manual/examples/mygetpass.c

   1 #include <termios.h>
   2 #include <stdio.h>
   3
   4 ssize_t
   5 my_getpass (char **lineptr, size_t *n, FILE *stream)
   6 {
   7   struct termios old, new;
   8   int nread;
   9
  10   /* Turn echoing off and fail if we can't.  */
  11   if (tcgetattr (fileno (stream), &old) != 0)
  12     return -1;
  13   new = old;
  14   new.c_lflag &= ~ECHO;
  15   if (tcsetattr (fileno (stream), TCSAFLUSH, &new) != 0)
  16     return -1;
  17
  18   /* Read the password.  */
  19   nread = getline (lineptr, n, stream);
  20
  21   /* Restore terminal.  */
  22   (void) tcsetattr (fileno (stream), TCSAFLUSH, &old);
  23
  24   return nread;
  25 }