ROX-Filer/src/run.c

   1 /*
   2  * ROX-Filer, filer for the ROX desktop project
   3  * Copyright (C) 2006, Thomas Leonard and others (see changelog for details).
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by the Free
   7  * Software Foundation; either version 2 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  17  * Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 /* run.c */
  21
  22 #include "config.h"
  23
  24 #include <gio/gio.h>
  25 #include <errno.h>
  26 #include <string.h>
  27 #include <sys/param.h>
  28
  29 #include "global.h"
  30
  31 #include "run.h"
  32 #include "support.h"
  33 #include "gui_support.h"
  34 #include "filer.h"
  35 #include "display.h"
  36 #include "main.h"
  37 #include "type.h"
  38 #include "dir.h"
  39 #include "diritem.h"
  40 #include "action.h"
  41 #include "icon.h"
  42 #include "choices.h"
  43
  44 /* Static prototypes */
  45 static void write_data(gpointer data, gint fd, GdkInputCondition cond);
  46 static gboolean follow_symlink(GFile *path,
  47                                FilerWindow *filer_window,
  48                                FilerWindow *src_window);
  49 static gboolean open_file(GFile *path, MIME_type *type);
  50 static void open_mountpoint(GFile *full_path, DirItem *item,
  51                             FilerWindow *filer_window, FilerWindow *src_window,
  52                             gboolean edit);
  53 static gboolean run_desktop(const char *full_path,
  54                             const char **args, const char *dir);
  55 static gboolean type_open(GFile *path, MIME_type *type);
  56
  57 typedef struct _PipedData PipedData;
  58
  59 struct _PipedData
  60 {
  61         guchar          *data;
  62         gint            tag;
  63         gulong          sent;
  64         gulong          length;
  65 };
  66
  67
  68 /****************************************************************
  69  *                      EXTERNAL INTERFACE                      *
  70  ****************************************************************/
  71
  72
  73 /* An application has been double-clicked (or run in some other way) */
  74 void run_app(const char *path)
  75 {
  76         GString *apprun;
  77         const char *argv[] = {NULL, NULL};
  78
  79         apprun = g_string_new(path);
  80         argv[0] = g_string_append(apprun, "/AppRun")->str;
  81
  82         rox_spawn(home_dir, argv);
  83
  84         g_string_free(apprun, TRUE);
  85 }
  86
  87 /* Execute this program, passing all the URIs in the list as arguments.
  88  * URIs that are files on the local machine will be passed as simple
  89  * pathnames. The uri_list should be freed after this function returns.
  90  */
  91 void run_with_files(const char *path, GList *uri_list)
  92 {
  93         const char      **argv;
  94         int             argc = 0, i;
  95         struct stat     info;
  96         MIME_type       *type;
  97
  98         if (stat(path, &info))
  99         {
 100                 delayed_error(_("Program %s not found - deleted?"), path);
 101                 return;
 102         }
 103
 104         argv = g_malloc(sizeof(char *) * (g_list_length(uri_list) + 2));
 105
 106         if (S_ISDIR(info.st_mode))
 107                 argv[argc++] = make_path(path, "AppRun");
 108         else
 109                 argv[argc++] = path;
 110
 111         while (uri_list)
 112         {
 113                 const EscapedPath *uri = uri_list->data;
 114                 char *local;
 115
 116                 local = get_local_path(uri);
 117                 if (local)
 118                         argv[argc++] = local;
 119                 else
 120                         argv[argc++] = unescape_uri(uri);
 121                 uri_list = uri_list->next;
 122         }
 123
 124         argv[argc++] = NULL;
 125
 126         type = type_from_path(argv[0]);
 127         if (type && type == application_x_desktop)
 128         {
 129                 run_desktop(argv[0], argv + 1, home_dir);
 130         }
 131         else
 132         {
 133                 rox_spawn(home_dir, argv);
 134         }
 135
 136         for (i = 1; i < argc; i++)
 137                 g_free((gchar *) argv[i]);
 138         g_free(argv);
 139 }
 140
 141 /* Run the program as '<path> -', piping the data to it via stdin.
