1 /* 2 * Copyright 2011 Tresys Technology, LLC. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * 1. Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY TRESYS TECHNOLOGY, LLC ``AS IS'' AND ANY EXPRESS 15 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 17 * EVENT SHALL TRESYS TECHNOLOGY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 19 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 21 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 22 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * The views and conclusions contained in the software and documentation are those 26 * of the authors and should not be interpreted as representing official policies, 27 * either expressed or implied, of Tresys Technology, LLC. 28 */ 29 30 %{ 31 #include <stdint.h> 32 #include <sepol/errcodes.h> 33 #include "cil_internal.h" 34 #include "cil_lexer.h" 35 #include "cil_log.h" 36 #include "cil_mem.h" 37 char *value = NULL; 38 int line = 1; 39 %} 40 41 %option nounput 42 %option noinput 43 %option noyywrap 44 %option prefix="cil_yy" 45 46 digit [0-9] 47 alpha [a-zA-Z] 48 spec_char [\[\]\.\@\=\/\*\-\_\$\%\+\-\!\|\&\^\:\~\`\#\{\}\'\<\>\?\,] 49 symbol ({digit}|{alpha}|{spec_char})+ 50 white [ \t] 51 newline [\n\r] 52 qstring \"[^"\n]*\" 53 comment ;[^\n]* 54 55 %% 56 {newline} line++; 57 {comment} value=yytext; return COMMENT; 58 "(" value=yytext; return OPAREN; 59 ")" value=yytext; return CPAREN; 60 {symbol} value=yytext; return SYMBOL; 61 {white} //cil_log(CIL_INFO, "white, "); 62 {qstring} value=yytext; return QSTRING; 63 <<EOF>> return END_OF_FILE; 64 . value=yytext; return UNKNOWN; 65 %% 66 67 int cil_lexer_setup(char *buffer, uint32_t size) 68 { 69 size = (yy_size_t)size; 70 if (yy_scan_buffer(buffer, size) == NULL) { 71 cil_log(CIL_INFO, "Lexer failed to setup buffer\n"); 72 return SEPOL_ERR; 73 } 74 75 line = 1; 76 77 return SEPOL_OK; 78 } 79 80 void cil_lexer_destroy(void) 81 { 82 yylex_destroy(); 83 } 84 85 int cil_lexer_next(struct token *tok) 86 { 87 tok->type = yylex(); 88 tok->value = value; 89 tok->line = line; 90 91 return SEPOL_OK; 92 } 93 94