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| 1 // Copyright 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Various utility methods for nigori-based multi-type encryption. | |
| 6 | |
| 7 #ifndef SYNC_SYNCABLE_NIGORI_UTIL_H_ | |
| 8 #define SYNC_SYNCABLE_NIGORI_UTIL_H_ | |
| 9 | |
| 10 #include "base/compiler_specific.h" | |
| 11 #include "sync/base/sync_export.h" | |
| 12 #include "sync/internal_api/public/base/model_type.h" | |
| 13 #include "sync/protocol/nigori_specifics.pb.h" | |
| 14 | |
| 15 namespace sync_pb { | |
| 16 class EntitySpecifics; | |
| 17 } | |
| 18 | |
| 19 namespace syncer { | |
| 20 class Cryptographer; | |
| 21 | |
| 22 namespace syncable { | |
| 23 | |
| 24 const char kEncryptedString[] = "encrypted"; | |
| 25 | |
| 26 class BaseTransaction; | |
| 27 class Entry; | |
| 28 class MutableEntry; | |
| 29 class WriteTransaction; | |
| 30 | |
| 31 // Check if our unsyced changes are encrypted if they need to be based on | |
| 32 // |encrypted_types|. | |
| 33 // Returns: true if all unsynced data that should be encrypted is. | |
| 34 // false if some unsynced changes need to be encrypted. | |
| 35 // This method is similar to ProcessUnsyncedChangesForEncryption but does not | |
| 36 // modify the data and does not care if data is unnecessarily encrypted. | |
| 37 SYNC_EXPORT bool VerifyUnsyncedChangesAreEncrypted( | |
| 38 BaseTransaction* const trans, | |
| 39 ModelTypeSet encrypted_types); | |
| 40 | |
| 41 // Processes all unsynced changes and ensures they are appropriately encrypted | |
| 42 // or unencrypted, based on |encrypted_types|. | |
| 43 bool ProcessUnsyncedChangesForEncryption( | |
| 44 WriteTransaction* const trans); | |
| 45 | |
| 46 // Returns true if the entry requires encryption but is not encrypted, false | |
| 47 // otherwise. Note: this does not check that already encrypted entries are | |
| 48 // encrypted with the proper key. | |
| 49 bool EntryNeedsEncryption(ModelTypeSet encrypted_types, | |
| 50 const Entry& entry); | |
| 51 | |
| 52 // Same as EntryNeedsEncryption, but looks at specifics. | |
| 53 SYNC_EXPORT bool SpecificsNeedsEncryption( | |
| 54 ModelTypeSet encrypted_types, | |
| 55 const sync_pb::EntitySpecifics& specifics); | |
| 56 | |
| 57 // Verifies all data of type |type| is encrypted appropriately. | |
| 58 SYNC_EXPORT bool VerifyDataTypeEncryptionForTest(BaseTransaction* const trans, | |
| 59 ModelType type, | |
| 60 bool is_encrypted) | |
| 61 WARN_UNUSED_RESULT; | |
| 62 | |
| 63 // Stores |new_specifics| into |entry|, encrypting if necessary. | |
| 64 // Returns false if an error encrypting occurred (does not modify |entry|). | |
| 65 // Note: gracefully handles new_specifics aliasing with entry->GetSpecifics(). | |
| 66 bool UpdateEntryWithEncryption( | |
| 67 BaseTransaction* const trans, | |
| 68 const sync_pb::EntitySpecifics& new_specifics, | |
| 69 MutableEntry* entry); | |
| 70 | |
| 71 // Updates |nigori| to match the encryption state specified by |encrypted_types| | |
| 72 // and |encrypt_everything|. | |
| 73 SYNC_EXPORT void UpdateNigoriFromEncryptedTypes( | |
| 74 ModelTypeSet encrypted_types, | |
| 75 bool encrypt_everything, | |
| 76 sync_pb::NigoriSpecifics* nigori); | |
| 77 | |
| 78 // Extracts the set of encrypted types from a nigori node. | |
| 79 ModelTypeSet GetEncryptedTypesFromNigori( | |
| 80 const sync_pb::NigoriSpecifics& nigori); | |
| 81 | |
| 82 } // namespace syncable | |
| 83 } // namespace syncer | |
| 84 | |
| 85 #endif // SYNC_SYNCABLE_NIGORI_UTIL_H_ | |
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Chromium Code Reviews
Issue 2130453004:
[Sync] Move //sync to //components/sync. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master