1

/* $Id$ */

     2

     3

/** @file win32.cpp Implementation of MS Windows system calls */

     4

     5

#include "stdafx.h"

     6

#include "openttd.h"

     7

#include "debug.h"

     8

#include "functions.h"

     9

#include "helpers.hpp"

    10

#include "saveload.h"

    11

#include "string.h"

    13

#include "textbuf_gui.h"

    14

#include "fileio.h"

    15

#include <windows.h>

    16

#include <winnt.h>

    17

#include <wininet.h>

    18

#include <io.h>

    19

#include <fcntl.h>

    20

#include <shlobj.h> // SHGetFolderPath

    21

#include "variables.h"

    22

#include "win32.h"

    23

#include "fios.h" // opendir/readdir/closedir

    24

#include "fileio.h"

    25

#include <ctype.h>

    26

#include <tchar.h>

    27

#include <errno.h>

    28

#include <sys/types.h>

    29

#include <sys/stat.h>

    30

#include <shlobj.h>

    31

#if defined(_MSC_VER) && !defined(WINCE)

    32

	#include <dbghelp.h>

    33

#endif

    34

    35

static bool _has_console;

    36

    37

#if defined(__MINGW32__)

    38

	#include <stdint.h>

    39

#endif

    40

    41

static bool cursor_visible = true;

    42

    43

bool MyShowCursor(bool show)

    44

{

    45

	if (cursor_visible == show) return show;

    46

    47

	cursor_visible = show;

    48

	ShowCursor(show);

    49

    50

	return !show;

    51

}

    52

    53

/** Helper function needed by dynamically loading libraries

    54

 * XXX: Hurray for MS only having an ANSI GetProcAddress function

    55

 * on normal windows and no Wide version except for in Windows Mobile/CE */

    56

bool LoadLibraryList(Function proc[], const char *dll)

    57

{

    58

	while (*dll != '\0') {

    59

		HMODULE lib;

    60

		lib = LoadLibrary(MB_TO_WIDE(dll));

    61

    62

		if (lib == NULL) return false;

    63

		for (;;) {

    64

			FARPROC p;

    65

    66

			while (*dll++ != '\0');

    67

			if (*dll == '\0') break;

    68

#if defined(WINCE)

    69

			p = GetProcAddress(lib, MB_TO_WIDE(dll));

    70

#else

    71

			p = GetProcAddress(lib, dll);

    72

#endif

    73

			if (p == NULL) return false;

    74

			*proc++ = (Function)p;

    75

		}

    76

		dll++;

    77

	}

    78

	return true;

    79

}

    80

    81

#ifdef _MSC_VER

    82

static const char *_exception_string = NULL;

    83

void SetExceptionString(const char *s, ...)

    84

{

    85

	va_list va;

    86

	char buf[512];

    87

    88

	va_start(va, s);

    89

	vsnprintf(buf, lengthof(buf), s, va);

    90

	va_end(va);

    91

    92

	_exception_string = strdup(buf);

    93

}

    94

#endif

    95

    96

void ShowOSErrorBox(const char *buf)

    97

{

    98

	MyShowCursor(true);

    99

	MessageBox(GetActiveWindow(), MB_TO_WIDE(buf), _T("Error!"), MB_ICONSTOP);

   100

   101

/* if exception tracker is enabled, we crash here to let the exception handler handle it. */

   102

#if defined(WIN32_EXCEPTION_TRACKER) && !defined(_DEBUG)

   103

	if (*buf == '!') {

   104

		_exception_string = buf;

   105

		*(byte*)0 = 0;

   106

	}

   107

#endif

   108

}

   109

   110

#if defined(_MSC_VER) && !defined(WINCE)

   111

   112

static void *_safe_esp;

   113

static char *_crash_msg;

   114

static bool _expanded;

   115

static bool _did_emerg_save;

   116

static int _ident;

   117

   118

struct DebugFileInfo {

   119

	uint32 size;

   120

	uint32 crc32;

   121

	SYSTEMTIME file_time;

   122

};

   123

   124

static uint32 *_crc_table;

   125

   126

static void MakeCRCTable(uint32 *table)

   127

{

   128

	uint32 crc, poly = 0xEDB88320L;

   129

	int i;

   130

	int j;

   131

   132

	_crc_table = table;

   133

   134

	for (i = 0; i != 256; i++) {

   135

		crc = i;

   136

		for (j = 8; j != 0; j--) {

   137

			crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);

   138

		}

   139

		table[i] = crc;

