2022-07-07 12:01:24 +02:00
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// Copyright 2022 The Chromium Embedded Framework Authors. Portions copyright
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// 2016 The Chromium Authors. All rights reserved. Use of this source code is
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// governed by a BSD-style license that can be found in the LICENSE file.
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#include "libcef/browser/permission_prompt.h"
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#include "libcef/browser/browser_host_base.h"
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#include "libcef/features/runtime.h"
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#include "base/logging.h"
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#include "base/memory/weak_ptr.h"
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#include "base/notreached.h"
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#include "chrome/browser/ui/permission_bubble/permission_prompt.h"
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namespace permission_prompt {
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namespace {
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uint64_t g_next_prompt_id = 0;
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using DelegateCallback =
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base::OnceCallback<void(cef_permission_request_result_t)>;
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class CefPermissionPromptCallbackImpl : public CefPermissionPromptCallback {
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public:
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using CallbackType = base::OnceCallback<void(cef_permission_request_result_t,
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bool /*notify_delegate*/)>;
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explicit CefPermissionPromptCallbackImpl(CallbackType&& callback)
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: callback_(std::move(callback)) {}
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CefPermissionPromptCallbackImpl(const CefPermissionPromptCallbackImpl&) =
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delete;
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CefPermissionPromptCallbackImpl& operator=(
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const CefPermissionPromptCallbackImpl&) = delete;
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// Don't need to execute the callback in this destructor because this object
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// will always be kept alive until after the CefPermissionPrompt is destroyed,
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// and that object will disconnect/execute the callback in its destructor.
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~CefPermissionPromptCallbackImpl() override = default;
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void Continue(cef_permission_request_result_t result) override {
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if (CEF_CURRENTLY_ON_UIT()) {
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if (!callback_.is_null()) {
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auto callback = base::BindOnce(std::move(callback_), result,
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/*notify_delegate=*/true);
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if (safe_to_run_sync_) {
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std::move(callback).Run();
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} else {
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CEF_POST_TASK(CEF_UIT, std::move(callback));
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}
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}
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} else {
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CEF_POST_TASK(CEF_UIT,
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base::BindOnce(&CefPermissionPromptCallbackImpl::Continue,
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this, result));
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}
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}
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[[nodiscard]] CallbackType Disconnect() { return std::move(callback_); }
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bool IsDisconnected() const { return callback_.is_null(); }
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void MarkSafeToRunSync() { safe_to_run_sync_ = true; }
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private:
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// Callback execution from inside CreatePermissionPromptImpl must be async,
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// otherwise PermissionRequestManager state will be incorrect.
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bool safe_to_run_sync_ = false;
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CallbackType callback_;
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IMPLEMENT_REFCOUNTING(CefPermissionPromptCallbackImpl);
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};
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// Implementation based on PermissionPromptAndroid.
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class CefPermissionPrompt : public permissions::PermissionPrompt {
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public:
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explicit CefPermissionPrompt(Delegate* delegate) : delegate_(delegate) {
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DCHECK(delegate_);
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}
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CefPermissionPrompt(const CefPermissionPrompt&) = delete;
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CefPermissionPrompt& operator=(const CefPermissionPrompt&) = delete;
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// Expect to be destroyed (and the UI needs to go) when:
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// 1. A navigation happens, tab/webcontents is being closed; with the current
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// GetTabSwitchingBehavior() implementation, this instance survives the tab
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// being backgrounded.
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// 2. The permission request is resolved (accept, deny, dismiss).
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// 3. A higher priority request comes in.
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~CefPermissionPrompt() override {
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CEF_REQUIRE_UIT();
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if (callback_) {
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// If the callback is non-null at this point then we still need to execute
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// it in order to notify the client.
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auto callback = callback_->Disconnect();
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if (!callback.is_null()) {
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std::move(callback).Run(CEF_PERMISSION_RESULT_IGNORE,
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/*notify_delegate=*/false);
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}
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}
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}
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// Used to associate the client callback when OnShowPermissionPrompt is
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// handled.
