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 {
  83     /* *INDENT-OFF* */
  84     { B_SETALL,  NORMAL_BUTTON, 5, 0, N_("Set &all")    },
  85     { B_SETGRP,  NORMAL_BUTTON, 5, 0, N_("Set &groups") },
  86     { B_SETUSR,  NORMAL_BUTTON, 5, 0, N_("Set &users")  },
  87     { B_ENTER,  DEFPUSH_BUTTON, 3, 0, N_("&Set")        },
  88     { B_CANCEL,  NORMAL_BUTTON, 3, 0, N_("&Cancel")     }
  89     /* *INDENT-ON* */
  90 };
  91
  92 /* summary length of three buttons */
  93 static int blen = 0;
  94
  95 static struct
  96 {
  97     int y;
  98     WLabel *l;
  99 } chown_label[LABELS] =
 100 {
 101     /* *INDENT-OFF* */
 102     {  4, NULL },
 103     {  6, NULL },
 104     {  8, NULL },
 105     { 10, NULL },
 106     { 12, NULL }
 107     /* *INDENT-ON* */
 108 };
 109
 110 static int current_file;
 111 static gboolean ignore_all;
 112
 113 static WListbox *l_user, *l_group;
 114
 115 /* --------------------------------------------------------------------------------------------- */
 116 /*** file scope functions ************************************************************************/
 117 /* --------------------------------------------------------------------------------------------- */
 118
 119 static void
 120 chown_init (void)
 121 {
 122     static gboolean i18n = FALSE;
 123     int i;
 124
 125     if (i18n)
 126         return;
 127
 128     i18n = TRUE;
 129
 130 #ifdef ENABLE_NLS
 131     for (i = 0; i < BUTTONS; i++)
 132         chown_but[i].text = _(chown_but[i].text);
 133 #endif /* ENABLE_NLS */
 134
 135     for (i = 0; i < BUTTONS; i++)
 136     {
 137         chown_but[i].len = str_term_width1 (chown_but[i].text) + 3;     /* [], spaces and w/o & */
 138         if (chown_but[i].flags == DEFPUSH_BUTTON)
 139             chown_but[i].len += 2;      /* <> */
 140
 141         if (i < BUTTONS - 2)
 142             blen += chown_but[i].len;
 143     }
 144
 145     blen += 2;
 146 }
 147
 148 /* --------------------------------------------------------------------------------------------- */
 149
 150 static void
 151 chown_refresh (const Widget * h)
 152 {
 153     int y = 3;
 154     int x = 7 + GW * 2;
 155
 156     tty_setcolor (COLOR_NORMAL);
 157
 158     widget_gotoyx (h, y + 0, x);
 159     tty_print_string (_("Name"));
 160     widget_gotoyx (h, y + 2, x);
 161     tty_print_string (_("Owner name"));
 162     widget_gotoyx (h, y + 4, x);
 163     tty_print_string (_("Group name"));
 164     widget_gotoyx (h, y + 6, x);
 165     tty_print_string (_("Size"));
 166     widget_gotoyx (h, y + 8, x);
 167     tty_print_string (_("Permission"));
 168 }
 169
 170 /* --------------------------------------------------------------------------------------------- */
 171
 172 static cb_ret_t
 173 chown_bg_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
 174 {
 175     switch (msg)
 176     {
 177     case MSG_DRAW:
 178         frame_callback (w, NULL, MSG_DRAW, 0, NULL);
 179         chown_refresh (WIDGET (w->owner));
 180         return MSG_HANDLED;
 181
 182     default:
 183         return frame_callback (w, sender, msg, parm, data);
 184     }
 185 }
 186
 187 /* --------------------------------------------------------------------------------------------- */
 188
 189 static WDialog *
 190 chown_dlg_create (WPanel * panel)
 191 {
 192     int single_set;
 193     WDialog *ch_dlg;
 194     WGroup *g;
 195     int lines, cols;
 196     int i, y;
 197     struct passwd *l_pass;
 198     struct group *l_grp;
 199
 200     single_set = (panel->marked < 2) ? 3 : 0;
 201     lines = GH + 4 + (single_set != 0 ? 2 : 4);
 202     cols = GW * 3 + 2 + 6;
 203
 204     ch_dlg =
 205         dlg_create (TRUE, 0, 0, lines, cols, WPOS_CENTER, FALSE, dialog_colors, NULL, NULL,
 206                     "[Chown]", _("Chown command"));
 207     g = GROUP (ch_dlg);
 208
 209     /* draw background */
 210     ch_dlg->bg->callback = chown_bg_callback;
 211
