summaryrefslogtreecommitdiff
path: root/cmdline/apt-key
blob: 048105320b4ca313ad817b72d4ef49f0e74d415c (plain)
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
#!/bin/sh

set -e

# We don't use a secret keyring, of course, but gpg panics and
# implodes if there isn't one available

GPG_CMD="gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg"
GPG="$GPG_CMD --keyring /etc/apt/trusted.gpg"


MASTER_KEYRING=""
#MASTER_KEYRING=/usr/share/keyrings/debian-master-keyring.gpg
ARCHIVE_KEYRING=/usr/share/keyrings/debian-archive-keyring.gpg
REMOVED_KEYS=/usr/share/keyrings/debian-archive-removed-keys.gpg

add_keys_with_verify_against_master_keyring() {
    ADD_KEYRING=$1
    MASTER=$2
    
    if [ ! -f "$ADD_KEYRING" ]; then
	echo "ERROR: '$ADD_KEYRING' not found"
	return
    fi 
    if [ ! -f "$MASTER" ]; then
	echo "ERROR: '$MASTER' not found"
	return
    fi

    # when adding new keys, make sure that the archive-master-keyring
    # is honored. so:
    #   all keys that are exported and have the name
    #   "Ubuntu Archive Automatic Signing Key" must have a valid signature
    #   from a key in the ubuntu-master-keyring
    add_keys=`$GPG_CMD --keyring $ADD_KEYRING --with-colons --list-keys | grep ^pub | cut -d: -f5`
    master_keys=`$GPG_CMD --keyring $MASTER --with-colons --list-keys | grep ^pub | cut -d: -f5`
    for add_key in $add_keys; do
	for master_key in $master_keys; do
	    if $GPG --list-sigs --with-colons $add_key | grep ^sig | cut -d: -f5 | grep -q $master_key; then
		$GPG_CMD --quiet --batch --keyring $ARCHIVE_KEYRING --export $add_key | $GPG --import
	    fi
	done
    done
}

update() {
    if [ ! -f $ARCHIVE_KEYRING ]; then
	echo >&2 "ERROR: Can't find the archive-keyring"
	echo >&2 "Is the debian-archive-keyring package installed?"
	exit 1
    fi

    # add new keys, if no MASTER_KEYRING is used, use the traditional
    # way
    if [ -z "$MASTER_KEYRING" ]; then
	$GPG_CMD --quiet --batch --keyring $ARCHIVE_KEYRING --export | $GPG --import
    else
	add_keys_with_verify_against_master_keyring $ARCHIVE_KEYRING $MASTER_KEYRING
    fi

    # remove no-longer supported/used keys
    keys=`$GPG_CMD --keyring $REMOVED_KEYS --with-colons --list-keys | grep ^pub | cut -d: -f5`
    for key in $keys; do
	if $GPG --list-keys --with-colons | grep ^pub | cut -d: -f5 | grep -q $key; then
	    $GPG --quiet --batch --delete-key --yes ${key}
	fi
    done
}


usage() {
    echo "Usage: apt-key [command] [arguments]"
    echo
    echo "Manage apt's list of trusted keys"
    echo
    echo "  apt-key add <file>          - add the key contained in <file> ('-' for stdin)"
    echo "  apt-key del <keyid>         - remove the key <keyid>"
    echo "  apt-key export <keyid>      - output the key <keyid>"
    echo "  apt-key exportall           - output all trusted keys"
    echo "  apt-key update              - update keys using the keyring package"
    echo "  apt-key list                - list keys"
    echo
}

command="$1"
if [ -z "$command" ]; then
    usage
    exit 1
fi
shift

if [ "$command" != "help" ] && ! which gpg >/dev/null 2>&1; then
    echo >&2 "Warning: gnupg does not seem to be installed."
    echo >&2 "Warning: apt-key requires gnupg for most operations."
    echo >&2
fi

case "$command" in
    add)
        $GPG --quiet --batch --import "$1"
        echo "OK"
        ;;
    del|rm|remove)
        $GPG --quiet --batch --delete-key --yes "$1"
        echo "OK"
        ;;
    update)
	update
	;;
    list)
        $GPG --batch --list-keys
        ;;
    finger*)
        $GPG --batch --fingerprint
        ;;
    export)
        $GPG --armor --export "$1"
        ;;
    exportall)
        $GPG --armor --export
        ;;
    adv*)
        echo "Executing: $GPG $*"
        $GPG $*
        ;;
    help)
        usage
        ;;
    *)
        usage
        exit 1
        ;;
esac