From d263f30d4fe03d1976ecd899ba2482cb870c2a4d Mon Sep 17 00:00:00 2001
From: Jameson Graef Rollins <jrollins@phys.columbia.edu>
Date: Sat, 21 Jun 2008 20:32:33 -0400
Subject: Improved gen-key function for server. Update TODO.

---
 src/monkeysphere-server | 57 ++++++++++++++++++++++++++++++++-----------------
 1 file changed, 38 insertions(+), 19 deletions(-)

(limited to 'src/monkeysphere-server')

diff --git a/src/monkeysphere-server b/src/monkeysphere-server
index 693c062..40a6b54 100755
--- a/src/monkeysphere-server
+++ b/src/monkeysphere-server
@@ -46,11 +46,18 @@ gen_key() {
     local hostName
 
     hostName=${1:-$(hostname --fqdn)}
+    service=${SERVICE:-"ssh"}
+    userID="${service}://${hostName}"
+
+    if gpg --list-key ="$userID" > /dev/null 2>&1 ; then
+	failure "Key for '$userID' already exists"
+    fi
 
     # set key defaults
     KEY_TYPE=${KEY_TYPE:-"RSA"}
     KEY_LENGTH=${KEY_LENGTH:-"2048"}
     KEY_USAGE=${KEY_USAGE:-"auth"}
+    KEY_EXPIRE=${KEY_EXPIRE:-"0"}
     cat <<EOF
 Please specify how long the key should be valid.
          0 = key does not expire
@@ -59,25 +66,22 @@ Please specify how long the key should be valid.
       <n>m = key expires in n months
       <n>y = key expires in n years
 EOF
-    read -p "Key is valid for? ($EXPIRE) " EXPIRE; EXPIRE=${EXPIRE:-"0"}
-
-    SERVICE=${SERVICE:-"ssh"}
-    USERID=${USERID:-"$SERVICE"://"$hostName"}
+    read -p "Key is valid for? ($KEY_EXPIRE) " KEY_EXPIRE; KEY_EXPIRE=${KEY_EXPIRE:-"0"}
 
     # set key parameters
     keyParameters=$(cat <<EOF
 Key-Type: $KEY_TYPE
 Key-Length: $KEY_LENGTH
 Key-Usage: $KEY_USAGE
-Name-Real: $USERID
-Expire-Date: $EXPIRE
+Name-Real: $userID
+Expire-Date: $KEY_EXPIRE
 EOF
 )
 
     # add the revoker field if requested
-# FIXME: the 1: below assumes that $REVOKER's key is an RSA key.  why?
-# FIXME: why is this marked "sensitive"?  how will this signature ever
-# be transmitted to the expected revoker?
+    # FIXME: the "1:" below assumes that $REVOKER's key is an RSA key.  why?
+    # FIXME: why is this marked "sensitive"?  how will this signature ever
+    # be transmitted to the expected revoker?
     if [ "$REVOKER" ] ; then
 	keyParameters="${keyParameters}"$(cat <<EOF
 
@@ -89,15 +93,11 @@ EOF
     echo "The following key parameters will be used:"
     echo "$keyParameters"
 
-    read -p "generate key? [Y|n]: " OK; OK=${OK:=Y}
+    read -p "Generate key? [Y|n]: " OK; OK=${OK:=Y}
     if [ ${OK/y/Y} != 'Y' ] ; then
 	failure "aborting."
     fi
 
-    if gpg --list-key ="$USERID" > /dev/null 2>&1 ; then
-	failure "key for '$USERID' already exists"
-    fi
-
     # add commit command
     keyParameters="${keyParameters}"$(cat <<EOF
 
@@ -106,14 +106,33 @@ EOF
 EOF
 )
 
-    log -n "generating server key... "
+    log "generating server key... "
     echo "$keyParameters" | gpg --batch --gen-key
-    loge "done."
-    fingerprint_server_key
+
+    # output the server fingerprint
+    fingerprint_server_key "=${userID}"
+
+    # find the key fingerprint of the server primary key
+    keyID=$(gpg --list-key --with-colons --with-fingerprint "=${userID}" | \
+	grep '^fpr:' | head -1 | cut -d: -f10)
+
+    # write the key to the file
+    # NOTE: assumes that the primary key is the proper key to use
+    (umask 077 && gpgsecret2ssh "$keyID" > "${MS_HOME}/ssh_host_rsa_key")
+    log "Private SSH host key output to file: ${MS_HOME}/ssh_host_rsa_key"
 }
 
+# gpg output key fingerprint
 fingerprint_server_key() {
-    gpg --fingerprint --list-secret-keys =ssh://$(hostname --fqdn)
+    local ID
+
+    if [ -z "$1" ] ; then
+	ID="$1"
+    else
+	ID="=ssh://$(hostname --fqdn)"
+    fi
+
+    gpg --fingerprint --list-secret-keys "$ID"
 }
 
 ########################################################################
@@ -214,7 +233,7 @@ case $COMMAND in
 	;;
 
     'show-fingerprint'|'f')
-	fingerprint_server_key
+	fingerprint_server_key "$@"
 	;;
 
     'publish-key'|'p')
-- 
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