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=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
23 # monkeysphere temp directory, in sysdatadir to enable atomic moves of
24 # authorized_keys files
25 MSTMPDIR="${SYSDATADIR}/tmp"
28 # UTC date in ISO 8601 format if needed
29 DATE=$(date -u '+%FT%T')
31 # unset some environment variables that could screw things up
37 ########################################################################
39 ########################################################################
43 usage: $PGRM <subcommand> [options] [args]
44 Monkeysphere server admin tool.
47 update-users (u) [USER]... update user authorized_keys files
49 gen-key (g) [NAME[:PORT]] generate gpg key for the server
50 --length (-l) BITS key length in bits (2048)
51 --expire (-e) EXPIRE date to expire
52 --revoker (-r) FINGERPRINT add a revoker
53 extend-key (e) EXPIRE extend expiration to EXPIRE
54 add-hostname (n+) NAME[:PORT] add hostname user ID to server key
55 revoke-hostname (n-) NAME[:PORT] revoke hostname user ID
56 show-key (s) output all server host key information
57 publish-key (p) publish server host key to keyserver
58 diagnostics (d) report on server monkeysphere status
60 add-id-certifier (c+) KEYID import and tsign a certification key
61 --domain (-n) DOMAIN limit ID certifications to DOMAIN
62 --trust (-t) TRUST trust level of certifier (full)
63 --depth (-d) DEPTH trust depth for certifier (1)
64 remove-id-certifier (c-) KEYID remove a certification key
65 list-id-certifiers (c) list certification keys
67 gpg-authentication-cmd CMD gnupg-authentication command
74 # function to run command as monkeysphere user
75 su_monkeysphere_user() {
76 # if the current user is the monkeysphere user, then just eval
78 if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
81 # otherwise su command as monkeysphere user
83 su "$MONKEYSPHERE_USER" -c "$@"
87 # function to interact with the host gnupg keyring
91 GNUPGHOME="$GNUPGHOME_HOST"
94 # NOTE: we supress this warning because we need the monkeysphere
95 # user to be able to read the host pubring. we realize this might
96 # be problematic, but it's the simplest solution, without too much
98 gpg --no-permission-warning "$@"
101 # always reset the permissions on the host pubring so that the
102 # monkeysphere user can read the trust signatures
103 chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg"
104 chmod g+r "${GNUPGHOME_HOST}/pubring.gpg"
109 # function to interact with the authentication gnupg keyring
110 # FIXME: this function requires basically accepts only a single
111 # argument because of problems with quote expansion. this needs to be
113 gpg_authentication() {
114 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
117 su_monkeysphere_user "gpg $@"
120 # output just key fingerprint
121 fingerprint_server_key() {
122 gpg_host --list-secret-keys --fingerprint \
123 --with-colons --fixed-list-mode 2> /dev/null | \
124 grep '^fpr:' | head -1 | cut -d: -f10
127 # output key information
132 fingerprint=$(fingerprint_server_key)
133 gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprint"
135 # dumping to a file named ' ' so that the ssh-keygen output
136 # doesn't claim any potentially bogus hostname(s):
137 tmpkey=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
138 gpg_authentication "--export $fingerprint" | openpgp2ssh "$fingerprint" 2>/dev/null > "$tmpkey/ "
139 echo -n "ssh fingerprint: "
140 (cd "$tmpkey" && ssh-keygen -l -f ' ' | awk '{ print $2 }')
142 echo -n "OpenPGP fingerprint: "
146 # update authorized_keys for users
149 # get users from command line
152 # or just look at all users if none specified
153 unames=$(getent passwd | cut -d: -f1)
157 MODE="authorized_keys"
160 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
162 # check to see if the gpg trust database has been initialized
163 if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
164 failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
167 # make sure the authorized_keys directory exists
168 mkdir -p "${SYSDATADIR}/authorized_keys"
171 for uname in $unames ; do
172 # check all specified users exist
173 if ! getent passwd "$uname" >/dev/null ; then
174 log error "----- unknown user '$uname' -----"
178 log verbose "----- user: $uname -----"
180 # make temporary directory
181 TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX)
183 # trap to delete temporary directory on exit
184 trap "rm -rf $TMPLOC" EXIT
186 # create temporary authorized_user_ids file
187 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
188 touch "$TMP_AUTHORIZED_USER_IDS"
190 # create temporary authorized_keys file
191 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
192 touch "$AUTHORIZED_KEYS"
194 # set restrictive permissions on the temporary files
195 # FIXME: is there a better way to do this?
