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From: gil@limbic.ssdl.com (Gil Kloepfer Jr.)
Subject: [FreeBSD] expect-send dialer for slattach
Message-ID: <1993Dec13.032545.5656@nuchat.sccsi.com>
Sender: usenet@nuchat.sccsi.com (Netnews Administrator)
Nntp-Posting-Host: limbic.ssdl.com
Organization: Southwest Systems Development Labs, Sugar Land, TX
Date: Mon, 13 Dec 1993 03:25:45 GMT
Lines: 1272
I'm not sure if this is an appropriate place to post this, whether
the program has been done before by someone else, or even if will work
for the general public. I found it to be useful, so I'm posting it
here with the thought it may be for someone else. It's short.
Basically, it's a utility program to do expect-send style dialing
in conjunction with the new slattach in FreeBSD. I use it to establish
and maintain my SLIP connection. There's some examples of how I use
it in the shar.
Enjoy!
-- Cut Here -- -- Cut Here -- -- Cut Here -- -- Cut Here -- -- Cut Here --
# This is a shell archive. Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file". Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
# README
# COPYING
# Makefile
# expsend.c
# expsend.1
# example
# example/slip.expsend
# example/slip.slconfig
# example/slip.slexit
# example/slipdial.sh
#
echo x - README
sed 's/^X//' >README << 'END-of-README'
XThis is expsend - a simple program to handle expect-send sequences when
Xtalking to a modem.
X
XThere are better programs which do this I hear, but I wanted something
Xquick and dirty to use with the FreeBSD "slattach" command which allows
Xdialing and redialing SLIP lines. This program enabled me to bring my
XSLIP connection back up when the line dropped, and to initiate the
Xcall.
X
XI include an example of how I use this with the FreeBSD slattach program.
XYou can use it however it suits you as long as it complies with the
XGNU General Public License as stated in the program source.
X
XIf you make improvements to this, please send a context diff along
Xto me! If you have recommendations for something better, send it
Xalong too. Flames to /dev/null, praise to gil@limbic.ssdl.com. :)
X
XGil Kloepfer, Jr.
Xgil@limbic.ssdl.com
X12/11/1993
END-of-README
echo x - COPYING
sed 's/^X//' >COPYING << 'END-of-COPYING'
X GNU GENERAL PUBLIC LICENSE
X Version 2, June 1991
X
X Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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END-of-COPYING
echo x - Makefile
sed 's/^X//' >Makefile << 'END-of-Makefile'
X#
X# Very simple Makefile for expsend.c
X#
X
XCC=cc
XCFLAGS=-O
XLDFLAGS=-s
X
XBINDIR=/usr/local/bin
XMANDIR=/usr/local/man/man1
X
X# Set -DOPEN_BLOCKS for the IBM RT or whenever you use a TTY where the
X# open will block waiting for a carrier
XDEFS=
X#DEFS=-DOPEN_BLOCKS
X
Xexpsend: expsend.c
X $(CC) $(DEFS) $(CFLAGS) -o expsend expsend.c $(LDFLAGS)
X
X
Xshar:
X shar README COPYING Makefile expsend.c expsend.1 example example/* > expsend.shar
X
Xclean:
X rm -f core core.* *.o
X
Xspotless: clean
X rm -f expsend
X
Xinstall: expsend
X cp expsend $(BINDIR)
X cp expsend.1 $(MANDIR)
X chmod 755 $(BINDIR)/expsend
X chmod 644 $(MANDIR)/expsend.1
X chown bin $(BINDIR)/expsend $(MANDIR)/expsend.1
X chgrp bin $(BINDIR)/expsend $(MANDIR)/expsend.1
END-of-Makefile
echo x - expsend.c
sed 's/^X//' >expsend.c << 'END-of-expsend.c'
X/* expsend.c -- a simple, standalone expect-send program for automating
X the logon sequence to another system
X Copyright (C) 1993 Gilbert C. Kloepfer, Jr. All Rights Reserved
X
X This program is free software; you can redistribute it and/or modify
X it under the terms of the GNU General Public License as published by
X the Free Software Foundation; either version 2 of the License, or
X (at your option) any later version.
