src/chmod.c

   1 /* Chmod command -- for the Midnight Commander
   2    Copyright (C) 1994 Radek Doulik
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  */
  18
  19 #include <config.h>
  20
  21 #include <errno.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <unistd.h>
  28
  29 #include "global.h"
  30 #include "tty.h"        /* A_REVERSE */
  31 #include "color.h"      /* dialog_colors */
  32 #include "dialog.h"     /* add_widget() */
  33 #include "widget.h"     /* NORMAL_BUTTON */
  34 #include "wtools.h"     /* message() */
  35 #include "panel.h"      /* do_file_mark() */
  36 #include "main.h"       /* update_panels() */
  37 #include "chmod.h"
  38
  39 static int single_set;
  40
  41 #define PX              5
  42 #define PY              2
  43
  44 #define FX              40
  45 #define FY              2
  46
  47 #define BX              6
  48 #define BY              17
  49
  50 #define TX              40
  51 #define TY              12
  52
  53 #define PERMISSIONS     12
  54 #define BUTTONS         6
  55
  56 #define B_MARKED        B_USER
  57 #define B_ALL           (B_USER+1)
  58 #define B_SETMRK        (B_USER+2)
  59 #define B_CLRMRK        (B_USER+3)
  60
  61 static int mode_change, need_update;
  62 static int c_file, end_chmod;
  63
  64 static mode_t and_mask, or_mask, c_stat;
  65
  66 /* FIXME: these variables are superfluous, aren't they? (hint: name_trunc
  67  * returns a pointer to a static buffer, and label_new creates its own copy
  68  * of its argument)
  69  * --rillig, 2004-08-29 */
  70 static const char *c_fname, *c_fown, *c_fgrp;
  71
  72 static WLabel *statl;
  73
  74 static struct {
  75     mode_t mode;
  76     const char *text;
  77     int selected;
  78     WCheck *check;
  79 } check_perm[PERMISSIONS] =
  80 {
  81     { S_IXOTH, N_("execute/search by others"), 0, 0, },
  82     { S_IWOTH, N_("write by others"), 0, 0, },
  83     { S_IROTH, N_("read by others"), 0, 0, },
  84     { S_IXGRP, N_("execute/search by group"), 0, 0, },
  85     { S_IWGRP, N_("write by group"), 0, 0, },
  86     { S_IRGRP, N_("read by group"), 0, 0, },
  87     { S_IXUSR, N_("execute/search by owner"), 0, 0, },
  88     { S_IWUSR, N_("write by owner"), 0, 0, },
  89     { S_IRUSR, N_("read by owner"), 0, 0, },
  90     { S_ISVTX, N_("sticky bit"), 0, 0, },
  91     { S_ISGID, N_("set group ID on execution"), 0, 0, },
  92     { S_ISUID, N_("set user ID on execution"), 0, 0, },
  93 };
  94
  95 static struct {
  96     int ret_cmd, flags, y, x;
  97     const char *text;
  98 } chmod_but[BUTTONS] =
  99 {
 100     { B_CANCEL, NORMAL_BUTTON,  2, 33, N_("&Cancel") },
 101     { B_ENTER,  DEFPUSH_BUTTON, 2, 17, N_("&Set") },
 102     { B_CLRMRK, NORMAL_BUTTON,  0, 42, N_("C&lear marked") },
 103     { B_SETMRK, NORMAL_BUTTON,  0, 27, N_("S&et marked") },
 104     { B_MARKED, NORMAL_BUTTON,  0, 12, N_("&Marked all") },
 105     { B_ALL,    NORMAL_BUTTON,  0, 0,  N_("Set &all") },
 106 };
 107
 108 static void chmod_toggle_select (Dlg_head *h, int Id)
 109 {
 110     attrset (COLOR_NORMAL);
 111     check_perm[Id].selected ^= 1;
 112
 113     dlg_move (h, PY + PERMISSIONS - Id, PX + 1);
 114     addch ((check_perm[Id].selected) ? '*' : ' ');
 115     dlg_move (h, PY + PERMISSIONS - Id, PX + 3);
 116 }
 117
 118 static void chmod_refresh (Dlg_head *h)
 119 {
 120     common_dialog_repaint (h);
 121
 122     attrset (COLOR_NORMAL);
 123
 124     draw_box (h, PY, PX, PERMISSIONS + 2, 33);
 125     draw_box (h, FY, FX, 10, 25);
 126
 127     dlg_move (h, FY + 1, FX + 2);
 128     addstr (_("Name"));
 129     dlg_move (h, FY + 3, FX + 2);
 130     addstr (_("Permissions (Octal)"));
 131     dlg_move (h, FY + 5, FX + 2);
 132     addstr (_("Owner name"));
 133     dlg_move (h, FY + 7, FX + 2);
 134     addstr (_("Group name"));
 135
