3 # monkeysphere-server: MonkeySphere server admin tool
5 # The monkeysphere scripts are written by:
6 # Jameson Rollins <jrollins@fifthhorseman.net>
7 # Jamie McClelland <jm@mayfirst.org>
8 # Daniel Kahn Gillmor <dkg@fifthhorseman.net>
10 # They are Copyright 2008, and are all released under the GPL, version 3
13 ########################################################################
16 SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
18 . "${SYSSHAREDIR}/common" || exit 1
20 SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
23 # UTC date in ISO 8601 format if needed
24 DATE=$(date -u '+%FT%T')
26 # unset some environment variables that could screw things up
32 ########################################################################
34 ########################################################################
38 usage: $PGRM <subcommand> [options] [args]
39 Monkeysphere server admin tool.
42 update-users (u) [USER]... update user authorized_keys files
44 gen-key (g) [NAME[:PORT]] generate gpg key for the server
45 --length (-l) BITS key length in bits (2048)
46 --expire (-e) EXPIRE date to expire
47 --revoker (-r) FINGERPRINT add a revoker
48 extend-key (e) EXPIRE extend expiration to EXPIRE
49 add-hostname (n+) NAME[:PORT] add hostname user ID to server key
50 revoke-hostname (n-) NAME[:PORT] revoke hostname user ID
51 show-key (s) output all server host key information
52 publish-key (p) publish server host key to keyserver
53 diagnostics (d) report on server monkeysphere status
55 add-id-certifier (c+) KEYID import and tsign a certification key
56 --domain (-n) DOMAIN limit ID certifications to DOMAIN
57 --trust (-t) TRUST trust level of certifier (full)
58 --depth (-d) DEPTH trust depth for certifier (1)
59 remove-id-certifier (c-) KEYID remove a certification key
60 list-id-certifiers (c) list certification keys
62 gpg-authentication-cmd CMD gnupg-authentication command
69 # function to run command as monkeysphere user
70 su_monkeysphere_user() {
71 # if the current user is the monkeysphere user, then just eval
73 if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
76 # otherwise su command as monkeysphere user
78 su "$MONKEYSPHERE_USER" -c "$@"
82 # function to interact with the host gnupg keyring
86 GNUPGHOME="$GNUPGHOME_HOST"
89 # NOTE: we supress this warning because we need the monkeysphere
90 # user to be able to read the host pubring. we realize this might
91 # be problematic, but it's the simplest solution, without too much
93 gpg --no-permission-warning "$@"
96 # always reset the permissions on the host pubring so that the
97 # monkeysphere user can read the trust signatures
98 chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg"
99 chmod g+r "${GNUPGHOME_HOST}/pubring.gpg"
104 # function to interact with the authentication gnupg keyring
105 # FIXME: this function requires basically accepts only a single
106 # argument because of problems with quote expansion. this needs to be
108 gpg_authentication() {
109 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
112 su_monkeysphere_user "gpg $@"
115 # output just key fingerprint
116 fingerprint_server_key() {
117 gpg_host --list-secret-keys --fingerprint \
118 --with-colons --fixed-list-mode 2> /dev/null | \
119 grep '^fpr:' | head -1 | cut -d: -f10
122 # output key information
127 fingerprint=$(fingerprint_server_key)
128 gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprint"
130 # dumping to a file named ' ' so that the ssh-keygen output
131 # doesn't claim any potentially bogus hostname(s):
132 tmpkey=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
133 gpg_authentication "--export $fingerprint" | openpgp2ssh "$fingerprint" 2>/dev/null > "$tmpkey/ "
134 echo -n "ssh fingerprint: "
135 (cd "$tmpkey" && ssh-keygen -l -f ' ' | awk '{ print $2 }')
137 echo -n "OpenPGP fingerprint: "
141 # update authorized_keys for users
144 # get users from command line
147 # or just look at all users if none specified
148 unames=$(getent passwd | cut -d: -f1)
152 MODE="authorized_keys"
155 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
157 # check to see if the gpg trust database has been initialized
158 if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
159 failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
162 # make sure the authorized_keys directory exists
163 mkdir -p "${SYSDATADIR}/authorized_keys"
166 for uname in $unames ; do
167 # check all specified users exist
168 if ! getent passwd "$uname" >/dev/null ; then
169 log error "----- unknown user '$uname' -----"
173 # set authorized_user_ids and raw authorized_keys variables,
174 # translating ssh-style path variables
175 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
176 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
178 # if neither is found, skip user
179 if [ ! -s "$authorizedUserIDs" ] ; then
180 if [ "$rawAuthorizedKeys" = '-' -o ! -s "$rawAuthorizedKeys" ] ; then
185 log verbose "----- user: $uname -----"
187 # exit if the authorized_user_ids file is empty
188 if ! check_key_file_permissions "$uname" "$AUTHORIZED_USER_IDS" ; then
189 log error "Improper permissions on path '$AUTHORIZED_USER_IDS'."