X
X This program is distributed in the hope that it will be useful,
X but WITHOUT ANY WARRANTY; without even the implied warranty of
X MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X GNU General Public License for more details.
X
X You should have received a copy of the GNU General Public License
X along with this program; see the file COPYING. If not, write to
X the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X
X You may contact the author by:
X E-mail: gil@limbic.ssdl.com
X US-mail: Gilbert C. Kloepfer, Jr.
X 2427 Manorwood Dr.
X Sugar Land, TX 77478
X USA
X
X*************************************************************************/
X
X/*
X * Expsend provides a means to automate the login and connect procedure
X * to a remote system.
X *
X * Special characters are escaped with backslash (\) and the following
X * are special sequences recognized by the program:
X *
X * \r - carriage return (ASCII 13)
X * \n - carraige-return/linefeed (ASCII 13/10)
X * \\ - backslash
X * \d - delay (about 2 seconds)
X * \p - delay (something a second or less)
X * \b - space
X * \X - nothing (for "expect nothing")
X * \c - don't send carriage return at end of string
X * \F - Remainder of string contains one or more fail strings
X *
X *
X * The input data consists of expect-strings followed by send-strings. The
X * send-string is sent on successful completion of expect-string. A special
X * escape code \F may be included as part of any expect-string to provide
X * one or more fail-strings.
X *
X * The input data is scanned character-by-character until a match is
X * discovered with the expect-string or fail-string. If a fail-string is
X * matched, processing ceases and the program exits according to the
X * failure mode processing. If the expect-string is matched, the send-string
X * is then sent with all special escapes translated followed by a carriage
X * return (unless \c is present).
X *
X * Upon successful completion of the expect-send dialogue, the program will
X * exit with a status of 0.
X */
X
X#ifndef lint
Xstatic char cheapversion[] = "@(#) expsend.c 1.0 12/11/1993\n";
Xstatic char copyright[] =
X"@(#) Copyright (C) 1993 Gilbert C. Kloepfer, Jr. All Rights Reserved\n";
X#endif /* lint */
X
X#include <unistd.h>
X#include <stdio.h>
X#include <stdlib.h>
X#include <string.h>
X#include <syslog.h>
X#include <sys/termios.h>
X#include <sys/ioctl.h>
X#include <signal.h>
X#include <fcntl.h>
X
X/*
X * The following #defines should not need to be modified, but can be
X * for those who understand the inner workings of the code
X *
X * IOSIZE = The number of characters sucked-in per read(2) call.
X * I don't know if it works with any bigger number XXX
X * PATHSIZE = The maximum size a pathname can be
X * NUM_EXPECTS = The maximum number of "expect" (expect + n * fail)
X * sequences the program will allow
X * DEFAULT_TMOUT = The default timeout period for a completely failed or
X * hung dial sequence (seconds)
X */
X
X#define IOSIZE 1
X#define PATHSIZE 128
X#define NUM_EXPECTS 10
X#define DEFAULT_TMOUT 90
X
X/*
X * Decide whether to use nonblocking open or not (IBM RT or when
X * needed)
X */
X#ifdef OPEN_BLOCKS
X# define TTY_OPEN_MODE (O_RDWR | O_NONBLOCK)
