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 # check if user is root
122 [ $(id -u 2>/dev/null) = '0' ]
125 # check that user is root, for functions that require root access
127 is_root || failure "You must be root to run this command."
130 # output just key fingerprint
131 fingerprint_server_key() {
132 # set the pipefail option so functions fails if can't read sec key
135 gpg_host --list-secret-keys --fingerprint \
136 --with-colons --fixed-list-mode 2> /dev/null | \
137 grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null
140 # function to check for host secret key
141 check_host_keyring() {
142 fingerprint_server_key >/dev/null \
143 || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first."
146 # output key information
152 # FIXME: you shouldn't have to be root to see the host key fingerprint
155 fingerprintPGP=$(fingerprint_server_key)
156 gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprintPGP" 2>/dev/null
157 echo "OpenPGP fingerprint: $fingerprintPGP"
159 log info "You must be root to see host OpenPGP fingerprint."
163 if [ -f "${SYSDATADIR}/ssh_host_rsa_key.pub" ] ; then
164 fingerprintSSH=$(ssh-keygen -l -f "${SYSDATADIR}/ssh_host_rsa_key.pub" | \
165 awk '{ print $1, $2, $4 }')
166 echo "ssh fingerprint: $fingerprintSSH"
168 log info "SSH host key not found."
175 # update authorized_keys for users
178 # get users from command line
181 # or just look at all users if none specified
182 unames=$(getent passwd | cut -d: -f1)
188 MODE="authorized_keys"
191 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
193 # check to see if the gpg trust database has been initialized
194 if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
195 failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
198 # make sure the authorized_keys directory exists
199 mkdir -p "${SYSDATADIR}/authorized_keys"
202 for uname in $unames ; do
203 # check all specified users exist
204 if ! id "$uname" >/dev/null ; then
205 log error "----- unknown user '$uname' -----"
209 log verbose "----- user: $uname -----"
211 # make temporary directory
212 TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
214 # trap to delete temporary directory on exit
215 trap "rm -rf $TMPLOC" EXIT
217 # create temporary authorized_user_ids file
218 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
219 touch "$TMP_AUTHORIZED_USER_IDS"
221 # create temporary authorized_keys file
222 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
223 touch "$AUTHORIZED_KEYS"
225 # set restrictive permissions on the temporary files
226 # FIXME: is there a better way to do this?
228 chmod 0600 "$AUTHORIZED_KEYS"
229 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
230 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
232 # process authorized_user_ids file
233 log debug "checking for authorized_user_ids..."
234 # translating ssh-style path variables
235 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
236 if [ -s "$authorizedUserIDs" ] ; then
237 # check permissions on the authorized_user_ids file path
238 if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
239 # copy user authorized_user_ids file to temporary
241 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
243 # export needed variables
244 export AUTHORIZED_KEYS
245 export TMP_AUTHORIZED_USER_IDS
247 # process authorized_user_ids file, as monkeysphere
249 su_monkeysphere_user \
250 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
253 log debug "not processing authorized_user_ids."
256 log debug "empty or absent authorized_user_ids file."
259 # add user-controlled authorized_keys file if specified
260 # translate ssh-style path variables
261 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
262 if [ "$rawAuthorizedKeys" != 'none' ] ; then
263 log debug "checking for raw authorized_keys..."
264 if [ -s "$rawAuthorizedKeys" ] ; then
265 # check permissions on the authorized_keys file path
266 if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
267 log verbose "adding raw authorized_keys file... "
268 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
270 log debug "not adding raw authorized_keys file."
273 log debug "empty or absent authorized_keys file."
277 # move the new authorized_keys file into place
278 if [ -s "$AUTHORIZED_KEYS" ] ; then
279 # openssh appears to check the contents of the
280 # authorized_keys file as the user in question, so the
281 # file must be readable by that user at least.
283 # but in general, we don't want the user tampering with
284 # this file directly, so we'll adopt this approach: Own
285 # the file by the monkeysphere-server invoker (usually
286 # root, but should be the same uid that sshd is launched
287 # as); change the group of the file so that members of the
288 # user's group can read it.
290 # FIXME: is there a better way to do this?
291 chown $(whoami) "$AUTHORIZED_KEYS" && \
292 chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
293 chmod g+r "$AUTHORIZED_KEYS" && \
294 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}" || \
296 log error "Failed to install authorized_keys for '$uname'!"
297 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
298 # indicate that there has been a failure:
302 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
308 # destroy temporary directory
313 # generate server gpg key
325 # set default key parameter values
348 if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
349 failure "Unknown option '$1'.
