--- /dev/null
+# Monkeysphere authentication configuration file.
+
+# This is an sh-style shell configuration file. Variable names should
+# be separated from their assignments by a single '=' and no spaces.
+# Environment variables with the same names as these variables but
+# prefaced by "MONKEYSPHERE_" will take precedence over the values
+# specified here.
+
+# Log level. Can be SILENT, ERROR, INFO, VERBOSE, DEBUG, in
+# increasing order of verbosity.
+#LOG_LEVEL=INFO
+
+# User who controls the monkeysphere 'sphere' keyring.
+#MONKEYSPHERE_USER=monkeysphere
+
+# Path to authorized_user_ids file to process to create
+# authorized_keys file. '%h' will be replaced by the home directory
+# of the user, and '%u' will be replaced by the username of the user.
+# For purely admin-controlled authorized_user_ids, you might put them
+# in /etc/monkeysphere/authorized_user_ids/%u, for instance.
+#AUTHORIZED_USER_IDS="%h/.monkeysphere/authorized_user_ids"
+
+# Path to a user controlled authorized_keys file to be added to the
+# monkeysphere-generated authorized_keys file. '%h' will be replaced
+# by the home directory of the user, and '%u' will by replaced by the
+# username of the user. Setting this variable to 'none' prevents the
+# inclusion of user controlled authorized_keys file.
+# RAW_AUTHORIZED_KEYS="%h/.ssh/authorized_keys"
--- /dev/null
+# Monkeysphere authentication GNUPG home gpg.conf
+
+# Location of the various Monkeysphere keyrings.
+# It is highly recommended that you
+# DO NOT MODIFY
+# these variables.
+primary-keyring /var/lib/monkeysphere/authentication/sphere/pubring.gpg
+keyring /var/lib/monkeysphere/authentication/core/pubring.gpg
+
+# PGP keyserver to use for PGP queries.
+keyserver hkp://pool.sks-keyservers.net
+
+# GPG list options. It is recommended that you have at least
+# "show-uid-validity".
+list-options show-uid-validity
+++ /dev/null
-# Monkeysphere authentication GNUPG home gpg.conf
-
-# Location of the various Monkeysphere keyrings.
-# It is highly recommended that you
-# DO NOT MODIFY
-# these variables.
-primary-keyring /var/lib/monkeysphere/gnupg-authentication/pubring.gpg
-keyring /var/lib/monkeysphere/gnupg-host/pubring.gpg
-
-# PGP keyserver to use for PGP queries.
-keyserver hkp://pool.sks-keyservers.net
-
-# GPG list options. It is recommended that you have at least
-# "show-uid-validity".
-list-options show-uid-validity
+++ /dev/null
-# Monkeysphere host GNUPG home gpg.conf
-
-# GPG list options. It is recommended that you have at least
-# "show-uid-validity".
-list-options show-uid-validity
--- /dev/null
+# Monkeysphere host configuration file.
+
+# This is an sh-style shell configuration file. Variable names should
+# be separated from their assignments by a single '=' and no spaces.
+# Environment variables with the same names as these variables but
+# prefaced by "MONKEYSPHERE_" will take precedence over the values
+# specified here.
+
+# Log level. Can be SILENT, ERROR, INFO, VERBOSE, DEBUG, in
+# increasing order of verbosity.
+#LOG_LEVEL=INFO
--- /dev/null
+# Monkeysphere host GNUPG home gpg.conf
+
+# GPG list options. It is recommended that you have at least
+# "show-uid-validity".
+list-options show-uid-validity
+++ /dev/null
-# Monkeysphere server configuration file.
-
-# This is an sh-style shell configuration file. Variable names should
-# be separated from their assignments by a single '=' and no spaces.
-# Environment variables with the same names as these variables but
-# prefaced by "MONKEYSPHERE_" will take precedence over the values
-# specified here.
-
-# User who controls the monkeysphere authentication keyring.
-#MONKEYSPHERE_USER=monkeysphere
-
-# Log level. Can be SILENT, ERROR, INFO, VERBOSE, DEBUG, in
-# increasing order of verbosity.
-#LOG_LEVEL=INFO
-
-# Path to authorized_user_ids file to process to create
-# authorized_keys file. '%h' will be replaced by the home directory
-# of the user, and '%u' will be replaced by the username of the user.
-# For purely admin-controlled authorized_user_ids, you might put them
-# in /etc/monkeysphere/authorized_user_ids/%u, for instance.
-#AUTHORIZED_USER_IDS="%h/.monkeysphere/authorized_user_ids"
-
-# Path to a user controlled authorized_keys file to be added to the
-# monkeysphere-generated authorized_keys file. '%h' will be replaced
-# by the home directory of the user, and '%u' will by replaced by the
-# username of the user. Setting this variable to 'none' prevents the
-# inclusion of user controlled authorized_keys file.
-# RAW_AUTHORIZED_KEYS="%h/.ssh/authorized_keys"
--- /dev/null
+#!/usr/bin/env bash
+
+# monkeysphere-authentication: Monkeysphere authentication admin tool
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@fifthhorseman.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008, and are all released under the GPL, version 3
+# or later.
+
+########################################################################
+PGRM=$(basename $0)
+
+SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
+export SYSSHAREDIR
+. "${SYSSHAREDIR}/common" || exit 1
+
+SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere/authentication"}
+export SYSDATADIR
+
+# monkeysphere temp directory, in sysdatadir to enable atomic moves of
+# authorized_keys files
+MSTMPDIR="${SYSDATADIR}/tmp"
+export MSTMPDIR
+
+# UTC date in ISO 8601 format if needed
+DATE=$(date -u '+%FT%T')
+
+# unset some environment variables that could screw things up
+unset GREP_OPTIONS
+
+# default return code
+RETURN=0
+
+########################################################################
+# FUNCTIONS
+########################################################################
+
+usage() {
+ cat <<EOF >&2
+usage: $PGRM <subcommand> [options] [args]
+Monkeysphere authentication admin tool.
+
+subcommands:
+ update-users (u) [USER]... update user authorized_keys files
+ add-id-certifier (c+) KEYID import and tsign a certification key
+ --domain (-n) DOMAIN limit ID certifications to DOMAIN
+ --trust (-t) TRUST trust level of certifier (full)
+ --depth (-d) DEPTH trust depth for certifier (1)
+ remove-id-certifier (c-) KEYID remove a certification key
+ list-id-certifiers (c) list certification keys
+
+ expert
+ diagnostics (d) monkeysphere authentication status
+ gpg-cmd CMD execute gpg command
+
+ version (v) show version number
+ help (h,?) this help
+
+EOF
+}
+
+# function to run command as monkeysphere user
+su_monkeysphere_user() {
+ # if the current user is the monkeysphere user, then just eval
+ # command
+ if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
+ eval "$@"
+
+ # otherwise su command as monkeysphere user
+ else
+ su "$MONKEYSPHERE_USER" -c "$@"
+ fi
+}
+
+# function to interact with the host gnupg keyring
+gpg_host() {
+ local returnCode
+
+ GNUPGHOME="$GNUPGHOME_HOST"
+ export GNUPGHOME
+
+ # NOTE: we supress this warning because we need the monkeysphere
+ # user to be able to read the host pubring. we realize this might
+ # be problematic, but it's the simplest solution, without too much
+ # loss of security.
+ gpg --no-permission-warning "$@"
+ returnCode="$?"
+
+ # always reset the permissions on the host pubring so that the
+ # monkeysphere user can read the trust signatures
+ chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg"
+ chmod g+r "${GNUPGHOME_HOST}/pubring.gpg"
+
+ return "$returnCode"
+}
+
+# function to interact with the authentication gnupg keyring
+# FIXME: this function requires basically accepts only a single
+# argument because of problems with quote expansion. this needs to be
+# fixed/improved.
+gpg_authentication() {
+ GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
+ export GNUPGHOME
+
+ su_monkeysphere_user "gpg $@"
+}
+
+# check if user is root
+is_root() {
+ [ $(id -u 2>/dev/null) = '0' ]
+}
+
+# check that user is root, for functions that require root access
+check_user() {
+ is_root || failure "You must be root to run this command."
+}
+
+# output just key fingerprint
+fingerprint_server_key() {
+ # set the pipefail option so functions fails if can't read sec key
+ set -o pipefail
+
+ gpg_host --list-secret-keys --fingerprint \
+ --with-colons --fixed-list-mode 2> /dev/null | \
+ grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null
+}
+
+# function to check for host secret key
+check_host_keyring() {
+ fingerprint_server_key >/dev/null \
+ || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first."
+}
+
+# update authorized_keys for users
+update_users() {
+ if [ "$1" ] ; then
+ # get users from command line
+ unames="$@"
+ else
+ # or just look at all users if none specified
+ unames=$(getent passwd | cut -d: -f1)
+ fi
+
+ RETCODE=0
+
+ # set mode
+ MODE="authorized_keys"
+
+ # set gnupg home
+ GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
+
+ # check to see if the gpg trust database has been initialized
+ if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
+ failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
+ fi
+
+ # make sure the authorized_keys directory exists
+ mkdir -p "${SYSDATADIR}/authorized_keys"
+
+ # loop over users
+ for uname in $unames ; do
+ # check all specified users exist
+ if ! id "$uname" >/dev/null ; then
+ log error "----- unknown user '$uname' -----"
+ continue
+ fi
+
+ log verbose "----- user: $uname -----"
+
+ # make temporary directory
+ TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
+
+ # trap to delete temporary directory on exit
+ trap "rm -rf $TMPLOC" EXIT
+
+ # create temporary authorized_user_ids file
+ TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
+ touch "$TMP_AUTHORIZED_USER_IDS"
+
+ # create temporary authorized_keys file
+ AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
+ touch "$AUTHORIZED_KEYS"
+
+ # set restrictive permissions on the temporary files
+ # FIXME: is there a better way to do this?
+ chmod 0700 "$TMPLOC"
+ chmod 0600 "$AUTHORIZED_KEYS"
+ chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
+ chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
+
+ # process authorized_user_ids file
+ log debug "checking for authorized_user_ids..."
+ # translating ssh-style path variables
+ authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
+ if [ -s "$authorizedUserIDs" ] ; then
+ # check permissions on the authorized_user_ids file path
+ if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
+ # copy user authorized_user_ids file to temporary
+ # location
+ cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
+
+ # export needed variables
+ export AUTHORIZED_KEYS
+ export TMP_AUTHORIZED_USER_IDS
+
+ # process authorized_user_ids file, as monkeysphere
+ # user
+ su_monkeysphere_user \
+ ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
+ RETURN="$?"
+ else
+ log debug "not processing authorized_user_ids."
+ fi
+ else
+ log debug "empty or absent authorized_user_ids file."
+ fi
+
+ # add user-controlled authorized_keys file if specified
+ # translate ssh-style path variables
+ rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
+ if [ "$rawAuthorizedKeys" != 'none' ] ; then
+ log debug "checking for raw authorized_keys..."
