extensions/browser/bad_message.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_BROWSER_BAD_MESSAGE_H_
   6 #define EXTENSIONS_BROWSER_BAD_MESSAGE_H_
   7
   8 namespace content {
   9 class RenderProcessHost;
  10 }
  11
  12 namespace extensions {
  13 namespace bad_message {
  14
  15 // The browser process often chooses to terminate a renderer if it receives
  16 // a bad IPC message. The reasons are tracked for metrics.
  17 //
  18 // See also content/browser/bad_message.h.
  19 //
  20 // NOTE: Do not remove or reorder elements in this list. Add new entries at the
  21 // end. Items may be renamed but do not change the values. We rely on the enum
  22 // values in histograms. Also update histograms.xml with any new values.
  23 enum BadMessageReason {
  24   EOG_BAD_ORIGIN = 0,
  25   EVG_BAD_ORIGIN = 1,
  26   BH_BLOB_NOT_OWNED = 2,
  27   EH_BAD_EVENT_ID = 3,
  28   // Please add new elements here. The naming convention is abbreviated class
  29   // name (e.g. ExtensionHost becomes EH) plus a unique description of the
  30   // reason.
  31   BAD_MESSAGE_MAX
  32 };
  33
  34 // Called when the browser receives a bad IPC message from an extension process.
  35 // Logs the event, records a histogram metric for the |reason|, and terminates
  36 // the process for |host|.
  37 void ReceivedBadMessage(content::RenderProcessHost* host,
  38                         BadMessageReason reason);
  39
  40 }  // bad_message
  41 }  // namespace extensions
  42
  43 #endif  // EXTENSIONS_BROWSER_BAD_MESSAGE_H_