Add support for gcf:about:plugins in chrome frame full tab mode. The URL vali...

chrome_frame/navigation_constraints.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_frame/navigation_constraints.h"
+
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/common/url_constants.h"
+#include "chrome_frame/utils.h"
+
+// NavigationConstraintsImpl method definitions.
+bool NavigationConstraintsImpl::AllowUnsafeUrls() {
+  // No sanity checks if unsafe URLs are allowed
+  return GetConfigBool(false, kAllowUnsafeURLs);
+}
+
+bool NavigationConstraintsImpl::IsSchemeAllowed(const GURL& url) {
+  if (url.is_empty())
+    return false;
+
+  if (!url.is_valid())
+    return false;
+
+  if (url.SchemeIs(chrome::kHttpScheme) ||
+      url.SchemeIs(chrome::kHttpsScheme))
+    return true;
+
+  // Additional checking for view-source. Allow only http and https
+  // URLs in view source.
+  if (url.SchemeIs(chrome::kViewSourceScheme)) {
+    GURL sub_url(url.path());
+    if (sub_url.SchemeIs(chrome::kHttpScheme) ||
+        sub_url.SchemeIs(chrome::kHttpsScheme))
+      return true;
+  }
+
+  // Allow only about:blank or about:version
+  if (url.SchemeIs(chrome::kAboutScheme)) {
+    if (LowerCaseEqualsASCII(url.spec(), chrome::kAboutBlankURL) ||
+        LowerCaseEqualsASCII(url.spec(), chrome::kAboutVersionURL)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+bool NavigationConstraintsImpl::IsZoneAllowed(const GURL& url) {
+  if (!security_manager_) {
+    HRESULT hr = security_manager_.CreateInstance(
+        CLSID_InternetSecurityManager);
+    if (FAILED(hr)) {
+      NOTREACHED() << __FUNCTION__
+                   << " Failed to create SecurityManager. Error: 0x%x"
+                   << hr;
+      return true;
+    }
+    DWORD zone = URLZONE_INVALID;
+    std::wstring unicode_url = UTF8ToWide(url.spec());
+    security_manager_->MapUrlToZone(unicode_url.c_str(), &zone, 0);
+    if (zone == URLZONE_UNTRUSTED) {
+      DLOG(WARNING) << __FUNCTION__
+                    << " Disallowing navigation to restricted url: " << url;
+      return false;
+    }
+  }
+  return true;
+}
+