/* -------------------------------------------------------------------------
- * Project: GSocket (Generic Socket) for WX
- * Name: gsocket.c
- * Authors: David Elliott (C++ conversion, maintainer)
- * Guilhem Lavaux,
- * Guillermo Rodriguez Garcia <guille@iies.es>
- * Purpose: GSocket main Unix and OS/2 file
- * Licence: The wxWindows licence
- * CVSID: $Id$
+ * Project: GSocket (Generic Socket) for WX
+ * Name: gsocket.c
+ * Copyright: (c) Guilhem Lavaux
+ * Licence: wxWindows Licence
+ * Authors: David Elliott (C++ conversion, maintainer)
+ * Guilhem Lavaux,
+ * Guillermo Rodriguez Garcia <guille@iies.es>
+ * Purpose: GSocket main Unix and OS/2 file
+ * Licence: The wxWindows licence
+ * CVSID: $Id$
* -------------------------------------------------------------------------
*/
-/*
- * PLEASE don't put C++ comments here - this is a C source file.
- */
+#if defined(__WATCOMC__)
+#include "wx/wxprec.h"
+#include <errno.h>
+#include <nerrno.h>
+#endif
#ifndef __GSOCKET_STANDALONE__
-#include "wx/setup.h"
+#include "wx/defs.h"
+#include "wx/private/gsocketiohandler.h"
#endif
#if defined(__VISAGECPP__)
-/* Seems to be needed by Visual Age C++, though I don't see how it manages
- to not break on including a C++ header into a plain C source file */
-#include "wx/defs.h"
-#define BSD_SELECT /* use Berkley Sockets select */
+#define BSD_SELECT /* use Berkeley Sockets select */
#endif
#if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
#include <netdb.h>
#include <sys/ioctl.h>
+#ifdef HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+
#ifdef __VMS__
#include <socket.h>
struct sockaddr_un
#ifdef sgi
# include <bstring.h>
#endif
+#ifdef _AIX
+# include <strings.h>
+#endif
#include <signal.h>
-#ifndef SOCKLEN_T
+#ifndef WX_SOCKLEN_T
#ifdef VMS
-# define SOCKLEN_T unsigned int
+# define WX_SOCKLEN_T unsigned int
#else
# ifdef __GLIBC__
# if __GLIBC__ == 2
-# define SOCKLEN_T socklen_t
+# define WX_SOCKLEN_T socklen_t
# endif
+# elif defined(__WXMAC__)
+# define WX_SOCKLEN_T socklen_t
# else
-# define SOCKLEN_T int
+# define WX_SOCKLEN_T int
# endif
#endif
-#else
- /* undefine for OSX - its really an int */
-# ifdef __DARWIN__
-# undef SOCKLEN_T
-# define SOCKLEN_T int
-# endif
#endif /* SOCKLEN_T */
+#ifndef SOCKOPTLEN_T
+#define SOCKOPTLEN_T WX_SOCKLEN_T
+#endif
+
/*
* MSW defines this, Unices don't.
*/
#define INADDR_NONE INADDR_BROADCAST
#endif
-#define MASK_SIGNAL() \
-{ \
- void (*old_handler)(int); \
- \
- old_handler = signal(SIGPIPE, SIG_IGN);
+#if defined(__VISAGECPP__) || defined(__WATCOMC__)
-#define UNMASK_SIGNAL() \
- signal(SIGPIPE, old_handler); \
-}
+ #define MASK_SIGNAL() {
+ #define UNMASK_SIGNAL() }
+
+#else
+ extern "C" { typedef void (*wxSigHandler)(int); }
+
+ #define MASK_SIGNAL() \
+ { \
+ wxSigHandler old_handler = signal(SIGPIPE, SIG_IGN);
+
+ #define UNMASK_SIGNAL() \
+ signal(SIGPIPE, old_handler); \
+ }
+
+#endif
+/* If a SIGPIPE is issued by a socket call on a remotely closed socket,
+ the program will "crash" unless it explicitly handles the SIGPIPE.
