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  * 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 #ifndef __EMX__
  21 /* I don't see, why this include is needed, but it seems to be necessary
  22    sometimes. For EMX, including C++ headers into plain C source breaks
  23    compilation, so don't do it there.                                   */
  24 #include "wx/defs.h"
  25 #endif
  26
  27 #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
  28
  29 #define BSD_SELECT /* use Berkley Sockets select */
  30
  31 #include <assert.h>
  32 #include <sys/types.h>
  33
  34 #ifdef __EMX__
  35 #include <sys/time.h>
  36 #include <netinet/in.h>
  37 #include <arpa/inet.h>
  38 #include <netdb.h>
  39 #include <errno.h>
  40 #include <unistd.h>
  41 #include <sys/un.h>
  42 #define HAVE_INET_ADDR
  43
  44 #else
  45
  46 #include <string.h>
  47
  48 #include <sys/time.h>
  49 #include <types.h>
  50 #include <netinet/in.h>
  51 #include <netdb.h>
  52 #include <nerrno.h>
  53
  54 #endif
  55
  56 #if defined(__VISAGECPP__) && __IBMCPP__ < 400
  57
  58 #include <machine/endian.h>
  59 #include <socket.h>
  60 #include <ioctl.h>
  61 #include <select.h>
  62 #include <unistd.h>
  63
  64 #define EBADF   SOCEBADF
  65
  66 #else
  67
  68 #include <sys/socket.h>
  69 #include <sys/ioctl.h>
  70 #include <sys/select.h>
  71
  72 #ifdef __EMX__
  73 #define soclose(a) close(a)
  74 #else
  75 #define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
  76 int _System bsdselect(int,
  77                       struct fd_set *,
  78                       struct fd_set *,
  79                       struct fd_set *,
  80                       struct timeval *);
  81 int _System soclose(int);
  82 #endif
  83 #endif
  84
  85 #include <stdio.h>
  86 #if (defined(__VISAGECPP__) && __IBMCPP__ < 400) || defined(__EMX__)
  87 #  ifdef min
  88 #  undef min
  89 #  endif
  90 #  include <stdlib.h>
  91 #endif
  92 #include <stddef.h>
  93 #include <ctype.h>
  94 #include <stdlib.h>
  95
  96 #include <signal.h>
  97
  98 #ifndef SOCKLEN_T
  99
 100 #ifdef __GLIBC__
 101 #      if __GLIBC__ == 2
 102 #         define SOCKLEN_T socklen_t
 103 #      endif
 104 #else
 105 #      define SOCKLEN_T int
 106 #endif
 107
 108 #endif
 109
 110 /*
 111  * MSW defines this, Unices don't.
 112  */
 113 #ifndef INVALID_SOCKET
 114 #define INVALID_SOCKET -1
 115 #endif
 116
 117 /*
 118  * INADDR_BROADCAST is identical to INADDR_NONE which is not defined
 119  * on all systems. INADDR_BROADCAST should be fine to indicate an error.
 120  */
 121 #ifndef INADDR_NONE
 122 #define INADDR_NONE INADDR_BROADCAST
 123 #endif
 124
 125 #define MASK_SIGNAL()                       \
 126 {                                           \
 127   void (*old_handler)(int);                 \
 128                                             \
 129   old_handler = signal(SIGPIPE, SIG_IGN);
 130
 131 #define UNMASK_SIGNAL()                     \
 132   signal(SIGPIPE, old_handler);             \
 133 }
 134
 135
 136 #ifndef __GSOCKET_STANDALONE__
 137 #  include "wx/unix/gsockunx.h"
 138 #  include "wx/gsocket.h"
 139 #else
 140 #  include "gsockunx.h"
 141 #  include "gsocket.h"
 142 #endif /* __GSOCKET_STANDALONE__ */
 143
 144 /* redefine some GUI-only functions to do nothing in console mode */
 145 #if defined(wxUSE_GUI) && !wxUSE_GUI
 146 #  define _GSocket_GUI_Init(socket) (1)
 147 #  define _GSocket_GUI_Destroy(socket)
 148 #  define _GSocket_Enable_Events(socket)
 149 #  define _GSocket_Disable_Events(socket)
 150 #  define _GSocket_Install_Callback(socket, event)
 151 #  define _GSocket_Uninstall_Callback(socket, event)
 152 #endif /* wxUSE_GUI */
 153
 154 /* debugging helpers */
 155 #ifdef __GSOCKET_DEBUG__
 156 #  define GSocket_Debug(args) printf args
 157 #else
 158 #  define GSocket_Debug(args)
 159 #endif /* __GSOCKET_DEBUG__ */
 160
 161 /* Global initialisers */
 162
 163 int GSocket_Init(void)
 164 {
 165   return 1;
 166 }
 167
 168 void GSocket_Cleanup(void)
 169 {
 170 }
 171
 172 /* Constructors / Destructors for GSocket */
 173
 174 GSocket *GSocket_new(void)
 175 {
 176   int i, success;
 177   GSocket *socket;
 178
 179   socket = (GSocket *)malloc(sizeof(GSocket));
 180
 181   if (socket == NULL)
 182     return NULL;
 183
 184   socket->m_fd                  = INVALID_SOCKET;
 185   for (i=0;i<GSOCK_MAX_EVENT;i++)
 186   {
 187     socket->m_cbacks[i]         = NULL;
 188   }
 189   socket->m_detected            = 0;
 190   socket->m_local               = NULL;
 191   socket->m_peer                = NULL;
 192   socket->m_error               = GSOCK_NOERROR;
 193   socket->m_server              = FALSE;
 194   socket->m_stream              = TRUE;
 195   socket->m_gui_dependent       = NULL;
 196   socket->m_non_blocking        = FALSE;
 197   socket->m_timeout             = 10*60*1000;
 198                                 /* 10 minutes * 60 sec * 1000 millisec */
 199   socket->m_establishing        = FALSE;
 200
 201   /* Per-socket GUI-specific initialization */
 202   success = _GSocket_GUI_Init(socket);
 203   if (!success)
 204   {
 205     free(socket);
 206     return NULL;
 207   }
 208
 209   return socket;
 210 }
 211
 212 void GSocket_close(GSocket *socket)
 213 {
 214     _GSocket_Disable_Events(socket);
 215     soclose(socket->m_fd);
 216     socket->m_fd = INVALID_SOCKET;
 217 }
 218
 219 void GSocket_destroy(GSocket *socket)
 220 {
 221   assert(socket != NULL);
 222
 223   /* Check that the socket is really shutdowned */
 224   if (socket->m_fd != INVALID_SOCKET)
 225     GSocket_Shutdown(socket);
 226
 227   /* Per-socket GUI-specific cleanup */
 228   _GSocket_GUI_Destroy(socket);
 229
 230   /* Destroy private addresses */
 231   if (socket->m_local)
 232     GAddress_destroy(socket->m_local);
 233
 234   if (socket->m_peer)
 235     GAddress_destroy(socket->m_peer);
 236
 237   /* Destroy the socket itself */
 238   free(socket);
 239 }
 240
 241 /* GSocket_Shutdown:
 242  *  Disallow further read/write operations on this socket, close
 243  *  the fd and disable all callbacks.
