1/*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2009, 2011 Google Inc. All Rights Reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include "config.h"
29#include "WorkerContextFileSystem.h"
30
31#if ENABLE(FILE_SYSTEM)
32
33#include "AsyncFileSystem.h"
34#include "DOMFileSystemBase.h"
35#include "DOMFileSystemSync.h"
36#include "DirectoryEntrySync.h"
37#include "ErrorCallback.h"
38#include "FileEntrySync.h"
39#include "FileError.h"
40#include "FileException.h"
41#include "FileSystemCallback.h"
42#include "FileSystemCallbacks.h"
43#include "FileSystemType.h"
44#include "LocalFileSystem.h"
45#include "SecurityOrigin.h"
46#include "SyncCallbackHelper.h"
47#include "WorkerContext.h"
48
49namespace WebCore {
50
51void WorkerContextFileSystem::webkitRequestFileSystem(WorkerContext* worker, int type, long long size, PassRefPtr<FileSystemCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
52{
53    ScriptExecutionContext* secureContext = worker->scriptExecutionContext();
54    if (!AsyncFileSystem::isAvailable() || !secureContext->securityOrigin()->canAccessFileSystem()) {
55        DOMFileSystem::scheduleCallback(worker, errorCallback, FileError::create(FileError::SECURITY_ERR));
56        return;
57    }
58
59    FileSystemType fileSystemType = static_cast<FileSystemType>(type);
60    if (!DOMFileSystemBase::isValidType(fileSystemType)) {
61        DOMFileSystem::scheduleCallback(worker, errorCallback, FileError::create(FileError::INVALID_MODIFICATION_ERR));
62        return;
63    }
64
65    LocalFileSystem::localFileSystem().requestFileSystem(worker, fileSystemType, size, FileSystemCallbacks::create(successCallback, errorCallback, worker, fileSystemType), AsynchronousFileSystem);
66}
67
68PassRefPtr<DOMFileSystemSync> WorkerContextFileSystem::webkitRequestFileSystemSync(WorkerContext* worker, int type, long long size, ExceptionCode& ec)
69{
70    ec = 0;
71    ScriptExecutionContext* secureContext = worker->scriptExecutionContext();
72    if (!AsyncFileSystem::isAvailable() || !secureContext->securityOrigin()->canAccessFileSystem()) {
73        ec = FileException::SECURITY_ERR;
74        return 0;
75    }
76
77    FileSystemType fileSystemType = static_cast<FileSystemType>(type);
78    if (!DOMFileSystemBase::isValidType(fileSystemType)) {
79        ec = FileException::INVALID_MODIFICATION_ERR;
80        return 0;
81    }
82
83    FileSystemSyncCallbackHelper helper;
84    LocalFileSystem::localFileSystem().requestFileSystem(worker, fileSystemType, size, FileSystemCallbacks::create(helper.successCallback(), helper.errorCallback(), worker, fileSystemType), SynchronousFileSystem);
85    return helper.getResult(ec);
86}
87
88void WorkerContextFileSystem::webkitResolveLocalFileSystemURL(WorkerContext* worker, const String& url, PassRefPtr<EntryCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
89{
90    KURL completedURL = worker->completeURL(url);
91    ScriptExecutionContext* secureContext = worker->scriptExecutionContext();
92    if (!AsyncFileSystem::isAvailable() || !secureContext->securityOrigin()->canAccessFileSystem() || !secureContext->securityOrigin()->canRequest(completedURL)) {
93        DOMFileSystem::scheduleCallback(worker, errorCallback, FileError::create(FileError::SECURITY_ERR));
94        return;
95    }
96
97    FileSystemType type;
98    String filePath;
99    if (!completedURL.isValid() || !DOMFileSystemBase::crackFileSystemURL(completedURL, type, filePath)) {
100        DOMFileSystem::scheduleCallback(worker, errorCallback, FileError::create(FileError::ENCODING_ERR));
101        return;
102    }
103
104    LocalFileSystem::localFileSystem().readFileSystem(worker, type, ResolveURICallbacks::create(successCallback, errorCallback, worker, type, filePath));
105}
106
107PassRefPtr<EntrySync> WorkerContextFileSystem::webkitResolveLocalFileSystemSyncURL(WorkerContext* worker, const String& url, ExceptionCode& ec)
108{
109    ec = 0;
110    KURL completedURL = worker->completeURL(url);
111    ScriptExecutionContext* secureContext = worker->scriptExecutionContext();
112    if (!AsyncFileSystem::isAvailable() || !secureContext->securityOrigin()->canAccessFileSystem() || !secureContext->securityOrigin()->canRequest(completedURL)) {
113        ec = FileException::SECURITY_ERR;
114        return 0;
115    }
116
117    FileSystemType type;
118    String filePath;
119    if (!completedURL.isValid() || !DOMFileSystemBase::crackFileSystemURL(completedURL, type, filePath)) {
120        ec = FileException::ENCODING_ERR;
121        return 0;
122    }
123
124    FileSystemSyncCallbackHelper readFileSystemHelper;
125    LocalFileSystem::localFileSystem().readFileSystem(worker, type, FileSystemCallbacks::create(readFileSystemHelper.successCallback(), readFileSystemHelper.errorCallback(), worker, type), SynchronousFileSystem);
126    RefPtr<DOMFileSystemSync> fileSystem = readFileSystemHelper.getResult(ec);
127    if (!fileSystem)
128        return 0;
129
130    RefPtr<EntrySync> entry = fileSystem->root()->getDirectory(filePath, Dictionary(), ec);
131    if (ec == FileException::TYPE_MISMATCH_ERR)
132        return fileSystem->root()->getFile(filePath, Dictionary(), ec);
133
134    return entry.release();
135}
136
137COMPILE_ASSERT(static_cast<int>(WorkerContextFileSystem::TEMPORARY) == static_cast<int>(FileSystemTypeTemporary), enum_mismatch);
138COMPILE_ASSERT(static_cast<int>(WorkerContextFileSystem::PERSISTENT) == static_cast<int>(FileSystemTypePersistent), enum_mismatch);
139
140} // namespace WebCore
141
142#endif // ENABLE(FILE_SYSTEM)
143