src/unix/sockunix.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/unix/sockunix.cpp
   3 // Purpose:     wxSocketImpl implementation for Unix systems
   4 // Authors:     Guilhem Lavaux, Guillermo Rodriguez Garcia, David Elliott,
   5 //              Vadim Zeitlin
   6 // Created:     April 1997
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997 Guilhem Lavaux
   9 //              (c) 2008 Vadim Zeitlin
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #include "wx/wxprec.h"
  15
  16 #if wxUSE_SOCKETS
  17
  18 #include "wx/private/fd.h"
  19 #include "wx/private/socket.h"
  20 #include "wx/unix/private/sockunix.h"
  21
  22 #if defined(__VISAGECPP__)
  23 #define BSD_SELECT /* use Berkeley Sockets select */
  24 #endif
  25
  26 #if defined(__WATCOMC__)
  27 #include <errno.h>
  28 #include <nerrno.h>
  29 #endif
  30
  31 #include <assert.h>
  32 #include <sys/types.h>
  33 #ifdef __VISAGECPP__
  34 #include <string.h>
  35 #include <sys/time.h>
  36 #include <types.h>
  37 #include <netinet/in.h>
  38 #endif
  39 #include <netdb.h>
  40 #include <sys/ioctl.h>
  41
  42 #ifdef HAVE_SYS_SELECT_H
  43 #   include <sys/select.h>
  44 #endif
  45
  46 #ifdef __VMS__
  47 #include <socket.h>
  48 struct sockaddr_un
  49 {
  50     u_char  sun_len;        /* sockaddr len including null */
  51     u_char  sun_family;     /* AF_UNIX */
  52     char    sun_path[108];  /* path name (gag) */
  53 };
  54 #else
  55 #include <sys/socket.h>
  56 #include <sys/un.h>
  57 #endif
  58
  59 #ifndef __VISAGECPP__
  60 #include <sys/time.h>
  61 #include <netinet/in.h>
  62 #include <arpa/inet.h>
  63 #include <errno.h>
  64 #include <string.h>
  65 #include <unistd.h>
  66 #else
  67 #include <nerrno.h>
  68 #  if __IBMCPP__ < 400
  69 #include <machine/endian.h>
  70 #include <socket.h>
  71 #include <ioctl.h>
  72 #include <select.h>
  73 #include <unistd.h>
  74
  75 #define EBADF   SOCEBADF
  76
  77 #    ifdef min
  78 #    undef min
  79 #    endif
  80 #  else
  81 #include <sys/socket.h>
  82 #include <sys/ioctl.h>
  83 #include <sys/select.h>
  84
  85 #define close(a) soclose(a)
  86 #define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
  87 int _System bsdselect(int,
  88                       struct fd_set *,
  89                       struct fd_set *,
  90                       struct fd_set *,
  91                       struct timeval *);
  92 int _System soclose(int);
  93 #  endif
  94 #endif
  95 #ifdef __EMX__
  96 #include <sys/select.h>
  97 #endif
  98
  99 #include <stdio.h>
 100 #include <stdlib.h>
 101 #include <stddef.h>
 102 #include <ctype.h>
 103 #ifdef sun
 104 #  include <sys/filio.h>
 105 #endif
 106 #ifdef sgi
 107 #  include <bstring.h>
 108 #endif
 109 #ifdef _AIX
 110 #  include <strings.h>
 111 #endif
 112 #include <signal.h>
 113
 114 #ifndef WX_SOCKLEN_T
 115
 116 #ifdef VMS
 117 #  define WX_SOCKLEN_T unsigned int
 118 #else
 119 #  ifdef __GLIBC__
 120 #    if __GLIBC__ == 2
 121 #      define WX_SOCKLEN_T socklen_t
 122 #    endif
 123 #  elif defined(__WXMAC__)
 124 #    define WX_SOCKLEN_T socklen_t
 125 #  else
 126 #    define WX_SOCKLEN_T int
 127 #  endif
 128 #endif
 129
 130 #endif /* SOCKLEN_T */
 131
 132 #ifndef SOCKOPTLEN_T
 133 #define SOCKOPTLEN_T WX_SOCKLEN_T
 134 #endif
 135
 136 /* UnixWare reportedly needs this for FIONBIO definition */
 137 #ifdef __UNIXWARE__
 138 #include <sys/filio.h>
 139 #endif
 140
 141 /*
 142  * INADDR_BROADCAST is identical to INADDR_NONE which is not defined
 143  * on all systems. INADDR_BROADCAST should be fine to indicate an error.
 144  */
 145 #ifndef INADDR_NONE
 146 #define INADDR_NONE INADDR_BROADCAST
 147 #endif
 148
 149 #if defined(__VISAGECPP__) || defined(__WATCOMC__)
 150
 151     #define MASK_SIGNAL() {
 152     #define UNMASK_SIGNAL() }
 153
 154 #else
 155     extern "C" { typedef void (*wxSigHandler)(int); }
 156
 157     #define MASK_SIGNAL()                       \
 158     {                                           \
 159         wxSigHandler old_handler = signal(SIGPIPE, SIG_IGN);
 160
 161     #define UNMASK_SIGNAL()                     \
 162         signal(SIGPIPE, old_handler);           \
 163     }
 164
 165 #endif
 166
 167 /* If a SIGPIPE is issued by a socket call on a remotely closed socket,
 168    the program will "crash" unless it explicitly handles the SIGPIPE.
