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rcsid[] and sccsid[] and copyright[] are essentially unmaintained (and
unmaintainable).  these days, people use source.  these id's do not provide
any benefit, and do hurt the small install media
(the 33,000 line diff is essentially mechanical)
ok with the idea millert, ok dms

/*	$OpenBSD: rpc_sample.c,v 1.16 2009/10/27 23:59:42 deraadt Exp $	*/
/*	$NetBSD: rpc_sample.c,v 1.2 1995/06/11 21:50:01 pk Exp $	*/
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

/*
 * rpc_sample.c, Sample client-server code outputter for the RPC protocol compiler
 */

#include <sys/cdefs.h>
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"

static char RQSTP[] = "rqstp";

static void write_sample_client(char *, version_list *);
static void write_sample_server(definition *);
static void return_type(proc_list *);

void
write_sample_svc(def)
	definition *def;
{

	if (def->def_kind != DEF_PROGRAM)
		return;
	write_sample_server(def);
}


int
write_sample_clnt(def)
	definition *def;
{
	version_list *vp;
	int count = 0;

	if (def->def_kind != DEF_PROGRAM)
		return(0);
	/* generate sample code for each version */
	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		write_sample_client(def->def_name, vp);
		++count;
	}
	return(count);
}


static void
write_sample_client(program_name, vp)
	char *program_name;
	version_list *vp;
{
	proc_list *proc;
	int i;
	decl_list *l;

	fprintf(fout, "\n\nvoid\n");
	pvname(program_name, vp->vers_num);
	if (Cflag)
		fprintf(fout,"(char *host)\n{\n");
	else
		fprintf(fout, "(host)\nchar *host;\n{\n");
	fprintf(fout, "\tCLIENT *clnt;\n");

	i = 0;
	for (proc = vp->procs; proc != NULL; proc = proc->next) {
		fprintf(fout, "\t");
		ptype(proc->res_prefix, proc->res_type, 1);
		fprintf(fout, " *result_%d;\n",++i);
		/* print out declarations for arguments */
		if (proc->arg_num < 2 && !newstyle) {
			fprintf(fout, "\t");
			if (!streq(proc->args.decls->decl.type, "void"))
				ptype(proc->args.decls->decl.prefix,
				    proc->args.decls->decl.type, 1);
			else
				fprintf(fout, "char *"); /* cannot have "void" type */
			fprintf(fout, " ");
			pvname(proc->proc_name, vp->vers_num);
			fprintf(fout, "_arg;\n");
		} else if (!streq(proc->args.decls->decl.type, "void")) {
			for (l = proc->args.decls; l != NULL; l = l->next) {
				fprintf(fout, "\t");
				ptype(l->decl.prefix, l->decl.type, 1);
				fprintf(fout, " ");
				pvname(proc->proc_name, vp->vers_num);
				fprintf(fout, "_%s;\n", l->decl.name);
		/*		pdeclaration(proc->args.argname, &l->decl, 1, ";\n");*/
			}
		}
	}

	/* generate creation of client handle */
	fprintf(fout, "\tclnt = clnt_create(host, %s, %s, \"%s\");\n",
	    program_name, vp->vers_name, tirpcflag? "netpath" : "udp");
	fprintf(fout, "\tif (clnt == NULL) {\n");
	fprintf(fout, "\t\tclnt_pcreateerror(host);\n");
	fprintf(fout, "\t\texit(1);\n\t}\n");

	/* generate calls to procedures */
	i = 0;
	for (proc = vp->procs; proc != NULL; proc = proc->next) {
		fprintf(fout, "\tresult_%d = ",++i);
		pvname(proc->proc_name, vp->vers_num);
		if (proc->arg_num < 2 && !newstyle) {
			fprintf(fout, "(");
			if (streq(proc->args.decls->decl.type, "void"))
				fprintf(fout, "(void*)");
			fprintf(fout, "&");
			pvname(proc->proc_name, vp->vers_num);
			fprintf(fout, "_arg, clnt);\n");
		} else if (streq(proc->args.decls->decl.type, "void")) {
			fprintf(fout, "(clnt);\n");
		} else {
			fprintf(fout, "(");
			for (l = proc->args.decls;	l != NULL; l = l->next) {
				pvname(proc->proc_name, vp->vers_num);
				fprintf(fout, "_%s, ", l->decl.name);
			}
			fprintf(fout, "clnt);\n");
		}
		fprintf(fout, "\tif (result_%d == NULL) {\n", i);
		fprintf(fout, "\t\tclnt_perror(clnt, \"call failed:\");\n");
		fprintf(fout, "\t}\n");
	}

	fprintf(fout, "\tclnt_destroy(clnt);\n");
	fprintf(fout, "}\n");
}

static void
write_sample_server(def)
	definition *def;
{
	version_list *vp;
	proc_list *proc;

	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
		for (proc = vp->procs; proc != NULL; proc = proc->next) {
			fprintf(fout, "\n");
/*			if (Cflag)
				fprintf(fout, "extern \"C\"{\n");
*/
			return_type(proc);
			fprintf(fout, "* \n");
			pvname_svc(proc->proc_name, vp->vers_num);
			printarglist(proc, RQSTP, "struct svc_req *");

			fprintf(fout, "{\n");
			fprintf(fout, "\n\tstatic ");
			if (!streq(proc->res_type, "void"))
				return_type(proc);
			else
				fprintf(fout, "char*");  /* cannot have void type */
			fprintf(fout, " result;\n");
			fprintf(fout,
			    "\n\t/*\n\t * insert server code here\n\t */\n\n");
			if (!streq(proc->res_type, "void"))
				fprintf(fout, "\treturn(&result);\n}\n");
			else  /* cast back to void * */
				fprintf(fout, "\treturn((void*) &result);\n}\n");
/*			if (Cflag)
				fprintf(fout, "}\n");
*/
		}
	}
}

static void
return_type(plist)
	proc_list *plist;
{
	ptype(plist->res_prefix, plist->res_type, 1);
}

void
add_sample_msg(void)
{
	fprintf(fout, "/*\n");
	fprintf(fout, " * This is sample code generated by rpcgen.\n");
	fprintf(fout, " * These are only templates and you can use them\n");
	fprintf(fout, " * as a guideline for developing your own functions.\n");
	fprintf(fout, " */\n\n");
}

void
write_sample_clnt_main()
{
	list *l;
	definition *def;
	version_list *vp;

	fprintf(fout, "\n\n");
	if (Cflag)
		fprintf(fout,"main(int argc, char *argv[])\n{\n");
	else
		fprintf(fout, "main(argc, argv)\nint argc;\nchar *argv[];\n{\n");

	fprintf(fout, "\tchar *host;");
	fprintf(fout, "\n\n\tif (argc < 2) {");
	fprintf(fout, "\n\t\tprintf(\"usage: %%s server_host\\n\", argv[0]);\n");
	fprintf(fout, "\t\texit(1);\n\t}");
	fprintf(fout, "\n\thost = argv[1];\n");

	for (l = defined; l != NULL; l = l->next) {
		def = l->val;
		if (def->def_kind != DEF_PROGRAM)
			continue;
		for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
			fprintf(fout, "\t");
			pvname(def->def_name, vp->vers_num);
			fprintf(fout, "(host);\n");
		}
	}
	fprintf(fout, "}\n");
}