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  * Licence: The wxWindows licence
   8  * CVSID:   $Id$
   9  * -------------------------------------------------------------------------
  10  */
  11
  12 /*
  13  * PLEASE don't put C++ comments here - this is a C source file.
  14  */
  15
  16 #ifndef __GSOCKET_STANDALONE__
  17 #include "wx/setup.h"
  18 #endif
  19
  20 #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
  21
  22 #include <assert.h>
  23 #include <sys/types.h>
  24 #include <netdb.h>
  25 #include <sys/ioctl.h>
  26
  27 #ifdef __VMS__
  28 #include <socket.h>
  29 struct sockaddr_un
  30 {
  31     u_char  sun_len;        /* sockaddr len including null */
  32     u_char  sun_family;     /* AF_UNIX */
  33     char    sun_path[108];  /* path name (gag) */
  34 };
  35 #else
  36 #include <sys/socket.h>
  37 #include <sys/un.h>
  38 #endif
  39
  40 #include <sys/time.h>
  41 #include <netinet/in.h>
  42 #include <arpa/inet.h>
  43 #include <errno.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <stddef.h>
  49 #include <ctype.h>
  50 #ifdef sun
  51 #  include <sys/filio.h>
  52 #endif
  53 #ifdef sgi
  54 #  include <bstring.h>
  55 #endif
  56 #include <signal.h>
  57
  58 #ifndef SOCKLEN_T
  59
  60 #ifdef VMS
  61 #  define SOCKLEN_T unsigned int
  62 #else
  63 #  ifdef __GLIBC__
  64 #    if __GLIBC__ == 2
  65 #      define SOCKLEN_T socklen_t
  66 #    endif
  67 #  else
  68 #    define SOCKLEN_T int
  69 #  endif
  70 #endif
  71
  72 #endif /* SOCKLEN_T */
  73
  74 /*
  75  * MSW defines this, Unices don't.
  76  */
  77 #ifndef INVALID_SOCKET
  78 #define INVALID_SOCKET -1
  79 #endif
  80
  81 /* UnixWare reportedly needs this for FIONBIO definition */
  82 #ifdef __UNIXWARE__
  83 #include <sys/filio.h>
  84 #endif
  85
  86 /*
  87  * INADDR_BROADCAST is identical to INADDR_NONE which is not defined
  88  * on all systems. INADDR_BROADCAST should be fine to indicate an error.
  89  */
  90 #ifndef INADDR_NONE
  91 #define INADDR_NONE INADDR_BROADCAST
  92 #endif
  93
  94 #define MASK_SIGNAL()                       \
  95 {                                           \
  96   void (*old_handler)(int);                 \
  97                                             \
  98   old_handler = signal(SIGPIPE, SIG_IGN);
  99
 100 #define UNMASK_SIGNAL()                     \
 101   signal(SIGPIPE, old_handler);             \
 102 }
 103
 104
 105 #ifndef __GSOCKET_STANDALONE__
 106 #  include "wx/unix/gsockunx.h"
 107 #  include "wx/gsocket.h"
 108 #else
 109 #  include "gsockunx.h"
 110 #  include "gsocket.h"
 111 #endif /* __GSOCKET_STANDALONE__ */
 112
 113 /* debugging helpers */
 114 #ifdef __GSOCKET_DEBUG__
 115 #  define GSocket_Debug(args) printf args
 116 #else
 117 #  define GSocket_Debug(args)
 118 #endif /* __GSOCKET_DEBUG__ */
 119
 120 /* Table of GUI-related functions. We must call them indirectly because
 121  * of wxBase and GUI separation: */
 122
 123 static struct GSocketGUIFunctionsTable *gs_gui_functions;
 124
 125 #define USE_GUI() (gs_gui_functions != NULL)
 126
 127 /* Define macros to simplify indirection: */
 128 #define _GSocket_GUI_Init() \
 129     if (gs_gui_functions) gs_gui_functions->GUI_Init()
 130 #define _GSocket_GUI_Cleanup() \
 131     if (gs_gui_functions) gs_gui_functions->GUI_Cleanup()
 132 #define _GSocket_GUI_Init_Socket(socket) \
 133     (gs_gui_functions ? gs_gui_functions->GUI_Init_Socket(socket) : 1)
 134 #define _GSocket_GUI_Destroy_Socket(socket) \
 135     if (gs_gui_functions) gs_gui_functions->GUI_Destroy_Socket(socket)
 136 #define _GSocket_Enable_Events(socket) \
 137     if (gs_gui_functions) gs_gui_functions->Enable_Events(socket)
 138 #define _GSocket_Disable_Events(socket) \
 139     if (gs_gui_functions) gs_gui_functions->Disable_Events(socket)
 140 #define _GSocket_Install_Callback(socket, event) \
 141     if (gs_gui_functions) gs_gui_functions->Install_Callback(socket, event)
 142 #define _GSocket_Uninstall_Callback(socket, event) \
 143     if (gs_gui_functions) gs_gui_functions->Uninstall_Callback(socket, event)
 144
 145 static struct GSocketBaseFunctionsTable gs_base_functions =
 146 {
 147     _GSocket_Detected_Read,
 148     _GSocket_Detected_Write
 149 };
 150
 151 /* Global initialisers */
 152
 153 void GSocket_SetGUIFunctions(struct GSocketGUIFunctionsTable *guifunc)
 154 {
 155   gs_gui_functions = guifunc;
 156 }
 157
 158 int GSocket_Init(void)
 159 {
 160   if (gs_gui_functions)
 161   {
 162       if ( !gs_gui_functions->GUI_Init() )
 163         return 0;
 164   }
 165   return 1;
 166 }
 167
 168 void GSocket_Cleanup(void)
 169 {
 170   if (gs_gui_functions)
 171   {
 172       gs_gui_functions->GUI_Cleanup();
 173   }
 174 }
 175
 176 /* Constructors / Destructors for GSocket */
 177
 178 GSocket *GSocket_new(void)
 179 {
 180   int i, success;
 181   GSocket *socket;
 182
 183   socket = (GSocket *)malloc(sizeof(GSocket));
 184
 185   if (socket == NULL)
 186     return NULL;
 187
 188   socket->m_fd                  = INVALID_SOCKET;
 189   for (i=0;i<GSOCK_MAX_EVENT;i++)
 190   {
 191     socket->m_cbacks[i]         = NULL;
 192   }
 193   socket->m_detected            = 0;
 194   socket->m_local               = NULL;
 195   socket->m_peer                = NULL;
 196   socket->m_error               = GSOCK_NOERROR;
 197   socket->m_server              = FALSE;
 198   socket->m_stream              = TRUE;
 199   socket->m_gui_dependent       = NULL;
 200   socket->m_non_blocking        = FALSE;
 201   socket->m_timeout             = 10*60*1000;
 202                                 /* 10 minutes * 60 sec * 1000 millisec */
 203   socket->m_establishing        = FALSE;
 204
 205   socket->m_functions           = &gs_base_functions;
 206
 207   /* Per-socket GUI-specific initialization */
 208   success = _GSocket_GUI_Init_Socket(socket);
 209   if (!success)
 210   {
 211     free(socket);
 212     return NULL;
 213   }
 214
 215   return socket;
 216 }
 217
 218 void GSocket_close(GSocket *socket)
 219 {
 220     _GSocket_Disable_Events(socket);
 221     close(socket->m_fd);
 222     socket->m_fd = INVALID_SOCKET;
 223 }
 224
 225 void GSocket_destroy(GSocket *socket)
 226 {
 227   assert(socket != NULL);
 228
 229   /* Check that the socket is really shutdowned */
 230   if (socket->m_fd != INVALID_SOCKET)
 231     GSocket_Shutdown(socket);
 232
 233   /* Per-socket GUI-specific cleanup */
 234   _GSocket_GUI_Destroy_Socket(socket);
 235
 236   /* Destroy private addresses */
 237   if (socket->m_local)
 238     GAddress_destroy(socket->m_local);
 239
 240   if (socket->m_peer)
 241     GAddress_destroy(socket->m_peer);
 242
 243   /* Destroy the socket itself */
 244   free(socket);
 245 }
 246
 247 /* GSocket_Shutdown:
 248  *  Disallow further read/write operations on this socket, close
 249  *  the fd and disable all callbacks.
