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       TCHAR num[2];
 174       INT t=0;
 175
 176       num[1] = _T('\0');
 177       num[0] = InPath[0];
 178       _tcslwr(num);
 179
 180       if ((InPath[0] >= _T('0')) && (InPath[0] <= _T('9')))
 181       {
 182           t = (InPath[0] - _T('0')) +28;
 183       }
 184
 185       if ((InPath[0] >= _T('a')) && (InPath[0] <= _T('z')))
 186       {
 187           t = (InPath[0] - _T('a')) +1;
 188       }
 189
 190       if (_tgetdcwd(t,OutPath,size) != NULL)
 191       {
 192         return 0;
 193       }
 194      }
 195     }
 196
 197   /* fail */
 198   if (_tcslen(InPath)>1)
 199   {
 200     if (InPath[1]==_T(':'))
 201        return 1;
 202   }
 203
 204   /* Get current directory */
 205   retcode = GetCurrentDirectory(size,OutPath);
 206   if (retcode==0)
 207       return 1;
 208
 209   return 0;
 210 }
 211
 212
 213 BOOL SetRootPath(TCHAR *InPath)
 214 {
 215   TCHAR oldpath[MAX_PATH];
 216   TCHAR OutPath[MAX_PATH];
 217   BOOL fail;
 218
 219   /* Get The current directory path and save it */
 220   fail = GetCurrentDirectory(MAX_PATH,oldpath);
 221   if (!fail)
 222       return 1;
 223
 224   /* Get current drive directory path if C: was only pass down*/
 225
 226   if (_tcsncicmp(&InPath[1],_T(":\\"),2)!=0)
 227   {
 228       if (!GetRootPath(InPath,OutPath,MAX_PATH))
 229          _tcscpy(OutPath,InPath);
 230   }
 231   else
 232   {
 233     _tcscpy(OutPath,InPath);
 234   }
 235
 236   fail = SetCurrentDirectory(OutPath);
 237   if (!fail)
 238       return 1;
 239
 240   SetCurrentDirectory(OutPath);
 241   GetCurrentDirectory(MAX_PATH,OutPath);
 242   _tchdir(OutPath);
 243
 244   if (_tcsncicmp(OutPath,oldpath,2)!=0)
 245       SetCurrentDirectory(oldpath);
 246
 247  return 0;
 248 }
 249
 250
 251 /*
 252  * CD / CHDIR
 253  *
 254  */
 255 INT cmd_chdir (LPTSTR cmd, LPTSTR param)
 256 {
 257
 258         WIN32_FIND_DATA f;
 259         HANDLE hFile;
 260         BOOL bChangeDrive = FALSE;
 261         TCHAR szPath[MAX_PATH];
 262         TCHAR szFinalPath[MAX_PATH];
 263         TCHAR * tmpPath;
 264         TCHAR szCurrent[MAX_PATH];
 265         TCHAR szMsg[RC_STRING_MAX_SIZE];
 266         INT i;
 267
 268
 269         /* Filter out special cases first */
 270
 271         /* Print Help */
 272         if (!_tcsncmp(param, _T("/?"), 2))
 273         {
 274                 ConOutResPaging(TRUE,STRING_CD_HELP);
 275                 return 0;
 276         }
 277
 278   /* Set Error Level to Success */
 279         nErrorLevel = 0;
 280
 281         /* Input String Contains /D Switch */
 282         if (!_tcsncicmp(param, _T("/D"), 2))
 283         {
 284                 bChangeDrive = TRUE;
 285                 tmpPath = _tcsstr(param,_T(" "));
 286                 tmpPath++;
 287                 _tcscpy(szPath,tmpPath);
 288
 289         }
 290         else
 291         {
 292                 _tcscpy(szPath,param);
 293         }
 294
 295         /* Print Current Directory on a disk */
 296         if (_tcslen(szPath) == 2 && szPath[1] == _T(':'))
 297         {
 298                 if(GetRootPath(szPath,szCurrent,MAX_PATH))
 299                 {
 300                         nErrorLevel = 1;
 301                         return 1;
 302                 }
 303                 ConOutPuts(szCurrent);
 304                 return 0;
 305
 306         }
 307
 308         /* Get Current Directory */
 309         GetRootPath(_T("."),szCurrent,MAX_PATH);
 310
 311         /* Remove " */
 312         if(szPath[0] == _T('\"'))
 313         {
 314                 tmpPath = _tcsstr(szPath,_T("\""));
 315                 tmpPath++;
 316                 _tcscpy(szPath,tmpPath);
 317         }
 318
 319         if(szPath[_tcslen(szPath) - 1] == _T('\"'))
 320         {
 321                 szPath[_tcslen(szPath) - 1] = _T('\0');
 322         }
 323
 324         tmpPath = szPath;
 325         while (_istspace (*tmpPath))
 326                         tmpPath++;
 327         _tcscpy(szPath,tmpPath);
 328
 329         if (szPath[0] == _T('\0'))
 330         {
 331                 ConOutPuts(szCurrent);
 332                 return 0;
 333         }
 334
 335
 336         /* change to full path if relative path was given */
