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https://github.com/SagerNet/sing-box.git
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refactor: DNS
This commit is contained in:
世界
parent
572ee775b1
commit
6c9e61a0a0
89 changed files with 4794 additions and 1733 deletions
315
option/dns.go
315
option/dns.go
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@ -1,29 +1,53 @@
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package option
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import (
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"context"
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"net/netip"
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"net/url"
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"os"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/experimental/deprecated"
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"github.com/sagernet/sing/common"
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E "github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/json"
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"github.com/sagernet/sing/common/json/badjson"
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"github.com/sagernet/sing/common/json/badoption"
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M "github.com/sagernet/sing/common/metadata"
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"github.com/sagernet/sing/service"
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"github.com/miekg/dns"
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)
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type DNSOptions struct {
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Servers []DNSServerOptions `json:"servers,omitempty"`
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Rules []DNSRule `json:"rules,omitempty"`
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Final string `json:"final,omitempty"`
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ReverseMapping bool `json:"reverse_mapping,omitempty"`
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FakeIP *DNSFakeIPOptions `json:"fakeip,omitempty"`
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type RawDNSOptions struct {
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Servers []NewDNSServerOptions `json:"servers,omitempty"`
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Rules []DNSRule `json:"rules,omitempty"`
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Final string `json:"final,omitempty"`
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ReverseMapping bool `json:"reverse_mapping,omitempty"`
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DNSClientOptions
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}
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type DNSServerOptions struct {
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Tag string `json:"tag,omitempty"`
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Address string `json:"address"`
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AddressResolver string `json:"address_resolver,omitempty"`
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AddressStrategy DomainStrategy `json:"address_strategy,omitempty"`
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AddressFallbackDelay badoption.Duration `json:"address_fallback_delay,omitempty"`
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Strategy DomainStrategy `json:"strategy,omitempty"`
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Detour string `json:"detour,omitempty"`
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ClientSubnet *badoption.Prefixable `json:"client_subnet,omitempty"`
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type LegacyDNSOptions struct {
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FakeIP *LegacyDNSFakeIPOptions `json:"fakeip,omitempty"`
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}
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type DNSOptions struct {
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RawDNSOptions
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LegacyDNSOptions
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}
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func (o *DNSOptions) UnmarshalJSONContext(ctx context.Context, content []byte) error {
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err := json.UnmarshalContext(ctx, content, &o.LegacyDNSOptions)
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if err != nil {
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return err
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}
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if o.FakeIP != nil && o.FakeIP.Enabled {
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deprecated.Report(ctx, deprecated.OptionLegacyDNSFakeIPOptions)
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ctx = context.WithValue(ctx, (*LegacyDNSFakeIPOptions)(nil), o.FakeIP)
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}
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legacyOptions := o.LegacyDNSOptions
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o.LegacyDNSOptions = LegacyDNSOptions{}
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return badjson.UnmarshallExcludedContext(ctx, content, legacyOptions, &o.RawDNSOptions)
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}
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type DNSClientOptions struct {
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@ -35,8 +59,261 @@ type DNSClientOptions struct {
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ClientSubnet *badoption.Prefixable `json:"client_subnet,omitempty"`
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}
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type DNSFakeIPOptions struct {
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Enabled bool `json:"enabled,omitempty"`
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Inet4Range *netip.Prefix `json:"inet4_range,omitempty"`
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Inet6Range *netip.Prefix `json:"inet6_range,omitempty"`
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type LegacyDNSFakeIPOptions struct {
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Enabled bool `json:"enabled,omitempty"`
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Inet4Range *badoption.Prefix `json:"inet4_range,omitempty"`
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Inet6Range *badoption.Prefix `json:"inet6_range,omitempty"`
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}
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type DNSTransportOptionsRegistry interface {
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CreateOptions(transportType string) (any, bool)
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}
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type _NewDNSServerOptions struct {
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Type string `json:"type,omitempty"`
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Tag string `json:"tag,omitempty"`
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Options any `json:"-"`
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}
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type NewDNSServerOptions _NewDNSServerOptions
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func (o *NewDNSServerOptions) MarshalJSONContext(ctx context.Context) ([]byte, error) {
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return badjson.MarshallObjectsContext(ctx, (*_NewDNSServerOptions)(o), o.Options)
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}
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func (o *NewDNSServerOptions) UnmarshalJSONContext(ctx context.Context, content []byte) error {
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err := json.UnmarshalContext(ctx, content, (*_NewDNSServerOptions)(o))
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if err != nil {
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return err
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}
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registry := service.FromContext[DNSTransportOptionsRegistry](ctx)
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if registry == nil {
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return E.New("missing outbound options registry in context")
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}
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var options any
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switch o.Type {
