HA! I figured out how to get ssh-keygen to read stdin by using the

bash "Here Strings" redirection.  No more stupid tempfiles to get ssh
key fingerprints.

2 files changed, 10 insertions, 11 deletions

diff --git a/src/monkeysphere-server b/src/monkeysphere-server
index 34b06b7..a1844ee 100755
--- a/src/monkeysphere-server
+++ b/src/monkeysphere-server
@@ -132,13 +132,13 @@ show_server_key() {
     fingerprint=$(fingerprint_server_key)
     gpg_authentication "--fingerprint --list-key --list-options show-unusable-uids $fingerprint"
 
-    # dumping to a file named ' ' so that the ssh-keygen output
-    # doesn't claim any potentially bogus hostname(s):
-    tmpkey=$(mktemp ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX) || failure "Could not create temporary directory!"
-    gpg_authentication "--export $fingerprint" | openpgp2ssh "$fingerprint" 2>/dev/null > "$tmpkey"
+    # do some crazy "Here Strings" redirection to get the key to
+    # ssh-keygen, since it doesn't read from stdin cleanly
     echo -n "ssh fingerprint: "
-    ssh-keygen -l -f "$tmpkey" | awk '{ print $1, $2, $4 }'
-    rm -rf "$tmpkey"
+    ssh-keygen -l -f /dev/stdin \
+	<<<$(gpg_authentication "--export $fingerprint" | \
+	openpgp2ssh "$fingerprint" 2>/dev/null) | \
+	awk '{ print $1, $2, $4 }'
     echo -n "OpenPGP fingerprint: "
     echo "$fingerprint"
 }
diff --git a/src/monkeysphere-ssh-proxycommand b/src/monkeysphere-ssh-proxycommand
index b3dc562..a609199 100755
--- a/src/monkeysphere-ssh-proxycommand
+++ b/src/monkeysphere-ssh-proxycommand
@@ -77,12 +77,11 @@ output_no_valid_key() {
 		    log "An OpenPGP key matching the ssh key offered by the host was found:"
 		    log
 
-		    # get the fingerprint of the ssh key
-		    tmpkey=$(mktemp ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX)
-		    echo "$sshKeyGPG" > "$tmpkey"
-		    sshFingerprint=$(ssh-keygen -l -f "$tmpkey" | \
+		    # do some crazy "Here Strings" redirection to get the key to
+		    # ssh-keygen, since it doesn't read from stdin cleanly
+		    sshFingerprint=$(ssh-keygen -l -f /dev/stdin \
+			<<<$(echo "$sshKeyGPG") | \
 			awk '{ print $2 }')
-		    rm -rf "$tmpkey"
 
 		    # get the sigs for the matching key
 		    gpgSigOut=$(gpg --check-sigs \