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 #include "lib/util.h"
  41 #include "lib/widget.h"
  42
  43 #include "panel.h"              /* do_file_mark() */
  44 #include "main.h"               /* update_panels() */
  45 #include "layout.h"             /* repaint_screen() */
  46 #include "chmod.h"
  47
  48 /*** global variables ****************************************************************************/
  49
  50 /*** file scope macro definitions ****************************************************************/
  51
  52 #define PX 5
  53 #define PY 2
  54
  55 #define FX 40
  56 #define FY 2
  57
  58 #define BX 6
  59 #define BY 17
  60
  61 #define TX 40
  62 #define TY 12
  63
  64 #define PERMISSIONS 12
  65 #define BUTTONS 6
  66
  67 #define B_MARKED B_USER
  68 #define B_ALL    (B_USER+1)
  69 #define B_SETMRK (B_USER+2)
  70 #define B_CLRMRK (B_USER+3)
  71
  72 /*** file scope type declarations ****************************************************************/
  73
  74 /*** file scope variables ************************************************************************/
  75
  76 static int single_set;
  77
  78 static int mode_change, need_update;
  79 static int c_file, end_chmod;
  80
  81 static mode_t and_mask, or_mask, c_stat;
  82
  83 /* FIXME: these variables are superfluous, aren't they? (hint: str_trunc
  84  * returns a pointer to a static buffer, and label_new creates its own copy
  85  * of its argument)
  86  * --rillig, 2004-08-29 */
  87 static const char *c_fname, *c_fown, *c_fgrp;
  88
  89 static WLabel *statl;
  90
  91 static struct
  92 {
  93     mode_t mode;
  94     const char *text;
  95     int selected;
  96     WCheck *check;
  97 } check_perm[PERMISSIONS] =
  98 {
  99     /* *INDENT-OFF* */
 100     { S_IXOTH, N_("execute/search by others"), 0, 0 },
 101     { S_IWOTH, N_("write by others"), 0, 0 },
 102     { S_IROTH, N_("read by others"), 0, 0 },
 103     { S_IXGRP, N_("execute/search by group"), 0, 0 },
 104     { S_IWGRP, N_("write by group"), 0, 0 },
 105     { S_IRGRP, N_("read by group"), 0, 0 },
 106     { S_IXUSR, N_("execute/search by owner"), 0, 0 },
 107     { S_IWUSR, N_("write by owner"), 0, 0 },
 108     { S_IRUSR, N_("read by owner"), 0, 0 },
 109     { S_ISVTX, N_("sticky bit"), 0, 0 },
 110     { S_ISGID, N_("set group ID on execution"), 0, 0 },
 111     { S_ISUID, N_("set user ID on execution"), 0, 0 }
 112     /* *INDENT-ON* */
 113 };
 114
 115 static struct
 116 {
 117     int ret_cmd, flags, y, x;
 118     const char *text;
 119 } chmod_but[BUTTONS] =
 120 {
 121     /* *INDENT-OFF* */
 122     { B_CANCEL, NORMAL_BUTTON, 2, 33, N_("&Cancel") },
 123     { B_ENTER, DEFPUSH_BUTTON, 2, 17, N_("&Set") },
 124     { B_CLRMRK, NORMAL_BUTTON, 0, 42, N_("C&lear marked") },
 125     { B_SETMRK, NORMAL_BUTTON, 0, 27, N_("S&et marked") },
 126     { B_MARKED, NORMAL_BUTTON, 0, 12, N_("&Marked all") },
 127     { B_ALL,    NORMAL_BUTTON, 0, 0, N_("Set &all") }
 128     /* *INDENT-ON* */
 129 };
 130
 131 /*** file scope functions ************************************************************************/
 132 /* --------------------------------------------------------------------------------------------- */
 133
 134 static void
 135 chmod_toggle_select (Dlg_head * h, int Id)
 136 {
 137     tty_setcolor (COLOR_NORMAL);
 138     check_perm[Id].selected ^= 1;
 139
 140     dlg_move (h, PY + PERMISSIONS - Id, PX + 1);
 141     tty_print_char ((check_perm[Id].selected) ? '*' : ' ');
 142     dlg_move (h, PY + PERMISSIONS - Id, PX + 3);
 143 }
 144
 145 /* --------------------------------------------------------------------------------------------- */
 146
 147 static void
 148 chmod_refresh (Dlg_head * h)
 149 {
 150     common_dialog_repaint (h);
 151
 152     tty_setcolor (COLOR_NORMAL);
 153
 154     dlg_move (h, FY + 1, FX + 2);
 155     tty_print_string (_("Name"));
 156     dlg_move (h, FY + 3, FX + 2);
 157     tty_print_string (_("Permissions (Octal)"));
 158     dlg_move (h, FY + 5, FX + 2);
 159     tty_print_string (_("Owner name"));
 160     dlg_move (h, FY + 7, FX + 2);
 161     tty_print_string (_("Group name"));
 162
 163     dlg_move (h, TY, TX);
 164     tty_print_string (_("Use SPACE to change"));
 165     dlg_move (h, TY + 1, TX);
 166     tty_print_string (_("an option, ARROW KEYS"));
 167     dlg_move (h, TY + 2, TX);
 168     tty_print_string (_("to move between options"));
