X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=src%2Fmonkeysphere-host;h=bcb570b98df166310938b1f795c445537fc33a95;hb=f728df69bbb04ed21a437832c486590cc5a83684;hp=0b37ba98e7ca3dcc6581bdf72e7a72ae87ed76fa;hpb=5b5a517e61fb5028aea6c2521524ccf2a377d822;p=monkeysphere.git

diff --git a/src/monkeysphere-host b/src/monkeysphere-host
index 0b37ba9..bcb570b 100755
--- a/src/monkeysphere-host
+++ b/src/monkeysphere-host
@@ -12,17 +12,22 @@
 # version 3 or later.
 
 ########################################################################
+set -e
+
 PGRM=$(basename $0)
 
 SYSSHAREDIR=${MONKEYSPHERE_SYSSHAREDIR:-"/usr/share/monkeysphere"}
 export SYSSHAREDIR
 . "${SYSSHAREDIR}/common" || exit 1
 
+SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
+export SYSDATADIR
+
 # sharedir for host functions
 MHSHAREDIR="${SYSSHAREDIR}/mh"
 
-SYSDATADIR=${MONKEYSPHERE_SYSDATADIR:-"/var/lib/monkeysphere"}
-export SYSDATADIR
+# datadir for host functions
+MHDATADIR="${SYSDATADIR}/host"
 
 # UTC date in ISO 8601 format if needed
 DATE=$(date -u '+%FT%T')
@@ -44,12 +49,12 @@ Monkeysphere host admin tool.
 
 subcommands:
  show-key (s)                        output all host key information
- extend-key (e) EXPIRE               extend host key expiration
+ set-expire (e) EXPIRE               set host key expiration
  add-hostname (n+) NAME[:PORT]       add hostname user ID to host key
  revoke-hostname (n-) NAME[:PORT]    revoke hostname user ID
  add-revoker (o) FINGERPRINT         add a revoker to the host key
  revoke-key (r)                      revoke host key
- publish-key (p)                     publish server host key to keyserver
+ publish-key (p)                     publish host key to keyserver
 
  expert <expert-subcommand>          run expert command
  expert help                         expert command help
@@ -75,20 +80,38 @@ su_monkeysphere_user() {
 
 # function to interact with the gpg keyring
 gpg_host() {
-    local returnCode
+    GNUPGHOME="$GNUPGHOME_HOST" gpg "$@"
+}
+
+# command to list the info about the host key, in colon format
+gpg_host_list() {
+    gpg_host --list-keys --with-colons --fixed-list-mode \
+	--with-fingerprint --with-fingerprint \
+	"0x${HOST_FINGERPRINT}!"
+
+}
+
+# command for edit key scripts, takes scripts on stdin
+gpg_host_edit() {
+    gpg_host --quiet --command-fd 0 --edit-key \
+	"0x${HOST_FINGERPRINT}!" "$@"
+}
 
-    GNUPGHOME="$GNUPGHOME_HOST"
-    export GNUPGHOME
+# export the host key to stdout
+gpg_host_export() {
+    gpg_host --export --armor --export-options export-minimal \
+	"0x${HOST_FINGERPRINT}!"
+}
 
-    # NOTE: we supress this warning because we need the monkeysphere
-    # user to be able to read the host pubring.  we realize this might
-    # be problematic, but it's the simplest solution, without too much
-    # loss of security.
-    gpg "$@"
+# export the host key to the monkeysphere host file key
+gpg_host_export_to_ssh_file() {
+    log debug "exporting openpgp public key..."
+    gpg_host_export > "${MHDATADIR}/ssh_host_rsa_key.pub.gpg"
+    log info "SSH host public key in OpenPGP form: ${MHDATADIR}/ssh_host_rsa_key.pub.gpg"
 }
 
 # output just key fingerprint
-fingerprint_server_key() {
+fingerprint_host_key() {
     # set the pipefail option so functions fails if can't read sec key
     set -o pipefail
 
@@ -97,30 +120,59 @@ fingerprint_server_key() {
 	grep '^fpr:' | head -1 | cut -d: -f10 2>/dev/null
 }
 
