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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2016 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* 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, see <http://www.gnu.org/licenses/>.
*
*/
package builtin
const timezoneControlSummary = `allows setting system timezone`
const timezoneControlBaseDeclarationSlots = `
timezone-control:
allow-installation:
slot-snap-type:
- core
deny-auto-connection: true
`
// http://bazaar.launchpad.net/~ubuntu-security/ubuntu-core-security/trunk/view/head:/data/apparmor/policygroups/ubuntu-core/16.04/timezone-control
const timezoneControlConnectedPlugAppArmor = `
# Description: Can manage timezones directly separate from 'config ubuntu-core'.
# Can change timezone via timedated D-Bus interface,
# Can read all properties of /org/freedesktop/timedate1 D-Bus object, see:
# https://www.freedesktop.org/wiki/Software/systemd/timedated/
#include <abstractions/dbus-strict>
/usr/share/zoneinfo/ r,
/usr/share/zoneinfo/** r,
/etc/{,writable/}timezone rw,
/etc/{,writable/}localtime rw,
/etc/{,writable/}localtime.tmp rw, # Required for the timedatectl wrapper (LP: #1650688)
# Introspection of org.freedesktop.timedate1
# do not use peer=(label=unconfined) here since this is DBus activated
dbus (send)
bus=system
path=/org/freedesktop/timedate1
interface=org.freedesktop.DBus.Introspectable
member=Introspect,
dbus (send)
bus=system
path=/org/freedesktop/timedate1
interface=org.freedesktop.timedate1
member="SetTimezone"
peer=(label=unconfined),
dbus (send)
bus=system
path=/org/freedesktop/timedate1
interface=org.freedesktop.timedate1
member="ListTimezones"
peer=(label=unconfined),
# Read all properties from timedate1
# do not use peer=(label=unconfined) here since this is DBus activated
dbus (send)
bus=system
path=/org/freedesktop/timedate1
interface=org.freedesktop.DBus.Properties
member=Get{,All},
# Receive timedate1 property changed events
dbus (receive)
bus=system
path=/org/freedesktop/timedate1
interface=org.freedesktop.DBus.Properties
member=PropertiesChanged
peer=(label=unconfined),
# As the core snap ships the timedatectl utility we can also allow
# clients to use it now that they have access to the relevant
# D-Bus method for setting the timezone via timedatectl's set-timezone
# command.
/usr/bin/timedatectl{,.real} ixr,
# timedatectl needs to bind the client side of the socket
unix (bind) type=stream addr="@*/bus/timedatectl*/system",
# Silence this noisy denial. systemd utilities look at /proc/1/environ to see
# if running in a container, but they will fallback gracefully. No other
# interfaces allow this denial, so no problems with silencing it for now. Note
# that allowing this triggers a 'ptrace trace peer=unconfined' denial, which we
# want to avoid.
deny @{PROC}/1/environ r,
`
const timezoneControlConnectedPlugSecComp = `
# Description: Can manage timezones directly separate from config ubuntu-core.
# timedatectl needs to bind the client side of the socket
bind
`
func init() {
registerIface(&commonInterface{
name: "timezone-control",
summary: timezoneControlSummary,
implicitOnCore: true,
implicitOnClassic: true,
baseDeclarationSlots: timezoneControlBaseDeclarationSlots,
connectedPlugAppArmor: timezoneControlConnectedPlugAppArmor,
connectedPlugSecComp: timezoneControlConnectedPlugSecComp,
})
}
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