| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(BLOB) |
| |
| #include "BlobRegistryImpl.h" |
| |
| #include "BlobResourceHandle.h" |
| #include "ResourceError.h" |
| #include "ResourceHandle.h" |
| #include "ResourceLoader.h" |
| #include "ResourceRequest.h" |
| #include "ResourceResponse.h" |
| #include <wtf/MainThread.h> |
| #include <wtf/StdLibExtras.h> |
| |
| namespace WebCore { |
| |
| #if !PLATFORM(CHROMIUM) |
| BlobRegistry& blobRegistry() |
| { |
| ASSERT(isMainThread()); |
| DEFINE_STATIC_LOCAL(BlobRegistryImpl, instance, ()); |
| return instance; |
| } |
| |
| static PassRefPtr<ResourceHandle> createResourceHandle(const ResourceRequest& request, ResourceHandleClient* client) |
| { |
| return static_cast<BlobRegistryImpl&>(blobRegistry()).createResourceHandle(request, client); |
| } |
| |
| static void registerBlobResourceHandleConstructor() |
| { |
| static bool didRegister = false; |
| if (!didRegister) { |
| ResourceHandle::registerBuiltinConstructor("blob", createResourceHandle); |
| didRegister = true; |
| } |
| } |
| |
| #else |
| |
| static void registerBlobResourceHandleConstructor() |
| { |
| } |
| #endif |
| |
| bool BlobRegistryImpl::shouldLoadResource(const ResourceRequest& request) const |
| { |
| // If the resource is not fetched using the GET method, bail out. |
| if (!equalIgnoringCase(request.httpMethod(), "GET")) |
| return false; |
| |
| return true; |
| } |
| |
| PassRefPtr<ResourceHandle> BlobRegistryImpl::createResourceHandle(const ResourceRequest& request, ResourceHandleClient* client) |
| { |
| if (!shouldLoadResource(request)) |
| return 0; |
| |
| RefPtr<BlobResourceHandle> handle = BlobResourceHandle::create(m_blobs.get(request.url().string()), request, client); |
| handle->start(); |
| return handle.release(); |
| } |
| |
| bool BlobRegistryImpl::loadResourceSynchronously(const ResourceRequest& request, ResourceError& error, ResourceResponse& response, Vector<char>& data) |
| { |
| if (!shouldLoadResource(request)) |
| return false; |
| |
| BlobResourceHandle::loadResourceSynchronously(m_blobs.get(request.url().string()), request, error, response, data); |
| return true; |
| } |
| |
| void BlobRegistryImpl::appendStorageItems(BlobStorageData* blobStorageData, const BlobDataItemList& items) |
| { |
| for (BlobDataItemList::const_iterator iter = items.begin(); iter != items.end(); ++iter) { |
| if (iter->type == BlobDataItem::Data) |
| blobStorageData->m_data.appendData(iter->data, iter->offset, iter->length); |
| #if ENABLE(FILE_SYSTEM) |
| else if (iter->type == BlobDataItem::URL) |
| blobStorageData->m_data.appendURL(iter->url, iter->offset, iter->length, iter->expectedModificationTime); |
| #endif |
| else { |
| ASSERT(iter->type == BlobDataItem::File); |
| blobStorageData->m_data.appendFile(iter->path, iter->offset, iter->length, iter->expectedModificationTime); |
| } |
| } |
| } |
| |
| void BlobRegistryImpl::appendStorageItems(BlobStorageData* blobStorageData, const BlobDataItemList& items, long long offset, long long length) |
| { |
| ASSERT(length != BlobDataItem::toEndOfFile); |
| |
| BlobDataItemList::const_iterator iter = items.begin(); |
| if (offset) { |
| for (; iter != items.end(); ++iter) { |
| if (offset >= iter->length) |
| offset -= iter->length; |
| else |
| break; |
| } |
| } |
| |
| for (; iter != items.end() && length > 0; ++iter) { |
| long long currentLength = iter->length - offset; |
| long long newLength = currentLength > length ? length : currentLength; |
| if (iter->type == BlobDataItem::Data) |
| blobStorageData->m_data.appendData(iter->data, iter->offset + offset, newLength); |
| #if ENABLE(FILE_SYSTEM) |
| else if (iter->type == BlobDataItem::URL) |
| blobStorageData->m_data.appendURL(iter->url, iter->offset + offset, newLength, iter->expectedModificationTime); |
| #endif |
| else { |
| ASSERT(iter->type == BlobDataItem::File); |
| blobStorageData->m_data.appendFile(iter->path, iter->offset + offset, newLength, iter->expectedModificationTime); |
| } |
| length -= newLength; |
| offset = 0; |
| } |
| } |
| |
| void BlobRegistryImpl::registerBlobURL(const KURL& url, PassOwnPtr<BlobData> blobData) |
| { |
| ASSERT(isMainThread()); |
| registerBlobResourceHandleConstructor(); |
| |
| RefPtr<BlobStorageData> blobStorageData = BlobStorageData::create(blobData->contentType(), blobData->contentDisposition()); |
| |
| // The blob data is stored in the "canonical" way. That is, it only contains a list of Data and File items. |
| // 1) The Data item is denoted by the raw data and the range. |
| // 2) The File item is denoted by the file path, the range and the expected modification time. |
| // 3) The URL item is denoted by the URL, the range and the expected modification time. |
| // All the Blob items in the passing blob data are resolved and expanded into a set of Data and File items. |
| |
| for (BlobDataItemList::const_iterator iter = blobData->items().begin(); iter != blobData->items().end(); ++iter) { |
| switch (iter->type) { |
| case BlobDataItem::Data: |
| blobStorageData->m_data.appendData(iter->data, 0, iter->data->length()); |
| break; |
| case BlobDataItem::File: |
| blobStorageData->m_data.appendFile(iter->path, iter->offset, iter->length, iter->expectedModificationTime); |
| break; |
| #if ENABLE(FILE_SYSTEM) |
| case BlobDataItem::URL: |
| blobStorageData->m_data.appendURL(iter->url, iter->offset, iter->length, iter->expectedModificationTime); |
| break; |
| #endif |
| case BlobDataItem::Blob: |
| if (m_blobs.contains(iter->url.string())) |
| appendStorageItems(blobStorageData.get(), m_blobs.get(iter->url.string())->items(), iter->offset, iter->length); |
| break; |
| } |
| } |
| |
| m_blobs.set(url.string(), blobStorageData); |
| } |
| |
| void BlobRegistryImpl::registerBlobURL(const KURL& url, const KURL& srcURL) |
| { |
| ASSERT(isMainThread()); |
| registerBlobResourceHandleConstructor(); |
| |
| RefPtr<BlobStorageData> src = m_blobs.get(srcURL.string()); |
| ASSERT(src); |
| if (!src) |
| return; |
| |
| m_blobs.set(url.string(), src); |
| } |
| |
| void BlobRegistryImpl::unregisterBlobURL(const KURL& url) |
| { |
| ASSERT(isMainThread()); |
| m_blobs.remove(url.string()); |
| } |
| |
| PassRefPtr<BlobStorageData> BlobRegistryImpl::getBlobDataFromURL(const KURL& url) const |
| { |
| ASSERT(isMainThread()); |
| return m_blobs.get(url.string()); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(BLOB) |