src/ui_fileops.c

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #  include "config.h"
  24 #endif
  25
  26 #include <pwd.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <sys/param.h>
  32 #include <dirent.h>
  33 #include <utime.h>
  34
  35 #include <glib.h>
  36 #include <gtk/gtk.h>    /* for locale warning dialog */
  37
  38 #include "main.h"
  39 #include "ui_fileops.h"
  40
  41 #include "ui_utildlg.h" /* for locale warning dialog */
  42 #include "md5-util.h"
  43
  44 #include "filefilter.h"
  45 #include "layout.h"
  46 #include "utilops.h"
  47 #include "secure_save.h"
  48
  49 /*
  50  *-----------------------------------------------------------------------------
  51  * generic file information and manipulation routines (public)
  52  *-----------------------------------------------------------------------------
  53  */
  54
  55
  56
  57 void print_term(gboolean err, const gchar *text_utf8)
  58 {
  59         gchar *text_l;
  60
  61         text_l = g_locale_from_utf8(text_utf8, -1, NULL, NULL, NULL);
  62         if (err)
  63                 {
  64                 fputs((text_l) ? text_l : text_utf8, stderr);
  65                 }
  66         else
  67                 {
  68                 fputs((text_l) ? text_l : text_utf8, stdout);
  69                 }
  70         if(command_line && command_line->ssi)
  71                 secure_fputs(command_line->ssi, (text_l) ? text_l : text_utf8);
  72         g_free(text_l);
  73 }
  74
  75 static void encoding_dialog(const gchar *path)
  76 {
  77         static gboolean warned_user = FALSE;
  78         GenericDialog *gd;
  79         GString *string;
  80         const gchar *lc;
  81         const gchar *bf;
  82
  83         if (warned_user) return;
  84         warned_user = TRUE;
  85
  86         lc = getenv("LANG");
  87         bf = getenv("G_BROKEN_FILENAMES");
  88
  89         string = g_string_new("");
  90         g_string_append(string, _("One or more filenames are not encoded with the preferred locale character set.\n"));
  91         g_string_append_printf(string, _("Operations on, and display of these files with %s may not succeed.\n"), PACKAGE);
  92         g_string_append(string, "\n");
  93         g_string_append(string, _("If your filenames are not encoded in utf-8, try setting the environment variable G_BROKEN_FILENAMES=1\n"));
  94         if (bf)
  95                 g_string_append_printf(string, _("It appears G_BROKEN_FILENAMES is set to %s\n"), bf);
  96         else
  97                 g_string_append(string, _("It appears G_BROKEN_FILENAMES is not set\n"));
  98         g_string_append(string, "\n");
  99         g_string_append_printf(string, _("The locale appears to be set to \"%s\"\n(set by the LANG environment variable)\n"), (lc) ? lc : "undefined");
 100         if (lc && (strstr(lc, "UTF-8") || strstr(lc, "utf-8")))
 101                 {
 102                 gchar *name;
 103                 name = g_convert(path, -1, "UTF-8", "ISO-8859-1", NULL, NULL, NULL);
 104                 string = g_string_append(string, _("\nPreferred encoding appears to be UTF-8, however the file:\n"));
 105                 g_string_append_printf(string, "\"%s\"\n", (name) ? name : _("[name not displayable]"));
 106
 107                 if (g_utf8_validate(path, -1, NULL))
 108                         g_string_append_printf(string, _("\"%s\" is encoded in valid UTF-8."), (name) ? name : _("[name not displayable]"));
 109                 else
 110                         g_string_append_printf(string, _("\"%s\" is not encoded in valid UTF-8."), (name) ? name : _("[name not displayable]"));
 111                 g_string_append(string, "\n");
 112                 g_free(name);
 113                 }
 114
 115         gd = generic_dialog_new(_("Filename encoding locale mismatch"),
 116                                 "locale warning", NULL, TRUE, NULL, NULL);
 117         generic_dialog_add_button(gd, GTK_STOCK_CLOSE, NULL, NULL, TRUE);
 118
 119         generic_dialog_add_message(gd, GTK_STOCK_DIALOG_WARNING,
 120                                    _("Filename encoding locale mismatch"), string->str, TRUE);
