sync: Introduce control data types

sync/engine/apply_control_data_updates_unittest.cc

Index: sync/engine/apply_control_data_updates_unittest.cc
diff --git a/sync/engine/apply_control_data_updates_unittest.cc b/sync/engine/apply_control_data_updates_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dbfc98d91cd5c4432e3ad026b42e223adcf9df3c
--- /dev/null
+++ b/sync/engine/apply_control_data_updates_unittest.cc
@@ -0,0 +1,347 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/format_macros.h"
+#include "base/location.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/stringprintf.h"
+#include "sync/engine/apply_control_data_updates.h"
+#include "sync/engine/syncer.h"
+#include "sync/engine/syncer_util.h"
+#include "sync/internal_api/public/test/test_entry_factory.h"
+#include "sync/protocol/nigori_specifics.pb.h"
+#include "sync/syncable/mutable_entry.h"
+#include "sync/syncable/nigori_util.h"
+#include "sync/syncable/read_transaction.h"
+#include "sync/syncable/syncable_util.h"
+#include "sync/syncable/write_transaction.h"
+#include "sync/test/engine/fake_model_worker.h"
+#include "sync/test/engine/syncer_command_test.h"
+#include "sync/test/engine/test_id_factory.h"
+#include "sync/test/fake_sync_encryption_handler.h"
+#include "sync/util/cryptographer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+
+using syncable::MutableEntry;
+using syncable::UNITTEST;
+using syncable::Id;
+
+class ApplyControlDataUpdatesTest : public SyncerCommandTest {
+ public:
+ protected:
+  ApplyControlDataUpdatesTest() {}
+  virtual ~ApplyControlDataUpdatesTest() {}
+
+  virtual void SetUp() {
+    workers()->clear();
+    mutable_routing_info()->clear();
+    workers()->push_back(make_scoped_refptr(new FakeModelWorker(GROUP_UI)));
+    workers()->push_back(
+        make_scoped_refptr(new FakeModelWorker(GROUP_PASSWORD)));
+    (*mutable_routing_info())[BOOKMARKS] = GROUP_UI;
+    (*mutable_routing_info())[PASSWORDS] = GROUP_PASSWORD;
+    (*mutable_routing_info())[NIGORI] = GROUP_PASSIVE;
+    SyncerCommandTest::SetUp();
+    entry_factory_.reset(new TestEntryFactory(directory()));
+
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+  }
+
+  TestIdFactory id_factory_;
+  scoped_ptr<TestEntryFactory> entry_factory_;
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ApplyControlDataUpdatesTest);
+};
+
+TEST_F(ApplyControlDataUpdatesTest, NigoriUpdate) {
+  // Storing the cryptographer separately is bad, but for this test we
+  // know it's safe.
+  Cryptographer* cryptographer;
+  ModelTypeSet encrypted_types;
+  encrypted_types.Put(PASSWORDS);
+
+  // We start with initial_sync_ended == false.  This is wrong, since would have
+  // no nigori node if that were the case.  Howerver, it makes it easier to
+  // verify that ApplyControlDataUpdates sets initial_sync_ended correctly.
+  EXPECT_FALSE(directory()->initial_sync_ended_types().Has(NIGORI));
+
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    cryptographer = directory()->GetCryptographer(&trans);
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(encrypted_types));
+  }
+
+  // Nigori node updates should update the Cryptographer.
+  Cryptographer other_cryptographer(cryptographer->encryptor());
+  KeyParams params = {"localhost", "dummy", "foobar"};
+  other_cryptographer.AddKey(params);
+
+  sync_pb::EntitySpecifics specifics;
+  sync_pb::NigoriSpecifics* nigori = specifics.mutable_nigori();
+  other_cryptographer.GetKeys(nigori->mutable_encrypted());
+  nigori->set_encrypt_everything(true);
+  entry_factory_->CreateUnappliedNewItem(
+      ModelTypeToRootTag(NIGORI), specifics, true);
+  EXPECT_FALSE(cryptographer->has_pending_keys());
+
+  ApplyControlDataUpdates(directory());
+
+  EXPECT_FALSE(cryptographer->is_ready());
+  EXPECT_TRUE(cryptographer->has_pending_keys());
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(ModelTypeSet::All()));
+    EXPECT_TRUE(directory()->initial_sync_ended_types().Has(NIGORI));
+  }
+}
+
+TEST_F(ApplyControlDataUpdatesTest, NigoriUpdateForDisabledTypes) {
+  // Storing the cryptographer separately is bad, but for this test we
+  // know it's safe.