   140

	}

   141

}

   142

   143

static uint32 CalcCRC(byte *data, uint size, uint32 crc)

   144

{

   145

	for (; size > 0; size--) {

   146

		crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];

   147

	}

   148

	return crc;

   149

}

   150

   151

static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)

   152

{

   153

	HANDLE file;

   154

	memset(dfi, 0, sizeof(dfi));

   155

   156

	file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);

   157

	if (file != INVALID_HANDLE_VALUE) {

   158

		byte buffer[1024];

   159

		DWORD numread;

   160

		uint32 filesize = 0;

   161

		FILETIME write_time;

   162

		uint32 crc = (uint32)-1;

   163

   164

		for (;;) {

   165

			if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)

   166

				break;

   167

			filesize += numread;

   168

			crc = CalcCRC(buffer, numread, crc);

   169

		}

   170

		dfi->size = filesize;

   171

		dfi->crc32 = crc ^ (uint32)-1;

   172

   173

		if (GetFileTime(file, NULL, NULL, &write_time)) {

   174

			FileTimeToSystemTime(&write_time, &dfi->file_time);

   175

		}

   176

		CloseHandle(file);

   177

	}

   178

}

   179

   180

   181

static char *PrintModuleInfo(char *output, HMODULE mod)

   182

{

   183

	TCHAR buffer[MAX_PATH];

   184

	DebugFileInfo dfi;

   185

   186

	GetModuleFileName(mod, buffer, MAX_PATH);

   187

	GetFileInfo(&dfi, buffer);

   188

	output += sprintf(output, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",

   189

		WIDE_TO_MB(buffer),

   190

		mod,

   191

		dfi.size,

   192

		dfi.crc32,

   193

		dfi.file_time.wYear,

   194

		dfi.file_time.wMonth,

   195

		dfi.file_time.wDay,

   196

		dfi.file_time.wHour,

   197

		dfi.file_time.wMinute,

   198

		dfi.file_time.wSecond

   199

	);

   200

	return output;

   201

}

   202

   203

static char *PrintModuleList(char *output)

   204

{

   205

	BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);

   206

   207

	if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {

   208

		HMODULE modules[100];

   209

		DWORD needed;

   210

		BOOL res;

   211

		int count, i;

   212

   213

		HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());

   214

		if (proc != NULL) {

   215

			res = EnumProcessModules(proc, modules, sizeof(modules), &needed);

   216

			CloseHandle(proc);

   217

			if (res) {

   218

				count = min(needed / sizeof(HMODULE), lengthof(modules));

   219

   220

				for (i = 0; i != count; i++) output = PrintModuleInfo(output, modules[i]);

   221

				return output;

   222

			}

   223

		}

   224

	}

   225

	output = PrintModuleInfo(output, NULL);

   226

	return output;

   227

}

   228

   229

static const TCHAR _crash_desc[] =

   230

	_T("A serious fault condition occured in the game. The game will shut down.\n")

   231

	_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")

   232

	_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")

   233

	_T("The information contained in the report is displayed below.\n")

   234

	_T("Press \"Emergency save\" to attempt saving the game.");

   235

   236

static const TCHAR _save_succeeded[] =

   237

	_T("Emergency save succeeded.\n")

   238

	_T("Be aware that critical parts of the internal game state may have become ")

   239

	_T("corrupted. The saved game is not guaranteed to work.");

   240

   241

static bool EmergencySave()

   242

{

   243

	SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);

   244

	return true;

   245

}

   246

   247

/* Disable the crash-save submit code as it's not used */

   248

#if 0

   249

   250

struct WinInetProcs {

   251

	HINTERNET (WINAPI *InternetOpen)(LPCTSTR,DWORD, LPCTSTR, LPCTSTR, DWORD);

   252

	HINTERNET (WINAPI *InternetConnect)(HINTERNET, LPCTSTR, INTERNET_PORT, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD);

   253

	HINTERNET (WINAPI *HttpOpenRequest)(HINTERNET, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR *, DWORD, DWORD);

   254

	BOOL (WINAPI *HttpSendRequest)(HINTERNET, LPCTSTR, DWORD, LPVOID, DWORD);

   255

	BOOL (WINAPI *InternetCloseHandle)(HINTERNET);

   256

	BOOL (WINAPI *HttpQueryInfo)(HINTERNET, DWORD, LPVOID, LPDWORD, LPDWORD);

   257

};

   258

   259

#define M(x) x "\0"

   260

#if defined(UNICODE)