 244  */
 245 void GSocket_Shutdown(GSocket *socket)
 246 {
 247   int evt;
 248
 249   assert(socket != NULL);
 250
 251   /* If socket has been created, shutdown it */
 252   if (socket->m_fd != INVALID_SOCKET)
 253   {
 254     shutdown(socket->m_fd, 2);
 255     GSocket_close(socket);
 256   }
 257
 258   /* Disable GUI callbacks */
 259   for (evt = 0; evt < GSOCK_MAX_EVENT; evt++)
 260     socket->m_cbacks[evt] = NULL;
 261
 262   socket->m_detected = GSOCK_LOST_FLAG;
 263   _GSocket_Disable_Events(socket);
 264 }
 265
 266 /* Address handling */
 267
 268 /* GSocket_SetLocal:
 269  * GSocket_GetLocal:
 270  * GSocket_SetPeer:
 271  * GSocket_GetPeer:
 272  *  Set or get the local or peer address for this socket. The 'set'
 273  *  functions return GSOCK_NOERROR on success, an error code otherwise.
 274  *  The 'get' functions return a pointer to a GAddress object on success,
 275  *  or NULL otherwise, in which case they set the error code of the
 276  *  corresponding GSocket.
 277  *
 278  *  Error codes:
 279  *    GSOCK_INVSOCK - the socket is not valid.
 280  *    GSOCK_INVADDR - the address is not valid.
 281  */
 282 GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address)
 283 {
 284   assert(socket != NULL);
 285
 286   /* the socket must be initialized, or it must be a server */
 287   if ((socket->m_fd != INVALID_SOCKET && !socket->m_server))
 288   {
 289     socket->m_error = GSOCK_INVSOCK;
 290     return GSOCK_INVSOCK;
 291   }
 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_local)
 301     GAddress_destroy(socket->m_local);
 302
 303   socket->m_local = GAddress_copy(address);
 304
 305   return GSOCK_NOERROR;
 306 }
 307
 308 GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address)
 309 {
 310   assert(socket != NULL);
 311
 312   /* check address */
 313   if (address == NULL || address->m_family == GSOCK_NOFAMILY)
 314   {
 315     socket->m_error = GSOCK_INVADDR;
 316     return GSOCK_INVADDR;
 317   }
 318
 319   if (socket->m_peer)
 320     GAddress_destroy(socket->m_peer);
 321
 322   socket->m_peer = GAddress_copy(address);
 323
 324   return GSOCK_NOERROR;
 325 }
 326
 327 GAddress *GSocket_GetLocal(GSocket *socket)
 328 {
 329   GAddress *address;
 330   struct sockaddr addr;
 331   SOCKLEN_T size = sizeof(addr);
 332   GSocketError err;
 333
 334   assert(socket != NULL);
 335
 336   /* try to get it from the m_local var first */
 337   if (socket->m_local)
 338     return GAddress_copy(socket->m_local);
 339
 340   /* else, if the socket is initialized, try getsockname */
 341   if (socket->m_fd == INVALID_SOCKET)
 342   {
 343     socket->m_error = GSOCK_INVSOCK;
 344     return NULL;
 345   }
 346
 347   if (getsockname(socket->m_fd, &addr, (SOCKLEN_T *) &size) < 0)
 348   {
 349     socket->m_error = GSOCK_IOERR;
 350     return NULL;
 351   }
 352
 353   /* got a valid address from getsockname, create a GAddress object */
 354   address = GAddress_new();
 355   if (address == NULL)
 356   {
 357     socket->m_error = GSOCK_MEMERR;
 358     return NULL;
 359   }
 360
 361   err = _GAddress_translate_from(address, &addr, size);
 362   if (err != GSOCK_NOERROR)
 363   {
 364     GAddress_destroy(address);
 365     socket->m_error = err;
 366     return NULL;
 367   }
 368
 369   return address;
 370 }
 371
 372 GAddress *GSocket_GetPeer(GSocket *socket)
 373 {
 374   assert(socket != NULL);
 375
 376   /* try to get it from the m_peer var */
 377   if (socket->m_peer)
 378     return GAddress_copy(socket->m_peer);
 379
 380   return NULL;
 381 }
 382
 383 /* Server specific parts */
 384
 385 /* GSocket_SetServer:
 386  *  Sets up this socket as a server. The local address must have been
 387  *  set with GSocket_SetLocal() before GSocket_SetServer() is called.
 388  *  Returns GSOCK_NOERROR on success, one of the following otherwise:
 389  *
 390  *  Error codes:
 391  *    GSOCK_INVSOCK - the socket is in use.
 392  *    GSOCK_INVADDR - the local address has not been set.
 393  *    GSOCK_IOERR   - low-level error.
 394  */
 395 GSocketError GSocket_SetServer(GSocket *sck)
 396 {
 397   int arg = 1;
 398
 399   assert(sck != NULL);
 400
 401   /* must not be in use */
 402   if (sck->m_fd != INVALID_SOCKET)
 403   {
 404     sck->m_error = GSOCK_INVSOCK;
 405     return GSOCK_INVSOCK;
 406   }
 407
 408   /* the local addr must have been set */
 409   if (!sck->m_local)
 410   {
 411     sck->m_error = GSOCK_INVADDR;
 412     return GSOCK_INVADDR;
 413   }
 414
 415   /* Initialize all fields */
 416   sck->m_stream   = TRUE;
 417   sck->m_server   = TRUE;
 418   sck->m_oriented = TRUE;
 419
 420   /* Create the socket */
 421   sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0);
 422
 423   if (sck->m_fd == INVALID_SOCKET)
 424   {
 425     sck->m_error = GSOCK_IOERR;
 426     return GSOCK_IOERR;
 427   }
 428
 429   ioctl(sck->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 430   _GSocket_Enable_Events(sck);
 431
 432   /* Bind to the local address,
 433    * retrieve the actual address bound,
 434    * and listen up to 5 connections.
