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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 #include "sync/engine/process_updates_command.h" | 5 #include "sync/engine/process_updates_command.h" | 
| 6 | 6 | 
| 7 #include <vector> | 7 #include <vector> | 
| 8 | 8 | 
| 9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" | 
| 10 #include "base/location.h" | 10 #include "base/location.h" | 
| 11 #include "sync/engine/syncer.h" | 11 #include "sync/engine/syncer.h" | 
| 12 #include "sync/engine/syncer_proto_util.h" | 12 #include "sync/engine/syncer_proto_util.h" | 
| 13 #include "sync/engine/syncer_util.h" | 13 #include "sync/engine/syncer_util.h" | 
| 14 #include "sync/engine/syncproto.h" | |
| 15 #include "sync/sessions/sync_session.h" | 14 #include "sync/sessions/sync_session.h" | 
| 16 #include "sync/syncable/directory.h" | 15 #include "sync/syncable/directory.h" | 
| 17 #include "sync/syncable/mutable_entry.h" | 16 #include "sync/syncable/mutable_entry.h" | 
| 17 #include "sync/syncable/syncable_proto_util.h" | |
| 18 #include "sync/syncable/syncable_util.h" | 18 #include "sync/syncable/syncable_util.h" | 
| 19 #include "sync/syncable/write_transaction.h" | 19 #include "sync/syncable/write_transaction.h" | 
| 20 #include "sync/util/cryptographer.h" | 20 #include "sync/util/cryptographer.h" | 
| 21 | 21 | 
| 22 using std::vector; | 22 using std::vector; | 
| 23 | 23 | 
| 24 namespace syncer { | 24 namespace syncer { | 
| 25 | 25 | 
| 26 using sessions::SyncSession; | 26 using sessions::SyncSession; | 
| 27 using sessions::StatusController; | 27 using sessions::StatusController; | 
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| 65 } | 65 } | 
| 66 } | 66 } | 
| 67 | 67 | 
| 68 StatusController* status = session->mutable_status_controller(); | 68 StatusController* status = session->mutable_status_controller(); | 
| 69 status->mutable_update_progress()->ClearVerifiedUpdates(); | 69 status->mutable_update_progress()->ClearVerifiedUpdates(); | 
| 70 return SYNCER_OK; | 70 return SYNCER_OK; | 
| 71 } | 71 } | 
| 72 | 72 | 
| 73 namespace { | 73 namespace { | 
| 74 // Returns true if the entry is still ok to process. | 74 // Returns true if the entry is still ok to process. | 
| 75 bool ReverifyEntry(syncable::WriteTransaction* trans, const SyncEntity& entry, | 75 bool ReverifyEntry(syncable::WriteTransaction* trans, | 
| 76 const sync_pb::SyncEntity& entry, | |
| 76 syncable::MutableEntry* same_id) { | 77 syncable::MutableEntry* same_id) { | 
| 77 | 78 | 
| 78 const bool deleted = entry.has_deleted() && entry.deleted(); | 79 const bool deleted = entry.has_deleted() && entry.deleted(); | 
| 79 const bool is_directory = entry.IsFolder(); | 80 const bool is_directory = IsFolder(entry); | 
| 80 const syncer::ModelType model_type = entry.GetModelType(); | 81 const syncer::ModelType model_type = GetModelType(entry); | 
| 81 | 82 | 
| 82 return VERIFY_SUCCESS == VerifyUpdateConsistency(trans, | 83 return VERIFY_SUCCESS == VerifyUpdateConsistency(trans, | 
| 83 entry, | 84 entry, | 
| 84 same_id, | 85 same_id, | 
| 85 deleted, | 86 deleted, | 
| 86 is_directory, | 87 is_directory, | 
| 87 model_type); | 88 model_type); | 
| 88 } | 89 } | 
| 89 } // namespace | 90 } // namespace | 
| 90 | 91 | 
| 91 // Process a single update. Will avoid touching global state. | 92 // Process a single update. Will avoid touching global state. | 
| 92 ServerUpdateProcessingResult ProcessUpdatesCommand::ProcessUpdate( | 93 ServerUpdateProcessingResult ProcessUpdatesCommand::ProcessUpdate( | 
| 93 const sync_pb::SyncEntity& proto_update, | 94 const sync_pb::SyncEntity& proto_update, | 
| 94 const Cryptographer* cryptographer, | 95 const Cryptographer* cryptographer, | 
| 95 syncable::WriteTransaction* const trans) { | 96 syncable::WriteTransaction* const trans) { | 
| 96 | 97 | 
| 97 const SyncEntity& update = *static_cast<const SyncEntity*>(&proto_update); | 98 const sync_pb::SyncEntity& update = | 
| 98 syncable::Id server_id = update.id(); | 99 *static_cast<const sync_pb::SyncEntity*>(&proto_update); | 
| 
akalin
2012/07/11 01:42:22
static cast
 
rlarocque
2012/07/11 19:22:16
Done.