+ By using MSG_NOSIGNAL, the SIGPIPE is suppressed. Later, we will
+ use SO_NOSIGPIPE (if available), the BSD equivalent. */
+#ifdef MSG_NOSIGNAL
+# define GSOCKET_MSG_NOSIGNAL MSG_NOSIGNAL
+#else /* MSG_NOSIGNAL not available (FreeBSD including OS X) */
+# define GSOCKET_MSG_NOSIGNAL 0
+#endif /* MSG_NOSIGNAL */
#ifndef __GSOCKET_STANDALONE__
# include "wx/unix/gsockunx.h"
+# include "wx/unix/private.h"
# include "wx/gsocket.h"
+#if wxUSE_THREADS && (defined(HAVE_GETHOSTBYNAME) || defined(HAVE_GETSERVBYNAME))
+# include "wx/thread.h"
+#endif
#else
# include "gsockunx.h"
# include "gsocket.h"
+# ifndef WXUNUSED
+# define WXUNUSED(x)
+# endif
#endif /* __GSOCKET_STANDALONE__ */
+#if defined(HAVE_GETHOSTBYNAME)
+static struct hostent * deepCopyHostent(struct hostent *h,
+ const struct hostent *he,
+ char *buffer, int size, int *err)
+{
+ /* copy old structure */
+ memcpy(h, he, sizeof(struct hostent));
+
+ /* copy name */
+ int len = strlen(h->h_name);
+ if (len > size)
+ {
+ *err = ENOMEM;
+ return NULL;
+ }
+ memcpy(buffer, h->h_name, len);
+ buffer[len] = '\0';
+ h->h_name = buffer;
+
+ /* track position in the buffer */
+ int pos = len + 1;
+
+ /* reuse len to store address length */
+ len = h->h_length;
+
+ /* ensure pointer alignment */
+ unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
+ if(misalign < sizeof(char *))
+ pos += misalign;
+
+ /* leave space for pointer list */
+ char **p = h->h_addr_list, **q;
+ char **h_addr_list = (char **)(buffer + pos);
+ while(*(p++) != 0)
+ pos += sizeof(char *);
+
+ /* copy addresses and fill new pointer list */
+ for (p = h->h_addr_list, q = h_addr_list; *p != 0; p++, q++)
+ {
+ if (size < pos + len)
+ {
+ *err = ENOMEM;
+ return NULL;
+ }
+ memcpy(buffer + pos, *p, len); /* copy content */
+ *q = buffer + pos; /* set copied pointer to copied content */
+ pos += len;
+ }
+ *++q = 0; /* null terminate the pointer list */
+ h->h_addr_list = h_addr_list; /* copy pointer to pointers */
+
+ /* ensure word alignment of pointers */
+ misalign = sizeof(char *) - pos%sizeof(char *);
+ if(misalign < sizeof(char *))
+ pos += misalign;
+
+ /* leave space for pointer list */
+ p = h->h_aliases;
+ char **h_aliases = (char **)(buffer + pos);
+ while(*(p++) != 0)
+ pos += sizeof(char *);
+
+ /* copy aliases and fill new pointer list */
+ for (p = h->h_aliases, q = h_aliases; *p != 0; p++, q++)
+ {
+ len = strlen(*p);
+ if (size <= pos + len)
+ {
+ *err = ENOMEM;
+ return NULL;
+ }
+ memcpy(buffer + pos, *p, len); /* copy content */
+ buffer[pos + len] = '\0';
+ *q = buffer + pos; /* set copied pointer to copied content */
+ pos += len + 1;
+ }
+ *++q = 0; /* null terminate the pointer list */
+ h->h_aliases = h_aliases; /* copy pointer to pointers */
+
+ return h;
+}
+#endif
+
+#if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
+static wxMutex nameLock;
+#endif
+struct hostent * wxGethostbyname_r(const char *hostname, struct hostent *h,
+ void *buffer, int size, int *err)
+
+{
+ struct hostent *he = NULL;
+ *err = 0;
+#if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
+ if (gethostbyname_r(hostname, h, (char*)buffer, size, &he, err))
+ he = NULL;
+#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
+ he = gethostbyname_r(hostname, h, (char*)buffer, size, err);
+#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
+ if (gethostbyname_r(hostname, h, (struct hostent_data*) buffer))
+ {
+ he = NULL;
+ *err = h_errno;
+ }
+ else
+ he = h;
+#elif defined(HAVE_GETHOSTBYNAME)
+#if wxUSE_THREADS
+ wxMutexLocker locker(nameLock);
+#endif
+ he = gethostbyname(hostname);
+ if (!he)
+ *err = h_errno;
+ else
+ he = deepCopyHostent(h, he, (char*)buffer, size, err);
+#endif
+ return he;
+}
+
+#if defined(HAVE_GETHOSTBYNAME) && wxUSE_THREADS
