src/filemanager/chown.c

   1 /*
   2    Chown command -- for the Midnight Commander
   3
   4    Copyright (C) 1994-2024
   5    Free Software Foundation, Inc.
   6
   7    This file is part of the Midnight Commander.
   8
   9    The Midnight Commander is free software: you can redistribute it
  10    and/or modify it under the terms of the GNU General Public License as
  11    published by the Free Software Foundation, either version 3 of the License,
  12    or (at your option) any later version.
  13
  14    The Midnight Commander is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 /** \file chown.c
  24  *  \brief Source: chown command
  25  */
  26
  27 #include <config.h>
  28
  29 #include <errno.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <pwd.h>
  33 #include <grp.h>
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <unistd.h>
  37
  38 #include "lib/global.h"
  39
  40 #include "lib/tty/tty.h"
  41 #include "lib/skin.h"
  42 #include "lib/vfs/vfs.h"
  43 #include "lib/strutil.h"
  44 #include "lib/util.h"
  45 #include "lib/widget.h"
  46
  47 #include "src/setup.h"          /* panels_options */
  48
  49 #include "cmd.h"                /* chown_cmd() */
  50
  51 /*** global variables ****************************************************************************/
  52
  53 /*** file scope macro definitions ****************************************************************/
  54
  55 #define GH 12
  56 #define GW 21
  57
  58 #define BUTTONS 5
  59
  60 #define B_SETALL        B_USER
  61 #define B_SETUSR        (B_USER + 1)
  62 #define B_SETGRP        (B_USER + 2)
  63
  64 #define LABELS 5
  65
  66 #define chown_label(n,txt) label_set_text (chown_label [n].l, txt)
  67
  68 /*** file scope type declarations ****************************************************************/
  69
  70 /*** forward declarations (file scope functions) *************************************************/
  71
  72 /*** file scope variables ************************************************************************/
  73
  74 static struct
  75 {
  76     int ret_cmd;
  77     button_flags_t flags;
  78     int y;
  79     int len;
  80     const char *text;
  81 } chown_but[BUTTONS] = {
  82     /* *INDENT-OFF* */
  83     { B_SETALL,  NORMAL_BUTTON, 5, 0, N_("Set &all")    },
  84     { B_SETGRP,  NORMAL_BUTTON, 5, 0, N_("Set &groups") },
  85     { B_SETUSR,  NORMAL_BUTTON, 5, 0, N_("Set &users")  },
  86     { B_ENTER,  DEFPUSH_BUTTON, 3, 0, N_("&Set")        },
  87     { B_CANCEL,  NORMAL_BUTTON, 3, 0, N_("&Cancel")     }
  88     /* *INDENT-ON* */
  89 };
  90
  91 /* summary length of three buttons */
  92 static int blen = 0;
  93
  94 static struct
  95 {
  96     int y;
  97     WLabel *l;
  98 } chown_label[LABELS] = {
  99     /* *INDENT-OFF* */
 100     {  4, NULL },
 101     {  6, NULL },
 102     {  8, NULL },
 103     { 10, NULL },
 104     { 12, NULL }
 105     /* *INDENT-ON* */
 106 };
 107
 108 static int current_file;
 109 static gboolean ignore_all;
 110
 111 static WListbox *l_user, *l_group;
 112
 113 /* --------------------------------------------------------------------------------------------- */
 114 /*** file scope functions ************************************************************************/
 115 /* --------------------------------------------------------------------------------------------- */
 116
 117 static void
 118 chown_init (void)
 119 {
 120     static gboolean i18n = FALSE;
 121     int i;
 122
 123     if (i18n)
 124         return;
 125
 126     i18n = TRUE;
 127
 128 #ifdef ENABLE_NLS
 129     for (i = 0; i < BUTTONS; i++)
 130         chown_but[i].text = _(chown_but[i].text);
 131 #endif /* ENABLE_NLS */
 132
 133     for (i = 0; i < BUTTONS; i++)
 134     {
 135         chown_but[i].len = str_term_width1 (chown_but[i].text) + 3;     /* [], spaces and w/o & */
 136         if (chown_but[i].flags == DEFPUSH_BUTTON)
 137             chown_but[i].len += 2;      /* <> */
 138
 139         if (i < BUTTONS - 2)
 140             blen += chown_but[i].len;
 141     }
 142
 143     blen += 2;
 144 }
 145
 146 /* --------------------------------------------------------------------------------------------- */
 147
 148 static void
 149 chown_refresh (const Widget *h)
 150 {
 151     int y = 3;
 152     int x = 7 + GW * 2;
 153
 154     tty_setcolor (COLOR_NORMAL);
 155
 156     widget_gotoyx (h, y + 0, x);
 157     tty_print_string (_("Name"));
 158     widget_gotoyx (h, y + 2, x);
