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
69 version (v) show version number
75 # function to run command as monkeysphere user
76 su_monkeysphere_user() {
77 # if the current user is the monkeysphere user, then just eval
79 if [ $(id -un) = "$MONKEYSPHERE_USER" ] ; then
82 # otherwise su command as monkeysphere user
84 su "$MONKEYSPHERE_USER" -c "$@"
88 # function to interact with the host gnupg keyring
92 GNUPGHOME="$GNUPGHOME_HOST"
95 # NOTE: we supress this warning because we need the monkeysphere
96 # user to be able to read the host pubring. we realize this might
97 # be problematic, but it's the simplest solution, without too much
99 gpg --no-permission-warning "$@"
102 # always reset the permissions on the host pubring so that the
103 # monkeysphere user can read the trust signatures
104 chgrp "$MONKEYSPHERE_USER" "${GNUPGHOME_HOST}/pubring.gpg"
105 chmod g+r "${GNUPGHOME_HOST}/pubring.gpg"
110 # function to interact with the authentication gnupg keyring
111 # FIXME: this function requires basically accepts only a single
112 # argument because of problems with quote expansion. this needs to be
114 gpg_authentication() {
115 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
118 su_monkeysphere_user "gpg $@"
121 # check if user is root
123 [ $(id -u 2>/dev/null) = '0' ]
126 # check that user is root, for functions that require root access
128 is_root || failure "You must be root to run this command."
131 # output just key fingerprint
132 fingerprint_server_key() {
133 # set the pipefail option so functions fails if can't read sec key
136 gpg_host --list-secret-keys --fingerprint \
137 --with-colons --fixed-list-mode 2> /dev/null | \
138 grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null
141 # function to check for host secret key
142 check_host_keyring() {
143 fingerprint_server_key >/dev/null \
144 || failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first."
147 # output key information
153 # FIXME: you shouldn't have to be root to see the host key fingerprint
156 fingerprintPGP=$(fingerprint_server_key)
157 gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprintPGP" 2>/dev/null
158 echo "OpenPGP fingerprint: $fingerprintPGP"
160 log info "You must be root to see host OpenPGP fingerprint."
164 if [ -f "${SYSDATADIR}/ssh_host_rsa_key.pub" ] ; then
165 fingerprintSSH=$(ssh-keygen -l -f "${SYSDATADIR}/ssh_host_rsa_key.pub" | \
166 awk '{ print $1, $2, $4 }')
167 echo "ssh fingerprint: $fingerprintSSH"
169 log info "SSH host key not found."
176 # update authorized_keys for users
179 # get users from command line
182 # or just look at all users if none specified
183 unames=$(getent passwd | cut -d: -f1)
189 MODE="authorized_keys"
192 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
194 # check to see if the gpg trust database has been initialized
195 if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
196 failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
199 # make sure the authorized_keys directory exists
200 mkdir -p "${SYSDATADIR}/authorized_keys"
203 for uname in $unames ; do
204 # check all specified users exist
205 if ! id "$uname" >/dev/null ; then
206 log error "----- unknown user '$uname' -----"
210 log verbose "----- user: $uname -----"
212 # make temporary directory
213 TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
215 # trap to delete temporary directory on exit
216 trap "rm -rf $TMPLOC" EXIT
218 # create temporary authorized_user_ids file
219 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
220 touch "$TMP_AUTHORIZED_USER_IDS"
222 # create temporary authorized_keys file
223 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
224 touch "$AUTHORIZED_KEYS"
226 # set restrictive permissions on the temporary files
227 # FIXME: is there a better way to do this?
229 chmod 0600 "$AUTHORIZED_KEYS"
230 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
231 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
233 # process authorized_user_ids file
234 log debug "checking for authorized_user_ids..."
235 # translating ssh-style path variables
236 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
237 if [ -s "$authorizedUserIDs" ] ; then
238 # check permissions on the authorized_user_ids file path
239 if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
240 # copy user authorized_user_ids file to temporary
242 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
244 # export needed variables
245 export AUTHORIZED_KEYS
246 export TMP_AUTHORIZED_USER_IDS
248 # process authorized_user_ids file, as monkeysphere
250 su_monkeysphere_user \
251 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
254 log debug "not processing authorized_user_ids."
