[Fedora-livecd-list] Support for custom configuration using python templates

[Mark McLoughlin]

On Wed, 2007-05-16 at 17:56 +0100, Mark McLoughlin wrote:

>   - The main reason, though, is that I wanted the derived iptables 
>     config to just add some rules rather than completely override the 
>     entire config. Can we do something similar with templating?

	Here's a quick prototype of using templating. Hmm.

Cheers,
Mark.
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class iptables {
    $start = "*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]

# disable all forwarding
-A FORWARD -j REJECT --reject-with icmp-host-prohibited

# trust loopback device
-A INPUT -i lo -j ACCEPT

# allow ICMP
-A INPUT -p icmp --icmp-type any -j ACCEPT

# allow IPSec
-A INPUT -p 50 -j ACCEPT
-A INPUT -p 51 -j ACCEPT

# allow mDNS
-A INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT

# allow CUPS browsing
-A INPUT -p udp -m udp --dport 631 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 631 -j ACCEPT

# allow packets for established connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
"
   $end = "
-A INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
"
    file { "iptables" :
        path => "/tmp/iptables",
        content => "$start\n$end\n"
    }
}

class myiptables inherits iptables {
    $ports = [ "22", "80" ]
    $lines = template("/root/puppet/addport.erb")

    File["iptables"] { content => "$start\n$lines\n$end\n" }
}

include myiptables
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<% ports.each do |port| -%>-A INPUT -m state --state NEW -m tcp -p tcp --dport <%= port %> -j ACCEPT
<% end -%>