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[wxWidgets.git] / 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 /* static */
428 wxSocketImpl *wxSocketImpl::Create(wxSocketBase& wxsocket)
429 {
430 return new wxSocketImplUnix(wxsocket);
431 }
432
433
434 /*
435 * Disallow further read/write operations on this socket, close
436 * the fd and disable all callbacks.
437 */
438 void wxSocketImplUnix::Shutdown()
439 {
440 /* Don't allow events to fire after socket has been closed */
441 DisableEvents();
442
443 wxSocketImpl::Shutdown();
444 }
445
446 wxSocketError wxSocketImplUnix::GetLastError() const
447 {
448 switch ( errno )
449 {
450 case 0:
451 return wxSOCKET_NOERROR;
452
453 case ENOTSOCK:
454 return wxSOCKET_INVSOCK;
455
456 case EINPROGRESS:
457 return wxSOCKET_WOULDBLOCK;
458
459 default:
460 return wxSOCKET_IOERR;
461 }
462 }
463
464 void wxSocketImplUnix::DoEnableEvents(bool flag)
465 {
466 wxSocketManager * const manager = wxSocketManager::Get();
467 if ( flag )
468 {
469 manager->Install_Callback(this, wxSOCKET_INPUT);
470 manager->Install_Callback(this, wxSOCKET_OUTPUT);
471 }
472 else // off
473 {
474 manager->Uninstall_Callback(this, wxSOCKET_INPUT);
475 manager->Uninstall_Callback(this, wxSOCKET_OUTPUT);
476 }
477 }
478
479 /* Generic IO */
480
481 /* Like recv(), send(), ... */
482 int wxSocketImplUnix::Read(void *buffer, int size)
483 {
484 int ret;
485
486 if (m_fd == INVALID_SOCKET || m_server)
487 {
488 m_error = wxSOCKET_INVSOCK;
489 return -1;
490 }
491
492 /* Disable events during query of socket status */
493 DisableEvent(wxSOCKET_INPUT);
494
495 /* Read the data */
496 if (m_stream)
497 ret = Recv_Stream(buffer, size);
498 else
499 ret = Recv_Dgram(buffer, size);
500
501 /*
502 * If recv returned zero for a TCP socket (if m_stream == NULL, it's an UDP
503 * socket and empty datagrams are possible), then the connection has been
504 * gracefully closed.
505 *
506 * Otherwise, recv has returned an error (-1), in which case we have lost
507 * the socket only if errno does _not_ indicate that there may be more data
508 * to read.
509 */
510 if ((ret == 0) && m_stream)
511 {
512 /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */
513 m_detected = wxSOCKET_LOST_FLAG;
514 OnReadWaiting();
515 return 0;
516 }
517 else if (ret == -1)
518 {
519 if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
520 m_error = wxSOCKET_WOULDBLOCK;
521 else
522 m_error = wxSOCKET_IOERR;
523 }
524
525 /* Enable events again now that we are done processing */
526 EnableEvent(wxSOCKET_INPUT);
527
528 return ret;
529 }
530
531 int wxSocketImplUnix::Write(const void *buffer, int size)
532 {
533 int ret;
534
535 if (m_fd == INVALID_SOCKET || m_server)
536 {
537 m_error = wxSOCKET_INVSOCK;
538 return -1;
539 }
540
541 /* Write the data */
542 if (m_stream)
543 ret = Send_Stream(buffer, size);
544 else
545 ret = Send_Dgram(buffer, size);
546
547 if (ret == -1)
548 {
549 if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
550 {
551 m_error = wxSOCKET_WOULDBLOCK;
552 }
553 else
554 {
555 m_error = wxSOCKET_IOERR;
556 }
557
558 /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
559 * in MSW). Once the first OUTPUT event is received, users can assume
560 * that the socket is writable until a read operation fails. Only then
561 * will further OUTPUT events be posted.
