| 1 | /* ------------------------------------------------------------------------- |
| 2 | * Project: GSocket (Generic Socket) for WX |
| 3 | * Name: gsocket.c |
| 4 | * Purpose: GSocket main MSW file |
| 5 | * CVSID: $Id$ |
| 6 | * ------------------------------------------------------------------------- |
| 7 | */ |
| 8 | |
| 9 | #ifdef __WXMSW__ |
| 10 | |
| 11 | #include "wx/setup.h" |
| 12 | #include "wx/msw/gsockmsw.h" |
| 13 | #include "wx/gsocket.h" |
| 14 | |
| 15 | #define INSTANCE wxhInstance |
| 16 | |
| 17 | #else |
| 18 | |
| 19 | #include "gsockmsw.h" |
| 20 | #include "gsocket.h" |
| 21 | |
| 22 | /* If not using wxWindows, a global var called hInst must |
| 23 | * be available and it must containt the app's instance |
| 24 | * handle. |
| 25 | */ |
| 26 | #define INSTANCE hInst |
| 27 | |
| 28 | #endif /* __WXMSW__ */ |
| 29 | |
| 30 | |
| 31 | #if !defined(__WXMSW__) || (defined(__WXMSW__) && wxUSE_SOCKETS) |
| 32 | |
| 33 | #include <assert.h> |
| 34 | #include <string.h> |
| 35 | #include <stdio.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <stddef.h> |
| 38 | #include <ctype.h> |
| 39 | #include <winsock.h> |
| 40 | |
| 41 | #define SOCKLEN_T int |
| 42 | #define CLASSNAME "_GSocket_Internal_Window_Class" |
| 43 | #define WINDOWNAME "_GSocket_Internal_Window_Name" |
| 44 | |
| 45 | /* Maximum number of different GSocket objects at a given time. |
| 46 | * This value can be modified at will, but it CANNOT be greater |
| 47 | * than (0x7FFF - WM_USER + 1) |
| 48 | */ |
| 49 | #define MAXSOCKETS 1024 |
| 50 | |
| 51 | #if (MAXSOCKETS > (0x7FFF - WM_USER + 1)) |
| 52 | #error "MAXSOCKETS is too big!" |
| 53 | #endif |
| 54 | |
| 55 | |
| 56 | /* Global variables */ |
| 57 | |
| 58 | extern HINSTANCE INSTANCE; |
| 59 | static HWND hWin; |
| 60 | static CRITICAL_SECTION critical; |
| 61 | static GSocket* socketList[MAXSOCKETS]; |
| 62 | static int firstAvailable; |
| 63 | |
| 64 | /* Global initializers */ |
| 65 | |
| 66 | bool GSocket_Init() |
| 67 | { |
| 68 | WSADATA wsaData; |
| 69 | WNDCLASS winClass; |
| 70 | int i; |
| 71 | |
| 72 | /* Create internal window for event notifications */ |
| 73 | winClass.style = 0; |
| 74 | winClass.lpfnWndProc = _GSocket_Internal_WinProc; |
| 75 | winClass.cbClsExtra = 0; |
| 76 | winClass.cbWndExtra = 0; |
| 77 | winClass.hInstance = INSTANCE; |
| 78 | winClass.hIcon = (HICON) NULL; |
| 79 | winClass.hCursor = (HCURSOR) NULL; |
| 80 | winClass.hbrBackground = (HBRUSH) NULL; |
| 81 | winClass.lpszMenuName = (LPCTSTR) NULL; |
| 82 | winClass.lpszClassName = CLASSNAME; |
| 83 | |
| 84 | RegisterClass(&winClass); |
| 85 | hWin = CreateWindow(CLASSNAME, |
| 86 | WINDOWNAME, |
| 87 | 0, 0, 0, 0, 0, |
| 88 | (HWND) NULL, (HMENU) NULL, INSTANCE, (LPVOID) NULL); |
| 89 | |
| 90 | if (!hWin) return FALSE; |
| 91 | |
| 92 | /* Initialize socket list */ |
| 93 | InitializeCriticalSection(&critical); |
| 94 | |
| 95 | for (i = 0; i < MAXSOCKETS; i++) |
| 96 | { |
| 97 | socketList[i] = NULL; |
| 98 | } |
| 99 | firstAvailable = 0; |
| 100 | |
| 101 | /* Initialize WinSocket */ |
| 102 | return (WSAStartup((1 << 8) | 1, &wsaData) == 0); |
| 103 | } |
| 104 | |
| 105 | void GSocket_Cleanup() |
| 106 | { |
| 107 | /* Destroy internal window */ |
| 108 | DestroyWindow(hWin); |
| 109 | UnregisterClass(CLASSNAME, INSTANCE); |
| 110 | |
| 111 | /* Delete critical section */ |
| 112 | DeleteCriticalSection(&critical); |
| 113 | |
| 114 | /* Cleanup WinSocket */ |
| 115 | WSACleanup(); |
| 116 | } |
| 117 | |
| 118 | /* Constructors / Destructors */ |
| 119 | |
| 120 | GSocket *GSocket_new() |
| 121 | { |
| 122 | int i; |
| 123 | GSocket *socket; |
| 124 | |
| 125 | if ((socket = (GSocket *) malloc(sizeof(GSocket))) == NULL) |
| 126 | return NULL; |
| 127 | |
| 128 | socket->m_fd = INVALID_SOCKET; |
| 129 | for (i = 0; i < GSOCK_MAX_EVENT; i++) |
| 130 | { |
| 131 | socket->m_cbacks[i] = NULL; |
| 132 | } |
| 133 | socket->m_local = NULL; |
| 134 | socket->m_peer = NULL; |
| 135 | socket->m_error = GSOCK_NOERROR; |
| 136 | socket->m_server = FALSE; |
| 137 | socket->m_stream = TRUE; |
| 138 | socket->m_non_blocking = FALSE; |
| 139 | socket->m_timeout.tv_sec = 10 * 60; /* 10 minutes */ |
| 140 | socket->m_timeout.tv_usec = 0; |
| 141 | |
| 142 | /* Allocate a new message number for this socket */ |
| 143 | EnterCriticalSection(&critical); |
| 144 | |
| 145 | i = firstAvailable; |
| 146 | while (socketList[i] != NULL) |
| 147 | { |
| 148 | i = (i + 1) % MAXSOCKETS; |
| 149 | |
| 150 | if (i == firstAvailable) /* abort! */ |
| 151 | { |
| 152 | free(socket); |
| 153 | LeaveCriticalSection(&critical); |
| 154 | return NULL; |
| 155 | } |
| 156 | } |
| 157 | socketList[i] = socket; |
| 158 | firstAvailable = (i + 1) % MAXSOCKETS; |
| 159 | socket->m_msgnumber = (i + WM_USER); |
| 160 | |
| 161 | LeaveCriticalSection(&critical); |
| 162 | |
| 163 | return socket; |
| 164 | } |
| 165 | |
| 166 | void GSocket_destroy(GSocket *socket) |
| 167 | { |
| 168 | assert(socket != NULL); |
| 169 | |
| 170 | /* We don't want more event notifications; so first of all we |
