[people/pmueller/ipfire-2.x.git] / src / misc-progs / ipsecctrl.c

/*
 *
 * File originally from the Smoothwall project
 * (c) 2001 Smoothwall Team
 *
 */

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

/*
    This module is responsible for start stop of the vpn system.
    
    1) it allows AH & ESP to get in from interface where a vpn is mounted
        The NAT traversal is used on the udp 4500 port.

    2) it starts the ipsec daemon
        The RED interface is a problem because it can be up or down a startup.
        Then, the state change and it must not affect other VPN mounted on 
        other interface.
        Unfortunatly, openswan 1 cannot do that correctly. It cannot use an
        interface without restarting everything.

*/

void usage() {
        fprintf (stderr, "Usage:\n");
        fprintf (stderr, "\tipsecctrl S [connectionkey]\n");
        fprintf (stderr, "\tipsecctrl D [connectionkey]\n");
        fprintf (stderr, "\tipsecctrl R\n");
        fprintf (stderr, "\tipsecctrl I\n");
        fprintf (stderr, "\t\tS : Start/Restart Connection\n");
        fprintf (stderr, "\t\tD : Stop Connection\n");
        fprintf (stderr, "\t\tR : Reload Certificates and Secrets\n");
        fprintf (stderr, "\t\tI : Print Statusinfo\n");
}

/*
        ACCEPT the ipsec protocol ah, esp & udp (for nat traversal) on the specified interface
*/
void open_physical (char *interface, int nat_traversal_port) {
        char str[STRING_SIZE];

        // GRE ???
//        sprintf(str, "/sbin/iptables -A " phystable " -p 47  -i %s -j ACCEPT", interface);
//        safe_system(str);
        // ESP
//        sprintf(str, "/sbin/iptables -A " phystable " -p 50  -i %s -j ACCEPT", interface);
//        safe_system(str);
        // AH
//        sprintf(str, "/sbin/iptables -A " phystable " -p 51  -i %s -j ACCEPT", interface);
//        safe_system(str);
        // IKE

        sprintf(str, "/sbin/iptables -D IPSECINPUT -p udp -i %s --sport 500 --dport 500 -j ACCEPT >/dev/null 2>&1", interface);
        safe_system(str);
        sprintf(str, "/sbin/iptables -A IPSECINPUT -p udp -i %s --sport 500 --dport 500 -j ACCEPT", interface);
        safe_system(str);

        if (! nat_traversal_port) 
            return;

        sprintf(str, "/sbin/iptables -D IPSECINPUT -p udp -i %s --dport %i -j ACCEPT >/dev/null 2>&1", interface, nat_traversal_port);
        safe_system(str);
        sprintf(str, "/sbin/iptables -A IPSECINPUT -p udp -i %s --dport %i -j ACCEPT", interface, nat_traversal_port);
        safe_system(str);
}

void ipsec_norules() {
        /* clear input rules */
        safe_system("/sbin/iptables -F IPSECINPUT");
        safe_system("/sbin/iptables -F IPSECFORWARD");
        safe_system("/sbin/iptables -F IPSECOUTPUT");

}

/*
 return values from the vpn config file or false if not 'on'
*/
int decode_line (char *s, 
                char **key,
                char **name,
                char **type,
                char **interface
                ) {
        int count = 0;
        *key = NULL;
        *name = NULL;
        *type = NULL;

        if (s[strlen(s) - 1] == '\n')
                s[strlen(s) - 1] = '\0';

        char *result = strsep(&s, ",");
        while (result) {
                if (count == 0)
                        *key = result;
                if ((count == 1) && strcmp(result, "on") != 0)
                        return 0;       // a disabled line
                if (count == 2)
                        *name = result;
                if (count == 4)
                        *type = result;
                if (count == 27)
                        *interface = result;
                count++;
                result = strsep(&s, ",");
        }