 121
 122         gtk_widget_show(gd->dialog);
 123
 124         g_string_free(string, TRUE);
 125 }
 126
 127 #if GQ_DEBUG_PATH_UTF8
 128 gchar *path_to_utf8_debug(const gchar *path, const gchar *file, gint line)
 129 #else
 130 gchar *path_to_utf8(const gchar *path)
 131 #endif
 132 {
 133         gchar *utf8;
 134         GError *error = NULL;
 135
 136         if (!path) return NULL;
 137
 138         utf8 = g_filename_to_utf8(path, -1, NULL, NULL, &error);
 139         if (error)
 140                 {
 141 #if GQ_DEBUG_PATH_UTF8
 142                 log_printf("%s:%d: Unable to convert filename to UTF-8:\n%s\n%s\n", file, line, path, error->message);
 143 #else
 144                 log_printf("Unable to convert filename to UTF-8:\n%s\n%s\n", path, error->message);
 145 #endif
 146                 g_error_free(error);
 147                 encoding_dialog(path);
 148                 }
 149         if (!utf8)
 150                 {
 151                 /* just let it through, but bad things may happen */
 152                 utf8 = g_strdup(path);
 153                 }
 154
 155         return utf8;
 156 }
 157
 158 #if GQ_DEBUG_PATH_UTF8
 159 gchar *path_from_utf8_debug(const gchar *utf8, const gchar *file, gint line)
 160 #else
 161 gchar *path_from_utf8(const gchar *utf8)
 162 #endif
 163 {
 164         gchar *path;
 165         GError *error = NULL;
 166
 167         if (!utf8) return NULL;
 168
 169         path = g_filename_from_utf8(utf8, -1, NULL, NULL, &error);
 170         if (error)
 171                 {
 172 #if GQ_DEBUG_PATH_UTF8
 173                 log_printf("%s:%d: Unable to convert filename to locale from UTF-8:\n%s\n%s\n", file, line, utf8, error->message);
 174 #else
 175                 log_printf("Unable to convert filename to locale from UTF-8:\n%s\n%s\n", utf8, error->message);
 176 #endif
 177                 g_error_free(error);
 178                 }
 179         if (!path)
 180                 {
 181                 /* if invalid UTF-8, text probaby still in original form, so just copy it */
 182                 path = g_strdup(utf8);
 183                 }
 184
 185         return path;
 186 }
 187
 188 /* first we try the HOME environment var, if that doesn't work, we try g_get_homedir(). */
 189 const gchar *homedir(void)
 190 {
 191         static gchar *home = NULL;
 192
 193         if (!home)
 194                 home = path_to_utf8(getenv("HOME"));
 195
 196         if (!home)
 197                 home = path_to_utf8(g_get_home_dir());
 198
 199         DEBUG_1("Home directory: %s", home);
 200
 201         return home;
 202 }
 203
 204 static gchar *xdg_dir_get(const gchar *key, const gchar *fallback)
 205 {
 206         gchar *dir = getenv(key);
 207
 208         if (!dir || dir[0] == '\0')
 209                 {
 210                 return g_build_filename(homedir(), fallback, NULL);
 211                 }
 212
 213         DEBUG_1("Got xdg %s: %s", key, dir);
 214
 215         return path_to_utf8(dir);
 216 }
 217
 218 const gchar *xdg_data_home_get(void)
 219 {
 220         static const gchar *xdg_data_home = NULL;
 221
 222         if (xdg_data_home) return xdg_data_home;
 223
 224         xdg_data_home = xdg_dir_get("XDG_DATA_HOME", ".local/share");
 225
 226         return xdg_data_home;
 227 }
 228
 229 const gchar *xdg_config_home_get(void)
 230 {
 231         static const gchar *xdg_config_home = NULL;
 232
 233         if (xdg_config_home) return xdg_config_home;
 234
 235         xdg_config_home = xdg_dir_get("XDG_CONFIG_HOME", ".config");
 236
 237         return xdg_config_home;
 238 }
 239
 240 const gchar *xdg_cache_home_get(void)
 241 {
 242         static const gchar *xdg_cache_home = NULL;
 243
 244         if (xdg_cache_home) return xdg_cache_home;
 245
 246         xdg_cache_home = xdg_dir_get("XDG_CACHE_HOME", ".cache");
 247
 248         return xdg_cache_home;
 249 }
 250
 251 const gchar *get_rc_dir(void)
 252 {
 253         static gchar *rc_dir = NULL;
 254
 255         if (rc_dir) return rc_dir;
 256
 257         if (USE_XDG)
 258                 {
