-#!/bin/bash
+#!/usr/bin/env bash
-# monkeysphere: MonkeySphere client tool
+# monkeysphere: Monkeysphere client tool
#
# The monkeysphere scripts are written by:
# Jameson Rollins <jrollins@fifthhorseman.net>
# Jamie McClelland <jm@mayfirst.org>
# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+# Micah Anderson <micah@riseup.net>
#
-# They are Copyright 2008, and are all released under the GPL, version 3
+# They are Copyright 2008-2009, and are all released under the GPL, version 3
# or later.
########################################################################
PGRM=$(basename $0)
-SHARE=${MONKEYSPHERE_SHARE:-"/usr/share/monkeysphere"}
-export SHARE
-. "${SHARE}/common" || exit 1
+SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
+export SYSSHAREDIR
+. "${SYSSHAREDIR}/common" || exit 1
-# date in UTF format if needed
+# sharedir for host functions
+MSHAREDIR="${SYSSHAREDIR}/m"
+
+# UTC date in ISO 8601 format if needed
DATE=$(date -u '+%FT%T')
# unset some environment variables that could screw things up
usage() {
cat <<EOF >&2
usage: $PGRM <subcommand> [options] [args]
-MonkeySphere client tool.
+Monkeysphere client tool.
subcommands:
update-known_hosts (k) [HOST]... update known_hosts file
update-authorized_keys (a) update authorized_keys file
+ import-subkey (i) import existing ssh key as gpg subkey
+ --keyfile (-f) FILE key file to import
+ --expire (-e) EXPIRE date to expire
gen-subkey (g) [KEYID] generate an authentication subkey
--length (-l) BITS key length in bits (2048)
--expire (-e) EXPIRE date to expire
+ ssh-proxycommand ssh proxycommand
subkey-to-ssh-agent (s) store authentication subkey in ssh-agent
+ version (v) show version number
help (h,?) this help
EOF
}
-# generate a subkey with the 'a' usage flags set
-gen_subkey(){
- local keyLength
- local keyExpire
- local keyID
- local gpgOut
- local userID
-
- # set default key parameter values
- keyLength=
- keyExpire=
-
- # get options
- TEMP=$(getopt -o l:e: -l length:,expire: -n "$PGRM" -- "$@")
-
- if [ $? != 0 ] ; then
- exit 1
- fi
-
- # Note the quotes around `$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: | sort -u)
- # 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
-
- # 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 -c '^sec:') -gt '1' ] ; then
- failure "Key ID '$keyID' is not unique."
- fi
-
- # prompt if an authentication subkey already exists
- if echo "$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 [ "${OK/y/Y}" != 'Y' ] ; then
- failure "aborting."
- fi
- fi
-
- # set subkey defaults
- # prompt about key expiration if not specified
- keyExpire=$(get_gpg_expiration "$keyExpire")
-
- # generate the list of commands that will be passed to edit-key
- editCommands=$(cat <<EOF
-addkey
-7
-S
-E
-A
-Q
-$keyLength
-$keyExpire
-save
-EOF
-)
-
- log verbose "generating subkey..."
- fifoDir=$(mktemp -d)
- (umask 077 && mkfifo "$fifoDir/pass")
- echo "$editCommands" | gpg --passphrase-fd 3 3< "$fifoDir/pass" --expert --command-fd 0 --edit-key "$keyID" &
-
- passphrase_prompt "Please enter your passphrase for $keyID: " "$fifoDir/pass"
-
- rm -rf "$fifoDir"
- wait
- log verbose "done."
-}
-
-function subkey_to_ssh_agent() {
- # try to add all authentication subkeys to the agent:
-
- local sshaddresponse
- local secretkeys
- local authsubkeys
- local workingdir
- local keysuccess
- local subkey
- local publine
- local kname
-
- if ! test_gnu_dummy_s2k_extension ; then
- failure "Your version of GnuTLS does not seem capable of using with gpg's exported subkeys.
-You may want to consider patching or upgrading.
-
-For more details, see:
- http://lists.gnu.org/archive/html/gnutls-devel/2008-08/msg00005.html"
- fi
-
- # if there's no agent running, don't bother:
- if [ -z "$SSH_AUTH_SOCK" ] || ! which ssh-add >/dev/null ; then
- failure "No ssh-agent available."
- fi
-
- # and if it looks like it's running, but we can't actually talk to
- # it, bail out:
- ssh-add -l >/dev/null
- sshaddresponse="$?"
- if [ "$sshaddresponse" = "2" ]; then
- failure "Could not connect to ssh-agent"
- fi
-
- # get list of secret keys (to work around https://bugs.g10code.com/gnupg/issue945):
- secretkeys=$(gpg --list-secret-keys --with-colons --fixed-list-mode --fingerprint | \
- grep '^fpr:' | cut -f10 -d: | awk '{ print "0x" $1 "!" }')
-
- if [ -z "$secretkeys" ]; then
- failure "You have no secret keys in your keyring!
-You might want to run 'gpg --gen-key'."
