125 lines
3.7 KiB
Bash
125 lines
3.7 KiB
Bash
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#! /bin/bash
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# tg_shutdown.sh - Automated shutdown and reboot on receipt of talkgroup
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# Copyright (C) 2017 Tony Corbett, G0WFV and Stuart Scott, VK6LS
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USAp
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# exit status ...
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# 1 script not run as root
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# 2 ini file doesn't exist
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### CONFIG VARIABLES ###
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sysopCallsign=XX0XXX
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iniFile=/path/to/MMDVM.ini
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shutdownTG=999999
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rebootTG=888888
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allowShutdown=1
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allowReboot=1
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### DON'T EDIT BELOW HERE ###
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# exit if we're not root ...
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[[ $EUID -ne 0 ]] && exit 1
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# exit if we can't find the ini file
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[[ -f $iniFile ]] || exit 2
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# process the inifile and convert to variables ...
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#
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# [Foo]
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# Bar=Baz
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#
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# ... becomes the variable $FooBar with the value "Baz"
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# (NOTE: spaces in section headers are replaced by underscores)
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#
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# a real life example ...
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#
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# [General]
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# Callsign=G0WFV
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#
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# ... becomes the variable $GeneralCallsign with the value "G0WFV"
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foo=$(
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cat $iniFile | while read line
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do
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if echo $line | grep '^#.*$' >/dev/null # comment line
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then
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# Ignore!
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continue
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elif echo $line | grep '^$' >/dev/null # blank line
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then
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# Ignore!
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continue
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elif echo $line | grep '^\[.*\]$' >/dev/null # [Section Header]
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then
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iniSection=$(echo $line | sed 's/^\[\(.*\)\]$/\1/' | sed 's/[ -]//g')
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elif echo $line | grep '^.*=.*$' >/dev/null # Key=Value pair
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then
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iniKey=$(echo $line | sed 's/\(.*\)=.*$/\1/')
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iniValue=$(echo $line | sed 's/.*=\(.*\)$/\1/')
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echo $iniSection$iniKey=\"$iniValue\" # print the result in a specific format
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else # hopefully we'll never get here, but you never know!
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continue
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fi
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done
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)
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eval $foo
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# fix filepath if it doesn't end with a /
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[[ "$(echo ${LogFilePath: -1})" != "/" ]] && LogFilePath="$LogFilePath/"
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currentDate=foo # dummy current date variable to kick off the 1st tail!
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shuttingDown=0
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while true # main outer loop (run this forever!)
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do
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checkDate=$(date -u +%Y-%m-%d)
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if [ "$checkDate" != "$currentDate" ]
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then
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kill $tailPID 2>/dev/null
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currentDate=$checkDate
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logFile=$LogFilePath$LogFileRoot-$currentDate.log
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tail -n 0 -F $logFile | while read line # inner loop to tail the logfile
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do
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# only react to sysop callsign ...
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foo=$(echo $line | grep "received RF voice header from $sysopCallsign to TG")
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if [ $? = 0 ]
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then
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TG=$(echo $line | sed "s/.*TG\(.*\)$/\1/g")
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if [ $TG -eq $shutdownTG ] && [ $shuttingDown -eq 0 ] && [ $allowShutdown -eq 1 ]
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then
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# shutdown in 1 minute ...
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shutdown -h +1 >/dev/null 2>&1 && shuttingDown=1
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elif [ $TG -eq $rebootTG ] && [ $shuttingDown -eq 0 ] && [ $allowReboot -eq 1 ]
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then
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# reboot in 1 minute ...
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shutdown -r +1 >/dev/null 2>&1 && shuttingDown=1
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elif [ $shuttingDown -eq 1 ]
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then
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# cancel shutdown or reboot if sysop tx any TG in 1 min grace period ...
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shutdown -c && shuttingDown=0
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fi
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fi
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done & 2>/dev/null # inner loop is run in background so we can periodically check if the date's changed
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tailPID=$(($! - 1)) # save the PID of the inner loop so we can kill it when the date rolls over
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fi
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sleep 1 # check every second for date rollover (reduces cpu load)
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done
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