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

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2016-2017 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_test
    21  
    22  import (
    23  	. "gopkg.in/check.v1"
    24  
    25  	"github.com/snapcore/snapd/interfaces"
    26  	"github.com/snapcore/snapd/interfaces/apparmor"
    27  	"github.com/snapcore/snapd/interfaces/builtin"
    28  	"github.com/snapcore/snapd/interfaces/dbus"
    29  	"github.com/snapcore/snapd/interfaces/seccomp"
    30  	"github.com/snapcore/snapd/interfaces/udev"
    31  	"github.com/snapcore/snapd/release"
    32  	"github.com/snapcore/snapd/snap"
    33  	"github.com/snapcore/snapd/snap/snaptest"
    34  	"github.com/snapcore/snapd/testutil"
    35  )
    36  
    37  type ModemManagerInterfaceSuite struct {
    38  	iface    interfaces.Interface
    39  	slotInfo *snap.SlotInfo
    40  	slot     *interfaces.ConnectedSlot
    41  	plugInfo *snap.PlugInfo
    42  	plug     *interfaces.ConnectedPlug
    43  }
    44  
    45  const modemmgrMockSlotSnapInfoYaml = `name: modem-manager
    46  version: 1.0
    47  apps:
    48   mm:
    49    command: foo
    50    slots: [modem-manager]
    51  `
    52  
    53  const modemmgrMockPlugSnapInfoYaml = `name: modem-manager
    54  version: 1.0
    55  plugs:
    56   modem-manager:
    57    interface: modem-manager
    58  apps:
    59   mmcli:
    60    command: foo
    61    plugs:
    62     - modem-manager
    63  `
    64  
    65  var _ = Suite(&ModemManagerInterfaceSuite{
    66  	iface: builtin.MustInterface("modem-manager"),
    67  })
    68  
    69  func (s *ModemManagerInterfaceSuite) SetUpTest(c *C) {
    70  	s.plugInfo = &snap.PlugInfo{
    71  		Snap:      &snap.Info{SuggestedName: "modem-manager"},
    72  		Name:      "mmcli",
    73  		Interface: "modem-manager",
    74  	}
    75  	s.plug = interfaces.NewConnectedPlug(s.plugInfo, nil, nil)
    76  	slotSnap := snaptest.MockInfo(c, modemmgrMockSlotSnapInfoYaml, nil)
    77  	s.slotInfo = slotSnap.Slots["modem-manager"]
    78  	s.slot = interfaces.NewConnectedSlot(s.slotInfo, nil, nil)
    79  }
    80  
    81  func (s *ModemManagerInterfaceSuite) TestName(c *C) {
    82  	c.Assert(s.iface.Name(), Equals, "modem-manager")
    83  }
    84  
    85  // The label glob when all apps are bound to the modem-manager slot
    86  func (s *ModemManagerInterfaceSuite) TestConnectedPlugSnippetUsesSlotLabelAll(c *C) {
    87  	app1 := &snap.AppInfo{Name: "app1"}
    88  	app2 := &snap.AppInfo{Name: "app2"}
    89  	slot := interfaces.NewConnectedSlot(&snap.SlotInfo{
    90  		Snap: &snap.Info{
    91  			SuggestedName: "modem-manager-prod",
    92  			Apps:          map[string]*snap.AppInfo{"app1": app1, "app2": app2},
    93  		},
    94  		Name:      "modem-manager",
    95  		Interface: "modem-manager",
    96  		Apps:      map[string]*snap.AppInfo{"app1": app1, "app2": app2},
    97  	}, nil, nil)
    98  
    99  	release.OnClassic = false
   100  
   101  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   102  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   103  
   104  	apparmorSpec := &apparmor.Specification{}
   105  	err := apparmorSpec.AddConnectedPlug(s.iface, plug, slot)
   106  	c.Assert(err, IsNil)
   107  	c.Assert(apparmorSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mmcli"})
   108  	c.Assert(apparmorSpec.SnippetForTag("snap.modem-manager.mmcli"), testutil.Contains, `peer=(label="snap.modem-manager-prod.*"),`)
   109  }
   110  
   111  // The label uses alternation when some, but not all, apps is bound to the modem-manager slot