 250  */
 251 void GSocket_Shutdown(GSocket *socket)
 252 {
 253   int evt;
 254
 255   assert(socket != NULL);
 256
 257   /* If socket has been created, shutdown it */
 258   if (socket->m_fd != INVALID_SOCKET)
 259   {
 260     shutdown(socket->m_fd, 2);
 261     GSocket_close(socket);
 262   }
 263
 264   /* Disable GUI callbacks */
 265   for (evt = 0; evt < GSOCK_MAX_EVENT; evt++)
 266     socket->m_cbacks[evt] = NULL;
 267
 268   socket->m_detected = GSOCK_LOST_FLAG;
 269 }
 270
 271 /* Address handling */
 272
 273 /* GSocket_SetLocal:
 274  * GSocket_GetLocal:
 275  * GSocket_SetPeer:
 276  * GSocket_GetPeer:
 277  *  Set or get the local or peer address for this socket. The 'set'
 278  *  functions return GSOCK_NOERROR on success, an error code otherwise.
 279  *  The 'get' functions return a pointer to a GAddress object on success,
 280  *  or NULL otherwise, in which case they set the error code of the
 281  *  corresponding GSocket.
 282  *
 283  *  Error codes:
 284  *    GSOCK_INVSOCK - the socket is not valid.
 285  *    GSOCK_INVADDR - the address is not valid.
 286  */
 287 GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address)
 288 {
 289   assert(socket != NULL);
 290
 291   /* the socket must be initialized, or it must be a server */
 292   if ((socket->m_fd != INVALID_SOCKET && !socket->m_server))
 293   {
 294     socket->m_error = GSOCK_INVSOCK;
 295     return GSOCK_INVSOCK;
 296   }
 297
 298   /* check address */
 299   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
 300   {
 301     socket->m_error = GSOCK_INVADDR;
 302     return GSOCK_INVADDR;
 303   }
 304
 305   if (socket->m_local)
 306     GAddress_destroy(socket->m_local);
 307
 308   socket->m_local = GAddress_copy(address);
 309
 310   return GSOCK_NOERROR;
 311 }
 312
 313 GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address)
 314 {
 315   assert(socket != NULL);
 316
 317   /* check address */
 318   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
 319   {
 320     socket->m_error = GSOCK_INVADDR;
 321     return GSOCK_INVADDR;
 322   }
 323
 324   if (socket->m_peer)
 325     GAddress_destroy(socket->m_peer);
 326
 327   socket->m_peer = GAddress_copy(address);
 328
 329   return GSOCK_NOERROR;
 330 }
 331
 332 GAddress *GSocket_GetLocal(GSocket *socket)
 333 {
 334   GAddress *address;
 335   struct sockaddr addr;
 336   SOCKLEN_T size = sizeof(addr);
 337   GSocketError err;
 338
 339   assert(socket != NULL);
 340
 341   /* try to get it from the m_local var first */
 342   if (socket->m_local)
 343     return GAddress_copy(socket->m_local);
 344
 345   /* else, if the socket is initialized, try getsockname */
 346   if (socket->m_fd == INVALID_SOCKET)
 347   {
 348     socket->m_error = GSOCK_INVSOCK;
 349     return NULL;
 350   }
 351
 352   if (getsockname(socket->m_fd, &addr, (SOCKLEN_T *) &size) < 0)
 353   {
 354     socket->m_error = GSOCK_IOERR;
 355     return NULL;
 356   }
 357
 358   /* got a valid address from getsockname, create a GAddress object */
 359   address = GAddress_new();
 360   if (address == NULL)
 361   {
 362     socket->m_error = GSOCK_MEMERR;
 363     return NULL;
 364   }
 365
 366   err = _GAddress_translate_from(address, &addr, size);
 367   if (err != GSOCK_NOERROR)
 368   {
 369     GAddress_destroy(address);
 370     socket->m_error = err;
 371     return NULL;
 372   }
 373
 374   return address;
 375 }
 376
 377 GAddress *GSocket_GetPeer(GSocket *socket)
 378 {
 379   assert(socket != NULL);
 380
 381   /* try to get it from the m_peer var */
 382   if (socket->m_peer)
 383     return GAddress_copy(socket->m_peer);
 384
 385   return NULL;
 386 }
 387
 388 /* Server specific parts */
 389
 390 /* GSocket_SetServer:
 391  *  Sets up this socket as a server. The local address must have been
 392  *  set with GSocket_SetLocal() before GSocket_SetServer() is called.
 393  *  Returns GSOCK_NOERROR on success, one of the following otherwise:
 394  *
 395  *  Error codes:
 396  *    GSOCK_INVSOCK - the socket is in use.
 397  *    GSOCK_INVADDR - the local address has not been set.
 398  *    GSOCK_IOERR   - low-level error.