197 chmod 0600 "$AUTHORIZED_KEYS"
198 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
199 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
201 # process authorized_user_ids file
202 log debug "checking for authorized_user_ids..."
203 # translating ssh-style path variables
204 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
205 if [ -s "$authorizedUserIDs" ] ; then
206 # check permissions on the authorized_user_ids file path
207 if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
208 # copy user authorized_user_ids file to temporary
210 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
212 # export needed variables
213 export AUTHORIZED_KEYS
214 export TMP_AUTHORIZED_USER_IDS
216 # process authorized_user_ids file, as monkeysphere
218 su_monkeysphere_user \
219 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
222 log debug "not processing authorized_user_ids."
225 log debug "empty or absent authorized_user_ids file."
228 # add user-controlled authorized_keys file if specified
229 # translate ssh-style path variables
230 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
231 if [ "$rawAuthorizedKeys" ] ; then
232 log debug "checking for raw authorized_keys..."
233 if [ -s "$rawAuthorizedKeys" ] ; then
234 # check permissions on the authorized_keys file path
235 if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
236 log verbose "adding raw authorized_keys file... "
237 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
239 log debug "not adding raw authorized_keys file."
242 log debug "empty or absent authorized_keys file."
246 # move the new authorized_keys file into place
247 if [ -s "$AUTHORIZED_KEYS" ] ; then
248 # openssh appears to check the contents of the
249 # authorized_keys file as the user in question, so the
250 # file must be readable by that user at least.
251 # FIXME: is there a better way to do this?
252 chown $(whoami) "$AUTHORIZED_KEYS"
253 chgrp $(getent passwd "$uname" | cut -f4 -d:) "$AUTHORIZED_KEYS"
254 chmod g+r "$AUTHORIZED_KEYS"
256 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}"
258 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
264 # destroy temporary directory
269 # generate server gpg key
281 # set default key parameter values
289 TEMP=$(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?"
291 if [ $? != 0 ] ; then
295 # Note the quotes around `$TEMP': they are essential!
321 hostName=${1:-$(hostname -f)}
322 userID="ssh://${hostName}"
324 # check for presense of key with user ID
325 if gpg_host --list-key ="$userID" > /dev/null 2>&1 ; then
326 failure "Key for '$userID' already exists"
329 # prompt about key expiration if not specified
330 keyExpire=$(get_gpg_expiration "$keyExpire")
333 keyParameters=$(cat <<EOF
335 Key-Length: $keyLength
338 Expire-Date: $keyExpire
342 # add the revoker field if specified
343 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
344 # FIXME: key is marked "sensitive"? is this appropriate?
345 if [ "$revoker" ] ; then
346 keyParameters="${keyParameters}"$(cat <<EOF
347 Revoker: 1:$revoker sensitive
352 echo "The following key parameters will be used for the host private key:"
353 echo "$keyParameters"
355 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
356 if [ ${OK/y/Y} != 'Y' ] ; then
361 keyParameters="${keyParameters}"$(cat <<EOF
368 log verbose "generating server key..."
369 echo "$keyParameters" | gpg_host --batch --gen-key
371 # output the server fingerprint
372 fingerprint_server_key "=${userID}"
374 # find the key fingerprint of the newly generated key
375 fingerprint=$(fingerprint_server_key)
377 # export host ownertrust to authentication keyring
378 log verbose "setting ultimate owner trust for server key..."
