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glib/gio/gwin32mount.c
Philip Withnall e23ea40aaa gwin32: Fix two minor string leaks 
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Fixes: #2891, #2892
2023-01-23 11:50:34 +00:00

544 lines
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C
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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
* Copyright (C) 2008 Hans Breuer
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
* David Zeuthen <davidz@redhat.com>
* Hans Breuer <hans@breuer.org>
*/
#include "config.h"
#include <string.h>
#define WIN32_MEAN_AND_LEAN
#define COBJMACROS
#include <windows.h>
#include <shlobj.h>
#include <shlwapi.h>
/* At the moment of writing IExtractIconW interface in Mingw-w64
* is missing IUnknown members in its vtable. Use our own
* fixed declaration for now.
*/
#undef INTERFACE
#define INTERFACE IMyExtractIconW
DECLARE_INTERFACE_(IMyExtractIconW,IUnknown)
{
/*** IUnknown methods ***/
STDMETHOD_(HRESULT,QueryInterface)(THIS_ REFIID riid, void** ppvObject) PURE;
STDMETHOD_(ULONG,AddRef)(THIS) PURE;
STDMETHOD_(ULONG,Release)(THIS) PURE;
/*** IMyExtractIconW methods ***/
STDMETHOD(GetIconLocation)(THIS_ UINT uFlags, LPWSTR pszIconFile, UINT cchMax, int *piIndex, PUINT pwFlags) PURE;
STDMETHOD(Extract)(THIS_ LPCWSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize) PURE;
};
#undef INTERFACE
#if !defined(__cplusplus) || defined(CINTERFACE)
/*** IUnknown methods ***/
#define IMyExtractIconW_QueryInterface(p,a,b) (p)->lpVtbl->QueryInterface(p,a,b)
#define IMyExtractIconW_AddRef(p) (p)->lpVtbl->AddRef(p)
#define IMyExtractIconW_Release(p) (p)->lpVtbl->Release(p)
/*** IMyExtractIconW methods ***/
#define IMyExtractIconW_GetIconLocation(p,a,b,c,d,e) (p)->lpVtbl->GetIconLocation(p,a,b,c,d,e)
#define IMyExtractIconW_Extract(p,a,b,c,d,e) (p)->lpVtbl->Extract(p,a,b,c,d,e)
#else
/*** IUnknown methods ***/
#define IMyExtractIconW_QueryInterface(p,a,b) (p)->QueryInterface(a,b)
#define IMyExtractIconW_AddRef(p) (p)->AddRef()
#define IMyExtractIconW_Release(p) (p)->Release()
/*** IMyExtractIconW methods ***/
#define IMyExtractIconW_GetIconLocation(p,a,b,c,d,e) (p)->GetIconLocation(p,a,b,c,d,e)
#define IMyExtractIconW_Extract(p,a,b,c,d,e) (p)->Extract(p,a,b,c,d,e)
#endif
#include <glib.h>
#include "gwin32volumemonitor.h"
#include "gwin32mount.h"
#include "gmount.h"
#include "gfile.h"
#include "gmountprivate.h"
#include "gvolumemonitor.h"
#include "gthemedicon.h"
#include "glibintl.h"
struct _GWin32Mount {
GObject parent;
GVolumeMonitor *volume_monitor;
GWin32Volume *volume; /* owned by volume monitor */
int drive_type;
/* why does all this stuff need to be duplicated? It is in volume already! */
char *name;
GIcon *icon;
GIcon *symbolic_icon;
char *mount_path;
gboolean can_eject;
};
static void g_win32_mount_mount_iface_init (GMountIface *iface);
#define g_win32_mount_get_type _g_win32_mount_get_type
G_DEFINE_TYPE_WITH_CODE (GWin32Mount, g_win32_mount, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_MOUNT,
g_win32_mount_mount_iface_init))
static void
g_win32_mount_finalize (GObject *object)
{
GWin32Mount *mount;
mount = G_WIN32_MOUNT (object);
if (mount->volume_monitor != NULL)
g_object_unref (mount->volume_monitor);
#if 0
if (mount->volume)
_g_win32_volume_unset_mount (mount->volume, mount);
#endif
/* TODO: g_warn_if_fail (volume->volume == NULL); */
if (mount->icon != NULL)
g_object_unref (mount->icon);
if (mount->symbolic_icon != NULL)
g_object_unref (mount->symbolic_icon);
g_free (mount->name);
g_free (mount->mount_path);
if (G_OBJECT_CLASS (g_win32_mount_parent_class)->finalize)
(*G_OBJECT_CLASS (g_win32_mount_parent_class)->finalize) (object);
}
static void
g_win32_mount_class_init (GWin32MountClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_win32_mount_finalize;
}
static void
g_win32_mount_init (GWin32Mount *win32_mount)
{
}
/* wdrive doesn't need to end with a path separator.
