/* Starts listening for connections for the given pipe. */
int uv_pipe_listen(uv_pipe_t* handle, int backlog, uv_connection_cb cb) {
int i, errno;
uv_pipe_accept_t* req;
HANDLE pipeHandle;
if (handle->flags & UV_HANDLE_BIND_ERROR) {
uv_set_error(UV_EINVAL, 0);
return -1;
}
if (!(handle->flags & UV_HANDLE_BOUND) &&
!(handle->flags & UV_HANDLE_GIVEN_OS_HANDLE)) {
uv_set_error(UV_EINVAL, 0);
return -1;
}
if (handle->flags & UV_HANDLE_LISTENING ||
handle->flags & UV_HANDLE_READING) {
uv_set_error(UV_EALREADY, 0);
return -1;
}
if (!(handle->flags & UV_HANDLE_PIPESERVER) &&
!(handle->flags & UV_HANDLE_GIVEN_OS_HANDLE)) {
uv_set_error(UV_ENOTSUP, 0);
return -1;
}
handle->flags |= UV_HANDLE_LISTENING;
handle->connection_cb = cb;
if (handle->flags & UV_HANDLE_GIVEN_OS_HANDLE) {
handle->flags |= UV_HANDLE_PIPESERVER;
pipeHandle = handle->handle;
assert(pipeHandle != INVALID_HANDLE_VALUE);
req = &handle->accept_reqs[0];
uv_req_init((uv_req_t*) req);
req->pipeHandle = pipeHandle;
req->type = UV_ACCEPT;
req->data = handle;
req->next_pending = NULL;
if (uv_set_pipe_handle(handle, pipeHandle)) {
uv_set_sys_error(GetLastError());
return -1;
}
uv_pipe_queue_accept(handle, req, TRUE);
} else {
/* First pipe handle should have already been created in uv_pipe_bind */
assert(handle->accept_reqs[0].pipeHandle != INVALID_HANDLE_VALUE);
for (i = 0; i < COUNTOF(handle->accept_reqs); i++) {
uv_pipe_queue_accept(handle, &handle->accept_reqs[i], i == 0);
}
}
return 0;
}
static void uv_pipe_queue_accept(uv_pipe_t* handle, uv_pipe_accept_t* req, BOOL firstInstance) {
assert(handle->flags & UV_HANDLE_LISTENING);
if (!firstInstance) {
assert(req->pipeHandle == INVALID_HANDLE_VALUE);
req->pipeHandle = CreateNamedPipeW(handle->name,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES,
65536,
65536,
0,
NULL);
if (req->pipeHandle == INVALID_HANDLE_VALUE) {
req->error = uv_new_sys_error(GetLastError());
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return;
}
if (uv_set_pipe_handle(handle, req->pipeHandle)) {
CloseHandle(req->pipeHandle);
req->pipeHandle = INVALID_HANDLE_VALUE;
req->error = uv_new_sys_error(GetLastError());
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return;
}
}
assert(req->pipeHandle != INVALID_HANDLE_VALUE);
/* Prepare the overlapped structure. */
memset(&(req->overlapped), 0, sizeof(req->overlapped));
if (!ConnectNamedPipe(req->pipeHandle, &req->overlapped) && GetLastError() != ERROR_IO_PENDING) {
if (GetLastError() == ERROR_PIPE_CONNECTED) {
req->error = uv_ok_;
} else {
CloseHandle(req->pipeHandle);
req->pipeHandle = INVALID_HANDLE_VALUE;
/* Make this req pending reporting an error. */
req->error = uv_new_sys_error(GetLastError());
}
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return;
}
handle->reqs_pending++;
}
static DWORD WINAPI pipe_connect_thread_proc(void* parameter) {
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
int errno;
uv_pipe_t* handle;
uv_connect_t* req;
req = (uv_connect_t*)parameter;
assert(req);
handle = (uv_pipe_t*)req->handle;
assert(handle);
/* We're here because CreateFile on a pipe returned ERROR_PIPE_BUSY. We wait for the pipe to become available with WaitNamedPipe. */