        // check other syntax
        if (! *name)
            return 0;
                        
        if (strspn(*name, LETTERS_NUMBERS) != strlen(*name)) {
                fprintf(stderr, "Bad connection name: %s\n", *name);
                return 0;
        }

        if (! (strcmp(*type, "host") == 0 || strcmp(*type, "net") == 0)) {
                fprintf(stderr, "Bad connection type: %s\n", *type);
                return 0;
        }

        if (! (strcmp(*interface, "RED") == 0 || strcmp(*interface, "GREEN") == 0 ||
                strcmp(*interface, "ORANGE") == 0 || strcmp(*interface, "BLUE") == 0)) {
                fprintf(stderr, "Bad interface name: %s\n", *interface);
                return 0;
        }
        //it's a valid & active line
        return 1;
}

/*
    issue ipsec commmands to turn on connection 'name'
*/
void turn_connection_on (char *name, char *type) {
        char command[STRING_SIZE];
	if (file = fopen("/var/run/vpn-watch.pid", "r")) {
	    safe_system("kill -9 $(cat /var/run/vpn-watch.pid)");
	    safe_system("unlink /var/run/vpn-watch.pid");
	    close(file);
	}
        safe_system("/etc/rc.d/init.d/ipsec restart >/dev/null");
        safe_system("/usr/local/bin/vpn-watch &");
}
/*
    issue ipsec commmands to turn off connection 'name'
*/
void turn_connection_off (char *name) {
        char command[STRING_SIZE];
        memset(command, 0, STRING_SIZE);
        snprintf(command, STRING_SIZE - 1, 
                "/usr/sbin/ipsec whack --delete --name %s >/dev/null", name);
        safe_system(command);
        safe_system("/usr/sbin/ipsec whack --rereadall >/dev/null");
}


int main(int argc, char *argv[]) {

        char configtype[STRING_SIZE];
        char redtype[STRING_SIZE] = "";
        struct keyvalue *kv = NULL;
                        
        if (argc < 2) {
                usage();
                exit(1);
        }
        if (!(initsetuid()))
                exit(1);
                
 FILE *file = NULL;
                

        if (strcmp(argv[1], "I") == 0) {
                safe_system("/usr/sbin/ipsec whack --status");
                exit(0);
        }

        if (strcmp(argv[1], "R") == 0) {
                safe_system("/usr/sbin/ipsec whack --rereadall >/dev/null");
                exit(0);
        }

 /* Get vpnwatch pid */

 
        /* FIXME: workaround for pclose() issue - still no real idea why
         * this is happening */
        signal(SIGCHLD, SIG_DFL);

        /* handle operations that doesn't need start the ipsec system */
        if (argc == 2) {
                if (strcmp(argv[1], "D") == 0) {
                        /* Only shutdown pluto if it really is running */
                        /* Get pluto pid */
                        if (file = fopen("/var/run/pluto.pid", "r")) {
                                safe_system("/etc/rc.d/init.d/ipsec stop 2> /dev/null >/dev/null");
                                close(file);
                        }
                        ipsec_norules();
                        exit(0);
                }

        }

        /* read vpn config */
        kv=initkeyvalues();
        if (!readkeyvalues(kv, CONFIG_ROOT "/vpn/settings"))
        {
                fprintf(stderr, "Cannot read vpn settings\n");
                exit(1);
        }

        /* check is the vpn system is enabled */
        {
            char s[STRING_SIZE];
            findkey(kv, "ENABLED", s);
            freekeyvalues(kv);
            if (strcmp (s, "on") != 0)
                exit(0);
        }

        /* read interface settings */
        kv=initkeyvalues();
        if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings"))
        {
                fprintf(stderr, "Cannot read ethernet settings\n");
                exit(1);
        }
        if (!findkey(kv, "CONFIG_TYPE", configtype))
        {
                fprintf(stderr, "Cannot read CONFIG_TYPE\n");
                exit(1);
        }
        findkey(kv, "RED_TYPE", redtype);


