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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_ZIP_FILE_CREATOR_H_ | |
6 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_ZIP_FILE_CREATOR_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/files/file_path.h" | |
11 #include "base/memory/ref_counted.h" | |
12 #include "base/platform_file.h" | |
13 #include "chrome/common/extensions/extension.h" | |
14 #include "content/public/browser/browser_thread.h" | |
15 #include "content/public/browser/utility_process_host_client.h" | |
16 | |
17 namespace file_manager { | |
18 | |
19 // ZipFileCreator creates a ZIP file from a specified list of files and | |
20 // directories under a common parent directory. This is done in a sandboxed | |
21 // subprocess to protect the browser process from handling arbitrary input data | |
22 // from untrusted sources. | |
23 // | |
24 // Lifetime management: | |
25 // | |
26 // This class is ref-counted by each call it makes to itself on another thread, | |
27 // and by UtilityProcessHost. | |
28 // | |
29 // Additionally, we hold a reference to our own client so that it lives at least | |
30 // long enough to receive the result of zip file creation. | |
31 class ZipFileCreator : public content::UtilityProcessHostClient { | |
32 public: | |
33 class Observer { | |
34 public: | |
35 virtual void OnZipDone(bool success) = 0; | |
36 | |
37 protected: | |
38 virtual ~Observer() {} | |
39 }; | |
40 | |
41 // Creates a zip file from the specified list of files and directories. | |
42 ZipFileCreator(Observer* observer, | |
43 const base::FilePath& src_dir, | |
44 const std::vector<base::FilePath>& src_relative_paths, | |
45 const base::FilePath& dest_file); | |
46 | |
47 // Start creating the zip file. The client is called with the results. | |
48 void Start(); | |
49 | |
50 private: | |
51 friend class ProcessHostClient; | |
52 | |
53 virtual ~ZipFileCreator(); | |
54 | |
55 // Opens a handle for the zip file, and proceeds to StartProcessOnIOThread. | |
56 void OpenFileHandleOnBlockingThreadPool(); | |
57 | |
58 // Starts the utility process that creates the zip file. | |
59 void StartProcessOnIOThread(base::PlatformFile dest_file); | |
60 | |
61 // UtilityProcessHostClient | |
62 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; | |
63 virtual void OnProcessCrashed(int exit_code) OVERRIDE; | |
64 | |
65 // IPC message handlers. | |
66 void OnCreateZipFileSucceeded(); | |
67 void OnCreateZipFileFailed(); | |
68 | |
69 void ReportDone(bool success); | |
70 | |
71 // The observer's thread. This is the thread we respond on. | |
72 content::BrowserThread::ID thread_identifier_; | |
73 | |
74 // The observer. | |
75 Observer* observer_; | |
76 | |
77 // The source directory for input files. | |
78 base::FilePath src_dir_; | |
79 | |
80 // The list of source files paths to be included in the zip file. | |
81 // Entries are relative paths under directory |src_dir_|. | |
82 std::vector<base::FilePath> src_relative_paths_; | |
83 | |
84 // The output zip file. | |
85 base::FilePath dest_file_; | |
86 | |
87 // Whether we've received a response from the utility process yet. | |
88 bool got_response_; | |
89 }; | |
90 | |
91 } // namespace file_manager | |
92 | |
93 #endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_ZIP_FILE_CREATOR_H_ | |
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