X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=src%2Fmonkeysphere-host;h=19ab5fcf8e7c84c72c13cff342b0c30872b524c9;hb=7d4b4815db8ba2f6f984a18a90b50032cf9158ba;hp=bf586169bf5a259199e5b3ddd657e9db6c664e66;hpb=4b05c5750ef56d4573ad251b6193da83a30d9a39;p=monkeysphere.git

diff --git a/src/monkeysphere-host b/src/monkeysphere-host
index bf58616..19ab5fc 100755
--- a/src/monkeysphere-host
+++ b/src/monkeysphere-host
@@ -53,12 +53,10 @@ subcommands:
  publish-key (p)                     publish server host key to keyserver
 
  expert
-  import-key (i)                     import existing ssh key to gpg
-   --hostname (-h) NAME[:PORT]         hostname for key user ID
+  import-key (i)  NAME[:PORT]        import existing ssh key to gpg
    --keyfile (-f) FILE                 key file to import
    --expire (-e) EXPIRE                date to expire
-  gen-key (g)                        generate gpg key for the host
-   --hostname (-h) NAME[:PORT]         hostname for key user ID
+  gen-key (g) NAME[:PORT]            generate gpg key for the host
    --length (-l) BITS                  key length in bits (2048)
    --expire (-e) EXPIRE                date to expire
    --revoker (-r) FINGERPRINT          add a revoker
@@ -121,574 +119,6 @@ check_host_keyring() {
 	|| failure "You don't appear to have a Monkeysphere host key on this server.  Please run 'monkeysphere-server gen-key' first."
 }
 
-# output key information
-show_server_key() {
-    local fingerprintPGP
-    local fingerprintSSH
-    local ret=0
-
-    # FIXME: you shouldn't have to be root to see the host key fingerprint
-    check_host_keyring
-    fingerprintPGP=$(fingerprint_server_key)
-    gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprintPGP" 2>/dev/null
-    if [ $? -ne 0 ] ; then
-	log info "You must be root to see host OpenPGP fingerprint."
-	ret='1'
-    else
-	echo "OpenPGP fingerprint: $fingerprintPGP"
-    fi
-
-    if [ -f "${SYSDATADIR}/ssh_host_rsa_key.pub" ] ; then
-	fingerprintSSH=$(ssh-keygen -l -f "${SYSDATADIR}/ssh_host_rsa_key.pub" | \
-	    awk '{ print $1, $2, $4 }')
-	echo "ssh fingerprint: $fingerprintSSH"
-    else
-	log info "SSH host key not found."
-	ret='1'
-    fi
-
-    return $ret
-}
-
-# import an existing ssh key to a gpg key
-import_key() {
-    local hostName=$(hostname -f)
-    local keyFile="/etc/ssh/ssh_host_rsa_key"
-    local keyExpire
-    local userID
-
-    # check for presense of secret key
-    # FIXME: is this the proper test to be doing here?
-    fingerprint_server_key >/dev/null \
-	&& failure "An OpenPGP host key already exists."
-
-    # get options
-    while true ; do
-	case "$1" in
-	    -h|--hostname)
-		hostName="$2"
-		shift 2
-		;;
-	    -f|--keyfile)
-		keyFile="$2"
-		shift 2
-		;;
-	    -e|--expire)
-		keyExpire="$2"
-		shift 2
-		;;
-	    *)
-		if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
-		    failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
-		fi
-		break
-		;;
-	esac
-    done
-
-    if [ ! -f "$keyFile" ] ; then
-	failure "SSH secret key file '$keyFile' not found."
-    fi
-
-    userID="ssh://${hostName}"
-
-    # prompt about key expiration if not specified
-    keyExpire=$(get_gpg_expiration "$keyExpire")
-
-    echo "The following key parameters will be used for the host private key:"
-    echo "Import: $keyFile"
-    echo "Name-Real: $userID"
-    echo "Expire-Date: $keyExpire"
-
-    read -p "Import key? (Y/n) " OK; OK=${OK:=Y}
-    if [ ${OK/y/Y} != 'Y' ] ; then
-	failure "aborting."
-    fi
-
-    log verbose "importing ssh key..."
-    # translate ssh key to a private key
-    (umask 077 && \
-	pem2openpgp "$userID" "$keyExpire" < "$sshKey" | gpg_host --import)
-
-    # find the key fingerprint of the newly converted key
-    fingerprint=$(fingerprint_server_key)
-
-    # export host ownertrust to authentication keyring
-    log verbose "setting ultimate owner trust for host key..."
