X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/976abb72fc2a94bf38c9231690ebeabc7631e491..50679f941ec64c417c39582b276068fef8ca59cb:/src/unix/gsocket.cpp diff --git a/src/unix/gsocket.cpp b/src/unix/gsocket.cpp index d9a83d361e..bf29390d94 100644 --- a/src/unix/gsocket.cpp +++ b/src/unix/gsocket.cpp @@ -12,10 +12,6 @@ * ------------------------------------------------------------------------- */ -/* - * PLEASE don't put C++ comments here - this is a C source file. - */ - #if defined(__WATCOMC__) #include "wx/wxprec.h" #include @@ -27,7 +23,7 @@ #endif #if defined(__VISAGECPP__) -#define BSD_SELECT /* use Berkley Sockets select */ +#define BSD_SELECT /* use Berkeley Sockets select */ #endif #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) @@ -43,6 +39,10 @@ #include #include +#ifdef HAVE_SYS_SELECT_H +# include +#endif + #ifdef __VMS__ #include struct sockaddr_un @@ -183,7 +183,11 @@ int _System soclose(int); #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" @@ -192,6 +196,175 @@ int _System soclose(int); # 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) +{ + memcpy(h, he, sizeof(struct hostent)); + int len = strlen(h->h_name); + if (len > size) + len = size - 1; + memcpy(buffer, h->h_name, len); + buffer[len] = '\0'; + h->h_name = buffer; + buffer += len + 1; + size -= len + 1; + len = h->h_length; + for (char **p = h->h_addr_list; *p != 0; p++) { + if (size < len){ + *err = ENOMEM; + return NULL; + } + memcpy(buffer, *p, len); + *p = buffer; + buffer += len; + size -= len; + } + for (char **q = h->h_aliases; size > 0 && *q != 0; q++){ + len = strlen(*q); + if (len > size) + len = size - 1; + memcpy(buffer, *q, len); + buffer[len] = '\0'; + *q = buffer; + buffer += len + 1; + size -= len + 1; + } + return h; +} +#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 + static wxMutex nameLock; + wxMutexLocker locker(nameLock); +#endif + he = gethostbyname(hostname); + if (!he) + *err = h_errno; + else + he = deepCopyHostent(h, he, (char*)buffer, size, err); +#endif + return he; +} + +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 + static wxMutex addrLock; + 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) +{ + memcpy(s, se, sizeof(struct servent)); + int len = strlen(s->s_name); + if (len > size) + len = size - 1; + memcpy(buffer, s->s_name, len); + buffer[len] = '\0'; + s->s_name = buffer; + buffer += len + 1; + size -= len + 1; + len = strlen(s->s_proto); + if (len > size) + len = size - 1; + memcpy(buffer, s->s_proto, len); + buffer[len] = '\0'; + s->s_proto = buffer; + buffer += len + 1; + size -= len + 1; + for (char **q = s->s_aliases; size > 0 && *q != 0; q++){ + len = strlen(*q); + if (len > size) + len = size - 1; + memcpy(buffer, *q, len); + buffer[len] = '\0'; + *q = buffer; + buffer += len + 1; + size -= len + 1; + } + return s; +} +#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 + static wxMutex servLock; + 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 @@ -331,6 +504,9 @@ void GSocket::Shutdown() 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) { @@ -519,7 +695,12 @@ GSocketError GSocket::SetServer() state after being previously closed. */ if (m_reusable) + { setsockopt(m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long)); +#ifdef SO_REUSEPORT + setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(u_long)); +#endif + } /* Bind to the local address, * retrieve the actual address bound, @@ -613,6 +794,7 @@ GSocket *GSocket::WaitConnection() m_error = GSOCK_MEMERR; return NULL; } + err = _GAddress_translate_from(connection->m_peer, &from, fromlen); if (err != GSOCK_NOERROR) { @@ -620,6 +802,7 @@ GSocket *GSocket::WaitConnection() m_error = err; return NULL; } + #if defined(__EMX__) || defined(__VISAGECPP__) ioctl(connection->m_fd, FIONBIO, (char*)&arg, sizeof(arg)); #else @@ -633,10 +816,13 @@ GSocket *GSocket::WaitConnection() 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; } @@ -713,6 +899,21 @@ GSocketError GSocket::Connect(GSocketStream stream) 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(u_long)); +#ifdef SO_REUSEPORT + setsockopt(m_fd, SOL_SOCKET, SO_REUSEPORT, (const char*)&arg, sizeof(u_long)); +#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); @@ -721,13 +922,11 @@ GSocketError GSocket::Connect(GSocketStream stream) * 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. + * call to Enable_Events now. */ - + if (m_non_blocking || ret == 0) - { gs_gui_functions->Enable_Events(this); - } if (ret == -1) { @@ -778,6 +977,7 @@ GSocketError GSocket::Connect(GSocketStream stream) */ Close(); m_error = GSOCK_IOERR; + return GSOCK_IOERR; } @@ -875,14 +1075,28 @@ int GSocket::Read(char *buffer, int size) * 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 recv returned zero, then the connection is lost, and errno is not set. + * 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_error = GSOCK_IOERR; + m_detected = GSOCK_LOST_FLAG; + Close(); + // Signal an error for return + return -1; + } + else if (ret == -1) + { if ((errno == EWOULDBLOCK) || (errno == EAGAIN)) m_error = GSOCK_WOULDBLOCK; else @@ -945,6 +1159,7 @@ int GSocket::Write(const char *buffer, int size) * will further OUTPUT events be posted. */ Enable(GSOCK_OUTPUT); + return -1; } @@ -975,18 +1190,18 @@ GSocketEventFlags GSocket::Select(GSocketEventFlags flags) 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); @@ -1008,37 +1223,33 @@ GSocketEventFlags GSocket::Select(GSocketEventFlags flags) return (result & flags); } - /* Check for readability */ - if (FD_ISSET(m_fd, &readfds)) + /* Check for exceptions and errors */ + if (wxFD_ISSET(m_fd, &exceptfds)) { - char c; + m_establishing = false; + m_detected = GSOCK_LOST_FLAG; - int num = recv(m_fd, &c, 1, MSG_PEEK | GSOCKET_MSG_NOSIGNAL); + /* LOST event: Abort any further processing */ + return (GSOCK_LOST_FLAG & flags); + } - if (num > 0) - { - result |= GSOCK_INPUT_FLAG; - } - else - { - if (m_server && m_stream) - { - result |= GSOCK_CONNECTION_FLAG; - m_detected |= GSOCK_CONNECTION_FLAG; - } - else if ((errno != EWOULDBLOCK) && (errno != EAGAIN) && (errno != EINTR)) - { - m_detected = GSOCK_LOST_FLAG; - m_establishing = false; + /* Check for readability */ + if (wxFD_ISSET(m_fd, &readfds)) + { + result |= GSOCK_INPUT_FLAG; - /* LOST event: Abort any further processing */ - return (GSOCK_LOST_FLAG & flags); - } + 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. */ + 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) { @@ -1068,25 +1279,13 @@ GSocketEventFlags GSocket::Select(GSocketEventFlags flags) } } - /* 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; - } } @@ -1199,9 +1398,8 @@ 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; } @@ -1209,9 +1407,8 @@ 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; } @@ -1250,8 +1447,8 @@ GSocketError GSocket::Input_Timeout() 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) { @@ -1259,6 +1456,7 @@ GSocketError GSocket::Input_Timeout() m_error = GSOCK_TIMEDOUT; return GSOCK_TIMEDOUT; } + if (ret == -1) { GSocket_Debug(( "GSocket_Input_Timeout, select returned -1\n" )); @@ -1270,6 +1468,7 @@ GSocketError GSocket::Input_Timeout() return GSOCK_TIMEDOUT; } } + return GSOCK_NOERROR; } @@ -1291,8 +1490,8 @@ GSocketError GSocket::Output_Timeout() 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) { @@ -1300,6 +1499,7 @@ GSocketError GSocket::Output_Timeout() m_error = GSOCK_TIMEDOUT; return GSOCK_TIMEDOUT; } + if (ret == -1) { GSocket_Debug(( "GSocket_Output_Timeout, select returned -1\n" )); @@ -1310,10 +1510,13 @@ GSocketError GSocket::Output_Timeout() 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" )); } } @@ -1331,7 +1534,9 @@ int GSocket::Recv_Stream(char *buffer, int size) do { ret = recv(m_fd, buffer, size, GSOCKET_MSG_NOSIGNAL); - } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ + } + while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ + return ret; } @@ -1347,7 +1552,8 @@ int GSocket::Recv_Dgram(char *buffer, int size) do { ret = recvfrom(m_fd, buffer, size, 0, &from, (WX_SOCKLEN_T *) &fromlen); - } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ + } + while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ if (ret == -1) return -1; @@ -1362,6 +1568,7 @@ int GSocket::Recv_Dgram(char *buffer, int size) return -1; } } + err = _GAddress_translate_from(m_peer, &from, fromlen); if (err != GSOCK_NOERROR) { @@ -1383,7 +1590,8 @@ int GSocket::Send_Stream(const char *buffer, int size) do { ret = send(m_fd, (char *)buffer, size, GSOCKET_MSG_NOSIGNAL); - } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ + } + while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ UNMASK_SIGNAL(); @@ -1414,7 +1622,8 @@ int GSocket::Send_Dgram(const char *buffer, int size) do { ret = sendto(m_fd, (char *)buffer, size, 0, addr, len); - } while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ + } + while (ret == -1 && errno == EINTR); /* Loop until not interrupted */ UNMASK_SIGNAL(); @@ -1522,9 +1731,11 @@ void GSocket::Detected_Write() GSocket *GSocket_new(void) { GSocket *newsocket = new GSocket(); - if(newsocket->IsOk()) + if (newsocket->IsOk()) return newsocket; + delete newsocket; + return NULL; } @@ -1664,6 +1875,7 @@ GSocketError _GAddress_translate_from(GAddress *address, address->m_error = GSOCK_MEMERR; return GSOCK_MEMERR; } + memcpy(address->m_addr, addr, len); return GSOCK_NOERROR; @@ -1743,16 +1955,26 @@ GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) 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; } @@ -1791,11 +2013,14 @@ GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, return GSOCK_INVPORT; } -#if defined(__WXPM__) && defined(__EMX__) - se = getservbyname(port, (char*)protocol); +#if defined(HAVE_FUNC_GETSERVBYNAME_R_4) + struct servent_data buffer; #else - se = getservbyname(port, protocol); + 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 @@ -1845,7 +2070,15 @@ GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t 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;