Restricted User Shell
In this subsection we will show how to set up a mail notification for
Rush rules. Let’s suppose we wish to receive emails for each upload
scp-to rule (see scp). To do so, we add the following
fall through rule to the beginning of rush.rc:
rule default post-socket "inet://localhost" fall-trough
This will enable notifications for each rule located below this one.
Missing port in
post-socket statement means
be using the default ‘tcpmux’ port.
To receive and process these requests, you will need an
inetd capable to handle TCPMUX. We recommend the
one from GNU Inetutils package
(GNU Inetutils). In
/etc/inetd.conf file, we add:
# Enable TCPMUX handling. tcpmux stream tcp nowait root internal # Handle ‘scp-to’ service. tcpmux/+scp-to stream tcp nowait root \ /usr/sbin/tcpd /bin/rushmail
/bin/rushmail does the actual notification.
Following is its simplest implementation:
#! /bin/sh read user command /usr/sbin/sendmail -oi -t <<EOT From: GNU Rush Notification <devnull@localhost> To: <root@localhost> Subject: GNU Rush notification Be informed that $user executed $command. EOT
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