public OnProcessRequestEventArgs(string _id, CefRequest _request, CefCallback _callback)
{
id = _id;
request = _request;
callback = _callback;
continueRequest = false; //do not continue by default
}
public AssetSchemeHandler(BrowserConfig config, CefRequest request)
{
this.config = config;
isComplete = false;
length = remaining = -1;
}
public OnGetResourceHandlerEventArgs(string _id, CefBrowser _browser, CefFrame _frame, CefRequest _request)
{
id = _id;
browser = _browser;
frame = _frame;
request = _request;
DelegateRequest = false; //Default do not delegate, allow CEF to handle using network
}
protected override bool OnBeforeNavigation(CefBrowser browser, CefFrame frame, CefRequest request, CefNavigationType navigationType, bool isRedirect)
{
Console.WriteLine("OnBeforeNavigation: Request.Url={0} NavigationType={1} IsRedirect={2}",
request.Url,
navigationType,
isRedirect
);
return false;
}
/// <summary>
/// Create a new URL request. Only GET, POST, HEAD, DELETE and PUT request
/// methods are supported. Multiple post data elements are not supported and
/// elements of type PDE_TYPE_FILE are only supported for requests originating
/// from the browser process. Requests originating from the render process will
/// receive the same handling as requests originating from Web content -- if
/// the response contains Content-Disposition or Mime-Type header values that
/// would not normally be rendered then the response may receive special
/// handling inside the browser (for example, via the file download code path
/// instead of the URL request code path). The |request| object will be marked
/// as read-only after calling this method.
/// </summary>
public static CefUrlRequest Create(CefRequest request, CefUrlRequestClient client)
{
if (request == null) throw new ArgumentNullException("request");
var n_request = request.ToNative();
var n_client = client.ToNative();
return CefUrlRequest.FromNative(
cef_urlrequest_t.create(n_request, n_client)
);
}
protected override CefResourceHandler GetResourceHandler(CefBrowser browser, CefFrame frame, CefRequest request)
{
Debug.WriteLine(DBGPREFIX + "OnGetResourceHandler called for URL: " + request.Url);
var handler = OnGetResourceHandlerEvent;
if (handler != null)
{
LVCefRequest lvCefRequest = new LVCefRequest(OnProcessRequestEvent, OnCancelEvent);
Debug.WriteLine(DBGPREFIX + "OnGetResourceHandler for URL: " + request.Url + " assigned id " + lvCefRequest.id);
var e = new OnGetResourceHandlerEventArgs(lvCefRequest.id, browser, frame, request);
handler(this, e);
if (e.DelegateRequest)
{
Debug.WriteLine(DBGPREFIX + "OnGetResourceHandler for id " + lvCefRequest.id + " to be delegated");
return lvCefRequest;
}
}
Debug.WriteLine(DBGPREFIX + "OnGetResourceHandler for URL: " + request.Url + " to be handled normally by CEF");
return null;
}
/// <summary>
/// Returns the request object used to create this URL request. The returned
/// object is read-only and should not be modified.
/// </summary>
public CefRequest GetRequest()
{
return(CefRequest.FromNative(
cef_urlrequest_t.get_request(_self)
));
}
/// <summary>
/// Called on the IO thread when a resource load has completed. |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.
/// </summary>
protected virtual void OnResourceLoadComplete(CefBrowser browser, CefFrame frame, CefRequest request, CefResponse response, CefUrlRequestStatus status, long receivedContentLength)
{
}
/// <summary>
/// Called on the IO thread when a resource response is received. To allow the
/// resource to load normally return false. To redirect or retry the resource
/// modify |request| (url, headers or post body) and return true. The
/// |response| object cannot be modified in this callback.
/// </summary>
protected virtual bool OnResourceResponse(CefBrowser browser, CefFrame frame, CefRequest request, CefResponse response)
{
return(false);
}
/// <summary>
/// Called on the IO thread before a resource is loaded. To allow the resource
/// to load normally return NULL. To specify a handler for the resource return
/// a CefResourceHandler object. The |request| object should not be modified in
/// this callback.