+ if [ -s "$rawAuthorizedKeys" ] ; then
+ # check permissions on the authorized_keys file path
+ if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
+ log verbose "adding raw authorized_keys file... "
+ cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
+ else
+ log debug "not adding raw authorized_keys file."
+ fi
+ else
+ log debug "empty or absent authorized_keys file."
+ fi
+ fi
+
+ # move the new authorized_keys file into place
+ if [ -s "$AUTHORIZED_KEYS" ] ; then
+ # openssh appears to check the contents of the
+ # authorized_keys file as the user in question, so the
+ # file must be readable by that user at least.
+
+ # but in general, we don't want the user tampering with
+ # this file directly, so we'll adopt this approach: Own
+ # the file by the monkeysphere-server invoker (usually
+ # root, but should be the same uid that sshd is launched
+ # as); change the group of the file so that members of the
+ # user's group can read it.
+
+ # FIXME: is there a better way to do this?
+ chown $(whoami) "$AUTHORIZED_KEYS" && \
+ chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
+ chmod g+r "$AUTHORIZED_KEYS" && \
+ mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}" || \
+ {
+ log error "Failed to install authorized_keys for '$uname'!"
+ rm -f "${SYSDATADIR}/authorized_keys/${uname}"
+ # indicate that there has been a failure:
+ RETURN=1
+ }
+ else
+ rm -f "${SYSDATADIR}/authorized_keys/${uname}"
+ fi
+
+ # unset the trap
+ trap - EXIT
+
+ # destroy temporary directory
+ rm -rf "$TMPLOC"
+ done
+}
+
+diagnostics() {
+# * check on the status and validity of the key and public certificates
+ local seckey
+ local keysfound
+ local curdate
+ local warnwindow
+ local warndate
+ local create
+ local expire
+ local uid
+ local fingerprint
+ local badhostkeys
+ local sshd_config
+ local problemsfound=0
+
+ # FIXME: what's the correct, cross-platform answer?
+ sshd_config=/etc/ssh/sshd_config
+ seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
+ keysfound=$(echo "$seckey" | grep -c ^sec:)
+ curdate=$(date +%s)
+ # warn when anything is 2 months away from expiration
+ warnwindow='2 months'
+ warndate=$(advance_date $warnwindow +%s)
+
+ if ! id monkeysphere >/dev/null ; then
+ echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ if ! [ -d "$SYSDATADIR" ] ; then
+ echo "! no $SYSDATADIR directory found. Please create it."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ echo "Checking host GPG key..."
+ if (( "$keysfound" < 1 )); then
+ echo "! No host key found."
+ echo " - Recommendation: run 'monkeysphere-server gen-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$keysfound" > 1 )); then
+ echo "! More than one host key found?"
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ else
+ create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
+ expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
+ fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
+ # check for key expiration:
+ if [ "$expire" ]; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! Host key is expired."
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+
+ # and weirdnesses:
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! Host key was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # check for UserID expiration:
+ echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
+ while IFS=: read create expire uid ; do
+ # FIXME: should we be doing any checking on the form
+ # of the User ID? Should we be unmangling it somehow?
+
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if [ "$expire" ] ; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! User ID '$uid' is expired."
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+ done
+
+# FIXME: verify that the host key is properly published to the
+# keyservers (do this with the non-privileged user)
+
+# FIXME: check that there are valid, non-expired certifying signatures
+# attached to the host key after fetching from the public keyserver
+# (do this with the non-privileged user as well)
+
+# FIXME: propose adding a revoker to the host key if none exist (do we
+# have a way to do that after key generation?)
+
+ # Ensure that the ssh_host_rsa_key file is present and non-empty:
+ echo
+ echo "Checking host SSH key..."
+ if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
+ echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
+ problemsfound=$(($problemsfound+1))
+ else
+ if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
+ echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # propose changes needed for sshd_config (if any)
+ if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
+ echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
+ echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
+ echo "! $sshd_config refers to some non-monkeysphere host keys:"
+ echo "$badhostkeys"
+ echo " - Recommendation: remove the above HostKey lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # FIXME: test (with ssh-keyscan?) that the running ssh
+ # daemon is actually offering the monkeysphere host key.
+
+ fi
+ fi
+
+# FIXME: look at the ownership/privileges of the various keyrings,
+# directories housing them, etc (what should those values be? can
+# we make them as minimal as possible?)
+
+# FIXME: look to see that the ownertrust rules are set properly on the
+# authentication keyring
+
+# FIXME: make sure that at least one identity certifier exists
+
+# FIXME: look at the timestamps on the monkeysphere-generated
+# authorized_keys files -- warn if they seem out-of-date.
+
+# FIXME: check for a cronjob that updates monkeysphere-generated
+# authorized_keys?
+
+ echo
+ echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
+ # Ensure that User ID authentication is enabled:
+ if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
+ echo "! $sshd_config does not point to monkeysphere authorized keys."
+ echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
+ echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
+ echo "$badauthorizedkeys"
+ echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ if [ "$problemsfound" -gt 0 ]; then
+ echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
+ echo " monkeysphere-server diagnostics"
+ else
+ echo "Everything seems to be in order!"
+ fi
+}
+
+# retrieve key from web of trust, import it into the host keyring, and
+# ltsign the key in the host keyring so that it may certify other keys
+add_certifier() {
+ local domain
+ local trust
+ local depth
+ local keyID
+ local fingerprint
+ local ltsignCommand
+ local trustval
+
+ # set default values for trust depth and domain
+ domain=
+ trust=full
+ depth=1
+
+ # get options
+ while true ; do
+ case "$1" in
+ -n|--domain)
+ domain="$2"
+ shift 2
+ ;;
+ -t|--trust)
+ trust="$2"
+ shift 2
+ ;;
+ -d|--depth)
+ depth="$2"
+ shift 2
+ ;;
+ *)
+ if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
+ failure "Unknown option '$1'.
+Type '$PGRM help' for usage."
+ fi
+ break
+ ;;
+ esac
+ done
+
+ keyID="$1"
+ if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to add, or specify a file to read the key from."
+ fi
+ if [ -f "$keyID" ] ; then
+ echo "Reading key from file '$keyID':"
+ importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
+ # FIXME: if this is tried when the key database is not
+ # up-to-date, i got these errors (using set -x):
+
+# ++ su -m monkeysphere -c '\''gpg --import'\''
+# Warning: using insecure memory!
+# gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
+# gpg: Total number processed: 1
+# gpg: imported: 1 (RSA: 1)
+# gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
+# gpg: failed to rebuild keyring cache: Permission denied
+# gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
+# gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
+# gpg: next trustdb check due at 2009-01-10'
+# + failure 'could not read key from '\''/root/dkg.gpg'\'''
+# + echo 'could not read key from '\''/root/dkg.gpg'\'''
+
+ keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
+ if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
+ failure "Expected there to be a single gpg key in the file."
+ fi
+ else
+ # get the key from the key server
+ gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
+ fi
+
+ export keyID
+
+
+ # get the full fingerprint of a key ID
+ fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
+ grep '^fpr:' | grep "$keyID" | cut -d: -f10)
+
+ if [ -z "$fingerprint" ] ; then
+ failure "Key '$keyID' not found."
+ fi
+
+ echo
+ echo "key found:"
+ gpg_authentication "--fingerprint 0x${fingerprint}!"
+
+ echo "Are you sure you want to add the above key as a"
+ read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
+ if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "Identity certifier not added."
+ fi
+
+ # export the key to the host keyring
+ gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
+
+ if [ "$trust" = marginal ]; then
+ trustval=1
+ elif [ "$trust" = full ]; then
+ trustval=2
+ else
+ failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
+ fi
+
+ # ltsign command
+ # NOTE: *all* user IDs will be ltsigned
+ ltsignCommand=$(cat <<EOF
+ltsign
+y
+$trustval
+$depth
+$domain
+y
+save
+EOF
+ )
+
+ # ltsign the key
+ if echo "$ltsignCommand" | \
+ gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ # update the trustdb for the authentication keyring
+ gpg_authentication "--check-trustdb"
+
+ echo
+ echo "Identity certifier added."
+ else
+ failure "Problem adding identify certifier."
+ fi
+}
+
+# delete a certifiers key from the host keyring
+remove_certifier() {
+ local keyID
+ local fingerprint
+
+ keyID="$1"
+ if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to remove."
+ fi
+
+ if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
+ read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
+ if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "Identity certifier not removed."
+ fi
+ else
+ failure
+ fi
+
+ # delete the requested key
+ if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
+ # delete key from host keyring as well
+ gpg_host --delete-key --batch --yes "0x${keyID}!"
+
+ # update the trustdb for the authentication keyring
+ gpg_authentication "--check-trustdb"
+
+ echo
+ echo "Identity certifier removed."
+ else
+ failure "Problem removing identity certifier."
+ fi
+}
+
+# list the host certifiers
+list_certifiers() {
+ local keys
+ local key
+
+ # find trusted keys in authentication keychain
+ keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
+ grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
+
+ # output keys
+ for key in $keys ; do
+ gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
+ done
+}
+
+########################################################################
+# MAIN
+########################################################################
+
+# unset variables that should be defined only in config file
+unset KEYSERVER
+unset AUTHORIZED_USER_IDS
+unset RAW_AUTHORIZED_KEYS
+unset MONKEYSPHERE_USER
+
+# load configuration file
+[ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
+
+# set empty config variable with ones from the environment, or with
+# defaults
+LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
+KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
+AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
+RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
+MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
+
+# other variables
+CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
+REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
+GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
+GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
+
+# export variables needed in su invocation
+export DATE
+export MODE
+export MONKEYSPHERE_USER
+export LOG_LEVEL
+export KEYSERVER
+export CHECK_KEYSERVER
+export REQUIRED_USER_KEY_CAPABILITY
+export GNUPGHOME_HOST
+export GNUPGHOME_AUTHENTICATION
+export GNUPGHOME
+
+# get subcommand
+COMMAND="$1"
+[ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
+shift
+
+case $COMMAND in
+ 'update-users'|'update-user'|'u')
+ check_user
+ check_host_keyring
+ update_users "$@"
+ ;;
+
+ 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
+ check_user
+ check_host_keyring
+ add_certifier "$@"
+ ;;
+
+ 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
+ check_user
+ check_host_keyring
+ remove_certifier "$@"
+ ;;
+
+ 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
+ check_user
+ check_host_keyring
+ list_certifiers "$@"
+ ;;
+
+ 'expert'|'e')
+ check_user
+ SUBCOMMAND="$1"
+ shift
+ case "$SUBCOMMAND" in
+ 'diagnostics'|'d')
+ diagnostics
+ ;;
+
+ 'gpg-cmd')
+ gpg_authentication "$@"
+ ;;
+
+ *)
+ failure "Unknown expert subcommand: '$COMMAND'
+Type '$PGRM help' for usage."
+ ;;
+ esac
+ ;;
+
+ 'version'|'v')
+ echo "$VERSION"
+ ;;
+
+ '--help'|'help'|'-h'|'h'|'?')