 169    By using MSG_NOSIGNAL, the SIGPIPE is suppressed. Later, we will
 170    use SO_NOSIGPIPE (if available), the BSD equivalent. */
 171 #ifdef MSG_NOSIGNAL
 172 #  define GSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL
 173 #else /* MSG_NOSIGNAL not available (FreeBSD including OS X) */
 174 #  define GSOCKET_MSG_NOSIGNAL 0
 175 #endif /* MSG_NOSIGNAL */
 176
 177 #if wxUSE_THREADS && (defined(HAVE_GETHOSTBYNAME) || defined(HAVE_GETSERVBYNAME))
 178 #  include "wx/thread.h"
 179 #endif
 180
 181 #if defined(HAVE_GETHOSTBYNAME)
 182 static struct hostent * deepCopyHostent(struct hostent *h,
 183                                         const struct hostent *he,
 184                                         char *buffer, int size, int *err)
 185 {
 186   /* copy old structure */
 187   memcpy(h, he, sizeof(struct hostent));
 188
 189   /* copy name */
 190   int len = strlen(h->h_name);
 191   if (len > size)
 192   {
 193     *err = ENOMEM;
 194     return NULL;
 195   }
 196   memcpy(buffer, h->h_name, len);
 197   buffer[len] = '\0';
 198   h->h_name = buffer;
 199
 200   /* track position in the buffer */
 201   int pos = len + 1;
 202
 203   /* reuse len to store address length */
 204   len = h->h_length;
 205
 206   /* ensure pointer alignment */
 207   unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
 208   if(misalign < sizeof(char *))
 209     pos += misalign;
 210
 211   /* leave space for pointer list */
 212   char **p = h->h_addr_list, **q;
 213   char **h_addr_list = (char **)(buffer + pos);
 214   while(*(p++) != 0)
 215     pos += sizeof(char *);
 216
 217   /* copy addresses and fill new pointer list */
 218   for (p = h->h_addr_list, q = h_addr_list; *p != 0; p++, q++)
 219   {
 220     if (size < pos + len)
 221     {
 222       *err = ENOMEM;
 223       return NULL;
 224     }
 225     memcpy(buffer + pos, *p, len); /* copy content */
 226     *q = buffer + pos; /* set copied pointer to copied content */
 227     pos += len;
 228   }
 229   *++q = 0; /* null terminate the pointer list */
 230   h->h_addr_list = h_addr_list; /* copy pointer to pointers */
 231
 232   /* ensure word alignment of pointers */
 233   misalign = sizeof(char *) - pos%sizeof(char *);
 234   if(misalign < sizeof(char *))
 235     pos += misalign;
 236
 237   /* leave space for pointer list */
 238   p = h->h_aliases;
 239   char **h_aliases = (char **)(buffer + pos);
 240   while(*(p++) != 0)
 241     pos += sizeof(char *);
 242
 243   /* copy aliases and fill new pointer list */
 244   for (p = h->h_aliases, q = h_aliases; *p != 0; p++, q++)
 245   {
 246     len = strlen(*p);
 247     if (size <= pos + len)
 248     {
 249       *err = ENOMEM;
 250       return NULL;
 251     }
 252     memcpy(buffer + pos, *p, len); /* copy content */
 253     buffer[pos + len] = '\0';
 254     *q = buffer + pos; /* set copied pointer to copied content */
 255     pos += len + 1;
 256   }
 257   *++q = 0; /* null terminate the pointer list */
 258   h->h_aliases = h_aliases; /* copy pointer to pointers */
 259
 260   return h;
 261 }
 262 #endif
 263
 264 #if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
 265 static wxMutex nameLock;
 266 #endif
 267 struct hostent * wxGethostbyname_r(const char *hostname, struct hostent *h,
 268                                    void *buffer, int size, int *err)
 269
 270 {
 271   struct hostent *he = NULL;
 272   *err = 0;
 273 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
 274   if (gethostbyname_r(hostname, h, (char*)buffer, size, &he, err))
 275     he = NULL;
 276 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
 277   he = gethostbyname_r(hostname, h, (char*)buffer, size, err);
 278 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
 279   if (gethostbyname_r(hostname, h, (struct hostent_data*) buffer))
 280   {
 281     he = NULL;
 282     *err = h_errno;
 283   }
 284   else
 285     he = h;
 286 #elif defined(HAVE_GETHOSTBYNAME)
 287 #if wxUSE_THREADS
 288   wxMutexLocker locker(nameLock);
 289 #endif
 290   he = gethostbyname(hostname);
 291   if (!he)
 292     *err = h_errno;
 293   else
 294     he = deepCopyHostent(h, he, (char*)buffer, size, err);
 295 #endif
 296   return he;
 297 }
 298
 299 #if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
 300 static wxMutex addrLock;
 301 #endif
 302 struct hostent * wxGethostbyaddr_r(const char *addr_buf, int buf_size,
 303                                    int proto, struct hostent *h,
 304                                    void *buffer, int size, int *err)
 305 {
 306   struct hostent *he = NULL;
 307   *err = 0;
 308 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
 309   if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
 310                       (char*)buffer, size, &he, err))
 311     he = NULL;
 312 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
 313   he = gethostbyaddr_r(addr_buf, buf_size, proto, h, (char*)buffer, size, err);
 314 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
 315   if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
 316                         (struct hostent_data*) buffer))
 317   {
 318     he = NULL;
 319     *err = h_errno;
 320   }
 321   else
 322     he = h;
 323 #elif defined(HAVE_GETHOSTBYNAME)
 324 #if wxUSE_THREADS
 325   wxMutexLocker locker(addrLock);
 326 #endif
 327   he = gethostbyaddr(addr_buf, buf_size, proto);
 328   if (!he)
 329     *err = h_errno;
 330   else
 331     he = deepCopyHostent(h, he, (char*)buffer, size, err);
 332 #endif
 333   return he;
 334 }
 335
 336 #if defined(HAVE_GETSERVBYNAME)
 337 static struct servent * deepCopyServent(struct servent *s,
 338                                         const struct servent *se,
 339                                         char *buffer, int size)
 340 {
 341   /* copy plain old structure */
 342   memcpy(s, se, sizeof(struct servent));
 343
 344   /* copy name */
 345   int len = strlen(s->s_name);
 346   if (len >= size)
 347   {
 348     return NULL;
 349   }
 350   memcpy(buffer, s->s_name, len);
 351   buffer[len] = '\0';
 352   s->s_name = buffer;
 353
 354   /* track position in the buffer */
 355   int pos = len + 1;
 356
 357   /* copy protocol */
 358   len = strlen(s->s_proto);
 359   if (pos + len >= size)
 360   {
 361     return NULL;
 362   }
 363   memcpy(buffer + pos, s->s_proto, len);
 364   buffer[pos + len] = '\0';
 365   s->s_proto = buffer + pos;
 366
 367   /* track position in the buffer */
 368   pos += len + 1;
 369
 370   /* ensure pointer alignment */
 371   unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
 372   if(misalign < sizeof(char *))
 373     pos += misalign;
 374
 375   /* leave space for pointer list */
 376   char **p = s->s_aliases, **q;
 377   char **s_aliases = (char **)(buffer + pos);
 378   while(*(p++) != 0)
 379     pos += sizeof(char *);
 380
 381   /* copy addresses and fill new pointer list */
 382   for (p = s->s_aliases, q = s_aliases; *p != 0; p++, q++){
 383     len = strlen(*p);
 384     if (size <= pos + len)
 385     {
 386       return NULL;
 387     }
 388     memcpy(buffer + pos, *p, len); /* copy content */
 389     buffer[pos + len] = '\0';
 390     *q = buffer + pos; /* set copied pointer to copied content */
 391     pos += len + 1;
 392   }
 393   *++q = 0; /* null terminate the pointer list */
 394   s->s_aliases = s_aliases; /* copy pointer to pointers */
 395   return s;
 396 }
 397 #endif
 398
 399 #if defined(HAVE_GETSERVBYNAME) && wxUSE_THREADS
 400 static wxMutex servLock;
 401 #endif
 402 struct servent *wxGetservbyname_r(const char *port, const char *protocol,
 403                                   struct servent *serv, void *buffer, int size)
 404 {
 405   struct servent *se = NULL;
 406 #if defined(HAVE_FUNC_GETSERVBYNAME_R_6)
 407   if (getservbyname_r(port, protocol, serv, (char*)buffer, size, &se))
 408     se = NULL;
 409 #elif defined(HAVE_FUNC_GETSERVBYNAME_R_5)
 410   se = getservbyname_r(port, protocol, serv, (char*)buffer, size);
 411 #elif defined(HAVE_FUNC_GETSERVBYNAME_R_4)
 412   if (getservbyname_r(port, protocol, serv, (struct servent_data*) buffer))
 413     se = NULL;
 414   else
 415     se = serv;
 416 #elif defined(HAVE_GETSERVBYNAME)
 417 #if wxUSE_THREADS
 418   wxMutexLocker locker(servLock);
 419 #endif
 420   se = getservbyname(port, protocol);
 421   if (se)
 422     se = deepCopyServent(serv, se, (char*)buffer, size);
 423 #endif
 424   return se;
 425 }
 426
 427 /* debugging helpers */
 428 #ifdef __GSOCKET_DEBUG__
 429 #  define SOCKET_DEBUG(args) printf args
 430 #else
 431 #  define SOCKET_DEBUG(args)
 432 #endif /* __GSOCKET_DEBUG__ */
 433
 434
 435 /*
 436  *  Disallow further read/write operations on this socket, close
 437  *  the fd and disable all callbacks.
