325 lines
13 KiB
Bash
Executable File
325 lines
13 KiB
Bash
Executable File
#!/usr/bin/env bash
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## --------------------------
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## --- Make your changes here
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## --------------------------
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LOGGING_CONSOLE=false
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DEBUG=false
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log_file=/var/log/check_dsl.log
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## - Put in your DSL devices (refers to your network configuration)
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## - youe wish be congigured by that script
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## -
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DSL_DEVICES="ppp-surf2 ppp-surf1 ppp-st"
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admin_email=root
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from_address="check-dsl@`hostname -f`"
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company="Gemeinschaft Altenschlirf"
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content_type='Content-Type: text/plain;\n charset="utf-8"'
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##########################################
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## --- Dont't make changes after this line
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##########################################
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## ------------------
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## --- Some functions
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## ------------------
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## - Check if a given array (parameter 2) contains a given string (parameter 1)
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## -
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containsElement () {
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local e
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for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
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return 1
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}
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## -------------------------------------------------
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## --- If script is already running, stop execution
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## -------------------------------------------------
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LOCK_DIR=/tmp/`basename $0`.LOCK
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if mkdir "$LOCK_DIR" 2> /dev/null ; then
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## - Remove lockdir when the script finishes, or when it receives a signal
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trap 'rm -rf "$LOCK_DIR"' 0 2 15
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else
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datum=`date +"%d.%m.%Y"`
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msg="[ Error ]: A previos instance of script \"`basename $0`\" seems already be running.\n\n Exiting now.."
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echo -e "To:${admin_email}\n${content_type}\nSubject:DSL Script Error $company -- $datum\n\n${msg}\n" | /usr/sbin/sendmail -F "DSL Monitoring $company" -f $from_address $admin_email
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if $LOGGING_CONSOLE ; then
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echo ""
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echo "[ Error ]: A previos instance script \"`basename $0`\" seems already be running."
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echo ""
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echo " Exiting now.."
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echo ""
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fi
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exit 1
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fi
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## - Define (non associative) array
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## -
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declare -a dsl_devices_arr
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for _dsl_device in $DSL_DEVICES ; do
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dsl_devices_arr+=("$_dsl_device")
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done
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declare -a online_devices_arr
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for _online_device in "$@" ; do
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online_devices_arr+=("$_online_device")
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done
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## - Define associative array
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## -
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declare -A remote_gw_arr
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declare -A filetime_PID_arr
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for dsl_device in "${online_devices_arr[@]}" ; do
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remote_gw_address=`ifconfig $dsl_device 2> /dev/null | grep "inet Adresse" | cut -d":" -f3 | cut -d" " -f1`
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remote_gw_arr[$dsl_device]=$remote_gw_address
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_pid_file=/var/run/${dsl_device}.pid
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if [ -f $_pid_file ]; then
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filetime_PID_arr[$dsl_device]=`stat -c %Y /var/run/${dsl_device}.pid`
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else
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filetime_PID_arr[$dsl_device]="NOT FOUND"
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fi
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done
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ping_test_hosts="oopen.de google.com heise.de debian.org ubuntu.com"
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declare -a ping_ip_arr;
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#for _key in "${!filetime_PID_arr[@]}" ; do
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# echo "filetime_PID_arr[$_key]: ${filetime_PID_arr[$_key]}"
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#done
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#for _key in "${!remote_gw_arr[@]}" ; do
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# echo "remote_gw_arr[$_key]: ${remote_gw_arr[$_key]}"
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#done
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#for _device in ${online_devices_arr[@]} ; do
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# echo "$_device"
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#done
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## ---" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## --- Starting script `basename $0`" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## --- Devices Online...: ${online_devices_arr[@]}" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## --- Remote Gateways..: ${remote_gw_arr[@]}" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] ## ---" >> $log_file
