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 log verbose "----- user: $uname -----"
175 # make temporary directory
176 TMPLOC=$(mktemp -d ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
178 # trap to delete temporary directory on exit
179 trap "rm -rf $TMPLOC" EXIT
181 # create temporary authorized_user_ids file
182 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
183 touch "$TMP_AUTHORIZED_USER_IDS"
185 # create temporary authorized_keys file
186 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
187 touch "$AUTHORIZED_KEYS"
189 # set restrictive permissions on the temporary files
190 # FIXME: is there a better way to do this?
192 chmod 0600 "$AUTHORIZED_KEYS"
193 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
194 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
196 # process authorized_user_ids file
197 log debug "checking for authorized_user_ids..."
198 # translating ssh-style path variables
199 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
200 if [ -s "$authorizedUserIDs" ] ; then
201 # check permissions on the authorized_user_ids file path
202 if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
203 # copy user authorized_user_ids file to temporary
205 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
207 # export needed variables
208 export AUTHORIZED_KEYS
209 export TMP_AUTHORIZED_USER_IDS
211 # process authorized_user_ids file, as monkeysphere
213 su_monkeysphere_user \
214 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
217 log debug "not processing authorized_user_ids."
220 log debug "empty or absent authorized_user_ids file."
223 # add user-controlled authorized_keys file if specified
224 # translate ssh-style path variables
225 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
226 if [ "$rawAuthorizedKeys" ] ; then
227 log debug "checking for raw authorized_keys..."
228 if [ -s "$rawAuthorizedKeys" ] ; then
229 # check permissions on the authorized_keys file path
230 if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
231 log verbose "adding raw authorized_keys file... "
232 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
234 log debug "not adding raw authorized_keys file."
237 log debug "empty or absent authorized_keys file."
241 # move the new authorized_keys file into place
242 if [ -s "$AUTHORIZED_KEYS" ] ; then
243 # openssh appears to check the contents of the
244 # authorized_keys file as the user in question, so the
245 # file must be readable by that user at least.
246 # FIXME: is there a better way to do this?
247 chown root "$AUTHORIZED_KEYS"
248 chgrp $(getent passwd "$uname" | cut -f4 -d:) "$AUTHORIZED_KEYS"
249 chmod g+r "$AUTHORIZED_KEYS"
251 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}"
253 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
259 # destroy temporary directory
264 # generate server gpg key
276 # set default key parameter values
284 TEMP=$(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?"
286 if [ $? != 0 ] ; then
290 # Note the quotes around `$TEMP': they are essential!
316 hostName=${1:-$(hostname -f)}
317 userID="ssh://${hostName}"
319 # check for presense of key with user ID
320 if gpg_host --list-key ="$userID" > /dev/null 2>&1 ; then
321 failure "Key for '$userID' already exists"
324 # prompt about key expiration if not specified
325 keyExpire=$(get_gpg_expiration "$keyExpire")
328 keyParameters=$(cat <<EOF
330 Key-Length: $keyLength
333 Expire-Date: $keyExpire
337 # add the revoker field if specified
338 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
339 # FIXME: key is marked "sensitive"? is this appropriate?
340 if [ "$revoker" ] ; then
341 keyParameters="${keyParameters}"$(cat <<EOF
342 Revoker: 1:$revoker sensitive
347 echo "The following key parameters will be used for the host private key:"
348 echo "$keyParameters"
350 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
351 if [ ${OK/y/Y} != 'Y' ] ; then
356 keyParameters="${keyParameters}"$(cat <<EOF
363 log verbose "generating server key..."
364 echo "$keyParameters" | gpg_host --batch --gen-key
366 # output the server fingerprint
367 fingerprint_server_key "=${userID}"
369 # find the key fingerprint of the newly generated key
370 fingerprint=$(fingerprint_server_key)
372 # export host ownertrust to authentication keyring
373 log verbose "setting ultimate owner trust for server key..."