 142  * You can g_free() the data as soon as this returns.
 143  */
 144 void run_with_data(const char *path, gpointer data, gulong length)
 145 {
 146         const char      *argv[] = {NULL, "-", NULL};
 147         struct stat     info;
 148         int             fds[2];
 149         PipedData       *pd;
 150
 151         if (stat(path, &info))
 152         {
 153                 delayed_error(_("Program %s not found - deleted?"), path);
 154                 return;
 155         }
 156
 157         if (S_ISDIR(info.st_mode))
 158                 argv[0] = make_path(path, "AppRun");
 159         else
 160                 argv[0] = path;
 161
 162         if (pipe(fds))
 163         {
 164                 delayed_error("pipe: %s", g_strerror(errno));
 165                 return;
 166         }
 167         close_on_exec(fds[1], TRUE);
 168         close_on_exec(fds[0], TRUE);
 169
 170         switch (fork())
 171         {
 172                 case -1:
 173                         delayed_error("fork: %s", g_strerror(errno));
 174                         close(fds[1]);
 175                         break;
 176                 case 0:
 177                         /* We are the child */
 178                         chdir(home_dir);
 179                         if (dup2(fds[0], 0) == -1)
 180                                 g_warning("dup2() failed: %s\n",
 181                                                 g_strerror(errno));
 182                         else
 183                         {
 184                                 close_on_exec(0, FALSE);
 185                                 if (execv(argv[0], (char **) argv))
 186                                         g_warning("execv(%s) failed: %s\n",
 187                                                 argv[0], g_strerror(errno));
 188                         }
 189                         _exit(1);
 190                 default:
 191                         /* We are the parent */
 192                         set_blocking(fds[1], FALSE);
 193                         pd = g_new(PipedData, 1);
 194                         pd->data = g_malloc(length);
 195                         memcpy(pd->data, data, length);
 196                         pd->length = length;
 197                         pd->sent = 0;
 198                         pd->tag = gdk_input_add_full(fds[1], GDK_INPUT_WRITE,
 199                                                 write_data, pd, NULL);
 200                         break;
 201         }
 202
 203         close(fds[0]);
 204 }
 205
 206 /* Splits args into an argument vector, and runs the program. Must be
 207  * executable.
 208  */
 209 void run_with_args(const char *path, DirItem *item, const char *args)
 210 {
 211         GError *error = NULL;
 212         gchar **argv = NULL;
 213         int n_args = 0;
 214
 215         if (item->base_type != TYPE_DIRECTORY && item->base_type != TYPE_FILE)
 216         {
 217                 delayed_error("Arguments (%s) given for non-executable item %s",
 218                                 args, path);
 219                 return;
 220         }
 221
 222         if (!g_shell_parse_argv(args, &n_args, &argv, &error))
 223         {
 224                 delayed_error("Failed to parse argument string '%s':\n%s",
 225                                 args, error->message);
 226                 g_error_free(error);
 227                 return;
 228         }
 229
 230         g_return_if_fail(argv != NULL);
 231         g_return_if_fail(error == NULL);
 232
 233         argv = g_realloc(argv, (n_args + 2) * sizeof(gchar *));
 234         memmove(argv + 1, argv, (n_args + 1) * sizeof(gchar *));
 235
 236         if (item->base_type == TYPE_DIRECTORY)
 237                 argv[0] = g_strconcat(path, "/AppRun", NULL);
 238         else
 239                 argv[0] = g_strdup(path);
 240
 241         rox_spawn(home_dir, (const gchar **) argv);
 242
 243         g_strfreev(argv);
 244 }
 245
 246 /* Load a file, open a directory or run an application. Or, if 'edit' is set:
 247  * edit a file, open an application, follow a symlink or mount a device.
