Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Support for overlapped IO |
| 3 | * |
| 4 | * Some code borrowed from Modules/_winapi.c of CPython |
| 5 | */ |
| 6 | |
| 7 | /* XXX check overflow and DWORD <-> Py_ssize_t conversions |
| 8 | Check itemsize */ |
| 9 | |
| 10 | #include "Python.h" |
| 11 | #include "structmember.h" |
| 12 | |
| 13 | #define WINDOWS_LEAN_AND_MEAN |
| 14 | #include <winsock2.h> |
| 15 | #include <ws2tcpip.h> |
| 16 | #include <mswsock.h> |
| 17 | |
| 18 | #if defined(MS_WIN32) && !defined(MS_WIN64) |
| 19 | # define F_POINTER "k" |
| 20 | # define T_POINTER T_ULONG |
| 21 | #else |
| 22 | # define F_POINTER "K" |
| 23 | # define T_POINTER T_ULONGLONG |
| 24 | #endif |
| 25 | |
Victor Stinner | ccdbe80 | 2016-04-01 21:37:41 +0200 | [diff] [blame] | 26 | /* Compatibility with Python 3.3 */ |
| 27 | #if PY_VERSION_HEX < 0x03040000 |
| 28 | # define PyMem_RawMalloc PyMem_Malloc |
| 29 | # define PyMem_RawFree PyMem_Free |
| 30 | #endif |
| 31 | |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 32 | #define F_HANDLE F_POINTER |
| 33 | #define F_ULONG_PTR F_POINTER |
| 34 | #define F_DWORD "k" |
| 35 | #define F_BOOL "i" |
| 36 | #define F_UINT "I" |
| 37 | |
| 38 | #define T_HANDLE T_POINTER |
| 39 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 40 | enum {TYPE_NONE, TYPE_NOT_STARTED, TYPE_READ, TYPE_READINTO, TYPE_WRITE, |
| 41 | TYPE_ACCEPT, TYPE_CONNECT, TYPE_DISCONNECT, TYPE_CONNECT_NAMED_PIPE, |
Andrew Svetlov | a19fb3c | 2018-02-25 19:32:14 +0300 | [diff] [blame] | 42 | TYPE_WAIT_NAMED_PIPE_AND_CONNECT, TYPE_TRANSMIT_FILE}; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 43 | |
| 44 | typedef struct { |
| 45 | PyObject_HEAD |
| 46 | OVERLAPPED overlapped; |
| 47 | /* For convenience, we store the file handle too */ |
| 48 | HANDLE handle; |
| 49 | /* Error returned by last method call */ |
| 50 | DWORD error; |
| 51 | /* Type of operation */ |
| 52 | DWORD type; |
| 53 | union { |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 54 | /* Buffer allocated by us: TYPE_READ and TYPE_ACCEPT */ |
| 55 | PyObject *allocated_buffer; |
| 56 | /* Buffer passed by the user: TYPE_WRITE and TYPE_READINTO */ |
| 57 | Py_buffer user_buffer; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 58 | }; |
| 59 | } OverlappedObject; |
| 60 | |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 61 | /* |
| 62 | * Map Windows error codes to subclasses of OSError |
| 63 | */ |
| 64 | |
| 65 | static PyObject * |
| 66 | SetFromWindowsErr(DWORD err) |
| 67 | { |
| 68 | PyObject *exception_type; |
| 69 | |
| 70 | if (err == 0) |
| 71 | err = GetLastError(); |
| 72 | switch (err) { |
| 73 | case ERROR_CONNECTION_REFUSED: |
| 74 | exception_type = PyExc_ConnectionRefusedError; |
| 75 | break; |
| 76 | case ERROR_CONNECTION_ABORTED: |
| 77 | exception_type = PyExc_ConnectionAbortedError; |
| 78 | break; |
| 79 | default: |
| 80 | exception_type = PyExc_OSError; |
| 81 | } |
| 82 | return PyErr_SetExcFromWindowsErr(exception_type, err); |
| 83 | } |
| 84 | |
| 85 | /* |
| 86 | * Some functions should be loaded at runtime |
| 87 | */ |
| 88 | |
| 89 | static LPFN_ACCEPTEX Py_AcceptEx = NULL; |
| 90 | static LPFN_CONNECTEX Py_ConnectEx = NULL; |
| 91 | static LPFN_DISCONNECTEX Py_DisconnectEx = NULL; |
Andrew Svetlov | a19fb3c | 2018-02-25 19:32:14 +0300 | [diff] [blame] | 92 | static LPFN_TRANSMITFILE Py_TransmitFile = NULL; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 93 | static BOOL (CALLBACK *Py_CancelIoEx)(HANDLE, LPOVERLAPPED) = NULL; |
| 94 | |
| 95 | #define GET_WSA_POINTER(s, x) \ |
| 96 | (SOCKET_ERROR != WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER, \ |
| 97 | &Guid##x, sizeof(Guid##x), &Py_##x, \ |
| 98 | sizeof(Py_##x), &dwBytes, NULL, NULL)) |
| 99 | |
| 100 | static int |
| 101 | initialize_function_pointers(void) |
| 102 | { |
| 103 | GUID GuidAcceptEx = WSAID_ACCEPTEX; |
| 104 | GUID GuidConnectEx = WSAID_CONNECTEX; |
| 105 | GUID GuidDisconnectEx = WSAID_DISCONNECTEX; |
Andrew Svetlov | a19fb3c | 2018-02-25 19:32:14 +0300 | [diff] [blame] | 106 | GUID GuidTransmitFile = WSAID_TRANSMITFILE; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 107 | HINSTANCE hKernel32; |
| 108 | SOCKET s; |
| 109 | DWORD dwBytes; |
| 110 | |
| 111 | s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); |
| 112 | if (s == INVALID_SOCKET) { |
| 113 | SetFromWindowsErr(WSAGetLastError()); |
| 114 | return -1; |
| 115 | } |
| 116 | |
| 117 | if (!GET_WSA_POINTER(s, AcceptEx) || |
| 118 | !GET_WSA_POINTER(s, ConnectEx) || |
Andrew Svetlov | a19fb3c | 2018-02-25 19:32:14 +0300 | [diff] [blame] | 119 | !GET_WSA_POINTER(s, DisconnectEx) || |
| 120 | !GET_WSA_POINTER(s, TransmitFile)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 121 | { |
| 122 | closesocket(s); |
| 123 | SetFromWindowsErr(WSAGetLastError()); |
| 124 | return -1; |
| 125 | } |
| 126 | |
| 127 | closesocket(s); |
| 128 | |
| 129 | /* On WinXP we will have Py_CancelIoEx == NULL */ |
| 130 | hKernel32 = GetModuleHandle("KERNEL32"); |
| 131 | *(FARPROC *)&Py_CancelIoEx = GetProcAddress(hKernel32, "CancelIoEx"); |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | /* |
| 136 | * Completion port stuff |
| 137 | */ |
| 138 | |
| 139 | PyDoc_STRVAR( |
| 140 | CreateIoCompletionPort_doc, |
| 141 | "CreateIoCompletionPort(handle, port, key, concurrency) -> port\n\n" |
| 142 | "Create a completion port or register a handle with a port."); |
| 143 | |
| 144 | static PyObject * |
| 145 | overlapped_CreateIoCompletionPort(PyObject *self, PyObject *args) |
| 146 | { |
| 147 | HANDLE FileHandle; |
| 148 | HANDLE ExistingCompletionPort; |
| 149 | ULONG_PTR CompletionKey; |
| 150 | DWORD NumberOfConcurrentThreads; |
| 151 | HANDLE ret; |
| 152 | |
| 153 | if (!PyArg_ParseTuple(args, F_HANDLE F_HANDLE F_ULONG_PTR F_DWORD, |
| 154 | &FileHandle, &ExistingCompletionPort, &CompletionKey, |
| 155 | &NumberOfConcurrentThreads)) |
| 156 | return NULL; |
| 157 | |
| 158 | Py_BEGIN_ALLOW_THREADS |
| 159 | ret = CreateIoCompletionPort(FileHandle, ExistingCompletionPort, |
| 160 | CompletionKey, NumberOfConcurrentThreads); |
| 161 | Py_END_ALLOW_THREADS |
| 162 | |
| 163 | if (ret == NULL) |
| 164 | return SetFromWindowsErr(0); |
| 165 | return Py_BuildValue(F_HANDLE, ret); |
| 166 | } |
| 167 | |
| 168 | PyDoc_STRVAR( |
| 169 | GetQueuedCompletionStatus_doc, |
| 170 | "GetQueuedCompletionStatus(port, msecs) -> (err, bytes, key, address)\n\n" |
| 171 | "Get a message from completion port. Wait for up to msecs milliseconds."); |
| 172 | |
| 173 | static PyObject * |
| 174 | overlapped_GetQueuedCompletionStatus(PyObject *self, PyObject *args) |
| 175 | { |
| 176 | HANDLE CompletionPort = NULL; |
| 177 | DWORD NumberOfBytes = 0; |
| 178 | ULONG_PTR CompletionKey = 0; |
| 179 | OVERLAPPED *Overlapped = NULL; |
| 180 | DWORD Milliseconds; |
| 181 | DWORD err; |
| 182 | BOOL ret; |
| 183 | |
| 184 | if (!PyArg_ParseTuple(args, F_HANDLE F_DWORD, |
| 185 | &CompletionPort, &Milliseconds)) |
| 186 | return NULL; |
| 187 | |
| 188 | Py_BEGIN_ALLOW_THREADS |
| 189 | ret = GetQueuedCompletionStatus(CompletionPort, &NumberOfBytes, |
| 190 | &CompletionKey, &Overlapped, Milliseconds); |
