#!/usr/bin/env ash

if [ "${1}" = "late" ]; then
  if [ -d /tmpRoot/var/packages/SurveillanceStation ]; then
    echo "Installing addon sspatch - ${1}"
    mkdir -p "/tmpRoot/usr/arc/addons/"
    cp -vf "${0}" "/tmpRoot/usr/arc/addons/"

    # Define the entries to be added
    ENTRIES=("0.0.0.0 synosurveillance.synology.com")

    # Loop over each entry
    for ENTRY in "${ENTRIES[@]}"
    do
    if [ -f /tmpRoot/etc/hosts ]; then
        # Check if the entry is already in the file
        if grep -Fxq "$ENTRY" /tmpRoot/etc/hosts; then
            echo "Entry $ENTRY already exists"
        else
            echo "Entry $ENTRY does not exist, adding now"
            echo "$ENTRY" >> /tmpRoot/etc/hosts
        fi
    fi
    if [ -f /tmpRoot/etc.defaults/hosts ]; then
        if grep -Fxq "$ENTRY" /tmpRoot/etc.defaults/hosts; then
            echo "Entry $ENTRY already exists"
        else
            echo "Entry $ENTRY does not exist, adding now"
            echo "$ENTRY" >> /tmpRoot/etc.defaults/hosts
        fi
    fi
    done
    SO_FILE="/tmpRoot/usr/lib/libssutils.so"
    [ ! -f "${SO_FILE}" ] && echo "SSPatch: libssutils.so does not exist" && exit 0

    # Check Sha256sum
    if [ "$(sha256sum "${SO_FILE}" | cut -d' ' -f1)" = "81b64d65f4a2a65626f9280ba43ea43f031a239af3152b859b79e1b5124cc6e3" ]; then
        PATCH="8548ffffff41be43000000e93dffffff/8548ffffff41be7b000000e93dffffff"
        cp -vf "${SO_FILE}" "${SO_FILE}.bak"
        cp -f "${SO_FILE}" "${SO_FILE}.tmp"
        xxd -c $(xxd -p "${SO_FILE}.tmp" 2>/dev/null | wc -c) -p "${SO_FILE}.tmp" 2>/dev/null |
            sed "s/${PATCH}/" |
            xxd -r -p >"${SO_FILE}" 2>/dev/null
        rm -f "${SO_FILE}.tmp"
        echo "SSPatch: libssutils.so is patched"
    elif [ "$(sha256sum "${SO_FILE}" | cut -d' ' -f1)" = "6a9636880dde48c6d7f0dc6f6337f33960fa12df67a8ed3a97aa9ff6fe45ce7d" ]; then
        PATCH="850b010000e8b684e5ff83f80141bc7b/850b010000e8b684e5ff83f80141bc43"
        cp -vf "${SO_FILE}" "${SO_FILE}.bak"
        cp -f "${SO_FILE}" "${SO_FILE}.tmp"
        xxd -c $(xxd -p "${SO_FILE}.tmp" 2>/dev/null | wc -c) -p "${SO_FILE}.tmp" 2>/dev/null |
            sed "s/${PATCH}/" |
            xxd -r -p >"${SO_FILE}" 2>/dev/null
        rm -f "${SO_FILE}.tmp"
        echo "SSPatch: libssutils.so is patched"
    else
        if [ -f "${SO_FILE}.bak" ]; then
            echo "SSPatch: libssutils.so is already patched"
        else
            echo "SSPatch: version not supported"
        fi
    fi
    cp -vf /usr/bin/license.sh /tmpRoot/usr/bin/license.sh
    cp -vf /usr/bin/S82surveillance.sh /tmpRoot/usr/bin/S82surveillance.sh
  fi
elif [ "${1}" = "uninstall" ]; then
  echo "Installing addon sspatch - ${1}"
  # To-Do
fi