[people/teissler/ipfire-2.x.git] / src / misc-progs / wirelessctrl.c

/* IPCop helper program - wirelessctrl
 *
 * This program is distributed under the terms of the GNU General Public
 * Licence.  See the file COPYING for details.
 *
 * (c) Alan Hourihane, 2003
 *
 */

#include "libsmooth.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include "setuid.h"
#include <errno.h>

FILE *fd = NULL;
char blue_dev[STRING_SIZE] = "";
char command[STRING_SIZE];

void exithandler(void) {
	/* added comment mark to the drop rules to be able to collect the bytes by the collectd */
	if (strlen(blue_dev) > 0) {
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
		safe_system(command);
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
		safe_system(command);
	}

	if (fd)
		fclose(fd);
}

int main(void) {
	char green_dev[STRING_SIZE] = "";
	char buffer[STRING_SIZE];
	char *index, *ipaddress, *macaddress, *enabled;
	struct keyvalue *kv = NULL;

	if (!(initsetuid()))
		exit(1);

	/* flush wireless iptables */
	safe_system("/sbin/iptables -F WIRELESSINPUT > /dev/null 2> /dev/null");
	safe_system("/sbin/iptables -F WIRELESSFORWARD > /dev/null 2> /dev/null");

	memset(buffer, 0, STRING_SIZE);

	/* Init the keyvalue structure */
	kv=initkeyvalues();

	/* Read in the current values */
	if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings")) {
		fprintf(stderr, "Cannot read ethernet settings\n");
		exit(1);
	}

	/* Read in the firewall values */
	if (!readkeyvalues(kv, CONFIG_ROOT "/optionsfw/settings")) {
		fprintf(stderr, "Cannot read optionsfw settings\n");
		exit(1);
	}

	/* Get the GREEN interface details */
	if (findkey(kv, "GREEN_DEV", green_dev) > 0) {
		if (!VALID_DEVICE(green_dev)) {
			fprintf(stderr, "Bad GREEN_DEV: %s\n", green_dev);
			exit(1);
		}
	}

	/* Get the BLUE interface details */
	if (findkey(kv, "BLUE_DEV", blue_dev) > 0) {
		if ((strlen(blue_dev) > 0) && !VALID_DEVICE(blue_dev)) {
			fprintf(stderr, "Bad BLUE_DEV: %s\n", blue_dev);
			exit(1);
		}
	}

	if (strlen(blue_dev) == 0) {
		exit(0);
	}

	if ((fd = fopen(CONFIG_ROOT "/wireless/nodrop", "r")))
		return 0;

	/* register exit handler to ensure the block rule is always present */
	atexit(exithandler);

	if (!(fd = fopen(CONFIG_ROOT "/wireless/config", "r"))) {
		exit(0);
	}

	/* restrict blue access tp the proxy port */
	if (findkey(kv, "DROPPROXY", buffer) && strcmp(buffer, "on") == 0) {
		/* Read the proxy values */
		if (!readkeyvalues(kv, CONFIG_ROOT "/proxy/settings") || !(findkey(kv, "PROXY_PORT", buffer))) {
			fprintf(stderr, "Cannot read proxy settings\n");
			exit(1);
		}

		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -p tcp  ! --dport %s -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev, buffer);
		safe_system(command);
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -p tcp  ! --dport %s -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev, buffer);
		safe_system(command);
	}

	/* not allow blue to acces a samba server running on local fire*/
	if (findkey(kv, "DROPSAMBA", buffer) && strcmp(buffer, "on") == 0) {
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -p tcp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
		safe_system(command);
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -p tcp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
		safe_system(command);
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -p udp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
		safe_system(command);
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -p udp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
		safe_system(command);
	}

	while (fgets(buffer, STRING_SIZE, fd)) {
		buffer[strlen(buffer) - 1] = 0;

		index = strtok(buffer, ",");
		ipaddress = strtok(NULL, ",");
		macaddress = strtok(NULL, ",");
		enabled = strtok(NULL, ",");

