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 /* static */
 435 wxSocketImpl *wxSocketImpl::Create(wxSocketBase& wxsocket)
 436 {
 437     return new wxSocketImplUnix(wxsocket);
 438 }
 439
 440
 441 /*
 442  *  Disallow further read/write operations on this socket, close
 443  *  the fd and disable all callbacks.
 444  */
 445 void wxSocketImplUnix::Shutdown()
 446 {
 447     /* Don't allow events to fire after socket has been closed */
 448     DisableEvents();
 449
 450     wxSocketImpl::Shutdown();
 451 }
 452
 453 /*
 454  *  Waits for an incoming client connection. Returns a pointer to
 455  *  a wxSocketImplUnix object, or NULL if there was an error, in which case
 456  *  the last error field will be updated for the calling wxSocketImplUnix.
 457  *
 458  *  Error codes (set in the calling wxSocketImplUnix)
 459  *    wxSOCKET_INVSOCK    - the socket is not valid or not a server.
 460  *    wxSOCKET_TIMEDOUT   - timeout, no incoming connections.
 461  *    wxSOCKET_WOULDBLOCK - the call would block and the socket is nonblocking.
 462  *    wxSOCKET_MEMERR     - couldn't allocate memory.
 463  *    wxSOCKET_IOERR      - low-level error.
 464  */
 465 wxSocketImpl *wxSocketImplUnix::WaitConnection(wxSocketBase& wxsocket)
 466 {
 467   wxSockAddr from;
 468   WX_SOCKLEN_T fromlen = sizeof(from);
 469   wxSocketImpl *connection;
 470   wxSocketError err;
 471   int arg = 1;
 472
 473   /* If the socket has already been created, we exit immediately */
 474   if (m_fd == INVALID_SOCKET || !m_server)
 475   {
 476     m_error = wxSOCKET_INVSOCK;
 477     return NULL;
 478   }
 479
 480   /* Create a wxSocketImplUnix object for the new connection */
 481   connection = wxSocketImplUnix::Create(wxsocket);
 482
 483   if (!connection)
 484   {
 485     m_error = wxSOCKET_MEMERR;
 486     return NULL;
 487   }
 488
 489   /* Wait for a connection (with timeout) */
 490   if (Input_Timeout() == wxSOCKET_TIMEDOUT)
 491   {
 492     delete connection;
 493     /* m_error set by Input_Timeout */
 494     return NULL;
 495   }
 496
 497   connection->m_fd = accept(m_fd, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
 498
 499   /* Reenable CONNECTION events */
 500   EnableEvent(wxSOCKET_CONNECTION);
 501
 502   if (connection->m_fd == INVALID_SOCKET)
 503   {
 504     if (errno == EWOULDBLOCK)
 505       m_error = wxSOCKET_WOULDBLOCK;
 506     else
 507       m_error = wxSOCKET_IOERR;
 508
 509     delete connection;
 510     return NULL;
 511   }
 512
 513   /* Initialize all fields */
 514   connection->m_server   = false;
 515   connection->m_stream   = true;
 516
 517   /* Setup the peer address field */
 518   connection->m_peer = GAddress_new();
 519   if (!connection->m_peer)
 520   {
 521     delete connection;
 522     m_error = wxSOCKET_MEMERR;
 523     return NULL;
 524   }
 525
 526   err = _GAddress_translate_from(connection->m_peer, (sockaddr*)&from, fromlen);
 527   if (err != wxSOCKET_NOERROR)
 528   {
 529     delete connection;
 530     m_error = err;
 531     return NULL;
 532   }
 533
 534 #if defined(__EMX__) || defined(__VISAGECPP__)
 535   ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
 536 #else
 537   ioctl(connection->m_fd, FIONBIO, &arg);
 538 #endif
 539   if (m_use_events)
 540     connection->Notify(true);
 541
 542   return connection;
 543 }
 544
 545 void wxSocketImplUnix::Notify(bool flag)
 546 {
 547     if (flag == m_use_events)
 548         return;
 549     m_use_events = flag;
 550     DoEnableEvents(flag);
 551 }
 552
 553 void wxSocketImplUnix::DoEnableEvents(bool flag)
 554 {
 555     wxSocketManager * const manager = wxSocketManager::Get();
 556     if ( flag )
 557     {
 558         manager->Install_Callback(this, wxSOCKET_INPUT);
 559         manager->Install_Callback(this, wxSOCKET_OUTPUT);
 560     }
 561     else // off
 562     {
 563         manager->Uninstall_Callback(this, wxSOCKET_INPUT);
 564         manager->Uninstall_Callback(this, wxSOCKET_OUTPUT);
 565     }
 566 }
 567
 568 wxSocketError wxSocketImplUnix::DoHandleConnect(int ret)
 569 {
 570   /* We only call EnableEvents() if we know we aren't shutting down the socket.
 571    * NB: EnableEvents() needs to be called whether the socket is blocking or
 572    * non-blocking, it just shouldn't be called prior to knowing there is a
 573    * connection _if_ blocking sockets are being used.
