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-rw-r--r--src/share/ma/add_certifier146
-rw-r--r--src/share/ma/diagnostics185
-rw-r--r--src/share/ma/list_certifiers30
-rw-r--r--src/share/ma/remove_certifier49
-rw-r--r--src/share/ma/update_users157
5 files changed, 567 insertions, 0 deletions
diff --git a/src/share/ma/add_certifier b/src/share/ma/add_certifier
new file mode 100644
index 0000000..0c3c647
--- /dev/null
+++ b/src/share/ma/add_certifier
@@ -0,0 +1,146 @@
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication add-certifier subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# retrieve key from web of trust, import it into the host keyring, and
+# ltsign the key in the host keyring so that it may certify other keys
+
+add_certifier() {
+
+local domain
+local trust
+local depth
+local keyID
+local fingerprint
+local ltsignCommand
+local trustval
+
+# set default values for trust depth and domain
+domain=
+trust=full
+depth=1
+
+# get options
+while true ; do
+ case "$1" in
+ -n|--domain)
+ domain="$2"
+ shift 2
+ ;;
+ -t|--trust)
+ trust="$2"
+ shift 2
+ ;;
+ -d|--depth)
+ depth="$2"
+ shift 2
+ ;;
+ *)
+ if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
+ failure "Unknown option '$1'.
+Type '$PGRM help' for usage."
+ fi
+ break
+ ;;
+ esac
+done
+
+keyID="$1"
+if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to add, or specify a file to read the key from."
+fi
+if [ -f "$keyID" ] ; then
+ echo "Reading key from file '$keyID':"
+ importinfo=$(gpg_sphere "--import" < "$keyID" 2>&1) || failure "could not read key from '$keyID'"
+ # FIXME: if this is tried when the key database is not
+ # up-to-date, i got these errors (using set -x):
+
+ # ++ su -m monkeysphere -c '\''gpg --import'\''
+ # Warning: using insecure memory!
+ # gpg: key D21739E9: public key "Daniel Kahn Gillmor <dkg@fifthhorseman.net>" imported
+ # gpg: Total number processed: 1
+ # gpg: imported: 1 (RSA: 1)
+ # gpg: can'\''t create `/var/monkeysphere/gnupg-host/pubring.gpg.tmp'\'': Permission denied
+ # gpg: failed to rebuild keyring cache: Permission denied
+ # gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
+ # gpg: depth: 0 valid: 1 signed: 0 trust: 0-, 0q, 0n, 0m, 0f, 1u
+ # gpg: next trustdb check due at 2009-01-10'
+ # + failure 'could not read key from '\''/root/dkg.gpg'\'''
+ # + echo 'could not read key from '\''/root/dkg.gpg'\'''
+
+ keyID=$(echo "$importinfo" | grep '^gpg: key ' | cut -f2 -d: | cut -f3 -d\ )
+ if [ -z "$keyID" ] || [ $(echo "$keyID" | wc -l) -ne 1 ] ; then
+ failure "Expected there to be a single gpg key in the file."
+ fi
+else
+ # get the key from the key server
+ gpg_sphere "--keyserver $KEYSERVER --recv-key '0x${keyID}!'" || failure "Could not receive a key with this ID from the '$KEYSERVER' keyserver."
+fi
+
+export keyID
+
+# get the full fingerprint of a key ID
+fingerprint=$(gpg_sphere "--list-key --with-colons --with-fingerprint 0x${keyID}!" | \
+ grep '^fpr:' | grep "$keyID" | cut -d: -f10)
+
+if [ -z "$fingerprint" ] ; then
+ failure "Key '$keyID' not found."
+fi
+
+echo
+echo "key found:"
+gpg_sphere "--fingerprint 0x${fingerprint}!"
+
+echo "Are you sure you want to add the above key as a"
+read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
+if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "Identity certifier not added."
+fi
+
+# export the key to the host keyring
+gpg_sphere "--export 0x${fingerprint}!" | gpg_core --import
+
+if [ "$trust" = marginal ]; then
+ trustval=1
+elif [ "$trust" = full ]; then
+ trustval=2
+else
+ failure "Trust value requested ('$trust') was unclear (only 'marginal' or 'full' are supported)."
