| 1 | /* ------------------------------------------------------------------------- |
| 2 | * Project: GSocket (Generic Socket) |
| 3 | * Name: gsocket.c |
| 4 | * Author: Guillermo Rodriguez Garcia <guille@iies.es> |
| 5 | * Purpose: GSocket main MSW file |
| 6 | * CVSID: $Id$ |
| 7 | * ------------------------------------------------------------------------- |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * PLEASE don't put C++ comments here - this is a C source file. |
| 12 | */ |
| 13 | |
| 14 | #ifdef _MSC_VER |
| 15 | /* RPCNOTIFICATION_ROUTINE in rasasync.h (included from winsock.h), |
| 16 | * warning: conditional expression is constant. |
| 17 | */ |
| 18 | # pragma warning(disable:4115) |
| 19 | /* FD_SET, |
| 20 | * warning: named type definition in parentheses. |
| 21 | */ |
| 22 | # pragma warning(disable:4127) |
| 23 | /* GAddress_UNIX_GetPath, |
| 24 | * warning: unreferenced formal parameter. |
| 25 | */ |
| 26 | # pragma warning(disable:4100) |
| 27 | #endif /* _MSC_VER */ |
| 28 | |
| 29 | |
| 30 | #ifndef __GSOCKET_STANDALONE__ |
| 31 | # include "wx/setup.h" |
| 32 | #endif |
| 33 | |
| 34 | #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) |
| 35 | |
| 36 | #ifndef __GSOCKET_STANDALONE__ |
| 37 | # include "wx/msw/gsockmsw.h" |
| 38 | # include "wx/gsocket.h" |
| 39 | #else |
| 40 | # include "gsockmsw.h" |
| 41 | # include "gsocket.h" |
| 42 | #endif /* __GSOCKET_STANDALONE__ */ |
| 43 | |
| 44 | /* Redefine some GUI-only functions to do nothing in console mode */ |
| 45 | #if defined(wxUSE_GUI) && !wxUSE_GUI |
| 46 | # define _GSocket_GUI_Init(socket) (1) |
| 47 | # define _GSocket_GUI_Destroy(socket) |
| 48 | # define _GSocket_Enable_Events(socket) |
| 49 | # define _GSocket_Disable_Events(socket) |
| 50 | #endif /* wxUSE_GUI */ |
| 51 | |
| 52 | |
| 53 | #include <assert.h> |
| 54 | #include <string.h> |
| 55 | #include <stdio.h> |
| 56 | #include <stdlib.h> |
| 57 | #include <stddef.h> |
| 58 | #include <ctype.h> |
| 59 | |
| 60 | #include <winsock.h> |
| 61 | |
| 62 | |
| 63 | /* if we use configure for MSW SOCKLEN_T will be already defined */ |
| 64 | #ifndef SOCKLEN_T |
| 65 | # define SOCKLEN_T int |
| 66 | #endif |
| 67 | |
| 68 | |
| 69 | /* Constructors / Destructors for GSocket */ |
| 70 | |
| 71 | GSocket *GSocket_new(void) |
| 72 | { |
| 73 | int i, success; |
| 74 | GSocket *socket; |
| 75 | |
| 76 | if ((socket = (GSocket *) malloc(sizeof(GSocket))) == NULL) |
| 77 | return NULL; |
| 78 | |
| 79 | socket->m_fd = INVALID_SOCKET; |
| 80 | for (i = 0; i < GSOCK_MAX_EVENT; i++) |
| 81 | { |
| 82 | socket->m_cbacks[i] = NULL; |
| 83 | } |
| 84 | socket->m_detected = 0; |
| 85 | socket->m_local = NULL; |
| 86 | socket->m_peer = NULL; |
| 87 | socket->m_error = GSOCK_NOERROR; |
| 88 | socket->m_server = FALSE; |
| 89 | socket->m_stream = TRUE; |
| 90 | socket->m_non_blocking = FALSE; |
| 91 | socket->m_timeout.tv_sec = 10 * 60; /* 10 minutes */ |
| 92 | socket->m_timeout.tv_usec = 0; |
| 93 | socket->m_establishing = FALSE; |
| 94 | |
| 95 | /* Per-socket GUI-specific initialization */ |
| 96 | success = _GSocket_GUI_Init(socket); |
| 97 | if (!success) |
| 98 | { |
| 99 | free(socket); |
| 100 | socket = NULL; |
| 101 | } |
| 102 | |
| 103 | return socket; |
| 104 | } |
| 105 | |
| 106 | void GSocket_destroy(GSocket *socket) |
| 107 | { |
| 108 | assert(socket != NULL); |
| 109 | |
| 110 | /* Per-socket GUI-specific cleanup */ |
| 111 | _GSocket_GUI_Destroy(socket); |
| 112 | |
| 113 | /* Check that the socket is really shutdowned */ |
| 114 | if (socket->m_fd != INVALID_SOCKET) |
| 115 | GSocket_Shutdown(socket); |
| 116 | |
| 117 | /* Destroy private addresses */ |
| 118 | if (socket->m_local) |
| 119 | GAddress_destroy(socket->m_local); |
| 120 | |
| 121 | if (socket->m_peer) |
| 122 | GAddress_destroy(socket->m_peer); |
| 123 | |
| 124 | /* Destroy the socket itself */ |
| 125 | free(socket); |
| 126 | } |
| 127 | |
| 128 | /* GSocket_Shutdown: |
| 129 | * Disallow further read/write operations on this socket, close |
| 130 | * the fd and disable all callbacks. |
| 131 | */ |
| 132 | void GSocket_Shutdown(GSocket *socket) |
| 133 | { |
| 134 | int evt; |
| 135 | |
| 136 | assert(socket != NULL); |
| 137 | |
| 138 | /* If socket has been created, shutdown it */ |
| 139 | if (socket->m_fd != INVALID_SOCKET) |
| 140 | { |
| 141 | shutdown(socket->m_fd, 2); |
| 142 | closesocket(socket->m_fd); |
| 143 | socket->m_fd = INVALID_SOCKET; |
| 144 | } |
| 145 | |
| 146 | /* Disable GUI callbacks */ |
| 147 | for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) |
| 148 | socket->m_cbacks[evt] = NULL; |
| 149 | |
| 150 | socket->m_detected = GSOCK_LOST_FLAG; |
| 151 | _GSocket_Disable_Events(socket); |
| 152 | } |
| 153 | |
| 154 | /* Address handling */ |
| 155 | |
| 156 | /* GSocket_SetLocal: |
| 157 | * GSocket_GetLocal: |
| 158 | * GSocket_SetPeer: |
| 159 | * GSocket_GetPeer: |
| 160 | * Set or get the local or peer address for this socket. The 'set' |
| 161 | * functions return GSOCK_NOERROR on success, an error code otherwise. |
| 162 | * The 'get' functions return a pointer to a GAddress object on success, |
| 163 | * or NULL otherwise, in which case they set the error code of the |
| 164 | * corresponding GSocket. |
| 165 | * |
| 166 | * Error codes: |
| 167 | * GSOCK_INVSOCK - the socket is not valid. |
| 168 | * GSOCK_INVADDR - the address is not valid. |
| 169 | */ |
| 170 | GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address) |
| 171 | { |
| 172 | assert(socket != NULL); |
| 173 | |
