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
 131 #include <precomp.h>
 132 #include "resource.h"
 133
 134 #ifdef INCLUDE_CMD_CHDIR
 135
 136 static LPTSTR lpLastPath;
 137
 138
 139 VOID InitLastPath (VOID)
 140 {
 141         lpLastPath = NULL;
 142 }
 143
 144
 145 VOID FreeLastPath (VOID)
 146 {
 147         if (lpLastPath)
 148                 free (lpLastPath);
 149 }
 150
 151 /* help functions for getting current path from drive
 152    without changing drive. Return code 0 = ok, 1 = fail.
 153    INT GetRootPath("C:",outbuffer,chater size of outbuffer);
 154    the first param can have any size, if the the two frist
 155    letter are not a drive with : it will get Currentpath on
 156    current drive exacly as GetCurrentDirectory does.
 157    */
 158
 159 INT GetRootPath(TCHAR *InPath,TCHAR *OutPath,INT size)
 160 {
 161   INT retcode = 1;
 162   INT t;
 163
 164    if (_tcslen(InPath)>1)
 165   {
 166     if (InPath[1]==_T(':'))
 167     {
 168       for (t=0;t<32;t++)
 169       {
 170         if (_tgetdcwd(t,OutPath,size) != NULL)
 171         {
 172           if (_tcsncicmp(InPath,OutPath,2))
 173           {
 174             retcode = 0;
 175             return retcode;
 176           }
 177          }
 178         }
 179        }
 180    }
 181
 182   /* fail to getting path devic did not exists */
 183   if (_tcslen(InPath)>1)
 184   {
 185     if (InPath[1]==_T(':'))
 186        return 1;
 187   }
 188
 189   retcode = GetCurrentDirectory(size,OutPath);
 190   if (retcode==0)
 191       return 1;
 192
 193   return 0;
 194 }
 195
 196
 197 /*
 198  * CD / CHDIR
 199  *
 200  */
 201 INT cmd_chdir (LPTSTR cmd, LPTSTR param)
 202 {
 203         LPTSTR dir;             /* pointer to the directory to change to */
 204         LPTSTR lpOldPath;
 205         size_t size, str_len;
 206         WIN32_FIND_DATA FileData;
 207     HANDLE hSearch;
 208     DWORD dwAttrs;
 209     BOOL fFinished = FALSE;
 210
 211
 212         /*Should we better declare a variable containing _tsclen(dir) ? It's used a few times,
 213           but on the other hand paths are generally not very long*/
 214
 215         if (!_tcsncmp (param, _T("/?"), 2))
 216         {
 217                 ConOutResPaging(TRUE,STRING_CD_HELP);
 218                 return 0;
 219         }
 220
 221    nErrorLevel = 0;
 222
 223         /* The whole param string is our parameter these days. The only thing we do is eliminating every quotation mark */
 224         /* Is it safe to change the characters param is pointing to? I presume it is, as there doesn't seem to be any
 225         post-processing of it after the function call (what would that accomplish?) */
 226
 227     size = _tcscspn(param,  _T("\"") );
 228         str_len = _tcslen(param)-1;
 229
 230         if ((param[size] == _T('"')) && (str_len >1))
 231         {
 232
 233          if (size==0)
 234          {
 235           _tcsncpy(param,&param[size+1],str_len);
 236           param[str_len] = _T('\0');
 237          }
 238
 239          size = _tcscspn(param,  _T("\"") );
 240      if (param[size] == _T('"'))
 241          {
 242           param[size] = _T('\0');
 243          }
 244
 245         }
 246
 247         str_len = _tcslen(param);
 248         if (str_len==1)
 249         {
 250             if (param[0] == _T('*'))
 251             {
 252                     param[0] = _T('.');
 253                 }
 254         }
 255
 256         dir=param;
 257
 258         /* if doing a CD and no parameters given, print out current directory */
 259         if (!dir || !dir[0])
 260         {
 261                 TCHAR szPath[MAX_PATH];
 262
 263                 GetCurrentDirectory (MAX_PATH, szPath);
 264                 ConOutPuts (szPath);
 265                 return 0;
 266         }
 267
 268         if (dir && _tcslen (dir) == 1 && *dir == _T('-'))
 269         {
 270                 if (lpLastPath)
 271                         dir = lpLastPath;
 272                 else
 273                         return 0;
 274         }
 275         else if (dir && _tcslen (dir)==2 && dir[1] == _T(':'))
 276         {
 277                 TCHAR szRoot[3] = _T("A:");
 278                 TCHAR szPath[MAX_PATH];
 279
 280                 szRoot[0] = _totupper (dir[0]);
 281                 GetFullPathName (szRoot, MAX_PATH, szPath, NULL);
 282
 283                 /* PathRemoveBackslash */
 284                 if (_tcslen (szPath) > 3)
 285                 {
 286                         LPTSTR p = _tcsrchr (szPath, _T('\\'));