| 171 | * remove the socket from the list (NOTE: we won't get a CLOSE |
| 172 | * event for this socket if it wasn't closed before). |
| 173 | */ |
| 174 | EnterCriticalSection(&critical); |
| 175 | socketList[(socket->m_msgnumber - WM_USER)] = NULL; |
| 176 | LeaveCriticalSection(&critical); |
| 177 | |
| 178 | /* We check that the socket is really shutdowned */ |
| 179 | if (socket->m_fd != INVALID_SOCKET) |
| 180 | GSocket_Shutdown(socket); |
| 181 | |
| 182 | /* We destroy private addresses */ |
| 183 | if (socket->m_local) |
| 184 | GAddress_destroy(socket->m_local); |
| 185 | |
| 186 | if (socket->m_peer) |
| 187 | GAddress_destroy(socket->m_peer); |
| 188 | |
| 189 | /* We destroy socket itself */ |
| 190 | free(socket); |
| 191 | } |
| 192 | |
| 193 | void GSocket_Shutdown(GSocket *socket) |
| 194 | { |
| 195 | int evt; |
| 196 | |
| 197 | assert(socket != NULL); |
| 198 | |
| 199 | /* If socket has been created, we shutdown it */ |
| 200 | if (socket->m_fd != INVALID_SOCKET) |
| 201 | { |
| 202 | shutdown(socket->m_fd, 2); |
| 203 | closesocket(socket->m_fd); |
| 204 | socket->m_fd = INVALID_SOCKET; |
| 205 | } |
| 206 | |
| 207 | /* We disable GUI callbacks */ |
| 208 | for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) |
| 209 | { |
| 210 | socket->m_cbacks[evt] = NULL; |
| 211 | } |
| 212 | |
| 213 | _GSocket_Configure_Callbacks(socket); |
| 214 | } |
| 215 | |
| 216 | /* Address handling */ |
| 217 | |
| 218 | GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address) |
| 219 | { |
| 220 | assert(socket != NULL); |
| 221 | |
| 222 | if (socket->m_fd != INVALID_SOCKET && !socket->m_server) |
| 223 | { |
| 224 | socket->m_error = GSOCK_INVSOCK; |
| 225 | return GSOCK_INVSOCK; |
| 226 | } |
| 227 | |
| 228 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 229 | { |
| 230 | socket->m_error = GSOCK_INVADDR; |
| 231 | return GSOCK_INVADDR; |
| 232 | } |
| 233 | |
| 234 | if (socket->m_local) |
| 235 | GAddress_destroy(socket->m_local); |
| 236 | |
| 237 | socket->m_local = GAddress_copy(address); |
| 238 | |
| 239 | return GSOCK_NOERROR; |
| 240 | } |
| 241 | |
| 242 | GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address) |
| 243 | { |
| 244 | assert(socket != NULL); |
| 245 | |
| 246 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 247 | { |
| 248 | socket->m_error = GSOCK_INVADDR; |
| 249 | return GSOCK_INVADDR; |
| 250 | } |
| 251 | |
| 252 | if (socket->m_peer) |
| 253 | GAddress_destroy(socket->m_peer); |
| 254 | |
| 255 | socket->m_peer = GAddress_copy(address); |
| 256 | |
| 257 | return GSOCK_NOERROR; |
| 258 | } |
| 259 | |
| 260 | GAddress *GSocket_GetLocal(GSocket *socket) |
| 261 | { |
| 262 | GAddress *address; |
| 263 | struct sockaddr addr; |
| 264 | SOCKLEN_T size; |
| 265 | |
| 266 | assert(socket != NULL); |
| 267 | |
| 268 | if (socket->m_local) |
| 269 | return GAddress_copy(socket->m_local); |
| 270 | |
| 271 | if (socket->m_fd == INVALID_SOCKET) |
| 272 | { |
| 273 | socket->m_error = GSOCK_INVSOCK; |
| 274 | return NULL; |
| 275 | } |
| 276 | |
| 277 | size = sizeof(addr); |
| 278 | |
| 279 | if (getsockname(socket->m_fd, &addr, &size) == SOCKET_ERROR) |
| 280 | { |
| 281 | socket->m_error = GSOCK_IOERR; |
| 282 | return NULL; |
| 283 | } |
| 284 | |
| 285 | address = GAddress_new(); |
| 286 | if (address == NULL) |
| 287 | { |
| 288 | socket->m_error = GSOCK_MEMERR; |
| 289 | return NULL; |
| 290 | } |
| 291 | if (_GAddress_translate_from(address, &addr, size) != GSOCK_NOERROR) |
| 292 | { |
| 293 | socket->m_error = GSOCK_MEMERR; |
| 294 | GAddress_destroy(address); |
| 295 | return NULL; |
| 296 | } |
| 297 | |
| 298 | return address; |
| 299 | } |
| 300 | |
| 301 | GAddress *GSocket_GetPeer(GSocket *socket) |
| 302 | { |
| 303 | assert(socket != NULL); |
| 304 | |
| 305 | if (socket->m_peer) |
| 306 | return GAddress_copy(socket->m_peer); |
| 307 | |
| 308 | return NULL; |
| 309 | } |
| 310 | |
| 311 | /* Server specific parts */ |
| 312 | |
| 313 | /* GSocket_SetServer: |
| 314 | * Sets up the socket as a server. It uses the "Local" field of GSocket. |
| 315 | * "Local" must be set by GSocket_SetLocal() before GSocket_SetServer() |
| 316 | * is called. Possible error codes are: GSOCK_INVSOCK if socket has not |
| 317 | * been initialized, GSOCK_INVADDR if the local address has not been |
| 318 | * defined and GSOCK_IOERR for other internal errors. |
| 319 | */ |
| 320 | GSocketError GSocket_SetServer(GSocket *sck) |
| 321 | { |
| 322 | u_long arg = 1; |
| 323 | |
| 324 | assert(sck != NULL); |
| 325 | |
| 326 | if (sck->m_fd != INVALID_SOCKET) |
| 327 | { |
| 328 | sck->m_error = GSOCK_INVSOCK; |
| 329 | return GSOCK_INVSOCK; |
| 330 | } |
| 331 | |
| 332 | if (!sck->m_local) |
| 333 | { |
| 334 | sck->m_error = GSOCK_INVADDR; |
| 335 | return GSOCK_INVADDR; |
| 336 | } |
| 337 | |
| 338 | /* Initialize all fields */ |
| 339 | sck->m_server = TRUE; |
| 340 | sck->m_stream = TRUE; |
| 341 | sck->m_oriented = TRUE; |
| 342 | |
| 343 | /* Create the socket */ |
| 344 | sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0); |
| 345 | ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 346 | |
