1 /* Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation
3 This file is part of libgcj.
5 This software is copyrighted work licensed under the terms of the
6 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
12 #ifdef HAVE_SYS_IOCTL_H
13 #define BSD_COMP /* Get FIONREAD on Solaris2. */
14 #include <sys/ioctl.h>
17 // Pick up FIONREAD on Solaris 2.5.
18 #ifdef HAVE_SYS_FILIO_H
19 #include <sys/filio.h>
22 #include <netinet/in.h>
23 #include <netinet/tcp.h>
28 // Needed for bzero, implicitly used by FD_ZERO on IRIX 5.2
33 #include <gcj/javaprims.h>
34 #include <gnu/java/net/PlainSocketImpl.h>
35 #include <gnu/java/net/PlainSocketImpl$SocketInputStream.h>
36 #include <gnu/java/net/PlainSocketImpl$SocketOutputStream.h>
37 #include <java/io/IOException.h>
38 #include <java/io/InterruptedIOException.h>
39 #include <java/net/BindException.h>
40 #include <java/net/ConnectException.h>
41 #include <java/net/InetAddress.h>
42 #include <java/net/InetSocketAddress.h>
43 #include <java/net/SocketException.h>
44 #include <java/net/SocketTimeoutException.h>
45 #include <java/lang/InternalError.h>
46 #include <java/lang/Object.h>
47 #include <java/lang/Boolean.h>
48 #include <java/lang/Class.h>
49 #include <java/lang/Integer.h>
50 #include <java/lang/Thread.h>
51 #include <java/lang/NullPointerException.h>
52 #include <java/lang/ArrayIndexOutOfBoundsException.h>
53 #include <java/lang/IllegalArgumentException.h>
54 #include <java/net/UnknownHostException.h>
58 struct sockaddr_in address;
60 struct sockaddr_in6 address6;
65 gnu::java::net::PlainSocketImpl::create (jboolean stream)
67 int sock = _Jv_socket (AF_INET, stream ? SOCK_STREAM : SOCK_DGRAM, 0);
71 char* strerr = strerror (errno);
72 throw new ::java::io::IOException (JvNewStringUTF (strerr));
75 // We use native_fd in place of fd here. From leaving fd null we avoid
76 // the double close problem in FileDescriptor.finalize.
81 gnu::java::net::PlainSocketImpl::bind (::java::net::InetAddress *host, jint lport)
84 struct sockaddr *ptr = (struct sockaddr *) &u.address;
85 jbyteArray haddress = host->addr;
86 jbyte *bytes = elements (haddress);
87 int len = haddress->length;
90 // The following is needed for OS X/PPC, otherwise bind() fails with an
91 // error. I found the issue and following fix on some mailing list, but
92 // no explanation was given as to why this solved the problem.
93 memset (&u, 0, sizeof (u));
97 u.address.sin_family = AF_INET;
100 memcpy (&u.address.sin_addr, bytes, len);
102 u.address.sin_addr.s_addr = htonl (INADDR_ANY);
104 len = sizeof (struct sockaddr_in);
105 u.address.sin_port = htons (lport);
110 u.address6.sin6_family = AF_INET6;
111 memcpy (&u.address6.sin6_addr, bytes, len);
112 len = sizeof (struct sockaddr_in6);
113 u.address6.sin6_port = htons (lport);
117 throw new ::java::net::SocketException (JvNewStringUTF ("invalid length"));
119 // Enable SO_REUSEADDR, so that servers can reuse ports left in TIME_WAIT.
