src/os2/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-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 #ifdef __EMX__
  33 #include <sys/time.h>
  34 #include <netinet/in.h>
  35 #include <arpa/inet.h>
  36 #include <netdb.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <sys/un.h>
  40 #define HAVE_INET_ADDR
  41 #else
  42 #include <utils.h>
  43 #include <sys\time.h>
  44 #include <types.h>
  45 #include <in.h>
  46 #include <netdb.h>
  47 #include <nerrno.h>
  48 #endif
  49 #if defined(__VISAGECPP__) && __IBMCPP__ < 400
  50 #include <machine\endian.h>
  51 #include <socket.h>
  52 #include <ioctl.h>
  53 #include <select.h>
  54 #include <unistd.h>
  55 #else
  56 #include <sys\socket.h>
  57 #include <sys\ioctl.h>
  58 #include <sys\select.h>
  59 #ifdef __EMX__
  60 #define soclose(a) close(a)
  61 #else
  62 #define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
  63 int _System bsdselect(int,
  64                       struct fd_set *,
  65                       struct fd_set *,
  66                       struct fd_set *,
  67                       struct timeval *);
  68 int _System soclose(int);
  69 #endif
  70 #endif
  71
  72 #include <string.h>
  73 #include <stdio.h>
  74 #if (defined(__VISAGECPP__) && __IBMCPP__ < 400) || defined(__EMX__)
  75 #  ifdef min
  76 #  undef min
  77 #  endif
  78 #  include <stdlib.h>
  79 #endif
  80 #include <stddef.h>
  81 #include <ctype.h>
  82
  83 #include <signal.h>
  84
  85 #ifndef SOCKLEN_T
  86
  87 #ifdef __GLIBC__
  88 #      if __GLIBC__ == 2
  89 #         define SOCKLEN_T socklen_t
  90 #      endif
  91 #else
  92 #      define SOCKLEN_T int
  93 #endif
  94
  95 #endif
  96
  97 /*
  98  * MSW defines this, Unices don't.
  99  */
 100 #ifndef INVALID_SOCKET
 101 #define INVALID_SOCKET -1
 102 #endif
 103
 104 /*
 105  * INADDR_BROADCAST is identical to INADDR_NONE which is not defined
 106  * on all systems. INADDR_BROADCAST should be fine to indicate an error.
 107  */
 108 #ifndef INADDR_NONE
 109 #define INADDR_NONE INADDR_BROADCAST
 110 #endif
 111
 112 #define MASK_SIGNAL()                       \
 113 {                                           \
 114   void (*old_handler)(int);                 \
 115                                             \
 116   old_handler = signal(SIGPIPE, SIG_IGN);
 117
 118 #define UNMASK_SIGNAL()                     \
 119   signal(SIGPIPE, old_handler);             \
 120 }
 121
 122 #ifndef __GSOCKET_STANDALONE__
 123 #  include "wx/unix/gsockunx.h"
 124 #  include "wx/gsocket.h"
 125 #else
 126 #  include "gsockunx.h"
 127 #  include "gsocket.h"
 128 #endif /* __GSOCKET_STANDALONE__ */
 129
 130 /* redefine some GUI-only functions to do nothing in console mode */
 131 #if defined(wxUSE_GUI) && !wxUSE_GUI
 132 #  define _GSocket_GUI_Init(socket) (1)
 133 #  define _GSocket_GUI_Destroy(socket)
 134 #  define _GSocket_Enable_Events(socket)
 135 #  define _GSocket_Disable_Events(socket)
 136 #  define _GSocket_Install_Callback(socket, event)
 137 #  define _GSocket_Uninstall_Callback(socket, event)
 138 #endif /* wxUSE_GUI */
 139
 140 /* debugging helpers */
 141 #define  __GSOCKET_DEBUG__
 142 #ifdef __GSOCKET_DEBUG__
 143 #  define GSocket_Debug(args) printf args
 144 #else
 145 #  define GSocket_Debug(args)
 146 #endif /* __GSOCKET_DEBUG__ */
 147
 148 /* Global initialisers */
 149
 150 int GSocket_Init(void)
 151 {
 152   return 1;
 153 }
 154
 155 void GSocket_Cleanup(void)
 156 {
 157 }
 158
 159 /* Constructors / Destructors for GSocket */
 160
 161 GSocket *GSocket_new(void)
 162 {
 163   int i, success;
 164   GSocket *socket;
 165
 166   socket = (GSocket *)malloc(sizeof(GSocket));
 167
 168   if (socket == NULL)
 169     return NULL;
 170
 171   socket->m_fd                  = INVALID_SOCKET;
 172   for (i=0;i<GSOCK_MAX_EVENT;i++)
 173   {
 174     socket->m_cbacks[i]         = NULL;
 175   }
 176   socket->m_detected            = 0;
 177   socket->m_local               = NULL;
 178   socket->m_peer                = NULL;
 179   socket->m_error               = GSOCK_NOERROR;
 180   socket->m_server              = FALSE;
 181   socket->m_stream              = TRUE;
 182   socket->m_gui_dependent       = NULL;
 183   socket->m_non_blocking        = FALSE;
 184   socket->m_timeout             = 10*60*1000;
 185                                 /* 10 minutes * 60 sec * 1000 millisec */
 186   socket->m_establishing        = FALSE;
 187
 188   /* Per-socket GUI-specific initialization */
 189   success = _GSocket_GUI_Init(socket);
 190   if (!success)
 191   {
 192     free(socket);
 193     return NULL;
 194   }
 195
 196   return socket;
 197 }
 198
 199 void GSocket_destroy(GSocket *socket)
 200 {
 201   assert(socket != NULL);
 202
 203   /* Check that the socket is really shutdowned */
 204   if (socket->m_fd != INVALID_SOCKET)
 205     GSocket_Shutdown(socket);
 206
 207   /* Per-socket GUI-specific cleanup */
 208   _GSocket_GUI_Destroy(socket);
 209
 210   /* Destroy private addresses */
 211   if (socket->m_local)
 212     GAddress_destroy(socket->m_local);
 213
 214   if (socket->m_peer)
 215     GAddress_destroy(socket->m_peer);
 216
 217   /* Destroy the socket itself */
 218   free(socket);
 219 }
 220
 221 /* GSocket_Shutdown:
 222  *  Disallow further read/write operations on this socket, close
 223  *  the fd and disable all callbacks.