 438  */
 439 void wxSocketImplUnix::Shutdown()
 440 {
 441     /* Don't allow events to fire after socket has been closed */
 442     DisableEvents();
 443
 444     wxSocketImpl::Shutdown();
 445 }
 446
 447 /*
 448  *  Waits for an incoming client connection. Returns a pointer to
 449  *  a wxSocketImplUnix object, or NULL if there was an error, in which case
 450  *  the last error field will be updated for the calling wxSocketImplUnix.
 451  *
 452  *  Error codes (set in the calling wxSocketImplUnix)
 453  *    wxSOCKET_INVSOCK    - the socket is not valid or not a server.
 454  *    wxSOCKET_TIMEDOUT   - timeout, no incoming connections.
 455  *    wxSOCKET_WOULDBLOCK - the call would block and the socket is nonblocking.
 456  *    wxSOCKET_MEMERR     - couldn't allocate memory.
 457  *    wxSOCKET_IOERR      - low-level error.
 458  */
 459 wxSocketImpl *wxSocketImplUnix::WaitConnection(wxSocketBase& wxsocket)
 460 {
 461   wxSockAddr from;
 462   WX_SOCKLEN_T fromlen = sizeof(from);
 463   wxSocketImpl *connection;
 464   wxSocketError err;
 465   int arg = 1;
 466
 467   /* If the socket has already been created, we exit immediately */
 468   if (m_fd == INVALID_SOCKET || !m_server)
 469   {
 470     m_error = wxSOCKET_INVSOCK;
 471     return NULL;
 472   }
 473
 474   /* Create a wxSocketImplUnix object for the new connection */
 475   connection = wxSocketImplUnix::Create(wxsocket);
 476
 477   if (!connection)
 478   {
 479     m_error = wxSOCKET_MEMERR;
 480     return NULL;
 481   }
 482
 483   /* Wait for a connection (with timeout) */
 484   if (Input_Timeout() == wxSOCKET_TIMEDOUT)
 485   {
 486     delete connection;
 487     /* m_error set by Input_Timeout */
 488     return NULL;
 489   }
 490
 491   connection->m_fd = accept(m_fd, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
 492
 493   /* Reenable CONNECTION events */
 494   EnableEvent(wxSOCKET_CONNECTION);
 495
 496   if (connection->m_fd == INVALID_SOCKET)
 497   {
 498     if (errno == EWOULDBLOCK)
 499       m_error = wxSOCKET_WOULDBLOCK;
 500     else
 501       m_error = wxSOCKET_IOERR;
 502
 503     delete connection;
 504     return NULL;
 505   }
 506
 507   /* Initialize all fields */
 508   connection->m_server   = false;
 509   connection->m_stream   = true;
 510
 511   /* Setup the peer address field */
 512   connection->m_peer = GAddress_new();
 513   if (!connection->m_peer)
 514   {
 515     delete connection;
 516     m_error = wxSOCKET_MEMERR;
 517     return NULL;
 518   }
 519
 520   err = _GAddress_translate_from(connection->m_peer, (sockaddr*)&from, fromlen);
 521   if (err != wxSOCKET_NOERROR)
 522   {
 523     delete connection;
 524     m_error = err;
 525     return NULL;
 526   }
 527
 528 #if defined(__EMX__) || defined(__VISAGECPP__)
 529   ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 530 #else
 531   ioctl(connection->m_fd, FIONBIO, &arg);
 532 #endif
 533   if (m_use_events)
 534     connection->Notify(true);
 535
 536   return connection;
 537 }
 538
 539 void wxSocketImplUnix::Notify(bool flag)
 540 {
 541     if (flag == m_use_events)
 542         return;
 543     m_use_events = flag;
 544     DoEnableEvents(flag);
 545 }
 546
 547 void wxSocketImplUnix::DoEnableEvents(bool flag)
 548 {
 549     wxSocketManager * const manager = wxSocketManager::Get();
 550     if ( flag )
 551     {
 552         manager->Install_Callback(this, wxSOCKET_INPUT);
 553         manager->Install_Callback(this, wxSOCKET_OUTPUT);
 554     }
 555     else // off
 556     {
 557         manager->Uninstall_Callback(this, wxSOCKET_INPUT);
 558         manager->Uninstall_Callback(this, wxSOCKET_OUTPUT);
 559     }
 560 }
 561
 562 wxSocketError wxSocketImplUnix::DoHandleConnect(int ret)
 563 {
 564   /* We only call EnableEvents() if we know we aren't shutting down the socket.
 565    * NB: EnableEvents() needs to be called whether the socket is blocking or
 566    * non-blocking, it just shouldn't be called prior to knowing there is a
 567    * connection _if_ blocking sockets are being used.
 568    * If connect above returns 0, we are already connected and need to make the
 569    * call to EnableEvents() now.
 570    */
 571   if ( m_non_blocking || (ret == 0) )
 572     EnableEvents();
 573
 574   if (ret == -1)
 575   {
 576     const int err = errno;
 577
 578     /* If connect failed with EINPROGRESS and the wxSocketImplUnix object
 579      * is in blocking mode, we select() for the specified timeout
 580      * checking for writability to see if the connection request
 581      * completes.
