| 1 | /* ------------------------------------------------------------------------- |
| 2 | * Project: GSocket (Generic Socket) for WX |
| 3 | * Name: gsocket.c |
| 4 | * Authors: Guilhem Lavaux, |
| 5 | * Guillermo Rodriguez Garcia <guille@iies.es> (maintainer) |
| 6 | * Purpose: GSocket main Unix-style file |
| 7 | * CVSID: $Id$ |
| 8 | * ------------------------------------------------------------------------- |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * PLEASE don't put C++ comments here - this is a C source file. |
| 13 | */ |
| 14 | |
| 15 | #ifndef __GSOCKET_STANDALONE__ |
| 16 | #include "wx/setup.h" |
| 17 | #endif |
| 18 | |
| 19 | #ifndef __EMX__ |
| 20 | /* I don't see, why this include is needed, but it seems to be necessary |
| 21 | sometimes. For EMX, including C++ headers into plain C source breaks |
| 22 | compilation, so don't do it there. */ |
| 23 | #include "wx/defs.h" |
| 24 | #endif |
| 25 | |
| 26 | #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) |
| 27 | |
| 28 | #define BSD_SELECT /* use Berkley Sockets select */ |
| 29 | |
| 30 | #include <assert.h> |
| 31 | #include <sys/types.h> |
| 32 | |
| 33 | #ifdef __EMX__ |
| 34 | #include <sys/time.h> |
| 35 | #include <netinet/in.h> |
| 36 | #include <arpa/inet.h> |
| 37 | #include <netdb.h> |
| 38 | #include <errno.h> |
| 39 | #include <unistd.h> |
| 40 | #include <sys/un.h> |
| 41 | #define HAVE_INET_ADDR |
| 42 | |
| 43 | #else |
| 44 | |
| 45 | #include <string.h> |
| 46 | |
| 47 | #include <sys/time.h> |
| 48 | #include <types.h> |
| 49 | #include <netinet/in.h> |
| 50 | #include <netdb.h> |
| 51 | #include <nerrno.h> |
| 52 | |
| 53 | #endif |
| 54 | |
| 55 | #if defined(__VISAGECPP__) && __IBMCPP__ < 400 |
| 56 | |
| 57 | #include <machine/endian.h> |
| 58 | #include <socket.h> |
| 59 | #include <ioctl.h> |
| 60 | #include <select.h> |
| 61 | #include <unistd.h> |
| 62 | |
| 63 | #define EBADF SOCEBADF |
| 64 | |
| 65 | #else |
| 66 | |
| 67 | #include <sys/socket.h> |
| 68 | #include <sys/ioctl.h> |
| 69 | #include <sys/select.h> |
| 70 | |
| 71 | #ifdef __EMX__ |
| 72 | #define soclose(a) close(a) |
| 73 | #else |
| 74 | #define select(a,b,c,d,e) bsdselect(a,b,c,d,e) |
| 75 | int _System bsdselect(int, |
| 76 | struct fd_set *, |
| 77 | struct fd_set *, |
| 78 | struct fd_set *, |
| 79 | struct timeval *); |
| 80 | int _System soclose(int); |
| 81 | #endif |
| 82 | #endif |
| 83 | |
| 84 | #include <stdio.h> |
| 85 | #if (defined(__VISAGECPP__) && __IBMCPP__ < 400) || defined(__EMX__) |
| 86 | # ifdef min |
| 87 | # undef min |
| 88 | # endif |
| 89 | # include <stdlib.h> |
| 90 | #endif |
| 91 | #include <stddef.h> |
| 92 | #include <ctype.h> |
| 93 | #include <stdlib.h> |
| 94 | |
| 95 | #include <signal.h> |
| 96 | |
| 97 | #ifndef SOCKLEN_T |
| 98 | |
| 99 | #ifdef __GLIBC__ |
| 100 | # if __GLIBC__ == 2 |
| 101 | # define SOCKLEN_T socklen_t |
| 102 | # endif |
| 103 | #else |
| 104 | # define SOCKLEN_T int |
| 105 | #endif |
| 106 | |
| 107 | #endif |
| 108 | |
| 109 | /* |
| 110 | * MSW defines this, Unices don't. |
| 111 | */ |
| 112 | #ifndef INVALID_SOCKET |
| 113 | #define INVALID_SOCKET -1 |
| 114 | #endif |
| 115 | |
| 116 | /* |
| 117 | * INADDR_BROADCAST is identical to INADDR_NONE which is not defined |
| 118 | * on all systems. INADDR_BROADCAST should be fine to indicate an error. |
| 119 | */ |
| 120 | #ifndef INADDR_NONE |
| 121 | #define INADDR_NONE INADDR_BROADCAST |
| 122 | #endif |
| 123 | |
| 124 | #define MASK_SIGNAL() \ |
| 125 | { \ |
| 126 | void (*old_handler)(int); \ |
| 127 | \ |
| 128 | old_handler = signal(SIGPIPE, SIG_IGN); |
| 129 | |
| 130 | #define UNMASK_SIGNAL() \ |
| 131 | signal(SIGPIPE, old_handler); \ |
| 132 | } |
| 133 | |
| 134 | #ifndef __GSOCKET_STANDALONE__ |
| 135 | # include "wx/unix/gsockunx.h" |
| 136 | # include "wx/gsocket.h" |
| 137 | #else |
| 138 | # include "gsockunx.h" |
| 139 | # include "gsocket.h" |
| 140 | #endif /* __GSOCKET_STANDALONE__ */ |
| 141 | |
| 142 | /* redefine some GUI-only functions to do nothing in console mode */ |
| 143 | #if defined(wxUSE_GUI) && !wxUSE_GUI |
| 144 | # define _GSocket_GUI_Init(socket) (1) |
| 145 | # define _GSocket_GUI_Destroy(socket) |
| 146 | # define _GSocket_Enable_Events(socket) |
| 147 | # define _GSocket_Disable_Events(socket) |
| 148 | # define _GSocket_Install_Callback(socket, event) |
| 149 | # define _GSocket_Uninstall_Callback(socket, event) |
| 150 | #endif /* wxUSE_GUI */ |
| 151 | |
| 152 | /* debugging helpers */ |
| 153 | #define __GSOCKET_DEBUG__ |
| 154 | #ifdef __GSOCKET_DEBUG__ |
| 155 | # define GSocket_Debug(args) printf args |
| 156 | #else |
| 157 | # define GSocket_Debug(args) |
| 158 | #endif /* __GSOCKET_DEBUG__ */ |
| 159 | |
| 160 | /* Global initialisers */ |
| 161 | |
| 162 | int GSocket_Init(void) |
| 163 | { |
| 164 | return 1; |
| 165 | } |
| 166 | |
| 167 | void GSocket_Cleanup(void) |
| 168 | { |
| 169 | } |
| 170 | |
| 171 | /* Constructors / Destructors for GSocket */ |
| 172 | |
| 173 | GSocket *GSocket_new(void) |
| 174 | { |
| 175 | int i, success; |
| 176 | GSocket *socket; |
| 177 | |
| 178 | socket = (GSocket *)malloc(sizeof(GSocket)); |
| 179 | |
| 180 | if (socket == NULL) |
| 181 | return NULL; |
| 182 | |
| 183 | socket->m_fd = INVALID_SOCKET; |
| 184 | for (i=0;i<GSOCK_MAX_EVENT;i++) |
| 185 | { |
| 186 | socket->m_cbacks[i] = NULL; |
| 187 | } |
| 188 | socket->m_detected = 0; |
| 189 | socket->m_local = NULL; |
| 190 | socket->m_peer = NULL; |
| 191 | socket->m_error = GSOCK_NOERROR; |
| 192 | socket->m_server = FALSE; |
| 193 | socket->m_stream = TRUE; |
| 194 | socket->m_gui_dependent = NULL; |
| 195 | socket->m_non_blocking = FALSE; |
| 196 | socket->m_timeout = 10*60*1000; |
| 197 | /* 10 minutes * 60 sec * 1000 millisec */ |
| 198 | socket->m_establishing = FALSE; |
| 199 | |
| 200 | /* Per-socket GUI-specific initialization */ |
| 201 | success = _GSocket_GUI_Init(socket); |
| 202 | if (!success) |
| 203 | { |
| 204 | free(socket); |
| 205 | return NULL; |
| 206 | } |
| 207 | |
| 208 | return socket; |
| 209 | } |
| 210 | |
| 211 | void GSocket_destroy(GSocket *socket) |
| 212 | { |
| 213 | assert(socket != NULL); |
| 214 | |
| 215 | /* Check that the socket is really shutdowned */ |
| 216 | if (socket->m_fd != INVALID_SOCKET) |
| 217 | GSocket_Shutdown(socket); |
| 218 | |
| 219 | /* Per-socket GUI-specific cleanup */ |
| 220 | _GSocket_GUI_Destroy(socket); |
| 221 | |
| 222 | /* Destroy private addresses */ |
| 223 | if (socket->m_local) |
| 224 | GAddress_destroy(socket->m_local); |
| 225 | |
| 226 | if (socket->m_peer) |
| 227 | GAddress_destroy(socket->m_peer); |
| 228 | |
| 229 | /* Destroy the socket itself */ |
| 230 | free(socket); |
| 231 | } |
| 232 | |
| 233 | /* GSocket_Shutdown: |