| 174 | /* the socket must be initialized, or it must be a server */ |
| 175 | if (socket->m_fd != INVALID_SOCKET && !socket->m_server) |
| 176 | { |
| 177 | socket->m_error = GSOCK_INVSOCK; |
| 178 | return GSOCK_INVSOCK; |
| 179 | } |
| 180 | |
| 181 | /* check address */ |
| 182 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 183 | { |
| 184 | socket->m_error = GSOCK_INVADDR; |
| 185 | return GSOCK_INVADDR; |
| 186 | } |
| 187 | |
| 188 | if (socket->m_local) |
| 189 | GAddress_destroy(socket->m_local); |
| 190 | |
| 191 | socket->m_local = GAddress_copy(address); |
| 192 | |
| 193 | return GSOCK_NOERROR; |
| 194 | } |
| 195 | |
| 196 | GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address) |
| 197 | { |
| 198 | assert(socket != NULL); |
| 199 | |
| 200 | /* check address */ |
| 201 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 202 | { |
| 203 | socket->m_error = GSOCK_INVADDR; |
| 204 | return GSOCK_INVADDR; |
| 205 | } |
| 206 | |
| 207 | if (socket->m_peer) |
| 208 | GAddress_destroy(socket->m_peer); |
| 209 | |
| 210 | socket->m_peer = GAddress_copy(address); |
| 211 | |
| 212 | return GSOCK_NOERROR; |
| 213 | } |
| 214 | |
| 215 | GAddress *GSocket_GetLocal(GSocket *socket) |
| 216 | { |
| 217 | GAddress *address; |
| 218 | struct sockaddr addr; |
| 219 | SOCKLEN_T size = sizeof(addr); |
| 220 | GSocketError err; |
| 221 | |
| 222 | assert(socket != NULL); |
| 223 | |
| 224 | /* try to get it from the m_local var first */ |
| 225 | if (socket->m_local) |
| 226 | return GAddress_copy(socket->m_local); |
| 227 | |
| 228 | /* else, if the socket is initialized, try getsockname */ |
| 229 | if (socket->m_fd == INVALID_SOCKET) |
| 230 | { |
| 231 | socket->m_error = GSOCK_INVSOCK; |
| 232 | return NULL; |
| 233 | } |
| 234 | |
| 235 | if (getsockname(socket->m_fd, &addr, &size) == SOCKET_ERROR) |
| 236 | { |
| 237 | socket->m_error = GSOCK_IOERR; |
| 238 | return NULL; |
| 239 | } |
| 240 | |
| 241 | /* got a valid address from getsockname, create a GAddress object */ |
| 242 | if ((address = GAddress_new()) == NULL) |
| 243 | { |
| 244 | socket->m_error = GSOCK_MEMERR; |
| 245 | return NULL; |
| 246 | } |
| 247 | |
| 248 | if ((err = _GAddress_translate_from(address, &addr, size)) != GSOCK_NOERROR) |
| 249 | { |
| 250 | GAddress_destroy(address); |
| 251 | socket->m_error = err; |
| 252 | return NULL; |
| 253 | } |
| 254 | |
| 255 | return address; |
| 256 | } |
| 257 | |
| 258 | GAddress *GSocket_GetPeer(GSocket *socket) |
| 259 | { |
| 260 | assert(socket != NULL); |
| 261 | |
| 262 | /* try to get it from the m_peer var */ |
| 263 | if (socket->m_peer) |
| 264 | return GAddress_copy(socket->m_peer); |
| 265 | |
| 266 | return NULL; |
| 267 | } |
| 268 | |
| 269 | /* Server specific parts */ |
| 270 | |
| 271 | /* GSocket_SetServer: |
| 272 | * Sets up this socket as a server. The local address must have been |
| 273 | * set with GSocket_SetLocal() before GSocket_SetServer() is called. |
| 274 | * Returns GSOCK_NOERROR on success, one of the following otherwise: |
| 275 | * |
| 276 | * Error codes: |
| 277 | * GSOCK_INVSOCK - the socket is in use. |
| 278 | * GSOCK_INVADDR - the local address has not been set. |
| 279 | * GSOCK_IOERR - low-level error. |
| 280 | */ |
| 281 | GSocketError GSocket_SetServer(GSocket *sck) |
| 282 | { |
| 283 | u_long arg = 1; |
| 284 | |
| 285 | assert(sck != NULL); |
| 286 | |
| 287 | /* must not be in use */ |
| 288 | if (sck->m_fd != INVALID_SOCKET) |
| 289 | { |
| 290 | sck->m_error = GSOCK_INVSOCK; |
| 291 | return GSOCK_INVSOCK; |
| 292 | } |
| 293 | |
| 294 | /* the local addr must have been set */ |
| 295 | if (!sck->m_local) |
| 296 | { |
| 297 | sck->m_error = GSOCK_INVADDR; |
| 298 | return GSOCK_INVADDR; |
| 299 | } |
| 300 | |
| 301 | /* Initialize all fields */ |
| 302 | sck->m_server = TRUE; |
| 303 | sck->m_stream = TRUE; |
| 304 | sck->m_oriented = TRUE; |
| 305 | |
| 306 | /* Create the socket */ |
| 307 | sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0); |
| 308 | |
| 309 | if (sck->m_fd == INVALID_SOCKET) |
| 310 | { |
| 311 | sck->m_error = GSOCK_IOERR; |
| 312 | return GSOCK_IOERR; |
| 313 | } |
| 314 | |
| 315 | ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 316 | _GSocket_Enable_Events(sck); |
| 317 | |
| 318 | /* Bind to the local address, |
| 319 | * retrieve the actual address bound, |
| 320 | * and listen up to 5 connections. |
| 321 | */ |
| 322 | if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) || |
| 323 | (getsockname(sck->m_fd, |
| 324 | sck->m_local->m_addr, |
| 325 | (SOCKLEN_T *)&sck->m_local->m_len) != 0) || |
| 326 | (listen(sck->m_fd, 5) != 0)) |
| 327 | { |
| 328 | closesocket(sck->m_fd); |
| 329 | sck->m_fd = INVALID_SOCKET; |
| 330 | sck->m_error = GSOCK_IOERR; |
| 331 | return GSOCK_IOERR; |
| 332 | } |
| 333 | |
| 334 | return GSOCK_NOERROR; |
| 335 | } |
| 336 | |
| 337 | /* GSocket_WaitConnection: |
| 338 | * Waits for an incoming client connection. Returns a pointer to |
| 339 | * a GSocket object, or NULL if there was an error, in which case |
| 340 | * the last error field will be updated for the calling GSocket. |
| 341 | * |
| 342 | * Error codes (set in the calling GSocket) |
| 343 | * GSOCK_INVSOCK - the socket is not valid or not a server. |
| 344 | * GSOCK_TIMEDOUT - timeout, no incoming connections. |
| 345 | * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking. |
| 346 | * GSOCK_MEMERR - couldn't allocate memory. |
| 347 | * GSOCK_IOERR - low-level error. |
| 348 | */ |
| 349 | GSocket *GSocket_WaitConnection(GSocket *sck) |
