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https://github.com/veracrypt/VeraCrypt.git
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Add TrueCrypt 7.1a MacOSX/Linux specific source files.
This commit is contained in:
Mounir IDRASSI
274
src/Main/FatalErrorHandler.cpp
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274
src/Main/FatalErrorHandler.cpp
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/*
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Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
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Governed by the TrueCrypt License 3.0 the full text of which is contained in
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the file License.txt included in TrueCrypt binary and source code distribution
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packages.
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*/
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#include "System.h"
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#include <wx/stackwalk.h>
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#include "Main.h"
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#include "Application.h"
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#include "UserInterface.h"
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#include "GraphicUserInterface.h"
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#include "Volume/Crc32.h"
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#ifdef TC_UNIX
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#include <signal.h>
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#endif
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#ifdef TC_MACOSX
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# ifdef __ppc__
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# include <ppc/ucontext.h>
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# else
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# include <i386/ucontext.h>
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# endif
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#elif defined (TC_BSD)
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# include <ucontext.h>
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#endif
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#include "FatalErrorHandler.h"
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namespace TrueCrypt
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{
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static terminate_handler DefaultTerminateHandler;
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struct FatalErrorReport
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{
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bool UnhandledException;
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};
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#ifdef TC_UNIX
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static void OnFatalProgramErrorSignal (int, siginfo_t *signalInfo, void *contextArg)
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{
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TC_UNUSED_VAR ucontext_t *context = (ucontext_t *) contextArg;
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uint64 faultingInstructionAddress = 0;
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#ifdef TC_LINUX
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# ifdef REG_EIP
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faultingInstructionAddress = context->uc_mcontext.gregs[REG_EIP];
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# elif defined (REG_RIP)
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faultingInstructionAddress = context->uc_mcontext.gregs[REG_RIP];
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# endif
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#elif defined (TC_MACOSX)
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# ifdef __ppc__
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faultingInstructionAddress = context->uc_mcontext->ss.srr0;
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# elif defined (__x86_64__)
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faultingInstructionAddress = context->uc_mcontext->ss.rip;
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# else
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faultingInstructionAddress = context->uc_mcontext->ss.eip;
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# endif
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#endif
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wstringstream vars;
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vars << L"cpus=" << wxThread::GetCPUCount();
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vars << L"&cksum=" << hex << FatalErrorHandler::GetAppChecksum() << dec;
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vars << L"&err=" << signalInfo->si_signo;
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vars << L"&addr=" << hex << faultingInstructionAddress << dec;
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vars << FatalErrorHandler::GetCallStack (16);
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wxString url = Gui->GetHomepageLinkURL (L"err-report", true, vars.str());
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url.Replace (L"=0x", L"=");
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url.Replace (L"=0X0x", L"=0x");
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url.Replace (L"=0X", L"=0x");
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wxString msg = L"A critical error has occurred and TrueCrypt must be terminated. If this is caused by a bug in TrueCrypt, we would like to fix it. To help us, you can send us an automatically generated error report containing the following items:\n\n- Program version\n- Operating system version\n- Hardware architecture\n- Checksum of TrueCrypt executable\n- Error category\n- Error address\n";
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#if wxUSE_STACKWALKER == 1
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msg += L"- TrueCrypt call stack\n";
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#endif
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msg += L"\nIf you select 'Yes', the following URL (which contains the entire error report) will be opened in your default Internet browser.\n\n";
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#ifdef __WXGTK__
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wxString fUrl = url;
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fUrl.Replace (L"&st", L" &st");
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msg += fUrl;
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#else
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msg += url;
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#endif
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msg += L"\n\nDo you want to send us the error report?";
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if (Gui->AskYesNo (msg, true))
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wxLaunchDefaultBrowser (url, wxBROWSER_NEW_WINDOW);
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_exit (1);
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}
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#endif // TC_UNIX
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void FatalErrorHandler::Deregister()
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{
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#ifdef TC_UNIX
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signal (SIGILL, SIG_DFL);
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signal (SIGFPE, SIG_DFL);
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signal (SIGSEGV, SIG_DFL);
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signal (SIGBUS, SIG_DFL);
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signal (SIGSYS, SIG_DFL);
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#endif
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#ifndef TC_WINDOWS
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std::set_terminate (DefaultTerminateHandler);
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#endif
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}
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uint32 FatalErrorHandler::GetAppChecksum ()
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{
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uint32 checkSum = 0;
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try
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{
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File executable;
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executable.Open (Application::GetExecutablePath());
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Buffer executableData (executable.Length());
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executable.ReadCompleteBuffer (executableData);
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checkSum = Crc32::ProcessBuffer (executableData);
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}
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catch (...) { }
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return checkSum;
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}
