1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/browser/fileapi/sandbox_file_system_backend.h"
#include "base/bind.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/task_runner_util.h"
#include "url/gurl.h"
#include "webkit/browser/blob/file_stream_reader.h"
#include "webkit/browser/fileapi/async_file_util_adapter.h"
#include "webkit/browser/fileapi/copy_or_move_file_validator.h"
#include "webkit/browser/fileapi/file_stream_writer.h"
#include "webkit/browser/fileapi/file_system_context.h"
#include "webkit/browser/fileapi/file_system_operation.h"
#include "webkit/browser/fileapi/file_system_operation_context.h"
#include "webkit/browser/fileapi/file_system_options.h"
#include "webkit/browser/fileapi/file_system_usage_cache.h"
#include "webkit/browser/fileapi/obfuscated_file_util.h"
#include "webkit/browser/fileapi/sandbox_file_system_backend_delegate.h"
#include "webkit/browser/fileapi/sandbox_quota_observer.h"
#include "webkit/browser/quota/quota_manager.h"
#include "webkit/common/fileapi/file_system_types.h"
#include "webkit/common/fileapi/file_system_util.h"
using storage::QuotaManagerProxy;
using storage::SpecialStoragePolicy;
namespace storage {
SandboxFileSystemBackend::SandboxFileSystemBackend(
SandboxFileSystemBackendDelegate* delegate)
: delegate_(delegate),
enable_temporary_file_system_in_incognito_(false) {
}
SandboxFileSystemBackend::~SandboxFileSystemBackend() {
}
bool SandboxFileSystemBackend::CanHandleType(FileSystemType type) const {
return type == kFileSystemTypeTemporary ||
type == kFileSystemTypePersistent;
}
void SandboxFileSystemBackend::Initialize(FileSystemContext* context) {
DCHECK(delegate_);
// Set quota observers.
delegate_->RegisterQuotaUpdateObserver(storage::kFileSystemTypeTemporary);
delegate_->AddFileAccessObserver(
storage::kFileSystemTypeTemporary, delegate_->quota_observer(), NULL);
delegate_->RegisterQuotaUpdateObserver(storage::kFileSystemTypePersistent);
delegate_->AddFileAccessObserver(
storage::kFileSystemTypePersistent, delegate_->quota_observer(), NULL);
}
void SandboxFileSystemBackend::ResolveURL(
const FileSystemURL& url,
OpenFileSystemMode mode,
const OpenFileSystemCallback& callback) {
DCHECK(CanHandleType(url.type()));
DCHECK(delegate_);
if (delegate_->file_system_options().is_incognito() &&
!(url.type() == kFileSystemTypeTemporary &&
enable_temporary_file_system_in_incognito_)) {
// TODO(kinuko): return an isolated temporary directory.
callback.Run(GURL(), std::string(), base::File::FILE_ERROR_SECURITY);
return;
}
delegate_->OpenFileSystem(url.origin(),
url.type(),
mode,
callback,
GetFileSystemRootURI(url.origin(), url.type()));
}
AsyncFileUtil* SandboxFileSystemBackend::GetAsyncFileUtil(
FileSystemType type) {
DCHECK(delegate_);
return delegate_->file_util();
}
WatcherManager* SandboxFileSystemBackend::GetWatcherManager(
FileSystemType type) {
return NULL;
}
CopyOrMoveFileValidatorFactory*
SandboxFileSystemBackend::GetCopyOrMoveFileValidatorFactory(
FileSystemType type,
base::File::Error* error_code) {
DCHECK(error_code);
*error_code = base::File::FILE_OK;
return NULL;
}
FileSystemOperation* SandboxFileSystemBackend::CreateFileSystemOperation(
const FileSystemURL& url,
FileSystemContext* context,
base::File::Error* error_code) const {
DCHECK(CanHandleType(url.type()));
DCHECK(error_code);
DCHECK(delegate_);
scoped_ptr<FileSystemOperationContext> operation_context =
delegate_->CreateFileSystemOperationContext(url, context, error_code);
if (!operation_context)
return NULL;
SpecialStoragePolicy* policy = delegate_->special_storage_policy();
if (policy && policy->IsStorageUnlimited(url.origin()))
operation_context->set_quota_limit_type(storage::kQuotaLimitTypeUnlimited);
else
operation_context->set_quota_limit_type(storage::kQuotaLimitTypeLimited);
return FileSystemOperation::Create(url, context, operation_context.Pass());
}
bool SandboxFileSystemBackend::SupportsStreaming(
const storage::FileSystemURL& url) const {
return false;
}
bool SandboxFileSystemBackend::HasInplaceCopyImplementation(
storage::FileSystemType type) const {
return true;
}
scoped_ptr<storage::FileStreamReader>
SandboxFileSystemBackend::CreateFileStreamReader(
const FileSystemURL& url,
int64 offset,
const base::Time& expected_modification_time,
FileSystemContext* context) const {
DCHECK(CanHandleType(url.type()));
DCHECK(delegate_);
return delegate_->CreateFileStreamReader(
url, offset, expected_modification_time, context);
}
scoped_ptr<storage::FileStreamWriter>
SandboxFileSystemBackend::CreateFileStreamWriter(
const FileSystemURL& url,
int64 offset,
FileSystemContext* context) const {
DCHECK(CanHandleType(url.type()));
DCHECK(delegate_);
return delegate_->CreateFileStreamWriter(url, offset, context, url.type());
}
FileSystemQuotaUtil* SandboxFileSystemBackend::GetQuotaUtil() {
return delegate_;
}
SandboxFileSystemBackendDelegate::OriginEnumerator*
SandboxFileSystemBackend::CreateOriginEnumerator() {
DCHECK(delegate_);
return delegate_->CreateOriginEnumerator();
}
} // namespace storage
|