X#else
X# define TTY_OPEN_MODE (O_RDWR)
X#endif /* OPEN_BLOCKS */
X
Xextern char *optarg;
Xextern int optind;
X
Xchar *progname; /* Points to name of program */
Xchar esfile[PATHSIZE]; /* File to get expect-send info from */
Xchar usetty[PATHSIZE]; /* tty to do I/O on (if not stdin/out) */
Xtime_t failtime; /* Seconds to wait to exit after failure */
Xint gagchars; /* # irrelivant characters before gagging */
Xint use_syslog; /* Use BSD syslog for recording messages */
Xint debug_on; /* write debug messages to stderr */
Xint do_sendhup; /* Send hangup on failure */
Xu_int expect_tmout; /* Timeout for expect sequence to happen */
X
XFILE *esfp; /* Expect-send file I/O pointer */
Xint ttyfd; /* tty to do I/O with */
Xint tt_setup_done = 0; /* Set to 1 if tty setup has been done */
Xstruct termios tiottysv; /* Saved tty params (before changed) */
Xstruct termios tiostty; /* Current tty params */
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X{
X int arg;
X char inputb[128];
X int es_expect(), es_send();
X void expect_timer();
X int statusind = 0;
X
X
X /*
X * Get program name for error messages
X */
X
X if ((progname=rindex(argv[0], '/')) != NULL)
X progname++;
X else
X progname = argv[0];
X
X /*
X * Initial flag/arg settings
X */
X
X esfile[0] = '\0';
X (void)strcpy(usetty, ttyname(0));
X failtime = 0;
X gagchars = 0;
X use_syslog = 0;
X debug_on = 0;
X do_sendhup = 0;
X expect_tmout = DEFAULT_TMOUT;
X
X /*
X * Parse args
X */
X
X while ((arg=getopt(argc, argv, "dt:F:G:T:SH")) != EOF) {
X switch(arg) {
X case 'd': /* enable debugging */
X debug_on = 1;
X break;
X
X case 't': /* tty to do I/O with */
X (void)strcpy(usetty, optarg);
X break;
X
X case 'G': /* How many characters before gagging */
X gagchars = atoi(optarg);
X break;
X
X case 'H': /* Send hangup (stty 0) on failure */
X do_sendhup = 1;
X break;
X
X case 'F': /* Time to wait after failure */
X failtime = (time_t)atol(optarg);
X break;
X
X case 'S': /* Use syslog to log errors/notices */
X use_syslog = 1;
X break;
X
X case 'T': /* Modify expect timeout */
X expect_tmout = (u_int)atoi(optarg);
X break;
X
X case '?':
X usage();
X exit(1);
X }
X }
X
X if (optind >= argc) {
X usage();
X exit(1);
X }
X (void)strcpy(esfile, argv[optind++]);
X
X /*
X * Open any files and validate args
X */
X
X if (failtime < 0)
X failtime = 0;
X
X if (gagchars < 0)
X gagchars = 0;
X
X if (use_syslog)
X openlog(progname, 0, LOG_USER);
X
X esfp = fopen(esfile, "r");
X if (esfp == NULL) {
X log_perror(esfile);
X fail(2);
X }
X
X if (usetty[0] == '\0') {
X log_msg("tty has not been specified or is not a tty");
X fail(2);
X }
X
X ttyfd = open(usetty, TTY_OPEN_MODE);
X if (ttyfd < 0) {
X log_perror(usetty);
X fail(2);
X }
X
X#ifdef OPEN_BLOCKS
X if (fcntl(ttyfd, F_SETFL, fcntl(ttyfd, F_GETFL, 0) & ~O_NONBLOCK) < 0) {
X log_perror(usetty);
X fail(2);
X }
X#endif /* OPEN_BLOCKS */
X
X if (debug_on)
X (void)fprintf(stderr,
X "%s: esfile=%s tty=%s failtime=%ld gag=%d\n",
X progname, esfile, usetty, failtime, gagchars);
X
X /*
X * Establish terminal parameters which will be needed for
X * doing character-by-character I/O
X */
X
X if (ioctl(ttyfd, TIOCGETA, &tiottysv) < 0) {
X log_perror("TIOCGETA");