+  Cryptographer* cryptographer;
+  ModelTypeSet encrypted_types;
+  encrypted_types.Put(PASSWORDS);
+
+  // We start with initial_sync_ended == false.  This is wrong, since would have
+  // no nigori node if that were the case.  Howerver, it makes it easier to
+  // verify that ApplyControlDataUpdates sets initial_sync_ended correctly.
+  EXPECT_FALSE(directory()->initial_sync_ended_types().Has(NIGORI));
+
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    cryptographer = directory()->GetCryptographer(&trans);
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(encrypted_types));
+  }
+
+  // Nigori node updates should update the Cryptographer.
+  Cryptographer other_cryptographer(cryptographer->encryptor());
+  KeyParams params = {"localhost", "dummy", "foobar"};
+  other_cryptographer.AddKey(params);
+
+  sync_pb::EntitySpecifics specifics;
+  sync_pb::NigoriSpecifics* nigori = specifics.mutable_nigori();
+  other_cryptographer.GetKeys(nigori->mutable_encrypted());
+  nigori->set_encrypt_everything(true);
+  entry_factory_->CreateUnappliedNewItem(
+      ModelTypeToRootTag(NIGORI), specifics, true);
+  EXPECT_FALSE(cryptographer->has_pending_keys());
+
+  ApplyControlDataUpdates(directory());
+
+  EXPECT_FALSE(cryptographer->is_ready());
+  EXPECT_TRUE(cryptographer->has_pending_keys());
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(ModelTypeSet::All()));
+    EXPECT_TRUE(directory()->initial_sync_ended_types().Has(NIGORI));
+  }
+}
+
+// Create some local unsynced and unencrypted data. Apply a nigori update that
+// turns on encryption for the unsynced data. Ensure we properly encrypt the
+// data as part of the nigori update. Apply another nigori update with no
+// changes. Ensure we ignore already-encrypted unsynced data and that nothing
+// breaks.
+TEST_F(ApplyControlDataUpdatesTest, EncryptUnsyncedChanges) {
+  // Storing the cryptographer separately is bad, but for this test we
+  // know it's safe.
+  Cryptographer* cryptographer;
+  ModelTypeSet encrypted_types;
+  encrypted_types.Put(PASSWORDS);
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    cryptographer = directory()->GetCryptographer(&trans);
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(encrypted_types));
+
+    // With default encrypted_types, this should be true.
+    EXPECT_TRUE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_TRUE(handles.empty());
+  }
+
+  // Create unsynced bookmarks without encryption.
+  // First item is a folder
+  Id folder_id = id_factory_.NewLocalId();
+  entry_factory_->CreateUnsyncedItem(folder_id, id_factory_.root(), "folder",
+                                     true, BOOKMARKS, NULL);
+  // Next five items are children of the folder
+  size_t i;
+  size_t batch_s = 5;
+  for (i = 0; i < batch_s; ++i) {
+    entry_factory_->CreateUnsyncedItem(id_factory_.NewLocalId(), folder_id,
+                                       base::StringPrintf("Item %"PRIuS"", i),
+                                       false, BOOKMARKS, NULL);
+  }
+  // Next five items are children of the root.
+  for (; i < 2*batch_s; ++i) {
+    entry_factory_->CreateUnsyncedItem(
+        id_factory_.NewLocalId(), id_factory_.root(),
+        base::StringPrintf("Item %"PRIuS"", i), false,
+        BOOKMARKS, NULL);
+  }
+
+  KeyParams params = {"localhost", "dummy", "foobar"};
+  cryptographer->AddKey(params);
+  sync_pb::EntitySpecifics specifics;
+  sync_pb::NigoriSpecifics* nigori = specifics.mutable_nigori();
+  cryptographer->GetKeys(nigori->mutable_encrypted());
+  nigori->set_encrypt_everything(true);
+  encrypted_types.Put(BOOKMARKS);
+  entry_factory_->CreateUnappliedNewItem(
+      ModelTypeToRootTag(NIGORI), specifics, true);
+  EXPECT_FALSE(cryptographer->has_pending_keys());
+  EXPECT_TRUE(cryptographer->is_ready());
+
+  {
+    // Ensure we have unsynced nodes that aren't properly encrypted.
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    EXPECT_FALSE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_EQ(2*batch_s+1, handles.size());
+  }
+
+  ApplyControlDataUpdates(directory());
+
+  EXPECT_FALSE(cryptographer->has_pending_keys());
+  EXPECT_TRUE(cryptographer->is_ready());
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+
+    // If ProcessUnsyncedChangesForEncryption worked, all our unsynced changes
+    // should be encrypted now.
