Show Captcha dialog.

chrome/browser/chromeos/login/image_downloader.cc

+// Copyright (c) 2010 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/browser/chromeos/login/image_downloader.h"
+
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/profile_manager.h"
+#include "chrome/common/net/url_fetcher.h"
+
+namespace chromeos {
+
+namespace {
+
+// Template for optional authorization header.
+const char kAuthorizationHeader[] = "Authorization: GoogleLogin auth=%s";
+
+}  // namespace
+
+ImageDownloader::ImageDownloader(ImageDecoder::Delegate* delegate,
+                                 const GURL& image_url,
+                                 const std::string& auth_token)
+    : delegate_(delegate) {
+  DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
+  image_fetcher_.reset(new URLFetcher(GURL(image_url), URLFetcher::GET, this));
+  image_fetcher_->set_request_context(
+      ProfileManager::GetDefaultProfile()->GetRequestContext());
+  if (!auth_token.empty()) {
+    image_fetcher_->set_extra_request_headers(
+        StringPrintf(kAuthorizationHeader, auth_token.c_str()));
+  }
+  image_fetcher_->Start();
+}
+
+void ImageDownloader::OnURLFetchComplete(const URLFetcher* source,
+                                         const GURL& url,
+                                         const URLRequestStatus& status,
+                                         int response_code,
+                                         const ResponseCookies& cookies,
+                                         const std::string& data) {
+  DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
+  if (response_code != 200) {
+    LOG(ERROR) << "Response code is " << response_code;
+    LOG(ERROR) << "Url is " << url.spec();
+    LOG(ERROR) << "Data is " << data;
+    MessageLoop::current()->DeleteSoon(FROM_HERE, this);
+    return;
+  }
+
+  LOG(INFO) << "Decoding the image...";
+  std::vector<unsigned char> image_data(data.begin(), data.end());
+  scoped_refptr<ImageDecoder> image_decoder = new ImageDecoder(delegate_,
+                                                               image_data);
+  image_decoder->Start();
+  MessageLoop::current()->DeleteSoon(FROM_HERE, this);
+}
+
+}  // namespace chromeos
+