X fail(2);
X }
X bcopy(&tiottysv, &tiostty, sizeof(struct termios));
X
X tiostty.c_iflag |= (IGNBRK | ISTRIP);
X tiostty.c_iflag &= ~(IXON | IXOFF | IXANY);
X tiostty.c_oflag = 0;
X tiostty.c_cflag |= (CS8 | CLOCAL);
X tiostty.c_lflag = NOFLSH;
X tiostty.c_cc[VMIN] = 1;
X tiostty.c_cc[VTIME] = 1;
X
X if (ioctl(ttyfd, TIOCSETAF, &tiostty) < 0) {
X log_perror("TIOCSETAF");
X fail(2);
X }
X
X tt_setup_done = 1;
X
X /*
X * Main loop - Perform expect-send tasks until all strings
X * are exhausted, then break from the loop so that the
X * remote line characteristics can be returned to normal
X */
X
X while (1) {
X if (fgets(inputb, 128, esfp) == NULL)
X break;
X
X if (expect_tmout != 0) {
X (void)signal(SIGALRM, expect_timer);
X alarm(expect_tmout);
X }
X
X if (es_expect(inputb) < 0)
X fail(2);
X
X if (expect_tmout != 0) {
X (void)signal(SIGALRM, SIG_IGN);
X alarm(0);
X }
X
X if (fgets(inputb, 128, esfp) == NULL)
X break;
X
X if (es_send(inputb) < 0)
X fail(2);
X }
X
X /*
X * Set line characteristics back to normal and success
X * indication
X */
X
X (void)ioctl(ttyfd, TIOCSETAW, &tiottysv);
X close(ttyfd);
X fclose(esfp);
X
X if (use_syslog)
X syslog(LOG_INFO, "caller script succeeded on %s", usetty);
X
X exit(0);
X}
X
X
Xusage()
X{
X (void)fprintf(stderr,"\
Xusage: %s [-dSH] [-T expect-tmout] [-F failwait] [-G gagchars]\n\
X [-t ttyname] script\n",
X progname);
X}
X
X
Xlog_perror(msg)
Xchar *msg;
X{
X if (use_syslog)
X syslog(LOG_ERR, "%s: %m", msg);
X else
X perror(msg);
X}
X
X
Xlog_msg(msg)
Xchar *msg;
X{
X if (use_syslog)
X syslog(LOG_NOTICE, msg);
X else
X (void)fprintf(stderr, "%s: %s\n", progname, msg);
X}
X
X
Xfail(estatus)
Xint estatus;
X{
X if (tt_setup_done) {
X if (do_sendhup) {
X tiostty.c_ispeed = B0;
X tiostty.c_ospeed = B0;
X (void)ioctl(ttyfd, TIOCSETAF, &tiostty);
X sleep(1);
X }
X
X (void)ioctl(ttyfd, TIOCSETAW, &tiottysv);
X }
X
X if (failtime > 0)
X sleep(failtime);
X
X if (use_syslog)
X syslog(LOG_INFO, "caller script failed on %s", usetty);
X
X exit(estatus);
X}
X
X
Xint es_expect(chats)
Xchar *chats;
X{
X char iobuffer[IOSIZE], transbuf[255], *isp, *osp;
X int iobufcnt, timeoutcnt, totalchr, n_seq, c_seq, bcc;
X char *seqs[NUM_EXPECTS], *matchp[NUM_EXPECTS],
X *compp;
X if (debug_on)
X (void)fprintf(stderr, "Expect: [%s]\n", chats);
X
X n_seq = 0;
X
X /*
X * Convert the escape codes in the chat string
X */
X
X isp = chats;
X osp = transbuf;
X
X *osp = '\0';
X while (*isp) {
X if (*isp == '\n') {
X isp++;
X continue;
X }
X if (*isp == '\\') {
X isp++;
X if (*isp == '\0') continue;
X switch (*isp) {
X case 'r': /* Carriage return */
X *osp++ = '\015';
X break;
X
X case 'n': /* Newline */
X *osp++ = '\015';
X *osp++ = '\012';
X break;
X
X case '\\': /* Backslash */
X *osp++ = '\\';
X break;
X
X case 'b': /* Blank */
X *osp++ = ' ';
X break;
X
X case 'X': /* Nothing */
X break;
X
X case 'F': /* End string, more (fail) sequences */
X *osp = '\0';
X seqs[n_seq] = strdup(transbuf);
X matchp[n_seq] = seqs[n_seq];
X if (++n_seq >= NUM_EXPECTS) {
X log_msg("too many multiple expects");
X fail(2);
X }
X osp = transbuf;
X break;
X
X default: /* Ignore unknown/inappropriate ones */
X break;
X }
X } else
X *osp++ = *isp;
X
X *osp = '\0';
