// Copyright (c) 2012 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 "cef/libcef/browser/frame_host_impl.h" #include "cef/include/cef_request.h" #include "cef/include/cef_stream.h" #include "cef/include/cef_v8.h" #include "cef/include/test/cef_test_helpers.h" #include "cef/libcef/browser/browser_host_base.h" #include "cef/libcef/browser/net_service/browser_urlrequest_impl.h" #include "cef/libcef/common/frame_util.h" #include "cef/libcef/common/net/url_util.h" #include "cef/libcef/common/process_message_impl.h" #include "cef/libcef/common/process_message_smr_impl.h" #include "cef/libcef/common/request_impl.h" #include "cef/libcef/common/string_util.h" #include "cef/libcef/common/task_runner_impl.h" #include "content/browser/renderer_host/frame_tree_node.h" #include "content/public/browser/render_process_host.h" #include "content/public/browser/render_view_host.h" #include "services/service_manager/public/cpp/interface_provider.h" namespace { void StringVisitCallback(CefRefPtr visitor, base::ReadOnlySharedMemoryRegion response) { string_util::ExecuteWithScopedCefString( std::move(response), base::BindOnce([](CefRefPtr visitor, const CefString& str) { visitor->Visit(str); }, visitor)); } void ViewTextCallback(CefRefPtr frame, base::ReadOnlySharedMemoryRegion response) { if (auto browser = frame->GetBrowser()) { string_util::ExecuteWithScopedCefString( std::move(response), base::BindOnce( [](CefRefPtr browser, const CefString& str) { CefBrowserHostBase::FromBrowser(browser)->ViewText(str); }, browser)); } } using CefFrameHostImplCommand = void (CefFrameHostImpl::*)(); using WebContentsCommand = void (content::WebContents::*)(); void ExecWebContentsCommand(CefFrameHostImpl* fh, CefFrameHostImplCommand fh_func, WebContentsCommand wc_func, const std::string& command) { if (!CEF_CURRENTLY_ON_UIT()) { CEF_POST_TASK(CEF_UIT, base::BindOnce(fh_func, fh)); return; } auto rfh = fh->GetRenderFrameHost(); if (rfh) { auto web_contents = content::WebContents::FromRenderFrameHost(rfh); if (web_contents) { std::invoke(wc_func, web_contents); return; } } fh->SendCommand(command); } #define EXEC_WEBCONTENTS_COMMAND(name) \ ExecWebContentsCommand(this, &CefFrameHostImpl::name, \ &content::WebContents::name, #name); } // namespace CefFrameHostImpl::CefFrameHostImpl( scoped_refptr browser_info, std::optional parent_frame_token) : is_main_frame_(false), browser_info_(browser_info), is_focused_(is_main_frame_), // The main frame always starts focused. parent_frame_token_(std::move(parent_frame_token)) { #if DCHECK_IS_ON() DCHECK(browser_info_); DCHECK_EQ(is_main_frame_, !parent_frame_token_.has_value()); #endif } CefFrameHostImpl::CefFrameHostImpl(scoped_refptr browser_info, content::RenderFrameHost* render_frame_host) : is_main_frame_(render_frame_host->GetParent() == nullptr), frame_token_(render_frame_host->GetGlobalFrameToken()), browser_info_(browser_info), is_focused_(is_main_frame_), // The main frame always starts focused. url_(render_frame_host->GetLastCommittedURL().spec()), name_(render_frame_host->GetFrameName()), parent_frame_token_( is_main_frame_ ? std::optional() : render_frame_host->GetParent()->GetGlobalFrameToken()), render_frame_host_(render_frame_host) { DCHECK(browser_info_); } CefFrameHostImpl::~CefFrameHostImpl() { // Should have been Detached if not temporary. DCHECK(is_temporary() || !browser_info_); DCHECK(!render_frame_host_); } bool CefFrameHostImpl::IsValid() { return !!GetBrowserHostBase(); } void CefFrameHostImpl::Undo() { EXEC_WEBCONTENTS_COMMAND(Undo); } void CefFrameHostImpl::Redo() { EXEC_WEBCONTENTS_COMMAND(Redo); } void CefFrameHostImpl::Cut() { EXEC_WEBCONTENTS_COMMAND(Cut); } void CefFrameHostImpl::Copy() { EXEC_WEBCONTENTS_COMMAND(Copy); } void CefFrameHostImpl::Paste() { EXEC_WEBCONTENTS_COMMAND(Paste); } void CefFrameHostImpl::Delete() { EXEC_WEBCONTENTS_COMMAND(Delete); } void