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[wxWidgets.git] / src / unix / gsocket.cpp
1 /* -------------------------------------------------------------------------
2 * Project: GSocket (Generic Socket) for WX
3 * Name: gsocket.c
4 * Copyright: (c) Guilhem Lavaux
5 * Licence: wxWindows Licence
6 * Authors: David Elliott (C++ conversion, maintainer)
7 * Guilhem Lavaux,
8 * Guillermo Rodriguez Garcia <guille@iies.es>
9 * Purpose: GSocket main Unix and OS/2 file
10 * Licence: The wxWindows licence
11 * CVSID: $Id$
12 * -------------------------------------------------------------------------
13 */
14
15 #if defined(__WATCOMC__)
16 #include "wx/wxprec.h"
17 #include <errno.h>
18 #include <nerrno.h>
19 #endif
20
21 #ifndef __GSOCKET_STANDALONE__
22 #include "wx/defs.h"
23 #include "wx/private/gsocketiohandler.h"
24 #include "wx/thread.h" // for wxThread::IsMain() used in assert
25 #endif
26
27 #if defined(__VISAGECPP__)
28 #define BSD_SELECT /* use Berkeley Sockets select */
29 #endif
30
31 #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
32
33 #include <assert.h>
34 #include <sys/types.h>
35 #ifdef __VISAGECPP__
36 #include <string.h>
37 #include <sys/time.h>
38 #include <types.h>
39 #include <netinet/in.h>
40 #endif
41 #include <netdb.h>
42 #include <sys/ioctl.h>
43
44 #ifdef HAVE_SYS_SELECT_H
45 # include <sys/select.h>
46 #endif
47
48 #ifdef __VMS__
49 #include <socket.h>
50 struct sockaddr_un
51 {
52 u_char sun_len; /* sockaddr len including null */
53 u_char sun_family; /* AF_UNIX */
54 char sun_path[108]; /* path name (gag) */
55 };
56 #else
57 #include <sys/socket.h>
58 #include <sys/un.h>
59 #endif
60
61 #ifndef __VISAGECPP__
62 #include <sys/time.h>
63 #include <netinet/in.h>
64 #include <arpa/inet.h>
65 #include <errno.h>
66 #include <string.h>
67 #include <unistd.h>
68 #else
69 #include <nerrno.h>
70 # if __IBMCPP__ < 400
71 #include <machine/endian.h>
72 #include <socket.h>
73 #include <ioctl.h>
74 #include <select.h>
75 #include <unistd.h>
76
77 #define EBADF SOCEBADF
78
79 # ifdef min
80 # undef min
81 # endif
82 # else
83 #include <sys/socket.h>
84 #include <sys/ioctl.h>
85 #include <sys/select.h>
86
87 #define close(a) soclose(a)
88 #define select(a,b,c,d,e) bsdselect(a,b,c,d,e)
89 int _System bsdselect(int,
90 struct fd_set *,
91 struct fd_set *,
92 struct fd_set *,
93 struct timeval *);
94 int _System soclose(int);
95 # endif
96 #endif
97 #ifdef __EMX__
98 #include <sys/select.h>
99 #endif
100
101 #include <stdio.h>
102 #include <stdlib.h>
103 #include <stddef.h>
104 #include <ctype.h>
105 #ifdef sun
106 # include <sys/filio.h>
107 #endif
108 #ifdef sgi
109 # include <bstring.h>
110 #endif
111 #ifdef _AIX
112 # include <strings.h>
113 #endif
114 #include <signal.h>
115
116 #ifndef WX_SOCKLEN_T
117
118 #ifdef VMS
119 # define WX_SOCKLEN_T unsigned int
120 #else
121 # ifdef __GLIBC__
122 # if __GLIBC__ == 2
123 # define WX_SOCKLEN_T socklen_t
124 # endif
125 # elif defined(__WXMAC__)
126 # define WX_SOCKLEN_T socklen_t
127 # else
128 # define WX_SOCKLEN_T int
129 # endif
130 #endif
131
132 #endif /* SOCKLEN_T */
133
134 #ifndef SOCKOPTLEN_T
135 #define SOCKOPTLEN_T WX_SOCKLEN_T
136 #endif
137
138 /*
139 * MSW defines this, Unices don't.
140 */
141 #ifndef INVALID_SOCKET
142 #define INVALID_SOCKET -1
143 #endif
144
145 /* UnixWare reportedly needs this for FIONBIO definition */
146 #ifdef __UNIXWARE__
147 #include <sys/filio.h>
148 #endif
149
150 /*
151 * INADDR_BROADCAST is identical to INADDR_NONE which is not defined
152 * on all systems. INADDR_BROADCAST should be fine to indicate an error.
153 */
154 #ifndef INADDR_NONE
155 #define INADDR_NONE INADDR_BROADCAST
156 #endif
157
158 #if defined(__VISAGECPP__) || defined(__WATCOMC__)
159
160 #define MASK_SIGNAL() {
161 #define UNMASK_SIGNAL() }
162
163 #else
164 extern "C" { typedef void (*wxSigHandler)(int); }
165
166 #define MASK_SIGNAL() \
167 { \
168 wxSigHandler old_handler = signal(SIGPIPE, SIG_IGN);
169
170 #define UNMASK_SIGNAL() \
171 signal(SIGPIPE, old_handler); \
172 }
173
174 #endif
175
176 /* If a SIGPIPE is issued by a socket call on a remotely closed socket,
177 the program will "crash" unless it explicitly handles the SIGPIPE.
178 By using MSG_NOSIGNAL, the SIGPIPE is suppressed. Later, we will
179 use SO_NOSIGPIPE (if available), the BSD equivalent. */
180 #ifdef MSG_NOSIGNAL
181 # define GSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL
182 #else /* MSG_NOSIGNAL not available (FreeBSD including OS X) */
183 # define GSOCKET_MSG_NOSIGNAL 0
184 #endif /* MSG_NOSIGNAL */
185
186 #ifndef __GSOCKET_STANDALONE__
187 # include "wx/unix/gsockunx.h"
188 # include "wx/unix/private.h"
189 # include "wx/gsocket.h"
190 #if wxUSE_THREADS && (defined(HAVE_GETHOSTBYNAME) || defined(HAVE_GETSERVBYNAME))
191 # include "wx/thread.h"
192 #endif
193 #else
194 # include "gsockunx.h"
195 # include "gsocket.h"
196 # ifndef WXUNUSED
197 # define WXUNUSED(x)
198 # endif
199 #endif /* __GSOCKET_STANDALONE__ */
200
201 #if defined(HAVE_GETHOSTBYNAME)
202 static struct hostent * deepCopyHostent(struct hostent *h,
203 const struct hostent *he,
204 char *buffer, int size, int *err)
205 {
206 /* copy old structure */
207 memcpy(h, he, sizeof(struct hostent));
208
209 /* copy name */
210 int len = strlen(h->h_name);
211 if (len > size)
212 {
213 *err = ENOMEM;
214 return NULL;
215 }
216 memcpy(buffer, h->h_name, len);
217 buffer[len] = '\0';
218 h->h_name = buffer;
219
220 /* track position in the buffer */
221 int pos = len + 1;
222
223 /* reuse len to store address length */
224 len = h->h_length;
225
226 /* ensure pointer alignment */
227 unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
228 if(misalign < sizeof(char *))
229 pos += misalign;
230
231 /* leave space for pointer list */
232 char **p = h->h_addr_list, **q;
233 char **h_addr_list = (char **)(buffer + pos);
234 while(*(p++) != 0)
235 pos += sizeof(char *);
236
237 /* copy addresses and fill new pointer list */
238 for (p = h->h_addr_list, q = h_addr_list; *p != 0; p++, q++)
239 {
240 if (size < pos + len)
241 {
242 *err = ENOMEM;
243 return NULL;
244 }
245 memcpy(buffer + pos, *p, len); /* copy content */
246 *q = buffer + pos; /* set copied pointer to copied content */
247 pos += len;
248 }
249 *++q = 0; /* null terminate the pointer list */
250 h->h_addr_list = h_addr_list; /* copy pointer to pointers */
251
252 /* ensure word alignment of pointers */
253 misalign = sizeof(char *) - pos%sizeof(char *);
254 if(misalign < sizeof(char *))
255 pos += misalign;
256
257 /* leave space for pointer list */
258 p = h->h_aliases;
259 char **h_aliases = (char **)(buffer + pos);
260 while(*(p++) != 0)
261 pos += sizeof(char *);
262
263 /* copy aliases and fill new pointer list */
264 for (p = h->h_aliases, q = h_aliases; *p != 0; p++, q++)
265 {
266 len = strlen(*p);
267 if (size <= pos + len)
268 {
269 *err = ENOMEM;
270 return NULL;
271 }
272 memcpy(buffer + pos, *p, len); /* copy content */
273 buffer[pos + len] = '\0';
274 *q = buffer + pos; /* set copied pointer to copied content */
275 pos += len + 1;
276 }
277 *++q = 0; /* null terminate the pointer list */
278 h->h_aliases = h_aliases; /* copy pointer to pointers */
279
280 return h;
281 }
282 #endif
283
284 #if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
285 static wxMutex nameLock;
286 #endif
287 struct hostent * wxGethostbyname_r(const char *hostname, struct hostent *h,
288 void *buffer, int size, int *err)
289
290 {
291 struct hostent *he = NULL;
292 *err = 0;
293 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
294 if (gethostbyname_r(hostname, h, (char*)buffer, size, &he, err))
295 he = NULL;
296 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
297 he = gethostbyname_r(hostname, h, (char*)buffer, size, err);