+static wxMutex addrLock;
+#endif
+struct hostent * wxGethostbyaddr_r(const char *addr_buf, int buf_size,
+ int proto, struct hostent *h,
+ void *buffer, int size, int *err)
+{
+ struct hostent *he = NULL;
+ *err = 0;
+#if defined(HAVE_FUNC_GETHOSTBYNAME_R_6)
+ if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
+ (char*)buffer, size, &he, err))
+ he = NULL;
+#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_5)
+ he = gethostbyaddr_r(addr_buf, buf_size, proto, h, (char*)buffer, size, err);
+#elif defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
+ if (gethostbyaddr_r(addr_buf, buf_size, proto, h,
+ (struct hostent_data*) buffer))
+ {
+ he = NULL;
+ *err = h_errno;
+ }
+ else
+ he = h;
+#elif defined(HAVE_GETHOSTBYNAME)
+#if wxUSE_THREADS
+ wxMutexLocker locker(addrLock);
+#endif
+ he = gethostbyaddr(addr_buf, buf_size, proto);
+ if (!he)
+ *err = h_errno;
+ else
+ he = deepCopyHostent(h, he, (char*)buffer, size, err);
+#endif
+ return he;
+}
+
+#if defined(HAVE_GETSERVBYNAME)
+static struct servent * deepCopyServent(struct servent *s,
+ const struct servent *se,
+ char *buffer, int size)
+{
+ /* copy plain old structure */
+ memcpy(s, se, sizeof(struct servent));
+
+ /* copy name */
+ int len = strlen(s->s_name);
+ if (len >= size)
+ {
+ return NULL;
+ }
+ memcpy(buffer, s->s_name, len);
+ buffer[len] = '\0';
+ s->s_name = buffer;
+
+ /* track position in the buffer */
+ int pos = len + 1;
+
+ /* copy protocol */
+ len = strlen(s->s_proto);
+ if (pos + len >= size)
+ {
+ return NULL;
+ }
+ memcpy(buffer + pos, s->s_proto, len);
+ buffer[pos + len] = '\0';
+ s->s_proto = buffer + pos;
+
+ /* track position in the buffer */
+ pos += len + 1;
+
+ /* ensure pointer alignment */
+ unsigned int misalign = sizeof(char *) - pos%sizeof(char *);
+ if(misalign < sizeof(char *))
+ pos += misalign;
+
+ /* leave space for pointer list */
+ char **p = s->s_aliases, **q;
+ char **s_aliases = (char **)(buffer + pos);
+ while(*(p++) != 0)
+ pos += sizeof(char *);
+
+ /* copy addresses and fill new pointer list */
+ for (p = s->s_aliases, q = s_aliases; *p != 0; p++, q++){
+ len = strlen(*p);
+ if (size <= pos + len)
+ {
+ return NULL;
+ }
+ memcpy(buffer + pos, *p, len); /* copy content */
+ buffer[pos + len] = '\0';
+ *q = buffer + pos; /* set copied pointer to copied content */
+ pos += len + 1;
+ }
+ *++q = 0; /* null terminate the pointer list */
+ s->s_aliases = s_aliases; /* copy pointer to pointers */
+ return s;
+}
+#endif
+
+#if defined(HAVE_GETSERVBYNAME) && wxUSE_THREADS
+static wxMutex servLock;
+#endif
+struct servent *wxGetservbyname_r(const char *port, const char *protocol,
+ struct servent *serv, void *buffer, int size)
+{
+ struct servent *se = NULL;
+#if defined(HAVE_FUNC_GETSERVBYNAME_R_6)
+ if (getservbyname_r(port, protocol, serv, (char*)buffer, size, &se))
+ se = NULL;
+#elif defined(HAVE_FUNC_GETSERVBYNAME_R_5)
+ se = getservbyname_r(port, protocol, serv, (char*)buffer, size);
+#elif defined(HAVE_FUNC_GETSERVBYNAME_R_4)
+ if (getservbyname_r(port, protocol, serv, (struct servent_data*) buffer))
+ se = NULL;
+ else
+ se = serv;
+#elif defined(HAVE_GETSERVBYNAME)
+#if wxUSE_THREADS
+ wxMutexLocker locker(servLock);
+#endif
+ se = getservbyname(port, protocol);
+ if (se)
+ se = deepCopyServent(serv, se, (char*)buffer, size);
+#endif
+ return se;
+}
+
/* debugging helpers */
#ifdef __GSOCKET_DEBUG__
# define GSocket_Debug(args) printf args
{}
bool GSocketGUIFunctionsTableNull::CanUseEventLoop()
{ return false; }
-bool GSocketGUIFunctionsTableNull::Init_Socket(GSocket *socket)
+bool GSocketGUIFunctionsTableNull::Init_Socket(GSocket *WXUNUSED(socket))
{ return true; }
-void GSocketGUIFunctionsTableNull::Destroy_Socket(GSocket *socket)