| 350 | { |
| 351 | GSocket *connection; |
| 352 | struct sockaddr from; |
| 353 | SOCKLEN_T fromlen = sizeof(from); |
| 354 | GSocketError err; |
| 355 | u_long arg = 1; |
| 356 | |
| 357 | assert(sck != NULL); |
| 358 | |
| 359 | /* Reenable CONNECTION events */ |
| 360 | sck->m_detected &= ~GSOCK_CONNECTION_FLAG; |
| 361 | |
| 362 | /* If the socket has already been created, we exit immediately */ |
| 363 | if (sck->m_fd == INVALID_SOCKET || !sck->m_server) |
| 364 | { |
| 365 | sck->m_error = GSOCK_INVSOCK; |
| 366 | return NULL; |
| 367 | } |
| 368 | |
| 369 | /* Create a GSocket object for the new connection */ |
| 370 | connection = GSocket_new(); |
| 371 | |
| 372 | if (!connection) |
| 373 | { |
| 374 | sck->m_error = GSOCK_MEMERR; |
| 375 | return NULL; |
| 376 | } |
| 377 | |
| 378 | /* Wait for a connection (with timeout) */ |
| 379 | if (_GSocket_Input_Timeout(sck) == GSOCK_TIMEDOUT) |
| 380 | { |
| 381 | GSocket_destroy(connection); |
| 382 | /* sck->m_error set by _GSocket_Input_Timeout */ |
| 383 | return NULL; |
| 384 | } |
| 385 | |
| 386 | connection->m_fd = accept(sck->m_fd, &from, &fromlen); |
| 387 | |
| 388 | if (connection->m_fd == INVALID_SOCKET) |
| 389 | { |
| 390 | if (WSAGetLastError() == WSAEWOULDBLOCK) |
| 391 | sck->m_error = GSOCK_WOULDBLOCK; |
| 392 | else |
| 393 | sck->m_error = GSOCK_IOERR; |
| 394 | |
| 395 | GSocket_destroy(connection); |
| 396 | return NULL; |
| 397 | } |
| 398 | |
| 399 | /* Initialize all fields */ |
| 400 | connection->m_server = FALSE; |
| 401 | connection->m_stream = TRUE; |
| 402 | connection->m_oriented = TRUE; |
| 403 | |
| 404 | /* Setup the peer address field */ |
| 405 | connection->m_peer = GAddress_new(); |
| 406 | if (!connection->m_peer) |
| 407 | { |
| 408 | GSocket_destroy(connection); |
| 409 | sck->m_error = GSOCK_MEMERR; |
| 410 | return NULL; |
| 411 | } |
| 412 | err = _GAddress_translate_from(connection->m_peer, &from, fromlen); |
| 413 | if (err != GSOCK_NOERROR) |
| 414 | { |
| 415 | GAddress_destroy(connection->m_peer); |
| 416 | GSocket_destroy(connection); |
| 417 | sck->m_error = err; |
| 418 | return NULL; |
| 419 | } |
| 420 | |
| 421 | ioctlsocket(connection->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 422 | _GSocket_Enable_Events(connection); |
| 423 | |
| 424 | return connection; |
| 425 | } |
| 426 | |
| 427 | /* Client specific parts */ |
| 428 | |
| 429 | /* GSocket_Connect: |
| 430 | * For stream (connection oriented) sockets, GSocket_Connect() tries |
| 431 | * to establish a client connection to a server using the peer address |
| 432 | * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the |
| 433 | * connection has been succesfully established, or one of the error |
| 434 | * codes listed below. Note that for nonblocking sockets, a return |
| 435 | * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection |
| 436 | * request can be completed later; you should use GSocket_Select() |
| 437 | * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the |
| 438 | * corresponding asynchronous events. |
| 439 | * |
| 440 | * For datagram (non connection oriented) sockets, GSocket_Connect() |
| 441 | * just sets the peer address established with GSocket_SetPeer() as |
| 442 | * default destination. |
| 443 | * |
| 444 | * Error codes: |
| 445 | * GSOCK_INVSOCK - the socket is in use or not valid. |
| 446 | * GSOCK_INVADDR - the peer address has not been established. |
| 447 | * GSOCK_TIMEDOUT - timeout, the connection failed. |
| 448 | * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only) |
| 449 | * GSOCK_MEMERR - couldn't allocate memory. |
| 450 | * GSOCK_IOERR - low-level error. |
| 451 | */ |
| 452 | GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) |
| 453 | { |
| 454 | int ret, err; |
| 455 | u_long arg = 1; |
| 456 | |
| 457 | assert(sck != NULL); |
| 458 | |
| 459 | /* Enable CONNECTION events (needed for nonblocking connections) */ |
| 460 | sck->m_detected &= ~GSOCK_CONNECTION_FLAG; |
| 461 | |
| 462 | if (sck->m_fd != INVALID_SOCKET) |
| 463 | { |
| 464 | sck->m_error = GSOCK_INVSOCK; |
| 465 | return GSOCK_INVSOCK; |
| 466 | } |
| 467 | |
| 468 | if (!sck->m_peer) |
| 469 | { |
| 470 | sck->m_error = GSOCK_INVADDR; |
| 471 | return GSOCK_INVADDR; |
| 472 | } |
| 473 | |
| 474 | /* Streamed or dgram socket? */ |
| 475 | sck->m_stream = (stream == GSOCK_STREAMED); |
| 476 | sck->m_oriented = TRUE; |
| 477 | sck->m_server = FALSE; |
| 478 | sck->m_establishing = FALSE; |
| 479 | |
| 480 | /* Create the socket */ |
| 481 | sck->m_fd = socket(sck->m_peer->m_realfamily, |
| 482 | sck->m_stream? SOCK_STREAM : SOCK_DGRAM, 0); |
| 483 | |
| 484 | if (sck->m_fd == INVALID_SOCKET) |
| 485 | { |
| 486 | sck->m_error = GSOCK_IOERR; |
| 487 | return GSOCK_IOERR; |
| 488 | } |
| 489 | |
| 490 | ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 491 | _GSocket_Enable_Events(sck); |
| 492 | |
| 493 | /* Connect it to the peer address, with a timeout (see below) */ |
| 494 | ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len); |
| 495 | |
| 496 | if (ret == SOCKET_ERROR) |
| 497 | { |
| 498 | err = WSAGetLastError(); |
| 499 | |
| 500 | /* If connect failed with EWOULDBLOCK and the GSocket object |
| 501 | * is in blocking mode, we select() for the specified timeout |
| 502 | * checking for writability to see if the connection request |
| 503 | * completes. |
| 504 | */ |
| 505 | if ((err == WSAEWOULDBLOCK) && (!sck->m_non_blocking)) |
| 506 | { |
| 507 | err = _GSocket_Connect_Timeout(sck); |
| 508 | |
| 509 | if (err != GSOCK_NOERROR) |