 212     group_add_widget (g, groupbox_new (2, 3, GH, GW, _("User name")));
 213     l_user = listbox_new (3, 4, GH - 2, GW - 2, FALSE, NULL);
 214     group_add_widget (g, l_user);
 215     /* add field for unknown names (numbers) */
 216     listbox_add_item (l_user, LISTBOX_APPEND_AT_END, 0, _("<Unknown user>"), NULL, FALSE);
 217     /* get and put user names in the listbox */
 218     setpwent ();
 219     while ((l_pass = getpwent ()) != NULL)
 220         listbox_add_item (l_user, LISTBOX_APPEND_SORTED, 0, l_pass->pw_name, NULL, FALSE);
 221     endpwent ();
 222
 223     group_add_widget (g, groupbox_new (2, 4 + GW, GH, GW, _("Group name")));
 224     l_group = listbox_new (3, 5 + GW, GH - 2, GW - 2, FALSE, NULL);
 225     group_add_widget (g, l_group);
 226     /* add field for unknown names (numbers) */
 227     listbox_add_item (l_group, LISTBOX_APPEND_AT_END, 0, _("<Unknown group>"), NULL, FALSE);
 228     /* get and put group names in the listbox */
 229     setgrent ();
 230     while ((l_grp = getgrent ()) != NULL)
 231         listbox_add_item (l_group, LISTBOX_APPEND_SORTED, 0, l_grp->gr_name, NULL, FALSE);
 232     endgrent ();
 233
 234     group_add_widget (g, groupbox_new (2, 5 + GW * 2, GH, GW, _("File")));
 235     /* add widgets for the file information */
 236     for (i = 0; i < LABELS; i++)
 237     {
 238         chown_label[i].l = label_new (chown_label[i].y, 7 + GW * 2, NULL);
 239         group_add_widget (g, chown_label[i].l);
 240     }
 241
 242     if (single_set == 0)
 243     {
 244         int x;
 245
 246         group_add_widget (g, hline_new (lines - chown_but[0].y - 1, -1, -1));
 247
 248         y = lines - chown_but[0].y;
 249         x = (cols - blen) / 2;
 250
 251         for (i = 0; i < BUTTONS - 2; i++)
 252         {
 253             group_add_widget (g, button_new (y, x, chown_but[i].ret_cmd, chown_but[i].flags,
 254                                              chown_but[i].text, NULL));
 255             x += chown_but[i].len + 1;
 256         }
 257     }
 258
 259     i = BUTTONS - 2;
 260     y = lines - chown_but[i].y;
 261     group_add_widget (g, hline_new (y - 1, -1, -1));
 262     group_add_widget (g, button_new (y, WIDGET (ch_dlg)->rect.cols / 2 - chown_but[i].len,
 263                                      chown_but[i].ret_cmd, chown_but[i].flags, chown_but[i].text,
 264                                      NULL));
 265     i++;
 266     group_add_widget (g, button_new (y, WIDGET (ch_dlg)->rect.cols / 2 + 1, chown_but[i].ret_cmd,
 267                                      chown_but[i].flags, chown_but[i].text, NULL));
 268
 269     /* select first listbox */
 270     widget_select (WIDGET (l_user));
 271
 272     return ch_dlg;
 273 }
 274
 275 /* --------------------------------------------------------------------------------------------- */
 276
 277 static void
 278 chown_done (gboolean need_update)
 279 {
 280     if (need_update)
 281         update_panels (UP_OPTIMIZE, UP_KEEPSEL);
 282     repaint_screen ();
 283 }
 284
 285 /* --------------------------------------------------------------------------------------------- */
 286
 287 static const GString *
 288 next_file (const WPanel * panel)
 289 {
 290     while (panel->dir.list[current_file].f.marked == 0)
 291         current_file++;
 292
 293     return panel->dir.list[current_file].fname;
 294 }
 295
 296 /* --------------------------------------------------------------------------------------------- */
 297
 298 static gboolean
 299 try_chown (const vfs_path_t * p, uid_t u, gid_t g)
 300 {
 301     const char *fname = NULL;
 302
 303     while (mc_chown (p, u, g) == -1 && !ignore_all)
 304     {
 305         int my_errno = errno;
 306         int result;
 307         char *msg;
 308
 309         if (fname == NULL)
 310             fname = x_basename (vfs_path_as_str (p));
 311         msg = g_strdup_printf (_("Cannot chown \"%s\"\n%s"), fname, unix_error_string (my_errno));
