| 1 | /* ------------------------------------------------------------------------- |
| 2 | * Project: GSocket (Generic Socket) |
| 3 | * Name: gsocket.cpp |
| 4 | * Author: Guillermo Rodriguez Garcia <guille@iies.es> |
| 5 | * Purpose: GSocket main MSW file |
| 6 | * Licence: The wxWindows licence |
| 7 | * CVSID: $Id$ |
| 8 | * ------------------------------------------------------------------------- |
| 9 | */ |
| 10 | |
| 11 | // For compilers that support precompilation, includes "wx.h". |
| 12 | #include "wx/wxprec.h" |
| 13 | |
| 14 | #ifdef __BORLANDC__ |
| 15 | #pragma hdrstop |
| 16 | #endif |
| 17 | |
| 18 | #ifdef _MSC_VER |
| 19 | /* RPCNOTIFICATION_ROUTINE in rasasync.h (included from winsock.h), |
| 20 | * warning: conditional expression is constant. |
| 21 | */ |
| 22 | # pragma warning(disable:4115) |
| 23 | /* FD_SET, |
| 24 | * warning: named type definition in parentheses. |
| 25 | */ |
| 26 | # pragma warning(disable:4127) |
| 27 | /* GAddress_UNIX_GetPath, |
| 28 | * warning: unreferenced formal parameter. |
| 29 | */ |
| 30 | # pragma warning(disable:4100) |
| 31 | |
| 32 | #ifdef __WXWINCE__ |
| 33 | /* windows.h results in tons of warnings at max warning level */ |
| 34 | # ifdef _MSC_VER |
| 35 | # pragma warning(push, 1) |
| 36 | # endif |
| 37 | # include <windows.h> |
| 38 | # ifdef _MSC_VER |
| 39 | # pragma warning(pop) |
| 40 | # pragma warning(disable:4514) |
| 41 | # endif |
| 42 | #endif |
| 43 | |
| 44 | #endif /* _MSC_VER */ |
| 45 | |
| 46 | #include <winsock.h> |
| 47 | |
| 48 | #ifndef __GSOCKET_STANDALONE__ |
| 49 | # include "wx/platform.h" |
| 50 | # include "wx/setup.h" |
| 51 | #endif |
| 52 | |
| 53 | #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) |
| 54 | |
| 55 | #ifndef __GSOCKET_STANDALONE__ |
| 56 | # include "wx/msw/gsockmsw.h" |
| 57 | # include "wx/gsocket.h" |
| 58 | #else |
| 59 | # include "gsockmsw.h" |
| 60 | # include "gsocket.h" |
| 61 | #endif /* __GSOCKET_STANDALONE__ */ |
| 62 | |
| 63 | #ifndef __WXWINCE__ |
| 64 | #include <assert.h> |
| 65 | #else |
| 66 | #define assert(x) |
| 67 | #ifndef isdigit |
| 68 | #define isdigit(x) (x > 47 && x < 58) |
| 69 | #endif |
| 70 | #include "wx/msw/wince/net.h" |
| 71 | #endif |
| 72 | |
| 73 | #include <string.h> |
| 74 | #include <stdio.h> |
| 75 | #include <stdlib.h> |
| 76 | #include <stddef.h> |
| 77 | #include <ctype.h> |
| 78 | |
| 79 | /* if we use configure for MSW SOCKLEN_T will be already defined */ |
| 80 | #ifndef SOCKLEN_T |
| 81 | # define SOCKLEN_T int |
| 82 | #endif |
| 83 | |
| 84 | /* Table of GUI-related functions. We must call them indirectly because |
| 85 | * of wxBase and GUI separation: */ |
| 86 | |
| 87 | static GSocketGUIFunctionsTable *gs_gui_functions; |
| 88 | |
| 89 | class GSocketGUIFunctionsTableNull: public GSocketGUIFunctionsTable |
| 90 | { |
| 91 | public: |
| 92 | virtual bool OnInit(); |
| 93 | virtual void OnExit(); |
| 94 | virtual bool CanUseEventLoop(); |
| 95 | virtual bool Init_Socket(GSocket *socket); |
| 96 | virtual void Destroy_Socket(GSocket *socket); |
| 97 | virtual void Enable_Events(GSocket *socket); |
| 98 | virtual void Disable_Events(GSocket *socket); |
| 99 | }; |
| 100 | |
| 101 | bool GSocketGUIFunctionsTableNull::OnInit() |
| 102 | { return true; } |
| 103 | void GSocketGUIFunctionsTableNull::OnExit() |
| 104 | {} |
| 105 | bool GSocketGUIFunctionsTableNull::CanUseEventLoop() |
| 106 | { return false; } |
| 107 | bool GSocketGUIFunctionsTableNull::Init_Socket(GSocket *WXUNUSED(socket)) |
| 108 | { return true; } |
| 109 | void GSocketGUIFunctionsTableNull::Destroy_Socket(GSocket *WXUNUSED(socket)) |
| 110 | {} |
| 111 | void GSocketGUIFunctionsTableNull::Enable_Events(GSocket *WXUNUSED(socket)) |
| 112 | {} |
| 113 | void GSocketGUIFunctionsTableNull::Disable_Events(GSocket *WXUNUSED(socket)) |
| 114 | {} |
| 115 | /* Global initialisers */ |
| 116 | |
| 117 | void GSocket_SetGUIFunctions(GSocketGUIFunctionsTable *guifunc) |
| 118 | { |
| 119 | gs_gui_functions = guifunc; |
| 120 | } |
| 121 | |
| 122 | int GSocket_Init(void) |
| 123 | { |
| 124 | WSADATA wsaData; |
| 125 | |
| 126 | if (!gs_gui_functions) |
| 127 | { |
| 128 | static GSocketGUIFunctionsTableNull table; |
| 129 | gs_gui_functions = &table; |
| 130 | } |
| 131 | if ( !gs_gui_functions->OnInit() ) |
| 132 | { |
| 133 | return 0; |
| 134 | } |
| 135 | |
| 136 | /* Initialize WinSocket */ |
| 137 | return (WSAStartup((1 << 8) | 1, &wsaData) == 0); |
| 138 | } |
| 139 | |
| 140 | void GSocket_Cleanup(void) |
| 141 | { |
| 142 | if (gs_gui_functions) |
| 143 | { |
| 144 | gs_gui_functions->OnExit(); |
| 145 | } |
| 146 | |
| 147 | /* Cleanup WinSocket */ |
| 148 | WSACleanup(); |
| 149 | } |
| 150 | |
| 151 | /* Constructors / Destructors for GSocket */ |
| 152 | |
| 153 | GSocket::GSocket() |
| 154 | { |
| 155 | int i; |
| 156 | |
| 157 | m_fd = INVALID_SOCKET; |
| 158 | for (i = 0; i < GSOCK_MAX_EVENT; i++) |
| 159 | { |
| 160 | m_cbacks[i] = NULL; |
| 161 | } |
| 162 | m_detected = 0; |
| 163 | m_local = NULL; |
| 164 | m_peer = NULL; |
| 165 | m_error = GSOCK_NOERROR; |
| 166 | m_server = false; |
| 167 | m_stream = true; |
| 168 | m_non_blocking = false; |
| 169 | m_timeout.tv_sec = 10 * 60; /* 10 minutes */ |
| 170 | m_timeout.tv_usec = 0; |
| 171 | m_establishing = false; |
| 172 | m_reusable = false; |
| 173 | |
| 174 | assert(gs_gui_functions); |
| 175 | /* Per-socket GUI-specific initialization */ |
| 176 | m_ok = gs_gui_functions->Init_Socket(this); |
| 177 | } |
| 178 | |
| 179 | void GSocket::Close() |
| 180 | { |
| 181 | gs_gui_functions->Disable_Events(this); |
| 182 | closesocket(m_fd); |
| 183 | m_fd = INVALID_SOCKET; |
| 184 | } |
| 185 | |
| 186 | GSocket::~GSocket() |
| 187 | { |
| 188 | assert(this); |
| 189 | |
| 190 | /* Per-socket GUI-specific cleanup */ |
| 191 | gs_gui_functions->Destroy_Socket(this); |
| 192 | |
| 193 | /* Check that the socket is really shutdowned */ |
| 194 | if (m_fd != INVALID_SOCKET) |
| 195 | Shutdown(); |
