h/ dZddlZddlZddlmZddlmZmZmZm Z m Z m Z m Z m Z mZmZmZmZmZmZmZmZmZmZmZmZmZmZmZddlmZmZddl m!Z!m"Z"ddl#m$Z$m%Z%ddl&m'Z'dd l(m)Z)m*Z*dd l+m,Z,m-Z-d Z.d Z/d Z0dZ1dZ2dZ3dZ4dZ5dZ6Gdde Z7Gdde)Z8Gdde8Z9Gdde Z:Gdde7Z;Gdde7Z<Gd d!e7Z=Gd"d#eZ>d$Z?Gd%d&eZ@Gd'd(e@ZAGd)d*e@ZBd+d,d-d.d/d0d1d2d3d4d5 ZCd6d7d8d9d:d;dd?d5 ZDd@ZEGdAd-eBZFGdBd.eBZGGdCd,eBZHGdDd2eBZIGdEd3eBZJGdFd+eBZKGdGd/eBZLGdHd0eBZMGdId1eBZNGdJd4eBZOdKdLdMdNZPdOdPdQdNZQdRZRGdSdKeBZSGdTdLeBZTGdUdMeBZUdVdWiZVdVdXiZWdYZXGdZdWeBZYd[d\d]ZZd^d_d]Z[d`Z\GdadbeZ]Gdcd[eBZ^Gddd\eBZ_idVdedfdgdhdidjdkdldmdndodpdqdrdsdtdudvdwdxdydzd{d|d}d~ddddddddddZ`idVddfddhddddjddlddnddpddddrddtddddddvddxddzdddid|dddd~dddddddddddddddddddddddddddddddddddddddǜ ZadȄZbGdɄdeZcGd˄deeAZdGd̄doeAZeGd̈́dseAZfGd΄dqeAZgGdτdeAZhGdЄdeZiGd҄deAZjGdԄdeAZkGdՄdeZlGdׄdueAZmGd؄d}eAZnGdلdeAZoGdڄdeZpGd܄deAZqGd݄dieAZrGdބdeZsGddmeAZtGdde ZuGddeAZvGddkeAZwGddyeAZxGddeAZyGddeZzGddweAZ{Gdd{eAZ|GddeZ}GddgeAZ~dddddddddd ZGddeZGddeZGdde ZGddeZGddeZGddeZGddeZGddeZGdd eZd ZGd d eZGd deZGddeZdZGddeZGddeZGddeZGddeZGddeZe"deeeeddeeeddeeed d!eeedd"eeedd eeed#deeed#d$eeed!d%eeed!ddS(&a IS-IS Scapy Extension ~~~~~~~~~~~~~~~~~~~~~ :authors: Marcel Patzlaff, mpatzlaff@benocs.com Michal Kaliszan, mkaliszan@benocs.com Tom Zhu, tom.zhu@metaswitch.com :description: This module provides Scapy layers for the Intermediate System to Intermediate System routing protocol as defined in RFC 1195. Currently it (partially) supports the packaging/encoding requirements of the following RFCs: * RFC 1195 (only the TCP/IP related part) * RFC 3358 (optional checksums) * RFC 5301 (dynamic hostname extension) * RFC 5302 (domain-wide prefix distribution) * RFC 5303 (three-way handshake) * RFC 5304 (cryptographic authentication) * RFC 5308 (routing IPv6 with IS-IS) * RFC 8667 (IS-IS extensions for segment routing) :TODO: - packet relations (requests, responses) - support for recent RFCs: * RFC 5305 (traffic engineering) * RFC 5307 (support for G-MPLS) * RFC 5310 (generic cryptographic authentication) * RFC 5316 (inter-AS MPLS and G-MPLS TE) N)conf)BitFieldBitFieldLenFieldBoundStrLenField ByteEnumField ByteFieldConditionalFieldField FieldLenFieldFieldListField FlagsFieldIEEEFloatFieldIP6PrefixFieldIPField IPPrefixFieldIntField LongFieldMACField PacketFieldPacketListField ShortFieldThreeBytesField XIntField XShortField) bind_layersPacket)network_layer_protocol_idsregister_cln_protocol) IP6ListFieldIP6Field)fletcher16_checkbytes) RandStringRandByte)orb hex_byteszv0.0.3cfdd|dDS)Nc34K|]}t|VdSNr%.0xs V/mounts/lovelace/software/anaconda3/lib/python3.11/site-packages/scapy/contrib/isis.py z isis_area2str..Ds(::QIaLL::::::r'.joinsplit)areas r. isis_area2strr5Cs- 88::$**S//::: : ::r'ct|dkrdSt|dd}dd|dzzz|dzdkrdndz}|td|DzS) Nr%02Xz .