 435    */
 436   if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
 437       (getsockname(sck->m_fd,
 438                    sck->m_local->m_addr,
 439                    (SOCKLEN_T *) &sck->m_local->m_len) != 0) ||
 440       (listen(sck->m_fd, 5) != 0))
 441   {
 442     GSocket_close(sck);
 443     sck->m_error = GSOCK_IOERR;
 444     return GSOCK_IOERR;
 445   }
 446
 447   return GSOCK_NOERROR;
 448 }
 449
 450 /* GSocket_WaitConnection:
 451  *  Waits for an incoming client connection. Returns a pointer to
 452  *  a GSocket object, or NULL if there was an error, in which case
 453  *  the last error field will be updated for the calling GSocket.
 454  *
 455  *  Error codes (set in the calling GSocket)
 456  *    GSOCK_INVSOCK    - the socket is not valid or not a server.
 457  *    GSOCK_TIMEDOUT   - timeout, no incoming connections.
 458  *    GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking.
 459  *    GSOCK_MEMERR     - couldn't allocate memory.
 460  *    GSOCK_IOERR      - low-level error.
 461  */
 462 GSocket *GSocket_WaitConnection(GSocket *socket)
 463 {
 464   struct sockaddr from;
 465   SOCKLEN_T fromlen = sizeof(from);
 466   GSocket *connection;
 467   GSocketError err;
 468   int arg = 1;
 469
 470   assert(socket != NULL);
 471
 472   /* Reenable CONNECTION events */
 473   _GSocket_Enable(socket, GSOCK_CONNECTION);
 474
 475   /* If the socket has already been created, we exit immediately */
 476   if (socket->m_fd == INVALID_SOCKET || !socket->m_server)
 477   {
 478     socket->m_error = GSOCK_INVSOCK;
 479     return NULL;
 480   }
 481
 482   /* Create a GSocket object for the new connection */
 483   connection = GSocket_new();
 484
 485   if (!connection)
 486   {
 487     socket->m_error = GSOCK_MEMERR;
 488     return NULL;
 489   }
 490
 491   /* Wait for a connection (with timeout) */
 492   if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
 493   {
 494     GSocket_destroy(connection);
 495     /* socket->m_error set by _GSocket_Input_Timeout */
 496     return NULL;
 497   }
 498
 499   connection->m_fd = accept(socket->m_fd, &from, (SOCKLEN_T *) &fromlen);
 500
 501   if (connection->m_fd == INVALID_SOCKET)
 502   {
 503     if (errno == EWOULDBLOCK)
 504       socket->m_error = GSOCK_WOULDBLOCK;
 505     else
 506       socket->m_error = GSOCK_IOERR;
 507
 508     GSocket_destroy(connection);
 509     return NULL;
 510   }
 511
 512   /* Initialize all fields */
 513   connection->m_server   = FALSE;
 514   connection->m_stream   = TRUE;
 515   connection->m_oriented = TRUE;
 516
 517   /* Setup the peer address field */
 518   connection->m_peer = GAddress_new();
 519   if (!connection->m_peer)
 520   {
 521     GSocket_destroy(connection);
 522     socket->m_error = GSOCK_MEMERR;
 523     return NULL;
 524   }
 525   err = _GAddress_translate_from(connection->m_peer, &from, fromlen);
 526   if (err != GSOCK_NOERROR)
 527   {
 528     GAddress_destroy(connection->m_peer);
 529     GSocket_destroy(connection);
 530     socket->m_error = err;
 531     return NULL;
 532   }
 533
 534   ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 535   _GSocket_Enable_Events(connection);
 536
 537   return connection;
 538 }
 539
 540 /* Client specific parts */
 541
 542 /* GSocket_Connect:
 543  *  For stream (connection oriented) sockets, GSocket_Connect() tries
 544  *  to establish a client connection to a server using the peer address
 545  *  as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
 546  *  connection has been succesfully established, or one of the error
 547  *  codes listed below. Note that for nonblocking sockets, a return
 548  *  value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
 549  *  request can be completed later; you should use GSocket_Select()
 550  *  to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the
 551  *  corresponding asynchronous events.
 552  *
 553  *  For datagram (non connection oriented) sockets, GSocket_Connect()
 554  *  just sets the peer address established with GSocket_SetPeer() as
 555  *  default destination.
 556  *
 557  *  Error codes:
 558  *    GSOCK_INVSOCK    - the socket is in use or not valid.
 559  *    GSOCK_INVADDR    - the peer address has not been established.
 560  *    GSOCK_TIMEDOUT   - timeout, the connection failed.
 561  *    GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only)
 562  *    GSOCK_MEMERR     - couldn't allocate memory.
 563  *    GSOCK_IOERR      - low-level error.
 564  */
 565 GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream)
 566 {
 567   int err, ret;
 568   int arg = 1;
 569
 570   assert(sck != NULL);
 571
 572   /* Enable CONNECTION events (needed for nonblocking connections) */
 573   _GSocket_Enable(sck, GSOCK_CONNECTION);
 574
 575   if (sck->m_fd != INVALID_SOCKET)
 576   {
 577     sck->m_error = GSOCK_INVSOCK;
 578     return GSOCK_INVSOCK;
 579   }
 580
 581   if (!sck->m_peer)
 582   {
 583     sck->m_error = GSOCK_INVADDR;
 584     return GSOCK_INVADDR;
 585   }
 586
 587   /* Streamed or dgram socket? */
 588   sck->m_stream   = (stream == GSOCK_STREAMED);
 589   sck->m_oriented = TRUE;
 590   sck->m_server   = FALSE;
 591   sck->m_establishing = FALSE;
 592
 593   /* Create the socket */
 594   sck->m_fd = socket(sck->m_peer->m_realfamily,
 595                      sck->m_stream? SOCK_STREAM : SOCK_DGRAM, 0);
 596
 597   if (sck->m_fd == INVALID_SOCKET)
 598   {
 599     sck->m_error = GSOCK_IOERR;
 600     return GSOCK_IOERR;
 601   }
 602
 603   ioctl(sck->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 604   _GSocket_Enable_Events(sck);
 605
 606   /* Connect it to the peer address, with a timeout (see below) */
 607   ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len);
 608
 609   if (ret == -1)
 610   {
 611     err = errno;
 612
 613     /* If connect failed with EINPROGRESS and the GSocket object
 614      * is in blocking mode, we select() for the specified timeout
 615      * checking for writability to see if the connection request
 616      * completes.