 399  */
 400 GSocketError GSocket_SetServer(GSocket *sck)
 401 {
 402   int arg = 1;
 403
 404   assert(sck != NULL);
 405
 406   /* must not be in use */
 407   if (sck->m_fd != INVALID_SOCKET)
 408   {
 409     sck->m_error = GSOCK_INVSOCK;
 410     return GSOCK_INVSOCK;
 411   }
 412
 413   /* the local addr must have been set */
 414   if (!sck->m_local)
 415   {
 416     sck->m_error = GSOCK_INVADDR;
 417     return GSOCK_INVADDR;
 418   }
 419
 420   /* Initialize all fields */
 421   sck->m_stream   = TRUE;
 422   sck->m_server   = TRUE;
 423   sck->m_oriented = TRUE;
 424
 425   /* Create the socket */
 426   sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0);
 427
 428   if (sck->m_fd == INVALID_SOCKET)
 429   {
 430     sck->m_error = GSOCK_IOERR;
 431     return GSOCK_IOERR;
 432   }
 433
 434   ioctl(sck->m_fd, FIONBIO, &arg);
 435   _GSocket_Enable_Events(sck);
 436
 437   /* Bind to the local address,
 438    * retrieve the actual address bound,
 439    * and listen up to 5 connections.
 440    */
 441   if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
 442       (getsockname(sck->m_fd,
 443                    sck->m_local->m_addr,
 444                    (SOCKLEN_T *) &sck->m_local->m_len) != 0) ||
 445       (listen(sck->m_fd, 5) != 0))
 446   {
 447     GSocket_close(sck);
 448     sck->m_error = GSOCK_IOERR;
 449     return GSOCK_IOERR;
 450   }
 451
 452   return GSOCK_NOERROR;
 453 }
 454
 455 /* GSocket_WaitConnection:
 456  *  Waits for an incoming client connection. Returns a pointer to
 457  *  a GSocket object, or NULL if there was an error, in which case
 458  *  the last error field will be updated for the calling GSocket.
 459  *
 460  *  Error codes (set in the calling GSocket)
 461  *    GSOCK_INVSOCK    - the socket is not valid or not a server.
 462  *    GSOCK_TIMEDOUT   - timeout, no incoming connections.
 463  *    GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking.
 464  *    GSOCK_MEMERR     - couldn't allocate memory.
 465  *    GSOCK_IOERR      - low-level error.
 466  */
 467 GSocket *GSocket_WaitConnection(GSocket *socket)
 468 {
 469   struct sockaddr from;
 470   SOCKLEN_T fromlen = sizeof(from);
 471   GSocket *connection;
 472   GSocketError err;
 473   int arg = 1;
 474
 475   assert(socket != NULL);
 476
 477   /* Reenable CONNECTION events */
 478   _GSocket_Enable(socket, GSOCK_CONNECTION);
 479
 480   /* If the socket has already been created, we exit immediately */
 481   if (socket->m_fd == INVALID_SOCKET || !socket->m_server)
 482   {
 483     socket->m_error = GSOCK_INVSOCK;
 484     return NULL;
 485   }
 486
 487   /* Create a GSocket object for the new connection */
 488   connection = GSocket_new();
 489
 490   if (!connection)
 491   {
 492     socket->m_error = GSOCK_MEMERR;
 493     return NULL;
 494   }
 495
 496   /* Wait for a connection (with timeout) */
 497   if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
 498   {
 499     GSocket_destroy(connection);
 500     /* socket->m_error set by _GSocket_Input_Timeout */
 501     return NULL;
 502   }
 503
 504   connection->m_fd = accept(socket->m_fd, &from, (SOCKLEN_T *) &fromlen);
 505
 506   if (connection->m_fd == INVALID_SOCKET)
 507   {
 508     if (errno == EWOULDBLOCK)
 509       socket->m_error = GSOCK_WOULDBLOCK;
 510     else
 511       socket->m_error = GSOCK_IOERR;
 512
 513     GSocket_destroy(connection);
 514     return NULL;
 515   }
 516
 517   /* Initialize all fields */
 518   connection->m_server   = FALSE;
 519   connection->m_stream   = TRUE;
 520   connection->m_oriented = TRUE;
 521
 522   /* Setup the peer address field */
 523   connection->m_peer = GAddress_new();
 524   if (!connection->m_peer)
 525   {
 526     GSocket_destroy(connection);
 527     socket->m_error = GSOCK_MEMERR;
 528     return NULL;
 529   }
 530   err = _GAddress_translate_from(connection->m_peer, &from, fromlen);
 531   if (err != GSOCK_NOERROR)
 532   {
 533     GAddress_destroy(connection->m_peer);
 534     GSocket_destroy(connection);
 535     socket->m_error = err;
 536     return NULL;
 537   }
 538
 539   ioctl(connection->m_fd, FIONBIO, &arg);
 540   _GSocket_Enable_Events(connection);
 541
 542   return connection;
 543 }
 544
 545 /* Client specific parts */
 546
 547 /* GSocket_Connect:
 548  *  For stream (connection oriented) sockets, GSocket_Connect() tries
 549  *  to establish a client connection to a server using the peer address
 550  *  as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
 551  *  connection has been succesfully established, or one of the error
 552  *  codes listed below. Note that for nonblocking sockets, a return
 553  *  value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
 554  *  request can be completed later; you should use GSocket_Select()
 555  *  to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the
 556  *  corresponding asynchronous events.
 557  *
 558  *  For datagram (non connection oriented) sockets, GSocket_Connect()
 559  *  just sets the peer address established with GSocket_SetPeer() as
 560  *  default destination.
 561  *
 562  *  Error codes:
 563  *    GSOCK_INVSOCK    - the socket is in use or not valid.
 564  *    GSOCK_INVADDR    - the peer address has not been established.
 565  *    GSOCK_TIMEDOUT   - timeout, the connection failed.
 566  *    GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only)
 567  *    GSOCK_MEMERR     - couldn't allocate memory.
 568  *    GSOCK_IOERR      - low-level error.
 569  */
 570 GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream)
 571 {
 572   int err, ret;
 573   int arg = 1;
 574
 575   assert(sck != NULL);
 576
 577   /* Enable CONNECTION events (needed for nonblocking connections) */
 578   _GSocket_Enable(sck, GSOCK_CONNECTION);
 579
 580   if (sck->m_fd != INVALID_SOCKET)
 581   {
 582     sck->m_error = GSOCK_INVSOCK;
 583     return GSOCK_INVSOCK;
 584   }
 585
 586   if (!sck->m_peer)
 587   {
 588     sck->m_error = GSOCK_INVADDR;
 589     return GSOCK_INVADDR;
 590   }
 591
 592   /* Streamed or dgram socket? */
 593   sck->m_stream   = (stream == GSOCK_STREAMED);
 594   sck->m_oriented = TRUE;
 595   sck->m_server   = FALSE;
 596   sck->m_establishing = FALSE;
 597
 598   /* Create the socket */
 599   sck->m_fd = socket(sck->m_peer->m_realfamily,
 600                      sck->m_stream? SOCK_STREAM : SOCK_DGRAM, 0);
 601
 602   if (sck->m_fd == INVALID_SOCKET)
 603   {
 604     sck->m_error = GSOCK_IOERR;
 605     return GSOCK_IOERR;
 606   }
 607
 608   ioctl(sck->m_fd, FIONBIO, &arg);
 609   _GSocket_Enable_Events(sck);
 610
 611   /* Connect it to the peer address, with a timeout (see below) */
 612   ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len);
 613
 614   if (ret == -1)
 615   {
 616     err = errno;
 617
 618     /* If connect failed with EINPROGRESS and the GSocket object
 619      * is in blocking mode, we select() for the specified timeout
 620      * checking for writability to see if the connection request
 621      * completes.