| 191 | Py_END_ALLOW_THREADS |
| 192 | |
| 193 | err = ret ? ERROR_SUCCESS : GetLastError(); |
| 194 | if (Overlapped == NULL) { |
| 195 | if (err == WAIT_TIMEOUT) |
| 196 | Py_RETURN_NONE; |
| 197 | else |
| 198 | return SetFromWindowsErr(err); |
| 199 | } |
| 200 | return Py_BuildValue(F_DWORD F_DWORD F_ULONG_PTR F_POINTER, |
| 201 | err, NumberOfBytes, CompletionKey, Overlapped); |
| 202 | } |
| 203 | |
| 204 | PyDoc_STRVAR( |
| 205 | PostQueuedCompletionStatus_doc, |
| 206 | "PostQueuedCompletionStatus(port, bytes, key, address) -> None\n\n" |
| 207 | "Post a message to completion port."); |
| 208 | |
| 209 | static PyObject * |
| 210 | overlapped_PostQueuedCompletionStatus(PyObject *self, PyObject *args) |
| 211 | { |
| 212 | HANDLE CompletionPort; |
| 213 | DWORD NumberOfBytes; |
| 214 | ULONG_PTR CompletionKey; |
| 215 | OVERLAPPED *Overlapped; |
| 216 | BOOL ret; |
| 217 | |
| 218 | if (!PyArg_ParseTuple(args, F_HANDLE F_DWORD F_ULONG_PTR F_POINTER, |
| 219 | &CompletionPort, &NumberOfBytes, &CompletionKey, |
| 220 | &Overlapped)) |
| 221 | return NULL; |
| 222 | |
| 223 | Py_BEGIN_ALLOW_THREADS |
| 224 | ret = PostQueuedCompletionStatus(CompletionPort, NumberOfBytes, |
| 225 | CompletionKey, Overlapped); |
| 226 | Py_END_ALLOW_THREADS |
| 227 | |
| 228 | if (!ret) |
| 229 | return SetFromWindowsErr(0); |
| 230 | Py_RETURN_NONE; |
| 231 | } |
| 232 | |
| 233 | /* |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 234 | * Wait for a handle |
| 235 | */ |
| 236 | |
| 237 | struct PostCallbackData { |
| 238 | HANDLE CompletionPort; |
| 239 | LPOVERLAPPED Overlapped; |
| 240 | }; |
| 241 | |
| 242 | static VOID CALLBACK |
| 243 | PostToQueueCallback(PVOID lpParameter, BOOL TimerOrWaitFired) |
| 244 | { |
| 245 | struct PostCallbackData *p = (struct PostCallbackData*) lpParameter; |
| 246 | |
| 247 | PostQueuedCompletionStatus(p->CompletionPort, TimerOrWaitFired, |
| 248 | 0, p->Overlapped); |
| 249 | /* ignore possible error! */ |
Victor Stinner | 6150f31 | 2016-03-16 23:25:02 +0100 | [diff] [blame] | 250 | PyMem_RawFree(p); |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | PyDoc_STRVAR( |
| 254 | RegisterWaitWithQueue_doc, |
| 255 | "RegisterWaitWithQueue(Object, CompletionPort, Overlapped, Timeout)\n" |
| 256 | " -> WaitHandle\n\n" |
| 257 | "Register wait for Object; when complete CompletionPort is notified.\n"); |
| 258 | |
| 259 | static PyObject * |
| 260 | overlapped_RegisterWaitWithQueue(PyObject *self, PyObject *args) |
| 261 | { |
| 262 | HANDLE NewWaitObject; |
| 263 | HANDLE Object; |
| 264 | ULONG Milliseconds; |
| 265 | struct PostCallbackData data, *pdata; |
| 266 | |
| 267 | if (!PyArg_ParseTuple(args, F_HANDLE F_HANDLE F_POINTER F_DWORD, |
| 268 | &Object, |
| 269 | &data.CompletionPort, |
| 270 | &data.Overlapped, |
| 271 | &Milliseconds)) |
| 272 | return NULL; |
| 273 | |
Victor Stinner | 6150f31 | 2016-03-16 23:25:02 +0100 | [diff] [blame] | 274 | /* Use PyMem_RawMalloc() rather than PyMem_Malloc(), since |
| 275 | PostToQueueCallback() will call PyMem_Free() from a new C thread |
| 276 | which doesn't hold the GIL. */ |
| 277 | pdata = PyMem_RawMalloc(sizeof(struct PostCallbackData)); |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 278 | if (pdata == NULL) |
| 279 | return SetFromWindowsErr(0); |
| 280 | |
| 281 | *pdata = data; |
| 282 | |
| 283 | if (!RegisterWaitForSingleObject( |
| 284 | &NewWaitObject, Object, (WAITORTIMERCALLBACK)PostToQueueCallback, |
| 285 | pdata, Milliseconds, |
| 286 | WT_EXECUTEINWAITTHREAD | WT_EXECUTEONLYONCE)) |
| 287 | { |
Victor Stinner | 6150f31 | 2016-03-16 23:25:02 +0100 | [diff] [blame] | 288 | PyMem_RawFree(pdata); |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 289 | return SetFromWindowsErr(0); |
| 290 | } |
| 291 | |
| 292 | return Py_BuildValue(F_HANDLE, NewWaitObject); |
| 293 | } |
| 294 | |
| 295 | PyDoc_STRVAR( |
| 296 | UnregisterWait_doc, |
| 297 | "UnregisterWait(WaitHandle) -> None\n\n" |
| 298 | "Unregister wait handle.\n"); |
| 299 | |
| 300 | static PyObject * |
| 301 | overlapped_UnregisterWait(PyObject *self, PyObject *args) |
| 302 | { |
| 303 | HANDLE WaitHandle; |
| 304 | BOOL ret; |
| 305 | |
| 306 | if (!PyArg_ParseTuple(args, F_HANDLE, &WaitHandle)) |
| 307 | return NULL; |
| 308 | |
| 309 | Py_BEGIN_ALLOW_THREADS |
| 310 | ret = UnregisterWait(WaitHandle); |
| 311 | Py_END_ALLOW_THREADS |
| 312 | |
| 313 | if (!ret) |
| 314 | return SetFromWindowsErr(0); |
| 315 | Py_RETURN_NONE; |
| 316 | } |
| 317 | |
Victor Stinner | d0a28de | 2015-01-21 23:39:51 +0100 | [diff] [blame] | 318 | PyDoc_STRVAR( |
| 319 | UnregisterWaitEx_doc, |
| 320 | "UnregisterWaitEx(WaitHandle, Event) -> None\n\n" |
| 321 | "Unregister wait handle.\n"); |
| 322 | |
| 323 | static PyObject * |
| 324 | overlapped_UnregisterWaitEx(PyObject *self, PyObject *args) |
| 325 | { |
| 326 | HANDLE WaitHandle, Event; |
| 327 | BOOL ret; |
| 328 | |
| 329 | if (!PyArg_ParseTuple(args, F_HANDLE F_HANDLE, &WaitHandle, &Event)) |
| 330 | return NULL; |
| 331 | |
| 332 | Py_BEGIN_ALLOW_THREADS |
| 333 | ret = UnregisterWaitEx(WaitHandle, Event); |
| 334 | Py_END_ALLOW_THREADS |
| 335 | |
| 336 | if (!ret) |
| 337 | return SetFromWindowsErr(0); |
| 338 | Py_RETURN_NONE; |
| 339 | } |
| 340 | |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 341 | /* |
| 342 | * Event functions -- currently only used by tests |
| 343 | */ |
| 344 | |
| 345 | PyDoc_STRVAR( |
| 346 | CreateEvent_doc, |
| 347 | "CreateEvent(EventAttributes, ManualReset, InitialState, Name)" |
| 348 | " -> Handle\n\n" |
| 349 | "Create an event. EventAttributes must be None.\n"); |
| 350 | |
| 351 | static PyObject * |
| 352 | overlapped_CreateEvent(PyObject *self, PyObject *args) |
| 353 | { |
| 354 | PyObject *EventAttributes; |
| 355 | BOOL ManualReset; |
| 356 | BOOL InitialState; |
| 357 | Py_UNICODE *Name; |
| 358 | HANDLE Event; |
| 359 | |
| 360 | if (!PyArg_ParseTuple(args, "O" F_BOOL F_BOOL "Z", |
| 361 | &EventAttributes, &ManualReset, |
| 362 | &InitialState, &Name)) |
| 363 | return NULL; |
| 364 | |
| 365 | if (EventAttributes != Py_None) { |
| 366 | PyErr_SetString(PyExc_ValueError, "EventAttributes must be None"); |
| 367 | return NULL; |
| 368 | } |
| 369 | |
| 370 | Py_BEGIN_ALLOW_THREADS |
| 371 | Event = CreateEventW(NULL, ManualReset, InitialState, Name); |
| 372 | Py_END_ALLOW_THREADS |
| 373 | |
| 374 | if (Event == NULL) |
| 375 | return SetFromWindowsErr(0); |
| 376 | return Py_BuildValue(F_HANDLE, Event); |
| 377 | } |
| 378 | |
| 379 | PyDoc_STRVAR( |
| 380 | SetEvent_doc, |
| 381 | "SetEvent(Handle) -> None\n\n" |
| 382 | "Set event.\n"); |
| 383 | |
| 384 | static PyObject * |
| 385 | overlapped_SetEvent(PyObject *self, PyObject *args) |
| 386 | { |
| 387 | HANDLE Handle; |
| 388 | BOOL ret; |
| 389 | |
| 390 | if (!PyArg_ParseTuple(args, F_HANDLE, &Handle)) |
| 391 | return NULL; |
| 392 | |
| 393 | Py_BEGIN_ALLOW_THREADS |
| 394 | ret = SetEvent(Handle); |
| 395 | Py_END_ALLOW_THREADS |
| 396 | |
| 397 | if (!ret) |
| 398 | return SetFromWindowsErr(0); |
| 399 | Py_RETURN_NONE; |
| 400 | } |
| 401 | |
| 402 | PyDoc_STRVAR( |
| 403 | ResetEvent_doc, |