 312         result =
 313             query_dialog (MSG_ERROR, msg, D_ERROR, 4, _("&Ignore"), _("Ignore &all"), _("&Retry"),
 314                           _("&Cancel"));
 315         g_free (msg);
 316
 317         switch (result)
 318         {
 319         case 0:
 320             /* try next file */
 321             return TRUE;
 322
 323         case 1:
 324             ignore_all = TRUE;
 325             /* try next file */
 326             return TRUE;
 327
 328         case 2:
 329             /* retry this file */
 330             break;
 331
 332         case 3:
 333         default:
 334             /* stop remain files processing */
 335             return FALSE;
 336         }
 337     }
 338
 339     return TRUE;
 340 }
 341
 342 /* --------------------------------------------------------------------------------------------- */
 343
 344 static gboolean
 345 do_chown (WPanel * panel, const vfs_path_t * p, uid_t u, gid_t g)
 346 {
 347     gboolean ret;
 348
 349     ret = try_chown (p, u, g);
 350
 351     do_file_mark (panel, current_file, 0);
 352
 353     return ret;
 354 }
 355
 356 /* --------------------------------------------------------------------------------------------- */
 357
 358 static void
 359 apply_chowns (WPanel * panel, vfs_path_t * vpath, uid_t u, gid_t g)
 360 {
 361     gboolean ok;
 362
 363     if (!do_chown (panel, vpath, u, g))
 364         return;
 365
 366     do
 367     {
 368         const GString *fname;
 369         struct stat sf;
 370
 371         fname = next_file (panel);
 372         vpath = vfs_path_from_str (fname->str);
 373         ok = (mc_stat (vpath, &sf) == 0);
 374
 375         if (!ok)
 376         {
 377             /* if current file was deleted outside mc -- try next file */
 378             /* decrease panel->marked */
 379             do_file_mark (panel, current_file, 0);
 380
 381             /* try next file */
 382             ok = TRUE;
 383         }
 384         else
 385             ok = do_chown (panel, vpath, u, g);
 386
 387         vfs_path_free (vpath, TRUE);
 388     }
 389     while (ok && panel->marked != 0);
 390 }
 391
 392 /* --------------------------------------------------------------------------------------------- */
 393 /*** public functions ****************************************************************************/
 394 /* --------------------------------------------------------------------------------------------- */
 395
 396 void
 397 chown_cmd (WPanel * panel)
 398 {
 399     gboolean need_update;
 400     gboolean end_chown;
 401
 402     chown_init ();
 403
 404     current_file = 0;
 405     ignore_all = FALSE;
 406
 407     do
 408     {                           /* do while any files remaining */
 409         vfs_path_t *vpath;
 410         WDialog *ch_dlg;
 411         struct stat sf_stat;
 412         const GString *fname;
 413         int result;
 414         char buffer[BUF_TINY];
 415         uid_t new_user = (uid_t) (-1);
 416         gid_t new_group = (gid_t) (-1);
 417
 418         do_refresh ();
 419
 420         need_update = FALSE;
 421         end_chown = FALSE;
 422
 423         if (panel->marked != 0)
 424             fname = next_file (panel);  /* next marked file */
 425         else
 426             fname = panel_current_entry (panel)->fname; /* single file */
 427
 428         vpath = vfs_path_from_str (fname->str);
 429
 430         if (mc_stat (vpath, &sf_stat) != 0)
 431         {
 432             vfs_path_free (vpath, TRUE);
 433             break;
 434         }
 435
 436         ch_dlg = chown_dlg_create (panel);
 437
 438         /* select in listboxes */
 439         listbox_set_current (l_user, listbox_search_text (l_user, get_owner (sf_stat.st_uid)));
 440         listbox_set_current (l_group, listbox_search_text (l_group, get_group (sf_stat.st_gid)));
 441
 442         chown_label (0, str_trunc (fname->str, GW - 4));