+# output the index of a user ID on the host key
+# return 1 if user ID not found
+find_host_userid() {
+    local userID="$1"
+    local tmpuidMatch
+    local line
+
+    # match to only ultimately trusted user IDs
+    tmpuidMatch="u:$(echo $userID | gpg_escape)"
+
+    # find the index of the requsted user ID
+    # NOTE: this is based on circumstantial evidence that the order of
+    # this output is the appropriate index
+    line=$(gpg_host_list | egrep '^(uid|uat):' | cut -f2,10 -d: | \
+	grep -n -x -F "$tmpuidMatch" 2>/dev/null)
+
+    if [ "$line" ] ; then
+	echo ${line%%:*}
+	return 0
+    else
+	return 1
+    fi
+}
+
 # function to check for host secret key
-check_host_keyring() {
-    fingerprint_server_key >/dev/null \
-	|| failure "You don't appear to have a Monkeysphere host key on this server.  Please run 'monkeysphere-server gen-key' first."
+check_host_fail() {
+    [ "$HOST_FINGERPRINT" ] || \
+	failure "You don't appear to have a Monkeysphere host key on this server.  Please run 'monkeysphere-host expert import-key' first."
 }
 
 # show info about the host key
 show_key() {
-    local fingerprintPGP
     local fingerprintSSH
 
-    # FIXME: you shouldn't have to be root to see the host key fingerprint
-    check_host_keyring
-    fingerprintPGP=$(fingerprint_server_key)
-    gpg_host "--fingerprint --list-key --list-options show-unusable-uids $fingerprintPGP" 2>/dev/null
-    echo "OpenPGP fingerprint: $fingerprintPGP"
+    # FIXME: should not have to be priviledged user to see this info.
+    # should be taken from publicly accessible key files, instead of
+    # the keyring.
 
-    if [ -f "${SYSDATADIR}/ssh_host_rsa_key.pub" ] ; then
-	fingerprintSSH=$(ssh-keygen -l -f "${SYSDATADIR}/ssh_host_rsa_key.pub" | \
+    gpg_host --fingerprint --list-key --list-options show-unusable-uids \
+	"0x${HOST_FINGERPRINT}!" 2>/dev/null
+
+    echo "OpenPGP fingerprint: $HOST_FINGERPRINT"
+
+    if [ -f "${MHDATADIR}/ssh_host_rsa_key.pub" ] ; then
+	fingerprintSSH=$(ssh-keygen -l -f "${MHDATADIR}/ssh_host_rsa_key.pub" | \
 	    awk '{ print $1, $2, $4 }')
 	echo "ssh fingerprint: $fingerprintSSH"
     else
 	log info "SSH host key not found."
     fi
+
+    # FIXME: show expiration date
+    # FIXME: other relevant key parameters?
 }
 
 ########################################################################
@@ -144,7 +196,10 @@ MONKEYSPHERE_USER=${MONKEYSPHERE_MONKEYSPHERE_USER:=${MONKEYSPHERE_USER:="monkey
 
 # other variables
 CHECK_KEYSERVER=${MONKEYSPHERE_CHECK_KEYSERVER:="true"}
-GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${SYSDATADIR}/host"}
+GNUPGHOME_HOST=${MONKEYSPHERE_GNUPGHOME_HOST:="${MHDATADIR}"}
+
+# host key fingerprint
+HOST_FINGERPRINT=$(fingerprint_host_key)
 
 # export variables needed in su invocation
 export DATE
@@ -154,22 +209,24 @@ export MONKEYSPHERE_USER
 export KEYSERVER
 export GNUPGHOME_HOST
 export GNUPGHOME
+export HOST_FINGERPRINT
 
 # get subcommand
 COMMAND="$1"
 [ "$COMMAND" ] || failure "Type '$PGRM help' for usage."
 shift
 
+
 case $COMMAND in
     'show-key'|'show'|'s')
 	check_host_keyring
 	show_key
 	;;
 
-    'extend-key'|'e')
+    'set-expire'|'extend-key'|'e')
 	check_host_keyring
-	source "${MHSHAREDIR}/extend_key"
-	extend_key "$@"
+	source "${MHSHAREDIR}/set_expire"
+	set_expire "$@"
 	;;
 
     'add-hostname'|'add-name'|'n+')
@@ -202,7 +259,7 @@ case $COMMAND in
 	publish_key
 	;;
 
-    'expert'|'e')
+    'expert')
 	SUBCOMMAND="$1"
 	shift
 	case "$SUBCOMMAND" in
@@ -212,11 +269,8 @@ usage: $PGRM expert <subcommand> [options] [args]
 
 expert subcommands:
  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) [NAME[:PORT]]           generate gpg key for the host
    --length (-l) BITS                  key length in bits (2048)
-   --expire (-e) EXPIRE                date to expire
  diagnostics (d)                     monkeysphere host status
 
 EOF