X ++isp;
X }
X
X /* Finish the buffer being built */
X
X seqs[n_seq] = strdup(transbuf);
X matchp[n_seq] = seqs[n_seq];
X if (++n_seq >= NUM_EXPECTS) {
X log_msg("too many multiple expects");
X fail(2);
X }
X
X /*
X * Get input characters from the remote side and match against
X * the match string
X */
X
X timeoutcnt = 0;
X totalchr = 0;
X
X while (1) {
X for (c_seq=0; c_seq < n_seq; c_seq++)
X if (*matchp[c_seq] == '\0')
X goto gotit;
X
X iobufcnt = read(ttyfd, iobuffer, IOSIZE);
X if (iobufcnt < 0) {
X log_msg("expect input - read failure");
X return(-1);
X }
X
X if (iobufcnt == 0) {
X if (debug_on)
X (void)fprintf(stderr, "<timeout>\n");
X timeoutcnt++;
X if (timeoutcnt > 30) {
X log_msg("expect input - POSIX input timeout");
X return(-1);
X } else
X continue;
X }
X
X totalchr += iobufcnt;
X if (gagchars != 0 && totalchr > gagchars) {
X log_msg("accept - too many misc characters accepted");
X return(-1);
X }
X
X for (c_seq=0; c_seq < n_seq; c_seq++) {
X compp = iobuffer;
X bcc = iobufcnt;
X while (bcc) {
X if (debug_on && c_seq == 0)
X (void)write(2, compp, 1);
X if (*matchp[c_seq] == *compp) {
X matchp[c_seq]++;
X if (*matchp[c_seq] == '\0')
X goto gotit;
X } else {
X matchp[c_seq] = seqs[c_seq];
X if (*matchp[c_seq] == *compp) {
X matchp[c_seq]++;
X if (*matchp[c_seq] == '\0')
X goto gotit;
X }
X }
X --bcc;
X ++compp;
X }
X }
X }
X
X /*NOTREACHED*/
X
Xgotit:
X while (--n_seq >= 0)
X free(seqs[n_seq]);
X
X if (c_seq != 0) {
X log_msg("got expect fail - aborting");
X return(-1);
X } else {
X if (debug_on)
X (void)fprintf(stderr, "\ngot match\n");
X return(0);
X }
X
X /*NOTREACHED*/
X}
X
X
Xint es_send(chats)
Xchar *chats;
X{
X register char *chatp;
X char buf[5];
X int nosendcr;
X
X if (debug_on)
X fprintf(stderr, "Send: [%s]\n", chats);
X
X chatp = chats;
X nosendcr = 0;
X
X while (*chatp) {
X if (*chatp == '\n') {
X chatp++;
X continue;
X }
X if (*chatp == '\\') {
X chatp++;
X if (*chatp == '\0') continue;
X switch (*chatp) {
X case 'r': /* Carriage return */
X buf[0] = '\015';
X if (write(ttyfd, buf, 1) != 1) goto badwr;
X break;
X
X case 'n': /* Newline */
X buf[0] = '\015';
X buf[1] = '\012';
X if (write(ttyfd, buf, 2) != 2) goto badwr;
X break;
X
X case '\\': /* Backslash */
X buf[0] = '\\';
X if (write(ttyfd, buf, 1) != 1) goto badwr;
X break;
X
X case 'd': /* Delay */
X sleep(2);
X break;
X
X case 'p': /* Pause */
X sleep(1);
X break;
X
X case 'b': /* Blank */
X buf[0] = ' ';
X if (write(ttyfd, buf, 1) != 1) goto badwr;
X break;
X
X case 'c': /* Don't send return after string */
X nosendcr = 1;
X break;
X
X default: /* Ignore unknown/inappropriate ones */
X break;
X }
X } else {
X if (write(ttyfd, chatp, 1) != 1) goto badwr;
X }
X chatp++;
X }
X
X if (!nosendcr) {
X buf[0] = '\015';
X if (write(ttyfd, buf, 1) != 1) goto badwr;
X }
X
X return(0);
X
Xbadwr:
X log_msg("send - write failed");
X return(1);
X}
X
X
Xvoid expect_timer()
X{
X log_msg("input - expect timer expired - sequence failed");
X
X fail(2);
X}
END-of-expsend.c
echo x - expsend.1
sed 's/^X//' >expsend.1 << 'END-of-expsend.1'
X.\" Copyright (C) 1993 Gilbert C. Kloepfer, Jr. All Rights Reserved
X.\"
X.\" This manual page is part of the expsend utility program.
