/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
#!/bin/sh
# 
# Mandos key generator - create new OpenPGP keys for Mandos clients
# 
# Copyright © 2007-2008 Teddy Hogeborn & Björn Påhlsson
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
#     This program is distributed in the hope that it will be useful,
#     but WITHOUT ANY WARRANTY; without even the implied warranty of
#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#     GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
# 
# Contact the authors at <mandos@fukt.bsnet.se>.
# 

KEYDIR="/etc/mandos"
KEYTYPE=DSA
KEYLENGTH=1024
KEYNAME="`hostname --fqdn`"
KEYEMAIL=""
KEYCOMMENT="Mandos client key"
KEYEXPIRE=0
FORCE=no
KEYCOMMENT_ORIG="$KEYCOMMENT"

# Parse options
TEMP=`getopt --options d:t:l:n:e:c:x:f \
    --longoptions dir:,type:,length:,name:,email:,comment:,expire:,force \
    --name "$0" -- "$@"`

eval set -- "$TEMP"
while :; do
    case "$1" in
	-d|--dir) KEYDIR="$2"; shift 2;;
	-t|--type) KEYTYPE="$2"; shift 2;;
	-l|--length) KEYLENGTH="$2"; shift 2;;
	-n|--name) KEYNAME="$2"; shift 2;;
	-e|--email) KEYEMAIL="$2"; shift 2;;
	-c|--comment) KEYCOMMENT="$2"; shift 2;;
	-x|--expire) KEYCOMMENT="$2"; shift 2;;
	-f|--force) FORCE=yes; shift;;
	--) shift; break;;
	*) echo "Internal error" >&2; exit 1;;
    esac
done
if [ "$#" -gt 0 ]; then
    echo "Unknown arguments: '$@'" >&2
    exit 1
fi

SECKEYFILE="$KEYDIR/seckey.txt"
PUBKEYFILE="$KEYDIR/pubkey.txt"

# Check for some invalid values
if [ -d "$KEYDIR" ]; then :; else
    echo "$KEYDIR not a directory" >&2
    exit 1
fi
if [ -w "$KEYDIR" ]; then :; else
    echo "Directory $KEYDIR not writeable" >&2
    exit 1
fi

if [ -z "$KEYTYPE" ]; then
    echo "Empty key type" >&2
    exit 1
fi

if [ -z "$KEYNAME" ]; then
    echo "Empty key name" >&2
    exit 1
fi

if [ -z "$KEYLENGTH" ] || [ "$KEYLENGTH" -lt 512 ]; then
    echo "Invalid key length" >&2
    exit 1
fi

if [ -z "$KEYEXPIRE" ]; then
    echo "Empty key expiration" >&2
    exit 1
fi

# Make FORCE be 0 or 1
case "$FORCE" in
    [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) FORCE=1;;
    [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) FORCE=0;;
esac

if { [ -e "$SECKEYFILE" ] || [ -e "$PUBKEYFILE" ]; } \
    && [ "$FORCE" -eq 0 ]; then
    echo "Refusing to overwrite old key files; use --force" >&2
    exit 1
fi

# Set lines for GPG batch file
if [ -n "$KEYCOMMENT" ]; then
    KEYCOMMENTLINE="Name-Comment: $KEYCOMMENT"
fi
if [ -n "$KEYEMAIL" ]; then
    KEYEMAILLINE="Name-Email: $KEYEMAIL"
fi

# Create temp files
BATCHFILE="`mktemp -t mandos-gpg-batch.XXXXXXXXXX`"
SECRING="`mktemp -t mandos-gpg-secring.XXXXXXXXXX`"
PUBRING="`mktemp -t mandos-gpg-pubring.XXXXXXXXXX`"

trap "rm --force $PUBRING $BATCHFILE; shred --remove $SECRING" EXIT

# Create batch file for GPG
cat >"$BATCHFILE" <<EOF
Key-Type: $KEYTYPE
Key-Length: $KEYLENGTH
#Key-Usage: encrypt,sign,auth
Name-Real: $KEYNAME
$KEYCOMMENTLINE
$KEYEMAILLINE
Expire-Date: $KEYEXPIRE
%pubring $PUBRING
%secring $SECRING
%commit
EOF

umask 027
gpg --no-random-seed-file --quiet --batch --no-tty \
    --no-default-keyring --batch --secret-keyring "$SECRING" \
    --keyring "$PUBRING" --gen-key "$BATCHFILE"
rm --force "$BATCHFILE"

if cp --backup=numbered --force "$SECKEYFILE" "$SECKEYFILE" \
    2>/dev/null; then
    shred --remove "$SECKEYFILE"
fi
if cp --backup=numbered --force "$PUBKEYFILE" "$PUBKEYFILE" \
    2>/dev/null; then
    rm --force "$PUBKEYFILE"
fi

FILECOMMENT="Mandos client key for $KEYNAME"
if [ "$KEYCOMMENT" != "$KEYCOMMENT_ORIG" ]; then
    FILECOMMENT="$FILECOMMENT ($KEYCOMMENT)"
fi

if [ -n "$KEYEMAIL" ]; then
    FILECOMMENT="$FILECOMMENT <$KEYEMAIL>"
fi

gpg --no-random-seed-file --quiet --batch --no-tty --armor \
    --no-default-keyring --secret-keyring "$SECRING" \
    --keyring "$PUBRING" --export-options export-minimal \
    --comment "$FILECOMMENT" --output "$SECKEYFILE" \
    --export-secret-keys
gpg --no-random-seed-file --quiet --batch --no-tty --armor \
    --no-default-keyring --secret-keyring "$SECRING" \
    --keyring "$PUBRING" --export-options export-minimal \
    --comment "$FILECOMMENT" --output "$PUBKEYFILE" \
    --export