/*
* Creates the privileged monitor process. It returns twice.
* It returns 1 for the unprivileged slave process and 0 for the
* user-privileged slave process after successful authentication.
*/
int
monitor_init(void)
{
struct passwd *pw;
int pair[2];
if (socketpair(AF_LOCAL, SOCK_STREAM, PF_UNSPEC, pair) == -1)
fatalx("socketpair failed");
fd_monitor = pair[0];
fd_slave = pair[1];
set_monitor_signals();
slave_pid = fork();
if (slave_pid == -1)
fatalx("fork of unprivileged slave failed");
if (slave_pid == 0) {
/* Unprivileged slave */
set_slave_signals();
if ((pw = getpwnam(FTPD_PRIVSEP_USER)) == NULL)
fatalx("privilege separation user %s not found",
FTPD_PRIVSEP_USER);
if (chroot(pw->pw_dir) == -1)
fatalx("chroot %s: %m", pw->pw_dir);
if (chdir("/") == -1)
fatalx("chdir /: %m");
if (setgroups(1, &pw->pw_gid) == -1)
fatalx("setgroups: %m");
if (setegid(pw->pw_gid) == -1)
fatalx("setegid failed");
if (setgid(pw->pw_gid) == -1)
fatalx("setgid failed");
if (seteuid(pw->pw_uid) == -1)
fatalx("seteuid failed");
if (setuid(pw->pw_uid) == -1)
fatalx("setuid failed");
endpwent();
close(fd_slave);
return (1);
}
#ifdef HASSETPROCTITLE
setproctitle("%s: [priv pre-auth]", remotehost);
#endif
handle_cmds();
/* User-privileged slave */
return (0);
}
void pipe_exec_cmd(t_state *state, char *line, int stdin, int stdout)
{
char **cmds;
int fd_in;
int fd_out;
fd_in = 0;
fd_out = 0;
handle_dup2_pipe(state, stdin, stdout);
cmds = pipe_get_cmds(line, &fd_out, &fd_in);
handle_dup2_redirection(state, fd_in, fd_out);
handle_cmds(state, line, cmds);
free_everything(cmds, state);
exit(0);
}
void handle_line(t_state *state, char *line)
{
char **cmds;
int redirection_count;
redirection_count = ft_wordcountwith_redirection(line, "<|>&");
if (redirection_count > 1)
{
if (!is_valid_cmd(state->pwd))
print_no_such_file_or_dir(state, state->shell_name, state->pwd);
else if (check_if_valid_entry(state, line))
run_redirection(state, line);
}
else if (redirection_count == 1)
{
cmds = ft_strsplitwith_quote(line, " \t", 1);
if (cmds && cmds[0])
handle_cmds(state, line, cmds);
ft_strtabdel(&cmds);
}
}