| 196 | |
| 197 | /* Destroy private addresses */ |
| 198 | if (m_local) |
| 199 | GAddress_destroy(m_local); |
| 200 | |
| 201 | if (m_peer) |
| 202 | GAddress_destroy(m_peer); |
| 203 | } |
| 204 | |
| 205 | /* GSocket_Shutdown: |
| 206 | * Disallow further read/write operations on this socket, close |
| 207 | * the fd and disable all callbacks. |
| 208 | */ |
| 209 | void GSocket::Shutdown() |
| 210 | { |
| 211 | int evt; |
| 212 | |
| 213 | assert(this); |
| 214 | |
| 215 | /* If socket has been created, shutdown it */ |
| 216 | if (m_fd != INVALID_SOCKET) |
| 217 | { |
| 218 | shutdown(m_fd, 2); |
| 219 | Close(); |
| 220 | } |
| 221 | |
| 222 | /* Disable GUI callbacks */ |
| 223 | for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) |
| 224 | m_cbacks[evt] = NULL; |
| 225 | |
| 226 | m_detected = GSOCK_LOST_FLAG; |
| 227 | } |
| 228 | |
| 229 | /* Address handling */ |
| 230 | |
| 231 | /* GSocket_SetLocal: |
| 232 | * GSocket_GetLocal: |
| 233 | * GSocket_SetPeer: |
| 234 | * GSocket_GetPeer: |
| 235 | * Set or get the local or peer address for this socket. The 'set' |
| 236 | * functions return GSOCK_NOERROR on success, an error code otherwise. |
| 237 | * The 'get' functions return a pointer to a GAddress object on success, |
| 238 | * or NULL otherwise, in which case they set the error code of the |
| 239 | * corresponding GSocket. |
| 240 | * |
| 241 | * Error codes: |
| 242 | * GSOCK_INVSOCK - the socket is not valid. |
| 243 | * GSOCK_INVADDR - the address is not valid. |
| 244 | */ |
| 245 | GSocketError GSocket::SetLocal(GAddress *address) |
| 246 | { |
| 247 | assert(this); |
| 248 | |
| 249 | /* the socket must be initialized, or it must be a server */ |
| 250 | if (m_fd != INVALID_SOCKET && !m_server) |
| 251 | { |
| 252 | m_error = GSOCK_INVSOCK; |
| 253 | return GSOCK_INVSOCK; |
| 254 | } |
| 255 | |
| 256 | /* check address */ |
| 257 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 258 | { |
| 259 | m_error = GSOCK_INVADDR; |
| 260 | return GSOCK_INVADDR; |
| 261 | } |
| 262 | |
| 263 | if (m_local) |
| 264 | GAddress_destroy(m_local); |
| 265 | |
| 266 | m_local = GAddress_copy(address); |
| 267 | |
| 268 | return GSOCK_NOERROR; |
| 269 | } |
| 270 | |
| 271 | GSocketError GSocket::SetPeer(GAddress *address) |
| 272 | { |
| 273 | assert(this); |
| 274 | |
| 275 | /* check address */ |
| 276 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 277 | { |
| 278 | m_error = GSOCK_INVADDR; |
| 279 | return GSOCK_INVADDR; |
| 280 | } |
| 281 | |
| 282 | if (m_peer) |
| 283 | GAddress_destroy(m_peer); |
| 284 | |
| 285 | m_peer = GAddress_copy(address); |
| 286 | |
| 287 | return GSOCK_NOERROR; |
| 288 | } |
| 289 | |
| 290 | GAddress *GSocket::GetLocal() |
| 291 | { |
| 292 | GAddress *address; |
| 293 | struct sockaddr addr; |
| 294 | SOCKLEN_T size = sizeof(addr); |
| 295 | GSocketError err; |
| 296 | |
| 297 | assert(this); |
| 298 | |
| 299 | /* try to get it from the m_local var first */ |
| 300 | if (m_local) |
| 301 | return GAddress_copy(m_local); |
| 302 | |
| 303 | /* else, if the socket is initialized, try getsockname */ |
| 304 | if (m_fd == INVALID_SOCKET) |
| 305 | { |
| 306 | m_error = GSOCK_INVSOCK; |
| 307 | return NULL; |
| 308 | } |
| 309 | |
| 310 | if (getsockname(m_fd, &addr, &size) == SOCKET_ERROR) |
| 311 | { |
| 312 | m_error = GSOCK_IOERR; |
| 313 | return NULL; |
| 314 | } |
| 315 | |
| 316 | /* got a valid address from getsockname, create a GAddress object */ |
| 317 | if ((address = GAddress_new()) == NULL) |
| 318 | { |
| 319 | m_error = GSOCK_MEMERR; |
| 320 | return NULL; |
| 321 | } |
| 322 | |
| 323 | if ((err = _GAddress_translate_from(address, &addr, size)) != GSOCK_NOERROR) |
| 324 | { |
| 325 | GAddress_destroy(address); |
| 326 | m_error = err; |
| 327 | return NULL; |
| 328 | } |
| 329 | |
| 330 | return address; |
| 331 | } |
| 332 | |
| 333 | GAddress *GSocket::GetPeer() |
| 334 | { |
| 335 | assert(this); |
| 336 | |
| 337 | /* try to get it from the m_peer var */ |
| 338 | if (m_peer) |
| 339 | return GAddress_copy(m_peer); |
| 340 | |
| 341 | return NULL; |
| 342 | } |
| 343 | |
| 344 | /* Server specific parts */ |
| 345 | |
| 346 | /* GSocket_SetServer: |
| 347 | * Sets up this socket as a server. The local address must have been |
| 348 | * set with GSocket_SetLocal() before GSocket_SetServer() is called. |
| 349 | * Returns GSOCK_NOERROR on success, one of the following otherwise: |
| 350 | * |
| 351 | * Error codes: |
| 352 | * GSOCK_INVSOCK - the socket is in use. |
| 353 | * GSOCK_INVADDR - the local address has not been set. |
| 354 | * GSOCK_IOERR - low-level error. |
| 355 | */ |
| 356 | GSocketError GSocket::SetServer() |
| 357 | { |
| 358 | u_long arg = 1; |
| 359 | |
| 360 | assert(this); |
| 361 | |
| 362 | /* must not be in use */ |
| 363 | if (m_fd != INVALID_SOCKET) |
| 364 | { |
| 365 | m_error = GSOCK_INVSOCK; |
| 366 | return GSOCK_INVSOCK; |
| 367 | } |
| 368 | |
| 369 | /* the local addr must have been set */ |
| 370 | if (!m_local) |
| 371 | { |
| 372 | m_error = GSOCK_INVADDR; |
| 373 | return GSOCK_INVADDR; |
| 374 | } |
| 375 | |
| 376 | /* Initialize all fields */ |
| 377 | m_server = true; |
| 378 | m_stream = true; |
| 379 | |
| 380 | /* Create the socket */ |
| 381 | m_fd = socket(m_local->m_realfamily, SOCK_STREAM, 0); |
| 382 | |
| 383 | if (m_fd == INVALID_SOCKET) |
| 384 | { |
| 385 | m_error = GSOCK_IOERR; |
| 386 | return GSOCK_IOERR; |
| 387 | } |
| 388 | |
| 389 | ioctlsocket(m_fd, FIONBIO, (u_long FAR *) &arg); |
| 390 | gs_gui_functions->Enable_Events(this); |
| 391 | |
| 392 | /* allow a socket to re-bind if the socket is in the TIME_WAIT |
| 393 | state after being previously closed. |
| 394 | */ |
| 395 | if (m_reusable) { |
| 396 | setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long)); |
| 397 | } |
| 398 | |
| 399 | /* Bind to the local address, |
| 400 | * retrieve the actual address bound, |
| 401 | * and listen up to 5 connections. |
| 402 | */ |
