mirror of https://github.com/OpenTTD/OpenTTD.git
242 lines
6.7 KiB
C++
242 lines
6.7 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file crashlog_osx.cpp OS X crash log handler */
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#include "../../stdafx.h"
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#include "../../crashlog.h"
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#include "../../fileio_func.h"
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#include "../../string_func.h"
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#include "../../gamelog.h"
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#include "../../saveload/saveload.h"
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#include "../../video/video_driver.hpp"
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#include "macos.h"
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#include <setjmp.h>
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#include <signal.h>
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#include <mach-o/arch.h>
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#include <dlfcn.h>
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#include <cxxabi.h>
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#include <execinfo.h>
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#ifdef WITH_UNOFFICIAL_BREAKPAD
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# include <client/mac/handler/exception_handler.h>
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#endif
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#include "../../safeguards.h"
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/* Macro testing a stack address for valid alignment. */
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#if defined(__i386__)
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#define IS_ALIGNED(addr) (((uintptr_t)(addr) & 0xf) == 8)
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#else
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#define IS_ALIGNED(addr) (((uintptr_t)(addr) & 0xf) == 0)
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#endif
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#define MAX_STACK_FRAMES 64
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/** The signals we want our crash handler to handle. */
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static constexpr int _signals_to_handle[] = { SIGSEGV, SIGABRT, SIGFPE, SIGBUS, SIGILL, SIGSYS, SIGQUIT };
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/**
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* OSX implementation for the crash logger.
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*/
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class CrashLogOSX : public CrashLog {
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/** Signal that has been thrown. */
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int signum;
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void SurveyCrash(nlohmann::json &survey) const override
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{
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survey["id"] = signum;
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survey["reason"] = strsignal(signum);
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}
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void SurveyStacktrace(nlohmann::json &survey) const override
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{
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void *trace[64];
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int trace_size = backtrace(trace, lengthof(trace));
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survey = nlohmann::json::array();
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char **messages = backtrace_symbols(trace, trace_size);
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for (int i = 0; i < trace_size; i++) {
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survey.push_back(messages[i]);
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}
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free(messages);
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}
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#ifdef WITH_UNOFFICIAL_BREAKPAD
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static bool MinidumpCallback(const char* dump_dir, const char* minidump_id, void* context, bool succeeded)
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{
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CrashLogOSX *crashlog = reinterpret_cast<CrashLogOSX *>(context);
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crashlog->crashdump_filename = crashlog->CreateFileName(".dmp");
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std::rename(fmt::format("{}/{}.dmp", dump_dir, minidump_id).c_str(), crashlog->crashdump_filename.c_str());
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return succeeded;
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}
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bool WriteCrashDump() override
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{
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return google_breakpad::ExceptionHandler::WriteMinidump(_personal_dir, MinidumpCallback, this);
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}
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#endif
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/* virtual */ bool TryExecute(std::string_view section_name, std::function<bool()> &&func) override
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{
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this->try_execute_active = true;
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/* Setup a longjump in case a crash happens. */
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if (setjmp(this->internal_fault_jmp_buf) != 0) {
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fmt::print("Something went wrong when attempting to fill {} section of the crash log.\n", section_name);
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/* Reset the signals and continue on. The handler is responsible for dealing with the crash. */
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sigset_t sigs;
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sigemptyset(&sigs);
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for (int signum : _signals_to_handle) {
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sigaddset(&sigs, signum);
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}
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sigprocmask(SIG_UNBLOCK, &sigs, nullptr);
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this->try_execute_active = false;
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return false;
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}
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bool res = func();
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this->try_execute_active = false;
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return res;
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}
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public:
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/**
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* A crash log is always generated by signal.
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* @param signum the signal that was caused by the crash.
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*/
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CrashLogOSX(int signum) : signum(signum) {}
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/** Show a dialog with the crash information. */
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void DisplayCrashDialog() const
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{
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static const char crash_title[] =
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"A serious fault condition occurred in the game. The game will shut down.";
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std::string message = fmt::format(
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"Please send crash.json.log, crash.dmp, and crash.sav to the developers. "
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"This will greatly help debugging.\n\n"
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"https://github.com/OpenTTD/OpenTTD/issues.\n\n"
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"{}\n{}\n{}\n{}",
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this->crashlog_filename, this->crashdump_filename, this->savegame_filename, this->screenshot_filename);
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ShowMacDialog(crash_title, message.c_str(), "Quit");
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}
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/** Buffer to track the long jump set setup. */
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jmp_buf internal_fault_jmp_buf;
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/** Whether we are in a TryExecute block. */
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bool try_execute_active = false;
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/** Points to the current crash log. */
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static CrashLogOSX *current;
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};
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/* static */ CrashLogOSX *CrashLogOSX::current = nullptr;
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/**
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* Set a signal handler for all signals we want to capture.
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*
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* @param handler The handler to use.
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* @return sigset_t A sigset_t containing all signals we want to capture.
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*/
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static sigset_t SetSignals(void(*handler)(int))
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{
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sigset_t sigs;
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sigemptyset(&sigs);
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for (int signum : _signals_to_handle) {
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sigaddset(&sigs, signum);
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}
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_flags = SA_RESTART;
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sigemptyset(&sa.sa_mask);
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sa.sa_handler = handler;
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sa.sa_mask = sigs;
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for (int signum : _signals_to_handle) {
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sigaction(signum, &sa, nullptr);
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}
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return sigs;
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}
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/**
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* Entry point for a crash that happened during the handling of a crash.
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*
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* @param signum the signal that caused us to crash.
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*/
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static void CDECL HandleInternalCrash(int signum)
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{
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if (CrashLogOSX::current == nullptr || !CrashLogOSX::current->try_execute_active) {
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fmt::print("Something went seriously wrong when creating the crash log. Aborting.\n");
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_exit(1);
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}
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longjmp(CrashLogOSX::current->internal_fault_jmp_buf, 1);
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}
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/**
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* Entry point for the crash handler.
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*
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* @param signum the signal that caused us to crash.
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*/
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static void CDECL HandleCrash(int signum)
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{
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if (CrashLogOSX::current != nullptr) {
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CrashLog::AfterCrashLogCleanup();
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_exit(2);
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}
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/* Capture crashing during the handling of a crash. */
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sigset_t sigs = SetSignals(HandleInternalCrash);
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sigset_t old_sigset;
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sigprocmask(SIG_UNBLOCK, &sigs, &old_sigset);
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if (_gamelog.TestEmergency()) {
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ShowMacDialog("A serious fault condition occurred in the game. The game will shut down.",
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"As you loaded an emergency savegame no crash information will be generated.\n",
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"Quit");
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_exit(3);
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}
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if (SaveloadCrashWithMissingNewGRFs()) {
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ShowMacDialog("A serious fault condition occurred in the game. The game will shut down.",
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"As you loaded an savegame for which you do not have the required NewGRFs no crash information will be generated.\n",
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"Quit");
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_exit(3);
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}
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CrashLogOSX *log = new CrashLogOSX(signum);
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CrashLogOSX::current = log;
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log->MakeCrashLog();
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if (VideoDriver::GetInstance() == nullptr || VideoDriver::GetInstance()->HasGUI()) {
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log->DisplayCrashDialog();
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}
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CrashLog::AfterCrashLogCleanup();
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_exit(2);
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}
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/* static */ void CrashLog::InitialiseCrashLog()
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{
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SetSignals(HandleCrash);
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}
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/* static */ void CrashLog::InitThread()
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{
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}
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