src/filemanager/chmod.c

   1 /*
   2    Chmod command -- for the Midnight Commander
   3
   4    Copyright (C) 1994-2016
   5    Free Software Foundation, Inc.
   6
   7    This file is part of the Midnight Commander.
   8
   9    The Midnight Commander is free software: you can redistribute it
  10    and/or modify it under the terms of the GNU General Public License as
  11    published by the Free Software Foundation, either version 3 of the License,
  12    or (at your option) any later version.
  13
  14    The Midnight Commander is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 /** \file chmod.c
  24  *  \brief Source: chmod command
  25  */
  26
  27 #include <config.h>
  28
  29 #include <errno.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #include <unistd.h>
  33
  34 #include "lib/global.h"
  35
  36 #include "lib/tty/tty.h"
  37 #include "lib/skin.h"
  38 #include "lib/vfs/vfs.h"
  39 #include "lib/strutil.h"
  40 #include "lib/util.h"
  41 #include "lib/widget.h"
  42 #include "lib/keybind.h"        /* CK_Cancel */
  43
  44 #include "midnight.h"           /* current_panel */
  45 #include "chmod.h"
  46
  47 /*** global variables ****************************************************************************/
  48
  49 /*** file scope macro definitions ****************************************************************/
  50
  51 #define PX 3
  52 #define PY 2
  53
  54 #define B_MARKED B_USER
  55 #define B_ALL    (B_USER + 1)
  56 #define B_SETMRK (B_USER + 2)
  57 #define B_CLRMRK (B_USER + 3)
  58
  59 /*** file scope type declarations ****************************************************************/
  60
  61 /*** file scope variables ************************************************************************/
  62
  63 static gboolean single_set;
  64
  65 static gboolean mode_change, need_update, end_chmod;
  66 static int c_file;
  67
  68 static mode_t and_mask, or_mask, c_stat;
  69
  70 static WLabel *statl;
  71 static WGroupbox *file_gb;
  72
  73 static struct
  74 {
  75     mode_t mode;
  76     const char *text;
  77     gboolean selected;
  78     WCheck *check;
  79 } check_perm[] =
  80 {
  81     /* *INDENT-OFF* */
  82     { S_ISUID, N_("set &user ID on execution"), FALSE, NULL },
  83     { S_ISGID, N_("set &group ID on execution"), FALSE, NULL },
  84     { S_ISVTX, N_("stick&y bit"), FALSE, NULL },
  85     { S_IRUSR, N_("&read by owner"), FALSE, NULL },
  86     { S_IWUSR, N_("&write by owner"), FALSE, NULL },
  87     { S_IXUSR, N_("e&xecute/search by owner"), FALSE, NULL },
  88     { S_IRGRP, N_("rea&d by group"), FALSE, NULL },
  89     { S_IWGRP, N_("write by grou&p"), FALSE, NULL },
  90     { S_IXGRP, N_("execu&te/search by group"), FALSE, NULL },
  91     { S_IROTH, N_("read &by others"), FALSE, NULL },
  92     { S_IWOTH, N_("wr&ite by others"), FALSE, NULL },
  93     { S_IXOTH, N_("execute/searc&h by others"), FALSE, NULL }
  94     /* *INDENT-ON* */
  95 };
  96
  97 static const int check_perm_num = G_N_ELEMENTS (check_perm);
  98 static int check_perm_len = 0;
  99
 100 static const char *file_info_labels[] = {
 101     N_("Name:"),
 102     N_("Permissions (octal):"),
 103     N_("Owner name:"),
 104     N_("Group name:")
 105 };
 106
 107 static const int file_info_labels_num = G_N_ELEMENTS (file_info_labels);
 108 static int file_info_labels_len = 0;
 109
 110 static struct
 111 {
 112     int ret_cmd;
 113     button_flags_t flags;
 114     int y;                      /* vertical position relatively to dialog bottom boundary */
 115     int len;
 116     const char *text;
 117 } chmod_but[] =
 118 {
 119     /* *INDENT-OFF* */
 120     { B_ALL,    NORMAL_BUTTON, 6, 0, N_("Set &all") },