 287                         *p = _T('\0');
 288                 }
 289
 290                 ConOutPuts (szPath);
 291
 292
 293                 return 0;
 294         }
 295
 296         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 297         if (_tcslen (dir) > 3 && dir[_tcslen (dir) - 1] == _T('\\'))
 298                 dir[_tcslen(dir) - 1] = _T('\0');
 299
 300
 301         /* store current directory */
 302         lpOldPath = (LPTSTR)malloc (MAX_PATH * sizeof(TCHAR));
 303         GetCurrentDirectory (MAX_PATH, lpOldPath);
 304
 305         if (!SetCurrentDirectory (dir))
 306         {
 307
 308             hSearch = FindFirstFile(dir, &FileData);
 309       if (hSearch == INVALID_HANDLE_VALUE)
 310       {
 311                 ConOutFormatMessage(GetLastError());
 312           free (lpOldPath);
 313           lpOldPath = NULL;
 314           nErrorLevel = 1;
 315           return 1;
 316       }
 317
 318
 319         while (!fFinished)
 320         {
 321             dwAttrs = GetFileAttributes(FileData.cFileName);
 322 #ifdef _DEBUG
 323                         DebugPrintf(_T("Search found folder :%s\n"),FileData.cFileName);
 324 #endif
 325             if ((dwAttrs & FILE_ATTRIBUTE_DIRECTORY))
 326             {
 327                           FindClose(hSearch);
 328                   // change folder
 329                          if (!SetCurrentDirectory (FileData.cFileName))
 330                          {
 331                                  ConOutFormatMessage(GetLastError());
 332                              free (lpOldPath);
 333                          lpOldPath = NULL;
 334          nErrorLevel = 1;
 335                                  return 1;
 336                          }
 337
 338
 339                          return 0;
 340              }
 341
 342              else if (!FindNextFile(hSearch, &FileData))
 343             {
 344                      FindClose(hSearch);
 345                          ConOutFormatMessage(GetLastError());
 346        nErrorLevel = 1;
 347                          free (lpOldPath);
 348                      lpOldPath = NULL;
 349                          return 1;
 350              }
 351         }
 352
 353                 //ErrorMessage (GetLastError(), _T("CD"));
 354                 ConOutFormatMessage(GetLastError());
 355     nErrorLevel = 1;
 356
 357                 /* throw away current directory */
 358                 free (lpOldPath);
 359                 lpOldPath = NULL;
 360
 361                 return 1;
 362         }
 363         else
 364         {
 365                 GetCurrentDirectory(MAX_PATH, dir);
 366                 if (dir[0]!=lpOldPath[0])
 367                 {
 368                         SetCurrentDirectory(lpOldPath);
 369                         free(lpOldPath);
 370                 }
 371                 else
 372                 {
 373                         if (lpLastPath)
 374                                 free (lpLastPath);
 375                         lpLastPath = lpOldPath;
 376                 }
 377         }
 378
 379
 380         return 0;
 381 }
 382 #endif
 383
 384
 385
 386 #ifdef INCLUDE_CMD_MKDIR
 387 /*
 388  * MD / MKDIR
 389  *
 390  */
 391 INT cmd_mkdir (LPTSTR cmd, LPTSTR param)
 392 {
 393         LPTSTR dir;             /* pointer to the directory to change to */
 394         LPTSTR place;   /* used to search for the \ when no space is used */
 395         LPTSTR *p = NULL;
 396         INT argc;
 397
 398         if (!_tcsncmp (param, _T("/?"), 2))
 399         {
 400                 ConOutResPaging(TRUE,STRING_MKDIR_HELP);
 401                 return 0;
 402         }
 403
 404
 405         /* check if there is no space between the command and the path */
 406         if (param[0] == _T('\0'))
 407         {
 408                 /* search for the \ or . so that both short & long names will work */
 409                 for (place = cmd; *place; place++)
 410                         if (*place == _T('.') || *place == _T('\\'))
 411                                 break;
 412
 413                 if (*place)
 414                         dir = place;
 415                 else
 416                         /* signal that there are no parameters */
 417                         dir = NULL;
 418         }
 419         else
 420         {
 421                 p = split (param, &argc, FALSE);
 422                 if (argc > 1)
 423                 {
 424                         /*JPP 20-Jul-1998 use standard error message */
