Class: Yast::SuSEFirewallClass
- Inherits:
-
Module
- Object
- Module
- Yast::SuSEFirewallClass
- Defined in:
- ../../src/modules/SuSEFirewall.rb
Instance Method Summary (collapse)
-
- (Boolean) ActivateConfiguration
Function which stops firewall.
-
- (Object) AddAllowedBroadcast(needed_ports, zone)
Local function adds list of ports to ports accepting broadcast.
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- (Object) AddAllowedPortsOrServices(add_ports, protocol, zone)
Local function allows ports for requested protocol and zone.
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- (Object) AddForwardIntoMasqueradeRule(source_net, forward_to_ip, protocol, req_port, redirect_to_port, requested_ip)
Adds forward into masquerade rule.
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- (Object) AddInterfaceIntoZone(interface, zone)
Functions adds interface into defined zone.
-
- (Boolean) AddService(service, protocol, interface)
Function adds service into selected zone (or zone of interface) for selected protocol.
-
- (Object) AddServiceDefinedByPackageIntoZone(service, zone)
Adds service defined by package (FATE #300687) into list of enabled services.
-
- (Object) AddServiceSupportIntoZone(service, zone)
Local function adds well-known service's support into zone.
-
- (Object) AddSpecialInterfaceIntoZone(interface, zone)
Functions adds special string into defined zone.
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- (Object) AddXenSupport
Function adds a special interface 'xenbr+' into the FW_FORWARD_ALWAYS_INOUT_DEV variable.
-
- (Boolean) AnyRPCServiceInConfiguration
Function returns whether some RPC service is allowed in the configuration.
- - (Object) ArePortsOrServicesAllowed(needed_ports, protocol, zone, check_for_aliases)
- - (Object) CheckKernelModules
-
- (Object) ConvertToServicesDefinedByPackages
Converts old built-in service definitions to services defined by packages.
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- (Object) DecreaseVerbosity
Local function for decreasing the verbosity level.
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- (Boolean) DisableServices
Functions disables services needed for SuSEFirewall in /etc/inet.d/.
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- (Boolean) EnableServices
Functions enables services needed for SuSEFirewall in /etc/inet.d/.
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- (Hash{String => Object}) Export
Function for getting exported SuSEFirewall configuration.
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- (Object) FillUpEmptyConfig
Fills the configuration with default settings, adjusts internal variables that firewall cannot be configured.
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- (String) GetAcceptExpertRules(zone)
Returns list of rules describing protocols and ports that are allowed to be accessed from listed hosts.
-
- (Array<String>) GetAdditionalServices(protocol, zone)
This powerful function returns list of services/ports which are not assigned to any fully-supported known-services.
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- (Array<String>) GetAllDialUpInterfaces
Function returns list of dial-up interfaces.
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- (Array<Hash{String => String>}) GetAllKnownInterfaces
Function returns list of maps of known interfaces.
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- (Array<String>) GetAllNonDialUpInterfaces
Function returns list of non-dial-up interfaces.
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- (Array<String>) GetAllowedServicesForZoneProto(zone, protocol)
Function returns list of allowed services for zone and protocol.
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- (Hash{String => Array<String>}) GetBroadcastAllowedPorts
Local function return map of allowed ports (without aliases).
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- (String) GetBroadcastConfiguration(zone)
Local function returns configuration string for broadcast packets.
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- (String) GetConfigurationStringZone(zone_string)
Local function returns zone name (shortname) for configuration string.
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- (String) GetDefaultValue(variable)
Local function for returning default values (if defined) for sysconfig variables.
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- (Boolean) GetEnableService
Function which returns whether SuSEfirewall should be enabled in /etc/init.d/ starting scripts during the Write() process.
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- (Array<String>) GetFirewallInterfaces
Function returns all interfaces already configured in firewall.
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- (Hash{String => Array<String>}) GetFirewallInterfacesMap
Function returns map of
interfaces in zones
. -
- (Array<String>) GetFirewallKernelModules
Returns list of additional kernel modules, that are loaded by firewall on startup.
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- (String) GetIgnoreLoggingBroadcast(zone)
Function returns yes/no - ingoring broadcast for zone.
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- (Array<String>) GetInterfacesInZone(zone)
Function returns list of known interfaces in requested zone.
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- (Array<String>) GetInterfacesInZoneSupportingAnyFeature(zone)
Function returns list of known interfaces in requested zone.
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- (Array<String>) GetKnownFirewallZones
Function returns list of known firewall zones (shortnames).
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- (Array<Hash{String => String>}) GetListOfForwardsIntoMasquerade
Function returns list of rules of forwarding ports to masqueraded IPs.
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- (Array<String>) GetListOfKnownInterfaces
Function returns list of all known interfaces.
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- (Array<String>) GetListOfSuSEFirewallVariables
Function return list of variables needed for SuSEFirewall's settings.
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- (String) GetLoggingSettings(rule)
Function returns actual state of logging for rule taken as parameter.
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- (Boolean) GetMasquerade
Function returns actual state of Masquerading support.
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- (Boolean) GetModified
Functions returns whether any firewall's configuration was modified.
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- (Boolean) GetProtectFromInternalZone
Function returns if firewall is protected from internal zone.
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- (String) GetProtocolTranslatedName(protocol)
Returns translated protocol name.
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- (Hash <String, Hash{String => Boolean>}) GetServices(services)
Function returns map of supported services in all firewall zones.
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- (Array<String>) GetServicesAcceptRelated(zone)
Returns list of FW_SERVICES_ACCEPT_RELATED_*: Services to allow that are considered RELATED by the connection tracking engine, e.g., SLP browsing reply or Samba browsing reply.
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- (Hash <String, Hash{String => Boolean} >) GetServicesInZones(services)
Function returns map of supported services all network interfaces.
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- (Array<String>) GetSpecialInterfacesInZone(zone)
Function returns list of special strings like 'any' or 'auto' and uknown interfaces.
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- (Boolean) GetStartService
Function which returns if SuSEfirewall2 should start in Write process.
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- (Boolean) GetSupportRoute
Function returns if firewall supports routing.
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- (String) GetTrustIPsecAs
Function returns the trust level of IPsec packets.
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- (String) GetZoneConfigurationString(zone)
Local function returns configuration string used in configuration for zone.
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- (String) GetZoneFullName(zone)
Function returns localized name of the zone identified by zone shortname.
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- (String) GetZoneOfInterface(interface)
Function returns the firewall zone of interface, nil if no zone includes the interface.
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- (Array<String>) GetZonesOfInterfaces(interfaces)
Function returns list of zones of requested interfaces.
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- (Array<String>) GetZonesOfInterfacesWithAnyFeatureSupported(interfaces)
Function returns list of zones of requested interfaces.
-
- (Boolean) HaveService(service, protocol, interface)
Function returns if requested service is allowed in respective zone.
-
- (Object) Import(import_settings)
Function for setting SuSEFirewall configuration from input.
-
- (Object) IncreaseVerbosity
Local function for increasing the verbosity level.
-
- (Array<String>) InterfacesSupportedByAnyFeature(zone)
Returns list of interfaces not mentioned in any zone and covered by the special string 'any' in zone 'EXT' if such string exists there and the zone is EXT.
-
- (Boolean) IsAnyNetworkInterfaceSupported
Function returns whether the feature 'any' network interface is supported in the firewall configuration.
-
- (Boolean) IsBroadcastAllowed(needed_ports, zone)
Function returns if broadcast is allowed for needed ports in zone.
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- (Boolean) IsEnabled
Function determines if all SuSEFirewall scripts are enabled in init scripts /etc/init.d/ now.
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- (Boolean) IsInterfaceInZone(interface, zone)
Function returns if the interface is in zone.
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- (Boolean) IsKnownZone(zone)
Local function returns if zone (shortname like “EXT”) is supported by firewall.
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- (Boolean) IsOtherFirewallRunning
Function returns if any other firewall then SuSEfirewall2 is currently running on the system.
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- (Boolean) IsServiceDefinedByPackageSupportedInZone(service, zone)
Returns whether a service is mentioned in FW_CONFIGURATIONS_.
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- (Boolean) IsServiceSupportedInZone(service, zone)
Function returns if service is supported (allowed) in zone.
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- (Boolean) IsStarted
Function determines if at least one SuSEFirewall script is started now.
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- (Boolean) IsSupportedProtocol(protocol)
Local function returns if protocol is supported by firewall.
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- (Boolean) IsVerbose
Local function returns if other functions should produce verbose output.
- - (Object) main
-
- (Boolean) Read
Function for reading SuSEFirewall configuration.
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- (Object) ReadCurrentConfiguration
Local function reads current configuration and fills internal values.
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- (Object) ReadDefaultConfiguration
Local function sets the default configuration and fills internal values.
-
- (Object) ReadSysconfigSuSEFirewall(variables)
Local function for reading list of sysconfig variables into internal variables.
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- (Object) RemoveAllowedBroadcast(needed_ports, zone)
Local function removes list of ports from port allowing broadcast packets in zone.
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- (Object) RemoveAllowedPortsOrServices(remove_ports, protocol, zone, check_for_aliases)
Local function removes ports and their aliases (if check_for_aliases is true), for requested protocol and zone.
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- (Object) RemoveForwardIntoMasqueradeRule(remove_item)
Function removes rule for forwarding into masquerade from the list of current rules returned by GetListOfForwardsIntoMasquerade().
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- (Object) RemoveInterfaceFromZone(interface, zone)
Function removes interface from defined zone.
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- (Object) RemoveOldAllowedServiceFromZone(old_service_def, zone)
Removes old-service definitions before they are added as services defined by packages.
-
- (Boolean) RemoveService(service, protocol, interface)
Function removes service from selected zone (or for interface) for selected protocol.
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- (Object) RemoveServiceDefinedByPackageFromZone(service, zone)
Removes service defined by package (FATE #300687) from enabled services.
-
- (Boolean) RemoveServiceFromProtocolZone(remove_service, protocol, zone)
Local function for removing (disallowing) single service/port for defined protocol and zone.
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- (Object) RemoveServiceSupportFromZone(service, zone)
Local function removes well-known service's support from zone.
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- (Object) RemoveSpecialInterfaceFromZone(interface, zone)
Function removes special string from defined zone.
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- (Boolean) ReportOnlyOnce(what_to_report)
Report the error, warning, message only once.
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- (Object) ResetModified
Do not use this function.
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- (Object) ResetReadFlag
Function resets flag which doesn't allow to read configuration from disk again.
-
- (Object) ResetSysconfigSuSEFirewall(variables)
Local function for reseting list of sysconfig variables in internal variables.
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- (Boolean) SaveAndRestartService
Function for saving configuration and restarting firewall.
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- (Boolean) SetAcceptExpertRules(zone, expert_rules)
Sets expert allow rules for zone.
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- (Object) SetAdditionalServices(protocol, zone, new_list_services)
Function sets additional ports/services from taken list.
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- (Object) SetAllowedServicesForZoneProto(allowed_services, zone, protocol)
Function sets list of services as allowed ports for zone and protocol.
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- (Object) SetBroadcastAllowedPorts(broadcast)
Function creates allowed-broadcast-ports string from broadcast map and saves it.
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- (Object) SetBroadcastConfiguration(zone, broadcast_configuration)
Local function saves configuration string for broadcast packets.
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- (Object) SetEnableService(enable_service)
Function which sets if SuSEfirewall should start in Write process.
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- (Object) SetFirewallKernelModules(k_modules)
Sets list of additional kernel modules to be loaded by firewall on startup.
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- (Object) SetIgnoreLoggingBroadcast(zone, bcast)
Function sets yes/no - ingoring broadcast for zone.
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- (Object) SetInstallPackagesIfMissing(new_status)
By default SuSEfirewall2 packages are just checked whether they are installed.
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- (Object) SetLoggingSettings(rule, state)
Function sets state of logging for rule taken as parameter.
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- (Object) SetMasquerade(enable)
Function sets Masquerade support.
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- (Object) SetModified
Function sets internal variable, which indicates, that any “firewall settings were modified”, to “true”.
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- (Object) SetProtectFromInternalZone(set_protect)
Function sets if firewall should be protected from internal zone.
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- (Boolean) SetServices(services_ids, interfaces, new_status)
Function sets status for several services on several network interfaces.
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- (Object) SetServicesAcceptRelated(zone, ruleset)
Functions sets FW_SERVICES_ACCEPT_RELATED_*: Services to allow that are considered RELATED by the connection tracking engine, e.g., SLP browsing reply or Samba browsing reply.
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- (Boolean) SetServicesForZones(services_ids, firewall_zones, new_status)
Function sets status for several services in several firewall zones.
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- (Object) SetStartService(start_service)
Function which sets if SuSEfirewall should start in Write process.
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- (Object) SetSupportRoute(set_route)
Function sets if firewall should support routing.
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- (Object) SetTrustIPsecAs(zone)
Function sets how firewall should trust successfully decrypted IPsec packets.
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- (Boolean) StartServices
Functions starts services needed for SuSEFirewall.
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- (Boolean) StopServices
Functions stops services needed for SuSEFirewall.
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- (Boolean) SuSEFirewallIsInstalled
Returns whether all needed packages are installed.
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- (Boolean) Write
Function for writing and enabling configuration it is an union of WriteConfiguration() and ActivateConfiguration().
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- (Boolean) WriteConfiguration
Function writes configuration into /etc/sysconfig/ and enables or disables firewall in /etc/init.d/ by the setting SetEnableService(boolean).
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- (Boolean) WriteOneRecordPerLine(key_name)
Returns whether records in variable should be written one record on one line.
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- (Boolean) WriteOnly
Helper function for the backward compatibility.
-
- (Boolean) WriteSysconfigSuSEFirewall(variables)
Local function for writing the list of internal variables into sysconfig.
Instance Method Details
- (Boolean) ActivateConfiguration
Function which stops firewall. Then firewall is started immediately when firewall is wanted to be started: SetStartService(boolean).