298 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
299 if (gethostbyname_r(hostname, h, (struct hostent_data*) buffer))
300 {
301 he = NULL;
302 *err = h_errno;
303 }
304 else
305 he = h;
306 #elif defined(HAVE_GETHOSTBYNAME)
307 #if wxUSE_THREADS
308 wxMutexLocker locker(nameLock);
309 #endif
310 he = gethostbyname(hostname);
311 if (!he)
312 *err = h_errno;
313 else
314 he = deepCopyHostent(h, he, (char*)buffer, size, err);
315 #endif
316 return he;
317 }
318
319 #if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
320 static wxMutex addrLock;
321 #endif
322 struct hostent * wxGethostbyaddr_r(const char *addr_buf, int buf_size,
323 int proto, struct hostent *h,
324 void *buffer, int size, int *err)
325 {
326 struct hostent *he = NULL;
327 *err = 0;
328 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
329 if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
330 (char*)buffer, size, &he, err))
331 he = NULL;
332 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
333 he = gethostbyaddr_r(addr_buf, buf_size, proto, h, (char*)buffer, size, err);
334 #elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
335 if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
336 (struct hostent_data*) buffer))
337 {
338 he = NULL;
339 *err = h_errno;
340 }
341 else
342 he = h;
343 #elif defined(HAVE_GETHOSTBYNAME)
344 #if wxUSE_THREADS
345 wxMutexLocker locker(addrLock);
346 #endif
347 he = gethostbyaddr(addr_buf, buf_size, proto);
348 if (!he)
349 *err = h_errno;
350 else
351 he = deepCopyHostent(h, he, (char*)buffer, size, err);
352 #endif
353 return he;
354 }
355
356 #if defined(HAVE_GETSERVBYNAME)
357 static struct servent * deepCopyServent(struct servent *s,
358 const struct servent *se,
359 char *buffer, int size)
360 {
361 /* copy plain old structure */
362 memcpy(s, se, sizeof(struct servent));
363
364 /* copy name */
365 int len = strlen(s->s_name);
366 if (len >= size)
367 {
368 return NULL;
369 }
370 memcpy(buffer, s->s_name, len);
371 buffer[len] = '\0';
372 s->s_name = buffer;
373
374 /* track position in the buffer */
375 int pos = len + 1;
376
377 /* copy protocol */
378 len = strlen(s->s_proto);
379 if (pos + len >= size)
380 {
381 return NULL;
382 }
383 memcpy(buffer + pos, s->s_proto, len);
384 buffer[pos + len] = '\0';
385 s->s_proto = buffer + pos;
386
387 /* track position in the buffer */
388 pos += len + 1;
389
390 /* ensure pointer alignment */
391 unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
392 if(misalign < sizeof(char *))
393 pos += misalign;
394
395 /* leave space for pointer list */
396 char **p = s->s_aliases, **q;
397 char **s_aliases = (char **)(buffer + pos);
398 while(*(p++) != 0)
399 pos += sizeof(char *);
400
401 /* copy addresses and fill new pointer list */
402 for (p = s->s_aliases, q = s_aliases; *p != 0; p++, q++){
403 len = strlen(*p);
404 if (size <= pos + len)
405 {
406 return NULL;
407 }
408 memcpy(buffer + pos, *p, len); /* copy content */
409 buffer[pos + len] = '\0';
410 *q = buffer + pos; /* set copied pointer to copied content */
411 pos += len + 1;
412 }
413 *++q = 0; /* null terminate the pointer list */
414 s->s_aliases = s_aliases; /* copy pointer to pointers */
415 return s;
416 }
417 #endif
418
419 #if defined(HAVE_GETSERVBYNAME) && wxUSE_THREADS
420 static wxMutex servLock;
421 #endif
422 struct servent *wxGetservbyname_r(const char *port, const char *protocol,
423 struct servent *serv, void *buffer, int size)
424 {
425 struct servent *se = NULL;
426 #if defined(HAVE_FUNC_GETSERVBYNAME_R_6)
427 if (getservbyname_r(port, protocol, serv, (char*)buffer, size, &se))
428 se = NULL;
429 #elif defined(HAVE_FUNC_GETSERVBYNAME_R_5)
430 se = getservbyname_r(port, protocol, serv, (char*)buffer, size);
431 #elif defined(HAVE_FUNC_GETSERVBYNAME_R_4)
432 if (getservbyname_r(port, protocol, serv, (struct servent_data*) buffer))
433 se = NULL;
434 else
435 se = serv;
436 #elif defined(HAVE_GETSERVBYNAME)
437 #if wxUSE_THREADS
438 wxMutexLocker locker(servLock);
439 #endif
440 se = getservbyname(port, protocol);
441 if (se)
442 se = deepCopyServent(serv, se, (char*)buffer, size);
443 #endif
444 return se;
445 }
446
447 /* debugging helpers */
448 #ifdef __GSOCKET_DEBUG__
449 # define GSocket_Debug(args) printf args
450 #else
451 # define GSocket_Debug(args)
452 #endif /* __GSOCKET_DEBUG__ */
453
454 #if wxUSE_IPV6
455 typedef struct sockaddr_storage wxSockAddr;
456 #else
457 typedef struct sockaddr wxSockAddr;
458 #endif
459
460 /* Table of GUI-related functions. We must call them indirectly because
461 * of wxBase and GUI separation: */
462
463 bool GSocket_Init()
464 {
465 GSocketManager * const manager = GSocketManager::Get();
466 return manager && manager->OnInit();
467 }
468
469 void GSocket_Cleanup()
470 {
471 GSocketManager * const manager = GSocketManager::Get();
472 if ( manager )
473 manager->OnExit();
474 }
475
476 /* Constructors / Destructors for GSocket */
477
478 GSocket::GSocket()
479 {
480 int i;
481
482 m_fd = INVALID_SOCKET;
483 m_handler = NULL;
484
485 for (i=0;i<GSOCK_MAX_EVENT;i++)
486 {
487 m_cbacks[i] = NULL;
488 }
489 m_detected = 0;
490 m_local = NULL;
491 m_peer = NULL;
492 m_error = GSOCK_NOERROR;
493 m_server = false;
494 m_stream = true;
495 m_gui_dependent = NULL;
496 m_non_blocking = false;
497 m_reusable = false;
498 m_broadcast = false;
499 m_dobind = true;
500 m_timeout = 10*60*1000;
501 /* 10 minutes * 60 sec * 1000 millisec */
502 m_establishing = false;
503 m_use_events = false;
504 m_initialRecvBufferSize = -1;
505 m_initialSendBufferSize = -1;
506
507 m_ok = GSocketManager::Get()->Init_Socket(this);
508 }
509
510 void GSocket::Close()
511 {
512 if (m_use_events)
513 DisableEvents();
514
515 /* When running on OS X, the gsockosx implementation of GSocketGUIFunctionsTable
516 will close the socket during Disable_Events. However, it will only do this
517 if it is being used. That is, it won't do it in a console program. To
518 ensure we get the right behavior, we have gsockosx set m_fd = INVALID_SOCKET
519 if it has closed the socket which indicates to us (at runtime, instead of
520 at compile time as this had been before) that the socket has already
521 been closed.
522 */
523 if(m_fd != INVALID_SOCKET)
524 close(m_fd);
525 m_fd = INVALID_SOCKET;
526 }
527
528 GSocket::~GSocket()
529 {
530 assert(this);
531
532 /* Check that the socket is really shutdowned */
533 if (m_fd != INVALID_SOCKET)
534 Shutdown();
535
536 GSocketManager::Get()->Destroy_Socket(this);
537
538 delete m_handler;
539
540 /* Destroy private addresses */
541 if (m_local)
542 GAddress_destroy(m_local);
543
544 if (m_peer)
545 GAddress_destroy(m_peer);
546
547 }
548
549 /* GSocket_Shutdown:
550 * Disallow further read/write operations on this socket, close
551 * the fd and disable all callbacks.
552 */
553 void GSocket::Shutdown()
554 {
555 int evt;
556
557 assert(this);
558
559 /* Don't allow events to fire after socket has been closed */
560 if (m_use_events)
561 DisableEvents();
562
563 /* If socket has been created, shutdown it */
564 if (m_fd != INVALID_SOCKET)
565 {
566 shutdown(m_fd, 1);
567 Close();
568 }
569
570 /* Disable GUI callbacks */
571 for (evt = 0; evt < GSOCK_MAX_EVENT; evt++)
572 m_cbacks[evt] = NULL;
573
574 m_detected = GSOCK_LOST_FLAG;
575 }
576
577 /* Address handling */
578
579 /* GSocket_SetLocal:
580 * GSocket_GetLocal:
581 * GSocket_SetPeer:
582 * GSocket_GetPeer:
583 * Set or get the local or peer address for this socket. The 'set'
584 * functions return GSOCK_NOERROR on success, an error code otherwise.
585 * The 'get' functions return a pointer to a GAddress object on success,
586 * or NULL otherwise, in which case they set the error code of the
587 * corresponding GSocket.
588 *
589 * Error codes:
590 * GSOCK_INVSOCK - the socket is not valid.