   261

# define W(x) x "W"

   262

#else

   263

# define W(x) x "A"

   264

#endif

   265

static const char wininet_files[] =

   266

	M("wininet.dll")

   267

	M(W("InternetOpen"))

   268

	M(W("InternetConnect"))

   269

	M(W("HttpOpenRequest"))

   270

	M(W("HttpSendRequest"))

   271

	M("InternetCloseHandle")

   272

	M(W("HttpQueryInfo"))

   273

	M("");

   274

#undef W

   275

#undef M

   276

   277

static WinInetProcs _wininet;

   278

   279

static const TCHAR *SubmitCrashReport(HWND wnd, void *msg, size_t msglen, const TCHAR *arg)

   280

{

   281

	HINTERNET inet, conn, http;

   282

	const TCHAR *err = NULL;

   283

	DWORD code, len;

   284

	static TCHAR buf[100];

   285

	TCHAR buff[100];

   286

   287

	if (_wininet.InternetOpen == NULL && !LoadLibraryList((Function*)&_wininet, wininet_files)) return _T("can't load wininet.dll");

   288

   289

	inet = _wininet.InternetOpen(_T("OTTD"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );

   290

	if (inet == NULL) { err = _T("internetopen failed"); goto error1; }

   291

   292

	conn = _wininet.InternetConnect(inet, _T("www.openttd.org"), INTERNET_DEFAULT_HTTP_PORT, _T(""), _T(""), INTERNET_SERVICE_HTTP, 0, 0);

   293

	if (conn == NULL) { err = _T("internetconnect failed"); goto error2; }

   294

   295

	_sntprintf(buff, lengthof(buff), _T("/crash.php?file=%s&ident=%d"), arg, _ident);

   296

   297

	http = _wininet.HttpOpenRequest(conn, _T("POST"), buff, NULL, NULL, NULL, INTERNET_FLAG_NO_CACHE_WRITE , 0);

   298

	if (http == NULL) { err = _T("httpopenrequest failed"); goto error3; }

   299

   300

	if (!_wininet.HttpSendRequest(http, _T("Content-type: application/binary"), -1, msg, (DWORD)msglen)) { err = _T("httpsendrequest failed"); goto error4; }

   301

   302

	len = sizeof(code);

   303

	if (!_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &code, &len, 0)) { err = _T("httpqueryinfo failed"); goto error4; }

   304

   305

	if (code != 200) {

   306

		int l = _sntprintf(buf, lengthof(buf), _T("Server said: %d "), code);

   307

		len = sizeof(buf) - l;

   308

		_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_TEXT, buf + l, &len, 0);

   309

		err = buf;

   310

	}

   311

   312

error4:

   313

	_wininet.InternetCloseHandle(http);

   314

error3:

   315

	_wininet.InternetCloseHandle(conn);

   316

error2:

   317

	_wininet.InternetCloseHandle(inet);

   318

error1:

   319

	return err;

   320

}

   321

   322

static void SubmitFile(HWND wnd, const TCHAR *file)

   323

{

   324

	HANDLE h;

   325

	unsigned long size;

   326

	unsigned long read;

   327

	void *mem;

   328

   329

	h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

   330

	if (h == NULL) return;

   331

   332

	size = GetFileSize(h, NULL);

   333

	if (size > 500000) goto error1;

   334

   335

	mem = MallocT<byte>(size);

   336

	if (mem == NULL) goto error1;

   337

   338

	if (!ReadFile(h, mem, size, &read, NULL) || read != size) goto error2;

   339

   340

	SubmitCrashReport(wnd, mem, size, file);

   341

   342

error2:

   343

	free(mem);

   344

error1:

   345

	CloseHandle(h);

   346

}

   347

   348

#endif /* Disabled crash-submit procedures */

   349

   350

static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };

   351

   352

static void SetWndSize(HWND wnd, int mode)

   353

{

   354

	RECT r, r2;

   355

	int offs;

   356

   357

	GetWindowRect(wnd, &r);

   358

   359

	SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);

   360

   361

	if (mode >= 0) {

   362

		GetWindowRect(GetDlgItem(wnd, 11), &r2);

   363

		offs = r2.bottom - r2.top + 10;

   364

		if (!mode) offs = -offs;

   365

		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,

   366

			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);

   367

	} else {

   368

		SetWindowPos(wnd, HWND_TOPMOST,

   369

			(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,

   370

			(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,

   371

			0, 0, SWP_NOSIZE);

