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 $@"
120 # function to check for host secret keys
121 # fails if host sec key exists, exits true otherwise
122 check_host_keyring() {
123 if ! gpg_host --list-secret-keys --fingerprint \
124 --with-colons --fixed-list-mode 2>/dev/null | grep -q '^sec:' ; then
126 failure "You don't appear to have a Monkeysphere host key on this server. Please run 'monkeysphere-server gen-key' first."
130 # output just key fingerprint
131 fingerprint_server_key() {
132 gpg_host --list-secret-keys --fingerprint \
133 --with-colons --fixed-list-mode 2> /dev/null | \
134 grep '^fpr:' | head -1 | cut -d: -f10
137 # output key information
142 fingerprint=$(fingerprint_server_key)
143 gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprint"
145 # do some crazy "Here Strings" redirection to get the key to
146 # ssh-keygen, since it doesn't read from stdin cleanly
147 echo -n "ssh fingerprint: "
148 ssh-keygen -l -f /dev/stdin \
149 <<<$(gpg_authentication "--export $fingerprint" | \
150 openpgp2ssh "$fingerprint" 2>/dev/null) | \
151 awk '{ print $1, $2, $4 }'
152 echo -n "OpenPGP fingerprint: "
156 # update authorized_keys for users
159 # get users from command line
162 # or just look at all users if none specified
163 unames=$(getent passwd | cut -d: -f1)
169 MODE="authorized_keys"
172 GNUPGHOME="$GNUPGHOME_AUTHENTICATION"
174 # check to see if the gpg trust database has been initialized
175 if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
176 failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
179 # make sure the authorized_keys directory exists
180 mkdir -p "${SYSDATADIR}/authorized_keys"
183 for uname in $unames ; do
184 # check all specified users exist
185 if ! id "$uname" >/dev/null ; then
186 log error "----- unknown user '$uname' -----"
190 log verbose "----- user: $uname -----"
192 # make temporary directory
193 TMPLOC=$(mktemp -d ${MSTMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
195 # trap to delete temporary directory on exit
196 trap "rm -rf $TMPLOC" EXIT
198 # create temporary authorized_user_ids file
199 TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
200 touch "$TMP_AUTHORIZED_USER_IDS"
202 # create temporary authorized_keys file
203 AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
204 touch "$AUTHORIZED_KEYS"
206 # set restrictive permissions on the temporary files
207 # FIXME: is there a better way to do this?
209 chmod 0600 "$AUTHORIZED_KEYS"
210 chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
211 chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
213 # process authorized_user_ids file
214 log debug "checking for authorized_user_ids..."
215 # translating ssh-style path variables
216 authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
217 if [ -s "$authorizedUserIDs" ] ; then
218 # check permissions on the authorized_user_ids file path
219 if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
220 # copy user authorized_user_ids file to temporary
222 cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
224 # export needed variables
225 export AUTHORIZED_KEYS
226 export TMP_AUTHORIZED_USER_IDS
228 # process authorized_user_ids file, as monkeysphere
230 su_monkeysphere_user \
231 ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
234 log debug "not processing authorized_user_ids."
237 log debug "empty or absent authorized_user_ids file."
240 # add user-controlled authorized_keys file if specified
241 # translate ssh-style path variables
242 rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
243 if [ "$rawAuthorizedKeys" != 'none' ] ; then
244 log debug "checking for raw authorized_keys..."
245 if [ -s "$rawAuthorizedKeys" ] ; then
246 # check permissions on the authorized_keys file path
247 if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
248 log verbose "adding raw authorized_keys file... "
249 cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
251 log debug "not adding raw authorized_keys file."
254 log debug "empty or absent authorized_keys file."
258 # move the new authorized_keys file into place
259 if [ -s "$AUTHORIZED_KEYS" ] ; then
260 # openssh appears to check the contents of the
261 # authorized_keys file as the user in question, so the
262 # file must be readable by that user at least.