| 347 | if (sck->m_fd == INVALID_SOCKET) |
| 348 | { |
| 349 | sck->m_error = GSOCK_IOERR; |
| 350 | return GSOCK_IOERR; |
| 351 | } |
| 352 | |
| 353 | /* Bind the socket to the LOCAL address */ |
| 354 | if (bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) |
| 355 | { |
| 356 | closesocket(sck->m_fd); |
| 357 | sck->m_fd = INVALID_SOCKET; |
| 358 | sck->m_error = GSOCK_IOERR; |
| 359 | return GSOCK_IOERR; |
| 360 | } |
| 361 | |
| 362 | /* Enable listening up to 5 connections */ |
| 363 | if (listen(sck->m_fd, 5) != 0) |
| 364 | { |
| 365 | closesocket(sck->m_fd); |
| 366 | sck->m_fd = INVALID_SOCKET; |
| 367 | sck->m_error = GSOCK_IOERR; |
| 368 | return GSOCK_IOERR; |
| 369 | } |
| 370 | |
| 371 | return GSOCK_NOERROR; |
| 372 | } |
| 373 | |
| 374 | /* GSocket_WaitConnection: |
| 375 | * Waits for an incoming client connection. |
| 376 | */ |
| 377 | GSocket *GSocket_WaitConnection(GSocket *sck) |
| 378 | { |
| 379 | GSocket *connection; |
| 380 | u_long arg = 1; |
| 381 | |
| 382 | assert(sck != NULL); |
| 383 | |
| 384 | /* If the socket has already been created, we exit immediately */ |
| 385 | if (sck->m_fd == INVALID_SOCKET || !sck->m_server) |
| 386 | { |
| 387 | sck->m_error = GSOCK_INVSOCK; |
| 388 | return NULL; |
| 389 | } |
| 390 | |
| 391 | /* Create a GSocket object for the new connection */ |
| 392 | connection = GSocket_new(); |
| 393 | |
| 394 | if (!connection) |
| 395 | { |
| 396 | sck->m_error = GSOCK_MEMERR; |
| 397 | return NULL; |
| 398 | } |
| 399 | |
| 400 | /* Wait for a connection (with timeout) */ |
| 401 | if (_GSocket_Input_Timeout(sck) == GSOCK_TIMEDOUT) |
| 402 | { |
| 403 | GSocket_destroy(connection); |
| 404 | /* sck->m_error set by _GSocket_Input_Timeout */ |
| 405 | return NULL; |
| 406 | } |
| 407 | |
| 408 | connection->m_fd = accept(sck->m_fd, NULL, NULL); |
| 409 | |
| 410 | if (connection->m_fd == INVALID_SOCKET) |
| 411 | { |
| 412 | if (WSAGetLastError() == WSAEWOULDBLOCK) |
| 413 | sck->m_error = GSOCK_WOULDBLOCK; |
| 414 | else |
| 415 | sck->m_error = GSOCK_IOERR; |
| 416 | |
| 417 | GSocket_destroy(connection); |
| 418 | return NULL; |
| 419 | } |
| 420 | |
| 421 | /* Initialize all fields */ |
| 422 | connection->m_server = FALSE; |
| 423 | connection->m_stream = TRUE; |
| 424 | connection->m_oriented = TRUE; |
| 425 | |
| 426 | ioctlsocket(connection->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 427 | |
| 428 | return connection; |
| 429 | } |
| 430 | |
| 431 | /* Non oriented connections */ |
| 432 | |
| 433 | GSocketError GSocket_SetNonOriented(GSocket *sck) |
| 434 | { |
| 435 | u_long arg = 1; |
| 436 | |
| 437 | assert(sck != NULL); |
| 438 | |
| 439 | if (sck->m_fd != INVALID_SOCKET) |
| 440 | { |
| 441 | sck->m_error = GSOCK_INVSOCK; |
| 442 | return GSOCK_INVSOCK; |
| 443 | } |
| 444 | |
| 445 | if (!sck->m_local) |
| 446 | { |
| 447 | sck->m_error = GSOCK_INVADDR; |
| 448 | return GSOCK_INVADDR; |
| 449 | } |
| 450 | |
| 451 | /* Initialize all fields */ |
| 452 | sck->m_stream = FALSE; |
| 453 | sck->m_server = FALSE; |
| 454 | sck->m_oriented = FALSE; |
| 455 | |
| 456 | /* Create the socket */ |
| 457 | sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0); |
| 458 | ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 459 | |
| 460 | if (sck->m_fd == INVALID_SOCKET) |
| 461 | { |
| 462 | sck->m_error = GSOCK_IOERR; |
| 463 | return GSOCK_IOERR; |
| 464 | } |
| 465 | |
| 466 | /* Bind it to the LOCAL address */ |
| 467 | if (bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) |
| 468 | { |
| 469 | closesocket(sck->m_fd); |
| 470 | sck->m_fd = INVALID_SOCKET; |
| 471 | sck->m_error = GSOCK_IOERR; |
| 472 | return GSOCK_IOERR; |
| 473 | } |
| 474 | |
| 475 | return GSOCK_NOERROR; |
| 476 | } |
| 477 | |
| 478 | GSocketError GSocket_SetBroadcast(GSocket *sck) |
| 479 | { |
| 480 | BOOL b; |
| 481 | |
| 482 | assert(sck != NULL); |
| 483 | |
| 484 | if (GSocket_SetNonOriented(sck) != GSOCK_NOERROR) |
| 485 | return sck->m_error; |
| 486 | |
| 487 | b = TRUE; |
| 488 | setsockopt(sck->m_fd, SOL_SOCKET, SO_BROADCAST, (const char FAR *) &b, sizeof(b)); |
| 489 | |
| 490 | return GSOCK_NOERROR; |
| 491 | } |
| 492 | |
| 493 | /* Client specific parts */ |
| 494 | |
| 495 | /* GSocket_Connect: |
| 496 | * Establishes a client connection to a server using the "Peer" |
| 497 | * field of GSocket. "Peer" must be set by GSocket_SetPeer() before |
| 498 | * GSocket_Connect() is called. Possible error codes are GSOCK_INVSOCK, |
| 499 | * GSOCK_INVADDR, GSOCK_TIMEDOUT, GSOCK_WOULDBLOCK and GSOCK_IOERR. |
| 500 | */ |
| 501 | GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) |
| 502 | { |
| 503 | u_long arg = 1; |
| 504 | int type, ret, err; |
| 505 | |
| 506 | assert(sck != NULL); |
| 507 | |
| 508 | if (sck->m_fd != INVALID_SOCKET) |
| 509 | { |
| 510 | sck->m_error = GSOCK_INVSOCK; |
| 511 | return GSOCK_INVSOCK; |
| 512 | } |
| 513 | |
| 514 | if (!sck->m_peer) |
| 515 | { |
| 516 | sck->m_error = GSOCK_INVADDR; |
| 517 | return GSOCK_INVADDR; |
| 518 | } |
| 519 | |
| 520 | /* Test whether we want the socket to be a stream (e.g. TCP) */ |
