subcommands:
update-users (s) [USER]... update users authorized_keys files
- gen-key (g) generate gpg key for the server
+ gen-key (g) [HOSTNAME] generate gpg key for the server
+ show-fingerprint (f) show server's host key fingerprint
publish-key (p) publish server key to keyserver
trust-keys (t) KEYID... mark keyids as trusted
- update-user-userids (u) USER UID... add/update user IDs for a user
- remove-user-userids (r) USER UID... remove user IDs for a user
help (h,?) this help
EOF
# generate server gpg key
gen_key() {
+ local hostName
+
+ hostName=${1:-$(hostname --fqdn)}
+
# set key defaults
KEY_TYPE=${KEY_TYPE:-"RSA"}
KEY_LENGTH=${KEY_LENGTH:-"2048"}
- KEY_USAGE=${KEY_USAGE:-"auth,encrypt"}
- SERVICE=${SERVICE:-"ssh"}
- HOSTNAME_FQDN=${HOSTNAME_FQDN:-$(hostname -f)}
+ KEY_USAGE=${KEY_USAGE:-"auth"}
+ cat <<EOF
+Please specify how long the key should be valid.
+ 0 = key does not expire
+ <n> = key expires in n days
+ <n>w = key expires in n weeks
+ <n>m = key expires in n months
+ <n>y = key expires in n years
+EOF
+ read -p "Key is valid for? ($EXPIRE) " EXPIRE; EXPIRE=${EXPIRE:-"0"}
- USERID=${USERID:-"$SERVICE"://"$HOSTNAME_FQDN"}
+ SERVICE=${SERVICE:-"ssh"}
+ USERID=${USERID:-"$SERVICE"://"$hostName"}
# set key parameters
keyParameters=$(cat <<EOF
Key-Length: $KEY_LENGTH
Key-Usage: $KEY_USAGE
Name-Real: $USERID
+Expire-Date: $EXPIRE
EOF
)
# add the revoker field if requested
+# FIXME: the 1: below assumes that $REVOKER's key is an RSA key. why?
+# FIXME: why is this marked "sensitive"? how will this signature ever
+# be transmitted to the expected revoker?
if [ "$REVOKER" ] ; then
keyParameters="${keyParameters}"$(cat <<EOF
EOF
)
- log "generating server key..."
+ log -n "generating server key... "
echo "$keyParameters" | gpg --batch --gen-key
+ loge "done."
+ fingerprint_server_key
+}
+
+fingerprint_server_key() {
+ gpg --fingerprint --list-secret-keys =ssh://$(hostname --fqdn)
}
########################################################################
# set empty config variable with defaults
GNUPGHOME=${GNUPGHOME:-"${MS_HOME}/gnupg"}
KEYSERVER=${KEYSERVER:-"subkeys.pgp.net"}
+CHECK_KEYSERVER=${CHECK_KEYSERVER:="true"}
REQUIRED_USER_KEY_CAPABILITY=${REQUIRED_USER_KEY_CAPABILITY:-"a"}
+AUTHORIZED_USER_IDS=${AUTHORIZED_USER_IDS:-"%h/.config/monkeysphere/authorized_user_ids"}
USER_CONTROLLED_AUTHORIZED_KEYS=${USER_CONTROLLED_AUTHORIZED_KEYS:-"%h/.ssh/authorized_keys"}
export GNUPGHOME
+# make sure the monkeysphere home directory exists
+mkdir -p "${MS_HOME}/authorized_user_ids"
# make sure gpg home exists with proper permissions
mkdir -p -m 0700 "$GNUPGHOME"
+# make sure the authorized_keys directory exists
+mkdir -p "${CACHE}/authorized_keys"
case $COMMAND in
'update-users'|'update-user'|'s')
if [ "$1" ] ; then
+ # get users from command line
unames="$@"
else
- unames=$(ls -1 "$MS_HOME"/authorized_user_ids)
+ # or just look at all users if none specified
+ unames=$(getent passwd | cut -d: -f1)
fi
+ # loop over users
for uname in $unames ; do
MODE="authorized_keys"
- log "----- user: $uname -----"
+ # check all specified users exist
+ if ! getent passwd "$uname" >/dev/null ; then
+ error "----- unknown user '$uname' -----"
+ continue
+ fi
- # set variables for the user
- AUTHORIZED_USER_IDS="$MS_HOME"/authorized_user_ids/"$uname"
- msAuthorizedKeys="$CACHE"/"$uname"/authorized_keys
- cacheDir="$CACHE"/"$uname"/user_keys
+ # set authorized_user_ids variable,
+ # translate ssh-style path variables
+ authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
- # make sure user's authorized_user_ids file exists
- touch "$AUTHORIZED_USER_IDS"
+ # skip user if authorized_user_ids file does not exist
+ if [ ! -f "$authorizedUserIDs" ] ; then
+ continue
+ fi
+
+ log "----- user: $uname -----"
+
+ # temporary authorized_keys file
+ AUTHORIZED_KEYS=$(mktemp)
# skip if the user's authorized_user_ids file is empty
- if [ ! -s "$AUTHORIZED_USER_IDS" ] ; then
- log "authorized_user_ids file for '$uname' is empty."
