1 /* $OpenBSD: rpc_clntout.c,v 1.12 2003/07/09 03:35:21 deraadt Exp $ */
2 /* $NetBSD: rpc_clntout.c,v 1.4 1995/06/11 21:49:52 pk Exp $ */
3 /*
4 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
5 * unrestricted use provided that this legend is included on all tape
6 * media and as a part of the software program in whole or part. Users
7 * may copy or modify Sun RPC without charge, but are not authorized
8 * to license or distribute it to anyone else except as part of a product or
9 * program developed by the user or with the express written consent of
10 * Sun Microsystems, Inc.
11 *
12 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
13 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
14 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
15 *
16 * Sun RPC is provided with no support and without any obligation on the
17 * part of Sun Microsystems, Inc. to assist in its use, correction,
18 * modification or enhancement.
19 *
20 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
21 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
22 * OR ANY PART THEREOF.
23 *
24 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
25 * or profits or other special, indirect and consequential damages, even if
26 * Sun has been advised of the possibility of such damages.
27 *
28 * Sun Microsystems, Inc.
29 * 2550 Garcia Avenue
30 * Mountain View, California 94043
31 */
32
33 #ifndef lint
34 static char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI";
35 #endif
36
37 /*
38 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
39 * Copyright (C) 1987, Sun Microsytsems, Inc.
40 */
41 #include <stdio.h>
42 #include <string.h>
43 #include <rpc/types.h>
44 #include "rpc_parse.h"
45 #include "rpc_util.h"
46
47 static void write_program(definition *);
48 static void printbody(proc_list *);
49
50 #define DEFAULT_TIMEOUT 25 /* in seconds */
51 static char RESULT[] = "clnt_res";
52
53
54 void
write_stubs()55 write_stubs()
56 {
57 list *l;
58 definition *def;
59
60 fprintf(fout,
61 "\n/* Default timeout can be changed using clnt_control() */\n");
62 fprintf(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
63 DEFAULT_TIMEOUT);
64 for (l = defined; l != NULL; l = l->next) {
65 def = (definition *) l->val;
66 if (def->def_kind == DEF_PROGRAM) {
67 write_program(def);
68 }
69 }
70 }
71
72 static void
write_program(def)73 write_program(def)
74 definition *def;
75 {
76 version_list *vp;
77 proc_list *proc;
78
79 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
80 for (proc = vp->procs; proc != NULL; proc = proc->next) {
81 fprintf(fout, "\n");
82 ptype(proc->res_prefix, proc->res_type, 1);
83 fprintf(fout, "*\n");
84 pvname(proc->proc_name, vp->vers_num);
85 printarglist(proc, "clnt", "CLIENT *");
86 fprintf(fout, "{\n");
87 printbody(proc);
88 fprintf(fout, "}\n");
89 }
90 }
91 }
92
93 /*
94 * Writes out declarations of procedure's argument list.
