fix service.cgi hangs if the initscript of an addon dosn't close output
[people/pmueller/ipfire-2.x.git] / src / misc-progs / wirelessctrl.c
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1/* IPCop helper program - wirelessctrl
2 *
3 * This program is distributed under the terms of the GNU General Public
4 * Licence. See the file COPYING for details.
5 *
6 * (c) Alan Hourihane, 2003
0a56f193 7 *
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8 * $Id: wirelessctrl.c,v 1.2.2.5 2005/07/11 10:56:47 franck78 Exp $
9 *
10 */
11
12#include "libsmooth.h"
13#include <stdio.h>
14#include <stdlib.h>
15#include <unistd.h>
16#include <fcntl.h>
17#include <string.h>
18#include <sys/types.h>
19#include <sys/stat.h>
20#include <signal.h>
21#include "setuid.h"
42dc0090 22#include <errno.h>
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23
24FILE *fd = NULL;
25char blue_dev[STRING_SIZE] = "";
26char command[STRING_SIZE];
27
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28void exithandler(void)
29{
30 /* added comment mark to the drop rules to be able to collect the bytes by the collectd */
31 if(strlen(blue_dev))
32 {
33 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
34 safe_system(command);
35 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
36 safe_system(command);
37 }
38
39 if (fd)
40 fclose(fd);
41}
42
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43int main(void)
44{
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45 char green_dev[STRING_SIZE] = "";
46 char buffer[STRING_SIZE];
47 char *index, *ipaddress, *macaddress, *enabled;
48 struct keyvalue *kv = NULL;
49
50 if (!(initsetuid()))
51 exit(1);
52
53 /* flush wireless iptables */
54 safe_system("/sbin/iptables -F WIRELESSINPUT > /dev/null 2> /dev/null");
55 safe_system("/sbin/iptables -F WIRELESSFORWARD > /dev/null 2> /dev/null");
56
57 memset(buffer, 0, STRING_SIZE);
58
59 /* Init the keyvalue structure */
60 kv=initkeyvalues();
61
62 /* Read in the current values */
63 if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings"))
64 {
65 fprintf(stderr, "Cannot read ethernet settings\n");
66 exit(1);
67 }
68
69 /* Read in the firewall values */
70 if (!readkeyvalues(kv, CONFIG_ROOT "/optionsfw/settings"))
71 {
72 fprintf(stderr, "Cannot read optionsfw settings\n");
73 exit(1);
74 }
75
76 /* Get the GREEN interface details */
77 if(!findkey(kv, "GREEN_DEV", green_dev))
78 {
79 fprintf(stderr, "Cannot read GREEN_DEV\n");
80 exit(1);
81 }
82 if (!VALID_DEVICE(green_dev))
83 {
84 fprintf(stderr, "Bad GREEN_DEV: %s\n", green_dev);
85 exit(1);
86 }
87 /* Get the BLUE interface details */
88 if(!findkey(kv, "BLUE_DEV", blue_dev))
89 {
90 fprintf(stderr, "Cannot read BLUE_DEV\n");
91 exit(1);
92 }
93 if (strlen(blue_dev) && !VALID_DEVICE(blue_dev))
94 {
95 fprintf(stderr, "Bad BLUE_DEV: %s\n", blue_dev);
96 exit(1);
97 }
98 if(! strlen(blue_dev) > 0)
99 {
100 fprintf(stderr, "No BLUE interface\n");
101 exit(0);
102 }
103
104 /* with this rule you can disable the logging of the dropped wireless input packets*/
9fb6a10b 105 if(!findkey(kv, "DROPWIRELESSINPUT", buffer) || strcmp(buffer,"off")){
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106 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -j LOG --log-prefix 'DROP_Wirelessinput'", blue_dev);
107 safe_system(command);
108 }
109 /* with this rule you can disable the logging of the dropped wireless forward packets*/
9fb6a10b 110 if(!findkey(kv, "DROPWIRELESSFORWARD", buffer) || strcmp(buffer,"off")){
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111 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -j LOG --log-prefix 'DROP_Wirelessforward'", blue_dev);
112 safe_system(command);
113 }
114
115 /* register exit handler to ensure the block rule is always present */
116 atexit(exithandler);
117
118 if (!(fd = fopen(CONFIG_ROOT "/wireless/config", "r")))
119 {
120 exit(0);
121 }
122 while (fgets(buffer, STRING_SIZE, fd))
123 {
124 buffer[strlen(buffer) - 1] = 0;
125
126 index = strtok(buffer, ",");
127 ipaddress = strtok(NULL, ",");
128 macaddress = strtok(NULL, ",");
129 enabled = strtok(NULL, ",");
130
131 if (!strncmp(enabled, "on", 2)) {
132
133 /* both specified, added security */
134 if ((strlen(macaddress) == 17) &&
135 (VALID_IP(ipaddress))) {
136 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -m mac --mac-source %s -s %s -i %s -j ACCEPT", macaddress, ipaddress, blue_dev);
137 safe_system(command);
138 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -s %s -i %s -o ! %s -j ACCEPT", macaddress, ipaddress, blue_dev, green_dev);
139 safe_system(command);
140 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -s %s -i %s -j DMZHOLES", macaddress, ipaddress, blue_dev);
141 safe_system(command);
142 } else {
143
144 /* correctly formed mac address is 17 chars */
145 if (strlen(macaddress) == 17) {
146 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -m mac --mac-source %s -i %s -j ACCEPT", macaddress, blue_dev);
147 safe_system(command);
148 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -i %s -o ! %s -j ACCEPT", macaddress, blue_dev, green_dev);
149 safe_system(command);
150 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -i %s -j DMZHOLES", macaddress, blue_dev);
151 safe_system(command);
152 }
153
154 if (VALID_IP(ipaddress)) {
155 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -s %s -i %s -j ACCEPT", ipaddress, blue_dev);
156 safe_system(command);
157 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -s %s -i %s -o ! %s -j ACCEPT", ipaddress, blue_dev, green_dev);
158 safe_system(command);
159 snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -s %s -i %s -j DMZHOLES", ipaddress, blue_dev);
160 safe_system(command);
161 }
162 }
163 }
164 }
165
166 return 0;
900832fa 167}