| 404 | "ResetEvent(Handle) -> None\n\n" |
| 405 | "Reset event.\n"); |
| 406 | |
| 407 | static PyObject * |
| 408 | overlapped_ResetEvent(PyObject *self, PyObject *args) |
| 409 | { |
| 410 | HANDLE Handle; |
| 411 | BOOL ret; |
| 412 | |
| 413 | if (!PyArg_ParseTuple(args, F_HANDLE, &Handle)) |
| 414 | return NULL; |
| 415 | |
| 416 | Py_BEGIN_ALLOW_THREADS |
| 417 | ret = ResetEvent(Handle); |
| 418 | Py_END_ALLOW_THREADS |
| 419 | |
| 420 | if (!ret) |
| 421 | return SetFromWindowsErr(0); |
| 422 | Py_RETURN_NONE; |
| 423 | } |
| 424 | |
| 425 | /* |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 426 | * Bind socket handle to local port without doing slow getaddrinfo() |
| 427 | */ |
| 428 | |
| 429 | PyDoc_STRVAR( |
| 430 | BindLocal_doc, |
| 431 | "BindLocal(handle, family) -> None\n\n" |
| 432 | "Bind a socket handle to an arbitrary local port.\n" |
| 433 | "family should AF_INET or AF_INET6.\n"); |
| 434 | |
| 435 | static PyObject * |
| 436 | overlapped_BindLocal(PyObject *self, PyObject *args) |
| 437 | { |
| 438 | SOCKET Socket; |
| 439 | int Family; |
| 440 | BOOL ret; |
| 441 | |
| 442 | if (!PyArg_ParseTuple(args, F_HANDLE "i", &Socket, &Family)) |
| 443 | return NULL; |
| 444 | |
| 445 | if (Family == AF_INET) { |
| 446 | struct sockaddr_in addr; |
| 447 | memset(&addr, 0, sizeof(addr)); |
| 448 | addr.sin_family = AF_INET; |
| 449 | addr.sin_port = 0; |
| 450 | addr.sin_addr.S_un.S_addr = INADDR_ANY; |
| 451 | ret = bind(Socket, (SOCKADDR*)&addr, sizeof(addr)) != SOCKET_ERROR; |
| 452 | } else if (Family == AF_INET6) { |
| 453 | struct sockaddr_in6 addr; |
| 454 | memset(&addr, 0, sizeof(addr)); |
| 455 | addr.sin6_family = AF_INET6; |
| 456 | addr.sin6_port = 0; |
| 457 | addr.sin6_addr = in6addr_any; |
| 458 | ret = bind(Socket, (SOCKADDR*)&addr, sizeof(addr)) != SOCKET_ERROR; |
| 459 | } else { |
| 460 | PyErr_SetString(PyExc_ValueError, "expected tuple of length 2 or 4"); |
| 461 | return NULL; |
| 462 | } |
| 463 | |
| 464 | if (!ret) |
| 465 | return SetFromWindowsErr(WSAGetLastError()); |
| 466 | Py_RETURN_NONE; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * Windows equivalent of os.strerror() -- compare _ctypes/callproc.c |
| 471 | */ |
| 472 | |
| 473 | PyDoc_STRVAR( |
| 474 | FormatMessage_doc, |
| 475 | "FormatMessage(error_code) -> error_message\n\n" |
| 476 | "Return error message for an error code."); |
| 477 | |
| 478 | static PyObject * |
| 479 | overlapped_FormatMessage(PyObject *ignore, PyObject *args) |
| 480 | { |
| 481 | DWORD code, n; |
| 482 | WCHAR *lpMsgBuf; |
| 483 | PyObject *res; |
| 484 | |
| 485 | if (!PyArg_ParseTuple(args, F_DWORD, &code)) |
| 486 | return NULL; |
| 487 | |
| 488 | n = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | |
| 489 | FORMAT_MESSAGE_FROM_SYSTEM, |
| 490 | NULL, |
| 491 | code, |
| 492 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| 493 | (LPWSTR) &lpMsgBuf, |
| 494 | 0, |
| 495 | NULL); |
| 496 | if (n) { |
| 497 | while (iswspace(lpMsgBuf[n-1])) |
| 498 | --n; |
| 499 | lpMsgBuf[n] = L'\0'; |
| 500 | res = Py_BuildValue("u", lpMsgBuf); |
| 501 | } else { |
| 502 | res = PyUnicode_FromFormat("unknown error code %u", code); |
| 503 | } |
| 504 | LocalFree(lpMsgBuf); |
| 505 | return res; |
| 506 | } |
| 507 | |
| 508 | |
| 509 | /* |
| 510 | * Mark operation as completed - used when reading produces ERROR_BROKEN_PIPE |
| 511 | */ |
| 512 | |
| 513 | static void |
| 514 | mark_as_completed(OVERLAPPED *ov) |
| 515 | { |
| 516 | ov->Internal = 0; |
| 517 | if (ov->hEvent != NULL) |
| 518 | SetEvent(ov->hEvent); |
| 519 | } |
| 520 | |
| 521 | /* |
| 522 | * A Python object wrapping an OVERLAPPED structure and other useful data |
| 523 | * for overlapped I/O |
| 524 | */ |
| 525 | |
| 526 | PyDoc_STRVAR( |
| 527 | Overlapped_doc, |
| 528 | "Overlapped object"); |
| 529 | |
| 530 | static PyObject * |
| 531 | Overlapped_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 532 | { |
| 533 | OverlappedObject *self; |
| 534 | HANDLE event = INVALID_HANDLE_VALUE; |
| 535 | static char *kwlist[] = {"event", NULL}; |
| 536 | |
| 537 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "|" F_HANDLE, kwlist, &event)) |
| 538 | return NULL; |
| 539 | |
| 540 | if (event == INVALID_HANDLE_VALUE) { |
| 541 | event = CreateEvent(NULL, TRUE, FALSE, NULL); |
| 542 | if (event == NULL) |
| 543 | return SetFromWindowsErr(0); |
| 544 | } |
| 545 | |
| 546 | self = PyObject_New(OverlappedObject, type); |
| 547 | if (self == NULL) { |
| 548 | if (event != NULL) |
| 549 | CloseHandle(event); |
| 550 | return NULL; |
| 551 | } |
| 552 | |
| 553 | self->handle = NULL; |
| 554 | self->error = 0; |
| 555 | self->type = TYPE_NONE; |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 556 | self->allocated_buffer = NULL; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 557 | memset(&self->overlapped, 0, sizeof(OVERLAPPED)); |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 558 | memset(&self->user_buffer, 0, sizeof(Py_buffer)); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 559 | if (event) |
| 560 | self->overlapped.hEvent = event; |
| 561 | return (PyObject *)self; |
| 562 | } |
| 563 | |
| 564 | static void |
| 565 | Overlapped_dealloc(OverlappedObject *self) |
| 566 | { |
| 567 | DWORD bytes; |
| 568 | DWORD olderr = GetLastError(); |
| 569 | BOOL wait = FALSE; |
| 570 | BOOL ret; |
| 571 | |
| 572 | if (!HasOverlappedIoCompleted(&self->overlapped) && |
| 573 | self->type != TYPE_NOT_STARTED) |
| 574 | { |
| 575 | if (Py_CancelIoEx && Py_CancelIoEx(self->handle, &self->overlapped)) |
| 576 | wait = TRUE; |
| 577 | |
| 578 | Py_BEGIN_ALLOW_THREADS |
| 579 | ret = GetOverlappedResult(self->handle, &self->overlapped, |
| 580 | &bytes, wait); |
| 581 | Py_END_ALLOW_THREADS |
| 582 | |
| 583 | switch (ret ? ERROR_SUCCESS : GetLastError()) { |
| 584 | case ERROR_SUCCESS: |
| 585 | case ERROR_NOT_FOUND: |
| 586 | case ERROR_OPERATION_ABORTED: |
| 587 | break; |
| 588 | default: |
| 589 | PyErr_Format( |
| 590 | PyExc_RuntimeError, |
| 591 | "%R still has pending operation at " |
| 592 | "deallocation, the process may crash", self); |
| 593 | PyErr_WriteUnraisable(NULL); |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | if (self->overlapped.hEvent != NULL) |
| 598 | CloseHandle(self->overlapped.hEvent); |
| 599 | |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 600 | switch (self->type) { |
Victor Stinner | 91445fb | 2014-01-30 19:06:44 +0100 | [diff] [blame] | 601 | case TYPE_READ: |
| 602 | case TYPE_ACCEPT: |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 603 | Py_CLEAR(self->allocated_buffer); |
Victor Stinner | 91445fb | 2014-01-30 19:06:44 +0100 | [diff] [blame] | 604 | break; |
| 605 | case TYPE_WRITE: |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 606 | case TYPE_READINTO: |
| 607 | if (self->user_buffer.obj) |
| 608 | PyBuffer_Release(&self->user_buffer); |
Victor Stinner | 91445fb | 2014-01-30 19:06:44 +0100 | [diff] [blame] | 609 | break; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 610 | } |
| 611 | PyObject_Del(self); |
| 612 | SetLastError(olderr); |
| 613 | } |
| 614 | |
| 615 | PyDoc_STRVAR( |
| 616 | Overlapped_cancel_doc, |
