reactos/base/shell/cmd/cmd.c

   1 /*
   2  *  CMD.C - command-line interface.
   3  *
   4  *
   5  *  History:
   6  *
   7  *    17 Jun 1994 (Tim Norman)
   8  *        started.
   9  *
  10  *    08 Aug 1995 (Matt Rains)
  11  *        I have cleaned up the source code. changes now bring this source
  12  *        into guidelines for recommended programming practice.
  13  *
  14  *        A added the the standard FreeDOS GNU licence test to the
  15  *        initialize() function.
  16  *
  17  *        Started to replace puts() with printf(). this will help
  18  *        standardize output. please follow my lead.
  19  *
  20  *        I have added some constants to help making changes easier.
  21  *
  22  *    15 Dec 1995 (Tim Norman)
  23  *        major rewrite of the code to make it more efficient and add
  24  *        redirection support (finally!)
  25  *
  26  *    06 Jan 1996 (Tim Norman)
  27  *        finished adding redirection support!  Changed to use our own
  28  *        exec code (MUCH thanks to Svante Frey!!)
  29  *
  30  *    29 Jan 1996 (Tim Norman)
  31  *        added support for CHDIR, RMDIR, MKDIR, and ERASE, as per
  32  *        suggestion of Steffan Kaiser
  33  *
  34  *        changed "file not found" error message to "bad command or
  35  *        filename" thanks to Dustin Norman for noticing that confusing
  36  *        message!
  37  *
  38  *        changed the format to call internal commands (again) so that if
  39  *        they want to split their commands, they can do it themselves
  40  *        (none of the internal functions so far need that much power, anyway)
  41  *
  42  *    27 Aug 1996 (Tim Norman)
  43  *        added in support for Oliver Mueller's ALIAS command
  44  *
  45  *    14 Jun 1997 (Steffan Kaiser)
  46  *        added ctrl-break handling and error level
  47  *
  48  *    16 Jun 1998 (Rob Lake)
  49  *        Runs command.com if /P is specified in command line.  Command.com
  50  *        also stays permanent.  If /C is in the command line, starts the
  51  *        program next in the line.
  52  *
  53  *    21 Jun 1998 (Rob Lake)
  54  *        Fixed up /C so that arguments for the program
  55  *
  56  *    08-Jul-1998 (John P. Price)
  57  *        Now sets COMSPEC environment variable
  58  *        misc clean up and optimization
  59  *        added date and time commands
  60  *        changed to using spawnl instead of exec.  exec does not copy the
  61  *        environment to the child process!
  62  *
  63  *    14 Jul 1998 (Hans B Pufal)
  64  *        Reorganised source to be more efficient and to more closely
  65  *        follow MS-DOS conventions. (eg %..% environment variable
  66  *        replacement works form command line as well as batch file.
  67  *
  68  *        New organisation also properly support nested batch files.
  69  *
  70  *        New command table structure is half way towards providing a
  71  *        system in which COMMAND will find out what internal commands
  72  *        are loaded
  73  *
  74  *    24 Jul 1998 (Hans B Pufal) [HBP_003]
  75  *        Fixed return value when called with /C option
  76  *
  77  *    27 Jul 1998  John P. Price
  78  *        added config.h include
  79  *
  80  *    28 Jul 1998  John P. Price
  81  *        added showcmds function to show commands and options available
  82  *
  83  *    07-Aug-1998 (John P Price <linux-guru@gcfl.net>)
  84  *        Fixed carriage return output to better match MSDOS with echo
  85  *        on or off. (marked with "JPP 19980708")
  86  *
  87  *    07-Dec-1998 (Eric Kohl)
  88  *        First ReactOS release.
  89  *        Extended length of commandline buffers to 512.
  90  *
  91  *    13-Dec-1998 (Eric Kohl)
  92  *        Added COMSPEC environment variable.
  93  *        Added "/t" support (color) on cmd command line.
  94  *
  95  *    07-Jan-1999 (Eric Kohl)
  96  *        Added help text ("cmd /?").
  97  *
  98  *    25-Jan-1999 (Eric Kohl)
  99  *        Unicode and redirection safe!
 100  *        Fixed redirections and piping.
 101  *        Piping is based on temporary files, but basic support
 102  *        for anonymous pipes already exists.
 103  *
 104  *    27-Jan-1999 (Eric Kohl)
 105  *        Replaced spawnl() by CreateProcess().
 106  *
 107  *    22-Oct-1999 (Eric Kohl)
 108  *        Added break handler.
 109  *
 110  *    15-Dec-1999 (Eric Kohl)
 111  *        Fixed current directory
 112  *
 113  *    28-Dec-1999 (Eric Kohl)
 114  *        Restore window title after program/batch execution
 115  *
 116  *    03-Feb-2001 (Eric Kohl)
 117  *        Workaround because argc[0] is NULL under ReactOS
 118  *
 119  *    23-Feb-2001 (Carl Nettelblad <cnettel@hem.passagen.se>)
 120  *        %envvar% replacement conflicted with for.
 121  *
 122  *    30-Apr-2004 (Filip Navara <xnavara@volny.cz>)
 123  *       Make MakeSureDirectoryPathExistsEx unicode safe.
 124  *
 125  *    28-Mai-2004
 126  *       Removed MakeSureDirectoryPathExistsEx.
 127  *       Use the current directory if GetTempPath fails.
 128  *
 129  *    12-Jul-2004 (Jens Collin <jens.collin@lakhei.com>)
 130  *       Added ShellExecute call when all else fails to be able to "launch" any file.
 131  *
 132  *    02-Apr-2005 (Magnus Olsen <magnus@greatlord.com>)
 133  *        Remove all hardcode string to En.rc
 134  *
 135  *    06-May-2005 (Klemens Friedl <frik85@gmail.com>)
 136  *        Add 'help' command (list all commands plus description)
 137  *
 138  *    06-jul-2005 (Magnus Olsen <magnus@greatlord.com>)
 139  *        translate '%errorlevel%' to the internal value.
 140  *        Add proper memory alloc ProcessInput, the error
 141  *        handling for memory handling need to be improve
 142  */
 143
 144 #include "precomp.h"
 145 #include <reactos/buildno.h>
 146 #include <reactos/version.h>
 147
 148 typedef NTSTATUS (WINAPI *NtQueryInformationProcessProc)(HANDLE, PROCESSINFOCLASS,
 149                                                           PVOID, ULONG, PULONG);
 150 typedef NTSTATUS (WINAPI *NtReadVirtualMemoryProc)(HANDLE, PVOID, PVOID, ULONG, PULONG);
 151
 152 BOOL bExit = FALSE;       /* indicates EXIT was typed */
 153 BOOL bCanExit = TRUE;     /* indicates if this shell is exitable */
 154 BOOL bCtrlBreak = FALSE;  /* Ctrl-Break or Ctrl-C hit */
 155 BOOL bIgnoreEcho = FALSE; /* Set this to TRUE to prevent a newline, when executing a command */
 156 static BOOL bWaitForCommand = FALSE; /* When we are executing something passed on the commandline after /c or /k */
 157 INT  nErrorLevel = 0;     /* Errorlevel of last launched external program */
 158 CRITICAL_SECTION ChildProcessRunningLock;
 159 BOOL bUnicodeOutput = FALSE;
 160 BOOL bDisableBatchEcho = FALSE;
 161 BOOL bEnableExtensions = TRUE;
 162 BOOL bDelayedExpansion = FALSE;
 163 BOOL bTitleSet = FALSE;
 164 DWORD dwChildProcessId = 0;
 165 HANDLE hIn;
 166 LPTSTR lpOriginalEnvironment;
 167 HANDLE CMD_ModuleHandle;
 168
 169 static NtQueryInformationProcessProc NtQueryInformationProcessPtr = NULL;
 170 static NtReadVirtualMemoryProc       NtReadVirtualMemoryPtr = NULL;
 171
 172 #ifdef INCLUDE_CMD_COLOR
 173 WORD wDefColor = 0;     /* Default color */
 174 #endif
 175
 176 /*
 177  * convert
 178  *
 179  * insert commas into a number
 180  */
 181 INT
 182 ConvertULargeInteger(ULONGLONG num, LPTSTR des, UINT len, BOOL bPutSeparator)
 183 {
 184     TCHAR temp[39];   /* maximum length with nNumberGroups == 1 */
 185     UINT  n, iTarget;
 186
 187     if (len <= 1)
 188         return 0;
 189
 190     n = 0;
 191     iTarget = nNumberGroups;
 192     if (!nNumberGroups)
 193         bPutSeparator = FALSE;
 194
 195     do
 196     {
 197         if (iTarget == n && bPutSeparator)
 198         {
 199             iTarget += nNumberGroups + 1;
 200             temp[38 - n++] = cThousandSeparator;
 201         }
 202         temp[38 - n++] = (TCHAR)(num % 10) + _T('0');
 203         num /= 10;
 204     } while (num > 0);
 205     if (n > len-1)
 206         n = len-1;
 207
 208     memcpy(des, temp + 39 - n, n * sizeof(TCHAR));
 209     des[n] = _T('\0');
 210
 211     return n;
 212 }
 213
 214 /*
 215  * Is a process a console process?
