| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "cobalt/dom/url.h" |
| |
| #include "base/guid.h" |
| #include "base/logging.h" |
| #include "cobalt/base/polymorphic_downcast.h" |
| #include "cobalt/dom/dom_settings.h" |
| #include "googleurl/src/gurl.h" |
| |
| namespace cobalt { |
| namespace dom { |
| |
| namespace { |
| |
| const char kBlobUrlProtocol[] = "blob"; |
| |
| } // namespace |
| |
| // static |
| std::string URL::CreateObjectURL( |
| script::EnvironmentSettings* environment_settings, |
| const scoped_refptr<MediaSource>& media_source) { |
| DOMSettings* dom_settings = |
| base::polymorphic_downcast<DOMSettings*>(environment_settings); |
| DCHECK(dom_settings); |
| DCHECK(dom_settings->media_source_registry()); |
| if (!media_source) { |
| return ""; |
| } |
| |
| std::string blob_url = kBlobUrlProtocol; |
| blob_url += ':' + base::GenerateGUID(); |
| dom_settings->media_source_registry()->Register(blob_url, media_source); |
| return blob_url; |
| } |
| |
| // static |
| std::string URL::CreateObjectURL( |
| script::EnvironmentSettings* environment_settings, |
| const scoped_refptr<Blob>& blob) { |
| DOMSettings* dom_settings = |
| base::polymorphic_downcast<DOMSettings*>(environment_settings); |
| DCHECK(dom_settings); |
| DCHECK(dom_settings->blob_registry()); |
| if (!blob) { |
| return ""; |
| } |
| |
| std::string blob_url = kBlobUrlProtocol; |
| blob_url += ':' + base::GenerateGUID(); |
| dom_settings->blob_registry()->Register(blob_url, blob); |
| return blob_url; |
| } |
| |
| // static |
| void URL::RevokeObjectURL(script::EnvironmentSettings* environment_settings, |
| const std::string& url) { |
| DOMSettings* dom_settings = |
| base::polymorphic_downcast<DOMSettings*>(environment_settings); |
| DCHECK(dom_settings); |
| DCHECK(dom_settings->media_source_registry()); |
| |
| // 1. If the url refers to a Blob that has a readability state of CLOSED OR if |
| // the value provided for the url argument is not a Blob URL, OR if the value |
| // provided for the url argument does not have an entry in the Blob URL Store, |
| // this method call does nothing. User agents may display a message on the |
| // error console. |
| if (!GURL(url).SchemeIs(kBlobUrlProtocol)) { |
| LOG(WARNING) << "URL is not a Blob URL."; |
| return; |
| } |
| |
| // 2. Otherwise, user agents must remove the entry from the Blob URL Store for |
| // url. |
| if (!dom_settings->media_source_registry()->Unregister(url) && |
| !dom_settings->blob_registry()->Unregister(url)) { |
| DLOG(WARNING) << "Cannot find object for blob url " << url; |
| } |
| } |
| |
| bool URL::BlobResolver(dom::Blob::Registry* registry, const GURL& url, |
| const char** data, size_t* size) { |
| DCHECK(data); |
| DCHECK(size); |
| |
| *size = 0; |
| *data = NULL; |
| |
| dom::Blob* blob = registry->Retrieve(url.spec()).get(); |
| |
| if (blob) { |
| *size = static_cast<size_t>(blob->size()); |
| |
| if (*size > 0) { |
| *data = reinterpret_cast<const char*>(blob->data()); |
| } |
| |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| } // namespace dom |
| } // namespace cobalt |