120 ::setsockopt(native_fd, SOL_SOCKET, SO_REUSEADDR, (char *) &i, sizeof(i));
122 if (_Jv_bind (native_fd, ptr, len) == 0)
124 socklen_t addrlen = sizeof(u);
128 else if (::getsockname (native_fd, (sockaddr*) &u, &addrlen) == 0)
129 localport = ntohs (u.address.sin_port);
137 char* strerr = strerror (errno);
138 throw new ::java::net::BindException (JvNewStringUTF (strerr));
142 gnu::java::net::PlainSocketImpl::connect (::java::net::SocketAddress *addr,
145 ::java::net::InetSocketAddress *tmp = (::java::net::InetSocketAddress*) addr;
146 ::java::net::InetAddress *host = tmp->getAddress();
148 throw new ::java::net::UnknownHostException(tmp->toString());
150 jint rport = tmp->getPort();
152 // Set the SocketImpl's address and port fields before we try to
153 // connect. Note that the fact that these are set doesn't imply
154 // that we're actually connected to anything. We need to record
155 // this data before we attempt the connect, since non-blocking
156 // SocketChannels will use this and almost certainly throw timeout
162 socklen_t addrlen = sizeof(u);
163 jbyteArray haddress = host->addr;
164 jbyte *bytes = elements (haddress);
165 int len = haddress->length;
166 struct sockaddr *ptr = (struct sockaddr *) &u.address;
169 u.address.sin_family = AF_INET;
170 memcpy (&u.address.sin_addr, bytes, len);
171 len = sizeof (struct sockaddr_in);
172 u.address.sin_port = htons (rport);
177 u.address6.sin6_family = AF_INET6;
178 memcpy (&u.address6.sin6_addr, bytes, len);
179 len = sizeof (struct sockaddr_in6);
180 u.address6.sin6_port = htons (rport);
184 throw new ::java::net::SocketException (JvNewStringUTF ("invalid length"));
188 int flags = ::fcntl (native_fd, F_GETFL);
189 ::fcntl (native_fd, F_SETFL, flags | O_NONBLOCK);
191 if ((_Jv_connect (native_fd, ptr, len) != 0) && (errno != EINPROGRESS))
197 FD_SET(native_fd, &fset);
198 tv.tv_sec = timeout / 1000;
199 tv.tv_usec = (timeout % 1000) * 1000;
202 if ((retval = _Jv_select (native_fd + 1, &fset, &fset, NULL, &tv)) < 0)
204 else if (retval == 0)
205 throw new ::java::net::SocketTimeoutException
206 (JvNewStringUTF ("Connect timed out"));
207 // Set the socket back into a blocking state.
208 ::fcntl (native_fd, F_SETFL, flags);
212 if (_Jv_connect (native_fd, ptr, len) != 0)
216 // A bind may not have been done on this socket; if so, set localport now.
219 if (::getsockname (native_fd, (sockaddr*) &u, &addrlen) == 0)
220 localport = ntohs (u.address.sin_port);
228 char* strerr = strerror (errno);
229 throw new ::java::net::ConnectException (JvNewStringUTF (strerr));
233 gnu::java::net::PlainSocketImpl::listen (jint backlog)
235 if (::listen (native_fd, backlog) != 0)
237 char* strerr = strerror (errno);
238 throw new ::java::io::IOException (JvNewStringUTF (strerr));
243 throw_on_sock_closed (gnu::java::net::PlainSocketImpl *soc_impl)
245 // Avoid races from asynchronous close().
246 JvSynchronize sync (soc_impl);
247 if (soc_impl->native_fd == -1)
249 using namespace java::net;
250 // Socket was closed.
251 SocketException *se =
252 new SocketException (JvNewStringUTF ("Socket Closed"));
258 gnu::java::net::PlainSocketImpl::accept (gnu::java::net::PlainSocketImpl *s)
261 socklen_t addrlen = sizeof(u);
264 // Do timeouts via select since SO_RCVTIMEO is not always available.
