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 hll_lm ^;;\* 54 comment ; 55 56 %% 57 {newline} line++; return NEWLINE; 58 {hll_lm} value=yytext; return HLL_LINEMARK; 59 {comment} value=yytext; return COMMENT; 60 "(" value=yytext; return OPAREN; 61 ")" value=yytext; return CPAREN; 62 {symbol} value=yytext; return SYMBOL; 63 {white} ; 64 {qstring} value=yytext; return QSTRING; 65 <<EOF>> return END_OF_FILE; 66 . value=yytext; return UNKNOWN; 67 %% 68 69 int cil_lexer_setup(char *buffer, uint32_t size) 70 { 71 size = (yy_size_t)size; 72 if (yy_scan_buffer(buffer, size) == NULL) { 73 cil_log(CIL_INFO, "Lexer failed to setup buffer\n"); 74 return SEPOL_ERR; 75 } 76 77 line = 1; 78 79 return SEPOL_OK; 80 } 81 82 void cil_lexer_destroy(void) 83 { 84 yylex_destroy(); 85 } 86 87 int cil_lexer_next(struct token *tok) 88 { 89 tok->type = yylex(); 90 tok->value = value; 91 tok->line = line; 92 93 return SEPOL_OK; 94 } 95