content/common/resource_messages.h

// Copyright (c) 2011 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.

// IPC messages for resource loading.

// Multiply-included message file, hence no include guard.
#include "base/shared_memory.h"
#include "content/common/resource_response.h"
#include "content/public/common/common_param_traits.h"
#include "ipc/ipc_message_macros.h"
#include "net/base/upload_data.h"

#define IPC_MESSAGE_START ResourceMsgStart
#undef IPC_MESSAGE_EXPORT
#define IPC_MESSAGE_EXPORT CONTENT_EXPORT

IPC_STRUCT_TRAITS_BEGIN(webkit_glue::ResourceResponseInfo)
  IPC_STRUCT_TRAITS_MEMBER(request_time)
  IPC_STRUCT_TRAITS_MEMBER(response_time)
  IPC_STRUCT_TRAITS_MEMBER(headers)
  IPC_STRUCT_TRAITS_MEMBER(mime_type)
  IPC_STRUCT_TRAITS_MEMBER(charset)
  IPC_STRUCT_TRAITS_MEMBER(security_info)
  IPC_STRUCT_TRAITS_MEMBER(content_length)
  IPC_STRUCT_TRAITS_MEMBER(encoded_data_length)
  IPC_STRUCT_TRAITS_MEMBER(appcache_id)
  IPC_STRUCT_TRAITS_MEMBER(appcache_manifest_url)
  IPC_STRUCT_TRAITS_MEMBER(connection_id)
  IPC_STRUCT_TRAITS_MEMBER(connection_reused)
  IPC_STRUCT_TRAITS_MEMBER(load_timing)
  IPC_STRUCT_TRAITS_MEMBER(devtools_info)
  IPC_STRUCT_TRAITS_MEMBER(download_file_path)
  IPC_STRUCT_TRAITS_MEMBER(was_fetched_via_spdy)
  IPC_STRUCT_TRAITS_MEMBER(was_npn_negotiated)
  IPC_STRUCT_TRAITS_MEMBER(was_alternate_protocol_available)
  IPC_STRUCT_TRAITS_MEMBER(was_fetched_via_proxy)
  IPC_STRUCT_TRAITS_MEMBER(socket_address)
IPC_STRUCT_TRAITS_END()

IPC_STRUCT_TRAITS_BEGIN(ResourceResponseHead)
  IPC_STRUCT_TRAITS_PARENT(webkit_glue::ResourceResponseInfo)
  IPC_STRUCT_TRAITS_MEMBER(status)
IPC_STRUCT_TRAITS_END()

IPC_STRUCT_TRAITS_BEGIN(SyncLoadResult)
  IPC_STRUCT_TRAITS_PARENT(ResourceResponseHead)
  IPC_STRUCT_TRAITS_MEMBER(final_url)
  IPC_STRUCT_TRAITS_MEMBER(data)
IPC_STRUCT_TRAITS_END()

// Parameters for a resource request.
IPC_STRUCT_BEGIN(ResourceHostMsg_Request)
  // The request method: GET, POST, etc.
  IPC_STRUCT_MEMBER(std::string, method)

  // The requested URL.
  IPC_STRUCT_MEMBER(GURL, url)

  // Usually the URL of the document in the top-level window, which may be
  // checked by the third-party cookie blocking policy. Leaving it empty may
  // lead to undesired cookie blocking. Third-party cookie blocking can be
  // bypassed by setting first_party_for_cookies = url, but this should ideally
  // only be done if there really is no way to determine the correct value.
  IPC_STRUCT_MEMBER(GURL, first_party_for_cookies)

  // The referrer to use (may be empty).
  IPC_STRUCT_MEMBER(GURL, referrer)

  // Additional HTTP request headers.
  IPC_STRUCT_MEMBER(std::string, headers)

  // net::URLRequest load flags (0 by default).
  IPC_STRUCT_MEMBER(int, load_flags)

  // Process ID from which this request originated, or zero if it originated
  // in the renderer itself.
  IPC_STRUCT_MEMBER(int, origin_pid)

  // What this resource load is for (main frame, sub-frame, sub-resource,
  // object).
  IPC_STRUCT_MEMBER(ResourceType::Type, resource_type)

  // Used by plugin->browser requests to get the correct net::URLRequestContext.
  IPC_STRUCT_MEMBER(uint32, request_context)

  // Indicates which frame (or worker context) the request is being loaded into,
  // or kNoHostId.
  IPC_STRUCT_MEMBER(int, appcache_host_id)

  // Optional upload data (may be null).
  IPC_STRUCT_MEMBER(scoped_refptr<net::UploadData>, upload_data)

  IPC_STRUCT_MEMBER(bool, download_to_file)