- fi
-
- authsubkeys=$(gpg --list-secret-keys --with-colons --fixed-list-mode \
- --fingerprint --fingerprint $secretkeys | \
- cut -f1,5,10,12 -d: | grep -A1 '^ssb:[^:]*::[^:]*a[^:]*$' | \
- grep '^fpr::' | cut -f3 -d: | sort -u)
-
- if [ -z "$authsubkeys" ]; then
- failure "no authentication-capable subkeys available.
-You might want to 'monkeysphere gen-subkey'"
- fi
-
- workingdir=$(mktemp -d)
- umask 077
- mkfifo "$workingdir/passphrase"
- keysuccess=1
-
- # FIXME: we're currently allowing any other options to get passed
- # through to ssh-add. should we limit it to known ones? For
- # example: -d or -c and/or -t <lifetime>
-
- for subkey in $authsubkeys; do
- # choose a label by which this key will be known in the agent:
- # we are labelling the key by User ID instead of by
- # fingerprint, but filtering out all / characters to make sure
- # the filename is legit.
-
- primaryuid=$(gpg --with-colons --list-key "0x${subkey}!" | grep '^pub:' | cut -f10 -d: | tr -d /)
-
- #kname="[monkeysphere] $primaryuid"
- kname="$primaryuid"
-
- if [ "$1" = '-d' ]; then
- # we're removing the subkey:
- gpg --export "0x${subkey}!" | openpgp2ssh "$subkey" > "$workingdir/$kname"
- (cd "$workingdir" && ssh-add -d "$kname")
- else
- # we're adding the subkey:
- mkfifo "$workingdir/$kname"
- gpg --quiet --passphrase-fd 3 3<"$workingdir/passphrase" \
- --export-options export-reset-subkey-passwd,export-minimal,no-export-attributes \
- --export-secret-subkeys "0x${subkey}!" | openpgp2ssh "$subkey" > "$workingdir/$kname" &
- (cd "$workingdir" && DISPLAY=nosuchdisplay SSH_ASKPASS=/bin/false ssh-add "$@" "$kname" </dev/null )&
-
- passphrase_prompt "Enter passphrase for key $kname: " "$workingdir/passphrase"
- wait %2
- fi
- keysuccess="$?"
-
- rm -f "$workingdir/$kname"
- done
-
- rm -rf "$workingdir"
-
- # FIXME: sort out the return values: we're just returning the
- # success or failure of the final authentication subkey in this
- # case. What if earlier ones failed?
- exit "$keysuccess"
-}
-
########################################################################
# MAIN
########################################################################
unset AUTHORIZED_KEYS
# load global config
-[ -r "${ETC}/monkeysphere.conf" ] && . "${ETC}/monkeysphere.conf"
+[ -r "${SYSCONFIGDIR}/monkeysphere.conf" ] && . "${SYSCONFIGDIR}/monkeysphere.conf"
# set monkeysphere home directory
-MONKEYSPHERE_HOME=${MONKEYSPHERE_HOME:="${HOME}/.config/monkeysphere"}
+MONKEYSPHERE_HOME=${MONKEYSPHERE_HOME:="${HOME}/.monkeysphere"}
mkdir -p -m 0700 "$MONKEYSPHERE_HOME"
# load local config
'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 "$KNOWN_HOSTS")
+
# check permissions on the known_hosts file path
- if ! check_key_file_permissions "$USER" "$KNOWN_HOSTS" ; then
- failure "Improper permissions on known_hosts file path."
- fi
+ check_key_file_permissions "$USER" "$KNOWN_HOSTS" || failure
# if hosts are specified on the command line, process just
# those hosts
MODE='authorized_keys'
# check permissions on the authorized_user_ids file path
- if ! check_key_file_permissions "$USER" "$AUTHORIZED_USER_IDS" ; then
- failure "Improper permissions on authorized_user_ids file path."
- fi
+ check_key_file_permissions "$USER" "$AUTHORIZED_USER_IDS" || failure
# check permissions on the authorized_keys file path
- if ! check_key_file_permissions "$USER" "$AUTHORIZED_KEYS" ; then
- failure "Improper permissions on authorized_keys file path."
- fi
+ check_key_file_permissions "$USER" "$AUTHORIZED_KEYS" || failure
# exit if the authorized_user_ids file is empty
if [ ! -e "$AUTHORIZED_USER_IDS" ] ; then
RETURN="$?"
;;
+ 'import-subkey'|'i')
+ source "${MSHAREDIR}/import_subkey"
+ import_subkey "$@"
+ ;;
+
'gen-subkey'|'g')
+ source "${MSHAREDIR}/gen_subkey"
gen_subkey "$@"
;;
+ 'ssh-proxycommand'|'p')
+ source "${MSHAREDIR}/ssh_proxycommand"
+ ssh_proxycommand "$@"
+ ;;
+
'subkey-to-ssh-agent'|'s')
+ source "${MSHAREDIR}/subkey_to_ssh_agent"
subkey_to_ssh_agent "$@"
;;
+ 'version'|'v')
+ echo "$VERSION"
+ ;;
+
'--help'|'help'|'-h'|'h'|'?')
usage
;;
projects / monkeysphere.git / blobdiff