Script to get JSON data from stream analyzer

#!/bin/sh

# Usage:
# Save script to /usr/local/bin/astra-scan
# Launch: astra-scan udp://239.255.1.1:1234

SERVER="example.com:8000"
LOGIN="admin"
PASS="admin"
ADDR="$1"

URL="http://$LOGIN:$PASS@$SERVER/control/"

function getID() {
    python -c "import json,sys; print(json.load(sys.stdin)[\"id\"])"
}

function apiCall() {
    CMD=$1
    OPT=$2

    case $CMD in
        "start")
            curl -sX POST -d "{\"cmd\":\"scan-init\",\"scan\":\"$OPT\"}" $URL | getID
            ;;
        "check")
            curl -sX POST -d "{\"cmd\":\"scan-check\",\"id\":\"$OPT\"}" $URL
            ;;
    esac
}

ID=$(apiCall "start" "$ADDR")
sleep 3
apiCall "check" "$ID"