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// Copyright 2017 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/common/service_worker/service_worker_loader_helpers.h"
#include <limits>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/strings/stringprintf.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"
#include "net/http/http_util.h"
#include "net/url_request/redirect_info.h"
#include "net/url_request/redirect_util.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/resource_request_body.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "third_party/blink/public/common/blob/blob_utils.h"
#include "third_party/blink/public/mojom/loader/resource_load_info.mojom-shared.h"
#include "ui/base/page_transition_types.h"
namespace content {
namespace {
// Calls |callback| when Blob reading is complete.
class BlobCompleteCaller : public blink::mojom::BlobReaderClient {
public:
using BlobCompleteCallback = base::OnceCallback<void(int net_error)>;
explicit BlobCompleteCaller(BlobCompleteCallback callback)
: callback_(std::move(callback)) {}
~BlobCompleteCaller() override = default;
void OnCalculatedSize(uint64_t total_size,
uint64_t expected_content_size) override {}
void OnComplete(int32_t status, uint64_t data_length) override {
std::move(callback_).Run(base::checked_cast<int>(status));
}
private:
BlobCompleteCallback callback_;
};
} // namespace
// static
void ServiceWorkerLoaderHelpers::SaveResponseHeaders(
const int status_code,
const std::string& status_text,
const base::flat_map<std::string, std::string>& headers,
network::mojom::URLResponseHead* out_head) {
// Build a string instead of using HttpResponseHeaders::AddHeader on
// each header, since AddHeader has O(n^2) performance.
std::string buf(base::StringPrintf("HTTP/1.1 %d %s\r\n", status_code,
status_text.c_str()));
for (const auto& item : headers) {
buf.append(item.first);
buf.append(": ");
buf.append(item.second);
buf.append("\r\n");
}
buf.append("\r\n");
out_head->headers = base::MakeRefCounted<net::HttpResponseHeaders>(
net::HttpUtil::AssembleRawHeaders(buf));
// Populate |out_head|'s MIME type with the value from the HTTP response
// headers.
if (out_head->mime_type.empty()) {
std::string mime_type;
if (out_head->headers->GetMimeType(&mime_type))
out_head->mime_type = mime_type;
}
// Populate |out_head|'s charset with the value from the HTTP response
// headers.
if (out_head->charset.empty()) {
std::string charset;
if (out_head->headers->GetCharset(&charset))
out_head->charset = charset;
}
// Populate |out_head|'s content length with the value from the HTTP response
// headers.
if (out_head->content_length == -1)
out_head->content_length = out_head->headers->GetContentLength();
}
// static
void ServiceWorkerLoaderHelpers::SaveResponseInfo(
const blink::mojom::FetchAPIResponse& response,
network::mojom::URLResponseHead* out_head) {
out_head->was_fetched_via_service_worker = true;
out_head->was_fallback_required_by_service_worker = false;
out_head->url_list_via_service_worker = response.url_list;
out_head->response_type = response.response_type;
if (response.mime_type.has_value()) {
std::string charset;
bool had_charset = false;
// The mime type set on |response| may have a charset included. The
// loading stack, however, expects the charset to already have been
// stripped. Parse out the mime type essence without any charset and
// store the result on |out_head|.
net::HttpUtil::ParseContentType(response.mime_type.value(),
&out_head->mime_type, &charset,
&had_charset, nullptr);
}
out_head->response_time = response.response_time;
out_head->service_worker_response_source = response.response_source;
if (response.cache_storage_cache_name)
out_head->cache_storage_cache_name = *(response.cache_storage_cache_name);
else
out_head->cache_storage_cache_name.clear();
out_head->cors_exposed_header_names = response.cors_exposed_header_names;
out_head->did_service_worker_navigation_preload = false;
out_head->parsed_headers = mojo::Clone(response.parsed_headers);
out_head->connection_info = response.connection_info;
out_head->alpn_negotiated_protocol = response.alpn_negotiated_protocol;
out_head->was_fetched_via_spdy = response.was_fetched_via_spdy;
out_head->has_range_requested = response.has_range_requested;
}
// static
base::Optional<net::RedirectInfo>
ServiceWorkerLoaderHelpers::ComputeRedirectInfo(
const network::ResourceRequest& original_request,
const network::mojom::URLResponseHead& response_head) {
std::string new_location;
if (!response_head.headers->IsRedirect(&new_location))
return base::nullopt;
// If the request is a MAIN_FRAME request, the first-party URL gets
// updated on redirects.
const net::RedirectInfo::FirstPartyURLPolicy first_party_url_policy =
original_request.resource_type ==
static_cast<int>(blink::mojom::ResourceType::kMainFrame)
? net::RedirectInfo::FirstPartyURLPolicy::UPDATE_URL_ON_REDIRECT
: net::RedirectInfo::FirstPartyURLPolicy::NEVER_CHANGE_URL;
return net::RedirectInfo::ComputeRedirectInfo(
original_request.method, original_request.url,
original_request.site_for_cookies, first_party_url_policy,
original_request.referrer_policy,
original_request.referrer.GetAsReferrer().spec(),
response_head.headers->response_code(),
original_request.url.Resolve(new_location),
net::RedirectUtil::GetReferrerPolicyHeader(response_head.headers.get()),
false /* insecure_scheme_was_upgraded */);
}
int ServiceWorkerLoaderHelpers::ReadBlobResponseBody(
mojo::Remote<blink::mojom::Blob>* blob,
uint64_t blob_size,
base::OnceCallback<void(int)> on_blob_read_complete,
mojo::ScopedDataPipeConsumerHandle* handle_out) {
MojoCreateDataPipeOptions options;
options.struct_size = sizeof(MojoCreateDataPipeOptions);
options.flags = MOJO_CREATE_DATA_PIPE_FLAG_NONE;
options.element_num_bytes = 1;
options.capacity_num_bytes = blink::BlobUtils::GetDataPipeCapacity(blob_size);
mojo::ScopedDataPipeProducerHandle producer_handle;
MojoResult rv = mojo::CreateDataPipe(&options, &producer_handle, handle_out);
if (rv != MOJO_RESULT_OK)
return net::ERR_FAILED;
mojo::PendingRemote<blink::mojom::BlobReaderClient> blob_reader_client;
mojo::MakeSelfOwnedReceiver(
std::make_unique<BlobCompleteCaller>(std::move(on_blob_read_complete)),
blob_reader_client.InitWithNewPipeAndPassReceiver());
(*blob)->ReadAll(std::move(producer_handle), std::move(blob_reader_client));
return net::OK;
}
} // namespace content
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