+void GSocketGUIFunctionsTableNull::Destroy_Socket(GSocket *WXUNUSED(socket))
{}
-void GSocketGUIFunctionsTableNull::Install_Callback(GSocket *socket, GSocketEvent event)
+void GSocketGUIFunctionsTableNull::Install_Callback(GSocket *WXUNUSED(socket), GSocketEvent WXUNUSED(event))
{}
-void GSocketGUIFunctionsTableNull::Uninstall_Callback(GSocket *socket, GSocketEvent event)
+void GSocketGUIFunctionsTableNull::Uninstall_Callback(GSocket *WXUNUSED(socket), GSocketEvent WXUNUSED(event))
{}
-void GSocketGUIFunctionsTableNull::Enable_Events(GSocket *socket)
+void GSocketGUIFunctionsTableNull::Enable_Events(GSocket *WXUNUSED(socket))
{}
-void GSocketGUIFunctionsTableNull::Disable_Events(GSocket *socket)
+void GSocketGUIFunctionsTableNull::Disable_Events(GSocket *WXUNUSED(socket))
{}
/* Global initialisers */
int i;
m_fd = INVALID_SOCKET;
+ m_handler = NULL;
+
for (i=0;i<GSOCK_MAX_EVENT;i++)
{
m_cbacks[i] = NULL;
m_gui_dependent = NULL;
m_non_blocking = false;
m_reusable = false;
+ m_broadcast = false;
+ m_dobind = true;
m_timeout = 10*60*1000;
/* 10 minutes * 60 sec * 1000 millisec */
m_establishing = false;
/* Per-socket GUI-specific cleanup */
gs_gui_functions->Destroy_Socket(this);
+ delete m_handler;
+
/* Destroy private addresses */
if (m_local)
GAddress_destroy(m_local);
assert(this);
+ /* Don't allow events to fire after socket has been closed */
+ gs_gui_functions->Disable_Events(this);
+
/* If socket has been created, shutdown it */
if (m_fd != INVALID_SOCKET)
{
- shutdown(m_fd, 2);
+ shutdown(m_fd, 1);
Close();
}
{
GAddress *address;
struct sockaddr addr;
- SOCKLEN_T size = sizeof(addr);
+ WX_SOCKLEN_T size = sizeof(addr);
GSocketError err;
assert(this);
return NULL;
}
- if (getsockname(m_fd, &addr, (SOCKLEN_T *) &size) < 0)
+ if (getsockname(m_fd, &addr, (WX_SOCKLEN_T *) &size) < 0)
{
m_error = GSOCK_IOERR;
return NULL;
m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
-#if defined(__EMX__) || defined(__VISAGECPP__)
- ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg));
-#else
- ioctl(m_fd, FIONBIO, &arg);
+
+ /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */
+#ifdef SO_NOSIGPIPE
+ setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(arg));
#endif
+
+ ioctl(m_fd, FIONBIO, &arg);
gs_gui_functions->Enable_Events(this);
/* allow a socket to re-bind if the socket is in the TIME_WAIT
state after being previously closed.
*/
if (m_reusable)
- setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long));
+ {
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg));
+#ifdef SO_REUSEPORT
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg));
+#endif
+ }
/* Bind to the local address,
* retrieve the actual address bound,
if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) ||
(getsockname(m_fd,
m_local->m_addr,
- (SOCKLEN_T *) &m_local->m_len) != 0) ||
+ (WX_SOCKLEN_T *) &m_local->m_len) != 0) ||
(listen(m_fd, 5) != 0))
{
Close();
GSocket *GSocket::WaitConnection()
{
struct sockaddr from;
- SOCKLEN_T fromlen = sizeof(from);
+ WX_SOCKLEN_T fromlen = sizeof(from);
GSocket *connection;
GSocketError err;
int arg = 1;
assert(this);
- /* Reenable CONNECTION events */
- Enable(GSOCK_CONNECTION);
-
/* If the socket has already been created, we exit immediately */
if (m_fd == INVALID_SOCKET || !m_server)
{
return NULL;
}
- connection->m_fd = accept(m_fd, &from, (SOCKLEN_T *) &fromlen);
+ connection->m_fd = accept(m_fd, &from, (WX_SOCKLEN_T *) &fromlen);
+
+ /* Reenable CONNECTION events */
+ Enable(GSOCK_CONNECTION);
if (connection->m_fd == INVALID_SOCKET)
{
m_error = GSOCK_MEMERR;
return NULL;
}
+
err = _GAddress_translate_from(connection->m_peer, &from, fromlen);
if (err != GSOCK_NOERROR)
{
- GAddress_destroy(connection->m_peer);
delete connection;
m_error = err;
return NULL;
}
+
