diff options
Diffstat (limited to 'nx-X11/lib/include/xtrans/Xtranssock.c')
| -rw-r--r-- | nx-X11/lib/include/xtrans/Xtranssock.c | 3554 |
1 files changed, 3554 insertions, 0 deletions
diff --git a/nx-X11/lib/include/xtrans/Xtranssock.c b/nx-X11/lib/include/xtrans/Xtranssock.c new file mode 100644 index 000000000..dff217e9d --- /dev/null +++ b/nx-X11/lib/include/xtrans/Xtranssock.c @@ -0,0 +1,3554 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */ +/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */ +/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/ +/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */ +/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */ +/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */ +/* */ +/* nx-X11, NX protocol compression and NX extensions to this software */ +/* are copyright of the aforementioned persons and companies. */ +/* */ +/* Redistribution and use of the present software is allowed according */ +/* to terms specified in the file LICENSE which comes in the source */ +/* distribution. */ +/* */ +/* All rights reserved. */ +/* */ +/* NOTE: This software has received contributions from various other */ +/* contributors, only the core maintainers and supporters are listed as */ +/* copyright holders. Please contact us, if you feel you should be listed */ +/* as copyright holder, as well. */ +/* */ +/**************************************************************************/ + +/* + * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ +/* + +Copyright 1993, 1994, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included +in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR +OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of the copyright holders shall +not be used in advertising or otherwise to promote the sale, use or +other dealings in this Software without prior written authorization +from the copyright holders. + + * Copyright 1993, 1994 NCR Corporation - Dayton, Ohio, USA + * + * All Rights Reserved + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name NCR not be used in advertising + * or publicity pertaining to distribution of the software without specific, + * written prior permission. NCR makes no representations about the + * suitability of this software for any purpose. It is provided "as is" + * without express or implied warranty. + * + * NCR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN + * NO EVENT SHALL NCR BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifdef NX_TRANS_SOCKET + +#ifdef NX_TRANS_DEBUG +#define XTRANSDEBUG 5 +#endif + +#ifndef PF_LOCAL +#define PF_LOCAL PF_UNIX +#endif + +#endif + +#include <ctype.h> +#ifdef XTHREADS +#include <nx-X11/Xthreads.h> +#endif + +#ifndef WIN32 + +#if defined(TCPCONN) || defined(UNIXCONN) +#include <sys/socket.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#endif + +#if defined(TCPCONN) || defined(UNIXCONN) +#define X_INCLUDE_NETDB_H +#define XOS_USE_NO_LOCKING +#include <nx-X11/Xos_r.h> +#endif + +#ifdef UNIXCONN +#ifndef X_NO_SYS_UN +#include <sys/un.h> +#endif +#include <sys/stat.h> +#endif + + +#ifndef NO_TCP_H +#if defined(linux) || defined(__GLIBC__) +#include <sys/param.h> +#endif /* linux || __GLIBC__ */ +#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) +#include <sys/param.h> +#include <machine/endian.h> +#endif /* __NetBSD__ || __OpenBSD__ || __FreeBSD__ || __DragonFly__ */ +#include <netinet/tcp.h> +#endif /* !NO_TCP_H */ + +#include <sys/ioctl.h> +#if defined(SVR4) || defined(__SVR4) +#include <sys/filio.h> +#endif + +#include <unistd.h> + +#else /* !WIN32 */ + +#include <nx-X11/Xwinsock.h> +#include <nx-X11/Xwindows.h> +#include <nx-X11/Xw32defs.h> +#undef close +#define close closesocket +#define ECONNREFUSED WSAECONNREFUSED +#define EADDRINUSE WSAEADDRINUSE +#define EPROTOTYPE WSAEPROTOTYPE +#undef EWOULDBLOCK +#define EWOULDBLOCK WSAEWOULDBLOCK +#define EINPROGRESS WSAEINPROGRESS +#undef EINTR +#define EINTR WSAEINTR +#define X_INCLUDE_NETDB_H +#define XOS_USE_MTSAFE_NETDBAPI +#include <nx-X11/Xos_r.h> +#endif /* WIN32 */ + +#if defined(SO_DONTLINGER) && defined(SO_LINGER) +#undef SO_DONTLINGER +#endif + +/* others don't need this */ +#define SocketInitOnce() /**/ + +#ifdef linux +#define HAVE_ABSTRACT_SOCKETS +#endif + +#define MIN_BACKLOG 128 +#ifdef SOMAXCONN +#if SOMAXCONN > MIN_BACKLOG +#define BACKLOG SOMAXCONN +#endif +#endif +#ifndef BACKLOG +#define BACKLOG MIN_BACKLOG +#endif + +/* + * This is the Socket implementation of the X Transport service layer + * + * This file contains the implementation for both the UNIX and INET domains, + * and can be built for either one, or both. + * + */ + +typedef struct _Sockettrans2dev { + const char *transname; + int family; + int devcotsname; + int devcltsname; + int protocol; +} Sockettrans2dev; + +static Sockettrans2dev Sockettrans2devtab[] = { +#ifdef TCPCONN + {"inet",AF_INET,SOCK_STREAM,SOCK_DGRAM,0}, +#if !defined(IPv6) || !defined(AF_INET6) + {"tcp",AF_INET,SOCK_STREAM,SOCK_DGRAM,0}, +#else /* IPv6 */ + {"tcp",AF_INET6,SOCK_STREAM,SOCK_DGRAM,0}, + {"tcp",AF_INET,SOCK_STREAM,SOCK_DGRAM,0}, /* fallback */ + {"inet6",AF_INET6,SOCK_STREAM,SOCK_DGRAM,0}, +#endif +#endif /* TCPCONN */ +#ifdef UNIXCONN + {"unix",AF_UNIX,SOCK_STREAM,SOCK_DGRAM,0}, +#if !defined(LOCALCONN) + {"local",AF_UNIX,SOCK_STREAM,SOCK_DGRAM,0}, +#endif /* !LOCALCONN */ +#endif /* UNIXCONN */ +}; + +#define NUMSOCKETFAMILIES (sizeof(Sockettrans2devtab)/sizeof(Sockettrans2dev)) + +#ifdef TCPCONN +static int TRANS(SocketINETClose) (XtransConnInfo ciptr); +#endif + +#ifdef UNIXCONN + + +#if defined(X11_t) +#define UNIX_PATH "/tmp/.X11-unix/X" +#define UNIX_DIR "/tmp/.X11-unix" +#endif /* X11_t */ +#if defined(XIM_t) +#define UNIX_PATH "/tmp/.XIM-unix/XIM" +#define UNIX_DIR "/tmp/.XIM-unix" +#endif /* XIM_t */ +#if defined(FS_t) || defined(FONT_t) +#define UNIX_PATH "/tmp/.font-unix/fs" +#define UNIX_DIR "/tmp/.font-unix" +#endif /* FS_t || FONT_t */ +#if defined(ICE_t) +#define UNIX_PATH "/tmp/.ICE-unix/" +#define UNIX_DIR "/tmp/.ICE-unix" +#endif /* ICE_t */ + + +#endif /* UNIXCONN */ + +#define PORTBUFSIZE 32 + +#ifndef MAXHOSTNAMELEN +#define MAXHOSTNAMELEN 255 +#endif + +#if defined HAVE_SOCKLEN_T || (defined(IPv6) && defined(AF_INET6)) +# define SOCKLEN_T socklen_t +#elif defined(SVR4) || defined(__SVR4) || defined(__SCO__) +# define SOCKLEN_T size_t +#else +# define SOCKLEN_T int +#endif + +#ifndef X11_t + +/* + * No NX changes if this is not + * compiled as a X11 transport. + */ + +#undef NX_TRANS_SOCKET + +#endif + +#ifdef NX_TRANS_SOCKET + +#if XTRANS_SEND_FDS + #error XTRANS_SEND_FDS is unsupported for NX! +#endif + +#ifdef TRANS_CLIENT + +#include <nx/NX.h> + +typedef struct +{ + XtransConnInfo info; + int local; + int remote; + int congestion; + +} _NXProxyConnInfo; + +#define NX_PROXY_CONN_LIMIT 256 + +static _NXProxyConnInfo *_NXProxyConnInfoTab[NX_PROXY_CONN_LIMIT]; + +#endif /* #ifdef TRANS_CLIENT */ + +static char *_NXGetUnixDir(char *dir); +static char *_NXGetUnixPath(char *path); + +/* + * Forcibly close any connection attempt on the + * listening socket. Need this to avoid loopback + * connections to the agent server. + */ + +#ifdef TRANS_SERVER + +void TRANS(SocketRejectConnection) (XtransConnInfo ciptr) +{ + socklen_t sa_l = sizeof(struct sockaddr); + struct sockaddr sa; + fd_set fs; + struct timeval t; + int f; + + prmsg (3, "SocketRejectConnection(%p)\n", (void *) ciptr); + + FD_ZERO(&fs); + FD_SET(ciptr -> fd, &fs); + + t.tv_sec = 0; + t.tv_usec = 0; + + /* + * Check if there is an awaiting connection. + */ + + if (select(ciptr -> fd + 1, &fs, NULL, NULL, &t) == 1) + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketRejectConnection: Accepting connection attempt on fd [%d].\n", + ciptr -> fd); +#endif + /* + * If there is one, close it. + */ + + if ((f = accept(ciptr -> fd, &sa, &sa_l)) >= 0) + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketRejectConnection: Closing connection attempt on fd [%d].\n", + ciptr -> fd); +#endif + close(f); + } + } +} + +#endif /* #ifdef TRANS_SERVER */ + +#ifdef TRANS_CLIENT + +void *TRANS(SocketProxyConnInfo) (XtransConnInfo ciptr) +{ + if (_NXProxyConnInfoTab[ciptr->fd] != NULL) + { + return ciptr->priv; + } + + return NULL; +} + +static XtransConnInfo TRANS(SocketCreateConnInfo) () +{ + XtransConnInfo ciptr; + + int fds[2]; + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCreateConnInfo: Going to create the NX connection info.\n"); +#endif + + if ((ciptr = (XtransConnInfo) calloc (1, sizeof(struct _XtransConnInfo))) == NULL) + { + prmsg (1, "SocketCreateConnInfo: malloc failed\n"); + return NULL; + } + + /* + * Create a pair of sockets. We'll communicate with + * the NX proxy by reading and writing to our end. + */ + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCreateConnInfo: Going to create the NX socketpair.\n"); +#endif + + if (socketpair(PF_LOCAL, SOCK_STREAM, 0, fds) < 0) + { + prmsg (1, "SocketCreateConnInfo: socketpair() failed.\n"); + free ((char *) ciptr); + return NULL; + } + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCreateConnInfo: X socket end is [%d] NX proxy end is [%d].\n", + fds[0], fds[1]); +#endif + + /* + * Save in _NXProxyConnInfoTab the local and remote end of + * the socketpair. The remote end will be used by the proxy. + * When the memory-to-memory transport is activated, the + * agent and the proxy don't read or write to the real des- + * criptors but the communication takes place by reading + * and writing to the proxy's buffers. + */ + + ciptr->fd = fds[0]; + + if (ciptr->fd >= NX_PROXY_CONN_LIMIT) + { + prmsg (1, "SocketCreateConnInfo: No space for a new _NXProxyConnInfo for [%d].\n", + ciptr->fd); + free ((char *) ciptr); + return NULL; + } + else if (_NXProxyConnInfoTab[ciptr->fd] != NULL) + { + prmsg (1, "SocketCreateConnInfo: _NXProxyConnInfo for [%d] is not NULL. Exiting.\n", + ciptr->fd); + exit(1); + } + + _NXProxyConnInfoTab[ciptr->fd] = (_NXProxyConnInfo *) calloc(1, sizeof(_NXProxyConnInfo)); + + if (_NXProxyConnInfoTab[ciptr->fd] == NULL) + { + prmsg (1, "SocketCreateConnInfo: Alloc of _NXProxyConnInfo failed.\n"); + free ((char *) ciptr); + return NULL; + } + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCreateConnInfo: Allocated new _NXProxyConnInfo for [%d].