1 %{ 2 /* 3 * Copyright (c) 2004, 2008 Kungliga Tekniska Högskolan 4 * (Royal Institute of Technology, Stockholm, Sweden). 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * 3. Neither the name of the Institute nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* $Id$ */ 36 37 #ifdef HAVE_CONFIG_H 38 #include <config.h> 39 #endif 40 41 #undef ECHO 42 43 #include <stdio.h> 44 #include <string.h> 45 #include <stdarg.h> 46 #include <stdlib.h> 47 #include "sel.h" 48 #include "sel-gram.h" 49 unsigned lineno = 1; 50 51 static char * handle_string(void); 52 static int lex_input(char *, int); 53 static int lex_classic_input(void); 54 55 struct hx_expr_input _hx509_expr_input; 56 57 #ifndef YY_NULL 58 #define YY_NULL 0 59 #endif 60 61 #define YY_NO_UNPUT 1 62 63 #undef YY_INPUT 64 #define YY_INPUT(buf,res,maxsize) (res = lex_input(buf, maxsize)) 65 66 #undef ECHO 67 68 %} 69 %% 70 71 TRUE { return kw_TRUE; } 72 FALSE { return kw_FALSE; } 73 AND { return kw_AND; } 74 OR { return kw_OR; } 75 IN { return kw_IN; } 76 TAILMATCH { return kw_TAILMATCH; } 77 78 [A-Za-z][-A-Za-z0-9_]* { 79 yylval.string = strdup ((const char *)yytext); 80 return IDENTIFIER; 81 } 82 "\"" { yylval.string = handle_string(); return STRING; } 83 \n { ++lineno; } 84 [,.!={}()%] { return *yytext; } 85 [ \t] ; 86 %% 87 88 static char * 89 handle_string(void) 90 { 91 char x[1024]; 92 int i = 0; 93 int c; 94 int quote = 0; 95 while((c = input()) != EOF){ 96 if(quote) { 97 x[i++] = '\\'; 98 x[i++] = c; 99 quote = 0; 100 continue; 101 } 102 if(c == '\n'){ 103 _hx509_sel_yyerror("unterminated string"); 104 lineno++; 105 break; 106 } 107 if(c == '\\'){ 108 quote++; 109 continue; 110 } 111 if(c == '\"') 112 break; 113 x[i++] = c; 114 } 115 x[i] = '\0'; 116 return strdup(x); 117 } 118 119 int 120 yywrap () 121 { 122 return 1; 123 } 124 125 static int 126 lex_input(char *buf, int max_size) 127 { 128 int n; 129 130 n = _hx509_expr_input.length - _hx509_expr_input.offset; 131 if (max_size < n) 132 n = max_size; 133 if (n <= 0) 134 return YY_NULL; 135 136 memcpy(buf, _hx509_expr_input.buf + _hx509_expr_input.offset, n); 137 _hx509_expr_input.offset += n; 138 139 return n; 140 } 141