619 lines
14 KiB
C
619 lines
14 KiB
C
/* $NetBSD: rpc_parse.c,v 1.23 2022/01/11 22:45:56 andvar Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user or with the express written consent of
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* Sun Microsystems, Inc.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if defined(__RCSID) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)rpc_parse.c 1.8 89/02/22 (C) 1987 SMI";
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#else
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__RCSID("$NetBSD: rpc_parse.c,v 1.23 2022/01/11 22:45:56 andvar Exp $");
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#endif
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#endif
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/*
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* rpc_parse.c, Parser for the RPC protocol compiler
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* Copyright (C) 1987 Sun Microsystems, Inc.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "rpc/types.h"
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#include "rpc_scan.h"
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#include "rpc_parse.h"
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#include "rpc_util.h"
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#define ARGNAME "arg"
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static void isdefined(definition *);
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static void def_struct(definition *);
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static void def_program(definition *);
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static void def_enum(definition *);
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static void def_const(definition *);
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static void def_union(definition *);
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static void check_type_name(const char *, int);
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static void def_typedef(definition *);
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static void get_declaration(declaration *, defkind);
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static void get_prog_declaration(declaration *, defkind, int);
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static void get_type(const char **, const char **, defkind);
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static void unsigned_dec(const char **);
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/*
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* return the next definition you see
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*/
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definition *
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get_definition(void)
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{
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definition *defp;
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token tok;
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defp = ALLOC(definition);
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get_token(&tok);
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switch (tok.kind) {
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case TOK_STRUCT:
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def_struct(defp);
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break;
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case TOK_UNION:
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def_union(defp);
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break;
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case TOK_TYPEDEF:
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def_typedef(defp);
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break;
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case TOK_ENUM:
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def_enum(defp);
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break;
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case TOK_PROGRAM:
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def_program(defp);
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break;
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case TOK_CONST:
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def_const(defp);
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break;
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case TOK_EOF:
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free(defp);
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return (NULL);
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default:
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error("Expected definition keyword");
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}
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scan(TOK_SEMICOLON, &tok);
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isdefined(defp);
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return (defp);
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}
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static void
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isdefined(definition *defp)
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{
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STOREVAL(&defined, defp);
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}
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static void
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def_struct(definition *defp)
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{
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token tok;
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declaration dec;
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decl_list *decls;
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decl_list **tailp;
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defp->def_kind = DEF_STRUCT;
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scan(TOK_IDENT, &tok);
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defp->def_name = tok.str;
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scan(TOK_LBRACE, &tok);
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tailp = &defp->def.st.decls;
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do {
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get_declaration(&dec, DEF_STRUCT);
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decls = ALLOC(decl_list);
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decls->decl = dec;
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*tailp = decls;
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tailp = &decls->next;
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scan(TOK_SEMICOLON, &tok);
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peek(&tok);
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} while (tok.kind != TOK_RBRACE);
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get_token(&tok);
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*tailp = NULL;
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}
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static void
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def_program(definition *defp)
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{
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token tok;
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declaration dec;
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decl_list *decls;
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decl_list **tailp;
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version_list *vlist;
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version_list **vtailp;
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proc_list *plist;