| 234 | * Disallow further read/write operations on this socket, close |
| 235 | * the fd and disable all callbacks. |
| 236 | */ |
| 237 | void GSocket_Shutdown(GSocket *socket) |
| 238 | { |
| 239 | int evt; |
| 240 | |
| 241 | assert(socket != NULL); |
| 242 | |
| 243 | /* If socket has been created, shutdown it */ |
| 244 | if (socket->m_fd != INVALID_SOCKET) |
| 245 | { |
| 246 | shutdown(socket->m_fd, 2); |
| 247 | soclose(socket->m_fd); |
| 248 | socket->m_fd = INVALID_SOCKET; |
| 249 | } |
| 250 | |
| 251 | /* Disable GUI callbacks */ |
| 252 | for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) |
| 253 | socket->m_cbacks[evt] = NULL; |
| 254 | |
| 255 | socket->m_detected = GSOCK_LOST_FLAG; |
| 256 | _GSocket_Disable_Events(socket); |
| 257 | } |
| 258 | |
| 259 | /* Address handling */ |
| 260 | |
| 261 | /* GSocket_SetLocal: |
| 262 | * GSocket_GetLocal: |
| 263 | * GSocket_SetPeer: |
| 264 | * GSocket_GetPeer: |
| 265 | * Set or get the local or peer address for this socket. The 'set' |
| 266 | * functions return GSOCK_NOERROR on success, an error code otherwise. |
| 267 | * The 'get' functions return a pointer to a GAddress object on success, |
| 268 | * or NULL otherwise, in which case they set the error code of the |
| 269 | * corresponding GSocket. |
| 270 | * |
| 271 | * Error codes: |
| 272 | * GSOCK_INVSOCK - the socket is not valid. |
| 273 | * GSOCK_INVADDR - the address is not valid. |
| 274 | */ |
| 275 | GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address) |
| 276 | { |
| 277 | assert(socket != NULL); |
| 278 | |
| 279 | /* the socket must be initialized, or it must be a server */ |
| 280 | if ((socket->m_fd != INVALID_SOCKET && !socket->m_server)) |
| 281 | { |
| 282 | socket->m_error = GSOCK_INVSOCK; |
| 283 | return GSOCK_INVSOCK; |
| 284 | } |
| 285 | |
| 286 | /* check address */ |
| 287 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 288 | { |
| 289 | socket->m_error = GSOCK_INVADDR; |
| 290 | return GSOCK_INVADDR; |
| 291 | } |
| 292 | |
| 293 | if (socket->m_local) |
| 294 | GAddress_destroy(socket->m_local); |
| 295 | |
| 296 | socket->m_local = GAddress_copy(address); |
| 297 | |
| 298 | return GSOCK_NOERROR; |
| 299 | } |
| 300 | |
| 301 | GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address) |
| 302 | { |
| 303 | assert(socket != NULL); |
| 304 | |
| 305 | /* check address */ |
| 306 | if (address == NULL || address->m_family == GSOCK_NOFAMILY) |
| 307 | { |
| 308 | socket->m_error = GSOCK_INVADDR; |
| 309 | return GSOCK_INVADDR; |
| 310 | } |
| 311 | |
| 312 | if (socket->m_peer) |
| 313 | GAddress_destroy(socket->m_peer); |
| 314 | |
| 315 | socket->m_peer = GAddress_copy(address); |
| 316 | |
| 317 | return GSOCK_NOERROR; |
| 318 | } |
| 319 | |
| 320 | GAddress *GSocket_GetLocal(GSocket *socket) |
| 321 | { |
| 322 | GAddress *address; |
| 323 | struct sockaddr addr; |
| 324 | SOCKLEN_T size = sizeof(addr); |
| 325 | GSocketError err; |
| 326 | |
| 327 | assert(socket != NULL); |
| 328 | |
| 329 | /* try to get it from the m_local var first */ |
| 330 | if (socket->m_local) |
| 331 | return GAddress_copy(socket->m_local); |
| 332 | |
| 333 | /* else, if the socket is initialized, try getsockname */ |
| 334 | if (socket->m_fd == INVALID_SOCKET) |
| 335 | { |
| 336 | socket->m_error = GSOCK_INVSOCK; |
| 337 | return NULL; |
| 338 | } |
| 339 | |
| 340 | if (getsockname(socket->m_fd, &addr, (SOCKLEN_T *) &size) < 0) |
| 341 | { |
| 342 | socket->m_error = GSOCK_IOERR; |
| 343 | return NULL; |
| 344 | } |
| 345 | |
| 346 | /* got a valid address from getsockname, create a GAddress object */ |
| 347 | address = GAddress_new(); |
| 348 | if (address == NULL) |
| 349 | { |
| 350 | socket->m_error = GSOCK_MEMERR; |
| 351 | return NULL; |
| 352 | } |
| 353 | |
| 354 | err = _GAddress_translate_from(address, &addr, size); |
| 355 | if (err != GSOCK_NOERROR) |
| 356 | { |
| 357 | GAddress_destroy(address); |
| 358 | socket->m_error = err; |
| 359 | return NULL; |
| 360 | } |
| 361 | |
| 362 | return address; |
| 363 | } |
| 364 | |
| 365 | GAddress *GSocket_GetPeer(GSocket *socket) |
| 366 | { |
| 367 | assert(socket != NULL); |
| 368 | |
| 369 | /* try to get it from the m_peer var */ |
| 370 | if (socket->m_peer) |
| 371 | return GAddress_copy(socket->m_peer); |
| 372 | |
| 373 | return NULL; |
| 374 | } |
| 375 | |
| 376 | /* Server specific parts */ |
| 377 | |
| 378 | /* GSocket_SetServer: |
| 379 | * Sets up this socket as a server. The local address must have been |
| 380 | * set with GSocket_SetLocal() before GSocket_SetServer() is called. |
| 381 | * Returns GSOCK_NOERROR on success, one of the following otherwise: |
| 382 | * |
| 383 | * Error codes: |
| 384 | * GSOCK_INVSOCK - the socket is in use. |
| 385 | * GSOCK_INVADDR - the local address has not been set. |
| 386 | * GSOCK_IOERR - low-level error. |
| 387 | */ |
| 388 | GSocketError GSocket_SetServer(GSocket *sck) |
| 389 | { |
| 390 | int arg = 1; |
| 391 | |
| 392 | assert(sck != NULL); |
| 393 | |
| 394 | /* must not be in use */ |
| 395 | if (sck->m_fd != INVALID_SOCKET) |
| 396 | { |
| 397 | sck->m_error = GSOCK_INVSOCK; |
| 398 | return GSOCK_INVSOCK; |
| 399 | } |
| 400 | |
| 401 | /* the local addr must have been set */ |
| 402 | if (!sck->m_local) |
| 403 | { |
| 404 | sck->m_error = GSOCK_INVADDR; |
| 405 | return GSOCK_INVADDR; |
| 406 | } |
| 407 | |
| 408 | /* Initialize all fields */ |
| 409 | sck->m_stream = TRUE; |
| 410 | sck->m_server = TRUE; |
| 411 | sck->m_oriented = TRUE; |
| 412 | |
| 413 | /* Create the socket */ |
| 414 | sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0); |
| 415 | |
| 416 | if (sck->m_fd == INVALID_SOCKET) |
| 417 | { |
| 418 | sck->m_error = GSOCK_IOERR; |
| 419 | return GSOCK_IOERR; |
| 420 | } |
| 421 | |
| 422 | ioctl(sck->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 423 | _GSocket_Enable_Events(sck); |
| 424 | |
| 425 | /* Bind to the local address, |
| 426 | * retrieve the actual address bound, |
| 427 | * and listen up to 5 connections. |
| 428 | */ |
| 429 | if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) || |
| 430 | (getsockname(sck->m_fd, |
| 431 | sck->m_local->m_addr, |
| 432 | (SOCKLEN_T *) &sck->m_local->m_len) != 0) || |
| 433 | (listen(sck->m_fd, 5) != 0)) |
| 434 | { |
| 435 | soclose(sck->m_fd); |
| 436 | sck->m_fd = INVALID_SOCKET; |
| 437 | sck->m_error = GSOCK_IOERR; |
| 438 | return GSOCK_IOERR; |
| 439 | } |
| 440 | |
| 441 | return GSOCK_NOERROR; |
| 442 | } |
| 443 | |
| 444 | /* GSocket_WaitConnection: |
| 445 | * Waits for an incoming client connection. Returns a pointer to |
| 446 | * a GSocket object, or NULL if there was an error, in which case |
| 447 | * the last error field will be updated for the calling GSocket. |
| 448 | * |
| 449 | * Error codes (set in the calling GSocket) |