193 # check permissions on the authorized_keys file path
194 if ! check_key_file_permissions "$uname" "$RAW_AUTHORIZED_KEYS" ; then
195 log error "Improper permissions on path '$RAW_AUTHORIZED_KEYS'."
199 # make temporary directory
200 TMPLOC=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
202 # trap to delete temporary directory on exit
203 trap "rm -rf $TMPLOC" EXIT
205 # create temporary authorized_user_ids file
206 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
207 touch "$TMP_AUTHORIZED_USER_IDS"
209 # create temporary authorized_keys file
210 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
211 touch "$AUTHORIZED_KEYS"
213 # set restrictive permissions on the temporary files
214 # FIXME: is there a better way to do this?
216 chmod 0600 "$AUTHORIZED_KEYS"
217 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
218 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
220 # if the authorized_user_ids file exists...
221 if [ -s "$authorizedUserIDs" ] ; then
222 # copy user authorized_user_ids file to temporary
224 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
226 # export needed variables
227 export AUTHORIZED_KEYS
228 export TMP_AUTHORIZED_USER_IDS
230 # process authorized_user_ids file, as monkeysphere
232 su_monkeysphere_user \
233 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
237 # add user-controlled authorized_keys file path if specified
238 if [ "$rawAuthorizedKeys" != '-' -a -s "$rawAuthorizedKeys" ] ; then
239 log verbose "adding raw authorized_keys file... "
240 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
243 # openssh appears to check the contents of the
244 # authorized_keys file as the user in question, so the
245 # file must be readable by that user at least.
246 # FIXME: is there a better way to do this?
247 chown root "$AUTHORIZED_KEYS"
248 chgrp $(getent passwd "$uname" | cut -f4 -d:) "$AUTHORIZED_KEYS"
249 chmod g+r "$AUTHORIZED_KEYS"
251 # move the resulting authorized_keys file into place
252 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}"
254 # destroy temporary directory
259 # generate server gpg key
271 # set default key parameter values
279 TEMP=$(PATH="/usr/local/bin:$PATH" getopt -o e:l:r -l expire:,length:,revoker: -n "$PGRM" -- "$@") || failure "getopt failed! Does your getopt support GNU-style long options?"
281 if [ $? != 0 ] ; then
285 # Note the quotes around `$TEMP': they are essential!
311 hostName=${1:-$(hostname -f)}
312 userID="ssh://${hostName}"
314 # check for presense of key with user ID
315 if gpg_host --list-key ="$userID" > /dev/null 2>&1 ; then
316 failure "Key for '$userID' already exists"
319 # prompt about key expiration if not specified
320 keyExpire=$(get_gpg_expiration "$keyExpire")
323 keyParameters=$(cat <<EOF
325 Key-Length: $keyLength
328 Expire-Date: $keyExpire
332 # add the revoker field if specified
333 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
334 # FIXME: key is marked "sensitive"? is this appropriate?
335 if [ "$revoker" ] ; then
336 keyParameters="${keyParameters}"$(cat <<EOF
337 Revoker: 1:$revoker sensitive
342 echo "The following key parameters will be used for the host private key:"
343 echo "$keyParameters"
345 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
346 if [ ${OK/y/Y} != 'Y' ] ; then
351 keyParameters="${keyParameters}"$(cat <<EOF
358 log verbose "generating server key..."
