tbupdate

#!/bin/bash
#####
# tbupdate - a simple way to update vanilla thunderbird in linux
#
# thunderbird will install to a folder named "thunderbird" in tbdir
# you may change this, if you want thunderbird installed somewhere else.
# You will probably want to add $tbdir/thunderbird to your $PATH, so
# you can launch thunderbird from the commandline. I prefer $tbdir to
# be /opt/mozilla, but I leave that decision to you.
##########
tbdir="/opt/mozilla"
##########

showhelp()
{
  echo "
To download the latest vanilla thunderbird:
  $0 -v

To download the latest beta:
  $0 -b

To download both:
  $0 -a

Mix and match:
  $0 -vb

"
}

versionsort()
{
  local sortedversions="$(echo -e "$1\n$2" | sort -V)"
  #echo $sortedversions
  latestversion="$(echo "$sortedversions" | tail -1)"
}

gettburl()
{
  bits="$(uname -m)"
  [[ "$bits" == "x86_64" ]] && os="linux64" || os="linux"
  lang="$(echo "$LANG" | sed -e 's/\..*$//' -e 's/_/-/')"
  if [[ "$edition" == "nightly" ]]
  then
    destdir="$tbdir/nightly"
    tburl="https://download.mozilla.org/?product=thunderbird-nightly-latest-ssl&os=$os&lang=$lang"
  elif [[ "$edition" == "beta" ]]
  then
    destdir="$tbdir/beta"
    tburl="https://download.mozilla.org/?product=thunderbird-beta-latest-ssl&os=$os&lang=$lang"
  elif [[ "$edition" == "developer" ]]
  then
    destdir="$tbdir/devedition"
    tburl="https://download.mozilla.org/?product=thunderbird-devedition-latest-ssl&os=$os&lang=$lang"
  elif [[ "$edition" == "vanilla" ]]
  then
    destdir="$tbdir/vanilla"
    tburl="https://download.mozilla.org/?product=thunderbird-latest-ssl&os=$os&lang=$lang"
  fi
}

gettbversion()
{
  if [[ "$edition" == "nightly" ]]
  then
    tbversion=$(curl -s -L -I "$tburl" \
      | grep Location \
      | cut -d '/' -f 8 \
      | cut -d '.' -f 1-2 \
      | sed 's/thunderbird-//')
  else
    tbversion=$(curl -s -L -I "$tburl" \
      | grep -o '/releases/[^/]*' \
      | cut -d '/' -f 3)
  fi
  #echo $tbversion
  local localthunderbird="$destdir"/thunderbird/thunderbird
  if [[ -e "$localthunderbird" ]]
  then
    systbversion="$(cat "$destdir"/tb_version.txt)"
  else
    # if thunderbird hasn't been installed yet,
    # set the system thunderbird version to zero.
    systbversion=0
  fi
}

ckdirperms(){
  local dir=$1
  if [[ "$(id -u)" == "$(stat -c '%u' "$dir")" ]]
  then
    if [[ "$(stat -c "%a" "$dir")" -ge 700 ]]
    then
      return 0
    fi
  fi
  return 1
}

mkdestdir(){
  local dir=$1
  local parentdir=$(dirname "$dir")
  if [[ -d "$parentdir" ]]
  then
    if ckdirperms "$parentdir"
    then
      if [[ -d "$dir" ]]
      then
        if ckdirperms "$dir"
        then
          return 0
        else
          echo "  You don't have permission to write to $dir"
        fi
      else
        mkdir -p "$dir"
        return 0
      fi
    else
      echo "  You don't have permission to write to $parentdir"
    fi
  else
    if mkdestdir "$parentdir"
    then
      mkdir -p "$dir"
      return 0
    else
      echo "Could not create $parentdir"
    fi
  fi
  return 1
}

updatetb(){
  echo "checking for updates for $edition thunderbird ..."
  versionsort "$systbversion" "$tbversion"
  if [[ "$systbversion" != "$latestversion" ]]
  then
    if mkdestdir "$destdir"
    then
      echo "updating $edition thunderbird to version $latestversion ..."
      rm -rf "$destdir"/thunderbird
      if (curl --progress-bar -L "$tburl") | (cd "$destdir" && tar xjpf -)
      then
        echo "thunderbird updated!"
        echo "$tbversion" > "$destdir"/tb_version.txt
      else
        echo "there was a problem :-("
      fi
    else
      echo "  There is an update available: $latestversion"
      echo "  Please rerun this command as root to update thunderbird."
    fi
  else
    echo "  No updates needed"
  fi
}

tbupdate(){
  edition=$1
  gettburl
  gettbversion 
  updatetb
}

while getopts ":ndbva" opt; do
  case $opt in
    b)
      tbupdate "beta"
      ;;
    v)
      tbupdate "vanilla"
      ;;
    a)
      for edition in "vanilla" "beta"; do
        tbupdate "$edition"
      done
      ;;
    *)
      showhelp
      exit 0
      ;;
  esac
done

if [[ $# -eq 0 ]]
then
  showhelp
fi