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OpenTTD/src/win32.cpp

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/* $Id$ */
/** @file win32.cpp Implementation of MS Windows system calls */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "saveload.h"
#include "gfx_func.h"
#include "textbuf_gui.h"
#include "fileio.h"
#include "rev.h"
#include <windows.h>
#include <winnt.h>
#include <wininet.h>
#include <io.h>
#include <fcntl.h>
#include <shlobj.h> // SHGetFolderPath
#include "variables.h"
#include "win32.h"
#include "fios.h" // opendir/readdir/closedir
#include "fileio.h"
#include "core/alloc_func.hpp"
#include "functions.h"
#include "core/random_func.hpp"
#include "core/bitmath_func.hpp"
#include "string_func.h"
#include "gamelog.h"
#include <ctype.h>
#include <tchar.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#if defined(_MSC_VER) && !defined(WINCE)
#include <dbghelp.h>
#endif
static bool _has_console;
static bool cursor_visible = true;
bool MyShowCursor(bool show)
{
if (cursor_visible == show) return show;
cursor_visible = show;
ShowCursor(show);
return !show;
}
/** Helper function needed by dynamically loading libraries
* XXX: Hurray for MS only having an ANSI GetProcAddress function
* on normal windows and no Wide version except for in Windows Mobile/CE */
bool LoadLibraryList(Function proc[], const char *dll)
{
while (*dll != '\0') {
HMODULE lib;
lib = LoadLibrary(MB_TO_WIDE(dll));
if (lib == NULL) return false;
for (;;) {
FARPROC p;
while (*dll++ != '\0') { /* Nothing */ }
if (*dll == '\0') break;
#if defined(WINCE)
p = GetProcAddress(lib, MB_TO_WIDE(dll));
#else
p = GetProcAddress(lib, dll);
#endif
if (p == NULL) return false;
*proc++ = (Function)p;
}
dll++;
}
return true;
}
#ifdef _MSC_VER
static const char *_exception_string = NULL;
void SetExceptionString(const char *s, ...)
{
va_list va;
char buf[512];
va_start(va, s);
vsnprintf(buf, lengthof(buf), s, va);
va_end(va);
_exception_string = strdup(buf);
}
#endif
void ShowOSErrorBox(const char *buf)
{
MyShowCursor(true);
MessageBox(GetActiveWindow(), MB_TO_WIDE(buf), _T("Error!"), MB_ICONSTOP);
/* if exception tracker is enabled, we crash here to let the exception handler handle it. */
#if defined(WIN32_EXCEPTION_TRACKER) && !defined(_DEBUG)
if (*buf == '!') {
_exception_string = buf;
*(byte*)0 = 0;
}
#endif
}
#if defined(_MSC_VER) && !defined(WINCE)
static void *_safe_esp;
static char *_crash_msg;
static bool _expanded;
static bool _did_emerg_save;
static int _ident;
struct DebugFileInfo {
uint32 size;
uint32 crc32;
SYSTEMTIME file_time;
};
static uint32 *_crc_table;
static void MakeCRCTable(uint32 *table)
{
uint32 crc, poly = 0xEDB88320L;
int i;
int j;
_crc_table = table;
for (i = 0; i != 256; i++) {
crc = i;
for (j = 8; j != 0; j--) {
crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);
}
table[i] = crc;
}
}
static uint32 CalcCRC(byte *data, uint size, uint32 crc)
{
for (; size > 0; size--) {
crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];
}
return crc;
}
static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)
{
HANDLE file;
memset(dfi, 0, sizeof(dfi));
file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
if (file != INVALID_HANDLE_VALUE) {
byte buffer[1024];
DWORD numread;
uint32 filesize = 0;
FILETIME write_time;
uint32 crc = (uint32)-1;
for (;;) {
if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)
break;
filesize += numread;
crc = CalcCRC(buffer, numread, crc);
}
dfi->size = filesize;
dfi->crc32 = crc ^ (uint32)-1;
if (GetFileTime(file, NULL, NULL, &write_time)) {
FileTimeToSystemTime(&write_time, &dfi->file_time);
}
CloseHandle(file);
}
}
static char *PrintModuleInfo(char *output, HMODULE mod)
{
TCHAR buffer[MAX_PATH];
DebugFileInfo dfi;
GetModuleFileName(mod, buffer, MAX_PATH);
GetFileInfo(&dfi, buffer);
output += sprintf(output, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",
WIDE_TO_MB(buffer),
mod,
dfi.size,
dfi.crc32,
dfi.file_time.wYear,
dfi.file_time.wMonth,
dfi.file_time.wDay,
dfi.file_time.wHour,
dfi.file_time.wMinute,
dfi.file_time.wSecond
);
return output;
}
static char *PrintModuleList(char *output)
{
BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);
if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {
HMODULE modules[100];
DWORD needed;
BOOL res;
HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
if (proc != NULL) {
res = EnumProcessModules(proc, modules, sizeof(modules), &needed);
CloseHandle(proc);
if (res) {
size_t count = min(needed / sizeof(HMODULE), lengthof(modules));
for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, modules[i]);
return output;
}
}
}
output = PrintModuleInfo(output, NULL);
return output;
}
static const TCHAR _crash_desc[] =
_T("A serious fault condition occured in the game. The game will shut down.\n")
