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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2016-2018 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 networkSummary = `allows access to the network`
const networkBaseDeclarationSlots = `
network:
allow-installation:
slot-snap-type:
- core
`
// http://bazaar.launchpad.net/~ubuntu-security/ubuntu-core-security/trunk/view/head:/data/apparmor/policygroups/ubuntu-core/16.04/network
const networkConnectedPlugAppArmor = `
# Description: Can access the network as a client.
#include <abstractions/nameservice>
/run/systemd/resolve/stub-resolv.conf rk,
/etc/mdns.allow r, # not yet included in the mdns abstraction
network netlink dgram, # not yet included in the nameservice abstraction
# systemd-resolved (not yet included in nameservice abstraction)
#
# Allow access to the safe members of the systemd-resolved D-Bus API:
#
# https://www.freedesktop.org/wiki/Software/systemd/resolved/
#
# This API may be used directly over the D-Bus system bus or it may be used
# indirectly via the nss-resolve plugin:
#
# https://www.freedesktop.org/software/systemd/man/nss-resolve.html
#
#include <abstractions/dbus-strict>
dbus send
bus=system
path="/org/freedesktop/resolve1"
interface="org.freedesktop.resolve1.Manager"
member="Resolve{Address,Hostname,Record,Service}"
peer=(name="org.freedesktop.resolve1"),
# libnss-systemd (D-Bus portion from nameservice abstraction)
# Also allow lookups for systemd-exec's DynamicUsers via D-Bus
# https://www.freedesktop.org/software/systemd/man/systemd.exec.html
dbus send
bus=system
path="/org/freedesktop/systemd1"
interface="org.freedesktop.systemd1.Manager"
member="{GetDynamicUsers,LookupDynamicUserByName,LookupDynamicUserByUID}"
peer=(name="org.freedesktop.systemd1"),
#include <abstractions/ssl_certs>
@{PROC}/sys/net/core/somaxconn r,
@{PROC}/sys/net/ipv4/tcp_fastopen r,
# Allow using netcat as client
/{,usr/}bin/nc{,.openbsd} ixr,
`
// http://bazaar.launchpad.net/~ubuntu-security/ubuntu-core-security/trunk/view/head:/data/seccomp/policygroups/ubuntu-core/16.04/network
const networkConnectedPlugSecComp = `
# Description: Can access the network as a client.
bind
# FIXME: some kernels require this with common functions in go's 'net' library.
# While this should remain in network-bind, network-control and
# network-observe, for series 16 also have it here to not break existing snaps.
# Future snapd series may remove this in the future. LP: #1689536
socket AF_NETLINK - NETLINK_ROUTE
# Userspace SCTP
# https://github.com/sctplab/usrsctp/blob/master/usrsctplib/usrsctp.h
socket AF_CONN
`
func init() {
registerIface(&commonInterface{
name: "network",
summary: networkSummary,
implicitOnCore: true,
implicitOnClassic: true,
baseDeclarationSlots: networkBaseDeclarationSlots,
connectedPlugAppArmor: networkConnectedPlugAppArmor,
connectedPlugSecComp: networkConnectedPlugSecComp,
})
}
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