350 Type '$PGRM help' for usage."
357 hostName=${1:-$(hostname -f)}
358 userID="ssh://${hostName}"
360 # check for presense of secret key
361 # FIXME: is this the proper test to be doing here?
362 fingerprint_server_key >/dev/null \
363 && failure "A key for this host already exists."
365 # prompt about key expiration if not specified
366 keyExpire=$(get_gpg_expiration "$keyExpire")
371 Key-Length: $keyLength
374 Expire-Date: $keyExpire"
376 # add the revoker field if specified
377 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
378 # FIXME: key is marked "sensitive"? is this appropriate?
379 if [ "$revoker" ] ; then
382 Revoker: 1:${revoker} sensitive"
385 echo "The following key parameters will be used for the host private key:"
386 echo "$keyParameters"
388 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
389 if [ ${OK/y/Y} != 'Y' ] ; then
394 # must include blank line!
401 log verbose "generating server key..."
402 echo "$keyParameters" | gpg_host --batch --gen-key
404 # find the key fingerprint of the newly generated key
405 fingerprint=$(fingerprint_server_key)
407 # export host ownertrust to authentication keyring
408 log verbose "setting ultimate owner trust for server key..."
409 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
411 # translate the private key to ssh format, and export to a file
413 # NOTE: assumes that the primary key is the proper key to use
415 gpg_host --export-secret-key "$fingerprint" | \
416 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
417 log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
418 ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
419 log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
420 gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
421 log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
423 # show info about new key
427 # extend the lifetime of a host key:
429 local fpr=$(fingerprint_server_key)
432 # get the new expiration date
433 extendTo=$(get_gpg_expiration "$extendTo")
435 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
442 echo "NOTE: Host key expiration date adjusted, but not yet published."
443 echo "Run '$PGRM publish-key' to publish the new expiration date."
446 # add hostname user ID to server key
454 if [ -z "$1" ] ; then
455 failure "You must specify a hostname to add."
460 fingerprint=$(fingerprint_server_key)
462 # match to only ultimately trusted user IDs
463 tmpuidMatch="u:$(echo $userID | gpg_escape)"
465 # find the index of the requsted user ID
466 # NOTE: this is based on circumstantial evidence that the order of
467 # this output is the appropriate index
468 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
469 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
470 failure "Host userID '$userID' already exists."
473 echo "The following user ID will be added to the host key:"
475 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
476 if [ ${OK/y/Y} != 'Y' ] ; then
477 failure "User ID not added."
480 # edit-key script command to add user ID
481 adduidCommand=$(cat <<EOF
490 # execute edit-key script
491 if echo "$adduidCommand" | \
492 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
494 # update the trustdb for the authentication keyring
495 gpg_authentication "--check-trustdb"
500 echo "NOTE: User ID added to key, but key not published."
501 echo "Run '$PGRM publish-key' to publish the new user ID."
503 failure "Problem adding user ID."
507 # revoke hostname user ID to server key
517 if [ -z "$1" ] ; then
518 failure "You must specify a hostname to revoke."
521 echo "WARNING: There is a known bug in this function."
522 echo "This function has been known to occasionally revoke the wrong user ID."
523 echo "Please see the following bug report for more information:"
524 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
525 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
526 if [ ${OK/y/Y} != 'Y' ] ; then
532 fingerprint=$(fingerprint_server_key)
534 # match to only ultimately trusted user IDs
535 tmpuidMatch="u:$(echo $userID | gpg_escape)"
537 # find the index of the requsted user ID
538 # NOTE: this is based on circumstantial evidence that the order of
539 # this output is the appropriate index
540 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
541 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
544 failure "No non-revoked user ID '$userID' is found."
547 echo "The following host key user ID will be revoked:"
549 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
550 if [ ${OK/y/Y} != 'Y' ] ; then
551 failure "User ID not revoked."
554 message="Hostname removed by monkeysphere-server $DATE"
556 # edit-key script command to revoke user ID
557 revuidCommand=$(cat <<EOF
569 # execute edit-key script
570 if echo "$revuidCommand" | \
571 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
573 # update the trustdb for the authentication keyring
574 gpg_authentication "--check-trustdb"
579 echo "NOTE: User ID revoked, but revocation not published."
580 echo "Run '$PGRM publish-key' to publish the revocation."
582 failure "Problem revoking user ID."
586 # publish server key to keyserver
587 publish_server_key() {
588 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
589 if [ ${OK/y/Y} != 'Y' ] ; then
590 failure "key not published."