95 * In either ANSI C style, in one of old rpcgen style (pass by reference),
96 * or new rpcgen style (multiple arguments, pass by value);
97 */
98
99 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
100
printarglist(proc,addargname,addargtype)101 void printarglist(proc, addargname, addargtype)
102 proc_list *proc;
103 char *addargname, *addargtype;
104 {
105 decl_list *l;
106
107 if (!newstyle) { /* old style: always pass argument by reference */
108 if (Cflag) { /* C++ style heading */
109 fprintf(fout, "(");
110 ptype(proc->args.decls->decl.prefix,
111 proc->args.decls->decl.type, 1);
112 fprintf(fout, "*argp, %s%s)\n", addargtype, addargname);
113 } else {
114 fprintf(fout, "(argp, %s)\n", addargname);
115 fprintf(fout, "\t");
116 ptype(proc->args.decls->decl.prefix,
117 proc->args.decls->decl.type, 1);
118 fprintf(fout, "*argp;\n");
119 }
120 } else if (streq(proc->args.decls->decl.type, "void")) {
121 /* newstyle, 0 argument */
122 if (Cflag)
123 fprintf(fout, "(%s%s)\n", addargtype, addargname);
124 else
125 fprintf(fout, "(%s)\n", addargname);
126 } else {
127 /* new style, 1 or multiple arguments */
128 if (!Cflag) {
129 fprintf(fout, "(");
130 for (l = proc->args.decls; l != NULL; l = l->next)
131 fprintf(fout, "%s, ", l->decl.name);
132 fprintf(fout, "%s)\n", addargname);
133 for (l = proc->args.decls; l != NULL; l = l->next)
134 pdeclaration(proc->args.argname, &l->decl, 1, ";\n");
135 } else { /* C++ style header */
136 fprintf(fout, "(");
137 for (l = proc->args.decls; l != NULL; l = l->next)
138 pdeclaration(proc->args.argname, &l->decl, 0, ", ");
139 fprintf(fout, " %s%s)\n", addargtype, addargname);
140 }
141 }
142
143 if (!Cflag)
144 fprintf(fout, "\t%s%s;\n", addargtype, addargname);
145 }
146
147 static char *
ampr(char * type)148 ampr(char *type)
149 {
150 if (isvectordef(type, REL_ALIAS)) {
151 return ("");
152 } else {
153 return ("&");
154 }
155 }
156
157 static void
printbody(proc)158 printbody(proc)
159 proc_list *proc;
160 {
161 decl_list *l;
162 bool_t args2 = (proc->arg_num > 1);
163
164 /*
165 * For new style with multiple arguments, need a structure in which
166 * to stuff the arguments.
167 */
168 if (newstyle && args2) {
169 fprintf(fout, "\t%s", proc->args.argname);
170 fprintf(fout, " arg;\n");
171 }
172 fprintf(fout, "\tstatic ");
173 if (streq(proc->res_type, "void")) {
174 fprintf(fout, "char ");
175 } else {
176 ptype(proc->res_prefix, proc->res_type, 0);
177 }
178 fprintf(fout, "%s;\n",RESULT);
179 fprintf(fout, "\n");
180 fprintf(fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n",
181 ampr(proc->res_type), RESULT, RESULT);
182 if (newstyle && !args2 && (streq(proc->args.decls->decl.type, "void"))) {
183 /* newstyle, 0 arguments */
184 fprintf(fout,
185 "\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name);
186 fprintf(fout,
187 ", NULL, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
188 stringfix(proc->res_type), ampr(proc->res_type), RESULT);
189 } else if (newstyle && args2) {
190 /* newstyle, multiple arguments: stuff arguments into structure */
191 for (l = proc->args.decls; l != NULL; l = l->next) {
192 fprintf(fout, "\targ.%s = %s;\n",
193 l->decl.name, l->decl.name);
194 }
195 fprintf(fout,
196 "\tif (clnt_call(clnt, %s, xdr_%s", proc->proc_name,
197 proc->args.argname);
198 fprintf(fout,
199 ", &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
200 stringfix(proc->res_type),
201 ampr(proc->res_type), RESULT);
202 } else { /* single argument, new or old style */
203 fprintf(fout,
204 "\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, "
205 "%s%s, TIMEOUT) != RPC_SUCCESS) {\n",
206 proc->proc_name,
207 stringfix(proc->args.decls->decl.type),
208 (newstyle ? "&" : ""),
209 (newstyle ? proc->args.decls->decl.name : "argp"),
210 stringfix(proc->res_type),
211 ampr(proc->res_type),RESULT);
212 }
213 fprintf(fout, "\t\treturn (NULL);\n");
214 fprintf(fout, "\t}\n");
215 if (streq(proc->res_type, "void")) {
216 fprintf(fout, "\treturn ((void *)%s%s);\n",
217 ampr(proc->res_type),RESULT);
218 } else {
219 fprintf(fout, "\treturn (%s%s);\n", ampr(proc->res_type),RESULT);
220 }
221 }
222
223