#if defined(__EMX__) || defined(__VISAGECPP__)
ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg));
#else
bool GSocket::SetReusable()
{
/* socket must not be null, and must not be in use/already bound */
- if (this && m_fd == INVALID_SOCKET) {
+ if (this && m_fd == INVALID_SOCKET)
+ {
m_reusable = true;
+
+ return true;
+ }
+
+ return false;
+}
+
+bool GSocket::SetBroadcast()
+{
+ /* socket must not be in use/already bound */
+ if (m_fd == INVALID_SOCKET) {
+ m_broadcast = true;
+ return true;
+ }
+ return false;
+}
+
+bool GSocket::DontDoBind()
+{
+ /* socket must not be in use/already bound */
+ if (m_fd == INVALID_SOCKET) {
+ m_dobind = false;
return true;
}
return false;
* For stream (connection oriented) sockets, GSocket_Connect() tries
* to establish a client connection to a server using the peer address
* as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
- * connection has been succesfully established, or one of the error
+ * connection has been successfully established, or one of the error
* codes listed below. Note that for nonblocking sockets, a return
* value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
* request can be completed later; you should use GSocket_Select()
m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
+
+ /* FreeBSD variants can't use MSG_NOSIGNAL, and instead use a socket option */
+#ifdef SO_NOSIGPIPE
+ setsockopt(m_fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&arg, sizeof(arg));
+#endif
+
#if defined(__EMX__) || defined(__VISAGECPP__)
ioctl(m_fd, FIONBIO, (char*)&arg, sizeof(arg));
#else
ioctl(m_fd, FIONBIO, &arg);
#endif
- gs_gui_functions->Enable_Events(this);
+
+ // If the reuse flag is set, use the applicable socket reuse flags(s)
+ if (m_reusable)
+ {
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg));
+#ifdef SO_REUSEPORT
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg));
+#endif
+ }
+
+ // If a local address has been set, then we need to bind to it before calling connect
+ if (m_local && m_local->m_addr)
+ {
+ bind(m_fd, m_local->m_addr, m_local->m_len);
+ }
/* Connect it to the peer address, with a timeout (see below) */
ret = connect(m_fd, m_peer->m_addr, m_peer->m_len);
+ /* We only call Enable_Events if we know we aren't shutting down the socket.
+ * NB: Enable_Events needs to be called whether the socket is blocking or
+ * non-blocking, it just shouldn't be called prior to knowing there is a
+ * connection _if_ blocking sockets are being used.
+ * If connect above returns 0, we are already connected and need to make the
+ * call to Enable_Events now.
+ */
+
+ if (m_non_blocking || ret == 0)
+ gs_gui_functions->Enable_Events(this);
+
if (ret == -1)
{
err = errno;
else
{
int error;
- SOCKLEN_T len = sizeof(error);
+ SOCKOPTLEN_T len = sizeof(error);
+
+ getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len);
- getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (void*) &error, &len);
+ gs_gui_functions->Enable_Events(this);
if (!error)
return GSOCK_NOERROR;
*/
Close();
m_error = GSOCK_IOERR;
+
return GSOCK_IOERR;
}
#endif
gs_gui_functions->Enable_Events(this);
- /* Bind to the local address,
- * and retrieve the actual address bound.
- */
- if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) ||
- (getsockname(m_fd,
- m_local->m_addr,
- (SOCKLEN_T *) &m_local->m_len) != 0))
+ if (m_reusable)
{
- Close();
- m_error = GSOCK_IOERR;
- return GSOCK_IOERR;
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(arg));
+#ifdef SO_REUSEPORT
+ setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(arg));
+#endif
}
+ if (m_broadcast)
+ {
+ setsockopt(m_fd, SOL_SOCKET, SO_BROADCAST, (const char*)&arg, sizeof(arg));
+ }
+ if (m_dobind)
+ {
+ /* Bind to the local address,
+ * and retrieve the actual address bound.