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# File '../../src/modules/SuSEFirewall.rb', line 2612 def ActivateConfiguration # just disabled return true if !SuSEFirewallIsInstalled() # starting firewall during second stage can cause deadlock in systemd - bnc#798620 # Moreover, it is not needed. Firewall gets started via dependency on multi-user.target # when second stage is over. if Mode.installation Builtins.y2milestone( "Do not touch firewall services during installation") return true end # Firewall should start after Write() if GetStartService() # Not started - start it if !IsStarted() Builtins.y2milestone("Starting firewall services") return StartServices() # Started - restart it else # modified - restart it, or ... # bugzilla #186186 # If any RPC service is configured to be allowed, always restart the firewall # Some of these service's ports might have been reallocated (when SuSEFirewall # is used from outside, e.g., yast2-nfs-server) if GetModified() || AnyRPCServiceInConfiguration() Builtins.y2milestone("Stopping firewall services") StopServices() Builtins.y2milestone("Starting firewall services") return StartServices() # not modified - skip restart else Builtins.y2milestone( "Configuration hasn't modified, skipping restarting services" ) return true end end # Firewall should stop after Write() else # started - stop if IsStarted() Builtins.y2milestone("Stopping firewall services") return StopServices() # stopped - skip stopping else Builtins.y2milestone("Firewall has been stopped already") return true end end end |
- (Object) AddAllowedBroadcast(needed_ports, zone)
Local function adds list of ports to ports accepting broadcast
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# File '../../src/modules/SuSEFirewall.rb', line 707 def AddAllowedBroadcast(needed_ports, zone) needed_ports = deep_copy(needed_ports) # changing only if ports are not allowed if !IsBroadcastAllowed(needed_ports, zone) SetModified() allowed_ports = GetBroadcastAllowedPorts() list_ports_allowed = Ops.get(allowed_ports, zone, []) # ports to be allowed one by one Builtins.foreach(needed_ports) do |allow_this_port| # at first: remove all aliases of ports yet mentioned in zone aliases_of_port = PortAliases.GetListOfServiceAliases(allow_this_port) list_ports_allowed = Builtins.filter(list_ports_allowed) do |just_allowed| !Builtins.contains(aliases_of_port, just_allowed) end # at second: add only one list_ports_allowed = Builtins.add(list_ports_allowed, allow_this_port) end Ops.set(allowed_ports, zone, list_ports_allowed) # save it using function SetBroadcastAllowedPorts(allowed_ports) end nil end |
- (Object) AddAllowedPortsOrServices(add_ports, protocol, zone)
Local function allows ports for requested protocol and zone.
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# File '../../src/modules/SuSEFirewall.rb', line 879 def AddAllowedPortsOrServices(add_ports, protocol, zone) add_ports = deep_copy(add_ports) if Ops.less_than(Builtins.size(add_ports), 1) Builtins.y2warning( "Undefined list of %1 services/ports for service", protocol ) return end SetModified() # all allowed ports allowed_services = GetAllowedServicesForZoneProto(zone, protocol) allowed_services = Convert.convert( Builtins.union(allowed_services, add_ports), :from => "list", :to => "list <string>" ) allowed_services = PortRanges.FlattenServices(allowed_services, protocol) SetAllowedServicesForZoneProto(allowed_services, zone, protocol) nil end |
- (Object) AddForwardIntoMasqueradeRule(source_net, forward_to_ip, protocol, req_port, redirect_to_port, requested_ip)
Adds forward into masquerade rule.
AddForwardIntoMasqueradeRule (“0/0”, “192.168.32.1”, “TCP”, “80”, “8080”, “10.0.0.1”)
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# File '../../src/modules/SuSEFirewall.rb', line 3224 def AddForwardIntoMasqueradeRule(source_net, forward_to_ip, protocol, req_port, redirect_to_port, requested_ip) SetModified() masquerade_rules = Ops.get_string(@SETTINGS, "FW_FORWARD_MASQ", "") masquerade_rules = Ops.add( Ops.add( Ops.add( Ops.add( Ops.add( Ops.add( Ops.add( Ops.add(masquerade_rules, masquerade_rules != "" ? " " : ""), source_net ), "," ), forward_to_ip ), "," ), protocol ), "," ), req_port ) if redirect_to_port != "" || requested_ip != "" if requested_ip != "" masquerade_rules = Ops.add( Ops.add( Ops.add(Ops.add(masquerade_rules, ","), redirect_to_port), "," ), requested_ip ) # port1 -> port2 are same elsif redirect_to_port != req_port masquerade_rules = Ops.add( Ops.add(masquerade_rules, ","), redirect_to_port ) end end Ops.set(@SETTINGS, "FW_FORWARD_MASQ", masquerade_rules) nil end |
- (Object) AddInterfaceIntoZone(interface, zone)
Functions adds interface into defined zone. All appearances of interface in other zones are removed.
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# File '../../src/modules/SuSEFirewall.rb', line 1744 def AddInterfaceIntoZone(interface, zone) SetModified() current_zone = GetZoneOfInterface(interface) DecreaseVerbosity() # removing all appearances of interface in zones, excepting current_zone==new_zone while current_zone != nil && current_zone != zone # interface is in any zone already, removing it at first RemoveInterfaceFromZone(interface, current_zone) if current_zone != zone current_zone = GetZoneOfInterface(interface) end IncreaseVerbosity() Builtins.y2milestone( "Adding interface '%1' into '%2' zone.", interface, zone ) interfaces_in_zone = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) interfaces_in_zone = Builtins.toset( Builtins.add(interfaces_in_zone, interface) ) Ops.set( @SETTINGS, Ops.add("FW_DEV_", zone), Builtins.mergestring(interfaces_in_zone, " ") ) nil end |
- (Boolean) AddService(service, protocol, interface)
Function adds service into selected zone (or zone of interface) for selected protocol. Function take care about port-aliases, first of all, removes all of them.
AddService (“ssh”, “TCP”, “EXT”) AddService ("ssh", "TCP", "dsl0")
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# File '../../src/modules/SuSEFirewall.rb', line 1939 def AddService(service, protocol, interface) success = false Builtins.y2milestone( "Adding service %1, protocol %2 to %3", service, protocol, interface ) if !IsSupportedProtocol(protocol) Builtins.y2error("Unknown protocol: %1", protocol) return false end zones_affected = [] # "all" means for all known zones if interface == "all" zones_affected = GetKnownFirewallZones() # zone or interface name else # is probably an interface name if !IsKnownZone(interface) # interface is probably interface-name, checking for respective zone interface = GetZoneOfInterface(interface) # interface is not assigned to any zone if interface == nil # TRANSLATORS: Error message, %1 = interface name (like eth0) Report.Error( Builtins.sformat( _( "Interface '%1' is not assigned to any firewall zone.\nRun YaST2 Firewall and assign it.\n" ), interface ) ) Builtins.y2warning( "Interface '%1' is not assigned to any firewall zone", interface ) return false end end zones_affected = [interface] end SetModified() # Adding service support into each mentioned zone Builtins.foreach(zones_affected) do |zone| # If there isn't already if !ArePortsOrServicesAllowed([service], protocol, zone, true) AddAllowedPortsOrServices([service], protocol, zone) else Builtins.y2milestone( "Port %1 has been already allowed in %2", service, zone ) end end true end |
- (Object) AddServiceDefinedByPackageIntoZone(service, zone)
Adds service defined by package (FATE #300687) into list of enabled services.
AddServiceDefinedByPackageIntoZone (“service:irc-server”, “EXT”);
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# File '../../src/modules/SuSEFirewall.rb', line 951 def AddServiceDefinedByPackageIntoZone(service, zone) return nil if !IsKnownZone(zone) if service == nil Builtins.y2error("Service Id can't be nil!") return nil elsif Builtins.regexpmatch(service, "^service:.*") service = Builtins.regexpsub(service, "^service:(.*)", "\\1") end # services defined by package are listed without "service:" which is here # just to distinguish between dynamic and static definitions supported_services = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_CONFIGURATIONS_", zone), ""), " " ) # Adding the service supported_services = Builtins.toset( Builtins.add(supported_services, service) ) Ops.set( @SETTINGS, Ops.add("FW_CONFIGURATIONS_", zone), Builtins.mergestring(supported_services, " ") ) SetModified() nil end |
- (Object) AddServiceSupportIntoZone(service, zone)
Local function adds well-known service's support into zone. It first of all removes the current support for service with port-aliases.
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# File '../../src/modules/SuSEFirewall.rb', line 1033 def AddServiceSupportIntoZone(service, zone) needed = SuSEFirewallServices.GetNeededPortsAndProtocols(service) # unknown service if needed == nil Builtins.y2error("Undefined service '%1'", service) return nil end SetModified() # FATE #300687: Ports for SuSEfirewall added via packages if SuSEFirewallServices.ServiceDefinedByPackage(service) AddServiceDefinedByPackageIntoZone(service, zone) return nil end # Removing service ports first (and also port aliases for TCP and UDP) if IsServiceSupportedInZone(service, zone) == true RemoveServiceSupportFromZone(service, zone) end Builtins.foreach(@service_defined_by) do |key| needed_ports = Ops.get(needed, key, []) next if needed_ports == [] if key == "tcp_ports" AddAllowedPortsOrServices(needed_ports, "TCP", zone) elsif key == "udp_ports" AddAllowedPortsOrServices(needed_ports, "UDP", zone) elsif key == "rpc_ports" AddAllowedPortsOrServices(needed_ports, "RPC", zone) elsif key == "ip_protocols" AddAllowedPortsOrServices(needed_ports, "IP", zone) elsif "broadcast_ports" == key AddAllowedBroadcast(needed_ports, zone) else Builtins.y2error("Unknown key '%1'", key) end end nil end |
- (Object) AddSpecialInterfaceIntoZone(interface, zone)
Functions adds special string into defined zone.
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# File '../../src/modules/SuSEFirewall.rb', line 3068 def AddSpecialInterfaceIntoZone(interface, zone) SetModified() Builtins.y2milestone( "Adding special string '%1' into '%2' zone.", interface, zone ) interfaces_in_zone = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) interfaces_in_zone = Builtins.toset( Builtins.add(interfaces_in_zone, interface) ) Ops.set( @SETTINGS, Ops.add("FW_DEV_", zone), Builtins.mergestring(interfaces_in_zone, " ") ) nil end |
- (Object) AddXenSupport
Function adds a special interface 'xenbr+' into the FW_FORWARD_ALWAYS_INOUT_DEV variable.
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# File '../../src/modules/SuSEFirewall.rb', line 3392 def AddXenSupport Builtins.y2milestone( "The whole functionality is currently handled by SuSEfirewall2 itself" ) nil end |
- (Boolean) AnyRPCServiceInConfiguration
Function returns whether some RPC service is allowed in the configuration. These services reallocate their ports when restarted. See details in bugzilla bug #186186.
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# File '../../src/modules/SuSEFirewall.rb', line 2583 def AnyRPCServiceInConfiguration ret = false Builtins.foreach(GetKnownFirewallZones()) do |fw_zone| fw_rule = Builtins.sformat("FW_SERVICES_%1_RPC", fw_zone) listed_services = Ops.get_string(@SETTINGS, fw_rule) do GetDefaultValue(fw_rule) end # easy case next if listed_services == nil || listed_services == "" # something listed but it still might be empty definition services_list = Builtins.splitstring(listed_services, " \n\t") services_list = Builtins.filter(services_list) do |service| service != "" end if Ops.greater_than(Builtins.size(listed_services), 0) ret = true raise Break end end Builtins.y2milestone("Some RPC service found: %1", ret) ret end |
- (Object) ArePortsOrServicesAllowed(needed_ports, protocol, zone, check_for_aliases)
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# File '../../src/modules/SuSEFirewall.rb', line 2082 def ArePortsOrServicesAllowed(needed_ports, protocol, zone, check_for_aliases) needed_ports = deep_copy(needed_ports) are_allowed = true if Ops.less_than(Builtins.size(needed_ports), 1) Builtins.y2warning( "Undefined list of %1 services/ports for service", protocol ) return true end allowed_ports = {} # BTW: only TCP and UDP ports can have aliases and only TCP and UDP ports can have port ranges if check_for_aliases allowed_ports = PortRanges.DividePortsAndPortRanges( GetAllowedServicesForZoneProto(zone, protocol), true ) else Ops.set( allowed_ports, "ports", GetAllowedServicesForZoneProto(zone, protocol) ) end Builtins.foreach(needed_ports) do |needed_port| if !Builtins.contains(Ops.get(allowed_ports, "ports", []), needed_port) && !PortRanges.PortIsInPortranges( needed_port, Ops.get(allowed_ports, "port_ranges", []) ) are_allowed = false raise Break end end are_allowed end |
- (Object) CheckKernelModules
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# File '../../src/modules/SuSEFirewall.rb', line 3576 def CheckKernelModules needs_additional_module = false Builtins.foreach(GetKnownFirewallZones()) do |one_zone| if Ops.greater_or_equal( Builtins.size(GetServicesAcceptRelated(one_zone)), 0 ) Builtins.y2milestone("Some ServicesAcceptRelated are defined") needs_additional_module = true raise Break end end if needs_additional_module k_modules = Builtins.splitstring( Ops.get_string(@SETTINGS, "FW_LOAD_MODULES", ""), " " ) if !Builtins.contains(k_modules, @broadcast_related_module) Builtins.y2warning( "FW_LOAD_MODULES doesn't contain %1, adding", @broadcast_related_module ) k_modules = Builtins.add(k_modules, @broadcast_related_module) Ops.set( @SETTINGS, "FW_LOAD_MODULES", Builtins.mergestring(k_modules, " ") ) SetModified() end end nil end |
- (Object) ConvertToServicesDefinedByPackages
Converts old built-in service definitions to services defined by packages.
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# File '../../src/modules/SuSEFirewall.rb', line 3663 def ConvertToServicesDefinedByPackages return if @already_converted if FileUtils.Exists(@converted_to_services_dbp_file) @already_converted = true return end # $[ zone : $[ protocol : [ list of ports ] ] ] current_conf = {} Builtins.foreach(GetKnownFirewallZones()) do |zone| Ops.set(current_conf, zone, {}) Builtins.foreach(@supported_protocols) do |protocol| Ops.set( current_conf, [zone, protocol], GetAllowedServicesForZoneProto(zone, protocol) ) Ops.set( current_conf, [zone, "broadcast"], Builtins.splitstring(GetBroadcastConfiguration(zone), " \n") ) end end Builtins.y2milestone("Current conf: %1", current_conf) Builtins.foreach(GetKnownFirewallZones()) do |zone| Builtins.foreach(SuSEFirewallServices.OLD_SERVICES) do |old_service_id, old_service_def| Builtins.y2milestone("Checking %1 in %2 zone", old_service_id, zone) if Ops.get_list(old_service_def, "tcp_ports", []) != [] && ArePortsOrServicesAllowed( Ops.get_list(old_service_def, "tcp_ports", []), "TCP", zone, true ) != true next end if Ops.get_list(old_service_def, "udp_ports", []) != [] && ArePortsOrServicesAllowed( Ops.get_list(old_service_def, "udp_ports", []), "UDP", zone, true ) != true next end if Ops.get_list(old_service_def, "rpc_ports", []) != [] && ArePortsOrServicesAllowed( Ops.get_list(old_service_def, "rpc_ports", []), "RPC", zone, false ) != true next end if Ops.get_list(old_service_def, "ip_protocols", []) != [] && ArePortsOrServicesAllowed( Ops.get_list(old_service_def, "ip_protocols", []), "IP", zone, false ) != true next end if Ops.get_list(old_service_def, "broadcast_ports", []) != [] && IsBroadcastAllowed( Ops.get_list(old_service_def, "broadcast_ports", []), zone ) != true next end if Ops.get_list(old_service_def, "convert_to", []) == [] Builtins.y2milestone( "Service %1 supported, but it doesn't have any replacement", old_service_id ) next end replaced = false Builtins.foreach(Ops.get_list(old_service_def, "convert_to", [])) do |replacement| if SuSEFirewallServices.IsKnownService(replacement) Builtins.y2milestone( "Old service %1 matches %2", old_service_id, replacement ) RemoveOldAllowedServiceFromZone(old_service_def, zone) SetServicesForZones([replacement], [zone], true) replaced = true raise Break end end if !replaced Builtins.y2warning( "Old service %1 matches %2 but none are installed", old_service_id, Ops.get_list(old_service_def, "convert_to", []) ) end end end Builtins.y2milestone("Converting done") @already_converted = true nil end |
- (Object) DecreaseVerbosity
Local function for decreasing the verbosity level.