 121     { B_MARKED, NORMAL_BUTTON, 6, 0, N_("&Marked all") },
 122     { B_SETMRK, NORMAL_BUTTON, 5, 0, N_("S&et marked") },
 123     { B_CLRMRK, NORMAL_BUTTON, 5, 0, N_("C&lear marked") },
 124     { B_ENTER, DEFPUSH_BUTTON, 3, 0, N_("&Set") },
 125     { B_CANCEL, NORMAL_BUTTON, 3, 0, N_("&Cancel") }
 126     /* *INDENT-ON* */
 127 };
 128
 129 static const int chmod_but_num = G_N_ELEMENTS (chmod_but);
 130
 131 /* --------------------------------------------------------------------------------------------- */
 132 /*** file scope functions ************************************************************************/
 133 /* --------------------------------------------------------------------------------------------- */
 134
 135 static void
 136 chmod_i18n (void)
 137 {
 138     static gboolean i18n = FALSE;
 139     int i, len;
 140
 141     if (i18n)
 142         return;
 143
 144     i18n = TRUE;
 145
 146 #ifdef ENABLE_NLS
 147     for (i = 0; i < check_perm_num; i++)
 148         check_perm[i].text = _(check_perm[i].text);
 149
 150     for (i = 0; i < file_info_labels_num; i++)
 151         file_info_labels[i] = _(file_info_labels[i]);
 152
 153     for (i = 0; i < chmod_but_num; i++)
 154         chmod_but[i].text = _(chmod_but[i].text);
 155 #endif /* ENABLE_NLS */
 156
 157     for (i = 0; i < check_perm_num; i++)
 158     {
 159         len = str_term_width1 (check_perm[i].text);
 160         check_perm_len = MAX (check_perm_len, len);
 161     }
 162
 163     check_perm_len += 1 + 3 + 1;        /* mark, [x] and space */
 164
 165     for (i = 0; i < file_info_labels_num; i++)
 166     {
 167         len = str_term_width1 (file_info_labels[i]) + 2;        /* spaces around */
 168         file_info_labels_len = MAX (file_info_labels_len, len);
 169     }
 170
 171     for (i = 0; i < chmod_but_num; i++)
 172     {
 173         chmod_but[i].len = str_term_width1 (chmod_but[i].text) + 3;     /* [], spaces and w/o & */
 174         if (chmod_but[i].flags == DEFPUSH_BUTTON)
 175             chmod_but[i].len += 2;      /* <> */
 176     }
 177 }
 178
 179 /* --------------------------------------------------------------------------------------------- */
 180
 181 static void
 182 chmod_toggle_select (WDialog * h, int Id)
 183 {
 184     tty_setcolor (COLOR_NORMAL);
 185     check_perm[Id].selected = !check_perm[Id].selected;
 186
 187     widget_move (h, PY + Id + 1, PX + 1);
 188     tty_print_char (check_perm[Id].selected ? '*' : ' ');
 189     widget_move (h, PY + Id + 1, PX + 3);
 190 }
 191
 192 /* --------------------------------------------------------------------------------------------- */
 193
 194 static void
 195 chmod_refresh (WDialog * h)
 196 {
 197     int y = WIDGET (file_gb)->y + 1;
 198     int x = WIDGET (file_gb)->x + 2;
 199
 200     dlg_default_repaint (h);
 201
 202     tty_setcolor (COLOR_NORMAL);
 203
 204     tty_gotoyx (y, x);
 205     tty_print_string (file_info_labels[0]);
 206     tty_gotoyx (y + 2, x);
 207     tty_print_string (file_info_labels[1]);
 208     tty_gotoyx (y + 4, x);
 209     tty_print_string (file_info_labels[2]);
 210     tty_gotoyx (y + 6, x);
 211     tty_print_string (file_info_labels[3]);
 212 }
 213
 214 /* --------------------------------------------------------------------------------------------- */
 215
 216 static cb_ret_t
 217 chmod_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
 218 {
 219     WDialog *h = DIALOG (w);
 220
 221     switch (msg)
 222     {
 223     case MSG_NOTIFY:
 224         {
 225             /* handle checkboxes */
 226             int i;
 227
 228             /* whether notification was sent by checkbox? */
 229             for (i = 0; i < check_perm_num; i++)