+ */
+ if ((bind(m_fd, m_local->m_addr, m_local->m_len) != 0) ||
+ (getsockname(m_fd,
+ m_local->m_addr,
+ (WX_SOCKLEN_T *) &m_local->m_len) != 0))
+ {
+ Close();
+ m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+ }
return GSOCK_NOERROR;
}
Disable(GSOCK_INPUT);
/* If the socket is blocking, wait for data (with a timeout) */
- if (Input_Timeout() == GSOCK_TIMEDOUT)
- /* We no longer return here immediately, otherwise socket events would not be re-enabled! */
+ if (Input_Timeout() == GSOCK_TIMEDOUT) {
+ m_error = GSOCK_TIMEDOUT;
+ /* Don't return here immediately, otherwise socket events would not be
+ * re-enabled! */
ret = -1;
- else {
+ }
+ else
+ {
/* Read the data */
if (m_stream)
ret = Recv_Stream(buffer, size);
else
ret = Recv_Dgram(buffer, size);
- }
- if (ret == -1)
- {
- if (errno == EWOULDBLOCK)
- m_error = GSOCK_WOULDBLOCK;
- else
- m_error = GSOCK_IOERR;
+ /* If recv returned zero, then the connection has been gracefully closed.
+ * Otherwise, recv has returned an error (-1), in which case we have lost the
+ * socket only if errno does _not_ indicate that there may be more data to read.
+ */
+ if (ret == 0)
+ {
+ /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */
+ m_detected = GSOCK_LOST_FLAG;
+ Detected_Read();
+ return 0;
+ }
+ else if (ret == -1)
+ {
+ if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
+ m_error = GSOCK_WOULDBLOCK;
+ else
+ m_error = GSOCK_IOERR;
+ }
}
/* Enable events again now that we are done processing */
if (ret == -1)
{
- if (errno == EWOULDBLOCK)
+ if ((errno == EWOULDBLOCK) || (errno == EAGAIN))
{
m_error = GSOCK_WOULDBLOCK;
GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" ));
* will further OUTPUT events be posted.
*/
Enable(GSOCK_OUTPUT);
+
return -1;
}
assert(this);
+ if (m_fd == -1)
+ return (GSOCK_LOST_FLAG & flags);
+
/* Do not use a static struct, Linux can garble it */
tv.tv_sec = m_timeout / 1000;
tv.tv_usec = (m_timeout % 1000) * 1000;
- FD_ZERO(&readfds);
- FD_ZERO(&writefds);
- FD_ZERO(&exceptfds);
- FD_SET(m_fd, &readfds);
+ wxFD_ZERO(&readfds);
+ wxFD_ZERO(&writefds);
+ wxFD_ZERO(&exceptfds);
+ wxFD_SET(m_fd, &readfds);
if (flags & GSOCK_OUTPUT_FLAG || flags & GSOCK_CONNECTION_FLAG)
- FD_SET(m_fd, &writefds);
- FD_SET(m_fd, &exceptfds);
+ wxFD_SET(m_fd, &writefds);
+ wxFD_SET(m_fd, &exceptfds);
/* Check 'sticky' CONNECTION flag first */
result |= (GSOCK_CONNECTION_FLAG & m_detected);
return (result & flags);
}
+ /* Check for exceptions and errors */
+ if (wxFD_ISSET(m_fd, &exceptfds))
+ {
+ m_establishing = false;
+ m_detected = GSOCK_LOST_FLAG;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+
/* Check for readability */
- if (FD_ISSET(m_fd, &readfds))
+ if (wxFD_ISSET(m_fd, &readfds))
{
- char c;
+ result |= GSOCK_INPUT_FLAG;
- if (recv(m_fd, &c, 1, MSG_PEEK) > 0)
+ if (m_server && m_stream)
{
- result |= GSOCK_INPUT_FLAG;
- }
- else
- {
- if (m_server && m_stream)
- {
- result |= GSOCK_CONNECTION_FLAG;
- m_detected |= GSOCK_CONNECTION_FLAG;
- }
- else
- {
- m_detected = GSOCK_LOST_FLAG;
- m_establishing = false;
-
- /* LOST event: Abort any further processing */
- return (GSOCK_LOST_FLAG & flags);
- }
+ /* This is a TCP server socket that detected a connection.
+ While the INPUT_FLAG is also set, it doesn't matter on
+ this kind of sockets, as we can only Accept() from them. */
+ result |= GSOCK_CONNECTION_FLAG;
+ m_detected |= GSOCK_CONNECTION_FLAG;
}
}
/* Check for writability */
- if (FD_ISSET(m_fd, &writefds))
+ if (wxFD_ISSET(m_fd, &writefds))
{
if (m_establishing && !m_server)
{
int error;
- SOCKLEN_T len = sizeof(error);
+ SOCKOPTLEN_T len = sizeof(error);
m_establishing = false;
- getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
+ getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
if (error)
{
}
}
- /* Check for exceptions and errors (is this useful in Unices?) */
- if (FD_ISSET(m_fd, &exceptfds))
- {
- m_establishing = false;
- m_detected = GSOCK_LOST_FLAG;
-
- /* LOST event: Abort any further processing */
- return (GSOCK_LOST_FLAG & flags);
- }
-
return (result & flags);
}
else
{
-
assert(this);
return flags & m_detected;
-
}
}
}
/* GSocket_GetError:
- * Returns the last error occured for this socket. Note that successful
+ * Returns the last error occurred for this socket. Note that successful
* operations do not clear this back to GSOCK_NOERROR, so use it only
* after an error.
