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      1 %{
      2 /*	$NetBSD: veriexecctl_conf.l,v 1.15 2011/05/24 12:06:25 joerg Exp $	*/
      3 
      4 /*-
      5  * Copyright 2005 Elad Efrat <elad (at) NetBSD.org>
      6  * Copyright 2005 Brett Lymn <blymn (at) netbsd.org>
      7  *
      8  * All rights reserved.
      9  *
     10  * This code has been donated to The NetBSD Foundation by the Author.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. The name of the author may not be used to endorse or promote products
     18  *    derived from this software withough specific prior written permission
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  *
     31  *
     32  */
     33 
     34 #include <stdio.h>
     35 #include <stdlib.h>
     36 #include <string.h>
     37 #include <err.h>
     38 
     39 #include <prop/proplib.h>
     40 
     41 #include "veriexecctl_parse.h"
     42 
     43 int yylex(void);
     44 
     45 extern size_t line;
     46 extern int verbose;
     47 
     48 static char *
     49 dequote(const char *s)
     50 {
     51 	size_t len;
     52 	const char *p;
     53 	char *buf, *q;
     54 
     55 	len = 0;
     56 	p = s;
     57 	while (*p) {
     58 		if (*p == '\\' && *(p+1))
     59 			++p;
     60 		++len;
     61 		++p;
     62 	}
     63 
     64 	buf = malloc(len + 1);
     65 	if (buf == NULL)
     66 		return NULL;
     67 
     68 	p = s;
     69 	q = buf;
     70 	while (*p) {
     71 		if (*p == '\\' && *(p+1))
     72 			++p;
     73 		*q++ = *p++;
     74 	}
     75 	*q++ = '\0';
     76 
     77 	return buf;
     78 }
     79 %}
     80 
     81 STRING		[0-9a-zA-Z]+
     82 PCHAR           (\\.|[^ \t])
     83 
     84 %option nounput
     85 %option noinput
     86 
     87 %%
     88 
     89 	/* path */
     90 \/{PCHAR}+	{
     91 			if ((yylval.string = dequote(yytext)) == NULL)
     92 				err(1, "Cannot allocate string");
     93 			return PATH;
     94 		}
     95 
     96 	/* string (fingerprint, type, options) */
     97 {STRING} 	{
     98 			if ((yylval.string = strdup(yytext)) == NULL)
     99 				err(1, "Cannot allocate string");
    100 			return STRING;
    101 		}
    102 
    103 	/* comments, white-outs */
    104 [ \t\r]		|
    105 #.*		;
    106 ^#.*\n		|
    107 #.*\n		|
    108 \\\n		|
    109 ^\n		{ line++; }
    110 
    111 	/* eol on a line with data. need a call to ioctl, return eol */
    112 \n		{
    113 			line++;
    114 			return EOL;
    115 		}
    116 
    117 ","		{
    118 			return TOKEN_COMMA;
    119 		}
    120 
    121 .		{
    122 			if (verbose)
    123 				warnx("Invalid character '%c' in line %zu",
    124 				    *yytext, line);
    125 		}
    126 
    127 %%
    128 
    129 int
    130 yywrap(void)
    131 {
    132 	return 1;
    133 }
    134