| 521 | sck->m_stream = (stream == GSOCK_STREAMED); |
| 522 | sck->m_oriented = TRUE; |
| 523 | sck->m_server = FALSE; |
| 524 | |
| 525 | if (sck->m_stream) |
| 526 | type = SOCK_STREAM; |
| 527 | else |
| 528 | type = SOCK_DGRAM; |
| 529 | |
| 530 | /* Create the socket */ |
| 531 | sck->m_fd = socket(sck->m_peer->m_realfamily, type, 0); |
| 532 | ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 533 | |
| 534 | if (sck->m_fd == INVALID_SOCKET) |
| 535 | { |
| 536 | sck->m_error = GSOCK_IOERR; |
| 537 | return GSOCK_IOERR; |
| 538 | } |
| 539 | |
| 540 | /* Connect it to the PEER address, with a timeout (see below) */ |
| 541 | ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len); |
| 542 | |
| 543 | if (ret == SOCKET_ERROR) |
| 544 | { |
| 545 | err = WSAGetLastError(); |
| 546 | |
| 547 | /* If connect failed with EWOULDBLOCK and the GSocket object |
| 548 | * is in blocking mode, we select() for the specified timeout |
| 549 | * checking for writability to see if the connection request |
| 550 | * completes. |
| 551 | */ |
| 552 | if ((err == WSAEWOULDBLOCK) && (!sck->m_non_blocking)) |
| 553 | { |
| 554 | if (_GSocket_Output_Timeout(sck) == GSOCK_TIMEDOUT) |
| 555 | { |
| 556 | closesocket(sck->m_fd); |
| 557 | sck->m_fd = INVALID_SOCKET; |
| 558 | /* sck->m_error is set in _GSocket_Output_Timeout */ |
| 559 | return GSOCK_TIMEDOUT; |
| 560 | } |
| 561 | else |
| 562 | return GSOCK_NOERROR; |
| 563 | } |
| 564 | |
| 565 | /* If connect failed with EWOULDBLOCK and the GSocket object |
| 566 | * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK |
| 567 | * (and return GSOCK_WOULDBLOCK) but we don't close the socket; |
| 568 | * this way if the connection completes, a GSOCK_CONNECTION |
| 569 | * event will be generated, if enabled. |
| 570 | */ |
| 571 | if ((err == WSAEWOULDBLOCK) && (sck->m_non_blocking)) |
| 572 | { |
| 573 | sck->m_error = GSOCK_WOULDBLOCK; |
| 574 | return GSOCK_WOULDBLOCK; |
| 575 | } |
| 576 | |
| 577 | /* If connect failed with an error other than EWOULDBLOCK, |
| 578 | * then the call to GSocket_Connect has failed. |
| 579 | */ |
| 580 | closesocket(sck->m_fd); |
| 581 | sck->m_fd = INVALID_SOCKET; |
| 582 | sck->m_error = GSOCK_IOERR; |
| 583 | return GSOCK_IOERR; |
| 584 | } |
| 585 | |
| 586 | return GSOCK_NOERROR; |
| 587 | } |
| 588 | |
| 589 | /* Generic IO */ |
| 590 | |
| 591 | /* Like recv(), send(), ... */ |
| 592 | int GSocket_Read(GSocket *socket, char *buffer, int size) |
| 593 | { |
| 594 | assert(socket != NULL); |
| 595 | |
| 596 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 597 | { |
| 598 | socket->m_error = GSOCK_INVSOCK; |
| 599 | return -1; |
| 600 | } |
| 601 | |
| 602 | if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT) |
| 603 | return -1; |
| 604 | |
| 605 | if (socket->m_stream) |
| 606 | return _GSocket_Recv_Stream(socket, buffer, size); |
| 607 | else |
| 608 | return _GSocket_Recv_Dgram(socket, buffer, size); |
| 609 | } |
| 610 | |
| 611 | int GSocket_Write(GSocket *socket, const char *buffer, int size) |
| 612 | { |
| 613 | assert(socket != NULL); |
| 614 | |
| 615 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 616 | { |
| 617 | socket->m_error = GSOCK_INVSOCK; |
| 618 | return -1; |
| 619 | } |
| 620 | |
| 621 | if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT) |
| 622 | return -1; |
| 623 | |
| 624 | if (socket->m_stream) |
| 625 | return _GSocket_Send_Stream(socket, buffer, size); |
| 626 | else |
| 627 | return _GSocket_Send_Dgram(socket, buffer, size); |
| 628 | } |
| 629 | |
| 630 | bool GSocket_DataAvailable(GSocket *socket) |
| 631 | { |
| 632 | fd_set read_set; |
| 633 | struct timeval tv; |
| 634 | |
| 635 | assert(socket != NULL); |
| 636 | |
| 637 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 638 | { |
| 639 | socket->m_error = GSOCK_INVSOCK; |
| 640 | return FALSE; |
| 641 | } |
| 642 | |
| 643 | FD_ZERO(&read_set); |
| 644 | FD_SET(socket->m_fd, &read_set); |
| 645 | |
| 646 | tv.tv_sec = 0; |
| 647 | tv.tv_usec = 0; |
| 648 | |
| 649 | select(socket->m_fd + 1, &read_set, NULL, NULL, &tv); |
| 650 | |
| 651 | return FD_ISSET(socket->m_fd, &read_set); |
| 652 | } |
| 653 | |
| 654 | /* Flags */ |
| 655 | |
| 656 | /* GSocket_SetNonBlocking: |
| 657 | * Sets the socket in non-blocking mode. This is useful if |
| 658 | * we don't want to wait. |
| 659 | */ |
| 660 | void GSocket_SetNonBlocking(GSocket *socket, bool non_block) |
| 661 | { |
| 662 | assert(socket != NULL); |
| 663 | |
| 664 | socket->m_non_blocking = non_block; |
| 665 | } |
| 666 | |
| 667 | /* GSocket_SetTimeout: |
| 668 | */ |
| 669 | void GSocket_SetTimeout(GSocket *socket, unsigned long millisecs) |
| 670 | { |
| 671 | assert(socket != NULL); |
| 672 | |
| 673 | socket->m_timeout.tv_sec = (millisecs / 1000); |
| 674 | socket->m_timeout.tv_usec = (millisecs % 1000) * 1000; |
| 675 | } |
| 676 | |
| 677 | /* GSocket_GetError: |
| 678 | * Returns the last error occured for this socket. |
| 679 | */ |
| 680 | GSocketError GSocket_GetError(GSocket *socket) |
| 681 | { |
| 682 | assert(socket != NULL); |
| 683 | |
| 684 | return socket->m_error; |
