/*
* rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
* Copyright (c) 2010, Oracle America, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the "Oracle America, Inc." nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include "rpc/types.h"
#include "rpc_parse.h"
#include "rpc_util.h"
#include "proto.h"
#define DEFAULT_TIMEOUT 25 /* in seconds */
static const char RESULT[] = "clnt_res";
static void write_program (definition * def);
static void printbody (proc_list * proc);
static const char *ampr (const char *type);
static void printbody (proc_list * proc);
void
write_stubs (void)
{
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 (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 (mtflag == 0)
{
ptype (proc->res_prefix, proc->res_type, 1);
fprintf (fout, "*\n");
pvname (proc->proc_name, vp->vers_num);
printarglist (proc, RESULT, "clnt", "CLIENT *");
}
else
{
fprintf (fout, "enum clnt_stat \n");
pvname (proc->proc_name, vp->vers_num);
printarglist (proc, RESULT, "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_list * proc, const char *result,
const char *addargname, const char *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);
if (mtflag)
{/* Generate result field */
fprintf (fout, "*argp, ");
ptype(proc->res_prefix, proc->res_type, 1);
fprintf (fout, "*%s, %s%s)\n", result, addargtype, addargname);
}
else
fprintf (fout, "*argp, %s%s)\n", addargtype, addargname);
}
else
{
if (!mtflag)
fprintf (fout, "(argp, %s)\n", addargname);
else
fprintf (fout, "(argp, %s, %s)\n", result, addargname);
fprintf (fout, "\t");
ptype (proc->args.decls->decl.prefix,
proc->args.decls->decl.type, 1);
fprintf (fout, "*argp;\n");
if (mtflag)
{
fprintf (fout, "\t");
ptype (proc->res_prefix, proc->res_type, 1);
fprintf (fout, "*%s;\n", result);
}
}
}
else if (streq (proc->args.decls->decl.type, "void"))
{
/* newstyle, 0 argument */
if (mtflag)
{
fprintf (fout, "(");
if (Cflag)
{
ptype(proc->res_prefix, proc->res_type, 1);
fprintf (fout, "*%s, %s%s)\n", result, addargtype, addargname);
}
else
fprintf (fout, "(%s)\n", addargname);
}
else 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);
if (mtflag)
fprintf (fout, "%s, ", result);
fprintf (fout, "%s)\n", addargname);
for (l = proc->args.decls; l != NULL; l = l->next)
{
pdeclaration (proc->args.argname, &l->decl, 1, ";\n");
}
if (mtflag)
{
fprintf (fout, "\t");
ptype (proc->res_prefix, proc->res_type, 1);
fprintf (fout, "*%s;\n", result);
}
}
else
{ /* C++ style header */
fprintf (fout, "(");
for (l = proc->args.decls; l != NULL; l = l->next)
{
pdeclaration (proc->args.argname, &l->decl, 0, ", ");
}
if (mtflag)
{
ptype (proc->res_prefix, proc->res_type, 1);
fprintf (fout, "*%s, ", result);
}
fprintf (fout, " %s%s)\n", addargtype, addargname);
}
}
if (!Cflag)
fprintf (fout, "\t%s%s;\n", addargtype, addargname);
}
static
const char *
ampr (const 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);
/* int i; */
/* 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");
}
if (!mtflag)
{
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 */
if (mtflag)
fprintf (fout, "\t return ");
else
fprintf (fout, "\t if ");
fprintf (fout,
"(clnt_call (clnt, %s, (xdrproc_t) xdr_void, ", proc->proc_name);
fprintf (fout,
"(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
RESULT);
if (mtflag)
fprintf (fout, "\n\t\tTIMEOUT));\n\n");
else
fprintf (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)
{
fprintf (fout, "\targ.%s = %s;\n",
l->decl.name, l->decl.name);
}
if (mtflag)
fprintf (fout, "\treturn ");
else
fprintf (fout, "\tif ");
fprintf (fout,
"(clnt_call (clnt, %s, (xdrproc_t) xdr_%s", proc->proc_name,
proc->args.argname);
fprintf (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)
fprintf (fout, "\n\t\tTIMEOUT));\n");
else
fprintf (fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
}
else
{ /* single argument, new or old style */
if (!mtflag)
fprintf (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
fprintf(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)
{
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);
}
}
}