Chrome proxy refactoring.

chrome/service/cloud_print/cloud_print_url_fetcher.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/service/cloud_print/cloud_print_url_fetcher.h"
 
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/common/net/http_return.h"
 #include "chrome/service/cloud_print/cloud_print_consts.h"
 #include "chrome/service/cloud_print/cloud_print_helpers.h"
 #include "chrome/service/cloud_print/cloud_print_token_store.h"
 #include "chrome/service/net/service_url_request_context.h"
 #include "chrome/service/service_process.h"
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_request_status.h"
 
+const int kHTTPUnsupportedMediaType = 415;
+
 CloudPrintURLFetcher::CloudPrintURLFetcher()
     : delegate_(NULL),
       num_retries_(0) {
 }
 
+bool CloudPrintURLFetcher::IsSameRequest(const URLFetcher* source) {
+  return (request_.get() == source);
+}
+
 void CloudPrintURLFetcher::StartGetRequest(
     const GURL& url,
     Delegate* delegate,
     int max_retries,
     const std::string& additional_headers) {
   StartRequestHelper(url,
                      URLFetcher::GET,
                      delegate,
                      max_retries,
                      std::string(),
@@ skipping 28 matching lines @@
   VLOG(1) << "CP_PROXY: OnURLFetchComplete, url: " << url
           << ", response code: " << response_code;
   // Make sure we stay alive through the body of this function.
   scoped_refptr<CloudPrintURLFetcher> keep_alive(this);
   ResponseAction action = delegate_->HandleRawResponse(source,
                                                        url,
                                                        status,
                                                        response_code,
                                                        cookies,
                                                        data);
+
+  // If we get auth error, notify delegate and check if it wants to procceed.
+  if (action == CONTINUE_PROCESSING && RC_FORBIDDEN == response_code) {
+    action = delegate_->OnRequestAuthError();
+  }
+
   if (action == CONTINUE_PROCESSING) {
-    // If we are not using an OAuth token, and we got an auth error, we are
-    // done. Else, the token may have been refreshed. Let us try again.
-    if ((RC_FORBIDDEN == response_code) &&
-        (!CloudPrintTokenStore::current() ||
-         !CloudPrintTokenStore::current()->token_is_oauth())) {
-      delegate_->OnRequestAuthError();
-      return;
-    }
     // We need to retry on all network errors.
     if (!status.is_success() || (response_code != 200))
       action = RETRY_REQUEST;
     else
       action = delegate_->HandleRawData(source, url, data);
 
     if (action == CONTINUE_PROCESSING) {
       // If the delegate is not interested in handling the raw response data,
       // we assume that a JSON response is expected. If we do not get a JSON
       // response, we will retry (to handle the case where we got redirected
@@ skipping 11 matching lines @@
     }
   }
   // Retry the request if needed.
   if (action == RETRY_REQUEST) {
     // Explicitly call ReceivedContentWasMalformed() to ensure the current
     // request gets counted as a failure for calculation of the back-off
     // period.  If it was already a failure by status code, this call will
     // be ignored.
     request_->ReceivedContentWasMalformed();
 
+    // If we receive error code from the server "Media Type Not Supported",
+    // there is no reasons to retry, request will never succeed.
+    // In that case we should call OnRequestGiveUp() right away.
+    if (response_code == kHTTPUnsupportedMediaType)
+      num_retries_ = source->max_retries();
+
     ++num_retries_;
     if ((-1 != source->max_retries()) &&
         (num_retries_ > source->max_retries())) {
       // Retry limit reached. Give up.
       delegate_->OnRequestGiveUp();
     } else {
       // Either no retry limit specified or retry limit has not yet been
       // reached. Try again. Set up the request headers again because the token
       // may have changed.
       SetupRequestHeaders();
@@ skipping 11 matching lines @@
     const std::string& post_data,
     const std::string& additional_headers) {
   DCHECK(delegate);
   // Persist the additional headers in case we need to retry the request.
   additional_headers_ = additional_headers;
   request_.reset(new URLFetcher(url, request_type, this));
   request_->set_request_context(GetRequestContextGetter());
   // Since we implement our own retry logic, disable the retry in URLFetcher.
   request_->set_automatically_retry_on_5xx(false);
   request_->set_max_retries(max_retries);
+  delegate_ = delegate;
   SetupRequestHeaders();
-  delegate_ = delegate;
   if (request_type == URLFetcher::POST) {
     request_->set_upload_data(post_data_mime_type, post_data);
   }
 
   request_->Start();
 }
 
 void CloudPrintURLFetcher::SetupRequestHeaders() {
-  std::string headers;
-  CloudPrintTokenStore* token_store = CloudPrintTokenStore::current();
-  if (token_store) {
-    headers = token_store->token_is_oauth() ?
-        "Authorization: OAuth " : "Authorization: GoogleLogin auth=";
-    headers += token_store->token();
+  std::string headers = delegate_->GetAuthHeader();
+  if (!headers.empty())
     headers += "\r\n";
-  }
   headers += kChromeCloudPrintProxyHeader;
   if (!additional_headers_.empty()) {
     headers += "\r\n";
     headers += additional_headers_;
   }
   request_->set_extra_request_headers(headers);
 }
 
 CloudPrintURLFetcher::~CloudPrintURLFetcher() {}
 
 net::URLRequestContextGetter* CloudPrintURLFetcher::GetRequestContextGetter() {
   ServiceURLRequestContextGetter* getter =
       g_service_process->GetServiceURLRequestContextGetter();
   // Now set up the user agent for cloudprint.
   std::string user_agent = getter->user_agent();
   base::StringAppendF(&user_agent, " %s", kCloudPrintUserAgent);
   getter->set_user_agent(user_agent);
   return getter;
 }