Add upgrades module that can run unattended-upgrades.

actions/upgrades

@@ -0,0 +1,111 @@
+#!/usr/bin/python3
+# -*- mode: python -*-
+#
+# This file is part of Plinth.
+#
+# 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.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Configures or runs unattended-upgrades
+"""
+
+import argparse
+import os
+import subprocess
+
+CONF_FILE = '/etc/apt/apt.conf.d/50unattended-upgrades'
+AUTO_CONF_FILE = '/etc/apt/apt.conf.d/20auto-upgrades'
+
+
+def parse_arguments():
+    """REturn parsed command line arguments as dictionary"""
+    parser = argparse.ArgumentParser()
+    subparsers = parser.add_subparsers(dest='subcommand', help='Sub command')
+
+    # Run unattended-upgrades
+    subparsers.add_parser('run', help='Upgrade packages on the system')
+
+    # Enable automatic upgrades
+    subparsers.add_parser('enable-auto', help='Enable automatic upgrades')
+
+    # Disable automatic upgrades
+    subparsers.add_parser('disable-auto', help='Disable automatic upgrades.')
+
+    return parser.parse_args()
+
+
+def subcommand_run(_):
+    """Run unattended-upgrades"""
+    try:
+        setup()
+    except FileNotFoundError:
+        print('Error: Could not configure unattended-upgrades.')
+        return
+
+    try:
+        output = subprocess.check_output(['unattended-upgrades', '-v'])
+    except subprocess.CalledProcessError as error:
+        print('Error: %s', error)
+    except FileNotFoundError:
+        print('Error: unattended-upgrades is not available.')
+    else:
+        print('%s', output.decode())
+
+
+def subcommand_enable_auto(_):
+    """Enable automatic upgrades"""
+    try:
+        setup()
+    except FileNotFoundError:
+        print('Error: Could not configure unattended-upgrades.')
+        return
+
+    with open(AUTO_CONF_FILE, 'w') as conffile:
+        conffile.write('APT::Periodic::Update-Package-Lists "1";\n')
+        conffile.write('APT::Periodic::Unattended-Upgrade "1";\n')
+
+
+def subcommand_disable_auto(_):
+    """Disable automatic upgrades"""
+    os.remove(AUTO_CONF_FILE)
+
+
+def setup():
+    """Sets unattended-upgrades config to upgrade any package from Debian."""
+    with open(CONF_FILE, 'r') as conffile:
+        lines = conffile.readlines()
+
+    for line in lines:
+        if '"origin=Debian";' in line:
+            return  # already configured
+
+    with open(CONF_FILE, 'w') as conffile:
+        for line in lines:
+            conffile.write(line)
+            if 'Unattended-Upgrade::Origins-Pattern {' in line:
+                conffile.write('        "origin=Debian";\n')
+
+
+def main():
+    """Parse arguments and perform all duties"""
+    arguments = parse_arguments()
+
+    subcommand = arguments.subcommand.replace('-', '_')
+    subcommand_method = globals()['subcommand_' + subcommand]
+    subcommand_method(arguments)
+
+
+if __name__ == '__main__':
+    main()

data/etc/plinth/modules-enabled/upgrades

@@ -0,0 +1 @@
+plinth.modules.upgrades

plinth/modules/upgrades/__init__.py

@@ -0,0 +1,27 @@
+#
+# This file is part of Plinth.
+#
+# 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.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Plinth module for upgrades
+"""
+
+from . import upgrades
+from .upgrades import init
+
+__all__ = ['upgrades', 'init']
+
+depends = ['plinth.modules.system']

plinth/modules/upgrades/templates/upgrades.html

@@ -0,0 +1,32 @@
+{% extends 'base.html' %}
+{% comment %}
+#
+# This file is part of Plinth.
+#
+# 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.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+{% endcomment %}
+
+{% block content %}
+
+<h2>{{ title }}</h2>
+
+<p>This will run unattended-upgrades, which will attempt to upgrade your system
+with the latest Debian packages. It may take a minute to complete.</p>
+
+<p><a class="btn btn-primary btn-lg" href="{% url 'upgrades:run' %}">
+  Upgrade now &raquo;
+</a></p>
+
+{% endblock %}

plinth/modules/upgrades/templates/upgrades_run.html

@@ -0,0 +1,35 @@
+{% extends 'base.html' %}
+{% comment %}
+#
+# This file is part of Plinth.
+#
+# 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.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+{% endcomment %}
+
+{% block content %}
+
+<h2>{{title}}</h2>
+
+{% if upgrades_error %}
+  <p>There was an error while upgrading:<p>
+  <pre>{{ upgrades_error }}</pre>
+{% endif %}
+
+{% if upgrades_output %}
+  <p>Output from unattended-upgrades:</p>
+  <pre>{{ upgrades_output }}</pre>
+{% endif %}
+
+{% endblock %}

plinth/modules/upgrades/upgrades.py

@@ -0,0 +1,63 @@
+#
+# This file is part of Plinth.
+#
+# 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.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+Plinth module for upgrades
+"""
+
+from django.contrib.auth.decorators import login_required
+from django.template.response import TemplateResponse
+from gettext import gettext as _
+
+from plinth import actions
+from plinth import cfg
+from plinth import package
+from plinth.errors import ActionError
+
+
+def init():
+    """Initialize the module"""
+    menu = cfg.main_menu.get('system:index')
+    menu.add_urlname("Upgrades", "glyphicon-refresh",
+                     "upgrades:index", 21)
+
+
+@login_required
+@package.required('unattended-upgrades')
+def index(request):
+    """Serve the index page"""
+    return TemplateResponse(request, 'upgrades.html',
+                            {'title': _('Package Upgrades')})
+
+
+@login_required
+@package.required('unattended-upgrades')
+def run(request):
+    """Run upgrades and show the output page"""
+    output = ''
+    error = ''
+    try:
+        output = actions.superuser_run('upgrades', ['run'])
+    except ActionError as exception:
+        output, error = exception.args[1:]
+    except Exception as exception:
+        error = str(exception)
+
+    return TemplateResponse(request, 'upgrades_run.html',
+                            {'title': _('Package Upgrades'),
+                             'upgrades_output': output,
+                             'upgrades__error': error})

plinth/modules/upgrades/urls.py

@@ -0,0 +1,29 @@
+#
+# This file is part of Plinth.
+#
+# 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.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+"""
+URLs for the upgrades module
+"""
+
+from django.conf.urls import patterns, url
+
+
+urlpatterns = patterns(
+    'plinth.modules.upgrades.upgrades',
+    url(r'^sys/upgrades/$', 'index', name='index'),
+    url(r'^sys/upgrades/run/$', 'run', name='run'),
+    )