591 * GSOCK_INVADDR - the address is not valid.
592 */
593 GSocketError GSocket::SetLocal(GAddress *address)
594 {
595 assert(this);
596
597 /* the socket must be initialized, or it must be a server */
598 if ((m_fd != INVALID_SOCKET && !m_server))
599 {
600 m_error = GSOCK_INVSOCK;
601 return GSOCK_INVSOCK;
602 }
603
604 /* check address */
605 if (address == NULL || address->m_family == GSOCK_NOFAMILY)
606 {
607 m_error = GSOCK_INVADDR;
608 return GSOCK_INVADDR;
609 }
610
611 if (m_local)
612 GAddress_destroy(m_local);
613
614 m_local = GAddress_copy(address);
615
616 return GSOCK_NOERROR;
617 }
618
619 GSocketError GSocket::SetPeer(GAddress *address)
620 {
621 assert(this);
622
623 /* check address */
624 if (address == NULL || address->m_family == GSOCK_NOFAMILY)
625 {
626 m_error = GSOCK_INVADDR;
627 return GSOCK_INVADDR;
628 }
629
630 if (m_peer)
631 GAddress_destroy(m_peer);
632
633 m_peer = GAddress_copy(address);
634
635 return GSOCK_NOERROR;
636 }
637
638 GAddress *GSocket::GetLocal()
639 {
640 GAddress *address;
641 wxSockAddr addr;
642 WX_SOCKLEN_T size = sizeof(addr);
643 GSocketError err;
644
645 assert(this);
646
647 /* try to get it from the m_local var first */
648 if (m_local)
649 return GAddress_copy(m_local);
650
651 /* else, if the socket is initialized, try getsockname */
652 if (m_fd == INVALID_SOCKET)
653 {
654 m_error = GSOCK_INVSOCK;
655 return NULL;
656 }
657
658 if (getsockname(m_fd, (sockaddr*)&addr, (WX_SOCKLEN_T *) &size) < 0)
659 {
660 m_error = GSOCK_IOERR;
661 return NULL;
662 }
663
664 /* got a valid address from getsockname, create a GAddress object */
665 address = GAddress_new();
666 if (address == NULL)
667 {
668 m_error = GSOCK_MEMERR;
669 return NULL;
670 }
671
672 err = _GAddress_translate_from(address, (sockaddr*)&addr, size);
673 if (err != GSOCK_NOERROR)
674 {
675 GAddress_destroy(address);
676 m_error = err;
677 return NULL;
678 }
679
680 return address;
681 }
682
683 GAddress *GSocket::GetPeer()
684 {
685 assert(this);
686
687 /* try to get it from the m_peer var */
688 if (m_peer)
689 return GAddress_copy(m_peer);
690
691 return NULL;
692 }
693
694 /* Server specific parts */
695
696 /* GSocket_SetServer:
697 * Sets up this socket as a server. The local address must have been
698 * set with GSocket_SetLocal() before GSocket_SetServer() is called.
699 * Returns GSOCK_NOERROR on success, one of the following otherwise:
700 *
701 * Error codes:
702 * GSOCK_INVSOCK - the socket is in use.
703 * GSOCK_INVADDR - the local address has not been set.
704 * GSOCK_IOERR - low-level error.
705 */
706 GSocketError GSocket::SetServer()
707 {
708 int arg = 1;
709
710 assert(this);
711
712 /* must not be in use */
713 if (m_fd != INVALID_SOCKET)
714 {
715 m_error = GSOCK_INVSOCK;
716 return GSOCK_INVSOCK;
717 }
718
719 /* the local addr must have been set */
720 if (!m_local)
721 {
722 m_error = GSOCK_INVADDR;
723 return GSOCK_INVADDR;
724 }
725
726 /* Initialize all fields */
727 m_stream = true;
728 m_server = true;
729
730 /* Create the socket */
731 m_fd = socket(m_local->m_realfamily, SOCK_STREAM, 0);
732
733 if (m_fd == INVALID_SOCKET)
734 {
735 m_error = GSOCK_IOERR;
736 return GSOCK_IOERR;
737 }
738
739 /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */
740 #ifdef SO_NOSIGPIPE
741 setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(arg));
742 #endif
743
744 ioctl(m_fd, FIONBIO, &arg);
745 if (m_use_events)
746 EnableEvents();
747
748 /* allow a socket to re-bind if the socket is in the TIME_WAIT
749 state after being previously closed.
750 */
751 if (m_reusable)
752 {
753 setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg));
754 #ifdef SO_REUSEPORT
755 setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg));
756 #endif
757 }
758
759 /* Bind to the local address,
760 * retrieve the actual address bound,
761 * and listen up to 5 connections.
762 */
763 if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) ||
764 (getsockname(m_fd,
765 m_local->m_addr,
766 (WX_SOCKLEN_T *) &m_local->m_len) != 0) ||
767 (listen(m_fd, 5) != 0))
768 {
769 Close();
770 m_error = GSOCK_IOERR;
771 return GSOCK_IOERR;
772 }
773
774 return GSOCK_NOERROR;
775 }
776
777 /* GSocket_WaitConnection:
778 * Waits for an incoming client connection. Returns a pointer to
779 * a GSocket object, or NULL if there was an error, in which case
780 * the last error field will be updated for the calling GSocket.
781 *
782 * Error codes (set in the calling GSocket)
783 * GSOCK_INVSOCK - the socket is not valid or not a server.
784 * GSOCK_TIMEDOUT - timeout, no incoming connections.
785 * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking.
786 * GSOCK_MEMERR - couldn't allocate memory.
787 * GSOCK_IOERR - low-level error.
788 */
789 GSocket *GSocket::WaitConnection()
790 {
791 wxSockAddr from;
792 WX_SOCKLEN_T fromlen = sizeof(from);
793 GSocket *connection;
794 GSocketError err;
795 int arg = 1;
796
797 assert(this);
798
799 /* If the socket has already been created, we exit immediately */
800 if (m_fd == INVALID_SOCKET || !m_server)
801 {
802 m_error = GSOCK_INVSOCK;
803 return NULL;
804 }
805
806 /* Create a GSocket object for the new connection */
807 connection = GSocket_new();
808
809 if (!connection)
810 {
811 m_error = GSOCK_MEMERR;
812 return NULL;
813 }
814
815 /* Wait for a connection (with timeout) */
816 if (Input_Timeout() == GSOCK_TIMEDOUT)
817 {
818 delete connection;
819 /* m_error set by _GSocket_Input_Timeout */
820 return NULL;
821 }
822
823 connection->m_fd = accept(m_fd, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
824
825 /* Reenable CONNECTION events */
826 Enable(GSOCK_CONNECTION);
827
828 if (connection->m_fd == INVALID_SOCKET)
829 {
830 if (errno == EWOULDBLOCK)
831 m_error = GSOCK_WOULDBLOCK;
832 else
833 m_error = GSOCK_IOERR;
834
835 delete connection;
836 return NULL;
837 }
838
839 /* Initialize all fields */
840 connection->m_server = false;
841 connection->m_stream = true;
842
843 /* Setup the peer address field */
844 connection->m_peer = GAddress_new();
845 if (!connection->m_peer)
846 {
847 delete connection;
848 m_error = GSOCK_MEMERR;
849 return NULL;
850 }
851
852 err = _GAddress_translate_from(connection->m_peer, (sockaddr*)&from, fromlen);
853 if (err != GSOCK_NOERROR)
854 {
855 delete connection;
856 m_error = err;
857 return NULL;
858 }
859
860 #if defined(__EMX__) || defined(__VISAGECPP__)
861 ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
862 #else
863 ioctl(connection->m_fd, FIONBIO, &arg);
864 #endif
865 if (m_use_events)
866 connection->Notify(true);
867
868 return connection;
869 }
870
871 void GSocket::Notify(bool flag)
872 {
873 if (flag == m_use_events)
874 return;
875 #if wxUSE_THREADS
876 // it is not safe to attach or detach i/o descriptor in child thread
877 wxASSERT_MSG( wxThread::IsMain(), "should be called in main thread only" );
878 #endif
879 m_use_events = flag;
880 EnableEvents(flag);
881 }
882
883 void GSocket::EnableEvents(bool flag)
884 {
885 if (flag)
886 GSocketManager::Get()->Enable_Events(this);
887 else
888 GSocketManager::Get()->Disable_Events(this);
889 }
890
891 bool GSocket::SetReusable()
892 {
893 /* socket must not be null, and must not be in use/already bound */
894 if (this && m_fd == INVALID_SOCKET)
895 {
896 m_reusable = true;
897
898 return true;
899 }
900
901 return false;
902 }
903
904 bool GSocket::SetBroadcast()
905 {
906 /* socket must not be in use/already bound */
907 if (m_fd == INVALID_SOCKET) {
908 m_broadcast = true;
909 return true;
910 }
911 return false;
912 }
913
914 bool GSocket::DontDoBind()
915 {
916 /* socket must not be in use/already bound */
917 if (m_fd == INVALID_SOCKET) {
918 m_dobind = false;
919 return true;
920 }
921 return false;
922 }
923
924 /* Client specific parts */
925
926 /* GSocket_Connect:
927 * For stream (connection oriented) sockets, GSocket_Connect() tries
928 * to establish a client connection to a server using the peer address
929 * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
930 * connection has been successfully established, or one of the error
931 * codes listed below. Note that for nonblocking sockets, a return
932 * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
933 * request can be completed later; you should use GSocket_Select()
934 * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the
935 * corresponding asynchronous events.
