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334 lines
9.2 KiB
C
334 lines
9.2 KiB
C
/*
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* rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <rpc/types.h>
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#include "rpc_parse.h"
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#include "rpc_util.h"
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#include "proto.h"
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#define DEFAULT_TIMEOUT 25 /* in seconds */
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static const char RESULT[] = "clnt_res";
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static void write_program (definition * def);
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static void printbody (proc_list * proc);
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static const char *ampr (const char *type);
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static void printbody (proc_list * proc);
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void
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write_stubs (void)
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{
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list *l;
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definition *def;
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fprintf (fout,
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"\n/* Default timeout can be changed using clnt_control() */\n");
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fprintf (fout, "static struct timeval TIMEOUT = { %d, 0 };\n",
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DEFAULT_TIMEOUT);
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for (l = defined; l != NULL; l = l->next)
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{
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def = (definition *) l->val;
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if (def->def_kind == DEF_PROGRAM)
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{
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write_program (def);
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}
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}
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}
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static void
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write_program (definition * def)
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{
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version_list *vp;
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proc_list *proc;
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for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
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{
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for (proc = vp->procs; proc != NULL; proc = proc->next)
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{
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fprintf (fout, "\n");
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if (mtflag == 0)
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{
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ptype (proc->res_prefix, proc->res_type, 1);
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fprintf (fout, "*\n");
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pvname (proc->proc_name, vp->vers_num);
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printarglist (proc, RESULT, "clnt", "CLIENT *");
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}
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else
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{
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fprintf (fout, "enum clnt_stat \n");
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pvname (proc->proc_name, vp->vers_num);
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printarglist (proc, RESULT, "clnt", "CLIENT *");
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}
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fprintf (fout, "{\n");
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printbody (proc);
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fprintf (fout, "}\n");
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}
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}
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}
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/* Writes out declarations of procedure's argument list.
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In either ANSI C style, in one of old rpcgen style (pass by reference),
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or new rpcgen style (multiple arguments, pass by value);
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*/
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/* sample addargname = "clnt"; sample addargtype = "CLIENT * " */
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void
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printarglist (proc_list * proc, const char *result,
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const char *addargname, const char *addargtype)
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{
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decl_list *l;
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if (!newstyle)
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{ /* old style: always pass argument by reference */
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if (Cflag)
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{ /* C++ style heading */
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fprintf (fout, "(");
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ptype (proc->args.decls->decl.prefix,
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proc->args.decls->decl.type, 1);
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if (mtflag)
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{/* Generate result field */
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fprintf (fout, "*argp, ");
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ptype(proc->res_prefix, proc->res_type, 1);
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fprintf (fout, "*%s, %s%s)\n", result, addargtype, addargname);
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}
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else
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fprintf (fout, "*argp, %s%s)\n", addargtype, addargname);
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}
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else
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{
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if (!mtflag)
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fprintf (fout, "(argp, %s)\n", addargname);
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else
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fprintf (fout, "(argp, %s, %s)\n", result, addargname);
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fprintf (fout, "\t");
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ptype (proc->args.decls->decl.prefix,
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proc->args.decls->decl.type, 1);
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fprintf (fout, "*argp;\n");
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if (mtflag)
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{
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fprintf (fout, "\t");
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ptype (proc->res_prefix, proc->res_type, 1);
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fprintf (fout, "*%s;\n", result);
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}
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}
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}
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else if (streq (proc->args.decls->decl.type, "void"))
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{
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/* newstyle, 0 argument */
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if (mtflag)
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{
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fprintf (fout, "(");
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if (Cflag)
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{
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ptype(proc->res_prefix, proc->res_type, 1);
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fprintf (fout, "*%s, %s%s)\n", result, addargtype, addargname);
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}
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else
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fprintf (fout, "(%s)\n", addargname);
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}
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else if (Cflag)
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fprintf (fout, "(%s%s)\n", addargtype, addargname);
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else
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fprintf (fout, "(%s)\n", addargname);
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}
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else
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{
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/* new style, 1 or multiple arguments */
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if (!Cflag)
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{
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fprintf (fout, "(");
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for (l = proc->args.decls; l != NULL; l = l->next)
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fprintf (fout, "%s, ", l->decl.name);
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if (mtflag)
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fprintf (fout, "%s, ", result);
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fprintf (fout, "%s)\n", addargname);
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for (l = proc->args.decls; l != NULL; l = l->next)
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{
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pdeclaration (proc->args.argname, &l->decl, 1, ";\n");
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}
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if (mtflag)
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{
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fprintf (fout, "\t");