 574    * If connect above returns 0, we are already connected and need to make the
 575    * call to EnableEvents() now.
 576    */
 577   if ( m_non_blocking || (ret == 0) )
 578     EnableEvents();
 579
 580   if (ret == -1)
 581   {
 582     const int err = errno;
 583
 584     /* If connect failed with EINPROGRESS and the wxSocketImplUnix object
 585      * is in blocking mode, we select() for the specified timeout
 586      * checking for writability to see if the connection request
 587      * completes.
 588      */
 589     if ((err == EINPROGRESS) && (!m_non_blocking))
 590     {
 591       if (Output_Timeout() == wxSOCKET_TIMEDOUT)
 592       {
 593         Close();
 594         /* m_error is set in Output_Timeout */
 595         return wxSOCKET_TIMEDOUT;
 596       }
 597       else
 598       {
 599         int error;
 600         SOCKOPTLEN_T len = sizeof(error);
 601
 602         getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len);
 603         EnableEvents();
 604
 605         if (!error)
 606           return wxSOCKET_NOERROR;
 607       }
 608     }
 609
 610     /* If connect failed with EINPROGRESS and the wxSocketImplUnix object
 611      * is set to nonblocking, we set m_error to wxSOCKET_WOULDBLOCK
 612      * (and return wxSOCKET_WOULDBLOCK) but we don't close the socket;
 613      * this way if the connection completes, a wxSOCKET_CONNECTION
 614      * event will be generated, if enabled.
 615      */
 616     if ((err == EINPROGRESS) && (m_non_blocking))
 617     {
 618       m_establishing = true;
 619       m_error = wxSOCKET_WOULDBLOCK;
 620       return wxSOCKET_WOULDBLOCK;
 621     }
 622
 623     /* If connect failed with an error other than EINPROGRESS,
 624      * then the call to Connect has failed.
 625      */
 626     Close();
 627     m_error = wxSOCKET_IOERR;
 628
 629     return wxSOCKET_IOERR;
 630   }
 631
 632   return wxSOCKET_NOERROR;
 633 }
 634
 635 /* Generic IO */
 636
 637 /* Like recv(), send(), ... */
 638 int wxSocketImplUnix::Read(char *buffer, int size)
 639 {
 640   int ret;
 641
 642   if (m_fd == INVALID_SOCKET || m_server)
 643   {
 644     m_error = wxSOCKET_INVSOCK;
 645     return -1;
 646   }
 647
 648   /* Disable events during query of socket status */
 649   DisableEvent(wxSOCKET_INPUT);
 650
 651   /* If the socket is blocking, wait for data (with a timeout) */
 652   if (Input_Timeout() == wxSOCKET_TIMEDOUT) {
 653     m_error = wxSOCKET_TIMEDOUT;
 654     /* Don't return here immediately, otherwise socket events would not be
 655      * re-enabled! */
 656     ret = -1;
 657   }
 658   else
 659   {
 660     /* Read the data */
 661     if (m_stream)
 662       ret = Recv_Stream(buffer, size);
 663     else
 664       ret = Recv_Dgram(buffer, size);
 665
 666     /*
 667      * If recv returned zero for a TCP socket (if m_stream == NULL, it's an UDP
 668      * socket and empty datagrams are possible), then the connection has been
 669      * gracefully closed.
 670      *
 671      * Otherwise, recv has returned an error (-1), in which case we have lost
 672      * the socket only if errno does _not_ indicate that there may be more data
 673      * to read.
 674      */
 675     if ((ret == 0) && m_stream)
 676     {
 677       /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */
 678       if (m_use_events)
 679       {
 680         m_detected = wxSOCKET_LOST_FLAG;
 681         OnReadWaiting();
 682         return 0;
 683       }
 684     }
 685     else if (ret == -1)
 686     {
 687       if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
 688         m_error = wxSOCKET_WOULDBLOCK;
 689       else
 690         m_error = wxSOCKET_IOERR;
 691     }
 692   }
 693
 694   /* Enable events again now that we are done processing */
 695   EnableEvent(wxSOCKET_INPUT);
 696
 697   return ret;
 698 }
 699
 700 int wxSocketImplUnix::Write(const char *buffer, int size)
 701 {
 702   int ret;
 703
 704   SOCKET_DEBUG(( "Write #1, size %d\n", size ));
 705
 706   if (m_fd == INVALID_SOCKET || m_server)
 707   {
 708     m_error = wxSOCKET_INVSOCK;
 709     return -1;
 710   }
 711
 712   SOCKET_DEBUG(( "Write #2, size %d\n", size ));
 713
 714   /* If the socket is blocking, wait for writability (with a timeout) */
 715   if (Output_Timeout() == wxSOCKET_TIMEDOUT)
 716     return -1;
 717
 718   SOCKET_DEBUG(( "Write #3, size %d\n", size ));
 719
 720   /* Write the data */
 721   if (m_stream)
 722     ret = Send_Stream(buffer, size);
 723   else
 724     ret = Send_Dgram(buffer, size);
 725
 726   SOCKET_DEBUG(( "Write #4, size %d\n", size ));
 727
 728   if (ret == -1)
 729   {
 730     if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
 731     {
 732       m_error = wxSOCKET_WOULDBLOCK;
 733       SOCKET_DEBUG(( "Write error WOULDBLOCK\n" ));
 734     }
 735     else
 736     {
 737       m_error = wxSOCKET_IOERR;
 738       SOCKET_DEBUG(( "Write error IOERR\n" ));
 739     }
 740
 741     /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
 742      * in MSW). Once the first OUTPUT event is received, users can assume
 743      * that the socket is writable until a read operation fails. Only then
 744      * will further OUTPUT events be posted.