 337         GetFullPathName(szPath,MAX_PATH,szFinalPath,NULL);
 338
 339         if(szFinalPath[_tcslen(szFinalPath) - 1] == _T('\\') && _tcslen(szFinalPath) > 3)
 340                 szFinalPath[_tcslen(szFinalPath) - 1] = _T('\0');
 341
 342         /* Handle Root Directory Alone*/
 343         if (_tcslen(szPath) == 3 && szPath[1] == _T(':'))
 344         {
 345                 if(!SetRootPath(szFinalPath))
 346                 {
 347                         /* Change prompt if it is one the same drive or /D */
 348                         if(bChangeDrive || !_tcsncicmp(szFinalPath,szCurrent,1))
 349                                 SetCurrentDirectory(szFinalPath);
 350                         return 0;
 351                 }
 352                 /* Didnt find an directories */
 353                 LoadString(CMD_ModuleHandle, STRING_ERROR_PATH_NOT_FOUND, szMsg, RC_STRING_MAX_SIZE);
 354                 ConErrPrintf(szMsg);
 355                 nErrorLevel = 1;
 356                 return 1;
 357
 358         }
 359
 360         /* Get a list of all the files */
 361         hFile = FindFirstFile (szFinalPath, &f);
 362
 363         do
 364         {
 365                 if(hFile == INVALID_HANDLE_VALUE)
 366                 {
 367                         ConErrFormatMessage (GetLastError(), szFinalPath);
 368                         nErrorLevel = 1;
 369                         return 1;
 370                 }
 371
 372                 /* Strip the paths back to the folder they are in */
 373                 for(i = (_tcslen(szFinalPath) -  1); i > -1; i--)
 374                         if(szFinalPath[i] != _T('\\'))
 375                                 szFinalPath[i] = _T('\0');
 376                         else
 377                                 break;
 378
 379                 _tcscat(szFinalPath,f.cFileName);
 380
 381                 if(IsExistingDirectory(szFinalPath))
 382                 {
 383                         if(!SetRootPath(szFinalPath))
 384                         {
 385                                 /* Change for /D */
 386                                 if(bChangeDrive)
 387                                         SetCurrentDirectory(szFinalPath);
 388                                 return 0;
 389                         }
 390                 }
 391         }while(FindNextFile (hFile, &f));
 392
 393         /* Didnt find an directories */
 394         LoadString(CMD_ModuleHandle, STRING_ERROR_PATH_NOT_FOUND, szMsg, RC_STRING_MAX_SIZE);
 395         ConErrPrintf(szMsg);
 396         nErrorLevel = 1;
 397         return 1;
 398 }
 399
 400 #endif
 401
 402
 403
 404 #ifdef INCLUDE_CMD_MKDIR
 405 /*
 406  * MD / MKDIR
 407  *
 408  */
 409 INT cmd_mkdir (LPTSTR cmd, LPTSTR param)
 410 {
 411         LPTSTR dir;             /* pointer to the directory to change to */
 412         LPTSTR place;   /* used to search for the \ when no space is used */
 413         LPTSTR *p = NULL;
 414         INT argc;
 415
 416         if (!_tcsncmp (param, _T("/?"), 2))
 417         {
 418                 ConOutResPaging(TRUE,STRING_MKDIR_HELP);
 419                 return 0;
 420         }
 421
 422
 423         /* check if there is no space between the command and the path */
 424         if (param[0] == _T('\0'))
 425         {
 426                 /* search for the \ or . so that both short & long names will work */
 427                 for (place = cmd; *place; place++)
 428                         if (*place == _T('.') || *place == _T('\\'))
 429                                 break;
 430
 431                 if (*place)
 432                         dir = place;
 433                 else
 434                         /* signal that there are no parameters */
 435                         dir = NULL;
 436         }
 437         else
 438         {
 439                 p = split (param, &argc, FALSE);
 440                 if (argc > 1)
 441                 {
 442                         /*JPP 20-Jul-1998 use standard error message */
 443                         error_too_many_parameters (param);
 444                         freep (p);
 445                         return 1;
 446                 }
 447                 else
 448                         dir = p[0];
