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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "WorkerAsyncFileSystemChromium.h"
     33 
     34 #include "WebFileSystemCallbacksImpl.h"
     35 #include "WebFileWriter.h"
     36 #include "WorkerAsyncFileWriterChromium.h"
     37 #include "WorkerFileSystemCallbacksBridge.h"
     38 #include "bindings/v8/WorkerScriptController.h"
     39 #include "core/fileapi/BlobURL.h"
     40 #include "core/platform/AsyncFileSystemCallbacks.h"
     41 #include "core/platform/FileMetadata.h"
     42 #include "core/platform/FileSystem.h"
     43 #include "core/platform/NotImplemented.h"
     44 #include "core/workers/WorkerGlobalScope.h"
     45 #include "core/workers/WorkerThread.h"
     46 #include "public/platform/WebFileSystem.h"
     47 #include "wtf/text/CString.h"
     48 
     49 using namespace WebKit;
     50 
     51 namespace WebCore {
     52 
     53 static const char fileSystemOperationsMode[] = "fileSystemOperationsMode";
     54 
     55 WorkerAsyncFileSystemChromium::WorkerAsyncFileSystemChromium(ScriptExecutionContext* context, FileSystemSynchronousType synchronousType)
     56     : m_scriptExecutionContext(context)
     57     , m_workerGlobalScope(toWorkerGlobalScope(context))
     58     , m_synchronousType(synchronousType)
     59 {
     60     ASSERT(m_scriptExecutionContext->isWorkerGlobalScope());
     61 
     62     m_workerLoaderProxy = &m_workerGlobalScope->thread()->workerLoaderProxy();
     63 }
     64 
     65 WorkerAsyncFileSystemChromium::~WorkerAsyncFileSystemChromium()
     66 {
     67 }
     68 
     69 bool WorkerAsyncFileSystemChromium::waitForOperationToComplete()
     70 {
     71     if (!m_bridgeForCurrentOperation)
     72         return false;
     73 
     74     RefPtr<WorkerFileSystemCallbacksBridge> bridge = m_bridgeForCurrentOperation.release();
     75     if (m_workerGlobalScope->thread()->runLoop().runInMode(m_workerGlobalScope, m_modeForCurrentOperation) == MessageQueueTerminated) {
     76         bridge->stop();
     77         return false;
     78     }
     79     return true;
     80 }
     81 
     82 void WorkerAsyncFileSystemChromium::move(const KURL& sourcePath, const KURL& destinationPath, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
     83 {
     84     createWorkerFileSystemCallbacksBridge(callbacks)->postMoveToMainThread(m_webFileSystem, sourcePath, destinationPath, m_modeForCurrentOperation);
     85 }
     86 
     87 void WorkerAsyncFileSystemChromium::copy(const KURL& sourcePath, const KURL& destinationPath, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
     88 {
     89     createWorkerFileSystemCallbacksBridge(callbacks)->postCopyToMainThread(m_webFileSystem, sourcePath, destinationPath, m_modeForCurrentOperation);
     90 }
     91 
     92 void WorkerAsyncFileSystemChromium::remove(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
     93 {
     94     createWorkerFileSystemCallbacksBridge(callbacks)->postRemoveToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
     95 }
     96 
     97 void WorkerAsyncFileSystemChromium::removeRecursively(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
     98 {
     99     createWorkerFileSystemCallbacksBridge(callbacks)->postRemoveRecursivelyToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    100 }
    101 
    102 void WorkerAsyncFileSystemChromium::readMetadata(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    103 {
    104     createWorkerFileSystemCallbacksBridge(callbacks)->postReadMetadataToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    105 }
    106 
    107 void WorkerAsyncFileSystemChromium::createFile(const KURL& path, bool exclusive, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    108 {
    109     createWorkerFileSystemCallbacksBridge(callbacks)->postCreateFileToMainThread(m_webFileSystem, path, exclusive, m_modeForCurrentOperation);
    110 }
    111 
    112 void WorkerAsyncFileSystemChromium::createDirectory(const KURL& path, bool exclusive, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    113 {
    114     createWorkerFileSystemCallbacksBridge(callbacks)->postCreateDirectoryToMainThread(m_webFileSystem, path, exclusive, m_modeForCurrentOperation);
    115 }
    116 
    117 void WorkerAsyncFileSystemChromium::fileExists(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    118 {
