reactos/dll/win32/browseui/desktopipc.cpp

712 lines
19 KiB
C++

#include "precomp.h"
#include <shlwapi.h>
#include <shlwapi_undoc.h>
#define PROXY_DESKTOP_CLASS L"Proxy Desktop"
BOOL g_SeparateFolders = FALSE;
HWND g_hwndProxyDesktop = NULL;
// fields indented more are unknown ;P
struct HNFBlock
{
UINT cbSize;
DWORD offset4;
DWORD offset8;
DWORD offsetC;
DWORD offset10;
DWORD offset14;
DWORD offset18;
DWORD offset1C;
DWORD offset20;
DWORD offset24;
DWORD offset28;
DWORD offset2C;
DWORD offset30;
UINT directoryPidlLength;
UINT pidlSize7C;
UINT pidlSize80;
UINT pathLength;
};
class CProxyDesktop :
public CComObjectRootEx<CComMultiThreadModelNoCS>,
public CWindowImpl < CProxyDesktop, CWindow, CFrameWinTraits >
{
public:
CProxyDesktop(IEThreadParamBlock * parameters)
{
}
virtual ~CProxyDesktop()
{
}
LRESULT OnMessage1037(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRACE("Proxy Desktop message 1037.\n");
bHandled = TRUE;
return TRUE;
}
LRESULT OnOpenNewWindow(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
TRACE("Proxy Desktop message 1035 received.\n");
bHandled = TRUE;
SHOnCWMCommandLine((HANDLE) lParam);
return 0;
}
DECLARE_WND_CLASS_EX(PROXY_DESKTOP_CLASS, CS_SAVEBITS | CS_DROPSHADOW, COLOR_3DFACE)
BEGIN_MSG_MAP(CProxyDesktop)
MESSAGE_HANDLER(WM_EXPLORER_1037, OnMessage1037)
MESSAGE_HANDLER(WM_EXPLORER_OPEN_NEW_WINDOW, OnOpenNewWindow)
END_MSG_MAP()
};
HWND FindShellProxy(LPITEMIDLIST pidl)
{
/* If there is a proxy desktop in the current process use it */
if (g_hwndProxyDesktop)
return g_hwndProxyDesktop;
/* Try to find the desktop of the main explorer process */
if (!g_SeparateFolders)
{
HWND shell = GetShellWindow();
if (shell)
{
TRACE("Found main desktop.\n");
return shell;
}
}
else
{
TRACE("Separate folders setting enabled. Ignoring main desktop.\n");
}
/* The main desktop can't be find so try to see if another process has a proxy desktop */
HWND proxy = FindWindow(PROXY_DESKTOP_CLASS, NULL);
if (proxy)
{
TRACE("Found proxy desktop.\n");
return proxy;
}
return NULL;
}
HANDLE MakeSharedPacket(IEThreadParamBlock * threadParams, LPCWSTR strPath, int dwProcessId)
{
HNFBlock* hnfData;
UINT sharedBlockSize = sizeof(*hnfData);
UINT directoryPidlLength = 0;
UINT pidlSize7C = 0;
UINT pidlSize80 = 0;
UINT pathLength = 0;
LPITEMIDLIST pidl80 = threadParams->offset80;
// Count the total length of the message packet
// directory PIDL
if (threadParams->directoryPIDL)
{
directoryPidlLength = ILGetSize(threadParams->directoryPIDL);
sharedBlockSize += directoryPidlLength;
TRACE("directoryPidlLength=%d\n", directoryPidlLength);
}
// another PIDL
if (threadParams->offset7C)
{
pidlSize7C = ILGetSize(threadParams->offset7C);
sharedBlockSize += pidlSize7C;
TRACE("pidlSize7C=%d\n", pidlSize7C);
}
// This flag indicates the presence of another pidl?