359 echo "$keyParameters" | gpg_host --batch --gen-key
361 # output the server fingerprint
362 fingerprint_server_key "=${userID}"
364 # find the key fingerprint of the newly generated key
365 fingerprint=$(fingerprint_server_key)
367 # export host ownertrust to authentication keyring
368 log verbose "setting ultimate owner trust for server key..."
369 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
371 # translate the private key to ssh format, and export to a file
373 # NOTE: assumes that the primary key is the proper key to use
375 gpg_host --export-secret-key "$fingerprint" | \
376 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
377 log info "Private SSH host key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
380 # extend the lifetime of a host key:
382 local fpr=$(fingerprint_server_key)
385 if [ -z "$fpr" ] ; then
386 failure "You don't appear to have a MonkeySphere host key on this server. Try 'monkeysphere-server gen-key' first."
389 # get the new expiration date
390 extendTo=$(get_gpg_expiration "$extendTo")
392 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
399 echo "NOTE: Host key expiration date adjusted, but not yet published."
400 echo "Run '$PGRM publish-key' to publish the new expiration date."
403 # add hostname user ID to server key
411 if [ -z "$1" ] ; then
412 failure "You must specify a hostname to add."
417 fingerprint=$(fingerprint_server_key)
419 # match to only ultimately trusted user IDs
420 tmpuidMatch="u:$(echo $userID | gpg_escape)"
422 # find the index of the requsted user ID
423 # NOTE: this is based on circumstantial evidence that the order of
424 # this output is the appropriate index
425 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
426 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
427 failure "Host userID '$userID' already exists."
430 echo "The following user ID will be added to the host key:"
432 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
433 if [ ${OK/y/Y} != 'Y' ] ; then
434 failure "User ID not added."
437 # edit-key script command to add user ID
438 adduidCommand=$(cat <<EOF
447 # execute edit-key script
448 if echo "$adduidCommand" | \
449 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
451 # update the trustdb for the authentication keyring
452 gpg_authentication "--check-trustdb"
457 echo "NOTE: User ID added to key, but key not published."
458 echo "Run '$PGRM publish-key' to publish the new user ID."
460 failure "Problem adding user ID."
464 # revoke hostname user ID to server key
474 if [ -z "$1" ] ; then
475 failure "You must specify a hostname to revoke."
478 echo "WARNING: There is a known bug in this function."
479 echo "This function has been known to occasionally revoke the wrong user ID."
480 echo "Please see the following bug report for more information:"
481 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
482 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
483 if [ ${OK/y/Y} != 'Y' ] ; then
489 fingerprint=$(fingerprint_server_key)
491 # match to only ultimately trusted user IDs
492 tmpuidMatch="u:$(echo $userID | gpg_escape)"
494 # find the index of the requsted user ID
495 # NOTE: this is based on circumstantial evidence that the order of
496 # this output is the appropriate index
497 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
498 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
501 failure "No non-revoked user ID '$userID' is found."
504 echo "The following host key user ID will be revoked:"
506 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
507 if [ ${OK/y/Y} != 'Y' ] ; then
508 failure "User ID not revoked."
511 message="Hostname removed by monkeysphere-server $DATE"
513 # edit-key script command to revoke user ID
514 revuidCommand=$(cat <<EOF
526 # execute edit-key script
527 if echo "$revuidCommand" | \
528 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
530 # update the trustdb for the authentication keyring
531 gpg_authentication "--check-trustdb"
536 echo "NOTE: User ID revoked, but revocation not published."
537 echo "Run '$PGRM publish-key' to publish the revocation."
539 failure "Problem revoking user ID."
543 # publish server key to keyserver
544 publish_server_key() {
545 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
546 if [ ${OK/y/Y} != 'Y' ] ; then
547 failure "key not published."
550 # find the key fingerprint
551 fingerprint=$(fingerprint_server_key)
554 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
559 # * check on the status and validity of the key and public certificates
571 local problemsfound=0
573 # FIXME: what's the correct, cross-platform answer?
574 sshd_config=/etc/ssh/sshd_config
575 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
576 keysfound=$(echo "$seckey" | grep -c ^sec:)
578 # warn when anything is 2 months away from expiration
579 warnwindow='2 months'
580 warndate=$(advance_date $warnwindow +%s)
582 if ! id monkeysphere >/dev/null ; then
583 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
584 problemsfound=$(($problemsfound+1))
587 if ! [ -d "$SYSDATADIR" ] ; then
588 echo "! no $SYSDATADIR directory found. Please create it."