 449         }
 450
 451         if (!dir)
 452         {
 453                 ConErrResPuts (STRING_ERROR_REQ_PARAM_MISSING);
 454                 return 1;
 455         }
 456
 457         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 458         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 459                 dir[_tcslen(dir) - 1] = _T('\0');
 460
 461         if (!CreateDirectory (dir, NULL))
 462         {
 463                 ErrorMessage (GetLastError(), _T("MD"));
 464
 465                 freep (p);
 466                 return 1;
 467         }
 468
 469         freep (p);
 470
 471         return 0;
 472 }
 473 #endif
 474
 475
 476 #ifdef INCLUDE_CMD_RMDIR
 477 /*
 478  * RD / RMDIR
 479  *
 480  */
 481 INT cmd_rmdir (LPTSTR cmd, LPTSTR param)
 482 {
 483         LPTSTR dir;             /* pointer to the directory to change to */
 484         LPTSTR place;   /* used to search for the \ when no space is used */
 485
 486         LPTSTR *p = NULL;
 487         INT argc;
 488
 489         if (!_tcsncmp (param, _T("/?"), 2))
 490         {
 491                 ConOutResPaging(TRUE,STRING_RMDIR_HELP);
 492                 return 0;
 493         }
 494
 495         /* check if there is no space between the command and the path */
 496         if (param[0] == _T('\0'))
 497         {
 498                 /* search for the \ or . so that both short & long names will work */
 499                 for (place = cmd; *place; place++)
 500                         if (*place == _T('.') || *place == _T('\\'))
 501                                 break;
 502
 503                 if (*place)
 504                         dir = place;
 505                 else
 506                         /* signal that there are no parameters */
 507                         dir = NULL;
 508         }
 509         else
 510         {
 511                 p = split (param, &argc, FALSE);
 512                 if (argc > 1)
 513                 {
 514                         /*JPP 20-Jul-1998 use standard error message */
 515                         error_too_many_parameters (param);
 516                         freep (p);
 517                         return 1;
 518                 }
 519                 else
 520                         dir = p[0];
 521         }
 522
 523         if (!dir)
 524         {
 525                 ConErrResPuts(STRING_ERROR_REQ_PARAM_MISSING);
 526                 return 1;
 527         }
 528
 529         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 530         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 531                 dir[_tcslen(dir) - 1] = _T('\0');
 532
 533         if (!RemoveDirectory (dir))
 534         {
 535                 ErrorMessage (GetLastError(), _T("RD"));
 536                 freep (p);
 537
 538                 return 1;
 539         }
 540
 541         freep (p);
 542
 543         return 0;
 544 }
 545 #endif
 546
 547
 548 /*
 549  * set the exitflag to true
 550  *
 551  */
 552 INT CommandExit (LPTSTR cmd, LPTSTR param)
 553 {
 554         if (!_tcsncmp (param, _T("/?"), 2))
 555                 ConOutResPaging(TRUE,STRING_EXIT_HELP);
 556
 557         if (bc != NULL && _tcsnicmp(param,_T("/b"),2) == 0)
 558         {
 559                 param += 2;
 560                 while (_istspace (*param))
 561                         param++;
 562                 if (_istdigit(*param))
 563                         nErrorLevel = _ttoi(param);
 564                 ExitBatch (NULL);
 565         }
 566
 567         else
 568                 bExit = TRUE;
 569
 570
 571         return 0;
 572
 573 }
 574
 575 #ifdef INCLUDE_CMD_REM
 576 /*
 577  * does nothing
 578  *
 579  */
 580 INT CommandRem (LPTSTR cmd, LPTSTR param)
 581 {
 582         if (!_tcsncmp (param, _T("/?"), 2))
 583         {
 584                 ConOutResPaging(TRUE,STRING_REM_HELP);
 585         }
 586
 587         return 0;
 588 }
 589 #endif /* INCLUDE_CMD_REM */
 590
 591
 592 INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
 593 {
 594         PrintCommandList ();
 595         return 0;
 596 }
 597
 598 INT CommandShowCommandsDetail (LPTSTR cmd, LPTSTR param)
 599 {
 600         PrintCommandListDetail ();
 601         return 0;
 602 }
 603
 604 /* EOF */