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#!/bin/bash
# Copyright (c) 2012 Jonathan McDowell <noodles@earth.li>
# GNU GPL; v2 or later
# Given a key directory clean the keys to be minimal or clean
set -e
if [ -z "$1" ] || [ -z "$2" ]; then
echo "Usage: clean-keydir [clean|minimal] dir" >&2
exit 1
fi
if [ "$1" == "clean" ]; then
GPGOPTIONS="--keyring $(readlink -f output/keyrings/debian-keyring.gpg) --keyring $(readlink -f output/keyrings/debian-nonupload.gpg) --keyring $(readlink -f output/keyrings/debian-maintainers.gpg) --no-auto-check-trustdb --import-options import-clean --export-options export-clean"
elif [ "$1" == "minimal" ]; then
GPGOPTIONS="--no-auto-check-trustdb --import-options import-minimal --export-options export-minimal"
else
echo "Must specify clean or minimal; not $1" >&2
exit 1
fi
if [ ! -d $2 ]; then
echo "$2 is not a directory" >&2
exit 1
fi
# avoid gnupg touching ~/.gnupg
GNUPGHOME=$(mktemp -d -t jetring.XXXXXXXX)
export GNUPGHOME
trap cleanup exit
cleanup () {
rm -rf "$GNUPGHOME"
}
cd $2
for key in 0x*; do
if gpg --quiet $GPGOPTIONS --import $key &&
gpg --quiet $GPGOPTIONS --export $key > $key.new &&
[ -s $key.new ]; then
OLDSIZE=$(stat -c "%s" $key)
NEWSIZE=$(stat -c "%s" $key.new)
if [ $OLDSIZE -gt $NEWSIZE ]; then
echo "Cleaning $key [$OLDSIZE] -> [$NEWSIZE]"
mv $key.new $key
fi
fi
[ -e $key.new ] && rm $key.new
done
exit 0
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