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     mode_t mode;
  86     const char *text;
  87     int selected;
  88     WCheck *check;
  89 } check_perm[PERMISSIONS] =
  90 {
  91     { S_IXOTH, N_("execute/search by others"), 0, 0, },
  92     { S_IWOTH, N_("write by others"), 0, 0, },
  93     { S_IROTH, N_("read by others"), 0, 0, },
  94     { S_IXGRP, N_("execute/search by group"), 0, 0, },
  95     { S_IWGRP, N_("write by group"), 0, 0, },
  96     { S_IRGRP, N_("read by group"), 0, 0, },
  97     { S_IXUSR, N_("execute/search by owner"), 0, 0, },
  98     { S_IWUSR, N_("write by owner"), 0, 0, },
  99     { S_IRUSR, N_("read by owner"), 0, 0, },
 100     { S_ISVTX, N_("sticky bit"), 0, 0, },
 101     { S_ISGID, N_("set group ID on execution"), 0, 0, },
 102     { S_ISUID, N_("set user ID on execution"), 0, 0, },
 103 };
 104
 105 static struct {
 106     int ret_cmd, flags, y, x;
 107     const char *text;
 108 } chmod_but[BUTTONS] =
 109 {
 110     { B_CANCEL, NORMAL_BUTTON,  2, 33, N_("&Cancel") },
 111     { B_ENTER,  DEFPUSH_BUTTON, 2, 17, N_("&Set") },
 112     { B_CLRMRK, NORMAL_BUTTON,  0, 42, N_("C&lear marked") },
 113     { B_SETMRK, NORMAL_BUTTON,  0, 27, N_("S&et marked") },
 114     { B_MARKED, NORMAL_BUTTON,  0, 12, N_("&Marked all") },
 115     { B_ALL,    NORMAL_BUTTON,  0, 0,  N_("Set &all") },
 116 };
 117
 118 static void chmod_toggle_select (Dlg_head *h, int Id)
 119 {
 120     tty_setcolor (COLOR_NORMAL);
 121     check_perm[Id].selected ^= 1;
 122
 123     dlg_move (h, PY + PERMISSIONS - Id, PX + 1);
 124     tty_print_char ((check_perm[Id].selected) ? '*' : ' ');
 125     dlg_move (h, PY + PERMISSIONS - Id, PX + 3);
 126 }
 127
 128 static void chmod_refresh (Dlg_head *h)
 129 {
 130     common_dialog_repaint (h);
 131
 132     tty_setcolor (COLOR_NORMAL);
 133
 134     draw_box (h, PY, PX, PERMISSIONS + 2, 33, TRUE);
 135     draw_box (h, FY, FX, 10, 25, TRUE);
 136
 137     dlg_move (h, FY + 1, FX + 2);
 138     tty_print_string (_("Name"));
 139     dlg_move (h, FY + 3, FX + 2);
 140     tty_print_string (_("Permissions (Octal)"));
 141     dlg_move (h, FY + 5, FX + 2);
 142     tty_print_string (_("Owner name"));
 143     dlg_move (h, FY + 7, FX + 2);
 144     tty_print_string (_("Group name"));
 145
 146     dlg_move (h, TY, TX);
 147     tty_print_string (_("Use SPACE to change"));
 148     dlg_move (h, TY + 1, TX);
 149     tty_print_string (_("an option, ARROW KEYS"));
 150     dlg_move (h, TY + 2, TX);
 151     tty_print_string (_("to move between options"));
 152     dlg_move (h, TY + 3, TX);
 153     tty_print_string (_("and T or INS to mark"));
 154
 155     tty_setcolor (COLOR_HOT_NORMAL);
 156
 157     dlg_move (h, PY, PX + 1);
 158     tty_print_string (_(" Permission "));
 159     dlg_move (h, FY, FX + 1);
 160     tty_print_string (_(" File "));
 161 }
 162
 163 static cb_ret_t
 164 chmod_callback (Dlg_head *h, Widget *sender,
 165                 dlg_msg_t msg, int parm, void *data)
 166 {
 167     char buffer[BUF_TINY];
 168     int id = h->current->dlg_id - BUTTONS + single_set * 2;
 169
 170     switch (msg) {
 171     case DLG_ACTION:
 172         if (id >= 0) {
 173             c_stat ^= check_perm[id].mode;
 174             g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 175             label_set_text (statl, buffer);
 176             chmod_toggle_select (h, id);
 177             mode_change = 1;
 178         }
 179         return MSG_HANDLED;
 180
 181     case DLG_KEY:
 182         if ((parm == 'T' || parm == 't' || parm == KEY_IC) && id > 0) {
 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 (0, 0, 22 - single_set, 70, dialog_colors,
 211                     chmod_callback, "[Chmod]", _("Chmod command"),
 212                     DLG_CENTER | DLG_REVERSE);
 213
 214     for (i = 0; i < BUTTONS; i++) {
 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,
 223                                     _(chmod_but[i].text), 0));
 224     }
 225
 226     for (i = 0; i < PERMISSIONS; i++) {
 227         check_perm[i].check =
 228             check_new (PY + (PERMISSIONS - i), PX + 2, 0,
 229                        _(check_perm[i].text));
 230         add_widget (ch_dlg, check_perm[i].check);
 231     }
 232
 233     return ch_dlg;
 234 }
 235
 236 static void chmod_done (void)
 237 {
 238     if (need_update)
 239         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 240     repaint_screen ();
 241 }
 242
 243 static char *next_file (void)
 244 {
 245     while (!current_panel->dir.list[c_file].f.marked)
 246         c_file++;
 247
 248     return current_panel->dir.list[c_file].fname;
