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#!/bin/sh
# Copyright (c) 2008 Jonathan McDowell <noodles@earth.li>
# GNU GPL; v2 or later
# Updates an existing key in a keyring dir
set -e
if [ -z "$1" ] || [ -z "$2" ]; then
echo "Usage: update-key keyfile dir" >&2
exit 1
fi
# avoid gnupg touching ~/.gnupg
GNUPGHOME=$(mktemp -d -t jetring.XXXXXXXX)
export GNUPGHOME
trap cleanup exit
cleanup () {
rm -rf "$GNUPGHOME"
}
keyfile=$(readlink -f "$1") # gpg works better with absolute keyring paths
keydir="$2"
basename=$(basename "$keyfile")
date=`date -R`
keyid=$(gpg --with-colons --keyid long --options /dev/null --no-auto-check-trustdb < $keyfile | grep '^pub' | head -n 1 | cut -d : -f 5)
if [ ! -e $keydir/0x$keyid ]; then
echo "0x$keyid isn't already in $keydir - new key or error."
exit 1
fi
gpg --quiet --import $keydir/0x$keyid
summary=$(gpg --import $keyfile 2>&1 | scripts/parse-gpg-update 0x$keyid)
gpg --no-auto-check-trustdb --options /dev/null \
--export $keyid > $GNUPGHOME/0x$keyid
case "$summary" in
*:*)
# Something changed
;;
*)
# Nothing changed, exit
echo "No changes to $summary"
exit
esac
echo "Running gpg-diff:"
(
echo $summary
echo
scripts/gpg-diff $keydir/0x$keyid $GNUPGHOME/0x$keyid
) | sensible-pager
echo "Are you sure you want to update this key? (y/n)"
read n
if [ "x$n" = "xy" -o "x$n" = "xY" ]; then
mv $GNUPGHOME/0x$keyid $keydir/0x$keyid
echo "Updated key."
echo $summary >> update.log
else
echo "Not updating key."
fi
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