8c6033d202
o added new features: o -G: generate a new paramsfile that produces the same key as the old paramsfile, o ffs verify_method, o multiple keygen methods that are xor'ed together (for n-factor authentication), and o calibrating the iteration count of PKCS#5 PBKDF2 to the current machine's speed. o changed paramsfile format to allow for the new features. o replaced open-coded parser with yacc grammar. o lots of supporting changes. o updated documentation to reflect new features and new paramsfile format.
164 lines
4.7 KiB
Plaintext
164 lines
4.7 KiB
Plaintext
%{
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/* $NetBSD: cgdparse.y,v 1.1 2003/03/24 02:02:50 elric Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Roland C. Dowdeswell.
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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
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* are met:
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: cgdparse.y,v 1.1 2003/03/24 02:02:50 elric Exp $");
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#endif
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#include <stdio.h>
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#include "params.h"
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#include "utils.h"
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extern char *yytext;
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extern int yylineno;
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int yylex(void);
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int yyerror(char *);
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struct params *cgdparsefile(FILE *);
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struct params *yy_global_params;
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%}
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%union {
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int integer;
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struct {
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char *text;
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int length;
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} token;
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string_t *string;
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bits_t *bits;
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struct params *params;
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struct keygen *keygen;
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}
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%type <params> entry rules rule
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%type <keygen> kgrule kgbody kgvars kgvar deprecated
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%type <string> stringlit base64 intstr tokstr
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%type <bits> bits
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%type <token> token deptoken
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%token <integer> INTEGER
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%token <string> STRINGLIT
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%token <token> ALGORITHM KEYLENGTH IVMETHOD VERIFY_METHOD
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%token <token> KEYGEN SALT ITERATIONS KEY
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%token EOL
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/* Deprecated tokens */
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%token <token> KEYGEN_METHOD KEYGEN_SALT KEYGEN_ITERATIONS XOR_KEY
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%%
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entry: rules { yy_global_params = $$; }
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rules: /* empty */ { $$ = NULL; }
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| rules rule { $$ = params_combine($$, $2); }
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rule: ALGORITHM stringlit EOL { $$ = params_algorithm($2); }
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| KEYLENGTH INTEGER EOL { $$ = params_keylen($2); }
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| IVMETHOD stringlit EOL { $$ = params_ivmeth($2); }
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| VERIFY_METHOD stringlit EOL { $$ = params_verify_method($2); }
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| kgrule { $$ = params_keygen($1); }
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| deprecated { $$ = params_dep_keygen($1); }
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| EOL { $$ = NULL; }
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kgrule: KEYGEN stringlit kgbody EOL { $$ = keygen_set_method($3, $2); }
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kgbody: kgvar { $$ = $1; }
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| '{' kgvars '}' { $$ = $2; }
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kgvars: /* empty */ { $$ = NULL; }
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| kgvars kgvar { $$ = keygen_combine($$, $2); }
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kgvar: SALT bits EOL { $$ = keygen_salt($2); }
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| ITERATIONS INTEGER EOL { $$ = keygen_iterations($2); }
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| KEY bits EOL { $$ = keygen_key($2); }
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| EOL { $$ = NULL; }
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stringlit: STRINGLIT | tokstr | intstr
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tokstr: token { $$ = string_new($1.text, $1.length); }
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token: ALGORITHM | KEYLENGTH
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| IVMETHOD | VERIFY_METHOD
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| KEYGEN | SALT | ITERATIONS
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| KEY
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| deptoken
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intstr: INTEGER { $$ = string_fromint($1); }
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bits: base64 { $$ = bits_decode_d($1); }
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base64: stringlit
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| base64 stringlit { $$ = string_add_d($1, $2); }
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/* The following rules are deprecated */
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deprecated:
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KEYGEN_METHOD stringlit EOL { $$ = keygen_method($2); }
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| KEYGEN_SALT bits EOL { $$ = keygen_salt($2); }
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| KEYGEN_ITERATIONS INTEGER EOL { $$ = keygen_iterations($2); }
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| XOR_KEY bits EOL { $$ = keygen_key($2); }
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deptoken: KEYGEN_METHOD | KEYGEN_SALT
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| KEYGEN_ITERATIONS | XOR_KEY
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%%
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extern FILE *yyin;
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struct params *
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cgdparsefile(FILE *f)
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{
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yyin = f;
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yy_global_params = NULL;
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if (yyparse()) {
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fprintf(stderr, "%s: failed to parse parameters file\n",
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getprogname());
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params_free(yy_global_params);
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return NULL;
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}
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return yy_global_params;
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}
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