mirror of
https://github.com/moparisthebest/socat
synced 2024-12-21 22:48:48 -05:00
219 lines
6.9 KiB
C
219 lines
6.9 KiB
C
/* source: xio-gopen.c */
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/* Copyright Gerhard Rieger 2001-2007 */
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/* Published under the GNU General Public License V.2, see file COPYING */
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/* this file contains the source for opening addresses of generic open type */
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#include "xiosysincludes.h"
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#include "xioopen.h"
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#include "xio-named.h"
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#include "xio-unix.h"
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#include "xio-gopen.h"
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#if WITH_GOPEN
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static int xioopen_gopen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3);
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const struct addrdesc addr_gopen = { "gopen", 3, xioopen_gopen, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_REG|GROUP_NAMED|GROUP_OPEN|GROUP_FILE|GROUP_TERMIOS|GROUP_SOCKET|GROUP_SOCK_UNIX, 0, 0, 0 HELP(":<filename>") };
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static int xioopen_gopen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3) {
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const char *filename = argv[1];
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flags_t openflags = (xioflags & XIO_ACCMODE);
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mode_t st_mode;
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bool exists;
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bool opt_unlink_close = false;
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int result;
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if ((result =
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_xioopen_named_early(argc, argv, fd, GROUP_NAMED|groups, &exists, opts)) < 0) {
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return result;
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}
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st_mode = result;
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if (exists) {
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/* file (or at least named entry) exists */
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if ((xioflags&XIO_ACCMODE) != XIO_RDONLY) {
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openflags |= O_APPEND;
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}
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} else {
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openflags |= O_CREAT;
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}
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/* note: when S_ISSOCK was undefined, it always gives 0 */
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if (exists && S_ISSOCK(st_mode)) {
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#if WITH_UNIX
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int socktype = SOCK_STREAM;
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int optsotype = -1;
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struct sockaddr_un sa, us;
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socklen_t salen, uslen = sizeof(us);
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bool needbind = false;
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char infobuff[256];
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struct opt *opts2;
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socket_un_init(&sa);
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socket_un_init(&us);
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Info1("\"%s\" is a socket, connecting to it", filename);
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if (retropt_int(opts, OPT_SO_TYPE, &optsotype) == 0) {
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socktype = optsotype;
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}
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if (retropt_bind(opts, AF_UNIX, socktype, 0, (struct sockaddr *)&us, &uslen, 0, 0, 0) != STAT_NOACTION) {
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needbind = true;
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}
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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if (opt_unlink_close) {
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if ((fd->stream.unlink_close = strdup(filename)) == NULL) {
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Error1("strdup(\"%s\"): out of memory", filename);
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}
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fd->stream.opt_unlink_close = true;
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}
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/* save options, because we might have to start again with Socket() */
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opts2 = copyopts(opts, GROUP_ALL);
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if ((fd->stream.fd = Socket(PF_UNIX, socktype, 0)) < 0) {
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Error2("socket(PF_UNIX, %d, 0): %s", socktype, strerror(errno));
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return STAT_RETRYLATER;
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}
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/*0 Info2("socket(PF_UNIX, %d, 0) -> %d", socktype, fd->stream.fd);*/
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applyopts(fd->stream.fd, opts, PH_PASTSOCKET);
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applyopts(fd->stream.fd, opts, PH_FD);
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applyopts_cloexec(fd->stream.fd, opts);
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sa.sun_family = AF_UNIX;
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salen = xiosetunix(&sa, filename, false, false);
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#if 0
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applyopts(fd->stream.fd, opts, PH_PREBIND);
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applyopts(fd->stream.fd, opts, PH_BIND);
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if (us) {
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if (Bind(fd->stream.fd, us, uslen) < 0) {
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Error4("bind(%d, {%s}, "F_Zd"): %s",
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fd->fd, sockaddr_info(us, infobuff, sizeof(infobuff)),
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uslen, strerror(errno));
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if (fd->forever || --fd->retry) {
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Nanosleep(&fd->intervall, NULL);
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continue;
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} else
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return STAT_RETRYLATER;
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}
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}
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applyopts(fd->stream.fd, opts, PH_PASTBIND);
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#endif /* 0 */
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applyopts(fd->stream.fd, opts, PH_CONNECT);
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if ((result = Connect(fd->stream.fd, (struct sockaddr *)&sa, salen)) < 0) {
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if (errno == EINPROGRESS) {