 582      */
 583     if ((err == EINPROGRESS) && (!m_non_blocking))
 584     {
 585       if (Output_Timeout() == wxSOCKET_TIMEDOUT)
 586       {
 587         Close();
 588         /* m_error is set in Output_Timeout */
 589         return wxSOCKET_TIMEDOUT;
 590       }
 591       else
 592       {
 593         int error;
 594         SOCKOPTLEN_T len = sizeof(error);
 595
 596         getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len);
 597         EnableEvents();
 598
 599         if (!error)
 600           return wxSOCKET_NOERROR;
 601       }
 602     }
 603
 604     /* If connect failed with EINPROGRESS and the wxSocketImplUnix object
 605      * is set to nonblocking, we set m_error to wxSOCKET_WOULDBLOCK
 606      * (and return wxSOCKET_WOULDBLOCK) but we don't close the socket;
 607      * this way if the connection completes, a wxSOCKET_CONNECTION
 608      * event will be generated, if enabled.
 609      */
 610     if ((err == EINPROGRESS) && (m_non_blocking))
 611     {
 612       m_establishing = true;
 613       m_error = wxSOCKET_WOULDBLOCK;
 614       return wxSOCKET_WOULDBLOCK;
 615     }
 616
 617     /* If connect failed with an error other than EINPROGRESS,
 618      * then the call to Connect has failed.
 619      */
 620     Close();
 621     m_error = wxSOCKET_IOERR;
 622
 623     return wxSOCKET_IOERR;
 624   }
 625
 626   return wxSOCKET_NOERROR;
 627 }
 628
 629 /* Generic IO */
 630
 631 /* Like recv(), send(), ... */
 632 int wxSocketImplUnix::Read(char *buffer, int size)
 633 {
 634   int ret;
 635
 636   if (m_fd == INVALID_SOCKET || m_server)
 637   {
 638     m_error = wxSOCKET_INVSOCK;
 639     return -1;
 640   }
 641
 642   /* Disable events during query of socket status */
 643   DisableEvent(wxSOCKET_INPUT);
 644
 645   /* If the socket is blocking, wait for data (with a timeout) */
 646   if (Input_Timeout() == wxSOCKET_TIMEDOUT) {
 647     m_error = wxSOCKET_TIMEDOUT;
 648     /* Don't return here immediately, otherwise socket events would not be
 649      * re-enabled! */
 650     ret = -1;
 651   }
 652   else
 653   {
 654     /* Read the data */
 655     if (m_stream)
 656       ret = Recv_Stream(buffer, size);
 657     else
 658       ret = Recv_Dgram(buffer, size);
 659
 660     /*
 661      * If recv returned zero for a TCP socket (if m_stream == NULL, it's an UDP
 662      * socket and empty datagrams are possible), then the connection has been
 663      * gracefully closed.
 664      *
 665      * Otherwise, recv has returned an error (-1), in which case we have lost
 666      * the socket only if errno does _not_ indicate that there may be more data
 667      * to read.
 668      */
 669     if ((ret == 0) && m_stream)
 670     {
 671       /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */
 672       if (m_use_events)
 673       {
 674         m_detected = wxSOCKET_LOST_FLAG;
 675         Detected_Read();
 676         return 0;
 677       }
 678     }
 679     else if (ret == -1)
 680     {
 681       if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
 682         m_error = wxSOCKET_WOULDBLOCK;
 683       else
 684         m_error = wxSOCKET_IOERR;
 685     }
 686   }
 687
 688   /* Enable events again now that we are done processing */
 689   EnableEvent(wxSOCKET_INPUT);
 690
 691   return ret;
 692 }
 693
 694 int wxSocketImplUnix::Write(const char *buffer, int size)
 695 {
 696   int ret;
 697
 698   SOCKET_DEBUG(( "Write #1, size %d\n", size ));
 699
 700   if (m_fd == INVALID_SOCKET || m_server)
 701   {
 702     m_error = wxSOCKET_INVSOCK;
 703     return -1;
 704   }
 705
 706   SOCKET_DEBUG(( "Write #2, size %d\n", size ));
 707
 708   /* If the socket is blocking, wait for writability (with a timeout) */
 709   if (Output_Timeout() == wxSOCKET_TIMEDOUT)
 710     return -1;
 711
 712   SOCKET_DEBUG(( "Write #3, size %d\n", size ));
 713
 714   /* Write the data */
 715   if (m_stream)
 716     ret = Send_Stream(buffer, size);
 717   else
 718     ret = Send_Dgram(buffer, size);
 719
 720   SOCKET_DEBUG(( "Write #4, size %d\n", size ));
 721
 722   if (ret == -1)
 723   {
 724     if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
 725     {
 726       m_error = wxSOCKET_WOULDBLOCK;
 727       SOCKET_DEBUG(( "Write error WOULDBLOCK\n" ));
 728     }
 729     else
 730     {
 731       m_error = wxSOCKET_IOERR;
 732       SOCKET_DEBUG(( "Write error IOERR\n" ));
 733     }
 734
 735     /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
 736      * in MSW). Once the first OUTPUT event is received, users can assume
 737      * that the socket is writable until a read operation fails. Only then
 738      * will further OUTPUT events be posted.
 739      */
 740     EnableEvent(wxSOCKET_OUTPUT);
 741
 742     return -1;
 743   }
 744
 745   SOCKET_DEBUG(( "Write #5, size %d ret %d\n", size, ret ));
 746
 747   return ret;
 748 }
 749
 750 /* Flags */
 751
 752 void wxSocketImplUnix::EnableEvent(wxSocketNotify event)
 753 {
 754     if (m_use_events)
 755     {
 756         m_detected &= ~(1 << event);
 757         wxSocketManager::Get()->Install_Callback(this, event);
 758     }
 759 }
 760
 761 void wxSocketImplUnix::DisableEvent(wxSocketNotify event)
 762 {
 763     if (m_use_events)
 764     {
 765         m_detected |= (1 << event);
 766         wxSocketManager::Get()->Uninstall_Callback(this, event);
 767     }
 768 }
 769
 770 /*
 771  *  For blocking sockets, wait until data is available or
 772  *  until timeout ellapses.