		if (strncmp(enabled, "on", 2) != 0) {
			/* both specified, added security */
			if ((strlen(macaddress) == 17) && (VALID_IP_AND_MASK(ipaddress))) {
				snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -m mac --mac-source %s -s %s -i %s -j ACCEPT", macaddress, ipaddress, blue_dev);
				safe_system(command);
				snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -s %s -i %s -j RETURN", macaddress, ipaddress, blue_dev);
				safe_system(command);
			} else {
				/* correctly formed mac address is 17 chars */
				if (strlen(macaddress) == 17) {
					snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -m mac --mac-source %s -i %s -j ACCEPT", macaddress, blue_dev);
					safe_system(command);
					snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -i %s -j RETURN", macaddress, blue_dev);
					safe_system(command);
				}

				if (VALID_IP_AND_MASK(ipaddress)) {
					snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -s %s -i %s -j ACCEPT", ipaddress, blue_dev);
					safe_system(command);
					snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -s %s -i %s -j RETURN", ipaddress, blue_dev);
					safe_system(command);
				}
			}
		}
	}

	/* with this rule you can disable the logging of the dropped wireless input packets*/
	if (findkey(kv, "DROPWIRELESSINPUT", buffer) && strcmp(buffer, "on") == 0) {
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -j LOG --log-prefix 'DROP_Wirelessinput'", blue_dev);
		safe_system(command);
	}

	/* with this rule you can disable the logging of the dropped wireless forward packets*/
	if (findkey(kv, "DROPWIRELESSFORWARD", buffer) && strcmp(buffer, "on") == 0) {
		snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -j LOG --log-prefix 'DROP_Wirelessforward'", blue_dev);
		safe_system(command);
	}

