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Logger.c
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Logger.c
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#include "Logger.h"
#include "Platform.h"
#include "Chat.h"
#include "Window.h"
#include "Funcs.h"
#include "Stream.h"
static void Logger_AbortCommon(ReturnCode result, const char* raw_msg, void* ctx);
#ifdef CC_BUILD_WIN
#define WIN32_LEAN_AND_MEAN
#define NOSERVICE
#define NOMCX
#define NOIME
#include <windows.h>
#include <imagehlp.h>
struct StackPointers { uintptr_t Instruction, Frame, Stack; };
struct SymbolAndName { IMAGEHLP_SYMBOL Symbol; char Name[256]; };
/*########################################################################################################################*
*-------------------------------------------------------Info dumping------------------------------------------------------*
*#########################################################################################################################*/
static void Logger_DumpRegisters(void* ctx) {
String str; char strBuffer[STRING_SIZE * 8];
CONTEXT* r;
if (!ctx) return;
r = (CONTEXT*)ctx;
String_InitArray(str, strBuffer);
String_AppendConst(&str, "-- registers --\r\n");
#if defined _M_IX86
String_Format3(&str, "eax=%x ebx=%x ecx=%x\r\n", &r->Eax, &r->Ebx, &r->Ecx);
String_Format3(&str, "edx=%x esi=%x edi=%x\r\n", &r->Edx, &r->Esi, &r->Edi);
String_Format3(&str, "eip=%x ebp=%x esp=%x\r\n", &r->Eip, &r->Ebp, &r->Esp);
#elif defined _M_X64
String_Format3(&str, "rax=%x rbx=%x rcx=%x\r\n", &r->Rax, &r->Rbx, &r->Rcx);
String_Format3(&str, "rdx=%x rsi=%x rdi=%x\r\n", &r->Rdx, &r->Rsi, &r->Rdi);
String_Format3(&str, "rip=%x rbp=%x rsp=%x\r\n", &r->Rip, &r->Rbp, &r->Rsp);
String_Format3(&str, "r8 =%x r9 =%x r10=%x\r\n", &r->R8, &r->R9, &r->R10);
String_Format3(&str, "r11=%x r12=%x r13=%x\r\n", &r->R11, &r->R12, &r->R13);
String_Format2(&str, "r14=%x r15=%x\r\n" , &r->R14, &r->R15);
#elif defined _M_IA64
String_Format3(&str, "r1 =%x r2 =%x r3 =%x\r\n", &r->IntGp, &r->IntT0, &r->IntT1);
String_Format3(&str, "r4 =%x r5 =%x r6 =%x\r\n", &r->IntS0, &r->IntS1, &r->IntS2);
String_Format3(&str, "r7 =%x r8 =%x r9 =%x\r\n", &r->IntS3, &r->IntV0, &r->IntT2);
String_Format3(&str, "r10=%x r11=%x r12=%x\r\n", &r->IntT3, &r->IntT4, &r->IntSp);
String_Format3(&str, "r13=%x r14=%x r15=%x\r\n", &r->IntTeb, &r->IntT5, &r->IntT6);
String_Format3(&str, "r16=%x r17=%x r18=%x\r\n", &r->IntT7, &r->IntT8, &r->IntT9);
String_Format3(&str, "r19=%x r20=%x r21=%x\r\n", &r->IntT10, &r->IntT11, &r->IntT12);
String_Format3(&str, "r22=%x r23=%x r24=%x\r\n", &r->IntT13, &r->IntT14, &r->IntT15);
String_Format3(&str, "r25=%x r26=%x r27=%x\r\n", &r->IntT16, &r->IntT17, &r->IntT18);
String_Format3(&str, "r28=%x r29=%x r30=%x\r\n", &r->IntT19, &r->IntT20, &r->IntT21);
String_Format3(&str, "r31=%x nat=%x pre=%x\r\n", &r->IntT22, &r->IntNats,&r->Preds);
#else
#error "Unknown machine type"
#endif
Logger_Log(&str);
}
static int Logger_GetFrames(CONTEXT* ctx, struct StackPointers* pointers, int max) {
STACKFRAME frame = { 0 };
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrFrame.Mode = AddrModeFlat;
frame.AddrStack.Mode = AddrModeFlat;
DWORD type;
#if defined _M_IX86
type = IMAGE_FILE_MACHINE_I386;
frame.AddrPC.Offset = ctx->Eip;
frame.AddrFrame.Offset = ctx->Ebp;
frame.AddrStack.Offset = ctx->Esp;
#elif defined _M_X64
type = IMAGE_FILE_MACHINE_AMD64;
frame.AddrPC.Offset = ctx->Rip;
frame.AddrFrame.Offset = ctx->Rsp;
frame.AddrStack.Offset = ctx->Rsp;
#elif defined _M_IA64
type = IMAGE_FILE_MACHINE_IA64;
frame.AddrPC.Offset = ctx->StIIP;
