/* ------------------------------------------------------------------------- * 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 * Purpose: GSocket main Unix and OS/2 file * Licence: The wxWindows licence * CVSID: $Id$ * ------------------------------------------------------------------------- */ #if defined(__WATCOMC__) #include "wx/wxprec.h" #include #include #endif #ifndef __GSOCKET_STANDALONE__ #include "wx/defs.h" #include "wx/private/gsocketiohandler.h" #endif #if defined(__VISAGECPP__) #define BSD_SELECT /* use Berkeley Sockets select */ #endif #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) #include #include #ifdef __VISAGECPP__ #include #include #include #include #endif #include #include #ifdef HAVE_SYS_SELECT_H # include #endif #ifdef __VMS__ #include struct sockaddr_un { u_char sun_len; /* sockaddr len including null */ u_char sun_family; /* AF_UNIX */ char sun_path[108]; /* path name (gag) */ }; #else #include #include #endif #ifndef __VISAGECPP__ #include #include #include #include #include #include #else #include # if __IBMCPP__ < 400 #include #include #include #include #include #define EBADF SOCEBADF # ifdef min # undef min # endif # else #include #include #include #define close(a) soclose(a) #define select(a,b,c,d,e) bsdselect(a,b,c,d,e) int _System bsdselect(int, struct fd_set *, struct fd_set *, struct fd_set *, struct timeval *); int _System soclose(int); # endif #endif #ifdef __EMX__ #include #endif #include #include #include #include #ifdef sun # include #endif #ifdef sgi # include #endif #ifdef _AIX # include #endif #include #ifndef WX_SOCKLEN_T #ifdef VMS # define WX_SOCKLEN_T unsigned int #else # ifdef __GLIBC__ # if __GLIBC__ == 2 # define WX_SOCKLEN_T socklen_t # endif # elif defined(__WXMAC__) # define WX_SOCKLEN_T socklen_t # else # define WX_SOCKLEN_T int # endif #endif #endif /* SOCKLEN_T */ #ifndef SOCKOPTLEN_T #define SOCKOPTLEN_T WX_SOCKLEN_T #endif /* * MSW defines this, Unices don't. */ #ifndef INVALID_SOCKET #define INVALID_SOCKET -1 #endif /* UnixWare reportedly needs this for FIONBIO definition */ #ifdef __UNIXWARE__ #include #endif /* * INADDR_BROADCAST is identical to INADDR_NONE which is not defined * on all systems. INADDR_BROADCAST should be fine to indicate an error. */ #ifndef INADDR_NONE #define INADDR_NONE INADDR_BROADCAST #endif #if defined(__VISAGECPP__) || defined(__WATCOMC__) #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 #else # define GSocket_Debug(args) #endif /* __GSOCKET_DEBUG__ */ #if wxUSE_IPV6 typedef struct sockaddr_storage wxSockAddr; #else typedef struct sockaddr wxSockAddr; #endif /* Table of GUI-related functions. We must call them indirectly because * of wxBase and GUI separation: */ bool GSocket_Init() { GSocketManager * const manager = GSocketManager::Get(); return manager && manager->OnInit(); } void GSocket_Cleanup() { GSocketManager * const manager = GSocketManager::Get(); if ( manager ) manager->OnExit(); } /* Constructors / Destructors for GSocket */ GSocket::GSocket() { int i; m_fd = INVALID_SOCKET; m_handler = NULL; for (i=0;iInit_Socket(this); } void GSocket::Close() { if (m_use_events) DisableEvents(); /* When running on OS X, the gsockosx implementation of GSocketGUIFunctionsTable will close the socket during Disable_Events. However, it will only do this if it is being used. That is, it won't do it in a console program. To ensure we get the right behavior, we have gsockosx set m_fd = INVALID_SOCKET if it has closed the socket which indicates to us (at runtime, instead of at compile time as this had been before) that the socket has already been closed. */ if(m_fd != INVALID_SOCKET) close(m_fd); m_fd = INVALID_SOCKET; } GSocket::~GSocket() { assert(this); /* Check that the socket is really shutdowned */ if (m_fd != INVALID_SOCKET) Shutdown(); GSocketManager::Get()->Destroy_Socket(this); delete m_handler; /* Destroy private addresses */ if (m_local) GAddress_destroy(m_local); if (m_peer) GAddress_destroy(m_peer); } /* GSocket_Shutdown: * Disallow further read/write operations on this socket, close * the fd and disable all callbacks. */ void GSocket::Shutdown() { int evt; assert(this); /* Don't allow events to fire after socket has been closed */ if (m_use_events) DisableEvents(); /* If socket has been created, shutdown it */ if (m_fd != INVALID_SOCKET) { shutdown(m_fd, 1); Close(); } /* Disable GUI callbacks */ for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) m_cbacks[evt] = NULL; m_detected = GSOCK_LOST_FLAG; } /* Address handling */ /* GSocket_SetLocal: * GSocket_GetLocal: * GSocket_SetPeer: * GSocket_GetPeer: * Set or get the local or peer address for this socket. The 'set' * functions return GSOCK_NOERROR on success, an error code otherwise. * The 'get' functions return a pointer to a GAddress