reactos/subsys/system/cmd/internal.c

   1 /*
   2  *  INTERNAL.C - command.com internal commands.
   3  *
   4  *
   5  *  History:
   6  *
   7  *  17/08/94 (Tim Norman)
   8  *    started.
   9  *
  10  *  08/08/95 (Matt Rains)
  11  *    i have cleaned up the source code. changes now bring this source into
  12  *    guidelines for recommended programming practice.
  13  *
  14  *  cd()
  15  *    started.
  16  *
  17  *  dir()
  18  *    i have added support for file attributes to the DIR() function. the
  19  *    routine adds "d" (directory) and "r" (read only) output. files with the
  20  *    system attribute have the filename converted to lowercase. files with
  21  *    the hidden attribute are not displayed.
  22  *
  23  *    i have added support for directorys. now if the directory attribute is
  24  *    detected the file size if replaced with the string "<dir>".
  25  *
  26  *  ver()
  27  *    started.
  28  *
  29  *  md()
  30  *    started.
  31  *
  32  *  rd()
  33  *    started.
  34  *
  35  *  del()
  36  *    started.
  37  *
  38  *  does not support wildcard selection.
  39  *
  40  *  todo: add delete directory support.
  41  *        add recursive directory delete support.
  42  *
  43  *  ren()
  44  *    started.
  45  *
  46  *  does not support wildcard selection.
  47  *
  48  *    todo: add rename directory support.
  49  *
  50  *  a general structure has been used for the cd, rd and md commands. this
  51  *  will be better in the long run. it is too hard to maintain such diverse
  52  *  functions when you are involved in a group project like this.
  53  *
  54  *  12/14/95 (Tim Norman)
  55  *    fixed DIR so that it will stick \*.* if a directory is specified and
  56  *    that it will stick on .* if a file with no extension is specified or
  57  *    *.* if it ends in a \
  58  *
  59  *  1/6/96 (Tim Norman)
  60  *    added an isatty call to DIR so it won't prompt for keypresses unless
  61  *    stdin and stdout are the console.
  62  *
  63  *    changed parameters to be mutually consistent to make calling the
  64  *    functions easier
  65  *
  66  *  rem()
  67  *    started.
  68  *
  69  *  doskey()
  70  *    started.
  71  *
  72  *    01/22/96 (Oliver Mueller)
  73  *        error messages are now handled by perror.
  74  *
  75  *    02/05/96 (Tim Norman)
  76  *        converted all functions to accept first/rest parameters
  77  *
  78  *    07/26/96 (Tim Norman)
  79  *        changed return values to int instead of void
  80  *
  81  *        path() started.
  82  *
  83  *    12/23/96 (Aaron Kaufman)
  84  *        rewrote dir() to mimic MS-DOS's dir
  85  *
  86  *    01/28/97 (Tim Norman)
  87  *        cleaned up Aaron's DIR code
  88  *
  89  *    06/13/97 (Tim Norman)
  90  *        moved DIR code to dir.c
  91  *        re-implemented Aaron's DIR code
  92  *
  93  *    06/14/97 (Steffan Kaiser)
  94  *        ctrl-break handling
  95  *        bug fixes
  96  *
  97  *    27-Jul-1998 (John P Price <linux-guru@gcfl.net>)
  98  *        added config.h include
  99  *
 100  *    03-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 101  *        Replaced DOS calls by Win32 calls.
 102  *
 103  *    08-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 104  *        Added help texts ("/?").
 105  *
 106  *    18-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 107  *        Added support for quoted arguments (cd "program files").
 108  *
 109  *    07-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 110  *        Clean up.
 111  *
 112  *    26-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 113  *        Replaced remaining CRT io functions by Win32 io functions.
 114  *        Unicode safe!
 115  *
 116  *    30-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 117  *        Added "cd -" feature. Changes to the previous directory.
 118  *
 119  *    15-Mar-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
 120  *        Fixed bug in "cd -" feature. If the previous directory was a root
 121  *        directory, it was ignored.