| 403 | if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) || |
| 404 | (getsockname(m_fd, |
| 405 | m_local->m_addr, |
| 406 | (SOCKLEN_T *)&m_local->m_len) != 0) || |
| 407 | (listen(m_fd, 5) != 0)) |
| 408 | { |
| 409 | Close(); |
| 410 | m_error = GSOCK_IOERR; |
| 411 | return GSOCK_IOERR; |
| 412 | } |
| 413 | |
| 414 | return GSOCK_NOERROR; |
| 415 | } |
| 416 | |
| 417 | /* GSocket_WaitConnection: |
| 418 | * Waits for an incoming client connection. Returns a pointer to |
| 419 | * a GSocket object, or NULL if there was an error, in which case |
| 420 | * the last error field will be updated for the calling GSocket. |
| 421 | * |
| 422 | * Error codes (set in the calling GSocket) |
| 423 | * GSOCK_INVSOCK - the socket is not valid or not a server. |
| 424 | * GSOCK_TIMEDOUT - timeout, no incoming connections. |
| 425 | * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking. |
| 426 | * GSOCK_MEMERR - couldn't allocate memory. |
| 427 | * GSOCK_IOERR - low-level error. |
| 428 | */ |
| 429 | GSocket *GSocket::WaitConnection() |
| 430 | { |
| 431 | GSocket *connection; |
| 432 | struct sockaddr from; |
| 433 | SOCKLEN_T fromlen = sizeof(from); |
| 434 | GSocketError err; |
| 435 | u_long arg = 1; |
| 436 | |
| 437 | assert(this); |
| 438 | |
| 439 | /* Reenable CONNECTION events */ |
| 440 | m_detected &= ~GSOCK_CONNECTION_FLAG; |
| 441 | |
| 442 | /* If the socket has already been created, we exit immediately */ |
| 443 | if (m_fd == INVALID_SOCKET || !m_server) |
| 444 | { |
| 445 | m_error = GSOCK_INVSOCK; |
| 446 | return NULL; |
| 447 | } |
| 448 | |
| 449 | /* Create a GSocket object for the new connection */ |
| 450 | connection = GSocket_new(); |
| 451 | |
| 452 | if (!connection) |
| 453 | { |
| 454 | m_error = GSOCK_MEMERR; |
| 455 | return NULL; |
| 456 | } |
| 457 | |
| 458 | /* Wait for a connection (with timeout) */ |
| 459 | if (Input_Timeout() == GSOCK_TIMEDOUT) |
| 460 | { |
| 461 | delete connection; |
| 462 | /* m_error set by _GSocket_Input_Timeout */ |
| 463 | return NULL; |
| 464 | } |
| 465 | |
| 466 | connection->m_fd = accept(m_fd, &from, &fromlen); |
| 467 | |
| 468 | if (connection->m_fd == INVALID_SOCKET) |
| 469 | { |
| 470 | if (WSAGetLastError() == WSAEWOULDBLOCK) |
| 471 | m_error = GSOCK_WOULDBLOCK; |
| 472 | else |
| 473 | m_error = GSOCK_IOERR; |
| 474 | |
| 475 | delete connection; |
| 476 | return NULL; |
| 477 | } |
| 478 | |
| 479 | /* Initialize all fields */ |
| 480 | connection->m_server = false; |
| 481 | connection->m_stream = true; |
| 482 | |
| 483 | /* Setup the peer address field */ |
| 484 | connection->m_peer = GAddress_new(); |
| 485 | if (!connection->m_peer) |
| 486 | { |
| 487 | delete connection; |
| 488 | m_error = GSOCK_MEMERR; |
| 489 | return NULL; |
| 490 | } |
| 491 | err = _GAddress_translate_from(connection->m_peer, &from, fromlen); |
| 492 | if (err != GSOCK_NOERROR) |
| 493 | { |
| 494 | GAddress_destroy(connection->m_peer); |
| 495 | delete connection; |
| 496 | m_error = err; |
| 497 | return NULL; |
| 498 | } |
| 499 | |
| 500 | ioctlsocket(connection->m_fd, FIONBIO, (u_long FAR *) &arg); |
| 501 | gs_gui_functions->Enable_Events(connection); |
| 502 | |
| 503 | return connection; |
| 504 | } |
| 505 | |
| 506 | /* GSocket_SetReusable: |
| 507 | * Simply sets the m_resuable flag on the socket. GSocket_SetServer will |
| 508 | * make the appropriate setsockopt() call. |
| 509 | * Implemented as a GSocket function because clients (ie, wxSocketServer) |
| 510 | * don't have access to the GSocket struct information. |
| 511 | * Returns true if the flag was set correctly, false if an error occured |
| 512 | * (ie, if the parameter was NULL) |
| 513 | */ |
| 514 | bool GSocket::SetReusable() |
| 515 | { |
| 516 | /* socket must not be null, and must not be in use/already bound */ |
| 517 | if (this && m_fd == INVALID_SOCKET) { |
| 518 | m_reusable = true; |
| 519 | return true; |
| 520 | } |
| 521 | return false; |
| 522 | } |
| 523 | |
| 524 | /* Client specific parts */ |
| 525 | |
| 526 | /* GSocket_Connect: |
| 527 | * For stream (connection oriented) sockets, GSocket_Connect() tries |
| 528 | * to establish a client connection to a server using the peer address |
| 529 | * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the |
| 530 | * connection has been succesfully established, or one of the error |
| 531 | * codes listed below. Note that for nonblocking sockets, a return |
| 532 | * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection |
| 533 | * request can be completed later; you should use GSocket_Select() |
| 534 | * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the |
| 535 | * corresponding asynchronous events. |
| 536 | * |
| 537 | * For datagram (non connection oriented) sockets, GSocket_Connect() |
| 538 | * just sets the peer address established with GSocket_SetPeer() as |
| 539 | * default destination. |
| 540 | * |
| 541 | * Error codes: |
| 542 | * GSOCK_INVSOCK - the socket is in use or not valid. |
| 543 | * GSOCK_INVADDR - the peer address has not been established. |
| 544 | * GSOCK_TIMEDOUT - timeout, the connection failed. |
| 545 | * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only) |
| 546 | * GSOCK_MEMERR - couldn't allocate memory. |
| 547 | * GSOCK_IOERR - low-level error. |
| 548 | */ |
| 549 | GSocketError GSocket::Connect(GSocketStream stream) |
| 550 | { |
| 551 | int ret, err; |
| 552 | u_long arg = 1; |
| 553 | |
| 554 | assert(this); |
| 555 | |
| 556 | /* Enable CONNECTION events (needed for nonblocking connections) */ |
| 557 | m_detected &= ~GSOCK_CONNECTION_FLAG; |
| 558 | |
| 559 | if (m_fd != INVALID_SOCKET) |
| 560 | { |
| 561 | m_error = GSOCK_INVSOCK; |
| 562 | return GSOCK_INVSOCK; |
| 563 | } |
| 564 | |
| 565 | if (!m_peer) |
| 566 | { |
| 567 | m_error = GSOCK_INVADDR; |
| 568 | return GSOCK_INVADDR; |
| 569 | } |
| 570 | |
| 571 | /* Streamed or dgram socket? */ |
| 572 | m_stream = (stream == GSOCK_STREAMED); |
| 573 | m_server = false; |