 745      */
 746     EnableEvent(wxSOCKET_OUTPUT);
 747
 748     return -1;
 749   }
 750
 751   SOCKET_DEBUG(( "Write #5, size %d ret %d\n", size, ret ));
 752
 753   return ret;
 754 }
 755
 756 /* Flags */
 757
 758 void wxSocketImplUnix::EnableEvent(wxSocketNotify event)
 759 {
 760     if (m_use_events)
 761     {
 762         m_detected &= ~(1 << event);
 763         wxSocketManager::Get()->Install_Callback(this, event);
 764     }
 765 }
 766
 767 void wxSocketImplUnix::DisableEvent(wxSocketNotify event)
 768 {
 769     if (m_use_events)
 770     {
 771         m_detected |= (1 << event);
 772         wxSocketManager::Get()->Uninstall_Callback(this, event);
 773     }
 774 }
 775
 776 /*
 777  *  For blocking sockets, wait until data is available or
 778  *  until timeout ellapses.
 779  */
 780 wxSocketError wxSocketImplUnix::Input_Timeout()
 781 {
 782   fd_set readfds;
 783   int ret;
 784
 785   // Linux select() will overwrite the struct on return so make a copy
 786   struct timeval tv = m_timeout;
 787
 788   if (!m_non_blocking)
 789   {
 790     wxFD_ZERO(&readfds);
 791     wxFD_SET(m_fd, &readfds);
 792     ret = select(m_fd + 1, &readfds, NULL, NULL, &tv);
 793     if (ret == 0)
 794     {
 795       SOCKET_DEBUG(( "Input_Timeout, select returned 0\n" ));
 796       m_error = wxSOCKET_TIMEDOUT;
 797       return wxSOCKET_TIMEDOUT;
 798     }
 799
 800     if (ret == -1)
 801     {
 802       SOCKET_DEBUG(( "Input_Timeout, select returned -1\n" ));
 803       if (errno == EBADF) { SOCKET_DEBUG(( "Invalid file descriptor\n" )); }
 804       if (errno == EINTR) { SOCKET_DEBUG(( "A non blocked signal was caught\n" )); }
 805       if (errno == EINVAL) { SOCKET_DEBUG(( "The highest number descriptor is negative\n" )); }
 806       if (errno == ENOMEM) { SOCKET_DEBUG(( "Not enough memory\n" )); }
 807       m_error = wxSOCKET_TIMEDOUT;
 808       return wxSOCKET_TIMEDOUT;
 809     }
 810   }
 811
 812   return wxSOCKET_NOERROR;
 813 }
 814
 815 /*
 816  *  For blocking sockets, wait until data can be sent without
 817  *  blocking or until timeout ellapses.
 818  */
 819 wxSocketError wxSocketImplUnix::Output_Timeout()
 820 {
 821   fd_set writefds;
 822   int ret;
 823
 824   // Linux select() will overwrite the struct on return so make a copy
 825   struct timeval tv = m_timeout;
 826
 827   SOCKET_DEBUG( ("m_non_blocking has: %d\n", (int)m_non_blocking) );
 828
 829   if (!m_non_blocking)
 830   {
 831     wxFD_ZERO(&writefds);
 832     wxFD_SET(m_fd, &writefds);
 833     ret = select(m_fd + 1, NULL, &writefds, NULL, &tv);
 834     if (ret == 0)
 835     {
 836       SOCKET_DEBUG(( "Output_Timeout, select returned 0\n" ));
 837       m_error = wxSOCKET_TIMEDOUT;
 838       return wxSOCKET_TIMEDOUT;
 839     }
 840
 841     if (ret == -1)
 842     {
 843       SOCKET_DEBUG(( "Output_Timeout, select returned -1\n" ));
 844       if (errno == EBADF) { SOCKET_DEBUG(( "Invalid file descriptor\n" )); }
 845       if (errno == EINTR) { SOCKET_DEBUG(( "A non blocked signal was caught\n" )); }
 846       if (errno == EINVAL) { SOCKET_DEBUG(( "The highest number descriptor is negative\n" )); }
 847       if (errno == ENOMEM) { SOCKET_DEBUG(( "Not enough memory\n" )); }
 848       m_error = wxSOCKET_TIMEDOUT;
 849       return wxSOCKET_TIMEDOUT;
 850     }
 851
 852     if ( ! wxFD_ISSET(m_fd, &writefds) )
 853     {
 854         SOCKET_DEBUG(( "Output_Timeout is buggy!\n" ));
 855     }
 856     else
 857     {
 858         SOCKET_DEBUG(( "Output_Timeout seems correct\n" ));
 859     }
 860   }
 861   else
 862   {
 863     SOCKET_DEBUG(( "Output_Timeout, didn't try select!\n" ));
 864   }
 865
 866   return wxSOCKET_NOERROR;
 867 }
 868
 869 int wxSocketImplUnix::Recv_Stream(char *buffer, int size)
 870 {
 871   int ret;
 872   do
 873   {
 874     ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
 875   }
 876   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 877