wdrive must use backslashes as path separators, not slashes.
IShellFolder::ParseDisplayName() takes non-const string as input,
so wdrive can't be a const string.
Returns the name on success (free with g_free),
NULL otherwise.
*/
static gchar *
get_mount_display_name (gunichar2 *wdrive)
{
IShellFolder *desktop;
PIDLIST_RELATIVE volume;
STRRET volume_name;
gchar *result = NULL;
/* Get the desktop folder object reference */
if (!SUCCEEDED (SHGetDesktopFolder (&desktop)))
return result;
if (SUCCEEDED (IShellFolder_ParseDisplayName (desktop, NULL, NULL, wdrive, NULL, &volume, NULL)))
{
volume_name.uType = STRRET_WSTR;
if (SUCCEEDED (IShellFolder_GetDisplayNameOf (desktop, volume, SHGDN_FORADDRESSBAR, &volume_name)))
{
wchar_t *volume_name_wchar;
if (SUCCEEDED (StrRetToStrW (&volume_name, volume, &volume_name_wchar)))
{
result = g_utf16_to_utf8 (volume_name_wchar, -1, NULL, NULL, NULL);
CoTaskMemFree (volume_name_wchar);
}
}
CoTaskMemFree (volume);
}
IShellFolder_Release (desktop);
return result;
}
static gchar *
_win32_get_displayname (const char *drive)
{
gunichar2 *wdrive = g_utf8_to_utf16 (drive, -1, NULL, NULL, NULL);
gchar *name = get_mount_display_name (wdrive);
g_free (wdrive);
return name ? name : g_strdup (drive);
}
/*
* _g_win32_mount_new:
* @volume_monitor: a #GVolumeMonitor.
* @path: a win32 path.
* @volume: usually NULL
*
* Returns: a #GWin32Mount for the given win32 path.
**/
GWin32Mount *
_g_win32_mount_new (GVolumeMonitor *volume_monitor,
const char *path,
GWin32Volume *volume)
{
GWin32Mount *mount;
const gchar *drive = path; //fixme
WCHAR *drive_utf16;
drive_utf16 = g_utf8_to_utf16 (drive, -1, NULL, NULL, NULL);
#if 0
/* No volume for mount: Ignore internal things */
if (volume == NULL && !g_win32_mount_guess_should_display (mount_entry))
return NULL;
#endif
mount = g_object_new (G_TYPE_WIN32_MOUNT, NULL);
mount->volume_monitor = volume_monitor != NULL ? g_object_ref (volume_monitor) : NULL;
mount->mount_path = g_strdup (path);
mount->drive_type = GetDriveTypeW (drive_utf16);
mount->can_eject = FALSE; /* TODO */
mount->name = _win32_get_displayname (drive);
/* need to do this last */
mount->volume = volume;
#if 0
if (volume != NULL)
_g_win32_volume_set_mount (volume, mount);
#endif
g_free (drive_utf16);
return mount;
}
void
_g_win32_mount_unmounted (GWin32Mount *mount)
{
if (mount->volume != NULL)
{
#if 0
_g_win32_volume_unset_mount (mount->volume, mount);
#endif
mount->volume = NULL;
g_signal_emit_by_name (mount, "changed");
/* there's really no need to emit mount_changed on the volume monitor
* as we're going to be deleted.. */
}
}
void
_g_win32_mount_unset_volume (GWin32Mount *mount,
GWin32Volume *volume)
{
if (mount->volume == volume)
{
mount->volume = NULL;
/* TODO: Emit changed in idle to avoid locking issues */
g_signal_emit_by_name (mount, "changed");
if (mount->volume_monitor != NULL)
g_signal_emit_by_name (mount->volume_monitor, "mount-changed", mount);
}
}
static GFile *
g_win32_mount_get_root (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
return g_file_new_for_path (win32_mount->mount_path);
}
static const char *
_win32_drive_type_to_icon (int type, gboolean use_symbolic)
