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 "global.h"
  35
  36 #include "../src/tty/tty.h"
  37 #include "../src/skin/skin.h"
  38
  39 #include "dialog.h"     /* add_widget() */
  40 #include "widget.h"     /* NORMAL_BUTTON */
  41 #include "wtools.h"     /* message() */
  42 #include "panel.h"      /* do_file_mark() */
  43 #include "main.h"       /* update_panels() */
  44 #include "layout.h"     /* repaint_screen() */
  45 #include "chmod.h"
  46 #include "strutil.h"
  47
  48 static int single_set;
  49
  50 #define PX              5
  51 #define PY              2
  52
  53 #define FX              40
  54 #define FY              2
  55
  56 #define BX              6
  57 #define BY              17
  58
  59 #define TX              40
  60 #define TY              12
  61
  62 #define PERMISSIONS     12
  63 #define BUTTONS         6
  64
  65 #define B_MARKED        B_USER
  66 #define B_ALL           (B_USER+1)
  67 #define B_SETMRK        (B_USER+2)
  68 #define B_CLRMRK        (B_USER+3)
  69
  70 static int mode_change, need_update;
  71 static int c_file, end_chmod;
  72
  73 static mode_t and_mask, or_mask, c_stat;
  74
  75 /* FIXME: these variables are superfluous, aren't they? (hint: name_trunc
  76  * returns a pointer to a static buffer, and label_new creates its own copy
  77  * of its argument)
  78  * --rillig, 2004-08-29 */
  79 static const char *c_fname, *c_fown, *c_fgrp;
  80
  81 static WLabel *statl;
  82
  83 static struct {
  84     mode_t mode;
  85     const char *text;
  86     int selected;
  87     WCheck *check;
  88 } check_perm[PERMISSIONS] =
  89 {
  90     { S_IXOTH, N_("execute/search by others"), 0, 0, },
  91     { S_IWOTH, N_("write by others"), 0, 0, },
  92     { S_IROTH, N_("read by others"), 0, 0, },
  93     { S_IXGRP, N_("execute/search by group"), 0, 0, },
  94     { S_IWGRP, N_("write by group"), 0, 0, },
  95     { S_IRGRP, N_("read by group"), 0, 0, },
  96     { S_IXUSR, N_("execute/search by owner"), 0, 0, },
  97     { S_IWUSR, N_("write by owner"), 0, 0, },
  98     { S_IRUSR, N_("read by owner"), 0, 0, },
  99     { S_ISVTX, N_("sticky bit"), 0, 0, },
 100     { S_ISGID, N_("set group ID on execution"), 0, 0, },
 101     { S_ISUID, N_("set user ID on execution"), 0, 0, },
 102 };
 103
 104 static struct {
 105     int ret_cmd, flags, y, x;
 106     const char *text;
 107 } chmod_but[BUTTONS] =
 108 {
 109     { B_CANCEL, NORMAL_BUTTON,  2, 33, N_("&Cancel") },
 110     { B_ENTER,  DEFPUSH_BUTTON, 2, 17, N_("&Set") },
 111     { B_CLRMRK, NORMAL_BUTTON,  0, 42, N_("C&lear marked") },
 112     { B_SETMRK, NORMAL_BUTTON,  0, 27, N_("S&et marked") },
 113     { B_MARKED, NORMAL_BUTTON,  0, 12, N_("&Marked all") },
 114     { B_ALL,    NORMAL_BUTTON,  0, 0,  N_("Set &all") },
 115 };
 116
 117 static void chmod_toggle_select (Dlg_head *h, int Id)
 118 {
 119     tty_setcolor (COLOR_NORMAL);
 120     check_perm[Id].selected ^= 1;
 121
 122     dlg_move (h, PY + PERMISSIONS - Id, PX + 1);
 123     tty_print_char ((check_perm[Id].selected) ? '*' : ' ');
 124     dlg_move (h, PY + PERMISSIONS - Id, PX + 3);
 125 }
 126
 127 static void chmod_refresh (Dlg_head *h)
 128 {
 129     common_dialog_repaint (h);
 130
 131     tty_setcolor (COLOR_NORMAL);
 132
 133     draw_box (h, PY, PX, PERMISSIONS + 2, 33);
 134     draw_box (h, FY, FX, 10, 25);
 135
 136     dlg_move (h, FY + 1, FX + 2);
 137     tty_print_string (_("Name"));
 138     dlg_move (h, FY + 3, FX + 2);
 139     tty_print_string (_("Permissions (Octal)"));
 140     dlg_move (h, FY + 5, FX + 2);
 141     tty_print_string (_("Owner name"));
 142     dlg_move (h, FY + 7, FX + 2);
 143     tty_print_string (_("Group name"));
 144
 145     dlg_move (h, TY, TX);
 146     tty_print_string (_("Use SPACE to change"));
