| 1 | #!/bin/sh |
| 2 | |
| 3 | if [ "$ACTION" = ifup ]; then |
| 4 | . /etc/functions.sh |
| 5 | |
| 6 | include /lib/network |
| 7 | scan_interfaces |
| 8 | |
| 9 | update_tunnel() { |
| 10 | local cfg="$1" |
| 11 | |
| 12 | local proto |
| 13 | config_get proto "$cfg" proto |
| 14 | [ "$proto" = 6in4 ] || return 0 |
| 15 | |
| 16 | local wandev |
| 17 | config_get wandev "$cfg" wan_device "$(find_6in4_wanif)" |
| 18 | [ "$wandev" = "$DEVICE" ] || return 0 |
| 19 | |
| 20 | local wanip=$(find_6in4_wanip "$wandev") |
| 21 | |
| 22 | [ -n "$wanip" ] && { |
| 23 | lsmod | grep -q ^sit || { |
| 24 | logger -t 6in4-update "Tunneling driver not loaded yet, deferring action" |
| 25 | exit 0 |
| 26 | } |
| 27 | |
| 28 | local tunnelid |
| 29 | config_get tunnelid "$cfg" tunnelid |
| 30 | |
| 31 | local username |
| 32 | config_get username "$cfg" username |
| 33 | |
| 34 | local password |
| 35 | config_get password "$cfg" password |
| 36 | |
| 37 | uci_set_state network "$cfg" ipaddr "$wanip" |
| 38 | |
| 39 | [ -n "$tunnelid" ] && [ -n "$username" ] && [ -n "$password" ] && { |
| 40 | [ "${#password}" == 32 -a -z "${password//[a-fA-F0-9]/}" ] || { |
| 41 | password="$(echo -n "$password" | md5sum)"; password="${password%% *}" |
| 42 | } |
| 43 | |
| 44 | ( |
| 45 | local url="http://ipv4.tunnelbroker.net/ipv4_end.php?ip=AUTO&apikey=$username&pass=$password&tid=$tunnelid" |
| 46 | local try=0 |
| 47 | local max=3 |
| 48 | |
| 49 | while [ $((++try)) -le $max ]; do |
| 50 | wget -qO/dev/null "$url" 2>/dev/null && { |
| 51 | logger -t 6in4-update "Updated tunnel #$tunnelid endpoint to $wanip" |
| 52 | ifup "$cfg" |
| 53 | break |
| 54 | } || { |
| 55 | logger -t 6in4-update "Try $try/$max failed, retrying" |
| 56 | sleep 1 |
| 57 | } |
| 58 | done |
| 59 | )& |
| 60 | } || { |
| 61 | logger -t 6in4-update "Re-establishing tunnel due to change on $INTERFACE ($DEVICE)" |
| 62 | ifup "$cfg" & |
| 63 | } |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | config_foreach update_tunnel interface |
| 68 | fi |
| 69 | |
