src/filemanager/chmod.c

   1 /*
   2    Chmod command -- for the Midnight Commander
   3
   4    Copyright (C) 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
   5    2008, 2009, 2010, 2011
   6    The Free Software Foundation, Inc.
   7
   8    This file is part of the Midnight Commander.
   9
  10    The Midnight Commander is free software: you can redistribute it
  11    and/or modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation, either version 3 of the License,
  13    or (at your option) any later version.
  14
  15    The Midnight Commander is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  */
  23
  24 /** \file chmod.c
  25  *  \brief Source: chmod command
  26  */
  27
  28 #include <config.h>
  29
  30 #include <errno.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <unistd.h>
  34
  35 #include "lib/global.h"
  36
  37 #include "lib/tty/tty.h"
  38 #include "lib/skin.h"
  39 #include "lib/vfs/vfs.h"
  40 #include "lib/strutil.h"
  41 #include "lib/util.h"
  42 #include "lib/widget.h"
  43 #include "lib/keybind.h"        /* CK_Cancel */
  44
  45 #include "midnight.h"           /* current_panel */
  46 #include "chmod.h"
  47
  48 /*** global variables ****************************************************************************/
  49
  50 /*** file scope macro definitions ****************************************************************/
  51
  52 #define PX 3
  53 #define PY 2
  54
  55 #define B_MARKED B_USER
  56 #define B_ALL    (B_USER + 1)
  57 #define B_SETMRK (B_USER + 2)
  58 #define B_CLRMRK (B_USER + 3)
  59
  60 /*** file scope type declarations ****************************************************************/
  61
  62 /*** file scope variables ************************************************************************/
  63
  64 static gboolean single_set;
  65
  66 static gboolean mode_change, need_update, end_chmod;
  67 static int c_file;
  68
  69 static mode_t and_mask, or_mask, c_stat;
  70
  71 static WLabel *statl;
  72 static WGroupbox *file_gb;
  73
  74 static struct
  75 {
  76     mode_t mode;
  77     const char *text;
  78     gboolean selected;
  79     WCheck *check;
  80 } check_perm[] =
  81 {
  82     /* *INDENT-OFF* */
  83     { S_ISUID, N_("set &user ID on execution"), FALSE, NULL },
  84     { S_ISGID, N_("set &group ID on execution"), FALSE, NULL },
  85     { S_ISVTX, N_("stick&y bit"), FALSE, NULL },
  86     { S_IRUSR, N_("&read by owner"), FALSE, NULL },
  87     { S_IWUSR, N_("&write by owner"), FALSE, NULL },
  88     { S_IXUSR, N_("e&xecute/search by owner"), FALSE, NULL },
  89     { S_IRGRP, N_("rea&d by group"), FALSE, NULL },
  90     { S_IWGRP, N_("write by grou&p"), FALSE, NULL },
  91     { S_IXGRP, N_("execu&te/search by group"), FALSE, NULL },
  92     { S_IROTH, N_("read &by others"), FALSE, NULL },
  93     { S_IWOTH, N_("wr&ite by others"), FALSE, NULL },
  94     { S_IXOTH, N_("execute/searc&h by others"), FALSE, NULL }
  95     /* *INDENT-ON* */
  96 };
  97
  98 static const unsigned int check_perm_num = G_N_ELEMENTS (check_perm);
  99 static int check_perm_len = 0;
 100
 101 static const char *file_info_labels[] = {
 102     N_("Name:"),
 103     N_("Permissions (octal):"),
 104     N_("Owner name:"),
 105     N_("Group name:")
 106 };
 107
 108 static const unsigned int file_info_labels_num = G_N_ELEMENTS (file_info_labels);
 109 static int file_info_labels_len = 0;
 110
 111 static struct
 112 {
 113     int ret_cmd;
 114     int flags;
 115     int y;                      /* vertical position relatively to dialog bottom boundary */
 116     int len;
 117     const char *text;
 118 } chmod_but[] =
 119 {
 120     /* *INDENT-OFF* */
 121     { B_ALL,    NORMAL_BUTTON, 6, 0, N_("Set &all") },
