X-Git-Url: http://git.ipfire.org/?p=people%2Fteissler%2Fipfire-2.x.git;a=blobdiff_plain;f=src%2Fmisc-progs%2Fipsecctrl.c;h=633004e2331d4d7044c77f4cf9d5f1dc82938a30;hp=763b81f96d25d27bd4eb350460ed5e095814ee50;hb=2795e579303e847e245204fe48141444a66a9235;hpb=05882fff6b855eda5469ae1977cf6fed77bdee03 diff --git a/src/misc-progs/ipsecctrl.c b/src/misc-progs/ipsecctrl.c index 763b81f96..633004e23 100644 --- a/src/misc-progs/ipsecctrl.c +++ b/src/misc-progs/ipsecctrl.c @@ -30,21 +30,16 @@ */ -#define phystable "IPSECPHYSICAL" -#define virtualtable "IPSECVIRTUAL" - 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"); -} - -void load_modules() { - safe_system("/sbin/modprobe ipsec"); + fprintf (stderr, "\t\tI : Print Statusinfo\n"); } /* @@ -54,108 +49,35 @@ 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); +// 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); +// 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); +// sprintf(str, "/sbin/iptables -A " phystable " -p 51 -i %s -j ACCEPT", interface); +// safe_system(str); // IKE - sprintf(str, "/sbin/iptables -A " phystable " -p udp -i %s --sport 500 --dport 500 -j ACCEPT", interface); + + sprintf(str, "/sbin/iptables -D IPSECINPUT -p udp -i %s --dport 500 -j ACCEPT >/dev/null 2>&1", interface); + safe_system(str); + sprintf(str, "/sbin/iptables -A IPSECINPUT -p udp -i %s --dport 500 -j ACCEPT", interface); safe_system(str); if (! nat_traversal_port) return; - sprintf(str, "/sbin/iptables -A " phystable " -p udp -i %s --dport %i -j ACCEPT", interface, nat_traversal_port); + 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); -} - -/* - Basic control for what can flow from/to ipsecX interfaces. - - rc.firewall call this chain just before ACCEPTing everything - from green (-i DEV_GREEN -j ACCEPT). -*/ -void open_virtual (void) { - // allow anything from any ipsec to go on all interface, including other ipsec - safe_system("/sbin/iptables -A " virtualtable " -i ipsec+ -j ACCEPT"); - //todo: BOT extension?; allowing ipsec0<<==port-list-filter==>>GREEN ? } void ipsec_norules() { /* clear input rules */ - safe_system("/sbin/iptables -F " phystable); - safe_system("/sbin/iptables -F " virtualtable); - - // unmap red alias ???? -} - - -void add_alias_interfaces(char *configtype, - char *redtype, - char *redif, - int offset) //reserve room for ipsec0=red, ipsec1=green, ipsec2=orange,ipsec3=blue -{ - FILE *file = NULL; - char s[STRING_SIZE]; - int alias=0; - - /* Check for CONFIG_TYPE=2 or 3 i.e. RED ethernet present. If not, - * exit gracefully. This is not an error... */ - if (!((strcmp(configtype, "1")==0) || (strcmp(configtype, "2")==0) || (strcmp(configtype, "3")==0) || (strcmp(configtype, "4")==0))) - return; - - /* Now check the RED_TYPE - aliases only work with STATIC. */ - if (!(strcmp(redtype, "STATIC")==0)) - return; - - /* Now set up the new aliases from the config file */ - if (!(file = fopen(CONFIG_ROOT "/ethernet/aliases", "r"))) - { - fprintf(stderr, "Unable to open aliases configuration file\n"); - return; - } - while (fgets(s, STRING_SIZE, file) != NULL && (offset+alias) < 16 ) - { - if (s[strlen(s) - 1] == '\n') - s[strlen(s) - 1] = '\0'; - int count = 0; - char *aliasip=NULL; - char *enabled=NULL; - char *comment=NULL; - char *sptr = strtok(s, ","); - while (sptr) - { - if (count == 0) - aliasip = sptr; - if (count == 1) - enabled = sptr; - else - comment = sptr; - count++; - sptr = strtok(NULL, ","); - } - - if (!(aliasip && enabled)) - continue; - - if (!VALID_IP(aliasip)) - { - fprintf(stderr, "Bad alias : %s\n", aliasip); - return; - } - - if (strcmp(enabled, "on") == 0) - { - memset(s, 0, STRING_SIZE); - snprintf(s, STRING_SIZE-1, "/usr/sbin/ipsec tncfg --attach --virtual ipsec%d --physical %s:%d >/dev/null", offset+alias, redif, alias); - safe_system(s); - alias++; - } - } + safe_system("/sbin/iptables -F IPSECINPUT"); + safe_system("/sbin/iptables -F IPSECFORWARD"); + safe_system("/sbin/iptables -F IPSECOUTPUT"); } /* @@ -164,8 +86,7 @@ void add_alias_interfaces(char *configtype, int decode_line (char *s, char **key, char **name, - char **type, - char **interface + char **type ) { int count = 0; *key = NULL; @@ -185,8 +106,6 @@ int decode_line (char *s, *name = result; if (count == 4) *type = result; - if (count == 27) - *interface = result; count++; result = strsep(&s, ","); } @@ -205,11 +124,6 @@ int decode_line (char *s, 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; } @@ -217,41 +131,48 @@ int decode_line (char *s, /* issue ipsec commmands to turn on connection 'name' */ -void turn_connection_on (char *name, char *type) { +void turn_connection_on(char *name, char *type) { + /* + * To bring up a connection, we need to reload the configuration + * and issue ipsec up afterwards. To make sure the connection + * is not established from the start, we bring it down in advance. + */ char command[STRING_SIZE]; - safe_system("/usr/sbin/ipsec auto --rereadsecrets >/dev/null"); - memset(command, 0, STRING_SIZE); + // Bring down the connection (if established). snprintf(command, STRING_SIZE - 1, - "/usr/sbin/ipsec auto --replace %s >/dev/null", name); + "/usr/sbin/ipsec down %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); - } + + // Reload the configuration into the daemon. + safe_system("/usr/sbin/ipsec reload >/dev/null 2>&1"); + + // Bring the connection up again. + snprintf(command, STRING_SIZE - 1, + "/usr/sbin/ipsec up %s >/dev/null", name); + safe_system(command); } + /* issue ipsec commmands to turn off connection 'name' */ void turn_connection_off (char *name) { + /* + * To turn off a connection, all SAs must be turned down. + * After that, the configuration must be reloaded. + */ char command[STRING_SIZE]; - memset(command, 0, STRING_SIZE); + // Bring down the connection. snprintf(command, STRING_SIZE - 1, - "/usr/sbin/ipsec auto --down %s >/dev/null", name); + "/usr/sbin/ipsec 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); - safe_system("/usr/sbin/ipsec auto --rereadsecrets >/dev/null"); -} + // Reload, so the connection is dropped. + safe_system("/usr/sbin/ipsec reload >/dev/null 2>&1"); +} int main(int argc, char *argv[]) { - char configtype[STRING_SIZE]; char redtype[STRING_SIZE] = ""; struct keyvalue *kv = NULL; @@ -265,14 +186,17 @@ int main(int argc, char *argv[]) { FILE *file = NULL; - /* Get vpnwatch pid */ - - if ( (argc == 2) && (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); - } - + + if (strcmp(argv[1], "I") == 0) { + safe_system("/usr/sbin/ipsec status"); + exit(0); + } + + if (strcmp(argv[1], "R") == 0) { + safe_system("/usr/sbin/ipsec reload >/dev/null 2>&1"); + exit(0); + } + /* FIXME: workaround for pclose() issue - still no real idea why * this is happening */ signal(SIGCHLD, SIG_DFL); @@ -280,25 +204,12 @@ int main(int argc, char *argv[]) { /* handle operations that doesn't need start the ipsec system */ if (argc == 2) { if (strcmp(argv[1], "D") == 0) { + safe_system("/usr/sbin/ipsec stop >/dev/null 2>&1"); 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")) @@ -342,111 +253,69 @@ int main(int argc, char *argv[]) { 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 - } + // 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 (!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 (VALID_DEVICE(if_red)) + enable_red++; + } - 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"); - } + // Check if GREEN is enabled. + findkey(kv, "GREEN_DEV", if_green); + if (VALID_DEVICE(if_green)) + enable_green++; - 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"); + // Check if ORANGE is enabled. + findkey(kv, "ORANGE_DEV", if_orange); + if (VALID_DEVICE(if_orange)) + enable_orange++; - } - } - fclose(file); - freekeyvalues(kv); + // Check if BLUE is enabled. + findkey(kv, "BLUE_DEV", if_blue); + if (VALID_DEVICE(if_blue)) + enable_blue++; - // do nothing if something is in error condition - if ((enable_red==1) || (enable_green==1) || (enable_orange==1) || (enable_blue==1) ) - exit(1); + freekeyvalues(kv); // exit if nothing to do - if ( (enable_red+enable_green+enable_orange+enable_blue) == 0 ) + 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) + if (enable_red > 0) open_physical(if_red, 4500); - if (enable_green==2) + if (enable_green > 0) open_physical(if_green, 4500); - if (enable_orange==2) + if (enable_orange > 0) open_physical(if_orange, 4500); - if (enable_blue==2) + if (enable_blue > 0) 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 ); - safe_system("/usr/local/bin/vpn-watch &"); + safe_system("/usr/sbin/ipsec restart >/dev/null"); 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"); + fprintf(stderr, "Bad arg: %s\n", argv[2]); 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); } @@ -454,33 +323,24 @@ int main(int argc, char *argv[]) { char *key; char *name; char *type; - char *interface; - if (!decode_line(s,&key,&name,&type,&interface)) + if (!decode_line(s,&key,&name,&type)) 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) + else if (strcmp(argv[1], "D") == 0) turn_connection_off (name); else { - ipsec_norules(); fprintf(stderr, "Bad command\n"); exit(1); } } fclose(file); + return 0; }