593 # find the key fingerprint
594 fingerprint=$(fingerprint_server_key)
597 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
602 # * check on the status and validity of the key and public certificates
614 local problemsfound=0
616 # FIXME: what's the correct, cross-platform answer?
617 sshd_config=/etc/ssh/sshd_config
618 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
619 keysfound=$(echo "$seckey" | grep -c ^sec:)
621 # warn when anything is 2 months away from expiration
622 warnwindow='2 months'
623 warndate=$(advance_date $warnwindow +%s)
625 if ! id monkeysphere >/dev/null ; then
626 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
627 problemsfound=$(($problemsfound+1))
630 if ! [ -d "$SYSDATADIR" ] ; then
631 echo "! no $SYSDATADIR directory found. Please create it."
632 problemsfound=$(($problemsfound+1))
635 echo "Checking host GPG key..."
636 if (( "$keysfound" < 1 )); then
637 echo "! No host key found."
638 echo " - Recommendation: run 'monkeysphere-server gen-key'"
639 problemsfound=$(($problemsfound+1))
640 elif (( "$keysfound" > 1 )); then
641 echo "! More than one host key found?"
642 # FIXME: recommend a way to resolve this
643 problemsfound=$(($problemsfound+1))
645 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
646 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
647 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
648 # check for key expiration:
649 if [ "$expire" ]; then
650 if (( "$expire" < "$curdate" )); then
651 echo "! Host key is expired."
652 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
653 problemsfound=$(($problemsfound+1))
654 elif (( "$expire" < "$warndate" )); then
655 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
656 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
657 problemsfound=$(($problemsfound+1))
662 if [ "$create" ] && (( "$create" > "$curdate" )); then
663 echo "! Host key was created in the future(?!). Is your clock correct?"
664 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
665 problemsfound=$(($problemsfound+1))
668 # check for UserID expiration:
669 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
670 while IFS=: read create expire uid ; do
671 # FIXME: should we be doing any checking on the form
672 # of the User ID? Should we be unmangling it somehow?
674 if [ "$create" ] && (( "$create" > "$curdate" )); then
675 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
676 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
677 problemsfound=$(($problemsfound+1))
679 if [ "$expire" ] ; then
680 if (( "$expire" < "$curdate" )); then
681 echo "! User ID '$uid' is expired."
682 # FIXME: recommend a way to resolve this
683 problemsfound=$(($problemsfound+1))
684 elif (( "$expire" < "$warndate" )); then
685 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
686 # FIXME: recommend a way to resolve this
687 problemsfound=$(($problemsfound+1))
692 # FIXME: verify that the host key is properly published to the
693 # keyservers (do this with the non-privileged user)
695 # FIXME: check that there are valid, non-expired certifying signatures
696 # attached to the host key after fetching from the public keyserver
697 # (do this with the non-privileged user as well)
699 # FIXME: propose adding a revoker to the host key if none exist (do we
700 # have a way to do that after key generation?)
702 # Ensure that the ssh_host_rsa_key file is present and non-empty:
704 echo "Checking host SSH key..."
705 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
706 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
707 problemsfound=$(($problemsfound+1))
709 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
710 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
711 problemsfound=$(($problemsfound+1))
714 # propose changes needed for sshd_config (if any)
715 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
716 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
717 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
718 problemsfound=$(($problemsfound+1))
720 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
721 echo "! $sshd_config refers to some non-monkeysphere host keys:"
723 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
724 problemsfound=$(($problemsfound+1))
727 # FIXME: test (with ssh-keyscan?) that the running ssh
728 # daemon is actually offering the monkeysphere host key.
733 # FIXME: look at the ownership/privileges of the various keyrings,
734 # directories housing them, etc (what should those values be? can
735 # we make them as minimal as possible?)
737 # FIXME: look to see that the ownertrust rules are set properly on the
738 # authentication keyring
740 # FIXME: make sure that at least one identity certifier exists
742 # FIXME: look at the timestamps on the monkeysphere-generated
743 # authorized_keys files -- warn if they seem out-of-date.
745 # FIXME: check for a cronjob that updates monkeysphere-generated
749 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
750 # Ensure that User ID authentication is enabled:
751 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
752 echo "! $sshd_config does not point to monkeysphere authorized keys."
753 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
754 problemsfound=$(($problemsfound+1))
756 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
757 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
758 echo "$badauthorizedkeys"
759 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
760 problemsfound=$(($problemsfound+1))
763 if [ "$problemsfound" -gt 0 ]; then
764 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
765 echo " monkeysphere-server diagnostics"
767 echo "Everything seems to be in order!"
