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
|
Index: backend.c
===================================================================
RCS file: /cvs/gpe/base/gpe-shield/backend.c,v
retrieving revision 1.8
diff -u -r1.8 backend.c
--- backend.c 21 Jun 2004 08:54:53 -0000 1.8
+++ backend.c 16 Aug 2004 12:17:54 -0000
@@ -41,6 +41,7 @@
#define IPTABLES_CMD1 "/usr/sbin/iptables"
#define IPTABLES_CMD2 "/sbin/iptables"
#define IPTABLES_CMD3 "/usr/local/sbin/iptables"
+#define IPTABLES_CMD4 "/usr/bin/iptables"
static const char* IPTABLES_CMD = NULL;
@@ -144,13 +145,17 @@
void
do_clear(void)
{
- char* cmd = g_strdup_printf("%s %s",IPTABLES_CMD,"--flush");
+ char* cmd;
+
+ cmd = g_strdup_printf("%s %s",IPTABLES_CMD,"--flush");
system(cmd);
+
g_free(cmd);
cmd = g_strdup_printf("%s %s",IPTABLES_CMD,"-P INPUT ACCEPT"); /* reset input policy */
system(cmd);
g_free(cmd);
g_free(rule_info);
+
rule_info = NULL;
rule_count = 0;
}
@@ -387,6 +392,7 @@
pfd[0].fd = sock;
pfd[0].events = (POLLIN | POLLRDNORM | POLLRDBAND | POLLPRI);
+
while (poll (pfd, 1, -1) > 0)
{
if ((pfd[0].revents & POLLERR) || (pfd[0].revents & POLLHUP))
@@ -497,7 +503,8 @@
IPTABLES_CMD = IPTABLES_CMD2;
else if (!access(IPTABLES_CMD3,X_OK))
IPTABLES_CMD = IPTABLES_CMD3;
-
+ else if (!access(IPTABLES_CMD4,X_OK))
+ IPTABLES_CMD = IPTABLES_CMD4;
}
/* app mainloop */
@@ -505,8 +512,16 @@
int
suidloop (int csock)
{
- find_iptables();
-
+ find_iptables();
+
+ if (IPTABLES_CMD == NULL)
+ {
+ fprintf(stderr, "Iptables not found, exiting.\n");
+ close (sock);
+ unlink (PK_SOCKET);
+ exit (2);
+ }
+
sock = csock;
while (wait_message ()) ;
|
