screen locking

packages.list

@@ -16,6 +16,7 @@
 	[ 'neural'     ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/neural/.package',
 --	[ 'pickup'     ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/pickup/.package',
 	[ 'recipeBook' ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/recipeBook/.package',
+	[ 'secure'     ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/secure/.package',
 	[ 'shellex'    ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/shellex/.package',
 	[ 'swshop'     ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/swshop/.package',
 	[ 'turtle'     ] = 'https://raw.githubusercontent.com/kepler155c/opus-apps/develop-1.8/turtle/.package',

secure/autorun/lock.lua

@@ -11,11 +11,7 @@ local config = Config.load('secure', {
     timeout = 60,
 })
 
-if not config.enabled then
+local timer = config.enabled and os.startTimer(config.timeout)
-    return
-end
-
-local timer = os.startTimer(config.timeout)
 
 local sandboxEnv = Util.shallowCopy(_ENV)
 setmetatable(sandboxEnv, { __index = _G })
@@ -92,7 +88,7 @@ keyboard.addHotkey('control-l', function()
     end
 end)
 
-kernel.hook({ 'mouse_click', 'mouse_up', 'mouse_drag', 'key_up' }, function(event, eventData)
+kernel.hook({ 'mouse_click', 'mouse_up', 'mouse_drag', 'key_up', 'key' }, function()
     if timer then
         os.cancelTimer(timer)
         timer = os.startTimer(config.timeout)
@@ -104,3 +100,16 @@ kernel.hook('timer', function(_, eventData)
         showLockScreen()
     end
 end)
+
+kernel.hook('config_update', function(_, eventData)
+    if eventData[1] == 'secure' then
+        Util.merge(config, eventData[2])
+        if timer then
+            os.cancelTimer(timer)
+            timer = nil
+        end
+        if config.enabled then
+            timer = os.startTimer(config.timeout)
+        end
+    end
+end)

secure/saver.lua

@@ -0,0 +1,128 @@
+--(c) 2013 Felix Maxwell
+--License: CC BY-SA 3.0
+--http://www.computercraft.info/forums2/index.php?/topic/12239-100-screensavers-game-of-life-and-matrix/
+
+-- modified for use in Opus
+
+local fps = 4 --Determines how long the program will wait between each tick
+local char = "\127" --Live cells will look like this
+
+local colors = _G.colors
+local term   = _G.term
+
+local function randomColor()
+	return 2 ^ math.random(0, 14)
+end
+
+local function printCharAt( monitor, x, y, ch )
+	monitor.setCursorPos( x, y )
+	monitor.write( ch )
+end
+
+local function getNumNeighborhood( grid, x, y )
+	local neighbors = 0
+	if x > 1 then
+		if y > 1 then
+			if grid[x-1][y-1] == char then neighbors = neighbors + 1 end
+		end
+		if grid[x-1][y] == char then neighbors = neighbors + 1 end
+		if y < #grid[x] then
+			if grid[x-1][y+1] == char then neighbors = neighbors + 1 end
+		end
+	end
+
+	if y > 1 then
+		if grid[x][y-1] == char then neighbors = neighbors + 1 end
+	end
+	if y < #grid[x] then
+		if grid[x][y+1] == char then neighbors = neighbors + 1 end
+	end
+
+	if x < #grid then
+		if y > 1 then
+			if grid[x+1][y-1] == char then neighbors = neighbors + 1 end
+		end
+		if grid[x+1][y] == char then neighbors = neighbors + 1 end
+		if y < #grid then
+			if grid[x+1][y+1] == char then neighbors = neighbors + 1 end
+		end
+	end
+
+	return neighbors
+end
+local function lifeOrDeath( cur, neighbors )
+	if neighbors < 2 then
+		return " "
+	elseif neighbors > 3 then
+		return " "
+	elseif neighbors == 3 then
+		return char
+	else
+		return cur
+	end
+end
+
+local function tick( monitor, grid )
+	local retGrid = {}
+	for x=1,#grid do
+		retGrid[x] = {}
+		for y=1,#grid[x] do
+			local num = getNumNeighborhood( grid, x, y )
+			retGrid[x][y] = lifeOrDeath( grid[x][y], num )
+			if retGrid[x][y] ~= grid[x][y] then
+				printCharAt( monitor, x, y, retGrid[x][y] )
+			end
+		end
+	end
+	return retGrid
+end
+
+local function setup( w, h )
+	local grid = {}
+	for i=1,w do
+		grid[i] = {}
+		for o=1,h do
+			if math.random(1, 5) == 1 then
+				grid[i][o] = char
+			else
+				grid[i][o] = " "
+			end
+		end
+	end
+	return grid
+end
+
+local function run()
+	local monitor = term.current()
+	if monitor.isColor() then
+		monitor.setTextColor(colors.lime)
+		monitor.setBackgroundColor(colors.black)
+	end
+	local w, h = monitor.getSize()
+	local grid
+
+	local delay = 1/fps
+	local timerId = os.startTimer(delay)
+	local reset = 0
+	while true do
+		local e, id = os.pullEvent()
+		if e == 'key' or e == 'char' or e == 'mouse_click' then
+			break
+		end
+		if e == 'timer' and id == timerId then
+			if reset == 0 then
+				reset = 300
+				monitor.setTextColor(randomColor())
+				grid = setup(w, h)
+				monitor.clear()
+			end
+			reset = reset - 1
+			grid = tick( monitor, grid )
+			timerId = os.startTimer(delay)
+		end
+	end
+end
+
+run()
+term.setCursorPos(1, 1)
+term.clear()

secure/system/secure.lua

@@ -30,10 +30,6 @@ local tab = UI.Tab {
 			enter = 'update',
 		},
 	},
-	label3 = UI.Text {
-		ex = -2, y = -2, width = 20,
-		textColor = colors.yellow,
-	},
 	button = UI.Button {
 		x = 20, y = 6,
 		text = 'Update',
@@ -50,8 +46,7 @@ function tab:eventHandler(event)
 		Config.update('secure', config)
 
 		self:emit({ type = 'success_message', message = 'Settings updated' })
-		self.label3.value = 'Restart is required'
+		os.queueEvent('config_update', 'secure', config)
-		self.label3:draw()
 	end
 	return UI.Tab.eventHandler(self, event)
 end

secure/unlock.lua

@@ -0,0 +1,34 @@
+-- add this file to the preload section of .startup.boot
+-- example:
+-- {
+--   preload = { 'packages/secure/unlock.lua' },
+--   ...
+
+package.path = '/sys/modules/?.lua;' .. package.path
+
+local Security = require('opus.security')
+local SHA      = require('opus.crypto.sha2')
+local Terminal = require('opus.terminal')
+
+local term = _G.term
+
+term.setCursorPos(1, 1)
+term.clear()
+
+repeat
+    local s, m = pcall(function()
+        local password = Terminal.readPassword('Enter password: ')
+
+        if not password then
+            error('Invalid password')
+        end
+
+        if Security.verifyPassword(SHA.compute(password or '')) then
+            return true
+        end
+        error('Invalid password')
+    end)
+    if not s and m then
+        _G.printError(m)
+    end
+until s