1 /* 2 * Copyright (c) 2008 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 %{ 35 #ifdef HAVE_CONFIG_H 36 #include <config.h> 37 #endif 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <hx_locl.h> 41 42 43 %} 44 45 %union { 46 char *string; 47 struct hx_expr *expr; 48 } 49 50 %token kw_TRUE 51 %token kw_FALSE 52 %token kw_AND 53 %token kw_OR 54 %token kw_IN 55 %token kw_TAILMATCH 56 57 %type <expr> expr 58 %type <expr> comp 59 %type <expr> word words 60 %type <expr> number 61 %type <expr> string 62 %type <expr> function 63 %type <expr> variable variables 64 65 %token <string> NUMBER 66 %token <string> STRING 67 %token <string> IDENTIFIER 68 69 %start start 70 71 %% 72 73 start: expr { _hx509_expr_input.expr = $1; } 74 75 expr : kw_TRUE { $$ = _hx509_make_expr(op_TRUE, NULL, NULL); } 76 | kw_FALSE { $$ = _hx509_make_expr(op_FALSE, NULL, NULL); } 77 | '!' expr { $$ = _hx509_make_expr(op_NOT, $2, NULL); } 78 | expr kw_AND expr { $$ = _hx509_make_expr(op_AND, $1, $3); } 79 | expr kw_OR expr { $$ = _hx509_make_expr(op_OR, $1, $3); } 80 | '(' expr ')' { $$ = $2; } 81 | comp { $$ = _hx509_make_expr(op_COMP, $1, NULL); } 82 ; 83 84 words : word { $$ = _hx509_make_expr(expr_WORDS, $1, NULL); } 85 | word ',' words { $$ = _hx509_make_expr(expr_WORDS, $1, $3); } 86 ; 87 88 comp : word '=' '=' word { $$ = _hx509_make_expr(comp_EQ, $1, $4); } 89 | word '!' '=' word { $$ = _hx509_make_expr(comp_NE, $1, $4); } 90 | word kw_TAILMATCH word { $$ = _hx509_make_expr(comp_TAILEQ, $1, $3); } 91 | word kw_IN '(' words ')' { $$ = _hx509_make_expr(comp_IN, $1, $4); } 92 | word kw_IN variable { $$ = _hx509_make_expr(comp_IN, $1, $3); } 93 ; 94 95 word : number { $$ = $1; } 96 | string { $$ = $1; } 97 | function { $$ = $1; } 98 | variable { $$ = $1; } 99 ; 100 101 number : NUMBER { $$ = _hx509_make_expr(expr_NUMBER, $1, NULL); }; 102 string : STRING { $$ = _hx509_make_expr(expr_STRING, $1, NULL); }; 103 104 function: IDENTIFIER '(' words ')' { 105 $$ = _hx509_make_expr(expr_FUNCTION, $1, $3); } 106 ; 107 variable: '%' '{' variables '}' { $$ = $3; } 108 ; 109 110 variables: IDENTIFIER '.' variables { 111 $$ = _hx509_make_expr(expr_VAR, $1, $3); } 112 | IDENTIFIER { 113 $$ = _hx509_make_expr(expr_VAR, $1, NULL); } 114 ; 115