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 $fingerprint"
135 # do some crazy "Here Strings" redirection to get the key to
136 # ssh-keygen, since it doesn't read from stdin cleanly
137 echo -n "ssh fingerprint: "
138 ssh-keygen -l -f /dev/stdin \
139 <<<$(gpg_authentication "--export $fingerprint" | \
140 openpgp2ssh "$fingerprint" 2>/dev/null) | \
141 awk '{ print $1, $2, $4 }'
142 echo -n "OpenPGP fingerprint: "
146 # update authorized_keys for users
149 # get users from command line
152 # or just look at all users if none specified
153 unames=$(getent passwd | cut -d: -f1)
159 MODE="authorized_keys"
162 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
164 # check to see if the gpg trust database has been initialized
165 if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
166 failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
169 # make sure the authorized_keys directory exists
170 mkdir -p "${SYSDATADIR}/authorized_keys"
173 for uname in $unames ; do
174 # check all specified users exist
175 if ! id "$uname" >/dev/null ; then
176 log error "----- unknown user '$uname' -----"
180 log verbose "----- user: $uname -----"
182 # make temporary directory
183 TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
185 # trap to delete temporary directory on exit
186 trap "rm -rf $TMPLOC" EXIT
188 # create temporary authorized_user_ids file
189 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
190 touch "$TMP_AUTHORIZED_USER_IDS"
192 # create temporary authorized_keys file
193 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
194 touch "$AUTHORIZED_KEYS"
196 # set restrictive permissions on the temporary files
197 # FIXME: is there a better way to do this?
199 chmod 0600 "$AUTHORIZED_KEYS"
200 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
201 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
203 # process authorized_user_ids file
204 log debug "checking for authorized_user_ids..."
205 # translating ssh-style path variables
206 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
207 if [ -s "$authorizedUserIDs" ] ; then
208 # check permissions on the authorized_user_ids file path
209 if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
210 # copy user authorized_user_ids file to temporary
212 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
214 # export needed variables
215 export AUTHORIZED_KEYS
216 export TMP_AUTHORIZED_USER_IDS
218 # process authorized_user_ids file, as monkeysphere
220 su_monkeysphere_user \
221 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
224 log debug "not processing authorized_user_ids."
227 log debug "empty or absent authorized_user_ids file."
230 # add user-controlled authorized_keys file if specified
231 # translate ssh-style path variables
232 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
233 if [ "$rawAuthorizedKeys" != 'none' ] ; then
234 log debug "checking for raw authorized_keys..."
235 if [ -s "$rawAuthorizedKeys" ] ; then
236 # check permissions on the authorized_keys file path
237 if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
238 log verbose "adding raw authorized_keys file... "
239 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
241 log debug "not adding raw authorized_keys file."
244 log debug "empty or absent authorized_keys file."
248 # move the new authorized_keys file into place
249 if [ -s "$AUTHORIZED_KEYS" ] ; then
250 # openssh appears to check the contents of the
251 # authorized_keys file as the user in question, so the
252 # file must be readable by that user at least.
254 # but in general, we don't want the user tampering with
255 # this file directly, so we'll adopt this approach: Own
256 # the file by the monkeysphere-server invoker (usually
257 # root, but should be the same uid that sshd is launched
258 # as); change the group of the file so that members of the
259 # user's group can read it.
261 # FIXME: is there a better way to do this?
262 chown $(whoami) "$AUTHORIZED_KEYS" && \
263 chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
264 chmod g+r "$AUTHORIZED_KEYS" && \
265 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}" || \
267 log error "Failed to install authorized_keys for '$uname'!"
268 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
269 # indicate that there has been a failure:
273 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
279 # destroy temporary directory
284 # generate server gpg key
296 # set default key parameter values
304 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?"
306 if [ $? != 0 ] ; then
310 # Note the quotes around `$TEMP': they are essential!
336 hostName=${1:-$(hostname -f)}
337 userID="ssh://${hostName}"
339 # check for presense of key with user ID
340 if gpg_host --list-key ="$userID" > /dev/null 2>&1 ; then
341 failure "Key for '$userID' already exists"
344 # prompt about key expiration if not specified
345 keyExpire=$(get_gpg_expiration "$keyExpire")
348 keyParameters=$(cat <<EOF
350 Key-Length: $keyLength
353 Expire-Date: $keyExpire
357 # add the revoker field if specified
358 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
359 # FIXME: key is marked "sensitive"? is this appropriate?