CefFrameHostImpl::SelectAll() { EXEC_WEBCONTENTS_COMMAND(SelectAll); } void CefFrameHostImpl::ViewSource() { SendCommandWithResponse( "GetSource", base::BindOnce(&ViewTextCallback, CefRefPtr(this))); } void CefFrameHostImpl::GetSource(CefRefPtr visitor) { SendCommandWithResponse("GetSource", base::BindOnce(&StringVisitCallback, visitor)); } void CefFrameHostImpl::GetText(CefRefPtr visitor) { SendCommandWithResponse("GetText", base::BindOnce(&StringVisitCallback, visitor)); } void CefFrameHostImpl::LoadRequest(CefRefPtr request) { auto params = cef::mojom::RequestParams::New(); static_cast(request.get())->Get(params); LoadRequest(std::move(params)); } void CefFrameHostImpl::LoadURL(const CefString& url) { LoadURLWithExtras(url, content::Referrer(), kPageTransitionExplicit, std::string()); } void CefFrameHostImpl::ExecuteJavaScript(const CefString& jsCode, const CefString& scriptUrl, int startLine) { SendJavaScript(jsCode, scriptUrl, startLine); } bool CefFrameHostImpl::IsMain() { return is_main_frame_; } bool CefFrameHostImpl::IsFocused() { base::AutoLock lock_scope(state_lock_); return is_focused_; } CefString CefFrameHostImpl::GetName() { base::AutoLock lock_scope(state_lock_); return name_; } CefString CefFrameHostImpl::GetIdentifier() { if (!frame_token_) { return CefString(); } return frame_util::MakeFrameIdentifier(*frame_token_); } CefRefPtr CefFrameHostImpl::GetParent() { if (is_main_frame_) { return nullptr; } content::GlobalRenderFrameHostToken parent_frame_token; { base::AutoLock lock_scope(state_lock_); if (!parent_frame_token_) { return nullptr; } parent_frame_token = *parent_frame_token_; } if (auto browser = GetBrowserHostBase()) { return browser->GetFrameForGlobalToken(parent_frame_token); } return nullptr; } CefString CefFrameHostImpl::GetURL() { base::AutoLock lock_scope(state_lock_); return url_; } CefRefPtr CefFrameHostImpl::GetBrowser() { return GetBrowserHostBase().get(); } CefRefPtr CefFrameHostImpl::GetV8Context() { DCHECK(false) << "GetV8Context cannot be called from the browser process"; return nullptr; } void CefFrameHostImpl::VisitDOM(CefRefPtr visitor) { DCHECK(false) << "VisitDOM cannot be called from the browser process"; } CefRefPtr CefFrameHostImpl::CreateURLRequest( CefRefPtr request, CefRefPtr client) { if (!request || !client) { return nullptr; } if (!CefTaskRunnerImpl::GetCurrentTaskRunner()) { DCHECK(false) << "called on invalid thread"; return nullptr; } auto browser = GetBrowserHostBase(); if (!browser) { return nullptr; } auto request_context = browser->request_context(); CefRefPtr impl = new CefBrowserURLRequest(this, request, client, request_context); if (impl->Start()) { return impl.get(); } return nullptr; } void CefFrameHostImpl::SendProcessMessage( CefProcessId target_process, CefRefPtr message) { DCHECK_EQ(PID_RENDERER, target_process); DCHECK(message && message->IsValid()); if (!message || !message->IsValid()) { return; } if (message->GetArgumentList() != nullptr) { // Invalidate the message object immediately by taking the argument list. auto argument_list = static_cast(message.get())->TakeArgumentList(); SendToRenderFrame( __FUNCTION__, base::BindOnce( [](const CefString& name, base::Value::List argument_list, const RenderFrameType& render_frame) { render_frame->SendMessage(name, std::move(argument_list)); }, message->GetName(), std::move(argument_list))); } else { auto region = static_cast(message.get())->TakeRegion(); SendToRenderFrame( __FUNCTION__, base::BindOnce( [](const CefString& name, base::WritableSharedMemoryRegion region, const RenderFrameType& render_frame) { render_frame->SendSharedMemoryRegion(name, std::move(region)); }, message->GetName(), std::move(region))); } } void CefFrameHostImpl::SetFocused(bool focused) { CEF_REQUIRE_UIT(); base::AutoLock lock_scope(state_lock_); is_focused_ = focused; } void