    119     createWorkerFileSystemCallbacksBridge(callbacks)->postFileExistsToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    120 }
    121 
    122 void WorkerAsyncFileSystemChromium::directoryExists(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    123 {
    124     createWorkerFileSystemCallbacksBridge(callbacks)->postDirectoryExistsToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    125 }
    126 
    127 void WorkerAsyncFileSystemChromium::readDirectory(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    128 {
    129     createWorkerFileSystemCallbacksBridge(callbacks)->postReadDirectoryToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    130 }
    131 
    132 class WorkerFileWriterHelperCallbacks : public AsyncFileSystemCallbacks {
    133 public:
    134     static PassOwnPtr<WorkerFileWriterHelperCallbacks> create(AsyncFileWriterClient* client, const WebURL& path, WebKit::WebFileSystem* webFileSystem, PassOwnPtr<WebCore::AsyncFileSystemCallbacks> callbacks, WorkerGlobalScope* workerGlobalScope)
    135     {
    136         return adoptPtr(new WorkerFileWriterHelperCallbacks(client, path, webFileSystem, callbacks, workerGlobalScope));
    137     }
    138 
    139     virtual void didReadMetadata(const FileMetadata& metadata)
    140     {
    141         ASSERT(m_callbacks);
    142         if (metadata.type != FileMetadata::TypeFile || metadata.length < 0)
    143             m_callbacks->didFail(WebKit::WebFileErrorInvalidState);
    144         else {
    145             OwnPtr<WorkerAsyncFileWriterChromium> asyncFileWriterChromium = WorkerAsyncFileWriterChromium::create(m_webFileSystem, m_path, m_workerGlobalScope, m_client, WorkerAsyncFileWriterChromium::Asynchronous);
    146             m_callbacks->didCreateFileWriter(asyncFileWriterChromium.release(), metadata.length);
    147         }
    148     }
    149 
    150     virtual void didFail(int code)
    151     {
    152         ASSERT(m_callbacks);
    153         m_callbacks->didFail(code);
    154     }
    155 
    156 private:
    157     WorkerFileWriterHelperCallbacks(AsyncFileWriterClient* client, const WebURL& path, WebKit::WebFileSystem* webFileSystem, PassOwnPtr<WebCore::AsyncFileSystemCallbacks> callbacks, WorkerGlobalScope* workerGlobalScope)
    158         : m_client(client)
    159         , m_path(path)
    160         , m_webFileSystem(webFileSystem)
    161         , m_callbacks(callbacks)
    162         , m_workerGlobalScope(workerGlobalScope)
    163     {
    164     }
    165 
    166     AsyncFileWriterClient* m_client;
    167     WebURL m_path;
    168     WebKit::WebFileSystem* m_webFileSystem;
    169     OwnPtr<WebCore::AsyncFileSystemCallbacks> m_callbacks;
    170     WorkerGlobalScope* m_workerGlobalScope;
    171 };
    172 
    173 void WorkerAsyncFileSystemChromium::createWriter(AsyncFileWriterClient* client, const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    174 {
    175     createWorkerFileSystemCallbacksBridge(WorkerFileWriterHelperCallbacks::create(client, path, m_webFileSystem, callbacks, m_workerGlobalScope))->postReadMetadataToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    176 }
    177 
    178 void WorkerAsyncFileSystemChromium::createSnapshotFileAndReadMetadata(const KURL& path, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    179 {
    180     createWorkerFileSystemCallbacksBridge(callbacks)->postCreateSnapshotFileToMainThread(m_webFileSystem, path, m_modeForCurrentOperation);
    181 }
    182 
    183 PassRefPtr<WorkerFileSystemCallbacksBridge> WorkerAsyncFileSystemChromium::createWorkerFileSystemCallbacksBridge(PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
    184 {
    185     ASSERT_UNUSED(m_synchronousType, m_synchronousType == AsynchronousFileSystem || !m_bridgeForCurrentOperation);
    186 
    187     m_modeForCurrentOperation = fileSystemOperationsMode;
    188     m_modeForCurrentOperation.append(String::number(m_workerGlobalScope->thread()->runLoop().createUniqueId()));
    189 
    190     m_bridgeForCurrentOperation = WorkerFileSystemCallbacksBridge::create(m_workerLoaderProxy, m_scriptExecutionContext, new WebKit::WebFileSystemCallbacksImpl(callbacks));
    191     return m_bridgeForCurrentOperation;
    192 }
    193 
    194 } // namespace WebCore
    195