\n", + ciptr->fd); +#endif + + _NXProxyConnInfoTab[ciptr->fd]->info = ciptr; + _NXProxyConnInfoTab[ciptr->fd]->local = fds[0]; + _NXProxyConnInfoTab[ciptr->fd]->remote = fds[1]; + _NXProxyConnInfoTab[ciptr->fd]->congestion = 0; + + ciptr->priv = (char *) _NXProxyConnInfoTab[ciptr->fd]; + + return ciptr; +} + +static int TRANS(SocketConnectConnInfo) (XtransConnInfo ciptr, const char *host, const char *port) +{ + int fds[2]; + char display[1024]; + + _NXProxyConnInfo *proxy_conn; + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketConnectConnInfo: Going to connect NX fd [%d] to host [%s] port [%s].\n", + ciptr->fd, host, port); +#endif + + /* + * We should have already created the socket pair. + */ + + proxy_conn = (_NXProxyConnInfo *) ciptr->priv; + + if (proxy_conn == NULL) + { + prmsg (1, "SocketConnectConnInfo: Pointer to _NXProxyConnInfo is NULL. Exiting.\n"); + + exit(1); + } + else if (_NXProxyConnInfoTab[ciptr->fd] != (_NXProxyConnInfo *) ciptr->priv) + { + prmsg (1, "SocketConnectConnInfo: Can't find _NXProxyConnInfo in table. Exiting.\n"); + + exit(1); + } + + if (strlen(host) + strlen(port) + 1 >= 1023) + { + prmsg (1, "SocketConnectConnInfo: Length of NX display string '%s:%s' would exceed %d characters.\n", + host, port, 1023); + + return TRANS_CONNECT_FAILED; + } + + sprintf(display, "%s:%s", host, port); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketConnectConnInfo: Setting close-on-exec flag on local NX descriptor [%d].\n", + proxy_conn -> local); +#endif + +#ifdef F_SETFD +#ifdef FD_CLOEXEC + if (fcntl(proxy_conn -> local, F_SETFD, FD_CLOEXEC) != 0) +#else + if (fcntl(proxy_conn -> local, F_SETFD, 1) != 0) +#endif +#endif + { + prmsg (1, "SocketConnectConnInfo: Cannot set close-on-exec on local NX descriptor [%d].\n", + proxy_conn -> local); + + return TRANS_CONNECT_FAILED; + } + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketConnectConnInfo: Creating the NX transport with display [%s].\n", + display); +#endif + + if (NXTransCreate(NX_FD_ANY, NX_MODE_CLIENT, display) < 0) + { + prmsg (1, "SocketConnectConnInfo: Cannot create the NX transport.\n"); + + return TRANS_CONNECT_FAILED; + } + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketConnectConnInfo: Starting the NX agent with descriptor [%d].\n", + proxy_conn -> remote); +#endif + + fds[0] = proxy_conn -> local; + fds[1] = proxy_conn -> remote; + + NXTransAgent(fds); + + return 0; +} + +static void TRANS(SocketCloseConnInfo) (XtransConnInfo ciptr) +{ + _NXProxyConnInfo *proxy_conn; + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCloseConnInfo: Going to close the NX fd [%d].\n", ciptr->fd); +#endif + + proxy_conn = (_NXProxyConnInfo *) ciptr->priv; + + if (proxy_conn == NULL) + { + prmsg (1, "SocketCloseConnInfo: Pointer to _NXProxyConnInfo is NULL. Exiting.\n"); + + exit(1); + } + else if (ciptr->fd >= NX_PROXY_CONN_LIMIT || + _NXProxyConnInfoTab[ciptr->fd] != (_NXProxyConnInfo *) ciptr->priv) + { + prmsg (1, "SocketCloseConnInfo: Can't find _NXProxyConnInfo in table. Exiting.\n"); + exit(1); + } + else if (_NXProxyConnInfoTab[ciptr->fd] -> info != ciptr || + _NXProxyConnInfoTab[ciptr->fd] -> local != ciptr->fd) + { + prmsg (1, "SocketCloseConnInfo: Invalid _NXProxyConnInfo structure for [%d]. Exiting.\n", + ciptr->fd); + exit(1); + } + else if (proxy_conn->local < 0 || proxy_conn->remote < 0) + { + prmsg (1, "SocketCloseConnInfo: Invalid socket pair in NX connection for [%d]. Exiting.\n", + ciptr->fd); + exit(1); + } + + NXTransClose(ciptr->fd); + + /* + * Get rid of the _NXProxyConnInfo structure. + */ + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCloseConnInfo: Freeing _NXProxyConnInfo structure for [%d].\n", + ciptr->fd); +#endif + + free((char *) _NXProxyConnInfoTab[ciptr->fd]); + + _NXProxyConnInfoTab[ciptr->fd] = NULL; + + ciptr->priv = NULL; + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCloseConnInfo: Should now close the local descriptor [%d].\n", + ciptr->fd); +#endif +} + +#endif /* #ifdef TRANS_CLIENT */ + +#if defined(TRANS_CLIENT) && defined(NX_TRANS_CHANGE) + +/* + * Check the congestion state of the NX transport + * and return 1 if there has been a change. This + * can be extended by adding a few counters track- + * ing the bandwidth usage of the X11 connection. + */ + +int TRANS(SocketCongestionChange) (XtransConnInfo ciptr, int *state) +{ + int congestion; + + _NXProxyConnInfo *proxy_conn; + + prmsg (3, "SocketCongestionChange(%p)\n", (void *) ciptr); + + proxy_conn = (_NXProxyConnInfo *) ciptr->priv; + + if (proxy_conn == NULL) + { +#ifdef NX_TRANS_DEBUG + fprintf(stderr, "SocketCongestionChange: Descriptor [%d] doesn't appear to be a NX connection.\n", + ciptr->fd); +#endif + return 0; + } + +#ifdef NX_TRANS_DEBUG + fprintf(stderr, "SocketCongestionChange: Checking congestion on fd [%d] with old state [%d].\n", + ciptr->fd, proxy_conn->congestion); +#endif + + congestion = NXTransCongestion(ciptr->fd); + + if (congestion != proxy_conn->congestion) + { + proxy_conn->congestion = congestion; + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCongestionChange: Change detected on fd [%d] with new state [%d].\n", + ciptr->fd, proxy_conn->congestion); +#endif + return 1; + } + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketCongestionChange: No change on fd [%d] with current state [%d].\n", + ciptr->fd, congestion); +#endif + return 0; +} + +#endif /* #if defined(TRANS_CLIENT) && defined(NX_TRANS_CHANGE) */ + +#endif /* #ifdef NX_TRANS_SOCKET */ + +/* + * These are some utility function used by the real interface function below. + */ + +static int +TRANS(SocketSelectFamily) (int first, const char *family) + +{ + int i; + + prmsg (3,"SocketSelectFamily(%s)\n", family); + + for (i = first + 1; i < NUMSOCKETFAMILIES;i++) + { + if (!strcmp (family, Sockettrans2devtab[i].transname)) + return i; + } + + return (first == -1 ? -2 : -1); +} + + +/* + * This function gets the local address of the socket and stores it in the + * XtransConnInfo structure for the connection. + */ + +static int +TRANS(SocketINETGetAddr) (XtransConnInfo ciptr) + +{ +#if defined(IPv6) && defined(AF_INET6) + struct sockaddr_storage socknamev6; +#else + struct sockaddr_in socknamev4; +#endif + void *socknamePtr; + SOCKLEN_T namelen; + + prmsg (3,"SocketINETGetAddr(%p)\n", (void *) ciptr); + +#if defined(IPv6) && defined(AF_INET6) + namelen = sizeof(socknamev6); + socknamePtr = &socknamev6; +#else + namelen = sizeof(socknamev4); + socknamePtr = &socknamev4; +#endif + + bzero(socknamePtr, namelen); + + if (getsockname (ciptr->fd,(struct sockaddr *) socknamePtr, + (void *)&namelen) < 0) + { +#ifdef WIN32 + errno = WSAGetLastError(); +#endif + prmsg (1,"SocketINETGetAddr: getsockname() failed: %d\n", + EGET()); + return -1; + } + + /* + * Everything looks good: fill in the XtransConnInfo structure. + */ + + if ((ciptr->addr = malloc (namelen)) == NULL) + { + prmsg (1, + "SocketINETGetAddr: Can't allocate space for the addr\n"); + return -1; + } + +#if defined(IPv6) && defined(AF_INET6) + ciptr->family = ((struct sockaddr *)socknamePtr)->sa_family; +#else + ciptr->family = socknamev4.sin_family; +#endif + ciptr->addrlen = namelen; + memcpy (ciptr->addr, socknamePtr, ciptr->addrlen); + + return 0; +} + + +/* + * This function gets the remote address of the socket and stores it in the + * XtransConnInfo structure for the connection. + */ + +static int +TRANS(SocketINETGetPeerAddr) (XtransConnInfo ciptr) + +{ +#if defined(IPv6) && defined(AF_INET6) + struct sockaddr_storage socknamev6; +#endif + struct sockaddr_in socknamev4; + void *socknamePtr; + SOCKLEN_T namelen; + +#if defined(IPv6) && defined(AF_INET6) + if (ciptr->family == AF_INET6) + { + namelen = sizeof(socknamev6); + socknamePtr = &socknamev6; + } + else +#endif + { + namelen = sizeof(socknamev4); + socknamePtr = &socknamev4; + } + + bzero(socknamePtr, namelen); + + prmsg (3,"SocketINETGetPeerAddr(%p)\n", (void *) ciptr); + + if (getpeername (ciptr->fd, (struct sockaddr *) socknamePtr, + (void *)&namelen) < 0) + { +#ifdef WIN32 + errno = WSAGetLastError(); +#endif + prmsg (1,"SocketINETGetPeerAddr: getpeername() failed: %d\n", + EGET()); + return -1; + } + + /* + * Everything looks good: fill in the XtransConnInfo structure. + */ + + if ((ciptr->peeraddr = malloc (namelen)) == NULL) + { + prmsg (1, + "SocketINETGetPeerAddr: Can't allocate space for the addr\n"); + return -1; + } + + ciptr->peeraddrlen = namelen; + memcpy (ciptr->peeraddr, socknamePtr, ciptr->peeraddrlen); + + return 0; +} + + +static XtransConnInfo +TRANS(SocketOpen) (int i, int type) + +{ + XtransConnInfo ciptr; + + prmsg (3,"SocketOpen(%d,%d)\n", i, type); + + if ((ciptr = calloc (1, sizeof(struct _XtransConnInfo))) == NULL) + { + prmsg (1, "SocketOpen: malloc failed\n"); + return NULL; + } + + if ((ciptr->fd = socket(Sockettrans2devtab[i].family, type, + Sockettrans2devtab[i].protocol)) < 0 +#ifndef WIN32 +#if (defined(X11_t) && !defined(USE_POLL)) || defined(FS_t) || defined(FONT_t) + || ciptr->fd >= sysconf(_SC_OPEN_MAX) +#endif +#endif + ) { +#ifdef WIN32 + errno = WSAGetLastError(); +#endif + prmsg (2, "SocketOpen: socket() failed for %s\n", + Sockettrans2devtab[i].transname); + + free (ciptr); + return NULL; + } + +#ifdef TCP_NODELAY + if (Sockettrans2devtab[i].family == AF_INET +#if defined(IPv6) && defined(AF_INET6) + || Sockettrans2devtab[i].family == AF_INET6 +#endif + ) + { + /* + * turn off TCP coalescence for INET sockets + */ + + int tmp = 1; + setsockopt (ciptr->fd, IPPROTO_TCP, TCP_NODELAY, + (char *) &tmp, sizeof (int)); + } +#endif + + /* + * Some systems provide a really small default buffer size for + * UNIX sockets. Bump it up a bit such that large transfers don't + * proceed at glacial speed. + */ +#ifdef SO_SNDBUF + if (Sockettrans2devtab[i].family == AF_UNIX) + { + SOCKLEN_T len = sizeof (int); + int val; + + if (getsockopt (ciptr->fd, SOL_SOCKET, SO_SNDBUF, + (char *) &val, &len) == 0 && val < 64 * 1024) + { + val = 64 * 1024; + setsockopt (ciptr->fd, SOL_SOCKET, SO_SNDBUF, + (char *) &val, sizeof (int)); + } + } +#endif + + return ciptr; +} + + +#ifdef TRANS_REOPEN + +static XtransConnInfo +TRANS(SocketReopen) (int i _X_UNUSED, int type, int fd, const char *port) + +{ + XtransConnInfo ciptr; + int portlen; + struct sockaddr *addr; + size_t addrlen; + + prmsg (3,"SocketReopen(%d,%d,%s)\n", type, fd, port); + + if (port == NULL) { + prmsg (1, "SocketReopen: port was null!