 136     dlg_move (h, TY, TX);
 137     addstr (_("Use SPACE to change"));
 138     dlg_move (h, TY + 1, TX);
 139     addstr (_("an option, ARROW KEYS"));
 140     dlg_move (h, TY + 2, TX);
 141     addstr (_("to move between options"));
 142     dlg_move (h, TY + 3, TX);
 143     addstr (_("and T or INS to mark"));
 144
 145     attrset (COLOR_HOT_NORMAL);
 146
 147     dlg_move (h, PY, PX + 1);
 148     addstr (_(" Permission "));
 149     dlg_move (h, FY, FX + 1);
 150     addstr (_(" File "));
 151 }
 152
 153 static cb_ret_t
 154 chmod_callback (Dlg_head *h, dlg_msg_t msg, int parm)
 155 {
 156     char buffer[BUF_TINY];
 157     int id = h->current->dlg_id - BUTTONS + single_set * 2;
 158
 159     switch (msg) {
 160     case DLG_ACTION:
 161         if (id >= 0) {
 162             c_stat ^= check_perm[id].mode;
 163             g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 164             label_set_text (statl, buffer);
 165             chmod_toggle_select (h, id);
 166             mode_change = 1;
 167         }
 168         return MSG_HANDLED;
 169
 170     case DLG_KEY:
 171         if ((parm == 'T' || parm == 't' || parm == KEY_IC) && id > 0) {
 172             chmod_toggle_select (h, id);
 173             if (parm == KEY_IC)
 174                 dlg_one_down (h);
 175             return MSG_HANDLED;
 176         }
 177         return MSG_NOT_HANDLED;
 178
 179     case DLG_DRAW:
 180         chmod_refresh (h);
 181         return MSG_HANDLED;
 182
 183     default:
 184         return default_dlg_callback (h, msg, parm);
 185     }
 186 }
 187
 188 static Dlg_head *
 189 init_chmod (void)
 190 {
 191     int i;
 192     Dlg_head *ch_dlg;
 193
 194     do_refresh ();
 195     end_chmod = c_file = need_update = 0;
 196     single_set = (current_panel->marked < 2) ? 2 : 0;
 197
 198     ch_dlg =
 199         create_dlg (0, 0, 22 - single_set, 70, dialog_colors,
 200                     chmod_callback, "[Chmod]", _("Chmod command"),
 201                     DLG_CENTER | DLG_REVERSE);
 202
 203     for (i = 0; i < BUTTONS; i++) {
 204         if (i == 2 && single_set)
 205             break;
 206         else
 207             add_widget (ch_dlg,
 208                         button_new (BY + chmod_but[i].y - single_set,
 209                                     BX + chmod_but[i].x,
 210                                     chmod_but[i].ret_cmd,
 211                                     chmod_but[i].flags,
 212                                     _(chmod_but[i].text), 0));
 213     }
 214
 215     for (i = 0; i < PERMISSIONS; i++) {
 216         check_perm[i].check =
 217             check_new (PY + (PERMISSIONS - i), PX + 2, 0,
 218                        _(check_perm[i].text));
 219         add_widget (ch_dlg, check_perm[i].check);
 220     }
 221
 222     return ch_dlg;
 223 }
 224
 225 static void chmod_done (void)
 226 {
 227     if (need_update)
 228         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 229     repaint_screen ();
 230 }
 231
 232 static char *next_file (void)
 233 {
 234     while (!current_panel->dir.list[c_file].f.marked)
 235         c_file++;
 236
 237     return current_panel->dir.list[c_file].fname;
 238 }
 239
 240 static void do_chmod (struct stat *sf)
 241 {
 242     sf->st_mode &= and_mask;
 243     sf->st_mode |= or_mask;
 244     if (mc_chmod (current_panel->dir.list [c_file].fname, sf->st_mode) == -1)
 245         message (1, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 246              current_panel->dir.list [c_file].fname, unix_error_string (errno));
 247
 248     do_file_mark (current_panel, c_file, 0);
 249 }
 250
 251 static void apply_mask (struct stat *sf)
 252 {
 253     char *fname;
 254
 255     need_update = end_chmod = 1;
 256     do_chmod (sf);
 257
 258     do {
 259         fname = next_file ();
