static IDownload FetchWithCors(this IResourceLoader loader, Url url, ResourceRequest request, CorsSetting setting, OriginBehavior behavior)
{
var download = loader.DownloadAsync(new ResourceRequest(request.Source, url)
{
Origin = request.Origin,
IsManualRedirectDesired = true
});
return(download.Wrap(response =>
{
if (response.IsRedirected())
{
url.Href = response.Headers.GetOrDefault(HeaderNames.Location, url.Href);
if (request.Origin.Is(url.Origin))
{
return loader.FetchWithCors(new ResourceRequest(request.Source, url)
{
IsCookieBlocked = request.IsCookieBlocked,
IsSameOriginForced = request.IsSameOriginForced,
Origin = request.Origin
}, setting, behavior);
}
return loader.FetchWithCors(url, request, setting, behavior);
}
else
{
return download;
}
}));
}
private IDownload DownloadWithCors(ResourceRequest request)
{
return(_loader.FetchWithCors(new CorsRequest(request)
{
Setting = _link.CrossOrigin.ToEnum(CorsSetting.None),
Behavior = OriginBehavior.Taint,
Integrity = _document.Options.GetProvider <IIntegrityProvider>()
}));
}
/// <summary>
/// Performs a potentially CORS-enabled fetch from the given URI by
/// using an asynchronous GET request. For more information see:
/// http://www.w3.org/TR/html5/infrastructure.html#potentially-cors-enabled-fetch
/// </summary>
/// <param name="loader">The resource loader to use.</param>
/// <param name="request">The request to issue.</param>
/// <param name="setting">The cross origin settings to use.</param>
/// <param name="behavior">
/// The default behavior in case it is undefined.
/// </param>
/// <returns>
/// The task that will eventually give the resource's response data.
/// </returns>
public static IDownload FetchWithCors(this IResourceLoader loader, ResourceRequest request, CorsSetting setting, OriginBehavior behavior)
{
var url = request.Target;
if (request.Origin == url.Origin || url.Scheme == ProtocolNames.Data || url.Href == "about:blank")
{
return(loader.FetchWithCors(url, request, setting, behavior));
}
else if (setting == CorsSetting.Anonymous || setting == CorsSetting.UseCredentials)
{
return(loader.FetchWithCors(request, setting));
}
else if (setting == CorsSetting.None)
{
return(loader.FetchWithoutCors(request, behavior));
}
throw new DomException(DomError.Network);
}
public Task Process(ResourceRequest request)
{
if (_loader != null && Engine != null)
{
var setting = _script.CrossOrigin.ToEnum(CorsSetting.None);
var behavior = OriginBehavior.Taint;
_download = _loader.FetchWithCors(request, setting, behavior);
return(_download.Task);
}
return(null);
}
public Task ProcessAsync(ResourceRequest request)
{
if (_loader != null && Engine != null)
{
Download = _loader.FetchWithCors(new CorsRequest(request)
{
Behavior = OriginBehavior.Taint,
Setting = _script.CrossOrigin.ToEnum(CorsSetting.None),
Integrity = _document.Options.GetProvider <IIntegrityProvider>()
});
return(Download.Task);
}
return(null);
}
private static IDownload FetchFromSameOrigin(this IResourceLoader loader, Url url, CorsRequest cors)
{
var request = cors.Request;
var download = loader.DownloadAsync(new ResourceRequest(request.Source, url)
{
Origin = request.Origin,
IsManualRedirectDesired = true
});
return(download.Wrap(response =>
{
if (response.IsRedirected())
{
url.Href = response.Headers.GetOrDefault(HeaderNames.Location, url.Href);
return request.Origin.Is(url.Origin) ?
loader.FetchWithCors(cors.RedirectTo(url)) :
loader.FetchFromSameOrigin(url, cors);
}
return cors.CheckIntegrity(download);
}));
}
