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Side by Side Diff: webkit/browser/chromeos/fileapi/cros_mount_point_provider.h

Issue 17644006: Move files under webkit/browser/fileapi/... to chrome/browser/chromeos/fileapi/... (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: address review comments. Created 7 years, 5 months ago
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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 WEBKIT_BROWSER_CHROMEOS_FILEAPI_CROS_MOUNT_POINT_PROVIDER_H_
6 #define WEBKIT_BROWSER_CHROMEOS_FILEAPI_CROS_MOUNT_POINT_PROVIDER_H_
7
8 #include <map>
9 #include <string>
10 #include <vector>
11
12 #include "base/compiler_specific.h"
13 #include "base/files/file_path.h"
14 #include "base/memory/scoped_ptr.h"
15 #include "base/synchronization/lock.h"
16 #include "webkit/browser/fileapi/file_system_mount_point_provider.h"
17 #include "webkit/browser/quota/special_storage_policy.h"
18 #include "webkit/browser/webkit_storage_browser_export.h"
19 #include "webkit/common/fileapi/file_system_types.h"
20
21 namespace fileapi {
22 class AsyncFileUtilAdapter;
23 class CopyOrMoveFileValidatorFactory;
24 class ExternalMountPoints;
25 class FileSystemFileUtil;
26 class FileSystemURL;
27 class IsolatedContext;
28 }
29
30 namespace chromeos {
31
32 class FileAccessPermissions;
33
34 // CrosMountPointProvider is a Chrome OS specific implementation of
35 // ExternalFileSystemMountPointProvider. This class is responsible for a
36 // number of things, including:
37 //
38 // - Add system mount points
39 // - Grant/revoke/check file access permissions
40 // - Create FileSystemOperation per file system type
41 // - Create FileStreamReader/Writer per file system type
42 //
43 // Chrome OS specific mount points:
44 //
45 // "Downloads" is a mount point for user's Downloads directory on the local
46 // disk, where downloaded files are stored by default.
47 //
48 // "archive" is a mount point for an archive file, such as a zip file. This
49 // mount point exposes contents of an archive file via cros_disks and AVFS
50 // <http://avf.sourceforge.net/>.
51 //
52 // "removable" is a mount point for removable media such as an SD card.
53 // Insertion and removal of removable media are handled by cros_disks.
54 //
55 // "oem" is a read-only mount point for a directory containing OEM data.
56 //
57 // "drive" is a mount point for Google Drive. Drive is integrated with the
58 // FileSystem API layer via drive::FileSystemProxy. This mount point is added
59 // by drive::DriveIntegrationService.
60 //
61 // These mount points are placed under the "external" namespace, and file
62 // system URLs for these mount points look like:
63 //
64 // filesystem:<origin>/external/<mount_name>/...
65 //
66 class WEBKIT_STORAGE_BROWSER_EXPORT CrosMountPointProvider
67 : public fileapi::ExternalFileSystemMountPointProvider {
68 public:
69 using fileapi::FileSystemMountPointProvider::OpenFileSystemCallback;
70 using fileapi::FileSystemMountPointProvider::DeleteFileSystemCallback;
71
72 // CrosMountPointProvider will take an ownership of a |mount_points|
73 // reference. On the other hand, |system_mount_points| will be kept as a raw
74 // pointer and it should outlive CrosMountPointProvider instance.
75 CrosMountPointProvider(
76 scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy,
77 scoped_refptr<fileapi::ExternalMountPoints> mount_points,
78 fileapi::ExternalMountPoints* system_mount_points);
79 virtual ~CrosMountPointProvider();
80
81 // Adds system mount points, such as "archive", and "removable". This
82 // function is no-op if these mount points are already present.
83 void AddSystemMountPoints();
84
85 // Returns true if CrosMountpointProvider can handle |url|, i.e. its
86 // file system type matches with what this provider supports.
87 // This could be called on any threads.
88 static bool CanHandleURL(const fileapi::FileSystemURL& url);
89
90 // fileapi::FileSystemMountPointProvider overrides.