 224  */
 225 void GSocket_Shutdown(GSocket *socket)
 226 {
 227   int evt;
 228
 229   assert(socket != NULL);
 230
 231   /* If socket has been created, shutdown it */
 232   if (socket->m_fd != INVALID_SOCKET)
 233   {
 234     shutdown(socket->m_fd, 2);
 235     soclose(socket->m_fd);
 236     socket->m_fd = INVALID_SOCKET;
 237   }
 238
 239   /* Disable GUI callbacks */
 240   for (evt = 0; evt < GSOCK_MAX_EVENT; evt++)
 241     socket->m_cbacks[evt] = NULL;
 242
 243   socket->m_detected = GSOCK_LOST_FLAG;
 244   _GSocket_Disable_Events(socket);
 245 }
 246
 247 /* Address handling */
 248
 249 /* GSocket_SetLocal:
 250  * GSocket_GetLocal:
 251  * GSocket_SetPeer:
 252  * GSocket_GetPeer:
 253  *  Set or get the local or peer address for this socket. The 'set'
 254  *  functions return GSOCK_NOERROR on success, an error code otherwise.
 255  *  The 'get' functions return a pointer to a GAddress object on success,
 256  *  or NULL otherwise, in which case they set the error code of the
 257  *  corresponding GSocket.
 258  *
 259  *  Error codes:
 260  *    GSOCK_INVSOCK - the socket is not valid.
 261  *    GSOCK_INVADDR - the address is not valid.
 262  */
 263 GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address)
 264 {
 265   assert(socket != NULL);
 266
 267   /* the socket must be initialized, or it must be a server */
 268   if ((socket->m_fd != INVALID_SOCKET && !socket->m_server))
 269   {
 270     socket->m_error = GSOCK_INVSOCK;
 271     return GSOCK_INVSOCK;
 272   }
 273
 274   /* check address */
 275   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
 276   {
 277     socket->m_error = GSOCK_INVADDR;
 278     return GSOCK_INVADDR;
 279   }
 280
 281   if (socket->m_local)
 282     GAddress_destroy(socket->m_local);
 283
 284   socket->m_local = GAddress_copy(address);
 285
 286   return GSOCK_NOERROR;
 287 }
 288
 289 GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address)
 290 {
 291   assert(socket != NULL);
 292
 293   /* check address */
 294   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
 295   {
 296     socket->m_error = GSOCK_INVADDR;
 297     return GSOCK_INVADDR;
 298   }
 299
 300   if (socket->m_peer)
 301     GAddress_destroy(socket->m_peer);
 302
 303   socket->m_peer = GAddress_copy(address);
 304
 305   return GSOCK_NOERROR;
 306 }
 307
 308 GAddress *GSocket_GetLocal(GSocket *socket)
 309 {
 310   GAddress *address;
 311   struct sockaddr addr;
 312   SOCKLEN_T size = sizeof(addr);
 313   GSocketError err;
 314
 315   assert(socket != NULL);
 316
 317   /* try to get it from the m_local var first */
 318   if (socket->m_local)
 319     return GAddress_copy(socket->m_local);
 320
 321   /* else, if the socket is initialized, try getsockname */
 322   if (socket->m_fd == INVALID_SOCKET)
 323   {
 324     socket->m_error = GSOCK_INVSOCK;
 325     return NULL;
 326   }
 327
 328   if (getsockname(socket->m_fd, &addr, (SOCKLEN_T *) &size) < 0)
 329   {
 330     socket->m_error = GSOCK_IOERR;
 331     return NULL;
 332   }
 333
 334   /* got a valid address from getsockname, create a GAddress object */
 335   address = GAddress_new();
 336   if (address == NULL)
 337   {
 338     socket->m_error = GSOCK_MEMERR;
 339     return NULL;
 340   }
 341
 342   err = _GAddress_translate_from(address, &addr, size);
 343   if (err != GSOCK_NOERROR)
 344   {
 345     GAddress_destroy(address);
 346     socket->m_error = err;
 347     return NULL;
 348   }
 349
 350   return address;
 351 }
 352
 353 GAddress *GSocket_GetPeer(GSocket *socket)
 354 {
 355   assert(socket != NULL);
 356
 357   /* try to get it from the m_peer var */
 358   if (socket->m_peer)
 359     return GAddress_copy(socket->m_peer);
 360
 361   return NULL;
 362 }
 363
 364 /* Server specific parts */
 365
 366 /* GSocket_SetServer:
 367  *  Sets up this socket as a server. The local address must have been
 368  *  set with GSocket_SetLocal() before GSocket_SetServer() is called.
 369  *  Returns GSOCK_NOERROR on success, one of the following otherwise:
 370  *
 371  *  Error codes:
 372  *    GSOCK_INVSOCK - the socket is in use.
 373  *    GSOCK_INVADDR - the local address has not been set.
 374  *    GSOCK_IOERR   - low-level error.
 375  */
 376 GSocketError GSocket_SetServer(GSocket *sck)
 377 {
 378   int arg = 1;
 379
 380   assert(sck != NULL);
 381
 382   /* must not be in use */
 383   if (sck->m_fd != INVALID_SOCKET)
 384   {
 385     sck->m_error = GSOCK_INVSOCK;
 386     return GSOCK_INVSOCK;
 387   }
 388
 389   /* the local addr must have been set */
 390   if (!sck->m_local)
 391   {
 392     sck->m_error = GSOCK_INVADDR;
 393     return GSOCK_INVADDR;
 394   }
 395
 396   /* Initialize all fields */
 397   sck->m_stream   = TRUE;
 398   sck->m_server   = TRUE;
 399   sck->m_oriented = TRUE;
 400
 401   /* Create the socket */
 402   sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0);
 403
 404   if (sck->m_fd == INVALID_SOCKET)
 405   {
 406     sck->m_error = GSOCK_IOERR;
 407     return GSOCK_IOERR;
 408   }
 409
 410   ioctl(sck->m_fd, FIONBIO, &arg);
 411   _GSocket_Enable_Events(sck);
 412
 413   /* Bind to the local address,
 414    * retrieve the actual address bound,
 415    * and listen up to 5 connections.
 416    */
 417   if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
 418       (getsockname(sck->m_fd,
 419                    sck->m_local->m_addr,
 420                    (SOCKLEN_T *) &sck->m_local->m_len) != 0) ||
 421       (listen(sck->m_fd, 5) != 0))
 422   {
 423     soclose(sck->m_fd);
 424     sck->m_fd = INVALID_SOCKET;
 425     sck->m_error = GSOCK_IOERR;
 426     return GSOCK_IOERR;
 427   }
 428
 429   return GSOCK_NOERROR;
 430 }
 431
 432 /* GSocket_WaitConnection:
 433  *  Waits for an incoming client connection. Returns a pointer to
 434  *  a GSocket object, or NULL if there was an error, in which case
 435  *  the last error field will be updated for the calling GSocket.
