#! /bin/sh
## keyfoo -- do something with a key, and e-mail it to its owner
## (C) 2001 Gergely Nagy <algernon@debian.org>
##
## Released under the terms of the GNU GPL v2.
##
## $Id: keyfoo,v 1.6 2001/06/27 14:30:43 mhp Exp $
## Last updated: <2001/06/27 16:30:27 algernon>
##

## some globals, initialized as empty
KF_KEY=
KF_ADDRESS=
KF_RECIPIENT=
KF_KEYID=
TEMPFILE=
KF_BODY=
KF_KEYFILE=
KF_KEYSERVER=keyring.debian.org
GPG=gpg
KF_MAIL_CMD='mutt -H "${KF_BODY}" -a "${KF_KEYFILE}"'



## this one prints the usage, *wonder*
keyfoo_usage ()
{
    cat <<EOF
keyfoo -- the key hacker script

Usage: keyfoo [id|email|whatever] <[address to send mail to]> [keyserver]
EOF
    exit ${1:-0}
}

## this one LARTs the user
keyfoo_not_configured ()
{
    cat <<EOF
keyfoo -- the key hacker script

keyfoo is not configured, no command specified to send the signed key,
please consult the documentation
EOF

    exit ${1:-1}
}

## this one parses the output of gpg --list-key
keyfoo_parse_gpg ()
{
    local kf_tmp
    kf_tmp=`gpg --list-key ${KF_KEY} | head -n 1`
    # and now a complicated regexp, I do this separately, so
    # the line will fit into 80 chars ;]
    KF_ADDRESS=`echo ${kf_tmp} | sed -e "s,^pub *[^ ]* *[0-9\-]* *,,"`
    KF_KEYID=`echo ${kf_tmp} | sed -e "s,^pub *[^\/]*\/\([^ ]*\) .*,0x\1,"`
}

## Here comes the main hackery-wackery
# first of all, check paramaters
if test $# -lt 1; then
    keyfoo_usage 1
fi

test -e /etc/keyfoorc && . /etc/keyfoorc
test -e ${HOME}/.keyfoorc && . ${HOME}/.keyfoorc

## Sanity check..
test -z "${KF_MAIL_CMD}" && keyfoo_not_configured

## determine the tempfile
if test -x /bin/tempfile; then
    TEMPFILE=`tempfile`
else
    TEMPFILE=${TMPDIR:-/tmp}/keyfoo.$$
fi

KF_KEY=$1;
test $# -ge 2 && test x"$2" != x && KF_RECIPIENT="$2"
KF_RECIPIENT="${KF_RECIPIENT:-$KF_ADDRESS}"
test $# -ge 3 && test x"$3" != x && KF_KEYSERVER="$3"

KF_PRESIGN="gpg --keyserver ${KF_KEYSERVER} --recv-key ${KF_KEY} ; gpg --list-sigs ${KF_KEY}"
test -z "${KF_PRESIGN}" || eval "${KF_PRESIGN}"

keyfoo_parse_gpg

# now, we got everything we'll ever need :]
# time to launch gpg --edit-key
gpg --sign-key "${KF_KEY}"

KF_SUBJECT="Your signed GPG key (Key ID ${KF_KEYID})"

## now mail the thing
# first, create a draft mail:
KF_BODY=${TEMPFILE}
cat >${KF_BODY} <<EOF
From: Colin Watson <cjwatson@debian.org>
To: ${KF_RECIPIENT}
Subject: ${KF_SUBJECT}
Fcc: =debian/keysigning

Hi,

Attached to this e-mail is your signed GPG key. I've also uploaded it to
the keyserver at ${KF_KEYSERVER}.

Cheers,
EOF

# export the key..
KF_KEYFILE="${TEMPFILE}.key"
$GPG --armor --export "${KF_KEY}" >"${KF_KEYFILE}"

# ..then launch the mailer
eval ${KF_MAIL_CMD}

rm -f "${KF_KEYFILE}" "${KF_BODY}"

$GPG --keyserver "${KF_KEYSERVER}" --send-key "${KF_KEY}"