 617      */
 618     if ((err == EINPROGRESS) && (!sck->m_non_blocking))
 619     {
 620       if (_GSocket_Output_Timeout(sck) == GSOCK_TIMEDOUT)
 621       {
 622         GSocket_close(sck);
 623         /* sck->m_error is set in _GSocket_Output_Timeout */
 624         return GSOCK_TIMEDOUT;
 625       }
 626       else
 627       {
 628         int error;
 629         SOCKLEN_T len = sizeof(error);
 630
 631         getsockopt(sck->m_fd, SOL_SOCKET, SO_ERROR, (void*) &error, &len);
 632
 633         if (!error)
 634           return GSOCK_NOERROR;
 635       }
 636     }
 637
 638     /* If connect failed with EINPROGRESS and the GSocket object
 639      * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK
 640      * (and return GSOCK_WOULDBLOCK) but we don't close the socket;
 641      * this way if the connection completes, a GSOCK_CONNECTION
 642      * event will be generated, if enabled.
 643      */
 644     if ((err == EINPROGRESS) && (sck->m_non_blocking))
 645     {
 646       sck->m_establishing = TRUE;
 647       sck->m_error = GSOCK_WOULDBLOCK;
 648       return GSOCK_WOULDBLOCK;
 649     }
 650
 651     /* If connect failed with an error other than EINPROGRESS,
 652      * then the call to GSocket_Connect has failed.
 653      */
 654     GSocket_close(sck);
 655     sck->m_error = GSOCK_IOERR;
 656     return GSOCK_IOERR;
 657   }
 658
 659   return GSOCK_NOERROR;
 660 }
 661
 662 /* Datagram sockets */
 663
 664 /* GSocket_SetNonOriented:
 665  *  Sets up this socket as a non-connection oriented (datagram) socket.
 666  *  Before using this function, the local address must have been set
 667  *  with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR
 668  *  on success, or one of the following otherwise.
 669  *
 670  *  Error codes:
 671  *    GSOCK_INVSOCK - the socket is in use.
 672  *    GSOCK_INVADDR - the local address has not been set.
 673  *    GSOCK_IOERR   - low-level error.
 674  */
 675 GSocketError GSocket_SetNonOriented(GSocket *sck)
 676 {
 677   int arg = 1;
 678
 679   assert(sck != NULL);
 680
 681   if (sck->m_fd != INVALID_SOCKET)
 682   {
 683     sck->m_error = GSOCK_INVSOCK;
 684     return GSOCK_INVSOCK;
 685   }
 686
 687   if (!sck->m_local)
 688   {
 689     sck->m_error = GSOCK_INVADDR;
 690     return GSOCK_INVADDR;
 691   }
 692
 693   /* Initialize all fields */
 694   sck->m_stream   = FALSE;
 695   sck->m_server   = FALSE;
 696   sck->m_oriented = FALSE;
 697
 698   /* Create the socket */
 699   sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0);
 700
 701   if (sck->m_fd == INVALID_SOCKET)
 702   {
 703     sck->m_error = GSOCK_IOERR;
 704     return GSOCK_IOERR;
 705   }
 706
 707   ioctl(sck->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 708   _GSocket_Enable_Events(sck);
 709
 710   /* Bind to the local address,
 711    * and retrieve the actual address bound.
 712    */
 713   if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
 714       (getsockname(sck->m_fd,
 715                    sck->m_local->m_addr,
 716                    (SOCKLEN_T *) &sck->m_local->m_len) != 0))
 717   {
 718     GSocket_close(sck);
 719     sck->m_error = GSOCK_IOERR;
 720     return GSOCK_IOERR;
 721   }
 722
 723   return GSOCK_NOERROR;
 724 }
 725
 726 /* Generic IO */
 727
 728 /* Like recv(), send(), ... */
 729 int GSocket_Read(GSocket *socket, char *buffer, int size)
 730 {
 731   int ret;
 732
 733   assert(socket != NULL);
 734
 735   /* Reenable INPUT events */
 736   _GSocket_Enable(socket, GSOCK_INPUT);
 737
 738   if (socket->m_fd == INVALID_SOCKET || socket->m_server)
 739   {
 740     socket->m_error = GSOCK_INVSOCK;
 741     return -1;
 742   }
 743
 744   /* If the socket is blocking, wait for data (with a timeout) */
 745   if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
 746     return -1;
 747
 748   /* Read the data */
 749   if (socket->m_stream)
 750     ret = _GSocket_Recv_Stream(socket, buffer, size);
 751   else
 752     ret = _GSocket_Recv_Dgram(socket, buffer, size);
 753
 754   if (ret == -1)
 755   {
 756     if (errno == EWOULDBLOCK)
 757       socket->m_error = GSOCK_WOULDBLOCK;
 758     else
 759       socket->m_error = GSOCK_IOERR;
 760   }
 761
 762   return ret;
 763 }
 764
 765 int GSocket_Write(GSocket *socket, const char *buffer, int size)
 766 {
 767   int ret;
 768
 769   assert(socket != NULL);
 770
 771   GSocket_Debug(( "GSocket_Write #1, size %d\n", size ));
 772
 773   if (socket->m_fd == INVALID_SOCKET || socket->m_server)
 774   {
 775     socket->m_error = GSOCK_INVSOCK;
 776     return -1;
 777   }
 778
 779   GSocket_Debug(( "GSocket_Write #2, size %d\n", size ));
 780
 781   /* If the socket is blocking, wait for writability (with a timeout) */
 782   if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT)
 783     return -1;
 784
 785   GSocket_Debug(( "GSocket_Write #3, size %d\n", size ));
 786
 787   /* Write the data */
 788   if (socket->m_stream)
 789     ret = _GSocket_Send_Stream(socket, buffer, size);
 790   else
 791     ret = _GSocket_Send_Dgram(socket, buffer, size);
 792
 793   GSocket_Debug(( "GSocket_Write #4, size %d\n", size ));
 794
 795   if (ret == -1)
 796   {
 797     if (errno == EWOULDBLOCK)
 798     {
 799       socket->m_error = GSOCK_WOULDBLOCK;
 800       GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));
 801     }
 802     else
 803     {
 804       socket->m_error = GSOCK_IOERR;
 805       GSocket_Debug(( "GSocket_Write error IOERR\n" ));
 806     }
 807
 808     /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
 809      * in MSW). Once the first OUTPUT event is received, users can assume
 810      * that the socket is writable until a read operation fails. Only then
 811      * will further OUTPUT events be posted.
 812      */
 813     _GSocket_Enable(socket, GSOCK_OUTPUT);
 814     return -1;
 815   }
 816
 817   GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret ));
 818
 819   return ret;
 820 }
 821
 822 /* GSocket_Select:
 823  *  Polls the socket to determine its status. This function will
 824  *  check for the events specified in the 'flags' parameter, and
 825  *  it will return a mask indicating which operations can be
 826  *  performed. This function won't block, regardless of the
 827  *  mode (blocking | nonblocking) of the socket.