 159     tty_print_string (_("Owner name"));
 160     widget_gotoyx (h, y + 4, x);
 161     tty_print_string (_("Group name"));
 162     widget_gotoyx (h, y + 6, x);
 163     tty_print_string (_("Size"));
 164     widget_gotoyx (h, y + 8, x);
 165     tty_print_string (_("Permission"));
 166 }
 167
 168 /* --------------------------------------------------------------------------------------------- */
 169
 170 static cb_ret_t
 171 chown_bg_callback (Widget *w, Widget *sender, widget_msg_t msg, int parm, void *data)
 172 {
 173     switch (msg)
 174     {
 175     case MSG_DRAW:
 176         frame_callback (w, NULL, MSG_DRAW, 0, NULL);
 177         chown_refresh (WIDGET (w->owner));
 178         return MSG_HANDLED;
 179
 180     default:
 181         return frame_callback (w, sender, msg, parm, data);
 182     }
 183 }
 184
 185 /* --------------------------------------------------------------------------------------------- */
 186
 187 static WDialog *
 188 chown_dlg_create (WPanel *panel)
 189 {
 190     int single_set;
 191     WDialog *ch_dlg;
 192     WGroup *g;
 193     int lines, cols;
 194     int i, y;
 195     struct passwd *l_pass;
 196     struct group *l_grp;
 197
 198     single_set = (panel->marked < 2) ? 3 : 0;
 199     lines = GH + 4 + (single_set != 0 ? 2 : 4);
 200     cols = GW * 3 + 2 + 6;
 201
 202     ch_dlg =
 203         dlg_create (TRUE, 0, 0, lines, cols, WPOS_CENTER, FALSE, dialog_colors, NULL, NULL,
 204                     "[Chown]", _("Chown command"));
 205     g = GROUP (ch_dlg);
 206
 207     /* draw background */
 208     ch_dlg->bg->callback = chown_bg_callback;
 209
 210     group_add_widget (g, groupbox_new (2, 3, GH, GW, _("User name")));
 211     l_user = listbox_new (3, 4, GH - 2, GW - 2, FALSE, NULL);
 212     group_add_widget (g, l_user);
 213     /* add field for unknown names (numbers) */
 214     listbox_add_item (l_user, LISTBOX_APPEND_AT_END, 0, _("<Unknown user>"), NULL, FALSE);
 215     /* get and put user names in the listbox */
 216     setpwent ();
 217     while ((l_pass = getpwent ()) != NULL)
 218         listbox_add_item (l_user, LISTBOX_APPEND_SORTED, 0, l_pass->pw_name, NULL, FALSE);
 219     endpwent ();
 220
 221     group_add_widget (g, groupbox_new (2, 4 + GW, GH, GW, _("Group name")));
 222     l_group = listbox_new (3, 5 + GW, GH - 2, GW - 2, FALSE, NULL);
 223     group_add_widget (g, l_group);
 224     /* add field for unknown names (numbers) */
 225     listbox_add_item (l_group, LISTBOX_APPEND_AT_END, 0, _("<Unknown group>"), NULL, FALSE);
 226     /* get and put group names in the listbox */
 227     setgrent ();
 228     while ((l_grp = getgrent ()) != NULL)
 229         listbox_add_item (l_group, LISTBOX_APPEND_SORTED, 0, l_grp->gr_name, NULL, FALSE);
 230     endgrent ();
 231
 232     group_add_widget (g, groupbox_new (2, 5 + GW * 2, GH, GW, _("File")));
 233     /* add widgets for the file information */
 234     for (i = 0; i < LABELS; i++)
 235     {
 236         chown_label[i].l = label_new (chown_label[i].y, 7 + GW * 2, NULL);
 237         group_add_widget (g, chown_label[i].l);
 238     }
 239
 240     if (single_set == 0)
 241     {
 242         int x;
 243
 244         group_add_widget (g, hline_new (lines - chown_but[0].y - 1, -1, -1));
 245
 246         y = lines - chown_but[0].y;
 247         x = (cols - blen) / 2;
 248
 249         for (i = 0; i < BUTTONS - 2; i++)
 250         {
 251             group_add_widget (g, button_new (y, x, chown_but[i].ret_cmd, chown_but[i].flags,
 252                                              chown_but[i].text, NULL));
 253             x += chown_but[i].len + 1;
 254         }
 255     }
 256
 257     i = BUTTONS - 2;
 258     y = lines - chown_but[i].y;
 259     group_add_widget (g, hline_new (y - 1, -1, -1));
 260     group_add_widget (g, button_new (y, WIDGET (ch_dlg)->rect.cols / 2 - chown_but[i].len,
 261                                      chown_but[i].ret_cmd, chown_but[i].flags, chown_but[i].text,
 262                                      NULL));
 263     i++;
 264     group_add_widget (g, button_new (y, WIDGET (ch_dlg)->rect.cols / 2 + 1, chown_but[i].ret_cmd,
 265                                      chown_but[i].flags, chown_but[i].text, NULL));
 266
 267     /* select first listbox */
 268     widget_select (WIDGET (l_user));
 269
 270     return ch_dlg;
 271 }
 272
 273 /* --------------------------------------------------------------------------------------------- */
 274
 275 static void