 122  *
 123  *    23-Feb-2001 (Carl Nettelblad <cnettel@hem.passagen.se>)
 124  *        Improved chdir/cd command.
 125  *
 126  *    02-Apr-2004 (Magnus Olsen <magnus@greatlord.com>)
 127  *        Remove all hard code string so they can be
 128  *                translate to other langues.
 129  *
 130  *    19-jul-2005 (Brandon Turner <turnerb7@msu.edu)
 131  *        Rewrite the CD, it working as Windows 2000 CMD
 132  *
 133  *    19-jul-2005 (Magnus Olsen <magnus@greatlord.com)
 134  *        Add SetRootPath and GetRootPath
 135  */
 136
 137 #include <precomp.h>
 138 #include "resource.h"
 139
 140 #ifdef INCLUDE_CMD_CHDIR
 141
 142 static LPTSTR lpLastPath;
 143
 144
 145 VOID InitLastPath (VOID)
 146 {
 147         lpLastPath = NULL;
 148 }
 149
 150
 151 VOID FreeLastPath (VOID)
 152 {
 153         if (lpLastPath)
 154                 free (lpLastPath);
 155 }
 156
 157 /* help functions for getting current path from drive
 158    without changing drive. Return code 0 = ok, 1 = fail.
 159    INT GetRootPath("C:",outbuffer,chater size of outbuffer);
 160    the first param can have any size, if the the two frist
 161    letter are not a drive with : it will get Currentpath on
 162    current drive exacly as GetCurrentDirectory does.
 163    */
 164
 165 INT GetRootPath(TCHAR *InPath,TCHAR *OutPath,INT size)
 166 {
 167   INT retcode = 1;
 168
 169   if (_tcslen(InPath)>1)
 170   {
 171     if (InPath[1]==_T(':'))
 172     {
 173       INT t=0;
 174
 175       if ((InPath[0] >= _T('0')) && (InPath[0] <= _T('9')))
 176       {
 177           t = (InPath[0] - _T('0')) +28;
 178       }
 179
 180       if ((InPath[0] >= _T('a')) && (InPath[0] <= _T('z')))
 181       {
 182           t = (InPath[0] - _T('a')) +1;
 183           InPath[0] = t + _T('A') - 1;
 184       }
 185
 186        if ((InPath[0] >= _T('A')) && (InPath[0] <= _T('Z')))
 187       {
 188           t = (InPath[0] - _T('A')) +1;
 189       }
 190
 191       if (_tgetdcwd(t,OutPath,size) != NULL)
 192       {
 193         return 0;
 194       }
 195      }
 196     }
 197
 198   /* fail */
 199   if (_tcslen(InPath)>1)
 200   {
 201     if (InPath[1]==_T(':'))
 202        return 1;
 203   }
 204
 205   /* Get current directory */
 206   retcode = GetCurrentDirectory(size,OutPath);
 207   if (retcode==0)
 208       return 1;
 209
 210   return 0;
 211 }
 212
 213
 214 BOOL SetRootPath(TCHAR *InPath)
 215 {
 216   TCHAR oldpath[MAX_PATH];
 217   TCHAR OutPath[MAX_PATH];
 218   TCHAR OutPathTemp[MAX_PATH];
 219   TCHAR OutPathTemp2[MAX_PATH];
 220   BOOL fail;
 221
 222
 223   /* Get The current directory path and save it */
 224   fail = GetCurrentDirectory(MAX_PATH,oldpath);
 225   if (!fail)
 226       return 1;
 227
 228   /* Get current drive directory path if C: was only pass down*/
 229
 230   if (_tcsncicmp(&InPath[1],_T(":\\"),2)!=0)
 231   {
 232       if (!GetRootPath(InPath,OutPathTemp,MAX_PATH))
 233          _tcscpy(OutPathTemp,InPath);
 234   }
 235   else
 236   {
 237     _tcscpy(OutPathTemp,InPath);
 238   }
 239
 240    _tcsupr(OutPathTemp);
 241   /* The use of both of these together will correct the case of a path
 242      where as one alone or GetFullPath will not.  Exameple:
 243           c:\windows\SYSTEM32 => C:\WINDOWS\system32 */
 244   GetShortPathName(OutPathTemp, OutPathTemp2, MAX_PATH);
 245   GetLongPathName(OutPathTemp2, OutPath, MAX_PATH);
 246
 247   fail = SetCurrentDirectory(OutPath);
 248   if (!fail)
 249       return 1;
 250
 251
 252
 253   SetCurrentDirectory(OutPath);
 254   GetCurrentDirectory(MAX_PATH,OutPath);
 255   _tchdir(OutPath);
 256
 257   if (_tcsncicmp(OutPath,oldpath,2)!=0)
 258       SetCurrentDirectory(oldpath);
 259