 169     dlg_move (h, TY + 3, TX);
 170     tty_print_string (_("and T or INS to mark"));
 171 }
 172
 173 /* --------------------------------------------------------------------------------------------- */
 174
 175 static cb_ret_t
 176 chmod_callback (Dlg_head * h, Widget * sender, dlg_msg_t msg, int parm, void *data)
 177 {
 178     char buffer[BUF_TINY];
 179     int id = dlg_get_current_widget_id (h) - BUTTONS + single_set * 2 - 1;
 180
 181     switch (msg)
 182     {
 183     case DLG_ACTION:
 184         if (id >= 0)
 185         {
 186             c_stat ^= check_perm[id].mode;
 187             g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 188             label_set_text (statl, buffer);
 189             chmod_toggle_select (h, id);
 190             mode_change = 1;
 191         }
 192         return MSG_HANDLED;
 193
 194     case DLG_KEY:
 195         if ((parm == 'T' || parm == 't' || parm == KEY_IC) && id > 0)
 196         {
 197             chmod_toggle_select (h, id);
 198             if (parm == KEY_IC)
 199                 dlg_one_down (h);
 200             return MSG_HANDLED;
 201         }
 202         return MSG_NOT_HANDLED;
 203
 204     case DLG_DRAW:
 205         chmod_refresh (h);
 206         return MSG_HANDLED;
 207
 208     default:
 209         return default_dlg_callback (h, sender, msg, parm, data);
 210     }
 211 }
 212
 213 /* --------------------------------------------------------------------------------------------- */
 214
 215 static Dlg_head *
 216 init_chmod (void)
 217 {
 218     int i;
 219     Dlg_head *ch_dlg;
 220
 221     do_refresh ();
 222     end_chmod = c_file = need_update = 0;
 223     single_set = (current_panel->marked < 2) ? 2 : 0;
 224
 225     ch_dlg =
 226         create_dlg (TRUE, 0, 0, 22 - single_set, 70, dialog_colors,
 227                     chmod_callback, "[Chmod]", _("Chmod command"), DLG_CENTER | DLG_REVERSE);
 228
 229     for (i = 0; i < BUTTONS; i++)
 230     {
 231         if (i == 2 && single_set)
 232             break;
 233         else
 234             add_widget (ch_dlg,
 235                         button_new (BY + chmod_but[i].y - single_set,
 236                                     BX + chmod_but[i].x,
 237                                     chmod_but[i].ret_cmd,
 238                                     chmod_but[i].flags, _(chmod_but[i].text), 0));
 239     }
 240
 241     add_widget (ch_dlg, groupbox_new (FY, FX, 10, 25, _("File")));
 242
 243     for (i = 0; i < PERMISSIONS; i++)
 244     {
 245         check_perm[i].check = check_new (PY + (PERMISSIONS - i), PX + 2, 0, _(check_perm[i].text));
 246         add_widget (ch_dlg, check_perm[i].check);
 247     }
 248
 249     add_widget (ch_dlg, groupbox_new (PY, PX, PERMISSIONS + 2, 33, _("Permission")));
 250
 251     return ch_dlg;
 252 }
 253
 254 /* --------------------------------------------------------------------------------------------- */
 255
 256 static void
 257 chmod_done (void)
 258 {
 259     if (need_update)
 260         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 261     repaint_screen ();
 262 }
 263
 264 /* --------------------------------------------------------------------------------------------- */
 265
 266 static char *
 267 next_file (void)
 268 {
 269     while (!current_panel->dir.list[c_file].f.marked)
 270         c_file++;
 271
 272     return current_panel->dir.list[c_file].fname;
 273 }
 274
 275 /* --------------------------------------------------------------------------------------------- */
 276
 277 static void
 278 do_chmod (struct stat *sf)
 279 {
 280     sf->st_mode &= and_mask;
 281     sf->st_mode |= or_mask;
 282     if (mc_chmod (current_panel->dir.list[c_file].fname, sf->st_mode) == -1)
 283         message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 284                  current_panel->dir.list[c_file].fname, unix_error_string (errno));
 285
 286     do_file_mark (current_panel, c_file, 0);
 287 }
 288
 289 /* --------------------------------------------------------------------------------------------- */
 290
 291 static void
 292 apply_mask (struct stat *sf)
 293 {
 294     char *fname;
 295
 296     need_update = end_chmod = 1;
 297     do_chmod (sf);
 298
 299     do
 300     {
 301         fname = next_file ();
 302         if (mc_stat (fname, sf) != 0)
 303             return;
 304         c_stat = sf->st_mode;
 305
 306         do_chmod (sf);
 307     }
