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, MERCHANTABILITY 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 * @(#)rpc_clntout.c 1.15 94/04/25 SMI; 1.11 89/02/22 (C) 1987 SMI
30 * $FreeBSD: src/usr.bin/rpcgen/rpc_clntout.c,v 1.12 2005/11/13 21:17:24 dwmalone Exp $
31 */
32
33 /*
34 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
35 * Copyright (C) 1987, Sun Microsytsems, Inc.
36 */
37 #include <stdio.h>
38 #include <string.h>
39 #include <rpc/types.h>
40 #include "rpc_parse.h"
41 #include "rpc_scan.h"
42 #include "rpc_util.h"
43
44 static void write_program(definition *);
45 static void printbody(proc_list *);
46
47 static char RESULT[] = "clnt_res";
48
49 #define DEFAULT_TIMEOUT 25 /* in seconds */
50
51 void
write_stubs(void)52 write_stubs(void)
53 {
54 list *l;
55 definition *def;
56
57 f_print(fout,
58 "\n/* Default timeout can be changed using clnt_control() */\n");
59 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
60 DEFAULT_TIMEOUT);
61 for (l = defined; l != NULL; l = l->next) {
62 def = (definition *) l->val;
63 if (def->def_kind == DEF_PROGRAM)
64 write_program(def);
65 }
66 }
67
68 static void
write_program(definition * def)69 write_program(definition *def)
70 {
71 version_list *vp;
72 proc_list *proc;
73
74 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
75 for (proc = vp->procs; proc != NULL; proc = proc->next) {
76 f_print(fout, "\n");
77 if (mtflag == 0) {
78 ptype(proc->res_prefix, proc->res_type, 1);
79 f_print(fout, "*\n");
80 pvname(proc->proc_name, vp->vers_num);
81 printarglist(proc, RESULT, "clnt", "CLIENT *");
82 } else {
83 f_print(fout, "enum clnt_stat \n");
84 pvname(proc->proc_name, vp->vers_num);
85 printarglist(proc, RESULT, "clnt", "CLIENT *");
86
87 }
88 f_print(fout, "{\n");
89 printbody(proc);
90
91 f_print(fout, "}\n");
92 }
93 }
94 }
95
96 /*
97 * Writes out declarations of procedure's argument list.
98 * In either ANSI C style, in one of old rpcgen style (pass by reference),
99 * or new rpcgen style (multiple arguments, pass by value);
100 */
101
102 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
103
104 void
printarglist(proc_list * proc,const char * result,const char * addargname,const char * addargtype)105 printarglist(proc_list *proc, const char *result, const char *addargname,
106 const char *addargtype)
107 {
108 decl_list *l;
109
110 if (!newstyle) {
111 /* old style: always pass argument by reference */
112 f_print(fout, "(");
113 ptype(proc->args.decls->decl.prefix,
114 proc->args.decls->decl.type, 1);
115
116 if (mtflag) {/* Generate result field */
117 f_print(fout, "*argp, ");
118 ptype(proc->res_prefix, proc->res_type, 1);
119 f_print(fout, "*%s, %s%s)\n",
120 result, addargtype, addargname);
121 } else
122 f_print(fout, "*argp, %s%s)\n", addargtype, addargname);
123 } else if (streq(proc->args.decls->decl.type, "void")) {
124 /* newstyle, 0 argument */
125 if (mtflag) {
126 f_print(fout, "(");
127 ptype(proc->res_prefix, proc->res_type, 1);
128 f_print(fout, "*%s, %s%s)\n",
129 result, addargtype, addargname);
130 } else
131 f_print(fout, "(%s%s)\n", addargtype, addargname);
132 } else {
133 /* new style, 1 or multiple arguments */
134 f_print(fout, "(");
135 for (l = proc->args.decls; l != NULL; l = l->next) {
136 pdeclaration(proc->args.argname, &l->decl, 0, ", ");
137 }
138 if (mtflag) {
139 ptype(proc->res_prefix, proc->res_type, 1);
140 f_print(fout, "*%s, ", result);
141