 622      */
 623     if ((err == EINPROGRESS) && (!sck->m_non_blocking))
 624     {
 625       if (_GSocket_Output_Timeout(sck) == GSOCK_TIMEDOUT)
 626       {
 627         GSocket_close(sck);
 628         /* sck->m_error is set in _GSocket_Output_Timeout */
 629         return GSOCK_TIMEDOUT;
 630       }
 631       else
 632       {
 633         int error;
 634         SOCKLEN_T len = sizeof(error);
 635
 636         getsockopt(sck->m_fd, SOL_SOCKET, SO_ERROR, (void*) &error, &len);
 637
 638         if (!error)
 639           return GSOCK_NOERROR;
 640       }
 641     }
 642
 643     /* If connect failed with EINPROGRESS and the GSocket object
 644      * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK
 645      * (and return GSOCK_WOULDBLOCK) but we don't close the socket;
 646      * this way if the connection completes, a GSOCK_CONNECTION
 647      * event will be generated, if enabled.
 648      */
 649     if ((err == EINPROGRESS) && (sck->m_non_blocking))
 650     {
 651       sck->m_establishing = TRUE;
 652       sck->m_error = GSOCK_WOULDBLOCK;
 653       return GSOCK_WOULDBLOCK;
 654     }
 655
 656     /* If connect failed with an error other than EINPROGRESS,
 657      * then the call to GSocket_Connect has failed.
 658      */
 659     GSocket_close(sck);
 660     sck->m_error = GSOCK_IOERR;
 661     return GSOCK_IOERR;
 662   }
 663
 664   return GSOCK_NOERROR;
 665 }
 666
 667 /* Datagram sockets */
 668
 669 /* GSocket_SetNonOriented:
 670  *  Sets up this socket as a non-connection oriented (datagram) socket.
 671  *  Before using this function, the local address must have been set
 672  *  with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR
 673  *  on success, or one of the following otherwise.
 674  *
 675  *  Error codes:
 676  *    GSOCK_INVSOCK - the socket is in use.
 677  *    GSOCK_INVADDR - the local address has not been set.
 678  *    GSOCK_IOERR   - low-level error.
 679  */
 680 GSocketError GSocket_SetNonOriented(GSocket *sck)
 681 {
 682   int arg = 1;
 683
 684   assert(sck != NULL);
 685
 686   if (sck->m_fd != INVALID_SOCKET)
 687   {
 688     sck->m_error = GSOCK_INVSOCK;
 689     return GSOCK_INVSOCK;
 690   }
 691
 692   if (!sck->m_local)
 693   {
 694     sck->m_error = GSOCK_INVADDR;
 695     return GSOCK_INVADDR;
 696   }
 697
 698   /* Initialize all fields */
 699   sck->m_stream   = FALSE;
 700   sck->m_server   = FALSE;
 701   sck->m_oriented = FALSE;
 702
 703   /* Create the socket */
 704   sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0);
 705
 706   if (sck->m_fd == INVALID_SOCKET)
 707   {
 708     sck->m_error = GSOCK_IOERR;
 709     return GSOCK_IOERR;
 710   }
 711
 712   ioctl(sck->m_fd, FIONBIO, &arg);
 713   _GSocket_Enable_Events(sck);
 714
 715   /* Bind to the local address,
 716    * and retrieve the actual address bound.
 717    */
 718   if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
 719       (getsockname(sck->m_fd,
 720                    sck->m_local->m_addr,
 721                    (SOCKLEN_T *) &sck->m_local->m_len) != 0))
 722   {
 723     GSocket_close(sck);
 724     sck->m_error = GSOCK_IOERR;
 725     return GSOCK_IOERR;
 726   }
 727
 728   return GSOCK_NOERROR;
 729 }
 730
 731 /* Generic IO */
 732
 733 /* Like recv(), send(), ... */
 734 int GSocket_Read(GSocket *socket, char *buffer, int size)
 735 {
 736   int ret;
 737
 738   assert(socket != NULL);
 739
 740   /* Reenable INPUT events */
 741   _GSocket_Enable(socket, GSOCK_INPUT);
 742
 743   if (socket->m_fd == INVALID_SOCKET || socket->m_server)
 744   {
 745     socket->m_error = GSOCK_INVSOCK;
 746     return -1;
 747   }
 748
 749   /* If the socket is blocking, wait for data (with a timeout) */
 750   if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
 751     return -1;
 752
 753   /* Read the data */
 754   if (socket->m_stream)
 755     ret = _GSocket_Recv_Stream(socket, buffer, size);
 756   else
 757     ret = _GSocket_Recv_Dgram(socket, buffer, size);
 758
 759   if (ret == -1)
 760   {
 761     if (errno == EWOULDBLOCK)
 762       socket->m_error = GSOCK_WOULDBLOCK;
 763     else
 764       socket->m_error = GSOCK_IOERR;
 765   }
 766
 767   return ret;
 768 }
 769
 770 int GSocket_Write(GSocket *socket, const char *buffer, int size)
 771 {
 772   int ret;
 773
 774   assert(socket != NULL);
 775
 776   GSocket_Debug(( "GSocket_Write #1, size %d\n", size ));
 777
 778   if (socket->m_fd == INVALID_SOCKET || socket->m_server)
 779   {
 780     socket->m_error = GSOCK_INVSOCK;
 781     return -1;
 782   }
 783
 784   GSocket_Debug(( "GSocket_Write #2, size %d\n", size ));
 785
 786   /* If the socket is blocking, wait for writability (with a timeout) */
 787   if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT)
 788     return -1;
 789
 790   GSocket_Debug(( "GSocket_Write #3, size %d\n", size ));
 791
 792   /* Write the data */
 793   if (socket->m_stream)
 794     ret = _GSocket_Send_Stream(socket, buffer, size);
 795   else
 796     ret = _GSocket_Send_Dgram(socket, buffer, size);
 797
 798   GSocket_Debug(( "GSocket_Write #4, size %d\n", size ));
 799
 800   if (ret == -1)
 801   {
 802     if (errno == EWOULDBLOCK)
 803     {
 804       socket->m_error = GSOCK_WOULDBLOCK;
 805       GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));
 806     }
 807     else
 808     {
 809       socket->m_error = GSOCK_IOERR;
 810       GSocket_Debug(( "GSocket_Write error IOERR\n" ));
 811     }
 812
 813     /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
 814      * in MSW). Once the first OUTPUT event is received, users can assume
 815      * that the socket is writable until a read operation fails. Only then
 816      * will further OUTPUT events be posted.