771 # retrieve key from web of trust, import it into the host keyring, and
772 # ltsign the key in the host keyring so that it may certify other keys
782 # set default values for trust depth and domain
803 if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
804 failure "Unknown option '$1'.
805 Type '$PGRM help' for usage."
813 if [ -z "$keyID" ] ; then
814 failure "You must specify the key ID of a key to add, or specify a file to read the key from."
816 if [ -f "$keyID" ] ; then
817 echo "Reading key from file '$keyID':"
818 importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
819 # FIXME: if this is tried when the key database is not
820 # up-to-date, i got these errors (using set -x):
822 # ++ su -m monkeysphere -c '\''gpg --import'\''
823 # Warning: using insecure memory!
824 # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
825 # gpg: Total number processed: 1
826 # gpg: imported: 1 (RSA: 1)
827 # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
828 # gpg: failed to rebuild keyring cache: Permission denied
829 # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
830 # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
831 # gpg: next trustdb check due at 2009-01-10'
832 # + failure 'could not read key from '\''/root/dkg.gpg'\'''
833 # + echo 'could not read key from '\''/root/dkg.gpg'\'''
835 keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
836 if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
837 failure "Expected there to be a single gpg key in the file."
840 # get the key from the key server
841 gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
847 # get the full fingerprint of a key ID
848 fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
849 grep '^fpr:' | grep "$keyID" | cut -d: -f10)
851 if [ -z "$fingerprint" ] ; then
852 failure "Key '$keyID' not found."
857 gpg_authentication "--fingerprint 0x${fingerprint}!"
859 echo "Are you sure you want to add the above key as a"
860 read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
861 if [ "${OK/y/Y}" != 'Y' ] ; then
862 failure "Identity certifier not added."
865 # export the key to the host keyring
866 gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
868 if [ "$trust" = marginal ]; then
870 elif [ "$trust" = full ]; then
873 failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
877 # NOTE: *all* user IDs will be ltsigned
878 ltsignCommand=$(cat <<EOF
890 if echo "$ltsignCommand" | \
891 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
893 # update the trustdb for the authentication keyring
894 gpg_authentication "--check-trustdb"
897 echo "Identity certifier added."
899 failure "Problem adding identify certifier."
903 # delete a certifiers key from the host keyring
909 if [ -z "$keyID" ] ; then
910 failure "You must specify the key ID of a key to remove."
913 if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
914 read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
915 if [ "${OK/y/Y}" != 'Y' ] ; then
916 failure "Identity certifier not removed."
922 # delete the requested key
923 if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
924 # delete key from host keyring as well
925 gpg_host --delete-key --batch --yes "0x${keyID}!"
927 # update the trustdb for the authentication keyring
928 gpg_authentication "--check-trustdb"
931 echo "Identity certifier removed."
933 failure "Problem removing identity certifier."
937 # list the host certifiers
942 # find trusted keys in authentication keychain
943 keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
944 grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
947 for key in $keys ; do
948 gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
952 # issue command to gpg-authentication keyring
953 gpg_authentication_cmd() {
954 gpg_authentication "$@"
957 ########################################################################
959 ########################################################################
961 # unset variables that should be defined only in config file
963 unset AUTHORIZED_USER_IDS
964 unset RAW_AUTHORIZED_KEYS
965 unset MONKEYSPHERE_USER
967 # load configuration file
968 [ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
970 # set empty config variable with ones from the environment, or with
972 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
973 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
974 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
975 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
976 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
979 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
980 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
981 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
982 GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
984 # export variables needed in su invocation
987 export MONKEYSPHERE_USER
990 export CHECK_KEYSERVER
991 export REQUIRED_USER_KEY_CAPABILITY
992 export GNUPGHOME_HOST
993 export GNUPGHOME_AUTHENTICATION
998 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
1002 'update-users'|'update-user'|'u')
1019 'add-hostname'|'add-name'|'n+')
1025 'revoke-hostname'|'revoke-name'|'n-')
1028 revoke_hostname "$@"
1031 'show-key'|'show'|'s')
1035 'publish-key'|'publish'|'p')
1046 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
1052 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1055 remove_certifier "$@"
1058 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1061 list_certifiers "$@"
1064 'gpg-authentication-cmd')
1066 gpg_authentication_cmd "$@"
1069 '--help'|'help'|'-h'|'h'|'?')
1074 failure "Unknown command: '$COMMAND'
1075 Type '$PGRM help' for usage."