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Warn4("connect(%d, %s, "F_Zd"): %s",
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fd->stream.fd, sockaddr_unix_info(&sa, salen, infobuff, sizeof(infobuff)),
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sizeof(sa), strerror(errno));
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} else if (errno == EPROTOTYPE && optsotype != SOCK_STREAM) {
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Warn4("connect(%d, %s, "F_Zd"): %s",
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fd->stream.fd, sockaddr_unix_info(&sa, salen, infobuff, sizeof(infobuff)),
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sizeof(sa), strerror(errno));
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Info("assuming datagram socket");
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Close(fd->stream.fd);
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opts = opts2;
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if ((fd->stream.fd = Socket(PF_UNIX, SOCK_DGRAM, 0)) < 0) {
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Error1("socket(PF_UNIX, SOCK_DGRAM, 0): %s", strerror(errno));
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return STAT_RETRYLATER;
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}
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/*0 Info1("socket(PF_UNIX, SOCK_DGRAM, 0) -> %d", fd->stream.fd);*/
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applyopts(fd->stream.fd, opts, PH_PASTSOCKET);
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applyopts(fd->stream.fd, opts, PH_FD);
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applyopts_cloexec(fd->stream.fd, opts);
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sa.sun_family = AF_UNIX;
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strncpy(sa.sun_path, filename, sizeof(sa.sun_path));
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fd->stream.dtype = XIODATA_RECVFROM;
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fd->stream.salen = sizeof(sa);
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memcpy(&fd->stream.peersa.soa, &sa, fd->stream.salen);
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} else {
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Error4("connect(%d, %s, "F_Zd"): %s",
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fd->stream.fd, sockaddr_unix_info(&sa, fd->stream.salen, infobuff, sizeof(infobuff)),
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sizeof(sa), strerror(errno));
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return STAT_RETRYLATER;
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}
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}
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if (fd->stream.howtoend == END_UNSPEC) {
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fd->stream.howtoend = END_SHUTDOWN;
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}
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applyopts_fchown(fd->stream.fd, opts);
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applyopts(fd->stream.fd, opts, PH_CONNECTED);
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applyopts(fd->stream.fd, opts, PH_LATE);
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applyopts_named(filename, opts, PH_PASTOPEN); /* unlink-late */
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if (Getsockname(fd->stream.fd, (struct sockaddr *)&us, &uslen) < 0) {
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Warn4("getsockname(%d, %p, {%d}): %s",
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fd->stream.fd, &us, uslen, strerror(errno));
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} else {
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Notice1("successfully connected via %s",
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sockaddr_unix_info(&us, uslen, infobuff, sizeof(infobuff)));
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}
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#else
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Error("\"%s\" is a socket, but UNIX socket support is not compiled in");
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return -1;
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#endif /* WITH_UNIX */
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} else {
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/* a file name */
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Info1("\"%s\" is not a socket, open()'ing it", filename);
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retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
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if (opt_unlink_close) {
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if ((fd->stream.unlink_close = strdup(filename)) == NULL) {
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Error1("strdup(\"%s\"): out of memory", filename);
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}
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fd->stream.opt_unlink_close = true;
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}
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Notice3("opening %s \"%s\" for %s",
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filetypenames[(st_mode&S_IFMT)>>12], filename, ddirection[(xioflags&XIO_ACCMODE)]);
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if ((result = _xioopen_open(filename, openflags, opts)) < 0)
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return result;
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#ifdef I_PUSH
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if (S_ISCHR(st_mode)) {
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Ioctl(result, I_PUSH, "ptem");
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Ioctl(result, I_PUSH, "ldterm");
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Ioctl(result, I_PUSH, "ttcompat");
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}
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#endif
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fd->stream.fd = result;
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#if WITH_TERMIOS
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if (Isatty(fd->stream.fd)) {
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if (Tcgetattr(fd->stream.fd, &fd->stream.savetty) < 0) {
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Warn2("cannot query current terminal settings on fd %d: %s",
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fd->stream.fd, strerror(errno));
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} else {
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fd->stream.ttyvalid = true;
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}
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}
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#endif /* WITH_TERMIOS */
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applyopts_named(filename, opts, PH_FD);
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applyopts(fd->stream.fd, opts, PH_FD);
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applyopts_cloexec(fd->stream.fd, opts);
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}
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if ((result = applyopts2(fd->stream.fd, opts, PH_PASTSOCKET, PH_CONNECTED)) < 0)
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return result;
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if ((result = _xio_openlate(&fd->stream, opts)) < 0)
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return result;
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return 0;
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}
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#endif /* WITH_GOPEN */
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