| // Copyright 2015 The Cobalt Authors. 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_parser/html_decoder.h" |
| |
| #include "cobalt/csp/content_security_policy.h" |
| #include "cobalt/dom/csp_delegate.h" |
| #include "cobalt/dom_parser/libxml_html_parser_wrapper.h" |
| #include "cobalt/loader/net_fetcher.h" |
| |
| namespace cobalt { |
| namespace dom_parser { |
| |
| HTMLDecoder::HTMLDecoder( |
| const scoped_refptr<dom::Document>& document, |
| const scoped_refptr<dom::Node>& parent_node, |
| const scoped_refptr<dom::Node>& reference_node, |
| const int dom_max_element_depth, const base::SourceLocation& input_location, |
| const loader::Decoder::OnCompleteFunction& load_complete_callback, |
| const bool should_run_scripts, const csp::CSPHeaderPolicy require_csp) |
| : libxml_html_parser_wrapper_(new LibxmlHTMLParserWrapper( |
| document, parent_node, reference_node, dom_max_element_depth, |
| input_location, load_complete_callback, should_run_scripts)), |
| document_(document), |
| require_csp_(require_csp), |
| load_complete_callback_(load_complete_callback) {} |
| |
| HTMLDecoder::~HTMLDecoder() {} |
| |
| loader::LoadResponseType HTMLDecoder::OnResponseStarted( |
| loader::Fetcher* fetcher, |
| const scoped_refptr<net::HttpResponseHeaders>& headers) { |
| DCHECK(headers); |
| // Only NetFetchers can call this, since only they have |
| // the response headers. |
| loader::NetFetcher* net_fetcher = |
| base::polymorphic_downcast<loader::NetFetcher*>(fetcher); |
| net::URLFetcher* url_fetcher = net_fetcher->url_fetcher(); |
| if (url_fetcher->GetURL() != url_fetcher->GetOriginalURL()) { |
| document_->NotifyUrlChanged(url_fetcher->GetURL()); |
| } |
| |
| if (headers->HasHeaderValue("cobalt-jit", "disable")) { |
| document_->DisableJit(); |
| } else if (headers->HasHeader("cobalt-jit")) { |
| std::string value; |
| headers->GetNormalizedHeader("cobalt-jit", &value); |
| LOG(WARNING) << "Invalid value for \"cobalt-jit\" header: " << value; |
| } |
| |
| csp::ResponseHeaders csp_headers(headers); |
| if (document_->csp_delegate()->OnReceiveHeaders(csp_headers) || |
| require_csp_ == csp::kCSPOptional) { |
| return loader::kLoadResponseContinue; |
| } else { |
| LOG(ERROR) << "Failure receiving Content Security Policy headers " |
| "for URL: " << url_fetcher->GetURL() << "."; |
| LOG(ERROR) << "The server *must* send CSP headers or Cobalt will not " |
| "load the page."; |
| return loader::kLoadResponseAbort; |
| } |
| } |
| |
| void HTMLDecoder::DecodeChunk(const char* data, size_t size) { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| libxml_html_parser_wrapper_->DecodeChunk(data, size); |
| } |
| |
| void HTMLDecoder::Finish() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| libxml_html_parser_wrapper_->Finish(); |
| if (!load_complete_callback_.is_null()) { |
| load_complete_callback_.Run(base::nullopt); |
| } |
| } |
| |
| } // namespace dom_parser |
| } // namespace cobalt |