Electron
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electron
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electron/atom/common/platform_util_win.cc

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13 KiB
C++
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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/common/platform_util.h"
#include <windows.h>
#include <atlbase.h>
#include <commdlg.h>
#include <comdef.h>
#include <dwmapi.h>
#include <shellapi.h>
#include <shlobj.h>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/win/registry.h"
#include "base/win/scoped_co_mem.h"
#include "base/win/scoped_com_initializer.h"
#include "base/win/scoped_comptr.h"
#include "base/win/windows_version.h"
#include "url/gurl.h"
#include "ui/base/win/shell.h"
namespace {
// Old ShellExecute crashes the process when the command for a given scheme
// is empty. This function tells if it is.
bool ValidateShellCommandForScheme(const std::string& scheme) {
base::win::RegKey key;
base::string16 registry_path = base::ASCIIToUTF16(scheme) +
L"\\shell\\open\\command";
key.Open(HKEY_CLASSES_ROOT, registry_path.c_str(), KEY_READ);
if (!key.Valid())
return false;
DWORD size = 0;
key.ReadValue(NULL, NULL, &size, NULL);
if (size <= 2)
return false;
return true;
}
// Required COM implementation of IFileOperationProgressSink so we can
// precheck files before deletion to make sure they can be move to the
// Recycle Bin.
class DeleteFileProgressSink : public IFileOperationProgressSink {
public:
DeleteFileProgressSink();
private:
ULONG STDMETHODCALLTYPE AddRef(void);
ULONG STDMETHODCALLTYPE Release(void);
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, LPVOID* ppvObj);
HRESULT STDMETHODCALLTYPE StartOperations(void);
HRESULT STDMETHODCALLTYPE FinishOperations(HRESULT);
HRESULT STDMETHODCALLTYPE PreRenameItem(
DWORD, IShellItem*, LPCWSTR);
HRESULT STDMETHODCALLTYPE PostRenameItem(
DWORD, IShellItem*, LPCWSTR, HRESULT, IShellItem*);
HRESULT STDMETHODCALLTYPE PreMoveItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR);
HRESULT STDMETHODCALLTYPE PostMoveItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR, HRESULT, IShellItem*);
HRESULT STDMETHODCALLTYPE PreCopyItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR);
HRESULT STDMETHODCALLTYPE PostCopyItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR, HRESULT, IShellItem*);
HRESULT STDMETHODCALLTYPE PreDeleteItem(DWORD, IShellItem*);
HRESULT STDMETHODCALLTYPE PostDeleteItem(
DWORD, IShellItem*, HRESULT, IShellItem*);
HRESULT STDMETHODCALLTYPE PreNewItem(
DWORD, IShellItem*, LPCWSTR);
HRESULT STDMETHODCALLTYPE PostNewItem(
DWORD, IShellItem*, LPCWSTR, LPCWSTR, DWORD, HRESULT, IShellItem*);
HRESULT STDMETHODCALLTYPE UpdateProgress(UINT, UINT);
HRESULT STDMETHODCALLTYPE ResetTimer(void);
HRESULT STDMETHODCALLTYPE PauseTimer(void);
HRESULT STDMETHODCALLTYPE ResumeTimer(void);
ULONG m_cRef;
};
DeleteFileProgressSink::DeleteFileProgressSink() {
m_cRef = 0;
}
HRESULT DeleteFileProgressSink::PreDeleteItem(DWORD dwFlags, IShellItem*) {
if (!(dwFlags & TSF_DELETE_RECYCLE_IF_POSSIBLE)) {
// TSF_DELETE_RECYCLE_IF_POSSIBLE will not be set for items that cannot be
// recycled. In this case, we abort the delete operation. This bubbles
// up and stops the Delete in IFileOperation.
return E_ABORT;
}
// Returns S_OK if successful, or an error value otherwise. In the case of an
// error value, the delete operation and all subsequent operations pending
// from the call to IFileOperation are canceled.
return S_OK;
}
HRESULT DeleteFileProgressSink::QueryInterface(REFIID riid, LPVOID* ppvObj) {
// Always set out parameter to NULL, validating it first.
if (!ppvObj)
return E_INVALIDARG;
*ppvObj = nullptr;
if (riid == IID_IUnknown || riid == IID_IFileOperationProgressSink) {
// Increment the reference count and return the pointer.