 216  */
 217 static BOOL IsConsoleProcess(HANDLE Process)
 218 {
 219     NTSTATUS Status;
 220     PROCESS_BASIC_INFORMATION Info;
 221     PEB ProcessPeb;
 222     ULONG BytesRead;
 223
 224     if (NULL == NtQueryInformationProcessPtr || NULL == NtReadVirtualMemoryPtr)
 225     {
 226         return TRUE;
 227     }
 228
 229     Status = NtQueryInformationProcessPtr (
 230         Process, ProcessBasicInformation,
 231         &Info, sizeof(PROCESS_BASIC_INFORMATION), NULL);
 232     if (! NT_SUCCESS(Status))
 233     {
 234         WARN ("NtQueryInformationProcess failed with status %08x\n", Status);
 235         return TRUE;
 236     }
 237     Status = NtReadVirtualMemoryPtr (
 238         Process, Info.PebBaseAddress, &ProcessPeb,
 239         sizeof(PEB), &BytesRead);
 240     if (! NT_SUCCESS(Status) || sizeof(PEB) != BytesRead)
 241     {
 242         WARN ("Couldn't read virt mem status %08x bytes read %lu\n", Status, BytesRead);
 243         return TRUE;
 244     }
 245
 246     return IMAGE_SUBSYSTEM_WINDOWS_CUI == ProcessPeb.ImageSubsystem;
 247 }
 248
 249
 250
 251 #ifdef _UNICODE
 252 #define SHELLEXECUTETEXT    "ShellExecuteExW"
 253 #else
 254 #define SHELLEXECUTETEXT    "ShellExecuteExA"
 255 #endif
 256
 257 typedef BOOL (WINAPI *MYEX)(LPSHELLEXECUTEINFO lpExecInfo);
 258
 259 HANDLE RunFile(DWORD flags, LPTSTR filename, LPTSTR params,
 260                LPTSTR directory, INT show)
 261 {
 262     SHELLEXECUTEINFO sei;
 263     HMODULE     hShell32;
 264     MYEX        hShExt;
 265     BOOL        ret;
 266
 267     TRACE ("RunFile(%s)\n", debugstr_aw(filename));
 268     hShell32 = LoadLibrary(_T("SHELL32.DLL"));
 269     if (!hShell32)
 270     {
 271         WARN ("RunFile: couldn't load SHELL32.DLL!\n");
 272         return NULL;
 273     }
 274
 275     hShExt = (MYEX)(FARPROC)GetProcAddress(hShell32, SHELLEXECUTETEXT);
 276     if (!hShExt)
 277     {
 278         WARN ("RunFile: couldn't find ShellExecuteExA/W in SHELL32.DLL!\n");
 279         FreeLibrary(hShell32);
 280         return NULL;
 281     }
 282
 283     TRACE ("RunFile: ShellExecuteExA/W is at %x\n", hShExt);
 284
 285     memset(&sei, 0, sizeof sei);
 286     sei.cbSize = sizeof sei;
 287     sei.fMask = flags;
 288     sei.lpFile = filename;
 289     sei.lpParameters = params;
 290     sei.lpDirectory = directory;
 291     sei.nShow = show;
 292     ret = hShExt(&sei);
 293
 294     TRACE ("RunFile: ShellExecuteExA/W returned 0x%p\n", ret);
 295
 296     FreeLibrary(hShell32);
 297     return ret ? sei.hProcess : NULL;
 298 }
 299
 300
 301
 302 /*
 303  * This command (in first) was not found in the command table
 304  *
 305  * Full  - buffer to hold whole command line
 306  * First - first word on command line
 307  * Rest  - rest of command line
 308  */
 309 static INT
 310 Execute(LPTSTR Full, LPTSTR First, LPTSTR Rest, PARSED_COMMAND *Cmd)
 311 {
 312     TCHAR szFullName[MAX_PATH];
 313     TCHAR *first, *rest, *dot;
 314     TCHAR szWindowTitle[MAX_PATH], szNewTitle[MAX_PATH*2];
 315     DWORD dwExitCode = 0;
 316     TCHAR *FirstEnd;
 317     TCHAR szFullCmdLine [CMDLINE_LENGTH];
 318
 319     TRACE ("Execute: \'%s\' \'%s\'\n", debugstr_aw(First), debugstr_aw(Rest));
 320
 321     /* Though it was already parsed once, we have a different set of rules
 322        for parsing before we pass to CreateProcess */
 323     if (First[0] == _T('/') || (First[0] && First[1] == _T(':')))
 324     {
 325         /* Use the entire first word as the program name (no change) */
 326         FirstEnd = First + _tcslen(First);
 327     }
 328     else
 329     {
 330         /* If present in the first word, spaces and ,;=/ end the program
 331          * name and become the beginning of its parameters. */
 332         BOOL bInside = FALSE;
 333         for (FirstEnd = First; *FirstEnd; FirstEnd++)
 334         {
 335             if (!bInside && (_istspace(*FirstEnd) || _tcschr(_T(",;=/"), *FirstEnd)))
 336                 break;
 337             bInside ^= *FirstEnd == _T('"');
 338         }
 339     }
 340
 341     /* Copy the new first/rest into the buffer */
 342     first = Full;
 343     rest = &Full[FirstEnd - First + 1];
 344     _tcscpy(rest, FirstEnd);
 345     _tcscat(rest, Rest);
 346     *FirstEnd = _T('\0');
 347     _tcscpy(first, First);
 348
 349     /* check for a drive change */
 350     if ((_istalpha (first[0])) && (!_tcscmp (first + 1, _T(":"))))
 351     {
 352         BOOL working = TRUE;
 353         if (!SetCurrentDirectory(first))
 354         /* Guess they changed disc or something, handle that gracefully and get to root */
 355         {
 356             TCHAR str[4];
 357             str[0]=first[0];
 358             str[1]=_T(':');
 359             str[2]=_T('\\');
 360             str[3]=0;
 361             working = SetCurrentDirectory(str);
 362         }
 363
 364         if (!working) ConErrResPuts (STRING_FREE_ERROR1);
 365         return !working;
 366     }
 367
 368     /* get the PATH environment variable and parse it */
 369     /* search the PATH environment variable for the binary */
 370     StripQuotes(First);
 371     if (!SearchForExecutable(First, szFullName))
 372     {
 373         error_bad_command(first);
 374         return 1;
 375     }
 376
 377     /* Save the original console title and build a new one */
 378     GetConsoleTitle(szWindowTitle, ARRAYSIZE(szWindowTitle));
 379     bTitleSet = FALSE;
 380     _stprintf(szNewTitle, _T("%s - %s%s"), szWindowTitle, First, Rest);
 381     ConSetTitle(szNewTitle);
 382
 383     /* check if this is a .BAT or .CMD file */
 384     dot = _tcsrchr (szFullName, _T('.'));
 385     if (dot && (!_tcsicmp (dot, _T(".bat")) || !_tcsicmp (dot, _T(".cmd"))))
 386     {
 387         while (*rest == _T(' '))
 388             rest++;
 389         TRACE ("[BATCH: %s %s]\n", debugstr_aw(szFullName), debugstr_aw(rest));
 390         dwExitCode = Batch(szFullName, first, rest, Cmd);
 391     }
 392     else
 393     {
 394         /* exec the program */
 395         PROCESS_INFORMATION prci;
 396         STARTUPINFO stui;
 397
 398         /* build command line for CreateProcess(): FullName + " " + rest */
 399         BOOL quoted = !!_tcschr(First, ' ');
 400         _tcscpy(szFullCmdLine, quoted ? _T("\"") : _T(""));
 401         _tcsncat(szFullCmdLine, First, CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
 402         _tcsncat(szFullCmdLine, quoted ? _T("\"") : _T(""), CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
 403
 404         if (*rest)
 405         {
 406             _tcsncat(szFullCmdLine, _T(" "), CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
 407             _tcsncat(szFullCmdLine, rest, CMDLINE_LENGTH - _tcslen(szFullCmdLine) - 1);
 408         }
 409
 410         TRACE ("[EXEC: %s]\n", debugstr_aw(szFullCmdLine));
 411
 412         /* fill startup info */
 413         memset (&stui, 0, sizeof (STARTUPINFO));
 414         stui.cb = sizeof (STARTUPINFO);
 415         stui.dwFlags = STARTF_USESHOWWINDOW;
 416         stui.wShowWindow = SW_SHOWDEFAULT;
 417
 418         /* Set the console to standard mode */
 419         SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE),
 420                        ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
 421
 422         if (CreateProcess(szFullName,
 423                           szFullCmdLine,
 424                           NULL,
 425                           NULL,
 426                           TRUE,
 427                           0,   /* CREATE_NEW_PROCESS_GROUP */
 428                           NULL,
 429                           NULL,
 430                           &stui,
 431                           &prci))
 432         {
 433             CloseHandle(prci.hThread);
 434         }
 435         else
 436         {
 437             // See if we can run this with ShellExecute() ie myfile.xls
 438             prci.hProcess = RunFile(SEE_MASK_NOCLOSEPROCESS | SEE_MASK_NO_CONSOLE,
 439                                     szFullName,
 440                                     rest,
 441                                     NULL,
 442                                     SW_SHOWNORMAL);
 443         }
 444
 445         if (prci.hProcess != NULL)
 446         {
 447             if (bc != NULL || bWaitForCommand || IsConsoleProcess(prci.hProcess))
 448             {
 449                 /* when processing a batch file or starting console processes: execute synchronously */
 450                 EnterCriticalSection(&ChildProcessRunningLock);
 451                 dwChildProcessId = prci.dwProcessId;
 452
 453                 WaitForSingleObject(prci.hProcess, INFINITE);
 454
 455                 LeaveCriticalSection(&ChildProcessRunningLock);
 456
 457                 GetExitCodeProcess(prci.hProcess, &dwExitCode);
 458                 nErrorLevel = (INT)dwExitCode;
 459             }
 460             CloseHandle(prci.hProcess);
 461         }
 462         else
 463         {
 464             TRACE ("[ShellExecute failed!: %s]\n", debugstr_aw(Full));
 465             error_bad_command(first);
 466             dwExitCode = 1;
 467         }
 468
 469         /* Restore our default console mode */
 470         SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE),
 471                        ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
 472         SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE),
 473                        ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
 474     }
 475
 476     /* Get code page if it has been changed */
 477     InputCodePage= GetConsoleCP();
 478     OutputCodePage = GetConsoleOutputCP();
 479
 480     /* Restore the original console title */
 481     if (!bTitleSet)
 482         ConSetTitle(szWindowTitle);
 483
 484     return dwExitCode;
 485 }
 486
 487
 488 /*
 489  * look through the internal commands and determine whether or not this
 490  * command is one of them.  If it is, call the command.  If not, call
 491  * execute to run it as an external program.