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ptype (proc->res_prefix, proc->res_type, 1);
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fprintf (fout, "*%s;\n", result);
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}
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}
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else
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{ /* C++ style header */
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fprintf (fout, "(");
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for (l = proc->args.decls; l != NULL; l = l->next)
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{
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pdeclaration (proc->args.argname, &l->decl, 0, ", ");
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}
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if (mtflag)
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{
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ptype (proc->res_prefix, proc->res_type, 1);
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fprintf (fout, "*%s, ", result);
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}
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fprintf (fout, " %s%s)\n", addargtype, addargname);
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}
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}
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if (!Cflag)
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fprintf (fout, "\t%s%s;\n", addargtype, addargname);
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}
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static
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const char *
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ampr (const char *type)
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{
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if (isvectordef (type, REL_ALIAS))
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{
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return "";
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}
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else
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{
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return "&";
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}
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}
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static void
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printbody (proc_list * proc)
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{
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decl_list *l;
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bool_t args2 = (proc->arg_num > 1);
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/* int i; */
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/* For new style with multiple arguments, need a structure in which
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to stuff the arguments. */
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if (newstyle && args2)
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{
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fprintf (fout, "\t%s", proc->args.argname);
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fprintf (fout, " arg;\n");
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}
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if (!mtflag)
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{
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fprintf (fout, "\tstatic ");
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if (streq (proc->res_type, "void"))
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{
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fprintf (fout, "char ");
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}
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else
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{
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ptype (proc->res_prefix, proc->res_type, 0);
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}
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fprintf (fout, "%s;\n", RESULT);
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fprintf (fout, "\n");
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fprintf (fout, "\tmemset((char *)%s%s, 0, sizeof(%s));\n",
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ampr (proc->res_type), RESULT, RESULT);
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}
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if (newstyle && !args2 && (streq (proc->args.decls->decl.type, "void")))
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{
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/* newstyle, 0 arguments */
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if (mtflag)
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fprintf (fout, "\t return ");
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else
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fprintf (fout, "\t if ");
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fprintf (fout,
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"(clnt_call (clnt, %s, (xdrproc_t) xdr_void, ", proc->proc_name);
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fprintf (fout,
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"(caddr_t) NULL,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
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stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
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RESULT);
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if (mtflag)
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fprintf (fout, "\n\t\tTIMEOUT));\n\n");
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else
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fprintf (fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
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}
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else if (newstyle && args2)
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{
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/* newstyle, multiple arguments: stuff arguments into structure */
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for (l = proc->args.decls; l != NULL; l = l->next)
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{
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fprintf (fout, "\targ.%s = %s;\n",
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l->decl.name, l->decl.name);
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}
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if (mtflag)
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fprintf (fout, "\treturn ");
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else
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fprintf (fout, "\tif ");
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fprintf (fout,
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"(clnt_call (clnt, %s, (xdrproc_t) xdr_%s", proc->proc_name,
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proc->args.argname);
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fprintf (fout,
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", (caddr_t) &arg,\n\t\t(xdrproc_t) xdr_%s, (caddr_t) %s%s,",
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stringfix(proc->res_type), (mtflag)?"":ampr(proc->res_type),
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RESULT);
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if (mtflag)
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fprintf (fout, "\n\t\tTIMEOUT));\n");
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else
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fprintf (fout, "\n\t\tTIMEOUT) != RPC_SUCCESS) {\n");
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}
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else
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{ /* single argument, new or old style */
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if (!mtflag)
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fprintf (fout,
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"\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",
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proc->proc_name,
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stringfix (proc->args.decls->decl.type),
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(newstyle ? "&" : ""),
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(newstyle ? proc->args.decls->decl.name : "argp"),
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stringfix (proc->res_type), ampr (proc->res_type),
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RESULT);
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else
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fprintf(fout,
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"\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",
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proc->proc_name,
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stringfix (proc->args.decls->decl.type),
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(newstyle ? "&" : ""),
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(newstyle ? proc->args.decls->decl.name : "argp"),
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stringfix (proc->res_type), "",
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RESULT);
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}
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if (!mtflag)
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{
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fprintf (fout, "\t\treturn (NULL);\n");
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fprintf (fout, "\t}\n");
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if (streq (proc->res_type, "void"))
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{
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fprintf (fout, "\treturn ((void *)%s%s);\n",
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ampr (proc->res_type), RESULT);
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}
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else
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{
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fprintf (fout, "\treturn (%s%s);\n", ampr (proc->res_type), RESULT);
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}
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}
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}
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