Class: Dcmgr::NodeModules::ServiceNetfilter
- Inherits:
-
Isono::NodeModules::Base
- Object
- Isono::NodeModules::Base
- Dcmgr::NodeModules::ServiceNetfilter
- Includes:
- Helpers::NicHelper, Logger, Bandwidth, Nat
- Defined in:
- lib/dcmgr/node_modules/service_netfilter.rb
Instance Method Summary collapse
- #build_ebtables_basic_part(vif_map, inst_map) ⇒ Object
- #build_ebtables_final_part(vif_map) ⇒ Object
- #build_ebtables_group_part(vif_map, inst_map, viftable_map) ⇒ Object
- #build_iptables_basic_part(vif_map, inst_map) ⇒ Object
- #build_iptables_final_part(vif_map) ⇒ Object
- #build_iptables_group_part(vif_map, inst_map) ⇒ Object
- #build_rule(rules = []) ⇒ Object
- #build_vif_map(inst_map = {}) ⇒ Object
- #do_exec(cmds) ⇒ Object
- #event ⇒ Object
- #init_bandwidth_limit(network_maps) ⇒ Object
- #init_ebtables(inst_maps = [], viftable_map = {}) ⇒ Object
- #init_iptables(inst_maps = []) ⇒ Object
- #init_netfilter ⇒ Object
- #init_static_nat(inst_maps = []) ⇒ Object
- #protocol_map(type) ⇒ Object
-
#refresh_netfilter_by_friend_instance_id(inst_id) ⇒ Object
from event_subscriber.
-
#refresh_netfilter_by_joined_netfilter_group_id(netfilter_group_id) ⇒ Object
from event_subscriber.
- #rpc ⇒ Object
Methods included from Bandwidth
#clear_bandwidth_limits, #limit_bandwidth
Methods included from Logger
create, default_logdev, included
Methods included from Helpers::NicHelper
#find_nic, #nic_state, #valid_nic?
Methods included from Nat
#arp_respond, #is_natted_ip?, #nat_exceptions, #nat_instance
Instance Method Details
#build_ebtables_basic_part(vif_map, inst_map) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 383 def build_ebtables_basic_part(vif_map, inst_map) basic_cmds = [] hva_ipv4 = Isono::Util.default_gw_ipaddr ################################ ## 0. chain name ################################ # support IP protocol protocol_map = protocol_map(:ebtables) # make chain names. chains = [] chains << "s_#{vif_map[:uuid]}" chains << "d_#{vif_map[:uuid]}" chains << "s_#{vif_map[:uuid]}_d_hst" chains << "d_#{vif_map[:uuid]}_s_hst" protocol_map.each { |k,v| chains << "s_#{vif_map[:uuid]}_#{k}" chains << "d_#{vif_map[:uuid]}_#{k}" chains << "s_#{vif_map[:uuid]}_d_hst_#{k}" chains << "d_#{vif_map[:uuid]}_s_hst_#{k}" } ################################ ## 1. basic part ################################ # create user defined chains. [ 'N' ].each { |xcmd| chains.each { |chain| basic_cmds << "ebtables -#{xcmd} #{chain}" } } # jumt to user defined chains basic_cmds << "ebtables -A FORWARD -i #{vif_map[:uuid]} -j s_#{vif_map[:uuid]}" basic_cmds << "ebtables -A FORWARD -o #{vif_map[:uuid]} -j d_#{vif_map[:uuid]}" basic_cmds << "ebtables -A INPUT -i #{vif_map[:uuid]} -j s_#{vif_map[:uuid]}_d_hst" basic_cmds << "ebtables -A OUTPUT -o #{vif_map[:uuid]} -j d_#{vif_map[:uuid]}_s_hst" # IP protocol routing protocol_map.each { |k,v| basic_cmds << "ebtables -A s_#{vif_map[:uuid]} -p #{v} -j s_#{vif_map[:uuid]}_#{k}" basic_cmds << "ebtables -A d_#{vif_map[:uuid]} -p #{v} -j d_#{vif_map[:uuid]}_#{k}" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst -p #{v} -j s_#{vif_map[:uuid]}_d_hst_#{k}" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst -p #{v} -j d_#{vif_map[:uuid]}_s_hst_#{k}" } if @node.manifest.config.packet_drop_log basic_cmds << "ebtables -A s_#{vif_map[:uuid]} --log-level 4 --log-ip --log-arp --log-prefix 'D s_#{vif_map[:uuid]}:' -j