add libreoffice-gpg

diff --git a/libreoffice-gpg b/libreoffice-gpg
new file mode 100755 (executable)
index 0000000..d074cec
--- /dev/null
+++ b/libreoffice-gpg
@@ -0,0 +1,118 @@
+#!/bin/sh
+#shuber, 2008-10-18
+#
+# This script does a decrypt-edit-encrypt cycle with gpg and OpenOffice.
+# The concrete editing program (ooffice) can be set by the variable
+# $CMD. The detection if the file has been altered is done by a hash sum
+# algorithm which can be set by $SUMCMD.
+#
+# Changelog:
+#    * 2008-10-18   Initial version
+#    * 2008-10-19   Introducing a CRYPTID variable
+#                   Checking if crypted file has same checksum
+#    * 2010-10-23   ooffice only spawns OpenOffice and gives control back
+#                   to shell. Hence, we have to wait for pid now.
+
+
+CMD="libreoffice"
+SUMCMD="sha1sum"
+CRYPTID="user@example.org"
+
+
+#No valid invocation
+if [ $# -ne 1 ]
+then
+       echo "Usage: $CMD-gpg <gpg-file>"
+       exit -1
+fi
+
+
+#The corresponding gpg-file
+gpgfile=$1
+
+if [ ! -f "$gpgfile" ]
+then
+       echo "\`$gpgfile\` does not exist..."
+else
+       echo "Opening \`$gpgfile\`..."
+fi
+
+
+
+#Search for filename to to encrypt file to...
+uncryptfilePost=${gpgfile%%.gpg}
+i=1
+uncryptfile="$i.$uncryptfilePost"
+
+while [ -f "$uncryptfile" ]
+do
+       let "i = $i + 1"
+       uncryptfile="$i.$uncryptfilePost"
+done
+
+
+echo "Uncrypt \`$gpgfile\` to  \`$uncryptfile\`..."
+
+
+
+#Decrypt file and get checksum...
+gpg  --output "$uncryptfile" --decrypt "$gpgfile"
+hsumpre=`$SUMCMD "$uncryptfile" | awk '{ print $1 }'`
+echo "Checksum is '$hsumpre'."
+
+
+#Edit file and get checksum of altered file
+$CMD "$uncryptfile"
+#pid=`lsof | grep "$uncryptfile" | cut -d ' ' -f 2`
+#echo "wait for pid: $pid"
+#while [ -n "`ps | grep "$pid"`" ] ; do
+#        sleep 1
+#done
+
+
+hsumpost=`$SUMCMD "$uncryptfile" | awk '{ print $1 }'`
+echo "Checksum is '$hsumpost'."
+
+
+#Check if file has been altered
+if [ "$hsumpost" != "$hsumpre" ]
+then
+       gpg --output "$gpgfile" -r "$CRYPTID" --encrypt "$uncryptfile" 
+
+       #Get checksum of crypted version
+       hsumcrypt=`gpg --decrypt $gpgfile | $SUMCMD | awk '{ print $1 }'`
+       echo "Checksum of crypted file is '$hsumcrypt'"
+
+       if [ "$hsumpost" != "$hsumcrypt" ]
+       then
+               echo ""
+               echo "*** WARNING ***"
+               echo "*** WARNING ***   Encrypted file \`$gpgfile\` leads to different checksum."
+               echo "*** WARNING ***   Not removing unencrypted file \`$uncryptfile\`."
+               echo "*** WARNING ***"
+               echo ""
+
+               exit -1
+       fi
+
+else
+       echo "No changes. Skip re-encrypting"
+fi
+
+
+
+
+#Remove old file...
+rm -i "$uncryptfile"
+
+
+#File not removed!?
+if [ -f "$uncryptfile" ]
+then
+       echo ""
+       echo "*** WARNING ***"
+       echo "*** WARNING ***   Unencrypted file \`$uncryptfile\` not removed!"
+       echo "*** WARNING ***"
+       echo ""
+fi
+