%02X%02Xz.%02Xc34K|]}t|VdSr)r$r+s r.r/z isis_str2area..Ms())!s1vv))))))r')lentuple)snumbytesfmts r. isis_str2arearBGsv 1vv{{r1QRR5zzH K8q=1 2X\a.Qs(;;QIaLL;;;;;;r'r0r1)sysids r.isis_sysid2strrFPs/ 88;;%++c*:*:;;; ; ;;r'cJdddtd|DzS)Nz%02X%02X.%02X%02X.%02X%02X.c34K|]}t|VdSr)r<r+s r.r/z!isis_str2sysid..Us()<)r?s r.isis_str2sysidrKTs- SbS !E)<))> >>r'c`dt|ddt|dfzS)Nz%s-%02XrH)rSr$rJs r.isis_str2lspidrXds, #2#//QrU< <Q  2t~&& ! !A HJJ= CC{S  r'N)rnrorpr_rrrr'r.rtrts2444 ! ! ! ! !r'rtc eZdZdfd ZxZS)_ISIS_RandAreaIdNcdd|jdz dzzz|jdz dzdkrdndz}tt|||t jdd|_dS||_dS) Nrvz.**r8r:rr7z.* )rxsuperrr_randomrandint)r`rxr{ __class__s r.r_z_ISIS_RandAreaId.__init__s dnq(Q. / NQ&!+11BBt  %%..x888  #^Ar22DNNN&DNNNr'r))rnrorpr_ __classcell__)rs@r.rrs= ' ' ' ' ' ' ' ' ' 'r'rc>eZdZdgZdZdZdZdZdZdZ dZ d S) ISIS_AreaIdField length_fromc@tj|||||_dSr))r r_r)r`rarbrs r.r_zISIS_AreaIdField.__init__s$ tT7+++&r'c t|Sr))r5res r.rgzISIS_AreaIdField.i2mQr'c t|Sr))rBres r.rizISIS_AreaIdField.m2irr'c>|dSt|}||dzz dzS)Nrr:r=)r`rfr-tmp_lens r.i2lenzISIS_AreaIdField.i2lens+ 91a&&7a<(Q..r'c~|||}|tjdt|z|zS)N!%is)rgstructpackr=)r`rfr?r~svals r.addfieldzISIS_AreaIdField.addfields7xxS!!6;vD 148888r'c ||}||d||tjd|z|d|dfS)Nrr)rrirunpack)r`rfr?r@s r.getfieldzISIS_AreaIdField.getfieldsU##C((|TXXc6=(9JAixiL+Y+YZ[+\]]]]r'ctSr))rr`s r.randvalzISIS_AreaIdField.randvals!!!r'N) rnrorprqr_rgrirrrrrrr'r.rrsI'''      ///999^^^"""""r'rceZdZdZdZdS)ISIS_SystemIdFieldcXt|||dttdSN)rZr_rFrKr`rarbs r.r_zISIS_SystemIdField.__init__&""4w>>ZZZZZr'c tdS)Nz**.**.**rtrs r.rzISIS_SystemIdField.randvalsJ'''r'Nrnrorpr_rrrr'r.rrs5[[[(((((r'rceZdZdZdZdS)ISIS_NodeIdFieldcXt|||dttdS)N)rZr_rQrSrs r.r_zISIS_NodeIdField.__init__s&""4w?O\\\\\r'c tdS)Nz **.**.**.*rrs r.rzISIS_NodeIdField.randvalsL)))r'Nrrrr'r.rrs5]]]*****r'rceZdZdZdZdS)ISIS_LspIdFieldcXt|||dttdSN)rZr_rVrXrs r.r_zISIS_LspIdField.__init__rr'c tdS)Nz **.**.**.*-*rrs r.rzISIS_LspIdField.randvalsN+++r'Nrrrr'r.rrs5[[[,,,,,r'rceZdZ ddZdS)ISIS_CircuitTypeField circuittyper:rNcB|gd}tj|||||dS)N)L1L2r0r1r2r3r4r5)r r_)r`rarbsizenamess r.r_zISIS_CircuitTypeField.