static int ppp_prefix(char **wan_ifname, char *prefix)
{
char tmp[100];
int unit;
*wan_ifname = safe_getenv("IFNAME");
if ((unit = ppp_ifunit(*wan_ifname)) < 0)
return -1;
sprintf(prefix, "wan%d_", unit);
if (!nvram_get(strcat_r(prefix, "ifname", tmp)))
return -2;
return unit;
}
/*
* Called when link comes up
*/
int
ipup_main(int argc, char **argv)
{
FILE *fp;
char *wan_ifname = safe_getenv("IFNAME");
char *value;
char buf[256];
int unit;
char tmp[100], prefix[] = "wanXXXXXXXXXX_";
dprintf("%s\n", argv[0]);
if ((unit = ppp_ifunit(wan_ifname)) < 0)
return -1;
snprintf(prefix, sizeof(prefix), "wan%d_", unit);
/* 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"))) {
ifconfig(wan_ifname, IFUP,
value, "255.255.255.255");
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);
dprintf("done\n");
return 0;
}
/*
* Called when link goes down
*/
int
ipdown_main(int argc, char **argv)
{
char *wan_ifname = safe_getenv("IFNAME");
int unit;
char tmp[100], prefix[] = "wanXXXXXXXXXX_";
if ((unit = ppp_ifunit(wan_ifname)) < 0)
return -1;
snprintf(prefix, sizeof(prefix), "wan%d_", unit);
wan_down(wan_ifname);
unlink(strcat_r("/tmp/ppp/link.", wan_ifname, tmp));
preset_wan_routes(wan_ifname);
return 0;
}