X.\"
X.\" This program is free software; you can redistribute it and/or modify
X.\" it under the terms of the GNU General Public License as published by
X.\" the Free Software Foundation; either version 2 of the License, or
X.\" (at your option) any later version.
X.\"
X.\" This program is distributed in the hope that it will be useful,
X.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
X.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
X.\" GNU General Public License for more details.
X.\"
X.\" You should have received a copy of the GNU General Public License
X.\" along with this program; see the file COPYING. If not, write to
X.\" the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
X.\"
X.\" You may contact the author by:
X.\" E-mail: gil@limbic.ssdl.com
X.\" US-mail: Gilbert C. Kloepfer, Jr.
X.\" 2427 Manorwood Dr.
X.\" Sugar Land, TX 77478
X.\" USA
X.TH expsend 1L "December 11, 1993" "Rev 1.0" "Local Communication Utilities"
X.SH NAME
X\fBexpsend\fR - a simple, standalone expect-send program
Xfor automating the logon sequence to another system
X.SH SYNOPSIS
X\fBexpsend\fR [\fB-dSH\fR] [\fB-T\fR expect-tmout] [\fB-F\fR failwait]
X[\fB-G\fR gagchars] [\fB-t\fR ttyname] script-file
X.SH DESCRIPTION
X\fBExpsend\fR is a standalone program used to implement
Xa simple expect-send sequence useful for automating the
Xdial-up and connection to another system via a modem
Xor similar communications medium. The language implemented
Xis similar in function to that used in UUCP (qv.). The
Xterminal parameters are set so that using \fBexpsend\fR
Xwith a modem is natural.
X.PP
XUnlike UUCP, or its offshoots, \fBexpsend\fR reads its
Xsequence of expect-send events from a \fBscript\fR file,
Xwith the expect and send strings separated by a newline
Xrather than whitespace.
X.SH OPTIONS
X.IP -d
XDisplay detailed actions of the program on standard error
X(\fBd\fRebug mode).
X.IP -S
XUse \fBsyslog(3)\fR calls to log failure or progress of
Xthe program, rather than displaying these messages on
X\fBstderr\fR.
X.IP -H
XInitiate hangup (\fBstty 0\fR) if script sequence fails.
X.IP "-T #"
XBy default, if the expect sequence does not complete
Xin 90 seconds, the entire script will fail by default.
XThis option sets this the timeout to something other
Xthan 90 seconds, or 0 to disable this function.
X.IP "-F #"
XWait a number of seconds if the script fails.
XIt is sometimes desirable to wait some short amount
Xof time if \fBexpsend\fR will be used in conjunction
Xwith a program which initiates a continuous redial
Xuntil the sequence succeeds. This would prevent the
Xredial sequence from happening too rapidly.
X.IP "-G #"
XWhen using \fBexpsend\fR over a possibly noisy
Xcommunications medium, it is possible that there
Xis too much chatter to make the connection worthwhile.
XThis option specifies the number of characters that
Xare not part of the expect sequence to read before
Xassuming that the sequence should fail completely.
X.IP "-t tty"
XSpecify the tty device to perform the action on.
XBy default, the device attached to \fBstdin\fR is
Xused.
X.SH "SCRIPT FILE"
XThe \fBscript file\fR contains a series of lines in
Xthe order expect - send - expect - send [...] that
Xform a means of expecting a series of questions and
Xanswering those questions automatically. Unlike
XUUCP, however, each of these directives are on
Xan individual line, separated by a newline.
X.PP
XA backslash character (\e) is treated specially
Xin the script file in that it escapes one or
Xmore special characters or options. These
Xescape-functions are:
X.IP \er
XIndicates a carriage-return (ASCII 13)
X.IP \en
XIndicates a newline sequence (ASCII 13 and ASCII 10)
X.IP \e\e
XIndicates a backslash character
X.IP \ed
XPause approximately 2 seconds before continuing (send-only)
X.IP \ep
XPause approximately 1 second or less before continuing (send-only)
X.IP \eb
XIndicates a blank space. This isn't necessarily needed
Xas the language uses a newline as a delimiter for the expect
Xand send strings, but it sometimes helps to indicate the
Xspace this way.