| 617 | "cancel() -> None\n\n" |
| 618 | "Cancel overlapped operation"); |
| 619 | |
| 620 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 621 | Overlapped_cancel(OverlappedObject *self, PyObject *Py_UNUSED(ignored)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 622 | { |
| 623 | BOOL ret = TRUE; |
| 624 | |
| 625 | if (self->type == TYPE_NOT_STARTED |
| 626 | || self->type == TYPE_WAIT_NAMED_PIPE_AND_CONNECT) |
| 627 | Py_RETURN_NONE; |
| 628 | |
| 629 | if (!HasOverlappedIoCompleted(&self->overlapped)) { |
| 630 | Py_BEGIN_ALLOW_THREADS |
| 631 | if (Py_CancelIoEx) |
| 632 | ret = Py_CancelIoEx(self->handle, &self->overlapped); |
| 633 | else |
| 634 | ret = CancelIo(self->handle); |
| 635 | Py_END_ALLOW_THREADS |
| 636 | } |
| 637 | |
| 638 | /* CancelIoEx returns ERROR_NOT_FOUND if the I/O completed in-between */ |
| 639 | if (!ret && GetLastError() != ERROR_NOT_FOUND) |
| 640 | return SetFromWindowsErr(0); |
| 641 | Py_RETURN_NONE; |
| 642 | } |
| 643 | |
| 644 | PyDoc_STRVAR( |
| 645 | Overlapped_getresult_doc, |
| 646 | "getresult(wait=False) -> result\n\n" |
| 647 | "Retrieve result of operation. If wait is true then it blocks\n" |
| 648 | "until the operation is finished. If wait is false and the\n" |
| 649 | "operation is still pending then an error is raised."); |
| 650 | |
| 651 | static PyObject * |
| 652 | Overlapped_getresult(OverlappedObject *self, PyObject *args) |
| 653 | { |
| 654 | BOOL wait = FALSE; |
| 655 | DWORD transferred = 0; |
| 656 | BOOL ret; |
| 657 | DWORD err; |
| 658 | |
| 659 | if (!PyArg_ParseTuple(args, "|" F_BOOL, &wait)) |
| 660 | return NULL; |
| 661 | |
| 662 | if (self->type == TYPE_NONE) { |
| 663 | PyErr_SetString(PyExc_ValueError, "operation not yet attempted"); |
| 664 | return NULL; |
| 665 | } |
| 666 | |
| 667 | if (self->type == TYPE_NOT_STARTED) { |
| 668 | PyErr_SetString(PyExc_ValueError, "operation failed to start"); |
| 669 | return NULL; |
| 670 | } |
| 671 | |
| 672 | Py_BEGIN_ALLOW_THREADS |
| 673 | ret = GetOverlappedResult(self->handle, &self->overlapped, &transferred, |
| 674 | wait); |
| 675 | Py_END_ALLOW_THREADS |
| 676 | |
| 677 | self->error = err = ret ? ERROR_SUCCESS : GetLastError(); |
| 678 | switch (err) { |
| 679 | case ERROR_SUCCESS: |
| 680 | case ERROR_MORE_DATA: |
| 681 | break; |
| 682 | case ERROR_BROKEN_PIPE: |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 683 | if (self->type == TYPE_READ || self->type == TYPE_READINTO) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 684 | break; |
| 685 | /* fall through */ |
| 686 | default: |
| 687 | return SetFromWindowsErr(err); |
| 688 | } |
| 689 | |
| 690 | switch (self->type) { |
| 691 | case TYPE_READ: |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 692 | assert(PyBytes_CheckExact(self->allocated_buffer)); |
| 693 | if (transferred != PyBytes_GET_SIZE(self->allocated_buffer) && |
| 694 | _PyBytes_Resize(&self->allocated_buffer, transferred)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 695 | return NULL; |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 696 | Py_INCREF(self->allocated_buffer); |
| 697 | return self->allocated_buffer; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 698 | default: |
| 699 | return PyLong_FromUnsignedLong((unsigned long) transferred); |
| 700 | } |
| 701 | } |
| 702 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 703 | static PyObject * |
| 704 | do_ReadFile(OverlappedObject *self, HANDLE handle, |
| 705 | char *bufstart, DWORD buflen) |
| 706 | { |
| 707 | DWORD nread; |
| 708 | int ret; |
| 709 | DWORD err; |
| 710 | |
| 711 | Py_BEGIN_ALLOW_THREADS |
| 712 | ret = ReadFile(handle, bufstart, buflen, &nread, |
| 713 | &self->overlapped); |
| 714 | Py_END_ALLOW_THREADS |
| 715 | |
| 716 | self->error = err = ret ? ERROR_SUCCESS : GetLastError(); |
| 717 | switch (err) { |
| 718 | case ERROR_BROKEN_PIPE: |
| 719 | mark_as_completed(&self->overlapped); |
| 720 | return SetFromWindowsErr(err); |
| 721 | case ERROR_SUCCESS: |
| 722 | case ERROR_MORE_DATA: |
| 723 | case ERROR_IO_PENDING: |
| 724 | Py_RETURN_NONE; |
| 725 | default: |
| 726 | self->type = TYPE_NOT_STARTED; |
| 727 | return SetFromWindowsErr(err); |
| 728 | } |
| 729 | } |
| 730 | |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 731 | PyDoc_STRVAR( |
| 732 | Overlapped_ReadFile_doc, |
| 733 | "ReadFile(handle, size) -> Overlapped[message]\n\n" |
| 734 | "Start overlapped read"); |
| 735 | |
| 736 | static PyObject * |
| 737 | Overlapped_ReadFile(OverlappedObject *self, PyObject *args) |
| 738 | { |
| 739 | HANDLE handle; |
| 740 | DWORD size; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 741 | PyObject *buf; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 742 | |
| 743 | if (!PyArg_ParseTuple(args, F_HANDLE F_DWORD, &handle, &size)) |
| 744 | return NULL; |
| 745 | |
| 746 | if (self->type != TYPE_NONE) { |
| 747 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 748 | return NULL; |
| 749 | } |
| 750 | |
| 751 | #if SIZEOF_SIZE_T <= SIZEOF_LONG |
| 752 | size = Py_MIN(size, (DWORD)PY_SSIZE_T_MAX); |
| 753 | #endif |
| 754 | buf = PyBytes_FromStringAndSize(NULL, Py_MAX(size, 1)); |
| 755 | if (buf == NULL) |
| 756 | return NULL; |
| 757 | |
| 758 | self->type = TYPE_READ; |
| 759 | self->handle = handle; |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 760 | self->allocated_buffer = buf; |
| 761 | |
| 762 | return do_ReadFile(self, handle, PyBytes_AS_STRING(buf), size); |
| 763 | } |
| 764 | |
| 765 | PyDoc_STRVAR( |
| 766 | Overlapped_ReadFileInto_doc, |
| 767 | "ReadFileInto(handle, buf) -> Overlapped[bytes_transferred]\n\n" |
| 768 | "Start overlapped receive"); |
| 769 | |
| 770 | static PyObject * |
| 771 | Overlapped_ReadFileInto(OverlappedObject *self, PyObject *args) |
| 772 | { |
| 773 | HANDLE handle; |
| 774 | PyObject *bufobj; |
| 775 | |
| 776 | if (!PyArg_ParseTuple(args, F_HANDLE "O", &handle, &bufobj)) |
| 777 | return NULL; |
| 778 | |
| 779 | if (self->type != TYPE_NONE) { |
| 780 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 781 | return NULL; |
| 782 | } |
| 783 | |
| 784 | if (!PyArg_Parse(bufobj, "y*", &self->user_buffer)) |
| 785 | return NULL; |
| 786 | |
| 787 | #if SIZEOF_SIZE_T > SIZEOF_LONG |
| 788 | if (self->user_buffer.len > (Py_ssize_t)ULONG_MAX) { |
| 789 | PyBuffer_Release(&self->user_buffer); |
| 790 | PyErr_SetString(PyExc_ValueError, "buffer too large"); |
| 791 | return NULL; |
| 792 | } |
| 793 | #endif |
| 794 | |
| 795 | self->type = TYPE_READINTO; |
| 796 | self->handle = handle; |
| 797 | |
| 798 | return do_ReadFile(self, handle, self->user_buffer.buf, |
| 799 | (DWORD)self->user_buffer.len); |
| 800 | } |
| 801 | |
| 802 | static PyObject * |
| 803 | do_WSARecv(OverlappedObject *self, HANDLE handle, |
| 804 | char *bufstart, DWORD buflen, DWORD flags) |
| 805 | { |
| 806 | DWORD nread; |
| 807 | WSABUF wsabuf; |
| 808 | int ret; |
| 809 | DWORD err; |
Serhiy Storchaka | bdf4298 | 2017-10-26 16:59:40 +0300 | [diff] [blame] | 810 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 811 | wsabuf.buf = bufstart; |
| 812 | wsabuf.len = buflen; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 813 | |
