michael@0: #!/bin/bash
michael@0: # This Source Code Form is subject to the terms of the Mozilla Public
michael@0: # License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0: # file, You can obtain one at http://mozilla.org/MPL/2.0/.
michael@0: 
michael@0: # Unpack a disk image to a specified target folder
michael@0: #
michael@0: # Usage: unpack-diskimage <image_file>
michael@0: #                         <mountpoint>
michael@0: #                         <target_path>
michael@0: 
michael@0: DMG_PATH=$1
michael@0: MOUNTPOINT=$2
michael@0: TARGETPATH=$3
michael@0: 
michael@0: # How long to wait before giving up waiting for the mount to finish (seconds)
michael@0: TIMEOUT=90
michael@0: 
michael@0: # If mnt already exists, then the previous run may not have cleaned up
michael@0: # properly.  We should try to umount and remove the mnt directory.
michael@0: if [ -d $MOUNTPOINT ]; then
michael@0:     echo "mnt already exists, trying to clean up"
michael@0:     hdiutil detach $MOUNTPOINT -force
michael@0:     rm -rdfv $MOUNTPOINT
michael@0: fi
michael@0: 
michael@0: # Install an on-exit handler that will unmount and remove the '$MOUNTPOINT' directory
michael@0: trap "{ if [ -d $MOUNTPOINT ]; then hdiutil detach $MOUNTPOINT -force; rm -rdfv $MOUNTPOINT; fi; }" EXIT
michael@0: 
michael@0: mkdir -p $MOUNTPOINT
michael@0: 
michael@0: hdiutil attach -verbose -noautoopen -mountpoint $MOUNTPOINT "$DMG_PATH"
michael@0: # Wait for files to show up
michael@0: # hdiutil uses a helper process, diskimages-helper, which isn't always done its
michael@0: # work by the time hdiutil exits. So we wait until something shows up in the
michael@0: # mnt directory. Due to the async nature of diskimages-helper, the best thing
michael@0: # we can do is to make sure the glob() rsync is making can find files.
michael@0: i=0
michael@0: while [ "$(echo $MOUNTPOINT/*)" == "$MOUNTPOINT/*" ]; do
michael@0:     if [ $i -gt $TIMEOUT ]; then
michael@0:         echo "No files found, exiting"
michael@0:         exit 1
michael@0:     fi
michael@0:     sleep 1
michael@0:     i=$(expr $i + 1)
michael@0: done
michael@0: # Now we can copy everything out of the $MOUNTPOINT directory into the target directory
michael@0: rsync -av $MOUNTPOINT/* $MOUNTPOINT/.DS_Store $MOUNTPOINT/.background $MOUNTPOINT/.VolumeIcon.icns $TARGETPATH/.
michael@0: hdiutil detach $MOUNTPOINT
michael@0: rm -rdf $MOUNTPOINT
michael@0: # diskimage-helper prints messages to stdout asynchronously as well, sleep
michael@0: # for a bit to ensure they don't disturb following commands in a script that
michael@0: # might parse stdout messages
michael@0: sleep 5