X.IP \eX
XNothing (null string). This is useful in expect sequences
Xto say "expect nothing." (expect-only)
X.IP \ec
XDo not send a carriage return at the end of this send
Xsequence (send-only)
X.IP \eF
XRemainder of expect sequence contains one or more "failure"
Xstrings. When the string(s) indiciated after the \\F are
Xreceived, the expect sequence immediately fails and
X\fBexpsend\fR will terminate the entire expect-send
Xscript. This functionality can be used to terminate
Xthe program faster when a busy signal or no carrier is
Xdetected by an intelligent modem. (expect-only)
X.SH EXAMPLE
XWe would like to wait until the word \fBtesting\fR
Xis entered, to which we will reply \fBone two three\fR.
XIf, while waiting for \fBtesting\fR, we receive the
Xword \fBfoobar\fR, we will immediately terminate the
Xsession with a FAILED status.
X.PP
XIf the first sequence succeeds, we will then wait for
Xthe word \fBleave\fR to be entered, to which we will
Xreply \fBme alone\fR. This string will fail if either
X\fBstay\fR or \fBthere\fR are entered.
X.PP
XThe script to effect this scenario would be:
X.nf
X.RS
X
X testing\eFfoobar
X one two three
X leave\eFstay\eFthere
X me alone
X
X.RE
X.fi
X.SH BUGS
XThe I/O system is not flexible and is really set-up
Xonly to talk to modems.
X.PP
XPOSIX-style termios are used, but this program was
Xwritten to assume the anomolies present in FreeBSD
Xtermios.
X.PP
XSome of the escaped characters are not needed.
X.PP
XIt is assumed that the terminal being connected to
Xhas its speed and all vital parameters set to sane
Xand correct values before \fBexpsend\fR is run.
X.SH AUTHOR
X.nf
XGil Kloepfer, Jr.
Xgil@limbic.ssdl.com
X.fi
X.SH ACKNOWLEDGEMENTS
XThanks to Lenny Tropiano (lenny@icus.com) for his recommendations
Xfor making this work on the IBM RT and for doing some testing of it.
XSpecial thanks to all those responsible for making BSD available
Xon the 80x86 platform, without which this software would not be
Xnecessary.
END-of-expsend.1
echo c - example
mkdir example > /dev/null 2>&1
echo x - example/slip.expsend
sed 's/^X//' >example/slip.expsend << 'END-of-example/slip.expsend'
X\X
X\pATZ
XOK
X\pATQ0V1M1&N17
XOK
X\pATDT5551212
XCONNECT\FBUSY\FNO\bCARRIER\FNO\bDIALTONE
X\p\r
Xogin:
X\pmylogin
Xword:
X\pmypassword
X\X
X\d
END-of-example/slip.expsend
echo x - example/slip.slconfig
sed 's/^X//' >example/slip.slconfig << 'END-of-example/slip.slconfig'
XPATH="/bin:/usr/bin:/usr/sbin:/sbin"
X# If the 2 args are not equal, the unit numbers are changing, else
X# this is the first config
X
Xif [ "$1" != "$2" ] ; then
X route delete -net default hismach
X ifconfig sl$1 down
X ifconfig sl$1 delete
Xfi
X
X#
X# Config the new SLIP unit
X
Xifconfig sl$2 inet mymach hismach netmask 255.255.255.0 up
Xroute add -net default hismach 1
END-of-example/slip.slconfig
echo x - example/slip.slexit
sed 's/^X//' >example/slip.slexit << 'END-of-example/slip.slexit'
Xstty 0 <$1
END-of-example/slip.slexit
echo x - example/slipdial.sh
sed 's/^X//' >example/slipdial.sh << 'END-of-example/slipdial.sh'
XTTY="/dev/cua02"
X
Xstty -clocal <$TTY
Xslattach -h -s 38400 -u '/root/slip.slconfig' \
X -e '/root/slip.slexit' \
X -z -r "/usr/local/bin/expsend -SH -G 2048 -F 10 -t $TTY /root/slip.expsend" \
X $TTY
END-of-example/slipdial.sh
exit
-- Cut Here -- -- Cut Here -- -- Cut Here -- -- Cut Here -- -- Cut Here --
--
Gil Kloepfer, Jr. Home: gil@limbic.ssdl.com / ...!moxie!limbic!gil