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Diffstat (limited to 'usr.bin/tip/aculib/ventel.c')
| -rw-r--r-- | usr.bin/tip/aculib/ventel.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/usr.bin/tip/aculib/ventel.c b/usr.bin/tip/aculib/ventel.c new file mode 100644 index 0000000..28b0d28 --- /dev/null +++ b/usr.bin/tip/aculib/ventel.c @@ -0,0 +1,251 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)ventel.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +/* + * Routines for calling up on a Ventel Modem + * The Ventel is expected to be strapped for local echo (just like uucp) + */ +#include "tip.h" + +#define MAXRETRY 5 + +static void sigALRM(); +static int timeout = 0; +static jmp_buf timeoutbuf; + +/* + * some sleep calls have been replaced by this macro + * because some ventel modems require two <cr>s in less than + * a second in order to 'wake up'... yes, it is dirty... + */ +#define delay(num,denom) busyloop(CPUSPEED*num/denom) +#define CPUSPEED 1000000 /* VAX 780 is 1MIPS */ +#define DELAY(n) { register long N = (n); while (--N > 0); } +busyloop(n) { DELAY(n); } + +ven_dialer(num, acu) + register char *num; + char *acu; +{ + register char *cp; + register int connected = 0; + char *msg, *index(), line[80]; + static int gobble(), vensync(); + static void echo(); + + /* + * Get in synch with a couple of carriage returns + */ + if (!vensync(FD)) { + printf("can't synchronize with ventel\n"); +#ifdef ACULOG + logent(value(HOST), num, "ventel", "can't synch up"); +#endif + return (0); + } + if (boolean(value(VERBOSE))) + printf("\ndialing..."); + fflush(stdout); + ioctl(FD, TIOCHPCL, 0); + echo("#k$\r$\n$D$I$A$L$:$ "); + for (cp = num; *cp; cp++) { + delay(1, 10); + write(FD, cp, 1); + } + delay(1, 10); + write(FD, "\r", 1); + gobble('\n', line); + if (gobble('\n', line)) + connected = gobble('!', line); + ioctl(FD, TIOCFLUSH); +#ifdef ACULOG + if (timeout) { + sprintf(line, "%d second dial timeout", + number(value(DIALTIMEOUT))); + logent(value(HOST), num, "ventel", line); + } +#endif + if (timeout) + ven_disconnect(); /* insurance */ + if (connected || timeout || !boolean(value(VERBOSE))) + return (connected); + /* call failed, parse response for user */ + cp = index(line, '\r'); + if (cp) + *cp = '\0'; + for (cp = line; cp = index(cp, ' '); cp++) + if (cp[1] == ' ') + break; + if (cp) { + while (*cp == ' ') + cp++; + msg = cp; + while (*cp) { + if (isupper(*cp)) + *cp = tolower(*cp); + cp++; + } + printf("%s...", msg); + } + return (connected); +} + +ven_disconnect() +{ + + close(FD); +} + +ven_abort() +{ + + write(FD, "\03", 1); + close(FD); +} + +static void +echo(s) + register char *s; +{ + char c; + + while (c = *s++) switch (c) { + + case '$': + read(FD, &c, 1); + s++; + break; + + case '#': + c = *s++; + write(FD, &c, 1); + break; + + default: + write(FD, &c, 1); + read(FD, &c, 1); + } +} + +static void +sigALRM() +{ + printf("\07timeout waiting for reply\n"); + timeout = 1; + longjmp(timeoutbuf, 1); +} + +static int +gobble(match, response) + register char match; + char response[]; +{ + register char *cp = response; + sig_t f; + char c; + + f = signal(SIGALRM, sigALRM); + timeout = 0; + do { + if (setjmp(timeoutbuf)) { + signal(SIGALRM, f); + *cp = '\0'; + return (0); + } + alarm(number(value(DIALTIMEOUT))); + read(FD, cp, 1); + alarm(0); + c = (*cp++ &= 0177); +#ifdef notdef + if (boolean(value(VERBOSE))) + putchar(c); +#endif + } while (c != '\n' && c != match); + signal(SIGALRM, SIG_DFL); + *cp = '\0'; + return (c == match); +} + +#define min(a,b) ((a)>(b)?(b):(a)) +/* + * This convoluted piece of code attempts to get + * the ventel in sync. If you don't have FIONREAD + * there are gory ways to simulate this. + */ +static int +vensync(fd) +{ + int already = 0, nread; + char buf[60]; + + /* + * Toggle DTR to force anyone off that might have left + * the modem connected, and insure a consistent state + * to start from. + * + * If you don't have the ioctl calls to diddle directly + * with DTR, you can always try setting the baud rate to 0. + */ + ioctl(FD, TIOCCDTR, 0); + sleep(1); + ioctl(FD, TIOCSDTR, 0); + while (already < MAXRETRY) { + /* + * After reseting the modem, send it two \r's to + * autobaud on. Make sure to delay between them + * so the modem can frame the incoming characters. + */ + write(fd, "\r", 1); + delay(1,10); + write(fd, "\r", 1); + sleep(2); + if (ioctl(fd, FIONREAD, (caddr_t)&nread) < 0) { + perror("tip: ioctl"); + continue; + } + while (nread > 0) { + read(fd, buf, min(nread, 60)); + if ((buf[nread - 1] & 0177) == '$') + return (1); + nread -= min(nread, 60); + } + sleep(1); + already++; + } + return (0); +} + |