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while true ; do
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changed=false
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for dsl_device in "${dsl_devices_arr[@]}" ; do
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if $DEBUG ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] ## --- Device $dsl_device " >> $log_file
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fi
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remote_gw_address=`ifconfig $dsl_device 2> /dev/null | grep "inet Adresse" | cut -d":" -f3 | cut -d" " -f1`
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iface_name="dsl-`echo $dsl_device | cut -d '-' -f2`"
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rt_name="dsl_`echo $dsl_device | cut -d '-' -f2`"
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if [ -z "$remote_gw_address" ]; then
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if containsElement "$dsl_device" ${online_devices_arr[@]} ; then
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## - <before> <now>
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## -
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## - online offline
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Status Devices \"$dsl_device\" changed" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Devices \"$dsl_device\" is now OFFLINE" >> $log_file
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if ps -x | grep -E "/usr/sbin/pppd\s+call\s+$iface_name" > /dev/null 2>&1 ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] pppd for \"$iface_name\" is running: Waiting another period" >> $log_file
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else
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Trying to start pppd for \"$dsl_device\".." >> $log_file
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/usr/sbin/pppd call $iface_name > /dev/null 2>&1
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fi
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## - Remove device from array online_devices_arr
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## -
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for _index in ${!online_devices_arr[@]} ; do
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if [ "${online_devices_arr[$_index]}" = "$dsl_device" ]; then
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unset online_devices_arr[$_index]
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break
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fi
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done
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## - Also remove device from remote_gw_arr
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## -
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unset remote_gw_arr[$dsl_device]
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changed=true
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else
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## - <before> <now>
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## -
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## - offline offline
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if $DEBUG ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] $dsl_device is still offline" >> $log_file
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fi
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if ps -x | grep -E "/usr/sbin/pppd\s+call\s+$iface_name" > /dev/null 2>&1 ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] pppd for \"$iface_name\" is running: Waiting another period" >> $log_file
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else
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Trying to start pppd for \"$dsl_device\".." >> $log_file
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/usr/sbin/pppd call $iface_name > /dev/null 2>&1
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fi
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fi
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else
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if containsElement "$dsl_device" ${online_devices_arr[@]} ; then
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## - <before> <now>
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## -
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## - online online
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if $DEBUG ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] $dsl_device is still online" >> $log_file
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fi
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## - Check if remote gateway has changed
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## -
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if [ "$remote_gw_address" != "${remote_gw_arr[$dsl_device]}" ]; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Remote Gateway on device \"$dsl_device\" has changed: ${remote_gw_arr[$dsl_device]} --> $remote_gw_address" >> $log_file
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remote_gw_arr[$dsl_device]=$remote_gw_address
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filetime_PID_arr[$dsl_device]=`stat -c %Y /var/run/${dsl_device}.pid`
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changed=true
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else
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if $DEBUG ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Remote Gateway on device \"$dsl_device\": still ${remote_gw_arr[$dsl_device]}" >> $log_file
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fi
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## - Test if pid-file's modify time hs changed
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## -
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## - Notice: that happens if your provider forces a reconnect (mostly one time a day
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## - or in other words after 1440 minutes)
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## -
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_pid_file=/var/run/${dsl_device}.pid
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if [ -f $_pid_file ]; then
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if [ "`stat -c %Y $_pid_file`" != "${filetime_PID_arr[$dsl_device]}" ]; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Modify time for pid-file \"${dsl_device}.pid\" has changed" >> $log_file
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filetime_PID_arr[$dsl_device]=`stat -c %Y $_pid_file`
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changed=true
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else
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## - Check if routing through this dsl connection realy works
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## -
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failed=true
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if [ ${#ping_ip_arr[@]} -lt 1 ]; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] No ip-address for ping-test is set. Skipping test.." >> $log_file
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else
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for _key in ${!ping_ip_arr[@]} ; do
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/sbin/ip rule add to ${ping_ip_arr[$_key]} table $rt_name
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if ping -q -c2 ${ping_ip_arr[$_key]} >/dev/null 2>&1 ; then