| 814 | Py_BEGIN_ALLOW_THREADS |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 815 | ret = WSARecv((SOCKET)handle, &wsabuf, 1, &nread, &flags, |
| 816 | &self->overlapped, NULL); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 817 | Py_END_ALLOW_THREADS |
| 818 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 819 | self->error = err = (ret < 0 ? WSAGetLastError() : ERROR_SUCCESS); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 820 | switch (err) { |
| 821 | case ERROR_BROKEN_PIPE: |
| 822 | mark_as_completed(&self->overlapped); |
Victor Stinner | 41063d2 | 2015-01-26 22:30:49 +0100 | [diff] [blame] | 823 | return SetFromWindowsErr(err); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 824 | case ERROR_SUCCESS: |
| 825 | case ERROR_MORE_DATA: |
| 826 | case ERROR_IO_PENDING: |
| 827 | Py_RETURN_NONE; |
| 828 | default: |
| 829 | self->type = TYPE_NOT_STARTED; |
| 830 | return SetFromWindowsErr(err); |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | PyDoc_STRVAR( |
| 835 | Overlapped_WSARecv_doc, |
| 836 | "RecvFile(handle, size, flags) -> Overlapped[message]\n\n" |
| 837 | "Start overlapped receive"); |
| 838 | |
| 839 | static PyObject * |
| 840 | Overlapped_WSARecv(OverlappedObject *self, PyObject *args) |
| 841 | { |
| 842 | HANDLE handle; |
| 843 | DWORD size; |
| 844 | DWORD flags = 0; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 845 | PyObject *buf; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 846 | |
| 847 | if (!PyArg_ParseTuple(args, F_HANDLE F_DWORD "|" F_DWORD, |
| 848 | &handle, &size, &flags)) |
| 849 | return NULL; |
| 850 | |
| 851 | if (self->type != TYPE_NONE) { |
| 852 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 853 | return NULL; |
| 854 | } |
| 855 | |
| 856 | #if SIZEOF_SIZE_T <= SIZEOF_LONG |
| 857 | size = Py_MIN(size, (DWORD)PY_SSIZE_T_MAX); |
| 858 | #endif |
| 859 | buf = PyBytes_FromStringAndSize(NULL, Py_MAX(size, 1)); |
| 860 | if (buf == NULL) |
| 861 | return NULL; |
| 862 | |
| 863 | self->type = TYPE_READ; |
| 864 | self->handle = handle; |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 865 | self->allocated_buffer = buf; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 866 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 867 | return do_WSARecv(self, handle, PyBytes_AS_STRING(buf), size, flags); |
| 868 | } |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 869 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 870 | PyDoc_STRVAR( |
| 871 | Overlapped_WSARecvInto_doc, |
| 872 | "WSARecvInto(handle, buf, flags) -> Overlapped[bytes_transferred]\n\n" |
| 873 | "Start overlapped receive"); |
| 874 | |
| 875 | static PyObject * |
| 876 | Overlapped_WSARecvInto(OverlappedObject *self, PyObject *args) |
| 877 | { |
| 878 | HANDLE handle; |
| 879 | PyObject *bufobj; |
| 880 | DWORD flags; |
| 881 | |
| 882 | if (!PyArg_ParseTuple(args, F_HANDLE "O" F_DWORD, |
| 883 | &handle, &bufobj, &flags)) |
| 884 | return NULL; |
| 885 | |
| 886 | if (self->type != TYPE_NONE) { |
| 887 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 888 | return NULL; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 889 | } |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 890 | |
| 891 | if (!PyArg_Parse(bufobj, "y*", &self->user_buffer)) |
| 892 | return NULL; |
| 893 | |
| 894 | #if SIZEOF_SIZE_T > SIZEOF_LONG |
| 895 | if (self->user_buffer.len > (Py_ssize_t)ULONG_MAX) { |
| 896 | PyBuffer_Release(&self->user_buffer); |
| 897 | PyErr_SetString(PyExc_ValueError, "buffer too large"); |
| 898 | return NULL; |
| 899 | } |
| 900 | #endif |
| 901 | |
| 902 | self->type = TYPE_READINTO; |
| 903 | self->handle = handle; |
| 904 | |
| 905 | return do_WSARecv(self, handle, self->user_buffer.buf, |
| 906 | (DWORD)self->user_buffer.len, flags); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | PyDoc_STRVAR( |
| 910 | Overlapped_WriteFile_doc, |
| 911 | "WriteFile(handle, buf) -> Overlapped[bytes_transferred]\n\n" |
| 912 | "Start overlapped write"); |
| 913 | |
| 914 | static PyObject * |
| 915 | Overlapped_WriteFile(OverlappedObject *self, PyObject *args) |
| 916 | { |
| 917 | HANDLE handle; |
| 918 | PyObject *bufobj; |
| 919 | DWORD written; |
| 920 | BOOL ret; |
| 921 | DWORD err; |
| 922 | |
| 923 | if (!PyArg_ParseTuple(args, F_HANDLE "O", &handle, &bufobj)) |
| 924 | return NULL; |
| 925 | |
| 926 | if (self->type != TYPE_NONE) { |
| 927 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 928 | return NULL; |
| 929 | } |
| 930 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 931 | if (!PyArg_Parse(bufobj, "y*", &self->user_buffer)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 932 | return NULL; |
| 933 | |
| 934 | #if SIZEOF_SIZE_T > SIZEOF_LONG |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 935 | if (self->user_buffer.len > (Py_ssize_t)ULONG_MAX) { |
| 936 | PyBuffer_Release(&self->user_buffer); |
Oren Milman | d83c23b | 2017-08-15 19:04:18 +0300 | [diff] [blame] | 937 | PyErr_SetString(PyExc_ValueError, "buffer too large"); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 938 | return NULL; |
| 939 | } |
| 940 | #endif |
| 941 | |
| 942 | self->type = TYPE_WRITE; |
| 943 | self->handle = handle; |
| 944 | |
| 945 | Py_BEGIN_ALLOW_THREADS |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 946 | ret = WriteFile(handle, self->user_buffer.buf, |
| 947 | (DWORD)self->user_buffer.len, |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 948 | &written, &self->overlapped); |
| 949 | Py_END_ALLOW_THREADS |
| 950 | |
| 951 | self->error = err = ret ? ERROR_SUCCESS : GetLastError(); |
| 952 | switch (err) { |
| 953 | case ERROR_SUCCESS: |
| 954 | case ERROR_IO_PENDING: |
| 955 | Py_RETURN_NONE; |
| 956 | default: |
| 957 | self->type = TYPE_NOT_STARTED; |
| 958 | return SetFromWindowsErr(err); |
| 959 | } |
| 960 | } |
| 961 | |
| 962 | PyDoc_STRVAR( |
| 963 | Overlapped_WSASend_doc, |
| 964 | "WSASend(handle, buf, flags) -> Overlapped[bytes_transferred]\n\n" |
| 965 | "Start overlapped send"); |
| 966 | |
| 967 | static PyObject * |
| 968 | Overlapped_WSASend(OverlappedObject *self, PyObject *args) |
| 969 | { |
| 970 | HANDLE handle; |
| 971 | PyObject *bufobj; |
| 972 | DWORD flags; |
| 973 | DWORD written; |
| 974 | WSABUF wsabuf; |
| 975 | int ret; |
| 976 | DWORD err; |
| 977 | |
| 978 | if (!PyArg_ParseTuple(args, F_HANDLE "O" F_DWORD, |
| 979 | &handle, &bufobj, &flags)) |
| 980 | return NULL; |
| 981 | |
| 982 | if (self->type != TYPE_NONE) { |
| 983 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 984 | return NULL; |
| 985 | } |
| 986 | |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 987 | if (!PyArg_Parse(bufobj, "y*", &self->user_buffer)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 988 | return NULL; |
| 989 | |
| 990 | #if SIZEOF_SIZE_T > SIZEOF_LONG |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 991 | if (self->user_buffer.len > (Py_ssize_t)ULONG_MAX) { |
| 992 | PyBuffer_Release(&self->user_buffer); |
Oren Milman | d83c23b | 2017-08-15 19:04:18 +0300 | [diff] [blame] | 993 | PyErr_SetString(PyExc_ValueError, "buffer too large"); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 994 | return NULL; |
