src/chmod.c

   1 /* Chmod command -- for the Midnight Commander
   2    Copyright (C) 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
   3    Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 /** \file chmod.c
  21  *  \brief Source: chmod command
  22  */
  23
  24 #include <config.h>
  25
  26 #include <errno.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  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/mc-vfs/vfs.h"
  39 #include "lib/strutil.h"
  40
  41 #include "dialog.h"             /* add_widget() */
  42 #include "widget.h"             /* NORMAL_BUTTON */
  43 #include "wtools.h"             /* message() */
  44 #include "panel.h"              /* do_file_mark() */
  45 #include "main.h"               /* update_panels() */
  46 #include "layout.h"             /* repaint_screen() */
  47 #include "chmod.h"
  48
  49 static int single_set;
  50
  51 #define PX 5
  52 #define PY 2
  53
  54 #define FX 40
  55 #define FY 2
  56
  57 #define BX 6
  58 #define BY 17
  59
  60 #define TX 40
  61 #define TY 12
  62
  63 #define PERMISSIONS 12
  64 #define BUTTONS 6
  65
  66 #define B_MARKED B_USER
  67 #define B_ALL    (B_USER+1)
  68 #define B_SETMRK (B_USER+2)
  69 #define B_CLRMRK (B_USER+3)
  70
  71 static int mode_change, need_update;
  72 static int c_file, end_chmod;
  73
  74 static mode_t and_mask, or_mask, c_stat;
  75
  76 /* FIXME: these variables are superfluous, aren't they? (hint: name_trunc
  77  * returns a pointer to a static buffer, and label_new creates its own copy
  78  * of its argument)
  79  * --rillig, 2004-08-29 */
  80 static const char *c_fname, *c_fown, *c_fgrp;
  81
  82 static WLabel *statl;
  83
  84 static struct
  85 {
  86     mode_t mode;
  87     const char *text;
  88     int selected;
  89     WCheck *check;
  90 } check_perm[PERMISSIONS] =
  91 {
  92     /* *INDENT-OFF* */
  93     { S_IXOTH, N_("execute/search by others"), 0, 0 },
  94     { S_IWOTH, N_("write by others"), 0, 0 },
  95     { S_IROTH, N_("read by others"), 0, 0 },
  96     { S_IXGRP, N_("execute/search by group"), 0, 0 },
  97     { S_IWGRP, N_("write by group"), 0, 0 },
  98     { S_IRGRP, N_("read by group"), 0, 0 },
  99     { S_IXUSR, N_("execute/search by owner"), 0, 0 },
 100     { S_IWUSR, N_("write by owner"), 0, 0 },
 101     { S_IRUSR, N_("read by owner"), 0, 0 },
 102     { S_ISVTX, N_("sticky bit"), 0, 0 },
 103     { S_ISGID, N_("set group ID on execution"), 0, 0 },
 104     { S_ISUID, N_("set user ID on execution"), 0, 0 }
 105     /* *INDENT-ON* */
 106 };
 107
 108 static struct
 109 {
 110     int ret_cmd, flags, y, x;
 111     const char *text;
 112 } chmod_but[BUTTONS] =
 113 {
 114     /* *INDENT-OFF* */
 115     { B_CANCEL, NORMAL_BUTTON, 2, 33, N_("&Cancel") },
 116     { B_ENTER, DEFPUSH_BUTTON, 2, 17, N_("&Set") },
 117     { B_CLRMRK, NORMAL_BUTTON, 0, 42, N_("C&lear marked") },
 118     { B_SETMRK, NORMAL_BUTTON, 0, 27, N_("S&et marked") },
 119     { B_MARKED, NORMAL_BUTTON, 0, 12, N_("&Marked all") },
 120     { B_ALL,    NORMAL_BUTTON, 0, 0, N_("Set &all") }
 121     /* *INDENT-ON* */
 122 };
 123
 124 static void
 125 chmod_toggle_select (Dlg_head * h, int Id)
 126 {
 127     tty_setcolor (COLOR_NORMAL);
 128     check_perm[Id].selected ^= 1;
 129
 130     dlg_move (h, PY + PERMISSIONS - Id, PX + 1);
 131     tty_print_char ((check_perm[Id].selected) ? '*' : ' ');
 132     dlg_move (h, PY + PERMISSIONS - Id, PX + 3);
 133 }
 134
 135 static void
 136 chmod_refresh (Dlg_head * h)
 137 {
 138     common_dialog_repaint (h);
 139
 140     tty_setcolor (COLOR_NORMAL);
 141
 142     dlg_move (h, FY + 1, FX + 2);
 143     tty_print_string (_("Name"));
 144     dlg_move (h, FY + 3, FX + 2);
 145     tty_print_string (_("Permissions (Octal)"));
 146     dlg_move (h, FY + 5, FX + 2);
 147     tty_print_string (_("Owner name"));
 148     dlg_move (h, FY + 7, FX + 2);
 149     tty_print_string (_("Group name"));
 150
 151     dlg_move (h, TY, TX);
 152     tty_print_string (_("Use SPACE to change"));