CONTINUE" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst --log-level 4 --log-ip --log-arp --log-prefix 'D s_#{vif_map[:uuid]}_d_hst:' -j CONTINUE" end basic_cmds << "ebtables -A s_#{vif_map[:uuid]} -j DROP" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst -j DROP" # anti spoof: mac # guest -> * basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_arp --protocol arp --arp-mac-src ! #{vif_map[:mac]} --log-ip --log-arp --log-prefix 'Dmc s_#{vif_map[:uuid]}_arp:' -j CONTINUE" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-mac-src ! #{vif_map[:mac]} --log-ip --log-arp --log-prefix 'Dmc s_#{vif_map[:uuid]}_d_hst_arp:' -j CONTINUE" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_arp --protocol arp --arp-mac-src ! #{vif_map[:mac]} -j DROP" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-mac-src ! #{vif_map[:mac]} -j DROP" # guest <- * (broadcast) basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-mac-dst 00:00:00:00:00:00 --log-ip --log-arp --log-prefix 'Amc d_#{vif_map[:uuid]}_arp:' -j CONTINUE" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst_arp --protocol arp --arp-ip-src=#{hva_ipv4} --arp-mac-dst 00:00:00:00:00:00 --log-ip --log-arp --log-prefix 'Amc d_#{vif_map[:uuid]}_hst_arp:' -j CONTINUE" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-mac-dst 00:00:00:00:00:00 -j ACCEPT" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst_arp --protocol arp --arp-ip-src=#{hva_ipv4} --arp-mac-dst 00:00:00:00:00:00 -j ACCEPT" # guest <- * basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-mac-dst ! #{vif_map[:mac]} --log-ip --log-arp --log-prefix 'Dmc d_#{vif_map[:uuid]}_arp:' -j CONTINUE" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst_arp --protocol arp --arp-mac-dst ! #{vif_map[:mac]} --log-ip --log-arp --log-prefix 'Dmc d_#{vif_map[:uuid]}_s_hst_arp:' -j CONTINUE" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-mac-dst ! #{vif_map[:mac]} -j DROP" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst_arp --protocol arp --arp-mac-dst ! #{vif_map[:mac]} -j DROP" # anti spoof: ipv4 inst_map[:ips].each { |ipv4| #next if is_natted_ip? ipv4 # guest -> * basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-src ! #{ipv4} --log-ip --log-arp --log-prefix 'Dip s_#{vif_map[:uuid]}_arp:' -j CONTINUE" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-ip-src ! #{ipv4} --log-ip --log-arp --log-prefix 'Dip s_#{vif_map[:uuid]}_d_hst_arp:' -j CONTINUE" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-src ! #{ipv4} -j DROP" basic_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-ip-src ! #{ipv4} -j DROP" # guest <- * basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-dst ! #{ipv4} --log-ip --log-arp --log-prefix 'Dip d_#{vif_map[:uuid]}_arp:' -j CONTINUE" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst_arp --protocol arp --arp-ip-dst ! #{ipv4} --log-ip --log-arp --log-prefix 'Dip d_#{vif_map[:uuid]}_s_hst_arp:' -j CONTINUE" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-dst ! #{ipv4} -j DROP" basic_cmds << "ebtables -A d_#{vif_map[:uuid]}_s_hst_arp --protocol arp --arp-ip-dst ! #{ipv4} -j DROP" } basic_cmds end |
