xref: /titanic_41/usr/src/cmd/rpcgen/rpc_sample.c (revision 11a8fa6cb17403e630122ac19b39a323c6e64142)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 
23 /*
24  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
25  * Use is subject to license terms.
26  */
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29 /*
30  * University Copyright- Copyright (c) 1982, 1986, 1988
31  * The Regents of the University of California
32  * All Rights Reserved
33  *
34  * University Acknowledgment- Portions of this document are derived from
35  * software developed by the University of California, Berkeley, and its
36  * contributors.
37  */
38 
39 #pragma ident	"%Z%%M%	%I%	%E% SMI"
40 
41 /*
42  * rpc_sample.c, Sample client-server code outputter
43  * for the RPC protocol compiler
44  */
45 
46 #include <stdio.h>
47 #include <string.h>
48 #include "rpc_parse.h"
49 #include "rpc_util.h"
50 
51 
52 static char RQSTP[] = "rqstp";
53 
54 extern void printarglist(proc_list *, char *, char *, char *);
55 
56 static void write_sample_client(char *, version_list *);
57 static void write_sample_server(definition *);
58 static void return_type(proc_list *);
59 
60 void
61 write_sample_svc(definition *def)
62 {
63 	if (def->def_kind != DEF_PROGRAM)
64 		return;
65 	write_sample_server(def);
66 }
67 
68 int
69 write_sample_clnt(definition *def)
70 {
71 	version_list *vp;
72 	int count = 0;
73 
74 	if (def->def_kind != DEF_PROGRAM)
75 		return (0);
76 	/* generate sample code for each version */
77 	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
78 		write_sample_client(def->def_name, vp);
79 		++count;
80 	}
81 	return (count);
82 }
83 
84 static void
85 write_sample_client(char *program_name, version_list *vp)
86 {
87 	proc_list *proc;
88 	int i;
89 	decl_list *l;
90 
91 	f_print(fout, "\n\nvoid\n");
92 	pvname(program_name, vp->vers_num);
93 	if (Cflag)
94 		f_print(fout, "(char *host)\n{\n");
95 	else
96 		f_print(fout, "(host)\n\tchar *host;\n{\n");
97 	f_print(fout, "\tCLIENT *clnt;\n");
98 
99 	i = 0;
100 	for (proc = vp->procs; proc != NULL; proc = proc->next) {
101 		f_print(fout, "\t");
102 		if (mtflag) {
103 			f_print(fout, "enum clnt_stat retval_%d;\n", ++i);
104 			if (!streq(proc->res_type, "oneway")) {
105 				f_print(fout, "\t");
106 				if (!streq(proc->res_type, "void"))
107 					ptype(proc->res_prefix,
108 					    proc->res_type, 1);
109 				else
110 					f_print(fout, "void *");
111 				f_print(fout, "result_%d;\n", i);
112 			}
113 		} else {
114 			ptype(proc->res_prefix, proc->res_type, 1);
115 			f_print(fout, " *result_%d;\n", ++i);
116 		}
117 		/* print out declarations for arguments */
118 		if (proc->arg_num < 2 && !newstyle) {
119 			f_print(fout, "\t");
120 			if (!streq(proc->args.decls->decl.type, "void"))
121 				ptype(proc->args.decls->decl.prefix,
122 					proc->args.decls->decl.type, 1);
123 			else
124 				/* cannot have "void" type */
125 				f_print(fout, "char * ");
126 			f_print(fout, " ");
127 			pvname(proc->proc_name, vp->vers_num);
128 			f_print(fout, "_arg;\n");
129 		} else if (!streq(proc->args.decls->decl.type, "void")) {
130 			for (l = proc->args.decls; l != NULL; l = l->next) {
131 				f_print(fout, "\t");
132 				ptype(l->decl.prefix, l->decl.type, 1);
133 				if (strcmp(l->decl.type, "string") == 1)
134 				    f_print(fout, " ");
135 				pvname(proc->proc_name, vp->vers_num);
136 				f_print(fout, "_%s;\n", l->decl.name);
137 			}
138 		}
139 	}
140 
141 	/* generate creation of client handle */
142 	f_print(fout, "\n#ifndef\tDEBUG\n");
143 	f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
144 		program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
145 	f_print(fout, "\tif (clnt == (CLIENT *) NULL) {\n");
146 	f_print(fout, "\t\tclnt_pcreateerror(host);\n");
147 	f_print(fout, "\t\texit(1);\n\t}\n");
148 	f_print(fout, "#endif\t/* DEBUG */\n\n");
149 
150 	/* generate calls to procedures */
151 	i = 0;
152 	for (proc = vp->procs; proc != NULL; proc = proc->next) {
153 		if (mtflag)
154 			f_print(fout, "\tretval_%d = ", ++i);
155 		else
156 			f_print(fout, "\tresult_%d = ", ++i);
157 		pvname(proc->proc_name, vp->vers_num);
158 		if (proc->arg_num < 2 && !newstyle) {
159 			f_print(fout, "(");
160 			if (streq(proc->args.decls->decl.type, "void"))
161 				/* cast to void * */
162 				f_print(fout, "(void *)");
163 			f_print(fout, "&");
164 			pvname(proc->proc_name, vp->vers_num);
165 			if (mtflag) {
166 				if (streq(proc->res_type, "oneway"))
167 					f_print(fout, "_arg, clnt);\n");
168 				else
169 					f_print(fout,
170 					    "_arg, &result_%d, clnt);\n", i);
171 			} else
172 				f_print(fout, "_arg, clnt);\n");
173 