\n"); + return NULL; + } + + portlen = strlen(port) + 1; // include space for trailing null +#ifdef SOCK_MAXADDRLEN + if (portlen < 0 || portlen > (SOCK_MAXADDRLEN + 2)) { + prmsg (1, "SocketReopen: invalid portlen %d\n", portlen); + return NULL; + } + if (portlen < 14) portlen = 14; +#else + if (portlen < 0 || portlen > 14) { + prmsg (1, "SocketReopen: invalid portlen %d\n", portlen); + return NULL; + } +#endif /*SOCK_MAXADDRLEN*/ + + if ((ciptr = calloc (1, sizeof(struct _XtransConnInfo))) == NULL) + { + prmsg (1, "SocketReopen: malloc(ciptr) failed\n"); + return NULL; + } + + ciptr->fd = fd; + + addrlen = portlen + offsetof(struct sockaddr, sa_data); + if ((addr = calloc (1, addrlen)) == NULL) { + prmsg (1, "SocketReopen: malloc(addr) failed\n"); + free (ciptr); + return NULL; + } + ciptr->addr = (char *) addr; + ciptr->addrlen = addrlen; + + if ((ciptr->peeraddr = calloc (1, addrlen)) == NULL) { + prmsg (1, "SocketReopen: malloc(portaddr) failed\n"); + free (addr); + free (ciptr); + return NULL; + } + ciptr->peeraddrlen = addrlen; + + /* Initialize ciptr structure as if it were a normally-opened unix socket */ + ciptr->flags = TRANS_LOCAL | TRANS_NOUNLINK; +#ifdef BSD44SOCKETS + addr->sa_len = addrlen; +#endif + addr->sa_family = AF_UNIX; +#if defined(HAVE_STRLCPY) || defined(HAS_STRLCPY) + strlcpy(addr->sa_data, port, portlen); +#else + strncpy(addr->sa_data, port, portlen); +#endif + ciptr->family = AF_UNIX; + memcpy(ciptr->peeraddr, ciptr->addr, addrlen); + ciptr->port = rindex(addr->sa_data, ':'); + if (ciptr->port == NULL) { + if (is_numeric(addr->sa_data)) { + ciptr->port = addr->sa_data; + } + } else if (ciptr->port[0] == ':') { + ciptr->port++; + } + /* port should now point to portnum or NULL */ + return ciptr; +} + +#endif /* TRANS_REOPEN */ + + +/* + * These functions are the interface supplied in the Xtransport structure + */ + +#ifdef TRANS_CLIENT + +static XtransConnInfo +TRANS(SocketOpenCOTSClientBase) (const char *transname, const char *protocol, + const char *host, const char *port, int previndex) +{ + XtransConnInfo ciptr; + int i = previndex; + + prmsg (2, "SocketOpenCOTSClient(%s,%s,%s)\n", + protocol, host, port); + + SocketInitOnce(); + + while ((i = TRANS(SocketSelectFamily) (i, transname)) >= 0) { + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + if ((!strcmp(protocol, "local") || !strcmp(protocol, "nx")) && + (!strcasecmp(host, "nx") || !strncasecmp(host, "nx,", 3))) + { + ciptr = TRANS(SocketCreateConnInfo) (); + + if (ciptr == NULL) + { + prmsg (1, "SocketOpenCOTSClient: Unable to create the NX connection info for %s.\n", + transname); + + return NULL; + } + + ciptr->index = i; + + return ciptr; + } + +#endif /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ + + if ((ciptr = TRANS(SocketOpen) ( + i, Sockettrans2devtab[i].devcotsname)) != NULL) { + /* Save the index for later use */ + + ciptr->index = i; + break; + } + } + if (i < 0) { + if (i == -1) + prmsg (1,"SocketOpenCOTSClient: Unable to open socket for %s\n", + transname); + else + prmsg (1,"SocketOpenCOTSClient: Unable to determine socket type for %s\n", + transname); + return NULL; + } + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + ciptr->priv = NULL; + +#endif + + return ciptr; +} + +static XtransConnInfo +TRANS(SocketOpenCOTSClient) (Xtransport *thistrans, const char *protocol, + const char *host, const char *port) +{ + return TRANS(SocketOpenCOTSClientBase)( + thistrans->TransName, protocol, host, port, -1); +} + + +#endif /* TRANS_CLIENT */ + + +#ifdef TRANS_SERVER + +static XtransConnInfo +TRANS(SocketOpenCOTSServer) (Xtransport *thistrans, const char *protocol, + const char *host, const char *port) + +{ + XtransConnInfo ciptr; + int i = -1; + + prmsg (2,"SocketOpenCOTSServer(%s,%s,%s)\n", protocol, host, port); + + SocketInitOnce(); + + while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) { + if ((ciptr = TRANS(SocketOpen) ( + i, Sockettrans2devtab[i].devcotsname)) != NULL) + break; + } + if (i < 0) { + if (i == -1) + prmsg (1,"SocketOpenCOTSServer: Unable to open socket for %s\n", + thistrans->TransName); + else + prmsg (1,"SocketOpenCOTSServer: Unable to determine socket type for %s\n", + thistrans->TransName); + return NULL; + } + + /* + * Using this prevents the bind() check for an existing server listening + * on the same port, but it is required for other reasons. + */ +#ifdef SO_REUSEADDR + + /* + * SO_REUSEADDR only applied to AF_INET && AF_INET6 + */ + + if (Sockettrans2devtab[i].family == AF_INET +#if defined(IPv6) && defined(AF_INET6) + || Sockettrans2devtab[i].family == AF_INET6 +#endif + ) + { + int one = 1; + setsockopt (ciptr->fd, SOL_SOCKET, SO_REUSEADDR, + (char *) &one, sizeof (int)); + } +#endif +#ifdef IPV6_V6ONLY + if (Sockettrans2devtab[i].family == AF_INET6) + { + int one = 1; + setsockopt(ciptr->fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(int)); + } +#endif + /* Save the index for later use */ + + ciptr->index = i; + + return ciptr; +} + +#endif /* TRANS_SERVER */ + + +#ifdef TRANS_REOPEN + +static XtransConnInfo +TRANS(SocketReopenCOTSServer) (Xtransport *thistrans, int fd, const char *port) + +{ + XtransConnInfo ciptr; + int i = -1; + + prmsg (2, + "SocketReopenCOTSServer(%d, %s)\n", fd, port); + + SocketInitOnce(); + + while ((i = TRANS(SocketSelectFamily) (i, thistrans->TransName)) >= 0) { + if ((ciptr = TRANS(SocketReopen) ( + i, Sockettrans2devtab[i].devcotsname, fd, port)) != NULL) + break; + } + if (i < 0) { + if (i == -1) + prmsg (1,"SocketReopenCOTSServer: Unable to open socket for %s\n", + thistrans->TransName); + else + prmsg (1,"SocketReopenCOTSServer: Unable to determine socket type for %s\n", + thistrans->TransName); + return NULL; + } + + /* Save the index for later use */ + + ciptr->index = i; + + return ciptr; +} + +#endif /* TRANS_REOPEN */ + + +static int +TRANS(SocketSetOption) (XtransConnInfo ciptr, int option, int arg) + +{ + prmsg (2,"SocketSetOption(%d,%d,%d)\n", ciptr->fd, option, arg); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "SocketSetOption: WARNING! Not setting option [%d] with value [%d] on descriptor [%d].\n", + option, arg, ciptr -> fd); +#endif + + return -1; +} + +#ifdef UNIXCONN +static int +set_sun_path(const char *port, const char *upath, char *path, int abstract) +{ + struct sockaddr_un s; + int maxlen = sizeof(s.sun_path) - 1; + const char *at = ""; + + if (!port || !*port || !path) + return -1; + +#ifdef HAVE_ABSTRACT_SOCKETS + if (port[0] == '@') + upath = ""; + else if (abstract) + at = "@"; +#endif + + if (*port == '/') /* a full pathname */ + upath = ""; + + if (strlen(port) + strlen(upath) > maxlen) + return -1; + snprintf(path, sizeof(s.sun_path), "%s%s%s", at, upath, port); + return 0; +} +#endif + +#ifdef TRANS_SERVER + +static int +TRANS(SocketCreateListener) (XtransConnInfo ciptr, + struct sockaddr *sockname, + int socknamelen, unsigned int flags) + +{ + SOCKLEN_T namelen = socknamelen; + int fd = ciptr->fd; + int retry; + + prmsg (3, "SocketCreateListener(%p,%d)\n", (void *) ciptr, fd); + + if (Sockettrans2devtab[ciptr->index].family == AF_INET +#if defined(IPv6) && defined(AF_INET6) + || Sockettrans2devtab[ciptr->index].family == AF_INET6 +#endif + ) + retry = 20; + else + retry = 0; + +#if defined(NX_TRANS_SOCKET) && defined(NX_TRANS_TEST) + fprintf(stderr, "SocketCreateListener: Creating listener for ciptr at [%p] on path [%s].\n", + (void *) ciptr, ((struct sockaddr_un *) sockname)->sun_family == AF_UNIX ? + ((struct sockaddr_un *) sockname)->sun_path : "TCP"); +#endif + while (bind (fd, (struct sockaddr *) sockname, namelen) < 0) + { + if (errno == EADDRINUSE) { + if (flags & ADDR_IN_USE_ALLOWED) + break; + else + return TRANS_ADDR_IN_USE; + } + + if (retry-- == 0) { + prmsg (1, "SocketCreateListener: failed to bind listener\n"); + close (fd); + return TRANS_CREATE_LISTENER_FAILED; + } +#ifdef SO_REUSEADDR + sleep (1); +#else + sleep (10); +#endif /* SO_REUSEDADDR */ + } + + if (Sockettrans2devtab[ciptr->index].family == AF_INET +#if defined(IPv6) && defined(AF_INET6) + || Sockettrans2devtab[ciptr->index].family == AF_INET6 +#endif + ) { +#ifdef SO_DONTLINGER + setsockopt (fd, SOL_SOCKET, SO_DONTLINGER, (char *) NULL, 0); +#else +#ifdef SO_LINGER + { + static int linger[2] = { 0, 0 }; + setsockopt (fd, SOL_SOCKET, SO_LINGER, + (char *) linger, sizeof (linger)); + } +#endif +#endif +} + + if (listen (fd, BACKLOG) < 0) + { + prmsg (1, "SocketCreateListener: listen() failed\n"); + close (fd); + return TRANS_CREATE_LISTENER_FAILED; + } + + /* Set a flag to indicate that this connection is a listener */ + + ciptr->flags = 1 | (ciptr->flags & TRANS_KEEPFLAGS); + +#if defined(NX_TRANS_SOCKET) && defined(NX_TRANS_TEST) + fprintf(stderr, "SocketCreateListener: Set flags to [%d] for ciptr [%p].