| 510 | { |
| 511 | closesocket(sck->m_fd); |
| 512 | sck->m_fd = INVALID_SOCKET; |
| 513 | /* sck->m_error is set in _GSocket_Connect_Timeout */ |
| 514 | } |
| 515 | |
| 516 | return err; |
| 517 | } |
| 518 | |
| 519 | /* If connect failed with EWOULDBLOCK and the GSocket object |
| 520 | * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK |
| 521 | * (and return GSOCK_WOULDBLOCK) but we don't close the socket; |
| 522 | * this way if the connection completes, a GSOCK_CONNECTION |
| 523 | * event will be generated, if enabled. |
| 524 | */ |
| 525 | if ((err == WSAEWOULDBLOCK) && (sck->m_non_blocking)) |
| 526 | { |
| 527 | sck->m_establishing = TRUE; |
| 528 | sck->m_error = GSOCK_WOULDBLOCK; |
| 529 | return GSOCK_WOULDBLOCK; |
| 530 | } |
| 531 | |
| 532 | /* If connect failed with an error other than EWOULDBLOCK, |
| 533 | * then the call to GSocket_Connect() has failed. |
| 534 | */ |
| 535 | closesocket(sck->m_fd); |
| 536 | sck->m_fd = INVALID_SOCKET; |
| 537 | sck->m_error = GSOCK_IOERR; |
| 538 | return GSOCK_IOERR; |
| 539 | } |
| 540 | |
| 541 | return GSOCK_NOERROR; |
| 542 | } |
| 543 | |
| 544 | /* Datagram sockets */ |
| 545 | |
| 546 | /* GSocket_SetNonOriented: |
| 547 | * Sets up this socket as a non-connection oriented (datagram) socket. |
| 548 | * Before using this function, the local address must have been set |
| 549 | * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR |
| 550 | * on success, or one of the following otherwise. |
| 551 | * |
| 552 | * Error codes: |
| 553 | * GSOCK_INVSOCK - the socket is in use. |
| 554 | * GSOCK_INVADDR - the local address has not been set. |
| 555 | * GSOCK_IOERR - low-level error. |
| 556 | */ |
| 557 | GSocketError GSocket_SetNonOriented(GSocket *sck) |
| 558 | { |
| 559 | u_long arg = 1; |
| 560 | |
| 561 | assert(sck != NULL); |
| 562 | |
| 563 | if (sck->m_fd != INVALID_SOCKET) |
| 564 | { |
| 565 | sck->m_error = GSOCK_INVSOCK; |
| 566 | return GSOCK_INVSOCK; |
| 567 | } |
| 568 | |
| 569 | if (!sck->m_local) |
| 570 | { |
| 571 | sck->m_error = GSOCK_INVADDR; |
| 572 | return GSOCK_INVADDR; |
| 573 | } |
| 574 | |
| 575 | /* Initialize all fields */ |
| 576 | sck->m_stream = FALSE; |
| 577 | sck->m_server = FALSE; |
| 578 | sck->m_oriented = FALSE; |
| 579 | |
| 580 | /* Create the socket */ |
| 581 | sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0); |
| 582 | |
| 583 | if (sck->m_fd == INVALID_SOCKET) |
| 584 | { |
| 585 | sck->m_error = GSOCK_IOERR; |
| 586 | return GSOCK_IOERR; |
| 587 | } |
| 588 | |
| 589 | ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 590 | _GSocket_Enable_Events(sck); |
| 591 | |
| 592 | /* Bind to the local address, |
| 593 | * and retrieve the actual address bound. |
| 594 | */ |
| 595 | if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) || |
| 596 | (getsockname(sck->m_fd, |
| 597 | sck->m_local->m_addr, |
| 598 | (SOCKLEN_T *)&sck->m_local->m_len) != 0)) |
| 599 | { |
| 600 | closesocket(sck->m_fd); |
| 601 | sck->m_fd = INVALID_SOCKET; |
| 602 | sck->m_error = GSOCK_IOERR; |
| 603 | return GSOCK_IOERR; |
| 604 | } |
| 605 | |
| 606 | return GSOCK_NOERROR; |
| 607 | } |
| 608 | |
| 609 | /* Generic IO */ |
| 610 | |
| 611 | /* Like recv(), send(), ... */ |
| 612 | int GSocket_Read(GSocket *socket, char *buffer, int size) |
| 613 | { |
| 614 | int ret; |
| 615 | |
| 616 | assert(socket != NULL); |
| 617 | |
| 618 | /* Reenable INPUT events */ |
| 619 | socket->m_detected &= ~GSOCK_INPUT_FLAG; |
| 620 | |
| 621 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 622 | { |
| 623 | socket->m_error = GSOCK_INVSOCK; |
| 624 | return -1; |
| 625 | } |
| 626 | |
| 627 | /* If the socket is blocking, wait for data (with a timeout) */ |
| 628 | if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT) |
| 629 | return -1; |
| 630 | |
| 631 | /* Read the data */ |
| 632 | if (socket->m_stream) |
| 633 | ret = _GSocket_Recv_Stream(socket, buffer, size); |
| 634 | else |
| 635 | ret = _GSocket_Recv_Dgram(socket, buffer, size); |
| 636 | |
| 637 | if (ret == SOCKET_ERROR) |
| 638 | { |
| 639 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 640 | socket->m_error = GSOCK_IOERR; |
| 641 | else |
| 642 | socket->m_error = GSOCK_WOULDBLOCK; |
| 643 | return -1; |
| 644 | } |
| 645 | |
| 646 | return ret; |
| 647 | } |
| 648 | |
| 649 | int GSocket_Write(GSocket *socket, const char *buffer, int size) |
| 650 | { |
| 651 | int ret; |
| 652 | |
| 653 | assert(socket != NULL); |
| 654 | |
| 655 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 656 | { |
| 657 | socket->m_error = GSOCK_INVSOCK; |
| 658 | return -1; |
| 659 | } |
| 660 | |
| 661 | /* If the socket is blocking, wait for writability (with a timeout) */ |
| 662 | if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT) |
| 663 | return -1; |
| 664 | |
| 665 | /* Write the data */ |
| 666 | if (socket->m_stream) |
| 667 | ret = _GSocket_Send_Stream(socket, buffer, size); |
| 668 | else |
| 669 | ret = _GSocket_Send_Dgram(socket, buffer, size); |
| 670 | |
| 671 | if (ret == SOCKET_ERROR) |
| 672 | { |
| 673 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 674 | socket->m_error = GSOCK_IOERR; |
| 675 | else |
| 676 | socket->m_error = GSOCK_WOULDBLOCK; |
| 677 | |
| 678 | /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect |
| 679 | * does). Once the first OUTPUT event is received, users can assume |
| 680 | * that the socket is writable until a read operation fails. Only then |
| 681 | * will further OUTPUT events be posted. |
| 682 | */ |
| 683 | socket->m_detected &= ~GSOCK_OUTPUT_FLAG; |
