MonkeySphere server admin tool.
subcommands:
- update-users (u) [USER]... update user authorized_keys files
-
- gen-key (g) [HOSTNAME] generate gpg key for the server
- -l|--length BITS key length in bits (2048)
- -e|--expire EXPIRE date to expire
- -r|--revoker FINGERPRINT add a revoker
- show-fingerprint (f) show server's host key fingerprint
- publish-key (p) publish server's host key to keyserver
-
- add-identity-certifier (a) KEYID import and tsign a certification key
- -n|--domain DOMAIN domain of certifier ()
- -t|--trust TRUST trust level of certifier (2)
- -d|--depth DEPTH trust depth for certifier (1)
- remove-identity-certifier (r) KEYID remove a certification key
- list-identity-certifiers (l) list certification keys
-
- gpg-authentication-cmd execute a gpg command to the
- authentication keyring as the
- monkeysphere user
-
- help (h,?) this help
-
+ update-users (u) [USER]... update user authorized_keys files
+
+ gen-key (g) [HOSTNAME] generate gpg key for the server
+ -l|--length BITS key length in bits (2048)
+ -e|--expire EXPIRE date to expire
+ -r|--revoker FINGERPRINT add a revoker
+ show-fingerprint (f) show server's host key fingerprint
+ publish-key (p) publish server's host key to keyserver
+ diagnostics (d) report on the server's monkeysphere status
+
+ add-identity-certifier (a) KEYID import and tsign a certification key
+ -n|--domain DOMAIN limit ID certifications to IDs in DOMAIN
+ -t|--trust TRUST trust level of certifier (full)
+ -d|--depth DEPTH trust depth for certifier (1)
+ remove-identity-certifier (r) KEYID remove a certification key
+ list-identity-certifiers (l) list certification keys
+
+ gpg-authentication-cmd CMD gnupg-authentication command
+
+ help (h,?) this help
EOF
}
log "----- user: $uname -----"
+ # exit if the authorized_user_ids file is empty
if ! check_key_file_permissions "$uname" "$AUTHORIZED_USER_IDS" ; then
- log "Improper permissions on authorized_user_ids file."
+ log "Improper permissions on authorized_user_ids file path."
continue
fi
+ # check permissions on the authorized_keys file path
if ! check_key_file_permissions "$uname" "$RAW_AUTHORIZED_KEYS" ; then
- log "Improper permissions on authorized_keys file."
+ log "Improper permissions on authorized_keys file path path."
continue
fi
chgrp $(getent passwd "$uname" | cut -f4 -d:) "$AUTHORIZED_KEYS"
chmod g+r "$AUTHORIZED_KEYS"
- # if the resulting authorized_keys file is not empty, move
- # it into place
+ # move the resulting authorized_keys file into place
mv -f "$AUTHORIZED_KEYS" "${VARLIB}/authorized_keys/${uname}"
# destroy temporary directory
revoker=
# get options
- TEMP=$(getopt -o l:e:r: -l length:,expire:,revoker: -n "$PGRM" -- "$@")
+ TEMP=$(getopt -o e:l:r -l expire:,length:,revoker: -n "$PGRM" -- "$@")
if [ $? != 0 ] ; then
exit 1
fingerprint=$(gpg_host --list-key --with-colons --with-fingerprint "=${userID}" | \
grep '^fpr:' | head -1 | cut -d: -f10)
+ # export host ownertrust to authentication keyring
+ log "setting ultimate owner trust for server key..."
+ echo "${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
# publish server key to keyserver
publish_server_key() {
- read -p "really publish key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
+ read -p "Really publish key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
if [ ${OK/y/Y} != 'Y' ] ; then
failure "aborting."
fi
# FIXME: need to figure out better way to identify host key
# dummy command so as not to publish fakes keys during testing
# eventually:
- #gpg_authentication "--keyring $GNUPGHOME_HOST/pubring.gpg --keyserver $KEYSERVER --send-keys $(hostname -f)"
- failure "NOT PUBLISHED (to avoid permanent publication errors during monkeysphere development)."
+ #gpg_authentication "--keyserver $KEYSERVER --send-keys $(hostname -f)"
+ echo "NOT PUBLISHED (to avoid permanent publication errors during monkeysphere development)."
+ echo "The following command should publish the key:"
+ echo "monkeysphere-server gpg-authentication-cmd '--keyserver $KEYSERVER --send-keys $(hostname -f)'"
+ exit 255
+}
+
+diagnostics() {
+# * check on the status and validity of the key and public certificates
+ local seckey
+ local keysfound
+ local curdate
+ local warnwindow
+ local warndate
+ local create
+ local expire
+ local uid
+ local fingerprint
+ local badhostkeys
+
+ seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
+ keysfound=$(echo "$seckey" | grep -c ^sec:)
+ curdate=$(date +%s)
+ # warn when anything is 2 months away from expiration
+ warnwindow='2 months'
+ warndate=$(date +%s -d "$warnwindow")
+
+ echo "Checking host GPG key..."