 122     { B_MARKED, NORMAL_BUTTON, 6, 0, N_("&Marked all") },
 123     { B_SETMRK, NORMAL_BUTTON, 5, 0, N_("S&et marked") },
 124     { B_CLRMRK, NORMAL_BUTTON, 5, 0, N_("C&lear marked") },
 125     { B_ENTER, DEFPUSH_BUTTON, 3, 0, N_("&Set") },
 126     { B_CANCEL, NORMAL_BUTTON, 3, 0, N_("&Cancel") }
 127     /* *INDENT-ON* */
 128 };
 129
 130 static const unsigned int chmod_but_num = G_N_ELEMENTS (chmod_but);
 131
 132 /* --------------------------------------------------------------------------------------------- */
 133 /*** file scope functions ************************************************************************/
 134 /* --------------------------------------------------------------------------------------------- */
 135
 136 static void
 137 chmod_i18n (void)
 138 {
 139     static gboolean i18n = FALSE;
 140     unsigned int i;
 141     int len;
 142
 143     if (i18n)
 144         return;
 145
 146     i18n = TRUE;
 147
 148 #ifdef ENABLE_NLS
 149     for (i = 0; i < check_perm_num; i++)
 150         check_perm[i].text = _(check_perm[i].text);
 151
 152     for (i = 0; i < file_info_labels_num; i++)
 153         file_info_labels[i] = _(file_info_labels[i]);
 154
 155     for (i = 0; i < chmod_but_num; i++)
 156         chmod_but[i].text = _(chmod_but[i].text);
 157 #endif /* ENABLE_NLS */
 158
 159     for (i = 0; i < check_perm_num; i++)
 160     {
 161         len = str_term_width1 (check_perm[i].text);
 162         check_perm_len = max (check_perm_len, len);
 163     }
 164
 165     check_perm_len += 1 + 3 + 1;        /* mark, [x] and space */
 166
 167     for (i = 0; i < file_info_labels_num; i++)
 168     {
 169         len = str_term_width1 (file_info_labels[i]) + 2;        /* spaces around */
 170         file_info_labels_len = max (file_info_labels_len, len);
 171     }
 172
 173     for (i = 0; i < chmod_but_num; i++)
 174     {
 175         chmod_but[i].len = str_term_width1 (chmod_but[i].text) + 3;     /* [], spaces and w/o & */
 176         if (chmod_but[i].flags == DEFPUSH_BUTTON)
 177             chmod_but[i].len += 2;      /* <> */
 178     }
 179 }
 180
 181 /* --------------------------------------------------------------------------------------------- */
 182
 183 static void
 184 chmod_toggle_select (WDialog * h, int Id)
 185 {
 186     tty_setcolor (COLOR_NORMAL);
 187     check_perm[Id].selected = !check_perm[Id].selected;
 188
 189     widget_move (h, PY + Id + 1, PX + 1);
 190     tty_print_char (check_perm[Id].selected ? '*' : ' ');
 191     widget_move (h, PY + Id + 1, PX + 3);
 192 }
 193
 194 /* --------------------------------------------------------------------------------------------- */
 195
 196 static void
 197 chmod_refresh (WDialog * h)
 198 {
 199     int y = WIDGET (file_gb)->y + 1;
 200     int x = WIDGET (file_gb)->x + 2;
 201
 202     dlg_default_repaint (h);
 203
 204     tty_setcolor (COLOR_NORMAL);
 205
 206     tty_gotoyx (y, x);
 207     tty_print_string (file_info_labels[0]);
 208     tty_gotoyx (y + 2, x);
 209     tty_print_string (file_info_labels[1]);
 210     tty_gotoyx (y + 4, x);
 211     tty_print_string (file_info_labels[2]);
 212     tty_gotoyx (y + 6, x);
 213     tty_print_string (file_info_labels[3]);
 214 }
 215
 216 /* --------------------------------------------------------------------------------------------- */
 217
 218 static cb_ret_t
 219 chmod_callback (WDialog * h, Widget * sender, dlg_msg_t msg, int parm, void *data)
 220 {
 221     switch (msg)
 222     {
 223     case DLG_ACTION:
 224         {
 225             /* handle checkboxes */
 226             unsigned int i;
 227
 228             /* close dialog due to SIGINT (ctrl-g) */
 229             if (sender == NULL && parm == CK_Cancel)
