# limitations under the License.
#
+require "ipaddr"
+
resource_name :firewall_rule
provides :firewall_rule
default_action :nothing
property :rule, :kind_of => String, :name_property => true
-property :family, :kind_of => [String, Symbol]
-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 :context, :kind_of => Symbol, :required => true, :is => [:incoming, :outgoing]
+property :protocol, :kind_of => Symbol, :required => true, :is => [:udp, :tcp]
+property :source, :kind_of => [String, Symbol, Array]
+property :dest, :kind_of => [String, Symbol, Array]
+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
+ add_rule(:accept, "ip")
+ add_rule(:accept, "ip6")
end
action :drop do
- add_rule :drop
+ add_rule(:drop, "ip")
+ add_rule(:drop, "ip6")
end
action :reject do
- add_rule :reject
+ add_rule(:reject, "ip")
+ add_rule(:reject, "ip6")
end
action_class do
- def add_rule(action)
- if node[:networking][:firewall][:engine] == "shorewall"
- add_shorewall_rule(action)
- elsif node[:networking][:firewall][:engine] == "nftables"
- if new_resource.family.nil?
- add_nftables_rule(action, "inet")
- add_nftables_rule(action, "inet6")
- elsif new_resource.family.to_s == "inet"
- add_nftables_rule(action, "inet")
- elsif new_resource.family.to_s == "inet6"
- add_nftables_rule(action, "inet6")
- end
- end
- end
-
- def add_shorewall_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
- elsif new_resource.family.to_s == "inet"
- node.default[:networking][:firewall][:inet] << rule
- elsif new_resource.family.to_s == "inet6"
- node.default[:networking][:firewall][:inet6] << rule
- else
- log "Unsupported network family" do
- level :error
- end
- end
- end
-
- def add_nftables_rule(action, family)
+ def add_rule(action, ip)
rule = []
- ip = case family
- when "inet" then "ip"
- when "inet6" then "ip6"
- end
+ protocol = new_resource.protocol.to_s
- proto = case new_resource.proto
- when "udp" then "udp"
- when "tcp", "tcp:syn" then "tcp"
- end
+ source = addresses(new_resource.source, ip)
+ dest = addresses(new_resource.dest, ip)
- if new_resource.source_ports != "-"
- rule << "#{proto} sport { #{nftables_source_ports} }"
- end
+ return if new_resource.source && source.empty?
+ return if new_resource.dest && dest.empty?
- if new_resource.dest_ports != "-"
- rule << "#{proto} dport { #{nftables_dest_ports} }"
- end
+ rule << "#{protocol} sport #{format_ports(new_resource.source_ports)}" if new_resource.source_ports
+ rule << "#{protocol} dport #{format_ports(new_resource.dest_ports)}" if new_resource.dest_ports
+ rule << "#{ip} saddr #{format_addresses(source, ip)}" if new_resource.source
+ rule << "#{ip} daddr #{format_addresses(dest, ip)}" if new_resource.dest
+ rule << "ct state new" if new_resource.protocol == :tcp
- if new_resource.source == "osm"
- rule << "#{ip} saddr { $#{ip}-osm-addresses }"
- elsif new_resource.source =~ /^net:(.*)$/
- addresses = Regexp.last_match(1).split(",").join(", ")
+ if new_resource.connection_limit
+ set = "connlimit-#{new_resource.rule}-#{ip}"
- 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
+ node.default[:networking][:firewall][:sets] << {
+ :name => set, :type => set_type(ip), :flags => %w[dynamic]
+ }
- if new_resource.proto == "tcp:syn"
- rule << "ct state new"
- end
-
- if new_resource.connection_limit != "-"
- rule << "ct count #{new_resource.connection_limit}"
+ rule << "add @#{set} { #{ip} saddr ct count #{new_resource.connection_limit} }"
end
if new_resource.rate_limit =~ %r{^s:(\d+)/sec:(\d+)$}
- set = "#{new_resource.rule}-#{ip}"
+ set = "ratelimit-#{new_resource.rule}-#{ip}"
rate = Regexp.last_match(1)
burst = Regexp.last_match(2)
- node.default[:networking][:firewall][:sets] << set
+ node.default[:networking][:firewall][:sets] << {
+ :name => set, :type => set_type(ip), :flags => %w[dynamic], :timeout => 120
+ }
- rule << "add @#{set} { #{ip} saddr limit rate #{rate}/second burst #{burst} packets }"
+ rule << "update @#{set} { #{ip} saddr limit rate #{rate}/second burst #{burst} packets }"
+ end
+
+ if new_resource.helper
+ helper = "#{new_resource.rule}-#{new_resource.helper}"
+
+ node.default[:networking][:firewall][:helpers] << {
+ :name => helper, :helper => new_resource.helper, :protocol => protocol
+ }
+
+ rule << "ct helper set #{helper}"
end
rule << case action
when :reject then "jump log-and-reject"
end
- if new_resource.source == "fw"
- node.default[:networking][:firewall][:outgoing] << rule.join(" ")
- elsif new_resource.dest == "fw"
- node.default[:networking][:firewall][:incoming] << rule.join(" ")
+ node.default[:networking][:firewall][new_resource.context] << rule.join(" ")
+ end
+
+ def addresses(addresses, ip)
+ if addresses.is_a?(Symbol)
+ addresses
+ else
+ Array(addresses).map do |address|
+ if ip == "ip" && IPAddr.new(address.to_s).ipv4?
+ address
+ elsif ip == "ip6" && IPAddr.new(address.to_s).ipv6?
+ address
+ end
+ end.compact
end
end
- def nftables_source_ports
- new_resource.source_ports.to_s.sub(/:$/, "-65535").gsub(":", "-")
+ def format_ports(ports)
+ "{ #{Array(ports).map(&:to_s).join(', ')} }"
end
- def nftables_dest_ports
- new_resource.dest_ports.to_s.sub(/:$/, "-65535").gsub(":", "-")
+ def format_addresses(addresses, ip)
+ if addresses.is_a?(Symbol)
+ "@#{ip}-#{addresses}-addresses"
+ else
+ "{ #{Array(addresses).map(&:to_s).join(', ')} }"
+ end
+ end
+
+ def set_type(ip)
+ case ip
+ when "ip" then "ipv4_addr"
+ when "ip6" then "ipv6_addr"
+ end
end
end
projects / chef.git / blobdiff