 259                 rc_dir = g_build_filename(xdg_config_home_get(), GQ_APPNAME_LC, NULL);
 260                 }
 261         else
 262                 {
 263                 rc_dir = g_build_filename(homedir(), GQ_RC_DIR, NULL);
 264                 }
 265
 266         return rc_dir;
 267 }
 268
 269 const gchar *get_collections_dir(void)
 270 {
 271         static gchar *collections_dir = NULL;
 272
 273         if (collections_dir) return collections_dir;
 274
 275         if (USE_XDG)
 276                 {
 277                 collections_dir = g_build_filename(xdg_data_home_get(), GQ_APPNAME_LC, GQ_COLLECTIONS_DIR, NULL);
 278                 }
 279         else
 280                 {
 281                 collections_dir = g_build_filename(get_rc_dir(), GQ_COLLECTIONS_DIR, NULL);
 282                 }
 283
 284         return collections_dir;
 285 }
 286
 287 const gchar *get_trash_dir(void)
 288 {
 289         static gchar *trash_dir = NULL;
 290
 291         if (trash_dir) return trash_dir;
 292
 293         if (USE_XDG)
 294                 {
 295                 trash_dir = g_build_filename(xdg_data_home_get(), GQ_APPNAME_LC, GQ_TRASH_DIR, NULL);
 296                 }
 297         else
 298                 {
 299                 trash_dir = g_build_filename(get_rc_dir(), GQ_TRASH_DIR, NULL);
 300         }
 301
 302         return trash_dir;
 303 }
 304
 305 const gchar *get_window_layouts_dir(void)
 306 {
 307         static gchar *window_layouts_dir = NULL;
 308
 309         if (window_layouts_dir) return window_layouts_dir;
 310
 311         if (USE_XDG)
 312                 {
 313                 window_layouts_dir = g_build_filename(xdg_config_home_get(), GQ_APPNAME_LC, GQ_WINDOW_LAYOUTS_DIR, NULL);
 314                 }
 315         else
 316                 {
 317                 window_layouts_dir = g_build_filename(get_rc_dir(), GQ_WINDOW_LAYOUTS_DIR, NULL);
 318                 }
 319
 320         return window_layouts_dir;
 321 }
 322
 323 gboolean stat_utf8(const gchar *s, struct stat *st)
 324 {
 325         gchar *sl;
 326         gboolean ret;
 327
 328         if (!s) return FALSE;
 329         sl = path_from_utf8(s);
 330         ret = (stat(sl, st) == 0);
 331         g_free(sl);
 332
 333         return ret;
 334 }
 335
 336 gboolean lstat_utf8(const gchar *s, struct stat *st)
 337 {
 338         gchar *sl;
 339         gboolean ret;
 340
 341         if (!s) return FALSE;
 342         sl = path_from_utf8(s);
 343         ret = (lstat(sl, st) == 0);
 344         g_free(sl);
 345
 346         return ret;
 347 }
 348
 349 gboolean isname(const gchar *s)
 350 {
 351         struct stat st;
 352
 353         return stat_utf8(s, &st);
 354 }
 355
 356 gboolean isfile(const gchar *s)
 357 {
 358         struct stat st;
 359
 360         return (stat_utf8(s, &st) && S_ISREG(st.st_mode));
 361 }
 362
 363 gboolean isdir(const gchar *s)
 364 {
 365         struct stat st;
 366
 367         return (stat_utf8(s, &st) && S_ISDIR(st.st_mode));
 368 }
 369
 370 gboolean islink(const gchar *s)
 371 {
 372         struct stat st;
 373
 374         return (lstat_utf8(s, &st) && S_ISLNK(st.st_mode));
 375 }
 376
 377 gint64 filesize(const gchar *s)
 378 {
 379         struct stat st;
 380
 381         if (!stat_utf8(s, &st)) return 0;
 382         return st.st_size;
 383 }
 384
 385 time_t filetime(const gchar *s)
 386 {
 387         struct stat st;
 388
 389         if (!stat_utf8(s, &st)) return 0;
 390         return st.st_mtime;
 391 }
 392
 393 gboolean filetime_set(const gchar *s, time_t tval)
 394 {
 395         gboolean ret = FALSE;
 396
 397         if (tval > 0)
 398                 {
 399                 struct utimbuf ut;
 400                 gchar *sl;
 401
 402                 ut.actime = ut.modtime = tval;
 403
 404                 sl = path_from_utf8(s);
 405                 ret = (utime(sl, &ut) == 0);
 406                 g_free(sl);
 407                 }
 408
 409         return ret;
 410 }
 411
 412 gboolean is_readable_file(const gchar *s)
 413 {
 414         if (!s || !s[0] || !isfile(s)) return FALSE;
 415         return access_file(s, R_OK);
 416 }
 417
