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