 773  */
 774 wxSocketError wxSocketImplUnix::Input_Timeout()
 775 {
 776   fd_set readfds;
 777   int ret;
 778
 779   // Linux select() will overwrite the struct on return so make a copy
 780   struct timeval tv = m_timeout;
 781
 782   if (!m_non_blocking)
 783   {
 784     wxFD_ZERO(&readfds);
 785     wxFD_SET(m_fd, &readfds);
 786     ret = select(m_fd + 1, &readfds, NULL, NULL, &tv);
 787     if (ret == 0)
 788     {
 789       SOCKET_DEBUG(( "Input_Timeout, select returned 0\n" ));
 790       m_error = wxSOCKET_TIMEDOUT;
 791       return wxSOCKET_TIMEDOUT;
 792     }
 793
 794     if (ret == -1)
 795     {
 796       SOCKET_DEBUG(( "Input_Timeout, select returned -1\n" ));
 797       if (errno == EBADF) { SOCKET_DEBUG(( "Invalid file descriptor\n" )); }
 798       if (errno == EINTR) { SOCKET_DEBUG(( "A non blocked signal was caught\n" )); }
 799       if (errno == EINVAL) { SOCKET_DEBUG(( "The highest number descriptor is negative\n" )); }
 800       if (errno == ENOMEM) { SOCKET_DEBUG(( "Not enough memory\n" )); }
 801       m_error = wxSOCKET_TIMEDOUT;
 802       return wxSOCKET_TIMEDOUT;
 803     }
 804   }
 805
 806   return wxSOCKET_NOERROR;
 807 }
 808
 809 /*
 810  *  For blocking sockets, wait until data can be sent without
 811  *  blocking or until timeout ellapses.
 812  */
 813 wxSocketError wxSocketImplUnix::Output_Timeout()
 814 {
 815   fd_set writefds;
 816   int ret;
 817
 818   // Linux select() will overwrite the struct on return so make a copy
 819   struct timeval tv = m_timeout;
 820
 821   SOCKET_DEBUG( ("m_non_blocking has: %d\n", (int)m_non_blocking) );
 822
 823   if (!m_non_blocking)
 824   {
 825     wxFD_ZERO(&writefds);
 826     wxFD_SET(m_fd, &writefds);
 827     ret = select(m_fd + 1, NULL, &writefds, NULL, &tv);
 828     if (ret == 0)
 829     {
 830       SOCKET_DEBUG(( "Output_Timeout, select returned 0\n" ));
 831       m_error = wxSOCKET_TIMEDOUT;
 832       return wxSOCKET_TIMEDOUT;
 833     }
 834
 835     if (ret == -1)
 836     {
 837       SOCKET_DEBUG(( "Output_Timeout, select returned -1\n" ));
 838       if (errno == EBADF) { SOCKET_DEBUG(( "Invalid file descriptor\n" )); }
 839       if (errno == EINTR) { SOCKET_DEBUG(( "A non blocked signal was caught\n" )); }
 840       if (errno == EINVAL) { SOCKET_DEBUG(( "The highest number descriptor is negative\n" )); }
 841       if (errno == ENOMEM) { SOCKET_DEBUG(( "Not enough memory\n" )); }
 842       m_error = wxSOCKET_TIMEDOUT;
 843       return wxSOCKET_TIMEDOUT;
 844     }
 845
 846     if ( ! wxFD_ISSET(m_fd, &writefds) )
 847     {
 848         SOCKET_DEBUG(( "Output_Timeout is buggy!\n" ));
 849     }
 850     else
 851     {
 852         SOCKET_DEBUG(( "Output_Timeout seems correct\n" ));
 853     }
 854   }
 855   else
 856   {
 857     SOCKET_DEBUG(( "Output_Timeout, didn't try select!\n" ));
 858   }
 859
 860   return wxSOCKET_NOERROR;
 861 }
 862
 863 int wxSocketImplUnix::Recv_Stream(char *buffer, int size)
 864 {
 865   int ret;
 866   do
 867   {
 868     ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
 869   }
 870   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 871
 872   return ret;
 873 }
 874
 875 int wxSocketImplUnix::Recv_Dgram(char *buffer, int size)
 876 {
 877   wxSockAddr from;
 878   WX_SOCKLEN_T fromlen = sizeof(from);
 879   int ret;
 880   wxSocketError err;
 881
 882   fromlen = sizeof(from);
 883
 884   do
 885   {
 886     ret = recvfrom(m_fd, buffer, size, 0, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
 887   }
 888   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 889
 890   if (ret == -1)
 891     return -1;
 892
 893   /* Translate a system address into a wxSocketImplUnix address */
 894   if (!m_peer)
 895   {
 896     m_peer = GAddress_new();
 897     if (!m_peer)
 898     {
 899       m_error = wxSOCKET_MEMERR;
 900       return -1;
 901     }
 902   }
 903
 904   err = _GAddress_translate_from(m_peer, (sockaddr*)&from, fromlen);
 905   if (err != wxSOCKET_NOERROR)
 906   {
 907     GAddress_destroy(m_peer);
 908     m_peer  = NULL;
 909     m_error = err;
 910     return -1;
 911   }
 912
 913   return ret;
 914 }
 915
 916 int wxSocketImplUnix::Send_Stream(const char *buffer, int size)
 917 {
 918   int ret;
 919
 920   MASK_SIGNAL();
 921
 922   do
 923   {
 924     ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL);
 925   }
 926   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 927
 928   UNMASK_SIGNAL();
 929
 930   return ret;
 931 }
 932
 933 int wxSocketImplUnix::Send_Dgram(const char *buffer, int size)
 934 {
 935   struct sockaddr *addr;
 936   int len, ret;
 937   wxSocketError err;
 938
 939   if (!m_peer)
 940   {
 941     m_error = wxSOCKET_INVADDR;
 942     return -1;
 943   }
 944
 945   err = _GAddress_translate_to(m_peer, &addr, &len);
 946   if (err != wxSOCKET_NOERROR)
 947   {
 948     m_error = err;
 949     return -1;
 950   }
 951
 952   MASK_SIGNAL();
 953
 954   do
 955   {
 956     ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);
 957   }
 958   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 959
 960   UNMASK_SIGNAL();
 961
 962   /* Frees memory allocated from _GAddress_translate_to */
 963   free(addr);
 964
 965   return ret;
 966 }
 967
 968 void wxSocketImplUnix::OnStateChange(wxSocketNotify event)
 969 {
 970     DisableEvent(event);
 971     NotifyOnStateChange(event);
 972
 973     if ( event == wxSOCKET_LOST )
 974         Shutdown();
 975 }
 976
 977 void wxSocketImplUnix::Detected_Read()
 978 {
 979   char c;
 980
 981   /* Safeguard against straggling call to Detected_Read */
 982   if (m_fd == INVALID_SOCKET)
 983   {
 984     return;
 985   }
 986
 987   /* If we have already detected a LOST event, then don't try
 988    * to do any further processing.
