static int renew(char *ifname)
{
char *a, *b;
int changed;
_dprintf("%s: begin\n", __FUNCTION__);
unlink(renewing);
changed = env2nv("ip", "wan_ipaddr");
changed |= env2nv("subnet", "wan_netmask");
if (changed) {
ifconfig(ifname, IFUP, nvram_safe_get("wan_ipaddr"), nvram_safe_get("wan_netmask"));
}
if (get_wan_proto() == WP_L2TP) {
env2nv_gateway("wan_gateway_buf");
}
else {
a = strdup(nvram_safe_get("wan_gateway"));
env2nv_gateway("wan_gateway");
b = nvram_safe_get("wan_gateway");
if ((a) && (strcmp(a, b) != 0)) {
route_del(ifname, 0, "0.0.0.0", a, "0.0.0.0");
route_add(ifname, 0, "0.0.0.0", b, "0.0.0.0");
changed = 1;
}
free(a);
}
changed |= env2nv("domain", "wan_get_domain");
changed |= env2nv("dns", "wan_get_dns");
if ((a = getenv("lease")) != NULL) {
nvram_set("wan_lease", a);
expires(atoi(a));
}
if (changed) {
set_host_domain_name();
stop_dnsmasq();
dns_to_resolv();
start_dnsmasq();
}
_dprintf("wan_ipaddr=%s\n", nvram_safe_get("wan_ipaddr"));
_dprintf("wan_netmask=%s\n", nvram_safe_get("wan_netmask"));
_dprintf("wan_gateway=%s\n", nvram_safe_get("wan_gateway"));
_dprintf("wan_get_domain=%s\n", nvram_safe_get("wan_get_domain"));
_dprintf("wan_get_dns=%s\n", nvram_safe_get("wan_get_dns"));
_dprintf("wan_lease=%s\n", nvram_safe_get("wan_lease"));
_dprintf("%s: end\n", __FUNCTION__);
return 0;
}
static int bound(char *ifname)
{
_dprintf("%s: begin\n", __FUNCTION__);
unlink(renewing);
env2nv("ip", "wan_ipaddr");
env2nv("subnet", "wan_netmask");
env2nv_gateway("wan_gateway");
env2nv("dns", "wan_get_dns");
env2nv("domain", "wan_get_domain");
env2nv("lease", "wan_lease");
expires(atoi(safe_getenv("lease")));
_dprintf("wan_ipaddr=%s\n", nvram_safe_get("wan_ipaddr"));
_dprintf("wan_netmask=%s\n", nvram_safe_get("wan_netmask"));
_dprintf("wan_gateway=%s\n", nvram_safe_get("wan_gateway"));
_dprintf("wan_get_domain=%s\n", nvram_safe_get("wan_get_domain"));
_dprintf("wan_get_dns=%s\n", nvram_safe_get("wan_get_dns"));
_dprintf("wan_lease=%s\n", nvram_safe_get("wan_lease"));
ifconfig(ifname, IFUP, nvram_safe_get("wan_ipaddr"), nvram_safe_get("wan_netmask"));
if (get_wan_proto() == WP_L2TP) {
int i = 0;
/* Delete all default routes */
while ((route_del(ifname, 0, NULL, NULL, NULL) == 0) || (i++ < 10));
/* Set default route to gateway if specified */
route_add(ifname, 0, "0.0.0.0", nvram_safe_get("wan_gateway"), "0.0.0.0");
/* Backup the default gateway. It should be used if L2TP connection is broken */
nvram_set("wan_gateway_buf", nvram_get("wan_gateway"));
/* clear dns from the resolv.conf */
nvram_set("wan_get_dns","");
dns_to_resolv();
start_firewall();
start_l2tp();
}
else {
start_wan_done(ifname);
}
_dprintf("%s: end\n", __FUNCTION__);
return 0;
}
int pppoe_down_main(int argc, char **argv)
{
