components/crash/app/hard_error_handler_win.cc

   1 // Copyright 2013 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 #include "components/crash/app/hard_error_handler_win.h"
   6
   7 #include <DelayIMP.h>
   8 #include <winternl.h>
   9
  10 #include "base/basictypes.h"
  11 #include "base/strings/string_util.h"
  12 #include "components/crash/app/crash_reporter_client.h"
  13
  14 namespace breakpad {
  15
  16 using crash_reporter::GetCrashReporterClient;
  17
  18 namespace {
  19 const DWORD kExceptionModuleNotFound = VcppException(ERROR_SEVERITY_ERROR,
  20                                                      ERROR_MOD_NOT_FOUND);
  21 const DWORD kExceptionEntryPtNotFound = VcppException(ERROR_SEVERITY_ERROR,
  22                                                       ERROR_PROC_NOT_FOUND);
  23 // This is defined in <ntstatus.h> but we can't include this file here.
  24 const DWORD FACILITY_GRAPHICS_KERNEL = 0x1E;
  25 const DWORD NT_STATUS_ENTRYPOINT_NOT_FOUND = 0xC0000139;
  26 const DWORD NT_STATUS_DLL_NOT_FOUND = 0xC0000135;
  27
  28 // We assume that exception codes are NT_STATUS codes.
  29 DWORD FacilityFromException(DWORD exception_code) {
  30   return (exception_code >> 16) & 0x0FFF;
  31 }
  32
  33 // This is not a generic function. It only works with some |nt_status| values.
  34 // Check the strings here http://msdn.microsoft.com/en-us/library/cc704588.aspx
  35 // before attempting to use this function.
  36 void RaiseHardErrorMsg(long nt_status, const std::string& p1,
  37                                        const std::string& p2) {
  38   // If headless just exit silently.
  39   if (GetCrashReporterClient()->IsRunningUnattended())
  40     return;
  41
  42   HMODULE ntdll = ::GetModuleHandleA("NTDLL.DLL");
  43   wchar_t* msg_template = NULL;
  44   size_t count = ::FormatMessage(
  45       FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS |
  46       FORMAT_MESSAGE_FROM_HMODULE,
  47       ntdll,
  48       nt_status,
  49       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
  50       reinterpret_cast<wchar_t*>(&msg_template),
  51       0,
  52       NULL);
  53
  54   if (!count)
  55     return;
  56   count += p1.size() + p2.size() + 1;
  57   base::string16 message;
  58   ::wsprintf(base::WriteInto(&message, count), msg_template,
  59              p1.c_str(), p2.c_str());
  60   // The MB_SERVICE_NOTIFICATION causes this message to be displayed by
  61   // csrss. This means that we are not creating windows or pumping WM messages
  62   // in this process.
  63   ::MessageBox(NULL, message.c_str(),
  64                L"chrome.exe",
  65                MB_OK | MB_SERVICE_NOTIFICATION);
  66   ::LocalFree(msg_template);
  67 }
  68
  69 void ModuleNotFoundHardError(const EXCEPTION_RECORD* ex_record) {
  70   DelayLoadInfo* dli = reinterpret_cast<DelayLoadInfo*>(
  71       ex_record->ExceptionInformation[0]);
  72   if (!dli->szDll)
  73     return;
  74   RaiseHardErrorMsg(NT_STATUS_DLL_NOT_FOUND, dli->szDll, std::string());
  75 }
  76
  77 void EntryPointNotFoundHardError(const EXCEPTION_RECORD* ex_record) {
  78   DelayLoadInfo* dli = reinterpret_cast<DelayLoadInfo*>(
  79       ex_record->ExceptionInformation[0]);
  80   if (!dli->dlp.fImportByName)
  81     return;
  82   if (!dli->dlp.szProcName)
  83     return;
  84   if (!dli->szDll)
  85     return;
  86   RaiseHardErrorMsg(NT_STATUS_ENTRYPOINT_NOT_FOUND,
  87       dli->dlp.szProcName, dli->szDll);
  88 }
  89
  90 }  // namespace
  91
  92 bool HardErrorHandler(EXCEPTION_POINTERS* ex_info) {
  93   if (!ex_info)
  94     return false;
  95   if (!ex_info->ExceptionRecord)
  96     return false;
  97
  98   long exception = ex_info->ExceptionRecord->ExceptionCode;
  99   if (exception == kExceptionModuleNotFound) {
 100     ModuleNotFoundHardError(ex_info->ExceptionRecord);
 101     return true;
 102   } else if (exception == kExceptionEntryPtNotFound) {
 103     EntryPointNotFoundHardError(ex_info->ExceptionRecord);
 104     return true;
 105   } else if (FacilityFromException(exception) == FACILITY_GRAPHICS_KERNEL) {
 106     RaiseHardErrorMsg(exception, std::string(), std::string());
 107     return true;
 108   }
 109   return false;
 110 }
 111
 112 }  // namespace breakpad