44 lines
1.6 KiB
Desktop File
44 lines
1.6 KiB
Desktop File
%def %%get_protocol_port(%%port)
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%if ':' in %%port
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%set %%protocol, %%port = %%port.split(':')
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%else
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%set %%protocol = 'tcp'
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%end if
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%return %%protocol, %%port
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%end def
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[Unit]
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Description=Firewall for Risotto
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After=network.target
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[Service]
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Type=oneshot
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RemainAfterExit=yes
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%set %%has_rules = False
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%set %%incoming_ports = {'tcp': {}, 'udp': {}}
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%for %%dns in %%machined.machines
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%set %%machine = %%normalize_family(%%dns)
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%set %%outgoing = %%machined['machine_' + %%machine]['outgoing_ports_' + %%machine]
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%if %%outgoing
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%set %%ip = %%machined['machine_' + %%machine]['ip_' + %%machine]
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%for %%port in %%outgoing
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%set %%protocol, %%port = %%get_protocol_port(%%port)
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ExecStart=/sbin/iptables -t nat -A POSTROUTING -s %%ip -p %%protocol -m %%protocol --dport %%port -o %%output_interface -j MASQUERADE
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ExecStop=-/sbin/iptables -t nat -D POSTROUTING -s %%ip -p %%protocol -m %%protocol --dport %%port -o %%output_interface -j MASQUERADE
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%set %%has_rules = False
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%end for
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%end if
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%set %%incoming = %%machined['machine_' + %%machine]['incoming_ports_' + %%machine]
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%for %%port in %%incoming
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%set %%protocol, %%port = %%get_protocol_port(%%port)
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%if %%port in %%incoming_ports[%%protocol]
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%raise Exception('the port "' + %%port + '" cannot be deployed for multiple machines: "' + %%dns + '" and "' + %%incoming_ports[%%protocol][%%port] + '"')
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%end if
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%set %%incoming_ports[%%protocol][%%port] = %%dns
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%end for
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%end for
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%if not %%has_rules
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ExecStart=/usr/bin/echo "No rule"
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%end if
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[Install]
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WantedBy=multi-user.target
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