public sResponse execute(sRequest request)
{
sResponse response;
if (!request.IgnoreCache)
{
response = DefaultHttpCache.Instance.getResponse(request);
if (response != null && !response.isStale())
{
return(response);
}
}
if (request.AuthType == AuthType.NONE)
{
response = httpFetcher.fetch(request);
}
else if (request.AuthType == AuthType.OAUTH || request.AuthType == AuthType.SIGNED)
{
response = oauthRequestProvider.get().fetch(request);
}
else
{
return(sResponse.error());
}
if (!request.IgnoreCache && response.getHttpStatusCode() == (int)HttpStatusCode.OK)
{
DefaultHttpCache.Instance.addResponse(request, response);
}
return(response);
}
public override void Fetch(HttpRequestWrapper request, HttpResponseWrapper response)
{
if (request.getHeaders("If-Modified-Since") != null)
{
if (!request.isConcat)
{
response.setStatus((int)HttpStatusCode.NotModified);
}
return;
}
String host = request.getHeaders("Host");
if (!lockedDomainService.isSafeForOpenProxy(host))
{
// Force embedded images and the like to their own domain to avoid XSS
// in gadget domains.
return;
}
sRequest rcr = buildHttpRequest(request);
sResponse results = fetcher.fetch(rcr);
if (contentRewriterRegistry != null)
{
results = contentRewriterRegistry.rewriteHttpResponse(rcr, results);
}
if (!request.isConcat)
{
SetResponseHeaders(request, response.getResponse(), results);
for (int i = 0; i < results.getHeaders().Count; i++)
{
String name = results.getHeaders().GetKey(i);
if (!DISALLOWED_RESPONSE_HEADERS.Contains(name.ToLower()))
{
foreach (String value in results.getHeaders().GetValues(i))
{
response.AddHeader(name, value);
}
}
}
}
if (request.getParameter("rewriteMime") != null)
{
response.setContentType(request.getParameter("rewriteMime"));
}
if (results.getHttpStatusCode() != (int)HttpStatusCode.OK)
{
response.setStatus((int)results.getHttpStatusCode());
}
else
{
response.setStatus((int)HttpStatusCode.OK);
}
response.Write(results.responseBytes);
}
/**
* Retrieves js content from the given url.
*
* @param url
* @param fetcher
* @return The contents of the JS file, or null if it can't be fetched.
* @throws GadgetException
*/
private static String LoadDataFromUrl(String url, IHttpFetcher fetcher)
{
// set up the request and response objects
Uri uri = Uri.parse(url);
sRequest request = new sRequest(uri);
sResponse response = fetcher.fetch(request);
if (response.getHttpStatusCode() == (int)HttpStatusCode.OK)
{
return(response.responseString);
}
return(null);
}
protected MessageBundle fetchBundle(LocaleSpec locale, bool ignoreCache)
{
Uri url = locale.getMessages();
sRequest request = new sRequest(url).setIgnoreCache(ignoreCache);
// Since we don't allow any variance in cache time, we should just force the cache time
// globally. This ensures propagation to shared caches when this is set.
request.setCacheTtl((int)(refresh / 1000));
sResponse response = fetcher.fetch(request);
if (response.getHttpStatusCode() != (int)HttpStatusCode.OK)
{
throw new GadgetException(GadgetException.Code.FAILED_TO_RETRIEVE_CONTENT,
"Unable to retrieve message bundle xml. HTTP error " +
response.getHttpStatusCode());
}
MessageBundle bundle = new MessageBundle(locale, response.responseString);
return(bundle);
}
private GadgetSpec FetchObjectAndCache(Uri url, bool ignoreCache)
{
sRequest request = new sRequest(url)
.setIgnoreCache(ignoreCache)
.setGadget(url);
// Since we don't allow any variance in cache time, we should just force the cache time
// globally. This ensures propagation to shared caches when this is set.
request.setCacheTtl((int)(refresh / 1000));
sResponse response = fetcher.fetch(request);
if (response.getHttpStatusCode() != (int)HttpStatusCode.OK)
{
throw new GadgetException(GadgetException.Code.FAILED_TO_RETRIEVE_CONTENT,
"Unable to retrieve gadget xml. HTTP error " +
response.getHttpStatusCode());
}
GadgetSpec spec = new GadgetSpec(url, response.responseString);
HttpRuntime.Cache.Insert(url.ToString(), spec, null, System.Web.Caching.Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(refresh));
return(spec);
}
private sResponse fetchFromServer(sRequest request)
{
sResponse response = null;
try
{
response = fetcher.fetch(request);
if (response == null)
{
throw responseParams.oauthRequestException(OAuthError.UNKNOWN_PROBLEM,
"No response from server");
}
return(response);
}
catch (GadgetException e)
{
throw responseParams.oauthRequestException(
OAuthError.UNKNOWN_PROBLEM, "No response from server", e);
}
finally
{
responseParams.addRequestTrace(request, response);
}
}
/**
* Retrieves js content from the given url.
*
* @param url
* @param fetcher
* @return The contents of the JS file, or null if it can't be fetched.
* @throws GadgetException
*/
private static String LoadDataFromUrl(String url, IHttpFetcher fetcher)
{
// set up the request and response objects
Uri uri = Uri.parse(url);
sRequest request = new sRequest(uri);
sResponse response = fetcher.fetch(request);
if (response.getHttpStatusCode() == (int)HttpStatusCode.OK)
{
return response.responseString;
}
return null;
}