From 231d232006958029a636ee5d04f991b868989b54 Mon Sep 17 00:00:00 2001
From: Jerome Petazzoni <jerome.petazzoni@gmail.com>
Date: Wed, 30 Sep 2015 14:55:36 -0700
Subject: [PATCH] buttslock will lock your screen when your machine goes to
sleep
---
buttslock/Dockerfile | 15 +++++++++++++++
buttslock/buttslock.py | 28 ++++++++++++++++++++++++++++
buttslock/buttslock.sh | 26 ++++++++++++++++++++++++++
buttslock/lock.png | Bin 0 -> 1387 bytes
4 files changed, 69 insertions(+)
create mode 100644 buttslock/Dockerfile
create mode 100755 buttslock/buttslock.py
create mode 100755 buttslock/buttslock.sh
create mode 100644 buttslock/lock.png
diff --git a/buttslock/Dockerfile b/buttslock/Dockerfile
new file mode 100644
index 0000000..ee14255
--- /dev/null
+++ b/buttslock/Dockerfile
@@ -0,0 +1,15 @@
+#
+# This container will listen to DBus events to be notified when your
+# computer goes to sleep. When such events happen, it will lock the
+# screen with a fancy lock.
+#
+# It needs to be started with a few bind-mounts:
+# - /etc/passwd, /etc/shadow (read-only)
+# - /var/run/dbus, the X11 socket (typically /tmp/.X11-unix)
+# And it also requires the USER and DISPLAY environment variables to be set.
+#
+FROM alpine
+RUN apk update
+RUN apk add i3lock imagemagick py-dbus py-gobject scrot ttf-liberation xkeyboard-config
+ADD buttslock.py buttslock.sh lock.png /
+CMD /buttslock.py
diff --git a/buttslock/buttslock.py b/buttslock/buttslock.py
new file mode 100755
index 0000000..126ed4c
--- /dev/null
+++ b/buttslock/buttslock.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+
+# Shamelessly pasted from:
+# http://serverfault.com/questions/573379/system-suspend-dbus-upower-signals-are-not-seen
+
+from datetime import datetime
+import dbus
+import gobject
+from dbus.mainloop.glib import DBusGMainLoop
+import os
+
+def handle_sleep(*args):
+ print "%s PrepareForSleep%s" % (datetime.now().ctime(), args)
+ if len(args)>0 and args[0]:
+ os.system("/buttslock.sh")
+
+DBusGMainLoop(set_as_default=True) # integrate into gobject main loop
+bus = dbus.SystemBus() # connect to system wide dbus
+bus.add_signal_receiver( # define the signal to listen to
+ handle_sleep, # callback function
+ 'PrepareForSleep', # signal name
+ 'org.freedesktop.login1.Manager', # interface
+ 'org.freedesktop.login1' # bus name
+)
+
+loop = gobject.MainLoop()
+loop.run()
+
diff --git a/buttslock/buttslock.sh b/buttslock/buttslock.sh
new file mode 100755
index 0000000..7c780e9
--- /dev/null
+++ b/buttslock/buttslock.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+# Shamelessly copied from:
+# https://github.com/meskarune/i3lock-fancy
+
+# All options are here: http://www.imagemagick.org/Usage/blur/#blur_args
+#BLURTYPE="0x5" # 7.52s
+#BLURTYPE="0x2" # 4.39s
+#BLURTYPE="5x3" # 3.80s
+BLURTYPE="2x8" # 2.90s
+#BLURTYPE="2x3" # 2.92s
+
+# I still have to figure out how to get imagemagick fonts to work in Alpine
+#FONT="-font Liberation-Sans"
+FONT=
+
+scrot /tmp/scrot.png
+convert /tmp/scrot.png \
+ -level 0%,100%,0.6 -blur $BLURTYPE $FONT \
+ -pointsize 26 -fill white -gravity center \
+ -annotate +0+200 'Type password to unlock' \
+ /tmp/conv.png
+composite -gravity center /lock.png /tmp/conv.png /tmp/lock.png
+#i3lock --textcolor=ffffff00 --insidecolor=ffffff1c --ringcolor=ffffff3e --linecolor=ffffff00 --keyhlcolor=00000080 --ringvercolor=00000000 --insidevercolor=0000001c --ringwrongcolor=00000055 --insidewrongcolor=0000001c -i $IMAGE
+i3lock -i /tmp/lock.png --ignore-empty-password
+
diff --git a/buttslock/lock.png b/buttslock/lock.png
new file mode 100644
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