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_sample.c, Sample client-server code outputter for the RPC protocol compiler
32 * Copyright (C) 1987, Sun Microsystems, Inc.
33 */
34
35 #include <stdio.h>
36 #include <string.h>
37 #include "rpc_parse.h"
38 #include "rpc_scan.h"
39 #include "rpc_util.h"
40
41
42 static char RQSTP[] = "rqstp";
43
44 static void write_sample_client(const char *, version_list * );
45 static void write_sample_server( definition * );
46 static void return_type( proc_list * );
47
48 void
write_sample_svc(definition * def)49 write_sample_svc(definition *def)
50 {
51
52 if (def->def_kind != DEF_PROGRAM)
53 return;
54 write_sample_server(def);
55 }
56
57
58 int
write_sample_clnt(definition * def)59 write_sample_clnt(definition *def)
60 {
61 version_list *vp;
62 int count = 0;
63
64 if (def->def_kind != DEF_PROGRAM)
65 return(0);
66 /* generate sample code for each version */
67 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
68 write_sample_client(def->def_name, vp);
69 ++count;
70 }
71 return(count);
72 }
73
74
75 static void
write_sample_client(const char * program_name,version_list * vp)76 write_sample_client(const char *program_name, version_list *vp)
77 {
78 proc_list *proc;
79 int i;
80 decl_list *l;
81
82 f_print(fout, "\n\nvoid\n");
83 pvname(program_name, vp->vers_num);
84 f_print(fout, "(char *host)\n{\n");
85 f_print(fout, "\tCLIENT *clnt;\n");
86
87 i = 0;
88 for (proc = vp->procs; proc != NULL; proc = proc->next) {
89 f_print(fout, "\t");
90 if (mtflag) {
91 f_print(fout, "enum clnt_stat retval_%d;\n\t", ++i);
92 ptype(proc->res_prefix, proc->res_type, 1);
93 f_print(fout, "result_%d;\n", i);
94 } else {
95 ptype(proc->res_prefix, proc->res_type, 1);
96 f_print(fout, " *result_%d;\n",++i);
97 }
98 /* print out declarations for arguments */
99 if(proc->arg_num < 2 && !newstyle) {
100 f_print(fout, "\t");
101 if(!streq(proc->args.decls->decl.type, "void"))
102 ptype(proc->args.decls->decl.prefix,
103 proc->args.decls->decl.type, 1);
104 else
105 f_print(fout, "char * "); /* cannot have "void" type */
106 f_print(fout, " ");
107 pvname(proc->proc_name, vp->vers_num);
108 f_print(fout, "_arg;\n");
109 } else if (!streq(proc->args.decls->decl.type, "void")) {
110 for (l = proc->args.decls; l != NULL; l = l->next) {
111 f_print(fout, "\t");
112 ptype(l->decl.prefix, l->decl.type, 1);
113 if (strcmp(l->decl.type,"string") >= 1)
114 f_print(fout, " ");
115 pvname(proc->proc_name, vp->vers_num);
116 f_print(fout, "_%s;\n", l->decl.name);
117 }
118 }
119 }
120
121 /* generate creation of client handle */
122 f_print(fout, "\n#ifndef\tDEBUG\n");
123 f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
124 program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
125 f_print(fout, "\tif (clnt == (CLIENT *) NULL) {\n");
126 f_print(fout, "\t\tclnt_pcreateerror(host);\n");
127 f_print(fout, "\t\texit(1);\n\t}\n");
128 f_print(fout, "#endif\t/* DEBUG */\n\n");
129
130 /* generate calls to procedures */
131 i = 0;
132 for (proc = vp->procs; proc != NULL; proc = proc->next) {
133 if (mtflag)
134 f_print(fout, "\tretval_%d = ",++i);
135 else
136 f_print(fout, "\tresult_%d = ",++i);
137 pvname(proc->proc_name, vp->vers_num);
138 if (proc->arg_num < 2 && !newstyle) {
139 f_print(fout, "(");
140 if(streq(proc->args.decls->decl.type, "void"))
141 /* cast to void * */
142 f_print(fout, "(void *)");
143 f_print(fout, "&");
144 pvname(proc->proc_name, vp->vers_num);
145 if (mtflag)
146 f_print(fout, "_arg, &result_%d, clnt);\n",
147 i);
148 else
149 f_print(fout, "_arg, clnt);\n");
150
151 } else if (streq(proc->args.decls->decl.type, "void")) {
152 if (mtflag)
153 f_print(fout, "(&result_%d, clnt);\n", i);
154 else