\n", + ciptr->flags, (void *) ciptr); +#endif + + return 0; +} + +#ifdef TCPCONN +static int +TRANS(SocketINETCreateListener) (XtransConnInfo ciptr, const char *port, + unsigned int flags) + +{ +#if defined(IPv6) && defined(AF_INET6) + struct sockaddr_storage sockname; +#else + struct sockaddr_in sockname; +#endif + unsigned short sport; + SOCKLEN_T namelen = sizeof(sockname); + int status; + long tmpport; +#ifdef XTHREADS_NEEDS_BYNAMEPARAMS + _Xgetservbynameparams sparams; +#endif + struct servent *servp; + +#ifdef X11_t + char portbuf[PORTBUFSIZE]; +#endif + + prmsg (2, "SocketINETCreateListener(%s)\n", port); + +#ifdef X11_t + /* + * X has a well known port, that is transport dependent. It is easier + * to handle it here, than try and come up with a transport independent + * representation that can be passed in and resolved the usual way. + * + * The port that is passed here is really a string containing the idisplay + * from ConnectDisplay(). + */ + + if (is_numeric (port)) + { + /* fixup the server port address */ + tmpport = X_TCP_PORT + strtol (port, (char**)NULL, 10); + snprintf (portbuf, sizeof(portbuf), "%lu", tmpport); + port = portbuf; + } +#endif + + if (port && *port) + { + /* Check to see if the port string is just a number (handles X11) */ + + if (!is_numeric (port)) + { + if ((servp = _XGetservbyname (port,"tcp",sparams)) == NULL) + { + prmsg (1, + "SocketINETCreateListener: Unable to get service for %s\n", + port); + return TRANS_CREATE_LISTENER_FAILED; + } + /* we trust getservbyname to return a valid number */ + sport = servp->s_port; + } + else + { + tmpport = strtol (port, (char**)NULL, 10); + /* + * check that somehow the port address isn't negative or in + * the range of reserved port addresses. This can happen and + * be very bad if the server is suid-root and the user does + * something (dumb) like `X :60049`. + */ + if (tmpport < 1024 || tmpport > USHRT_MAX) + return TRANS_CREATE_LISTENER_FAILED; + + sport = (unsigned short) tmpport; + } + } + else + sport = 0; + + bzero(&sockname, sizeof(sockname)); +#if defined(IPv6) && defined(AF_INET6) + if (Sockettrans2devtab[ciptr->index].family == AF_INET) { + namelen = sizeof (struct sockaddr_in); +#ifdef BSD44SOCKETS + ((struct sockaddr_in *)&sockname)->sin_len = namelen; +#endif + ((struct sockaddr_in *)&sockname)->sin_family = AF_INET; + ((struct sockaddr_in *)&sockname)->sin_port = htons(sport); + ((struct sockaddr_in *)&sockname)->sin_addr.s_addr = htonl(INADDR_ANY); + } else { + namelen = sizeof (struct sockaddr_in6); +#ifdef SIN6_LEN + ((struct sockaddr_in6 *)&sockname)->sin6_len = sizeof(sockname); +#endif + ((struct sockaddr_in6 *)&sockname)->sin6_family = AF_INET6; + ((struct sockaddr_in6 *)&sockname)->sin6_port = htons(sport); + ((struct sockaddr_in6 *)&sockname)->sin6_addr = in6addr_any; + } +#else +#ifdef BSD44SOCKETS + sockname.sin_len = sizeof (sockname); +#endif + sockname.sin_family = AF_INET; + sockname.sin_port = htons (sport); + sockname.sin_addr.s_addr = htonl (INADDR_ANY); +#endif + + if ((status = TRANS(SocketCreateListener) (ciptr, + (struct sockaddr *) &sockname, namelen, flags)) < 0) + { + prmsg (1, + "SocketINETCreateListener: ...SocketCreateListener() failed\n"); + return status; + } + + if (TRANS(SocketINETGetAddr) (ciptr) < 0) + { + prmsg (1, + "SocketINETCreateListener: ...SocketINETGetAddr() failed\n"); + return TRANS_CREATE_LISTENER_FAILED; + } + + return 0; +} + +#endif /* TCPCONN */ + + +#ifdef UNIXCONN + +static int +TRANS(SocketUNIXCreateListener) (XtransConnInfo ciptr, const char *port, + unsigned int flags) + +{ + struct sockaddr_un sockname; + int namelen; + int oldUmask; + int status; + unsigned int mode; + char tmpport[108]; + + int abstract = 0; +#ifdef HAVE_ABSTRACT_SOCKETS + abstract = ciptr->transptr->flags & TRANS_ABSTRACT; +#endif + + prmsg (2, "SocketUNIXCreateListener(%s)\n", + port ? port : "NULL"); + + /* Make sure the directory is created */ + + oldUmask = umask (0); + +#ifdef UNIX_DIR +#ifdef HAS_STICKY_DIR_BIT + mode = 01777; +#else + mode = 0777; +#endif +#ifdef NX_TRANS_SOCKET + if (!abstract && trans_mkdir(_NXGetUnixDir(UNIX_DIR), mode) == -1) { + prmsg (1, "SocketUNIXCreateListener: mkdir(%s) failed, errno = %d\n", + _NXGetUnixDir(UNIX_DIR), errno); +#else + if (!abstract && trans_mkdir(UNIX_DIR, mode) == -1) { + prmsg (1, "SocketUNIXCreateListener: mkdir(%s) failed, errno = %d\n", + UNIX_DIR, errno); +#endif + (void) umask (oldUmask); + return TRANS_CREATE_LISTENER_FAILED; + } +#endif + + memset(&sockname, 0, sizeof(sockname)); + sockname.sun_family = AF_UNIX; + + if (!(port && *port)) { + snprintf (tmpport, sizeof(tmpport), "%s%ld", UNIX_PATH, (long)getpid()); + port = tmpport; + } +#ifdef NX_TRANS_SOCKET + if (set_sun_path(port, _NXGetUnixPath(UNIX_PATH), sockname.sun_path, abstract) != 0) { +#else + if (set_sun_path(port, UNIX_PATH, sockname.sun_path, abstract) != 0) { +#endif + prmsg (1, "SocketUNIXCreateListener: path too long\n"); + return TRANS_CREATE_LISTENER_FAILED; + } + +#if (defined(BSD44SOCKETS) || defined(__UNIXWARE__)) + sockname.sun_len = strlen(sockname.sun_path); +#endif + +#if defined(BSD44SOCKETS) || defined(SUN_LEN) + namelen = SUN_LEN(&sockname); +#else + namelen = strlen(sockname.sun_path) + offsetof(struct sockaddr_un, sun_path); +#endif + +#if defined(NX_TRANS_SOCKET) && defined(NX_TRANS_TEST) + fprintf(stderr, "SocketUNIXCreateListener: Unlinking path [%s] for ciptr at [%p].\n", + sockname.sun_path, (void *) ciptr); +#endif + if (abstract) { + sockname.sun_path[0] = '\0'; + namelen = offsetof(struct sockaddr_un, sun_path) + 1 + strlen(&sockname.sun_path[1]); + } + else + unlink (sockname.sun_path); + + if ((status = TRANS(SocketCreateListener) (ciptr, + (struct sockaddr *) &sockname, namelen, flags)) < 0) + { + prmsg (1, + "SocketUNIXCreateListener: ...SocketCreateListener() failed\n"); + (void) umask (oldUmask); + return status; + } + + /* + * Now that the listener is esablished, create the addr info for + * this connection. getpeername() doesn't work for UNIX Domain Sockets + * on some systems (hpux at least), so we will just do it manually, instead + * of calling something like TRANS(SocketUNIXGetAddr). + */ + + namelen = sizeof (sockname); /* this will always make it the same size */ + + if ((ciptr->addr = malloc (namelen)) == NULL) + { + prmsg (1, + "SocketUNIXCreateListener: Can't allocate space for the addr\n"); + (void) umask (oldUmask); + return TRANS_CREATE_LISTENER_FAILED; + } + + if (abstract) + sockname.sun_path[0] = '@'; + + ciptr->family = sockname.sun_family; + ciptr->addrlen = namelen; + memcpy (ciptr->addr, &sockname, ciptr->addrlen); + + (void) umask (oldUmask); + + return 0; +} + + +static int +TRANS(SocketUNIXResetListener) (XtransConnInfo ciptr) + +{ + /* + * See if the unix domain socket has disappeared. If it has, recreate it. + */ + + struct sockaddr_un *unsock = (struct sockaddr_un *) ciptr->addr; + struct stat statb; + int status = TRANS_RESET_NOOP; + unsigned int mode; + int abstract = 0; +#ifdef HAVE_ABSTRACT_SOCKETS + abstract = ciptr->transptr->flags & TRANS_ABSTRACT; +#endif + + prmsg (3, "SocketUNIXResetListener(%p,%d)\n", (void *) ciptr, ciptr->fd); + + if (!abstract && ( + stat (unsock->sun_path, &statb) == -1 || + ((statb.st_mode & S_IFMT) != +#if defined(NCR) || defined(SCO325) || !defined(S_IFSOCK) + S_IFIFO +#else + S_IFSOCK +#endif + ))) + { + int oldUmask = umask (0); + +#ifdef UNIX_DIR +#ifdef HAS_STICKY_DIR_BIT + mode = 01777; +#else + mode = 0777; +#endif +#ifdef NX_TRANS_SOCKET + if (trans_mkdir(_NXGetUnixDir(UNIX_DIR), mode) == -1) { + prmsg (1, "SocketUNIXResetListener: mkdir(%s) failed, errno = %d\n", + _NXGetUnixDir(UNIX_DIR), errno); +#else + if (trans_mkdir(UNIX_DIR, mode) == -1) { + prmsg (1, "SocketUNIXResetListener: mkdir(%s) failed, errno = %d\n", + UNIX_DIR, errno); +#endif + (void) umask (oldUmask); + return TRANS_RESET_FAILURE; + } +#endif + + close (ciptr->fd); + unlink (unsock->sun_path); + + if ((ciptr->fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) + { + TRANS(FreeConnInfo) (ciptr); + (void) umask (oldUmask); + return TRANS_RESET_FAILURE; + } + + if (bind (ciptr->fd, (struct sockaddr *) unsock, ciptr->addrlen) < 0) + { + close (ciptr->fd); + TRANS(FreeConnInfo) (ciptr); + return TRANS_RESET_FAILURE; + } + + if (listen (ciptr->fd, BACKLOG) < 0) + { + close (ciptr->fd); + TRANS(FreeConnInfo) (ciptr); + (void) umask (oldUmask); + return TRANS_RESET_FAILURE; + } + + umask (oldUmask); + + status = TRANS_RESET_NEW_FD; + } + + return status; +} + +#endif /* UNIXCONN */ + + +#ifdef TCPCONN + +static XtransConnInfo +TRANS(SocketINETAccept) (XtransConnInfo ciptr, int *status) + +{ + XtransConnInfo newciptr; + struct sockaddr_in sockname; + SOCKLEN_T namelen = sizeof(sockname); + + prmsg (2, "SocketINETAccept(%p,%d)\n", (void *) ciptr, ciptr->fd); + + if ((newciptr = calloc (1, sizeof(struct _XtransConnInfo))) == NULL) + { + prmsg (1, "SocketINETAccept: malloc failed\n"); + *status = TRANS_ACCEPT_BAD_MALLOC; + return NULL; + } + + if ((newciptr->fd = accept (ciptr->fd, + (struct sockaddr *) &sockname, (void *)&namelen)) < 0) + { +#ifdef WIN32 + errno = WSAGetLastError(); +#endif + prmsg (1, "SocketINETAccept: accept() failed\n"); + free (newciptr); + *status = TRANS_ACCEPT_FAILED; + return NULL; + } + +#ifdef TCP_NODELAY + { + /* + * turn off TCP coalescence for INET sockets + */ + + int tmp = 1; + setsockopt (newciptr->fd, IPPROTO_TCP, TCP_NODELAY, + (char *) &tmp, sizeof (int)); + } +#endif + + /* + * Get this address again because the transport may give a more + * specific address now that a connection is established. + */ + + if (TRANS(SocketINETGetAddr) (newciptr) < 0) + { + prmsg (1, + "SocketINETAccept: ...SocketINETGetAddr() failed:\n"); + close (newciptr->fd); + free (newciptr); + *status = TRANS_ACCEPT_MISC_ERROR; + return NULL; + } + + if (TRANS(SocketINETGetPeerAddr) (newciptr) < 0) + { + prmsg (1, + "SocketINETAccept: ...SocketINETGetPeerAddr() failed:\n"); + close (newciptr->fd); + if (newciptr->addr) free (newciptr->addr); + free (newciptr); + *status = TRANS_ACCEPT_MISC_ERROR; + return NULL; + } + + *status = 0; + + return newciptr; +} + +#endif /* TCPCONN */ + + +#ifdef UNIXCONN +static XtransConnInfo +TRANS(SocketUNIXAccept) (XtransConnInfo ciptr, int *status) + +{ + XtransConnInfo newciptr; + struct sockaddr_un sockname; + SOCKLEN_T namelen = sizeof sockname; + + prmsg (2, "SocketUNIXAccept(%p,%d)\n", (void *) ciptr, ciptr->fd); + + if ((newciptr = calloc (1, sizeof(struct _XtransConnInfo))) == NULL) + { + prmsg (1, "SocketUNIXAccept: malloc() failed\n"); + *status = TRANS_ACCEPT_BAD_MALLOC; + return NULL; + } + + if ((newciptr->fd = accept (ciptr->fd, + (struct sockaddr *) &sockname, (void *)&namelen)) < 0) + { + prmsg (1, "SocketUNIXAccept: accept() failed\n"); + free (newciptr); + *status = TRANS_ACCEPT_FAILED; + return NULL; + } + + ciptr->addrlen = namelen; + /* + * Get the socket name and the peer name from the listener socket, + * since this is unix domain. + */ + + if ((newciptr->addr = malloc (ciptr->addrlen)) == NULL) + { + prmsg (1, + "SocketUNIXAccept: Can't allocate space for the addr\n"); + close (newciptr->fd); + free (newciptr); + *status = TRANS_ACCEPT_BAD_MALLOC; + return NULL; + } + + /* + * if the socket is abstract, we already modified the address to have a + * @ instead of the initial NUL, so no need to do that again here. + */ + + newciptr->addrlen = ciptr->addrlen; + memcpy (newciptr->addr, ciptr->addr, newciptr->addrlen); + + if ((newciptr->peeraddr = malloc (ciptr->addrlen)) == NULL) + { + prmsg (1, + "SocketUNIXAccept: Can't allocate space