/**
* Systemd aware implementation of query_user_exec(). If systemd is not running
* it will fall back to use query_user_exec_builtin() instead.
*
*/
bool
query_user_exec()
{
bool ret = true; /* Presume everything goes okay */
int i;
/* If systemd is not available, use the default built-in mechanism */
if (!check_systemd_running())
{
return query_user_exec_builtin();
}
/* Loop through the complete query setup and when needed, collect the information */
for (i = 0; i < QUERY_USER_NUMSLOTS && query_user[i].response != NULL; i++)
{
if (!get_console_input_systemd(query_user[i].prompt, query_user[i].echo,
query_user[i].response, query_user[i].response_len) )
{
/* Force the final result state to failed on failure */
ret = false;
}
}
return ret;
}
/*
* Get input from console
*/
bool
get_console_input (const char *prompt, const bool echo, char *input, const int capacity)
{
bool ret = false;
ASSERT (prompt);
ASSERT (input);
ASSERT (capacity > 0);
input[0] = '\0';
#ifdef ENABLE_SYSTEMD
if (check_systemd_running ())
return get_console_input_systemd (prompt, echo, input, capacity);
#endif
#if defined(WIN32)
return get_console_input_win32 (prompt, echo, input, capacity);
#elif defined(HAVE_GETPASS)
/* did we --daemon'ize before asking for passwords?
* (in which case neither stdin or stderr are connected to a tty and
* /dev/tty can not be open()ed anymore)
*/
if ( !isatty(0) && !isatty(2) )
{
int fd = open( "/dev/tty", O_RDWR );
if ( fd < 0 )
{ msg(M_FATAL, "neither stdin nor stderr are a tty device and you have neither a controlling tty nor systemd - can't ask for '%s'. If you used --daemon, you need to use --askpass to make passphrase-protected keys work, and you can not use --auth-nocache.", prompt ); }
close(fd);
}
if (echo)
{
FILE *fp;
fp = open_tty (true);
fprintf (fp, "%s", prompt);
fflush (fp);
close_tty (fp);
fp = open_tty (false);
if (fgets (input, capacity, fp) != NULL)
{
chomp (input);
ret = true;
}
close_tty (fp);
}
else
{
char *gp = getpass (prompt);
if (gp)
{
strncpynt (input, gp, capacity);
memset (gp, 0, strlen (gp));
ret = true;
}
}
#else
msg (M_FATAL, "Sorry, but I can't get console input on this OS (%s)", prompt);
#endif
return ret;
}
