control a tplink HS100/HS110 smart plug from bash/the cli

tplink.sh

#!/bin/bash

# Bash script to control a TPLink HS110 or HS100 smart plug.

# Usage: $0 -u username -p password -d "?" => list devices, and should output token.
# Usage: $0 -t <token> -d <device_id> -o off => turn off..
# Usage: $0 -t <token> -d <device_id> -o off => turn on..

# Default action is to turn the first device found off.

set -u
ON_OFF="off"
TOKEN=""
DEVICE_ID=""
APPSERVERURL="https://eu-wap.tplinkcloud.com"
USERNAME=""
PASSWORD=""


while getopts "o:t:d:u:p:" o; do
    case "${o}" in
        o)
            ON_OFF=${OPTARG}
            ;;
        t)
            TOKEN=${OPTARG}
            USERNAME=""
            PASSWORD=""
            ;;
        u)
            TOKEN=""
            USERNAME=${OPTARG}
            ;;
        p)
            PASSWORD=${OPTARG}
            ;;
        d)
            DEVICE_ID=${OPTARG}
            ;;
        *)
            echo "Usage: $0 -o on|off -t TOKEN -d DEVICE_ID  ... skipping token/device_id results in the API being queried more"
            echo "Usage: $0 -o on|off -u TpLinkUsername -p TpLinkPassword "
            echo "  - no DEVICE_ID -> use the first one from querying"
            exit 1
    esac
done


if [ "$ON_OFF" != "on" -a "$ON_OFF" != "off" ]; then
    echo "Usage: $0 -o on|off"
    exit 1
fi

if [ "$TOKEN" = "" ]; then
    if [ "x$USERNAME" = "x" -o "x$PASSWORD" = "x" ]; then
        echo "Can't get a token without a username/password; use $0 ... -u whatever@something.com -p TopSecret "
        exit 1
    fi

    TOKEN=$(curl -s -XPOST https://wap.tplinkcloud.com -H "Content-Type: application/json" -d '
    {
        "method" : "login",
        "params": {
            "appType": "Kasa_Android",
            "cloudPassword": "'$PASSWORD'",
            "cloudUserName": "'$USERNAME'",
            "terminalUUID": "'$(< /proc/sys/kernel/random/uuid)'"
        }
    } ' | jq -r ".result.token" )

    echo "Retrieved token of : $TOKEN from API "
fi

if [ "$DEVICE_ID" = "" -o "$DEVICE_ID" = "?" ]; then
    DEVICE_LIST=$(curl -s -XPOST "https://wap.tplinkcloud.com?token=$TOKEN" -H "Content-Type: application/json" -d '
    { "method" : "getDeviceList" } ' )

    if [ "$DEVICE_ID" = "?" ]; then
        echo "Device List -> "
        echo $DEVICE_LIST | jq .
        exit 0
    fi

    APPSERVERURL=$(echo $DEVICE_LIST | jq -r .result.deviceList[0].appServerUrl)
    DEVICE_ID=$(echo $DEVICE_LIST | jq -r .result.deviceList[0].deviceId)

    echo "APP Server URL : $APPSERVERURL "
    echo "DEVICE ID: $DEVICE_ID"
fi



# Response like: 
# {"error_code":0,"result":{"responseData":"{\"system\":{\"set_relay_state\":{\"err_code\":0}}}"}}

WHAT=0
if [ "$ON_OFF" = "on" ]; then
    echo "Turn plug on ... "
    WHAT=1
fi

echo "Turn plug -> $WHAT ... "
CHECK=$(curl -s -XPOST "$APPSERVERURL/?token=$TOKEN" -H "Content-Type: application/json" -d '
{
    "method": "passthrough",
    "params": {
        "deviceId": "'$DEVICE_ID'", 
        "requestData": "{\"system\": {\"set_relay_state\":{\"state\":'$WHAT'}}}" 
   }
}')

if [ $(echo $CHECK | jq -r .error_code) = "0" ]; then
    echo "Worked..."
    exit 0
fi

echo "Check: $CHECK"
exit 1