if (!(threadParams->offset84 & 0x8000))
{
if (pidl80)
{
pidlSize80 = ILGetSize(pidl80);
sharedBlockSize += pidlSize80;
TRACE("pidlSize80=%d\n", pidlSize7C);
}
}
else
{
TRACE("pidl80 sent by value = %p\n", pidl80);
pidlSize80 = 4;
sharedBlockSize += pidlSize80;
}
// The path string
if (strPath)
{
pathLength = 2 * lstrlenW(strPath) + 2;
sharedBlockSize += pathLength;
TRACE("pathLength=%d\n", pidlSize7C);
}
TRACE("sharedBlockSize=%d\n", sharedBlockSize);
// Allocate and fill the shared section
HANDLE hShared = SHAllocShared(0, sharedBlockSize, dwProcessId);
if (!hShared)
{
ERR("Shared section alloc error.\n");
return 0;
}
PBYTE target = (PBYTE) SHLockShared(hShared, dwProcessId);
if (!target)
{
ERR("Shared section lock error. %d\n", GetLastError());
SHFreeShared(hShared, dwProcessId);
return 0;
}
// Basic information
hnfData = (HNFBlock*) target;
hnfData->cbSize = sharedBlockSize;
hnfData->offset4 = (DWORD) (threadParams->dwFlags);
hnfData->offset8 = (DWORD) (threadParams->offset8);
hnfData->offsetC = (DWORD) (threadParams->offset74);
hnfData->offset10 = (DWORD) (threadParams->offsetD8);
hnfData->offset14 = (DWORD) (threadParams->offset84);
hnfData->offset18 = (DWORD) (threadParams->offset88);
hnfData->offset1C = (DWORD) (threadParams->offset8C);
hnfData->offset20 = (DWORD) (threadParams->offset90);
hnfData->offset24 = (DWORD) (threadParams->offset94);
hnfData->offset28 = (DWORD) (threadParams->offset98);
hnfData->offset2C = (DWORD) (threadParams->offset9C);
hnfData->offset30 = (DWORD) (threadParams->offsetA0);
hnfData->directoryPidlLength = 0;
hnfData->pidlSize7C = 0;
hnfData->pidlSize80 = 0;
hnfData->pathLength = 0;
target += sizeof(*hnfData);
// Copy the directory pidl contents
if (threadParams->directoryPIDL)
{
memcpy(target, threadParams->directoryPIDL, directoryPidlLength);
target += directoryPidlLength;
hnfData->directoryPidlLength = directoryPidlLength;
}
// Copy the other pidl contents
if (threadParams->offset7C)
{
memcpy(target, threadParams->offset7C, pidlSize7C);
target += pidlSize7C;
hnfData->pidlSize7C = pidlSize7C;
}
// copy the third pidl
if (threadParams->offset84 & 0x8000)
{
*(LPITEMIDLIST*) target = pidl80;
target += pidlSize80;
hnfData->pidlSize80 = pidlSize80;
}
else if (pidl80)
{
memcpy(target, pidl80, pidlSize80);
target += pidlSize80;
hnfData->pidlSize80 = pidlSize80;
}
// and finally the path string
if (strPath)
{
memcpy(target, strPath, pathLength);
hnfData->pathLength = pathLength;
}
SHUnlockShared(hnfData);
return hShared;
}
PIE_THREAD_PARAM_BLOCK ParseSharedPacket(HANDLE hData)
{
HNFBlock * hnfData;
PBYTE block;
int pid;
PIE_THREAD_PARAM_BLOCK params = NULL;
if (!hData)
goto cleanup0;
pid = GetCurrentProcessId();
block = (PBYTE) SHLockShared(hData, pid);
hnfData = (HNFBlock *) block;
if (!block)
goto cleanup2;
if (hnfData->cbSize < sizeof(HNFBlock))
goto cleanup2;
params = SHCreateIETHREADPARAM(0, hnfData->offset8, 0, 0);
if (!params)
goto cleanup2;
params->dwFlags = hnfData->offset4;
params->offset8 = hnfData->offset8;
params->offset74 = hnfData->offsetC;
params->offsetD8 = hnfData->offset10;
params->offset84 = hnfData->offset14;
