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new address options shut-none, shut-down, and shut-close

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This commit is contained in:
Gerhard Rieger 2009-04-02 08:52:11 +02:00
parent 50be6b25cf
commit 793763677a
8 changed files with 58 additions and 7 deletions
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4
CHANGES
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@ -1,4 +1,8 @@
new features:
new address options shut-none, shut-down, and shut-close allow to
control socat's half close behaviour
####################### V 1.7.0.1:
corrections:

9
doc/socat.yo
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@ -1481,6 +1481,15 @@ label(OPTION_END_CLOSE)dit(bf(tt(end-close)))
Similarly, when an address of type EXEC or SYSTEM is ended, socat usually
will explicitely kill the sub process. With this option, it will just close
the file descriptors.
label(OPTION_SHUT_NONE)dit(bf(tt(shut-none)))
Changes the (address dependent) method of shutting down the write part of a
connection to not do anything.
label(OPTION_SHUT_DOWN)dit(bf(tt(shut-down)))
Changes the (address dependent) method of shutting down the write part of a
connection to tt(shutdown\(fd, SHUT_WR)). Is only useful with sockets.
label(OPTION_SHUT_CLOSE)dit(bf(tt(shut-close)))
Changes the (address dependent) method of shutting down the write part of a
connection to tt(close\(fd)).
label(OPTION_IOCTL_VOID)dit(bf(tt(ioctl-void=<request>)))
Calls tt(ioctl()) with the request value as second argument and NULL as
third argument. This option allows to utilize ioctls that are not

5
xio-fd.c
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@ -1,5 +1,5 @@
/* source: xio-fd.c */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this file contains common file descriptor related option definitions */
@ -75,6 +75,9 @@ const struct optdesc opt_cool_write = { "cool-write", "coolwrite", OPT_COOL_WRIT
/* control closing of connections */
const struct optdesc opt_end_close = { "end-close", "close", OPT_END_CLOSE, GROUP_FD, PH_INIT, TYPE_CONST, OFUNC_OFFSET, (bool)&((xiofile_t *)0)->stream.howtoend, END_CLOSE };
const struct optdesc opt_shut_none = { "shut-none", NULL, OPT_SHUT_NONE, GROUP_FD, PH_INIT, TYPE_BOOL, OFUNC_OFFSET, (bool)&((xiofile_t *)0)->stream.howtoshut, XIOSHUT_NONE };
const struct optdesc opt_shut_down = { "shut-down", NULL, OPT_SHUT_DOWN, GROUP_FD, PH_INIT, TYPE_BOOL, OFUNC_OFFSET, (bool)&((xiofile_t *)0)->stream.howtoshut, XIOSHUT_DOWN };
const struct optdesc opt_shut_close= { "shut-close", NULL, OPT_SHUT_CLOSE, GROUP_FD, PH_INIT, TYPE_BOOL, OFUNC_OFFSET, (bool)&((xiofile_t *)0)->stream.howtoshut, XIOSHUT_CLOSE };
/****** generic ioctl() options ******/
const struct optdesc opt_ioctl_void = { "ioctl-void", "ioctl", OPT_IOCTL_VOID, GROUP_FD, PH_FD, TYPE_INT, OFUNC_IOCTL_GENERIC, 0, 0, 0 };

5
xio-fd.h
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@ -1,5 +1,5 @@
/* source: xio-fd.h */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
#ifndef __xio_fd_h_included
@ -42,6 +42,9 @@ extern const struct optdesc opt_f_setlk_wr;
extern const struct optdesc opt_f_setlkw_wr;
extern const struct optdesc opt_cool_write;
extern const struct optdesc opt_end_close;
extern const struct optdesc opt_shut_none;
extern const struct optdesc opt_shut_down;
extern const struct optdesc opt_shut_close;
extern const struct optdesc opt_streams_i_push;
#endif /* !defined(__xio_fd_h_included) */

8
xio.h
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@ -1,5 +1,5 @@
/* source: xio.h */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
#ifndef __xio_h_included
@ -146,6 +146,12 @@ typedef struct single {
bool opt_unlink_close; /* option unlink_close */
char *unlink_close; /* name of a symlink or unix socket to be removed */
int dtype;
enum {
XIOSHUT_UNSPEC, /* fall back to old (up to 1.7.0.0) behaviour */
XIOSHUT_NONE, /* do nothing on shutdown */
XIOSHUT_CLOSE, /* close the FD */
XIOSHUT_DOWN /* shutdown() */
} howtoshut;
enum {
END_UNSPEC, /* after init, when no end-close... option */
END_NONE, /* no action */

5
xioopts.c
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@ -1,5 +1,5 @@
/* source: xioopts.c */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this file contains the source for address options handling */
@ -1313,6 +1313,9 @@ const struct optname optionnames[] = {
IF_SOCKET ("setsockopt-string", &opt_setsockopt_string)
IF_ANY ("setuid", &opt_setuid)
IF_ANY ("setuid-early", &opt_setuid_early)
IF_ANY ("shut-close", &opt_shut_close)
IF_ANY ("shut-down", &opt_shut_down)
IF_ANY ("shut-none", &opt_shut_none)
#if WITH_EXEC || WITH_SYSTEM
IF_ANY ("sid", &opt_setsid)
#endif

5
xioopts.h
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@ -1,5 +1,5 @@
/* source: xioopts.h */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
#ifndef __xioopts_h_included
@ -590,6 +590,9 @@ enum e_optcode {
OPT_SETSOCKOPT_STRING,
OPT_SETUID,
OPT_SETUID_EARLY,
OPT_SHUT_CLOSE,
OPT_SHUT_DOWN,
OPT_SHUT_NONE,
OPT_SIGHUP,
OPT_SIGINT,
OPT_SIGQUIT,

24
xioshutdown.c
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@ -1,5 +1,5 @@
/* source: xioshutdown.c */
/* Copyright Gerhard Rieger 2001-2008 */
/* Copyright Gerhard Rieger 2001-2009 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this is the source of the extended shutdown function */
@ -31,9 +31,29 @@ int xioshutdown(xiofile_t *sock, int how) {
if ((how+1)&2) {
result |= xioshutdown((xiofile_t *)sock->dual.stream[1], 1);
}
return result;
}
switch (sock->stream.howtoshut) {
case XIOSHUT_NONE:
return 0;
case XIOSHUT_CLOSE:
if (Close(sock->stream.fd) < 0) {
Info2("close(%d): %s",
sock->stream.fd, strerror(errno));
}
return 0;
case XIOSHUT_DOWN:
if ((result = Shutdown(sock->stream.fd, how)) < 0) {
Info3("shutdown(%d, %d): %s",
sock->stream.fd, how, strerror(errno));
}
return 0;
default: ;
}
#if WITH_OPENSSL
} else if ((sock->stream.dtype & XIODATA_MASK) == XIODATA_OPENSSL) {
if ((sock->stream.dtype & XIODATA_MASK) == XIODATA_OPENSSL) {
sycSSL_shutdown (sock->stream.para.openssl.ssl);
/*! what about half/full close? */
#endif /* WITH_OPENSSL */