936 *
937 * For datagram (non connection oriented) sockets, GSocket_Connect()
938 * just sets the peer address established with GSocket_SetPeer() as
939 * default destination.
940 *
941 * Error codes:
942 * GSOCK_INVSOCK - the socket is in use or not valid.
943 * GSOCK_INVADDR - the peer address has not been established.
944 * GSOCK_TIMEDOUT - timeout, the connection failed.
945 * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only)
946 * GSOCK_MEMERR - couldn't allocate memory.
947 * GSOCK_IOERR - low-level error.
948 */
949 GSocketError GSocket::Connect(GSocketStream stream)
950 {
951 int err, ret;
952 int arg = 1;
953
954 assert(this);
955
956 /* Enable CONNECTION events (needed for nonblocking connections) */
957 Enable(GSOCK_CONNECTION);
958
959 if (m_fd != INVALID_SOCKET)
960 {
961 m_error = GSOCK_INVSOCK;
962 return GSOCK_INVSOCK;
963 }
964
965 if (!m_peer)
966 {
967 m_error = GSOCK_INVADDR;
968 return GSOCK_INVADDR;
969 }
970
971 /* Streamed or dgram socket? */
972 m_stream = (stream == GSOCK_STREAMED);
973 m_server = false;
974 m_establishing = false;
975
976 /* Create the socket */
977 m_fd = socket(m_peer->m_realfamily,
978 m_stream? SOCK_STREAM : SOCK_DGRAM, 0);
979
980 if (m_fd == INVALID_SOCKET)
981 {
982 m_error = GSOCK_IOERR;
983 return GSOCK_IOERR;
984 }
985
986 /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */
987 #ifdef SO_NOSIGPIPE
988 setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(arg));
989 #endif
990
991 #if defined(__EMX__) || defined(__VISAGECPP__)
992 ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg));
993 #else
994 ioctl(m_fd, FIONBIO, &arg);
995 #endif
996
997 // If the reuse flag is set, use the applicable socket reuse flags(s)
998 if (m_reusable)
999 {
1000 setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg));
1001 #ifdef SO_REUSEPORT
1002 setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg));
1003 #endif
1004 }
1005
1006 if (m_initialRecvBufferSize >= 0)
1007 setsockopt(m_fd, SOL_SOCKET, SO_RCVBUF, (const char*)&m_initialRecvBufferSize, sizeof(m_initialRecvBufferSize));
1008 if (m_initialSendBufferSize >= 0)
1009 setsockopt(m_fd, SOL_SOCKET, SO_SNDBUF, (const char*)&m_initialSendBufferSize, sizeof(m_initialSendBufferSize));
1010
1011 // If a local address has been set, then we need to bind to it before calling connect
1012 if (m_local && m_local->m_addr)
1013 {
1014 bind(m_fd, m_local->m_addr, m_local->m_len);
1015 }
1016
1017 /* Connect it to the peer address, with a timeout (see below) */
1018 ret = connect(m_fd, m_peer->m_addr, m_peer->m_len);
1019
1020 /* We only call Enable_Events if we know we aren't shutting down the socket.
1021 * NB: Enable_Events needs to be called whether the socket is blocking or
1022 * non-blocking, it just shouldn't be called prior to knowing there is a
1023 * connection _if_ blocking sockets are being used.
1024 * If connect above returns 0, we are already connected and need to make the
1025 * call to Enable_Events now.
1026 */
1027
1028 if (m_use_events && (m_non_blocking || ret == 0))
1029 EnableEvents();
1030
1031 if (ret == -1)
1032 {
1033 err = errno;
1034
1035 /* If connect failed with EINPROGRESS and the GSocket object
1036 * is in blocking mode, we select() for the specified timeout
1037 * checking for writability to see if the connection request
1038 * completes.
1039 */
1040 if ((err == EINPROGRESS) && (!m_non_blocking))
1041 {
1042 if (Output_Timeout() == GSOCK_TIMEDOUT)
1043 {
1044 Close();
1045 /* m_error is set in _GSocket_Output_Timeout */
1046 return GSOCK_TIMEDOUT;
1047 }
1048 else
1049 {
1050 int error;
1051 SOCKOPTLEN_T len = sizeof(error);
1052
1053 getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len);
1054 if (m_use_events)
1055 EnableEvents();
1056
1057 if (!error)
1058 return GSOCK_NOERROR;
1059 }
1060 }
1061
1062 /* If connect failed with EINPROGRESS and the GSocket object
1063 * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK
1064 * (and return GSOCK_WOULDBLOCK) but we don't close the socket;
1065 * this way if the connection completes, a GSOCK_CONNECTION
1066 * event will be generated, if enabled.
1067 */
1068 if ((err == EINPROGRESS) && (m_non_blocking))
1069 {
1070 m_establishing = true;
1071 m_error = GSOCK_WOULDBLOCK;
1072 return GSOCK_WOULDBLOCK;
1073 }
1074
1075 /* If connect failed with an error other than EINPROGRESS,
1076 * then the call to GSocket_Connect has failed.
1077 */
1078 Close();
1079 m_error = GSOCK_IOERR;
1080
1081 return GSOCK_IOERR;
1082 }
1083
1084 return GSOCK_NOERROR;
1085 }
1086
1087 /* Datagram sockets */
1088
1089 /* GSocket_SetNonOriented:
1090 * Sets up this socket as a non-connection oriented (datagram) socket.
1091 * Before using this function, the local address must have been set
1092 * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR
1093 * on success, or one of the following otherwise.
1094 *
1095 * Error codes:
1096 * GSOCK_INVSOCK - the socket is in use.
1097 * GSOCK_INVADDR - the local address has not been set.
1098 * GSOCK_IOERR - low-level error.
1099 */
1100 GSocketError GSocket::SetNonOriented()
1101 {
1102 int arg = 1;
1103
1104 assert(this);
1105
1106 if (m_fd != INVALID_SOCKET)
1107 {
1108 m_error = GSOCK_INVSOCK;
1109 return GSOCK_INVSOCK;
1110 }
1111
1112 if (!m_local)
1113 {
1114 m_error = GSOCK_INVADDR;
1115 return GSOCK_INVADDR;
1116 }
1117
1118 /* Initialize all fields */
1119 m_stream = false;
1120 m_server = false;
1121
1122 /* Create the socket */
1123 m_fd = socket(m_local->m_realfamily, SOCK_DGRAM, 0);
1124
1125 if (m_fd == INVALID_SOCKET)
1126 {
1127 m_error = GSOCK_IOERR;
1128 return GSOCK_IOERR;
1129 }
1130 #if defined(__EMX__) || defined(__VISAGECPP__)
1131 ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg));
1132 #else
1133 ioctl(m_fd, FIONBIO, &arg);
1134 #endif
1135 if (m_use_events)
1136 EnableEvents();
1137
1138 if (m_reusable)
1139 {
1140 setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg));
1141 #ifdef SO_REUSEPORT
1142 setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg));
1143 #endif
1144 }
1145
1146 if (m_broadcast)
1147 {
1148 setsockopt(m_fd, SOL_SOCKET, SO_BROADCAST, (const char*)&arg, sizeof(arg));
1149 }
1150 if (m_dobind)
1151 {
1152 /* Bind to the local address,
1153 * and retrieve the actual address bound.
1154 */
1155 if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) ||
1156 (getsockname(m_fd,
1157 m_local->m_addr,
1158 (WX_SOCKLEN_T *) &m_local->m_len) != 0))
1159 {
1160 Close();
1161 m_error = GSOCK_IOERR;
1162 return GSOCK_IOERR;
1163 }
1164 }
1165 return GSOCK_NOERROR;
1166 }
1167
1168 /* Generic IO */
1169
1170 /* Like recv(), send(), ... */
1171 int GSocket::Read(char *buffer, int size)
1172 {
1173 int ret;
1174
1175 assert(this);
1176
1177 if (m_fd == INVALID_SOCKET || m_server)
1178 {
1179 m_error = GSOCK_INVSOCK;
1180 return -1;
1181 }
1182
1183 /* Disable events during query of socket status */
1184 Disable(GSOCK_INPUT);
1185
1186 /* If the socket is blocking, wait for data (with a timeout) */
1187 if (Input_Timeout() == GSOCK_TIMEDOUT) {
1188 m_error = GSOCK_TIMEDOUT;
1189 /* Don't return here immediately, otherwise socket events would not be
1190 * re-enabled! */
1191 ret = -1;
1192 }
1193 else
1194 {
1195 /* Read the data */
1196 if (m_stream)
1197 ret = Recv_Stream(buffer, size);
1198 else
1199 ret = Recv_Dgram(buffer, size);
1200
1201 /*
1202 * If recv returned zero for a TCP socket (if m_stream == NULL, it's an UDP
1203 * socket and empty datagrams are possible), then the connection has been
1204 * gracefully closed.
1205 *
1206 * Otherwise, recv has returned an error (-1), in which case we have lost
1207 * the socket only if errno does _not_ indicate that there may be more data
1208 * to read.