 153     dlg_move (h, TY + 1, TX);
 154     tty_print_string (_("an option, ARROW KEYS"));
 155     dlg_move (h, TY + 2, TX);
 156     tty_print_string (_("to move between options"));
 157     dlg_move (h, TY + 3, TX);
 158     tty_print_string (_("and T or INS to mark"));
 159 }
 160
 161 static cb_ret_t
 162 chmod_callback (Dlg_head * h, Widget * sender, dlg_msg_t msg, int parm, void *data)
 163 {
 164     char buffer[BUF_TINY];
 165     int id = dlg_get_current_widget_id (h) - BUTTONS + single_set * 2 - 1;
 166
 167     switch (msg)
 168     {
 169     case DLG_ACTION:
 170         if (id >= 0)
 171         {
 172             c_stat ^= check_perm[id].mode;
 173             g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 174             label_set_text (statl, buffer);
 175             chmod_toggle_select (h, id);
 176             mode_change = 1;
 177         }
 178         return MSG_HANDLED;
 179
 180     case DLG_KEY:
 181         if ((parm == 'T' || parm == 't' || parm == KEY_IC) && id > 0)
 182         {
 183             chmod_toggle_select (h, id);
 184             if (parm == KEY_IC)
 185                 dlg_one_down (h);
 186             return MSG_HANDLED;
 187         }
 188         return MSG_NOT_HANDLED;
 189
 190     case DLG_DRAW:
 191         chmod_refresh (h);
 192         return MSG_HANDLED;
 193
 194     default:
 195         return default_dlg_callback (h, sender, msg, parm, data);
 196     }
 197 }
 198
 199 static Dlg_head *
 200 init_chmod (void)
 201 {
 202     int i;
 203     Dlg_head *ch_dlg;
 204
 205     do_refresh ();
 206     end_chmod = c_file = need_update = 0;
 207     single_set = (current_panel->marked < 2) ? 2 : 0;
 208
 209     ch_dlg =
 210         create_dlg (TRUE, 0, 0, 22 - single_set, 70, dialog_colors,
 211                     chmod_callback, "[Chmod]", _("Chmod command"), DLG_CENTER | DLG_REVERSE);
 212
 213     for (i = 0; i < BUTTONS; i++)
 214     {
 215         if (i == 2 && single_set)
 216             break;
 217         else
 218             add_widget (ch_dlg,
 219                         button_new (BY + chmod_but[i].y - single_set,
 220                                     BX + chmod_but[i].x,
 221                                     chmod_but[i].ret_cmd,
 222                                     chmod_but[i].flags, _(chmod_but[i].text), 0));
 223     }
 224
 225     add_widget (ch_dlg, groupbox_new (FY, FX, 10, 25, _("File")));
 226
 227     for (i = 0; i < PERMISSIONS; i++)
 228     {
 229         check_perm[i].check = check_new (PY + (PERMISSIONS - i), PX + 2, 0, _(check_perm[i].text));
 230         add_widget (ch_dlg, check_perm[i].check);
 231     }
 232
 233     add_widget (ch_dlg, groupbox_new ( PY, PX, PERMISSIONS + 2, 33, _("Permission")));
 234
 235     return ch_dlg;
 236 }
 237
 238 static void
 239 chmod_done (void)
 240 {
 241     if (need_update)
 242         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 243     repaint_screen ();
 244 }
 245
 246 static char *
 247 next_file (void)
 248 {
 249     while (!current_panel->dir.list[c_file].f.marked)
 250         c_file++;
 251
 252     return current_panel->dir.list[c_file].fname;
 253 }
 254
 255 static void
 256 do_chmod (struct stat *sf)
 257 {
 258     sf->st_mode &= and_mask;
 259     sf->st_mode |= or_mask;
 260     if (mc_chmod (current_panel->dir.list[c_file].fname, sf->st_mode) == -1)
 261         message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 262                  current_panel->dir.list[c_file].fname, unix_error_string (errno));
 263
 264     do_file_mark (current_panel, c_file, 0);
 265 }
 266
 267 static void
 268 apply_mask (struct stat *sf)
 269 {
 270     char *fname;
 271
 272     need_update = end_chmod = 1;
 273     do_chmod (sf);
 274
 275     do
 276     {
 277         fname = next_file ();
 278         if (mc_stat (fname, sf) != 0)
 279             return;
 280         c_stat = sf->st_mode;
 281
 282         do_chmod (sf);
 283     }
 284     while (current_panel->marked);