 817      */
 818     _GSocket_Enable(socket, GSOCK_OUTPUT);
 819     return -1;
 820   }
 821
 822   GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret ));
 823
 824   return ret;
 825 }
 826
 827 /* GSocket_Select:
 828  *  Polls the socket to determine its status. This function will
 829  *  check for the events specified in the 'flags' parameter, and
 830  *  it will return a mask indicating which operations can be
 831  *  performed. This function won't block, regardless of the
 832  *  mode (blocking | nonblocking) of the socket.
 833  */
 834 GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
 835 {
 836   if (!USE_GUI())
 837   {
 838
 839     GSocketEventFlags result = 0;
 840     fd_set readfds;
 841     fd_set writefds;
 842     fd_set exceptfds;
 843     struct timeval tv;
 844
 845     /* Do not use a static struct, Linux can garble it */
 846     tv.tv_sec = 0;
 847     tv.tv_usec = 0;
 848
 849     assert(socket != NULL);
 850
 851     FD_ZERO(&readfds);
 852     FD_ZERO(&writefds);
 853     FD_ZERO(&exceptfds);
 854     FD_SET(socket->m_fd, &readfds);
 855     FD_SET(socket->m_fd, &writefds);
 856     FD_SET(socket->m_fd, &exceptfds);
 857
 858     /* Check 'sticky' CONNECTION flag first */
 859     result |= (GSOCK_CONNECTION_FLAG & socket->m_detected);
 860
 861     /* If we have already detected a LOST event, then don't try
 862      * to do any further processing.
 863      */
 864     if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
 865     {
 866       socket->m_establishing = FALSE;
 867
 868       return (GSOCK_LOST_FLAG & flags);
 869     }
 870
 871     /* Try select now */
 872     if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0)
 873     {
 874       /* What to do here? */
 875       return (result & flags);
 876     }
 877
 878     /* Check for readability */
 879     if (FD_ISSET(socket->m_fd, &readfds))
 880     {
 881       char c;
 882
 883       if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
 884       {
 885         result |= GSOCK_INPUT_FLAG;
 886       }
 887       else
 888       {
 889         if (socket->m_server && socket->m_stream)
 890         {
 891           result |= GSOCK_CONNECTION_FLAG;
 892           socket->m_detected |= GSOCK_CONNECTION_FLAG;
 893         }
 894         else
 895         {
 896           socket->m_detected = GSOCK_LOST_FLAG;
 897           socket->m_establishing = FALSE;
 898
 899           /* LOST event: Abort any further processing */
 900           return (GSOCK_LOST_FLAG & flags);
 901         }
 902       }
 903     }
 904
 905     /* Check for writability */
 906     if (FD_ISSET(socket->m_fd, &writefds))
 907     {
 908       if (socket->m_establishing && !socket->m_server)
 909       {
 910         int error;
 911         SOCKLEN_T len = sizeof(error);
 912
 913         socket->m_establishing = FALSE;
 914
 915         getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
 916
 917         if (error)
 918         {
 919           socket->m_detected = GSOCK_LOST_FLAG;
 920
 921           /* LOST event: Abort any further processing */
 922           return (GSOCK_LOST_FLAG & flags);
 923         }
 924         else
 925         {
 926           result |= GSOCK_CONNECTION_FLAG;
 927           socket->m_detected |= GSOCK_CONNECTION_FLAG;
 928         }
 929       }
 930       else
 931       {
 932         result |= GSOCK_OUTPUT_FLAG;
 933       }
 934     }
 935
 936     /* Check for exceptions and errors (is this useful in Unices?) */
 937     if (FD_ISSET(socket->m_fd, &exceptfds))
 938     {
 939       socket->m_establishing = FALSE;
 940       socket->m_detected = GSOCK_LOST_FLAG;
 941
 942       /* LOST event: Abort any further processing */
 943       return (GSOCK_LOST_FLAG & flags);
 944     }
 945
 946     return (result & flags);
 947
 948   }
 949   else
 950   {
 951
 952     assert(socket != NULL);
 953     return flags & socket->m_detected;
 954
 955   }
 956 }
 957
 958 /* Flags */
 959
 960 /* GSocket_SetNonBlocking:
 961  *  Sets the socket to non-blocking mode. All IO calls will return
 962  *  immediately.
 963  */
 964 void GSocket_SetNonBlocking(GSocket *socket, int non_block)
 965 {
 966   assert(socket != NULL);
 967
 968   GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) );
 969
 970   socket->m_non_blocking = non_block;
 971 }
 972
 973 /* GSocket_SetTimeout:
 974  *  Sets the timeout for blocking calls. Time is expressed in
 975  *  milliseconds.
 976  */
 977 void GSocket_SetTimeout(GSocket *socket, unsigned long millisec)
 978 {
 979   assert(socket != NULL);
 980
 981   socket->m_timeout = millisec;
 982 }
 983
 984 /* GSocket_GetError:
 985  *  Returns the last error occured for this socket. Note that successful
 986  *  operations do not clear this back to GSOCK_NOERROR, so use it only
 987  *  after an error.
 988  */
 989 GSocketError GSocket_GetError(GSocket *socket)
 990 {
 991   assert(socket != NULL);
 992
 993   return socket->m_error;
 994 }
 995
 996 /* Callbacks */
 997
 998 /* GSOCK_INPUT:
 999  *   There is data to be read in the input buffer. If, after a read
1000  *   operation, there is still data available, the callback function will
1001  *   be called again.
1002  * GSOCK_OUTPUT:
1003  *   The socket is available for writing. That is, the next write call
1004  *   won't block. This event is generated only once, when the connection is
1005  *   first established, and then only if a call failed with GSOCK_WOULDBLOCK,
1006  *   when the output buffer empties again. This means that the app should
1007  *   assume that it can write since the first OUTPUT event, and no more
1008  *   OUTPUT events will be generated unless an error occurs.
1009  * GSOCK_CONNECTION:
1010  *   Connection succesfully established, for client sockets, or incoming
1011  *   client connection, for server sockets. Wait for this event (also watch
1012  *   out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
1013  * GSOCK_LOST:
1014  *   The connection is lost (or a connection request failed); this could
1015  *   be due to a failure, or due to the peer closing it gracefully.
1016  */
1017
1018 /* GSocket_SetCallback:
1019  *  Enables the callbacks specified by 'flags'. Note that 'flags'
1020  *  may be a combination of flags OR'ed toghether, so the same
1021  *  callback function can be made to accept different events.