 492  *
 493  * first - first word on command line
 494  * rest  - rest of command line
 495  */
 496 INT
 497 DoCommand(LPTSTR first, LPTSTR rest, PARSED_COMMAND *Cmd)
 498 {
 499     TCHAR *com;
 500     TCHAR *cp;
 501     LPTSTR param;   /* pointer to command's parameters */
 502     INT cl;
 503     LPCOMMAND cmdptr;
 504     BOOL nointernal = FALSE;
 505     INT ret;
 506
 507     TRACE ("DoCommand: (\'%s\' \'%s\')\n", debugstr_aw(first), debugstr_aw(rest));
 508
 509     /* full command line */
 510     com = cmd_alloc((_tcslen(first) + _tcslen(rest) + 2) * sizeof(TCHAR));
 511     if (com == NULL)
 512     {
 513         error_out_of_memory();
 514         return 1;
 515     }
 516
 517     /* If present in the first word, these characters end the name of an
 518      * internal command and become the beginning of its parameters. */
 519     cp = first + _tcscspn(first, _T("\t +,/;=[]"));
 520
 521     for (cl = 0; cl < (cp - first); cl++)
 522     {
 523         /* These characters do it too, but if one of them is present,
 524          * then we check to see if the word is a file name and skip
 525          * checking for internal commands if so.
 526          * This allows running programs with names like "echo.exe" */
 527         if (_tcschr(_T(".:\\"), first[cl]))
 528         {
 529             TCHAR tmp = *cp;
 530             *cp = _T('\0');
 531             nointernal = IsExistingFile(first);
 532             *cp = tmp;
 533             break;
 534         }
 535     }
 536
 537     /* Scan internal command table */
 538     for (cmdptr = cmds; !nointernal && cmdptr->name; cmdptr++)
 539     {
 540         if (!_tcsnicmp(first, cmdptr->name, cl) && cmdptr->name[cl] == _T('\0'))
 541         {
 542             _tcscpy(com, first);
 543             _tcscat(com, rest);
 544             param = &com[cl];
 545
 546             /* Skip over whitespace to rest of line, exclude 'echo' command */
 547             if (_tcsicmp(cmdptr->name, _T("echo")) != 0)
 548                 while (_istspace(*param))
 549                     param++;
 550             ret = cmdptr->func(param);
 551             cmd_free(com);
 552             return ret;
 553         }
 554     }
 555
 556     ret = Execute(com, first, rest, Cmd);
 557     cmd_free(com);
 558     return ret;
 559 }
 560
 561
 562 /*
 563  * process the command line and execute the appropriate functions
 564  * full input/output redirection and piping are supported
 565  */
 566 INT ParseCommandLine(LPTSTR cmd)
 567 {
 568     INT Ret = 0;
 569     PARSED_COMMAND *Cmd = ParseCommand(cmd);
 570     if (Cmd)
 571     {
 572         Ret = ExecuteCommand(Cmd);
 573         FreeCommand(Cmd);
 574     }
 575     return Ret;
 576 }
 577
 578 /* Execute a command without waiting for it to finish. If it's an internal
 579  * command or batch file, we must create a new cmd.exe process to handle it.
 580  * TODO: For now, this just always creates a cmd.exe process.
 581  *       This works, but is inefficient for running external programs,
 582  *       which could just be run directly. */
 583 static HANDLE
 584 ExecuteAsync(PARSED_COMMAND *Cmd)
 585 {
 586     TCHAR CmdPath[MAX_PATH];
 587     TCHAR CmdParams[CMDLINE_LENGTH], *ParamsEnd;
 588     STARTUPINFO stui;
 589     PROCESS_INFORMATION prci;
 590
 591     /* Get the path to cmd.exe */
 592     GetModuleFileName(NULL, CmdPath, ARRAYSIZE(CmdPath));
 593
 594     /* Build the parameter string to pass to cmd.exe */
 595     ParamsEnd = _stpcpy(CmdParams, _T("/S/D/C\""));
 596     ParamsEnd = Unparse(Cmd, ParamsEnd, &CmdParams[CMDLINE_LENGTH - 2]);
 597     if (!ParamsEnd)
 598     {
 599         error_out_of_memory();
 600         return NULL;
 601     }
 602     _tcscpy(ParamsEnd, _T("\""));
 603
 604     memset(&stui, 0, sizeof stui);
 605     stui.cb = sizeof(STARTUPINFO);
 606     if (!CreateProcess(CmdPath, CmdParams, NULL, NULL, TRUE, 0,
 607                        NULL, NULL, &stui, &prci))
 608     {
 609         ErrorMessage(GetLastError(), NULL);
 610         return NULL;
 611     }
 612
 613     CloseHandle(prci.hThread);
 614     return prci.hProcess;
 615 }
 616
 617 static VOID
 618 ExecutePipeline(PARSED_COMMAND *Cmd)
 619 {
 620 #ifdef FEATURE_REDIRECTION
 621     HANDLE hInput = NULL;
 622     HANDLE hOldConIn = GetStdHandle(STD_INPUT_HANDLE);
 623     HANDLE hOldConOut = GetStdHandle(STD_OUTPUT_HANDLE);
 624     HANDLE hProcess[MAXIMUM_WAIT_OBJECTS];
 625     INT nProcesses = 0;
 626     DWORD dwExitCode;
 627
 628     /* Do all but the last pipe command */
 629     do
 630     {
 631         HANDLE hPipeRead, hPipeWrite;
 632         if (nProcesses > (MAXIMUM_WAIT_OBJECTS - 2))
 633         {
 634             error_too_many_parameters(_T("|"));
 635             goto failed;
 636         }
 637
 638         /* Create the pipe that this process will write into.
 639          * Make the handles non-inheritable initially, because this
 640          * process shouldn't inherit the reading handle. */
 641         if (!CreatePipe(&hPipeRead, &hPipeWrite, NULL, 0))
 642         {
 643             error_no_pipe();
 644             goto failed;
 645         }
 646
 647         /* The writing side of the pipe is STDOUT for this process */
 648         SetHandleInformation(hPipeWrite, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
 649         SetStdHandle(STD_OUTPUT_HANDLE, hPipeWrite);
 650
 651         /* Execute it (error check is done later for easier cleanup) */
 652         hProcess[nProcesses] = ExecuteAsync(Cmd->Subcommands);
 653         CloseHandle(hPipeWrite);
 654         if (hInput)
 655             CloseHandle(hInput);
 656
 657         /* The reading side of the pipe will be STDIN for the next process */
 658         SetHandleInformation(hPipeRead, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
 659         SetStdHandle(STD_INPUT_HANDLE, hPipeRead);
 660         hInput = hPipeRead;
 661
 662         if (!hProcess[nProcesses])
 663             goto failed;
 664         nProcesses++;
 665
 666         Cmd = Cmd->Subcommands->Next;
 667     } while (Cmd->Type == C_PIPE);
 668
 669     /* The last process uses the original STDOUT */
 670     SetStdHandle(STD_OUTPUT_HANDLE, hOldConOut);
 671     hProcess[nProcesses] = ExecuteAsync(Cmd);
 672     if (!hProcess[nProcesses])
 673         goto failed;
 674     nProcesses++;
 675     CloseHandle(hInput);
 676     SetStdHandle(STD_INPUT_HANDLE, hOldConIn);
 677
 678     /* Wait for all processes to complete */
 679     EnterCriticalSection(&ChildProcessRunningLock);
 680     WaitForMultipleObjects(nProcesses, hProcess, TRUE, INFINITE);
 681     LeaveCriticalSection(&ChildProcessRunningLock);
 682
 683     /* Use the exit code of the last process in the pipeline */
 684     GetExitCodeProcess(hProcess[nProcesses - 1], &dwExitCode);
 685     nErrorLevel = (INT)dwExitCode;
 686
 687     while (--nProcesses >= 0)
 688         CloseHandle(hProcess[nProcesses]);
 689     return;
 690
 691 failed:
 692     if (hInput)
 693         CloseHandle(hInput);
 694     while (--nProcesses >= 0)
 695     {
 696         TerminateProcess(hProcess[nProcesses], 0);
 697         CloseHandle(hProcess[nProcesses]);
 698     }
 699     SetStdHandle(STD_INPUT_HANDLE, hOldConIn);
 700     SetStdHandle(STD_OUTPUT_HANDLE, hOldConOut);
 701 #endif
 702 }
 703
 704 INT
 705 ExecuteCommand(PARSED_COMMAND *Cmd)
 706 {
 707     PARSED_COMMAND *Sub;
 708     LPTSTR First, Rest;
 709     INT Ret = 0;
 710
 711     if (!PerformRedirection(Cmd->Redirections))
 712         return 1;
 713
 714     switch (Cmd->Type)
 715     {
 716     case C_COMMAND:
 717         Ret = 1;
