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cef/libcef/renderer/render_manager.cc

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// Copyright 2015 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/renderer/render_manager.h"
#include <tuple>
#include "build/build_config.h"
// Enable deprecation warnings on Windows. See http://crbug.com/585142.
#if BUILDFLAG(IS_WIN)
#if defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic error "-Wdeprecated-declarations"
#else
#pragma warning(push)
#pragma warning(default : 4996)
#endif
#endif
#include "libcef/common/app_manager.h"
#include "libcef/common/cef_switches.h"
#include "libcef/common/net/scheme_info.h"
#include "libcef/common/values_impl.h"
#include "libcef/renderer/blink_glue.h"
#include "libcef/renderer/browser_impl.h"
#include "libcef/renderer/render_frame_observer.h"
#include "libcef/renderer/thread_util.h"
#include "libcef/renderer/v8_impl.h"
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "cef/libcef/common/mojom/cef.mojom.h"
#include "content/public/common/content_switches.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_thread.h"
#include "content/public/renderer/render_view.h"
#include "extensions/common/switches.h"
#include "mojo/public/cpp/bindings/binder_map.h"
#include "services/network/public/mojom/cors_origin_pattern.mojom.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/web/web_frame.h"
#include "third_party/blink/public/web/web_security_policy.h"
#include "third_party/blink/public/web/web_view.h"
#include "third_party/blink/public/web/web_view_observer.h"
namespace {
CefRenderManager* g_manager = nullptr;
} // namespace
// Placeholder object for guest views.
class CefGuestView : public blink::WebViewObserver {
public:
CefGuestView(CefRenderManager* manager,
content::RenderView* render_view,
bool is_windowless)
: blink::WebViewObserver(render_view->GetWebView()),
manager_(manager),
is_windowless_(is_windowless) {}
bool is_windowless() const { return is_windowless_; }
private:
// RenderViewObserver methods.
void OnDestruct() override { manager_->OnGuestViewDestroyed(this); }
CefRenderManager* const manager_;
const bool is_windowless_;
};
CefRenderManager::CefRenderManager() {
DCHECK(!g_manager);
g_manager = this;
}
CefRenderManager::~CefRenderManager() {
g_manager = nullptr;
}
// static
CefRenderManager* CefRenderManager::Get() {
CEF_REQUIRE_RT_RETURN(nullptr);
return g_manager;
}
void CefRenderManager::RenderThreadConnected() {
// Retrieve the new render thread information synchronously.
auto params = cef::mojom::NewRenderThreadInfo::New();
GetBrowserManager()->GetNewRenderThreadInfo(&params);
// Cross-origin entries need to be added after WebKit is initialized.
if (params->cross_origin_whitelist_entries) {
cross_origin_whitelist_entries_.swap(
*params->cross_origin_whitelist_entries);
}
WebKitInitialized();
}
void CefRenderManager::RenderFrameCreated(
content::RenderFrame* render_frame,
CefRenderFrameObserver* render_frame_observer,
bool& browser_created,
absl::optional<bool>& is_windowless) {
auto browser = MaybeCreateBrowser(render_frame->GetRenderView(), render_frame,
&browser_created, &is_windowless);
if (browser) {
// Attach the frame to the observer for message routing purposes.
render_frame_observer->AttachFrame(
browser->GetWebFrameImpl(render_frame->GetWebFrame()).get());
}
}
void CefRenderManager::WebViewCreated(blink::WebView* web_view,
bool& browser_created,
absl::optional<bool>& is_windowless) {
auto render_view = content::RenderView::FromWebView(web_view);
CHECK(render_view);
content::RenderFrame* render_frame = nullptr;
if (web_view->MainFrame()->IsWebLocalFrame()) {
render_frame = content::RenderFrame::FromWebFrame(
web_view->MainFrame()->ToWebLocalFrame());
}
MaybeCreateBrowser(render_view, render_frame, &browser_created,
&is_windowless);
}
void CefRenderManager::DevToolsAgentAttached() {
++devtools_agent_count_;
}
void CefRenderManager::DevToolsAgentDetached() {
--devtools_agent_count_;
if (devtools_agent_count_ == 0 && uncaught_exception_stack_size_ > 0) {
// When the last DevToolsAgent is detached the stack size is set to 0.