-    echo "${fingerprint}:6:" | gpg_host "--import-ownertrust"
-    echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
-
-    # export public key to file
-    gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-    log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-
-    # show info about new key
-    show_server_key
-}
-
-# generate server gpg key
-gen_key() {
-    local keyType="RSA"
-    local keyLength="2048"
-    local keyUsage="auth"
-    local keyExpire
-    local revoker
-    local hostName=$(hostname -f)
-    local userID
-    local keyParameters
-    local fingerprint
-
-    # check for presense of secret key
-    # FIXME: is this the proper test to be doing here?
-    fingerprint_server_key >/dev/null \
-	&& failure "An OpenPGP host key already exists."
-
-    # get options
-    while true ; do
-	case "$1" in
-	    -l|--length)
-		keyLength="$2"
-		shift 2
-		;;
-	    -e|--expire)
-		keyExpire="$2"
-		shift 2
-		;;
-	    -r|--revoker)
-		revoker="$2"
-		shift 2
-		;;
-	    *)
-		if [ "$(echo "$1" | cut -c 1)" = '-' ] ; then
-		    failure "Unknown option '$1'.
-Type '$PGRM help' for usage."
-		fi
-		hostName="$1"
-		break
-		;;
-	esac
-    done
-
-    userID="ssh://${hostName}"
-
-    # prompt about key expiration if not specified
-    keyExpire=$(get_gpg_expiration "$keyExpire")
-
-    # set key parameters
-    keyParameters=\
-"Key-Type: $keyType
-Key-Length: $keyLength
-Key-Usage: $keyUsage
-Name-Real: $userID
-Expire-Date: $keyExpire"
-
-    # add the revoker field if specified
-    # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.
-    # FIXME: key is marked "sensitive"?  is this appropriate?
-    if [ "$revoker" ] ; then
-	keyParameters=\
-"${keyParameters}
-Revoker: 1:${revoker} sensitive"
-    fi
-
-    echo "The following key parameters will be used for the host private key:"
-    echo "$keyParameters"
-
-    read -p "Generate key? (Y/n) " OK; OK=${OK:=Y}
-    if [ ${OK/y/Y} != 'Y' ] ; then
-	failure "aborting."
-    fi
-
-    # add commit command
-    # must include blank line!
-    keyParameters=\
-"${keyParameters}
-
-%commit
-%echo done"
-
-    log verbose "generating host key..."
-    echo "$keyParameters" | gpg_host --batch --gen-key
-
-    # find the key fingerprint of the newly generated key
-    fingerprint=$(fingerprint_server_key)
-
-    # export host ownertrust to authentication keyring
-    log verbose "setting ultimate owner trust for host key..."
-    echo "${fingerprint}:6:" | gpg_authentication "--import-ownertrust"
-
-    # translate the private key to ssh format, and export to a file
-    # for sshs usage.
-    # NOTE: assumes that the primary key is the proper key to use
-    (umask 077 && \
-	gpg_host --export-secret-key "$fingerprint" | \
-	openpgp2ssh "$fingerprint" > "${SYSDATADIR}/ssh_host_rsa_key")
-    log info "SSH host private key output to file: ${SYSDATADIR}/ssh_host_rsa_key"
-    ssh-keygen -y -f "${SYSDATADIR}/ssh_host_rsa_key" > "${SYSDATADIR}/ssh_host_rsa_key.pub"
-    log info "SSH host public key output to file: ${SYSDATADIR}/ssh_host_rsa_key.pub"
-    gpg_authentication "--export-options export-minimal --armor --export 0x${fingerprint}\!" > "${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-    log info "SSH host public key in OpenPGP form: ${SYSDATADIR}/ssh_host_rsa_key.pub.gpg"
-
-    # show info about new key
-    show_server_key
-}
-
-# extend the lifetime of a host key:
-extend_key() {
-    local fpr=$(fingerprint_server_key)
-    local extendTo="$1"
-
-    # get the new expiration date
-    extendTo=$(get_gpg_expiration "$extendTo")
-
-    gpg_host --quiet --command-fd 0 --edit-key "$fpr" <<EOF 
-expire
-$extendTo
-save
-EOF
-
-    echo
-    echo "NOTE: Host key expiration date adjusted, but not yet published."
-    echo "Run '$PGRM publish-key' to publish the new expiration date."
-}
-
-# add hostname user ID to server key
-add_hostname() {
-    local userID
-    local fingerprint
-    local tmpuidMatch
-    local line
-    local adduidCommand
-
-    if [ -z "$1" ] ; then
-	failure "You must specify a hostname to add."