257 log debug "empty or absent authorized_user_ids file."
260 # add user-controlled authorized_keys file if specified
261 # translate ssh-style path variables
262 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
263 if [ "$rawAuthorizedKeys" != 'none' ] ; then
264 log debug "checking for raw authorized_keys..."
265 if [ -s "$rawAuthorizedKeys" ] ; then
266 # check permissions on the authorized_keys file path
267 if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
268 log verbose "adding raw authorized_keys file... "
269 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
271 log debug "not adding raw authorized_keys file."
274 log debug "empty or absent authorized_keys file."
278 # move the new authorized_keys file into place
279 if [ -s "$AUTHORIZED_KEYS" ] ; then
280 # openssh appears to check the contents of the
281 # authorized_keys file as the user in question, so the
282 # file must be readable by that user at least.
284 # but in general, we don't want the user tampering with
285 # this file directly, so we'll adopt this approach: Own
286 # the file by the monkeysphere-server invoker (usually
287 # root, but should be the same uid that sshd is launched
288 # as); change the group of the file so that members of the
289 # user's group can read it.
291 # FIXME: is there a better way to do this?
292 chown $(whoami) "$AUTHORIZED_KEYS" && \
293 chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
294 chmod g+r "$AUTHORIZED_KEYS" && \
295 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}" || \
297 log error "Failed to install authorized_keys for '$uname'!"
298 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
299 # indicate that there has been a failure:
303 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
309 # destroy temporary directory
314 # generate server gpg key
326 # set default key parameter values
349 if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
350 failure "Unknown option '$1'.
351 Type '$PGRM help' for usage."
358 hostName=${1:-$(hostname -f)}
359 userID="ssh://${hostName}"
361 # check for presense of secret key
362 # FIXME: is this the proper test to be doing here?
363 fingerprint_server_key >/dev/null \
364 && failure "A key for this host already exists."
366 # prompt about key expiration if not specified
367 keyExpire=$(get_gpg_expiration "$keyExpire")
372 Key-Length: $keyLength
375 Expire-Date: $keyExpire"
377 # add the revoker field if specified
378 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
379 # FIXME: key is marked "sensitive"? is this appropriate?
380 if [ "$revoker" ] ; then
383 Revoker: 1:${revoker} sensitive"
386 echo "The following key parameters will be used for the host private key:"
387 echo "$keyParameters"
389 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
390 if [ ${OK/y/Y} != 'Y' ] ; then
395 # must include blank line!
402 log verbose "generating server key..."
403 echo "$keyParameters" | gpg_host --batch --gen-key
405 # find the key fingerprint of the newly generated key
406 fingerprint=$(fingerprint_server_key)
408 # export host ownertrust to authentication keyring
409 log verbose "setting ultimate owner trust for server key..."
410 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
412 # translate the private key to ssh format, and export to a file
414 # NOTE: assumes that the primary key is the proper key to use
416 gpg_host --export-secret-key "$fingerprint" | \
417 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
418 log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
419 ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
420 log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
421 gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
422 log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
424 # show info about new key
428 # extend the lifetime of a host key:
430 local fpr=$(fingerprint_server_key)
433 # get the new expiration date
434 extendTo=$(get_gpg_expiration "$extendTo")
436 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
443 echo "NOTE: Host key expiration date adjusted, but not yet published."
444 echo "Run '$PGRM publish-key' to publish the new expiration date."
447 # add hostname user ID to server key
455 if [ -z "$1" ] ; then
456 failure "You must specify a hostname to add."
461 fingerprint=$(fingerprint_server_key)
463 # match to only ultimately trusted user IDs
464 tmpuidMatch="u:$(echo $userID | gpg_escape)"
466 # find the index of the requsted user ID
467 # NOTE: this is based on circumstantial evidence that the order of
468 # this output is the appropriate index
469 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
470 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
471 failure "Host userID '$userID' already exists."
474 echo "The following user ID will be added to the host key:"
476 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
477 if [ ${OK/y/Y} != 'Y' ] ; then
478 failure "User ID not added."