 276 chown_done (gboolean need_update)
 277 {
 278     if (need_update)
 279         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 280     repaint_screen ();
 281 }
 282
 283 /* --------------------------------------------------------------------------------------------- */
 284
 285 static const GString *
 286 next_file (const WPanel *panel)
 287 {
 288     while (panel->dir.list[current_file].f.marked == 0)
 289         current_file++;
 290
 291     return panel->dir.list[current_file].fname;
 292 }
 293
 294 /* --------------------------------------------------------------------------------------------- */
 295
 296 static gboolean
 297 try_chown (const vfs_path_t *p, uid_t u, gid_t g)
 298 {
 299     const char *fname = NULL;
 300
 301     while (mc_chown (p, u, g) == -1 && !ignore_all)
 302     {
 303         int my_errno = errno;
 304         int result;
 305         char *msg;
 306
 307         if (fname == NULL)
 308             fname = x_basename (vfs_path_as_str (p));
 309         msg = g_strdup_printf (_("Cannot chown \"%s\"\n%s"), fname, unix_error_string (my_errno));
 310         result =
 311             query_dialog (MSG_ERROR, msg, D_ERROR, 4, _("&Ignore"), _("Ignore &all"), _("&Retry"),
 312                           _("&Cancel"));
 313         g_free (msg);
 314
 315         switch (result)
 316         {
 317         case 0:
 318             /* try next file */
 319             return TRUE;
 320
 321         case 1:
 322             ignore_all = TRUE;
 323             /* try next file */
 324             return TRUE;
 325
 326         case 2:
 327             /* retry this file */
 328             break;
 329
 330         case 3:
 331         default:
 332             /* stop remain files processing */
 333             return FALSE;
 334         }
 335     }
 336
 337     return TRUE;
 338 }
 339
 340 /* --------------------------------------------------------------------------------------------- */
 341
 342 static gboolean
 343 do_chown (WPanel *panel, const vfs_path_t *p, uid_t u, gid_t g)
 344 {
 345     gboolean ret;
 346
 347     ret = try_chown (p, u, g);
 348
 349     do_file_mark (panel, current_file, 0);
 350
 351     return ret;
 352 }
 353
 354 /* --------------------------------------------------------------------------------------------- */
 355
 356 static void
 357 apply_chowns (WPanel *panel, vfs_path_t *vpath, uid_t u, gid_t g)
 358 {
 359     gboolean ok;
 360
 361     if (!do_chown (panel, vpath, u, g))
 362         return;
 363
 364     do
 365     {
 366         const GString *fname;
 367         struct stat sf;
 368
 369         fname = next_file (panel);
 370         vpath = vfs_path_from_str (fname->str);
 371         ok = (mc_stat (vpath, &sf) == 0);
 372
 373         if (!ok)
 374         {
 375             /* if current file was deleted outside mc -- try next file */
 376             /* decrease panel->marked */
 377             do_file_mark (panel, current_file, 0);
 378
 379             /* try next file */
 380             ok = TRUE;
 381         }
 382         else
 383             ok = do_chown (panel, vpath, u, g);
 384
 385         vfs_path_free (vpath, TRUE);
 386     }
 387     while (ok && panel->marked != 0);
 388 }
 389
 390 /* --------------------------------------------------------------------------------------------- */
 391 /*** public functions ****************************************************************************/
 392 /* --------------------------------------------------------------------------------------------- */
 393
 394 void
 395 chown_cmd (WPanel *panel)
 396 {
 397     gboolean need_update;
 398     gboolean end_chown;
 399
 400     chown_init ();
 401
 402     current_file = 0;
 403     ignore_all = FALSE;
 404
 405     do
 406     {                           /* do while any files remaining */
 407         vfs_path_t *vpath;
 408         WDialog *ch_dlg;
 409         struct stat sf_stat;
 410         const GString *fname;
 411         int result;
 412         char buffer[BUF_TINY];
 413         uid_t new_user = (uid_t) (-1);
 414         gid_t new_group = (gid_t) (-1);
 415
 416         do_refresh ();
 417
 418         need_update = FALSE;
 419         end_chown = FALSE;
 420
 421         if (panel->marked != 0)
 422             fname = next_file (panel);  /* next marked file */
 423         else
 424             fname = panel_current_entry (panel)->fname; /* single file */
 425
 426         vpath = vfs_path_from_str (fname->str);
