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100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/* guestfish - guest filesystem shell
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* Copyright (C) 2011-2018 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* The file implements the guestfish C<display> command, for
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* displaying graphical files (icons, images) in disk images.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <libintl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "fish.h"
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int
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run_display (const char *cmd, size_t argc, char *argv[])
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{
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CLEANUP_FREE char *tmpdir = guestfs_get_tmpdir (g), *filename = NULL;
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CLEANUP_FREE char *remote = NULL;
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const char *display;
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char buf[256];
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int r, fd;
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if (argc != 1) {
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fprintf (stderr, _("display filename\n"));
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return -1;
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}
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/* Choose a display command. */
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display = getenv ("GUESTFISH_DISPLAY_IMAGE");
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if (display == NULL)
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display = "display";
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/* Allow win:... prefix on remote. */
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remote = win_prefix (argv[0]);
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if (remote == NULL)
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return -1;
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/* Download the file and write it to a temporary. */
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if (asprintf (&filename, "%s/guestfishXXXXXX", tmpdir) == -1) {
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perror ("asprintf");
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return -1;
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}
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fd = mkstemp (filename);
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if (fd == -1) {
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perror ("mkstemp");
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return -1;
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}
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snprintf (buf, sizeof buf, "/dev/fd/%d", fd);
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if (guestfs_download (g, remote, buf) == -1) {
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close (fd);
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unlink (filename);
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return -1;
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}
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if (close (fd) == -1) {
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perror (filename);
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unlink (filename);
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return -1;
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}
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/* View it. */
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snprintf (buf, sizeof buf, "%s %s", display, filename);
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r = system (buf);
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unlink (filename);
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if (r != 0) {
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perror (buf);
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return -1;
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}
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return 0;
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}
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