mirror of https://github.com/FWGS/xash3d-fwgs
404 lines
14 KiB
C
404 lines
14 KiB
C
/*
|
|
crashhandler.c - advanced crashhandler
|
|
Copyright (C) 2016 Mittorn
|
|
|
|
This program 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, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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. See the
|
|
GNU General Public License for more details.
|
|
*/
|
|
|
|
#include "common.h"
|
|
|
|
/*
|
|
================
|
|
Sys_Crash
|
|
|
|
Crash handler, called from system
|
|
================
|
|
*/
|
|
#define DEBUG_BREAK
|
|
/// TODO: implement on windows too
|
|
|
|
#if XASH_CRASHHANDLER == CRASHHANDLER_DBGHELP || XASH_CRASHHANDLER == CRASHHANDLER_WIN32
|
|
#if XASH_CRASHHANDLER == CRASHHANDLER_DBGHELP
|
|
#pragma comment( lib, "dbghelp" )
|
|
#pragma comment( lib, "psapi" )
|
|
#include <winnt.h>
|
|
#include <dbghelp.h>
|
|
#include <psapi.h>
|
|
|
|
#ifndef XASH_SDL
|
|
typedef ULONG_PTR DWORD_PTR, *PDWORD_PTR;
|
|
#endif
|
|
|
|
int ModuleName( HANDLE process, char *name, void *address, int len )
|
|
{
|
|
DWORD_PTR baseAddress = 0;
|
|
static HMODULE *moduleArray;
|
|
static unsigned int moduleCount;
|
|
LPBYTE moduleArrayBytes;
|
|
DWORD bytesRequired;
|
|
int i;
|
|
|
|
if(len < 3)
|
|
return 0;
|
|
|
|
if ( !moduleArray && EnumProcessModules( process, NULL, 0, &bytesRequired ) )
|
|
{
|
|
if ( bytesRequired )
|
|
{
|
|
moduleArrayBytes = (LPBYTE)LocalAlloc( LPTR, bytesRequired );
|
|
|
|
if ( moduleArrayBytes )
|
|
{
|
|
if( EnumProcessModules( process, (HMODULE *)moduleArrayBytes, bytesRequired, &bytesRequired ) )
|
|
{
|
|
moduleCount = bytesRequired / sizeof( HMODULE );
|
|
moduleArray = (HMODULE *)moduleArrayBytes;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for( i = 0; i<moduleCount; i++ )
|
|
{
|
|
MODULEINFO info;
|
|
GetModuleInformation( process, moduleArray[i], &info, sizeof(MODULEINFO) );
|
|
|
|
if( ( address > info.lpBaseOfDll ) &&
|
|
( (DWORD64)address < (DWORD64)info.lpBaseOfDll + (DWORD64)info.SizeOfImage ) )
|
|
return GetModuleBaseName( process, moduleArray[i], name, len );
|
|
}
|
|
return Q_snprintf(name, len, "???");
|
|
}
|
|
static void stack_trace( PEXCEPTION_POINTERS pInfo )
|
|
{
|
|
char message[1024];
|
|
int len = 0;
|
|
size_t i;
|
|
HANDLE process = GetCurrentProcess();
|
|
HANDLE thread = GetCurrentThread();
|
|
IMAGEHLP_LINE64 line;
|
|
DWORD dline = 0;
|
|
DWORD options;
|
|
CONTEXT context;
|
|
STACKFRAME64 stackframe;
|
|
DWORD image;
|
|
|
|
memcpy( &context, pInfo->ContextRecord, sizeof(CONTEXT) );
|
|
options = SymGetOptions();
|
|
options |= SYMOPT_DEBUG;
|
|
options |= SYMOPT_LOAD_LINES;
|
|
SymSetOptions( options );
