diff options
Diffstat (limited to 'vendor/github.com/google/gopacket/layers/icmp4.go')
| -rw-r--r-- | vendor/github.com/google/gopacket/layers/icmp4.go | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/vendor/github.com/google/gopacket/layers/icmp4.go b/vendor/github.com/google/gopacket/layers/icmp4.go deleted file mode 100644 index bd3f03f..0000000 --- a/vendor/github.com/google/gopacket/layers/icmp4.go +++ /dev/null @@ -1,267 +0,0 @@ -// Copyright 2012 Google, Inc. All rights reserved. -// Copyright 2009-2011 Andreas Krennmair. All rights reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the LICENSE file in the root of the source -// tree. - -package layers - -import ( - "encoding/binary" - "errors" - "fmt" - "reflect" - - "github.com/google/gopacket" -) - -const ( - ICMPv4TypeEchoReply = 0 - ICMPv4TypeDestinationUnreachable = 3 - ICMPv4TypeSourceQuench = 4 - ICMPv4TypeRedirect = 5 - ICMPv4TypeEchoRequest = 8 - ICMPv4TypeRouterAdvertisement = 9 - ICMPv4TypeRouterSolicitation = 10 - ICMPv4TypeTimeExceeded = 11 - ICMPv4TypeParameterProblem = 12 - ICMPv4TypeTimestampRequest = 13 - ICMPv4TypeTimestampReply = 14 - ICMPv4TypeInfoRequest = 15 - ICMPv4TypeInfoReply = 16 - ICMPv4TypeAddressMaskRequest = 17 - ICMPv4TypeAddressMaskReply = 18 -) - -const ( - // DestinationUnreachable - ICMPv4CodeNet = 0 - ICMPv4CodeHost = 1 - ICMPv4CodeProtocol = 2 - ICMPv4CodePort = 3 - ICMPv4CodeFragmentationNeeded = 4 - ICMPv4CodeSourceRoutingFailed = 5 - ICMPv4CodeNetUnknown = 6 - ICMPv4CodeHostUnknown = 7 - ICMPv4CodeSourceIsolated = 8 - ICMPv4CodeNetAdminProhibited = 9 - ICMPv4CodeHostAdminProhibited = 10 - ICMPv4CodeNetTOS = 11 - ICMPv4CodeHostTOS = 12 - ICMPv4CodeCommAdminProhibited = 13 - ICMPv4CodeHostPrecedence = 14 - ICMPv4CodePrecedenceCutoff = 15 - - // TimeExceeded - ICMPv4CodeTTLExceeded = 0 - ICMPv4CodeFragmentReassemblyTimeExceeded = 1 - - // ParameterProblem - ICMPv4CodePointerIndicatesError = 0 - ICMPv4CodeMissingOption = 1 - ICMPv4CodeBadLength = 2 - - // Redirect - // ICMPv4CodeNet = same as for DestinationUnreachable - // ICMPv4CodeHost = same as for DestinationUnreachable - ICMPv4CodeTOSNet = 2 - ICMPv4CodeTOSHost = 3 -) - -type icmpv4TypeCodeInfoStruct struct { - typeStr string - codeStr *map[uint8]string -} - -var ( - icmpv4TypeCodeInfo = map[uint8]icmpv4TypeCodeInfoStruct{ - ICMPv4TypeDestinationUnreachable: icmpv4TypeCodeInfoStruct{ - "DestinationUnreachable", &map[uint8]string{ - ICMPv4CodeNet: "Net", - ICMPv4CodeHost: "Host", - ICMPv4CodeProtocol: "Protocol", - ICMPv4CodePort: "Port", - ICMPv4CodeFragmentationNeeded: "FragmentationNeeded", - ICMPv4CodeSourceRoutingFailed: "SourceRoutingFailed", - ICMPv4CodeNetUnknown: "NetUnknown", - ICMPv4CodeHostUnknown: "HostUnknown", - ICMPv4CodeSourceIsolated: "SourceIsolated", - ICMPv4CodeNetAdminProhibited: "NetAdminProhibited", - ICMPv4CodeHostAdminProhibited: "HostAdminProhibited", - ICMPv4CodeNetTOS: "NetTOS", - ICMPv4CodeHostTOS: "HostTOS", - ICMPv4CodeCommAdminProhibited: "CommAdminProhibited", - ICMPv4CodeHostPrecedence: "HostPrecedence", - ICMPv4CodePrecedenceCutoff: "PrecedenceCutoff", - }, - }, - ICMPv4TypeTimeExceeded: icmpv4TypeCodeInfoStruct{ - "TimeExceeded", &map[uint8]string{ - ICMPv4CodeTTLExceeded: "TTLExceeded", - ICMPv4CodeFragmentReassemblyTimeExceeded: "FragmentReassemblyTimeExceeded", - }, - }, - ICMPv4TypeParameterProblem: icmpv4TypeCodeInfoStruct{ - "ParameterProblem", &map[uint8]string{ - ICMPv4CodePointerIndicatesError: "PointerIndicatesError", - ICMPv4CodeMissingOption: "MissingOption", - ICMPv4CodeBadLength: "BadLength", - }, - }, - ICMPv4TypeSourceQuench: icmpv4TypeCodeInfoStruct{ - "SourceQuench", nil, - }, - ICMPv4TypeRedirect: icmpv4TypeCodeInfoStruct{ - "Redirect", &map[uint8]string{ - ICMPv4CodeNet: "Net", - ICMPv4CodeHost: "Host", - ICMPv4CodeTOSNet: "TOS+Net", - ICMPv4CodeTOSHost: "TOS+Host", - }, - }, - ICMPv4TypeEchoRequest: icmpv4TypeCodeInfoStruct{ - "EchoRequest", nil, - }, - ICMPv4TypeEchoReply: icmpv4TypeCodeInfoStruct{ - "EchoReply", nil, - }, - ICMPv4TypeTimestampRequest: icmpv4TypeCodeInfoStruct{ - "TimestampRequest", nil, - }, - ICMPv4TypeTimestampReply: icmpv4TypeCodeInfoStruct{ - "TimestampReply", nil, - }, - ICMPv4TypeInfoRequest: icmpv4TypeCodeInfoStruct{ - "InfoRequest", nil, - }, - ICMPv4TypeInfoReply: icmpv4TypeCodeInfoStruct{ - "InfoReply", nil, - }, - ICMPv4TypeRouterSolicitation: icmpv4TypeCodeInfoStruct{ - "RouterSolicitation", nil, - }, - ICMPv4TypeRouterAdvertisement: icmpv4TypeCodeInfoStruct{ - "RouterAdvertisement", nil, - }, - ICMPv4TypeAddressMaskRequest: icmpv4TypeCodeInfoStruct{ - "AddressMaskRequest", nil, - }, - ICMPv4TypeAddressMaskReply: icmpv4TypeCodeInfoStruct{ - "AddressMaskReply", nil, - }, - } -) - -type ICMPv4TypeCode uint16 - -// Type returns the ICMPv4 type field. -func (a ICMPv4TypeCode) Type() uint8 { - return uint8(a >> 8) -} - -// Code returns the ICMPv4 code field. -func (a ICMPv4TypeCode) Code() uint8 { - return uint8(a) -} - -func (a ICMPv4TypeCode) String() string { - t, c := a.Type(), a.Code() - strInfo, ok := icmpv4TypeCodeInfo[t] - if !ok { - // Unknown ICMPv4 type field - return fmt.Sprintf("%d(%d)", t, c) - } - typeStr := strInfo.typeStr - if strInfo.codeStr == nil && c == 0 { - // The ICMPv4 type does not make use of the code field - return fmt.Sprintf("%s", strInfo.typeStr) - } - if strInfo.codeStr == nil && c != 0 { - // The ICMPv4 type does not make use of the code field, but it is present anyway - return fmt.Sprintf("%s(Code: %d)", typeStr, c) - } - codeStr, ok := (*strInfo.codeStr)[c] - if !ok { - // We don't know this ICMPv4 code; print the numerical value - return fmt.Sprintf("%s(Code: %d)", typeStr, c) - } - return fmt.Sprintf("%s(%s)", typeStr, codeStr) -} - -func (a ICMPv4TypeCode) GoString() string { - t := reflect.TypeOf(a) - return fmt.Sprintf("%s(%d, %d)", t.String(), a.Type(), a.Code()) -} - -// SerializeTo writes the ICMPv4TypeCode value to the 'bytes' buffer. -func (a ICMPv4TypeCode) SerializeTo(bytes []byte) { - binary.BigEndian.PutUint16(bytes, uint16(a)) -} - -// CreateICMPv4TypeCode is a convenience function to create an ICMPv4TypeCode -// gopacket type from the ICMPv4 type and code values. -func CreateICMPv4TypeCode(typ uint8, code uint8) ICMPv4TypeCode { - return ICMPv4TypeCode(binary.BigEndian.Uint16([]byte{typ, code})) -} - -// ICMPv4 is the layer for IPv4 ICMP packet data. -type ICMPv4 struct { - BaseLayer - TypeCode ICMPv4TypeCode - Checksum uint16 - Id uint16 - Seq uint16 -} - -// LayerType returns LayerTypeICMPv4. -func (i *ICMPv4) LayerType() gopacket.LayerType { return LayerTypeICMPv4 } - -// DecodeFromBytes decodes the given bytes into this layer. -func (i *ICMPv4) DecodeFromBytes(data []byte, df gopacket.DecodeFeedback) error { - if len(data) < 8 { - df.SetTruncated() - return errors.New("ICMP layer less then 8 bytes for ICMPv4 packet") - } - i.TypeCode = CreateICMPv4TypeCode(data[0], data[1]) - i.Checksum = binary.BigEndian.Uint16(data[2:4]) - i.Id = binary.BigEndian.Uint16(data[4:6]) - i.Seq = binary.BigEndian.Uint16(data[6:8]) - i.BaseLayer = BaseLayer{data[:8], data[8:]} - return nil -} - -// SerializeTo writes the serialized form of this layer into the -// SerializationBuffer, implementing gopacket.SerializableLayer. -// See the docs for gopacket.SerializableLayer for more info. -func (i *ICMPv4) SerializeTo(b gopacket.SerializeBuffer, opts gopacket.SerializeOptions) error { - bytes, err := b.PrependBytes(8) - if err != nil { - return err - } - i.TypeCode.SerializeTo(bytes) - binary.BigEndian.PutUint16(bytes[4:], i.Id) - binary.BigEndian.PutUint16(bytes[6:], i.Seq) - if opts.ComputeChecksums { - bytes[2] = 0 - bytes[3] = 0 - i.Checksum = tcpipChecksum(b.Bytes(), 0) - } - binary.BigEndian.PutUint16(bytes[2:], i.Checksum) - return nil -} - -// CanDecode returns the set of layer types that this DecodingLayer can decode. -func (i *ICMPv4) CanDecode() gopacket.LayerClass { - return LayerTypeICMPv4 -} - -// NextLayerType returns the layer type contained by this DecodingLayer. -func (i *ICMPv4) NextLayerType() gopacket.LayerType { - return gopacket.LayerTypePayload -} - -func decodeICMPv4(data []byte, p gopacket.PacketBuilder) error { - i := &ICMPv4{} - return decodingLayerDecoder(i, data, p) -} |