 718         First = DoDelayedExpansion(Cmd->Command.First);
 719         if (First)
 720         {
 721             Rest = DoDelayedExpansion(Cmd->Command.Rest);
 722             if (Rest)
 723             {
 724                 Ret = DoCommand(First, Rest, Cmd);
 725                 cmd_free(Rest);
 726             }
 727             cmd_free(First);
 728         }
 729         break;
 730     case C_QUIET:
 731     case C_BLOCK:
 732     case C_MULTI:
 733         for (Sub = Cmd->Subcommands; Sub; Sub = Sub->Next)
 734             Ret = ExecuteCommand(Sub);
 735         break;
 736     case C_IFFAILURE:
 737         Sub = Cmd->Subcommands;
 738         Ret = ExecuteCommand(Sub);
 739         if (Ret != 0)
 740         {
 741             nErrorLevel = Ret;
 742             Ret = ExecuteCommand(Sub->Next);
 743         }
 744         break;
 745     case C_IFSUCCESS:
 746         Sub = Cmd->Subcommands;
 747         Ret = ExecuteCommand(Sub);
 748         if (Ret == 0)
 749             Ret = ExecuteCommand(Sub->Next);
 750         break;
 751     case C_PIPE:
 752         ExecutePipeline(Cmd);
 753         break;
 754     case C_IF:
 755         Ret = ExecuteIf(Cmd);
 756         break;
 757     case C_FOR:
 758         Ret = ExecuteFor(Cmd);
 759         break;
 760     }
 761
 762     UndoRedirection(Cmd->Redirections, NULL);
 763     return Ret;
 764 }
 765
 766 LPTSTR
 767 GetEnvVar(LPCTSTR varName)
 768 {
 769     static LPTSTR ret = NULL;
 770     UINT size;
 771
 772     cmd_free(ret);
 773     ret = NULL;
 774     size = GetEnvironmentVariable(varName, NULL, 0);
 775     if (size > 0)
 776     {
 777         ret = cmd_alloc(size * sizeof(TCHAR));
 778         if (ret != NULL)
 779             GetEnvironmentVariable(varName, ret, size + 1);
 780     }
 781     return ret;
 782 }
 783
 784 LPCTSTR
 785 GetEnvVarOrSpecial(LPCTSTR varName)
 786 {
 787     static TCHAR ret[MAX_PATH];
 788
 789     LPTSTR var = GetEnvVar(varName);
 790     if (var)
 791         return var;
 792
 793     /* env var doesn't exist, look for a "special" one */
 794     /* %CD% */
 795     if (_tcsicmp(varName,_T("cd")) ==0)
 796     {
 797         GetCurrentDirectory(MAX_PATH, ret);
 798         return ret;
 799     }
 800     /* %TIME% */
 801     else if (_tcsicmp(varName,_T("time")) ==0)
 802     {
 803         return GetTimeString();
 804     }
 805     /* %DATE% */
 806     else if (_tcsicmp(varName,_T("date")) ==0)
 807     {
 808         return GetDateString();
 809     }
 810
 811     /* %RANDOM% */
 812     else if (_tcsicmp(varName,_T("random")) ==0)
 813     {
 814         /* Get random number */
 815         _itot(rand(),ret,10);
 816         return ret;
 817     }
 818
 819     /* %CMDCMDLINE% */
 820     else if (_tcsicmp(varName,_T("cmdcmdline")) ==0)
 821     {
 822         return GetCommandLine();
 823     }
 824
 825     /* %CMDEXTVERSION% */
 826     else if (_tcsicmp(varName,_T("cmdextversion")) ==0)
 827     {
 828         /* Set version number to 2 */
 829         _itot(2,ret,10);
 830         return ret;
 831     }
 832
 833     /* %ERRORLEVEL% */
 834     else if (_tcsicmp(varName,_T("errorlevel")) ==0)
 835     {
 836         _itot(nErrorLevel,ret,10);
 837         return ret;
 838     }
 839
 840     return NULL;
 841 }
 842
 843 /* Handle the %~var syntax */
 844 static LPTSTR
 845 GetEnhancedVar(TCHAR **pFormat, LPTSTR (*GetVar)(TCHAR, BOOL *))
 846 {
 847     static const TCHAR ModifierTable[] = _T("dpnxfsatz");
 848     enum {
 849         M_DRIVE = 1,   /* D: drive letter */
 850         M_PATH  = 2,   /* P: path */
 851         M_NAME  = 4,   /* N: filename */
 852         M_EXT   = 8,   /* X: extension */
 853         M_FULL  = 16,  /* F: full path (drive+path+name+ext) */
 854         M_SHORT = 32,  /* S: full path (drive+path+name+ext), use short names */
 855         M_ATTR  = 64,  /* A: attributes */
 856         M_TIME  = 128, /* T: modification time */
 857         M_SIZE  = 256, /* Z: file size */
 858     } Modifiers = 0;
 859
 860     TCHAR *Format, *FormatEnd;
 861     TCHAR *PathVarName = NULL;
 862     LPTSTR Variable;
 863     TCHAR *VarEnd;
 864     BOOL VariableIsParam0;
 865     TCHAR FullPath[MAX_PATH];
 866     TCHAR FixedPath[MAX_PATH], *Filename, *Extension;
 867     HANDLE hFind;
 868     WIN32_FIND_DATA w32fd;
 869     TCHAR *In, *Out;
 870
 871     static TCHAR Result[CMDLINE_LENGTH];
 872
 873     /* There is ambiguity between modifier characters and FOR variables;
 874      * the rule that cmd uses is to pick the longest possible match.
 875      * For example, if there is a %n variable, then out of %~anxnd,
 876      * %~anxn will be substituted rather than just %~an. */
 877
 878     /* First, go through as many modifier characters as possible */
 879     FormatEnd = Format = *pFormat;
 880     while (*FormatEnd && _tcschr(ModifierTable, _totlower(*FormatEnd)))
 881         FormatEnd++;
 882
 883     if (*FormatEnd == _T('$'))
 884     {
 885         /* $PATH: syntax */
 886         PathVarName = FormatEnd + 1;
 887         FormatEnd = _tcschr(PathVarName, _T(':'));
 888         if (!FormatEnd)
 889             return NULL;
 890
 891         /* Must be immediately followed by the variable */
 892         Variable = GetVar(*++FormatEnd, &VariableIsParam0);
 893         if (!Variable)
 894             return NULL;
 895     }
 896     else
 897     {
 898         /* Backtrack if necessary to get a variable name match */
 899         while (!(Variable = GetVar(*FormatEnd, &VariableIsParam0)))
 900         {
 901             if (FormatEnd == Format)
 902                 return NULL;
 903             FormatEnd--;
 904         }
 905     }
 906
 907     for (; Format < FormatEnd && *Format != _T('$'); Format++)
 908         Modifiers |= 1 << (_tcschr(ModifierTable, _totlower(*Format)) - ModifierTable);
 909
 910     *pFormat = FormatEnd + 1;
 911
 912     /* Exclude the leading and trailing quotes */
 913     VarEnd = &Variable[_tcslen(Variable)];
 914     if (*Variable == _T('"'))
 915     {
 916         Variable++;
 917         if (VarEnd > Variable && VarEnd[-1] == _T('"'))
 918             VarEnd--;
 919     }
 920
 921     if ((char *)VarEnd - (char *)Variable >= sizeof Result)
 922         return _T("");
 923     memcpy(Result, Variable, (char *)VarEnd - (char *)Variable);
 924     Result[VarEnd - Variable] = _T('\0');
 925
 926     if (PathVarName)
 927     {
 928         /* $PATH: syntax - search the directories listed in the
 929          * specified environment variable for the file */
 930         LPTSTR PathVar;
 931         FormatEnd[-1] = _T('\0');
 932         PathVar = GetEnvVar(PathVarName);
 933         FormatEnd[-1] = _T(':');
 934         if (!PathVar ||
 935             !SearchPath(PathVar, Result, NULL, MAX_PATH, FullPath, NULL))
 936         {
 937             return _T("");
 938         }
 939     }
 940     else if (Modifiers == 0)
 941     {
 942         /* For plain %~var with no modifiers, just return the variable without quotes */
 943         return Result;
 944     }
 945     else if (VariableIsParam0)
 946     {
 947         /* Special case: If the variable is %0 and modifier characters are present,
 948          * use the batch file's path (which includes the .bat/.cmd extension)
 949          * rather than the actual %0 variable (which might not). */
 950         _tcscpy(FullPath, bc->BatchFilePath);
 951     }
 952     else
 953     {
 954         /* Convert the variable, now without quotes, to a full path */
 955         if (!GetFullPathName(Result, MAX_PATH, FullPath, NULL))
 956             return _T("");
 957     }
 958
 959     /* Next step is to change the path to fix letter case (e.g.
