int dhcp6c_main(int argc, char **argv)
{
int ipv6_type, dns6_auto, lan6_auto, is_need_notify_radvd;
char *dns6_new, *lan_addr6_new;
char addr6s[INET6_ADDRSTRLEN];
// char *wan_ifname = safe_getenv("interface");
ipv6_type = get_ipv6_type();
if (ipv6_type != IPV6_NATIVE_DHCP6)
return 0;
is_need_notify_radvd = 0;
lan6_auto = nvram_get_int("ip6_lan_auto");
if (lan6_auto) {
lan_addr6_new = get_ifaddr6(IFNAME_BR, 0, addr6s);
if (store_lan_addr6(lan_addr6_new))
is_need_notify_radvd = 1;
}
dns6_auto = nvram_get_int("ip6_dns_auto");
if (dns6_auto) {
dns6_new = getenv("new_domain_name_servers");
if (store_wan_dns6(dns6_new)) {
update_resolvconf(0, 0);
is_need_notify_radvd = 1;
}
}
if (is_need_notify_radvd || !pids("radvd"))
reload_radvd();
return 0;
}
static void
on_client_ifup(void)
{
char buf[256];
nvram_set_int_temp("vpnc_state_t", 1);
buf[0] = 0;
if (nvram_get_int("vpnc_pdns") > 0) {
int i, i_dns, buf_len;
char *value;
char foption[32], fdns[128];
for (i=0, i_dns=0; i < 20 && i_dns < 3; i++) {
sprintf(foption, "foreign_option_%d", i);
value = getenv(foption);
if (value) {
fdns[0] = 0;
if (sscanf(value, "dhcp-option DNS %s", fdns) == 1) {
buf_len = strlen(buf);
snprintf(buf + buf_len, sizeof(buf) - buf_len, "%s%s", (buf_len) ? " " : "", fdns);
i_dns++;
}
}
}
}
nvram_set_temp("vpnc_dns_t", buf);
if (strlen(buf) > 0)
update_resolvconf(0, 0);
}
void
restore_dns_from_vpnc(void)
{
char *vpnc_dns = nvram_safe_get("vpnc_dns_t");
if (*vpnc_dns) {
nvram_set_temp("vpnc_dns_t", "");
update_resolvconf(0, 0);
}
}
/*
* renew: This argument is used when a DHCP lease is renewed. All of
* the paramaters are set in enviromental variables. This argument is
* used when the interface is already configured, so the IP address,
* will not change, however, the other DHCP paramaters, such as the
* default gateway, subnet mask, and dns server may change.
*/
static int
renew(void)
{
char *wan_ifname = safe_getenv("interface");
char *value;
char tmp[100], prefix[] = "wanXXXXXXXXXX_";
int unit;
if ((unit = wan_ifunit(wan_ifname)) < 0)
strcpy(prefix, "wanx_");
else
snprintf(prefix, sizeof(prefix), "wan%d_", unit);
if (!(value = getenv("subnet")) || !nvram_match(strcat_r(prefix, "netmask", tmp), trim_r(value)))
return bound();
if (!(value = getenv("router")) || !nvram_match(strcat_r(prefix, "gateway", tmp), trim_r(value)))
return bound();
if ((value = getenv("dns")) && !nvram_match(strcat_r(prefix, "dns", tmp), trim_r(value))) {
nvram_set(strcat_r(prefix, "dns", tmp), trim_r(value));
#if 0
update_resolvconf();
#else
add_dns(wan_ifname);
#endif
}
if ((value = getenv("wins")))
nvram_set(strcat_r(prefix, "wins", tmp), trim_r(value));
#if 0
if ((value = getenv("hostname")))
sethostname(trim_r(value), strlen(value) + 1);
#endif
if ((value = getenv("domain")))
nvram_set(strcat_r(prefix, "domain", tmp), trim_r(value));
if ((value = getenv("lease"))) {
nvram_set(strcat_r(prefix, "lease", tmp), trim_r(value));
expires(wan_ifname, atoi(value));
}
logmessage("dhcp client", "%s IP: %s from %s (prefix: %s)",
udhcpstate,
nvram_safe_get(strcat_r(prefix, "ipaddr", tmp)),
nvram_safe_get(strcat_r(prefix, "gateway", tmp)), prefix);
if (unit == 0)
update_wan_status(1);
wanmessage("");
dprintf("done\n");
return 0;
}
static void
on_client_ifup(void)
{
int i, i_dns = 0;
char buf[256];
char *script_name = VPN_CLIENT_UPDOWN_SCRIPT;
nvram_set_int_temp("vpnc_state_t", 1);
buf[0] = 0;
if (nvram_get_int("vpnc_pdns") > 0) {
int buf_len;
char *value;
char foption[32], fdns[128];
for (i = 0; i < 20 && i_dns < 3; i++) {
sprintf(foption, "foreign_option_%d", i);
value = getenv(foption);
if (value) {
fdns[0] = 0;
if (sscanf(value, "dhcp-option DNS %s", fdns) == 1) {
