#!/bin/sh

# Copyright (c) 2008 Jonathan McDowell <noodles@earth.li>
# GNU GPL; v2 or later
# Imports a standalone revocation certificate

set -e

if [ -z "$1" ] || [ -z "$2" ]; then
	echo "Usage: revoke-key revocationcertfile dir" >&2
	exit 1
fi

# avoid gnupg touching ~/.gnupg
GNUPGHOME=$(mktemp -d -t jetring.XXXXXXXX)
export GNUPGHOME
trap cleanup exit
cleanup () {
	rm -rf "$GNUPGHOME"
}

revfile=$(readlink -f "$1") # gpg works better with absolute keyring paths
keydir="$2"

basename=$(basename "$revfile")
date=`date -R`

keyid=$(gpg --with-colons --keyid long --options /dev/null --no-auto-check-trustdb < $keyfile | grep '^pub' | 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 --import $keydir/0x$keyid
gpg --import $revfile
gpg --no-auto-check-trustdb --options /dev/null \
	--export-options export-minimal,no-export-attributes \
	--export $keyid > $GNUPGHOME/0x$keyid

echo "Running gpg-diff:"
scripts/gpg-diff $keydir/0x$keyid $GNUPGHOME/0x$keyid

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."
else
	echo "Not updating key."
fi