1209 */
1210 if ((ret == 0) && m_stream)
1211 {
1212 /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */
1213 if (m_use_events)
1214 {
1215 m_detected = GSOCK_LOST_FLAG;
1216 Detected_Read();
1217 return 0;
1218 }
1219 }
1220 else if (ret == -1)
1221 {
1222 if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
1223 m_error = GSOCK_WOULDBLOCK;
1224 else
1225 m_error = GSOCK_IOERR;
1226 }
1227 }
1228
1229 /* Enable events again now that we are done processing */
1230 Enable(GSOCK_INPUT);
1231
1232 return ret;
1233 }
1234
1235 int GSocket::Write(const char *buffer, int size)
1236 {
1237 int ret;
1238
1239 assert(this);
1240
1241 GSocket_Debug(( "GSocket_Write #1, size %d\n", size ));
1242
1243 if (m_fd == INVALID_SOCKET || m_server)
1244 {
1245 m_error = GSOCK_INVSOCK;
1246 return -1;
1247 }
1248
1249 GSocket_Debug(( "GSocket_Write #2, size %d\n", size ));
1250
1251 /* If the socket is blocking, wait for writability (with a timeout) */
1252 if (Output_Timeout() == GSOCK_TIMEDOUT)
1253 return -1;
1254
1255 GSocket_Debug(( "GSocket_Write #3, size %d\n", size ));
1256
1257 /* Write the data */
1258 if (m_stream)
1259 ret = Send_Stream(buffer, size);
1260 else
1261 ret = Send_Dgram(buffer, size);
1262
1263 GSocket_Debug(( "GSocket_Write #4, size %d\n", size ));
1264
1265 if (ret == -1)
1266 {
1267 if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
1268 {
1269 m_error = GSOCK_WOULDBLOCK;
1270 GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));
1271 }
1272 else
1273 {
1274 m_error = GSOCK_IOERR;
1275 GSocket_Debug(( "GSocket_Write error IOERR\n" ));
1276 }
1277
1278 /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
1279 * in MSW). Once the first OUTPUT event is received, users can assume
1280 * that the socket is writable until a read operation fails. Only then
1281 * will further OUTPUT events be posted.
1282 */
1283 Enable(GSOCK_OUTPUT);
1284
1285 return -1;
1286 }
1287
1288 GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret ));
1289
1290 return ret;
1291 }
1292
1293 /* GSocket_Select:
1294 * Polls the socket to determine its status. This function will
1295 * check for the events specified in the 'flags' parameter, and
1296 * it will return a mask indicating which operations can be
1297 * performed. This function won't block, regardless of the
1298 * mode (blocking | nonblocking) of the socket.
1299 */
1300 GSocketEventFlags GSocket::Select(GSocketEventFlags flags)
1301 {
1302 assert(this);
1303
1304 GSocketEventFlags result = 0;
1305 fd_set readfds;
1306 fd_set writefds;
1307 fd_set exceptfds;
1308 struct timeval tv;
1309
1310 if (m_fd == -1)
1311 return (GSOCK_LOST_FLAG & flags);
1312
1313 /* Do not use a static struct, Linux can garble it */
1314 tv.tv_sec = 0;
1315 tv.tv_usec = 0;
1316
1317 wxFD_ZERO(&readfds);
1318 wxFD_ZERO(&writefds);
1319 wxFD_ZERO(&exceptfds);
1320 wxFD_SET(m_fd, &readfds);
1321 if (flags & GSOCK_OUTPUT_FLAG || flags & GSOCK_CONNECTION_FLAG)
1322 wxFD_SET(m_fd, &writefds);
1323 wxFD_SET(m_fd, &exceptfds);
1324
1325 /* Check 'sticky' CONNECTION flag first */
1326 result |= GSOCK_CONNECTION_FLAG & m_detected;
1327
1328 /* If we have already detected a LOST event, then don't try
1329 * to do any further processing.
1330 */
1331 if ((m_detected & GSOCK_LOST_FLAG) != 0)
1332 {
1333 m_establishing = false;
1334 return (GSOCK_LOST_FLAG & flags);
1335 }
1336
1337 /* Try select now */
1338 if (select(m_fd + 1, &readfds, &writefds, &exceptfds, &tv) < 0)
1339 {
1340 /* What to do here? */
1341 return (result & flags);
1342 }
1343
1344 /* Check for exceptions and errors */
1345 if (wxFD_ISSET(m_fd, &exceptfds))
1346 {
1347 m_establishing = false;
1348 m_detected = GSOCK_LOST_FLAG;
1349
1350 /* LOST event: Abort any further processing */
1351 return (GSOCK_LOST_FLAG & flags);
1352 }
1353
1354 /* Check for readability */
1355 if (wxFD_ISSET(m_fd, &readfds))
1356 {
1357 result |= GSOCK_INPUT_FLAG;
1358
1359 if (m_server && m_stream)
1360 {
1361 /* This is a TCP server socket that detected a connection.
1362 While the INPUT_FLAG is also set, it doesn't matter on
1363 this kind of sockets, as we can only Accept() from them. */
1364 m_detected |= GSOCK_CONNECTION_FLAG;
1365 }
1366 }
1367
1368 /* Check for writability */
1369 if (wxFD_ISSET(m_fd, &writefds))
1370 {
1371 if (m_establishing && !m_server)
1372 {
1373 int error;
1374 SOCKOPTLEN_T len = sizeof(error);
1375 m_establishing = false;
1376 getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
1377
1378 if (error)
1379 {
1380 m_detected = GSOCK_LOST_FLAG;
1381
1382 /* LOST event: Abort any further processing */
1383 return (GSOCK_LOST_FLAG & flags);
1384 }
1385 else
1386 {
1387 m_detected |= GSOCK_CONNECTION_FLAG;
1388 }
1389 }
1390 else
1391 {
1392 result |= GSOCK_OUTPUT_FLAG;
1393 }
1394 }
1395
1396 return (result | m_detected) & flags;
1397 }
1398
1399 /* Flags */
1400
1401 /* GSocket_SetNonBlocking:
1402 * Sets the socket to non-blocking mode. All IO calls will return
1403 * immediately.
1404 */
1405 void GSocket::SetNonBlocking(bool non_block)
1406 {
1407 assert(this);
1408
1409 GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) );
1410
1411 m_non_blocking = non_block;
1412 }
1413
1414 /* GSocket_SetTimeout:
1415 * Sets the timeout for blocking calls. Time is expressed in
1416 * milliseconds.
1417 */
1418 void GSocket::SetTimeout(unsigned long millisec)
1419 {
1420 assert(this);
1421
1422 m_timeout = millisec;
1423 }
1424
1425 /* GSocket_GetError:
1426 * Returns the last error occurred for this socket. Note that successful
1427 * operations do not clear this back to GSOCK_NOERROR, so use it only
1428 * after an error.
1429 */
1430 GSocketError WXDLLIMPEXP_NET GSocket::GetError()
1431 {
1432 assert(this);
1433
1434 return m_error;
1435 }
1436
1437 /* Callbacks */
1438
1439 /* GSOCK_INPUT:
1440 * There is data to be read in the input buffer. If, after a read
1441 * operation, there is still data available, the callback function will
1442 * be called again.
1443 * GSOCK_OUTPUT:
1444 * The socket is available for writing. That is, the next write call
1445 * won't block. This event is generated only once, when the connection is
1446 * first established, and then only if a call failed with GSOCK_WOULDBLOCK,
1447 * when the output buffer empties again. This means that the app should
1448 * assume that it can write since the first OUTPUT event, and no more
1449 * OUTPUT events will be generated unless an error occurs.
1450 * GSOCK_CONNECTION:
1451 * Connection successfully established, for client sockets, or incoming
1452 * client connection, for server sockets. Wait for this event (also watch
1453 * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
1454 * GSOCK_LOST:
1455 * The connection is lost (or a connection request failed); this could
1456 * be due to a failure, or due to the peer closing it gracefully.
1457 */
1458
1459 /* GSocket_SetCallback:
1460 * Enables the callbacks specified by 'flags'. Note that 'flags'
1461 * may be a combination of flags OR'ed toghether, so the same
1462 * callback function can be made to accept different events.
1463 * The callback function must have the following prototype:
1464 *
1465 * void function(GSocket *socket, GSocketEvent event, char *cdata)
1466 */
1467 void GSocket::SetCallback(GSocketEventFlags flags,
1468 GSocketCallback callback, char *cdata)
1469 {
1470 int count;
1471
1472 assert(this);
1473
1474 for (count = 0; count < GSOCK_MAX_EVENT; count++)
1475 {
1476 if ((flags & (1 << count)) != 0)
1477 {
1478 m_cbacks[count] = callback;
1479 m_data[count] = cdata;
1480 }
1481 }
1482 }
1483
1484 /* GSocket_UnsetCallback:
1485 * Disables all callbacks specified by 'flags', which may be a
1486 * combination of flags OR'ed toghether.