        /* Loop through the config file to find physical interface that will accept IPSEC */
        int enable_red=0;       // states 0: not used
        int enable_green=0;     //        1: error condition
        int enable_orange=0;    //        2: good
        int enable_blue=0;
        char if_red[STRING_SIZE] = "";
        char if_green[STRING_SIZE] = "";
        char if_orange[STRING_SIZE] = "";
        char if_blue[STRING_SIZE] = "";
        char s[STRING_SIZE];

        if (!(file = fopen(CONFIG_ROOT "/vpn/config", "r"))) {
                fprintf(stderr, "Couldn't open vpn settings file");
                exit(1);
        }
        while (fgets(s, STRING_SIZE, file) != NULL) {
                char *key;
                char *name;
                char *type;
                char *interface;
                if (!decode_line(s,&key,&name,&type,&interface))
                    continue;
                /* search interface */
                if (!enable_red && strcmp (interface, "RED") == 0) {
                        // when RED is up, find interface name in special file
                        FILE *ifacefile = NULL;
                        if ((ifacefile = fopen(CONFIG_ROOT "/red/iface", "r"))) {
                            if (fgets(if_red, STRING_SIZE, ifacefile)) {
                                if (if_red[strlen(if_red) - 1] == '\n')
                                        if_red[strlen(if_red) - 1] = '\0';
                            }
                            fclose (ifacefile);

                            if (VALID_DEVICE(if_red))
                                enable_red+=2;                  // present and running
                        }
                }

                if (!enable_green && strcmp (interface, "GREEN") == 0) {
                        enable_green = 1;
                        findkey(kv, "GREEN_DEV", if_green);
                        if (VALID_DEVICE(if_green))
                            enable_green++;
                        else
                            fprintf(stderr, "IPSec enabled on green but green interface is invalid or not found\n");
                }

                if (!enable_orange && strcmp (interface, "ORANGE") == 0) {
                        enable_orange = 1;
                        findkey(kv, "ORANGE_DEV", if_orange);
                        if (VALID_DEVICE(if_orange))
                            enable_orange++;
                        else
                            fprintf(stderr, "IPSec enabled on orange but orange interface is invalid or not found\n");
                }

                if (!enable_blue && strcmp (interface, "BLUE") == 0) {
                        enable_blue++;
                        findkey(kv, "BLUE_DEV", if_blue);
                        if (VALID_DEVICE(if_blue))
                            enable_blue++;
                        else
                            fprintf(stderr, "IPSec enabled on blue but blue interface is invalid or not found\n");

                }
        }
        fclose(file);
        freekeyvalues(kv);

        // do nothing if something is in error condition
        if ((enable_red==1) || (enable_green==1) || (enable_orange==1) || (enable_blue==1) )
            exit(1);

        // exit if nothing to do
        if ( (enable_red+enable_green+enable_orange+enable_blue) == 0 )
            exit(0);

        // open needed ports
        // todo: read a nat_t indicator to allow or not openning UDP/4500
        if (enable_red==2)
                open_physical(if_red, 4500);

        if (enable_green==2)
                open_physical(if_green, 4500);

        if (enable_orange==2)
                open_physical(if_orange, 4500);

        if (enable_blue==2)
                open_physical(if_blue, 4500);

        // start the system
        if ((argc == 2) && strcmp(argv[1], "S") == 0) {
                exit(0);
        }

        // it is a selective start or stop
        // second param is only a number 'key'
        if ((argc == 2) || strspn(argv[2], NUMBERS) != strlen(argv[2])) {
                fprintf(stderr, "Bad arg\n");
                usage();
                exit(1);
        }

        // search the vpn pointed by 'key'
        if (!(file = fopen(CONFIG_ROOT "/vpn/config", "r"))) {
                fprintf(stderr, "Couldn't open vpn settings file");
                exit(1);
        }
        while (fgets(s, STRING_SIZE, file) != NULL) {
                char *key;
                char *name;
                char *type;
                char *interface;
                if (!decode_line(s,&key,&name,&type,&interface))
                        continue;