481 # edit-key script command to add user ID
482 adduidCommand=$(cat <<EOF
491 # execute edit-key script
492 if echo "$adduidCommand" | \
493 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
495 # update the trustdb for the authentication keyring
496 gpg_authentication "--check-trustdb"
501 echo "NOTE: User ID added to key, but key not published."
502 echo "Run '$PGRM publish-key' to publish the new user ID."
504 failure "Problem adding user ID."
508 # revoke hostname user ID to server key
518 if [ -z "$1" ] ; then
519 failure "You must specify a hostname to revoke."
522 echo "WARNING: There is a known bug in this function."
523 echo "This function has been known to occasionally revoke the wrong user ID."
524 echo "Please see the following bug report for more information:"
525 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
526 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
527 if [ ${OK/y/Y} != 'Y' ] ; then
533 fingerprint=$(fingerprint_server_key)
535 # match to only ultimately trusted user IDs
536 tmpuidMatch="u:$(echo $userID | gpg_escape)"
538 # find the index of the requsted user ID
539 # NOTE: this is based on circumstantial evidence that the order of
540 # this output is the appropriate index
541 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
542 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
545 failure "No non-revoked user ID '$userID' is found."
548 echo "The following host key user ID will be revoked:"
550 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
551 if [ ${OK/y/Y} != 'Y' ] ; then
552 failure "User ID not revoked."
555 message="Hostname removed by monkeysphere-server $DATE"
557 # edit-key script command to revoke user ID
558 revuidCommand=$(cat <<EOF
570 # execute edit-key script
571 if echo "$revuidCommand" | \
572 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
574 # update the trustdb for the authentication keyring
575 gpg_authentication "--check-trustdb"
580 echo "NOTE: User ID revoked, but revocation not published."
581 echo "Run '$PGRM publish-key' to publish the revocation."
583 failure "Problem revoking user ID."
587 # publish server key to keyserver
588 publish_server_key() {
589 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
590 if [ ${OK/y/Y} != 'Y' ] ; then
591 failure "key not published."
594 # find the key fingerprint
595 fingerprint=$(fingerprint_server_key)
598 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
603 # * check on the status and validity of the key and public certificates
615 local problemsfound=0
617 # FIXME: what's the correct, cross-platform answer?
618 sshd_config=/etc/ssh/sshd_config
619 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
620 keysfound=$(echo "$seckey" | grep -c ^sec:)
622 # warn when anything is 2 months away from expiration
623 warnwindow='2 months'
624 warndate=$(advance_date $warnwindow +%s)
626 if ! id monkeysphere >/dev/null ; then
627 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
628 problemsfound=$(($problemsfound+1))
631 if ! [ -d "$SYSDATADIR" ] ; then
632 echo "! no $SYSDATADIR directory found. Please create it."
633 problemsfound=$(($problemsfound+1))
636 echo "Checking host GPG key..."
637 if (( "$keysfound" < 1 )); then
638 echo "! No host key found."
639 echo " - Recommendation: run 'monkeysphere-server gen-key'"
640 problemsfound=$(($problemsfound+1))
641 elif (( "$keysfound" > 1 )); then
642 echo "! More than one host key found?"
643 # FIXME: recommend a way to resolve this
644 problemsfound=$(($problemsfound+1))
646 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
647 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
648 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
649 # check for key expiration:
650 if [ "$expire" ]; then
651 if (( "$expire" < "$curdate" )); then
652 echo "! Host key is expired."
653 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
654 problemsfound=$(($problemsfound+1))
655 elif (( "$expire" < "$warndate" )); then
656 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
657 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
658 problemsfound=$(($problemsfound+1))
663 if [ "$create" ] && (( "$create" > "$curdate" )); then
664 echo "! Host key was created in the future(?!). Is your clock correct?"
665 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
666 problemsfound=$(($problemsfound+1))
669 # check for UserID expiration:
670 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
671 while IFS=: read create expire uid ; do
672 # FIXME: should we be doing any checking on the form
673 # of the User ID? Should we be unmangling it somehow?
675 if [ "$create" ] && (( "$create" > "$curdate" )); then
676 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
677 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
678 problemsfound=$(($problemsfound+1))
680 if [ "$expire" ] ; then
681 if (( "$expire" < "$curdate" )); then
682 echo "! User ID '$uid' is expired."
