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 /*
 152  * CD / CHDIR
 153  *
 154  */
 155 INT cmd_chdir (LPTSTR cmd, LPTSTR param)
 156 {
 157         LPTSTR dir;             /* pointer to the directory to change to */
 158         LPTSTR lpOldPath;
 159         LPTSTR endofstring; /* pointer to the null character in the directory to change to */
 160         LPTSTR lastquote; /* pointer to the last quotation mark in the directory to change to */
 161         WCHAR szMsg[RC_STRING_MAX_SIZE];
 162
 163         /*Should we better declare a variable containing _tsclen(dir) ? It's used a few times,
 164           but on the other hand paths are generally not very long*/
 165
 166         if (!_tcsncmp (param, _T("/?"), 2))
 167         {
 168                 LoadString( GetModuleHandle(NULL), STRING_CD_HELP, (LPTSTR) szMsg,sizeof(szMsg));
 169         ConOutPuts (_T((LPTSTR)szMsg));
 170                 return 0;
 171         }
 172
 173         /* The whole param string is our parameter these days. The only thing we do is eliminating every quotation mark */
 174         /* Is it safe to change the characters param is pointing to? I presume it is, as there doesn't seem to be any
 175         post-processing of it after the function call (what would that accomplish?) */
 176
 177         dir=param;
 178         endofstring=dir+_tcslen(dir);
 179
 180         while ((lastquote = _tcsrchr(dir, _T('\"'))))
 181         {
 182                 endofstring--;
 183                 memmove(lastquote,lastquote+1,endofstring-lastquote);
 184                 *endofstring=_T('\0');
 185         }
 186
 187         /* if doing a CD and no parameters given, print out current directory */
 188         if (!dir || !dir[0])
 189         {
 190                 TCHAR szPath[MAX_PATH];
 191
 192                 GetCurrentDirectory (MAX_PATH, szPath);
 193
 194                 ConOutPuts (szPath);
 195
 196
 197                 return 0;
 198         }
 199
 200         if (dir && _tcslen (dir) == 1 && *dir == _T('-'))
 201         {
 202                 if (lpLastPath)
 203                         dir = lpLastPath;
 204                 else
 205                         return 0;
 206         }
 207         else if (dir && _tcslen (dir)==2 && dir[1] == _T(':'))
 208         {
 209                 TCHAR szRoot[3] = _T("A:");
 210                 TCHAR szPath[MAX_PATH];
 211
 212                 szRoot[0] = _totupper (dir[0]);
 213                 GetFullPathName (szRoot, MAX_PATH, szPath, NULL);
 214
 215                 /* PathRemoveBackslash */
 216                 if (_tcslen (szPath) > 3)
 217                 {
 218                         LPTSTR p = _tcsrchr (szPath, _T('\\'));
 219                         *p = _T('\0');
 220                 }
 221
 222                 ConOutPuts (szPath);
 223
 224
 225                 return 0;
 226         }
 227
 228         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 229         if (_tcslen (dir) > 3 && dir[_tcslen (dir) - 1] == _T('\\'))
 230                 dir[_tcslen(dir) - 1] = _T('\0');
 231
 232
 233         /* store current directory */
 234         lpOldPath = (LPTSTR)malloc (MAX_PATH * sizeof(TCHAR));
 235         GetCurrentDirectory (MAX_PATH, lpOldPath);
 236
 237         if (!SetCurrentDirectory (dir))
 238         {
 239                 //ErrorMessage (GetLastError(), _T("CD"));
 240                 ConOutFormatMessage(GetLastError());
 241
 242                 /* throw away current directory */
 243                 free (lpOldPath);
 244                 lpOldPath = NULL;
 245
 246                 return 1;
 247         }
 248         else
 249         {
 250                 GetCurrentDirectory(MAX_PATH, dir);
 251                 if (dir[0]!=lpOldPath[0])
 252                 {
 253                         SetCurrentDirectory(lpOldPath);
 254                         free(lpOldPath);
 255                 }
 256                 else
 257                 {
 258                         if (lpLastPath)
 259                                 free (lpLastPath);
 260                         lpLastPath = lpOldPath;
 261                 }
 262         }
 263
 264
 265         return 0;
 266 }
 267 #endif
 268
 269
 270
 271 #ifdef INCLUDE_CMD_MKDIR
 272 /*
 273  * MD / MKDIR
 274  *
 275  */
 276 INT cmd_mkdir (LPTSTR cmd, LPTSTR param)
 277 {
 278         LPTSTR dir;             /* pointer to the directory to change to */
 279         LPTSTR place;   /* used to search for the \ when no space is used */
 280         LPTSTR *p = NULL;
 281         INT argc;
 282     WCHAR szMsg[RC_STRING_MAX_SIZE];
 283
 284         if (!_tcsncmp (param, _T("/?"), 2))
 285         {
 286                 LoadString( GetModuleHandle(NULL), STRING_MKDIR_HELP, (LPTSTR) szMsg,sizeof(szMsg));
 287         ConOutPuts (_T((LPTSTR)szMsg));
 288
 289                 return 0;
 290         }
 291
 292
 293         /* check if there is no space between the command and the path */
 294         if (param[0] == _T('\0'))
 295         {
 296                 /* search for the \ or . so that both short & long names will work */
 297                 for (place = cmd; *place; place++)
