3 # monkeysphere-host: Monkeysphere host admin tool
5 # The monkeysphere scripts are written by:
6 # Jameson Rollins <jrollins@finestructure.net>
7 # Jamie McClelland <jm@mayfirst.org>
8 # Daniel Kahn Gillmor <dkg@fifthhorseman.net>
9 # Micah Anderson <micah@riseup.net>
11 # They are Copyright 2008-2009, and are all released under the GPL,
14 ########################################################################
17 # set the pipefail option so pipelines fail on first command failure
22 SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
24 . "${SYSSHAREDIR}/common" || exit 1
26 SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
29 # sharedir for host functions
30 MHSHAREDIR="${SYSSHAREDIR}/mh"
32 # datadir for host functions
33 MHDATADIR="${SYSDATADIR}/host"
35 # temp directory for temp gnupghome directories for add_revoker
36 MHTMPDIR="${MHDATADIR}/tmp"
40 HOST_KEY_FILE="${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
42 # UTC date in ISO 8601 format if needed
43 DATE=$(date -u '+%FT%T')
45 # unset some environment variables that could screw things up
51 ########################################################################
53 ########################################################################
57 usage: $PGRM <subcommand> [options] [args]
58 Monkeysphere host admin tool.
61 show-key (s) output all host key information
62 set-expire (e) EXPIRE set host key expiration
63 add-hostname (n+) NAME[:PORT] add hostname user ID to host key
64 revoke-hostname (n-) NAME[:PORT] revoke hostname user ID
65 add-revoker (o) FINGERPRINT add a revoker to the host key
66 revoke-key (r) revoke host key
67 publish-key (p) publish host key to keyserver
69 import-key (i) [NAME[:PORT]] import existing ssh key to gpg
71 version (v) show version number
74 See ${PGRM}(8) for more info.
78 # function to interact with the gpg keyring
80 GNUPGHOME="$GNUPGHOME_HOST" gpg "$@"
83 # command to list the info about the host key, in colon format
85 gpg_host --list-keys --with-colons --fixed-list-mode \
86 --with-fingerprint --with-fingerprint \
87 "0x${HOST_FINGERPRINT}!"
91 # command for edit key scripts, takes scripts on stdin
93 gpg_host --quiet --command-fd 0 --edit-key \
94 "0x${HOST_FINGERPRINT}!" "$@"
97 # export the host public key to the monkeysphere gpg pub key file
98 create_gpg_pub_file() {
99 log debug "creating openpgp public key file..."
100 gpg_host --export --armor --export-options export-minimal \
101 "0x${HOST_FINGERPRINT}!" > "$HOST_KEY_FILE"
102 log info "GPG host public key file: $HOST_KEY_FILE"
105 # load the host fingerprint into the fingerprint variable, using the
106 # export gpg pub key file
107 # FIXME: this seems much less than ideal, with all this temp keyring
108 # stuff. is there a way we can do this without having to create temp
111 if [ -f "$HOST_KEY_FILE" ] ; then
112 HOST_FINGERPRINT=$( \
113 (FUBAR=$(mktemp -d) && export GNUPGHOME="$FUBAR" \
114 && gpg --quiet --import \
115 && gpg --quiet --list-keys --with-colons --with-fingerprint \
116 && rm -rf "$FUBAR") <"$HOST_KEY_FILE" \
117 | grep '^fpr:' | cut -d: -f10 )
123 # load the host fingerprint into the fingerprint variable, using the
124 # gpg host secret key
125 load_fingerprint_secret() {
126 HOST_FINGERPRINT=$( \
127 gpg_host --quiet --list-secret-key \
128 --with-colons --with-fingerprint \
129 | grep '^fpr:' | cut -d: -f10 )
132 # fail if host key present
134 [ -z "$HOST_FINGERPRINT" ] \
135 || failure "An OpenPGP host key already exists."
138 # fail if host key not present
139 check_host_no_key() {
140 [ "$HOST_FINGERPRINT" ] \
141 || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-host expert import-key' first."
144 # output the index of a user ID on the host key
145 # return 1 if user ID not found
151 # match to only ultimately trusted user IDs
152 tmpuidMatch="u:$(echo $userID | gpg_escape)"
154 # find the index of the requsted user ID
155 # NOTE: this is based on circumstantial evidence that the order of
156 # this output is the appropriate index
157 line=$(gpg_host_list | egrep '^(uid|uat):' | cut -f2,10 -d: | \
158 grep -n -x -F "$tmpuidMatch" 2>/dev/null)
160 if [ "$line" ] ; then
168 # show info about the host key
170 gpg_host --fingerprint --list-key --list-options show-unusable-uids \
171 "0x${HOST_FINGERPRINT}!" 2>/dev/null || true
172 # FIXME: make sure expiration date is shown
174 echo "OpenPGP fingerprint: $HOST_FINGERPRINT"
176 echo -n "ssh fingerprint: "
177 ssh-keygen -l -f /dev/stdin \
178 <<<$(openpgp2ssh <"$HOST_KEY_FILE" 2>/dev/null) \
179 | awk '{ print $1, $2, $4 }'
181 # FIXME: other relevant key parameters?
184 ########################################################################
186 ########################################################################
188 # unset variables that should be defined only in config file
190 unset MONKEYSPHERE_USER
192 # load configuration file
193 [ -e ${MONKEYSPHERE_HOST_CONFIG:="${SYSCONFIGDIR}/monkeysphere-host.conf"} ] && . "$MONKEYSPHERE_HOST_CONFIG"
195 # set empty config variable with ones from the environment, or with
197 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
198 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
199 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
200 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
201 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
204 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
205 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${MHDATADIR}"}
207 # export variables needed in su invocation
211 export MONKEYSPHERE_USER
213 export GNUPGHOME_HOST
215 export HOST_FINGERPRINT=
219 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
223 'show-key'|'show'|'s')
229 'set-expire'|'extend-key'|'e')
232 source "${MHSHAREDIR}/set_expire"
236 'add-hostname'|'add-name'|'n+')
239 source "${MHSHAREDIR}/add_hostname"
243 'revoke-hostname'|'revoke-name'|'n-')
246 source "${MHSHAREDIR}/revoke_hostname"
253 source "${MHSHAREDIR}/add_revoker"
260 source "${MHSHAREDIR}/revoke_key"
264 'publish-key'|'publish'|'p')
267 source "${MHSHAREDIR}/publish_key"
274 source "${MHSHAREDIR}/import_key"
279 source "${MHSHAREDIR}/diagnostics"
287 '--help'|'help'|'-h'|'h'|'?')
292 failure "Unknown command: '$COMMAND'
293 Type '$PGRM help' for usage."