/// </summary>
protected virtual CefResourceHandler GetResourceHandler(CefBrowser browser, CefFrame frame, CefRequest request)
{
return(null);
}
protected override bool OnBeforeNavigation(CefBrowser browser, CefFrame frame, CefRequest request, CefNavigationType navigation_type, bool isRedirect)
{
return false;
}
/// <summary> /// Begin processing the request. To handle the request return true and call /// CefCallback::Continue() once the response header information is available /// (CefCallback::Continue() can also be called from inside this method if /// header information is available immediately). To cancel the request return /// false. /// </summary> protected abstract bool ProcessRequest(CefRequest request, CefCallback callback);
/// <summary>
/// Create a new CefRequest object.
/// </summary>
public static CefRequest Create()
{
return(CefRequest.FromNative(
cef_request_t.create()
));
}
/// <summary> /// Called on the browser process IO thread before a resource request is /// initiated. The |browser| and |frame| values represent the source of the /// request, and may be NULL for requests originating from service workers or /// CefURLRequest. |request| represents the request contents and cannot be /// modified in this callback. |is_navigation| will be true if the resource /// request is a navigation. |is_download| will be true if the resource request /// is a download. |request_initiator| is the origin (scheme + domain) of the /// page that initiated the request. Set |disable_default_handling| to true to /// disable default handling of the request, in which case it will need to be /// handled via CefResourceRequestHandler::GetResourceHandler or it will be /// canceled. To allow the resource load to proceed with default handling /// return NULL. To specify a handler for the resource return a /// CefResourceRequestHandler object. This method will not be called if the /// client associated with |browser| returns a non-NULL value from /// CefRequestHandler::GetResourceRequestHandler for the same request /// (identified by CefRequest::GetIdentifier). /// </summary> protected abstract CefResourceRequestHandler GetResourceRequestHandler(CefBrowser browser, CefFrame frame, CefRequest request, bool isNavigation, bool isDownload, string requestInitiator, ref bool disableDefaultHandling);
/// <summary>
/// Called on the IO thread before a resource request is loaded. The |request|
/// object may be modified. To cancel the request return true otherwise return
/// false.
/// </summary>
protected virtual bool OnBeforeResourceLoad(CefBrowser browser, CefFrame frame, CefRequest request)
{
return false;
}
/// <summary> /// 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. /// </summary> protected abstract CefResourceHandler Create(CefBrowser browser, CefFrame frame, string schemeName, CefRequest request);
/// <summary> /// Called when |server| receives an HTTP request. |connection_id| uniquely /// identifies the connection, |client_address| is the requesting IPv4 or IPv6 /// client address including port number, and |request| contains the request /// contents (URL, method, headers and optional POST data). Call CefServer /// methods either synchronously or asynchronusly to send a response. /// </summary> protected abstract void OnHttpRequest(CefServer server, int connectionId, string clientAddress, CefRequest request);
/// <summary> /// Called when |server| receives a WebSocket request. |connection_id| uniquely /// identifies the connection, |client_address| is the requesting IPv4 or /// IPv6 client address including port number, and |request| contains the /// request contents (URL, method, headers and optional POST data). Execute /// |callback| either synchronously or asynchronously to accept or decline the /// WebSocket connection. If the request is accepted then OnWebSocketConnected /// will be called after the WebSocket has connected and incoming messages will /// be delivered to the OnWebSocketMessage callback. If the request is declined /// then the client will be disconnected and OnClientDisconnected will be /// called. Call the CefServer::SendWebSocketMessage method after receiving the /// OnWebSocketConnected callback to respond with WebSocket messages. /// </summary> protected abstract void OnWebSocketRequest(CefServer server, int connectionId, string clientAddress, CefRequest request, CefCallback callback);