params->offset88 = hnfData->offset18;
params->offset8C = hnfData->offset1C;
params->offset90 = hnfData->offset20;
params->offset94 = hnfData->offset24;
params->offset98 = hnfData->offset28;
params->offset9C = hnfData->offset2C;
params->offsetA0 = hnfData->offset30;
block += sizeof(*hnfData);
if (hnfData->directoryPidlLength)
{
LPITEMIDLIST pidl = NULL;
if (*block)
pidl = ILClone((LPITEMIDLIST) block);
params->directoryPIDL = pidl;
block += hnfData->directoryPidlLength;
}
if (hnfData->pidlSize7C)
{
LPITEMIDLIST pidl = NULL;
if (*block)
pidl = ILClone((LPITEMIDLIST) block);
params->offset7C = pidl;
block += hnfData->pidlSize80;
}
if (hnfData->pidlSize80)
{
if (!(params->offset84 & 0x8000))
{
params->offset80 = *(LPITEMIDLIST *) block;
}
else
{
LPITEMIDLIST pidl = NULL;
if (*block)
pidl = ILClone((LPITEMIDLIST) block);
params->offset80 = pidl;
}
block += hnfData->pidlSize80;
}
if (hnfData->pathLength)
{
CComPtr<IShellFolder> psfDesktop;
PWSTR strPath = (PWSTR) block;
if (FAILED(SHGetDesktopFolder(&psfDesktop)))
{
params->directoryPIDL = NULL;
goto cleanup0;
}
if (FAILED(psfDesktop->ParseDisplayName(NULL, NULL, strPath, NULL, &params->directoryPIDL, NULL)))
{
params->directoryPIDL = NULL;
goto cleanup0;
}
}
cleanup2:
SHUnlockShared(hnfData);
SHFreeShared(hData, pid);
cleanup0:
if (!params->directoryPIDL)
{
SHDestroyIETHREADPARAM(params);
return NULL;
}
return params;
}
static HRESULT ExplorerMessageLoop(IEThreadParamBlock * parameters)
{
HRESULT hResult;
MSG Msg;
BOOL Ret;
// Tell the thread ref we are using it.
if (parameters && parameters->offsetF8)
parameters->offsetF8->AddRef();
/* Handle /e parameter */
UINT wFlags = 0;
if ((parameters->dwFlags & SH_EXPLORER_CMDLINE_FLAG_E))
wFlags |= SBSP_EXPLOREMODE;
/* Handle /select parameter */
PUITEMID_CHILD pidlSelect = NULL;
if ((parameters->dwFlags & SH_EXPLORER_CMDLINE_FLAG_SELECT) &&
(ILGetNext(parameters->directoryPIDL) != NULL))
{
pidlSelect = ILClone(ILFindLastID(parameters->directoryPIDL));
ILRemoveLastID(parameters->directoryPIDL);
}
CComPtr<IShellBrowser> psb;
hResult = CShellBrowser_CreateInstance(IID_PPV_ARG(IShellBrowser, &psb));
if (FAILED_UNEXPECTEDLY(hResult))
return hResult;
hResult = psb->BrowseObject(parameters->directoryPIDL, wFlags);
if (FAILED_UNEXPECTEDLY(hResult))
return hResult;
if (pidlSelect != NULL)
{
CComPtr<IShellView> shellView;
hResult = psb->QueryActiveShellView(&shellView);
if (SUCCEEDED(hResult))
{
shellView->SelectItem(pidlSelect, SVSI_SELECT|SVSI_ENSUREVISIBLE);
}
ILFree(pidlSelect);
}
CComPtr<IBrowserService2> browser;
hResult = psb->QueryInterface(IID_PPV_ARG(IBrowserService2, &browser));
if (FAILED_UNEXPECTEDLY(hResult))
return hResult;
psb.Release();
while ((Ret = GetMessage(&Msg, NULL, 0, 0)) != 0)
{
if (Ret == -1)
{
// Error: continue or exit?
break;
}
if (Msg.message == WM_QUIT)
break;
if (browser->v_MayTranslateAccelerator(&Msg) != S_OK)
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
}
int nrc = browser->Release();
if (nrc > 0)
{
DbgPrint("WARNING: There are %d references to the CShellBrowser active or leaked.\n", nrc);
}
browser.Detach();
// Tell the thread ref we are not using it anymore.