 230                 if (sender == WIDGET (check_perm[i].check))
 231                     break;
 232
 233             if (i < check_perm_num && parm == (int) MSG_KEY)
 234             {
 235                 char buffer[BUF_TINY];
 236
 237                 c_stat ^= check_perm[i].mode;
 238                 g_snprintf (buffer, sizeof (buffer), "%o", (unsigned int) c_stat);
 239                 label_set_text (statl, buffer);
 240                 chmod_toggle_select (h, i);
 241                 mode_change = TRUE;
 242                 return MSG_HANDLED;
 243             }
 244         }
 245
 246         return MSG_NOT_HANDLED;
 247
 248     case MSG_KEY:
 249         if (parm == 'T' || parm == 't' || parm == KEY_IC)
 250         {
 251             int i;
 252             unsigned long id;
 253
 254             id = dlg_get_current_widget_id (h);
 255             for (i = 0; i < check_perm_num; i++)
 256                 if (id == WIDGET (check_perm[i].check)->id)
 257                     break;
 258
 259             if (i < check_perm_num)
 260             {
 261                 chmod_toggle_select (h, i);
 262                 if (parm == KEY_IC)
 263                     dlg_select_next_widget (h);
 264                 return MSG_HANDLED;
 265             }
 266         }
 267         return MSG_NOT_HANDLED;
 268
 269     case MSG_DRAW:
 270         chmod_refresh (h);
 271         return MSG_HANDLED;
 272
 273     default:
 274         return dlg_default_callback (w, sender, msg, parm, data);
 275     }
 276 }
 277
 278 /* --------------------------------------------------------------------------------------------- */
 279
 280 static WDialog *
 281 init_chmod (const char *fname, const struct stat *sf_stat)
 282 {
 283     WDialog *ch_dlg;
 284     int lines, cols;
 285     int i, y;
 286     int perm_gb_len;
 287     int file_gb_len;
 288     const char *c_fname, *c_fown, *c_fgrp;
 289     char buffer[BUF_TINY];
 290
 291     single_set = (current_panel->marked < 2);
 292     perm_gb_len = check_perm_len + 2;
 293     file_gb_len = file_info_labels_len + 2;
 294     cols = str_term_width1 (fname) + 2 + 1;
 295     file_gb_len = MAX (file_gb_len, cols);
 296
 297     lines = single_set ? 20 : 23;
 298     cols = perm_gb_len + file_gb_len + 1 + 6;
 299
 300     if (cols > COLS)
 301     {
 302         /* shrink the right groupbox */
 303         cols = COLS;
 304         file_gb_len = cols - (perm_gb_len + 1 + 6);
 305     }
 306
 307     ch_dlg =
 308         dlg_create (TRUE, 0, 0, lines, cols, WPOS_CENTER, FALSE, dialog_colors,
 309                     chmod_callback, NULL, "[Chmod]", _("Chmod command"));
 310
 311     add_widget (ch_dlg, groupbox_new (PY, PX, check_perm_num + 2, perm_gb_len, _("Permission")));
 312
 313     for (i = 0; i < check_perm_num; i++)
 314     {
 315         check_perm[i].check = check_new (PY + i + 1, PX + 2,
 316                                          (c_stat & check_perm[i].mode) != 0 ? 1 : 0,
 317                                          check_perm[i].text);
 318         add_widget (ch_dlg, check_perm[i].check);
 319     }
 320
 321     file_gb = groupbox_new (PY, PX + perm_gb_len + 1, check_perm_num + 2, file_gb_len, _("File"));
 322     add_widget (ch_dlg, file_gb);
 323
 324     /* Set the labels */
 325     y = PY + 2;
 326     cols = PX + perm_gb_len + 3;
 327     c_fname = str_trunc (fname, file_gb_len - 3);
 328     add_widget (ch_dlg, label_new (y, cols, c_fname));
 329     g_snprintf (buffer, sizeof (buffer), "%o", (unsigned int) c_stat);
 330     statl = label_new (y + 2, cols, buffer);
 331     add_widget (ch_dlg, statl);
 332     c_fown = str_trunc (get_owner (sf_stat->st_uid), file_gb_len - 3);
