########################################################################
PGRM=$(basename $0)
-SHAREDIR=${SHAREDIR:-"/usr/share/monkeysphere"}
-export SHAREDIR
-. "${SHAREDIR}/common" || exit 1
-
-GLOBAL_CONFIG=${GLOBAL_CONFIG:-"${ETC}/monkeysphere.conf"}
-[ -r "$GLOBAL_CONFIG" ] && . "$GLOBAL_CONFIG"
+SHARE=${MONKEYSPHERE_SHARE:-"/usr/share/monkeysphere"}
+export SHARE
+. "${SHARE}/common" || exit 1
# date in UTF format if needed
DATE=$(date -u '+%FT%T')
# unset some environment variables that could screw things up
-GREP_OPTIONS=
+unset GREP_OPTIONS
# default return code
-ERR=0
+RETURN=0
+
+# set the file creation mask to be only owner rw
+umask 077
########################################################################
# FUNCTIONS
########################################################################
usage() {
-cat <<EOF
-usage: $PGRM <subcommand> [args]
+ cat <<EOF
+usage: $PGRM <subcommand> [options] [args]
MonkeySphere client tool.
subcommands:
update-known_hosts (k) [HOST]... update known_hosts file
update-authorized_keys (a) update authorized_keys file
gen-subkey (g) KEYID generate an 'a' capable subkey
+ -l|--length BITS key length in bits (2048)
+ -e|--expire EXPIRE date to expire
help (h,?) this help
EOF
# generate a subkey with the 'a' usage flags set
# FIXME: this needs some tweaking to clean it up
gen_subkey(){
+ local keyLength
+ local keyExpire
local keyID
local gpgOut
local userID
- keyID="$1"
+ # set default key parameter values
+ keyLength=
+ keyExpire=
+
+ # get options
+ TEMP=$(getopt -o l:e: -l length:,expire: -n "$PGRM" -- "$@")
- gpgOut=$(gpg --quiet --fixed-list-mode --list-keys --with-colons \
- "$keyID" 2> /dev/null)
+ if [ $? != 0 ] ; then
+ exit 1
+ fi
- # fail if there only "tru" lines are output from gpg, which
- # indicates the key was not found.
- if [ -z "$(echo "$gpgOut" | grep -v '^tru:')" ] ; then
- failure "Key ID '$keyID' not found."
+ # Note the quotes around `$TEMP': they are essential!
+ eval set -- "$TEMP"
+
+ while true ; do
+ case "$1" in
+ -l|--length)
+ keyLength="$2"
+ shift 2
+ ;;
+ -e|--expire)
+ keyExpire="$2"
+ shift 2
+ ;;
+ --)
+ shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+ done
+
+ if [ -z "$1" ] ; then
+ # find all secret keys
+ keyID=$(gpg --with-colons --list-secret-keys | grep ^sec | cut -f5 -d:)
+ # if multiple sec keys exist, fail
+ if (( $(echo "$keyID" | wc -l) > 1 )) ; then
+ echo "Multiple secret keys found:"
+ echo "$keyID"
+ failure "Please specify which primary key to use."
+ fi
+ else
+ keyID="$1"
+ fi
+ if [ -z "$keyID" ] ; then
+ failure "You have no secret key available. You should create an OpenPGP
+key before joining the monkeysphere. You can do this with:
+ gpg --gen-key"
fi
- # fail if multiple pub lines are returned, which means the id given
- # is not unique
- if [ $(echo "$gpgOut" | grep '^pub:' | wc -l) -gt '1' ] ; then
+ # get key output, and fail if not found
+ gpgOut=$(gpg --quiet --fixed-list-mode --list-secret-keys --with-colons \
+ "$keyID") || failure
+
+ # fail if multiple sec lines are returned, which means the id
+ # given is not unique
+ if [ $(echo "$gpgOut" | grep '^sec:' | wc -l) -gt '1' ] ; then
failure "Key ID '$keyID' is not unique."
