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 #include <config.h>
  21
  22 #include <errno.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <unistd.h>
  29
  30 #include "global.h"
  31 #include "tty.h"        /* A_REVERSE */
  32 #include "color.h"      /* dialog_colors */
  33 #include "dialog.h"     /* add_widget() */
  34 #include "widget.h"     /* NORMAL_BUTTON */
  35 #include "wtools.h"     /* message() */
  36 #include "panel.h"      /* do_file_mark() */
  37 #include "main.h"       /* update_panels() */
  38 #include "chmod.h"
  39
  40 static int single_set;
  41
  42 #define PX              5
  43 #define PY              2
  44
  45 #define FX              40
  46 #define FY              2
  47
  48 #define BX              6
  49 #define BY              17
  50
  51 #define TX              40
  52 #define TY              12
  53
  54 #define PERMISSIONS     12
  55 #define BUTTONS         6
  56
  57 #define B_MARKED        B_USER
  58 #define B_ALL           (B_USER+1)
  59 #define B_SETMRK        (B_USER+2)
  60 #define B_CLRMRK        (B_USER+3)
  61
  62 static int mode_change, need_update;
  63 static int c_file, end_chmod;
  64
  65 static mode_t and_mask, or_mask, c_stat;
  66
  67 /* FIXME: these variables are superfluous, aren't they? (hint: name_trunc
  68  * returns a pointer to a static buffer, and label_new creates its own copy
  69  * of its argument)
  70  * --rillig, 2004-08-29 */
  71 static const char *c_fname, *c_fown, *c_fgrp;
  72
  73 static WLabel *statl;
  74
  75 static struct {
  76     mode_t mode;
  77     const char *text;
  78     int selected;
  79     WCheck *check;
  80 } check_perm[PERMISSIONS] =
  81 {
  82     { S_IXOTH, N_("execute/search by others"), 0, 0, },
  83     { S_IWOTH, N_("write by others"), 0, 0, },
  84     { S_IROTH, N_("read by others"), 0, 0, },
  85     { S_IXGRP, N_("execute/search by group"), 0, 0, },
  86     { S_IWGRP, N_("write by group"), 0, 0, },
  87     { S_IRGRP, N_("read by group"), 0, 0, },
  88     { S_IXUSR, N_("execute/search by owner"), 0, 0, },
  89     { S_IWUSR, N_("write by owner"), 0, 0, },
  90     { S_IRUSR, N_("read by owner"), 0, 0, },
  91     { S_ISVTX, N_("sticky bit"), 0, 0, },
  92     { S_ISGID, N_("set group ID on execution"), 0, 0, },
  93     { S_ISUID, N_("set user ID on execution"), 0, 0, },
  94 };
  95
  96 static struct {
  97     int ret_cmd, flags, y, x;
  98     const char *text;
  99 } chmod_but[BUTTONS] =
 100 {
 101     { B_CANCEL, NORMAL_BUTTON,  2, 33, N_("&Cancel") },
 102     { B_ENTER,  DEFPUSH_BUTTON, 2, 17, N_("&Set") },
 103     { B_CLRMRK, NORMAL_BUTTON,  0, 42, N_("C&lear marked") },
 104     { B_SETMRK, NORMAL_BUTTON,  0, 27, N_("S&et marked") },
 105     { B_MARKED, NORMAL_BUTTON,  0, 12, N_("&Marked all") },
 106     { B_ALL,    NORMAL_BUTTON,  0, 0,  N_("Set &all") },
 107 };
 108
 109 static void chmod_toggle_select (Dlg_head *h, int Id)
 110 {
 111     attrset (COLOR_NORMAL);
 112     check_perm[Id].selected ^= 1;
 113
 114     dlg_move (h, PY + PERMISSIONS - Id, PX + 1);
 115     addch ((check_perm[Id].selected) ? '*' : ' ');
 116     dlg_move (h, PY + PERMISSIONS - Id, PX + 3);
 117 }
 118
 119 static void chmod_refresh (Dlg_head *h)
 120 {
 121     common_dialog_repaint (h);
 122
 123     attrset (COLOR_NORMAL);
 124
 125     draw_box (h, PY, PX, PERMISSIONS + 2, 33);
 126     draw_box (h, FY, FX, 10, 25);
 127
 128     dlg_move (h, FY + 1, FX + 2);
 129     addstr (_("Name"));
 130     dlg_move (h, FY + 3, FX + 2);
 131     addstr (_("Permissions (Octal)"));
 132     dlg_move (h, FY + 5, FX + 2);
 133     addstr (_("Owner name"));
 134     dlg_move (h, FY + 7, FX + 2);
 135     addstr (_("Group name"));
 136
 137     dlg_move (h, TY, TX);
 138     addstr (_("Use SPACE to change"));
 139     dlg_move (h, TY + 1, TX);
