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cgdparse.y revision 1.1 
      1 %{
      2 /* $NetBSD: cgdparse.y,v 1.1 2003/03/24 02:02:50 elric Exp $ */
      3 
      4 /*-
      5  * Copyright (c) 2003 The NetBSD Foundation, Inc.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to The NetBSD Foundation
      9  * by Roland C. Dowdeswell.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *        This product includes software developed by the NetBSD
     22  *        Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 #ifndef lint
     42 __RCSID("$NetBSD: cgdparse.y,v 1.1 2003/03/24 02:02:50 elric Exp $");
     43 #endif
     44 
     45 #include <stdio.h>
     46 
     47 #include "params.h"
     48 #include "utils.h"
     49 
     50 extern char *yytext;
     51 extern int yylineno;
     52 
     53 int yylex(void);
     54 int yyerror(char *);
     55 
     56 struct params *cgdparsefile(FILE *);
     57 
     58 struct params *yy_global_params;
     59 
     60 %}
     61 %union {
     62 	int	 	 integer;
     63 	struct {
     64 		char	*text;
     65 		int	 length;
     66 	} token;
     67 	string_t	*string;
     68 	bits_t		*bits;
     69 	struct params	*params;
     70 	struct keygen	*keygen;
     71 }
     72 
     73 %type <params>	entry rules rule
     74 %type <keygen>	kgrule kgbody kgvars kgvar deprecated
     75 %type <string>	stringlit base64 intstr tokstr
     76 %type <bits>	bits
     77 %type <token>	token deptoken
     78 
     79 %token <integer> INTEGER
     80 %token <string> STRINGLIT
     81 
     82 %token <token> ALGORITHM KEYLENGTH IVMETHOD VERIFY_METHOD
     83 %token <token> KEYGEN SALT ITERATIONS KEY
     84 
     85 %token EOL
     86 
     87 /* Deprecated tokens */
     88 %token <token> KEYGEN_METHOD KEYGEN_SALT KEYGEN_ITERATIONS XOR_KEY
     89 
     90 %%
     91 
     92 entry:	  rules				{ yy_global_params = $$; }
     93 
     94 rules:	/* empty */			{ $$ = NULL; }
     95 	| rules rule			{ $$ = params_combine($$, $2); }
     96 
     97 rule:	  ALGORITHM stringlit EOL	{ $$ = params_algorithm($2); }
     98 	| KEYLENGTH INTEGER EOL		{ $$ = params_keylen($2); }
     99 	| IVMETHOD stringlit EOL	{ $$ = params_ivmeth($2); }
    100 	| VERIFY_METHOD stringlit EOL	{ $$ = params_verify_method($2); }
    101 	| kgrule			{ $$ = params_keygen($1); }
    102 	| deprecated			{ $$ = params_dep_keygen($1); }
    103 	| EOL				{ $$ = NULL; }
    104 
    105 kgrule:	  KEYGEN stringlit kgbody EOL	{ $$ = keygen_set_method($3, $2); }
    106 
    107 kgbody:	  kgvar				{ $$ = $1; }
    108 	| '{' kgvars '}'		{ $$ = $2; }
    109 
    110 kgvars: /* empty */			{ $$ = NULL; }
    111 	| kgvars kgvar			{ $$ = keygen_combine($$, $2); }
    112 
    113 kgvar:	  SALT bits EOL			{ $$ = keygen_salt($2); }
    114 	| ITERATIONS INTEGER EOL	{ $$ = keygen_iterations($2); }
    115 	| KEY bits EOL			{ $$ = keygen_key($2); }
    116 	| EOL				{ $$ = NULL; }
    117 
    118 stringlit:  STRINGLIT | tokstr | intstr
    119 
    120 tokstr:	  token				{ $$ = string_new($1.text, $1.length); }
    121 
    122 token:	  ALGORITHM | KEYLENGTH
    123 	| IVMETHOD | VERIFY_METHOD
    124 	| KEYGEN | SALT | ITERATIONS
    125 	| KEY
    126 	| deptoken
    127 
    128 intstr:   INTEGER			{ $$ = string_fromint($1); }
    129 
    130 bits:	  base64			{ $$ = bits_decode_d($1); }
    131 
    132 base64:   stringlit
    133 	| base64 stringlit		{ $$ = string_add_d($1, $2); }
    134 
    135 /* The following rules are deprecated */
    136 
    137 deprecated:
    138 	  KEYGEN_METHOD stringlit EOL	{ $$ = keygen_method($2); }
    139 	| KEYGEN_SALT bits EOL		{ $$ = keygen_salt($2); }
    140 	| KEYGEN_ITERATIONS INTEGER EOL	{ $$ = keygen_iterations($2); }
    141 	| XOR_KEY bits EOL		{ $$ = keygen_key($2); }
    142 
    143 deptoken: KEYGEN_METHOD | KEYGEN_SALT
    144 	| KEYGEN_ITERATIONS | XOR_KEY
    145 
    146 %%
    147 
    148 extern FILE *yyin;
    149 
    150 struct params *
    151 cgdparsefile(FILE *f)
    152 {
    153 
    154 	yyin = f;
    155 	yy_global_params = NULL;
    156 	if (yyparse()) {
    157 		fprintf(stderr, "%s: failed to parse parameters file\n",
    158 		    getprogname());
    159 		params_free(yy_global_params);
    160 		return NULL;
    161 	}
    162 	return yy_global_params;
    163 }
    164