360 if [ "$revoker" ] ; then
361 keyParameters="${keyParameters}"$(cat <<EOF
362 Revoker: 1:$revoker sensitive
367 echo "The following key parameters will be used for the host private key:"
368 echo "$keyParameters"
370 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
371 if [ ${OK/y/Y} != 'Y' ] ; then
376 keyParameters="${keyParameters}"$(cat <<EOF
383 log verbose "generating server key..."
384 echo "$keyParameters" | gpg_host --batch --gen-key
386 # output the server fingerprint
387 fingerprint_server_key "=${userID}"
389 # find the key fingerprint of the newly generated key
390 fingerprint=$(fingerprint_server_key)
392 # export host ownertrust to authentication keyring
393 log verbose "setting ultimate owner trust for server key..."
394 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
396 # translate the private key to ssh format, and export to a file
398 # NOTE: assumes that the primary key is the proper key to use
400 gpg_host --export-secret-key "$fingerprint" | \
401 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
402 log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
403 ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
404 log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
405 gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
406 log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
409 # extend the lifetime of a host key:
411 local fpr=$(fingerprint_server_key)
414 if [ -z "$fpr" ] ; then
415 failure "You don't appear to have a MonkeySphere host key on this server. Try 'monkeysphere-server gen-key' first."
418 # get the new expiration date
419 extendTo=$(get_gpg_expiration "$extendTo")
421 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
428 echo "NOTE: Host key expiration date adjusted, but not yet published."
429 echo "Run '$PGRM publish-key' to publish the new expiration date."
432 # add hostname user ID to server key
440 if [ -z "$1" ] ; then
441 failure "You must specify a hostname to add."
446 fingerprint=$(fingerprint_server_key)
448 # match to only ultimately trusted user IDs
449 tmpuidMatch="u:$(echo $userID | gpg_escape)"
451 # find the index of the requsted user ID
452 # NOTE: this is based on circumstantial evidence that the order of
453 # this output is the appropriate index
454 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
455 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
456 failure "Host userID '$userID' already exists."
459 echo "The following user ID will be added to the host key:"
461 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
462 if [ ${OK/y/Y} != 'Y' ] ; then
463 failure "User ID not added."
466 # edit-key script command to add user ID
467 adduidCommand=$(cat <<EOF
476 # execute edit-key script
477 if echo "$adduidCommand" | \
478 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
480 # update the trustdb for the authentication keyring
481 gpg_authentication "--check-trustdb"
486 echo "NOTE: User ID added to key, but key not published."
487 echo "Run '$PGRM publish-key' to publish the new user ID."
489 failure "Problem adding user ID."
493 # revoke hostname user ID to server key
503 if [ -z "$1" ] ; then
504 failure "You must specify a hostname to revoke."
507 echo "WARNING: There is a known bug in this function."
508 echo "This function has been known to occasionally revoke the wrong user ID."
509 echo "Please see the following bug report for more information:"
510 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
511 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
512 if [ ${OK/y/Y} != 'Y' ] ; then
518 fingerprint=$(fingerprint_server_key)
520 # match to only ultimately trusted user IDs
521 tmpuidMatch="u:$(echo $userID | gpg_escape)"
523 # find the index of the requsted user ID
524 # NOTE: this is based on circumstantial evidence that the order of
525 # this output is the appropriate index
526 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
527 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
530 failure "No non-revoked user ID '$userID' is found."
533 echo "The following host key user ID will be revoked:"
535 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
536 if [ ${OK/y/Y} != 'Y' ] ; then
537 failure "User ID not revoked."
540 message="Hostname removed by monkeysphere-server $DATE"
542 # edit-key script command to revoke user ID
543 revuidCommand=$(cat <<EOF
555 # execute edit-key script
556 if echo "$revuidCommand" | \
557 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
559 # update the trustdb for the authentication keyring
560 gpg_authentication "--check-trustdb"
565 echo "NOTE: User ID revoked, but revocation not published."
566 echo "Run '$PGRM publish-key' to publish the revocation."
568 failure "Problem revoking user ID."
572 # publish server key to keyserver
573 publish_server_key() {
574 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
575 if [ ${OK/y/Y} != 'Y' ] ; then
576 failure "key not published."
579 # find the key fingerprint
580 fingerprint=$(fingerprint_server_key)
583 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
588 # * check on the status and validity of the key and public certificates
600 local problemsfound=0
602 # FIXME: what's the correct, cross-platform answer?
