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Enciclopedia Del Perro
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Enciclopedia Del Perro.iso
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info31
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medium2.sc_
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medium2.sc
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1995-03-05
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<******************************************************* language=slang
Sample SLANG Modem Dialup Script
Description:
Medium Example #2 -- Written in the SLANG scripting language
In this script (basically the same as Medium Example #1) we
are using the "define" built-in function to consolodate the
phone number and all the modem commands. Since they are in
one place, at the top of the script, we can find and change
them easily, instead of hunting through-out the script. This
is useful if a different phone number is to be used, or if
you switch to a modem of a different type.
This script dials the modem. It then checks "polls" the
serial line to see if the modem has connected with the remote
modem.
If the connection has been made the script enters a user-id
after a short delay, then a password after another short
delay and, finally, packet mode is enabled so enable TCP/IP
data transfers. The last thing the script does is run two
DOS applications: PCMAIL and VMAIL. VMAIL is left running
after the script is done.
If no connetion is made the script informs the user and ends.
This script does not store a user id or password directly,
but uses the ones that were entered in WDial's Configuration
Window.
To Use This Script:
Change "0000" to the phone number of the remote machine you
would like to connect to.
Be sure the enter your password and user id in WDial's
Configuration Window.
Adjust the intervals in the (pause,...) functions to suit
your needs. These are in milliseconds (5000 milliseconds ==
5 seconds).
This script assumes that your modem, and the remote host,
terminate commands with an ASCII Carrage-Return character.
If, instead, a Carrage-Return/Line-Feed (CRLF) is required,
change "(cr)" to "(cr)(lf)" everywhere in the script it is
necessary.
Notes:
This is a very simple dial script. It assumes that, once the
modem connection has been made the following will be true:
o the remote machine will always be ready for your
user-id after a set interval
o like-wise for your password
It is more robust than simpler examples in that it checks to
see if the modem connected or not, and acts accordingly.
There is no provision for retries, or verification of the
remote host, all of which are possible in SLANG. The script
also assumes that there will be a user id and password prompt
after set intervals.
Note that the send function calls in the "hang-up" do not
have curly braces around the modem commands. Curly braces
are no necessary in this case because the modem commands are
one word (not containing spaces, tabs, newlines or commas).
Here is what you see:
(send, ATH (cr) )
What is sent consists of the letters 'A', 'T', 'H', and the
ASCII Carrage-return character.
Built-In SLANG Functions Used:
define Define a function.
send Send a character string to the modem.
poll Wait for the serial line to change state.
pause Wait a specified number of milliseconds.
username Return username from WDial's Configuration Window.
password Return password from WDial's Configuration Window.
shell Run a program, wait until program is done running.
start Run a program, don't wait for it to complete.
changemode Changes mode of connection from "raw" to
"packet" or vice-versa.
************************************************************************>
(define, PHONE# , 0000 ) <* Phone number to dial *>
(define, DIAL , ATDT ) <* Modem dial command *>
(define, HANGUP , ATH ) <* Modem hang up command *>
(define, RESET , ATZ ) <* Modem initialization command *>
(define, ATTN , +++ ) <* Modem attention command *>
(define, dial-up, { <* START OF "dial-up" FUNCTION *>
(send, <* Dial the remote modem/host *>
(value, DIAL) <* Modem command *>
(value, PHONE#) <* Phone number *>
(cr) <* Carrage-Return after modem cmd *>
) <* End of "send" function *>
}) <* END OF "dial-up" FUNCTION *>
(define, log-in, { <* START OF "log-in" FUNCTION *>
(poll, physical, open, 30000, <* Wait for the modem to connect *>
{ <* IF THE MODEM CONNECTED SUCESSFULLY *>
(pause, 3000) <* Wait for remote machine's prompt *>
<* Log-in to the remote modem/host *>
(send, (username) ) <* Send your user id *>
(send, (cr) ) <* Carrage-Return after user id *>
(pause, 5000) <* Wait for a password prompt *>
<* Send the password *>
(send, (password) ) <* Send password *>
(send, (cr) ) <* Carrage-Return after password *>
(pause, 5000) <* Pause for a moment *>
(changemode, packet) <* Change to "packet" mode *>
} <* END IF THE MODEM CONNECTED *>
, <* Comma delimits "Else" part of poll *>
{ <* ELSE IF THE MODEM DOSN'T CONNECT *>
(output, {
The Modem didn't connect. End of Script.
} <* everything between { } displayed *>
) <* End of the "output" function *>
(hang-up) <* Reset the modem *>
(exit) <* Exit the script *>
} <* END IF THE MODEM DOESN'T CONNECT *>
) <* End of the "poll" function *>
}) <* END OF "log-in" FUNCTION *>
(define, run-my-programs, { <* START OF "run-my-programs" FUNCTION *>
(shell,pcmail) <* Run mailer *>
(start,vmail) <* Run mail reader *>
}) <* END OF "run-my-programs" FUNCTION *>
(define, hang-up, { <* START OF "hang-up" FUNCTION *>
(changemode, raw) <* Change back to "raw" mode *>
(send, (value, ATTN) ) <* Get modem's attention *>
(pause, 3000 ) <* Wait 3 seconds for modem response *>
(send, (value, HANGUP)(cr)) <* Send "hang up" command to modem *>
(pause, 1000 ) <* Give modem 1 second to do it *>
(send, (value, RESET) (cr)) <* "Zero" modem *>
}) <* END OF "hang-up" FUNCTION *>
<************************* RUN THE SCRIPT *****************************>
( dial-up ) <* DIAL THE REMOTE MODEM *>
( log-in ) <* LOG IN, STOP SCRIPT HERE IF FAILURE *>
( run-my-programs ) <* RUN PROGRAMS WHILE LOGGED IN *>
( hang-up ) <* HANG UP AND RESET THE MODEM *>