1022  *  The callback function must have the following prototype:
1023  *
1024  *  void function(GSocket *socket, GSocketEvent event, char *cdata)
1025  */
1026 void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags,
1027                          GSocketCallback callback, char *cdata)
1028 {
1029   int count;
1030
1031   assert(socket != NULL);
1032
1033   for (count = 0; count < GSOCK_MAX_EVENT; count++)
1034   {
1035     if ((flags & (1 << count)) != 0)
1036     {
1037       socket->m_cbacks[count] = callback;
1038       socket->m_data[count] = cdata;
1039     }
1040   }
1041 }
1042
1043 /* GSocket_UnsetCallback:
1044  *  Disables all callbacks specified by 'flags', which may be a
1045  *  combination of flags OR'ed toghether.
1046  */
1047 void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags)
1048 {
1049   int count;
1050
1051   assert(socket != NULL);
1052
1053   for (count = 0; count < GSOCK_MAX_EVENT; count++)
1054   {
1055     if ((flags & (1 << count)) != 0)
1056     {
1057       socket->m_cbacks[count] = NULL;
1058       socket->m_data[count] = NULL;
1059     }
1060   }
1061 }
1062
1063
1064 #define CALL_CALLBACK(socket, event) {                                  \
1065   _GSocket_Disable(socket, event);                                      \
1066   if (socket->m_cbacks[event])                                          \
1067     socket->m_cbacks[event](socket, event, socket->m_data[event]);      \
1068 }
1069
1070
1071 void _GSocket_Enable(GSocket *socket, GSocketEvent event)
1072 {
1073   socket->m_detected &= ~(1 << event);
1074   _GSocket_Install_Callback(socket, event);
1075 }
1076
1077 void _GSocket_Disable(GSocket *socket, GSocketEvent event)
1078 {
1079   socket->m_detected |= (1 << event);
1080   _GSocket_Uninstall_Callback(socket, event);
1081 }
1082
1083 /* _GSocket_Input_Timeout:
1084  *  For blocking sockets, wait until data is available or
1085  *  until timeout ellapses.
1086  */
1087 GSocketError _GSocket_Input_Timeout(GSocket *socket)
1088 {
1089   struct timeval tv;
1090   fd_set readfds;
1091   int ret;
1092
1093   /* Linux select() will overwrite the struct on return */
1094   tv.tv_sec  = (socket->m_timeout / 1000);
1095   tv.tv_usec = (socket->m_timeout % 1000) * 1000;
1096
1097   if (!socket->m_non_blocking)
1098   {
1099     FD_ZERO(&readfds);
1100     FD_SET(socket->m_fd, &readfds);
1101     ret = select(socket->m_fd + 1, &readfds, NULL, NULL, &tv);
1102     if (ret == 0)
1103     {
1104       GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" ));
1105       socket->m_error = GSOCK_TIMEDOUT;
1106       return GSOCK_TIMEDOUT;
1107     }
1108     if (ret == -1)
1109     {
1110       GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" ));
1111       if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); }
1112       if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); }
1113       if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); }
1114       if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); }
1115       socket->m_error = GSOCK_TIMEDOUT;
1116       return GSOCK_TIMEDOUT;
1117     }
1118   }
1119   return GSOCK_NOERROR;
1120 }
1121
1122 /* _GSocket_Output_Timeout:
1123  *  For blocking sockets, wait until data can be sent without
1124  *  blocking or until timeout ellapses.
1125  */
1126 GSocketError _GSocket_Output_Timeout(GSocket *socket)
1127 {
1128   struct timeval tv;
1129   fd_set writefds;
1130   int ret;
1131
1132   /* Linux select() will overwrite the struct on return */
1133   tv.tv_sec  = (socket->m_timeout / 1000);
1134   tv.tv_usec = (socket->m_timeout % 1000) * 1000;
1135
1136   GSocket_Debug( ("m_non_blocking has: %d\n", (int)socket->m_non_blocking) );
1137
1138   if (!socket->m_non_blocking)
1139   {
1140     FD_ZERO(&writefds);
1141     FD_SET(socket->m_fd, &writefds);
1142     ret = select(socket->m_fd + 1, NULL, &writefds, NULL, &tv);
1143     if (ret == 0)
1144     {
1145       GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" ));
1146       socket->m_error = GSOCK_TIMEDOUT;
1147       return GSOCK_TIMEDOUT;
1148     }
1149     if (ret == -1)
1150     {
1151       GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" ));
1152       if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); }
1153       if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); }
1154       if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); }
1155       if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); }
1156       socket->m_error = GSOCK_TIMEDOUT;
1157       return GSOCK_TIMEDOUT;
1158     }
1159     if ( ! FD_ISSET(socket->m_fd, &writefds) ) {
1160         GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" ));
1161     }
1162     else {
1163         GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" ));
1164     }
1165   }
1166   else
1167   {
1168     GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" ));
1169   }
1170
1171   return GSOCK_NOERROR;
1172 }
1173
1174 int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size)
1175 {
1176   return recv(socket->m_fd, buffer, size, 0);
1177 }
1178
1179 int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size)
1180 {
1181   struct sockaddr from;
1182   SOCKLEN_T fromlen = sizeof(from);
1183   int ret;
1184   GSocketError err;
1185
1186   fromlen = sizeof(from);
1187
1188   ret = recvfrom(socket->m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen);
1189
1190   if (ret == -1)
1191     return -1;
1192
1193   /* Translate a system address into a GSocket address */
1194   if (!socket->m_peer)
1195   {
1196     socket->m_peer = GAddress_new();
1197     if (!socket->m_peer)
1198     {
1199       socket->m_error = GSOCK_MEMERR;
1200       return -1;
1201     }
1202   }
1203   err = _GAddress_translate_from(socket->m_peer, &from, fromlen);
1204   if (err != GSOCK_NOERROR)
1205   {
1206     GAddress_destroy(socket->m_peer);
1207     socket->m_peer  = NULL;
1208     socket->m_error = err;
1209     return -1;
1210   }
1211
1212   return ret;
1213 }
1214
1215 int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size)
1216 {
1217   int ret;
1218
1219   MASK_SIGNAL();
1220   ret = send(socket->m_fd, buffer, size, 0);
1221   UNMASK_SIGNAL();
1222
1223   return ret;
1224 }
1225
1226 int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size)
1227 {
1228   struct sockaddr *addr;
1229   int len, ret;
1230   GSocketError err;
1231
1232   if (!socket->m_peer)
1233   {
1234     socket->m_error = GSOCK_INVADDR;
1235     return -1;
1236   }
1237
1238   err = _GAddress_translate_to(socket->m_peer, &addr, &len);
1239   if (err != GSOCK_NOERROR)
1240   {
1241     socket->m_error = err;
1242     return -1;
1243   }
1244
1245   MASK_SIGNAL();
1246   ret = sendto(socket->m_fd, buffer, size, 0, addr, len);
1247   UNMASK_SIGNAL();
1248
1249   /* Frees memory allocated from _GAddress_translate_to */
1250   free(addr);
1251
1252   return ret;
1253 }
1254
1255 void _GSocket_Detected_Read(GSocket *socket)
1256 {
1257   char c;
1258
1259   /* If we have already detected a LOST event, then don't try
1260    * to do any further processing.