 147     dlg_move (h, TY + 1, TX);
 148     tty_print_string (_("an option, ARROW KEYS"));
 149     dlg_move (h, TY + 2, TX);
 150     tty_print_string (_("to move between options"));
 151     dlg_move (h, TY + 3, TX);
 152     tty_print_string (_("and T or INS to mark"));
 153
 154     tty_setcolor (COLOR_HOT_NORMAL);
 155
 156     dlg_move (h, PY, PX + 1);
 157     tty_print_string (_(" Permission "));
 158     dlg_move (h, FY, FX + 1);
 159     tty_print_string (_(" File "));
 160 }
 161
 162 static cb_ret_t
 163 chmod_callback (Dlg_head *h, Widget *sender,
 164                 dlg_msg_t msg, int parm, void *data)
 165 {
 166     char buffer[BUF_TINY];
 167     int id = h->current->dlg_id - BUTTONS + single_set * 2;
 168
 169     switch (msg) {
 170     case DLG_ACTION:
 171         if (id >= 0) {
 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             chmod_toggle_select (h, id);
 183             if (parm == KEY_IC)
 184                 dlg_one_down (h);
 185             return MSG_HANDLED;
 186         }
 187         return MSG_NOT_HANDLED;
 188
 189     case DLG_DRAW:
 190         chmod_refresh (h);
 191         return MSG_HANDLED;
 192
 193     default:
 194         return default_dlg_callback (h, sender, msg, parm, data);
 195     }
 196 }
 197
 198 static Dlg_head *
 199 init_chmod (void)
 200 {
 201     int i;
 202     Dlg_head *ch_dlg;
 203
 204     do_refresh ();
 205     end_chmod = c_file = need_update = 0;
 206     single_set = (current_panel->marked < 2) ? 2 : 0;
 207
 208     ch_dlg =
 209         create_dlg (0, 0, 22 - single_set, 70, dialog_colors,
 210                     chmod_callback, "[Chmod]", _("Chmod command"),
 211                     DLG_CENTER | DLG_REVERSE);
 212
 213     for (i = 0; i < BUTTONS; i++) {
 214         if (i == 2 && single_set)
 215             break;
 216         else
 217             add_widget (ch_dlg,
 218                         button_new (BY + chmod_but[i].y - single_set,
 219                                     BX + chmod_but[i].x,
 220                                     chmod_but[i].ret_cmd,
 221                                     chmod_but[i].flags,
 222                                     _(chmod_but[i].text), 0));
 223     }
 224
 225     for (i = 0; i < PERMISSIONS; i++) {
 226         check_perm[i].check =
 227             check_new (PY + (PERMISSIONS - i), PX + 2, 0,
 228                        _(check_perm[i].text));
 229         add_widget (ch_dlg, check_perm[i].check);
 230     }
 231
 232     return ch_dlg;
 233 }
 234
 235 static void chmod_done (void)
 236 {
 237     if (need_update)
 238         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 239     repaint_screen ();
 240 }
 241
 242 static char *next_file (void)
 243 {
 244     while (!current_panel->dir.list[c_file].f.marked)
 245         c_file++;
 246
 247     return current_panel->dir.list[c_file].fname;
 248 }
 249
 250 static void do_chmod (struct stat *sf)
 251 {
 252     sf->st_mode &= and_mask;
 253     sf->st_mode |= or_mask;
 254     if (mc_chmod (current_panel->dir.list [c_file].fname, sf->st_mode) == -1)
 255         message (D_ERROR, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 256              current_panel->dir.list [c_file].fname, unix_error_string (errno));
 257
 258     do_file_mark (current_panel, c_file, 0);
 259 }
 260
 261 static void apply_mask (struct stat *sf)
 262 {
 263     char *fname;
 264
 265     need_update = end_chmod = 1;
 266     do_chmod (sf);
 267
 268     do {
 269         fname = next_file ();
 270         if (mc_stat (fname, sf) != 0)
 271             return;
 272         c_stat = sf->st_mode;
 273
 274         do_chmod (sf);
 275     } while (current_panel->marked);
 276 }
 277
 278 void chmod_cmd (void)