-    fi
-
-    userID="ssh://${1}"
-
-    fingerprint=$(fingerprint_server_key)
-
-    # match to only ultimately trusted user IDs
-    tmpuidMatch="u:$(echo $userID | gpg_escape)"
-
-    # find the index of the requsted user ID
-    # NOTE: this is based on circumstantial evidence that the order of
-    # this output is the appropriate index
-    if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
-	| egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
-	failure "Host userID '$userID' already exists."
-    fi
-
-    echo "The following user ID will be added to the host key:"
-    echo "  $userID"
-    read -p "Are you sure you would like to add this user ID? (y/N) " OK; OK=${OK:=N}
-    if [ ${OK/y/Y} != 'Y' ] ; then
-	failure "User ID not added."
-    fi
-
-    # edit-key script command to add user ID
-    adduidCommand=$(cat <<EOF
-adduid
-$userID
-
-
-save
-EOF
-)
-
-    # execute edit-key script
-    if echo "$adduidCommand" | \
-	gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
-        # update the trustdb for the authentication keyring
-	gpg_authentication "--check-trustdb"
-
-	show_server_key
-
-	echo
-	echo "NOTE: User ID added to key, but key not published."
-	echo "Run '$PGRM publish-key' to publish the new user ID."
-    else
-	failure "Problem adding user ID."
-    fi
-}
-
-# revoke hostname user ID to server key
-revoke_hostname() {
-    local userID
-    local fingerprint
-    local tmpuidMatch
-    local line
-    local uidIndex
-    local message
-    local revuidCommand
-
-    if [ -z "$1" ] ; then
-	failure "You must specify a hostname to revoke."
-    fi
-
-    echo "WARNING: There is a known bug in this function."
-    echo "This function has been known to occasionally revoke the wrong user ID."
-    echo "Please see the following bug report for more information:"
-    echo "http://web.monkeysphere.info/bugs/revoke-hostname-revoking-wrong-userid/"
-    read -p "Are you sure you would like to proceed? (y/N) " OK; OK=${OK:=N}
-    if [ ${OK/y/Y} != 'Y' ] ; then
-	failure "aborting."
-    fi
-
-    userID="ssh://${1}"
-
-    fingerprint=$(fingerprint_server_key)
-
-    # match to only ultimately trusted user IDs
-    tmpuidMatch="u:$(echo $userID | gpg_escape)"
-
-    # find the index of the requsted user ID
-    # NOTE: this is based on circumstantial evidence that the order of
-    # this output is the appropriate index
-    if line=$(gpg_host --list-keys --with-colons --fixed-list-mode "0x${fingerprint}!" \
-	| egrep '^(uid|uat):' | cut -f2,10 -d: | grep -n -x -F "$tmpuidMatch") ; then
-	uidIndex=${line%%:*}
-    else
-	failure "No non-revoked user ID '$userID' is found."
-    fi
-
-    echo "The following host key user ID will be revoked:"
-    echo "  $userID"
-    read -p "Are you sure you would like to revoke this user ID? (y/N) " OK; OK=${OK:=N}
-    if [ ${OK/y/Y} != 'Y' ] ; then
-	failure "User ID not revoked."
-    fi
-
-    message="Hostname removed by monkeysphere-server $DATE"
-
-    # edit-key script command to revoke user ID
-    revuidCommand=$(cat <<EOF
-$uidIndex
-revuid
-y
-4
-$message
-
-y
-save
-EOF
-	)	
-
-    # execute edit-key script
-    if echo "$revuidCommand" | \
-	gpg_host --quiet --command-fd 0 --edit-key "0x${fingerprint}!" ; then
-
-        # update the trustdb for the authentication keyring
-	gpg_authentication "--check-trustdb"
-
-	show_server_key
-
-	echo
-	echo "NOTE: User ID revoked, but revocation not published."
-	echo "Run '$PGRM publish-key' to publish the revocation."
-    else
-	failure "Problem revoking user ID."
-    fi
-}
-
-# add a revoker to the host key
-add_revoker() {
-    # FIXME: implement!
-    failure "not implemented yet!"
-}
-
-# revoke the host key
-revoke_key() {
-    # FIXME: implement!
-    failure "not implemented yet!"
-}
-
-# publish server key to keyserver
-publish_server_key() {
-    read -p "Really publish host key to $KEYSERVER? (y/N) " OK; OK=${OK:=N}
-    if [ ${OK/y/Y} != 'Y' ] ; then
-	failure "key not published."
-    fi
-
-    # find the key fingerprint
-    fingerprint=$(fingerprint_server_key)
-
-    # publish host key
-    gpg_authentication "--keyserver $KEYSERVER --send-keys '0x${fingerprint}!'"
-}
-
-diagnostics() {
-#  * check on the status and validity of the key and public certificates
-    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
-}
-
 ########################################################################
 # MAIN
 ########################################################################