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152 lines
6 KiB
C
152 lines
6 KiB
C
/* $Id: xio-stdio.c,v 1.18 2006/12/28 14:07:01 gerhard Exp $ */
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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 stdio type */
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#include "xiosysincludes.h"
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#include "xioopen.h"
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#include "xio-fdnum.h"
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#include "xio-stdio.h"
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#if WITH_STDIO
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static int xioopen_stdio(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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static int xioopen_stdfd(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int fd, int dummy2, int dummy3);
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/* we specify all option groups that we can imagine for a FD, becasue the
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changed parsing mechanism does not allow us to check the type of FD before
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applying the options */
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static const struct xioaddr_endpoint_desc xioaddr_stdio0 = { XIOADDR_SYS, "stdio", 0, XIOBIT_ALL, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, XIOSHUT_NONE, XIOCLOSE_NONE, xioopen_stdio, 0, 0, 0 HELP(NULL) };
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static const struct xioaddr_endpoint_desc xioaddr_stdin0 = { XIOADDR_SYS, "stdin", 0, XIOBIT_RDONLY, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, XIOSHUT_NONE, XIOCLOSE_NONE, xioopen_stdfd, 0, 0, 0 HELP(NULL) };
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static const struct xioaddr_endpoint_desc xioaddr_stdout0 = { XIOADDR_SYS, "stdout", 0, XIOBIT_WRONLY, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, XIOSHUT_NONE, XIOCLOSE_NONE, xioopen_stdfd, 1, 0, 0 HELP(NULL) };
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static const struct xioaddr_endpoint_desc xioaddr_stderr0 = { XIOADDR_SYS, "stderr", 0, XIOBIT_WRONLY, GROUP_FD|GROUP_FIFO|GROUP_CHR|GROUP_BLK|GROUP_FILE|GROUP_SOCKET|GROUP_TERMIOS|GROUP_SOCK_UNIX|GROUP_SOCK_IP|GROUP_IPAPP, XIOSHUT_NONE, XIOCLOSE_NONE, xioopen_stdfd, 2, 0, 0 HELP(NULL) };
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const union xioaddr_desc *xioaddrs_stdio[] = {
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(union xioaddr_desc *)&xioaddr_stdio0, NULL };
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const union xioaddr_desc *xioaddrs_stdin[] = {
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(union xioaddr_desc *)&xioaddr_stdin0, NULL };
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const union xioaddr_desc *xioaddrs_stdout[] = {
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(union xioaddr_desc *)&xioaddr_stdout0, NULL };
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const union xioaddr_desc *xioaddrs_stderr[] = {
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(union xioaddr_desc *)&xioaddr_stderr0, NULL };
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/* process a bidirectional "stdio" or "-" argument with options.
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generate a dual address. */
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int xioopen_stdio_bi(xiofile_t *sock) {
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struct opt *opts1, *opts2, *optspr;
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unsigned int groups1 = xioaddr_stdio0.groups, groups2 = xioaddr_stdio0.groups;
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int result;
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sock->stream.fd1 = 0 /*stdin*/;
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sock->stream.fd2 = 1 /*stdout*/;
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sock->stream.fdtype = FDTYPE_DOUBLE;
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#if WITH_TERMIOS
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if (Isatty(sock->stream.fd1)) {
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if (Tcgetattr(sock->stream.fd1,
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&sock->stream.savetty)
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< 0) {
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Warn2("cannot query current terminal settings on fd %d: %s",
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sock->stream.fd1, strerror(errno));
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} else {
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sock->stream.ttyvalid = true;
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}
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}
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if (Isatty(sock->stream.fd2)) {
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if (Tcgetattr(sock->stream.fd2,
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&sock->stream.savetty)
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< 0) {
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Warn2("cannot query current terminal settings on fd %d: %s",
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sock->stream.fd2, strerror(errno));
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} else {
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sock->stream.ttyvalid = true;
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}
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}
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#endif /* WITH_TERMIOS */
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if (applyopts_single(&sock->stream, sock->stream.opts, PH_INIT) < 0) return -1;
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applyopts(-1, sock->stream.opts, PH_INIT);
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/* options here are one-time and one-direction, no second use */
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retropt_bool(sock->stream.opts, OPT_IGNOREEOF, &sock->stream.ignoreeof);
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/* extract opts that should be applied only once */
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if ((optspr = copyopts(sock->stream.opts, GROUP_PROCESS)) == NULL) {
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return -1;
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}
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if ((result = applyopts(-1, optspr, PH_EARLY)) < 0)
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return result;
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if ((result = applyopts(-1, optspr, PH_PREOPEN)) < 0)
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return result;
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/* here we copy opts, because most have to be applied twice! */
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if ((opts1 = copyopts(sock->stream.opts, GROUP_FD|GROUP_APPL|(groups1&~GROUP_PROCESS))) == NULL) {
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return -1;
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}
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/* apply options to first FD */
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if ((result = applyopts(sock->stream.fd1, opts1, PH_ALL)) < 0) {
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return result;
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}
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if ((result = _xio_openlate(&sock->stream, opts1)) < 0) {
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return result;
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}
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if ((opts2 = copyopts(sock->stream.opts, GROUP_FD|GROUP_APPL|(groups2&~GROUP_PROCESS))) == NULL) {
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return -1;
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}
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/* apply options to second FD */
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if ((result = applyopts(sock->stream.fd2, opts2, PH_ALL)) < 0) {
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return result;
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}
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if ((result = _xio_openlate(&sock->stream, opts2)) < 0) {
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return result;
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}
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if ((result = _xio_openlate(&sock->stream, optspr)) < 0) {
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return result;
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}
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Notice("reading from and writing to stdio");
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return 0;
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}
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/* wrap around unidirectional xioopensingle and xioopen_fd to automatically determine stdin or stdout fd depending on rw.
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Do not set FD_CLOEXEC flag. */
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static int xioopen_stdio(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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int rw = (xioflags&XIO_ACCMODE);
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if (argc != 1) {
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Error2("%s: wrong number of parameters (%d instead of 0)", argv[0], argc-1);
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}
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if (rw == XIO_RDWR) {
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return xioopen_stdio_bi(fd);
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}
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Notice2("using %s for %s",
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&("stdin\0\0\0stdout"[rw<<3]),
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ddirection[rw]);
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return xioopen_fd(opts, rw, fd, rw, -1, dummy2, dummy3);
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}
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/* wrap around unidirectional xioopensingle and xioopen_fd to automatically determine stdin or stdout fd depending on rw.
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Do not set FD_CLOEXEC flag. */
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static int xioopen_stdfd(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int fd, int dummy2, int dummy3) {
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int rw = (xioflags&XIO_ACCMODE);
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if (argc != 1) {
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Error2("%s: wrong number of parameters (%d instead of 0)", argv[0], argc-1);
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}
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Notice2("using %s for %s",
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&("stdin\0\0\0stdout\0\0stderr"[fd<<3]),
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ddirection[rw]);
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return xioopen_fd(opts, rw, xfd, fd, -1, dummy2, dummy3);
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}
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#endif /* WITH_STDIO */
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