/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
* Copyright (C) 2008 Hans Breuer
*
* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
* David Zeuthen <davidz@redhat.com>
* Hans Breuer <hans@breuer.org>
*/
#include "config.h"
#include <string.h>
#include <glib.h>
#include "glibintl.h"
#include "gwin32volumemonitor.h"
#include "gwin32mount.h"
#include "gmount.h"
#include "giomodule.h"
#include "gioalias.h"
#define _WIN32_WINNT 0x0500
#include <windows.h>
struct _GWin32VolumeMonitor {
GNativeVolumeMonitor parent;
GList *volumes;
GList *mounts;
};
#define g_win32_volume_monitor_get_type _g_win32_volume_monitor_get_type
G_DEFINE_TYPE_WITH_CODE (GWin32VolumeMonitor, g_win32_volume_monitor, G_TYPE_NATIVE_VOLUME_MONITOR,
g_io_extension_point_implement (G_NATIVE_VOLUME_MONITOR_EXTENSION_POINT_NAME,
g_define_type_id,
"win32",
0));
static void
g_win32_volume_monitor_finalize (GObject *object)
{
GWin32VolumeMonitor *monitor;
monitor = G_WIN32_VOLUME_MONITOR (object);
if (G_OBJECT_CLASS (g_win32_volume_monitor_parent_class)->finalize)
(*G_OBJECT_CLASS (g_win32_volume_monitor_parent_class)->finalize) (object);
}
/**
* get_viewable_logical_drives:
*
* Returns the list of logical and viewable drives as defined by
* GetLogicalDrives() and the registry keys
* Software\Microsoft\Windows\CurrentVersion\Policies\Explorer under
* HKLM or HKCU. If neither key exists the result of
* GetLogicalDrives() is returned.
*
* Return value: bitmask with same meaning as returned by GetLogicalDrives()
**/
static guint32
get_viewable_logical_drives (void)
{
guint viewable_drives = GetLogicalDrives ();
HKEY key;
DWORD var_type = REG_DWORD; //the value's a REG_DWORD type
DWORD no_drives_size = 4;
DWORD no_drives;
gboolean hklm_present = FALSE;
if (RegOpenKeyEx (HKEY_LOCAL_MACHINE,
"Software\\Microsoft\\Windows\\"
"CurrentVersion\\Policies\\Explorer",
0, KEY_READ, &key) == ERROR_SUCCESS)
{
if (RegQueryValueEx (key, "NoDrives", NULL, &var_type,
(LPBYTE) &no_drives, &no_drives_size) == ERROR_SUCCESS)
{
/* We need the bits that are set in viewable_drives, and
* unset in no_drives.
*/
viewable_drives = viewable_drives & ~no_drives;
hklm_present = TRUE;
}
RegCloseKey (key);
}
/* If the key is present in HKLM then the one in HKCU should be ignored */
if (!hklm_present)
{
if (RegOpenKeyEx (HKEY_CURRENT_USER,
"Software\\Microsoft\\Windows\\"
"CurrentVersion\\Policies\\Explorer",
0, KEY_READ, &key) == ERROR_SUCCESS)
{
if (RegQueryValueEx (key, "NoDrives", NULL, &var_type,
(LPBYTE) &no_drives, &no_drives_size) == ERROR_SUCCESS)
{
viewable_drives = viewable_drives & ~no_drives;
}
RegCloseKey (key);
}
}
return viewable_drives;
}
/* deliver accesible (aka 'mounted') volumes */
static GList *
get_mounts (GVolumeMonitor *volume_monitor)
{
GWin32VolumeMonitor *monitor;
DWORD drives;
gchar drive[4] = "A:\\";
GList *list = NULL;
monitor = G_WIN32_VOLUME_MONITOR (volume_monitor);
drives = get_viewable_logical_drives ();
if (!drives)
g_warning ("get_viewable_logical_drives failed.");
while (drives && drive[0] <= 'Z')
{
if (drives & 1)
{
list = g_list_prepend (list, _g_win32_mount_new (volume_monitor, drive, NULL));
}
drives >>= 1;
drive[0]++;
}
return list;
}
/* actually 'mounting' volumes is out of GIOs business on win32, so no volumes are delivered either */
static GList *