 828  */
 829 GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
 830 {
 831 #if defined(wxUSE_GUI) && !wxUSE_GUI
 832
 833   GSocketEventFlags result = 0;
 834   fd_set readfds;
 835   fd_set writefds;
 836   fd_set exceptfds;
 837   struct timeval tv;
 838
 839   /* Do not use a static struct, Linux can garble it */
 840   tv.tv_sec = 0;
 841   tv.tv_usec = 0;
 842
 843   assert(socket != NULL);
 844
 845   FD_ZERO(&readfds);
 846   FD_ZERO(&writefds);
 847   FD_ZERO(&exceptfds);
 848   FD_SET(socket->m_fd, &readfds);
 849   FD_SET(socket->m_fd, &writefds);
 850   FD_SET(socket->m_fd, &exceptfds);
 851
 852   /* Check 'sticky' CONNECTION flag first */
 853   result |= (GSOCK_CONNECTION_FLAG & socket->m_detected);
 854
 855   /* If we have already detected a LOST event, then don't try
 856    * to do any further processing.
 857    */
 858   if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
 859   {
 860     socket->m_establishing = FALSE;
 861
 862     return (GSOCK_LOST_FLAG & flags);
 863   }
 864
 865   /* Try select now */
 866   if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds, &tv) <= 0)
 867   {
 868     /* What to do here? */
 869     return (result & flags);
 870   }
 871
 872   /* Check for readability */
 873   if (FD_ISSET(socket->m_fd, &readfds))
 874   {
 875     char c;
 876
 877     if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
 878     {
 879       result |= GSOCK_INPUT_FLAG;
 880     }
 881     else
 882     {
 883       if (socket->m_server && socket->m_stream)
 884       {
 885         result |= GSOCK_CONNECTION_FLAG;
 886         socket->m_detected |= GSOCK_CONNECTION_FLAG;
 887       }
 888       else
 889       {
 890         socket->m_detected = GSOCK_LOST_FLAG;
 891         socket->m_establishing = FALSE;
 892
 893         /* LOST event: Abort any further processing */
 894         return (GSOCK_LOST_FLAG & flags);
 895       }
 896     }
 897   }
 898
 899   /* Check for writability */
 900   if (FD_ISSET(socket->m_fd, &writefds))
 901   {
 902     if (socket->m_establishing && !socket->m_server)
 903     {
 904       int error;
 905       SOCKLEN_T len = sizeof(error);
 906
 907       socket->m_establishing = FALSE;
 908
 909       getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
 910
 911       if (error)
 912       {
 913         socket->m_detected = GSOCK_LOST_FLAG;
 914
 915         /* LOST event: Abort any further processing */
 916         return (GSOCK_LOST_FLAG & flags);
 917       }
 918       else
 919       {
 920         result |= GSOCK_CONNECTION_FLAG;
 921         socket->m_detected |= GSOCK_CONNECTION_FLAG;
 922       }
 923     }
 924     else
 925     {
 926       result |= GSOCK_OUTPUT_FLAG;
 927     }
 928   }
 929
 930   /* Check for exceptions and errors (is this useful in Unices?) */
 931   if (FD_ISSET(socket->m_fd, &exceptfds))
 932   {
 933     socket->m_establishing = FALSE;
 934     socket->m_detected = GSOCK_LOST_FLAG;
 935
 936     /* LOST event: Abort any further processing */
 937     return (GSOCK_LOST_FLAG & flags);
 938   }
 939
 940   return (result & flags);
 941
 942 #else
 943
 944   assert(socket != NULL);
 945   return flags & socket->m_detected;
 946
 947 #endif /* !wxUSE_GUI */
 948 }
 949
 950 /* Flags */
 951
 952 /* GSocket_SetNonBlocking:
 953  *  Sets the socket to non-blocking mode. All IO calls will return
 954  *  immediately.
 955  */
 956 void GSocket_SetNonBlocking(GSocket *socket, int non_block)
 957 {
 958   assert(socket != NULL);
 959
 960   GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) );
 961
 962   socket->m_non_blocking = non_block;
 963 }
 964
 965 /* GSocket_SetTimeout:
 966  *  Sets the timeout for blocking calls. Time is expressed in
 967  *  milliseconds.
 968  */
 969 void GSocket_SetTimeout(GSocket *socket, unsigned long millisec)
 970 {
 971   assert(socket != NULL);
 972
 973   socket->m_timeout = millisec;
 974 }
 975
 976 /* GSocket_GetError:
 977  *  Returns the last error occured for this socket. Note that successful
 978  *  operations do not clear this back to GSOCK_NOERROR, so use it only
 979  *  after an error.
 980  */
 981 GSocketError GSocket_GetError(GSocket *socket)
 982 {
 983   assert(socket != NULL);
 984
 985   return socket->m_error;
 986 }
 987
 988 /* Callbacks */
 989
 990 /* GSOCK_INPUT:
 991  *   There is data to be read in the input buffer. If, after a read
 992  *   operation, there is still data available, the callback function will
 993  *   be called again.
 994  * GSOCK_OUTPUT:
 995  *   The socket is available for writing. That is, the next write call
 996  *   won't block. This event is generated only once, when the connection is
 997  *   first established, and then only if a call failed with GSOCK_WOULDBLOCK,
 998  *   when the output buffer empties again. This means that the app should
 999  *   assume that it can write since the first OUTPUT event, and no more
1000  *   OUTPUT events will be generated unless an error occurs.
1001  * GSOCK_CONNECTION:
1002  *   Connection succesfully established, for client sockets, or incoming
1003  *   client connection, for server sockets. Wait for this event (also watch
1004  *   out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
1005  * GSOCK_LOST:
1006  *   The connection is lost (or a connection request failed); this could
1007  *   be due to a failure, or due to the peer closing it gracefully.
1008  */
1009
1010 /* GSocket_SetCallback:
1011  *  Enables the callbacks specified by 'flags'. Note that 'flags'
1012  *  may be a combination of flags OR'ed toghether, so the same
1013  *  callback function can be made to accept different events.
1014  *  The callback function must have the following prototype:
1015  *
1016  *  void function(GSocket *socket, GSocketEvent event, char *cdata)
1017  */
1018 void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags,
1019                          GSocketCallback callback, char *cdata)
1020 {
1021   int count;
1022
1023   assert(socket != NULL);
1024
1025   for (count = 0; count < GSOCK_MAX_EVENT; count++)
1026   {
1027     if ((flags & (1 << count)) != 0)
1028     {
1029       socket->m_cbacks[count] = callback;
1030       socket->m_data[count] = cdata;
1031     }
1032   }
1033 }
1034
1035 /* GSocket_UnsetCallback:
1036  *  Disables all callbacks specified by 'flags', which may be a
1037  *  combination of flags OR'ed toghether.