 260  return 0;
 261 }
 262
 263
 264 /*
 265  * CD / CHDIR
 266  *
 267  */
 268 INT cmd_chdir (LPTSTR cmd, LPTSTR param)
 269 {
 270
 271         WIN32_FIND_DATA f;
 272         HANDLE hFile;
 273         BOOL bChangeDrive = FALSE;
 274         TCHAR szPath[MAX_PATH];
 275         TCHAR szFinalPath[MAX_PATH];
 276         TCHAR * tmpPath;
 277         TCHAR szCurrent[MAX_PATH];
 278         TCHAR szMsg[RC_STRING_MAX_SIZE];
 279         INT i;
 280
 281
 282         /* Filter out special cases first */
 283
 284         /* Print Help */
 285         if (!_tcsncmp(param, _T("/?"), 2))
 286         {
 287                 ConOutResPaging(TRUE,STRING_CD_HELP);
 288                 return 0;
 289         }
 290
 291   /* Set Error Level to Success */
 292         nErrorLevel = 0;
 293
 294         /* Input String Contains /D Switch */
 295         if (!_tcsncicmp(param, _T("/D"), 2))
 296         {
 297                 bChangeDrive = TRUE;
 298                 tmpPath = _tcsstr(param,_T(" "));
 299                 tmpPath++;
 300                 _tcscpy(szPath,tmpPath);
 301
 302         }
 303         else
 304         {
 305                 _tcscpy(szPath,param);
 306         }
 307
 308         /* Print Current Directory on a disk */
 309         if (_tcslen(szPath) == 2 && szPath[1] == _T(':'))
 310         {
 311                 if(GetRootPath(szPath,szCurrent,MAX_PATH))
 312                 {
 313                         nErrorLevel = 1;
 314                         return 1;
 315                 }
 316                 ConOutPuts(szCurrent);
 317                 return 0;
 318         }
 319
 320         /* Get Current Directory */
 321         GetRootPath(_T("."),szCurrent,MAX_PATH);
 322
 323    /* Remove " */
 324         i = 0;
 325         while(i < _tcslen(szPath))
 326         {
 327                 if(szPath[i] == _T('\"'))
 328                         memmove(&szPath[i],&szPath[i + 1], _tcslen(&szPath[i]) * sizeof(TCHAR));
 329                 else
 330                         i++;
 331         }
 332
 333         tmpPath = szPath;
 334         while (_istspace (*tmpPath))
 335                         tmpPath++;
 336         _tcscpy(szPath,tmpPath);
 337
 338         if (szPath[0] == _T('\0'))
 339         {
 340                 ConOutPuts(szCurrent);
 341                 return 0;
 342         }
 343
 344
 345         /* change to full path if relative path was given */
 346         GetFullPathName(szPath,MAX_PATH,szFinalPath,NULL);
 347
 348         if(szFinalPath[_tcslen(szFinalPath) - 1] == _T('\\') && _tcslen(szFinalPath) > 3)
 349                 szFinalPath[_tcslen(szFinalPath) - 1] = _T('\0');
 350
 351         /* Handle Root Directory Alone*/
 352         if (_tcslen(szFinalPath) == 3 && szFinalPath[1] == _T(':'))
 353         {
 354                 if(!SetRootPath(szFinalPath))
 355                 {
 356                         /* Change prompt if it is one the same drive or /D */
 357                         if(bChangeDrive || !_tcsncicmp(szFinalPath,szCurrent,1))
 358                                 SetCurrentDirectory(szFinalPath);
 359                         return 0;
 360                 }
 361                 /* Didnt find an directories */
 362                 LoadString(CMD_ModuleHandle, STRING_ERROR_PATH_NOT_FOUND, szMsg, RC_STRING_MAX_SIZE);
 363                 ConErrPrintf(szMsg);
 364                 nErrorLevel = 1;
 365                 return 1;
 366
 367         }
 368
 369         /* Get a list of all the files */
 370         hFile = FindFirstFile (szFinalPath, &f);
 371
 372         do
 373         {
 374                 if(hFile == INVALID_HANDLE_VALUE)
 375                 {