589 problemsfound=$(($problemsfound+1))
592 echo "Checking host GPG key..."
593 if (( "$keysfound" < 1 )); then
594 echo "! No host key found."
595 echo " - Recommendation: run 'monkeysphere-server gen-key'"
596 problemsfound=$(($problemsfound+1))
597 elif (( "$keysfound" > 1 )); then
598 echo "! More than one host key found?"
599 # FIXME: recommend a way to resolve this
600 problemsfound=$(($problemsfound+1))
602 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
603 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
604 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
605 # check for key expiration:
606 if [ "$expire" ]; then
607 if (( "$expire" < "$curdate" )); then
608 echo "! Host key is expired."
609 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
610 problemsfound=$(($problemsfound+1))
611 elif (( "$expire" < "$warndate" )); then
612 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
613 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
614 problemsfound=$(($problemsfound+1))
619 if [ "$create" ] && (( "$create" > "$curdate" )); then
620 echo "! Host key was created in the future(?!). Is your clock correct?"
621 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
622 problemsfound=$(($problemsfound+1))
625 # check for UserID expiration:
626 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
627 while IFS=: read create expire uid ; do
628 # FIXME: should we be doing any checking on the form
629 # of the User ID? Should we be unmangling it somehow?
631 if [ "$create" ] && (( "$create" > "$curdate" )); then
632 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
633 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
634 problemsfound=$(($problemsfound+1))
636 if [ "$expire" ] ; then
637 if (( "$expire" < "$curdate" )); then
638 echo "! User ID '$uid' is expired."
639 # FIXME: recommend a way to resolve this
640 problemsfound=$(($problemsfound+1))
641 elif (( "$expire" < "$warndate" )); then
642 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
643 # FIXME: recommend a way to resolve this
644 problemsfound=$(($problemsfound+1))
649 # FIXME: verify that the host key is properly published to the
650 # keyservers (do this with the non-privileged user)
652 # FIXME: check that there are valid, non-expired certifying signatures
653 # attached to the host key after fetching from the public keyserver
654 # (do this with the non-privileged user as well)
656 # FIXME: propose adding a revoker to the host key if none exist (do we
657 # have a way to do that after key generation?)
659 # Ensure that the ssh_host_rsa_key file is present and non-empty:
661 echo "Checking host SSH key..."
662 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
663 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
664 problemsfound=$(($problemsfound+1))
666 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
667 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
668 problemsfound=$(($problemsfound+1))
671 # propose changes needed for sshd_config (if any)
672 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
673 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
674 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
675 problemsfound=$(($problemsfound+1))
677 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
678 echo "! $sshd_config refers to some non-monkeysphere host keys:"
680 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
681 problemsfound=$(($problemsfound+1))
686 # FIXME: look at the ownership/privileges of the various keyrings,
687 # directories housing them, etc (what should those values be? can
688 # we make them as minimal as possible?)
690 # FIXME: look to see that the ownertrust rules are set properly on the
691 # authentication keyring
693 # FIXME: make sure that at least one identity certifier exists
695 # FIXME: look at the timestamps on the monkeysphere-generated
696 # authorized_keys files -- warn if they seem out-of-date.
698 # FIXME: check for a cronjob that updates monkeysphere-generated
702 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
703 # Ensure that User ID authentication is enabled:
704 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
705 echo "! $sshd_config does not point to monkeysphere authorized keys."
706 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
707 problemsfound=$(($problemsfound+1))
709 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
710 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
711 echo "$badauthorizedkeys"
712 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
713 problemsfound=$(($problemsfound+1))
716 if [ "$problemsfound" -gt 0 ]; then
717 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
718 echo " monkeysphere-server diagnostics"
720 echo "Everything seems to be in order!"
724 # retrieve key from web of trust, import it into the host keyring, and
725 # ltsign the key in the host keyring so that it may certify other keys
735 # set default values for trust depth and domain
741 TEMP=$(PATH="/usr/local/bin:$PATH" getopt -o n:t:d: -l domain:,trust:,depth: -n "$PGRM" -- "$@") || failure "getopt failed! Does your getopt support GNU-style long options?"