| 995 | } |
| 996 | #endif |
| 997 | |
| 998 | self->type = TYPE_WRITE; |
| 999 | self->handle = handle; |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 1000 | wsabuf.len = (DWORD)self->user_buffer.len; |
| 1001 | wsabuf.buf = self->user_buffer.buf; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1002 | |
| 1003 | Py_BEGIN_ALLOW_THREADS |
| 1004 | ret = WSASend((SOCKET)handle, &wsabuf, 1, &written, flags, |
| 1005 | &self->overlapped, NULL); |
| 1006 | Py_END_ALLOW_THREADS |
| 1007 | |
| 1008 | self->error = err = (ret < 0 ? WSAGetLastError() : ERROR_SUCCESS); |
| 1009 | switch (err) { |
| 1010 | case ERROR_SUCCESS: |
| 1011 | case ERROR_IO_PENDING: |
| 1012 | Py_RETURN_NONE; |
| 1013 | default: |
| 1014 | self->type = TYPE_NOT_STARTED; |
| 1015 | return SetFromWindowsErr(err); |
| 1016 | } |
| 1017 | } |
| 1018 | |
| 1019 | PyDoc_STRVAR( |
| 1020 | Overlapped_AcceptEx_doc, |
| 1021 | "AcceptEx(listen_handle, accept_handle) -> Overlapped[address_as_bytes]\n\n" |
| 1022 | "Start overlapped wait for client to connect"); |
| 1023 | |
| 1024 | static PyObject * |
| 1025 | Overlapped_AcceptEx(OverlappedObject *self, PyObject *args) |
| 1026 | { |
| 1027 | SOCKET ListenSocket; |
| 1028 | SOCKET AcceptSocket; |
| 1029 | DWORD BytesReceived; |
| 1030 | DWORD size; |
| 1031 | PyObject *buf; |
| 1032 | BOOL ret; |
| 1033 | DWORD err; |
| 1034 | |
| 1035 | if (!PyArg_ParseTuple(args, F_HANDLE F_HANDLE, |
| 1036 | &ListenSocket, &AcceptSocket)) |
| 1037 | return NULL; |
| 1038 | |
| 1039 | if (self->type != TYPE_NONE) { |
| 1040 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 1041 | return NULL; |
| 1042 | } |
| 1043 | |
| 1044 | size = sizeof(struct sockaddr_in6) + 16; |
| 1045 | buf = PyBytes_FromStringAndSize(NULL, size*2); |
| 1046 | if (!buf) |
| 1047 | return NULL; |
| 1048 | |
| 1049 | self->type = TYPE_ACCEPT; |
| 1050 | self->handle = (HANDLE)ListenSocket; |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 1051 | self->allocated_buffer = buf; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1052 | |
| 1053 | Py_BEGIN_ALLOW_THREADS |
| 1054 | ret = Py_AcceptEx(ListenSocket, AcceptSocket, PyBytes_AS_STRING(buf), |
| 1055 | 0, size, size, &BytesReceived, &self->overlapped); |
| 1056 | Py_END_ALLOW_THREADS |
| 1057 | |
| 1058 | self->error = err = ret ? ERROR_SUCCESS : WSAGetLastError(); |
| 1059 | switch (err) { |
| 1060 | case ERROR_SUCCESS: |
| 1061 | case ERROR_IO_PENDING: |
| 1062 | Py_RETURN_NONE; |
| 1063 | default: |
| 1064 | self->type = TYPE_NOT_STARTED; |
| 1065 | return SetFromWindowsErr(err); |
| 1066 | } |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | static int |
| 1071 | parse_address(PyObject *obj, SOCKADDR *Address, int Length) |
| 1072 | { |
Steve Dower | cc16be8 | 2016-09-08 10:35:16 -0700 | [diff] [blame] | 1073 | Py_UNICODE *Host; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1074 | unsigned short Port; |
| 1075 | unsigned long FlowInfo; |
| 1076 | unsigned long ScopeId; |
| 1077 | |
| 1078 | memset(Address, 0, Length); |
| 1079 | |
Steve Dower | cc16be8 | 2016-09-08 10:35:16 -0700 | [diff] [blame] | 1080 | if (PyArg_ParseTuple(obj, "uH", &Host, &Port)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1081 | { |
| 1082 | Address->sa_family = AF_INET; |
Steve Dower | cc16be8 | 2016-09-08 10:35:16 -0700 | [diff] [blame] | 1083 | if (WSAStringToAddressW(Host, AF_INET, NULL, Address, &Length) < 0) { |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1084 | SetFromWindowsErr(WSAGetLastError()); |
| 1085 | return -1; |
| 1086 | } |
| 1087 | ((SOCKADDR_IN*)Address)->sin_port = htons(Port); |
| 1088 | return Length; |
| 1089 | } |
Oren Milman | 1d1d3e9 | 2017-08-20 18:35:36 +0300 | [diff] [blame] | 1090 | else if (PyArg_ParseTuple(obj, |
| 1091 | "uHkk;ConnectEx(): illegal address_as_bytes " |
| 1092 | "argument", &Host, &Port, &FlowInfo, &ScopeId)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1093 | { |
| 1094 | PyErr_Clear(); |
| 1095 | Address->sa_family = AF_INET6; |
Steve Dower | cc16be8 | 2016-09-08 10:35:16 -0700 | [diff] [blame] | 1096 | if (WSAStringToAddressW(Host, AF_INET6, NULL, Address, &Length) < 0) { |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1097 | SetFromWindowsErr(WSAGetLastError()); |
| 1098 | return -1; |
| 1099 | } |
| 1100 | ((SOCKADDR_IN6*)Address)->sin6_port = htons(Port); |
| 1101 | ((SOCKADDR_IN6*)Address)->sin6_flowinfo = FlowInfo; |
| 1102 | ((SOCKADDR_IN6*)Address)->sin6_scope_id = ScopeId; |
| 1103 | return Length; |
| 1104 | } |
| 1105 | |
| 1106 | return -1; |
| 1107 | } |
| 1108 | |
| 1109 | |
| 1110 | PyDoc_STRVAR( |
| 1111 | Overlapped_ConnectEx_doc, |
| 1112 | "ConnectEx(client_handle, address_as_bytes) -> Overlapped[None]\n\n" |
| 1113 | "Start overlapped connect. client_handle should be unbound."); |
| 1114 | |
| 1115 | static PyObject * |
| 1116 | Overlapped_ConnectEx(OverlappedObject *self, PyObject *args) |
| 1117 | { |
| 1118 | SOCKET ConnectSocket; |
| 1119 | PyObject *AddressObj; |
| 1120 | char AddressBuf[sizeof(struct sockaddr_in6)]; |
| 1121 | SOCKADDR *Address = (SOCKADDR*)AddressBuf; |
| 1122 | int Length; |
| 1123 | BOOL ret; |
| 1124 | DWORD err; |
| 1125 | |
Oren Milman | 1d1d3e9 | 2017-08-20 18:35:36 +0300 | [diff] [blame] | 1126 | if (!PyArg_ParseTuple(args, F_HANDLE "O!:ConnectEx", |
| 1127 | &ConnectSocket, &PyTuple_Type, &AddressObj)) |
| 1128 | { |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1129 | return NULL; |
Oren Milman | 1d1d3e9 | 2017-08-20 18:35:36 +0300 | [diff] [blame] | 1130 | } |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1131 | |
| 1132 | if (self->type != TYPE_NONE) { |
| 1133 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 1134 | return NULL; |
| 1135 | } |
| 1136 | |
| 1137 | Length = sizeof(AddressBuf); |
| 1138 | Length = parse_address(AddressObj, Address, Length); |
| 1139 | if (Length < 0) |
| 1140 | return NULL; |
| 1141 | |
| 1142 | self->type = TYPE_CONNECT; |
| 1143 | self->handle = (HANDLE)ConnectSocket; |
| 1144 | |
| 1145 | Py_BEGIN_ALLOW_THREADS |
| 1146 | ret = Py_ConnectEx(ConnectSocket, Address, Length, |
| 1147 | NULL, 0, NULL, &self->overlapped); |
| 1148 | Py_END_ALLOW_THREADS |
| 1149 | |
| 1150 | self->error = err = ret ? ERROR_SUCCESS : WSAGetLastError(); |
| 1151 | switch (err) { |
| 1152 | case ERROR_SUCCESS: |
| 1153 | case ERROR_IO_PENDING: |
| 1154 | Py_RETURN_NONE; |
| 1155 | default: |
| 1156 | self->type = TYPE_NOT_STARTED; |
| 1157 | return SetFromWindowsErr(err); |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | PyDoc_STRVAR( |
| 1162 | Overlapped_DisconnectEx_doc, |
| 1163 | "DisconnectEx(handle, flags) -> Overlapped[None]\n\n" |
| 1164 | "Start overlapped connect. client_handle should be unbound."); |
| 1165 | |
| 1166 | static PyObject * |
| 1167 | Overlapped_DisconnectEx(OverlappedObject *self, PyObject *args) |
| 1168 | { |
| 1169 | SOCKET Socket; |
| 1170 | DWORD flags; |
| 1171 | BOOL ret; |
| 1172 | DWORD err; |
| 1173 | |
| 1174 | if (!PyArg_ParseTuple(args, F_HANDLE F_DWORD, &Socket, &flags)) |
| 1175 | return NULL; |
| 1176 | |
| 1177 | if (self->type != TYPE_NONE) { |
| 1178 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 1179 | return NULL; |