buf_len = strlen(buf);
snprintf(buf + buf_len, sizeof(buf) - buf_len, "%s%s", (buf_len) ? " " : "", fdns);
i_dns++;
if (i_dns == 1)
setenv("DNS1", fdns, 1);
else if (i_dns == 2)
setenv("DNS2", fdns, 1);
}
}
}
}
nvram_set_temp("vpnc_dns_t", buf);
if (strlen(buf) > 0)
update_resolvconf(0, 0);
if (check_if_file_exist(script_name)) {
for (i = 0; i < ARRAY_SIZE(env_ovpn); i++)
setenv(env_pppd[i], safe_getenv(env_ovpn[i]), 1);
doSystem("%s %s", script_name, "up");
for (i = 0; i < ARRAY_SIZE(env_ovpn); i++)
unsetenv(env_pppd[i]);
}
if (i_dns > 1)
unsetenv("DNS2");
if (i_dns > 0)
unsetenv("DNS1");
}
void full_restart_ipv6(int ipv6_type_old)
{
int ipv6_type = get_ipv6_type();
int ipv6_toggled = ((ipv6_type == IPV6_DISABLED || ipv6_type_old == IPV6_DISABLED) && (ipv6_type != ipv6_type_old)) ? 1 : 0;
if (ipv6_toggled) {
stop_lltd();
stop_httpd();
}
stop_upnp();
stop_dhcp6c();
stop_dns_dhcpd();
if (ipv6_type == IPV6_DISABLED) {
clear_all_route6();
clear_all_addr6();
clear_if_neigh6(IFNAME_BR);
stop_sit_tunnel();
reset_lan6_vars();
reset_wan6_vars();
control_if_ipv6_all(0);
set_libc_gai(1);
update_resolvconf(0, 1);
reload_nat_modules();
restart_firewall();
start_dns_dhcpd(0);
} else {
set_libc_gai(0);
control_if_ipv6_all(1);
clear_all_addr6();
reset_lan6_vars();
reload_lan_addr6();
full_restart_wan();
if (!is_dns_dhcpd_run())
start_dns_dhcpd(0);
}
if (ipv6_toggled) {
start_httpd(0);
start_lltd();
}
}
int
ipup_vpnc_main(int argc, char **argv)
{
char buf[256];
char *script_name = VPN_CLIENT_UPDOWN_SCRIPT;
char *ifname = safe_getenv("IFNAME");
char *gw = getenv("IPREMOTE");
umask(0000);
vpnc_route_to_remote_lan(ifname, gw, 1);
vpnc_route_dgw(ifname, gw, 1);
set_vpn_balancing(ifname);
nvram_set_int_temp("vpnc_state_t", 1);
buf[0] = 0;
if (nvram_get_int("vpnc_pdns") > 0) {
char *value;
value = getenv("DNS1");
if (value)
snprintf(buf, sizeof(buf), "%s", value);
value = getenv("DNS2");
if (value && strcmp(value, buf) != 0) {
int buf_len = strlen(buf);
snprintf(buf + buf_len, sizeof(buf) - buf_len, "%s%s", (buf_len) ? " " : "", value);
}
}
nvram_set_temp("vpnc_dns_t", buf);
if (strlen(buf) > 0)
update_resolvconf(0, 0);
if (check_if_file_exist(script_name))
doSystem("%s %s", script_name, "up");
return 0;
}
static void
on_client_ifup(void)
{
#define ENV_SCAN_MAX 20
int i, i_dns = 0, i_wins = 0, i_dom = 0, vpnc_pdns;
char buf[256], foption[32], fvalue[128], *value;
nvram_set_int_temp("vpnc_state_t", 1);
vpnc_pdns = nvram_get_int("vpnc_pdns");
buf[0] = 0;
for (i = 0; i < ENV_SCAN_MAX; i++) {
snprintf(foption, sizeof(foption), "foreign_option_%d", i);
value = getenv(foption);
if (value) {
memset(fvalue, 0, sizeof(fvalue));
if (sscanf(value, "dhcp-option DNS %127s", fvalue) == 1) {
if (vpnc_pdns > 0) {
int buf_len = strlen(buf);
snprintf(buf + buf_len, sizeof(buf) - buf_len, "%s%s", (buf_len) ? " " : "", fvalue);
}
i_dns++;
if (i_dns == 1)
setenv("DNS1", fvalue, 1);
else if (i_dns == 2)
setenv("DNS2", fvalue, 1);
} else if (sscanf(value, "dhcp-option WINS %127s", fvalue) == 1) {
i_wins++;
if (i_wins == 1)
setenv("WINS1", fvalue, 1);
else if (i_wins == 2)
setenv("WINS2", fvalue, 1);
} else if (sscanf(value, "dhcp-option DOMAIN %127s", fvalue) == 1) {
i_dom++;
if (i_dom == 1) {
if (vpnc_pdns > 0)
nvram_set_temp("vpnc_dom_t", fvalue);
setenv("DOMAIN", fvalue, 1);
}
}
}
if (i_dom >= 1 && i_wins >= 2 && i_dns >= 2)
break;
}
nvram_set_temp("vpnc_dns_t", buf);
if (strlen(buf) > 0)
update_resolvconf(0, 0);
call_client_script(VPN_CLIENT_UPDOWN_SCRIPT, "up");
if (i_dom > 0)
unsetenv("DOMAIN");
if (i_wins > 1)
unsetenv("WINS2");
if (i_wins > 0)
unsetenv("WINS1");
if (i_dns > 1)
unsetenv("DNS2");
if (i_dns > 0)
unsetenv("DNS1");
}