 418 gboolean access_file(const gchar *s, gint mode)
 419 {
 420         gchar *sl;
 421         gint ret;
 422
 423         if (!s || !s[0]) return FALSE;
 424
 425         sl = path_from_utf8(s);
 426         ret = (access(sl, mode) == 0);
 427         g_free(sl);
 428
 429         return ret;
 430 }
 431
 432 gboolean unlink_file(const gchar *s)
 433 {
 434         gchar *sl;
 435         gboolean ret;
 436
 437         if (!s) return FALSE;
 438
 439         sl = path_from_utf8(s);
 440         ret = (unlink(sl) == 0);
 441         g_free(sl);
 442
 443         return ret;
 444 }
 445
 446 gboolean symlink_utf8(const gchar *source, const gchar *target)
 447 {
 448         gchar *sl;
 449         gchar *tl;
 450         gboolean ret;
 451
 452         if (!source || !target) return FALSE;
 453
 454         sl = path_from_utf8(source);
 455         tl = path_from_utf8(target);
 456
 457         ret = (symlink(sl, tl) == 0);
 458
 459         g_free(sl);
 460         g_free(tl);
 461
 462         return ret;
 463 }
 464
 465 gboolean mkdir_utf8(const gchar *s, gint mode)
 466 {
 467         gchar *sl;
 468         gboolean ret;
 469
 470         if (!s) return FALSE;
 471
 472         sl = path_from_utf8(s);
 473         ret = (mkdir(sl, mode) == 0);
 474         g_free(sl);
 475         return ret;
 476 }
 477
 478 gboolean rmdir_utf8(const gchar *s)
 479 {
 480         gchar *sl;
 481         gboolean ret;
 482
 483         if (!s) return FALSE;
 484
 485         sl = path_from_utf8(s);
 486         ret = (rmdir(sl) == 0);
 487         g_free(sl);
 488
 489         return ret;
 490 }
 491
 492 gboolean copy_file_attributes(const gchar *s, const gchar *t, gint perms, gint mtime)
 493 {
 494         struct stat st;
 495         gchar *sl, *tl;
 496         gboolean ret = FALSE;
 497
 498         if (!s || !t) return FALSE;
 499
 500         sl = path_from_utf8(s);
 501         tl = path_from_utf8(t);
 502
 503         if (stat(sl, &st) == 0)
 504                 {
 505                 struct utimbuf tb;
 506
 507                 ret = TRUE;
 508
 509                 /* set the dest file attributes to that of source (ignoring errors) */
 510
 511                 if (perms)
 512                         {
 513                         ret = chown(tl, st.st_uid, st.st_gid);
 514                         /* Ignores chown errors, while still doing chown
 515                            (so root still can copy files preserving ownership) */
 516                         ret = TRUE;
 517                         if (chmod(tl, st.st_mode) < 0) {
 518                             struct stat st2;
 519                             if (stat(tl, &st2) != 0 || st2.st_mode != st.st_mode) {
 520                                 ret = FALSE;
 521                             }
 522                         }
 523                         }
 524
 525                 tb.actime = st.st_atime;
 526                 tb.modtime = st.st_mtime;
 527                 if (mtime && utime(tl, &tb) < 0) ret = FALSE;
 528                 }
 529
 530         g_free(sl);
 531         g_free(tl);
 532
 533         return ret;
 534 }
 535
 536 /* paths are in filesystem encoding */
 537 static gboolean hard_linked(const gchar *a, const gchar *b)
 538 {
 539         struct stat sta;
 540         struct stat stb;
 541
 542         if (stat(a, &sta) !=  0 || stat(b, &stb) != 0) return FALSE;
 543
 544         return (sta.st_dev == stb.st_dev &&
 545                 sta.st_ino == stb.st_ino);
 546 }
 547
 548 gboolean copy_file(const gchar *s, const gchar *t)
 549 {
 550         FILE *fi = NULL;
 551         FILE *fo = NULL;
 552         gchar *sl = NULL;
 553         gchar *tl = NULL;
 554         gchar *randname = NULL;
 555         gchar buf[16384];
 556         size_t b;
 557         gint ret = FALSE;
 558         gint fd = -1;
 559
 560         sl = path_from_utf8(s);
 561         tl = path_from_utf8(t);
 562
 563         if (hard_linked(sl, tl))
 564                 {
 565                 ret = TRUE;
 566                 goto end;
 567                 }
 568
 569         /* Do not dereference absolute symlinks, but copy them "as is".