| 450 | * GSOCK_INVSOCK - the socket is not valid or not a server. |
| 451 | * GSOCK_TIMEDOUT - timeout, no incoming connections. |
| 452 | * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking. |
| 453 | * GSOCK_MEMERR - couldn't allocate memory. |
| 454 | * GSOCK_IOERR - low-level error. |
| 455 | */ |
| 456 | GSocket *GSocket_WaitConnection(GSocket *socket) |
| 457 | { |
| 458 | struct sockaddr from; |
| 459 | SOCKLEN_T fromlen = sizeof(from); |
| 460 | GSocket *connection; |
| 461 | GSocketError err; |
| 462 | int arg = 1; |
| 463 | |
| 464 | assert(socket != NULL); |
| 465 | |
| 466 | /* Reenable CONNECTION events */ |
| 467 | _GSocket_Enable(socket, GSOCK_CONNECTION); |
| 468 | |
| 469 | /* If the socket has already been created, we exit immediately */ |
| 470 | if (socket->m_fd == INVALID_SOCKET || !socket->m_server) |
| 471 | { |
| 472 | socket->m_error = GSOCK_INVSOCK; |
| 473 | return NULL; |
| 474 | } |
| 475 | |
| 476 | /* Create a GSocket object for the new connection */ |
| 477 | connection = GSocket_new(); |
| 478 | |
| 479 | if (!connection) |
| 480 | { |
| 481 | socket->m_error = GSOCK_MEMERR; |
| 482 | return NULL; |
| 483 | } |
| 484 | |
| 485 | /* Wait for a connection (with timeout) */ |
| 486 | if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT) |
| 487 | { |
| 488 | GSocket_destroy(connection); |
| 489 | /* socket->m_error set by _GSocket_Input_Timeout */ |
| 490 | return NULL; |
| 491 | } |
| 492 | |
| 493 | connection->m_fd = accept(socket->m_fd, &from, (SOCKLEN_T *) &fromlen); |
| 494 | |
| 495 | if (connection->m_fd == INVALID_SOCKET) |
| 496 | { |
| 497 | if (errno == EWOULDBLOCK) |
| 498 | socket->m_error = GSOCK_WOULDBLOCK; |
| 499 | else |
| 500 | socket->m_error = GSOCK_IOERR; |
| 501 | |
| 502 | GSocket_destroy(connection); |
| 503 | return NULL; |
| 504 | } |
| 505 | |
| 506 | /* Initialize all fields */ |
| 507 | connection->m_server = FALSE; |
| 508 | connection->m_stream = TRUE; |
| 509 | connection->m_oriented = TRUE; |
| 510 | |
| 511 | /* Setup the peer address field */ |
| 512 | connection->m_peer = GAddress_new(); |
| 513 | if (!connection->m_peer) |
| 514 | { |
| 515 | GSocket_destroy(connection); |
| 516 | socket->m_error = GSOCK_MEMERR; |
| 517 | return NULL; |
| 518 | } |
| 519 | err = _GAddress_translate_from(connection->m_peer, &from, fromlen); |
| 520 | if (err != GSOCK_NOERROR) |
| 521 | { |
| 522 | GAddress_destroy(connection->m_peer); |
| 523 | GSocket_destroy(connection); |
| 524 | socket->m_error = err; |
| 525 | return NULL; |
| 526 | } |
| 527 | |
| 528 | ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 529 | _GSocket_Enable_Events(connection); |
| 530 | |
| 531 | return connection; |
| 532 | } |
| 533 | |
| 534 | /* Client specific parts */ |
| 535 | |
| 536 | /* GSocket_Connect: |
| 537 | * For stream (connection oriented) sockets, GSocket_Connect() tries |
| 538 | * to establish a client connection to a server using the peer address |
| 539 | * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the |
| 540 | * connection has been succesfully established, or one of the error |
| 541 | * codes listed below. Note that for nonblocking sockets, a return |
| 542 | * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection |
| 543 | * request can be completed later; you should use GSocket_Select() |
| 544 | * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the |
| 545 | * corresponding asynchronous events. |
| 546 | * |
| 547 | * For datagram (non connection oriented) sockets, GSocket_Connect() |
| 548 | * just sets the peer address established with GSocket_SetPeer() as |
| 549 | * default destination. |
| 550 | * |
| 551 | * Error codes: |
| 552 | * GSOCK_INVSOCK - the socket is in use or not valid. |
| 553 | * GSOCK_INVADDR - the peer address has not been established. |
| 554 | * GSOCK_TIMEDOUT - timeout, the connection failed. |
| 555 | * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only) |
| 556 | * GSOCK_MEMERR - couldn't allocate memory. |
| 557 | * GSOCK_IOERR - low-level error. |
| 558 | */ |
| 559 | GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) |
| 560 | { |
| 561 | int err, ret; |
| 562 | int arg = 1; |
| 563 | |
| 564 | assert(sck != NULL); |
| 565 | |
| 566 | /* Enable CONNECTION events (needed for nonblocking connections) */ |
| 567 | _GSocket_Enable(sck, GSOCK_CONNECTION); |
| 568 | |
| 569 | if (sck->m_fd != INVALID_SOCKET) |
| 570 | { |
| 571 | sck->m_error = GSOCK_INVSOCK; |
| 572 | return GSOCK_INVSOCK; |
| 573 | } |
| 574 | |
| 575 | if (!sck->m_peer) |
| 576 | { |
| 577 | sck->m_error = GSOCK_INVADDR; |
| 578 | return GSOCK_INVADDR; |
| 579 | } |
| 580 | |
| 581 | /* Streamed or dgram socket? */ |
| 582 | sck->m_stream = (stream == GSOCK_STREAMED); |
| 583 | sck->m_oriented = TRUE; |
| 584 | sck->m_server = FALSE; |
| 585 | sck->m_establishing = FALSE; |
| 586 | |
| 587 | /* Create the socket */ |
| 588 | sck->m_fd = socket(sck->m_peer->m_realfamily, |
| 589 | sck->m_stream? SOCK_STREAM : SOCK_DGRAM, 0); |
| 590 | |
| 591 | if (sck->m_fd == INVALID_SOCKET) |
| 592 | { |
| 593 | sck->m_error = GSOCK_IOERR; |
| 594 | return GSOCK_IOERR; |
| 595 | } |
| 596 | |
| 597 | ioctl(sck->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 598 | _GSocket_Enable_Events(sck); |
| 599 | |
| 600 | /* Connect it to the peer address, with a timeout (see below) */ |
| 601 | ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len); |
| 602 | |
| 603 | printf("connect on %d to %X (%d) returned %d, errno = %d\n", |
| 604 | sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len, ret, errno); |
| 605 | if (ret == -1) |
| 606 | { |
| 607 | err = errno; |
| 608 | |
| 609 | /* If connect failed with EINPROGRESS and the GSocket object |
| 610 | * is in blocking mode, we select() for the specified timeout |
| 611 | * checking for writability to see if the connection request |
| 612 | * completes. |
| 613 | */ |
| 614 | if ((err == EINPROGRESS) && (!sck->m_non_blocking)) |
| 615 | { |
| 616 | if (_GSocket_Output_Timeout(sck) == GSOCK_TIMEDOUT) |
| 617 | { |
| 618 | soclose(sck->m_fd); |
| 619 | sck->m_fd = INVALID_SOCKET; |
| 620 | /* sck->m_error is set in _GSocket_Output_Timeout */ |
| 621 | return GSOCK_TIMEDOUT; |
| 622 | } |
| 623 | else |
| 624 | { |
| 625 | int error; |
| 626 | SOCKLEN_T len = sizeof(error); |
| 627 | |
| 628 | getsockopt(sck->m_fd, SOL_SOCKET, SO_ERROR, (void*) &error, &len); |
| 629 | |
| 630 | if (!error) |
| 631 | return GSOCK_NOERROR; |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | /* If connect failed with EINPROGRESS and the GSocket object |
| 636 | * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK |
| 637 | * (and return GSOCK_WOULDBLOCK) but we don't close the socket; |
| 638 | * this way if the connection completes, a GSOCK_CONNECTION |