for the addr\n"); + close (newciptr->fd); + if (newciptr->addr) free (newciptr->addr); + free (newciptr); + *status = TRANS_ACCEPT_BAD_MALLOC; + return NULL; + } + + newciptr->peeraddrlen = ciptr->addrlen; + memcpy (newciptr->peeraddr, ciptr->addr, newciptr->addrlen); + + newciptr->family = AF_UNIX; + + *status = 0; + + return newciptr; +} + +#endif /* UNIXCONN */ + +#endif /* TRANS_SERVER */ + + +#ifdef TRANS_CLIENT + +#ifdef TCPCONN + +#if defined(IPv6) && defined(AF_INET6) +struct addrlist { + struct addrinfo * addr; + struct addrinfo * firstaddr; + char port[PORTBUFSIZE]; + char host[MAXHOSTNAMELEN]; +}; +static struct addrlist *addrlist = NULL; +#endif + + +static int +TRANS(SocketINETConnect) (XtransConnInfo ciptr, + const char *host, const char *port) + +{ + struct sockaddr * socketaddr = NULL; + int socketaddrlen = 0; + int res; +#if defined(IPv6) && defined(AF_INET6) + struct addrinfo hints; + char ntopbuf[INET6_ADDRSTRLEN]; + int resetonce = 0; +#else + struct sockaddr_in sockname; + struct hostent *hostp; + struct servent *servp; + unsigned long tmpaddr; +#endif +#ifdef XTHREADS_NEEDS_BYNAMEPARAMS + _Xgethostbynameparams hparams; + _Xgetservbynameparams sparams; +#endif +#ifdef X11_t + char portbuf[PORTBUFSIZE]; +#endif + + char hostnamebuf[256]; /* tmp space */ + + prmsg (2,"SocketINETConnect(%d,%s,%s)\n", ciptr->fd, host, port); + + if (!host) + { + hostnamebuf[0] = '\0'; + (void) TRANS(GetHostname) (hostnamebuf, sizeof hostnamebuf); + host = hostnamebuf; + } + +#ifdef X11_t + /* + * X has a well known port, that is transport dependent. It is easier + * to handle it here, than try and come up with a transport independent + * representation that can be passed in and resolved the usual way. + * + * The port that is passed here is really a string containing the idisplay + * from ConnectDisplay(). + */ + + if (is_numeric (port)) + { + long tmpport = X_TCP_PORT + strtol (port, (char**)NULL, 10); + snprintf (portbuf, sizeof(portbuf), "%lu", tmpport); + port = portbuf; + } +#endif + +#if defined(IPv6) && defined(AF_INET6) + { + if (addrlist != NULL) { + if (strcmp(host,addrlist->host) || strcmp(port,addrlist->port)) { + if (addrlist->firstaddr) + freeaddrinfo(addrlist->firstaddr); + addrlist->firstaddr = NULL; + } + } else { + addrlist = malloc(sizeof(struct addrlist)); + addrlist->firstaddr = NULL; + } + + if (addrlist->firstaddr == NULL) { + strncpy(addrlist->port, port, sizeof(addrlist->port)); + addrlist->port[sizeof(addrlist->port) - 1] = '\0'; + strncpy(addrlist->host, host, sizeof(addrlist->host)); + addrlist->host[sizeof(addrlist->host) - 1] = '\0'; + + bzero(&hints,sizeof(hints)); + hints.ai_socktype = Sockettrans2devtab[ciptr->index].devcotsname; + + res = getaddrinfo(host,port,&hints,&addrlist->firstaddr); + if (res != 0) { + prmsg (1, "SocketINETConnect() can't get address " + "for %s:%s: %s\n", host, port, gai_strerror(res)); + ESET(EINVAL); + return TRANS_CONNECT_FAILED; + } + for (res = 0, addrlist->addr = addrlist->firstaddr; + addrlist->addr ; res++) { + addrlist->addr = addrlist->addr->ai_next; + } + prmsg(4,"Got New Address list with %d addresses\n", res); + res = 0; + addrlist->addr = NULL; + } + + while (socketaddr == NULL) { + if (addrlist->addr == NULL) { + if (resetonce) { + /* Already checked entire list - no usable addresses */ + prmsg (1, "SocketINETConnect() no usable address " + "for %s:%s\n", host, port); + return TRANS_CONNECT_FAILED; + } else { + /* Go back to beginning of list */ + resetonce = 1; + addrlist->addr = addrlist->firstaddr; + } + } + + socketaddr = addrlist->addr->ai_addr; + socketaddrlen = addrlist->addr->ai_addrlen; + + if (addrlist->addr->ai_family == AF_INET) { + struct sockaddr_in *sin = (struct sockaddr_in *) socketaddr; + + prmsg (4,"SocketINETConnect() sockname.sin_addr = %s\n", + inet_ntop(addrlist->addr->ai_family,&sin->sin_addr, + ntopbuf,sizeof(ntopbuf))); + + prmsg (4,"SocketINETConnect() sockname.sin_port = %d\n", + ntohs(sin->sin_port)); + + if (Sockettrans2devtab[ciptr->index].family == AF_INET6) { + if (strcmp(Sockettrans2devtab[ciptr->index].transname, + "tcp") == 0) { + XtransConnInfo newciptr; + + /* + * Our socket is an IPv6 socket, but the address is + * IPv4. Close it and get an IPv4 socket. This is + * needed for IPv4 connections to work on platforms + * that don't allow IPv4 over IPv6 sockets. + */ + TRANS(SocketINETClose)(ciptr); + newciptr = TRANS(SocketOpenCOTSClientBase)( + "tcp", "tcp", host, port, ciptr->index); + if (newciptr) + ciptr->fd = newciptr->fd; + if (!newciptr || + Sockettrans2devtab[newciptr->index].family != + AF_INET) { + socketaddr = NULL; + prmsg (4,"SocketINETConnect() Cannot get IPv4 " + " socketfor IPv4 address\n"); + } + if (newciptr) + free(newciptr); + } else { + socketaddr = NULL; + prmsg (4,"SocketINETConnect Skipping IPv4 address\n"); + } + } + } else if (addrlist->addr->ai_family == AF_INET6) { + struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) socketaddr; + + prmsg (4,"SocketINETConnect() sockname.sin6_addr = %s\n", + inet_ntop(addrlist->addr->ai_family, + &sin6->sin6_addr,ntopbuf,sizeof(ntopbuf))); + prmsg (4,"SocketINETConnect() sockname.sin6_port = %d\n", + ntohs(sin6->sin6_port)); + + if (Sockettrans2devtab[ciptr->index].family == AF_INET) { + if (strcmp(Sockettrans2devtab[ciptr->index].transname, + "tcp") == 0) { + XtransConnInfo newciptr; + + /* + * Close the IPv4 socket and try to open an IPv6 socket. + */ + TRANS(SocketINETClose)(ciptr); + newciptr = TRANS(SocketOpenCOTSClientBase)( + "tcp", "tcp", host, port, -1); + if (newciptr) + ciptr->fd = newciptr->fd; + if (!newciptr || + Sockettrans2devtab[newciptr->index].family != + AF_INET6) { + socketaddr = NULL; + prmsg (4,"SocketINETConnect() Cannot get IPv6 " + "socket for IPv6 address\n"); + } + if (newciptr) + free(newciptr); + } + else + { + socketaddr = NULL; + prmsg (4,"SocketINETConnect() Skipping IPv6 address\n"); + } + } + } else { + socketaddr = NULL; /* Unsupported address type */ + } + if (socketaddr == NULL) { + addrlist->addr = addrlist->addr->ai_next; + } + } + } +#else + { + /* + * Build the socket name. + */ + +#ifdef BSD44SOCKETS + sockname.sin_len = sizeof (struct sockaddr_in); +#endif + sockname.sin_family = AF_INET; + + /* + * fill in sin_addr + */ + +#ifndef INADDR_NONE +#define INADDR_NONE ((in_addr_t) 0xffffffff) +#endif + + /* check for ww.xx.yy.zz host string */ + + if (isascii (host[0]) && isdigit (host[0])) { + tmpaddr = inet_addr (host); /* returns network byte order */ + } else { + tmpaddr = INADDR_NONE; + } + + prmsg (4,"SocketINETConnect() inet_addr(%s) = %x\n", host, tmpaddr); + + if (tmpaddr == INADDR_NONE) { + if ((hostp = _XGethostbyname(host,hparams)) == NULL) { + prmsg (1,"SocketINETConnect: Can't get address for %s\n", + host); + ESET(EINVAL); + return TRANS_CONNECT_FAILED; + } + if (hostp->h_addrtype != AF_INET) { /* is IP host? */ + prmsg (1,"SocketINETConnect: not INET host%s\n", host); + ESET(EPROTOTYPE); + return TRANS_CONNECT_FAILED; + } + + memcpy ((char *) &sockname.sin_addr, (char *) hostp->h_addr, + sizeof (sockname.sin_addr)); + + } else { + sockname.sin_addr.s_addr = tmpaddr; + } + + /* + * fill in sin_port + */ + + /* Check for number in the port string */ + + if (!is_numeric (port)) { + if ((servp = _XGetservbyname (port,"tcp",sparams)) == NULL) { + prmsg (1,"SocketINETConnect: can't get service for %s\n", + port); + return TRANS_CONNECT_FAILED; + } + sockname.sin_port = htons (servp->s_port); + } else { + long tmpport = strtol (port, (char**)NULL, 10); + if (tmpport < 1024 || tmpport > USHRT_MAX) + return TRANS_CONNECT_FAILED; + sockname.sin_port = htons (((unsigned short) tmpport)); + } + + prmsg (4,"SocketINETConnect: sockname.sin_port = %d\n", + ntohs(sockname.sin_port)); + socketaddr = (struct sockaddr *) &sockname; + socketaddrlen = sizeof(sockname); + } +#endif + + /* + * Turn on socket keepalive so the client process will eventually + * be notified with a SIGPIPE signal if the display server fails + * to respond to a periodic transmission of messages + * on the connected socket. + * This is useful to avoid hung application processes when the + * processes are not spawned from the xdm session and + * the display server terminates abnormally. + * (Someone turned off the power switch.) + */ + + { + int tmp = 1; + setsockopt (ciptr->fd, SOL_SOCKET, SO_KEEPALIVE, + (char *) &tmp, sizeof (int)); + } + + /* + * Do the connect() + */ + + if (connect (ciptr->fd, socketaddr, socketaddrlen ) < 0) + { +#ifdef WIN32 + int olderrno = WSAGetLastError(); +#else + int olderrno = errno; +#endif + + /* + * If the error was ECONNREFUSED, the server may be overloaded + * and we should try again. + * + * If the error was EWOULDBLOCK or EINPROGRESS then the socket + * was non-blocking and we should poll using select + * + * If the error was EINTR, the connect was interrupted and we + * should try again. + * + * If multiple addresses are found for a host then we should + * try to connect again with a different address for a larger + * number of errors that made us quit before, since those + * could be caused by trying to use an IPv6 address to contact + * a machine with an IPv4-only server or other reasons that + * only affect one of a set of addresses. + */ + + if (olderrno == ECONNREFUSED || olderrno == EINTR +#if defined(IPv6) && defined(AF_INET6) + || (((addrlist->addr->ai_next != NULL) || + (addrlist->addr != addrlist->firstaddr)) && + (olderrno == ENETUNREACH || olderrno == EAFNOSUPPORT || + olderrno == EADDRNOTAVAIL || olderrno == ETIMEDOUT +#if defined(EHOSTDOWN) + || olderrno == EHOSTDOWN +#endif + )) +#endif + ) + res = TRANS_TRY_CONNECT_AGAIN; + else if (olderrno == EWOULDBLOCK || olderrno == EINPROGRESS) + res = TRANS_IN_PROGRESS; + else + { + prmsg (2,"SocketINETConnect: Can't connect: errno = %d\n", + olderrno); + + res = TRANS_CONNECT_FAILED; + } + } else { + res = 0; + + + /* + * Sync up the address fields of ciptr. + */ + + if (TRANS(SocketINETGetAddr) (ciptr) < 0) + { + prmsg (1, + "SocketINETConnect: ...SocketINETGetAddr() failed:\n"); + res = TRANS_CONNECT_FAILED; + } + + else if (TRANS(SocketINETGetPeerAddr) (ciptr) < 0) + { + prmsg (1, + "SocketINETConnect: ...SocketINETGetPeerAddr() failed:\n"); + res = TRANS_CONNECT_FAILED; + } + } + +#if