| 684 | return -1; |
| 685 | } |
| 686 | |
| 687 | return ret; |
| 688 | } |
| 689 | |
| 690 | /* GSocket_Select: |
| 691 | * Polls the socket to determine its status. This function will |
| 692 | * check for the events specified in the 'flags' parameter, and |
| 693 | * it will return a mask indicating which operations can be |
| 694 | * performed. This function won't block, regardless of the |
| 695 | * mode (blocking | nonblocking) of the socket. |
| 696 | */ |
| 697 | GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags) |
| 698 | { |
| 699 | #if defined(wxUSE_GUI) && !wxUSE_GUI |
| 700 | |
| 701 | GSocketEventFlags result = 0; |
| 702 | fd_set readfds; |
| 703 | fd_set writefds; |
| 704 | fd_set exceptfds; |
| 705 | static const struct timeval tv = { 0, 0 }; |
| 706 | |
| 707 | assert(socket != NULL); |
| 708 | |
| 709 | FD_ZERO(&readfds); |
| 710 | FD_ZERO(&writefds); |
| 711 | FD_ZERO(&exceptfds); |
| 712 | FD_SET(socket->m_fd, &readfds); |
| 713 | FD_SET(socket->m_fd, &writefds); |
| 714 | FD_SET(socket->m_fd, &exceptfds); |
| 715 | |
| 716 | /* Check known state first */ |
| 717 | result |= (GSOCK_CONNECTION_FLAG & socket->m_detected & flags); |
| 718 | result |= (GSOCK_LOST_FLAG & socket->m_detected & flags); |
| 719 | |
| 720 | /* Try select now */ |
| 721 | if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0) |
| 722 | return result; |
| 723 | |
| 724 | /* Check for readability */ |
| 725 | if (FD_ISSET(socket->m_fd, &readfds)) |
| 726 | { |
| 727 | /* Assume that closure of the socket is always reported via exceptfds */ |
| 728 | if (socket->m_server && socket->m_stream) |
| 729 | result |= (GSOCK_CONNECTION_FLAG & flags); |
| 730 | else |
| 731 | result |= (GSOCK_INPUT_FLAG & flags); |
| 732 | } |
| 733 | |
| 734 | /* Check for writability */ |
| 735 | if (FD_ISSET(socket->m_fd, &writefds)) |
| 736 | { |
| 737 | if (socket->m_establishing && !socket->m_server) |
| 738 | { |
| 739 | result |= (GSOCK_CONNECTION_FLAG & flags); |
| 740 | socket->m_establishing = FALSE; |
| 741 | socket->m_detected |= GSOCK_CONNECTION_FLAG; |
| 742 | } |
| 743 | else |
| 744 | result |= (GSOCK_OUTPUT_FLAG & flags); |
| 745 | } |
| 746 | |
| 747 | /* Check for exceptions and errors */ |
| 748 | if (FD_ISSET(socket->m_fd, &exceptfds)) |
| 749 | { |
| 750 | result |= (GSOCK_LOST_FLAG & flags); |
| 751 | socket->m_establishing = FALSE; |
| 752 | socket->m_detected = GSOCK_LOST_FLAG; |
| 753 | } |
| 754 | |
| 755 | return result; |
| 756 | |
| 757 | #else |
| 758 | |
| 759 | assert(socket != NULL); |
| 760 | return flags & socket->m_detected; |
| 761 | |
| 762 | #endif /* !wxUSE_GUI */ |
| 763 | } |
| 764 | |
| 765 | /* Attributes */ |
| 766 | |
| 767 | /* GSocket_SetNonBlocking: |
| 768 | * Sets the socket to non-blocking mode. All IO calls will return |
| 769 | * immediately. |
| 770 | */ |
| 771 | void GSocket_SetNonBlocking(GSocket *socket, int non_block) |
| 772 | { |
| 773 | assert(socket != NULL); |
| 774 | |
| 775 | socket->m_non_blocking = non_block; |
| 776 | } |
| 777 | |
| 778 | /* GSocket_SetTimeout: |
| 779 | * Sets the timeout for blocking calls. Time is expressed in |
| 780 | * milliseconds. |
| 781 | */ |
| 782 | void GSocket_SetTimeout(GSocket *socket, unsigned long millis) |
| 783 | { |
| 784 | assert(socket != NULL); |
| 785 | |
| 786 | socket->m_timeout.tv_sec = (millis / 1000); |
| 787 | socket->m_timeout.tv_usec = (millis % 1000) * 1000; |
| 788 | } |
| 789 | |
| 790 | /* GSocket_GetError: |
| 791 | * Returns the last error occured for this socket. Note that successful |
| 792 | * operations do not clear this back to GSOCK_NOERROR, so use it only |
| 793 | * after an error. |
| 794 | */ |
| 795 | GSocketError GSocket_GetError(GSocket *socket) |
| 796 | { |
| 797 | assert(socket != NULL); |
| 798 | |
| 799 | return socket->m_error; |
| 800 | } |
| 801 | |
| 802 | /* Callbacks */ |
| 803 | |
| 804 | /* GSOCK_INPUT: |
| 805 | * There is data to be read in the input buffer. If, after a read |
| 806 | * operation, there is still data available, the callback function will |
| 807 | * be called again. |
| 808 | * GSOCK_OUTPUT: |
| 809 | * The socket is available for writing. That is, the next write call |
| 810 | * won't block. This event is generated only once, when the connection is |
| 811 | * first established, and then only if a call failed with GSOCK_WOULDBLOCK, |
| 812 | * when the output buffer empties again. This means that the app should |
| 813 | * assume that it can write since the first OUTPUT event, and no more |
| 814 | * OUTPUT events will be generated unless an error occurs. |
| 815 | * GSOCK_CONNECTION: |
| 816 | * Connection succesfully established, for client sockets, or incoming |
| 817 | * client connection, for server sockets. Wait for this event (also watch |
| 818 | * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call. |
| 819 | * GSOCK_LOST: |
| 820 | * The connection is lost (or a connection request failed); this could |
| 821 | * be due to a failure, or due to the peer closing it gracefully. |
| 822 | */ |
| 823 | |
| 824 | /* GSocket_SetCallback: |
| 825 | * Enables the callbacks specified by 'flags'. Note that 'flags' |
| 826 | * may be a combination of flags OR'ed toghether, so the same |
| 827 | * callback function can be made to accept different events. |
| 828 | * The callback function must have the following prototype: |
| 829 | * |
| 830 | * void function(GSocket *socket, GSocketEvent event, char *cdata) |
| 831 | */ |
| 832 | void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags, |