| 1180 | } |
| 1181 | |
| 1182 | self->type = TYPE_DISCONNECT; |
| 1183 | self->handle = (HANDLE)Socket; |
| 1184 | |
| 1185 | Py_BEGIN_ALLOW_THREADS |
| 1186 | ret = Py_DisconnectEx(Socket, &self->overlapped, flags, 0); |
| 1187 | Py_END_ALLOW_THREADS |
| 1188 | |
| 1189 | self->error = err = ret ? ERROR_SUCCESS : WSAGetLastError(); |
| 1190 | switch (err) { |
| 1191 | case ERROR_SUCCESS: |
| 1192 | case ERROR_IO_PENDING: |
| 1193 | Py_RETURN_NONE; |
| 1194 | default: |
| 1195 | self->type = TYPE_NOT_STARTED; |
| 1196 | return SetFromWindowsErr(err); |
| 1197 | } |
| 1198 | } |
| 1199 | |
| 1200 | PyDoc_STRVAR( |
Andrew Svetlov | a19fb3c | 2018-02-25 19:32:14 +0300 | [diff] [blame] | 1201 | Overlapped_TransmitFile_doc, |
| 1202 | "TransmitFile(socket, file, offset, offset_high, " |
| 1203 | "count_to_write, count_per_send, flags) " |
| 1204 | "-> Overlapped[None]\n\n" |
| 1205 | "Transmit file data over a connected socket."); |
| 1206 | |
| 1207 | static PyObject * |
| 1208 | Overlapped_TransmitFile(OverlappedObject *self, PyObject *args) |
| 1209 | { |
| 1210 | SOCKET Socket; |
| 1211 | HANDLE File; |
| 1212 | DWORD offset; |
| 1213 | DWORD offset_high; |
| 1214 | DWORD count_to_write; |
| 1215 | DWORD count_per_send; |
| 1216 | DWORD flags; |
| 1217 | BOOL ret; |
| 1218 | DWORD err; |
| 1219 | |
| 1220 | if (!PyArg_ParseTuple(args, |
| 1221 | F_HANDLE F_HANDLE F_DWORD F_DWORD |
| 1222 | F_DWORD F_DWORD F_DWORD, |
| 1223 | &Socket, &File, &offset, &offset_high, |
| 1224 | &count_to_write, &count_per_send, |
| 1225 | &flags)) |
| 1226 | return NULL; |
| 1227 | |
| 1228 | if (self->type != TYPE_NONE) { |
| 1229 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 1230 | return NULL; |
| 1231 | } |
| 1232 | |
| 1233 | self->type = TYPE_TRANSMIT_FILE; |
| 1234 | self->handle = (HANDLE)Socket; |
| 1235 | self->overlapped.Offset = offset; |
| 1236 | self->overlapped.OffsetHigh = offset_high; |
| 1237 | |
| 1238 | Py_BEGIN_ALLOW_THREADS |
| 1239 | ret = Py_TransmitFile(Socket, File, count_to_write, count_per_send, |
| 1240 | &self->overlapped, |
| 1241 | NULL, flags); |
| 1242 | Py_END_ALLOW_THREADS |
| 1243 | |
| 1244 | self->error = err = ret ? ERROR_SUCCESS : WSAGetLastError(); |
| 1245 | switch (err) { |
| 1246 | case ERROR_SUCCESS: |
| 1247 | case ERROR_IO_PENDING: |
| 1248 | Py_RETURN_NONE; |
| 1249 | default: |
| 1250 | self->type = TYPE_NOT_STARTED; |
| 1251 | return SetFromWindowsErr(err); |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | PyDoc_STRVAR( |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1256 | Overlapped_ConnectNamedPipe_doc, |
| 1257 | "ConnectNamedPipe(handle) -> Overlapped[None]\n\n" |
| 1258 | "Start overlapped wait for a client to connect."); |
| 1259 | |
| 1260 | static PyObject * |
| 1261 | Overlapped_ConnectNamedPipe(OverlappedObject *self, PyObject *args) |
| 1262 | { |
| 1263 | HANDLE Pipe; |
| 1264 | BOOL ret; |
| 1265 | DWORD err; |
| 1266 | |
| 1267 | if (!PyArg_ParseTuple(args, F_HANDLE, &Pipe)) |
| 1268 | return NULL; |
| 1269 | |
| 1270 | if (self->type != TYPE_NONE) { |
| 1271 | PyErr_SetString(PyExc_ValueError, "operation already attempted"); |
| 1272 | return NULL; |
| 1273 | } |
| 1274 | |
| 1275 | self->type = TYPE_CONNECT_NAMED_PIPE; |
| 1276 | self->handle = Pipe; |
| 1277 | |
| 1278 | Py_BEGIN_ALLOW_THREADS |
| 1279 | ret = ConnectNamedPipe(Pipe, &self->overlapped); |
| 1280 | Py_END_ALLOW_THREADS |
| 1281 | |
| 1282 | self->error = err = ret ? ERROR_SUCCESS : GetLastError(); |
| 1283 | switch (err) { |
| 1284 | case ERROR_PIPE_CONNECTED: |
| 1285 | mark_as_completed(&self->overlapped); |
Victor Stinner | 2b77c54 | 2015-01-22 23:50:03 +0100 | [diff] [blame] | 1286 | Py_RETURN_TRUE; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1287 | case ERROR_SUCCESS: |
| 1288 | case ERROR_IO_PENDING: |
Victor Stinner | 2b77c54 | 2015-01-22 23:50:03 +0100 | [diff] [blame] | 1289 | Py_RETURN_FALSE; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1290 | default: |
| 1291 | self->type = TYPE_NOT_STARTED; |
| 1292 | return SetFromWindowsErr(err); |
| 1293 | } |
| 1294 | } |
| 1295 | |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1296 | PyDoc_STRVAR( |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1297 | ConnectPipe_doc, |
| 1298 | "ConnectPipe(addr) -> pipe_handle\n\n" |
| 1299 | "Connect to the pipe for asynchronous I/O (overlapped)."); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1300 | |
| 1301 | static PyObject * |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1302 | ConnectPipe(OverlappedObject *self, PyObject *args) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1303 | { |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1304 | PyObject *AddressObj; |
| 1305 | wchar_t *Address; |
| 1306 | HANDLE PipeHandle; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1307 | |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1308 | if (!PyArg_ParseTuple(args, "U", &AddressObj)) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1309 | return NULL; |
| 1310 | |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1311 | Address = PyUnicode_AsWideCharString(AddressObj, NULL); |
| 1312 | if (Address == NULL) |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1313 | return NULL; |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1314 | |
Victor Stinner | 498b1f6 | 2015-01-26 22:43:39 +0100 | [diff] [blame] | 1315 | Py_BEGIN_ALLOW_THREADS |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1316 | PipeHandle = CreateFileW(Address, |
| 1317 | GENERIC_READ | GENERIC_WRITE, |
| 1318 | 0, NULL, OPEN_EXISTING, |
| 1319 | FILE_FLAG_OVERLAPPED, NULL); |
Victor Stinner | 498b1f6 | 2015-01-26 22:43:39 +0100 | [diff] [blame] | 1320 | Py_END_ALLOW_THREADS |
| 1321 | |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1322 | PyMem_Free(Address); |
| 1323 | if (PipeHandle == INVALID_HANDLE_VALUE) |
| 1324 | return SetFromWindowsErr(0); |
| 1325 | return Py_BuildValue(F_HANDLE, PipeHandle); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1326 | } |
| 1327 | |
| 1328 | static PyObject* |
| 1329 | Overlapped_getaddress(OverlappedObject *self) |
| 1330 | { |
| 1331 | return PyLong_FromVoidPtr(&self->overlapped); |
| 1332 | } |
| 1333 | |
| 1334 | static PyObject* |
| 1335 | Overlapped_getpending(OverlappedObject *self) |
| 1336 | { |
| 1337 | return PyBool_FromLong(!HasOverlappedIoCompleted(&self->overlapped) && |
| 1338 | self->type != TYPE_NOT_STARTED); |
| 1339 | } |
| 1340 | |
| 1341 | static PyMethodDef Overlapped_methods[] = { |
| 1342 | {"getresult", (PyCFunction) Overlapped_getresult, |
| 1343 | METH_VARARGS, Overlapped_getresult_doc}, |
| 1344 | {"cancel", (PyCFunction) Overlapped_cancel, |
| 1345 | METH_NOARGS, Overlapped_cancel_doc}, |
| 1346 | {"ReadFile", (PyCFunction) Overlapped_ReadFile, |
| 1347 | METH_VARARGS, Overlapped_ReadFile_doc}, |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 1348 | {"ReadFileInto", (PyCFunction) Overlapped_ReadFileInto, |
| 1349 | METH_VARARGS, Overlapped_ReadFileInto_doc}, |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1350 | {"WSARecv", (PyCFunction) Overlapped_WSARecv, |