frame.AddrFrame.Offset = ctx->IntSp;
frame.AddrBStore.Offset = ctx->RsBSP;
frame.AddrStack.Offset = ctx->IntSp;
frame.AddrBStore.Mode = AddrModeFlat;
#else
#error "Unknown machine type"
#endif
HANDLE process = GetCurrentProcess();
HANDLE thread = GetCurrentThread();
int count;
CONTEXT copy = *ctx;
for (count = 0; count < max; count++) {
if (!StackWalk(type, process, thread, &frame, ©, NULL, SymFunctionTableAccess, SymGetModuleBase, NULL)) break;
if (!frame.AddrFrame.Offset) break;
pointers[count].Instruction = frame.AddrPC.Offset;
pointers[count].Frame = frame.AddrFrame.Offset;
pointers[count].Stack = frame.AddrStack.Offset;
}
return count;
}
static void Logger_Backtrace(String* backtrace, void* ctx) {
struct SymbolAndName sym = { 0 };
sym.Symbol.MaxNameLength = 255;
sym.Symbol.SizeOfStruct = sizeof(IMAGEHLP_SYMBOL);
HANDLE process = GetCurrentProcess();
struct StackPointers pointers[40];
int i, frames = Logger_GetFrames((CONTEXT*)ctx, pointers, 40);
for (i = 0; i < frames; i++) {
int number = i + 1;
uintptr_t addr = pointers[i].Instruction;
char strBuffer[STRING_SIZE * 10];
String str = String_FromArray(strBuffer);
/* instruction pointer */
if (SymGetSymFromAddr(process, addr, NULL, &sym.Symbol)) {
String_Format3(&str, "%i) 0x%x - %c\r\n", &number, &addr, sym.Symbol.Name);
} else {
String_Format2(&str, "%i) 0x%x\r\n", &number, &addr);
}
/* frame and stack address */
String_AppendString(backtrace, &str);
String_Format2(&str, " fp: %x, sp: %x\r\n", &pointers[i].Frame, &pointers[i].Stack);
/* line number */
IMAGEHLP_LINE line = { 0 }; DWORD lineOffset;
line.SizeOfStruct = sizeof(IMAGEHLP_LINE);
if (SymGetLineFromAddr(process, addr, &lineOffset, &line)) {
String_Format2(&str, " line %i in %c\r\n", &line.LineNumber, line.FileName);
}
/* module address is in */
IMAGEHLP_MODULE module = { 0 };
module.SizeOfStruct = sizeof(IMAGEHLP_MODULE);
if (SymGetModuleInfo(process, addr, &module)) {
String_Format2(&str, " in module %c (%c)\r\n", module.ModuleName, module.ImageName);
}
Logger_Log(&str);
}
String_AppendConst(backtrace, "\r\n");
}
static void Logger_DumpBacktrace(String* str, void* ctx) {
const static String backtrace = String_FromConst("-- backtrace --\r\n");
HANDLE process = GetCurrentProcess();
SymInitialize(process, NULL, TRUE);
Logger_Log(&backtrace);
Logger_Backtrace(str, ctx);
}
static BOOL CALLBACK Logger_DumpModule(const char* name, ULONG_PTR base, ULONG size, void* ctx) {
String str; char strBuffer[STRING_SIZE * 4];
uintptr_t beg, end;
beg = base; end = base + (size - 1);
String_InitArray(str, strBuffer);
String_Format3(&str, "%c = %x-%x\r\n", name, &beg, &end);
Logger_Log(&str);
return true;
}
static void Logger_DumpMisc(void* ctx) {
const static String modules = String_FromConst("-- modules --\r\n");
HANDLE process = GetCurrentProcess();
Logger_Log(&modules);
EnumerateLoadedModules(process, Logger_DumpModule, NULL);
}
/*########################################################################################################################*
*------------------------------------------------------Error handling-----------------------------------------------------*
*#########################################################################################################################*/
static LONG WINAPI Logger_UnhandledFilter(struct _EXCEPTION_POINTERS* pInfo) {
String msg; char msgBuffer[STRING_SIZE * 2 + 1];
uint32_t code;
uintptr_t addr;
code = (uint32_t)pInfo->ExceptionRecord->ExceptionCode;
addr = (uintptr_t)pInfo->ExceptionRecord->ExceptionAddress;
String_InitArray_NT(msg, msgBuffer);