374 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
376 # translate the private key to ssh format, and export to a file
378 # NOTE: assumes that the primary key is the proper key to use
380 gpg_host --export-secret-key "$fingerprint" | \
381 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
382 log info "private SSH host key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
385 # extend the lifetime of a host key:
387 local fpr=$(fingerprint_server_key)
390 if [ -z "$fpr" ] ; then
391 failure "You don't appear to have a MonkeySphere host key on this server. Try 'monkeysphere-server gen-key' first."
394 # get the new expiration date
395 extendTo=$(get_gpg_expiration "$extendTo")
397 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
404 echo "NOTE: Host key expiration date adjusted, but not yet published."
405 echo "Run '$PGRM publish-key' to publish the new expiration date."
408 # add hostname user ID to server key
416 if [ -z "$1" ] ; then
417 failure "You must specify a hostname to add."
422 fingerprint=$(fingerprint_server_key)
424 # match to only ultimately trusted user IDs
425 tmpuidMatch="u:$(echo $userID | gpg_escape)"
427 # find the index of the requsted user ID
428 # NOTE: this is based on circumstantial evidence that the order of
429 # this output is the appropriate index
430 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
431 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
432 failure "Host userID '$userID' already exists."
435 echo "The following user ID will be added to the host key:"
437 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
438 if [ ${OK/y/Y} != 'Y' ] ; then
439 failure "User ID not added."
442 # edit-key script command to add user ID
443 adduidCommand=$(cat <<EOF
452 # execute edit-key script
453 if echo "$adduidCommand" | \
454 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
456 # update the trustdb for the authentication keyring
457 gpg_authentication "--check-trustdb"
462 echo "NOTE: User ID added to key, but key not published."
463 echo "Run '$PGRM publish-key' to publish the new user ID."
465 failure "Problem adding user ID."
469 # revoke hostname user ID to server key
479 if [ -z "$1" ] ; then
480 failure "You must specify a hostname to revoke."
483 echo "WARNING: There is a known bug in this function."
484 echo "This function has been known to occasionally revoke the wrong user ID."
485 echo "Please see the following bug report for more information:"
486 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
487 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
488 if [ ${OK/y/Y} != 'Y' ] ; then
494 fingerprint=$(fingerprint_server_key)
496 # match to only ultimately trusted user IDs
497 tmpuidMatch="u:$(echo $userID | gpg_escape)"
499 # find the index of the requsted user ID
500 # NOTE: this is based on circumstantial evidence that the order of
501 # this output is the appropriate index
502 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
503 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
506 failure "No non-revoked user ID '$userID' is found."
509 echo "The following host key user ID will be revoked:"
511 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
512 if [ ${OK/y/Y} != 'Y' ] ; then
513 failure "User ID not revoked."
516 message="Hostname removed by monkeysphere-server $DATE"
518 # edit-key script command to revoke user ID
519 revuidCommand=$(cat <<EOF
531 # execute edit-key script
532 if echo "$revuidCommand" | \
533 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
535 # update the trustdb for the authentication keyring
536 gpg_authentication "--check-trustdb"
541 echo "NOTE: User ID revoked, but revocation not published."
542 echo "Run '$PGRM publish-key' to publish the revocation."
544 failure "Problem revoking user ID."
548 # publish server key to keyserver
549 publish_server_key() {
550 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
551 if [ ${OK/y/Y} != 'Y' ] ; then
552 failure "key not published."
555 # find the key fingerprint
556 fingerprint=$(fingerprint_server_key)
559 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
564 # * check on the status and validity of the key and public certificates
576 local problemsfound=0
578 # FIXME: what's the correct, cross-platform answer?
579 sshd_config=/etc/ssh/sshd_config
580 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
581 keysfound=$(echo "$seckey" | grep -c ^sec:)
583 # warn when anything is 2 months away from expiration
584 warnwindow='2 months'
585 warndate=$(advance_date $warnwindow +%s)
587 if ! id monkeysphere >/dev/null ; then
588 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
589 problemsfound=$(($problemsfound+1))
592 if ! [ -d "$SYSDATADIR" ] ; then
593 echo "! no $SYSDATADIR directory found. Please create it."