#build_ebtables_final_part(vif_map) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 549 def build_ebtables_final_part(vif_map) final_cmds = [] ################################ ## 3. final part ################################ # deny,allow final_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --log-level 4 --log-ip --log-arp --log-prefix 'D d_#{vif_map[:uuid]}_arp:' -j CONTINUE" final_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --log-level 4 --log-ip --log-arp --log-prefix 'D s_#{vif_map[:uuid]}_d_hst_arp:' -j CONTINUE" final_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp -j DROP" final_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp -j DROP" final_cmds end |
#build_ebtables_group_part(vif_map, inst_map, viftable_map) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 473 def build_ebtables_group_part(vif_map, inst_map, viftable_map) group_cmds = [] hva_ipv4 = Isono::Util.default_gw_ipaddr ################################ ## 2. group part ################################ same_subnet_ipv4s = rpc.request('hva-collector', 'get_group_instance_ipv4s', inst_map[:uuid]) network_map = rpc.request('hva-collector', 'get_network', inst_map[:instance_nics].first[:network_id]) raise "UnknownNetworkId" if network_map.nil? joined_network = IPAddress("#{network_map[:ipv4_gw]}/#{network_map[:prefix]}") [ network_map[:dns_server], network_map[:dhcp_server] ].each { |ipv4| next unless joined_network.include? IPAddress(ipv4) same_subnet_ipv4s << ipv4 } # network resource node(s) ng_maps = rpc.request('hva-collector', 'get_netfilter_groups_of_instance', inst_map[:uuid]) rules = ng_maps.map { |ng_map| ng_map[:rules].map { |rule| rule[:permission] } }.flatten build_rule(rules).each do |rule| begin # <ArgumentError: Invalid IP "0.0.0.0"> next unless joined_network.include? IPAddress(rule[:ip_source]) same_subnet_ipv4s << rule[:ip_source] rescue Exception => e p e end end same_subnet_ipv4s << network_map[:ipv4_gw] # guest node(s) in HyperVisor. alive_inst_maps = rpc.request('hva-collector', 'get_alive_instances', node.node_id) guest_ipv4s = alive_inst_maps.map { |alive_inst_map| alive_inst_map[:ips] }.flatten.uniq.compact same_subnet_ipv4s.uniq.reverse_each do |ipv4| next if vif_map[:ipv4] == ipv4 # get_macaddr_by_ipv4, ipv4 if ipv4 == hva_ipv4 #p "#{vif_map[:uuid]}(#{vif_map[:ipv4]}) -> [host] ***-****** (#{ipv4})" group_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-ip-src #{vif_map[:ipv4]} --arp-ip-dst #{ipv4} --log-ip --log-arp --log-prefix 'Afw s_#{vif_map[:uuid]}_d_hst_arp:' -j CONTINUE" group_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-ip-src #{vif_map[:ipv4]} --arp-ip-dst #{ipv4} -j ACCEPT" elsif guest_ipv4s.include?(ipv4) #p "#{vif_map[:uuid]}(#{vif_map[:ipv4]}) -> [guest] #{viftable_map[ipv4]}(#{ipv4})" # guest->guest group_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-src #{ipv4} --arp-ip-dst #{vif_map[:ipv4]} --log-ip --log-arp --log-prefix 'Afw d_#{vif_map[:uuid]}_arp:' -j CONTINUE" group_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-src #{ipv4} --arp-ip-dst #{vif_map[:ipv4]} -j ACCEPT" # guest->host group_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-ip-src #{vif_map[:ipv4]} --arp-ip-dst #{ipv4} --log-ip --log-arp --log-prefix 'Afw s_#{vif_map[:uuid]}_d_hst_arp:' -j CONTINUE" group_cmds << "ebtables -A s_#{vif_map[:uuid]}_d_hst_arp --protocol arp --arp-ip-src #{vif_map[:ipv4]} --arp-ip-dst #{ipv4} -j ACCEPT" unless viftable_map[ipv4].nil? # guest->guest group_cmds << "ebtables -A d_#{viftable_map[ipv4]}_arp --protocol arp --arp-ip-src #{vif_map[:ipv4]} --arp-ip-dst #{ipv4} --log-ip --log-arp --log-prefix 'Arv d_#{viftable_map[ipv4]}_arp:' -j CONTINUE" group_cmds << "ebtables -A d_#{viftable_map[ipv4]}_arp --protocol arp --arp-ip-src #{vif_map[:ipv4]} --arp-ip-dst #{ipv4} -j ACCEPT" # guest->host group_cmds << "ebtables -A s_#{viftable_map[ipv4]}_d_hst_arp --protocol arp --arp-ip-src #{ipv4} --arp-ip-dst #{vif_map[:ipv4]} --log-ip --log-arp --log-prefix 'Arv s_#{viftable_map[ipv4]}_d_hst_arp:' -j CONTINUE" group_cmds << "ebtables -A s_#{viftable_map[ipv4]}_d_hst_arp --protocol arp --arp-ip-src #{ipv4} --arp-ip-dst #{vif_map[:ipv4]} -j ACCEPT" end else #p "#{vif_map[:uuid]}(#{vif_map[:ipv4]}) -> [other] ***-******** (#{ipv4})" group_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-src #{ipv4} --arp-ip-dst #{vif_map[:ipv4]} --log-ip --log-arp --log-prefix 'Afw :d_#{vif_map[:uuid]}_arp' -j CONTINUE" group_cmds << "ebtables -A d_#{vif_map[:uuid]}_arp --protocol arp --arp-ip-src #{ipv4} --arp-ip-dst #{vif_map[:ipv4]} -j ACCEPT" end end group_cmds end |
#build_iptables_basic_part(vif_map, inst_map) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 564 def build_iptables_basic_part(vif_map, inst_map) basic_cmds = [] network_map = rpc.request('hva-collector', 'get_network', inst_map[:instance_nics].first[:network_id]) raise "UnknownNetworkId" if network_map.nil? ################################ ## 0. chain name ################################ # support IP protocol protocol_map = protocol_map(:iptables) # make chain names. chains = [] protocol_map.each { |k,v| chains << "s_#{vif_map[:uuid]}_#{k}" chains << "d_#{vif_map[:uuid]}_#{k}" } chains << "s_#{vif_map[:uuid]}" chains << "d_#{vif_map[:uuid]}" ################################ ## 1. basic part ################################ # metadata-server port = network_map[:metadata_server_port] || 80 [ 'A' ].each { |xcmd| basic_cmds << "iptables -t nat -#{xcmd} PREROUTING -m physdev --physdev-in #{vif_map[:uuid]} -d 169.254.169.254 -p tcp --dport 80 -j DNAT --to-destination #{network_map[:metadata_server]}:#{port}" } # create user defined chains. [ 'N' ].each { |xcmd| chains.each { |chain| basic_cmds << "iptables -#{xcmd} #{chain}" # logger & drop basic_cmds << "iptables -N #{chain}_drop" if @node.manifest.config.packet_drop_log basic_cmds << "iptables -A #{chain}_drop -j LOG --log-level 4 --log-prefix 'D #{chain}:'" end basic_cmds << "iptables -A #{chain}_drop -j DROP" } } # DHCP Server basic_cmds << "iptables -A d_#{vif_map[:uuid]}_udp -p udp ! -s #{network_map[:dhcp_server]} --sport 67 -j d_#{vif_map[:uuid]}_udp_drop" basic_cmds << "iptables -A d_#{vif_map[:uuid]}_udp -p udp ! -s #{network_map[:dhcp_server]} --sport 68 -j d_#{vif_map[:uuid]}_udp_drop" # group nodes # group node IPv4 addresses. ipv4s = rpc.request('hva-collector', 'get_group_instance_ipv4s', inst_map[:uuid]) ipv4s << network_map[:ipv4_gw] ipv4s.uniq.reverse_each { |addr| basic_cmds << "iptables -A d_#{vif_map[:uuid]} -s #{addr} -j ACCEPT" } # IP protocol routing [ 's', 'd' ].each do |bound| protocol_map.each { |k,v| basic_cmds << "iptables -N #{bound}_#{vif_map[:uuid]}_#{k}" case k when 'tcp' case bound when 's' basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -m state --state NEW,ESTABLISHED -p #{k} -j #{bound}_#{vif_map[:uuid]}_#{k}" when 'd' basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -m state --state RELATED,ESTABLISHED -p #{k} -j ACCEPT" basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -p #{k} -j #{bound}_#{vif_map[:uuid]}_#{k}" end when 'udp' case bound when 's' basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -m state --state NEW,ESTABLISHED -p #{k} -j #{bound}_#{vif_map[:uuid]}_#{k}" when 'd' basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -m state --state ESTABLISHED -p #{k} -j ACCEPT" basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -p #{k} -j #{bound}_#{vif_map[:uuid]}_#{k}" end when 'icmp' case bound when 's' basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -m state --state NEW,ESTABLISHED,RELATED -p #{k} -j #{bound}_#{vif_map[:uuid]}_#{k}" when 'd' basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -m state --state ESTABLISHED,RELATED -p #{k} -j ACCEPT" basic_cmds << "iptables -A #{bound}_#{vif_map[:uuid]} -p #{k} -j #{bound}_#{vif_map[:uuid]}_#{k}" end end } end basic_cmds << "iptables -A FORWARD -m physdev --physdev-is-bridged --physdev-in #{vif_map[:uuid]} -j s_#{vif_map[:uuid]}" basic_cmds << "iptables -A FORWARD -m physdev --physdev-is-bridged --physdev-out #{vif_map[:uuid]} -j d_#{vif_map[:uuid]}" ## ## ACCEPT ## # DHCP Server basic_cmds << "iptables -A d_#{vif_map[:uuid]}_udp -p udp -s #{network_map[:dhcp_server]} --sport 67 -j ACCEPT" basic_cmds << "iptables -A d_#{vif_map[:uuid]}_udp -p udp -s #{network_map[:dhcp_server]} --sport 68 -j ACCEPT" # DNS Server basic_cmds << "iptables -A s_#{vif_map[:uuid]}_udp -p udp -d #{network_map[:dns_server]} --dport 53 -j ACCEPT" ## ## DROP ## protocol_map.each { |k,v| # DHCP basic_cmds << "iptables -A s_#{vif_map[:uuid]} -d #{network_map[:dhcp_server]} -p #{k} -j s_#{vif_map[:uuid]}_#{k}_drop" # DNS basic_cmds << "iptables -A s_#{vif_map[:uuid]} -d #{network_map[:dns_server]} -p #{k} -j s_#{vif_map[:uuid]}_#{k}_drop" } basic_cmds end |
#build_iptables_final_part(vif_map) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 718 def build_iptables_final_part(vif_map) final_cmds = [] # support IP protocol protocol_map = protocol_map(:iptables) ################################ ## 3. final part ################################ # drop other routings protocol_map.each { |k,v| final_cmds << "iptables -A d_#{vif_map[:uuid]}_#{k} -p #{k} -j d_#{vif_map[:uuid]}_#{k}_drop" } # IP protocol routing [ 'd' ].each do |bound| protocol_map.each { |k,v| final_cmds << "iptables -A #{bound}_#{vif_map[:uuid]}_#{k} -j #{bound}_#{vif_map[:uuid]}_#{k}_drop" } end final_cmds end |
#build_iptables_group_part(vif_map, inst_map) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 681 def build_iptables_group_part(vif_map, inst_map) group_cmds = [] ################################ ## 2. group part ################################ ng_maps = rpc.request('hva-collector', 'get_netfilter_groups_of_instance', inst_map[:uuid]) rules = ng_maps.map { |ng_map| ng_map[:rules].map { |rule| rule[:permission] } }.flatten # security group build_rule(rules).each do |rule| case rule[:ip_protocol] when 'tcp', 'udp' if rule[:ip_fport] == rule[:ip_tport] group_cmds << "iptables -A d_#{vif_map[:uuid]}_#{rule[:ip_protocol]} -p #{rule[:ip_protocol]} -s #{rule[:ip_source]} --dport #{rule[:ip_fport]} -j ACCEPT" else group_cmds << "iptables -A d_#{vif_map[:uuid]}_#{rule[:ip_protocol]} -p #{rule[:ip_protocol]} -s #{rule[:ip_source]} --dport #{rule[:ip_fport]}:#{rule[:ip_tport]} -j ACCEPT" end when 'icmp' # icmp # This extension can be used if `--protocol icmp' is specified. It provides the following option: # [!] --icmp-type {type[/code]|typename} # This allows specification of the