 249 }
 250
 251 static void do_chmod (struct stat *sf)
 252 {
 253     sf->st_mode &= and_mask;
 254     sf->st_mode |= or_mask;
 255     if (mc_chmod (current_panel->dir.list [c_file].fname, sf->st_mode) == -1)
 256         message (D_ERROR, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 257              current_panel->dir.list [c_file].fname, unix_error_string (errno));
 258
 259     do_file_mark (current_panel, c_file, 0);
 260 }
 261
 262 static void apply_mask (struct stat *sf)
 263 {
 264     char *fname;
 265
 266     need_update = end_chmod = 1;
 267     do_chmod (sf);
 268
 269     do {
 270         fname = next_file ();
 271         if (mc_stat (fname, sf) != 0)
 272             return;
 273         c_stat = sf->st_mode;
 274
 275         do_chmod (sf);
 276     } while (current_panel->marked);
 277 }
 278
 279 void chmod_cmd (void)
 280 {
 281     char buffer [BUF_TINY];
 282     char *fname;
 283     int i;
 284     struct stat sf_stat;
 285     Dlg_head *ch_dlg;
 286
 287     do {                        /* do while any files remaining */
 288         ch_dlg = init_chmod ();
 289         if (current_panel->marked)
 290             fname = next_file ();       /* next marked file */
 291         else
 292             fname = selection (current_panel)->fname;   /* single file */
 293
 294         if (mc_stat (fname, &sf_stat) != 0) {   /* get status of file */
 295             destroy_dlg (ch_dlg);
 296             break;
 297         }
 298
 299         c_stat = sf_stat.st_mode;
 300         mode_change = 0;        /* clear changes flag */
 301
 302         /* set check buttons */
 303         for (i = 0; i < PERMISSIONS; i++){
 304             check_perm[i].check->state = (c_stat & check_perm[i].mode) ? 1 : 0;
 305             check_perm[i].selected = 0;
 306         }
 307
 308         /* Set the labels */
 309         c_fname = str_trunc (fname, 21);
 310         add_widget (ch_dlg, label_new (FY+2, FX+2, c_fname));
 311         c_fown = str_trunc (get_owner (sf_stat.st_uid), 21);
 312         add_widget (ch_dlg, label_new (FY+6, FX+2, c_fown));
 313         c_fgrp = str_trunc (get_group (sf_stat.st_gid), 21);
 314         add_widget (ch_dlg, label_new (FY+8, FX+2, c_fgrp));
 315         g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 316         statl = label_new (FY+4, FX+2, buffer);
 317         add_widget (ch_dlg, statl);
 318
 319         run_dlg (ch_dlg);       /* retrieve an action */
 320
 321         /* do action */
 322         switch (ch_dlg->ret_value){
 323         case B_ENTER:
 324             if (mode_change)
 325                 if (mc_chmod (fname, c_stat) == -1)
 326                     message (D_ERROR, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 327                          fname, unix_error_string (errno));
 328             need_update = 1;
 329             break;
 330
 331         case B_CANCEL:
 332             end_chmod = 1;
 333             break;
 334
 335         case B_ALL:
 336         case B_MARKED:
 337             and_mask = or_mask = 0;
 338             and_mask = ~and_mask;
 339
 340             for (i = 0; i < PERMISSIONS; i++) {
 341                 if (check_perm[i].selected || ch_dlg->ret_value == B_ALL) {
 342                     if (check_perm[i].check->state & C_BOOL)
 343                         or_mask |= check_perm[i].mode;
 344                     else
 345                         and_mask &= ~check_perm[i].mode;
 346                 }
 347             }
 348
 349             apply_mask (&sf_stat);
 350             break;
 351
 352         case B_SETMRK:
 353             and_mask = or_mask = 0;
 354             and_mask = ~and_mask;
 355
 356             for (i = 0; i < PERMISSIONS; i++) {
 357                 if (check_perm[i].selected)
 358                     or_mask |= check_perm[i].mode;
 359             }
 360
 361             apply_mask (&sf_stat);
 362             break;
 363         case B_CLRMRK:
 364             and_mask = or_mask = 0;
 365             and_mask = ~and_mask;
 366
 367             for (i = 0; i < PERMISSIONS; i++) {
 368                 if (check_perm[i].selected)
 369                     and_mask &= ~check_perm[i].mode;
 370             }
 371
 372             apply_mask (&sf_stat);
 373             break;
 374         }
 375
 376         if (current_panel->marked && ch_dlg->ret_value!=B_CANCEL) {
 377             do_file_mark (current_panel, c_file, 0);
 378             need_update = 1;
 379         }
 380         destroy_dlg (ch_dlg);
 381     } while (current_panel->marked && !end_chmod);
 382     chmod_done ();
 383 }
 384