 443         chown_label (1, str_trunc (get_owner (sf_stat.st_uid), GW - 4));
 444         chown_label (2, str_trunc (get_group (sf_stat.st_gid), GW - 4));
 445         size_trunc_len (buffer, GW - 4, sf_stat.st_size, 0, panels_options.kilobyte_si);
 446         chown_label (3, buffer);
 447         chown_label (4, string_perm (sf_stat.st_mode));
 448
 449         result = dlg_run (ch_dlg);
 450
 451         switch (result)
 452         {
 453         case B_CANCEL:
 454             end_chown = TRUE;
 455             break;
 456
 457         case B_ENTER:
 458         case B_SETALL:
 459             {
 460                 struct group *grp;
 461                 struct passwd *user;
 462                 char *text;
 463
 464                 listbox_get_current (l_group, &text, NULL);
 465                 grp = getgrnam (text);
 466                 if (grp != NULL)
 467                     new_group = grp->gr_gid;
 468                 listbox_get_current (l_user, &text, NULL);
 469                 user = getpwnam (text);
 470                 if (user != NULL)
 471                     new_user = user->pw_uid;
 472                 if (result == B_ENTER)
 473                 {
 474                     if (panel->marked <= 1)
 475                     {
 476                         /* single or last file */
 477                         if (mc_chown (vpath, new_user, new_group) == -1)
 478                             message (D_ERROR, MSG_ERROR, _("Cannot chown \"%s\"\n%s"),
 479                                      fname->str, unix_error_string (errno));
 480                         end_chown = TRUE;
 481                     }
 482                     else if (!try_chown (vpath, new_user, new_group))
 483                     {
 484                         /* stop multiple files processing */
 485                         result = B_CANCEL;
 486                         end_chown = TRUE;
 487                     }
 488                 }
 489                 else
 490                 {
 491                     apply_chowns (panel, vpath, new_user, new_group);
 492                     end_chown = TRUE;
 493                 }
 494
 495                 need_update = TRUE;
 496                 break;
 497             }
 498
 499         case B_SETUSR:
 500             {
 501                 struct passwd *user;
 502                 char *text;
 503
 504                 listbox_get_current (l_user, &text, NULL);
 505                 user = getpwnam (text);
 506                 if (user != NULL)
 507                 {
 508                     new_user = user->pw_uid;
 509                     apply_chowns (panel, vpath, new_user, new_group);
 510                     need_update = TRUE;
 511                     end_chown = TRUE;
 512                 }
 513                 break;
 514             }
 515
 516         case B_SETGRP:
 517             {
 518                 struct group *grp;
 519                 char *text;
 520
 521                 listbox_get_current (l_group, &text, NULL);
 522                 grp = getgrnam (text);
 523                 if (grp != NULL)
 524                 {
 525                     new_group = grp->gr_gid;
 526                     apply_chowns (panel, vpath, new_user, new_group);
 527                     need_update = TRUE;
 528                     end_chown = TRUE;
 529                 }
 530                 break;
 531             }
 532
 533         default:
 534             break;
 535         }
 536
 537         if (panel->marked != 0 && result != B_CANCEL)
 538         {
 539             do_file_mark (panel, current_file, 0);
 540             need_update = TRUE;
 541         }
 542
 543         vfs_path_free (vpath, TRUE);
 544
 545         widget_destroy (WIDGET (ch_dlg));
 546     }
 547     while (panel->marked != 0 && !end_chown);
 548
 549     chown_done (need_update);
 550 }
 551
 552 /* --------------------------------------------------------------------------------------------- */