 436  *
 437  *  Error codes (set in the calling GSocket)
 438  *    GSOCK_INVSOCK    - the socket is not valid or not a server.
 439  *    GSOCK_TIMEDOUT   - timeout, no incoming connections.
 440  *    GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking.
 441  *    GSOCK_MEMERR     - couldn't allocate memory.
 442  *    GSOCK_IOERR      - low-level error.
 443  */
 444 GSocket *GSocket_WaitConnection(GSocket *socket)
 445 {
 446   struct sockaddr from;
 447   SOCKLEN_T fromlen = sizeof(from);
 448   GSocket *connection;
 449   GSocketError err;
 450   int arg = 1;
 451
 452   assert(socket != NULL);
 453
 454   /* Reenable CONNECTION events */
 455   _GSocket_Enable(socket, GSOCK_CONNECTION);
 456
 457   /* If the socket has already been created, we exit immediately */
 458   if (socket->m_fd == INVALID_SOCKET || !socket->m_server)
 459   {
 460     socket->m_error = GSOCK_INVSOCK;
 461     return NULL;
 462   }
 463
 464   /* Create a GSocket object for the new connection */
 465   connection = GSocket_new();
 466
 467   if (!connection)
 468   {
 469     socket->m_error = GSOCK_MEMERR;
 470     return NULL;
 471   }
 472
 473   /* Wait for a connection (with timeout) */
 474   if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
 475   {
 476     GSocket_destroy(connection);
 477     /* socket->m_error set by _GSocket_Input_Timeout */
 478     return NULL;
 479   }
 480
 481   connection->m_fd = accept(socket->m_fd, &from, (SOCKLEN_T *) &fromlen);
 482
 483   if (connection->m_fd == INVALID_SOCKET)
 484   {
 485     if (errno == EWOULDBLOCK)
 486       socket->m_error = GSOCK_WOULDBLOCK;
 487     else
 488       socket->m_error = GSOCK_IOERR;
 489
 490     GSocket_destroy(connection);
 491     return NULL;
 492   }
 493
 494   /* Initialize all fields */
 495   connection->m_server   = FALSE;
 496   connection->m_stream   = TRUE;
 497   connection->m_oriented = TRUE;
 498
 499   /* Setup the peer address field */
 500   connection->m_peer = GAddress_new();
 501   if (!connection->m_peer)
 502   {
 503     GSocket_destroy(connection);
 504     socket->m_error = GSOCK_MEMERR;
 505     return NULL;
 506   }
 507   err = _GAddress_translate_from(connection->m_peer, &from, fromlen);
 508   if (err != GSOCK_NOERROR)
 509   {
 510     GAddress_destroy(connection->m_peer);
 511     GSocket_destroy(connection);
 512     socket->m_error = err;
 513     return NULL;
 514   }
 515
 516   ioctl(connection->m_fd, FIONBIO, &arg);
 517   _GSocket_Enable_Events(connection);
 518
 519   return connection;
 520 }
 521
 522 /* Client specific parts */
 523
 524 /* GSocket_Connect:
 525  *  For stream (connection oriented) sockets, GSocket_Connect() tries
 526  *  to establish a client connection to a server using the peer address
 527  *  as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
 528  *  connection has been succesfully established, or one of the error
 529  *  codes listed below. Note that for nonblocking sockets, a return
 530  *  value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
 531  *  request can be completed later; you should use GSocket_Select()
 532  *  to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the
 533  *  corresponding asynchronous events.
 534  *
 535  *  For datagram (non connection oriented) sockets, GSocket_Connect()
 536  *  just sets the peer address established with GSocket_SetPeer() as
 537  *  default destination.
 538  *
 539  *  Error codes:
 540  *    GSOCK_INVSOCK    - the socket is in use or not valid.
 541  *    GSOCK_INVADDR    - the peer address has not been established.
 542  *    GSOCK_TIMEDOUT   - timeout, the connection failed.
 543  *    GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only)
 544  *    GSOCK_MEMERR     - couldn't allocate memory.
 545  *    GSOCK_IOERR      - low-level error.
 546  */
 547 GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream)
 548 {
 549   int err, ret;
 550   int arg = 1;
 551
 552   assert(sck != NULL);
 553
 554   /* Enable CONNECTION events (needed for nonblocking connections) */
 555   _GSocket_Enable(sck, GSOCK_CONNECTION);
 556
 557   if (sck->m_fd != INVALID_SOCKET)
 558   {
 559     sck->m_error = GSOCK_INVSOCK;
 560     return GSOCK_INVSOCK;
 561   }
 562
 563   if (!sck->m_peer)
 564   {
 565     sck->m_error = GSOCK_INVADDR;
 566     return GSOCK_INVADDR;
 567   }
 568
 569   /* Streamed or dgram socket? */
 570   sck->m_stream   = (stream == GSOCK_STREAMED);
 571   sck->m_oriented = TRUE;
 572   sck->m_server   = FALSE;
 573   sck->m_establishing = FALSE;
 574
 575   /* Create the socket */
 576   sck->m_fd = socket(sck->m_peer->m_realfamily,
 577                      sck->m_stream? SOCK_STREAM : SOCK_DGRAM, 0);
 578
 579   if (sck->m_fd == INVALID_SOCKET)
 580   {
 581     sck->m_error = GSOCK_IOERR;
 582     return GSOCK_IOERR;
 583   }
 584
 585   ioctl(sck->m_fd, FIONBIO, &arg);
 586   _GSocket_Enable_Events(sck);
 587
 588   /* Connect it to the peer address, with a timeout (see below) */
 589   ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len);
 590
 591   printf("connect on %d to %X (%d) returned %d, errno = %d\n",
 592          sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len, ret, errno);
 593   if (ret == -1)
 594   {
 595     err = errno;
 596
 597     /* If connect failed with EINPROGRESS and the GSocket object
 598      * is in blocking mode, we select() for the specified timeout
 599      * checking for writability to see if the connection request
 600      * completes.
 601      */
 602     if ((err == EINPROGRESS) && (!sck->m_non_blocking))
 603     {
 604       if (_GSocket_Output_Timeout(sck) == GSOCK_TIMEDOUT)
 605       {
 606         soclose(sck->m_fd);
 607         sck->m_fd = INVALID_SOCKET;
 608         /* sck->m_error is set in _GSocket_Output_Timeout */
 609         return GSOCK_TIMEDOUT;
 610       }
 611       else
 612       {
 613         int error;
 614         SOCKLEN_T len = sizeof(error);
 615
 616         getsockopt(sck->m_fd, SOL_SOCKET, SO_ERROR, (void*) &error, &len);
 617
 618         if (!error)
 619           return GSOCK_NOERROR;
 620       }
 621     }
 622
 623     /* If connect failed with EINPROGRESS and the GSocket object
 624      * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK
 625      * (and return GSOCK_WOULDBLOCK) but we don't close the socket;
 626      * this way if the connection completes, a GSOCK_CONNECTION
 627      * event will be generated, if enabled.
