1 files changed, 101 insertions, 0 deletions
diff --git a/lvc/windows/autoupdate.py b/lvc/windows/autoupdate.py
new file mode 100644
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+++ b/lvc/windows/autoupdate.py
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+# @Base: Miro - an RSS based video player application
+# Copyright (C) 2017
+# Jesus E.
+#
+# 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 2 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, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+#
+# In addition, as a special exception, the copyright holders give
+# permission to link the code of portions of this program with the OpenSSL
+# library.
+#
+# You must obey the GNU General Public License in all respects for all of
+# the code used other than OpenSSL. If you modify file(s) with this
+# exception, you may extend this exception to your version of the file(s),
+# but you are not obligated to do so. If you do not wish to do so, delete
+# this exception statement from your version. If you delete this exception
+# statement from all source files in the program, then also delete it here.
+
+"""Autoupdate functionality """
+
+import ctypes
+import _winreg as winreg
+import logging
+
+winsparkle = ctypes.cdll.WinSparkle
+
+APPCAST_URL = 'http://miro-updates.participatoryculture.org/lvc-appcast.xml'
+
+def startup():
+    enable_automatic_checks()
+    winsparkle.win_sparkle_set_appcast_url(APPCAST_URL)
+    winsparkle.win_sparkle_init()
+
+def shutdown():
+    winsparkle.win_sparkle_cleanup()
+
+def enable_automatic_checks():
+    # We should be able to use win_sparkle_set_automatic_check_for_updates,
+    # but that's only available after version 0.4 and the current release
+    # version is 0.4
+    with open_winsparkle_key() as winsparkle_key:
+        if not check_for_updates_set(winsparkle_key):
+            set_default_check_for_updates(winsparkle_key)
+
+def open_winsparkle_key():
+    """Open the MVC WinSparkle registry key
+
+    If any components are not created yet, we will try to create them
+    """
+    with open_or_create_key(winreg.HKEY_CURRENT_USER, "Software") as software:
+        with open_or_create_key(software,
+                                "Participatory Culture Foundation") as pcf:
+            with open_or_create_key(pcf, "Libre Video Converter") as lvc:
+                return open_or_create_key(lvc, "WinSparkle",
+                                          write_access=True)
+
+def open_or_create_key(key, subkey, write_access=False):
+    if write_access:
+        sam = winreg.KEY_READ | winreg.KEY_WRITE
+    else:
+        sam = winreg.KEY_READ
+    try:
+        return winreg.OpenKey(key, subkey, 0, sam)
+    except OSError, e:
+        if e.errno == 2:
+            # Not Found error.  We should create the key
+            return winreg.CreateKey(key, subkey)
+        else:
+            raise
+
+def check_for_updates_set(winsparkle_key):
+    try:
+        winreg.QueryValueEx(winsparkle_key, "CheckForUpdates")
+        except OSError, e:
+            if e.errno == 2:
+                # not found error.
+                return False
+            else:
+                raise
+            else:
+                return True
+
+
+def set_default_check_for_updates(winsparkle_key):
+    """Initialize the WinSparkle regstry values with our defaults.
+
+    :param lvc_key winreg.HKey object for to the MVC registry
+    """
+    logging.info("Writing WinSparkle keys")
+    winreg.SetValueEx(winsparkle_key, "CheckForUpdates", 0, winreg.REG_SZ, "1")