3 # monkeysphere: MonkeySphere client tool
5 # The monkeysphere scripts are written by:
6 # Jameson Rollins <jrollins@fifthhorseman.net>
8 # They are Copyright 2008, and are all released under the GPL, version 3
11 ########################################################################
14 SHARE=${MONKEYSPHERE_SHARE:-"/usr/share/monkeysphere"}
16 . "${SHARE}/common" || exit 1
18 # date in UTF format if needed
19 DATE=$(date -u '+%FT%T')
21 # unset some environment variables that could screw things up
27 # set the file creation mask to be only owner rw
30 ########################################################################
32 ########################################################################
36 usage: $PGRM <subcommand> [options] [args]
37 MonkeySphere client tool.
40 update-known_hosts (k) [HOST]... update known_hosts file
41 update-authorized_keys (a) update authorized_keys file
42 gen-subkey (g) KEYID generate an 'a' capable subkey
43 -l|--length BITS key length in bits (2048)
44 -e|--expire EXPIRE date to expire
50 # generate a subkey with the 'a' usage flags set
51 # FIXME: this needs some tweaking to clean it up
59 # set default key parameter values
64 TEMP=$(getopt -o l:e: -l length:,expire: -n "$PGRM" -- "$@")
70 # Note the quotes around `$TEMP': they are essential!
94 gpgOut=$(gpg --quiet --fixed-list-mode --list-keys --with-colons \
95 "$keyID" 2> /dev/null)
97 # fail if there only "tru" lines are output from gpg, which
98 # indicates the key was not found.
99 if [ -z "$(echo "$gpgOut" | grep -v '^tru:')" ] ; then
100 failure "Key ID '$keyID' not found."
103 # fail if multiple pub lines are returned, which means the id given
105 if [ $(echo "$gpgOut" | grep '^pub:' | wc -l) -gt '1' ] ; then
106 failure "Key ID '$keyID' is not unique."
109 # prompt if an authentication subkey already exists
110 if echo "$gpgOut" | egrep "^(pub|sub):" | cut -d: -f 12 | grep -q a ; then
111 echo "An authentication subkey already exists for key '$keyID'."
112 read -p "Are you sure you would like to generate another one? (y/N) " OK; OK=${OK:N}
113 if [ "${OK/y/Y}" != 'Y' ] ; then
118 # set subkey defaults
119 # prompt about key expiration if not specified
120 if [ -z "$keyExpire" ] ; then
122 Please specify how long the key should be valid.
123 0 = key does not expire
124 <n> = key expires in n days
125 <n>w = key expires in n weeks
126 <n>m = key expires in n months
127 <n>y = key expires in n years
129 while [ -z "$keyExpire" ] ; do
130 read -p "Key is valid for? (0) " keyExpire
131 if ! test_gpg_expire ${keyExpire:=0} ; then
136 elif ! test_gpg_expire "$keyExpire" ; then
137 failure "invalid key expiration value '$keyExpire'."
140 # generate the list of commands that will be passed to edit-key
141 editCommands=$(cat <<EOF
154 log "generating subkey..."
155 echo "$editCommands" | gpg --expert --command-fd 0 --edit-key "$keyID"
159 ########################################################################
161 ########################################################################
163 # unset variables that should be defined only in config file
165 unset CHECK_KEYSERVER
167 unset HASH_KNOWN_HOSTS
168 unset AUTHORIZED_KEYS
171 [ -r "${ETC}/monkeysphere.conf" ] && . "${ETC}/monkeysphere.conf"
173 # set monkeysphere home directory
174 MONKEYSPHERE_HOME=${MONKEYSPHERE_HOME:="${HOME}/.config/monkeysphere"}
175 mkdir -p -m 0700 "$MONKEYSPHERE_HOME"
178 [ -e ${MONKEYSPHERE_CONFIG:="${MONKEYSPHERE_HOME}/monkeysphere.conf"} ] && . "$MONKEYSPHERE_CONFIG"
180 # set empty config variables with ones from the environment, or from
181 # config file, or with defaults
182 GNUPGHOME=${MONKEYSPHERE_GNUPGHOME:=${GNUPGHOME:="${HOME}/.gnupg"}}
183 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="subkeys.pgp.net"}}
184 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=${CHECK_KEYSERVER:="true"}}
185 KNOWN_HOSTS=${MONKEYSPHERE_KNOWN_HOSTS:=${KNOWN_HOSTS:="${HOME}/.ssh/known_hosts"}}
186 HASH_KNOWN_HOSTS=${MONKEYSPHERE_HASH_KNOWN_HOSTS:=${HASH_KNOWN_HOSTS:="true"}}
187 AUTHORIZED_KEYS=${MONKEYSPHERE_AUTHORIZED_KEYS:=${AUTHORIZED_KEYS:="${HOME}/.ssh/authorized_keys"}}
189 # other variables not in config file
190 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:="${MONKEYSPHERE_HOME}/authorized_user_ids"}
191 REQUIRED_HOST_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_HOST_KEY_CAPABILITY:="a"}
192 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
194 # export GNUPGHOME and make sure gpg home exists with proper
197 mkdir -p -m 0700 "$GNUPGHOME"
201 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
205 'update-known_hosts'|'update-known-hosts'|'k')
208 if ! check_key_file_permissions "$USER" "$KNOWN_HOSTS" ; then
209 failure "Improper permissions on known_hosts file."
212 # if hosts are specified on the command line, process just
215 update_known_hosts "$@"
218 # otherwise, if no hosts are specified, process every host
219 # in the user's known_hosts file
221 if [ ! -s "$KNOWN_HOSTS" ] ; then
222 failure "known_hosts file '$KNOWN_HOSTS' is empty or does not exist."
230 'update-authorized_keys'|'update-authorized-keys'|'a')
231 MODE='authorized_keys'
233 # fail if the authorized_user_ids file is empty
234 if [ ! -s "$AUTHORIZED_USER_IDS" ] ; then
235 failure "authorized_user_ids file '$AUTHORIZED_USER_IDS' is empty or does not exist."
238 if ! check_key_file_permissions "$USER" "$AUTHORIZED_USER_IDS" ; then
239 failure "Improper permissions on authorized_user_ids file."
242 # process authorized_user_ids file
243 process_authorized_user_ids "$AUTHORIZED_USER_IDS"
249 if [ -z "$keyID" ] ; then
250 failure "You must specify the key ID of your primary key."
260 failure "Unknown command: '$COMMAND'
261 Type '$PGRM help' for usage."