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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_clntout.c,v 1.14 2009/10/27 23:59:42 deraadt Exp $	*/
/*	$NetBSD: rpc_clntout.c,v 1.4 1995/06/11 21:49:52 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_clntout.c, Client-stub outputter for the RPC protocol compiler
 * Copyright (C) 1987, Sun Microsytsems, Inc.
 */
#include <stdio.h>
#include <string.h>
#include <rpc/types.h>
#include "rpc_parse.h"
#include "rpc_util.h"

static void write_program(definition *);
static void printbody(proc_list *);

#define DEFAULT_TIMEOUT 25	/* in seconds */
static char RESULT[] = "clnt_res";


void
write_stubs()
{
	list *l;
	definition *def;

	fprintf(fout,
		"\n/* Default timeout can be changed using clnt_control() */\n");
	fprintf(fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
		DEFAULT_TIMEOUT);
	for (l = defined; l != NULL; l = l->next) {
		def = (definition *) l->val;
		if (def->def_kind == DEF_PROGRAM) {
			write_program(def);
		}
	}
}

static void
write_program(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");
			ptype(proc->res_prefix, proc->res_type, 1);
			fprintf(fout, "*\n");
			pvname(proc->proc_name, vp->vers_num);
			printarglist(proc, "clnt", "CLIENT *");
			fprintf(fout, "{\n");
			printbody(proc);
			fprintf(fout, "}\n");
		}
	}
}

/*
 * Writes out declarations of procedure's argument list.
 * In either ANSI C style, in one of old rpcgen style (pass by reference),
 * or new rpcgen style (multiple arguments, pass by value);
 */

/* sample addargname = "clnt"; sample addargtype = "CLIENT * " */

void printarglist(proc, addargname, addargtype)
	proc_list *proc;
	char *addargname, *addargtype;
{
	decl_list *l;

	if (!newstyle) {	/* old style: always pass argument by reference */
		if (Cflag) {			/* C++ style heading */
			fprintf(fout, "(");
			ptype(proc->args.decls->decl.prefix,
			    proc->args.decls->decl.type, 1);
			fprintf(fout, "*argp, %s%s)\n", addargtype, addargname);
		} else {
			fprintf(fout, "(argp, %s)\n", addargname);
			fprintf(fout, "\t");
			ptype(proc->args.decls->decl.prefix,
			    proc->args.decls->decl.type, 1);
			fprintf(fout, "*argp;\n");
		}
	} else if (streq(proc->args.decls->decl.type, "void")) {
		/* newstyle, 0 argument */
		if (Cflag)
			fprintf(fout, "(%s%s)\n", addargtype, addargname);
		else
			fprintf(fout, "(%s)\n", addargname);
	} else {
		/* new style, 1 or multiple arguments */
		if (!Cflag) {
			fprintf(fout, "(");
			for (l = proc->args.decls; l != NULL; l = l->next)
				fprintf(fout, "%s, ", l->decl.name);
			fprintf(fout, "%s)\n", addargname);
			for (l = proc->args.decls; l != NULL; l = l->next)
				pdeclaration(proc->args.argname, &l->decl, 1, ";\n");
		} else {	/* C++ style header */
			fprintf(fout, "(");
			for (l = proc->args.decls; l != NULL; l = l->next)
				pdeclaration(proc->args.argname, &l->decl, 0, ", ");
			fprintf(fout, " %s%s)\n", addargtype, addargname);
		}
	}

	if (!Cflag)
		fprintf(fout, "\t%s%s;\n", addargtype, addargname);
}

static char *
ampr(char *type)
{
	if (isvectordef(type, REL_ALIAS)) {
		return ("");
	} else {
		return ("&");
	}
}

static void
printbody(proc)
	proc_list *proc;
{
	decl_list *l;
	bool_t args2 = (proc->arg_num > 1);

	/*
	 * For new style with multiple arguments, need a structure in which
	 * to stuff the arguments.
	 */
	if (newstyle && args2) {
		fprintf(fout, "\t%s", proc->args.argname);
		fprintf(fout, " arg;\n");
	}
	fprintf(fout, "\tstatic ");
	if (streq(proc->res_type, "void")) {
		fprintf(fout, "char ");
	} else {
		ptype(proc->res_prefix, proc->res_type, 0);
	}
	fprintf(fout, "%s;\n",RESULT);
	fprintf(fout, "\n");
	fprintf(fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n",
	    ampr(proc->res_type), RESULT, RESULT);
	if (newstyle && !args2 && (streq(proc->args.decls->decl.type, "void"))) {
		/* newstyle, 0 arguments */
		fprintf(fout,
		    "\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name);
		fprintf(fout,
		    ", NULL, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
		    stringfix(proc->res_type), ampr(proc->res_type), RESULT);
	} else if (newstyle && args2) {
		/* newstyle, multiple arguments:  stuff arguments into structure */
		for (l = proc->args.decls;  l != NULL; l = l->next) {
			fprintf(fout, "\targ.%s = %s;\n",
			    l->decl.name, l->decl.name);
		}
		fprintf(fout,
		    "\tif (clnt_call(clnt, %s, xdr_%s", proc->proc_name,
		    proc->args.argname);
		fprintf(fout,
		    ", &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
		    stringfix(proc->res_type),
		    ampr(proc->res_type), RESULT);
	} else {  /* single argument, new or old style */
		fprintf(fout,
		    "\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, "
		    "%s%s, TIMEOUT) != RPC_SUCCESS) {\n",
		    proc->proc_name,
		    stringfix(proc->args.decls->decl.type),
		    (newstyle ? "&" : ""),
		    (newstyle ? proc->args.decls->decl.name : "argp"),
		    stringfix(proc->res_type),
		    ampr(proc->res_type),RESULT);
	}
	fprintf(fout, "\t\treturn (NULL);\n");
	fprintf(fout, "\t}\n");
	if (streq(proc->res_type, "void")) {
		fprintf(fout, "\treturn ((void *)%s%s);\n",
		    ampr(proc->res_type),RESULT);
	} else {
		fprintf(fout, "\treturn (%s%s);\n", ampr(proc->res_type),RESULT);
	}
}