 | |
| 100 syncable::Id server_id = SyncableIdFromProto(update.id_string()); | |
| 99 const std::string name = SyncerProtoUtil::NameFromSyncEntity(update); | 101 const std::string name = SyncerProtoUtil::NameFromSyncEntity(update); | 
| 100 | 102 | 
| 101 // Look to see if there's a local item that should recieve this update, | 103 // Look to see if there's a local item that should recieve this update, | 
| 102 // maybe due to a duplicate client tag or a lost commit response. | 104 // maybe due to a duplicate client tag or a lost commit response. | 
| 103 syncable::Id local_id = FindLocalIdToUpdate(trans, update); | 105 syncable::Id local_id = FindLocalIdToUpdate(trans, update); | 
| 104 | 106 | 
| 105 // FindLocalEntryToUpdate has veto power. | 107 // FindLocalEntryToUpdate has veto power. | 
| 106 if (local_id.IsNull()) { | 108 if (local_id.IsNull()) { | 
| 107 return SUCCESS_PROCESSED; // The entry has become irrelevant. | 109 return SUCCESS_PROCESSED; // The entry has become irrelevant. | 
| 108 } | 110 } | 
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| 143 // Force application of this update, no matter what. | 145 // Force application of this update, no matter what. | 
| 144 target_entry.Put(syncable::IS_UNAPPLIED_UPDATE, true); | 146 target_entry.Put(syncable::IS_UNAPPLIED_UPDATE, true); | 
| 145 } | 147 } | 
| 146 | 148 | 
| 147 // If this is a newly received undecryptable update, and the only thing that | 149 // If this is a newly received undecryptable update, and the only thing that | 
| 148 // has changed are the specifics, store the original decryptable specifics, | 150 // has changed are the specifics, store the original decryptable specifics, | 
| 149 // (on which any current or future local changes are based) before we | 151 // (on which any current or future local changes are based) before we | 
| 150 // overwrite SERVER_SPECIFICS. | 152 // overwrite SERVER_SPECIFICS. | 
| 151 // MTIME, CTIME, and NON_UNIQUE_NAME are not enforced. | 153 // MTIME, CTIME, and NON_UNIQUE_NAME are not enforced. | 
| 152 if (!update.deleted() && !target_entry.Get(syncable::SERVER_IS_DEL) && | 154 if (!update.deleted() && !target_entry.Get(syncable::SERVER_IS_DEL) && | 
| 153 (update.parent_id() == target_entry.Get(syncable::SERVER_PARENT_ID)) && | 155 (SyncableIdFromProto(update.parent_id_string()) == | 
| 156 target_entry.Get(syncable::SERVER_PARENT_ID)) && | |
| 154 (update.position_in_parent() == | 157 (update.position_in_parent() == | 
| 155 target_entry.Get(syncable::SERVER_POSITION_IN_PARENT)) && | 158 target_entry.Get(syncable::SERVER_POSITION_IN_PARENT)) && | 
| 156 update.has_specifics() && update.specifics().has_encrypted() && | 159 update.has_specifics() && update.specifics().has_encrypted() && | 
| 157 !cryptographer->CanDecrypt(update.specifics().encrypted())) { | 160 !cryptographer->CanDecrypt(update.specifics().encrypted())) { | 
| 158 sync_pb::EntitySpecifics prev_specifics = | 161 sync_pb::EntitySpecifics prev_specifics = | 
| 159 target_entry.Get(syncable::SERVER_SPECIFICS); | 162 target_entry.Get(syncable::SERVER_SPECIFICS); | 
| 160 // We only store the old specifics if they were decryptable and applied and | 163 // We only store the old specifics if they were decryptable and applied and | 
| 161 // there is no BASE_SERVER_SPECIFICS already. Else do nothing. | 164 // there is no BASE_SERVER_SPECIFICS already. Else do nothing. | 
| 162 if (!target_entry.Get(syncable::IS_UNAPPLIED_UPDATE) && | 165 if (!target_entry.Get(syncable::IS_UNAPPLIED_UPDATE) && | 
| 163 !syncer::IsRealDataType(syncer::GetModelTypeFromSpecifics( | 166 !syncer::IsRealDataType(syncer::GetModelTypeFromSpecifics( | 
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| 176 target_entry.Put(syncable::BASE_SERVER_SPECIFICS, | 179 target_entry.Put(syncable::BASE_SERVER_SPECIFICS, | 
| 177 sync_pb::EntitySpecifics()); | 180 sync_pb::EntitySpecifics()); | 
| 178 } | 181 } | 
| 179 | 182 | 
| 180 UpdateServerFieldsFromUpdate(&target_entry, update, name); | 183 UpdateServerFieldsFromUpdate(&target_entry, update, name); | 
| 181 | 184 | 
| 182 return SUCCESS_PROCESSED; | 185 return SUCCESS_PROCESSED; | 
| 183 } | 186 } | 
| 184 | 187 | 
| 185 } // namespace syncer | 188 } // namespace syncer | 
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