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webvirtcloud/instances/tests/test_disk_isolation.py
catborise c55f52f025 test: each app keeps its tests in a tests package
131 test modules sat next to the code they test; instances alone had
51 of them beside views.py and utils.py. They move into a
tests/ package per app, and the JavaScript checks into
webvirtcloud/tests/js. Each non-empty tests.py becomes tests/test_views.py;
the empty generated stubs are removed.

Imports of the app's own modules become absolute, paths built from
__file__ go one level up, the live helper is instances.tests.livetest,
and coverage omits */tests/*. The suite discovers the same 960 tests as
before.
2026-10-12 15:17:30 +03:00

358 lines
16 KiB
Python

"""
Disk and media mutation views must be superuser-only (matching the UI, where
the Disk tab is only rendered for superusers), and even for superusers the
views must not act on volumes or option values taken blindly from the client.
"""
from unittest.mock import patch
from django.contrib.auth import get_user_model
from django.test import TestCase
from django.urls import reverse
from accounts.models import UserInstance
from computes.models import Compute
from instances.models import Instance
DISK_ENDPOINTS = [
("add_new_vol", []),
("add_existing_vol", []),
("edit_volume", []),
("delete_vol", []),
("detach_vol", []),
("add_cdrom", []),
("detach_cdrom", ["hda"]),
("mount_iso", []),
("unmount_iso", []),
]
VM_DISK = {
"dev": "vda",
"bus": "virtio",
"image": "vm-disk.qcow2",
"storage": "default",
"path": "/var/lib/libvirt/images/vm-disk.qcow2",
"format": "qcow2",
}
class DiskViewsTenantIsolationTestCase(TestCase):
def setUp(self):
User = get_user_model()
self.superuser = User.objects.create_superuser(
username="disk_super", email="disk_super@example.com", password="password"
)
self.change_user = User.objects.create_user(
username="disk_change_user", password="password"
)
self.staff_change_user = User.objects.create_user(
username="disk_staff_change_user", password="password", is_staff=True
)
self.compute = Compute.objects.create(
name="disk-compute", hostname="127.0.0.1", login="root", password="", type=1
)
self.instance = Instance.objects.create(
compute=self.compute,
name="disk-test-vm",
uuid="aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee",
)
for user in (self.change_user, self.staff_change_user):
UserInstance.objects.create(
instance=self.instance, user=user, is_change=True, is_delete=False
)
self.referer = f"/instances/{self.instance.id}/"
def _url(self, name, extra=()):
return reverse(f"instances:{name}", args=[self.instance.id, *extra])
def _post(self, name, data, extra=()):
return self.client.post(self._url(name, extra), data, HTTP_REFERER=self.referer)
def test_owner_with_is_change_cannot_mutate_disks(self):
for user in (self.change_user, self.staff_change_user):
self.client.force_login(user)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmStorage"
) as mock_storage, patch("instances.views.wvmCreate") as mock_create:
for name, extra in DISK_ENDPOINTS:
res = self._post(
name,
{"storage": "default", "name": "victim.qcow2", "dev": "vda"},
extra,
)
self.assertEqual(
res.status_code, 403, f"{user.username} POST {name} should be 403"
)
mock_wvm.assert_not_called()
mock_storage.assert_not_called()
mock_create.assert_not_called()
def test_delete_vol_deletes_the_volume_attached_to_dev_not_the_posted_one(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmStorage"
) as mock_storage:
mock_wvm.return_value.get_disk_devices.return_value = [VM_DISK]
res = self._post(
"delete_vol",
{"storage": "other-pool", "name": "victim.qcow2", "dev": "vda"},
)
self.assertEqual(res.status_code, 302)
mock_wvm.return_value.detach_disk.assert_called_once_with("vda")
self.assertEqual(mock_storage.call_args[0][-1], "default")
mock_storage.return_value.del_volume.assert_called_once_with("vm-disk.qcow2")
def test_delete_vol_refuses_dev_not_attached_to_vm(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmStorage"
) as mock_storage:
mock_wvm.return_value.get_disk_devices.return_value = [VM_DISK]
res = self._post(
"delete_vol",
{"storage": "default", "name": "victim.qcow2", "dev": "vdz"},