683 # FIXME: recommend a way to resolve this
684 problemsfound=$(($problemsfound+1))
685 elif (( "$expire" < "$warndate" )); then
686 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
687 # FIXME: recommend a way to resolve this
688 problemsfound=$(($problemsfound+1))
693 # FIXME: verify that the host key is properly published to the
694 # keyservers (do this with the non-privileged user)
696 # FIXME: check that there are valid, non-expired certifying signatures
697 # attached to the host key after fetching from the public keyserver
698 # (do this with the non-privileged user as well)
700 # FIXME: propose adding a revoker to the host key if none exist (do we
701 # have a way to do that after key generation?)
703 # Ensure that the ssh_host_rsa_key file is present and non-empty:
705 echo "Checking host SSH key..."
706 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
707 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
708 problemsfound=$(($problemsfound+1))
710 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
711 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
712 problemsfound=$(($problemsfound+1))
715 # propose changes needed for sshd_config (if any)
716 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
717 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
718 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
719 problemsfound=$(($problemsfound+1))
721 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
722 echo "! $sshd_config refers to some non-monkeysphere host keys:"
724 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
725 problemsfound=$(($problemsfound+1))
728 # FIXME: test (with ssh-keyscan?) that the running ssh
729 # daemon is actually offering the monkeysphere host key.
734 # FIXME: look at the ownership/privileges of the various keyrings,
735 # directories housing them, etc (what should those values be? can
736 # we make them as minimal as possible?)
738 # FIXME: look to see that the ownertrust rules are set properly on the
739 # authentication keyring
741 # FIXME: make sure that at least one identity certifier exists
743 # FIXME: look at the timestamps on the monkeysphere-generated
744 # authorized_keys files -- warn if they seem out-of-date.
746 # FIXME: check for a cronjob that updates monkeysphere-generated
750 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
751 # Ensure that User ID authentication is enabled:
752 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
753 echo "! $sshd_config does not point to monkeysphere authorized keys."
754 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
755 problemsfound=$(($problemsfound+1))
757 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
758 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
759 echo "$badauthorizedkeys"
760 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
761 problemsfound=$(($problemsfound+1))
764 if [ "$problemsfound" -gt 0 ]; then
765 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
766 echo " monkeysphere-server diagnostics"
768 echo "Everything seems to be in order!"
772 # retrieve key from web of trust, import it into the host keyring, and
773 # ltsign the key in the host keyring so that it may certify other keys
783 # set default values for trust depth and domain
804 if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
805 failure "Unknown option '$1'.
806 Type '$PGRM help' for usage."
814 if [ -z "$keyID" ] ; then
815 failure "You must specify the key ID of a key to add, or specify a file to read the key from."
817 if [ -f "$keyID" ] ; then
818 echo "Reading key from file '$keyID':"
819 importinfo=$(gpg_authentication "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
820 # FIXME: if this is tried when the key database is not
821 # up-to-date, i got these errors (using set -x):
823 # ++ su -m monkeysphere -c '\''gpg --import'\''
824 # Warning: using insecure memory!
825 # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
826 # gpg: Total number processed: 1
827 # gpg: imported: 1 (RSA: 1)
828 # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
829 # gpg: failed to rebuild keyring cache: Permission denied
830 # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
831 # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
832 # gpg: next trustdb check due at 2009-01-10'
833 # + failure 'could not read key from '\''/root/dkg.gpg'\'''
834 # + echo 'could not read key from '\''/root/dkg.gpg'\'''
836 keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
837 if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
838 failure "Expected there to be a single gpg key in the file."
841 # get the key from the key server
842 gpg_authentication "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
848 # get the full fingerprint of a key ID
849 fingerprint=$(gpg_authentication "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
850 grep '^fpr:' | grep "$keyID" | cut -d: -f10)
852 if [ -z "$fingerprint" ] ; then
853 failure "Key '$keyID' not found."
858 gpg_authentication "--fingerprint 0x${fingerprint}!"
860 echo "Are you sure you want to add the above key as a"
861 read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
862 if [ "${OK/y/Y}" != 'Y' ] ; then
863 failure "Identity certifier not added."