562 */
563 EnableEvent(wxSOCKET_OUTPUT);
564
565 return -1;
566 }
567
568 return ret;
569 }
570
571 /* Flags */
572
573 void wxSocketImplUnix::EnableEvent(wxSocketNotify event)
574 {
575 m_detected &= ~(1 << event);
576 wxSocketManager::Get()->Install_Callback(this, event);
577 }
578
579 void wxSocketImplUnix::DisableEvent(wxSocketNotify event)
580 {
581 m_detected |= (1 << event);
582 wxSocketManager::Get()->Uninstall_Callback(this, event);
583 }
584
585 int wxSocketImplUnix::Recv_Stream(void *buffer, int size)
586 {
587 int ret;
588 do
589 {
590 ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
591 }
592 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
593
594 return ret;
595 }
596
597 int wxSocketImplUnix::Recv_Dgram(void *buffer, int size)
598 {
599 wxSockAddr from;
600 WX_SOCKLEN_T fromlen = sizeof(from);
601 int ret;
602 wxSocketError err;
603
604 fromlen = sizeof(from);
605
606 do
607 {
608 ret = recvfrom(m_fd, buffer, size, 0, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
609 }
610 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
611
612 if (ret == -1)
613 return -1;
614
615 /* Translate a system address into a wxSocketImplUnix address */
616 if (!m_peer)
617 {
618 m_peer = GAddress_new();
619 if (!m_peer)
620 {
621 m_error = wxSOCKET_MEMERR;
622 return -1;
623 }
624 }
625
626 err = _GAddress_translate_from(m_peer, (sockaddr*)&from, fromlen);
627 if (err != wxSOCKET_NOERROR)
628 {
629 GAddress_destroy(m_peer);
630 m_peer = NULL;
631 m_error = err;
632 return -1;
633 }
634
635 return ret;
636 }
637
638 int wxSocketImplUnix::Send_Stream(const void *buffer, int size)
639 {
640 int ret;
641
642 MASK_SIGNAL();
643
644 do
645 {
646 ret = send(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
647 }
648 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
649
650 UNMASK_SIGNAL();
651
652 return ret;
653 }
654
655 int wxSocketImplUnix::Send_Dgram(const void *buffer, int size)
656 {
657 struct sockaddr *addr;
658 int len, ret;
659 wxSocketError err;
660
661 if (!m_peer)
662 {
663 m_error = wxSOCKET_INVADDR;
664 return -1;
665 }
666
667 err = _GAddress_translate_to(m_peer, &addr, &len);
668 if (err != wxSOCKET_NOERROR)
669 {
670 m_error = err;
671 return -1;
672 }
673
674 MASK_SIGNAL();
675
676 do
677 {
678 ret = sendto(m_fd, buffer, size, 0, addr, len);
679 }
680 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
681
682 UNMASK_SIGNAL();
683
684 /* Frees memory allocated from _GAddress_translate_to */
685 free(addr);
686
687 return ret;
688 }
689
690 void wxSocketImplUnix::OnStateChange(wxSocketNotify event)
691 {
692 DisableEvent(event);
693 NotifyOnStateChange(event);
694
695 if ( event == wxSOCKET_LOST )
696 Shutdown();
697 }
698
699 void wxSocketImplUnix::OnReadWaiting()
700 {
701 char c;
702
703 if (m_fd == INVALID_SOCKET)
704 {
705 return;
706 }
707
708 /* If we have already detected a LOST event, then don't try
709 * to do any further processing.
710 */
711 if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
712 {
713 m_establishing = false;
714
715 OnStateChange(wxSOCKET_LOST);
716 return;
717 }
718
719 int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
720
721 if (num > 0)
722 {
723 OnStateChange(wxSOCKET_INPUT);
724 }
725 else
726 {
727 if (m_server && m_stream)
728 {
729 OnStateChange(wxSOCKET_CONNECTION);
730 }
731 else if (num == 0)
732 {
733 if (m_stream)
734 {
735 /* graceful shutdown */
736 OnStateChange(wxSOCKET_LOST);
737 }
738 else
739 {
740 /* Empty datagram received */
741 OnStateChange(wxSOCKET_INPUT);
742 }
743 }
744 else
745 {
746 /* Do not throw a lost event in cases where the socket isn't really lost */
747 if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR))
748 {
749 OnStateChange(wxSOCKET_INPUT);
750 }
751 else
752 {
753 OnStateChange(wxSOCKET_LOST);
754 }
755 }
756 }
757 }
758
759 void wxSocketImplUnix::OnWriteWaiting()
760 {
761 /* If we have already detected a LOST event, then don't try
762 * to do any further processing.