_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")
_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")
_T("The information contained in the report is displayed below.\n")
_T("Press \"Emergency save\" to attempt saving the game.");
static const TCHAR _save_succeeded[] =
_T("Emergency save succeeded.\n")
_T("Be aware that critical parts of the internal game state may have become ")
_T("corrupted. The saved game is not guaranteed to work.");
static bool EmergencySave()
{
SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);
return true;
}
/* Disable the crash-save submit code as it's not used */
#if 0
struct WinInetProcs {
HINTERNET (WINAPI *InternetOpen)(LPCTSTR, DWORD, LPCTSTR, LPCTSTR, DWORD);
HINTERNET (WINAPI *InternetConnect)(HINTERNET, LPCTSTR, INTERNET_PORT, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD);
HINTERNET (WINAPI *HttpOpenRequest)(HINTERNET, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR *, DWORD, DWORD);
BOOL (WINAPI *HttpSendRequest)(HINTERNET, LPCTSTR, DWORD, LPVOID, DWORD);
BOOL (WINAPI *InternetCloseHandle)(HINTERNET);
BOOL (WINAPI *HttpQueryInfo)(HINTERNET, DWORD, LPVOID, LPDWORD, LPDWORD);
};
#define M(x) x "\0"
#if defined(UNICODE)
# define W(x) x "W"
#else
# define W(x) x "A"
#endif
static const char wininet_files[] =
M("wininet.dll")
M(W("InternetOpen"))
M(W("InternetConnect"))
M(W("HttpOpenRequest"))
M(W("HttpSendRequest"))
M("InternetCloseHandle")
M(W("HttpQueryInfo"))
M("");
#undef W
#undef M
static WinInetProcs _wininet;
static const TCHAR *SubmitCrashReport(HWND wnd, void *msg, size_t msglen, const TCHAR *arg)
{
HINTERNET inet, conn, http;
const TCHAR *err = NULL;
DWORD code, len;
static TCHAR buf[100];
TCHAR buff[100];
if (_wininet.InternetOpen == NULL && !LoadLibraryList((Function*)&_wininet, wininet_files)) return _T("can't load wininet.dll");
inet = _wininet.InternetOpen(_T("OTTD"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );
if (inet == NULL) { err = _T("internetopen failed"); goto error1; }
conn = _wininet.InternetConnect(inet, _T("www.openttd.org"), INTERNET_DEFAULT_HTTP_PORT, _T(""), _T(""), INTERNET_SERVICE_HTTP, 0, 0);
if (conn == NULL) { err = _T("internetconnect failed"); goto error2; }
_sntprintf(buff, lengthof(buff), _T("/crash.php?file=%s&ident=%d"), arg, _ident);
http = _wininet.HttpOpenRequest(conn, _T("POST"), buff, NULL, NULL, NULL, INTERNET_FLAG_NO_CACHE_WRITE , 0);
if (http == NULL) { err = _T("httpopenrequest failed"); goto error3; }
if (!_wininet.HttpSendRequest(http, _T("Content-type: application/binary"), -1, msg, (DWORD)msglen)) { err = _T("httpsendrequest failed"); goto error4; }
len = sizeof(code);
if (!_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &code, &len, 0)) { err = _T("httpqueryinfo failed"); goto error4; }
if (code != 200) {
int l = _sntprintf(buf, lengthof(buf), _T("Server said: %d "), code);
len = sizeof(buf) - l;
_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_TEXT, buf + l, &len, 0);
err = buf;
}
error4:
_wininet.InternetCloseHandle(http);
error3:
_wininet.InternetCloseHandle(conn);
error2:
_wininet.InternetCloseHandle(inet);
error1:
return err;
}
static void SubmitFile(HWND wnd, const TCHAR *file)
{
HANDLE h;
unsigned long size;
unsigned long read;
void *mem;
h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (h == NULL) return;
size = GetFileSize(h, NULL);
if (size > 500000) goto error1;
mem = MallocT<byte>(size);
if (mem == NULL) goto error1;
if (!ReadFile(h, mem, size, &read, NULL) || read != size) goto error2;
SubmitCrashReport(wnd, mem, size, file);
error2:
free(mem);
error1:
CloseHandle(h);
}
#endif /* Disabled crash-submit procedures */
static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };
static void SetWndSize(HWND wnd, int mode)
{
RECT r, r2;
int offs;
GetWindowRect(wnd, &r);
SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);
if (mode >= 0) {
GetWindowRect(GetDlgItem(wnd, 11), &r2);
offs = r2.bottom - r2.top + 10;
if (!mode) offs = -offs;
SetWindowPos(wnd, HWND_TOPMOST, 0, 0,
r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);
} else {
SetWindowPos(wnd, HWND_TOPMOST,
(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,
(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,
0, 0, SWP_NOSIZE);
}
}
static bool DoEmergencySave(HWND wnd)
{
bool b = false;
EnableWindow(GetDlgItem(wnd, 13), FALSE);
_did_emerg_save = true;
__try {
b = EmergencySave();
} __except (1) {}
return b;
}
static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg) {
case WM_INITDIALOG: {
#if defined(UNICODE)
/* We need to put the crash-log in a seperate buffer because the default
* buffer in MB_TO_WIDE is not large enough (512 chars) */
wchar_t crash_msgW[8096];
#endif
SetDlgItemText(wnd, 10, _crash_desc);
SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));
SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
SetWndSize(wnd, -1);
} return TRUE;
case WM_COMMAND:
switch (wParam) {
case 12: /* Close */
ExitProcess(0);
case 13: /* Emergency save */
if (DoEmergencySave(wnd)) {
MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);
} else {
MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);
}
break;
/* Disable the crash-save submit code as it's not used */
#if 0
case 14: { /* Submit crash report */
const TCHAR *s;
SetCursor(LoadCursor(NULL, IDC_WAIT));
s = SubmitCrashReport(wnd, _crash_msg, strlen(_crash_msg), _T(""));
if (s != NULL) {
MessageBox(wnd, s, _T("Error"), MB_ICONSTOP);
break;
}
// try to submit emergency savegame
if (_did_emerg_save || DoEmergencySave(wnd)) SubmitFile(wnd, _T("crash.sav"));
// try to submit the autosaved game
if (_opt.autosave) {
TCHAR buf[40];
_sntprintf(buf, lengthof(buf), _T("autosave%d.sav"), (_autosave_ctr - 1) & 3);
SubmitFile(wnd, buf);
}
EnableWindow(GetDlgItem(wnd, 14), FALSE);
SetCursor(LoadCursor(NULL, IDC_ARROW));
MessageBox(wnd, _T("Crash report submitted. Thank you."), _T("Crash Report"), MB_ICONINFORMATION);
} break;
#endif /* Disabled crash-submit procedures */
case 15: /* Expand window to show crash-message */
_expanded ^= 1;
SetWndSize(wnd, _expanded);
break;
}
return TRUE;
case WM_CLOSE: ExitProcess(0);
}
return FALSE;
}
static void Handler2()
{
ShowCursor(TRUE);
ShowWindow(GetActiveWindow(), FALSE);
DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);
}
extern bool CloseConsoleLogIfActive();
static HANDLE _file_crash_log;
static void GamelogPrintCrashLogProc(const char *s)
{
DWORD num_written;
WriteFile(_file_crash_log, s, strlen(s), &num_written, NULL);
WriteFile(_file_crash_log, "\r\n", strlen("\r\n"), &num_written, NULL);
}
static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
{
char *output;
static bool had_exception = false;
if (had_exception) ExitProcess(0);
had_exception = true;
_ident = GetTickCount(); // something pretty unique
MakeCRCTable((uint32*)alloca(256 * sizeof(uint32)));
_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, 8192);
{
SYSTEMTIME time;
GetLocalTime(&time);
output += sprintf(output,
"*** OpenTTD Crash Report ***\r\n"
"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"
"Build: %s built on " __DATE__ " " __TIME__ "\r\n",
time.wYear,
time.wMonth,
time.wDay,
time.wHour,
time.wMinute,
time.wSecond,
_openttd_revision
);
}
if (_exception_string)
output += sprintf(output, "Reason: %s\r\n", _exception_string);
#ifdef _M_AMD64
output += sprintf(output, "Exception %.8X at %.16IX\r\n"
"Registers:\r\n"
"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"
"RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\r\n"
"R8: %.16llX R9: %.16llX R10: %.16llX R11: %.16llX\r\n"
"R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\r\n"
"RIP: %.16llX EFLAGS: %.8X\r\n"
"\r\nBytes at CS:RIP:\r\n",
ep->ExceptionRecord->ExceptionCode,
ep->ExceptionRecord->ExceptionAddress,
ep->ContextRecord->Rax,
ep->ContextRecord->Rbx,
ep->ContextRecord->Rcx,
ep->ContextRecord->Rdx,
ep->ContextRecord->Rsi,
ep->ContextRecord->Rdi,
ep->ContextRecord->Rbp,
ep->ContextRecord->Rsp,
ep->ContextRecord->R8,
ep->ContextRecord->R9,
ep->ContextRecord->R10,
ep->ContextRecord->R11,
ep->ContextRecord->R12,
ep->ContextRecord->R13,
ep->ContextRecord->R14,
ep->ContextRecord->R15,
ep->ContextRecord->Rip,
ep->ContextRecord->EFlags
);
#else
output += sprintf(output, "Exception %.8X at %.8X\r\n"
"Registers:\r\n"
" EAX: %.8X EBX: %.8X ECX: %.8X EDX: %.8X\r\n"
" ESI: %.8X EDI: %.8X EBP: %.8X ESP: %.8X\r\n"
" EIP: %.8X EFLAGS: %.8X\r\n"
"\r\nBytes at CS:EIP:\r\n",
ep->ExceptionRecord->ExceptionCode,
ep->ExceptionRecord->ExceptionAddress,
ep->ContextRecord->Eax,
ep->ContextRecord->Ebx,
ep->ContextRecord->Ecx,
ep->ContextRecord->Edx,
ep->ContextRecord->Esi,
ep->ContextRecord->Edi,
ep->ContextRecord->Ebp,
ep->ContextRecord->Esp,
ep->ContextRecord->Eip,
ep->ContextRecord->EFlags
);
#endif
{
#ifdef _M_AMD64
byte *b = (byte*)ep->ContextRecord->Rip;
#else
byte *b = (byte*)ep->ContextRecord->Eip;
#endif
int i;
for (i = 0; i != 24; i++) {
if (IsBadReadPtr(b, 1)) {
output += sprintf(output, " ??"); // OCR: WAS: , 0);
} else {
output += sprintf(output, " %.2X", *b);
}
b++;
}
output += sprintf(output,
"\r\n"
"\r\nStack trace: \r\n"
);
}
{
int i, j;
#ifdef _M_AMD64
uint32 *b = (uint32*)ep->ContextRecord->Rsp;
#else
uint32 *b = (uint32*)ep->ContextRecord->Esp;
#endif
for (j = 0; j != 24; j++) {
for (i = 0; i != 8; i++) {
if (IsBadReadPtr(b, sizeof(uint32))) {
output += sprintf(output, " ????????"); //OCR: WAS - , 0);
} else {
output += sprintf(output, " %.8X", *b);
}
b++;
}
output += sprintf(output, "\r\n");
}
}
output += sprintf(output, "\r\nModule information:\r\n");
output = PrintModuleList(output);
{
OSVERSIONINFO os;