+ usage
+ ;;
+
+ *)
+ failure "Unknown command: '$COMMAND'
+Type '$PGRM help' for usage."
+ ;;
+esac
+
+exit "$RETURN"
--- /dev/null
+#!/usr/bin/env bash
+
+# monkeysphere-host: Monkeysphere host admin tool
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@fifthhorseman.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008, and are all released under the GPL, version 3
+# or later.
+
+########################################################################
+PGRM=$(basename $0)
+
+SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
+export SYSSHAREDIR
+. "${SYSSHAREDIR}/common" || exit 1
+
+SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere/host"}
+export SYSDATADIR
+
+# monkeysphere temp directory, in sysdatadir to enable atomic moves of
+# authorized_keys files
+MSTMPDIR="${SYSDATADIR}/tmp"
+export MSTMPDIR
+
+# UTC date in ISO 8601 format if needed
+DATE=$(date -u '+%FT%T')
+
+# unset some environment variables that could screw things up
+unset GREP_OPTIONS
+
+# default return code
+RETURN=0
+
+########################################################################
+# FUNCTIONS
+########################################################################
+
+usage() {
+ cat <<EOF >&2
+usage: $PGRM <subcommand> [options] [args]
+Monkeysphere host admin tool.
+
+subcommands:
+ show-key (s) output all host key information
+ extend-key (e) EXPIRE extend host key expiration
+ add-hostname (n+) NAME[:PORT] add hostname user ID to host key
+ revoke-hostname (n-) NAME[:PORT] revoke hostname user ID
+ add-revoker (o) FINGERPRINT add a revoker to the host key
+ revoke-key (r) revoke host key
+ publish-key (p) publish server host key to keyserver
+
+ expert
+ import-key (i) import existing ssh key to gpg
+ --hostname (-h) NAME[:PORT] hostname for key user ID
+ --keyfile (-f) FILE key file to import
+ --expire (-e) EXPIRE date to expire
+ gen-key (g) generate gpg key for the host
+ --hostname (-h) NAME[:PORT] hostname for key user ID
+ --length (-l) BITS key length in bits (2048)
+ --expire (-e) EXPIRE date to expire
+ --revoker (-r) FINGERPRINT add a revoker
+ diagnostics (d) monkeysphere host status
+
+ version (v) show version number
+ help (h,?) this help
+
+EOF
+}
+
+# function to run command as monkeysphere user
+su_monkeysphere_user() {
+ # if the current user is the monkeysphere user, then just eval
+ # command
+ if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
+ eval "$@"
+
+ # otherwise su command as monkeysphere user
+ else
+ su "$MONKEYSPHERE_USER" -c "$@"
+ fi
+}
+
+# function to interact with the host gnupg keyring
+gpg_host() {
+ local returnCode
+
+ GNUPGHOME="$GNUPGHOME_HOST"
+ export GNUPGHOME
+
+ # NOTE: we supress this warning because we need the monkeysphere
+ # user to be able to read the host pubring. we realize this might
+ # be problematic, but it's the simplest solution, without too much
+ # loss of security.
+ gpg --no-permission-warning "$@"
+ returnCode="$?"
+
+ # always reset the permissions on the host pubring so that the
+ # monkeysphere user can read the trust signatures
+ chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg"
+ chmod g+r "${GNUPGHOME_HOST}/pubring.gpg"
+
+ return "$returnCode"
+}
+
+# check if user is root
+is_root() {
+ [ $(id -u 2>/dev/null) = '0' ]
+}
+
+# check that user is root, for functions that require root access
+check_user() {
+ is_root || failure "You must be root to run this command."
+}
+
+# output just key fingerprint
+fingerprint_server_key() {
+ # set the pipefail option so functions fails if can't read sec key
+ set -o pipefail
+
+ gpg_host --list-secret-keys --fingerprint \
+ --with-colons --fixed-list-mode 2> /dev/null | \
+ grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null
+}
+
+# function to check for host secret key
+check_host_keyring() {
+ fingerprint_server_key >/dev/null \
+ || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first."
+}
+
+# output key information
+show_server_key() {
+ local fingerprintPGP
+ local fingerprintSSH
+ local ret=0
+
+ # FIXME: you shouldn't have to be root to see the host key fingerprint
+ if is_root ; then
+ check_host_keyring
+ fingerprintPGP=$(fingerprint_server_key)
+ gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprintPGP" 2>/dev/null
+ echo "OpenPGP fingerprint: $fingerprintPGP"
+ else
+ log info "You must be root to see host OpenPGP fingerprint."
+ ret='1'
+ fi
+
+ if [ -f "${SYSDATADIR}/ssh_host_rsa_key.pub" ] ; then
+ fingerprintSSH=$(ssh-keygen -l -f "${SYSDATADIR}/ssh_host_rsa_key.pub" | \
+ awk '{ print $1, $2, $4 }')
+ echo "ssh fingerprint: $fingerprintSSH"
+ else
+ log info "SSH host key not found."
+ ret='1'
+ fi
+
+ return $ret
+}
+
+# import an existing ssh key to a gpg key
+import_key() {
+ local hostName=$(hostname -f)
+ local keyFile="/etc/ssh/ssh_host_rsa_key"
+ local keyExpire
+ local userID
+
+ # check for presense of secret key
+ # FIXME: is this the proper test to be doing here?
+ fingerprint_server_key >/dev/null \
+ && failure "An OpenPGP host key already exists."
+
+ # get options
+ while true ; do
+ case "$1" in
+ -h|--hostname)
+ hostName="$2"
+ shift 2
+ ;;
+ -f|--keyfile)
+ keyFile="$2"
+ shift 2
+ ;;
+ -e|--expire)
+ keyExpire="$2"
+ shift 2
+ ;;
+ *)
+ if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
+ failure "Unknown option '$1'.
+Type '$PGRM help' for usage."
+ fi
+ break
+ ;;
+ esac
+ done
+
+ if [ ! -f "$keyFile" ] ; then
+ failure "SSH secret key file '$keyFile' not found."
+ fi
+
+ userID="ssh://${hostName}"
+
+ # prompt about key expiration if not specified
+ keyExpire=$(get_gpg_expiration "$keyExpire")
+
+ echo "The following key parameters will be used for the host private key:"
+ echo "Import: $keyFile"
+ echo "Name-Real: $userID"
+ echo "Expire-Date: $keyExpire"
+
+ read -p "Import key? (Y/n) " OK; OK=${OK:=Y}
+ if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "aborting."
+ fi
+
+ log verbose "importing ssh key..."
+ # translate ssh key to a private key
+ (umask 077 && \
+ pem2openpgp "$userID" "$keyExpire" < "$sshKey" | gpg_host --import)
+
+ # find the key fingerprint of the newly converted key
+ fingerprint=$(fingerprint_server_key)
+
+ # export host ownertrust to authentication keyring
+ log verbose "setting ultimate owner trust for host key..."
+ echo "${fingerprint}:6:" | gpg_host "--import-ownertrust"
+ echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
+
+ # export public key to file
+ gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+ log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+
+ # show info about new key
+ show_server_key
+}
+
+# generate server gpg key
+gen_key() {
+ local keyType="RSA"
+ local keyLength="2048"
+ local keyUsage="auth"
+ local keyExpire
+ local revoker
+ local hostName=$(hostname -f)
+ local userID
+ local keyParameters
+ local fingerprint
+
+ # check for presense of secret key
+ # FIXME: is this the proper test to be doing here?
+ fingerprint_server_key >/dev/null \
+ && failure "An OpenPGP host key already exists."
+
+ # get options
+ while true ; do
+ case "$1" in
+ -h|--hostname)
+ hostName="$2"
+ shift 2
+ ;;
+ -l|--length)
+ keyLength="$2"
+ shift 2
+ ;;
+ -e|--expire)
+ keyExpire="$2"
+ shift 2
+ ;;
+ -r|--revoker)
+ revoker="$2"
+ shift 2
+ ;;
+ *)
+ if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
+ failure "Unknown option '$1'.
+Type '$PGRM help' for usage."
+ fi
+ break
+ ;;
+ esac
+ done
+
+ userID="ssh://${hostName}"
+
+ # prompt about key expiration if not specified
+ keyExpire=$(get_gpg_expiration "$keyExpire")
+
+ # set key parameters
+ keyParameters=\
+"Key-Type: $keyType
+Key-Length: $keyLength
+Key-Usage: $keyUsage
+Name-Real: $userID
+Expire-Date: $keyExpire"
+
+ # add the revoker field if specified
+ # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
+ # FIXME: key is marked "sensitive"? is this appropriate?
+ if [ "$revoker" ] ; then
+ keyParameters=\
+"${keyParameters}
+Revoker: 1:${revoker} sensitive"
+ fi
+
+ echo "The following key parameters will be used for the host private key:"
+ echo "$keyParameters"
+
+ read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
+ if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "aborting."
+ fi
+
+ # add commit command
+ # must include blank line!
+ keyParameters=\
+"${keyParameters}
+
+%commit
+%echo done"
+
+ log verbose "generating host key..."
+ echo "$keyParameters" | gpg_host --batch --gen-key
+
+ # find the key fingerprint of the newly generated key
+ fingerprint=$(fingerprint_server_key)
+
+ # export host ownertrust to authentication keyring
+ log verbose "setting ultimate owner trust for host key..."
+ echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
+
+ # translate the private key to ssh format, and export to a file
+ # for sshs usage.
+ # NOTE: assumes that the primary key is the proper key to use
+ (umask 077 && \
+ gpg_host --export-secret-key "$fingerprint" | \
+ openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
+ log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
+ ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
+ log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
+ gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+ log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
+
+ # show info about new key
+ show_server_key
+}
+
+# extend the lifetime of a host key:
+extend_key() {
+ local fpr=$(fingerprint_server_key)
+ local extendTo="$1"
+
+ # get the new expiration date
+ extendTo=$(get_gpg_expiration "$extendTo")
+
+ gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
+expire
+$extendTo
+save
+EOF
+
+ echo
+ echo "NOTE: Host key expiration date adjusted, but not yet published."
+ echo "Run '$PGRM publish-key' to publish the new expiration date."
+}
+
+# add hostname user ID to server key
+add_hostname() {
+ local userID
+ local fingerprint
+ local tmpuidMatch
+ local line
+ local adduidCommand
+
+ if [ -z "$1" ] ; then
+ failure "You must specify a hostname to add."
+ fi
+
+ userID="ssh://${1}"
+
+ fingerprint=$(fingerprint_server_key)
+
+ # match to only ultimately trusted user IDs
+ tmpuidMatch="u:$(echo $userID | gpg_escape)"
+
+ # find the index of the requsted user ID
+ # NOTE: this is based on circumstantial evidence that the order of
+ # this output is the appropriate index
+ if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
+ | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
+ failure "Host userID '$userID' already exists."
+ fi
+
+ echo "The following user ID will be added to the host key:"
+ echo " $userID"
+ read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
+ if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "User ID not added."