String_Format2(&msg, "Unhandled exception 0x%h at 0x%x", &code, &addr);
msg.buffer[msg.length] = '\0';
Logger_AbortCommon(0, msg.buffer, pInfo->ContextRecord);
return EXCEPTION_EXECUTE_HANDLER; /* TODO: different flag */
}
void Logger_Hook(void) {
SetUnhandledExceptionFilter(Logger_UnhandledFilter);
}
/* Don't want compiler doing anything fancy with registers */
#if _MSC_VER
#pragma optimize ("", off)
#endif
void Logger_Abort2(ReturnCode result, const char* raw_msg) {
CONTEXT ctx;
#ifndef _M_IX86
/* This method is guaranteed to exist on 64 bit windows */
/* It is missing in 32 bit Windows 2000 however */
RtlCaptureContext(&ctx);
#elif _MSC_VER
/* Stack frame layout on x86: */
/* [ebp] is previous frame's EBP */
/* [ebp+4] is previous frame's EIP (return address) */
/* address of [ebp+8] is previous frame's ESP */
__asm {
mov eax, [ebp]
mov [ctx.Ebp], eax
mov eax, [ebp+4]
mov [ctx.Eip], eax
lea eax, [ebp+8]
mov [ctx.Esp], eax
mov [ctx.ContextFlags], CONTEXT_CONTROL
}
#else
int32_t _ebp, _eip, _esp;
/* TODO: I think this is right, not sure.. */
__asm__(
"mov 0(%%ebp), %%eax \n\t"
"mov %%eax, %0 \n\t"
"mov 4(%%ebp), %%eax \n\t"
"mov %%eax, %1 \n\t"
"lea 8(%%ebp), %%eax \n\t"
"mov %%eax, %2"
: "=m" (_ebp), "=m" (_eip), "=m" (_esp)
:
: "eax", "memory");
ctx.Ebp = _ebp;
ctx.Eip = _eip;
ctx.Esp = _esp;
ctx.ContextFlags = CONTEXT_CONTROL;
#endif
Logger_AbortCommon(result, raw_msg, &ctx);
}
#if _MSC_VER
#pragma optimize ("", on)
#endif
#endif
/* POSIX is mainly shared between Linux and OSX */
#ifdef CC_BUILD_POSIX
#include <ucontext.h>
#include <execinfo.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
/*########################################################################################################################*
*-------------------------------------------------------Info dumping------------------------------------------------------*
*#########################################################################################################################*/
static void Logger_Backtrace(String* backtrace_, void* ctx) {
String str; char strBuffer[STRING_SIZE * 5];
void* addrs[40];
int i, frames, num;
char** strings;
uintptr_t addr;
frames = backtrace(addrs, 40);
strings = backtrace_symbols(addrs, frames);
for (i = 0; i < frames; i++) {
num = i + 1;
addr = (uintptr_t)addrs[i];
String_InitArray(str, strBuffer);
/* instruction pointer */
if (strings && strings[i]) {
String_Format3(&str, "%i) 0x%x - %c\n", &num, &addr, strings[i]);
} else {
String_Format2(&str, "%i) 0x%x\n", &num, &addr);
}
String_AppendString(backtrace_, &str);
Logger_Log(&str);
}
String_AppendConst(backtrace_, "\n");
free(strings);
}
static void Logger_DumpBacktrace(String* str, void* ctx) {
const static String backtrace = String_FromConst("-- backtrace --\n");
Logger_Log(&backtrace);
Logger_Backtrace(str, ctx);
}
/*########################################################################################################################*
*------------------------------------------------------Error handling-----------------------------------------------------*
*#########################################################################################################################*/
static void Logger_SignalHandler(int sig, siginfo_t* info, void* ctx) {
String msg; char msgBuffer[STRING_SIZE * 2 + 1];
int type, code;
uintptr_t addr;
/* Uninstall handler to avoid chance of infinite loop */
signal(SIGSEGV, SIG_DFL);
signal(SIGBUS, SIG_DFL);
signal(SIGILL, SIG_DFL);
signal(SIGABRT, SIG_DFL);
signal(SIGFPE, SIG_DFL);
type = info->si_signo;
code = info->si_code;
addr = (uintptr_t)info->si_addr;
