mirror of
https://github.com/uhi22/pyPLC.git
synced 2024-11-10 01:05:42 +00:00
72 lines
2 KiB
Bash
Executable file
72 lines
2 KiB
Bash
Executable file
#!/bin/bash
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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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# Todo: explain this
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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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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?
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ip link set eth0 down
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sleep 1
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ip link set eth0 up
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sleep 1
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# show the addresses
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ip addr
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# todo: flexible path name
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mkdir -p /home/pi/myprogs/pyPLC/log
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# prepare the file names for the log files
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date=$(date "+%Y-%m-%d_%H%M%S")
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logfile=/home/pi/myprogs/pyPLC/log/"$date"_pevNoGui.log
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tcpdump_logfile=/home/pi/myprogs/pyPLC/log/"$date"_tcpdump.pcap
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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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# Todo: flexible path name
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cd /home/pi/myprogs/pyPLC/
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#/usr/bin/python3 /home/user/projects/pyPLC/pevNoGui.py | tee -a "$logfile"
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#stdbuf -oL -eL /usr/bin/python3 /home/user/projects/pyPLC/pevNoGui.py | tee -a "$logfile"
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#PYTHONUNBUFFERED=1 /usr/bin/python3 /home/user/projects/pyPLC/pevNoGui.py | stdbuf -oL -eL tee -a "$logfile"
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PYTHONUNBUFFERED=1 /usr/bin/python3 /home/pi/myprogs/pyPLC/pevNoGui.py | tee -a "$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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