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