 989    */
 990   if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
 991   {
 992     m_establishing = false;
 993
 994     OnStateChange(wxSOCKET_LOST);
 995     return;
 996   }
 997
 998   int num =  recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
 999
1000   if (num > 0)
1001   {
1002     OnStateChange(wxSOCKET_INPUT);
1003   }
1004   else
1005   {
1006     if (m_server && m_stream)
1007     {
1008       OnStateChange(wxSOCKET_CONNECTION);
1009     }
1010     else if (num == 0)
1011     {
1012       if (m_stream)
1013       {
1014         /* graceful shutdown */
1015         OnStateChange(wxSOCKET_LOST);
1016       }
1017       else
1018       {
1019         /* Empty datagram received */
1020         OnStateChange(wxSOCKET_INPUT);
1021       }
1022     }
1023     else
1024     {
1025       /* Do not throw a lost event in cases where the socket isn't really lost */
1026       if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR))
1027       {
1028         OnStateChange(wxSOCKET_INPUT);
1029       }
1030       else
1031       {
1032         OnStateChange(wxSOCKET_LOST);
1033       }
1034     }
1035   }
1036 }
1037
1038 void wxSocketImplUnix::Detected_Write()
1039 {
1040   /* If we have already detected a LOST event, then don't try
1041    * to do any further processing.
1042    */
1043   if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
1044   {
1045     m_establishing = false;
1046
1047     OnStateChange(wxSOCKET_LOST);
1048     return;
1049   }
1050
1051   if (m_establishing && !m_server)
1052   {
1053     int error;
1054     SOCKOPTLEN_T len = sizeof(error);
1055
1056     m_establishing = false;
1057
1058     getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
1059
1060     if (error)
1061     {
1062       OnStateChange(wxSOCKET_LOST);
1063     }
1064     else
1065     {
1066       OnStateChange(wxSOCKET_CONNECTION);
1067       /* We have to fire this event by hand because CONNECTION (for clients)
1068        * and OUTPUT are internally the same and we just disabled CONNECTION
1069        * events with the above macro.
1070        */
1071       OnStateChange(wxSOCKET_OUTPUT);
1072     }
1073   }
1074   else
1075   {
1076     OnStateChange(wxSOCKET_OUTPUT);
1077   }
1078 }
1079
1080 /*
1081  * -------------------------------------------------------------------------
1082  * GAddress
1083  * -------------------------------------------------------------------------
1084  */
1085
1086 /* CHECK_ADDRESS verifies that the current address family is either
1087  * wxSOCKET_NOFAMILY or wxSOCKET_*family*, and if it is wxSOCKET_NOFAMILY, it
1088  * initalizes it to be a wxSOCKET_*family*. In other cases, it returns
1089  * an appropiate error code.
1090  *
1091  * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1092  */
1093 #define CHECK_ADDRESS(address, family)                              \
1094 {                                                                   \
1095   if (address->m_family == wxSOCKET_NOFAMILY)                          \
1096     if (_GAddress_Init_##family(address) != wxSOCKET_NOERROR)          \
1097       return address->m_error;                                      \
1098   if (address->m_family != wxSOCKET_##family)                          \
1099   {                                                                 \
1100     address->m_error = wxSOCKET_INVADDR;                               \
1101     return wxSOCKET_INVADDR;                                           \
1102   }                                                                 \
1103 }
1104
1105 #define CHECK_ADDRESS_RETVAL(address, family, retval)               \
1106 {                                                                   \
1107   if (address->m_family == wxSOCKET_NOFAMILY)                          \
1108     if (_GAddress_Init_##family(address) != wxSOCKET_NOERROR)          \
1109       return retval;                                                \
1110   if (address->m_family != wxSOCKET_##family)                          \
1111   {                                                                 \
1112     address->m_error = wxSOCKET_INVADDR;                               \
1113     return retval;                                                  \
1114   }                                                                 \
1115 }
1116
1117
1118 GAddress *GAddress_new(void)
1119 {
1120   GAddress *address;
1121
1122   if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1123     return NULL;
1124
1125   address->m_family  = wxSOCKET_NOFAMILY;
1126   address->m_addr    = NULL;
1127   address->m_len     = 0;
1128
1129   return address;
1130 }
1131
1132 GAddress *GAddress_copy(GAddress *address)
1133 {
1134   GAddress *addr2;
1135
1136   assert(address != NULL);
1137
1138   if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1139     return NULL;
1140
1141   memcpy(addr2, address, sizeof(GAddress));
1142
1143   if (address->m_addr && address->m_len > 0)
1144   {
1145     addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1146     if (addr2->m_addr == NULL)
1147     {
1148       free(addr2);
1149       return NULL;
1150     }
1151     memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1152   }
1153
1154   return addr2;
1155 }
1156
1157 void GAddress_destroy(GAddress *address)
1158 {
1159   assert(address != NULL);
1160
1161   if (address->m_addr)
1162     free(address->m_addr);
1163
1164   free(address);
1165 }
1166
1167 void GAddress_SetFamily(GAddress *address, GAddressType type)
1168 {
1169   assert(address != NULL);
1170
1171   address->m_family = type;
1172 }
1173
1174 GAddressType GAddress_GetFamily(GAddress *address)
1175 {
1176   assert(address != NULL);
1177
1178   return address->m_family;
1179 }
1180
1181 wxSocketError _GAddress_translate_from(GAddress *address,
1182                                       struct sockaddr *addr, int len)
1183 {
1184   address->m_realfamily = addr->sa_family;
1185   switch (addr->sa_family)
1186   {
1187     case AF_INET:
1188       address->m_family = wxSOCKET_INET;
1189       break;
1190     case AF_UNIX:
1191       address->m_family = wxSOCKET_UNIX;
1192       break;
1193 #if wxUSE_IPV6
1194     case AF_INET6:
1195       address->m_family = wxSOCKET_INET6;
1196       break;
1197 #endif // wxUSE_IPV6
1198     default:
1199     {
1200       address->m_error = wxSOCKET_INVOP;
1201       return wxSOCKET_INVOP;
1202     }
1203   }
1204
1205   if (address->m_addr)
1206     free(address->m_addr);
1207
1208   address->m_len  = len;
1209   address->m_addr = (struct sockaddr *)malloc(len);
1210
1211   if (address->m_addr == NULL)