+ if [ ! -s "$authorizedUserIDs" ] ; then
+ log "authorized_user_ids file '$authorizedUserIDs' is empty."
continue
fi
- # set user-controlled authorized_keys file path
- if [ "$USER_CONTROLLED_AUTHORIZED_KEYS" ] ; then
- userHome=$(getent passwd "$uname" | cut -d: -f6)
- userAuthorizedKeys=${USER_CONTROLLED_AUTHORIZED_KEYS/\%h/"$userHome"}
+ # process authorized_user_ids file
+ log "processing authorized_user_ids file..."
+ process_authorized_user_ids "$authorizedUserIDs"
+
+ # add user-controlled authorized_keys file path if specified
+ if [ "$USER_CONTROLLED_AUTHORIZED_KEYS" != '-' ] ; then
+ userAuthorizedKeys=$(translate_ssh_variables "$uname" "$USER_CONTROLLED_AUTHORIZED_KEYS")
+ if [ -f "$userAuthorizedKeys" ] ; then
+ log -n "adding user's authorized_keys file... "
+ cat "$userAuthorizedKeys" >> "$AUTHORIZED_KEYS"
+ loge "done."
+ fi
fi
- # update authorized_keys
- update_authorized_keys "$msAuthorizedKeys" "$userAuthorizedKeys" "$cacheDir"
- done
+ # move the temp authorized_keys file into place
+ mv -f "$AUTHORIZED_KEYS" "${CACHE}/authorized_keys/${uname}"
- log "----- done. -----"
+ log "authorized_keys file updated."
+ done
;;
'gen-key'|'g')
- gen_key
+ gen_key "$1"
+ ;;
+
+ 'show-fingerprint'|'f')
+ fingerprint_server_key
;;
'publish-key'|'p')
done
;;
- 'update-user-userids'|'update-user-userid'|'u')
- uname="$1"
- shift
- if [ -z "$uname" ] ; then
- failure "You must specify user."
- fi
- if [ -z "$1" ] ; then
- failure "You must specify at least one user ID."
- fi
-
- # set variables for the user
- AUTHORIZED_USER_IDS="$MS_HOME"/authorized_user_ids/"$uname"
- cacheDir="$CACHE"/"$uname"/user_keys
-
- # make sure user's authorized_user_ids file exists
- touch "$AUTHORIZED_USER_IDS"
-
- # process the user IDs
- for userID ; do
- update_userid "$userID" "$cacheDir"
- done
-
- log "Run the following to update user's authorized_keys file:"
- log "$PGRM update-users $uname"
- ;;
-
- 'remove-user-userids'|'remove-user-userid'|'r')
- uname="$1"
- shift
- if [ -z "$uname" ] ; then
- failure "You must specify user."
- fi
- if [ -z "$1" ] ; then
- failure "You must specify at least one user ID."
- fi
-
- # set variables for the user
- AUTHORIZED_USER_IDS="$MS_HOME"/authorized_user_ids/"$uname"
-
- # make sure user's authorized_user_ids file exists
- touch "$AUTHORIZED_USER_IDS"
-
- # process the user IDs
- for userID ; do
- remove_userid "$userID"
- done
-
- log "Run the following to update user's authorized_keys file:"
- log "$PGRM update-users $uname"
- ;;
-
'help'|'h'|'?')
usage
;;
Type '$PGRM help' for usage."
;;
esac
+
+exit "$ERR"
projects / monkeysphere.git / blobdiff