| 1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)getpass.c 5.1 (Berkeley) %G%"; |
| 3 | #endif not lint |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <signal.h> |
| 7 | #include <sgtty.h> |
| 8 | |
| 9 | char * |
| 10 | getpass(prompt) |
| 11 | char *prompt; |
| 12 | { |
| 13 | struct sgttyb ttyb; |
| 14 | int flags; |
| 15 | register char *p; |
| 16 | register c; |
| 17 | FILE *fi; |
| 18 | static char pbuf[9]; |
| 19 | int (*signal())(); |
| 20 | int (*sig)(); |
| 21 | |
| 22 | if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL) |
| 23 | fi = stdin; |
| 24 | else |
| 25 | setbuf(fi, (char *)NULL); |
| 26 | sig = signal(SIGINT, SIG_IGN); |
| 27 | ioctl(fileno(fi), TIOCGETP, &ttyb); |
| 28 | flags = ttyb.sg_flags; |
| 29 | ttyb.sg_flags &= ~ECHO; |
| 30 | ioctl(fileno(fi), TIOCSETP, &ttyb); |
| 31 | fprintf(stderr, "%s", prompt); fflush(stderr); |
| 32 | for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) { |
| 33 | if (p < &pbuf[8]) |
| 34 | *p++ = c; |
| 35 | } |
| 36 | *p = '\0'; |
| 37 | fprintf(stderr, "\n"); fflush(stderr); |
| 38 | ttyb.sg_flags = flags; |
| 39 | ioctl(fileno(fi), TIOCSETP, &ttyb); |
| 40 | signal(SIGINT, sig); |
| 41 | if (fi != stdin) |
| 42 | fclose(fi); |
| 43 | return(pbuf); |
| 44 | } |