594 problemsfound=$(($problemsfound+1))
597 echo "Checking host GPG key..."
598 if (( "$keysfound" < 1 )); then
599 echo "! No host key found."
600 echo " - Recommendation: run 'monkeysphere-server gen-key'"
601 problemsfound=$(($problemsfound+1))
602 elif (( "$keysfound" > 1 )); then
603 echo "! More than one host key found?"
604 # FIXME: recommend a way to resolve this
605 problemsfound=$(($problemsfound+1))
607 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
608 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
609 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
610 # check for key expiration:
611 if [ "$expire" ]; then
612 if (( "$expire" < "$curdate" )); then
613 echo "! Host key is expired."
614 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
615 problemsfound=$(($problemsfound+1))
616 elif (( "$expire" < "$warndate" )); then
617 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
618 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
619 problemsfound=$(($problemsfound+1))
624 if [ "$create" ] && (( "$create" > "$curdate" )); then
625 echo "! Host key was created in the future(?!). Is your clock correct?"
626 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
627 problemsfound=$(($problemsfound+1))
630 # check for UserID expiration:
631 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
632 while IFS=: read create expire uid ; do
633 # FIXME: should we be doing any checking on the form
634 # of the User ID? Should we be unmangling it somehow?
636 if [ "$create" ] && (( "$create" > "$curdate" )); then
637 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
638 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
639 problemsfound=$(($problemsfound+1))
641 if [ "$expire" ] ; then
642 if (( "$expire" < "$curdate" )); then
643 echo "! User ID '$uid' is expired."
644 # FIXME: recommend a way to resolve this
645 problemsfound=$(($problemsfound+1))
646 elif (( "$expire" < "$warndate" )); then
647 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
648 # FIXME: recommend a way to resolve this
649 problemsfound=$(($problemsfound+1))
654 # FIXME: verify that the host key is properly published to the
655 # keyservers (do this with the non-privileged user)
657 # FIXME: check that there are valid, non-expired certifying signatures
658 # attached to the host key after fetching from the public keyserver
659 # (do this with the non-privileged user as well)
661 # FIXME: propose adding a revoker to the host key if none exist (do we
662 # have a way to do that after key generation?)
664 # Ensure that the ssh_host_rsa_key file is present and non-empty:
666 echo "Checking host SSH key..."
667 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
668 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
669 problemsfound=$(($problemsfound+1))
671 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
672 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
673 problemsfound=$(($problemsfound+1))
676 # propose changes needed for sshd_config (if any)
677 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
678 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
679 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
680 problemsfound=$(($problemsfound+1))
682 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
683 echo "! $sshd_config refers to some non-monkeysphere host keys:"
685 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
686 problemsfound=$(($problemsfound+1))
691 # FIXME: look at the ownership/privileges of the various keyrings,
692 # directories housing them, etc (what should those values be? can
693 # we make them as minimal as possible?)
695 # FIXME: look to see that the ownertrust rules are set properly on the
696 # authentication keyring
698 # FIXME: make sure that at least one identity certifier exists
700 # FIXME: look at the timestamps on the monkeysphere-generated
701 # authorized_keys files -- warn if they seem out-of-date.
703 # FIXME: check for a cronjob that updates monkeysphere-generated
707 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
708 # Ensure that User ID authentication is enabled:
709 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
710 echo "! $sshd_config does not point to monkeysphere authorized keys."
711 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
712 problemsfound=$(($problemsfound+1))
714 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
715 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
716 echo "$badauthorizedkeys"
717 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
718 problemsfound=$(($problemsfound+1))
721 if [ "$problemsfound" -gt 0 ]; then
722 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
723 echo " monkeysphere-server diagnostics"
725 echo "Everything seems to be in order!"
729 # retrieve key from web of trust, import it into the host keyring, and
730 # ltsign the key in the host keyring so that it may certify other keys
740 # set default values for trust depth and domain
746 TEMP=$(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?"
748 if [ $? != 0 ] ; then
752 # Note the quotes around `$TEMP': they are essential!
779 if [ -z "$keyID" ] ; then
780 failure "You must specify the key ID of a key to add, or specify a file to read the key from."
