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
|
/* $FreeBSD$ */
/*
* Copyright (C) 1993-2001 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* Id: ports.c,v 1.9.4.1 2004/12/09 19:41:22 darrenr Exp
*/
#include <ctype.h>
#include "ipf.h"
/*
* check for possible presence of the port fields in the line
*/
int ports(seg, proto, pp, cp, tp, linenum)
char ***seg;
char *proto;
u_short *pp;
int *cp;
u_short *tp;
int linenum;
{
int comp = -1;
if (!*seg || !**seg || !***seg)
return 0;
if (!strcasecmp(**seg, "port") && *(*seg + 1) && *(*seg + 2)) {
(*seg)++;
if (ISALNUM(***seg) && *(*seg + 2)) {
if (portnum(**seg, proto, pp, linenum) == 0)
return -1;
(*seg)++;
if (!strcmp(**seg, "<>"))
comp = FR_OUTRANGE;
else if (!strcmp(**seg, "><"))
comp = FR_INRANGE;
else {
fprintf(stderr,
"%d: unknown range operator (%s)\n",
linenum, **seg);
return -1;
}
(*seg)++;
if (**seg == NULL) {
fprintf(stderr, "%d: missing 2nd port value\n",
linenum);
return -1;
}
if (portnum(**seg, proto, tp, linenum) == 0)
return -1;
} else if (!strcmp(**seg, "=") || !strcasecmp(**seg, "eq"))
comp = FR_EQUAL;
else if (!strcmp(**seg, "!=") || !strcasecmp(**seg, "ne"))
comp = FR_NEQUAL;
else if (!strcmp(**seg, "<") || !strcasecmp(**seg, "lt"))
comp = FR_LESST;
else if (!strcmp(**seg, ">") || !strcasecmp(**seg, "gt"))
comp = FR_GREATERT;
else if (!strcmp(**seg, "<=") || !strcasecmp(**seg, "le"))
comp = FR_LESSTE;
else if (!strcmp(**seg, ">=") || !strcasecmp(**seg, "ge"))
comp = FR_GREATERTE;
else {
fprintf(stderr, "%d: unknown comparator (%s)\n",
linenum, **seg);
return -1;
}
if (comp != FR_OUTRANGE && comp != FR_INRANGE) {
(*seg)++;
if (portnum(**seg, proto, pp, linenum) == 0)
return -1;
}
*cp = comp;
(*seg)++;
}
return 0;
}
|