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# File '../../src/modules/SuSEFirewall.rb', line 336 def DecreaseVerbosity @verbose_level = Ops.subtract(@verbose_level, 1) nil end |
- (Boolean) DisableServices
Functions disables services needed for SuSEFirewall in /etc/inet.d/
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# File '../../src/modules/SuSEFirewall.rb', line 1394 def DisableServices return false if !SuSEFirewallIsInstalled() if Service.Disable(@firewall_service) return true else # TRANSLATORS: a popup error message Report.LongError(Service.Error) return false end end |
- (Boolean) EnableServices
Functions enables services needed for SuSEFirewall in /etc/inet.d/
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# File '../../src/modules/SuSEFirewall.rb', line 1377 def EnableServices all_ok = true return false if !SuSEFirewallIsInstalled() if !Service.Enable(@firewall_service) all_ok = true # TRANSLATORS: a popup error message Report.LongError(Service.Error) end all_ok end |
- (Hash{String => Object}) Export
Function for getting exported SuSEFirewall configuration
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# File '../../src/modules/SuSEFirewall.rb', line 1446 def Export deep_copy(@SETTINGS) end |
- (Object) FillUpEmptyConfig
Fills the configuration with default settings, adjusts internal variables that firewall cannot be configured.
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# File '../../src/modules/SuSEFirewall.rb', line 2439 def FillUpEmptyConfig # do not call it again @configuration_has_been_read = true # Default settings, services are disabled @SETTINGS = deep_copy(@DEFAULT_SETTINGS) Ops.set(@SETTINGS, "enable_firewall", false) Ops.set(@SETTINGS, "start_firewall", false) # Cannot be configured, packages weren't installed @fw_service_can_be_configured = false nil end |
- (String) GetAcceptExpertRules(zone)
Returns list of rules describing protocols and ports that are allowed to be accessed from listed hosts. All is returned as a single string. Zone needs to be defined.
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# File '../../src/modules/SuSEFirewall.rb', line 3408 def GetAcceptExpertRules(zone) zone = Builtins.toupper(zone) # Check for zone if !Builtins.contains(GetKnownFirewallZones(), zone) Builtins.y2error("Unknown firewall zone: %1", zone) return nil end Ops.get_string(@SETTINGS, Ops.add("FW_SERVICES_ACCEPT_", zone), "") end |
- (Array<String>) GetAdditionalServices(protocol, zone)
This powerful function returns list of services/ports which are not assigned to any fully-supported known-services. This function doesn't check for services defined by packages. They are listed by a different way.
GetAdditionalServices(“TCP”, “EXT”) -> [“53”, “128”]
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# File '../../src/modules/SuSEFirewall.rb', line 2806 def GetAdditionalServices(protocol, zone) additional_services = [] if !IsSupportedProtocol(protocol) Builtins.y2error("Unknown protocol '%1'", protocol) return nil end if !IsKnownZone(zone) Builtins.y2error("Unknown zone '%1'", zone) return nil end # all ports or services allowed in zone for protocol all_allowed_services = GetAllowedServicesForZoneProto(zone, protocol) # all ports or services used by known service all_used_services = [] # trying all possible (known) services Builtins.foreach(SuSEFirewallServices.GetSupportedServices) do |service_id, service_name| # only when the service is allowed in zone - remove all its needed ports if IsServiceSupportedInZone(service_id, zone) == true # all needed ports etc for service/protocol needed_all = [] if protocol == "TCP" needed_all = SuSEFirewallServices.GetNeededTCPPorts(service_id) elsif protocol == "UDP" needed_all = SuSEFirewallServices.GetNeededUDPPorts(service_id) elsif protocol == "RPC" needed_all = SuSEFirewallServices.GetNeededRPCPorts(service_id) elsif protocol == "IP" needed_all = SuSEFirewallServices.GetNeededIPProtocols(service_id) end Builtins.foreach(needed_all) do |remove_port| # all used services and their aliases all_used_services = Convert.convert( Builtins.union( all_used_services, PortAliases.GetListOfServiceAliases(remove_port) ), :from => "list", :to => "list <string>" ) end end end # some services are used by known defined-services if Ops.greater_than(Builtins.size(all_used_services), 0) all_used_services = Builtins.toset(all_used_services) # removing all used services from all allowed all_allowed_services = Builtins.filter(all_allowed_services) do |port| !Builtins.contains(all_used_services, port) end end # well, actually it returns list of services not-assigned to any well-known service deep_copy(all_allowed_services) end |
- (Array<String>) GetAllDialUpInterfaces
Function returns list of dial-up interfaces.
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# File '../../src/modules/SuSEFirewall.rb', line 1677 def GetAllDialUpInterfaces dial_up_interfaces = [] Builtins.foreach(GetAllKnownInterfaces()) do |interface| if Ops.get(interface, "type") == "dial_up" dial_up_interfaces = Builtins.add( dial_up_interfaces, Ops.get(interface, "id", "") ) end end deep_copy(dial_up_interfaces) end |
- (Array<Hash{String => String>}) GetAllKnownInterfaces
Function returns list of maps of known interfaces.
Structure:
[ $[ "id":"modem0", "name":"Askey 815C", "type":"dialup", "zone":"EXT" ], ... ]
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# File '../../src/modules/SuSEFirewall.rb', line 1581 def GetAllKnownInterfaces known_interfaces = [] # All dial-up interfaces dialup_interfaces = NetworkInterfaces.List("dialup") dialup_interfaces = [] if dialup_interfaces == nil # bugzilla #303858 - wrong values from NetworkInterfaces dialup_interfaces = Builtins.filter(dialup_interfaces) do |one_iface| if one_iface == nil || one_iface == "" Builtins.y2error("Wrong interface definition '%1'", one_iface) next false end true end dialup_interfaces = Builtins.filter(dialup_interfaces) do |interface| interface != "" && !Builtins.issubstring(interface, "lo") && !Builtins.issubstring(interface, "sit") end # All non-dial-up interfaces non_dialup_interfaces = NetworkInterfaces.List("") non_dialup_interfaces = [] if non_dialup_interfaces == nil # bugzilla #303858 - wrong values from NetworkInterfaces non_dialup_interfaces = Builtins.filter(non_dialup_interfaces) do |one_iface| if one_iface == nil || one_iface == "" Builtins.y2error("Wrong interface definition '%1'", one_iface) next false end true end non_dialup_interfaces = Builtins.filter(non_dialup_interfaces) do |interface| interface != "" && !Builtins.issubstring(interface, "lo") && !Builtins.issubstring(interface, "sit") && !Builtins.contains(dialup_interfaces, interface) end Builtins.foreach(dialup_interfaces) do |interface| known_interfaces = Builtins.add( known_interfaces, { "id" => interface, "type" => "dialup", # using function to get name "name" => NetworkInterfaces.GetValue( interface, "NAME" ), "zone" => GetZoneOfInterface(interface) } ) end Builtins.foreach(non_dialup_interfaces) do |interface| known_interfaces = Builtins.add( known_interfaces, { "id" => interface, # using function to get name "name" => NetworkInterfaces.GetValue( interface, "NAME" ), "zone" => GetZoneOfInterface(interface) } ) end deep_copy(known_interfaces) end |
- (Array<String>) GetAllNonDialUpInterfaces
Function returns list of non-dial-up interfaces.
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# File '../../src/modules/SuSEFirewall.rb', line 1659 def GetAllNonDialUpInterfaces non_dial_up_interfaces = [] Builtins.foreach(GetAllKnownInterfaces()) do |interface| if Ops.get(interface, "type") != "dial_up" non_dial_up_interfaces = Builtins.add( non_dial_up_interfaces, Ops.get(interface, "id", "") ) end end deep_copy(non_dial_up_interfaces) end |
- (Array<String>) GetAllowedServicesForZoneProto(zone, protocol)
Function returns list of allowed services for zone and protocol
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# File '../../src/modules/SuSEFirewall.rb', line 504 def GetAllowedServicesForZoneProto(zone, protocol) Builtins.splitstring( Ops.get_string( @SETTINGS, Ops.add(Ops.add(Ops.add("FW_SERVICES_", zone), "_"), protocol), "" ), " " ) end |
- (Hash{String => Array<String>}) GetBroadcastAllowedPorts
Local function return map of allowed ports (without aliases). If any list for zone is defined but empty, all allowed UDP ports for this zone also accept broadcast packets. This function returns only ports that are mentioned in configuration, it doesn't return ports that are listed in some service (defined by package) which is enabled.
Structure:
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# File '../../src/modules/SuSEFirewall.rb', line 578 def GetBroadcastAllowedPorts allowed_ports = {} Builtins.foreach(GetKnownFirewallZones()) do |zone| broadcast = GetBroadcastConfiguration(zone) # no broadcast allowed for this zone if broadcast == "no" Ops.set(allowed_ports, zone, []) # BNC #694782: "yes" is automatically translated by SuSEfirewall2 elsif broadcast == "yes" Ops.set(allowed_ports, zone, ["yes"]) # only listed ports allows broadcast else Ops.set(allowed_ports, zone, Builtins.splitstring(broadcast, " ")) Ops.set( allowed_ports, zone, Builtins.filter(Builtins.splitstring(broadcast, " ")) do |not_space| not_space != "" end ) end end Builtins.y2debug("Allowed Broadcast Ports: %1", allowed_ports) deep_copy(allowed_ports) end |
- (String) GetBroadcastConfiguration(zone)
Local function returns configuration string for broadcast packets.
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# File '../../src/modules/SuSEFirewall.rb', line 536 def GetBroadcastConfiguration(zone) Ops.get_string(@SETTINGS, Ops.add("FW_ALLOW_FW_BROADCAST_", zone), "no") end |
- (String) GetConfigurationStringZone(zone_string)
Local function returns zone name (shortname) for configuration string. For instance "EXT" for "ext" zone.
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# File '../../src/modules/SuSEFirewall.rb', line 491 def GetConfigurationStringZone(zone_string) if IsKnownZone(Builtins.toupper(zone_string)) # zones in SuSEFirewall configuration are identified by lowercased zone shorters return Builtins.toupper(zone_string) end nil end |
- (String) GetDefaultValue(variable)
Local function for returning default values (if defined) for sysconfig variables.
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# File '../../src/modules/SuSEFirewall.rb', line 355 def GetDefaultValue(variable) Ops.get(@DEFAULT_SETTINGS, variable, "") end |
- (Boolean) GetEnableService
Function which returns whether SuSEfirewall should be enabled in /etc/init.d/ starting scripts during the Write() process
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# File '../../src/modules/SuSEFirewall.rb', line 1310 def GetEnableService Ops.get_boolean(@SETTINGS, "enable_firewall", false) end |
- (Array<String>) GetFirewallInterfaces
Function returns all interfaces already configured in firewall.
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# File '../../src/modules/SuSEFirewall.rb', line 1804 def GetFirewallInterfaces firewall_configured_devices = [] Builtins.foreach(GetKnownFirewallZones()) do |zone| firewall_configured_devices = Convert.convert( Builtins.union(firewall_configured_devices, GetInterfacesInZone(zone)), :from => "list", :to => "list <string>" ) end Builtins.toset(firewall_configured_devices) end |
- (Hash{String => Array<String>}) GetFirewallInterfacesMap
Function returns map of interfaces in zones
.
Structure:
map $[zone : [list of interfaces]]
GetFirewallInterfacesMap() -> $[“DMZ”:[], “EXT”:, “INT”:[“eth1”, “eth2”]]
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# File '../../src/modules/SuSEFirewall.rb', line 2991 def GetFirewallInterfacesMap firewall_interfaces_now = {} # list of all known interfaces known_interfaces = GetListOfKnownInterfaces() # searching each zone Builtins.foreach(GetKnownFirewallZones()) do |zone| # filtering non-existing interfaces Ops.set( firewall_interfaces_now, zone, Builtins.filter(GetInterfacesInZone(zone)) do |interface| Builtins.contains(known_interfaces, interface) end ) end deep_copy(firewall_interfaces_now) end |
- (Array<String>) GetFirewallKernelModules
Returns list of additional kernel modules, that are loaded by firewall on startup. For instance "ip_conntrack_ftp" and "ip_nat_ftp" for FTP service.
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# File '../../src/modules/SuSEFirewall.rb', line 3446 def GetFirewallKernelModules k_modules = Builtins.splitstring( Ops.get_string(@SETTINGS, "FW_LOAD_MODULES", ""), " \t\n" ) k_modules = Builtins.filter(k_modules) { |one_module| one_module != "" } Builtins.toset(k_modules) end |
- (String) GetIgnoreLoggingBroadcast(zone)
Function returns yes/no - ingoring broadcast for zone
// Does not logg ignored broadcast packets GetIgnoreLoggingBroadcast ("EXT") -> "yes"
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# File '../../src/modules/SuSEFirewall.rb', line 3357 def GetIgnoreLoggingBroadcast(zone) if !IsKnownZone(zone) Builtins.y2error("Unknown zone '%1'", zone) return nil end Ops.get_string(@SETTINGS, Ops.add("FW_IGNORE_FW_BROADCAST_", zone), "no") end |
- (Array<String>) GetInterfacesInZone(zone)
Function returns list of known interfaces in requested zone. Special strings like 'any' or 'auto' and unknown interfaces are removed from list.