|
|
|
|
SymInitialize( process, NULL, TRUE );
|
|
|
|
|
|
|
|
ZeroMemory( &stackframe, sizeof(STACKFRAME64) );
|
|
|
|
#ifdef _M_IX86
|
|
image = IMAGE_FILE_MACHINE_I386;
|
|
stackframe.AddrPC.Offset = context.Eip;
|
|
stackframe.AddrPC.Mode = AddrModeFlat;
|
|
stackframe.AddrFrame.Offset = context.Ebp;
|
|
stackframe.AddrFrame.Mode = AddrModeFlat;
|
|
stackframe.AddrStack.Offset = context.Esp;
|
|
stackframe.AddrStack.Mode = AddrModeFlat;
|
|
#elif _M_X64
|
|
image = IMAGE_FILE_MACHINE_AMD64;
|
|
stackframe.AddrPC.Offset = context.Rip;
|
|
stackframe.AddrPC.Mode = AddrModeFlat;
|
|
stackframe.AddrFrame.Offset = context.Rsp;
|
|
stackframe.AddrFrame.Mode = AddrModeFlat;
|
|
stackframe.AddrStack.Offset = context.Rsp;
|
|
stackframe.AddrStack.Mode = AddrModeFlat;
|
|
#elif _M_IA64
|
|
image = IMAGE_FILE_MACHINE_IA64;
|
|
stackframe.AddrPC.Offset = context.StIIP;
|
|
stackframe.AddrPC.Mode = AddrModeFlat;
|
|
stackframe.AddrFrame.Offset = context.IntSp;
|
|
stackframe.AddrFrame.Mode = AddrModeFlat;
|
|
stackframe.AddrBStore.Offset = context.RsBSP;
|
|
stackframe.AddrBStore.Mode = AddrModeFlat;
|
|
stackframe.AddrStack.Offset = context.IntSp;
|
|
stackframe.AddrStack.Mode = AddrModeFlat;
|
|
#endif
|
|
len += Q_snprintf( message + len, 1024 - len, "Sys_Crash: address %p, code %p\n", pInfo->ExceptionRecord->ExceptionAddress, (void*)pInfo->ExceptionRecord->ExceptionCode );
|
|
if( SymGetLineFromAddr64( process, (DWORD64)pInfo->ExceptionRecord->ExceptionAddress, &dline, &line ) )
|
|
{
|
|
len += Q_snprintf(message + len, 1024 - len,"Exception: %s:%d:%d\n", (char*)line.FileName, (int)line.LineNumber, (int)dline);
|
|
}
|
|
if( SymGetLineFromAddr64( process, stackframe.AddrPC.Offset, &dline, &line ) )
|
|
{
|
|
len += Q_snprintf(message + len, 1024 - len,"PC: %s:%d:%d\n", (char*)line.FileName, (int)line.LineNumber, (int)dline);
|
|
}
|
|
if( SymGetLineFromAddr64( process, stackframe.AddrFrame.Offset, &dline, &line ) )
|
|
{
|
|
len += Q_snprintf(message + len, 1024 - len,"Frame: %s:%d:%d\n", (char*)line.FileName, (int)line.LineNumber, (int)dline);
|
|
}
|
|
for( i = 0; i < 25; i++ )
|
|
{
|
|
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR)];
|
|
PSYMBOL_INFO symbol = (PSYMBOL_INFO)buffer;
|
|
BOOL result = StackWalk64(
|
|
image, process, thread,
|
|
&stackframe, &context, NULL,
|
|
SymFunctionTableAccess64, SymGetModuleBase64, NULL);
|
|
|
|
DWORD64 displacement = 0;
|
|
if( !result )
|
|
break;
|
|
|
|
|
|
symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
|
|
symbol->MaxNameLen = MAX_SYM_NAME;
|
|
|
|
len += Q_snprintf( message + len, 1024 - len, "% 2d %p", i, (void*)stackframe.AddrPC.Offset );
|
|