| 574 | m_establishing = false; |
| 575 | |
| 576 | /* Create the socket */ |
| 577 | m_fd = socket(m_peer->m_realfamily, |
| 578 | m_stream? SOCK_STREAM : SOCK_DGRAM, 0); |
| 579 | |
| 580 | if (m_fd == INVALID_SOCKET) |
| 581 | { |
| 582 | m_error = GSOCK_IOERR; |
| 583 | return GSOCK_IOERR; |
| 584 | } |
| 585 | |
| 586 | ioctlsocket(m_fd, FIONBIO, (u_long FAR *) &arg); |
| 587 | gs_gui_functions->Enable_Events(this); |
| 588 | |
| 589 | /* Connect it to the peer address, with a timeout (see below) */ |
| 590 | ret = connect(m_fd, m_peer->m_addr, m_peer->m_len); |
| 591 | |
| 592 | if (ret == SOCKET_ERROR) |
| 593 | { |
| 594 | err = WSAGetLastError(); |
| 595 | |
| 596 | /* If connect failed with EWOULDBLOCK and the GSocket object |
| 597 | * is in blocking mode, we select() for the specified timeout |
| 598 | * checking for writability to see if the connection request |
| 599 | * completes. |
| 600 | */ |
| 601 | if ((err == WSAEWOULDBLOCK) && (!m_non_blocking)) |
| 602 | { |
| 603 | err = Connect_Timeout(); |
| 604 | |
| 605 | if (err != GSOCK_NOERROR) |
| 606 | { |
| 607 | Close(); |
| 608 | /* m_error is set in _GSocket_Connect_Timeout */ |
| 609 | } |
| 610 | |
| 611 | return (GSocketError) err; |
| 612 | } |
| 613 | |
| 614 | /* If connect failed with EWOULDBLOCK and the GSocket object |
| 615 | * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK |
| 616 | * (and return GSOCK_WOULDBLOCK) but we don't close the socket; |
| 617 | * this way if the connection completes, a GSOCK_CONNECTION |
| 618 | * event will be generated, if enabled. |
| 619 | */ |
| 620 | if ((err == WSAEWOULDBLOCK) && (m_non_blocking)) |
| 621 | { |
| 622 | m_establishing = true; |
| 623 | m_error = GSOCK_WOULDBLOCK; |
| 624 | return GSOCK_WOULDBLOCK; |
| 625 | } |
| 626 | |
| 627 | /* If connect failed with an error other than EWOULDBLOCK, |
| 628 | * then the call to GSocket_Connect() has failed. |
| 629 | */ |
| 630 | Close(); |
| 631 | m_error = GSOCK_IOERR; |
| 632 | return GSOCK_IOERR; |
| 633 | } |
| 634 | |
| 635 | return GSOCK_NOERROR; |
| 636 | } |
| 637 | |
| 638 | /* Datagram sockets */ |
| 639 | |
| 640 | /* GSocket_SetNonOriented: |
| 641 | * Sets up this socket as a non-connection oriented (datagram) socket. |
| 642 | * Before using this function, the local address must have been set |
| 643 | * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR |
| 644 | * on success, or one of the following otherwise. |
| 645 | * |
| 646 | * Error codes: |
| 647 | * GSOCK_INVSOCK - the socket is in use. |
| 648 | * GSOCK_INVADDR - the local address has not been set. |
| 649 | * GSOCK_IOERR - low-level error. |
| 650 | */ |
| 651 | GSocketError GSocket::SetNonOriented() |
| 652 | { |
| 653 | u_long arg = 1; |
| 654 | |
| 655 | assert(this); |
| 656 | |
| 657 | if (m_fd != INVALID_SOCKET) |
| 658 | { |
| 659 | m_error = GSOCK_INVSOCK; |
| 660 | return GSOCK_INVSOCK; |
| 661 | } |
| 662 | |
| 663 | if (!m_local) |
| 664 | { |
| 665 | m_error = GSOCK_INVADDR; |
| 666 | return GSOCK_INVADDR; |
| 667 | } |
| 668 | |
| 669 | /* Initialize all fields */ |
| 670 | m_stream = false; |
| 671 | m_server = false; |
| 672 | |
| 673 | /* Create the socket */ |
| 674 | m_fd = socket(m_local->m_realfamily, SOCK_DGRAM, 0); |
| 675 | |
| 676 | if (m_fd == INVALID_SOCKET) |
| 677 | { |
| 678 | m_error = GSOCK_IOERR; |
| 679 | return GSOCK_IOERR; |
| 680 | } |
| 681 | |
| 682 | ioctlsocket(m_fd, FIONBIO, (u_long FAR *) &arg); |
| 683 | gs_gui_functions->Enable_Events(this); |
| 684 | |
| 685 | /* Bind to the local address, |
| 686 | * and retrieve the actual address bound. |
| 687 | */ |
| 688 | if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) || |
| 689 | (getsockname(m_fd, |
| 690 | m_local->m_addr, |
| 691 | (SOCKLEN_T *)&m_local->m_len) != 0)) |
| 692 | { |
| 693 | Close(); |
| 694 | m_error = GSOCK_IOERR; |
| 695 | return GSOCK_IOERR; |
| 696 | } |
| 697 | |
| 698 | return GSOCK_NOERROR; |
| 699 | } |
| 700 | |
| 701 | /* Generic IO */ |
| 702 | |
| 703 | /* Like recv(), send(), ... */ |
| 704 | int GSocket::Read(char *buffer, int size) |
| 705 | { |
| 706 | int ret; |
| 707 | |
| 708 | assert(this); |
| 709 | |
| 710 | /* Reenable INPUT events */ |
| 711 | m_detected &= ~GSOCK_INPUT_FLAG; |
| 712 | |
| 713 | if (m_fd == INVALID_SOCKET || m_server) |
| 714 | { |
| 715 | m_error = GSOCK_INVSOCK; |
| 716 | return -1; |
| 717 | } |
| 718 | |
| 719 | /* If the socket is blocking, wait for data (with a timeout) */ |
| 720 | if (Input_Timeout() == GSOCK_TIMEDOUT) |
| 721 | return -1; |
| 722 | |
| 723 | /* Read the data */ |
| 724 | if (m_stream) |
| 725 | ret = Recv_Stream(buffer, size); |
| 726 | else |
| 727 | ret = Recv_Dgram(buffer, size); |
| 728 | |
| 729 | if (ret == SOCKET_ERROR) |
| 730 | { |
| 731 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 732 | m_error = GSOCK_IOERR; |
| 733 | else |
| 734 | m_error = GSOCK_WOULDBLOCK; |
| 735 | return -1; |
| 736 | } |
| 737 | |
| 738 | return ret; |
| 739 | } |
| 740 | |
| 741 | int GSocket::Write(const char *buffer, int size) |
| 742 | { |
| 743 | int ret; |
| 744 | |
| 745 | assert(this); |
| 746 | |
| 747 | if (m_fd == INVALID_SOCKET || m_server) |
| 748 | { |
| 749 | m_error = GSOCK_INVSOCK; |
| 750 | return -1; |
| 751 | } |
| 752 | |
| 753 | /* If the socket is blocking, wait for writability (with a timeout) */ |
| 754 | if (Output_Timeout() == GSOCK_TIMEDOUT) |
| 755 | return -1; |
| 756 | |
| 757 | /* Write the data */ |
| 758 | if (m_stream) |
| 759 | ret = Send_Stream(buffer, size); |
| 760 | else |
| 761 | ret = Send_Dgram(buffer, size); |
| 762 | |
| 763 | if (ret == SOCKET_ERROR) |
| 764 | { |
| 765 | if (WSAGetLastError() != WSAEWOULDBLOCK) |
| 766 | m_error = GSOCK_IOERR; |
| 767 | else |
| 768 | m_error = GSOCK_WOULDBLOCK; |
| 769 | |
| 770 | /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect |
| 771 | * does). Once the first OUTPUT event is received, users can assume |
| 772 | * that the socket is writable until a read operation fails. Only then |