fi
# prompt if an authentication subkey already exists
- if echo "$gpgOut" | egrep "^(pub|sub):" | cut -d: -f 12 | grep -q a ; then
+ if echo "$gpgOut" | egrep "^(sec|ssb):" | cut -d: -f 12 | grep -q a ; then
echo "An authentication subkey already exists for key '$keyID'."
read -p "Are you sure you would like to generate another one? (y/N) " OK; OK=${OK:N}
if [ "${OK/y/Y}" != 'Y' ] ; then
fi
# set subkey defaults
- SUBKEY_TYPE=${SUBKEY_TYPE:-"RSA"}
- SUBKEY_LENGTH=${SUBKEY_LENGTH:-}
- SUBKEY_USAGE=${SUBKEY_USAGE:-"auth"}
- SUBKEY_EXPIRE=${SUBKEY_EXPIRE:-"0"}
- cat <<EOF
+ # prompt about key expiration if not specified
+ if [ -z "$keyExpire" ] ; then
+ cat <<EOF
Please specify how long the key should be valid.
0 = key does not expire
<n> = key expires in n days
<n>m = key expires in n months
<n>y = key expires in n years
EOF
- read -p "Key is valid for? ($SUBKEY_EXPIRE) " SUBKEY_EXPIRE; SUBKEY_EXPIRE=${SUBKEY_EXPIRE:-"0"}
+ while [ -z "$keyExpire" ] ; do
+ read -p "Key is valid for? (0) " keyExpire
+ if ! test_gpg_expire ${keyExpire:=0} ; then
+ echo "invalid value"
+ unset keyExpire
+ fi
+ done
+ elif ! test_gpg_expire "$keyExpire" ; then
+ failure "invalid key expiration value '$keyExpire'."
+ fi
# generate the list of commands that will be passed to edit-key
editCommands=$(cat <<EOF
E
A
Q
-$SUBKEY_LENGTH
-$SUBKEY_EXPIRE
+$keyLength
+$keyExpire
save
EOF
)
# MAIN
########################################################################
-COMMAND="$1"
-[ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
-shift
-
-# set ms home directory
-MS_HOME=${MS_HOME:-"${HOME}/.config/monkeysphere"}
-
-# load configuration file
-MS_CONF=${MS_CONF:-"${MS_HOME}/monkeysphere.conf"}
-[ -e "$MS_CONF" ] && . "$MS_CONF"
-
-# set empty config variable with defaults
-GNUPGHOME=${GNUPGHOME:-"${HOME}/.gnupg"}
-KEYSERVER=${KEYSERVER:-"subkeys.pgp.net"}
-CHECK_KEYSERVER=${CHECK_KEYSERVER:="true"}
-KNOWN_HOSTS=${KNOWN_HOSTS:-"${HOME}/.ssh/known_hosts"}
-HASH_KNOWN_HOSTS=${HASH_KNOWN_HOSTS:-"true"}
-AUTHORIZED_KEYS=${AUTHORIZED_KEYS:-"${HOME}/.ssh/authorized_keys"}
-
-# other variables
-AUTHORIZED_USER_IDS=${AUTHORIZED_USER_IDS:-"${MS_HOME}/authorized_user_ids"}
-REQUIRED_HOST_KEY_CAPABILITY=${REQUIRED_HOST_KEY_CAPABILITY:-"a"}
-REQUIRED_USER_KEY_CAPABILITY=${REQUIRED_USER_KEY_CAPABILITY:-"a"}
-
+# unset variables that should be defined only in config file
+unset KEYSERVER
+unset CHECK_KEYSERVER
+unset KNOWN_HOSTS
+unset HASH_KNOWN_HOSTS
+unset AUTHORIZED_KEYS
+
+# load global config
+[ -r "${ETC}/monkeysphere.conf" ] && . "${ETC}/monkeysphere.conf"
+
+# set monkeysphere home directory
+MONKEYSPHERE_HOME=${MONKEYSPHERE_HOME:="${HOME}/.config/monkeysphere"}
+mkdir -p -m 0700 "$MONKEYSPHERE_HOME"
+
+# load local config
+[ -e ${MONKEYSPHERE_CONFIG:="${MONKEYSPHERE_HOME}/monkeysphere.conf"} ] && . "$MONKEYSPHERE_CONFIG"
+
+# set empty config variables with ones from the environment, or from
+# config file, or with defaults
