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