#1065 Add windows mode

Add agent mode for windows platform.

Subprocess module for shell/run is cross-platform an no change was
needed. The subprocess will run with the same privilege as its parent,
ogclient.

TODO: Provide a windows installer. As of now,  an administrator
needs to install python and required libraries for this mode to be
usable.

2 files changed, 114 insertions, 0 deletions

diff --git a/src/windows/__init__.py b/src/windows/__init__.py
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/windows/__init__.py
@@ -0,0 +1 @@
+
diff --git a/src/windows/ogOperations.py b/src/windows/ogOperations.py
new file mode 100644
index 0000000..0af7250
--- /dev/null
+++ b/src/windows/ogOperations.py
@@ -0,0 +1,113 @@
+#
+# Copyright (C) 2021 Soleta Networks <info@soleta.eu>
+#
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the
+# Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+import os
+import subprocess
+from subprocess import CalledProcessError
+import multiprocessing as mp
+from multiprocessing import Process
+
+from PIL import Image, ImageDraw
+from pystray import Icon, Menu, MenuItem
+
+from src.ogRest import ThreadState
+
+
+def _create_default_image():
+    """
+    Creates a default image for the tray icon. Use in case
+    no favicon.ico is found.
+    """
+    width = height = 250
+    color1 = (255, 255, 255)
+    color2 = (255, 0, 255)
+
+    image = Image.new('RGB', (width, height), color1)
+    dc = ImageDraw.Draw(image)
+    dc.rectangle(
+        (width // 2, 0, width, height // 2),
+        fill=color2)
+    dc.rectangle(
+        (0, height // 2, width // 2, height),
+        fill=color2)
+
+    return image
+
+
+def create_image():
+    try:
+        image = Image.open(r'./favicon.ico')
+        image = Image.composite(image, Image.new('RGB', image.size, 'white'), image)
+    except:
+        image = _create_default_image()
+    return image
+
+
+def create_systray():
+    menu = Menu(MenuItem('Powered by Soleta Networks!',
+                         lambda icon, item: 1))
+    icon = Icon('ogClient', create_image(), menu=menu)
+    assert icon.icon
+    icon.run()
+
+
+systray_p = Process(target=create_systray)
+
+
+class OgWindowsOperations:
+
+    def __init__(self):
+        mp.set_start_method('spawn')
+        systray_p.start()
+
+    def _restartBrowser(self, url):
+        raise NotImplementedError
+
+    def poweroff(self):
+        systray_p.terminate()
+
+    def reboot(self):
+        systray_p.terminate()
+
+    def shellrun(self, request, ogRest):
+        cmd = request.getrun()
+        try:
+            result = subprocess.run(cmd,
+                                    shell=True,
+                                    stdin=subprocess.DEVNULL,
+                                    capture_output=True,
+                                    text=True,
+                                    check=True)
+        except CalledProcessError as error:
+            if error.stderr:
+                return error.stderr
+            if error.stdout:
+                return error.stdout
+            return "{Non zero exit code and empty output}"
+        return result.stdout
+
+    def session(self, request, ogRest):
+        raise NotImplementedError
+
+    def hardware(self, path, ogRest):
+        raise NotImplementedError
+
+    def setup(self, request, ogRest):
+        raise NotImplementedError
+
+    def image_restore(self, request, ogRest):
+        raise NotImplementedError
+
+    def image_create(self, path, request, ogRest):
+        raise NotImplementedError
+
+    def refresh(self, ogRest):
+        return {"status": "WIN"}
+
+    def probe(self, ogRest):
+        return {'status': 'WIN' if ogRest.state != ThreadState.BUSY else 'BSY'}