ICMP type, which can be a numeric ICMP type, type/code pair, or one of the ICMP type names shown by the command # iptables -p icmp -h if rule[:icmp_type] == -1 && rule[:icmp_code] == -1 group_cmds << "iptables -A d_#{vif_map[:uuid]}_#{rule[:ip_protocol]} -p #{rule[:ip_protocol]} -s #{rule[:ip_source]} -j ACCEPT" else group_cmds << "iptables -A d_#{vif_map[:uuid]}_#{rule[:ip_protocol]} -p #{rule[:ip_protocol]} -s #{rule[:ip_source]} --icmp-type #{rule[:icmp_type]}/#{rule[:icmp_code]} -j ACCEPT" end end end group_cmds end |
#build_rule(rules = []) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 743 def build_rule(rules = []) rule_maps = [] rules.each do |rule| rule = rule.strip.gsub(/[\s\t]+/, '') from_group = false ipv4s = [] # ex. # "tcp:22,22,ip4:0.0.0.0" # "udp:53,53,ip4:0.0.0.0" # "icmp:-1,-1,ip4:0.0.0.0" # 1st phase # ip_tport : tcp,udp? 1 - 16bit, icmp: -1 # id_port has been separeted in first phase. from_pair, ip_tport, source_pair = rule.split(',') next if from_pair.nil? next if ip_tport.nil? next if source_pair.nil? # 2nd phase # ip_protocol : [ tcp | udp | icmp ] # ip_fport : tcp,udp? 1 - 16bit, icmp: -1 ip_protocol, ip_fport = from_pair.split(':') # protocol : [ ip4 | ip6 | #{account_id} ] # ip_source : ip4? xxx.xxx.xxx.xxx./[0-32], ip6? (not yet supprted), #{netfilter_group_id} protocol, ip_source = source_pair.split(':') begin s = StringScanner.new(protocol) until s.eos? case when s.scan(/ip6/) # TODO#FUTURE: support IPv6 address format next when s.scan(/ip4/) # IPAddress doesn't support prefix '0'. ip_addr, prefix = ip_source.split('/', 2) if prefix.to_i == 0 ip_source = ip_addr end when s.scan(/a-\w{8}/) from_group = true inst_maps = rpc.request('hva-collector', 'get_instances_of_account_netfilter_group', protocol, ip_source) inst_maps.each { |inst_map| ipv4s << inst_map[:ips] } else raise "unexpected protocol '#{s.peep(20)}'" end end rescue Exception => e p e next end begin if from_group == false #p "from_group:(#{from_group}) ip_source -> #{ip_source}" ip = IPAddress(ip_source) ip_source = case ip.u32 when 0 "#{ip.address}/0" else "#{ip.address}/#{ip.prefix}" end else ipv4s = ipv4s.flatten.uniq end rescue Exception => e p e next end case ip_protocol when 'tcp', 'udp' ip_fport = ip_fport.to_i ip_tport = ip_tport.to_i # validate port range [ ip_fport, ip_tport ].each do |port| next unless port >= 1 && port <= 65535 end if ip_fport <= ip_tport if from_group == false rule_maps << { :ip_protocol => ip_protocol, :ip_fport => ip_fport, :ip_tport => ip_tport, :protocol => protocol, :ip_source => ip_source, } else ipv4s.each { |ip| rule_maps << { :ip_protocol => ip_protocol, :ip_fport => ip_fport, :ip_tport => ip_tport, :protocol => 'ip4', :ip_source => ip, } } end end when 'icmp' # via http://docs.amazonwebservices.com/AWSEC2/latest/CommandLineReference/ # # For the ICMP protocol, the ICMP type and code must be specified. # This must be specified in the format type:code where both are integers. # Type, code, or both can be specified as -1, which is a wildcard. icmp_type = ip_fport.to_i icmp_code = ip_tport.to_i # icmp_type case icmp_type when -1 when 0, 3, 5, 8, 11, 12, 13, 14, 15, 16, 17, 18 else next end # icmp_code case icmp_code when -1 when 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 # when icmp_type equals -1 icmp_code must equal -1. next if icmp_type == -1 else next end if from_group == false rule_maps << { :ip_protocol => ip_protocol, :icmp_type => ip_tport.to_i, # ip_tport.to_i, # -1 or 0, 3, 5, 8, 11, 12, 13, 14, 15, 16, 17, 18 :icmp_code => ip_fport.to_i, # ip_fport.to_i, # -1 or 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 :protocol => protocol, :ip_source => ip_source, } else ipv4s.each { |ip| rule_maps << { :ip_protocol => ip_protocol, :icmp_type => ip_tport.to_i, # ip_tport.to_i, # -1 or 0, 3, 5, 8, 11, 12, 13, 14, 15, 16, 17, 18 :icmp_code => ip_fport.to_i, # ip_fport.to_i, # -1 or 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 :protocol => 'ip4', :ip_source => ip, } } end end end rule_maps end |
#build_vif_map(inst_map = {}) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 259 def build_vif_map(inst_map = {}) vif_map = { :uuid => inst_map[:instance_nics].first[:uuid], :mac => inst_map[:instance_nics].first[:mac_addr].unpack('A2'*6).join(':'), :ipv4 => inst_map[:ips].first, } end |
#do_exec(cmds) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 285 def do_exec(cmds) recmds = [] eos = "__EOS_#{Isono::Util.gen_id}___" recmds << "/bin/cat <<'#{eos}' | /bin/bash" cmds.flatten.uniq.each { |cmd| puts cmd if @node.manifest.config.verbose_netfilter == true recmds << cmd } recmds << "#{eos}" logger.debug("applying rule line(s): #{recmds.size - 2}") system(recmds.join("\n")) logger.debug("applied rule line(s): #{recmds.size - 2}") end |
#event ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 908 def event @event ||= Isono::NodeModules::EventChannel.new(@node) end |
#init_bandwidth_limit(network_maps) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 379 def init_bandwidth_limit(network_maps) do_exec([clear_bandwidth_limits,limit_bandwidth(network_maps)]) end |
#init_ebtables(inst_maps = [], viftable_map = {}) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 301 def init_ebtables(inst_maps = [], viftable_map = {}) init_cmds = [] basic_cmds = [] group_cmds = [] nat_cmds = [] final_cmds = [] init_cmds << "ebtables --init-table" #Clear the nat table. This table is only used in build_ebtables_nat_part init_cmds << "ebtables -t nat --init-table" inst_maps.each { |inst_map| vif_map = build_vif_map(inst_map) basic_cmds << build_ebtables_basic_part(vif_map, inst_map) group_cmds << build_ebtables_group_part(vif_map, inst_map, viftable_map) final_cmds << build_ebtables_final_part(vif_map) } viftable_map.each { |k,v| logger.debug("viftable: #{v} <=> #{k}") } do_exec([init_cmds, basic_cmds, group_cmds, final_cmds]) end |
#init_iptables(inst_maps = []) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 327 def init_iptables(inst_maps = []) init_cmds = [] basic_cmds = [] group_cmds = [] nat_cmds = [] final_cmds = [] [ 'raw', 'nat', 'filter' ].each { |table| [ 'F', 'Z', 'X' ].each { |xcmd| init_cmds << "iptables -t #{table} -#{xcmd}" } } #TODO: Make an option in the config file to use ipset use_ipset = true if use_ipset ['F','X'].each { |xcmd| init_cmds << "ipset -#{xcmd}" } end # via http://backreference.org/2010/06/11/iptables-debugging/ # To debug ipv4 packets. # $ sudo tail -F /var/log/kern.log | grep TRACE: if @node.manifest.config.debug_iptables init_cmds << "iptables -t raw -A OUTPUT -p icmp -j TRACE" init_cmds << "iptables -t raw -A PREROUTING -p icmp -j TRACE" end inst_maps.each { |inst_map| vif_map = build_vif_map(inst_map) basic_cmds << build_iptables_basic_part(vif_map, inst_map) group_cmds << build_iptables_group_part(vif_map, inst_map) final_cmds << build_iptables_final_part(vif_map) } do_exec([init_cmds, basic_cmds, group_cmds, final_cmds]) end |