while (WaitNamedPipeW(handle->name, 30000)) {
/* The pipe is now available, try to connect. */
pipeHandle = CreateFileW(handle->name,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (pipeHandle != INVALID_HANDLE_VALUE) {
break;
}
}
if (pipeHandle != INVALID_HANDLE_VALUE && !uv_set_pipe_handle(handle, pipeHandle)) {
handle->handle = pipeHandle;
req->error = uv_ok_;
} else {
req->error = uv_new_sys_error(GetLastError());
}
memset(&req->overlapped, 0, sizeof(req->overlapped));
/* Post completed */
if (!PostQueuedCompletionStatus(LOOP->iocp,
0,
0,
&req->overlapped)) {
uv_fatal_error(GetLastError(), "PostQueuedCompletionStatus");
}
return 0;
}
static DWORD WINAPI pipe_connect_thread_proc(void* parameter) {
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
int errno;
uv_loop_t* loop;
uv_pipe_t* handle;
uv_connect_t* req;
req = (uv_connect_t*) parameter;
assert(req);
handle = (uv_pipe_t*) req->handle;
assert(handle);
loop = handle->loop;
assert(loop);
/* We're here because CreateFile on a pipe returned ERROR_PIPE_BUSY. */
/* We wait for the pipe to become available with WaitNamedPipe. */
while (WaitNamedPipeW(handle->name, 30000)) {
/* The pipe is now available, try to connect. */
pipeHandle = CreateFileW(handle->name,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (pipeHandle != INVALID_HANDLE_VALUE) {
break;
}
SwitchToThread();
}
if (pipeHandle != INVALID_HANDLE_VALUE &&
!uv_set_pipe_handle(loop, handle, pipeHandle)) {
handle->handle = pipeHandle;
SET_REQ_SUCCESS(req);
} else {
SET_REQ_ERROR(req, GetLastError());
}
/* Post completed */
POST_COMPLETION_FOR_REQ(loop, req);
return 0;
}
void uv_pipe_open(uv_pipe_t* pipe, uv_file file) {
HANDLE os_handle = (HANDLE)_get_osfhandle(file);
if (os_handle == INVALID_HANDLE_VALUE ||
uv_set_pipe_handle(pipe->loop, pipe, os_handle) == -1) {
return;
}
uv_pipe_connection_init(pipe);
pipe->handle = os_handle;
if (pipe->ipc) {
assert(!(pipe->flags & UV_HANDLE_NON_OVERLAPPED_PIPE));
pipe->ipc_pid = uv_parent_pid();
assert(pipe->ipc_pid != -1);
}
}
int uv_pipe_open(uv_pipe_t* pipe, uv_file file) {
HANDLE os_handle = (HANDLE)_get_osfhandle(file);
if (os_handle == INVALID_HANDLE_VALUE ||
uv_set_pipe_handle(pipe->loop, pipe, os_handle, 0) == -1) {
uv__set_sys_error(pipe->loop, WSAEINVAL);
return -1;
}
uv_pipe_connection_init(pipe);
pipe->handle = os_handle;
pipe->flags |= UV_HANDLE_READABLE | UV_HANDLE_WRITABLE;
if (pipe->ipc) {
assert(!(pipe->flags & UV_HANDLE_NON_OVERLAPPED_PIPE));
pipe->ipc_pid = uv_parent_pid();
assert(pipe->ipc_pid != -1);
}
return 0;
}
static DWORD WINAPI pipe_connect_thread_proc(void* parameter) {
uv_loop_t* loop;
uv_pipe_t* handle;
uv_connect_t* req;
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
DWORD duplex_flags;
req = (uv_connect_t*) parameter;
assert(req);
handle = (uv_pipe_t*) req->handle;
assert(handle);
loop = handle->loop;
assert(loop);
/* We're here because CreateFile on a pipe returned ERROR_PIPE_BUSY. */
/* We wait for the pipe to become available with WaitNamedPipe. */
while (WaitNamedPipeW(handle->name, 30000)) {
/* The pipe is now available, try to connect. */