| 773 | * will further OUTPUT events be posted. |
| 774 | */ |
| 775 | m_detected &= ~GSOCK_OUTPUT_FLAG; |
| 776 | return -1; |
| 777 | } |
| 778 | |
| 779 | return ret; |
| 780 | } |
| 781 | |
| 782 | /* GSocket_Select: |
| 783 | * Polls the socket to determine its status. This function will |
| 784 | * check for the events specified in the 'flags' parameter, and |
| 785 | * it will return a mask indicating which operations can be |
| 786 | * performed. This function won't block, regardless of the |
| 787 | * mode (blocking | nonblocking) of the socket. |
| 788 | */ |
| 789 | GSocketEventFlags GSocket::Select(GSocketEventFlags flags) |
| 790 | { |
| 791 | if (!gs_gui_functions->CanUseEventLoop()) |
| 792 | { |
| 793 | GSocketEventFlags result = 0; |
| 794 | fd_set readfds; |
| 795 | fd_set writefds; |
| 796 | fd_set exceptfds; |
| 797 | |
| 798 | assert(this); |
| 799 | |
| 800 | FD_ZERO(&readfds); |
| 801 | FD_ZERO(&writefds); |
| 802 | FD_ZERO(&exceptfds); |
| 803 | FD_SET(m_fd, &readfds); |
| 804 | if (flags & GSOCK_OUTPUT_FLAG || flags & GSOCK_CONNECTION_FLAG) |
| 805 | FD_SET(m_fd, &writefds); |
| 806 | FD_SET(m_fd, &exceptfds); |
| 807 | |
| 808 | /* Check 'sticky' CONNECTION flag first */ |
| 809 | result |= (GSOCK_CONNECTION_FLAG & m_detected); |
| 810 | |
| 811 | /* If we have already detected a LOST event, then don't try |
| 812 | * to do any further processing. |
| 813 | */ |
| 814 | if ((m_detected & GSOCK_LOST_FLAG) != 0) |
| 815 | { |
| 816 | m_establishing = false; |
| 817 | |
| 818 | return (GSOCK_LOST_FLAG & flags); |
| 819 | } |
| 820 | |
| 821 | /* Try select now */ |
| 822 | if (select(m_fd + 1, &readfds, &writefds, &exceptfds, |
| 823 | &m_timeout) <= 0) |
| 824 | { |
| 825 | /* What to do here? */ |
| 826 | return (result & flags); |
| 827 | } |
| 828 | |
| 829 | /* Check for readability */ |
| 830 | if (FD_ISSET(m_fd, &readfds)) |
| 831 | { |
| 832 | char c; |
| 833 | |
| 834 | if (!m_stream || recv(m_fd, &c, 1, MSG_PEEK) > 0) |
| 835 | { |
| 836 | result |= GSOCK_INPUT_FLAG; |
| 837 | } |
| 838 | else |
| 839 | { |
| 840 | if (m_server && m_stream) |
| 841 | { |
| 842 | result |= GSOCK_CONNECTION_FLAG; |
| 843 | m_detected |= GSOCK_CONNECTION_FLAG; |
| 844 | } |
| 845 | else |
| 846 | { |
| 847 | m_detected = GSOCK_LOST_FLAG; |
| 848 | m_establishing = false; |
| 849 | |
| 850 | /* LOST event: Abort any further processing */ |
| 851 | return (GSOCK_LOST_FLAG & flags); |
| 852 | } |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | /* Check for writability */ |
| 857 | if (FD_ISSET(m_fd, &writefds)) |
| 858 | { |
| 859 | if (m_establishing && !m_server) |
| 860 | { |
| 861 | int error; |
| 862 | SOCKLEN_T len = sizeof(error); |
| 863 | |
| 864 | m_establishing = false; |
| 865 | |
| 866 | getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len); |
| 867 | |
| 868 | if (error) |
| 869 | { |
| 870 | m_detected = GSOCK_LOST_FLAG; |
| 871 | |
| 872 | /* LOST event: Abort any further processing */ |
| 873 | return (GSOCK_LOST_FLAG & flags); |
| 874 | } |
| 875 | else |
| 876 | { |
| 877 | result |= GSOCK_CONNECTION_FLAG; |
| 878 | m_detected |= GSOCK_CONNECTION_FLAG; |
| 879 | } |
| 880 | } |
| 881 | else |
| 882 | { |
| 883 | result |= GSOCK_OUTPUT_FLAG; |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | /* Check for exceptions and errors (is this useful in Unices?) */ |
| 888 | if (FD_ISSET(m_fd, &exceptfds)) |
| 889 | { |
| 890 | m_establishing = false; |
| 891 | m_detected = GSOCK_LOST_FLAG; |
| 892 | |
| 893 | /* LOST event: Abort any further processing */ |
| 894 | return (GSOCK_LOST_FLAG & flags); |
| 895 | } |
| 896 | |
| 897 | return (result & flags); |
| 898 | } |
| 899 | else /* USE_GUI() */ |
| 900 | { |
| 901 | assert(this); |
| 902 | return flags & m_detected; |
| 903 | } |
| 904 | } |
| 905 | |
| 906 | /* Attributes */ |
| 907 | |
| 908 | /* GSocket_SetNonBlocking: |
| 909 | * Sets the socket to non-blocking mode. All IO calls will return |
| 910 | * immediately. |
| 911 | */ |
| 912 | void GSocket::SetNonBlocking(bool non_block) |
| 913 | { |
| 914 | assert(this); |
| 915 | |
| 916 | m_non_blocking = non_block; |
| 917 | } |
| 918 | |
| 919 | /* GSocket_SetTimeout: |
| 920 | * Sets the timeout for blocking calls. Time is expressed in |
| 921 | * milliseconds. |
| 922 | */ |
| 923 | void GSocket::SetTimeout(unsigned long millis) |
| 924 | { |
| 925 | assert(this); |
| 926 | |
| 927 | m_timeout.tv_sec = (millis / 1000); |
| 928 | m_timeout.tv_usec = (millis % 1000) * 1000; |
| 929 | } |
| 930 | |
| 931 | /* GSocket_GetError: |
| 932 | * Returns the last error occured for this socket. Note that successful |
| 933 | * operations do not clear this back to GSOCK_NOERROR, so use it only |
| 934 | * after an error. |
| 935 | */ |
| 936 | GSocketError WXDLLIMPEXP_NET GSocket::GetError() |
| 937 | { |
| 938 | assert(this); |
| 939 | |
| 940 | return m_error; |
| 941 | } |
| 942 | |
| 943 | /* Callbacks */ |
| 944 | |
| 945 | /* GSOCK_INPUT: |
| 946 | * There is data to be read in the input buffer. If, after a read |
| 947 | * operation, there is still data available, the callback function will |
| 948 | * be called again. |
| 949 | * GSOCK_OUTPUT: |
| 950 | * The socket is available for writing. That is, the next write call |
| 951 | * won't block. This event is generated only once, when the connection is |
| 952 | * first established, and then only if a call failed with GSOCK_WOULDBLOCK, |
| 953 | * when the output buffer empties again. This means that the app should |
| 954 | * assume that it can write since the first OUTPUT event, and no more |
| 955 | * OUTPUT events will be generated unless an error occurs. |
| 956 | * GSOCK_CONNECTION: |
| 957 | * Connection succesfully established, for client sockets, or incoming |
| 958 | * client connection, for server sockets. Wait for this event (also watch |
| 959 | * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call. |
| 960 | * GSOCK_LOST: |
| 961 | * The connection is lost (or a connection request failed); this could |