 230                 return MSG_NOT_HANDLED;
 231
 232             /* whether action was sent by checkbox? */
 233             for (i = 0; i < check_perm_num; i++)
 234                 if (sender == WIDGET (check_perm[i].check))
 235                     break;
 236
 237             if (i < check_perm_num)
 238             {
 239                 char buffer[BUF_TINY];
 240
 241                 c_stat ^= check_perm[i].mode;
 242                 g_snprintf (buffer, sizeof (buffer), "%o", (unsigned int) c_stat);
 243                 label_set_text (statl, buffer);
 244                 chmod_toggle_select (h, i);
 245                 mode_change = TRUE;
 246                 return MSG_HANDLED;
 247             }
 248         }
 249
 250         return MSG_NOT_HANDLED;
 251
 252     case DLG_KEY:
 253         if (parm == 'T' || parm == 't' || parm == KEY_IC)
 254         {
 255             unsigned int i;
 256             unsigned long id;
 257
 258             id = dlg_get_current_widget_id (h);
 259             for (i = 0; i < check_perm_num; i++)
 260                 if (id == WIDGET (check_perm[i].check)->id)
 261                     break;
 262
 263             if (i < check_perm_num)
 264             {
 265                 chmod_toggle_select (h, i);
 266                 if (parm == KEY_IC)
 267                     dlg_one_down (h);
 268                 return MSG_HANDLED;
 269             }
 270         }
 271         return MSG_NOT_HANDLED;
 272
 273     case DLG_DRAW:
 274         chmod_refresh (h);
 275         return MSG_HANDLED;
 276
 277     default:
 278         return dlg_default_callback (h, sender, msg, parm, data);
 279     }
 280 }
 281
 282 /* --------------------------------------------------------------------------------------------- */
 283
 284 static WDialog *
 285 init_chmod (const char *fname, const struct stat *sf_stat)
 286 {
 287     WDialog *ch_dlg;
 288     int lines, cols;
 289     int y;
 290     int perm_gb_len;
 291     int file_gb_len;
 292     unsigned int i;
 293     const char *c_fname, *c_fown, *c_fgrp;
 294     char buffer[BUF_TINY];
 295
 296     single_set = (current_panel->marked < 2);
 297     perm_gb_len = check_perm_len + 2;
 298     file_gb_len = file_info_labels_len + 2;
 299     cols = str_term_width1 (fname) + 2 + 1;
 300     file_gb_len = max (file_gb_len, cols);
 301
 302     lines = single_set ? 20 : 23;
 303     cols = perm_gb_len + file_gb_len + 1 + 6;
 304
 305     if (cols > COLS)
 306     {
 307         /* shrink the right groupbox */
 308         cols = COLS;
 309         file_gb_len = cols - (perm_gb_len + 1 + 6);
 310     }
 311
 312     ch_dlg =
 313         create_dlg (TRUE, 0, 0, lines, cols, dialog_colors,
 314                     chmod_callback, NULL, "[Chmod]", _("Chmod command"), DLG_CENTER);
 315
 316     add_widget (ch_dlg, groupbox_new (PY, PX, check_perm_num + 2, perm_gb_len, _("Permission")));
 317
 318     for (i = 0; i < check_perm_num; i++)
 319     {
 320         check_perm[i].check = check_new (PY + i + 1, PX + 2,
 321                                          (c_stat & check_perm[i].mode) != 0 ? 1 : 0,
 322                                          check_perm[i].text);
 323         add_widget (ch_dlg, check_perm[i].check);
 324     }
 325
 326     file_gb = groupbox_new (PY, PX + perm_gb_len + 1, check_perm_num + 2, file_gb_len, _("File"));
 327     add_widget (ch_dlg, file_gb);
 328
 329     /* Set the labels */
 330     y = PY + 2;
 331     cols = PX + perm_gb_len + 3;
 332     c_fname = str_trunc (fname, file_gb_len - 3);
 333     add_widget (ch_dlg, label_new (y, cols, c_fname));
 334     g_snprintf (buffer, sizeof (buffer), "%o", (unsigned int) c_stat);
 335     statl = label_new (y + 2, cols, buffer);