+GNUPGHOME=${MONKEYSPHERE_GNUPGHOME:=${GNUPGHOME:="${HOME}/.gnupg"}}
+KEYSERVER=${MONKEYSPHERE_KEYSERVER:="$KEYSERVER"}
+# if keyserver not specified in env or monkeysphere.conf,
+# 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"}}
+
+# other variables not in config file
+AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:="${MONKEYSPHERE_HOME}/authorized_user_ids"}
+REQUIRED_HOST_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_HOST_KEY_CAPABILITY:="a"}
+REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
+
+# export GNUPGHOME and make sure gpg home exists with proper
+# permissions
export GNUPGHOME
-
-# make sure gpg home exists with proper permissions
mkdir -p -m 0700 "$GNUPGHOME"
-# make sure the user monkeysphere home directory exists
-mkdir -p -m 0700 "$MS_HOME"
-touch "$AUTHORIZED_USER_IDS"
+# get subcommand
+COMMAND="$1"
+[ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
+shift
case $COMMAND in
'update-known_hosts'|'update-known-hosts'|'k')
MODE='known_hosts'
- # touch the known_hosts file to make sure it exists
- # ssh-keygen complains if it doesn't exist
- touch "$KNOWN_HOSTS"
+ # check permissions on the known_hosts file path
+ if ! check_key_file_permissions "$USER" "$KNOWN_HOSTS" ; then
+ failure "Improper permissions on known_hosts file path."
+ fi
# if hosts are specified on the command line, process just
# those hosts
if [ "$1" ] ; then
update_known_hosts "$@"
- ERR="$?"
+ RETURN="$?"
# otherwise, if no hosts are specified, process every host
# in the user's known_hosts file
else
- if [ ! -s "$KNOWN_HOSTS" ] ; then
- failure "known_hosts file '$KNOWN_HOSTS' is empty."
+ # exit if the known_hosts file does not exist
+ if [ ! -e "$KNOWN_HOSTS" ] ; then
+ log "known_hosts file '$KNOWN_HOSTS' does not exist."
+ exit
fi
process_known_hosts
- ERR="$?"
+ RETURN="$?"
fi
;;
'update-authorized_keys'|'update-authorized-keys'|'a')
MODE='authorized_keys'
- # fail if the authorized_user_ids file is empty
- if [ ! -s "$AUTHORIZED_USER_IDS" ] ; then
- failure "$AUTHORIZED_USER_IDS is empty."
+ # check permissions on the authorized_user_ids file path
+ if ! check_key_file_permissions "$USER" "$AUTHORIZED_USER_IDS" ; then
+ failure "Improper permissions on authorized_user_ids file path."
+ fi
+
+ # check permissions on the authorized_keys file path
+ if ! check_key_file_permissions "$USER" "$AUTHORIZED_KEYS" ; then
+ failure "Improper permissions on authorized_keys file path."
+ fi
+
+ # exit if the authorized_user_ids file is empty
+ if [ ! -e "$AUTHORIZED_USER_IDS" ] ; then
+ log "authorized_user_ids file '$AUTHORIZED_USER_IDS' does not exist."
+ exit
fi
# process authorized_user_ids file
process_authorized_user_ids "$AUTHORIZED_USER_IDS"
- ERR="$?"
+ RETURN="$?"
;;
'gen-subkey'|'g')
- keyID="$1"
- if [ -z "$keyID" ] ; then
- failure "You must specify the key ID of your primary key."
- fi
- gen_subkey "$keyID"
+ gen_subkey "$@"
;;
'help'|'h'|'?')
;;
esac
-exit "$ERR"
+exit "$RETURN"
projects / monkeysphere.git / blobdiff