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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_SCHEME_H_
#define CEF_INCLUDE_CEF_SCHEME_H_
#pragma once
#include "include/cef_base.h"
#include "include/cef_browser.h"
#include "include/cef_response.h"
#include "include/cef_request.h"
class CefSchemeHandler;
class CefSchemeHandlerFactory;
///
// Register a scheme handler factory for the specified |scheme_name| and
// optional |domain_name|. 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 the
// CefRegisterCustomScheme() function should be called for that scheme.
// 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.
///
/*--cef(optional_param=domain_name,optional_param=factory)--*/
bool CefRegisterSchemeHandlerFactory(const CefString& scheme_name,
const CefString& domain_name,
CefRefPtr<CefSchemeHandlerFactory> factory);
///
// Clear all registered scheme handler factories. Returns false on error. This
// function may be called on any thread.
///
/*--cef()--*/
bool CefClearSchemeHandlerFactories();
///
// Class that manages custom scheme registrations.
///
/*--cef(source=library)--*/
class CefSchemeRegistrar : public virtual CefBase {
public:
///
// Register a custom scheme. This method should not be called for the built-in
// HTTP, HTTPS, FILE, FTP, ABOUT and DATA schemes.
//
// If |is_standard| is true the scheme will be treated as a standard scheme.
// Standard schemes are subject to URL canonicalization and parsing rules as
// defined in the Common Internet Scheme Syntax RFC 1738 Section 3.1 available
// at http://www.ietf.org/rfc/rfc1738.txt
//
// In particular, the syntax for standard scheme URLs must be of the form:
// <pre>
// [scheme]://[username]:[password]@[host]:[port]/[url-path]
// </pre>
// Standard scheme URLs must have a host component that is a fully qualified
// domain name as defined in Section 3.5 of RFC 1034 [13] and Section 2.1 of
// RFC 1123. These URLs will be canonicalized to "scheme://host/path" in the
// simplest case and "scheme://username:password@host:port/path" in the most
// explicit case. For example, "scheme:host/path" and "scheme:///host/path"
// will both be canonicalized to "scheme://host/path". The origin of a
// standard scheme URL is the combination of scheme, host and port (i.e.,
// "scheme://host:port" in the most explicit case).
//
// For non-standard scheme URLs only the "scheme:" component is parsed and
// canonicalized. The remainder of the URL will be passed to the handler
// as-is. For example, "scheme:///some%20text" will remain the same.
// Non-standard scheme URLs cannot be used as a target for form submission.
//
// If |is_local| is true the scheme will be treated as local (i.e., with the
// same security rules as those applied to "file" URLs). Normal pages cannot
// link to or access local URLs. Also, by default, local URLs can only perform
// XMLHttpRequest calls to the same URL (origin + path) that originated the
// request. To allow XMLHttpRequest calls from a local URL to other URLs with
// the same origin set the CefSettings.file_access_from_file_urls_allowed
// value to true. To allow XMLHttpRequest calls from a local URL to all
// origins set the CefSettings.universal_access_from_file_urls_allowed value
// to true.
//
// If |is_display_isolated| is true the scheme will be treated as display-
// isolated. This means that pages cannot display these URLs unless they are
// from the same scheme. For example, pages in another origin cannot create
// iframes or hyperlinks to URLs with this scheme.
//
// 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,
bool is_standard,
bool is_local,
bool is_display_isolated) =0;
};
///
// Class that creates CefSchemeHandler instances. The methods of this class will
// always be called on the IO thread.
///
/*--cef(source=client)--*/
class CefSchemeHandlerFactory : public virtual CefBase {
public:
///
// Return a new scheme handler instance to handle the request. |browser| will
// be the browser window that initiated the request. If the request was
// initiated using the CefWebURLRequest API |browser| will be NULL. The
// |request| object passed to this method will not contain cookie data.
///
/*--cef(optional_param=browser)--*/
virtual CefRefPtr<CefSchemeHandler> Create(CefRefPtr<CefBrowser> browser,
const CefString& scheme_name,
CefRefPtr<CefRequest> request) =0;
};
///
// Class used to facilitate asynchronous responses to custom scheme handler
// requests. The methods of this class may be called on any thread.
///
/*--cef(source=library)--*/
class CefSchemeHandlerCallback : public virtual CefBase {
public:
///
// Notify that header information is now available for retrieval.
///
/*--cef()--*/
virtual void HeadersAvailable() =0;
///
// Notify that response data is now available for reading.
///
/*--cef()--*/
virtual void BytesAvailable() =0;
///
// Cancel processing of the request.
///
/*--cef()--*/
virtual void Cancel() =0;
};
///
// Class used to implement a custom scheme handler interface. The methods of
// this class will always be called on the IO thread.
///
/*--cef(source=client)--*/
class CefSchemeHandler : public virtual CefBase {
public:
///
// Begin processing the request. To handle the request return true and call
// HeadersAvailable() once the response header information is available
// (HeadersAvailable() can also be called from inside this method if header
// information is available immediately). To cancel the request return false.
///
/*--cef()--*/
virtual bool ProcessRequest(CefRefPtr<CefRequest> request,
CefRefPtr<CefSchemeHandlerCallback> callback) =0;
///
// Retrieve response header information. If the response length is not known
// set |response_length| to -1 and ReadResponse() will be called until it
// returns false. If the response length is known set |response_length|
// to a positive value and ReadResponse() will be called until it returns
// false or the specified number of bytes have been read. Use the |response|
// object to set the mime type, http status code and other optional header
// values. To redirect the request to a new URL set |redirectUrl| to the new
// URL.
///
/*--cef()--*/
virtual void GetResponseHeaders(CefRefPtr<CefResponse> response,
int64& response_length,
CefString& redirectUrl) =0;
///
// Read response data. If data is available immediately copy up to
// |bytes_to_read| bytes into |data_out|, set |bytes_read| to the number of
// bytes copied, and return true. To read the data at a later time set
// |bytes_read| to 0, return true and call BytesAvailable() when the data is
// available. To indicate response completion return false.
///
/*--cef()--*/
virtual bool ReadResponse(void* data_out,
int bytes_to_read,
int& bytes_read,
CefRefPtr<CefSchemeHandlerCallback> callback) =0;
///
// Request processing has been canceled.
///
/*--cef()--*/
virtual void Cancel() =0;
};
#endif // CEF_INCLUDE_CEF_SCHEME_H_
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