{
switch (type)
{
case DRIVE_REMOVABLE : return use_symbolic ? "drive-removable-media-symbolic" : "drive-removable-media";
case DRIVE_FIXED : return use_symbolic ? "drive-harddisk-symbolic" : "drive-harddisk";
case DRIVE_REMOTE : return use_symbolic ? "folder-remote-symbolic" : "folder-remote";
case DRIVE_CDROM : return use_symbolic ? "drive-optical-symbolic" : "drive-optical";
default : return use_symbolic ? "folder-symbolic" : "folder";
}
}
/* mount_path doesn't need to end with a path separator.
mount_path must use backslashes as path separators, not slashes.
IShellFolder::ParseDisplayName() takes non-const string as input,
so mount_path can't be a const string.
result_name and result_index must not be NULL.
Returns TRUE when result_name is set (free with g_free),
FALSE otherwise.
*/
static gboolean
get_icon_name_index (wchar_t *mount_path,
wchar_t **result_name,
int *result_index)
{
IShellFolder *desktop;
PIDLIST_RELATIVE volume;
IShellFolder *volume_parent;
PCUITEMID_CHILD volume_relative;
IMyExtractIconW *eicon;
int icon_index;
UINT icon_flags;
wchar_t *name_buffer;
gsize name_buffer_size;
gsize arbitrary_reasonable_limit = 5000;
gboolean result = FALSE;
*result_name = NULL;
/* Get the desktop folder object reference */
if (!SUCCEEDED (SHGetDesktopFolder (&desktop)))
return FALSE;
/* Construct the volume IDList relative to desktop */
if (SUCCEEDED (IShellFolder_ParseDisplayName (desktop, NULL, NULL, mount_path, NULL, &volume, NULL)))
{
/* Get the parent of the volume (transfer-full) and the IDList relative to parent (transfer-none) */
if (SUCCEEDED (SHBindToParent (volume, &IID_IShellFolder, (void **) &volume_parent, &volume_relative)))
{
/* Get a reference to IExtractIcon object for the volume */
if (SUCCEEDED (IShellFolder_GetUIObjectOf (volume_parent, NULL, 1, (LPCITEMIDLIST *) &volume_relative, &IID_IExtractIconW, NULL, (void **) &eicon)))
{
gboolean keep_going = TRUE;
name_buffer = NULL;
name_buffer_size = MAX_PATH / 2;
while (keep_going)
{
name_buffer_size *= 2;
name_buffer = g_renew (wchar_t, name_buffer, name_buffer_size);
name_buffer[name_buffer_size - 1] = 0x1; /* sentinel */
keep_going = FALSE;
/* Try to get the icon location */
if (SUCCEEDED (IMyExtractIconW_GetIconLocation (eicon, GIL_FORSHELL, name_buffer, name_buffer_size, &icon_index, &icon_flags)))
{
if (name_buffer[name_buffer_size - 1] != 0x1)
{
if (name_buffer_size < arbitrary_reasonable_limit)
{
/* Buffer was too small, keep going */
keep_going = TRUE;
continue;
}
/* Else stop trying */
}
/* name_buffer might not contain a name */
else if ((icon_flags & GIL_NOTFILENAME) != GIL_NOTFILENAME)
{
*result_name = g_steal_pointer (&name_buffer);
*result_index = icon_index;
result = TRUE;
}
}
}
g_free (name_buffer);
IMyExtractIconW_Release (eicon);
}
IShellFolder_Release (volume_parent);
}
CoTaskMemFree (volume);
}
IShellFolder_Release (desktop);
return result;
}
static GIcon *
g_win32_mount_get_icon (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
g_return_val_if_fail (win32_mount->mount_path != NULL, NULL);
/* lazy creation */
if (!win32_mount->icon)
{
wchar_t *icon_path;
int icon_index;
wchar_t *p;