| 639 | * event will be generated, if enabled. |
| 640 | */ |
| 641 | if ((err == EINPROGRESS) && (sck->m_non_blocking)) |
| 642 | { |
| 643 | sck->m_establishing = TRUE; |
| 644 | sck->m_error = GSOCK_WOULDBLOCK; |
| 645 | return GSOCK_WOULDBLOCK; |
| 646 | } |
| 647 | |
| 648 | /* If connect failed with an error other than EINPROGRESS, |
| 649 | * then the call to GSocket_Connect has failed. |
| 650 | */ |
| 651 | soclose(sck->m_fd); |
| 652 | sck->m_fd = INVALID_SOCKET; |
| 653 | sck->m_error = GSOCK_IOERR; |
| 654 | return GSOCK_IOERR; |
| 655 | } |
| 656 | |
| 657 | return GSOCK_NOERROR; |
| 658 | } |
| 659 | |
| 660 | /* Datagram sockets */ |
| 661 | |
| 662 | /* GSocket_SetNonOriented: |
| 663 | * Sets up this socket as a non-connection oriented (datagram) socket. |
| 664 | * Before using this function, the local address must have been set |
| 665 | * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR |
| 666 | * on success, or one of the following otherwise. |
| 667 | * |
| 668 | * Error codes: |
| 669 | * GSOCK_INVSOCK - the socket is in use. |
| 670 | * GSOCK_INVADDR - the local address has not been set. |
| 671 | * GSOCK_IOERR - low-level error. |
| 672 | */ |
| 673 | GSocketError GSocket_SetNonOriented(GSocket *sck) |
| 674 | { |
| 675 | int arg = 1; |
| 676 | |
| 677 | assert(sck != NULL); |
| 678 | |
| 679 | if (sck->m_fd != INVALID_SOCKET) |
| 680 | { |
| 681 | sck->m_error = GSOCK_INVSOCK; |
| 682 | return GSOCK_INVSOCK; |
| 683 | } |
| 684 | |
| 685 | if (!sck->m_local) |
| 686 | { |
| 687 | sck->m_error = GSOCK_INVADDR; |
| 688 | return GSOCK_INVADDR; |
| 689 | } |
| 690 | |
| 691 | /* Initialize all fields */ |
| 692 | sck->m_stream = FALSE; |
| 693 | sck->m_server = FALSE; |
| 694 | sck->m_oriented = FALSE; |
| 695 | |
| 696 | /* Create the socket */ |
| 697 | sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0); |
| 698 | |
| 699 | if (sck->m_fd == INVALID_SOCKET) |
| 700 | { |
| 701 | sck->m_error = GSOCK_IOERR; |
| 702 | return GSOCK_IOERR; |
| 703 | } |
| 704 | |
| 705 | ioctl(sck->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); |
| 706 | _GSocket_Enable_Events(sck); |
| 707 | |
| 708 | /* Bind to the local address, |
| 709 | * and retrieve the actual address bound. |
| 710 | */ |
| 711 | if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) || |
| 712 | (getsockname(sck->m_fd, |
| 713 | sck->m_local->m_addr, |
| 714 | (SOCKLEN_T *) &sck->m_local->m_len) != 0)) |
| 715 | { |
| 716 | soclose(sck->m_fd); |
| 717 | sck->m_fd = INVALID_SOCKET; |
| 718 | sck->m_error = GSOCK_IOERR; |
| 719 | return GSOCK_IOERR; |
| 720 | } |
| 721 | |
| 722 | return GSOCK_NOERROR; |
| 723 | } |
| 724 | |
| 725 | /* Generic IO */ |
| 726 | |
| 727 | /* Like recv(), send(), ... */ |
| 728 | int GSocket_Read(GSocket *socket, char *buffer, int size) |
| 729 | { |
| 730 | int ret; |
| 731 | |
| 732 | assert(socket != NULL); |
| 733 | |
| 734 | /* Reenable INPUT events */ |
| 735 | _GSocket_Enable(socket, GSOCK_INPUT); |
| 736 | |
| 737 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 738 | { |
| 739 | socket->m_error = GSOCK_INVSOCK; |
| 740 | return -1; |
| 741 | } |
| 742 | |
| 743 | /* If the socket is blocking, wait for data (with a timeout) */ |
| 744 | if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT) |
| 745 | return -1; |
| 746 | |
| 747 | /* Read the data */ |
| 748 | if (socket->m_stream) |
| 749 | ret = _GSocket_Recv_Stream(socket, buffer, size); |
| 750 | else |
| 751 | ret = _GSocket_Recv_Dgram(socket, buffer, size); |
| 752 | |
| 753 | if (ret == -1) |
| 754 | { |
| 755 | if (errno == EWOULDBLOCK) |
| 756 | socket->m_error = GSOCK_WOULDBLOCK; |
| 757 | else |
| 758 | socket->m_error = GSOCK_IOERR; |
| 759 | } |
| 760 | |
| 761 | return ret; |
| 762 | } |
| 763 | |
| 764 | int GSocket_Write(GSocket *socket, const char *buffer, int size) |
| 765 | { |
| 766 | int ret; |
| 767 | |
| 768 | assert(socket != NULL); |
| 769 | |
| 770 | GSocket_Debug(( "GSocket_Write #1, size %d\n", size )); |
| 771 | |
| 772 | if (socket->m_fd == INVALID_SOCKET || socket->m_server) |
| 773 | { |
| 774 | socket->m_error = GSOCK_INVSOCK; |
| 775 | return -1; |
| 776 | } |
| 777 | |
| 778 | GSocket_Debug(( "GSocket_Write #2, size %d\n", size )); |
| 779 | |
| 780 | /* If the socket is blocking, wait for writability (with a timeout) */ |
| 781 | if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT) |
| 782 | return -1; |
| 783 | |
| 784 | GSocket_Debug(( "GSocket_Write #3, size %d\n", size )); |
| 785 | |
| 786 | /* Write the data */ |
| 787 | if (socket->m_stream) |
| 788 | ret = _GSocket_Send_Stream(socket, buffer, size); |
| 789 | else |
| 790 | ret = _GSocket_Send_Dgram(socket, buffer, size); |
| 791 | |
| 792 | GSocket_Debug(( "GSocket_Write #4, size %d\n", size )); |
| 793 | |
| 794 | if (ret == -1) |
| 795 | { |
| 796 | if (errno == EWOULDBLOCK) |
| 797 | { |
| 798 | socket->m_error = GSOCK_WOULDBLOCK; |
| 799 | GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" )); |
| 800 | } |
| 801 | else |
| 802 | { |
| 803 | socket->m_error = GSOCK_IOERR; |
| 804 | GSocket_Debug(( "GSocket_Write error IOERR\n" )); |
| 805 | } |
| 806 | |
| 807 | /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect |
| 808 | * in MSW). Once the first OUTPUT event is received, users can assume |
| 809 | * that the socket is writable until a read operation fails. Only then |
| 810 | * will further OUTPUT events be posted. |
| 811 | */ |
| 812 | _GSocket_Enable(socket, GSOCK_OUTPUT); |
| 813 | return -1; |
| 814 | } |
| 815 | |
| 816 | GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret )); |
| 817 | |
| 818 | return ret; |
| 819 | } |
| 820 | |
| 821 | /* GSocket_Select: |
| 822 | * Polls the socket to determine its status. This function will |
| 823 | * check for the events specified in the 'flags' parameter, and |
| 824 | * it will return a mask indicating which operations can be |
| 825 | * performed. This function won't block, regardless of the |
| 826 | * mode (blocking | nonblocking) of the socket. |
| 827 | */ |
| 828 | GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags) |
| 829 | { |
| 830 | #if defined(wxUSE_GUI) && !wxUSE_GUI |
| 831 | |
| 832 | GSocketEventFlags result = 0; |
| 833 | fd_set readfds; |
| 834 | fd_set writefds; |
| 835 | fd_set exceptfds; |
| 836 | struct timeval tv; |
| 837 | |
| 838 | /* Do not use a static struct, Linux can garble it */ |
| 839 | tv.tv_sec = 0; |
| 840 | tv.tv_usec = 0; |
| 841 | |
| 842 | assert(socket != NULL); |
| 843 | |
| 844 | FD_ZERO(&readfds); |
| 845 | FD_ZERO(&writefds); |
| 846 | FD_ZERO(&exceptfds); |
| 847 | FD_SET(socket->m_fd, &readfds); |
| 848 | FD_SET(socket->m_fd, &writefds); |
| 849 | FD_SET(socket->m_fd, &exceptfds); |
| 850 | |
| 851 | /* Check known state first */ |
