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      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/breakpad/app/hard_error_handler_win.h"
      6 
      7 #if defined(_WIN32_WINNT_WIN8) && _MSC_VER < 1700
      8 // The Windows 8 SDK defines FACILITY_VISUALCPP in winerror.h, and in
      9 // delayimp.h previous to VS2012.
     10 #undef FACILITY_VISUALCPP
     11 #endif
     12 #include <DelayIMP.h>
     13 #include <winternl.h>
     14 
     15 #include "base/basictypes.h"
     16 #include "base/strings/string_util.h"
     17 #include "components/breakpad/app/breakpad_client.h"
     18 
     19 namespace breakpad {
     20 
     21 namespace {
     22 const DWORD kExceptionModuleNotFound = VcppException(ERROR_SEVERITY_ERROR,
     23                                                      ERROR_MOD_NOT_FOUND);
     24 const DWORD kExceptionEntryPtNotFound = VcppException(ERROR_SEVERITY_ERROR,
     25                                                       ERROR_PROC_NOT_FOUND);
     26 // This is defined in <ntstatus.h> but we can't include this file here.
     27 const DWORD FACILITY_GRAPHICS_KERNEL = 0x1E;
     28 const DWORD NT_STATUS_ENTRYPOINT_NOT_FOUND = 0xC0000139;
     29 const DWORD NT_STATUS_DLL_NOT_FOUND = 0xC0000135;
     30 
     31 // We assume that exception codes are NT_STATUS codes.
     32 DWORD FacilityFromException(DWORD exception_code) {
     33   return (exception_code >> 16) & 0x0FFF;
     34 }
     35 
     36 // This is not a generic function. It only works with some |nt_status| values.
     37 // Check the strings here http://msdn.microsoft.com/en-us/library/cc704588.aspx
     38 // before attempting to use this function.
     39 void RaiseHardErrorMsg(long nt_status, const std::string& p1,
     40                                        const std::string& p2) {
     41   // If headless just exit silently.
     42   if (GetBreakpadClient()->IsRunningUnattended())
     43     return;
     44 
     45   HMODULE ntdll = ::GetModuleHandleA("NTDLL.DLL");
     46   wchar_t* msg_template = NULL;
     47   size_t count = ::FormatMessage(
     48       FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS |
     49       FORMAT_MESSAGE_FROM_HMODULE,
     50       ntdll,
     51       nt_status,
     52       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
     53       reinterpret_cast<wchar_t*>(&msg_template),
     54       0,
     55       NULL);
     56 
     57   if (!count)
     58     return;
     59   count += p1.size() + p2.size() + 1;
     60   base::string16 message;
     61   ::wsprintf(WriteInto(&message, count), msg_template, p1.c_str(), p2.c_str());
     62   // The MB_SERVICE_NOTIFICATION causes this message to be displayed by
     63   // csrss. This means that we are not creating windows or pumping WM messages
     64   // in this process.
     65   ::MessageBox(NULL, message.c_str(),
     66                L"chrome.exe",
     67                MB_OK | MB_SERVICE_NOTIFICATION);
     68   ::LocalFree(msg_template);
     69 }
     70 
     71 void ModuleNotFoundHardError(const EXCEPTION_RECORD* ex_record) {
     72   DelayLoadInfo* dli = reinterpret_cast<DelayLoadInfo*>(
     73       ex_record->ExceptionInformation[0]);
     74   if (!dli->szDll)
     75     return;
     76   RaiseHardErrorMsg(NT_STATUS_DLL_NOT_FOUND, dli->szDll, std::string());
     77 }
     78 
     79 void EntryPointNotFoundHardError(const EXCEPTION_RECORD* ex_record) {
     80   DelayLoadInfo* dli = reinterpret_cast<DelayLoadInfo*>(
     81       ex_record->ExceptionInformation[0]);
     82   if (!dli->dlp.fImportByName)
     83     return;
     84   if (!dli->dlp.szProcName)
     85     return;
     86   if (!dli->szDll)
     87     return;
     88   RaiseHardErrorMsg(NT_STATUS_ENTRYPOINT_NOT_FOUND,
     89       dli->dlp.szProcName, dli->szDll);
     90 }
     91 
     92 }  // namespace
     93 
     94 bool HardErrorHandler(EXCEPTION_POINTERS* ex_info) {
     95   if (!ex_info)
     96     return false;
     97   if (!ex_info->ExceptionRecord)
     98     return false;
     99 
    100   long exception = ex_info->ExceptionRecord->ExceptionCode;
    101   if (exception == kExceptionModuleNotFound) {
    102     ModuleNotFoundHardError(ex_info->ExceptionRecord);
    103     return true;
    104   } else if (exception == kExceptionEntryPtNotFound) {
    105     EntryPointNotFoundHardError(ex_info->ExceptionRecord);
    106     return true;
    107   } else if (FacilityFromException(exception) == FACILITY_GRAPHICS_KERNEL) {
    108 #if defined(USE_AURA)
    109     RaiseHardErrorMsg(exception, std::string(), std::string());
    110     return true;
    111 #else
    112     return false;
    113 #endif
    114   }
    115   return false;
    116 }
    117 
    118 }  // namespace breakpad
    119