resource_name :firewall_rule
provides :firewall_rule
+unified_mode true
+
default_action :nothing
property :rule, :kind_of => String, :name_property => true
property :source, :kind_of => String, :required => true
property :dest, :kind_of => String, :required => true
property :proto, :kind_of => String, :required => true
-property :dest_ports, :kind_of => [String, Integer], :default => "-"
-property :source_ports, :kind_of => [String, Integer], :default => "-"
-property :rate_limit, :kind_of => String, :default => "-"
-property :connection_limit, :kind_of => [String, Integer], :default => "-"
-property :helper, :kind_of => String, :default => "-"
+property :dest_ports, :kind_of => [String, Integer, Array]
+property :source_ports, :kind_of => [String, Integer, Array]
+property :rate_limit, :kind_of => String
+property :connection_limit, :kind_of => [String, Integer]
+property :helper, :kind_of => String
+
+property :compile_time, TrueClass, :default => true
action :accept do
add_rule :accept
action_class do
def add_rule(action)
- rule = {
- :action => action.to_s.upcase,
- :source => new_resource.source,
- :dest => new_resource.dest,
- :proto => new_resource.proto,
- :dest_ports => new_resource.dest_ports.to_s,
- :source_ports => new_resource.source_ports.to_s,
- :rate_limit => new_resource.rate_limit,
- :connection_limit => new_resource.connection_limit.to_s,
- :helper => new_resource.helper
- }
-
if new_resource.family.nil?
- node.default[:networking][:firewall][:inet] << rule
- node.default[:networking][:firewall][:inet6] << rule
+ add_nftables_rule(action, "inet")
+ add_nftables_rule(action, "inet6")
elsif new_resource.family.to_s == "inet"
- node.default[:networking][:firewall][:inet] << rule
+ add_nftables_rule(action, "inet")
elsif new_resource.family.to_s == "inet6"
- node.default[:networking][:firewall][:inet6] << rule
- else
- log "Unsupported network family" do
- level :error
- end
+ add_nftables_rule(action, "inet6")
+ end
+ end
+
+ def add_nftables_rule(action, family)
+ rule = []
+
+ ip = case family
+ when "inet" then "ip"
+ when "inet6" then "ip6"
+ end
+
+ proto = new_resource.proto
+
+ if new_resource.source_ports
+ rule << "#{proto} sport { #{nftables_source_ports} }"
end
+
+ if new_resource.dest_ports
+ rule << "#{proto} dport { #{nftables_dest_ports} }"
+ end
+
+ if new_resource.source == "osm"
+ rule << "#{ip} saddr @#{ip}-osm-addresses"
+ elsif new_resource.source =~ /^net:(.*)$/
+ addresses = Regexp.last_match(1).split(",").join(", ")
+
+ rule << "#{ip} saddr { #{addresses} }"
+ end
+
+ if new_resource.dest == "osm"
+ rule << "#{ip} daddr @#{ip}-osm-addresses"
+ elsif new_resource.dest =~ /^net:(.*)$/
+ addresses = Regexp.last_match(1).split(",").join(", ")
+
+ rule << "#{ip} daddr { #{addresses} }"
+ end
+
+ rule << "ct state new" if new_resource.proto == "tcp"
+
+ if new_resource.connection_limit
+ set = "connlimit-#{new_resource.rule}-#{ip}"
+
+ node.default[:networking][:firewall][:sets] << set
+
+ rule << "add @#{set} { #{ip} saddr ct count #{new_resource.connection_limit} }"
+ end
+
+ if new_resource.rate_limit =~ %r{^s:(\d+)/sec:(\d+)$}
+ set = "ratelimit-#{new_resource.rule}-#{ip}"
+ rate = Regexp.last_match(1)
+ burst = Regexp.last_match(2)
+
+ node.default[:networking][:firewall][:sets] << set
+
+ rule << "update @#{set} { #{ip} saddr limit rate #{rate}/second burst #{burst} packets }"
+ end
+
+ if new_resource.helper
+ helper = "#{new_resource.rule}-#{new_resource.helper}"
+
+ node.default[:networking][:firewall][:helpers] << {
+ :name => helper, :helper => new_resource.helper, :protocol => proto
+ }
+
+ rule << "ct helper set #{helper}"
+ end
+
+ rule << case action
+ when :accept then "accept"
+ when :drop then "jump log-and-drop"
+ when :reject then "jump log-and-reject"
+ end
+
+ if new_resource.source == "fw"
+ node.default[:networking][:firewall][:outgoing] << rule.join(" ")
+ elsif new_resource.dest == "fw"
+ node.default[:networking][:firewall][:incoming] << rule.join(" ")
+ end
+ end
+
+ def nftables_source_ports
+ Array(new_resource.source_ports).map(&:to_s).join(",")
+ end
+
+ def nftables_dest_ports
+ Array(new_resource.dest_ports).map(&:to_s).join(",")
end
end