| 962 | * be due to a failure, or due to the peer closing it gracefully. |
| 963 | */ |
| 964 | |
| 965 | /* GSocket_SetCallback: |
| 966 | * Enables the callbacks specified by 'flags'. Note that 'flags' |
| 967 | * may be a combination of flags OR'ed toghether, so the same |
| 968 | * callback function can be made to accept different events. |
| 969 | * The callback function must have the following prototype: |
| 970 | * |
| 971 | * void function(GSocket *socket, GSocketEvent event, char *cdata) |
| 972 | */ |
| 973 | void GSocket::SetCallback(GSocketEventFlags flags, |
| 974 | GSocketCallback callback, char *cdata) |
| 975 | { |
| 976 | int count; |
| 977 | |
| 978 | assert(this); |
| 979 | |
| 980 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 981 | { |
| 982 | if ((flags & (1 << count)) != 0) |
| 983 | { |
| 984 | m_cbacks[count] = callback; |
| 985 | m_data[count] = cdata; |
| 986 | } |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | /* GSocket_UnsetCallback: |
| 991 | * Disables all callbacks specified by 'flags', which may be a |
| 992 | * combination of flags OR'ed toghether. |
| 993 | */ |
| 994 | void GSocket::UnsetCallback(GSocketEventFlags flags) |
| 995 | { |
| 996 | int count; |
| 997 | |
| 998 | assert(this); |
| 999 | |
| 1000 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 1001 | { |
| 1002 | if ((flags & (1 << count)) != 0) |
| 1003 | { |
| 1004 | m_cbacks[count] = NULL; |
| 1005 | m_data[count] = NULL; |
| 1006 | } |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | GSocketError GSocket::GetSockOpt(int level, int optname, |
| 1011 | void *optval, int *optlen) |
| 1012 | { |
| 1013 | if (getsockopt(m_fd, level, optname, (char*)optval, optlen) == 0) |
| 1014 | { |
| 1015 | return GSOCK_NOERROR; |
| 1016 | } |
| 1017 | return GSOCK_OPTERR; |
| 1018 | } |
| 1019 | |
| 1020 | GSocketError GSocket::SetSockOpt(int level, int optname, |
| 1021 | const void *optval, int optlen) |
| 1022 | { |
| 1023 | if (setsockopt(m_fd, level, optname, (char*)optval, optlen) == 0) |
| 1024 | { |
| 1025 | return GSOCK_NOERROR; |
| 1026 | } |
| 1027 | return GSOCK_OPTERR; |
| 1028 | } |
| 1029 | |
| 1030 | /* Internals (IO) */ |
| 1031 | |
| 1032 | /* _GSocket_Input_Timeout: |
| 1033 | * For blocking sockets, wait until data is available or |
| 1034 | * until timeout ellapses. |
| 1035 | */ |
| 1036 | GSocketError GSocket::Input_Timeout() |
| 1037 | { |
| 1038 | fd_set readfds; |
| 1039 | |
| 1040 | if (!m_non_blocking) |
| 1041 | { |
| 1042 | FD_ZERO(&readfds); |
| 1043 | FD_SET(m_fd, &readfds); |
| 1044 | if (select(0, &readfds, NULL, NULL, &m_timeout) == 0) |
| 1045 | { |
| 1046 | m_error = GSOCK_TIMEDOUT; |
| 1047 | return GSOCK_TIMEDOUT; |
| 1048 | } |
| 1049 | } |
| 1050 | return GSOCK_NOERROR; |
| 1051 | } |
| 1052 | |
| 1053 | /* _GSocket_Output_Timeout: |
| 1054 | * For blocking sockets, wait until data can be sent without |
| 1055 | * blocking or until timeout ellapses. |
| 1056 | */ |
| 1057 | GSocketError GSocket::Output_Timeout() |
| 1058 | { |
| 1059 | fd_set writefds; |
| 1060 | |
| 1061 | if (!m_non_blocking) |
| 1062 | { |
| 1063 | FD_ZERO(&writefds); |
| 1064 | FD_SET(m_fd, &writefds); |
| 1065 | if (select(0, NULL, &writefds, NULL, &m_timeout) == 0) |
| 1066 | { |
| 1067 | m_error = GSOCK_TIMEDOUT; |
| 1068 | return GSOCK_TIMEDOUT; |
| 1069 | } |
| 1070 | } |
| 1071 | return GSOCK_NOERROR; |
| 1072 | } |
| 1073 | |
| 1074 | /* _GSocket_Connect_Timeout: |
| 1075 | * For blocking sockets, wait until the connection is |
| 1076 | * established or fails, or until timeout ellapses. |
| 1077 | */ |
| 1078 | GSocketError GSocket::Connect_Timeout() |
| 1079 | { |
| 1080 | fd_set writefds; |
| 1081 | fd_set exceptfds; |
| 1082 | |
| 1083 | FD_ZERO(&writefds); |
| 1084 | FD_ZERO(&exceptfds); |
| 1085 | FD_SET(m_fd, &writefds); |
| 1086 | FD_SET(m_fd, &exceptfds); |
| 1087 | if (select(0, NULL, &writefds, &exceptfds, &m_timeout) == 0) |
| 1088 | { |
| 1089 | m_error = GSOCK_TIMEDOUT; |
| 1090 | return GSOCK_TIMEDOUT; |
| 1091 | } |
| 1092 | if (!FD_ISSET(m_fd, &writefds)) |
| 1093 | { |
| 1094 | m_error = GSOCK_IOERR; |
| 1095 | return GSOCK_IOERR; |
| 1096 | } |
| 1097 | |
| 1098 | return GSOCK_NOERROR; |
| 1099 | } |
| 1100 | |
| 1101 | int GSocket::Recv_Stream(char *buffer, int size) |
| 1102 | { |
| 1103 | return recv(m_fd, buffer, size, 0); |
| 1104 | } |
| 1105 | |
| 1106 | int GSocket::Recv_Dgram(char *buffer, int size) |
| 1107 | { |
| 1108 | struct sockaddr from; |
| 1109 | SOCKLEN_T fromlen = sizeof(from); |
| 1110 | int ret; |
| 1111 | GSocketError err; |
| 1112 | |
| 1113 | ret = recvfrom(m_fd, buffer, size, 0, &from, &fromlen); |
| 1114 | |
| 1115 | if (ret == SOCKET_ERROR) |
| 1116 | return SOCKET_ERROR; |
| 1117 | |
| 1118 | /* Translate a system address into a GSocket address */ |
| 1119 | if (!m_peer) |
| 1120 | { |
| 1121 | m_peer = GAddress_new(); |
| 1122 | if (!m_peer) |
| 1123 | { |
| 1124 | m_error = GSOCK_MEMERR; |
| 1125 | return -1; |
| 1126 | } |
| 1127 | } |
| 1128 | err = _GAddress_translate_from(m_peer, &from, fromlen); |
| 1129 | if (err != GSOCK_NOERROR) |
| 1130 | { |
| 1131 | GAddress_destroy(m_peer); |
| 1132 | m_peer = NULL; |
| 1133 | m_error = err; |
| 1134 | return -1; |
| 1135 | } |
| 1136 | |
| 1137 | return ret; |
| 1138 | } |
| 1139 | |
| 1140 | int GSocket::Send_Stream(const char *buffer, int size) |
| 1141 | { |
| 1142 | return send(m_fd, buffer, size, 0); |
| 1143 | } |
| 1144 | |
| 1145 | int GSocket::Send_Dgram(const char *buffer, int size) |
| 1146 | { |
| 1147 | struct sockaddr *addr; |
| 1148 | int len, ret; |
| 1149 | GSocketError err; |
| 1150 | |
| 1151 | if (!m_peer) |
| 1152 | { |
| 1153 | m_error = GSOCK_INVADDR; |
| 1154 | return -1; |
| 1155 | } |
| 1156 | |
| 1157 | err = _GAddress_translate_to(m_peer, &addr, &len); |
| 1158 | if (err != GSOCK_NOERROR) |
| 1159 | { |
| 1160 | m_error = err; |
| 1161 | return -1; |
| 1162 | } |
| 1163 | |
| 1164 | ret = sendto(m_fd, buffer, size, 0, addr, len); |
