content/common/frame.mojom

// Copyright 2014 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.

module content.mojom;

import "content/common/document_scoped_interface_bundle.mojom";
import "content/common/frame_messages.mojom";
import "content/common/native_types.mojom";
import "content/common/navigation_client.mojom";
import "content/common/navigation_params.mojom";
import "content/public/common/resource_type.mojom";
import "content/public/common/resource_load_info.mojom";
import "content/public/common/transferrable_url_loader.mojom";
import "content/public/common/window_container_type.mojom";
import "mojo/public/mojom/base/string16.mojom";
import "mojo/public/mojom/base/unguessable_token.mojom";
import "mojo/public/mojom/base/values.mojom";
import "services/network/public/mojom/url_response_head.mojom";
import "services/network/public/mojom/url_loader.mojom";
import "services/network/public/mojom/url_loader_factory.mojom";
import "services/service_manager/public/mojom/interface_provider.mojom";
import "services/viz/public/mojom/compositing/surface_id.mojom";
import "third_party/blink/public/mojom/blob/blob_url_store.mojom";
import "third_party/blink/public/mojom/commit_result/commit_result.mojom";
import "third_party/blink/public/mojom/devtools/console_message.mojom";
import "third_party/blink/public/mojom/feature_policy/feature_policy.mojom";
import "third_party/blink/public/mojom/frame/lifecycle.mojom";
import "third_party/blink/public/mojom/frame/navigation_initiator.mojom";
import "third_party/blink/public/mojom/messaging/transferable_message.mojom";
import "third_party/blink/public/mojom/loader/url_loader_factory_bundle.mojom";
import "third_party/blink/public/mojom/messaging/transferable_message.mojom";
import "third_party/blink/public/mojom/portal/portal.mojom";
import "third_party/blink/public/mojom/referrer.mojom";
import "third_party/blink/public/mojom/service_worker/controller_service_worker.mojom";
import "third_party/blink/public/mojom/service_worker/service_worker_provider.mojom";
import "third_party/blink/public/mojom/devtools/devtools_agent.mojom";
import "third_party/blink/public/mojom/portal/portal.mojom";
import "third_party/blink/public/mojom/window_features/window_features.mojom";
import "ui/base/mojom/window_open_disposition.mojom";
import "url/mojom/url.mojom";
import "url/mojom/origin.mojom";
import "ui/gfx/geometry/mojom/geometry.mojom";

// The name of the InterfaceProviderSpec in service manifests used by the
// frame tree to expose frame-specific interfaces between renderer and browser.
const string kNavigation_FrameSpec = "navigation:frame";

// Implemented by the frame provider (e.g. renderer processes).
interface Frame {
  GetInterfaceProvider(service_manager.mojom.InterfaceProvider& interfaces);
  GetCanonicalUrlForSharing() => (url.mojom.Url? canonical_url);

  // Causes all new subresource requests to be blocked (not being started) until
  // ResumeBlockedRequests is called.
  BlockRequests();

  // Resumes blocked requests.
  // It is safe to call this without calling BlockRequests.
  ResumeBlockedRequests();

  // Cancels blocked requests. BlockRequests must have been called before.
  CancelBlockedRequests();

  // Set the lifecycle state.
  SetLifecycleState(blink.mojom.FrameLifecycleState state);

  // Samsung Galaxy Note-specific "smart clip" stylus text getter.
  // Extracts the data at the given rect.
  [EnableIf=is_android]
  ExtractSmartClipData(gfx.mojom.Rect rect)
      => (mojo_base.mojom.String16 text, mojo_base.mojom.String16 html,
              gfx.mojom.Rect clip_rect);
};