protected override bool OnBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, bool isRedirect)
{
Debug.WriteLine(DBGPREFIX + "OnBeforeBrowse");
_messageRouter.OnBeforeBrowse(browser, frame);
return false;
}
protected override bool ProcessRequest(CefRequest request, CefCallback callback)
{
Debug.WriteLine(DBGPREFIX + "ProcessRequest for id: " + id);
var handler = OnProcessRequestEvent;
if (handler != null)
{
var e = new OnProcessRequestEventArgs(id, request, callback);
handler(null, e);
Debug.WriteLine(DBGPREFIX + "ProcessRequest for id: " + id + (e.continueRequest ? " will continue processing" : " will be cancelled") );
return e.continueRequest;
}
return false;
}
protected virtual bool ProcessRequest(CefRequest request, CefCallback callback)
{
request.Dispose();
callback.Dispose();
return(false);
}
protected override bool ProcessRequest(CefRequest request, CefCallback callback)
{
if (request == null || callback == null)
{
return false;
}
try
{
uri = new Uri(request.Url);
}
catch (Exception e)
{
API.Instance.Log("AssetSchemeHandler::ProcessRequest: Unable to parse path {0}", request.Url);
return false;
}
if (uri.LocalPath.Length == 1)
{
isAssetWrapping = true;
String resolvedTemplate = config.BrowserSourceSettings.Template;
resolvedTemplate = resolvedTemplate.Replace("$(FILE)", config.BrowserSourceSettings.Url);
resolvedTemplate = resolvedTemplate.Replace("$(WIDTH)", config.BrowserSourceSettings.Width.ToString());
resolvedTemplate = resolvedTemplate.Replace("$(HEIGHT)", config.BrowserSourceSettings.Height.ToString());
inputStream = new MemoryStream(Encoding.UTF8.GetBytes(resolvedTemplate));
}
else
{
isAssetWrapping = false;
if (uri.LocalPath != null && uri.LocalPath.Length > 1)
{
resolvedPath = uri.LocalPath.Substring(1);
}
else
{
API.Instance.Log("AssetSchemeHandler::ProcessRequest: Unable to parse path {0}", request.Url);
return false;
}
try
{
inputStream = new FileStream(resolvedPath, FileMode.Open, FileAccess.Read, FileShare.Read);
}
catch (Exception e)
{
if (inputStream != null)
{
inputStream.Dispose();
inputStream = null;
}
API.Instance.Log("AssetSchemeHandler::ProcessRequest of file {0} failed; {1}", resolvedPath, e.Message);
callback.Cancel();
return false;
}
}
length = remaining = inputStream.Length;
callback.Continue();
return true;
}
/// <summary>
/// Called on the IO thread before a resource is loaded. To allow the resource
/// to load normally return NULL. To specify a handler for the resource return
/// a CefResourceHandler object. The |request| object should not be modified in
/// this callback.
/// </summary>
protected virtual CefResourceHandler GetResourceHandler(CefBrowser browser, CefFrame frame, CefRequest request)
{
return null;
}
/// <summary>
/// Load the request represented by the |request| object.
/// </summary>
public void LoadRequest(CefRequest request)
{
if (request == null) throw new ArgumentNullException("request");
cef_frame_t.load_request(_self, request.ToNative());
}
/// <summary> /// Begin processing the request. To handle the request return true and call /// CefCallback::Continue() once the response header information is available /// (CefCallback::Continue() can also be called from inside this method if /// header information is available immediately). To cancel the request return /// false. /// </summary> protected abstract bool ProcessRequest(CefRequest request, CefCallback callback);
protected override CefResourceHandler Create(CefBrowser browser, CefFrame frame, string schemeName, CefRequest request)
{
if (browser == null || request == null)
{
API.Instance.Log("Browser null - Frame null: requested with null browser or request (rapidly opening and closing?)");
return null;
}
BrowserWrapper browserWrapper;
if (BrowserManager.Instance.TryGetBrowser(browser.Identifier, out browserWrapper))
{
return new AssetSchemeHandler(browserWrapper.BrowserConfig, request);
}
else
{
API.Instance.Log("Browser {0} - Frame {1}: {2} scheme with request {3} failed to locate browser config; Defaulting", browser.Identifier, (frame != null) ? frame.Identifier : -1, schemeName, request.Url);
return null;
}
}
/// <summary>
/// Called before browser navigation. Return true to cancel the navigation or
/// false to allow the navigation to proceed. The |request| object cannot be
/// modified in this callback.