743 if [ $? != 0 ] ; then
747 # Note the quotes around `$TEMP': they are essential!
774 if [ -z "$keyID" ] ; then
775 failure "You must specify the key ID of a key to add, or specify a file to read the key from."
777 if [ -f "$keyID" ] ; then
778 echo "Reading key from file '$keyID':"
779 importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
780 # FIXME: if this is tried when the key database is not
781 # up-to-date, i got these errors (using set -x):
783 # ++ su -m monkeysphere -c '\''gpg --import'\''
784 # Warning: using insecure memory!
785 # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
786 # gpg: Total number processed: 1
787 # gpg: imported: 1 (RSA: 1)
788 # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
789 # gpg: failed to rebuild keyring cache: Permission denied
790 # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
791 # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
792 # gpg: next trustdb check due at 2009-01-10'
793 # + failure 'could not read key from '\''/root/dkg.gpg'\'''
794 # + echo 'could not read key from '\''/root/dkg.gpg'\'''
796 keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
797 if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
798 failure "Expected there to be a single gpg key in the file."
801 # get the key from the key server
802 gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
808 # get the full fingerprint of a key ID
809 fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
810 grep '^fpr:' | grep "$keyID" | cut -d: -f10)
812 if [ -z "$fingerprint" ] ; then
813 failure "Key '$keyID' not found."
818 gpg_authentication "--fingerprint 0x${fingerprint}!"
820 echo "Are you sure you want to add the above key as a"
821 read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
822 if [ "${OK/y/Y}" != 'Y' ] ; then
823 failure "Identity certifier not added."
826 # export the key to the host keyring
827 gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
829 if [ "$trust" == marginal ]; then
831 elif [ "$trust" == full ]; then
834 failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
838 # NOTE: *all* user IDs will be ltsigned
839 ltsignCommand=$(cat <<EOF
851 if echo "$ltsignCommand" | \
852 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
854 # update the trustdb for the authentication keyring
855 gpg_authentication "--check-trustdb"
858 echo "Identity certifier added."
860 failure "Problem adding identify certifier."
864 # delete a certifiers key from the host keyring
870 if [ -z "$keyID" ] ; then
871 failure "You must specify the key ID of a key to remove."
874 if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
875 read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
876 if [ "${OK/y/Y}" != 'Y' ] ; then
877 failure "Identity certifier not removed."
883 # delete the requested key
884 if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
885 # delete key from host keyring as well
886 gpg_host --delete-key --batch --yes "0x${keyID}!"
888 # update the trustdb for the authentication keyring
889 gpg_authentication "--check-trustdb"
892 echo "Identity certifier removed."
894 failure "Problem removing identity certifier."
898 # list the host certifiers
903 # find trusted keys in authentication keychain
904 keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
905 grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
908 for key in $keys ; do
909 gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
913 # issue command to gpg-authentication keyring
914 gpg_authentication_cmd() {
915 gpg_authentication "$@"
918 ########################################################################
920 ########################################################################
922 # unset variables that should be defined only in config file
924 unset AUTHORIZED_USER_IDS
925 unset RAW_AUTHORIZED_KEYS
926 unset MONKEYSPHERE_USER
928 # load configuration file
929 [ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
931 # set empty config variable with ones from the environment, or with
933 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
934 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
935 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
936 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
937 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
940 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
941 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
942 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
943 GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
945 # export variables needed in su invocation
948 export MONKEYSPHERE_USER
951 export CHECK_KEYSERVER
952 export REQUIRED_USER_KEY_CAPABILITY
953 export GNUPGHOME_HOST
954 export GNUPGHOME_AUTHENTICATION
959 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
963 'update-users'|'update-user'|'u')
975 'add-hostname'|'add-name'|'n+')
979 'revoke-hostname'|'revoke-name'|'n-')
983 'show-key'|'show'|'s')
987 'publish-key'|'publish'|'p')
995 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
999 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1000 remove_certifier "$@"
1003 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1004 list_certifiers "$@"
1007 'gpg-authentication-cmd')
1008 gpg_authentication_cmd "$@"
1011 '--help'|'help'|'-h'|'h'|'?')
1016 failure "Unknown command: '$COMMAND'
1017 Type '$PGRM help' for usage."