| 852 | result |= (GSOCK_CONNECTION_FLAG & socket->m_detected & flags); |
| 853 | result |= (GSOCK_LOST_FLAG & socket->m_detected & flags); |
| 854 | |
| 855 | /* Try select now */ |
| 856 | if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0) |
| 857 | return result; |
| 858 | |
| 859 | /* Check for readability */ |
| 860 | if (FD_ISSET(socket->m_fd, &readfds)) |
| 861 | { |
| 862 | char c; |
| 863 | |
| 864 | if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0) |
| 865 | { |
| 866 | result |= (GSOCK_INPUT_FLAG & flags); |
| 867 | } |
| 868 | else |
| 869 | { |
| 870 | if (socket->m_server && socket->m_stream) |
| 871 | { |
| 872 | result |= (GSOCK_CONNECTION_FLAG & flags); |
| 873 | socket->m_detected |= GSOCK_CONNECTION_FLAG; |
| 874 | } |
| 875 | else |
| 876 | { |
| 877 | result |= (GSOCK_LOST_FLAG & flags); |
| 878 | socket->m_detected = GSOCK_LOST_FLAG; |
| 879 | } |
| 880 | } |
| 881 | } |
| 882 | |
| 883 | /* Check for writability */ |
| 884 | if (FD_ISSET(socket->m_fd, &writefds)) |
| 885 | { |
| 886 | if (socket->m_establishing && !socket->m_server) |
| 887 | { |
| 888 | int error; |
| 889 | SOCKLEN_T len = sizeof(error); |
| 890 | |
| 891 | socket->m_establishing = FALSE; |
| 892 | |
| 893 | getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len); |
| 894 | |
| 895 | if (error) |
| 896 | { |
| 897 | result |= (GSOCK_LOST_FLAG & flags); |
| 898 | socket->m_detected = GSOCK_LOST_FLAG; |
| 899 | } |
| 900 | else |
| 901 | { |
| 902 | result |= (GSOCK_CONNECTION_FLAG & flags); |
| 903 | socket->m_detected |= GSOCK_CONNECTION_FLAG; |
| 904 | } |
| 905 | } |
| 906 | else |
| 907 | { |
| 908 | result |= (GSOCK_OUTPUT_FLAG & flags); |
| 909 | } |
| 910 | } |
| 911 | |
| 912 | /* Check for exceptions and errors (is this useful in Unices?) */ |
| 913 | if (FD_ISSET(socket->m_fd, &exceptfds)) |
| 914 | { |
| 915 | result |= (GSOCK_LOST_FLAG & flags); |
| 916 | socket->m_establishing = FALSE; |
| 917 | socket->m_detected = GSOCK_LOST_FLAG; |
| 918 | } |
| 919 | |
| 920 | return result; |
| 921 | |
| 922 | #else |
| 923 | |
| 924 | assert(socket != NULL); |
| 925 | return flags & socket->m_detected; |
| 926 | |
| 927 | #endif /* !wxUSE_GUI */ |
| 928 | } |
| 929 | |
| 930 | /* Flags */ |
| 931 | |
| 932 | /* GSocket_SetNonBlocking: |
| 933 | * Sets the socket to non-blocking mode. All IO calls will return |
| 934 | * immediately. |
| 935 | */ |
| 936 | void GSocket_SetNonBlocking(GSocket *socket, int non_block) |
| 937 | { |
| 938 | assert(socket != NULL); |
| 939 | |
| 940 | GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) ); |
| 941 | |
| 942 | socket->m_non_blocking = non_block; |
| 943 | } |
| 944 | |
| 945 | /* GSocket_SetTimeout: |
| 946 | * Sets the timeout for blocking calls. Time is expressed in |
| 947 | * milliseconds. |
| 948 | */ |
| 949 | void GSocket_SetTimeout(GSocket *socket, unsigned long millisec) |
| 950 | { |
| 951 | assert(socket != NULL); |
| 952 | |
| 953 | socket->m_timeout = millisec; |
| 954 | } |
| 955 | |
| 956 | /* GSocket_GetError: |
| 957 | * Returns the last error occured for this socket. Note that successful |
| 958 | * operations do not clear this back to GSOCK_NOERROR, so use it only |
| 959 | * after an error. |
| 960 | */ |
| 961 | GSocketError GSocket_GetError(GSocket *socket) |
| 962 | { |
| 963 | assert(socket != NULL); |
| 964 | |
| 965 | return socket->m_error; |
| 966 | } |
| 967 | |
| 968 | /* Callbacks */ |
| 969 | |
| 970 | /* GSOCK_INPUT: |
| 971 | * There is data to be read in the input buffer. If, after a read |
| 972 | * operation, there is still data available, the callback function will |
| 973 | * be called again. |
| 974 | * GSOCK_OUTPUT: |
| 975 | * The socket is available for writing. That is, the next write call |
| 976 | * won't block. This event is generated only once, when the connection is |
| 977 | * first established, and then only if a call failed with GSOCK_WOULDBLOCK, |
| 978 | * when the output buffer empties again. This means that the app should |
| 979 | * assume that it can write since the first OUTPUT event, and no more |
| 980 | * OUTPUT events will be generated unless an error occurs. |
| 981 | * GSOCK_CONNECTION: |
| 982 | * Connection succesfully established, for client sockets, or incoming |
| 983 | * client connection, for server sockets. Wait for this event (also watch |
| 984 | * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call. |
| 985 | * GSOCK_LOST: |
| 986 | * The connection is lost (or a connection request failed); this could |
| 987 | * be due to a failure, or due to the peer closing it gracefully. |
| 988 | */ |
| 989 | |
| 990 | /* GSocket_SetCallback: |
| 991 | * Enables the callbacks specified by 'flags'. Note that 'flags' |
| 992 | * may be a combination of flags OR'ed toghether, so the same |
| 993 | * callback function can be made to accept different events. |
| 994 | * The callback function must have the following prototype: |
| 995 | * |
| 996 | * void function(GSocket *socket, GSocketEvent event, char *cdata) |
| 997 | */ |
| 998 | void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags, |
| 999 | GSocketCallback callback, char *cdata) |
| 1000 | { |
| 1001 | int count; |
| 1002 | |
| 1003 | assert(socket != NULL); |
| 1004 | |
| 1005 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 1006 | { |
| 1007 | if ((flags & (1 << count)) != 0) |
| 1008 | { |
| 1009 | printf("Setting callback no %d for socket at %X to address %X,data %X\n", |
| 1010 | count, socket, callback, cdata); |
| 1011 | socket->m_cbacks[count] = callback; |
| 1012 | socket->m_data[count] = cdata; |
| 1013 | } |
| 1014 | } |
| 1015 | } |
| 1016 | |
| 1017 | /* GSocket_UnsetCallback: |
| 1018 | * Disables all callbacks specified by 'flags', which may be a |
| 1019 | * combination of flags OR'ed toghether. |
| 1020 | */ |
| 1021 | void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags) |
| 1022 | { |
| 1023 | int count; |
| 1024 | |
| 1025 | assert(socket != NULL); |
| 1026 | |
| 1027 | for (count = 0; count < GSOCK_MAX_EVENT; count++) |
| 1028 | { |
| 1029 | if ((flags & (1 << count)) != 0) |
| 1030 | { |
| 1031 | printf("Removing callback no %d for socket at %X", |
| 1032 | count, socket); |
| 1033 | socket->m_cbacks[count] = NULL; |
| 1034 | socket->m_data[count] = NULL; |
| 1035 | } |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | |
| 1040 | #define CALL_CALLBACK(socket, event) { \ |
| 1041 | _GSocket_Disable(socket, event); \ |
| 1042 | if (socket->m_cbacks[event]){ \ |
| 1043 | printf("Call callback for event %d, socket %X: %X, %X\n", event, \ |
| 1044 | socket, socket->m_cbacks[event], socket->m_data[event]); \ |
| 1045 | socket->m_cbacks[event](socket, event, socket->m_data[event]); \ |