174 		} else if (streq(proc->args.decls->decl.type, "void")) {
175 			if (mtflag) {
176 				if (streq(proc->res_type, "oneway"))
177 					f_print(fout, "(clnt);\n");
178 				else
179 					f_print(fout,
180 					    "(&result_%d, clnt);\n", i);
181 			} else
182 				f_print(fout, "(clnt);\n");
183 		} else {
184 			f_print(fout, "(");
185 			for (l = proc->args.decls;  l != NULL; l = l->next) {
186 				pvname(proc->proc_name, vp->vers_num);
187 				f_print(fout, "_%s, ", l->decl.name);
188 			}
189 			if (mtflag) {
190 				if (!streq(proc->res_type, "oneway"))
191 					f_print(fout, "&result_%d, ", i);
192 			}
193 
194 			f_print(fout, "clnt);\n");
195 		}
196 		if (mtflag) {
197 			f_print(fout, "\tif (retval_%d != RPC_SUCCESS) {\n", i);
198 		} else {
199 			f_print(fout, "\tif (result_%d == (", i);
200 			ptype(proc->res_prefix, proc->res_type, 1);
201 			f_print(fout, "*) NULL) {\n");
202 		}
203 		f_print(fout, "\t\tclnt_perror(clnt, \"call failed\");\n");
204 		f_print(fout, "\t}\n");
205 	}
206 
207 	f_print(fout, "#ifndef\tDEBUG\n");
208 	f_print(fout, "\tclnt_destroy(clnt);\n");
209 	f_print(fout, "#endif\t	/* DEBUG */\n");
210 	f_print(fout, "}\n");
211 }
212 
213 static void
214 write_sample_server(definition *def)
215 {
216 	version_list *vp;
217 	proc_list *proc;
218 
219 	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
220 		for (proc = vp->procs; proc != NULL; proc = proc->next) {
221 			f_print(fout, "\n");
222 			if (!mtflag) {
223 				return_type(proc);
224 				f_print(fout, "*\n");
225 			} else {
226 				f_print(fout, "bool_t\n");
227 			}
228 			if (Cflag || mtflag)
229 				pvname_svc(proc->proc_name, vp->vers_num);
230 			else
231 				pvname(proc->proc_name, vp->vers_num);
232 			printarglist(proc, "result", RQSTP, "struct svc_req *");
233 
234 			f_print(fout, "{\n");
235 
236 			if (!mtflag) {
237 				f_print(fout, "\tstatic ");
238 				if ((!streq(proc->res_type, "void")) &&
239 				    (!streq(proc->res_type, "oneway")))
240 					return_type(proc);
241 				else
242 					f_print(fout, "char *");
243 				/* cannot have void type */
244 				f_print(fout, " result;\n");
245 			}
246 
247 			f_print(fout, "\n\t/*\n\t * insert server code "
248 						"here\n\t */\n\n");
249 
250 			if (!mtflag)
251 				if (!streq(proc->res_type, "void"))
252 					f_print(fout,
253 					    "\treturn (&result);\n}\n");
254 				else /* cast back to void * */
255 					f_print(fout, "\treturn((void *) "
256 					    "&result);\n}\n");
257 			else
258 				f_print(fout, "\treturn (retval);\n}\n");
259 		}
260 		/* put in sample freeing routine */
261 		if (mtflag) {
262 			f_print(fout, "\nint\n");
263 			pvname(def->def_name, vp->vers_num);
264 			if (Cflag)
265 				f_print(fout, "_freeresult(SVCXPRT *transp,"
266 					" xdrproc_t xdr_result,"
267 					" caddr_t result)\n");
268 			else {
269 				f_print(fout, "_freeresult(transp, xdr_result,"
270 					" result)\n");
271 				f_print(fout, "\tSVCXPRT *transp;\n");
272 				f_print(fout, "\txdrproc_t xdr_result;\n");
273 				f_print(fout, "\tcaddr_t result;\n");
274 			}
275 			f_print(fout, "{\n"
276 				"\t(void) xdr_free(xdr_result, result);\n"
277 				"\n\t/*\n\t * Insert additional freeing"
278 				" code here, if needed\n\t */\n"
279 				"\n\n\treturn (TRUE);\n}\n");
280 		}
281 	}
282 }
283 
284 static void
285 return_type(proc_list *plist)
286 {
287 	ptype(plist->res_prefix, plist->res_type, 1);
288 }
289 
290 void
291 add_sample_msg(void)
292 {
293 	f_print(fout, "/*\n");
294 	f_print(fout, " * This is sample code generated by rpcgen.\n");
295 	f_print(fout, " * These are only templates and you can use them\n");
296 	f_print(fout, " * as a guideline for developing your own functions.\n");
297 	f_print(fout, " */\n\n");
298 }
299 
300 void
301 write_sample_clnt_main(void)
302 {
303 	list *l;
304 	definition *def;
305 	version_list *vp;
306 
307 	f_print(fout, "\n\n");
308 	if (Cflag)
309 		f_print(fout, "int\nmain(int argc, char *argv[])\n{\n");
310 	else
311 		f_print(fout, "int\nmain(argc, argv)\n\tint argc;\n"
312 			"\tchar *argv[];\n{\n");
313 
314 	f_print(fout, "\tchar *host;");
315 	f_print(fout, "\n\n\tif (argc < 2) {");
316 	f_print(fout, "\n\t\tprintf(\"usage:  %%s server_host\\n\","
317 			" argv[0]);\n");
318 	f_print(fout, "\t\texit(1);\n\t}");
319 	f_print(fout, "\n\thost = argv[1];\n");
320 
321 	for (l = defined; l != NULL; l = l->next) {
322 		def = l->val;
323 		if (def->def_kind != DEF_PROGRAM)
324 			continue;
325 		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
326 			f_print(fout, "\t");
327 			pvname(def->def_name, vp->vers_num);
328 			f_print(fout, "(host);\n");
329 		}
330 	}
331 	f_print(fout, "}\n");
332 }
333