1 /* $NetBSD: token.l,v 1.2 2011/05/24 13:41:53 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 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 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 30 %{ 31 #include <sys/cdefs.h> 32 33 #ifndef lint 34 __RCSID("$NetBSD: token.l,v 1.2 2011/05/24 13:41:53 joerg Exp $"); 35 #endif 36 37 #include <stdlib.h> 38 #include <limits.h> 39 #include <inttypes.h> 40 #include <string.h> 41 #include <errno.h> 42 43 #include <net/if.h> 44 #include <netinet/in.h> 45 #include <net/pfvar.h> 46 47 #include "parse.h" 48 #include "parser.h" 49 50 %} 51 52 %option nounput 53 %option noinput 54 55 %% 56 57 state { return STATE;} 58 on { return ON;} 59 out { return OUT;} 60 in { return IN;} 61 proto { return PROTO;} 62 from { return FROM;} 63 to { return TO;} 64 using { return USING;} 65 id { return ID;} 66 cid { return CID;} 67 expire { return EXPIRE;} 68 timeout { return TIMEOUT;} 69 src { return SRC;} 70 dst { return DST;} 71 seq { return SEQ;} 72 max_win { return MAX_WIN;} 73 wscale { return WSCALE;} 74 mss { return MSS;} 75 no-scrub { return NOSCRUB;} 76 scrub { return SCRUB;} 77 flags { return FLAGS;} 78 ttl { return TTL;} 79 mode { return MODE;} 80 [0-9]+ { char *ep; 81 errno = 0; 82 yylval.num = strtoumax(yytext, &ep, 10); 83 if (errno == ERANGE && yylval.num == UINTMAX_MAX) 84 yyfatal("Number out of range"); 85 return NUMBER; 86 } 87 88 [A-Za-z0-9:\[][A-Za-z0-9\[\]_:%\.-]* { yylval.str = strdup(yytext); 89 if (yylval.str == NULL) 90 yyfatal("Not enough memory"); 91 return STRING; 92 } 93 94 95 \n { lineno ++; } 96 97 %% 98 99 100 void 101 yyfatal(const char *s) 102 { 103 yyerror(s); 104 exit(EXIT_FAILURE); 105 } 106 107 void 108 yyerror(const char *s) 109 { 110 printf("line %d: %s at [%s]\n", lineno, s, yytext); 111 } 112 113 114 int 115 parse(FILE *fp, struct pfioc_states* s) 116 { 117 yyin = fp; 118 119 lineno = 1; 120 121 states = s; 122 allocated = 0; 123 memset(s, 0, sizeof(*s)); 124 125 if (yyparse()) { 126 printf("parse failed, line %d.\n", lineno); 127 return(-1); 128 } 129 130 return(0); 131 } 132