*/
* assume that it can write since the first OUTPUT event, and no more
* OUTPUT events will be generated unless an error occurs.
* GSOCK_CONNECTION:
- * Connection succesfully established, for client sockets, or incoming
+ * Connection successfully established, for client sockets, or incoming
* client connection, for server sockets. Wait for this event (also watch
* out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
* GSOCK_LOST:
GSocketError GSocket::GetSockOpt(int level, int optname,
void *optval, int *optlen)
{
- if (getsockopt(m_fd, level, optname, optval, (SOCKLEN_T*)optlen) == 0)
- {
+ if (getsockopt(m_fd, level, optname, (char*)optval, (SOCKOPTLEN_T*)optlen) == 0)
return GSOCK_NOERROR;
- }
+
return GSOCK_OPTERR;
}
GSocketError GSocket::SetSockOpt(int level, int optname,
const void *optval, int optlen)
{
- if (setsockopt(m_fd, level, optname, optval, optlen) == 0)
- {
+ if (setsockopt(m_fd, level, optname, (const char*)optval, optlen) == 0)
return GSOCK_NOERROR;
- }
+
return GSOCK_OPTERR;
}
if (!m_non_blocking)
{
- FD_ZERO(&readfds);
- FD_SET(m_fd, &readfds);
+ wxFD_ZERO(&readfds);
+ wxFD_SET(m_fd, &readfds);
ret = select(m_fd + 1, &readfds, NULL, NULL, &tv);
if (ret == 0)
{
m_error = GSOCK_TIMEDOUT;
return GSOCK_TIMEDOUT;
}
+
if (ret == -1)
{
GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" ));
return GSOCK_TIMEDOUT;
}
}
+
return GSOCK_NOERROR;
}
if (!m_non_blocking)
{
- FD_ZERO(&writefds);
- FD_SET(m_fd, &writefds);
+ wxFD_ZERO(&writefds);
+ wxFD_SET(m_fd, &writefds);
ret = select(m_fd + 1, NULL, &writefds, NULL, &tv);
if (ret == 0)
{
m_error = GSOCK_TIMEDOUT;
return GSOCK_TIMEDOUT;
}
+
if (ret == -1)
{
GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" ));
m_error = GSOCK_TIMEDOUT;
return GSOCK_TIMEDOUT;
}
- if ( ! FD_ISSET(m_fd, &writefds) ) {
+
+ if ( ! wxFD_ISSET(m_fd, &writefds) )
+ {
GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" ));
}
- else {
+ else
+ {
GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" ));
}
}
int GSocket::Recv_Stream(char *buffer, int size)
{
- return recv(m_fd, buffer, size, 0);
+ int ret;
+ do
+ {
+ ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL);
+ }
+ while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
+
+ return ret;
}
int GSocket::Recv_Dgram(char *buffer, int size)
{
struct sockaddr from;
- SOCKLEN_T fromlen = sizeof(from);
+ WX_SOCKLEN_T fromlen = sizeof(from);
int ret;
GSocketError err;
fromlen = sizeof(from);
- ret = recvfrom(m_fd, buffer, size, 0, &from, (SOCKLEN_T *) &fromlen);
+ do
+ {
+ ret = recvfrom(m_fd, buffer, size, 0, &from, (WX_SOCKLEN_T *) &fromlen);
+ }
+ while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
if (ret == -1)
return -1;
return -1;
}
}
+
err = _GAddress_translate_from(m_peer, &from, fromlen);
if (err != GSOCK_NOERROR)
{
{
int ret;
-#ifndef __VISAGECPP__
MASK_SIGNAL();
- ret = send(m_fd, buffer, size, 0);
+
+ do
+ {
+ ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL);
+ }
+ while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
+
UNMASK_SIGNAL();
-#else
- ret = send(m_fd, (char *)buffer, size, 0);
-#endif
return ret;
}
return -1;
}
-#ifndef __VISAGECPP__
MASK_SIGNAL();
- ret = sendto(m_fd, buffer, size, 0, addr, len);
+
+ do
+ {
+ ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);
+ }
+ while (ret == -1 && errno == EINTR); /* Loop until not interrupted */
+
UNMASK_SIGNAL();
-#else
- ret = sendto(m_fd, (char *)buffer, size, 0, addr, len);
-#endif
/* Frees memory allocated from _GAddress_translate_to */
free(addr);
{
char c;
+ /* Safeguard against straggling call to Detected_Read */
+ if (m_fd == INVALID_SOCKET)
+ {
+ return;
+ }
+
/* If we have already detected a LOST event, then don't try
* to do any further processing.