/// </summary>
protected virtual bool OnBeforeNavigation(CefBrowser browser, CefFrame frame, CefRequest request, CefNavigationType navigation_type, bool isRedirect)
{
return(false);
}
protected override bool ProcessRequest(CefRequest request, CefCallback callback)
{
if (request == null || callback == null)
{
return false;
}
try
{
uri = new Uri(request.Url);
}
catch (Exception)
{
API.Instance.Log("AssetSchemeHandler::ProcessRequest: Unable to parse path {0}", request.Url);
return false;
}
Uri relativeUrl = new Uri(config.BrowserSourceSettings.Url);
if (relativeUrl.LocalPath.Length == 1)
{
API.Instance.Log("AssetSchemeHandler::ProcessRequest: Invalid url (this shouldn't happen) {0}", relativeUrl);
return false;
}
string relativePath = relativeUrl.LocalPath.Substring(1);
string filename;
try
{
filename = Path.GetFileName(relativePath);
relativePath = Path.GetDirectoryName(relativePath);
}
catch (ArgumentException)
{
API.Instance.Log("AssetSchemeHandler::ProcessRequest: Unable to create absolute path from {0} and {1}", relativeUrl.LocalPath, uri.LocalPath);
return false;
}
if (uri.LocalPath.Length == 1)
{
isAssetWrapping = true;
string extension = Path.GetExtension(filename);
if (extension.Length > 1 && extension.StartsWith("."))
{
extension = extension.Substring(1);
}
string wrappedAssetMimeType;
if (!MimeTypeManager.MimeTypes.TryGetValue(extension, out wrappedAssetMimeType))
{
wrappedAssetMimeType = "text/html";
}
string resolvedTemplate = config.BrowserSourceSettings.Template;
resolvedTemplate = resolvedTemplate.Replace("$(FILE)", filename);
resolvedTemplate = resolvedTemplate.Replace("$(WIDTH)", config.BrowserSourceSettings.Width.ToString());
resolvedTemplate = resolvedTemplate.Replace("$(HEIGHT)", config.BrowserSourceSettings.Height.ToString());
resolvedTemplate = resolvedTemplate.Replace("$(MIMETYPE)", wrappedAssetMimeType);
inputStream = new MemoryStream(Encoding.UTF8.GetBytes(resolvedTemplate));
}
else
{
isAssetWrapping = false;
if (uri.LocalPath != null && uri.LocalPath.Length > 1)
{
resolvedPath = uri.LocalPath.Substring(1);
}
else
{
API.Instance.Log("AssetSchemeHandler::ProcessRequest: Unable to parse path {0}", request.Url);
return false;
}
bool isIgnoringIntercept = uri.Query != null && uri.Query.Length != 0;
// if there is a query param, it should ignore interception
if (!isIgnoringIntercept && config.BrowserSourceSettings.IsApplyingTemplate)
{
resolvedPath = Path.Combine(relativePath, resolvedPath);
}
API.Instance.Log("AssetSchemeHandler::ProcessRequest handling file {0}", resolvedPath);
try
{
inputStream = new FileStream(resolvedPath, FileMode.Open, FileAccess.Read, FileShare.Read);
}
catch (Exception e)
{
if (inputStream != null)
{
inputStream.Dispose();
inputStream = null;
}
API.Instance.Log("AssetSchemeHandler::ProcessRequest of file {0} failed; {1}", resolvedPath, e.Message);
callback.Cancel();
return false;
}
}
length = remaining = inputStream.Length;
callback.Continue();
return true;
}
/// <summary>
/// Called on the IO thread before a resource request is loaded. The |request|
/// object may be modified. To cancel the request return true otherwise return
/// false.
/// </summary>
protected virtual bool OnBeforeResourceLoad(CefBrowser browser, CefFrame frame, CefRequest request)
{
return(false);
}
/// <summary>
/// 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.
/// </summary>
protected virtual void OnProtocolExecution(CefBrowser browser, CefFrame frame, CefRequest request, ref bool allowOSExecution)
{
}
/// <summary>
/// Called on the IO thread before a resource request is loaded. The |request|
/// object may be modified. Return RV_CONTINUE to continue the request
/// immediately. Return RV_CONTINUE_ASYNC and call CefRequestCallback::
/// Continue() at a later time to continue or cancel the request
/// asynchronously. Return RV_CANCEL to cancel the request immediately.
