github.com/rigado/snapd@v2.42.5-go-mod+incompatible/interfaces/builtin/unity8_pim_common.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2016 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package builtin
    21  
    22  import (
    23  	"strings"
    24  
    25  	"github.com/snapcore/snapd/interfaces"
    26  	"github.com/snapcore/snapd/interfaces/apparmor"
    27  	"github.com/snapcore/snapd/interfaces/dbus"
    28  	"github.com/snapcore/snapd/interfaces/seccomp"
    29  	"github.com/snapcore/snapd/release"
    30  	"github.com/snapcore/snapd/snap"
    31  )
    32  
    33  const unity8PimCommonPermanentSlotAppArmor = `
    34  # Description: Allow operating as the EDS service. This gives privileged access
    35  # to the system.
    36  
    37  # DBus accesses
    38  #include <abstractions/dbus-session-strict>
    39  
    40  dbus (send)
    41  	bus=session
    42  	path=/org/freedesktop/DBus
    43  	interface=org.freedesktop.DBus
    44  	member={Request,Release}Name
    45  	peer=(name=org.freedesktop.DBus, label=unconfined),
    46  
    47  dbus (send)
    48  	bus=session
    49  	path=/org/freedesktop/*
    50  	interface=org.freedesktop.DBus.Properties
    51  	peer=(label=unconfined),
    52  
    53  # Allow services to communicate with each other
    54  dbus (receive, send)
    55  	peer=(label="snap.@{SNAP_INSTANCE_NAME}.*"),
    56  
    57  # Allow binding the service to the requested connection name
    58  dbus (bind)
    59  	bus=session
    60  	name="org.gnome.evolution.dataserver.Sources5",
    61  `
    62  
    63  const unity8PimCommonConnectedSlotAppArmor = `
    64  # Allow service to interact with connected clients
    65  
    66  ########################
    67  # SourceManager
    68  ########################
    69  dbus (receive, send)
    70  	bus=session
    71  	path=/org/gnome/evolution/dataserver/SourceManager{,/**}
    72  	peer=(label=###PLUG_SECURITY_TAGS###),
    73  `
    74  
    75  const unity8PimCommonConnectedPlugAppArmor = `
    76  # DBus accesses
    77  #include <abstractions/dbus-session-strict>
    78  
    79  ########################
    80  # SourceManager
    81  ########################
    82  dbus (receive, send)
    83  	bus=session
    84  	path=/org/gnome/evolution/dataserver/SourceManager{,/**}
    85  	peer=(label=###SLOT_SECURITY_TAGS###),
    86  
    87  # Allow clients to introspect the service
    88  dbus (send)
    89      bus=session
    90      path=/org/gnome/Evolution
    91      interface=org.freedesktop.DBus.Introspectable
    92      member=Introspect
    93      peer=(label=###SLOT_SECURITY_TAGS###),
    94  `
    95  
    96  const unity8PimCommonPermanentSlotSecComp = `
    97  # Description: Allow operating as the EDS service. This gives privileged access
    98  # to the system.
    99  accept
   100  accept4
   101  bind
   102  listen
   103  shutdown
   104  `
   105  
   106  type unity8PimCommonInterface struct {
   107  	name                  string
   108  	summary               string
   109  	baseDeclarationSlots  string
   110  	permanentSlotAppArmor string
   111  	connectedSlotAppArmor string
   112  	connectedPlugAppArmor string
   113  }
   114  
   115  func (iface *unity8PimCommonInterface) Name() string {
   116  	return iface.name
   117  }
   118  
   119  func (iface *unity8PimCommonInterface) StaticInfo() interfaces.StaticInfo {
   120  	return interfaces.StaticInfo{
   121  		Summary:              iface.summary,
   122  		BaseDeclarationSlots: iface.baseDeclarationSlots,
   123  	}
   124  }
   125  
   126  func (iface *unity8PimCommonInterface) DBusPermanentSlot(spec *dbus.Specification, slot *snap.SlotInfo) error {
   127  	//FIXME: Implement support after session services are available.
   128  	return nil
   129  }
   130  
   131  func (iface *unity8PimCommonInterface) AppArmorConnectedPlug(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
   132  	old := "###SLOT_SECURITY_TAGS###"
   133  	new := slotAppLabelExpr(slot)
   134  
   135  	originalSnippet := unity8PimCommonConnectedPlugAppArmor + "\n" + iface.connectedPlugAppArmor
   136  	spec.AddSnippet(strings.Replace(originalSnippet, old, new, -1))
   137  
   138  	// classic mode
   139  	if release.OnClassic {
   140  		// Let confined apps access unconfined service on classic
   141  		spec.AddSnippet(strings.Replace(originalSnippet, old, "unconfined", -1))
   142  	}
   143  
   144  	return nil
   145  }
   146  
   147  func (iface *unity8PimCommonInterface) AppArmorPermanentSlot(spec *apparmor.Specification, slot *snap.SlotInfo) error {
   148  	spec.AddSnippet(unity8PimCommonPermanentSlotAppArmor)
   149  	spec.AddSnippet(iface.permanentSlotAppArmor)
   150  	return nil
   151  }
   152  
   153  func (iface *unity8PimCommonInterface) AppArmorConnectedSlot(spec *apparmor.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
   154  	old := "###PLUG_SECURITY_TAGS###"
   155  	new := plugAppLabelExpr(plug)
   156  	snippet := unity8PimCommonConnectedSlotAppArmor
   157  	snippet += "\n" + iface.connectedSlotAppArmor
   158  	snippet = strings.Replace(snippet, old, new, -1)
   159  	spec.AddSnippet(snippet)
   160  	return nil
   161  }
   162  
   163  func (iface *unity8PimCommonInterface) SecCompPermanentSlot(spec *seccomp.Specification, slot *snap.SlotInfo) error {
   164  	spec.AddSnippet(unity8PimCommonPermanentSlotSecComp)
   165  	return nil
   166  }
   167  
   168  func (iface *unity8PimCommonInterface) AutoConnect(*snap.PlugInfo, *snap.SlotInfo) bool {
   169  	// allow what declarations allowed
   170  	return true
   171  }