net/vpnbypass/files/vpnbypass.init

   1 #!/bin/sh /etc/rc.common
   2 PKG_VERSION=
   3
   4 export START=94
   5 export 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 export verbosity=2 TID='200' IPSET='vpnbypass' FW_MARK='0x010000' FW_MASK='0xff0000' wan_if4 wan_gw
  13
  14 output() { [[ $# -ne 1 ]] && { [[ ! $((verbosity & $1)) -gt 0 ]] && return 0 || shift; }; local msg; msg=$(echo -n "${1/$p_name /service }" | sed 's|\\033\[[0-9]\?;\?[0-9]\?[0-9]\?m||g'); [[ -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}; }
  15 PKG_NAME="${PKG_NAME:-vpnbypass}"; p_name="${PKG_NAME} ${PKG_VERSION}"
  16
  17 is_enabled() {
  18         local c=1 enabled
  19         config_load $PKG_NAME
  20         config_get_bool enabled 'config' 'enabled' 1
  21         config_get verbosity    'config' 'verbosity' '2'
  22         config_get TID          'config' 'table_number' '200'
  23         config_get IPSET        'config' 'ipset'   'vpnbypass'
  24         config_get FW_MARK      'config' 'fw_mark' '0x010000'
  25         config_get FW_MASK      'config' 'fw_mask' '0xff0000'
  26         source /lib/functions/network.sh
  27         [[ $enabled -gt 0 ]] || { output "$__error__: $p_name is not enabled.\n"; return 1; }
  28         source  /lib/functions/network.sh
  29         while : ; do
  30                 network_find_wan wan_if4
  31                 [ -n "$wan_if4" ] && network_get_gateway wan_gw $wan_if4
  32                 [[ $c -ge 25 || -n "$wan_gw" ]] && break
  33                 output "$p_name waiting for wan gateway...\n"
  34                 sleep 2; network_flush_cache; let "c+=1";
  35         done
  36         [ -n "$wan_gw" ] && return 0 || { output "$__error__: $p_name failed to discover WAN gateway.\n"; return 1; }
  37 }
  38
  39 ipt() {
  40     local d; d=$(echo "$*" | sed s/-A/-D/g);
  41     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  42     d=$(echo "$*" | sed s/-I/-D/g)
  43     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  44                 d=$(echo "$*" | sed s/-N/-F/g)
  45     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  46                 d=$(echo "$*" | sed s/-N/-X/g)
  47     [ "$d" != "$*" ] && iptables $d >/dev/null 2>&1
  48                 d="$*"
  49                 iptables $d >/dev/null 2>&1 || output "\n$__error__: iptables $d\n"
  50 }
  51
  52 start_service() {
  53         local ll lports rports routes ranges
  54   is_enabled || return 1
  55   config_get lports   'config' 'localport'
  56   config_get rports   'config' 'remoteport'
  57   config_get routes   'config' 'remotesubnet'
  58   config_get ranges   'config' 'localsubnet'
  59
  60         procd_open_instance
  61         procd_set_param stdout 1
  62         procd_set_param stderr 1
  63         procd_close_instance
  64
  65         iptables -t mangle -D PREROUTING -m mark --mark 0x00/${FW_MASK} -g VPNBYPASS >/dev/null 2>&1
  66         ipt -t mangle -N VPNBYPASS; ipt -t mangle -A PREROUTING -m mark --mark 0x00/${FW_MASK} -g VPNBYPASS;
  67         ipt -t mangle -A VPNBYPASS -m set --match-set $IPSET dst -j MARK --set-mark ${FW_MARK}/${FW_MASK}
  68         ip rule del fwmark "$FW_MARK" table "$TID" >/dev/null 2>&1; ipset -q flush "$IPSET"; ipset -q destroy "$IPSET";
  69         ip route flush table "$TID"; ip route flush cache;
  70         ip route add default via "$wan_gw" table "$TID"; ip route flush cache;
  71         ipset -q -exist create "$IPSET" hash:ip; ipset -q flush "$IPSET"
  72         ip rule add fwmark "$FW_MARK" table "$TID"
  73         { modprobe xt_set; modprobe ip_set; modprobe ip_set_hash_ip; } >/dev/null 2>&1
  74         for ll in ${ranges}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -s "$ll"; done
  75         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
  76         for ll in ${routes}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -d "$ll"; done
  77         for ll in ${rports}; do ipt -t mangle -I VPNBYPASS 1 -j MARK --set-mark ${FW_MARK}/${FW_MASK} -p tcp -m multiport --dport "${ll//-/:}"; done
  78         output "$p_name started with TID: $TID; FW_MARK: $FW_MARK\n"
  79 }
  80
  81 stop_service() {
  82   is_enabled || return 1
  83
  84         ip rule del fwmark "$FW_MARK" table "$TID" >/dev/null 2>&1; ipset -q flush "$IPSET"; ipset -q destroy "$IPSET";
  85         ip route flush table "$TID"; ip route flush cache;
  86         iptables -t mangle -D PREROUTING -m mark --mark 0x00/${FW_MASK} -g VPNBYPASS >/dev/null 2>&1
  87         iptables -t mangle -F VPNBYPASS >/dev/null 2>&1; iptables -t mangle -X VPNBYPASS >/dev/null 2>&1;
  88         output "$p_name stopped\n"
  89 }
  90
  91 reload_service(){
  92         start_service
  93 }
  94
  95 st_load_interfaces(){ local d; config_get d $1 ifname; [[ "$1" == "$wan_if4" || "$d" != "${d/tun}" || "$d" != "${d/tap}" ]] && ifaces=" ${1} ${ifaces}"; }
  96 service_triggers() {
  97                 local ifaces n
  98                 procd_add_reload_trigger 'vpnbypass'
  99                 procd_open_trigger
 100                 procd_add_config_trigger "config.change" "vpnbypass" /etc/init.d/vpnbypass reload
 101                 for n in $ifaces; do procd_add_interface_trigger "interface.*" "$n" /etc/init.d/openvpn-policy-routing reload; done;
 102                 procd_close_trigger
 103 }