                // start/stop a vpn if belonging to specified interface
                if (strcmp(argv[1], interface) == 0 ) {
                            if (strcmp(argv[2], "0")==0)
                                turn_connection_off (name);
                            else
                                turn_connection_on (name, type);
                        continue;
                }
                // is it the 'key' requested ?
                if (strcmp(argv[2], key) != 0)
                        continue;
                // Start or Delete this Connection
                if (strcmp(argv[1], "S") == 0)
                        turn_connection_on (name, type);
                else
                if (strcmp(argv[1], "D") == 0)
                        turn_connection_off (name);
                else {
                        fprintf(stderr, "Bad command\n");
                        exit(1);
                }
        }
        fclose(file);
        return 0;
}
Commit	Line	Data
05207d69 MT	1	/*
	2	*
	3	* File originally from the Smoothwall project
	4	* (c) 2001 Smoothwall Team
	5	*
05207d69 MT	6	*/
	7
	8	#include "libsmooth.h"
	9	#include <stdio.h>
	10	#include <stdlib.h>
	11	#include <string.h>
	12	#include <unistd.h>
	13	#include <sys/types.h>
	14	#include <sys/stat.h>
	15	#include <signal.h>
	16	#include "setuid.h"
	17
5fd30232 MT	18	/*
	19	This module is responsible for start stop of the vpn system.
	20
	21	1) it allows AH & ESP to get in from interface where a vpn is mounted
69dcc425	22	The NAT traversal is used on the udp 4500 port.
5fd30232 MT	23
5fd30232 MT	24	2) it starts the ipsec daemon
69dcc425 CS	25	The RED interface is a problem because it can be up or down a startup.
	26	Then, the state change and it must not affect other VPN mounted on
	27	other interface.
	28	Unfortunatly, openswan 1 cannot do that correctly. It cannot use an
	29	interface without restarting everything.
5fd30232 MT	30
	31	*/
	32
05207d69	33	void usage() {
69dcc425 CS	34	fprintf (stderr, "Usage:\n");
	35	fprintf (stderr, "\tipsecctrl S [connectionkey]\n");
	36	fprintf (stderr, "\tipsecctrl D [connectionkey]\n");
	37	fprintf (stderr, "\tipsecctrl R\n");
db073a10	38	fprintf (stderr, "\tipsecctrl I\n");
69dcc425 CS	39	fprintf (stderr, "\t\tS : Start/Restart Connection\n");
	40	fprintf (stderr, "\t\tD : Stop Connection\n");
	41	fprintf (stderr, "\t\tR : Reload Certificates and Secrets\n");
db073a10	42	fprintf (stderr, "\t\tI : Print Statusinfo\n");
05207d69 MT	43	}
05207d69 MT	44
5fd30232	45	/*
69dcc425	46	ACCEPT the ipsec protocol ah, esp & udp (for nat traversal) on the specified interface
5fd30232 MT	47	*/
5fd30232 MT	48	void open_physical (char *interface, int nat_traversal_port) {
69dcc425 CS	49	char str[STRING_SIZE];
	50
	51	// GRE ???
db073a10	52	// sprintf(str, "/sbin/iptables -A " phystable " -p 47 -i %s -j ACCEPT", interface);
6652626c	53	// safe_system(str);
69dcc425	54	// ESP
db073a10	55	// sprintf(str, "/sbin/iptables -A " phystable " -p 50 -i %s -j ACCEPT", interface);
6652626c	56	// safe_system(str);
69dcc425	57	// AH
db073a10	58	// sprintf(str, "/sbin/iptables -A " phystable " -p 51 -i %s -j ACCEPT", interface);
6652626c	59	// safe_system(str);
69dcc425	60	// IKE