// Implemented by the frame provider and currently must be associated with the
// legacy IPC channel.
// KEEP THE COMMIT FUNCTIONS IN SYNC in content/common/navigation_client.mojom.
// These will eventually be removed from FrameNavigationControl.
interface FrameNavigationControl {
  // Tells the renderer that a navigation is ready to commit.
  //
  // The renderer should bind the |url_loader_client_endpoints| to an
  // URLLoaderClient implementation to continue loading the document that will
  // be the result of the committed navigation.
  //
  // Note: |url_loader_client_endpoints| will be empty iff the navigation URL
  // wasn't handled by the network stack (i.e. about:blank, ...)
  //
  // Note: |response_body| is only used when NavigationImmediateResponseBody is
  // enabled. It contains the datapipe used to read the response body.
  //
  // When the Network Service is enabled, |subresource_loader_factories| may
  // also be provided by the browser as a a means for the renderer to load
  // subresources where applicable.
  //
  // |controller_service_worker_info| may also be provided by the browser if the
  // frame that is being navigated is supposed to be controlled by a Service
  // Worker.
  // |provider_info| may also be provided if the browser has created a
  // ServiceWorkerProviderHost for this navigation.
  // |prefetch_loader_factory| is populated only when Network Service is
  // enabled. The pointer is used to start a prefetch loading via the browser
  // process.
  //
  // For automation driver-initiated navigations over the devtools protocol,
  // |devtools_navigation_token_| is used to tag the navigation. This navigation
  // token is then sent into the renderer and lands on the DocumentLoader. That
  // way subsequent Blink-level frame lifecycle events can be associated with
  // the concrete navigation.
  // - The value should not be sent back to the browser.
  // - The value on DocumentLoader may be generated in the renderer in some
  // cases, and thus shouldn't be trusted.
  // TODO(crbug.com/783506): Replace devtools navigation token with the generic
  // navigation token that can be passed from renderer to the browser.
  CommitNavigation(
      CommonNavigationParams common_params,
      CommitNavigationParams request_params,
      network.mojom.URLResponseHead response_head,
      handle<data_pipe_consumer>? response_body,
      network.mojom.URLLoaderClientEndpoints? url_loader_client_endpoints,
      blink.mojom.URLLoaderFactoryBundle? subresource_loader_factories,
      array<TransferrableURLLoader>? subresource_overrides,
      blink.mojom.ControllerServiceWorkerInfo? controller_service_worker_info,
      blink.mojom.ServiceWorkerProviderInfoForClient? provider_info,
      pending_remote<network.mojom.URLLoaderFactory>? prefetch_loader_factory,
      mojo_base.mojom.UnguessableToken devtools_navigation_token)
      => (blink.mojom.CommitResult commit_result);

  // Tells the renderer that a failed navigation is ready to commit.
  //
  // The result of this commit usually results in displaying an error page.
  // Note |error_page_content| may contain the content of the error page
  // (i.e. flattened HTML, JS, CSS).
  //
  // When the Network Service is enabled, |subresource_loader_factories| may
  // also be provided by the browser as a means for the renderer to load
  // subresources where applicable.
  CommitFailedNavigation(
      CommonNavigationParams common_params,
      CommitNavigationParams request_params,
      bool has_stale_copy_in_cache,
      int32 error_code,
      string? error_page_content,
      blink.mojom.URLLoaderFactoryBundle? subresource_loader_factories)
      => (blink.mojom.CommitResult commit_result);

  // Tells the renderer that a same-document navigation should be committed.
  // The renderer will return a status value indicating whether the commit
  // could proceed as expected or not. In particular, it might be necessary to
  // restart the navigation if it is no-longer same-document, which can happen
  // if the renderer committed another navigation in the meantime.
  CommitSameDocumentNavigation(
      CommonNavigationParams common_params,
      CommitNavigationParams request_params)
      => (blink.mojom.CommitResult commit_result);

  // Asks the renderer to handle a renderer-debug URL.
  HandleRendererDebugURL(url.mojom.Url url);

  // Provides the renderer an updated |subresource_loader_factories|.
  //
  // This method is intended to fix broken loaders after a Network Service
  // crash, and is only used when Network Service is enabled.
  //
  // The new bundle contains replacement factories for a subset of the
  // receiver's existing bundle.
  UpdateSubresourceLoaderFactories(
      blink.mojom.URLLoaderFactoryBundle subresource_loader_factories);