object on success, * or NULL otherwise, in which case they set the error code of the * corresponding GSocket. * * Error codes: * GSOCK_INVSOCK - the socket is not valid. * GSOCK_INVADDR - the address is not valid. */ GSocketError GSocket::SetLocal(GAddress *address) { assert(this); /* the socket must be initialized, or it must be a server */ if ((m_fd != INVALID_SOCKET && !m_server)) { m_error = GSOCK_INVSOCK; return GSOCK_INVSOCK; } /* check address */ if (address == NULL || address->m_family == GSOCK_NOFAMILY) { m_error = GSOCK_INVADDR; return GSOCK_INVADDR; } if (m_local) GAddress_destroy(m_local); m_local = GAddress_copy(address); return GSOCK_NOERROR; } GSocketError GSocket::SetPeer(GAddress *address) { assert(this); /* check address */ if (address == NULL || address->m_family == GSOCK_NOFAMILY) { m_error = GSOCK_INVADDR; return GSOCK_INVADDR; } if (m_peer) GAddress_destroy(m_peer); m_peer = GAddress_copy(address); return GSOCK_NOERROR; } GAddress *GSocket::GetLocal() { GAddress *address; wxSockAddr addr; WX_SOCKLEN_T size = sizeof(addr); GSocketError err; assert(this); /* try to get it from the m_local var first */ if (m_local) return GAddress_copy(m_local); /* else, if the socket is initialized, try getsockname */ if (m_fd == INVALID_SOCKET) { m_error = GSOCK_INVSOCK; return NULL; } if (getsockname(m_fd, (sockaddr*)&addr, (WX_SOCKLEN_T *) &size) < 0) { m_error = GSOCK_IOERR; return NULL; } /* got a valid address from getsockname, create a GAddress object */ address = GAddress_new(); if (address == NULL) { m_error = GSOCK_MEMERR; return NULL; } err = _GAddress_translate_from(address, (sockaddr*)&addr, size); if (err != GSOCK_NOERROR) { GAddress_destroy(address); m_error = err; return NULL; } return address; } GAddress *GSocket::GetPeer() { assert(this); /* try to get it from the m_peer var */ if (m_peer) return GAddress_copy(m_peer); return NULL; } /* Server specific parts */ /* GSocket_SetServer: * Sets up this socket as a server. The local address must have been * set with GSocket_SetLocal() before GSocket_SetServer() is called. * Returns GSOCK_NOERROR on success, one of the following otherwise: * * Error codes: * GSOCK_INVSOCK - the socket is in use. * GSOCK_INVADDR - the local address has not been set. * GSOCK_IOERR - low-level error. */ GSocketError GSocket::SetServer() { int arg = 1; assert(this); /* must not be in use */ if (m_fd != INVALID_SOCKET) { m_error = GSOCK_INVSOCK; return GSOCK_INVSOCK; } /* the local addr must have been set */ if (!m_local) { m_error = GSOCK_INVADDR; return GSOCK_INVADDR; } /* Initialize all fields */ m_stream = true; m_server = true; /* Create the socket */ m_fd = socket(m_local->m_realfamily, SOCK_STREAM, 0); if (m_fd == INVALID_SOCKET) { 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 ioctl(m_fd, FIONBIO, &arg); if (m_use_events) EnableEvents(); /* 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(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, * and listen up to 5 connections. */ 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) || (listen(m_fd, 5) != 0)) { Close(); m_error = GSOCK_IOERR; return GSOCK_IOERR; } return GSOCK_NOERROR; } /* GSocket_WaitConnection: * Waits for an incoming client connection. Returns a pointer to * a GSocket object, or NULL if there was an error, in which case * the last error field will be updated for the calling GSocket. * * Error codes (set in the calling GSocket) * GSOCK_INVSOCK - the socket is not valid or not a server. * GSOCK_TIMEDOUT - timeout, no incoming connections. * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking. * GSOCK_MEMERR - couldn't allocate memory. * GSOCK_IOERR - low-level error. */ GSocket *GSocket::WaitConnection() { wxSockAddr from; WX_SOCKLEN_T fromlen = sizeof(from); GSocket *connection; GSocketError err; int arg = 1; assert(this); /* If the socket has already been created, we exit immediately */ if (m_fd == INVALID_SOCKET || !m_server) { m_error = GSOCK_INVSOCK; return NULL; } /* Create a GSocket object for the new connection */ connection = GSocket_new(); if (!connection) { m_error = GSOCK_MEMERR; return NULL; } /* Wait for a connection (with timeout) */ if (Input_Timeout() == GSOCK_TIMEDOUT) { delete connection; /* m_error set by _GSocket_Input_Timeout */ return NULL; } connection->m_fd = accept(m_fd, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen); /* Reenable CONNECTION events */ Enable(GSOCK_CONNECTION); if (connection->m_fd == INVALID_SOCKET) { if (errno == EWOULDBLOCK) m_error = GSOCK_WOULDBLOCK; else m_error = GSOCK_IOERR; delete connection; return NULL; } /* Initialize all fields */ connection->m_server = false; connection->m_stream = true; /* Setup the peer address field */ connection->m_peer = GAddress_new(); if (!connection->m_peer) { delete