diff options
author | Milan Lenco <milan.lenco@pantheon.tech> | 2017-10-11 16:40:58 +0200 |
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committer | Milan Lenco <milan.lenco@pantheon.tech> | 2017-10-13 08:40:37 +0200 |
commit | 3f1edad4e6ba0a7876750aea55507fae14d8badf (patch) | |
tree | a473997249d9ba7deb70b1076d14e4c4ed029a43 /vendor/github.com/google/gopacket/layers/ports.go | |
parent | 8b66677c2382a8e739d437621de4473d5ec0b9f1 (diff) |
ODPM 266: Go-libmemif + 2 examples.
Change-Id: Icdb9b9eb2314eff6c96afe7996fcf2728291de4a
Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
Diffstat (limited to 'vendor/github.com/google/gopacket/layers/ports.go')
-rw-r--r-- | vendor/github.com/google/gopacket/layers/ports.go | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/vendor/github.com/google/gopacket/layers/ports.go b/vendor/github.com/google/gopacket/layers/ports.go new file mode 100644 index 0000000..431358c --- /dev/null +++ b/vendor/github.com/google/gopacket/layers/ports.go @@ -0,0 +1,140 @@ +// Copyright 2012 Google, Inc. 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 ( + "fmt" + "strconv" + + "github.com/google/gopacket" +) + +// TCPPort is a port in a TCP layer. +type TCPPort uint16 + +// UDPPort is a port in a UDP layer. +type UDPPort uint16 + +// RUDPPort is a port in a RUDP layer. +type RUDPPort uint8 + +// SCTPPort is a port in a SCTP layer. +type SCTPPort uint16 + +// UDPLitePort is a port in a UDPLite layer. +type UDPLitePort uint16 + +// RUDPPortNames contains the string names for all RUDP ports. +var RUDPPortNames = map[RUDPPort]string{} + +// UDPLitePortNames contains the string names for all UDPLite ports. +var UDPLitePortNames = map[UDPLitePort]string{} + +// {TCP,UDP,SCTP}PortNames can be found in iana_ports.go + +// String returns the port as "number(name)" if there's a well-known port name, +// or just "number" if there isn't. Well-known names are stored in +// TCPPortNames. +func (a TCPPort) String() string { + if name, ok := TCPPortNames[a]; ok { + return fmt.Sprintf("%d(%s)", a, name) + } + return strconv.Itoa(int(a)) +} + +// LayerType returns a LayerType that would be able to decode the +// application payload. It uses some well-known ports such as 53 for +// DNS. +// +// Returns gopacket.LayerTypePayload for unknown/unsupported port numbers. +func (a TCPPort) LayerType() gopacket.LayerType { + lt := tcpPortLayerType[uint16(a)] + if lt != 0 { + return lt + } + return gopacket.LayerTypePayload +} + +var tcpPortLayerType = [65536]gopacket.LayerType{ + 53: LayerTypeDNS, +} + +// RegisterTCPPortLayerType creates a new mapping between a TCPPort +// and an underlaying LayerType. +func RegisterTCPPortLayerType(port TCPPort, layerType gopacket.LayerType) { + tcpPortLayerType[port] = layerType +} + +// String returns the port as "number(name)" if there's a well-known port name, +// or just "number" if there isn't. Well-known names are stored in +// UDPPortNames. +func (a UDPPort) String() string { + if name, ok := UDPPortNames[a]; ok { + return fmt.Sprintf("%d(%s)", a, name) + } + return strconv.Itoa(int(a)) +} + +// LayerType returns a LayerType that would be able to decode the +// application payload. It uses some well-known ports such as 53 for +// DNS. +// +// Returns gopacket.LayerTypePayload for unknown/unsupported port numbers. +func (a UDPPort) LayerType() gopacket.LayerType { + lt := udpPortLayerType[uint16(a)] + if lt != 0 { + return lt + } + return gopacket.LayerTypePayload +} + +var udpPortLayerType = [65536]gopacket.LayerType{ + 53: LayerTypeDNS, + 123: LayerTypeNTP, + 4789: LayerTypeVXLAN, + 67: LayerTypeDHCPv4, + 68: LayerTypeDHCPv4, + 6343: LayerTypeSFlow, + 6081: LayerTypeGeneve, + 3784: LayerTypeBFD, +} + +// RegisterUDPPortLayerType creates a new mapping between a UDPPort +// and an underlaying LayerType. +func RegisterUDPPortLayerType(port UDPPort, layerType gopacket.LayerType) { + udpPortLayerType[port] = layerType +} + +// String returns the port as "number(name)" if there's a well-known port name, +// or just "number" if there isn't. Well-known names are stored in +// RUDPPortNames. +func (a RUDPPort) String() string { + if name, ok := RUDPPortNames[a]; ok { + return fmt.Sprintf("%d(%s)", a, name) + } + return strconv.Itoa(int(a)) +} + +// String returns the port as "number(name)" if there's a well-known port name, +// or just "number" if there isn't. Well-known names are stored in +// SCTPPortNames. +func (a SCTPPort) String() string { + if name, ok := SCTPPortNames[a]; ok { + return fmt.Sprintf("%d(%s)", a, name) + } + return strconv.Itoa(int(a)) +} + +// String returns the port as "number(name)" if there's a well-known port name, +// or just "number" if there isn't. Well-known names are stored in +// UDPLitePortNames. +func (a UDPLitePort) String() string { + if name, ok := UDPLitePortNames[a]; ok { + return fmt.Sprintf("%d(%s)", a, name) + } + return strconv.Itoa(int(a)) +} |