| 1046 | } \ |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | void _GSocket_Enable(GSocket *socket, GSocketEvent event) |
| 1051 | { |
| 1052 | socket->m_detected &= ~(1 << event); |
| 1053 | _GSocket_Install_Callback(socket, event); |
| 1054 | } |
| 1055 | |
| 1056 | void _GSocket_Disable(GSocket *socket, GSocketEvent event) |
| 1057 | { |
| 1058 | socket->m_detected |= (1 << event); |
| 1059 | _GSocket_Uninstall_Callback(socket, event); |
| 1060 | } |
| 1061 | |
| 1062 | /* _GSocket_Input_Timeout: |
| 1063 | * For blocking sockets, wait until data is available or |
| 1064 | * until timeout ellapses. |
| 1065 | */ |
| 1066 | GSocketError _GSocket_Input_Timeout(GSocket *socket) |
| 1067 | { |
| 1068 | struct timeval tv; |
| 1069 | fd_set readfds; |
| 1070 | int ret; |
| 1071 | |
| 1072 | /* Linux select() will overwrite the struct on return */ |
| 1073 | tv.tv_sec = (socket->m_timeout / 1000); |
| 1074 | tv.tv_usec = (socket->m_timeout % 1000) * 1000; |
| 1075 | |
| 1076 | if (!socket->m_non_blocking) |
| 1077 | { |
| 1078 | FD_ZERO(&readfds); |
| 1079 | FD_SET(socket->m_fd, &readfds); |
| 1080 | ret = select(socket->m_fd + 1, &readfds, NULL, NULL, &tv); |
| 1081 | if (ret == 0) |
| 1082 | { |
| 1083 | GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" )); |
| 1084 | socket->m_error = GSOCK_TIMEDOUT; |
| 1085 | return GSOCK_TIMEDOUT; |
| 1086 | } |
| 1087 | if (ret == -1) |
| 1088 | { |
| 1089 | GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" )); |
| 1090 | if (errno == EBADF) GSocket_Debug(( "Invalid file descriptor\n" )); |
| 1091 | if (errno == EINTR) GSocket_Debug(( "A non blocked signal was caught\n" )); |
| 1092 | if (errno == EINVAL) GSocket_Debug(( "The highest number descriptor is negative\n" )); |
| 1093 | if (errno == ENOMEM) GSocket_Debug(( "Not enough memory\n" )); |
| 1094 | socket->m_error = GSOCK_TIMEDOUT; |
| 1095 | return GSOCK_TIMEDOUT; |
| 1096 | } |
| 1097 | } |
| 1098 | return GSOCK_NOERROR; |
| 1099 | } |
| 1100 | |
| 1101 | /* _GSocket_Output_Timeout: |
| 1102 | * For blocking sockets, wait until data can be sent without |
| 1103 | * blocking or until timeout ellapses. |
| 1104 | */ |
| 1105 | GSocketError _GSocket_Output_Timeout(GSocket *socket) |
| 1106 | { |
| 1107 | struct timeval tv; |
| 1108 | fd_set writefds; |
| 1109 | int ret; |
| 1110 | |
| 1111 | /* Linux select() will overwrite the struct on return */ |
| 1112 | tv.tv_sec = (socket->m_timeout / 1000); |
| 1113 | tv.tv_usec = (socket->m_timeout % 1000) * 1000; |
| 1114 | |
| 1115 | GSocket_Debug( ("m_non_blocking has: %d\n", (int)socket->m_non_blocking) ); |
| 1116 | |
| 1117 | if (!socket->m_non_blocking) |
| 1118 | { |
| 1119 | FD_ZERO(&writefds); |
| 1120 | FD_SET(socket->m_fd, &writefds); |
| 1121 | ret = select(socket->m_fd + 1, NULL, &writefds, NULL, &tv); |
| 1122 | if (ret == 0) |
| 1123 | { |
| 1124 | GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" )); |
| 1125 | socket->m_error = GSOCK_TIMEDOUT; |
| 1126 | return GSOCK_TIMEDOUT; |
| 1127 | } |
| 1128 | if (ret == -1) |
| 1129 | { |
| 1130 | GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" )); |
| 1131 | if (errno == EBADF) GSocket_Debug(( "Invalid file descriptor\n" )); |
| 1132 | if (errno == EINTR) GSocket_Debug(( "A non blocked signal was caught\n" )); |
| 1133 | if (errno == EINVAL) GSocket_Debug(( "The highest number descriptor is negative\n" )); |
| 1134 | if (errno == ENOMEM) GSocket_Debug(( "Not enough memory\n" )); |
| 1135 | socket->m_error = GSOCK_TIMEDOUT; |
| 1136 | return GSOCK_TIMEDOUT; |
| 1137 | } |
| 1138 | if ( ! FD_ISSET(socket->m_fd, &writefds) ) |
| 1139 | GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" )); |
| 1140 | else |
| 1141 | GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" )); |
| 1142 | } |
| 1143 | else |
| 1144 | { |
| 1145 | GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" )); |
| 1146 | } |
| 1147 | |
| 1148 | return GSOCK_NOERROR; |
| 1149 | } |
| 1150 | |
| 1151 | int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size) |
| 1152 | { |
| 1153 | return recv(socket->m_fd, buffer, size, 0); |
| 1154 | } |
| 1155 | |
| 1156 | int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size) |
| 1157 | { |
| 1158 | struct sockaddr from; |
| 1159 | SOCKLEN_T fromlen = sizeof(from); |
| 1160 | int ret; |
| 1161 | GSocketError err; |
| 1162 | |
| 1163 | fromlen = sizeof(from); |
| 1164 | |
| 1165 | ret = recvfrom(socket->m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen); |
| 1166 | |
| 1167 | if (ret == -1) |
| 1168 | return -1; |
| 1169 | |
| 1170 | /* Translate a system address into a GSocket address */ |
| 1171 | if (!socket->m_peer) |
| 1172 | { |
| 1173 | socket->m_peer = GAddress_new(); |
| 1174 | if (!socket->m_peer) |
| 1175 | { |
| 1176 | socket->m_error = GSOCK_MEMERR; |
| 1177 | return -1; |
| 1178 | } |
| 1179 | } |
| 1180 | err = _GAddress_translate_from(socket->m_peer, &from, fromlen); |
| 1181 | if (err != GSOCK_NOERROR) |
| 1182 | { |
| 1183 | GAddress_destroy(socket->m_peer); |
| 1184 | socket->m_peer = NULL; |
| 1185 | socket->m_error = err; |
| 1186 | return -1; |
| 1187 | } |
| 1188 | |
| 1189 | return ret; |
| 1190 | } |
| 1191 | |
| 1192 | int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size) |
| 1193 | { |
| 1194 | int ret; |
| 1195 | |
| 1196 | #ifdef __EMX__ |
| 1197 | MASK_SIGNAL(); |
| 1198 | ret = send(socket->m_fd, buffer, size, 0); |
| 1199 | UNMASK_SIGNAL(); |
| 1200 | #else |
| 1201 | ret = send(socket->m_fd, (char *)buffer, size, 0); |
| 1202 | #endif |
| 1203 | return ret; |
| 1204 | } |
| 1205 | |
| 1206 | int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size) |
| 1207 | { |
| 1208 | struct sockaddr *addr; |
| 1209 | int len, ret; |
| 1210 | GSocketError err; |
| 1211 | |
| 1212 | if (!socket->m_peer) |
| 1213 | { |
| 1214 | socket->m_error = GSOCK_INVADDR; |
| 1215 | return -1; |
| 1216 | } |
| 1217 | |
| 1218 | err = _GAddress_translate_to(socket->m_peer, &addr, &len); |
| 1219 | if (err != GSOCK_NOERROR) |
| 1220 | { |
| 1221 | socket->m_error = err; |
| 1222 | return -1; |
| 1223 | } |
| 1224 | |
| 1225 | #ifdef __EMX__ |
| 1226 | MASK_SIGNAL(); |
| 1227 | ret = sendto(socket->m_fd, buffer, size, 0, addr, len); |
| 1228 | UNMASK_SIGNAL(); |
| 1229 | #else |
| 1230 | ret = sendto(socket->m_fd, (char *)buffer, size, 0, addr, len); |
| 1231 | #endif |
| 1232 | |
| 1233 | /* Frees memory allocated from _GAddress_translate_to */ |
| 1234 | free(addr); |
| 1235 | |
| 1236 | return ret; |
| 1237 | } |
| 1238 | |
| 1239 | void _GSocket_Detected_Read(GSocket *socket) |
| 1240 | { |
| 1241 | char c; |
| 1242 | |
| 1243 | if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0) |
| 1244 | { |
| 1245 | CALL_CALLBACK(socket, GSOCK_INPUT); |
| 1246 | } |
| 1247 | else |
| 1248 | { |
| 1249 | if (socket->m_server && socket->m_stream) |
| 1250 | { |
| 1251 | CALL_CALLBACK(socket, GSOCK_CONNECTION); |
| 1252 | } |
| 1253 | else |
| 1254 | { |
| 1255 | CALL_CALLBACK(socket, GSOCK_LOST); |
| 1256 | } |
| 1257 | } |
| 1258 | } |
| 1259 | |
| 1260 | void _GSocket_Detected_Write(GSocket *socket) |
| 1261 | { |
| 1262 | if (socket->m_establishing && !socket->m_server) |
| 1263 | { |
| 1264 | int error; |
| 1265 | SOCKLEN_T len = sizeof(error); |
| 1266 | |
| 1267 | socket->m_establishing = FALSE; |
| 1268 | |
| 1269 | getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len); |
| 1270 | |
| 1271 | if (error) |
| 1272 | { |
| 1273 | CALL_CALLBACK(socket, GSOCK_LOST); |
| 1274 | } |
| 1275 | else |
| 1276 | { |
| 1277 | CALL_CALLBACK(socket, GSOCK_CONNECTION); |
| 1278 | /* We have to fire this event by hand because CONNECTION (for clients) |
| 1279 | * and OUTPUT are internally the same and we just disabled CONNECTION |
| 1280 | * events with the above macro. |
| 1281 | */ |
| 1282 | CALL_CALLBACK(socket, GSOCK_OUTPUT); |
| 1283 | } |
| 1284 | } |
| 1285 | else |
| 1286 | { |
| 1287 | CALL_CALLBACK(socket, GSOCK_OUTPUT); |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | /* |
| 1292 | * ------------------------------------------------------------------------- |
| 1293 | * GAddress |
| 1294 | * ------------------------------------------------------------------------- |
| 1295 | */ |
| 1296 | |
| 1297 | /* CHECK_ADDRESS verifies that the current address family is either |
| 1298 | * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it |
| 1299 | * initalizes it to be a GSOCK_*family*. In other cases, it returns |
| 1300 | * an appropiate error code. |
| 1301 | * |
| 1302 | * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error. |
| 1303 | */ |
| 1304 | #define CHECK_ADDRESS(address, family) \ |
| 1305 | { \ |
| 1306 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1307 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1308 | return address->m_error; \ |
| 1309 | if (address->m_family != GSOCK_##family) \ |
| 1310 | { \ |
| 1311 | address->m_error = GSOCK_INVADDR; \ |
| 1312 | return GSOCK_INVADDR; \ |
| 1313 | } \ |
| 1314 | } |
| 1315 | |
| 1316 | #define CHECK_ADDRESS_RETVAL(address, family, retval) \ |
| 1317 | { \ |
| 1318 | if (address->m_family == GSOCK_NOFAMILY) \ |
| 1319 | if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ |
| 1320 | return retval; \ |
| 1321 | if (address->m_family != GSOCK_##family) \ |
| 1322 | { \ |
| 1323 | address->m_error = GSOCK_INVADDR; \ |
| 1324 | return retval; \ |
| 1325 | } \ |
| 1326 | } |
| 1327 | |
| 1328 | |
| 1329 | GAddress *GAddress_new(void) |
| 1330 | { |
| 1331 | GAddress *address; |
| 1332 | |
| 1333 | if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1334 | return NULL; |
| 1335 | |
| 1336 | address->m_family = GSOCK_NOFAMILY; |
| 1337 | address->m_addr = NULL; |
| 1338 | address->m_len = 0; |
| 1339 | |
| 1340 | return address; |
| 1341 | } |
| 1342 | |
| 1343 | GAddress *GAddress_copy(GAddress *address) |
| 1344 | { |
| 1345 | GAddress *addr2; |
| 1346 | |
| 1347 | assert(address != NULL); |
| 1348 | |
| 1349 | if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL) |
| 1350 | return NULL; |
| 1351 | |
| 1352 | memcpy(addr2, address, sizeof(GAddress)); |
| 1353 | |
| 1354 | if (address->m_addr) |
| 1355 | { |
| 1356 | addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len); |
| 1357 | if (addr2->m_addr == NULL) |
| 1358 | { |
| 1359 | free(addr2); |
| 1360 | return NULL; |
| 1361 | } |
| 1362 | memcpy(addr2->m_addr, address->m_addr, addr2->m_len); |
| 1363 | } |
| 1364 | |
| 1365 | return addr2; |
| 1366 | } |
| 1367 | |
| 1368 | void GAddress_destroy(GAddress *address) |
| 1369 | { |
| 1370 | assert(address != NULL); |
| 1371 | |
| 1372 | if (address->m_addr) |
| 1373 | free(address->m_addr); |
| 1374 | |
| 1375 | /* free(address); */ |
| 1376 | } |
| 1377 | |
| 1378 | void GAddress_SetFamily(GAddress *address, GAddressType type) |
| 1379 | { |
| 1380 | assert(address != NULL); |
| 1381 | |
| 1382 | address->m_family = type; |
| 1383 | } |
| 1384 | |
| 1385 | GAddressType GAddress_GetFamily(GAddress *address) |
| 1386 | { |
| 1387 | assert(address != NULL); |
| 1388 | |
| 1389 | return address->m_family; |
| 1390 | } |
| 1391 | |
| 1392 | GSocketError _GAddress_translate_from(GAddress *address, |
| 1393 | struct sockaddr *addr, int len) |
| 1394 | { |
| 1395 | address->m_realfamily = addr->sa_family; |
| 1396 | switch (addr->sa_family) |
| 1397 | { |
| 1398 | case AF_INET: |
| 1399 | address->m_family = GSOCK_INET; |
| 1400 | break; |
| 1401 | case AF_UNIX: |
| 1402 | address->m_family = GSOCK_UNIX; |
| 1403 | break; |
| 1404 | #ifdef AF_INET6 |
| 1405 | case AF_INET6: |
| 1406 | address->m_family = GSOCK_INET6; |
| 1407 | break; |
| 1408 | #endif |
| 1409 | default: |
| 1410 | { |
| 1411 | address->m_error = GSOCK_INVOP; |
| 1412 | return GSOCK_INVOP; |
| 1413 | } |
| 1414 | } |
| 1415 | |
| 1416 | if (address->m_addr) |
| 1417 | free(address->m_addr); |
| 1418 | |
| 1419 | address->m_len = len; |
| 1420 | address->m_addr = (struct sockaddr *)malloc(len); |
| 1421 | |
| 1422 | if (address->m_addr == NULL) |
| 1423 | { |
| 1424 | address->m_error = GSOCK_MEMERR; |
| 1425 | return GSOCK_MEMERR; |
| 1426 | } |
| 1427 | memcpy(address->m_addr, addr, len); |
| 1428 | |
| 1429 | return GSOCK_NOERROR; |
| 1430 | } |
| 1431 | |
| 1432 | GSocketError _GAddress_translate_to(GAddress *address, |
| 1433 | struct sockaddr **addr, int *len) |
| 1434 | { |
| 1435 | if (!address->m_addr) |
| 1436 | { |
| 1437 | address->m_error = GSOCK_INVADDR; |
| 1438 | return GSOCK_INVADDR; |
| 1439 | } |
| 1440 | |
| 1441 | *len = address->m_len; |
| 1442 | *addr = (struct sockaddr *)malloc(address->m_len); |
| 1443 | if (*addr == NULL) |
| 1444 | { |
| 1445 | address->m_error = GSOCK_MEMERR; |
| 1446 | return GSOCK_MEMERR; |
| 1447 | } |
| 1448 | |
| 1449 | memcpy(*addr, address->m_addr, address->m_len); |
| 1450 | return GSOCK_NOERROR; |
| 1451 | } |
| 1452 | |
| 1453 | /* |
| 1454 | * ------------------------------------------------------------------------- |
| 1455 | * Internet address family |
| 1456 | * ------------------------------------------------------------------------- |
| 1457 | */ |
| 1458 | |
| 1459 | GSocketError _GAddress_Init_INET(GAddress *address) |
| 1460 | { |
| 1461 | address->m_len = sizeof(struct sockaddr_in); |
| 1462 | address->m_addr = (struct sockaddr *) malloc(address->m_len); |
| 1463 | if (address->m_addr == NULL) |
| 1464 | { |
| 1465 | address->m_error = GSOCK_MEMERR; |
| 1466 | return GSOCK_MEMERR; |
| 1467 | } |
| 1468 | |
| 1469 | address->m_family = GSOCK_INET; |
| 1470 | address->m_realfamily = PF_INET; |
| 1471 | ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; |