763 */
764 if ((m_detected & wxSOCKET_LOST_FLAG) != 0)
765 {
766 m_establishing = false;
767
768 OnStateChange(wxSOCKET_LOST);
769 return;
770 }
771
772 if (m_establishing && !m_server)
773 {
774 int error;
775 SOCKOPTLEN_T len = sizeof(error);
776
777 m_establishing = false;
778
779 getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
780
781 if (error)
782 {
783 OnStateChange(wxSOCKET_LOST);
784 }
785 else
786 {
787 OnStateChange(wxSOCKET_CONNECTION);
788 /* We have to fire this event by hand because CONNECTION (for clients)
789 * and OUTPUT are internally the same and we just disabled CONNECTION
790 * events with the above macro.
791 */
792 OnStateChange(wxSOCKET_OUTPUT);
793 }
794 }
795 else
796 {
797 OnStateChange(wxSOCKET_OUTPUT);
798 }
799 }
800
801 void wxSocketImplUnix::OnExceptionWaiting()
802 {
803 wxFAIL_MSG( "not supposed to be called" );
804 }
805
806 /*
807 * -------------------------------------------------------------------------
808 * GAddress
809 * -------------------------------------------------------------------------
810 */
811
812 /* CHECK_ADDRESS verifies that the current address family is either
813 * wxSOCKET_NOFAMILY or wxSOCKET_*family*, and if it is wxSOCKET_NOFAMILY, it
814 * initalizes it to be a wxSOCKET_*family*. In other cases, it returns
815 * an appropiate error code.
816 *
817 * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
818 */
819 #define CHECK_ADDRESS(address, family) \
820 { \
821 if (address->m_family == wxSOCKET_NOFAMILY) \
822 if (_GAddress_Init_##family(address) != wxSOCKET_NOERROR) \
823 return address->m_error; \
824 if (address->m_family != wxSOCKET_##family) \
825 { \
826 address->m_error = wxSOCKET_INVADDR; \
827 return wxSOCKET_INVADDR; \
828 } \
829 }
830
831 #define CHECK_ADDRESS_RETVAL(address, family, retval) \
832 { \
833 if (address->m_family == wxSOCKET_NOFAMILY) \
834 if (_GAddress_Init_##family(address) != wxSOCKET_NOERROR) \
835 return retval; \
836 if (address->m_family != wxSOCKET_##family) \
837 { \
838 address->m_error = wxSOCKET_INVADDR; \
839 return retval; \
840 } \
841 }
842
843
844 GAddress *GAddress_new(void)
845 {
846 GAddress *address;
847
848 if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
849 return NULL;
850
851 address->m_family = wxSOCKET_NOFAMILY;
852 address->m_addr = NULL;
853 address->m_len = 0;
854
855 return address;
856 }
857
858 GAddress *GAddress_copy(GAddress *address)
859 {
860 GAddress *addr2;
861
862 assert(address != NULL);
863
864 if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
865 return NULL;
866
867 memcpy(addr2, address, sizeof(GAddress));
868
869 if (address->m_addr && address->m_len > 0)
870 {
871 addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
872 if (addr2->m_addr == NULL)
873 {
874 free(addr2);
875 return NULL;
876 }
877 memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
878 }
879
880 return addr2;
881 }
882
883 void GAddress_destroy(GAddress *address)
884 {
885 assert(address != NULL);
886
887 if (address->m_addr)
888 free(address->m_addr);
889
890 free(address);
891 }
892
893 void GAddress_SetFamily(GAddress *address, GAddressType type)
894 {
895 assert(address != NULL);
896
897 address->m_family = type;
898 }
899
900 GAddressType GAddress_GetFamily(GAddress *address)
901 {
