1 %{ 2 /* $NetBSD: cgdparse.y,v 1.7 2022/08/12 10:49:17 riastradh 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 1.7 2022/08/12 10:49:17 riastradh 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 MEMORY PARALLELISM VERSION KEY CMD SHARED 71 %token <token> SUBKEY 72 73 %token EOL 74 75 /* Deprecated tokens */ 76 %token <token> KEYGEN_METHOD KEYGEN_SALT KEYGEN_ITERATIONS XOR_KEY 77 78 %% 79 80 entry: rules { yy_global_params = $$; } 81 82 rules: /* empty */ { $$ = NULL; } 83 | rules rule { $$ = params_combine($$, $2); } 84 85 rule: ALGORITHM stringlit EOL { $$ = params_algorithm($2); } 86 | KEYLENGTH INTEGER EOL { $$ = params_keylen($2); } 87 | IVMETHOD stringlit EOL { $$ = params_ivmeth($2); } 88 | VERIFY_METHOD stringlit EOL { $$ = params_verify_method($2); } 89 | kgrule { $$ = params_keygen($1); } 90 | deprecated { $$ = params_dep_keygen($1); } 91 | EOL { $$ = NULL; } 92 93 kgrule: KEYGEN stringlit kgbody EOL { $$ = keygen_set_method($3, $2); } 94 95 kgbody: kgvar { $$ = $1; } 96 | '{' kgvars '}' { $$ = $2; } 97 98 kgvars: /* empty */ { $$ = NULL; } 99 | kgvars kgvar { $$ = keygen_combine($$, $2); } 100 101 kgvar: SALT bits EOL { $$ = keygen_salt($2); } 102 | ITERATIONS INTEGER EOL { $$ = keygen_iterations($2); } 103 | MEMORY INTEGER EOL { $$ = keygen_memory($2); } 104 | PARALLELISM INTEGER EOL { $$ = keygen_parallelism($2); } 105 | VERSION INTEGER EOL { $$ = keygen_version($2); } 106 | KEY bits EOL { $$ = keygen_key($2); } 107 | CMD stringlit EOL { $$ = keygen_cmd($2); } 108 | SHARED stringlit ALGORITHM stringlit SUBKEY bits EOL 109 { $$ = keygen_shared($2, $4, $6); } 110 | EOL { $$ = NULL; } 111 112 stringlit: STRINGLIT | tokstr | intstr 113 114 tokstr: token { $$ = string_new($1.text, $1.length); } 115 116 token: ALGORITHM | KEYLENGTH 117 | IVMETHOD | VERIFY_METHOD 118 | KEYGEN | SALT | ITERATIONS 119 | KEY 120 | deptoken 121 122 intstr: INTEGER { $$ = string_fromint($1); } 123 124 bits: base64 { $$ = bits_decode_d($1); } 125 126 base64: stringlit 127 | base64 stringlit { $$ = string_add_d($1, $2); } 128 129 /* The following rules are deprecated */ 130 131 deprecated: 132 KEYGEN_METHOD stringlit EOL { $$ = keygen_method($2); } 133 | KEYGEN_SALT bits EOL { $$ = keygen_salt($2); } 134 | KEYGEN_ITERATIONS INTEGER EOL { $$ = keygen_iterations($2); } 135 | XOR_KEY bits EOL { $$ = keygen_key($2); } 136 137 deptoken: KEYGEN_METHOD | KEYGEN_SALT 138 | KEYGEN_ITERATIONS | XOR_KEY 139 140 %% 141 142 struct params * 143 cgdparsefile(FILE *f) 144 { 145 146 yyin = f; 147 yy_global_params = NULL; 148 if (yyparse()) { 149 fprintf(stderr, "%s: failed to parse parameters file\n", 150 getprogname()); 151 params_free(yy_global_params); 152 return NULL; 153 } 154 return yy_global_params; 155 } 156