 878   return ret;
 879 }
 880
 881 int wxSocketImplUnix::Recv_Dgram(char *buffer, int size)
 882 {
 883   wxSockAddr from;
 884   WX_SOCKLEN_T fromlen = sizeof(from);
 885   int ret;
 886   wxSocketError err;
 887
 888   fromlen = sizeof(from);
 889
 890   do
 891   {
 892     ret = recvfrom(m_fd, buffer, size, 0, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
 893   }
 894   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 895
 896   if (ret == -1)
 897     return -1;
 898
 899   /* Translate a system address into a wxSocketImplUnix address */
 900   if (!m_peer)
 901   {
 902     m_peer = GAddress_new();
 903     if (!m_peer)
 904     {
 905       m_error = wxSOCKET_MEMERR;
 906       return -1;
 907     }
 908   }
 909
 910   err = _GAddress_translate_from(m_peer, (sockaddr*)&from, fromlen);
 911   if (err != wxSOCKET_NOERROR)
 912   {
 913     GAddress_destroy(m_peer);
 914     m_peer  = NULL;
 915     m_error = err;
 916     return -1;
 917   }
 918
 919   return ret;
 920 }
 921
 922 int wxSocketImplUnix::Send_Stream(const char *buffer, int size)
 923 {
 924   int ret;
 925
 926   MASK_SIGNAL();
 927
 928   do
 929   {
 930     ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL);
 931   }
 932   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 933
 934   UNMASK_SIGNAL();
 935
 936   return ret;
 937 }
 938
 939 int wxSocketImplUnix::Send_Dgram(const char *buffer, int size)
 940 {
 941   struct sockaddr *addr;
 942   int len, ret;
 943   wxSocketError err;
 944
 945   if (!m_peer)
 946   {
 947     m_error = wxSOCKET_INVADDR;
 948     return -1;
 949   }
 950
 951   err = _GAddress_translate_to(m_peer, &addr, &len);
 952   if (err != wxSOCKET_NOERROR)
 953   {
 954     m_error = err;
 955     return -1;
 956   }
 957
 958   MASK_SIGNAL();
 959
 960   do
 961   {
 962     ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);
 963   }
 964   while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
 965
 966   UNMASK_SIGNAL();
 967
 968   /* Frees memory allocated from _GAddress_translate_to */
 969   free(addr);
 970
 971   return ret;
 972 }
 973
 974 void wxSocketImplUnix::OnStateChange(wxSocketNotify event)
 975 {
 976     DisableEvent(event);
 977     NotifyOnStateChange(event);
 978
 979     if ( event == wxSOCKET_LOST )
 980         Shutdown();
 981 }
 982
 983 void wxSocketImplUnix::OnReadWaiting()
 984 {
 985   char c;
 986
 987   if (m_fd == INVALID_SOCKET)
 988   {
 989     return;
 990   }
 991
 992   /* If we have already detected a LOST event, then don't try
 993    * to do any further processing.
 994    */
 995   if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
 996   {
 997     m_establishing = false;
 998
 999     OnStateChange(wxSOCKET_LOST);
1000     return;
1001   }
1002
1003   int num =  recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
1004
1005   if (num > 0)
1006   {
1007     OnStateChange(wxSOCKET_INPUT);
1008   }
1009   else
1010   {
1011     if (m_server && m_stream)
1012     {
1013       OnStateChange(wxSOCKET_CONNECTION);
1014     }
1015     else if (num == 0)
1016     {
1017       if (m_stream)
1018       {
1019         /* graceful shutdown */
1020         OnStateChange(wxSOCKET_LOST);
1021       }
1022       else
1023       {
1024         /* Empty datagram received */
1025         OnStateChange(wxSOCKET_INPUT);
1026       }
1027     }
1028     else
1029     {
1030       /* Do not throw a lost event in cases where the socket isn't really lost */
1031       if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR))
1032       {
1033         OnStateChange(wxSOCKET_INPUT);
1034       }
1035       else
1036       {
1037         OnStateChange(wxSOCKET_LOST);
1038       }
1039     }
1040   }
1041 }
1042
1043 void wxSocketImplUnix::OnWriteWaiting()
1044 {
1045   /* If we have already detected a LOST event, then don't try
1046    * to do any further processing.