866 # export the key to the host keyring
867 gpg_authentication "--export 0x${fingerprint}!" | gpg_host --import
869 if [ "$trust" = marginal ]; then
871 elif [ "$trust" = full ]; then
874 failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
878 # NOTE: *all* user IDs will be ltsigned
879 ltsignCommand=$(cat <<EOF
891 if echo "$ltsignCommand" | \
892 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
894 # update the trustdb for the authentication keyring
895 gpg_authentication "--check-trustdb"
898 echo "Identity certifier added."
900 failure "Problem adding identify certifier."
904 # delete a certifiers key from the host keyring
910 if [ -z "$keyID" ] ; then
911 failure "You must specify the key ID of a key to remove."
914 if gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
915 read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
916 if [ "${OK/y/Y}" != 'Y' ] ; then
917 failure "Identity certifier not removed."
923 # delete the requested key
924 if gpg_authentication "--delete-key --batch --yes 0x${keyID}!" ; then
925 # delete key from host keyring as well
926 gpg_host --delete-key --batch --yes "0x${keyID}!"
928 # update the trustdb for the authentication keyring
929 gpg_authentication "--check-trustdb"
932 echo "Identity certifier removed."
934 failure "Problem removing identity certifier."
938 # list the host certifiers
943 # find trusted keys in authentication keychain
944 keys=$(gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
945 grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
948 for key in $keys ; do
949 gpg_authentication "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
953 # issue command to gpg-authentication keyring
954 gpg_authentication_cmd() {
955 gpg_authentication "$@"
958 ########################################################################
960 ########################################################################
962 # unset variables that should be defined only in config file
964 unset AUTHORIZED_USER_IDS
965 unset RAW_AUTHORIZED_KEYS
966 unset MONKEYSPHERE_USER
968 # load configuration file
969 [ -e ${MONKEYSPHERE_SERVER_CONFIG:="${SYSCONFIGDIR}/monkeysphere-server.conf"} ] && . "$MONKEYSPHERE_SERVER_CONFIG"
971 # set empty config variable with ones from the environment, or with
973 LOG_LEVEL=${MONKEYSPHERE_LOG_LEVEL:=${LOG_LEVEL:="INFO"}}
974 KEYSERVER=${MONKEYSPHERE_KEYSERVER:=${KEYSERVER:="pool.sks-keyservers.net"}}
975 AUTHORIZED_USER_IDS=${MONKEYSPHERE_AUTHORIZED_USER_IDS:=${AUTHORIZED_USER_IDS:="%h/.monkeysphere/authorized_user_ids"}}
976 RAW_AUTHORIZED_KEYS=${MONKEYSPHERE_RAW_AUTHORIZED_KEYS:=${RAW_AUTHORIZED_KEYS:="%h/.ssh/authorized_keys"}}
977 MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkeysphere"}}
980 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
981 REQUIRED_USER_KEY_CAPABILITY=${MONKEYSPHERE_REQUIRED_USER_KEY_CAPABILITY:="a"}
982 GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/gnupg-host"}
983 GNUPGHOME_AUTHENTICATION=${MONKEYSPHERE_GNUPGHOME_AUTHENTICATION:="${SYSDATADIR}/gnupg-authentication"}
985 # export variables needed in su invocation
988 export MONKEYSPHERE_USER
991 export CHECK_KEYSERVER
992 export REQUIRED_USER_KEY_CAPABILITY
993 export GNUPGHOME_HOST
994 export GNUPGHOME_AUTHENTICATION
999 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
1003 'update-users'|'update-user'|'u')
1020 'add-hostname'|'add-name'|'n+')
1026 'revoke-hostname'|'revoke-name'|'n-')
1029 revoke_hostname "$@"
1032 'show-key'|'show'|'s')
1036 'publish-key'|'publish'|'p')
1047 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
1053 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1056 remove_certifier "$@"
1059 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1062 list_certifiers "$@"
1065 'gpg-authentication-cmd')
1067 gpg_authentication_cmd "$@"
1074 '--help'|'help'|'-h'|'h'|'?')
1079 failure "Unknown command: '$COMMAND'
1080 Type '$PGRM help' for usage."