# or later.
########################################################################
+set -e
+
PGRM=$(basename $0)
SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
# unset some environment variables that could screw things up
unset GREP_OPTIONS
-# default return code
-RETURN=0
-
# set the file creation mask to be only owner rw
umask 077
subcommands:
update-known_hosts (k) [HOST]... update known_hosts file
update-authorized_keys (a) update authorized_keys file
- import-subkey (i) import existing ssh key as gpg subkey
- --keyfile (-f) FILE key file to import
- --expire (-e) EXPIRE date to expire
gen-subkey (g) [KEYID] generate an authentication subkey
--length (-l) BITS key length in bits (2048)
- --expire (-e) EXPIRE date to expire
ssh-proxycommand monkeysphere ssh ProxyCommand
subkey-to-ssh-agent (s) store authentication subkey in ssh-agent
version (v) show version number
EOF
}
+# user gpg command to define common options
+gpg_user() {
+ gpg --no-greeting --quiet --no-tty "$@"
+}
+
+# take a secret key ID and check that only zero or one ID is provided,
+# and that it corresponds to only a single secret key ID
+check_gpg_sec_key_id() {
+ local gpgSecOut
+
+ case "$#" in
+ 0)
+ gpgSecOut=$(gpg_user --fixed-list-mode --list-secret-keys --with-colons 2>/dev/null | egrep '^sec:')
+ ;;
+ 1)
+ gpgSecOut=$(gpg_user --fixed-list-mode --list-secret-keys --with-colons "$keyID" | egrep '^sec:') || failure
+ ;;
+ *)
+ failure "You must specify only a single primary key ID."
+ ;;
+ esac
+
+ # check that only a single secret key was found
+ case $(echo "$gpgSecOut" | grep -c '^sec:') in
+ 0)
+ failure "No secret keys found. Create an OpenPGP key with the following command:
+ gpg --gen-key"
+ ;;
+ 1)
+ echo "$gpgSecOut" | cut -d: -f5
+ ;;
+ *)
+ echo "Multiple primary secret keys found:"
+ echo "$gpgSecOut" | cut -d: -f5
+ echo "Please specify which primary key to use."
+ failure
+ ;;
+ esac
+}
+
+# check that a valid authentication subkey does not already exist
+check_gpg_authentication_subkey() {
+ local keyID
+ local IFS
+ local line
+ local type
+ local validity
+ local usage
+
+ keyID="$1"
+
+ # check that a valid authentication key does not already exist
+ IFS=$'\n'
+ for line in $(gpg_user --fixed-list-mode --list-keys --with-colons "$keyID") ; do
+ type=$(echo "$line" | cut -d: -f1)
+ validity=$(echo "$line" | cut -d: -f2)
+ usage=$(echo "$line" | cut -d: -f12)
+
+ # look at keys only
+ if [ "$type" != 'pub' -a "$type" != 'sub' ] ; then
+ continue
+ fi
+ # check for authentication capability
+ if ! check_capability "$usage" 'a' ; then
+ continue
+ fi
+ # if authentication key is valid, prompt to continue
+ if [ "$validity" = 'u' ] ; then
+ echo "A valid authentication key already exists for primary key '$keyID'." 1>&2
+ if [ "$PROMPT" = "true" ] ; then
+ read -p "Are you sure you would like to generate another one? (y/N) " OK; OK=${OK:N}
+ if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "aborting."
+ fi
+ break
+ else
+ failure "aborting."
+ fi
+ fi
+ done
+}
+
########################################################################
# MAIN
########################################################################
-# unset variables that should be defined only in config file
-unset KEYSERVER
+# set unset default variables
+GNUPGHOME=${GNUPGHOME:="${HOME}/.gnupg"}
+KNOWN_HOSTS="${HOME}/.ssh/known_hosts"
+HASH_KNOWN_HOSTS="true"
+AUTHORIZED_KEYS="${HOME}/.ssh/authorized_keys"
+
+# unset the check keyserver variable, since that needs to have
+# different defaults for the different functions
unset CHECK_KEYSERVER
-unset KNOWN_HOSTS
-unset HASH_KNOWN_HOSTS
-unset AUTHORIZED_KEYS
# load global config
-[ -r "${SYSCONFIGDIR}/monkeysphere.conf" ] && . "${SYSCONFIGDIR}/monkeysphere.conf"
+[ -r "${SYSCONFIGDIR}/monkeysphere.conf" ] \
+ && . "${SYSCONFIGDIR}/monkeysphere.conf"
# set monkeysphere home directory
MONKEYSPHERE_HOME=${MONKEYSPHERE_HOME:="${HOME}/.monkeysphere"}
