Open a login tab on captive portal detection on SSL loads.

chrome/browser/captive_portal/captive_portal_tab_observer.cc

+// Copyright (c) 2012 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/captive_portal/captive_portal_tab_observer.h"
+
+#include "chrome/browser/captive_portal/captive_portal_tab_helper.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/net_errors.h"
+
+namespace captive_portal {
+
+CaptivePortalTabObserver::CaptivePortalTabObserver(
+    CaptivePortalTabHelper* tab_helper,
+    content::WebContents* web_contents)
+    : content::WebContentsObserver(web_contents),
+      tab_helper_(tab_helper),
+      pending_error_code_(net::OK) {
+}
+
+CaptivePortalTabObserver::~CaptivePortalTabObserver() {
+}
+
+void CaptivePortalTabObserver::DidStartProvisionalLoadForFrame(
+    int64 frame_id,
+    bool is_main_frame,
+    const GURL& validated_url,
+    bool is_error_page,
+    content::RenderViewHost* render_view_host) {
+  // Ignore subframes.
+  if (!is_main_frame)
+    return;
+
+  // If loading an error page for a previous failure, treat this as part of
+  // the previous load.  The second check is needed because Link Doctor pages
+  // result in two error page provisional loads in a row.  Currently, the
+  // second load is treated as a normal load, rather than reusing old error
+  // codes.
+  if (is_error_page && pending_error_code_ != net::OK)
+    return;
+
+  // Makes the second load for Link Doctor pages act as a normal load.
+  // TODO(mmenke):  Figure out if this affects any other cases.
+  pending_error_code_ = net::OK;
+
+  tab_helper_->OnLoadStart(validated_url.SchemeIsSecure());
+}
+
+void CaptivePortalTabObserver::DidCommitProvisionalLoadForFrame(
+    int64 frame_id,
+    bool is_main_frame,
+    const GURL& url,
+    content::PageTransition transition_type,
+    content::RenderViewHost* render_view_host) {
+  // Ignore subframes.
+  if (!is_main_frame)
+    return;
+
+  tab_helper_->OnLoadCommitted(pending_error_code_);
+  pending_error_code_ = net::OK;
+}
+
+void CaptivePortalTabObserver::DidFailProvisionalLoad(
+    int64 frame_id,
+    bool is_main_frame,
+    const GURL& validated_url,
+    int error_code,
+    const string16& error_description,
+    content::RenderViewHost* render_view_host) {
+  // Ignore subframes.
+  if (!is_main_frame)
+    return;
+
+  // Aborts generally aren't followed by loading an error page, so go ahead and
+  // reset the state. now, to prevent any captive portal checks from triggering.
+  if (error_code == net::ERR_ABORTED) {
+    // May have been aborting the load of an error page.
+    pending_error_code_ = net::OK;
+
+    tab_helper_->OnAbort();
+    return;
+  }
+
+  pending_error_code_ = error_code;
+}
+
+void CaptivePortalTabObserver::DidStopLoading() {
+  tab_helper_->OnStopLoading();
+}
+
+}  // namespace captive_portal