os.dwOSVersionInfoSize = sizeof(os);
GetVersionEx(&os);
output += sprintf(output, "\r\nSystem information:\r\n"
" Windows version %d.%d %d %s\r\n\r\n",
os.dwMajorVersion, os.dwMinorVersion, os.dwBuildNumber, os.szCSDVersion);
}
_file_crash_log = CreateFile(_T("crash.log"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
if (_file_crash_log != INVALID_HANDLE_VALUE) {
DWORD num_written;
WriteFile(_file_crash_log, _crash_msg, output - _crash_msg, &num_written, NULL);
}
#if !defined(_DEBUG)
HMODULE dbghelp = LoadLibrary(_T("dbghelp.dll"));
if (dbghelp != NULL) {
typedef BOOL (WINAPI *MiniDumpWriteDump_t)(HANDLE, DWORD, HANDLE,
MINIDUMP_TYPE,
CONST PMINIDUMP_EXCEPTION_INFORMATION,
CONST PMINIDUMP_USER_STREAM_INFORMATION,
CONST PMINIDUMP_CALLBACK_INFORMATION);
MiniDumpWriteDump_t funcMiniDumpWriteDump = (MiniDumpWriteDump_t)GetProcAddress(dbghelp, "MiniDumpWriteDump");
if (funcMiniDumpWriteDump != NULL) {
HANDLE file = CreateFile(_T("crash.dmp"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
HANDLE proc = GetCurrentProcess();
DWORD procid = GetCurrentProcessId();
MINIDUMP_EXCEPTION_INFORMATION mdei;
MINIDUMP_USER_STREAM userstream;
MINIDUMP_USER_STREAM_INFORMATION musi;
char msg[] = "****** Built on " __DATE__ " " __TIME__ ". ******";
userstream.Type = LastReservedStream + 1;
userstream.Buffer = msg;
userstream.BufferSize = sizeof(msg);
musi.UserStreamCount = 1;
musi.UserStreamArray = &userstream;
mdei.ThreadId = GetCurrentThreadId();
mdei.ExceptionPointers = ep;
mdei.ClientPointers = false;
funcMiniDumpWriteDump(proc, procid, file, MiniDumpWithDataSegs, &mdei, &musi, NULL);
}
FreeLibrary(dbghelp);
}
#endif
if (_file_crash_log != INVALID_HANDLE_VALUE) {
GamelogPrint(&GamelogPrintCrashLogProc);
CloseHandle(_file_crash_log);
}
/* Close any possible log files */
CloseConsoleLogIfActive();
if (_safe_esp) {
#ifdef _M_AMD64
ep->ContextRecord->Rip = (DWORD64)Handler2;
ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
#else
ep->ContextRecord->Eip = (DWORD)Handler2;
ep->ContextRecord->Esp = (DWORD)_safe_esp;
#endif
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_EXECUTE_HANDLER;
}
#ifdef _M_AMD64
extern "C" void *_get_save_esp();
#endif
static void Win32InitializeExceptions()
{
#ifdef _M_AMD64
_safe_esp = _get_save_esp();
#else
_asm {
mov _safe_esp, esp
}
#endif
SetUnhandledExceptionFilter(ExceptionHandler);
}
#endif /* _MSC_VER */
/* Code below for windows version of opendir/readdir/closedir copied and
* modified from Jan Wassenberg's GPL implementation posted over at
* http://www.gamedev.net/community/forums/topic.asp?topic_id=364584&whichpage=1&#2398903 */
/* suballocator - satisfies most requests with a reusable static instance.
* this avoids hundreds of alloc/free which would fragment the heap.
* To guarantee concurrency, we fall back to malloc if the instance is
* already in use (it's important to avoid suprises since this is such a
* low-level routine). */
static DIR _global_dir;
static LONG _global_dir_is_in_use = false;
static inline DIR *dir_calloc()
{
DIR *d;
if (InterlockedExchange(&_global_dir_is_in_use, true) == (LONG)true) {
d = CallocT<DIR>(1);
} else {
d = &_global_dir;
memset(d, 0, sizeof(*d));
}
return d;
}
static inline void dir_free(DIR *d)
{
if (d == &_global_dir) {
_global_dir_is_in_use = (LONG)false;
} else {
free(d);
}
}
DIR *opendir(const TCHAR *path)
{
DIR *d;
UINT sem = SetErrorMode(SEM_FAILCRITICALERRORS); // disable 'no-disk' message box
DWORD fa = GetFileAttributes(path);
if ((fa != INVALID_FILE_ATTRIBUTES) && (fa & FILE_ATTRIBUTE_DIRECTORY)) {
d = dir_calloc();
if (d != NULL) {
TCHAR search_path[MAX_PATH];
bool slash = path[_tcslen(path) - 1] == '\\';
/* build search path for FindFirstFile, try not to append additional slashes
* as it throws Win9x off its groove for root directories */
_sntprintf(search_path, lengthof(search_path), _T("%s%s*"), path, slash ? _T("") : _T("\\"));
*lastof(search_path) = '\0';
d->hFind = FindFirstFile(search_path, &d->fd);
if (d->hFind != INVALID_HANDLE_VALUE ||
GetLastError() == ERROR_NO_MORE_FILES) { // the directory is empty
d->ent.dir = d;
d->at_first_entry = true;
} else {
dir_free(d);
d = NULL;
}
} else {
errno = ENOMEM;
}
} else {
/* path not found or not a directory */
d = NULL;
errno = ENOENT;
}
SetErrorMode(sem); // restore previous setting
return d;
}
struct dirent *readdir(DIR *d)
{
DWORD prev_err = GetLastError(); // avoid polluting last error
if (d->at_first_entry) {
/* the directory was empty when opened */
if (d->hFind == INVALID_HANDLE_VALUE) return NULL;
d->at_first_entry = false;
} else if (!FindNextFile(d->hFind, &d->fd)) { // determine cause and bail
if (GetLastError() == ERROR_NO_MORE_FILES) SetLastError(prev_err);
return NULL;
}
/* This entry has passed all checks; return information about it.