mkdir -p -m 0700 "$MONKEYSPHERE_HOME"
# load local config
-[ -e ${MONKEYSPHERE_CONFIG:="${MONKEYSPHERE_HOME}/monkeysphere.conf"} ] && . "$MONKEYSPHERE_CONFIG"
-
-# set empty config variables with ones from the environment, or from
-# config file, or with defaults
-LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
-GNUPGHOME=${MONKEYSPHERE_GNUPGHOME:=${GNUPGHOME:="${HOME}/.gnupg"}}
-KEYSERVER=${MONKEYSPHERE_KEYSERVER:="$KEYSERVER"}
-# if keyserver not specified in env or monkeysphere.conf,
-# look in gpg.conf
+[ -e ${MONKEYSPHERE_CONFIG:="${MONKEYSPHERE_HOME}/monkeysphere.conf"} ] \
+ && . "$MONKEYSPHERE_CONFIG"
+
+# set empty config variables with ones from the environment
+GNUPGHOME=${MONKEYSPHERE_GNUPGHOME:=$GNUPGHOME}
+LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=$LOG_LEVEL}
+KEYSERVER=${MONKEYSPHERE_KEYSERVER:=$KEYSERVER}
+# if keyserver not specified in env or conf, then look in gpg.conf
if [ -z "$KEYSERVER" ] ; then
if [ -f "${GNUPGHOME}/gpg.conf" ] ; then
KEYSERVER=$(grep -e "^[[:space:]]*keyserver " "${GNUPGHOME}/gpg.conf" | tail -1 | awk '{ print $2 }')
fi
fi
-# if it's still not specified, use the default
-KEYSERVER=${KEYSERVER:="subkeys.pgp.net"}
-CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=${CHECK_KEYSERVER:="true"}}
-KNOWN_HOSTS=${MONKEYSPHERE_KNOWN_HOSTS:=${KNOWN_HOSTS:="${HOME}/.ssh/known_hosts"}}
-HASH_KNOWN_HOSTS=${MONKEYSPHERE_HASH_KNOWN_HOSTS:=${HASH_KNOWN_HOSTS:="true"}}
-AUTHORIZED_KEYS=${MONKEYSPHERE_AUTHORIZED_KEYS:=${AUTHORIZED_KEYS:="${HOME}/.ssh/authorized_keys"}}
+PROMPT=${MONKEYSPHERE_PROMPT:=$PROMPT}
+KNOWN_HOSTS=${MONKEYSPHERE_KNOWN_HOSTS:=$KNOWN_HOSTS}
+HASH_KNOWN_HOSTS=${MONKEYSPHERE_HASH_KNOWN_HOSTS:=$HASH_KNOWN_HOSTS}
+AUTHORIZED_KEYS=${MONKEYSPHERE_AUTHORIZED_KEYS:=$AUTHORIZED_KEYS}
# other variables not in config file
AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:="${MONKEYSPHERE_HOME}/authorized_user_ids"}
case $COMMAND in
'update-known_hosts'|'update-known-hosts'|'k')
- MODE='known_hosts'
-
- # touch the known_hosts file so that the file permission check
- # below won't fail upon not finding the file
- (umask 0022 && touch "$KNOWN_HOSTS")
+ # whether or not to check keyservers
+ CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=${CHECK_KEYSERVER:="true"}}
- # check permissions on the known_hosts file path
- check_key_file_permissions "$USER" "$KNOWN_HOSTS" || failure
-
- # if hosts are specified on the command line, process just
- # those hosts
+ # if hosts are specified on the command line, process just
+ # those hosts
if [ "$1" ] ; then
update_known_hosts "$@"
- RETURN="$?"
- # otherwise, if no hosts are specified, process every host
- # in the user's known_hosts file
+ # otherwise, if no hosts are specified, process every host
+ # in the user's known_hosts file
else
- # exit if the known_hosts file does not exist
- if [ ! -e "$KNOWN_HOSTS" ] ; then
- log error "known_hosts file '$KNOWN_HOSTS' does not exist."
- exit
- fi
-
process_known_hosts
- RETURN="$?"
fi
;;
'update-authorized_keys'|'update-authorized-keys'|'a')
- MODE='authorized_keys'
-
- # check permissions on the authorized_user_ids file path
- check_key_file_permissions "$USER" "$AUTHORIZED_USER_IDS" || failure
-
- # check permissions on the authorized_keys file path
- check_key_file_permissions "$USER" "$AUTHORIZED_KEYS" || failure
-
- # exit if the authorized_user_ids file is empty
- if [ ! -e "$AUTHORIZED_USER_IDS" ] ; then
- log error "authorized_user_ids file '$AUTHORIZED_USER_IDS' does not exist."
- exit
- fi
+ # whether or not to check keyservers
+ CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:=${CHECK_KEYSERVER:="true"}}
# process authorized_user_ids file
process_authorized_user_ids "$AUTHORIZED_USER_IDS"
- RETURN="$?"
;;
'import-subkey'|'i')
;;
'version'|'v')
- echo "$VERSION"
+ version
;;
'--help'|'help'|'-h'|'h'|'?')
Type '$PGRM help' for usage."
;;
esac
-
-exit "$RETURN"
projects / monkeysphere.git / blobdiff