cde/lib/tt/bin/shell/remover.C

   1 /*
   2  * CDE - Common Desktop Environment
   3  *
   4  * Copyright (c) 1993-2012, The Open Group. All rights reserved.
   5  *
   6  * These libraries and programs are free software; you can
   7  * redistribute them and/or modify them under the terms of the GNU
   8  * Lesser General Public License as published by the Free Software
   9  * Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * These libraries and programs are distributed in the hope that
  13  * they will be useful, but WITHOUT ANY WARRANTY; without even the
  14  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE. See the GNU Lesser General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with these libraries and programs; if not, write
  20  * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  21  * Floor, Boston, MA 02110-1301 USA
  22  */
  23 //%%  (c) Copyright 1993, 1994 Hewlett-Packard Company
  24 //%%  (c) Copyright 1993, 1994 International Business Machines Corp.
  25 //%%  (c) Copyright 1993, 1994 Sun Microsystems, Inc.
  26 //%%  (c) Copyright 1993, 1994 Novell, Inc.
  27 //%%  $TOG: remover.C /main/5 1999/10/14 18:37:42 mgreess $
  28 /*
  29  * remover.cc - ToolTalk wrapper for rm(1) and rmdir(1).
  30  *
  31  * Copyright (c) 1990 by Sun Microsystems, Inc.
  32  *
  33  */
  34
  35 #include "tt_options.h"
  36 #include <errno.h>
  37 #include <string.h>
  38 #if defined(linux) || defined(CSRG_BASED)
  39 #include <unistd.h>
  40 #else
  41 #if !defined(sun)
  42 #include <osfcn.h>
  43 #endif
  44 #endif
  45 #include <stdlib.h>
  46 #include <errno.h>
  47 #if defined(ultrix)
  48 #include <sys/inode.h>
  49 #define S_ISLNK(m)     (((m)&IFMT) == IFLNK)
  50 #endif
  51 #include <sys/stat.h>
  52 #include <sys/wait.h>
  53 #include "api/c/tt_c.h"
  54 #include "util/tt_path.h"
  55 #include "util/tt_gettext.h"
  56 #include "util/copyright.h"
  57 #include "remover.h"
  58
  59 /*
  60  * External variables
  61  */
  62
  63 /*
  64  * remover::remover()
  65  */
  66 remover::
  67 remover( char *arg0 )
  68 {
  69         if (arg0 != NULL) {
  70                 char *base = strrchr( arg0, '/' );
  71                 if (base == NULL) {
  72                         base = arg0;
  73                 } else {
  74                         base++;
  75                 }
  76                 _prog_name = base;
  77                 _process_name = _prog_name;
  78         }
  79         _am_rmdir = (_prog_name == "ttrmdir");
  80         _args = new _Tt_string_list();
  81         _paths = new _Tt_string_list();
  82         _should_rm = TRUE;
  83         _force = FALSE;
  84         _recurse = FALSE;
  85         _tt_opened = FALSE;
  86 }
  87
  88 remover::
  89 ~remover()
  90 {
  91 }
  92
  93 /*
  94  * remover::do_rm() - Invoke rm[dir](1), and return its exit status.
  95  *      We can just use _args, since we never get here when our one
  96  *      incompatible option (-L) has been given.
  97  */
  98 int remover::
  99 do_rm()
 100 {
 101         _Tt_string              cmd;
 102         _Tt_string_list_cursor  arg_cursor( _args );
 103
 104         if (_am_rmdir) {
 105                 cmd = "rmdir";
 106         } else {
 107                 cmd = "rm";
 108         }
 109         while (arg_cursor.next()) {
 110                 cmd = cmd.cat( " " ).cat( *arg_cursor );
 111         }
 112         //printf( "Invoking: %s\n", (char *)cmd );
 113         int sys_status = system( (char *)cmd );
 114         if (WIFEXITED(sys_status)) {
 115                 return WEXITSTATUS(sys_status);
 116         } else {
 117                 fprintf( stderr,
 118                          "%s: system(\"%s\"): %d\n",
 119                          (char *)_process_name, (char *)cmd, sys_status );
 120                 return 1;
 121         }
 122 }
 123
 124 /*
 125  * remover::do_ttrm() - Use tt_file_destroy() on the paths to destroy.