#init_netfilter ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 190 def init_netfilter begin inst_maps = rpc.request('hva-collector', 'get_alive_instances', node.node_id) viftable_map = {} inst_maps = inst_maps.map { |inst_map| viftable_map[ inst_map[:ips].first ] = inst_map[:instance_nics].first[:uuid] # Does the hva have instance? unless inst_map[:host_pool][:node_id] == node.node_id logger.warn("no match for the instance: #{inst_map[:uuid]}") next end # Does host have vif? next unless valid_nic?(inst_map[:instance_nics].first[:uuid]) inst_maps }.flatten.uniq.compact init_iptables(inst_maps) if @node.manifest.config.enable_iptables init_ebtables(inst_maps, viftable_map) if @node.manifest.config.enable_ebtables init_static_nat(inst_maps) if @node.manifest.config.enable_iptables && @node.manifest.config.enable_ebtables init_bandwidth_limit(networks = rpc.request('hva-collector', 'get_networks')) if @node.manifest.config.enable_iptables sleep 1 logger.info("initialized netfilter") rescue Exception => e p e end end |
#init_static_nat(inst_maps = []) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 367 def init_static_nat(inst_maps = []) accept_cmds = [] nat_cmds = [] inst_maps.each { |inst_map| accept_cmds << nat_exceptions(inst_map) unless @node.manifest.config.use_ipset nat_cmds << nat_instance(inst_map) } do_exec([accept_cmds,nat_cmds]) end |
#protocol_map(type) ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 267 def protocol_map(type) case type when :iptables { 'tcp' => 'tcp', 'udp' => 'udp', 'icmp' => 'icmp', } when :ebtables { 'ip4' => 'ip4', 'arp' => 'arp', #'ip6' => 'ip6', #'rarp' => '0x8035', } end end |
#refresh_netfilter_by_friend_instance_id(inst_id) ⇒ Object
from event_subscriber
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 221 def refresh_netfilter_by_friend_instance_id(inst_id) raise "UnknownInstanceID" if inst_id.nil? begin ng_maps = rpc.request('hva-collector', 'get_netfilter_groups_of_instance', inst_id) # get friend instance(s) friend_inst_maps = ng_maps.map { |ng_map| rpc.request('hva-collector', 'get_instances_of_netfilter_group', ng_map[:id]) }.flatten.uniq guest_inst_maps = rpc.request('hva-collector', 'get_alive_instances', node.node_id) uuids = friend_inst_maps.map { |inst_map| inst_map[:uuid] } & guest_inst_maps.map { |inst_map| inst_map[:uuid] } logger.info("my guest instance(s)?: #{uuids.inspect}") if uuids.flatten.uniq.size > 0 init_netfilter else # group_instance: 1->0 inst_map = rpc.request('hva-collector', 'get_instance', inst_id) init_netfilter if inst_map[:host_pool][:node_id] == node.node_id end rescue Exception => e p e end end |
#refresh_netfilter_by_joined_netfilter_group_id(netfilter_group_id) ⇒ Object
from event_subscriber
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 248 def refresh_netfilter_by_joined_netfilter_group_id(netfilter_group_id) raise "UnknownNetfilterGroupID" if netfilter_group_id.nil? begin inst_maps = rpc.request('hva-collector', 'get_instances_of_netfilter_group', netfilter_group_id) init_netfilter if inst_maps.size > 0 rescue Exception => e p e end end |
#rpc ⇒ Object
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# File 'lib/dcmgr/node_modules/service_netfilter.rb', line 904 def rpc @rpc ||= Isono::NodeModules::RpcChannel.new(@node) end |