 285 }
 286
 287 void
 288 chmod_cmd (void)
 289 {
 290     char buffer[BUF_TINY];
 291     char *fname;
 292     int i;
 293     struct stat sf_stat;
 294     Dlg_head *ch_dlg;
 295
 296     do
 297     {                           /* do while any files remaining */
 298         ch_dlg = init_chmod ();
 299         if (current_panel->marked)
 300             fname = next_file ();       /* next marked file */
 301         else
 302             fname = selection (current_panel)->fname;   /* single file */
 303
 304         if (mc_stat (fname, &sf_stat) != 0)
 305         {                       /* get status of file */
 306             destroy_dlg (ch_dlg);
 307             break;
 308         }
 309
 310         c_stat = sf_stat.st_mode;
 311         mode_change = 0;        /* clear changes flag */
 312
 313         /* set check buttons */
 314         for (i = 0; i < PERMISSIONS; i++)
 315         {
 316             check_perm[i].check->state = (c_stat & check_perm[i].mode) ? 1 : 0;
 317             check_perm[i].selected = 0;
 318         }
 319
 320         /* Set the labels */
 321         c_fname = str_trunc (fname, 21);
 322         add_widget (ch_dlg, label_new (FY + 2, FX + 2, c_fname));
 323         c_fown = str_trunc (get_owner (sf_stat.st_uid), 21);
 324         add_widget (ch_dlg, label_new (FY + 6, FX + 2, c_fown));
 325         c_fgrp = str_trunc (get_group (sf_stat.st_gid), 21);
 326         add_widget (ch_dlg, label_new (FY + 8, FX + 2, c_fgrp));
 327         g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 328         statl = label_new (FY + 4, FX + 2, buffer);
 329         add_widget (ch_dlg, statl);
 330
 331         run_dlg (ch_dlg);       /* retrieve an action */
 332
 333         /* do action */
 334         switch (ch_dlg->ret_value)
 335         {
 336         case B_ENTER:
 337             if (mode_change)
 338                 if (mc_chmod (fname, c_stat) == -1)
 339                     message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 340                              fname, unix_error_string (errno));
 341             need_update = 1;
 342             break;
 343
 344         case B_CANCEL:
 345             end_chmod = 1;
 346             break;
 347
 348         case B_ALL:
 349         case B_MARKED:
 350             and_mask = or_mask = 0;
 351             and_mask = ~and_mask;
 352
 353             for (i = 0; i < PERMISSIONS; i++)
 354             {
 355                 if (check_perm[i].selected || ch_dlg->ret_value == B_ALL)
 356                 {
 357                     if (check_perm[i].check->state & C_BOOL)
 358                         or_mask |= check_perm[i].mode;
 359                     else
 360                         and_mask &= ~check_perm[i].mode;
 361                 }
 362             }
 363
 364             apply_mask (&sf_stat);
 365             break;
 366
 367         case B_SETMRK:
 368             and_mask = or_mask = 0;
 369             and_mask = ~and_mask;
 370
 371             for (i = 0; i < PERMISSIONS; i++)
 372             {
 373                 if (check_perm[i].selected)
 374                     or_mask |= check_perm[i].mode;
 375             }
 376
 377             apply_mask (&sf_stat);
 378             break;
 379
 380         case B_CLRMRK:
 381             and_mask = or_mask = 0;
 382             and_mask = ~and_mask;
 383
 384             for (i = 0; i < PERMISSIONS; i++)
 385             {
 386                 if (check_perm[i].selected)
 387                     and_mask &= ~check_perm[i].mode;
 388             }
 389
 390             apply_mask (&sf_stat);
 391             break;
 392         }
 393
 394         if (current_panel->marked && ch_dlg->ret_value != B_CANCEL)
 395         {
 396             do_file_mark (current_panel, c_file, 0);
 397             need_update = 1;
 398         }
 399
 400         destroy_dlg (ch_dlg);
 401     }
 402     while (current_panel->marked && !end_chmod);
 403
 404     chmod_done ();
 405 }