 308     while (current_panel->marked);
 309 }
 310
 311 /* --------------------------------------------------------------------------------------------- */
 312 /*** public functions ****************************************************************************/
 313 /* --------------------------------------------------------------------------------------------- */
 314
 315 void
 316 chmod_cmd (void)
 317 {
 318     char buffer[BUF_TINY];
 319     char *fname;
 320     int i;
 321     struct stat sf_stat;
 322     Dlg_head *ch_dlg;
 323
 324     do
 325     {                           /* do while any files remaining */
 326         ch_dlg = init_chmod ();
 327         if (current_panel->marked)
 328             fname = next_file ();       /* next marked file */
 329         else
 330             fname = selection (current_panel)->fname;   /* single file */
 331
 332         if (mc_stat (fname, &sf_stat) != 0)
 333         {                       /* get status of file */
 334             destroy_dlg (ch_dlg);
 335             break;
 336         }
 337
 338         c_stat = sf_stat.st_mode;
 339         mode_change = 0;        /* clear changes flag */
 340
 341         /* set check buttons */
 342         for (i = 0; i < PERMISSIONS; i++)
 343         {
 344             check_perm[i].check->state = (c_stat & check_perm[i].mode) ? 1 : 0;
 345             check_perm[i].selected = 0;
 346         }
 347
 348         /* Set the labels */
 349         c_fname = str_trunc (fname, 21);
 350         add_widget (ch_dlg, label_new (FY + 2, FX + 2, c_fname));
 351         c_fown = str_trunc (get_owner (sf_stat.st_uid), 21);
 352         add_widget (ch_dlg, label_new (FY + 6, FX + 2, c_fown));
 353         c_fgrp = str_trunc (get_group (sf_stat.st_gid), 21);
 354         add_widget (ch_dlg, label_new (FY + 8, FX + 2, c_fgrp));
 355         g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 356         statl = label_new (FY + 4, FX + 2, buffer);
 357         add_widget (ch_dlg, statl);
 358
 359         run_dlg (ch_dlg);       /* retrieve an action */
 360
 361         /* do action */
 362         switch (ch_dlg->ret_value)
 363         {
 364         case B_ENTER:
 365             if (mode_change)
 366                 if (mc_chmod (fname, c_stat) == -1)
 367                     message (D_ERROR, MSG_ERROR, _("Cannot chmod \"%s\"\n%s"),
 368                              fname, unix_error_string (errno));
 369             need_update = 1;
 370             break;
 371
 372         case B_CANCEL:
 373             end_chmod = 1;
 374             break;
 375
 376         case B_ALL:
 377         case B_MARKED:
 378             and_mask = or_mask = 0;
 379             and_mask = ~and_mask;
 380
 381             for (i = 0; i < PERMISSIONS; i++)
 382             {
 383                 if (check_perm[i].selected || ch_dlg->ret_value == B_ALL)
 384                 {
 385                     if (check_perm[i].check->state & C_BOOL)
 386                         or_mask |= check_perm[i].mode;
 387                     else
 388                         and_mask &= ~check_perm[i].mode;
 389                 }
 390             }
 391
 392             apply_mask (&sf_stat);
 393             break;
 394
 395         case B_SETMRK:
 396             and_mask = or_mask = 0;
 397             and_mask = ~and_mask;
 398
 399             for (i = 0; i < PERMISSIONS; i++)
 400             {
 401                 if (check_perm[i].selected)
 402                     or_mask |= check_perm[i].mode;
 403             }
 404
 405             apply_mask (&sf_stat);
 406             break;
 407
 408         case B_CLRMRK:
 409             and_mask = or_mask = 0;
 410             and_mask = ~and_mask;
 411
 412             for (i = 0; i < PERMISSIONS; i++)
 413             {
 414                 if (check_perm[i].selected)
 415                     and_mask &= ~check_perm[i].mode;
 416             }
 417
 418             apply_mask (&sf_stat);
 419             break;
 420         }
 421
 422         if (current_panel->marked && ch_dlg->ret_value != B_CANCEL)
 423         {
 424             do_file_mark (current_panel, c_file, 0);
 425             need_update = 1;
 426         }
 427
 428         destroy_dlg (ch_dlg);
 429     }
 430     while (current_panel->marked && !end_chmod);
 431
 432     chmod_done ();
 433 }
 434
 435 /* --------------------------------------------------------------------------------------------- */