* (note: d_name is a pointer; see struct dirent definition) */
d->ent.d_name = d->fd.cFileName;
return &d->ent;
}
int closedir(DIR *d)
{
FindClose(d->hFind);
dir_free(d);
return 0;
}
bool FiosIsRoot(const char *file)
{
return file[3] == '\0'; // C:\...
}
void FiosGetDrives()
{
#if defined(WINCE)
/* WinCE only knows one drive: / */
FiosItem *fios = _fios_items.Append();
fios->type = FIOS_TYPE_DRIVE;
fios->mtime = 0;
snprintf(fios->name, lengthof(fios->name), PATHSEP "");
ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));
#else
TCHAR drives[256];
const TCHAR *s;
GetLogicalDriveStrings(sizeof(drives), drives);
for (s = drives; *s != '\0';) {
FiosItem *fios = _fios_items.Append();
fios->type = FIOS_TYPE_DRIVE;
fios->mtime = 0;
snprintf(fios->name, lengthof(fios->name), "%c:", s[0] & 0xFF);
ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));
while (*s++ != '\0') { /* Nothing */ }
}
#endif
}
bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)
{
/* hectonanoseconds between Windows and POSIX epoch */
static const int64 posix_epoch_hns = 0x019DB1DED53E8000LL;
const WIN32_FIND_DATA *fd = &ent->dir->fd;
sb->st_size = ((uint64) fd->nFileSizeHigh << 32) + fd->nFileSizeLow;
/* UTC FILETIME to seconds-since-1970 UTC
* we just have to subtract POSIX epoch and scale down to units of seconds.
* http://www.gamedev.net/community/forums/topic.asp?topic_id=294070&whichpage=1&#1860504
* XXX - not entirely correct, since filetimes on FAT aren't UTC but local,
* this won't entirely be correct, but we use the time only for comparsion. */
sb->st_mtime = (time_t)((*(uint64*)&fd->ftLastWriteTime - posix_epoch_hns) / 1E7);
sb->st_mode = (fd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)? S_IFDIR : S_IFREG;
return true;
}
bool FiosIsHiddenFile(const struct dirent *ent)
{
return (ent->dir->fd.dwFileAttributes & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) != 0;
}
bool FiosGetDiskFreeSpace(const char *path, uint32 *tot)
{
UINT sem = SetErrorMode(SEM_FAILCRITICALERRORS); // disable 'no-disk' message box
bool retval = false;
TCHAR root[4];
DWORD spc, bps, nfc, tnc;
_sntprintf(root, lengthof(root), _T("%c:") _T(PATHSEP), path[0]);
if (tot != NULL && GetDiskFreeSpace(root, &spc, &bps, &nfc, &tnc)) {
*tot = ((spc * bps) * (uint64)nfc) >> 20;
retval = true;
}
SetErrorMode(sem); // reset previous setting
return retval;
}
static int ParseCommandLine(char *line, char **argv, int max_argc)
{
int n = 0;
do {
/* skip whitespace */
while (*line == ' ' || *line == '\t') line++;
/* end? */
if (*line == '\0') break;
/* special handling when quoted */
if (*line == '"') {
argv[n++] = ++line;
while (*line != '"') {
if (*line == '\0') return n;
line++;
}
} else {
argv[n++] = line;
while (*line != ' ' && *line != '\t') {
if (*line == '\0') return n;
line++;
}
}
*line++ = '\0';
} while (n != max_argc);
return n;
}
void CreateConsole()
{
#if defined(WINCE)
/* WinCE doesn't support console stuff */
#else
HANDLE hand;
CONSOLE_SCREEN_BUFFER_INFO coninfo;
if (_has_console) return;
_has_console = true;
AllocConsole();
hand = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(hand, &coninfo);
coninfo.dwSize.Y = 500;
SetConsoleScreenBufferSize(hand, coninfo.dwSize);
/* redirect unbuffered STDIN, STDOUT, STDERR to the console */
#if !defined(__CYGWIN__)
*stdout = *_fdopen( _open_osfhandle((intptr_t)hand, _O_TEXT), "w" );
*stdin = *_fdopen(_open_osfhandle((intptr_t)GetStdHandle(STD_INPUT_HANDLE), _O_TEXT), "r" );
*stderr = *_fdopen(_open_osfhandle((intptr_t)GetStdHandle(STD_ERROR_HANDLE), _O_TEXT), "w" );
#else
/* open_osfhandle is not in cygwin */
*stdout = *fdopen(1, "w" );
*stdin = *fdopen(0, "r" );
*stderr = *fdopen(2, "w" );
#endif
setvbuf(stdin, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
#endif
}
void ShowInfo(const char *str)
{
if (_has_console) {
fprintf(stderr, "%s\n", str);
} else {
bool old;
#if defined(UNICODE)
/* We need to put the text in a seperate buffer because the default