265 if (timeout > 0 && native_fd >= 0 && native_fd < FD_SETSIZE)
270 FD_SET(native_fd, &fset);
271 tv.tv_sec = timeout / 1000;
272 tv.tv_usec = (timeout % 1000) * 1000;
274 if ((retval = _Jv_select (native_fd + 1, &fset, &fset, NULL, &tv)) < 0)
276 else if (retval == 0)
277 throw new ::java::net::SocketTimeoutException (
278 JvNewStringUTF("Accept timed out"));
281 new_socket = _Jv_accept (native_fd, (sockaddr*) &u, &addrlen);
288 if (u.address.sin_family == AF_INET)
290 raddr = JvNewByteArray (4);
291 memcpy (elements (raddr), &u.address.sin_addr, 4);
292 rport = ntohs (u.address.sin_port);
295 else if (u.address.sin_family == AF_INET6)
297 raddr = JvNewByteArray (16);
298 memcpy (elements (raddr), &u.address6.sin6_addr, 16);
299 rport = ntohs (u.address6.sin6_port);
303 throw new ::java::net::SocketException (JvNewStringUTF ("invalid family"));
305 s->native_fd = new_socket;
306 s->localport = localport;
307 s->address = ::java::net::InetAddress::getByAddress (raddr);
312 char* strerr = strerror (errno);
313 throw_on_sock_closed (this);
314 throw new ::java::io::IOException (JvNewStringUTF (strerr));
317 // Close(shutdown) the socket.
319 gnu::java::net::PlainSocketImpl::close()
321 // Avoid races from asynchronous finalization.
322 JvSynchronize sync (this);
324 // Should we use shutdown here? Yes.
325 // How would that effect so_linger? Uncertain.
326 ::shutdown (native_fd, 2);
327 // Ignore errors in shutdown as we are closing and all the same
328 // errors are handled in the close.
329 int res = _Jv_close (native_fd);
333 // These three errors are not errors according to tests performed
334 // on the reference implementation.
335 if (errno != ENOTCONN && errno != ECONNRESET && errno != EBADF)
336 throw new ::java::io::IOException (JvNewStringUTF (strerror (errno)));
338 // Safe place to reset the file pointer.
344 write_helper (jint native_fd, jbyte *bytes, jint len);
346 // Write a byte to the socket.
348 gnu::java::net::PlainSocketImpl$SocketOutputStream::write(jint b)
350 jbyte data = (jbyte) b;
351 write_helper (this$0->native_fd, &data, 1);
354 // Write some bytes to the socket.
356 gnu::java::net::PlainSocketImpl$SocketOutputStream::write(jbyteArray b, jint offset, jint len)
359 throw new ::java::lang::NullPointerException;
360 if (offset < 0 || len < 0 || offset + len > JvGetArrayLength (b))
361 throw new ::java::lang::ArrayIndexOutOfBoundsException;
363 write_helper (this$0->native_fd, elements (b) + offset, len);
367 write_helper(jint native_fd, jbyte *bytes, jint len)
373 int r = _Jv_write (native_fd, bytes, len);
377 if (::java::lang::Thread::interrupted())
379 ::java::io::InterruptedIOException *iioe
380 = new ::java::io::InterruptedIOException
381 (JvNewStringLatin1 (strerror (errno)));
382 iioe->bytesTransferred = written;
385 // Some errors should not cause exceptions.
386 if (errno != ENOTCONN && errno != ECONNRESET && errno != EBADF)
387 throw new ::java::io::IOException (JvNewStringUTF (strerror (errno)));
398 gnu::java::net::PlainSocketImpl::sendUrgentData (jint)
400 throw new ::java::net::SocketException (JvNewStringLatin1 (
401 "PlainSocketImpl: sending of urgent data not supported by this socket"));
405 read_helper (gnu::java::net::PlainSocketImpl *soc_impl,
406 jbyte *bytes, jint count);
408 // Read a single byte from the socket.
410 gnu::java::net::PlainSocketImpl$SocketInputStream::read(void)
414 if (read_helper (this$0, &data, 1) == 1)
420 // Read count bytes into the buffer, starting at offset.
422 gnu::java::net::PlainSocketImpl$SocketInputStream::read(jbyteArray buffer,
427 throw new ::java::lang::NullPointerException;
429 jsize bsize = JvGetArrayLength (buffer);
431 if (offset < 0 || count < 0 || offset + count > bsize)
432 throw new ::java::lang::ArrayIndexOutOfBoundsException;
434 return read_helper (this$0, elements (buffer) + offset, count);
438 read_helper (gnu::java::net::PlainSocketImpl *soc_impl,
439 jbyte *bytes, jint count)
441 // If zero bytes were requested, short circuit so that recv
442 // doesn't signal EOF.
446 // Do timeouts via select.
447 if (soc_impl->timeout > 0
448 && soc_impl->native_fd >= 0
449 && soc_impl->native_fd < FD_SETSIZE)
451 // Create the file descriptor set.
454 FD_SET (soc_impl->native_fd, &read_fds);
455 // Create the timeout struct based on our internal timeout value.
456 struct timeval timeout_value;
457 timeout_value.tv_sec = soc_impl->timeout / 1000;
458 timeout_value.tv_usec =(soc_impl->timeout % 1000) * 1000;
459 // Select on the fds.
461 _Jv_select (soc_impl->native_fd + 1,
462 &read_fds, NULL, NULL, &timeout_value);
463 // We're only interested in the 0 return.
464 // error returns still require us to try to read
465 // the socket to see what happened.
468 ::java::net::SocketTimeoutException *timeoutException =
469 new ::java::net::SocketTimeoutException
470 (JvNewStringUTF ("Read timed out"));
471 throw timeoutException;
476 int r = ::recv (soc_impl->native_fd, (char *) bytes, count, 0);
480 throw_on_sock_closed (soc_impl);
484 if (::java::lang::Thread::interrupted())
486 ::java::io::InterruptedIOException *iioe =
487 new ::java::io::InterruptedIOException
488 (JvNewStringUTF ("Read interrupted"));
489 iioe->bytesTransferred = r == -1 ? 0 : r;
494 throw_on_sock_closed (soc_impl);
495 // Some errors cause us to return end of stream...
496 if (errno == ENOTCONN)
499 // Other errors need to be signalled.
500 throw new ::java::io::IOException (JvNewStringUTF (strerror (errno)));
506 // How many bytes are available?
508 gnu::java::net::PlainSocketImpl::available(void)
510 #if defined(FIONREAD) || defined(HAVE_SELECT)
513 bool num_set = false;
515 #if defined(FIONREAD)
516 r = ::ioctl (native_fd, FIONREAD, &num);
518 if (r == -1 && errno == ENOTTY)
520 // If the ioctl doesn't work, we don't care.
526 #elif defined(HAVE_SELECT)
537 throw new ::java::io::IOException(JvNewStringUTF(strerror(errno)));
540 // If we didn't get anything we can use select.
542 #if defined(HAVE_SELECT)
544 if (! num_set && native_fd >= 0 && native_fd < FD_SETSIZE)
548 FD_SET (native_fd, &rd);
552 r = _Jv_select (native_fd + 1, &rd, NULL, NULL, &tv);
555 num = r == 0 ? 0 : 1;
557 #endif /* HAVE_SELECT */
561 throw new ::java::io::IOException (JvNewStringUTF ("unimplemented"));
566 gnu::java::net::PlainSocketImpl::setOption (jint optID, ::java::lang::Object *value)
569 socklen_t val_len = sizeof (val);
572 throw new ::java::net::SocketException (JvNewStringUTF ("Socket closed"));
574 if (_Jv_IsInstanceOf (value, &::java::lang::Boolean::class$))
576 ::java::lang::Boolean *boolobj =