defined(IPv6) && defined(AF_INET6) + if (res != 0) { + addrlist->addr = addrlist->addr->ai_next; + } +#endif + + return res; +} + +#endif /* TCPCONN */ + + + +#ifdef UNIXCONN + +/* + * Make sure 'host' is really local. + */ + +static int +UnixHostReallyLocal (const char *host) + +{ + char hostnamebuf[256]; + + TRANS(GetHostname) (hostnamebuf, sizeof (hostnamebuf)); + + if (strcmp (hostnamebuf, host) == 0) + { + return (1); + } else { +#if defined(IPv6) && defined(AF_INET6) + struct addrinfo *localhostaddr; + struct addrinfo *otherhostaddr; + struct addrinfo *i, *j; + int equiv = 0; + + if (getaddrinfo(hostnamebuf, NULL, NULL, &localhostaddr) != 0) + return 0; + if (getaddrinfo(host, NULL, NULL, &otherhostaddr) != 0) { + freeaddrinfo(localhostaddr); + return 0; + } + + for (i = localhostaddr; i != NULL && equiv == 0; i = i->ai_next) { + for (j = otherhostaddr; j != NULL && equiv == 0; j = j->ai_next) { + if (i->ai_family == j->ai_family) { + if (i->ai_family == AF_INET) { + struct sockaddr_in *sinA + = (struct sockaddr_in *) i->ai_addr; + struct sockaddr_in *sinB + = (struct sockaddr_in *) j->ai_addr; + struct in_addr *A = &sinA->sin_addr; + struct in_addr *B = &sinB->sin_addr; + + if (memcmp(A,B,sizeof(struct in_addr)) == 0) { + equiv = 1; + } + } else if (i->ai_family == AF_INET6) { + struct sockaddr_in6 *sinA + = (struct sockaddr_in6 *) i->ai_addr; + struct sockaddr_in6 *sinB + = (struct sockaddr_in6 *) j->ai_addr; + struct in6_addr *A = &sinA->sin6_addr; + struct in6_addr *B = &sinB->sin6_addr; + + if (memcmp(A,B,sizeof(struct in6_addr)) == 0) { + equiv = 1; + } + } + } + } + } + + freeaddrinfo(localhostaddr); + freeaddrinfo(otherhostaddr); + return equiv; +#else + /* + * A host may have more than one network address. If any of the + * network addresses of 'host' (specified to the connect call) + * match any of the network addresses of 'hostname' (determined + * by TRANS(GetHostname)), then the two hostnames are equivalent, + * and we know that 'host' is really a local host. + */ + char specified_local_addr_list[10][4]; + int scount, equiv, i, j; +#ifdef XTHREADS_NEEDS_BYNAMEPARAMS + _Xgethostbynameparams hparams; +#endif + struct hostent *hostp; + + if ((hostp = _XGethostbyname (host,hparams)) == NULL) + return (0); + + scount = 0; + while (hostp->h_addr_list[scount] && scount <= 8) + { + /* + * The 2nd call to gethostname() overrides the data + * from the 1st call, so we must save the address list. + */ + + specified_local_addr_list[scount][0] = + hostp->h_addr_list[scount][0]; + specified_local_addr_list[scount][1] = + hostp->h_addr_list[scount][1]; + specified_local_addr_list[scount][2] = + hostp->h_addr_list[scount][2]; + specified_local_addr_list[scount][3] = + hostp->h_addr_list[scount][3]; + scount++; + } + if ((hostp = _XGethostbyname (hostnamebuf,hparams)) == NULL) + return (0); + + equiv = 0; + i = 0; + + while (i < scount && !equiv) + { + j = 0; + + while (hostp->h_addr_list[j]) + { + if ((specified_local_addr_list[i][0] == + hostp->h_addr_list[j][0]) && + (specified_local_addr_list[i][1] == + hostp->h_addr_list[j][1]) && + (specified_local_addr_list[i][2] == + hostp->h_addr_list[j][2]) && + (specified_local_addr_list[i][3] == + hostp->h_addr_list[j][3])) + { + /* They're equal, so we're done */ + + equiv = 1; + break; + } + + j++; + } + + i++; + } + return (equiv); +#endif + } +} + +static int +TRANS(SocketUNIXConnect) (XtransConnInfo ciptr, + const char *host, const char *port) + +{ + struct sockaddr_un sockname; + SOCKLEN_T namelen; + + + int abstract = 0; +#ifdef HAVE_ABSTRACT_SOCKETS + abstract = ciptr->transptr->flags & TRANS_ABSTRACT; +#endif + + prmsg (2,"SocketUNIXConnect(%d,%s,%s)\n", ciptr->fd, host, port); + + /* + * Make sure 'host' is really local. If not, we return failure. + * The reason we make this check is because a process may advertise + * a "local" network ID for which it can accept connections, but if + * a process on a remote machine tries to connect to this network ID, + * we know for sure it will fail. + */ + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + if (host && *host && host[0]!='/' && strcmp(host, "unix") != 0 && strcasecmp(host, "nx") != 0 && + strncasecmp(host, "nx,", 3) != 0 && !UnixHostReallyLocal (host)) +#else + if (host && *host && host[0]!='/' && strcmp (host, "unix") != 0 && !UnixHostReallyLocal (host)) +#endif + { + prmsg (1, + "SocketUNIXConnect: Cannot connect to non-local host %s\n", + host); + return TRANS_CONNECT_FAILED; + } + + + /* + * Check the port. + */ + + if (!port || !*port) + { + prmsg (1,"SocketUNIXConnect: Missing port specification\n"); + return TRANS_CONNECT_FAILED; + } + + /* + * Build the socket name. + */ + + sockname.sun_family = AF_UNIX; + +#ifdef NX_TRANS_SOCKET + if (set_sun_path(port, _NXGetUnixPath(UNIX_PATH), sockname.sun_path, abstract) != 0) { +#else + if (set_sun_path(port, UNIX_PATH, sockname.sun_path, abstract) != 0) { +#endif + prmsg (1, "SocketUNIXConnect: path too long\n"); + return TRANS_CONNECT_FAILED; + } + +#if (defined(BSD44SOCKETS) || defined(__UNIXWARE__)) + sockname.sun_len = strlen (sockname.sun_path); +#endif + +#if defined(BSD44SOCKETS) || defined(SUN_LEN) + namelen = SUN_LEN (&sockname); +#else + namelen = strlen (sockname.sun_path) + offsetof(struct sockaddr_un, sun_path); +#endif + + + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + if (ciptr->priv != NULL) + { + if (TRANS(SocketConnectConnInfo) (ciptr, host, port) != 0) + { + return TRANS_CONNECT_FAILED; + } + + goto SocketUNIXConnectPost; + } + +#endif + + /* + * Adjust the socket path if using abstract sockets. + * Done here because otherwise all the strlen() calls above would fail. + */ + + if (abstract) { + sockname.sun_path[0] = '\0'; + } + + /* + * Do the connect() + */ + + if (connect (ciptr->fd, (struct sockaddr *) &sockname, namelen) < 0) + { + int olderrno = errno; + int connected = 0; + + if (!connected) + { + errno = olderrno; + + /* + * If the error was ENOENT, the server may be starting up; we used + * to suggest to try again in this case with + * TRANS_TRY_CONNECT_AGAIN, but this introduced problems for + * processes still referencing stale sockets in their environment. + * Hence, we now return a hard error, TRANS_CONNECT_FAILED, and it + * is suggested that higher level stacks handle retries on their + * level when they face a slow starting server. + * + * If the error was EWOULDBLOCK or EINPROGRESS then the socket + * was non-blocking and we should poll using select + * + * If the error was EINTR, the connect was interrupted and we + * should try again. + */ + + if (olderrno == EWOULDBLOCK || olderrno == EINPROGRESS) + return TRANS_IN_PROGRESS; + else if (olderrno == EINTR) + return TRANS_TRY_CONNECT_AGAIN; + else if (olderrno == ENOENT || olderrno == ECONNREFUSED) { + /* If opening as abstract socket failed, try again normally */ + if (abstract) { + ciptr->transptr->flags &= ~(TRANS_ABSTRACT); + return TRANS_TRY_CONNECT_AGAIN; + } else { + return TRANS_CONNECT_FAILED; + } + } else { + prmsg (2,"SocketUNIXConnect: Can't connect: errno = %d\n", + EGET()); + + return TRANS_CONNECT_FAILED; + } + } + } + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + +SocketUNIXConnectPost: + +#endif + + /* + * Get the socket name and the peer name from the connect socket, + * since this is unix domain. + */ + + if ((ciptr->addr = malloc(namelen)) == NULL || + (ciptr->peeraddr = malloc(namelen)) == NULL) + { + prmsg (1, + "SocketUNIXCreateListener: Can't allocate space for the addr\n"); + return TRANS_CONNECT_FAILED; + } + + if (abstract) + sockname.sun_path[0] = '@'; + + ciptr->family = AF_UNIX; + ciptr->addrlen = namelen; + ciptr->peeraddrlen = namelen; + memcpy (ciptr->addr, &sockname, ciptr->addrlen); + memcpy (ciptr->peeraddr, &sockname, ciptr->peeraddrlen); + + return 0; +} + +#endif /* UNIXCONN */ + +#endif /* TRANS_CLIENT */ + + +static int +TRANS(SocketBytesReadable) (XtransConnInfo ciptr, BytesReadable_t *pend) + +{ + prmsg (2,"SocketBytesReadable(%p,%d,%p)\n", + (void *) ciptr, ciptr->fd, (void *) pend); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + if (ciptr->priv) + { + if (NXTransRunning(ciptr->fd) == 0) + { + /* + * Force the application to shut down the + * socket if the NX transport is gone. We + * may probably save this additional call. + */ + +#ifdef NX_TRANS_DEBUG + fprintf(stderr, "SocketBytesReadable: NX transport not running for descriptor [%d].\n", + ciptr->fd); +#endif + ESET(EPIPE); + + return -1; + } + else + { + /* + * Emulate BytesReadable. Some X applications may use the system + * select() in their main loop, instead of the _XSelect() that is + * replaced by NX. Still these applications use _XEventsQueued to + * poll events from the X connection, and _XEventsQueued uses the + * NX _XSelect(), so it is generally possible to let the client + * yield the control to NX and let it handle the I/O on the proxy + * descriptors even if the application is not explicitly designed + * to work as a NX agent. + */ + +#ifdef NX_TRANS_DEBUG + + int result; + + result = NXTransReadable(ciptr->fd, (int *) pend); + + fprintf(stderr, "SocketBytesReadable: Descriptor [%d] result [%d] readable [%ld].