CefFrameHostImpl::RefreshAttributes() { CEF_REQUIRE_UIT(); base::AutoLock lock_scope(state_lock_); if (!render_frame_host_) { return; } url_ = render_frame_host_->GetLastCommittedURL().spec(); // Use the assigned name if it is non-empty. This represents the name property // on the frame DOM element. If the assigned name is empty, revert to the // internal unique name. This matches the logic in render_frame_util::GetName. name_ = render_frame_host_->GetFrameName(); if (name_.empty()) { const auto node = content::FrameTreeNode::GloballyFindByID( render_frame_host_->GetFrameTreeNodeId()); if (node) { name_ = node->unique_name(); } } if (!is_main_frame_) { parent_frame_token_ = render_frame_host_->GetParent()->GetGlobalFrameToken(); } } void CefFrameHostImpl::NotifyMoveOrResizeStarted() { SendToRenderFrame(__FUNCTION__, base::BindOnce([](const RenderFrameType& render_frame) { render_frame->MoveOrResizeStarted(); })); } void CefFrameHostImpl::LoadRequest(cef::mojom::RequestParamsPtr params) { if (!url_util::FixupGURL(params->url)) { return; } SendToRenderFrame(__FUNCTION__, base::BindOnce( [](cef::mojom::RequestParamsPtr params, const RenderFrameType& render_frame) { render_frame->LoadRequest(std::move(params)); }, std::move(params))); auto browser = GetBrowserHostBase(); if (browser) { browser->OnSetFocus(FOCUS_SOURCE_NAVIGATION); } } void CefFrameHostImpl::LoadURLWithExtras(const std::string& url, const content::Referrer& referrer, ui::PageTransition transition, const std::string& extra_headers) { // Any necessary fixup will occur in LoadRequest. GURL gurl = url_util::MakeGURL(url, /*fixup=*/false); if (is_main_frame_) { // Load via the browser using NavigationController. auto browser = GetBrowserHostBase(); if (browser) { content::OpenURLParams params( gurl, referrer, WindowOpenDisposition::CURRENT_TAB, transition, /*is_renderer_initiated=*/false); params.extra_headers = extra_headers; params.user_gesture = false; browser->LoadMainFrameURL(params); } } else { auto params = cef::mojom::RequestParams::New(); params->url = gurl; params->referrer = blink::mojom::Referrer::New(referrer.url, referrer.policy); params->headers = extra_headers; LoadRequest(std::move(params)); } } void CefFrameHostImpl::SendCommand(const std::string& command) { DCHECK(!command.empty()); SendToRenderFrame(__FUNCTION__, base::BindOnce( [](const std::string& command, const RenderFrameType& render_frame) { render_frame->SendCommand(command); }, command)); } void CefFrameHostImpl::SendCommandWithResponse( const std::string& command, cef::mojom::RenderFrame::SendCommandWithResponseCallback response_callback) { DCHECK(!command.empty()); SendToRenderFrame( __FUNCTION__, base::BindOnce( [](const std::string& command, cef::mojom::RenderFrame::SendCommandWithResponseCallback response_callback, const RenderFrameType& render_frame) { render_frame->SendCommandWithResponse(command, std::move(response_callback)); }, command, std::move(response_callback))); } void CefFrameHostImpl::SendJavaScript(const std::u16string& jsCode, const std::string& scriptUrl, int startLine) { if (jsCode.empty()) { return; } if (startLine <= 0) { // A value of 0 is v8::Message::kNoLineNumberInfo in V8. There is code in // V8 that will assert on that value (e.g. V8StackTraceImpl::Frame::Frame // if a JS exception is thrown) so make sure |startLine| > 0. startLine = 1; } SendToRenderFrame( __FUNCTION__, base::BindOnce( [](const std::u16string& jsCode, const std::string& scriptUrl, int startLine, const RenderFrameType& render_frame) { render_frame->SendJavaScript(jsCode, scriptUrl, startLine); }, jsCode, scriptUrl, startLine)); } void CefFrameHostImpl::MaybeSendDidStopLoading() { auto rfh = GetRenderFrameHost(); if (!rfh) { return; } // We only want to notify for the highest-level LocalFrame in this frame's // renderer process subtree. If this frame has a parent in the