   112  func (s *ModemManagerInterfaceSuite) TestConnectedPlugSnippetUsesSlotLabelSome(c *C) {
   113  	app1 := &snap.AppInfo{Name: "app1"}
   114  	app2 := &snap.AppInfo{Name: "app2"}
   115  	app3 := &snap.AppInfo{Name: "app3"}
   116  	slot := interfaces.NewConnectedSlot(&snap.SlotInfo{
   117  		Snap: &snap.Info{
   118  			SuggestedName: "modem-manager",
   119  			Apps:          map[string]*snap.AppInfo{"app1": app1, "app2": app2, "app3": app3},
   120  		},
   121  		Name:      "modem-manager",
   122  		Interface: "modem-manager",
   123  		Apps:      map[string]*snap.AppInfo{"app1": app1, "app2": app2},
   124  	}, nil, nil)
   125  
   126  	release.OnClassic = false
   127  
   128  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   129  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   130  
   131  	apparmorSpec := &apparmor.Specification{}
   132  	err := apparmorSpec.AddConnectedPlug(s.iface, plug, slot)
   133  	c.Assert(err, IsNil)
   134  	c.Assert(apparmorSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mmcli"})
   135  	c.Assert(apparmorSpec.SnippetForTag("snap.modem-manager.mmcli"), testutil.Contains, `peer=(label="snap.modem-manager.{app1,app2}"),`)
   136  }
   137  
   138  // The label uses short form when exactly one app is bound to the modem-manager slot
   139  func (s *ModemManagerInterfaceSuite) TestConnectedPlugSnippetUsesSlotLabelOne(c *C) {
   140  	app := &snap.AppInfo{Name: "app"}
   141  	slot := interfaces.NewConnectedSlot(&snap.SlotInfo{
   142  		Snap: &snap.Info{
   143  			SuggestedName: "modem-manager",
   144  			Apps:          map[string]*snap.AppInfo{"app": app},
   145  		},
   146  		Name:      "modem-manager",
   147  		Interface: "modem-manager",
   148  		Apps:      map[string]*snap.AppInfo{"app": app},
   149  	}, nil, nil)
   150  
   151  	release.OnClassic = false
   152  
   153  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   154  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   155  
   156  	apparmorSpec := &apparmor.Specification{}
   157  	err := apparmorSpec.AddConnectedPlug(s.iface, plug, slot)
   158  	c.Assert(err, IsNil)
   159  	c.Assert(apparmorSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mmcli"})
   160  	c.Assert(apparmorSpec.SnippetForTag("snap.modem-manager.mmcli"), testutil.Contains, `peer=(label="snap.modem-manager.app"),`)
   161  }
   162  
   163  func (s *ModemManagerInterfaceSuite) TestConnectedPlugSnippetUsesUnconfinedLabelNot(c *C) {
   164  	release.OnClassic = false
   165  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   166  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   167  
   168  	apparmorSpec := &apparmor.Specification{}
   169  	err := apparmorSpec.AddConnectedPlug(s.iface, plug, s.slot)
   170  	c.Assert(err, IsNil)
   171  	c.Assert(apparmorSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mmcli"})
   172  	snippet := apparmorSpec.SnippetForTag("snap.modem-manager.mmcli")
   173  	c.Assert(snippet, Not(testutil.Contains), "peer=(label=unconfined),")
   174  	c.Assert(snippet, testutil.Contains, "org/freedesktop/ModemManager1")
   175  }
   176  
   177  func (s *ModemManagerInterfaceSuite) TestConnectedPlugSnippetUsesUnconfinedLabelOnClassic(c *C) {
   178  	release.OnClassic = true
   179  
   180  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   181  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   182  	apparmorSpec := &apparmor.Specification{}
   183  	err := apparmorSpec.AddConnectedPlug(s.iface, plug, s.slot)