if (argc < 2) return 0;
TRACE_PT("num=%s\n", argv[1]);
if (atoi(argv[1]) != 0) return 0;
if ((nvram_get_int("ppp_demand")) && (nvram_match("action_service", ""))) {
stop_singe_pppoe(0);
start_pppoe(0);
stop_dnsmasq();
dns_to_resolv();
start_dnsmasq();
}
return 0;
}
// by tallest 0407
int disconnected_pppoe_main(int argc, char **argv)
{
int pppoe_num = atoi(argv[1]);
char ppp_demand[2][20] = { "ppp_demand", "ppp_demand_1" };
if (nvram_match(ppp_demand[pppoe_num], "1")
&& nvram_match("action_service", "")) {
cprintf("tallest:=====( kill pppoe %d )=====\n", pppoe_num);
stop_single_pppoe(pppoe_num);
start_pppoe(pppoe_num);
dns_to_resolv();
stop_dnsmasq();
start_dnsmasq();
return 0;
}
cprintf("tallest:=====( PPPOE Dial On Demand Error!! )=====\n");
return 0;
}
int ipdown_main(int argc, char **argv)
{
int proto;
TRACE_PT("begin\n");
if (!wait_action_idle(10)) return -1;
stop_ddns(); // avoid to trigger DOD
stop_ntpc();
unlink("/tmp/ppp/link");
proto = get_wan_proto();
if (proto == WP_L2TP || proto == WP_PPTP) {
/* clear dns from the resolv.conf */
nvram_set("wan_get_dns","");
dns_to_resolv();
if (proto == WP_L2TP) {
route_del(nvram_safe_get("wan_ifname"), 0, nvram_safe_get("l2tp_server_ip"),
nvram_safe_get("wan_gateway"), "255.255.255.255"); // fixed routing problem in Israel by kanki
}
// Restore the default gateway for WAN interface
nvram_set("wan_gateway_get", nvram_safe_get("wan_gateway"));
// Set default route to gateway if specified
route_del(nvram_safe_get("wan_ifname"), 0, "0.0.0.0", nvram_safe_get("wan_gateway"), "0.0.0.0");
route_add(nvram_safe_get("wan_ifname"), 0, "0.0.0.0", nvram_safe_get("wan_gateway"), "0.0.0.0");
}
if (nvram_get_int("ppp_demand")) {
killall("listen", SIGKILL);
eval("listen", nvram_safe_get("lan_ifname"));
}
TRACE_PT("end\n");
return 1;
}
static int bound(void)
{
nvram_unset("dhcpc_done");
char *wan_ifname = safe_getenv("interface");
char *value;
static char temp_wan_ipaddr[16], temp_wan_netmask[16],
temp_wan_gateway[16];
int changed = 0;
static char *cidr;
if (nvram_match("wan_proto", "iphone"))
stop_process("ipheth-loop", "IPhone Pairing Daemon");
cidr = getenv("cidrroute");
if (cidr && wan_ifname) {
char *callbuffer = malloc(strlen(cidr) + 128);
sprintf(callbuffer,
"export cidrroute=\"%s\";export interface=\"%s\";/etc/cidrroute.sh",
cidr, wan_ifname);
system(callbuffer);
free(callbuffer);
}
if ((value = getenv("ip"))) {
chomp(value);
if (nvram_match("wan_proto", "pptp")
&& nvram_match("pptp_use_dhcp", "1"))
strcpy(temp_wan_ipaddr, value);
else {
if (nvram_invmatch("wan_ipaddr", value))
changed = 1;
}
nvram_set("wan_ipaddr", value);
}
if ((value = getenv("subnet"))) {
chomp(value);
if (nvram_match("wan_proto", "pptp")
&& nvram_match("pptp_use_dhcp", "1"))
strcpy(temp_wan_netmask, value);