 376                         ConErrFormatMessage (GetLastError(), szFinalPath);
 377                         nErrorLevel = 1;
 378                         return 1;
 379                 }
 380
 381                 /* Strip the paths back to the folder they are in */
 382                 for(i = (_tcslen(szFinalPath) -  1); i > -1; i--)
 383                         if(szFinalPath[i] != _T('\\'))
 384                                 szFinalPath[i] = _T('\0');
 385                         else
 386                                 break;
 387
 388                 _tcscat(szFinalPath,f.cFileName);
 389
 390                 if ((f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ==  FILE_ATTRIBUTE_DIRECTORY)
 391     {
 392                         if(!SetRootPath(szFinalPath))
 393                         {
 394                                 /* Change for /D */
 395                                 if(bChangeDrive)
 396         {
 397            _tcsupr(szFinalPath);
 398            GetLongPathName(szFinalPath, szPath, MAX_PATH);
 399                                          SetCurrentDirectory(szPath);
 400         }
 401                                 return 0;
 402                         }
 403
 404                 }
 405         }while(FindNextFile (hFile, &f));
 406
 407         /* Didnt find an directories */
 408         LoadString(CMD_ModuleHandle, STRING_ERROR_PATH_NOT_FOUND, szMsg, RC_STRING_MAX_SIZE);
 409         ConErrPrintf(szMsg);
 410         nErrorLevel = 1;
 411         return 1;
 412 }
 413
 414 #endif
 415
 416
 417
 418 #ifdef INCLUDE_CMD_MKDIR
 419 /*
 420  * MD / MKDIR
 421  *
 422  */
 423 INT cmd_mkdir (LPTSTR cmd, LPTSTR param)
 424 {
 425         LPTSTR dir;             /* pointer to the directory to change to */
 426         LPTSTR place;   /* used to search for the \ when no space is used */
 427         LPTSTR *p = NULL;
 428         INT argc;
 429
 430         if (!_tcsncmp (param, _T("/?"), 2))
 431         {
 432                 ConOutResPaging(TRUE,STRING_MKDIR_HELP);
 433                 return 0;
 434         }
 435
 436
 437         /* check if there is no space between the command and the path */
 438         if (param[0] == _T('\0'))
 439         {
 440                 /* search for the \ or . so that both short & long names will work */
 441                 for (place = cmd; *place; place++)
 442                         if (*place == _T('.') || *place == _T('\\'))
 443                                 break;
 444
 445                 if (*place)
 446                         dir = place;
 447                 else
 448                         /* signal that there are no parameters */
 449                         dir = NULL;
 450         }
 451         else
 452         {
 453                 p = split (param, &argc, FALSE);
 454                 if (argc > 1)
 455                 {
 456                         /*JPP 20-Jul-1998 use standard error message */
 457                         error_too_many_parameters (param);
 458                         freep (p);
 459                         return 1;
 460                 }
 461                 else
 462                         dir = p[0];
 463         }
 464
 465         if (!dir)
 466         {
 467                 ConErrResPuts (STRING_ERROR_REQ_PARAM_MISSING);
 468                 return 1;
 469         }
 470
 471         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 472         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 473                 dir[_tcslen(dir) - 1] = _T('\0');
 474
 475         if (!CreateDirectory (dir, NULL))
 476         {
 477                 ErrorMessage (GetLastError(), _T("MD"));
 478
 479                 freep (p);
 480                 return 1;