| 685 | } |
| 686 | |
| 687 | /* Callbacks */ |
| 688 | |
| 689 | /* Only one callback is possible for each event (INPUT, OUTPUT, CONNECTION |
| 690 | * and LOST). The callbacks are called in the following situations: |
| 691 | * |
| 692 | * INPUT: There is at least one byte in the input buffer |
| 693 | * OUTPUT: The system is sure that the next write call will not block |
| 694 | * CONNECTION: Two cases are possible: |
| 695 | * Client socket -> the connection is established |
| 696 | * Server socket -> a client requests a connection |
| 697 | * LOST: The connection is lost |
| 698 | * |
| 699 | * An event is generated only once and its state is reseted when the |
| 700 | * relative IO call is requested. |
| 701 | * For example: INPUT -> GSocket_Read() |
| 702 | * CONNECTION -> GSocket_Accept() |
| 703 | */ |
| 704 | |
| 705 | /* GSocket_SetCallback: |
| 706 | * Enables the callbacks specified by 'event'. Note that 'event' |
| 707 | * may be a combination of flags OR'ed toghether, so the same |
| 708 | * callback function can be made to accept different events. |
| 709 | * The callback function must have the following prototype: |
| 710 | * |
| 711 | * void function(GSocket *socket, GSocketEvent event, char *cdata) |
| 712 | */ |
| 713 | void GSocket_SetCallback(GSocket *socket, GSocketEventFlags event, |
| 714 | GSocketCallback callback, char *cdata) |
| 715 | { |
| 716 | int count; |
| 717 | |
| 718 | assert (socket != NULL); |
| 719 | |
| 720 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 721 | { |
| 722 | /* We test each flag and enable the corresponding events */ |
| 723 | if ((event & (1 << count)) != 0) |
| 724 | { |
| 725 | socket->m_cbacks[count] = callback; |
| 726 | socket->m_data[count] = cdata; |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | _GSocket_Configure_Callbacks(socket); |
| 731 | } |
| 732 | |
| 733 | /* GSocket_UnsetCallback: |
| 734 | * Disables all callbacks specified by 'event', which may be a |
| 735 | * combination of flags OR'ed toghether. |
| 736 | */ |
| 737 | void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags event) |
| 738 | { |
| 739 | int count = 0; |
| 740 | |
| 741 | assert(socket != NULL); |
| 742 | |
| 743 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 744 | { |
| 745 | /* We test each flag and disable the corresponding events */ |
| 746 | if ((event & (1 << count)) != 0) |
| 747 | { |
| 748 | socket->m_cbacks[count] = NULL; |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | _GSocket_Configure_Callbacks(socket); |
| 753 | } |
| 754 | |
| 755 | |
| 756 | /* Internals */ |
| 757 | |
| 758 | void _GSocket_Configure_Callbacks(GSocket *socket) |
| 759 | { |
| 760 | long mask = 0; |
| 761 | int count; |
| 762 | |
| 763 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 764 | { |
| 765 | if (socket->m_cbacks[count] != NULL) |
| 766 | { |
| 767 | switch (count) |
| 768 | { |
| 769 | case GSOCK_INPUT: mask |= FD_READ; break; |
| 770 | case GSOCK_OUTPUT: mask |= FD_WRITE; break; |
| 771 | case GSOCK_CONNECTION: mask |= (FD_ACCEPT | FD_CONNECT); break; |
| 772 | case GSOCK_LOST: mask |= FD_CLOSE; break; |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, mask); |
| 778 | } |
| 779 | |
| 780 | LRESULT CALLBACK _GSocket_Internal_WinProc(HWND hWnd, |
| 781 | UINT uMsg, |
| 782 | WPARAM wParam, |
| 783 | LPARAM lParam) |
| 784 | { |
| 785 | GSocket *socket; |
| 786 | GSocketEvent event; |
| 787 | GSocketCallback cback; |
| 788 | |
| 789 | if (uMsg >= WM_USER && uMsg <= (WM_USER + MAXSOCKETS - 1)) |
| 790 | { |
| 791 | EnterCriticalSection(&critical); |
| 792 | socket = socketList[(uMsg - WM_USER)]; |
| 793 | event = -1; |
| 794 | cback = NULL; |
| 795 | |
| 796 | /* Check that the socket still exists (it has not been |
| 797 | * destroyed) and for safety, check that the m_fd field |
| 798 | * is what we expect it to be. |
| 799 | */ |
| 800 | if ((socket != NULL) && (socket->m_fd == wParam)) |
| 801 | { |
| 802 | switch WSAGETSELECTEVENT(lParam) |
| 803 | { |
| 804 | case FD_READ: event = GSOCK_INPUT; break; |
| 805 | case FD_WRITE: event = GSOCK_OUTPUT; break; |
| 806 | case FD_ACCEPT: event = GSOCK_CONNECTION; break; |
| 807 | case FD_CONNECT: |
| 808 | { |
| 809 | if (WSAGETSELECTERROR(lParam) != 0) |
| 810 | event = GSOCK_LOST; |
| 811 | else |
| 812 | event = GSOCK_CONNECTION; |
| 813 | break; |
| 814 | } |
| 815 | case FD_CLOSE: event = GSOCK_LOST; break; |
| 816 | } |
| 817 | |
| 818 | if (event != -1) |
| 819 | cback = socket->m_cbacks[event]; |
| 820 | } |
| 821 | |
| 822 | /* OK, we can now leave the critical section because we have |
| 823 | * already obtained the callback address (we make no further |
| 824 | * accesses to socket->whatever) |
| 825 | */ |
| 826 | LeaveCriticalSection(&critical); |
| 827 | |
| 828 | if (cback != NULL) |
| 829 | (cback)(socket, event, socket->m_data[event]); |
| 830 | |
| 831 | return (LRESULT) 0; |
| 832 | } |
| 833 | else |
| 834 | return DefWindowProc(hWnd, uMsg, wParam, lParam); |
| 835 | } |
| 836 | |
| 837 | |
| 838 | /* _GSocket_Input_Timeout: |
| 839 | * For blocking sockets, wait until data is available or |