 628      */
 629     if ((err == EINPROGRESS) && (sck->m_non_blocking))
 630     {
 631       sck->m_establishing = TRUE;
 632       sck->m_error = GSOCK_WOULDBLOCK;
 633       return GSOCK_WOULDBLOCK;
 634     }
 635
 636     /* If connect failed with an error other than EINPROGRESS,
 637      * then the call to GSocket_Connect has failed.
 638      */
 639     soclose(sck->m_fd);
 640     sck->m_fd = INVALID_SOCKET;
 641     sck->m_error = GSOCK_IOERR;
 642     return GSOCK_IOERR;
 643   }
 644
 645   return GSOCK_NOERROR;
 646 }
 647
 648 /* Datagram sockets */
 649
 650 /* GSocket_SetNonOriented:
 651  *  Sets up this socket as a non-connection oriented (datagram) socket.
 652  *  Before using this function, the local address must have been set
 653  *  with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR
 654  *  on success, or one of the following otherwise.
 655  *
 656  *  Error codes:
 657  *    GSOCK_INVSOCK - the socket is in use.
 658  *    GSOCK_INVADDR - the local address has not been set.
 659  *    GSOCK_IOERR   - low-level error.
 660  */
 661 GSocketError GSocket_SetNonOriented(GSocket *sck)
 662 {
 663   int arg = 1;
 664
 665   assert(sck != NULL);
 666
 667   if (sck->m_fd != INVALID_SOCKET)
 668   {
 669     sck->m_error = GSOCK_INVSOCK;
 670     return GSOCK_INVSOCK;
 671   }
 672
 673   if (!sck->m_local)
 674   {
 675     sck->m_error = GSOCK_INVADDR;
 676     return GSOCK_INVADDR;
 677   }
 678
 679   /* Initialize all fields */
 680   sck->m_stream   = FALSE;
 681   sck->m_server   = FALSE;
 682   sck->m_oriented = FALSE;
 683
 684   /* Create the socket */
 685   sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0);
 686
 687   if (sck->m_fd == INVALID_SOCKET)
 688   {
 689     sck->m_error = GSOCK_IOERR;
 690     return GSOCK_IOERR;
 691   }
 692
 693   ioctl(sck->m_fd, FIONBIO, &arg);
 694   _GSocket_Enable_Events(sck);
 695
 696   /* Bind to the local address,
 697    * and retrieve the actual address bound.
 698    */
 699   if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
 700       (getsockname(sck->m_fd,
 701                    sck->m_local->m_addr,
 702                    (SOCKLEN_T *) &sck->m_local->m_len) != 0))
 703   {
 704     soclose(sck->m_fd);
 705     sck->m_fd    = INVALID_SOCKET;
 706     sck->m_error = GSOCK_IOERR;
 707     return GSOCK_IOERR;
 708   }
 709
 710   return GSOCK_NOERROR;
 711 }
 712
 713 /* Generic IO */
 714
 715 /* Like recv(), send(), ... */
 716 int GSocket_Read(GSocket *socket, char *buffer, int size)
 717 {
 718   int ret;
 719
 720   assert(socket != NULL);
 721
 722   /* Reenable INPUT events */
 723   _GSocket_Enable(socket, GSOCK_INPUT);
 724
 725   if (socket->m_fd == INVALID_SOCKET || socket->m_server)
 726   {
 727     socket->m_error = GSOCK_INVSOCK;
 728     return -1;
 729   }
 730
 731   /* If the socket is blocking, wait for data (with a timeout) */
 732   if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
 733     return -1;
 734
 735   /* Read the data */
 736   if (socket->m_stream)
 737     ret = _GSocket_Recv_Stream(socket, buffer, size);
 738   else
 739     ret = _GSocket_Recv_Dgram(socket, buffer, size);
 740
 741   if (ret == -1)
 742   {
 743     if (errno == EWOULDBLOCK)
 744       socket->m_error = GSOCK_WOULDBLOCK;
 745     else
 746       socket->m_error = GSOCK_IOERR;
 747   }
 748
 749   return ret;
 750 }
 751
 752 int GSocket_Write(GSocket *socket, const char *buffer, int size)
 753 {
 754   int ret;
 755
 756   assert(socket != NULL);
 757
 758   GSocket_Debug(( "GSocket_Write #1, size %d\n", size ));
 759
 760   if (socket->m_fd == INVALID_SOCKET || socket->m_server)
 761   {
 762     socket->m_error = GSOCK_INVSOCK;
 763     return -1;
 764   }
 765
 766   GSocket_Debug(( "GSocket_Write #2, size %d\n", size ));
 767
 768   /* If the socket is blocking, wait for writability (with a timeout) */
 769   if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT)
 770     return -1;
 771
 772   GSocket_Debug(( "GSocket_Write #3, size %d\n", size ));
 773
 774   /* Write the data */
 775   if (socket->m_stream)
 776     ret = _GSocket_Send_Stream(socket, buffer, size);
 777   else
 778     ret = _GSocket_Send_Dgram(socket, buffer, size);
 779
 780   GSocket_Debug(( "GSocket_Write #4, size %d\n", size ));
 781
 782   if (ret == -1)
 783   {
 784     if (errno == EWOULDBLOCK)
 785     {
 786       socket->m_error = GSOCK_WOULDBLOCK;
 787       GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));
 788     }
 789     else
 790     {
 791       socket->m_error = GSOCK_IOERR;
 792       GSocket_Debug(( "GSocket_Write error IOERR\n" ));
 793     }
 794
 795     /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
 796      * in MSW). Once the first OUTPUT event is received, users can assume
 797      * that the socket is writable until a read operation fails. Only then
 798      * will further OUTPUT events be posted.
 799      */
 800     _GSocket_Enable(socket, GSOCK_OUTPUT);
 801     return -1;
 802   }
 803
 804   GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret ));
 805
 806   return ret;
 807 }
 808
 809 /* GSocket_Select:
 810  *  Polls the socket to determine its status. This function will
 811  *  check for the events specified in the 'flags' parameter, and
 812  *  it will return a mask indicating which operations can be
 813  *  performed. This function won't block, regardless of the
 814  *  mode (blocking | nonblocking) of the socket.
