* Backported crash dumping system for Win32 - see 1.2 log for a full …

…description

* Fixed new m_ident compile under Win32

git-svn-id: http://svn.inspircd.org/repository/branches/1_1_stable@8016 e03df62e-2008-0410-955e-edbf42e46eb7

src/inspircd.cpp

@@ -1170,14 +1170,31 @@ int InspIRCd::Run()
  * An ircd in four lines! bwahahaha. ahahahahaha. ahahah *cough*.
  */
 
-int main(int argc, char** argv)
+int ircd(int argc, char** argv)
 {
 	SI = new InspIRCd(argc, argv);
 	SI->Run();
 	delete SI;
 	return 0;
 }
 
+#ifdef WINDOWS
+
+int main(int argc, char ** argv)
+{
+	__try {
+		ircd(argc,argv);
+	} __except(__exceptionHandler(GetExceptionInformation())) {}
+	return 0;
+}
+
+#else
+int main(int argc, char** argv)
+{
+	return ircd(argc,argv);
+}
+#endif
+
 /* this returns true when all modules are satisfied that the user should be allowed onto the irc server
  * (until this returns true, a user will block in the waiting state, waiting to connect up to the
  * registration timeout maximum seconds)

src/modules/m_ident.cpp

@@ -149,7 +149,7 @@ class ModuleIdent : public Module
 	std::string IdentBindIP;
  public:
 	ModuleIdent(InspIRCd *Me)
-		: Module::Module(Me)
+		: Module(Me)
 	{
 		OnRehash(NULL, "");
 	}

win/inspircdVC71.vcproj

@@ -33,7 +33,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				AdditionalDependencies="ws2_32.lib mswsock.lib"
+				AdditionalDependencies="ws2_32.lib mswsock.lib dbghelp.lib"
 				ShowProgress="0"
 				OutputFile="$(OutDir)/inspircd.exe"
 				LinkIncremental="1"

win/inspircd_win32wrapper.cpp

@@ -525,3 +525,68 @@ int gettimeofday(struct timeval * tv, void * tz)
 	return 0;
 }
 
+#ifdef ENABLE_CRASHDUMPS
+int __exceptionHandler(PEXCEPTION_POINTERS pExceptPtrs)
+{
+	SYSTEMTIME _time;
+	HANDLE hDump;
+	char mod[MAX_PATH*2];
+	char * pMod = mod;
+	char dump_filename[MAX_PATH];
+	MINIDUMP_EXCEPTION_INFORMATION dumpInfo;
+	DWORD code;
+
+	if(pExceptPtrs == NULL) {
+		__try {
+			RaiseException(EXCEPTION_BREAKPOINT, 0, 0, NULL);
+		} __except(__exceptionHandler(GetExceptionInformation()), EXCEPTION_CONTINUE_EXECUTION) {}
+	}
+
+	printf("Exception caught at 0x%.8X! Attempting to write crash dump file.\n", (unsigned long)pExceptPtrs->ExceptionRecord->ExceptionAddress);
+
+	if(GetModuleFileName(0, mod, MAX_PATH*2) > 0)
+	{
+		if( (pMod = strrchr(mod, '\\')) != NULL )
+			++pMod;
+		else
+			strcpy(mod, "unk");
+	}
+	else
+		strcpy(mod, "unk");
+
+	GetSystemTime(&_time);
+	snprintf(dump_filename, MAX_PATH, "dump-%s-%u-%u-%u-%u-%u-%u.dmp",
+		pMod, _time.wYear, _time.wMonth, _time.wDay, _time.wHour, _time.wMinute, _time.wSecond);
+
+	hDump = CreateFile(dump_filename, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_WRITE_THROUGH, 0);
+	if(hDump != INVALID_HANDLE_VALUE)
+	{
+		dumpInfo.ClientPointers = FALSE;
+		dumpInfo.ExceptionPointers = pExceptPtrs;
+		dumpInfo.ThreadId = GetCurrentThreadId();
+
+		/* let's write a full memory dump. insp shouldn't be using much memory anyway, and it will help a lot with debugging. */
+		MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hDump, MiniDumpWithFullMemory, &dumpInfo, NULL, NULL);
+		FlushFileBuffers(hDump);
+		CloseHandle(hDump);
+	}
+
+	/* check for a debugger */
+	__asm {
+		pushad
+		pushfd
+		mov eax, fs:[18h]
+		mov eax, dword ptr [eax+30h]
+		mov ebx, dword ptr [eax]
+		mov code, ebx
+		popfd
+		popad
+	}
+
+	/* break into debugger if we have one */
+	if(code & 0x10000)
+		return EXCEPTION_CONTINUE_SEARCH;
+	else	/* otherwise exit abnormally */
+		return EXCEPTION_CONTINUE_EXECUTION;
+}
+#endif

win/inspircd_win32wrapper.h

@@ -21,6 +21,7 @@
 /* Define the WINDOWS macro. This means we're building on windows to the rest of the server.
    I think this is more reasonable than using WIN32, especially if we're gonna be doing 64-bit compiles */
 #define WINDOWS 1
+#define ENABLE_CRASHDUMPS 1
 
 /* Make builds smaller, leaner and faster */
 #define VC_EXTRALEAN
@@ -66,6 +67,10 @@
 #include <stdio.h>
 #include <algorithm>
 
+#ifdef ENABLE_CRASHDUMPS
+#include <DbgHelp.h>
+#endif
+
 /* strcasecmp is not defined on windows by default */
 #define strcasecmp _stricmp
 
@@ -188,5 +193,10 @@ CoreExport void ClearConsole();
 /* Windows does not have gettimeofday() */
 CoreExport int gettimeofday(struct timeval * tv, void * tz);
 
+#ifdef ENABLE_CRASHDUMPS
+typedef struct _EXCEPTION_POINTERS EXCEPTION_POINTERS, *PEXCEPTION_POINTERS;
+int __cdecl __exceptionHandler(PEXCEPTION_POINTERS pExceptPtrs);
+#endif
+
 #endif