| 840 | * until timeout ellapses. |
| 841 | */ |
| 842 | GSocketError _GSocket_Input_Timeout(GSocket *socket) |
| 843 | { |
| 844 | fd_set readfds; |
| 845 | |
| 846 | if (!socket->m_non_blocking) |
| 847 | { |
| 848 | FD_ZERO(&readfds); |
| 849 | FD_SET(socket->m_fd, &readfds); |
| 850 | if (select(0, &readfds, NULL, NULL, &socket->m_timeout) == 0) |
| 851 | { |
| 852 | socket->m_error = GSOCK_TIMEDOUT; |
| 853 | return GSOCK_TIMEDOUT; |
| 854 | } |
| 855 | } |
| 856 | return GSOCK_NOERROR; |
| 857 | } |
| 858 | |
| 859 | /* _GSocket_Output_Timeout: |
| 860 | * For blocking sockets, wait until data can be sent without |
| 861 | * blocking or until timeout ellapses. |
| 862 | */ |
| 863 | GSocketError _GSocket_Output_Timeout(GSocket *socket) |
| 864 | { |
| 865 | fd_set writefds; |
| 866 | |
| 867 | if (!socket->m_non_blocking) |
| 868 | { |
| 869 | FD_ZERO(&writefds); |
| 870 | FD_SET(socket->m_fd, &writefds); |
| 871 | if (select(0, NULL, &writefds, NULL, &socket->m_timeout) == 0) |
| 872 | { |
| 873 | socket->m_error = GSOCK_TIMEDOUT; |
| 874 | return GSOCK_TIMEDOUT; |
| 875 | } |
| 876 | } |
| 877 | return GSOCK_NOERROR; |
| 878 | } |
| 879 | |
| 880 | int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size) |
| 881 | { |
| 882 | int ret; |
| 883 | |
| 884 | ret = recv(socket->m_fd, buffer, size, 0); |
| 885 | |
| 886 | if (ret == SOCKET_ERROR) |
| 887 | { |
| 888 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 889 | socket->m_error = GSOCK_IOERR; |
| 890 | else |
| 891 | socket->m_error = GSOCK_WOULDBLOCK; |
| 892 | |
| 893 | return -1; |
| 894 | } |
| 895 | |
| 896 | return ret; |
| 897 | } |
| 898 | |
| 899 | int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size) |
| 900 | { |
| 901 | struct sockaddr from; |
| 902 | SOCKLEN_T fromlen; |
| 903 | int ret; |
| 904 | |
| 905 | fromlen = sizeof(from); |
| 906 | |
| 907 | ret = recvfrom(socket->m_fd, buffer, size, 0, &from, &fromlen); |
| 908 | |
| 909 | if (ret == SOCKET_ERROR) |
| 910 | { |
| 911 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 912 | socket->m_error = GSOCK_IOERR; |
| 913 | else |
| 914 | socket->m_error = GSOCK_WOULDBLOCK; |
| 915 | |
| 916 | return -1; |
| 917 | } |
| 918 | |
| 919 | /* Translate a system address into a GSocket address */ |
| 920 | if (!socket->m_peer) |
| 921 | { |
| 922 | socket->m_peer = GAddress_new(); |
| 923 | if (!socket->m_peer) |
| 924 | { |
| 925 | socket->m_error = GSOCK_MEMERR; |
| 926 | return -1; |
| 927 | } |
| 928 | } |
| 929 | if (_GAddress_translate_from(socket->m_peer, &from, fromlen) != GSOCK_NOERROR) |
| 930 | { |
| 931 | socket->m_error = GSOCK_MEMERR; |
| 932 | GAddress_destroy(socket->m_peer); |
| 933 | return -1; |
| 934 | } |
| 935 | |
| 936 | return ret; |
| 937 | } |
| 938 | |
| 939 | int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size) |
| 940 | { |
| 941 | int ret; |
| 942 | |
| 943 | ret = send(socket->m_fd, buffer, size, 0); |
| 944 | |
| 945 | if (ret == SOCKET_ERROR) |
| 946 | { |
| 947 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 948 | socket->m_error = GSOCK_IOERR; |
| 949 | else |
| 950 | socket->m_error = GSOCK_WOULDBLOCK; |
| 951 | |
| 952 | return -1; |
| 953 | } |
| 954 | return ret; |
| 955 | } |
| 956 | |
| 957 | int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size) |
| 958 | { |
| 959 | struct sockaddr *addr; |
| 960 | int len, ret; |
| 961 | |
| 962 | if (!socket->m_peer) |
| 963 | { |
| 964 | socket->m_error = GSOCK_INVADDR; |
| 965 | return -1; |
| 966 | } |
| 967 | |
| 968 | if (!_GAddress_translate_to(socket->m_peer, &addr, &len)) |
| 969 | { |
| 970 | socket->m_error = GSOCK_MEMERR; |
| 971 | return -1; |
| 972 | } |
| 973 | |
| 974 | ret = sendto(socket->m_fd, buffer, size, 0, addr, len); |
| 975 | |
| 976 | /* Frees memory allocated by _GAddress_translate_to */ |
| 977 | free(addr); |
| 978 | |
| 979 | if (ret == SOCKET_ERROR) |
| 980 | { |
| 981 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 982 | socket->m_error = GSOCK_IOERR; |
| 983 | else |
| 984 | socket->m_error = GSOCK_WOULDBLOCK; |
| 985 | |
| 986 | return -1; |
| 987 | } |
| 988 | return ret; |
| 989 | } |
| 990 | |
| 991 | |
| 992 | /* |
| 993 | * ------------------------------------------------------------------------- |
| 994 | * GAddress |
| 995 | * ------------------------------------------------------------------------- |
| 996 | */ |
| 997 | |
| 998 | /* CHECK_ADDRESS verifies that the current family is either GSOCK_NOFAMILY |
| 999 | * or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it initalizes address |
| 1000 | * to be a GSOCK_*family*. In other cases, it returns GSOCK_INVADDR. |
| 1001 | */ |
| 1002 | #define CHECK_ADDRESS(address, family, retval) \ |
| 1003 | { \ |
| 1004 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1005 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1006 | return address->m_error; \ |
| 1007 | if (address->m_family != GSOCK_##family) \ |
| 1008 | { \ |
| 1009 | address->m_error = GSOCK_INVADDR; \ |
| 1010 | return retval; \ |
| 1011 | } \ |
| 1012 | } |
| 1013 | |
| 1014 | GAddress *GAddress_new() |
| 1015 | { |