264 # but in general, we don't want the user tampering with
265 # this file directly, so we'll adopt this approach: Own
266 # the file by the monkeysphere-server invoker (usually
267 # root, but should be the same uid that sshd is launched
268 # as); change the group of the file so that members of the
269 # user's group can read it.
271 # FIXME: is there a better way to do this?
272 chown $(whoami) "$AUTHORIZED_KEYS" && \
273 chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
274 chmod g+r "$AUTHORIZED_KEYS" && \
275 mv -f "$AUTHORIZED_KEYS" "${SYSDATADIR}/authorized_keys/${uname}" || \
277 log error "Failed to install authorized_keys for '$uname'!"
278 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
279 # indicate that there has been a failure:
283 rm -f "${SYSDATADIR}/authorized_keys/${uname}"
289 # destroy temporary directory
294 # generate server gpg key
306 # set default key parameter values
314 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?"
316 if [ $? != 0 ] ; then
320 # Note the quotes around `$TEMP': they are essential!
346 hostName=${1:-$(hostname -f)}
347 userID="ssh://${hostName}"
349 # check for presense of key with user ID
350 # FIXME: is this the proper test to be doing here?
351 if gpg_host --list-key ="$userID" > /dev/null 2>&1 ; then
352 failure "Key for '$userID' already exists"
355 # prompt about key expiration if not specified
356 keyExpire=$(get_gpg_expiration "$keyExpire")
359 keyParameters=$(cat <<EOF
361 Key-Length: $keyLength
364 Expire-Date: $keyExpire
368 # add the revoker field if specified
369 # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
370 # FIXME: key is marked "sensitive"? is this appropriate?
371 if [ "$revoker" ] ; then
372 keyParameters="${keyParameters}"$(cat <<EOF
373 Revoker: 1:$revoker sensitive
378 echo "The following key parameters will be used for the host private key:"
379 echo "$keyParameters"
381 read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
382 if [ ${OK/y/Y} != 'Y' ] ; then
387 keyParameters="${keyParameters}"$(cat <<EOF
394 log verbose "generating server key..."
395 echo "$keyParameters" | gpg_host --batch --gen-key
397 # output the server fingerprint
398 fingerprint_server_key "=${userID}"
400 # find the key fingerprint of the newly generated key
401 fingerprint=$(fingerprint_server_key)
403 # export host ownertrust to authentication keyring
404 log verbose "setting ultimate owner trust for server key..."
405 echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
407 # translate the private key to ssh format, and export to a file
409 # NOTE: assumes that the primary key is the proper key to use
411 gpg_host --export-secret-key "$fingerprint" | \
412 openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
413 log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
414 ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
415 log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
416 gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
417 log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
420 # extend the lifetime of a host key:
422 local fpr=$(fingerprint_server_key)
425 # get the new expiration date
426 extendTo=$(get_gpg_expiration "$extendTo")
428 gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF
435 echo "NOTE: Host key expiration date adjusted, but not yet published."
436 echo "Run '$PGRM publish-key' to publish the new expiration date."
439 # add hostname user ID to server key
447 if [ -z "$1" ] ; then
448 failure "You must specify a hostname to add."
453 fingerprint=$(fingerprint_server_key)
455 # match to only ultimately trusted user IDs
456 tmpuidMatch="u:$(echo $userID | gpg_escape)"
458 # find the index of the requsted user ID
459 # NOTE: this is based on circumstantial evidence that the order of
460 # this output is the appropriate index
461 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
462 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
463 failure "Host userID '$userID' already exists."
466 echo "The following user ID will be added to the host key:"
468 read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
469 if [ ${OK/y/Y} != 'Y' ] ; then
470 failure "User ID not added."
473 # edit-key script command to add user ID
474 adduidCommand=$(cat <<EOF
483 # execute edit-key script
484 if echo "$adduidCommand" | \
485 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
487 # update the trustdb for the authentication keyring
488 gpg_authentication "--check-trustdb"
493 echo "NOTE: User ID added to key, but key not published."