 248  *
 249  * filer_window is the window to use for displaying a directory.
 250  * NULL will always use a new directory when needed.
 251  * src_window is the window to copy options from, or NULL.
 252  *
 253  * Returns TRUE on success.
 254  */
 255 gboolean run_diritem(const guchar *full_path,
 256                      DirItem *item,
 257                      FilerWindow *filer_window,
 258                      FilerWindow *src_window,
 259                      gboolean edit)
 260 {
 261         GFile *gfile;
 262         gboolean retval;
 263
 264         gfile = g_file_new_for_path(full_path);
 265         retval = run_diritem_gfile(gfile, item, filer_window, src_window, edit);
 266         g_object_unref(gfile);
 267
 268         return retval;
 269 }
 270
 271 gboolean run_diritem_gfile(GFile *path,
 272                      DirItem *item,
 273                      FilerWindow *filer_window,
 274                      FilerWindow *src_window,
 275                      gboolean edit)
 276 {
 277         if (item->flags & ITEM_FLAG_SYMLINK && edit)
 278                 return follow_symlink(path, filer_window, src_window);
 279
 280         const char *full_path = "TODO";
 281
 282         switch (item->base_type)
 283         {
 284                 case TYPE_DIRECTORY:
 285                         if (item->flags & ITEM_FLAG_APPDIR && !edit)
 286                         {
 287                                 char *pathname;
 288                                 pathname = g_file_get_path(path);
 289                                 if (!pathname)
 290                                 {
 291                                         delayed_error(_("Can't run a remote application!"));
 292                                         return FALSE;
 293                                 }
 294                                 run_app(pathname);
 295                                 g_free(pathname);
 296                                 return TRUE;
 297                         }
 298
 299                         if (item->flags & ITEM_FLAG_MOUNT_POINT)
 300                                 open_mountpoint(path, item, filer_window, src_window, edit);
 301                         else if (filer_window)
 302                                 filer_change_to_gfile(filer_window, path, NULL);
 303                         else
 304                                 filer_opendir_gfile(path, src_window, NULL);
 305                         return TRUE;
 306                 case TYPE_FILE:
 307                         if (EXECUTABLE_FILE(item) && !edit)
 308                         {
 309                                 gboolean retval;
 310                                 const char *argv[] = {NULL, NULL};
 311                                 char *arg;
 312                                 guchar  *dir = filer_window
 313                                                 ? filer_window->sym_path
 314                                                 : NULL;
 315
 316                                 arg = path_or_uri(path);
 317
 318                                 if (item->mime_type == application_x_desktop)
 319                                 {
 320                                         retval = run_desktop(arg, NULL, dir);
 321                                 }
 322                                 else
 323                                 {
 324                                         argv[0] = arg;
 325                                         retval = rox_spawn(dir, argv) != 0;
 326                                 }
 327
 328                                 g_free(arg);
 329
 330                                 return retval;
 331                         }
 332
 333                         return open_file(path, edit ? text_plain : item->mime_type);
 334                 case TYPE_ERROR:
 335                         delayed_error(_("File doesn't exist, or I can't "
 336                                           "access it: %s"), full_path);
 337                         return FALSE;
 338                 default:
 339                         delayed_error(
 340                                 _("I don't know how to open '%s'"), full_path);
 341                         return FALSE;
 342         }
 343 }
 344
 345 /* Attempt to open this item */
