mirror of
https://github.com/uhi22/pyPLC.git
synced 2024-11-20 01:13:58 +00:00
89 lines
2.6 KiB
Bash
Executable file
89 lines
2.6 KiB
Bash
Executable file
#!/bin/bash
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# enter in the pyPLC directory, so that all subsequent pathes can be relative to this.
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cd "$( dirname "${BASH_SOURCE[0]}" )"
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# Function to start tcpdump
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start_tcpdump() {
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INTERFACE="eth0" # Change this to the interface you want to monitor
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OUTPUT_FILE="$1"
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tcpdump -i "$INTERFACE" -w "$OUTPUT_FILE" &> /dev/null &
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TCPDUMP_PID=$!
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echo "Started tcpdump with PID $TCPDUMP_PID on interface $INTERFACE, output file: $OUTPUT_FILE"
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}
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# Function to stop tcpdump
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stop_tcpdump() {
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if [ ! -z "$TCPDUMP_PID" ]; then
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echo "Stopping tcpdump with PID $TCPDUMP_PID"
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kill -SIGINT "$TCPDUMP_PID"
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fi
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}
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# Function to handle signals
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signal_handler() {
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echo "Caught signal, stopping tcpdump and exiting..."
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stop_tcpdump
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exit 1
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}
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# Set trap for signals: SIGINT (2), SIGTERM (15)
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trap 'signal_handler' 2 15
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# Set options for the bash: exit on error, treat unused variables as error, print the input as it is read.
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set -euv
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# Keep all IPv6 addresses on the interface down event.
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# Todo: flexible interface name.
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# Todo: On raspberry, without NetworkManager, this option does not help. After the down and up (see below), the IPv6 is missing.
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sysctl net.ipv6.conf.eth0.keep_addr_on_down=1
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# Shut down and activate the interface.
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# Todo: Why this needed? On raspberry, where the NetworkManager is not runnning, this disturbs, because
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# afterwards the pyPlc does not see the interfaces IPv6 address.
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# Todo: make this configurable, for the cases we need this.
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ip link set eth0 down
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ip link set can0 down
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sleep 1
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ip link set eth0 up
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ip link set can0 up type can restart-ms 100 bitrate 500000
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sleep 1
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# show the addresses
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ip addr
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# print the current directory to log. Should be the pyPLC directory.
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pwd
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# create directory for the log files.
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mkdir -p log
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# prepare the file names for the log files
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pushd log
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gzip *.log || true
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popd
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date=$(date "+%Y-%m-%d_%H%M%S")
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#logfile=./log/"$date"_pevNoGui.log
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#logfile=./log/pevNoGui.log
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index=`cat log/logindex`
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logfile=`printf "log/%04d_pevNoGui.log" $index`
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tcpdump_logfile=`printf "log/%04d_tcpdump.pcap" $index`
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index=$(($index + 1))
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echo $index > log/logindex
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echo "logfile: $logfile"
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echo "tcpdump_logfile: $tcpdump_logfile"
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# start the tcpdump
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#start_tcpdump "$tcpdump_logfile"
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echo "$date" > "$logfile"
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git log --oneline -1 >> "$logfile" || echo "Not a git repo" >> "$logfile"
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ip addr >> "$logfile"
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pwd >> "$logfile"
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# call the pyPlc python script
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#PYTHONUNBUFFERED=1 /usr/bin/python3 pevNoGui.py | tee -a "$logfile"
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PYTHONUNBUFFERED=1 /usr/bin/python3 listenerNoGui.py | tee -a "$logfile"
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pwd >> "$logfile"
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date >> "$logfile"
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# Stop the tcpdump when the pyPLC stopped:
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stop_tcpdump
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