#!/bin/bash

# Downloads and install a .dmg from a URL

#

# Usage

# $ dmg_pkg_install [url]

#

# Adopted from https://gist.github.com/afgomez/4172338

if [[ $# -lt 1 ]]; then

  echo "Usage: dmg_pkg_install [url]"

  exit 1

fi

url=$*

# Generate a random file name

tmp_file=/tmp/`openssl rand -base64 10 | tr -dc '[:alnum:]'`.dmg

# Download file

echo "Downloading $url..."

curl -# -L -o $tmp_file $url

echo "Mounting image..."

volume=`hdiutil mount $tmp_file | tail -n1 | perl -nle '/(\/Volumes\/[^ ]+)/; print $1'`

# Locate .pkg

app_pkg=`find $volume/. -name *.pkg -maxdepth 1 -print0`

echo "Install pkg..."

installer -pkg $app_pkg -target /

# Unmount volume, delete temporal file

echo "Cleaning up..."

hdiutil unmount $volume -quiet

rm $tmp_file

echo "Done!"

exit 0