Support the trash portal

When we are in a sandbox, try to trash files via a portal.
It works.

1 files changed, 123 insertions, 0 deletions

diff --git a/gio/gtrashportal.c b/gio/gtrashportal.c
new file mode 100644
index 000000000..a1e82102b
--- /dev/null
+++ b/gio/gtrashportal.c
@@ -0,0 +1,123 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright 2018, Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General
+ * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+
+#include "gtrashportal.h"
+#include "xdp-dbus.h"
+#include "gstdio.h"
+
+#ifdef G_OS_UNIX
+#include "gunixfdlist.h"
+#endif
+
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#else
+#define HAVE_O_CLOEXEC 1
+#endif
+
+static GXdpTrash *
+ensure_trash_portal (void)
+{
+  static GXdpTrash *trash = NULL;
+
+  if (g_once_init_enter (&trash))
+    {
+      GDBusConnection *connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
+      GXdpTrash *proxy = NULL;
+
+      if (connection != NULL)
+        {
+          proxy = gxdp_trash_proxy_new_sync (connection, 0,
+                                             "org.freedesktop.portal.Desktop",
+                                             "/org/freedesktop/portal/desktop",
+                                             NULL, NULL);
+          g_object_unref (connection);
+        }
+
+      g_once_init_leave (&trash, proxy);
+    }
+
+  return trash;
+}
+
+gboolean
+g_trash_portal_trash_file (GFile   *file,
+                           GError **error)
+{
+  char *path = NULL;
+  GUnixFDList *fd_list = NULL;
+  int fd, fd_in, errsv;
+  gboolean ret = FALSE;
+  GXdpTrash *proxy;
+  
+  proxy = ensure_trash_portal ();
+  if (proxy == NULL)
+    {
+      g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_INITIALIZED,
+                   "Trash portal is not available");
+      goto out;
+    }
+
+  path = g_file_get_path (file);
+
+  fd = g_open (path, O_RDWR | O_CLOEXEC);
+  if (fd == -1 && (errno == EACCES || errno == EISDIR))
+    /* If we don't have write access, fall back to read-only */
+    fd = g_open (path, O_CLOEXEC | O_RDONLY);
+
+  errsv = errno;
+
+  if (fd == -1)
+    {
+      g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv),
+                   "Failed to open %s", path);
+      goto out;
+    }
+
+#ifndef HAVE_O_CLOEXEC
+  fcntl (fd, F_SETFD, FD_CLOEXEC);
+#endif
+
+  fd_list = g_unix_fd_list_new ();
+  fd_in = g_unix_fd_list_append (fd_list, fd, error);
+  g_close (fd, NULL);
+
+  if (fd_in == -1)
+    goto out;
+
+  ret = gxdp_trash_call_trash_file_sync (proxy,
+                                         g_variant_new_handle (fd_in),
+                                         fd_list,
+                                         NULL,
+                                         NULL,
+                                         NULL,
+                                         error);
+
+ out:
+  g_clear_object (&fd_list);
+  g_free (path);
+
+  return ret;
+}