142 }
143 f_print(fout, "%s%s)\n", addargtype, addargname);
144 }
145 }
146
147
148
149 static const char *
ampr(const char * type)150 ampr(const char *type)
151 {
152 if (isvectordef(type, REL_ALIAS))
153 return ("");
154 else
155 return ("&");
156 }
157
158 static void
printbody(proc_list * proc)159 printbody(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
169
170 if (newstyle && args2) {
171 f_print(fout, "\t%s", proc->args.argname);
172 f_print(fout, " arg;\n");
173 }
174 if (!mtflag) {
175 f_print(fout, "\tstatic ");
176 if (streq(proc->res_type, "void"))
177 f_print(fout, "char ");
178 else
179 ptype(proc->res_prefix, proc->res_type, 0);
180 f_print(fout, "%s;\n", RESULT);
181 f_print(fout, "\n");
182 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n",
183 ampr(proc->res_type), RESULT, RESULT);
184 }
185 if (newstyle && !args2 &&
186 (streq(proc->args.decls->decl.type, "void"))) {
187 /* newstyle, 0 arguments */
188
189 if (mtflag)
190 f_print(fout, "\t return ");
191 else
192 f_print(fout, "\t if ");
193
194 f_print(fout,
195 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ",
196 proc->proc_name);
197 f_print(fout, "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, "
198 "(caddr_t) %s%s,", stringfix(proc->res_type),
199 (mtflag) ? "" : ampr(proc->res_type), RESULT);
200
201 if (mtflag)
202 f_print(fout, "\n\t\tTIMEOUT));\n");
203 else
204 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
205
206 } else if (newstyle && args2) {
207 /*
208 * Newstyle, multiple arguments
209 * stuff arguments into structure
210 */
211 for (l = proc->args.decls; l != NULL; l = l->next) {
212 f_print(fout, "\targ.%s = %s;\n",
213 l->decl.name, l->decl.name);
214 }
215 if (mtflag)
216 f_print(fout, "\treturn ");
217 else
218 f_print(fout, "\tif ");
219 f_print(fout, "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s",
220 proc->proc_name,proc->args.argname);
221 f_print(fout, ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, "
222 "(caddr_t) %s%s,", stringfix(proc->res_type),
223 (mtflag) ? "" : ampr(proc->res_type), RESULT);
224 if (mtflag)
225 f_print(fout, "\n\t\tTIMEOUT));\n");
226 else
227 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
228 } else { /* single argument, new or old style */
229 if (!mtflag) {
230 f_print(fout, "\tif (clnt_call(clnt, %s,\n"
231 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n"
232 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n"
233 "\t\tTIMEOUT) != RPC_SUCCESS) {\n",
234 proc->proc_name,
235 stringfix(proc->args.decls->decl.type),
236 (newstyle ? "&" : ""),
237 (newstyle) ? proc->args.decls->decl.name : "argp",
238 stringfix(proc->res_type),
239 ampr(proc->res_type), RESULT);
240 } else {
241 f_print(fout, "\treturn (clnt_call(clnt, %s,\n"
242 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n"
243 "\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n"
244 "\t\tTIMEOUT));\n", proc->proc_name,
245 stringfix(proc->args.decls->decl.type),
246 (newstyle ? "&" : ""),
247 (newstyle) ? proc->args.decls->decl.name : "argp",
248 stringfix(proc->res_type), "", RESULT);
249 }
250 }
251 if (!mtflag) {
252 f_print(fout, "\t\treturn (NULL);\n");
253 f_print(fout, "\t}\n");
254
255 if (streq(proc->res_type, "void")) {
256 f_print(fout, "\treturn ((void *)%s%s);\n",
257 ampr(proc->res_type), RESULT);
258 } else {
259 f_print(fout, "\treturn (%s%s);\n",
260 ampr(proc->res_type), RESULT);
261 }
262 }
263 }
264