1047    */
1048   if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
1049   {
1050     m_establishing = false;
1051
1052     OnStateChange(wxSOCKET_LOST);
1053     return;
1054   }
1055
1056   if (m_establishing && !m_server)
1057   {
1058     int error;
1059     SOCKOPTLEN_T len = sizeof(error);
1060
1061     m_establishing = false;
1062
1063     getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
1064
1065     if (error)
1066     {
1067       OnStateChange(wxSOCKET_LOST);
1068     }
1069     else
1070     {
1071       OnStateChange(wxSOCKET_CONNECTION);
1072       /* We have to fire this event by hand because CONNECTION (for clients)
1073        * and OUTPUT are internally the same and we just disabled CONNECTION
1074        * events with the above macro.
1075        */
1076       OnStateChange(wxSOCKET_OUTPUT);
1077     }
1078   }
1079   else
1080   {
1081     OnStateChange(wxSOCKET_OUTPUT);
1082   }
1083 }
1084
1085 void wxSocketImplUnix::OnExceptionWaiting()
1086 {
1087     wxFAIL_MSG( "not supposed to be called" );
1088 }
1089
1090 /*
1091  * -------------------------------------------------------------------------
1092  * GAddress
1093  * -------------------------------------------------------------------------
1094  */
1095
1096 /* CHECK_ADDRESS verifies that the current address family is either
1097  * wxSOCKET_NOFAMILY or wxSOCKET_*family*, and if it is wxSOCKET_NOFAMILY, it
1098  * initalizes it to be a wxSOCKET_*family*. In other cases, it returns
1099  * an appropiate error code.
1100  *
1101  * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1102  */
1103 #define CHECK_ADDRESS(address, family)                              \
1104 {                                                                   \
1105   if (address->m_family == wxSOCKET_NOFAMILY)                          \
1106     if (_GAddress_Init_##family(address) != wxSOCKET_NOERROR)          \
1107       return address->m_error;                                      \
1108   if (address->m_family != wxSOCKET_##family)                          \
1109   {                                                                 \
1110     address->m_error = wxSOCKET_INVADDR;                               \
1111     return wxSOCKET_INVADDR;                                           \
1112   }                                                                 \
1113 }
1114
1115 #define CHECK_ADDRESS_RETVAL(address, family, retval)               \
1116 {                                                                   \
1117   if (address->m_family == wxSOCKET_NOFAMILY)                          \
1118     if (_GAddress_Init_##family(address) != wxSOCKET_NOERROR)          \
1119       return retval;                                                \
1120   if (address->m_family != wxSOCKET_##family)                          \
1121   {                                                                 \
1122     address->m_error = wxSOCKET_INVADDR;                               \
1123     return retval;                                                  \
1124   }                                                                 \
1125 }
1126
1127
1128 GAddress *GAddress_new(void)
1129 {
1130   GAddress *address;
1131
1132   if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1133     return NULL;
1134
1135   address->m_family  = wxSOCKET_NOFAMILY;
1136   address->m_addr    = NULL;
1137   address->m_len     = 0;
1138
1139   return address;
1140 }
1141
1142 GAddress *GAddress_copy(GAddress *address)
1143 {
1144   GAddress *addr2;
1145
1146   assert(address != NULL);
1147
1148   if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1149     return NULL;
1150
1151   memcpy(addr2, address, sizeof(GAddress));
1152
1153   if (address->m_addr && address->m_len > 0)
1154   {
1155     addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1156     if (addr2->m_addr == NULL)
1157     {
1158       free(addr2);
1159       return NULL;
1160     }
1161     memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1162   }
1163
1164   return addr2;
1165 }
1166
1167 void GAddress_destroy(GAddress *address)
1168 {
1169   assert(address != NULL);
1170
1171   if (address->m_addr)
1172     free(address->m_addr);
1173
1174   free(address);
1175 }
1176
1177 void GAddress_SetFamily(GAddress *address, GAddressType type)
1178 {
1179   assert(address != NULL);
1180
1181   address->m_family = type;
1182 }
1183
1184 GAddressType GAddress_GetFamily(GAddress *address)
1185 {
1186   assert(address != NULL);
1187
1188   return address->m_family;
1189 }
1190
1191 wxSocketError _GAddress_translate_from(GAddress *address,
1192                                       struct sockaddr *addr, int len)
