| // Copyright 2013 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 "content/browser/loader/upload_data_stream_builder.h" |
| |
| #include "base/logging.h" |
| #include "net/base/upload_bytes_element_reader.h" |
| #include "net/base/upload_data_stream.h" |
| #include "net/base/upload_file_element_reader.h" |
| #include "webkit/browser/blob/blob_data_handle.h" |
| #include "webkit/browser/blob/blob_storage_context.h" |
| #include "webkit/browser/fileapi/upload_file_system_file_element_reader.h" |
| #include "webkit/common/resource_request_body.h" |
| |
| using webkit_blob::BlobData; |
| using webkit_blob::BlobDataHandle; |
| using webkit_blob::BlobStorageContext; |
| using webkit_glue::ResourceRequestBody; |
| |
| namespace content { |
| namespace { |
| |
| // A subclass of net::UploadBytesElementReader which owns ResourceRequestBody. |
| class BytesElementReader : public net::UploadBytesElementReader { |
| public: |
| BytesElementReader(ResourceRequestBody* resource_request_body, |
| const ResourceRequestBody::Element& element) |
| : net::UploadBytesElementReader(element.bytes(), element.length()), |
| resource_request_body_(resource_request_body) { |
| DCHECK_EQ(ResourceRequestBody::Element::TYPE_BYTES, element.type()); |
| } |
| |
| virtual ~BytesElementReader() {} |
| |
| private: |
| scoped_refptr<ResourceRequestBody> resource_request_body_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BytesElementReader); |
| }; |
| |
| // A subclass of net::UploadFileElementReader which owns ResourceRequestBody. |
| // This class is necessary to ensure the BlobData and any attached shareable |
| // files survive until upload completion. |
| class FileElementReader : public net::UploadFileElementReader { |
| public: |
| FileElementReader(ResourceRequestBody* resource_request_body, |
| base::TaskRunner* task_runner, |
| const ResourceRequestBody::Element& element) |
| : net::UploadFileElementReader(task_runner, |
| element.path(), |
| element.offset(), |
| element.length(), |
| element.expected_modification_time()), |
| resource_request_body_(resource_request_body) { |
| DCHECK_EQ(ResourceRequestBody::Element::TYPE_FILE, element.type()); |
| } |
| |
| virtual ~FileElementReader() {} |
| |
| private: |
| scoped_refptr<ResourceRequestBody> resource_request_body_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FileElementReader); |
| }; |
| |
| void ResolveBlobReference( |
| ResourceRequestBody* body, |
| webkit_blob::BlobStorageContext* blob_context, |
| const ResourceRequestBody::Element& element, |
| std::vector<const ResourceRequestBody::Element*>* resolved_elements) { |
| DCHECK(blob_context); |
| scoped_ptr<webkit_blob::BlobDataHandle> handle = |
| blob_context->GetBlobDataFromUUID(element.blob_uuid()); |
| DCHECK(handle); |
| if (!handle) |
| return; |
| |
| // If there is no element in the referred blob data, just return. |
| if (handle->data()->items().empty()) |
| return; |
| |
| // Append the elements in the referenced blob data. |
| for (size_t i = 0; i < handle->data()->items().size(); ++i) { |
| const BlobData::Item& item = handle->data()->items().at(i); |
| DCHECK_NE(BlobData::Item::TYPE_BLOB, item.type()); |
| resolved_elements->push_back(&item); |
| } |
| |
| // Ensure the blob and any attached shareable files survive until |
| // upload completion. The |body| takes ownership of |handle|. |
| const void* key = handle.get(); |
| body->SetUserData(key, handle.release()); |
| } |
| |
| } // namespace |
| |
| scoped_ptr<net::UploadDataStream> UploadDataStreamBuilder::Build( |
| ResourceRequestBody* body, |
| BlobStorageContext* blob_context, |
| fileapi::FileSystemContext* file_system_context, |
| base::TaskRunner* file_task_runner) { |
| // Resolve all blob elements. |
| std::vector<const ResourceRequestBody::Element*> resolved_elements; |
| for (size_t i = 0; i < body->elements()->size(); ++i) { |
| const ResourceRequestBody::Element& element = (*body->elements())[i]; |
| if (element.type() == ResourceRequestBody::Element::TYPE_BLOB) |
| ResolveBlobReference(body, blob_context, element, &resolved_elements); |
| else |
| resolved_elements.push_back(&element); |
| } |
| |
| ScopedVector<net::UploadElementReader> element_readers; |
| for (size_t i = 0; i < resolved_elements.size(); ++i) { |
| const ResourceRequestBody::Element& element = *resolved_elements[i]; |
| switch (element.type()) { |
| case ResourceRequestBody::Element::TYPE_BYTES: |
| element_readers.push_back(new BytesElementReader(body, element)); |
| break; |
| case ResourceRequestBody::Element::TYPE_FILE: |
| element_readers.push_back( |
| new FileElementReader(body, file_task_runner, element)); |
| break; |
| case ResourceRequestBody::Element::TYPE_FILE_FILESYSTEM: |
| element_readers.push_back( |
| new fileapi::UploadFileSystemFileElementReader( |
| file_system_context, |
| element.filesystem_url(), |
| element.offset(), |
| element.length(), |
| element.expected_modification_time())); |
| break; |
| case ResourceRequestBody::Element::TYPE_BLOB: |
| // Blob elements should be resolved beforehand. |
| NOTREACHED(); |
| break; |
| case ResourceRequestBody::Element::TYPE_UNKNOWN: |
| NOTREACHED(); |
| break; |
| } |
| } |
| |
| return make_scoped_ptr( |
| new net::UploadDataStream(element_readers.Pass(), body->identifier())); |
| } |
| |
| } // namespace content |