+ if (( "$keysfound" < 1 )); then
+ echo "! No host key found."
+ echo " - Recommendation: run 'monkeysphere-server gen-key'"
+ elif (( "$keysfound" > 1 )); then
+ echo "! More than one host key found?"
+ # FIXME: recommend a way to resolve this
+ else
+ create=$(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."
+ # FIXME: recommend a way to resolve this other than re-keying?
+ elif (( "$expire" < "$warndate" )); then
+ echo "! Host key expires in less than $warnwindow:" $(date -d "$(( $expire - $curdate )) seconds" +%F)
+ # FIXME: recommend a way to resolve this?
+ fi
+ fi
+
+ # and weirdnesses:
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! Host key was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ fi
+
+ # check for UserID expiration:
+ echo "$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 ($(date +%F_%T)); use NTP?"
+ fi
+ if [ "$expire" ] ; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! User ID '$uid' is expired."
+ # FIXME: recommend a way to resolve this
+ elif (( "$expire" < "$warndate" )); then
+ echo "! User ID '$uid' expires in less than $warnwindow:" $(date -d "$(( $expire - $curdate )) seconds" +%F)
+ # FIXME: recommend a way to resolve this
+ fi
+ fi
+ done
+
+# FIXME: verify that the host key is properly published to the
+# keyservers (do this with the non-privileged user)
+
+# FIXME: check that there are valid, non-expired certifying signatures
+# attached to the host key after fetching from the public keyserver
+# (do this with the non-privileged user as well)
+
+# FIXME: propose adding a revoker to the host key if none exist (do we
+# have a way to do that after key generation?)
+
+ # Ensure that the ssh_host_rsa_key file is present and non-empty:
+ echo "Checking host SSH key..."
+ if [ ! -s "${VARLIB}/ssh_host_rsa_key" ] ; then
+ echo "! The host key as prepared for SSH (${VARLIB}/ssh_host_rsa_key) is missing or empty."
+ else
+ if [ $(stat -c '%a' "${VARLIB}/ssh_host_rsa_key") != 600 ] ; then
+ echo "! Permissions seem wrong for ${VARLIB}/ssh_host_rsa_key -- should be 0600."
+ fi
+
+ # propose changes needed for sshd_config (if any)
+ if ! grep -q "^HostKey ${VARLIB}/ssh_host_rsa_key$" /etc/ssh/sshd_config; then
+ echo "! /etc/ssh/sshd_config does not point to the monkeysphere host key (${VARLIB}/ssh_host_rsa_key)."
+ echo " - Recommendation: add a line to /etc/ssh/sshd_config: 'HostKey ${VARLIB}/ssh_host_rsa_key'"
+ fi
+ if badhostkeys=$(grep '^HostKey' | grep -q -v "^HostKey ${VARLIB}/ssh_host_rsa_key$") ; then
+ echo "! /etc/sshd_config refers to some non-monkeysphere host keys:"
+ echo "$badhostkeys"
+ echo "- Recommendation: remove the above HostKey lines from /etc/ssh/sshd_config"
+ fi
+ 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
+
}
# retrieve key from web of trust, import it into the host keyring, and
local keyID
local fingerprint
local ltsignCommand
+ local trustval
# set default values for trust depth and domain
domain=
- trust=2
+ trust=full
depth=1
# get options
done
keyID="$1"
+ if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to add."
+ fi
export keyID
- # export host ownertrust to authentication keyring
- gpg_host --export-ownertrust | gpg_authentication "--import-ownertrust"
-
# get the key from the key server
gpg_authentication "--keyserver $KEYSERVER --recv-key '$keyID'"
echo "key found:"
gpg_authentication "--fingerprint $fingerprint"
- read -p "Are you sure you want to add this key as a certifier of users on this system? (y/N) " OK; OK=${OK:-N}
+ echo "Are you sure you want to add this key as a certifier of"
+ read -p "users on this system? (y/N) " OK; OK=${OK:-N}
if [ "${OK/y/Y}" != 'Y' ] ; then
failure "aborting."
fi
# export the key to the host keyring
gpg_authentication "--export $keyID" | gpg_host --import
+ if [ "$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=$(cat <<EOF
ltsign
y
-$trust
+$trustval
$depth
$domain
y
save
EOF
-)
+ )
# ltsign the key
echo "$ltsignCommand" | gpg_host --quiet --command-fd 0 --edit-key "$fingerprint"
local fingerprint
keyID="$1"
+ if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to remove."
+ fi
# delete the requested key (with prompting)
gpg_host --delete-key "$keyID"
publish_server_key
;;
+ 'diagnostics'|'d')
+ diagnostics
+ ;;
+
'add-identity-certifier'|'add-certifier'|'a')
- if [ -z "$1" ] ; then
- failure "You must specify a key ID."
- fi
add_certifier "$1"
;;
'remove-identity-certifier'|'remove-certifier'|'r')
- if [ -z "$1" ] ; then
- failure "You must specify a key ID."
- fi
remove_certifier "$1"
;;
projects / monkeysphere.git / blobdiff