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# File '../../src/modules/SuSEFirewall.rb', line 1785 def GetInterfacesInZone(zone) interfaces_in_zone = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) known_interfaces_now = GetListOfKnownInterfaces() # filtering special strings interfaces_in_zone = Builtins.filter(interfaces_in_zone) do |interface| interface != "" && Builtins.contains(known_interfaces_now, interface) end deep_copy(interfaces_in_zone) end |
- (Array<String>) GetInterfacesInZoneSupportingAnyFeature(zone)
Function returns list of known interfaces in requested zone. Special string 'any' in EXT zone covers all interfaces without any zone assignment.
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# File '../../src/modules/SuSEFirewall.rb', line 1853 def GetInterfacesInZoneSupportingAnyFeature(zone) interfaces_in_zone = GetInterfacesInZone(zone) # 'any' in EXT zone, add all interfaces without zone to this one interfaces_covered_by_any = InterfacesSupportedByAnyFeature(zone) if Ops.greater_than(Builtins.size(interfaces_covered_by_any), 0) interfaces_in_zone = Convert.convert( Builtins.union(interfaces_in_zone, interfaces_covered_by_any), :from => "list", :to => "list <string>" ) end deep_copy(interfaces_in_zone) end |
- (Array<String>) GetKnownFirewallZones
Function returns list of known firewall zones (shortnames)
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# File '../../src/modules/SuSEFirewall.rb', line 282 def GetKnownFirewallZones deep_copy(@known_firewall_zones) end |
- (Array<Hash{String => String>}) GetListOfForwardsIntoMasquerade
Function returns list of rules of forwarding ports to masqueraded IPs.
Structure:
list [$[ key: value ]]
GetListOfForwardsIntoMasquerade() -> [ $[ “forward_to”:“172.24.233.1”, “protocol”:“tcp”, “req_ip”:“192.168.0.3”, “req_port”:“355”, “source_net”:“192.168.0.0/20”, “to_port”:“533”], … ]
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# File '../../src/modules/SuSEFirewall.rb', line 3135 def GetListOfForwardsIntoMasquerade list_of_rules = [] Builtins.foreach( Builtins.splitstring( Ops.get_string(@SETTINGS, "FW_FORWARD_MASQ", ""), " " ) ) do |forward_rule| next if forward_rule == "" # Format: <source network>,<ip to forward to>,<protocol>,<port>[,redirect port,[destination ip]] fw_rul = Builtins.splitstring(forward_rule, ",") # first four parameters has to be defined if Ops.get(fw_rul, 0, "") == "" || Ops.get(fw_rul, 1, "") == "" || Ops.get(fw_rul, 2, "") == "" || Ops.get(fw_rul, 3, "") == "" Builtins.y2warning( "Wrong definition of redirect rule: '%1', part of '%2'", forward_rule, Ops.get_string(@SETTINGS, "FW_FORWARD_MASQ", "") ) end list_of_rules = Builtins.add( list_of_rules, { "source_net" => Ops.get(fw_rul, 0, ""), "forward_to" => Ops.get(fw_rul, 1, ""), "protocol" => Builtins.tolower(Ops.get(fw_rul, 2, "")), "req_port" => Builtins.tolower(Ops.get(fw_rul, 3, "")), # to_port is req_port when undefined "to_port" => Builtins.tolower( Ops.get(fw_rul, 4, Ops.get(fw_rul, 3, "")) ), "req_ip" => Builtins.tolower(Ops.get(fw_rul, 5, "")) } ) end deep_copy(list_of_rules) end |
- (Array<String>) GetListOfKnownInterfaces
Function returns list of all known interfaces.
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# File '../../src/modules/SuSEFirewall.rb', line 1695 def GetListOfKnownInterfaces interfaces = [] Builtins.foreach(GetAllKnownInterfaces()) do |interface_map| interfaces = Builtins.add( interfaces, Ops.get_string(interface_map, "id", "") ) end deep_copy(interfaces) end |
- (Array<String>) GetListOfSuSEFirewallVariables
Function return list of variables needed for SuSEFirewall's settings.
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# File '../../src/modules/SuSEFirewall.rb', line 324 def GetListOfSuSEFirewallVariables deep_copy(@SuSEFirewall_variables) end |
- (String) GetLoggingSettings(rule)
Function returns actual state of logging for rule taken as parameter.
GetLoggingSettings(“ACCEPT”) -> “CRIT” GetLoggingSettings("DROP") -> "CRIT"
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# File '../../src/modules/SuSEFirewall.rb', line 3283 def GetLoggingSettings(rule) ret_val = nil if rule == "ACCEPT" if Ops.get_string(@SETTINGS, "FW_LOG_ACCEPT_ALL", "no") == "yes" ret_val = "ALL" elsif Ops.get_string(@SETTINGS, "FW_LOG_ACCEPT_CRIT", "yes") == "yes" ret_val = "CRIT" else ret_val = "NONE" end elsif rule == "DROP" if Ops.get_string(@SETTINGS, "FW_LOG_DROP_ALL", "no") == "yes" ret_val = "ALL" elsif Ops.get_string(@SETTINGS, "FW_LOG_DROP_CRIT", "yes") == "yes" ret_val = "CRIT" else ret_val = "NONE" end else Builtins.y2error("Possible rules are only 'ACCEPT' or 'DROP'") end ret_val end |
- (Boolean) GetMasquerade
Function returns actual state of Masquerading support.
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# File '../../src/modules/SuSEFirewall.rb', line 3095 def GetMasquerade Ops.get_string(@SETTINGS, "FW_MASQUERADE", "no") == "yes" && Ops.get_string(@SETTINGS, "FW_ROUTE", "no") == "yes" end |
- (Boolean) GetModified
Functions returns whether any firewall's configuration was modified.
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# File '../../src/modules/SuSEFirewall.rb', line 1132 def GetModified # Changed SuSEFirewall or # Changed SuSEFirewallServices (needs resatrting as well) @modified || SuSEFirewallServices.GetModified end |
- (Boolean) GetProtectFromInternalZone
Function returns if firewall is protected from internal zone.
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# File '../../src/modules/SuSEFirewall.rb', line 1178 def GetProtectFromInternalZone Ops.get_string(@SETTINGS, "FW_PROTECT_FROM_INT", "no") == "yes" end |
- (String) GetProtocolTranslatedName(protocol)
Returns translated protocol name. Translation is provided from SuSEfirewall2 sysconfig format to l10n format.
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# File '../../src/modules/SuSEFirewall.rb', line 3505 def GetProtocolTranslatedName(protocol) protocol = Builtins.tolower(protocol) if protocol == "" return "" elsif Ops.get(@protocol_translations, protocol) == nil Builtins.y2error("Unknown protocol: %1", protocol) # table item, %1 stands for the buggy protocol name return Builtins.sformat(_("Unknown protocol (%1)"), protocol) else return Ops.get(@protocol_translations, protocol, "") end end |
- (Hash <String, Hash{String => Boolean>}) GetServices(services)
Function returns map of supported services in all firewall zones.
Structure:
Returns $[service : $[ zone_name : supported_status]]
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# File '../../src/modules/SuSEFirewall.rb', line 2308 def GetServices(services) services = deep_copy(services) # $[ service : $[ firewall_zone : status ]] services_status = {} # for all services requested Builtins.foreach(services) do |service| Ops.set(services_status, service, {}) # for all zones in configuration Builtins.foreach(GetKnownFirewallZones()) do |zone| Ops.set( services_status, [service, zone], IsServiceSupportedInZone(service, zone) ) end end deep_copy(services_status) end |
- (Array<String>) GetServicesAcceptRelated(zone)
Returns list of FW_SERVICES_ACCEPT_RELATED_*: Services to allow that are considered RELATED by the connection tracking engine, e.g., SLP browsing reply or Samba browsing reply.
GetServicesAcceptRelated (“EXT”) -> [“0/0,udp,427”, “0/0,udp,137”]
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# File '../../src/modules/SuSEFirewall.rb', line 3530 def GetServicesAcceptRelated(zone) if !IsKnownZone(zone) Builtins.y2error("Uknown zone '%1'", zone) return [] end Builtins.splitstring( Ops.get_string( @SETTINGS, Ops.add("FW_SERVICES_ACCEPT_RELATED_", zone), "" ), " \t\n" ) end |
- (Hash <String, Hash{String => Boolean} >) GetServicesInZones(services)
Function returns map of supported services all network interfaces.
Structure:
Returns $[service : $[ interface : supported_status ]]
GetServicesInZones ([“service:irc-server”]) -> $[“service:irc-server”:$] // No such service "something" GetServicesInZones (["something"])) -> $["something":$] GetServicesInZones (["samba-server"]) -> $["samba-server":$]
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# File '../../src/modules/SuSEFirewall.rb', line 2255 def GetServicesInZones(services) services = deep_copy(services) # list of interfaces for each zone interface_in_zone = {} Builtins.foreach(GetListOfKnownInterfaces()) do |interface| # zone of interface zone_used = GetZoneOfInterface(interface) # interface can be unassigned next if zone_used == nil || zone_used == "" Ops.set( interface_in_zone, zone_used, Builtins.add(Ops.get(interface_in_zone, zone_used, []), interface) ) end # $[ service : $[ network_interface : status ]] services_status = {} # for all services requested Builtins.foreach(services) do |service| Ops.set(services_status, service, {}) # for all zones in configuration Builtins.foreach(interface_in_zone) do |zone, interfaces| status = IsServiceSupportedInZone(service, zone) # for all interfaces in zone Builtins.foreach(interfaces) do |interface| Ops.set(services_status, [service, interface], status) end end end deep_copy(services_status) end |
- (Array<String>) GetSpecialInterfacesInZone(zone)
Function returns list of special strings like 'any' or 'auto' and uknown interfaces.
GetSpecialInterfacesInZone(“EXT”) -> [“any”, “unknown-1”, “wrong-3”]
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# File '../../src/modules/SuSEFirewall.rb', line 3019 def GetSpecialInterfacesInZone(zone) interfaces_in_zone = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) known_interfaces_now = GetInterfacesInZone(zone) # filtering known interfaces and spaces interfaces_in_zone = Builtins.filter(interfaces_in_zone) do |interface| interface != "" && !Builtins.contains(known_interfaces_now, interface) end deep_copy(interfaces_in_zone) end |
- (Boolean) GetStartService
Function which returns if SuSEfirewall2 should start in Write process. In fact it means that SuSEfirewall2 will at the end.
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# File '../../src/modules/SuSEFirewall.rb', line 1272 def GetStartService Ops.get_boolean(@SETTINGS, "start_firewall", false) end |
- (Boolean) GetSupportRoute
Function returns if firewall supports routing.
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# File '../../src/modules/SuSEFirewall.rb', line 1200 def GetSupportRoute Ops.get_string(@SETTINGS, "FW_ROUTE", "no") == "yes" end |
- (String) GetTrustIPsecAs
Function returns the trust level of IPsec packets. See SetTrustIPsecAs() for more information.
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# File '../../src/modules/SuSEFirewall.rb', line 1239 def GetTrustIPsecAs # do not trust if Ops.get(@SETTINGS, "FW_IPSEC_TRUST") == "no" return "no" # default value for 'yes" ~= "INT" elsif Ops.get(@SETTINGS, "FW_IPSEC_TRUST") == "yes" return "INT" else zone = GetConfigurationStringZone( Ops.get_string(@SETTINGS, "FW_IPSEC_TRUST", "") ) # trust as named zone (if known) if IsKnownZone(zone) return zone # unknown zone, change to default value else SetModified() defaultv = GetDefaultValue("FW_IPSEC_TRUST") Builtins.y2warning( "Trust IPsec as '%1' (unknown zone) changed to '%2'", Ops.get_string(@SETTINGS, "FW_IPSEC_TRUST", ""), defaultv ) SetTrustIPsecAs(defaultv) return "no" end end end |
- (String) GetZoneConfigurationString(zone)
Local function returns configuration string used in configuration for zone. For instance "ext" for "EXT" zone.
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# File '../../src/modules/SuSEFirewall.rb', line 478 def GetZoneConfigurationString(zone) if IsKnownZone(zone) # zones in SuSEFirewall configuration are identified by lowercased zone shorters return Builtins.tolower(zone) end nil end |
- (String) GetZoneFullName(zone)
Function returns localized name of the zone identified by zone shortname.
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# File '../../src/modules/SuSEFirewall.rb', line 1155 def GetZoneFullName(zone) # TRANSLATORS: Firewall zone full-name, used as combo box item or dialog title Ops.get(@zone_names, zone, _("Unknown Zone")) end |
- (String) GetZoneOfInterface(interface)
Function returns the firewall zone of interface, nil if no zone includes the interface. Error is reported when interface is found in multiple firewall zones, then the first appearance is returned.
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# File '../../src/modules/SuSEFirewall.rb', line 1485 def GetZoneOfInterface(interface) interface_zone = [] Builtins.foreach(GetKnownFirewallZones()) do |zone| if IsInterfaceInZone(interface, zone) interface_zone = Builtins.add(interface_zone, zone) end end # Fallback handling for 'any' in the FW_DEV_* configuration if interface == @special_all_interface_string && Builtins.size(interface_zone) == 0 interface_zone = [@special_all_interface_zone] end if IsVerbose() && Ops.greater_than(Builtins.size(interface_zone), 1) # TRANSLATORS: Error message, %1 = interface name (like eth0) Report.Error( Builtins.sformat( _( "Interface '%1' is included in multiple firewall zones.\n" + "Continuing with configuration can produce errors.\n" + "\n" + "It is recommended to leave the configuration and repair it manually in\n" + "the file '/etc/sysconfig/SuSEFirewall'." ), interface ) ) end # return the first existence of interface in zones # if it is not presented anywhere, nil is returned Ops.get_string(interface_zone, 0) end |
- (Array<String>) GetZonesOfInterfaces(interfaces)
Function returns list of zones of requested interfaces
GetZonesOfInterfaces ([“eth1”,“eth4”]) -> [“DMZ”, “EXT”]
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# File '../../src/modules/SuSEFirewall.rb', line 1528 def GetZonesOfInterfaces(interfaces) interfaces = deep_copy(interfaces) zones = [] zone = "" Builtins.foreach(interfaces) do |interface| zone = GetZoneOfInterface(interface) zones = Builtins.add(zones, zone) if zone != nil end Builtins.toset(zones) end |
- (Array<String>) GetZonesOfInterfacesWithAnyFeatureSupported(interfaces)
Function returns list of zones of requested interfaces. Special string 'any' in 'EXT' zone is supported.