// Restore the user-specified stack size here.
CefV8SetUncaughtExceptionStackSize(uncaught_exception_stack_size_);
}
}
void CefRenderManager::ExposeInterfacesToBrowser(mojo::BinderMap* binders) {
auto task_runner = base::SequencedTaskRunnerHandle::Get();
binders->Add(
base::BindRepeating(
[](CefRenderManager* render_manager,
mojo::PendingReceiver<cef::mojom::RenderManager> receiver) {
render_manager->BindReceiver(std::move(receiver));
},
base::Unretained(this)),
task_runner);
}
CefRefPtr<CefBrowserImpl> CefRenderManager::GetBrowserForView(
content::RenderView* view) {
BrowserMap::const_iterator it = browsers_.find(view);
if (it != browsers_.end())
return it->second;
return nullptr;
}
CefRefPtr<CefBrowserImpl> CefRenderManager::GetBrowserForMainFrame(
blink::WebFrame* frame) {
BrowserMap::const_iterator it = browsers_.begin();
for (; it != browsers_.end(); ++it) {
auto web_view = it->second->GetWebView();
if (web_view && web_view->MainFrame() == frame) {
return it->second;
}
}
return nullptr;
}
mojo::Remote<cef::mojom::BrowserManager>&
CefRenderManager::GetBrowserManager() {
if (!browser_manager_) {
content::RenderThread::Get()->BindHostReceiver(
browser_manager_.BindNewPipeAndPassReceiver());
}
return browser_manager_;
}
// static
bool CefRenderManager::IsExtensionProcess() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(
extensions::switches::kExtensionProcess);
}
// static
bool CefRenderManager::IsPdfProcess() {
return base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kPdfRenderer);
}
void CefRenderManager::BindReceiver(
mojo::PendingReceiver<cef::mojom::RenderManager> receiver) {
receivers_.Add(this, std::move(receiver));
}
void CefRenderManager::ModifyCrossOriginWhitelistEntry(
bool add,
cef::mojom::CrossOriginWhiteListEntryPtr entry) {
GURL gurl = GURL(entry->source_origin);
if (add) {
blink::WebSecurityPolicy::AddOriginAccessAllowListEntry(
gurl, blink::WebString::FromUTF8(entry->target_protocol),
blink::WebString::FromUTF8(entry->target_domain),
/*destination_port=*/0,
entry->allow_target_subdomains
? network::mojom::CorsDomainMatchMode::kAllowSubdomains
: network::mojom::CorsDomainMatchMode::kDisallowSubdomains,
network::mojom::CorsPortMatchMode::kAllowAnyPort,
network::mojom::CorsOriginAccessMatchPriority::kDefaultPriority);
} else {
blink::WebSecurityPolicy::ClearOriginAccessListForOrigin(gurl);
}
}
void CefRenderManager::ClearCrossOriginWhitelist() {
blink::WebSecurityPolicy::ClearOriginAccessList();
}
void CefRenderManager::WebKitInitialized() {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
// Create global objects associated with the default Isolate.
CefV8IsolateCreated();
const CefAppManager::SchemeInfoList* schemes =
CefAppManager::Get()->GetCustomSchemes();
if (!schemes->empty()) {
// Register the custom schemes. Some attributes are excluded here because
// they use url/url_util.h APIs instead.
CefAppManager::SchemeInfoList::const_iterator it = schemes->begin();
for (; it != schemes->end(); ++it) {
const CefSchemeInfo& info = *it;
const blink::WebString& scheme =
blink::WebString::FromUTF8(info.scheme_name);
if (info.is_display_isolated)
blink::WebSecurityPolicy::RegisterURLSchemeAsDisplayIsolated(scheme);
if (info.is_fetch_enabled)
blink_glue::RegisterURLSchemeAsSupportingFetchAPI(scheme);
}
}
if (!cross_origin_whitelist_entries_.empty()) {
// Add the cross-origin white list entries.
for (auto& entry : cross_origin_whitelist_entries_) {
ModifyCrossOriginWhitelistEntry(/*add=*/true, std::move(entry));
}
cross_origin_whitelist_entries_.clear();
}
// The number of stack trace frames to capture for uncaught exceptions.
if (command_line->HasSwitch(switches::kUncaughtExceptionStackSize)) {
int uncaught_exception_stack_size = 0;
base::StringToInt(command_line->GetSwitchValueASCII(
switches::kUncaughtExceptionStackSize),
&uncaught_exception_stack_size);
if (uncaught_exception_stack_size > 0) {
uncaught_exception_stack_size_ = uncaught_exception_stack_size;
CefV8SetUncaughtExceptionStackSize(uncaught_exception_stack_size_);
}
}
// Notify the render process handler.