494 echo "Run '$PGRM publish-key' to publish the new user ID."
496 failure "Problem adding user ID."
500 # revoke hostname user ID to server key
510 if [ -z "$1" ] ; then
511 failure "You must specify a hostname to revoke."
514 echo "WARNING: There is a known bug in this function."
515 echo "This function has been known to occasionally revoke the wrong user ID."
516 echo "Please see the following bug report for more information:"
517 echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
518 read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
519 if [ ${OK/y/Y} != 'Y' ] ; then
525 fingerprint=$(fingerprint_server_key)
527 # match to only ultimately trusted user IDs
528 tmpuidMatch="u:$(echo $userID | gpg_escape)"
530 # find the index of the requsted user ID
531 # NOTE: this is based on circumstantial evidence that the order of
532 # this output is the appropriate index
533 if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
534 | egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
537 failure "No non-revoked user ID '$userID' is found."
540 echo "The following host key user ID will be revoked:"
542 read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
543 if [ ${OK/y/Y} != 'Y' ] ; then
544 failure "User ID not revoked."
547 message="Hostname removed by monkeysphere-server $DATE"
549 # edit-key script command to revoke user ID
550 revuidCommand=$(cat <<EOF
562 # execute edit-key script
563 if echo "$revuidCommand" | \
564 gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
566 # update the trustdb for the authentication keyring
567 gpg_authentication "--check-trustdb"
572 echo "NOTE: User ID revoked, but revocation not published."
573 echo "Run '$PGRM publish-key' to publish the revocation."
575 failure "Problem revoking user ID."
579 # publish server key to keyserver
580 publish_server_key() {
581 read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
582 if [ ${OK/y/Y} != 'Y' ] ; then
583 failure "key not published."
586 # find the key fingerprint
587 fingerprint=$(fingerprint_server_key)
590 gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
595 # * check on the status and validity of the key and public certificates
607 local problemsfound=0
609 # FIXME: what's the correct, cross-platform answer?
610 sshd_config=/etc/ssh/sshd_config
611 seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
612 keysfound=$(echo "$seckey" | grep -c ^sec:)
614 # warn when anything is 2 months away from expiration
615 warnwindow='2 months'
616 warndate=$(advance_date $warnwindow +%s)
618 if ! id monkeysphere >/dev/null ; then
619 echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
620 problemsfound=$(($problemsfound+1))
623 if ! [ -d "$SYSDATADIR" ] ; then
624 echo "! no $SYSDATADIR directory found. Please create it."
625 problemsfound=$(($problemsfound+1))
628 echo "Checking host GPG key..."
629 if (( "$keysfound" < 1 )); then
630 echo "! No host key found."
631 echo " - Recommendation: run 'monkeysphere-server gen-key'"
632 problemsfound=$(($problemsfound+1))
633 elif (( "$keysfound" > 1 )); then
634 echo "! More than one host key found?"
635 # FIXME: recommend a way to resolve this
636 problemsfound=$(($problemsfound+1))
638 create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
639 expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
640 fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
641 # check for key expiration:
642 if [ "$expire" ]; then
643 if (( "$expire" < "$curdate" )); then
644 echo "! Host key is expired."
645 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
646 problemsfound=$(($problemsfound+1))
647 elif (( "$expire" < "$warndate" )); then
648 echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
649 echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
650 problemsfound=$(($problemsfound+1))
655 if [ "$create" ] && (( "$create" > "$curdate" )); then
656 echo "! Host key was created in the future(?!). Is your clock correct?"
657 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
658 problemsfound=$(($problemsfound+1))
661 # check for UserID expiration:
662 echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
663 while IFS=: read create expire uid ; do
664 # FIXME: should we be doing any checking on the form
665 # of the User ID? Should we be unmangling it somehow?