else {
if (nvram_invmatch("wan_netmask", value))
changed = 1;
nvram_set("wan_netmask", value);
}
}
if ((value = getenv("router"))) {
chomp(value);
if (nvram_invmatch("wan_gateway", value))
changed = 1;
nvram_set("wan_gateway", value);
}
if ((value = getenv("dns"))) {
chomp(value);
// if (nvram_invmatch("wan_get_dns",value))
// changed=1;
nvram_set("wan_get_dns", value);
}
/*
* Don't care for linksys spec if ((value = getenv("wins")))
* nvram_set("wan_wins", value); if ((value = getenv("hostname")))
* sethostname(value, strlen(value) + 1);
*/
if ((value = getenv("domain"))) {
chomp(value);
if (nvram_invmatch("wan_get_domain", value))
changed = 1;
nvram_set("wan_get_domain", value); // HeartBeat need to use
}
if ((value = getenv("lease"))) {
chomp(value);
nvram_set("wan_lease", value);
expires(atoi(value));
}
if (!changed) {
cprintf("interface hasnt changed, do nothing\n");
return 0;
}
stop_firewall();
cprintf("configure to IF[%s] , IP[%s], MASK[%s]\n", wan_ifname,
nvram_safe_get("wan_ipaddr"), nvram_safe_get("wan_netmask"));
if (nvram_match("wan_proto", "pptp")
&& nvram_match("pptp_use_dhcp", "1"))
eval("ifconfig", wan_ifname, temp_wan_ipaddr, "netmask",
temp_wan_netmask, "up");
else
eval("ifconfig", wan_ifname, nvram_safe_get("wan_ipaddr"),
"netmask", nvram_safe_get("wan_netmask"), "up");
/*
* We only want to exec bellow functions after dhcp get ip if the
* wan_proto is heartbeat
*/
#ifdef HAVE_HEARTBEAT
if (nvram_match("wan_proto", "heartbeat")) {
int i = 0;
/*
* Delete all default routes
*/
while (route_del(wan_ifname, 0, NULL, NULL, NULL) == 0
|| i++ < 10) ;
/*
* Set default route to gateway if specified
*/
route_add(wan_ifname, 0, "0.0.0.0",
nvram_safe_get("wan_gateway"), "0.0.0.0");
/*
* save dns to resolv.conf
*/
dns_to_resolv();
stop_udhcpd();
start_udhcpd();
start_firewall();
stop_wland();
start_wshaper();
start_wland();
start_heartbeat_boot();
}
#else
if (0) {
// nothing
}
#endif
#ifdef HAVE_PPTP
else if (nvram_match("wan_proto", "pptp")
&& nvram_match("pptp_use_dhcp", "1")) {
char pptpip[64];
struct dns_lists *dns_list = NULL;
dns_to_resolv();
dns_list = get_dns_list();
int i = 0;
if (dns_list) {
for (i = 0; i < dns_list->num_servers; i++)
route_add(wan_ifname, 0,
dns_list->dns_server[i],
nvram_safe_get("wan_gateway"),
"255.255.255.255");
free(dns_list);
}
route_add(wan_ifname, 0, "0.0.0.0",
nvram_safe_get("wan_gateway"), "0.0.0.0");
nvram_set("wan_gateway_buf", nvram_get("wan_gateway"));
getIPFromName(nvram_safe_get("pptp_server_name"), pptpip);
nvram_set("pptp_server_ip", pptpip);
// Add the route to the PPTP server on the wan interface for pptp
// client to reach it
if (nvram_match("wan_gateway", "0.0.0.0")
|| nvram_match("wan_netmask", "0.0.0.0"))
route_add(wan_ifname, 0,