  // Returns a DevToolsAgent interface for this frame, used for
  // remote debugging. See DevToolsAgent for details.
  // Returned DevToolsAgent must be associated with navigation control,
  // due to various ordering dependencies between DevTools protocol and
  // navigation.
  BindDevToolsAgent(
      pending_associated_remote<blink.mojom.DevToolsAgentHost> agent_host,
      pending_associated_receiver<blink.mojom.DevToolsAgent> agent);

  // Request for the renderer to execute JavaScript in the frame's context.
  //
  // |javascript| is the string containing the JavaScript to be executed in the
  // target frame's context.
  //
  // |wants_result| is true if the result of this execution is required by the
  // caller. If it is false, a reply is still required by Mojo, but a null value
  // should be returned to avoid issues serializing a large, unwanted reply.
  //
  // TODO(hajimehoshi): This requires navigate association to keep the message
  // order with other navigation-related messages. Fix this and move this to a
  // non-navigate-related interface if possible.
  JavaScriptExecuteRequest(
      mojo_base.mojom.String16 javascript,
      bool wants_result) => (mojo_base.mojom.Value result);

  // ONLY FOR TESTS: Same as above but adds a fake UserGestureIndicator around
  // execution. (crbug.com/408426)
  JavaScriptExecuteRequestForTests(
      mojo_base.mojom.String16 javascript,
      bool wants_result,
      bool has_user_gesture,
      int32 world_id)
      => (mojo_base.mojom.Value result);

  // Same as JavaScriptExecuteRequest above except the script is run in the
  // isolated world specified by the fourth parameter.
  JavaScriptExecuteRequestInIsolatedWorld(
      mojo_base.mojom.String16 javascript,
      bool wants_result,
      int32 world_id) => (mojo_base.mojom.Value result);

  // Posts a message from a frame in another process to the current renderer.
  // |source_routing_id| is the routing ID of the source frame in the source
  // process when sent to the browser. The browser replaces it with the routing
  // ID of the equivalent frame proxy in the destination process.
  // |source_origin| is the origin of the source frame when the message was
  // sent, and |target_origin| specifies what the origin of the target frame
  // must be for the message to be dispatched. An empty string allows the
  // message to be dispatched to any origin.
  // |message| is the encoded data, and any extra properties such as
  // transferred ports or blobs.
  PostMessageEvent(int32 source_routing_id,
                   mojo_base.mojom.String16 source_origin,
                   mojo_base.mojom.String16 target_origin,
                   blink.mojom.TransferableMessage message);

  // Forwards a message from a portal's host to the main frame in the portal's
  // guest contents.
  ForwardMessageFromHost(blink.mojom.TransferableMessage message,
                         url.mojom.Origin source_origin,
                         url.mojom.Origin? target_origin);

  // Called on the main frame of a page embedded in a Portal when it is
  // activated. The frame has the option to adopt the previous page as a portal
  // identified by |portal_token| with the interface |portal|. The activation
  // can optionally include a message |data| dispatched with the
  // PortalActivateEvent. The return value |was_adopted| indicates if the portal
  // for the predecessor (identified by |portal_token|) was adopted by the
  // current frame.
  OnPortalActivated(
      mojo_base.mojom.UnguessableToken portal_token,
      pending_associated_remote<blink.mojom.Portal> portal,
      pending_associated_receiver<blink.mojom.PortalClient> portal_client,
      blink.mojom.TransferableMessage data) => (bool was_adopted);
};

// Implemented by the frame (e.g. renderer processes).
// Instances of this interface must be associated with (i.e., FIFO with) the
// legacy IPC channel.
interface FrameBindingsControl {
  // Used to tell a render frame whether it should expose various bindings
  // that allow JS content extended privileges. See BindingsPolicy for valid
  // flag values.
  AllowBindings(int32 enabled_bindings_flags);
};