 570         * For a relative symlink, we don't know how to properly change it when
 571         * copied/moved to another dir to keep pointing it to same target as
 572         * a relative symlink, so we turn it into absolute symlink using
 573         * realpath() instead. */
 574         struct stat st;
 575         if (lstat_utf8(sl, &st) && S_ISLNK(st.st_mode))
 576                 {
 577                 gchar *link_target;
 578                 ssize_t i;
 579
 580                 link_target = g_malloc(st.st_size + 1);
 581                 i = readlink(sl, link_target, st.st_size);
 582                 if (i<0)
 583                         {
 584                         g_free(link_target);
 585                         goto orig_copy;  // try a "normal" copy
 586                         }
 587                 link_target[st.st_size] = '\0';
 588
 589                 if (link_target[0] != G_DIR_SEPARATOR) // if it is a relative symlink
 590                         {
 591                         gchar *absolute;
 592
 593                         gchar *lastslash = strrchr(sl, G_DIR_SEPARATOR);
 594                         gint len = lastslash - sl + 1;
 595
 596                         absolute = g_malloc(len + st.st_size + 1);
 597                         strncpy(absolute, sl, len);
 598                         strcpy(absolute + len, link_target);
 599                         g_free(link_target);
 600                         link_target = absolute;
 601
 602                         gchar *realPath;
 603                         realPath = realpath(link_target, NULL);
 604
 605                         if (realPath != NULL) // successfully resolved into an absolute path
 606                                 {
 607                                 g_free(link_target);
 608                                 link_target = g_strdup(realPath);
 609                                 g_free(realPath);
 610                                 }
 611                         else                 // could not get absolute path, got some error instead
 612                                 {
 613                                 g_free(link_target);
 614                                 goto orig_copy;  // so try a "normal" copy
 615                                 }
 616                         }
 617
 618                 if (stat_utf8(tl, &st)) unlink(tl); // first try to remove directory entry in destination directory if such entry exists
 619
 620                 gint success = (symlink(link_target, tl) == 0);
 621                 g_free(link_target);
 622
 623                 if (success)
 624                         {
 625                         ret = TRUE;
 626                         goto end;
 627                         }
 628                 } // if symlink did not succeed, continue on to try a copy procedure
 629         orig_copy:
 630
 631         fi = fopen(sl, "rb");
 632         if (!fi) goto end;
 633
 634         /* First we write to a temporary file, then we rename it on success,
 635            and attributes from original file are copied */
 636         randname = g_strconcat(tl, ".tmp_XXXXXX", NULL);
 637         if (!randname) goto end;
 638
 639         fd = g_mkstemp(randname);
 640         if (fd == -1) goto end;
 641
 642         fo = fdopen(fd, "wb");
 643         if (!fo) {
 644                 close(fd);
 645                 goto end;
 646         }
 647
 648         while ((b = fread(buf, sizeof(gchar), sizeof(buf), fi)) && b != 0)
 649                 {
 650                 if (fwrite(buf, sizeof(gchar), b, fo) != b)
 651                         {
 652                         unlink(randname);
 653                         goto end;
 654                         }
 655                 }
 656
 657         fclose(fi); fi = NULL;
 658         fclose(fo); fo = NULL;
 659
 660         if (rename(randname, tl) < 0) {
 661                 unlink(randname);
 662                 goto end;
 663         }
 664
 665         ret = copy_file_attributes(s, t, TRUE, TRUE);
 666
 667 end:
 668         if (fi) fclose(fi);
 669         if (fo) fclose(fo);
 670         if (sl) g_free(sl);
 671         if (tl) g_free(tl);
 672         if (randname) g_free(randname);
 673         return ret;
 674 }
 675
 676 gboolean move_file(const gchar *s, const gchar *t)
 677 {
 678         gchar *sl, *tl;
 679         gboolean ret = TRUE;
 680
 681         if (!s || !t) return FALSE;
 682
 683         sl = path_from_utf8(s);
 684         tl = path_from_utf8(t);
 685         if (rename(sl, tl) < 0)
 686                 {
 687                 /* this may have failed because moving a file across filesystems
 688                 was attempted, so try copy and delete instead */
 689                 if (copy_file(s, t))
 690                         {
 691                         if (unlink(sl) < 0)
 692                                 {
 693                                 /* err, now we can't delete the source file so return FALSE */
 694                                 ret = FALSE;
 695                                 }
 696                         }
 697                 else
