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B096-016 B096-048 and B092-016 User Manual Page 172
When an alert occurs on a port, the portmanager will attempt to execute
/etc/config/scripts/portXX.alert (where XX is the port number, e.g. 08)
The script is run with STDIN containing the data which triggered the alert, and STDOUT
redirected to /dev/null, NOT to the serial port. If you wish to communicate with the port,
use pmshell or pmchat from within the script.
If the script cannot be executed, then the alert will be mailed to the address configured in
the system administration section.
III. When a user connects to any port:
If a file called /etc/config/pmshell-start.sh exists, it is run when a user connects to a port. It
is provided with 2 arguments, the "Port number" and the "Username". Here is a simple
example:
</etc/config/pmshell-start.sh >
#!/bin/sh
PORT="$1"
USER="$2"
echo "Welcome to port $PORT $USER"
< /etc/config/pmshell-start.sh>
The return value from the script controls whether the user is accepted or not. If 0 is
returned (or nothing is done on exit as in the above script), then the user is permitted,
otherwise, the user is denied access.
Here is a more complex script which reads from configuration to display the port label if
available and denies access to the root user:
</etc/config/pmshell-start.sh>
#!/bin/sh
PORT="$1"
USER="$2"
LABEL=$(config -g config.ports.port$PORT.label | cut -f2- -d' ')
if [ "$USER" == "root" ]; then
echo "Permission denied for Super User"
exit 1