OpenSolaris_b135/cmd/rpcgen/rpc_clntout.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
/*
* rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
*/
#include <stdio.h>
#include <string.h>
#include <rpc/types.h>
#include "rpc_parse.h"
#include "rpc_util.h"
extern void pdeclaration(char *, declaration *, int, char *);
extern void printarglist(proc_list *, char *, char *, char *);
static void write_program(definition *);
static void printbody(proc_list *);
static char RESULT[] = "clnt_res";
#define DEFAULT_TIMEOUT 25 /* in seconds */
void
write_stubs(void)
{
list *l;
definition *def;
f_print(fout,
"\n/* Default timeout can be changed using clnt_control() */\n");
f_print(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(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) {
f_print(fout, "\n");
if (mtflag == 0) {
ptype(proc->res_prefix, proc->res_type, 1);
f_print(fout, "*\n");
pvname(proc->proc_name, vp->vers_num);
printarglist(proc, RESULT, "clnt", "CLIENT *");
} else {
f_print(fout, "enum clnt_stat \n");
pvname(proc->proc_name, vp->vers_num);
printarglist(proc, RESULT, "clnt", "CLIENT *");
}
f_print(fout, "{\n");
printbody(proc);
f_print(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_list *proc, char *result, char *addargname, char *addargtype)
{
bool_t oneway = streq(proc->res_type, "oneway");
decl_list *l;
if (!newstyle) {
/* old style: always pass argument by reference */
if (Cflag) { /* C++ style heading */
f_print(fout, "(");
ptype(proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 1);
if (mtflag) { /* Generate result field */
f_print(fout, "*argp, ");
if (!oneway) {
ptype(proc->res_prefix,
proc->res_type, 1);
f_print(fout, "*%s, ", result);
}
f_print(fout, "%s%s)\n",
addargtype, addargname);
} else
f_print(fout, "*argp, %s%s)\n",
addargtype, addargname);
} else {
if (!mtflag)
f_print(fout, "(argp, %s)\n", addargname);
else {
f_print(fout, "(argp, ");
if (!oneway) {
f_print(fout, "%s, ",
result);
}
f_print(fout, "%s)\n",
addargname);
}
f_print(fout, "\t");
ptype(proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 1);
f_print(fout, "*argp;\n");
if (mtflag && !oneway) {
f_print(fout, "\t");
ptype(proc->res_prefix, proc->res_type, 1);
f_print(fout, "*%s;\n", result);
}
}
} else if (streq(proc->args.decls->decl.type, "void")) {
/* newstyle, 0 argument */
if (mtflag) {
f_print(fout, "(");
if (Cflag) {
if (!oneway) {
ptype(proc->res_prefix,
proc->res_type, 1);
f_print(fout, "*%s, ", result);
}
f_print(fout, "%s%s)\n",
addargtype, addargname);
} else
f_print(fout, "(%s)\n", addargname);
} else
if (Cflag)
f_print(fout, "(%s%s)\n", addargtype, addargname);
else
f_print(fout, "(%s)\n", addargname);
} else {
/* new style, 1 or multiple arguments */
if (!Cflag) {
f_print(fout, "(");
for (l = proc->args.decls; l != NULL; l = l->next)
f_print(fout, "%s, ", l->decl.name);
if (mtflag && !oneway)
f_print(fout, "%s, ", result);
f_print(fout, "%s)\n", addargname);
for (l = proc->args.decls; l != NULL; l = l->next) {
pdeclaration(proc->args.argname,
&l->decl, 1, ";\n");
}
if (mtflag && !oneway) {
f_print(fout, "\t");
ptype(proc->res_prefix, proc->res_type, 1);
f_print(fout, "*%s;\n", result);
}
} else { /* C++ style header */
f_print(fout, "(");
for (l = proc->args.decls; l != NULL; l = l->next) {
pdeclaration(proc->args.argname, &l->decl, 0,
", ");
}
if (mtflag && !oneway) {
ptype(proc->res_prefix, proc->res_type, 1);
f_print(fout, "*%s, ", result);
}
f_print(fout, "%s%s)\n", addargtype, addargname);
}
}
if (!Cflag)
f_print(fout, "\t%s%s;\n", addargtype, addargname);
}
static char *
ampr(char *type)
{
if (isvectordef(type, REL_ALIAS)) {
return ("");
} else {
return ("&");
}
}
static void
printbody(proc_list *proc)
{
decl_list *l;
bool_t args2 = (proc->arg_num > 1);
bool_t oneway = streq(proc->res_type, "oneway");
/*
* For new style with multiple arguments, need a structure in which
* to stuff the arguments.