*ppvObj = reinterpret_cast<IUnknown*>(this);
AddRef();
return NOERROR;
}
return E_NOINTERFACE;
}
ULONG DeleteFileProgressSink::AddRef() {
InterlockedIncrement(&m_cRef);
return m_cRef;
}
ULONG DeleteFileProgressSink::Release() {
// Decrement the object's internal counter.
ULONG ulRefCount = InterlockedDecrement(&m_cRef);
if (0 == m_cRef) {
delete this;
}
return ulRefCount;
}
HRESULT DeleteFileProgressSink::StartOperations() {
return S_OK;
}
HRESULT DeleteFileProgressSink::FinishOperations(HRESULT) {
return S_OK;
}
HRESULT DeleteFileProgressSink::PreRenameItem(DWORD, IShellItem*, LPCWSTR) {
return S_OK;
}
HRESULT DeleteFileProgressSink::PostRenameItem(
DWORD, IShellItem*, __RPC__in_string LPCWSTR, HRESULT, IShellItem*) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::PreMoveItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::PostMoveItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR, HRESULT, IShellItem*) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::PreCopyItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::PostCopyItem(
DWORD, IShellItem*, IShellItem*, LPCWSTR, HRESULT, IShellItem*) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::PostDeleteItem(
DWORD, IShellItem*, HRESULT, IShellItem*) {
return S_OK;
}
HRESULT DeleteFileProgressSink::PreNewItem(
DWORD dwFlags, IShellItem*, LPCWSTR) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::PostNewItem(
DWORD, IShellItem*, LPCWSTR, LPCWSTR, DWORD, HRESULT, IShellItem*) {
return E_NOTIMPL;
}
HRESULT DeleteFileProgressSink::UpdateProgress(UINT, UINT) {
return S_OK;
}
HRESULT DeleteFileProgressSink::ResetTimer() {
return S_OK;
}
HRESULT DeleteFileProgressSink::PauseTimer() {
return S_OK;
}
HRESULT DeleteFileProgressSink::ResumeTimer() {
return S_OK;
}
} // namespace
namespace platform_util {
void ShowItemInFolder(const base::FilePath& full_path) {
base::win::ScopedCOMInitializer com_initializer;
if (!com_initializer.succeeded())
return;
base::FilePath dir = full_path.DirName().AsEndingWithSeparator();
// ParseDisplayName will fail if the directory is "C:", it must be "C:\\".
if (dir.empty())
return;
typedef HRESULT (WINAPI *SHOpenFolderAndSelectItemsFuncPtr)(
PCIDLIST_ABSOLUTE pidl_Folder,
UINT cidl,
PCUITEMID_CHILD_ARRAY pidls,
DWORD flags);
static SHOpenFolderAndSelectItemsFuncPtr open_folder_and_select_itemsPtr =
NULL;
static bool initialize_open_folder_proc = true;
if (initialize_open_folder_proc) {
initialize_open_folder_proc = false;
// The SHOpenFolderAndSelectItems API is exposed by shell32 version 6
// and does not exist in Win2K. We attempt to retrieve this function export
// from shell32 and if it does not exist, we just invoke ShellExecute to
// open the folder thus losing the functionality to select the item in
// the process.
HMODULE shell32_base = GetModuleHandle(L"shell32.dll");
if (!shell32_base) {
NOTREACHED() << " " << __FUNCTION__ << "(): Can't open shell32.dll";
return;
}
open_folder_and_select_itemsPtr =
reinterpret_cast<SHOpenFolderAndSelectItemsFuncPtr>
(GetProcAddress(shell32_base, "SHOpenFolderAndSelectItems"));
}
if (!open_folder_and_select_itemsPtr) {
ui::win::OpenFolderViaShell(dir);
return;
}
base::win::ScopedComPtr<IShellFolder> desktop;
HRESULT hr = SHGetDesktopFolder(desktop.Receive());
if (FAILED(hr))
return;
base::win::ScopedCoMem<ITEMIDLIST> dir_item;
hr = desktop->ParseDisplayName(NULL, NULL,
const_cast<wchar_t *>(dir.value().c_str()),
NULL, &dir_item, NULL);
if (FAILED(hr)) {
ui::win::OpenFolderViaShell(dir);
return;
}
base::win::ScopedCoMem<ITEMIDLIST> file_item;
hr = desktop->ParseDisplayName(NULL, NULL,
const_cast<wchar_t *>(full_path.value().c_str()),
NULL, &file_item, NULL);
if (FAILED(hr)) {
ui::win::OpenFolderViaShell(dir);
return;
}
const ITEMIDLIST* highlight[] = { file_item };
hr = (*open_folder_and_select_itemsPtr)(dir_item, arraysize(highlight),
highlight, NULL);
if (FAILED(hr)) {
// On some systems, the above call mysteriously fails with "file not
// found" even though the file is there. In these cases, ShellExecute()
// seems to work as a fallback (although it won't select the file).