* buffer in MB_TO_WIDE might not be large enough (512 chars) */
wchar_t help_msgW[4096];
#endif
ReleaseCapture();
_left_button_clicked =_left_button_down = false;
old = MyShowCursor(true);
if (MessageBox(GetActiveWindow(), MB_TO_WIDE_BUFFER(str, help_msgW, lengthof(help_msgW)), _T("OpenTTD"), MB_ICONINFORMATION | MB_OKCANCEL) == IDCANCEL) {
CreateConsole();
}
MyShowCursor(old);
}
}
#if defined(WINCE)
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
#else
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
#endif
{
int argc;
char *argv[64]; // max 64 command line arguments
char *cmdline;
#if !defined(UNICODE)
_codepage = GetACP(); // get system codepage as some kind of a default
#endif /* UNICODE */
#if defined(UNICODE)
#if !defined(WINCE)
/* Check if a win9x user started the win32 version */
if (HasBit(GetVersion(), 31)) error("This version of OpenTTD doesn't run on windows 95/98/ME.\nPlease download the win9x binary and try again.");
#endif
/* For UNICODE we need to convert the commandline to char* _AND_
* save it because argv[] points into this buffer and thus needs to
* be available between subsequent calls to FS2OTTD() */
char cmdlinebuf[MAX_PATH];
#endif /* UNICODE */
cmdline = WIDE_TO_MB_BUFFER(GetCommandLine(), cmdlinebuf, lengthof(cmdlinebuf));
#if defined(_DEBUG)
CreateConsole();
#endif
#if !defined(WINCE)
_set_error_mode(_OUT_TO_MSGBOX); // force assertion output to messagebox
#endif
/* setup random seed to something quite random */
SetRandomSeed(GetTickCount());
argc = ParseCommandLine(cmdline, argv, lengthof(argv));
#if defined(WIN32_EXCEPTION_TRACKER)
Win32InitializeExceptions();
#endif
#if defined(WIN32_EXCEPTION_TRACKER_DEBUG)
_try {
LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep);
#endif
ttd_main(argc, argv);
#if defined(WIN32_EXCEPTION_TRACKER_DEBUG)
} _except (ExceptionHandler(_exception_info())) {}
#endif
return 0;
}
#if defined(WINCE)
void GetCurrentDirectoryW(int length, wchar_t *path)
{
/* Get the name of this module */
GetModuleFileName(NULL, path, length);
/* Remove the executable name, this we call CurrentDir */
wchar_t *pDest = wcsrchr(path, '\\');
if (pDest != NULL) {
int result = pDest - path + 1;
path[result] = '\0';
}
}
#endif
char *getcwd(char *buf, size_t size)
{
#if defined(WINCE)
TCHAR path[MAX_PATH];
GetModuleFileName(NULL, path, MAX_PATH);
convert_from_fs(path, buf, size);
/* GetModuleFileName returns dir with file, so remove everything behind latest '\\' */
char *p = strrchr(buf, '\\');
if (p != NULL) *p = '\0';
#elif defined(UNICODE)
TCHAR path[MAX_PATH];
GetCurrentDirectory(MAX_PATH - 1, path);
convert_from_fs(path, buf, size);
#else
GetCurrentDirectory(size, buf);
#endif
return buf;
}
void DetermineBasePaths(const char *exe)
{
extern void ScanForTarFiles();
char tmp[MAX_PATH];
TCHAR path[MAX_PATH];
#ifdef WITH_PERSONAL_DIR
SHGetFolderPath(NULL, CSIDL_PERSONAL, NULL, SHGFP_TYPE_CURRENT, path);
strncpy(tmp, WIDE_TO_MB_BUFFER(path, tmp, lengthof(tmp)), lengthof(tmp));
AppendPathSeparator(tmp, MAX_PATH);
ttd_strlcat(tmp, PERSONAL_DIR, MAX_PATH);
AppendPathSeparator(tmp, MAX_PATH);
_searchpaths[SP_PERSONAL_DIR] = strdup(tmp);
SHGetFolderPath(NULL, CSIDL_COMMON_DOCUMENTS, NULL, SHGFP_TYPE_CURRENT, path);
strncpy(tmp, WIDE_TO_MB_BUFFER(path, tmp, lengthof(tmp)), lengthof(tmp));
AppendPathSeparator(tmp, MAX_PATH);
ttd_strlcat(tmp, PERSONAL_DIR, MAX_PATH);
AppendPathSeparator(tmp, MAX_PATH);
_searchpaths[SP_SHARED_DIR] = strdup(tmp);
#else
_searchpaths[SP_PERSONAL_DIR] = NULL;
_searchpaths[SP_SHARED_DIR] = NULL;
#endif
/* Get the path to working directory of OpenTTD */
getcwd(tmp, lengthof(tmp));
AppendPathSeparator(tmp, MAX_PATH);
_searchpaths[SP_WORKING_DIR] = strdup(tmp);
if (!GetModuleFileName(NULL, path, lengthof(path))) {
DEBUG(misc, 0, "GetModuleFileName failed (%d)\n", GetLastError());
_searchpaths[SP_BINARY_DIR] = NULL;
} else {
TCHAR exec_dir[MAX_PATH];
_tcsncpy(path, MB_TO_WIDE_BUFFER(exe, path, lengthof(path)), lengthof(path));
if (!GetFullPathName(path, lengthof(exec_dir), exec_dir, NULL)) {