1212   {
1213     address->m_error = wxSOCKET_MEMERR;
1214     return wxSOCKET_MEMERR;
1215   }
1216
1217   memcpy(address->m_addr, addr, len);
1218
1219   return wxSOCKET_NOERROR;
1220 }
1221
1222 wxSocketError _GAddress_translate_to(GAddress *address,
1223                                     struct sockaddr **addr, int *len)
1224 {
1225   if (!address->m_addr)
1226   {
1227     address->m_error = wxSOCKET_INVADDR;
1228     return wxSOCKET_INVADDR;
1229   }
1230
1231   *len = address->m_len;
1232   *addr = (struct sockaddr *)malloc(address->m_len);
1233   if (*addr == NULL)
1234   {
1235     address->m_error = wxSOCKET_MEMERR;
1236     return wxSOCKET_MEMERR;
1237   }
1238
1239   memcpy(*addr, address->m_addr, address->m_len);
1240   return wxSOCKET_NOERROR;
1241 }
1242
1243 /*
1244  * -------------------------------------------------------------------------
1245  * Internet address family
1246  * -------------------------------------------------------------------------
1247  */
1248
1249 wxSocketError _GAddress_Init_INET(GAddress *address)
1250 {
1251   address->m_len  = sizeof(struct sockaddr_in);
1252   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1253   if (address->m_addr == NULL)
1254   {
1255     address->m_error = wxSOCKET_MEMERR;
1256     return wxSOCKET_MEMERR;
1257   }
1258
1259   address->m_family = wxSOCKET_INET;
1260   address->m_realfamily = PF_INET;
1261   ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
1262   ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
1263
1264   return wxSOCKET_NOERROR;
1265 }
1266
1267 wxSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
1268 {
1269   struct hostent *he;
1270   struct in_addr *addr;
1271
1272   assert(address != NULL);
1273
1274   CHECK_ADDRESS(address, INET);
1275
1276   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1277
1278   /* If it is a numeric host name, convert it now */
1279 #if defined(HAVE_INET_ATON)
1280   if (inet_aton(hostname, addr) == 0)
1281   {
1282 #elif defined(HAVE_INET_ADDR)
1283   if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 )
1284   {
1285 #else
1286   /* Use gethostbyname by default */
1287 #ifndef __WXMAC__
1288   int val = 1;  /* VA doesn't like constants in conditional expressions */
1289   if (val)
1290 #endif
1291   {
1292 #endif
1293     struct in_addr *array_addr;
1294
1295     /* It is a real name, we solve it */
1296     struct hostent h;
1297 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
1298     struct hostent_data buffer;
1299 #else
1300     char buffer[1024];
1301 #endif
1302     int err;
1303     he = wxGethostbyname_r(hostname, &h, (void*)&buffer, sizeof(buffer), &err);
1304     if (he == NULL)
1305     {
1306       /* Reset to invalid address */
1307       addr->s_addr = INADDR_NONE;
1308       address->m_error = wxSOCKET_NOHOST;
1309       return wxSOCKET_NOHOST;
1310     }
1311
1312     array_addr = (struct in_addr *) *(he->h_addr_list);
1313     addr->s_addr = array_addr[0].s_addr;
1314   }
1315
1316   return wxSOCKET_NOERROR;
1317 }
1318
1319
1320 wxSocketError GAddress_INET_SetBroadcastAddress(GAddress *address)
1321 {
1322   return GAddress_INET_SetHostAddress(address, INADDR_BROADCAST);
1323 }
1324
1325 wxSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1326 {
1327   return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1328 }
1329
1330 wxSocketError GAddress_INET_SetHostAddress(GAddress *address,
1331                                           unsigned long hostaddr)
1332 {
1333   struct in_addr *addr;
1334
1335   assert(address != NULL);
1336
1337   CHECK_ADDRESS(address, INET);
1338
1339   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1340   addr->s_addr = htonl(hostaddr);
1341
1342   return wxSOCKET_NOERROR;
1343 }
1344
1345 wxSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1346                                        const char *protocol)
1347 {
1348   struct servent *se;
1349   struct sockaddr_in *addr;
1350
1351   assert(address != NULL);
1352   CHECK_ADDRESS(address, INET);
1353
1354   if (!port)
1355   {
1356     address->m_error = wxSOCKET_INVPORT;
1357     return wxSOCKET_INVPORT;
1358   }
1359
1360 #if defined(HAVE_FUNC_GETSERVBYNAME_R_4)
1361     struct servent_data buffer;
1362 #else
1363   char buffer[1024];
1364 #endif
1365   struct servent serv;
1366   se = wxGetservbyname_r(port, protocol, &serv,
1367                          (void*)&buffer, sizeof(buffer));
1368   if (!se)
1369   {
1370     /* the cast to int suppresses compiler warnings about subscript having the
1371        type char */
1372     if (isdigit((int)port[0]))
1373     {
1374       int port_int;
1375
1376       port_int = atoi(port);
1377       addr = (struct sockaddr_in *)address->m_addr;
1378       addr->sin_port = htons(port_int);
1379       return wxSOCKET_NOERROR;
1380     }
1381
1382     address->m_error = wxSOCKET_INVPORT;
1383     return wxSOCKET_INVPORT;
1384   }
1385
1386   addr = (struct sockaddr_in *)address->m_addr;
1387   addr->sin_port = se->s_port;
1388
1389   return wxSOCKET_NOERROR;
1390 }
1391
1392 wxSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1393 {
1394   struct sockaddr_in *addr;
1395
1396   assert(address != NULL);
1397   CHECK_ADDRESS(address, INET);
1398
1399   addr = (struct sockaddr_in *)address->m_addr;
1400   addr->sin_port = htons(port);
1401
1402   return wxSOCKET_NOERROR;
1403 }
1404
1405 wxSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1406 {
1407   struct hostent *he;
1408   char *addr_buf;
1409   struct sockaddr_in *addr;
1410
1411   assert(address != NULL);
1412   CHECK_ADDRESS(address, INET);
1413
1414   addr = (struct sockaddr_in *)address->m_addr;
1415   addr_buf = (char *)&(addr->sin_addr);
1416
1417   struct hostent temphost;
1418 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
1419   struct hostent_data buffer;
1420 #else
1421   char buffer[1024];
1422 #endif
1423   int err;
1424   he = wxGethostbyaddr_r(addr_buf, sizeof(addr->sin_addr), AF_INET, &temphost,
1425                          (void*)&buffer, sizeof(buffer), &err);
1426   if (he == NULL)
1427   {
1428     address->m_error = wxSOCKET_NOHOST;
1429     return wxSOCKET_NOHOST;
1430   }
1431
1432   strncpy(hostname, he->h_name, sbuf);
1433
1434   return wxSOCKET_NOERROR;
1435 }
1436
1437 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1438 {
1439   struct sockaddr_in *addr;
1440
1441   assert(address != NULL);
1442   CHECK_ADDRESS_RETVAL(address, INET, 0);
1443
1444   addr = (struct sockaddr_in *)address->m_addr;
1445
1446   return ntohl(addr->sin_addr.s_addr);
1447 }
1448
1449 unsigned short GAddress_INET_GetPort(GAddress *address)