if (hr == ERROR_FILE_NOT_FOUND) {
ui::win::OpenFolderViaShell(dir);
} else {
LPTSTR message = NULL;
DWORD message_length = FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
0, hr, 0, reinterpret_cast<LPTSTR>(&message), 0, NULL);
LOG(WARNING) << " " << __FUNCTION__
<< "(): Can't open full_path = \""
<< full_path.value() << "\""
<< " hr = " << hr
<< " " << reinterpret_cast<LPTSTR>(&message);
if (message)
LocalFree(message);
ui::win::OpenFolderViaShell(dir);
}
}
}
void OpenItem(const base::FilePath& full_path) {
if (base::DirectoryExists(full_path))
ui::win::OpenFolderViaShell(full_path);
else
ui::win::OpenFileViaShell(full_path);
}
bool OpenExternal(const GURL& url, bool activate) {
// Quote the input scheme to be sure that the command does not have
// parameters unexpected by the external program. This url should already
// have been escaped.
std::string escaped_url = url.spec();
escaped_url.insert(0, "\"");
escaped_url += "\"";
// According to Mozilla in uriloader/exthandler/win/nsOSHelperAppService.cpp:
// "Some versions of windows (Win2k before SP3, Win XP before SP1) crash in
// ShellExecute on long URLs (bug 161357 on bugzilla.mozilla.org). IE 5 and 6
// support URLS of 2083 chars in length, 2K is safe."
const size_t kMaxURLLength = 2048;
if (escaped_url.length() > kMaxURLLength) {
NOTREACHED();
return false;
}
if (base::win::GetVersion() < base::win::VERSION_WIN7) {
if (!ValidateShellCommandForScheme(url.scheme()))
return false;
}
if (reinterpret_cast<ULONG_PTR>(ShellExecuteA(NULL, "open",
escaped_url.c_str(), NULL, NULL,
SW_SHOWNORMAL)) <= 32) {
// We fail to execute the call. We could display a message to the user.
// TODO(nsylvain): we should also add a dialog to warn on errors. See
// bug 1136923.
return false;
}
return true;
}
bool MoveItemToTrash(const base::FilePath& path) {
base::win::ScopedCOMInitializer com_initializer;
if (!com_initializer.succeeded())
return false;
base::win::ScopedComPtr<IFileOperation> pfo;
if (FAILED(pfo.CreateInstance(CLSID_FileOperation)))
return false;
// Elevation prompt enabled for UAC protected files. This overrides the
// SILENT, NO_UI and NOERRORUI flags.
if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
// Windows 8 introduces the flag RECYCLEONDELETE and deprecates the
// ALLOWUNDO in favor of ADDUNDORECORD.
if (FAILED(pfo->SetOperationFlags(FOF_NO_UI |
FOFX_ADDUNDORECORD |
FOF_NOERRORUI |
FOF_SILENT |
FOFX_SHOWELEVATIONPROMPT |
FOFX_RECYCLEONDELETE)))
return false;
} else {
// For Windows 7 and Vista, RecycleOnDelete is the default behavior.
if (FAILED(pfo->SetOperationFlags(FOF_NO_UI |
FOF_ALLOWUNDO |
FOF_NOERRORUI |
FOF_SILENT |
FOFX_SHOWELEVATIONPROMPT)))
return false;
}
// Create an IShellItem from the supplied source path.
base::win::ScopedComPtr<IShellItem> delete_item;
if (FAILED(SHCreateItemFromParsingName(path.value().c_str(),
NULL,
IID_PPV_ARGS(delete_item.Receive()))))
return false;
base::win::ScopedComPtr<IFileOperationProgressSink> delete_sink(
new DeleteFileProgressSink);
if (!delete_sink)
return false;
// Processes the queued command DeleteItem. This will trigger
// the DeleteFileProgressSink to check for Recycle Bin.
return SUCCEEDED(pfo->DeleteItem(delete_item.get(), delete_sink.get())) &&
SUCCEEDED(pfo->PerformOperations());
}
void Beep() {
MessageBeep(MB_OK);
}
} // namespace platform_util
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