#!/bin/bash
# GnuPG Editor
# Written by Dr Small <drsmall@mycroftserver.homelinux.org>
# Spring 2008
#
# Usage: ged
# Usage: ged /path/to/file.gpg

# DEPENDENCIES:
# 		gnupg
#		dialog
#		mktemp	


# Hello there, I write this to better help the end user
# who undoubtedly must be a GPG user since you found 
# this script. I wrote it to save myself the trouble
# of editing encrypted files (encrypted with my public
# key) and to be secure.
# It was origininally designed to be a command line
# password manager, but it turned out too good to
# simply be used as that.
# You should find the script well commented, so please
# feel free to look over the code and edit it to your
# likings. Most of all, have fun, and stay secure!
# 	Dr Small




# This if statement here is basically
# the installer. It takes the input 
# from the user and makes a .gedrc file
# with the options that the user specified.

if [ -f ~/.gedrc ]; then
    . ~/.gedrc

else

echo ""
echo "GnuPG Editor config file does not exist..."
echo "Attempting to create."
echo ""
echo -n "Please enter your GPG Key: "
read keyid
echo ""
echo -n "Please enter your favorite editor: (vim) "
read editor

echo -e '#This Variable must set when used\n#for encrypting the data.\ngpgkey="'$keyid'"\n\n#This is the path that will show\n# in the input box for $file.\ndefaultpath="'$HOME'"\n\n#Set your editor here.\nvisual="'$editor'"' > $HOME/.gedrc
echo -n "Press ENTER to continue..."
read enter

$0
exit 0

fi


# # # # # # # # # # # # # # # # # # # # # # #
# Command line option:                      #
# This Option allows you to input the file  #
# address in the command line, and only be  #
# prompted for the password.                #
#                                           #
# Usage: ged /path/to/file.gpg              #
# # # # # # # # # # # # # # # # # # # # # # #
if [[ $1 ]]; then

	if [[ -a $1 ]]; then

#Prompt for the password.
password=$( dialog --stdout --backtitle "GPG Editor" --title "GPG Password" --clear  --insecure --passwordbox \ "Enter your GPG password to decrypt the file." 10 51 )

return_value=$?
case $return_value in

1)

#Clean up and abort.
reset
exit;;

0)


#Let's create a Temporary directory
# and file.
temp=$(mktemp -d /tmp/ged.XXXXXXXX)
tempfile=$temp/output


#Run the dialogs, decrypt the file and output it to the temp directory.
echo $password | gpg -o $tempfile --decrypt --passphrase-fd 0 "$1"

return_value=$?
case $return_value in

1)

#Incase we want to abort.
exit;;

0)

# Open the file with $visual
$visual $tempfile 2> /dev/null; gpg -e -r "$gpgkey" -o "$1" $tempfile

# Let's clean up the nasty effect
# that dilog leaves on the screen
# when we are finished.
reset

esac
esac

	else
		# We use this statement here, to save alot
		# of time. If the user enters an invalid filename
		# ged will catch it before it takes him to the
		# password prompt... Very useful. :)

		echo ""
		echo "File Does Not Exist!"
		echo ""
		exit 1
	fi

#Cleanup the temporary files.
#This step is essential.
rm -R $temp


else

#############################################
# This begins the default ged prompt        #
# which entails the prompt for the filename #
# Usage: ged				    #
#############################################


#This is the dialog to prompt
#us for the file's path.
file=$(dialog --stdout --backtitle "GPG Editor" --title "Edit File" --inputbox "Enter the path to the file." 10 51 "$defaultpath/")

return_value=$?
case $return_value in

1)

# Cleanup the screen and abort.
reset
exit;;

0)

#Prompt for the password.
password=$( dialog --stdout --backtitle "GPG Editor" --title "GPG Password" --clear  --insecure --passwordbox \ "Enter your GPG password to decrypt the file." 10 51 )

return_value=$?
case $return_value in

1)

# Clean up the screen and abort.
reset
exit;;

0)


#Let's create a Temporary directory
# and file. We need this to store the
# unencrypted file in. Don't worry,
# it will get wiped in the end...
temp=$(mktemp -d /tmp/ged.XXXXXXXX)
tempfile=$temp/output


#Run the dialogs, decrypt the file and output it to the temp directory.
echo $file; echo $password | gpg -o $tempfile --decrypt --passphrase-fd 0 "$file"

return_value=$?
case $return_value in

1)

exit;;

0)

# Open the file with $visual (set in .gedrc)
$visual $tempfile 2> /dev/null; gpg -e -r "$gpgkey" -o "$file" $tempfile

#Clean up the screen when we are done.
reset

esac
esac
esac

#Cleanup the temporary files.
#We wouldn't want to keep those
#unencrypted files in /temp.
rm -R $temp


fi

exit 0