net/vpnbypass/files/vpnbypass.init

   1 #!/bin/sh /etc/rc.common
   2 PKG_VERSION=
   3
   4 START=94
   5 USE_PROCD=1
   6
   7 readonly __ok__='\033[0;32m[\xe2\x9c\x93]\033[0m'
   8 readonly __fail__='\033[0;31m[\xe2\x9c\x97]\033[0m'
   9 readonly __pass__='\033[0;33m[-]\033[0m'
  10 readonly __error__='\033[0;31mERROR\033[0m'
  11
  12 output() { local msg=$(echo -n "${1/$p_name /service }" | sed 's|\\033\[[0-9]\?;\?[0-9]\?[0-9]\?m||g'); [ -n "$2" ] && [ ! $(($verbosity & $2)) -gt 0 ] && return 0; [ -t 1 ] && echo -e -n "$1"; [ $(echo -e -n "$msg" | wc -l) -gt 0 ] && logger -t "${PKG_NAME:-service} [$$]" "$(echo -e -n ${logmsg}${msg})" && logmsg='' || logmsg=${logmsg}${msg}; }
  13 PKG_NAME="${PKG_NAME:-vpnbypass}"; p_name="${PKG_NAME} ${PKG_VERSION}"
  14
  15 is_enabled() {
  16         config_load $PKG_NAME
  17         config_get verbosity    'config' 'verbosity' '2'
  18         config_get TID          'config' 'table_number' '200'
  19         config_get IPSET        'config' 'ipset'  'vpnbypass'
  20         config_get FW_MARK      'config' 'fw_mark' '0x010000'
  21         config_get FW_MASK      'config' 'fw_mask' '0xff0000'
  22         source /lib/functions/network.sh
  23         return 0
  24 }
  25
  26 ipt() {
  27     local d=$(echo $* | sed s/-A/-D/g)
  28     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  29     d=$(echo $* | sed s/-I/-D/g)
  30     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  31                 d=$(echo $* | sed s/-N/-F/g)
  32     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  33                 d=$(echo $* | sed s/-N/-X/g)
  34     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  35
  36                 iptables $* >/dev/null 2>&1
  37 }
  38
  39 #boot() { ubus -t 30 wait_for network.interface.wan && { rc_procd start_service; rc_procd service_triggers; } || output "ERROR: $p_name failed to settle network interface!\n"; }
  40
  41 start_service() {
  42         local ll c=1
  43   config_load vpnbypass
  44   is_enabled || return 1
  45   config_get lports   'config' 'localport'
  46   config_get rports   'config' 'remoteport'
  47   config_get routes   'config' 'remotesubnet'
  48   config_get ranges   'config' 'localsubnet'
  49   config_get domains  'config' 'domain'
  50
  51         procd_open_instance
  52         procd_set_param stdout 1
  53         procd_set_param stderr 1
  54         procd_close_instance
  55
  56         while : ; do
  57                 network_find_wan wan_if4; [ -n "wan_if4" ] && network_get_gateway wan_gw $wan_if4;
  58                 [ $c -ge 25 -o -n "$wan_gw" ] && break
  59                 output "$p_name waiting for wan gateway...\n"; sleep 2; network_flush_cache; let "c+=1";
  60         done
  61         [ -z "$wan_gw" ] && output "$__error__: $p_name could not discover wan gateway IP!\n" && exit 1
  62
  63         ipt -t mangle -N VPNBYPASS; ipt -t mangle -A PREROUTING -m mark --mark 0x00/${FW_MASK} -g VPNBYPASS;
  64         ipt -t mangle -A VPNBYPASS -m set --match-set $IPSET dst -j MARK --set-mark ${FW_MARK}/${FW_MASK}
  65         ip rule del fwmark "$FW_MARK" table "$TID" >/dev/null 2>&1; ipset -q flush "$IPSET"; ipset -q destroy "$IPSET";
  66         ip route flush table "$TID"; ip route flush cache;
  67         ip route add default via "$wan_gw" table "$TID"; ip route flush cache;
  68         ipset -q -exist create "$IPSET" hash:ip; ipset -q flush "$IPSET"
  69         ip rule add fwmark "$FW_MARK" table "$TID"
  70         { modprobe xt_set; modprobe ip_set; modprobe ip_set_hash_ip; } >/dev/null 2>&1
  71         for ll in ${ranges}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -s "$ll"; done
  72         for ll in ${lports}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -p tcp -m multiport --sport "${ll//-/:}"; done
  73         for ll in ${routes}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -d "$ll"; done
  74         for ll in ${rports}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -p tcp -m multiport --dport "${ll//-/:}"; done
  75         output "$p_name started with TID: $TID; FW_MARK: $FW_MARK\n"
  76 }
  77
  78 stop_service() {
  79         local ll
  80   is_enabled || return 1
  81
  82         ip rule del fwmark "$FW_MARK" table "$TID" >/dev/null 2>&1; ipset -q flush "$IPSET"; ipset -q destroy "$IPSET";
  83         ip route flush table "$TID"; ip route flush cache;
  84         ipt -t mangle -D PREROUTING -m mark --mark 0x00/${FW_MASK} -g VPNBYPASS
  85         ipt -t mangle -F VPNBYPASS; ipt -t mangle -X VPNBYPASS;
  86         output "$p_name stopped\n"
  87 }
  88
  89 reload_service(){
  90         start_service
  91 }
  92
  93 st_load_interfaces(){ local d; config_get d $1 ifname; [ "$1" == "$wan_if4" -o "$d" != "${d/tun}" -o "$d" != "${d/tap}" ] && ifaces=" ${1} ${ifaces}"; }
  94 service_triggers() {
  95                 local ifaces n
  96                 procd_add_reload_trigger 'vpnbypass'
  97                 procd_open_trigger
  98                 procd_add_config_trigger "config.change" "vpnbypass" /etc/init.d/vpnbypass reload
  99                 for n in $ifaces; do procd_add_interface_trigger "interface.*" "$n" /etc/init.d/openvpn-policy-routing reload; done;
 100                 procd_close_trigger
 101 }