Eric Loyd
107 lines
3.3 KiB
Bash
Executable File
107 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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# ==========================================================================
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# UNIVERSAL KASA HS103 NAGIOS PLUGIN
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# Usage: ./check_kasa.sh <IP_ADDRESS> <relay_state|rssi|on_time|sw_ver|mac>
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# ==========================================================================
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plugIP=""
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plugPort="9999"
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metric=""
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while getopts "H:m:P:" opt; do
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case "$opt" in
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H) plugIP="$OPTARG";;
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P) plugPort="$OPTARG";;
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m) metric="$OPTARG";;
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esac
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done
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shift $((OPTIND - 1))
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restOfLine="$@"
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if [ -z "$plugIP" ] || [ -z "$metric" ]; then
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echo "UNKNOWN - Missing arguments. Usage: $0 <IP> <metric>"
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echo " metric: relay_state rssi on_time sw_ver hw_ver mac model"
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exit 3
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fi
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# Pre-encrypted XOR payload for get_sysinfo
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# NOTE: Why this value is what it is is beyond the scope of this script
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PAYLOAD="AAAAI9Dw0qHYq9+61/XPtJS20bTAn+yV5o/hh+jK8J7rh+vLtpbr"
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# Fetch raw binary stream as clean decimal strings
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RAW_STREAM=$(echo "$PAYLOAD" | base64 -d | nc -w 3 "$plugIP" "$plugPort" | od -An -v -t u1)
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if [ -z "$RAW_STREAM" ]; then
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echo "CRITICAL - No network response from HS103 at $plugIP"
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exit 2
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fi
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# XOR Decryption Loop
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DECRYPTED_JSON=""
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KEY=171
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for BYTE in $RAW_STREAM; do
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if [ "$BYTE" -eq 0 ] && [ -z "$DECRYPTED_JSON" ]; then
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continue
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fi
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OUTPUT=$(( BYTE ^ KEY ))
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KEY=$BYTE
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DECRYPTED_JSON+="$(printf "\\$(printf '%03o' "$OUTPUT")")"
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done
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# Clean out trailing encryption anomalies
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CLEAN_JSON=$(echo "$DECRYPTED_JSON" | grep -o '{.*}' | sed 's/.$//')
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# Extract the alias name universally for clean alert messaging
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ALIAS=$(echo "$CLEAN_JSON" | jq -r '.get_sysinfo.alias')
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# Dynamic Evaluation Engine based on your CLI parameter Choice
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case "$metric" in
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relay_state)
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VALUE=$(echo "$CLEAN_JSON" | jq '.get_sysinfo.relay_state')
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if [ "$VALUE" -eq 1 ]; then
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echo "OK - ${ALIAS} Relay is ON | relay_state=1;;;;"
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exit 0
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else
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echo "CRITICAL - ${ALIAS} Relay is OFF | relay_state=0;;;;"
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exit 2
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fi
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;;
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rssi)
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VALUE=$(echo "$CLEAN_JSON" | jq '.get_sysinfo.rssi')
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# Standard Wi-Fi signal threshold parameters
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if [ "$VALUE" -ge -70 ]; then
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echo "OK - ${ALIAS} Wi-Fi Signal Strength: ${VALUE} dBm | rssi=${VALUE};-75;-85;;"
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exit 0
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elif [ "$VALUE" -lt -70 ] && [ "$VALUE" -ge -82 ]; then
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echo "WARNING - ${ALIAS} Wi-Fi Signal Weak: ${VALUE} dBm | rssi=${VALUE};-75;-85;;"
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exit 1
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else
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echo "CRITICAL - ${ALIAS} Wi-Fi Signal Dropping Out: ${VALUE} dBm | rssi=${VALUE};-75;-85;;"
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exit 2
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fi
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;;
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on_time)
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VALUE=$(echo "$CLEAN_JSON" | jq '.get_sysinfo.on_time')
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# Converts raw seconds to readable hours for clear telemetry status
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HOURS=$(echo "scale=2; $VALUE / 3600" | bc)
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echo "OK - ${ALIAS} Continuous Active Runtime: ${HOURS} Hours | on_time=${VALUE};;;;"
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exit 0
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;;
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sw_ver|hw_ver|mac|model)
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# Dynamic handling for inventory/metadata parameters
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VALUE=$(echo "$CLEAN_JSON" | jq -r ".get_sysinfo.${metric}")
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echo "OK - ${ALIAS} ${metric}: ${VALUE}"
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exit 0
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;;
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*)
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echo "UNKNOWN - Unsupported metric: ${metric}. Choose: relay_state, rssi, on_time, sw_ver, hw_ver, mac, model"
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exit 3
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;;
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esac
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