+ fi
+
+ # edit-key script command to add user ID
+ adduidCommand=$(cat <<EOF
+adduid
+$userID
+
+
+save
+EOF
+)
+
+ # execute edit-key script
+ if echo "$adduidCommand" | \
+ gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ # update the trustdb for the authentication keyring
+ gpg_authentication "--check-trustdb"
+
+ show_server_key
+
+ echo
+ echo "NOTE: User ID added to key, but key not published."
+ echo "Run '$PGRM publish-key' to publish the new user ID."
+ else
+ failure "Problem adding user ID."
+ fi
+}
+
+# revoke hostname user ID to server key
+revoke_hostname() {
+ local userID
+ local fingerprint
+ local tmpuidMatch
+ local line
+ local uidIndex
+ local message
+ local revuidCommand
+
+ if [ -z "$1" ] ; then
+ failure "You must specify a hostname to revoke."
+ fi
+
+ echo "WARNING: There is a known bug in this function."
+ echo "This function has been known to occasionally revoke the wrong user ID."
+ echo "Please see the following bug report for more information:"
+ echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
+ read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
+ if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "aborting."
+ fi
+
+ userID="ssh://${1}"
+
+ fingerprint=$(fingerprint_server_key)
+
+ # match to only ultimately trusted user IDs
+ tmpuidMatch="u:$(echo $userID | gpg_escape)"
+
+ # find the index of the requsted user ID
+ # NOTE: this is based on circumstantial evidence that the order of
+ # this output is the appropriate index
+ if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
+ | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
+ uidIndex=${line%%:*}
+ else
+ failure "No non-revoked user ID '$userID' is found."
+ fi
+
+ echo "The following host key user ID will be revoked:"
+ echo " $userID"
+ read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
+ if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "User ID not revoked."
+ fi
+
+ message="Hostname removed by monkeysphere-server $DATE"
+
+ # edit-key script command to revoke user ID
+ revuidCommand=$(cat <<EOF
+$uidIndex
+revuid
+y
+4
+$message
+
+y
+save
+EOF
+ )
+
+ # execute edit-key script
+ if echo "$revuidCommand" | \
+ gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ # update the trustdb for the authentication keyring
+ gpg_authentication "--check-trustdb"
+
+ show_server_key
+
+ echo
+ echo "NOTE: User ID revoked, but revocation not published."
+ echo "Run '$PGRM publish-key' to publish the revocation."
+ else
+ failure "Problem revoking user ID."
+ fi
+}
+
+# add a revoker to the host key
+add_revoker() {
+ # FIXME: implement!
+ failure "not implemented yet!"
+}
+
+# revoke the host key
+revoke_key() {
+ # FIXME: implement!
+ failure "not implemented yet!"
+}
+
+# publish server key to keyserver
+publish_server_key() {
+ read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
+ if [ ${OK/y/Y} != 'Y' ] ; then
+ failure "key not published."
+ fi
+
+ # find the key fingerprint
+ fingerprint=$(fingerprint_server_key)
+
+ # publish host key
+ gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
+}
+
+diagnostics() {
+# * check on the status and validity of the key and public certificates
+ local seckey
+ local keysfound
+ local curdate
+ local warnwindow
+ local warndate
+ local create
+ local expire
+ local uid
+ local fingerprint
+ local badhostkeys
+ local sshd_config
+ local problemsfound=0
+
+ # FIXME: what's the correct, cross-platform answer?
+ sshd_config=/etc/ssh/sshd_config
+ seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
+ keysfound=$(echo "$seckey" | grep -c ^sec:)
+ curdate=$(date +%s)
+ # warn when anything is 2 months away from expiration
+ warnwindow='2 months'
+ warndate=$(advance_date $warnwindow +%s)
+
+ if ! id monkeysphere >/dev/null ; then
+ echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ if ! [ -d "$SYSDATADIR" ] ; then
+ echo "! no $SYSDATADIR directory found. Please create it."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ echo "Checking host GPG key..."
+ if (( "$keysfound" < 1 )); then
+ echo "! No host key found."
+ echo " - Recommendation: run 'monkeysphere-server gen-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$keysfound" > 1 )); then
+ echo "! More than one host key found?"
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ else
+ create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
+ expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
+ fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
+ # check for key expiration:
+ if [ "$expire" ]; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! Host key is expired."
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+
+ # and weirdnesses:
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! Host key was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # check for UserID expiration:
+ echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
+ while IFS=: read create expire uid ; do
+ # FIXME: should we be doing any checking on the form
+ # of the User ID? Should we be unmangling it somehow?
+
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if [ "$expire" ] ; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! User ID '$uid' is expired."
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+ done
+
+# FIXME: verify that the host key is properly published to the
+# keyservers (do this with the non-privileged user)
+
+# FIXME: check that there are valid, non-expired certifying signatures
+# attached to the host key after fetching from the public keyserver
+# (do this with the non-privileged user as well)
+
+# FIXME: propose adding a revoker to the host key if none exist (do we
+# have a way to do that after key generation?)
+
+ # Ensure that the ssh_host_rsa_key file is present and non-empty:
+ echo
+ echo "Checking host SSH key..."
+ if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
+ echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
+ problemsfound=$(($problemsfound+1))
+ else
+ if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
+ echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # propose changes needed for sshd_config (if any)
+ if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
+ echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
+ echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
+ echo "! $sshd_config refers to some non-monkeysphere host keys:"
+ echo "$badhostkeys"
+ echo " - Recommendation: remove the above HostKey lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # FIXME: test (with ssh-keyscan?) that the running ssh
+ # daemon is actually offering the monkeysphere host key.
+
+ fi
+ fi
+
+# FIXME: look at the ownership/privileges of the various keyrings,
+# directories housing them, etc (what should those values be? can
+# we make them as minimal as possible?)
+
+# FIXME: look to see that the ownertrust rules are set properly on the
+# authentication keyring
+
+# FIXME: make sure that at least one identity certifier exists
+
+# FIXME: look at the timestamps on the monkeysphere-generated
+# authorized_keys files -- warn if they seem out-of-date.
+
+# FIXME: check for a cronjob that updates monkeysphere-generated
+# authorized_keys?
+
+ echo
+ echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
+ # Ensure that User ID authentication is enabled:
+ if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
+ echo "! $sshd_config does not point to monkeysphere authorized keys."
+ echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
+ echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
+ echo "$badauthorizedkeys"
+ echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ if [ "$problemsfound" -gt 0 ]; then
+ echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
+ echo " monkeysphere-server diagnostics"
+ else
+ echo "Everything seems to be in order!"
+ fi
+}
+
+########################################################################
+# MAIN
+########################################################################
+
+# unset variables that should be defined only in config file
+unset KEYSERVER
+unset AUTHORIZED_USER_IDS
+unset RAW_AUTHORIZED_KEYS
+unset MONKEYSPHERE_USER
+
+# load configuration file
+[ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
+
+# set empty config variable with ones from the environment, or with
+# defaults
+LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
+KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
+AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
+RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
+MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
+
+# other variables
+CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
+REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
+GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
+GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
+
+# export variables needed in su invocation
+export DATE
+export MODE
+export MONKEYSPHERE_USER
+export LOG_LEVEL
+export KEYSERVER
+export CHECK_KEYSERVER
+export REQUIRED_USER_KEY_CAPABILITY
+export GNUPGHOME_HOST
+export GNUPGHOME_AUTHENTICATION
+export GNUPGHOME
+
+# get subcommand
+COMMAND="$1"
+[ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
+shift
+
+case $COMMAND in
+ 'show-key'|'show'|'s')
+ show_server_key
+ ;;
+
+ 'extend-key'|'e')
+ check_user
+ check_host_keyring
+ extend_key "$@"
+ ;;
+
+ 'add-hostname'|'add-name'|'n+')
+ check_user
+ check_host_keyring
+ add_hostname "$@"
+ ;;
+
+ 'revoke-hostname'|'revoke-name'|'n-')
+ check_user
+ check_host_keyring
+ revoke_hostname "$@"
+ ;;
+
+ 'add-revoker'|'o')
+ check_user
+ check_host_keyring
+ add_revoker "$@"
+ ;;
+
+ 'revoke-key'|'r')
+ check_user
+ check_host_keyring
+ revoke_key "$@"
+ ;;
+
+ 'publish-key'|'publish'|'p')
+ check_user
+ check_host_keyring
+ publish_server_key
+ ;;
+
+ 'expert'|'e')
+ check_user
+ SUBCOMMAND="$1"
+ shift
+ case "$SUBCOMMAND" in
+ 'import-key'|'i')
+ import_key "$@"
+ ;;
+
+ 'gen-key'|'g')
+ gen_key "$@"
+ ;;
+
+ 'diagnostics'|'d')
+ diagnostics
+ ;;
+
+ *)
+ failure "Unknown expert subcommand: '$COMMAND'
+Type '$PGRM help' for usage."
+ ;;
+ esac
+ ;;
+
+ 'version'|'v')
+ echo "$VERSION"
+ ;;
+
+ '--help'|'help'|'-h'|'h'|'?')
+ usage
+ ;;
+
+ *)
+ failure "Unknown command: '$COMMAND'
+Type '$PGRM help' for usage."
+ ;;
+esac
+
+exit "$RETURN"
+++ /dev/null
-#!/usr/bin/env bash
-
-# monkeysphere-server: MonkeySphere server admin tool
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@fifthhorseman.net>
-# Jamie McClelland <jm@mayfirst.org>
-# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
-#
-# They are Copyright 2008, and are all released under the GPL, version 3
-# or later.
-
-########################################################################
-PGRM=$(basename $0)
-
-SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
-export SYSSHAREDIR
-. "${SYSSHAREDIR}/common" || exit 1
-
-SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
-export SYSDATADIR
-
-# monkeysphere temp directory, in sysdatadir to enable atomic moves of
-# authorized_keys files
-MSTMPDIR="${SYSDATADIR}/tmp"
-export MSTMPDIR
-
-# UTC date in ISO 8601 format if needed
-DATE=$(date -u '+%FT%T')
-
-# unset some environment variables that could screw things up
-unset GREP_OPTIONS
-
-# default return code
-RETURN=0
-
-########################################################################
-# FUNCTIONS
-########################################################################
-
-usage() {
- cat <<EOF >&2
-usage: $PGRM <subcommand> [options] [args]
-Monkeysphere server admin tool.