782 if [ -f "$keyID" ] ; then
783 echo "Reading key from file '$keyID':"
784 importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
785 # FIXME: if this is tried when the key database is not
786 # up-to-date, i got these errors (using set -x):
788 # ++ su -m monkeysphere -c '\''gpg --import'\''
789 # Warning: using insecure memory!
790 # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
791 # gpg: Total number processed: 1
792 # gpg: imported: 1 (RSA: 1)
793 # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
794 # gpg: failed to rebuild keyring cache: Permission denied
795 # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
796 # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
797 # gpg: next trustdb check due at 2009-01-10'
798 # + failure 'could not read key from '\''/root/dkg.gpg'\'''
799 # + echo 'could not read key from '\''/root/dkg.gpg'\'''
801 keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
802 if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
803 failure "Expected there to be a single gpg key in the file."
806 # get the key from the key server
807 gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
813 # get the full fingerprint of a key ID
814 fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
815 grep '^fpr:' | grep "$keyID" | cut -d: -f10)
817 if [ -z "$fingerprint" ] ; then
818 failure "Key '$keyID' not found."
823 gpg_authentication "--fingerprint 0x${fingerprint}!"
825 echo "Are you sure you want to add the above key as a"
826 read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
827 if [ "${OK/y/Y}" != 'Y' ] ; then
828 failure "Identity certifier not added."
831 # export the key to the host keyring
832 gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
834 if [ "$trust" == marginal ]; then
836 elif [ "$trust" == full ]; then
839 failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
843 # NOTE: *all* user IDs will be ltsigned
844 ltsignCommand=$(cat <<EOF
856 if echo "$ltsignCommand" | \
857 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
859 # update the trustdb for the authentication keyring
860 gpg_authentication "--check-trustdb"
863 echo "Identity certifier added."
865 failure "Problem adding identify certifier."
869 # delete a certifiers key from the host keyring
875 if [ -z "$keyID" ] ; then
876 failure "You must specify the key ID of a key to remove."
879 if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
880 read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
881 if [ "${OK/y/Y}" != 'Y' ] ; then
882 failure "Identity certifier not removed."
888 # delete the requested key
889 if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
890 # delete key from host keyring as well
891 gpg_host --delete-key --batch --yes "0x${keyID}!"
893 # update the trustdb for the authentication keyring
894 gpg_authentication "--check-trustdb"
897 echo "Identity certifier removed."
899 failure "Problem removing identity certifier."
903 # list the host certifiers
908 # find trusted keys in authentication keychain
909 keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
910 grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
913 for key in $keys ; do
914 gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
918 # issue command to gpg-authentication keyring
919 gpg_authentication_cmd() {
920 gpg_authentication "$@"
923 ########################################################################
925 ########################################################################
927 # unset variables that should be defined only in config file
929 unset AUTHORIZED_USER_IDS
930 unset RAW_AUTHORIZED_KEYS
931 unset MONKEYSPHERE_USER
933 # load configuration file
934 [ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
936 # set empty config variable with ones from the environment, or with
938 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
939 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
940 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
941 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
942 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
945 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
946 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
947 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
948 GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
950 # export variables needed in su invocation
953 export MONKEYSPHERE_USER
956 export CHECK_KEYSERVER
957 export REQUIRED_USER_KEY_CAPABILITY
958 export GNUPGHOME_HOST
959 export GNUPGHOME_AUTHENTICATION
964 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
968 'update-users'|'update-user'|'u')
980 'add-hostname'|'add-name'|'n+')
984 'revoke-hostname'|'revoke-name'|'n-')
988 'show-key'|'show'|'s')
992 'publish-key'|'publish'|'p')
1000 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
1004 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1005 remove_certifier "$@"
1008 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1009 list_certifiers "$@"
1012 'gpg-authentication-cmd')
1013 gpg_authentication_cmd "$@"
1016 '--help'|'help'|'-h'|'h'|'?')
1021 failure "Unknown command: '$COMMAND'
1022 Type '$PGRM help' for usage."