 279 {
 280     char buffer [BUF_TINY];
 281     char *fname;
 282     int i;
 283     struct stat sf_stat;
 284     Dlg_head *ch_dlg;
 285
 286     do {                        /* do while any files remaining */
 287         ch_dlg = init_chmod ();
 288         if (current_panel->marked)
 289             fname = next_file ();       /* next marked file */
 290         else
 291             fname = selection (current_panel)->fname;   /* single file */
 292
 293         if (mc_stat (fname, &sf_stat) != 0) {   /* get status of file */
 294             destroy_dlg (ch_dlg);
 295             break;
 296         }
 297
 298         c_stat = sf_stat.st_mode;
 299         mode_change = 0;        /* clear changes flag */
 300
 301         /* set check buttons */
 302         for (i = 0; i < PERMISSIONS; i++){
 303             check_perm[i].check->state = (c_stat & check_perm[i].mode) ? 1 : 0;
 304             check_perm[i].selected = 0;
 305         }
 306
 307         /* Set the labels */
 308         c_fname = str_trunc (fname, 21);
 309         add_widget (ch_dlg, label_new (FY+2, FX+2, c_fname));
 310         c_fown = str_trunc (get_owner (sf_stat.st_uid), 21);
 311         add_widget (ch_dlg, label_new (FY+6, FX+2, c_fown));
 312         c_fgrp = str_trunc (get_group (sf_stat.st_gid), 21);
 313         add_widget (ch_dlg, label_new (FY+8, FX+2, c_fgrp));
 314         g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 315         statl = label_new (FY+4, FX+2, buffer);
 316         add_widget (ch_dlg, statl);
 317
 318         run_dlg (ch_dlg);       /* retrieve an action */
 319
 320         /* do action */
 321         switch (ch_dlg->ret_value){
 322         case B_ENTER:
 323             if (mode_change)
 324                 if (mc_chmod (fname, c_stat) == -1)
 325                     message (D_ERROR, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 326                          fname, unix_error_string (errno));
 327             need_update = 1;
 328             break;
 329
 330         case B_CANCEL:
 331             end_chmod = 1;
 332             break;
 333
 334         case B_ALL:
 335         case B_MARKED:
 336             and_mask = or_mask = 0;
 337             and_mask = ~and_mask;
 338
 339             for (i = 0; i < PERMISSIONS; i++) {
 340                 if (check_perm[i].selected || ch_dlg->ret_value == B_ALL) {
 341                     if (check_perm[i].check->state & C_BOOL)
 342                         or_mask |= check_perm[i].mode;
 343                     else
 344                         and_mask &= ~check_perm[i].mode;
 345                 }
 346             }
 347
 348             apply_mask (&sf_stat);
 349             break;
 350
 351         case B_SETMRK:
 352             and_mask = or_mask = 0;
 353             and_mask = ~and_mask;
 354
 355             for (i = 0; i < PERMISSIONS; i++) {
 356                 if (check_perm[i].selected)
 357                     or_mask |= check_perm[i].mode;
 358             }
 359
 360             apply_mask (&sf_stat);
 361             break;
 362         case B_CLRMRK:
 363             and_mask = or_mask = 0;
 364             and_mask = ~and_mask;
 365
 366             for (i = 0; i < PERMISSIONS; i++) {
 367                 if (check_perm[i].selected)
 368                     and_mask &= ~check_perm[i].mode;
 369             }
 370
 371             apply_mask (&sf_stat);
 372             break;
 373         }
 374
 375         if (current_panel->marked && ch_dlg->ret_value!=B_CANCEL) {
 376             do_file_mark (current_panel, c_file, 0);
 377             need_update = 1;
 378         }
 379         destroy_dlg (ch_dlg);
 380     } while (current_panel->marked && !end_chmod);
 381     chmod_done ();
 382 }
 383