155 f_print(fout, "(clnt);\n");
156 }
157 else {
158 f_print(fout, "(");
159 for (l = proc->args.decls; l != NULL; l = l->next) {
160 pvname(proc->proc_name, vp->vers_num);
161 f_print(fout, "_%s, ", l->decl.name);
162 }
163 if (mtflag)
164 f_print(fout, "&result_%d, ", i);
165
166 f_print(fout, "clnt);\n");
167 }
168 if (mtflag) {
169 f_print(fout, "\tif (retval_%d != RPC_SUCCESS) {\n", i);
170
171 } else {
172 f_print(fout, "\tif (result_%d == (", i);
173 ptype(proc->res_prefix, proc->res_type, 1);
174 f_print(fout, "*) NULL) {\n");
175 }
176 f_print(fout, "\t\tclnt_perror(clnt, \"call failed\");\n");
177 f_print(fout, "\t}\n");
178 }
179
180 f_print(fout, "#ifndef\tDEBUG\n");
181 f_print(fout, "\tclnt_destroy(clnt);\n");
182 f_print(fout, "#endif\t /* DEBUG */\n");
183 f_print(fout, "}\n");
184 }
185
186 static void
write_sample_server(definition * def)187 write_sample_server(definition *def)
188 {
189 version_list *vp;
190 proc_list *proc;
191
192 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
193 for (proc = vp->procs; proc != NULL; proc = proc->next) {
194 f_print(fout, "\n");
195 if (!mtflag) {
196 return_type(proc);
197 f_print(fout, "*\n");
198 } else
199 f_print(fout, "bool_t\n");
200 pvname_svc(proc->proc_name, vp->vers_num);
201 printarglist(proc, "result", RQSTP, "struct svc_req *");
202
203 f_print(fout, "{\n");
204 if (!mtflag) {
205 f_print(fout, "\tstatic ");
206 if(!streq(proc->res_type, "void"))
207 return_type(proc);
208 else
209 f_print(fout, "char *");
210 /* cannot have void type */
211 f_print(fout, " result;\n");
212 }
213 else
214 f_print(fout, "\tbool_t retval;\n");
215 f_print(fout,
216 "\n\t/*\n\t * insert server code here\n\t */\n\n");
217
218 if (!mtflag)
219 if(!streq(proc->res_type, "void"))
220 f_print(fout, "\treturn (&result);\n}\n");
221 else /* cast back to void * */
222 f_print(fout, "\treturn((void *) &result);\n}\n");
223 else
224 f_print(fout, "\treturn (retval);\n}\n");
225 }
226 /* put in sample freeing routine */
227 if (mtflag) {
228 f_print(fout, "\nint\n");
229 pvname(def->def_name, vp->vers_num);
230 f_print(fout,"_freeresult(SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)\n");
231 f_print(fout, "{\n");
232 f_print(fout, "\t(void) xdr_free(xdr_result, result);\n");
233 f_print(fout,
234 "\n\t/*\n\t * Insert additional freeing code here, if needed\n\t */\n");
235 f_print(fout, "\n}\n");
236
237
238 }
239 }
240 }
241
242
243
244 static void
return_type(proc_list * plist)245 return_type(proc_list *plist)
246 {
247 ptype(plist->res_prefix, plist->res_type, 1);
248 }
249
250 void
add_sample_msg(void)251 add_sample_msg(void)
252 {
253 f_print(fout, "/*\n");
254 f_print(fout, " * This is sample code generated by rpcgen.\n");
255 f_print(fout, " * These are only templates and you can use them\n");
256 f_print(fout, " * as a guideline for developing your own functions.\n");
257 f_print(fout, " */\n\n");
258 }
259
260 void
write_sample_clnt_main(void)261 write_sample_clnt_main(void)
262 {
263 list *l;
264 definition *def;
265 version_list *vp;
266
267 f_print(fout, "\n\n");
268 f_print(fout, "int\n");
269 f_print(fout, "main(int argc, char *argv[])\n{\n");
270
271 f_print(fout, "\tchar *host;");
272 f_print(fout, "\n\n\tif (argc < 2) {");
273 f_print(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n");
274 f_print(fout, "\t\texit(1);\n\t}");
275 f_print(fout, "\n\thost = argv[1];\n");
276
277 for (l = defined; l != NULL; l = l->next) {
278 def = l->val;
279 if (def->def_kind != DEF_PROGRAM) {
280 continue;
281 }
282 for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
283 f_print(fout, "\t");
284 pvname(def->def_name, vp->vers_num);
285 f_print(fout, "(host);\n");
286 }
287 }
288 f_print(fout, "}\n");
289 }
290