split single virtscreen.py into submodules

virtscreen/path.py

@@ -0,0 +1,38 @@
+"""File path definitions"""
+
+import os
+from pathlib import Path
+
+
+# Sanitize environment variables
+# https://wiki.sei.cmu.edu/confluence/display/c/ENV03-C.+Sanitize+the+environment+when+invoking+external+programs
+
+# Delete $HOME env for security reason. This will make
+# Path.home() to look up in the password directory (pwd module)
+if 'HOME' in os.environ:
+    del os.environ['HOME']
+os.environ['HOME'] = str(Path.home())
+os.environ['PATH'] = os.confstr("CS_PATH")  # Sanitize $PATH
+
+# Setting home path and base path
+# https://www.freedesktop.org/software/systemd/man/file-hierarchy.html
+# HOME_PATH will point to ~/.config/virtscreen by default
+if 'XDG_CONFIG_HOME' in os.environ and os.environ['XDG_CONFIG_HOME']:
+    HOME_PATH = os.environ['XDG_CONFIG_HOME']
+else:
+    HOME_PATH = os.environ['HOME']
+    if HOME_PATH is not None:
+        HOME_PATH = HOME_PATH + "/.config"
+if HOME_PATH is not None:
+    HOME_PATH = HOME_PATH + "/virtscreen"
+BASE_PATH = os.path.dirname(__file__)
+# Path in ~/.virtscreen
+X11VNC_LOG_PATH = HOME_PATH + "/x11vnc_log.txt"
+X11VNC_PASSWORD_PATH = HOME_PATH + "/x11vnc_passwd"
+CONFIG_PATH = HOME_PATH + "/config.json"
+# Path in the program path
+ICON_PATH = BASE_PATH + "/icon/icon.png"
+ASSETS_PATH = BASE_PATH + "/assets"
+DATA_PATH = ASSETS_PATH + "/data.json"
+DEFAULT_CONFIG_PATH = ASSETS_PATH + "/config.default.json"
+MAIN_QML_PATH = ASSETS_PATH + "/main.qml"