projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 4ca10280 SL |
1 | #ifndef lint |
| 2 | static char *sccsid = "@(#)lock.c 4.3 (Berkeley) %G%"; | |
| 3 | #endif | |
| 4 | ||
| 5 | /* | |
| 6 | * Lock a terminal up until the knowledgeable Joe returns. | |
| 7 | */ | |
| d97d0c53 BJ |
8 | #include <stdio.h> |
| 9 | #include <sys/types.h> | |
| 36e4dcd1 | 10 | #include <sys/stat.h> |
| d97d0c53 BJ |
11 | #include <signal.h> |
| 12 | #include <sgtty.h> | |
| 13 | ||
| d97d0c53 BJ |
14 | char masterp[] = "hasta la vista\n"; |
| 15 | struct sgttyb tty, ntty; | |
| 16 | char s[BUFSIZ], s1[BUFSIZ]; | |
| 17 | ||
| 18 | main(argc, argv) | |
| 19 | char **argv; | |
| 20 | { | |
| 21 | register int t; | |
| 22 | struct stat statb; | |
| 23 | ||
| 4ca10280 SL |
24 | signal(SIGINT, SIG_IGN); |
| 25 | signal(SIGQUIT, SIG_IGN); | |
| 26 | signal(SIGTSTP, SIG_IGN); | |
| d97d0c53 BJ |
27 | if (argc > 0) |
| 28 | argv[0] = 0; | |
| 4ca10280 | 29 | if (ioctl(0, TIOCGETP, &tty)) |
| d97d0c53 BJ |
30 | exit(1); |
| 31 | ntty = tty; ntty.sg_flags &= ~ECHO; | |
| 4ca10280 | 32 | ioctl(0, TIOCSETN, &ntty); |
| d97d0c53 BJ |
33 | printf("Key: "); |
| 34 | fgets(s, sizeof s, stdin); | |
| 35 | printf("\nAgain: "); | |
| 36 | fgets(s1, sizeof s1, stdin); | |
| 37 | putchar('\n'); | |
| 38 | if (strcmp(s1, s)) { | |
| 39 | putchar(07); | |
| 40 | stty(0, &tty); | |
| 41 | exit(1); | |
| 42 | } | |
| 43 | s[0] = 0; | |
| 44 | for (;;) { | |
| 45 | fgets(s, sizeof s, stdin); | |
| 46 | if (strcmp(s1, s) == 0) | |
| 47 | break; | |
| 48 | if (strcmp(s, masterp) == 0) | |
| 49 | break; | |
| 50 | putchar(07); | |
| 4ca10280 | 51 | if (ioctl(0, TIOCGETP, &ntty)) |
| d97d0c53 BJ |
52 | exit(1); |
| 53 | } | |
| 4ca10280 | 54 | ioctl(0, TIOCSETN, &tty); |
| d97d0c53 | 55 | } |