- return;
- cds.dwData = 0; /* FIXME */
- cds.cbData = inlen;
- cds.lpData = in;
- id = SendMessage(hwnd, WM_COPYDATA, (WPARAM)NULL, (LPARAM)&cds);
- debug(("return is %d\n", id));
- if (id > 0) {
- sprintf(mapname, "PageantReply%08x", id);
- filemap = OpenFileMapping(FILE_MAP_READ, FALSE, mapname);
- debug(("name is `%s', filemap is %p\n", mapname, filemap));
- debug(("error is %d\n", GetLastError()));
- if (filemap != NULL && filemap != INVALID_HANDLE_VALUE) {
- p = MapViewOfFile(filemap, FILE_MAP_READ, 0, 0, 0);
- debug(("p is %p\n", p));
- if (p) {
- retlen = *(int *)p;
- debug(("len is %d\n", retlen));
- ret = malloc(retlen);
- if (ret) {
- memcpy(ret, ((int *)p) + 1, retlen);
- *out = ret;
- *outlen = retlen;
- }
- UnmapViewOfFile(p);
- }
- CloseHandle(filemap);
- }
- /* FIXME: tell agent to close its handle too */
+ return 1; /* *out == NULL, so failure */
+ mapname = dupprintf("PageantRequest%08x", (unsigned)GetCurrentThreadId());
+ filemap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
+ 0, AGENT_MAX_MSGLEN, mapname);
+ if (!filemap)
+ return 1; /* *out == NULL, so failure */
+ p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0);
+ memcpy(p, in, inlen);
+ cds.dwData = AGENT_COPYDATA_ID;
+ cds.cbData = 1 + strlen(mapname);
+ cds.lpData = mapname;
+#ifdef WINDOWS_ASYNC_AGENT
+ if (callback != NULL && !(flags & FLAG_SYNCAGENT)) {
+ /*
+ * We need an asynchronous Pageant request. Since I know of
+ * no way to stop SendMessage from blocking the thread it's
+ * called in, I see no option but to start a fresh thread.
+ * When we're done we'll PostMessage the result back to our
+ * main window, so that the callback is done in the primary
+ * thread to avoid concurrency.
+ */
+ struct agent_query_data *data = snew(struct agent_query_data);
+ DWORD threadid;
+ data->mapping = p;
+ data->handle = filemap;
+ data->mapname = mapname;
+ data->callback = callback;
+ data->callback_ctx = callback_ctx;
+ data->cds = cds; /* structure copy */
+ data->hwnd = hwnd;
+ if (CreateThread(NULL, 0, agent_query_thread, data, 0, &threadid))
+ return 0;
+ sfree(data);