| // Copyright 2019 The Chromium 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 "components/exo/wayland/zcr_secure_output.h" |
| |
| #include <secure-output-unstable-v1-server-protocol.h> |
| |
| #include "components/exo/surface.h" |
| #include "components/exo/surface_observer.h" |
| #include "components/exo/wayland/server_util.h" |
| |
| namespace exo { |
| namespace wayland { |
| namespace { |
| |
| // A property key containing a boolean set to true if a security object is |
| // associated with surface object. |
| DEFINE_UI_CLASS_PROPERTY_KEY(bool, kSurfaceHasSecurityKey, false) |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // security_interface: |
| |
| // Implements the security interface to a Surface. The "only visible on secure |
| // output"-state is set to false upon destruction. A window property will be set |
| // during the lifetime of this class to prevent multiple instances from being |
| // created for the same Surface. |
| class Security : public SurfaceObserver { |
| public: |
| explicit Security(Surface* surface) : surface_(surface) { |
| surface_->AddSurfaceObserver(this); |
| surface_->SetProperty(kSurfaceHasSecurityKey, true); |
| } |
| |
| Security(const Security&) = delete; |
| Security& operator=(const Security&) = delete; |
| |
| ~Security() override { |
| if (surface_) { |
| surface_->RemoveSurfaceObserver(this); |
| surface_->SetOnlyVisibleOnSecureOutput(false); |
| surface_->SetProperty(kSurfaceHasSecurityKey, false); |
| } |
| } |
| |
| void OnlyVisibleOnSecureOutput() { |
| if (surface_) |
| surface_->SetOnlyVisibleOnSecureOutput(true); |
| } |
| |
| // Overridden from SurfaceObserver: |
| void OnSurfaceDestroying(Surface* surface) override { |
| surface->RemoveSurfaceObserver(this); |
| surface_ = nullptr; |
| } |
| |
| private: |
| Surface* surface_; |
| }; |
| |
| void security_destroy(wl_client* client, wl_resource* resource) { |
| wl_resource_destroy(resource); |
| } |
| |
| void security_only_visible_on_secure_output(wl_client* client, |
| wl_resource* resource) { |
| GetUserDataAs<Security>(resource)->OnlyVisibleOnSecureOutput(); |
| } |
| |
| const struct zcr_security_v1_interface security_implementation = { |
| security_destroy, security_only_visible_on_secure_output}; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // secure_output_interface: |
| |
| void secure_output_destroy(wl_client* client, wl_resource* resource) { |
| wl_resource_destroy(resource); |
| } |
| |
| void secure_output_get_security(wl_client* client, |
| wl_resource* resource, |
| uint32_t id, |
| wl_resource* surface_resource) { |
| Surface* surface = GetUserDataAs<Surface>(surface_resource); |
| if (surface->GetProperty(kSurfaceHasSecurityKey)) { |
| wl_resource_post_error(resource, ZCR_SECURE_OUTPUT_V1_ERROR_SECURITY_EXISTS, |
| "a security object for that surface already exists"); |
| return; |
| } |
| |
| wl_resource* security_resource = |
| wl_resource_create(client, &zcr_security_v1_interface, 1, id); |
| |
| SetImplementation(security_resource, &security_implementation, |
| std::make_unique<Security>(surface)); |
| } |
| |
| const struct zcr_secure_output_v1_interface secure_output_implementation = { |
| secure_output_destroy, secure_output_get_security}; |
| |
| } // namespace |
| |
| void bind_secure_output(wl_client* client, |
| void* data, |
| uint32_t version, |
| uint32_t id) { |
| wl_resource* resource = |
| wl_resource_create(client, &zcr_secure_output_v1_interface, 1, id); |
| |
| wl_resource_set_implementation(resource, &secure_output_implementation, data, |
| nullptr); |
| } |
| |
| } // namespace wayland |
| } // namespace exo |