1038  */
1039 void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags)
1040 {
1041   int count;
1042
1043   assert(socket != NULL);
1044
1045   for (count = 0; count < GSOCK_MAX_EVENT; count++)
1046   {
1047     if ((flags & (1 << count)) != 0)
1048     {
1049       socket->m_cbacks[count] = NULL;
1050       socket->m_data[count] = NULL;
1051     }
1052   }
1053 }
1054
1055
1056 #define CALL_CALLBACK(socket, event) {                                  \
1057   _GSocket_Disable(socket, event);                                      \
1058   if (socket->m_cbacks[event])                                          \
1059     socket->m_cbacks[event](socket, event, socket->m_data[event]);      \
1060 }
1061
1062
1063 void _GSocket_Enable(GSocket *socket, GSocketEvent event)
1064 {
1065   socket->m_detected &= ~(1 << event);
1066   _GSocket_Install_Callback(socket, event);
1067 }
1068
1069 void _GSocket_Disable(GSocket *socket, GSocketEvent event)
1070 {
1071   socket->m_detected |= (1 << event);
1072   _GSocket_Uninstall_Callback(socket, event);
1073 }
1074
1075 /* _GSocket_Input_Timeout:
1076  *  For blocking sockets, wait until data is available or
1077  *  until timeout ellapses.
1078  */
1079 GSocketError _GSocket_Input_Timeout(GSocket *socket)
1080 {
1081   struct timeval tv;
1082   fd_set readfds;
1083   int ret;
1084
1085   /* Linux select() will overwrite the struct on return */
1086   tv.tv_sec  = (socket->m_timeout / 1000);
1087   tv.tv_usec = (socket->m_timeout % 1000) * 1000;
1088
1089   if (!socket->m_non_blocking)
1090   {
1091     FD_ZERO(&readfds);
1092     FD_SET(socket->m_fd, &readfds);
1093     ret = select(socket->m_fd + 1, &readfds, NULL, NULL, &tv);
1094     if (ret == 0)
1095     {
1096       GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" ));
1097       socket->m_error = GSOCK_TIMEDOUT;
1098       return GSOCK_TIMEDOUT;
1099     }
1100     if (ret == -1)
1101     {
1102       GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" ));
1103       if (errno == EBADF) GSocket_Debug(( "Invalid file descriptor\n" ));
1104       if (errno == EINTR) GSocket_Debug(( "A non blocked signal was caught\n" ));
1105       if (errno == EINVAL) GSocket_Debug(( "The highest number descriptor is negative\n" ));
1106       if (errno == ENOMEM) GSocket_Debug(( "Not enough memory\n" ));
1107       socket->m_error = GSOCK_TIMEDOUT;
1108       return GSOCK_TIMEDOUT;
1109     }
1110   }
1111   return GSOCK_NOERROR;
1112 }
1113
1114 /* _GSocket_Output_Timeout:
1115  *  For blocking sockets, wait until data can be sent without
1116  *  blocking or until timeout ellapses.
1117  */
1118 GSocketError _GSocket_Output_Timeout(GSocket *socket)
1119 {
1120   struct timeval tv;
1121   fd_set writefds;
1122   int ret;
1123
1124   /* Linux select() will overwrite the struct on return */
1125   tv.tv_sec  = (socket->m_timeout / 1000);
1126   tv.tv_usec = (socket->m_timeout % 1000) * 1000;
1127
1128   GSocket_Debug( ("m_non_blocking has: %d\n", (int)socket->m_non_blocking) );
1129
1130   if (!socket->m_non_blocking)
1131   {
1132     FD_ZERO(&writefds);
1133     FD_SET(socket->m_fd, &writefds);
1134     ret = select(socket->m_fd + 1, NULL, &writefds, NULL, &tv);
1135     if (ret == 0)
1136     {
1137       GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" ));
1138       socket->m_error = GSOCK_TIMEDOUT;
1139       return GSOCK_TIMEDOUT;
1140     }
1141     if (ret == -1)
1142     {
1143       GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" ));
1144       if (errno == EBADF) GSocket_Debug(( "Invalid file descriptor\n" ));
1145       if (errno == EINTR) GSocket_Debug(( "A non blocked signal was caught\n" ));
1146       if (errno == EINVAL) GSocket_Debug(( "The highest number descriptor is negative\n" ));
1147       if (errno == ENOMEM) GSocket_Debug(( "Not enough memory\n" ));
1148       socket->m_error = GSOCK_TIMEDOUT;
1149       return GSOCK_TIMEDOUT;
1150     }
1151     if ( ! FD_ISSET(socket->m_fd, &writefds) )
1152       GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" ));
1153     else
1154       GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" ));
1155   }
1156   else
1157   {
1158     GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" ));
1159   }
1160
1161   return GSOCK_NOERROR;
1162 }
1163
1164 int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size)
1165 {
1166   return recv(socket->m_fd, buffer, size, 0);
1167 }
1168
1169 int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size)
1170 {
1171   struct sockaddr from;
1172   SOCKLEN_T fromlen = sizeof(from);
1173   int ret;
1174   GSocketError err;
1175
1176   fromlen = sizeof(from);
1177
1178   ret = recvfrom(socket->m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen);
1179
1180   if (ret == -1)
1181     return -1;
1182
1183   /* Translate a system address into a GSocket address */
1184   if (!socket->m_peer)
1185   {
1186     socket->m_peer = GAddress_new();
1187     if (!socket->m_peer)
1188     {
1189       socket->m_error = GSOCK_MEMERR;
1190       return -1;
1191     }
1192   }
1193   err = _GAddress_translate_from(socket->m_peer, &from, fromlen);
1194   if (err != GSOCK_NOERROR)
1195   {
1196     GAddress_destroy(socket->m_peer);
1197     socket->m_peer  = NULL;
1198     socket->m_error = err;
1199     return -1;
1200   }
1201
1202   return ret;
1203 }
1204
1205 int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size)
1206 {
1207   int ret;
1208
1209 #ifdef __EMX__
1210   MASK_SIGNAL();
1211   ret = send(socket->m_fd, buffer, size, 0);
1212   UNMASK_SIGNAL();
1213 #else
1214   ret = send(socket->m_fd, (char *)buffer, size, 0);
1215 #endif
1216   return ret;
1217 }
1218
1219 int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size)
1220 {
1221   struct sockaddr *addr;
1222   int len, ret;
1223   GSocketError err;
1224
1225   if (!socket->m_peer)
1226   {
1227     socket->m_error = GSOCK_INVADDR;
1228     return -1;
1229   }
1230
1231   err = _GAddress_translate_to(socket->m_peer, &addr, &len);
1232   if (err != GSOCK_NOERROR)
1233   {
1234     socket->m_error = err;
1235     return -1;
1236   }
1237
1238 #ifdef __EMX__
1239   MASK_SIGNAL();
1240   ret = sendto(socket->m_fd, buffer, size, 0, addr, len);
1241   UNMASK_SIGNAL();
1242 #else
1243   ret = sendto(socket->m_fd, (char *)buffer, size, 0, addr, len);
1244 #endif
1245
1246   /* Frees memory allocated from _GAddress_translate_to */
1247   free(addr);
1248
1249   return ret;
1250 }
1251
1252 void _GSocket_Detected_Read(GSocket *socket)
1253 {
1254   char c;
1255
1256   /* If we have already detected a LOST event, then don't try
1257    * to do any further processing.
