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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 #ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_LOADER_H_ | 5 #ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_ |
| 6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_LOADER_H_ | 6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include "chrome/browser/extensions/external_extension_loader.h" | 9 #include "chrome/browser/extensions/external_loader.h" |
| 10 | 10 |
| 11 #include <string> | 11 #include <string> |
| 12 | 12 |
| 13 #include "base/compiler_specific.h" | 13 #include "base/compiler_specific.h" |
| 14 #include "base/memory/scoped_ptr.h" | 14 #include "base/memory/scoped_ptr.h" |
| 15 #include "base/values.h" | 15 #include "base/values.h" |
| 16 | 16 |
| 17 // A specialization of the ExternalExtensionLoader that uses a json file to | 17 namespace extensions { |
| 18 |
| 19 // A specialization of the ExternalLoader that uses a json file to |
| 18 // look up which external extensions are registered. | 20 // look up which external extensions are registered. |
| 19 // Instances of this class are expected to be created and destroyed on the UI | 21 // Instances of this class are expected to be created and destroyed on the UI |
| 20 // thread and they are expecting public method calls from the UI thread. | 22 // thread and they are expecting public method calls from the UI thread. |
| 21 class ExternalPrefExtensionLoader : public ExternalExtensionLoader { | 23 class ExternalPrefLoader : public ExternalLoader { |
| 22 public: | 24 public: |
| 23 enum Options { | 25 enum Options { |
| 24 NONE = 0, | 26 NONE = 0, |
| 25 | 27 |
| 26 // Ensure that only root can force an external install by checking | 28 // Ensure that only root can force an external install by checking |
| 27 // that all components of the path to external extensions files are | 29 // that all components of the path to external extensions files are |
| 28 // owned by root and not writable by any non-root user. | 30 // owned by root and not writable by any non-root user. |
| 29 ENSURE_PATH_CONTROLLED_BY_ADMIN = 1 << 0 | 31 ENSURE_PATH_CONTROLLED_BY_ADMIN = 1 << 0 |
| 30 }; | 32 }; |
| 31 | 33 |
| 32 // |base_path_id| is the directory containing the external_extensions.json | 34 // |base_path_id| is the directory containing the external_extensions.json |
| 33 // file or the standalone extension manifest files. Relative file paths to | 35 // file or the standalone extension manifest files. Relative file paths to |
| 34 // extension files are resolved relative to this path. | 36 // extension files are resolved relative to this path. |
| 35 explicit ExternalPrefExtensionLoader(int base_path_id, Options options); | 37 explicit ExternalPrefLoader(int base_path_id, Options options); |
| 36 | 38 |
| 37 virtual const FilePath GetBaseCrxFilePath() OVERRIDE; | 39 virtual const FilePath GetBaseCrxFilePath() OVERRIDE; |
| 38 | 40 |
| 39 protected: | 41 protected: |
| 40 virtual void StartLoading() OVERRIDE; | 42 virtual void StartLoading() OVERRIDE; |
| 41 bool IsOptionSet(Options option) { | 43 bool IsOptionSet(Options option) { |
| 42 return (options_ & option) != 0; | 44 return (options_ & option) != 0; |
| 43 } | 45 } |
| 44 | 46 |
| 45 private: | 47 private: |
| 46 friend class base::RefCountedThreadSafe<ExternalExtensionLoader>; | 48 friend class base::RefCountedThreadSafe<ExternalLoader>; |
| 47 | 49 |
| 48 virtual ~ExternalPrefExtensionLoader() {} | 50 virtual ~ExternalPrefLoader() {} |
| 49 | 51 |
| 50 // Actually searches for and loads candidate standalone extension preference | 52 // Actually searches for and loads candidate standalone extension preference |
| 51 // files in the path corresponding to |base_path_id|. | 53 // files in the path corresponding to |base_path_id|. |
| 52 // Must be called on the file thread. | 54 // Must be called on the file thread. |
| 53 void LoadOnFileThread(); | 55 void LoadOnFileThread(); |
| 54 | 56 |