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void AttachClientCallback(
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CefRefPtr<CefPermissionPromptCallbackImpl> callback) {
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DCHECK(callback);
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callback_ = callback;
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callback_->MarkSafeToRunSync();
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}
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// Used to tie Delegate access to this object's lifespan.
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2022-11-15 18:50:53 +01:00
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DelegateCallback MakeDelegateCallback() {
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2022-07-07 12:01:24 +02:00
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return base::BindOnce(&CefPermissionPrompt::NotifyDelegate,
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weak_ptr_factory_.GetWeakPtr());
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}
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// PermissionPrompt methods:
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2022-10-17 19:27:40 +02:00
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bool UpdateAnchor() override { return true; }
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2022-07-07 12:01:24 +02:00
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TabSwitchingBehavior GetTabSwitchingBehavior() override {
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return TabSwitchingBehavior::kKeepPromptAlive;
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}
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permissions::PermissionPromptDisposition GetPromptDisposition()
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const override {
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return permissions::PermissionPromptDisposition::CUSTOM_MODAL_DIALOG;
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}
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private:
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// We don't expose AcceptThisTime() because it's a special case for
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// Geolocation (see DCHECK in PrefProvider::SetWebsiteSetting).
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void NotifyDelegate(cef_permission_request_result_t result) {
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switch (result) {
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case CEF_PERMISSION_RESULT_ACCEPT:
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delegate_->Accept();
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break;
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case CEF_PERMISSION_RESULT_DENY:
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delegate_->Deny();
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break;
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case CEF_PERMISSION_RESULT_DISMISS:
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delegate_->Dismiss();
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break;
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case CEF_PERMISSION_RESULT_IGNORE:
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delegate_->Ignore();
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break;
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}
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}
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// |delegate_| is the PermissionRequestManager, which owns this object.
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const raw_ptr<Delegate> delegate_;
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CefRefPtr<CefPermissionPromptCallbackImpl> callback_;
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base::WeakPtrFactory<CefPermissionPrompt> weak_ptr_factory_{this};
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};
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// |notify_delegate| will be false if called from the CefPermissionPrompt
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// destructor.
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void ExecuteResult(CefRefPtr<CefBrowserHostBase> browser,
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uint64_t prompt_id,
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DelegateCallback delegate_callback,
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cef_permission_request_result_t result,
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bool notify_delegate) {
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CEF_REQUIRE_UIT();
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if (auto client = browser->GetClient()) {
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if (auto handler = client->GetPermissionHandler()) {
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handler->OnDismissPermissionPrompt(browser, prompt_id, result);
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}
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}
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if (notify_delegate) {
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// Will be a no-op if this executes after the CefPermissionPrompt was
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// destroyed.
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std::move(delegate_callback).Run(result);
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}
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}
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cef_permission_request_types_t GetCefRequestType(
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permissions::RequestType type) {
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switch (type) {
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case permissions::RequestType::kAccessibilityEvents:
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return CEF_PERMISSION_TYPE_ACCESSIBILITY_EVENTS;
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case permissions::RequestType::kArSession:
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return CEF_PERMISSION_TYPE_AR_SESSION;
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case permissions::RequestType::kCameraPanTiltZoom:
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return CEF_PERMISSION_TYPE_CAMERA_PAN_TILT_ZOOM;
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case permissions::RequestType::kCameraStream:
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return CEF_PERMISSION_TYPE_CAMERA_STREAM;
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case permissions::RequestType::kClipboard:
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return CEF_PERMISSION_TYPE_CLIPBOARD;
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case permissions::RequestType::kDiskQuota:
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return CEF_PERMISSION_TYPE_DISK_QUOTA;
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case permissions::RequestType::kLocalFonts:
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return CEF_PERMISSION_TYPE_LOCAL_FONTS;
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case permissions::RequestType::kGeolocation:
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return CEF_PERMISSION_TYPE_GEOLOCATION;
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case permissions::RequestType::kIdleDetection:
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return CEF_PERMISSION_TYPE_IDLE_DETECTION;
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case permissions::RequestType::kMicStream:
