OpenBSD-4.6/usr.bin/rpcgen/rpc_clntout.c
/* $OpenBSD: rpc_clntout.c,v 1.13 2007/10/03 14:35:48 weingart 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
*/
#ifndef lint
static const char sccsid[] = "@(#)rpc_clntout.c 1.11 89/02/22 (C) 1987 SMI";
#endif
/*
* 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);
}
}