)
self.assertEqual(res.status_code, 302)
mock_wvm.return_value.detach_disk.assert_not_called()
mock_storage.return_value.del_volume.assert_not_called()
def test_edit_volume_rejects_unknown_cache_mode(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm:
proxy = mock_wvm.return_value
proxy.get_disk_devices.return_value = [VM_DISK]
proxy.get_media_devices.return_value = []
proxy.get_disk_bus_types.return_value = ["virtio", "sata", "scsi"]
proxy.get_cache_modes.return_value = {"default": "", "none": ""}
proxy.get_io_modes.return_value = {"default": "", "native": ""}
proxy.get_discard_modes.return_value = {"default": "", "unmap": ""}
proxy.get_detect_zeroes_modes.return_value = {"default": "", "on": ""}
res = self._post(
"edit_volume",
{
"edit_volume": "1",
"dev": "vda",
"vol_path": VM_DISK["path"],
"vol_bus_old": "virtio",
"vol_bus": "virtio",
"vol_format": "qcow2",
"vol_cache": "none' io='native",
},
)
self.assertEqual(res.status_code, 302)
proxy.edit_disk.assert_not_called()
proxy.attach_disk.assert_not_called()
proxy.detach_disk.assert_not_called()
def test_add_new_vol_rejects_unknown_bus(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmCreate"
) as mock_create, patch("instances.views.wvmStorage"):
proxy = mock_wvm.return_value
proxy.get_disk_devices.return_value = [VM_DISK]
proxy.get_media_devices.return_value = []
proxy.get_disk_bus_types.return_value = ["virtio", "sata", "scsi"]
proxy.get_cache_modes.return_value = {"default": "", "none": ""}
res = self._post(
"add_new_vol",
{
"storage": "default",
"name": "new-disk",
"format": "qcow2",
"size": "10",
"bus": "virtio'/><disk",
"cache": "default",
},
)
self.assertEqual(res.status_code, 302)
mock_create.return_value.create_volume.assert_not_called()
proxy.attach_disk.assert_not_called()
def test_add_existing_vol_rejects_volume_not_in_pool(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmStorage"
) as mock_storage:
proxy = mock_wvm.return_value
proxy.get_disk_devices.return_value = [VM_DISK]
proxy.get_media_devices.return_value = []
proxy.get_disk_bus_types.return_value = ["virtio", "sata", "scsi"]
proxy.get_cache_modes.return_value = {"default": "", "none": ""}
mock_storage.return_value.get_volumes.return_value = ["vm-disk.qcow2"]
res = self._post(
"add_existing_vol",
{
"selected_storage": "default",
"vols": "../../../etc/shadow",
"bus": "virtio",
"cache": "default",
},
)
self.assertEqual(res.status_code, 302)
proxy.attach_disk.assert_not_called()
def test_add_existing_vol_attaches_the_volume_by_its_own_path(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmStorage"
) as mock_storage:
proxy = mock_wvm.return_value
proxy.get_disk_devices.return_value = [VM_DISK]
proxy.get_media_devices.return_value = []
proxy.get_disk_bus_types.return_value = ["virtio", "sata", "scsi"]
proxy.get_cache_modes.return_value = {"default": "", "none": ""}
pool = mock_storage.return_value
pool.get_volumes.return_value = ["unit:0:0:1"]
pool.get_type.return_value = "iscsi"
pool.get_volume_type.return_value = "block"
pool.get_volume_format_type.return_value = None # an iSCSI pool knows no format
pool.get_target_path.return_value = "/dev/disk/by-path"
pool.get_volume.return_value.path.return_value = "/dev/disk/by-path/ip-192.0.2.1:3260-iscsi-iqn.example-lun-1"
res = self._post(
"add_existing_vol",
{"selected_storage": "iscsi", "vols": "unit:0:0:1", "bus": "virtio", "cache": "default"},
)
self.assertEqual(res.status_code, 302)
pool.get_volume.assert_called_once_with("unit:0:0:1")
self.assertEqual(
proxy.attach_disk.call_args.args[1], "/dev/disk/by-path/ip-192.0.2.1:3260-iscsi-iqn.example-lun-1"
)
self.assertEqual(proxy.attach_disk.call_args.kwargs["format_type"], "raw")
def _mock_disk_options(self, proxy):
proxy.get_disk_devices.return_value = [VM_DISK]
proxy.get_media_devices.return_value = []
proxy.get_disk_bus_types.return_value = ["virtio", "sata", "scsi"]
proxy.get_cache_modes.return_value = {"default": "", "none": ""}
proxy.get_io_modes.return_value = {"default": "", "native": ""}
proxy.get_discard_modes.return_value = {"default": "", "unmap": ""}
proxy.get_detect_zeroes_modes.return_value = {"default": "", "on": ""}
