VeraCrypt
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-rw-r--r--src/Main/FatalErrorHandler.cpp274
1 files changed, 274 insertions, 0 deletions
diff --git a/src/Main/FatalErrorHandler.cpp b/src/Main/FatalErrorHandler.cpp
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+++ b/src/Main/FatalErrorHandler.cpp
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+/*
+ Copyright (c) 2008-2009 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#include "System.h"
+#include <wx/stackwalk.h>
+
+#include "Main.h"
+#include "Application.h"
+#include "UserInterface.h"
+#include "GraphicUserInterface.h"
+#include "Volume/Crc32.h"
+
+#ifdef TC_UNIX
+#include <signal.h>
+#endif
+
+#ifdef TC_MACOSX
+# ifdef __ppc__
+# include <ppc/ucontext.h>
+# else
+# include <i386/ucontext.h>
+# endif
+#elif defined (TC_BSD)
+# include <ucontext.h>
+#endif
+
+#include "FatalErrorHandler.h"
+
+namespace TrueCrypt
+{
+ static terminate_handler DefaultTerminateHandler;
+
+ struct FatalErrorReport
+ {
+ bool UnhandledException;
+ };
+
+#ifdef TC_UNIX
+ static void OnFatalProgramErrorSignal (int, siginfo_t *signalInfo, void *contextArg)
+ {
+ TC_UNUSED_VAR ucontext_t *context = (ucontext_t *) contextArg;
+ uint64 faultingInstructionAddress = 0;
+
+#ifdef TC_LINUX
+# ifdef REG_EIP
+ faultingInstructionAddress = context->uc_mcontext.gregs[REG_EIP];
+# elif defined (REG_RIP)
+ faultingInstructionAddress = context->uc_mcontext.gregs[REG_RIP];
+# endif
+
+#elif defined (TC_MACOSX)
+# ifdef __ppc__
+ faultingInstructionAddress = context->uc_mcontext->ss.srr0;
+# elif defined (__x86_64__)
+ faultingInstructionAddress = context->uc_mcontext->ss.rip;
+# else
+ faultingInstructionAddress = context->uc_mcontext->ss.eip;
+# endif
+
+#endif
+ wstringstream vars;
+
+ vars << L"cpus=" << wxThread::GetCPUCount();
+ vars << L"&cksum=" << hex << FatalErrorHandler::GetAppChecksum() << dec;
+ vars << L"&err=" << signalInfo->si_signo;
+ vars << L"&addr=" << hex << faultingInstructionAddress << dec;
+ vars << FatalErrorHandler::GetCallStack (16);
+
+ wxString url = Gui->GetHomepageLinkURL (L"err-report", true, vars.str());
+ url.Replace (L"=0x", L"=");
+ url.Replace (L"=0X0x", L"=0x");
+ url.Replace (L"=0X", L"=0x");
+
+ 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";
+#if wxUSE_STACKWALKER == 1
+ msg += L"- TrueCrypt call stack\n";
+#endif
+ 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";
+
+#ifdef __WXGTK__
+ wxString fUrl = url;
+ fUrl.Replace (L"&st", L" &st");
+ msg += fUrl;
+#else
+ msg += url;
+#endif
+
+ msg += L"\n\nDo you want to send us the error report?";
+
+ if (Gui->AskYesNo (msg, true))
+ wxLaunchDefaultBrowser (url, wxBROWSER_NEW_WINDOW);
+
+ _exit (1);
+ }
+#endif // TC_UNIX
+
+ void FatalErrorHandler::Deregister()
+ {
+#ifdef TC_UNIX
+ signal (SIGILL, SIG_DFL);
+ signal (SIGFPE, SIG_DFL);
+ signal (SIGSEGV, SIG_DFL);
+ signal (SIGBUS, SIG_DFL);
+ signal (SIGSYS, SIG_DFL);
+#endif
+
+#ifndef TC_WINDOWS
+ std::set_terminate (DefaultTerminateHandler);
+#endif
+ }
+
+ uint32 FatalErrorHandler::GetAppChecksum ()
+ {
+ uint32 checkSum = 0;
+ try
+ {
+ File executable;
+ executable.Open (Application::GetExecutablePath());
+
+ Buffer executableData (executable.Length());
+ executable.ReadCompleteBuffer (executableData);
+ checkSum = Crc32::ProcessBuffer (executableData);