+fi
+
+# ltsign command
+# NOTE: *all* user IDs will be ltsigned
+ltsignCommand=$(cat <<EOF
+ltsign
+y
+$trustval
+$depth
+$domain
+y
+save
+EOF
+ )
+
+# ltsign the key
+if echo "$ltsignCommand" | \
+ gpg_core --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
+
+ # update the trustdb for the authentication keyring
+ gpg_sphere "--check-trustdb"
+
+ echo
+ echo "Identity certifier added."
+else
+ failure "Problem adding identify certifier."
+fi
+
+}
diff --git a/src/share/ma/diagnostics b/src/share/ma/diagnostics
new file mode 100644
index 0000000..73e93a0
--- /dev/null
+++ b/src/share/ma/diagnostics
@@ -0,0 +1,185 @@
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication diagnostics subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# check on the status and validity of the key and public certificates
+
+diagnostics() {
+
+local seckey
+local keysfound
+local curdate
+local warnwindow
+local warndate
+local create
+local expire
+local uid
+local fingerprint
+local badhostkeys
+local sshd_config
+local problemsfound=0
+
+# FIXME: what's the correct, cross-platform answer?
+sshd_config=/etc/ssh/sshd_config
+seckey=$(gpg_host --list-secret-keys --fingerprint --with-colons --fixed-list-mode)
+keysfound=$(echo "$seckey" | grep -c ^sec:)
+curdate=$(date +%s)
+# warn when anything is 2 months away from expiration
+warnwindow='2 months'
+warndate=$(advance_date $warnwindow +%s)
+
+if ! id monkeysphere >/dev/null ; then
+ echo "! No monkeysphere user found! Please create a monkeysphere system user with bash as its shell."
+ problemsfound=$(($problemsfound+1))
+fi
+
+if ! [ -d "$SYSDATADIR" ] ; then
+ echo "! no $SYSDATADIR directory found. Please create it."
+ problemsfound=$(($problemsfound+1))
+fi
+
+echo "Checking host GPG key..."
+if (( "$keysfound" < 1 )); then
+ echo "! No host key found."
+ echo " - Recommendation: run 'monkeysphere-server gen-key'"
+ problemsfound=$(($problemsfound+1))
+elif (( "$keysfound" > 1 )); then
+ echo "! More than one host key found?"
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+else
+ create=$(echo "$seckey" | grep ^sec: | cut -f6 -d:)
+ expire=$(echo "$seckey" | grep ^sec: | cut -f7 -d:)
+ fingerprint=$(echo "$seckey" | grep ^fpr: | head -n1 | cut -f10 -d:)
+ # check for key expiration:
+ if [ "$expire" ]; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! Host key is expired."
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! Host key expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ echo " - Recommendation: extend lifetime of key with 'monkeysphere-server extend-key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+
+ # and weirdnesses:
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! Host key was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # check for UserID expiration:
+ echo "$seckey" | grep ^uid: | cut -d: -f6,7,10 | \
+ while IFS=: read create expire uid ; do
+ # FIXME: should we be doing any checking on the form
+ # of the User ID? Should we be unmangling it somehow?
+
+ if [ "$create" ] && (( "$create" > "$curdate" )); then
+ echo "! User ID '$uid' was created in the future(?!). Is your clock correct?"
+ echo " - Recommendation: Check clock ($(date +%F_%T)); use NTP?"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if [ "$expire" ] ; then
+ if (( "$expire" < "$curdate" )); then
+ echo "! User ID '$uid' is expired."
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ elif (( "$expire" < "$warndate" )); then
+ echo "! User ID '$uid' expires in less than $warnwindow:" $(advance_date $(( $expire - $curdate )) seconds +%F)
+ # FIXME: recommend a way to resolve this
+ problemsfound=$(($problemsfound+1))
+ fi
+ fi
+ done
+
+# FIXME: verify that the host key is properly published to the
+# keyservers (do this with the non-privileged user)
+
+# FIXME: check that there are valid, non-expired certifying signatures
+# attached to the host key after fetching from the public keyserver
+# (do this with the non-privileged user as well)
+
+# FIXME: propose adding a revoker to the host key if none exist (do we
+# have a way to do that after key generation?)