// Implemented by a service that provides implementations of the Frame
// interface. (e.g. renderer processes).
interface FrameFactory {
  CreateFrame(int32 frame_routing_id, Frame& frame);
};

struct CreateNewWindowParams {
  // True if this open request came in the context of a user gesture.
  //
  // TODO(mustaq): We have cases where a user gesture is assumed to be
  // there even when it's not the case.  See https://crbug.com/843233.
  bool mimic_user_gesture;

  // Type of window requested.
  WindowContainerType window_container_type;

  // The session storage namespace ID this window should use.
  string session_storage_namespace_id;

  // The session storage namespace ID this window should clone from.
  // TODO(dmurph): Remove this once session storage is fully mojo'd, as the
  // clone call happens on a different interface. https://crbug.com/716490
  string clone_from_session_storage_namespace_id;

  // The name of the resulting frame that should be created (empty if none
  // has been specified). UTF8 encoded string.
  string frame_name;

  // Whether the opener will be suppressed in the new window, in which case
  // scripting the new window is not allowed.
  bool opener_suppressed;

  // Whether the window should be opened in the foreground, background, etc.
  ui.mojom.WindowOpenDisposition disposition;

  // The URL that will be loaded in the new window (empty if none has been
  // specified).
  url.mojom.Url target_url;

  // The referrer that will be used to load |target_url| (empty if none has
  // been specified).
  blink.mojom.Referrer referrer;

  // The window features to use for the new window.
  blink.mojom.WindowFeatures features;
};

// Operation result when the renderer asks the browser to create a new window.
enum CreateNewWindowStatus {
  // Ignore creation of the new window. This can happen because creation is
  // blocked or because the new window should have no opener relationship.
  kIgnore,
  // Reuse the current window rather than creating a new window.
  kReuse,
  // Create a new window using the corresponding params in |reply|.
  kSuccess,
};

// All routing IDs in this struct must be set to a valid routing ID.
struct CreateNewWindowReply {
  // The ID of the view to be created.
  int32 route_id;

  // The ID of the main frame hosted in the view.
  int32 main_frame_route_id;

  // The ID of the widget for the main frame.
  int32 main_frame_widget_route_id;

  DocumentScopedInterfaceBundle main_frame_interface_bundle;

  // Duplicated from CreateNewWindowParams because legacy code.
  string cloned_session_storage_namespace_id;

  // Used for devtools instrumentation and trace-ability. The token is
  // propagated to Blink's LocalFrame and both Blink and content/
  // can tag calls and requests with this instrumentation token in order to
  // attribute them to the context frame.
  // |devtools_frame_token| is only defined by the browser and is never
  // sent back from the renderer in the control calls.
  mojo_base.mojom.UnguessableToken devtools_main_frame_token;
};

// An opaque handle that keeps alive the associated render process even after
// the frame is detached. Used by resource requests with "keepalive" specified.
interface KeepAliveHandle {};

// Implemented by the frame server (i.e. the browser process). For messages that
// must be associated with the IPC channel.
interface FrameHost {
  // Sent by the renderer to request the browser to create a new window. |reply|
  // is only non-null on when status == CreateNewWindowStatus::kSuccess.
  [Sync] CreateNewWindow(CreateNewWindowParams params)
      => (CreateNewWindowStatus status, CreateNewWindowReply? reply);

  // Sent by the renderer process to request the creation of a new portal.
  // |portal| is the pipe to be used for the Portal object, |client| is the pipe
  // used to communicate back with the caller. Returns |proxy_routing_id|, which
  // is the routing id of the RenderFrameProxy and |portal_token|, which is the
  // unique identifier for the portal.
  [Sync] CreatePortal(
      pending_associated_receiver<blink.mojom.Portal> portal,
      pending_associated_remote<blink.mojom.PortalClient> client)
      => (int32 proxy_routing_id,
          mojo_base.mojom.UnguessableToken portal_token,
          mojo_base.mojom.UnguessableToken devtools_frame_token);

  // Requests that this frame adopts the portal identified by |portal_token|.
  // Returns |proxy_routing_id|, which is the routing id of the portal's
  // RenderFrameProxy, |replicated_state|, the replicated state associated with
  // that RFP, and the |devtools_frame_token|.
  [Sync] AdoptPortal(mojo_base.mojom.UnguessableToken portal_token)
      => (int32 proxy_routing_id,
          FrameReplicationState replicated_state,
          mojo_base.mojom.UnguessableToken devtools_frame_token);

  // Creates and returns a KeepAliveHandle.
  IssueKeepAliveHandle(KeepAliveHandle& keep_alive_handle);

  // Sent by the renderer when a navigation commits in the frame.