| 833 | GSocketCallback callback, char *cdata) |
| 834 | { |
| 835 | int count; |
| 836 | |
| 837 | assert(socket != NULL); |
| 838 | |
| 839 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 840 | { |
| 841 | if ((flags & (1 << count)) != 0) |
| 842 | { |
| 843 | socket->m_cbacks[count] = callback; |
| 844 | socket->m_data[count] = cdata; |
| 845 | } |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | /* GSocket_UnsetCallback: |
| 850 | * Disables all callbacks specified by 'flags', which may be a |
| 851 | * combination of flags OR'ed toghether. |
| 852 | */ |
| 853 | void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags) |
| 854 | { |
| 855 | int count; |
| 856 | |
| 857 | assert(socket != NULL); |
| 858 | |
| 859 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 860 | { |
| 861 | if ((flags & (1 << count)) != 0) |
| 862 | { |
| 863 | socket->m_cbacks[count] = NULL; |
| 864 | socket->m_data[count] = NULL; |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | /* Internals (IO) */ |
| 870 | |
| 871 | /* _GSocket_Input_Timeout: |
| 872 | * For blocking sockets, wait until data is available or |
| 873 | * until timeout ellapses. |
| 874 | */ |
| 875 | GSocketError _GSocket_Input_Timeout(GSocket *socket) |
| 876 | { |
| 877 | fd_set readfds; |
| 878 | |
| 879 | if (!socket->m_non_blocking) |
| 880 | { |
| 881 | FD_ZERO(&readfds); |
| 882 | FD_SET(socket->m_fd, &readfds); |
| 883 | if (select(0, &readfds, NULL, NULL, &socket->m_timeout) == 0) |
| 884 | { |
| 885 | socket->m_error = GSOCK_TIMEDOUT; |
| 886 | return GSOCK_TIMEDOUT; |
| 887 | } |
| 888 | } |
| 889 | return GSOCK_NOERROR; |
| 890 | } |
| 891 | |
| 892 | /* _GSocket_Output_Timeout: |
| 893 | * For blocking sockets, wait until data can be sent without |
| 894 | * blocking or until timeout ellapses. |
| 895 | */ |
| 896 | GSocketError _GSocket_Output_Timeout(GSocket *socket) |
| 897 | { |
| 898 | fd_set writefds; |
| 899 | |
| 900 | if (!socket->m_non_blocking) |
| 901 | { |
| 902 | FD_ZERO(&writefds); |
| 903 | FD_SET(socket->m_fd, &writefds); |
| 904 | if (select(0, NULL, &writefds, NULL, &socket->m_timeout) == 0) |
| 905 | { |
| 906 | socket->m_error = GSOCK_TIMEDOUT; |
| 907 | return GSOCK_TIMEDOUT; |
| 908 | } |
| 909 | } |
| 910 | return GSOCK_NOERROR; |
| 911 | } |
| 912 | |
| 913 | /* _GSocket_Connect_Timeout: |
| 914 | * For blocking sockets, wait until the connection is |
| 915 | * established or fails, or until timeout ellapses. |
| 916 | */ |
| 917 | GSocketError _GSocket_Connect_Timeout(GSocket *socket) |
| 918 | { |
| 919 | fd_set writefds; |
| 920 | fd_set exceptfds; |
| 921 | |
| 922 | FD_ZERO(&writefds); |
| 923 | FD_ZERO(&exceptfds); |
| 924 | FD_SET(socket->m_fd, &writefds); |
| 925 | FD_SET(socket->m_fd, &exceptfds); |
| 926 | if (select(0, NULL, &writefds, &exceptfds, &socket->m_timeout) == 0) |
| 927 | { |
| 928 | socket->m_error = GSOCK_TIMEDOUT; |
| 929 | return GSOCK_TIMEDOUT; |
| 930 | } |
| 931 | if (!FD_ISSET(socket->m_fd, &writefds)) |
| 932 | { |
| 933 | socket->m_error = GSOCK_IOERR; |
| 934 | return GSOCK_IOERR; |
| 935 | } |
| 936 | |
| 937 | return GSOCK_NOERROR; |
| 938 | } |
| 939 | |
| 940 | int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size) |
| 941 | { |
| 942 | return recv(socket->m_fd, buffer, size, 0); |
| 943 | } |
| 944 | |
| 945 | int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size) |
| 946 | { |
| 947 | struct sockaddr from; |
| 948 | SOCKLEN_T fromlen = sizeof(from); |
| 949 | int ret; |
| 950 | GSocketError err; |
| 951 | |
| 952 | ret = recvfrom(socket->m_fd, buffer, size, 0, &from, &fromlen); |
| 953 | |
| 954 | if (ret == SOCKET_ERROR) |
| 955 | return SOCKET_ERROR; |
| 956 | |
| 957 | /* Translate a system address into a GSocket address */ |
| 958 | if (!socket->m_peer) |
| 959 | { |
| 960 | socket->m_peer = GAddress_new(); |
| 961 | if (!socket->m_peer) |
| 962 | { |
| 963 | socket->m_error = GSOCK_MEMERR; |
| 964 | return -1; |
| 965 | } |
| 966 | } |
| 967 | err = _GAddress_translate_from(socket->m_peer, &from, fromlen); |
| 968 | if (err != GSOCK_NOERROR) |
| 969 | { |
| 970 | GAddress_destroy(socket->m_peer); |
| 971 | socket->m_peer = NULL; |
| 972 | socket->m_error = err; |
| 973 | return -1; |
| 974 | } |
| 975 | |
| 976 | return ret; |
| 977 | } |
| 978 | |
| 979 | int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size) |
| 980 | { |
| 981 | return send(socket->m_fd, buffer, size, 0); |
| 982 | } |
| 983 | |
| 984 | int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size) |
| 985 | { |
| 986 | struct sockaddr *addr; |
| 987 | int len, ret; |
| 988 | GSocketError err; |
| 989 | |
| 990 | if (!socket->m_peer) |
| 991 | { |
| 992 | socket->m_error = GSOCK_INVADDR; |
| 993 | return -1; |
| 994 | } |
| 995 | |
| 996 | err = _GAddress_translate_to(socket->m_peer, &addr, &len); |
| 997 | if (err != GSOCK_NOERROR) |
| 998 | { |
| 999 | socket->m_error = err; |
| 1000 | return -1; |
| 1001 | } |
| 1002 | |
| 1003 | ret = sendto(socket->m_fd, buffer, size, 0, addr, len); |
| 1004 | |
| 1005 | /* Frees memory allocated by _GAddress_translate_to */ |
| 1006 | free(addr); |
| 1007 | |
| 1008 | return ret; |
| 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | /* |
| 1013 | * ------------------------------------------------------------------------- |
| 1014 | * GAddress |
| 1015 | * ------------------------------------------------------------------------- |
| 1016 | */ |
| 1017 | |
| 1018 | /* CHECK_ADDRESS verifies that the current address family is either |