379 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
381 # translate the private key to ssh format, and export to a file
383 # NOTE: assumes that the primary key is the proper key to use
385 gpg_host --export-secret-key "$fingerprint" | \
386 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
387 log info "private SSH host key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
390 # extend the lifetime of a host key:
392 local fpr=$(fingerprint_server_key)
395 if [ -z "$fpr" ] ; then
396 failure "You don't appear to have a MonkeySphere host key on this server. Try 'monkeysphere-server gen-key' first."
399 # get the new expiration date
400 extendTo=$(get_gpg_expiration "$extendTo")
402 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
409 echo "NOTE: Host key expiration date adjusted, but not yet published."
410 echo "Run '$PGRM publish-key' to publish the new expiration date."
413 # add hostname user ID to server key
421 if [ -z "$1" ] ; then
422 failure "You must specify a hostname to add."
427 fingerprint=$(fingerprint_server_key)
429 # match to only ultimately trusted user IDs
430 tmpuidMatch="u:$(echo $userID | gpg_escape)"
432 # find the index of the requsted user ID
433 # NOTE: this is based on circumstantial evidence that the order of
434 # this output is the appropriate index
435 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
436 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
437 failure "Host userID '$userID' already exists."
440 echo "The following user ID will be added to the host key:"
442 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
443 if [ ${OK/y/Y} != 'Y' ] ; then
444 failure "User ID not added."
447 # edit-key script command to add user ID
448 adduidCommand=$(cat <<EOF
457 # execute edit-key script
458 if echo "$adduidCommand" | \
459 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
461 # update the trustdb for the authentication keyring
462 gpg_authentication "--check-trustdb"
467 echo "NOTE: User ID added to key, but key not published."
468 echo "Run '$PGRM publish-key' to publish the new user ID."
470 failure "Problem adding user ID."
474 # revoke hostname user ID to server key
484 if [ -z "$1" ] ; then
485 failure "You must specify a hostname to revoke."
488 echo "WARNING: There is a known bug in this function."
489 echo "This function has been known to occasionally revoke the wrong user ID."
490 echo "Please see the following bug report for more information:"
491 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
492 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
493 if [ ${OK/y/Y} != 'Y' ] ; then
499 fingerprint=$(fingerprint_server_key)
501 # match to only ultimately trusted user IDs
502 tmpuidMatch="u:$(echo $userID | gpg_escape)"
504 # find the index of the requsted user ID
505 # NOTE: this is based on circumstantial evidence that the order of
506 # this output is the appropriate index
507 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
508 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
511 failure "No non-revoked user ID '$userID' is found."
514 echo "The following host key user ID will be revoked:"
516 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
517 if [ ${OK/y/Y} != 'Y' ] ; then
518 failure "User ID not revoked."
521 message="Hostname removed by monkeysphere-server $DATE"
523 # edit-key script command to revoke user ID
524 revuidCommand=$(cat <<EOF
536 # execute edit-key script
537 if echo "$revuidCommand" | \
538 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
540 # update the trustdb for the authentication keyring
541 gpg_authentication "--check-trustdb"
546 echo "NOTE: User ID revoked, but revocation not published."
547 echo "Run '$PGRM publish-key' to publish the revocation."
549 failure "Problem revoking user ID."
553 # publish server key to keyserver
554 publish_server_key() {
555 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
556 if [ ${OK/y/Y} != 'Y' ] ; then
557 failure "key not published."
560 # find the key fingerprint
561 fingerprint=$(fingerprint_server_key)
564 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
569 # * check on the status and validity of the key and public certificates
581 local problemsfound=0
583 # FIXME: what's the correct, cross-platform answer?
584 sshd_config=/etc/ssh/sshd_config
585 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
586 keysfound=$(echo "$seckey" | grep -c ^sec:)
588 # warn when anything is 2 months away from expiration
589 warnwindow='2 months'
590 warndate=$(advance_date $warnwindow +%s)
592 if ! id monkeysphere >/dev/null ; then
593 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
594 problemsfound=$(($problemsfound+1))
597 if ! [ -d "$SYSDATADIR" ] ; then
598 echo "! no $SYSDATADIR directory found. Please create it."
599 problemsfound=$(($problemsfound+1))
602 echo "Checking host GPG key..."
