cef/libcef/browser/net/throttle_handler.cc

118 lines
4.4 KiB
C++

// Copyright 2020 The Chromium Embedded Framework 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 "libcef/browser/net/throttle_handler.h"
#include "libcef/browser/browser_host_base.h"
#include "libcef/browser/browser_info_manager.h"
#include "libcef/browser/frame_host_impl.h"
#include "libcef/common/request_impl.h"
#include "components/navigation_interception/intercept_navigation_throttle.h"
#include "components/navigation_interception/navigation_params.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/navigation_throttle.h"
#include "content/public/browser/page_navigator.h"
namespace throttle {
namespace {
// TODO(cef): We can't currently trust NavigationParams::is_main_frame() because
// it's always set to true in
// InterceptNavigationThrottle::CheckIfShouldIgnoreNavigation. Remove the
// |is_main_frame| argument once this problem is fixed.
bool NavigationOnUIThread(
bool is_main_frame,
int64_t frame_id,
int64_t parent_frame_id,
int frame_tree_node_id,
content::WebContents* source,
const navigation_interception::NavigationParams& params) {
CEF_REQUIRE_UIT();
content::OpenURLParams open_params(
params.url(), params.referrer(), WindowOpenDisposition::CURRENT_TAB,
params.transition_type(), params.is_renderer_initiated());
open_params.user_gesture = params.has_user_gesture();
open_params.initiator_origin = params.initiator_origin();
CefRefPtr<CefBrowserHostBase> browser;
if (!CefBrowserInfoManager::GetInstance()->MaybeAllowNavigation(
source->GetMainFrame(), open_params, browser)) {
// Cancel the navigation.
return true;
}
bool ignore_navigation = false;
if (browser) {
if (auto client = browser->GetClient()) {
if (auto handler = client->GetRequestHandler()) {
CefRefPtr<CefFrame> frame;
if (is_main_frame) {
frame = browser->GetMainFrame();
} else if (frame_id >= 0) {
frame = browser->GetFrame(frame_id);
}
if (!frame && frame_tree_node_id >= 0) {
frame = browser->GetFrameForFrameTreeNode(frame_tree_node_id);
}
if (!frame) {
// Create a temporary frame object for navigation of sub-frames that
// don't yet exist.
frame = browser->browser_info()->CreateTempSubFrame(parent_frame_id);
}
CefRefPtr<CefRequestImpl> request = new CefRequestImpl();
request->Set(params, is_main_frame);
request->SetReadOnly(true);
// Initiating a new navigation in OnBeforeBrowse will delete the
// InterceptNavigationThrottle that currently owns this callback,
// resulting in a crash. Use the lock to prevent that.
auto navigation_lock = browser->browser_info()->CreateNavigationLock();
ignore_navigation = handler->OnBeforeBrowse(
browser.get(), frame, request.get(), params.has_user_gesture(),
params.is_redirect());
}
}
}
return ignore_navigation;
}
} // namespace
void CreateThrottlesForNavigation(content::NavigationHandle* navigation_handle,
NavigationThrottleList& throttles) {
CEF_REQUIRE_UIT();
const bool is_main_frame = navigation_handle->IsInMainFrame();
// Identify the RenderFrameHost that originated the navigation.
const int64_t parent_frame_id =
!is_main_frame
? CefFrameHostImpl::MakeFrameId(navigation_handle->GetParentFrame())
: CefFrameHostImpl::kInvalidFrameId;
const int64_t frame_id = !is_main_frame && navigation_handle->HasCommitted()
? CefFrameHostImpl::MakeFrameId(
navigation_handle->GetRenderFrameHost())
: CefFrameHostImpl::kInvalidFrameId;
// Must use SynchronyMode::kSync to ensure that OnBeforeBrowse is always
// called before OnBeforeResourceLoad.
std::unique_ptr<content::NavigationThrottle> throttle =
std::make_unique<navigation_interception::InterceptNavigationThrottle>(
navigation_handle,
base::BindRepeating(&NavigationOnUIThread, is_main_frame, frame_id,
parent_frame_id,
navigation_handle->GetFrameTreeNodeId()),
navigation_interception::SynchronyMode::kSync);
throttles.push_back(std::move(throttle));
}
} // namespace throttle