1193 {
1194   address->m_realfamily = addr->sa_family;
1195   switch (addr->sa_family)
1196   {
1197     case AF_INET:
1198       address->m_family = wxSOCKET_INET;
1199       break;
1200     case AF_UNIX:
1201       address->m_family = wxSOCKET_UNIX;
1202       break;
1203 #if wxUSE_IPV6
1204     case AF_INET6:
1205       address->m_family = wxSOCKET_INET6;
1206       break;
1207 #endif // wxUSE_IPV6
1208     default:
1209     {
1210       address->m_error = wxSOCKET_INVOP;
1211       return wxSOCKET_INVOP;
1212     }
1213   }
1214
1215   if (address->m_addr)
1216     free(address->m_addr);
1217
1218   address->m_len  = len;
1219   address->m_addr = (struct sockaddr *)malloc(len);
1220
1221   if (address->m_addr == NULL)
1222   {
1223     address->m_error = wxSOCKET_MEMERR;
1224     return wxSOCKET_MEMERR;
1225   }
1226
1227   memcpy(address->m_addr, addr, len);
1228
1229   return wxSOCKET_NOERROR;
1230 }
1231
1232 wxSocketError _GAddress_translate_to(GAddress *address,
1233                                     struct sockaddr **addr, int *len)
1234 {
1235   if (!address->m_addr)
1236   {
1237     address->m_error = wxSOCKET_INVADDR;
1238     return wxSOCKET_INVADDR;
1239   }
1240
1241   *len = address->m_len;
1242   *addr = (struct sockaddr *)malloc(address->m_len);
1243   if (*addr == NULL)
1244   {
1245     address->m_error = wxSOCKET_MEMERR;
1246     return wxSOCKET_MEMERR;
1247   }
1248
1249   memcpy(*addr, address->m_addr, address->m_len);
1250   return wxSOCKET_NOERROR;
1251 }
1252
1253 /*
1254  * -------------------------------------------------------------------------
1255  * Internet address family
1256  * -------------------------------------------------------------------------
1257  */
1258
1259 wxSocketError _GAddress_Init_INET(GAddress *address)
1260 {
1261   address->m_len  = sizeof(struct sockaddr_in);
1262   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1263   if (address->m_addr == NULL)
1264   {
1265     address->m_error = wxSOCKET_MEMERR;
1266     return wxSOCKET_MEMERR;
1267   }
1268
1269   address->m_family = wxSOCKET_INET;
1270   address->m_realfamily = PF_INET;
1271   ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
1272   ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
1273
1274   return wxSOCKET_NOERROR;
1275 }
1276
1277 wxSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
1278 {
1279   struct hostent *he;
1280   struct in_addr *addr;
1281
1282   assert(address != NULL);
1283
1284   CHECK_ADDRESS(address, INET);
1285
1286   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1287
1288   /* If it is a numeric host name, convert it now */
1289 #if defined(HAVE_INET_ATON)
1290   if (inet_aton(hostname, addr) == 0)
1291   {
1292 #elif defined(HAVE_INET_ADDR)
1293   if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 )
1294   {
1295 #else
1296   /* Use gethostbyname by default */
1297 #ifndef __WXMAC__
1298   int val = 1;  /* VA doesn't like constants in conditional expressions */
1299   if (val)
1300 #endif
1301   {
1302 #endif
1303     struct in_addr *array_addr;
1304
1305     /* It is a real name, we solve it */
1306     struct hostent h;
1307 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
1308     struct hostent_data buffer;
1309 #else
1310     char buffer[1024];
1311 #endif
1312     int err;
1313     he = wxGethostbyname_r(hostname, &h, (void*)&buffer, sizeof(buffer), &err);
1314     if (he == NULL)
1315     {
1316       /* Reset to invalid address */
1317       addr->s_addr = INADDR_NONE;
1318       address->m_error = wxSOCKET_NOHOST;
1319       return wxSOCKET_NOHOST;
1320     }
1321
1322     array_addr = (struct in_addr *) *(he->h_addr_list);
1323     addr->s_addr = array_addr[0].s_addr;
1324   }
1325
1326   return wxSOCKET_NOERROR;
1327 }
1328
1329
1330 wxSocketError GAddress_INET_SetBroadcastAddress(GAddress *address)
1331 {
1332   return GAddress_INET_SetHostAddress(address, INADDR_BROADCAST);
1333 }
1334
1335 wxSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1336 {
1337   return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1338 }
1339
1340 wxSocketError GAddress_INET_SetHostAddress(GAddress *address,
1341                                           unsigned long hostaddr)
1342 {
1343   struct in_addr *addr;
1344
1345   assert(address != NULL);
1346
1347   CHECK_ADDRESS(address, INET);
1348
1349   addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1350   addr->s_addr = htonl(hostaddr);
1351
1352   return wxSOCKET_NOERROR;
1353 }
1354
1355 wxSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1356                                        const char *protocol)
1357 {
1358   struct servent *se;