603 if (( "$keysfound" < 1 )); then
604 echo "! No host key found."
605 echo " - Recommendation: run 'monkeysphere-server gen-key'"
606 problemsfound=$(($problemsfound+1))
607 elif (( "$keysfound" > 1 )); then
608 echo "! More than one host key found?"
609 # FIXME: recommend a way to resolve this
610 problemsfound=$(($problemsfound+1))
612 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
613 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
614 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
615 # check for key expiration:
616 if [ "$expire" ]; then
617 if (( "$expire" < "$curdate" )); then
618 echo "! Host key is expired."
619 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
620 problemsfound=$(($problemsfound+1))
621 elif (( "$expire" < "$warndate" )); then
622 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
623 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
624 problemsfound=$(($problemsfound+1))
629 if [ "$create" ] && (( "$create" > "$curdate" )); then
630 echo "! Host key was created in the future(?!). Is your clock correct?"
631 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
632 problemsfound=$(($problemsfound+1))
635 # check for UserID expiration:
636 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
637 while IFS=: read create expire uid ; do
638 # FIXME: should we be doing any checking on the form
639 # of the User ID? Should we be unmangling it somehow?
641 if [ "$create" ] && (( "$create" > "$curdate" )); then
642 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
643 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
644 problemsfound=$(($problemsfound+1))
646 if [ "$expire" ] ; then
647 if (( "$expire" < "$curdate" )); then
648 echo "! User ID '$uid' is expired."
649 # FIXME: recommend a way to resolve this
650 problemsfound=$(($problemsfound+1))
651 elif (( "$expire" < "$warndate" )); then
652 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
653 # FIXME: recommend a way to resolve this
654 problemsfound=$(($problemsfound+1))
659 # FIXME: verify that the host key is properly published to the
660 # keyservers (do this with the non-privileged user)
662 # FIXME: check that there are valid, non-expired certifying signatures
663 # attached to the host key after fetching from the public keyserver
664 # (do this with the non-privileged user as well)
666 # FIXME: propose adding a revoker to the host key if none exist (do we
667 # have a way to do that after key generation?)
669 # Ensure that the ssh_host_rsa_key file is present and non-empty:
671 echo "Checking host SSH key..."
672 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
673 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
674 problemsfound=$(($problemsfound+1))
676 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
677 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
678 problemsfound=$(($problemsfound+1))
681 # propose changes needed for sshd_config (if any)
682 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
683 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
684 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
685 problemsfound=$(($problemsfound+1))
687 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
688 echo "! $sshd_config refers to some non-monkeysphere host keys:"
690 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
691 problemsfound=$(($problemsfound+1))
696 # FIXME: look at the ownership/privileges of the various keyrings,
697 # directories housing them, etc (what should those values be? can
698 # we make them as minimal as possible?)
700 # FIXME: look to see that the ownertrust rules are set properly on the
701 # authentication keyring
703 # FIXME: make sure that at least one identity certifier exists
705 # FIXME: look at the timestamps on the monkeysphere-generated
706 # authorized_keys files -- warn if they seem out-of-date.
708 # FIXME: check for a cronjob that updates monkeysphere-generated
712 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
713 # Ensure that User ID authentication is enabled:
714 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
715 echo "! $sshd_config does not point to monkeysphere authorized keys."
716 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
717 problemsfound=$(($problemsfound+1))
719 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
720 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
721 echo "$badauthorizedkeys"
722 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
723 problemsfound=$(($problemsfound+1))
726 if [ "$problemsfound" -gt 0 ]; then
727 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
728 echo " monkeysphere-server diagnostics"
730 echo "Everything seems to be in order!"
734 # retrieve key from web of trust, import it into the host keyring, and
735 # ltsign the key in the host keyring so that it may certify other keys
745 # set default values for trust depth and domain
751 TEMP=$(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?"
753 if [ $? != 0 ] ; then
757 # Note the quotes around `$TEMP': they are essential!
784 if [ -z "$keyID" ] ; then
785 failure "You must specify the key ID of a key to add, or specify a file to read the key from."