String_InitArray_NT(msg, msgBuffer);
String_Format3(&msg, "Unhandled signal %i (code %i) at 0x%x", &type, &code, &addr);
msg.buffer[msg.length] = '\0';
Logger_AbortCommon(0, msg.buffer, ctx);
}
void Logger_Hook(void) {
struct sigaction sa, old;
sa.sa_sigaction = Logger_SignalHandler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART | SA_SIGINFO;
sigaction(SIGSEGV, &sa, &old);
sigaction(SIGBUS, &sa, &old);
sigaction(SIGILL, &sa, &old);
sigaction(SIGABRT, &sa, &old);
sigaction(SIGFPE, &sa, &old);
}
void Logger_Abort2(ReturnCode result, const char* raw_msg) {
ucontext_t ctx;
getcontext(&ctx);
Logger_AbortCommon(result, raw_msg, &ctx);
}
#endif
/*########################################################################################################################*
*-------------------------------------------------------Info dumping------------------------------------------------------*
*#########################################################################################################################*/
#ifdef CC_BUILD_POSIX
static void Logger_DumpRegisters(void* ctx) {
String str; char strBuffer[STRING_SIZE * 8];
mcontext_t r;
if (!ctx) return;
r = ((ucontext_t*)ctx)->uc_mcontext;
String_InitArray(str, strBuffer);
String_AppendConst(&str, "-- registers --\n");
#if defined CC_BUILD_LINUX || defined CC_BUILD_SOLARIS
/* TODO: There must be a better way of getting these.. */
#if defined __i386__
String_Format3(&str, "eax=%x ebx=%x ecx=%x\n", &r.gregs[11], &r.gregs[8], &r.gregs[10]);
String_Format3(&str, "edx=%x esi=%x edi=%x\n", &r.gregs[9], &r.gregs[5], &r.gregs[4]);
String_Format3(&str, "eip=%x ebp=%x esp=%x\n", &r.gregs[14], &r.gregs[6], &r.gregs[7]);
#elif defined __x86_64__
String_Format3(&str, "rax=%x rbx=%x rcx=%x\n", &r.gregs[13], &r.gregs[11], &r.gregs[14]);
String_Format3(&str, "rdx=%x rsi=%x rdi=%x\n", &r.gregs[12], &r.gregs[9], &r.gregs[8]);
String_Format3(&str, "rip=%x rbp=%x rsp=%x\n", &r.gregs[16], &r.gregs[10], &r.gregs[15]);
String_Format3(&str, "r8 =%x r9 =%x r10=%x\n", &r.gregs[0], &r.gregs[1], &r.gregs[2]);
String_Format3(&str, "r11=%x r12=%x r13=%x\n", &r.gregs[3], &r.gregs[4], &r.gregs[5]);
String_Format2(&str, "r14=%x r15=%x\n", &r.gregs[6], &r.gregs[7]);
#else
#error "Unknown machine type"
#endif
#endif
#if defined CC_BUILD_OSX
/* You can find these definitions at /usr/include/mach/i386/_structs.h */
#if defined __i386__
String_Format3(&str, "eax=%x ebx=%x ecx=%x\n", &r->__ss.__eax, &r->__ss.__ebx, &r->__ss.__ecx);
String_Format3(&str, "edx=%x esi=%x edi=%x\n", &r->__ss.__edx, &r->__ss.__esi, &r->__ss.__edi);
String_Format3(&str, "eip=%x ebp=%x esp=%x\n", &r->__ss.__eip, &r->__ss.__ebp, &r->__ss.__esp);
#elif defined __x86_64__
String_Format3(&str, "rax=%x rbx=%x rcx=%x\n", &r->__ss.__rax, &r->__ss.__rbx, &r->__ss.__rcx);
String_Format3(&str, "rdx=%x rsi=%x rdi=%x\n", &r->__ss.__rdx, &r->__ss.__rsi, &r->__ss.__rdi);
String_Format3(&str, "rip=%x rbp=%x rsp=%x\n", &r->__ss.__rip, &r->__ss.__rbp, &r->__ss.__rsp);
String_Format3(&str, "r8 =%x r9 =%x r10=%x\n", &r->__ss.__r8, &r->__ss.__r9, &r->__ss.__r10);
String_Format3(&str, "r11=%x r12=%x r13=%x\n", &r->__ss.__r11, &r->__ss.__r12, &r->__ss.__r13);
String_Format2(&str, "r14=%x r15=%x\n", &r->__ss.__r14, &r->__ss.__r15);
#else
#error "Unknown machine type"
#endif
#endif
#if defined CC_BUILD_BSD
#if defined __i386__
String_Format3(&str, "eax=%x ebx=%x ecx=%x\n", &r.mc_eax, &r.mc_ebx, &r.mc_ecx);
String_Format3(&str, "edx=%x esi=%x edi=%x\n", &r.mc_edx, &r.mc_esi, &r.mc_edi);
String_Format3(&str, "eip=%x ebp=%x esp=%x\n", &r.mc_eip, &r.mc_ebp, &r.mc_esp);
