xref: /freebsd/usr.bin/rpcgen/rpc_sample.c (revision ae83180158c4c937f170e31eff311b18c0286a93)
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 /* #pragma ident	"@(#)rpc_sample.c	1.9	94/04/25 SMI" */
31 
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 
35 /*
36  * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
37  * Copyright (C) 1987, Sun Microsystems, Inc.
38  */
39 
40 #include <stdio.h>
41 #include <string.h>
42 #include "rpc_parse.h"
43 #include "rpc_util.h"
44 
45 
46 static char RQSTP[] = "rqstp";
47 
48 extern void printarglist( proc_list *, char *, char *, char *);
49 static void write_sample_client( char *, version_list * );
50 static void write_sample_server( definition * );
51 static void return_type( proc_list * );
52 
53 void
54 write_sample_svc(def)
55      definition *def;
56 {
57 
58 	if (def->def_kind != DEF_PROGRAM)
59 	  return;
60 	write_sample_server(def);
61 }
62 
63 
64 int
65 write_sample_clnt(def)
66      definition *def;
67 {
68         version_list *vp;
69 	int count = 0;
70 
71 	if (def->def_kind != DEF_PROGRAM)
72 	  return(0);
73 	/* generate sample code for each version */
74 	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
75 	  write_sample_client(def->def_name, vp);
76 	  ++count;
77 	}
78 	return(count);
79 }
80 
81 
82 static void
83 write_sample_client(program_name, vp)
84      char *program_name;
85      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\t", ++i);
104 			ptype(proc->res_prefix, proc->res_type, 1);
105 			f_print(fout, "result_%d;\n", i);
106 		} else {
107 			ptype(proc->res_prefix, proc->res_type, 1);
108 			f_print(fout, " *result_%d;\n",++i);
109 		}
110 		/* print out declarations for arguments */
111 		if(proc->arg_num < 2 && !newstyle) {
112 			f_print(fout, "\t");
113 			if(!streq(proc->args.decls->decl.type, "void"))
114 				ptype(proc->args.decls->decl.prefix,
115 				      proc->args.decls->decl.type, 1);
116 			else
117 				f_print(fout, "char * "); /* cannot have "void" type */
118 			f_print(fout, " ");
119 			pvname(proc->proc_name, vp->vers_num);
120 			f_print(fout, "_arg;\n");
121 		} else if (!streq(proc->args.decls->decl.type, "void")) {
122 			for (l = proc->args.decls; l != NULL; l = l->next) {
123 				f_print(fout, "\t");
124 				ptype(l->decl.prefix, l->decl.type, 1);
125 				if (strcmp(l->decl.type,"string") == 1)
126 				    f_print(fout, " ");
127 				pvname(proc->proc_name, vp->vers_num);
128 				f_print(fout, "_%s;\n", l->decl.name);
129 			}
130 		}
131 	}
132 
133 	/* generate creation of client handle */
134 	f_print(fout, "\n#ifndef\tDEBUG\n");
135 	f_print(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
136 		program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
137 	f_print(fout, "\tif (clnt == (CLIENT *) NULL) {\n");
138 	f_print(fout, "\t\tclnt_pcreateerror(host);\n");
139 	f_print(fout, "\t\texit(1);\n\t}\n");
140 	f_print(fout, "#endif\t/* DEBUG */\n\n");
141 
142 	/* generate calls to procedures */
143 	i = 0;
144 	for (proc = vp->procs; proc != NULL; proc = proc->next) {
145 		if (mtflag)
146 			f_print(fout, "\tretval_%d = ",++i);
147 		else
148 			f_print(fout, "\tresult_%d = ",++i);
149 		pvname(proc->proc_name, vp->vers_num);
150 		if (proc->arg_num < 2 && !newstyle) {
151 			f_print(fout, "(");
152 			if(streq(proc->args.decls->decl.type, "void"))
153 				/* cast to void * */
154 				f_print(fout, "(void *)");
155 			f_print(fout, "&");
156 			pvname(proc->proc_name, vp->vers_num);
157 			if (mtflag)
158 				f_print(fout, "_arg, &result_%d, clnt);\n",
159 					i);
160 			else
161 				f_print(fout, "_arg, clnt);\n");
162 
163 		} else if (streq(proc->args.decls->decl.type, "void")) {
164 			if (mtflag)
165 				f_print(fout, "(&result_%d, clnt);\n", i);
166 			else
167 				f_print(fout, "(clnt);\n");
168 		}
169 		else {
170 			f_print(fout, "(");
171 			for (l = proc->args.decls;  l != NULL; l = l->next) {
172 				pvname(proc->proc_name, vp->vers_num);
173 				f_print(fout, "_%s, ", l->decl.name);
174 			}
175 			if (mtflag)