GetZonesOfInterfaces ([“eth1”,“eth4”]) -> [“EXT”]
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# File '../../src/modules/SuSEFirewall.rb', line 1549 def GetZonesOfInterfacesWithAnyFeatureSupported(interfaces) interfaces = deep_copy(interfaces) zones = [] zone = "" # 'any' in 'EXT' interfaces_covered_by_any = GetInterfacesInZoneSupportingAnyFeature( @special_all_interface_zone ) Builtins.foreach(interfaces) do |interface| # interface is covered by 'any' in 'EXT' if Builtins.contains(interfaces_covered_by_any, interface) zone = @special_all_interface_zone else # interface is explicitely mentioned in some zone zone = GetZoneOfInterface(interface) end zones = Builtins.add(zones, zone) if zone != nil end Builtins.toset(zones) end |
- (Boolean) HaveService(service, protocol, interface)
Function returns if requested service is allowed in respective zone. Function takes care for service's aliases (only for TCP and UDP). Service is defined by set of parameters such as port and protocol.
HaveService (“ssh”, “TCP”, “EXT”) -> true HaveService ("ssh", "TCP", "modem0") -> false HaveService ("53", "UDP", "dsl") -> false
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# File '../../src/modules/SuSEFirewall.rb', line 1882 def HaveService(service, protocol, interface) if !IsSupportedProtocol(protocol) Builtins.y2error("Unknown protocol: %1", protocol) return nil end # definition of searched zones zones = [] # "any" for all zones, this is ugly if interface == "any" zones = GetKnownFirewallZones() # string interface is the zone name elsif IsKnownZone(interface) zones = Builtins.add(zones, interface) # interface is the interface name else interface = GetZoneOfInterface(interface) zones = Builtins.add(zones, interface) if interface != nil end # SuSEFirewall feature FW_PROTECT_FROM_INT # should not be protected and searched zones include also internal (or the zone IS internal, sure) if !GetProtectFromInternalZone() && Builtins.contains(zones, @int_zone_shortname) Builtins.y2milestone( "Checking for service '%1', in '%2', PROTECT_FROM_INTERNAL='no' => allowed", service, interface ) return true end # Check and return whether the service (port) is supported anywhere ret = false Builtins.foreach(zones) do |zone| # This function can also handle port ranges if ArePortsOrServicesAllowed([service], protocol, zone, true) ret = true raise Break end end ret end |
- (Object) Import(import_settings)
Function for setting SuSEFirewall configuration from input
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# File '../../src/modules/SuSEFirewall.rb', line 1453 def Import(import_settings) import_settings = deep_copy(import_settings) SetModified() @SETTINGS = deep_copy(import_settings) nil end |
- (Object) IncreaseVerbosity
Local function for increasing the verbosity level.
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# File '../../src/modules/SuSEFirewall.rb', line 329 def IncreaseVerbosity @verbose_level = Ops.add(@verbose_level, 1) nil end |
- (Array<String>) InterfacesSupportedByAnyFeature(zone)
Returns list of interfaces not mentioned in any zone and covered by the special string 'any' in zone 'EXT' if such string exists there and the zone is EXT. If the feature 'any' is not set, function returns empty list.
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# File '../../src/modules/SuSEFirewall.rb', line 1825 def InterfacesSupportedByAnyFeature(zone) result = [] if zone == @special_all_interface_zone && IsAnyNetworkInterfaceSupported() known_interfaces_now = GetListOfKnownInterfaces() configured_interfaces = GetFirewallInterfaces() Builtins.foreach(known_interfaces_now) do |one_interface| if !Builtins.contains(configured_interfaces, one_interface) Builtins.y2milestone( "Interface '%1' supported by special string '%2' in zone '%3'", one_interface, @special_all_interface_string, @special_all_interface_zone ) result = Builtins.add(result, one_interface) end end end deep_copy(result) end |
- (Boolean) IsAnyNetworkInterfaceSupported
Function returns whether the feature 'any' network interface is supported in the firewall configuration. The string 'any' must be in the 'EXT' zone. Updated: Currently returns only 'true' as every unasigned interface is automatically assigned to the EXT zone by SuSEfirewall2.
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# File '../../src/modules/SuSEFirewall.rb', line 316 def IsAnyNetworkInterfaceSupported # Currently unasigned interfaces belong to the EXT zone by dafault true end |
- (Boolean) IsBroadcastAllowed(needed_ports, zone)
Function returns if broadcast is allowed for needed ports in zone.
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# File '../../src/modules/SuSEFirewall.rb', line 633 def IsBroadcastAllowed(needed_ports, zone) needed_ports = deep_copy(needed_ports) if Builtins.size(needed_ports) == 0 Builtins.y2warning("Unknown service with no needed ports!") return nil end # getting broadcast allowed ports allowed_ports_map = GetBroadcastAllowedPorts() # Divide allowed port ranges and aliases (also with their port aliases) allowed_ports_divided = PortRanges.DividePortsAndPortRanges( Ops.get(allowed_ports_map, zone, []), true ) # If there are no allowed ports at all if Ops.get(allowed_ports_divided, "ports", []) == [] && Ops.get(allowed_ports_divided, "port_ranges", []) == [] return false end # clean up the memory a bit allowed_ports_map = nil is_allowed = true # checking all needed ports; Builtins.foreach(needed_ports) do |needed_port| # allowed ports don't contain the needed one and also portranges don't if !Builtins.contains( Ops.get(allowed_ports_divided, "ports", []), needed_port ) && !PortRanges.PortIsInPortranges( needed_port, Ops.get(allowed_ports_divided, "port_ranges", []) ) is_allowed = false raise Break end end is_allowed end |
- (Boolean) IsEnabled
Function determines if all SuSEFirewall scripts are enabled in init scripts /etc/init.d/ now. For configuration "enabled" status use GetEnableService().
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# File '../../src/modules/SuSEFirewall.rb', line 1412 def IsEnabled return false if !SuSEFirewallIsInstalled() if Service.Enabled(@firewall_service) Builtins.y2milestone("Firewall service is enabled") return true else Builtins.y2milestone("Firewall service is not enabled") return false end end |
- (Boolean) IsInterfaceInZone(interface, zone)
Function returns if the interface is in zone.
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# File '../../src/modules/SuSEFirewall.rb', line 1469 def IsInterfaceInZone(interface, zone) interfaces = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) Builtins.contains(interfaces, interface) end |
- (Boolean) IsKnownZone(zone)
Local function returns if zone (shortname like “EXT”) is supported by firewall. Undefined zones are, for sure, unsupported.
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# File '../../src/modules/SuSEFirewall.rb', line 460 def IsKnownZone(zone) is_zone = false Builtins.foreach(GetKnownFirewallZones()) do |known_zone| if known_zone == zone is_zone = true raise Break end end is_zone end |
- (Boolean) IsOtherFirewallRunning
Function returns if any other firewall then SuSEfirewall2 is currently
running on the
system. It uses command iptables
to get
information about just active iptables
rules and compares the output with
current status of SuSEfirewall2.
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# File '../../src/modules/SuSEFirewall.rb', line 2930 def IsOtherFirewallRunning any_firewall_running = true # grep must return at least blank lines, else it returns 'exit 1' instead of 'exit 0' command = "iptables -L -n | grep -v \"^\\(Chain\\|target\\)\"" iptables = Convert.to_map( SCR.Execute(path(".target.bash_output"), command) ) if Ops.get_integer(iptables, "exit", 0) == 0 iptables_list = Builtins.splitstring( Ops.get_string(iptables, "stdout", ""), "\n" ) iptables_list = Builtins.filter(iptables_list) do |iptable_rule| iptable_rule != "" end Builtins.y2milestone( "Count of active iptables now: %1", Builtins.size(iptables_list) ) # none iptables rules if Ops.greater_than(Builtins.size(iptables_list), 0) any_firewall_running = true # any iptables rules exist else any_firewall_running = false end # error running command else Builtins.y2error( "Services Command: %1 (Exit %2) -> %3", command, Ops.get(iptables, "exit"), Ops.get(iptables, "stderr") ) return nil end # any firewall is running but it is not a SuSEfirewall2 if any_firewall_running && !IsStarted() Builtins.y2warning("Any other firewall is running...") return true end # no firewall is running or the running firewall is SuSEfirewall2 false end |
- (Boolean) IsServiceDefinedByPackageSupportedInZone(service, zone)
Returns whether a service is mentioned in FW_CONFIGURATIONS_. These services are defined by random packages.
IsServiceDefinedByPackageSupportedInZone (“service:sshd”, “EXT”) -> true
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# File '../../src/modules/SuSEFirewall.rb', line 2132 def IsServiceDefinedByPackageSupportedInZone(service, zone) return nil if !IsKnownZone(zone) if service == nil Builtins.y2error("Service Id can't be nil!") return nil elsif Builtins.regexpmatch(service, "^service:.*") service = Builtins.regexpsub(service, "^service:(.*)", "\\1") end # services defined by package are listed without "service:" which is here # just to distinguish between dynamic and static definitions supported_services = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_CONFIGURATIONS_", zone), ""), " " ) Builtins.contains(supported_services, service) end |
- (Boolean) IsServiceSupportedInZone(service, zone)
Function returns if service is supported (allowed) in zone. Service must be defined in the SuSEFirewallServices. Works transparently also with services defined by packages. Such service starts with "service:" prefix.
// All ports defined by dns-server service in SuSEFirewallServices module // are enabled in the respective zone IsServiceSupportedInZone ("dns-server", "EXT") -> true // irc-server definition exists on the system and the irc-server // is mentioned in FW_CONFIGURATIONS_EXT variable of SuSEfirewall2 IsServiceSupportedInZone ("service:irc-server", "EXT") -> true
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# File '../../src/modules/SuSEFirewall.rb', line 2167 def IsServiceSupportedInZone(service, zone) return nil if !IsKnownZone(zone) needed = SuSEFirewallServices.GetNeededPortsAndProtocols(service) # unknown service if needed == nil Builtins.y2error("Undefined service '%1'", service) return nil end # SuSEFirewall feature FW_PROTECT_FROM_INT # should not be protected and searched zones include also internal (or the zone IS internal, sure) if zone == @int_zone_shortname && !GetProtectFromInternalZone() Builtins.y2milestone( "Checking for service '%1', in '%2', PROTECT_FROM_INTERNAL='no' => allowed", service, zone ) return true end # FATE #300687: Ports for SuSEfirewall added via packages if SuSEFirewallServices.ServiceDefinedByPackage(service) supported = IsServiceDefinedByPackageSupportedInZone(service, zone) return supported end # starting with nil value, any false means that the service is not supported service_is_supported = nil Builtins.foreach(@service_defined_by) do |key| needed_ports = Ops.get(needed, key, []) next if needed_ports == [] if key == "tcp_ports" service_is_supported = ArePortsOrServicesAllowed( needed_ports, "TCP", zone, true ) elsif key == "udp_ports" service_is_supported = ArePortsOrServicesAllowed( needed_ports, "UDP", zone, true ) elsif key == "rpc_ports" service_is_supported = ArePortsOrServicesAllowed( needed_ports, "RPC", zone, false ) elsif key == "ip_protocols" service_is_supported = ArePortsOrServicesAllowed( needed_ports, "IP", zone, false ) elsif "broadcast_ports" == key # testing for allowed broadcast ports service_is_supported = IsBroadcastAllowed(needed_ports, zone) else Builtins.y2error("Unknown key '%1'", key) end # service is not supported, we don't have to do more tests raise Break if service_is_supported == false end service_is_supported end |
- (Boolean) IsStarted
Function determines if at least one SuSEFirewall script is started now. For configuration "started" status use GetStartService().
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# File '../../src/modules/SuSEFirewall.rb', line 1428 def IsStarted return false if !SuSEFirewallIsInstalled() return true if Mode.testsuite Builtins.y2milestone("Checking firewall status...") if Service.Status(@firewall_service) == 0 Builtins.y2milestone("Firewall service is started") return true else Builtins.y2milestone("Firewall service is stopped") return false end end |
- (Boolean) IsSupportedProtocol(protocol)
Local function returns if protocol is supported by firewall. Protocol name must be in upper-cases.
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# File '../../src/modules/SuSEFirewall.rb', line 451 def IsSupportedProtocol(protocol) Builtins.contains(@supported_protocols, protocol) end |
- (Boolean) IsVerbose
Local function returns if other functions should produce verbose output. like popups, reporting errors, etc.