#elif defined __x86_64__
String_Format3(&str, "rax=%x rbx=%x rcx=%x\n", &r.mc_rax, &r.mc_rbx, &r.mc_rcx);
String_Format3(&str, "rdx=%x rsi=%x rdi=%x\n", &r.mc_rdx, &r.mc_rsi, &r.mc_rdi);
String_Format3(&str, "rip=%x rbp=%x rsp=%x\n", &r.mc_rip, &r.mc_rbp, &r.mc_rsp);
String_Format3(&str, "r8 =%x r9 =%x r10=%x\n", &r.mc_r8, &r.mc_r9, &r.mc_r10);
String_Format3(&str, "r11=%x r12=%x r13=%x\n", &r.mc_r11, &r.mc_r12, &r.mc_r13);
String_Format2(&str, "r14=%x r15=%x\n", &r.mc_r14, &r.mc_r15);
#else
#error "Unknown machine type"
#endif
#endif
Logger_Log(&str);
}
#endif
#if defined CC_BUILD_LINUX || defined CC_BUILD_SOLARIS
static void Logger_DumpMisc(void* ctx) {
const static String memMap = String_FromConst("-- memory map --\n");
String str; char strBuffer[STRING_SIZE * 5];
int n, fd;
Logger_Log(&memMap);
/* dumps all known ranges of memory */
fd = open("/proc/self/maps", O_RDONLY);
if (fd < 0) return;
String_InitArray(str, strBuffer);
while ((n = read(fd, str.buffer, str.capacity)) > 0) {
str.length = n;
Logger_Log(&str);
}
close(fd);
}
#elif defined CC_BUILD_OSX || defined CC_BUILD_BSD
static void Logger_DumpMisc(void* ctx) { }
#endif
/*########################################################################################################################*
*----------------------------------------------------------Common---------------------------------------------------------*
*#########################################################################################################################*/
void Logger_DialogWarn(ReturnCode res, const char* place) {
String msg; char msgBuffer[STRING_SIZE * 2];
String_InitArray_NT(msg, msgBuffer);
String_Format2(&msg, "Error %h when %c", &res, place);
msg.buffer[msg.length] = '\0';
Window_ShowDialog("Error", msg.buffer);
}
void Logger_DialogWarn2(ReturnCode res, const char* place, const String* path) {
String msg; char msgBuffer[STRING_SIZE * 4];
String_InitArray_NT(msg, msgBuffer);
String_Format3(&msg, "Error %h when %c '%s'", &res, place, path);
msg.buffer[msg.length] = '\0';
Window_ShowDialog("Error", msg.buffer);
}
Logger_WarnFunc Logger_Warn = Logger_DialogWarn;
Logger_Warn2Func Logger_Warn2 = Logger_DialogWarn2;
static FileHandle logFile;
static struct Stream logStream;
static bool logOpen;
void Logger_Log(const String* msg) {
const static String path = String_FromConst("client.log");
ReturnCode res;
if (!logOpen) {
logOpen = true;
res = File_Append(&logFile, &path);
if (!res) Stream_FromFile(&logStream, logFile);
}
if (!logStream.Meta.File) return;
Stream_Write(&logStream, msg->buffer, msg->length);
}
static void Logger_AbortCommon(ReturnCode result, const char* raw_msg, void* ctx) {
String msg; char msgBuffer[3070 + 1];
String_InitArray_NT(msg, msgBuffer);
String_Format4(&msg, "--------------------%cClassiCube crashed.%cMessage: %c%c",
Platform_NewLine, Platform_NewLine, raw_msg, Platform_NewLine);
#ifdef CC_COMMIT_SHA
String_Format2(&msg, "Commit SHA: %c%c", CC_COMMIT_SHA, Platform_NewLine);
#endif
if (result) {
String_Format2(&msg, "%h%c", &result, Platform_NewLine);
} else { result = 1; }
Logger_Log(&msg);
Logger_DumpRegisters(ctx);
Logger_DumpBacktrace(&msg, ctx);
Logger_DumpMisc(ctx);
if (logStream.Meta.File) File_Close(logFile);
String_AppendConst(&msg, "Full details of the crash have been logged to 'client.log'.\n");
String_AppendConst(&msg, "Please report the crash on the ClassiCube forums so we can fix it.");
msg.buffer[msg.length] = '\0';
Window_ShowDialog("We're sorry", msg.buffer);
Platform_Exit(result);
}
void Logger_Abort(const char* raw_msg) { Logger_Abort2(0, raw_msg); }