| 1019 | * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it |
| 1020 | * initalizes it to be a GSOCK_*family*. In other cases, it returns |
| 1021 | * an appropiate error code. |
| 1022 | * |
| 1023 | * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error. |
| 1024 | */ |
| 1025 | #define CHECK_ADDRESS(address, family) \ |
| 1026 | { \ |
| 1027 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1028 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1029 | return address->m_error; \ |
| 1030 | if (address->m_family != GSOCK_##family) \ |
| 1031 | { \ |
| 1032 | address->m_error = GSOCK_INVADDR; \ |
| 1033 | return GSOCK_INVADDR; \ |
| 1034 | } \ |
| 1035 | } |
| 1036 | |
| 1037 | #define CHECK_ADDRESS_RETVAL(address, family, retval) \ |
| 1038 | { \ |
| 1039 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1040 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1041 | return retval; \ |
| 1042 | if (address->m_family != GSOCK_##family) \ |
| 1043 | { \ |
| 1044 | address->m_error = GSOCK_INVADDR; \ |
| 1045 | return retval; \ |
| 1046 | } \ |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | GAddress *GAddress_new(void) |
| 1051 | { |
| 1052 | GAddress *address; |
| 1053 | |
| 1054 | if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1055 | return NULL; |
| 1056 | |
| 1057 | address->m_family = GSOCK_NOFAMILY; |
| 1058 | address->m_addr = NULL; |
| 1059 | address->m_len = 0; |
| 1060 | |
| 1061 | return address; |
| 1062 | } |
| 1063 | |
| 1064 | GAddress *GAddress_copy(GAddress *address) |
| 1065 | { |
| 1066 | GAddress *addr2; |
| 1067 | |
| 1068 | assert(address != NULL); |
| 1069 | |
| 1070 | if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1071 | return NULL; |
| 1072 | |
| 1073 | memcpy(addr2, address, sizeof(GAddress)); |
| 1074 | |
| 1075 | if (address->m_addr) |
| 1076 | { |
| 1077 | addr2->m_addr = (struct sockaddr *) malloc(addr2->m_len); |
| 1078 | if (addr2->m_addr == NULL) |
| 1079 | { |
| 1080 | free(addr2); |
| 1081 | return NULL; |
| 1082 | } |
| 1083 | memcpy(addr2->m_addr, address->m_addr, addr2->m_len); |
| 1084 | } |
| 1085 | |
| 1086 | return addr2; |
| 1087 | } |
| 1088 | |
| 1089 | void GAddress_destroy(GAddress *address) |
| 1090 | { |
| 1091 | assert(address != NULL); |
| 1092 | |
| 1093 | if (address->m_addr) |
| 1094 | free(address->m_addr); |
| 1095 | |
| 1096 | free(address); |
| 1097 | } |
| 1098 | |
| 1099 | void GAddress_SetFamily(GAddress *address, GAddressType type) |
| 1100 | { |
| 1101 | assert(address != NULL); |
| 1102 | |
| 1103 | address->m_family = type; |
| 1104 | } |
| 1105 | |
| 1106 | GAddressType GAddress_GetFamily(GAddress *address) |
| 1107 | { |
| 1108 | assert(address != NULL); |
| 1109 | |
| 1110 | return address->m_family; |
| 1111 | } |
| 1112 | |
| 1113 | GSocketError _GAddress_translate_from(GAddress *address, |
| 1114 | struct sockaddr *addr, int len) |
| 1115 | { |
| 1116 | address->m_realfamily = addr->sa_family; |
| 1117 | switch (addr->sa_family) |
| 1118 | { |
| 1119 | case AF_INET: |
| 1120 | address->m_family = GSOCK_INET; |
| 1121 | break; |
| 1122 | case AF_UNIX: |
| 1123 | address->m_family = GSOCK_UNIX; |
| 1124 | break; |
| 1125 | #ifdef AF_INET6 |
| 1126 | case AF_INET6: |
| 1127 | address->m_family = GSOCK_INET6; |
| 1128 | break; |
| 1129 | #endif |
| 1130 | default: |
| 1131 | { |
| 1132 | address->m_error = GSOCK_INVOP; |
| 1133 | return GSOCK_INVOP; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | if (address->m_addr) |
| 1138 | free(address->m_addr); |
| 1139 | |
| 1140 | address->m_len = len; |
| 1141 | address->m_addr = (struct sockaddr *) malloc(len); |
| 1142 | |
| 1143 | if (address->m_addr == NULL) |
| 1144 | { |
| 1145 | address->m_error = GSOCK_MEMERR; |
| 1146 | return GSOCK_MEMERR; |
| 1147 | } |
| 1148 | memcpy(address->m_addr, addr, len); |
| 1149 | |
| 1150 | return GSOCK_NOERROR; |
| 1151 | } |
| 1152 | |
| 1153 | GSocketError _GAddress_translate_to(GAddress *address, |
| 1154 | struct sockaddr **addr, int *len) |
| 1155 | { |
| 1156 | if (!address->m_addr) |
| 1157 | { |
| 1158 | address->m_error = GSOCK_INVADDR; |
| 1159 | return GSOCK_INVADDR; |
| 1160 | } |
| 1161 | |
| 1162 | *len = address->m_len; |
| 1163 | *addr = (struct sockaddr *) malloc(address->m_len); |
| 1164 | if (*addr == NULL) |
| 1165 | { |
| 1166 | address->m_error = GSOCK_MEMERR; |
| 1167 | return GSOCK_MEMERR; |
| 1168 | } |
| 1169 | |
| 1170 | memcpy(*addr, address->m_addr, address->m_len); |
| 1171 | return GSOCK_NOERROR; |
| 1172 | } |
| 1173 | |
| 1174 | /* |
| 1175 | * ------------------------------------------------------------------------- |
| 1176 | * Internet address family |
| 1177 | * ------------------------------------------------------------------------- |
| 1178 | */ |
| 1179 | |
| 1180 | GSocketError _GAddress_Init_INET(GAddress *address) |
| 1181 | { |
| 1182 | address->m_len = sizeof(struct sockaddr_in); |
| 1183 | address->m_addr = (struct sockaddr *) malloc(address->m_len); |
| 1184 | if (address->m_addr == NULL) |
| 1185 | { |
| 1186 | address->m_error = GSOCK_MEMERR; |
| 1187 | return GSOCK_MEMERR; |
| 1188 | } |
| 1189 | |
| 1190 | address->m_family = GSOCK_INET; |
| 1191 | address->m_realfamily = PF_INET; |
| 1192 | ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; |
| 1193 | ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; |
| 1194 | |
| 1195 | return GSOCK_NOERROR; |
| 1196 | } |
| 1197 | |
| 1198 | GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) |
| 1199 | { |
| 1200 | struct hostent *he; |
| 1201 | struct in_addr *addr; |
| 1202 | |