 815  */
 816 GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
 817 {
 818 #if defined(wxUSE_GUI) && !wxUSE_GUI
 819
 820   GSocketEventFlags result = 0;
 821   fd_set readfds;
 822   fd_set writefds;
 823   fd_set exceptfds;
 824   struct timeval tv;
 825
 826   /* Do not use a static struct, Linux can garble it */
 827   tv.tv_sec = 0;
 828   tv.tv_usec = 0;
 829
 830   assert(socket != NULL);
 831
 832   FD_ZERO(&readfds);
 833   FD_ZERO(&writefds);
 834   FD_ZERO(&exceptfds);
 835   FD_SET(socket->m_fd, &readfds);
 836   FD_SET(socket->m_fd, &writefds);
 837   FD_SET(socket->m_fd, &exceptfds);
 838
 839   /* Check known state first */
 840   result |= (GSOCK_CONNECTION_FLAG & socket->m_detected & flags);
 841   result |= (GSOCK_LOST_FLAG       & socket->m_detected & flags);
 842
 843   /* Try select now */
 844   if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0)
 845     return result;
 846
 847   /* Check for readability */
 848   if (FD_ISSET(socket->m_fd, &readfds))
 849   {
 850     char c;
 851
 852     if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
 853     {
 854       result |= (GSOCK_INPUT_FLAG & flags);
 855     }
 856     else
 857     {
 858       if (socket->m_server && socket->m_stream)
 859       {
 860         result |= (GSOCK_CONNECTION_FLAG & flags);
 861         socket->m_detected |= GSOCK_CONNECTION_FLAG;
 862       }
 863       else
 864       {
 865         result |= (GSOCK_LOST_FLAG & flags);
 866         socket->m_detected = GSOCK_LOST_FLAG;
 867       }
 868     }
 869   }
 870
 871   /* Check for writability */
 872   if (FD_ISSET(socket->m_fd, &writefds))
 873   {
 874     if (socket->m_establishing && !socket->m_server)
 875     {
 876       int error;
 877       SOCKLEN_T len = sizeof(error);
 878
 879       socket->m_establishing = FALSE;
 880
 881       getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
 882
 883       if (error)
 884       {
 885         result |= (GSOCK_LOST_FLAG & flags);
 886         socket->m_detected = GSOCK_LOST_FLAG;
 887       }
 888       else
 889       {
 890         result |= (GSOCK_CONNECTION_FLAG & flags);
 891         socket->m_detected |= GSOCK_CONNECTION_FLAG;
 892       }
 893     }
 894     else
 895     {
 896       result |= (GSOCK_OUTPUT_FLAG & flags);
 897     }
 898   }
 899
 900   /* Check for exceptions and errors (is this useful in Unices?) */
 901   if (FD_ISSET(socket->m_fd, &exceptfds))
 902   {
 903     result |= (GSOCK_LOST_FLAG & flags);
 904     socket->m_establishing = FALSE;
 905     socket->m_detected = GSOCK_LOST_FLAG;
 906   }
 907
 908   return result;
 909
 910 #else
 911
 912   assert(socket != NULL);
 913   return flags & socket->m_detected;
 914
 915 #endif /* !wxUSE_GUI */
 916 }
 917
 918 /* Flags */
 919
 920 /* GSocket_SetNonBlocking:
 921  *  Sets the socket to non-blocking mode. All IO calls will return
 922  *  immediately.
 923  */
 924 void GSocket_SetNonBlocking(GSocket *socket, int non_block)
 925 {
 926   assert(socket != NULL);
 927
 928   GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) );
 929
 930   socket->m_non_blocking = non_block;
 931 }
 932
 933 /* GSocket_SetTimeout:
 934  *  Sets the timeout for blocking calls. Time is expressed in
 935  *  milliseconds.
 936  */
 937 void GSocket_SetTimeout(GSocket *socket, unsigned long millisec)
 938 {
 939   assert(socket != NULL);
 940
 941   socket->m_timeout = millisec;
 942 }
 943
 944 /* GSocket_GetError:
 945  *  Returns the last error occured for this socket. Note that successful
 946  *  operations do not clear this back to GSOCK_NOERROR, so use it only
 947  *  after an error.
 948  */
 949 GSocketError GSocket_GetError(GSocket *socket)
 950 {
 951   assert(socket != NULL);
 952
 953   return socket->m_error;
 954 }
 955
 956 /* Callbacks */
 957
 958 /* GSOCK_INPUT:
 959  *   There is data to be read in the input buffer. If, after a read
 960  *   operation, there is still data available, the callback function will
 961  *   be called again.
 962  * GSOCK_OUTPUT:
 963  *   The socket is available for writing. That is, the next write call
 964  *   won't block. This event is generated only once, when the connection is
 965  *   first established, and then only if a call failed with GSOCK_WOULDBLOCK,
 966  *   when the output buffer empties again. This means that the app should
 967  *   assume that it can write since the first OUTPUT event, and no more
 968  *   OUTPUT events will be generated unless an error occurs.
 969  * GSOCK_CONNECTION:
 970  *   Connection succesfully established, for client sockets, or incoming
 971  *   client connection, for server sockets. Wait for this event (also watch
 972  *   out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
 973  * GSOCK_LOST:
 974  *   The connection is lost (or a connection request failed); this could
 975  *   be due to a failure, or due to the peer closing it gracefully.
 976  */
 977
 978 /* GSocket_SetCallback:
 979  *  Enables the callbacks specified by 'flags'. Note that 'flags'
 980  *  may be a combination of flags OR'ed toghether, so the same
 981  *  callback function can be made to accept different events.
 982  *  The callback function must have the following prototype:
 983  *
 984  *  void function(GSocket *socket, GSocketEvent event, char *cdata)
 985  */
 986 void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags,
 987                          GSocketCallback callback, char *cdata)
 988 {
 989   int count;
 990
 991   assert(socket != NULL);
 992
 993   for (count = 0; count < GSOCK_MAX_EVENT; count++)
 994   {
 995     if ((flags & (1 << count)) != 0)
 996     {
 997       printf("Setting callback no %d for socket at %X to address %X,data %X\n",
 998              count, socket, callback, cdata);
 999       socket->m_cbacks[count] = callback;
1000       socket->m_data[count] = cdata;
1001     }
1002   }
1003 }
1004
1005 /* GSocket_UnsetCallback:
1006  *  Disables all callbacks specified by 'flags', which may be a
1007  *  combination of flags OR'ed toghether.