if( SymFromAddr( process, stackframe.AddrPC.Offset, &displacement, symbol ) )
|
|
{
|
|
len += Q_snprintf( message + len, 1024 - len, " %s ", symbol->Name );
|
|
}
|
|
if( SymGetLineFromAddr64( process, stackframe.AddrPC.Offset, &dline, &line ) )
|
|
{
|
|
len += Q_snprintf(message + len, 1024 - len,"(%s:%d:%d) ", (char*)line.FileName, (int)line.LineNumber, (int)dline);
|
|
}
|
|
len += Q_snprintf( message + len, 1024 - len, "(");
|
|
len += ModuleName( process, message + len, (void*)stackframe.AddrPC.Offset, 1024 - len );
|
|
len += Q_snprintf( message + len, 1024 - len, ")\n");
|
|
}
|
|
#ifdef XASH_SDL
|
|
if( host.type != HOST_DEDICATED ) // let system to restart server automaticly
|
|
SDL_ShowSimpleMessageBox( SDL_MESSAGEBOX_ERROR,"Sys_Crash", message, host.hWnd );
|
|
#endif
|
|
Sys_PrintLog(message);
|
|
|
|
SymCleanup(process);
|
|
}
|
|
#endif //DBGHELP
|
|
LPTOP_LEVEL_EXCEPTION_FILTER oldFilter;
|
|
long _stdcall Sys_Crash( PEXCEPTION_POINTERS pInfo )
|
|
{
|
|
// save config
|
|
if( host.state != HOST_CRASHED )
|
|
{
|
|
// check to avoid recursive call
|
|
host.crashed = true;
|
|
|
|
#if XASH_CRASHHANDLER == CRASHHANDLER_DBGHELP
|
|
stack_trace( pInfo );
|
|
#else
|
|
Sys_Warn( "Sys_Crash: call %p at address %p", pInfo->ExceptionRecord->ExceptionAddress, pInfo->ExceptionRecord->ExceptionCode );
|
|
#endif
|
|
|
|
if( host.type == HOST_NORMAL )
|
|
CL_Crashed(); // tell client about crash
|
|
else host.state = HOST_CRASHED;
|
|
|
|
if( host.developer <= 0 )
|
|
{
|
|
// no reason to call debugger in release build - just exit
|
|
Sys_Quit();
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
|
|
// all other states keep unchanged to let debugger find bug
|
|
Sys_DestroyConsole();
|
|
}
|
|
|
|
if( oldFilter )
|
|
return oldFilter( pInfo );
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
|
|
void Sys_SetupCrashHandler( void )
|
|
{
|
|
SetErrorMode( SEM_FAILCRITICALERRORS ); // no abort/retry/fail errors
|
|
oldFilter = SetUnhandledExceptionFilter( Sys_Crash );
|
|
host.hInst = GetModuleHandle( NULL );
|
|
}
|
|
|
|
void Sys_RestoreCrashHandler( void )
|
|
{
|
|
// restore filter
|
|
if( oldFilter ) SetUnhandledExceptionFilter( oldFilter );
|
|
}
|
|
|
|
#elif XASH_CRASHHANDLER == CRASHHANDLER_UCONTEXT
|
|
// Posix signal handler
|
|
#include "library.h"
|
|
#if defined(__FreeBSD__) || defined(__NetBSD__) || defined __ANDROID__
|
|
#define HAVE_UCONTEXT_H 1
|
|
#endif
|
|
|
|
#ifdef HAVE_UCONTEXT_H
|
|
#include <ucontext.h>
|
|
#endif
|
|
#include <sys/mman.h>
|
|
|
|
int printframe( char *buf, int len, int i, void *addr )
|
|
{
|
|
Dl_info dlinfo;
|
|
if( len <= 0 ) return 0; // overflow
|
|
if( dladdr( addr, &dlinfo ))
|