1f324fd7 AF	61
	62	sprintf(str, "/sbin/iptables -D IPSECINPUT -p udp -i %s --sport 500 --dport 500 -j ACCEPT >/dev/null 2>&1", interface);
	63	safe_system(str);
db073a10 AF	64	sprintf(str, "/sbin/iptables -A IPSECINPUT -p udp -i %s --sport 500 --dport 500 -j ACCEPT", interface);
db073a10 AF	65	safe_system(str);
69dcc425 CS	66
	67	if (! nat_traversal_port)
	68	return;
	69
1f324fd7 AF	70	sprintf(str, "/sbin/iptables -D IPSECINPUT -p udp -i %s --dport %i -j ACCEPT >/dev/null 2>&1", interface, nat_traversal_port);
1f324fd7 AF	71	safe_system(str);
db073a10 AF	72	sprintf(str, "/sbin/iptables -A IPSECINPUT -p udp -i %s --dport %i -j ACCEPT", interface, nat_traversal_port);
db073a10 AF	73	safe_system(str);
5fd30232 MT	74	}
	75
	76	void ipsec_norules() {
69dcc425	77	/* clear input rules */
db073a10 AF	78	safe_system("/sbin/iptables -F IPSECINPUT");
	79	safe_system("/sbin/iptables -F IPSECFORWARD");
	80	safe_system("/sbin/iptables -F IPSECOUTPUT");
69dcc425	81
05207d69 MT	82	}
05207d69 MT	83
5fd30232 MT	84	/*
	85	return values from the vpn config file or false if not 'on'
	86	*/
	87	int decode_line (char *s,
69dcc425 CS	88	char **key,
	89	char **name,
	90	char **type,
	91	char **interface
	92	) {
	93	int count = 0;
	94	*key = NULL;
	95	*name = NULL;
	96	*type = NULL;
	97
	98	if (s[strlen(s) - 1] == '\n')
	99	s[strlen(s) - 1] = '\0';
	100
	101	char *result = strsep(&s, ",");
	102	while (result) {
	103	if (count == 0)
	104	*key = result;
	105	if ((count == 1) && strcmp(result, "on") != 0)
	106	return 0; // a disabled line
	107	if (count == 2)
	108	*name = result;
	109	if (count == 4)
	110	*type = result;
	111	if (count == 27)
	112	*interface = result;
	113	count++;
	114	result = strsep(&s, ",");
	115	}
	116
	117	// check other syntax
	118	if (! *name)
	119	return 0;
	120
	121	if (strspn(name, LETTERS_NUMBERS) != strlen(name)) {
	122	fprintf(stderr, "Bad connection name: %s\n", *name);
	123	return 0;
	124	}
	125
	126	if (! (strcmp(type, "host") == 0 \|\| strcmp(type, "net") == 0)) {
	127	fprintf(stderr, "Bad connection type: %s\n", *type);
	128	return 0;
	129	}
	130
	131	if (! (strcmp(interface, "RED") == 0 \|\| strcmp(interface, "GREEN") == 0 \|\|
	132	strcmp(interface, "ORANGE") == 0 \|\| strcmp(interface, "BLUE") == 0)) {
	133	fprintf(stderr, "Bad interface name: %s\n", *interface);
	134	return 0;
	135	}
	136	//it's a valid & active line
	137	return 1;
5fd30232 MT	138	}
	139
	140	/*
	141	issue ipsec commmands to turn on connection 'name'
	142	*/
	143	void turn_connection_on (char name, char type) {
69dcc425	144	char command[STRING_SIZE];
734b67d2 AF	145	if (file = fopen("/var/run/vpn-watch.pid", "r")) {
	146	safe_system("kill -9 $(cat /var/run/vpn-watch.pid)");
	147	safe_system("unlink /var/run/vpn-watch.pid");
	148	close(file);
	149	}
	150	safe_system("/etc/rc.d/init.d/ipsec restart >/dev/null");
	151	safe_system("/usr/local/bin/vpn-watch &");
5fd30232 MT	152	}
	153	/*
	154	issue ipsec commmands to turn off connection 'name'
	155	*/
	156	void turn_connection_off (char *name) {
69dcc425	157	char command[STRING_SIZE];
69dcc425 CS	158	memset(command, 0, STRING_SIZE);
69dcc425 CS	159	snprintf(command, STRING_SIZE - 1,
98065e83	160	"/usr/sbin/ipsec whack --delete --name %s >/dev/null", name);