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# File '../../src/modules/SuSEFirewall.rb', line 346 def IsVerbose # verbose level must be above zero to be verbose Ops.greater_than(@verbose_level, 0) end |
- (Object) main
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# File '../../src/modules/SuSEFirewall.rb', line 37 def main textdomain "base" Yast.import "Mode" Yast.import "Service" Yast.import "NetworkInterfaces" Yast.import "SuSEFirewallServices" Yast.import "PortAliases" Yast.import "Report" Yast.import "Message" Yast.import "Progress" Yast.import "PortRanges" Yast.import "PackageSystem" Yast.import "FileUtils" Yast.import "Directory" Yast.import "Stage" # <!-- SuSEFirewall VARIABLES //--> @FIREWALL_PACKAGE = "SuSEfirewall2" # configuration hasn't been read for the default # this should reduce the readings to only ONE @configuration_has_been_read = false # String which includes all interfaces not-defined in any zone @special_all_interface_string = "any" # Maximal number of port number, they are in the interval 1-65535 included @max_port_number = PortRanges.max_port_number # Zone which works with the special_all_interface_string string @special_all_interface_zone = "EXT" # firewall settings map @SETTINGS = {} # configuration was modified when true @modified = false # defines if SuSEFirewall is running @is_running = false # default settings for SuSEFirewall @DEFAULT_SETTINGS = { "FW_LOG_ACCEPT_ALL" => "no", "FW_LOG_ACCEPT_CRIT" => "yes", "FW_LOG_DROP_ALL" => "no", "FW_LOG_DROP_CRIT" => "yes", "FW_PROTECT_FROM_INT" => "no", "FW_ROUTE" => "no", "FW_MASQUERADE" => "no", "FW_ALLOW_FW_TRACEROUTE" => "yes", "FW_ALLOW_PING_FW" => "yes", "FW_ALLOW_FW_BROADCAST_EXT" => "no", "FW_ALLOW_FW_BROADCAST_INT" => "no", "FW_ALLOW_FW_BROADCAST_DMZ" => "no", "FW_IGNORE_FW_BROADCAST_EXT" => "yes", "FW_IGNORE_FW_BROADCAST_INT" => "no", "FW_IGNORE_FW_BROADCAST_DMZ" => "no", "FW_IPSEC_TRUST" => "no" } # verbose_level -> if verbosity is more than 0, be verbose, starting in verbose mode @verbose_level = 1 # list of known firewall zones @known_firewall_zones = ["INT", "DMZ", "EXT"] # map defines zone name for all known firewall zones @zone_names = { # TRANSLATORS: Firewall zone name - used in combo box or dialog title "EXT" => _( "External Zone" ), # TRANSLATORS: Firewall zone name - used in combo box or dialog title "INT" => _( "Internal Zone" ), # TRANSLATORS: Firewall zone name - used in combo box or dialog title "DMZ" => _( "Demilitarized Zone" ) } # internal zone identification - useful for protect-from-internal @int_zone_shortname = "INT" # list of protocols supported in firewall, use only upper-cases @supported_protocols = ["TCP", "UDP", "RPC", "IP"] # list of keys in map of definition well-known services @service_defined_by = [ "tcp_ports", "udp_ports", "rpc_ports", "ip_protocols", "broadcast_ports" ] # list of services currently allowed, which share ports (for instance RPC services) @allowed_conflict_services = {} @firewall_service = "SuSEfirewall2" @SuSEFirewall_variables = [ # zones and interfaces "FW_DEV_INT", "FW_DEV_DMZ", "FW_DEV_EXT", # services in zones "FW_SERVICES_INT_TCP", "FW_SERVICES_INT_UDP", "FW_SERVICES_INT_RPC", "FW_SERVICES_INT_IP", "FW_SERVICES_DMZ_TCP", "FW_SERVICES_DMZ_UDP", "FW_SERVICES_DMZ_RPC", "FW_SERVICES_DMZ_IP", "FW_SERVICES_EXT_TCP", "FW_SERVICES_EXT_UDP", "FW_SERVICES_EXT_RPC", "FW_SERVICES_EXT_IP", "FW_PROTECT_FROM_INT", # global routing, masquerading "FW_ROUTE", "FW_MASQUERADE", "FW_FORWARD_MASQ", "FW_FORWARD_ALWAYS_INOUT_DEV", # broadcast packets "FW_ALLOW_FW_BROADCAST_EXT", "FW_ALLOW_FW_BROADCAST_INT", "FW_ALLOW_FW_BROADCAST_DMZ", "FW_IGNORE_FW_BROADCAST_EXT", "FW_IGNORE_FW_BROADCAST_INT", "FW_IGNORE_FW_BROADCAST_DMZ", # FATE #300970: Support for 'Samba & friends' browsing "FW_SERVICES_ACCEPT_RELATED_EXT", "FW_SERVICES_ACCEPT_RELATED_INT", "FW_SERVICES_ACCEPT_RELATED_DMZ", # logging "FW_LOG_DROP_CRIT", "FW_LOG_DROP_ALL", "FW_LOG_ACCEPT_CRIT", "FW_LOG_ACCEPT_ALL", # IPsec support "FW_IPSEC_TRUST", # Custom rulezz # net,protocol[,dport][,sport] "FW_SERVICES_ACCEPT_EXT", "FW_SERVICES_ACCEPT_INT", "FW_SERVICES_ACCEPT_DMZ", # Custom kernel modules, e.g., for FTP "FW_LOAD_MODULES", # Services defined in /usr/share/SuSEfirewall2/services/ directory # FATE #300687: Ports for SuSEfirewall added via packages "FW_CONFIGURATIONS_EXT", "FW_CONFIGURATIONS_INT", "FW_CONFIGURATIONS_DMZ" ] @one_line_per_record = [ "FW_FORWARD_MASQ", "FW_SERVICES_ACCEPT_EXT", "FW_SERVICES_ACCEPT_INT", "FW_SERVICES_ACCEPT_DMZ" ] # FATE #300970: Firewall support for SMB browsing @broadcast_related_module = "nf_conntrack_netbios_ns" # Variable for ReportOnlyOnce() function @report_only_once = [] # <!-- SuSEFirewall LOCAL FUNCTIONS //--> # <!-- SuSEFirewall GLOBAL FUNCTIONS //--> # bnc #388773 # By default needed packages are just checked, not installed @check_and_install_package = false # Are needed packages (SuSEfirewall2) installed? @needed_packages_installed = nil # Configuration has been read and it's useful @fw_service_can_be_configured = false # old internal services definitions are converted to new services defined by packages # but only once @converted_to_services_dbp_file = Ops.add( Directory.vardir, "/yast2-firewall-already-converted-to-sdbp" ) # services have been already converted @already_converted = false @protocol_translations = { # protocol name "tcp" => _("TCP"), # protocol name "udp" => _("UDP"), # protocol name "_rpc_" => _("RPC"), # protocol name "ip" => _("IP") } end |
- (Boolean) Read
Function for reading SuSEFirewall configuration. Fills internal variables only.
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# File '../../src/modules/SuSEFirewall.rb', line 2458 def Read # Don't fill up the logs with tones of Check-logs # Turn on for debugging NetworkInterfaces.report_every_check = false # Do not read it again and again # to avoid rewriting changes already made if @configuration_has_been_read Builtins.y2milestone( "SuSEfirewall2 configuration has been read already." ) return @fw_service_can_be_configured end # bnc #429861 if Stage.initial Builtins.y2warning("Stage::initial -> firewall can't be configured.") FillUpEmptyConfig() return false end if !SuSEFirewallIsInstalled() Builtins.y2warning( "Package not installed, disabling SuSEfirewall2-related functions." ) FillUpEmptyConfig() return false end # Can be configured, packages were installed @fw_service_can_be_configured = true # Progress only for normal configuration have_progress = Mode.normal if have_progress # TRANSLATORS: Dialog caption read_caption = _("Initializing Firewall Configuration") Progress.New( read_caption, " ", 4, [ # TRANSLATORS: Progress step _("Check for network devices"), # TRANSLATORS: Progress step _("Read current configuration"), # TRANSLATORS: Progress step _("Check possibly conflicting services"), # TRANSLATORS: Progress step _("Read dynamic definitions of installed services") ], [ # TRANSLATORS: Progress step _("Checking for network devices..."), # TRANSLATORS: Progress step _("Reading current configuration..."), # TRANSLATORS: Progress step _("Checking possibly conflicting services..."), # TRANSLATORS: Progress step _("Reading dynamic definitions of installed services..."), Message.Finished ], "" ) Progress.NextStage end # Always call NI::Read, bnc #396646 NetworkInterfaces.Read if Mode.installation # Allways modified for installation, allways save the final state # fixing bug #67355 # SetModified(); make_parser_happy = true end Progress.NextStage if have_progress # get default configuration for autoinstallation # if (Mode::installation() || Mode::autoinst()) { if Mode.autoinst ReadDefaultConfiguration() # read current configuration for another cases else ReadCurrentConfiguration() end Progress.NextStage if have_progress # checking if any possibly conficting services were turned on in configuration # filling internal values for later checkings # CheckAllPossiblyConflictingServices(); # -- Function has been turned off as we don't support services defined by YaST itself anymore -- Builtins.y2milestone( "Firewall configuration has been read: %1.", @SETTINGS ) # to read configuration only once @configuration_has_been_read = true Progress.NextStage if have_progress SuSEFirewallServices.ReadServicesDefinedByRPMPackages Progress.NextStage if have_progress # bnc #399217 # Converting built-in service definitions to services defined by packages ConvertToServicesDefinedByPackages() Progress.Finish if have_progress true end |
- (Object) ReadCurrentConfiguration
Local function reads current configuration and fills internal values.
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# File '../../src/modules/SuSEFirewall.rb', line 2424 def ReadCurrentConfiguration @SETTINGS = {} # is firewall enabled in /etc/init.d/ ? Ops.set(@SETTINGS, "enable_firewall", IsEnabled()) # is firewall started now? Ops.set(@SETTINGS, "start_firewall", IsStarted()) ReadSysconfigSuSEFirewall(GetListOfSuSEFirewallVariables()) nil end |
- (Object) ReadDefaultConfiguration
Local function sets the default configuration and fills internal values.
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# File '../../src/modules/SuSEFirewall.rb', line 2415 def ReadDefaultConfiguration @SETTINGS = {} ResetSysconfigSuSEFirewall(GetListOfSuSEFirewallVariables()) nil end |
- (Object) ReadSysconfigSuSEFirewall(variables)
Local function for reading list of sysconfig variables into internal variables.
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# File '../../src/modules/SuSEFirewall.rb', line 362 def ReadSysconfigSuSEFirewall(variables) variables = deep_copy(variables) Builtins.foreach(variables) do |variable| value = Convert.to_string( SCR.Read(Builtins.add(path(".sysconfig.SuSEfirewall2"), variable)) ) # if value is undefined, get default value value = GetDefaultValue(variable) if value == nil || value == "" # BNC #426000 # backslash at the end if Builtins.regexpmatch(value, "[ \t]*\\\\[ \t]*\n") rules = Builtins.splitstring(value, "\\ \t\n") rules = Builtins.filter(rules) do |one_rule| one_rule != nil && one_rule != "" end value = Builtins.mergestring(rules, " ") end # BNC #194419 # replace all "\n" with " " in variables if Builtins.regexpmatch(value, "\n") value = Builtins.mergestring(Builtins.splitstring(value, "\n"), " ") end # replace all "\t" with " " in variables if Builtins.regexpmatch(value, "\t") value = Builtins.mergestring(Builtins.splitstring(value, "\t"), " ") end Ops.set(@SETTINGS, variable, value) end nil end |
- (Object) RemoveAllowedBroadcast(needed_ports, zone)
Local function removes list of ports from port allowing broadcast packets in zone.
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# File '../../src/modules/SuSEFirewall.rb', line 681 def RemoveAllowedBroadcast(needed_ports, zone) needed_ports = deep_copy(needed_ports) SetModified() allowed_ports = GetBroadcastAllowedPorts() list_ports_allowed = Ops.get(allowed_ports, zone, []) # ports to be allowed one by one Builtins.foreach(needed_ports) do |allow_this_port| # remove all aliases of ports yet mentioned in zone aliases_of_port = PortAliases.GetListOfServiceAliases(allow_this_port) list_ports_allowed = Builtins.filter(list_ports_allowed) do |just_allowed| !Builtins.contains(aliases_of_port, just_allowed) end end Ops.set(allowed_ports, zone, list_ports_allowed) # save it using function SetBroadcastAllowedPorts(allowed_ports) nil end |
- (Object) RemoveAllowedPortsOrServices(remove_ports, protocol, zone, check_for_aliases)
Local function removes ports and their aliases (if check_for_aliases is true), for requested protocol and zone.
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# File '../../src/modules/SuSEFirewall.rb', line 768 def RemoveAllowedPortsOrServices(remove_ports, protocol, zone, check_for_aliases) remove_ports = deep_copy(remove_ports) if Ops.less_than(Builtins.size(remove_ports), 1) Builtins.y2warning( "Undefined list of %1 services/ports for service", protocol ) return end SetModified() # all allowed ports allowed_services = PortRanges.DividePortsAndPortRanges( GetAllowedServicesForZoneProto(zone, protocol), false ) # removing all aliases of ports too, adding aliases into if check_for_aliases remove_ports_with_aliases = [] Builtins.foreach(remove_ports) do |remove_port| # skip port ranges, they cannot have any port-alias if PortRanges.IsPortRange(remove_port) remove_ports_with_aliases = Builtins.add( remove_ports_with_aliases, remove_port ) next end remove_these_ports = PortAliases.GetListOfServiceAliases(remove_port) remove_these_ports = [remove_port] if remove_these_ports == nil remove_ports_with_aliases = Convert.convert( Builtins.union(remove_ports_with_aliases, remove_these_ports), :from => "list", :to => "list <string>" ) end remove_ports = deep_copy(remove_ports_with_aliases) end remove_ports = Builtins.toset(remove_ports) # Remove ports only once (because of port aliases), any => integers and strings already_removed = [] Builtins.foreach(remove_ports) do |remove_port| # Removing from normal ports Ops.set( allowed_services, "ports", Builtins.filter(Ops.get(allowed_services, "ports", [])) do |allowed_port| allowed_port != "" && allowed_port != remove_port end ) # Removing also from port ranges if Ops.get(allowed_services, "port_ranges", []) != [] # Removing a real port from port ranges if !PortRanges.IsPortRange(remove_port) remove_port_nr = PortAliases.GetPortNumber(remove_port) # Because of all port aliases if !Builtins.contains(already_removed, remove_port_nr) already_removed = Builtins.add(already_removed, remove_port_nr) Ops.set( allowed_services, "port_ranges", PortRanges.RemovePortFromPortRanges( remove_port_nr, Ops.get(allowed_services, "port_ranges", []) ) ) end # Removing a port range from port ranges else if !Builtins.contains(already_removed, remove_port) # Just filtering the exact port range Ops.set( allowed_services, "port_ranges", Builtins.filter(Ops.get(allowed_services, "port_ranges", [])) do |one_port_range| one_port_range != remove_port end ) already_removed = Builtins.add(already_removed, remove_port) end end end end allowed_services_all = Convert.convert( Builtins.union( Ops.get(allowed_services, "ports", []), Ops.get(allowed_services, "port_ranges", []) ), :from => "list", :to => "list <string>" ) allowed_services_all = PortRanges.FlattenServices( allowed_services_all, protocol ) SetAllowedServicesForZoneProto(allowed_services_all, zone, protocol) nil end |
- (Object) RemoveForwardIntoMasqueradeRule(remove_item)
Function removes rule for forwarding into masquerade from the list of current rules returned by GetListOfForwardsIntoMasquerade().
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# File '../../src/modules/SuSEFirewall.rb', line 3182 def RemoveForwardIntoMasqueradeRule(remove_item) SetModified() forward_rules = [] row_counter = 0 Builtins.foreach( Builtins.splitstring( Ops.get_string(@SETTINGS, "FW_FORWARD_MASQ", ""), " " ) ) do |forward_rule| next if forward_rule == "" if row_counter != remove_item forward_rules = Builtins.add(forward_rules, forward_rule) end row_counter = Ops.add(row_counter, 1) end Ops.set( @SETTINGS, "FW_FORWARD_MASQ", Builtins.mergestring(forward_rules, " ") ) nil end |
- (Object) RemoveInterfaceFromZone(interface, zone)
Function removes interface from defined zone.
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# File '../../src/modules/SuSEFirewall.rb', line 1713 def RemoveInterfaceFromZone(interface, zone) SetModified() Builtins.y2milestone( "Removing interface '%1' from '%2' zone.", interface, zone ) interfaces_in_zone = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) interfaces_in_zone = Builtins.filter(interfaces_in_zone) do |single_interface| single_interface != "" && single_interface != interface end Ops.set( @SETTINGS, Ops.add("FW_DEV_", zone), Builtins.mergestring(interfaces_in_zone, " ") ) nil end |
- (Object) RemoveOldAllowedServiceFromZone(old_service_def, zone)
Removes old-service definitions before they are added as services defined by packages.
