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 #if 0
31 #ifndef lint
32 #ident "@(#)rpc_clntout.c 1.15 94/04/25 SMI"
33 static char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI";
34 #endif
35 #endif
36
37 #include <sys/cdefs.h>
38 /*
39 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
40 * Copyright (C) 1987, Sun Microsytsems, Inc.
41 */
42 #include <stdio.h>
43 #include <string.h>
44 #include <rpc/types.h>
45 #include "rpc_parse.h"
46 #include "rpc_scan.h"
47 #include "rpc_util.h"
48
49 static void write_program( definition * );
50 static void printbody( proc_list * );
51
52 static char RESULT[] = "clnt_res";
53
54
55 #define DEFAULT_TIMEOUT 25 /* in seconds */
56
57
58 void
write_stubs(void)59 write_stubs(void)
60 {
61 list *l;
62 definition *def;
63
64 f_print(fout,
65 "\n/* Default timeout can be changed using clnt_control() */\n");
66 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
67 DEFAULT_TIMEOUT);
68 for (l = defined; l != NULL; l = l->next) {
69 def = (definition *) l->val;
70 if (def->def_kind == DEF_PROGRAM) {
71 write_program(def);
72 }
73 }
74 }
75
76 static void
write_program(definition * def)77 write_program(definition *def)
78 {
79 version_list *vp;
80 proc_list *proc;
81
82 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
83 for (proc = vp->procs; proc != NULL; proc = proc->next) {
84 f_print(fout, "\n");
85 if (mtflag == 0) {
86 ptype(proc->res_prefix, proc->res_type, 1);
87 f_print(fout, "*\n");
88 pvname(proc->proc_name, vp->vers_num);
89 printarglist(proc, RESULT, "clnt", "CLIENT *");
90 } else {
91 f_print(fout, "enum clnt_stat \n");
92 pvname(proc->proc_name, vp->vers_num);
93 printarglist(proc, RESULT, "clnt", "CLIENT *");
94
95 }
96 f_print(fout, "{\n");
97 printbody(proc);
98
99 f_print(fout, "}\n");
100 }
101 }
102 }
103
104 /*
105 * Writes out declarations of procedure's argument list.
106 * In either ANSI C style, in one of old rpcgen style (pass by reference),
107 * or new rpcgen style (multiple arguments, pass by value);
108 */
109
110 /* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
111
112 void
printarglist(proc_list * proc,const char * result,const char * addargname,const char * addargtype)113 printarglist(proc_list *proc, const char *result, const char *addargname,
114 const char *addargtype)
115 {
116
117 decl_list *l;
118
119 if (!newstyle) {
120 /* old style: always pass argument by reference */
121 f_print(fout, "(");
122 ptype(proc->args.decls->decl.prefix,
123 proc->args.decls->decl.type, 1);
124
125 if (mtflag) {/* Generate result field */
126 f_print(fout, "*argp, ");
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, "*argp, %s%s)\n", addargtype, addargname);
132 } else if (streq(proc->args.decls->decl.type, "void")) {
133 /* newstyle, 0 argument */
134 if (mtflag) {
135 f_print(fout, "(");
136 ptype(proc->res_prefix, proc->res_type, 1);
137 f_print(fout, "*%s, %s%s)\n",
138 result, addargtype, addargname);
139 } else
140 f_print(fout, "(%s%s)\n", addargtype, addargname);
141 } else {
142 /* new style, 1 or multiple arguments */
143 f_print(fout, "(");
144 for (l = proc->args.decls; l != NULL; l = l->next) {
145 pdeclaration(proc->args.argname, &l->decl, 0, ", ");
146 }
147 if (mtflag) {
148 ptype(proc->res_prefix, proc->res_type, 1);
149 f_print(fout, "*%s, ", result);
150
151 }
152 f_print(fout, "%s%s)\n", addargtype, addargname);
153 }
154 }
155
156
157
158 static const char *
ampr(const char * type)159 ampr(const char *type)
160 {
161 if (isvectordef(type, REL_ALIAS)) {
162 return ("");
163 } else {
164 return ("&");
165 }
166 }
167
168 static void
printbody(proc_list * proc)169 printbody(proc_list *proc)
170 {
171 decl_list *l;
172 bool_t args2 = (proc->arg_num > 1);
173
174 /*
175 * For new style with multiple arguments, need a structure in which
176 * to stuff the arguments.
177 */
178
179
180 if (newstyle && args2) {
181 f_print(fout, "\t%s", proc->args.argname);
182 f_print(fout, " arg;\n");
183 }
184 if (!mtflag) {
185 f_print(fout, "\tstatic ");
186 if (streq(proc->res_type, "void")) {
187 f_print(fout, "char ");
188 } else {
189 ptype(proc->res_prefix, proc->res_type, 0);
190 }
191 f_print(fout, "%s;\n", RESULT);
192 f_print(fout, "\n");
193 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n",
194 ampr(proc->res_type), RESULT, RESULT);
195
196 }
197 if (newstyle && !args2 &&
198 (streq(proc->args.decls->decl.type, "void"))) {
199 /* newstyle, 0 arguments */
200
201 if (mtflag)
202 f_print(fout, "\t return ");
203 else
204 f_print(fout, "\t if ");
205
206 f_print(fout,
207 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ",
208 proc->proc_name);
209 f_print(fout,
210 "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
211 stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
212 RESULT);
213
214 if (mtflag)
215 f_print(fout, "\n\t\tTIMEOUT));\n");
216 else
217 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
218
219 } else if (newstyle && args2) {
220 /*
221 * Newstyle, multiple arguments
222 * stuff arguments into structure
223 */
224 for (l = proc->args.decls; l != NULL; l = l->next) {
225 f_print(fout, "\targ.%s = %s;\n",
226 l->decl.name, l->decl.name);
227 }
228 if (mtflag)
229 f_print(fout, "\treturn ");
230 else
231 f_print(fout, "\tif ");
232 f_print(fout,
233 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s",
234 proc->proc_name,proc->args.argname);
235 f_print(fout,
236 ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
237 stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
238 RESULT);
239 if (mtflag)
240 f_print(fout, "\n\t\tTIMEOUT));\n");
241 else
242 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
243 } else { /* single argument, new or old style */
244 if (!mtflag)
245 f_print(fout,
246 "\tif (clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\tTIMEOUT) != RPC_SUCCESS) {\n",
247 proc->proc_name,
248 stringfix(proc->args.decls->decl.type),
249 (newstyle ? "&" : ""),
250 (newstyle ? proc->args.decls->decl.name : "argp"),
251 stringfix(proc->res_type), ampr(proc->res_type),
252 RESULT);
253 else
254
255 f_print(fout,
256 "\treturn (clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,\n\t\tTIMEOUT));\n",
257 proc->proc_name,
258 stringfix(proc->args.decls->decl.type),
259 (newstyle ? "&" : ""),
260 (newstyle ? proc->args.decls->decl.name : "argp"),
261 stringfix(proc->res_type), "",
262 RESULT);
263 }
264 if (!mtflag) {
265 f_print(fout, "\t\treturn (NULL);\n");
266 f_print(fout, "\t}\n");
267
268 if (streq(proc->res_type, "void")) {
269 f_print(fout, "\treturn ((void *)%s%s);\n",
270 ampr(proc->res_type), RESULT);
271 } else {
272 f_print(fout, "\treturn (%s%s);\n",
273 ampr(proc->res_type), RESULT);
274 }
275 }
276 }
277