902 assert(address != NULL);
903
904 return address->m_family;
905 }
906
907 wxSocketError _GAddress_translate_from(GAddress *address,
908 struct sockaddr *addr, int len)
909 {
910 address->m_realfamily = addr->sa_family;
911 switch (addr->sa_family)
912 {
913 case AF_INET:
914 address->m_family = wxSOCKET_INET;
915 break;
916 case AF_UNIX:
917 address->m_family = wxSOCKET_UNIX;
918 break;
919 #if wxUSE_IPV6
920 case AF_INET6:
921 address->m_family = wxSOCKET_INET6;
922 break;
923 #endif // wxUSE_IPV6
924 default:
925 {
926 address->m_error = wxSOCKET_INVOP;
927 return wxSOCKET_INVOP;
928 }
929 }
930
931 if (address->m_addr)
932 free(address->m_addr);
933
934 address->m_len = len;
935 address->m_addr = (struct sockaddr *)malloc(len);
936
937 if (address->m_addr == NULL)
938 {
939 address->m_error = wxSOCKET_MEMERR;
940 return wxSOCKET_MEMERR;
941 }
942
943 memcpy(address->m_addr, addr, len);
944
945 return wxSOCKET_NOERROR;
946 }
947
948 wxSocketError _GAddress_translate_to(GAddress *address,
949 struct sockaddr **addr, int *len)
950 {
951 if (!address->m_addr)
952 {
953 address->m_error = wxSOCKET_INVADDR;
954 return wxSOCKET_INVADDR;
955 }
956
957 *len = address->m_len;
958 *addr = (struct sockaddr *)malloc(address->m_len);
959 if (*addr == NULL)
960 {
961 address->m_error = wxSOCKET_MEMERR;
962 return wxSOCKET_MEMERR;
963 }
964
965 memcpy(*addr, address->m_addr, address->m_len);
966 return wxSOCKET_NOERROR;
967 }
968
969 /*
970 * -------------------------------------------------------------------------
971 * Internet address family
972 * -------------------------------------------------------------------------
973 */
974
975 wxSocketError _GAddress_Init_INET(GAddress *address)
976 {
977 address->m_len = sizeof(struct sockaddr_in);
978 address->m_addr = (struct sockaddr *) malloc(address->m_len);
979 if (address->m_addr == NULL)
980 {
981 address->m_error = wxSOCKET_MEMERR;
982 return wxSOCKET_MEMERR;
983 }
984
985 address->m_family = wxSOCKET_INET;
986 address->m_realfamily = PF_INET;
987 ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
988 ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
989
990 return wxSOCKET_NOERROR;
991 }
992
993 wxSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
994 {
995 struct hostent *he;
996 struct in_addr *addr;
997
998 assert(address != NULL);
999
1000 CHECK_ADDRESS(address, INET);
1001
1002 addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1003
1004 /* If it is a numeric host name, convert it now */
1005 #if defined(HAVE_INET_ATON)
1006 if (inet_aton(hostname, addr) == 0)
1007 {
1008 #elif defined(HAVE_INET_ADDR)
1009 if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 )
1010 {
1011 #else
1012 /* Use gethostbyname by default */
1013 #ifndef __WXMAC__
1014 int val = 1; /* VA doesn't like constants in conditional expressions */
1015 if (val)
1016 #endif
1017 {
1018 #endif
1019 struct in_addr *array_addr;
1020
1021 /* It is a real name, we solve it */
1022 struct hostent h;
1023 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
1024 struct hostent_data buffer;
1025 #else
1026 char buffer[1024];
1027 #endif
1028 int err;
1029 he = wxGethostbyname_r(hostname, &h, (void*)&buffer, sizeof(buffer), &err);
1030 if (he == NULL)
1031 {
1032 /* Reset to invalid address */