69dcc425	161	safe_system(command);
98065e83	162	safe_system("/usr/sbin/ipsec whack --rereadall >/dev/null");
5fd30232 MT	163	}
	164
	165
05207d69	166	int main(int argc, char *argv[]) {
5fd30232	167
69dcc425 CS	168	char configtype[STRING_SIZE];
	169	char redtype[STRING_SIZE] = "";
	170	struct keyvalue *kv = NULL;
	171
	172	if (argc < 2) {
	173	usage();
	174	exit(1);
	175	}
	176	if (!(initsetuid()))
	177	exit(1);
	178
fe6cda92	179	FILE *file = NULL;
69dcc425	180
ba149d47 AF	181
	182	if (strcmp(argv[1], "I") == 0) {
	183	safe_system("/usr/sbin/ipsec whack --status");
	184	exit(0);
	185	}
	186
	187	if (strcmp(argv[1], "R") == 0) {
	188	safe_system("/usr/sbin/ipsec whack --rereadall >/dev/null");
	189	exit(0);
	190	}
	191
dced81b2	192	/* Get vpnwatch pid */
fe6cda92	193
fe6cda92	194
69dcc425 CS	195	/* FIXME: workaround for pclose() issue - still no real idea why
	196	* this is happening */
	197	signal(SIGCHLD, SIG_DFL);
	198
	199	/* handle operations that doesn't need start the ipsec system */
	200	if (argc == 2) {
	201	if (strcmp(argv[1], "D") == 0) {
69dcc425 CS	202	/* Only shutdown pluto if it really is running */
	203	/* Get pluto pid */
	204	if (file = fopen("/var/run/pluto.pid", "r")) {
	205	safe_system("/etc/rc.d/init.d/ipsec stop 2> /dev/null >/dev/null");
	206	close(file);
	207	}
1f324fd7	208	ipsec_norules();
69dcc425 CS	209	exit(0);
	210	}
	211
69dcc425 CS	212	}
69dcc425 CS	213
69dcc425 CS	214	/* read vpn config */
	215	kv=initkeyvalues();
	216	if (!readkeyvalues(kv, CONFIG_ROOT "/vpn/settings"))
	217	{
	218	fprintf(stderr, "Cannot read vpn settings\n");
	219	exit(1);
	220	}
	221
	222	/* check is the vpn system is enabled */
	223	{
	224	char s[STRING_SIZE];
	225	findkey(kv, "ENABLED", s);
	226	freekeyvalues(kv);
	227	if (strcmp (s, "on") != 0)
	228	exit(0);
	229	}
	230
	231	/* read interface settings */
	232	kv=initkeyvalues();
	233	if (!readkeyvalues(kv, CONFIG_ROOT "/ethernet/settings"))
	234	{
	235	fprintf(stderr, "Cannot read ethernet settings\n");
	236	exit(1);
	237	}
	238	if (!findkey(kv, "CONFIG_TYPE", configtype))
	239	{
	240	fprintf(stderr, "Cannot read CONFIG_TYPE\n");
	241	exit(1);
	242	}
	243	findkey(kv, "RED_TYPE", redtype);
	244
	245
	246	/* Loop through the config file to find physical interface that will accept IPSEC */
	247	int enable_red=0; // states 0: not used
	248	int enable_green=0; // 1: error condition
	249	int enable_orange=0; // 2: good
	250	int enable_blue=0;
	251	char if_red[STRING_SIZE] = "";
	252	char if_green[STRING_SIZE] = "";
	253	char if_orange[STRING_SIZE] = "";
	254	char if_blue[STRING_SIZE] = "";
	255	char s[STRING_SIZE];
	256
	257	if (!(file = fopen(CONFIG_ROOT "/vpn/config", "r"))) {
	258	fprintf(stderr, "Couldn't open vpn settings file");
	259	exit(1);
	260	}
	261	while (fgets(s, STRING_SIZE, file) != NULL) {
	262	char *key;
	263	char *name;
	264	char *type;
	265	char *interface;
	266	if (!decode_line(s,&key,&name,&type,&interface))
	267	continue;
	268	/* search interface */
	269	if (!enable_red && strcmp (interface, "RED") == 0) {
	270	// when RED is up, find interface name in special file
	271	FILE *ifacefile = NULL;
	272	if ((ifacefile = fopen(CONFIG_ROOT "/red/iface", "r"))) {
