#!/bin/sh## Could be better, but it's working as expected## ## chkconfig: 345 65 35## description: Startup/shutdown script for Wifidog captive portal# processname: wifidog# Date    : 2004-08-25# Version : 1.0IPT=/usr/sbin/iptablesWD_DIR=/usr/binOPTIONS=""case "$1" in  start)    echo "Starting Wifidog ... "    if $WD_DIR/wdctl status 2> /dev/null    then	echo "FAILED:  Wifidog already running"    else        $0 test-module	if $WD_DIR/wifidog $OPTIONS	then		echo "OK"	else		echo "FAILED:  Wifidog exited with non 0 status"	fi    fi    ;;  restart)    $0 stop    sleep 2    $0 start    ;;  reload)    $0 stop    sleep 2    $0 start    ;;  stop)    echo "Stopping Wifidog ... "    if $WD_DIR/wdctl status 2> /dev/null    then       	if $WD_DIR/wdctl stop	then		echo "OK"	else		echo "FAILED:  wdctl stop exited with non 0 status"	fi           else       echo "FAILED:  Wifidog was not running"    fi    ;;  status)    $WD_DIR/wdctl status    ;;  debug|test-module)    ### Test ipt_mark with iptables    test_ipt_mark () {      IPTABLES_OK=$($IPT -A FORWARD -m mark --mark 2 -j ACCEPT 2>&1 | grep "No chain.target.match")      if [ -z "$IPTABLES_OK" ]; then        $IPT -D FORWARD -m mark --mark 2 -j ACCEPT 2>&1        echo 1      else        echo 0      fi    }    ### Test ipt_mac with iptables    test_ipt_mac () {      IPTABLES_OK=$($IPT -A INPUT -m mac --mac-source 00:00:00:00:00:00 -j ACCEPT 2>&1 | grep "No chain.target.match")      if [ -z "$IPTABLES_OK" ]; then        $IPT -D INPUT -m mac --mac-source 00:00:00:00:00:00 -j ACCEPT 2>&1        echo 1      else        echo 0      fi    }    ### Test ipt_REDIRECT with iptables    test_ipt_REDIRECT () {      IPTABLES_OK=$($IPT -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 2060 2>&1 | grep "No chain.target.match")      if [ -z "$IPTABLES_OK" ]; then        $IPT -t nat -D PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 2060 2>&1        echo 1      else        echo 0      fi    }    ### Find a module on disk    module_exists () {    echo " Looking for a module on disk"      EXIST=$(find /lib/modules/`uname -r` -name $1.*o 2>/dev/null)      if [ -n "$EXIST" ]; then        echo 1      else        echo 0      fi    }    ### Test if a module is in memory    module_in_memory () {      MODULE=$(lsmod | grep $1 | awk '{print $1}')      if [ "$MODULE" = "$1" ]; then        echo 1      else        echo 0      fi    }    echo "Testing for iptables modules"    echo "  Testing ipt_mac"    TEST_IPT_MAC=$(test_ipt_mac)    if [ "$TEST_IPT_MAC" = "0" ]; then      echo "   iptables is not working with ipt_mac"      echo "   Scanning disk for ipt_mac module"      TEST_IPT_MAC_MODULE_EXISTS=$(module_exists "ipt_mac")      if [ "$TEST_IPT_MAC_MODULE_EXISTS" = "0" ]; then        echo "   ipt_mac module is missing, please install it (kernel or module)"        exit      else        echo "   ipt_mac module exists, trying to load"        insmod ipt_mac > /dev/null        TEST_IPT_MAC_MODULE_MEMORY=$(module_in_memory "ipt_mac")        if [ "$TEST_IPT_MAC_MODULE_MEMORY" = "0" ]; then          echo "  Error: ipt_mac not loaded"          exit        else          echo "  ipt_mac loaded sucessfully"        fi      fi    else      echo "   ipt_mac  module is working"    fi    echo "  Testing ipt_mark"    TEST_IPT_MARK=$(test_ipt_mark)    if [ "$TEST_IPT_MARK" = "0" ]; then      echo "   iptables is not working with ipt_mark"      echo "   Scanning disk for ipt_mark module"      TEST_IPT_MARK_MODULE_EXISTS=$(module_exists "ipt_mark")      if [ "$TEST_IPT_MARK_MODULE_EXISTS" = "0" ]; then        echo "   iptables ipt_mark module missing, please install it (kernel or module)"        exit      else        echo "   ipt_mark module exists, trying to load"        insmod ipt_mark        TEST_IPT_MARK_MODULE_MEMORY=$(module_in_memory "ipt_mark")        if [ "$TEST_IPT_MARK_MODULE_MEMORY" = "0" ]; then          echo "   Error: ipt_mark not loaded"          exit        else          echo "   ipt_mark loaded sucessfully"        fi      fi      else    echo "   ipt_mark module is working"    fi    echo "  Testing ipt_REDIRECT"    TEST_IPT_MAC=$(test_ipt_REDIRECT)    if [ "$TEST_IPT_MAC" = "0" ]; then      echo "   iptables is not working with ipt_REDIRECT"      echo "   Scanning disk for ipt_REDIRECT module"      TEST_IPT_MAC_MODULE_EXISTS=$(module_exists "ipt_REDIRECT")      if [ "$TEST_IPT_MAC_MODULE_EXISTS" = "0" ]; then        echo "   ipt_REDIRECT module is missing, please install it (kernel or module)"        exit      else        echo "   ipt_REDIRECT module exists, trying to load"        insmod ipt_REDIRECT > /dev/null        TEST_IPT_MAC_MODULE_MEMORY=$(module_in_memory "ipt_REDIRECT")        if [ "$TEST_IPT_MAC_MODULE_MEMORY" = "0" ]; then          echo "  Error: ipt_REDIRECT not loaded"          exit        else          echo "  ipt_REDIRECT loaded sucessfully"        fi      fi    else      echo "   ipt_REDIRECT  module is working"    fi    ;;  *)   echo "Usage: $0 {start|stop|restart|reload|status|test-module}"   exit 1   ;;esac