+ }
+ catch (...) { }
+
+ return checkSum;
+ }
+
+ wstring FatalErrorHandler::GetCallStack (int depth)
+ {
+#if wxUSE_STACKWALKER == 1
+
+ class StackWalker : public wxStackWalker
+ {
+ public:
+ StackWalker () : FrameCount (0) { }
+
+ void OnStackFrame (const wxStackFrame &frame)
+ {
+ if (FrameCount >= 32)
+ return;
+
+ StackVars << L"&st" << FrameCount++ << L"=";
+
+ wxString functionName = frame.GetName();
+ if (!functionName.empty() && !frame.GetModule().empty())
+ {
+ int p = functionName.Find (L"(");
+ if (p != wxNOT_FOUND)
+ functionName = functionName.Mid (0, p);
+
+ for (size_t i = 0; i < functionName.size(); ++i)
+ {
+ if (!isalnum (functionName[i]))
+ functionName[i] = L'_';
+ }
+
+ while (functionName.Replace (L"__", L"_"));
+
+ StackVars << wstring (functionName);
+ }
+ else
+ StackVars << "0X" << hex << frame.GetAddress() << dec;
+ }
+
+ int FrameCount;
+ wstringstream StackVars;
+ };
+
+ StackWalker stackWalker;
+ stackWalker.Walk (2);
+
+ return stackWalker.StackVars.str();
+
+#else // wxUSE_STACKWALKER
+
+ return wstring();
+
+#endif // wxUSE_STACKWALKER
+ }
+
+ void FatalErrorHandler::OnTerminate ()
+ {
+ try
+ {
+ throw;
+ }
+ catch (UserAbort&)
+ {
+ }
+ catch (Exception &e)
+ {
+ wxString vars;
+
+ wxString exName = StringConverter::ToWide (StringConverter::GetTypeName (typeid (e)));
+ if (exName.find (L"TrueCrypt::") != string::npos)
+ exName = exName.Mid (11);
+
+ wxString exPos = StringConverter::ToWide (e.what());
+ if (exPos.find (L"TrueCrypt::") != string::npos)
+ exPos = exPos.Mid (11);
+
+ vars << L"cpus=" << wxThread::GetCPUCount();
+ vars << wxString::Format (L"&cksum=%x", GetAppChecksum());
+ vars << L"&exception=" << exName;
+ vars << L"&exlocation=" << exPos;
+ vars << FatalErrorHandler::GetCallStack (16);
+
+ vars.Replace (L"::", L".");
+ vars.Replace (L":", L".");
+
+ wxString url = Gui->GetHomepageLinkURL (L"err-report", true, vars);
+ url.Replace (L"=0x", L"=");
+ url.Replace (L"=0X0x", L"=0x");
+ url.Replace (L"=0X", L"=0x");
+
+ 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";
+#if wxUSE_STACKWALKER == 1
+ msg += L"- TrueCrypt call stack\n";
+#endif
+ 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";
+
+#ifdef __WXGTK__
+ wxString fUrl = url;
+ fUrl.Replace (L"&st", L" &st");
+ msg += fUrl;
+#else
+ msg += url;
+#endif
+
+ msg += L"\n\nDo you want to send us the error report?";
+
+ if (Gui->AskYesNo (msg, true))
+ wxLaunchDefaultBrowser (url, wxBROWSER_NEW_WINDOW);
+
+ }
+ catch (exception &e)
+ {
+ Gui->ShowError (e);
+ }
+ catch (...)
+ {
+ Gui->ShowError (_("Unknown exception occurred."));
+ }
+
+ _exit (1);
+ }
+
+ void FatalErrorHandler::Register ()
+ {
+#ifndef TC_WINDOWS
+ // OnUnhandledException() seems to be called only on Windows
+ DefaultTerminateHandler = std::set_terminate (OnTerminate);
+#endif
+
+#ifdef TC_UNIX
+ struct sigaction action;
+ Memory::Zero (&action, sizeof (action));
+ action.sa_flags = SA_SIGINFO;
+ action.sa_sigaction = OnFatalProgramErrorSignal;
+
+ throw_sys_if (sigaction (SIGILL, &action, nullptr) == -1);
+ throw_sys_if (sigaction (SIGFPE, &action, nullptr) == -1);
+ throw_sys_if (sigaction (SIGSEGV, &action, nullptr) == -1);
+ throw_sys_if (sigaction (SIGBUS, &action, nullptr) == -1);
+ throw_sys_if (sigaction (SIGSYS, &action, nullptr) == -1);
+#endif
+ }
+}