DEBUG(misc, 0, "GetFullPathName failed (%d)\n", GetLastError());
_searchpaths[SP_BINARY_DIR] = NULL;
} else {
strncpy(tmp, WIDE_TO_MB_BUFFER(exec_dir, tmp, lengthof(tmp)), lengthof(tmp));
char *s = strrchr(tmp, PATHSEPCHAR);
*(s + 1) = '\0';
_searchpaths[SP_BINARY_DIR] = strdup(tmp);
}
}
_searchpaths[SP_INSTALLATION_DIR] = NULL;
_searchpaths[SP_APPLICATION_BUNDLE_DIR] = NULL;
ScanForTarFiles();
}
/**
* Insert a chunk of text from the clipboard onto the textbuffer. Get TEXT clipboard
* and append this up to the maximum length (either absolute or screenlength). If maxlength
* is zero, we don't care about the screenlength but only about the physical length of the string
* @param tb Textbuf type to be changed
* @return true on successful change of Textbuf, or false otherwise
*/
bool InsertTextBufferClipboard(Textbuf *tb)
{
HGLOBAL cbuf;
char utf8_buf[512];
const char *ptr;
WChar c;
uint16 width, length;
if (IsClipboardFormatAvailable(CF_UNICODETEXT)) {
OpenClipboard(NULL);
cbuf = GetClipboardData(CF_UNICODETEXT);
ptr = (const char*)GlobalLock(cbuf);
const char *ret = convert_from_fs((wchar_t*)ptr, utf8_buf, lengthof(utf8_buf));
GlobalUnlock(cbuf);
CloseClipboard();
if (*ret == '\0') return false;
#if !defined(UNICODE)
} else if (IsClipboardFormatAvailable(CF_TEXT)) {
OpenClipboard(NULL);
cbuf = GetClipboardData(CF_TEXT);
ptr = (const char*)GlobalLock(cbuf);
ttd_strlcpy(utf8_buf, FS2OTTD(ptr), lengthof(utf8_buf));
GlobalUnlock(cbuf);
CloseClipboard();
#endif /* UNICODE */
} else {
return false;
}
width = length = 0;
for (ptr = utf8_buf; (c = Utf8Consume(&ptr)) != '\0';) {
if (!IsPrintable(c)) break;
byte len = Utf8CharLen(c);
if (tb->length + length >= tb->maxlength - len) break;
byte charwidth = GetCharacterWidth(FS_NORMAL, c);
if (tb->maxwidth != 0 && width + tb->width + charwidth > tb->maxwidth) break;
width += charwidth;
length += len;
}
if (length == 0) return false;
memmove(tb->buf + tb->caretpos + length, tb->buf + tb->caretpos, tb->length - tb->caretpos);
memcpy(tb->buf + tb->caretpos, utf8_buf, length);
tb->width += width;
tb->caretxoffs += width;
tb->length += length;
tb->caretpos += length;
assert(tb->length < tb->maxlength);
tb->buf[tb->length] = '\0'; // terminating zero
return true;
}
void CSleep(int milliseconds)
{
Sleep(milliseconds);
}
/** Utility function to get the current timestamp in milliseconds
* Useful for profiling */
int64 GetTS()
{
static double freq;
__int64 value;
if (!freq) {
QueryPerformanceFrequency((LARGE_INTEGER*)&value);
freq = (double)1000000 / value;
}
QueryPerformanceCounter((LARGE_INTEGER*)&value);
return (__int64)(value * freq);
}
/**
* Convert to OpenTTD's encoding from that of the local environment.
* When the project is built in UNICODE, the system codepage is irrelevant and
* the input string is wide. In ANSI mode, the string is in the
* local codepage which we'll convert to wide-char, and then to UTF-8.
* OpenTTD internal encoding is UTF8.
* The returned value's contents can only be guaranteed until the next call to
* this function. So if the value is needed for anything else, use convert_from_fs
* @param name pointer to a valid string that will be converted (local, or wide)
* @return pointer to the converted string; if failed string is of zero-length
* @see the current code-page comes from video\win32_v.cpp, event-notification
* WM_INPUTLANGCHANGE */
const char *FS2OTTD(const TCHAR *name)
{
static char utf8_buf[512];
#if defined(UNICODE)
return convert_from_fs(name, utf8_buf, lengthof(utf8_buf));
#else
char *s = utf8_buf;
for (; *name != '\0'; name++) {
wchar_t w;
int len = MultiByteToWideChar(_codepage, 0, name, 1, &w, 1);
if (len != 1) {
DEBUG(misc, 0, "[utf8] M2W error converting '%c'. Errno %d", *name, GetLastError());
continue;
}
if (s + Utf8CharLen(w) >= lastof(utf8_buf)) break;
s += Utf8Encode(s, w);
}
*s = '\0';
return utf8_buf;
#endif /* UNICODE */
}
/**
* Convert from OpenTTD's encoding to that of the local environment.