667 if [ "$create" ] && (( "$create" > "$curdate" )); then
668 echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
669 echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
670 problemsfound=$(($problemsfound+1))
672 if [ "$expire" ] ; then
673 if (( "$expire" < "$curdate" )); then
674 echo "! User ID '$uid' is expired."
675 # FIXME: recommend a way to resolve this
676 problemsfound=$(($problemsfound+1))
677 elif (( "$expire" < "$warndate" )); then
678 echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
679 # FIXME: recommend a way to resolve this
680 problemsfound=$(($problemsfound+1))
685 # FIXME: verify that the host key is properly published to the
686 # keyservers (do this with the non-privileged user)
688 # FIXME: check that there are valid, non-expired certifying signatures
689 # attached to the host key after fetching from the public keyserver
690 # (do this with the non-privileged user as well)
692 # FIXME: propose adding a revoker to the host key if none exist (do we
693 # have a way to do that after key generation?)
695 # Ensure that the ssh_host_rsa_key file is present and non-empty:
697 echo "Checking host SSH key..."
698 if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
699 echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
700 problemsfound=$(($problemsfound+1))
702 if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
703 echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
704 problemsfound=$(($problemsfound+1))
707 # propose changes needed for sshd_config (if any)
708 if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
709 echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
710 echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
711 problemsfound=$(($problemsfound+1))
713 if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
714 echo "! $sshd_config refers to some non-monkeysphere host keys:"
716 echo " - Recommendation: remove the above HostKey lines from $sshd_config"
717 problemsfound=$(($problemsfound+1))
720 # FIXME: test (with ssh-keyscan?) that the running ssh
721 # daemon is actually offering the monkeysphere host key.
726 # FIXME: look at the ownership/privileges of the various keyrings,
727 # directories housing them, etc (what should those values be? can
728 # we make them as minimal as possible?)
730 # FIXME: look to see that the ownertrust rules are set properly on the
731 # authentication keyring
733 # FIXME: make sure that at least one identity certifier exists
735 # FIXME: look at the timestamps on the monkeysphere-generated
736 # authorized_keys files -- warn if they seem out-of-date.
738 # FIXME: check for a cronjob that updates monkeysphere-generated
742 echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
743 # Ensure that User ID authentication is enabled:
744 if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
745 echo "! $sshd_config does not point to monkeysphere authorized keys."
746 echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
747 problemsfound=$(($problemsfound+1))
749 if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
750 echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
751 echo "$badauthorizedkeys"
752 echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
753 problemsfound=$(($problemsfound+1))
756 if [ "$problemsfound" -gt 0 ]; then
757 echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
758 echo " monkeysphere-server diagnostics"
760 echo "Everything seems to be in order!"
764 # retrieve key from web of trust, import it into the host keyring, and
765 # ltsign the key in the host keyring so that it may certify other keys
775 # set default values for trust depth and domain
781 TEMP=$(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?"
783 if [ $? != 0 ] ; then
787 # Note the quotes around `$TEMP': they are essential!
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 '$PGRM help' for usage."
1003 'update-users'|'update-user'|'u')
1017 'add-hostname'|'add-name'|'n+')
1022 'revoke-hostname'|'revoke-name'|'n-')
1024 revoke_hostname "$@"
1027 'show-key'|'show'|'s')
1032 'publish-key'|'publish'|'p')
1041 'add-identity-certifier'|'add-id-certifier'|'add-certifier'|'c+')
1046 'remove-identity-certifier'|'remove-id-certifier'|'remove-certifier'|'c-')
1048 remove_certifier "$@"
1051 'list-identity-certifiers'|'list-id-certifiers'|'list-certifiers'|'list-certifier'|'c')
1053 list_certifiers "$@"
1056 'gpg-authentication-cmd')
1057 gpg_authentication_cmd "$@"
1060 '--help'|'help'|'-h'|'h'|'?')
1065 failure "Unknown command: '$COMMAND'
1066 Type '$PGRM help' for usage."