1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* $OpenBSD: lex.l,v 1.9 2002/08/04 04:15:50 provos Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Niels Provos.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
%x incl
%{
#include <sys/types.h>
#include <sys/tree.h>
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include <stdarg.h>
#include <string.h>
#include "intercept.h"
#include "systrace.h"
#include "y.tab.h"
extern int yyerror(const char *fmt, ...);
int yylex(void);
char *mystring;
int myoff;
#define YY_INPUT(buf,result,max_size) \
{ \
int len = strlen(mystring + myoff); \
if (max_size < len) \
len = max_size; \
if (len == 0) \
result = YY_NULL; \
else { \
memcpy(buf, mystring + myoff, len); \
myoff += len; \
result = len; \
} \
}
%}
%%
deny { return DENY; }
permit { return PERMIT; }
and { return AND; }
or { return OR; }
not { return NOT; }
match { return MATCH; }
then { return THEN; }
eq { return EQ; }
neq { return NEQ; }
sub { return SUB; }
nsub { return NSUB; }
inpath { return INPATH; }
log { return LOG; }
true { return TRUE; }
"->" { return THEN; }
\( { return LBRACE; }
\) { return RBRACE; }
[\$A-Za-z][\.\(\)\/A-Za-z_\-0-9]* { yylval.string = strdup(yytext); return STRING; }
[0-9]+ { yylval.number = atoi(yytext); return NUMBER; }
\"[^\"]+\" { char line[1024];
strlcpy(line, yytext + 1, sizeof(line));
line[strlen(line)-1] = '\0';
yylval.string = strdup(line);
return CMDSTRING; }
\[ { return LSQBRACE; }
\] { return RSQBRACE; }
\ { ; }
\n { ; }
\t { ; }
"#".*\n { ; }
. { yyerror("illegal token"); }
%%
#ifndef yywrap
int yywrap() { return 1; }
#endif
|