if (parameters && parameters->offsetF8)
parameters->offsetF8->Release();
return hResult;
}
static DWORD WINAPI BrowserThreadProc(LPVOID lpThreadParameter)
{
IEThreadParamBlock * parameters = (IEThreadParamBlock *) lpThreadParameter;
OleInitialize(NULL);
ExplorerMessageLoop(parameters);
/* Destroying the parameters releases the thread reference */
SHDestroyIETHREADPARAM(parameters);
/* Wake up the proxy desktop thread so it can check whether the last browser thread exited */
/* Use PostMessage in order to force GetMessage to return and check if all browser windows have exited */
PostMessageW(FindShellProxy(NULL), WM_EXPLORER_1037, 0, 0);
OleUninitialize();
return 0;
}
/*************************************************************************
* SHCreateIETHREADPARAM [BROWSEUI.123]
*/
extern "C" IEThreadParamBlock *WINAPI SHCreateIETHREADPARAM(
long param8, long paramC, IUnknown *param10, IUnknown *param14)
{
IEThreadParamBlock *result;
TRACE("SHCreateIETHREADPARAM\n");
result = (IEThreadParamBlock *) LocalAlloc(LMEM_ZEROINIT, 256);
if (result == NULL)
return NULL;
result->offset0 = param8;
result->offset8 = paramC;
result->offsetC = param10;
if (param10 != NULL)
param10->AddRef();
result->offset14 = param14;
if (param14 != NULL)
param14->AddRef();
return result;
}
/*************************************************************************
* SHCloneIETHREADPARAM [BROWSEUI.124]
*/
extern "C" IEThreadParamBlock *WINAPI SHCloneIETHREADPARAM(IEThreadParamBlock *param)
{
IEThreadParamBlock *result;
TRACE("SHCloneIETHREADPARAM\n");
result = (IEThreadParamBlock *) LocalAlloc(LMEM_FIXED, 256);
if (result == NULL)
return NULL;
memcpy(result, param, 0x40 * 4);
if (result->directoryPIDL != NULL)
result->directoryPIDL = ILClone(result->directoryPIDL);
if (result->offset7C != NULL)
result->offset7C = ILClone(result->offset7C);
if (result->offset80 != NULL)
result->offset80 = ILClone(result->offset80);
if (result->offset70 != NULL)
result->offset70->AddRef();
#if 0
if (result->offsetC != NULL)
result->offsetC->Method2C();
#endif
return result;
}
/*************************************************************************
* SHDestroyIETHREADPARAM [BROWSEUI.126]
*/
extern "C" void WINAPI SHDestroyIETHREADPARAM(IEThreadParamBlock *param)
{
TRACE("SHDestroyIETHREADPARAM\n");
if (param == NULL)
return;
if (param->directoryPIDL != NULL)
ILFree(param->directoryPIDL);
if (param->offset7C != NULL)
ILFree(param->offset7C);
if ((param->dwFlags & 0x80000) == 0 && param->offset80 != NULL)
ILFree(param->offset80);
if (param->offset14 != NULL)
param->offset14->Release();
if (param->offset70 != NULL)
param->offset70->Release();
if (param->offset78 != NULL)
param->offset78->Release();
if (param->offsetC != NULL)
param->offsetC->Release();
if (param->offsetF8 != NULL)
param->offsetF8->Release();
LocalFree(param);
}
/*************************************************************************
* SHOnCWMCommandLine [BROWSEUI.127]
*/
extern "C" BOOL WINAPI SHOnCWMCommandLine(HANDLE hSharedInfo)
{
TRACE("SHOnCWMCommandLine\n");
PIE_THREAD_PARAM_BLOCK params = ParseSharedPacket(hSharedInfo);
if (params)
return SHOpenFolderWindow(params);
SHDestroyIETHREADPARAM(params);
return FALSE;
}
/*************************************************************************
* SHOpenFolderWindow [BROWSEUI.102]
* see SHOpenNewFrame below for remarks
*/
extern "C" HRESULT WINAPI SHOpenFolderWindow(PIE_THREAD_PARAM_BLOCK parameters)
{
HANDLE threadHandle;
DWORD threadID;
WCHAR debugStr[MAX_PATH + 1];
SHGetPathFromIDListW(parameters->directoryPIDL, debugStr);
TRACE("SHOpenFolderWindow %p(%S)\n", parameters->directoryPIDL, debugStr);