 126  */
 127 Tt_status remover::
 128 do_ttrm()
 129 {
 130         return this->_ttrm_paths( _paths );
 131 }
 132
 133 /*
 134  * remover::ttrm_path() - tt_file_destroy() this path.
 135  */
 136 Tt_status remover::
 137 _ttrm_paths( _Tt_string_list_ptr paths )
 138 {
 139         Tt_status       worst_err = TT_OK;
 140         Tt_status       err;
 141         bool_t          abort = FALSE;
 142
 143         while ((! paths->is_empty()) && (! abort)) {
 144                 _Tt_string              path     = paths->top();
 145                 _Tt_string_list_ptr     children;
 146
 147                 paths->pop();
 148                 if (! this->can_rm( path )) {
 149                         continue;
 150                 }
 151                 if (_recurse) {
 152                         _Tt_string_list_ptr children = _tt_dir_entries(path,
 153                                                                        FALSE);
 154                         err = this->_ttrm_paths( children );
 155                         if (err > TT_WRN_LAST) {
 156                                 switch (err) {
 157                                     case TT_ERR_DBAVAIL:
 158                                     case TT_ERR_PATH:
 159                                         break;
 160                                     case TT_ERR_NOMP:
 161                                     case TT_ERR_DBEXIST:
 162                                     default:
 163                                         abort = TRUE;
 164                                         break;
 165                                 }
 166                         }
 167                 }
 168                 if (! abort) {
 169                         err = tt_file_destroy( (char *)path );
 170                         if (err > TT_WRN_LAST) {
 171                                 worst_err = err;
 172                                 if (! _force) {
 173                                         fprintf( stderr,
 174                                                  catgets(_ttcatd, 8, 7,
 175                                                          "%s: Could not remove "
 176                                                          "ToolTalk objects of "
 177                                                          "%s because %s\n"),
 178                                                  (char *)_process_name,
 179                                                  (char *)path,
 180                                                  tt_status_message(err) );
 181                                 }
 182                                 switch (err) {
 183                                     case TT_ERR_DBAVAIL:
 184                                     case TT_ERR_PATH:
 185                                         break;
 186                                     case TT_ERR_NOMP:
 187                                     case TT_ERR_DBEXIST:
 188                                     default:
 189                                         abort = TRUE;
 190                                         break;
 191                                 }
 192                         }
 193                 }
 194         }
 195         return worst_err;
 196
 197 } /* ttrm_paths() */
 198
 199 /*
 200  * remover::can_rm() - Can we remove this path?
 201  *
 202  *      TO_DO: For now I'll count on tt_file_destroy() not to let me
 203  *      destroy the specs in files I can't remove.
 204  */
 205 bool_t remover::
 206 can_rm( _Tt_string path )
 207 {
 208         if (_am_rmdir) {
 209         } else {
 210                 if (! _recurse) {
 211                         struct stat lstat_buf;
 212
 213                         if (lstat( (char *)path, &lstat_buf) == 0) {
 214                                 if (S_ISDIR(lstat_buf.st_mode)) {
 215                                         /*
 216                                          * rm(1) without the -r flag
 217                                          * won't remove directories,
 218                                          * but tt_file_destroy() will,
 219                                          * so we make sure not to ask
 220                                          * it to.
 221                                          */
 222                                         if (! _force) {
 223                                                 fprintf( stderr, "%s: %s: %s\n",
 224                                                          (char *)_prog_name,
 225                                                          (char *)path,
 226                                                          strerror(EISDIR) );
 227                                         }
 228                                         return FALSE;
 229                                 } else if (S_ISLNK(lstat_buf.st_mode)) {
 230                                         /*
 231                                          * Don't tt_file_destroy() a symlink,
 232                                          * or TT will tt_file_destroy() the
 233                                          * linked file.