  // If |interface_params| is non-empty, the FrameHost implementation
  // must unbind the old InterfaceProvider and DocumentInterfaceBroker
  // connections, and drop any interface requests pending on them.
  // Then it should bind the appropriate requests and start servicing
  // GetInterface messages coming in on these new connections
  // in a security context that is appropriate for the committed navigation.
  //
  // The FrameHost implementation must enforce that |interface_params|
  // is set for cross-document navigations. This prevents origin confusion by
  // ensuring that interface requests racing with navigation commit will be
  // either ignored, or serviced correctly in the security context of the
  // document they originated from (based on which InterfaceProvider connection
  // the GetInterface messages arrive on or DocumentInterfaceBroker
  // connection the Get<interface> messages arrive on).
  DidCommitProvisionalLoad(
      DidCommitProvisionalLoadParams params,
      DidCommitProvisionalLoadInterfaceParams? interface_params);

  // Sent by the renderer to indicate that a same document navigation
  // committed in the renderer process.
  DidCommitSameDocumentNavigation(
      DidCommitProvisionalLoadParams params);

  // Sent by the renderer to request a navigation.
  // |blob_url_token| should be non-null when this is a navigation to a blob:
  // URL. The token will then be used to look up the blob associated with the
  // blob URL. Without this by the time the navigation code starts fetching
  // the URL the blob URL might no longer be valid. |blob_url_token| is
  // not part of BeginNavigationParams because that struct needs to be
  // cloneable, and thus can't contain mojo interfaces.
  // If an invalid BlobURLToken is passed in, or if the token doesn't match the
  // url in |common_params|, the navigation will result in a network error.
  // |navigation_client| is passed to the renderer to allow for further control
  // of the navigation. Allows for Commit and Cancels/Aborts. It is only valid
  // when PerNavigationMojoInterface is enabled.
  // TODO(ahemery): |navigation_client| should not be optional. Make it
  // mandatory when removing PerNavigationMojoInterface feature flag.
  BeginNavigation(
      CommonNavigationParams common_params,
      BeginNavigationParams begin_params,
      blink.mojom.BlobURLToken? blob_url_token,
      associated NavigationClient? navigation_client,
      blink.mojom.NavigationInitiator? navigation_initiator);

  // Sent when a subresource response has started.
  // |cert_status| is the bitmask of status info of the SSL certificate. (see
  // net/cert/cert_status_flags.h).
  SubresourceResponseStarted(url.mojom.Url url, uint32 cert_status);

  // Sent when a resource load finished, successfully or not.
  ResourceLoadComplete(ResourceLoadInfo url_load_info);

  // Sent when the frame changes its window.name.
  DidChangeName(string name, string unique_name);

  // Sent when the frame starts enforcing an insecure request policy. Sending
  // this information in DidCommitProvisionalLoad isn't sufficient; this
  // message is needed because, for example, a document can dynamically insert
  // a <meta> tag that causes strict mixed content checking to be enforced.
  //
  // Argument |policy_bitmap| represents blink::WebInsecureRequestPolicy uint8
  // bitfield.
  EnforceInsecureRequestPolicy(uint8 policy_bitmap);
  // Elements of |set| are hashes of hosts to upgrade.
  EnforceInsecureNavigationsSet(array<uint32> set);

  // Notifies the browser process that HTTP headers which affect the frame
  // polices were delivered with the document being loaded into the frame. This
  // can be either or both of 'Feature-Policy' or 'Content-Security-Policy' (
  // which can set sandbox flags).
  //
  // |parsed_header| is a list of an origin whitelist for each feature in the
  // policy.
  DidSetFramePolicyHeaders(
      blink.mojom.WebSandboxFlags sandbox_flags,
      array<blink.mojom.ParsedFeaturePolicyDeclaration> parsed_header);