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# File '../../src/modules/SuSEFirewall.rb', line 3616 def RemoveOldAllowedServiceFromZone(old_service_def, zone) old_service_def = deep_copy(old_service_def) Builtins.y2milestone("Removing: %1 from zone %2", old_service_def, zone) if Ops.get_list(old_service_def, "tcp_ports", []) != [] Builtins.foreach(Ops.get_list(old_service_def, "tcp_ports", [])) do |one_service| RemoveService(one_service, "TCP", zone) end end if Ops.get_list(old_service_def, "udp_ports", []) != [] Builtins.foreach(Ops.get_list(old_service_def, "udp_ports", [])) do |one_service| RemoveService(one_service, "UDP", zone) end end if Ops.get_list(old_service_def, "rpc_ports", []) != [] Builtins.foreach(Ops.get_list(old_service_def, "rpc_ports", [])) do |one_service| RemoveService(one_service, "RPC", zone) end end if Ops.get_list(old_service_def, "ip_protocols", []) != [] Builtins.foreach(Ops.get_list(old_service_def, "ip_protocols", [])) do |one_service| RemoveService(one_service, "IP", zone) end end if Ops.get_list(old_service_def, "broadcast_ports", []) != [] broadcast = GetBroadcastAllowedPorts() Ops.set(broadcast, zone, Builtins.filter(Ops.get(broadcast, zone, [])) do |one_port| !Builtins.contains( Ops.get_list(old_service_def, "broadcast_ports", []), one_port ) end) SetBroadcastAllowedPorts(broadcast) end nil end |
- (Boolean) RemoveService(service, protocol, interface)
Function removes service from selected zone (or for interface) for selected protocol. Function takes care about port-aliases, removes all of them.
RemoveService (“22”, “TCP”, “DMZ”) -> true is the same as RemoveService ("ssh", "TCP", "DMZ") -> true
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# File '../../src/modules/SuSEFirewall.rb', line 2017 def RemoveService(service, protocol, interface) success = false Builtins.y2milestone( "Removing service %1, protocol %2 from %3", service, protocol, interface ) if !IsSupportedProtocol(protocol) Builtins.y2error("Unknown protocol: %1", protocol) return false end zones_affected = [] # "all" means for all known zones if interface == "all" zones_affected = GetKnownFirewallZones() # zone or interface name else if !IsKnownZone(interface) # interface is probably interface-name, checking for respective zone interface = GetZoneOfInterface(interface) # interface is not assigned to any zone if interface == nil # TRANSLATORS: Error message, %1 = interface name (like eth0) Report.Error( Builtins.sformat( _( "Interface '%1' is not assigned to any firewall zone.\nRun YaST2 Firewall and assign it.\n" ), interface ) ) Builtins.y2warning( "Interface '%1' is not assigned to any firewall zone", interface ) return false end end zones_affected = [interface] end SetModified() # Adding service support into each mentioned zone Builtins.foreach(zones_affected) do |zone| # if the service is allowed if ArePortsOrServicesAllowed([service], protocol, zone, true) RemoveAllowedPortsOrServices([service], protocol, zone, true) else Builtins.y2milestone( "Port %1 has been already removed from %2", service, zone ) end end true end |
- (Object) RemoveServiceDefinedByPackageFromZone(service, zone)
Removes service defined by package (FATE #300687) from enabled services.
RemoveServiceDefinedByPackageFromZone (“service:irc-server”, “EXT”);
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# File '../../src/modules/SuSEFirewall.rb', line 913 def RemoveServiceDefinedByPackageFromZone(service, zone) return nil if !IsKnownZone(zone) if service == nil Builtins.y2error("Service Id can't be nil!") return nil elsif Builtins.regexpmatch(service, "^service:.*") service = Builtins.regexpsub(service, "^service:(.*)", "\\1") end # services defined by package are listed without "service:" which is here # just to distinguish between dynamic and static definitions supported_services = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_CONFIGURATIONS_", zone), ""), " " ) # Removing the service supported_services = Builtins.filter(supported_services) do |one_service| one_service != service end Ops.set( @SETTINGS, Ops.add("FW_CONFIGURATIONS_", zone), Builtins.mergestring(supported_services, " ") ) SetModified() nil end |
- (Boolean) RemoveServiceFromProtocolZone(remove_service, protocol, zone)
Local function for removing (disallowing) single service/port for defined protocol and zone. Functions doesn't take care of port-aliases.
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# File '../../src/modules/SuSEFirewall.rb', line 743 def RemoveServiceFromProtocolZone(remove_service, protocol, zone) SetModified() key = Ops.add(Ops.add(Ops.add("FW_SERVICES_", zone), "_"), protocol) allowed = Builtins.splitstring(Ops.get_string(@SETTINGS, key, ""), " ") allowed = Builtins.filter(allowed) do |single_service| single_service != "" && single_service != remove_service end Ops.set( @SETTINGS, key, Builtins.mergestring(Builtins.toset(allowed), " ") ) true end |
- (Object) RemoveServiceSupportFromZone(service, zone)
Local function removes well-known service's support from zone. Allowed ports are removed with all of their port-aliases.
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# File '../../src/modules/SuSEFirewall.rb', line 987 def RemoveServiceSupportFromZone(service, zone) needed = SuSEFirewallServices.GetNeededPortsAndProtocols(service) # unknown service if needed == nil Builtins.y2error("Undefined service '%1'", service) return nil end # FATE #300687: Ports for SuSEfirewall added via packages if SuSEFirewallServices.ServiceDefinedByPackage(service) if IsServiceSupportedInZone(service, zone) == true RemoveServiceDefinedByPackageFromZone(service, zone) end return nil end SetModified() # Removing service ports (and also port aliases for TCP and UDP) Builtins.foreach(@service_defined_by) do |key| needed_ports = Ops.get(needed, key, []) next if needed_ports == [] if key == "tcp_ports" RemoveAllowedPortsOrServices(needed_ports, "TCP", zone, true) elsif key == "udp_ports" RemoveAllowedPortsOrServices(needed_ports, "UDP", zone, true) elsif key == "rpc_ports" RemoveAllowedPortsOrServices(needed_ports, "RPC", zone, false) elsif key == "ip_protocols" RemoveAllowedPortsOrServices(needed_ports, "IP", zone, false) elsif "broadcast_ports" == key RemoveAllowedBroadcast(needed_ports, zone) else Builtins.y2error("Unknown key '%1'", key) end end nil end |
- (Object) RemoveSpecialInterfaceFromZone(interface, zone)
Function removes special string from defined zone.
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# File '../../src/modules/SuSEFirewall.rb', line 3039 def RemoveSpecialInterfaceFromZone(interface, zone) SetModified() Builtins.y2milestone( "Removing special string '%1' from '%2' zone.", interface, zone ) interfaces_in_zone = Builtins.splitstring( Ops.get_string(@SETTINGS, Ops.add("FW_DEV_", zone), ""), " " ) interfaces_in_zone = Builtins.filter(interfaces_in_zone) do |single_interface| single_interface != "" && single_interface != interface end Ops.set( @SETTINGS, Ops.add("FW_DEV_", zone), Builtins.mergestring(interfaces_in_zone, " ") ) nil end |
- (Boolean) ReportOnlyOnce(what_to_report)
Report the error, warning, message only once. Stores the error, warning, message in memory. This is just a helper function that could avoid from filling y2log up with a lot of the very same messages - 'foreach()' is a very powerful builtin.
string error = sformat(“Port number %1 is invalid.”, port_nr); if (ReportOnlyOnce(error)) y2error(error);
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# File '../../src/modules/SuSEFirewall.rb', line 297 def ReportOnlyOnce(what_to_report) if Builtins.contains(@report_only_once, what_to_report) return false else @report_only_once = Builtins.add(@report_only_once, what_to_report) return true end end |
- (Object) ResetModified
Do not use this function. Only for firewall installation proposal.
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# File '../../src/modules/SuSEFirewall.rb', line 270 def ResetModified Builtins.y2milestone("Reseting firewall-modified to 'false'") @modified = false nil end |
- (Object) ResetReadFlag
Function resets flag which doesn't allow to read configuration from disk again. So you actually can reread the configuration from disk. Currently, only the first Read() call reads the configuration from disk.
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# File '../../src/modules/SuSEFirewall.rb', line 1141 def ResetReadFlag @configuration_has_been_read = false nil end |
- (Object) ResetSysconfigSuSEFirewall(variables)
Local function for reseting list of sysconfig variables in internal variables.
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# File '../../src/modules/SuSEFirewall.rb', line 397 def ResetSysconfigSuSEFirewall(variables) variables = deep_copy(variables) Builtins.foreach(variables) do |variable| # reseting means getting default variables Ops.set(@SETTINGS, variable, GetDefaultValue(variable)) end nil end |
- (Boolean) SaveAndRestartService
Function for saving configuration and restarting firewall. Is is the same as Write() but write is allways forced.
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# File '../../src/modules/SuSEFirewall.rb', line 2786 def SaveAndRestartService Builtins.y2milestone("Forced save and restart") SetModified() SetStartService(true) return false if !Write() true end |
- (Boolean) SetAcceptExpertRules(zone, expert_rules)
Sets expert allow rules for zone.
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# File '../../src/modules/SuSEFirewall.rb', line 3425 def SetAcceptExpertRules(zone, expert_rules) zone = Builtins.toupper(zone) # Check for zone if !Builtins.contains(GetKnownFirewallZones(), zone) Builtins.y2error("Unknown firewall zone: %1", zone) return false end Ops.set(@SETTINGS, Ops.add("FW_SERVICES_ACCEPT_", zone), expert_rules) SetModified() true end |
- (Object) SetAdditionalServices(protocol, zone, new_list_services)
Function sets additional ports/services from taken list. Firstly, all additional services are removed also with their aliases. Secondly new ports/protocols are added. It uses GetAdditionalServices() function to get the current state and then it removes what has been removed and adds what has been added.
SetAdditionalServices (“TCP”, “EXT”, [“53”, “128”])
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# File '../../src/modules/SuSEFirewall.rb', line 2878 def SetAdditionalServices(protocol, zone, new_list_services) new_list_services = deep_copy(new_list_services) old_list_services = Builtins.toset(GetAdditionalServices(protocol, zone)) new_list_services = Builtins.toset(new_list_services) if new_list_services != old_list_services SetModified() add_services = [] remove_services = [] # Add these services Builtins.foreach(new_list_services) do |service| if !Builtins.contains(old_list_services, service) add_services = Builtins.add(add_services, service) end end # Remove these services Builtins.foreach(old_list_services) do |service| if !Builtins.contains(new_list_services, service) remove_services = Builtins.add(remove_services, service) end end if Ops.greater_than(Builtins.size(remove_services), 0) Builtins.y2milestone( "Removing additional services %1/%2 from zone %3", remove_services, protocol, zone ) RemoveAllowedPortsOrServices(remove_services, protocol, zone, true) end if Ops.greater_than(Builtins.size(add_services), 0) Builtins.y2milestone( "Adding additional services %1/%2 into zone %3", add_services, protocol, zone ) AddAllowedPortsOrServices(add_services, protocol, zone) end end nil end |
- (Object) SetAllowedServicesForZoneProto(allowed_services, zone, protocol)
Function sets list of services as allowed ports for zone and protocol
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# File '../../src/modules/SuSEFirewall.rb', line 520 def SetAllowedServicesForZoneProto(allowed_services, zone, protocol) allowed_services = deep_copy(allowed_services) SetModified() Ops.set( @SETTINGS, Ops.add(Ops.add(Ops.add("FW_SERVICES_", zone), "_"), protocol), Builtins.mergestring(Builtins.toset(allowed_services), " ") ) nil end |
- (Object) SetBroadcastAllowedPorts(broadcast)
Function creates allowed-broadcast-ports string from broadcast map and saves it.
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# File '../../src/modules/SuSEFirewall.rb', line 611 def SetBroadcastAllowedPorts(broadcast) broadcast = deep_copy(broadcast) SetModified() Builtins.foreach(GetKnownFirewallZones()) do |zone| Ops.set(broadcast, zone, ["no"]) if Ops.get(broadcast, zone, []) == [] SetBroadcastConfiguration( zone, Builtins.mergestring(Ops.get(broadcast, zone, []), " ") ) end nil end |
- (Object) SetBroadcastConfiguration(zone, broadcast_configuration)
Local function saves configuration string for broadcast packets.
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# File '../../src/modules/SuSEFirewall.rb', line 543 def SetBroadcastConfiguration(zone, broadcast_configuration) SetModified() Ops.set( @SETTINGS, Ops.add("FW_ALLOW_FW_BROADCAST_", zone), broadcast_configuration ) nil end |
- (Object) SetEnableService(enable_service)
Function which sets if SuSEfirewall should start in Write process
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# File '../../src/modules/SuSEFirewall.rb', line 1317 def SetEnableService(enable_service) if !SuSEFirewallIsInstalled() Builtins.y2warning("Cannot set SetEnableService") return nil end if GetEnableService() != enable_service SetModified() Builtins.y2milestone("Setting enable-firewall to %1", enable_service) Ops.set(@SETTINGS, "enable_firewall", enable_service) else # without set modified Builtins.y2milestone( "enable-firewall has been already set to %1", enable_service ) Ops.set(@SETTINGS, "enable_firewall", enable_service) end nil end |
- (Object) SetFirewallKernelModules(k_modules)
Sets list of additional kernel modules to be loaded by firewall on startup.
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# File '../../src/modules/SuSEFirewall.rb', line 3464 def SetFirewallKernelModules(k_modules) k_modules = deep_copy(k_modules) k_modules = Builtins.filter(k_modules) do |one_module| if one_module == nil Builtins.y2error( "List of modules %1 contains 'nil'! It will be ignored.", k_modules ) next false elsif one_module == "" Builtins.y2warning( "List of modules %1 contains an empty string, it will be ignored.", k_modules ) next false end if Builtins.regexpmatch(one_module, " ") || Builtins.regexpmatch(one_module, "\t") Builtins.y2warning( "Additional module '%1' contains spaces. They will be evaluated as two or more modules later.", one_module ) end true end Ops.set( @SETTINGS, "FW_LOAD_MODULES", Builtins.mergestring(k_modules, " ") ) SetModified() nil end |
- (Object) SetIgnoreLoggingBroadcast(zone, bcast)
Function sets yes/no - ingoring broadcast for zone
// Do not log broadcast packetes from DMZ SetIgnoreLoggingBroadcast ("DMZ", "yes")
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# File '../../src/modules/SuSEFirewall.rb', line 3374 def SetIgnoreLoggingBroadcast(zone, bcast) if !IsKnownZone(zone) Builtins.y2error("Unknown zone '%1'", zone) return nil end SetModified() Ops.set(@SETTINGS, Ops.add("FW_IGNORE_FW_BROADCAST_", zone), bcast) nil end |
- (Object) SetInstallPackagesIfMissing(new_status)
By default SuSEfirewall2 packages are just checked whether they are installed. With this function, you can change the behavior to also offer installing the packages.