1487 */
1488 void GSocket::UnsetCallback(GSocketEventFlags flags)
1489 {
1490 int count;
1491
1492 assert(this);
1493
1494 for (count = 0; count < GSOCK_MAX_EVENT; count++)
1495 {
1496 if ((flags & (1 << count)) != 0)
1497 {
1498 m_cbacks[count] = NULL;
1499 m_data[count] = NULL;
1500 }
1501 }
1502 }
1503
1504 GSocketError GSocket::GetSockOpt(int level, int optname,
1505 void *optval, int *optlen)
1506 {
1507 if (getsockopt(m_fd, level, optname, (char*)optval, (SOCKOPTLEN_T*)optlen) == 0)
1508 return GSOCK_NOERROR;
1509
1510 return GSOCK_OPTERR;
1511 }
1512
1513 GSocketError GSocket::SetSockOpt(int level, int optname,
1514 const void *optval, int optlen)
1515 {
1516 if (setsockopt(m_fd, level, optname, (const char*)optval, optlen) == 0)
1517 return GSOCK_NOERROR;
1518
1519 return GSOCK_OPTERR;
1520 }
1521
1522 #define CALL_CALLBACK(socket, event) { \
1523 socket->Disable(event); \
1524 if (socket->m_cbacks[event]) \
1525 socket->m_cbacks[event](socket, event, socket->m_data[event]); \
1526 }
1527
1528
1529 void GSocket::Enable(GSocketEvent event)
1530 {
1531 if (m_use_events)
1532 {
1533 m_detected &= ~(1 << event);
1534 GSocketManager::Get()->Install_Callback(this, event);
1535 }
1536 }
1537
1538 void GSocket::Disable(GSocketEvent event)
1539 {
1540 if (m_use_events)
1541 {
1542 m_detected |= (1 << event);
1543 GSocketManager::Get()->Uninstall_Callback(this, event);
1544 }
1545 }
1546
1547 /* _GSocket_Input_Timeout:
1548 * For blocking sockets, wait until data is available or
1549 * until timeout ellapses.
1550 */
1551 GSocketError GSocket::Input_Timeout()
1552 {
1553 struct timeval tv;
1554 fd_set readfds;
1555 int ret;
1556
1557 /* Linux select() will overwrite the struct on return */
1558 tv.tv_sec = (m_timeout / 1000);
1559 tv.tv_usec = (m_timeout % 1000) * 1000;
1560
1561 if (!m_non_blocking)
1562 {
1563 wxFD_ZERO(&readfds);
1564 wxFD_SET(m_fd, &readfds);
1565 ret = select(m_fd + 1, &readfds, NULL, NULL, &tv);
1566 if (ret == 0)
1567 {
1568 GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" ));
1569 m_error = GSOCK_TIMEDOUT;
1570 return GSOCK_TIMEDOUT;
1571 }
1572
1573 if (ret == -1)
1574 {
1575 GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" ));
1576 if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); }
1577 if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); }
1578 if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); }
1579 if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); }
1580 m_error = GSOCK_TIMEDOUT;
1581 return GSOCK_TIMEDOUT;
1582 }
1583 }
1584
1585 return GSOCK_NOERROR;
1586 }
1587
1588 /* _GSocket_Output_Timeout:
1589 * For blocking sockets, wait until data can be sent without
1590 * blocking or until timeout ellapses.
1591 */
1592 GSocketError GSocket::Output_Timeout()
1593 {
1594 struct timeval tv;
1595 fd_set writefds;
1596 int ret;
1597
1598 /* Linux select() will overwrite the struct on return */
1599 tv.tv_sec = (m_timeout / 1000);
1600 tv.tv_usec = (m_timeout % 1000) * 1000;
1601
1602 GSocket_Debug( ("m_non_blocking has: %d\n", (int)m_non_blocking) );
1603
1604 if (!m_non_blocking)
1605 {
1606 wxFD_ZERO(&writefds);
1607 wxFD_SET(m_fd, &writefds);
1608 ret = select(m_fd + 1, NULL, &writefds, NULL, &tv);
1609 if (ret == 0)
1610 {
1611 GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" ));
1612 m_error = GSOCK_TIMEDOUT;
1613 return GSOCK_TIMEDOUT;
1614 }
1615
1616 if (ret == -1)
1617 {
1618 GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" ));
1619 if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); }
1620 if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); }
1621 if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); }
1622 if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); }
1623 m_error = GSOCK_TIMEDOUT;
1624 return GSOCK_TIMEDOUT;
1625 }
1626
1627 if ( ! wxFD_ISSET(m_fd, &writefds) )
1628 {
1629 GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" ));
1630 }
1631 else
1632 {
1633 GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" ));
1634 }
1635 }
1636 else
1637 {
1638 GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" ));
1639 }
1640
1641 return GSOCK_NOERROR;
1642 }
1643
1644 int GSocket::Recv_Stream(char *buffer, int size)
1645 {
1646 int ret;
1647 do
1648 {
1649 ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
1650 }
1651 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
1652
1653 return ret;
1654 }
1655
1656 int GSocket::Recv_Dgram(char *buffer, int size)
1657 {
1658 wxSockAddr from;
1659 WX_SOCKLEN_T fromlen = sizeof(from);
1660 int ret;
1661 GSocketError err;
1662
1663 fromlen = sizeof(from);
1664
1665 do
1666 {
1667 ret = recvfrom(m_fd, buffer, size, 0, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen);
1668 }
1669 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
1670
1671 if (ret == -1)
1672 return -1;
1673
1674 /* Translate a system address into a GSocket address */
1675 if (!m_peer)
1676 {
1677 m_peer = GAddress_new();
1678 if (!m_peer)
1679 {
1680 m_error = GSOCK_MEMERR;
1681 return -1;
1682 }
1683 }
1684
1685 err = _GAddress_translate_from(m_peer, (sockaddr*)&from, fromlen);
1686 if (err != GSOCK_NOERROR)
1687 {
1688 GAddress_destroy(m_peer);
1689 m_peer = NULL;
1690 m_error = err;
1691 return -1;
1692 }
1693
1694 return ret;
1695 }
1696
1697 int GSocket::Send_Stream(const char *buffer, int size)
1698 {
1699 int ret;
1700
1701 MASK_SIGNAL();
1702
1703 do
1704 {
1705 ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL);
1706 }
1707 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
1708
1709 UNMASK_SIGNAL();
1710
1711 return ret;
1712 }
1713
1714 int GSocket::Send_Dgram(const char *buffer, int size)
1715 {
1716 struct sockaddr *addr;
1717 int len, ret;
1718 GSocketError err;
1719
1720 if (!m_peer)
1721 {
1722 m_error = GSOCK_INVADDR;
1723 return -1;
1724 }
1725
1726 err = _GAddress_translate_to(m_peer, &addr, &len);
1727 if (err != GSOCK_NOERROR)
1728 {
1729 m_error = err;
1730 return -1;
1731 }
1732
1733 MASK_SIGNAL();
1734
1735 do
1736 {
1737 ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);
1738 }
1739 while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
1740
1741 UNMASK_SIGNAL();
1742
1743 /* Frees memory allocated from _GAddress_translate_to */
1744 free(addr);
1745
1746 return ret;
1747 }
1748
1749 void GSocket::Detected_Read()
1750 {
1751 char c;
1752
1753 /* Safeguard against straggling call to Detected_Read */
1754 if (m_fd == INVALID_SOCKET)
1755 {
1756 return;
1757 }
1758
1759 /* If we have already detected a LOST event, then don't try
1760 * to do any further processing.
1761 */
1762 if ((m_detected & GSOCK_LOST_FLAG) != 0)
1763 {
1764 m_establishing = false;
1765
1766 CALL_CALLBACK(this, GSOCK_LOST);
1767 Shutdown();
1768 return;
1769 }
1770
1771 int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
1772
1773 if (num > 0)
1774 {
1775 CALL_CALLBACK(this, GSOCK_INPUT);
1776 }
1777 else
1778 {
1779 if (m_server && m_stream)
1780 {
1781 CALL_CALLBACK(this, GSOCK_CONNECTION);
1782 }
1783 else if (num == 0)
1784 {
1785 if (m_stream)
1786 {
1787 /* graceful shutdown */
1788 CALL_CALLBACK(this, GSOCK_LOST);
1789 Shutdown();
1790 }
1791 else
1792 {
1793 /* Empty datagram received */
1794 CALL_CALLBACK(this, GSOCK_INPUT);
1795 }
1796 }
1797 else
1798 {
1799 /* Do not throw a lost event in cases where the socket isn't really lost */
1800 if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR))
1801 {
1802 CALL_CALLBACK(this, GSOCK_INPUT);
1803 }
1804 else
1805 {
1806 CALL_CALLBACK(this, GSOCK_LOST);
1807 Shutdown();
1808 }
1809 }
1810 }
1811 }
1812
1813 void GSocket::Detected_Write()
1814 {
1815 /* If we have already detected a LOST event, then don't try
1816 * to do any further processing.
1817 */
1818 if ((m_detected & GSOCK_LOST_FLAG) != 0)
1819 {
1820 m_establishing = false;
1821
1822 CALL_CALLBACK(this, GSOCK_LOST);
1823 Shutdown();
1824 return;
1825 }
1826
1827 if (m_establishing && !m_server)
1828 {
1829 int error;
1830 SOCKOPTLEN_T len = sizeof(error);
1831
1832 m_establishing = false;
1833
1834 getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
1835
1836 if (error)
1837 {
1838 CALL_CALLBACK(this, GSOCK_LOST);
1839 Shutdown();
1840 }
1841 else
1842 {
1843 CALL_CALLBACK(this, GSOCK_CONNECTION);
1844 /* We have to fire this event by hand because CONNECTION (for clients)
1845 * and OUTPUT are internally the same and we just disabled CONNECTION
1846 * events with the above macro.
