2013-02-11 04:01:36 +00:00
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#!/bin/bash
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# These are useful, or at worst not harmful, for all images we build.
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set -e
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[ -n "$ARCH" ]
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[ -n "$TARGET_ROOT" ]
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IMG_PATH=~/.cache/image-create
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CLOUD_IMAGES=${CLOUD_IMAGES:-http://cloud-images.ubuntu.com/}
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RELEASE=${RELEASE:-quantal}
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-$RELEASE-server-cloudimg-$ARCH-root.tar.gz}
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2013-02-27 23:31:56 +00:00
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SHA256SUMS=${SHA256SUMS:-https://cloud-images.ubuntu.com/$RELEASE/current/SHA256SUMS}
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2013-02-11 04:01:36 +00:00
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mkdir -p $IMG_PATH
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# TODO: don't cache -current forever.
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if [ ! -f $IMG_PATH/$BASE_IMAGE_FILE ] ; then
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echo "Fetching Base Image"
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2013-02-28 04:23:13 +00:00
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wget $SHA256SUMS -O $IMG_PATH/SHA256SUMS.ubuntu.$RELEASE.$ARCH
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2013-02-11 04:01:36 +00:00
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wget $CLOUD_IMAGES/$RELEASE/current/$BASE_IMAGE_FILE -O $IMG_PATH/$BASE_IMAGE_FILE.tmp
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2013-02-27 23:31:56 +00:00
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pushd $IMG_PATH
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2013-02-28 04:23:13 +00:00
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awk "/$BASE_IMAGE_FILE/ { print \$0 \".tmp\" }" SHA256SUMS.ubuntu.$RELEASE.$ARCH | sha256sum --check -
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2013-02-27 23:31:56 +00:00
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popd
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2013-02-11 04:01:36 +00:00
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mv $IMG_PATH/$BASE_IMAGE_FILE.tmp $IMG_PATH/$BASE_IMAGE_FILE
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fi
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# Extract the base image
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sudo tar -C $TARGET_ROOT -xzf $IMG_PATH/$BASE_IMAGE_FILE
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