source: server/inst/cups-set-perms

#!/bin/sh

# Set the CUPS permissions such that anyone can add/remove jobs
# from the queue for gutenbach.

if [ -e /usr/lib/gutenbach/config/printername ]; then
    printername="$(cat /usr/lib/gutenbach/config/printername)"

    conffile="/etc/cups/cupsd.conf"
    mv "$conffile" "$conffile.gutenbach-orig"
    touch "$conffile"

    cat >> "$conffile" <<EOF
#
# This cupsd.conf was generated by the Gutenbach music spooler
#

# Log general information in error_log - change "info" to "debug" for
# troubleshooting...
LogLevel warning

# Administrator user group...
SystemGroup lpadmin
Group audio

Listen /var/run/cups/cups.sock
Listen *

ServerAlias *

# Default authentication type, when authentication is required...
DefaultAuthType Basic

# Restrict access to the server...
<Location />
Allow from All
Order deny,allow
</Location>

# Restrict access to the admin pages...
<Location /admin>
Encryption Required
Order deny,allow
</Location>

# Restrict access to configuration files...
<Location /admin/conf>
AuthType Default
Require user @SYSTEM
Order deny,allow
</Location>

# Set the default printer/job policies...
<Policy default>
# Job-related operations must be done by the owner or an administrator...
<Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job Set-Job-Attributes Create-Job-Subscription Renew-Subscription Cancel-Subscription Get-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job Resume-Job CUPS-Move-Job>
Allow from All
Order deny,allow
</Limit>

# All administration operations require an administrator to authenticate...
<Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer CUPS-Add-Modify-Class CUPS-Delete-Class CUPS-Set-Default>
AuthType Default
Require user @SYSTEM
Order deny,allow
</Limit>

# All printer operations require a printer operator to authenticate...
<Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer Pause-Printer-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs Deactivate-Printer Activate-Printer Restart-Printer Shutdown-Printer Startup-Printer Promote-Job Schedule-Job-After CUPS-Accept-Jobs CUPS-Reject-Jobs>
AuthType Default
Require user @SYSTEM
Order deny,allow
</Limit>

<Limit All>
Order deny,allow
</Limit>
</Policy>

<Location /printers/$printername>
    <Limit Cancel-Job Purge-Jobs CUPS-Authenticate-Job>
        Order deny,allow
        Allow from All
    </Limit>

    Order deny,allow
    Allow from All
</Location>
EOF

    /etc/init.d/cups reload

else
    echo "Error: /usr/lib/gutenbach/config/printername does not exist"
    exit 1
fi