pipeHandle = open_named_pipe(handle->name, &duplex_flags);
if (pipeHandle != INVALID_HANDLE_VALUE) {
break;
}
SwitchToThread();
}
if (pipeHandle != INVALID_HANDLE_VALUE &&
!uv_set_pipe_handle(loop, handle, pipeHandle, duplex_flags)) {
SET_REQ_SUCCESS(req);
} else {
SET_REQ_ERROR(req, GetLastError());
}
/* Post completed */
POST_COMPLETION_FOR_REQ(loop, req);
return 0;
}
void uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
const char* name, uv_connect_cb cb) {
uv_loop_t* loop = handle->loop;
int errorno, nameSize;
HANDLE pipeHandle = INVALID_HANDLE_VALUE;
DWORD duplex_flags;
uv_req_init(loop, (uv_req_t*) req);
req->type = UV_CONNECT;
req->handle = (uv_stream_t*) handle;
req->cb = cb;
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(WCHAR);
handle->name = (WCHAR*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(WCHAR))) {
errorno = GetLastError();
goto error;
}
pipeHandle = open_named_pipe(handle->name, &duplex_flags);
if (pipeHandle == INVALID_HANDLE_VALUE) {
if (GetLastError() == ERROR_PIPE_BUSY) {
/* Wait for the server to make a pipe instance available. */
if (!QueueUserWorkItem(&pipe_connect_thread_proc,
req,
WT_EXECUTELONGFUNCTION)) {
errorno = GetLastError();
goto error;
}
REGISTER_HANDLE_REQ(loop, handle, req);
handle->reqs_pending++;
return;
}
errorno = GetLastError();
goto error;
}
assert(pipeHandle != INVALID_HANDLE_VALUE);
if (uv_set_pipe_handle(loop,
(uv_pipe_t*) req->handle,
pipeHandle,
duplex_flags)) {
errorno = GetLastError();
goto error;
}
SET_REQ_SUCCESS(req);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
REGISTER_HANDLE_REQ(loop, handle, req);
return;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (pipeHandle != INVALID_HANDLE_VALUE) {
CloseHandle(pipeHandle);
}
/* Make this req pending reporting an error. */
SET_REQ_ERROR(req, errorno);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
REGISTER_HANDLE_REQ(loop, handle, req);
return;
}
/* Creates a pipe server. */
int uv_pipe_bind(uv_pipe_t* handle, const char* name) {
uv_loop_t* loop = handle->loop;
int i, errorno, nameSize;
uv_pipe_accept_t* req;
if (handle->flags & UV_HANDLE_BOUND) {
uv__set_sys_error(loop, WSAEINVAL);
return -1;
}
if (!name) {
uv__set_sys_error(loop, WSAEINVAL);
return -1;
}
if (!(handle->flags & UV_HANDLE_PIPESERVER)) {
handle->pending_instances = default_pending_pipe_instances;
}
handle->accept_reqs = (uv_pipe_accept_t*)
malloc(sizeof(uv_pipe_accept_t) * handle->pending_instances);
if (!handle->accept_reqs) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
for (i = 0; i < handle->pending_instances; i++) {
req = &handle->accept_reqs[i];
uv_req_init(loop, (uv_req_t*) req);
req->type = UV_ACCEPT;
req->data = handle;
req->pipeHandle = INVALID_HANDLE_VALUE;
req->next_pending = NULL;
}
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(WCHAR);
handle->name = (WCHAR*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(WCHAR))) {
uv__set_sys_error(loop, GetLastError());
return -1;
}
/*
* Attempt to create the first pipe with FILE_FLAG_FIRST_PIPE_INSTANCE.
* If this fails then there's already a pipe server for the given pipe name.