 698                         {
 699                         ret = FALSE;
 700                         }
 701                 }
 702         g_free(sl);
 703         g_free(tl);
 704
 705         return ret;
 706 }
 707
 708 gboolean rename_file(const gchar *s, const gchar *t)
 709 {
 710         gchar *sl, *tl;
 711         gboolean ret;
 712
 713         if (!s || !t) return FALSE;
 714
 715         sl = path_from_utf8(s);
 716         tl = path_from_utf8(t);
 717         ret = (rename(sl, tl) == 0);
 718         g_free(sl);
 719         g_free(tl);
 720
 721         return ret;
 722 }
 723
 724 gchar *get_current_dir(void)
 725 {
 726         gchar *pathl;
 727         gchar *path8;
 728
 729         pathl = g_get_current_dir();
 730         path8 = path_to_utf8(pathl);
 731         g_free(pathl);
 732
 733         return path8;
 734 }
 735
 736 void string_list_free(GList *list)
 737 {
 738         g_list_foreach(list, (GFunc)g_free, NULL);
 739         g_list_free(list);
 740 }
 741
 742 GList *string_list_copy(const GList *list)
 743 {
 744         GList *new_list = NULL;
 745         GList *work = (GList *) list;
 746
 747         while (work)
 748                 {
 749                 gchar *path;
 750
 751                 path = work->data;
 752                 work = work->next;
 753
 754                 new_list = g_list_prepend(new_list, g_strdup(path));
 755                 }
 756
 757         return g_list_reverse(new_list);
 758 }
 759
 760 gchar *unique_filename(const gchar *path, const gchar *ext, const gchar *divider, gboolean pad)
 761 {
 762         gchar *unique;
 763         gint n = 1;
 764
 765         if (!ext) ext = "";
 766         if (!divider) divider = "";
 767
 768         unique = g_strconcat(path, ext, NULL);
 769         while (isname(unique))
 770                 {
 771                 g_free(unique);
 772                 if (pad)
 773                         {
 774                         unique = g_strdup_printf("%s%s%03d%s", path, divider, n, ext);
 775                         }
 776                 else
 777                         {
 778                         unique = g_strdup_printf("%s%s%d%s", path, divider, n, ext);
 779                         }
 780                 n++;
 781                 if (n > 999)
 782                         {
 783                         /* well, we tried */
 784                         g_free(unique);
 785                         return NULL;
 786                         }
 787                 }
 788
 789         return unique;
 790 }
 791
 792 gchar *unique_filename_simple(const gchar *path)
 793 {
 794         gchar *unique;
 795         const gchar *name;
 796         const gchar *ext;
 797
 798         if (!path) return NULL;
 799
 800         name = filename_from_path(path);
 801         if (!name) return NULL;
 802
 803         ext = registered_extension_from_path(name);
 804
 805         if (!ext)
 806                 {
 807                 unique = unique_filename(path, NULL, "_", TRUE);
 808                 }
 809         else
 810                 {
 811                 gchar *base;
 812
 813                 base = remove_extension_from_path(path);
 814                 unique = unique_filename(base, ext, "_", TRUE);
 815                 g_free(base);
 816                 }
 817
 818         return unique;
 819 }
 820
 821 const gchar *filename_from_path(const gchar *path)
 822 {
 823         const gchar *base;
 824
 825         if (!path) return NULL;
 826
 827         base = strrchr(path, G_DIR_SEPARATOR);
 828         if (base) return base + 1;
 829
 830         return path;
 831 }
 832
 833 gchar *remove_level_from_path(const gchar *path)
 834 {
 835         const gchar *base;
 836
 837         if (!path) return g_strdup("");
 838
 839         base = strrchr(path, G_DIR_SEPARATOR);
 840         /* Take account of a file being in the root ( / ) folder - ensure the returned value
 841          * is at least one character long */
 842         if (base) return g_strndup(path, (strlen(path)-strlen(base)) == 0 ? 1 : (strlen(path)-strlen(base)));
 843
 844         return g_strdup("");
 845 }
 846
 847 gboolean file_extension_match(const gchar *path, const gchar *ext)
 848 {
 849         gint p;
 850         gint e;
 851
 852         if (!path) return FALSE;
 853         if (!ext) return TRUE;
 854
 855         p = strlen(path);
 856         e = strlen(ext);
 857
 858         /* FIXME: utf8 */
 859         return (p > e && g_ascii_strncasecmp(path + p - e, ext, e) == 0);
 860 }
 861
 862 gchar *remove_extension_from_path(const gchar *path)
 863 {
 864         const gchar *reg_ext;
 865
 866         if (!path) return NULL;
 867
 868         reg_ext = registered_extension_from_path(path);
 869
 870         return g_strndup(path, strlen(path) - (reg_ext == NULL ? 0 : strlen(reg_ext)));
 871 }
 872
 873 void parse_out_relatives(gchar *path)
 874 {
 875         gint s, t;
 876
 877         if (!path) return;
 878
 879         s = t = 0;
 880
 881         while (path[s] != '\0')
 882                 {
 883                 if (path[s] == G_DIR_SEPARATOR && path[s+1] == '.')