1033 addr->s_addr = INADDR_NONE;
1034 address->m_error = wxSOCKET_NOHOST;
1035 return wxSOCKET_NOHOST;
1036 }
1037
1038 array_addr = (struct in_addr *) *(he->h_addr_list);
1039 addr->s_addr = array_addr[0].s_addr;
1040 }
1041
1042 return wxSOCKET_NOERROR;
1043 }
1044
1045
1046 wxSocketError GAddress_INET_SetBroadcastAddress(GAddress *address)
1047 {
1048 return GAddress_INET_SetHostAddress(address, INADDR_BROADCAST);
1049 }
1050
1051 wxSocketError GAddress_INET_SetAnyAddress(GAddress *address)
1052 {
1053 return GAddress_INET_SetHostAddress(address, INADDR_ANY);
1054 }
1055
1056 wxSocketError GAddress_INET_SetHostAddress(GAddress *address,
1057 unsigned long hostaddr)
1058 {
1059 struct in_addr *addr;
1060
1061 assert(address != NULL);
1062
1063 CHECK_ADDRESS(address, INET);
1064
1065 addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
1066 addr->s_addr = htonl(hostaddr);
1067
1068 return wxSOCKET_NOERROR;
1069 }
1070
1071 wxSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
1072 const char *protocol)
1073 {
1074 struct servent *se;
1075 struct sockaddr_in *addr;
1076
1077 assert(address != NULL);
1078 CHECK_ADDRESS(address, INET);
1079
1080 if (!port)
1081 {
1082 address->m_error = wxSOCKET_INVPORT;
1083 return wxSOCKET_INVPORT;
1084 }
1085
1086 #if defined(HAVE_FUNC_GETSERVBYNAME_R_4)
1087 struct servent_data buffer;
1088 #else
1089 char buffer[1024];
1090 #endif
1091 struct servent serv;
1092 se = wxGetservbyname_r(port, protocol, &serv,
1093 (void*)&buffer, sizeof(buffer));
1094 if (!se)
1095 {
1096 /* the cast to int suppresses compiler warnings about subscript having the
1097 type char */
1098 if (isdigit((int)port[0]))
1099 {
1100 int port_int;
1101
1102 port_int = atoi(port);
1103 addr = (struct sockaddr_in *)address->m_addr;
1104 addr->sin_port = htons(port_int);
1105 return wxSOCKET_NOERROR;
1106 }
1107
1108 address->m_error = wxSOCKET_INVPORT;
1109 return wxSOCKET_INVPORT;
1110 }
1111
1112 addr = (struct sockaddr_in *)address->m_addr;
1113 addr->sin_port = se->s_port;
1114
1115 return wxSOCKET_NOERROR;
1116 }
1117
1118 wxSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
1119 {
1120 struct sockaddr_in *addr;
1121
1122 assert(address != NULL);
1123 CHECK_ADDRESS(address, INET);
1124
1125 addr = (struct sockaddr_in *)address->m_addr;
1126 addr->sin_port = htons(port);
1127
1128 return wxSOCKET_NOERROR;
1129 }
1130
1131 wxSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1132 {
1133 struct hostent *he;
1134 char *addr_buf;
1135 struct sockaddr_in *addr;
1136
1137 assert(address != NULL);
1138 CHECK_ADDRESS(address, INET);
1139
1140 addr = (struct sockaddr_in *)address->m_addr;
1141 addr_buf = (char *)&(addr->sin_addr);
1142
1143 struct hostent temphost;
1144 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
1145 struct hostent_data buffer;
1146 #else
1147 char buffer[1024];
1148 #endif
1149 int err;
1150 he = wxGethostbyaddr_r(addr_buf, sizeof(addr->sin_addr), AF_INET, &temphost,
1151 (void*)&buffer, sizeof(buffer), &err);
1152 if (he == NULL)
1153 {
1154 address->m_error = wxSOCKET_NOHOST;
1155 return wxSOCKET_NOHOST;
1156 }
1157
1158 strncpy(hostname, he->h_name, sbuf);
1159
1160 return wxSOCKET_NOERROR;
1161 }
1162
1163 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
1164 {
1165 struct sockaddr_in *addr;