wchar_t *wfn = g_utf8_to_utf16 (win32_mount->mount_path, -1, NULL, NULL, NULL);
for (p = wfn; p != NULL && *p != 0; p++)
if (*p == L'/')
*p = L'\\';
if (get_icon_name_index (wfn, &icon_path, &icon_index))
{
gchar *id = g_strdup_printf ("%S,%i", icon_path, icon_index);
g_free (icon_path);
win32_mount->icon = g_themed_icon_new (id);
g_free (id);
}
else
{
win32_mount->icon = g_themed_icon_new_with_default_fallbacks (_win32_drive_type_to_icon (win32_mount->drive_type, FALSE));
}
g_free (wfn);
}
return g_object_ref (win32_mount->icon);
}
static GIcon *
g_win32_mount_get_symbolic_icon (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
g_return_val_if_fail (win32_mount->mount_path != NULL, NULL);
/* lazy creation */
if (!win32_mount->symbolic_icon)
{
win32_mount->symbolic_icon = g_themed_icon_new_with_default_fallbacks (_win32_drive_type_to_icon (win32_mount->drive_type, TRUE));
}
return g_object_ref (win32_mount->symbolic_icon);
}
static char *
g_win32_mount_get_uuid (GMount *mount)
{
return NULL;
}
static char *
g_win32_mount_get_name (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
return g_strdup (win32_mount->name);
}
static GDrive *
g_win32_mount_get_drive (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
if (win32_mount->volume != NULL)
return g_volume_get_drive (G_VOLUME (win32_mount->volume));
return NULL;
}
static GVolume *
g_win32_mount_get_volume (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
if (win32_mount->volume)
return G_VOLUME (g_object_ref (win32_mount->volume));
return NULL;
}
static gboolean
g_win32_mount_can_unmount (GMount *mount)
{
return FALSE;
}
static gboolean
g_win32_mount_can_eject (GMount *mount)
{
GWin32Mount *win32_mount = G_WIN32_MOUNT (mount);
return win32_mount->can_eject;
}
typedef struct {
GWin32Mount *win32_mount;
GAsyncReadyCallback callback;
gpointer user_data;
GCancellable *cancellable;
int error_fd;
GIOChannel *error_channel;
guint error_channel_source_id;
GString *error_string;
} UnmountEjectOp;
static void
g_win32_mount_unmount (GMount *mount,
GMountUnmountFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
}
static gboolean
g_win32_mount_unmount_finish (GMount *mount,
GAsyncResult *result,
GError **error)
{
return FALSE;
}
static void
g_win32_mount_eject (GMount *mount,
GMountUnmountFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
}
static gboolean
g_win32_mount_eject_finish (GMount *mount,
GAsyncResult *result,
GError **error)
{
return FALSE;
}
static void
g_win32_mount_mount_iface_init (GMountIface *iface)
{
iface->get_root = g_win32_mount_get_root;
iface->get_name = g_win32_mount_get_name;
iface->get_icon = g_win32_mount_get_icon;
iface->get_symbolic_icon = g_win32_mount_get_symbolic_icon;
iface->get_uuid = g_win32_mount_get_uuid;
iface->get_drive = g_win32_mount_get_drive;
iface->get_volume = g_win32_mount_get_volume;
iface->can_unmount = g_win32_mount_can_unmount;
iface->can_eject = g_win32_mount_can_eject;
iface->unmount = g_win32_mount_unmount;
iface->unmount_finish = g_win32_mount_unmount_finish;
iface->eject = g_win32_mount_eject;
iface->eject_finish = g_win32_mount_eject_finish;
}
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