same process // then the notification will be sent via the parent instead. auto rfh_parent = rfh->GetParent(); if (rfh_parent && rfh_parent->GetProcess() == rfh->GetProcess()) { return; } SendToRenderFrame(__FUNCTION__, base::BindOnce([](const RenderFrameType& render_frame) { render_frame->DidStopLoading(); })); } void CefFrameHostImpl::ExecuteJavaScriptWithUserGestureForTests( const CefString& javascript) { if (!CEF_CURRENTLY_ON_UIT()) { CEF_POST_TASK( CEF_UIT, base::BindOnce( &CefFrameHostImpl::ExecuteJavaScriptWithUserGestureForTests, this, javascript)); return; } content::RenderFrameHost* rfh = GetRenderFrameHost(); if (rfh) { rfh->ExecuteJavaScriptWithUserGestureForTests(javascript, base::NullCallback()); } } content::RenderFrameHost* CefFrameHostImpl::GetRenderFrameHost() const { CEF_REQUIRE_UIT(); return render_frame_host_; } bool CefFrameHostImpl::IsSameFrame(content::RenderFrameHost* frame_host) const { CEF_REQUIRE_UIT(); // Shortcut in case the RFH objects match. if (render_frame_host_ == frame_host) { return true; } // Frame tokens should match even if we're currently detached or the RFH // object has changed. return frame_token_ && *frame_token_ == frame_host->GetGlobalFrameToken(); } bool CefFrameHostImpl::IsDetached() const { return !GetRenderFrameHost(); } bool CefFrameHostImpl::Detach(DetachReason reason) { CEF_REQUIRE_UIT(); if (VLOG_IS_ON(1)) { std::string reason_str; switch (reason) { case DetachReason::RENDER_FRAME_DELETED: reason_str = "RENDER_FRAME_DELETED"; break; case DetachReason::NEW_MAIN_FRAME: reason_str = "NEW_MAIN_FRAME"; break; case DetachReason::BROWSER_DESTROYED: reason_str = "BROWSER_DESTROYED"; break; }; VLOG(1) << GetDebugString() << " detached (reason=" << reason_str << ", is_connected=" << render_frame_.is_bound() << ")"; } // May be called multiple times (e.g. from CefBrowserInfo SetMainFrame and // RemoveFrame). bool first_detach = false; // Should not be called for temporary frames. CHECK(!is_temporary()); { base::AutoLock lock_scope(state_lock_); if (browser_info_) { first_detach = true; browser_info_ = nullptr; } } // In case we never attached, clean up. while (!queued_renderer_actions_.empty()) { queued_renderer_actions_.pop(); } if (render_frame_.is_bound()) { render_frame_->FrameDetached(); } render_frame_.reset(); render_frame_host_ = nullptr; return first_detach; } void CefFrameHostImpl::MaybeReAttach( scoped_refptr browser_info, content::RenderFrameHost* render_frame_host, bool require_detached) { CEF_REQUIRE_UIT(); if (render_frame_.is_bound() && render_frame_host_ == render_frame_host) { // Nothing to do here. return; } // Should not be called for temporary frames. CHECK(!is_temporary()); // If |require_detached| then we expect that Detach() was called previously. CHECK(!require_detached || !render_frame_.is_bound()); if (render_frame_host_) { // Intentionally not clearing |queued_renderer_actions_|, as we may be // changing RFH during initial browser navigation. VLOG(1) << GetDebugString() << " detached (reason=RENDER_FRAME_CHANGED, is_connected=" << render_frame_.is_bound() << ")"; if (render_frame_.is_bound()) { render_frame_->FrameDetached(); } render_frame_.reset(); } // The RFH may change but the frame token should remain the same. CHECK(*frame_token_ == render_frame_host->GetGlobalFrameToken()); { base::AutoLock lock_scope(state_lock_); browser_info_ = browser_info; } render_frame_host_ = render_frame_host; RefreshAttributes(); // We expect a reconnect to be triggered via FrameAttached(). } // This equates to (TT_EXPLICIT | TT_DIRECT_LOAD_FLAG). const ui::PageTransition CefFrameHostImpl::kPageTransitionExplicit = static_cast(ui::PAGE_TRANSITION_TYPED | ui::PAGE_TRANSITION_FROM_ADDRESS_BAR); scoped_refptr CefFrameHostImpl::GetBrowserInfo() const { base::AutoLock lock_scope(state_lock_); return browser_info_; } CefRefPtr