\n", + ciptr->fd, result, *pend); + + return result; +#else + return NXTransReadable(ciptr->fd, (int *) pend); +#endif + } + } + +#endif /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ + +#ifdef WIN32 + { + int ret = ioctlsocket ((SOCKET) ciptr->fd, FIONREAD, (u_long *) pend); + if (ret == SOCKET_ERROR) errno = WSAGetLastError(); + return ret; + } +#else + return ioctl (ciptr->fd, FIONREAD, (char *) pend); +#endif /* WIN32 */ +} + +#if XTRANS_SEND_FDS + +static void +appendFd(struct _XtransConnFd **prev, int fd, int do_close) +{ + struct _XtransConnFd *cf, *new; + + new = malloc (sizeof (struct _XtransConnFd)); + if (!new) { + /* XXX mark connection as broken */ + close(fd); + return; + } + new->next = 0; + new->fd = fd; + new->do_close = do_close; + /* search to end of list */ + for (; (cf = *prev); prev = &(cf->next)); + *prev = new; +} + +static int +removeFd(struct _XtransConnFd **prev) +{ + struct _XtransConnFd *cf; + int fd; + + if ((cf = *prev)) { + *prev = cf->next; + fd = cf->fd; + free(cf); + } else + fd = -1; + return fd; +} + +static void +discardFd(struct _XtransConnFd **prev, struct _XtransConnFd *upto, int do_close) +{ + struct _XtransConnFd *cf, *next; + + for (cf = *prev; cf != upto; cf = next) { + next = cf->next; + if (do_close || cf->do_close) + close(cf->fd); + free(cf); + } + *prev = upto; +} + +static void +cleanupFds(XtransConnInfo ciptr) +{ + /* Clean up the send list but don't close the fds */ + discardFd(&ciptr->send_fds, NULL, 0); + /* Clean up the recv list and *do* close the fds */ + discardFd(&ciptr->recv_fds, NULL, 1); +} + +static int +nFd(struct _XtransConnFd **prev) +{ + struct _XtransConnFd *cf; + int n = 0; + + for (cf = *prev; cf; cf = cf->next) + n++; + return n; +} + +static int +TRANS(SocketRecvFd) (XtransConnInfo ciptr) +{ + prmsg (2, "SocketRecvFd(%d)\n", ciptr->fd); + return removeFd(&ciptr->recv_fds); +} + +static int +TRANS(SocketSendFd) (XtransConnInfo ciptr, int fd, int do_close) +{ + appendFd(&ciptr->send_fds, fd, do_close); + return 0; +} + +static int +TRANS(SocketRecvFdInvalid)(XtransConnInfo ciptr) +{ + errno = EINVAL; + return -1; +} + +static int +TRANS(SocketSendFdInvalid)(XtransConnInfo ciptr, int fd, int do_close) +{ + errno = EINVAL; + return -1; +} + +#define MAX_FDS 128 + +union fd_pass { + struct cmsghdr cmsghdr; + char buf[CMSG_SPACE(MAX_FDS * sizeof(int))]; +}; + +#endif /* XTRANS_SEND_FDS */ + +static int +TRANS(SocketRead) (XtransConnInfo ciptr, char *buf, int size) + +{ + prmsg (2,"SocketRead(%d,%p,%d)\n", ciptr->fd, (void *) buf, size); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + /* + * If we have a valid priv pointer then this + * is an internal connection to the proxy. + * In this case we should emulate the read. + */ + + if (ciptr->priv) + { + int result; + + result = NXTransRead(ciptr->fd, buf, size); + +#ifdef NX_TRANS_DEBUG + if (result < 0 && EGET() == EAGAIN) + { + fprintf(stderr, "SocketRead: Read from descriptor [%d] would block.\n", + ciptr->fd); + } + else + { + fprintf(stderr, "SocketRead: Read [%d] bytes from descriptor [%d].\n", + result, ciptr->fd); + } +#endif + return result; + } + else + { + /* FIXME: same code as below, should be possible without duplication */ +#if XTRANS_SEND_FDS + struct iovec iov = { + .iov_base = buf, + .iov_len = size + }; + union fd_pass cmsgbuf; + struct msghdr msg = { + .msg_name = NULL, + .msg_namelen = 0, + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = cmsgbuf.buf, + .msg_controllen = CMSG_LEN(MAX_FDS * sizeof(int)) + }; + + size = recvmsg(ciptr->fd, &msg, 0); + if (size >= 0) { + struct cmsghdr *hdr; + + for (hdr = CMSG_FIRSTHDR(&msg); hdr; hdr = CMSG_NXTHDR(&msg, hdr)) { + if (hdr->cmsg_level == SOL_SOCKET && hdr->cmsg_type == SCM_RIGHTS) { + int nfd = (hdr->cmsg_len - CMSG_LEN(0)) / sizeof (int); + int i; + int *fd = (int *) CMSG_DATA(hdr); + + for (i = 0; i < nfd; i++) + appendFd(&ciptr->recv_fds, fd[i], 0); + } + } + } + return size; +#else + return read (ciptr->fd, buf, size); +#endif /* XTRANS_SEND_FDS */ + } + +#else /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ + +#if defined(WIN32) + { + int ret = recv ((SOCKET)ciptr->fd, buf, size, 0); +#ifdef WIN32 + if (ret == SOCKET_ERROR) errno = WSAGetLastError(); +#endif + return ret; + } +#else +#if XTRANS_SEND_FDS + { + struct iovec iov = { + .iov_base = buf, + .iov_len = size + }; + union fd_pass cmsgbuf; + struct msghdr msg = { + .msg_name = NULL, + .msg_namelen = 0, + .msg_iov = &iov, + .msg_iovlen = 1, + .msg_control = cmsgbuf.buf, + .msg_controllen = CMSG_LEN(MAX_FDS * sizeof(int)) + }; + + size = recvmsg(ciptr->fd, &msg, 0); + if (size >= 0) { + struct cmsghdr *hdr; + + for (hdr = CMSG_FIRSTHDR(&msg); hdr; hdr = CMSG_NXTHDR(&msg, hdr)) { + if (hdr->cmsg_level == SOL_SOCKET && hdr->cmsg_type == SCM_RIGHTS) { + int nfd = (hdr->cmsg_len - CMSG_LEN(0)) / sizeof (int); + int i; + int *fd = (int *) CMSG_DATA(hdr); + + for (i = 0; i < nfd; i++) + appendFd(&ciptr->recv_fds, fd[i], 0); + } + } + } + return size; + } +#else + return read (ciptr->fd, buf, size); +#endif /* XTRANS_SEND_FDS */ +#endif /* WIN32 */ + +#endif /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ +} + +static int +TRANS(SocketReadv) (XtransConnInfo ciptr, struct iovec *buf, int size) + +{ + prmsg (2,"SocketReadv(%d,%p,%d)\n", ciptr->fd, (void *) buf, size); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + /* + * If we have a valid priv pointer then this + * is an internal connection to the proxy. + * In this case we should emulate the readv. + */ + + if (ciptr->priv) + { + return NXTransReadVector(ciptr->fd, buf, size); + } + else + { + /* FIXME: same code as below, should be possible without duplication */ +#if XTRANS_SEND_FDS + union fd_pass cmsgbuf; + struct msghdr msg = { + .msg_name = NULL, + .msg_namelen = 0, + .msg_iov = buf, + .msg_iovlen = size, + .msg_control = cmsgbuf.buf, + .msg_controllen = CMSG_LEN(MAX_FDS * sizeof(int)) + }; + + size = recvmsg(ciptr->fd, &msg, 0); + if (size >= 0) { + struct cmsghdr *hdr; + + for (hdr = CMSG_FIRSTHDR(&msg); hdr; hdr = CMSG_NXTHDR(&msg, hdr)) { + if (hdr->cmsg_level == SOL_SOCKET && hdr->cmsg_type == SCM_RIGHTS) { + int nfd = (hdr->cmsg_len - CMSG_LEN(0)) / sizeof (int); + int i; + int *fd = (int *) CMSG_DATA(hdr); + + for (i = 0; i < nfd; i++) + appendFd(&ciptr->recv_fds, fd[i], 0); + } + } + } + return size; +#else + return READV (ciptr, buf, size); +#endif + } + +#else /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ + +#if XTRANS_SEND_FDS + { + union fd_pass cmsgbuf; + struct msghdr msg = { + .msg_name = NULL, + .msg_namelen = 0, + .msg_iov = buf, + .msg_iovlen = size, + .msg_control = cmsgbuf.buf, + .msg_controllen = CMSG_LEN(MAX_FDS * sizeof(int)) + }; + + size = recvmsg(ciptr->fd, &msg, 0); + if (size >= 0) { + struct cmsghdr *hdr; + + for (hdr = CMSG_FIRSTHDR(&msg); hdr; hdr = CMSG_NXTHDR(&msg, hdr)) { + if (hdr->cmsg_level == SOL_SOCKET && hdr->cmsg_type == SCM_RIGHTS) { + int nfd = (hdr->cmsg_len - CMSG_LEN(0)) / sizeof (int); + int i; + int *fd = (int *) CMSG_DATA(hdr); + + for (i = 0; i < nfd; i++) + appendFd(&ciptr->recv_fds, fd[i], 0); + } + } + } + return size; + } +#else + return READV (ciptr, buf, size); +#endif + +#endif /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ +} + + +static int +TRANS(SocketWritev) (XtransConnInfo ciptr, struct iovec *buf, int size) + +{ + prmsg (2,"SocketWritev(%d,%p,%d)\n", ciptr->fd, (void *) buf, size); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + /* + * If we have a valid priv pointer then this + * is an internal connection to the proxy. + * In this case we should emulate the writev. + */ + + if (ciptr->priv) + { + return NXTransWriteVector(ciptr->fd, buf, size); + } + else + { + /* FIXME: same code as below, should be possible without duplication */ +#if XTRANS_SEND_FDS + if (ciptr->send_fds) + { + union fd_pass cmsgbuf; + int nfd = nFd(&ciptr->send_fds); + struct _XtransConnFd *cf = ciptr->send_fds; + struct msghdr msg = { + .msg_name = NULL, + .msg_namelen = 0, + .msg_iov = buf, + .msg_iovlen = size, + .msg_control = cmsgbuf.buf, + .msg_controllen = CMSG_LEN(nfd * sizeof(int)) + }; + struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg); + int i; + int *fds; + + hdr->cmsg_len = msg.msg_controllen; + hdr->cmsg_level = SOL_SOCKET; + hdr->cmsg_type = SCM_RIGHTS; + + fds = (int *) CMSG_DATA(hdr); + /* Set up fds */ + for (i = 0; i < nfd; i++) { + fds[i] = cf->fd; + cf = cf->next; + } + + i = sendmsg(ciptr->fd, &msg, 0); + if (i > 0) + discardFd(&ciptr->send_fds, cf, 0); + return i; + } +#endif + return WRITEV (ciptr, buf, size); + } + +#else /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ + +#if XTRANS_SEND_FDS + if (ciptr->send_fds) + { + union fd_pass cmsgbuf; + int nfd = nFd(&ciptr->send_fds); + struct _XtransConnFd *cf = ciptr->send_fds; + struct msghdr msg = { + .msg_name = NULL, + .msg_namelen = 0, + .msg_iov = buf, + .msg_iovlen = size, + .msg_control = cmsgbuf.buf, + .msg_controllen = CMSG_LEN(nfd * sizeof(int)) + }; + struct cmsghdr *hdr = CMSG_FIRSTHDR(&msg); + int i; + int *fds; + + hdr->cmsg_len = msg.msg_controllen; + hdr->cmsg_level = SOL_SOCKET; + hdr->cmsg_type = SCM_RIGHTS; + + fds = (int *) CMSG_DATA(hdr); + /* Set up fds */ + for (i = 0; i < nfd; i++) { + fds[i] = cf->fd; + cf = cf->next; + } + + i = sendmsg(ciptr->fd, &msg, 0); + if (i > 0) + discardFd(&ciptr->send_fds, cf, 0); + return i; + } +#endif + return WRITEV (ciptr, buf, size); + +#endif /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ +} + + +static int +TRANS(SocketWrite) (XtransConnInfo ciptr, char *buf, int size) + +{ + prmsg (2,"SocketWrite(%d,%p,%d)\n", ciptr->fd, (void *) buf, size); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + /* + * If we have a valid priv pointer then this + * is an internal connection to the proxy. + * In this case we should emulate the write. + */ + + if (ciptr->priv) + { + int result; + + result = NXTransWrite(ciptr->fd, buf, size); + +#ifdef NX_TRANS_DEBUG + if (result < 0 && EGET() == EAGAIN) + { + fprintf(stderr, "SocketWrite: Write on descriptor [%d] would block.\n", + ciptr->fd); + } + else + { + fprintf(stderr, "SocketWrite: Written [%d] bytes on descriptor [%d].\n", + result, ciptr->fd); + } +#endif + return result; + } + else + { + /* FIXME: same code as below, should be possible without duplication */ +#if XTRANS_SEND_FDS + if (ciptr->send_fds) + { + struct iovec iov; + + iov.iov_base = buf; + iov.iov_len = size; + return TRANS(SocketWritev)(ciptr, &iov, 1); + } +#endif /* XTRANS_SEND_FDS */ + return write (ciptr->fd, buf, size); + } + +#else /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ + +#if defined(WIN32) + { + int ret = send ((SOCKET)ciptr->fd, buf, size, 0); +#ifdef WIN32 + if (ret == SOCKET_ERROR) errno = WSAGetLastError(); +#endif + return ret; + } +#else +#if XTRANS_SEND_FDS + if (ciptr->send_fds) + { + struct iovec iov; + + iov.iov_base = buf; + iov.iov_len = size; + return TRANS(SocketWritev)(ciptr, &iov, 1); + } +#endif /* XTRANS_SEND_FDS */ + return write (ciptr->fd, buf, size); +#endif /* WIN32 */ + +#endif /* #if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) */ +} + +static int +TRANS(SocketDisconnect) (XtransConnInfo ciptr) + +{ + prmsg (2,"SocketDisconnect(%p,%d)\n", (void *) ciptr, ciptr->fd); + +#ifdef WIN32 + { + int ret = shutdown (ciptr->fd, 2); + if (ret == SOCKET_ERROR) errno = WSAGetLastError(); + return ret; + } +#else + return shutdown (ciptr->fd, 2); /* disallow further sends and receives */ +#endif +} + + +#ifdef TCPCONN +static int +TRANS(SocketINETClose) (XtransConnInfo ciptr) + +{ + prmsg (2,"SocketINETClose(%p,%d)\n", (void *) ciptr, ciptr->fd); + +#ifdef WIN32 + { + int ret = close (ciptr->fd); + if (ret == SOCKET_ERROR) errno = WSAGetLastError(); + return ret; + } +#else + return close (ciptr->fd); +#endif +} + +#endif /* TCPCONN */ + + +#ifdef UNIXCONN +static int +TRANS(SocketUNIXClose) (XtransConnInfo ciptr) +{ + /* + * If this is the server side, then once the socket is closed, + * it must be unlinked to completely close it + */ + + struct sockaddr_un *sockname = (struct sockaddr_un *) ciptr->addr; + int ret; + + prmsg (2,"SocketUNIXClose(%p,%d)\n", (void *) ciptr, ciptr->fd); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + if (ciptr->priv) + { + TRANS(SocketCloseConnInfo) (ciptr); + } + +#endif + +#if XTRANS_SEND_FDS + cleanupFds(ciptr); +#endif + ret = close(ciptr->fd); + +#if defined(NX_TRANS_SOCKET) && defined(NX_TRANS_TEST) + fprintf(stderr, "SocketUNIXClose: Flags are [%d] for ciptr at [%p] check is [%d].