 960      * C:\ReAcToS -> C:\ReactOS) and, if requested with the S modifier,
 961      * replace long filenames with short. */
 962
 963     In = FullPath;
 964     Out = FixedPath;
 965
 966     /* Copy drive letter */
 967     *Out++ = *In++;
 968     *Out++ = *In++;
 969     *Out++ = *In++;
 970     /* Loop over each \-separated component in the path */
 971     do {
 972         TCHAR *Next = _tcschr(In, _T('\\'));
 973         if (Next)
 974             *Next++ = _T('\0');
 975         /* Use FindFirstFile to get the correct name */
 976         if (Out + _tcslen(In) + 1 >= &FixedPath[MAX_PATH])
 977             return _T("");
 978         _tcscpy(Out, In);
 979         hFind = FindFirstFile(FixedPath, &w32fd);
 980         /* If it doesn't exist, just leave the name as it was given */
 981         if (hFind != INVALID_HANDLE_VALUE)
 982         {
 983             LPTSTR FixedComponent = w32fd.cFileName;
 984             if (*w32fd.cAlternateFileName &&
 985                 ((Modifiers & M_SHORT) || !_tcsicmp(In, w32fd.cAlternateFileName)))
 986             {
 987                 FixedComponent = w32fd.cAlternateFileName;
 988             }
 989             FindClose(hFind);
 990
 991             if (Out + _tcslen(FixedComponent) + 1 >= &FixedPath[MAX_PATH])
 992                 return _T("");
 993             _tcscpy(Out, FixedComponent);
 994         }
 995         Filename = Out;
 996         Out += _tcslen(Out);
 997         *Out++ = _T('\\');
 998
 999         In = Next;
1000     } while (In != NULL);
1001     Out[-1] = _T('\0');
1002
1003     /* Build the result string. Start with attributes, modification time, and
1004      * file size. If the file didn't exist, these fields will all be empty. */
1005     Out = Result;
1006     if (hFind != INVALID_HANDLE_VALUE)
1007     {
1008         if (Modifiers & M_ATTR)
1009         {
1010             static const struct {
1011                 TCHAR Character;
1012                 WORD  Value;
1013             } *Attrib, Table[] = {
1014                 { _T('d'), FILE_ATTRIBUTE_DIRECTORY },
1015                 { _T('r'), FILE_ATTRIBUTE_READONLY },
1016                 { _T('a'), FILE_ATTRIBUTE_ARCHIVE },
1017                 { _T('h'), FILE_ATTRIBUTE_HIDDEN },
1018                 { _T('s'), FILE_ATTRIBUTE_SYSTEM },
1019                 { _T('c'), FILE_ATTRIBUTE_COMPRESSED },
1020                 { _T('o'), FILE_ATTRIBUTE_OFFLINE },
1021                 { _T('t'), FILE_ATTRIBUTE_TEMPORARY },
1022                 { _T('l'), FILE_ATTRIBUTE_REPARSE_POINT },
1023             };
1024             for (Attrib = Table; Attrib != &Table[9]; Attrib++)
1025             {
1026                 *Out++ = w32fd.dwFileAttributes & Attrib->Value
1027                          ? Attrib->Character
1028                          : _T('-');
1029             }
1030             *Out++ = _T(' ');
1031         }
1032         if (Modifiers & M_TIME)
1033         {
1034             FILETIME ft;
1035             SYSTEMTIME st;
1036             FileTimeToLocalFileTime(&w32fd.ftLastWriteTime, &ft);
1037             FileTimeToSystemTime(&ft, &st);
1038
1039             Out += FormatDate(Out, &st, TRUE);
1040             *Out++ = _T(' ');
1041             Out += FormatTime(Out, &st);
1042             *Out++ = _T(' ');
1043         }
1044         if (Modifiers & M_SIZE)
1045         {
1046             ULARGE_INTEGER Size;
1047             Size.LowPart = w32fd.nFileSizeLow;
1048             Size.HighPart = w32fd.nFileSizeHigh;
1049             Out += _stprintf(Out, _T("%I64u "), Size.QuadPart);
1050         }
1051     }
1052
1053     /* When using the path-searching syntax or the S modifier,
1054      * at least part of the file path is always included.
1055      * If none of the DPNX modifiers are present, include the full path */
1056     if (PathVarName || (Modifiers & M_SHORT))
1057         if ((Modifiers & (M_DRIVE | M_PATH | M_NAME | M_EXT)) == 0)
1058             Modifiers |= M_FULL;
1059
1060     /* Now add the requested parts of the name.
1061      * With the F modifier, add all parts to form the full path. */
1062     Extension = _tcsrchr(Filename, _T('.'));
1063     if (Modifiers & (M_DRIVE | M_FULL))
1064     {
1065         *Out++ = FixedPath[0];
1066         *Out++ = FixedPath[1];
1067     }
1068     if (Modifiers & (M_PATH | M_FULL))
1069     {
1070         memcpy(Out, &FixedPath[2], (char *)Filename - (char *)&FixedPath[2]);
1071         Out += Filename - &FixedPath[2];
1072     }
1073     if (Modifiers & (M_NAME | M_FULL))
1074     {
1075         while (*Filename && Filename != Extension)
1076             *Out++ = *Filename++;
1077     }
1078     if (Modifiers & (M_EXT | M_FULL))
1079     {
1080         if (Extension)
1081             Out = _stpcpy(Out, Extension);
1082     }
1083
1084     /* Trim trailing space which otherwise would appear as a
1085      * result of using the A/T/Z modifiers but no others. */
1086     while (Out != &Result[0] && Out[-1] == _T(' '))
1087         Out--;
1088     *Out = _T('\0');
1089
1090     return Result;
1091 }
1092
1093 LPCTSTR
1094 GetBatchVar(TCHAR *varName, UINT *varNameLen)
1095 {
1096     LPCTSTR ret;
1097     TCHAR *varNameEnd;
1098     BOOL dummy;
1099
1100     *varNameLen = 1;
1101
1102     switch ( *varName )
1103     {
1104     case _T('~'):
1105         varNameEnd = varName + 1;
1106         ret = GetEnhancedVar(&varNameEnd, FindArg);
1107         if (!ret)
1108         {
1109             error_syntax(varName);
1110             return NULL;
1111         }
1112         *varNameLen = varNameEnd - varName;
1113         return ret;
1114     case _T('0'):
1115     case _T('1'):
1116     case _T('2'):
1117     case _T('3'):
1118     case _T('4'):
1119     case _T('5'):
1120     case _T('6'):
1121     case _T('7'):
1122     case _T('8'):
1123     case _T('9'):
1124         return FindArg(*varName, &dummy);
1125
1126     case _T('*'):
1127         //
1128         // Copy over the raw params(not including the batch file name
1129         //
1130         return bc->raw_params;
1131
1132     case _T('%'):
1133         return _T("%");
1134     }
1135     return NULL;
1136 }
1137
1138 BOOL
1139 SubstituteVars(TCHAR *Src, TCHAR *Dest, TCHAR Delim)
1140 {
1141 #define APPEND(From, Length) { \
1142     if (Dest + (Length) > DestEnd) \
1143         goto too_long; \
1144     memcpy(Dest, From, (Length) * sizeof(TCHAR)); \
1145     Dest += Length; }
1146 #define APPEND1(Char) { \
1147     if (Dest >= DestEnd) \
1148         goto too_long; \
1149     *Dest++ = Char; }
1150
1151     TCHAR *DestEnd = Dest + CMDLINE_LENGTH - 1;
1152     const TCHAR *Var;
1153     int VarLength;
1154     TCHAR *SubstStart;
1155     TCHAR EndChr;
1156     while (*Src)
1157     {
1158         if (*Src != Delim)
1159         {
1160             APPEND1(*Src++)
1161             continue;
1162         }
1163
1164         Src++;
1165         if (bc && Delim == _T('%'))
1166         {
1167             UINT NameLen;
1168             Var = GetBatchVar(Src, &NameLen);
1169             if (Var != NULL)
1170             {
1171                 VarLength = _tcslen(Var);
1172                 APPEND(Var, VarLength)
1173                 Src += NameLen;
1174                 continue;
1175             }
1176         }
1177
1178         /* Find the end of the variable name. A colon (:) will usually
1179          * end the name and begin the optional modifier, but not if it
1180          * is immediately followed by the delimiter (%VAR:%). */
1181         SubstStart = Src;
1182         while (*Src != Delim && !(*Src == _T(':') && Src[1] != Delim))
1183         {
1184             if (!*Src)
1185                 goto bad_subst;
1186             Src++;
1187         }
1188
1189         EndChr = *Src;
1190         *Src = _T('\0');
1191         Var = GetEnvVarOrSpecial(SubstStart);
1192         *Src++ = EndChr;
1193         if (Var == NULL)
1194         {
1195             /* In a batch file, %NONEXISTENT% "expands" to an empty string */
1196             if (bc)
1197                 continue;
1198             goto bad_subst;
1199         }
1200         VarLength = _tcslen(Var);
1201
1202         if (EndChr == Delim)
1203         {
1204             /* %VAR% - use as-is */
1205             APPEND(Var, VarLength)
1206         }
1207         else if (*Src == _T('~'))
1208         {
1209             /* %VAR:~[start][,length]% - substring
1210              * Negative values are offsets from the end */
1211             int Start = _tcstol(Src + 1, &Src, 0);
1212             int End = VarLength;
1213             if (Start < 0)
1214                 Start += VarLength;
1215             Start = max(Start, 0);
1216             Start = min(Start, VarLength);
1217             if (*Src == _T(','))
1218             {
1219                 End = _tcstol(Src + 1, &Src, 0);
