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      1 // Copyright (c) 2009 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 "chrome/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/breakpad_client.h"
     18 
     19 namespace {
     20 const DWORD kExceptionModuleNotFound = VcppException(ERROR_SEVERITY_ERROR,
     21                                                      ERROR_MOD_NOT_FOUND);
     22 const DWORD kExceptionEntryPtNotFound = VcppException(ERROR_SEVERITY_ERROR,
     23                                                       ERROR_PROC_NOT_FOUND);
     24 // This is defined in <ntstatus.h> but we can't include this file here.
     25 const DWORD FACILITY_GRAPHICS_KERNEL = 0x1E;
     26 const DWORD NT_STATUS_ENTRYPOINT_NOT_FOUND = 0xC0000139;
     27 const DWORD NT_STATUS_DLL_NOT_FOUND = 0xC0000135;
     28 
     29 // We assume that exception codes are NT_STATUS codes.
     30 DWORD FacilityFromException(DWORD exception_code) {
     31   return (exception_code >> 16) & 0x0FFF;
     32 }
     33 
     34 // This is not a generic function. It only works with some |nt_status| values.
     35 // Check the strings here http://msdn.microsoft.com/en-us/library/cc704588.aspx
     36 // before attempting to use this function.
     37 void RaiseHardErrorMsg(long nt_status, const std::string& p1,
     38                                        const std::string& p2) {
     39   // If headless just exit silently.
     40   if (breakpad::GetBreakpadClient()->IsRunningUnattended())
     41     return;
     42 
     43   HMODULE ntdll = ::GetModuleHandleA("NTDLL.DLL");
     44   wchar_t* msg_template = NULL;
     45   size_t count = ::FormatMessage(
     46       FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS |
     47       FORMAT_MESSAGE_FROM_HMODULE,
     48       ntdll,
     49       nt_status,
     50       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
     51       reinterpret_cast<wchar_t*>(&msg_template),
     52       0,
     53       NULL);
     54 
     55   if (!count)
     56     return;
     57   count += p1.size() + p2.size() + 1;
     58   string16 message;
     59   ::wsprintf(WriteInto(&message, count), msg_template, 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 #if defined(USE_AURA)
    107     RaiseHardErrorMsg(exception, std::string(), std::string());
    108     return true;
    109 #else
    110     return false;
    111 #endif
    112   }
    113   return false;
    114 }
    115