 884                         {
 885                         /* /. occurence, let's see more */
 886                         gint p = s + 2;
 887
 888                         if (path[p] == G_DIR_SEPARATOR || path[p] == '\0')
 889                                 {
 890                                 /* /./ or /., just skip this part */
 891                                 s = p;
 892                                 continue;
 893                                 }
 894                         else if (path[p] == '.' && (path[p+1] == G_DIR_SEPARATOR || path[p+1] == '\0'))
 895                                 {
 896                                 /* /../ or /.., remove previous part, ie. /a/b/../ becomes /a/ */
 897                                 s = p + 1;
 898                                 if (t > 0) t--;
 899                                 while (path[t] != G_DIR_SEPARATOR && t > 0) t--;
 900                                 continue;
 901                                 }
 902                         }
 903
 904                 if (s != t) path[t] = path[s];
 905                 t++;
 906                 s++;
 907                 }
 908
 909         if (t == 0 && path[t] == G_DIR_SEPARATOR) t++;
 910         if (t > 1 && path[t-1] == G_DIR_SEPARATOR) t--;
 911         path[t] = '\0';
 912 }
 913
 914 gboolean file_in_path(const gchar *name)
 915 {
 916         gchar *path;
 917         gchar *namel;
 918         gint p, l;
 919         gboolean ret = FALSE;
 920
 921         if (!name) return FALSE;
 922         path = g_strdup(getenv("PATH"));
 923         if (!path) return FALSE;
 924         namel = path_from_utf8(name);
 925
 926         p = 0;
 927         l = strlen(path);
 928         while (p < l && !ret)
 929                 {
 930                 gchar *f;
 931                 gint e = p;
 932                 while (path[e] != ':' && path[e] != '\0') e++;
 933                 path[e] = '\0';
 934                 e++;
 935                 f = g_build_filename(path + p, namel, NULL);
 936                 if (isfile(f)) ret = TRUE;
 937                 g_free(f);
 938                 p = e;
 939                 }
 940         g_free(namel);
 941         g_free(path);
 942
 943         return ret;
 944 }
 945
 946 gboolean recursive_mkdir_if_not_exists(const gchar *path, mode_t mode)
 947 {
 948         if (!path) return FALSE;
 949
 950         if (!isdir(path))
 951                 {
 952                 gchar *npath = g_strdup(path);
 953                 gchar *p = npath;
 954
 955                 while (p[0] != '\0')
 956                         {
 957                         p++;
 958                         if (p[0] == G_DIR_SEPARATOR || p[0] == '\0')
 959                                 {
 960                                 gboolean end = TRUE;
 961
 962                                 if (p[0] != '\0')
 963                                         {
 964                                         p[0] = '\0';
 965                                         end = FALSE;
 966                                         }
 967
 968                                 if (!isdir(npath))
 969                                         {
 970                                         DEBUG_1("creating sub dir:%s", npath);
 971                                         if (!mkdir_utf8(npath, mode))
 972                                                 {
 973                                                 log_printf("create dir failed: %s\n", npath);
 974                                                 g_free(npath);
 975                                                 return FALSE;
 976                                                 }
 977                                         }
 978
 979                                 if (!end) p[0] = G_DIR_SEPARATOR;
 980                                 }
 981                         }
 982                 g_free(npath);
 983                 }
 984
 985         return TRUE;
 986 }
 987
 988 /* does filename utf8 to filesystem encoding first */
 989 gboolean md5_get_digest_from_file_utf8(const gchar *path, guchar digest[16])
 990 {
 991         gboolean success;
 992         gchar *pathl;
 993
 994         pathl = path_from_utf8(path);
 995         success = md5_get_digest_from_file(pathl, digest);
 996         g_free(pathl);
 997
 998         return success;
 999 }
1000
1001
1002 gchar *md5_text_from_file_utf8(const gchar *path, const gchar *error_text)
1003 {
1004         guchar digest[16];
1005
1006         if (!md5_get_digest_from_file_utf8(path, digest)) return g_strdup(error_text);
1007
1008         return md5_digest_to_text(digest);
1009 }
1010
1011 /* Download web file
1012  */
1013 typedef struct _WebData WebData;
1014 struct _WebData
1015 {
1016         GenericDialog *gd;
1017         GCancellable *cancellable;
1018         LayoutWindow *lw;
1019
1020         GtkWidget *progress;
1021         GFile *tmp_g_file;
1022         GFile *web_file;
1023 };
1024
1025 static void web_file_async_ready_cb(GObject *source_object, GAsyncResult *res, gpointer data)
1026 {