	273	if (fgets(if_red, STRING_SIZE, ifacefile)) {
	274	if (if_red[strlen(if_red) - 1] == '\n')
	275	if_red[strlen(if_red) - 1] = '\0';
	276	}
	277	fclose (ifacefile);
278
279	if (VALID_DEVICE(if_red))
280	enable_red+=2; // present and running
281	}
282	}
283
284	if (!enable_green && strcmp (interface, "GREEN") == 0) {
285	enable_green = 1;
286	findkey(kv, "GREEN_DEV", if_green);
287	if (VALID_DEVICE(if_green))
288	enable_green++;
289	else
290	fprintf(stderr, "IPSec enabled on green but green interface is invalid or not found\n");
291	}
292
293	if (!enable_orange && strcmp (interface, "ORANGE") == 0) {
294	enable_orange = 1;
295	findkey(kv, "ORANGE_DEV", if_orange);
296	if (VALID_DEVICE(if_orange))
297	enable_orange++;
298	else
299	fprintf(stderr, "IPSec enabled on orange but orange interface is invalid or not found\n");
300	}
301
302	if (!enable_blue && strcmp (interface, "BLUE") == 0) {
303	enable_blue++;
304	findkey(kv, "BLUE_DEV", if_blue);
305	if (VALID_DEVICE(if_blue))
306	enable_blue++;
307	else
308	fprintf(stderr, "IPSec enabled on blue but blue interface is invalid or not found\n");
309
310	}
311	}
312	fclose(file);
313	freekeyvalues(kv);
314
315	// do nothing if something is in error condition
316	if ((enable_red==1) \|\| (enable_green==1) \|\| (enable_orange==1) \|\| (enable_blue==1) )
317	exit(1);
318
319	// exit if nothing to do
320	if ( (enable_red+enable_green+enable_orange+enable_blue) == 0 )
321	exit(0);
322
323	// open needed ports
324	// todo: read a nat_t indicator to allow or not openning UDP/4500
325	if (enable_red==2)
326	open_physical(if_red, 4500);
327
328	if (enable_green==2)
329	open_physical(if_green, 4500);
330
331	if (enable_orange==2)
332	open_physical(if_orange, 4500);
333
334	if (enable_blue==2)
335	open_physical(if_blue, 4500);
336
69dcc425 CS	337	// start the system
69dcc425 CS	338	if ((argc == 2) && strcmp(argv[1], "S") == 0) {
69dcc425 CS	339	exit(0);
	340	}
	341
	342	// it is a selective start or stop
	343	// second param is only a number 'key'
	344	if ((argc == 2) \|\| strspn(argv[2], NUMBERS) != strlen(argv[2])) {
69dcc425 CS	345	fprintf(stderr, "Bad arg\n");
	346	usage();
	347	exit(1);
	348	}
	349
	350	// search the vpn pointed by 'key'
	351	if (!(file = fopen(CONFIG_ROOT "/vpn/config", "r"))) {
69dcc425 CS	352	fprintf(stderr, "Couldn't open vpn settings file");
	353	exit(1);
	354	}
	355	while (fgets(s, STRING_SIZE, file) != NULL) {
	356	char *key;
	357	char *name;
	358	char *type;
	359	char *interface;
	360	if (!decode_line(s,&key,&name,&type,&interface))
	361	continue;
	362
	363	// start/stop a vpn if belonging to specified interface
	364	if (strcmp(argv[1], interface) == 0 ) {
	365	if (strcmp(argv[2], "0")==0)
	366	turn_connection_off (name);
	367	else
	368	turn_connection_on (name, type);
	369	continue;
	370	}
	371	// is it the 'key' requested ?
	372	if (strcmp(argv[2], key) != 0)
	373	continue;
	374	// Start or Delete this Connection
	375	if (strcmp(argv[1], "S") == 0)
	376	turn_connection_on (name, type);
	377	else
	378	if (strcmp(argv[1], "D") == 0)
	379	turn_connection_off (name);
	380	else {
69dcc425 CS	381	fprintf(stderr, "Bad command\n");
	382	exit(1);
	383	}
	384	}
	385	fclose(file);
69dcc425	386	return 0;
05207d69	387	}