*/
handle->accept_reqs[0].pipeHandle = CreateNamedPipeW(handle->name,
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED |
FILE_FLAG_FIRST_PIPE_INSTANCE,
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES, 65536, 65536, 0, NULL);
if (handle->accept_reqs[0].pipeHandle == INVALID_HANDLE_VALUE) {
errorno = GetLastError();
if (errorno == ERROR_ACCESS_DENIED) {
uv__set_error(loop, UV_EADDRINUSE, errorno);
} else if (errorno == ERROR_PATH_NOT_FOUND || errorno == ERROR_INVALID_NAME) {
uv__set_error(loop, UV_EACCES, errorno);
} else {
uv__set_sys_error(loop, errorno);
}
goto error;
}
if (uv_set_pipe_handle(loop, handle, handle->accept_reqs[0].pipeHandle, 0)) {
uv__set_sys_error(loop, GetLastError());
goto error;
}
handle->pending_accepts = NULL;
handle->flags |= UV_HANDLE_PIPESERVER;
handle->flags |= UV_HANDLE_BOUND;
return 0;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (handle->accept_reqs[0].pipeHandle != INVALID_HANDLE_VALUE) {
CloseHandle(handle->accept_reqs[0].pipeHandle);
handle->accept_reqs[0].pipeHandle = INVALID_HANDLE_VALUE;
}
return -1;
}
int uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
const char* name, uv_connect_cb cb) {
int errno, nameSize;
HANDLE pipeHandle;
handle->handle = INVALID_HANDLE_VALUE;
uv_req_init((uv_req_t*) req);
req->type = UV_CONNECT;
req->handle = (uv_stream_t*) handle;
req->cb = cb;
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(wchar_t);
handle->name = (wchar_t*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(wchar_t))) {
errno = GetLastError();
goto error;
}
pipeHandle = CreateFileW(handle->name,
GENERIC_READ | GENERIC_WRITE,
0,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,
NULL);
if (pipeHandle == INVALID_HANDLE_VALUE) {
if (GetLastError() == ERROR_PIPE_BUSY) {
/* Wait for the server to make a pipe instance available. */
if (!QueueUserWorkItem(&pipe_connect_thread_proc, req, WT_EXECUTELONGFUNCTION)) {
errno = GetLastError();
goto error;
}
return 0;
}
errno = GetLastError();
goto error;
}
if (uv_set_pipe_handle((uv_pipe_t*)req->handle, pipeHandle)) {
errno = GetLastError();
goto error;
}
handle->handle = pipeHandle;
req->error = uv_ok_;
uv_insert_pending_req((uv_req_t*) req);
handle->reqs_pending++;
return 0;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (pipeHandle != INVALID_HANDLE_VALUE) {
CloseHandle(pipeHandle);
}
uv_set_sys_error(errno);
return -1;
}
void uv_pipe_connect(uv_connect_t* req, uv_pipe_t* handle,
const char* name, uv_connect_cb cb) {
uv_loop_t* loop = handle->loop;
int errno, nameSize;
handle->handle = INVALID_HANDLE_VALUE;
uv_req_init(loop, (uv_req_t*) req);
req->type = UV_CONNECT;
req->handle = (uv_stream_t*) handle;
req->cb = cb;
/* Convert name to UTF16. */
nameSize = uv_utf8_to_utf16(name, NULL, 0) * sizeof(wchar_t);
handle->name = (wchar_t*)malloc(nameSize);
if (!handle->name) {
uv_fatal_error(ERROR_OUTOFMEMORY, "malloc");
}
if (!uv_utf8_to_utf16(name, handle->name, nameSize / sizeof(wchar_t))) {
errno = GetLastError();
goto error;
}
if (open_named_pipe(handle) != 0) {
if (GetLastError() == ERROR_PIPE_BUSY) {
/* Wait for the server to make a pipe instance available. */
if (!QueueUserWorkItem(&pipe_connect_thread_proc,
req,
WT_EXECUTELONGFUNCTION)) {
errno = GetLastError();
goto error;
}
handle->reqs_pending++;
return;
}
errno = GetLastError();
goto error;
}
assert(handle->handle != INVALID_HANDLE_VALUE);
/* Ensure that what we just opened is actually a pipe */
if (!GetNamedPipeInfo(handle->handle, NULL, NULL, NULL, NULL)) {
errno = WSAENOTSOCK;
goto error;
}
if (uv_set_pipe_handle(loop, (uv_pipe_t*)req->handle, handle->handle)) {
errno = GetLastError();
goto error;
}
SET_REQ_SUCCESS(req);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
return;
error:
if (handle->name) {
free(handle->name);
handle->name = NULL;
}
if (handle->handle != INVALID_HANDLE_VALUE) {
CloseHandle(handle->handle);
handle->handle = INVALID_HANDLE_VALUE;
}
/* Make this req pending reporting an error. */
SET_REQ_ERROR(req, errno);
uv_insert_pending_req(loop, (uv_req_t*) req);
handle->reqs_pending++;
return;
}