get_volumes (GVolumeMonitor *volume_monitor)
{
GWin32VolumeMonitor *monitor;
GList *l = NULL;
monitor = G_WIN32_VOLUME_MONITOR (volume_monitor);
return l;
}
/* real hardware */
static GList *
get_connected_drives (GVolumeMonitor *volume_monitor)
{
GWin32VolumeMonitor *monitor;
HANDLE find_handle;
BOOL found;
wchar_t wc_name[MAX_PATH+1];
GList *list = NULL;
monitor = G_WIN32_VOLUME_MONITOR (volume_monitor);
#if 0
find_handle = FindFirstVolumeW (wc_name, MAX_PATH);
found = (find_handle != INVALID_HANDLE_VALUE);
while (found)
{
/* I don't know what this code is supposed to do; clearly it now
* does nothing, the returned GList is always NULL. But what was
* this code supposed to be a start of? The volume names that
* the FindFirstVolume/FindNextVolume loop iterates over returns
* device names like
*
* \Device\HarddiskVolume1
* \Device\HarddiskVolume2
* \Device\CdRom0
*
* No DOS devices there, so I don't see the point with the
* QueryDosDevice call below. Probably this code is confusing volumes
* with something else that does contain the mapping from DOS devices
* to volumes.
*/
wchar_t wc_dev_name[MAX_PATH+1];
guint trailing = wcslen (wc_name) - 1;
/* remove trailing backslash and leading \\?\\ */
wc_name[trailing] = L'\0';
if (QueryDosDeviceW (&wc_name[4], wc_dev_name, MAX_PATH))
{
gchar *name = g_utf16_to_utf8 (wc_dev_name, -1, NULL, NULL, NULL);
g_print ("%s\n", name);
g_free (name);
}
found = FindNextVolumeW (find_handle, wc_name, MAX_PATH);
}
if (find_handle != INVALID_HANDLE_VALUE)
FindVolumeClose (find_handle);
#endif
return list;
}
static GVolume *
get_volume_for_uuid (GVolumeMonitor *volume_monitor, const char *uuid)
{
return NULL;
}
static GMount *
get_mount_for_uuid (GVolumeMonitor *volume_monitor, const char *uuid)
{
return NULL;
}
static gboolean
is_supported (void)
{
return TRUE;
}
static GMount *
get_mount_for_mount_path (const char *mount_path,
GCancellable *cancellable)
{
GWin32Mount *mount;
/* TODO: Set mountable volume? */
mount = _g_win32_mount_new (NULL, mount_path, NULL);
return G_MOUNT (mount);
}
static void
g_win32_volume_monitor_class_init (GWin32VolumeMonitorClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GVolumeMonitorClass *monitor_class = G_VOLUME_MONITOR_CLASS (klass);
GNativeVolumeMonitorClass *native_class = G_NATIVE_VOLUME_MONITOR_CLASS (klass);
gobject_class->finalize = g_win32_volume_monitor_finalize;
monitor_class->get_mounts = get_mounts;
monitor_class->get_volumes = get_volumes;
monitor_class->get_connected_drives = get_connected_drives;
monitor_class->get_volume_for_uuid = get_volume_for_uuid;
monitor_class->get_mount_for_uuid = get_mount_for_uuid;
monitor_class->is_supported = is_supported;
native_class->get_mount_for_mount_path = get_mount_for_mount_path;
}
static void
g_win32_volume_monitor_init (GWin32VolumeMonitor *win32_monitor)
{
/* maybe we shoud setup a callback window to listern for WM_DEVICECHANGE ? */
#if 0
unix_monitor->mount_monitor = g_win32_mount_monitor_new ();
g_signal_connect (win32_monitor->mount_monitor,
"mounts-changed", G_CALLBACK (mounts_changed),
win32_monitor);
g_signal_connect (win32_monitor->mount_monitor,
"mountpoints-changed", G_CALLBACK (mountpoints_changed),
win32_monitor);
update_volumes (win32_monitor);
update_mounts (win32_monitor);
#endif
}