* When the project is built in UNICODE the system codepage is irrelevant and
* the converted string is wide. In ANSI mode, the UTF8 string is converted
* to multi-byte.
* OpenTTD internal encoding is UTF8.
* The returned value's contents can only be guaranteed until the next call to
* this function. So if the value is needed for anything else, use convert_from_fs
* @param name pointer to a valid string that will be converted (UTF8)
* @return pointer to the converted string; if failed string is of zero-length
* @see the current code-page comes from video\win32_v.cpp, event-notification
* WM_INPUTLANGCHANGE */
const TCHAR *OTTD2FS(const char *name)
{
static TCHAR system_buf[512];
#if defined(UNICODE)
return convert_to_fs(name, system_buf, lengthof(system_buf));
#else
char *s = system_buf;
for (WChar c; (c = Utf8Consume(&name)) != '\0';) {
if (s >= lastof(system_buf)) break;
char mb;
int len = WideCharToMultiByte(_codepage, 0, (wchar_t*)&c, 1, &mb, 1, NULL, NULL);
if (len != 1) {
DEBUG(misc, 0, "[utf8] W2M error converting '0x%X'. Errno %d", c, GetLastError());
continue;
}
*s++ = mb;
}
*s = '\0';
return system_buf;
#endif /* UNICODE */
}
/** Convert to OpenTTD's encoding from that of the environment in
* UNICODE. OpenTTD encoding is UTF8, local is wide
* @param name pointer to a valid string that will be converted
* @param utf8_buf pointer to a valid buffer that will receive the converted string
* @param buflen length in characters of the receiving buffer
* @return pointer to utf8_buf. If conversion fails the string is of zero-length */
char *convert_from_fs(const wchar_t *name, char *utf8_buf, size_t buflen)
{
int len = WideCharToMultiByte(CP_UTF8, 0, name, -1, utf8_buf, (int)buflen, NULL, NULL);
if (len == 0) {
DEBUG(misc, 0, "[utf8] W2M error converting wide-string. Errno %d", GetLastError());
utf8_buf[0] = '\0';
}
return utf8_buf;
}
/** Convert from OpenTTD's encoding to that of the environment in
* UNICODE. OpenTTD encoding is UTF8, local is wide
* @param name pointer to a valid string that will be converted
* @param utf16_buf pointer to a valid wide-char buffer that will receive the
* converted string
* @param buflen length in wide characters of the receiving buffer
* @return pointer to utf16_buf. If conversion fails the string is of zero-length */
wchar_t *convert_to_fs(const char *name, wchar_t *utf16_buf, size_t buflen)
{
int len = MultiByteToWideChar(CP_UTF8, 0, name, -1, utf16_buf, (int)buflen);
if (len == 0) {
DEBUG(misc, 0, "[utf8] M2W error converting '%s'. Errno %d", name, GetLastError());
utf16_buf[0] = '\0';
}
return utf16_buf;
}
/** Our very own SHGetFolderPath function for support of windows operating
* systems that don't have this function (eg Win9x, etc.). We try using the
* native function, and if that doesn't exist we will try a more crude approach
* of environment variables and hope for the best */
HRESULT OTTDSHGetFolderPath(HWND hwnd, int csidl, HANDLE hToken, DWORD dwFlags, LPTSTR pszPath)
{
static HRESULT (WINAPI *SHGetFolderPath)(HWND, int, HANDLE, DWORD, LPTSTR) = NULL;
static bool first_time = true;
/* We only try to load the library one time; if it fails, it fails */
if (first_time) {
#if defined(UNICODE)
# define W(x) x "W"
#else
# define W(x) x "A"
#endif
if (!LoadLibraryList((Function*)&SHGetFolderPath, "SHFolder.dll\0" W("SHGetFolderPath") "\0\0")) {
DEBUG(misc, 0, "Unable to load " W("SHGetFolderPath") "from SHFolder.dll");
}
#undef W
first_time = false;
}
if (SHGetFolderPath != NULL) return SHGetFolderPath(hwnd, csidl, hToken, dwFlags, pszPath);
/* SHGetFolderPath doesn't exist, try a more conservative approach,
* eg environment variables. This is only included for legacy modes
* MSDN says: that 'pszPath' is a "Pointer to a null-terminated string of
* length MAX_PATH which will receive the path" so let's assume that
* Windows 95 with Internet Explorer 5.0, Windows 98 with Internet Explorer 5.0,
* Windows 98 Second Edition (SE), Windows NT 4.0 with Internet Explorer 5.0,
* Windows NT 4.0 with Service Pack 4 (SP4) */
{
DWORD ret;
switch (csidl) {
case CSIDL_FONTS: /* Get the system font path, eg %WINDIR%\Fonts */
ret = GetEnvironmentVariable(_T("WINDIR"), pszPath, MAX_PATH);
if (ret == 0) break;
_tcsncat(pszPath, _T("\\Fonts"), MAX_PATH);
return (HRESULT)0;
break;
/* XXX - other types to go here when needed... */
}
}
return E_INVALIDARG;
}
/** Determine the current user's locale. */
const char *GetCurrentLocale(const char *)
{
char lang[9], country[9];
if (GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO639LANGNAME, lang, lengthof(lang)) == 0 ||
GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO3166CTRYNAME, country, lengthof(country)) == 0) {
/* Unable to retrieve the locale. */
return NULL;
}
/* Format it as 'en_us'. */
static char retbuf[6] = {lang[0], lang[1], '_', country[0], country[1], 0};
return retbuf;
}
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