1847 */
1848 CALL_CALLBACK(this, GSOCK_OUTPUT);
1849 }
1850 }
1851 else
1852 {
1853 CALL_CALLBACK(this, GSOCK_OUTPUT);
1854 }
1855 }
1856
1857 /* Compatibility functions for GSocket */
1858 GSocket *GSocket_new(void)
1859 {
1860 GSocket *newsocket = new GSocket();
1861 if (newsocket->IsOk())
1862 return newsocket;
1863
1864 delete newsocket;
1865
1866 return NULL;
1867 }
1868
1869 /*
1870 * -------------------------------------------------------------------------
1871 * GAddress
1872 * -------------------------------------------------------------------------
1873 */
1874
1875 /* CHECK_ADDRESS verifies that the current address family is either
1876 * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
1877 * initalizes it to be a GSOCK_*family*. In other cases, it returns
1878 * an appropiate error code.
1879 *
1880 * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
1881 */
1882 #define CHECK_ADDRESS(address, family) \
1883 { \
1884 if (address->m_family == GSOCK_NOFAMILY) \
1885 if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \
1886 return address->m_error; \
1887 if (address->m_family != GSOCK_##family) \
1888 { \
1889 address->m_error = GSOCK_INVADDR; \
1890 return GSOCK_INVADDR; \
1891 } \
1892 }
1893
1894 #define CHECK_ADDRESS_RETVAL(address, family, retval) \
1895 { \
1896 if (address->m_family == GSOCK_NOFAMILY) \
1897 if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \
1898 return retval; \
1899 if (address->m_family != GSOCK_##family) \
1900 { \
1901 address->m_error = GSOCK_INVADDR; \
1902 return retval; \
1903 } \
1904 }
1905
1906
1907 GAddress *GAddress_new(void)
1908 {
1909 GAddress *address;
1910
1911 if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1912 return NULL;
1913
1914 address->m_family = GSOCK_NOFAMILY;
1915 address->m_addr = NULL;
1916 address->m_len = 0;
1917
1918 return address;
1919 }
1920
1921 GAddress *GAddress_copy(GAddress *address)
1922 {
1923 GAddress *addr2;
1924
1925 assert(address != NULL);
1926
1927 if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
1928 return NULL;
1929
1930 memcpy(addr2, address, sizeof(GAddress));
1931
1932 if (address->m_addr && address->m_len > 0)
1933 {
1934 addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len);
1935 if (addr2->m_addr == NULL)
1936 {
1937 free(addr2);
1938 return NULL;
1939 }
1940 memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
1941 }
1942
1943 return addr2;
1944 }
1945
1946 void GAddress_destroy(GAddress *address)
1947 {
1948 assert(address != NULL);
1949
1950 if (address->m_addr)
1951 free(address->m_addr);
1952
1953 free(address);
1954 }
1955
1956 void GAddress_SetFamily(GAddress *address, GAddressType type)
1957 {
1958 assert(address != NULL);
1959
1960 address->m_family = type;
1961 }
1962
1963 GAddressType GAddress_GetFamily(GAddress *address)
1964 {
1965 assert(address != NULL);
1966
1967 return address->m_family;
1968 }
1969
1970 GSocketError _GAddress_translate_from(GAddress *address,
1971 struct sockaddr *addr, int len)
1972 {
1973 address->m_realfamily = addr->sa_family;
1974 switch (addr->sa_family)
1975 {
1976 case AF_INET:
1977 address->m_family = GSOCK_INET;
1978 break;
1979 case AF_UNIX:
1980 address->m_family = GSOCK_UNIX;
1981 break;
1982 #if wxUSE_IPV6
1983 case AF_INET6:
1984 address->m_family = GSOCK_INET6;
1985 break;
1986 #endif // wxUSE_IPV6
1987 default:
1988 {
1989 address->m_error = GSOCK_INVOP;
1990 return GSOCK_INVOP;
1991 }
1992 }
1993
1994 if (address->m_addr)
1995 free(address->m_addr);
1996
1997 address->m_len = len;
1998 address->m_addr = (struct sockaddr *)malloc(len);
1999
2000 if (address->m_addr == NULL)
2001 {
2002 address->m_error = GSOCK_MEMERR;
2003 return GSOCK_MEMERR;
2004 }
2005
2006 memcpy(address->m_addr, addr, len);
2007
2008 return GSOCK_NOERROR;
2009 }
2010
2011 GSocketError _GAddress_translate_to(GAddress *address,
2012 struct sockaddr **addr, int *len)
2013 {
2014 if (!address->m_addr)
2015 {
2016 address->m_error = GSOCK_INVADDR;
2017 return GSOCK_INVADDR;
2018 }
2019
2020 *len = address->m_len;
2021 *addr = (struct sockaddr *)malloc(address->m_len);
2022 if (*addr == NULL)
2023 {
2024 address->m_error = GSOCK_MEMERR;
2025 return GSOCK_MEMERR;
2026 }
2027
2028 memcpy(*addr, address->m_addr, address->m_len);
2029 return GSOCK_NOERROR;
2030 }
2031
2032 /*
2033 * -------------------------------------------------------------------------
2034 * Internet address family
2035 * -------------------------------------------------------------------------
2036 */
2037
2038 GSocketError _GAddress_Init_INET(GAddress *address)
2039 {
2040 address->m_len = sizeof(struct sockaddr_in);
2041 address->m_addr = (struct sockaddr *) malloc(address->m_len);
2042 if (address->m_addr == NULL)
2043 {
2044 address->m_error = GSOCK_MEMERR;
2045 return GSOCK_MEMERR;
2046 }
2047
2048 address->m_family = GSOCK_INET;
2049 address->m_realfamily = PF_INET;
2050 ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
2051 ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
2052
2053 return GSOCK_NOERROR;
2054 }
2055
2056 GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
2057 {
2058 struct hostent *he;
2059 struct in_addr *addr;
2060
2061 assert(address != NULL);
2062
2063 CHECK_ADDRESS(address, INET);
2064
2065 addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
2066
2067 /* If it is a numeric host name, convert it now */
2068 #if defined(HAVE_INET_ATON)
2069 if (inet_aton(hostname, addr) == 0)
2070 {
2071 #elif defined(HAVE_INET_ADDR)
2072 if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 )
2073 {
2074 #else
2075 /* Use gethostbyname by default */
2076 #ifndef __WXMAC__
2077 int val = 1; /* VA doesn't like constants in conditional expressions */
2078 if (val)
2079 #endif
2080 {
2081 #endif
2082 struct in_addr *array_addr;
2083
2084 /* It is a real name, we solve it */
2085 struct hostent h;
2086 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
2087 struct hostent_data buffer;
2088 #else
2089 char buffer[1024];
2090 #endif
2091 int err;
2092 he = wxGethostbyname_r(hostname, &h, (void*)&buffer, sizeof(buffer), &err);
2093 if (he == NULL)
2094 {
2095 /* Reset to invalid address */
2096 addr->s_addr = INADDR_NONE;
2097 address->m_error = GSOCK_NOHOST;
2098 return GSOCK_NOHOST;
2099 }
2100
2101 array_addr = (struct in_addr *) *(he->h_addr_list);
2102 addr->s_addr = array_addr[0].s_addr;
2103 }
2104
2105 return GSOCK_NOERROR;
2106 }
2107
2108
2109 GSocketError GAddress_INET_SetBroadcastAddress(GAddress *address)
2110 {
2111 return GAddress_INET_SetHostAddress(address, INADDR_BROADCAST);
2112 }
2113
2114 GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
2115 {
2116 return GAddress_INET_SetHostAddress(address, INADDR_ANY);
2117 }
2118
2119 GSocketError GAddress_INET_SetHostAddress(GAddress *address,
2120 unsigned long hostaddr)
2121 {
2122 struct in_addr *addr;
2123
2124 assert(address != NULL);
2125
2126 CHECK_ADDRESS(address, INET);
2127
2128 addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
2129 addr->s_addr = htonl(hostaddr);
2130
2131 return GSOCK_NOERROR;
2132 }
2133
2134 GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
2135 const char *protocol)
2136 {
2137 struct servent *se;
2138 struct sockaddr_in *addr;
2139
2140 assert(address != NULL);
2141 CHECK_ADDRESS(address, INET);
2142
2143 if (!port)
2144 {
2145 address->m_error = GSOCK_INVPORT;
2146 return GSOCK_INVPORT;
2147 }
2148
2149 #if defined(HAVE_FUNC_GETSERVBYNAME_R_4)
2150 struct servent_data buffer;
2151 #else
2152 char buffer[1024];
2153 #endif
2154 struct servent serv;
2155 se = wxGetservbyname_r(port, protocol, &serv,
2156 (void*)&buffer, sizeof(buffer));
2157 if (!se)
2158 {
2159 /* the cast to int suppresses compiler warnings about subscript having the
2160 type char */
2161 if (isdigit((int)port[0]))
2162 {
2163 int port_int;
2164
2165 port_int = atoi(port);
2166 addr = (struct sockaddr_in *)address->m_addr;
2167 addr->sin_port = htons(port_int);
2168 return GSOCK_NOERROR;
