[PATCH 4/6] combase: Start surrogate local server when required.
Dmitry Timoshkov
dmitry at baikal.ru
Wed Mar 9 01:45:56 CST 2022
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=20296
Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
---
dlls/combase/rpc.c | 49 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/dlls/combase/rpc.c b/dlls/combase/rpc.c
index 0a86183030a..40f900175dd 100644
--- a/dlls/combase/rpc.c
+++ b/dlls/combase/rpc.c
@@ -522,6 +522,52 @@ static HRESULT create_server(REFCLSID rclsid, HANDLE *process)
return S_OK;
}
+static HRESULT create_surrogate_server(REFCLSID rclsid, HANDLE *process)
+{
+ static const WCHAR processidW[] = L" /PROCESSID:";
+ HKEY key;
+ HRESULT hr;
+ WCHAR command[MAX_PATH + ARRAY_SIZE(processidW) + CHARS_IN_GUID];
+ DWORD size;
+ STARTUPINFOW sinfo;
+ PROCESS_INFORMATION pinfo;
+ 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;
+
+ size = (MAX_PATH + 1) * sizeof(WCHAR);
+ ret = RegQueryValueExW(key, L"DllSurrogate", NULL, NULL, (LPBYTE)command, &size);
+ RegCloseKey(key);
+ if (ret || !size || !command[0])
+ {
+ TRACE("No value for DllSurrogate key\n");
+ wcscpy(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);
+
+ TRACE("Activating surrogate local server %s\n", debugstr_w(command));
+
+ if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &sinfo, &pinfo))
+ {
+ WARN("failed to run surrogate local server %s\n", debugstr_w(command));
+ return HRESULT_FROM_WIN32(GetLastError());
+ }
+ *process = pinfo.hProcess;
+ CloseHandle(pinfo.hThread);
+
+ return S_OK;
+}
+
HRESULT rpc_get_local_class_object(REFCLSID rclsid, REFIID riid, void **obj)
{
PMInterfacePointer objref = NULL;
@@ -546,7 +592,8 @@ HRESULT rpc_get_local_class_object(REFCLSID rclsid, REFIID riid, void **obj)
if (tries == 1)
{
- if ((hr = create_local_service(rclsid)) && (hr = create_server(rclsid, &process)) )
+ if ((hr = create_local_service(rclsid)) && (hr = create_server(rclsid, &process)) &&
+ (hr = create_surrogate_server(rclsid, &process)) )
return hr;
}
--
2.35.1
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