__init__s1 =DDDED$u=====r')rr:rNrnrorpr_rrr'r.rrs.;<>>>>>>r'rc tj}t|dkr?t|d}|||}t |}||fi|SNr:r)r raw_layerr=r$getglobals) tlv_classes defaultnamepkargsclstlvtypeclsnames r._ISIS_GuessTlvClass_Helperrs\ .C 1vv{{ad))//';77ii  3q??E??r'cfeZdZeddeddddeddd gZd ZdS) _ISIS_GenericTlv_Basetyperr=Nr~B length_ofrAr7c|jSr)rrfs r.z_ISIS_GenericTlv_Base.sswr'rctjSr)r padding_layerr`rs r.guess_payload_classz)_ISIS_GenericTlv_Base.guess_payload_class !!r')rnrorprr r fields_descrrrr'r.rrsi9VQ'' =3GGG##E2;N;NOOOQK"""""r'rceZdZdZdS)ISIS_GenericTlvzISIS Generic TLVNrnrorprarrr'r.rrs DDDr'rceZdZdZdS)ISIS_GenericSubTlvzISIS Generic Sub-TLVNrrrr'r.rrs !DDDr'rISIS_AdministrativeGroupSubTlv%ISIS_LinkLocalRemoteIdentifiersSubTlvISIS_IPv4InterfaceAddressSubTlvISIS_IPv4NeighborAddressSubTlvISIS_MaximumLinkBandwidthSubTlv)ISIS_MaximumReservableLinkBandwidthSubTlvISIS_UnreservedBandwidthSubTlvISIS_IPv6InterfaceAddressSubTlvISIS_IPv6NeighborAddressSubTlvISIS_TEDefaultMetricSubTlv) rr rzAdministrative Group (Color)zLink Local/Remote IdentifierszIPv4 Interface AddresszIPv4 Neighbor AddresszMaximum Link Bandwidthz!Maximum Reservable Link BandwidthzUnreserved BandwidthzIPv6 Interface AddresszIPv6 Neighbor AddresszTE Default Metricc *ttd|fi|SNr)r_isis_subtlv_classes_1rrs r._ISIS_GuessSubTlvClass_1r %&<>RTU _ _Y^ _ __r'c`eZdZdZeddeeddddedd gZdS) rzISIS IPv4 Interface Address (S)rrr=Naddressrr0.0.0.0 rnrorprar_isis_subtlv_names_1r rrrrr'r.rrsQ ,D =,@AA = sKKK79i002KKKr'c`eZdZdZeddeeddddedd gZdS) rzISIS IPv4 Neighbor Address (S)rrr=Nrrrrrrrr'r.rr%sQ +D =,@AA = sKKK79i002KKKr'cteZdZdZeddeedddedd ed d gZd S) rz&ISIS Link Local/Remote Identifiers (S)rrr=rrrAlocalid0remoteidN) rnrorprarrr rrrrr'r.rr,s^ 3D =,@AA =s3338Is++8J,,.KKKr'c`eZdZdZeddeeddddedd gZdS) rzISIS IPv6 Interface Address (S)rrr=Nrrr:: rnrorprarrr r rrrr'r.rr4sQ ,D =-ABB = sKKK8It,,.KKKr'c`eZdZdZeddeeddddedd gZdS) rzISIS IPv6 Neighbor Address (S)rrr=Nrrrr r rrr'r.rr;sQ +D =-ABB = sKKK8It,,.KKKr'c`eZdZdZeddeeddddedd gZdS) rz#Administrative Group SubTLV (Color)coderr=N admingrouprrz0.0.0.1rrrr'r.rrBsQ 0D =,@AA = #NNN7<335KKKr'c`eZdZdZeddeeddddedd gZdS) rzMaximum Link Bandwidth SubTLVrrr=Nmaxbwrr rnrorprarrr rrrrr'r.rrIsQ *D =,@AA =SIII!>'4002KKKr'c`eZdZdZeddeeddddedd gZdS) rz(Maximum Reservable Link Bandwidth SubTLVrrr=Nmaxrsvbwrrrrrrr'r.rrPsQ 5D =-ABB = LLL!