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case "", C.DNSTypeLegacy:
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o.Type = C.DNSTypeLegacy
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options = new(LegacyDNSServerOptions)
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deprecated.Report(ctx, deprecated.OptionLegacyDNSTransport)
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default:
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var loaded bool
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options, loaded = registry.CreateOptions(o.Type)
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if !loaded {
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return E.New("unknown transport type: ", o.Type)
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}
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}
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err = badjson.UnmarshallExcludedContext(ctx, content, (*_Outbound)(o), options)
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if err != nil {
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return err
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}
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o.Options = options
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if o.Type == C.DNSTypeLegacy {
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err = o.Upgrade(ctx)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (o *NewDNSServerOptions) Upgrade(ctx context.Context) error {
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if o.Type != C.DNSTypeLegacy {
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return nil
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}
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defer func() {
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encoder := json.NewEncoder(os.Stderr)
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encoder.SetIndent("", " ")
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encoder.Encode(o)
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}()
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options := o.Options.(*LegacyDNSServerOptions)
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serverURL, _ := url.Parse(options.Address)
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var serverType string
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if serverURL.Scheme != "" {
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serverType = serverURL.Scheme
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} else {
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switch options.Address {
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case "local", "fakeip":
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serverType = options.Address
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default:
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serverType = C.DNSTypeUDP
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}
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}
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remoteOptions := RemoteDNSServerOptions{
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LocalDNSServerOptions: LocalDNSServerOptions{
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DialerOptions: DialerOptions{
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Detour: options.Detour,
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},
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LegacyStrategy: options.Strategy,
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LegacyDefaultDialer: options.Detour == "",
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LegacyClientSubnet: options.ClientSubnet.Build(netip.Prefix{}),
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},
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AddressResolver: options.AddressResolver,
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AddressStrategy: options.AddressStrategy,
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AddressFallbackDelay: options.AddressFallbackDelay,
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}
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switch serverType {
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case C.DNSTypeLocal:
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o.Type = C.DNSTypeLocal
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o.Options = &remoteOptions.LocalDNSServerOptions
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case C.DNSTypeUDP:
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o.Type = C.DNSTypeUDP
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o.Options = &remoteOptions
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var serverAddr M.Socksaddr
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if serverURL.Scheme == "" {
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serverAddr = M.ParseSocksaddr(options.Address)
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} else {
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serverAddr = M.ParseSocksaddr(serverURL.Host)
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}
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if !serverAddr.IsValid() {
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return E.New("invalid server address")
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}
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remoteOptions.Server = serverAddr.Addr.String()
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if serverAddr.Port != 0 && serverAddr.Port != 53 {
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remoteOptions.ServerPort = serverAddr.Port
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}
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remoteOptions.Server = serverAddr.AddrString()
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remoteOptions.ServerPort = serverAddr.Port
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case C.DNSTypeTCP:
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o.Type = C.DNSTypeTCP
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o.Options = &remoteOptions
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serverAddr := M.ParseSocksaddr(serverURL.Host)
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if !serverAddr.IsValid() {
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return E.New("invalid server address")
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}
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remoteOptions.Server = serverAddr.Addr.String()
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if serverAddr.Port != 0 && serverAddr.Port != 53 {
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remoteOptions.ServerPort = serverAddr.Port
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}
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remoteOptions.Server = serverAddr.AddrString()
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remoteOptions.ServerPort = serverAddr.Port
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case C.DNSTypeTLS, C.DNSTypeQUIC:
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o.Type = serverType
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serverAddr := M.ParseSocksaddr(serverURL.Host)
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if !serverAddr.IsValid() {
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return E.New("invalid server address")
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}
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remoteOptions.Server = serverAddr.Addr.String()
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if serverAddr.Port != 0 && serverAddr.Port != 853 {
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remoteOptions.ServerPort = serverAddr.Port
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}
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o.Options = &RemoteTLSDNSServerOptions{
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RemoteDNSServerOptions: remoteOptions,
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}
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case C.DNSTypeHTTPS, C.DNSTypeHTTP3:
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o.Type = serverType
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httpsOptions := RemoteHTTPSDNSServerOptions{
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RemoteTLSDNSServerOptions: RemoteTLSDNSServerOptions{
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RemoteDNSServerOptions: remoteOptions,
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},
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}
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o.Options = &httpsOptions
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serverAddr := M.ParseSocksaddr(serverURL.Host)
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if !serverAddr.IsValid() {
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return E.New("invalid server address")
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}
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httpsOptions.Server = serverAddr.Addr.String()
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if serverAddr.Port != 0 && serverAddr.Port != 443 {
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httpsOptions.ServerPort = serverAddr.Port
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}
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if serverURL.Path != "/dns-query" {
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httpsOptions.Path = serverURL.Path
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}
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case "rcode":
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var rcode int
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switch serverURL.Host {
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case "success":
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rcode = dns.RcodeSuccess
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case "format_error":
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rcode = dns.RcodeFormatError
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case "server_failure":
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rcode = dns.RcodeServerFailure
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case "name_error":
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rcode = dns.RcodeNameError
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case "not_implemented":
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rcode = dns.RcodeNotImplemented
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case "refused":
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rcode = dns.RcodeRefused
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default:
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return E.New("unknown rcode: ", serverURL.Host)
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}
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o.Type = C.DNSTypePreDefined
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o.Options = &PredefinedDNSServerOptions{
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Responses: []DNSResponseOptions{
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{
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RCode: common.Ptr(DNSRCode(rcode)),
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},
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},
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}
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case C.DNSTypeDHCP:
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o.Type = C.DNSTypeDHCP
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dhcpOptions := DHCPDNSServerOptions{}
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if serverURL.Host != "" && serverURL.Host != "auto" {
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dhcpOptions.Interface = serverURL.Host
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}
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o.Options = &dhcpOptions
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case C.DNSTypeFakeIP:
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o.Type = C.DNSTypeFakeIP
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fakeipOptions := FakeIPDNSServerOptions{}
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if legacyOptions, loaded := ctx.Value((*LegacyDNSFakeIPOptions)(nil)).(*LegacyDNSFakeIPOptions); loaded {
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fakeipOptions.Inet4Range = legacyOptions.Inet4Range
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fakeipOptions.Inet6Range = legacyOptions.Inet6Range
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}
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o.Options = &fakeipOptions
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default:
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return E.New("unsupported DNS server scheme: ", serverType)
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}
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return nil
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}
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type LegacyDNSServerOptions struct {
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Address string `json:"address"`
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AddressResolver string `json:"address_resolver,omitempty"`
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AddressStrategy DomainStrategy `json:"address_strategy,omitempty"`
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AddressFallbackDelay badoption.Duration `json:"address_fallback_delay,omitempty"`
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Strategy DomainStrategy `json:"strategy,omitempty"`
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Detour string `json:"detour,omitempty"`
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ClientSubnet *badoption.Prefixable `json:"client_subnet,omitempty"`
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}
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type HostsDNSServerOptions struct {
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Path badoption.Listable[string] `json:"path,omitempty"`
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Predefined badjson.TypedMap[string, badoption.Listable[netip.Addr]] `json:"predefined,omitempty"`
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}
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type LocalDNSServerOptions struct {
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DialerOptions
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LegacyStrategy DomainStrategy `json:"-"`
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LegacyDefaultDialer bool `json:"-"`
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LegacyClientSubnet netip.Prefix `json:"-"`
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}
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type RemoteDNSServerOptions struct {
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LocalDNSServerOptions
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ServerOptions
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AddressResolver string `json:"address_resolver,omitempty"`
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AddressStrategy DomainStrategy `json:"address_strategy,omitempty"`
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AddressFallbackDelay badoption.Duration `json:"address_fallback_delay,omitempty"`
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}
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type RemoteTLSDNSServerOptions struct {
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RemoteDNSServerOptions
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OutboundTLSOptionsContainer
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}
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type RemoteHTTPSDNSServerOptions struct {
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RemoteTLSDNSServerOptions
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Path string `json:"path,omitempty"`
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Method string `json:"method,omitempty"`
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Headers badoption.HTTPHeader `json:"headers,omitempty"`
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}
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type FakeIPDNSServerOptions struct {
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Inet4Range *badoption.Prefix `json:"inet4_range,omitempty"`
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Inet6Range *badoption.Prefix `json:"inet6_range,omitempty"`
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}
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type DHCPDNSServerOptions struct {
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LocalDNSServerOptions
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Interface string `json:"interface,omitempty"`
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}
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