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if $DEBUG ; then
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_local_gw=`curl -4 https://meine-ip.oopen.de 2> /dev/null`
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if [ -n "$_local_gw" ]; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Using local gateway \"$_local_gw\" for ping test" >> $log_file
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fi
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Debug ] Ping test (to ${ping_ip_arr[$_key]}) for device \"${dsl_device}\" was successful." >> $log_file
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fi
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/sbin/ip rule del to ${ping_ip_arr[$_key]} table $rt_name
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failed=false
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break
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fi
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/sbin/ip rule del to ${ping_ip_arr[$_key]} table $rt_name
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done
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if $failed ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Ping test for device \"${dsl_device}\" failed" >> $log_file
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i echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Status Devices \"$dsl_device\" changed" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Devices \"$dsl_device\" is now OFFLINE" >> $log_file
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_pid=`ps -ax | grep -e "pppd call $iface_name" | grep -v grep | awk '{print$1}'`
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Info ] Kill ppp-daemon for $iface_name (pid $_pid)" >> $log_file
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## - Remove device from array online_devices_arr
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## -
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for _index in ${!online_devices_arr[@]} ; do
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if [ "${online_devices_arr[$_index]}" = "$dsl_device" ]; then
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unset online_devices_arr[$_index]
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break
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fi
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done
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## - Also remove device from remote_gw_arr
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## -
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unset remote_gw_arr[$dsl_device]
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kill -9 $_pid
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changed=true
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fi
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fi
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fi
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else
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filetime_PID_arr[$dsl_device]="NOT FOUND"
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] No pid-file for connection \"${dsl_device}\"found" >> $log_file
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changed=true
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fi
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fi
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else
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## - <before> <now>
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## -
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## - offline online
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Status Devices \"$dsl_device\" changed" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Devices \"$dsl_device\" is now online" >> $log_file
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## - Add device to array online_devices_arr
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## -
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online_devices_arr+=("$dsl_device")
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remote_gw_arr[$dsl_device]=$remote_gw_address
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filetime_PID_arr[$dsl_device]=`stat -c %Y /var/run/${dsl_device}.pid`
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changed=true
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fi
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fi
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done
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if $changed ; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Status Online Devices changed" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Online Devices: ${online_devices_arr[@]}" >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Warn ] Reconfigure Routing: invoking script \"netconfig_dsl.sh\".." >> $log_file
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/root/bin/netconfig_dsl.sh > /dev/null 2>&1
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#/root/bin/netconfig_dsl_round-robin.sh > /dev/null 2>&1
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datum=`date +"%d.%m.%Y"`
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msg="[ `date +\"%H:%M:%S\"` ]: Status Online Devices changed..\n Online Devices: ${online_devices_arr[@]}\n\n Script \"netconfig_dsl.sh\" was invoked to reconfigure routing."
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echo -e "To:${admin_email}\n${content_type}\nSubject:DSL Status changed $company -- $datum\n\n${msg}\n" | /usr/sbin/sendmail -F "DSL Monitoring $company" -f $from_address $admin_email
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fi
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## - Set IP-adresses for Ping-Test at next run
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## -
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if [ ${#online_devices_arr[@]} -gt 0 ]; then
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ping_test_ip=""
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unset ping_ip_arr
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declare -i i=0
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for _host in $ping_test_hosts ; do
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while [ $i -lt 2 ]; do
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ping_test_ip=`dig +short $_host | head -1`
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if ping -q -c2 $ping_test_ip >/dev/null 2>&1 ; then
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ping_ip_arr+=("$ping_test_ip")
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let i++
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break
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fi
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done
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done
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if [ ${#ping_ip_arr[@]} -lt 1 ]; then
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] No ip-address for ping test found " >> $log_file
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echo "`date +'%Y-%m-%d %H:%M:%S'` [ Error ] Looked for IP-Addresses at hosts: $ping_test_hosts" >> $log_file
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fi
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fi
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sleep 30
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done
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exit 0
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