dns

package
v0.0.0-...-3ea0f55 Latest Latest
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 Go to latest Published: Feb 17, 2014 License: MIT Imports: 5 Imported by: 0

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Constants

View Source 
const (
	PACKET_TYPE_REQUEST  = 0
	PACKET_TYPE_RESPONSE = 1
)
View Source 
const (
	RESPONSE_CODE_NO_ERROR        = 0
	RESPONSE_CODE_FORMAT_ERROR    = 1
	RESPONSE_CODE_SERVER_ERROR    = 2
	RESPONSE_CODE_NAME_ERROR      = 3
	RESPONSE_CODE_NOT_IMPLEMENTED = 4
	RESPONSE_CODE_REFUSED         = 5
)
View Source 
const (
	HEADER_LEN = 12
)

Variables

View Source 
var Classes = map[uint16]string{
	1:   "IN",
	2:   "CS",
	3:   "CH",
	4:   "HS",
	255: "*",
}
View Source 
var Types = map[uint16]string{
	1:   "A",
	2:   "NS",
	3:   "MD",
	4:   "MF",
	5:   "CNAME",
	6:   "SOA",
	7:   "MB",
	8:   "MG",
	9:   "MR",
	10:  "NULL",
	11:  "WKS",
	12:  "PTR",
	13:  "HINFO",
	14:  "MINFO",
	15:  "MX",
	16:  "TXT",
	252: "AXFR",
	253: "MAILB",
	254: "MAILA",
	255: "*",
}

Functions

This section is empty.

Types

type CName 

type CName Domain

type Domain 

type Domain struct {
	Labels []Label
}

func NewDomain 

func NewDomain(packet []byte, offset int) (Domain, int, error)

func (Domain) String 

func (domain Domain) String() string
type Header struct {
	ID uint16

	QDCount uint16
	ANCount uint16
	NSCount uint16
	ARCount uint16
	// contains filtered or unexported fields
}

func NewHeader 

func NewHeader(data []byte) Header

func (Header) IsAuthoritativeAnswer 

func (header Header) IsAuthoritativeAnswer() bool

func (Header) IsRecursionAvailable 

func (header Header) IsRecursionAvailable() bool

func (Header) IsRecursionDesired 

func (header Header) IsRecursionDesired() bool

func (Header) IsTruncated 

func (header Header) IsTruncated() bool

func (Header) OpCode 

func (header Header) OpCode() uint8

func (Header) PacketType 

func (header Header) PacketType() uint8

func (Header) PacketTypeString 

func (header Header) PacketTypeString() string

func (Header) ResponseCode 

func (header Header) ResponseCode() uint8

func (Header) String 

func (header Header) String() string

type Label 

type Label struct {
	Length byte
	Data   string
}

func ReadLabels 

func ReadLabels(packet []byte, offset int) ([]Label, int, error)

func (Label) DataLength 

func (label Label) DataLength() byte

func (Label) String 

func (label Label) String() string

type Packet 

type Packet struct {
	Header
	Questions         []Question
	Answers           []ResourceRecord
	NameServers       []ResourceRecord
	AdditionalRecords []ResourceRecord
}

func NewPacket 

func NewPacket(packetData []byte) (*Packet, error)

func (*Packet) IsValid 

func (packet *Packet) IsValid() bool

func (*Packet) String 

func (packet *Packet) String() string

type Question 

type Question struct {
	Domain
	Type  uint16
	Class uint16
}

func NewQuestion 

func NewQuestion(packet []byte, offset int) (Question, int)

func (Question) ClassName 

func (question Question) ClassName() string

func (Question) String 

func (question Question) String() string

func (Question) TypeName 

func (question Question) TypeName() string

type ResourceRecord 

type ResourceRecord struct {
	Domain
	Type     uint16
	Class    uint16
	TTL      uint32
	RDLength uint16
	RData    interface{}
}

func NewResourceRecord 

func NewResourceRecord(packet []byte, offset int) (ResourceRecord, int)

func (ResourceRecord) ClassName 

func (record ResourceRecord) ClassName() string

func (ResourceRecord) String 

func (record ResourceRecord) String() string

func (ResourceRecord) TypeName 

func (record ResourceRecord) TypeName() string

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