nvram_safe_get("pptp_server_ip"),
nvram_safe_get("wan_gateway"),
"255.255.255.255");
else
route_add(wan_ifname, 0,
nvram_safe_get("pptp_server_ip"),
nvram_safe_get("wan_gateway"),
nvram_safe_get("wan_netmask"));
}
#endif
#ifdef HAVE_L2TP
else if (nvram_match("wan_proto", "l2tp")) {
char l2tpip[64];
struct dns_lists *dns_list = NULL;
dns_to_resolv();
dns_list = get_dns_list();
int i = 0;
if (dns_list) {
for (i = 0; i < dns_list->num_servers; i++)
route_add(wan_ifname, 0,
dns_list->dns_server[i],
nvram_safe_get("wan_gateway"),
"255.255.255.255");
free(dns_list);
}
/*
* Backup the default gateway. It should be used if L2TP connection
* is broken
*/
nvram_set("wan_gateway_buf", nvram_get("wan_gateway"));
getIPFromName(nvram_safe_get("l2tp_server_name"), l2tpip);
nvram_set("l2tp_server_ip", l2tpip);
route_add(wan_ifname, 0,
nvram_safe_get("l2tp_server_ip"),
nvram_safe_get("wan_gateway"), "255.255.255.255");
start_firewall();
start_l2tp_boot();
}
#endif
else {
cprintf("start wan done\n");
start_wan_done(wan_ifname);
}
nvram_set("dhcpc_done", "1");
cprintf("done\n");
return 0;
}
void start_pptp(int status)
{
int ret;
FILE *fp;
char *pptp_argv[] = { "pppd",
NULL
};
char username[80], passwd[80];
stop_dhcpc();
#ifdef HAVE_PPPOE
stop_pppoe();
#endif
stop_vpn_modules();
snprintf(username, sizeof(username), "%s",
nvram_safe_get("ppp_username"));
snprintf(passwd, sizeof(passwd), "%s", nvram_safe_get("ppp_passwd"));
if (status != REDIAL) {
create_pptp_config(nvram_safe_get("pptp_server_name"),
username);
/*
* Generate pap-secrets file
*/
if (!(fp = fopen("/tmp/ppp/pap-secrets", "w"))) {
perror("/tmp/ppp/pap-secrets");
return;
}
fprintf(fp, "\"%s\" * \"%s\" *\n", username, passwd);
fclose(fp);
chmod("/tmp/ppp/pap-secrets", 0600);
/*
* Generate chap-secrets file
*/
if (!(fp = fopen("/tmp/ppp/chap-secrets", "w"))) {
perror("/tmp/ppp/chap-secrets");
return;
}
fprintf(fp, "\"%s\" * \"%s\" *\n", username, passwd);
fclose(fp);
chmod("/tmp/ppp/chap-secrets", 0600);
/*
* Enable Forwarding
*/
if ((fp = fopen("/proc/sys/net/ipv4/ip_forward", "r+"))) {
fputc('1', fp);
fclose(fp);
} else
perror("/proc/sys/net/ipv4/ip_forward");
}
char *wan_ifname = nvram_safe_get("wan_ifname");
if (isClient()) {
wan_ifname = getSTA();
}
nvram_set("pptp_ifname", wan_ifname);
/*
* Bring up WAN interface
*/
if (nvram_match("pptp_use_dhcp", "1")) {
// pid_t pid;
// char *wan_ipaddr;
// char *wan_netmask;
// char *wan_gateway;
// char *pptp_server_ip = nvram_safe_get ("pptp_server_ip");
// char *wan_hostname = nvram_safe_get ("wan_hostname");
nvram_set("wan_get_dns", "");
nvram_unset("dhcpc_done");
//dirty hack
start_dhcpc(wan_ifname, NULL, NULL, 1);
int timeout;
for (timeout = 60; !nvram_match("dhcpc_done", "1") && timeout > 0; --timeout) { /* wait for info from dhcp server */