1258    */
1259   if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
1260   {
1261     socket->m_establishing = FALSE;
1262
1263     CALL_CALLBACK(socket, GSOCK_LOST);
1264     GSocket_Shutdown(socket);
1265     return;
1266   }
1267
1268   if (recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
1269   {
1270     CALL_CALLBACK(socket, GSOCK_INPUT);
1271   }
1272   else
1273   {
1274     if (socket->m_server && socket->m_stream)
1275     {
1276       CALL_CALLBACK(socket, GSOCK_CONNECTION);
1277     }
1278     else
1279     {
1280       CALL_CALLBACK(socket, GSOCK_LOST);
1281       GSocket_Shutdown(socket);
1282     }
1283   }
1284 }
1285
1286 void _GSocket_Detected_Write(GSocket *socket)
1287 {
1288   /* If we have already detected a LOST event, then don't try
1289    * to do any further processing.
1290    */
1291   if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
1292   {
1293     socket->m_establishing = FALSE;
1294
1295     CALL_CALLBACK(socket, GSOCK_LOST);
1296     GSocket_Shutdown(socket);
1297     return;
1298   }
1299
1300   if (socket->m_establishing && !socket->m_server)
1301   {
1302     int error;
1303     SOCKLEN_T len = sizeof(error);
1304
1305     socket->m_establishing = FALSE;
1306
1307     getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
1308
1309     if (error)
1310     {
1311       CALL_CALLBACK(socket, GSOCK_LOST);
1312       GSocket_Shutdown(socket);
1313     }
1314     else
1315     {
1316       CALL_CALLBACK(socket, GSOCK_CONNECTION);
1317       /* We have to fire this event by hand because CONNECTION (for clients)
1318        * and OUTPUT are internally the same and we just disabled CONNECTION
1319        * events with the above macro.
1320        */
1321       CALL_CALLBACK(socket, GSOCK_OUTPUT);
1322     }
1323   }
1324   else
1325   {
1326     CALL_CALLBACK(socket, GSOCK_OUTPUT);
1327   }
1328 }
1329
1330 /*
1331  * -------------------------------------------------------------------------
1332  * GAddress
1333  * -------------------------------------------------------------------------
1334  */
1335
1336 /* CHECK_ADDRESS verifies that the current address family is either
1337  * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
1338  * initalizes it to be a GSOCK_*family*. In other cases, it returns
1339  * an appropiate error code.
1340  *
1341  * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1342  */
1343 #define CHECK_ADDRESS(address, family)                              \
1344 {                                                                   \
1345   if (address->m_family == GSOCK_NOFAMILY)                          \
1346     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1347       return address->m_error;                                      \
1348   if (address->m_family != GSOCK_##family)                          \
1349   {                                                                 \
1350     address->m_error = GSOCK_INVADDR;                               \
1351     return GSOCK_INVADDR;                                           \
1352   }                                                                 \
1353 }
1354
1355 #define CHECK_ADDRESS_RETVAL(address, family, retval)               \
1356 {                                                                   \
1357   if (address->m_family == GSOCK_NOFAMILY)                          \
1358     if (_GAddress_Init_##family(address) != GSOCK_NOERROR)          \
1359       return retval;                                                \
1360   if (address->m_family != GSOCK_##family)                          \
1361   {                                                                 \
1362     address->m_error = GSOCK_INVADDR;                               \
1363     return retval;                                                  \
1364   }                                                                 \
1365 }
1366
1367
1368 GAddress *GAddress_new(void)
1369 {
1370   GAddress *address;
1371
1372   if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1373     return NULL;
1374
1375   address->m_family  = GSOCK_NOFAMILY;
1376   address->m_addr    = NULL;
1377   address->m_len     = 0;
1378
1379   return address;
1380 }
1381
1382 GAddress *GAddress_copy(GAddress *address)
1383 {
1384   GAddress *addr2;
1385
1386   assert(address != NULL);
1387
1388   if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1389     return NULL;
1390
1391   memcpy(addr2, address, sizeof(GAddress));
1392
1393   if (address->m_addr && address->m_len > 0)
1394   {
1395     addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1396     if (addr2->m_addr == NULL)
1397     {
1398       free(addr2);
1399       return NULL;
1400     }
1401     memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1402   }
1403
1404   return addr2;
1405 }
1406
1407 void GAddress_destroy(GAddress *address)
1408 {
1409   assert(address != NULL);
1410
1411   if (address->m_addr)
1412     free(address->m_addr);
1413
1414 /*    free(address); */
1415 }
1416
1417 void GAddress_SetFamily(GAddress *address, GAddressType type)
1418 {
1419   assert(address != NULL);
1420
1421   address->m_family = type;
1422 }
1423
1424 GAddressType GAddress_GetFamily(GAddress *address)
1425 {
1426   assert(address != NULL);
1427
1428   return address->m_family;
1429 }
1430
1431 GSocketError _GAddress_translate_from(GAddress *address,
1432                                       struct sockaddr *addr, int len)
1433 {
1434   address->m_realfamily = addr->sa_family;
1435   switch (addr->sa_family)
1436   {
1437     case AF_INET:
1438       address->m_family = GSOCK_INET;
1439       break;
1440     case AF_UNIX:
1441       address->m_family = GSOCK_UNIX;
1442       break;
1443 #ifdef AF_INET6
1444     case AF_INET6:
1445       address->m_family = GSOCK_INET6;
1446       break;
1447 #endif
1448     default:
1449     {
1450       address->m_error = GSOCK_INVOP;
1451       return GSOCK_INVOP;
1452     }
1453   }
1454
1455   if (address->m_addr)
1456     free(address->m_addr);
1457
1458   address->m_len  = len;
1459   address->m_addr = (struct sockaddr *)malloc(len);
1460
1461   if (address->m_addr == NULL)
1462   {
