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combase: Execute dllhost.exe for correct architecture in a WoW64 setup. 

Signed-off-by: Dmitry Timoshkov <dmitry@baikal.ru>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Dmitry Timoshkov 2022-03-16 13:14:47 +03:00 committed by Alexandre Julliard
parent cd2904fa1a
commit 13064f9914
2 changed files with 39 additions and 11 deletions
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48
dlls/combase/rpc.c
View File

@ -526,18 +526,24 @@ static HRESULT create_surrogate_server(REFCLSID rclsid, HANDLE *process)
{
static const WCHAR processidW[] = L" /PROCESSID:";
HKEY key;
int arch = (sizeof(void *) > sizeof(int)) ? 64 : 32;
REGSAM opposite = (arch == 64) ? KEY_WOW64_32KEY : KEY_WOW64_64KEY;
BOOL is_wow64 = FALSE;
HRESULT hr;
WCHAR command[MAX_PATH + ARRAY_SIZE(processidW) + CHARS_IN_GUID];
DWORD size;
STARTUPINFOW sinfo;
PROCESS_INFORMATION pinfo;
STARTUPINFOW si;
PROCESS_INFORMATION pi;
LONG ret;
TRACE("Attempting to start surrogate server for %s\n", debugstr_guid(rclsid));
hr = open_appidkey_from_clsid(rclsid, KEY_READ, &key);
if (FAILED(hr))
return hr;
if (FAILED(hr) && (arch == 64 || (IsWow64Process(GetCurrentProcess(), &is_wow64) && is_wow64)))
{
hr = open_appidkey_from_clsid(rclsid, opposite | KEY_READ, &key);
if (FAILED(hr)) return hr;
}
size = (MAX_PATH + 1) * sizeof(WCHAR);
ret = RegQueryValueExW(key, L"DllSurrogate", NULL, NULL, (LPBYTE)command, &size);
@ -545,25 +551,45 @@ static HRESULT create_surrogate_server(REFCLSID rclsid, HANDLE *process)
if (ret || !size || !command[0])
{
TRACE("No value for DllSurrogate key\n");
wcscpy(command, L"dllhost.exe");
if ((sizeof(void *) == 8 || is_wow64) && opposite == KEY_WOW64_32KEY)
GetSystemWow64DirectoryW(command, MAX_PATH - ARRAY_SIZE(L"\\dllhost.exe"));
else
GetSystemDirectoryW(command, MAX_PATH - ARRAY_SIZE(L"\\dllhost.exe"));
wcscat(command, L"\\dllhost.exe");
}
/* Surrogate EXE servers are started with the /PROCESSID:{GUID} switch. */
wcscat(command, processidW);
StringFromGUID2(rclsid, command + wcslen(command), CHARS_IN_GUID);
memset(&sinfo, 0, sizeof(sinfo));
sinfo.cb = sizeof(sinfo);
memset(&si, 0, sizeof(si));
si.cb = sizeof(si);
TRACE("Activating surrogate local server %s\n", debugstr_w(command));
if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &sinfo, &pinfo))
if (is_wow64 && arch == 64)
{
void *cookie;
Wow64DisableWow64FsRedirection(&cookie);
if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi))
{
WARN("failed to run surrogate local server %s\n", debugstr_w(command));
hr = HRESULT_FROM_WIN32(GetLastError());
}
Wow64RevertWow64FsRedirection(cookie);
}
else if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &si, &pi))
{
WARN("failed to run surrogate local server %s\n", debugstr_w(command));
return HRESULT_FROM_WIN32(GetLastError());
hr = HRESULT_FROM_WIN32(GetLastError());
}
*process = pinfo.hProcess;
CloseHandle(pinfo.hThread);
if (FAILED(hr)) return hr;
*process = pi.hProcess;
CloseHandle(pi.hThread);
return S_OK;
}

2
programs/dllhost/dllhost.c
View File

@ -327,6 +327,8 @@ int WINAPI wWinMain(HINSTANCE hinst, HINSTANCE previnst, LPWSTR cmdline, int sho
CLSID clsid;
struct surrogate surrogate;
TRACE("Running as %u-bit\n", (int)sizeof(void *) * 8);
if (wcsnicmp(cmdline, L"/PROCESSID:", 11))
return 0;