176 				f_print(fout, "&result_%d, ", i);
177 
178 			f_print(fout, "clnt);\n");
179 		}
180 		if (mtflag) {
181 			f_print(fout, "\tif (retval_%d != RPC_SUCCESS) {\n", i);
182 
183 		} else {
184 			f_print(fout, "\tif (result_%d == (", i);
185 			ptype(proc->res_prefix, proc->res_type, 1);
186 			f_print(fout, "*) NULL) {\n");
187 		}
188 		f_print(fout, "\t\tclnt_perror(clnt, \"call failed\");\n");
189 		f_print(fout, "\t}\n");
190 	}
191 
192 	f_print(fout, "#ifndef\tDEBUG\n");
193 	f_print(fout, "\tclnt_destroy(clnt);\n");
194 	f_print(fout, "#endif\t	/* DEBUG */\n");
195 	f_print(fout, "}\n");
196 }
197 
198 static void
199 write_sample_server(def)
200 	definition *def;
201 {
202 	version_list *vp;
203 	proc_list *proc;
204 
205 	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
206 		for (proc = vp->procs; proc != NULL; proc = proc->next) {
207 			f_print(fout, "\n");
208 			if (!mtflag) {
209 				return_type(proc);
210 				f_print(fout, "*\n");
211 			} else
212 				f_print(fout, "bool_t\n");
213 			if (Cflag || mtflag)
214 				pvname_svc(proc->proc_name, vp->vers_num);
215 			else
216 				pvname(proc->proc_name, vp->vers_num);
217 			printarglist(proc, "result", RQSTP, "struct svc_req *");
218 
219 			f_print(fout, "{\n");
220 			if (!mtflag) {
221 				f_print(fout, "\tstatic ");
222 				if(!streq(proc->res_type, "void"))
223 					return_type(proc);
224 				else
225 					f_print(fout, "char *");
226 				/* cannot have void type */
227 				f_print(fout, " result;\n");
228 			}
229 			else
230 				f_print(fout, "\tbool_t retval;\n");
231 			f_print(fout,
232 				"\n\t/*\n\t * insert server code here\n\t */\n\n");
233 
234 			if (!mtflag)
235 				if(!streq(proc->res_type, "void"))
236 					f_print(fout, "\treturn (&result);\n}\n");
237 				else /* cast back to void * */
238 					f_print(fout, "\treturn((void *) &result);\n}\n");
239 			else
240 				f_print(fout, "\treturn (retval);\n}\n");
241 		}
242 		/* put in sample freeing routine */
243 		if (mtflag) {
244 		f_print(fout, "\nint\n");
245 		pvname(def->def_name, vp->vers_num);
246 		if (Cflag)
247 			f_print(fout,"_freeresult(SVCXPRT *transp, xdrproc_t xdr_result, caddr_t result)\n");
248 		else {
249 			f_print(fout,"_freeresult(transp, xdr_result, result)\n");
250 			f_print(fout,"\tSVCXPRT *transp;\n");
251 			f_print(fout,"\txdrproc_t xdr_result;\n");
252 			f_print(fout,"\tcaddr_t result;\n");
253 		}
254 		f_print(fout, "{\n");
255 		f_print(fout, "\t(void) xdr_free(xdr_result, result);\n");
256 		f_print(fout,
257 			"\n\t/*\n\t * Insert additional freeing code here, if needed\n\t */\n");
258 		f_print(fout, "\n}\n");
259 
260 
261 	}
262 	}
263 }
264 
265 
266 
267 static void
268 return_type(plist)
269 	proc_list *plist;
270 {
271   ptype(plist->res_prefix, plist->res_type, 1);
272 }
273 
274 void
275 add_sample_msg()
276 {
277 	f_print(fout, "/*\n");
278 	f_print(fout, " * This is sample code generated by rpcgen.\n");
279 	f_print(fout, " * These are only templates and you can use them\n");
280 	f_print(fout, " * as a guideline for developing your own functions.\n");
281 	f_print(fout, " */\n\n");
282 }
283 
284 void
285 write_sample_clnt_main()
286 {
287 	list *l;
288 	definition *def;
289 	version_list *vp;
290 
291 	f_print(fout, "\n\n");
292 	if(Cflag)
293 		f_print(fout,"main(int argc, char *argv[])\n{\n");
294 	else
295 		f_print(fout, "main(argc, argv)\n\tint argc;\n\tchar *argv[];\n{\n");
296 
297 	f_print(fout, "\tchar *host;");
298 	f_print(fout, "\n\n\tif (argc < 2) {");
299 	f_print(fout, "\n\t\tprintf(\"usage:  %%s server_host\\n\", argv[0]);\n");
300 	f_print(fout, "\t\texit(1);\n\t}");
301 	f_print(fout, "\n\thost = argv[1];\n");
302 
303 	for (l = defined; l != NULL; l = l->next) {
304 		def = l->val;
305 		if (def->def_kind != DEF_PROGRAM) {
306 			continue;
307 		}
308 		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
309 		        f_print(fout, "\t");
310 			pvname(def->def_name, vp->vers_num);
311 			f_print(fout, "(host);\n");
312 		}
313 	}
314 	f_print(fout, "}\n");
315 }
316