sleep(1);
}
stop_dhcpc(); /* we don't need dhcp client anymore */
create_pptp_config(nvram_safe_get("pptp_server_ip"), username);
} else {
ifconfig(wan_ifname, IFUP, nvram_safe_get("wan_ipaddr"),
nvram_safe_get("wan_netmask"));
struct dns_lists *dns_list = NULL;
dns_to_resolv();
dns_list = get_dns_list();
int i = 0;
if (dns_list) {
for (i = 0; i < dns_list->num_servers; i++)
route_add(wan_ifname, 0,
dns_list->dns_server[i],
nvram_safe_get("pptp_wan_gateway"),
"255.255.255.255");
}
route_add(wan_ifname, 0, "0.0.0.0",
nvram_safe_get("pptp_wan_gateway"), "0.0.0.0");
char pptpip[64];
getIPFromName(nvram_safe_get("pptp_server_name"), pptpip);
route_del(wan_ifname, 0, "0.0.0.0",
nvram_safe_get("pptp_wan_gateway"), "0.0.0.0");
if (dns_list) {
for (i = 0; i < dns_list->num_servers; i++)
route_del(wan_ifname, 0,
dns_list->dns_server[i],
nvram_safe_get("pptp_wan_gateway"),
"255.255.255.255");
free(dns_list);
}
nvram_set("pptp_server_ip", pptpip);
if (!nvram_match("pptp_wan_gateway", "0.0.0.0"))
route_add(wan_ifname, 0,
nvram_safe_get("pptp_server_ip"),
nvram_safe_get("pptp_wan_gateway"),
"255.255.255.255");
}
ret = _evalpid(pptp_argv, NULL, 0, NULL);
if (nvram_match("ppp_demand", "1")) {
/*
* Trigger Connect On Demand if user press Connect button in Status
* page
*/
if (nvram_match("action_service", "start_pptp")
|| nvram_match("action_service", "start_l2tp")) {
start_force_to_dial();
// force_to_dial(nvram_safe_get("action_service"));
nvram_unset("action_service");
}
/*
* Trigger Connect On Demand if user ping pptp server
*/
else {
eval("listen", nvram_safe_get("lan_ifname"));
}
}
stop_wland();
start_wshaper();
start_wland();
cprintf("done\n");
return;
}
void start_dnsmasq(void)
{
FILE *fp;
struct dns_lists *dns_list = NULL;
int ret;
int i;
if (nvram_match("dhcp_dnsmasq", "1")
&& nvram_match("lan_proto", "dhcp")
&& nvram_match("dnsmasq_enable", "0")) {
nvram_set("dnsmasq_enable", "1");
nvram_commit();
}
if (!nvram_invmatch("dnsmasq_enable", "0")) {
stop_dnsmasq();
return;
}
usejffs = 0;
if (nvram_match("dhcpd_usejffs", "1")) {
if (!(fp = fopen("/jffs/dnsmasq.leases", "a"))) {
usejffs = 0;
} else {
fclose(fp);
usejffs = 1;
}
}
/*
* Write configuration file based on current information
*/
if (!(fp = fopen("/tmp/dnsmasq.conf", "w"))) {
perror("/tmp/dnsmasq.conf");
return;
}
// fprintf(fp, "bind-interfaces\n");
if (nvram_match("chilli_enable", "1")) {
if (canlan())
fprintf(fp, "interface=%s", get_wdev());
else
fprintf(fp, "interface=%s,", get_wdev());
} else if (nvram_match("pptpd_enable", "1")) {
if (canlan())
fprintf(fp, "listen-address=%s,%s", "127.0.0.1",
nvram_safe_get("lan_ipaddr"));
else
fprintf(fp, "listen-address=%s", "127.0.0.1");
} else {
if (canlan())