PIE_THREAD_PARAM_BLOCK paramsCopy = SHCloneIETHREADPARAM(parameters);
SHGetInstanceExplorer(&(paramsCopy->offsetF8));
threadHandle = CreateThread(NULL, 0x10000, BrowserThreadProc, paramsCopy, 0, &threadID);
if (threadHandle != NULL)
{
CloseHandle(threadHandle);
return S_OK;
}
SHDestroyIETHREADPARAM(paramsCopy);
return E_FAIL;
}
// 75FA56C1h
// (pidl, 0, -1, 1)
// this function should handle creating a new process if needed, but I'm leaving that out for now
// this function always opens a new window - it does NOT check for duplicates
/*************************************************************************
* SHOpenNewFrame [BROWSEUI.103]
*/
extern "C" HRESULT WINAPI SHOpenNewFrame(LPITEMIDLIST pidl, IUnknown *paramC, long param10, DWORD dwFlags)
{
IEThreadParamBlock *parameters;
TRACE("SHOpenNewFrame\n");
parameters = SHCreateIETHREADPARAM(0, 1, paramC, NULL);
if (parameters == NULL)
{
ILFree(pidl);
return E_OUTOFMEMORY;
}
if (paramC != NULL)
parameters->offset10 = param10;
parameters->directoryPIDL = pidl;
parameters->dwFlags = dwFlags;
HRESULT hr = SHOpenFolderWindow(parameters);
SHDestroyIETHREADPARAM(parameters);
return hr;
}
/*************************************************************************
* SHCreateFromDesktop [BROWSEUI.106]
* parameter is a FolderInfo
*/
BOOL WINAPI SHCreateFromDesktop(ExplorerCommandLineParseResults * parseResults)
{
TRACE("SHCreateFromDesktop\n");
IEThreadParamBlock * parameters = SHCreateIETHREADPARAM(0, 0, 0, 0);
if (!parameters)
return FALSE;
PCWSTR strPath = NULL;
if (parseResults->dwFlags & SH_EXPLORER_CMDLINE_FLAG_STRING)
{
if (parseResults->pidlPath)
{
WARN("strPath and pidlPath are both assigned. This shouldn't happen.\n");
}
strPath = parseResults->strPath;
}
parameters->dwFlags = parseResults->dwFlags;
parameters->offset8 = parseResults->nCmdShow;
LPITEMIDLIST pidl = parseResults->pidlPath ? ILClone(parseResults->pidlPath) : NULL;
if (!pidl && parseResults->dwFlags & SH_EXPLORER_CMDLINE_FLAG_STRING)
{
if (parseResults->strPath && parseResults->strPath[0])
{
pidl = ILCreateFromPathW(parseResults->strPath);
}
}
// HACK! This shouldn't happen! SHExplorerParseCmdLine needs fixing.
if (!pidl)
{
SHGetFolderLocation(NULL, CSIDL_PERSONAL, NULL, NULL, &pidl);
}
parameters->directoryPIDL = pidl;
// Try to find the owner of the idlist, if we aren't running /SEPARATE
HWND desktop = NULL;
if (!(parseResults->dwFlags & SH_EXPLORER_CMDLINE_FLAG_SEPARATE))
desktop = FindShellProxy(parameters->directoryPIDL);
// If found, ask it to open the new window
if (desktop)
{
TRACE("Found desktop hwnd=%p\n", desktop);
DWORD dwProcessId;
GetWindowThreadProcessId(desktop, &dwProcessId);
AllowSetForegroundWindow(dwProcessId);
HANDLE hShared = MakeSharedPacket(parameters, strPath, dwProcessId);
if (hShared)
{
TRACE("Sending open message...\n");
PostMessageW(desktop, WM_EXPLORER_OPEN_NEW_WINDOW, 0, (LPARAM) hShared);
}
SHDestroyIETHREADPARAM(parameters);
return TRUE;
}
TRACE("Desktop not found or separate flag requested.\n");
// Else, start our own message loop!
HRESULT hr = CoInitialize(NULL);
CProxyDesktop * proxy = new CProxyDesktop(parameters);
if (proxy)
{
g_hwndProxyDesktop = proxy->Create(0);
LONG refCount;
CComPtr<IUnknown> thread;
if (SHCreateThreadRef(&refCount, &thread) >= 0)
{
SHSetInstanceExplorer(thread);
if (strPath)
parameters->directoryPIDL = ILCreateFromPath(strPath);
SHOpenFolderWindow(parameters);
parameters = NULL;
thread.Release();
}
MSG Msg;
while (GetMessageW(&Msg, 0, 0, 0) && refCount)
{
TranslateMessage(&Msg);
DispatchMessageW(&Msg);
}
DestroyWindow(g_hwndProxyDesktop);
delete proxy;
}
if (SUCCEEDED(hr))
CoUninitialize();
SHDestroyIETHREADPARAM(parameters);
return TRUE;
}