CefFrameHostImpl::GetBrowserHostBase() const { if (auto browser_info = GetBrowserInfo()) { return browser_info->browser(); } return nullptr; } void CefFrameHostImpl::SendToRenderFrame(const std::string& function_name, RenderFrameAction action) { if (!CEF_CURRENTLY_ON_UIT()) { CEF_POST_TASK(CEF_UIT, base::BindOnce(&CefFrameHostImpl::SendToRenderFrame, this, function_name, std::move(action))); return; } if (is_temporary()) { LOG(WARNING) << function_name << " sent to temporary subframe will be ignored."; return; } else if (!render_frame_host_) { // We've been detached. LOG(WARNING) << function_name << " sent to detached " << GetDebugString() << " will be ignored"; return; } if (!render_frame_.is_bound()) { // Queue actions until we're notified by the renderer that it's ready to // handle them. queued_renderer_actions_.emplace(function_name, std::move(action)); return; } std::move(action).Run(render_frame_); } void CefFrameHostImpl::OnRenderFrameDisconnect() { CEF_REQUIRE_UIT(); // Reconnect, if any, will be triggered via FrameAttached(). render_frame_.reset(); } void CefFrameHostImpl::SendMessage(const std::string& name, base::Value::List arguments) { if (auto browser = GetBrowserHostBase()) { if (auto client = browser->GetClient()) { CefRefPtr message( new CefProcessMessageImpl(name, std::move(arguments), /*read_only=*/true)); browser->GetClient()->OnProcessMessageReceived( browser.get(), this, PID_RENDERER, message.get()); } } } void CefFrameHostImpl::SendSharedMemoryRegion( const std::string& name, base::WritableSharedMemoryRegion region) { if (auto browser = GetBrowserHostBase()) { if (auto client = browser->GetClient()) { CefRefPtr message( new CefProcessMessageSMRImpl(name, std::move(region))); browser->GetClient()->OnProcessMessageReceived(browser.get(), this, PID_RENDERER, message); } } } void CefFrameHostImpl::FrameAttached( mojo::PendingRemote render_frame_remote, bool reattached) { CEF_REQUIRE_UIT(); CHECK(render_frame_remote); auto browser_info = GetBrowserInfo(); if (!browser_info) { // Already Detached. return; } VLOG(1) << GetDebugString() << " " << (reattached ? "re" : "") << "connected"; render_frame_.Bind(std::move(render_frame_remote)); render_frame_.set_disconnect_handler( base::BindOnce(&CefFrameHostImpl::OnRenderFrameDisconnect, this)); // Notify the renderer process that it can start sending messages. render_frame_->FrameAttachedAck(/*allow=*/true); while (!queued_renderer_actions_.empty()) { std::move(queued_renderer_actions_.front().second).Run(render_frame_); queued_renderer_actions_.pop(); } browser_info->MaybeExecuteFrameNotification(base::BindOnce( [](CefRefPtr self, bool reattached, CefRefPtr handler) { if (auto browser = self->GetBrowserHostBase()) { handler->OnFrameAttached(browser, self, reattached); } }, CefRefPtr(this), reattached)); } void CefFrameHostImpl::UpdateDraggableRegions( std::optional> regions) { auto browser = GetBrowserHostBase(); if (!browser) { return; } std::vector draggable_regions; if (regions) { draggable_regions.reserve(regions->size()); for (const auto& region : *regions) { const auto& rect = region->bounds; const CefRect bounds(rect.x(), rect.y(), rect.width(), rect.height()); draggable_regions.emplace_back(bounds, region->draggable); } } // Delegate to BrowserInfo so that current state is maintained with // cross-origin navigation. browser->browser_info()->MaybeNotifyDraggableRegionsChanged( browser, this, std::move(draggable_regions)); } std::string CefFrameHostImpl::GetDebugString() const { return "frame " + (frame_token_ ? frame_util::GetFrameDebugString(*frame_token_) : "(null)") + (is_main_frame_ ? " (main)" : " (sub)"); } void CefExecuteJavaScriptWithUserGestureForTests(CefRefPtr frame, const CefString& javascript) { CefFrameHostImpl* impl = static_cast(frame.get()); if (impl) { impl->ExecuteJavaScriptWithUserGestureForTests(javascript); } }