/*{{{ static void user_cont_signal (int sig)*/
static void user_cont_signal (int sig)
{
/* Advanced Programming in the UNIX Environment, Stevens; P321 */
sigset_t mask;
/* unblock SIGCONT since it is blocked while we're handling it */
sigemptyset (&mask);
sigaddset (&mask, SIGCONT);
sigprocmask (SIG_UNBLOCK, &mask, NULL);
if (stdin_is_tty) {
/* Save terminal state */
save_tty_state ();
}
/* Do default SIGCONT action - continue the process */
signal (SIGCONT, SIG_DFL);
kill (getpid(), SIGCONT);
}
char *fm_getpassword(char *prompt)
{
register char *p;
register int c;
FILE *fi;
static char pbuf[INPUT_BUF_SIZE];
SIGHANDLERTYPE sig = 0; /* initialization pacifies -Wall */
int istty = isatty(0);
/* get the file descriptor for the actual input device if it's a tty */
if (istty)
{
if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL)
fi = stdin;
else
setbuf(fi, (char *)NULL);
}
else
fi = stdin;
/* store descriptor for the tty */
ttyfd = fileno(fi);
if (istty)
{
/* preserve tty state before turning off echo */
save_tty_state();
/* now that we have the current tty state, we can catch SIGINT and
exit gracefully */
sig = set_signal_handler(SIGINT, sigint_handler);
/* turn off echo on the tty */
disable_tty_echo();
/* display the prompt and get the input string */
fprintf(stderr, "%s", prompt);
}
for (p = pbuf; (c = getc(fi))!='\n' && c!=EOF;)
{
if (p < &pbuf[INPUT_BUF_SIZE - 1])
*p++ = c;
}
*p = '\0';
/* write a newline so cursor won't appear to hang */
if (fi != stdin)
fprintf(stderr, "\n");
if (istty)
{
/* restore previous state of the tty */
restore_tty_state();
/* restore previous state of SIGINT */
set_signal_handler(SIGINT, sig);
}
if (fi != stdin)
fclose(fi); /* not checking should be safe, file mode was "r" */
return(pbuf);
}
