/mandos/release

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67 by Teddy Hogeborn
* mandos-keygen: New program to generate new client keys on
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#!/bin/sh
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# 
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# Mandos key generator - create new OpenPGP keys for Mandos clients
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# 
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# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
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# 
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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#     This program is distributed in the hope that it will be useful,
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#     but WITHOUT ANY WARRANTY; without even the implied warranty of
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#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#     GNU General Public License for more details.
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# 
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# You should have received a copy of the GNU General Public License
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.
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# 
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# 
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KEYDIR="/etc/mandos"
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KEYTYPE=DSA
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KEYLENGTH=1024
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KEYNAME="`hostname --fqdn`"
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KEYEMAIL=""
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KEYCOMMENT="Mandos client key"
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KEYEXPIRE=0
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FORCE=no
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KEYCOMMENT_ORIG="$KEYCOMMENT"
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# Parse options
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TEMP=`getopt --options d:t:l:n:e:c:x:f \
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    --longoptions dir:,type:,length:,name:,email:,comment:,expire:,force \
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    --name "$0" -- "$@"`
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eval set -- "$TEMP"
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while :; do
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    case "$1" in
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	-d|--dir) KEYDIR="$2"; shift 2;;
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	-t|--type) KEYTYPE="$2"; shift 2;;
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	-l|--length) KEYLENGTH="$2"; shift 2;;
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	-n|--name) KEYNAME="$2"; shift 2;;
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	-e|--email) KEYEMAIL="$2"; shift 2;;
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	-c|--comment) KEYCOMMENT="$2"; shift 2;;
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	-x|--expire) KEYCOMMENT="$2"; shift 2;;
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	-f|--force) FORCE=yes; shift;;
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	--) shift; break;;
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	*) echo "Internal error" >&2; exit 1;;
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    esac
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done
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if [ "$#" -gt 0 ]; then
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    echo "Unknown arguments: '$@'" >&2
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    exit 1
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fi
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SECKEYFILE="$KEYDIR/seckey.txt"
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PUBKEYFILE="$KEYDIR/pubkey.txt"
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# Check for some invalid values
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if [ -d "$KEYDIR" ]; then :; else
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    echo "$KEYDIR not a directory" >&2
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    exit 1
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fi
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if [ -w "$KEYDIR" ]; then :; else
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    echo "Directory $KEYDIR not writeable" >&2
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    exit 1
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fi
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if [ -z "$KEYTYPE" ]; then
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    echo "Empty key type" >&2
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    exit 1
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fi
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if [ -z "$KEYNAME" ]; then
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    echo "Empty key name" >&2
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    exit 1
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fi
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if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
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    echo "Invalid key length" >&2
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    exit 1
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fi
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if [ -z "$KEYEXPIRE" ]; then
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    echo "Empty key expiration" >&2
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    exit 1
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fi
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# Make FORCE be 0 or 1
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case "$FORCE" in
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    [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
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    [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
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esac
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if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
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    && [ "$FORCE" -eq 0 ]; then
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    echo "Refusing to overwrite old key files; use --force" >&2
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    exit 1
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fi
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# Set lines for GPG batch file
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if [ -n "$KEYCOMMENT" ]; then
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    KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
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fi
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if [ -n "$KEYEMAIL" ]; then
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    KEYEMAILLINE="Name-Email: $KEYEMAIL"
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fi
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# Create temp files
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BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
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SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
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PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"
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trap "rm --force $PUBRING $BATCHFILE; shred --remove $SECRING" EXIT
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# Create batch file for GPG
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cat >"$BATCHFILE" <<EOF
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Key-Type: $KEYTYPE
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Key-Length: $KEYLENGTH
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#Key-Usage: encrypt,sign,auth
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Name-Real: $KEYNAME
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$KEYCOMMENTLINE
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$KEYEMAILLINE
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Expire-Date: $KEYEXPIRE
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%pubring $PUBRING
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%secring $SECRING
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%commit
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EOF
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umask 027
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gpg --no-random-seed-file --quiet --batch --no-tty \
70 by Teddy Hogeborn
* initramfs-tools-hook (gpg): Added "--no-random-seed-file" and
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    --no-default-keyring --no-options --batch \
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    --secret-keyring "$SECRING" --keyring "$PUBRING" \
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    --gen-key "$BATCHFILE"
67 by Teddy Hogeborn
* mandos-keygen: New program to generate new client keys on
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rm --force "$BATCHFILE"
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if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
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    2>/dev/null; then
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    shred --remove "$SECKEYFILE"
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fi
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if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
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    2>/dev/null; then
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    rm --force "$PUBKEYFILE"
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fi
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FILECOMMENT="Mandos client key for $KEYNAME"
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if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
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    FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
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fi
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if [ -n "$KEYEMAIL" ]; then
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    FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
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fi
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gpg --no-random-seed-file --quiet --batch --no-tty --armor \
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    --no-default-keyring --secret-keyring "$SECRING" \
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    --keyring "$PUBRING" --export-options export-minimal \
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    --comment "$FILECOMMENT" --output "$SECKEYFILE" \
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    --export-secret-keys
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gpg --no-random-seed-file --quiet --batch --no-tty --armor \
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    --no-default-keyring --secret-keyring "$SECRING" \
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    --keyring "$PUBRING" --export-options export-minimal \
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    --comment "$FILECOMMENT" --output "$PUBKEYFILE" \
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    --export