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