  // True if the request was user initiated.
  IPC_STRUCT_MEMBER(bool, has_user_gesture)

  // True if |frame_id| is the main frame of a RenderView.
  IPC_STRUCT_MEMBER(bool, is_main_frame)

  // Identifies the frame within the RenderView that sent the request.
  // -1 if unknown / invalid.
  IPC_STRUCT_MEMBER(int64, frame_id)

  // True if |parent_frame_id| is the main frame of a RenderView.
  IPC_STRUCT_MEMBER(bool, parent_is_main_frame)

  // Identifies the parent frame of the frame that sent the request.
  // -1 if unknown / invalid.
  IPC_STRUCT_MEMBER(int64, parent_frame_id)

  IPC_STRUCT_MEMBER(content::PageTransition, transition_type)
IPC_STRUCT_END()

// Resource messages sent from the browser to the renderer.

// Sent when the headers are available for a resource request.
IPC_MESSAGE_ROUTED2(ResourceMsg_ReceivedResponse,
                    int /* request_id */,
                    ResourceResponseHead)

// Sent when cached metadata from a resource request is ready.
IPC_MESSAGE_ROUTED2(ResourceMsg_ReceivedCachedMetadata,
                    int /* request_id */,
                    std::vector<char> /* data */)

// Sent as upload progress is being made.
IPC_MESSAGE_ROUTED3(ResourceMsg_UploadProgress,
                    int /* request_id */,
                    int64 /* position */,
                    int64 /* size */)

// Sent when the request has been redirected.  The receiver is expected to
// respond with either a FollowRedirect message (if the redirect is to be
// followed) or a CancelRequest message (if it should not be followed).
IPC_MESSAGE_ROUTED3(ResourceMsg_ReceivedRedirect,
                    int /* request_id */,
                    GURL /* new_url */,
                    ResourceResponseHead)

// Sent when some data from a resource request is ready. The handle should
// already be mapped into the process that receives this message.
IPC_MESSAGE_ROUTED4(ResourceMsg_DataReceived,
                    int /* request_id */,
                    base::SharedMemoryHandle /* data */,
                    int /* data_len */,
                    int /* encoded_data_length */)

// Sent when some data from a resource request has been downloaded to
// file. This is only called in the 'download_to_file' case and replaces
// ResourceMsg_DataReceived in the call sequence in that case.
IPC_MESSAGE_ROUTED2(ResourceMsg_DataDownloaded,
                    int /* request_id */,
                    int /* data_len */)

// Sent when the request has been completed.
IPC_MESSAGE_ROUTED4(ResourceMsg_RequestComplete,
                    int /* request_id */,
                    net::URLRequestStatus /* status */,
                    std::string /* security info */,
                    base::Time /* completion_time */)

// Resource messages sent from the renderer to the browser.

// Makes a resource request via the browser.
IPC_MESSAGE_ROUTED2(ResourceHostMsg_RequestResource,
                    int /* request_id */,
                    ResourceHostMsg_Request)

// Cancels a resource request with the ID given as the parameter.
IPC_MESSAGE_ROUTED1(ResourceHostMsg_CancelRequest,
                    int /* request_id */)

// Sets a new routing id for the resource request with the ID given as the
// parameter. This happens when a pending request is transferred to another
// page.
IPC_MESSAGE_CONTROL2(ResourceHostMsg_TransferRequestToNewPage,
                     int /* new routing_id */,
                     int /* request_id */)

// Follows a redirect that occured for the resource request with the ID given
// as the parameter.
IPC_MESSAGE_ROUTED3(ResourceHostMsg_FollowRedirect,
                    int /* request_id */,
                    bool /* has_new_first_party_for_cookies */,
                    GURL /* new_first_party_for_cookies */)

// Makes a synchronous resource request via the browser.
IPC_SYNC_MESSAGE_ROUTED2_1(ResourceHostMsg_SyncLoad,
                           int /* request_id */,
                           ResourceHostMsg_Request,
                           SyncLoadResult)

// Sent when the renderer process is done processing a DataReceived
// message.
IPC_MESSAGE_ROUTED1(ResourceHostMsg_DataReceived_ACK,
                    int /* request_id */)

// Sent when the renderer has processed a DataDownloaded message.
IPC_MESSAGE_ROUTED1(ResourceHostMsg_DataDownloaded_ACK,
                    int /* request_id */)

// Sent by the renderer process to acknowledge receipt of a
// UploadProgress message.
IPC_MESSAGE_ROUTED1(ResourceHostMsg_UploadProgress_ACK,
                    int /* request_id */)

// Sent when the renderer process deletes a resource loader.
IPC_MESSAGE_CONTROL1(ResourceHostMsg_ReleaseDownloadedFile,
                     int /* request_id */)