 346 gboolean run_by_path(const guchar *full_path)
 347 {
 348         gboolean retval;
 349         DirItem *item;
 350
 351         /* XXX: Loads an image - wasteful */
 352         item = diritem_new("");
 353         diritem_restat(full_path, item, NULL);
 354         retval = run_diritem(full_path, item, NULL, NULL, FALSE);
 355         diritem_free(item);
 356
 357         return retval;
 358 }
 359
 360 /* Attempt to open this item */
 361 gboolean run_by_gfile(GFile *path)
 362 {
 363         gboolean retval;
 364         DirItem *item;
 365
 366         /* XXX: Loads an image - wasteful */
 367         item = diritem_new("");
 368         diritem_restat_gfile(path, item);
 369         retval = run_diritem_gfile(path, item, NULL, NULL, FALSE);
 370         diritem_free(item);
 371
 372         return retval;
 373 }
 374
 375 /* Convert uri to path and call run_by_path() */
 376 gboolean run_by_uri(const gchar *uri, gchar **errmsg)
 377 {
 378         gboolean retval;
 379         gchar *scheme;
 380         gchar *cmd;
 381
 382         scheme=get_uri_scheme((EscapedPath *) uri);
 383         if(!scheme)
 384         {
 385                 *errmsg=g_strdup_printf(_("'%s' is not a valid URI"),
 386                                                 uri);
 387                 return FALSE;
 388         }
 389
 390         if(strcmp(scheme, "file")==0 || strcmp(scheme, "trash")==0) {
 391                 GFile *gfile;
 392                 gfile = g_file_new_for_uri(uri);
 393
 394                 retval = run_by_gfile(gfile);
 395                 g_object_unref(gfile);
 396
 397                 if(!retval)
 398                         *errmsg=g_strdup_printf(_("%s not accessable"), uri);
 399
 400         } else if((cmd=choices_find_xdg_path_load(scheme, "URI", SITE))) {
 401                 DirItem *item;
 402
 403                 item=diritem_new(scheme);
 404                 diritem_restat(cmd, item, NULL);
 405
 406                 run_with_args(cmd, item, uri);
 407                 retval=TRUE; /* we hope... */
 408
 409                 diritem_free(item);
 410                 g_free(cmd);
 411
 412         } else {
 413                 retval=FALSE;
 414                 *errmsg=g_strdup_printf(_("%s: no handler for %s"),
 415                                         uri, scheme);
 416         }
 417
 418         g_free(scheme);
 419
 420         return retval;
 421 }
 422
 423 /* Open dir/Help, or show a message if missing */
 424 void show_help_files(const char *dir)
 425 {
 426         const char      *help_dir;
 427
 428         help_dir = make_path(dir, "Help");
 429
 430         if (file_exists(help_dir))
 431                 filer_opendir(help_dir, NULL, NULL);
 432         else
 433                 info_message(
 434                         _("Application:\n"
 435                         "This is an application directory - you can "
 436                         "run it as a program, or open it (hold down "
 437                         "Shift while you open it). Most applications provide "
 438                         "their own help here, but this one doesn't."));
 439 }
 440
 441 /* Open a directory viewer showing this file, and wink it */
 442 void open_to_show(const guchar *path)
 443 {
 444         FilerWindow     *new;
 445         guchar          *dir, *slash;
 446
 447         g_return_if_fail(path != NULL);
 448
 449         dir = g_strdup(path);
 450         slash = strrchr(dir, '/');
 451         if (slash == dir || !slash)
 452         {
 453                 /* Item in the root (or root itself!) */
 454                 new = filer_opendir("/", NULL, NULL);
 455                 if (new && dir[1])
 456                         display_set_autoselect(new, dir + 1);
 457         }
 458         else
 459         {
 460                 *slash = '\0';
 461                 new = filer_opendir(dir, NULL, NULL);
 462                 if (new)
 463                 {
 464                         if (slash[1] == '.')
 465                                 display_set_hidden(new, TRUE);
 466                         display_set_autoselect(new, slash + 1);
 467                 }
 468         }
 469
 470         g_free(dir);
 471 }
 472
 473 /* Invoked using -x, this indicates that the filesystem has been modified
 474  * and we should look at this item again.