| 1203 | assert(address != NULL); |
| 1204 | |
| 1205 | CHECK_ADDRESS(address, INET); |
| 1206 | |
| 1207 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1208 | |
| 1209 | addr->s_addr = inet_addr(hostname); |
| 1210 | |
| 1211 | /* If it is a numeric host name, convert it now */ |
| 1212 | if (addr->s_addr == INADDR_NONE) |
| 1213 | { |
| 1214 | struct in_addr *array_addr; |
| 1215 | |
| 1216 | /* It is a real name, we solve it */ |
| 1217 | if ((he = gethostbyname(hostname)) == NULL) |
| 1218 | { |
| 1219 | /* addr->s_addr = INADDR_NONE just done by inet_addr() above */ |
| 1220 | address->m_error = GSOCK_NOHOST; |
| 1221 | return GSOCK_NOHOST; |
| 1222 | } |
| 1223 | array_addr = (struct in_addr *) *(he->h_addr_list); |
| 1224 | addr->s_addr = array_addr[0].s_addr; |
| 1225 | } |
| 1226 | return GSOCK_NOERROR; |
| 1227 | } |
| 1228 | |
| 1229 | GSocketError GAddress_INET_SetAnyAddress(GAddress *address) |
| 1230 | { |
| 1231 | return GAddress_INET_SetHostAddress(address, INADDR_ANY); |
| 1232 | } |
| 1233 | |
| 1234 | GSocketError GAddress_INET_SetHostAddress(GAddress *address, |
| 1235 | unsigned long hostaddr) |
| 1236 | { |
| 1237 | struct in_addr *addr; |
| 1238 | |
| 1239 | assert(address != NULL); |
| 1240 | |
| 1241 | CHECK_ADDRESS(address, INET); |
| 1242 | |
| 1243 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1244 | addr->s_addr = hostaddr; |
| 1245 | |
| 1246 | return GSOCK_NOERROR; |
| 1247 | } |
| 1248 | |
| 1249 | GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, |
| 1250 | const char *protocol) |
| 1251 | { |
| 1252 | struct servent *se; |
| 1253 | struct sockaddr_in *addr; |
| 1254 | |
| 1255 | assert(address != NULL); |
| 1256 | CHECK_ADDRESS(address, INET); |
| 1257 | |
| 1258 | if (!port) |
| 1259 | { |
| 1260 | address->m_error = GSOCK_INVPORT; |
| 1261 | return GSOCK_INVPORT; |
| 1262 | } |
| 1263 | |
| 1264 | se = getservbyname(port, protocol); |
| 1265 | if (!se) |
| 1266 | { |
| 1267 | if (isdigit(port[0])) |
| 1268 | { |
| 1269 | int port_int; |
| 1270 | |
| 1271 | port_int = atoi(port); |
| 1272 | addr = (struct sockaddr_in *)address->m_addr; |
| 1273 | addr->sin_port = htons((u_short) port_int); |
| 1274 | return GSOCK_NOERROR; |
| 1275 | } |
| 1276 | |
| 1277 | address->m_error = GSOCK_INVPORT; |
| 1278 | return GSOCK_INVPORT; |
| 1279 | } |
| 1280 | |
| 1281 | addr = (struct sockaddr_in *)address->m_addr; |
| 1282 | addr->sin_port = se->s_port; |
| 1283 | |
| 1284 | return GSOCK_NOERROR; |
| 1285 | } |
| 1286 | |
| 1287 | GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port) |
| 1288 | { |
| 1289 | struct sockaddr_in *addr; |
| 1290 | |
| 1291 | assert(address != NULL); |
| 1292 | CHECK_ADDRESS(address, INET); |
| 1293 | |
| 1294 | addr = (struct sockaddr_in *)address->m_addr; |
| 1295 | addr->sin_port = htons(port); |
| 1296 | |
| 1297 | return GSOCK_NOERROR; |
| 1298 | } |
| 1299 | |
| 1300 | GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf) |
| 1301 | { |
| 1302 | struct hostent *he; |
| 1303 | char *addr_buf; |
| 1304 | struct sockaddr_in *addr; |
| 1305 | |
| 1306 | assert(address != NULL); |
| 1307 | CHECK_ADDRESS(address, INET); |
| 1308 | |
| 1309 | addr = (struct sockaddr_in *)address->m_addr; |
| 1310 | addr_buf = (char *)&(addr->sin_addr); |
| 1311 | |
| 1312 | he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET); |
| 1313 | if (he == NULL) |
| 1314 | { |
| 1315 | address->m_error = GSOCK_NOHOST; |
| 1316 | return GSOCK_NOHOST; |
| 1317 | } |
| 1318 | |
| 1319 | strncpy(hostname, he->h_name, sbuf); |
| 1320 | |
| 1321 | return GSOCK_NOERROR; |
| 1322 | } |
| 1323 | |
| 1324 | unsigned long GAddress_INET_GetHostAddress(GAddress *address) |
| 1325 | { |
| 1326 | struct sockaddr_in *addr; |
| 1327 | |
| 1328 | assert(address != NULL); |
| 1329 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 1330 | |
| 1331 | addr = (struct sockaddr_in *)address->m_addr; |
| 1332 | |
| 1333 | return addr->sin_addr.s_addr; |
| 1334 | } |
| 1335 | |
| 1336 | unsigned short GAddress_INET_GetPort(GAddress *address) |
| 1337 | { |
| 1338 | struct sockaddr_in *addr; |
| 1339 | |
| 1340 | assert(address != NULL); |
| 1341 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 1342 | |
| 1343 | addr = (struct sockaddr_in *)address->m_addr; |
| 1344 | return ntohs(addr->sin_port); |
| 1345 | } |
| 1346 | |
| 1347 | /* |
| 1348 | * ------------------------------------------------------------------------- |
| 1349 | * Unix address family |
| 1350 | * ------------------------------------------------------------------------- |
| 1351 | */ |
| 1352 | |
| 1353 | GSocketError _GAddress_Init_UNIX(GAddress *address) |
| 1354 | { |
| 1355 | assert (address != NULL); |
| 1356 | address->m_error = GSOCK_INVADDR; |
| 1357 | return GSOCK_INVADDR; |
| 1358 | } |
| 1359 | |
| 1360 | GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path) |
| 1361 | { |
| 1362 | assert (address != NULL); |
| 1363 | address->m_error = GSOCK_INVADDR; |
| 1364 | return GSOCK_INVADDR; |
| 1365 | } |
| 1366 | |
| 1367 | GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) |
| 1368 | { |
| 1369 | assert (address != NULL); |
| 1370 | address->m_error = GSOCK_INVADDR; |
| 1371 | return GSOCK_INVADDR; |
| 1372 | } |
| 1373 | |
| 1374 | #else /* !wxUSE_SOCKETS */ |
| 1375 | |
| 1376 | /* |
| 1377 | * Translation unit shouldn't be empty, so include this typedef to make the |
| 1378 | * compiler (VC++ 6.0, for example) happy |
| 1379 | */ |
| 1380 | typedef (*wxDummy)(); |
| 1381 | |
| 1382 | #endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */ |