src/unix/gsocket.c

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