 475  */
 476 void examine(const guchar *path)
 477 {
 478         struct stat info;
 479
 480         if (mc_stat(path, &info) != 0)
 481         {
 482                 /* Deleted? Do a paranoid update of everything... */
 483                 filer_check_mounted(path);
 484         }
 485         else
 486         {
 487                 /* Update directory containing this item... */
 488                 dir_check_this(path);
 489
 490                 /* If this is itself a directory then rescan its contents... */
 491                 if (S_ISDIR(info.st_mode))
 492                         refresh_dirs(path);
 493
 494                 /* If it's on the pinboard or a panel, update the icon... */
 495                 icons_may_update(path);
 496         }
 497 }
 498
 499 /****************************************************************
 500  *                      INTERNAL FUNCTIONS                      *
 501  ****************************************************************/
 502
 503
 504 static void write_data(gpointer data, gint fd, GdkInputCondition cond)
 505 {
 506         PipedData *pd = (PipedData *) data;
 507
 508         while (pd->sent < pd->length)
 509         {
 510                 int     sent;
 511
 512                 sent = write(fd, pd->data + pd->sent, pd->length - pd->sent);
 513
 514                 if (sent < 0)
 515                 {
 516                         if (errno == EAGAIN)
 517                                 return;
 518                         delayed_error(_("Could not send data to program: %s"),
 519                                         g_strerror(errno));
 520                         goto finish;
 521                 }
 522
 523                 pd->sent += sent;
 524         }
 525
 526 finish:
 527         g_source_remove(pd->tag);
 528         g_free(pd->data);
 529         g_free(pd);
 530         close(fd);
 531 }
 532
 533 static char *g_file_readlink(GFile *symlink, GError **error)
 534 {
 535         GFileInfo *info;
 536         char *target;
 537
 538         info = g_file_query_info(symlink, G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL, error);
 539         if (*error)
 540                 return NULL;
 541
 542         target = (char *) g_file_info_get_symlink_target(info);
 543         if (target)
 544                 target = g_strdup(target);
 545
 546         g_object_unref(info);
 547
 548         return target;
 549 }
 550
 551 /* Follow the link 'full_path' and display it in filer_window, or a
 552  * new window if that is NULL.
 553  */
 554 static gboolean follow_symlink(GFile *path,
 555                                FilerWindow *filer_window,
 556                                FilerWindow *src_window)
 557 {
 558         char    *target, *leafname;
 559         GFile   *resolved, *new_dir;
 560         GError  *error = NULL;
 561
 562         target = g_file_readlink(path, &error);
 563
 564         if (error)
 565         {
 566                 delayed_error(_("Could not read link: %s"), error->message);
 567                 g_error_free(error);
 568                 return FALSE;
 569         }
 570
 571         resolved = g_file_resolve_relative_path(path, target);
 572         g_free(target);
 573         target = NULL;
 574
 575         new_dir = g_file_get_parent(resolved);
 576         leafname = g_file_get_basename(resolved);
 577         g_object_unref(resolved);
 578
 579         if (filer_window)
 580                 filer_change_to(filer_window, g_file_get_path(new_dir), leafname);      /* XXX : free */
 581         else
 582         {
 583                 FilerWindow *new;
 584
 585                 new = filer_opendir_gfile(new_dir, src_window, NULL);
 586                 if (new)
 587                         display_set_autoselect(new, leafname);
 588         }
 589
 590         g_object_unref(new_dir);
 591         g_free(leafname);
 592
 593         return TRUE;
 594 }
 595
 596 /* Load this file into an appropriate editor */
 597 static gboolean open_file(GFile *path, MIME_type *type)
 598 {
 599         g_return_val_if_fail(type != NULL, FALSE);
 600
 601         if (type_open(path, type))
 602                 return TRUE;
 603
 604         report_error(
 605                 _("No run action specified for files of this type (%s/%s) - "
 606                 "you can set a run action by choosing `Set Run Action' "
 607                 "from the File menu, or you can just drag the file to an "
 608                 "application.%s"),
 609                 type->media_type,
 610                 type->subtype,
 611                 type->executable ? _("\n\nNote: If this is a computer program which "
 612                                    "you want to run, you need to set the execute bit "
 613                                    "by choosing Permissions from the File menu.")