1359   struct sockaddr_in *addr;
1360
1361   assert(address != NULL);
1362   CHECK_ADDRESS(address, INET);
1363
1364   if (!port)
1365   {
1366     address->m_error = wxSOCKET_INVPORT;
1367     return wxSOCKET_INVPORT;
1368   }
1369
1370 #if defined(HAVE_FUNC_GETSERVBYNAME_R_4)
1371     struct servent_data buffer;
1372 #else
1373   char buffer[1024];
1374 #endif
1375   struct servent serv;
1376   se = wxGetservbyname_r(port, protocol, &serv,
1377                          (void*)&buffer, sizeof(buffer));
1378   if (!se)
1379   {
1380     /* the cast to int suppresses compiler warnings about subscript having the
1381        type char */
1382     if (isdigit((int)port[0]))
1383     {
1384       int port_int;
1385
1386       port_int = atoi(port);
1387       addr = (struct sockaddr_in *)address->m_addr;
1388       addr->sin_port = htons(port_int);
1389       return wxSOCKET_NOERROR;
1390     }
1391
1392     address->m_error = wxSOCKET_INVPORT;
1393     return wxSOCKET_INVPORT;
1394   }
1395
1396   addr = (struct sockaddr_in *)address->m_addr;
1397   addr->sin_port = se->s_port;
1398
1399   return wxSOCKET_NOERROR;
1400 }
1401
1402 wxSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1403 {
1404   struct sockaddr_in *addr;
1405
1406   assert(address != NULL);
1407   CHECK_ADDRESS(address, INET);
1408
1409   addr = (struct sockaddr_in *)address->m_addr;
1410   addr->sin_port = htons(port);
1411
1412   return wxSOCKET_NOERROR;
1413 }
1414
1415 wxSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1416 {
1417   struct hostent *he;
1418   char *addr_buf;
1419   struct sockaddr_in *addr;
1420
1421   assert(address != NULL);
1422   CHECK_ADDRESS(address, INET);
1423
1424   addr = (struct sockaddr_in *)address->m_addr;
1425   addr_buf = (char *)&(addr->sin_addr);
1426
1427   struct hostent temphost;
1428 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
1429   struct hostent_data buffer;
1430 #else
1431   char buffer[1024];
1432 #endif
1433   int err;
1434   he = wxGethostbyaddr_r(addr_buf, sizeof(addr->sin_addr), AF_INET, &temphost,
1435                          (void*)&buffer, sizeof(buffer), &err);
1436   if (he == NULL)
1437   {
1438     address->m_error = wxSOCKET_NOHOST;
1439     return wxSOCKET_NOHOST;
1440   }
1441
1442   strncpy(hostname, he->h_name, sbuf);
1443
1444   return wxSOCKET_NOERROR;
1445 }
1446
1447 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1448 {
1449   struct sockaddr_in *addr;
1450
1451   assert(address != NULL);
1452   CHECK_ADDRESS_RETVAL(address, INET, 0);
1453
1454   addr = (struct sockaddr_in *)address->m_addr;
1455
1456   return ntohl(addr->sin_addr.s_addr);
1457 }
1458
1459 unsigned short GAddress_INET_GetPort(GAddress *address)
1460 {
1461   struct sockaddr_in *addr;
1462
1463   assert(address != NULL);
1464   CHECK_ADDRESS_RETVAL(address, INET, 0);
1465
1466   addr = (struct sockaddr_in *)address->m_addr;
1467   return ntohs(addr->sin_port);
1468 }
1469
1470 #if wxUSE_IPV6
1471 /*
1472  * -------------------------------------------------------------------------
1473  * Internet IPv6 address family
1474  * -------------------------------------------------------------------------
1475  */
1476
1477 wxSocketError _GAddress_Init_INET6(GAddress *address)
1478 {
1479   struct in6_addr any_address = IN6ADDR_ANY_INIT;
1480   address->m_len  = sizeof(struct sockaddr_in6);
1481   address->m_addr = (struct sockaddr *) malloc(address->m_len);
1482   if (address->m_addr == NULL)
1483   {
1484     address->m_error = wxSOCKET_MEMERR;
1485     return wxSOCKET_MEMERR;
1486   }
1487   memset(address->m_addr,0,address->m_len);
1488
1489   address->m_family = wxSOCKET_INET6;
1490   address->m_realfamily = AF_INET6;
1491   ((struct sockaddr_in6 *)address->m_addr)->sin6_family = AF_INET6;
1492   ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = any_address;
1493
1494   return wxSOCKET_NOERROR;
1495 }
1496
1497 wxSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname)
1498 {
1499   assert(address != NULL);
1500   CHECK_ADDRESS(address, INET6);
1501
1502   addrinfo hints;
1503   memset( & hints, 0, sizeof( hints ) );
1504   hints.ai_family = AF_INET6;
1505   addrinfo * info = 0;
1506   if ( getaddrinfo( hostname, "0", & hints, & info ) || ! info )
1507   {
1508     address->m_error = wxSOCKET_NOHOST;
1509     return wxSOCKET_NOHOST;
1510   }
1511
1512   memcpy( address->m_addr, info->ai_addr, info->ai_addrlen );
1513   freeaddrinfo( info );
1514   return wxSOCKET_NOERROR;
1515 }
1516
1517 wxSocketError GAddress_INET6_SetAnyAddress(GAddress *address)
1518 {
1519   assert(address != NULL);
1520
1521   CHECK_ADDRESS(address, INET6);
1522
1523   struct in6_addr addr;