577 static_cast< ::java::lang::Boolean *> (value);
578 if (boolobj->booleanValue())
582 if (optID == _Jv_SO_LINGER_)
588 else if (_Jv_IsInstanceOf (value, &::java::lang::Integer::class$))
590 ::java::lang::Integer *intobj =
591 static_cast< ::java::lang::Integer *> (value);
592 val = (int) intobj->intValue();
596 throw new ::java::lang::IllegalArgumentException (
597 JvNewStringLatin1 ("`value' must be Boolean or Integer"));
602 case _Jv_TCP_NODELAY_ :
604 if (::setsockopt (native_fd, IPPROTO_TCP, TCP_NODELAY, (char *) &val,
608 throw new ::java::lang::InternalError
609 (JvNewStringUTF ("TCP_NODELAY not supported"));
610 #endif /* TCP_NODELAY */
613 case _Jv_SO_KEEPALIVE_ :
614 if (::setsockopt (native_fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &val,
619 case _Jv_SO_BROADCAST_ :
620 throw new ::java::net::SocketException
621 (JvNewStringUTF ("SO_BROADCAST not valid for TCP"));
624 case _Jv_SO_OOBINLINE_ :
625 if (::setsockopt (native_fd, SOL_SOCKET, SO_OOBINLINE, (char *) &val,
630 case _Jv_SO_LINGER_ :
633 l_val.l_onoff = (val != -1);
634 l_val.l_linger = val;
636 if (::setsockopt (native_fd, SOL_SOCKET, SO_LINGER, (char *) &l_val,
640 throw new ::java::lang::InternalError (
641 JvNewStringUTF ("SO_LINGER not supported"));
642 #endif /* SO_LINGER */
645 case _Jv_SO_SNDBUF_ :
646 case _Jv_SO_RCVBUF_ :
647 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
649 optID == _Jv_SO_SNDBUF_ ? opt = SO_SNDBUF : opt = SO_RCVBUF;
650 if (::setsockopt (native_fd, SOL_SOCKET, opt, (char *) &val, val_len) != 0)
653 throw new ::java::lang::InternalError (
654 JvNewStringUTF ("SO_RCVBUF/SO_SNDBUF not supported"));
658 case _Jv_SO_BINDADDR_ :
659 throw new ::java::net::SocketException (
660 JvNewStringUTF ("SO_BINDADDR: read only option"));
663 case _Jv_IP_MULTICAST_IF_ :
664 throw new ::java::net::SocketException (
665 JvNewStringUTF ("IP_MULTICAST_IF: not valid for TCP"));
668 case _Jv_IP_MULTICAST_IF2_ :
669 throw new ::java::net::SocketException (
670 JvNewStringUTF ("IP_MULTICAST_IF2: not valid for TCP"));
673 case _Jv_IP_MULTICAST_LOOP_ :
674 throw new ::java::net::SocketException (
675 JvNewStringUTF ("IP_MULTICAST_LOOP: not valid for TCP"));
679 if (::setsockopt (native_fd, SOL_SOCKET, IP_TOS, (char *) &val,
684 case _Jv_SO_REUSEADDR_ :
685 #if defined(SO_REUSEADDR)
686 if (::setsockopt (native_fd, SOL_SOCKET, SO_REUSEADDR, (char *) &val,
691 throw new ::java::lang::InternalError (
692 JvNewStringUTF ("SO_REUSEADDR not supported"));
695 case _Jv_SO_TIMEOUT_ :
704 char* strerr = strerror (errno);
705 throw new ::java::net::SocketException (JvNewStringUTF (strerr));
708 ::java::lang::Object *
709 gnu::java::net::PlainSocketImpl::getOption (jint optID)
712 socklen_t val_len = sizeof(val);
714 socklen_t addrlen = sizeof(u);
716 socklen_t l_val_len = sizeof(l_val);
721 case _Jv_TCP_NODELAY_ :
722 if (::getsockopt (native_fd, IPPROTO_TCP, TCP_NODELAY, (char *) &val,
726 return new ::java::lang::Boolean (val != 0);
728 throw new ::java::lang::InternalError