| 1472 | ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; |
| 1473 | |
| 1474 | return GSOCK_NOERROR; |
| 1475 | } |
| 1476 | |
| 1477 | GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) |
| 1478 | { |
| 1479 | struct hostent *he; |
| 1480 | struct in_addr *addr; |
| 1481 | |
| 1482 | assert(address != NULL); |
| 1483 | |
| 1484 | CHECK_ADDRESS(address, INET); |
| 1485 | |
| 1486 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1487 | |
| 1488 | /* If it is a numeric host name, convert it now */ |
| 1489 | #if defined(HAVE_INET_ATON) |
| 1490 | if (inet_aton(hostname, addr) == 0) |
| 1491 | { |
| 1492 | #elif defined(HAVE_INET_ADDR) |
| 1493 | addr->s_addr = inet_addr(hostname); |
| 1494 | if ( (addr->s_addr == -1 ) |
| 1495 | { |
| 1496 | #else |
| 1497 | /* Use gethostbyname by default */ |
| 1498 | int val = 1; //VA doesn't like constants in conditional expressions at all |
| 1499 | if (val) |
| 1500 | { |
| 1501 | #endif |
| 1502 | struct in_addr *array_addr; |
| 1503 | |
| 1504 | /* It is a real name, we solve it */ |
| 1505 | if ((he = gethostbyname(hostname)) == NULL) |
| 1506 | { |
| 1507 | /* Reset to invalid address */ |
| 1508 | addr->s_addr = INADDR_NONE; |
| 1509 | address->m_error = GSOCK_NOHOST; |
| 1510 | return GSOCK_NOHOST; |
| 1511 | } |
| 1512 | array_addr = (struct in_addr *) *(he->h_addr_list); |
| 1513 | addr->s_addr = array_addr[0].s_addr; |
| 1514 | } |
| 1515 | return GSOCK_NOERROR; |
| 1516 | } |
| 1517 | |
| 1518 | GSocketError GAddress_INET_SetAnyAddress(GAddress *address) |
| 1519 | { |
| 1520 | return GAddress_INET_SetHostAddress(address, INADDR_ANY); |
| 1521 | } |
| 1522 | |
| 1523 | GSocketError GAddress_INET_SetHostAddress(GAddress *address, |
| 1524 | unsigned long hostaddr) |
| 1525 | { |
| 1526 | struct in_addr *addr; |
| 1527 | |
| 1528 | assert(address != NULL); |
| 1529 | |
| 1530 | CHECK_ADDRESS(address, INET); |
| 1531 | |
| 1532 | addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); |
| 1533 | addr->s_addr = hostaddr; |
| 1534 | |
| 1535 | return GSOCK_NOERROR; |
| 1536 | } |
| 1537 | |
| 1538 | GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, |
| 1539 | const char *protocol) |
| 1540 | { |
| 1541 | struct servent *se; |
| 1542 | struct sockaddr_in *addr; |
| 1543 | |
| 1544 | assert(address != NULL); |
| 1545 | CHECK_ADDRESS(address, INET); |
| 1546 | |
| 1547 | if (!port) |
| 1548 | { |
| 1549 | address->m_error = GSOCK_INVPORT; |
| 1550 | return GSOCK_INVPORT; |
| 1551 | } |
| 1552 | |
| 1553 | se = getservbyname(port, protocol); |
| 1554 | if (!se) |
| 1555 | { |
| 1556 | if (isdigit((int)port[0])) |
| 1557 | { |
| 1558 | int port_int; |
| 1559 | |
| 1560 | port_int = atoi(port); |
| 1561 | addr = (struct sockaddr_in *)address->m_addr; |
| 1562 | addr->sin_port = htons(port_int); |
| 1563 | return GSOCK_NOERROR; |
| 1564 | } |
| 1565 | |
| 1566 | address->m_error = GSOCK_INVPORT; |
| 1567 | return GSOCK_INVPORT; |
| 1568 | } |
| 1569 | |
| 1570 | addr = (struct sockaddr_in *)address->m_addr; |
| 1571 | addr->sin_port = se->s_port; |
| 1572 | |
| 1573 | return GSOCK_NOERROR; |
| 1574 | } |
| 1575 | |
| 1576 | GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port) |
| 1577 | { |
| 1578 | struct sockaddr_in *addr; |
| 1579 | |
| 1580 | assert(address != NULL); |
| 1581 | CHECK_ADDRESS(address, INET); |
| 1582 | |
| 1583 | addr = (struct sockaddr_in *)address->m_addr; |
| 1584 | addr->sin_port = htons(port); |
| 1585 | |
| 1586 | return GSOCK_NOERROR; |
| 1587 | } |
| 1588 | |
| 1589 | GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf) |
| 1590 | { |
| 1591 | struct hostent *he; |
| 1592 | char *addr_buf; |
| 1593 | struct sockaddr_in *addr; |
| 1594 | |
| 1595 | assert(address != NULL); |
| 1596 | CHECK_ADDRESS(address, INET); |
| 1597 | |
| 1598 | addr = (struct sockaddr_in *)address->m_addr; |
| 1599 | addr_buf = (char *)&(addr->sin_addr); |
| 1600 | |
| 1601 | he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET); |
| 1602 | if (he == NULL) |
| 1603 | { |
| 1604 | address->m_error = GSOCK_NOHOST; |
| 1605 | return GSOCK_NOHOST; |
| 1606 | } |
| 1607 | |
| 1608 | strncpy(hostname, he->h_name, sbuf); |
| 1609 | |
| 1610 | return GSOCK_NOERROR; |
| 1611 | } |
| 1612 | |
| 1613 | unsigned long GAddress_INET_GetHostAddress(GAddress *address) |
| 1614 | { |
| 1615 | struct sockaddr_in *addr; |
| 1616 | |
| 1617 | assert(address != NULL); |
| 1618 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 1619 | |
| 1620 | addr = (struct sockaddr_in *)address->m_addr; |
| 1621 | |
| 1622 | return addr->sin_addr.s_addr; |
| 1623 | } |
| 1624 | |
| 1625 | unsigned short GAddress_INET_GetPort(GAddress *address) |
| 1626 | { |
| 1627 | struct sockaddr_in *addr; |
| 1628 | |
| 1629 | assert(address != NULL); |
| 1630 | CHECK_ADDRESS_RETVAL(address, INET, 0); |
| 1631 | |
| 1632 | addr = (struct sockaddr_in *)address->m_addr; |
| 1633 | return ntohs(addr->sin_port); |
| 1634 | } |
| 1635 | |
| 1636 | /* |
| 1637 | * ------------------------------------------------------------------------- |
| 1638 | * Unix address family |
| 1639 | * ------------------------------------------------------------------------- |
| 1640 | */ |
| 1641 | |
| 1642 | #ifdef __EMX__ |
| 1643 | GSocketError _GAddress_Init_UNIX(GAddress *address) |
| 1644 | { |
| 1645 | address->m_len = sizeof(struct sockaddr_un); |
| 1646 | address->m_addr = (struct sockaddr *)malloc(address->m_len); |
| 1647 | if (address->m_addr == NULL) |
| 1648 | { |
| 1649 | address->m_error = GSOCK_MEMERR; |
| 1650 | return GSOCK_MEMERR; |
| 1651 | } |
| 1652 | |
| 1653 | address->m_family = GSOCK_UNIX; |
| 1654 | address->m_realfamily = PF_UNIX; |
| 1655 | ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX; |
| 1656 | ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0; |
| 1657 | |
| 1658 | return GSOCK_NOERROR; |
| 1659 | } |
| 1660 | |
| 1661 | GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path) |
| 1662 | { |
| 1663 | struct sockaddr_un *addr; |
| 1664 | |
| 1665 | assert(address != NULL); |
| 1666 | |
| 1667 | CHECK_ADDRESS(address, UNIX); |
| 1668 | |
| 1669 | addr = ((struct sockaddr_un *)address->m_addr); |
| 1670 | memcpy(addr->sun_path, path, strlen(path)); |
| 1671 | |
| 1672 | return GSOCK_NOERROR; |
| 1673 | } |
| 1674 | |
| 1675 | GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) |
| 1676 | { |
| 1677 | struct sockaddr_un *addr; |
| 1678 | |
| 1679 | assert(address != NULL); |
| 1680 | CHECK_ADDRESS(address, UNIX); |
| 1681 | |
| 1682 | addr = (struct sockaddr_un *)address->m_addr; |
| 1683 | |
| 1684 | strncpy(path, addr->sun_path, sbuf); |
| 1685 | |
| 1686 | return GSOCK_NOERROR; |
| 1687 | } |
| 1688 | #endif |
| 1689 | /* __EMX__ */ |
| 1690 | #endif |
| 1691 | /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */ |
| 1692 | |