#!/bin/sh

# Copyright (c) 2008 Jonathan McDowell <noodles@earth.li>
# GNU GPL; v2 or later
# Adds a new key to a keyring directory

set -e

if [ -z "$1" ] || [ -z "$2" ]; then
	echo "Usage: add-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`

if [ -f $keyfile ]; then
	keyid=$(gpg --with-colons --keyid long --options /dev/null --no-auto-check-trustdb < $keyfile | grep '^pub' | cut -d : -f 5)
else
	keyid=${1: -16:16}
fi

for keyring in *-pgp/ *-gpg/; do
	if [ -e $keyring/0x$keyid ]; then
		echo "0x$keyid already exists in $keyring - existing key or error."
		exit 1
	fi
done

# Check we have our keyrings available for checking the signatures
if [ ! -e output/keyrings/debian-keyring.gpg -o \
		-e output/keyrings/extra-keys.pgp ]; then
	make
fi

if [ -f $keyfile ]; then
	gpg --quiet --import $keyfile
else
	gpg --quiet --keyserver the.earth.li --recv-key $1 || true
	gpg --quiet --keyserver pgp.mit.edu --recv-key $1 || true
	gpg --quiet --keyserver keyserver.ubuntu.com --recv-key $1 || true
	gpg --quiet --keyserver the.earth.li --send-key $1
fi
(gpg --keyring output/keyrings/debian-keyring.gpg \
	--keyring output/keyrings/extra-keys.pgp --fingerprint 0x$keyid
gpg --keyring output/keyrings/debian-keyring.gpg \
	--keyring output/keyrings/extra-keys.pgp --check-sigs 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
	gpg --no-auto-check-trustdb --options /dev/null \
		--export $keyid > $keydir/0x$keyid
	bzr add $keydir/0x$keyid
	if ( echo $2 | egrep  -q '^(\./)?debian-(keyring|nonupload)-gpg/?$' ); then
		echo -n "Enter full name of new key: "
		read name
		echo -n "Enter Debian login of new key: "
		read login
		echo "0x$keyid $name <$login>" >> keyids
		sort keyids > keyids.$$ && mv keyids.$$ keyids
	fi
else
	echo "Not adding key."
fi