|
{
|
|
if( dlinfo.dli_sname )
|
|
return Q_snprintf( buf, len, "% 2d: %p <%s+%lu> (%s)\n", i, addr, dlinfo.dli_sname,
|
|
(unsigned long)addr - (unsigned long)dlinfo.dli_saddr, dlinfo.dli_fname ); // print symbol, module and address
|
|
else
|
|
return Q_snprintf( buf, len, "% 2d: %p (%s)\n", i, addr, dlinfo.dli_fname ); // print module and address
|
|
}
|
|
else
|
|
return Q_snprintf( buf, len, "% 2d: %p\n", i, addr ); // print only address
|
|
}
|
|
|
|
struct sigaction oldFilter;
|
|
|
|
static void Sys_Crash( int signal, siginfo_t *si, void *context)
|
|
{
|
|
void *trace[32];
|
|
|
|
char message[4096], stackframe[256];
|
|
int len, stacklen, logfd, i = 0;
|
|
#if defined(__OpenBSD__)
|
|
struct sigcontext *ucontext = (struct sigcontext*)context;
|
|
#else
|
|
ucontext_t *ucontext = (ucontext_t*)context;
|
|
#endif
|
|
#if defined(__x86_64__)
|
|
#if defined(__FreeBSD__)
|
|
void *pc = (void*)ucontext->uc_mcontext.mc_rip, **bp = (void**)ucontext->uc_mcontext.mc_rbp, **sp = (void**)ucontext->uc_mcontext.mc_rsp;
|
|
#elif defined(__NetBSD__)
|
|
void *pc = (void*)ucontext->uc_mcontext.__gregs[REG_RIP], **bp = (void**)ucontext->uc_mcontext.__gregs[REG_RBP], **sp = (void**)ucontext->uc_mcontext.__gregs[REG_RSP];
|
|
#elif defined(__OpenBSD__)
|
|
void *pc = (void*)ucontext->sc_rip, **bp = (void**)ucontext->sc_rbp, **sp = (void**)ucontext->sc_rsp;
|
|
#else
|
|
void *pc = (void*)ucontext->uc_mcontext.gregs[REG_RIP], **bp = (void**)ucontext->uc_mcontext.gregs[REG_RBP], **sp = (void**)ucontext->uc_mcontext.gregs[REG_RSP];
|
|
#endif
|
|
#elif defined(__i386__)
|
|
#if defined(__FreeBSD__)
|
|
void *pc = (void*)ucontext->uc_mcontext.mc_eip, **bp = (void**)ucontext->uc_mcontext.mc_ebp, **sp = (void**)ucontext->uc_mcontext.mc_esp;
|
|
#elif defined(__NetBSD__)
|
|
void *pc = (void*)ucontext->uc_mcontext.__gregs[REG_EIP], **bp = (void**)ucontext->uc_mcontext.__gregs[REG_EBP], **sp = (void**)ucontext->uc_mcontext.__gregs[REG_ESP];
|
|
#elif defined(__OpenBSD__)
|
|
void *pc = (void*)ucontext->sc_eip, **bp = (void**)ucontext->sc_ebp, **sp = (void**)ucontext->sc_esp;
|
|
#else
|
|
void *pc = (void*)ucontext->uc_mcontext.gregs[REG_EIP], **bp = (void**)ucontext->uc_mcontext.gregs[REG_EBP], **sp = (void**)ucontext->uc_mcontext.gregs[REG_ESP];
|
|
#endif
|
|
#elif defined(__aarch64__) // arm not tested
|
|
void *pc = (void*)ucontext->uc_mcontext.pc, **bp = (void*)ucontext->uc_mcontext.regs[29], **sp = (void*)ucontext->uc_mcontext.sp;
|
|
#elif defined(__arm__)
|
|
void *pc = (void*)ucontext->uc_mcontext.arm_pc, **bp = (void*)ucontext->uc_mcontext.arm_fp, **sp = (void*)ucontext->uc_mcontext.arm_sp;
|
|
#else
|
|
#error "Unknown arch!!!"