 614                                 : "");
 615
 616         return FALSE;
 617 }
 618
 619 /* Called like run_diritem, when a mount-point is opened */
 620 static void open_mountpoint(GFile *full_path, DirItem *item,
 621                             FilerWindow *filer_window, FilerWindow *src_window,
 622                             gboolean edit)
 623 {
 624         gboolean mounted = (item->flags & ITEM_FLAG_MOUNTED) != 0;
 625
 626         if (mounted == edit)
 627         {
 628                 GList   *paths;
 629                 char    *path;
 630
 631                 path = g_file_get_path(full_path);
 632                 if (!path)
 633                 {
 634                         delayed_error(_("Can't mount/unmount on remote filesystems yet; sorry!"));
 635                         return;
 636                 }
 637
 638                 paths = g_list_prepend(NULL, (gpointer) path);
 639                 action_mount(paths, filer_window == NULL, !mounted, -1);
 640                 g_list_free(paths);
 641                 if (filer_window && !mounted)
 642                         filer_change_to_gfile(filer_window, full_path, NULL);
 643         }
 644         else
 645         {
 646                 if (filer_window)
 647                         filer_change_to_gfile(filer_window, full_path, NULL);
 648                 else
 649                         filer_opendir_gfile(full_path, src_window, NULL);
 650         }
 651 }
 652
 653 /* full_path is a .desktop file. Execute the application, using the Exec line
 654  * from the file.
 655  * Returns TRUE on success.
 656  */
 657 static gboolean run_desktop(const char *full_path,
 658                             const char **args,
 659                             const char *dir)
 660 {
 661         GError *error = NULL;
 662         char *exec = NULL;
 663         char *terminal = NULL;
 664         char *req_dir = NULL;
 665         gint argc = 0;
 666         gchar **argv = NULL;
 667         GPtrArray *expanded = NULL;
 668         gboolean inserted_args = FALSE;
 669         int i;
 670         gboolean success = FALSE;
 671
 672         get_values_from_desktop_file(full_path,
 673                                         &error,
 674                                         "Desktop Entry", "Exec", &exec,
 675                                         "Desktop Entry", "Terminal", &terminal,
 676                                         "Desktop Entry", "Path", &req_dir,
 677                                         NULL);
 678         if (error)
 679         {
 680                 delayed_error("Failed to parse .desktop file '%s':\n%s",
 681                                 full_path, error->message);
 682                 goto err;
 683         }
 684
 685         if (!exec)
 686         {
 687                 delayed_error("Can't find Exec command in .desktop file '%s'",
 688                                 full_path);
 689                 goto err;
 690         }
 691
 692         if (!g_shell_parse_argv(exec, &argc, &argv, &error))
 693         {
 694                 delayed_error("Failed to parse '%s' from '%s':\n%s",
 695                                 exec, full_path, error->message);
 696                 goto err;
 697         }
 698
 699         expanded = g_ptr_array_new();
 700
 701         if (terminal && g_strcasecmp(terminal, "true") == 0) {
 702                 g_ptr_array_add(expanded, g_strdup("xterm"));
 703                 g_ptr_array_add(expanded, g_strdup("-e"));
 704         }
 705
 706         for (i = 0; i < argc; i++)
 707         {
 708                 const char *src = argv[i];
 709
 710                 if (src[0] == '%' && src[1] != '\0' && src[2] == '\0')
 711                 {
 712                         /* We should treat these four differently. */
 713                         if (src[1] == 'f' || src[1] == 'F' ||
 714                             src[1] == 'u' || src[1] == 'U')
 715                         {
 716                                 int j;
 717                                 for (j = 0; args && args[j]; j++)
 718                                         g_ptr_array_add(expanded, g_strdup(args[j]));
 719                                 inserted_args = TRUE;
 720                         }
 721                         else
 722                         {
 723                                 delayed_error("Unsupported escape character in '%s' in '%s'",
 724                                                 exec, full_path);
 725                                 goto err;
 726                         }
 727                 }
 728                 else
 729                 {
 730                         g_ptr_array_add(expanded, g_strdup(src));
 731                 }
 732         }
 733         if (!inserted_args)
 734         {
 735                 /* Many .desktop files don't include a % expansion. In that case
 736                  * add the arguments here.