1220                 End += (End < 0) ? VarLength : Start;
1221                 End = max(End, Start);
1222                 End = min(End, VarLength);
1223             }
1224             if (*Src++ != Delim)
1225                 goto bad_subst;
1226             APPEND(&Var[Start], End - Start);
1227         }
1228         else
1229         {
1230             /* %VAR:old=new% - replace all occurrences of old with new
1231              * %VAR:*old=new% - replace first occurrence only,
1232              *                  and remove everything before it */
1233             TCHAR *Old, *New;
1234             DWORD OldLength, NewLength;
1235             BOOL Star = FALSE;
1236             int LastMatch = 0, i = 0;
1237
1238             if (*Src == _T('*'))
1239             {
1240                 Star = TRUE;
1241                 Src++;
1242             }
1243
1244             /* the string to replace may contain the delimiter */
1245             Src = _tcschr(Old = Src, _T('='));
1246             if (Src == NULL)
1247                 goto bad_subst;
1248             OldLength = Src++ - Old;
1249             if (OldLength == 0)
1250                 goto bad_subst;
1251
1252             Src = _tcschr(New = Src, Delim);
1253             if (Src == NULL)
1254                 goto bad_subst;
1255             NewLength = Src++ - New;
1256
1257             while (i < VarLength)
1258             {
1259                 if (_tcsnicmp(&Var[i], Old, OldLength) == 0)
1260                 {
1261                     if (!Star)
1262                         APPEND(&Var[LastMatch], i - LastMatch)
1263                     APPEND(New, NewLength)
1264                     i += OldLength;
1265                     LastMatch = i;
1266                     if (Star)
1267                         break;
1268                     continue;
1269                 }
1270                 i++;
1271             }
1272             APPEND(&Var[LastMatch], VarLength - LastMatch)
1273         }
1274         continue;
1275
1276     bad_subst:
1277         Src = SubstStart;
1278         if (!bc)
1279             APPEND1(Delim)
1280     }
1281     *Dest = _T('\0');
1282     return TRUE;
1283 too_long:
1284     ConOutResPrintf(STRING_ALIAS_ERROR);
1285     nErrorLevel = 9023;
1286     return FALSE;
1287 #undef APPEND
1288 #undef APPEND1
1289 }
1290
1291 /* Search the list of FOR contexts for a variable */
1292 static LPTSTR FindForVar(TCHAR Var, BOOL *IsParam0)
1293 {
1294     FOR_CONTEXT *Ctx;
1295     *IsParam0 = FALSE;
1296     for (Ctx = fc; Ctx != NULL; Ctx = Ctx->prev)
1297     {
1298         if ((UINT)(Var - Ctx->firstvar) < Ctx->varcount)
1299             return Ctx->values[Var - Ctx->firstvar];
1300     }
1301     return NULL;
1302 }
1303
1304 BOOL
1305 SubstituteForVars(TCHAR *Src, TCHAR *Dest)
1306 {
1307     TCHAR *DestEnd = &Dest[CMDLINE_LENGTH - 1];
1308     while (*Src)
1309     {
1310         if (Src[0] == _T('%'))
1311         {
1312             BOOL Dummy;
1313             LPTSTR End = &Src[2];
1314             LPTSTR Value = NULL;
1315
1316             if (Src[1] == _T('~'))
1317                 Value = GetEnhancedVar(&End, FindForVar);
1318
1319             if (!Value)
1320                 Value = FindForVar(Src[1], &Dummy);
1321
1322             if (Value)
1323             {
1324                 if (Dest + _tcslen(Value) > DestEnd)
1325                     return FALSE;
1326                 Dest = _stpcpy(Dest, Value);
1327                 Src = End;
1328                 continue;
1329             }
1330         }
1331         /* Not a variable; just copy the character */
1332         if (Dest >= DestEnd)
1333             return FALSE;
1334         *Dest++ = *Src++;
1335     }
1336     *Dest = _T('\0');
1337     return TRUE;
1338 }
1339
1340 LPTSTR
1341 DoDelayedExpansion(LPTSTR Line)
1342 {
1343     TCHAR Buf1[CMDLINE_LENGTH];
1344     TCHAR Buf2[CMDLINE_LENGTH];
1345
1346     /* First, substitute FOR variables */
1347     if (!SubstituteForVars(Line, Buf1))
1348         return NULL;
1349
1350     if (!bDelayedExpansion || !_tcschr(Buf1, _T('!')))
1351         return cmd_dup(Buf1);
1352
1353     /* FIXME: Delayed substitutions actually aren't quite the same as
1354      * immediate substitutions. In particular, it's possible to escape
1355      * the exclamation point using ^. */
1356     if (!SubstituteVars(Buf1, Buf2, _T('!')))
1357         return NULL;
1358     return cmd_dup(Buf2);
1359 }
1360
1361
1362 /*
1363  * do the prompt/input/process loop
1364  *
1365  */
1366
1367 BOOL
1368 ReadLine(TCHAR *commandline, BOOL bMore)
1369 {
1370     TCHAR readline[CMDLINE_LENGTH];
1371     LPTSTR ip;
1372
1373     /* if no batch input then... */
1374     if (bc == NULL)
1375     {
1376         if (bMore)
1377         {
1378             ConOutResPrintf(STRING_MORE);
1379         }
1380         else
1381         {
1382             /* JPP 19980807 - if echo off, don't print prompt */
1383             if (bEcho)
1384             {
1385                 if (!bIgnoreEcho)
1386                     ConOutChar(_T('\n'));
1387                 PrintPrompt();
1388             }
1389         }
1390
1391         if (!ReadCommand(readline, CMDLINE_LENGTH - 1))
1392         {
1393             bExit = TRUE;
1394             return FALSE;
1395         }
1396
1397         if (CheckCtrlBreak(BREAK_INPUT))
1398         {
1399             ConOutChar(_T('\n'));
1400             return FALSE;
1401         }
1402         ip = readline;
1403     }
1404     else
1405     {
1406         ip = ReadBatchLine();
1407         if (!ip)
1408             return FALSE;
1409     }
1410
1411     return SubstituteVars(ip, commandline, _T('%'));
1412 }
1413
1414 static VOID
1415 ProcessInput(VOID)
1416 {
1417     PARSED_COMMAND *Cmd;
1418
1419     while (!bCanExit || !bExit)
1420     {
1421         Cmd = ParseCommand(NULL);
1422         if (!Cmd)
1423             continue;
1424
1425         ExecuteCommand(Cmd);
1426         FreeCommand(Cmd);
1427     }
1428 }
1429
1430
1431 /*
1432  * control-break handler.
1433  */
1434 BOOL WINAPI BreakHandler(DWORD dwCtrlType)
1435 {
1436     DWORD           dwWritten;
1437     INPUT_RECORD    rec;
1438     static BOOL SelfGenerated = FALSE;
1439
1440     if ((dwCtrlType != CTRL_C_EVENT) &&
1441         (dwCtrlType != CTRL_BREAK_EVENT))
1442     {
1443         return FALSE;
1444     }
1445     else
1446     {
1447         if (SelfGenerated)
1448         {
1449             SelfGenerated = FALSE;
1450             return TRUE;
1451         }
1452     }
1453
1454     if (!TryEnterCriticalSection(&ChildProcessRunningLock))
1455     {
1456         SelfGenerated = TRUE;
1457         GenerateConsoleCtrlEvent (dwCtrlType, 0);
1458         return TRUE;
1459     }
1460     else
1461     {
1462         LeaveCriticalSection(&ChildProcessRunningLock);
1463     }
1464
1465     rec.EventType = KEY_EVENT;
1466     rec.Event.KeyEvent.bKeyDown = TRUE;
1467     rec.Event.KeyEvent.wRepeatCount = 1;
1468     rec.Event.KeyEvent.wVirtualKeyCode = _T('C');
1469     rec.Event.KeyEvent.wVirtualScanCode = _T('C') - 35;
1470     rec.Event.KeyEvent.uChar.AsciiChar = _T('C');
1471     rec.Event.KeyEvent.uChar.UnicodeChar = _T('C');
1472     rec.Event.KeyEvent.dwControlKeyState = RIGHT_CTRL_PRESSED;
1473
1474     WriteConsoleInput(hIn,
1475                       &rec,
1476                       1,
1477                       &dwWritten);
1478
1479     bCtrlBreak = TRUE;
1480     /* FIXME: Handle batch files */
1481
1482     //ConOutPrintf(_T("^C"));
1483
1484     return TRUE;
1485 }
1486
1487
1488 VOID AddBreakHandler(VOID)
1489 {
1490     SetConsoleCtrlHandler(BreakHandler, TRUE);
1491 }
1492
1493
1494 VOID RemoveBreakHandler(VOID)
1495 {
1496     SetConsoleCtrlHandler(BreakHandler, FALSE);
1497 }
1498
1499
1500 /*
1501  * show commands and options that are available.
1502  *
1503  */
1504 #if 0
1505 static VOID
1506 ShowCommands(VOID)
1507 {
1508     /* print command list */
1509     ConOutResPuts(STRING_CMD_HELP1);
1510     PrintCommandList();
1511
1512     /* print feature list */
1513     ConOutResPuts(STRING_CMD_HELP2);
1514
1515 #ifdef FEATURE_ALIASES
1516     ConOutResPuts(STRING_CMD_HELP3);
1517 #endif
1518 #ifdef FEATURE_HISTORY
1519     ConOutResPuts(STRING_CMD_HELP4);
1520 #endif
1521 #ifdef FEATURE_UNIX_FILENAME_COMPLETION
1522     ConOutResPuts(STRING_CMD_HELP5);
1523 #endif
1524 #ifdef FEATURE_DIRECTORY_STACK
1525     ConOutResPuts(STRING_CMD_HELP6);
1526 #endif
1527 #ifdef FEATURE_REDIRECTION
1528     ConOutResPuts(STRING_CMD_HELP7);
1529 #endif
1530     ConOutChar(_T('\n'));
1531 }
1532 #endif
1533
1534
1535 static VOID
1536 LoadRegistrySettings(HKEY hKeyRoot)
1537 {
1538     LONG lRet;
1539     HKEY hKey;
1540     /*
1541      * Buffer big enough to hold the string L"4294967295",
1542      * corresponding to the literal 0xFFFFFFFF (MAX_ULONG) in decimal.