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proc_list **ptailp;
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int num_args;
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bool_t isvoid = FALSE; /* whether first argument is void */
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defp->def_kind = DEF_PROGRAM;
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scan(TOK_IDENT, &tok);
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defp->def_name = tok.str;
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scan(TOK_LBRACE, &tok);
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vtailp = &defp->def.pr.versions;
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tailp = &defp->def.st.decls;
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scan(TOK_VERSION, &tok);
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do {
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scan(TOK_IDENT, &tok);
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vlist = ALLOC(version_list);
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vlist->vers_name = tok.str;
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scan(TOK_LBRACE, &tok);
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ptailp = &vlist->procs;
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do {
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/* get result type */
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plist = ALLOC(proc_list);
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get_type(&plist->res_prefix, &plist->res_type,
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DEF_PROGRAM);
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if (streq(plist->res_type, "opaque")) {
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error("Illegal result type");
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}
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scan(TOK_IDENT, &tok);
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plist->proc_name = tok.str;
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scan(TOK_LPAREN, &tok);
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/* get args - first one */
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num_args = 1;
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isvoid = FALSE;
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/* type of DEF_PROGRAM in the first
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* get_prog_declaration and DEF_STRUCT in the next
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* allows void as argument if it is the only argument */
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get_prog_declaration(&dec, DEF_PROGRAM, num_args);
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if (streq(dec.type, "void"))
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isvoid = TRUE;
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decls = ALLOC(decl_list);
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plist->args.decls = decls;
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decls->decl = dec;
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tailp = &decls->next;
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/* get args */
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while (peekscan(TOK_COMMA, &tok)) {
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num_args++;
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get_prog_declaration(&dec, DEF_STRUCT,
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num_args);
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decls = ALLOC(decl_list);
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decls->decl = dec;
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*tailp = decls;
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if (streq(dec.type, "void"))
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isvoid = TRUE;
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tailp = &decls->next;
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}
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/* multiple arguments are only allowed in newstyle */
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if (!newstyle && num_args > 1) {
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error("Only one argument is allowed");
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}
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if (isvoid && num_args > 1) {
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error("Illegal use of void in program definition");
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}
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*tailp = NULL;
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scan(TOK_RPAREN, &tok);
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scan(TOK_EQUAL, &tok);
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scan_num(&tok);
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scan(TOK_SEMICOLON, &tok);
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plist->proc_num = tok.str;
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plist->arg_num = num_args;
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*ptailp = plist;
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ptailp = &plist->next;
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peek(&tok);
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} while (tok.kind != TOK_RBRACE);
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*ptailp = NULL;
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*vtailp = vlist;
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vtailp = &vlist->next;
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scan(TOK_RBRACE, &tok);
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scan(TOK_EQUAL, &tok);
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scan_num(&tok);
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vlist->vers_num = tok.str;
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/* make the argument structure name for each arg */
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for (plist = vlist->procs; plist != NULL;
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plist = plist->next) {
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plist->args.argname = make_argname(plist->proc_name,
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vlist->vers_num);
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/* free the memory ?? */
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}
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scan(TOK_SEMICOLON, &tok);
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scan2(TOK_VERSION, TOK_RBRACE, &tok);
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} while (tok.kind == TOK_VERSION);
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scan(TOK_EQUAL, &tok);
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scan_num(&tok);
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defp->def.pr.prog_num = tok.str;
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*vtailp = NULL;
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}
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static void
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def_enum(definition *defp)
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{
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token tok;
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enumval_list *elist;
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enumval_list **tailp;
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defp->def_kind = DEF_ENUM;
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scan(TOK_IDENT, &tok);
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defp->def_name = tok.str;
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scan(TOK_LBRACE, &tok);
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tailp = &defp->def.en.vals;
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do {
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scan(TOK_IDENT, &tok);
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elist = ALLOC(enumval_list);
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elist->name = tok.str;
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elist->assignment = NULL;
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scan3(TOK_COMMA, TOK_RBRACE, TOK_EQUAL, &tok);
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if (tok.kind == TOK_EQUAL) {
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scan_num(&tok);
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elist->assignment = tok.str;
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scan2(TOK_COMMA, TOK_RBRACE, &tok);
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}
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*tailp = elist;
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tailp = &elist->next;
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} while (tok.kind != TOK_RBRACE);
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*tailp = NULL;
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}
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static void
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def_const(definition *defp)
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{
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token tok;
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defp->def_kind = DEF_CONST;
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scan(TOK_IDENT, &tok);
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defp->def_name = tok.str;
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scan(TOK_EQUAL, &tok);
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scan2(TOK_IDENT, TOK_STRCONST, &tok);
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defp->def.co = tok.str;
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}
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static void
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def_union(definition *defp)
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{
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|
token tok;
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|
declaration dec;
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|
case_list *cases;
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|
case_list **tailp;
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defp->def_kind = DEF_UNION;
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scan(TOK_IDENT, &tok);
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defp->def_name = tok.str;
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scan(TOK_SWITCH, &tok);
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scan(TOK_LPAREN, &tok);
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get_declaration(&dec, DEF_UNION);
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defp->def.un.enum_decl = dec;
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tailp = &defp->def.un.cases;
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scan(TOK_RPAREN, &tok);
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scan(TOK_LBRACE, &tok);
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scan(TOK_CASE, &tok);
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while (tok.kind == TOK_CASE) {
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scan2(TOK_IDENT, TOK_CHARCONST, &tok);
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cases = ALLOC(case_list);
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cases->case_name = tok.str;
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scan(TOK_COLON, &tok);
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/* now peek at next token */
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if (peekscan(TOK_CASE, &tok)) {
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do {
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scan2(TOK_IDENT, TOK_CHARCONST, &tok);
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cases->contflag = 1; /* continued case
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|
* statement */
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*tailp = cases;
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tailp = &cases->next;
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cases = ALLOC(case_list);
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cases->case_name = tok.str;
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scan(TOK_COLON, &tok);
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|
} while (peekscan(TOK_CASE, &tok));
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}
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get_declaration(&dec, DEF_UNION);
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cases->case_decl = dec;
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cases->contflag = 0; /* no continued case statement */
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*tailp = cases;
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tailp = &cases->next;
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scan(TOK_SEMICOLON, &tok);
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scan3(TOK_CASE, TOK_DEFAULT, TOK_RBRACE, &tok);
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}
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*tailp = NULL;
|
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if (tok.kind == TOK_DEFAULT) {
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scan(TOK_COLON, &tok);
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get_declaration(&dec, DEF_UNION);
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defp->def.un.default_decl = ALLOC(declaration);
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*defp->def.un.default_decl = dec;
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scan(TOK_SEMICOLON, &tok);
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scan(TOK_RBRACE, &tok);
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} else {
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defp->def.un.default_decl = NULL;
|
|
}
|
|
}
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|
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static const char *const reserved_words[] = {
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"array",
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"bytes",
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"destroy",
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"free",
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"getpos",
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|
"inline",
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"pointer",
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|
"reference",
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|
"setpos",
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"sizeof",
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"union",
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"vector",
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NULL
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};
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static const char *const reserved_types[] = {
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"opaque",
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"string",
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NULL
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};
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/* check that the given name is not one that would eventually result in