 427
 428         if (mc_stat (vpath, &sf_stat) != 0)
 429         {
 430             vfs_path_free (vpath, TRUE);
 431             break;
 432         }
 433
 434         ch_dlg = chown_dlg_create (panel);
 435
 436         /* select in listboxes */
 437         listbox_set_current (l_user, listbox_search_text (l_user, get_owner (sf_stat.st_uid)));
 438         listbox_set_current (l_group, listbox_search_text (l_group, get_group (sf_stat.st_gid)));
 439
 440         chown_label (0, str_trunc (fname->str, GW - 4));
 441         chown_label (1, str_trunc (get_owner (sf_stat.st_uid), GW - 4));
 442         chown_label (2, str_trunc (get_group (sf_stat.st_gid), GW - 4));
 443         size_trunc_len (buffer, GW - 4, sf_stat.st_size, 0, panels_options.kilobyte_si);
 444         chown_label (3, buffer);
 445         chown_label (4, string_perm (sf_stat.st_mode));
 446
 447         result = dlg_run (ch_dlg);
 448
 449         switch (result)
 450         {
 451         case B_CANCEL:
 452             end_chown = TRUE;
 453             break;
 454
 455         case B_ENTER:
 456         case B_SETALL:
 457             {
 458                 struct group *grp;
 459                 struct passwd *user;
 460                 char *text;
 461
 462                 listbox_get_current (l_group, &text, NULL);
 463                 grp = getgrnam (text);
 464                 if (grp != NULL)
 465                     new_group = grp->gr_gid;
 466                 listbox_get_current (l_user, &text, NULL);
 467                 user = getpwnam (text);
 468                 if (user != NULL)
 469                     new_user = user->pw_uid;
 470                 if (result == B_ENTER)
 471                 {
 472                     if (panel->marked <= 1)
 473                     {
 474                         /* single or last file */
 475                         if (mc_chown (vpath, new_user, new_group) == -1)
 476                             message (D_ERROR, MSG_ERROR, _("Cannot chown \"%s\"\n%s"),
 477                                      fname->str, unix_error_string (errno));
 478                         end_chown = TRUE;
 479                     }
 480                     else if (!try_chown (vpath, new_user, new_group))
 481                     {
 482                         /* stop multiple files processing */
 483                         result = B_CANCEL;
 484                         end_chown = TRUE;
 485                     }
 486                 }
 487                 else
 488                 {
 489                     apply_chowns (panel, vpath, new_user, new_group);
 490                     end_chown = TRUE;
 491                 }
 492
 493                 need_update = TRUE;
 494                 break;
 495             }
 496
 497         case B_SETUSR:
 498             {
 499                 struct passwd *user;
 500                 char *text;
 501
 502                 listbox_get_current (l_user, &text, NULL);
 503                 user = getpwnam (text);
 504                 if (user != NULL)
 505                 {
 506                     new_user = user->pw_uid;
 507                     apply_chowns (panel, vpath, new_user, new_group);
 508                     need_update = TRUE;
 509                     end_chown = TRUE;
 510                 }
 511                 break;
 512             }
 513
 514         case B_SETGRP:
 515             {
 516                 struct group *grp;
 517                 char *text;
 518
 519                 listbox_get_current (l_group, &text, NULL);
 520                 grp = getgrnam (text);
 521                 if (grp != NULL)
 522                 {
 523                     new_group = grp->gr_gid;
 524                     apply_chowns (panel, vpath, new_user, new_group);
 525                     need_update = TRUE;
 526                     end_chown = TRUE;
 527                 }
 528                 break;
 529             }
 530
 531         default:
 532             break;
 533         }
 534
 535         if (panel->marked != 0 && result != B_CANCEL)
 536         {
 537             do_file_mark (panel, current_file, 0);
 538             need_update = TRUE;
 539         }
 540
 541         vfs_path_free (vpath, TRUE);
 542
 543         widget_destroy (WIDGET (ch_dlg));
 544     }
 545     while (panel->marked != 0 && !end_chown);
 546
 547     chown_done (need_update);
 548 }
 549
 550 /* --------------------------------------------------------------------------------------------- */