 737                  */
 738                 int j;
 739                 for (j = 0; args && args[j]; j++)
 740                         g_ptr_array_add(expanded, g_strdup(args[j]));
 741         }
 742         g_ptr_array_add(expanded, NULL);
 743
 744         if(req_dir)
 745                 dir = req_dir;
 746
 747         success = rox_spawn(dir, (const gchar **) expanded->pdata);
 748 err:
 749         if (error != NULL)
 750                 g_error_free(error);
 751         if (exec != NULL)
 752                 g_free(exec);
 753         if (terminal != NULL)
 754                 g_free(terminal);
 755         if (req_dir != NULL)
 756                 g_free(req_dir);
 757         if (argv != NULL)
 758                 g_strfreev(argv);
 759         if (expanded != NULL)
 760         {
 761                 g_ptr_array_foreach(expanded, (GFunc) g_free, NULL);
 762                 g_ptr_array_free(expanded, TRUE);
 763         }
 764
 765         return success;
 766 }
 767
 768 /* Returns FALSE is no run action is set for this type. */
 769 static gboolean type_open(GFile *path, MIME_type *type)
 770 {
 771         gchar *argv[] = {NULL, NULL, NULL};
 772         char            *open;
 773         struct stat     info;
 774
 775         open = handler_for(type);
 776         if (!open)
 777                 return FALSE;
 778
 779         if (stat(open, &info))
 780         {
 781                 report_error("stat(%s): %s", open, g_strerror(errno));
 782                 g_free(open);
 783                 return TRUE;
 784         }
 785
 786         if (info.st_mode & S_IWOTH)
 787         {
 788                 gchar *choices_dir;
 789                 GList *paths;
 790
 791                 report_error(_("Executable '%s' is world-writeable! Refusing "
 792                         "to run. Please change the permissions now (this "
 793                         "problem may have been caused by a bug in earlier "
 794                         "versions of the filer).\n\n"
 795                         "Having (non-symlink) run actions world-writeable "
 796                         "means that other people who use your computer can "
 797                         "replace your run actions with malicious versions.\n\n"
 798                         "If you trust everyone who could write to these files "
 799                         "then you needn't worry. Otherwise, you should check, "
 800                         "or even just delete, all the existing run actions."),
 801                         open);
 802                 choices_dir = g_path_get_dirname(open);
 803                 paths = g_list_append(NULL, choices_dir);
 804                 action_chmod(paths, TRUE, _("go-w (Fix security problem)"));
 805                 g_free(choices_dir);
 806                 g_list_free(paths);
 807                 g_free(open);
 808                 return TRUE;
 809         }
 810
 811         argv[1] = path_or_uri(path);
 812
 813         if (S_ISDIR(info.st_mode))
 814         {
 815                 argv[0] = g_strconcat(open, "/AppRun", NULL);
 816                 rox_spawn(home_dir, (const gchar **) argv);
 817         }
 818         else if (type_get_type(open) == application_x_desktop)
 819         {
 820                 argv[0] = open;
 821                 run_desktop(open, (const char **) (argv + 1), home_dir);
 822         }
 823         else
 824         {
 825                 argv[0] = open;
 826                 rox_spawn(home_dir, (const gchar **) argv);
 827         }
 828
 829         g_free(argv[1]);
 830
 831         if (argv[0] != open)
 832                 g_free(argv[0]);
 833
 834         g_free(open);
 835
 836         return TRUE;
 837 }
 838