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wstring FatalErrorHandler::GetCallStack (int depth)
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{
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#if wxUSE_STACKWALKER == 1
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class StackWalker : public wxStackWalker
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{
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public:
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StackWalker () : FrameCount (0) { }
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void OnStackFrame (const wxStackFrame &frame)
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{
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if (FrameCount >= 32)
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return;
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StackVars << L"&st" << FrameCount++ << L"=";
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wxString functionName = frame.GetName();
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if (!functionName.empty() && !frame.GetModule().empty())
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{
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int p = functionName.Find (L"(");
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if (p != wxNOT_FOUND)
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functionName = functionName.Mid (0, p);
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for (size_t i = 0; i < functionName.size(); ++i)
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{
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if (!isalnum (functionName[i]))
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functionName[i] = L'_';
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}
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while (functionName.Replace (L"__", L"_"));
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StackVars << wstring (functionName);
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}
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else
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StackVars << "0X" << hex << frame.GetAddress() << dec;
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}
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int FrameCount;
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wstringstream StackVars;
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};
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StackWalker stackWalker;
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stackWalker.Walk (2);
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return stackWalker.StackVars.str();
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#else // wxUSE_STACKWALKER
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return wstring();
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#endif // wxUSE_STACKWALKER
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}
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void FatalErrorHandler::OnTerminate ()
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{
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try
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{
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throw;
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}
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catch (UserAbort&)
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{
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}
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catch (Exception &e)
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{
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wxString vars;
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wxString exName = StringConverter::ToWide (StringConverter::GetTypeName (typeid (e)));
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if (exName.find (L"TrueCrypt::") != string::npos)
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exName = exName.Mid (11);
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wxString exPos = StringConverter::ToWide (e.what());
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if (exPos.find (L"TrueCrypt::") != string::npos)
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exPos = exPos.Mid (11);
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vars << L"cpus=" << wxThread::GetCPUCount();
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vars << wxString::Format (L"&cksum=%x", GetAppChecksum());
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vars << L"&exception=" << exName;
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vars << L"&exlocation=" << exPos;
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vars << FatalErrorHandler::GetCallStack (16);
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vars.Replace (L"::", L".");
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vars.Replace (L":", L".");
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wxString url = Gui->GetHomepageLinkURL (L"err-report", true, vars);
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url.Replace (L"=0x", L"=");
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url.Replace (L"=0X0x", L"=0x");
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url.Replace (L"=0X", L"=0x");
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wxString msg = L"An unhandled exception has occurred and TrueCrypt must be terminated. If this is caused by a bug in TrueCrypt, we would like to fix it. To help us, you can send us an automatically generated error report containing the following items:\n\n- Program version\n- Operating system version\n- Hardware architecture\n- Checksum of TrueCrypt executable\n- Error description\n- Error location\n";
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#if wxUSE_STACKWALKER == 1
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msg += L"- TrueCrypt call stack\n";
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#endif
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msg += L"\nIf you select 'Yes', the following URL (which contains the entire error report) will be opened in your default Internet browser.\n\n";
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#ifdef __WXGTK__
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wxString fUrl = url;
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fUrl.Replace (L"&st", L" &st");
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msg += fUrl;
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#else
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msg += url;
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#endif
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msg += L"\n\nDo you want to send us the error report?";
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if (Gui->AskYesNo (msg, true))
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wxLaunchDefaultBrowser (url, wxBROWSER_NEW_WINDOW);
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}
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catch (exception &e)
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{
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Gui->ShowError (e);
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}
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catch (...)
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{
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Gui->ShowError (_("Unknown exception occurred."));
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}
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_exit (1);
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}
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void FatalErrorHandler::Register ()
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{
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#ifndef TC_WINDOWS
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// OnUnhandledException() seems to be called only on Windows
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DefaultTerminateHandler = std::set_terminate (OnTerminate);
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#endif
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#ifdef TC_UNIX
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struct sigaction action;
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Memory::Zero (&action, sizeof (action));
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action.sa_flags = SA_SIGINFO;
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action.sa_sigaction = OnFatalProgramErrorSignal;
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throw_sys_if (sigaction (SIGILL, &action, nullptr) == -1);
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throw_sys_if (sigaction (SIGFPE, &action, nullptr) == -1);
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throw_sys_if (sigaction (SIGSEGV, &action, nullptr) == -1);
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throw_sys_if (sigaction (SIGBUS, &action, nullptr) == -1);
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throw_sys_if (sigaction (SIGSYS, &action, nullptr) == -1);
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#endif
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}
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}
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