1 %{ 2 /* $NetBSD: cgdparse.y,v 1.5 2008/07/17 16:24:55 drochner 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 __RCSID("$NetBSD: cgdparse.y,v 1.5 2008/07/17 16:24:55 drochner Exp $"); 36 #endif 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 41 #include "params.h" 42 #include "utils.h" 43 #include "extern.h" 44 45 static struct params *yy_global_params; 46 47 %} 48 %union { 49 int integer; 50 struct { 51 char *text; 52 int length; 53 } token; 54 string_t *string; 55 bits_t *bits; 56 struct params *params; 57 struct keygen *keygen; 58 } 59 60 %type <params> entry rules rule 61 %type <keygen> kgrule kgbody kgvars kgvar deprecated 62 %type <string> stringlit base64 intstr tokstr 63 %type <bits> bits 64 %type <token> token deptoken 65 66 %token <integer> INTEGER 67 %token <string> STRINGLIT 68 69 %token <token> ALGORITHM KEYLENGTH IVMETHOD VERIFY_METHOD 70 %token <token> KEYGEN SALT ITERATIONS KEY CMD 71 72 %token EOL 73 74 /* Deprecated tokens */ 75 %token <token> KEYGEN_METHOD KEYGEN_SALT KEYGEN_ITERATIONS XOR_KEY 76 77 %% 78 79 entry: rules { yy_global_params = $$; } 80 81 rules: /* empty */ { $$ = NULL; } 82 | rules rule { $$ = params_combine($$, $2); } 83 84 rule: ALGORITHM stringlit EOL { $$ = params_algorithm($2); } 85 | KEYLENGTH INTEGER EOL { $$ = params_keylen($2); } 86 | IVMETHOD stringlit EOL { $$ = params_ivmeth($2); } 87 | VERIFY_METHOD stringlit EOL { $$ = params_verify_method($2); } 88 | kgrule { $$ = params_keygen($1); } 89 | deprecated { $$ = params_dep_keygen($1); } 90 | EOL { $$ = NULL; } 91 92 kgrule: KEYGEN stringlit kgbody EOL { $$ = keygen_set_method($3, $2); } 93 94 kgbody: kgvar { $$ = $1; } 95 | '{' kgvars '}' { $$ = $2; } 96 97 kgvars: /* empty */ { $$ = NULL; } 98 | kgvars kgvar { $$ = keygen_combine($$, $2); } 99 100 kgvar: SALT bits EOL { $$ = keygen_salt($2); } 101 | ITERATIONS INTEGER EOL { $$ = keygen_iterations($2); } 102 | KEY bits EOL { $$ = keygen_key($2); } 103 | CMD stringlit EOL { $$ = keygen_cmd($2); } 104 | EOL { $$ = NULL; } 105 106 stringlit: STRINGLIT | tokstr | intstr 107 108 tokstr: token { $$ = string_new($1.text, $1.length); } 109 110 token: ALGORITHM | KEYLENGTH 111 | IVMETHOD | VERIFY_METHOD 112 | KEYGEN | SALT | ITERATIONS 113 | KEY 114 | deptoken 115 116 intstr: INTEGER { $$ = string_fromint($1); } 117 118 bits: base64 { $$ = bits_decode_d($1); } 119 120 base64: stringlit 121 | base64 stringlit { $$ = string_add_d($1, $2); } 122 123 /* The following rules are deprecated */ 124 125 deprecated: 126 KEYGEN_METHOD stringlit EOL { $$ = keygen_method($2); } 127 | KEYGEN_SALT bits EOL { $$ = keygen_salt($2); } 128 | KEYGEN_ITERATIONS INTEGER EOL { $$ = keygen_iterations($2); } 129 | XOR_KEY bits EOL { $$ = keygen_key($2); } 130 131 deptoken: KEYGEN_METHOD | KEYGEN_SALT 132 | KEYGEN_ITERATIONS | XOR_KEY 133 134 %% 135 136 struct params * 137 cgdparsefile(FILE *f) 138 { 139 140 yyin = f; 141 yy_global_params = NULL; 142 if (yyparse()) { 143 fprintf(stderr, "%s: failed to parse parameters file\n", 144 getprogname()); 145 params_free(yy_global_params); 146 return NULL; 147 } 148 return yy_global_params; 149 } 150