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# File '../../src/modules/SuSEFirewall.rb', line 1081 def SetInstallPackagesIfMissing(new_status) if new_status == nil Builtins.y2error("Wrong value: %1", new_status) return end @check_and_install_package = new_status if @check_and_install_package Builtins.y2milestone("SuSEfirewall2 packages will installed if missing") else Builtins.y2milestone( "SuSEfirewall2 packages will not be installed even if missing" ) end nil end |
- (Object) SetLoggingSettings(rule, state)
Function sets state of logging for rule taken as parameter.
SetLoggingSettings (“ACCEPT”, “ALL”) SetLoggingSettings ("DROP", "NONE")
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# File '../../src/modules/SuSEFirewall.rb', line 3317 def SetLoggingSettings(rule, state) SetModified() if rule == "ACCEPT" if state == "ALL" Ops.set(@SETTINGS, "FW_LOG_ACCEPT_CRIT", "yes") Ops.set(@SETTINGS, "FW_LOG_ACCEPT_ALL", "yes") elsif state == "CRIT" Ops.set(@SETTINGS, "FW_LOG_ACCEPT_CRIT", "yes") Ops.set(@SETTINGS, "FW_LOG_ACCEPT_ALL", "no") else Ops.set(@SETTINGS, "FW_LOG_ACCEPT_CRIT", "no") Ops.set(@SETTINGS, "FW_LOG_ACCEPT_ALL", "no") end elsif rule == "DROP" if state == "ALL" Ops.set(@SETTINGS, "FW_LOG_DROP_CRIT", "yes") Ops.set(@SETTINGS, "FW_LOG_DROP_ALL", "yes") elsif state == "CRIT" Ops.set(@SETTINGS, "FW_LOG_DROP_CRIT", "yes") Ops.set(@SETTINGS, "FW_LOG_DROP_ALL", "no") else Ops.set(@SETTINGS, "FW_LOG_DROP_CRIT", "no") Ops.set(@SETTINGS, "FW_LOG_DROP_ALL", "no") end else Builtins.y2error("Possible rules are only 'ACCEPT' or 'DROP'") end nil end |
- (Object) SetMasquerade(enable)
Function sets Masquerade support.
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# File '../../src/modules/SuSEFirewall.rb', line 3103 def SetMasquerade(enable) SetModified() Ops.set(@SETTINGS, "FW_MASQUERADE", enable ? "yes" : "no") # routing is needed for masquerading, but we can't swithc it off when disabling masquerading Ops.set(@SETTINGS, "FW_ROUTE", "yes") if enable nil end |
- (Object) SetModified
Function sets internal variable, which indicates, that any "firewall settings were modified", to "true".
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# File '../../src/modules/SuSEFirewall.rb', line 262 def SetModified @modified = true nil end |
- (Object) SetProtectFromInternalZone(set_protect)
Function sets if firewall should be protected from internal zone.
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# File '../../src/modules/SuSEFirewall.rb', line 1163 def SetProtectFromInternalZone(set_protect) SetModified() if set_protect Ops.set(@SETTINGS, "FW_PROTECT_FROM_INT", "yes") else Ops.set(@SETTINGS, "FW_PROTECT_FROM_INT", "no") end nil end |
- (Boolean) SetServices(services_ids, interfaces, new_status)
Function sets status for several services on several network interfaces.
SetServices ([“samba-server”, “service:irc-server”], [“eth1”, “modem0”], false) // Enabling services SetServices (["samba-server", "service:irc-server"], ["eth1", "modem0"], true)
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# File '../../src/modules/SuSEFirewall.rb', line 2397 def SetServices(services_ids, interfaces, new_status) services_ids = deep_copy(services_ids) interfaces = deep_copy(interfaces) firewall_zones = GetZonesOfInterfacesWithAnyFeatureSupported(interfaces) if Builtins.size(firewall_zones) == 0 Builtins.y2error( "Interfaces '%1' are not in any group if interfaces", interfaces ) return false end SetModified() SetServicesForZones(services_ids, firewall_zones, new_status) end |
- (Object) SetServicesAcceptRelated(zone, ruleset)
Functions sets FW_SERVICES_ACCEPT_RELATED_*: Services to allow that are considered RELATED by the connection tracking engine, e.g., SLP browsing reply or Samba browsing reply.
SetServicesAcceptRelated (“EXT”, [“0/0,udp,427”, “0/0,udp,137”])
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# File '../../src/modules/SuSEFirewall.rb', line 3557 def SetServicesAcceptRelated(zone, ruleset) ruleset = deep_copy(ruleset) if !IsKnownZone(zone) Builtins.y2error("Uknown zone '%1'", zone) return end ruleset = Builtins.filter(ruleset) { |one_rule| one_rule != nil } SetModified() Ops.set( @SETTINGS, Ops.add("FW_SERVICES_ACCEPT_RELATED_", zone), Builtins.mergestring(ruleset, "\n") ) nil end |
- (Boolean) SetServicesForZones(services_ids, firewall_zones, new_status)
Function sets status for several services in several firewall zones.
SetServicesForZones ([“samba-server”, “service:irc-server”], [“DMZ”, “EXT”], false); SetServicesForZones (["samba-server", "service:irc-server"], ["EXT", "DMZ"], true);
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# File '../../src/modules/SuSEFirewall.rb', line 2342 def SetServicesForZones(services_ids, firewall_zones, new_status) services_ids = deep_copy(services_ids) firewall_zones = deep_copy(firewall_zones) # no groups == all groups if Builtins.size(firewall_zones) == 0 firewall_zones = GetKnownFirewallZones() end # setting for each service Builtins.foreach(services_ids) do |service_id| Builtins.foreach(firewall_zones) do |firewall_zone| # zone must be known one if !IsKnownZone(firewall_zone) Builtins.y2error( "Zone '%1' is unknown firewall zone, skipping...", firewall_zone ) next end SetModified() # setting new status if new_status == true Builtins.y2milestone( "Adding '%1' into '%2' zone", service_id, firewall_zone ) AddServiceSupportIntoZone(service_id, firewall_zone) else Builtins.y2milestone( "Removing '%1' from '%2' zone", service_id, firewall_zone ) RemoveServiceSupportFromZone(service_id, firewall_zone) end end end nil end |
- (Object) SetStartService(start_service)
Function which sets if SuSEfirewall should start in Write process.
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# File '../../src/modules/SuSEFirewall.rb', line 1280 def SetStartService(start_service) if !SuSEFirewallIsInstalled() Builtins.y2warning("Cannot set SetStartService") return nil end if GetStartService() != start_service SetModified() Builtins.y2milestone("Setting start-firewall to %1", start_service) Ops.set(@SETTINGS, "start_firewall", start_service) else # without set modified! Builtins.y2milestone( "start-firewall has been already set to %1", start_service ) Ops.set(@SETTINGS, "start_firewall", start_service) end nil end |
- (Object) SetSupportRoute(set_route)
Function sets if firewall should support routing.
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# File '../../src/modules/SuSEFirewall.rb', line 1185 def SetSupportRoute(set_route) SetModified() if set_route Ops.set(@SETTINGS, "FW_ROUTE", "yes") else Ops.set(@SETTINGS, "FW_ROUTE", "no") end nil end |
- (Object) SetTrustIPsecAs(zone)
Function sets how firewall should trust successfully decrypted IPsec packets. It should be the zone name (shortname) or 'no' to trust packets the same as firewall trusts the zone from which IPsec packet came.
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# File '../../src/modules/SuSEFirewall.rb', line 1209 def SetTrustIPsecAs(zone) SetModified() # do not trust if zone == "no" Ops.set(@SETTINGS, "FW_IPSEC_TRUST", "no") else # trust IPsec is a known zone if IsKnownZone(zone) zone = GetZoneConfigurationString(zone) Ops.set(@SETTINGS, "FW_IPSEC_TRUST", zone) # unknown zone, changing to default value else defaultv = GetDefaultValue("FW_IPSEC_TRUST") Builtins.y2warning( "Trust IPsec as '%1' (unknown zone) changed to '%2'", zone, defaultv ) Ops.set(@SETTINGS, "FW_IPSEC_TRUST", defaultv) end end nil end |
- (Boolean) StartServices
Functions starts services needed for SuSEFirewall
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# File '../../src/modules/SuSEFirewall.rb', line 1343 def StartServices return true if Mode.testsuite return false if !SuSEFirewallIsInstalled() if Service.Start(@firewall_service) Builtins.y2milestone("Started") return true else Builtins.y2error("Cannot start service %1", @firewall_service) return false end end |
- (Boolean) StopServices
Functions stops services needed for SuSEFirewall
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# File '../../src/modules/SuSEFirewall.rb', line 1360 def StopServices return true if Mode.testsuite return false if !SuSEFirewallIsInstalled() if Service.Stop(@firewall_service) Builtins.y2milestone("Stopped") return true else Builtins.y2error("Could not stop service %1", @firewall_service) return false end end |
- (Boolean) SuSEFirewallIsInstalled
Returns whether all needed packages are installed.
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# File '../../src/modules/SuSEFirewall.rb', line 1103 def SuSEFirewallIsInstalled if @needed_packages_installed == nil # In mode normal, package can be installed on request # if required by the module if @check_and_install_package && Mode.normal @needed_packages_installed = PackageSystem.CheckAndInstallPackages( [@FIREWALL_PACKAGE] ) Builtins.y2milestone( "CheckAndInstallPackages -> %1", @needed_packages_installed ) # In mode install/update network might be down else @needed_packages_installed = PackageSystem.Installed( @FIREWALL_PACKAGE ) Builtins.y2milestone("Installed -> %1", @needed_packages_installed) end elsif @needed_packages_installed == false Builtins.y2milestone("SuSEfirewall2 is not installed, skipping...") end @needed_packages_installed end |
- (Boolean) Write
Function for writing and enabling configuration it is an union of WriteConfiguration() and ActivateConfiguration().
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# File '../../src/modules/SuSEFirewall.rb', line 2769 def Write CheckKernelModules() # just disabled return true if !SuSEFirewallIsInstalled() return false if !WriteConfiguration() return false if !ActivateConfiguration() true end |
- (Boolean) WriteConfiguration
Function writes configuration into /etc/sysconfig/ and enables or disables firewall in /etc/init.d/ by the setting SetEnableService(boolean). This is a write-only configuration, firewall is never started only enabled or disabled.
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# File '../../src/modules/SuSEFirewall.rb', line 2671 def WriteConfiguration # just disabled return true if !SuSEFirewallIsInstalled() # Progress only for normal configuration and command line have_progress = Mode.normal if have_progress # TRANSLATORS: Dialog caption write_caption = _("Writing Firewall Configuration") Progress.New( write_caption, " ", 2, [ # TRANSLATORS: Progress step _("Write firewall settings"), # TRANSLATORS: Progress step _("Adjust firewall service") ], [ # TRANSLATORS: Progress step _("Writing firewall settings..."), # TRANSLATORS: Progress step _("Adjusting firewall service..."), # TRANSLATORS: Progress step Message.Finished ], "" ) Progress.NextStage end # only modified configuration is written if GetModified() Builtins.y2milestone( "Firewall configuration has been changed. Writing: %1.", @SETTINGS ) if !WriteSysconfigSuSEFirewall(GetListOfSuSEFirewallVariables()) # TRANSLATORS: a popup error message Report.Error(_("Writing settings failed")) return false end else Builtins.y2milestone("Firewall settings weren't modified, skipping...") end Progress.NextStage if have_progress # Adjusting services if GetModified() # enabling firewall in /etc/init.d/ if Ops.get_boolean(@SETTINGS, "enable_firewall", false) Builtins.y2milestone("Enabling firewall services") return false if !EnableServices() # disabling firewall in /etc/init.d/ else Builtins.y2milestone("Disabling firewall services") return false if !DisableServices() end else Builtins.y2milestone( "Firewall enable/disable wasn't modified, skipping..." ) end Progress.NextStage if have_progress if @already_converted && !FileUtils.Exists(@converted_to_services_dbp_file) Builtins.y2milestone( "Writing %1: %2", @converted_to_services_dbp_file, SCR.Write(path(".target.string"), @converted_to_services_dbp_file, "") ) end Progress.Finish if have_progress true end |
- (Boolean) WriteOneRecordPerLine(key_name)
Returns whether records in variable should be written one record on one line.
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# File '../../src/modules/SuSEFirewall.rb', line 254 def WriteOneRecordPerLine(key_name) return true if key_name == nil && key_name == "" Builtins.contains(@one_line_per_record, key_name) end |
- (Boolean) WriteOnly
Helper function for the backward compatibility. See WriteConfiguration(). Remove from code ASAP.
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# File '../../src/modules/SuSEFirewall.rb', line 2761 def WriteOnly WriteConfiguration() end |
- (Boolean) WriteSysconfigSuSEFirewall(variables)
Local function for writing the list of internal variables into
sysconfig.
List of variables is list of keys in SETTINGS map, to sync
configuration
into the disk, use nil
as the last list item.
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# File '../../src/modules/SuSEFirewall.rb', line 413 def WriteSysconfigSuSEFirewall(variables) variables = deep_copy(variables) write_status = true value = "" Builtins.foreach(variables) do |variable| # if variable is undefined, get default value value = Ops.get_string(@SETTINGS, variable) { GetDefaultValue(variable) } if WriteOneRecordPerLine(variable) == true value = Builtins.mergestring(Builtins.splitstring(value, " "), "\n") end write_status = SCR.Write( Builtins.add(path(".sysconfig.SuSEfirewall2"), variable), value ) if !write_status Report.Error( Message.CannotWriteSettingsTo("/etc/sysconfig/SuSEFirewall2") ) raise Break end end write_status = SCR.Write(path(".sysconfig.SuSEfirewall2"), nil) if !write_status Report.Error( Message.CannotWriteSettingsTo("/etc/sysconfig/SuSEFirewall2") ) end write_status end |