fprintf(fp, "interface=%s",
nvram_safe_get("lan_ifname"));
else
fprintf(fp, "interface=");
}
int mdhcpcount = 0;
if (nvram_get("mdhcpd_count") != NULL) {
mdhcpcount = atoi(nvram_safe_get("mdhcpd_count"));
for (i = 0; i < mdhcpcount; i++) {
if (strlen(nvram_nget("%s_ipaddr", getmdhcp(0, i))) == 0
|| strlen(nvram_nget("%s_netmask", getmdhcp(0, i)))
== 0)
continue;
if (canlan() || i > 0) {
if (nvram_match("pptpd_enable", "1"))
fprintf(fp, ",%s",
nvram_nget("%s_ipaddr",
getmdhcp(0, i)));
else
fprintf(fp, ",%s", getmdhcp(0, i));
} else {
if (nvram_match("pptpd_enable", "1"))
fprintf(fp, "%s",
nvram_nget("%s_ipaddr",
getmdhcp(0, i)));
else
fprintf(fp, "%s", getmdhcp(0, i));
}
}
}
fprintf(fp, "\n");
fprintf(fp, "resolv-file=/tmp/resolv.dnsmasq\n" "all-servers\n"); //
/*
* Domain
*/
if (nvram_match("dhcp_domain", "wan")) {
if (nvram_invmatch("wan_domain", ""))
fprintf(fp, "domain=%s\n",
nvram_safe_get("wan_domain"));
else if (nvram_invmatch("wan_get_domain", ""))
fprintf(fp, "domain=%s\n",
nvram_safe_get("wan_get_domain"));
} else {
if (nvram_invmatch("lan_domain", ""))
fprintf(fp, "domain=%s\n",
nvram_safe_get("lan_domain"));
}
/*
* DD-WRT use dnsmasq as DHCP replacement
*/
//bs mod
if (hasdhcp()) {
/*
* DHCP leasefile
*/
if (nvram_match("dhcpd_usenvram", "1")) {
fprintf(fp, "leasefile-ro\n");
fprintf(fp, "dhcp-script=%s\n", "/etc/lease_update.sh");
} else {
if (usejffs)
fprintf(fp,
"dhcp-leasefile=/jffs/dnsmasq.leases\n");
else
fprintf(fp,
"dhcp-leasefile=/tmp/dnsmasq.leases\n");
}
int dhcp_max = 0;
if (landhcp())
dhcp_max +=
atoi(nvram_safe_get("dhcp_num")) +
atoi(nvram_safe_get("static_leasenum"));
for (i = 0; i < mdhcpcount; i++) {
if (strlen(nvram_nget("%s_ipaddr", getmdhcp(0, i))) == 0
|| strlen(nvram_nget("%s_netmask", getmdhcp(0, i)))
== 0)
continue;
dhcp_max += atoi(getmdhcp(3, i));
}
fprintf(fp, "dhcp-lease-max=%d\n", dhcp_max);
if (landhcp())
fprintf(fp, "dhcp-option=lan,3,%s\n",
nvram_safe_get("lan_ipaddr"));
for (i = 0; i < mdhcpcount; i++) {
if (strlen(nvram_nget("%s_ipaddr", getmdhcp(0, i))) == 0
|| strlen(nvram_nget("%s_netmask", getmdhcp(0, i)))
== 0)
continue;
fprintf(fp, "dhcp-option=%s,3,", getmdhcp(0, i));
fprintf(fp, "%s\n",
nvram_nget("%s_ipaddr", getmdhcp(0, i)));
}
if (nvram_invmatch("wan_wins", "")
&& nvram_invmatch("wan_wins", "0.0.0.0"))
fprintf(fp, "dhcp-option=44,%s\n",
nvram_safe_get("wan_wins"));
if (nvram_match("dns_dnsmasq", "0")) {
dns_list = get_dns_list();
if (dns_list
&& (strlen(dns_list->dns_server[0]) > 0
|| strlen(dns_list->dns_server[1]) > 0
|| strlen(dns_list->dns_server[2]) > 0)) {
fprintf(fp, "dhcp-option=6");
if (strlen(dns_list->dns_server[0]) > 0)
fprintf(fp, ",%s",
dns_list->dns_server[0]);
if (strlen(dns_list->dns_server[1]) > 0)
fprintf(fp, ",%s",
