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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/storage_monitor/storage_monitor_win.h"
#include <windows.h>
#include <dbt.h>
#include <fileapi.h>
#include <shlobj.h>
#include <stddef.h>
#include "base/win/wrapped_window_proc.h"
#include "components/storage_monitor/portable_device_watcher_win.h"
#include "components/storage_monitor/removable_device_constants.h"
#include "components/storage_monitor/storage_info.h"
#include "components/storage_monitor/volume_mount_watcher_win.h"
#define WM_USER_MEDIACHANGED (WM_USER + 5)
// StorageMonitorWin -------------------------------------------------------
namespace storage_monitor {
StorageMonitorWin::StorageMonitorWin(
VolumeMountWatcherWin* volume_mount_watcher,
PortableDeviceWatcherWin* portable_device_watcher)
: window_class_(0),
instance_(NULL),
window_(NULL),
shell_change_notify_id_(0),
volume_mount_watcher_(volume_mount_watcher),
portable_device_watcher_(portable_device_watcher) {
DCHECK(volume_mount_watcher_);
DCHECK(portable_device_watcher_);
volume_mount_watcher_->SetNotifications(receiver());
portable_device_watcher_->SetNotifications(receiver());
}
StorageMonitorWin::~StorageMonitorWin() {
if (shell_change_notify_id_)
SHChangeNotifyDeregister(shell_change_notify_id_);
volume_mount_watcher_->SetNotifications(NULL);
portable_device_watcher_->SetNotifications(NULL);
if (window_)
DestroyWindow(window_);
if (window_class_)
UnregisterClass(MAKEINTATOM(window_class_), instance_);
}
void StorageMonitorWin::Init() {
WNDCLASSEX window_class;
base::win::InitializeWindowClass(
L"Chrome_StorageMonitorWindow",
&base::win::WrappedWindowProc<StorageMonitorWin::WndProcThunk>,
0, 0, 0, NULL, NULL, NULL, NULL, NULL,
&window_class);
instance_ = window_class.hInstance;
window_class_ = RegisterClassEx(&window_class);
DCHECK(window_class_);
window_ = CreateWindow(MAKEINTATOM(window_class_), 0, 0, 0, 0, 0, 0, 0, 0,
instance_, 0);
SetWindowLongPtr(window_, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(this));
volume_mount_watcher_->Init();
portable_device_watcher_->Init(window_);
MediaChangeNotificationRegister();
}
bool StorageMonitorWin::GetStorageInfoForPath(const base::FilePath& path,
StorageInfo* device_info) const {
DCHECK(device_info);
// TODO(gbillock): Move this logic up to StorageMonitor.
// If we already know the StorageInfo for the path, just return it.
// This will account for portable devices as well.
std::vector<StorageInfo> attached_devices = GetAllAvailableStorages();
size_t best_parent = attached_devices.size();
size_t best_length = 0;
for (size_t i = 0; i < attached_devices.size(); i++) {
if (!StorageInfo::IsRemovableDevice(attached_devices[i].device_id()))
continue;
base::FilePath relative;
if (base::FilePath(attached_devices[i].location()).AppendRelativePath(
path, &relative)) {
// Note: the relative path is longer for shorter shared path between
// the path and the device mount point, so we want the shortest
// relative path.
if (relative.value().size() < best_length) {
best_parent = i;
best_length = relative.value().size();
}
}
}
if (best_parent != attached_devices.size()) {
*device_info = attached_devices[best_parent];
return true;
}
return GetDeviceInfo(path, device_info);
}
void StorageMonitorWin::EjectDevice(
const std::string& device_id,
base::Callback<void(EjectStatus)> callback) {
StorageInfo::Type type;
if (!StorageInfo::CrackDeviceId(device_id, &type, NULL)) {
callback.Run(EJECT_FAILURE);
return;
}
if (type == StorageInfo::MTP_OR_PTP)
portable_device_watcher_->EjectDevice(device_id, callback);
else if (StorageInfo::IsRemovableDevice(device_id))
volume_mount_watcher_->EjectDevice(device_id, callback);
else
callback.Run(EJECT_FAILURE);
}
bool StorageMonitorWin::GetMTPStorageInfoFromDeviceId(
const std::string& storage_device_id,
base::string16* device_location,
base::string16* storage_object_id) const {
StorageInfo::Type type;
StorageInfo::CrackDeviceId(storage_device_id, &type, NULL);
return ((type == StorageInfo::MTP_OR_PTP) &&
portable_device_watcher_->GetMTPStorageInfoFromDeviceId(
storage_device_id, device_location, storage_object_id));
}
// static
LRESULT CALLBACK StorageMonitorWin::WndProcThunk(HWND hwnd, UINT message,
WPARAM wparam, LPARAM lparam) {
StorageMonitorWin* msg_wnd = reinterpret_cast<StorageMonitorWin*>(
GetWindowLongPtr(hwnd, GWLP_USERDATA));
if (msg_wnd)
return msg_wnd->WndProc(hwnd, message, wparam, lparam);
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
LRESULT CALLBACK StorageMonitorWin::WndProc(HWND hwnd, UINT message,
WPARAM wparam, LPARAM lparam) {
switch (message) {
case WM_DEVICECHANGE:
OnDeviceChange(static_cast<UINT>(wparam), lparam);
return TRUE;
case WM_USER_MEDIACHANGED:
OnMediaChange(wparam, lparam);
return TRUE;
default:
break;
}
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
void StorageMonitorWin::MediaChangeNotificationRegister() {
LPITEMIDLIST id_list;
if (SHGetSpecialFolderLocation(NULL, CSIDL_DRIVES, &id_list) == NOERROR) {
SHChangeNotifyEntry notify_entry;
notify_entry.pidl = id_list;
notify_entry.fRecursive = TRUE;
shell_change_notify_id_ = SHChangeNotifyRegister(
window_, SHCNRF_ShellLevel, SHCNE_MEDIAINSERTED | SHCNE_MEDIAREMOVED,
WM_USER_MEDIACHANGED, 1, ¬ify_entry);
if (!shell_change_notify_id_)
DVLOG(1) << "SHChangeNotifyRegister FAILED";
} else {
DVLOG(1) << "SHGetSpecialFolderLocation FAILED";
}
}
bool StorageMonitorWin::GetDeviceInfo(const base::FilePath& device_path,
StorageInfo* info) const {
DCHECK(info);
// TODO(kmadhusu) Implement PortableDeviceWatcherWin::GetDeviceInfo()
// function when we have the functionality to add a sub directory of
// portable device as a media gallery.
return volume_mount_watcher_->GetDeviceInfo(device_path, info);
}
void StorageMonitorWin::OnDeviceChange(UINT event_type, LPARAM data) {
DVLOG(1) << "OnDeviceChange " << event_type << " " << data;
volume_mount_watcher_->OnWindowMessage(event_type, data);
portable_device_watcher_->OnWindowMessage(event_type, data);
}
void StorageMonitorWin::OnMediaChange(WPARAM wparam, LPARAM lparam) {
volume_mount_watcher_->OnMediaChange(wparam, lparam);
}
StorageMonitor* StorageMonitor::CreateInternal() {
return new StorageMonitorWin(new VolumeMountWatcherWin(),
new PortableDeviceWatcherWin());
}
} // namespace storage_monitor
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