pipe text from port 2222 to script using xinetd

[geebers]

i have xinetd setup to run myscript.sh whenever some text is sent to port 2222.
but i'm needing to pipe the text into myscript.sh

example:
- client sends string "11111" to server port 2222
- myscript.sh is executed with "11111" as the first argument.

can this be done?
thanks for any help.

 

[Annihilannic]

What you are describing is not "piping" the text to myscript.sh, but passing it as a parameter.

In fact, xinetd's default behaviour is to "pipe" the input to the script it calls through standard input. This is a better way anyway, because the input isn't limited to a single line or a limited number of characters.

You can access the standard input using a loop such as:

while read INPUT
do
    echo "received data was: $INPUT"
    # or if you wish to call a script with the input as a parameter:
    /path/to/some/other/script.sh "$INPUT"
done

Annihilannic.

 

[geebers]

I tried your suggestion, did not seem to work.

if myscript.sh contains this....
#!/bin/sh
echo "test" >newfile.txt

and I run...
sudo nc -u 192.168.1.100 2222
"type some text and hit enter"

then it works. a new file called "newfile.txt" is created which contains the string "text".

However, this does not work....
#!/bin/sh
while read INPUT; do
echo "$INPUT" >newfile.txt
done

no file is created.

any clues? Here's the contents of my /etc/xinetd.d/myscript

service myscript
{
port = 2222
socket_type = dgram
protocol = udp
wait = yes
user = fred
server = /home/fred/myscript.sh
log_on_success += USERID
log_on_failure += USERID
disable = no
}

thanks for any help.