91 virtual bool CanHandleType(fileapi::FileSystemType type) const OVERRIDE;
92 virtual void OpenFileSystem(
93 const GURL& origin_url,
94 fileapi::FileSystemType type,
95 fileapi::OpenFileSystemMode mode,
96 const OpenFileSystemCallback& callback) OVERRIDE;
97 virtual fileapi::FileSystemFileUtil* GetFileUtil(
98 fileapi::FileSystemType type) OVERRIDE;
99 virtual fileapi::AsyncFileUtil* GetAsyncFileUtil(
100 fileapi::FileSystemType type) OVERRIDE;
101 virtual fileapi::CopyOrMoveFileValidatorFactory*
102 GetCopyOrMoveFileValidatorFactory(
103 fileapi::FileSystemType type,
104 base::PlatformFileError* error_code) OVERRIDE;
105 virtual fileapi::FilePermissionPolicy GetPermissionPolicy(
106 const fileapi::FileSystemURL& url,
107 int permissions) const OVERRIDE;
108 virtual fileapi::FileSystemOperation* CreateFileSystemOperation(
109 const fileapi::FileSystemURL& url,
110 fileapi::FileSystemContext* context,
111 base::PlatformFileError* error_code) const OVERRIDE;
112 virtual scoped_ptr<webkit_blob::FileStreamReader> CreateFileStreamReader(
113 const fileapi::FileSystemURL& path,
114 int64 offset,
115 const base::Time& expected_modification_time,
116 fileapi::FileSystemContext* context) const OVERRIDE;
117 virtual scoped_ptr<fileapi::FileStreamWriter> CreateFileStreamWriter(
118 const fileapi::FileSystemURL& url,
119 int64 offset,
120 fileapi::FileSystemContext* context) const OVERRIDE;
121 virtual fileapi::FileSystemQuotaUtil* GetQuotaUtil() OVERRIDE;
122 virtual void DeleteFileSystem(
123 const GURL& origin_url,
124 fileapi::FileSystemType type,
125 fileapi::FileSystemContext* context,
126 const DeleteFileSystemCallback& callback) OVERRIDE;
127
128 // fileapi::ExternalFileSystemMountPointProvider overrides.
129 virtual bool IsAccessAllowed(const fileapi::FileSystemURL& url)
130 const OVERRIDE;
131 virtual std::vector<base::FilePath> GetRootDirectories() const OVERRIDE;
132 virtual void GrantFullAccessToExtension(
133 const std::string& extension_id) OVERRIDE;
134 virtual void GrantFileAccessToExtension(
135 const std::string& extension_id,
136 const base::FilePath& virtual_path) OVERRIDE;
137 virtual void RevokeAccessForExtension(
138 const std::string& extension_id) OVERRIDE;
139 virtual bool GetVirtualPath(const base::FilePath& filesystem_path,
140 base::FilePath* virtual_path) OVERRIDE;
141
142 private:
143 fileapi::RemoteFileSystemProxyInterface* GetRemoteProxy(
144 const std::string& mount_name) const;
145 base::FilePath GetFileSystemRootPath(const fileapi::FileSystemURL& url) const;
146
147 scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy_;
148 scoped_ptr<FileAccessPermissions> file_access_permissions_;
149 scoped_ptr<fileapi::AsyncFileUtilAdapter> local_file_util_;
150
151 // Mount points specific to the owning context (i.e. per-profile mount
152 // points).
153 //
154 // It is legal to have mount points with the same name as in
155 // system_mount_points_. Also, mount point paths may overlap with mount point
156 // paths in system_mount_points_. In both cases mount points in
157 // |mount_points_| will have a priority.
158 // E.g. if |mount_points_| map 'foo1' to '/foo/foo1' and
159 // |file_system_mount_points_| map 'xxx' to '/foo/foo1/xxx', |GetVirtualPaths|
160 // will resolve '/foo/foo1/xxx/yyy' as 'foo1/xxx/yyy' (i.e. the mapping from
161 // |mount_points_| will be used).
162 scoped_refptr<fileapi::ExternalMountPoints> mount_points_;
163
164 // Globally visible mount points. System MountPonts instance should outlive
165 // all CrosMountPointProvider instances, so raw pointer is safe.
166 fileapi::ExternalMountPoints* system_mount_points_;
167
168 DISALLOW_COPY_AND_ASSIGN(CrosMountPointProvider);
169 };
170
171 } // namespace chromeos
172
173 #endif // WEBKIT_BROWSER_CHROMEOS_FILEAPI_CROS_MOUNT_POINT_PROVIDER_H_
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