CefRefPtr<CefApp> application = CefAppManager::Get()->GetApplication();
if (application.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
application->GetRenderProcessHandler();
if (handler.get())
handler->OnWebKitInitialized();
}
}
CefRefPtr<CefBrowserImpl> CefRenderManager::MaybeCreateBrowser(
content::RenderView* render_view,
content::RenderFrame* render_frame,
bool* browser_created,
absl::optional<bool>* is_windowless) {
if (browser_created)
*browser_created = false;
if (!render_view || !render_frame)
return nullptr;
// Don't create another browser or guest view object if one already exists for
// the view.
auto browser = GetBrowserForView(render_view);
if (browser) {
if (is_windowless) {
*is_windowless = browser->is_windowless();
}
return browser;
}
auto guest_view = GetGuestViewForView(render_view);
if (guest_view) {
if (is_windowless) {
*is_windowless = guest_view->is_windowless();
}
return nullptr;
}
const bool is_pdf = IsPdfProcess();
auto params = cef::mojom::NewBrowserInfo::New();
if (!is_pdf) {
// Retrieve browser information synchronously.
GetBrowserManager()->GetNewBrowserInfo(render_frame->GetRoutingID(),
&params);
if (params->browser_id == 0) {
// The popup may have been canceled during creation.
return nullptr;
}
}
if (is_windowless) {
*is_windowless = params->is_windowless;
}
if (is_pdf || params->is_guest_view || params->browser_id < 0) {
// Don't create a CefBrowser for a PDF renderer, guest view, or if the new
// browser info response has timed out.
guest_views_.insert(std::make_pair(
render_view, std::make_unique<CefGuestView>(this, render_view,
params->is_windowless)));
return nullptr;
}
browser = new CefBrowserImpl(render_view, params->browser_id,
params->is_popup, params->is_windowless);
browsers_.insert(std::make_pair(render_view, browser));
// Notify the render process handler.
CefRefPtr<CefApp> application = CefAppManager::Get()->GetApplication();
if (application.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
application->GetRenderProcessHandler();
if (handler.get()) {
CefRefPtr<CefDictionaryValueImpl> dictValuePtr;
if (params->extra_info) {
auto& dict_value = base::Value::AsDictionaryValue(*params->extra_info);
dictValuePtr = new CefDictionaryValueImpl(
const_cast<base::DictionaryValue*>(&dict_value),
/*will_delete=*/false, /*read_only=*/true);
}
handler->OnBrowserCreated(browser.get(), dictValuePtr.get());
if (dictValuePtr)
std::ignore = dictValuePtr->Detach(nullptr);
}
}
if (browser_created)
*browser_created = true;
return browser;
}
void CefRenderManager::OnBrowserDestroyed(CefBrowserImpl* browser) {
BrowserMap::iterator it = browsers_.begin();
for (; it != browsers_.end(); ++it) {
if (it->second.get() == browser) {
browsers_.erase(it);
return;
}
}
// No browser was found in the map.
NOTREACHED();
}
CefGuestView* CefRenderManager::GetGuestViewForView(content::RenderView* view) {
CEF_REQUIRE_RT_RETURN(nullptr);
GuestViewMap::const_iterator it = guest_views_.find(view);
if (it != guest_views_.end())
return it->second.get();
return nullptr;
}
void CefRenderManager::OnGuestViewDestroyed(CefGuestView* guest_view) {
GuestViewMap::iterator it = guest_views_.begin();
for (; it != guest_views_.end(); ++it) {
if (it->second.get() == guest_view) {
guest_views_.erase(it);
return;
}
}
// No guest view was found in the map.
NOTREACHED();
}
// Enable deprecation warnings on Windows. See http://crbug.com/585142.
#if BUILDFLAG(IS_WIN)
#if defined(__clang__)
#pragma GCC diagnostic pop
#else
#pragma warning(pop)
#endif
#endif
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