X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=src%2Fcommon;h=44bdb670f515384646bd6d92a5f11ad6e6b5329a;hb=39f3516d7f57397cb61c5a28d3d199ad9bb1a719;hp=cbfa95693c307782081b4c728206186f645601b7;hpb=70674cae8b3d69d0e750125387b26c0d5857c5ba;p=monkeysphere.git

diff --git a/src/common b/src/common
index cbfa956..44bdb67 100644
--- a/src/common
+++ b/src/common
@@ -69,11 +69,101 @@ file_hash() {
     md5sum "$1" 2> /dev/null
 }
 
-# convert escaped characters from gpg output back into original
-# character
-# FIXME: undo all escape character translation in with-colons gpg output
-unescape() {
-    echo "$1" | sed 's/\\x3a/:/'
+# convert escaped characters in pipeline from gpg output back into
+# original character
+# FIXME: undo all escape character translation in with-colons gpg
+# output
+gpg_unescape() {
+    sed 's/\\x3a/:/g'
+}
+
+# convert nasty chars into gpg-friendly form in pipeline
+# FIXME: escape everything, not just colons!
+gpg_escape() {
+    sed 's/:/\\x3a/g'
+}
+
+# prompt for GPG-formatted expiration, and emit result on stdout
+get_gpg_expiration() {
+    local keyExpire=
+
+    cat >&2 <<EOF
+Please specify how long the key should be valid.
+         0 = key does not expire
+      <n>  = key expires in n days
+      <n>w = key expires in n weeks
+      <n>m = key expires in n months
+      <n>y = key expires in n years
+EOF
+    while [ -z "$keyExpire" ] ; do
+	read -p "Key is valid for? (0) " keyExpire
+	if ! test_gpg_expire ${keyExpire:=0} ; then
+	    echo "invalid value" >&2
+	    unset keyExpire
+	fi
+    done
+    echo "$keyExpire"
+}
+
+passphrase_prompt() {
+    local prompt="$1"
+    local fifo="$2"
+    local PASS
+
+    if [ "$DISPLAY" ] && which "${SSH_ASKPASS:-ssh-askpass}" >/dev/null; then
+	"${SSH_ASKPASS:-ssh-askpass}" "$prompt" > "$fifo"
+    else
+	read -s -p "$prompt" PASS
+	# Uses the builtin echo, so should not put the passphrase into
+	# the process table.  I think. --dkg
+	echo "$PASS" > "$fifo"
+    fi
+}
+
+test_gnu_dummy_s2k_extension() {
+
+# this block contains a demonstration private key that has had the
+# primary key stripped out using the GNU S2K extension known as
+# "gnu-dummy" (see /usr/share/doc/gnupg/DETAILS.gz).  The subkey is
+# present in cleartext, however.
+
+# openpgp2ssh will be able to deal with this based on whether the
+# local copy of GnuTLS contains read_s2k support that can handle it.
+
+# read up on that here:
+
+# http://lists.gnu.org/archive/html/gnutls-devel/2008-08/msg00005.html
+
+echo "
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.9 (GNU/Linux)
+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+=CR5w
+-----END PGP PRIVATE KEY BLOCK-----
+" | openpgp2ssh 4129E89D17C1D591 >/dev/null 2>/dev/null
+
 }
 
 # remove all lines with specified string from specified file
@@ -386,29 +476,24 @@ process_user_id() {
 		;;
 	    'uid') # user ids
 		if [ "$lastKey" != pub ] ; then
-		    log " - got a user ID after a sub key!  user IDs should only follow primary keys!"
-		    continue
-		fi
-		# don't bother with a uid if there is no valid or reasonable primary key.
-		if [ "$keyOK" != true ] ; then
+		    log " - got a user ID after a sub key?!  user IDs should only follow primary keys!"
 		    continue
 		fi
 		# if an acceptable user ID was already found, skip
-		if [ "$uidOK" ] ; then
+		if [ "$uidOK" = 'true' ] ; then
 		    continue
 		fi
-		# if the user ID does not match, skip
-		if [ "$(unescape "$uidfpr")" != "$userID" ] ; then
-		    continue
-		fi
-		# if the user ID validity is not ok, skip
-		if [ "$validity" != 'u' -a "$validity" != 'f' ] ; then
+		# if the user ID does matches...
+		if [ "$(echo "$uidfpr" | gpg_unescape)" = "$userID" ] ; then
+		    # and the user ID validity is ok
+		    if [ "$validity" = 'u' -o "$validity" = 'f' ] ; then
+			# mark user ID acceptable
+			uidOK=true
+		    fi
+		else
 		    continue
 		fi
 
-		# mark user ID acceptable
-		uidOK=true
-
 		# output a line for the primary key
 		# 0 = ok, 1 = bad
 		if [ "$keyOK" -a "$uidOK" -a "$lastKeyOK" ] ; then
@@ -484,7 +569,10 @@ process_user_id() {
 		fi
 		;;
 	esac
-    done
+    done | sort -t: -k1 -n -r
+    # NOTE: this last sort is important so that the "good" keys (key
+    # flag '0') come last.  This is so that they take precedence when
+    # being processed in the key files over "bad" keys (key flag '1')
 }
 
 # process a single host in the known_host file
@@ -498,16 +586,15 @@ process_host_known_hosts() {
     local tmpfile
 
     host="$1"
+    userID="ssh://${host}"
 
     log "processing: $host"
 
-    userID="ssh://${host}"
-
     nKeys=0
     nKeysOK=0
 
     IFS=$'\n'
-    for line in $(process_user_id "ssh://${host}") ; do
+    for line in $(process_user_id "${userID}") ; do
 	# note that key was found
 	nKeys=$((nKeys+1))