|
|
#endif
|
|
// Safe actions first, stack and memory may be corrupted
|
|
#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
|
|
len = Q_snprintf( message, 4096, "Sys_Crash: signal %d, err %d with code %d at %p\n", signal, si->si_errno, si->si_code, si->si_addr );
|
|
#else
|
|
len = Q_snprintf( message, 4096, "Sys_Crash: signal %d, err %d with code %d at %p %p\n", signal, si->si_errno, si->si_code, si->si_addr, si->si_ptr );
|
|
#endif
|
|
write(2, message, len);
|
|
// Flush buffers before writing directly to descriptors
|
|
fflush( stdout );
|
|
fflush( stderr );
|
|
// Now get log fd and write trace directly to log
|
|
logfd = Sys_LogFileNo();
|
|
write( logfd, message, len );
|
|
write( 2, "Stack backtrace:\n", 17 );
|
|
write( logfd, "Stack backtrace:\n", 17 );
|
|
strncpy(message + len, "Stack backtrace:\n", 4096 - len);
|
|
len += 17;
|
|
size_t pagesize = sysconf(_SC_PAGESIZE);
|
|
do
|
|
{
|
|
int line = printframe( message + len, 4096 - len, ++i, pc);
|
|
write( 2, message + len, line );
|
|
write( logfd, message + len, line );
|
|
len += line;
|
|
//if( !dladdr(bp,0) ) break; // Only when bp is in module
|
|
if( ( mprotect((char *)(((int) bp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_WRITE | PROT_EXEC ) == -1) &&
|
|
( mprotect((char *)(((int) bp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_EXEC ) == -1) &&
|
|
( mprotect((char *)(((int) bp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_WRITE ) == -1) &&
|
|
( mprotect((char *)(((int) bp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ ) == -1) )
|
|
break;
|
|
if( ( mprotect((char *)(((int) bp[0] + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_WRITE | PROT_EXEC ) == -1) &&
|
|
( mprotect((char *)(((int) bp[0] + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_EXEC ) == -1) &&
|
|
( mprotect((char *)(((int) bp[0] + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_WRITE ) == -1) &&
|
|
( mprotect((char *)(((int) bp[0] + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ ) == -1) )
|
|
break;
|
|
pc = bp[1];
|
|
bp = (void**)bp[0];
|
|
}
|
|
while( bp && i < 128 );
|
|
// Try to print stack
|
|
write( 2, "Stack dump:\n", 12 );
|
|
write( logfd, "Stack dump:\n", 12 );
|
|
strncpy( message + len, "Stack dump:\n", 4096 - len );
|
|
|
|
len += 12;
|
|
if( ( mprotect((char *)(((int) sp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_WRITE | PROT_EXEC ) != -1) ||
|
|
( mprotect((char *)(((int) sp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_EXEC ) != -1) ||
|
|
( mprotect((char *)(((int) sp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ | PROT_WRITE ) != -1) ||
|
|
( mprotect((char *)(((int) sp + (pagesize-1)) & ~(pagesize-1)), pagesize, PROT_READ ) != -1) )
|
|
for( i = 0; i < 32; i++ )
|
|
{
|
|
int line = printframe( message + len, 4096 - len, i, sp[i] );
|
|
write( 2, message + len, line );
|
|
write( logfd, message + len, line );
|
|
len += line;
|
|
}
|
|
// Put MessageBox as Sys_Error
|
|
Msg( "%s\n", message );
|
|
#ifdef XASH_SDL
|
|
SDL_SetWindowGrab( host.hWnd, SDL_FALSE );
|
|
#endif
|
|
MSGBOX( message );
|
|
|
|
// Log saved, now we can try to save configs and close log correctly, it may crash
|
|
if( host.type == HOST_NORMAL )
|
|
CL_Crashed();
|
|
host.state = HOST_CRASHED;
|
|
host.crashed = true;
|
|
|
|
Sys_Quit();
|
|
}
|
|
|
|
void Sys_SetupCrashHandler( void )
|
|
{
|
|
struct sigaction act;
|
|
act.sa_sigaction = Sys_Crash;
|
|
act.sa_flags = SA_SIGINFO | SA_ONSTACK;
|
|
sigaction(SIGSEGV, &act, &oldFilter);
|
|
sigaction(SIGABRT, &act, &oldFilter);
|
|
sigaction(SIGBUS, &act, &oldFilter);
|
|
sigaction(SIGILL, &act, &oldFilter);
|
|
}
|
|
|
|
void Sys_RestoreCrashHandler( void )
|
|
{
|
|
sigaction( SIGSEGV, &oldFilter, NULL );
|
|
sigaction( SIGABRT, &oldFilter, NULL );
|
|
sigaction( SIGBUS, &oldFilter, NULL );
|
|
sigaction( SIGILL, &oldFilter, NULL );
|
|
}
|
|
|
|
#elif XASH_CRASHHANDLER == CRASHHANDLER_NULL
|
|
|
|
void Sys_SetupCrashHandler( void )
|
|
{
|
|
// stub
|
|
}
|
|
|
|
void Sys_RestoreCrashHandler( void )
|
|
{
|
|
// stub
|
|
}
|
|
#endif
|