	return 0;
}
Commit	Line	Data
900832fa CS	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	*
900832fa CS	8	*/
	9
	10	#include "libsmooth.h"
	11	#include <stdio.h>
	12	#include <stdlib.h>
	13	#include <unistd.h>
	14	#include <fcntl.h>
	15	#include <string.h>
	16	#include <sys/types.h>
	17	#include <sys/stat.h>
	18	#include <signal.h>
	19	#include "setuid.h"
42dc0090	20	#include <errno.h>
900832fa CS	21
	22	FILE *fd = NULL;
	23	char blue_dev[STRING_SIZE] = "";
	24	char command[STRING_SIZE];
	25
d69bf619 MT	26	void exithandler(void) {
	27	/* added comment mark to the drop rules to be able to collect the bytes by the collectd */
	28	if (strlen(blue_dev) > 0) {
	29	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
	30	safe_system(command);
	31	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
	32	safe_system(command);
	33	}
	34
	35	if (fd)
	36	fclose(fd);
0a56f193 CS	37	}
0a56f193 CS	38
d69bf619 MT	39	int main(void) {
	40	char green_dev[STRING_SIZE] = "";
	41	char buffer[STRING_SIZE];
	42	char index, ipaddress, macaddress, enabled;
	43	struct keyvalue *kv = NULL;
	44
	45	if (!(initsetuid()))
	46	exit(1);
	47
	48	/* flush wireless iptables */
	49	safe_system("/sbin/iptables -F WIRELESSINPUT > /dev/null 2> /dev/null");
	50	safe_system("/sbin/iptables -F WIRELESSFORWARD > /dev/null 2> /dev/null");
	51
	52	memset(buffer, 0, STRING_SIZE);
	53
	54	/* Init the keyvalue structure */
	55	kv=initkeyvalues();
	56
	57	/* Read in the current values */
	58	if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings")) {
	59	fprintf(stderr, "Cannot read ethernet settings\n");
	60	exit(1);
	61	}
	62
	63	/* Read in the firewall values */
	64	if (!readkeyvalues(kv, CONFIG_ROOT "/optionsfw/settings")) {
	65	fprintf(stderr, "Cannot read optionsfw settings\n");
	66	exit(1);
	67	}
	68
	69	/* Get the GREEN interface details */
27ba58fb MT	70	if (findkey(kv, "GREEN_DEV", green_dev) > 0) {
	71	if (!VALID_DEVICE(green_dev)) {
	72	fprintf(stderr, "Bad GREEN_DEV: %s\n", green_dev);
	73	exit(1);
	74	}
d69bf619 MT	75	}
	76
	77	/* Get the BLUE interface details */
27ba58fb MT	78	if (findkey(kv, "BLUE_DEV", blue_dev) > 0) {
	79	if ((strlen(blue_dev) > 0) && !VALID_DEVICE(blue_dev)) {
	80	fprintf(stderr, "Bad BLUE_DEV: %s\n", blue_dev);
	81	exit(1);
	82	}
d69bf619 MT	83	}
d69bf619 MT	84
27ba58fb	85	if (strlen(blue_dev) == 0) {
d69bf619 MT	86	exit(0);
	87	}
	88
	89	if ((fd = fopen(CONFIG_ROOT "/wireless/nodrop", "r")))
	90	return 0;
	91
	92	/* register exit handler to ensure the block rule is always present */
	93	atexit(exithandler);
	94
	95	if (!(fd = fopen(CONFIG_ROOT "/wireless/config", "r"))) {
	96	exit(0);
	97	}
	98
	99	/* restrict blue access tp the proxy port */
ec36876e	100	if (findkey(kv, "DROPPROXY", buffer) && strcmp(buffer, "on") == 0) {
d69bf619 MT	101	/* Read the proxy values */
	102	if (!readkeyvalues(kv, CONFIG_ROOT "/proxy/settings") \|\| !(findkey(kv, "PROXY_PORT", buffer))) {
	103	fprintf(stderr, "Cannot read proxy settings\n");
	104	exit(1);
	105	}
	106
	107	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -p tcp ! --dport %s -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev, buffer);
	108	safe_system(command);
	109	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -p tcp ! --dport %s -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev, buffer);
	110	safe_system(command);
	111	}
	112
	113	/* not allow blue to acces a samba server running on local fire*/
ec36876e	114	if (findkey(kv, "DROPSAMBA", buffer) && strcmp(buffer, "on") == 0) {
d69bf619 MT	115	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -p tcp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
	116	safe_system(command);
	117	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -p tcp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
	118	safe_system(command);
	119	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -p udp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessforward'", blue_dev);
	120	safe_system(command);
	121	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -p udp -m multiport --ports 135,137,138,139,445,1025 -j DROP -m comment --comment 'DROP_Wirelessinput'", blue_dev);
	122	safe_system(command);
	123	}
	124
	125	while (fgets(buffer, STRING_SIZE, fd)) {
	126	buffer[strlen(buffer) - 1] = 0;
	127
	128	index = strtok(buffer, ",");
	129	ipaddress = strtok(NULL, ",");
	130	macaddress = strtok(NULL, ",");
	131	enabled = strtok(NULL, ",");
	132
	133	if (strncmp(enabled, "on", 2) != 0) {
	134	/* both specified, added security */
	135	if ((strlen(macaddress) == 17) && (VALID_IP_AND_MASK(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 -j RETURN", macaddress, ipaddress, blue_dev);
	139	safe_system(command);
	140	} else {
	141	/* correctly formed mac address is 17 chars */
	142	if (strlen(macaddress) == 17) {
	143	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -m mac --mac-source %s -i %s -j ACCEPT", macaddress, blue_dev);
	144	safe_system(command);
	145	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -m mac --mac-source %s -i %s -j RETURN", macaddress, blue_dev);
	146	safe_system(command);
0aaef8e9 CS	147	}
0aaef8e9 CS	148
d69bf619 MT	149	if (VALID_IP_AND_MASK(ipaddress)) {
	150	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -s %s -i %s -j ACCEPT", ipaddress, blue_dev);
	151	safe_system(command);
	152	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -s %s -i %s -j RETURN", ipaddress, blue_dev);
	153	safe_system(command);
0aaef8e9	154	}
d69bf619 MT	155	}
	156	}
	157	}
	158
	159	/* with this rule you can disable the logging of the dropped wireless input packets*/
ec36876e	160	if (findkey(kv, "DROPWIRELESSINPUT", buffer) && strcmp(buffer, "on") == 0) {
d69bf619 MT	161	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSINPUT -i %s -j LOG --log-prefix 'DROP_Wirelessinput'", blue_dev);
	162	safe_system(command);
	163	}
	164
	165	/* with this rule you can disable the logging of the dropped wireless forward packets*/
ec36876e	166	if (findkey(kv, "DROPWIRELESSFORWARD", buffer) && strcmp(buffer, "on") == 0) {
d69bf619 MT	167	snprintf(command, STRING_SIZE-1, "/sbin/iptables -A WIRELESSFORWARD -i %s -j LOG --log-prefix 'DROP_Wirelessforward'", blue_dev);
	168	safe_system(command);
	169	}
	170
	171	return 0;
900832fa	172	}