feat: Working impl with offer / ack
This commit is contained in:
Adrian Rumpold
230
types.go
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230
types.go
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package main
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import (
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"net"
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"time"
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)
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type OptionCode byte
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// DHCPv4 Options
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const (
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OptionPad OptionCode = 0
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OptionSubnetMask OptionCode = 1
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OptionTimeOffset OptionCode = 2
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OptionRouter OptionCode = 3
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OptionTimeServer OptionCode = 4
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OptionNameServer OptionCode = 5
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OptionDomainNameServer OptionCode = 6
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OptionLogServer OptionCode = 7
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OptionQuoteServer OptionCode = 8
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OptionLPRServer OptionCode = 9
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OptionImpressServer OptionCode = 10
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OptionResourceLocationServer OptionCode = 11
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OptionHostName OptionCode = 12
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OptionBootFileSize OptionCode = 13
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OptionMeritDumpFile OptionCode = 14
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OptionDomainName OptionCode = 15
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OptionSwapServer OptionCode = 16
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OptionRootPath OptionCode = 17
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OptionExtensionsPath OptionCode = 18
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OptionIPForwarding OptionCode = 19
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OptionNonLocalSourceRouting OptionCode = 20
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OptionPolicyFilter OptionCode = 21
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OptionMaximumDatagramAssemblySize OptionCode = 22
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OptionDefaultIPTTL OptionCode = 23
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OptionPathMTUAgingTimeout OptionCode = 24
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OptionPathMTUPlateauTable OptionCode = 25
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OptionInterfaceMTU OptionCode = 26
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OptionAllSubnetsAreLocal OptionCode = 27
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OptionBroadcastAddress OptionCode = 28
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OptionPerformMaskDiscovery OptionCode = 29
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OptionMaskSupplier OptionCode = 30
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OptionPerformRouterDiscovery OptionCode = 31
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OptionRouterSolicitationAddress OptionCode = 32
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OptionStaticRoutingTable OptionCode = 33
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OptionTrailerEncapsulation OptionCode = 34
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OptionArpCacheTimeout OptionCode = 35
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OptionEthernetEncapsulation OptionCode = 36
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OptionDefaulTCPTTL OptionCode = 37
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OptionTCPKeepaliveInterval OptionCode = 38
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OptionTCPKeepaliveGarbage OptionCode = 39
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OptionNetworkInformationServiceDomain OptionCode = 40
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OptionNetworkInformationServers OptionCode = 41
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OptionNTPServers OptionCode = 42
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OptionVendorSpecificInformation OptionCode = 43
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OptionNetBIOSOverTCPIPNameServer OptionCode = 44
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OptionNetBIOSOverTCPIPDatagramDistributionServer OptionCode = 45
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OptionNetBIOSOverTCPIPNodeType OptionCode = 46
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OptionNetBIOSOverTCPIPScope OptionCode = 47
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OptionXWindowSystemFontServer OptionCode = 48
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OptionXWindowSystemDisplayManger OptionCode = 49
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OptionRequestedIPAddress OptionCode = 50
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OptionIPAddressLeaseTime OptionCode = 51
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OptionOptionOverload OptionCode = 52
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OptionDHCPMessageType OptionCode = 53
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OptionServerIdentifier OptionCode = 54
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OptionParameterRequestList OptionCode = 55
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OptionMessage OptionCode = 56
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OptionMaximumDHCPMessageSize OptionCode = 57
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OptionRenewTimeValue OptionCode = 58
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OptionRebindingTimeValue OptionCode = 59
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OptionClassIdentifier OptionCode = 60
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OptionClientIdentifier OptionCode = 61
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OptionNetWareIPDomainName OptionCode = 62
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OptionNetWareIPInformation OptionCode = 63
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OptionNetworkInformationServicePlusDomain OptionCode = 64
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OptionNetworkInformationServicePlusServers OptionCode = 65
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OptionTFTPServerName OptionCode = 66
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OptionBootfileName OptionCode = 67
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OptionMobileIPHomeAgent OptionCode = 68
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OptionSimpleMailTransportProtocolServer OptionCode = 69
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OptionPostOfficeProtocolServer OptionCode = 70
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OptionNetworkNewsTransportProtocolServer OptionCode = 71
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OptionDefaultWorldWideWebServer OptionCode = 72
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OptionDefaultFingerServer OptionCode = 73
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OptionDefaultInternetRelayChatServer OptionCode = 74
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OptionStreetTalkServer OptionCode = 75
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OptionStreetTalkDirectoryAssistanceServer OptionCode = 76
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OptionUserClassInformation OptionCode = 77
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OptionSLPDirectoryAgent OptionCode = 78
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OptionSLPServiceScope OptionCode = 79
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OptionRapidCommit OptionCode = 80
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OptionFQDN OptionCode = 81
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OptionRelayAgentInformation OptionCode = 82
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OptionInternetStorageNameService OptionCode = 83
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// Option 84 returned in RFC 3679
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OptionNDSServers OptionCode = 85
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OptionNDSTreeName OptionCode = 86
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OptionNDSContext OptionCode = 87
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OptionBCMCSControllerDomainNameList OptionCode = 88
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OptionBCMCSControllerIPv4AddressList OptionCode = 89
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OptionAuthentication OptionCode = 90
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OptionClientLastTransactionTime OptionCode = 91
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OptionAssociatedIP OptionCode = 92
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OptionClientSystemArchitectureType OptionCode = 93
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OptionClientNetworkInterfaceIdentifier OptionCode = 94
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OptionLDAP OptionCode = 95
