cef/include/cef_scheme.h
Marshall Greenblatt 8f240861e3 Implement NetworkService request interception/handling (see issue #2622).
Implementation notes:
- Chromium change: CookieMonster::SetCookieableSchemes needs to be called
  immediately after the CookieMonster is created in NetworkContext::
  ApplyContextParamsToBuilder. Add a Profile::GetCookieableSchemes method and
  NetworkContextParams.cookieable_schemes member (set from
  ProfileNetworkContextService::CreateNetworkContextParams) to support that.
- Chromium change: Add a ContentBrowserClient::HandleExternalProtocol variant
  that exposes additional NetworkService request information.
- GetResourceResponseFilter is not yet implemented.

API changes:
- Resource-related callbacks have been moved from CefRequestHandler to a new
  CefResourceRequestHandler interface which is returned via the
  GetResourceRequestHandler method. If the CefRequestHandler declines to handle
  a resource it can optionally be handled by the CefRequestContextHandler, if
  any, associated with the loading context.
- The OnProtocolExecution callback has been moved from CefRequestHandler to
  CefResourceRequestHandler and will be called if a custom scheme request is
  unhandled.
- Cookie send/save permission callbacks have been moved from CefRequestHandler
  and CefResourceHandler to CefResourceRequestHandler.
- New methods added to CefResourceHandler that better match NetworkService
  execution sequence expectations. The old methods are now deprecated.
- New methods added to CefRequest and CefResponse.

Known behavior changes with the NetworkService implementation:
- Modifying the |new_url| parameter in OnResourceRedirect will no longer result
  in the method being called an additional time (likely a bug in the old
  implementation).
- Modifying the request URL in OnResourceResponse would previously cause a
  redirect. This behavior is now deprecated because the NetworkService does not
  support this functionality when using default network loaders. Temporary
  support has been added in combination with CefResourceHandler usage only.
- Other changes to the request object in OnResourceResponse will now cause the
  request to be restarted. This means that OnBeforeResourceLoad, etc, will be
  called an additional time with the new request information.
- CefResponse::GetMimeType will now be empty for non-200 responses.
- Requests using custom schemes can now be handled via CefResourceRequestHandler
  with the same callback behavior as builtin schemes.
- Redirects of custom scheme requests will now be followed as expected.
- Default handling of builtin schemes can now be disabled by setting
  |disable_default_handling| to true in GetResourceRequestHandler.
- Unhandled requests (custom scheme or builtin scheme with default handling
  disabled) will fail with an CefResponse::GetError value of
  ERR_UNKNOWN_URL_SCHEME.
- The CefSchemeHandlerFactory::Create callback will now include cookie headers.

To test:
- Run `cefclient --enable-network-service`. All resources should load
  successfully (this tests the transparent proxy capability).
- All tests pass with NetworkService disabled.
- The following tests pass with NetworkService enabled:
  - CookieTest.*
  - FrameTest.* (excluding .*Nav)
  - NavigationTest.* (excluding .Redirect*)
  - RequestHandlerTest.*
  - RequestContextTest.Basic*
  - RequestContextTest.Popup*
  - RequestTest.*
  - ResourceManagerTest.*
  - ResourceRequestHandlerTest.* (excluding .Filter*)
  - SchemeHandlerTest.*
  - StreamResourceHandlerTest.*
2019-04-23 22:53:28 -04:00

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// Copyright (c) 2012 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//
#ifndef CEF_INCLUDE_CEF_SCHEME_H_
#define CEF_INCLUDE_CEF_SCHEME_H_
#pragma once
#include "include/cef_base.h"
#include "include/cef_browser.h"
#include "include/cef_frame.h"
#include "include/cef_request.h"
#include "include/cef_resource_handler.h"
#include "include/cef_response.h"
class CefSchemeHandlerFactory;
///
// Register a scheme handler factory with the global request context. An empty
// |domain_name| value for a standard scheme will cause the factory to match all
// domain names. The |domain_name| value will be ignored for non-standard
// schemes. If |scheme_name| is a built-in scheme and no handler is returned by
// |factory| then the built-in scheme handler factory will be called. If
// |scheme_name| is a custom scheme then you must also implement the
// CefApp::OnRegisterCustomSchemes() method in all processes. This function may
// be called multiple times to change or remove the factory that matches the
// specified |scheme_name| and optional |domain_name|. Returns false if an error
// occurs. This function may be called on any thread in the browser process.
// Using this function is equivalent to calling
// CefRequestContext::GetGlobalContext()->RegisterSchemeHandlerFactory().
///
/*--cef(optional_param=domain_name,optional_param=factory)--*/
bool CefRegisterSchemeHandlerFactory(
const CefString& scheme_name,
const CefString& domain_name,
CefRefPtr<CefSchemeHandlerFactory> factory);
///
// Clear all scheme handler factories registered with the global request
// context. Returns false on error. This function may be called on any thread in
// the browser process. Using this function is equivalent to calling
// CefRequestContext::GetGlobalContext()->ClearSchemeHandlerFactories().
///
/*--cef()--*/
bool CefClearSchemeHandlerFactories();
///
// Class that manages custom scheme registrations.
///
/*--cef(source=library)--*/
class CefSchemeRegistrar : public CefBaseScoped {
public:
///
// Register a custom scheme. This method should not be called for the built-in
// HTTP, HTTPS, FILE, FTP, ABOUT and DATA schemes.
//
// See cef_scheme_options_t for possible values for |options|.
//
// This function may be called on any thread. It should only be called once
// per unique |scheme_name| value. If |scheme_name| is already registered or
// if an error occurs this method will return false.
///
/*--cef()--*/
virtual bool AddCustomScheme(const CefString& scheme_name, int options) = 0;
};
///
// Class that creates CefResourceHandler instances for handling scheme requests.
// The methods of this class will always be called on the IO thread.
///
/*--cef(source=client,no_debugct_check)--*/
class CefSchemeHandlerFactory : public virtual CefBaseRefCounted {
public:
///
// Return a new resource handler instance to handle the request or an empty
// reference to allow default handling of the request. |browser| and |frame|
// will be the browser window and frame respectively that originated the
// request or NULL if the request did not originate from a browser window
// (for example, if the request came from CefURLRequest). The |request| object
// passed to this method cannot be modified.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual CefRefPtr<CefResourceHandler> Create(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
const CefString& scheme_name,
CefRefPtr<CefRequest> request) = 0;
};
#endif // CEF_INCLUDE_CEF_SCHEME_H_