 234                                          */
 235                                         return FALSE;
 236                                 } else {
 237                                         return TRUE;
 238                                 }
 239                         } else {
 240                                 return FALSE;
 241                         }
 242                 }
 243         }
 244         return FALSE;
 245 }
 246
 247 /*
 248  * remover::open_tt()
 249  */
 250 Tt_status remover::
 251 open_tt()
 252 {
 253         char *process_id = tt_open();
 254         Tt_status err = tt_ptr_error( process_id );
 255         if (err == TT_OK) {
 256                 _process_id = process_id;
 257                 _tt_opened = TRUE;
 258         } else if (err > TT_WRN_LAST) {
 259                 fprintf( stderr,
 260                          "%s: tt_open(): %s\n",
 261                          (char *)_process_name, tt_status_message(err) );
 262         }
 263         return err;
 264 }
 265
 266 /*
 267  * remover::close_tt()
 268  */
 269 Tt_status remover::
 270 close_tt()
 271 {
 272         if (! _tt_opened) {
 273                 return TT_OK;
 274         }
 275         Tt_status err = tt_close();
 276         if (err > TT_WRN_LAST) {
 277                 fprintf( stderr,
 278                          "%s: tt_close(): %s\n",
 279                          (char *)_process_name, tt_status_message(err) );
 280         }
 281         return err;
 282 }
 283
 284 /*
 285  * remover::parse_args()
 286  */
 287 void remover::
 288 parse_args( int argc, char **argv )
 289 {
 290         bool_t no_more_options = FALSE;
 291
 292         for ( int arg_num = 1; arg_num < argc; arg_num++ ) {
 293                 _Tt_string arg( argv[arg_num] );
 294                 _args->append( arg );
 295                 if (_am_rmdir) {
 296                         if (arg[0] == '-') {
 297                                 this->_parse_arg( (char *)arg );
 298                         } else {
 299                                 _paths->append( arg );
 300                         }
 301                 } else {
 302                         if ((arg[0] != '-') || no_more_options) {
 303                                 _paths->append( arg );
 304                         } else {
 305                                 if (arg[1] == '\0') {
 306                                         /*
 307                                          * The bare option "-" means take the
 308                                          * subsequent arguments to be paths.
 309                                          */
 310                                         no_more_options = TRUE;
 311                                 } else {
 312                                         this->_parse_arg( (char *)arg );
 313                                 }
 314                         }
 315                 }
 316         }
 317         if (_paths->count() <= 0) {
 318                 this->usage();
 319                 exit(1);
 320         }
 321 }
 322
 323 /*
 324  * remover::_parse_arg() - Parse an option
 325  */
 326 void remover::
 327 _parse_arg( char *arg )
 328 {
 329         if (arg == NULL) {
 330                 return;
 331         }
 332         int n = -1;
 333         while (arg[++n] != '\0') {
 334                 switch (arg[n]) {
 335                     case '-':
 336                         if (n != 0) {
 337                                 this->usage();
 338                                 exit(1);
 339                         }
 340                         break;
 341                     case 'f':
 342                         if (_am_rmdir) {
 343                                 this->usage();
 344                                 exit(1);
 345                         } else {
 346                                 _force = TRUE;
 347                         }
 348                         break;
 349                     case 'r':
 350                     case 'R':
 351                         if (_am_rmdir) {
 352                                 this->usage();
 353                                 exit(1);
 354                         } else {
 355                                 _recurse = TRUE;
 356                         }
 357                         break;
 358                     case 'L':
 359                         _should_rm = FALSE;
 360                         break;
 361                     case 'v':
 362                         _TT_PRINT_VERSIONS((char *)_prog_name)
 363                         exit(0);
 364                         break;
 365                     case 'h':
 366                     default:
 367                         this->usage();
 368                         exit(1);
 369                 }
 370         }
 371 }
 372
 373 /*
 374  * remover::usage()
 375  */
 376 void remover::
 377 usage(FILE *fs) const
 378 {
 379         fprintf( fs,
 380                  catgets(_ttcatd, 8, 8,
 381                          "Usage: %s [-] [-%s] %s ...\n"
 382                          "       %s -v\n"
 383                          "       %s -h\n"),
 384                  (char *)_prog_name,
 385                  (_am_rmdir ? "L" : "fLrR"),
 386                  (_am_rmdir ? catgets(_ttcatd, 8, 9, "file")
 387                         : catgets(_ttcatd, 8, 10, "dir") ),
 388                  (char *)_prog_name, (char *)_prog_name );
 389         fprintf( fs,
 390                  catgets(_ttcatd, 8, 11,
 391                          "\t-L      do not perform a %s(1)\n"
 392                          "\t-v      print the version number and quit\n"
 393                          "\t-h[elp] print this message\n" ),
 394                  (_am_rmdir ? "rmdir" : "rm"));
 395 }