 333     add_widget (ch_dlg, label_new (y + 4, cols, c_fown));
 334     c_fgrp = str_trunc (get_group (sf_stat->st_gid), file_gb_len - 3);
 335     add_widget (ch_dlg, label_new (y + 6, cols, c_fgrp));
 336
 337     if (!single_set)
 338     {
 339         i = 0;
 340         add_widget (ch_dlg, hline_new (lines - chmod_but[i].y - 1, -1, -1));
 341         for (; i < chmod_but_num - 2; i++)
 342         {
 343             y = lines - chmod_but[i].y;
 344             add_widget (ch_dlg,
 345                         button_new (y, WIDGET (ch_dlg)->cols / 2 - chmod_but[i].len,
 346                                     chmod_but[i].ret_cmd, chmod_but[i].flags, chmod_but[i].text,
 347                                     NULL));
 348             i++;
 349             add_widget (ch_dlg,
 350                         button_new (y, WIDGET (ch_dlg)->cols / 2 + 1,
 351                                     chmod_but[i].ret_cmd, chmod_but[i].flags, chmod_but[i].text,
 352                                     NULL));
 353         }
 354     }
 355
 356     i = chmod_but_num - 2;
 357     y = lines - chmod_but[i].y;
 358     add_widget (ch_dlg, hline_new (y - 1, -1, -1));
 359     add_widget (ch_dlg,
 360                 button_new (y, WIDGET (ch_dlg)->cols / 2 - chmod_but[i].len, chmod_but[i].ret_cmd,
 361                             chmod_but[i].flags, chmod_but[i].text, NULL));
 362     i++;
 363     add_widget (ch_dlg,
 364                 button_new (y, WIDGET (ch_dlg)->cols / 2 + 1, chmod_but[i].ret_cmd,
 365                             chmod_but[i].flags, chmod_but[i].text, NULL));
 366
 367     /* select first checkbox */
 368     dlg_select_widget (check_perm[0].check);
 369
 370     return ch_dlg;
 371 }
 372
 373 /* --------------------------------------------------------------------------------------------- */
 374
 375 static void
 376 chmod_done (void)
 377 {
 378     if (need_update)
 379         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 380     repaint_screen ();
 381 }
 382
 383 /* --------------------------------------------------------------------------------------------- */
 384
 385 static char *
 386 next_file (void)
 387 {
 388     while (!current_panel->dir.list[c_file].f.marked)
 389         c_file++;
 390
 391     return current_panel->dir.list[c_file].fname;
 392 }
 393
 394 /* --------------------------------------------------------------------------------------------- */
 395
 396 static void
 397 do_chmod (struct stat *sf)
 398 {
 399     vfs_path_t *vpath;
 400     sf->st_mode &= and_mask;
 401     sf->st_mode |= or_mask;
 402
 403     vpath = vfs_path_from_str (current_panel->dir.list[c_file].fname);
 404     if (mc_chmod (vpath, sf->st_mode) == -1)
 405         message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 406                  current_panel->dir.list[c_file].fname, unix_error_string (errno));
 407
 408     vfs_path_free (vpath);
 409     do_file_mark (current_panel, c_file, 0);
 410 }
 411
 412 /* --------------------------------------------------------------------------------------------- */
 413
 414 static void
 415 apply_mask (struct stat *sf)
 416 {
 417     need_update = TRUE;
 418     end_chmod = TRUE;
 419
 420     do_chmod (sf);
 421
 422     do
 423     {
 424         char *fname;
 425         vfs_path_t *vpath;
 426         gboolean ok;
 427
 428         fname = next_file ();
 429         vpath = vfs_path_from_str (fname);
 430         ok = (mc_stat (vpath, sf) == 0);
 431         vfs_path_free (vpath);
 432         if (!ok)
 433             return;
 434
 435         c_stat = sf->st_mode;
 436
 437         do_chmod (sf);
 438     }