1027         GError *error = NULL;
1028         WebData* web = data;
1029         gchar *tmp_filename;
1030
1031         if (!g_cancellable_is_cancelled(web->cancellable))
1032                 {
1033                 generic_dialog_close(web->gd);
1034                 }
1035
1036         if (g_file_copy_finish(G_FILE(source_object), res, &error))
1037                 {
1038                 tmp_filename = g_file_get_parse_name(web->tmp_g_file);
1039                 g_free(tmp_filename);
1040                 layout_set_path(web->lw, g_file_get_path(web->tmp_g_file));
1041                 }
1042         else
1043                 {
1044                 file_util_warning_dialog(_("Web file download failed"), error->message, GTK_STOCK_DIALOG_ERROR, NULL);
1045                 }
1046
1047         g_object_unref(web->tmp_g_file);
1048         web->tmp_g_file = NULL;
1049         g_object_unref(web->cancellable);
1050         g_object_unref(web->web_file);
1051 }
1052
1053 static void web_file_progress_cb(goffset current_num_bytes, goffset total_num_bytes, gpointer data)
1054 {
1055         WebData* web = data;
1056
1057         if (!g_cancellable_is_cancelled(web->cancellable))
1058                 {
1059                 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(web->progress), (gdouble)current_num_bytes / total_num_bytes);
1060                 }
1061 }
1062
1063 static void download_web_file_cancel_button_cb(GenericDialog *gd, gpointer data)
1064 {
1065         WebData* web = data;
1066         GError *error = NULL;
1067
1068         g_cancellable_cancel(web->cancellable);
1069 }
1070
1071 gboolean download_web_file(const gchar *text, gboolean minimized, gpointer data)
1072 {
1073         gchar *scheme;
1074         LayoutWindow *lw = data;
1075         gchar *tmp_dir;
1076         GError *error = NULL;
1077         WebData *web;
1078         gchar *base;
1079         gboolean ret;
1080         gchar *message;
1081         FileFormatClass format_class;
1082
1083         scheme = g_uri_parse_scheme(text);
1084         if (g_strcmp0("http", scheme) == 0 || g_strcmp0("https", scheme) == 0)
1085                 {
1086                 format_class = filter_file_get_class(text);
1087
1088                 if (format_class == FORMAT_CLASS_IMAGE || format_class == FORMAT_CLASS_RAWIMAGE || format_class == FORMAT_CLASS_VIDEO || format_class == FORMAT_CLASS_DOCUMENT)
1089                         {
1090                         tmp_dir = g_dir_make_tmp("geeqie_XXXXXX", &error);
1091                         if (error)
1092                                 {
1093                                 log_printf("Error: could not create temporary file n%s\n", error->message);
1094                                 g_error_free(error);
1095                                 error = NULL;
1096                                 ret = TRUE;
1097                                 }
1098                         else
1099                                 {
1100                                 web = g_new0(WebData, 1);
1101                                 web->lw = lw;
1102
1103                                 web->web_file = g_file_new_for_uri(text);
1104
1105                                 base = g_strdup(g_file_get_basename(web->web_file));
1106                                 web->tmp_g_file = g_file_new_for_path(g_build_filename(tmp_dir, base, NULL));
1107
1108                                 web->gd = generic_dialog_new(_("Download web file"), "download_web_file", NULL, TRUE, download_web_file_cancel_button_cb, web);
1109
1110                                 message = g_strconcat(_("Downloading "), base, NULL);
1111                                 generic_dialog_add_message(web->gd, GTK_STOCK_DIALOG_INFO, message, NULL, FALSE);
1112
1113                                 web->progress = gtk_progress_bar_new();
1114                                 gtk_box_pack_start(GTK_BOX(web->gd->vbox), web->progress, FALSE, FALSE, 0);
1115                                 gtk_widget_show(web->progress);
1116                                 if (minimized)
1117                                         {
1118                                         gtk_window_iconify(GTK_WINDOW(web->gd->dialog));
1119                                         }
1120
1121                                 gtk_widget_show(web->gd->dialog);
1122                                 web->cancellable = g_cancellable_new();
1123                                 g_file_copy_async(web->web_file, web->tmp_g_file, G_FILE_COPY_OVERWRITE, G_PRIORITY_LOW, web->cancellable, web_file_progress_cb, web, web_file_async_ready_cb, web);
1124
1125                                 g_free(base);
1126                                 g_free(message);
1127                                 ret = TRUE;
1128                                 }
1129                         }
1130                 }
1131         else
1132                 {
1133                 ret = FALSE;
1134                 }
1135
1136         g_free(scheme);
1137         return ret;
1138
1139 }
1140 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */