163 }
164
165 static const char *
aster(const char * type)166 aster(const char *type)
167 {
168 if (isvectordef(type, REL_ALIAS)) {
169 return ("");
170 } else {
171 return ("*");
172 }
173 }
174
175 static void
printbody(proc_list * proc)176 printbody(proc_list *proc)
177 {
178 decl_list *l;
179 bool_t args2 = (proc->arg_num > 1);
180
181 /* For new style with multiple arguments, need a structure in which to
182 * stuff the arguments. */
183 if (newstyle && args2) {
184 f_print(fout, "\t%s", proc->args.argname);
185 f_print(fout, " arg;\n");
186 }
187 if (!Mflag) {
188 f_print(fout, "\tstatic ");
189 if (streq(proc->res_type, "void"))
190 f_print(fout, "char ");
191 else
192 ptype(proc->res_prefix, proc->res_type, 0);
193 f_print(fout, "%s;\n", RESULT);
194 }
195 f_print(fout, "\n");
196 if (!Mflag)
197 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n",
198 ampr(proc->res_type), RESULT, RESULT);
199 if (newstyle && !args2 && (streq(proc->args.decls->decl.type, "void"))) {
200 /* newstyle, 0 arguments */
201 if (Mflag) {
202 f_print(fout, "\treturn (clnt_call(clnt, %s, xdr_void",
203 proc->proc_name);
204 f_print(fout, ", NULL, xdr_%s, %s, TIMEOUT));\n",
205 stringfix(proc->res_type), RESULT);
206 } else {
207 f_print(fout, "\tif (clnt_call(clnt, %s, xdr_void, ",
208 proc->proc_name);
209 f_print(fout,
210 "NULL, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS)\n",
211 stringfix(proc->res_type), ampr(proc->res_type),
212 RESULT);
213 }
214 } else {
215 if (newstyle && args2) {
216 /* newstyle, multiple arguments: stuff arguments into
217 * structure */
218 for (l = proc->args.decls; l != NULL; l = l->next) {
219 f_print(fout, "\targ.%s = %s;\n",
220 l->decl.name, l->decl.name);
221 }
222 if (Mflag) {
223 f_print(fout,
224 "\treturn (clnt_call(clnt, %s, xdr_%s, &arg, xdr_%s, %s, TIMEOUT));\n",
225 proc->proc_name, proc->args.argname,
226 stringfix(proc->res_type), RESULT);
227 } else {
228 f_print(fout,
229 "\tif (clnt_call(clnt, %s, xdr_%s, &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS)\n",
230 proc->proc_name, proc->args.argname,
231 stringfix(proc->res_type),
232 ampr(proc->res_type), RESULT);
233 }
234 } else { /* single argument, new or old style */
235 if (Mflag) {
236 f_print(fout,
237 "\treturn (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, %s, TIMEOUT));\n",
238 proc->proc_name,
239 stringfix(proc->args.decls->decl.type),
240 (newstyle ? "&" : ""),
241 (newstyle ? proc->args.decls->decl.name : "argp"),
242 stringfix(proc->res_type), RESULT);
243 } else {
244 f_print(fout,
245 "\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS)\n",
246 proc->proc_name,
247 stringfix(proc->args.decls->decl.type),
248 (newstyle ? "&" : ""),
249 (newstyle ? proc->args.decls->decl.name : "argp"),
250 stringfix(proc->res_type),
251 ampr(proc->res_type), RESULT);
252 }
253 }
254 }
255 if (!Mflag) {
256 f_print(fout, "\t\treturn (NULL);\n");
257 if (streq(proc->res_type, "void"))
258 f_print(fout, "\treturn ((void *)%s%s);\n",
259 ampr(proc->res_type), RESULT);
260 else
261 f_print(fout, "\treturn (%s%s);\n",
262 ampr(proc->res_type), RESULT);
263 }
264 }
265