1261    */
1262   if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
1263   {
1264     socket->m_establishing = FALSE;
1265
1266     CALL_CALLBACK(socket, GSOCK_LOST);
1267     GSocket_Shutdown(socket);
1268     return;
1269   }
1270
1271   if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
1272   {
1273     CALL_CALLBACK(socket, GSOCK_INPUT);
1274   }
1275   else
1276   {
1277     if (socket->m_server && socket->m_stream)
1278     {
1279       CALL_CALLBACK(socket, GSOCK_CONNECTION);
1280     }
1281     else
1282     {
1283       CALL_CALLBACK(socket, GSOCK_LOST);
1284       GSocket_Shutdown(socket);
1285     }
1286   }
1287 }
1288
1289 void _GSocket_Detected_Write(GSocket *socket)
1290 {
1291   /* If we have already detected a LOST event, then don't try
1292    * to do any further processing.
1293    */
1294   if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
1295   {
1296     socket->m_establishing = FALSE;
1297
1298     CALL_CALLBACK(socket, GSOCK_LOST);
1299     GSocket_Shutdown(socket);
1300     return;
1301   }
1302
1303   if (socket->m_establishing && !socket->m_server)
1304   {
1305     int error;
1306     SOCKLEN_T len = sizeof(error);
1307
1308     socket->m_establishing = FALSE;
1309
1310     getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
1311
1312     if (error)
1313     {
1314       CALL_CALLBACK(socket, GSOCK_LOST);
1315       GSocket_Shutdown(socket);
1316     }
1317     else
1318     {
1319       CALL_CALLBACK(socket, GSOCK_CONNECTION);
1320       /* We have to fire this event by hand because CONNECTION (for clients)
1321        * and OUTPUT are internally the same and we just disabled CONNECTION
1322        * events with the above macro.
1323        */
1324       CALL_CALLBACK(socket, GSOCK_OUTPUT);
1325     }
1326   }
1327   else
1328   {
1329     CALL_CALLBACK(socket, GSOCK_OUTPUT);
1330   }
1331 }
1332
1333 /*
1334  * -------------------------------------------------------------------------
1335  * GAddress
1336  * -------------------------------------------------------------------------
1337  */
1338
1339 /* CHECK_ADDRESS verifies that the current address family is either
1340  * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
1341  * initalizes it to be a GSOCK_*family*. In other cases, it returns
1342  * an appropiate error code.
1343  *
1344  * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1345  */
1346 #define CHECK_ADDRESS(address, family)                              \
1347 {                                                                   \
1348   if (address->m_family == GSOCK_NOFAMILY)                          \
1349     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1350       return address->m_error;                                      \
1351   if (address->m_family != GSOCK_##family)                          \
1352   {                                                                 \
1353     address->m_error = GSOCK_INVADDR;                               \
1354     return GSOCK_INVADDR;                                           \
1355   }                                                                 \
1356 }
1357
1358 #define CHECK_ADDRESS_RETVAL(address, family, retval)               \
1359 {                                                                   \
1360   if (address->m_family == GSOCK_NOFAMILY)                          \
1361     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1362       return retval;                                                \
1363   if (address->m_family != GSOCK_##family)                          \
1364   {                                                                 \
1365     address->m_error = GSOCK_INVADDR;                               \
1366     return retval;                                                  \
1367   }                                                                 \
1368 }
1369
1370
1371 GAddress *GAddress_new(void)
1372 {
1373   GAddress *address;
1374
1375   if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1376     return NULL;
1377
1378   address->m_family  = GSOCK_NOFAMILY;
1379   address->m_addr    = NULL;
1380   address->m_len     = 0;
1381
1382   return address;
1383 }
1384
1385 GAddress *GAddress_copy(GAddress *address)
1386 {
1387   GAddress *addr2;
1388
1389   assert(address != NULL);
1390
1391   if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1392     return NULL;
1393
1394   memcpy(addr2, address, sizeof(GAddress));
1395
1396   if (address->m_addr && address->m_len > 0)
1397   {
1398     addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1399     if (addr2->m_addr == NULL)
1400     {
1401       free(addr2);
1402       return NULL;
1403     }
1404     memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1405   }
1406
1407   return addr2;
1408 }
1409
1410 void GAddress_destroy(GAddress *address)
1411 {
1412   assert(address != NULL);
1413
1414   if (address->m_addr)
1415     free(address->m_addr);
1416
1417   free(address);
1418 }
1419
1420 void GAddress_SetFamily(GAddress *address, GAddressType type)
1421 {
1422   assert(address != NULL);
1423
1424   address->m_family = type;
1425 }
1426
1427 GAddressType GAddress_GetFamily(GAddress *address)
1428 {
1429   assert(address != NULL);
1430
1431   return address->m_family;
1432 }
1433
1434 GSocketError _GAddress_translate_from(GAddress *address,
1435                                       struct sockaddr *addr, int len)
1436 {
1437   address->m_realfamily = addr->sa_family;
1438   switch (addr->sa_family)
1439   {
1440     case AF_INET:
1441       address->m_family = GSOCK_INET;
1442       break;
1443     case AF_UNIX:
1444       address->m_family = GSOCK_UNIX;
1445       break;
1446 #ifdef AF_INET6
1447     case AF_INET6:
1448       address->m_family = GSOCK_INET6;
1449       break;
1450 #endif
1451     default:
1452     {
1453       address->m_error = GSOCK_INVOP;
1454       return GSOCK_INVOP;
1455     }
1456   }
1457
1458   if (address->m_addr)
1459     free(address->m_addr);
1460
1461   address->m_len  = len;
1462   address->m_addr = (struct sockaddr *)malloc(len);
1463
1464   if (address->m_addr == NULL)
1465   {
1466     address->m_error = GSOCK_MEMERR;
1467     return GSOCK_MEMERR;
1468   }
1469   memcpy(address->m_addr, addr, len);
1470
1471   return GSOCK_NOERROR;
1472 }
1473
1474 GSocketError _GAddress_translate_to(GAddress *address,
1475                                     struct sockaddr **addr, int *len)
1476 {
1477   if (!address->m_addr)
1478   {
1479     address->m_error = GSOCK_INVADDR;
1480     return GSOCK_INVADDR;
1481   }
1482
1483   *len = address->m_len;
1484   *addr = (struct sockaddr *)malloc(address->m_len);
1485   if (*addr == NULL)
1486   {
1487     address->m_error = GSOCK_MEMERR;