 140     addstr (_("an option, ARROW KEYS"));
 141     dlg_move (h, TY + 2, TX);
 142     addstr (_("to move between options"));
 143     dlg_move (h, TY + 3, TX);
 144     addstr (_("and T or INS to mark"));
 145
 146     attrset (COLOR_HOT_NORMAL);
 147
 148     dlg_move (h, PY, PX + 1);
 149     addstr (_(" Permission "));
 150     dlg_move (h, FY, FX + 1);
 151     addstr (_(" File "));
 152 }
 153
 154 static cb_ret_t
 155 chmod_callback (Dlg_head *h, dlg_msg_t msg, int parm)
 156 {
 157     char buffer[BUF_TINY];
 158     int id = h->current->dlg_id - BUTTONS + single_set * 2;
 159
 160     switch (msg) {
 161     case DLG_ACTION:
 162         if (id >= 0) {
 163             c_stat ^= check_perm[id].mode;
 164             g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 165             label_set_text (statl, buffer);
 166             chmod_toggle_select (h, id);
 167             mode_change = 1;
 168         }
 169         return MSG_HANDLED;
 170
 171     case DLG_KEY:
 172         if ((parm == 'T' || parm == 't' || parm == KEY_IC) && id > 0) {
 173             chmod_toggle_select (h, id);
 174             if (parm == KEY_IC)
 175                 dlg_one_down (h);
 176             return MSG_HANDLED;
 177         }
 178         return MSG_NOT_HANDLED;
 179
 180     case DLG_DRAW:
 181         chmod_refresh (h);
 182         return MSG_HANDLED;
 183
 184     default:
 185         return default_dlg_callback (h, msg, parm);
 186     }
 187 }
 188
 189 static Dlg_head *
 190 init_chmod (void)
 191 {
 192     int i;
 193     Dlg_head *ch_dlg;
 194
 195     do_refresh ();
 196     end_chmod = c_file = need_update = 0;
 197     single_set = (current_panel->marked < 2) ? 2 : 0;
 198
 199     ch_dlg =
 200         create_dlg (0, 0, 22 - single_set, 70, dialog_colors,
 201                     chmod_callback, "[Chmod]", _("Chmod command"),
 202                     DLG_CENTER | DLG_REVERSE);
 203
 204     for (i = 0; i < BUTTONS; i++) {
 205         if (i == 2 && single_set)
 206             break;
 207         else
 208             add_widget (ch_dlg,
 209                         button_new (BY + chmod_but[i].y - single_set,
 210                                     BX + chmod_but[i].x,
 211                                     chmod_but[i].ret_cmd,
 212                                     chmod_but[i].flags,
 213                                     _(chmod_but[i].text), 0));
 214     }
 215
 216     for (i = 0; i < PERMISSIONS; i++) {
 217         check_perm[i].check =
 218             check_new (PY + (PERMISSIONS - i), PX + 2, 0,
 219                        _(check_perm[i].text));
 220         add_widget (ch_dlg, check_perm[i].check);
 221     }
 222
 223     return ch_dlg;
 224 }
 225
 226 static void chmod_done (void)
 227 {
 228     if (need_update)
 229         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 230     repaint_screen ();
 231 }
 232
 233 static char *next_file (void)
 234 {
 235     while (!current_panel->dir.list[c_file].f.marked)
 236         c_file++;
 237
 238     return current_panel->dir.list[c_file].fname;
 239 }
 240
 241 static void do_chmod (struct stat *sf)
 242 {
 243     sf->st_mode &= and_mask;
 244     sf->st_mode |= or_mask;
 245     if (mc_chmod (current_panel->dir.list [c_file].fname, sf->st_mode) == -1)
 246         message (D_ERROR, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 247              current_panel->dir.list [c_file].fname, unix_error_string (errno));
 248
 249     do_file_mark (current_panel, c_file, 0);
 250 }
 251
 252 static void apply_mask (struct stat *sf)
 253 {
 254     char *fname;
 255
 256     need_update = end_chmod = 1;
 257     do_chmod (sf);
 258
 259     do {
 260         fname = next_file ();
 261         if (mc_stat (fname, sf) != 0)
 262             return;
 263         c_stat = sf->st_mode;
 264
 265         do_chmod (sf);