| 1165 | |
| 1166 | /* Frees memory allocated by _GAddress_translate_to */ |
| 1167 | free(addr); |
| 1168 | |
| 1169 | return ret; |
| 1170 | } |
| 1171 | |
| 1172 | /* Compatibility functions for GSocket */ |
| 1173 | GSocket *GSocket_new(void) |
| 1174 | { |
| 1175 | GSocket *newsocket = new GSocket(); |
| 1176 | if(newsocket->IsOk()) |
| 1177 | return newsocket; |
| 1178 | delete newsocket; |
| 1179 | return NULL; |
| 1180 | } |
| 1181 | |
| 1182 | |
| 1183 | /* |
| 1184 | * ------------------------------------------------------------------------- |
| 1185 | * GAddress |
| 1186 | * ------------------------------------------------------------------------- |
| 1187 | */ |
| 1188 | |
| 1189 | /* CHECK_ADDRESS verifies that the current address family is either |
| 1190 | * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it |
| 1191 | * initalizes it to be a GSOCK_*family*. In other cases, it returns |
| 1192 | * an appropiate error code. |
| 1193 | * |
| 1194 | * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error. |
| 1195 | */ |
| 1196 | #define CHECK_ADDRESS(address, family) \ |
| 1197 | { \ |
| 1198 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1199 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1200 | return address->m_error; \ |
| 1201 | if (address->m_family != GSOCK_##family) \ |
| 1202 | { \ |
| 1203 | address->m_error = GSOCK_INVADDR; \ |
| 1204 | return GSOCK_INVADDR; \ |
| 1205 | } \ |
| 1206 | } |
| 1207 | |
| 1208 | #define CHECK_ADDRESS_RETVAL(address, family, retval) \ |
| 1209 | { \ |
| 1210 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1211 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1212 | return retval; \ |
| 1213 | if (address->m_family != GSOCK_##family) \ |
| 1214 | { \ |
| 1215 | address->m_error = GSOCK_INVADDR; \ |
| 1216 | return retval; \ |
| 1217 | } \ |
| 1218 | } |
| 1219 | |
| 1220 | |
| 1221 | GAddress *GAddress_new(void) |
| 1222 | { |
| 1223 | GAddress *address; |
| 1224 | |
| 1225 | if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1226 | return NULL; |
| 1227 | |
| 1228 | address->m_family = GSOCK_NOFAMILY; |
| 1229 | address->m_addr = NULL; |
| 1230 | address->m_len = 0; |
| 1231 | |
| 1232 | return address; |
| 1233 | } |
| 1234 | |
| 1235 | GAddress *GAddress_copy(GAddress *address) |
| 1236 | { |
| 1237 | GAddress *addr2; |
| 1238 | |
| 1239 | assert(address != NULL); |
| 1240 | |
| 1241 | if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1242 | return NULL; |
| 1243 | |
| 1244 | memcpy(addr2, address, sizeof(GAddress)); |
| 1245 | |
| 1246 | if (address->m_addr) |
| 1247 | { |
| 1248 | addr2->m_addr = (struct sockaddr *) malloc(addr2->m_len); |
| 1249 | if (addr2->m_addr == NULL) |
| 1250 | { |
| 1251 | free(addr2); |
| 1252 | return NULL; |
| 1253 | } |
| 1254 | memcpy(addr2->m_addr, address->m_addr, addr2->m_len); |
| 1255 | } |
| 1256 | |
| 1257 | return addr2; |
| 1258 | } |
| 1259 | |
| 1260 | void GAddress_destroy(GAddress *address) |
| 1261 | { |
| 1262 | assert(address != NULL); |
| 1263 | |
| 1264 | if (address->m_addr) |
| 1265 | free(address->m_addr); |
| 1266 | |
| 1267 | free(address); |
| 1268 | } |
| 1269 | |
| 1270 | void GAddress_SetFamily(GAddress *address, GAddressType type) |
| 1271 | { |
| 1272 | assert(address != NULL); |
| 1273 | |
| 1274 | address->m_family = type; |
| 1275 | } |
| 1276 | |
| 1277 | GAddressType GAddress_GetFamily(GAddress *address) |
| 1278 | { |
| 1279 | assert(address != NULL); |
| 1280 | |
| 1281 | return address->m_family; |
| 1282 | } |
| 1283 | |
| 1284 | GSocketError _GAddress_translate_from(GAddress *address, |
| 1285 | struct sockaddr *addr, int len) |
| 1286 | { |
| 1287 | address->m_realfamily = addr->sa_family; |
| 1288 | switch (addr->sa_family) |
| 1289 | { |
| 1290 | case AF_INET: |
| 1291 | address->m_family = GSOCK_INET; |
| 1292 | break; |
| 1293 | case AF_UNIX: |
| 1294 | address->m_family = GSOCK_UNIX; |
| 1295 | break; |
| 1296 | #ifdef AF_INET6 |
| 1297 | case AF_INET6: |
| 1298 | address->m_family = GSOCK_INET6; |
| 1299 | break; |
| 1300 | #endif |
| 1301 | default: |
| 1302 | { |
| 1303 | address->m_error = GSOCK_INVOP; |
| 1304 | return GSOCK_INVOP; |
| 1305 | } |
| 1306 | } |
| 1307 | |
| 1308 | if (address->m_addr) |
| 1309 | free(address->m_addr); |
| 1310 | |
| 1311 | address->m_len = len; |
| 1312 | address->m_addr = (struct sockaddr *) malloc(len); |
| 1313 | |
| 1314 | if (address->m_addr == NULL) |
| 1315 | { |
| 1316 | address->m_error = GSOCK_MEMERR; |
| 1317 | return GSOCK_MEMERR; |
| 1318 | } |
| 1319 | memcpy(address->m_addr, addr, len); |
| 1320 | |
| 1321 | return GSOCK_NOERROR; |
| 1322 | } |
| 1323 | |
| 1324 | GSocketError _GAddress_translate_to(GAddress *address, |
| 1325 | struct sockaddr **addr, int *len) |
| 1326 | { |
| 1327 | if (!address->m_addr) |
| 1328 | { |
| 1329 | address->m_error = GSOCK_INVADDR; |
| 1330 | return GSOCK_INVADDR; |
| 1331 | } |
| 1332 | |
| 1333 | *len = address->m_len; |
| 1334 | *addr = (struct sockaddr *) malloc(address->m_len); |
| 1335 | if (*addr == NULL) |
| 1336 | { |
| 1337 | address->m_error = GSOCK_MEMERR; |
| 1338 | return GSOCK_MEMERR; |
| 1339 | } |
| 1340 | |
| 1341 | memcpy(*addr, address->m_addr, address->m_len); |
| 1342 | return GSOCK_NOERROR; |
| 1343 | } |
| 1344 | |
| 1345 | /* |
| 1346 | * ------------------------------------------------------------------------- |
| 1347 | * Internet address family |
| 1348 | * ------------------------------------------------------------------------- |
| 1349 | */ |
| 1350 | |
| 1351 | GSocketError _GAddress_Init_INET(GAddress *address) |
| 1352 | { |
| 1353 | address->m_len = sizeof(struct sockaddr_in); |
| 1354 | address->m_addr = (struct sockaddr *) malloc(address->m_len); |
| 1355 | if (address->m_addr == NULL) |
| 1356 | { |
| 1357 | address->m_error = GSOCK_MEMERR; |
| 1358 | return GSOCK_MEMERR; |
| 1359 | } |
| 1360 | |
| 1361 | address->m_family = GSOCK_INET; |
| 1362 | address->m_realfamily = AF_INET; |
