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/* source: xio-stdio.c */
/* Copyright Gerhard Rieger and contributors (see file CHANGES) */
/* 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(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, const struct addrdesc *addrdesc);
static int xioopen_stdfd(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, const struct addrdesc *addrdesc);
/* We specify all option groups that we can imagine for a FD, because the
changed parsing mechanism does not allow us to check the type of FD before
applying the options */
const struct addrdesc xioaddr_stdio = { "STDIO", 3, xioopen_stdio, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(NULL) };
const struct addrdesc xioaddr_stdin = { "STDIN", 1, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 0, 0, 0 HELP(NULL) };
const struct addrdesc xioaddr_stdout = { "STDOUT", 2, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 1, 0, 0 HELP(NULL) };
const struct addrdesc xioaddr_stderr = { "STDERR", 2, xioopen_stdfd, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, 2, 0, 0 HELP(NULL) };
/* process a bidirectional "stdio" or "-" argument with options.
generate a dual address. */
int xioopen_stdio_bi(xiofile_t *sock) {
struct opt *optspr;
groups_t groups1 = xioaddr_stdio.groups;
int result;
if (xioopen_makedual(sock) < 0) {
return -1;
}
sock->dual.stream[0]->tag = XIO_TAG_RDONLY;
sock->dual.stream[0]->fd = 0 /*stdin*/;
sock->dual.stream[1]->tag = XIO_TAG_WRONLY;
sock->dual.stream[1]->fd = 1 /*stdout*/;
if (sock->dual.stream[0]->howtoend == END_UNSPEC)
sock->dual.stream[0]->howtoend = END_NONE;
if (sock->dual.stream[1]->howtoend == END_UNSPEC)
sock->dual.stream[1]->howtoend = END_NONE;
#if WITH_TERMIOS
if (Isatty(sock->dual.stream[0]->fd)) {
if (Tcgetattr(sock->dual.stream[0]->fd,
&sock->dual.stream[0]->savetty)
< 0) {
Warn2("cannot query current terminal settings on fd %d: %s",
sock->dual.stream[0]->fd, strerror(errno));
} else {
sock->dual.stream[0]->ttyvalid = true;
}
}
if (Isatty(sock->dual.stream[1]->fd)) {
if (Tcgetattr(sock->dual.stream[1]->fd,
&sock->dual.stream[1]->savetty)
< 0) {
Warn2("cannot query current terminal settings on fd %d: %s",
sock->dual.stream[1]->fd, strerror(errno));
} else {
sock->dual.stream[1]->ttyvalid = true;
}
}
#endif /* WITH_TERMIOS */
/* options here are one-time and one-direction, no second use */
retropt_bool(sock->stream.opts, OPT_IGNOREEOF, &sock->dual.stream[0]->ignoreeof);
/* extract opts that should be applied only once */
if ((optspr = copyopts(sock->stream.opts, GROUP_PROCESS)) == NULL) {
return -1;
}
/* here we copy opts, because most have to be applied twice! */
if ((sock->dual.stream[1]->opts = copyopts(sock->stream.opts, GROUP_FD|GROUP_APPL|(groups1&~GROUP_PROCESS))) == NULL) {
return -1;
}
sock->dual.stream[0]->opts = sock->stream.opts;
sock->stream.opts = NULL;
if (applyopts_single(sock->dual.stream[0],
sock->dual.stream[0]->opts, PH_INIT)
< 0)
return -1;
if (applyopts_single(sock->dual.stream[1],
sock->dual.stream[1]->opts, PH_INIT)
< 0)
return -1;
applyopts(sock->dual.stream[0], -1, sock->dual.stream[0]->opts, PH_INIT);
applyopts(sock->dual.stream[1], -1, sock->dual.stream[1]->opts, PH_INIT);
if ((result = applyopts(NULL, -1, optspr, PH_EARLY)) < 0)
return result;
if ((result = applyopts(NULL, -1, optspr, PH_PREOPEN)) < 0)
return result;
/* apply options to first FD */
if ((result =
applyopts(sock->dual.stream[0], -1,
sock->dual.stream[0]->opts, PH_ALL))
< 0) {
return result;
}
if ((result = _xio_openlate(sock->dual.stream[0],
sock->dual.stream[0]->opts)) < 0) {
return result;
}
#if 0
/* ignore this opt */
retropt_bool(sock->dual.stream[0]->opts, OPT_COOL_WRITE);
#endif
/* apply options to second FD */
if ((result = applyopts(sock->dual.stream[1], -1,
sock->dual.stream[1]->opts, PH_ALL)) < 0) {
return result;
}
if ((result = _xio_openlate(sock->dual.stream[1],
sock->dual.stream[1]->opts)) < 0) {
return result;
}
#if 0
if ((result = _xio_openlate(sock->dual.stream[1], optspr)) < 0) {
return result;
}
#endif
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(
int argc,
const char *argv[],
struct opt *opts,
int xioflags,
xiofile_t *fd,
const struct addrdesc *addrdesc)
{
int rw = (xioflags&XIO_ACCMODE);
if (argc != 1) {
Error2("%s: wrong number of parameters (%d instead of 0)", argv[0], argc-1);
}
if (rw == XIO_RDWR) {
return xioopen_stdio_bi(fd);
}
Notice2("using %s for %s",
&("stdin\0\0\0stdout"[rw<<3]),
ddirection[rw]);
return xioopen_fd(opts, rw, &fd->stream, rw);
}
/* 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_stdfd(
int argc,
const char *argv[],
struct opt *opts,
int xioflags,
xiofile_t *xfd,
const struct addrdesc *addrdesc)
{
int rw = (xioflags&XIO_ACCMODE);
int fd = addrdesc->arg1;
if (argc != 1) {
Error2("%s: wrong number of parameters (%d instead of 0)", argv[0], argc-1);
}
Notice2("using %s for %s",
&("stdin\0\0\0stdout\0\0stderr"[fd<<3]),
ddirection[rw]);
return xioopen_fd(opts, rw, &xfd->stream, fd);
}
#endif /* WITH_STDIO */
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