1524   memset( & addr, 0, sizeof( addr ) );
1525   return GAddress_INET6_SetHostAddress(address, addr);
1526 }
1527 wxSocketError GAddress_INET6_SetHostAddress(GAddress *address,
1528                                           struct in6_addr hostaddr)
1529 {
1530   assert(address != NULL);
1531
1532   CHECK_ADDRESS(address, INET6);
1533
1534   ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = hostaddr;
1535
1536   return wxSOCKET_NOERROR;
1537 }
1538
1539 wxSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port,
1540                                        const char *protocol)
1541 {
1542   struct servent *se;
1543   struct sockaddr_in6 *addr;
1544
1545   assert(address != NULL);
1546   CHECK_ADDRESS(address, INET6);
1547
1548   if (!port)
1549   {
1550     address->m_error = wxSOCKET_INVPORT;
1551     return wxSOCKET_INVPORT;
1552   }
1553
1554   se = getservbyname(port, protocol);
1555   if (!se)
1556   {
1557     if (isdigit(port[0]))
1558     {
1559       int port_int;
1560
1561       port_int = atoi(port);
1562       addr = (struct sockaddr_in6 *)address->m_addr;
1563       addr->sin6_port = htons((u_short) port_int);
1564       return wxSOCKET_NOERROR;
1565     }
1566
1567     address->m_error = wxSOCKET_INVPORT;
1568     return wxSOCKET_INVPORT;
1569   }
1570
1571   addr = (struct sockaddr_in6 *)address->m_addr;
1572   addr->sin6_port = se->s_port;
1573
1574   return wxSOCKET_NOERROR;
1575 }
1576
1577 wxSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port)
1578 {
1579   struct sockaddr_in6 *addr;
1580
1581   assert(address != NULL);
1582   CHECK_ADDRESS(address, INET6);
1583
1584   addr = (struct sockaddr_in6 *)address->m_addr;
1585   addr->sin6_port = htons(port);
1586
1587   return wxSOCKET_NOERROR;
1588 }
1589
1590 wxSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1591 {
1592   struct hostent *he;
1593   char *addr_buf;
1594   struct sockaddr_in6 *addr;
1595
1596   assert(address != NULL);
1597   CHECK_ADDRESS(address, INET6);
1598
1599   addr = (struct sockaddr_in6 *)address->m_addr;
1600   addr_buf = (char *)&(addr->sin6_addr);
1601
1602   he = gethostbyaddr(addr_buf, sizeof(addr->sin6_addr), AF_INET6);
1603   if (he == NULL)
1604   {
1605     address->m_error = wxSOCKET_NOHOST;
1606     return wxSOCKET_NOHOST;
1607   }
1608
1609   strncpy(hostname, he->h_name, sbuf);
1610
1611   return wxSOCKET_NOERROR;
1612 }
1613
1614 wxSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr)
1615 {
1616   assert(address != NULL);
1617   assert(hostaddr != NULL);
1618   CHECK_ADDRESS_RETVAL(address, INET6, wxSOCKET_INVADDR);
1619   *hostaddr = ( (struct sockaddr_in6 *)address->m_addr )->sin6_addr;
1620   return wxSOCKET_NOERROR;
1621 }
1622
1623 unsigned short GAddress_INET6_GetPort(GAddress *address)
1624 {
1625   assert(address != NULL);
1626   CHECK_ADDRESS_RETVAL(address, INET6, 0);
1627
1628   return ntohs( ((struct sockaddr_in6 *)address->m_addr)->sin6_port );
1629 }
1630
1631 #endif // wxUSE_IPV6
1632
1633 /*
1634  * -------------------------------------------------------------------------
1635  * Unix address family
1636  * -------------------------------------------------------------------------
1637  */
1638
1639 #ifndef __VISAGECPP__
1640 wxSocketError _GAddress_Init_UNIX(GAddress *address)
1641 {
1642   address->m_len  = sizeof(struct sockaddr_un);
1643   address->m_addr = (struct sockaddr *)malloc(address->m_len);
1644   if (address->m_addr == NULL)
1645   {
1646     address->m_error = wxSOCKET_MEMERR;
1647     return wxSOCKET_MEMERR;
1648   }
1649
1650   address->m_family = wxSOCKET_UNIX;
1651   address->m_realfamily = PF_UNIX;
1652   ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
1653   ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
1654
1655   return wxSOCKET_NOERROR;
1656 }
1657
1658 #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))
1659
1660 wxSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
1661 {
1662   struct sockaddr_un *addr;
1663
1664   assert(address != NULL);
1665
1666   CHECK_ADDRESS(address, UNIX);
1667
1668   addr = ((struct sockaddr_un *)address->m_addr);
1669   strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
1670   addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';
1671
1672   return wxSOCKET_NOERROR;
1673 }
1674
1675 wxSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
1676 {
1677   struct sockaddr_un *addr;
1678
1679   assert(address != NULL);
1680   CHECK_ADDRESS(address, UNIX);
1681
1682   addr = (struct sockaddr_un *)address->m_addr;
1683
1684   strncpy(path, addr->sun_path, sbuf);
1685
1686   return wxSOCKET_NOERROR;
1687 }
1688 #endif  /* !defined(__VISAGECPP__) */
1689
1690 #endif  /* wxUSE_SOCKETS */