2169 }
2170
2171 address->m_error = GSOCK_INVPORT;
2172 return GSOCK_INVPORT;
2173 }
2174
2175 addr = (struct sockaddr_in *)address->m_addr;
2176 addr->sin_port = se->s_port;
2177
2178 return GSOCK_NOERROR;
2179 }
2180
2181 GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
2182 {
2183 struct sockaddr_in *addr;
2184
2185 assert(address != NULL);
2186 CHECK_ADDRESS(address, INET);
2187
2188 addr = (struct sockaddr_in *)address->m_addr;
2189 addr->sin_port = htons(port);
2190
2191 return GSOCK_NOERROR;
2192 }
2193
2194 GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
2195 {
2196 struct hostent *he;
2197 char *addr_buf;
2198 struct sockaddr_in *addr;
2199
2200 assert(address != NULL);
2201 CHECK_ADDRESS(address, INET);
2202
2203 addr = (struct sockaddr_in *)address->m_addr;
2204 addr_buf = (char *)&(addr->sin_addr);
2205
2206 struct hostent temphost;
2207 #if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
2208 struct hostent_data buffer;
2209 #else
2210 char buffer[1024];
2211 #endif
2212 int err;
2213 he = wxGethostbyaddr_r(addr_buf, sizeof(addr->sin_addr), AF_INET, &temphost,
2214 (void*)&buffer, sizeof(buffer), &err);
2215 if (he == NULL)
2216 {
2217 address->m_error = GSOCK_NOHOST;
2218 return GSOCK_NOHOST;
2219 }
2220
2221 strncpy(hostname, he->h_name, sbuf);
2222
2223 return GSOCK_NOERROR;
2224 }
2225
2226 unsigned long GAddress_INET_GetHostAddress(GAddress *address)
2227 {
2228 struct sockaddr_in *addr;
2229
2230 assert(address != NULL);
2231 CHECK_ADDRESS_RETVAL(address, INET, 0);
2232
2233 addr = (struct sockaddr_in *)address->m_addr;
2234
2235 return ntohl(addr->sin_addr.s_addr);
2236 }
2237
2238 unsigned short GAddress_INET_GetPort(GAddress *address)
2239 {
2240 struct sockaddr_in *addr;
2241
2242 assert(address != NULL);
2243 CHECK_ADDRESS_RETVAL(address, INET, 0);
2244
2245 addr = (struct sockaddr_in *)address->m_addr;
2246 return ntohs(addr->sin_port);
2247 }
2248
2249 #if wxUSE_IPV6
2250 /*
2251 * -------------------------------------------------------------------------
2252 * Internet IPv6 address family
2253 * -------------------------------------------------------------------------
2254 */
2255
2256 GSocketError _GAddress_Init_INET6(GAddress *address)
2257 {
2258 struct in6_addr any_address = IN6ADDR_ANY_INIT;
2259 address->m_len = sizeof(struct sockaddr_in6);
2260 address->m_addr = (struct sockaddr *) malloc(address->m_len);
2261 if (address->m_addr == NULL)
2262 {
2263 address->m_error = GSOCK_MEMERR;
2264 return GSOCK_MEMERR;
2265 }
2266 memset(address->m_addr,0,address->m_len);
2267
2268 address->m_family = GSOCK_INET6;
2269 address->m_realfamily = AF_INET6;
2270 ((struct sockaddr_in6 *)address->m_addr)->sin6_family = AF_INET6;
2271 ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = any_address;
2272
2273 return GSOCK_NOERROR;
2274 }
2275
2276 GSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname)
2277 {
2278 assert(address != NULL);
2279 CHECK_ADDRESS(address, INET6);
2280
2281 addrinfo hints;
2282 memset( & hints, 0, sizeof( hints ) );
2283 hints.ai_family = AF_INET6;
2284 addrinfo * info = 0;
2285 if ( getaddrinfo( hostname, "0", & hints, & info ) || ! info )
2286 {
2287 address->m_error = GSOCK_NOHOST;
2288 return GSOCK_NOHOST;
2289 }
2290
2291 memcpy( address->m_addr, info->ai_addr, info->ai_addrlen );
2292 freeaddrinfo( info );
2293 return GSOCK_NOERROR;
2294 }
2295
2296 GSocketError GAddress_INET6_SetAnyAddress(GAddress *address)
2297 {
2298 assert(address != NULL);
2299
2300 CHECK_ADDRESS(address, INET6);
2301
2302 struct in6_addr addr;
2303 memset( & addr, 0, sizeof( addr ) );
2304 return GAddress_INET6_SetHostAddress(address, addr);
2305 }
2306 GSocketError GAddress_INET6_SetHostAddress(GAddress *address,
2307 struct in6_addr hostaddr)
2308 {
2309 assert(address != NULL);
2310
2311 CHECK_ADDRESS(address, INET6);
2312
2313 ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = hostaddr;
2314
2315 return GSOCK_NOERROR;
2316 }
2317
2318 GSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port,
2319 const char *protocol)
2320 {
2321 struct servent *se;
2322 struct sockaddr_in6 *addr;
2323
2324 assert(address != NULL);
2325 CHECK_ADDRESS(address, INET6);
2326
2327 if (!port)
2328 {
2329 address->m_error = GSOCK_INVPORT;
2330 return GSOCK_INVPORT;
2331 }
2332
2333 se = getservbyname(port, protocol);
2334 if (!se)
2335 {
2336 if (isdigit(port[0]))
2337 {
2338 int port_int;
2339
2340 port_int = atoi(port);
2341 addr = (struct sockaddr_in6 *)address->m_addr;
2342 addr->sin6_port = htons((u_short) port_int);
2343 return GSOCK_NOERROR;
2344 }
2345
2346 address->m_error = GSOCK_INVPORT;
2347 return GSOCK_INVPORT;
2348 }
2349
2350 addr = (struct sockaddr_in6 *)address->m_addr;
2351 addr->sin6_port = se->s_port;
2352
2353 return GSOCK_NOERROR;
2354 }
2355
2356 GSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port)
2357 {
2358 struct sockaddr_in6 *addr;
2359
2360 assert(address != NULL);
2361 CHECK_ADDRESS(address, INET6);
2362
2363 addr = (struct sockaddr_in6 *)address->m_addr;
2364 addr->sin6_port = htons(port);
2365
2366 return GSOCK_NOERROR;
2367 }
2368
2369 GSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname, size_t sbuf)
2370 {
2371 struct hostent *he;
2372 char *addr_buf;
2373 struct sockaddr_in6 *addr;
2374
2375 assert(address != NULL);
2376 CHECK_ADDRESS(address, INET6);
2377
2378 addr = (struct sockaddr_in6 *)address->m_addr;
2379 addr_buf = (char *)&(addr->sin6_addr);
2380
2381 he = gethostbyaddr(addr_buf, sizeof(addr->sin6_addr), AF_INET6);
2382 if (he == NULL)
2383 {
2384 address->m_error = GSOCK_NOHOST;
2385 return GSOCK_NOHOST;
2386 }
2387
2388 strncpy(hostname, he->h_name, sbuf);
2389
2390 return GSOCK_NOERROR;
2391 }
2392
2393 GSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr)
2394 {
2395 assert(address != NULL);
2396 assert(hostaddr != NULL);
2397 CHECK_ADDRESS_RETVAL(address, INET6, GSOCK_INVADDR);
2398 *hostaddr = ( (struct sockaddr_in6 *)address->m_addr )->sin6_addr;
2399 return GSOCK_NOERROR;
2400 }
2401
2402 unsigned short GAddress_INET6_GetPort(GAddress *address)
2403 {
2404 assert(address != NULL);
2405 CHECK_ADDRESS_RETVAL(address, INET6, 0);
2406
2407 return ntohs( ((struct sockaddr_in6 *)address->m_addr)->sin6_port );
2408 }
2409
2410 #endif // wxUSE_IPV6
2411
2412 /*
2413 * -------------------------------------------------------------------------
2414 * Unix address family
2415 * -------------------------------------------------------------------------
2416 */
2417
2418 #ifndef __VISAGECPP__
2419 GSocketError _GAddress_Init_UNIX(GAddress *address)
2420 {
2421 address->m_len = sizeof(struct sockaddr_un);
2422 address->m_addr = (struct sockaddr *)malloc(address->m_len);
2423 if (address->m_addr == NULL)
2424 {
2425 address->m_error = GSOCK_MEMERR;
2426 return GSOCK_MEMERR;
2427 }
2428
2429 address->m_family = GSOCK_UNIX;
2430 address->m_realfamily = PF_UNIX;
2431 ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX;
2432 ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0;
2433
2434 return GSOCK_NOERROR;
2435 }
2436
2437 #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0]))
2438
2439 GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
2440 {
2441 struct sockaddr_un *addr;
2442
2443 assert(address != NULL);
2444
2445 CHECK_ADDRESS(address, UNIX);
2446
2447 addr = ((struct sockaddr_un *)address->m_addr);
2448 strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN);
2449 addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0';
2450
2451 return GSOCK_NOERROR;
2452 }
2453
2454 GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
2455 {
2456 struct sockaddr_un *addr;
2457
2458 assert(address != NULL);
2459 CHECK_ADDRESS(address, UNIX);
2460
2461 addr = (struct sockaddr_un *)address->m_addr;
2462
2463 strncpy(path, addr->sun_path, sbuf);
2464
2465 return GSOCK_NOERROR;
2466 }
2467 #endif /* !defined(__VISAGECPP__) */
2468 #endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
wxWidgets (Impactor)