 266     } while (current_panel->marked);
 267 }
 268
 269 void chmod_cmd (void)
 270 {
 271     char buffer [BUF_TINY];
 272     char *fname;
 273     int i;
 274     struct stat sf_stat;
 275     Dlg_head *ch_dlg;
 276
 277     do {                        /* do while any files remaining */
 278         ch_dlg = init_chmod ();
 279         if (current_panel->marked)
 280             fname = next_file ();       /* next marked file */
 281         else
 282             fname = selection (current_panel)->fname;   /* single file */
 283
 284         if (mc_stat (fname, &sf_stat) != 0) {   /* get status of file */
 285             destroy_dlg (ch_dlg);
 286             break;
 287         }
 288
 289         c_stat = sf_stat.st_mode;
 290         mode_change = 0;        /* clear changes flag */
 291
 292         /* set check buttons */
 293         for (i = 0; i < PERMISSIONS; i++){
 294             check_perm[i].check->state = (c_stat & check_perm[i].mode) ? 1 : 0;
 295             check_perm[i].selected = 0;
 296         }
 297
 298         /* Set the labels */
 299         c_fname = name_trunc (fname, 21);
 300         add_widget (ch_dlg, label_new (FY+2, FX+2, c_fname));
 301         c_fown = name_trunc (get_owner (sf_stat.st_uid), 21);
 302         add_widget (ch_dlg, label_new (FY+6, FX+2, c_fown));
 303         c_fgrp = name_trunc (get_group (sf_stat.st_gid), 21);
 304         add_widget (ch_dlg, label_new (FY+8, FX+2, c_fgrp));
 305         g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 306         statl = label_new (FY+4, FX+2, buffer);
 307         add_widget (ch_dlg, statl);
 308
 309         run_dlg (ch_dlg);       /* retrieve an action */
 310
 311         /* do action */
 312         switch (ch_dlg->ret_value){
 313         case B_ENTER:
 314             if (mode_change)
 315                 if (mc_chmod (fname, c_stat) == -1)
 316                     message (D_ERROR, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 317                          fname, unix_error_string (errno));
 318             need_update = 1;
 319             break;
 320
 321         case B_CANCEL:
 322             end_chmod = 1;
 323             break;
 324
 325         case B_ALL:
 326         case B_MARKED:
 327             and_mask = or_mask = 0;
 328             and_mask = ~and_mask;
 329
 330             for (i = 0; i < PERMISSIONS; i++) {
 331                 if (check_perm[i].selected || ch_dlg->ret_value == B_ALL) {
 332                     if (check_perm[i].check->state & C_BOOL)
 333                         or_mask |= check_perm[i].mode;
 334                     else
 335                         and_mask &= ~check_perm[i].mode;
 336                 }
 337             }
 338
 339             apply_mask (&sf_stat);
 340             break;
 341
 342         case B_SETMRK:
 343             and_mask = or_mask = 0;
 344             and_mask = ~and_mask;
 345
 346             for (i = 0; i < PERMISSIONS; i++) {
 347                 if (check_perm[i].selected)
 348                     or_mask |= check_perm[i].mode;
 349             }
 350
 351             apply_mask (&sf_stat);
 352             break;
 353         case B_CLRMRK:
 354             and_mask = or_mask = 0;
 355             and_mask = ~and_mask;
 356
 357             for (i = 0; i < PERMISSIONS; i++) {
 358                 if (check_perm[i].selected)
 359                     and_mask &= ~check_perm[i].mode;
 360             }
 361
 362             apply_mask (&sf_stat);
 363             break;
 364         }
 365
 366         if (current_panel->marked && ch_dlg->ret_value!=B_CANCEL) {
 367             do_file_mark (current_panel, c_file, 0);
 368             need_update = 1;
 369         }
 370         destroy_dlg (ch_dlg);
 371     } while (current_panel->marked && !end_chmod);
 372     chmod_done ();
 373 }
 374