-
-subcommands:
- update-users (u) [USER]... update user authorized_keys files
-
- import-key (i) import existing ssh key to gpg
- --hostname (-h) NAME[:PORT] hostname for key user ID
- --keyfile (-f) FILE key file to import
- --expire (-e) EXPIRE date to expire
- gen-key (g) generate gpg key for the host
- --hostname (-h) NAME[:PORT] hostname for key user ID
- --length (-l) BITS key length in bits (2048)
- --expire (-e) EXPIRE date to expire
- --revoker (-r) FINGERPRINT add a revoker
- extend-key (e) EXPIRE extend host key expiration
- add-hostname (n+) NAME[:PORT] add hostname user ID to host key
- revoke-hostname (n-) NAME[:PORT] revoke hostname user ID
- add-revoker (o) FINGERPRINT add a revoker to the host key
- revoke-key (r) revoke host key
- show-key (s) output all server host key information
- publish-key (p) publish server host key to keyserver
- diagnostics (d) report on server monkeysphere status
-
- add-id-certifier (c+) KEYID import and tsign a certification key
- --domain (-n) DOMAIN limit ID certifications to DOMAIN
- --trust (-t) TRUST trust level of certifier (full)
- --depth (-d) DEPTH trust depth for certifier (1)
- remove-id-certifier (c-) KEYID remove a certification key
- list-id-certifiers (c) list certification keys
-
- gpg-authentication-cmd CMD give a gpg command to the
- authentication keyring
-
- version (v) show version number
- help (h,?) this help
-
-EOF
-}
-
-# function to run command as monkeysphere user
-su_monkeysphere_user() {
- # if the current user is the monkeysphere user, then just eval
- # command
- if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
- eval "$@"
-
- # otherwise su command as monkeysphere user
- else
- su "$MONKEYSPHERE_USER" -c "$@"
- fi
-}
-
-# function to interact with the host gnupg keyring
-gpg_host() {
- local returnCode
-
- GNUPGHOME="$GNUPGHOME_HOST"
- export GNUPGHOME
-
- # NOTE: we supress this warning because we need the monkeysphere
- # user to be able to read the host pubring. we realize this might
- # be problematic, but it's the simplest solution, without too much
- # loss of security.
- gpg --no-permission-warning "$@"
- returnCode="$?"
-
- # always reset the permissions on the host pubring so that the
- # monkeysphere user can read the trust signatures
- chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg"
- chmod g+r "${GNUPGHOME_HOST}/pubring.gpg"
-
- return "$returnCode"
-}
-
-# function to interact with the authentication gnupg keyring
-# FIXME: this function requires basically accepts only a single
-# argument because of problems with quote expansion. this needs to be
-# fixed/improved.
-gpg_authentication() {
- GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
- export GNUPGHOME
-
- su_monkeysphere_user "gpg $@"
-}
-
-# check if user is root
-is_root() {
- [ $(id -u 2>/dev/null) = '0' ]
-}
-
-# check that user is root, for functions that require root access
-check_user() {
- is_root || failure "You must be root to run this command."
-}
-
-# output just key fingerprint
-fingerprint_server_key() {
- # set the pipefail option so functions fails if can't read sec key
- set -o pipefail
-
- gpg_host --list-secret-keys --fingerprint \
- --with-colons --fixed-list-mode 2> /dev/null | \
- grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null
-}
-
-# function to check for host secret key
-check_host_keyring() {
- fingerprint_server_key >/dev/null \
- || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first."
-}
-
-# output key information
-show_server_key() {
- local fingerprintPGP
- local fingerprintSSH
- local ret=0
-
- # FIXME: you shouldn't have to be root to see the host key fingerprint
- if is_root ; then
- check_host_keyring
- fingerprintPGP=$(fingerprint_server_key)
- gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprintPGP" 2>/dev/null
- echo "OpenPGP fingerprint: $fingerprintPGP"
- else
- log info "You must be root to see host OpenPGP fingerprint."
- ret='1'
- fi
-
- if [ -f "${SYSDATADIR}/ssh_host_rsa_key.pub" ] ; then
- fingerprintSSH=$(ssh-keygen -l -f "${SYSDATADIR}/ssh_host_rsa_key.pub" | \
- awk '{ print $1, $2, $4 }')
- echo "ssh fingerprint: $fingerprintSSH"
- else
- log info "SSH host key not found."
- ret='1'
- fi
-
- return $ret
-}
-
-# update authorized_keys for users
-update_users() {
- if [ "$1" ] ; then
- # get users from command line
- unames="$@"
- else
- # or just look at all users if none specified
- unames=$(getent passwd | cut -d: -f1)
- fi
-
- RETCODE=0
-
- # set mode
- MODE="authorized_keys"
-
- # set gnupg home
- GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
-
- # check to see if the gpg trust database has been initialized
- if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
- failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
- fi
-
- # make sure the authorized_keys directory exists
- mkdir -p "${SYSDATADIR}/authorized_keys"
-
- # loop over users
- for uname in $unames ; do
- # check all specified users exist
- if ! id "$uname" >/dev/null ; then
- log error "----- unknown user '$uname' -----"
- continue
- fi
-
- log verbose "----- user: $uname -----"
-
- # make temporary directory
- TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
-
- # trap to delete temporary directory on exit
- trap "rm -rf $TMPLOC" EXIT
-
- # create temporary authorized_user_ids file
- TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
- touch "$TMP_AUTHORIZED_USER_IDS"
-
- # create temporary authorized_keys file
- AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
- touch "$AUTHORIZED_KEYS"
-
- # set restrictive permissions on the temporary files
- # FIXME: is there a better way to do this?
- chmod 0700 "$TMPLOC"
- chmod 0600 "$AUTHORIZED_KEYS"
- chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
- chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
-
- # process authorized_user_ids file
- log debug "checking for authorized_user_ids..."
- # translating ssh-style path variables
- authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
- if [ -s "$authorizedUserIDs" ] ; then
- # check permissions on the authorized_user_ids file path
- if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
- # copy user authorized_user_ids file to temporary
- # location
- cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
-
- # export needed variables
- export AUTHORIZED_KEYS
- export TMP_AUTHORIZED_USER_IDS
-
- # process authorized_user_ids file, as monkeysphere
- # user
- su_monkeysphere_user \
- ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
- RETURN="$?"
- else
- log debug "not processing authorized_user_ids."
- fi
- else
- log debug "empty or absent authorized_user_ids file."
- fi
-
- # add user-controlled authorized_keys file if specified
- # translate ssh-style path variables
- rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
- if [ "$rawAuthorizedKeys" != 'none' ] ; then
- log debug "checking for raw authorized_keys..."
- if [ -s "$rawAuthorizedKeys" ] ; then
- # check permissions on the authorized_keys file path
- if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
- log verbose "adding raw authorized_keys file... "
- cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
- else
- log debug "not adding raw authorized_keys file."
- fi
- else
- log debug "empty or absent authorized_keys file."
- fi
- fi
-
- # move the new authorized_keys file into place
- if [ -s "$AUTHORIZED_KEYS" ] ; then
- # openssh appears to check the contents of the
- # authorized_keys file as the user in question, so the
- # file must be readable by that user at least.
-
- # but in general, we don't want the user tampering with
- # this file directly, so we'll adopt this approach: Own
- # the file by the monkeysphere-server invoker (usually
- # root, but should be the same uid that sshd is launched
- # as); change the group of the file so that members of the
- # user's group can read it.
-
- # FIXME: is there a better way to do this?
- chown $(whoami) "$AUTHORIZED_KEYS" && \
- chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
- chmod g+r "$AUTHORIZED_KEYS" && \
- mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}" || \
- {
- log error "Failed to install authorized_keys for '$uname'!"
- rm -f "${SYSDATADIR}/authorized_keys/${uname}"
- # indicate that there has been a failure:
- RETURN=1
- }
- else
- rm -f "${SYSDATADIR}/authorized_keys/${uname}"
- fi
-
- # unset the trap
- trap - EXIT
-
- # destroy temporary directory
- rm -rf "$TMPLOC"
- done
-}
-
-# import an existing ssh key to a gpg key
-import_key() {
- local hostName=$(hostname -f)
- local keyFile="/etc/ssh/ssh_host_rsa_key"
- local keyExpire
- local userID
-
- # check for presense of secret key
- # FIXME: is this the proper test to be doing here?
- fingerprint_server_key >/dev/null \
- && failure "An OpenPGP host key already exists."
-
- # get options
- while true ; do
- case "$1" in
- -h|--hostname)
- hostName="$2"
- shift 2
- ;;
- -f|--keyfile)
- keyFile="$2"
- shift 2
- ;;
- -e|--expire)
- keyExpire="$2"
- shift 2
- ;;
- *)
- if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
- failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
- fi
- break
- ;;
- esac
- done
-
- if [ ! -f "$keyFile" ] ; then
- failure "SSH secret key file '$keyFile' not found."
- fi
-
- userID="ssh://${hostName}"
-
- # prompt about key expiration if not specified
- keyExpire=$(get_gpg_expiration "$keyExpire")
-
- echo "The following key parameters will be used for the host private key:"
- echo "Import: $keyFile"
- echo "Name-Real: $userID"
- echo "Expire-Date: $keyExpire"
-
- read -p "Import key? (Y/n) " OK; OK=${OK:=Y}
- if [ ${OK/y/Y} != 'Y' ] ; then
- failure "aborting."
- fi
-
- log verbose "importing ssh key..."
- # translate ssh key to a private key
- (umask 077 && \
- pem2openpgp "$userID" "$keyExpire" < "$sshKey" | gpg_host --import)
-
- # find the key fingerprint of the newly converted key
- fingerprint=$(fingerprint_server_key)
-
- # export host ownertrust to authentication keyring
- log verbose "setting ultimate owner trust for host key..."
- echo "${fingerprint}:6:" | gpg_host "--import-ownertrust"
- echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
-
- # export public key to file
- gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
- log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-
- # show info about new key
- show_server_key
-}
-
-# generate server gpg key
-gen_key() {
- local keyType="RSA"
- local keyLength="2048"
- local keyUsage="auth"
- local keyExpire
- local revoker
- local hostName=$(hostname -f)
- local userID
- local keyParameters
- local fingerprint
-
- # check for presense of secret key
- # FIXME: is this the proper test to be doing here?
- fingerprint_server_key >/dev/null \
- && failure "An OpenPGP host key already exists."
-
- # get options
- while true ; do
- case "$1" in
- -h|--hostname)
- hostName="$2"
- shift 2
- ;;
- -l|--length)
- keyLength="$2"
- shift 2
- ;;
- -e|--expire)
- keyExpire="$2"
- shift 2
- ;;
- -r|--revoker)
- revoker="$2"
- shift 2
- ;;
- *)
- if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
- failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
- fi
- break
- ;;
- esac
- done
-
- userID="ssh://${hostName}"
-
- # prompt about key expiration if not specified
- keyExpire=$(get_gpg_expiration "$keyExpire")
-
- # set key parameters
- keyParameters=\
-"Key-Type: $keyType
-Key-Length: $keyLength
-Key-Usage: $keyUsage
-Name-Real: $userID
-Expire-Date: $keyExpire"
-
- # add the revoker field if specified
- # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
- # FIXME: key is marked "sensitive"? is this appropriate?
- if [ "$revoker" ] ; then
- keyParameters=\
-"${keyParameters}
-Revoker: 1:${revoker} sensitive"
- fi
-
- echo "The following key parameters will be used for the host private key:"
- echo "$keyParameters"
-
- read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
- if [ ${OK/y/Y} != 'Y' ] ; then
- failure "aborting."
- fi
-
- # add commit command
- # must include blank line!