1450 {
1451   struct sockaddr_in *addr;
1452
1453   assert(address != NULL);
1454   CHECK_ADDRESS_RETVAL(address, INET, 0);
1455
1456   addr = (struct sockaddr_in *)address->m_addr;
1457   return ntohs(addr->sin_port);
1458 }
1459
1460 #if wxUSE_IPV6
1461 /*
1462  * -------------------------------------------------------------------------
1463  * Internet IPv6 address family
1464  * -------------------------------------------------------------------------
1465  */
1466
1467 wxSocketError _GAddress_Init_INET6(GAddress *address)
1468 {
1469   struct in6_addr any_address = IN6ADDR_ANY_INIT;
1470   address->m_len  = sizeof(struct sockaddr_in6);
1471   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1472   if (address->m_addr == NULL)
1473   {
1474     address->m_error = wxSOCKET_MEMERR;
1475     return wxSOCKET_MEMERR;
1476   }
1477   memset(address->m_addr,0,address->m_len);
1478
1479   address->m_family = wxSOCKET_INET6;
1480   address->m_realfamily = AF_INET6;
1481   ((struct sockaddr_in6 *)address->m_addr)->sin6_family = AF_INET6;
1482   ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = any_address;
1483
1484   return wxSOCKET_NOERROR;
1485 }
1486
1487 wxSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname)
1488 {
1489   assert(address != NULL);
1490   CHECK_ADDRESS(address, INET6);
1491
1492   addrinfo hints;
1493   memset( & hints, 0, sizeof( hints ) );
1494   hints.ai_family = AF_INET6;
1495   addrinfo * info = 0;
1496   if ( getaddrinfo( hostname, "0", & hints, & info ) || ! info )
1497   {
1498     address->m_error = wxSOCKET_NOHOST;
1499     return wxSOCKET_NOHOST;
1500   }
1501
1502   memcpy( address->m_addr, info->ai_addr, info->ai_addrlen );
1503   freeaddrinfo( info );
1504   return wxSOCKET_NOERROR;
1505 }
1506
1507 wxSocketError GAddress_INET6_SetAnyAddress(GAddress *address)
1508 {
1509   assert(address != NULL);
1510
1511   CHECK_ADDRESS(address, INET6);
1512
1513   struct in6_addr addr;
1514   memset( & addr, 0, sizeof( addr ) );
1515   return GAddress_INET6_SetHostAddress(address, addr);
1516 }
1517 wxSocketError GAddress_INET6_SetHostAddress(GAddress *address,
1518                                           struct in6_addr hostaddr)
1519 {
1520   assert(address != NULL);
1521
1522   CHECK_ADDRESS(address, INET6);
1523
1524   ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = hostaddr;
1525
1526   return wxSOCKET_NOERROR;
1527 }
1528
1529 wxSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port,
1530                                        const char *protocol)
1531 {
1532   struct servent *se;
1533   struct sockaddr_in6 *addr;
1534
1535   assert(address != NULL);
1536   CHECK_ADDRESS(address, INET6);
1537
1538   if (!port)
1539   {
1540     address->m_error = wxSOCKET_INVPORT;
1541     return wxSOCKET_INVPORT;
1542   }
1543
1544   se = getservbyname(port, protocol);
1545   if (!se)
1546   {
1547     if (isdigit(port[0]))
1548     {
1549       int port_int;
1550
1551       port_int = atoi(port);
1552       addr = (struct sockaddr_in6 *)address->m_addr;
1553       addr->sin6_port = htons((u_short) port_int);
1554       return wxSOCKET_NOERROR;
1555     }
1556
1557     address->m_error = wxSOCKET_INVPORT;
1558     return wxSOCKET_INVPORT;
1559   }
1560
1561   addr = (struct sockaddr_in6 *)address->m_addr;
1562   addr->sin6_port = se->s_port;
1563
1564   return wxSOCKET_NOERROR;
1565 }
1566
1567 wxSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port)
1568 {
1569   struct sockaddr_in6 *addr;
1570
1571   assert(address != NULL);
1572   CHECK_ADDRESS(address, INET6);
1573
1574   addr = (struct sockaddr_in6 *)address->m_addr;
1575   addr->sin6_port = htons(port);
1576
1577   return wxSOCKET_NOERROR;
1578 }
1579
1580 wxSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1581 {
1582   struct hostent *he;
1583   char *addr_buf;
1584   struct sockaddr_in6 *addr;
1585
1586   assert(address != NULL);
1587   CHECK_ADDRESS(address, INET6);
1588
1589   addr = (struct sockaddr_in6 *)address->m_addr;
1590   addr_buf = (char *)&(addr->sin6_addr);
1591
1592   he = gethostbyaddr(addr_buf, sizeof(addr->sin6_addr), AF_INET6);
1593   if (he == NULL)
1594   {
1595     address->m_error = wxSOCKET_NOHOST;
1596     return wxSOCKET_NOHOST;
1597   }
1598
1599   strncpy(hostname, he->h_name, sbuf);
1600
1601   return wxSOCKET_NOERROR;
1602 }
1603
1604 wxSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr)
1605 {
1606   assert(address != NULL);
1607   assert(hostaddr != NULL);
1608   CHECK_ADDRESS_RETVAL(address, INET6, wxSOCKET_INVADDR);
1609   *hostaddr = ( (struct sockaddr_in6 *)address->m_addr )->sin6_addr;
1610   return wxSOCKET_NOERROR;
1611 }
1612
1613 unsigned short GAddress_INET6_GetPort(GAddress *address)
1614 {
1615   assert(address != NULL);
1616   CHECK_ADDRESS_RETVAL(address, INET6, 0);
1617
1618   return ntohs( ((struct sockaddr_in6 *)address->m_addr)->sin6_port );
1619 }
1620
1621 #endif // wxUSE_IPV6
1622
1623 /*
1624  * -------------------------------------------------------------------------
1625  * Unix address family
1626  * -------------------------------------------------------------------------
1627  */
1628
1629 #ifndef __VISAGECPP__
1630 wxSocketError _GAddress_Init_UNIX(GAddress *address)
1631 {
1632   address->m_len  = sizeof(struct sockaddr_un);
1633   address->m_addr = (struct sockaddr *)malloc(address->m_len);
1634   if (address->m_addr == NULL)
1635   {
1636     address->m_error = wxSOCKET_MEMERR;
1637     return wxSOCKET_MEMERR;
1638   }
1639
1640   address->m_family = wxSOCKET_UNIX;
1641   address->m_realfamily = PF_UNIX;
1642   ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
1643   ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
1644
1645   return wxSOCKET_NOERROR;
1646 }
1647
1648 #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))
1649
1650 wxSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
1651 {
1652   struct sockaddr_un *addr;
1653
1654   assert(address != NULL);
1655
1656   CHECK_ADDRESS(address, UNIX);
1657
1658   addr = ((struct sockaddr_un *)address->m_addr);
1659   strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
1660   addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';
1661
1662   return wxSOCKET_NOERROR;
1663 }
1664
1665 wxSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
1666 {
1667   struct sockaddr_un *addr;
1668
1669   assert(address != NULL);
1670   CHECK_ADDRESS(address, UNIX);
1671
1672   addr = (struct sockaddr_un *)address->m_addr;
1673
1674   strncpy(path, addr->sun_path, sbuf);
1675
1676   return wxSOCKET_NOERROR;
1677 }
1678 #endif  /* !defined(__VISAGECPP__) */
1679 #endif  /* wxUSE_SOCKETS */