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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/guest_view/web_view/controlled_frame_embedder_url_fetcher.h"
#include "base/functional/bind.h"
#include "base/memory/scoped_refptr.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/storage_partition.h"
#include "extensions/browser/extensions_browser_client.h"
#include "net/base/load_flags.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
#include "services/network/public/cpp/simple_url_loader.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
namespace extensions {
ControlledFrameEmbedderURLFetcher::ControlledFrameEmbedderURLFetcher(
int render_process_id,
int render_frame_id,
const GURL& url,
ControlledFrameEmbedderLoadFileCallback callback)
: render_process_id_(render_process_id),
render_frame_id_(render_frame_id),
url_(url),
callback_(std::move(callback)) {}
ControlledFrameEmbedderURLFetcher::~ControlledFrameEmbedderURLFetcher() =
default;
void ControlledFrameEmbedderURLFetcher::Start() {
content::RenderFrameHost* render_frame_host =
content::RenderFrameHost::FromID(render_process_id_, render_frame_id_);
if (!render_frame_host) {
std::move(callback_).Run(false, nullptr);
return;
}
// Get ExtensionBrowserClient instance
mojo::Remote<network::mojom::URLLoaderFactory> factory(
extensions::ExtensionsBrowserClient::Get()
->GetControlledFrameEmbedderURLLoader(
render_frame_host->GetLastCommittedOrigin(),
render_frame_host->GetFrameTreeNodeId(),
render_frame_host->GetBrowserContext()));
net::NetworkTrafficAnnotationTag traffic_annotation =
net::DefineNetworkTrafficAnnotation(
"controlled_frame_content_scripts_download", R"(
semantics {
sender: "Controlled Frame"
description:
"When a Controlled Frame is embedded within an embedder, it needs "
"to fetch the embedder's content scripts from Chromium's network "
"stack for its content scripts injection API."
trigger: "The content script injection API is called."
data: "URL of the script file to be downloaded."
destination: LOCAL
}
policy {
cookies_allowed: NO
setting: "It is not possible to disable this feature from settings."
policy_exception_justification:
"Not Implemented, considered not useful as the request doesn't "
"go to the network."
})");
auto resource_request = std::make_unique<network::ResourceRequest>();
resource_request->url = url_;
resource_request->credentials_mode = network::mojom::CredentialsMode::kOmit;
fetcher_ = network::SimpleURLLoader::Create(std::move(resource_request),
traffic_annotation);
fetcher_->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
factory.get(),
base::BindOnce(&ControlledFrameEmbedderURLFetcher::OnURLLoaderComplete,
weak_ptr_factory_.GetWeakPtr()));
}
void ControlledFrameEmbedderURLFetcher::OnURLLoaderComplete(
std::unique_ptr<std::string> response_body) {
int response_code = 0;
if (fetcher_->ResponseInfo() && fetcher_->ResponseInfo()->headers) {
response_code = fetcher_->ResponseInfo()->headers->response_code();
}
fetcher_.reset();
std::unique_ptr<std::string> data;
if (response_body) {
data = std::move(response_body);
} else {
data = std::make_unique<std::string>();
}
std::move(callback_).Run(response_code == 200, std::move(data));
}
} // namespace extensions
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