connection; m_error = GSOCK_MEMERR; return NULL; } err = _GAddress_translate_from(connection->m_peer, (sockaddr*)&from, fromlen); if (err != GSOCK_NOERROR) { delete connection; m_error = err; return NULL; } #if defined(__EMX__) || defined(__VISAGECPP__) ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); #else ioctl(connection->m_fd, FIONBIO, &arg); #endif if (m_use_events) connection->Notify(true); return connection; } void GSocket::Notify(bool flag) { if (flag == m_use_events) return; m_use_events = flag; EnableEvents(flag); } void GSocket::EnableEvents(bool flag) { if (flag) GSocketManager::Get()->Enable_Events(this); else GSocketManager::Get()->Disable_Events(this); } bool GSocket::SetReusable() { /* socket must not be null, and must not be in use/already bound */ 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; } /* Client specific parts */ /* GSocket_Connect: * 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 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() * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the * corresponding asynchronous events. * * For datagram (non connection oriented) sockets, GSocket_Connect() * just sets the peer address established with GSocket_SetPeer() as * default destination. * * Error codes: * GSOCK_INVSOCK - the socket is in use or not valid. * GSOCK_INVADDR - the peer address has not been established. * GSOCK_TIMEDOUT - timeout, the connection failed. * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only) * GSOCK_MEMERR - couldn't allocate memory. * GSOCK_IOERR - low-level error. */ GSocketError GSocket::Connect(GSocketStream stream) { int err, ret; int arg = 1; assert(this); /* Enable CONNECTION events (needed for nonblocking connections) */ Enable(GSOCK_CONNECTION); if (m_fd != INVALID_SOCKET) { m_error = GSOCK_INVSOCK; return GSOCK_INVSOCK; } if (!m_peer) { m_error = GSOCK_INVADDR; return GSOCK_INVADDR; } /* Streamed or dgram socket? */ m_stream = (stream == GSOCK_STREAMED); m_server = false; m_establishing = false; /* Create the socket */ m_fd = socket(m_peer->m_realfamily, m_stream? SOCK_STREAM : SOCK_DGRAM, 0); if (m_fd == INVALID_SOCKET) { 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 // 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 (m_initialRecvBufferSize >= 0) setsockopt(m_fd, SOL_SOCKET, SO_RCVBUF, (const char*)&m_initialRecvBufferSize, sizeof(m_initialRecvBufferSize)); if (m_initialSendBufferSize >= 0) setsockopt(m_fd, SOL_SOCKET, SO_SNDBUF, (const char*)&m_initialSendBufferSize, sizeof(m_initialSendBufferSize)); // 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_use_events && (m_non_blocking || ret == 0)) EnableEvents(); if (ret == -1) { err = errno; /* If connect failed with EINPROGRESS and the GSocket object * is in blocking mode, we select() for the specified timeout * checking for writability to see if the connection request * completes. */ if ((err == EINPROGRESS) && (!m_non_blocking)) { if (Output_Timeout() == GSOCK_TIMEDOUT) { Close(); /* m_error is set in _GSocket_Output_Timeout */ return GSOCK_TIMEDOUT; } else { int error; SOCKOPTLEN_T len = sizeof(error); getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*) &error, &len); if (m_use_events) EnableEvents(); if (!error) return GSOCK_NOERROR; } } /* If connect failed with EINPROGRESS and the GSocket object * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK * (and return GSOCK_WOULDBLOCK) but we don't close the socket; * this way if the connection completes, a GSOCK_CONNECTION * event will be generated, if enabled. */ if ((err == EINPROGRESS) && (m_non_blocking)) { m_establishing = true; m_error = GSOCK_WOULDBLOCK; return GSOCK_WOULDBLOCK; } /* If connect failed with an error other than EINPROGRESS, * then the call to GSocket_Connect has failed. */ Close(); m_error = GSOCK_IOERR; return GSOCK_IOERR; } return GSOCK_NOERROR; } /* Datagram sockets */ /* GSocket_SetNonOriented: * Sets up this socket as a non-connection oriented (datagram) socket. * Before using this function, the local address must have been set * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR * on success, or one of the following otherwise. * * Error codes: * GSOCK_INVSOCK - the socket is in use. * GSOCK_INVADDR - the local address has not been set. * GSOCK_IOERR - low-level error. */ GSocketError GSocket::SetNonOriented() { int arg = 1; assert(this); if (m_fd != INVALID_SOCKET) { m_error = GSOCK_INVSOCK; return GSOCK_INVSOCK; } if (!m_local) { m_error = GSOCK_INVADDR; return GSOCK_INVADDR; } /* Initialize all fields */ m_stream = false; m_server = false; /* Create the socket */ m_fd = socket(m_local->m_realfamily, SOCK_DGRAM, 0); if (m_fd == INVALID_SOCKET) { 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); #endif if (m_use_events) EnableEvents(); 