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return CEF_PERMISSION_TYPE_MIC_STREAM;
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case permissions::RequestType::kMidiSysex:
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return CEF_PERMISSION_TYPE_MIDI_SYSEX;
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case permissions::RequestType::kMultipleDownloads:
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return CEF_PERMISSION_TYPE_MULTIPLE_DOWNLOADS;
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case permissions::RequestType::kNotifications:
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return CEF_PERMISSION_TYPE_NOTIFICATIONS;
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#if BUILDFLAG(IS_WIN)
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case permissions::RequestType::kProtectedMediaIdentifier:
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return CEF_PERMISSION_TYPE_PROTECTED_MEDIA_IDENTIFIER;
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#endif
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case permissions::RequestType::kRegisterProtocolHandler:
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return CEF_PERMISSION_TYPE_REGISTER_PROTOCOL_HANDLER;
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case permissions::RequestType::kSecurityAttestation:
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return CEF_PERMISSION_TYPE_SECURITY_ATTESTATION;
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case permissions::RequestType::kStorageAccess:
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return CEF_PERMISSION_TYPE_STORAGE_ACCESS;
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case permissions::RequestType::kU2fApiRequest:
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return CEF_PERMISSION_TYPE_U2F_API_REQUEST;
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case permissions::RequestType::kVrSession:
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return CEF_PERMISSION_TYPE_VR_SESSION;
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2022-10-17 19:27:40 +02:00
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case permissions::RequestType::kWindowManagement:
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return CEF_PERMISSION_TYPE_WINDOW_MANAGEMENT;
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2022-07-07 12:01:24 +02:00
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}
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NOTREACHED();
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return CEF_PERMISSION_TYPE_NONE;
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}
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uint32_t GetRequestedPermissions(
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permissions::PermissionPrompt::Delegate* delegate) {
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uint32_t permissions = CEF_PERMISSION_TYPE_NONE;
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for (const auto* request : delegate->Requests()) {
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permissions |= GetCefRequestType(request->request_type());
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}
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return permissions;
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}
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std::unique_ptr<permissions::PermissionPrompt> CreatePermissionPromptImpl(
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content::WebContents* web_contents,
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permissions::PermissionPrompt::Delegate* delegate,
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bool* default_handling) {
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CEF_REQUIRE_UIT();
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if (auto browser = CefBrowserHostBase::GetBrowserForContents(web_contents)) {
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if (auto client = browser->GetClient()) {
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if (auto handler = client->GetPermissionHandler()) {
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auto permission_prompt =
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std::make_unique<CefPermissionPrompt>(delegate);
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const auto prompt_id = ++g_next_prompt_id;
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auto callback =
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base::BindOnce(&ExecuteResult, browser, prompt_id,
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permission_prompt->MakeDelegateCallback());
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CefRefPtr<CefPermissionPromptCallbackImpl> callbackImpl(
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new CefPermissionPromptCallbackImpl(std::move(callback)));
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bool handled = handler->OnShowPermissionPrompt(
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browser, prompt_id, delegate->GetRequestingOrigin().spec(),
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GetRequestedPermissions(delegate), callbackImpl.get());
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if (callbackImpl->IsDisconnected() || handled) {
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// Callback execution will be async.
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LOG_IF(ERROR, !handled)
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<< "Should return true from OnShowPermissionPrompt when "
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"executing the callback";
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*default_handling = false;
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permission_prompt->AttachClientCallback(callbackImpl);
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return permission_prompt;
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} else {
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// Proceed with default handling. |callback| is discarded without
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// execution.
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callback = callbackImpl->Disconnect();
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}
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}
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}
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}
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if (cef::IsAlloyRuntimeEnabled()) {
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LOG(INFO) << "Implement OnShowPermissionPrompt to override default IGNORE "
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"handling of permission prompts.";
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}
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// Proceed with default handling. This will be IGNORE with the Alloy runtime
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// and default UI prompt with the Chrome runtime.
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*default_handling = true;
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return nullptr;
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}
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} // namespace
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void RegisterCreateCallback() {
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SetCreatePermissionPromptFunction(&CreatePermissionPromptImpl);
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}
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} // namespace permission_prompt
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