1543      */
1544     DWORD Buffer[6];
1545     DWORD dwType, len;
1546
1547     lRet = RegOpenKeyEx(hKeyRoot,
1548                         _T("Software\\Microsoft\\Command Processor"),
1549                         0,
1550                         KEY_QUERY_VALUE,
1551                         &hKey);
1552     if (lRet != ERROR_SUCCESS)
1553         return;
1554
1555 #ifdef INCLUDE_CMD_COLOR
1556     len = sizeof(Buffer);
1557     lRet = RegQueryValueEx(hKey,
1558                            _T("DefaultColor"),
1559                            NULL,
1560                            &dwType,
1561                            (LPBYTE)&Buffer,
1562                            &len);
1563     if (lRet == ERROR_SUCCESS)
1564     {
1565         /* Overwrite the default attributes */
1566         if (dwType == REG_DWORD)
1567             wDefColor = (WORD)*(PDWORD)Buffer;
1568         else if (dwType == REG_SZ)
1569             wDefColor = (WORD)_tcstol((PTSTR)Buffer, NULL, 0);
1570     }
1571     // else, use the default attributes retrieved before.
1572 #endif
1573
1574 #if 0
1575     len = sizeof(Buffer);
1576     lRet = RegQueryValueEx(hKey,
1577                            _T("DisableUNCCheck"),
1578                            NULL,
1579                            &dwType,
1580                            (LPBYTE)&Buffer,
1581                            &len);
1582     if (lRet == ERROR_SUCCESS)
1583     {
1584         /* Overwrite the default setting */
1585         if (dwType == REG_DWORD)
1586             bDisableUNCCheck = !!*(PDWORD)Buffer;
1587         else if (dwType == REG_SZ)
1588             bDisableUNCCheck = (_ttol((PTSTR)Buffer) == 1);
1589     }
1590     // else, use the default setting set globally.
1591 #endif
1592
1593     len = sizeof(Buffer);
1594     lRet = RegQueryValueEx(hKey,
1595                            _T("DelayedExpansion"),
1596                            NULL,
1597                            &dwType,
1598                            (LPBYTE)&Buffer,
1599                            &len);
1600     if (lRet == ERROR_SUCCESS)
1601     {
1602         /* Overwrite the default setting */
1603         if (dwType == REG_DWORD)
1604             bDelayedExpansion = !!*(PDWORD)Buffer;
1605         else if (dwType == REG_SZ)
1606             bDelayedExpansion = (_ttol((PTSTR)Buffer) == 1);
1607     }
1608     // else, use the default setting set globally.
1609
1610     len = sizeof(Buffer);
1611     lRet = RegQueryValueEx(hKey,
1612                            _T("EnableExtensions"),
1613                            NULL,
1614                            &dwType,
1615                            (LPBYTE)&Buffer,
1616                            &len);
1617     if (lRet == ERROR_SUCCESS)
1618     {
1619         /* Overwrite the default setting */
1620         if (dwType == REG_DWORD)
1621             bEnableExtensions = !!*(PDWORD)Buffer;
1622         else if (dwType == REG_SZ)
1623             bEnableExtensions = (_ttol((PTSTR)Buffer) == 1);
1624     }
1625     // else, use the default setting set globally.
1626
1627     len = sizeof(Buffer);
1628     lRet = RegQueryValueEx(hKey,
1629                            _T("CompletionChar"),
1630                            NULL,
1631                            &dwType,
1632                            (LPBYTE)&Buffer,
1633                            &len);
1634     if (lRet == ERROR_SUCCESS)
1635     {
1636         /* Overwrite the default setting */
1637         if (dwType == REG_DWORD)
1638             AutoCompletionChar = (TCHAR)*(PDWORD)Buffer;
1639         else if (dwType == REG_SZ)
1640             AutoCompletionChar = (TCHAR)_tcstol((PTSTR)Buffer, NULL, 0);
1641     }
1642     // else, use the default setting set globally.
1643
1644     /* Validity check */
1645     if (IS_COMPLETION_DISABLED(AutoCompletionChar))
1646     {
1647         /* Disable autocompletion */
1648         AutoCompletionChar = 0x20;
1649     }
1650
1651     len = sizeof(Buffer);
1652     lRet = RegQueryValueEx(hKey,
1653                            _T("PathCompletionChar"),
1654                            NULL,
1655                            &dwType,
1656                            (LPBYTE)&Buffer,
1657                            &len);
1658     if (lRet == ERROR_SUCCESS)
1659     {
1660         /* Overwrite the default setting */
1661         if (dwType == REG_DWORD)
1662             PathCompletionChar = (TCHAR)*(PDWORD)Buffer;
1663         else if (dwType == REG_SZ)
1664             PathCompletionChar = (TCHAR)_tcstol((PTSTR)Buffer, NULL, 0);
1665     }
1666     // else, use the default setting set globally.
1667
1668     /* Validity check */
1669     if (IS_COMPLETION_DISABLED(PathCompletionChar))
1670     {
1671         /* Disable autocompletion */
1672         PathCompletionChar = 0x20;
1673     }
1674
1675     /* Adjust completion chars */
1676     if (PathCompletionChar >= 0x20 && AutoCompletionChar < 0x20)
1677         PathCompletionChar = AutoCompletionChar;
1678     else if (AutoCompletionChar >= 0x20 && PathCompletionChar < 0x20)
1679         AutoCompletionChar = PathCompletionChar;
1680
1681     RegCloseKey(hKey);
1682 }
1683
1684 static VOID
1685 ExecuteAutoRunFile(HKEY hKeyRoot)
1686 {
1687     TCHAR autorun[2048];
1688     DWORD len = sizeof autorun;
1689     HKEY hkey;
1690
1691     if (RegOpenKeyEx(hKeyRoot,
1692                      _T("SOFTWARE\\Microsoft\\Command Processor"),
1693                      0,
1694                      KEY_READ,
1695                      &hkey) == ERROR_SUCCESS)
1696     {
1697         if (RegQueryValueEx(hkey,
1698                            _T("AutoRun"),
1699                            0,
1700                            0,
1701                            (LPBYTE)autorun,
1702                            &len) == ERROR_SUCCESS)
1703         {
1704             if (*autorun)
1705                 ParseCommandLine(autorun);
1706         }
1707         RegCloseKey(hkey);
1708     }
1709 }
1710
1711 /* Get the command that comes after a /C or /K switch */
1712 static VOID
1713 GetCmdLineCommand(TCHAR *commandline, TCHAR *ptr, BOOL AlwaysStrip)
1714 {
1715     TCHAR *LastQuote;
1716
1717     while (_istspace(*ptr))
1718         ptr++;
1719
1720     /* Remove leading quote, find final quote */
1721     if (*ptr == _T('"') &&
1722         (LastQuote = _tcsrchr(++ptr, _T('"'))) != NULL)
1723     {
1724         TCHAR *Space;
1725         /* Under certain circumstances, all quotes are preserved.
1726          * CMD /? documents these conditions as follows:
1727          *  1. No /S switch
1728          *  2. Exactly two quotes
1729          *  3. No "special characters" between the quotes
1730          *     (CMD /? says &<>()@^| but parentheses did not
1731          *     trigger this rule when I tested them.)