dns_list->dns_server[1]);
if (strlen(dns_list->dns_server[2]) > 0)
fprintf(fp, ",%s",
dns_list->dns_server[2]);
fprintf(fp, "\n");
}
if (dns_list)
free(dns_list);
}
if (nvram_match("auth_dnsmasq", "1"))
fprintf(fp, "dhcp-authoritative\n");
if (landhcp()) {
fprintf(fp, "dhcp-range=lan,");
fprintf(fp, "%d.%d.%d.%s,",
get_single_ip(nvram_safe_get("lan_ipaddr"), 0),
get_single_ip(nvram_safe_get("lan_ipaddr"), 1),
get_single_ip(nvram_safe_get("lan_ipaddr"), 2),
nvram_safe_get("dhcp_start"));
if (nvram_match("dhcp_num", "0")) {
fprintf(fp, "static,");
} else {
fprintf(fp, "%d.%d.%d.%d,",
get_single_ip(nvram_safe_get
("lan_ipaddr"), 0),
get_single_ip(nvram_safe_get
("lan_ipaddr"), 1),
get_single_ip(nvram_safe_get
("lan_ipaddr"), 2),
atoi(nvram_safe_get("dhcp_start")) +
atoi(nvram_safe_get("dhcp_num")) - 1);
}
fprintf(fp, "%s,", nvram_safe_get("lan_netmask"));
fprintf(fp, "%sm\n", nvram_safe_get("dhcp_lease"));
}
for (i = 0; i < mdhcpcount; i++) {
if (strcmp(getmdhcp(1, i), "On"))
continue;
if (strlen(nvram_nget("%s_ipaddr", getmdhcp(0, i))) == 0
|| strlen(nvram_nget("%s_netmask", getmdhcp(0, i)))
== 0)
continue;
fprintf(fp, "dhcp-range=%s,", getmdhcp(0, i));
fprintf(fp, "%d.%d.%d.",
get_single_ip(nvram_nget
("%s_ipaddr", getmdhcp(0, i)),
0),
get_single_ip(nvram_nget
("%s_ipaddr", getmdhcp(0, i)),
1),
get_single_ip(nvram_nget
("%s_ipaddr", getmdhcp(0, i)),
2));
fprintf(fp, "%s,", getmdhcp(2, i));
fprintf(fp, "%d.%d.%d.",
get_single_ip(nvram_nget
("%s_ipaddr", getmdhcp(0, i)),
0),
get_single_ip(nvram_nget
("%s_ipaddr", getmdhcp(0, i)),
1),
get_single_ip(nvram_nget
("%s_ipaddr", getmdhcp(0, i)),
2));
int end = atoi(getmdhcp(2, i));
end += atoi(getmdhcp(3, i));
fprintf(fp, "%d,", end);
fprintf(fp, "%s,",
nvram_nget("%s_netmask", getmdhcp(0, i)));
fprintf(fp, "%sm\n", getmdhcp(4, i));
}
int leasenum = atoi(nvram_safe_get("static_leasenum"));
if (leasenum > 0) {
char *lease = nvram_safe_get("static_leases");
char *leasebuf = (char *)malloc(strlen(lease) + 1);
char *cp = leasebuf;
strcpy(leasebuf, lease);
for (i = 0; i < leasenum; i++) {
char *mac = strsep(&leasebuf, "=");
char *host = strsep(&leasebuf, "=");
char *ip = strsep(&leasebuf, "=");
char *time = strsep(&leasebuf, " ");
if (mac == NULL || host == NULL || ip == NULL)
continue;
if (!time || strlen(time) == 0)
fprintf(fp,
"dhcp-host=%s,%s,%s,infinite\n",
mac, host, ip);
else
fprintf(fp, "dhcp-host=%s,%s,%s,%sm\n",
mac, host, ip, time);
addHost(host, ip);
}
free(cp);
}
}
/* stop dns rebinding for private addresses */
if (nvram_match("dnsmasq_no_dns_rebind", "1")) {
fprintf(fp, "stop-dns-rebind\n");
}
/*
* Additional options
*/
if (nvram_invmatch("dnsmasq_options", "")) {
fwritenvram("dnsmasq_options", fp);
}
fclose(fp);
dns_to_resolv();
chmod("/etc/lease_update.sh", 0700);
