diff -r 000000000000 -r 6474c204b198 browser/components/about/AboutRedirector.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/components/about/AboutRedirector.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,180 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// See also: docshell/base/nsAboutRedirector.cpp
+
+#include "AboutRedirector.h"
+#include "nsNetUtil.h"
+#include "nsIScriptSecurityManager.h"
+#include "mozilla/ArrayUtils.h"
+
+namespace mozilla {
+namespace browser {
+
+NS_IMPL_ISUPPORTS(AboutRedirector, nsIAboutModule)
+
+struct RedirEntry {
+  const char* id;
+  const char* url;
+  uint32_t flags;
+};
+
+/*
+  Entries which do not have URI_SAFE_FOR_UNTRUSTED_CONTENT will run with chrome
+  privileges. This is potentially dangerous. Please use
+  URI_SAFE_FOR_UNTRUSTED_CONTENT in the third argument to each map item below
+  unless your about: page really needs chrome privileges. Security review is
+  required before adding new map entries without
+  URI_SAFE_FOR_UNTRUSTED_CONTENT.  Also note, however, that adding
+  URI_SAFE_FOR_UNTRUSTED_CONTENT will allow random web sites to link to that
+  URI.  Perhaps we should separate the two concepts out...
+ */
+static RedirEntry kRedirMap[] = {
+#ifdef MOZ_SAFE_BROWSING
+  { "blocked", "chrome://browser/content/blockedSite.xhtml",
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT |
+    nsIAboutModule::HIDE_FROM_ABOUTABOUT },
+#endif
+  { "certerror", "chrome://browser/content/certerror/aboutCertError.xhtml",
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT |
+    nsIAboutModule::HIDE_FROM_ABOUTABOUT },
+  { "socialerror", "chrome://browser/content/aboutSocialError.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT |
+    nsIAboutModule::HIDE_FROM_ABOUTABOUT },
+  { "tabcrashed", "chrome://browser/content/aboutTabCrashed.xhtml",
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT |
+    nsIAboutModule::HIDE_FROM_ABOUTABOUT },
+  { "feeds", "chrome://browser/content/feeds/subscribe.xhtml",
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT |
+    nsIAboutModule::HIDE_FROM_ABOUTABOUT },
+  { "privatebrowsing", "chrome://browser/content/aboutPrivateBrowsing.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "rights",
+#ifdef MOZ_OFFICIAL_BRANDING
+    "chrome://global/content/aboutRights.xhtml",
+#else
+    "chrome://global/content/aboutRights-unbranded.xhtml",
+#endif
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "robots", "chrome://browser/content/aboutRobots.xhtml",
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "sessionrestore", "chrome://browser/content/aboutSessionRestore.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "welcomeback", "chrome://browser/content/aboutWelcomeBack.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT },
+#ifdef MOZ_SERVICES_SYNC
+  { "sync-progress", "chrome://browser/content/sync/progress.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "sync-tabs", "chrome://browser/content/sync/aboutSyncTabs.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+#endif
+  { "home", "chrome://browser/content/abouthome/aboutHome.xhtml",
+    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "newtab", "chrome://browser/content/newtab/newTab.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "permissions", "chrome://browser/content/preferences/aboutPermissions.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "preferences", "chrome://browser/content/preferences/in-content/preferences.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "downloads", "chrome://browser/content/downloads/contentAreaDownloadsView.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+#ifdef MOZ_SERVICES_HEALTHREPORT
+  { "healthreport", "chrome://browser/content/abouthealthreport/abouthealth.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT },
+#endif
+  { "accounts", "chrome://browser/content/aboutaccounts/aboutaccounts.xhtml",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "app-manager", "chrome://browser/content/devtools/app-manager/index.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+  { "customizing", "chrome://browser/content/customizableui/aboutCustomizing.xul",
+    nsIAboutModule::ALLOW_SCRIPT },
+};
+static const int kRedirTotal = ArrayLength(kRedirMap);
+
+static nsAutoCString
+GetAboutModuleName(nsIURI *aURI)
+{
+  nsAutoCString path;
+  aURI->GetPath(path);
+
+  int32_t f = path.FindChar('#');
+  if (f >= 0)
+    path.SetLength(f);
+
+  f = path.FindChar('?');
+  if (f >= 0)
+    path.SetLength(f);
+
+  ToLowerCase(path);
+  return path;
+}
+
+NS_IMETHODIMP
+AboutRedirector::NewChannel(nsIURI *aURI, nsIChannel **result) 
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+  NS_ASSERTION(result, "must not be null");
+
+  nsAutoCString path = GetAboutModuleName(aURI);
+
+  nsresult rv;
+  nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (int i = 0; i < kRedirTotal; i++) {
+    if (!strcmp(path.get(), kRedirMap[i].id)) {
+      nsCOMPtr<nsIChannel> tempChannel;
+      rv = ioService->NewChannel(nsDependentCString(kRedirMap[i].url),
+                                 nullptr, nullptr, getter_AddRefs(tempChannel));
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      tempChannel->SetOriginalURI(aURI);
+
+      NS_ADDREF(*result = tempChannel);
+      return rv;
+    }
+  }
+
+  return NS_ERROR_ILLEGAL_VALUE;
+}
+
+NS_IMETHODIMP
+AboutRedirector::GetURIFlags(nsIURI *aURI, uint32_t *result)
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+
+  nsAutoCString name = GetAboutModuleName(aURI);
+
+  for (int i = 0; i < kRedirTotal; i++) {
+    if (name.Equals(kRedirMap[i].id)) {
+      *result = kRedirMap[i].flags;
+      return NS_OK;
+    }
+  }
+
+  return NS_ERROR_ILLEGAL_VALUE;
+}
+
+nsresult
+AboutRedirector::Create(nsISupports *aOuter, REFNSIID aIID, void **result)
+{
+  AboutRedirector* about = new AboutRedirector();
+  if (about == nullptr)
+    return NS_ERROR_OUT_OF_MEMORY;
+  NS_ADDREF(about);
+  nsresult rv = about->QueryInterface(aIID, result);
+  NS_RELEASE(about);
+  return rv;
+}
+
+} // namespace browser
+} // namespace mozilla