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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2020 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
// On systems where the slot is provided by an app snap, the cups interface is
// the companion interface to the cups-control interface. The design of these
// interfaces is based on the idea that the slot implementation (eg cupsd) is
// expected to query snapd to determine if the cups-control interface is
// connected or not for the peer client process and the print service will
// mediate admin functionality (ie, the rules in these interfaces allow
// connecting to the print service, but do not implement enforcement rules; it
// is up to the print service to provide enforcement).
const cupsSummary = `allows access to the CUPS socket for printing`
// cups is currently only available via a providing app snap and this interface
// assumes that the providing app snap also slots 'cups-control' (the current
// design allows the snap provider to slots both cups-control and cups or just
// cups-control (like with implicit classic or any slot provider without
// mediation patches), but not just cups).
const cupsBaseDeclarationSlots = `
cups:
allow-installation:
slot-snap-type:
- app
deny-connection: true
deny-auto-connection: true
`
const cupsConnectedPlugAppArmor = `
# Allow communicating with the cups server
#include <abstractions/cups-client>
/{,var/}run/cups/printcap r,
`
func init() {
registerIface(&commonInterface{
name: "cups",
summary: cupsSummary,
implicitOnCore: false,
implicitOnClassic: false,
baseDeclarationSlots: cupsBaseDeclarationSlots,
connectedPlugAppArmor: cupsConnectedPlugAppArmor,
})
}
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