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 (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; } /* Generic IO */ /* Like recv(), send(), ... */ int GSocket::Read(char *buffer, int size) { int ret; assert(this); if (m_fd == INVALID_SOCKET || m_server) { m_error = GSOCK_INVSOCK; return -1; } /* Disable events during query of socket status */ Disable(GSOCK_INPUT); /* If the socket is blocking, wait for data (with a timeout) */ 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 { /* Read the data */ if (m_stream) ret = Recv_Stream(buffer, size); else ret = Recv_Dgram(buffer, size); /* * If recv returned zero for a TCP socket (if m_stream == NULL, it's an UDP * socket and empty datagrams are possible), 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) && m_stream) { /* Make sure wxSOCKET_LOST event gets sent and shut down the socket */ if (m_use_events) { 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 */ Enable(GSOCK_INPUT); return ret; } int GSocket::Write(const char *buffer, int size) { int ret; assert(this); GSocket_Debug(( "GSocket_Write #1, size %d\n", size )); if (m_fd == INVALID_SOCKET || m_server) { m_error = GSOCK_INVSOCK; return -1; } GSocket_Debug(( "GSocket_Write #2, size %d\n", size )); /* If the socket is blocking, wait for writability (with a timeout) */ if (Output_Timeout() == GSOCK_TIMEDOUT) return -1; GSocket_Debug(( "GSocket_Write #3, size %d\n", size )); /* Write the data */ if (m_stream) ret = Send_Stream(buffer, size); else ret = Send_Dgram(buffer, size); GSocket_Debug(( "GSocket_Write #4, size %d\n", size )); if (ret == -1) { if ((errno == EWOULDBLOCK) || (errno == EAGAIN)) { m_error = GSOCK_WOULDBLOCK; GSocket_Debug(( "GSocket_Write error WOULDBLOCK\n" )); } else { m_error = GSOCK_IOERR; GSocket_Debug(( "GSocket_Write error IOERR\n" )); } /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect * in MSW). Once the first OUTPUT event is received, users can assume * that the socket is writable until a read operation fails. Only then * will further OUTPUT events be posted. */ Enable(GSOCK_OUTPUT); return -1; } GSocket_Debug(( "GSocket_Write #5, size %d ret %d\n", size, ret )); return ret; } /* GSocket_Select: * Polls the socket to determine its status. This function will * check for the events specified in the 'flags' parameter, and * it will return a mask indicating which operations can be * performed. This function won't block, regardless of the * mode (blocking | nonblocking) of the socket. */ GSocketEventFlags GSocket::Select(GSocketEventFlags flags) { assert(this); GSocketEventFlags result = 0; fd_set readfds; fd_set writefds; fd_set exceptfds; struct timeval tv; if (m_fd == -1) return (GSOCK_LOST_FLAG & flags); /* Do not use a static struct, Linux can garble it */ tv.tv_sec = 0; tv.tv_usec = 0; wxFD_ZERO(&readfds); wxFD_ZERO(&writefds); wxFD_ZERO(&exceptfds); wxFD_SET(m_fd, &readfds); if (flags & GSOCK_OUTPUT_FLAG || flags & GSOCK_CONNECTION_FLAG) wxFD_SET(m_fd, &writefds); wxFD_SET(m_fd, &exceptfds); /* Check 'sticky' CONNECTION flag first */ result |= GSOCK_CONNECTION_FLAG & m_detected; /* If we have already detected a LOST event, then don't try * to do any further processing. */ if ((m_detected & GSOCK_LOST_FLAG) != 0) { m_establishing = false; return (GSOCK_LOST_FLAG & flags); } /* Try select now */ if (select(m_fd + 1, &readfds, &writefds, &exceptfds, &tv) < 0) { /* What to do here? */ 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 (wxFD_ISSET(m_fd, &readfds)) { result |= GSOCK_INPUT_FLAG; if (m_server && m_stream) { /* 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. */ m_detected |= GSOCK_CONNECTION_FLAG; } } /* Check for writability */ if (wxFD_ISSET(m_fd, &writefds)) { if (m_establishing && !m_server) { int error; SOCKOPTLEN_T len = sizeof(error); m_establishing = false; getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len); if (error) { m_detected = GSOCK_LOST_FLAG; /* LOST event: Abort any further processing */ return (GSOCK_LOST_FLAG & flags); } else { m_detected |= GSOCK_CONNECTION_FLAG; } } else { result |= GSOCK_OUTPUT_FLAG; } } return (result | m_detected) & flags; } /* Flags */ /* GSocket_SetNonBlocking: * Sets the socket to non-blocking mode. All IO calls will return * immediately. */ void GSocket::SetNonBlocking(bool non_block) { assert(this); GSocket_Debug( ("GSocket_SetNonBlocking: %d\n", (int)non_block) ); m_non_blocking = non_block; } /* GSocket_SetTimeout: * Sets the timeout for blocking calls. Time is expressed in * milliseconds. */ void GSocket::SetTimeout(unsigned long millisec) { assert(this); m_timeout = millisec; } /* GSocket_GetError: * 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. */ GSocketError WXDLLIMPEXP_NET GSocket::GetError() { assert(this); return m_error; } /* Callbacks */ /* GSOCK_INPUT: * There is data to be read in the input buffer. If, after a read * operation, there is still data available, the callback function will * be called again. * GSOCK_OUTPUT: * The socket is available for writing. That is, the next write call * won't block. This event is generated only once, when the connection is * first established, and then only if a call failed with GSOCK_WOULDBLOCK, * when the output buffer empties again. This means that the app should * 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 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: * The connection is lost (or a connection request failed); this could * be due to a failure, or due to the peer closing it gracefully. */ /* GSocket_SetCallback: * Enables the callbacks specified by 'flags'. Note that 'flags' * may be a combination of flags OR'ed toghether, so the same * callback function can be made to accept different events. * The callback function must have the following prototype: * * void function(GSocket *socket, GSocketEvent event, char *cdata) */ void GSocket::SetCallback(GSocketEventFlags flags, GSocketCallback callback, char *cdata) { int count; assert(this); for (count = 0; count < GSOCK_MAX_EVENT; count++) { if ((flags & (1 << count)) != 0) { m_cbacks[count] = callback; m_data[count] = cdata; } } } /* GSocket_UnsetCallback: * Disables all callbacks specified by 'flags', which may be a * combination of flags OR'ed toghether. */ void GSocket::UnsetCallback(GSocketEventFlags flags) { int count; assert(this); for (count = 0; count < GSOCK_MAX_EVENT; count++) { if ((flags & (1 << count)) != 0) { m_cbacks[count] = NULL; m_data[count] = NULL; } } } GSocketError GSocket::GetSockOpt(int level, int optname, void *optval, int *optlen) { 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, (const char*)optval, optlen) == 0) return GSOCK_NOERROR; return GSOCK_OPTERR; } #define CALL_CALLBACK(socket, event) { \ socket->Disable(event); \ if (socket->m_cbacks[event]) \ socket->m_cbacks[event](socket, event, socket->m_data[event]); \ } void GSocket::Enable(GSocketEvent event) { if (m_use_events) { m_detected &= ~(1 << event); GSocketManager::Get()->Install_Callback(this, event); } } void GSocket::Disable(GSocketEvent event) { if (m_use_events) { m_detected |= (1 << event); GSocketManager::Get()->Uninstall_Callback(this, event); } } /* _GSocket_Input_Timeout: * For blocking sockets, wait until data is available or * until timeout ellapses. */ GSocketError GSocket::Input_Timeout() { struct timeval tv; fd_set readfds; int ret; /* Linux select() will overwrite the struct on return */ tv.tv_sec = (m_timeout / 1000); tv.tv_usec = (m_timeout % 1000) * 1000; if (!m_non_blocking) { wxFD_ZERO(&readfds); wxFD_SET(m_fd, &readfds); ret = select(m_fd + 1, &readfds, NULL, NULL, &tv); if (ret == 0) { GSocket_Debug(( "GSocket_Input_Timeout, select returned 0\n" )); m_error = GSOCK_TIMEDOUT; return GSOCK_TIMEDOUT; } if (ret == -1) { GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" )); if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); } if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); } if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); } if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); } m_error = GSOCK_TIMEDOUT; return GSOCK_TIMEDOUT; } } return GSOCK_NOERROR; } /* _GSocket_Output_Timeout: * For blocking sockets, wait until data can be sent without * blocking or until timeout ellapses. */ GSocketError GSocket::Output_Timeout() { struct timeval tv; fd_set writefds; int ret; /* Linux select() will overwrite the struct on return */ tv.tv_sec = (m_timeout / 1000); tv.tv_usec = (m_timeout % 1000) * 1000; GSocket_Debug( ("m_non_blocking has: %d\n", (int)m_non_blocking) ); if (!m_non_blocking) { wxFD_ZERO(&writefds); wxFD_SET(m_fd, &writefds); ret = select(m_fd + 1, NULL, &writefds, NULL, &tv); if (ret == 0) { GSocket_Debug(( "GSocket_Output_Timeout, select returned 0\n" )); m_error = GSOCK_TIMEDOUT; return GSOCK_TIMEDOUT; } if (ret == -1) { GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" )); if (errno == EBADF) { GSocket_Debug(( "Invalid file descriptor\n" )); } if (errno == EINTR) { GSocket_Debug(( "A non blocked signal was caught\n" )); } if (errno == EINVAL) { GSocket_Debug(( "The highest number descriptor is negative\n" )); } if (errno == ENOMEM) { GSocket_Debug(( "Not enough memory\n" )); } m_error = GSOCK_TIMEDOUT; return GSOCK_TIMEDOUT; } if ( ! wxFD_ISSET(m_fd, &writefds) ) { GSocket_Debug(( "GSocket_Output_Timeout is buggy!\n" )); } else { GSocket_Debug(( "GSocket_Output_Timeout seems correct\n" )); } } else { GSocket_Debug(( "GSocket_Output_Timeout, didn't try select!