def test_add_new_vol_rejects_unsafe_volume_name(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmCreate"
) as mock_create, patch("instances.views.wvmStorage"):
self._mock_disk_options(mock_wvm.return_value)
res = self._post(
"add_new_vol",
{
"storage": "default",
"name": "x</name><key>/etc/shadow",
"format": "qcow2",
"size": "10",
"bus": "virtio",
"cache": "default",
},
)
self.assertEqual(res.status_code, 302)
mock_create.return_value.create_volume.assert_not_called()
def test_edit_volume_accepts_valid_options(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm:
proxy = mock_wvm.return_value
self._mock_disk_options(proxy)
res = self._post(
"edit_volume",
{
"edit_volume": "1",
"dev": "vda",
"vol_path": VM_DISK["path"],
"vol_bus_old": "virtio",
"vol_bus": "virtio",
"vol_format": "qcow2",
"vol_serial": "SER-01",
"vol_cache": "none",
"vol_io_mode": "native",
"vol_discard_mode": "unmap",
"vol_detect_zeroes": "on",
},
)
self.assertEqual(res.status_code, 302)
proxy.edit_disk.assert_called_once_with(
"vda", VM_DISK["path"], False, False, "virtio", "SER-01", "qcow2",
"none", "native", "unmap", "on",
)
def _edit_volume_post(self, **extra):
data = {
"edit_volume": "1",
"dev": "vda",
"vol_path": VM_DISK["path"],
"vol_bus_old": "virtio",
"vol_bus": "virtio",
"vol_format": "qcow2",
"vol_cache": "none",
}
data.update(extra)
return self._post("edit_volume", data)
def test_edit_volume_bus_change_keeps_the_disk_and_applies_options(self):
from vrtManager.instance import wvmInstance
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance", autospec=wvmInstance) as mock_wvm:
proxy = mock_wvm.return_value
self._mock_disk_options(proxy)
proxy.get_status.return_value = 1
res = self._edit_volume_post(vol_bus="sata")
self.assertEqual(res.status_code, 302)
proxy.attach_disk.assert_not_called()
proxy.detach_disk.assert_not_called()
proxy.edit_disk.assert_called_once()
self.assertEqual(proxy.edit_disk.call_args.args[0], "vda")
self.assertEqual(proxy.edit_disk.call_args.args[4], "sata")
def test_edit_volume_keeps_current_format_when_field_is_none_or_empty(self):
self.client.force_login(self.superuser)
for value in ("None", ""):
with self.subTest(vol_format=value), patch("instances.models.wvmInstance") as mock_wvm:
proxy = mock_wvm.return_value
self._mock_disk_options(proxy)
self._edit_volume_post(vol_format=value)
proxy.edit_disk.assert_called_once()
self.assertEqual(proxy.edit_disk.call_args[0][6], VM_DISK["format"])
def test_disk_names_with_trailing_newline_are_rejected(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmCreate"
) as mock_create, patch("instances.views.wvmStorage"):
self._mock_disk_options(mock_wvm.return_value)
self._post(
"add_new_vol",
{"storage": "default", "name": "disk\n", "format": "qcow2", "size": "1",
"bus": "virtio", "cache": "default"},
)
mock_create.return_value.create_volume.assert_not_called()
def test_add_new_vol_attaches_the_format_the_pool_created(self):
self.client.force_login(self.superuser)
with patch("instances.models.wvmInstance") as mock_wvm, patch(
"instances.views.wvmCreate"
) as mock_create, patch("instances.views.wvmStorage") as mock_storage:
proxy = mock_wvm.return_value
self._mock_disk_options(proxy)
mock_create.return_value.create_volume.return_value = "/mnt/nfs/disk.img"
pool = mock_storage.return_value
pool.get_type.return_value = "netfs"
pool.get_volume_type.return_value = "file"
pool.get_volume_format_type.return_value = "raw" # a netfs pool creates raw
self._post(
"add_new_vol",
{"storage": "nfs", "name": "disk", "format": "qcow2", "size": "1", "bus": "virtio", "cache": "default"},
)
pool.get_volume_format_type.assert_called_once_with("disk.img")
self.assertEqual(proxy.attach_disk.call_args.kwargs["format_type"], "raw")
def test_edit_volume_accepts_a_disk_without_any_driver_format(self):
self.client.force_login(self.superuser)
no_format_disk = dict(VM_DISK, format=None)
with patch("instances.models.wvmInstance") as mock_wvm:
proxy = mock_wvm.return_value
self._mock_disk_options(proxy)
proxy.get_disk_devices.return_value = [no_format_disk]
self._edit_volume_post(vol_format="None")
proxy.edit_disk.assert_called_once()
self.assertEqual(proxy.edit_disk.call_args[0][6], "")