projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 6476f6e0 BJ |
1 | /* df.c 4.1 81/05/09 */ |
| 2 | /* | |
| 3 | * Dial the DF02-AC | |
| 4 | */ | |
| 5 | ||
| 6 | #include "tip.h" | |
| 7 | #if DF02 | |
| 8 | #include <setjmp.h> | |
| 9 | ||
| 10 | static jmp_buf Sjbuf; | |
| 11 | static timeout(); | |
| 12 | ||
| 13 | df_dialer(num, acu) | |
| 14 | char *num, *acu; | |
| 15 | { | |
| 16 | register int f = FD; | |
| 17 | int c; | |
| 18 | ||
| 19 | ioctl(f, TIOCHPCL, 0); /* make sure it hangs up when done */ | |
| 20 | if (setjmp(Sjbuf)) { | |
| 21 | printf("connection timed out\r\n"); | |
| 22 | df_disconnect(); | |
| 23 | return(0); | |
| 24 | } | |
| 25 | if (boolean(value(VERBOSE))) | |
| 26 | printf("\ndialing..."); | |
| 27 | fflush(stdout); | |
| 28 | signal(SIGALRM, timeout); | |
| 29 | alarm(5 * strlen(num) + 10); | |
| 30 | ioctl(f, TIOCFLUSH, 0); | |
| 31 | write(f, "\001", 1); | |
| 32 | sleep(0); /* this must waste 70 ms. */ | |
| 33 | write(f, "\002", 1); | |
| 34 | write(f, num, strlen(num)); | |
| 35 | c = 0; | |
| 36 | read(f, (char *)&c, 1); | |
| 37 | return(c == 'A'); | |
| 38 | } | |
| 39 | ||
| 40 | ||
| 41 | df_disconnect() | |
| 42 | { | |
| 43 | write(FD, "\001", 1); | |
| 44 | sleep(1); | |
| 45 | ioctl(FD, TIOCFLUSH, 0); | |
| 46 | } | |
| 47 | ||
| 48 | ||
| 49 | df_abort() | |
| 50 | { | |
| 51 | write(FD, "\001", 1); | |
| 52 | sleep(1); | |
| 53 | ioctl(FD, TIOCFLUSH, 0); | |
| 54 | } | |
| 55 | ||
| 56 | ||
| 57 | static | |
| 58 | timeout() | |
| 59 | { | |
| 60 | longjmp(Sjbuf, 1); | |
| 61 | } | |
| 62 | #endif |