1463     address->m_error = GSOCK_MEMERR;
1464     return GSOCK_MEMERR;
1465   }
1466   memcpy(address->m_addr, addr, len);
1467
1468   return GSOCK_NOERROR;
1469 }
1470
1471 GSocketError _GAddress_translate_to(GAddress *address,
1472                                     struct sockaddr **addr, int *len)
1473 {
1474   if (!address->m_addr)
1475   {
1476     address->m_error = GSOCK_INVADDR;
1477     return GSOCK_INVADDR;
1478   }
1479
1480   *len = address->m_len;
1481   *addr = (struct sockaddr *)malloc(address->m_len);
1482   if (*addr == NULL)
1483   {
1484     address->m_error = GSOCK_MEMERR;
1485     return GSOCK_MEMERR;
1486   }
1487
1488   memcpy(*addr, address->m_addr, address->m_len);
1489   return GSOCK_NOERROR;
1490 }
1491
1492 /*
1493  * -------------------------------------------------------------------------
1494  * Internet address family
1495  * -------------------------------------------------------------------------
1496  */
1497
1498 GSocketError _GAddress_Init_INET(GAddress *address)
1499 {
1500   address->m_len  = sizeof(struct sockaddr_in);
1501   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1502   if (address->m_addr == NULL)
1503   {
1504     address->m_error = GSOCK_MEMERR;
1505     return GSOCK_MEMERR;
1506   }
1507
1508   address->m_family = GSOCK_INET;
1509   address->m_realfamily = PF_INET;
1510   ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
1511   ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
1512
1513   return GSOCK_NOERROR;
1514 }
1515
1516 GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
1517 {
1518   struct hostent *he;
1519   struct in_addr *addr;
1520
1521   assert(address != NULL);
1522
1523   CHECK_ADDRESS(address, INET);
1524
1525   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1526
1527   /* If it is a numeric host name, convert it now */
1528 #if defined(HAVE_INET_ATON)
1529   if (inet_aton(hostname, addr) == 0)
1530   {
1531 #elif defined(HAVE_INET_ADDR)
1532   addr->s_addr = inet_addr(hostname);
1533   if ( addr->s_addr == -1 )
1534   {
1535 #else
1536   /* Use gethostbyname by default */
1537   int val = 1;  //VA doesn't like constants in conditional expressions at all
1538   if (val)
1539   {
1540 #endif
1541     struct in_addr *array_addr;
1542
1543     /* It is a real name, we solve it */
1544     if ((he = gethostbyname(hostname)) == NULL)
1545     {
1546       /* Reset to invalid address */
1547       addr->s_addr = INADDR_NONE;
1548       address->m_error = GSOCK_NOHOST;
1549       return GSOCK_NOHOST;
1550     }
1551     array_addr = (struct in_addr *) *(he->h_addr_list);
1552     addr->s_addr = array_addr[0].s_addr;
1553   }
1554   return GSOCK_NOERROR;
1555 }
1556
1557 GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1558 {
1559   return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1560 }
1561
1562 GSocketError GAddress_INET_SetHostAddress(GAddress *address,
1563                                           unsigned long hostaddr)
1564 {
1565   struct in_addr *addr;
1566
1567   assert(address != NULL);
1568
1569   CHECK_ADDRESS(address, INET);
1570
1571   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1572   addr->s_addr = hostaddr;
1573
1574   return GSOCK_NOERROR;
1575 }
1576
1577 GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1578                                        const char *protocol)
1579 {
1580   struct servent *se;
1581   struct sockaddr_in *addr;
1582
1583   assert(address != NULL);
1584   CHECK_ADDRESS(address, INET);
1585
1586   if (!port)
1587   {
1588     address->m_error = GSOCK_INVPORT;
1589     return GSOCK_INVPORT;
1590   }
1591
1592   se = getservbyname(port, protocol);
1593   if (!se)
1594   {
1595     /* the cast to int suppresses compiler warnings about subscript having the
1596        type char */
1597     if (isdigit((int)port[0]))
1598     {
1599       int port_int;
1600
1601       port_int = atoi(port);
1602       addr = (struct sockaddr_in *)address->m_addr;
1603       addr->sin_port = htons(port_int);
1604       return GSOCK_NOERROR;
1605     }
1606
1607     address->m_error = GSOCK_INVPORT;
1608     return GSOCK_INVPORT;
1609   }
1610
1611   addr = (struct sockaddr_in *)address->m_addr;
1612   addr->sin_port = se->s_port;
1613
1614   return GSOCK_NOERROR;
1615 }
1616
1617 GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1618 {
1619   struct sockaddr_in *addr;
1620
1621   assert(address != NULL);
1622   CHECK_ADDRESS(address, INET);
1623
1624   addr = (struct sockaddr_in *)address->m_addr;
1625   addr->sin_port = htons(port);
1626
1627   return GSOCK_NOERROR;
1628 }
1629
1630 GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1631 {
1632   struct hostent *he;
1633   char *addr_buf;
1634   struct sockaddr_in *addr;
1635
1636   assert(address != NULL);
1637   CHECK_ADDRESS(address, INET);
1638
1639   addr = (struct sockaddr_in *)address->m_addr;
1640   addr_buf = (char *)&(addr->sin_addr);
1641
1642   he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
1643   if (he == NULL)
1644   {
1645     address->m_error = GSOCK_NOHOST;
1646     return GSOCK_NOHOST;
1647   }
1648
1649   strncpy(hostname, he->h_name, sbuf);
1650
1651   return GSOCK_NOERROR;
1652 }
1653
1654 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1655 {
1656   struct sockaddr_in *addr;
1657
1658   assert(address != NULL);
1659   CHECK_ADDRESS_RETVAL(address, INET, 0);
1660
1661   addr = (struct sockaddr_in *)address->m_addr;
1662
1663   return addr->sin_addr.s_addr;
1664 }
1665
1666 unsigned short GAddress_INET_GetPort(GAddress *address)
1667 {
1668   struct sockaddr_in *addr;
1669
1670   assert(address != NULL);
1671   CHECK_ADDRESS_RETVAL(address, INET, 0);
1672
1673   addr = (struct sockaddr_in *)address->m_addr;
1674   return ntohs(addr->sin_port);
1675 }
1676
1677 /*
1678  * -------------------------------------------------------------------------
1679  * Unix address family
1680  * -------------------------------------------------------------------------
1681  */
1682
1683 #ifdef __EMX__
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 #endif
1733   /* __EMX__ */
1734 #endif
1735   /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
1736