1008  */
1009 void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags)
1010 {
1011   int count;
1012
1013   assert(socket != NULL);
1014
1015   for (count = 0; count < GSOCK_MAX_EVENT; count++)
1016   {
1017     if ((flags & (1 << count)) != 0)
1018     {
1019       printf("Removing callback no %d for socket at %X",
1020              count, socket);
1021       socket->m_cbacks[count] = NULL;
1022       socket->m_data[count] = NULL;
1023     }
1024   }
1025 }
1026
1027
1028 #define CALL_CALLBACK(socket, event) {                                  \
1029   _GSocket_Disable(socket, event);                                      \
1030   if (socket->m_cbacks[event]){                                         \
1031     printf("Call callback for event %d, socket %X: %X, %X\n", event,    \
1032             socket, socket->m_cbacks[event], socket->m_data[event]);    \
1033     socket->m_cbacks[event](socket, event, socket->m_data[event]);      \
1034   }                                                                     \
1035 }
1036
1037
1038 void _GSocket_Enable(GSocket *socket, GSocketEvent event)
1039 {
1040   socket->m_detected &= ~(1 << event);
1041   _GSocket_Install_Callback(socket, event);
1042 }
1043
1044 void _GSocket_Disable(GSocket *socket, GSocketEvent event)
1045 {
1046   socket->m_detected |= (1 << event);
1047   _GSocket_Uninstall_Callback(socket, event);
1048 }
1049
1050 /* _GSocket_Input_Timeout:
1051  *  For blocking sockets, wait until data is available or
1052  *  until timeout ellapses.
1053  */
1054 GSocketError _GSocket_Input_Timeout(GSocket *socket)
1055 {
1056   struct timeval tv;
1057   fd_set readfds;
1058   int ret;
1059
1060   /* Linux select() will overwrite the struct on return */
1061   tv.tv_sec  = (socket->m_timeout / 1000);
1062   tv.tv_usec = (socket->m_timeout % 1000) * 1000;
1063
1064   if (!socket->m_non_blocking)
1065   {
1066     FD_ZERO(&readfds);
1067     FD_SET(socket->m_fd, &readfds);
1068     ret = select(socket->m_fd + 1, &readfds, NULL, NULL, &tv);
1069     if (ret == 0)
1070     {
1071       GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" ));
1072       socket->m_error = GSOCK_TIMEDOUT;
1073       return GSOCK_TIMEDOUT;
1074     }
1075     if (ret == -1)
1076     {
1077       GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" ));
1078       if (errno == EBADF) GSocket_Debug(( "Invalid file descriptor\n" ));
1079       if (errno == EINTR) GSocket_Debug(( "A non blocked signal was caught\n" ));
1080       if (errno == EINVAL) GSocket_Debug(( "The highest number descriptor is negative\n" ));
1081       if (errno == ENOMEM) GSocket_Debug(( "Not enough memory\n" ));
1082       socket->m_error = GSOCK_TIMEDOUT;
1083       return GSOCK_TIMEDOUT;
1084     }
1085   }
1086   return GSOCK_NOERROR;
1087 }
1088
1089 /* _GSocket_Output_Timeout:
1090  *  For blocking sockets, wait until data can be sent without
1091  *  blocking or until timeout ellapses.
1092  */
1093 GSocketError _GSocket_Output_Timeout(GSocket *socket)
1094 {
1095   struct timeval tv;
1096   fd_set writefds;
1097   int ret;
1098
1099   /* Linux select() will overwrite the struct on return */
1100   tv.tv_sec  = (socket->m_timeout / 1000);
1101   tv.tv_usec = (socket->m_timeout % 1000) * 1000;
1102
1103   GSocket_Debug( ("m_non_blocking has: %d\n", (int)socket->m_non_blocking) );
1104
1105   if (!socket->m_non_blocking)
1106   {
1107     FD_ZERO(&writefds);
1108     FD_SET(socket->m_fd, &writefds);
1109     ret = select(socket->m_fd + 1, NULL, &writefds, NULL, &tv);
1110     if (ret == 0)
1111     {
1112       GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" ));
1113       socket->m_error = GSOCK_TIMEDOUT;
1114       return GSOCK_TIMEDOUT;
1115     }
1116     if (ret == -1)
1117     {
1118       GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" ));
1119       if (errno == EBADF) GSocket_Debug(( "Invalid file descriptor\n" ));
1120       if (errno == EINTR) GSocket_Debug(( "A non blocked signal was caught\n" ));
1121       if (errno == EINVAL) GSocket_Debug(( "The highest number descriptor is negative\n" ));
1122       if (errno == ENOMEM) GSocket_Debug(( "Not enough memory\n" ));
1123       socket->m_error = GSOCK_TIMEDOUT;
1124       return GSOCK_TIMEDOUT;
1125     }
1126     if ( ! FD_ISSET(socket->m_fd, &writefds) )
1127       GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" ));
1128     else
1129       GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" ));
1130   }
1131   else
1132   {
1133     GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" ));
1134   }
1135
1136   return GSOCK_NOERROR;
1137 }
1138
1139 int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size)
1140 {
1141   return recv(socket->m_fd, buffer, size, 0);
1142 }
1143
1144 int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size)
1145 {
1146   struct sockaddr from;
1147   SOCKLEN_T fromlen = sizeof(from);
1148   int ret;
1149   GSocketError err;
1150
1151   fromlen = sizeof(from);
1152
1153   ret = recvfrom(socket->m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen);
1154
1155   if (ret == -1)
1156     return -1;
1157
1158   /* Translate a system address into a GSocket address */
1159   if (!socket->m_peer)
1160   {
1161     socket->m_peer = GAddress_new();
1162     if (!socket->m_peer)
1163     {
1164       socket->m_error = GSOCK_MEMERR;
1165       return -1;
1166     }
1167   }
1168   err = _GAddress_translate_from(socket->m_peer, &from, fromlen);
1169   if (err != GSOCK_NOERROR)
1170   {
1171     GAddress_destroy(socket->m_peer);
1172     socket->m_peer  = NULL;
1173     socket->m_error = err;
1174     return -1;
1175   }
1176
1177   return ret;
1178 }
1179
1180 int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size)
1181 {
1182   int ret;
1183
1184   MASK_SIGNAL();
1185   ret = send(socket->m_fd, buffer, size, 0);
1186   UNMASK_SIGNAL();
1187
1188   return ret;
1189 }
1190
1191 int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size)
1192 {
1193   struct sockaddr *addr;
1194   int len, ret;
1195   GSocketError err;
1196
1197   if (!socket->m_peer)
1198   {
1199     socket->m_error = GSOCK_INVADDR;
1200     return -1;
1201   }
1202
1203   err = _GAddress_translate_to(socket->m_peer, &addr, &len);
1204   if (err != GSOCK_NOERROR)
1205   {
1206     socket->m_error = err;
1207     return -1;
1208   }
1209
1210   MASK_SIGNAL();
1211   ret = sendto(socket->m_fd, buffer, size, 0, addr, len);
1212   UNMASK_SIGNAL();
1213
1214   /* Frees memory allocated from _GAddress_translate_to */
1215   free(addr);
1216
1217   return ret;
1218 }
1219
1220 void _GSocket_Detected_Read(GSocket *socket)
1221 {
1222   char c;
1223
1224   if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
1225   {
1226     CALL_CALLBACK(socket, GSOCK_INPUT);
1227   }
1228   else
1229   {
1230     if (socket->m_server && socket->m_stream)
1231     {
1232       CALL_CALLBACK(socket, GSOCK_CONNECTION);
1233     }
1234     else
1235     {
1236       CALL_CALLBACK(socket, GSOCK_LOST);
1237     }
1238   }
1239 }
1240
1241 void _GSocket_Detected_Write(GSocket *socket)
1242 {
1243   if (socket->m_establishing && !socket->m_server)
1244   {
1245     int error;
1246     SOCKLEN_T len = sizeof(error);
1247
1248     socket->m_establishing = FALSE;
1249
1250     getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
1251
1252     if (error)
1253     {
1254       CALL_CALLBACK(socket, GSOCK_LOST);
1255     }
1256     else
1257     {
1258       CALL_CALLBACK(socket, GSOCK_CONNECTION);
1259       /* We have to fire this event by hand because CONNECTION (for clients)
1260        * and OUTPUT are internally the same and we just disabled CONNECTION
1261        * events with the above macro.