\n" )); } return GSOCK_NOERROR; } int GSocket::Recv_Stream(char *buffer, int size) { 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) { wxSockAddr from; WX_SOCKLEN_T fromlen = sizeof(from); int ret; GSocketError err; fromlen = sizeof(from); do { ret = recvfrom(m_fd, buffer, size, 0, (sockaddr*)&from, (WX_SOCKLEN_T *) &fromlen); } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ if (ret == -1) return -1; /* Translate a system address into a GSocket address */ if (!m_peer) { m_peer = GAddress_new(); if (!m_peer) { m_error = GSOCK_MEMERR; return -1; } } err = _GAddress_translate_from(m_peer, (sockaddr*)&from, fromlen); if (err != GSOCK_NOERROR) { GAddress_destroy(m_peer); m_peer = NULL; m_error = err; return -1; } return ret; } int GSocket::Send_Stream(const char *buffer, int size) { int ret; MASK_SIGNAL(); do { ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL); } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ UNMASK_SIGNAL(); return ret; } int GSocket::Send_Dgram(const char *buffer, int size) { struct sockaddr *addr; int len, ret; GSocketError err; if (!m_peer) { m_error = GSOCK_INVADDR; return -1; } err = _GAddress_translate_to(m_peer, &addr, &len); if (err != GSOCK_NOERROR) { m_error = err; return -1; } MASK_SIGNAL(); do { ret = sendto(m_fd, (char *)buffer, size, 0, addr, len); } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ UNMASK_SIGNAL(); /* Frees memory allocated from _GAddress_translate_to */ free(addr); return ret; } void GSocket::Detected_Read() { 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. */ if ((m_detected & GSOCK_LOST_FLAG) != 0) { m_establishing = false; CALL_CALLBACK(this, GSOCK_LOST); Shutdown(); return; } int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL); if (num > 0) { CALL_CALLBACK(this, GSOCK_INPUT); } else { if (m_server && m_stream) { CALL_CALLBACK(this, GSOCK_CONNECTION); } else if (num == 0) { if (m_stream) { /* graceful shutdown */ CALL_CALLBACK(this, GSOCK_LOST); Shutdown(); } else { /* Empty datagram received */ CALL_CALLBACK(this, GSOCK_INPUT); } } 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(); } } } } void GSocket::Detected_Write() { /* If we have already detected a LOST event, then don't try * to do any further processing. */ if ((m_detected & GSOCK_LOST_FLAG) != 0) { m_establishing = false; CALL_CALLBACK(this, GSOCK_LOST); Shutdown(); return; } if (m_establishing && !m_server) { int error; SOCKOPTLEN_T len = sizeof(error); m_establishing = false; getsockopt(m_fd, SOL_SOCKET, SO_ERROR, (char*)&error, &len); if (error) { CALL_CALLBACK(this, GSOCK_LOST); Shutdown(); } else { CALL_CALLBACK(this, GSOCK_CONNECTION); /* We have to fire this event by hand because CONNECTION (for clients) * and OUTPUT are internally the same and we just disabled CONNECTION * events with the above macro. */ CALL_CALLBACK(this, GSOCK_OUTPUT); } } else { CALL_CALLBACK(this, GSOCK_OUTPUT); } } /* Compatibility functions for GSocket */ GSocket *GSocket_new(void) { GSocket *newsocket = new GSocket(); if (newsocket->IsOk()) return newsocket; delete newsocket; return NULL; } /* * ------------------------------------------------------------------------- * GAddress * ------------------------------------------------------------------------- */ /* CHECK_ADDRESS verifies that the current address family is either * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it * initalizes it to be a GSOCK_*family*. In other cases, it returns * an appropiate error code. * * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error. */ #define CHECK_ADDRESS(address, family) \ { \ if (address->m_family == GSOCK_NOFAMILY) \ if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ return address->m_error; \ if (address->m_family != GSOCK_##family) \ { \ address->m_error = GSOCK_INVADDR; \ return GSOCK_INVADDR; \ } \ } #define CHECK_ADDRESS_RETVAL(address, family, retval) \ { \ if (address->m_family == GSOCK_NOFAMILY) \ if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \ return retval; \ if (address->m_family != GSOCK_##family) \ { \ address->m_error = GSOCK_INVADDR; \ return retval; \ } \ } GAddress *GAddress_new(void) { GAddress *address; if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL) return NULL; address->m_family = GSOCK_NOFAMILY; address->m_addr = NULL; address->m_len = 0; return address; } GAddress *GAddress_copy(GAddress *address) { GAddress *addr2; assert(address != NULL); if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL) return NULL; memcpy(addr2, address, sizeof(GAddress)); if (address->m_addr && address->m_len > 0) { addr2->m_addr = (struct sockaddr *)malloc(addr2->m_len); if (addr2->m_addr == NULL) { free(addr2); return NULL; } memcpy(addr2->m_addr, address->m_addr, addr2->m_len); } return addr2; } void GAddress_destroy(GAddress *address) { assert(address != NULL); if (address->m_addr) free(address->m_addr); free(address); } void GAddress_SetFamily(GAddress *address, GAddressType type) { assert(address != NULL); address->m_family = type; } GAddressType GAddress_GetFamily(GAddress *address) { assert(address != NULL); return address->m_family; } GSocketError _GAddress_translate_from(GAddress *address, struct sockaddr *addr, int len) { address->m_realfamily = addr->sa_family; switch (addr->sa_family) { case AF_INET: address->m_family = GSOCK_INET; break; case AF_UNIX: address->m_family = GSOCK_UNIX; break; #if wxUSE_IPV6 case AF_INET6: address->m_family = GSOCK_INET6; break; #endif // wxUSE_IPV6 default: { address->m_error = GSOCK_INVOP; return GSOCK_INVOP; } } if (address->m_addr) free(address->m_addr); address->m_len = len; address->m_addr = (struct sockaddr *)malloc(len); if (address->m_addr == NULL) { address->m_error = GSOCK_MEMERR; return GSOCK_MEMERR; } memcpy(address->m_addr, addr, len); return GSOCK_NOERROR; } GSocketError _GAddress_translate_to(GAddress *address, struct sockaddr **addr, int *len) { if (!address->m_addr) { address->m_error = GSOCK_INVADDR; return GSOCK_INVADDR; } *len = address->m_len; *addr = (struct sockaddr *)malloc(address->m_len); if (*addr == NULL) { address->m_error = GSOCK_MEMERR; return GSOCK_MEMERR; } memcpy(*addr, address->m_addr, address->m_len); return GSOCK_NOERROR; } /* * ------------------------------------------------------------------------- * Internet address family * ------------------------------------------------------------------------- */ GSocketError _GAddress_Init_INET(GAddress *address) { address->m_len = sizeof(struct sockaddr_in); address->m_addr = (struct sockaddr *) malloc(address->m_len); if (address->m_addr == NULL) { address->m_error = GSOCK_MEMERR; return GSOCK_MEMERR; } address->m_family = GSOCK_INET; address->m_realfamily = PF_INET; ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET; ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY; return GSOCK_NOERROR; } GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) { struct hostent *he; struct in_addr *addr; assert(address != NULL); CHECK_ADDRESS(address, INET); addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); /* If it is a numeric host name, convert it now */ #if defined(HAVE_INET_ATON) if (inet_aton(hostname, addr) == 0) { #elif defined(HAVE_INET_ADDR) if ( (addr->s_addr = inet_addr(hostname)) == (unsigned)-1 ) { #else /* Use gethostbyname by default */ #ifndef __WXMAC__ int val = 1; /* VA doesn't like constants in conditional expressions */ if (val) #endif { #endif struct in_addr *array_addr; /* It is a real name, we solve it */ 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); } GSocketError GAddress_INET_SetHostAddress(GAddress *address, unsigned long hostaddr) { struct in_addr *addr; assert(address != NULL); CHECK_ADDRESS(address, INET); addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); addr->s_addr = htonl(hostaddr); return GSOCK_NOERROR; } GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, const char *protocol) { struct servent *se; struct sockaddr_in *addr; assert(address != NULL); CHECK_ADDRESS(address, INET); if (!port) { address->m_error = GSOCK_INVPORT; return GSOCK_INVPORT; } #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 type char */ if (isdigit((int)port[0])) { int port_int; port_int = atoi(port); addr = (struct sockaddr_in *)address->m_addr; addr->sin_port = htons(port_int); return GSOCK_NOERROR; } address->m_error = GSOCK_INVPORT; return GSOCK_INVPORT; } addr = (struct sockaddr_in *)address->m_addr; addr->sin_port = se->s_port; return GSOCK_NOERROR; } GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port) { struct sockaddr_in *addr; assert(address != NULL); CHECK_ADDRESS(address, INET); addr = (struct sockaddr_in *)address->m_addr; addr->sin_port = htons(port); return GSOCK_NOERROR; } GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf) { struct hostent *he; char *addr_buf; struct sockaddr_in *addr; assert(address != NULL); CHECK_ADDRESS(address, INET); addr = (struct sockaddr_in *)address->m_addr; addr_buf = (char *)&(addr->sin_addr); 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; return GSOCK_NOHOST; } strncpy(hostname, he->h_name, sbuf); return GSOCK_NOERROR; } unsigned long GAddress_INET_GetHostAddress(GAddress *address) { struct sockaddr_in *addr; assert(address != NULL); CHECK_ADDRESS_RETVAL(address, INET, 0); addr = (struct sockaddr_in *)address->m_addr; return ntohl(addr->sin_addr.s_addr); } unsigned short GAddress_INET_GetPort(GAddress *address) { struct sockaddr_in *addr; assert(address != NULL); CHECK_ADDRESS_RETVAL(address, INET, 0); addr = (struct sockaddr_in *)address->m_addr; return ntohs(addr->sin_port); } #if wxUSE_IPV6 /* * ------------------------------------------------------------------------- * Internet IPv6 address family * ------------------------------------------------------------------------- */ GSocketError _GAddress_Init_INET6(GAddress *address) { struct in6_addr any_address = IN6ADDR_ANY_INIT; address->m_len = sizeof(struct sockaddr_in6); address->m_addr = (struct sockaddr *) malloc(address->m_len); if (address->m_addr == NULL) { address->m_error = GSOCK_MEMERR; return GSOCK_MEMERR; } memset(address->m_addr,0,address->m_len); address->m_family = GSOCK_INET6; address->m_realfamily = AF_INET6; ((struct sockaddr_in6 *)address->m_addr)->sin6_family = AF_INET6; ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = any_address; return GSOCK_NOERROR; } GSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname) { assert(address != NULL); CHECK_ADDRESS(address, INET6); addrinfo hints; memset( & hints, 0, sizeof( hints ) ); hints.ai_family = AF_INET6; addrinfo * info = 0; if ( getaddrinfo( hostname, "0", & hints, & info ) || ! info ) { address->m_error = GSOCK_NOHOST; return GSOCK_NOHOST; } memcpy( address->m_addr, info->ai_addr, info->ai_addrlen ); freeaddrinfo( info ); return GSOCK_NOERROR; } GSocketError GAddress_INET6_SetAnyAddress(GAddress *address) { assert(address != NULL); CHECK_ADDRESS(address, INET6); struct in6_addr addr; memset( & addr, 0, sizeof( addr ) ); return GAddress_INET6_SetHostAddress(address, addr); } GSocketError GAddress_INET6_SetHostAddress(GAddress *address, struct in6_addr hostaddr) { assert(address != NULL); CHECK_ADDRESS(address, INET6); ((struct sockaddr_in6 *)address->m_addr)->sin6_addr = hostaddr; return GSOCK_NOERROR; } GSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port, const char *protocol) { struct servent *se; struct sockaddr_in6 *addr; assert(address != NULL); CHECK_ADDRESS(address, INET6); if (!port) { address->m_error = GSOCK_INVPORT; return GSOCK_INVPORT; } se = getservbyname(port, protocol); if (!se) { if (isdigit(port[0])) { int port_int; port_int = atoi(port); addr = (struct sockaddr_in6 *)address->m_addr; addr->sin6_port = htons((u_short) port_int); return GSOCK_NOERROR; } address->m_error = GSOCK_INVPORT; return GSOCK_INVPORT; } addr = (struct sockaddr_in6 *)address->m_addr; addr->sin6_port = se->s_port; return GSOCK_NOERROR; } GSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port) { struct sockaddr_in6 *addr; assert(address != NULL); CHECK_ADDRESS(address, INET6); addr = (struct sockaddr_in6 *)address->m_addr; addr->sin6_port = htons(port); return GSOCK_NOERROR; } GSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname, size_t sbuf) { struct hostent *he; char *addr_buf; struct sockaddr_in6 *addr; assert(address != NULL); CHECK_ADDRESS(address, INET6); addr = (struct sockaddr_in6 *)address->m_addr; addr_buf = (char *)&(addr->sin6_addr); he = gethostbyaddr(addr_buf, sizeof(addr->sin6_addr), AF_INET6); if (he == NULL) { address->m_error = GSOCK_NOHOST; return GSOCK_NOHOST; } strncpy(hostname, he->h_name, sbuf); return GSOCK_NOERROR; } GSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr) { assert(address != NULL); assert(hostaddr != NULL); CHECK_ADDRESS_RETVAL(address, INET6, GSOCK_INVADDR); *hostaddr = ( (struct sockaddr_in6 *)address->m_addr )->sin6_addr; return GSOCK_NOERROR; } unsigned short GAddress_INET6_GetPort(GAddress *address) { assert(address != NULL); CHECK_ADDRESS_RETVAL(address, INET6, 0); return ntohs( ((struct sockaddr_in6 *)address->m_addr)->sin6_port ); } #endif // wxUSE_IPV6 /* * ------------------------------------------------------------------------- * Unix address family * ------------------------------------------------------------------------- */ #ifndef __VISAGECPP__ GSocketError _GAddress_Init_UNIX(GAddress *address) { address->m_len = sizeof(struct sockaddr_un); address->m_addr = (struct sockaddr *)malloc(address->m_len); if (address->m_addr == NULL) { address->m_error = GSOCK_MEMERR; return GSOCK_MEMERR; } address->m_family = GSOCK_UNIX; address->m_realfamily = PF_UNIX; ((struct sockaddr_un *)address->m_addr)->sun_family = AF_UNIX; ((struct sockaddr_un *)address->m_addr)->sun_path[0] = 0; return GSOCK_NOERROR; } #define UNIX_SOCK_PATHLEN (sizeof(addr->sun_path)/sizeof(addr->sun_path[0])) GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path) { struct sockaddr_un *addr; assert(address != NULL); CHECK_ADDRESS(address, UNIX); addr = ((struct sockaddr_un *)address->m_addr); strncpy(addr->sun_path, path, UNIX_SOCK_PATHLEN); addr->sun_path[UNIX_SOCK_PATHLEN - 1] = '\0'; return GSOCK_NOERROR; } GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) { struct sockaddr_un *addr; assert(address != NULL); CHECK_ADDRESS(address, UNIX); addr = (struct sockaddr_un *)address->m_addr; strncpy(path, addr->sun_path, sbuf); return GSOCK_NOERROR; } #endif /* !defined(__VISAGECPP__) */ #endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */