dns

Documentation

Index

• Constants
• Variables
• func NewDomainFilter(domains []string) *domainFilter
• func ReCreateServer(addr string, resolver *Resolver, mapper *ResolverEnhancer) error
• type Config
• type EnhancedMode
  • func (e EnhancedMode) MarshalJSON() ([]byte, error)
  • func (e EnhancedMode) MarshalYAML() (interface{}, error)
  • func (e EnhancedMode) String() string
  • func (e *EnhancedMode) UnmarshalJSON(data []byte) error
  • func (e *EnhancedMode) UnmarshalYAML(unmarshal func(interface{}) error) error
• type FallbackFilter
• type NameServer
• type Resolver
  • func NewResolver(config Config) *Resolver
  • func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error)
  • func (r *Resolver) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error)
  • func (r *Resolver) ResolveIP(host string) (ip net.IP, err error)
  • func (r *Resolver) ResolveIPv4(host string) (ip net.IP, err error)
  • func (r *Resolver) ResolveIPv6(host string) (ip net.IP, err error)
• type ResolverEnhancer
  • func NewEnhancer(cfg Config) *ResolverEnhancer
  • func (h *ResolverEnhancer) FakeIPEnabled() bool
  • func (h *ResolverEnhancer) FindHostByIP(ip net.IP) (string, bool)
  • func (h *ResolverEnhancer) IsExistFakeIP(ip net.IP) bool
  • func (h *ResolverEnhancer) IsFakeIP(ip net.IP) bool
  • func (h *ResolverEnhancer) MappingEnabled() bool
  • func (h *ResolverEnhancer) PatchFrom(o *ResolverEnhancer)
• type Server
  • func (s *Server) ServeDNS(w D.ResponseWriter, r *D.Msg)

Constants

const (
	IfaceTTL    = time.Second * 20
	DHCPTTL     = time.Hour
	DHCPTimeout = time.Minute
)

Variables

var (
	// EnhancedModeMapping is a mapping for EnhancedMode enum
	EnhancedModeMapping = map[string]EnhancedMode{
		NORMAL.String():  NORMAL,
		FAKEIP.String():  FAKEIP,
		MAPPING.String(): MAPPING,
	}
)

Functions

func NewDomainFilter

func NewDomainFilter(domains []string) *domainFilter

func ReCreateServer

func ReCreateServer(addr string, resolver *Resolver, mapper *ResolverEnhancer) error

Types

type Config

type Config struct {
	Main, Fallback []NameServer
	Default        []NameServer
	IPv6           bool
	EnhancedMode   EnhancedMode
	FallbackFilter FallbackFilter
	Pool           *fakeip.Pool
	Hosts          *trie.DomainTrie
	Policy         map[string]NameServer
}

type EnhancedMode

type EnhancedMode int

const (
	NORMAL EnhancedMode = iota
	FAKEIP
	MAPPING
)

func (EnhancedMode) MarshalJSON

func (e EnhancedMode) MarshalJSON() ([]byte, error)

MarshalJSON serialize EnhancedMode with json

func (EnhancedMode) MarshalYAML

func (e EnhancedMode) MarshalYAML() (interface{}, error)

MarshalYAML serialize EnhancedMode with yaml

func (EnhancedMode) String

func (e EnhancedMode) String() string

func (*EnhancedMode) UnmarshalJSON

func (e *EnhancedMode) UnmarshalJSON(data []byte) error

UnmarshalJSON unserialize EnhancedMode with json

func (*EnhancedMode) UnmarshalYAML

func (e *EnhancedMode) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML unserialize EnhancedMode with yaml

type FallbackFilter

type FallbackFilter struct {
	GeoIP     bool
	GeoIPCode string
	IPCIDR    []*net.IPNet
	Domain    []string
}

type NameServer

type NameServer struct {
	Net  string
	Addr string
}

type Resolver

type Resolver struct {
	// contains filtered or unexported fields
}

func NewResolver

func NewResolver(config Config) *Resolver

func (*Resolver) Exchange

func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error)

Exchange a batch of dns request, and it use cache

func (*Resolver) ExchangeContext

func (r *Resolver) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, err error)

ExchangeContext a batch of dns request with context.Context, and it use cache

func (*Resolver) ResolveIP

func (r *Resolver) ResolveIP(host string) (ip net.IP, err error)

ResolveIP request with TypeA and TypeAAAA, priority return TypeA

func (*Resolver) ResolveIPv4

func (r *Resolver) ResolveIPv4(host string) (ip net.IP, err error)

ResolveIPv4 request with TypeA

func (*Resolver) ResolveIPv6

func (r *Resolver) ResolveIPv6(host string) (ip net.IP, err error)

ResolveIPv6 request with TypeAAAA

type ResolverEnhancer

type ResolverEnhancer struct {
	// contains filtered or unexported fields
}

func NewEnhancer

func NewEnhancer(cfg Config) *ResolverEnhancer

func (*ResolverEnhancer) FakeIPEnabled

func (h *ResolverEnhancer) FakeIPEnabled() bool

func (*ResolverEnhancer) FindHostByIP

func (h *ResolverEnhancer) FindHostByIP(ip net.IP) (string, bool)

func (*ResolverEnhancer) IsExistFakeIP

func (h *ResolverEnhancer) IsExistFakeIP(ip net.IP) bool

func (*ResolverEnhancer) IsFakeIP

func (h *ResolverEnhancer) IsFakeIP(ip net.IP) bool

func (*ResolverEnhancer) MappingEnabled

func (h *ResolverEnhancer) MappingEnabled() bool

func (*ResolverEnhancer) PatchFrom

func (h *ResolverEnhancer) PatchFrom(o *ResolverEnhancer)

type Server

type Server struct {
	*D.Server
	// contains filtered or unexported fields
}

func (*Server) ServeDNS

func (s *Server) ServeDNS(w D.ResponseWriter, r *D.Msg)

ServeDNS implement D.Handler ServeDNS