1166
1167 assert(address != NULL);
1168 CHECK_ADDRESS_RETVAL(address, INET, 0);
1169
1170 addr = (struct sockaddr_in *)address->m_addr;
1171
1172 return ntohl(addr->sin_addr.s_addr);
1173 }
1174
1175 unsigned short GAddress_INET_GetPort(GAddress *address)
1176 {
1177 struct sockaddr_in *addr;
1178
1179 assert(address != NULL);
1180 CHECK_ADDRESS_RETVAL(address, INET, 0);
1181
1182 addr = (struct sockaddr_in *)address->m_addr;
1183 return ntohs(addr->sin_port);
1184 }
1185
1186 #if wxUSE_IPV6
1187 /*
1188 * -------------------------------------------------------------------------
1189 * Internet IPv6 address family
1190 * -------------------------------------------------------------------------
1191 */
1192
1193 wxSocketError _GAddress_Init_INET6(GAddress *address)
1194 {
1195 struct in6_addr any_address = IN6ADDR_ANY_INIT;
1196 address->m_len = sizeof(struct sockaddr_in6);
1197 address->m_addr = (struct sockaddr *) malloc(address->m_len);
1198 if (address->m_addr == NULL)
1199 {
1200 address->m_error = wxSOCKET_MEMERR;
1201 return wxSOCKET_MEMERR;
1202 }
1203 memset(address->m_addr,0,address->m_len);
1204
1205 address->m_family = wxSOCKET_INET6;
1206 address->m_realfamily = AF_INET6;
1207 ((struct sockaddr_in6 *)address->m_addr)->sin6_family = AF_INET6;
1208 ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = any_address;
1209
1210 return wxSOCKET_NOERROR;
1211 }
1212
1213 wxSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname)
1214 {
1215 assert(address != NULL);
1216 CHECK_ADDRESS(address, INET6);
1217
1218 addrinfo hints;
1219 memset( & hints, 0, sizeof( hints ) );
1220 hints.ai_family = AF_INET6;
1221 addrinfo * info = 0;
1222 if ( getaddrinfo( hostname, "0", & hints, & info ) || ! info )
1223 {
1224 address->m_error = wxSOCKET_NOHOST;
1225 return wxSOCKET_NOHOST;
1226 }
1227
1228 memcpy( address->m_addr, info->ai_addr, info->ai_addrlen );
1229 freeaddrinfo( info );
1230 return wxSOCKET_NOERROR;
1231 }
1232
1233 wxSocketError GAddress_INET6_SetAnyAddress(GAddress *address)
1234 {
1235 assert(address != NULL);
1236
1237 CHECK_ADDRESS(address, INET6);
1238
1239 struct in6_addr addr;
1240 memset( & addr, 0, sizeof( addr ) );
1241 return GAddress_INET6_SetHostAddress(address, addr);
1242 }
1243 wxSocketError GAddress_INET6_SetHostAddress(GAddress *address,
1244 struct in6_addr hostaddr)
1245 {
1246 assert(address != NULL);
1247
1248 CHECK_ADDRESS(address, INET6);
1249
1250 ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = hostaddr;
1251
1252 return wxSOCKET_NOERROR;
1253 }
1254
1255 wxSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port,
1256 const char *protocol)
1257 {
1258 struct servent *se;
1259 struct sockaddr_in6 *addr;
1260
1261 assert(address != NULL);
1262 CHECK_ADDRESS(address, INET6);
1263
1264 if (!port)
1265 {
1266 address->m_error = wxSOCKET_INVPORT;
1267 return wxSOCKET_INVPORT;
1268 }
1269
1270 se = getservbyname(port, protocol);
1271 if (!se)
1272 {
1273 if (isdigit(port[0]))
1274 {
1275 int port_int;
1276
1277 port_int = atoi(port);
1278 addr = (struct sockaddr_in6 *)address->m_addr;
1279 addr->sin6_port = htons((u_short) port_int);
1280 return wxSOCKET_NOERROR;
1281 }
1282
1283 address->m_error = wxSOCKET_INVPORT;
1284 return wxSOCKET_INVPORT;
1285 }
1286