| 1363 | ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; |
| 1364 | ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; |
| 1365 | |
| 1366 | return GSOCK_NOERROR; |
| 1367 | } |
| 1368 | |
| 1369 | GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) |
| 1370 | { |
| 1371 | struct hostent *he; |
| 1372 | struct in_addr *addr; |
| 1373 | |
| 1374 | assert(address != NULL); |
| 1375 | |
| 1376 | CHECK_ADDRESS(address, INET); |
| 1377 | |
| 1378 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1379 | |
| 1380 | addr->s_addr = inet_addr(hostname); |
| 1381 | |
| 1382 | /* If it is a numeric host name, convert it now */ |
| 1383 | if (addr->s_addr == INADDR_NONE) |
| 1384 | { |
| 1385 | struct in_addr *array_addr; |
| 1386 | |
| 1387 | /* It is a real name, we solve it */ |
| 1388 | if ((he = gethostbyname(hostname)) == NULL) |
| 1389 | { |
| 1390 | /* addr->s_addr = INADDR_NONE just done by inet_addr() above */ |
| 1391 | address->m_error = GSOCK_NOHOST; |
| 1392 | return GSOCK_NOHOST; |
| 1393 | } |
| 1394 | array_addr = (struct in_addr *) *(he->h_addr_list); |
| 1395 | addr->s_addr = array_addr[0].s_addr; |
| 1396 | } |
| 1397 | return GSOCK_NOERROR; |
| 1398 | } |
| 1399 | |
| 1400 | GSocketError GAddress_INET_SetAnyAddress(GAddress *address) |
| 1401 | { |
| 1402 | return GAddress_INET_SetHostAddress(address, INADDR_ANY); |
| 1403 | } |
| 1404 | |
| 1405 | GSocketError GAddress_INET_SetHostAddress(GAddress *address, |
| 1406 | unsigned long hostaddr) |
| 1407 | { |
| 1408 | struct in_addr *addr; |
| 1409 | |
| 1410 | assert(address != NULL); |
| 1411 | |
| 1412 | CHECK_ADDRESS(address, INET); |
| 1413 | |
| 1414 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1415 | addr->s_addr = htonl(hostaddr);; |
| 1416 | |
| 1417 | return GSOCK_NOERROR; |
| 1418 | } |
| 1419 | |
| 1420 | GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, |
| 1421 | const char *protocol) |
| 1422 | { |
| 1423 | struct servent *se; |
| 1424 | struct sockaddr_in *addr; |
| 1425 | |
| 1426 | assert(address != NULL); |
| 1427 | CHECK_ADDRESS(address, INET); |
| 1428 | |
| 1429 | if (!port) |
| 1430 | { |
| 1431 | address->m_error = GSOCK_INVPORT; |
| 1432 | return GSOCK_INVPORT; |
| 1433 | } |
| 1434 | |
| 1435 | se = getservbyname(port, protocol); |
| 1436 | if (!se) |
| 1437 | { |
| 1438 | if (isdigit(port[0])) |
| 1439 | { |
| 1440 | int port_int; |
| 1441 | |
| 1442 | port_int = atoi(port); |
| 1443 | addr = (struct sockaddr_in *)address->m_addr; |
| 1444 | addr->sin_port = htons((u_short) port_int); |
| 1445 | return GSOCK_NOERROR; |
| 1446 | } |
| 1447 | |
| 1448 | address->m_error = GSOCK_INVPORT; |
| 1449 | return GSOCK_INVPORT; |
| 1450 | } |
| 1451 | |
| 1452 | addr = (struct sockaddr_in *)address->m_addr; |
| 1453 | addr->sin_port = se->s_port; |
| 1454 | |
| 1455 | return GSOCK_NOERROR; |
| 1456 | } |
| 1457 | |
| 1458 | GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port) |
| 1459 | { |
| 1460 | struct sockaddr_in *addr; |
| 1461 | |
| 1462 | assert(address != NULL); |
| 1463 | CHECK_ADDRESS(address, INET); |
| 1464 | |
| 1465 | addr = (struct sockaddr_in *)address->m_addr; |
| 1466 | addr->sin_port = htons(port); |
| 1467 | |
| 1468 | return GSOCK_NOERROR; |
| 1469 | } |
| 1470 | |
| 1471 | GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf) |
| 1472 | { |
| 1473 | struct hostent *he; |
| 1474 | char *addr_buf; |
| 1475 | struct sockaddr_in *addr; |
| 1476 | |
| 1477 | assert(address != NULL); |
| 1478 | CHECK_ADDRESS(address, INET); |
| 1479 | |
| 1480 | addr = (struct sockaddr_in *)address->m_addr; |
| 1481 | addr_buf = (char *)&(addr->sin_addr); |
| 1482 | |
| 1483 | he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET); |
| 1484 | if (he == NULL) |
| 1485 | { |
| 1486 | address->m_error = GSOCK_NOHOST; |
| 1487 | return GSOCK_NOHOST; |
| 1488 | } |
| 1489 | |
| 1490 | strncpy(hostname, he->h_name, sbuf); |
| 1491 | |
| 1492 | return GSOCK_NOERROR; |
| 1493 | } |
| 1494 | |
| 1495 | unsigned long GAddress_INET_GetHostAddress(GAddress *address) |
| 1496 | { |
| 1497 | struct sockaddr_in *addr; |
| 1498 | |
| 1499 | assert(address != NULL); |
| 1500 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 1501 | |
| 1502 | addr = (struct sockaddr_in *)address->m_addr; |
| 1503 | |
| 1504 | return ntohl(addr->sin_addr.s_addr); |
| 1505 | } |
| 1506 | |
| 1507 | unsigned short GAddress_INET_GetPort(GAddress *address) |
| 1508 | { |
| 1509 | struct sockaddr_in *addr; |
| 1510 | |
| 1511 | assert(address != NULL); |
| 1512 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 1513 | |
| 1514 | addr = (struct sockaddr_in *)address->m_addr; |
| 1515 | return ntohs(addr->sin_port); |
| 1516 | } |
| 1517 | |
| 1518 | /* |
| 1519 | * ------------------------------------------------------------------------- |
| 1520 | * Unix address family |
| 1521 | * ------------------------------------------------------------------------- |
| 1522 | */ |
| 1523 | |
| 1524 | GSocketError _GAddress_Init_UNIX(GAddress *address) |
| 1525 | { |
| 1526 | assert (address != NULL); |
| 1527 | address->m_error = GSOCK_INVADDR; |
| 1528 | return GSOCK_INVADDR; |
| 1529 | } |
| 1530 | |
| 1531 | GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *WXUNUSED(path)) |
| 1532 | { |
| 1533 | assert (address != NULL); |
| 1534 | address->m_error = GSOCK_INVADDR; |
| 1535 | return GSOCK_INVADDR; |
| 1536 | } |
| 1537 | |
| 1538 | GSocketError GAddress_UNIX_GetPath(GAddress *address, char *WXUNUSED(path), size_t WXUNUSED(sbuf)) |
| 1539 | { |
| 1540 | assert (address != NULL); |
| 1541 | address->m_error = GSOCK_INVADDR; |
| 1542 | return GSOCK_INVADDR; |
| 1543 | } |
| 1544 | |
| 1545 | #else /* !wxUSE_SOCKETS */ |
| 1546 | |
| 1547 | /* |
| 1548 | * Translation unit shouldn't be empty, so include this typedef to make the |
| 1549 | * compiler (VC++ 6.0, for example) happy |
| 1550 | */ |
| 1551 | typedef void (*wxDummy)(); |
| 1552 | |
| 1553 | #endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */ |
| 1554 | |