#!/usr/bin/env python3
#
# Test case QMP's encrypted key management
#
# Copyright (C) 2019 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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/>.
#
import iotests
import os
import time
import json
test_img = os.path.join(iotests.test_dir, 'test.img')
class Secret:
def __init__(self, index):
self._id = "keysec" + str(index)
# you are not supposed to see the password...
self._secret = "hunter" + str(index)
def id(self):
return self._id
def secret(self):
return self._secret
def to_cmdline_object(self):
return [ "secret,id=" + self._id + ",data=" + self._secret]
def to_qmp_object(self):
return { "qom_type" : "secret", "id": self.id(),
"props": { "data": self.secret() } }
################################################################################
class EncryptionSetupTestCase(iotests.QMPTestCase):
# test case startup
def setUp(self):
# start the VM
self.vm = iotests.VM()
self.vm.launch()
# create the secrets and load 'em into the VM
self.secrets = [ Secret(i) for i in range(0, 6) ]
for secret in self.secrets:
result = self.vm.qmp("object-add", **secret.to_qmp_object())
self.assert_qmp(result, 'return', {})
if iotests.imgfmt == "qcow2":
self.pfx = "encrypt."
self.img_opts = [ '-o', "encrypt.format=luks" ]
else:
self.pfx = ""
self.img_opts = []
# test case shutdown
def tearDown(self):
# stop the VM
self.vm.shutdown()
###########################################################################
# create the encrypted block device
def createImg(self, file, secret):
iotests.qemu_img(
'create',
'--object', *secret.to_cmdline_object(),
'-f', iotests.imgfmt,
'-o', self.pfx + 'key-secret=' + secret.id(),
'-o', self.pfx + 'iter-time=10',
*self.img_opts,
file,
'1M')
###########################################################################
# open an encrypted block device
def openImageQmp(self, id, file, secret, read_only = False):
encrypt_options = {
'key-secret' : secret.id()
}
if iotests.imgfmt == "qcow2":
encrypt_options = {
'encrypt': {
'format':'luks',
**encrypt_options
}
}
result = self.vm.qmp('blockdev-add', **
{
'driver': iotests.imgfmt,
'node-name': id,
'read-only': read_only,
**encrypt_options,
'file': {
'driver': 'file',
'filename': test_img,
}
}
)
self.assert_qmp(result, 'return', {})
# close the encrypted block device
def closeImageQmp(self, id):
result = self.vm.qmp('blockdev-del', **{ 'node-name': id })
self.assert_qmp(result, 'return', {})
###########################################################################
# add a key to an encrypted block device
def addKeyQmp(self, id, new_secret, secret = None,
slot = None, force = False):
crypt_options = {
'state' : 'active',
'new-secret' : new_secret.id(),
'iter-time' : 10
}
if slot != None:
crypt_options['keyslot'] = slot
if secret != None:
crypt_options['secret'] = secret.id()
if iotests.imgfmt == "qcow2":
crypt_options['format'] = 'luks'
crypt_options = {
'encrypt': crypt_options
}
args = {
'node-name': id,
'job-id' : 'job_add_key',
'options' : {
'driver' : iotests.imgfmt,
**crypt_options
},
}
if force == True:
args['force'] = True
#TODO: check what jobs return
result = self.vm.qmp('x-blockdev-amend', **args)
assert result['return'] == {}
self.vm.run_job('job_add_key')
# erase a key from an encrypted block device
def eraseKeyQmp(self, id, old_secret = None, slot = None, force = False):
crypt_options = {
'state' : 'inactive',
}
if slot != None:
crypt_options['keyslot'] = slot
if old_secret != None:
crypt_options['old-secret'] = old_secret.id()
if iotests.imgfmt == "qcow2":
crypt_options['format'] = 'luks'
crypt_options = {
'encrypt': crypt_options
}
args = {
'node-name': id,
'job-id' : 'job_erase_key',
'options' : {
'driver' : iotests.imgfmt,
**crypt_options
},
}
if force == True:
args['force'] = True
result = self.vm.qmp('x-blockdev-amend', **args)
assert result['return'] == {}
self.vm.run_job('job_erase_key')
###########################################################################
# create image, and change its key
def testChangeKey(self):
# create the image with secret0 and open it
self.createImg(test_img, self.secrets[0]);
self.openImageQmp("testdev", test_img, self.secrets[0])
# add key to slot 1
self.addKeyQmp("testdev", new_secret = self.secrets[1])
# add key to slot 5
self.addKeyQmp("testdev", new_secret = self.secrets[2], slot=5)
# erase key from slot 0
self.eraseKeyQmp("testdev", old_secret = self.secrets[0])
#reopen the image with secret1
self.closeImageQmp("testdev")
self.openImageQmp("testdev", test_img, self.secrets[1])
# close and erase the image for good
self.closeImageQmp("testdev")
os.remove(test_img)
# test that if we erase the old password,
# we can still change the encryption keys using 'old-secret'
def testOldPassword(self):
# create the image with secret0 and open it
self.createImg(test_img, self.secrets[0]);
self.openImageQmp("testdev", test_img, self.secrets[0])
# add key to slot 1
self.addKeyQmp("testdev", new_secret = self.secrets[1])
# erase key from slot 0
self.eraseKeyQmp("testdev", old_secret = self.secrets[0])
# this will fail as the old password is no longer valid
self.addKeyQmp("testdev", new_secret = self.secrets[2])
# this will work
self.addKeyQmp("testdev", new_secret = self.secrets[2], secret = self.secrets[1])
# close and erase the image for good
self.closeImageQmp("testdev")
os.remove(test_img)
def testUseForceLuke(self):
self.createImg(test_img, self.secrets[0]);
self.openImageQmp("testdev", test_img, self.secrets[0])
# Add bunch of secrets
self.addKeyQmp("testdev", new_secret = self.secrets[1], slot=4)
self.addKeyQmp("testdev", new_secret = self.secrets[4], slot=2)
# overwrite an active secret
self.addKeyQmp("testdev", new_secret = self.secrets[5], slot=2)
self.addKeyQmp("testdev", new_secret = self.secrets[5], slot=2, force=True)
self.addKeyQmp("testdev", new_secret = self.secrets[0])
# Now erase all the secrets
self.eraseKeyQmp("testdev", old_secret = self.secrets[5])
self.eraseKeyQmp("testdev", slot=4)
# erase last keyslot
self.eraseKeyQmp("testdev", old_secret = self.secrets[0])
self.eraseKeyQmp("testdev", old_secret = self.secrets[0], force=True)
self.closeImageQmp("testdev")
os.remove(test_img)
if __name__ == '__main__':
iotests.verify_working_luks()
# Encrypted formats support
iotests.activate_logging()
iotests.main(supported_fmts = ['qcow2', 'luks'])