 336     add_widget (ch_dlg, statl);
 337     c_fown = str_trunc (get_owner (sf_stat->st_uid), file_gb_len - 3);
 338     add_widget (ch_dlg, label_new (y + 4, cols, c_fown));
 339     c_fgrp = str_trunc (get_group (sf_stat->st_gid), file_gb_len - 3);
 340     add_widget (ch_dlg, label_new (y + 6, cols, c_fgrp));
 341
 342     if (!single_set)
 343     {
 344         i = 0;
 345         add_widget (ch_dlg, hline_new (lines - chmod_but[i].y - 1, -1, -1));
 346         for (; i < chmod_but_num - 2; i++)
 347         {
 348             y = lines - chmod_but[i].y;
 349             add_widget (ch_dlg,
 350                         button_new (y, WIDGET (ch_dlg)->cols / 2 - chmod_but[i].len,
 351                                     chmod_but[i].ret_cmd, chmod_but[i].flags, chmod_but[i].text,
 352                                     NULL));
 353             i++;
 354             add_widget (ch_dlg,
 355                         button_new (y, WIDGET (ch_dlg)->cols / 2 + 1,
 356                                     chmod_but[i].ret_cmd, chmod_but[i].flags, chmod_but[i].text,
 357                                     NULL));
 358         }
 359     }
 360
 361     i = chmod_but_num - 2;
 362     y = lines - chmod_but[i].y;
 363     add_widget (ch_dlg, hline_new (y - 1, -1, -1));
 364     add_widget (ch_dlg,
 365                 button_new (y, WIDGET (ch_dlg)->cols / 2 - chmod_but[i].len, chmod_but[i].ret_cmd,
 366                             chmod_but[i].flags, chmod_but[i].text, NULL));
 367     i++;
 368     add_widget (ch_dlg,
 369                 button_new (y, WIDGET (ch_dlg)->cols / 2 + 1, chmod_but[i].ret_cmd,
 370                             chmod_but[i].flags, chmod_but[i].text, NULL));
 371
 372     /* select first checkbox */
 373     dlg_select_widget (check_perm[0].check);
 374
 375     return ch_dlg;
 376 }
 377
 378 /* --------------------------------------------------------------------------------------------- */
 379
 380 static void
 381 chmod_done (void)
 382 {
 383     if (need_update)
 384         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 385     repaint_screen ();
 386 }
 387
 388 /* --------------------------------------------------------------------------------------------- */
 389
 390 static char *
 391 next_file (void)
 392 {
 393     while (!current_panel->dir.list[c_file].f.marked)
 394         c_file++;
 395
 396     return current_panel->dir.list[c_file].fname;
 397 }
 398
 399 /* --------------------------------------------------------------------------------------------- */
 400
 401 static void
 402 do_chmod (struct stat *sf)
 403 {
 404     vfs_path_t *vpath;
 405     sf->st_mode &= and_mask;
 406     sf->st_mode |= or_mask;
 407
 408     vpath = vfs_path_from_str (current_panel->dir.list[c_file].fname);
 409     if (mc_chmod (vpath, sf->st_mode) == -1)
 410         message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 411                  current_panel->dir.list[c_file].fname, unix_error_string (errno));
 412
 413     vfs_path_free (vpath);
 414     do_file_mark (current_panel, c_file, 0);
 415 }
 416
 417 /* --------------------------------------------------------------------------------------------- */
 418
 419 static void
 420 apply_mask (struct stat *sf)
 421 {
 422     need_update = TRUE;
 423     end_chmod = TRUE;
 424
 425     do_chmod (sf);
 426
 427     do
 428     {
 429         char *fname;
 430         vfs_path_t *vpath;
 431         gboolean ok;
 432
 433         fname = next_file ();
 434         vpath = vfs_path_from_str (fname);
 435         ok = (mc_stat (vpath, sf) == 0);
 436         vfs_path_free (vpath);
 437         if (!ok)
 438             return;
 439
 440         c_stat = sf->st_mode;
 441