   184  	c.Assert(err, IsNil)
   185  	c.Assert(apparmorSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mmcli"})
   186  	c.Assert(apparmorSpec.SnippetForTag("snap.modem-manager.mmcli"), testutil.Contains, "peer=(label=unconfined),")
   187  }
   188  
   189  func (s *ModemManagerInterfaceSuite) TestUsedSecuritySystems(c *C) {
   190  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   191  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   192  	apparmorSpec := &apparmor.Specification{}
   193  	err := apparmorSpec.AddConnectedPlug(s.iface, plug, s.slot)
   194  	c.Assert(err, IsNil)
   195  	c.Assert(apparmorSpec.SecurityTags(), HasLen, 1)
   196  
   197  	dbusSpec := &dbus.Specification{}
   198  	err = dbusSpec.AddConnectedPlug(s.iface, plug, s.slot)
   199  	c.Assert(err, IsNil)
   200  	c.Assert(dbusSpec.SecurityTags(), HasLen, 1)
   201  
   202  	dbusSpec = &dbus.Specification{}
   203  	err = dbusSpec.AddPermanentSlot(s.iface, s.slotInfo)
   204  	c.Assert(err, IsNil)
   205  	c.Assert(dbusSpec.SecurityTags(), HasLen, 1)
   206  
   207  	udevSpec := &udev.Specification{}
   208  	c.Assert(udevSpec.AddPermanentSlot(s.iface, s.slotInfo), IsNil)
   209  	c.Assert(udevSpec.Snippets(), HasLen, 3)
   210  	c.Assert(udevSpec.Snippets()[0], testutil.Contains, `SUBSYSTEMS=="usb"`)
   211  	c.Assert(udevSpec.Snippets(), testutil.Contains, `# modem-manager
   212  KERNEL=="tty[a-zA-Z]*[0-9]*|cdc-wdm[0-9]*", TAG+="snap_modem-manager_mm"`)
   213  	c.Assert(udevSpec.Snippets(), testutil.Contains, `TAG=="snap_modem-manager_mm", RUN+="/usr/lib/snapd/snap-device-helper $env{ACTION} snap_modem-manager_mm $devpath $major:$minor"`)
   214  }
   215  
   216  func (s *ModemManagerInterfaceSuite) TestPermanentSlotDBus(c *C) {
   217  	dbusSpec := &dbus.Specification{}
   218  	err := dbusSpec.AddPermanentSlot(s.iface, s.slotInfo)
   219  	c.Assert(err, IsNil)
   220  	c.Assert(dbusSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mm"})
   221  	snippet := dbusSpec.SnippetForTag("snap.modem-manager.mm")
   222  	c.Assert(snippet, testutil.Contains, "allow own=\"org.freedesktop.ModemManager1\"")
   223  	c.Assert(snippet, testutil.Contains, "allow send_destination=\"org.freedesktop.ModemManager1\"")
   224  }
   225  
   226  func (s *ModemManagerInterfaceSuite) TestPermanentSlotSecComp(c *C) {
   227  	seccompSpec := &seccomp.Specification{}
   228  	err := seccompSpec.AddPermanentSlot(s.iface, s.slotInfo)
   229  	c.Assert(err, IsNil)
   230  	c.Assert(seccompSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mm"})
   231  	c.Check(seccompSpec.SnippetForTag("snap.modem-manager.mm"), testutil.Contains, "listen\n")
   232  }
   233  
   234  func (s *ModemManagerInterfaceSuite) TestConnectedPlugDBus(c *C) {
   235  	plugSnap := snaptest.MockInfo(c, modemmgrMockPlugSnapInfoYaml, nil)
   236  	plug := interfaces.NewConnectedPlug(plugSnap.Plugs["modem-manager"], nil, nil)
   237  
   238  	dbusSpec := &dbus.Specification{}
   239  	err := dbusSpec.AddConnectedPlug(s.iface, plug, s.slot)
   240  	c.Assert(err, IsNil)
   241  	c.Assert(dbusSpec.SecurityTags(), DeepEquals, []string{"snap.modem-manager.mmcli"})
   242  	snippet := dbusSpec.SnippetForTag("snap.modem-manager.mmcli")
   243  	c.Assert(snippet, testutil.Contains, "deny own=\"org.freedesktop.ModemManager1\"")
   244  	c.Assert(snippet, testutil.Contains, "deny send_destination=\"org.freedesktop.ModemManager1\"")
   245  }
   246  
   247  func (s *ModemManagerInterfaceSuite) TestInterfaces(c *C) {
   248  	c.Check(builtin.Interfaces(), testutil.DeepContains, s.iface)
   249  }