/**
* Creates a proxy request by fetching pipelined data and adding it to an existing request.
*
*/
private sRequest createPipelinedProxyRequest(Gadget gadget, sRequest original)
{
sRequest request = new sRequest(original);
request.setIgnoreCache(true);
GadgetSpec spec = gadget.getSpec();
GadgetContext context = gadget.getContext();
IPreloads proxyPreloads = preloader.preload(context, spec,
PreloaderService.PreloadPhase.PROXY_FETCH);
// TODO: Add current url to GadgetContext to support transitive proxying.
// POST any preloaded content
if ((proxyPreloads != null) && proxyPreloads.getData().Count != 0)
{
JsonArray array = new JsonArray();
foreach(PreloadedData preload in proxyPreloads.getData())
{
Dictionary<String, Object> dataMap = preload.toJson();
foreach(var entry in dataMap)
{
// TODO: the existing, supported content is JSONObjects that contain the
// key already. Discarding the key is odd.
array.Put(entry.Value);
}
}
String postContent = array.ToString();
// POST the preloaded content, with a method override of GET
// to enable caching
request.setMethod("POST")
.setPostBody(Encoding.UTF8.GetBytes(postContent))
.setHeader("Content-Type", "text/json;charset=utf-8");
}
return request;
}
private sRequest buildHttpRequest(HttpRequestWrapper request)
{
Uri url = ValidateUrl(request.getParameter(URL_PARAM));
sRequest req = new sRequest(url);
req.Container = getContainer(request);
if (request.getParameter(GADGET_PARAM) != null)
{
req.setGadget(Uri.parse(request.getParameter(GADGET_PARAM)));
}
// Allow the rewriter to use an externally forced mime type. This is needed
// allows proper rewriting of <script src="x"/> where x is returned with
// a content type like text/html which unfortunately happens all too often
req.RewriteMimeType = request.getParameter(REWRITE_MIME_TYPE_PARAM);
req.setIgnoreCache(getIgnoreCache(request));
// If the proxy request specifies a refresh param then we want to force the min TTL for
// the retrieved entry in the cache regardless of the headers on the content when it
// is fetched from the original source.
if (request.getParameter(REFRESH_PARAM) != null)
{
int ttl = 0;
int.TryParse(request.getParameter(REFRESH_PARAM), out ttl);
req.CacheTtl = ttl;
}
return req;
}
/**
* Generate a remote content request based on the parameters
* sent from the client.
* @throws GadgetException
*/
private sRequest buildHttpRequest(HttpRequestWrapper request)
{
Uri url = ValidateUrl(request.getParameter(URL_PARAM));
sRequest req = new sRequest(url)
.setMethod(GetParameter(request, METHOD_PARAM, "GET"))
.setPostBody(request.getRequest().ContentEncoding.GetBytes(GetParameter(request, POST_DATA_PARAM, "")))
.setContainer(getContainer(request));
String headerData = GetParameter(request, HEADERS_PARAM, "");
if (headerData.Length > 0)
{
String[] headerList = headerData.Split('&');
foreach(String header in headerList)
{
String[] parts = header.Split('=');
if (parts.Length != 2)
{
throw new GadgetException(GadgetException.Code.INTERNAL_SERVER_ERROR,
"Malformed header specified,");
}
req.addHeader(HttpUtility.UrlDecode(parts[0]), HttpUtility.UrlDecode(parts[1]));
}
}
//removeUnsafeHeaders(req);
req.setIgnoreCache("1".Equals(request.getParameter(NOCACHE_PARAM)));
if (request.getParameter(GADGET_PARAM) != null)
{
req.Gadget = Uri.parse(request.getParameter(GADGET_PARAM));
}
// Allow the rewriter to use an externally forced mime type. This is needed
// allows proper rewriting of <script src="x"/> where x is returned with
// a content type like text/html which unfortunately happens all too often
req.setRewriteMimeType(request.getParameter(REWRITE_MIME_TYPE_PARAM));
// Figure out whether authentication is required
AuthType auth = AuthType.Parse(GetParameter(request, AUTHZ_PARAM, null));
req.AuthType = auth;
if (auth != AuthType.NONE)
{
req.setSecurityToken(extractAndValidateToken(request.getContext()));
req.setOAuthArguments(new OAuthArguments(auth, request.getRequest()));
}
return req;
}