220 lines
6.7 KiB
C
220 lines
6.7 KiB
C
/* $OpenBSD: rpc_clntout.c,v 1.15 2010/09/01 14:43:34 millert Exp $ */
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/* $NetBSD: rpc_clntout.c,v 1.4 1995/06/11 21:49:52 pk Exp $ */
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/*
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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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/*
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* rpc_clntout.c, Client-stub outputter for the RPC protocol compiler
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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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static void write_program(definition *);
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static void printbody(proc_list *);
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#define DEFAULT_TIMEOUT 25 /* in seconds */
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static char RESULT[] = "clnt_res";
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void
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write_stubs()
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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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def = (definition *) l->val;
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if (def->def_kind == DEF_PROGRAM) {
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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(def)
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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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for (proc = vp->procs; proc != NULL; proc = proc->next) {
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fprintf(fout, "\n");
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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, "clnt", "CLIENT *");
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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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/*
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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 printarglist(proc, addargname, addargtype)
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proc_list *proc;
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char *addargname, *addargtype;
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{
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decl_list *l;
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if (!newstyle) { /* old style: always pass argument by reference */
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if (Cflag) { /* 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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fprintf(fout, "*argp, %s%s)\n", addargtype, addargname);
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} else {
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fprintf(fout, "(argp, %s)\n", 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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}
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} else if (streq(proc->args.decls->decl.type, "void")) {
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/* newstyle, 0 argument */
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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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} else {
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/* new style, 1 or multiple arguments */
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if (!Cflag) {
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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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fprintf(fout, "%s)\n", addargname);
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for (l = proc->args.decls; l != NULL; l = l->next)
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pdeclaration(proc->args.argname, &l->decl, 1, ";\n");
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} else { /* 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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pdeclaration(proc->args.argname, &l->decl, 0, ", ");
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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 char *
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ampr(char *type)
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{
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if (isvectordef(type, REL_ALIAS)) {
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return ("");
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} else {
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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)
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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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/*
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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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*/
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if (newstyle && args2) {
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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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fprintf(fout, "\tstatic ");
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if (streq(proc->res_type, "void")) {
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fprintf(fout, "char ");
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} else {
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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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if (newstyle && !args2 && (streq(proc->args.decls->decl.type, "void"))) {
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/* newstyle, 0 arguments */
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fprintf(fout,
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"\tif (clnt_call(clnt, %s, xdr_void", proc->proc_name);
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fprintf(fout,
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", NULL, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
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stringfix(proc->res_type), ampr(proc->res_type), RESULT);
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} else if (newstyle && args2) {
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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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fprintf(fout, "\targ.%s = %s;\n",
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l->decl.name, l->decl.name);
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}
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fprintf(fout,
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"\tif (clnt_call(clnt, %s, xdr_%s", proc->proc_name,
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proc->args.argname);
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fprintf(fout,
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", &arg, xdr_%s, %s%s, TIMEOUT) != RPC_SUCCESS) {\n",
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stringfix(proc->res_type),
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ampr(proc->res_type), RESULT);
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} else { /* single argument, new or old style */
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fprintf(fout,
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"\tif (clnt_call(clnt, %s, xdr_%s, %s%s, xdr_%s, "
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"%s%s, TIMEOUT) != 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),
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ampr(proc->res_type),RESULT);
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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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fprintf(fout, "\treturn ((void *)%s%s);\n",
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ampr(proc->res_type),RESULT);
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} else {
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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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