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
42static char RQSTP[] = "rqstp";
43
44static void write_sample_client(const char *, version_list * );
45static void write_sample_server( definition * );
46static void return_type( proc_list * );
47
48void
49write_sample_svc(definition *def)
50{
51
52	if (def->def_kind != DEF_PROGRAM)
53	  return;
54	write_sample_server(def);
55}
56
57
58int
59write_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
75static void
76write_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
186static void
187write_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
244static void
245return_type(proc_list *plist)
246{
247  ptype(plist->res_prefix, plist->res_type, 1);
248}
249
250void
251add_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
260void
261write_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