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(ModelTypeSet::All()));
+    EXPECT_TRUE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_EQ(2*batch_s+1, handles.size());
+  }
+
+  // Simulate another nigori update that doesn't change anything.
+  {
+    syncable::WriteTransaction trans(FROM_HERE, UNITTEST, directory());
+    MutableEntry entry(&trans, syncable::GET_BY_SERVER_TAG,
+                       ModelTypeToRootTag(NIGORI));
+    ASSERT_TRUE(entry.good());
+    entry.Put(syncable::SERVER_VERSION, entry_factory_->GetNextRevision());
+    entry.Put(syncable::IS_UNAPPLIED_UPDATE, true);
+  }
+
+  ApplyControlDataUpdates(directory());
+
+  EXPECT_FALSE(cryptographer->has_pending_keys());
+  EXPECT_TRUE(cryptographer->is_ready());
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+
+    // All our changes should still be encrypted.
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(ModelTypeSet::All()));
+    EXPECT_TRUE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_EQ(2*batch_s+1, handles.size());
+  }
+}
+
+TEST_F(ApplyControlDataUpdatesTest, CannotEncryptUnsyncedChanges) {
+  // Storing the cryptographer separately is bad, but for this test we
+  // know it's safe.
+  Cryptographer* cryptographer;
+  ModelTypeSet encrypted_types;
+  encrypted_types.Put(PASSWORDS);
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    cryptographer = directory()->GetCryptographer(&trans);
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(encrypted_types));
+
+    // With default encrypted_types, this should be true.
+    EXPECT_TRUE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_TRUE(handles.empty());
+  }
+
+  // Create unsynced bookmarks without encryption.
+  // First item is a folder
+  Id folder_id = id_factory_.NewLocalId();
+  entry_factory_->CreateUnsyncedItem(
+      folder_id, id_factory_.root(), "folder", true,
+      BOOKMARKS, NULL);
+  // Next five items are children of the folder
+  size_t i;
+  size_t batch_s = 5;
+  for (i = 0; i < batch_s; ++i) {
+    entry_factory_->CreateUnsyncedItem(id_factory_.NewLocalId(), folder_id,
+                                       base::StringPrintf("Item %"PRIuS"", i),
+                                       false, BOOKMARKS, NULL);
+  }
+  // Next five items are children of the root.
+  for (; i < 2*batch_s; ++i) {
+    entry_factory_->CreateUnsyncedItem(
+        id_factory_.NewLocalId(), id_factory_.root(),
+        base::StringPrintf("Item %"PRIuS"", i), false,
+        BOOKMARKS, NULL);
+  }
+
+  // We encrypt with new keys, triggering the local cryptographer to be unready
+  // and unable to decrypt data (once updated).
+  Cryptographer other_cryptographer(cryptographer->encryptor());
+  KeyParams params = {"localhost", "dummy", "foobar"};
+  other_cryptographer.AddKey(params);
+  sync_pb::EntitySpecifics specifics;
+  sync_pb::NigoriSpecifics* nigori = specifics.mutable_nigori();
+  other_cryptographer.GetKeys(nigori->mutable_encrypted());
+  nigori->set_encrypt_everything(true);
+  encrypted_types.Put(BOOKMARKS);
+  entry_factory_->CreateUnappliedNewItem(
+      ModelTypeToRootTag(NIGORI), specifics, true);
+  EXPECT_FALSE(cryptographer->has_pending_keys());
+
+  {
+    // Ensure we have unsynced nodes that aren't properly encrypted.
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+    EXPECT_FALSE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_EQ(2*batch_s+1, handles.size());
+  }
+
+  ApplyControlDataUpdates(directory());
+
+  EXPECT_FALSE(cryptographer->is_ready());
+  EXPECT_TRUE(cryptographer->has_pending_keys());
+  {
+    syncable::ReadTransaction trans(FROM_HERE, directory());
+
+    // Since we have pending keys, we would have failed to encrypt, but the
+    // cryptographer should be updated.
+    EXPECT_FALSE(VerifyUnsyncedChangesAreEncrypted(&trans, encrypted_types));
+    EXPECT_TRUE(directory()->GetNigoriHandler()->GetEncryptedTypes(&trans)
+        .Equals(ModelTypeSet::All()));
+    EXPECT_FALSE(cryptographer->is_ready());
+    EXPECT_TRUE(cryptographer->has_pending_keys());
+
+    Syncer::UnsyncedMetaHandles handles;
+    GetUnsyncedEntries(&trans, &handles);
+    EXPECT_EQ(2*batch_s+1, handles.size());
+  }
+}
+
+}  // namespace syncer