Convert unifi_sysvinit_all.deb to DIY.tar.gz

convert.sh

#!/bin/bash -e

self=$(readlink -f "$0")
root=$(dirname "$self")

version="$1"
checksum="$2"

if [ -z "$version" ]; then
  echo >&2 "Missing version specifier."
  echo >&2 "Usage: ${self} VERSION [SHA256]"
  exit 1
fi

echo "-- Checking dependencies"
for bin in curl ar tar gzip sha256sum awk stat rsync; do
  if ! which $bin >/dev/null 2>&1; then
    echo >&2 "   Binary ${bin} not found in PATH"
    exit 1
  fi
done

debfile="${root}/dl/${version}.deb"
debdir="${root}/tmp/${version}-deb"
tarfile="tmp/${version}.tar.gz"

mkdir -p "${root}/dl"

echo "-- Downloading UniFi Controller v${version}"
if [ -f "${debfile}" ]; then
  echo "   [SKIP] file already exist"
else
  curl -sL "http://dl.ubnt.com/unifi/${version}/unifi_sysvinit_all.deb" > "${debfile}"
  echo "   OK."
fi

echo "-- Verify download"
if [ -z "$checksum" ]; then
  echo "   [SKIP] expected checksum not given"
else
  debsum=$(sha256sum "$debfile" | awk '{ print $1 }')
  echo "   sha256 of download is ${debsum}"
  echo "   expected sha256 is    ${checksum}"
  if [ "$checksum" = "$debsum" ]; then
    echo "   checksums match"
  else
    echo >&2 "   checksum mismatch"
    exit 1
  fi
fi

echo "-- Unpacking .deb file"
rm -rf "$debdir"
mkdir -p "$debdir"
ar p "$debfile" data.tar.gz | tar xz -C "$debdir"

echo "-- Repacking .tar.gz"
rsync -a --delete "${debdir}/usr/lib/unifi/" "${root}/tmp/unifi-${version}"
ln -sf /usr/bin/mongod "${root}/tmp/unifi-${version}/bin/mongod"
tar czf "$tarfile" -C "${root}/tmp" "unifi-${version}"

tarsum=$(sha256sum "$tarfile" | awk '{ print $1 }')
tarsize=$(stat -c '%s' "$tarfile")
tarsize_human=$(( tarsize/1048576 ))
echo "   file:   ${tarfile}"
echo "   size:   ${tarsize} bytes (${tarsize_human} MB)"
echo "   sha256: ${tarsum}"