2.9BSD - /usr/src/lib/c/stdio/getpass.c

   1: /* @(#)getpass.c	4.2 (Berkeley) 7/1/81 */
   2: #include <stdio.h>
   3: #include <signal.h>
   4: #include <sgtty.h>
   5: 
   6: char *
   7: getpass(prompt)
   8: char *prompt;
   9: {
  10:     struct sgttyb ttyb;
  11:     int flags;
  12:     register char *p;
  13:     register c;
  14:     FILE *fi;
  15:     static char pbuf[9];
  16:     int (*signal())();
  17:     int (*sig)();
  18: 
  19:     if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL)
  20:         fi = stdin;
  21:     else
  22:         setbuf(fi, (char *)NULL);
  23:     sig = signal(SIGINT, SIG_IGN);
  24:     gtty(fileno(fi), &ttyb);
  25:     flags = ttyb.sg_flags;
  26:     ttyb.sg_flags &= ~ECHO;
  27:     stty(fileno(fi), &ttyb);
  28:     fprintf(stderr, "%s", prompt);
  29:     for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) {
  30:         if (p < &pbuf[8])
  31:             *p++ = c;
  32:     }
  33:     *p = '\0';
  34:     fprintf(stderr, "\n");
  35:     ttyb.sg_flags = flags;
  36:     stty(fileno(fi), &ttyb);
  37:     signal(SIGINT, sig);
  38:     if (fi != stdin)
  39:         fclose(fi);
  40:     return(pbuf);
  41: }

Defined functions