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98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/* source: xio-shell.c */
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/* Copyright Gerhard Rieger and contributors (see file CHANGES) */
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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 shell 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-shell.h"
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#if WITH_SHELL
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static int xioopen_shell(int arg, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, const struct addrdesc *addrdesc);
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const struct addrdesc xioaddr_shell = { "SHELL", 3, xioopen_shell, GROUP_FD|GROUP_FORK|GROUP_EXEC|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_TERMIOS|GROUP_FIFO|GROUP_PTY|GROUP_PARENT|GROUP_SHELL, 1, 0, 0 HELP(":<shell-command>") };
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const struct optdesc opt_shell = { "shell", NULL, OPT_SHELL, GROUP_SHELL, PH_PREEXEC, TYPE_STRING, OFUNC_SPEC, 0, 0 };
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static int xioopen_shell(
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int argc,
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const char *argv[],
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struct opt *opts,
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int xioflags,
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xiofile_t *xfd,
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const struct addrdesc *addrdesc)
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{
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struct single *sfd = &xfd->stream;
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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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char *shellpath = NULL;
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const char *shellname;
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const char *string = argv[1];
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if (argc != 2) {
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xio_syntax(argv[0], 1, argc-1, addrdesc->syntax);
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return STAT_NORETRY;
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}
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shellpath = getenv("SHELL");
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retropt_string(opts, OPT_SHELL, &shellpath);
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if (shellpath == NULL) {
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Error("SHELL variable undefined");
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errno = EINVAL;
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return -1;
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}
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shellname = strrchr(shellpath, '/');
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if (shellname == NULL) {
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Error1("SHELL \"%s\" variable does not specify a path (has no '/')", shellpath);
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errno = EINVAL;
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return -1;
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}
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++shellname;
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status = _xioopen_foxec(xioflags, sfd, addrdesc->groups, &opts, &duptostderr);
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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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Setenv("SHELL", shellpath, 1);
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Info1("executing shell command \"%s\"", string);
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Debug3("execl(\"%s\", \"%s\", \"-c\", \"%s\", NULL",
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shellpath, shellname, string);
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result = execl(shellpath, shellname, "-c", string, (char *)NULL);
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if (result != 0) {
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Warn2("execl(\"%s\") returned with status %d", string, result);
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Warn1("execl(): %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_SHELL */
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