603 sshd_config=/etc/ssh/sshd_config
604 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
605 keysfound=$(echo "$seckey" | grep -c ^sec:)
607 # warn when anything is 2 months away from expiration
608 warnwindow='2 months'
609 warndate=$(advance_date $warnwindow +%s)
611 if ! id monkeysphere >/dev/null ; then
612 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
613 problemsfound=$(($problemsfound+1))
616 if ! [ -d "$SYSDATADIR" ] ; then
617 echo "! no $SYSDATADIR directory found. Please create it."
618 problemsfound=$(($problemsfound+1))
621 echo "Checking host GPG key..."
622 if (( "$keysfound" < 1 )); then
623 echo "! No host key found."
624 echo " - Recommendation: run 'monkeysphere-server gen-key'"
625 problemsfound=$(($problemsfound+1))
626 elif (( "$keysfound" > 1 )); then
627 echo "! More than one host key found?"
628 # FIXME: recommend a way to resolve this
629 problemsfound=$(($problemsfound+1))
631 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
632 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
633 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
634 # check for key expiration:
635 if [ "$expire" ]; then
636 if (( "$expire" < "$curdate" )); then
637 echo "! Host key is expired."
638 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
639 problemsfound=$(($problemsfound+1))
640 elif (( "$expire" < "$warndate" )); then
641 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
642 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
643 problemsfound=$(($problemsfound+1))
648 if [ "$create" ] && (( "$create" > "$curdate" )); then
649 echo "! Host key was created in the future(?!). Is your clock correct?"
650 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
651 problemsfound=$(($problemsfound+1))
654 # check for UserID expiration:
655 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
656 while IFS=: read create expire uid ; do
657 # FIXME: should we be doing any checking on the form
658 # of the User ID? Should we be unmangling it somehow?
660 if [ "$create" ] && (( "$create" > "$curdate" )); then
661 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
662 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
663 problemsfound=$(($problemsfound+1))
665 if [ "$expire" ] ; then
666 if (( "$expire" < "$curdate" )); then
667 echo "! User ID '$uid' is expired."
668 # FIXME: recommend a way to resolve this
669 problemsfound=$(($problemsfound+1))
670 elif (( "$expire" < "$warndate" )); then
671 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
672 # FIXME: recommend a way to resolve this
673 problemsfound=$(($problemsfound+1))
678 # FIXME: verify that the host key is properly published to the
679 # keyservers (do this with the non-privileged user)
681 # FIXME: check that there are valid, non-expired certifying signatures
682 # attached to the host key after fetching from the public keyserver
683 # (do this with the non-privileged user as well)
685 # FIXME: propose adding a revoker to the host key if none exist (do we
686 # have a way to do that after key generation?)
688 # Ensure that the ssh_host_rsa_key file is present and non-empty:
690 echo "Checking host SSH key..."
691 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
692 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
693 problemsfound=$(($problemsfound+1))
695 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
696 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
697 problemsfound=$(($problemsfound+1))
700 # propose changes needed for sshd_config (if any)
701 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
702 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
703 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
704 problemsfound=$(($problemsfound+1))
706 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
707 echo "! $sshd_config refers to some non-monkeysphere host keys:"
709 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
710 problemsfound=$(($problemsfound+1))
715 # FIXME: look at the ownership/privileges of the various keyrings,
716 # directories housing them, etc (what should those values be? can
717 # we make them as minimal as possible?)
719 # FIXME: look to see that the ownertrust rules are set properly on the
720 # authentication keyring
722 # FIXME: make sure that at least one identity certifier exists
724 # FIXME: look at the timestamps on the monkeysphere-generated
725 # authorized_keys files -- warn if they seem out-of-date.
727 # FIXME: check for a cronjob that updates monkeysphere-generated
731 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
732 # Ensure that User ID authentication is enabled:
733 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
734 echo "! $sshd_config does not point to monkeysphere authorized keys."
735 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
736 problemsfound=$(($problemsfound+1))
738 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
739 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
740 echo "$badauthorizedkeys"
741 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
742 problemsfound=$(($problemsfound+1))
745 if [ "$problemsfound" -gt 0 ]; then
746 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
747 echo " monkeysphere-server diagnostics"
749 echo "Everything seems to be in order!"
