mirror of
https://repo.or.cz/socat.git
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96 lines
4.1 KiB
C
96 lines
4.1 KiB
C
/* source: xio-system.c */
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/* Copyright Gerhard Rieger 2001-2009 */
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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 system type */
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#include "xiosysincludes.h"
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#include "xioopen.h"
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#include "xio-progcall.h"
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#include "xio-system.h"
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#if WITH_SYSTEM
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static int xioopen_system(int arg, const char *argv[], struct opt *opts,
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int xioflags, /* XIO_RDONLY etc. */
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xiofile_t *fd,
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unsigned groups,
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int inter, int form, int dummy3
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);
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/* the endpoint variant: get stdin and/or stdout on "left" side. socat does not
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provide a "right" side for script */
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static const struct xioaddr_endpoint_desc xioendpoint_system1 = { XIOADDR_SYS, "system", 1, XIOBIT_ALL, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, XIOSHUT_UNSPEC, XIOCLOSE_UNSPEC, xioopen_system, false, 0, 0 HELP(":<shell-command>") };
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/* the inter address variant: the bidirectional form has stdin and stdout on
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its "left" side, and FDs 3 (for reading) and FD 4 (for writing) on its right
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side. */
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static const struct xioaddr_inter_desc xiointer_system1_2rw = { XIOADDR_INTER, "system", 1, XIOBIT_RDWR, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, XIOSHUT_UNSPEC, XIOCLOSE_UNSPEC, xioopen_system, true, 2, 0, XIOBIT_RDWR HELP(":<shell-command>") };
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static const struct xioaddr_inter_desc xiointer_system1_2ro = { XIOADDR_INTER, "system", 1, XIOBIT_RDONLY, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, XIOSHUT_UNSPEC, XIOCLOSE_UNSPEC, xioopen_system, true, 2, 0, XIOBIT_WRONLY HELP(":<shell-command>") };
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static const struct xioaddr_inter_desc xiointer_system1_2wo = { XIOADDR_INTER, "system", 1, XIOBIT_WRONLY, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, XIOSHUT_UNSPEC, XIOCLOSE_UNSPEC, xioopen_system, true, 2, 0, XIOBIT_RDONLY HELP(":<shell-command>") };
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/* the unidirectional inter address variant: the "left" side reads from stdin,
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and the right side reads from stdout. */
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static const struct xioaddr_inter_desc xiointer_system1_1wo = { XIOADDR_INTER, "system1", 1, XIOBIT_WRONLY, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT, XIOSHUT_UNSPEC, XIOCLOSE_UNSPEC, xioopen_system, true, 1, 0, XIOBIT_RDONLY HELP(":<shell-command>") };
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/* the general forms, designed for bidirectional transfer (stdio -- 3,4) */
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const union xioaddr_desc *xioaddrs_system[] = {
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(union xioaddr_desc *)&xioendpoint_system1,
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(union xioaddr_desc *)&xiointer_system1_2rw,
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(union xioaddr_desc *)&xiointer_system1_2ro,
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(union xioaddr_desc *)&xiointer_system1_2wo,
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NULL
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};
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/* unidirectional inter address (stdin -- stdout) */
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const union xioaddr_desc *xioaddrs_system1[] = {
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(union xioaddr_desc *)&xiointer_system1_1wo,
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NULL };
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static int xioopen_system(int argc, const char *argv[], struct opt *opts,
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int xioflags, /* XIO_RDONLY etc. */
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xiofile_t *fd,
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unsigned groups,
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int inter, int form, int dummy3
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) {
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int status;
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char *path = NULL;
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int duptostderr;
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int result;
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const char *string = argv[1];
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status = _xioopen_progcall(xioflags, &fd->stream, groups, &opts, &duptostderr, inter, form);
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if (status < 0) return status;
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if (status == 0) { /* child */
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int numleft;
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if (setopt_path(opts, &path) < 0) {
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/* this could be dangerous, so let us abort this child... */
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Exit(1);
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}
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if ((numleft = leftopts(opts)) > 0) {
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Error1("%d option(s) could not be used", numleft);
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showleft(opts);
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return STAT_NORETRY;
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}
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/* only now redirect stderr */
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if (duptostderr >= 0) {
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diag_dup();
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Dup2(duptostderr, 2);
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}
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Info1("executing shell command \"%s\"", string);
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result = System(string);
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if (result != 0) {
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Warn2("system(\"%s\") returned with status %d", string, result);
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Warn1("system(): %s", strerror(errno));
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}
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Exit(0); /* this child process */
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}
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/* parent */
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return 0;
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}
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#endif /* WITH_SYSTEM */
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