1287 addr = (struct sockaddr_in6 *)address->m_addr;
1288 addr->sin6_port = se->s_port;
1289
1290 return wxSOCKET_NOERROR;
1291 }
1292
1293 wxSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port)
1294 {
1295 struct sockaddr_in6 *addr;
1296
1297 assert(address != NULL);
1298 CHECK_ADDRESS(address, INET6);
1299
1300 addr = (struct sockaddr_in6 *)address->m_addr;
1301 addr->sin6_port = htons(port);
1302
1303 return wxSOCKET_NOERROR;
1304 }
1305
1306 wxSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname, size_t sbuf)
1307 {
1308 struct hostent *he;
1309 char *addr_buf;
1310 struct sockaddr_in6 *addr;
1311
1312 assert(address != NULL);
1313 CHECK_ADDRESS(address, INET6);
1314
1315 addr = (struct sockaddr_in6 *)address->m_addr;
1316 addr_buf = (char *)&(addr->sin6_addr);
1317
1318 he = gethostbyaddr(addr_buf, sizeof(addr->sin6_addr), AF_INET6);
1319 if (he == NULL)
1320 {
1321 address->m_error = wxSOCKET_NOHOST;
1322 return wxSOCKET_NOHOST;
1323 }
1324
1325 strncpy(hostname, he->h_name, sbuf);
1326
1327 return wxSOCKET_NOERROR;
1328 }
1329
1330 wxSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr)
1331 {
1332 assert(address != NULL);
1333 assert(hostaddr != NULL);
1334 CHECK_ADDRESS_RETVAL(address, INET6, wxSOCKET_INVADDR);
1335 *hostaddr = ( (struct sockaddr_in6 *)address->m_addr )->sin6_addr;
1336 return wxSOCKET_NOERROR;
1337 }
1338
1339 unsigned short GAddress_INET6_GetPort(GAddress *address)
1340 {
1341 assert(address != NULL);
1342 CHECK_ADDRESS_RETVAL(address, INET6, 0);
1343
1344 return ntohs( ((struct sockaddr_in6 *)address->m_addr)->sin6_port );
1345 }
1346
1347 #endif // wxUSE_IPV6
1348
1349 /*
1350 * -------------------------------------------------------------------------
1351 * Unix address family
1352 * -------------------------------------------------------------------------
1353 */
1354
1355 #ifndef __VISAGECPP__
1356 wxSocketError _GAddress_Init_UNIX(GAddress *address)
1357 {
1358 address->m_len = sizeof(struct sockaddr_un);
1359 address->m_addr = (struct sockaddr *)malloc(address->m_len);
1360 if (address->m_addr == NULL)
1361 {
1362 address->m_error = wxSOCKET_MEMERR;
1363 return wxSOCKET_MEMERR;
1364 }
1365
1366 address->m_family = wxSOCKET_UNIX;
1367 address->m_realfamily = PF_UNIX;
1368 ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
1369 ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
1370
1371 return wxSOCKET_NOERROR;
1372 }
1373
1374 #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))
1375
1376 wxSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
1377 {
1378 struct sockaddr_un *addr;
1379
1380 assert(address != NULL);
1381
1382 CHECK_ADDRESS(address, UNIX);
1383
1384 addr = ((struct sockaddr_un *)address->m_addr);
1385 strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
1386 addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';
1387
1388 return wxSOCKET_NOERROR;
1389 }
1390
1391 wxSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
1392 {
1393 struct sockaddr_un *addr;
1394
1395 assert(address != NULL);
1396 CHECK_ADDRESS(address, UNIX);
1397
1398 addr = (struct sockaddr_un *)address->m_addr;
1399
1400 strncpy(path, addr->sun_path, sbuf);
1401
1402 return wxSOCKET_NOERROR;
1403 }
1404 #endif /* !defined(__VISAGECPP__) */
1405
1406 #endif /* wxUSE_SOCKETS */
wxWidgets (Impactor)