 425                         error_too_many_parameters (param);
 426                         freep (p);
 427                         return 1;
 428                 }
 429                 else
 430                         dir = p[0];
 431         }
 432
 433         if (!dir)
 434         {
 435                 ConErrResPuts (STRING_ERROR_REQ_PARAM_MISSING);
 436                 return 1;
 437         }
 438
 439         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 440         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 441                 dir[_tcslen(dir) - 1] = _T('\0');
 442
 443         if (!CreateDirectory (dir, NULL))
 444         {
 445                 ErrorMessage (GetLastError(), _T("MD"));
 446
 447                 freep (p);
 448                 return 1;
 449         }
 450
 451         freep (p);
 452
 453         return 0;
 454 }
 455 #endif
 456
 457
 458 #ifdef INCLUDE_CMD_RMDIR
 459 /*
 460  * RD / RMDIR
 461  *
 462  */
 463 INT cmd_rmdir (LPTSTR cmd, LPTSTR param)
 464 {
 465         LPTSTR dir;             /* pointer to the directory to change to */
 466         LPTSTR place;   /* used to search for the \ when no space is used */
 467
 468         LPTSTR *p = NULL;
 469         INT argc;
 470
 471         if (!_tcsncmp (param, _T("/?"), 2))
 472         {
 473                 ConOutResPaging(TRUE,STRING_RMDIR_HELP);
 474                 return 0;
 475         }
 476
 477         /* check if there is no space between the command and the path */
 478         if (param[0] == _T('\0'))
 479         {
 480                 /* search for the \ or . so that both short & long names will work */
 481                 for (place = cmd; *place; place++)
 482                         if (*place == _T('.') || *place == _T('\\'))
 483                                 break;
 484
 485                 if (*place)
 486                         dir = place;
 487                 else
 488                         /* signal that there are no parameters */
 489                         dir = NULL;
 490         }
 491         else
 492         {
 493                 p = split (param, &argc, FALSE);
 494                 if (argc > 1)
 495                 {
 496                         /*JPP 20-Jul-1998 use standard error message */
 497                         error_too_many_parameters (param);
 498                         freep (p);
 499                         return 1;
 500                 }
 501                 else
 502                         dir = p[0];
 503         }
 504
 505         if (!dir)
 506         {
 507                 ConErrResPuts(STRING_ERROR_REQ_PARAM_MISSING);
 508                 return 1;
 509         }
 510
 511         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 512         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 513                 dir[_tcslen(dir) - 1] = _T('\0');
 514
 515         if (!RemoveDirectory (dir))
 516         {
 517                 ErrorMessage (GetLastError(), _T("RD"));
 518                 freep (p);
 519
 520                 return 1;
 521         }
 522
 523         freep (p);
 524
 525         return 0;
 526 }
 527 #endif
 528
 529
 530 /*
 531  * set the exitflag to true
 532  *
 533  */
 534 INT CommandExit (LPTSTR cmd, LPTSTR param)
 535 {
 536         if (!_tcsncmp (param, _T("/?"), 2))
 537                 ConOutResPaging(TRUE,STRING_EXIT_HELP);
 538
 539         if (bc != NULL && _tcsnicmp(param,_T("/b"),2) == 0)
 540         {
 541                 param += 2;
 542                 while (_istspace (*param))
 543                         param++;
 544                 if (_istdigit(*param))
 545                         nErrorLevel = _ttoi(param);
 546                 ExitBatch (NULL);
 547         }
 548
 549         else
 550                 bExit = TRUE;
 551
 552
 553         return 0;
 554
 555 }
 556
 557 #ifdef INCLUDE_CMD_REM
 558 /*
 559  * does nothing
 560  *
 561  */
 562 INT CommandRem (LPTSTR cmd, LPTSTR param)
 563 {
 564         if (!_tcsncmp (param, _T("/?"), 2))
 565         {
 566                 ConOutResPaging(TRUE,STRING_REM_HELP);
 567         }
 568
 569         return 0;
 570 }
 571 #endif /* INCLUDE_CMD_REM */
 572
 573
 574 INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
 575 {
 576         PrintCommandList ();
 577         return 0;
 578 }
 579
 580 INT CommandShowCommandsDetail (LPTSTR cmd, LPTSTR param)
 581 {
 582         PrintCommandListDetail ();
 583         return 0;
 584 }
 585
 586 /* EOF */