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/* $Id: xio-stdio.c,v 1.11 2004/06/06 17:33:22 gerhard Exp $ */
/* Copyright Gerhard Rieger 2001-2003 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this file contains the source for opening addresses stdio type */
#include "xiosysincludes.h"
#include "xioopen.h"
#include "xio-fdnum.h"
#include "xio-stdio.h"
#if WITH_STDIO
static int xioopen_stdio(char *arg, int rw, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, void *dummyp1);
const struct addrdesc addr_stdio = { "stdio", 3, xioopen_stdio, GROUP_FD, 0, 0, NULL HELP(NULL) };
const struct addrdesc addr_stdin = { "stdin", 1, xioopen_fd, GROUP_FD, 0, 0, NULL HELP(NULL) };
const struct addrdesc addr_stdout = { "stdout", 2, xioopen_fd, GROUP_FD, 1, 0, NULL HELP(NULL) };
const struct addrdesc addr_stderr = { "stderr", 2, xioopen_fd, GROUP_FD, 2, 0, NULL HELP(NULL) };
/* process a bidirectional "stdio" or "-" argument with options.
generate a dual address. */
int xioopen_stdio_bi(char *arg, xiofile_t *sock) {
struct opt *opts = NULL, *opts1, *opts2, *optspr;
/*0 char *b;*/
unsigned int groups1, groups2;
int result;
if (xioopen_makedual(sock) < 0) {
return -1;
}
sock->dual.stream[0]->common.tag = XIO_TAG_RDONLY;
sock->dual.stream[0]->stream.fd = 0 /*stdin*/;
sock->dual.stream[1]->common.tag = XIO_TAG_WRONLY;
sock->dual.stream[1]->stream.fd = 1 /*stdout*/;
sock->dual.stream[0]->stream.howtoend =
sock->dual.stream[1]->stream.howtoend = END_NONE;
#if 0
if ((b = strdup(arg)) == NULL) {
Error1("strdup("F_Zu"): out of memory", strlen(arg)+1);
return -1;
}
#endif
#if WITH_TERMIOS
if (Isatty(sock->dual.stream[0]->stream.fd)) {
if (Tcgetattr(sock->dual.stream[0]->stream.fd,
&sock->dual.stream[0]->stream.savetty)
< 0) {
Warn2("cannot query current terminal settings on fd %d: %s",
sock->dual.stream[0]->stream.fd, strerror(errno));
} else {
sock->dual.stream[0]->stream.ttyvalid = true;
}
}
if (Isatty(sock->dual.stream[1]->stream.fd)) {
if (Tcgetattr(sock->dual.stream[1]->stream.fd,
&sock->dual.stream[1]->stream.savetty)
< 0) {
Warn2("cannot query current terminal settings on fd %d: %s",
sock->dual.stream[1]->stream.fd, strerror(errno));
} else {
sock->dual.stream[1]->stream.ttyvalid = true;
}
}
#endif /* WITH_TERMIOS */
groups1 = groupbits(0);
groups2 = groupbits(1);
if (parseopts(arg, GROUP_FD|groups1|groups2, &opts) < 0)
return STAT_NORETRY;
applyopts(-1, opts, PH_INIT);
/* options here are one-time and one-direction, no second use */
retropt_bool(opts, OPT_IGNOREEOF, &sock->dual.stream[0]->stream.ignoreeof);
/* extract opts that should be applied only once */
if ((optspr = copyopts(opts, GROUP_PROCESS)) == NULL) {
return -1;
}
if ((result = applyopts(-1, optspr, PH_PREOPEN)) < 0)
return result;
/* here we copy opts, because most have to be applied twice! */
if ((opts1 = copyopts(opts, GROUP_FD|GROUP_APPL|(groups1&~GROUP_PROCESS))) == NULL) {
return -1;
}
/* apply options to first FD */
if ((result = applyopts(sock->dual.stream[0]->stream.fd, opts1, PH_ALL)) < 0) {
return result;
}
if ((result = _xio_openlate(&sock->dual.stream[0]->stream, opts1)) < 0) {
return result;
}
if ((opts2 = copyopts(opts, GROUP_FD|GROUP_APPL|(groups2&~GROUP_PROCESS))) == NULL) {
return -1;
}
/* apply options to second FD */
if ((result = applyopts(sock->dual.stream[1]->stream.fd, opts2, PH_ALL)) < 0) {
return result;
}
if ((result = _xio_openlate(&sock->dual.stream[1]->stream, opts2)) < 0) {
return result;
}
if ((result = _xio_openlate(&sock->dual.stream[1]->stream, optspr)) < 0) {
return result;
}
Notice("reading from and writing to stdio");
return 0;
}
/* wrap around unidirectional xioopensingle and xioopen_fd to automatically determine stdin or stdout fd depending on rw.
Do not set FD_CLOEXEC flag. */
static int xioopen_stdio(char *arg, int rw, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, void *dummyp1) {
Notice2("using %s for %s",
&("stdin\0\0\0stdout\0\0stderr"[rw<<3]),
ddirection[rw]);
return xioopen_fd(arg, rw, fd, groups, rw, dummy2, dummyp1);
}
#endif /* WITH_STDIO */
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