 439     while (current_panel->marked != 0);
 440 }
 441
 442 /* --------------------------------------------------------------------------------------------- */
 443 /*** public functions ****************************************************************************/
 444 /* --------------------------------------------------------------------------------------------- */
 445
 446 void
 447 chmod_cmd (void)
 448 {
 449     chmod_i18n ();
 450
 451     do
 452     {                           /* do while any files remaining */
 453         vfs_path_t *vpath;
 454         WDialog *ch_dlg;
 455         struct stat sf_stat;
 456         char *fname;
 457         int i, result;
 458
 459         do_refresh ();
 460
 461         mode_change = FALSE;
 462         need_update = FALSE;
 463         end_chmod = FALSE;
 464         c_file = 0;
 465
 466         if (current_panel->marked != 0)
 467             fname = next_file ();       /* next marked file */
 468         else
 469             fname = selection (current_panel)->fname;   /* single file */
 470
 471         vpath = vfs_path_from_str (fname);
 472
 473         if (mc_stat (vpath, &sf_stat) != 0)
 474         {
 475             vfs_path_free (vpath);
 476             break;
 477         }
 478
 479         c_stat = sf_stat.st_mode;
 480
 481         ch_dlg = init_chmod (fname, &sf_stat);
 482
 483         /* do action */
 484         result = dlg_run (ch_dlg);
 485
 486         switch (result)
 487         {
 488         case B_ENTER:
 489             if (mode_change && mc_chmod (vpath, c_stat) == -1)
 490                 message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 491                          fname, unix_error_string (errno));
 492             need_update = TRUE;
 493             break;
 494
 495         case B_CANCEL:
 496             end_chmod = TRUE;
 497             break;
 498
 499         case B_ALL:
 500         case B_MARKED:
 501             and_mask = or_mask = 0;
 502             and_mask = ~and_mask;
 503
 504             for (i = 0; i < check_perm_num; i++)
 505                 if (check_perm[i].selected || result == B_ALL)
 506                 {
 507                     if (check_perm[i].check->state & C_BOOL)
 508                         or_mask |= check_perm[i].mode;
 509                     else
 510                         and_mask &= ~check_perm[i].mode;
 511                 }
 512
 513             apply_mask (&sf_stat);
 514             break;
 515
 516         case B_SETMRK:
 517             and_mask = or_mask = 0;
 518             and_mask = ~and_mask;
 519
 520             for (i = 0; i < check_perm_num; i++)
 521                 if (check_perm[i].selected)
 522                     or_mask |= check_perm[i].mode;
 523
 524             apply_mask (&sf_stat);
 525             break;
 526
 527         case B_CLRMRK:
 528             and_mask = or_mask = 0;
 529             and_mask = ~and_mask;
 530
 531             for (i = 0; i < check_perm_num; i++)
 532                 if (check_perm[i].selected)
 533                     and_mask &= ~check_perm[i].mode;
 534
 535             apply_mask (&sf_stat);
 536             break;
 537
 538         default:
 539             break;
 540         }
 541
 542         if (current_panel->marked != 0 && result != B_CANCEL)
 543         {
 544             do_file_mark (current_panel, c_file, 0);
 545             need_update = TRUE;
 546         }
 547
 548         vfs_path_free (vpath);
 549
 550         dlg_destroy (ch_dlg);
 551     }
 552     while (current_panel->marked != 0 && !end_chmod);
 553
 554     chmod_done ();
 555 }
 556
 557 /* --------------------------------------------------------------------------------------------- */