 481         }
 482
 483         freep (p);
 484
 485         return 0;
 486 }
 487 #endif
 488
 489
 490 #ifdef INCLUDE_CMD_RMDIR
 491 /*
 492  * RD / RMDIR
 493  *
 494  */
 495 INT cmd_rmdir (LPTSTR cmd, LPTSTR param)
 496 {
 497         LPTSTR dir;             /* pointer to the directory to change to */
 498         LPTSTR place;   /* used to search for the \ when no space is used */
 499
 500         LPTSTR *p = NULL;
 501         INT argc;
 502
 503         if (!_tcsncmp (param, _T("/?"), 2))
 504         {
 505                 ConOutResPaging(TRUE,STRING_RMDIR_HELP);
 506                 return 0;
 507         }
 508
 509         /* check if there is no space between the command and the path */
 510         if (param[0] == _T('\0'))
 511         {
 512                 /* search for the \ or . so that both short & long names will work */
 513                 for (place = cmd; *place; place++)
 514                         if (*place == _T('.') || *place == _T('\\'))
 515                                 break;
 516
 517                 if (*place)
 518                         dir = place;
 519                 else
 520                         /* signal that there are no parameters */
 521                         dir = NULL;
 522         }
 523         else
 524         {
 525                 p = split (param, &argc, FALSE);
 526                 if (argc > 1)
 527                 {
 528                         /*JPP 20-Jul-1998 use standard error message */
 529                         error_too_many_parameters (param);
 530                         freep (p);
 531                         return 1;
 532                 }
 533                 else
 534                         dir = p[0];
 535         }
 536
 537         if (!dir)
 538         {
 539                 ConErrResPuts(STRING_ERROR_REQ_PARAM_MISSING);
 540                 return 1;
 541         }
 542
 543         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 544         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 545                 dir[_tcslen(dir) - 1] = _T('\0');
 546
 547         if (!RemoveDirectory (dir))
 548         {
 549                 ErrorMessage (GetLastError(), _T("RD"));
 550                 freep (p);
 551
 552                 return 1;
 553         }
 554
 555         freep (p);
 556
 557         return 0;
 558 }
 559 #endif
 560
 561
 562 /*
 563  * set the exitflag to true
 564  *
 565  */
 566 INT CommandExit (LPTSTR cmd, LPTSTR param)
 567 {
 568         if (!_tcsncmp (param, _T("/?"), 2))
 569                 ConOutResPaging(TRUE,STRING_EXIT_HELP);
 570
 571         if (bc != NULL && _tcsnicmp(param,_T("/b"),2) == 0)
 572         {
 573                 param += 2;
 574                 while (_istspace (*param))
 575                         param++;
 576                 if (_istdigit(*param))
 577                         nErrorLevel = _ttoi(param);
 578                 ExitBatch (NULL);
 579         }
 580
 581         else
 582                 bExit = TRUE;
 583
 584
 585         return 0;
 586
 587 }
 588
 589 #ifdef INCLUDE_CMD_REM
 590 /*
 591  * does nothing
 592  *
 593  */
 594 INT CommandRem (LPTSTR cmd, LPTSTR param)
 595 {
 596         if (!_tcsncmp (param, _T("/?"), 2))
 597         {
 598                 ConOutResPaging(TRUE,STRING_REM_HELP);
 599         }
 600
 601         return 0;
 602 }
 603 #endif /* INCLUDE_CMD_REM */
 604
 605
 606 INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
 607 {
 608         PrintCommandList ();
 609         return 0;
 610 }
 611
 612 INT CommandShowCommandsDetail (LPTSTR cmd, LPTSTR param)
 613 {
 614         PrintCommandListDetail ();
 615         return 0;
 616 }
 617
 618 /* EOF */