| 55 // Extracts the information contained in an external_extension.json file | 57 // Extracts the information contained in an external_extension.json file |
| 56 // regarding which extensions to install. |prefs| will be modified to | 58 // regarding which extensions to install. |prefs| will be modified to |
| 57 // receive the extracted extension information. | 59 // receive the extracted extension information. |
| 58 // Must be called from the File thread. | 60 // Must be called from the File thread. |
| 59 void ReadExternalExtensionPrefFile(DictionaryValue * prefs); | 61 void ReadExternalExtensionPrefFile(DictionaryValue * prefs); |
| 60 | 62 |
| 61 // Extracts the information contained in standalone external extension | 63 // Extracts the information contained in standalone external extension |
| 62 // json files (<extension id>.json) regarding what external extensions | 64 // json files (<extension id>.json) regarding what external extensions |
| 63 // to install. |prefs| will be modified to receive the extracted extension | 65 // to install. |prefs| will be modified to receive the extracted extension |
| 64 // information. | 66 // information. |
| 65 // Must be called from the File thread. | 67 // Must be called from the File thread. |
| 66 void ReadStandaloneExtensionPrefFiles(DictionaryValue * prefs); | 68 void ReadStandaloneExtensionPrefFiles(DictionaryValue * prefs); |
| 67 | 69 |
| 68 // The resource id of the base path with the information about the json | 70 // The resource id of the base path with the information about the json |
| 69 // file containing which extensions to load. | 71 // file containing which extensions to load. |
| 70 int base_path_id_; | 72 int base_path_id_; |
| 71 | 73 |
| 72 Options options_; | 74 Options options_; |
| 73 | 75 |
| 74 // The path (coresponding to |base_path_id_| containing the json files | 76 // The path (coresponding to |base_path_id_| containing the json files |
| 75 // describing which extensions to load. | 77 // describing which extensions to load. |
| 76 FilePath base_path_; | 78 FilePath base_path_; |
| 77 | 79 |
| 78 DISALLOW_COPY_AND_ASSIGN(ExternalPrefExtensionLoader); | 80 DISALLOW_COPY_AND_ASSIGN(ExternalPrefLoader); |
| 79 }; | 81 }; |
| 80 | 82 |
| 81 // A simplified version of ExternalPrefExtensionLoader that loads the dictionary | 83 // A simplified version of ExternalPrefLoader that loads the dictionary |
| 82 // from json data specified in a string. | 84 // from json data specified in a string. |
| 83 class ExternalTestingExtensionLoader : public ExternalExtensionLoader { | 85 class ExternalTestingLoader : public ExternalLoader { |
| 84 public: | 86 public: |
| 85 ExternalTestingExtensionLoader( | 87 ExternalTestingLoader(const std::string& json_data, |
| 86 const std::string& json_data, | 88 const FilePath& fake_base_path); |
| 87 const FilePath& fake_base_path); | |
| 88 | 89 |
| 89 virtual const FilePath GetBaseCrxFilePath() OVERRIDE; | 90 virtual const FilePath GetBaseCrxFilePath() OVERRIDE; |
| 90 | 91 |
| 91 protected: | 92 protected: |
| 92 virtual void StartLoading() OVERRIDE; | 93 virtual void StartLoading() OVERRIDE; |
| 93 | 94 |
| 94 private: | 95 private: |
| 95 friend class base::RefCountedThreadSafe<ExternalExtensionLoader>; | 96 friend class base::RefCountedThreadSafe<ExternalLoader>; |
| 96 | 97 |
| 97 virtual ~ExternalTestingExtensionLoader(); | 98 virtual ~ExternalTestingLoader(); |
| 98 | 99 |
| 99 FilePath fake_base_path_; | 100 FilePath fake_base_path_; |
| 100 scoped_ptr<DictionaryValue> testing_prefs_; | 101 scoped_ptr<DictionaryValue> testing_prefs_; |
| 101 | 102 |
| 102 DISALLOW_COPY_AND_ASSIGN(ExternalTestingExtensionLoader); | 103 DISALLOW_COPY_AND_ASSIGN(ExternalTestingLoader); |
| 103 }; | 104 }; |
| 104 | 105 |
| 105 #endif // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_EXTENSION_LOADER_H_ | 106 } // namespace extensions |
| 107 |
| 108 #endif // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PREF_LOADER_H_ |
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