+
+ # Ensure that the ssh_host_rsa_key file is present and non-empty:
+ echo
+ echo "Checking host SSH key..."
+ if [ ! -s "${SYSDATADIR}/ssh_host_rsa_key" ] ; then
+ echo "! The host key as prepared for SSH (${SYSDATADIR}/ssh_host_rsa_key) is missing or empty."
+ problemsfound=$(($problemsfound+1))
+ else
+ if [ $(ls -l "${SYSDATADIR}/ssh_host_rsa_key" | cut -f1 -d\ ) != '-rw-------' ] ; then
+ echo "! Permissions seem wrong for ${SYSDATADIR}/ssh_host_rsa_key -- should be 0600."
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # propose changes needed for sshd_config (if any)
+ if ! grep -q "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$" "$sshd_config"; then
+ echo "! $sshd_config does not point to the monkeysphere host key (${SYSDATADIR}/ssh_host_rsa_key)."
+ echo " - Recommendation: add a line to $sshd_config: 'HostKey ${SYSDATADIR}/ssh_host_rsa_key'"
+ problemsfound=$(($problemsfound+1))
+ fi
+ if badhostkeys=$(grep -i '^HostKey' "$sshd_config" | grep -v "^HostKey[[:space:]]\+${SYSDATADIR}/ssh_host_rsa_key$") ; then
+ echo "! $sshd_config refers to some non-monkeysphere host keys:"
+ echo "$badhostkeys"
+ echo " - Recommendation: remove the above HostKey lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+ fi
+
+ # FIXME: test (with ssh-keyscan?) that the running ssh
+ # daemon is actually offering the monkeysphere host key.
+
+ fi
+fi
+
+# FIXME: look at the ownership/privileges of the various keyrings,
+# directories housing them, etc (what should those values be? can
+# we make them as minimal as possible?)
+
+# FIXME: look to see that the ownertrust rules are set properly on the
+# authentication keyring
+
+# FIXME: make sure that at least one identity certifier exists
+
+# FIXME: look at the timestamps on the monkeysphere-generated
+# authorized_keys files -- warn if they seem out-of-date.
+
+# FIXME: check for a cronjob that updates monkeysphere-generated
+# authorized_keys?
+
+echo
+echo "Checking for MonkeySphere-enabled public-key authentication for users ..."
+# Ensure that User ID authentication is enabled:
+if ! grep -q "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$" "$sshd_config"; then
+ echo "! $sshd_config does not point to monkeysphere authorized keys."
+ echo " - Recommendation: add a line to $sshd_config: 'AuthorizedKeysFile ${SYSDATADIR}/authorized_keys/%u'"
+ problemsfound=$(($problemsfound+1))
+fi
+if badauthorizedkeys=$(grep -i '^AuthorizedKeysFile' "$sshd_config" | grep -v "^AuthorizedKeysFile[[:space:]]\+${SYSDATADIR}/authorized_keys/%u$") ; then
+ echo "! $sshd_config refers to non-monkeysphere authorized_keys files:"
+ echo "$badauthorizedkeys"
+ echo " - Recommendation: remove the above AuthorizedKeysFile lines from $sshd_config"
+ problemsfound=$(($problemsfound+1))
+fi
+
+if [ "$problemsfound" -gt 0 ]; then
+ echo "When the above $problemsfound issue"$(if [ "$problemsfound" -eq 1 ] ; then echo " is" ; else echo "s are" ; fi)" resolved, please re-run:"
+ echo " monkeysphere-server diagnostics"
+else
+ echo "Everything seems to be in order!"
