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 /*
31 * rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
32 * Copyright (C) 1987, Sun Microsytsems, Inc.
33 */
34 #include <stdio.h>
35 #include <string.h>
36 #include <rpc/types.h>
37 #include "rpc_parse.h"
38 #include "rpc_scan.h"
39 #include "rpc_util.h"
40
41 static void write_program( definition * );
42 static void printbody( proc_list * );
43
44 static char RESULT[] = "clnt_res";
45
46
47 #define DEFAULT_TIMEOUT 25 /* in seconds */
48
49
50 void
write_stubs(void)51 write_stubs(void)
52 {
53 list *l;
54 definition *def;
55
56 f_print(fout,
57 "\n/* Default timeout can be changed using clnt_control() */\n");
58 f_print(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
59 DEFAULT_TIMEOUT);
60 for (l = defined; l != NULL; l = l->next) {
61 def = (definition *) l->val;
62 if (def->def_kind == DEF_PROGRAM) {
63 write_program(def);
64 }
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
109 decl_list *l;
110
111 if (!newstyle) {
112 /* old style: always pass argument by reference */
113 f_print(fout, "(");
114 ptype(proc->args.decls->decl.prefix,
115 proc->args.decls->decl.type, 1);
116
117 if (mtflag) {/* Generate result field */
118 f_print(fout, "*argp, ");
119 ptype(proc->res_prefix, proc->res_type, 1);
120 f_print(fout, "*%s, %s%s)\n",
121 result, addargtype, addargname);
122 } else
123 f_print(fout, "*argp, %s%s)\n", addargtype, addargname);
124 } else if (streq(proc->args.decls->decl.type, "void")) {
125 /* newstyle, 0 argument */
126 if (mtflag) {
127 f_print(fout, "(");
128 ptype(proc->res_prefix, proc->res_type, 1);
129 f_print(fout, "*%s, %s%s)\n",
130 result, addargtype, addargname);
131 } else
132 f_print(fout, "(%s%s)\n", addargtype, addargname);
133 } else {
134 /* new style, 1 or multiple arguments */
135 f_print(fout, "(");
136 for (l = proc->args.decls; l != NULL; l = l->next) {
137 pdeclaration(proc->args.argname, &l->decl, 0, ", ");
138 }
139 if (mtflag) {
140 ptype(proc->res_prefix, proc->res_type, 1);
141 f_print(fout, "*%s, ", result);
142
143 }
144 f_print(fout, "%s%s)\n", addargtype, addargname);
145 }
146 }
147
148
149
150 static const char *
ampr(const char * type)151 ampr(const char *type)
152 {
153 if (isvectordef(type, REL_ALIAS)) {
154 return ("");
155 } else {
156 return ("&");
157 }
158 }
159
160 static void
printbody(proc_list * proc)161 printbody(proc_list *proc)
162 {
163 decl_list *l;
164 bool_t args2 = (proc->arg_num > 1);
165
166 /*
167 * For new style with multiple arguments, need a structure in which
168 * to stuff the arguments.
169 */
170
171
172 if (newstyle && args2) {
173 f_print(fout, "\t%s", proc->args.argname);
174 f_print(fout, " arg;\n");
175 }
176 if (!mtflag) {
177 f_print(fout, "\tstatic ");
178 if (streq(proc->res_type, "void")) {
179 f_print(fout, "char ");
180 } else {
181 ptype(proc->res_prefix, proc->res_type, 0);
182 }
183 f_print(fout, "%s;\n", RESULT);
184 f_print(fout, "\n");
185 f_print(fout, "\tmemset((char *)%s%s, 0, sizeof (%s));\n",
186 ampr(proc->res_type), RESULT, RESULT);
187
188 }
189 if (newstyle && !args2 &&
190 (streq(proc->args.decls->decl.type, "void"))) {
191 /* newstyle, 0 arguments */
192
193 if (mtflag)
194 f_print(fout, "\t return ");
195 else
196 f_print(fout, "\t if ");
197
198 f_print(fout,
199 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_void, ",
200 proc->proc_name);
201 f_print(fout,
202 "(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
203 stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
204 RESULT);
205
206 if (mtflag)
207 f_print(fout, "\n\t\tTIMEOUT));\n");
208 else
209 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
210
211 } else if (newstyle && args2) {
212 /*
213 * Newstyle, multiple arguments
214 * stuff arguments into structure
215 */
216 for (l = proc->args.decls; l != NULL; l = l->next) {
217 f_print(fout, "\targ.%s = %s;\n",
218 l->decl.name, l->decl.name);
219 }
220 if (mtflag)
221 f_print(fout, "\treturn ");
222 else
223 f_print(fout, "\tif ");
224 f_print(fout,
225 "(clnt_call(clnt, %s,\n\t\t(xdrproc_t) xdr_%s",
226 proc->proc_name,proc->args.argname);
227 f_print(fout,
228 ", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
229 stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
230 RESULT);
231 if (mtflag)
232 f_print(fout, "\n\t\tTIMEOUT));\n");
233 else
234 f_print(fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
235 } else { /* single argument, new or old style */
236 if (!mtflag)
237 f_print(fout,
238 "\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",
239 proc->proc_name,
240 stringfix(proc->args.decls->decl.type),
241 (newstyle ? "&" : ""),
242 (newstyle ? proc->args.decls->decl.name : "argp"),
243 stringfix(proc->res_type), ampr(proc->res_type),
244 RESULT);
245 else
246
247 f_print(fout,
248 "\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",
249 proc->proc_name,
250 stringfix(proc->args.decls->decl.type),
251 (newstyle ? "&" : ""),
252 (newstyle ? proc->args.decls->decl.name : "argp"),
253 stringfix(proc->res_type), "",
254 RESULT);
255 }
256 if (!mtflag) {
257 f_print(fout, "\t\treturn (NULL);\n");
258 f_print(fout, "\t}\n");
259
260 if (streq(proc->res_type, "void")) {
261 f_print(fout, "\treturn ((void *)%s%s);\n",
262 ampr(proc->res_type), RESULT);
263 } else {
264 f_print(fout, "\treturn (%s%s);\n",
265 ampr(proc->res_type), RESULT);
266 }
267 }
268 }
269