*/
return;
}
- if (recv(m_fd, &c, 1, MSG_PEEK) > 0)
+ int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL);
+
+ if (num > 0)
{
CALL_CALLBACK(this, GSOCK_INPUT);
}
{
CALL_CALLBACK(this, GSOCK_CONNECTION);
}
- else
+ else if (num == 0)
{
+ /* graceful shutdown */
CALL_CALLBACK(this, GSOCK_LOST);
Shutdown();
}
+ else
+ {
+ /* Do not throw a lost event in cases where the socket isn't really lost */
+ if ((errno == EWOULDBLOCK) || (errno == EAGAIN) || (errno == EINTR))
+ {
+ CALL_CALLBACK(this, GSOCK_INPUT);
+ }
+ else
+ {
+ CALL_CALLBACK(this, GSOCK_LOST);
+ Shutdown();
+ }
+ }
}
}
if (m_establishing && !m_server)
{
int error;
- SOCKLEN_T len = sizeof(error);
+ SOCKOPTLEN_T len = sizeof(error);
m_establishing = false;
- getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
+ getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len);
if (error)
{
GSocket *GSocket_new(void)
{
GSocket *newsocket = new GSocket();
- if(newsocket->IsOk())
+ if (newsocket->IsOk())
return newsocket;
+
delete newsocket;
+
return NULL;
}
address->m_error = GSOCK_MEMERR;
return GSOCK_MEMERR;
}
+
memcpy(address->m_addr, addr, len);
return GSOCK_NOERROR;
if (inet_aton(hostname, addr) == 0)
{
#elif defined(HAVE_INET_ADDR)
- if ( (addr->s_addr = inet_addr(hostname)) == -1 )
+ if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 )
{
#else
/* Use gethostbyname by default */
struct in_addr *array_addr;
/* It is a real name, we solve it */
- if ((he = gethostbyname(hostname)) == NULL)
+ struct hostent h;
+#if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
+ struct hostent_data buffer;
+#else
+ char buffer[1024];
+#endif
+ int err;
+ he = wxGethostbyname_r(hostname, &h, (void*)&buffer, sizeof(buffer), &err);
+ if (he == NULL)
{
/* Reset to invalid address */
addr->s_addr = INADDR_NONE;
address->m_error = GSOCK_NOHOST;
return GSOCK_NOHOST;
}
+
array_addr = (struct in_addr *) *(he->h_addr_list);
addr->s_addr = array_addr[0].s_addr;
}
+
return GSOCK_NOERROR;
}
+
+GSocketError GAddress_INET_SetBroadcastAddress(GAddress *address)
+{
+ return GAddress_INET_SetHostAddress(address, INADDR_BROADCAST);
+}
+
GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
{
return GAddress_INET_SetHostAddress(address, INADDR_ANY);
return GSOCK_INVPORT;
}
- se = getservbyname(port, protocol);
+#if defined(HAVE_FUNC_GETSERVBYNAME_R_4)
+ struct servent_data buffer;
+#else
+ char buffer[1024];
+#endif
+ struct servent serv;
+ se = wxGetservbyname_r(port, protocol, &serv,
+ (void*)&buffer, sizeof(buffer));
if (!se)
{
/* the cast to int suppresses compiler warnings about subscript having the
addr = (struct sockaddr_in *)address->m_addr;
addr_buf = (char *)&(addr->sin_addr);
- he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
+ struct hostent temphost;
+#if defined(HAVE_FUNC_GETHOSTBYNAME_R_3)
+ struct hostent_data buffer;
+#else
+ char buffer[1024];
+#endif
+ int err;
+ he = wxGethostbyaddr_r(addr_buf, sizeof(addr->sin_addr), AF_INET, &temphost,
+ (void*)&buffer, sizeof(buffer), &err);
if (he == NULL)
{
address->m_error = GSOCK_NOHOST;
}
#endif /* !defined(__VISAGECPP__) */
#endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
-
projects / wxWidgets.git / blobdiff