  // If a cross-process navigation was started for the initial history load in
  // this subframe, this tries to cancel it to allow a client redirect to happen
  // instead.
  CancelInitialHistoryLoad();

  // Change the encoding name of the page in UI when the page has detected
  // proper encoding name. Sent for top-level frames.
  UpdateEncoding(string encoding_name);

  // The frame's size is replicated in the browser so that the browser can
  // correctly set the initial size of the frame in case of a cross-process
  // navigation.
  FrameSizeChanged(gfx.mojom.Size size);

  // Notifies the browser that the current frame has either become or is no
  // longer fullscreen.
  FullscreenStateChanged(bool is_fullscreen);

  // Notifies the browser that the current frame has changed its visibility
  // status.
  VisibilityChanged(blink.mojom.FrameVisibility visibility);

  // Notifies the browser that the current frame has changed its lifecycle
  // state.
  LifecycleStateChanged(blink.mojom.FrameLifecycleState state);

  // Updates information to determine whether a user gesture should carryover to
  // future navigations. This is needed so navigations within a certain
  // timeframe of a request initiated by a gesture will be treated as if they
  // were initiated by a gesture too, otherwise the navigation may be blocked.
  [EnableIf=is_android]
  UpdateUserGestureCarryoverInfo();

  // Sent after the onload handler has been invoked for the document
  // in this frame. Sent for top-level frames.
  DocumentOnLoadCompleted();

  // Sent by the blink's FrameScheduler when a list of active features
  // the scheduler tracks changes.
  // See blink::scheduler::SchedulingPolicy::Feature for the meaning
  // of the individual bits.
  // TODO(altimin): Move into a separate scheduling interface.
  UpdateActiveSchedulerTrackedFeatures(uint64 features_mask);

  // Blink and JavaScript error messages to log to the console or debugger UI.
  DidAddMessageToConsole(
      blink.mojom.ConsoleMessageLevel log_level,
      mojo_base.mojom.BigString16 msg,
      int32 line_number,
      mojo_base.mojom.String16 source_id);

  // Sent when the renderer fails a provisional load with an error.
  //
  // |url| is the URL that the error is reported for.
  //
  // |error_code| is a net::Error code as reported in the
  // DidFailProvisionalLoad callback.
  //
  // |error_description| is an error message generated from the error_code.
  // This can be an empty string if we were unable to find a meaningful
  // description.
  //
  // |showing_repost_interstitial| is true if the failure is the result of
  // navigating to a POST again and we're going to show the POST interstitial.
  // TODO(https://crbug.com/963806): Delete this method.
  DidFailProvisionalLoadWithError(
      url.mojom.Url url,
      int32 error_code,
      mojo_base.mojom.String16 error_description,
      bool showing_repost_interstitial);

  // Sent when the renderer fails to load with an error.
  DidFailLoadWithError(
      url.mojom.Url url,
      int32 error_code,
      mojo_base.mojom.String16 error_description);

  // Sent to the browser process to transfer the user activation state from the
  // source frame to the frame sending this IPC. The browser will update the
  // user activation state of the frames in the frame tree in the non-source and
  // non-target renderer processes.
  TransferUserActivationFrom(int32 source_routing_id);

  // Causes a window previously opened via RenderMessageFilter::CreateNewWindow
  // to be shown on the screen. This message is routed to the preexisting frame
  // that opened the window, and |pending_widget_routing_id| corresponds to the
  // widget routing id from the CreateNewWindow reply.
  ShowCreatedWindow(int32 pending_widget_routing_id,
                    ui.mojom.WindowOpenDisposition disposition,
                    gfx.mojom.Rect rect, bool opened_by_user_gesture);

  // Sent by the renderer when the frame becomes focused.
  FrameFocused();

  // Evicts the page from the back/forward cache due to e.g., JavaScript
  // execution.
  EvictFromBackForwardCache();
};