Lexan - GPG Encryption Manager
10-09-2017
Copyright (C) 2017, Josh M
Lexan is a command line GPG encryption manager that is written in Ruby.
It was created to assist in navigating through GPG commands easily in the Linux terminal.
Install Ruby on your computer and run the program with the command:
$ ruby lexan.rb
You need to install the Curses module for Ruby.
This can usually be done with a command such as:
$ gem install curses
or
$ apt-get install curses
You sometimes need to install ncurses:
$ apt install libncurses5-dev
Language or Platform: Ruby
LICENSE
Code:
# Lexan - GPG Encryption Manager
# Copyright (C) 2017, Josh M <mcu@protonmail.com>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
$LOAD_PATH << '.'
require 'curses'
include Curses
require 'gpgopt'
Curses.init_screen
Curses.curs_set(0) # Invisible cursor
Curses.start_color
# Change the colors of your menu here.
Curses.init_pair(1, Curses::COLOR_WHITE, Curses::COLOR_MAGENTA) # RED, MAGENTA, GREEN, BLUE, etc
Curses.init_pair(2, Curses::COLOR_WHITE, Curses::COLOR_GREEN)
Curses.init_pair(3, Curses::COLOR_GREEN, Curses::COLOR_BLACK) # nav words color
Curses.noecho # echo or noecho to display user input
Curses.cbreak # do not buffer commands until Enter is pressed
Curses.raw # disable interpretation of keyboard input
Curses.nonl
Curses.stdscr.nodelay = 1
# Top Header
SCREEN_WIDTH = 72
HEADER_HEIGHT = 1
HEADER_WIDTH = SCREEN_WIDTH
# Left Header
SCREEN_WIDTHLEFT = 47
HEADER_HEIGHTLEFT = 1
HEADER_WIDTHLEFT = SCREEN_WIDTHLEFT
# Right Header
SCREEN_WIDTHRIGHT = 20
HEADER_HEIGHTRIGHT = 1
HEADER_WIDTHRIGHT = SCREEN_WIDTHRIGHT
# MAIN MENU OPTION FUNCTIONS
class GPGoptions
include Option
def Option.fstart # function start
Curses.close_screen
system "clear" or system "cls"
end
def Option.fend # function end
if $?.exitstatus > 0
puts "You do not have GPG installed."
end
puts "\n\nPress Enter to continue."
gets # waits for the user to press enter
end
def Option.fend2 # 2nd function end
if $?.exitstatus > 0
puts "\nThere was an error."
end
puts "Press Enter to continue."
gets # waits for the user to press enter
end
end
begin
# Title Bar
header_window = Curses::Window.new(HEADER_HEIGHT, HEADER_WIDTH, 0, 0) # (height, width, top, left)
header_window.color_set(1)
header_window << "Lexan :: Encryption Manager".center(HEADER_WIDTH)
header_window.refresh
header2_window = Curses::Window.new(HEADER_HEIGHTLEFT, HEADER_WIDTHLEFT, 2, 2)
header2_window.color_set(2)
header2_window << "Main Menu".center(HEADER_WIDTHLEFT)
header2_window.refresh
header3_window = Curses::Window.new(HEADER_HEIGHTRIGHT, HEADER_WIDTHRIGHT, 2, 50)
header3_window.color_set(2)
header3_window << "Navigation".center(HEADER_WIDTHRIGHT)
header3_window.refresh
# right side navigation menu
nav = Window.new(20, 20, 3, 50) # (height, width, top, left)
nav.attrset(Curses.color_pair(3) | Curses::A_BOLD)
# nav.box('|', '-')
nav.setpos(1, 2)
nav.addstr "Select (Enter)"
nav.setpos(2, 2)
nav.addstr "Up (W)"
nav.setpos(3, 2)
nav.addstr "Down (S)"
nav.setpos(4, 2)
nav.addstr "Exit (X)"
nav.refresh
# static text for main window
def make_menu(menu, menu_index=nil)
l = ["Get started with new key.", "List keys.", "Import and export keys.", "Delete keys.", "Fingerprint and sign key.",\
"Trust a key.", "Quick encrypt.", "Encrypt with name.", "Quick decrypt.", "Decrypt with name.", "Terminal decrypt.",\
"Encrypt file for e-mail and web.", "Create or verify signature file.", "Generate a revocation key."]
l.each_with_index do |element, index|
menu.setpos(index + 1, 1)
menu.attrset(index == menu_index ? A_STANDOUT : A_NORMAL) # standout creates highlight
j = "#{index}."
menu.addstr(j.ljust(4) + element) # left justify
end
menu.setpos(5, 1)
end
# refresh text for main menu
def make_info(menu, text)
menu.setpos(16, 30) # sets the position of move up and down
# for example, menu.setpos(1, 10) moves to another
# location
menu.attrset(A_NORMAL)
menu.addstr text
end
# user navigation for main window
position = 0
menu = Window.new(20, 47, 3, 2) # (height, width, top, left)
menu.keypad = true # enable keypad which allows arrow keys
# menu.box('|', '-')
make_menu(menu, position)
while ch = menu.getch
stdscr.keypad = true
case ch
when KEY_UP, 'w'
#make_info menu, 'move up'
position -= 1
when KEY_DOWN, 's'
#make_info menu, 'move down'
position += 1
when 13 # 13 equals enter key
if position.zero?
Option.placezero # function goes here
elsif position == 1
Option.placeone
elsif position == 2
Option.placetwo
elsif position == 3
Option.placethree
elsif position == 4
Option.placefour
elsif position == 5
Option.placefive
elsif position == 6
Option.placesix
elsif position == 7
Option.placeseven
elsif position == 8
Option.placeeight
elsif position == 9
Option.placenine
elsif position == 10
Option.placeten
elsif position == 11
Option.placeeleven
elsif position == 12
Option.placetwelve
elsif position == 13
Option.placethirteen
else
Curses.close_screen
system "clear" or system "cls"
puts "Test 2."
puts "\n\nPress Enter to continue."
gets # waits for the user to press enter
end
when 'x'
exit
end
position = 13 if position < 0
position = 0 if position > 13
make_menu(menu, position)
make_info menu, "Select Option #{position} " # keep space here so that it formats properly
end
rescue => ex
Curses.close_screen
end