753 # retrieve key from web of trust, import it into the host keyring, and
754 # ltsign the key in the host keyring so that it may certify other keys
764 # set default values for trust depth and domain
770 TEMP=$(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?"
772 if [ $? != 0 ] ; then
776 # Note the quotes around `$TEMP': they are essential!
803 if [ -z "$keyID" ] ; then
804 failure "You must specify the key ID of a key to add, or specify a file to read the key from."
806 if [ -f "$keyID" ] ; then
807 echo "Reading key from file '$keyID':"
808 importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
809 # FIXME: if this is tried when the key database is not
810 # up-to-date, i got these errors (using set -x):
812 # ++ su -m monkeysphere -c '\''gpg --import'\''
813 # Warning: using insecure memory!
814 # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
815 # gpg: Total number processed: 1
816 # gpg: imported: 1 (RSA: 1)
817 # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
818 # gpg: failed to rebuild keyring cache: Permission denied
819 # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
820 # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
821 # gpg: next trustdb check due at 2009-01-10'
822 # + failure 'could not read key from '\''/root/dkg.gpg'\'''
823 # + echo 'could not read key from '\''/root/dkg.gpg'\'''
825 keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
826 if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
827 failure "Expected there to be a single gpg key in the file."
830 # get the key from the key server
831 gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
837 # get the full fingerprint of a key ID
838 fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
839 grep '^fpr:' | grep "$keyID" | cut -d: -f10)
841 if [ -z "$fingerprint" ] ; then
842 failure "Key '$keyID' not found."
847 gpg_authentication "--fingerprint 0x${fingerprint}!"
849 echo "Are you sure you want to add the above key as a"
850 read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
851 if [ "${OK/y/Y}" != 'Y' ] ; then
852 failure "Identity certifier not added."
855 # export the key to the host keyring
856 gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
858 if [ "$trust" == marginal ]; then
860 elif [ "$trust" == full ]; then
863 failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
867 # NOTE: *all* user IDs will be ltsigned
868 ltsignCommand=$(cat <<EOF
880 if echo "$ltsignCommand" | \
881 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
883 # update the trustdb for the authentication keyring
884 gpg_authentication "--check-trustdb"
887 echo "Identity certifier added."
889 failure "Problem adding identify certifier."
893 # delete a certifiers key from the host keyring
899 if [ -z "$keyID" ] ; then
900 failure "You must specify the key ID of a key to remove."
903 if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
904 read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
905 if [ "${OK/y/Y}" != 'Y' ] ; then
906 failure "Identity certifier not removed."
912 # delete the requested key
913 if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
914 # delete key from host keyring as well
915 gpg_host --delete-key --batch --yes "0x${keyID}!"
917 # update the trustdb for the authentication keyring
918 gpg_authentication "--check-trustdb"
921 echo "Identity certifier removed."
923 failure "Problem removing identity certifier."
927 # list the host certifiers
932 # find trusted keys in authentication keychain
933 keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
934 grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
937 for key in $keys ; do
938 gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
942 # issue command to gpg-authentication keyring
943 gpg_authentication_cmd() {
944 gpg_authentication "$@"
947 ########################################################################
949 ########################################################################
951 # unset variables that should be defined only in config file
953 unset AUTHORIZED_USER_IDS
954 unset RAW_AUTHORIZED_KEYS
955 unset MONKEYSPHERE_USER
957 # load configuration file
958 [ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
960 # set empty config variable with ones from the environment, or with
962 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
963 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
964 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
965 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
966 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
969 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
970 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
971 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
972 GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
974 # export variables needed in su invocation
977 export MONKEYSPHERE_USER
980 export CHECK_KEYSERVER
981 export REQUIRED_USER_KEY_CAPABILITY
982 export GNUPGHOME_HOST
983 export GNUPGHOME_AUTHENTICATION
988 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
992 'update-users'|'update-user'|'u')
1004 'add-hostname'|'add-name'|'n+')
1008 'revoke-hostname'|'revoke-name'|'n-')
1009 revoke_hostname "$@"
1012 'show-key'|'show'|'s')
1016 'publish-key'|'publish'|'p')
1024 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
1028 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1029 remove_certifier "$@"
1032 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1033 list_certifiers "$@"
1036 'gpg-authentication-cmd')
1037 gpg_authentication_cmd "$@"
1040 '--help'|'help'|'-h'|'h'|'?')
1045 failure "Unknown command: '$COMMAND'
1046 Type '$PGRM help' for usage."