+fi
+
+}
diff --git a/src/share/ma/list_certifiers b/src/share/ma/list_certifiers
new file mode 100644
index 0000000..e37485e
--- /dev/null
+++ b/src/share/ma/list_certifiers
@@ -0,0 +1,30 @@
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication list-certifiers subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@fifthhorseman.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# list the host certifiers
+
+list_certifiers() {
+
+local keys
+local key
+
+# find trusted keys in authentication keychain
+keys=$(gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-keys --with-colons --fingerprint" | \
+ grep ^pub: | cut -d: -f2,5 | egrep '^(u|f):' | cut -d: -f2)
+
+# output keys
+for key in $keys ; do
+ gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key --fingerprint $key"
+done
+
+}
diff --git a/src/share/ma/remove_certifier b/src/share/ma/remove_certifier
new file mode 100644
index 0000000..560281d
--- /dev/null
+++ b/src/share/ma/remove_certifier
@@ -0,0 +1,49 @@
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication remove-certifier subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+# delete a certifiers key from the host keyring
+
+remove_certifier() {
+
+local keyID
+local fingerprint
+
+keyID="$1"
+if [ -z "$keyID" ] ; then
+ failure "You must specify the key ID of a key to remove."
+fi
+
+if gpg_sphere "--no-options --list-options show-uid-validity --keyring ${GNUPGHOME_AUTHENTICATION}/pubring.gpg --list-key 0x${keyID}!" ; then
+ read -p "Really remove above listed identity certifier? (y/N) " OK; OK=${OK:-N}
+ if [ "${OK/y/Y}" != 'Y' ] ; then
+ failure "Identity certifier not removed."
+ fi
+else
+ failure
+fi
+
+# delete the requested key
+if gpg_sphere "--delete-key --batch --yes 0x${keyID}!" ; then
+ # delete key from host keyring as well
+ gpg_core --delete-key --batch --yes "0x${keyID}!"
+
+ # update the trustdb for the authentication keyring
+ gpg_sphere "--check-trustdb"
+
+ echo
+ echo "Identity certifier removed."
+else
+ failure "Problem removing identity certifier."
+fi
+
+}
diff --git a/src/share/ma/update_users b/src/share/ma/update_users
new file mode 100644
index 0000000..73685f6
--- /dev/null
+++ b/src/share/ma/update_users
@@ -0,0 +1,157 @@
+# -*-shell-script-*-
+# This should be sourced by bash (though we welcome changes to make it POSIX sh compliant)
+
+# Monkeysphere authentication update-users subcommand
+#
+# The monkeysphere scripts are written by:
+# Jameson Rollins <jrollins@finestructure.net>
+# Jamie McClelland <jm@mayfirst.org>
+# Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+#
+# They are Copyright 2008-2009, and are all released under the GPL,
+# version 3 or later.
+
+update_users() {
+
+local unames
+local uname
+local authorizedKeysDir
+local authorizedUserIDs
+
+if [ "$1" ] ; then
+ # get users from command line
+ unames="$@"
+else
+ # or just look at all users if none specified
+ unames=$(getent passwd | cut -d: -f1)
+fi
+
+RETURN=0
+
+# set mode
+MODE="authorized_keys"
+
+# set gnupg home
+GNUPGHOME="$GNUPGHOME_SPHERE"
+
+# the authorized_keys directory
+authorizedKeysDir="${SYSDATADIR}/authentication/authorized_keys"
+
+# check to see if the gpg trust database has been initialized
+if [ ! -s "${GNUPGHOME}/trustdb.gpg" ] ; then
+ failure "GNUPG trust database uninitialized. Please see MONKEYSPHERE-SERVER(8)."
+fi
+
+# make sure the authorized_keys directory exists
+mkdir -p "${authorizedKeysDir}"
+
+# loop over users
+for uname in $unames ; do
+ # check all specified users exist
+ if ! id "$uname" >/dev/null ; then
+ log error "----- unknown user '$uname' -----"
+ continue
+ fi
+
+ log verbose "----- user: $uname -----"
+
+ # make temporary directory
+ TMPLOC=$(mktemp -d ${MATMPDIR}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
+
+ # trap to delete temporary directory on exit
+ trap "rm -rf $TMPLOC" EXIT
+
+ # create temporary authorized_user_ids file
+ TMP_AUTHORIZED_USER_IDS="${TMPLOC}/authorized_user_ids"
+ touch "$TMP_AUTHORIZED_USER_IDS"
+
+ # create temporary authorized_keys file
+ AUTHORIZED_KEYS="${TMPLOC}/authorized_keys"
+ touch "$AUTHORIZED_KEYS"
+
+ # set restrictive permissions on the temporary files
+ # FIXME: is there a better way to do this?