 260         if (mc_stat (fname, sf) != 0)
 261             return;
 262         c_stat = sf->st_mode;
 263
 264         do_chmod (sf);
 265     } while (current_panel->marked);
 266 }
 267
 268 void chmod_cmd (void)
 269 {
 270     char buffer [BUF_TINY];
 271     char *fname;
 272     int i;
 273     struct stat sf_stat;
 274     Dlg_head *ch_dlg;
 275
 276     do {                        /* do while any files remaining */
 277         ch_dlg = init_chmod ();
 278         if (current_panel->marked)
 279             fname = next_file ();       /* next marked file */
 280         else
 281             fname = selection (current_panel)->fname;   /* single file */
 282
 283         if (mc_stat (fname, &sf_stat) != 0) {   /* get status of file */
 284             destroy_dlg (ch_dlg);
 285             break;
 286         }
 287
 288         c_stat = sf_stat.st_mode;
 289         mode_change = 0;        /* clear changes flag */
 290
 291         /* set check buttons */
 292         for (i = 0; i < PERMISSIONS; i++){
 293             check_perm[i].check->state = (c_stat & check_perm[i].mode) ? 1 : 0;
 294             check_perm[i].selected = 0;
 295         }
 296
 297         /* Set the labels */
 298         c_fname = name_trunc (fname, 21);
 299         add_widget (ch_dlg, label_new (FY+2, FX+2, c_fname));
 300         c_fown = name_trunc (get_owner (sf_stat.st_uid), 21);
 301         add_widget (ch_dlg, label_new (FY+6, FX+2, c_fown));
 302         c_fgrp = name_trunc (get_group (sf_stat.st_gid), 21);
 303         add_widget (ch_dlg, label_new (FY+8, FX+2, c_fgrp));
 304         g_snprintf (buffer, sizeof (buffer), "%o", c_stat);
 305         statl = label_new (FY+4, FX+2, buffer);
 306         add_widget (ch_dlg, statl);
 307
 308         run_dlg (ch_dlg);       /* retrieve an action */
 309
 310         /* do action */
 311         switch (ch_dlg->ret_value){
 312         case B_ENTER:
 313             if (mode_change)
 314                 if (mc_chmod (fname, c_stat) == -1)
 315                     message (1, MSG_ERROR, _(" Cannot chmod \"%s\" \n %s "),
 316                          fname, unix_error_string (errno));
 317             need_update = 1;
 318             break;
 319
 320         case B_CANCEL:
 321             end_chmod = 1;
 322             break;
 323
 324         case B_ALL:
 325         case B_MARKED:
 326             and_mask = or_mask = 0;
 327             and_mask = ~and_mask;
 328
 329             for (i = 0; i < PERMISSIONS; i++) {
 330                 if (check_perm[i].selected || ch_dlg->ret_value == B_ALL) {
 331                     if (check_perm[i].check->state & C_BOOL)
 332                         or_mask |= check_perm[i].mode;
 333                     else
 334                         and_mask &= ~check_perm[i].mode;
 335                 }
 336             }
 337
 338             apply_mask (&sf_stat);
 339             break;
 340
 341         case B_SETMRK:
 342             and_mask = or_mask = 0;
 343             and_mask = ~and_mask;
 344
 345             for (i = 0; i < PERMISSIONS; i++) {
 346                 if (check_perm[i].selected)
 347                     or_mask |= check_perm[i].mode;
 348             }
 349
 350             apply_mask (&sf_stat);
 351             break;
 352         case B_CLRMRK:
 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                     and_mask &= ~check_perm[i].mode;
 359             }
 360
 361             apply_mask (&sf_stat);
 362             break;
 363         }
 364
 365         if (current_panel->marked && ch_dlg->ret_value!=B_CANCEL) {
 366             do_file_mark (current_panel, c_file, 0);
 367             need_update = 1;
 368         }
 369         destroy_dlg (ch_dlg);
 370     } while (current_panel->marked && !end_chmod);
 371     chmod_done ();
 372 }
 373