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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import os
import re
from marionette_driver import Wait
from marionette_harness import MarionetteTestCase
INDEXED_DB_PBM_PREF = "dom.indexedDB.privateBrowsing.enabled"
class IDBEncryptionPBM(MarionetteTestCase):
"""
Bug1784966: Ensure IDB data gets encrypted in Private Browsing Mode.
We need to ensure data inside both sqlite fields and blob files under
*.sqllite gets encrypted.
"""
def setUp(self):
super(IDBEncryptionPBM, self).setUp()
self.IDBName = "IDBTest"
self.IDBStoreName = "IDBTestStore"
self.IDBVersion = 1
self.IDBValue = "test_IDB_Encryption_PBM"
self.profilePath = self.marionette.instance.profile.profile
self.defaultPrefValue = self.marionette.get_pref(INDEXED_DB_PBM_PREF)
self.marionette.set_pref(INDEXED_DB_PBM_PREF, True)
# Navigate by opening a new private window
pbmWindowHandle = self.marionette.open(type="window", private=True)["handle"]
self.marionette.switch_to_window(pbmWindowHandle)
self.marionette.navigate(
self.marionette.absolute_url("dom/indexedDB/basicIDB_PBM.html")
)
self.idbStoragePath = self.getIDBStoragePath()
def tearDown(self):
super(IDBEncryptionPBM, self).setUp()
self.marionette.set_pref(INDEXED_DB_PBM_PREF, self.defaultPrefValue)
# closes the new private window we opened in the setUp and referred by 'pbmWindowHandle'
self.marionette.close()
def test_ensure_encrypted_blob(self):
self.marionette.execute_script(
"""
const [idb, store, key, value] = arguments;
const blobValue = new Blob([value], {type:'text/plain'});
window.wrappedJSObject.addDataIntoIDB(idb, store, key, blobValue);
""",
script_args=(self.IDBName, self.IDBStoreName, "blobKey", self.IDBValue),
)
self.ensureInvariantHolds(lambda _: self.sqliteWALReleased())
self.ensureInvariantHolds(
lambda _: self.findDirObj(self.idbStoragePath, ".files", False) is not None
)
idbBlobDir = self.findDirObj(self.idbStoragePath, ".files", False)
# seems like there's a timing issue here. There are sometimes no blob file
# even after WAL is released. Allowing some buffer time and ensuring blob file
# exists before validating it's contents
idbBlobPath = os.path.join(idbBlobDir, "1")
self.ensureInvariantHolds(lambda _: os.path.exists(idbBlobPath))
foundRawValue = False
with open(idbBlobPath, "rb") as f_binary:
foundRawValue = (
re.search(self.IDBValue.encode("ascii"), f_binary.read()) is not None
)
self.assertFalse(foundRawValue, "Blob file did not get encrypted")
def test_ensure_encrpted_sqlite_data(self):
self.marionette.execute_script(
"""
const [idb, store, key, value] = arguments;
window.wrappedJSObject.addDataIntoIDB(idb, store, key, value);
""",
script_args=(self.IDBName, self.IDBStoreName, "textKey", self.IDBValue),
)
self.ensureInvariantHolds(lambda _: self.sqliteWALReleased())
self.ensureInvariantHolds(
lambda _: self.findDirObj(self.idbStoragePath, ".sqlite", True) is not None
)
sqliteDBFile = self.findDirObj(self.idbStoragePath, ".sqlite", True)
foundRawValue = False
with open(sqliteDBFile, "rb") as f_binary:
foundRawValue = (
re.search(self.IDBValue.encode("ascii"), f_binary.read()) is not None
)
self.assertFalse(foundRawValue, "sqlite data did not get encrypted")
def getIDBStoragePath(self):
origin = (
self.marionette.absolute_url("")[:-1].replace(":", "+").replace("/", "+")
)
# origin directory under storage is suffice'd with '^privateBrowsingId=1' for PBM
originDir = origin + "^privateBrowsingId=1"
return os.path.join(self.profilePath, "storage", "default", originDir, "idb")
def findDirObj(self, path, pattern, isFile):
for obj in os.scandir(path):
if obj.path.endswith(pattern) and (obj.is_file() == isFile):
return obj.path
return None
def sqliteWALReleased(self):
"""
checks if .sqlite-wal has been cleared or not.
returns False if idbStoragePath does not exist
"""
if not os.path.exists(self.idbStoragePath):
return False
return self.findDirObj(self.idbStoragePath, ".sqlite-wal", True) is None
def ensureInvariantHolds(self, op):
maxWaitTime = 60
Wait(self.marionette, timeout=maxWaitTime).until(
op,
message=f"operation did not yield success even after waiting {maxWaitTime} time",
)
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