| 1016 | GAddress *address; |
| 1017 | |
| 1018 | if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1019 | return NULL; |
| 1020 | |
| 1021 | address->m_family = GSOCK_NOFAMILY; |
| 1022 | address->m_addr = NULL; |
| 1023 | address->m_len = 0; |
| 1024 | |
| 1025 | return address; |
| 1026 | } |
| 1027 | |
| 1028 | GAddress *GAddress_copy(GAddress *address) |
| 1029 | { |
| 1030 | GAddress *addr2; |
| 1031 | |
| 1032 | assert(address != NULL); |
| 1033 | |
| 1034 | if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1035 | return NULL; |
| 1036 | |
| 1037 | memcpy(addr2, address, sizeof(GAddress)); |
| 1038 | |
| 1039 | if (address->m_addr) |
| 1040 | { |
| 1041 | addr2->m_addr = (struct sockaddr *) malloc(addr2->m_len); |
| 1042 | if (addr2->m_addr == NULL) |
| 1043 | { |
| 1044 | free(addr2); |
| 1045 | return NULL; |
| 1046 | } |
| 1047 | memcpy(addr2->m_addr, address->m_addr, addr2->m_len); |
| 1048 | } |
| 1049 | |
| 1050 | return addr2; |
| 1051 | } |
| 1052 | |
| 1053 | void GAddress_destroy(GAddress *address) |
| 1054 | { |
| 1055 | assert(address != NULL); |
| 1056 | |
| 1057 | free(address); |
| 1058 | } |
| 1059 | |
| 1060 | void GAddress_SetFamily(GAddress *address, GAddressType type) |
| 1061 | { |
| 1062 | assert(address != NULL); |
| 1063 | |
| 1064 | address->m_family = type; |
| 1065 | } |
| 1066 | |
| 1067 | GAddressType GAddress_GetFamily(GAddress *address) |
| 1068 | { |
| 1069 | assert(address != NULL); |
| 1070 | |
| 1071 | return address->m_family; |
| 1072 | } |
| 1073 | |
| 1074 | GSocketError _GAddress_translate_from(GAddress *address, |
| 1075 | struct sockaddr *addr, int len) |
| 1076 | { |
| 1077 | address->m_realfamily = addr->sa_family; |
| 1078 | switch (addr->sa_family) |
| 1079 | { |
| 1080 | case AF_INET: |
| 1081 | address->m_family = GSOCK_INET; |
| 1082 | break; |
| 1083 | case AF_UNIX: |
| 1084 | address->m_family = GSOCK_UNIX; |
| 1085 | break; |
| 1086 | #ifdef AF_INET6 |
| 1087 | case AF_INET6: |
| 1088 | address->m_family = GSOCK_INET6; |
| 1089 | break; |
| 1090 | #endif |
| 1091 | default: |
| 1092 | { |
| 1093 | address->m_error = GSOCK_INVOP; |
| 1094 | return GSOCK_INVOP; |
| 1095 | } |
| 1096 | } |
| 1097 | |
| 1098 | if (address->m_addr) |
| 1099 | free(address->m_addr); |
| 1100 | |
| 1101 | address->m_len = len; |
| 1102 | address->m_addr = (struct sockaddr *) malloc(len); |
| 1103 | |
| 1104 | if (address->m_addr == NULL) |
| 1105 | { |
| 1106 | address->m_error = GSOCK_MEMERR; |
| 1107 | return GSOCK_MEMERR; |
| 1108 | } |
| 1109 | memcpy(address->m_addr, addr, len); |
| 1110 | |
| 1111 | return GSOCK_NOERROR; |
| 1112 | } |
| 1113 | |
| 1114 | GSocketError _GAddress_translate_to(GAddress *address, |
| 1115 | struct sockaddr **addr, int *len) |
| 1116 | { |
| 1117 | if (!address->m_addr) |
| 1118 | { |
| 1119 | address->m_error = GSOCK_INVADDR; |
| 1120 | return GSOCK_INVADDR; |
| 1121 | } |
| 1122 | |
| 1123 | *len = address->m_len; |
| 1124 | *addr = (struct sockaddr *) malloc(address->m_len); |
| 1125 | if (*addr == NULL) |
| 1126 | { |
| 1127 | address->m_error = GSOCK_MEMERR; |
| 1128 | return GSOCK_MEMERR; |
| 1129 | } |
| 1130 | |
| 1131 | memcpy(*addr, address->m_addr, address->m_len); |
| 1132 | return GSOCK_NOERROR; |
| 1133 | } |
| 1134 | |
| 1135 | /* |
| 1136 | * ------------------------------------------------------------------------- |
| 1137 | * Internet address family |
| 1138 | * ------------------------------------------------------------------------- |
| 1139 | */ |
| 1140 | |
| 1141 | GSocketError _GAddress_Init_INET(GAddress *address) |
| 1142 | { |
| 1143 | address->m_addr = (struct sockaddr *) malloc(address->m_len); |
| 1144 | if (address->m_addr == NULL) |
| 1145 | { |
| 1146 | address->m_error = GSOCK_MEMERR; |
| 1147 | return GSOCK_MEMERR; |
| 1148 | } |
| 1149 | |
| 1150 | address->m_len = sizeof(struct sockaddr_in); |
| 1151 | address->m_family = GSOCK_INET; |
| 1152 | address->m_realfamily = PF_INET; |
| 1153 | ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; |
| 1154 | ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; |
| 1155 | |
| 1156 | return GSOCK_NOERROR; |
| 1157 | } |
| 1158 | |
| 1159 | GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) |
| 1160 | { |
| 1161 | struct hostent *he; |
| 1162 | struct in_addr *addr; |
| 1163 | |
| 1164 | assert(address != NULL); |
| 1165 | |
| 1166 | CHECK_ADDRESS(address, INET, GSOCK_INVADDR); |
| 1167 | |
| 1168 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1169 | |
| 1170 | addr->s_addr = inet_addr(hostname); |
| 1171 | |
| 1172 | /* If it is a numeric host name, convert it now */ |
| 1173 | if (addr->s_addr == INADDR_NONE) |
| 1174 | { |
| 1175 | struct in_addr *array_addr; |
| 1176 | |
| 1177 | /* It is a real name, we solve it */ |
| 1178 | if ((he = gethostbyname(hostname)) == NULL) |
| 1179 | { |
| 1180 | address->m_error = GSOCK_NOHOST; |
| 1181 | return GSOCK_NOHOST; |
| 1182 | } |
| 1183 | array_addr = (struct in_addr *) *(he->h_addr_list); |
| 1184 | addr->s_addr = array_addr[0].s_addr; |
| 1185 | } |
| 1186 | return GSOCK_NOERROR; |
| 1187 | } |
| 1188 | |
