- int count;
- char s[STRING_SIZE];
- char configtype[STRING_SIZE];
- char redtype[STRING_SIZE] = "";
- char command[STRING_SIZE];
- char *result;
- char *key;
- char *enabled;
- char *name;
- char *type;
- char *running;
- FILE *file = NULL;
- struct keyvalue *kv = NULL;
- char enablered[STRING_SIZE] = "off";
- char enableblue[STRING_SIZE] = "off";
- char redif[STRING_SIZE] = "";;
- char blueif[STRING_SIZE] = "";
- FILE *ifacefile = NULL;
-
- if (!(initsetuid()))
- exit(1);
-
- if (argc < 2) {
- usage();
- exit(1);
- }
-
- /* FIXME: workaround for pclose() issue - still no real idea why
- * this is happening */
- signal(SIGCHLD, SIG_DFL);
-
- /* Init the keyvalue structure */
- kv=initkeyvalues();
-
- /* Read in the current values */
- if (!readkeyvalues(kv, CONFIG_ROOT "/vpn/settings"))
- {
- fprintf(stderr, "Cannot read vpn settings\n");
- exit(1);
- }
-
- findkey(kv, "ENABLED", enablered);
- findkey(kv, "ENABLED_BLUE", enableblue);
-
- freekeyvalues(kv);
- 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);
- findkey(kv, "BLUE_DEV", blueif);
- freekeyvalues(kv);
- memset(redif, 0, STRING_SIZE);
-
- if ((ifacefile = fopen(CONFIG_ROOT "/red/iface", "r")))
- {
- if (fgets(redif, STRING_SIZE, ifacefile))
- {
- if (redif[strlen(redif) - 1] == '\n')
- redif[strlen(redif) - 1] = '\0';
- }
- fclose (ifacefile);
- ifacefile = NULL;
-
- if (!VALID_DEVICE(redif))
- {
- memset(redif, 0, STRING_SIZE);
- }
- }
-
- safe_system("/sbin/iptables -F IPSECRED");
- if (!strcmp(enablered, "on") && strlen(redif)) {
- ipsecrules("IPSECRED", redif);
- }
-
- safe_system("/sbin/iptables -F IPSECBLUE");
- if (!strcmp(enableblue, "on")) {
- if (VALID_DEVICE(blueif))
- ipsecrules("IPSECBLUE", blueif);
- else
- {
- fprintf(stderr, "IPSec enabled on blue but blue interface is invalid or not found\n");
- exit(1);
- }
- }
-
- /* Only shutdown pluto if it really is running */
- if (argc == 2) {
- if (strcmp(argv[1], "D") == 0) {
- int fd;
- /* Get pluto pid */
- if ((fd = open("/var/run/pluto.pid", O_RDONLY)) != -1) {
- safe_system("/etc/rc.d/init.d/ipsec stop 2> /dev/null >/dev/null");
- close(fd);
- }
- }
- }
-
- if ((strcmp(enablered, "on") || !strlen(redif)) && strcmp(enableblue, "on"))
- exit(0);
-
- if (argc == 2) {
- if (strcmp(argv[1], "S") == 0) {
- loadalgmodules();
- safe_system("/usr/sbin/ipsec tncfg --clear >/dev/null");
- safe_system("/etc/rc.d/init.d/ipsec restart >/dev/null");
- addaliasinterfaces(configtype, redtype, redif, enablered, enableblue);
- } else if (strcmp(argv[1], "R") == 0) {
- safe_system("/usr/sbin/ipsec auto --rereadall");
- } else {
- fprintf(stderr, "Bad arg\n");
- usage();
- exit(1);
- }
- } else if (strspn(argv[2], NUMBERS) == strlen(argv[2])) {
- 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) {
- if (s[strlen(s) - 1] == '\n')
- s[strlen(s) - 1] = '\0';
- running = strdup (s);
- result = strsep(&running, ",");
- count = 0;
- key = NULL;
- name = NULL;
- enabled = NULL;
- type = NULL;
- while (result) {
- if (count == 0)
- key = result;
- if (count == 1)
- enabled = result;
- if (count == 2)
- name = result;
- if (count == 4)
- type = result;
- count++;
- result = strsep(&running, ",");
- }
- if (strcmp(key, argv[2]) != 0)
- continue;
-
- if (!(name && enabled))
- continue;
-
- if (strspn(name, LETTERS_NUMBERS) != strlen(name)) {
- fprintf(stderr, "Bad connection name: %s\n", name);
- goto EXIT;
- }
-
- if (! (strcmp(type, "host") == 0 || strcmp(type, "net") == 0)) {
- fprintf(stderr, "Bad connection type: %s\n", type);
- goto EXIT;
- }
-
- if (strcmp(argv[1], "S") == 0 && strcmp(enabled, "on") == 0) {
- safe_system("/usr/sbin/ipsec auto --rereadsecrets >/dev/null");
- memset(command, 0, STRING_SIZE);
- snprintf(command, STRING_SIZE - 1,
- "/usr/sbin/ipsec auto --replace %s >/dev/null", name);
- safe_system(command);
- if (strcmp(type, "net") == 0) {
- memset(command, 0, STRING_SIZE);
- snprintf(command, STRING_SIZE - 1,
- "/usr/sbin/ipsec auto --asynchronous --up %s >/dev/null", name);
- safe_system(command);
- }
- } else if (strcmp(argv[1], "D") == 0) {
- safe_system("/usr/sbin/ipsec auto --rereadsecrets >/dev/null");
- memset(command, 0, STRING_SIZE);
- snprintf(command, STRING_SIZE - 1,
- "/usr/sbin/ipsec auto --down %s >/dev/null", name);
- safe_system(command);
- memset(command, 0, STRING_SIZE);
- snprintf(command, STRING_SIZE - 1,
- "/usr/sbin/ipsec auto --delete %s >/dev/null", name);
- safe_system(command);
- }
- }
- } else {
- fprintf(stderr, "Bad arg\n");
- usage();
- exit(1);
- }
-
-EXIT:
- if (file)
- fclose(file);
- return 0;
+
+ 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;
+
+ /* Get vpnwatch pid */
+
+ 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);
+
+ /* 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) {
+ ipsec_norules();
+ /* 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);
+ }
+ exit(0);
+ }
+
+ if (strcmp(argv[1], "R") == 0) {
+ safe_system("/usr/sbin/ipsec auto --rereadall");
+ exit(0);
+ }
+ }
+
+ /* clear iptables vpn rules */
+ ipsec_norules();
+
+ /* 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);
+
+ // then open the ipsecX
+ open_virtual();
+
+ // start the system
+ if ((argc == 2) && strcmp(argv[1], "S") == 0) {
+ load_modules();
+ safe_system("/usr/sbin/ipsec tncfg --clear >/dev/null");
+ safe_system("/etc/rc.d/init.d/ipsec restart >/dev/null");
+ add_alias_interfaces(configtype, redtype, if_red, (enable_red+enable_green+enable_orange+enable_blue) >>1 );
+ 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])) {
+ ipsec_norules();
+ fprintf(stderr, "Bad arg\n");
+ usage();
+ exit(1);
+ }
+
+ // search the vpn pointed by 'key'
+ if (!(file = fopen(CONFIG_ROOT "/vpn/config", "r"))) {
+ ipsec_norules();
+ 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 {
+ ipsec_norules();
+ fprintf(stderr, "Bad command\n");
+ exit(1);
+ }
+ }
+ fclose(file);
+ safe_system("/usr/local/bin/vpn-watch &");
+ return 0;