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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 "chrome/browser/chromeos/policy/cloud_external_data_store.h" | 5 #include "chrome/browser/chromeos/policy/cloud_external_data_store.h" |
| 6 | 6 |
| 7 #include <set> | 7 #include <set> |
| 8 | 8 |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/sequenced_task_runner.h" | 10 #include "base/sequenced_task_runner.h" |
| (...skipping 19 matching lines...) Expand all Loading... |
| 30 CloudExternalDataStore::CloudExternalDataStore( | 30 CloudExternalDataStore::CloudExternalDataStore( |
| 31 const std::string& cache_key, | 31 const std::string& cache_key, |
| 32 scoped_refptr<base::SequencedTaskRunner> task_runner, | 32 scoped_refptr<base::SequencedTaskRunner> task_runner, |
| 33 ResourceCache* cache) | 33 ResourceCache* cache) |
| 34 : cache_key_(cache_key), | 34 : cache_key_(cache_key), |
| 35 task_runner_(task_runner), | 35 task_runner_(task_runner), |
| 36 cache_(cache) { | 36 cache_(cache) { |
| 37 } | 37 } |
| 38 | 38 |
| 39 CloudExternalDataStore::~CloudExternalDataStore() { | 39 CloudExternalDataStore::~CloudExternalDataStore() { |
| 40 DCHECK(task_runner_->RunsTasksOnCurrentThread()); | 40 DCHECK(task_runner_->RunsTasksInCurrentSequence()); |
| 41 } | 41 } |
| 42 | 42 |
| 43 void CloudExternalDataStore::Prune( | 43 void CloudExternalDataStore::Prune( |
| 44 const CloudExternalDataManager::Metadata& metadata) { | 44 const CloudExternalDataManager::Metadata& metadata) { |
| 45 DCHECK(task_runner_->RunsTasksOnCurrentThread()); | 45 DCHECK(task_runner_->RunsTasksInCurrentSequence()); |
| 46 std::set<std::string> subkeys_to_keep; | 46 std::set<std::string> subkeys_to_keep; |
| 47 for (CloudExternalDataManager::Metadata::const_iterator it = metadata.begin(); | 47 for (CloudExternalDataManager::Metadata::const_iterator it = metadata.begin(); |
| 48 it != metadata.end(); ++it) { | 48 it != metadata.end(); ++it) { |
| 49 subkeys_to_keep.insert(GetSubkey(it->first, it->second.hash)); | 49 subkeys_to_keep.insert(GetSubkey(it->first, it->second.hash)); |
| 50 } | 50 } |
| 51 cache_->PurgeOtherSubkeys(cache_key_, subkeys_to_keep); | 51 cache_->PurgeOtherSubkeys(cache_key_, subkeys_to_keep); |
| 52 } | 52 } |
| 53 | 53 |
| 54 bool CloudExternalDataStore::Store(const std::string& policy, | 54 bool CloudExternalDataStore::Store(const std::string& policy, |
| 55 const std::string& hash, | 55 const std::string& hash, |
| 56 const std::string& data) { | 56 const std::string& data) { |
| 57 DCHECK(task_runner_->RunsTasksOnCurrentThread()); | 57 DCHECK(task_runner_->RunsTasksInCurrentSequence()); |
| 58 return cache_->Store(cache_key_, GetSubkey(policy, hash), data); | 58 return cache_->Store(cache_key_, GetSubkey(policy, hash), data); |
| 59 } | 59 } |
| 60 | 60 |
| 61 bool CloudExternalDataStore::Load(const std::string& policy, | 61 bool CloudExternalDataStore::Load(const std::string& policy, |
| 62 const std::string& hash, | 62 const std::string& hash, |
| 63 size_t max_size, | 63 size_t max_size, |
| 64 std::string* data) { | 64 std::string* data) { |
| 65 DCHECK(task_runner_->RunsTasksOnCurrentThread()); | 65 DCHECK(task_runner_->RunsTasksInCurrentSequence()); |
| 66 const std::string subkey = GetSubkey(policy, hash); | 66 const std::string subkey = GetSubkey(policy, hash); |
| 67 if (cache_->Load(cache_key_, subkey, data)) { | 67 if (cache_->Load(cache_key_, subkey, data)) { |
| 68 if (data->size() <= max_size && crypto::SHA256HashString(*data) == hash) | 68 if (data->size() <= max_size && crypto::SHA256HashString(*data) == hash) |
| 69 return true; | 69 return true; |
| 70 // If the data is larger than allowed or does not match the expected hash, | 70 // If the data is larger than allowed or does not match the expected hash, |
| 71 // delete the entry. | 71 // delete the entry. |
| 72 cache_->Delete(cache_key_, subkey); | 72 cache_->Delete(cache_key_, subkey); |
| 73 data->clear(); | 73 data->clear(); |
| 74 } | 74 } |
| 75 return false; | 75 return false; |
| 76 } | 76 } |
| 77 | 77 |
| 78 } // namespace policy | 78 } // namespace policy |
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