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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" |
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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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