 442         do_chmod (sf);
 443     }
 444     while (current_panel->marked != 0);
 445 }
 446
 447 /* --------------------------------------------------------------------------------------------- */
 448 /*** public functions ****************************************************************************/
 449 /* --------------------------------------------------------------------------------------------- */
 450
 451 void
 452 chmod_cmd (void)
 453 {
 454     chmod_i18n ();
 455
 456     do
 457     {                           /* do while any files remaining */
 458         vfs_path_t *vpath;
 459         WDialog *ch_dlg;
 460         struct stat sf_stat;
 461         char *fname;
 462         int result;
 463         unsigned int i;
 464
 465         do_refresh ();
 466
 467         mode_change = FALSE;
 468         need_update = FALSE;
 469         end_chmod = FALSE;
 470         c_file = 0;
 471
 472         if (current_panel->marked != 0)
 473             fname = next_file ();       /* next marked file */
 474         else
 475             fname = selection (current_panel)->fname;   /* single file */
 476
 477         vpath = vfs_path_from_str (fname);
 478
 479         if (mc_stat (vpath, &sf_stat) != 0)
 480         {
 481             vfs_path_free (vpath);
 482             break;
 483         }
 484
 485         c_stat = sf_stat.st_mode;
 486
 487         ch_dlg = init_chmod (fname, &sf_stat);
 488
 489         /* do action */
 490         result = run_dlg (ch_dlg);
 491
 492         switch (result)
 493         {
 494         case B_ENTER:
 495             if (mode_change && mc_chmod (vpath, c_stat) == -1)
 496                 message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 497                          fname, unix_error_string (errno));
 498             need_update = TRUE;
 499             break;
 500
 501         case B_CANCEL:
 502             end_chmod = TRUE;
 503             break;
 504
 505         case B_ALL:
 506         case B_MARKED:
 507             and_mask = or_mask = 0;
 508             and_mask = ~and_mask;
 509
 510             for (i = 0; i < check_perm_num; i++)
 511                 if (check_perm[i].selected || result == B_ALL)
 512                 {
 513                     if (check_perm[i].check->state & C_BOOL)
 514                         or_mask |= check_perm[i].mode;
 515                     else
 516                         and_mask &= ~check_perm[i].mode;
 517                 }
 518
 519             apply_mask (&sf_stat);
 520             break;
 521
 522         case B_SETMRK:
 523             and_mask = or_mask = 0;
 524             and_mask = ~and_mask;
 525
 526             for (i = 0; i < check_perm_num; i++)
 527                 if (check_perm[i].selected)
 528                     or_mask |= check_perm[i].mode;
 529
 530             apply_mask (&sf_stat);
 531             break;
 532
 533         case B_CLRMRK:
 534             and_mask = or_mask = 0;
 535             and_mask = ~and_mask;
 536
 537             for (i = 0; i < check_perm_num; i++)
 538                 if (check_perm[i].selected)
 539                     and_mask &= ~check_perm[i].mode;
 540
 541             apply_mask (&sf_stat);
 542             break;
 543         }
 544
 545         if (current_panel->marked != 0 && result != B_CANCEL)
 546         {
 547             do_file_mark (current_panel, c_file, 0);
 548             need_update = TRUE;
 549         }
 550
 551         vfs_path_free (vpath);
 552
 553         destroy_dlg (ch_dlg);
 554     }
 555     while (current_panel->marked != 0 && !end_chmod);
 556
 557     chmod_done ();
 558 }
 559
 560 /* --------------------------------------------------------------------------------------------- */