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// Copyright (c) 2011 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_RESOURCE_REQUEST_HANDLER_H_
#define CEF_INCLUDE_CEF_RESOURCE_REQUEST_HANDLER_H_
#pragma once
#include "include/cef_base.h"
#include "include/cef_browser.h"
#include "include/cef_callback.h"
#include "include/cef_frame.h"
#include "include/cef_request.h"
#include "include/cef_resource_handler.h"
#include "include/cef_response.h"
#include "include/cef_response_filter.h"
class CefCookieAccessFilter;
///
/// Implement this interface to handle events related to browser requests. The
/// methods of this class will be called on the IO thread unless otherwise
/// indicated.
///
/*--cef(source=client,no_debugct_check)--*/
class CefResourceRequestHandler : public virtual CefBaseRefCounted {
public:
typedef cef_return_value_t ReturnValue;
typedef cef_urlrequest_status_t URLRequestStatus;
///
/// Called on the IO thread before a resource request is loaded. The |browser|
/// and |frame| values represent the source of the request, and may be NULL
/// for requests originating from service workers or CefURLRequest. To
/// optionally filter cookies for the request return a CefCookieAccessFilter
/// object. The |request| object cannot not be modified in this callback.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual CefRefPtr<CefCookieAccessFilter> GetCookieAccessFilter(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request) {
return nullptr;
}
///
/// Called on the IO thread before a resource request is loaded. The |browser|
/// and |frame| values represent the source of the request, and may be NULL
/// for requests originating from service workers or CefURLRequest. To
/// redirect or change the resource load optionally modify |request|.
/// Modification of the request URL will be treated as a redirect. Return
/// RV_CONTINUE to continue the request immediately. Return RV_CONTINUE_ASYNC
/// and call CefCallback methods at a later time to continue or cancel the
/// request asynchronously. Return RV_CANCEL to cancel the request
/// immediately.
///
/*--cef(optional_param=browser,optional_param=frame,
default_retval=RV_CONTINUE)--*/
virtual ReturnValue OnBeforeResourceLoad(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
CefRefPtr<CefCallback> callback) {
return RV_CONTINUE;
}
///
/// Called on the IO thread before a resource is loaded. The |browser| and
/// |frame| values represent the source of the request, and may be NULL for
/// requests originating from service workers or CefURLRequest. To allow the
/// resource to load using the default network loader return NULL. To specify
/// a handler for the resource return a CefResourceHandler object. The
/// |request| object cannot not be modified in this callback.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual CefRefPtr<CefResourceHandler> GetResourceHandler(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request) {
return nullptr;
}
///
/// Called on the IO thread when a resource load is redirected. The |browser|
/// and |frame| values represent the source of the request, and may be NULL
/// for requests originating from service workers or CefURLRequest. The
/// |request| parameter will contain the old URL and other request-related
/// information. The |response| parameter will contain the response that
/// resulted in the redirect. The |new_url| parameter will contain the new URL
/// and can be changed if desired. The |request| and |response| objects cannot
/// be modified in this callback.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual void OnResourceRedirect(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
CefRefPtr<CefResponse> response,
CefString& new_url) {}
///
/// Called on the IO thread when a resource response is received. The
/// |browser| and |frame| values represent the source of the request, and may
/// be NULL for requests originating from service workers or CefURLRequest. To
/// allow the resource load to proceed without modification return false. To
/// redirect or retry the resource load optionally modify |request| and return
/// true. Modification of the request URL will be treated as a redirect.
/// Requests handled using the default network loader cannot be redirected in
/// this callback. The |response| object cannot be modified in this callback.
///
/// WARNING: Redirecting using this method is deprecated. Use
/// OnBeforeResourceLoad or GetResourceHandler to perform redirects.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual bool OnResourceResponse(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
CefRefPtr<CefResponse> response) {
return false;
}
///
/// Called on the IO thread to optionally filter resource response content.
/// The |browser| and |frame| values represent the source of the request, and
/// may be NULL for requests originating from service workers or
/// CefURLRequest. |request| and |response| represent the request and response
/// respectively and cannot be modified in this callback.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual CefRefPtr<CefResponseFilter> GetResourceResponseFilter(
CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
CefRefPtr<CefResponse> response) {
return nullptr;
}
///
/// Called on the IO thread when a resource load has completed. The |browser|
/// and |frame| values represent the source of the request, and may be NULL
/// for requests originating from service workers or CefURLRequest. |request|
/// and |response| represent the request and response respectively and cannot
/// be modified in this callback. |status| indicates the load completion
/// status. |received_content_length| is the number of response bytes actually
/// read. This method will be called for all requests, including requests that
/// are aborted due to CEF shutdown or destruction of the associated browser.
/// In cases where the associated browser is destroyed this callback may
/// arrive after the CefLifeSpanHandler::OnBeforeClose callback for that
/// browser. The CefFrame::IsValid method can be used to test for this
/// situation, and care should be taken not to call |browser| or |frame|
/// methods that modify state (like LoadURL, SendProcessMessage, etc.) if the
/// frame is invalid.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual void OnResourceLoadComplete(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
CefRefPtr<CefResponse> response,
URLRequestStatus status,
int64_t received_content_length) {}
///
/// Called on the IO thread to handle requests for URLs with an unknown
/// protocol component. The |browser| and |frame| values represent the source
/// of the request, and may be NULL for requests originating from service
/// workers or CefURLRequest. |request| cannot be modified in this callback.
/// Set |allow_os_execution| to true to attempt execution via the registered
/// OS protocol handler, if any. SECURITY WARNING: YOU SHOULD USE THIS METHOD
/// TO ENFORCE RESTRICTIONS BASED ON SCHEME, HOST OR OTHER URL ANALYSIS BEFORE
/// ALLOWING OS EXECUTION.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual void OnProtocolExecution(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
bool& allow_os_execution) {}
};
///
/// Implement this interface to filter cookies that may be sent or received from
/// resource requests. The methods of this class will be called on the IO thread
/// unless otherwise indicated.
///
/*--cef(source=client,no_debugct_check)--*/
class CefCookieAccessFilter : public virtual CefBaseRefCounted {
public:
///
/// Called on the IO thread before a resource request is sent. The |browser|
/// and |frame| values represent the source of the request, and may be NULL
/// for requests originating from service workers or CefURLRequest. |request|
/// cannot be modified in this callback. Return true if the specified cookie
/// can be sent with the request or false otherwise.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual bool CanSendCookie(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
const CefCookie& cookie) {
return true;
}
///
/// Called on the IO thread after a resource response is received. The
/// |browser| and |frame| values represent the source of the request, and may
/// be NULL for requests originating from service workers or CefURLRequest.
/// |request| cannot be modified in this callback. Return true if the
/// specified cookie returned with the response can be saved or false
/// otherwise.
///
/*--cef(optional_param=browser,optional_param=frame)--*/
virtual bool CanSaveCookie(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
CefRefPtr<CefRequest> request,
CefRefPtr<CefResponse> response,
const CefCookie& cookie) {
return true;
}
};
#endif // CEF_INCLUDE_CEF_RESOURCE_REQUEST_HANDLER_H_
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