1262        */
1263       CALL_CALLBACK(socket, GSOCK_OUTPUT);
1264     }
1265   }
1266   else
1267   {
1268     CALL_CALLBACK(socket, GSOCK_OUTPUT);
1269   }
1270 }
1271
1272 /*
1273  * -------------------------------------------------------------------------
1274  * GAddress
1275  * -------------------------------------------------------------------------
1276  */
1277
1278 /* CHECK_ADDRESS verifies that the current address family is either
1279  * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
1280  * initalizes it to be a GSOCK_*family*. In other cases, it returns
1281  * an appropiate error code.
1282  *
1283  * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1284  */
1285 #define CHECK_ADDRESS(address, family)                              \
1286 {                                                                   \
1287   if (address->m_family == GSOCK_NOFAMILY)                          \
1288     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1289       return address->m_error;                                      \
1290   if (address->m_family != GSOCK_##family)                          \
1291   {                                                                 \
1292     address->m_error = GSOCK_INVADDR;                               \
1293     return GSOCK_INVADDR;                                           \
1294   }                                                                 \
1295 }
1296
1297 #define CHECK_ADDRESS_RETVAL(address, family, retval)               \
1298 {                                                                   \
1299   if (address->m_family == GSOCK_NOFAMILY)                          \
1300     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1301       return retval;                                                \
1302   if (address->m_family != GSOCK_##family)                          \
1303   {                                                                 \
1304     address->m_error = GSOCK_INVADDR;                               \
1305     return retval;                                                  \
1306   }                                                                 \
1307 }
1308
1309
1310 GAddress *GAddress_new(void)
1311 {
1312   GAddress *address;
1313
1314   if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1315     return NULL;
1316
1317   address->m_family  = GSOCK_NOFAMILY;
1318   address->m_addr    = NULL;
1319   address->m_len     = 0;
1320
1321   return address;
1322 }
1323
1324 GAddress *GAddress_copy(GAddress *address)
1325 {
1326   GAddress *addr2;
1327
1328   assert(address != NULL);
1329
1330   if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1331     return NULL;
1332
1333   memcpy(addr2, address, sizeof(GAddress));
1334
1335   if (address->m_addr)
1336   {
1337     addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1338     if (addr2->m_addr == NULL)
1339     {
1340       free(addr2);
1341       return NULL;
1342     }
1343     memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1344   }
1345
1346   return addr2;
1347 }
1348
1349 void GAddress_destroy(GAddress *address)
1350 {
1351   assert(address != NULL);
1352
1353   if (address->m_addr)
1354     free(address->m_addr);
1355
1356 /*    free(address); */
1357 }
1358
1359 void GAddress_SetFamily(GAddress *address, GAddressType type)
1360 {
1361   assert(address != NULL);
1362
1363   address->m_family = type;
1364 }
1365
1366 GAddressType GAddress_GetFamily(GAddress *address)
1367 {
1368   assert(address != NULL);
1369
1370   return address->m_family;
1371 }
1372
1373 GSocketError _GAddress_translate_from(GAddress *address,
1374                                       struct sockaddr *addr, int len)
1375 {
1376   address->m_realfamily = addr->sa_family;
1377   switch (addr->sa_family)
1378   {
1379     case AF_INET:
1380       address->m_family = GSOCK_INET;
1381       break;
1382     case AF_UNIX:
1383       address->m_family = GSOCK_UNIX;
1384       break;
1385 #ifdef AF_INET6
1386     case AF_INET6:
1387       address->m_family = GSOCK_INET6;
1388       break;
1389 #endif
1390     default:
1391     {
1392       address->m_error = GSOCK_INVOP;
1393       return GSOCK_INVOP;
1394     }
1395   }
1396
1397   if (address->m_addr)
1398     free(address->m_addr);
1399
1400   address->m_len  = len;
1401   address->m_addr = (struct sockaddr *)malloc(len);
1402
1403   if (address->m_addr == NULL)
1404   {
1405     address->m_error = GSOCK_MEMERR;
1406     return GSOCK_MEMERR;
1407   }
1408   memcpy(address->m_addr, addr, len);
1409
1410   return GSOCK_NOERROR;
1411 }
1412
1413 GSocketError _GAddress_translate_to(GAddress *address,
1414                                     struct sockaddr **addr, int *len)
1415 {
1416   if (!address->m_addr)
1417   {
1418     address->m_error = GSOCK_INVADDR;
1419     return GSOCK_INVADDR;
1420   }
1421
1422   *len = address->m_len;
1423   *addr = (struct sockaddr *)malloc(address->m_len);
1424   if (*addr == NULL)
1425   {
1426     address->m_error = GSOCK_MEMERR;
1427     return GSOCK_MEMERR;
1428   }
1429
1430   memcpy(*addr, address->m_addr, address->m_len);
1431   return GSOCK_NOERROR;
1432 }
1433
1434 /*
1435  * -------------------------------------------------------------------------
1436  * Internet address family
1437  * -------------------------------------------------------------------------
1438  */
1439
1440 GSocketError _GAddress_Init_INET(GAddress *address)
1441 {
1442   address->m_len  = sizeof(struct sockaddr_in);
1443   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1444   if (address->m_addr == NULL)
1445   {
1446     address->m_error = GSOCK_MEMERR;
1447     return GSOCK_MEMERR;
1448   }
1449
1450   address->m_family = GSOCK_INET;
1451   address->m_realfamily = PF_INET;