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// Option 96 returned in RFC 3679
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OptionClientMachineIdentifier OptionCode = 97
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OptionOpenGroupUserAuthentication OptionCode = 98
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OptionGeoConfCivic OptionCode = 99
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OptionIEEE10031TZString OptionCode = 100
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OptionReferenceToTZDatabase OptionCode = 101
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// Options 102-111 returned in RFC 3679
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OptionNetInfoParentServerAddress OptionCode = 112
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OptionNetInfoParentServerTag OptionCode = 113
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OptionURL OptionCode = 114
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// Option 115 returned in RFC 3679
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OptionAutoConfigure OptionCode = 116
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OptionNameServiceSearch OptionCode = 117
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OptionSubnetSelection OptionCode = 118
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OptionDNSDomainSearchList OptionCode = 119
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OptionSIPServers OptionCode = 120
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OptionClasslessStaticRoute OptionCode = 121
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OptionCCC OptionCode = 122
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OptionGeoConf OptionCode = 123
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OptionVendorIdentifyingVendorClass OptionCode = 124
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OptionVendorIdentifyingVendorSpecific OptionCode = 125
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// Options 126-127 returned in RFC 3679
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OptionTFTPServerIPAddress OptionCode = 128
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OptionCallServerIPAddress OptionCode = 129
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OptionDiscriminationString OptionCode = 130
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OptionRemoteStatisticsServerIPAddress OptionCode = 131
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Option8021PVLANID OptionCode = 132
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Option8021QL2Priority OptionCode = 133
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OptionDiffservCodePoint OptionCode = 134
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OptionHTTPProxyForPhoneSpecificApplications OptionCode = 135
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OptionPANAAuthenticationAgent OptionCode = 136
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OptionLoSTServer OptionCode = 137
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OptionCAPWAPAccessControllerAddresses OptionCode = 138
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OptionOPTIONIPv4AddressMoS OptionCode = 139
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OptionOPTIONIPv4FQDNMoS OptionCode = 140
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OptionSIPUAConfigurationServiceDomains OptionCode = 141
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OptionOPTIONIPv4AddressANDSF OptionCode = 142
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OptionOPTIONIPv6AddressANDSF OptionCode = 143
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// Options 144-149 returned in RFC 3679
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OptionTFTPServerAddress OptionCode = 150
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OptionStatusCode OptionCode = 151
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OptionBaseTime OptionCode = 152
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OptionStartTimeOfState OptionCode = 153
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OptionQueryStartTime OptionCode = 154
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OptionQueryEndTime OptionCode = 155
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OptionDHCPState OptionCode = 156
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OptionDataSource OptionCode = 157
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// Options 158-174 returned in RFC 3679
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OptionEtherboot OptionCode = 175
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OptionIPTelephone OptionCode = 176
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OptionEtherbootPacketCableAndCableHome OptionCode = 177
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// Options 178-207 returned in RFC 3679
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OptionPXELinuxMagicString OptionCode = 208
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OptionPXELinuxConfigFile OptionCode = 209
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OptionPXELinuxPathPrefix OptionCode = 210
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OptionPXELinuxRebootTime OptionCode = 211
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OptionOPTION6RD OptionCode = 212
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OptionOPTIONv4AccessDomain OptionCode = 213
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// Options 214-219 returned in RFC 3679
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OptionSubnetAllocation OptionCode = 220
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OptionVirtualSubnetAllocation OptionCode = 221
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// Options 222-223 returned in RFC 3679
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// Options 224-254 are reserved for private use
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OptionEnd OptionCode = 255
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)
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type DhcpOp byte
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const (
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BOOTREQUEST DhcpOp = iota + 1
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BOOTREPLY
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)
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// MessageType represents the possible DHCP message types - DISCOVER, OFFER, etc
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type MessageType byte
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// DHCP message types
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const (
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// MessageTypeNone is not a real message type, it is used by certain
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// functions to signal that no explicit message type is requested
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MessageTypeNone MessageType = iota
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MessageTypeDiscover
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MessageTypeOffer
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MessageTypeRequest
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MessageTypeDecline
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MessageTypeAck
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MessageTypeNak
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MessageTypeRelease
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MessageTypeInform
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)
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type LeaseState uint8
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type DhcpMessage struct {
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Op DhcpOp
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Htype MessageType
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Hlen byte
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Hops byte
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Xid uint32
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Secs uint16
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Flags uint16
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Ciaddr uint32
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Yiaddr uint32
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Siaddr uint32
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Giaddr uint32
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Chaddr [16]byte
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Sname [64]byte
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File [128]byte
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Magic [4]byte
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}
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const (
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Offered LeaseState = iota
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Requested
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)
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type Lease struct {
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TransactionId uint32
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TTL time.Time
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State LeaseState
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ClientAddr [16]byte
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Address net.IP
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}
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