- keyParameters=\
-"${keyParameters}
-
-%commit
-%echo done"
-
- log verbose "generating host key..."
- echo "$keyParameters" | gpg_host --batch --gen-key
-
- # find the key fingerprint of the newly generated key
- fingerprint=$(fingerprint_server_key)
-
- # export host ownertrust to authentication keyring
- log verbose "setting ultimate owner trust for host key..."
- echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
-
- # translate the private key to ssh format, and export to a file
- # for sshs usage.
- # NOTE: assumes that the primary key is the proper key to use
- (umask 077 && \
- gpg_host --export-secret-key "$fingerprint" | \
- openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
- log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
- ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
- log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
- gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
- log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-
- # show info about new key
- show_server_key
-}
-
-# extend the lifetime of a host key:
-extend_key() {
- local fpr=$(fingerprint_server_key)
- local extendTo="$1"
-
- # get the new expiration date
- extendTo=$(get_gpg_expiration "$extendTo")
-
- gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
-expire
-$extendTo
-save
-EOF
-
- echo
- echo "NOTE: Host key expiration date adjusted, but not yet published."
- echo "Run '$PGRM publish-key' to publish the new expiration date."
-}
-
-# add hostname user ID to server key
-add_hostname() {
- local userID
- local fingerprint
- local tmpuidMatch
- local line
- local adduidCommand
-
- if [ -z "$1" ] ; then
- failure "You must specify a hostname to add."
- fi
-
- userID="ssh://${1}"
-
- fingerprint=$(fingerprint_server_key)
-
- # match to only ultimately trusted user IDs
- tmpuidMatch="u:$(echo $userID | gpg_escape)"
-
- # find the index of the requsted user ID
- # NOTE: this is based on circumstantial evidence that the order of
- # this output is the appropriate index
- if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
- | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
- failure "Host userID '$userID' already exists."
- fi
-
- echo "The following user ID will be added to the host key:"
- echo " $userID"
- read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
- if [ ${OK/y/Y} != 'Y' ] ; then
- failure "User ID not added."
- fi
-
- # edit-key script command to add user ID
- adduidCommand=$(cat <<EOF
-adduid
-$userID
-
-
-save
-EOF
-)
-
- # execute edit-key script
- if echo "$adduidCommand" | \
- gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
- # update the trustdb for the authentication keyring
- gpg_authentication "--check-trustdb"
-
- show_server_key
-
- echo
- echo "NOTE: User ID added to key, but key not published."
- echo "Run '$PGRM publish-key' to publish the new user ID."
- else
- failure "Problem adding user ID."
- fi
-}
-
-# revoke hostname user ID to server key
-revoke_hostname() {
- local userID
- local fingerprint
- local tmpuidMatch
- local line
- local uidIndex
- local message
- local revuidCommand
-
- if [ -z "$1" ] ; then
- failure "You must specify a hostname to revoke."
- fi
-
- echo "WARNING: There is a known bug in this function."
- echo "This function has been known to occasionally revoke the wrong user ID."
- echo "Please see the following bug report for more information:"
- echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
- read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
- if [ ${OK/y/Y} != 'Y' ] ; then
- failure "aborting."
- fi
-
- userID="ssh://${1}"
-
- fingerprint=$(fingerprint_server_key)
-
- # match to only ultimately trusted user IDs
- tmpuidMatch="u:$(echo $userID | gpg_escape)"
-
- # find the index of the requsted user ID
- # NOTE: this is based on circumstantial evidence that the order of
- # this output is the appropriate index
- if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
- | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
- uidIndex=${line%%:*}
- else
- failure "No non-revoked user ID '$userID' is found."
- fi
-
- echo "The following host key user ID will be revoked:"
- echo " $userID"
- read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
- if [ ${OK/y/Y} != 'Y' ] ; then
- failure "User ID not revoked."
- fi
-
- message="Hostname removed by monkeysphere-server $DATE"
-
- # edit-key script command to revoke user ID
- revuidCommand=$(cat <<EOF
-$uidIndex
-revuid
-y
-4
-$message
-
-y
-save
-EOF
- )
-
- # execute edit-key script
- if echo "$revuidCommand" | \
- gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
- # update the trustdb for the authentication keyring
- gpg_authentication "--check-trustdb"
-
- show_server_key
-
- echo
- echo "NOTE: User ID revoked, but revocation not published."
- echo "Run '$PGRM publish-key' to publish the revocation."
- else
- failure "Problem revoking user ID."
- fi
-}
-
-# add a revoker to the host key
-add_revoker() {
- # FIXME: implement!
- failure "not implemented yet!"
-}
-
-# revoke the host key
-revoke_key() {
- # FIXME: implement!
- failure "not implemented yet!"
-}
-
-# publish server key to keyserver
-publish_server_key() {
- read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
- if [ ${OK/y/Y} != 'Y' ] ; then
- failure "key not published."
- fi
-
- # find the key fingerprint
- fingerprint=$(fingerprint_server_key)
-
- # publish host key
- gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
-}
-
-
-diagnostics() {
-# * check on the status and validity of the key and public certificates
- local seckey
- local keysfound
- local curdate
- local warnwindow
- local warndate
- local create
- local expire
- local uid
- local fingerprint
- local badhostkeys
- local sshd_config
- local problemsfound=0
-
- # FIXME: what's the correct, cross-platform answer?
- sshd_config=/etc/ssh/sshd_config
- seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
- keysfound=$(echo "$seckey" | grep -c ^sec:)
- curdate=$(date +%s)
- # warn when anything is 2 months away from expiration
- warnwindow='2 months'
- warndate=$(advance_date $warnwindow +%s)
-
- if ! id monkeysphere >/dev/null ; then
- echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
- problemsfound=$(($problemsfound+1))
- fi
-
- if ! [ -d "$SYSDATADIR" ] ; then
- echo "! no $SYSDATADIR directory found. Please create it."
- problemsfound=$(($problemsfound+1))
- fi
-
- echo "Checking host GPG key..."
- if (( "$keysfound" < 1 )); then
- echo "! No host key found."
- echo " - Recommendation: run 'monkeysphere-server gen-key'"
- problemsfound=$(($problemsfound+1))
- elif (( "$keysfound" > 1 )); then
- echo "! More than one host key found?"
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- else
- create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
- expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
- fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
- # check for key expiration:
- if [ "$expire" ]; then
- if (( "$expire" < "$curdate" )); then
- echo "! Host key is expired."
- echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
- problemsfound=$(($problemsfound+1))
- elif (( "$expire" < "$warndate" )); then
- echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
- echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
- problemsfound=$(($problemsfound+1))
- fi
- fi
-
- # and weirdnesses:
- if [ "$create" ] && (( "$create" > "$curdate" )); then
- echo "! Host key was created in the future(?!). Is your clock correct?"
- echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
- problemsfound=$(($problemsfound+1))
- fi
-
- # check for UserID expiration:
- echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
- while IFS=: read create expire uid ; do
- # FIXME: should we be doing any checking on the form
- # of the User ID? Should we be unmangling it somehow?
-
- if [ "$create" ] && (( "$create" > "$curdate" )); then
- echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
- echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
- problemsfound=$(($problemsfound+1))
- fi
- if [ "$expire" ] ; then
- if (( "$expire" < "$curdate" )); then
- echo "! User ID '$uid' is expired."
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- elif (( "$expire" < "$warndate" )); then
- echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
- # FIXME: recommend a way to resolve this
- problemsfound=$(($problemsfound+1))
- fi
- fi
- done
-
-# FIXME: verify that the host key is properly published to the
-# keyservers (do this with the non-privileged user)
-
-# FIXME: check that there are valid, non-expired certifying signatures
-# attached to the host key after fetching from the public keyserver
-# (do this with the non-privileged user as well)
-
-# FIXME: propose adding a revoker to the host key if none exist (do we
-# have a way to do that after key generation?)
-
- # Ensure that the ssh_host_rsa_key file is present and non-empty:
- echo
- echo "Checking host SSH key..."
- if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
- echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
- problemsfound=$(($problemsfound+1))
- else
- if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
- echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
- problemsfound=$(($problemsfound+1))
- fi
-
- # propose changes needed for sshd_config (if any)
- if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
- echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
- echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
- problemsfound=$(($problemsfound+1))
- fi
- if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
- echo "! $sshd_config refers to some non-monkeysphere host keys:"
- echo "$badhostkeys"
- echo " - Recommendation: remove the above HostKey lines from $sshd_config"
- problemsfound=$(($problemsfound+1))
- fi
-
- # FIXME: test (with ssh-keyscan?) that the running ssh
- # daemon is actually offering the monkeysphere host key.
-
- fi
- fi
-
-# FIXME: look at the ownership/privileges of the various keyrings,
-# directories housing them, etc (what should those values be? can
-# we make them as minimal as possible?)
-
-# FIXME: look to see that the ownertrust rules are set properly on the
-# authentication keyring
-
-# FIXME: make sure that at least one identity certifier exists
-
-# FIXME: look at the timestamps on the monkeysphere-generated
-# authorized_keys files -- warn if they seem out-of-date.
-
-# FIXME: check for a cronjob that updates monkeysphere-generated
-# authorized_keys?
-
- echo
- echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
- # Ensure that User ID authentication is enabled:
- if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
- echo "! $sshd_config does not point to monkeysphere authorized keys."
- echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
- problemsfound=$(($problemsfound+1))
- fi
- if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
- echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
- echo "$badauthorizedkeys"
- echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
- problemsfound=$(($problemsfound+1))
- fi
-
- if [ "$problemsfound" -gt 0 ]; then
- echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
- echo " monkeysphere-server diagnostics"
- else
- echo "Everything seems to be in order!"
- fi
-}
-
-# retrieve key from web of trust, import it into the host keyring, and
-# ltsign the key in the host keyring so that it may certify other keys
-add_certifier() {
- local domain
- local trust
- local depth
- local keyID
- local fingerprint
- local ltsignCommand
- local trustval
-
- # set default values for trust depth and domain
- domain=
- trust=full
- depth=1
-
- # get options
- while true ; do
- case "$1" in
- -n|--domain)
- domain="$2"
- shift 2
- ;;
- -t|--trust)
- trust="$2"
- shift 2
- ;;
- -d|--depth)
- depth="$2"
- shift 2
- ;;
- *)
- if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
- failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
- fi
- break
- ;;
- esac
- done
-
- keyID="$1"
- if [ -z "$keyID" ] ; then
- failure "You must specify the key ID of a key to add, or specify a file to read the key from."
- fi
- if [ -f "$keyID" ] ; then
- echo "Reading key from file '$keyID':"
- importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
- # FIXME: if this is tried when the key database is not
- # up-to-date, i got these errors (using set -x):
-
-# ++ su -m monkeysphere -c '\''gpg --import'\''
-# Warning: using insecure memory!
-# gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
-# gpg: Total number processed: 1
-# gpg: imported: 1 (RSA: 1)
-# gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
-# gpg: failed to rebuild keyring cache: Permission denied
-# gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
-# gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
-# gpg: next trustdb check due at 2009-01-10'
-# + failure 'could not read key from '\''/root/dkg.gpg'\'''
-# + echo 'could not read key from '\''/root/dkg.gpg'\'''
-
- keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
- if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
- failure "Expected there to be a single gpg key in the file."
- fi
- else
- # get the key from the key server
- gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
- fi
-
- export keyID
-
-
- # get the full fingerprint of a key ID
- fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
- grep '^fpr:' | grep "$keyID" | cut -d: -f10)
-
- if [ -z "$fingerprint" ] ; then
- failure "Key '$keyID' not found."
- fi
-
- echo
- echo "key found:"
- gpg_authentication "--fingerprint 0x${fingerprint}!"
-
- echo "Are you sure you want to add the above key as a"
- read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
- if [ "${OK/y/Y}" != 'Y' ] ; then
- failure "Identity certifier not added."
- fi
-
- # export the key to the host keyring
- gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
-
- if [ "$trust" = marginal ]; then
- trustval=1
- elif [ "$trust" = full ]; then
- trustval=2
- else
- failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
- fi
-
- # ltsign command
- # NOTE: *all* user IDs will be ltsigned
- ltsignCommand=$(cat <<EOF
-ltsign
-y
-$trustval
-$depth
-$domain
-y
-save
-EOF
- )
-
- # ltsign the key
- if echo "$ltsignCommand" | \
- gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
- # update the trustdb for the authentication keyring
- gpg_authentication "--check-trustdb"
-
- echo
- echo "Identity certifier added."
- else
- failure "Problem adding identify certifier."
- fi
-}
-
-# delete a certifiers key from the host keyring
-remove_certifier() {
- local keyID
- local fingerprint
-
- keyID="$1"
- if [ -z "$keyID" ] ; then
- failure "You must specify the key ID of a key to remove."
- fi
-
- if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
- read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
- if [ "${OK/y/Y}" != 'Y' ] ; then
- failure "Identity certifier not removed."
- fi
- else
- failure
- fi
-
- # delete the requested key
- if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
- # delete key from host keyring as well
- gpg_host --delete-key --batch --yes "0x${keyID}!"
-
- # update the trustdb for the authentication keyring
- gpg_authentication "--check-trustdb"
-
- echo
- echo "Identity certifier removed."
- else
- failure "Problem removing identity certifier."
- fi
-}
-
-# list the host certifiers
-list_certifiers() {
- local keys
- local key
-
- # find trusted keys in authentication keychain
- keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
- grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
-
- # output keys
- for key in $keys ; do
- gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
- done
-}
-
-# issue command to gpg-authentication keyring
-gpg_authentication_cmd() {
- gpg_authentication "$@"
-}
-
-########################################################################
-# MAIN
-########################################################################
-
-# unset variables that should be defined only in config file
-unset KEYSERVER
-unset AUTHORIZED_USER_IDS
-unset RAW_AUTHORIZED_KEYS
-unset MONKEYSPHERE_USER
-
-# load configuration file
-[ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
-
-# set empty config variable with ones from the environment, or with
-# defaults
-LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
-KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
-AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
-RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
-MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
-
-# other variables
-CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
-REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
-GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
-GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
-
-# export variables needed in su invocation
-export DATE
-export MODE
-export MONKEYSPHERE_USER
-export LOG_LEVEL
-export KEYSERVER
-export CHECK_KEYSERVER
-export REQUIRED_USER_KEY_CAPABILITY
-export GNUPGHOME_HOST
-export GNUPGHOME_AUTHENTICATION
-export GNUPGHOME
-
-# get subcommand
-COMMAND="$1"
-[ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
-shift
-
-case $COMMAND in
- 'update-users'|'update-user'|'u')
- check_user
- check_host_keyring
- update_users "$@"
- ;;
-
- 'import-key'|'i')
- check_user
- import_key "$@"
- ;;
-
- 'gen-key'|'g')
- check_user
- gen_key "$@"
- ;;
-
- 'extend-key'|'e')
- check_user
- check_host_keyring
- extend_key "$@"
- ;;
-
- 'add-hostname'|'add-name'|'n+')
- check_user
- check_host_keyring
- add_hostname "$@"
- ;;
-
- 'revoke-hostname'|'revoke-name'|'n-')
- check_user
- check_host_keyring
- revoke_hostname "$@"
- ;;
-
- 'add-revoker'|'o')
- check_user
- check_host_keyring
- add_revoker "$@"
- ;;
-
- 'revoke-key'|'r')
- check_user
- check_host_keyring
- revoke_key "$@"
- ;;
-
- 'show-key'|'show'|'s')
- show_server_key
- ;;
-
- 'publish-key'|'publish'|'p')
- check_user
- check_host_keyring
- publish_server_key
- ;;
-
- 'diagnostics'|'d')
- check_user
- diagnostics
- ;;
-
- 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
- check_user
- check_host_keyring
- add_certifier "$@"
- ;;
-
- 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
- check_user
- check_host_keyring
- remove_certifier "$@"
- ;;
-
- 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
- check_user
- check_host_keyring
- list_certifiers "$@"
- ;;
-
- 'gpg-authentication-cmd')
- check_user
- gpg_authentication_cmd "$@"
- ;;
-
- 'version'|'v')
- echo "$VERSION"
- ;;
-
- '--help'|'help'|'-h'|'h'|'?')
- usage
- ;;
-
- *)
- failure "Unknown command: '$COMMAND'
-Type '$PGRM help' for usage."
- ;;
-esac
-
-exit "$RETURN"
+++ /dev/null
-#!/usr/bin/env bash
-
-# monkeysphere-ssh-proxycommand: MonkeySphere ssh ProxyCommand hook
-#
-# The monkeysphere scripts are written by:
-# Jameson Rollins <jrollins@fifthhorseman.net>
-#
-# They are Copyright 2008, and are all released under the GPL, version 3
-# or later.
-
-# This is meant to be run as an ssh ProxyCommand to initiate a
-# monkeysphere known_hosts update before an ssh connection to host is
-# established. Can be added to ~/.ssh/config as follows:
-# ProxyCommand monkeysphere-ssh-proxycommand %h %p
-
-########################################################################
-PGRM=$(basename $0)
-
-SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
-export SYSSHAREDIR
-. "${SYSSHAREDIR}/common" || exit 1
-
-########################################################################
-# FUNCTIONS
-########################################################################
-
-usage() {
- cat <<EOF >&2
-usage: ssh -o ProxyCommand="$(basename $0) %h %p" ...
-EOF
-}
-
-log() {
- echo "$@" >&2
-}
-
-output_no_valid_key() {
- local sshKeyOffered
- local userID
- local type
- local validity
- local keyid
- local uidfpr
- local usage
- local sshKeyGPG
- local tmpkey
- local sshFingerprint
- local gpgSigOut
-
- userID="ssh://${HOSTP}"
-
- log "-------------------- Monkeysphere warning -------------------"
- log "Monkeysphere found OpenPGP keys for this hostname, but none had full validity."
-
- # retrieve the actual ssh key
- sshKeyOffered=$(ssh-keyscan -t rsa -p "$PORT" "$HOST" 2>/dev/null | awk '{ print $2, $3 }')
- # FIXME: should we do any checks for failed keyscans, eg. host not
- # found?
-
- # get the gpg info for userid
- gpgOut=$(gpg --list-key --fixed-list-mode --with-colon \
- --with-fingerprint --with-fingerprint \
- ="$userID" 2>/dev/null)
-
- # find all 'pub' and 'sub' lines in the gpg output, which each
- # represent a retrieved key for the user ID
- echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
- while IFS=: read -r type validity keyid uidfpr usage ; do
- case $type in
- 'pub'|'sub')
- # get the ssh key of the gpg key
- sshKeyGPG=$(gpg2ssh "$keyid")
-
- # if one of keys found matches the one offered by the
- # host, then output info
- if [ "$sshKeyGPG" = "$sshKeyOffered" ] ; then
- log "An OpenPGP key matching the ssh key offered by the host was found:"
- log
-
- # do some crazy "Here Strings" redirection to get the key to
- # ssh-keygen, since it doesn't read from stdin cleanly
- sshFingerprint=$(ssh-keygen -l -f /dev/stdin \
- <<<$(echo "$sshKeyGPG") | \
- awk '{ print $2 }')
-
- # get the sigs for the matching key
- gpgSigOut=$(gpg --check-sigs \
- --list-options show-uid-validity \
- "$keyid")
-
- # output the sigs, but only those on the user ID
- # we are looking for
- echo "$gpgSigOut" | awk '
-{
-if (match($0,"^pub")) { print; }
-if (match($0,"^uid")) { ok=0; }
-if (match($0,"^uid.*'$userID'$")) { ok=1; print; }
-if (ok) { if (match($0,"^sig")) { print; } }
-}
-' >&2
- log
-
- # output the other user IDs for reference
- if (echo "$gpgSigOut" | grep "^uid" | grep -v -q "$userID") ; then
- log "Other user IDs on this key:"
- echo "$gpgSigOut" | grep "^uid" | grep -v "$userID" >&2
- log
- fi
-
- # output ssh fingerprint
- log "RSA key fingerprint is ${sshFingerprint}."
-
- # this whole process is in a "while read"
- # subshell. the only way to get information out
- # of the subshell is to change the return code.
- # therefore we return 1 here to indicate that a
- # matching gpg key was found for the ssh key
- # offered by the host
- return 1
- fi
- ;;
- esac
- done
-
- # if no key match was made (and the "while read" subshell returned
- # 1) output how many keys were found
- if (($? != 1)) ; then
- log "None of the found keys matched the key offered by the host."
- log "Run the following command for more info about the found keys:"
- log "gpg --check-sigs --list-options show-uid-validity =${userID}"
- # FIXME: should we do anything extra here if the retrieved
- # host key is actually in the known_hosts file and the ssh
- # connection will succeed? Should the user be warned?
- # prompted?
- fi
-
- log "-------------------- ssh continues below --------------------"
-}
-
-########################################################################
-
-# export the monkeysphere log level
-export MONKEYSPHERE_LOG_LEVEL
-
-if [ "$1" = '--no-connect' ] ; then
- NO_CONNECT='true'
- shift 1
-fi
-
-HOST="$1"
-PORT="$2"
-
-if [ -z "$HOST" ] ; then
- log "Host not specified."
- usage
- exit 255
-fi
-if [ -z "$PORT" ] ; then
- PORT=22
-fi
-
-# set the host URI
-if [ "$PORT" != '22' ] ; then
- HOSTP="${HOST}:${PORT}"
-else
- HOSTP="${HOST}"
-fi
-URI="ssh://${HOSTP}"
-
-# specify keyserver checking. the behavior of this proxy command is
-# intentionally different than that of running monkeyesphere normally,
-# and keyserver checking is intentionally done under certain
-# circumstances. This can be overridden by setting the
-# MONKEYSPHERE_CHECK_KEYSERVER environment variable.