1452   ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
1453   ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
1454
1455   return GSOCK_NOERROR;
1456 }
1457
1458 GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
1459 {
1460   struct hostent *he;
1461   struct in_addr *addr;
1462
1463   assert(address != NULL);
1464
1465   CHECK_ADDRESS(address, INET);
1466
1467   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1468
1469   /* If it is a numeric host name, convert it now */
1470 #if defined(HAVE_INET_ATON)
1471   if (inet_aton(hostname, addr) == 0)
1472   {
1473 #elif defined(HAVE_INET_ADDR)
1474   if ( (addr->s_addr = inet_addr(hostname)) == -1 )
1475   {
1476 #else
1477   /* Use gethostbyname by default */
1478   if (1)
1479   {
1480 #endif
1481     struct in_addr *array_addr;
1482
1483     /* It is a real name, we solve it */
1484     if ((he = gethostbyname(hostname)) == NULL)
1485     {
1486       /* Reset to invalid address */
1487       addr->s_addr = INADDR_NONE;
1488       address->m_error = GSOCK_NOHOST;
1489       return GSOCK_NOHOST;
1490     }
1491     array_addr = (struct in_addr *) *(he->h_addr_list);
1492     addr->s_addr = array_addr[0].s_addr;
1493   }
1494   return GSOCK_NOERROR;
1495 }
1496
1497 GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1498 {
1499   return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1500 }
1501
1502 GSocketError GAddress_INET_SetHostAddress(GAddress *address,
1503                                           unsigned long hostaddr)
1504 {
1505   struct in_addr *addr;
1506
1507   assert(address != NULL);
1508
1509   CHECK_ADDRESS(address, INET);
1510
1511   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1512   addr->s_addr = hostaddr;
1513
1514   return GSOCK_NOERROR;
1515 }
1516
1517 GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1518                                        const char *protocol)
1519 {
1520   struct servent *se;
1521   struct sockaddr_in *addr;
1522
1523   assert(address != NULL);
1524   CHECK_ADDRESS(address, INET);
1525
1526   if (!port)
1527   {
1528     address->m_error = GSOCK_INVPORT;
1529     return GSOCK_INVPORT;
1530   }
1531
1532   se = getservbyname(port, protocol);
1533   if (!se)
1534   {
1535     if (isdigit((int)port[0]))
1536     {
1537       int port_int;
1538
1539       port_int = atoi(port);
1540       addr = (struct sockaddr_in *)address->m_addr;
1541       addr->sin_port = htons(port_int);
1542       return GSOCK_NOERROR;
1543     }
1544
1545     address->m_error = GSOCK_INVPORT;
1546     return GSOCK_INVPORT;
1547   }
1548
1549   addr = (struct sockaddr_in *)address->m_addr;
1550   addr->sin_port = se->s_port;
1551
1552   return GSOCK_NOERROR;
1553 }
1554
1555 GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1556 {
1557   struct sockaddr_in *addr;
1558
1559   assert(address != NULL);
1560   CHECK_ADDRESS(address, INET);
1561
1562   addr = (struct sockaddr_in *)address->m_addr;
1563   addr->sin_port = htons(port);
1564
1565   return GSOCK_NOERROR;
1566 }
1567
1568 GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1569 {
1570   struct hostent *he;
1571   char *addr_buf;
1572   struct sockaddr_in *addr;
1573
1574   assert(address != NULL);
1575   CHECK_ADDRESS(address, INET);
1576
1577   addr = (struct sockaddr_in *)address->m_addr;
1578   addr_buf = (char *)&(addr->sin_addr);
1579
1580   he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
1581   if (he == NULL)
1582   {
1583     address->m_error = GSOCK_NOHOST;
1584     return GSOCK_NOHOST;
1585   }
1586
1587   strncpy(hostname, he->h_name, sbuf);
1588
1589   return GSOCK_NOERROR;
1590 }
1591
1592 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1593 {
1594   struct sockaddr_in *addr;
1595
1596   assert(address != NULL);
1597   CHECK_ADDRESS_RETVAL(address, INET, 0);
1598
1599   addr = (struct sockaddr_in *)address->m_addr;
1600
1601   return addr->sin_addr.s_addr;
1602 }
1603
1604 unsigned short GAddress_INET_GetPort(GAddress *address)
1605 {
1606   struct sockaddr_in *addr;
1607
1608   assert(address != NULL);
1609   CHECK_ADDRESS_RETVAL(address, INET, 0);
1610
1611   addr = (struct sockaddr_in *)address->m_addr;
1612   return ntohs(addr->sin_port);
1613 }
1614
1615 /*
1616  * -------------------------------------------------------------------------
1617  * Unix address family
1618  * -------------------------------------------------------------------------
1619  */
1620
1621 #ifdef __EMX__
1622 GSocketError _GAddress_Init_UNIX(GAddress *address)
1623 {
1624   address->m_len  = sizeof(struct sockaddr_un);
1625   address->m_addr = (struct sockaddr *)malloc(address->m_len);
1626   if (address->m_addr == NULL)
1627   {
1628     address->m_error = GSOCK_MEMERR;
1629     return GSOCK_MEMERR;
1630   }
1631
1632   address->m_family = GSOCK_UNIX;
1633   address->m_realfamily = PF_UNIX;
1634   ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
1635   ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
1636
1637   return GSOCK_NOERROR;
1638 }
1639
1640 GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
1641 {
1642   struct sockaddr_un *addr;
1643
1644   assert(address != NULL);
1645
1646   CHECK_ADDRESS(address, UNIX);
1647
1648   addr = ((struct sockaddr_un *)address->m_addr);
1649   memcpy(addr->sun_path, path, strlen(path));
1650
1651   return GSOCK_NOERROR;
1652 }
1653
1654 GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
1655 {
1656   struct sockaddr_un *addr;
1657
1658   assert(address != NULL);
1659   CHECK_ADDRESS(address, UNIX);
1660
1661   addr = (struct sockaddr_un *)address->m_addr;
1662
1663   strncpy(path, addr->sun_path, sbuf);
1664
1665   return GSOCK_NOERROR;
1666 }
1667 #endif
1668   /* __EMX__ */
1669 #endif
1670   /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
1671