| 1351 | METH_VARARGS, Overlapped_WSARecv_doc}, |
Antoine Pitrou | 525f40d | 2017-10-19 21:46:40 +0200 | [diff] [blame] | 1352 | {"WSARecvInto", (PyCFunction) Overlapped_WSARecvInto, |
| 1353 | METH_VARARGS, Overlapped_WSARecvInto_doc}, |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1354 | {"WriteFile", (PyCFunction) Overlapped_WriteFile, |
| 1355 | METH_VARARGS, Overlapped_WriteFile_doc}, |
| 1356 | {"WSASend", (PyCFunction) Overlapped_WSASend, |
| 1357 | METH_VARARGS, Overlapped_WSASend_doc}, |
| 1358 | {"AcceptEx", (PyCFunction) Overlapped_AcceptEx, |
| 1359 | METH_VARARGS, Overlapped_AcceptEx_doc}, |
| 1360 | {"ConnectEx", (PyCFunction) Overlapped_ConnectEx, |
| 1361 | METH_VARARGS, Overlapped_ConnectEx_doc}, |
| 1362 | {"DisconnectEx", (PyCFunction) Overlapped_DisconnectEx, |
| 1363 | METH_VARARGS, Overlapped_DisconnectEx_doc}, |
Andrew Svetlov | a19fb3c | 2018-02-25 19:32:14 +0300 | [diff] [blame] | 1364 | {"TransmitFile", (PyCFunction) Overlapped_TransmitFile, |
| 1365 | METH_VARARGS, Overlapped_TransmitFile_doc}, |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1366 | {"ConnectNamedPipe", (PyCFunction) Overlapped_ConnectNamedPipe, |
| 1367 | METH_VARARGS, Overlapped_ConnectNamedPipe_doc}, |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1368 | {NULL} |
| 1369 | }; |
| 1370 | |
| 1371 | static PyMemberDef Overlapped_members[] = { |
| 1372 | {"error", T_ULONG, |
| 1373 | offsetof(OverlappedObject, error), |
| 1374 | READONLY, "Error from last operation"}, |
| 1375 | {"event", T_HANDLE, |
| 1376 | offsetof(OverlappedObject, overlapped) + offsetof(OVERLAPPED, hEvent), |
| 1377 | READONLY, "Overlapped event handle"}, |
| 1378 | {NULL} |
| 1379 | }; |
| 1380 | |
| 1381 | static PyGetSetDef Overlapped_getsets[] = { |
| 1382 | {"address", (getter)Overlapped_getaddress, NULL, |
| 1383 | "Address of overlapped structure"}, |
| 1384 | {"pending", (getter)Overlapped_getpending, NULL, |
| 1385 | "Whether the operation is pending"}, |
| 1386 | {NULL}, |
| 1387 | }; |
| 1388 | |
| 1389 | PyTypeObject OverlappedType = { |
| 1390 | PyVarObject_HEAD_INIT(NULL, 0) |
| 1391 | /* tp_name */ "_overlapped.Overlapped", |
| 1392 | /* tp_basicsize */ sizeof(OverlappedObject), |
| 1393 | /* tp_itemsize */ 0, |
| 1394 | /* tp_dealloc */ (destructor) Overlapped_dealloc, |
| 1395 | /* tp_print */ 0, |
| 1396 | /* tp_getattr */ 0, |
| 1397 | /* tp_setattr */ 0, |
| 1398 | /* tp_reserved */ 0, |
| 1399 | /* tp_repr */ 0, |
| 1400 | /* tp_as_number */ 0, |
| 1401 | /* tp_as_sequence */ 0, |
| 1402 | /* tp_as_mapping */ 0, |
| 1403 | /* tp_hash */ 0, |
| 1404 | /* tp_call */ 0, |
| 1405 | /* tp_str */ 0, |
| 1406 | /* tp_getattro */ 0, |
| 1407 | /* tp_setattro */ 0, |
| 1408 | /* tp_as_buffer */ 0, |
| 1409 | /* tp_flags */ Py_TPFLAGS_DEFAULT, |
| 1410 | /* tp_doc */ "OVERLAPPED structure wrapper", |
| 1411 | /* tp_traverse */ 0, |
| 1412 | /* tp_clear */ 0, |
| 1413 | /* tp_richcompare */ 0, |
| 1414 | /* tp_weaklistoffset */ 0, |
| 1415 | /* tp_iter */ 0, |
| 1416 | /* tp_iternext */ 0, |
| 1417 | /* tp_methods */ Overlapped_methods, |
| 1418 | /* tp_members */ Overlapped_members, |
| 1419 | /* tp_getset */ Overlapped_getsets, |
| 1420 | /* tp_base */ 0, |
| 1421 | /* tp_dict */ 0, |
| 1422 | /* tp_descr_get */ 0, |
| 1423 | /* tp_descr_set */ 0, |
| 1424 | /* tp_dictoffset */ 0, |
| 1425 | /* tp_init */ 0, |
| 1426 | /* tp_alloc */ 0, |
| 1427 | /* tp_new */ Overlapped_new, |
| 1428 | }; |
| 1429 | |
| 1430 | static PyMethodDef overlapped_functions[] = { |
| 1431 | {"CreateIoCompletionPort", overlapped_CreateIoCompletionPort, |
| 1432 | METH_VARARGS, CreateIoCompletionPort_doc}, |
| 1433 | {"GetQueuedCompletionStatus", overlapped_GetQueuedCompletionStatus, |
| 1434 | METH_VARARGS, GetQueuedCompletionStatus_doc}, |
| 1435 | {"PostQueuedCompletionStatus", overlapped_PostQueuedCompletionStatus, |
| 1436 | METH_VARARGS, PostQueuedCompletionStatus_doc}, |
| 1437 | {"FormatMessage", overlapped_FormatMessage, |
| 1438 | METH_VARARGS, FormatMessage_doc}, |
| 1439 | {"BindLocal", overlapped_BindLocal, |
| 1440 | METH_VARARGS, BindLocal_doc}, |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 1441 | {"RegisterWaitWithQueue", overlapped_RegisterWaitWithQueue, |
| 1442 | METH_VARARGS, RegisterWaitWithQueue_doc}, |
| 1443 | {"UnregisterWait", overlapped_UnregisterWait, |
| 1444 | METH_VARARGS, UnregisterWait_doc}, |
Victor Stinner | d0a28de | 2015-01-21 23:39:51 +0100 | [diff] [blame] | 1445 | {"UnregisterWaitEx", overlapped_UnregisterWaitEx, |
| 1446 | METH_VARARGS, UnregisterWaitEx_doc}, |
Guido van Rossum | 90fb914 | 2013-10-30 14:44:05 -0700 | [diff] [blame] | 1447 | {"CreateEvent", overlapped_CreateEvent, |
| 1448 | METH_VARARGS, CreateEvent_doc}, |
| 1449 | {"SetEvent", overlapped_SetEvent, |
| 1450 | METH_VARARGS, SetEvent_doc}, |
| 1451 | {"ResetEvent", overlapped_ResetEvent, |
| 1452 | METH_VARARGS, ResetEvent_doc}, |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1453 | {"ConnectPipe", |
| 1454 | (PyCFunction) ConnectPipe, |
| 1455 | METH_VARARGS, ConnectPipe_doc}, |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1456 | {NULL} |
| 1457 | }; |
| 1458 | |
| 1459 | static struct PyModuleDef overlapped_module = { |
| 1460 | PyModuleDef_HEAD_INIT, |
| 1461 | "_overlapped", |
| 1462 | NULL, |
| 1463 | -1, |
| 1464 | overlapped_functions, |
| 1465 | NULL, |
| 1466 | NULL, |
| 1467 | NULL, |
| 1468 | NULL |
| 1469 | }; |
| 1470 | |
| 1471 | #define WINAPI_CONSTANT(fmt, con) \ |
| 1472 | PyDict_SetItemString(d, #con, Py_BuildValue(fmt, con)) |
| 1473 | |
| 1474 | PyMODINIT_FUNC |
| 1475 | PyInit__overlapped(void) |
| 1476 | { |
| 1477 | PyObject *m, *d; |
| 1478 | |
| 1479 | /* Ensure WSAStartup() called before initializing function pointers */ |
| 1480 | m = PyImport_ImportModule("_socket"); |
| 1481 | if (!m) |
| 1482 | return NULL; |
| 1483 | Py_DECREF(m); |
| 1484 | |
| 1485 | if (initialize_function_pointers() < 0) |
| 1486 | return NULL; |
| 1487 | |
| 1488 | if (PyType_Ready(&OverlappedType) < 0) |
| 1489 | return NULL; |
| 1490 | |
| 1491 | m = PyModule_Create(&overlapped_module); |
| 1492 | if (PyModule_AddObject(m, "Overlapped", (PyObject *)&OverlappedType) < 0) |
| 1493 | return NULL; |
| 1494 | |
| 1495 | d = PyModule_GetDict(m); |
| 1496 | |
| 1497 | WINAPI_CONSTANT(F_DWORD, ERROR_IO_PENDING); |
| 1498 | WINAPI_CONSTANT(F_DWORD, ERROR_NETNAME_DELETED); |
Andrew Svetlov | 7c68407 | 2018-01-27 21:22:47 +0200 | [diff] [blame] | 1499 | WINAPI_CONSTANT(F_DWORD, ERROR_OPERATION_ABORTED); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1500 | WINAPI_CONSTANT(F_DWORD, ERROR_SEM_TIMEOUT); |
Victor Stinner | 7ffa2c5 | 2015-01-22 22:55:08 +0100 | [diff] [blame] | 1501 | WINAPI_CONSTANT(F_DWORD, ERROR_PIPE_BUSY); |
Guido van Rossum | 27b7c7e | 2013-10-17 13:40:50 -0700 | [diff] [blame] | 1502 | WINAPI_CONSTANT(F_DWORD, INFINITE); |
| 1503 | WINAPI_CONSTANT(F_HANDLE, INVALID_HANDLE_VALUE); |
| 1504 | WINAPI_CONSTANT(F_HANDLE, NULL); |
| 1505 | WINAPI_CONSTANT(F_DWORD, SO_UPDATE_ACCEPT_CONTEXT); |
| 1506 | WINAPI_CONSTANT(F_DWORD, SO_UPDATE_CONNECT_CONTEXT); |
| 1507 | WINAPI_CONSTANT(F_DWORD, TF_REUSE_SOCKET); |
| 1508 | |
| 1509 | return m; |
| 1510 | } |