>*d335KKKr'c eZdZdZeddeeddddedgd ed d d gZ dS)rzUnreserved Bandwidth SubTLVrrr=Nunrsvbwrr)rrrrrrrrr7rc|jdz SNrrrs r.rz'ISIS_UnreservedBandwidthSubTlv.[s QTQX[\Q\r' count_from) rnrorprarrr r rrrrr'r.rrWs (D =-ABB = sKKK!>)-]-]-]_m_mnprv_w_wE\E\]]]^KKKr'cdeZdZdZeddeeddddd edd gZdS) rzTE Default Metric SubTLVrrr=Ntemetricc |dz SNr8rrrfr-s r.rz#ISIS_TEDefaultMetricSubTlv.as YZ]^Y^r'rradjustrAr) rnrorprarrr rrrrr'r.rr^sX %D =-ABB = K^K^dghhh"?:t446KKKr'!ISIS_32bitAdministrativeTagSubTlv!ISIS_64bitAdministrativeTagSubTlv"ISIS_PrefixSegmentIdentifierSubTlv)r8r:rz32-bit Administrative Tagz64-bit Administrative TagzPrefix Segment Identifierc *ttd|fi|Sr)r_isis_subtlv_classes_2rs r._ISIS_GuessSubTlvClass_2r*urr'c |eZdZdZeddeeddddedged d d gZ dS) r%z"ISIS 32-bit Administrative Tag (S)rr8r=Ntagsrrr7rc|jdzSrrrs r.rz*ISIS_32bitAdministrativeTagSubTlv.}sVYV]abVbr'r) rnrorprar_isis_subtlv_names_2r r rrrrr'r.r%r%ysg /D =,@AA =CHHH!>&"hhr1ooJbJbccceKKKr'c |eZdZdZeddeeddddedged d d gZ dS) r&z"ISIS 64-bit Administrative Tag (S)rr:r=Nr,rrr7rc|jdzSrrrs r.rz*ISIS_64bitAdministrativeTagSubTlv.sWZW^bcWcr'r) rnrorprarr.r r rrrrr'r.r&r&si /D =,@AA =CHHH!>&"iiA.>.>KcKcdddfKKKr'c eZdZdZeddeeddedddgd ed dee d dd ee d ddgZ dS)r'zISIS Prefix SID sub TLVrrr=rflagsrr)res1res2LVEPNR algorithmsidc|jdkSNrrrs r.rz+ISIS_PrefixSegmentIdentifierSubTlv. 1 r'idxc|jdkSrrrs r.rz+ISIS_PrefixSegmentIdentifierSubTlv.r?r'N) rnrorprarr.rr r rrrrrr'r.r'r's $D =,@AA9UA&&:1EEEGG9[!,,##OOE1$=$=$<$<>>##HHUA$6$6$<$<>> ?KKKr'r8ISIS_SIDLabelSubTLVzISIS SID/Label sub TLVc *ttd|fi|Sr)r_isis_subtlv_classes_3rs r._ISIS_GuessSubTlvClass_3rE. % 4a B B;@ B BBr'c eZdZdZeddeeddeedddee d dd gZ d S) rBzISIS SID Label sub TLVrr8r=rr<rc|jdkS)Nrrrs r.rzISIS_SIDLabelSubTLV. 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CGaKr'r) rnrorprarrKr r rrSrrrr'r.rLrLs %D fa!566  #''      Q F F F H H    $//  1 1 1KKKr'c ~eZdZdZeddeeddddedd ged d d gZ dS) rMzISIS SR Algorithm sub TLVrrNr=N algorithmsrrrr7c|jSr)rrs r.rzISIS_SRAlgorithmSubTLV.s#'r'r) rnrorprar_isis_subtlv_names_4r r rrrrr'r.rMrMss &D fb"677 eT\sCCC  C Ib!  ))  + + +KKKr' ISIS_AreaTlvr:ISIS_IsReachabilityTlvrISIS_IsNeighbourTlvrISIS_PaddingTlvrISIS_LspEntryTlvrISIS_AuthenticationTlvrISIS_ChecksumTlvISIS_BufferSizeTlvISIS_ExtendedIsReachabilityTlvISIS_InternalIpReachabilityTlvISIS_ProtocolsSupportedTlvISIS_ExternalIpReachabilityTlvISIS_IpInterfaceAddressTlvISIS_ExtendedIpReachabilityTlvISIS_DynamicHostnameTlvISIS_Ipv6InterfaceAddressTlvISIS_Ipv6ReachabilityTlvISIS_P2PAdjacencyStateTlvISIS_RouterCapabilityTlv)zArea TLVzIS Reachability TLVzIS Neighbour TLVrzInstance Identifier TLVz Padding TLVzLSP Entries TLVzAuthentication TLVzOptional Checksum TLVrz#Purge Originator Identification TLVzLSP Buffer Size TLVzExtended IS-Reachability TLVzIS Neighbour Attribute TLVz IS Alias IDzIP Internal Reachability TLVzProtocols Supported TLVzIP External Reachability TLVz-Inter-Domain Routing Protocol Information TLVzIP Interface Address TLVz!Traffic Engineering Router ID TLVzExtended IP Reachability TLVzDynamic Hostname TLVz GMPLS Shared Risk Link Group TLVzIPv6 Shared Risk Link Group TLVz&IPv6 Traffic Engineering Router ID TLVz%Inter-AS Reachability Information TLVzGroup Address TLVz(Multi-Topology-Aware Port Capability TLVzMulti-Topology Capability TLVzTRILL Neighbour TLVzMAC-Reachability TLVzBFD-Enabled TLVz Restart TLVz'Multi-Topology Intermediate Systems TLVz*Multi-Topology IS Neighbour Attributes TLVzMulti-Topology TLVzIPv6 Interface Address TLVz!IPv6 Global Interface Address TLVz$Multi-Topology IPv4 Reachability TLVzIPv6 Reachability TLVz$Multi-Topology IPv6 Reachability TLVz&Point-to-Point Three-Way Adjacency TLVzIS-IS Router Capability TLVzGeneric Information TLV) rrrrc *ttd|fi|S)Nr)r_isis_tlv_classesrs r._ISIS_GuessTlvClassr:s %&79JA W WQV W WWr'cTeZdZdZeddddeddd gZd ZdS) ISIS_AreaEntryzISIS Area EntryarealenNareaidrr49c|jSr))rrs r.rzISIS_AreaEntry.AsCKr'rc d|fSrVrrrWs r.rXzISIS_AreaEntry.extract_paddingCrYr')rnrorprar rrrXrrr'r.rr>s_ D =DH#NNN##Hd@W@WXXXZKr'rcheZdZdZeddeeddddedged gZ dS) riz ISIS Area TLVrr8r=Nareasrrc|jSr)rr-s r.rzISIS_AreaTlv.Ks VWV[r'r) rnrorprar_isis_tlv_namesr rrrrrr'r.ririGsZ D =O<< =SIII"?7BOO\\\^KKKr'c eZdZdZeddeeddddd ed d d d deddddgZdS)rnzISIS Authentication TLVrrr=Npasswordc |dzSr!rrr"s r.rzISIS_AuthenticationTlv.Q Z[^_Z_r'rr#authtyper8PlainzHMAC-MD5)r8r7c|jdz Sr!rrs r.rzISIS_AuthenticationTlv.SsX[X_bcXcr')maxlenr rnrorprarrr rrrrr'r.rnrnNs} $D =_== = K_K_ehiii =QG0L0LMM##J3LcLcdddfKKKr'cZeZdZdZeddeeddeddgZdS) rqzISIS Buffer Size TLVrrpr=r: lspbuffersizeiN) rnrorprarrrrrrrr'r.rqrqVsI !D =_==9UA&&:ot446KKKr'cZeZdZdZeddeeddeddgZdS)rozISIS Optional Checksum TLVrrr=r:checksumN) rnrorprarrrrrrrr'r.roro]sI 'D =_==9UA&&;z4002KKKr'cfeZdZdZeddeeddddedd d gZdS) rzISIS Dynamic Hostname 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