#! /bin/sh

set -e

VERSION="0.3.1"

if [ -z "$*" ]; then
	echo "Send people their newly signed GPG key by mail."
	echo "Usage: $0 keyid ..."
	exit 1
fi

if [ -e ~/.gpg-mailkeysrc ] ; then
	. ~/.gpg-mailkeysrc
fi
if [ -n "$EMAIL" ]; then
	FROM="$EMAIL"
fi
if [ -z "$SUBJECT" ]; then
	SUBJECT="Your signed GPG key"
fi
if [ -z "$NAME" ]; then
	NAME=`getent passwd $USER | cut -d: -f5 | cut -d, -f1`
fi
if [ -z "$TEXT" ]; then
	TEXT="Hi,

Here is your signed GPG key.

Enjoy,
$NAME"
fi

FAILKEYS=

while [ -n "$1" ]; do
	echo -n "[$1] "
	TEMPFILE=`mktemp -t gpg2mail.XXXXXX`
	ADDR=`gpg --with-colons --fixed-list-mode --list-key $1 | sed -e 's/^uid:[^re][^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:[^:]*:\([^:<]*<[^:>]*>\):.*/@@uid@@ \1/' -e '/^@@uid@@ /!d' -e 's/([^)]*)//g' -e 's/  */ /g' -e 's/^@@uid@@ //' | head -1`
	if [ -z "$ADDR" ]; then
		echo "(no usable user ids)"
		FAILKEYS="$FAILKEYS:$1"
		shift 1
		continue
	fi
	BOUNDARY="ksp-$$-boundary-$RANDOM"
	
	echo -n "$ADDR:"
	if [ $FROM ]; then
		echo >$TEMPFILE "From: $NAME <$FROM>"
	fi
cat << EOM >> $TEMPFILE
To: $ADDR
Subject: $SUBJECT
User-Agent: gpg-mailkeys/$VERSION
MIME-Version: 1.0
Content-Type: multipart/mixed; micalg=pgp-sha1;
    protocol="application/pgp-signature"; boundary="$BOUNDARY"
Content-Disposition: inline



--$BOUNDARY
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
 

$TEXT

EOM

if [ -f ~/.signature ]; 
	then echo "--=20" >> $TEMPFILE 
	cat ~/.signature >> $TEMPFILE
fi

cat << EOM >> $TEMPFILE

--$BOUNDARY
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment; filename="$1.sig"

`gpg --armor --export $1`

--$BOUNDARY--
EOM
	echo -n " sending"
	/usr/sbin/sendmail -t <$TEMPFILE
	rm $TEMPFILE
	echo " done."
	shift 1
done

if [ -n "$FAILKEYS" ]; then
	echo
	echo "Note: The following keys could not be sent:"
	echo "$FAILKEYS" | tr ':' '\n' | sed -e '/^ *$/d' -e 's/^/  /'
fi