| 1189 | GSocketError GAddress_INET_SetHostAddress(GAddress *address, |
| 1190 | unsigned long hostaddr) |
| 1191 | { |
| 1192 | struct in_addr *addr; |
| 1193 | |
| 1194 | assert(address != NULL); |
| 1195 | |
| 1196 | CHECK_ADDRESS(address, INET, GSOCK_INVADDR); |
| 1197 | |
| 1198 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1199 | addr->s_addr = hostaddr; |
| 1200 | |
| 1201 | return GSOCK_NOERROR; |
| 1202 | } |
| 1203 | |
| 1204 | GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, |
| 1205 | const char *protocol) |
| 1206 | { |
| 1207 | struct servent *se; |
| 1208 | struct sockaddr_in *addr; |
| 1209 | |
| 1210 | assert(address != NULL); |
| 1211 | CHECK_ADDRESS(address, INET, GSOCK_INVADDR); |
| 1212 | |
| 1213 | if (!port) |
| 1214 | { |
| 1215 | address->m_error = GSOCK_INVPORT; |
| 1216 | return GSOCK_INVOP; |
| 1217 | } |
| 1218 | |
| 1219 | se = getservbyname(port, protocol); |
| 1220 | if (!se) |
| 1221 | { |
| 1222 | if (isdigit(port[0])) |
| 1223 | { |
| 1224 | int port_int; |
| 1225 | |
| 1226 | port_int = atoi(port); |
| 1227 | addr = (struct sockaddr_in *)address->m_addr; |
| 1228 | addr->sin_port = htons((u_short) port_int); |
| 1229 | return GSOCK_NOERROR; |
| 1230 | } |
| 1231 | |
| 1232 | address->m_error = GSOCK_INVPORT; |
| 1233 | return GSOCK_INVPORT; |
| 1234 | } |
| 1235 | |
| 1236 | addr = (struct sockaddr_in *)address->m_addr; |
| 1237 | addr->sin_port = se->s_port; |
| 1238 | |
| 1239 | return GSOCK_NOERROR; |
| 1240 | } |
| 1241 | |
| 1242 | GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port) |
| 1243 | { |
| 1244 | struct sockaddr_in *addr; |
| 1245 | |
| 1246 | assert(address != NULL); |
| 1247 | CHECK_ADDRESS(address, INET, GSOCK_INVADDR); |
| 1248 | |
| 1249 | addr = (struct sockaddr_in *)address->m_addr; |
| 1250 | addr->sin_port = htons(port); |
| 1251 | |
| 1252 | return GSOCK_NOERROR; |
| 1253 | } |
| 1254 | |
| 1255 | GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf) |
| 1256 | { |
| 1257 | struct hostent *he; |
| 1258 | char *addr_buf; |
| 1259 | struct sockaddr_in *addr; |
| 1260 | |
| 1261 | assert(address != NULL); |
| 1262 | CHECK_ADDRESS(address, INET, GSOCK_INVADDR); |
| 1263 | |
| 1264 | addr = (struct sockaddr_in *)address->m_addr; |
| 1265 | addr_buf = (char *)&(addr->sin_addr); |
| 1266 | |
| 1267 | he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET); |
| 1268 | if (he == NULL) |
| 1269 | { |
| 1270 | address->m_error = GSOCK_NOHOST; |
| 1271 | return GSOCK_NOHOST; |
| 1272 | } |
| 1273 | |
| 1274 | strncpy(hostname, he->h_name, sbuf); |
| 1275 | |
| 1276 | return GSOCK_NOERROR; |
| 1277 | } |
| 1278 | |
| 1279 | unsigned long GAddress_INET_GetHostAddress(GAddress *address) |
| 1280 | { |
| 1281 | struct sockaddr_in *addr; |
| 1282 | |
| 1283 | assert(address != NULL); |
| 1284 | CHECK_ADDRESS(address, INET, 0); |
| 1285 | |
| 1286 | addr = (struct sockaddr_in *)address->m_addr; |
| 1287 | |
| 1288 | return addr->sin_addr.s_addr; |
| 1289 | } |
| 1290 | |
| 1291 | unsigned short GAddress_INET_GetPort(GAddress *address) |
| 1292 | { |
| 1293 | struct sockaddr_in *addr; |
| 1294 | |
| 1295 | assert(address != NULL); |
| 1296 | CHECK_ADDRESS(address, INET, 0); |
| 1297 | |
| 1298 | addr = (struct sockaddr_in *)address->m_addr; |
| 1299 | return ntohs(addr->sin_port); |
| 1300 | } |
| 1301 | |
| 1302 | /* |
| 1303 | * ------------------------------------------------------------------------- |
| 1304 | * Unix address family |
| 1305 | * ------------------------------------------------------------------------- |
| 1306 | */ |
| 1307 | |
| 1308 | GSocketError _GAddress_Init_UNIX(GAddress *address) |
| 1309 | { |
| 1310 | assert (address != NULL); |
| 1311 | address->m_error = GSOCK_INVADDR; |
| 1312 | return GSOCK_INVADDR; |
| 1313 | } |
| 1314 | |
| 1315 | GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path) |
| 1316 | { |
| 1317 | assert (address != NULL); |
| 1318 | address->m_error = GSOCK_INVADDR; |
| 1319 | return GSOCK_INVADDR; |
| 1320 | } |
| 1321 | |
| 1322 | GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) |
| 1323 | { |
| 1324 | assert (address != NULL); |
| 1325 | address->m_error = GSOCK_INVADDR; |
| 1326 | return GSOCK_INVADDR; |
| 1327 | } |
| 1328 | |
| 1329 | |
| 1330 | #endif /* !defined(__WXMSW__) || (defined(__WXMSW__) && wxUSE_SOCKETS) */ |
| 1331 | |
| 1332 | |
| 1333 | |
| 1334 | /* Diferencias con la version Unix: |
| 1335 | * - El descriptor es SOCKET y no int |
| 1336 | * - Constantes -1 pasan a INVALID_SOCKET |
| 1337 | * - Errores en muchas funciones pasan de -1 o <0 a SOCKET_ERROR |
| 1338 | * - ioctl y close pasan a ioctlsocket y closesocket |
| 1339 | * - inet_addr en lugar de inet_aton |
| 1340 | * - Codigo de inicializacion y terminacion para inicializar y |
| 1341 | * terminar WinSocket y para la ventana interna. |
| 1342 | * - SetTimeout en la version MSW simplemente guarda el valor en |
| 1343 | * socket.m_timeout, por tanto no hay necesidad de llamar a |
| 1344 | * SetTimeout cada vez que se crea realmente un socket (no |
| 1345 | * un gsocket). |
| 1346 | * - Lo mismo para SetNonBlocking. |
| 1347 | */ |