-
-# if the host is in the gpg keyring...
-if gpg --list-key ="${URI}" 2>&1 >/dev/null ; then
- # do not check the keyserver
- CHECK_KEYSERVER="false"
-
-# if the host is NOT in the keyring...
-else
- # if the host key is found in the known_hosts file...
- # FIXME: this only works for default known_hosts location
- hostKey=$(ssh-keygen -F "$HOST" 2>/dev/null)
-
- if [ "$hostKey" ] ; then
- # do not check the keyserver
- # FIXME: more nuanced checking should be done here to properly
- # take into consideration hosts that join monkeysphere by
- # converting an existing and known ssh key
- CHECK_KEYSERVER="false"
-
- # if the host key is not found in the known_hosts file...
- else
- # check the keyserver
- CHECK_KEYSERVER="true"
- fi
-fi
-# set and export the variable for use by monkeysphere
-MONKEYSPHERE_CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="$CHECK_KEYSERVER"}
-export MONKEYSPHERE_CHECK_KEYSERVER
-
-# update the known_hosts file for the host
-monkeysphere update-known_hosts "$HOSTP"
-
-# output on depending on the return of the update-known_hosts
-# subcommand, which is (ultimately) the return code of the
-# update_known_hosts function in common
-case $? in
- 0)
- # acceptable host key found so continue to ssh
- true
- ;;
- 1)
- # no hosts at all found so also continue (drop through to
- # regular ssh host verification)
- true
- ;;
- 2)
- # at least one *bad* host key (and no good host keys) was
- # found, so output some usefull information
- output_no_valid_key
- ;;
- *)
- # anything else drop through
- true
- ;;
-esac
-
-# FIXME: what about the case where monkeysphere successfully finds a
-# valid key for the host and adds it to the known_hosts file, but a
-# different non-monkeysphere key for the host already exists in the
-# known_hosts, and it is this non-ms key that is offered by the host?
-# monkeysphere will succeed, and the ssh connection will succeed, and
-# the user will be left with the impression that they are dealing with
-# a OpenPGP/PKI host key when in fact they are not. should we use
-# ssh-keyscan to compare the keys first?
-
-# exec a netcat passthrough to host for the ssh connection
-if [ -z "$NO_CONNECT" ] ; then
- if (which nc 2>/dev/null >/dev/null); then
- exec nc "$HOST" "$PORT"
- elif (which socat 2>/dev/null >/dev/null); then
- exec socat STDIO "TCP:$HOST:$PORT"
- else
- echo "Neither netcat nor socat found -- could not complete monkeysphere-ssh-proxycommand connection to $HOST:$PORT" >&2
- exit 255
- fi
-fi
--- /dev/null
+#!/usr/bin/env bash
+
+# monkeysphere-ssh-proxycommand: MonkeySphere ssh ProxyCommand hook
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@fifthhorseman.net>
+#
+# They are Copyright 2008, and are all released under the GPL, version 3
+# or later.
+
+# This is meant to be run as an ssh ProxyCommand to initiate a
+# monkeysphere known_hosts update before an ssh connection to host is
+# established. Can be added to ~/.ssh/config as follows:
+# ProxyCommand monkeysphere-ssh-proxycommand %h %p
+
+########################################################################
+PGRM=$(basename $0)
+
+SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
+export SYSSHAREDIR
+. "${SYSSHAREDIR}/common" || exit 1
+
+########################################################################
+# FUNCTIONS
+########################################################################
+
+usage() {
+ cat <<EOF >&2
+usage: ssh -o ProxyCommand="$(basename $0) %h %p" ...
+EOF
+}
+
+log() {
+ echo "$@" >&2
+}
+
+output_no_valid_key() {
+ local sshKeyOffered
+ local userID
+ local type
+ local validity
+ local keyid
+ local uidfpr
+ local usage
+ local sshKeyGPG
+ local tmpkey
+ local sshFingerprint
+ local gpgSigOut
+
+ userID="ssh://${HOSTP}"
+
+ log "-------------------- Monkeysphere warning -------------------"
+ log "Monkeysphere found OpenPGP keys for this hostname, but none had full validity."
+
+ # retrieve the actual ssh key
+ sshKeyOffered=$(ssh-keyscan -t rsa -p "$PORT" "$HOST" 2>/dev/null | awk '{ print $2, $3 }')
+ # FIXME: should we do any checks for failed keyscans, eg. host not
+ # found?
+
+ # get the gpg info for userid
+ gpgOut=$(gpg --list-key --fixed-list-mode --with-colon \
+ --with-fingerprint --with-fingerprint \
+ ="$userID" 2>/dev/null)
+
+ # find all 'pub' and 'sub' lines in the gpg output, which each
+ # represent a retrieved key for the user ID
+ echo "$gpgOut" | cut -d: -f1,2,5,10,12 | \
+ while IFS=: read -r type validity keyid uidfpr usage ; do
+ case $type in
+ 'pub'|'sub')
+ # get the ssh key of the gpg key
+ sshKeyGPG=$(gpg2ssh "$keyid")
+
+ # if one of keys found matches the one offered by the
+ # host, then output info
+ if [ "$sshKeyGPG" = "$sshKeyOffered" ] ; then
+ log "An OpenPGP key matching the ssh key offered by the host was found:"
+ log
+
+ # do some crazy "Here Strings" redirection to get the key to
+ # ssh-keygen, since it doesn't read from stdin cleanly
+ sshFingerprint=$(ssh-keygen -l -f /dev/stdin \
+ <<<$(echo "$sshKeyGPG") | \
+ awk '{ print $2 }')
+
+ # get the sigs for the matching key
+ gpgSigOut=$(gpg --check-sigs \
+ --list-options show-uid-validity \
+ "$keyid")
+
+ # output the sigs, but only those on the user ID
+ # we are looking for
+ echo "$gpgSigOut" | awk '
+{
+if (match($0,"^pub")) { print; }
+if (match($0,"^uid")) { ok=0; }
+if (match($0,"^uid.*'$userID'$")) { ok=1; print; }
+if (ok) { if (match($0,"^sig")) { print; } }
+}
+' >&2
+ log
+
+ # output the other user IDs for reference
+ if (echo "$gpgSigOut" | grep "^uid" | grep -v -q "$userID") ; then
+ log "Other user IDs on this key:"
+ echo "$gpgSigOut" | grep "^uid" | grep -v "$userID" >&2
+ log
+ fi
+
+ # output ssh fingerprint
+ log "RSA key fingerprint is ${sshFingerprint}."
+
+ # this whole process is in a "while read"
+ # subshell. the only way to get information out
+ # of the subshell is to change the return code.
+ # therefore we return 1 here to indicate that a
+ # matching gpg key was found for the ssh key
+ # offered by the host
+ return 1
+ fi
+ ;;
+ esac
+ done
+
+ # if no key match was made (and the "while read" subshell returned
+ # 1) output how many keys were found
+ if (($? != 1)) ; then
+ log "None of the found keys matched the key offered by the host."
+ log "Run the following command for more info about the found keys:"
+ log "gpg --check-sigs --list-options show-uid-validity =${userID}"
+ # FIXME: should we do anything extra here if the retrieved
+ # host key is actually in the known_hosts file and the ssh
+ # connection will succeed? Should the user be warned?
+ # prompted?
+ fi
+
+ log "-------------------- ssh continues below --------------------"
+}
+
+########################################################################
+
+# export the monkeysphere log level
+export MONKEYSPHERE_LOG_LEVEL
+
+if [ "$1" = '--no-connect' ] ; then
+ NO_CONNECT='true'
+ shift 1
+fi
+
+HOST="$1"
+PORT="$2"
+
+if [ -z "$HOST" ] ; then
+ log "Host not specified."
+ usage
+ exit 255
+fi
+if [ -z "$PORT" ] ; then
+ PORT=22
+fi
+
+# set the host URI
+if [ "$PORT" != '22' ] ; then
+ HOSTP="${HOST}:${PORT}"
+else
+ HOSTP="${HOST}"
+fi
+URI="ssh://${HOSTP}"
+
+# specify keyserver checking. the behavior of this proxy command is
+# intentionally different than that of running monkeyesphere normally,
+# and keyserver checking is intentionally done under certain
+# circumstances. This can be overridden by setting the
+# MONKEYSPHERE_CHECK_KEYSERVER environment variable.
+
+# if the host is in the gpg keyring...
+if gpg --list-key ="${URI}" 2>&1 >/dev/null ; then
+ # do not check the keyserver
+ CHECK_KEYSERVER="false"
+
+# if the host is NOT in the keyring...
+else
+ # if the host key is found in the known_hosts file...
+ # FIXME: this only works for default known_hosts location
+ hostKey=$(ssh-keygen -F "$HOST" 2>/dev/null)
+
+ if [ "$hostKey" ] ; then
+ # do not check the keyserver
+ # FIXME: more nuanced checking should be done here to properly
+ # take into consideration hosts that join monkeysphere by
+ # converting an existing and known ssh key
+ CHECK_KEYSERVER="false"
+
+ # if the host key is not found in the known_hosts file...
+ else
+ # check the keyserver
+ CHECK_KEYSERVER="true"
+ fi
+fi
+# set and export the variable for use by monkeysphere
+MONKEYSPHERE_CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="$CHECK_KEYSERVER"}
+export MONKEYSPHERE_CHECK_KEYSERVER
+
+# update the known_hosts file for the host
+monkeysphere update-known_hosts "$HOSTP"
+
+# output on depending on the return of the update-known_hosts
+# subcommand, which is (ultimately) the return code of the
+# update_known_hosts function in common
+case $? in
+ 0)
+ # acceptable host key found so continue to ssh
+ true
+ ;;
+ 1)
+ # no hosts at all found so also continue (drop through to
+ # regular ssh host verification)
+ true
+ ;;
+ 2)
+ # at least one *bad* host key (and no good host keys) was
+ # found, so output some usefull information
+ output_no_valid_key
+ ;;
+ *)
+ # anything else drop through
+ true
+ ;;
+esac
+
+# FIXME: what about the case where monkeysphere successfully finds a
+# valid key for the host and adds it to the known_hosts file, but a
+# different non-monkeysphere key for the host already exists in the
+# known_hosts, and it is this non-ms key that is offered by the host?
+# monkeysphere will succeed, and the ssh connection will succeed, and
+# the user will be left with the impression that they are dealing with
+# a OpenPGP/PKI host key when in fact they are not. should we use
+# ssh-keyscan to compare the keys first?
+
+# exec a netcat passthrough to host for the ssh connection
+if [ -z "$NO_CONNECT" ] ; then
+ if (which nc 2>/dev/null >/dev/null); then
+ exec nc "$HOST" "$PORT"
+ elif (which socat 2>/dev/null >/dev/null); then
+ exec socat STDIO "TCP:$HOST:$PORT"
+ else
+ echo "Neither netcat nor socat found -- could not complete monkeysphere-ssh-proxycommand connection to $HOST:$PORT" >&2
+ exit 255
+ fi
+fi
projects / monkeysphere.git / commitdiff