+ chmod 0700 "$TMPLOC"
+ chmod 0600 "$AUTHORIZED_KEYS"
+ chmod 0600 "$TMP_AUTHORIZED_USER_IDS"
+ chown -R "$MONKEYSPHERE_USER" "$TMPLOC"
+
+ # process authorized_user_ids file
+ log debug "checking for authorized_user_ids..."
+ # translating ssh-style path variables
+ authorizedUserIDs=$(translate_ssh_variables "$uname" "$AUTHORIZED_USER_IDS")
+ if [ -s "$authorizedUserIDs" ] ; then
+ # check permissions on the authorized_user_ids file path
+ if check_key_file_permissions "$uname" "$authorizedUserIDs" ; then
+ # copy user authorized_user_ids file to temporary
+ # location
+ cat "$authorizedUserIDs" > "$TMP_AUTHORIZED_USER_IDS"
+
+ # export needed variables
+ export AUTHORIZED_KEYS
+ export TMP_AUTHORIZED_USER_IDS
+
+ # process authorized_user_ids file, as monkeysphere user
+ su_monkeysphere_user \
+ ". ${SYSSHAREDIR}/common; process_authorized_user_ids $TMP_AUTHORIZED_USER_IDS"
+ RETURN="$?"
+ else
+ log debug "not processing authorized_user_ids."
+ fi
+ else
+ log debug "empty or absent authorized_user_ids file."
+ fi
+
+ # add user-controlled authorized_keys file if specified translate
+ # ssh-style path variables
+ rawAuthorizedKeys=$(translate_ssh_variables "$uname" "$RAW_AUTHORIZED_KEYS")
+ if [ "$rawAuthorizedKeys" != 'none' ] ; then
+ log debug "checking for raw authorized_keys..."
+ if [ -s "$rawAuthorizedKeys" ] ; then
+ # check permissions on the authorized_keys file path
+ if check_key_file_permissions "$uname" "$rawAuthorizedKeys" ; then
+ log verbose "adding raw authorized_keys file... "
+ cat "$rawAuthorizedKeys" >> "$AUTHORIZED_KEYS"
+ else
+ log debug "not adding raw authorized_keys file."
+ fi
+ else
+ log debug "empty or absent authorized_keys file."
+ fi
+ fi
+
+ # move the new authorized_keys file into place
+ if [ -s "$AUTHORIZED_KEYS" ] ; then
+ # openssh appears to check the contents of the authorized_keys
+ # file as the user in question, so the file must be readable
+ # by that user at least.
+
+ # but in general, we don't want the user tampering with this
+ # file directly, so we'll adopt this approach: Own the file by
+ # the monkeysphere-server invoker (usually root, but should be
+ # the same uid that sshd is launched as); change the group of
+ # the file so that members of the user's group can read it.
+
+ # FIXME: is there a better way to do this?
+ chown $(whoami) "$AUTHORIZED_KEYS" && \
+ chgrp $(id -g "$uname") "$AUTHORIZED_KEYS" && \
+ chmod g+r "$AUTHORIZED_KEYS" && \
+ mv -f "$AUTHORIZED_KEYS" "${authorizedKeysDir}/${uname}" || \
+ {
+ log error "Failed to install authorized_keys for '$uname'!"
+ rm -f "${authorizedKeysDir}/${uname}"
+ # indicate that there has been a failure:
+ RETURN=1
+ }
+ else
+ rm -f "${authorizedKeysDir}/${uname}"
+ fi
+
+ # unset the trap
+ trap - EXIT
+
+ # destroy temporary directory
+ rm -rf "$TMPLOC"
+done
+
+}
generated by cgit v1.2.3 (git 2.46.0) at 2024-12-25 06:30:16 +0000