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xdr routines that would conflict with internal XDR routines. */
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static void
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check_type_name(const char *name, int new_type)
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{
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int i;
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for (i = 0; reserved_words[i] != NULL; i++) {
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if (strcmp(name, reserved_words[i]) == 0) {
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error("Illegal (reserved) name '%s' in type definition", name);
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}
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}
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if (new_type) {
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for (i = 0; reserved_types[i] != NULL; i++) {
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if (strcmp(name, reserved_types[i]) == 0) {
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error("Illegal (reserved) name '%s' in type definition", name);
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}
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}
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}
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}
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|
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static void
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def_typedef(definition *defp)
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{
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declaration dec;
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defp->def_kind = DEF_TYPEDEF;
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get_declaration(&dec, DEF_TYPEDEF);
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defp->def_name = dec.name;
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check_type_name(dec.name, 1);
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defp->def.ty.old_prefix = dec.prefix;
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defp->def.ty.old_type = dec.type;
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defp->def.ty.rel = dec.rel;
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defp->def.ty.array_max = dec.array_max;
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}
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|
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static void
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get_declaration(declaration *dec, defkind dkind)
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{
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|
token tok;
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get_type(&dec->prefix, &dec->type, dkind);
|
|
dec->rel = REL_ALIAS;
|
|
if (streq(dec->type, "void")) {
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return;
|
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}
|
|
check_type_name(dec->type, 0);
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|
|
scan2(TOK_STAR, TOK_IDENT, &tok);
|
|
if (tok.kind == TOK_STAR) {
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|
dec->rel = REL_POINTER;
|
|
scan(TOK_IDENT, &tok);
|
|
}
|
|
dec->name = tok.str;
|
|
if (peekscan(TOK_LBRACKET, &tok)) {
|
|
if (dec->rel == REL_POINTER) {
|
|
error("No array-of-pointer declarations -- use typedef");
|
|
}
|
|
dec->rel = REL_VECTOR;
|
|
scan_num(&tok);
|
|
dec->array_max = tok.str;
|
|
scan(TOK_RBRACKET, &tok);
|
|
} else
|
|
if (peekscan(TOK_LANGLE, &tok)) {
|
|
if (dec->rel == REL_POINTER) {
|
|
error("No array-of-pointer declarations -- use typedef");
|
|
}
|
|
dec->rel = REL_ARRAY;
|
|
if (peekscan(TOK_RANGLE, &tok)) {
|
|
dec->array_max = "(unsigned int)~0";
|
|
/* unspecified size, use * max */
|
|
} else {
|
|
scan_num(&tok);
|
|
dec->array_max = tok.str;
|
|
scan(TOK_RANGLE, &tok);
|
|
}
|
|
}
|
|
if (streq(dec->type, "opaque")) {
|
|
if (dec->rel != REL_ARRAY && dec->rel != REL_VECTOR) {
|
|
error("Array declaration expected");
|
|
}
|
|
} else
|
|
if (streq(dec->type, "string")) {
|
|
if (dec->rel != REL_ARRAY) {
|
|
error("Variable-length array declaration expected");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_prog_declaration(declaration *dec, defkind dkind, int num /* arg number */)
|
|
{
|
|
token tok;
|
|
char name[255]; /* argument name */
|
|
|
|
if (dkind == DEF_PROGRAM) {
|
|
peek(&tok);
|
|
if (tok.kind == TOK_RPAREN) { /* no arguments */
|
|
dec->rel = REL_ALIAS;
|
|
dec->type = "void";
|
|
dec->prefix = NULL;
|
|
dec->name = NULL;
|
|
return;
|
|
}
|
|
}
|
|
get_type(&dec->prefix, &dec->type, dkind);
|
|
dec->rel = REL_ALIAS;
|
|
if (peekscan(TOK_IDENT, &tok)) /* optional name of argument */
|
|
strcpy(name, tok.str);
|
|
else
|
|
sprintf(name, "%s%d", ARGNAME, num); /* default name of
|
|
* argument */
|
|
|
|
dec->name = strdup(name);
|
|
|
|
if (streq(dec->type, "void")) {
|
|
return;
|
|
}
|
|
if (streq(dec->type, "opaque")) {
|
|
error("Opaque -- illegal argument type");
|
|
}
|
|
if (peekscan(TOK_STAR, &tok)) {
|
|
if (streq(dec->type, "string")) {
|
|
error("Pointer to string not allowed in program arguments\n");
|
|
}
|
|
dec->rel = REL_POINTER;
|
|
if (peekscan(TOK_IDENT, &tok)) /* optional name of argument */
|
|
dec->name = strdup(tok.str);
|
|
}
|
|
if (peekscan(TOK_LANGLE, &tok)) {
|
|
if (!streq(dec->type, "string")) {
|
|
error("Arrays cannot be declared as arguments to procedures -- use typedef");
|
|
}
|
|
dec->rel = REL_ARRAY;
|
|
if (peekscan(TOK_RANGLE, &tok)) {
|
|
dec->array_max = "(unsigned int)~0";
|
|
/* unspecified size, use max */
|
|
} else {
|
|
scan_num(&tok);
|
|
dec->array_max = tok.str;
|
|
scan(TOK_RANGLE, &tok);
|
|
}
|
|
}
|
|
if (streq(dec->type, "string")) {
|
|
if (dec->rel != REL_ARRAY) { /* .x specifies just string as
|
|
* type of argument - make it
|
|
* string<> */
|
|
dec->rel = REL_ARRAY;
|
|
dec->array_max = "(unsigned int)~0";
|
|
/* unspecified size, use max */
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
get_type(const char **prefixp, const char **typep, defkind dkind)
|
|
{
|
|
token tok;
|
|
|
|
*prefixp = NULL;
|
|
get_token(&tok);
|
|
switch (tok.kind) {
|
|
case TOK_IDENT:
|
|
*typep = tok.str;
|
|
break;
|
|
case TOK_STRUCT:
|
|
case TOK_ENUM:
|
|
case TOK_UNION:
|
|
*prefixp = tok.str;
|
|
scan(TOK_IDENT, &tok);
|
|
*typep = tok.str;
|
|
break;
|
|
case TOK_UNSIGNED:
|
|
unsigned_dec(typep);
|
|
break;
|
|
case TOK_SHORT:
|
|
*typep = "short";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_LONG:
|
|
*typep = "long";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_HYPER:
|
|
*typep = "longlong_t";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_VOID:
|
|
if (dkind != DEF_UNION && dkind != DEF_PROGRAM) {
|
|
error("Void is allowed only inside union and program definitions with one argument");
|
|
}
|
|
*typep = tok.str;
|
|
break;
|
|
case TOK_STRING:
|
|
case TOK_OPAQUE:
|
|
case TOK_CHAR:
|
|
case TOK_INT:
|
|
case TOK_FLOAT:
|
|
case TOK_DOUBLE:
|
|
case TOK_BOOL:
|
|
case TOK_QUAD:
|
|
*typep = tok.str;
|
|
break;
|
|
default:
|
|
error("Type specifier expected");
|
|
}
|
|
}
|
|
|
|
static void
|
|
unsigned_dec(const char **typep)
|
|
{
|
|
token tok;
|
|
|
|
peek(&tok);
|
|
switch (tok.kind) {
|
|
case TOK_CHAR:
|
|
get_token(&tok);
|
|
*typep = "u_char";
|
|
break;
|
|
case TOK_SHORT:
|
|
get_token(&tok);
|
|
*typep = "u_short";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_LONG:
|
|
get_token(&tok);
|
|
*typep = "u_long";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_HYPER:
|
|
get_token(&tok);
|
|
*typep = "u_longlong_t";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_INT:
|
|
get_token(&tok);
|
|
*typep = "u_int";
|
|
break;
|
|
default:
|
|
*typep = "u_int";
|
|
break;
|
|
}
|
|
}
|