static int
bound(void) // udhcpc bound here, also call wanup
{
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("ip")))
nvram_set(strcat_r(prefix, "ipaddr", tmp), trim_r(value));
if ((value = getenv("subnet")))
nvram_set(strcat_r(prefix, "netmask", tmp), trim_r(value));
if ((value = getenv("router")))
nvram_set(strcat_r(prefix, "gateway", tmp), trim_r(value));
if ((value = getenv("dns")))
nvram_set(strcat_r(prefix, "dns", tmp), trim_r(value));
if ((value = getenv("wins")))
nvram_set(strcat_r(prefix, "wins", tmp), trim_r(value));
nvram_set(strcat_r(prefix, "routes", tmp), getenv("routes"));
nvram_set(strcat_r(prefix, "msroutes", tmp), getenv("msroutes"));
#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));
}
ifconfig(wan_ifname, IFUP,
nvram_safe_get(strcat_r(prefix, "ipaddr", tmp)),
nvram_safe_get(strcat_r(prefix, "netmask", tmp)));
spinlock_lock(SPINLOCK_DHCPRenew);
nvram_set("dhcp_renew", "0"); // for detectWAN
spinlock_unlock(SPINLOCK_DHCPRenew);
wan_up(wan_ifname);
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);
wanmessage("");
dprintf("done\n");
return 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;
}
/*
* Called when link comes up
*/
int
ipup_main(int argc, char **argv)
{
FILE *fp;
char *wan_ifname;
char *value;
char buf[256];
char tmp[100], prefix[WAN_PREFIX_SZ];
if (ppp_prefix(&wan_ifname, prefix) < 0)
return -1;
umask(022);
/* Touch connection file */
if (!(fp = fopen(strcat_r("/tmp/ppp/link.", wan_ifname, tmp), "a"))) {
perror(tmp);
return errno;
}
fclose(fp);
if ((value = getenv("IPLOCAL"))) {
if (nvram_invmatch(strcat_r(prefix, "ipaddr", tmp), value))
ifconfig(wan_ifname, IFUP, "0.0.0.0", NULL);
_ifconfig(wan_ifname, IFUP,
value, "255.255.255.255", getenv("IPREMOTE"));
nvram_set(strcat_r(prefix, "ipaddr", tmp), value);
nvram_set(strcat_r(prefix, "netmask", tmp), "255.255.255.255");
}
if ((value = getenv("IPREMOTE")))
nvram_set(strcat_r(prefix, "gateway", tmp), value);
strcpy(buf, "");
if (getenv("DNS1"))
sprintf(buf, "%s", getenv("DNS1"));
if (getenv("DNS2"))
sprintf(buf + strlen(buf), "%s%s", strlen(buf) ? " " : "", getenv("DNS2"));
nvram_set(strcat_r(prefix, "dns", tmp), buf);
wan_up(wan_ifname);
logmessage(nvram_safe_get("wan_proto_t"), "connected to ISP");
wanmessage("");
dprintf("done\n");
return 0;
}
/*
* deconfig: This argument is used when udhcpc starts, and when a
* leases is lost. The script should put the interface in an up, but
* deconfigured state.
*/
static int
deconfig(void)
{
char *wan_ifname = safe_getenv("interface");
if (nvram_match("wan0_proto", "l2tp") || nvram_match("wan0_proto", "pptp"))
{
/* fix hang-up issue */
logmessage("dhcp client", "skipping resetting IP address to 0.0.0.0");
} else
ifconfig(wan_ifname, IFUP, "0.0.0.0", NULL);
expires(wan_ifname, 0);
wan_down(wan_ifname);
logmessage("dhcp client", "%s: lease is lost", udhcpstate);
wanmessage("lost IP from server");
return 0;
}
/*
* Called when link goes down
*/
int
ipdown_main(int argc, char **argv)
{
char *wan_ifname;
char tmp[100], prefix[WAN_PREFIX_SZ];
if (ppp_prefix(&wan_ifname, prefix) < 0)
return -1;
umask(022);
wan_down(wan_ifname);
unlink(strcat_r("/tmp/ppp/link.", wan_ifname, tmp));
preset_wan_routes(wan_ifname);
logmessage(nvram_safe_get("wan_proto_t"), "Disconnected");
wanmessage(pppstatus(tmp));
return 0;
}