   372

	}

   373

}

   374

   375

static bool DoEmergencySave(HWND wnd)

   376

{

   377

	bool b = false;

   378

   379

	EnableWindow(GetDlgItem(wnd, 13), FALSE);

   380

	_did_emerg_save = true;

   381

	__try {

   382

		b = EmergencySave();

   383

	} __except (1) {}

   384

	return b;

   385

}

   386

   387

static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)

   388

{

   389

	switch (msg) {

   390

		case WM_INITDIALOG: {

   391

#if defined(UNICODE)

   392

			/* We need to put the crash-log in a seperate buffer because the default

   393

			 * buffer in MB_TO_WIDE is not large enough (512 chars) */

   394

			wchar_t crash_msgW[8096];

   395

#endif

   396

			SetDlgItemText(wnd, 10, _crash_desc);

   397

			SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));

   398

			SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);

   399

			SetWndSize(wnd, -1);

   400

		} return TRUE;

   401

		case WM_COMMAND:

   402

			switch (wParam) {

   403

				case 12: /* Close */

   404

					ExitProcess(0);

   405

				case 13: /* Emergency save */

   406

					if (DoEmergencySave(wnd)) {

   407

						MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);

   408

					} else {

   409

						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);

   410

					}

   411

					break;

   412

/* Disable the crash-save submit code as it's not used */

   413

#if 0

   414

				case 14: { /* Submit crash report */

   415

					const TCHAR *s;

   416

   417

					SetCursor(LoadCursor(NULL, IDC_WAIT));

   418

   419

					s = SubmitCrashReport(wnd, _crash_msg, strlen(_crash_msg), _T(""));

   420

					if (s != NULL) {

   421

						MessageBox(wnd, s, _T("Error"), MB_ICONSTOP);

   422

						break;

   423

					}

   424

   425

					// try to submit emergency savegame

   426

					if (_did_emerg_save || DoEmergencySave(wnd)) SubmitFile(wnd, _T("crash.sav"));

   427

   428

					// try to submit the autosaved game

   429

					if (_opt.autosave) {

   430

						TCHAR buf[40];

   431

						_sntprintf(buf, lengthof(buf), _T("autosave%d.sav"), (_autosave_ctr - 1) & 3);

   432

						SubmitFile(wnd, buf);

   433

					}

   434

					EnableWindow(GetDlgItem(wnd, 14), FALSE);

   435

					SetCursor(LoadCursor(NULL, IDC_ARROW));

   436

					MessageBox(wnd, _T("Crash report submitted. Thank you."), _T("Crash Report"), MB_ICONINFORMATION);

   437

				} break;

   438

#endif /* Disabled crash-submit procedures */

   439

				case 15: /* Expand window to show crash-message */

   440

					_expanded ^= 1;

   441

					SetWndSize(wnd, _expanded);

   442

					break;

   443

			}

   444

			return TRUE;

   445

		case WM_CLOSE: ExitProcess(0);

   446

	}

   447

   448

	return FALSE;

   449

}

   450

   451

static void Handler2()

   452

{

   453

	ShowCursor(TRUE);

   454

	ShowWindow(GetActiveWindow(), FALSE);

   455

	DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);

   456

}

   457

   458

extern bool CloseConsoleLogIfActive();

   459

   460

static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)

   461

{

   462

	extern const char _openttd_revision[];

   463

	char *output;

   464

	static bool had_exception = false;

   465

   466

	if (had_exception) ExitProcess(0);

   467

	had_exception = true;

   468

   469

	_ident = GetTickCount(); // something pretty unique

   470

   471

	MakeCRCTable((uint32*)alloca(256 * sizeof(uint32)));

   472

	_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, 8192);

   473

   474

	{

   475

		SYSTEMTIME time;

   476

		GetLocalTime(&time);

   477

		output += sprintf(output,

   478

			"*** OpenTTD Crash Report ***\r\n"

   479

			"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"

   480

			"Build: %s built on " __DATE__ " " __TIME__ "\r\n",

   481

			time.wYear,

   482

			time.wMonth,

   483

			time.wDay,

   484

			time.wHour,

   485

			time.wMinute,

   486

			time.wSecond,

   487

			_openttd_revision

   488

		);

   489

	}

   490

   491

	if (_exception_string)

   492

		output += sprintf(output, "Reason: %s\r\n", _exception_string);

   493

   494

#ifdef _M_AMD64

   495

	output += sprintf(output, "Exception %.8X at %.16IX\r\n"

   496

		"Registers:\r\n"

   497

		"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"