*/
if (newstyle && args2) {
f_print(fout, "\t%s", proc->args.argname);
f_print(fout, " arg;\n");
}
if (!oneway) {
if (!mtflag) {
f_print(fout, "\tstatic ");
if (streq(proc->res_type, "void")) {
f_print(fout, "char ");
} else {
ptype(proc->res_prefix, proc->res_type, 0);
}
f_print(fout, "%s;\n", RESULT);
f_print(fout, "\n");
f_print(fout,
"\t(void) memset(%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 */
if (mtflag)
f_print(fout, "\t return ");
else
f_print(fout, "\t if ");
f_print(fout,
"(clnt_call(clnt, %s,\n\t\t(xdrproc_t)xdr_void, ",
proc->proc_name);
f_print(fout,
"NULL,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s,",
stringfix(proc->res_type),
(mtflag)?"":ampr(proc->res_type),
RESULT);
if (mtflag)
f_print(fout, "\n\t\tTIMEOUT));\n");
else
f_print(fout,
"\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
} else if (newstyle && args2) {
/*
* Newstyle, multiple arguments
* stuff arguments into structure
*/
for (l = proc->args.decls; l != NULL; l = l->next) {
f_print(fout, "\targ.%s = %s;\n",
l->decl.name, l->decl.name);
}
if (mtflag)
f_print(fout, "\treturn ");
else
f_print(fout, "\tif ");
f_print(fout,
"(clnt_call(clnt, %s,\n\t\t(xdrproc_t)xdr_%s",
proc->proc_name, proc->args.argname);
f_print(fout,
", (caddr_t)&arg,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s,",
stringfix(proc->res_type),
(mtflag)?"":ampr(proc->res_type),
RESULT);
if (mtflag)
f_print(fout, "\n\t\tTIMEOUT));\n");
else
f_print(fout,
"\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
} else { /* single argument, new or old style */
if (!mtflag)
f_print(fout,
"\tif (clnt_call(clnt, "
"%s,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s,\n\t\tTIMEOUT) != "
"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);
else
f_print(fout,
"\treturn (clnt_call(clnt, "
"%s,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s,\n\t\tTIMEOUT));\n",
proc->proc_name,
stringfix(proc->args.decls->decl.type),
(newstyle ? "&" : ""),
(newstyle ?
proc->args.decls->decl.name :
"argp"),
stringfix(proc->res_type), "",
RESULT);
}
if (!mtflag) {
f_print(fout, "\t\treturn (NULL);\n");
f_print(fout, "\t}\n");
if (streq(proc->res_type, "void")) {
f_print(fout, "\treturn ((void *)%s%s);\n",
ampr(proc->res_type), RESULT);
} else {
f_print(fout, "\treturn (%s%s);\n",
ampr(proc->res_type), RESULT);
}
}
} else {
/* oneway call */
if (!mtflag) {
f_print(fout, "\tstatic enum clnt_stat ");
f_print(fout, "%s;\n", RESULT);
f_print(fout, "\n");
f_print(fout,
"\t(void) memset(&%s, 0, sizeof (%s));\n",
RESULT, RESULT);
}
if (newstyle && !args2 &&
(streq(proc->args.decls->decl.type, "void"))) {
/* newstyle, 0 arguments */
if (mtflag)
f_print(fout, "\t return (");
else
f_print(fout, "\t if ((%s = ", RESULT);
f_print(fout,
"clnt_send(clnt, %s,\n\t\t(xdrproc_t)xdr_void, ",
proc->proc_name);
f_print(fout, "NULL)");
if (mtflag)
f_print(fout, ");\n");
else
f_print(fout, ") != RPC_SUCCESS) {\n");
} else if (newstyle && args2) {
/*
* Newstyle, multiple arguments
* stuff arguments into structure
*/
for (l = proc->args.decls; l != NULL; l = l->next) {
f_print(fout, "\targ.%s = %s;\n",
l->decl.name, l->decl.name);
}
if (mtflag)
f_print(fout, "\treturn (");
else
f_print(fout, "\tif ((%s =", RESULT);
f_print(fout,
"clnt_send(clnt, %s,\n\t\t(xdrproc_t)xdr_%s",
proc->proc_name, proc->args.argname);
f_print(fout,
", (caddr_t)&arg)");
if (mtflag)
f_print(fout, ");\n");
else
f_print(fout, ") != RPC_SUCCESS) {\n");
} else { /* single argument, new or old style */
if (!mtflag)
f_print(fout,
"\tif ((%s = clnt_send(clnt, "
"%s,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s)) != RPC_SUCCESS) {\n",
RESULT,
proc->proc_name,
stringfix(proc->args.decls->decl.type),
(newstyle ? "&" : ""),
(newstyle ?
proc->args.decls->decl.name :
"argp"));
else
f_print(fout,
"\treturn (clnt_send(clnt, "
"%s,\n\t\t(xdrproc_t)xdr_%s, "
"(caddr_t)%s%s));\n",
proc->proc_name,
stringfix(proc->args.decls->decl.type),
(newstyle ? "&" : ""),
(newstyle ?
proc->args.decls->decl.name :
"argp"));
}
if (!mtflag) {
f_print(fout, "\t\treturn (NULL);\n");
f_print(fout, "\t}\n");
f_print(fout, "\treturn ((void *)&%s);\n",
RESULT);
}
}
}