/// </summary>
protected virtual CefReturnValue OnBeforeResourceLoad(CefBrowser browser, CefFrame frame, CefRequest request, CefRequestCallback callback)
{
return(CefReturnValue.Continue);
}
/// <summary> /// 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. /// </summary> protected abstract CefCookieAccessFilter GetCookieAccessFilter(CefBrowser browser, CefFrame frame, CefRequest request);
/// <summary>
/// Called on the IO thread when a resource load is redirected. 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| object cannot be modified in this
/// callback.
/// </summary>
protected virtual void OnResourceRedirect(CefBrowser browser, CefFrame frame, CefRequest request, CefResponse response, ref string newUrl)
{
}
/// <summary>
/// Called on the IO thread before sending a network request with a "Cookie"
/// request header. Return true to allow cookies to be included in the network
/// request or false to block cookies. The |request| object should not be
/// modified in this callback.
/// </summary>
protected virtual bool CanGetCookies(CefBrowser browser, CefFrame frame, CefRequest request)
{
return(true);
}
/// <summary>
/// Called on the IO thread to optionally filter resource response content.
/// |request| and |response| represent the request and response respectively
/// and cannot be modified in this callback.
/// </summary>
protected virtual CefResponseFilter GetResourceResponseFilter(CefBrowser browser, CefFrame frame, CefRequest request, CefResponse response)
{
return(null);
}
/// <summary>
/// Called on the IO thread when receiving a network request with a
/// "Set-Cookie" response header value represented by |cookie|. Return true to
/// allow the cookie to be stored or false to block the cookie. The |request|
/// object should not be modified in this callback.
/// </summary>
protected virtual bool CanSetCookie(CefBrowser browser, CefFrame frame, CefRequest request, CefCookie cookie)
{
return(true);
}
/// <summary>
/// Called on the UI thread before browser navigation. Return true to cancel
/// the navigation or false to allow the navigation to proceed. The |request|
/// object cannot be modified in this callback.
/// CefLoadHandler::OnLoadingStateChange will be called twice in all cases.
/// If the navigation is allowed CefLoadHandler::OnLoadStart and
/// CefLoadHandler::OnLoadEnd will be called. If the navigation is canceled
/// CefLoadHandler::OnLoadError will be called with an |errorCode| value of
/// ERR_ABORTED.
/// </summary>
protected virtual bool OnBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, bool isRedirect)
{
return(false);
}
/// <summary> /// 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. /// </summary> protected abstract bool CanSendCookie(CefBrowser browser, CefFrame frame, CefRequest request, CefCookie cookie);
/// <summary> /// 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. /// </summary> protected abstract bool CanSaveCookie(CefBrowser browser, CefFrame frame, CefRequest request, CefResponse response, CefCookie cookie);
/// <summary>
/// Called on the UI thread before browser navigation. Return true to cancel
/// the navigation or false to allow the navigation to proceed. The |request|
/// object cannot be modified in this callback.
/// CefLoadHandler::OnLoadingStateChange will be called twice in all cases.
/// If the navigation is allowed CefLoadHandler::OnLoadStart and
/// CefLoadHandler::OnLoadEnd will be called. If the navigation is canceled
/// CefLoadHandler::OnLoadError will be called with an |errorCode| value of
/// ERR_ABORTED.
/// </summary>
protected virtual bool OnBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, bool isRedirect)
{
return false;
}
/// <summary> /// 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 will not contain cookie data. /// </summary> protected abstract CefResourceHandler Create(CefBrowser browser, CefFrame frame, string schemeName, CefRequest request);
/// <summary> /// Open the response stream. To handle the request immediately set /// |handle_request| to true and return true. To decide at a later time set /// |handle_request| to false, return true, and execute |callback| to continue /// or cancel the request. To cancel the request immediately set /// |handle_request| to true and return false. This method will be called in /// sequence but not from a dedicated thread. For backwards compatibility set /// |handle_request| to false and return false and the ProcessRequest method /// will be called. /// </summary> protected abstract bool Open(CefRequest request, out bool handleRequest, CefCallback callback);