1488     return GSOCK_MEMERR;
1489   }
1490
1491   memcpy(*addr, address->m_addr, address->m_len);
1492   return GSOCK_NOERROR;
1493 }
1494
1495 /*
1496  * -------------------------------------------------------------------------
1497  * Internet address family
1498  * -------------------------------------------------------------------------
1499  */
1500
1501 GSocketError _GAddress_Init_INET(GAddress *address)
1502 {
1503   address->m_len  = sizeof(struct sockaddr_in);
1504   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1505   if (address->m_addr == NULL)
1506   {
1507     address->m_error = GSOCK_MEMERR;
1508     return GSOCK_MEMERR;
1509   }
1510
1511   address->m_family = GSOCK_INET;
1512   address->m_realfamily = PF_INET;
1513   ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
1514   ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
1515
1516   return GSOCK_NOERROR;
1517 }
1518
1519 GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
1520 {
1521   struct hostent *he;
1522   struct in_addr *addr;
1523
1524   assert(address != NULL);
1525
1526   CHECK_ADDRESS(address, INET);
1527
1528   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1529
1530   /* If it is a numeric host name, convert it now */
1531 #if defined(HAVE_INET_ATON)
1532   if (inet_aton(hostname, addr) == 0)
1533   {
1534 #elif defined(HAVE_INET_ADDR)
1535   if ( (addr->s_addr = inet_addr(hostname)) == -1 )
1536   {
1537 #else
1538   /* Use gethostbyname by default */
1539   if (1)
1540   {
1541 #endif
1542     struct in_addr *array_addr;
1543
1544     /* It is a real name, we solve it */
1545     if ((he = gethostbyname(hostname)) == NULL)
1546     {
1547       /* Reset to invalid address */
1548       addr->s_addr = INADDR_NONE;
1549       address->m_error = GSOCK_NOHOST;
1550       return GSOCK_NOHOST;
1551     }
1552     array_addr = (struct in_addr *) *(he->h_addr_list);
1553     addr->s_addr = array_addr[0].s_addr;
1554   }
1555   return GSOCK_NOERROR;
1556 }
1557
1558 GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1559 {
1560   return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1561 }
1562
1563 GSocketError GAddress_INET_SetHostAddress(GAddress *address,
1564                                           unsigned long hostaddr)
1565 {
1566   struct in_addr *addr;
1567
1568   assert(address != NULL);
1569
1570   CHECK_ADDRESS(address, INET);
1571
1572   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1573   addr->s_addr = hostaddr;
1574
1575   return GSOCK_NOERROR;
1576 }
1577
1578 GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1579                                        const char *protocol)
1580 {
1581   struct servent *se;
1582   struct sockaddr_in *addr;
1583
1584   assert(address != NULL);
1585   CHECK_ADDRESS(address, INET);
1586
1587   if (!port)
1588   {
1589     address->m_error = GSOCK_INVPORT;
1590     return GSOCK_INVPORT;
1591   }
1592
1593   se = getservbyname(port, protocol);
1594   if (!se)
1595   {
1596     /* the cast to int suppresses compiler warnings about subscript having the
1597        type char */
1598     if (isdigit((int)port[0]))
1599     {
1600       int port_int;
1601
1602       port_int = atoi(port);
1603       addr = (struct sockaddr_in *)address->m_addr;
1604       addr->sin_port = htons(port_int);
1605       return GSOCK_NOERROR;
1606     }
1607
1608     address->m_error = GSOCK_INVPORT;
1609     return GSOCK_INVPORT;
1610   }
1611
1612   addr = (struct sockaddr_in *)address->m_addr;
1613   addr->sin_port = se->s_port;
1614
1615   return GSOCK_NOERROR;
1616 }
1617
1618 GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1619 {
1620   struct sockaddr_in *addr;
1621
1622   assert(address != NULL);
1623   CHECK_ADDRESS(address, INET);
1624
1625   addr = (struct sockaddr_in *)address->m_addr;
1626   addr->sin_port = htons(port);
1627
1628   return GSOCK_NOERROR;
1629 }
1630
1631 GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1632 {
1633   struct hostent *he;
1634   char *addr_buf;
1635   struct sockaddr_in *addr;
1636
1637   assert(address != NULL);
1638   CHECK_ADDRESS(address, INET);
1639
1640   addr = (struct sockaddr_in *)address->m_addr;
1641   addr_buf = (char *)&(addr->sin_addr);
1642
1643   he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
1644   if (he == NULL)
1645   {
1646     address->m_error = GSOCK_NOHOST;
1647     return GSOCK_NOHOST;
1648   }
1649
1650   strncpy(hostname, he->h_name, sbuf);
1651
1652   return GSOCK_NOERROR;
1653 }
1654
1655 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1656 {
1657   struct sockaddr_in *addr;
1658
1659   assert(address != NULL);
1660   CHECK_ADDRESS_RETVAL(address, INET, 0);
1661
1662   addr = (struct sockaddr_in *)address->m_addr;
1663
1664   return addr->sin_addr.s_addr;
1665 }
1666
1667 unsigned short GAddress_INET_GetPort(GAddress *address)
1668 {
1669   struct sockaddr_in *addr;
1670
1671   assert(address != NULL);
1672   CHECK_ADDRESS_RETVAL(address, INET, 0);
1673
1674   addr = (struct sockaddr_in *)address->m_addr;
1675   return ntohs(addr->sin_port);
1676 }
1677
1678 /*
1679  * -------------------------------------------------------------------------
1680  * Unix address family
1681  * -------------------------------------------------------------------------
1682  */
1683
1684 GSocketError _GAddress_Init_UNIX(GAddress *address)
1685 {
1686   address->m_len  = sizeof(struct sockaddr_un);
1687   address->m_addr = (struct sockaddr *)malloc(address->m_len);
1688   if (address->m_addr == NULL)
1689   {
1690     address->m_error = GSOCK_MEMERR;
1691     return GSOCK_MEMERR;
1692   }
1693
1694   address->m_family = GSOCK_UNIX;
1695   address->m_realfamily = PF_UNIX;
1696   ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
1697   ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
1698
1699   return GSOCK_NOERROR;
1700 }
1701
1702 #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))
1703
1704 GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
1705 {
1706   struct sockaddr_un *addr;
1707
1708   assert(address != NULL);
1709
1710   CHECK_ADDRESS(address, UNIX);
1711
1712   addr = ((struct sockaddr_un *)address->m_addr);
1713   strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
1714   addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';
1715
1716   return GSOCK_NOERROR;
1717 }
1718
1719 GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
1720 {
1721   struct sockaddr_un *addr;
1722
1723   assert(address != NULL);
1724   CHECK_ADDRESS(address, UNIX);
1725
1726   addr = (struct sockaddr_un *)address->m_addr;
1727
1728   strncpy(path, addr->sun_path, sbuf);
1729
1730   return GSOCK_NOERROR;
1731 }
1732
1733 #endif  /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
1734