729 (JvNewStringUTF ("TCP_NODELAY not supported"));
733 case _Jv_SO_LINGER_ :
735 if (::getsockopt (native_fd, SOL_SOCKET, SO_LINGER, (char *) &l_val,
740 return new ::java::lang::Integer (l_val.l_linger);
742 return new ::java::lang::Boolean ((jboolean)false);
744 throw new ::java::lang::InternalError
745 (JvNewStringUTF ("SO_LINGER not supported"));
749 case _Jv_SO_KEEPALIVE_ :
750 if (::getsockopt (native_fd, SOL_SOCKET, SO_KEEPALIVE, (char *) &val,
754 return new ::java::lang::Boolean (val != 0);
756 case _Jv_SO_BROADCAST_ :
757 if (::getsockopt (native_fd, SOL_SOCKET, SO_BROADCAST, (char *) &val,
760 return new ::java::lang::Boolean ((jboolean)val);
762 case _Jv_SO_OOBINLINE_ :
763 if (::getsockopt (native_fd, SOL_SOCKET, SO_OOBINLINE, (char *) &val,
766 return new ::java::lang::Boolean ((jboolean)val);
768 case _Jv_SO_RCVBUF_ :
769 case _Jv_SO_SNDBUF_ :
770 #if defined(SO_SNDBUF) && defined(SO_RCVBUF)
772 optID == _Jv_SO_SNDBUF_ ? opt = SO_SNDBUF : opt = SO_RCVBUF;
773 if (::getsockopt (native_fd, SOL_SOCKET, opt, (char *) &val, &val_len) != 0)
776 return new ::java::lang::Integer (val);
778 throw new ::java::lang::InternalError
779 (JvNewStringUTF ("SO_RCVBUF/SO_SNDBUF not supported"));
782 case _Jv_SO_BINDADDR_:
783 // cache the local address
784 if (localAddress == NULL)
788 if (::getsockname (native_fd, (sockaddr*) &u, &addrlen) != 0)
791 if (u.address.sin_family == AF_INET)
793 laddr = JvNewByteArray (4);
794 memcpy (elements (laddr), &u.address.sin_addr, 4);
797 else if (u.address.sin_family == AF_INET6)
799 laddr = JvNewByteArray (16);
800 memcpy (elements (laddr), &u.address6.sin6_addr, 16);
804 throw new ::java::net::SocketException
805 (JvNewStringUTF ("invalid family"));
806 localAddress = ::java::net::InetAddress::getByAddress (laddr);
811 case _Jv_IP_MULTICAST_IF_ :
812 throw new ::java::net::SocketException
813 (JvNewStringUTF ("IP_MULTICAST_IF: not valid for TCP"));
816 case _Jv_IP_MULTICAST_IF2_ :
817 throw new ::java::net::SocketException
818 (JvNewStringUTF ("IP_MULTICAST_IF2: not valid for TCP"));
821 case _Jv_IP_MULTICAST_LOOP_ :
822 throw new ::java::net::SocketException
823 (JvNewStringUTF ("IP_MULTICAST_LOOP: not valid for TCP"));
827 if (::getsockopt (native_fd, SOL_SOCKET, IP_TOS, (char *) &val,
830 return new ::java::lang::Integer (val);
833 case _Jv_SO_REUSEADDR_ :
834 #if defined(SO_REUSEADDR)
835 if (::getsockopt (native_fd, SOL_SOCKET, SO_REUSEADDR, (char *) &val,
839 throw new ::java::lang::InternalError (
840 JvNewStringUTF ("SO_REUSEADDR not supported"));
844 case _Jv_SO_TIMEOUT_ :
845 return new ::java::lang::Integer (timeout);
853 char* strerr = strerror (errno);
854 throw new ::java::net::SocketException (JvNewStringUTF (strerr));
858 gnu::java::net::PlainSocketImpl::shutdownInput (void)
860 if (::shutdown (native_fd, 0))
861 throw new ::java::net::SocketException (JvNewStringUTF (strerror (errno)));
865 gnu::java::net::PlainSocketImpl::shutdownOutput (void)
867 if (::shutdown (native_fd, 1))
868 throw new ::java::net::SocketException (JvNewStringUTF (strerror (errno)));