787 if [ -f "$keyID" ] ; then
788 echo "Reading key from file '$keyID':"
789 importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
790 # FIXME: if this is tried when the key database is not
791 # up-to-date, i got these errors (using set -x):
793 # ++ su -m monkeysphere -c '\''gpg --import'\''
794 # Warning: using insecure memory!
795 # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
796 # gpg: Total number processed: 1
797 # gpg: imported: 1 (RSA: 1)
798 # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
799 # gpg: failed to rebuild keyring cache: Permission denied
800 # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
801 # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
802 # gpg: next trustdb check due at 2009-01-10'
803 # + failure 'could not read key from '\''/root/dkg.gpg'\'''
804 # + echo 'could not read key from '\''/root/dkg.gpg'\'''
806 keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
807 if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
808 failure "Expected there to be a single gpg key in the file."
811 # get the key from the key server
812 gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
818 # get the full fingerprint of a key ID
819 fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
820 grep '^fpr:' | grep "$keyID" | cut -d: -f10)
822 if [ -z "$fingerprint" ] ; then
823 failure "Key '$keyID' not found."
828 gpg_authentication "--fingerprint 0x${fingerprint}!"
830 echo "Are you sure you want to add the above key as a"
831 read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
832 if [ "${OK/y/Y}" != 'Y' ] ; then
833 failure "Identity certifier not added."
836 # export the key to the host keyring
837 gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
839 if [ "$trust" == marginal ]; then
841 elif [ "$trust" == full ]; then
844 failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
848 # NOTE: *all* user IDs will be ltsigned
849 ltsignCommand=$(cat <<EOF
861 if echo "$ltsignCommand" | \
862 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
864 # update the trustdb for the authentication keyring
865 gpg_authentication "--check-trustdb"
868 echo "Identity certifier added."
870 failure "Problem adding identify certifier."
874 # delete a certifiers key from the host keyring
880 if [ -z "$keyID" ] ; then
881 failure "You must specify the key ID of a key to remove."
884 if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
885 read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
886 if [ "${OK/y/Y}" != 'Y' ] ; then
887 failure "Identity certifier not removed."
893 # delete the requested key
894 if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
895 # delete key from host keyring as well
896 gpg_host --delete-key --batch --yes "0x${keyID}!"
898 # update the trustdb for the authentication keyring
899 gpg_authentication "--check-trustdb"
902 echo "Identity certifier removed."
904 failure "Problem removing identity certifier."
908 # list the host certifiers
913 # find trusted keys in authentication keychain
914 keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
915 grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
918 for key in $keys ; do
919 gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
923 # issue command to gpg-authentication keyring
924 gpg_authentication_cmd() {
925 gpg_authentication "$@"
928 ########################################################################
930 ########################################################################
932 # unset variables that should be defined only in config file
934 unset AUTHORIZED_USER_IDS
935 unset RAW_AUTHORIZED_KEYS
936 unset MONKEYSPHERE_USER
938 # load configuration file
939 [ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
941 # set empty config variable with ones from the environment, or with
943 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
944 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
945 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
946 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
947 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
950 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
951 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
952 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
953 GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
955 # export variables needed in su invocation
958 export MONKEYSPHERE_USER
961 export CHECK_KEYSERVER
962 export REQUIRED_USER_KEY_CAPABILITY
963 export GNUPGHOME_HOST
964 export GNUPGHOME_AUTHENTICATION
969 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
973 'update-users'|'update-user'|'u')
985 'add-hostname'|'add-name'|'n+')
989 'revoke-hostname'|'revoke-name'|'n-')
993 'show-key'|'show'|'s')
997 'publish-key'|'publish'|'p')
1005 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
1009 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1010 remove_certifier "$@"
1013 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1014 list_certifiers "$@"
1017 'gpg-authentication-cmd')
1018 gpg_authentication_cmd "$@"
1021 '--help'|'help'|'-h'|'h'|'?')
1026 failure "Unknown command: '$COMMAND'
1027 Type '$PGRM help' for usage."