ret = eval("dnsmasq", "--conf-file=/tmp/dnsmasq.conf");
dd_syslog(LOG_INFO, "dnsmasq : dnsmasq daemon successfully started\n");
cprintf("done\n");
return;
}
/*
* Called when link goes down
*/
int ipdown_main(int argc, char **argv)
{
if (check_action() != ACT_IDLE)
return -1;
runStartup("/etc/config", ".ipdown");
#ifdef HAVE_REGISTER
if (isregistered_real())
#endif
{
#ifdef HAVE_RB500
runStartup("/usr/local/etc/config", ".ipdown");
#else
runStartup("/jffs/etc/config", ".ipdown");
runStartup("/mmc/etc/config", ".ipdown");
runStartup("/tmp/etc/config", ".ipdown");
#endif
}
stop_ddns();
stop_ntpc();
unlink("/tmp/ppp/link");
if (nvram_match("wan_proto", "l2tp")) {
/*
* clear dns from the resolv.conf
*/
nvram_set("wan_get_dns", "");
dns_to_resolv();
// todo
route_del(nvram_safe_get("wan_ifname"), 0, nvram_safe_get("l2tp_server_ip"), nvram_safe_get("wan_gateway_buf"), "255.255.255.255");
/*
* Restore the default gateway for WAN interface
*/
nvram_set("wan_gateway", nvram_safe_get("wan_gateway_buf"));
/*
* Set default route to gateway if specified
*/
route_add(nvram_safe_get("wan_ifname"), 0, "0.0.0.0", nvram_safe_get("wan_gateway"), "0.0.0.0");
}
if (nvram_match("wan_proto", "pptp")) {
eval("route", "del", "default");
nvram_set("wan_gateway", nvram_safe_get("wan_gateway_buf"));
eval("route", "add", "default", "gw", nvram_safe_get("wan_gateway"));
sysprintf("iptables -t nat -A POSTROUTING -o %s -j MASQUERADE\n", nvram_safe_get("pptp_ifname"));
}
#ifdef HAVE_3G
#if defined(HAVE_TMK) || defined(HAVE_BKM)
else if (nvram_match("wan_proto", "3g")) {
char *gpio3g = nvram_get("gpio3g");
if (gpio3g != NULL)
set_gpio(atoi(gpio3g), 0);
}
#endif
#endif
nvram_set("pppoe_ifname", "");
nvram_set("pppd_pppifname", "");
// write PPP traffic statistics to nvram if wanted
if (nvram_match("ppp_traffic", "1")) {
char buffer[64];
long long old_in, old_out;
long long in, out;
char *pin;
char *pout;
time_t stamp;
old_in = atol(nvram_safe_get("ppp_byte_in"));
old_out = atol(nvram_safe_get("ppp_byte_out"));
if ((pin = getenv("BYTES_RCVD")))
in = atol(pin);
else
in = 0;
if ((pout = getenv("BYTES_SENT")))
out = atol(pout);
else
out = 0;
in += old_in;
out += old_out;
snprintf(buffer, 63, "%lld", in);
nvram_set("ppp_byte_in", buffer);
snprintf(buffer, 63, "%lld", out);
nvram_set("ppp_byte_out", buffer);
if ((stamp = time(NULL)) < 1087818160) // clock is not set
// properly
stamp = 0;
snprintf(buffer, 63, "%ld", stamp);
nvram_set("ppp_byte_stamp", buffer);
nvram_commit();
}
if (nvram_match("ppp_demand", "1")
&& (nvram_match("wan_proto", "pptp")
|| nvram_match("wan_proto", "l2tp")
|| nvram_match("wan_proto", "pppoe"))) {
stop_process("listen", "activity listener");
eval("listen", nvram_safe_get("lan_ifname"));
}
return 1;
}