1732          *  4. Whitespace exists between the quotes
1733          *  5. Enclosed string is an executable filename
1734          */
1735         *LastQuote = _T('\0');
1736         for (Space = ptr + 1; Space < LastQuote; Space++)
1737         {
1738             if (_istspace(*Space))                         /* Rule 4 */
1739             {
1740                 if (!AlwaysStrip &&                        /* Rule 1 */
1741                     !_tcspbrk(ptr, _T("\"&<>@^|")) &&      /* Rules 2, 3 */
1742                     SearchForExecutable(ptr, commandline)) /* Rule 5 */
1743                 {
1744                     /* All conditions met: preserve both the quotes */
1745                     *LastQuote = _T('"');
1746                     _tcscpy(commandline, ptr - 1);
1747                     return;
1748                 }
1749                 break;
1750             }
1751         }
1752
1753         /* The conditions were not met: remove both the
1754          * leading quote and the last quote */
1755         _tcscpy(commandline, ptr);
1756         _tcscpy(&commandline[LastQuote - ptr], LastQuote + 1);
1757         return;
1758     }
1759
1760     /* No quotes; just copy */
1761     _tcscpy(commandline, ptr);
1762 }
1763
1764
1765 #ifdef INCLUDE_CMD_COLOR
1766
1767 BOOL ConGetDefaultAttributes(PWORD pwDefAttr)
1768 {
1769     BOOL Success;
1770     HANDLE hConsole;
1771     CONSOLE_SCREEN_BUFFER_INFO csbi;
1772
1773     /* Do not modify *pwDefAttr if we fail, in which case use default attributes */
1774
1775     hConsole = CreateFile(_T("CONOUT$"), GENERIC_READ|GENERIC_WRITE,
1776                           FILE_SHARE_READ|FILE_SHARE_WRITE, NULL,
1777                           OPEN_EXISTING, 0, NULL);
1778     if (hConsole == INVALID_HANDLE_VALUE)
1779         return FALSE; // No default console
1780
1781     Success = GetConsoleScreenBufferInfo(hConsole, &csbi);
1782     if (Success)
1783         *pwDefAttr = csbi.wAttributes;
1784
1785     CloseHandle(hConsole);
1786     return Success;
1787 }
1788
1789 #endif
1790
1791
1792 /*
1793  * Set up global initializations and process parameters
1794  */
1795 static VOID
1796 Initialize(VOID)
1797 {
1798     HMODULE NtDllModule;
1799     TCHAR commandline[CMDLINE_LENGTH];
1800     TCHAR ModuleName[_MAX_PATH + 1];
1801     INT nExitCode;
1802
1803     HANDLE hOut;
1804
1805     TCHAR *ptr, *cmdLine, option = 0;
1806     BOOL AlwaysStrip = FALSE;
1807     BOOL AutoRun = TRUE;
1808
1809     /* Get version information */
1810     InitOSVersion();
1811
1812     /* Some people like to run ReactOS cmd.exe on Win98, it helps in the
1813      * build process. So don't link implicitly against ntdll.dll, load it
1814      * dynamically instead */
1815     NtDllModule = GetModuleHandle(TEXT("ntdll.dll"));
1816     if (NtDllModule != NULL)
1817     {
1818         NtQueryInformationProcessPtr = (NtQueryInformationProcessProc)GetProcAddress(NtDllModule, "NtQueryInformationProcess");
1819         NtReadVirtualMemoryPtr = (NtReadVirtualMemoryProc)GetProcAddress(NtDllModule, "NtReadVirtualMemory");
1820     }
1821
1822     /* Load the registry settings */
1823     LoadRegistrySettings(HKEY_LOCAL_MACHINE);
1824     LoadRegistrySettings(HKEY_CURRENT_USER);
1825
1826     /* Initialize our locale */
1827     InitLocale();
1828
1829     /* Get default input and output console handles */
1830     hOut = GetStdHandle(STD_OUTPUT_HANDLE);
1831     hIn  = GetStdHandle(STD_INPUT_HANDLE);
1832
1833     /* Initialize prompt support */
1834     InitPrompt();
1835
1836 #ifdef FEATURE_DIR_STACK
1837     /* Initialize directory stack */
1838     InitDirectoryStack();
1839 #endif
1840
1841 #ifdef FEATURE_HISTORY
1842     /* Initialize history */
1843     InitHistory();
1844 #endif
1845
1846     /* Set COMSPEC environment variable */
1847     if (GetModuleFileName(NULL, ModuleName, ARRAYSIZE(ModuleName)) != 0)
1848     {
1849         ModuleName[_MAX_PATH] = _T('\0');
1850         SetEnvironmentVariable (_T("COMSPEC"), ModuleName);
1851     }
1852
1853     /* Add ctrl break handler */
1854     AddBreakHandler();
1855
1856     /* Set our default console mode */
1857     SetConsoleMode(hOut, 0); // Reinitialize the console output mode
1858     SetConsoleMode(hOut, ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
1859     SetConsoleMode(hIn , ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
1860
1861     cmdLine = GetCommandLine();
1862     TRACE ("[command args: %s]\n", debugstr_aw(cmdLine));
1863
1864     for (ptr = cmdLine; *ptr; ptr++)
1865     {
1866         if (*ptr == _T('/'))
1867         {
1868             option = _totupper(ptr[1]);
1869             if (option == _T('?'))
1870             {
1871                 ConOutResPaging(TRUE,STRING_CMD_HELP8);
1872                 nErrorLevel = 1;
1873                 bExit = TRUE;
1874                 return;
1875             }
1876             else if (option == _T('P'))
1877             {
1878                 if (!IsExistingFile (_T("\\autoexec.bat")))
1879                 {
1880 #ifdef INCLUDE_CMD_DATE
1881                     cmd_date (_T(""));
1882 #endif
1883 #ifdef INCLUDE_CMD_TIME
1884                     cmd_time (_T(""));
1885 #endif
1886                 }
1887                 else
1888                 {
1889                     ParseCommandLine (_T("\\autoexec.bat"));
1890                 }
1891                 bCanExit = FALSE;
1892             }
1893             else if (option == _T('A'))
1894             {
1895                 bUnicodeOutput = FALSE;
1896             }
1897             else if (option == _T('C') || option == _T('K') || option == _T('R'))
1898             {
1899                 /* Remainder of command line is a command to be run */
1900                 break;
1901             }
1902             else if (option == _T('D'))
1903             {
1904                 AutoRun = FALSE;
1905             }
1906             else if (option == _T('Q'))
1907             {
1908                 bDisableBatchEcho = TRUE;
1909             }
1910             else if (option == _T('S'))
1911             {
1912                 AlwaysStrip = TRUE;
1913             }
1914 #ifdef INCLUDE_CMD_COLOR
1915             else if (!_tcsnicmp(ptr, _T("/T:"), 3))
1916             {
1917                 /* Process /T (color) argument; overwrite any previous settings */
1918                 wDefColor = (WORD)_tcstoul(&ptr[3], &ptr, 16);
1919             }
1920 #endif
1921             else if (option == _T('U'))
1922             {
1923                 bUnicodeOutput = TRUE;
1924             }
1925             else if (option == _T('V'))
1926             {
1927                 // FIXME: Check validity of the parameter given to V !
1928                 bDelayedExpansion = _tcsnicmp(&ptr[2], _T(":OFF"), 4);
1929             }
1930             else if (option == _T('E'))
1931             {
1932                 // FIXME: Check validity of the parameter given to E !
1933                 bEnableExtensions = _tcsnicmp(&ptr[2], _T(":OFF"), 4);
1934             }
1935             else if (option == _T('X'))
1936             {
1937                 /* '/X' is identical to '/E:ON' */
1938                 bEnableExtensions = TRUE;
1939             }
1940             else if (option == _T('Y'))
1941             {
1942                 /* '/Y' is identical to '/E:OFF' */
1943                 bEnableExtensions = FALSE;
1944             }
1945         }
1946     }
1947
1948 #ifdef INCLUDE_CMD_COLOR
1949     if (wDefColor == 0)
1950     {
1951         /*
1952          * If we still do not have the console colour attribute set,
1953          * retrieve the default one.
1954          */
1955         ConGetDefaultAttributes(&wDefColor);
1956     }
1957
1958     if (wDefColor != 0)
1959         ConSetScreenColor(wDefColor, TRUE);
1960 #endif
1961
1962     if (!*ptr)
1963     {
1964         /* If neither /C or /K was given, display a simple version string */
1965         ConOutChar(_T('\n'));
1966         ConOutResPrintf(STRING_REACTOS_VERSION,
1967                         _T(KERNEL_VERSION_STR),
1968                         _T(KERNEL_VERSION_BUILD_STR));
1969         ConOutPuts(_T("(C) Copyright 1998-") _T(COPYRIGHT_YEAR) _T(" ReactOS Team.\n"));
1970     }
1971
1972     if (AutoRun)
1973     {
1974         ExecuteAutoRunFile(HKEY_LOCAL_MACHINE);
1975         ExecuteAutoRunFile(HKEY_CURRENT_USER);
1976     }
1977
1978     if (*ptr)
1979     {
1980         /* Do the /C or /K command */
1981         GetCmdLineCommand(commandline, &ptr[2], AlwaysStrip);
1982         bWaitForCommand = TRUE;
1983         nExitCode = ParseCommandLine(commandline);
1984         bWaitForCommand = FALSE;
1985         if (option != _T('K'))
1986         {
1987             nErrorLevel = nExitCode;
1988             bExit = TRUE;
1989         }
1990     }
1991 }
1992
1993
1994 static VOID Cleanup(VOID)
1995 {
1996     /* Run cmdexit.bat */
1997     if (IsExistingFile(_T("cmdexit.bat")))
1998     {
1999         ConErrResPuts(STRING_CMD_ERROR5);
2000
2001         ParseCommandLine(_T("cmdexit.bat"));
2002     }
2003     else if (IsExistingFile(_T("\\cmdexit.bat")))
2004     {
2005         ConErrResPuts(STRING_CMD_ERROR5);
2006         ParseCommandLine(_T("\\cmdexit.bat"));
2007     }
2008
2009 #ifdef FEATURE_DIRECTORY_STACK
2010     /* Destroy directory stack */
2011     DestroyDirectoryStack();
2012 #endif
2013
2014 #ifdef FEATURE_HISTORY
2015     CleanHistory();
2016 #endif
2017
2018     /* Free GetEnvVar's buffer */
2019     GetEnvVar(NULL);
2020
2021     /* Remove ctrl break handler */
2022     RemoveBreakHandler();
2023
2024     /* Restore the default console mode */
2025     SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE),
2026                    ENABLE_PROCESSED_INPUT | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT);
2027     SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE),
2028                    ENABLE_PROCESSED_OUTPUT | ENABLE_WRAP_AT_EOL_OUTPUT);
2029
2030     DeleteCriticalSection(&ChildProcessRunningLock);
2031 }
2032
2033 /*
2034  * main function
2035  */
2036 int _tmain(int argc, const TCHAR *argv[])
2037 {
2038     TCHAR startPath[MAX_PATH];
2039
2040     InitializeCriticalSection(&ChildProcessRunningLock);
2041     lpOriginalEnvironment = DuplicateEnvironment();
2042
2043     GetCurrentDirectory(ARRAYSIZE(startPath), startPath);
2044     _tchdir(startPath);
2045
2046     SetFileApisToOEM();
2047     InputCodePage = GetConsoleCP();
2048     OutputCodePage = GetConsoleOutputCP();
2049
2050     CMD_ModuleHandle = GetModuleHandle(NULL);
2051
2052     /* Perform general initialization, parse switches on command-line */
2053     Initialize();
2054
2055     /* Call prompt routine */
2056     ProcessInput();
2057
2058     /* Do the cleanup */
2059     Cleanup();
2060
2061     cmd_free(lpOriginalEnvironment);
2062
2063     cmd_exit(nErrorLevel);
2064     return nErrorLevel;
2065 }
2066
2067 /* EOF */