 298                         if (*place == _T('.') || *place == _T('\\'))
 299                                 break;
 300
 301                 if (*place)
 302                         dir = place;
 303                 else
 304                         /* signal that there are no parameters */
 305                         dir = NULL;
 306         }
 307         else
 308         {
 309                 p = split (param, &argc, FALSE);
 310                 if (argc > 1)
 311                 {
 312                         /*JPP 20-Jul-1998 use standard error message */
 313                         error_too_many_parameters (param);
 314                         freep (p);
 315                         return 1;
 316                 }
 317                 else
 318                         dir = p[0];
 319         }
 320
 321         if (!dir)
 322         {
 323                 LoadString( GetModuleHandle(NULL), STRING_PARAM_ERROR, (LPTSTR) szMsg,sizeof(szMsg));
 324                 ConErrPrintf (_T((LPTSTR)szMsg));
 325                 return 1;
 326         }
 327
 328         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 329         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 330                 dir[_tcslen(dir) - 1] = _T('\0');
 331
 332         if (!CreateDirectory (dir, NULL))
 333         {
 334                 ErrorMessage (GetLastError(), _T("MD"));
 335
 336                 freep (p);
 337                 return 1;
 338         }
 339
 340         freep (p);
 341
 342         return 0;
 343 }
 344 #endif
 345
 346
 347 #ifdef INCLUDE_CMD_RMDIR
 348 /*
 349  * RD / RMDIR
 350  *
 351  */
 352 INT cmd_rmdir (LPTSTR cmd, LPTSTR param)
 353 {
 354         LPTSTR dir;             /* pointer to the directory to change to */
 355         LPTSTR place;   /* used to search for the \ when no space is used */
 356
 357         LPTSTR *p = NULL;
 358         INT argc;
 359
 360
 361     WCHAR szMsg[RC_STRING_MAX_SIZE];
 362
 363         if (!_tcsncmp (param, _T("/?"), 2))
 364         {
 365                 LoadString( GetModuleHandle(NULL), STRING_RMDIR_HELP, (LPTSTR) szMsg,sizeof(szMsg));
 366
 367                 ConOutPuts (_T((LPTSTR)szMsg));
 368
 369                 return 0;
 370         }
 371
 372         /* check if there is no space between the command and the path */
 373         if (param[0] == _T('\0'))
 374         {
 375                 /* search for the \ or . so that both short & long names will work */
 376                 for (place = cmd; *place; place++)
 377                         if (*place == _T('.') || *place == _T('\\'))
 378                                 break;
 379
 380                 if (*place)
 381                         dir = place;
 382                 else
 383                         /* signal that there are no parameters */
 384                         dir = NULL;
 385         }
 386         else
 387         {
 388                 p = split (param, &argc, FALSE);
 389                 if (argc > 1)
 390                 {
 391                         /*JPP 20-Jul-1998 use standard error message */
 392                         error_too_many_parameters (param);
 393                         freep (p);
 394                         return 1;
 395                 }
 396                 else
 397                         dir = p[0];
 398         }
 399
 400         if (!dir)
 401         {
 402                 LoadString( GetModuleHandle(NULL), STRING_PARAM_ERROR, (LPTSTR) szMsg,sizeof(szMsg));
 403                 ConErrPrintf (_T((LPTSTR)szMsg));
 404
 405                 return 1;
 406         }
 407
 408         /* remove trailing \ if any, but ONLY if dir is not the root dir */
 409         if (_tcslen (dir) >= 2 && dir[_tcslen (dir) - 1] == _T('\\'))
 410                 dir[_tcslen(dir) - 1] = _T('\0');
 411
 412         if (!RemoveDirectory (dir))
 413         {
 414                 ErrorMessage (GetLastError(), _T("RD"));
 415                 freep (p);
 416
 417                 return 1;
 418         }
 419
 420         freep (p);
 421
 422         return 0;
 423 }
 424 #endif
 425
 426
 427 /*
 428  * set the exitflag to true
 429  *
 430  */
 431 INT CommandExit (LPTSTR cmd, LPTSTR param)
 432 {
 433         WCHAR szMsg[RC_STRING_MAX_SIZE];
 434
 435         if (!_tcsncmp (param, _T("/?"), 2))
 436         {
 437                 LoadString( GetModuleHandle(NULL), STRING_EXIT_HELP, (LPTSTR) szMsg,sizeof(szMsg));
 438         ConOutPuts (_T((LPTSTR)szMsg));
 439                 return 0;
 440         }
 441
 442         bExit = TRUE;
 443         return 0;
 444 }
 445
 446
 447 #ifdef INCLUDE_CMD_REM
 448 /*
 449  * does nothing
 450  *
 451  */
 452 INT CommandRem (LPTSTR cmd, LPTSTR param)
 453 {
 454         WCHAR szMsg[RC_STRING_MAX_SIZE];
 455
 456         if (!_tcsncmp (param, _T("/?"), 2))
 457         {
 458           LoadString( GetModuleHandle(NULL), STRING_REM_HELP, (LPTSTR) szMsg,sizeof(szMsg));
 459       ConOutPuts (_T((LPTSTR)szMsg));
 460         }
 461
 462         return 0;
 463 }
 464 #endif /* INCLUDE_CMD_REM */
 465
 466
 467 INT CommandShowCommands (LPTSTR cmd, LPTSTR param)
 468 {
 469         PrintCommandList ();
 470         return 0;
 471 }
 472
 473 /* EOF */