\n", + ciptr->flags, (void *) ciptr, (ciptr->flags && sockname + && sockname->sun_family == AF_UNIX && sockname->sun_path[0])); +#endif + + if (ciptr->flags + && sockname + && sockname->sun_family == AF_UNIX + && sockname->sun_path[0]) + { +#if defined(NX_TRANS_SOCKET) && defined(NX_TRANS_TEST) + if (!(ciptr->flags & TRANS_NOUNLINK + || ciptr->transptr->flags & TRANS_ABSTRACT)) + { + fprintf(stderr, "SocketUNIXClose: Unlinking path [%s] for ciptr at [%p].\n", + sockname->sun_path, (void *) ciptr); + unlink (sockname->sun_path); + } +#else + if (!(ciptr->flags & TRANS_NOUNLINK + || ciptr->transptr->flags & TRANS_ABSTRACT)) + unlink (sockname->sun_path); +#endif + } + + return ret; +} + +static int +TRANS(SocketUNIXCloseForCloning) (XtransConnInfo ciptr) + +{ + /* + * Don't unlink path. + */ + + int ret; + + prmsg (2,"SocketUNIXCloseForCloning(%p,%d)\n", + (void *) ciptr, ciptr->fd); + +#if defined(NX_TRANS_SOCKET) && defined(TRANS_CLIENT) + + if (ciptr->priv) + { + TRANS(SocketCloseConnInfo) (ciptr); + } + +#endif + +#if XTRANS_SEND_FDS + cleanupFds(ciptr); +#endif + ret = close(ciptr->fd); + + return ret; +} + +#endif /* UNIXCONN */ + + +#ifdef TCPCONN +# ifdef TRANS_SERVER +static const char* tcp_nolisten[] = { + "inet", +#if defined(IPv6) && defined(AF_INET6) + "inet6", +#endif + NULL +}; +# endif + +Xtransport TRANS(SocketTCPFuncs) = { + /* Socket Interface */ + "tcp", + TRANS_ALIAS, +#ifdef TRANS_CLIENT + TRANS(SocketOpenCOTSClient), +#endif /* TRANS_CLIENT */ +#ifdef TRANS_SERVER + tcp_nolisten, + TRANS(SocketOpenCOTSServer), +#endif /* TRANS_SERVER */ +#ifdef TRANS_REOPEN + TRANS(SocketReopenCOTSServer), +#endif + TRANS(SocketSetOption), +#ifdef TRANS_SERVER + TRANS(SocketINETCreateListener), + NULL, /* ResetListener */ + TRANS(SocketINETAccept), +#endif /* TRANS_SERVER */ +#ifdef TRANS_CLIENT + TRANS(SocketINETConnect), +#endif /* TRANS_CLIENT */ + TRANS(SocketBytesReadable), + TRANS(SocketRead), + TRANS(SocketWrite), + TRANS(SocketReadv), + TRANS(SocketWritev), +#if XTRANS_SEND_FDS + TRANS(SocketSendFdInvalid), + TRANS(SocketRecvFdInvalid), +#endif + TRANS(SocketDisconnect), + TRANS(SocketINETClose), + TRANS(SocketINETClose), + }; + +Xtransport TRANS(SocketINETFuncs) = { + /* Socket Interface */ + "inet", + 0, +#ifdef TRANS_CLIENT + TRANS(SocketOpenCOTSClient), +#endif /* TRANS_CLIENT */ +#ifdef TRANS_SERVER + NULL, + TRANS(SocketOpenCOTSServer), +#endif /* TRANS_SERVER */ +#ifdef TRANS_REOPEN + TRANS(SocketReopenCOTSServer), +#endif + TRANS(SocketSetOption), +#ifdef TRANS_SERVER + TRANS(SocketINETCreateListener), + NULL, /* ResetListener */ + TRANS(SocketINETAccept), +#endif /* TRANS_SERVER */ +#ifdef TRANS_CLIENT + TRANS(SocketINETConnect), +#endif /* TRANS_CLIENT */ + TRANS(SocketBytesReadable), + TRANS(SocketRead), + TRANS(SocketWrite), + TRANS(SocketReadv), + TRANS(SocketWritev), +#if XTRANS_SEND_FDS + TRANS(SocketSendFdInvalid), + TRANS(SocketRecvFdInvalid), +#endif + TRANS(SocketDisconnect), + TRANS(SocketINETClose), + TRANS(SocketINETClose), + }; + +#if defined(IPv6) && defined(AF_INET6) +Xtransport TRANS(SocketINET6Funcs) = { + /* Socket Interface */ + "inet6", + 0, +#ifdef TRANS_CLIENT + TRANS(SocketOpenCOTSClient), +#endif /* TRANS_CLIENT */ +#ifdef TRANS_SERVER + NULL, + TRANS(SocketOpenCOTSServer), +#endif /* TRANS_SERVER */ +#ifdef TRANS_REOPEN + TRANS(SocketReopenCOTSServer), +#endif + TRANS(SocketSetOption), +#ifdef TRANS_SERVER + TRANS(SocketINETCreateListener), + NULL, /* ResetListener */ + TRANS(SocketINETAccept), +#endif /* TRANS_SERVER */ +#ifdef TRANS_CLIENT + TRANS(SocketINETConnect), +#endif /* TRANS_CLIENT */ + TRANS(SocketBytesReadable), + TRANS(SocketRead), + TRANS(SocketWrite), + TRANS(SocketReadv), + TRANS(SocketWritev), +#if XTRANS_SEND_FDS + TRANS(SocketSendFdInvalid), + TRANS(SocketRecvFdInvalid), +#endif + TRANS(SocketDisconnect), + TRANS(SocketINETClose), + TRANS(SocketINETClose), + }; +#endif /* IPv6 */ +#endif /* TCPCONN */ + +#ifdef UNIXCONN +#if !defined(LOCALCONN) +Xtransport TRANS(SocketLocalFuncs) = { + /* Socket Interface */ + "local", +#ifdef HAVE_ABSTRACT_SOCKETS + TRANS_ABSTRACT, +#else + 0, +#endif +#ifdef TRANS_CLIENT + TRANS(SocketOpenCOTSClient), +#endif /* TRANS_CLIENT */ +#ifdef TRANS_SERVER + NULL, + TRANS(SocketOpenCOTSServer), +#endif /* TRANS_SERVER */ +#ifdef TRANS_REOPEN + TRANS(SocketReopenCOTSServer), +#endif + TRANS(SocketSetOption), +#ifdef TRANS_SERVER + TRANS(SocketUNIXCreateListener), + TRANS(SocketUNIXResetListener), + TRANS(SocketUNIXAccept), +#endif /* TRANS_SERVER */ +#ifdef TRANS_CLIENT + TRANS(SocketUNIXConnect), +#endif /* TRANS_CLIENT */ + TRANS(SocketBytesReadable), + TRANS(SocketRead), + TRANS(SocketWrite), + TRANS(SocketReadv), + TRANS(SocketWritev), +#if XTRANS_SEND_FDS + TRANS(SocketSendFd), + TRANS(SocketRecvFd), +#endif + TRANS(SocketDisconnect), + TRANS(SocketUNIXClose), + TRANS(SocketUNIXCloseForCloning), + }; +#endif /* !LOCALCONN */ +# ifdef TRANS_SERVER +# if !defined(LOCALCONN) +static const char* unix_nolisten[] = { "local" , NULL }; +# endif +# endif + +Xtransport TRANS(SocketUNIXFuncs) = { + /* Socket Interface */ + "unix", +#if !defined(LOCALCONN) && !defined(HAVE_ABSTRACT_SOCKETS) + TRANS_ALIAS, +#else + 0, +#endif +#ifdef TRANS_CLIENT + TRANS(SocketOpenCOTSClient), +#endif /* TRANS_CLIENT */ +#ifdef TRANS_SERVER +#if !defined(LOCALCONN) + unix_nolisten, +#else + NULL, +#endif + TRANS(SocketOpenCOTSServer), +#endif /* TRANS_SERVER */ +#ifdef TRANS_REOPEN + TRANS(SocketReopenCOTSServer), +#endif + TRANS(SocketSetOption), +#ifdef TRANS_SERVER + TRANS(SocketUNIXCreateListener), + TRANS(SocketUNIXResetListener), + TRANS(SocketUNIXAccept), +#endif /* TRANS_SERVER */ +#ifdef TRANS_CLIENT + TRANS(SocketUNIXConnect), +#endif /* TRANS_CLIENT */ + TRANS(SocketBytesReadable), + TRANS(SocketRead), + TRANS(SocketWrite), + TRANS(SocketReadv), + TRANS(SocketWritev), +#if XTRANS_SEND_FDS + TRANS(SocketSendFd), + TRANS(SocketRecvFd), +#endif + TRANS(SocketDisconnect), + TRANS(SocketUNIXClose), + TRANS(SocketUNIXCloseForCloning), + }; + +#endif /* UNIXCONN */ + +#ifdef NX_TRANS_SOCKET +/* + * Override the UNIX_DIR and UNIX_PATH settings and + * make them configurable, based on the NX_TEMP or + * the TEMP environment. + * + * We must be careful as the same defines are used + * for different directories, based on the subsystem + * that is compiling this, while we want to override + * only the '/tmp/.X11-unix' and '/tmp/.X11-unix/X' + * settings. + */ + +static char _NXUnixDir[1024]; +static char _NXUnixPath[1024]; + +static char *_NXGetUnixDir(char *dir) +{ + const char *tempDir; + + prmsg (3, "_NXGetUnixDir(%s)\n", dir); + + if (strcmp(dir, UNIX_DIR) != 0) + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixDir: Returning other Unix directory [%s].\n", dir); +#endif + return dir; + } + + /* + * Check the environment only once. + */ + + if (*_NXUnixDir != '\0') + { + return _NXUnixDir; + } + +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixDir: Trying with the NX_TEMP environment.\n"); +#endif + + tempDir = getenv("NX_TEMP"); + + if (tempDir == NULL || *tempDir == '\0') + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixDir: Trying with the TEMP environment.\n"); +#endif + + tempDir = getenv("TEMP"); + } + + if (tempDir != NULL && *tempDir != '\0') + { + if (strlen(tempDir) + strlen("/.X11-unix") + 1 > 1024) + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixDir: WARNING! Maximum length of X11 Unix directory exceeded.\n"); +#endif + goto _NXGetUnixDirError; + } + + strcpy(_NXUnixDir, tempDir); + strcat(_NXUnixDir, "/.X11-unix"); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixDir: Using X11 Unix directory [%s].\n", _NXUnixDir); +#endif + + return _NXUnixDir; + } + +_NXGetUnixDirError: + + strcpy(_NXUnixDir, dir); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixDir: Returning default X11 Unix directory [%s].\n", _NXUnixDir); +#endif + + return _NXUnixDir; +} + +static char *_NXGetUnixPath(char *path) +{ + const char *unixDir; + + prmsg (3, "_NXGetUnixPath(%s)\n", path); + + if (strcmp(path, UNIX_PATH) != 0) + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixPath: Returning other X11 Unix path [%s].\n", path); +#endif + return path; + } + + /* + * Check the environment only once. + */ + + if (*_NXUnixPath != '\0') + { + return _NXUnixPath; + } + + unixDir = _NXGetUnixDir(UNIX_DIR); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixPath: Got X11 Unix directory [%s].\n", unixDir); +#endif + + if (strlen(unixDir) + strlen("/X") + 1 > 1024) + { +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixPath: WARNING! Maximum length of X11 Unix path exceeded.\n"); +#endif + + goto _NXGetUnixPathError; + } + + strcpy(_NXUnixPath, unixDir); + strcat(_NXUnixPath, "/X"); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixPath: Returning X11 Unix path [%s].\n", _NXUnixPath); +#endif + + return _NXUnixPath; + +_NXGetUnixPathError: + + strcpy(_NXUnixPath, path); + +#ifdef NX_TRANS_TEST + fprintf(stderr, "_NXGetUnixPath: Returning default X11 Unix path [%s].\n", _NXUnixPath); +#endif + + return _NXUnixPath; +} + +#endif /* NX_TRANS_SOCKET */ |