104 lines
4.0 KiB
C++
104 lines
4.0 KiB
C++
// Copyright 2020 The Chromium Embedded Framework Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be found
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// in the LICENSE file.
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#include "libcef/browser/net/throttle_handler.h"
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#include "libcef/browser/browser_host_base.h"
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#include "libcef/browser/browser_info_manager.h"
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#include "libcef/browser/frame_host_impl.h"
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#include "libcef/common/frame_util.h"
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#include "libcef/common/request_impl.h"
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#include "components/navigation_interception/intercept_navigation_throttle.h"
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#include "content/public/browser/navigation_handle.h"
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#include "content/public/browser/navigation_throttle.h"
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#include "content/public/browser/page_navigator.h"
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namespace throttle {
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namespace {
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bool NavigationOnUIThread(content::NavigationHandle* navigation_handle) {
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CEF_REQUIRE_UIT();
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const bool is_main_frame = navigation_handle->IsInMainFrame();
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const auto global_id = frame_util::GetGlobalId(navigation_handle);
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// Identify the RenderFrameHost that originated the navigation.
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const auto parent_global_id =
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!is_main_frame ? navigation_handle->GetParentFrame()->GetGlobalId()
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: frame_util::InvalidGlobalId();
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const content::Referrer referrer(navigation_handle->GetReferrer().url,
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navigation_handle->GetReferrer().policy);
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content::OpenURLParams open_params(navigation_handle->GetURL(), referrer,
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WindowOpenDisposition::CURRENT_TAB,
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navigation_handle->GetPageTransition(),
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navigation_handle->IsRendererInitiated());
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open_params.user_gesture = navigation_handle->HasUserGesture();
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open_params.initiator_origin = navigation_handle->GetInitiatorOrigin();
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open_params.is_pdf = navigation_handle->IsPdf();
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CefRefPtr<CefBrowserHostBase> browser;
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if (!CefBrowserInfoManager::GetInstance()->MaybeAllowNavigation(
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navigation_handle->GetWebContents()->GetPrimaryMainFrame(),
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open_params, browser)) {
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// Cancel the navigation.
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return true;
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}
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bool ignore_navigation = false;
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if (browser) {
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if (auto client = browser->GetClient()) {
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if (auto handler = client->GetRequestHandler()) {
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CefRefPtr<CefFrame> frame;
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if (is_main_frame) {
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frame = browser->GetMainFrame();
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} else {
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frame = browser->GetFrameForGlobalId(global_id);
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}
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if (!frame) {
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// Create a temporary frame object for navigation of sub-frames that
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// don't yet exist.
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frame = browser->browser_info()->CreateTempSubFrame(parent_global_id);
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}
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CefRefPtr<CefRequestImpl> request = new CefRequestImpl();
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request->Set(navigation_handle);
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request->SetReadOnly(true);
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// Initiating a new navigation in OnBeforeBrowse will delete the
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// InterceptNavigationThrottle that currently owns this callback,
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// resulting in a crash. Use the lock to prevent that.
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auto navigation_lock = browser->browser_info()->CreateNavigationLock();
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ignore_navigation =
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handler->OnBeforeBrowse(browser.get(), frame, request.get(),
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navigation_handle->HasUserGesture(),
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navigation_handle->WasServerRedirect());
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}
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}
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}
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return ignore_navigation;
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}
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} // namespace
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void CreateThrottlesForNavigation(content::NavigationHandle* navigation_handle,
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NavigationThrottleList& throttles) {
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CEF_REQUIRE_UIT();
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// Must use SynchronyMode::kSync to ensure that OnBeforeBrowse is always
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// called before OnBeforeResourceLoad.
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std::unique_ptr<content::NavigationThrottle> throttle =
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std::make_unique<navigation_interception::InterceptNavigationThrottle>(
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navigation_handle, base::BindRepeating(&NavigationOnUIThread),
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navigation_interception::SynchronyMode::kSync);
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throttles.push_back(std::move(throttle));
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}
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} // namespace throttle
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