2 # This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
4 # Monkeysphere authentication setup subcommand
6 # The monkeysphere scripts are written by:
7 # Jameson Rollins <jrollins@finestructure.net>
8 # Jamie McClelland <jm@mayfirst.org>
9 # Daniel Kahn Gillmor <dkg@fifthhorseman.net>
11 # They are Copyright 2009, and are all released under the GPL,
15 # make the core and the sphere:
16 mkdir -p "${SYSDATADIR}"/authentication
17 mkdir -p "${GNUPGHOME_SPHERE}"
18 mkdir -p "${GNUPGHOME_CORE}"
20 # deliberately replace the config files via truncation
21 # FIXME: should we be dumping to tmp files and then moving atomically?
22 cat >"${GNUPGHOME_CORE}"/gpg.conf <<EOF
23 # Monkeysphere trust core GnuPG configuration
24 # This file is maintained by the Monkeysphere software.
25 # Edits will be overwritten.
27 list-options show-uid-validity
30 cat >"${GNUPGHOME_SPHERE}"/gpg.conf <<EOF
31 # Monkeysphere trust sphere GnuPG configuration
32 # This file is maintained by the Monkeysphere software.
33 # Edits will be overwritten.
35 primary-keyring ${GNUPGHOME_SPHERE}/pubring.gpg
36 keyring ${GNUPGHOME_CORE}/pubring.gpg
38 list-options show-uid-validity
41 # fingerprint of core key. this should be empty on unconfigured systems.
42 local CORE_FPR=$(gpg_core --with-colons --fixed-list-mode --fingerprint --list-secret-key | grep ^fpr: | cut -f10 -d: )
44 if [ -z "$CORE_FPR" ] ; then
45 log info "Setting up Monkeysphere authentication trust core"
47 local CORE_UID=$(printf "Monkeysphere authentication trust core UID (random string: %s)" $(head -c21 </dev/urandom | base64))
49 local TMPLOC=$(mktemp -d ${MATMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
50 ssh-keygen -q -b 2048 -t rsa -N'' "${TMPLOC}/authkey" || failure "Could not generate new key for Monkeysphere authentication trust core"
52 # FIXME: pem2openpgp currently sets the A flag and a short
53 # expiration date. We should set the C flag and no expiration
55 < "${TMPLOC}/authkey" pem2openpgp "$CORE_UID" | gpg --import || failure "Could not import new key for Monkeysphere authentication trust core"
57 CORE_FPR=$(gpg_core --with-colons --fixed-list-mode --fingerprint --list-secret-key | grep ^fpr: | cut -f10 -d: )
58 if [ -z "$CORE_FPR" ] ; then
59 failure "Failed to create Monkeysphere authentication trust core!"
63 log verbose "This system has already set up the Monkeysphere authentication trust core"
67 # ensure that the authentication sphere checker has absolute ownertrust on the expected key.
68 printf "%s:6:\n" "$CORE_FPR" | gpg_sphere --import-ownertrust
70 if ORIG_TRUST=$(gpg_sphere --export-ownertrust | grep '^[^#]') ; then
71 if [ "${CORE_FPR}:6:" != "$ORIG_TRUST" ] ; then
72 failure "Monkeysphere authentication trust sphere should explicitly trust the core. It does not have proper ownertrust settings."
75 failure "Could not get monkeysphere-authentication trust guidelines."
78 # ensure that we're using the extended trust model (1), and that
79 # our preferences are reasonable (i.e. 3 marginal OR 1 fully
80 # trusted certifications are sufficient to grant full validity.
81 if [ "1:3:1" != $(gpg_sphere --with-colons --fixed-list-mode --list-keys | head -n1 | grep ^tru: cut -f3,6,7 -d:) ] ; then
82 failure "monkeysphere-preference does not have the expected trust model settings"